"Authors","Author full names","Author(s) ID","Title","Year","Source title","Volume","Issue","Art. No.","Page start","Page end","Page count","Cited by","DOI","Link","Affiliations","Authors with affiliations","Abstract","Author Keywords","Index Keywords","References","Correspondence Address","Editors","Publisher","ISSN","ISBN","CODEN","PubMed ID","Language of Original Document","Abbreviated Source Title","Document Type","Publication Stage","Open Access","Source","EID" "Pollard C.D.; Sigward S.M.; Powers C.M.","Pollard, Christine D. (7006671942); Sigward, Susan M. (9735729200); Powers, Christopher M. (7103284208)","7006671942; 9735729200; 7103284208","Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments","2010","Clinical Biomechanics","25","2","","142","146","4","231","10.1016/j.clinbiomech.2009.10.005","https://www.scopus.com/inward/record.uri?eid=2-s2.0-73749086043&doi=10.1016%2fj.clinbiomech.2009.10.005&partnerID=40&md5=60377b14bd8cf5625d98a1acf42f8175","Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, University of Southern California, Los Angeles, CA, United States","Pollard C.D., Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, University of Southern California, Los Angeles, CA, United States; Sigward S.M., Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, University of Southern California, Los Angeles, CA, United States; Powers C.M., Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, University of Southern California, Los Angeles, CA, United States","Background: It has been proposed that female athletes who limit knee and hip flexion during athletic tasks rely more on the passive restraints in the frontal plane to deceleration their body center of mass. This biomechanical pattern is thought to increase the risk for anterior cruciate ligament injury. To date, the relationship between sagittal plane kinematics and frontal plane knee motion and moments has not been explored. Methods: Subjects consisted of 58 female club soccer players (age range: 11-20 years) with no history of knee injury. Kinematics, ground reaction forces, and surface electromyography were collected while each subject performed a drop landing task. Subjects were divided into two groups based on combined sagittal plane knee and hip flexion angles during the deceleration phase of landing (high flexion and low flexion). Findings: Subjects in the low flexion group demonstrated increased knee valgus angles (P = 0.02, effect size 0.27), increased knee adductor moments (P = 0.03, effect size 0.24), decreased energy absorption at the knee and hip (P = 0.02, effect size 0.25; and P < 0.001, effect size 0.59), and increased vastus lateralis EMG when compared to subjects in the high flexion group (P = 0.005, effect size 0.35). Interpretation: Female athletes with limited sagittal plane motion during landing exhibit a biomechanical profile that may put these individuals at greater risk for anterior cruciate ligament injury. © 2009 Elsevier Ltd. All rights reserved.","ACL; Injury prevention; Joint moments; Stiff landing","Adolescent; Child; Computer Simulation; Female; Hip Joint; Humans; Knee Joint; Models, Biological; Muscle Contraction; Muscle, Skeletal; Range of Motion, Articular; Soccer; Task Performance and Analysis; Young Adult; Aerospace vehicles; Bending strength; Biomechanics; Gait analysis; Kinematics; Landing; Ligaments; Surface reactions; Anterior cruciate ligament injury; Deceleration phase; Effect size; Frontal planes; Ground reaction forces; Hip flexion; Injury prevention; Joint moment; Knee flexions; Knee injury; Knee motion; Knee valgus; Sagittal plane; Soccer player; Surface electromyography; adolescent; adult; article; body movement; child; electromyography; energy absorption; female; hip; human; human experiment; joint function; knee function; landing; muscle force; normal human; priority journal; school child; vastus lateralis muscle; Joints (anatomy)","Arendt E.A., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. NCAA data and review of literature, Am. J. Sports Med., 23, pp. 694-701, (1995); Basmajian J.V., Deluca C.J., Muscles Alive: Their Functions Revealed by Electromyography. fifth ed., (1985); Boden B., Dean G., Feagin J., Garrett W., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Bresler B., Frankel J.P., The forces and moments in the leg during level walking, Trans. Am. Soc. Mech. Eng., 72, pp. 27-36, (1950); Devita P., Skelly W.A., Effect of landing stiffness on joint kinetics and energetics in the lower extremity, Med. Sci. Sports Exerc., 24, pp. 108-115, (1992); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med. Sci. Sports Exerc., 35, pp. 1745-1750, (2003); Ford K.R., Myer G.D., Hewett T.E., Reliability of landing 3D motion analysis: implications for longitudinal analyses, Med. Sci. Sports Exerc., 39, pp. 2021-2028, (2007); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: application to the knee, J. Biomech. Eng., 105, pp. 136-144, (1983); Hewett T.E., Riccobene J.V., Lindenfeld T.N., The effect of neuromuscular training on the incidence of knee injury in female athletes: a prospective study, Am. J. Sports Med., 24, pp. 699-706, (1999); Hewett T.E., Paterno M.V., Myer G.D., Strategies for enhancing proprioception and neuromuscular control of the knee, Clin. Orthop. Relat. Res., 402, pp. 76-94, (2002); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S.J., Colosimo A.J., McLean S.G., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes, Am. J. Sports Med., 33, pp. 492-501, (2005); Kernozek T.W., Torry M.R., Iwasaki M., Gender differences in lower extremity landing mechanics caused by neuromuscular fatigue, Am. J. Sports Med., 36, pp. 554-565, (2008); Lephart S.M., Ferris C.M., Riemann B.L., Myers J.B., Fu F.H., Gender differences in strength and lower extremity kinematics during landing, Clin. Orthop. Relat. Res., 401, pp. 162-169, (2002); Malinzak R.A., Colby S.M., Kirkendal D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin. Biomech., 16, pp. 438-445, (2001); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Knarr J.F., Thomas S.D., Griffin L.Y., Et al., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes, Am. J. Sports Med., 33, pp. 1003-1010, (2005); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J. Orthop. Res., 13, pp. 930-935, (1995); McLean S.G., Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: potential for injury in women, Med. Sci. Sports Exerc., 31, pp. 959-968, (1999); McLean S.G., Huang X., van den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: implications for ACL injury, Clin. Biomech., 20, pp. 863-870, (2005); Pappas E., Hagins M., Sheikhzadeh A., Nordin M., Rose D., Biomechanical differences between unilateral and bilateral landings from a jump: gender differences, Clin. J. Sport Med., 17, pp. 263-268, (2007); Pollard C.D., Sigward S.M., Powers C.M., Gender differences in hip joint kinematics and kinetics during side-step cutting maneuver, Clin. J. Sport Med., 17, pp. 38-42, (2007); Renstrom P., Arms S.W., Stanwyck T.S., Johnson R.J., Pope M.H., Strain within the anterior cruciate ligament during hamstring and quadriceps activity, Am. J. Sports Med., 14, pp. 83-87, (1986); Salci Y., Kentel B.B., Heycan C., Akin S., Korkusuz F., Comparison of landing maneuvers between male and female college volleyball players, Clin. Biomech., 19, pp. 622-628, (2004); Schmitz R.J., Kulas A.S., Perrin D.H., Riemann B.L., Shultz S.J., Sex differences in lower extremity biomechanics during single leg landings, Clin. Biomech., 22, pp. 681-688, (2007); Sigward S.M., Powers C.M., The Influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clin. Biomech., 21, pp. 41-48, (2006)","C.D. Pollard; Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, University of Southern California, Los Angeles, CA, United States; email: cpollard@usc.edu","","","02680033","","CLBIE","19913961","English","Clin. Biomech.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-73749086043" "Menzel H.-J.; Chagas M.H.; Szmuchrowski L.A.; Araujo S.R.S.; De Andrade A.G.P.; De Jesus-Moraleida F.R.","Menzel, Hans-Joachim (16307245800); Chagas, Mauro H. (22957345200); Szmuchrowski, Leszek A. (24774059700); Araujo, Silvia R.S. (36105748400); De Andrade, Andre G.P. (55776857900); De Jesus-Moraleida, Fabianna Resende (52563659300)","16307245800; 22957345200; 24774059700; 36105748400; 55776857900; 52563659300","Analysis of lower limb asymmetries by isokinetic and vertical jump tests in soccer players","2013","Journal of Strength and Conditioning Research","27","5","","1370","1377","7","106","10.1519/JSC.0b013e318265a3c8","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878032416&doi=10.1519%2fJSC.0b013e318265a3c8&partnerID=40&md5=ce8b9fb12693975c7d8384db51c1822d","Laboratory of Sport Biomechanics, Federal University of Minas Gerais, Belo Horizonte, Brazil","Menzel H.-J., Laboratory of Sport Biomechanics, Federal University of Minas Gerais, Belo Horizonte, Brazil; Chagas M.H., Laboratory of Sport Biomechanics, Federal University of Minas Gerais, Belo Horizonte, Brazil; Szmuchrowski L.A., Laboratory of Sport Biomechanics, Federal University of Minas Gerais, Belo Horizonte, Brazil; Araujo S.R.S., Laboratory of Sport Biomechanics, Federal University of Minas Gerais, Belo Horizonte, Brazil; De Andrade A.G.P., Laboratory of Sport Biomechanics, Federal University of Minas Gerais, Belo Horizonte, Brazil; De Jesus-Moraleida F.R., Laboratory of Sport Biomechanics, Federal University of Minas Gerais, Belo Horizonte, Brazil","Assessment of lower extremity bilateral asymmetries in soccer players is important for both injury prevention and performance. The purpose of this investigation was to compare isokinetic knee extensor assessment of asymmetry with a more specific countermovement jump (CMJ). Forty-six Brazilian male professional soccer players participated in this study. The maximal power, maximal force and impulse were determined during CMJ and the total work and peak torque at 60, 180, and 300°·s-1 during isokinetic leg extension, separately for each leg. Factor analysis was performed for all investigated variables, and the diagnostic concordance between different criteria was analyzed by McNemar's χ2 test. The factor analysis showed that the isokinetic and CMJ tests were widely independent methods for the assessment of bilateral differences. Concordance of the diagnostic information could only be found between the maximal force during CMJ and the total work and peak torque at 180 and 300°·s-1 during isokinetic leg extension. Impulse and maximal power during CMJ on a double force platform appear to be appropriate additional variables for the identification of bilateral differences. Therefore, it might be pertinent to perform, in addition to isokinetic assessment, a vertical jump test on a force platform to assure widespread and reliable diagnostic information. © 2013 National Strength and Conditioning Association.","Bilateral differences; Force platform; Impulse; Isokinetic; Power; Strength","Athletic Injuries; Biomechanics; Brazil; Cross-Sectional Studies; Exercise Test; Factor Analysis, Statistical; Humans; Lower Extremity; Male; Muscle Strength; Soccer; Young Adult; adult; article; biomechanics; Brazil; cross-sectional study; exercise test; factorial analysis; human; leg; male; methodology; muscle strength; soccer; sport injury","Augustsson J., Thomee R., Ability of closed and open kinetic chain tests of muscular strength to assess functional performance, Scan J Med Sci Sports, 10, pp. 164-168, (2000); Behm D.G., Kibele A., Effects of differing intensities of static stretching on jump performance, European Journal of Applied Physiology, 101, 5, pp. 587-594, (2007); Brown L.E., Whitehurst M., Load range, Isokinetics in Human Performance, (2000); Clark N.C., Functional performance testing following knee ligament injury, Physical Therapy in Sport, 2, 2, pp. 91-105, (2001); Croisier J.-L., Ganteaume S., Binet J., Genty M., Ferret J.-M., Strength imbalances and prevention of hamstring injury in professional soccer players: A prospective study, American Journal of Sports Medicine, 36, 8, pp. 1469-1475, (2008); Croisier J.L., Reveillon R., Ferret J.M., Cotte T., Genty M., Popovich N., Filho M., Faryniuk J.E., Ganteaume S., Crielaard J.N., Isokinetic assessment of knee flexors and extensors in professional soccer players, Isokinet Exerc Sci, 11, pp. 61-62, (2003); Dvir Z., Isokinetics. Muscle testing, Interpretation, and Clinical Applications, (2004); Hatze H., Motion variability: Its definition, quantification, and origin, J Motor Behav, 18, pp. 5-16, (1986); Hodges S.J., Patrick R.J., Reiser R.F.I.I., Effects of fatigue on bilateral ground reaction force asymmetries during the squat exercise, J Strength Cond Res, 25, pp. 3107-3117, (2011); Impellizzeri F.M., Bizzini M., Rampinini E., Cereda F., Maffiuletti N.A., Reliability of isokinetic strength imbalance ratios measured using the Cybex NORM dynamometer, Clinical Physiology and Functional Imaging, 28, 2, pp. 113-119, (2008); Impellizzeri F.M., Rampinini E., Maffiuletti N., Marcora S.M., A vertical jump force test for assessing bilateral strength asymmetry in athletes, Medicine and Science in Sports and Exercise, 39, 11, pp. 2044-2050, (2007); Knapik J.J., Bauman C.L., Jones B.H., Harris J.M., Vaughan L., Preseason strength and flexibility imbalances associated with athletic injuries in female collegiate athletes, Am J Sports Med, 19, pp. 76-81, (1991); Little T., Williams A.G., Specificity of acceleration, maximum speed, and agility in professional soccer players, Journal of Strength and Conditioning Research, 19, 1, pp. 76-78, (2005); Maupas E., Paysant J., Datie A.M., Martinet N., Andre J.M., Functional asymmetries of the lower limbs. A comparison between clinical assessment of laterality, isokinetic evaluation and electrogoniometric monitoring of knees during walking, Gait and Posture, 16, 3, pp. 304-312, (2002); Mayer F., Schlumberger A., Van Cingel R., Henrotin Y., Laube W., Schmidtbleicher D., Training and testing in open versus closed kinetic chain, Isokinetics and Exercise Science, 11, 4, pp. 181-187, (2003); Mognoni P., Narici M.V., Sirtori M.D., Lorenzelli F., Isokinetic torques and kicking maximal ball velocity in young soccer players, J Sports Med Phys Fitness, 34, pp. 357-361, (1994); Murphy A.J., Poor correlations between isometric tests and dynamic performance: Relationship to muscle activation, European Journal of Applied Physiology and Occupational Physiology, 73, 3-4, pp. 353-357, (1996); Murphy D.F., Connolly D.A.J., Beynnon B.D., Risk factors for lower extremity injury: A review of the literature, British Journal of Sports Medicine, 37, 1, pp. 13-29, (2003); Newton R.U., Gerber A., Nimphius S., Shin J., Doan B.K., Robertson M., Pearson D.R., Graig B.W., Hakkinen K., Kraemer W.J., Determination of functional strength imbalance of the lower extremities, J Strength Cond Res, 20, pp. 971-977, (2006); Noyes F.R., Barber S.D., Mangine R.E., Abnormal lower limb symmetry determined by function hop tests after anterior cruciate ligament rupture, Am J Sports Med, 19, pp. 513-518, (1991); Ostenberg A., Roos E., Ekdahl C., Roos H., Isokinetic knee extensor strength and functional performance in healthy female soccer players, Scandinavian Journal of Medicine and Science in Sports, 8, 5, pp. 257-264, (1998); Osternig L.R., Isokinetic dynamometry: Implications for muscle testing and rehabilitation, Exerc Sports Sci Rev, 14, pp. 45-80, (1986); Ozcakar L., Kunduracyoolu B., Cetin A., Ulkar B., Guner R., Hascelik Z., Comprehensive isokinetic knee measurements and quadriceps tendon evaluations in footballers for assessing functional performance, British Journal of Sports Medicine, 37, 6, pp. 507-510, (2003); Petschnig R., Baron R., Albrecht M., The relationship between isokinetic quadriceps strength test and hop tests for distance and one-legged vertical jump test following anterior cruciate ligament reconstruction, Journal of Orthopaedic and Sports Physical Therapy, 28, 1, pp. 23-31, (1998); Portney L.G., Watkins M.P., Foundations of Clinical Research: Applications to Practice, (2000); Schmidtbleicher D., Training of power events, Strength and Power in Sport, pp. 381-395, (1992); Schot P.K., Bates B.T., Dufek J.S., Bilateral performance symmetry during drop landing: A kinetic analysis, Medicine and Science in Sports and Exercise, 26, 9, pp. 1153-1159, (1994); Wisloff U., Castagna C., Helgerud J., Jones R., Hoff J., Strong correlation of maximal squat strength with sprint performance and vertical jump height in elite soccer players, British Journal of Sports Medicine, 38, 3, pp. 285-288, (2004); Young W.B., James R., Montgomery I., Is muscle power related to running speed with changes of direction?, J Sports Med Phys Fitness, 42, pp. 282-288, (2002); Zakas A., Bilateral isokinetic peak torque of quadriceps and hamstring muscles in professional soccer players with dominance on one or both two sides, Journal of Sports Medicine and Physical Fitness, 46, 1, pp. 28-35, (2006)","H.-J. Menzel; Laboratory of Sport Biomechanics, Federal University of Minas Gerais, Belo Horizonte, Brazil; email: menzel@ufmg.br","","","15334295","","","22796999","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-84878032416" "Waldén M.; Krosshaug T.; Bjørneboe J.; Andersen T.E.; Faul O.; Hägglund M.","Waldén, Markus (7004987342); Krosshaug, Tron (55888189500); Bjørneboe, John (36472879000); Andersen, Thor Einar (7201524414); Faul, Oliver (55531398100); Hägglund, Martin (6602402288)","7004987342; 55888189500; 36472879000; 7201524414; 55531398100; 6602402288","Three distinct mechanisms predominate in noncontact anterior cruciate ligament injuries in male professional football players: A systematic video analysis of 39 cases","2015","British Journal of Sports Medicine","49","22","","1452","1460","8","295","10.1136/bjsports-2014-094573","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945898023&doi=10.1136%2fbjsports-2014-094573&partnerID=40&md5=7b235ee1057e90cf0edd3cb7d9707778","Division of Community Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, 581 83, Sweden; Football Research Group, Linköping, Sweden; Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Division of Physiotherapy, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden","Waldén M., Division of Community Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, 581 83, Sweden, Football Research Group, Linköping, Sweden; Krosshaug T., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Bjørneboe J., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Andersen T.E., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Faul O., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Hägglund M., Football Research Group, Linköping, Sweden, Division of Physiotherapy, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden","Background Current knowledge on anterior cruciate ligament (ACL) injury mechanisms in male football players is limited. Aim To describe ACL injury mechanisms in male professional football players using systematic video analysis. Methods We assessed videos from 39 complete ACL tears recorded via prospective professional football injury surveillance between 2001 and 2011. Five analysts independently reviewed all videos to estimate the time of initial foot contact with the ground and the time of ACL tear. We then analysed all videos according to a structured format describing the injury circumstances and lower limb joint biomechanics. Results Twenty-five injuries were non-contact, eight indirect contact and six direct contact injuries. We identified three main categories of non-contact and indirect contact injury situations: (1) pressing (n=11), (2) re-gaining balance after kicking (n=5) and (3) landing after heading (n=5). The fourth main injury situation was direct contact with the injured leg or knee (n=6). Knee valgus was frequently seen in the main categories of non-contact and indirect contact playing situations (n=11), but a dynamic valgus collapse was infrequent (n=3). This was in contrast to the tackling-induced direct contact situations where a knee valgus collapse occurred in all cases (n=3). Conclusions Eighty-five per cent of the ACL injuries in male professional football players resulted from noncontact or indirect contact mechanisms. The most common playing situation leading to injury was pressing followed by kicking and heading. Knee valgus was frequently seen regardless of the playing situation, but a dynamic valgus collapse was rare.","","Adult; Anterior Cruciate Ligament Injuries; Athletic Injuries; Biomechanical Phenomena; Humans; Knee Injuries; Male; Rupture; Soccer; Sweden; Video Recording; adult; anterior cruciate ligament injury; Athletic Injuries; biomechanics; human; injuries; Knee Injuries; male; pathophysiology; rupture; soccer; Sweden; videorecording","Busfield B.T., Kharrazi F.D., Starkey C., Et al., Performance outcomes of anterior cruciate ligament reconstruction in the National Basketball Association, Arthroscopy, 25, pp. 825-830, (2009); Shah V.M., Andrews J.R., Fleisig G.S., Et al., Return to play after anterior cruciate ligament reconstruction in National Football League athletes, Am J Sports Med, 38, pp. 2233-2239, (2010); Walden M., Hagglund M., Magnusson H., Et al., Anterior cruciate ligament injury in elite football: A prospective three-cohort study, Knee Surg Sports Traumatol Arthrosc, 19, pp. 11-19, (2011); Erickson B.J., Harris J.D., Cvetanovich G.L., Et al., Performance and return to sport after anterior cruciate ligament reconstruction in male Major League Soccer players, Orthop J Sports Med, 1, (2013); Ekstrand J., Hagglund M., Kristenson K., Et al., Fewer ligament injuries but no preventive effect on muscle injuries and severe injuries: An 11-year follow-up of the UEFA Champions League injury study, Br J Sports Med, 47, pp. 732-737, (2013); Engebretsen L., Bahr R., Cook J.L., Et al., The IOC Centres of Excellence bring prevention to sports medicine, Br J Sports Med, 48, pp. 1270-1275, (2014); Bahr R., Krosshaug T., Understanding injury mechanisms: A key component of preventing injuries in sport, Br J Sports Med, 39, pp. 324-329, (2005); Krosshaug T., Andersen T.E., Olsen O.E., Et al., Research approaches to describe the mechanisms of injuries in sports: Limitations and possibilities, Br J Sports Med, 39, pp. 330-339, (2005); Ebstrup J.F., Bojsen-Moller F., Anterior cruciate ligament injury in indoor ball games, Scand J Med Sci Sports, 10, pp. 114-116, (2000); Krosshaug T., Nakamae A., Boden B.P., Et al., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, Am J Sports Med, 35, pp. 359-367, (2007); Olsen O.E., Myklebust G., Engebretsen L., Et al., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med, 32, pp. 1002-1012, (2004); Cochrane J.L., Lloyd D.G., Buttfield A., Et al., Characteristics of anterior cruciate ligament injuries in Australian football, J Sci Med Sport, 10, pp. 96-104, (2007); Boden B.P., Dean G.S., Feagin J.A., Et al., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-598, (2000); Boden B.P., Torg J.S., Knowles S.B., Et al., Video analysis of anterior cruciate ligament injury: Abnormalities in hip and ankle kinematics, Am J Sports Med, 37, pp. 252-259, (2009); Brophy R.H., Stepan J., Silvers H.J., Et al., Defending puts the anterior cruciate ligament at risk during soccer: A gender-based analysis, Sports Health, (2014); Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: The UEFA Injury Study, Br J Sports Med, 45, pp. 553-558, (2011); Walden M., Hagglund M., Ekstrand J., UEFA Champions League study: A prospective study of injuries in professional football during the 2001-2002 season, Br J Sports Med, 39, pp. 542-546, (2005); Hagglund M., Walden M., Ekstrand J., Injuries among male and female elite football players, Scand J Med Sci Sports, 19, pp. 819-827, (2009); Walden M., Hagglund M., Ekstrand J., Injuries in Swedish elite football-A prospective study on injury definitions, risk for injury and injury pattern during 2001, Scand J Med Sci Sports, 15, pp. 118-125, (2005); Andersen T.E., Engebretsen L., Bahr R., Rule violations as a cause of injuries in male Norwegian professional football. Are the referees doing their job?, Am J Sports Med, 32, pp. S62-S68, (2004); Bjorneboe J., Bahr R., Andersen T.E., Gradual increase in the risk of match injury in Norwegian male professional football: A 6-year prospective study, Scand J Med Sci Sports, 24, pp. 189-196, (2014); Andersen T.E., Larsen O., Tenga A., Et al., Football incident analysis: A new video based method to describe injury mechanisms in professional football, Br J Sports Med, 37, pp. 226-232, (2003); Bere T., Florenes T.W., Krosshaug T., Et al., Mechanisms of anterior cruciate ligament injury in World Cup alpine skiing: A systematic video analysis of 20 cases, Am J Sports Med, 39, pp. 1421-1429, (2011); Quatman C.E., Hewett T.E., The anterior cruciate ligament injury controversy: Is ""valgus collapse"" a sex-specific mechanism?, Br J Sports Med, 43, pp. 328-335, (2009); Fauno P., Wulff Jakobsen B., Mechanism of anterior cruciate ligament injuries in soccer, Int J Sports Med, 27, pp. 75-79, (2006); Rochcongar P., Laboute E., Jan J., Et al., Ruptures of the anterior cruciate ligament in soccer, Int J Sports Med, 30, pp. 372-378, (2009); Soligard T., Myklebust G., Steffen K., Et al., Comprehensive warm-up programme to prevent injuries in young female footballers: Cluster randomised controlled trial, BMJ, 337, (2008); Walden M., Atroshi I., Magnusson H., Et al., Prevention of acute knee injuries in adolescent female football players: Cluster randomised controlled trial, BMJ, 344, (2012); Koga H., Nakamae A., Shima Y., Et al., Mechanisms for noncontact anterior cruciate ligament injuries: Knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, pp. 2218-2225, (2010); Meyer E.G., Haut R.C., Anterior cruciate ligament injury induced by internal tibial torsion or tibiofemoral compression, J Biomech, 41, pp. 3377-3383, (2008); Koga H., Bahr R., Myklebust G., Et al., Estimating anterior tibial translation from model-based image-matching of a noncontact anterior cruciate ligament injury in professional football: A case report, Clin J Sport Med, 21, pp. 271-274, (2011); Krosshaug T., Nakamae A., Boden B., Et al., Estimating 3D joint kinematics from video sequences of running and cutting maneuvers-Assessing the accuracy of simple visual inspection, Gait Posture, 26, pp. 378-385, (2007); Alentorn-Geli E., Myer G.D., Silvers H.J., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: Mechanisms of injury and underlying risk factors, Knee Surg Sports Traumatol Arthrosc, 17, pp. 705-729, (2009); Orchard J., Seward H., McGivern J., Et al., Rainfall, evaporation and the risk of non-contact anterior cruciate ligament injury in the Australian Football League, Med J Aust, 170, pp. 304-306, (1999); Walden M., Hagglund M., Orchard J., Et al., Regional differences in injury incidence in European professional football, Scand J Med Sci Sports, 23, pp. 424-430, (2013)","M. Waldén; Division of Community Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, 581 83, Sweden; email: markus.walden@telia.com","","BMJ Publishing Group","03063674","","BJSMD","25907183","English","Br. J. Sports Med.","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-84945898023" "Silvers-Granelli H.J.; Bizzini M.; Arundale A.; Mandelbaum B.R.; Snyder-Mackler L.","Silvers-Granelli, Holly J. (56940696700); Bizzini, Mario (11141540200); Arundale, Amelia (56529660500); Mandelbaum, Bert R. (7004262150); Snyder-Mackler, Lynn (7006751957)","56940696700; 11141540200; 56529660500; 7004262150; 7006751957","Does the FIFA 11+ Injury Prevention Program Reduce the Incidence of ACL Injury in Male Soccer Players?","2017","Clinical Orthopaedics and Related Research","475","10","","2447","2455","8","117","10.1007/s11999-017-5342-5","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85017162380&doi=10.1007%2fs11999-017-5342-5&partnerID=40&md5=2880f68c64c52c7a7058f0b4c6a76b09","Biomechanics and Movement Science Program, University of Delaware, Newark, DE, United States; Fédération Internationale de Football Association (FIFA), Medical Assessment and Research Centre (F-MARC), Schulthess Clinic, Zurich, Switzerland; Santa Monica Orthopaedic Group, Santa Monica, CA, United States; Department of Physical Therapy and Biomechanics and Movement Science Program, University of Delaware, Newark, DE, United States; Velocity Physical Therapy, 11611 San Vicente Boulevard, GF-1, Los Angeles, 90049, CA, United States","Silvers-Granelli H.J., Biomechanics and Movement Science Program, University of Delaware, Newark, DE, United States, Velocity Physical Therapy, 11611 San Vicente Boulevard, GF-1, Los Angeles, 90049, CA, United States; Bizzini M., Fédération Internationale de Football Association (FIFA), Medical Assessment and Research Centre (F-MARC), Schulthess Clinic, Zurich, Switzerland; Arundale A., Biomechanics and Movement Science Program, University of Delaware, Newark, DE, United States; Mandelbaum B.R., Santa Monica Orthopaedic Group, Santa Monica, CA, United States; Snyder-Mackler L., Department of Physical Therapy and Biomechanics and Movement Science Program, University of Delaware, Newark, DE, United States","Background: The FIFA 11+ injury prevention program has been shown to decrease the risk of soccer injuries in men and women. The program has also been shown to decrease time loss resulting from injury. However, previous studies have not specifically investigated how the program might impact the rate of anterior cruciate ligament (ACL) injury in male soccer players. Questions/purposes: The purpose of this study was to examine if the FIFA 11+ injury prevention program can (1) reduce the overall number of ACL injuries in men who play competitive college soccer and whether any potential reduction in rate of ACL injuries differed based on (2) game versus practice setting; (3) player position; (4) level of play (Division I or II); or (5) field type. Methods: This study was a prospective cluster randomized controlled trial, which was conducted in 61 Division I and Division II National Collegiate Athletic Association men’s soccer teams over the course of one competitive soccer season. The FIFA 11+ is a 15- to 20-minute on-the-field dynamic warm-up program used before training and games and was utilized as the intervention throughout the entire competitive season. Sixty-five teams were randomized: 34 to the control group (850 players) and 31 to the intervention group (675 players). Four intervention teams did not complete the study and did not submit their data, noting insufficient time to complete the program, reducing the number for per-protocol analysis to 61. Compliance to the FIFA 11+ program, athletic exposures, specific injuries, ACL injuries, and time loss resulting from injury were collected and recorded using a secure Internet-based system. At the end of the season, the data in the injury surveillance system were crosshatched with each individual institution’s internal database. At that time, the certified athletic trainer signed off on the injury collection data to confirm their accuracy and completeness. Results: A lower proportion of athletes in the intervention group experienced knee injuries (25% [34 of 136]) compared with the control group (75% [102 of 136]; relative risk [RR], 0.42; 95% confidence interval [CI], 0.29-0.61; p < 0.001). When the data were stratified for ACL injury, fewer ACL injuries were reported in the intervention group (16% [three of 19]) compared with the control group (84% [16 of 19]), accounting for a 4.25-fold reduction in the likelihood of incurring ACL injury (RR, 0.236; 95% CI, 0.193–0.93; number needed to treat = 70; p < 0.001). With the numbers available, there was no difference between the ACL injury rate within the FIFA 11+ group and the control group with respect to game and practice sessions (games—intervention: 1.055% [three of 15] versus control: 1.80% [12 of 15]; RR, 0.31; 95% CI, 0.09–1.11; p = 0.073 and practices—intervention: 0% [zero of four] versus control: 0.60% [four of four]; RR, 0.14; 95% CI, 0.01–2.59; p = 0.186). With the data that were available, there were no differences in incidence rate (IR) or injury by player position for forwards (IR control = 0.339 versus IR intervention = 0), midfielders (IR control = 0.54 versus IR intervention = 0.227), defenders (IR control = 0.339 versus IR intervention = 0.085), and goalkeepers (IR control = 0.0 versus IR intervention = 0.0) (p = 0.327). There were no differences in the number of ACL injuries for the Division I intervention group (0.70% [two of nine]) compared with the control group (1.05% [seven of nine]; RR, 0.30; CI, 0.06–1.45; p = 0.136). However, there were fewer ACL injuries incurred in the Division II intervention group (0.35% [one of 10]) compared with the control group (1.35% [nine of 10]; RR, 0.12; CI, 0.02–0.93; p = 0.042). There was no difference between the number of ACL injuries in the control group versus in the intervention group that occurred on grass versus turf (Wald chi square [1] = 0.473, b = 0.147, SE = 0.21, p = 0.492). However, there were more ACL injuries that occurred on artificial turf identified in the control group (1.35% [nine of 10]) versus the intervention group (0.35% [one of 10]; RR, 0.14; 95% CI, 0.02–1.10; p = 0.049). Conclusions: This program, if implemented correctly, has the potential to decrease the rate of ACL injury in competitive soccer players. In addition, this may also enhance the development and dissemination of injury prevention protocols and may mitigate risk to athletes who utilize the program consistently. Further studies are necessary to analyze the cost-effectiveness of the program implementation and to analyze the efficacy of the FIFA 11+ in the female collegiate soccer cohort. Level of Evidence: Level I, therapeutic study. © 2017, The Association of Bone and Joint Surgeons®.","","Anterior Cruciate Ligament; Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Chi-Square Distribution; Humans; Incidence; Linear Models; Logistic Models; Male; Odds Ratio; Primary Prevention; Prospective Studies; Risk Factors; Running; Sex Factors; Soccer; Time Factors; Warm-Up Exercise; Young Adult; adult; anterior cruciate ligament injury; Article; confidence interval; controlled study; health program; human; incidence; information processing; Internet; major clinical study; priority journal; randomized controlled trial (topic); risk factor; soccer player; anterior cruciate ligament; anterior cruciate ligament injury; biomechanics; chi square distribution; injuries; male; odds ratio; pathophysiology; primary prevention; procedures; prospective study; randomized controlled trial; running; sex difference; soccer; statistical model; time factor; warm up; young adult","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: a 13-year review, Am J Sports Med., 33, pp. 524-530, (2005); 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Silvers-Granelli; Velocity Physical Therapy, Los Angeles, 11611 San Vicente Boulevard, GF-1, 90049, United States; email: hollysilverspt@gmail.com","","Springer New York LLC","0009921X","","CORTB","28389864","English","Clin. Orthop. Relat. Res.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-85017162380" "Guskiewicz K.M.; Mihalik J.P.; Shankar V.; Marshall S.W.; Crowell D.H.; Oliaro S.M.; Ciocca M.F.; Hooker D.N.","Guskiewicz, Kevin M. (7004697944); Mihalik, Jason P. (8428192600); Shankar, Viswanathan (55247841000); Marshall, Stephen W. (7401823263); Crowell, Dean H. (23102422000); Oliaro, Scott M. (6508383225); Ciocca, Mario F. (36639671300); Hooker, Daniel N. (7003786170)","7004697944; 8428192600; 55247841000; 7401823263; 23102422000; 6508383225; 36639671300; 7003786170","Measurement of head impacts in collegiate football players: Relationship between head impact biomechanics and acute clinical outcome after concussion","2007","Neurosurgery","61","6","","1244","1252","8","291","10.1227/01.neu.0000306103.68635.1a","https://www.scopus.com/inward/record.uri?eid=2-s2.0-37649020145&doi=10.1227%2f01.neu.0000306103.68635.1a&partnerID=40&md5=52cb7004000c74c0302efcf3bf9f0915","Department of Exercise and Sport Science, Injury Prevention Research Center, University of North Carolina, Chapel Hill, NC, United States; Department of Exercise and Sport Science, Curriculum in Human Movement Science, University of North Carolina, Chapel Hill, NC, United States; Injury Prevention Research Center, Department of Biostatistics, University of North Carolina, Chapel Hill, NC, United States; Injury Prevention Research Center, Department of Epidemiology, University of North Carolina, Chapel Hill, NC, United States; Division of Sports Medicine, Campus Health Services, University of North Carolina, Chapel Hill, NC, United States; University of North Carolina at Chapel Hill, 209 Fetzer Gymnasium (CB# 8700), Chapel Hill, NC 27599, South Road, United States","Guskiewicz K.M., Department of Exercise and Sport Science, Injury Prevention Research Center, University of North Carolina, Chapel Hill, NC, United States, University of North Carolina at Chapel Hill, 209 Fetzer Gymnasium (CB# 8700), Chapel Hill, NC 27599, South Road, United States; Mihalik J.P., Department of Exercise and Sport Science, Curriculum in Human Movement Science, University of North Carolina, Chapel Hill, NC, United States; Shankar V., Injury Prevention Research Center, Department of Biostatistics, University of North Carolina, Chapel Hill, NC, United States; Marshall S.W., Injury Prevention Research Center, Department of Epidemiology, University of North Carolina, Chapel Hill, NC, United States; Crowell D.H., Division of Sports Medicine, Campus Health Services, University of North Carolina, Chapel Hill, NC, United States; Oliaro S.M., Division of Sports Medicine, Campus Health Services, University of North Carolina, Chapel Hill, NC, United States; Ciocca M.F., Division of Sports Medicine, Campus Health Services, University of North Carolina, Chapel Hill, NC, United States; Hooker D.N., Division of Sports Medicine, Campus Health Services, University of North Carolina, Chapel Hill, NC, United States","OBJECTIVE: To determine the relationship between recorded head accelerations and impact locations and acute clinical outcome of symptomatology, neuropsychological, and postural stability tests after cerebral concussion in Division I collegiate football players. METHODS: A prospective field study was used in which accelerometers were embedded in the football helmets of 88 collegiate football players. Linear and rotational accelerations of all head impacts sustained over the course of 2004 to 2006 National Collegiate Athletic Association football seasons were collected in real-time. Change scores were calculated on clinical measures from the players' preseason baseline to postinjury (within 48 h) and regressed against the recorded linear and rotational accelerations of the head at the time of the concussion. RESULTS: Thirteen concussions were recorded ranging in impact magnitudes of 60.51 to 168.71 g. Linear regression showed no significant relationships between impact magnitude (linear or rotational acceleration) or impact location and change scores for symptom severity, postural stability, or neurocognitive function (P > 0.05). CONCLUSION: Our findings suggest that football players are concussed by impacts to the head that occur at a wide range of magnitudes and that clinical measures of acute symptom severity, postural stability, and neuropsychological function all appear to be largely independent of impact magnitude and location. Because of the varying magnitudes and locations of impacts resulting in concussion as well as other factors such as the frequency of subconcussive impacts and number of previous concussions, it may be difficult to establish a threshold for concussive injury that can be applied to all football players. Copyright © by the Congress of Neurological Surgeons.","Acceleration; Helmet; Injury threshold; Mild traumatic brain injury; Neuropsychological function; Postural stability","Acceleration; Adolescent; Adult; Athletic Injuries; Brain Concussion; Follow-Up Studies; Football; Head Movements; Head Protective Devices; Humans; Linear Models; Male; Models, Biological; Musculoskeletal Equilibrium; Neuropsychological Tests; Outcome Assessment (Health Care); Prospective Studies; Retrospective Studies; Universities; acceleration; accelerometer; adult; article; biomechanics; body posture; brain concussion; cognition; disease severity; football; head injury; helmet; human; major clinical study; measurement; outcome assessment; priority journal; prospective study; scoring system; symptomatology; traumatic brain injury","Concussion (mild traumatic brain injury) and the team physician: A consensus statement, Med Sci Sports Exerc, 38, pp. 395-399, (2006); Practice parameter: The management of concussion in sports (summary statement). 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Daniel J.C., Olesniewicz M.H., Reeves D.L., Tam D., Bleiberg J., Thatcher R., Salazar A., Repeated measures of cognitive processing efficiency in adolescent athletes: Implications for monitoring recovery from concussion, Neuropsychiatry Neuropsychol Behav Neurol, 12, pp. 167-169, (1999); Delaney J.S., Lacroix V.J., Leclerc S., Johnston K.M., Concussions among university football and soccer players, Clin J Sport Med, 12, pp. 331-338, (2002); Duma S.M., Manoogian S.J., Bussone W.R., Brolinson P.G., Goforth M.W., Donnenwerth J.J., Greenwald R.M., Chu J.J., Crisco J.J., Analysis of real-time head accelerations in collegiate football players, Clin J Sport Med, 15, pp. 3-8, (2005); Echemendia R.J., Cantu R.C., Return to play following sports-related mild traumatic brain injury: The role for neuropsychology, Appl Neuropsychol, 10, pp. 48-55, (2003); Echemendia R.J., Putukian M., Mackin R.S., Julian L., Shoss N., Neuropsychological test performance prior to and following sports-related mild traumatic brain injury, Clin J Sport Med, 11, pp. 23-31, (2001); Gennarelli T.A., Mechanisms of brain injury, J Emerg Med, 11, SUPPL. 1, pp. 5-11, (1993); Giza C.C., Hovda D.A., The neurometabolic cascade of concussion, J Athl Train, 36, pp. 228-235, (2001); Guskiewicz K.M., Bruce S.L., Cantu R.C., Ferrara M.S., Kelly J.P., McCrea M., Putukian M., Valovich McLeod T.C., National Athletic Trainers' Association Position Statement: Management of sport-related concussion, J Athl Train, 39, pp. 280-297, (2004); Guskiewicz K.M., McCrea M., Marshall S.W., Cantu R.C., Randolph C., Barr W., Onate J.A., Kelly J.P., Cumulative effects associated with recurrent concussion in collegiate football players: The NCAA Concussion Study, JAMA, 290, pp. 2549-2555, (2003); Guskiewicz K.M., Riemann B.L., Perrin D.H., Nashner L.M., Alternative approaches to the assessment of mild head injury in athletes, Med Sci Sports Exerc, 29, SUPPL. 7, (1997); Guskiewicz K.M., Ross S.E., Marshall S.W., Postural stability and neuropsychological deficits after concussion in collegiate athletes, J Athl Train, 36, pp. 263-273, (2001); Guskiewicz K.M., Weaver N.L., Padua D.A., Garrett Jr W.E., Epidemiology of concussion in collegiate and high school football players, Am J Sports Med, 28, pp. 643-650, (2000); Hugenholtz H., Richard M.T., Return to athletic competition following concussion, Can Med Assoc J, 127, pp. 827-829, (1982); Iverson G.L., Gaetz M., Lovell M.R., Collins M.W., Cumulative effects of concussion in amateur athletes, Brain Inj, 18, pp. 433-443, (2004); Kelly J.P., Traumatic brain injury and concussion in sports, JAMA, 282, pp. 989-991, (1999); Langlois J.A., Rutland-Brown W., Wald M.M., The epidemiology and impact of traumatic brain injury: A brief overview, J Head Trauma Rehabil, 21, pp. 375-378, (2006); Levasseur J.E., Alessandri B., Reinert M., Clausen T., Zhou Z., Altememi N., Bullock M.R., Lactate, not glucose, up-regulates mitochondrial oxygen consumption both in sham and lateral fluid percussed rat brains, Neurosurgery, 59, pp. 1122-1131, (2006); Lovell M.R., Collins M.W., Neuropsychological assessment of the college football player, J Head Trauma Rehabil, 13, pp. 9-26, (1998); McCaffrey M.A., Mihalik J.P., Crowell D.H., Shields E.W., Guskiewicz K.M., Measurement of head impacts in Division I football players: Clinical measures of concussion after high- and low-magnitude impacts, Neurosurgery, 61, pp. 1236-1243, (2007); McCrea M., Guskiewicz K.M., Marshall S.W., Barr W., Randolph C., Cantu R.C., Onate J.A., Yang J., Kelly J.P., Acute effects and recovery time following concussion in collegiate football players: The NCAA Concussion Study, JAMA, 290, pp. 2556-2563, (2003); McIntosh T., Vink R., Biomechanical and pathophysiologic mechanisms in experimental mild to moderate traumatic brain injury, Mild to Moderate Head Injury, pp. 35-45, (1989); Meyer J.S., Kondo A., Nomura F., Sakamoto K., Teraura T., Cerebral hemodynamics and metabolism following experimental head injury, J Neurosurg, 32, pp. 304-319, (1970); Mihalik J.P., Bell D.R., Marshall S.W., Guskiewicz K.M., Measurement of head impacts in Division I football players: An investigation of positional and event-type differences, Neurosurgery, 61, pp. 1229-1235, (2007); 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Riemann B.L., Guskiewicz K.M., Effects of mild head injury on postural stability as measured through clinical balance testing, J Athl Train, 35, pp. 19-25, (2000); Riemann B.L., Guskiewicz K.M., Shields E.W., Relationship between clinical and forceplate measures of postural stability, J Sport Rehabil, 8, pp. 71-82, (1999); Thurman D.J., Alverson C., Browne D., Dunn K.A., Guerrero J., Johnson R., Johnson V., Langlois J., Pikey D., Sniezek J.E., Toal S., Traumatic Brain Injury in the United States: A Report to Congress, (1999); Thurman D.J., Branche C.M., Sniezek J.E., The epidemiology of sports-related traumatic brain injuries in the United States: Recent developments, J Head Trauma Rehabil, 13, pp. 1-8, (1998); Viano D.C., Casson I.R., Pellman E.J., Zhang L., King A.I., Yang K.H., Concussion in professional football: Brain responses by finite element analysis. Part 9, Neurosurgery, 57, pp. 891-916, (2005); Zhu W., Making bootstrap statistical inferences: Atutorial, Res Q Exerc Sport, 68, pp. 44-55, (1997)","K.M. Guskiewicz; University of North Carolina at Chapel Hill, 209 Fetzer Gymnasium (CB# 8700), Chapel Hill, NC 27599, South Road, United States; email: gus@email.unc.edu","","","0148396X","","NRSRD","18162904","English","Neurosurgery","Article","Final","","Scopus","2-s2.0-37649020145" "Myer G.D.; Ford K.R.; Palumbo J.P.; Hewett T.E.","Myer, Gregory D. (6701852696); Ford, Kevin R. (7102539333); Palumbo, Joseph P. (58334325000); Hewett, Timothy E. (7005201943)","6701852696; 7102539333; 58334325000; 7005201943","Neuromuscular training improves performance and lower-extremity biomechanics in female athletes","2005","Journal of Strength and Conditioning Research","19","1","","51","60","9","541","10.1519/13643.1","https://www.scopus.com/inward/record.uri?eid=2-s2.0-15744369503&doi=10.1519%2f13643.1&partnerID=40&md5=eb9278b27a53b32da43853c1e5760592","Cincinnati Children's Hospital, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH 45229, United States; Depts. Pediat. and Orthoped. Surg., University of Cincinnati, College of Medicine, Cincinnati, OH 45267, United States; Dept. of Rehabilitation Sciences, College of Allied Health Sciences, Cincinnati, OH 45267, United States","Myer G.D., Cincinnati Children's Hospital, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH 45229, United States; Ford K.R., Cincinnati Children's Hospital, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH 45229, United States; Palumbo J.P., Cincinnati Children's Hospital, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH 45229, United States; Hewett T.E., Depts. Pediat. and Orthoped. Surg., University of Cincinnati, College of Medicine, Cincinnati, OH 45267, United States, Dept. of Rehabilitation Sciences, College of Allied Health Sciences, Cincinnati, OH 45267, United States","The purpose of this study was to examine the effects of a comprehensive neuromuscular training program on measures of performance and lower-extremity movement biomechanics in female athletes. The hypothesis was that significant improvements in measures of performance would be demonstrated concomitant with improved biomechanical measures related to anterior cruciate ligament injury risk. Forty-one female basketball, soccer, and Volleyball players (age, 15.3 ± 0.9 years; weight, 64.8 ± 9.96 kg; height, 171.2 ± 7.21 cm) underwent 6 weeks of training that included 4 main components (plyometric and movement, core strengthening and balance, resistance training, and speed training). Twelve age-, height-, and weight-matched controls underwent the same testing protocol twice 6 weeks apart. Trained athletes demonstrated increased predicted 1 repetition maximum squat (92%) and bench press (20%). Right and left single-leg hop distance increased 10.39 cm and 8.53 cm, respectively, and vertical jump also increased from 39.9 ± 0.9 cm to 43.2 ± 1.1 cm with training. Speed in a 9.1-m sprint improved from 1.80 ± 0.02 seconds to 1.73 ± 0.01 seconds. Pre- and posttest 3-dimensional motion analysis demonstrated increased knee flexion-extension range of motion during the landing phase of a vertical jump (right, 71.9 ± 1.4° to 76.9 ± 1.4°; left, 71.3 ± 1.5° to 77.3 ± 1.4°). Training decreased knee valgus (28%) and varus (38%) torques. Control subjects did not demonstrate significant alterations during the 6-week interval. The results of this study support the hypothesis that the combination of multiple-injury prevention-training components into a comprehensive program improves measures of performance and movement biomechanics. © 2005 National Strength & Conditioning Association.","ACL; Dynamic neuromuscular training; Female sports; Knee valgus moment; Knee-injury prevention training","Adolescent; Biomechanics; Case-Control Studies; Cohort Studies; Female; Humans; Knee Injuries; Lower Extremity; Muscle, Skeletal; Physical Education and Training; Physical Fitness; Range of Motion, Articular; Sports; Torque; adolescent; anterior cruciate ligament; anterior cruciate ligament rupture; article; athlete; basketball; biomechanics; controlled study; female; human; jumping; leg; major clinical study; neuromuscular function; performance; sport; torque; training; valgus knee; varus knee","Adams K., O'Shea J.P., O'Shea K.L., Climstein M., The effect of six weeks of squat, plyometric and squat-plyometric training on power production, J. 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Strength Cond. Res., 15, pp. 136-143, (2001); Rooks D.S., Micheli L.J., Musculoskeletal assessment and training: The young athlete, Clin. Sports Med., 7, pp. 641-677, (1988); Stockbrugger B.A., Haennel R.G., Validity and reliability of a medicine ball explosive power test, J. Strength Cond. Res., 15, pp. 431-438, (2001); Tropp H., Ekstrand J., Gillquist J., Stabilometry in functional instability of the ankle and its value in predicting injury, Med. Sci. Sports Exerc., 16, pp. 64-66, (1984); Tropp H., Odenrick P., Postural control in single-limb stance, J. Orthop. Res., 6, pp. 833-839, (1988); Vossen J.F., Burke D.G., Vossen D.P., Comparison of dynamic push-up training and plyometric push-up training on upper-body power and strength, J. Strength Cond. Res., 14, pp. 248-253, (2000); Wathan D., Load assignment, Essentials of Strength Training and Conditioning, pp. 435-439, (1994); Winter D.A., Biomechanics and Motor Control of Human Movement, (1990); Wroble R.R., Moxley D.R., The effect of winter sports participation on high school football players: Strength, power, agility, and body composition, J. Strength Cond. Res., 15, pp. 132-135, (2001)","G.D. Myer; Cincinnati Children's Hospital, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH 45229, United States; email: greg.myer@chmcc.org","","","10648011","","","15705045","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-15744369503" "Piras A.; Vickers J.N.","Piras, Alessandro (36089214500); Vickers, Joan N. (7103183170)","36089214500; 7103183170","The effect of fixation transitions on quiet eye duration and performance in the soccer penalty kick: Instep versus inside kicks","2011","Cognitive Processing","12","3","","245","255","10","85","10.1007/s10339-011-0406-z","https://www.scopus.com/inward/record.uri?eid=2-s2.0-80755153774&doi=10.1007%2fs10339-011-0406-z&partnerID=40&md5=ee1ca344bd529c41ccb4506947149206","Department of Human and General Physiology, University of Bologna, 40126 Bologna, Piazza di Porta S. Donato, 2, Italy; Faculty of Kinesiology, University of Calgary, Calgary T3L 1R8, Canada","Piras A., Department of Human and General Physiology, University of Bologna, 40126 Bologna, Piazza di Porta S. Donato, 2, Italy; Vickers J.N., Faculty of Kinesiology, University of Calgary, Calgary T3L 1R8, Canada","Male goalkeepers of intermediate skill level attempted to stop penalty kicks executed with the instep and inside foot, in situ. A mobile eye tracker and an external camera were used to collect the gaze and motor behaviors of the goalkeepers, as well as the penalty takers' motor behaviors and flight of the ball. Percent saves was greater during instep (28%) than inside foot kicks (12%), but we detected few differences in fixation frequency, location, duration, or transitions that could be attributed to the type of kick used. Fixation transitions (or the frequency of gaze shifts between locations) were significantly higher on goals than on saves. During the final phase of the kicking action, the quiet eye was located on the visual pivot and was longer during saves than goals. Furthermore, when the final fixation on the ball exceeded approximately 1,100 ms, then the likelihood of goals increased. The results are discussed in light of past studies in goaltending and the dual demands of motor tasks that require information be fixated both early and late at spatial locations that exceed the limits of focal vision. © Marta Olivetti Belardinelli and Springer-Verlag 2011.","Expertise; Fixations; Gaze; Perception-action coupling; Visual pivot","Adolescent; Analysis of Variance; Attention; Biomechanics; Eye Movements; Foot; Humans; Male; Psychomotor Performance; Reaction Time; Soccer; Task Performance and Analysis; Time Factors; Visual Perception; Young Adult; adult; article; controlled study; depth perception; eye fixation; gaze; human; human experiment; latent period; male; motor performance; priority journal; task performance; visual information; visual orientation; visuomotor coordination","Adolphe R.M., Vickers J.N., Laplante G., The effects of training visual attention on gaze behaviour and accuracy: A pilot study, Int J Sports Vis, 4, 1, pp. 28-33, (1997); Bar-Eli M., Azar O.H., Penalty kicks in soccer: An empirical analysis of shooting strategies and goalkeepers' preferences, Soccer Soc, 10, 2, pp. 183-191, (2009); Button C., Dicks M., Haines R., Barker R., Davids K., Statistical modelling of gaze behaviour as categorical time series: What you should watch to save soccer penalties, Cogn Process, (2010); Causer J., Bennett S.J., Holmes P.S., Janelle C.M., Williams A.M., Quiet eye duration and gun motion in elite shotgun shooting, Med Sci Sports Exerc, 42, 8, pp. 1599-1608, (2010); Dicks M., Button C., Davids K., Examination of gaze behaviors under in situ and video simulation task constraints reveals differences in information pickup for perception and action, Attention. Percept Psychophys, 72, 3, pp. 706-720, (2010); Dicks M., Button C., Davids K., Availability of advance visual information constrains association-football goalkeeping performance during penalty kicks, Perception, 39, pp. 1111-1124, (2010); The penalty kick, The Law of the Game, pp. 41-42, (2008); Franks I.M., Harvey T., Cues for goalkeepers: High-tech methods used to measure penalty shot response, Soccer J, 42, pp. 30-38, (1997); Harle S.K., Vickers J.N., Training quiet eye improves accuracy in the basketball free throw, Sport Psychologist, 15, 3, pp. 289-305, (2001); Kim S., Lee S., Gaze behavior of elite soccer goalkeeper in successful penalty kick defense, Int J Appl Sports Sci, 18, 1, pp. 96-110, (2006); Kuhn W., Penalty-kick strategies for shooters and goalkeepers, Science and Football, pp. 489-492, (1988); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, 3, pp. 211-234, (1998); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 441-448, (1988); 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Van Der Kamp J., A field simulation study of the effectiveness of penalty kick strategies in soccer: Late alteration of kick direction increase errors and reduce accuracy, J Sports Sci, 24, pp. 467-477, (2006); Vickers J.N., Visual Control When Aiming at a Far Target, Journal of Experimental Psychology: Human Perception and Performance, 22, 2, pp. 342-354, (1996); Vickers J.N., Perception, cognition, and decision training: The quiet eye in action, Human Kinetics, Windsor, (2007); Vickers J.N., Adolphe R.A., Gaze behaviour during a ball tracking and aiming skill, Int J Sports Vis, 4, 1, pp. 18-27, (1997); Vickers J.N., Williams A.M., Performing under pressure: The effects of physiological arousal, cognitive anxiety, and gaze control in biathlon, Journal of Motor Behavior, 39, 5, pp. 381-394, (2007); Vickers J.N., Rodrigues S.T., Edworthy G., Quiet eye and accuracy in the dart throw, Int J Sports Vis, 6, pp. 30-36, (2000); Vine S.J., Wilson M.R., The influence of quiet eye training and pressure on attention and visuo-motor control, Acta Psychologica, (2011); Vine S.J., Moore L., Wilson M.R., Quiet eye training facilitates competitive putting performance in elite golfers, Front Psychol, (2011); Williams A.M., Perceptual skill in soccer, J Sports Sci, 18, pp. 737-750, (2000); Williams A.M., Burwitz L., Advance cue utilization in soccer, Science and Football, pp. 239-243, (1993); Williams A.M., Elliott D., Anxiety, expertise, and visual search in karate, J Sport Exerc Psychol, 21, pp. 361-374, (1999); Williams A.M., Davids K., Burwitz L., Williams J.G., Visual search strategy in experienced and inexperienced soccer players, Res Q Exerc Sport, 65, 2, pp. 127-135, (1994); Williams A.M., Singer R.N., Frehlich S.G., Quiet eye duration, expertise, and task complexity in near and far aiming tasks, Journal of Motor Behavior, 34, 2, pp. 197-207, (2002)","J.N. Vickers; Faculty of Kinesiology, University of Calgary, Calgary T3L 1R8, Canada; email: vickers@ucalgary.ca","","","16124790","","","21544570","English","Cogn. Process.","Article","Final","","Scopus","2-s2.0-80755153774" "Sigward S.; Powers C.M.","Sigward, Susan (9735729200); Powers, Christopher M. (7103284208)","9735729200; 7103284208","The influence of experience on knee mechanics during side-step cutting in females","2006","Clinical Biomechanics","21","7","","740","747","7","73","10.1016/j.clinbiomech.2006.03.003","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33745503673&doi=10.1016%2fj.clinbiomech.2006.03.003&partnerID=40&md5=485f674394f56ac45493e8ff8e4ea461","Musculoskeletal Biomechanics Research Laboratory, Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 90089, United States","Sigward S., Musculoskeletal Biomechanics Research Laboratory, Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 90089, United States; Powers C.M., Musculoskeletal Biomechanics Research Laboratory, Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 90089, United States","Background: It is thought that female athletes with limited experience in a sport perform athletic maneuvers differently than their more experienced counterparts, and that they do so in a manner that places them at greater risk for injury. The purpose of this study was to evaluate the influence of athletic experience on knee mechanics during the execution of a side-step cutting maneuver in young female athletes. Methods: Three-dimensional kinematics, ground reaction forces and electromyographic activity (surface electrodes) were recorded during the early deceleration phase of side-step cutting in 30 high school females (15 experienced, 15 novice). Group differences in knee joint kinematics, peak moments, net joint moment impulse and average muscle activation were evaluated. Findings: No significant group differences were found in knee kinematics. When compared to experienced females, novice females demonstrated significantly smaller flexor, adductor, and internal rotator peak moments and smaller net joint moment impulse in all three planes at the knee. No group differences were found for average EMG; however, novice athletes had significantly greater co-contraction at the knee. Interpretation: The finding of smaller knee moments and greater muscle co-contraction in the novice group suggests that these athletes may adopt a protective strategy in response to a relatively unfamiliar task. In addition, these results suggest that increased moments at the knee emerge with experience, indicating that more skilled athletes may be at greater risk for anterior cruciate ligament (ACL) injury. © 2006 Elsevier Ltd. All rights reserved.","ACL; Experience; Knee","Adaptation, Physiological; Adolescent; Biomechanics; Female; Humans; Knee; Motor Skills; Movement; Muscle Contraction; Muscle, Skeletal; Range of Motion, Articular; Running; Soccer; Task Performance and Analysis; Biomechanics; Human engineering; Joints (anatomy); Kinematics; Ligaments; adolescent; anterior cruciate ligament; article; athlete; controlled study; deceleration; electrode; electromyography; female; gait; ground reaction force; hamstring; human; joint mobility; kinematics; knee function; muscle contraction; normal human; priority journal; quadriceps femoris muscle; statistical significance; walking speed; Anterior cruciate ligament (ACL) injury; Athletic experience; Electromyographic activity; Knee mechanics; Muscle","Alexander E.J., Andriacchi T.P., Correcting for deformation in skin-based marker systems, J. Biomech., 34, pp. 355-361, (2001); Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. NCAA data and review of literature, Am. J. Sports. Med., 23, pp. 694-701, (1995); Besier T.F., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Med. Sci. Sports Exerc., 35, pp. 119-127, (2003); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am. J. Sports Med., 30, pp. 261-267, (2002); Cram J., Kasman G., Holtz J., Introduction to Surface Electromyography, (1998); Davis I.I.I., Ounpuu S., Tyburski D., Gage J.R., A gait analysis data collection and reduction technique, Hum. Movement Sci., 10, pp. 575-587, (1991); Durselen L., Claes L., Kiefer H., The influence of muscle forces and external loads on cruciate ligament strain, Am. J. Sports Med., 23, pp. 129-136, (1995); Eloranta V., Influence of sports background on leg muscle coordination in vertical jumps, Electromyogr. Clin. Neurophysiol., 43, pp. 141-156, (2003); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med. Sci. Sports Exerc., 35, pp. 1745-1750, (2003); Fung D.T., Zhang L.Q., Modeling of ACL impingement against the intercondylar notch, Clin. Biomech., 18, pp. 933-941, (2003); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S.J., Colosimo A.J., McLean S.G., van den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am. J. Sports Med., 33, pp. 492-501, (2005); Humphrey D.R., Reed D.J., Separate cortical systems for control of joint movement and joint stiffness: reciprocal activation and coactivation of antagonist muscles, Adv. Neurol., 39, pp. 347-372, (1983); Huston L.J., Wojtys E.M., Neuromuscular performance characteristics in elite female athletes, Am. J. Sports Med., 24, pp. 427-436, (1996); Kadaba M.P., Ramakrishnan H.K., Wootten M.E., Gainey J., Gorton G., Cochran G.V., Repeatability of kinematic, kinetic, and electromyographic data in normal adult gait, J. Orthop. Res., 7, pp. 849-860, (1989); Kadaba M.P., Ramakrishnan H.K., Wootten M.E., Measurement of lower extremity kinematics during level walking, J. Orthop. Res., 8, pp. 383-392, (1990); Lephart S.M., Ferris C.M., Riemann B.L., Myers J.B., Fu F.H., Gender differences in strength and lower extremity kinematics during landing, Clin. Sports Med., pp. 162-169, (2002); Lloyd D.G., Buchanan T.S., Strategies of muscular support of varus and valgus isometric loads at the human knee, J. Biomech., 34, pp. 1257-1267, (2001); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin. Biomech., 16, pp. 438-445, (2001); Malone T.R., Hardaker W.T., Garrett W.E., Feagin J.A., Bassett F.H., Relationship of gender to ACL injuries in intercollegiate basketball players, J. Southern Orthop. Assoc., 2, pp. 694-701, (1993); Manal K., McClay I., Stanhope S., Richards J., Galinat B., Comparison of surface mounted markers and attachment methods in estimating tibial rotations during walking: an in vivo study, Gait Post., 11, pp. 38-45, (2000); Manal K., McClay I., Richards J., Galinat B., Stanhope S., Knee moment profiles during walking: errors due to soft tissue movement of the shank and the influence of the reference coordinate system, Gait Post., 15, pp. 10-17, (2002); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J. Orthop. Res., 13, pp. 930-935, (1995); McLean S.G., Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: potential for injury in women, Med. Sci. Sports Exerc., 31, pp. 959-968, (1999); McLean S.G., Huang X.M., Su A., van den Bogert A.J., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clin. Biomech., 19, pp. 828-838, (2004); McLean S.G., Lipfert S.W., van den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med. Sci. Sports Exerc., 36, pp. 1008-1016, (2004); McLean S.G., Huang X., van den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: implications for ACL injury, Clin. Biomech., 20, pp. 863-870, (2005); McNair P.J., Marshall R.N., Matheson J.A., Important features associated with acute anterior cruciate ligament injury, New Zealand Med. J., 103, pp. 537-539, (1990); Messina D.F., Farney W.C., DeLee J.C., The incidence of injury in Texas high school basketball. A prospective study among male and female athletes, Am. J. Sports. Med., 27, pp. 294-299, (1999); Milner T.E., Cloutier C., Compensation for mechanically unstable loading in voluntary wrist movement, Exp. Brain Res., 94, pp. 522-532, (1993); Osu R., Franklin D.W., Kato H., Gomi H., Domen K., Yoshioka T., Kawato M., Short- and long-term changes in joint co-contraction associated with motor learning as revealed from surface EMG, J. Neurophysiol., 88, pp. 991-1004, (2002); Piazza S.J., Cavanagh P.R., Measurement of the screw-home motion of the knee is sensitive to errors in axis alignment, J. Biomech., 33, pp. 1029-1034, (2000); Pollard C.D., Davis I.M., Hamill J., Influence of gender on hip and knee mechanics during a randomly cued cutting maneuver, Clin. Biomech., 19, pp. 1022-1031, (2004); Ramakrishnan H.K., Kadaba M.P., On the estimation of joint kinematics during gait, J. Biomech., 24, pp. 969-977, (1991); Schneider K., Zernicke R.F., Schmidt R.A., Hart T.J., Changes in limb dynamics during the practice of rapid arm movements, J. Biomech., 22, pp. 805-817, (1989); Sigward S., Powers C., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clin. Biomech., 21, pp. 41-48, (2006); Thoroughman K.A., Shadmehr R., Electromyographic correlates of learning an internal model of reaching movements, J. Neurosci., 19, pp. 8573-8588, (1999); Traina S.M., Bromberg D.F., ACL injury patterns in women, Orthopedics, 20, pp. 545-549, (1997); Winter D.A., Biomechanics and Motor Control of Human Movement. second ed., (1990); Woltering H.J., A Fortran package for generalized, cross-validatory spline smoothing and differentiation, Adv. Eng. Software, 8, pp. 104-113, (1986); Young R.P., Marteniuk R.G., Changes in inter-joint relationships of muscle moments and powers accompanying the acquisition of a multi-articular kicking task, J. Biomech., 28, pp. 701-713, (1995)","S. Sigward; Musculoskeletal Biomechanics Research Laboratory, Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 90089, United States; email: sigward@usc.edu","","","02680033","","CLBIE","16675083","English","Clin. Biomech.","Article","Final","","Scopus","2-s2.0-33745503673" "Kannus P.; Bergfeld J.; Järvinen M.; Johnson R.J.; Pope M.; Renström P.; Yasuda K.","Kannus, Pekka (7102004990); Bergfeld, John (7004985410); Järvinen, Markku (7103143055); Johnson, Robert J. (55501411100); Pope, Malcolm (7202221281); Renström, Per (7006103028); Yasuda, Kazunori (55748357600)","7102004990; 7004985410; 7103143055; 55501411100; 7202221281; 7006103028; 55748357600","Injuries to the Posterior Cruciate Ligament of the Knee","1991","Sports Medicine","12","2","","110","131","21","91","10.2165/00007256-199112020-00004","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0025873683&doi=10.2165%2f00007256-199112020-00004&partnerID=40&md5=0f5a099bb53799baf7d3f55cf2b2b152","Mcclure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, Burlington, Vermont, United States; Tampere Research Station of Sports Medicine, The UKK-Institute for Health Promotion Research, Tampere, Finland; Department of Surgery, Section of Orthopaedics, University Central Hospital, Tampere, Finland; Department of Orthopaedic Surgery, Section of Sports Medicine, The Cleveland Clinic Foundation, Cleveland, Ohio, United States; Department of Orthopaedic Surgery, Section of Knee Joint Surgery and Sports Medicine, School of Medicine, Hokkaido University, Sapporo, Japan; Tampere Research Station of Sports Medicine, Tampere, SF-33500, Kaupinpuistonkatu 1, Finland","Kannus P., Mcclure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, Burlington, Vermont, United States, Tampere Research Station of Sports Medicine, The UKK-Institute for Health Promotion Research, Tampere, Finland, Tampere Research Station of Sports Medicine, Tampere, SF-33500, Kaupinpuistonkatu 1, Finland; Bergfeld J., Department of Orthopaedic Surgery, Section of Sports Medicine, The Cleveland Clinic Foundation, Cleveland, Ohio, United States; Järvinen M., Tampere Research Station of Sports Medicine, The UKK-Institute for Health Promotion Research, Tampere, Finland, Department of Surgery, Section of Orthopaedics, University Central Hospital, Tampere, Finland; Johnson R.J., Mcclure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, Burlington, Vermont, United States; Pope M., Mcclure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, Burlington, Vermont, United States; Renström P., Mcclure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, Burlington, Vermont, United States; Yasuda K., Mcclure Musculoskeletal Research Center, Department of Orthopaedics and Rehabilitation, University of Vermont, Burlington, Vermont, United States, Department of Orthopaedic Surgery, Section of Knee Joint Surgery and Sports Medicine, School of Medicine, Hokkaido University, Sapporo, Japan","The posterior cruciate ligament (PCL) is the strongest ligament about the knee and is approximately twice as strong as the anterior cruciate ligament. Its main function is to prevent the posterior dislocation of the tibia in relation to the femur, providing 95% of the strength to resist the tibial posterior displacement. Along with the anterior cruciate ligament (ACL) the PCL controls the passive ‘screw home’ mechanism of the knee in terminal knee extension. It also provides mechanical support for the collateral ligaments during valgus or varus stress of the knee. PCL ruptures are uncommon apparently due to its strong fibre structure. The most frequent injury mechanism in isolated PCL tears is a direct blow on the anterior tibia with the knee flexed thus driving the tibia posteriorly. Automobile accidents (in which the knee hits the dashboard) and soccer injuries (in which an athlete receives a blow to the anterior surface of the tibia during knee flexion) characteristically produce this type of injury. In other PCL injury mechanisms (hyperextension, hyperflexion or rotational injuries with associated valgum/varum stress), other knee structures are also often damaged. The most characteristic diagnostic finding in a knee with a PCL rupture is the ‘posterior sag sign’ meaning the apparent disappearance of the tibial tubercle in lateral inspection when the knee is flexed 90°. This is due to gravity-assisted posterior displacement of the tibia in relation to the femur. A positive posterior drawer test performed at 90° of flexion and a knee hyperextension sign are sensitive but nonspecific tests. False negative findings are frequent, especially in acute cases. If necessary, the clinical diagnosis of the PCL tear can be verified by magnetic resonance imaging, examination under anaesthesia, arthroscopy, or a combination of these modalities. If a PCL avulsion fragment has been dislocated, surgical treatment is recommended. In isolated, complete midsubstance tears of the PCL the majority of the recent studies recommend conservative treatment, since abnormal residual posterior laxity in most of these knees is consistent with functional stability and minimal symptoms. This has been the case even in athletes. In isolated PCL tears, the outcome seems to depend more on the muscular (quadriceps) status of the knee than on the amount of residual posterior laxity. Therefore, the conservative treatment protocol emphasises intensive quadriceps exercises, and only a short (under 2 weeks) immobilisation period followed by early controlled activities and early weightbearing. According to the current concept, acute phase surgery (primary PCL repair with augmentation, or primary PCL reconstruction) is indicated in fresh injuries of the PCL associated with disruptions of other major ligaments or capsular structures. Simultaneously with the PCL surgery, all the other damaged structures should also be repaired. Even with surgery, however, the prognosis is poorer than in isolated PCL tears. In chronic PCL insufficiency a reconstruction with bone-patella tendon-bone autograft or allograft can be considered, if the patient suffers from repeated giving way symptoms which are not resolved by rehabilitation. © 1991, Adis International Limited. All rights reserved.","","Adult; Case Report; Female; Follow-Up Studies; Human; Knee Injuries; Male; Middle Age; Posterior Cruciate Ligament; Prognosis; Support, Non-U.S. Gov't; Support, U.S. Gov't, P.H.S.; adult; anatomy; biomechanics; case report; female; human; knee cruciate ligament; knee ligament injury; male; review; sport injury; traffic accident","Abbott L.C., Saunders J.B., Bost F.C., Anderson C.E., Injuries to the ligaments of the knee, Journal of Bone and Joint Surgery, 26, pp. 503-521, (1944); Antich T.J., Brewster C.E., Rehabilitation of the nonreconstructed anterior cruciate ligament-deficient knee, Clinics in Sports Medicine, 7, pp. 813-826, (1988); Arnoczky S.P., Warren R.F., Anatomy of the cruciate ligaments, The crucial ligaments, pp. 179-195, (1988); Arvidsson I., A study of rehabilitation after knee surgery with special emphasis on pain inhibition on voluntary muscle activation, (1985); Arvidsson I., Reduction of pain inhibition on voluntary muscle activation by epidural analgesia, Orthopedics, 9, pp. 1415-1419, (1986); Baker C.L., Norwood L.A., Hughston J.C., Acute combined posterior cruciate and posterolateral instability of the knee, American Journal of Sports Medicine, 12, pp. 204-208, (1984); Balkfors B., The course of knee-ligament injuries, Acta Orthopaedica Scandinavica, (1982); Barford B., Posterior cruciate ligament-reconstruction by transposition of the popliteal tendon, Acta Orthopaedica Scandinavica, 42, pp. 438-439, (1971); Barton T.M., Torg J.S., Das M., Posterior cruciate ligament insufficiency, Sports Medicine, 1, pp. 419-430, (1984); Barton T.M., Torg J.S., Natural history of the posterior cruciate ligament deficient knee, American Journal of Sports Medicine, 13, (1985); Beynnon B., Howe J.G., Pope M.H., Johnson R.J., Fleming B.C., Anterior cruciate ligament strain in vivo, International Orthopaedics, (1991); Bianchi M., Acute tears of the posterior cruciate ligament: clinical study and results of operative treatment in 27 cases, American Journal of Sports Medicine, 11, pp. 308-314, (1983); 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(35194552600); McNaughton, L.R. (56246104100); Greig, M. (23034263700); Lohkamp, M. (15069322600); Lovell, R. (7102670658)","35194552600; 56246104100; 23034263700; 15069322600; 7102670658","Soccer fatigue, sprinting and hamstring injury risk","2009","International Journal of Sports Medicine","30","8","","573","578","5","133","10.1055/s-0029-1202822","https://www.scopus.com/inward/record.uri?eid=2-s2.0-71049142728&doi=10.1055%2fs-0029-1202822&partnerID=40&md5=d9d3ae7bc31d094383b23482813166f9","Department of Sport, Health and Exercise Science, University of Hull, Hull, United Kingdom; Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom","Small K., Department of Sport, Health and Exercise Science, University of Hull, Hull, United Kingdom; McNaughton L.R., Department of Sport, Health and Exercise Science, University of Hull, Hull, United Kingdom; Greig M., Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom; Lohkamp M., Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom; Lovell R., Department of Sport, Health and Exercise Science, University of Hull, Hull, United Kingdom","The aim of this study was to investigate the effect of a multi-directional soccer-specific fatigue protocol on sprinting kinematics in relation to hamstring injury risk. Nine semi-professional soccer players (Mean±SD: Age: 21.3±2.9year; Height 185.0±8.7cm; Body Mass 81.6±6.7kg) completed the SAFT90; a multi-directional, intermittent 90min exercise protocol representative of soccer match-play. The 10m sprint times and three-dimensional kinematic data were recorded using a high-speed motion capture system (Qualisys Track Manager(«)) every 15min during the SAFT90. A significant time dependent increase was observed in sprint time during the SAFT90 (P<0.01) with a corresponding significant decrease in stride length (P<0.01). Analysis of the kinematic sprint data revealed significantly reduced combined maximal hip flexion and knee extension angle, indicating reduced hamstring length, between pre-exercise and half-time (P<0.01) and pre-exercise and full-time (P<0.05). These findings revealed that the SAFT90 produced time dependent impairments in sprinting performance and kinematics of technique which may result from shorter hamstring muscle length. Alterations in sprinting technique may have implications for the increased predisposition to hamstring strain injury during the latter stages of soccer match-play.","Kinematics; Match-play; Muscle strain; Re-warm-up","Adult; Analysis of Variance; Biomechanical Phenomena; Exercise Test; Humans; Isometric Contraction; Leg Injuries; Male; Muscle Fatigue; Muscle Strength; Muscle, Skeletal; Risk Factors; Running; Soccer; Statistics as Topic; Thigh; adult; article; athlete; exercise; hamstring; human; human experiment; joint function; kinematics; male; muscle fatigue; muscle injury; muscle length; muscle strain; normal human; risk factor; running; simulation; sport; task performance; videorecording; analysis of variance; biomechanics; exercise test; Leg Injuries; muscle fatigue; muscle isometric contraction; muscle strength; physiology; running; skeletal muscle; soccer; statistics; thigh","Agre J.C., Hamstring injuries: Proposed aetiological factors, prevention, and treatment., Sports Med, 2, pp. 21-33, (1985); Bangsbo J., Physiological Demands., (1994); Carlson C., The natural history and management of hamstring injuries., Curr Rev Musculoskelet Med, 1, pp. 120-123, (2008); Edwards A.M., Clark N.A., Thermoregulatory observations in soccer match play: Professional and recreational level applications using an intestinal pill system to measure core temperature., Br J Sports Med, 40, pp. 133-138, (2006); Gabbe B.E., Finch C.F., Bennell K.L., Wajswelner H., Risk factors for hamstring injuries in community level Australian football., Br J Sports Med, 39, pp. 106-110, (2005); Garrett Jr W.E., Muscle strain injuries: Clinical and basic aspects., Med Sci Sports Exerc, 22, pp. 436-443, (1990); Greig M., The influence of soccer-specific fatigue on peak isokinetic torque production of the knee flexors and extensors., Am J Sports Med, 36, pp. 1403-1409, (2008); Hanon C., Thpaut-Mathieu C., Vandewalle H., Determination of muscular fatigue in elite runners., Eur J Appl Physiol, 94, pp. 118-125, (2005); Hoskins W., Pollard H., The management of hamstring injury - Part 1: Issues in diagnosis, Manual Therapy, 10, 2, pp. 96-107, (2005); Krustrup P., Mohr M., Steensberg A., Bencke J., Kjaer M., Bangsbo J., Muscle and blood metabolites during a soccer game: Implications for sprint performance., Med Sci Sports Exerc, 38, pp. 1165-1174, (2006); Lovell R., Knapper B., Small K., Physiological Responses to SAFT90: A New Soccer-specific Match Simulation., (2008); Mohr M., Krustrup P., Nybo L., Nielsen J.J., Bangsbo J., Muscle temperature and sprint performance during soccer matches beneficial effect of re-warm-up at half-time., Scand J Med Sci Sports, 14, pp. 156-162, (2004); Orchard J., Biomechanics of muscle strain injury., New Zeal J Sports Med, 30, pp. 92-98, (2002); Orchard J., Best T.M., Verrall G.M., Return to play following muscle strains., Clin J Sport Med, 15, pp. 436-441, (2005); Pinniger G.J., Steele J.R., Groeller H., Does fatigue induced by repeated dynamic efforts affect hamstring muscle function?, Med Sci Sports Exerc, 32, pp. 647-653, (2000); Portney L.G., Watkins M.P., Power Analysis and Determination of Sample Size., pp. 651-667, (1997); Rahnama N., Reilly T., Lees A., Injury risk associated with playing actions during competitive soccer., Br J Sports Med, 36, pp. 354-359, (2002); Rasch P.J., Burke R.K., (1978); Small K., MacNaughton L., Greig M., Lovell R., The effects of multidirectional soccer-specific fatigue on markers of hamstring injury risk., J Sci Med Sport, (2008); Sprague P., Mann R.V., The effects of muscular fatigue on the kinetics of sprint running., Res Q Exerc Sport, 54, pp. 60-66, (1983); Stanton P., Purdam C., Hamstring injuries in sprinting: The role of eccentric exercise., J Orthop Sports Phys Ther, 1, pp. 3-349, (1989); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer., Sports Med, 35, pp. 501-536, (2005); Tupa V., Gusenov F., Mironenko I., Fatigue influenced changes to sprinting technique., Modern Athlete and Coach, 33, pp. 7-10, (1995); Verrall G.M., Slavotinek J.P., Barnes P.G., Fon G.T., Spriggins A.J., Clinical risk factors for hamstring muscle strain injury: A prospective study with correlation of injury by magnetic resonance imaging., Br J Sports Med, 35, pp. 435-439, (2001); Watson A.W., Sports injuries in footballers related to defects of posture and body mechanics., J Sports Med Phys Fitness, 35, pp. 289-294, (1995); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., The Football Association Medical Research Programme: An audit of injuries in professional football - Analysis of hamstring injuries, British Journal of Sports Medicine, 38, 1, pp. 36-41, (2004)","K. Small; Department of Sport, Health and Exercise Science, University of Hull, Loten Building, Hull HU6 7RX, United Kingdom; email: k.small@hull.ac.uk","","Georg Thieme Verlag","01724622","","IJSMD","19455478","English","Int. J. Sports Med.","Article","Final","","Scopus","2-s2.0-71049142728" "Daneshjoo A.; Mokhtar A.H.; Rahnama N.; Yusof A.","Daneshjoo, Abdolhamid (30267523100); Mokhtar, Abdul Halim (54391501700); Rahnama, Nader (56017323800); Yusof, Ashril (35331324700)","30267523100; 54391501700; 56017323800; 35331324700","The Effects of Injury Preventive Warm-Up Programs on Knee Strength Ratio in Young Male Professional Soccer Players","2012","PLoS ONE","7","12","e50979","","","","76","10.1371/journal.pone.0050979","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870684834&doi=10.1371%2fjournal.pone.0050979&partnerID=40&md5=f16e0e7e7091bc2e5db3332e9018a154","Sports Centre, University of Malaya, Kuala Lumpur, Malaysia; Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia; Faculty of Physical Education and Sport Science, University of Isfahan, Isfahan, Iran","Daneshjoo A., Sports Centre, University of Malaya, Kuala Lumpur, Malaysia; Mokhtar A.H., Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia; Rahnama N., Faculty of Physical Education and Sport Science, University of Isfahan, Isfahan, Iran; Yusof A., Sports Centre, University of Malaya, Kuala Lumpur, Malaysia","Purpose: We aimed to investigate the effect of FIFA 11+ (11+) and HarmoKnee injury preventive warm-up programs on conventional strength ratio (CSR), dynamic control ratio (DCR) and fast/slow speed ratio (FSR) in young male professional soccer players. These ratios are related to the risk of injury to the knee in soccer players. Methods: Thirty-six players were divided into 3 groups; FIFA 11+, HarmoKnee and control (n = 12 per group). These exercises were performed 3 times per week for 2 months (24 sessions). The CSR, DCR and FSR were measured before and after the intervention. Results: After training, the CSR and DCR of knee muscles in both groups were found to be lower than the published normal values (0.61, 0.72, and 0.78 during 60°.s-1, 180°.s-1 and 300°.s-1, respectively). The CSR (60°.s-1) increased by 8% and FSR in the quadriceps of the non-dominant leg by 8% in the 11+. Meanwhile, the DCR in the dominant and non-dominant legs were reduced by 40% and 30% respectively in the 11+. The CSR (60°.s-1) in the non-dominant leg showed significant differences between the 11+, HarmoKnee and control groups (p = 0.02). As for the DCR analysis between groups, there were significant differences in the non-dominant leg between both programs with the control group (p = 0.04). For FSR no significant changes were found between groups. Conclusions: It can be concluded that the 11+ improved CSR and FSR, but the HarmoKnee program did not demonstrate improvement. We suggest adding more training elements to the HarmoKnee program that aimed to enhance hamstring strength (CSR, DCR and FSR). Professional soccer players have higher predisposition of getting knee injuries because hamstring to quadriceps ratio were found to be lower than the average values. It seems that the 11+ have potentials to improve CSR and FSR as well as prevent knee injuries in soccer players. © 2012 Daneshjoo et al.","","Adolescent; Athletes; Athletic Injuries; Biomechanics; Exercise; Humans; Knee; Knee Injuries; Leg; Male; Soccer; Young Adult; adolescent; adult; article; athlete; body equilibrium; comparative effectiveness; concentric muscle contraction; controlled study; conventional strength ratio; dynamic control ratio; exercise; exercise intensity; fast slow speed ratio; human; intervention study; isokinetic exercise; knee function; knee injury; knee instability; male; muscle strength; physical activity, capacity and performance; randomized controlled trial; risk factor; warm up exercise program","Giza E., Mithofer K., Farrell L., Zarins B., Gill T., Injuries in women's professional soccer, British Journal of Sports Medicine, 39, pp. 212-216, (2005); Majewski M., Susanne H., Klaus S., Epidemiology of athletic knee injuries: A 10-year study, The Knee, 13, pp. 184-188, (2006); 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Aagaard P., Simonsen E.B., Andersen J.L., Magnusson S.P., Bojsen-Moller F., Et al., Antagonist muscle co-activation during isokinetic knee extension, Scandinavian Journal of Medicine & Science in Sports, 10, pp. 58-67, (2000); Clark R., Bryant A., Culgan J.P., Hartley B., The effects of eccentric hamstring strength training on dynamic jumping performance and isokinetic strength parameters: a pilot study on the implications for the prevention of hamstring injuries, Physical Therapy in Sport, 6, pp. 67-73, (2005); Iga J., George K., Lees A., Reilly T., Cross-sectional investigation of indices of isokinetic leg strength in youth soccer players and untrained individuals, Scandinavian Journal of Medicine & Science in Sports, 19, pp. 714-719, (2009); Kim D., Hong J., Hamstring to quadriceps strength ratio and noncontact leg injuries: A prospective study during one season, Isokinetics and Exercise Science, 19, pp. 1-6, (2011); Kofotolis N.D., Kellis E., Cross-training effects of a proprioceptive neuromuscular facilitation exercise programme on knee musculature, Physical Therapy in Sport, 8, pp. 109-116, (2007); Rahnama N., Reilly T., Lees A., Graham-Smith P., Muscle fatigue induced by exercise simulating the work rate of competitive soccer, Journal of Sports Science, 21, pp. 933-942, (2003); Wilhite M.R., Cohen E.R., Wilhite S.C., Reliability of concentric and eccentric measurements of quadriceps performance using the KIN -COM dynamometer: the effect of testing order for three different speeds, Journal of Orthopaedic and Sports Physical Therapy, 15, pp. 175-182, (1992); Fousekis K., Tsepis E., Vagenas G., Lower limb strength in professional soccer players: profile, asymmetry, and training age, Journal of Sports Science and Medicine, 9, pp. 364-373, (2010); Masuda K., Kikuhara N., Demura S., Katsuta S., Yamanaka K., Relationship between muscle strength in various isokinetic movements and kick performance among soccer players, Journal of Sports Medicine and Physical Fitness, 45, pp. 44-52, (2005); Zakas A., Bilateral isokinetic peak torque of quadriceps and hamstring muscles in professional soccer players with dominance on one or both two sides, Journal of Sports Medicine and Physical Fitness, 46, pp. 28-35, (2006); Steffen K., Bakka H., Myklebust G., Bahr R., Performance aspects of an injury prevention program: a ten-week intervention in adolescent female football players, Scandinavian Journal of Medicine & Science in Sports, 18, pp. 596-604, (2008); Pallant J., SPSS survival manual: A step by step guide to data analysis using SPSS, pp. 263-285, (2007); Maly T., Zahalka F., Mala L., Isokinetic strength, ipsilateral and bilateral ratio of peak muscle torque in knee flexors and extensors in elite young soccer players, Acta Kinesiologica, 4, pp. 17-23, (2010); Pieter W., Bercades L.T., Kim G., Relative total body fat and skinfold patterning in Filipino national combat sport athletes, Journal of Sports Science and Medicine, pp. 35-41, (2006); Cameron M., Adams R., Maher C., Motor control and strength as predictors of hamstring injury in elite players of Australian football, Physical Therapy in Sport, 4, pp. 159-166, (2003); Houweling T.A.W., Head A., Hamzeh M.A., Validity of isokinetic testing for previous hamstring injury detection in soccer players, Isokinetics and Exercise Science, 17, pp. 213-220, (2009); Machado S., Osorio R.A.L., Silva N., Magini M., Biomechanical analysis of the muscular power of martial arts athletes, Medical and Biological Engineering and Computing, 48, pp. 573-577, (2010); Sasaki K., Ishii N., Shortening velocity of human triceps surae muscle measured with the slack test in vivo, The Journal of Physiology, 567, pp. 1047-1056, (2005); Bottinelli R., Canepari M., Pellegrino M., Reggiani C., Force-velocity properties of human skeletal muscle fibres: myosin heavy chain isoform and temperature dependence, The Journal of Physiology, 495, pp. 573-586, (1996); Mjolsnes R., Arnason A., Raastad T., Bahr R., A 10-week randomized trial comparing eccentric vs. concentric hamstring strength training in well-trained soccer players, Scandinavian Journal of Medicine & Science in Sports, 14, pp. 311-317, (2004); Schmitt B., Tim T., McHugh M., Hamstring injury rehabilitation and prevention of reinjury using lengthened state eccentric training: a new concept, International Journal of Sports Physical Therapy, 7, pp. 333-341, (2012); Tansel R.B., Salci Y., Yildirim A., Kocak S., Korkusuz F., Effects of eccentric hamstring strength training on lower extremity strength of 10-12 year old male basketball players, Isokinetics and Exercise Science, 16, pp. 81-85, (2008); Arnason A., Andersen T., Holme I., Engebretsen L., Bahr R., Prevention of hamstring strains in elite soccer: an intervention study, Scandinavian Journal of Medicine & Science in Sports, 18, pp. 40-48, (2008); Holcomb W.R., Rubley M.D., Lee H.J., Guadagnoli M.A., Effect of hamstring-emphasized resistance training on hamstring: quadriceps strength ratios, The Journal of Strength & Conditioning Research, 21, (2007); Croisier J.L., Ganteaume S., Ferret J., Preseason isokinetic intervention as a preventive strategy for hamstring injury in professional soccer players, British Journal of Sports Medicine, 39, (2005); Hardt J., Benjanuvatra N., Blanksby B., Do footedness and strength asymmetry relate to the dominant stance in swimming track start?, Journal of Sports Sciences, 27, pp. 1221-1227, (2009)","A. Daneshjoo; Sports Centre, University of Malaya, Kuala Lumpur, Malaysia; email: daneshjoo.hamid@gmail.com","","","19326203","","","23226553","English","PLoS ONE","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-84870684834" "Bailes J.E.; Cantu R.C.","Bailes, Julian E. (7005864436); Cantu, Robert C. (16687795500)","7005864436; 16687795500","Head injury in athletes","2001","Neurosurgery","48","1","","26","46","20","133","10.1097/00006123-200101000-00005","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035149633&doi=10.1097%2f00006123-200101000-00005&partnerID=40&md5=e311fa2a63ee0a07dacdc5e88905ae87","Department of Neurosurgery, West Virginia University, School of Medicine, Morgantown, WV, United States; Neurosurgery Service, Service of Sports Medicine, Emerson Hospital, Concord, MA, United States","Bailes J.E., Department of Neurosurgery, West Virginia University, School of Medicine, Morgantown, WV, United States; Cantu R.C., Neurosurgery Service, Service of Sports Medicine, Emerson Hospital, Concord, MA, United States","HEAD INJURIES INCURRED during athletic endeavors have been recorded since games were first held. During the last century, our level of understanding of the types of cerebral insults, their causes, and their treatment has advanced significantly. Because of the extreme popularity of sports in the United States and worldwide, the implications of athletic head injury are enormous. This is especially true considering the current realization that mild traumatic brain injury (MTBI) or concussion represents a major health consideration with more long-ranging effects than previously thought. When considering athletic injuries, people who engage in organized sports, as well as the large number of people who engage in recreational activities, should be considered. There are 200 million international soccer players, a group increasingly recognized to be at risk for MTBI. The participation in contact sports of a large number of the population, especially youth, requires a careful and detailed analysis of injury trends and recommended treatment. There are numerous characteristics of this patient population that make management difficult, especially their implicit request to once again be subjected to potential MTBI by participating in contact sports. Recent research has better defined the epidemiological issues related to sports injuries involving the central nervous system and has also led to classification and management paradigms that help guide decisions regarding athletes' return to play. We currently have methods at our disposal that greatly assist us in managing this group of patients, including improved recognition of the clinical syndromes of MTBI, new testing such as neuropsychological assessment, radiographic evaluations, and a greater appreciation of the pathophysiology of concussive brain injury. The potential for long-term consequences of repetitive MTBI has been recognized, and we no longer consider the ""dinged"" states of athletic concussions to have the benign connotations they had in the past. We review the historical developments in the recognition and care of athletes with head injuries, the current theory of the pathophysiology and biomechanics of these insults, and the recommended management strategy, including return-to-play criteria.","Athletic injury; Concussion; Football; Guidelines; Head trauma; Ice hockey; Soccer","article; biomechanics; brain concussion; brain injury; decision making; disease classification; head injury; history of medicine; human; male; neuropsychology; pathophysiology; priority journal; sport injury","","","","Lippincott Williams and Wilkins","0148396X","","NRSRD","11152359","English","Neurosurgery","Article","Final","","Scopus","2-s2.0-0035149633" "Eils E.; Streyl M.; Linnenbecker S.; Thorwesten L.; Völker K.; Rosenbaum D.","Eils, Eric (6602491840); Streyl, Markus (6504318457); Linnenbecker, Stefan (6506066756); Thorwesten, Lothar (7004603462); Völker, Klaus (8628346600); Rosenbaum, Dieter (7101750997)","6602491840; 6504318457; 6506066756; 7004603462; 8628346600; 7101750997","Characteristic Plantar Pressure Distribution Patterns during Soccer-Specific Movements","2004","American Journal of Sports Medicine","32","1","","140","145","5","129","10.1177/0363546503258932","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0942301429&doi=10.1177%2f0363546503258932&partnerID=40&md5=5dafb7fc145b0d77f17c8c47b4cded5f","Funktionsbereich Bewegungsanalytik, Klin./Poliklin. fur Allg. Orthopad., University Hospital Münster, Münster, Germany; Institute of Sports Medicine, University Hospital Münster, Münster, Germany; Funktionsbereich Bewegungsanalytik, Klin./Poliklin. fur Allg. Orthopad., University Hospital Münster, 48129 Münster, Domagkstr. 3, Germany","Eils E., Funktionsbereich Bewegungsanalytik, Klin./Poliklin. fur Allg. Orthopad., University Hospital Münster, Münster, Germany, Funktionsbereich Bewegungsanalytik, Klin./Poliklin. fur Allg. Orthopad., University Hospital Münster, 48129 Münster, Domagkstr. 3, Germany; Streyl M., Funktionsbereich Bewegungsanalytik, Klin./Poliklin. fur Allg. Orthopad., University Hospital Münster, Münster, Germany; Linnenbecker S., Funktionsbereich Bewegungsanalytik, Klin./Poliklin. fur Allg. Orthopad., University Hospital Münster, Münster, Germany; Thorwesten L., Institute of Sports Medicine, University Hospital Münster, Münster, Germany; Völker K., Institute of Sports Medicine, University Hospital Münster, Münster, Germany; Rosenbaum D., Funktionsbereich Bewegungsanalytik, Klin./Poliklin. fur Allg. Orthopad., University Hospital Münster, Münster, Germany","Purpose: To characterize in-shoe pressure measurements during different soccer-specific maneuvers on two playing surfaces to identify the main loading areas of the foot. Methods: Twenty-one experienced male soccer players participated in the study (25.5 ± 1.8 years, 78.7 ± 5.4 kg, and 182.9 ± 5.7 cm). The Pedar Mobile system was used to collect plantar pressure information inside the soccer shoe. Four soccer-specific movements were performed (normal run, cutting maneuver, sprint, and goal shot) on both a grass and a red cinder surface. Results: Results showed characteristic pressure distribution patterns with specific loading areas of the foot that correspond to the evaluated movements. In addition, loading patterns with higher pressure values than those observed during normal run were found. In cutting, the medial part of the foot; in sprinting, the first and second ray; and in kicking, the lateral part of the foot are predominantly loaded. No global effect of the two surfaces on pressure parameters was found. Conclusion: The results of the present investigation suggest that the high load in soccer in combination with a high repetition may have an important influence in the development of overuse injuries.","Biomechanics; Overuse injuries; Playing surface; Pressure distribution; Soccer","Adult; Analysis of Variance; Athletic Injuries; Biomechanics; Cumulative Trauma Disorders; Foot; Humans; Male; Materials Testing; Pressure; Shoes; Soccer; adult; article; biomechanics; clinical article; foot; foot sole; human; human experiment; male; normal human; pressure; pressure measurement; priority journal; repetitive strain injury; running; shoe; sport; stress fracture","Bortz J., Doring N., Research Methods and Evaluation for Human- and Social Scientists [Forschungsmethoden und Evaluation für Human- und Sozialwissenschaftler]. 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II: Aetiology and prevention, Sports Med, 18, pp. 81-93, (1994); Kavanaugh J.H., Brower T.D., Mann R.V., The Jones fracture revisited, J Bone Joint Surg Am, 60, pp. 776-782, (1978); Kernozek T.W., LaMott E.E., Dancisak M.J., Reliability of an in-shoe pressure measurement system during treadmill walking, Foot Ankle Int, 17, pp. 204-209, (1996); Kernozek T.W., Zimmer K.A., Reliability and running speed effects of in-shoe loading measurements during slow treadmill running, Foot Ankle Int, 21, pp. 749-752, (2000); Knapp T.P., Mandelbaum B.R., Garrett W.E., Why are stress injuries so common in the soccer player?, Clin Sports Med, 17, pp. 835-853, (1998); Korpelainen R., Orava S., Karpakka J., Siira P., Hulkko A., Risk factors for recurrent stress fractures in athletes, Am J Sports Med, 29, pp. 304-310, (2001); Matheson G.O., Clement D.B., McKenzie D.C., Taunton J.E., Lloyd-Smith D.R., MacIntyre J.G., Stress fractures in athletes: A study of 320 cases, Am J Sports Med, 15, pp. 46-58, (1987); McPoil T.G.C., Cornwall M.W., Yamada W., A comparison of two in-shoe plantar pressure measurement systems, Lower Extremity, 2, pp. 95-103, (1995); Milani T., Biomechanische Belastungsanalysen der Fußstruktur bei Absprung- und Landebewegungen im Sport, (1992); Monto R.R., Time to redesign the trusty football boot?, New Scientist, APRIL, (1993); Mueller M.J., Application of plantar pressure assessment in footwear and insert design, J Orthop Sports Phys Ther, 29, pp. 747-755, (1999); Orchard J., Is there a relationship between ground and climatic conditions and injuries in football?, Sports Med, 32, pp. 419-432, (2002); Peterson L., Junge A., Chomiak J., Graf-Baumann T., Dvorak J., Incidence of football injuries and complaints in different age groups and skill-level groups, Am J Sports Med, 28, (2000); Rosenbaum D., Hautmann S., Gold M., Claes L., Effects of walking speed on pressure distribution patterns and hindfoot angular motion, Gait & Posture, 2, pp. 191-197, (1994); Santos D., Carline T., Flynn L., Feeney D., Patterson C., Westland E., Distribution of in-shoe dynamic plantar foot pressures in professional football players, The Foot, 11, pp. 10-14, (2001); Weist R., Rosenbaum D., Changes of plantar pressure and muscle activity patterns under the influence of fatigue under exhausting treadmill running, Emed Scientific Meeting, (2002); Wright R.W., Fischer D.A., Shively R.A., Heidt Jr. R.S., Nuber G.W., Refracture of proximal fifth metatarsal (Jones) fracture after intramedullary screw fixation in athletes, Am J Sports Med, 28, pp. 732-736, (2000)","E. Eils; Funktionsbereich Bewegungsanalytik, Klin./Poliklin. fur Allg. Orthopad., University Hospital Münster, 48129 Münster, Domagkstr. 3, Germany; email: eils@uni-muenster.de","","","03635465","","AJSMD","14754737","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-0942301429" "Pollard C.D.; Davis I.M.; Hamill J.","Pollard, Christine D. (7006671942); Davis, Irene McClay (55439415100); Hamill, Joseph (19734120100)","7006671942; 55439415100; 19734120100","Influence of gender on hip and knee mechanics during a randomly cued cutting maneuver","2004","Clinical Biomechanics","19","10","","1022","1031","9","130","10.1016/j.clinbiomech.2004.07.007","https://www.scopus.com/inward/record.uri?eid=2-s2.0-8644246056&doi=10.1016%2fj.clinbiomech.2004.07.007&partnerID=40&md5=9eeeae75da48c5d4cd7bf2047934097c","Department of Exercise Science, University of Massachusetts, Amherst, MA, USA, United States; Department of Physical Therapy, University of Delaware, Newark, DE, USA, United States; Dept. Biokinesiology and Phys. Ther., University of Southern California, 1540 E. Alcazar St., CHP-155, Los A., United States","Pollard C.D., Department of Exercise Science, University of Massachusetts, Amherst, MA, USA, United States, Dept. Biokinesiology and Phys. Ther., University of Southern California, 1540 E. Alcazar St., CHP-155, Los A., United States; Davis I.M., Department of Physical Therapy, University of Delaware, Newark, DE, USA, United States; Hamill J., Department of Exercise Science, University of Massachusetts, Amherst, MA, USA, United States","Objective. To investigate gender differences in three-dimensional hip and knee joint mechanics in collegiate athletes during a randomly cued cutting maneuver. Design. Three-dimensional kinematics and kinetics were collected on 24 collegiate soccer players (12 females and 12 males) while each performed the cutting maneuver. In order to create a randomly cued condition, subjects were signaled by a lighted target board that directed them to perform one of three tasks. Hip and knee joint mechanics were compared between genders using one-tailed t-tests. Background. Female athletes have an anterior cruciate ligament injury rate that is larger than their male counterparts. Gender differences in hip and knee joint mechanics during a randomly cued cutting maneuver have not been previously reported. Methods. Five randomly cued cutting trials were included in the analysis. Selected peak hip and knee joint angles and moments were measured during the first 40°of knee flexion across the stance phase. Results. Females demonstrated significantly less peak hip abduction than did males. Otherwise, there were no gender differences in selected peak hip and knee joint kinematics and moments. Conclusions. Male and female collegiate soccer players demonstrate similar hip and knee joint mechanics while performing a randomly cued cutting maneuver. Relevance. Because it is known that females incur a greater number of anterior cruciate ligament injuries than males, it is of interest to identify gender differences in lower extremity mechanics when performing sport specific tasks. Understanding of these differences will contribute to the development of prevention training programs. © 2004 Elsevier Ltd. All rights reserved.","ACL injury; Cutting maneuver; Kinematics; Kinetics","Adolescent; Adult; Cues; Data Collection; Female; Hip Joint; Humans; Knee Joint; Male; Movement; Muscle Contraction; Range of Motion, Articular; Sex Factors; Soccer; Torque; Biodiversity; Joints (anatomy); Kinematics; Ligaments; Medical problems; Personnel training; Three dimensional; Athletes; Gender differences; Hip abduction; Injury rates; knee mechanics; adult; anterior cruciate ligament rupture; article; athlete; female; hip; human; joint function; kinematics; kinetics; knee; knee function; knee ligament injury; male; priority journal; sex difference; standing; task performance; Biomechanics","Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. NCAA data and review of literature, Am. J. 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Sports Exerc., 35, pp. 1745-1750, (2003); Griffin L.Y., Agel J., Albohm M.J., Arendt E.A., Dick R.W., Garrett W.E., Garrick J.G., Hewett T.E., Huston L., Ireland M.L., Johnson R.J., Kibler W.B., Lephart S., Lewis J.L., Lindenfeld T.N., Mandelbaum B.R., Marchak P., Teitz C.C., Wojtys E.M., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, J. Am. Acad. Orthop. Surg., 8, pp. 141-150, (2000); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, J. Biomech. Eng., 105, pp. 136-144, (1983); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes. A prospective study, Am. J. Sports Med., 27, pp. 699-706, (1999); Ireland M.L., Anterior cruciate ligament injury in female athletes: Epidemiology, J. Athl. Train., 34, pp. 150-154, (1999); Ireland M.L., Ballantyne B.T., Little K., McClay I.S., A radiographic analysis of the relationship between the size and shape of the intercondylar notch and anterior cruciate ligament injury, Knee Surg. Sports Traumatol. Arthrosc., 9, pp. 200-205, (2001); Malinzak R.A., Colby S.M., Kirkendal D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin. Biomech., 16, pp. 438-445, (2001); Markolf K.L., Bargar W.L., Shoemaker S.C., Amstutz H.C., The role of joint load in knee stability, J. Bone Joint Surg. Am., 63, pp. 570-585, (1981); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J. Orthop. Res., 13, pp. 930-935, (1995); McLean S.G., Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: Potential for injury in women, Med. Sci. Sports Exerc., 31, pp. 959-968, (1999); Rozzi S.L., Lephart S.M., Fu F.H., Effects of muscular fatigue on knee joint laxity and neuromuscular characteristics of male and female athletes, J. Athl. Train., 34, pp. 106-114, (1999)","Department of Exercise Science, University of Massachusetts, Amherst, MA, USA, United States; email: cpollard@usc.edu","","","02680033","","CLBIE","15531052","English","Clin. Biomech.","Article","Final","","Scopus","2-s2.0-8644246056" "Zebis M.K.; Andersen L.L.; Brandt M.; Myklebust G.; Bencke J.; Lauridsen H.B.; Bandholm T.; Thorborg K.; Hölmich P.; Aagaard P.","Zebis, Mette K. (16641697800); Andersen, Lars L. (59071217300); Brandt, Mikkel (56024988900); Myklebust, Grethe (7003895328); Bencke, Jesper (6602699399); Lauridsen, Hanne Bloch (56366514500); Bandholm, Thomas (15047587300); Thorborg, Kristian (36146306900); Hölmich, Per (55961966200); Aagaard, Per (55043777500)","16641697800; 59071217300; 56024988900; 7003895328; 6602699399; 56366514500; 15047587300; 36146306900; 55961966200; 55043777500","Effects of evidence-based prevention training on neuromuscular and biomechanical risk factors for ACL injury in adolescent female athletes: A randomised controlled trial","2016","British Journal of Sports Medicine","50","9","","552","557","5","81","10.1136/bjsports-2015-094776","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942156136&doi=10.1136%2fbjsports-2015-094776&partnerID=40&md5=83575a86329466dbe6484b019ed24a10","Department of Physiotherapy and Occupational Therapy, Faculty of Health and Technology, Metropolitan University College, Sigurdsgade 26, Copenhagen, 2200, Denmark; Gait Analysis Laboratory, Department of Orthopaedic Surgery and Physical Therapy, Copenhagen University Hospital, Amager-Hvidovre, Denmark; National Research Centre for the Working Environment, Copenhagen, Denmark; Human Performance Group, SMI, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark; Oslo Sport Trauma Research Centre, Norwegian School of Sports Sciences, Norway Physical Activity, Oslo, Norway; Clinical Research Centre, Copenhagen University Hospital, Amager-Hvidovre, Denmark; Department of Orthopaedic Surgery and Physical Therapy, Physical Medicine and Rehabilitation Research-Copenhagen (PMR-C), Copenhagen University Hospital, Amager-Hvidovre, Denmark; Sports Orthopaedic Research Centre-Copenhagen (SORC-C), Arthroscopic Centre Amager, Copenhagen University Hospital, Amager-Hvidovre, Denmark; Institute of Sports Sciences and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark","Zebis M.K., Department of Physiotherapy and Occupational Therapy, Faculty of Health and Technology, Metropolitan University College, Sigurdsgade 26, Copenhagen, 2200, Denmark, Gait Analysis Laboratory, Department of Orthopaedic Surgery and Physical Therapy, Copenhagen University Hospital, Amager-Hvidovre, Denmark; Andersen L.L., National Research Centre for the Working Environment, Copenhagen, Denmark, Human Performance Group, SMI, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark; Brandt M., National Research Centre for the Working Environment, Copenhagen, Denmark; Myklebust G., Oslo Sport Trauma Research Centre, Norwegian School of Sports Sciences, Norway Physical Activity, Oslo, Norway; Bencke J., Gait Analysis Laboratory, Department of Orthopaedic Surgery and Physical Therapy, Copenhagen University Hospital, Amager-Hvidovre, Denmark; Lauridsen H.B., Gait Analysis Laboratory, Department of Orthopaedic Surgery and Physical Therapy, Copenhagen University Hospital, Amager-Hvidovre, Denmark; Bandholm T., Clinical Research Centre, Copenhagen University Hospital, Amager-Hvidovre, Denmark, Department of Orthopaedic Surgery and Physical Therapy, Physical Medicine and Rehabilitation Research-Copenhagen (PMR-C), Copenhagen University Hospital, Amager-Hvidovre, Denmark; Thorborg K., Sports Orthopaedic Research Centre-Copenhagen (SORC-C), Arthroscopic Centre Amager, Copenhagen University Hospital, Amager-Hvidovre, Denmark; Hölmich P., Sports Orthopaedic Research Centre-Copenhagen (SORC-C), Arthroscopic Centre Amager, Copenhagen University Hospital, Amager-Hvidovre, Denmark; Aagaard P., Institute of Sports Sciences and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark","Background Adolescent female football and handball players are among the athletes with the highest risk of sustaining anterior cruciate ligament (ACL) injuries. Aim This study evaluated the effects of evidence-based lower extremity injury prevention training on neuromuscular and biomechanical risk factors for noncontact ACL injury. Methods 40 adolescent female football and handball players (15-16 years) were randomly allocated to a control group (CON, n=20) or neuromuscular training group (NMT, n=20). The NMT group performed an injury prevention programme as a warm-up before their usual training 3 times weekly for 12 weeks. The CON group completed their regular warm-up exercise programme before training. Players were tested while performing a side cutting movement at baseline and 12-week followup, using surface electromyography (EMG) and threedimensional movement analysis. We calculated: (1) EMG amplitude from vastus lateralis (VL), semitendinosus (ST) and biceps femoris 10 ms prior to initial contact (IC) normalised to peak EMG amplitude recorded during maximal voluntary isometric contraction and (2) VL-ST EMG preactivity difference during the 10 ms prior to foot contact (primary outcome). We measured maximal knee joint valgus moment and knee valgus angle at IC. Results There was a difference between groups at follow-up in VL-ST preactivity (43% between-group difference; 95% CI 32% to 55%). No between-group differences were observed for kinematic and kinetic variables. Conclusions A 12-week injury prevention programme in addition to training and match play in adolescent females altered the pattern of agonist-antagonist muscle preactivity during side cutting. This may represent a more ACL-protective motor strategy.","","Adolescent; Anterior Cruciate Ligament Injuries; Athletes; Athletic Injuries; Biomechanical Phenomena; Electromyography; Female; Humans; Knee Injuries; Knee Joint; Movement; Muscle Strength; Muscle, Skeletal; Physical Conditioning, Human; Risk Factors; Soccer; Warm-Up Exercise; adolescent; anterior cruciate ligament injury; athlete; Athletic Injuries; biomechanics; controlled study; electromyography; exercise; female; human; knee; Knee Injuries; movement (physiology); muscle strength; physiology; procedures; randomized controlled trial; risk factor; skeletal muscle; soccer; warm up","Lind M., Menhert F., Pedersen A.B., The first results from the Danish ACL reconstruction registry: Epidemiologic and 2 year follow-up results from 5, 818 knee ligament reconstructions, Knee Surg Sports Traumatol Arthrosc, 17, pp. 117-124, (2009); Clausen M.B., Zebis M.K., Moller M., Et al., High injury incidence in adolescent female soccer, Am J Sports Med, 42, pp. 2487-2494, (2014); Moller M., Attermann J., Myklebust G., Et al., Injury risk in Danish youth and senior elite handball using a new SMS text messages approach, Br J Sports Med, 46, pp. 531-537, (2012); Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A 13-year review, Am J Sports Med, 33, pp. 524-530, (2005); Ardern C.L., Taylor N.F., Feller J.A., Et al., Fifty-five per cent return to competitive sport following anterior cruciate ligament reconstruction surgery: An updated systematic review and meta-analysis including aspects of physical functioning and contextual factors, Br J Sports Med, 48, pp. 1543-1552, (2014); Renstrom P.A., Eight clinical conundrums relating to anterior cruciate ligament (ACL) injury in sport: Recent evidence and a personal reflection, Br J Sports Med, 47, pp. 367-372, (2013); Alentorn-Geli E., Myer G.D., Silvers H.J., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 2: A review of prevention programs aimed to modify risk factors and to reduce injury rates, Knee Surg Sports Traumatol Arthrosc, 17, pp. 859-879, (2009); Alentorn-Geli E., Myer G.D., Silvers H.J., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: Mechanisms of injury and underlying risk factors, Knee Surg Sports Traumatol Arthrosc, 17, pp. 705-729, (2009); Myklebust G., Maehlum S., Holm I., Et al., A prospective cohort study of anterior cruciate ligament injuries in elite Norwegian team handball, Scand J Med Sci Sports, 8, pp. 149-153, (1998); Olsen O.E., Myklebust G., Engebretsen L., Et al., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med, 32, pp. 1002-1012, (2004); Zebis M.K., Andersen L.L., Bencke J., Et al., Identification of athletes at future risk of anterior cruciate ligament ruptures by neuromuscular screening, Am J Sports Med, 37, pp. 1967-1973, (2009); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Olsen O.E., Myklebust G., Engebretsen L., Et al., Exercises to prevent lower limb injuries in youth sports: Cluster randomised controlled trial, BMJ, 330, (2005); Hoffmann T.C., Glasziou P.P., Boutron I., Et al., Better reporting of interventions: Template for intervention description and replication (Tidier) checklist and guide, BMJ, 348, (2014); Fuller C.W., Ekstrand J., Junge A., Et al., Consensus statement on injury definitions and data collection procedures in studies of football (soccer) injuries, Clin J Sport Med, 16, pp. 97-106, (2006); Zebis M.K., Bencke J., Andersen L.L., Et al., The effects of neuromuscular training on knee joint motor control during sidecutting in female elite soccer and handball players, Clin J Sport Med, 18, pp. 329-337, (2008); Bencke J., Curtis D., Krogshede C., Et al., Biomechanical evaluation of the side-cutting manoeuvre associated with ACL injury in young female handball players, Knee Surg Sports Traumatol Arthrosc, 21, pp. 1876-1881, (2013); Aagaard P., Simonsen E.B., Andersen J.L., Et al., Antagonist muscle coactivation during isokinetic knee extension, Scand J Med Sci Sports, 10, pp. 58-67, (2000); Aagaard P., Simonsen E.B., Andersen J.L., Et al., Neural inhibition during maximal eccentric and concentric quadriceps contraction: Effects of resistance training, J Appl Physiol, 89, pp. 2249-2257, (2000); Aagaard P., Simonsen E.B., Andersen J.L., Et al., Increased rate of force development and neural drive of human skeletal muscle following resistance training, J Appl Physiol, 93, pp. 1318-1326, (2002); Suetta C., Aagaard P., Rosted A., Et al., Training-induced changes in muscle CSA, muscle strength, EMG, and rate of force development in elderly subjects after long-term unilateral disuse, J Appl Physiol, 97, pp. 1954-1961, (2004); Askling C., Saartok T., Thorstensson A., Type of acute hamstring strain affects flexibility, strength, and time to return to pre-injury level, Br J Sports Med, 40, pp. 40-44, (2006); Thorborg K., Bandholm T., Holmich P., Hip-and knee-strength assessments using a hand-held dynamometer with external belt-fixation are inter-tester reliable, Knee Surg Sports Traumatol Arthrosc, 21, pp. 550-555, (2013); Pappas E., Nightingale E.J., Simic M., Et al., Do exercises used in injury prevention programmes modify cutting task biomechanics? A systematic review with meta-analysis, Br J Sports Med, 49, pp. 673-680, (2015); Wilderman D.R., Ross S.E., Padua D.A., Thigh muscle activity, knee motion, and impact force during side-step pivoting in agility-trained female basketball players, J Athl Train, 44, pp. 14-25, (2009); Myer G.D., Ford K.R., McLean S.G., Et al., The effects of plyometric versus dynamic stabilization and balance training on lower extremity biomechanics, Am J Sports Med, 34, pp. 445-455, (2006); Cochrane J.L., Lloyd D.G., Besier T.F., Et al., Training affects knee kinematics and kinetics in cutting maneuvers in sport, Med Sci Sports Exerc, 42, pp. 1535-1544, (2010); Myer G.D., Ford K.R., Palumbo J.P., Et al., Neuromuscular training improves performance and lower-extremity biomechanics in female athletes, J Strength Cond Res, 19, pp. 51-60, (2005)","M.K. Zebis; Department of Physiotherapy and Occupational Therapy, Faculty of Health and Technology, Metropolitan University College, Copenhagen, Sigurdsgade 26, 2200, Denmark; email: mettezebis@hotmail.com","","BMJ Publishing Group","03063674","","BJSMD","26400955","English","Br. J. Sports Med.","Article","Final","","Scopus","2-s2.0-84942156136" "Hewett T.E.; Lindenfeld T.N.; Riccobene J.V.; Noyes F.R.","Hewett, Timothy E. (7005201943); Lindenfeld, Thomas N. (6604054847); Riccobene, Jennifer V. (6504709781); Noyes, Frank R. (7006645427)","7005201943; 6604054847; 6504709781; 7006645427","The effect of neuromuscular training on the incidence of knee injury in female athletes. A prospective study","1999","American Journal of Sports Medicine","27","6","","699","706","7","1210","10.1177/03635465990270060301","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0032723610&doi=10.1177%2f03635465990270060301&partnerID=40&md5=fd451fbc3c89f9644d7c781edf733369","Cincinnati Sportsmedicine Res. E., Deaconess Hospital, Cincinnati, OH, United States; Cincinnati Sportsmedicine Res. E., Cincinnati, OH 45219, 311 Straight Street, United States","Hewett T.E., Cincinnati Sportsmedicine Res. E., Deaconess Hospital, Cincinnati, OH, United States, Cincinnati Sportsmedicine Res. E., Cincinnati, OH 45219, 311 Straight Street, United States; Lindenfeld T.N., Cincinnati Sportsmedicine Res. E., Deaconess Hospital, Cincinnati, OH, United States; Riccobene J.V., Cincinnati Sportsmedicine Res. E., Deaconess Hospital, Cincinnati, OH, United States; Noyes F.R., Cincinnati Sportsmedicine Res. E., Deaconess Hospital, Cincinnati, OH, United States","To prospectively evaluate the effect of neuromuscular training on the incidence of knee injury in female athletes, we monitored two groups of female athletes, one trained before sports participation and the other not trained, and a group of untrained male athletes throughout the high school soccer, volleyball, and basketball seasons. Weekly reports included the number of practice and competition exposures and mechanism of injury. There were 14 serious knee injuries in the 1263 athletes tracked through the study. Ten of 463 untrained female athletes sustained serious knee injuries (8 noncontact), 2 of 366 trained female athletes sustained serious knee injuries (0 noncontact), and 2 of 434 male athletes sustained serious knee injuries (1 noncontact). The knee injury incidence per 1000 athlete-exposures was 0.43 in untrained female athletes, 0.12 in trained female athletes, and 0.09 in male athletes (P = 0.02, chi-square analysis). Untrained female athletes had a 3.6 times higher incidence of knee injury than trained female athletes (P = 0.05) and 4.8 times higher than male athletes (P = 0.03). The incidence of knee injury in trained female athletes was not significantly different from that in untrained male athletes (P = 0.86). The difference in the incidence of noncontact injuries between the female groups was also significant (P = 0.01). This prospective study demonstrated a decreased incidence of knee injury in female athletes after a specific plyometric training program.","","article; athlete; biomechanics; controlled study; female; gastrocnemius muscle; hamstring; human; knee function; knee injury; male; muscle strength; neuromuscular function; priority journal; quadriceps femoris muscle; training","Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. NCAA data and review of literature, Am J Sports Med, 23, pp. 694-701, (1995); Baratta R., Solomonow M., Zhou B.H., Et al., Muscular coactivation. The role of the antagonist musculature in maintaining knee stability, Am J Sports Med, 16, pp. 113-122, (1988); Caraffa A., Cerulli G., Projetti M., Et al., Prevention of anterior cruciate ligament injuries in soccer. A prospective controlled study of proprioceptive training, Knee Surg Sports Traumatol Arthrosc, 4, 1, pp. 19-21, (1996); Chandy T.A., Grana W.A., Secondary school athletic injury in boys and girls: A three-year comparison, Physician Sportsmed, 13, 3, pp. 106-111, (1985); Davies G., Compendium of Isokinetics in Clinical Usage, (1984); De Cree C., Ball P., Seidlitz B., Et al., Responses of catecholestrogen metabolism to acute and graded exercise in normal menstruating women before and after training, J Clin Endocrinol Metab, 82, pp. 3342-3348, (1997); Dufek J.S., Bates B.T., Biomechanical factors associated with injury during landing in jumping sports, Sports Med, 12, pp. 326-337, (1991); Dunnam L.O., Hunter G.R., Williams B.P., Et al., Comprehensive evaluation of the University of Alabama at Birmingham women's volleyball training program, Nat Strength Conditioning Assoc J, 10, 1, pp. 50-52, (1988); Emerson R.J., Basketball knee injuries and the anterior cruciate ligament, Clin Sports Med, 12, pp. 317-328, (1993); Ferretti A., Papandrea P., Conteduca F., Et al., Knee ligament injuries in volleyball players, Am J Sports Med, 20, pp. 203-207, (1992); Freedman K.B., Glasgow M.T., Glasgow S.G., Et al., Anterior cruciate ligament injury and reconstruction among university students, Clin Orthop, 356, pp. 208-212, (1998); Gerberich S.G., Luhmann S., Finke C., Et al., Analysis of severe injuries associated with volleyball activities, Physician Sportsmed, 15, 8, pp. 76-79, (1987); Gray J., Taunton J.E., McKenzie D.C., Et al., A survey of injuries to the anterior cruciate ligament of the knee in female basketball players, Int J Sports Med, 6, pp. 314-316, (1985); Haycock C.E., Gillette J.V., Susceptibility of women athletes to injury: Myth vs. reality, JAMA, 236, pp. 163-165, (1976); Hewett T.E., Stroupe A.L., Nance T.A., Et al., Plyometric training in female athletes. Decreased impact forces and increased hamstring torques, Am J Sports Med, 24, pp. 765-773, (1996); Huston L.J., Wojtys E.M., Neuromuscular performance characteristics in elite female athletes, Am J Sports Med, 24, pp. 427-436, (1996); Hutchinson M.R., Ireland M.L., Knee injuries in female athletes, Sports Med, 19, pp. 288-302, (1995); Lindenfeld T.N., Schmitt D.J., Hendy M.P., Et al., Incidence of injury in indoor soccer, Am J Sports Med, 22, pp. 364-371, (1994); Malone T.R., Hardaker W.T., Garrett W.E., Et al., Relationship of gender to anterior cruciate ligament injuries in intercollegiate basketball players, J Southern Orthop Assoc, 2, 1, pp. 36-39, (1993); Markolf K.L., Graff-Radford A., Amstutz H.C., In vivo knee stability: A quantitative assessment using an instrumented clinical testing apparatus, J Bone Joint Surg, 60 A, pp. 664-674, (1978); Marsit J.L., Kraemer W.J., Beginning off-season workout for high school volleyball, Nat Strength Conditioning Assoc J, 14, 3, pp. 62-66, (1992); McGown C.M., Conlee R.K., Sucec A.A., Et al., Gold medal volleyball: The training program and physiological profile of the 1984 Olympic champions, Res Q Exerc Sport, 61, 2, pp. 196-200, (1990); More R.C., Karras B.T., Neiman R., Et al., Hamstrings - An anterior cruciate ligament protagonist: An in vitro study, Am J Sports Med, 21, pp. 231-237, (1993); Noyes F.R., Mooar P.A., Matthews D.S., Et al., The symptomatic anterior cruciate-deficient knee. Part I: The long-term functional disability in athletically active individuals, J Bone Joint Surg, 65 A, pp. 154-162, (1983); Noyes F.R., Schipplein O.D., Andriacchi T.P., Et al., The anterior cruciate ligament-deficient knee with varus alignment. An analysis of gait adaptations and dynamic joint loadings, Am J Sports Med, 20, pp. 707-716, (1992); Shelbourne K.D., Davis T.J., Klootwyk T.E., The relationship between intercondylar notch width of the femur and the incidence of anterior cruciate ligament tears. A prospective study, Am J Sports Med, 26, pp. 402-408, (1998); Skelly W.A., DeVita P., Compressive and shear forces on the tibia and knee during landing, Proceedings of the 6th Biennial Conference of the Canadian Society for Biomechanics, pp. 59-60, (1990); Tibone J.E., Antich T.J., Fanton G.S., Et al., Functional analysis of anterior cruciate ligament instability, Am J Sports Med, 14, pp. 276-284, (1986); Weesner C.L., Albohm M.J., Ritter M.A., A comparison of anterior and posterior cruciate ligament laxity between female and male basketball players, Physician Sportsmed, 14, 5, pp. 149-154, (1986); Whiteside P.A., Men's and women's injuries in comparable sports, Physician Sportsmed, 8, 3, pp. 130-140, (1980); Wojtys E.M., Huston L.J., Lindenfeld T.N., Et al., Association between the menstrual cycle and anterior cruciate ligament injuries in female athletes, Am J Sports Med, 26, pp. 614-619, (1998); Zelisko J.A., Noble H.B., Porter M., A comparison of men's and women's professional basketball injuries, Am J Sports Med, 10, pp. 297-299, (1982)","","","American Orthopaedic Society for Sports Medicine","03635465","","AJSMD","10569353","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-0032723610" "Yu B.; McClure S.B.; Onate J.A.; Guskiewicz K.M.; Kirkendall D.T.; Garrett W.E.","Yu, Bing (35301366400); McClure, Scott B. (8696874900); Onate, James A. (7004831141); Guskiewicz, Kevin M. (7004697944); Kirkendall, Donald T. (7003555207); Garrett, William E. (7102162248)","35301366400; 8696874900; 7004831141; 7004697944; 7003555207; 7102162248","Age and gender effects on lower extremity kinematics of youth soccer players in a stop-jump task","2005","American Journal of Sports Medicine","33","9","","1356","1364","8","106","10.1177/0363546504273049","https://www.scopus.com/inward/record.uri?eid=2-s2.0-23944492953&doi=10.1177%2f0363546504273049&partnerID=40&md5=754ac94dbb8d725c900bcf7a7638ae15","University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Old Dominion University, Norfolk, VA, United States; Center for Human Movement Science, Division of Physical Therapy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7135, United States","Yu B., University of North Carolina at Chapel Hill, Chapel Hill, NC, United States, Center for Human Movement Science, Division of Physical Therapy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7135, United States; McClure S.B., University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Onate J.A., Old Dominion University, Norfolk, VA, United States; Guskiewicz K.M., University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Kirkendall D.T., University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Garrett W.E., University of North Carolina at Chapel Hill, Chapel Hill, NC, United States","Background: Gender differences in lower extremity motion patterns were previously identified as a possible risk factor for non-contact anterior cruciate ligament injuries in sports. Hypothesis: Gender differences in lower extremity kinematics in the stop-jump task are functions of age for youth soccer players between 11 and 16 years of age. Study Design: Descriptive laboratory study. Methods: Three-dimensional videographic data were collected for 30 male and 30 female adolescent soccer players between 11 and 16 years of age performing a stop-jump task. The age effects on hip and knee joint angular motions were compared between genders using multiple regression analyses with dummy variables. Results: Gender and age have significant interaction effects on standing height (P = .00), body mass (P = .00), knee flexion angle at initial foot contact with the ground (P = .00), maximum knee flexion angle (P = .00), knee valgus-varus angle (P = .00), knee valgus-varus motion (P = .00), and hip flexion angle at initial foot contact with the ground (P = .00). Conclusion: Youth female recreational soccer players have decreased knee and hip flexion angles at initial ground contact and decreased knee and hip flexion motions during the landing of the stop-jump task compared to those of their male counterparts. These gender differences in knee and hip flexion motion patterns of youth recreational soccer players occur after 12 years of age and increase with age before 16 years. Clinical Relevance: The results of this study provide significant information for research on the prevention of noncontact anterior cruciate ligament injuries. © 2005 American Orthopaedic Society for Sports Medicine.","Adolescents; Anterior cruciate ligament (ACL); Biomechanics; Injury prevention; Landing","Adolescent; Age Factors; Anterior Cruciate Ligament; Biomechanics; Child; Female; Hip Joint; Humans; Knee Injuries; Knee Joint; Male; Sex Factors; Soccer; adolescent; article; biomechanics; body height; body mass; female; gender; hip; human; kinematics; knee; knee function; laboratory diagnosis; leg movement; major clinical study; male; motor performance; priority journal; school child; sport injury; statistical significance; task performance; three dimensional imaging; videorecording","Andrews M., Noyes F.R., Barber-Westin S., Anterior cruciate ligament allograft reconstruction in the skeletally immature athlete, Am J Sports Med, 22, pp. 48-54, (1994); Angel K.R., Hall D.J., Anterior cruciate ligament injury in children and adolescents, Arthroscopy, 5, pp. 197-200, (1989); 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Yu; Center for Human Movement Science, Division of Physical Therapy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7135, United States; email: byu@med.unc.edu","","","03635465","","AJSMD","16002495","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-23944492953" "Schuermans J.; Van Tiggelen D.; Palmans T.; Danneels L.; Witvrouw E.","Schuermans, Joke (56422119600); Van Tiggelen, Damien (6507111917); Palmans, Tanneke (36154754300); Danneels, Lieven (6701796344); Witvrouw, Erik (7004118065)","56422119600; 6507111917; 36154754300; 6701796344; 7004118065","Deviating running kinematics and hamstring injury susceptibility in male soccer players: Cause or consequence?","2017","Gait and Posture","57","","","270","277","7","71","10.1016/j.gaitpost.2017.06.268","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85021661644&doi=10.1016%2fj.gaitpost.2017.06.268&partnerID=40&md5=349d2b6ef88b83616d234c28e37e9b57","Department of Rehabilitation Sciences and Physiotherapy Ghent, Ghent University, Ghent, Belgium","Schuermans J., Department of Rehabilitation Sciences and Physiotherapy Ghent, Ghent University, Ghent, Belgium; Van Tiggelen D., Department of Rehabilitation Sciences and Physiotherapy Ghent, Ghent University, Ghent, Belgium; Palmans T., Department of Rehabilitation Sciences and Physiotherapy Ghent, Ghent University, Ghent, Belgium; Danneels L., Department of Rehabilitation Sciences and Physiotherapy Ghent, Ghent University, Ghent, Belgium; Witvrouw E., Department of Rehabilitation Sciences and Physiotherapy Ghent, Ghent University, Ghent, Belgium","Background Although the vast majority of hamstring injuries in male soccer are sustained during high speed running, the association between sprinting kinematics and hamstring injury vulnerability has never been investigated prospectively in a cohort at risk. Purpose This study aimed to objectify the importance of lower limb and trunk kinematics during full sprint in hamstring injury susceptibility. Study design Cohort study; level of evidence, 2. Methods At the end of the 2013 soccer season, three-dimensional kinematic data of the lower limb and trunk were collected during sprinting in a cohort consisting of 30 soccer players with a recent history of hamstring injury and 30 matched controls. Subsequently, a 1.5 season follow up was conducted for (re)injury registry. Ultimately, joint and segment motion patterns were submitted to retro- and prospective statistical curve analyses for injury risk prediction. Results Statistical analysis revealed that index injury occurrence was associated with higher levels of anterior pelvic tilting and thoracic side bending throughout the airborne (swing) phases of sprinting, whereas no kinematic differences during running were found when comparing players with a recent hamstring injury history with their matched controls. Conclusion Deficient core stability, enabling excessive pelvis and trunk motion during swing, probably increases the primary injury risk. Although sprinting encompasses a relative risk of hamstring muscle failure in every athlete, running coordination demonstrated to be essential in hamstring injury prevention. © 2017 Elsevier B.V.","3D kinematics; Acceleration; Aetiology; Hamstring injury; Soccer; Sprinting coordination","Adolescent; Adult; Biomechanical Phenomena; Case-Control Studies; Follow-Up Studies; Hamstring Muscles; Humans; Leg Injuries; Lower Extremity; Male; Prospective Studies; Risk Factors; Running; Soccer; Torso; Young Adult; acceleration; adult; Article; clinical article; cohort analysis; controlled study; disease predisposition; follow up; hamstring muscle; human; kinematics; male; motion; muscle injury; occupational accident; pelvis; priority journal; running; soccer player; adolescent; biomechanics; case control study; hamstring muscle; injuries; leg injury; lower limb; pathophysiology; physiology; prospective study; risk factor; running; soccer; trunk; young adult","Mendiguchia J., Alentorn-Geli E., Brughelli M., Hamstring strain injuries: are we heading in the right direction?, Br. 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Train., 48, 4, (2013); Silder A., Sherry M.A., Sanfilippo J., Tuite M.J.T., Hetzel S.J., Heiderscheit B.C., Clinical and morphological changes following 2 rehabilitation programs for acute hamstring strain injuries: a randomized clinical trial, J. Orthopaedic Sports Phys. Ther., 43, 5, pp. 284-299, (2013); Cameron M.L., Adams R.D., Maher C.G., Misson D., Effect of the Hamsprint Drills training programme on lower limb neuromuscular control in Australian football players, J. Sci. Med. Sport, 12, pp. 24-30, (2009); Franz J.R., Paylo K.W., Dicharry J., Riley P.O., Kerrigan D.C., Changes in the coordination of the hip and pelvis kinematics with mode of locomotion, Gait Posture, 29, pp. 494-498, (2009); Herrington L., The effect of pelvic position on popliteal angle achieved during 90:90 Hamstring-Length test, J. Sports Rehabil., 22, 4, pp. 254-256, (2013); Schuermans J., Danneels L., Van Tiggelen D., Palmans T., Witvrouw E., Proximal neuormuscular control protects against hamstring injuries in male soccer players: a prospective study with electromyography time-series analysis during maximal sprinting, Am. J. Sports Med., 45, 6, pp. 1315-1325, (2017)","J. Schuermans; Department of Rehabilitation Sciences and Physiotherapy Ghent, Ghent University, Ghent, Belgium; email: Joke.schuermans@ugent.be","","Elsevier B.V.","09666362","","GAPOF","28683419","English","Gait Posture","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85021661644" "Chelly M.S.; Fathloun M.; Cherif N.; Amar M.B.; Tabka Z.; Van Praagh E.","Chelly, Mohamed Souhaiel (12779622800); Fathloun, Mourad (35740151200); Cherif, Najet (35740026500); Amar, Mohamed Ben (35739752800); Tabka, Zouhair (6604088425); Van Praagh, Emmanuel (7003816356)","12779622800; 35740151200; 35740026500; 35739752800; 6604088425; 7003816356","Effects of a back squat training program on leg power,jump, and sprint performances in junior soccer players","2009","Journal of Strength and Conditioning Research","23","8","","2241","2249","8","239","10.1519/JSC.0b013e3181b86c40","https://www.scopus.com/inward/record.uri?eid=2-s2.0-70449368469&doi=10.1519%2fJSC.0b013e3181b86c40&partnerID=40&md5=62334e9585d2b4faeceea71d9552fcb4","Laboratory of Physiology, Faculty of Medicine Ibn-El-jazzar, Sousse, Tunisia; High Institute of Sport, Physical Education, Ksar Said, Tunis, Tunisia; High Institute of Spor, Physical Education, El Kef, Tunisia; Laboratory of Exercise Biology, Blaise Pascal University, Clermont-Ferrand, France","Chelly M.S., Laboratory of Physiology, Faculty of Medicine Ibn-El-jazzar, Sousse, Tunisia, High Institute of Sport, Physical Education, Ksar Said, Tunis, Tunisia; Fathloun M., High Institute of Spor, Physical Education, El Kef, Tunisia; Cherif N., Laboratory of Physiology, Faculty of Medicine Ibn-El-jazzar, Sousse, Tunisia; Amar M.B., High Institute of Sport, Physical Education, Ksar Said, Tunis, Tunisia; Tabka Z., Laboratory of Physiology, Faculty of Medicine Ibn-El-jazzar, Sousse, Tunisia; Van Praagh E., Laboratory of Exercise Biology, Blaise Pascal University, Clermont-Ferrand, France","The aim of the present study was to investigate the effects of voluntary maximal leg strength training on peak power output (Wpeak), vertical jump performance, and field performances in junior soccer players. Twenty-two male soccer players participated in this investigation and were divided into 2 groups: A resistance training group (RTG; age 17 ± 0.3 years) and a control group (CG; age 17 ± 0.5 years). Before and after the training sessions (twice a week for 2 months), Wpeak was determined by means of a cycling force-velocity test. Squat jump (SJ), countermovement jump (CMJ), and 5-jump test (5-JT) performances were assessed. Kinematics analyses were made using a video camera during a 40-m sprint running test and the following running velocities were calculated: The first step after the start (V first step), the first 5 m (Vfirst 5 meters), and between the 35 m and 40 m (Vmax). Back half squat exercises were performed to determine 1-repetition maximum (1-RM). Leg and thigh muscle volume and mean thigh cross-sectional area (CSA) were assessed by anthropometry. The resistance training group showed improvement in Wpeak (p < 0.05), jump performances (SJ, p < 0.05 and 5-JT, p < 0.001), 1-RM (p < 0.001) and all sprint running calculated velocities (p < 0.05 for both Vfirst step and V first 5 meters), P < 0.01 for Vmax). Both typical force-velocity relationships and mechanical parabolic curves between power and velocity increased after the strength training program. Leg and thigh muscle volume and CSA of RTG remained unchanged after strength training. Back half squat exercises, including adapted heavy loads and only 2 training sessions per week, improved athletic performance in junior soccer players. These specific dynamic constant external resistance exercises are highly recommended as part of an annual training program for junior soccer players.© 2009 National Strength and Conditioning Association.","Muscle; Peak power; Running velocity; Strength training","Adolescent; Analysis of Variance; Anthropometry; Biomechanics; Exercise Test; Humans; Leg; Male; Muscle Strength; Muscle, Skeletal; Resistance Training; Running; Soccer; Treatment Outcome; Video Recording; adolescent; analysis of variance; anthropometry; article; biomechanics; exercise test; human; leg; male; methodology; muscle strength; physiology; resistance training; running; skeletal muscle; sport; treatment outcome; videorecording","Almasbakk B., Coordination H.J., The determinant of velocity specificity?, J Appl Physiol, 81, pp. 2046-2052, (1996); Arsac L.M., Belli A., Lacour J.R., Muscle function during brief maximal exercise: Accurate measurements on a friction-loaded cycle ergometer, Eur J Appl Physiol Occup Physiol, 74, pp. 100-106, (1996); Bangsbo J., The physiology of soccer: With special reference to intense intermittent exercise, Acta Physiol Scand, 15, SUPPL., pp. 1-156, (1994); Bangsbo J., Norregaard L., Thorso F., Activity profile of competition soccer, Can J Sport Sci, 16, pp. 110-116, (1991); Behm D.G., Sale D.G., Velocity specificity of resistance training, Sports Med, 15, pp. 374-388, (1993); Cjr B., Sale D.G., Strength development and trainability during childhood, Pediatric Anaerobic Performance, pp. 193-224, (1998); Bosco C., Luhtanen P., Komi P.V., A simple method for measurement of mechanical power in jumping, Eur J Appl Physiol Occup Physiol, 50, pp. 273-282, (1983); Bouhlel E., Bouhlel H., Chelly M.S., Tabka Z., Relationship between maximal anaerobic power measured by force-velocity test and performance in counter movement jump and the 5-jump test in moderately trained boys, Sci Sport, 21, pp. 1-7, (2006); Chelly M.S., Chamari K., Verney J., Denis C., Comparison of muscle mechanical and histochemical properties between young and elderly subjects, Int J Sports Med, 27, pp. 885-893, (2006); Chelly S.M., Denis C., Leg power and hopping stiffness: Relationship with sprint runningperformance, Med Sci Sports Exerc, 33, pp. 326-333, (2001); Cometti G., Maffiuletti N.A., Pousson M., Chatard J.C., Mafulli N., Isokinetic strength and anaerobic power of elite, subelite and amateur French soccer players, Int J Sports Med, 22, pp. 45-51, (2001); Dore E., Bedu M., Franca N.M., Diallo O., Duche P., Van Praagh E., Testing peak cycling performance: Effects ofbraking force during growth, Med Sci Sports Exerc, 32, pp. 493-498, (2000); Duchateau J., Hainaut K., Isometric or dynamic training: Differential effects on mechanical properties of a human muscle, J Appl Physiol, 56, pp. 296-301, (1984); Fleck S.J., Kraemer W.J., Designing Resistance Training Programs, (1997); Fukunaga T., Funato K., Ikegawa S., The effects of resistance training on muscle area and strength in prepubescent age, Ann Physiol Anthropol, 11, pp. 357-364, (1992); Jones P.R., Pearson J., Anthropometric determination of leg fat and muscle plus bone volumes in young male and female adults, J Physiol, 204, (1969); Kotzamanidis C., Chatzopoulos D., Michailidis C., Papaiakovou G., Patikas D., The effect ofa combined high-intensity strength and speed training program on the running and jumping ability ofsoccer players, J Strength Cond Res, 19, pp. 369-375, (2005); Kraemer R.R., Kilgore J.L., Kraemer G.R., Castracane V.D., Growth hormone, IGF-I, and testosterone responses to resistive exercise, Med Sci Sports Exerc, 24, pp. 1346-1352, (1992); Lehnhard R.A., Lehnhard H., Young R., Butterfield S.A., Monitoring injuries on a college soccer team: The effect of strength training, J Strength Cond Res, 10, pp. 115-119, (1996); Malisoux L., Francaux M., Nielens H., Theisen D., Stretch-shortening cycle exercises: An effective training paradigm to enhance power output of human single muscle fibers, J Appl Physiol, 100, pp. 771-779, (2006); McCartney N., Heigenhauser G.J., Jones N.L., Power output and fatigue ofhuman muscle in maximal cycling exercise, J ApplPhysiol, 55, pp. 218-224, (1983); Mero A., Power and speed training during childhood, Pediatric Anaerobic Performance, pp. 241-267, (1998); Mero A., Komi P.V., Gregor R.J., Biomechanics of sprint running. A review, Sports Med, 13, pp. 376-392, (1992); Mero A., Vuorimaa T., Training H.K., Children and Adolescents, (1990); Mersch F., Stoboy H., Strength training and muscle hypertrophy in children, Children and Exercise XIII, pp. 165-182, (1989); Ozmun J.C., Mikesky A.E., Surburg P.R., Neuromuscular adaptations following prepubescent strength training, Med Sci Sports Exerc, 26, pp. 510-514, (1994); Paavolainen L., Hakkinen L., Hamalainen I., Nummela A., Rusko H., Explosive-strength training improves 5-km running time by improving running economy and muscle power, J Appl Physiol, 86, pp. 1527-1533, (1999); Ramsay J.A., Blimkie C.J., Smith K., Garner S., MacDougall J.D., Sale D.G., Strength training effects in prepubescent boys, Med Sci Sports Exerc, 22, pp. 605-614, (1990); Rankin G., Stokes M., Reliability of assessment tools in rehabilitation: An illustration of appropriate statistical analyses, Clin Rehabil, 12, pp. 187-199, (1998); Sale D.G., Neuronal adaptations in strength training, Strength and Power in Sport, pp. 249-295, (1992); Sargeant A.J., Hoinville E., Young A., Maximum leg force and power output during short-term dynamic exercise, J Appl Physiol, 51, pp. 1175-1182, (1981); Schabort E.J., Hopkins W.G., Hawley J.A., Reproducibility of self- paced treadmill performance of trained endurance runners, Int J Sports Med, 19, pp. 48-51, (1998); Schmidtbleicher D., Training for power events, Strength and Power in Sport, pp. 381-395, (1992); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer: An update, Sports Med, 35, pp. 501-536, (2005); Tanner J.M., Growth at Adolescence, (1962); Tesch P.A., Larsson L., Muscle hypertrophy in bodybuilders, Eur J Appl Physiol Occup Physiol, 49, pp. 301-306, (1982); Toumi H., Best T.M., Martin A., Poumarat G., Muscle plasticity after weight and combined (weight + jump) training, Med Sci Sports Exerc, 36, pp. 1580-1588, (2004); Van Praagh E., Dore E., Short-term muscle power during growth and maturation, Sports Med, 32, pp. 701-728, (2002); Vandewalle H., Peres G., Heller J., Panel J., Monod H., Forcevelocity relationship and maximal power on a cycle ergometer. Correlation with the height of a vertical jump, Eur J Appl Physiol Occup Physiol, 56, pp. 650-656, (1987); Vincent W.J., Statistics in Kinesiology; Wilson G.J., Newton R.U., Murphy A.J., Humphries B.J., The optimal training load for the development of dynamic athletic performance, Med Sci Sports Exerc, 25, pp. 1279-1286, (1993); Wisloff U., Helgerud J., Hoff J., Strength and endurance ofelite soccer players, Med Sci Sports Exerc, 30, pp. 462-467, (1998)","M. S. Chelly; Laboratory of Physiology, Faculty of Medicine Ibn-El-jazzar, Sousse, Tunisia; email: csouhaiel@yahoo.fr","","","10648011","","","19826302","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-70449368469" "Barros R.M.L.; Misuta M.S.; Menezes R.P.; Figueroa P.J.; Moura F.A.; Cunha S.A.; Anido R.; Leite N.J.","Barros, Ricardo M. L. (7006625893); Misuta, Milton S. (16417179800); Menezes, Rafael P. (16417183300); Figueroa, Pascual J. (7003967576); Moura, Felipe A. (16417087000); Cunha, Sergio A. (16416879600); Anido, Ricardo (6506547717); Leite, Neucimar J. (7004518637)","7006625893; 16417179800; 16417183300; 7003967576; 16417087000; 16416879600; 6506547717; 7004518637","Analysis of the distances covered by first division Brazilian soccer players obtained with an automatic tracking method","2007","Journal of Sports Science and Medicine","6","2","","233","242","9","260","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-34249809133&partnerID=40&md5=531f73f5bcdfb7b63314f63141c960bd","Laboratory of Instrumentation for Biomechanics, College of Physical Education, Campinas State University, Campinas, Brazil; Institute of Computing, Campinas State University, Campinas, Brazil; Laboratory of Biomechanical Analysis, Department of Physical Education, Paulista State University, Rio Claro, Brazil; Departamento de Educação Física, Universidade Estadual Paulista, Rio Claro, Brazil; Universidade Estadual de Campinas, Faculdade de Educação, Laboratório de Instrumentação para Biomecânica, CEP 13083-851, Campinas, SP, CX 6134, Brazil","Barros R.M.L., Laboratory of Instrumentation for Biomechanics, College of Physical Education, Campinas State University, Campinas, Brazil, Universidade Estadual de Campinas, Faculdade de Educação, Laboratório de Instrumentação para Biomecânica, CEP 13083-851, Campinas, SP, CX 6134, Brazil; Misuta M.S., Laboratory of Instrumentation for Biomechanics, College of Physical Education, Campinas State University, Campinas, Brazil; Menezes R.P., Laboratory of Instrumentation for Biomechanics, College of Physical Education, Campinas State University, Campinas, Brazil; Figueroa P.J., Institute of Computing, Campinas State University, Campinas, Brazil; Moura F.A., Laboratory of Biomechanical Analysis, Department of Physical Education, Paulista State University, Rio Claro, Brazil, Departamento de Educação Física, Universidade Estadual Paulista, Rio Claro, Brazil; Cunha S.A., Laboratory of Biomechanical Analysis, Department of Physical Education, Paulista State University, Rio Claro, Brazil, Departamento de Educação Física, Universidade Estadual Paulista, Rio Claro, Brazil; Anido R., Institute of Computing, Campinas State University, Campinas, Brazil; Leite N.J., Institute of Computing, Campinas State University, Campinas, Brazil","Methods based on visual estimation still is the most widely used analysis of the distances that is covered by soccer players during matches, and most description available in the literature were obtained using such an approach. Recently, systems based on computer vision techniques have appeared and the very first results are available for comparisons. The aim of the present study was to analyse the distances covered by Brazilian soccer players and compare the results to the European players', both data measured by automatic tracking system. Four regular Brazilian First Division Championship matches between different teams were filmed. Applying a previously developed automatic tracking system (DVideo, Campinas, Brazil), the results of 55 outline players participated in the whole game (n = 55) are presented. The results of mean distances covered, standard deviations (s) and coefficient of variation (cv) after 90 minutes were 10,012 m, s = 1,024 m and cv = 10.2%, respectively. The results of three-way ANOVA according to playing positions, showed that the distances covered by external defender (10642 ± 663 m), central midfielders (10476 ± 702 m) and external midfielders (10598 ± 890 m) were greater than forwards (9612 ± 772 m) and forwards covered greater distances than central defenders (9029 ± 860 m). The greater distances were covered in standing, walking, or jogging, 5537 ± 263 m, followed by moderate-speed running, 1731 ± 399 m; low speed running, 1615 ± 351 m; high-speed running, 691 ± 190 m and sprinting, 437 ± 171 m. Mean distance covered in the first half was 5,173 m (s = 394 m, cv = 7.6%) highly significant greater (p < 0.001) than the mean value 4,808 m (s = 375 m, cv = 7.8%) in the second half. A minute-by-minute analysis revealed that after eight minutes of the second half, player performance has already decreased and this reduction is maintained throughout the second half. ©Journal of Sports Science and Medicine (2007).","Biomechanics; Distance covered; Soccer; Tracking","","Bangsbo J., Mohr M., Krustrup P., Physical and metabolic demands of training and match-play in the elite football player, Journal of Sports Sciences, 24, 7, pp. 665-674, (2006); Bangsbo J., Norregaard L., Thorso F., Activity profile of competition soccer, Canadian Journal of Sport Sciences, 16, 2, pp. 110-116, (1991); Barros R.M.L., Russomanno T.G., Brenzikofer R., Figueroa P.J., A method to synchronise video cameras using the audio band, Journal of Biomechanics, 39, 4, pp. 776-780, (2006); Di Salvo V., Collins A., Mc Neill B., Cardinale M., Validation of Prozone ® : A new video-based performance analysis system, International Journal of Performance Analysis in Sport (serial online) 6(1), (12 screens/inclusive page), (2006); Di Salvo V., Baron R., Tschan H., Calderon Montero F.J., Bachl N., Pigozzi F., Performance Characteristics According to Playing Position in Elite Soccer, International Journal of Sports Medicine (serial online) 28(3), (06 screens/inclusive page), (2007); Figueroa P., Leite N., Barros R.M.L., Cohen I., Medioni G., Tracking soccer players using the graph representation, Proceedings of the 17th International Conference on Pattern Recognition (ICPR), August 23-26, Cambridge-UK, IV, pp. 787-790, (2004); Figueroa P.J., Leite N.J., Barros R.M., A flexible software for tracking of markers used in human motion analysis, Computer Methods and Programs in Biomedicine, 72, 2, pp. 155-165, (2003); Figueroa P.J., Leite N.J., Barros R.M.L., Background recovering in outdoor image sequences: An example of soccer players segmentation, Image and Vision Computing, 24, 4, pp. 363-374, (2006); Figueroa P.J., Leite N.J., Barros R.M.L., Tracking soccer players aiming their kinematical motion analysis, Computer Vision and Image Understanding, 101, 2, pp. 122-135, (2006); Holzer C., Hartmann U., Beetz M., von der Grun T., Match analysis by transmitter position measurement, V World Congress of Science and Football, Lisbon-Portugal. Book of Abstract, (2003); Iwase S., Saito H., Parallel tracking of all soccer players by integrating detected positions in multiple view images, Proceedings of the 17th International Conference on Pattern Recognition (ICPR), August 23-26, Cambridge-UK, IV, pp. 751-754, (2004); Krustrup P., Mohr M., Ellingsgaard H., Bangsbo J., Physical demands during an elite female soccer game: Importance of training status, Medicine and Science in Sports and Exercise, 37, 7, pp. 1242-1248, (2005); Krustrup P., Mohr M., Steensberg A., Bencke J., Kjaer M., Bangsbo J., Muscle and blood metabolites during a soccer game: Implications for sprint performance, Medicine and Science in Sports and Exercise, 38, 6, pp. 1165-1174, (2006); Liebermann D.G., Katz L., Hughes M.D., Bartlett R.M., McClements J., Franks I.M., Advances in the application of information technology to sport performance, Journal of Sports Sciences, 20, 10, pp. 755-769, (2002); Misuta M.S., Menezes R.P., Figueroa P.J., Cunha S.A., Barros R.M.L., Representation and analysis of soccer players' trajectories, XXth Congress of the International Society of Biomechanics, Cleveland, USA, (2005); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, Journal of Sports Sciences, 21, 7, pp. 519-528, (2003); Mohr M., Krustrup P., Bangsbo J., Fatigue in soccer: A brief review, Journal of Sports Sciences, 23, 6, pp. 593-599, (2005); Needham C.J., Boyle R.D., Tracking multiple sports players through oclusion, British Machine Vision Conference, Manchester-UK, pp. 93-102, (2001); Ohashi J., Miyagi O., Nagahama H., Ogushi T., Ohashi K., Application of an analysis system evaluating intermittent activity during a soccer match, Proc. Science and Football IV, W. Spinks, T. Reilly and A. Murphy, London and New York, Routledge, pp. 32-136, (2002); Rampinini E., Bishop D., Marcora S.M., Ferrari Bravo D., Sassi R., Impellizzeri F.M., Validity of Simple Field Tests as Indicators of Match-Related Physical Performance in Top-Level Professional Soccer Players, International Journal of Sports Medicine (serial online) 28(3), (08 screens/inclusive page), (2007); Reilly T., Thomas V., A motion analysis of work-rate in different positional roles in professional football match play, Journal of Human Movement Studies, 2, pp. 87-97, (1976); Rienzi E., Drust B., Reilly T., Carter J.E., Martin A., Investigation of anthropometric and work-rate profiles of elite South American international soccer players, The Journal of Sports Medicine and Physical Fitness, 40, 2, pp. 162-1699, (2000); Shiokawa M., Takahashi K., Kan A., Usui K.O.S., Choi C.S., Deguchi T., Computer analysis of a soccer game by the DLT method focusing on the movement of the players and the ball, V World Congress of Science and Football, Lisbon-Portugal. Book of Abstract, (2003); Thatcher R., Batterham A.M., Development and validation of a sport-specific exercise protocol for elite youth soccer players, The Journal of Sports Medicine and Physical Fitness, 44, 1, pp. 15-22, (2004); Toki S., Sakurai S., Quantitative match analysis of soccer games with two dimensional DLT procedures, XXth Congress of International Society of Biomechanics, Cleveland-USA, (2005); Withers R.T., Maricic Z., Wasilewski S., Kelly L., Match analyses of Australian professional soccer players, Journal of Human Movement Studies, 8, pp. 159-176, (1982)","R.M.L. Barros; Universidade Estadual de Campinas, Faculdade de Educação, Laboratório de Instrumentação para Biomecânica, CEP 13083-851, Campinas, SP, CX 6134, Brazil; email: ricardo@fef.unicamp.br","","","13032968","","","","English","J. Sports Sci. Med.","Article","Final","","Scopus","2-s2.0-34249809133" "Mihata L.C.S.; Beutler A.I.; Boden B.P.","Mihata, Leanne C. S. (13411032100); Beutler, Anthony I. (7004035992); Boden, Barry P. (7004406488)","13411032100; 7004035992; 7004406488","Comparing the incidence of anterior cruciate ligament injury in collegiate lacrosse, soccer, and basketball players: Implications for anterior cruciate ligament mechanism and prevention","2006","American Journal of Sports Medicine","34","6","","899","904","5","175","10.1177/0363546505285582","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33646570209&doi=10.1177%2f0363546505285582&partnerID=40&md5=d07c65c1dc32ff18c6ded95052eb44e0","Department of Family Practice, Malcolm Grow Medical Center, Andrews Air Force Base, MD, United States; Uniformed Services University, Bethesda, MD, United States; Orthopedic Center, Rockville, MD, United States; Department of Family Medicine, Malcolm Grow Medical Center, Andrews AFB, MD 20762, 1075 West Perimeter Road, United States","Mihata L.C.S., Department of Family Practice, Malcolm Grow Medical Center, Andrews Air Force Base, MD, United States; Beutler A.I., Department of Family Practice, Malcolm Grow Medical Center, Andrews Air Force Base, MD, United States, Uniformed Services University, Bethesda, MD, United States, Department of Family Medicine, Malcolm Grow Medical Center, Andrews AFB, MD 20762, 1075 West Perimeter Road, United States; Boden B.P., Uniformed Services University, Bethesda, MD, United States, Orthopedic Center, Rockville, MD, United States","Background: Female college basketball and soccer athletes have higher rates of anterior cruciate ligament injury than do their male counterparts. Rates of anterior cruciate ligament injuries for women and men in collegiate lacrosse have not been examined. Understanding anterior cruciate ligament injury patterns in lacrosse, a full-contact sport for men and noncontact sport for women, could further injury prevention efforts. Hypotheses: Female anterior cruciate ligament injury rates will decrease over time owing to longer participation in sports. Lacrosse anterior cruciate ligament injury rates will be lower than rates in basketball and soccer possibly owing to beneficial biomechanics of carrying a lacrosse stick. Study Design: Cohort study (Prevalence); Level of evidence, 2. Methods: Data from the National Collegiate Athletic Association Injury Surveillance System were analyzed to compare men's and women's anterior cruciate ligament injuries in basketball, lacrosse, and soccer over 15 years. Results: Anterior cruciate ligament injury rates in women's basketball and soccer were 0.28 and 0.32 injuries per 1000 athlete exposures, respectively, and did not decline over the study period. In men's basketball, injury rate fluctuated between 0.03 and 0.13 athlete exposures. Rates of anterior cruciate ligament injury did not significantly change in men's soccer over the study period. The rate of anterior cruciate ligament injury in men's lacrosse (0.17 athlete exposures, P < .05) was significantly higher than in men's basketball (0.08 athlete exposures) and soccer (0.12 athlete exposures). Injury rate in women's lacrosse (0.18 athlete exposures, P < .05) was significantly lower than in women's basketball and soccer. Conclusion: There was no discernable change in rate of anterior cruciate ligament injury in men or women during the study period. Men's lacrosse is a high-risk sport for anterior cruciate ligament injury. Unlike basketball and soccer, the rates of anterior cruciate ligament injury are essentially the same in men's and women's lacrosse. The level of allowed contact in pivoting sports may be a factor in determining sport-specific anterior cruciate ligament risk. © 2006 American Orthopaedic Society for Sports Medicine.","Anterior cruciate ligament (ACL) injury; Collegiate; Lacrosse; Women","Anterior Cruciate Ligament; Athletic Injuries; Basketball; Female; Humans; Incidence; Male; Racquet Sports; Sex Distribution; Soccer; accident prevention; anterior cruciate ligament injury; article; athlete; basketball; biomechanics; cohort analysis; college student; contact sport; female; gender; high risk population; human; incidence; major clinical study; male; prevalence; priority journal; risk assessment; sport injury","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in National Collegiate Athletic Association basketball and soccer, Am J Sports Med, 33, pp. 524-531, (2005); Intensive training and sports specialization in young athletes, Pediatrics, 106, pp. 154-157, (2000); Arendt E.A., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer, Am J Sports Med, 23, pp. 694-701, (1995); Boden B.P., Dean G.S., Feagin Jr. J.A., Garrett Jr. W.E., Mechanisms of injury in the anterior cruciate ligament, Orthopedics, 23, pp. 573-578, (2000); Delfico A., Garrett W., Mechanisms of injury of the anterior cruciate ligament in soccer players, Clin Sports Med, 17, pp. 779-785, (1998); Feagin J., Lambert K., Mechanism of injury and pathology of anterior cruciate ligament injuries, Orthop Clin North Am, 16, pp. 41-45, (1985); Malone T., Hardaker W., Garrett W., Et al., Relationship of gender to ACL injuries in intercollegiate basketball players, J South Orthop Assoc, 2, pp. 36-39, (1992); McNair P., Marshall R., Matheson J., Important features associated with acute anterior cruciate ligament injury, N Z Med J, 103, pp. 537-539, (1990); Metzl J., Expectations of pediatric sport participation among pediatricians, patients, and parents, Pediatr Clin North Am, 49, pp. 497-504, (2002); National Collegiate Athletic Association Participation Study: 1989-90 to 1992-2004, (2004); Nisell R., Mechanics of the knee joint: A study of joint and muscle load with clinical applications, Acta Orthop Scand, 216, 56 SUPPL., pp. 1-42, (1985); Noyes F.R., Mooar P.A., Matthews D.S., Butler D.L., Grood E.S., The symptomatic anterior cruciate-deficient knee, J Bone Joint Surg Am, 65, pp. 154-174, (1983)","A.I. Beutler; Department of Family Medicine, Malcolm Grow Medical Center, Andrews AFB, MD 20762, 1075 West Perimeter Road, United States; email: thesportsmd@yahoo.com","","","15523365","","AJSMD","16567461","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-33646570209" "Masuda K.; Kikuhara N.; Takahashi H.; Yamanaka K.","Masuda, Kazumi (7401446834); Kikuhara, Nobuo (6504052375); Takahashi, Hideyuki (56672263600); Yamanaka, Kunio (7202422031)","7401446834; 6504052375; 56672263600; 7202422031","The relationship between muscle cross-sectional area and strength in various isokinetic movements among soccer players","2003","Journal of Sports Sciences","21","10","","851","858","7","90","10.1080/0264041031000102042","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0142185026&doi=10.1080%2f0264041031000102042&partnerID=40&md5=f893e4ed0abd9133359a05e46c5b09cb","Faculty of Education, Kanazawa University, Kanazawa City, Ishikawa 920-1192, Kakuma-machi, Japan; Faculty of Business Administration, Osaka University of Commerce, 4-1-10 Mikuriya-Sakaemachi, Higashi Osaka City, Osaka 577-8505, Japan; Japanese Inst. of Sports Sciences, Kita-ku, Tokyo 115-0056, 3-15-1 Nishigaoka, Japan; Inst. of Health and Sport Sciences, University of Tsukuba, Tsukuba City, Ibaraki 305-8574, 1-1-1 Tennodai, Japan","Masuda K., Faculty of Education, Kanazawa University, Kanazawa City, Ishikawa 920-1192, Kakuma-machi, Japan; Kikuhara N., Faculty of Business Administration, Osaka University of Commerce, 4-1-10 Mikuriya-Sakaemachi, Higashi Osaka City, Osaka 577-8505, Japan; Takahashi H., Japanese Inst. of Sports Sciences, Kita-ku, Tokyo 115-0056, 3-15-1 Nishigaoka, Japan; Yamanaka K., Inst. of Health and Sport Sciences, University of Tsukuba, Tsukuba City, Ibaraki 305-8574, 1-1-1 Tennodai, Japan","The aim of the present study was to examine the relationships between muscle cross-sectional area (CSA) and muscular strength in terms of knee extension and flexion, hip extension and flexion, and hip abduction and adduction among well-trained soccer players. Fourteen university soccer players participated in the study, who had previously been divided into two groups based on ability (Group A: above-average ability; Group B: average ability). Maximal isokinetic and concentric muscular strength was measured in knee extension/flexion, hip extension/flexion and hip abduction/adduction using an isokinetic dynamometer at 1.57 and 4.19 rad.s-1 (3.14 rad.s-1) in both the dominant and non-dominant leg. The CSAs of the thigh, gluteus muscles and iliopsoas muscles were calculated based on magnetic resonance imaging. There was no significant difference between the two groups in muscle CSA and isokinetic strength. Although there were some statistically significant differences between the dominant and non-dominant leg in terms of CSA and strength (P < 0.05-0.01), these were small and negligible. Apart from a non-significant relationship between the CSAs of the adductor muscles and hip adductor strength (r < 0.26, N.S.), the CSA of the other muscle groups correlated with maximal isokinetic strength (r = 0.38-0.64, P < 0.05). These results suggest that no difference in muscle characteristics (in terms, of muscle CSA and strength) was apparent among well-trained soccer players, even between the dominant and non-dominant leg. There is also a case that the anatomical function of a single (or group of) muscle(s) may not be reflected by the strength-CSA relationship depending on the movements (such as hip adduction-adductor muscle CSA). Thus, further studies are required to develop methods to assess neuromuscular function in relation to muscle morphology among soccer players.","Isokinetic strength; Magnetic resonance imaging; Muscle cross-sectional area; Soccer","Adult; Anatomy, Cross-Sectional; Biomechanics; Hip; Humans; Knee; Magnetic Resonance Imaging; Muscle Contraction; Muscle, Skeletal; Soccer; Thigh; adult; article; athlete; calculation; correlation analysis; dynamometry; functional anatomy; gluteus maximus muscle; hip; human; human experiment; iliopsoas muscle; knee function; limb movement; morphology; muscle examination; muscle isometric contraction; muscle strength; neuromuscular function; normal human; nuclear magnetic resonance imaging; sport; statistical significance; thigh","Anderson D.I., Sidaway B., Coordination changes associated with practice of a soccer kick, Research Quarterly for Exercise and Sport, 65, pp. 93-99, (1994); Cabri J., De Proft E., Dufour W., Clarys J.P., The relation between muscular strength and kick performance, Science and Football, pp. 186-193, (1988); De Proft E., Cabri J., Dufour W., Clarys J.P., Strength training and kick performance in soccer players, Science and Football, pp. 108-113, (1988); De Proft E., Clarys J.P., Bollens E., Cabri J., Dufour W., Muscle activity in the soccer kick, Science and Football, pp. 434-440, (1988); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Aagaard H., Dyhre-Poulsen P., Klausen K., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scandinavian Journal of Medicine and Science in Sports, 9, pp. 195-200, (1999); Fukunaga T., Roy R.R., Shellock F.G., Hodgston J.A., Lee P.L., Kwong-Fu H., Edgerton V.R., Physiological cross-sectional area of human leg muscles based on magnetic imaging, Journal of Orthopaedic Research, 10, pp. 926-934, (1992); Hagiwara T., Tokuyama H., A study of fundamental movement in soccer - A kinesiological study of instep kicking, Bulletin of Institute of Health Sports Science, the University of Tsukuba, 6, pp. 101-111, (1983); Isokawa M., Lees A., A biomechanical analysis of the instep kick motion in soccer, Science and Football, pp. 449-455, (1988); Kahle W., Platzer L.W., Taschenatlas der Anatomie, pp. 228-251, (1984); Kano Y., Takahashi H., Morioka Y., Akima H., Miyashita K., Kuno S., Katsuta S., Relationship between the morphological features of adductor muscles and sprinting performance in sprinters, Japan Journal of Physical Education, Health and Sports Sciences, 41, pp. 352-359, (1997); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, pp. 917-927, (1998); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 441-448, (1988); McLean B.D., Tumilty M., Left-right asymmetry in two types of soccer kick, British Journal of Sports Medicine, 27, pp. 260-262, (1993); Mognoni P., Narici V., Sirtori D., Lorenzelli F., Isokinetic torques and kicking maximal ball velocity in young soccer player, Journal of Sports Medicine and Physical Fitness, 34, pp. 357-361, (1994); Narici M.V., Sirtori M.D., Mognoni P., Maximal ball velocity and peak torques of hip flexor and knee extensor muscles, Science and Football, pp. 429-433, (1988); Oberg B., Moller M., Gillquist J., Ekstrand J., Isokinetic torque levels for knee extensors and knee flexors in soccer players, International Journal of Sports Medicine, 7, pp. 50-53, (1986); Opavsky P., An investigation of linear and angular kinematics of the leg during two types of soccer kick, Science and Football, pp. 456-459, (1988); Poulmedis P., Rondoyannis G., Mitsou A., Tsarouchas E., The influence of isokinetic muscle torque exerted in various speeds on soccer ball velocity, Journal of Orthopaedic and Sports Physical Therapy, 10, pp. 93-96, (1988); Rochcongar P., Morvan R., Jan J., Dassonville J., Beillot J., Isokinetic investigation of the knee extensors and knee flexors in young French soccer players, International Journal of Sports Medicine, 9, pp. 448-450, (1988); Schantz P., Randall-Fox E., Hutchison W., Tyden A., Astrand P.O., Muscle fibre type distribution, muscle cross-sectional area and maximal voluntary strength in humans, Acta Physiologica Scandinavica, 117, pp. 219-226, (1983); Wickstrom R.L., Developmental kinesiology, Exercise and Sports Science Reviews, 3, pp. 163-192, (1975)","K. Masuda; Faculty of Education, Kanazawa University, Kanazawa City, Ishikawa 920-1192, Kakuma-machi, Japan; email: masuda@ed.kanazawa-u.ac.jp","","","02640414","","JSSCE","14620028","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-0142185026" "Zakas A.","Zakas, A. (6602991323)","6602991323","Bilateral isokinetic peak torque of quadriceps and hamstring muscles in professional soccer players with dominance on one or both two sides","2006","Journal of Sports Medicine and Physical Fitness","46","1","","28","35","7","88","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33646682401&partnerID=40&md5=9ab750d0841f9992fa9a3ce15d6ce23e","Division of Sports, Department of Physical Education and Sports Science, Aristotle University of Thessaloniki, Thessaloniki, Greece; Department of Physical Education and Sports Science, Aristotle University of Thessaloniki, Thessaloniki 540 06, Greece","Zakas A., Division of Sports, Department of Physical Education and Sports Science, Aristotle University of Thessaloniki, Thessaloniki, Greece, Department of Physical Education and Sports Science, Aristotle University of Thessaloniki, Thessaloniki 540 06, Greece","Aim. Dominance of one leg may cause asymmetry between the contralateral muscle groups and develop predisposition for injury to the leg with the weaker muscle strength. The purpose of this study was to examine the strength balance in the extensor and flexor muscle groups, as well as the hamstring to quadriceps (H/Q) ratios of both legs in professional soccer players with dominance on one or both legs. Methods. Forty-two professional soccer players of the first Greek division participated in this study. Participants were divided into 3 groups according to their leg use during training sessions and matches. Fifteen players comprised the first group with dominance to the right leg, 12 players formed the second group with dominance to the left leg, and 15 players consisted the third group with dominance to both the right and left legs. Maximum voluntary concentric torque of the hamstring and quadriceps muscles of both legs was assessed using a Norm isokinetic dynamometer at angular velocities of 12°, 60°, 180° and 300°/s. Results. No significant differences in the strength balance found between the groups. The isokinetic variables comparing the right and left body side in each group, with dominance on one or both legs, did not differ. No differences were recorded in the H/Q between the right and left legs for any of the subject groups. Conclusion. There is no evidence of muscle imbalances in extensor and flexor muscle groups and H/Q ratios between the right and left legs in professional soccer players with dominance on one or both legs. The training sessions and matches appear to have imposed strength balance for the right and left body sides of professional soccer players.","Dominance; Isokinetic; Muscular balance; Professional soccer players","Adult; Biomechanics; Functional Laterality; Humans; Muscle, Skeletal; Quadriceps Muscle; Soccer; Torque; adult; article; athlete; concentric muscle contraction; controlled study; dynamometry; extensor muscle; flexor muscle; hamstring; human; muscle isometric contraction; muscle strength; quadriceps femoris muscle; sport; torque; training","Reilly T., Thomas V., A motion analysis of work-rate in different positional roles in professional football match-play, J Hum Mov Studies, 2, pp. 87-97, (1976); Cometti G., Maffiuleti N.A., Pousson M., Chatard J.C., Maffulli N., Isokinetic strength and anaerobic power of elite, subelite and amateur French soccer players, Int J Sports Med, 22, pp. 45-51, (2001); Fried T., Lloyd G.J., An overview of common soccer injuries. Management and prevention, Sports Med, 14, pp. 269-275, (1992); Oberg B., Moller M., Gillquist J., Ekstrand J., Isokinetic torque levels for knee extensors and knee flexors in soccer players, Int J Sports Med, 7, pp. 50-53, (1986); Zakas A., Mandroukas K., Vamvakoudis E., Christoulas K., Aggelopoulou N., Peak torque of quadriceps and hamstring muscles in basketball and soccer players of different divisions, J Sports Phys Fitness, 35, pp. 199-205, (1995); Muckle D.S., Injuries in professional footballers, Br J Sports Med, 16, pp. 37-39, (1981); Brady E.C., O'Regan M., McCormack B., Isokinetic assessment of uninjured soccer players, Science and Football II, pp. 351-354, (1993); Reilly T., Fitness assessment, Science and Soccer, pp. 25-49, (1996); Starosta W., Symmetry and asymmetry in shooting demonstrated by elite soccer players, Science and Football, pp. 346-355, (1988); Haaland E., Hoff J., Non-dominant leg training improves the bilateral motor performance of soccer players, Scand J Med Sci Sports, 13, pp. 179-184, (2003); Holmes J.R., Alderink J., Isokinetic strength characteristics of the quadriceps femoris and hamstring muscles in high school students, Phys Ther, 64, pp. 914-918, (1984); Calmels P.M., Nellen M., Van Der Borne I., Jourdin P., Minaire P., Concentric and eccentric isokinetic assessment of flexor-extensor torque ratios at the hip, knee, and ankle in a sample population of healthy subjects, Arch Phys Med Rehabil, 78, pp. 1224-1230, (1997); Gur H., Akova B., Punduk Z., Kucukoglu S., Effects of age on the reciprocal peak torque ratios during knee muscle contractions in elite soccer players, Scand J Med Sci Sports, 9, pp. 81-87, (1999); Rosene J.M., Fogarty T.D., Mahaffey B.L., Isokinetic hamstring:quadriceps ratios in intercollegiate athletes, J Athl Train, 36, pp. 378-383, (2001); Siqueira C.M., Pelegrini F.R.M.M., Fontana M.F., Greve J.M.D., Isokinetic dynamometry of knee flexors and extensors: Comparative study among non-athletes, jumper athletes and runner athletes, Rev Hosp Clin Fac Med S Paulo, 57, pp. 19-24, (2002); Alexander J., Molnar G.E., Muscular strength in children: Preliminary report on objective standards, Arch Phys Med Rehabil, 54, pp. 424-427, (1973); Molnar G.E., Alexander J., Objective quantitative muscular testing in children: A pilot study, Arch Phys Med Rehabil, 57, pp. 224-228, (1974); Goslin B.R., Charteris J., Isokinetic dynamometry: Normative data for clinical use in lower extremity (knee) cases, Scand J Rehabil Med, 11, pp. 105-109, (1979); Wyatt M.P., Edwards A.M., Comparison of quadriceps and hamstring torque values during isokinetic exercise, J Sports Phys Ther, 3, pp. 48-56, (1981); McLean B.D., Tumilty D.M., Left-right asymmetry in two types of soccer kick, Br J Sports Med, 27, pp. 260-262, (1993); Li R.C.T., Maffuli N., Hsu Y.C., Chan K.M., Isokinetic strength of the quadriceps and hamstrings and functional ability of anterior cruciate deficient knees in recreational athletes, Br J Sports Med, 30, pp. 161-164, (1996); Cambell D.E., Glenn W., Rehabilitation of knee flexor and extensor muscle strength in patients with meniscectomies, ligamentous repairs, and chondromalacia, Phys Ther, 62, pp. 10-15, (1982); Lund-Hanssen H., Gannon J., Engebretsen L., Holen K., Hammer S., Isokinetic muscle performance in healthy female handball players and players with a unilateral anterior cruciate ligament reconstruction, Scand J Med Sci Sports, 6, pp. 172-175, (1996); Aagaard P., Simonsen E.B., Magnusson S.P., Larsson B., Dyhre-Poulsen P., A new concept for isokinetic hamstring:quadriceps muscle strength ratio, Am J Sports Med, 26, pp. 231-237, (1998); Gilliam T.B., Sady S.P., Freedson P.S., Villanacci J., Isokinetic torque levels for high school football players, Arch Phys Med Rehabil, 60, pp. 110-114, (1979); Zakas A., Grammatikopoulou M.G., Vergou A., Zakas N., Gravity effect on the isokinetic peak torque and hamstring to quadriceps ratios in elite basketball, volleyball and soccer players, J Hum Mov Stud, 42, pp. 271-289, (2002); Scranton P.E., Whitesel J.P., Farewell V., Cybex evaluation of the relationship between anterior and posterior compartment lower leg muscles, Foot Ankle, 6, pp. 85-89, (1985); Porter G.K., Kaminski T.W., Hatzel B., Powers M.E., Horodyski M., An examination of the stretch-shortening cycle of the dorsiflexors and evertors in uninjured and functionally unstable ankles, Athl Train, 37, pp. 494-500, (2002); Raschka C., DeMarees H., Epidemiological characteristics of soccer injuries and proposed programmes for their prevention in Schleswig-Holstein 1988, Science and Football II, pp. 383-385, (1991); Starosta W., Bergier J., Pattern of a sport technique in football based on the symmetry of movements, Science and Football II, pp. 194-210, (1991); Saliba L., Hrysomallis C., Isokinetic strength related to jumping but not kicking performance of Australian footballers, J Sci Med Sport, 4, pp. 336-347, (2001); Oda S., Motor control for bilateral muscular contractions in humans, Jpn J Physiol, 47, pp. 487-498, (1997); Fillyaw M., Bevins T., Fernandez L., Importance of correcting isokinetic peak torque for the effect of gravity when calculating knee flexor to extensor muscle ratios, Phys Ther, 66, pp. 23-29, (1986); Moffroid M.T., Whipple R., Hofkosh J., Lowman E., Thistle H., A study of isokinetic exercise, Phys Ther, 49, pp. 735-747, (1969); Bennell K., Wajswelner H., Lew P., Schall-Riaucour A., Leslie S., Plant D., Et al., Isokinetic strength testing does not predict hamstring injury in Australian rules footballers, Br J Sports Med, 32, pp. 309-314, (1998); Burkett L.N., Causative factors in hamstring strains, Med Sci Sports Exerc, 2, pp. 39-42, (1970); Stafford M.G., Grana W.A., Hamstring/quadriceps ratios in college football players: A high velocity evaluation, Am J Sports Med, 12, pp. 209-211, (1984); Kannus P., Ratio of hamstrings to quadriceps femoris muscles' strength in the anterior cruciate ligament insufficient knee: Relationship to long-term recovery, Phys Ther, 69, pp. 961-965, (1988)","A. Zakas; Department of Physical Education and Sports Science, Aristotle University of Thessaloniki, Thessaloniki 540 06, Greece; email: azakas@phed.auth.gr","","","00224707","","JMPFA","16596096","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-33646682401" "Markovic G.","Markovic, Goran (6603498300)","6603498300","Acute effects of instrument assisted soft tissue mobilization vs. foam rolling on knee and hip range of motion in soccer players","2015","Journal of Bodywork and Movement Therapies","19","4","","690","696","6","82","10.1016/j.jbmt.2015.04.010","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84947863285&doi=10.1016%2fj.jbmt.2015.04.010&partnerID=40&md5=9260b1dca88575f5aec91e63bfeeab63","Motor Control and Human Performance Laboratory, School of Kinesiology, University of Zagreb, Croatia; Research Unit Motus Melior Ltd., Zagreb, Croatia","Markovic G., Motor Control and Human Performance Laboratory, School of Kinesiology, University of Zagreb, Croatia, Research Unit Motus Melior Ltd., Zagreb, Croatia","The aim of the present investigation was to evaluate the acute effects of foam rolling (FR) and a new form of instrument-assisted soft tissue mobilization (IASTM), Fascial Abrasion Technique ™ (FAT) on hip and knee range of motion in soccer players. Twenty male soccer players randomly allocated into FR and FAT group (n = 10 each). Passive knee flexion and straight leg raise tests were measured before, immediately after and 24 h after intervention (FR or FAT). The FR group applied a 2-min quadriceps and hamstrings rolling, while FAT group received a 2-min application of FAT to the quadriceps and hamstrings muscles. Both groups significantly improved knee and hip ROM (p < 0.05), with higher gains observed in FAT group (10-19% vs. 5-9%). At 24 h post-treatment, only FAT group preserved most of the gains in ROM (7-13%; p < 0.05). These results support the use of the newly developed IASMT, Fascial Abrasion Technique ™ and FR for increasing lower extremity ROM of athletes. © 2015 Elsevier Ltd.","Flexibility; Lower extremity; Myofascial release; Warm up","Adolescent; Adult; Athletes; Biomechanical Phenomena; Hip Joint; Humans; Knee Joint; Lower Extremity; Male; Muscle, Skeletal; Range of Motion, Articular; Soccer; Therapy, Soft Tissue; Young Adult; Article; athlete; foam rolling; hamstring; hip; human; human experiment; joint mobilization; knee function; musculoskeletal system parameters; normal human; nstrument assisted soft tissue mobilization; passive straight leg raise test; quadriceps femoris muscle; range of motion; standardization; supine passive knee flexion test; adolescent; adult; biomechanics; controlled study; devices; hip; joint characteristics and functions; knee; lower limb; male; pathophysiology; randomized controlled trial; skeletal muscle; soccer; soft tissue therapy; young adult","Barnes J.F., Myofascial Release: the Search for Excellence, (1990); Bass C.R., Planchak C.J., Salzar R.S., Lucas S.R., Rafaels K.A., Shender B.S., Paskoff G., The temperature-dependent viscoelasticity of porcine lumbar spine ligaments, Spine, 32, pp. E436-E442, (2007); Behm D.G., Chaouachi A., A review of the acute effects of static and dynamic stretching on performance, Eur. J. Appl. Physiol., 111, pp. 2633-2651, (2011); Behm D.G., Peach A., Maddigan M., Massage and stretching reduce spinal reflex excitability without affecting twitch contractile properties, J. Electromyogr. Kinesiol., 23, pp. 1215-1221, (2013); Bradley P.S., Portas M.D., The relationship between preseason range of motion and muscle strain injury in elite soccer players, J. Strength Cond. Res., 21, pp. 1155-1159, (2007); Button D.C., Bradbury-Squired D., Noftall J., Sullivan K., Behm D.G., Power K., Roller-massager application to the quadriceps and knee-joint range of motion and neuromuscular efficiency during a lunge, J. Athl. Train., 50, pp. 133-140, (2015); Decoster L.C., Cleland J., Altieri C., Russell P., The effects of hamstring stretching on range of motion: a systematic literature review, J. Orthop. Sports Phys. Ther., 35, pp. 377-387, (2005); Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: the UEFA injury study, Br. J. Sports Med., 45, pp. 553-558, (2011); Ercole B., Antonio S., Julie Ann D., Stecco C., How much time is required to modify a fascial fibrosis, J. Bodyw. Mov. Ther., 14, pp. 318-325, (2010); Gabbe B.J., Finch C.F., Bennell K.L., Wajswelner H., Risk factors for hamstring injuries in community level Australian football, Br. J. Sports Med., 39, pp. 106-110, (2005); Gogia P.P., Braatz J.H., Rose S.J., Norton B.J., Reliability and validity of goniometric measurements at the knee, Phys. Ther., 67, pp. 192-195, (1987); Goldberg J., Sullivan S.J., Seaborne D.E., The effect of two intensities of massage on H-reflex amplitude, Phys. Ther., 72, pp. 449-457, (1992); Halperin I., Aboodarda S.J., Button D.C., Andersen L.L., Behm D.G., Roller massager improves range of motion of plantar flexor muscles without subsequent decreases in force parameters, Int. J. Sports Phys. Ther., 9, pp. 92-102, (2014); Henderson G., Barnes C.A., Portas M.D., Factors associated with increased propensity for hamstring injury in english premier league soccer players, J. Sci. Med. Sports, 13, pp. 397-402, (2010); Laudner K., Compton B.D., McLoda T.A., Walters C.M., Acute effects of instrument assisted soft tissue mobilization for improving posterior shoulder range of motion in collegiate baseball players, Int. J. Sports Phys. Ther., 9, pp. 1-7, (2014); MacDonald G.Z., Penney M.D., Mullaley M.E., Cuconato A.L., Drake C.D., Behm D.G., Button D.C., An acute bout of self-myofascial release increases range of motion without a subsequent decrease in muscle activation or force, J. Strength Cond. Res., 27, pp. 812-821, (2013); McHugh M.P., Cosgrave C.H., To stretch or not to stretch: the role of stretching in injury prevention and performance, Scand. J. Med. Sci. Sports., 20, pp. 169-181, (2010); Mohr A.R., Long B.C., Goad C.L., Effect of foam rolling and static stretching on passive hip-flexion range of motion, J. Sport Rehabil., 23, pp. 296-299, (2014); Norkin C.N., White D.J., Measurement of Joint Motion: a Guide to Goniometry, (2009); Rabin A., Kozol Z., Spitzer E., Finestone A., Ankle dorsiflexion among healthy men with different qualities of lower extremity movement, J. Athl. Train., 49, pp. 617-623, (2014); Scappaticci M., FAT-tool Training Manual for Health Care Professionals, (2014); Schleip R., Fascial plasticity - a new neurobiological explanation: part 1, J. Bodyw. Mov. Ther., 7, pp. 11-19, (2003); Simic L., Sarabon N., Markovic G., Does pre-exercise static stretching inhibit maximal muscular performance? A meta-analytical review, Scand. J. Med. Sci. Sports., 23, pp. 131-148, (2013); Small K., Mc Naughton L., Matthews M., A systematic review into the efficacy of static stretching as part of a warm-up for the prevention of exercise-related injury, Res. Sports Med., 16, pp. 213-231, (2008); Sullivan K.M., Silvey D.B., Button D.C., Behm D.G., Roller-massager application to the hamstrings increases sit-and-reach range of motion within five to ten seconds without performance impairments, Int. J. Sports Phys. Ther., 8, pp. 228-236, (2013); Sullivan S.J., Williams L.R., Seaborne D.E., Morelli M., Effects of massage on alpha motoneuron excitability, Phys. Ther., 71, pp. 555-560, (1991); Twomey L., Taylor J., Flexion creep deformation and hysteresis in the lumbar vertebral column, Spine., 7, pp. 116-122, (1982); Vardiman J.P., Siedlik J., Herda T., Hawkins W., Cooper M., Graham Z.A., Deckert J., Gallagher P., Instrument-assisted soft tissue mobilization: effects on the properties of human plantar flexors, Int. J. Sports Med., 36, pp. 197-203, (2015); Willems T.M., Cornelis J.A., De Deurwaerder L.E., Roelandt F., De Mits S., The effect of ankle muscle strength and flexibility on dolphin kick performance in competitive swimmers, Hum. Mov. Sci., 36, pp. 167-176, (2014); Witvrouw E., Danneels L., Asselman P., D'Have T., Cambier D., Muscle flexibility as a risk factor for developing muscle injuries in male professional soccer players. A prospective study, Am. J. Sports Med., 31, pp. 41-46, (2003); Youdas J.W., Krause D.A., Hollman J.H., Harmsen W.S., Laskowski E., The influence of gender and age on hamstring muscle length in healthy adults, J. Orthop. Sports Phys. Ther., 35, pp. 246-252, (2005)","G. Markovic; School of Kinesiology, University of Zagreb, Zagreb, Horvacanski zavoj 15, 10000, Croatia; email: gmarkov@kif.hr","","Churchill Livingstone","13608592","","JBOTF","26592226","English","J. Bodywork Mov. Ther.","Article","Final","","Scopus","2-s2.0-84947863285" "Apriantono T.; Nunome H.; Ikegami Y.; Sano S.","Apriantono, Tommy (12902665900); Nunome, Hiroyuki (6507093692); Ikegami, Yasuo (7103189958); Sano, Shinya (36784956700)","12902665900; 6507093692; 7103189958; 36784956700","The effect of muscle fatigue on instep kicking kinetics and kinematics in association football","2006","Journal of Sports Sciences","24","9","","951","960","9","94","10.1080/02640410500386050","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33746791140&doi=10.1080%2f02640410500386050&partnerID=40&md5=7dbbcbae7448ff4a9504b367e8f42c4d","Graduate School of Medicine, Nagoya University, Nagoya, Japan; Research Centre of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Japan; Graduate School of Human Informatics, Nagoya University, Nagoya, Japan","Apriantono T., Graduate School of Medicine, Nagoya University, Nagoya, Japan; Nunome H., Research Centre of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Japan; Ikegami Y., Research Centre of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Japan; Sano S., Graduate School of Human Informatics, Nagoya University, Nagoya, Japan","The aim of this study was to examine the effect of leg muscle fatigue on the kinetics and kinematics of the instep football kick. Fatigue was induced by repeated, loaded knee extension (40% body weight) and flexion (50% body weight) motions on a weight-training machine until exhaustion. The kicking motions of seven male players were captured three-dimensionally at 500 Hz before and immediately after the fatigue protocol. The significantly slower ball velocity observed in the fatigue condition was due to both reduced lower leg swing speed and poorer ball contact. The reduced leg swing speed, represented by a slower toe linear velocity immediately before ball impact and slower peak lower leg angular velocity, was most likely due to a significantly reduced resultant joint moment and motion-dependent interactive moment during kicking. These results suggest that the specific muscle fatigue induced in the present study not only diminished the ability to generate force, but also disturbed the effective action of the interactive moment leading to poorer inter-segmental coordination during kicking. Moreover, fatigue obscured the eccentric action of the knee flexors immediately before ball impact. This might increase the susceptibility to injury.","Artificial fatigue; Motion-dependent interaction; Resultant joint moment","Adult; Biomechanics; Humans; Leg; Male; Muscle Contraction; Muscle Fatigue; Muscle Strength; Physical Endurance; Soccer; adult; article; athlete; body weight; controlled study; coordination; disease predisposition; exhaustion; flexor muscle; football; human; human experiment; joint function; kinematics; kinetics; knee function; leg movement; leg muscle; linear system; machine; male; muscle fatigue; muscle force; muscle training; normal human; sport injury; velocity","Abdel-Aziz Y., Karara H., Direct linear transformation from comparator coordinates into object space coordinates in close-range photogrammetry, Proceedings of the ASP/UI Symposium on Close-Range Photogrammetry, pp. 1-18, (1971); Ae M., Tang H., Yokoi T., Estimation of inertial properties on the body segments in Japanese athletes, Biomechanisms 11: Form, Motion, and Function in Humans, pp. 23-33, (1992); 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Giakas G., Baltzopoulos V., Bartlett R., Improved extrapolation techniques in recursive digital filtering: A comparison of least squares and prediction, Journal of Biomechanics, 31, pp. 87-91, (1998); Gleeson N., Mercer T., Campbell I., Effect of a fatigue task on absolute and relativised indices of isokinetic leg strength in female collegiate soccer players, Science and Football III, pp. 162-167, (1995); Jensen R., Estimation of the biomechanical properties of three body types using a photogrammetric method, Journal of Biomechanics, 11, pp. 349-358, (1978); Kawakami Y., Kanehisa H., Ikegawa S., Fukunaga T., Concentric and eccentric muscle strength before, during and after fatigue in 13-year-old boys, European Journal of Applied Physiology, 67, pp. 121-124, (1993); Lees A., Biomechanics applied to soccer skill, Science and Soccer, pp. 123-134, (2003); Lees A., Davies T., The effects of fatigue on soccer kick kinematics, Journal of Sports Sciences, 8, pp. 156-157, (1988); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, pp. 917-927, (1998); Lieber R., Friden J., Selective damage of fast glycolytic muscle fibres with eccentric contraction of the rabbit tibialis anterior, Acta Physiologica Scandinavica, 133, pp. 587-588, (1988); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 441-448, (1988); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, Journal of Sports Sciences, 21, pp. 519-528, (2003); Narici M., Sirtori M., Mognoni P., Maximal ball velocity and peak torques of hip flexor and knee extensor muscles, Science and Football, pp. 429-433, (1988); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, pp. 2028-2036, (2002); Nunome H., Ikegami Y., Apriantono T., Sano S., Kinetic comparison of instep soccer kick between preferred and non-preferred leg in highly skilled players, Proceedings of the XXII International Symposium on Biomechanics in Sports, pp. 265-267, (2004); Pinniger G., Steele J., Groeller H., Does fatigue induced by repeated dynamic efforts affect hamstrings muscle function?, Medicine and Science in Sports and Exercise, 32, pp. 647-653, (2000); Plagenhof S., The Pattern of Human Motion, (1971); Poulmedis P., Rondoyannis G., Mitsou A., Tsarouchas E., The influence of isokinetic muscle torque exerted in various speeds on soccer ball velocity, Journal of Orthopaedic and Sports Physical Therapy, 10, pp. 93-96, (1988); Putnam C., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Medicine and Science in Sports and Exercise, 23, pp. 130-144, (1991); Rahnama N., Reilly T., Lees A., Graham-Smith P., Muscle fatigue induced by exercise simulating the work rate of competitive soccer, Journal of Sports Sciences, 21, pp. 933-942, (2003); Reilly T., Physiological aspects of soccer, Biology of Sport, 11, pp. 3-20, (1994); Robertson D., Mosher R., Work and power of the leg muscles in soccer kicking, Biomechanics IX-B, pp. 533-538, (1985); Rodacki A., Fowler N., Bennett S., Vertical jump coordination: Fatigue effects, Medicine and Science in Sports and Exercise, 34, pp. 105-116, (2002); Sprigings E., Marshall R., Elliot B., Jennings L., A three-dimensional kinematic method for determining the effect of arm segment rotations in producing racquet-head speed, Journal of Biomechanics, 27, pp. 245-254, (1994); Taylor J., Butler J., Gandevia S., Changes in muscle afferents, motoneurons and motor drive during muscle fatigue, European Journal of Applied Physiology, 83, pp. 106-115, (2000); Togari H., Kinesiological study of soccer (1), Japanese Journal of Physical Education, 16, pp. 259-264, (1972)","","","","1466447X","","JSSCE","16882629","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-33746791140" "van der Kamp J.","van der Kamp, John (57188978610)","57188978610","A field simulation study of the effectiveness of penalty kick strategies in soccer: Late alterations of kick direction increase errors and reduce accuracy","2006","Journal of Sports Sciences","24","5","","467","477","10","88","10.1080/02640410500190841","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33645882964&doi=10.1080%2f02640410500190841&partnerID=40&md5=59e2a80459351c4d82b95b65553cfd9e","Institute for Fundamental and Clinical Human Movement Sciences, Faculty of Human Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands; Institute of Human Performance, University of Hong Kong, Hong Kong, 7 Sassoon Road, Hong Kong","van der Kamp J., Institute for Fundamental and Clinical Human Movement Sciences, Faculty of Human Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands, Institute of Human Performance, University of Hong Kong, Hong Kong, 7 Sassoon Road, Hong Kong","This field experiment investigated the relative merits of approaching the penalty kick with either a keeper-independent or keeper-dependent strategy. In the keeper-independent strategy, the shooter selects a target location in advance and disregards the goalkeeper's actions during the run-up. In the keeper-dependent strategy, the shooter makes a decision resting on the anticipation of the goalkeeper's movements during the run-up. Ten intermediate-level soccer players shot at one of two visually specified targets to the right and left side of the goal. In the keeper-independent strategy condition, participants were told that the visually specified target would not change. In the keeper-dependent strategy condition, participants were told that in half of the trials the visually specified target would change side at different times before ball contact, indicating that the direction of the kick needed to be altered. The results showed that penalty-taking performance was apt to be less than perfect in the keeper-dependent strategy condition. A decrease in the time available to alter kick direction resulted in a higher risk of not only an incorrect but also inaccurate shot placement. It is concluded that anticipating the goalkeeper's movements may degrade penalty kick performance, mainly due to insufficient time to modify the kicking action. © 2006 Taylor & Francis.","Action; Anticipation; Decision making; Penalty kick; Perception","Adult; Analysis of Variance; Decision Making; Humans; Male; Soccer; Task Performance and Analysis; accuracy; adult; analysis of variance; anticipation; article; athlete; biomechanics; controlled study; decision making; error; experimental design; field experiment; human; human experiment; leg movement; male; normal human; physical performance; risk assessment; simulation; sport; sports science; task performance","Bar-Eli M., Friedman Z., Psychological stress in soccer: The case of penalty kicks, Soccer Journal, 33, pp. 49-52, (1988); Beilock S., Bertenthal B., McCoy A., Carr T., From attention to execution: Expertise, direction of attention, and speed versus accuracy in performing sensorimotor skills, Psychonomic Bulletin and Review, 11, pp. 373-379, (2004); Beilock S., Carr T., On the fragility of skilled performance: What governs choking under pressure, Journal of Experimental Psychology: General, 130, pp. 701-725, (2001); Beilock S., Carr T., From novice to expert performance: Memory, attention and the control of complex sensorimotor skills, Skill Acquisition in Sport: Research, Theory and Practice, pp. 583-616, (2004); Beilock S., Carr T., MacMahon C., Starkes J., When paying attention becomes counterproductive: Impact of divided versus skill-focused attention to novice and experienced performance of sensorimotor skills, Journal of Experimental Psychology: Applied, 8, pp. 6-16, (2002); Bootsma R., Savelsbergh G., Nooit meer tweede, Psychologie, 6, pp. 16-19, (1988); Caljouw S., van der Kamp J., Savelsbergh G., Timing of goal-directed hitting: Impact requirements change the information-movement coupling, Experimental Brain Research, 155, pp. 135-144, (2004); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (1988); Franks I., Harvey T., Cues for goalkeepers: High-tech methods used to measure penalty shot response, Soccer Journal, 42, pp. 30-38, (1997); Glover S., Separate visual representations in the planning and control of action, Behavioral and Brain Sciences, 27, pp. 3-78, (2004); Goodale M., Pelisson D., Prablanc C., Large adjustments in visually guided reaching do not depend on vision of the hand or perception of target displacement, Nature, 320, pp. 748-750, (1986); Grant A., Reilly T., Williams M., Borrie A., Analysis of the goals scored in the 1998 World Cup, Insight, 2, pp. 18-20, (1998); Helsen W., Pauwels J., The relationship between expertise and visual information processing in sport, Cognitive Issues in Motor Expertise, pp. 109-134, (1993); Helsen W., Pauwels J., A cognitive approach to visual search in sport, Visual Search, 2, pp. 379-388, (1993); Keller D., Hennemann M., Alegria J., Fussbal: Der Elfmeter. Analyse des spezifischen vorbereitenden Anpassungsverhaltens zur durchfuhrung einer sportlichen Bewegung, Leistungsport, 9, pp. 394-398, (1979); Kropp M., Trapp A., 35 Jahre Bundesliga-Elfmeter, (1999); Kuhn W., Penalty-kick strategies for shooters and goalkeepers, Science and Football, pp. 489-492, (1988); Land M., Furneaux S., The knowledge base of the oculomotor system, Philosophical Transactions of the Royal Society of London B, 352, pp. 1231-1239, (1997); Lees A., Davids K., Co-ordination and the control of kicking in soccer, Interceptive Actions in Sport Information and Movement, (2002); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (1998); Levanon J., Dapena J., Comparison of the kinematics of the full-instep drive and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, pp. 917-927, (1998); Masters R., Knowledge, knerves, know-how: The role of explicit versus implicit knowledge in the breakdown of a complex motor skill under pressure, British Journal of Psychology, 83, pp. 343-358, (1992); Masters R., Theoretical aspects of implicit learning in sport, International Journal of Sport Psychology, 31, pp. 530-541, (2000); McLeod P., Visual reaction time and high-speed ball games, Perception, 16, pp. 49-59, (1987); Miller R., Shooter vs. keeper: A tense battle. Games are won or lost by penalty kicks and PK tiebreakers, Soccer Journal, 41, pp. 59-62, (1996); Morris A., Burwitz L., Anticipation and movement strategies in elite soccer goalkeepers at penalty kicks, Journal of Sports Sciences, 7, pp. 79-80, (1989); Morya E., Ranvaud R., Pinheiro W., Dynamics of visual feedback in a laboratory simulation of a penalty kick, Journal of Sports Sciences, 21, pp. 87-95, (2003); Norman D., Shallice T., Attention to action: Willed and automatic control of behaviour, Consciousness and Self Self-Regulation: Advances in Research and Theory, pp. 1-18, (1986); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, pp. 2028-2036, (2002); Oudejans R., Michaels C., Bakker F., Dolne M., The relevance of action in perceiving affordances: Perception of catchableness of fly balls, Journal of Experimental Psychology: Human Perception and Performance, 22, pp. 879-891, (1996); Peper C., Bootsma R., Mestre D., Bakker F., Catching balls: How to get the hand to the right place at the right time, Journal of Experimental Psychology: Human Perception and Performance, 20, pp. 591-612, (1994); Paulignan Y., MacKenzie C., Marteniuk R., Jeannerod M., Selective perturbation of visual input during prehension movements: 1. The effects of changing object position, Experimental Brain Research, 83, pp. 502-512, (1991); Pisella L., Grea H., Tilikete C., An ""automatic pilot"" for the hand in the human posterior parietal cortex: Toward reinterpreting optic ataxia, Nature Neuroscience, 3, pp. 729-735, (2000); Savelsbergh G., Van der Kamp J., Williams A., Ward P., Anticipation and visual search behaviour in expert soccer goalkeepers, Ergonomics; Savelsbergh G., Williams A., Van der Kamp J., Ward P., Visual search, anticipation and expertise in soccer goalkeepers, Journal of Sports Sciences, 20, pp. 279-287, (2002); Schutz R., Gessaroli M., The analysis of repeated measures designs involving multiple dependent variables, Research Quarterly for Exercise and Sport, 58, pp. 132-149, (1987); Soechting J., Lacquaniti F., Modification of trajectory of a pointing movement in response to change in target location, Journal of Neurophysiology, 49, pp. 548-564, (1983); Vickers J., Toward defining the role of gaze control in complex targeting skills, Visual Search, 2, pp. 265-285, (1993); Vickers J., Visual control when aiming at a far target, Journal of Experimental Psychology: Human Performance and Perception, 22, pp. 342-354, (1996); Williams A., Burwitz L., Advance cue utilization in soccer, Science and Football II, pp. 239-243, (1993); Williams A., Weigelt C., Vision and proprioception in interceptive actions, Interceptive Actions in Sport: Information and Movement, pp. 90-108, (2002); Willingham D., A neuropsychological theory of motor skill learning, Psychological Review, 105, pp. 558-584, (1998)","J. van der Kamp; Institute of Human Performance, University of Hong Kong, Hong Kong, 7 Sassoon Road, Hong Kong; email: jvdkamp@hkucc.hku.hk","","","1466447X","","JSSCE","16608761","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-33645882964" "Crisco J.J.; Fiore R.; Beckwith J.G.; Chu J.J.; Brolinson G.P.; Duma S.; McAllister T.W.; Duhaime A.-C.; Greenwald R.M.","Crisco, Joseph J. (57027405800); Fiore, Russell (25640489400); Beckwith, Jonathan G. (20336822300); Chu, Jeffrey J. (8266679900); Brolinson, Gunnar Per (59158045100); Duma, Stefan (7004900468); McAllister, Thomas W. (7102068675); Duhaime, Ann-Christine (7003644713); Greenwald, Richard M. (7102717764)","57027405800; 25640489400; 20336822300; 8266679900; 59158045100; 7004900468; 7102068675; 7003644713; 7102717764","Frequency and location of head impact exposures in individual collegiate football players","2010","Journal of Athletic Training","45","6","","549","559","10","326","10.4085/1062-6050-45.6.549","https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650256929&doi=10.4085%2f1062-6050-45.6.549&partnerID=40&md5=6c2d807eca0b82f8161fbae22c3ce4e2","Department of Orthopaedics, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence, RI, United States; Department of Athletics and Physical Education, Brown University, Providence, RI, United States; Edward Via Virginia College of Osteopathic Medicine, Blacksburg, United States; Center for Injury Biomechanics, Virginia Tech-Wake Forest, Blacksburg, United States; Department of Psychiatry and Neurology, Dartmouth Hitchcock Medical School, Lebanon; Pediatric Neurosurgery, Dartmouth Hitchcock Medical Center, Hanover, NH, United States; Thayer School of Engineering, Dartmouth College, Hanover, NH, United States","Crisco J.J., Department of Orthopaedics, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence, RI, United States; Fiore R., Department of Athletics and Physical Education, Brown University, Providence, RI, United States; Beckwith J.G.; Chu J.J.; Brolinson G.P., Edward Via Virginia College of Osteopathic Medicine, Blacksburg, United States; Duma S., Center for Injury Biomechanics, Virginia Tech-Wake Forest, Blacksburg, United States; McAllister T.W., Department of Psychiatry and Neurology, Dartmouth Hitchcock Medical School, Lebanon; Duhaime A.-C., Pediatric Neurosurgery, Dartmouth Hitchcock Medical Center, Hanover, NH, United States; Greenwald R.M., Thayer School of Engineering, Dartmouth College, Hanover, NH, United States","Context: Measuring head impact exposure is a critical step toward understanding the mechanism and prevention of sportrelated mild traumatic brain (concussion) injury, as well as the possible effects of repeated subconcussive impacts. Objective: To quantify the frequency and location of head impacts that individual players received in 1 season among 3 collegiate teams, between practice and game sessions, and among player positions. Design: Cohort study. Setting: Collegiate football field. Patients or Other Participants: One hundred eighty-eight players from 3 National Collegiate Athletic Association football teams. Intervention(s): Participants wore football helmets instrumented with an accelerometer-based system during the 2007 fall season. Main Outcome Measure(s): The number of head impacts greater than 10g and location of the impacts on the player's helmet were recorded and analyzed for trends and interactions among teams (A, B, or C), session types, and player positions using Kaplan-Meier survival curves. Results: The total number of impacts players received was nonnormally distributed and varied by team, session type, and player position. The maximum number of head impacts for a single player on each team was 1022 (team A), 1412 (team B), and 1444 (team C). The median number of head impacts on each team was 4.8 (team A), 7.5 (team B), and 6.6 (team C) impacts per practice and 12.1 (team A), 14.6 (team B), and 16.3 (team C) impacts per game. Linemen and linebackers had the largest number of impacts per practice and per game. Offensive linemen had a higher percentage of impacts to the front than to the back of the helmet, whereas quarterbacks had a higher percentage to the back than to the front of the helmet. Conclusions: The frequency of head impacts and the location on the helmet where the impacts occur are functions of player position and session type. These data provide a basis for quantifying specific head impact exposure for studies related to understanding the biomechanics and clinical aspects of concussion injury, as well as the possible effects of repeated subconcussive impacts in football. © by the National Athletic Trainers' Association, Inc.","Accelerometers; Biomechanics; Concussions","Acceleration; Adolescent; Athletic Injuries; Biomechanics; Brain Concussion; Brain Injuries; Cohort Studies; Football; Humans; Kaplan-Meier Estimate; Male; Risk Factors; Statistics as Topic; Statistics, Nonparametric; United States; Universities; Young Adult; acceleration; adolescent; adult; article; biomechanics; brain concussion; brain injury; cohort analysis; comparative study; football; human; injury; Kaplan Meier method; male; nonparametric test; risk factor; sport injury; statistics; United States; university","Gerberding J.L., Report to Congress on Mild Traumatic Brain Injury in the United States: Steps to Preventing a Serious Public Health Problem, (2003); Thurman D.J., Branche C.M., Sniezek J.E., The epidemiology of sportsrelated traumatic brain injuries in the United States: Recent developments, J Head Trauma Rehabil., 13, 2, pp. 1-8, (1998); Powell J.W., Barber-Foss K.D., Traumatic brain injury in high school athletes, JAMA, 282, 10, pp. 958-963, (1999); Powell J.W., Barber-Foss K.D., Injury patterns in selected high school sports: A review of the 1995-1997 seasons, J Athl Train., 34, 3, pp. 277-284, (1999); Collins M.W., Lovell M.R., McKeag D.B., Current issues in managing sports-related concussion, JAMA, 282, 24, pp. 2283-2285, (1999); Guskiewicz K.M., Weaver N.L., Padua D.A., Garrett Jr. W.E., Epidemiology of concussion in collegiate and high school football players, Am J Sports Med., 28, 5, pp. 643-650, (2000); Raghupathi R., Mehr M.F., Helfaer M.A., Margulies S.S., Traumatic axonal injury is exacerbated following repetitive closed head injury in the neonatal pig, J Neurotrauma., 21, 3, pp. 307-316, (2004); Laurer H.L., Bareyre F.M., Lee V.M., Et al., Mild head injury increasing the brain's vulnerability to a second concussive impact, J Neurosurg., 95, 5, pp. 859-870, (2001); Gennarelli T.A., Thibault L.E., Adams J.H., Graham D.I., Thompson C.J., Marcincin R.P., Diffuse axonal injury and traumatic coma in the primate, Ann Neurol., 12, 6, pp. 564-574, (1982); Gennarelli T.A., Thibault L.E., Biomechanics of acute subdural hematoma, J Trauma., 22, 8, pp. 680-686, (1982); Gennarelli T.A., Animate models of human head injury, J Neurotrauma., 11, 4, pp. 357-368, (1994); Prange M.T., Margulies S.S., Regional, directional, and age-dependent properties of the brain undergoing large deformation, J Biomech Eng., 124, 2, pp. 244-252, (2002); Dick R., Agel J., Marshall S.W., National collegiate athletic association injury surveillance system commentaries: Introduction and methods, J Athl Train., 42, 2, pp. 173-182, (2007); Pellman E.J., Viano D.C., Tucker A.M., Casson I.R., Committee on mild traumatic brain injury, national football league. Concussion in professional football: Location and direction of helmet impacts. Part 2, Neurosurgery, 53, 6, pp. 1328-1341, (2003); Pellman E.J., Viano D.C., Tucker A.M., Casson I.R., Waeckerle J.F., Concussion in professional football: Reconstruction of game impacts and injuries, Neurosurgery, 53, 4, pp. 799-814, (2003); Naunheim R.S., Standeven J., Richter C., Lewis L.M., Comparison of impact data in hockey, football, and soccer, J Trauma., 48, 5, pp. 938-941, (2000); Moon D.W., Beedle C.W., Kovacic C.R., Peak head acceleration of athletes during competition: Football, Med Sci Sports., 3, 1, pp. 44-50, (1971); Reid S.E., Tarkington J.A., Epstein H.M., O'Dea T.J., Brain tolerance to impact in football, Surg Gynecol Obstet., 133, 6, pp. 929-936, (1971); Crisco J.J., Chu J.J., Greenwald R.M., An algorithm for estimating acceleration magnitude and impact location using multiple nonorthogonal single-axis accelerometers, J Biomech Eng., 126, 6, pp. 849-854, (2004); Manoogian S., McNeely D., Duma S., Brolinson G., Greenwald R., Head acceleration is less than 10 percent of helmet acceleration in football impacts, Biomed Sci Instrum., 42, pp. 383-388, (2006); Beckwith J.G., Chu J.J., Greenwald R.M., Validation of a noninvasive system for measuring head acceleration for use during boxing competition, J Appl Biomech., 23, 3, pp. 238-244, (2007); Schnebel B., Gwin J.T., Anderson S., Gatlin R., In vivo study of head impacts in football: A comparison of National Collegiate Athletic Association Division I versus high school impacts, Neurosurgery., 60, 3, pp. 490-496, (2007); Brolinson P.G., Manoogian S., McNeely D., Goforth M., Greenwald R., Duma S., Analysis of linear head accelerations from collegiate football impacts, Curr Sports Med Rep., 5, 1, pp. 23-28, (2006); Mihalik J.P., Bell D.R., Marshall S.W., Guskiewicz K.M., Measurement of head impacts in collegiate football players: An investigation of positional and event-type differences, Neurosurgery, 61, 6, pp. 1229-1235, (2007); Duma S.M., Manoogian S.J., Bussone W.R., Et al., Analysis of real-time head accelerations in collegiate football players, Clin J Sport Med., 15, 1, pp. 3-8, (2005); Greenwald R.M., Gwin J.T., Chu J.J., Crisco J.J., Head impact severity measures for evaluating mild traumatic brain injury risk exposure, Neurosurgery., 62, 4, pp. 789-798, (2008); Shankar P.R., Fields S.K., Collins C.L., Dick R.W., Comstock R.D., Epidemiology of high school and collegiate football injuries in the United States, 2005-2006, Am J Sports Med., 35, 8, pp. 1295-1303, (2007); Gurdjian E.S., Lissner H.R., Hodgson V.R., Patrick L.M., Mechanism of head injury, Clin Neurosurg., 12, pp. 112-128, (1964); Ommaya A.K., Yarnell P., Hirsch A.E., Harris E.H., Scaling of experimental data on cerebral concussion in sub-human primates to concussion threshold for man, Proceedings of the 11th Stapp Car Crash Conference, pp. 47-52, (1967)","J. J. Crisco; Department of Orthopaedics, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence, RI 02903, CORO West, Suite 404, 1 Hoppin Street, United States; email: joseph_crisco@brown.edu","","","10626050","","JATTE","21062178","English","J. Athl. Train.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-78650256929" "Naunheim R.S.; Bayly P.V.; Standeven J.; Neubauer J.S.; Lewis L.M.; Genin G.M.","Naunheim, Rosanne S. (6603425780); Bayly, Philip V. (7006002626); Standeven, John (7004012557); Neubauer, Jeremy S. (57197188049); Lewis, Larry M. (35465097100); Genin, Guy M. (7004168943)","6603425780; 7006002626; 7004012557; 57197188049; 35465097100; 7004168943","Linear and angular head accelerations during heading of a soccer ball","2003","Medicine and Science in Sports and Exercise","35","8","","1406","1412","6","108","10.1249/01.MSS.0000078933.84527.AE","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0042707831&doi=10.1249%2f01.MSS.0000078933.84527.AE&partnerID=40&md5=51f93b86dc963a1fa01ddc8a96a2decb","Division of Emergency Medicine, Washington University in St. Louis, St. Louis, MO, United States; Department of Mechanical Engineering, Washington University in St. Louis, St. Louis, MO, United States; Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO, United States; Human Performance Laboratory, Barnes Jewish Hospital, St. Louis, MO, United States; Department of Mechanical Engineering, Henry Edwin Sever Sch. Eng./Appl. S., Washington University in St. Louis, St. Louis, MO 63130, United States","Naunheim R.S., Division of Emergency Medicine, Washington University in St. Louis, St. Louis, MO, United States; Bayly P.V., Department of Mechanical Engineering, Washington University in St. Louis, St. Louis, MO, United States, Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO, United States; Standeven J., Human Performance Laboratory, Barnes Jewish Hospital, St. Louis, MO, United States; Neubauer J.S., Department of Mechanical Engineering, Washington University in St. Louis, St. Louis, MO, United States; Lewis L.M., Division of Emergency Medicine, Washington University in St. Louis, St. Louis, MO, United States; Genin G.M., Department of Mechanical Engineering, Washington University in St. Louis, St. Louis, MO, United States, Department of Mechanical Engineering, Henry Edwin Sever Sch. Eng./Appl. S., Washington University in St. Louis, St. Louis, MO 63130, United States","Purpose: Cognitive deficits observed in professional soccer players may be related to heading of a soccer ball. To assess the severity of a single instance of heading a soccer ball, this study experimentally and theoretically evaluated the linear and angular accelerations experienced by the human head during a frontal heading maneuver. Methods: Accelerations were measured using a set of three triaxial accelerometers mounted to the head of each of four adult male subjects. These measurements (nine signals) were used to estimate the linear acceleration of the mass center and the angular acceleration of the head. Results were obtained for ball speeds of 9 and 12 m·s-1 (approximately 20 and 26 mph). A simple mathematical model was derived for comparison. Results: At 9 m·s-1, peak linear acceleration of the head was 158 ± 19 m·s-2 (mean ± standard deviation) and peak angular acceleration was 1302 ± 324 rad·s-2; at 12 re·s-1, the values were 199 ± 27 m·s-2 and 1457 ± 297 rad·s-2, respectively. The initial acceleration pulses lasted approximately 25 ms. Measured head accelerations confirmed laboratory headform measurements reported in the literature and fell within the ranges predicted by the theoretical model. Conclusions: Linear and angular acceleration levels for a single heading maneuver were well below those thought to be associated with traumatic brain injury, as were computed values of the Gadd Severity Index and the Head Injury Criterion. However, the effect of repeated acceleration at this relatively low level is unknown.","Brain injury; Impact modeling; Kinematic measurements; Kinematic modeling","Acceleration; Adult; Biomechanics; Exercise; Head; Humans; Male; Models, Biological; Neck; Soccer; acceleration; accelerometer; adult; article; brain injury; disease severity; head movement; human; human experiment; male; normal human; sport; theoretical model","Adams J.H., Graham D.I., Gennarelli T.A., Head injury in man and experimental animals: Neuropathology, Acta Neurochir. Suppl., 32, pp. 15-30, (1983); Anderson S.J., Griesemer B.A., Johnson M.D., Et al., Injuries in youth soccer: A subject review, Pediatrics, 105, pp. 659-661, (2000); Bailey B.N., Gudeman S.K., Minor head injury, Textbook of Head Injury, pp. 308-318, (1989); Bain A.C., Meaney D.F., Tissue-level thresholds for axonal damage in an experimental model of central nervous system white matter injury, J. Biomech. Eng., 122, pp. 615-622, (2000); Barnes B.C., Cooper L., Kirkendell D.T., Mcdermott T.P., Jordan B.D., Garrett W.E., Concussion history in elite male and female soccer players, Am. J. Sports Med., 26, pp. 433-438, (1998); Baroff G.S., Is heading a soccer ball injurious to brain function?, J. Head Trauma Rehabil., 13, pp. 45-52, (1998); Boden B.P., Kirkendell D.T., Garrett W.E., Concussion incidence in elite college soccer players, Am. J. Sports Med., 26, pp. 238-241, (1998); Gadd C.W., Use of a Weighted-Impulse Criterion for Estimating Injury Hazard, (1966); Geddes J.F., Vowles G.H., Nicoll J.A.R., Revesz T., Neuronal cytoskeletal changes are an early consequence of repetitive head injury, Acta Neuropathol., 98, pp. 171-178, (1999); Gennarelli T.A., Head injury in man and experimental animals: Clinical aspects, Acta Neurochir. Suppl., 32, pp. 1-13, (1983); Ginsberg G., Genin J., Dynamics, (1995); Green G.A., Jordan S.E., Are brain injuries a significant problem in soccer?, Clin. Sports Med., 17, pp. 795-809, (1998); Guskiewicz K.M., Marshall S.W., Broolio S.P., Cantu R.C., Kirkendell D.T., No evidence of impaired neurocognitive performance in collegiate soccer players, Am. J. Sports Med., 30, pp. 157-162, (2002); Jordan S.E., Green G.A., Acute and chronic brain injury in US National Team soccer players, Am. J. Sports Med., 24, pp. 205-210, (1996); King A.I., Viano D.C., Mechanics of head/neck, The Bioengineering Handbook, pp. 357-368, (1995); Kross R., Ohler K., Barolin G.S., Effect of heading in soccer on the head: A quantifying EEG study of soccer players, EEG EMG Z Elektroenzephalogr. Elektromyogr. Verwandte Geb., 14, pp. 209-212, (1983); Naunheim R.S., Standeven J., Richter C., Lewis L.M., A comparison of impact data in hockey, football, and soccer, J. Trauma, 48, pp. 938-941, (2000); Margulies S.S., Thibault L.E., An analytical model of diffuse brain injury, J. Biomech. Eng., 111, pp. 241-249, (1989); Margulies S.S., Thibault L.E., A proposed tolerance criterion for diffuse axonal injury in man, J. Biomech., 8, pp. 917-923, (1992); Matser E.J.T., Kessels A.G., Lezak M.D., Jordan B.D., Troost J., Neuropsychological impairment in amateur soccer players, JAMA, 282, pp. 971-973, (1999); Naunheim R.S., Ryden A., Standeven J., Et al., Does soccer headgear attenuate the impact when heading a soccer ball?, Acad. Emerg. Med., 10, pp. 85-90, (2003); Newman J.A., Head Injury Criteria in Automotive Crash Testing, (1980); Ommaya A.K., Gennarelli T.A., Cerebral concussion and traumatic unconsciousness: Correlation of experimental and clinical observations on blunt head injuries, Brain, 97, pp. 633-654, (1974); Onusic H., HIC (Head Injury Criterion) and SI (Severity Index) of impacts with different pulse shapes, Int. J. Vehicle Design, 16, pp. 194-201, (1995); Sortland O., Tysvaer A.T., Brain damage in former association football players: An evaluation by cerebral computed tomography, Neuroradiology, 31, pp. 44-48, (1989); Tysavaer A.T., Lochen E.A., Soccer injuries to the brain: A neuropsychologic study of former soccer players, Am. J. Sports Med., 19, pp. 56-60, (1991); Tysvaer A.T., Storli O.V., Bachen N.I., Soccer injuries to the brain: A neurologic and electroencephalographic study of former players, Acta Neurol. Scand., 80, pp. 151-156, (1989)","G.M. Genin; Department of Mechanical Engineering, Henry Edwin Sever Sch. Eng./Appl. S., Washington University in St. Louis, St. Louis, MO 63130, United States; email: gmg@me.wustl.edu","","","01959131","","MSCSB","12900697","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-0042707831" "Padua D.A.; DiStefano L.J.; Beutler A.I.; De La Motte S.J.; DiStefano M.J.; Marshall S.W.","Padua, Darin A. (7005626883); DiStefano, Lindsay J. (24480755900); Beutler, Anthony I. (7004035992); De La Motte, Sarah J. (34970930100); DiStefano, Michael J. (26646424700); Marshall, Steven W. (7401823263)","7005626883; 24480755900; 7004035992; 34970930100; 26646424700; 7401823263","The landing error scoring system as a screening tool for an anterior cruciate ligament injury-prevention program in elite-youth soccer athletes","2015","Journal of Athletic Training","50","6","","589","595","6","277","10.4085/1062-6050-50.1.10","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84933527796&doi=10.4085%2f1062-6050-50.1.10&partnerID=40&md5=7fc0f0c57eaf8cd8a6bc763f3f5767cd","Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, 216 Fetzer Gym, CB #8700, Chapel Hill, 27599-8700, NC, United States; University of Connecticut, Storrs, United States; Uniformed Services University of the Health Sciences, Bethesda, MD, United States","Padua D.A., Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, 216 Fetzer Gym, CB #8700, Chapel Hill, 27599-8700, NC, United States; DiStefano L.J., University of Connecticut, Storrs, United States; Beutler A.I., Uniformed Services University of the Health Sciences, Bethesda, MD, United States; De La Motte S.J., Uniformed Services University of the Health Sciences, Bethesda, MD, United States; DiStefano M.J., Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, 216 Fetzer Gym, CB #8700, Chapel Hill, 27599-8700, NC, United States; Marshall S.W., Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, 216 Fetzer Gym, CB #8700, Chapel Hill, 27599-8700, NC, United States","Context: Identifying neuromuscular screening factors for anterior cruciate ligament (ACL) injury is a critical step toward large-scale deployment of effective ACL injury-prevention programs. The Landing Error Scoring System (LESS) is a valid and reliable clinical assessment of jump-landing biomechanics. Objective: To investigate the ability of the LESS to identify individuals at risk for ACL injury in an elite-youth soccer population. Design: Cohort study. Setting: Field-based functional movement screening performed at soccer practice facilities. Patients or Other Participants: A total of 829 elite-youth soccer athletes (348 boys, 481 girls; age = 13.9 ± 1.8 years, age range = 11 to 18 years), of whom 25% (n = 207) were less than 13 years of age. Intervention(s): Baseline preseason testing for all participants consisted of a jump-landing task (3 trials). Participants were followed prospectively throughout their soccer seasons for diagnosis of ACL injuries (1217 athlete-seasons of follow-up). Main Outcome Measure(s): Landings were scored for ""errors"" in technique using the LESS. We used receiver operator characteristic curves to determine a cutpoint on the LESS. Sensitivity and specificity of the LESS in predicting ACL injury were assessed. Results: Seven participants sustained ACL injuries during the follow-up period; the mechanism of injury was noncontact or indirect contact for all injuries. Uninjured participants had lower LESS scores (4.43 ± 1.71) than injured participants (6.24 ± 1.75; t1215 = -2.784, P = .005). The receiver operator characteristic curve analyses suggested that 5 was the optimal cutpoint for the LESS, generating a sensitivity of 86% and a specificity of 64%. Conclusions: Despite sample-size limitations, the LESS showed potential as a screening tool to determine ACL injury risk in elite-youth soccer athletes. © by the National Athletic Trainers' Association, Inc.","Biomechanics; Children; Knee; Movement patterns","Adolescent; Anterior Cruciate Ligament Injuries; Athletes; Athletic Injuries; Biomechanical Phenomena; Case-Control Studies; Child; Early Diagnosis; Female; Humans; Knee Injuries; Male; Movement; Prospective Studies; Risk Factors; Soccer; Sports Medicine; Video Recording; adolescent; anterior cruciate ligament injury; athlete; biomechanics; case control study; child; clinical trial; early diagnosis; evaluation study; female; human; injuries; knee injury; male; movement (physiology); multicenter study; physiology; procedures; prospective study; risk factor; soccer; sport injury; sports medicine; videorecording","Brophy R.H., Schmitz L., Wright R.W., Et al., Return to play and future ACL injury risk after ACL reconstruction in soccer athletes from the Multicenter Orthopaedic Outcomes Network (MOON) group, Am J Sports Med, 40, 11, pp. 2517-2522, (2012); Moksnes H., Engebretsen L., Eitzen I., Risberg M.A., Functional outcomes following a non-operative treatment algorithm for anterior cruciate ligament injuries in skeletally immature children 12 years and younger: A prospective cohort with 2 years follow-up, Br J Sports Med, 47, 8, pp. 488-494, (2013); Noyes F.R., Mooar P.A., Matthews D.S., Butler D.L., The symptomatic anterior cruciate-deficient knee: Part I. The long-term functional disability in athletically active individuals, J Bone Joint Surg Am, 65, 2, pp. 154-162, (1983); Noyes F.R., Matthews D.S., Mooar P.A., Grood E.S., The symptomatic anterior cruciate-deficient knee: Part II. The results of rehabilitation, activity modification, and counseling on functional disability, J Bone Joint Surg Am, 65, 2, pp. 163-174, (1983); Ahlden M., Samuelsson K., Sernert N., Forssblad M., Karlsson J., Kartus J., The Swedish National Anterior Cruciate Ligament Register: A report on baseline variables and outcomes of surgery for almost 18,000 patients, Am J Sports Med, 40, 10, pp. 2230-2235, (2012); Van Mechelen W., Hlobil H., Kemper H.C., Incidence, severity, aetiology and prevention of sports injuries: A review of concepts, Sports Med, 14, 2, pp. 82-99, (1992); Boden B.P., Torg J.S., Knowles S.B., Hewett T.E., Video analysis of anterior cruciate ligament injury: Abnormalities in hip and ankle kinematics, Am J Sports Med, 37, 2, pp. 252-259, (2009); Krosshaug T., Nakamae A., Boden B.P., Et al., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, Am J Sports Med, 35, 3, pp. 359-367, (2007); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, 6, pp. 930-935, (1995); Withrow T.J., Huston L.J., Wojtys E.M., Ashton-Miller J.A., The effect of an impulsive knee valgus moment on in vitro relative ACL strain during a simulated jump landing, Clin Biomech (Bristol, Avon), 21, 9, pp. 977-983, (2006); Padua D.A., Executing a collaborative prospective risk-factor study: Findings, successes, and challenges, J Athl Train, 45, 5, pp. 519-521, (2010); Zazulak B.T., Hewett T.E., Reeves N.P., Goldberg B., Cholewicki J., Deficits in neuromuscular control of the trunk predict knee injury risk: A prospective biomechanical-epidemiologic study, Am J Sports Med, 35, 7, pp. 1123-1130, (2007); Hewett T.E., Myer G.D., Ford K.R., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Padua D.A., Marshall S.W., Boling M.C., Thigpen C.A., Garrett W.E., Beutler A.I., The Landing Error Scoring System (LESS) is a valid and reliable clinical assessment tool of jump-landing biomechanics: The JUMP-ACL study, Am J Sports Med, 37, 10, pp. 1996-2002, (2009); Smith H.C., Johnson R.J., Shultz S.J., Et al., A prospective evaluation of the Landing Error Scoring System (LESS) as a screening tool for anterior cruciate ligament injury risk, Am J Sports Med, 40, 3, pp. 521-526, (2012); Padua D.A., Boling M.C., DiStefano L.J., Onate J.A., Beutler A.I., Marshall S.W., Reliability of the Landing Error Scoring System-real time, a clinical assessment tool of jump-landing biomechanics, J Sport Rehabil, 20, 2, pp. 145-156, (2011); DiStefano L.J., Padua D.A., DiStefano M.J., Marshall S.W., Influence of age, sex, technique, and exercise program on movement patterns after an anterior cruciate ligament injury prevention program in youth soccer players, Am J Sports Med, 37, 3, pp. 495-505, (2009); Padua D.A., DiStefano L.J., Marshall S.W., Beutler A.I., De La Motte S.J., DiStefano M.J., Retention of movement pattern changes after a lower extremity injury prevention program is affected by program duration, Am J Sports Med, 40, 2, pp. 300-306, (2012); Laboute E., Savalli L., Puig P., Et al., Analysis of return to competition and repeat rupture for 298 anterior cruciate ligament reconstructions with patellar or hamstring tendon autograft in sportspeople, Ann Phys Rehabil Med, 53, 10, pp. 598-614, (2010); Shelbourne K.D., Gray T., Haro M., Incidence of subsequent injury to either knee within 5 years after anterior cruciate ligament reconstruction with patellar tendon autograft, Am J Sports Med, 37, 2, pp. 246-251, (2009); Pinczewski L.A., Lyman J., Salmon L.J., Russell V.J., Roe J., Linklater J., A 10-year comparison of anterior cruciate ligament reconstructions with hamstring tendon and patellar tendon autograft: A controlled, prospective trial, Am J Sports Med, 35, 4, pp. 564-574, (2007); Gokeler A., Hof A.L., Arnold M.P., Dijkstra P.U., Postema K., Otten E., Abnormal landing strategies after ACL reconstruction, Scand J Med Sci Sports, 20, 1, pp. E12-E19, (2010); Butler R.J., Minick K.I., Ferber R., Underwood F., Gait mechanics after ACL reconstruction: Implications for the early onset of knee osteoarthritis, Br J Sports Med, 43, 5, pp. 366-370, (2009); Oberlander K.D., Bruggemann G.P., Hoher J., Karamanidis K., Altered landing mechanics in ACL-reconstructed patients, Med Sci Sports Exerc, 45, 3, pp. 506-513, (2013); Marshall S.W., Padua D.A., McGrath M., Incidence of ACL injury, Understanding and Preventing Noncontact ACL Injuries, pp. 5-29, (2007)","D.A. Padua; Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, 216 Fetzer Gym, CB #8700, 27599-8700, United States; email: dpadua@email.unc.edu","","National Athletic Trainers' Association Inc.","10626050","","JATTE","25811846","English","J. Athl. Train.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-84933527796" "Hader K.; Mendez-Villanueva A.; Palazzi D.; Ahmaidi S.; Buchheit M.","Hader, Karim (54389115200); Mendez-Villanueva, Alberto (15035651800); Palazzi, Dino (56140923600); Ahmaidi, Said (56255027000); Buchheit, Martin (17343379000)","54389115200; 15035651800; 56140923600; 56255027000; 17343379000","Metabolic power requirement of change of direction speed in young soccer players: Not all is what it seems","2016","PLoS ONE","11","3","e0149839","","","","85","10.1371/journal.pone.0149839","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961279470&doi=10.1371%2fjournal.pone.0149839&partnerID=40&md5=10cb560c0ef4145586be5b7fe60dfebd","Laboratory of Exercise Physiology and Rehabilitation, EA 3300, Faculty of Sport Sciences, University of Picardie, Jules Verne, Amiens, 80025, France; National Sports Medicine Programme, Excellence in Football Project, Aspetar-Orthopaedic and Sports Medicine Hospital, Doha, Qatar; Sport Science Department, Aspire Academy, Doha, Qatar; Sport Science Department, Myorobie Association, Montvalezan, France; Performance Department, Paris Saint Germain Football Club, Saint-Germain-en-Laye, France; Institute of Sport, Exercise and Active Living, College of Sport and Exercise Science, Victoria University, Melbourne, Australia","Hader K., Laboratory of Exercise Physiology and Rehabilitation, EA 3300, Faculty of Sport Sciences, University of Picardie, Jules Verne, Amiens, 80025, France, National Sports Medicine Programme, Excellence in Football Project, Aspetar-Orthopaedic and Sports Medicine Hospital, Doha, Qatar; Mendez-Villanueva A., Sport Science Department, Aspire Academy, Doha, Qatar; Palazzi D., Sport Science Department, Aspire Academy, Doha, Qatar; Ahmaidi S., Laboratory of Exercise Physiology and Rehabilitation, EA 3300, Faculty of Sport Sciences, University of Picardie, Jules Verne, Amiens, 80025, France; Buchheit M., Sport Science Department, Myorobie Association, Montvalezan, France, Performance Department, Paris Saint Germain Football Club, Saint-Germain-en-Laye, France, Institute of Sport, Exercise and Active Living, College of Sport and Exercise Science, Victoria University, Melbourne, Australia","Purpose The aims of this study were to 1) compare the metabolic power demand of straight-line and change of direction (COD) sprints including 45° or 90°-turns, and 2) examine the relation between estimated metabolic demands and muscular activity throughout the 3 phases of COD-sprints. Methods Twelve highly-trained soccer players performed one 25-m and three 20-m sprints, either in straight-line or with one 45°- or 90°-COD. Sprints were monitored with 2 synchronized 100- Hz laser guns to assess players' velocities before, during and after the COD. Acceleration and deceleration were derived from changes in speed over time. Metabolic power was estimated based on di Prampero's approach (2005). Electromyography amplitude (RMS) of 2 lower limb muscles was measured. The expected energy expenditure during time-adjusted straight-line sprints (matching COD sprints time) was also calculated. Results Locomotor-dependant metabolic demand was largely lower with COD (90°, 142.1±13.5 J. kg-1) compared with time-adjusted (effect size, ES = -3.0; 193.2±18.6 J.kg-1) and nonadjusted straight-line sprints (ES = -1.7; 168.4±15.3 J.kg-1). Metabolic power requirement was angle-dependent, moderately lower for 90°-COD vs. 45°-COD sprint (ES = -1.0; 149.5 ±10.4 J.kg-1). Conversely, the RMS was slightly- (45°, ES = +0.5; +2.1%, 90% confidence limits (±3.6) for vastus lateralis muscle (VL)) to-largely (90°, ES = +1.6; +6.1 (3.3%) for VL) greater for COD-sprints. Metabolic power/RMS ratio was 2 to 4 times lower during deceleration than acceleration phases. Conclusion Present results show that COD-sprints are largely less metabolically demanding than linear sprints. This may be related to the very low metabolic demand associated with the deceleration phase during COD-sprints that may not be compensated by the increased requirement of the reacceleration phase. These results also highlight the dissociation between metabolic and muscle activity demands during COD-sprints, which questions the use of metabolic power as a single measure of running load in soccer. © 2016 Hader et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.","","Adolescent; Athletic Performance; Biomechanical Phenomena; Electromyography; Energy Metabolism; Humans; Male; Muscles; Running; Soccer; acceleration; active energy expenditure; adolescent; anthropometric parameters; Article; athlete; athletic performance; body movement; change of direction; change of direction sprint; correlation coefficient; deceleration; electromyography; endurance training; energy consumption; energy expenditure; human; human experiment; movement (physiology); muscle contraction; normal human; straight line sprint; vastus lateralis muscle; velocity; biomechanics; energy metabolism; male; muscle; physiology; running; soccer","Karcher C., Buchheit M., On-court demands of elite handball, with special reference to playing positions, Sports Medicine., 44, 6, pp. 797-814, (2014); 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Hopkins W.G., Marshall S.W., Batterham A.M., Hanin J., Progressive statistics for studies in sports medicine and exercise science, Medicine and Science in Sports and Exercise., 41, 1, pp. 3-13, (2009); Hewit J.K., Cronin J.B., Hume P.A., Kinematic factors affecting fast and slow straight and change-of-direction acceleration times, Journal of Strength and Conditioning Research/National Strength & Conditioning Association., 27, 1, pp. 69-75, (2013); Buchheit M., Manouvrier C., Cassirame J., Morin J.B., Monitoring locomotor load in soccer: Is metabolic power powerful?, International Journal of Sports Medicine., (2015); Abbott B.C., Bigland B., Ritchie J.M., The physiological cost of negative work, The Journal of Physiology., 117, 3, pp. 380-390, (1952); Ryschon T.W., Fowler M.D., Wysong R.E., Anthony A., Balaban R.S., Efficiency of human skeletal muscle in vivo: Comparison of isometric, concentric, and eccentric muscle action, Journal of Applied Physiology., 83, 3, pp. 867-874, (1997); Havens K.L., Sigward S.M., Whole body mechanics differ among running and cutting maneuvers in skilled athletes, Gait & Posture., 42, 3, pp. 240-245, (2015); Andrews J.R., McLeod W.D., Ward T., Howard K., The cutting mechanism, The American Journal of Sports Medicine., 5, 3, pp. 111-121, (1977); Hanson A.M., Padua D.A., Troy Blackburn J., Prentice W.E., Hirth C.J., Muscle activation during side-step cutting maneuvers in male and female soccer athletes, Journal of Athletic Training., 43, 2, pp. 133-143, (2008); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clinical Biomechanics., 16, 5, pp. 438-445, (2001); Hunter J.P., Marshall R.N., McNair P.J., Relationships between ground reaction force impulse and kinematics of sprint-running acceleration, Journal of Applied Biomechanics., 21, 1, pp. 31-43, (2005); Jones P.A., Herrington L.C., Graham-Smith P., Technique determinants of knee joint loads during cutting in female soccer players, Human Movement Science., 42, pp. 203-211, (2015)","","","Public Library of Science","19326203","","POLNC","26930649","English","PLoS ONE","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-84961279470" "Hewett T.E.; Myer G.D.; Ford K.R.; Heidt Jr. R.S.; Colosimo A.J.; McLean S.G.; Van Den Bogert A.J.; Paterno M.V.; Succop P.","Hewett, Timothy E. (7005201943); Myer, Gregory D. (6701852696); Ford, Kevin R. (7102539333); Heidt Jr., Robert S. (6701562485); Colosimo, Angelo J. (7007060335); McLean, Scott G. (7102155685); Van Den Bogert, Antonie J. (35563133000); Paterno, Mark V. (6602774922); Succop, Paul (7005469665)","7005201943; 6701852696; 7102539333; 6701562485; 7007060335; 7102155685; 35563133000; 6602774922; 7005469665","Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study","2005","American Journal of Sports Medicine","33","4","","492","501","9","2482","10.1177/0363546504269591","https://www.scopus.com/inward/record.uri?eid=2-s2.0-15744368166&doi=10.1177%2f0363546504269591&partnerID=40&md5=217ad2ccc0a4f40b2ada0375ba890fea","Sports Medicine Biodynamics Center, Div. of Molec. Cardiovasc. Biology, Cincinnati Children's Hosp. Med. C., Cincinnati, OH, United States; University of Cincinnati, College of Medicine, Department of Orthopaedic Surgery, Cincinnati, OH, United States; Wellington Orthoped./Sports Med. C., Cincinnati, OH, United States; Department of Biomedical Engineering, Orthopaedic Research Center, Cleveland Clinic Foundation, Cleveland, OH, United States; Department of Environmental Health, University of Cincinnati, Cincinnati, OH, United States; Cincinnati Children's Hosp. Med. C., MLC 10001, Cincinnati, OH 45229, 3333 Burnet Avenue, United States","Hewett T.E., Sports Medicine Biodynamics Center, Div. of Molec. Cardiovasc. Biology, Cincinnati Children's Hosp. Med. C., Cincinnati, OH, United States, University of Cincinnati, College of Medicine, Department of Orthopaedic Surgery, Cincinnati, OH, United States, Cincinnati Children's Hosp. Med. C., MLC 10001, Cincinnati, OH 45229, 3333 Burnet Avenue, United States; Myer G.D., Sports Medicine Biodynamics Center, Div. of Molec. Cardiovasc. Biology, Cincinnati Children's Hosp. Med. C., Cincinnati, OH, United States; Ford K.R., Sports Medicine Biodynamics Center, Div. of Molec. Cardiovasc. Biology, Cincinnati Children's Hosp. Med. C., Cincinnati, OH, United States; Heidt Jr. R.S., Wellington Orthoped./Sports Med. C., Cincinnati, OH, United States; Colosimo A.J., University of Cincinnati, College of Medicine, Department of Orthopaedic Surgery, Cincinnati, OH, United States; McLean S.G., Department of Biomedical Engineering, Orthopaedic Research Center, Cleveland Clinic Foundation, Cleveland, OH, United States; Van Den Bogert A.J., Department of Biomedical Engineering, Orthopaedic Research Center, Cleveland Clinic Foundation, Cleveland, OH, United States; Paterno M.V., Sports Medicine Biodynamics Center, Div. of Molec. Cardiovasc. Biology, Cincinnati Children's Hosp. Med. C., Cincinnati, OH, United States; Succop P., Department of Environmental Health, University of Cincinnati, Cincinnati, OH, United States","Background: Female athletes participating in high-risk sports suffer anterior cruciate ligament injury at a 4- to 6-fold greater rate than do male athletes. Hypothesis: Prescreened female athletes with subsequent anterior cruciate ligament injury will demonstrate decreased neuromuscular control and increased valgus joint loading, predicting anterior cruciate ligament injury risk. Study Design: Cohort study; Level of evidence, 2. Methods: There were 205 female athletes in the high-risk sports of soccer, basketball, and Volleyball prospectively measured for neuromuscular control using 3-dimensional kinematics (joint angles) and joint loads using kinetics (joint moments) during a jump-landing task. Analysis of variance as well as linear and logistic regression were used to isolate predictors of risk in athletes who subsequently ruptured the anterior cruciate ligament. Results: Nine athletes had a confirmed anterior cruciate ligament rupture; these 9 had significantly different knee posture and loading compared to the 196 who did not have anterior cruciate ligament rupture. Knee abduction angle (P < .05) at landing was 8° greater in anterior cruciate ligament-injured than in uninjured athletes. Anterior cruciate ligament-injured athletes had a 2.5 times greater knee abduction moment (P < .001) and 20% higher ground reaction force (P < .05), whereas stance time was 16% shorter; hence, increased motion, force, and moments occurred more quickly. Knee abduction moment predicted anterior cruciate ligament injury status with 73% specificity and 78% sensitivity; dynamic valgus measures showed a predictive r2 of 0.88. Conclusion: Knee motion and knee loading during a landing task are predictors of anterior cruciate ligament injury risk in female athletes. Clinical Relevance: Female athletes with increased dynamic valgus and high abduction loads are at increased risk of anterior cruciate ligament injury. The methods developed may be used to monitor neuromuscular control of the knee joint and may help develop simpler measures of neuromuscular control that can be used to direct female athletes to more effective, targeted interventions. © 2005 American Orthopaedic Society for Sports Medicine.","Anterior cruciate ligament (ACL) injury; Dynamic valgus; Gender differences; Injury prevention; Knee joint load; Neuromuscular control","Adolescent; Anterior Cruciate Ligament; Basketball; Biomechanics; Epidemiologic Methods; Female; Humans; Kinesis; Knee Injuries; Knee Joint; Rotation; Rupture; Sex Factors; Soccer; Task Performance and Analysis; Weight-Bearing; accident prevention; adult; anterior cruciate ligament rupture; article; athlete; basketball; biomechanics; body posture; controlled study; equipment; female; force; human; jumping; kinematics; major clinical study; motion; neuromuscular function; priority journal; prospective study; risk assessment; sensitivity and specificity; sex difference; sport; standing; valgus knee; volleyball; weight bearing","Abdel-Aziz Y.I., Karara H.M., Direct linear transformation from comparator coordinates into object space coordinates in close-range photogrammetry, Symposium on Close-Range Photogrammetry, pp. 1-18, (1971); Arendt E.A., Bershadsky B., Agel J., Periodicity of noncontact anterior cruciate ligament injuries during the menstrual cycle, J Gend Specif Med, 5, pp. 19-26, (2002); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Med Sci Sports Exerc, 35, pp. 119-127, (2003); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1168-1175, (2001); Beynnon B., Slauterbeck J., Padua D., Et al., Update on ACL risk factors and prevention strategies in the female athlete, National Athletic Trainers' Association 52nd Annual Meeting and Clinical Symposia, (2001); Boden B.P., Dean G.S., Feagin Jr. J.A., Garrett Jr. W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Caraffa A., Cerulli G., Projetti M., Aisa G., Rizzo A., Prevention of anterior cruciate ligament injuries in soccer: A prospective controlled study of proprioceptive training, Knee Surg Sports Traumatol Arthrosc, 4, pp. 19-21, (1996); Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am J Sports Med, 30, pp. 261-267, (2002); Crenshaw S.J., Pollo F.E., Calton E.F., Effects of lateral-wedged insoles on kinetics at the knee, Clin Orthop, 375, pp. 185-192, (2000); Dufek J.S., Bates B.T., Biomechanical factors associated with injury during landing in jumping sports, Sports Med, 12, pp. 326-337, (1991); Ford K.R., Myer G.D., Hewett T.E., Reliability of dynamic knee motion in female athletes, American Society of Biomechanics Annual Meeting, (2003); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, pp. 1745-1750, (2003); Fukuda Y., Woo S.L., Loh J.C., Et al., A quantitative analysis of valgus torque on the ACL: A human cadaveric study, J Orthop Res, 21, pp. 1107-1112, (2003); Gerberich S.G., Luhmann S., Finke C., Et al., Analysis of severe injuries associated with volleyball activities, Phys Sportsmed, 15, pp. 75-79, (1987); Griffin L.Y., Prevention of Noncontact ACL Injuries, (2001); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, J Biomech Eng, 105, pp. 136-144, (1983); Harmon K.G., Dick R., The relationship of skill level to anterior cruciate ligament injury, Clin J Sport Med, 8, pp. 260-265, (1998); Hewett T.E., Neuromuscular and hormonal factors associated with knee injuries in female athletes: Strategies for intervention, Sports Med, 29, pp. 313-327, (2000); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes: A prospective study, Am J Sports Med, 27, pp. 699-706, (1999); Hewett T.E., Myer G.D., Ford K.R., Puberty decreases dynamic knee stability in female athletes: A potential mechanism for increased ACL injury risk, J Bone Joint Surg Am, 86 A, pp. 1601-1608, (2004); Hewett T.E., Paterno M.V., Myer G.D., Strategies for enhancing proprioception and neuromuscular control of the knee, Clin Orthop, 402, pp. 76-94, (2002); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes: Decreased impact forces and increased hamstring torques, Am J Sports Med, 24, pp. 765-773, (1996); Kanamori A., Woo S.L., Ma C.B., Et al., The forces in the anterior cruciate ligament and knee kinematics during a simulated pivot shift test: A human cadaveric study using robotic technology, Arthroscopy, 16, pp. 633-639, (2000); Kraemer W.J., Keuning M., Ratamess N.A., Et al., Resistance training combined with bench-step aerobics enhances women's health profile, Med Sci Sports Exerc, 33, pp. 259-269, (2001); Kraemer W.J., Mazzetti S.A., Nindl B.C., Et al., Effect of resistance training on women's strength/power and occupational performances, Med Sci Sports Exerc, 33, pp. 1011-1025, (2001); Lloyd D.G., Rationale for training programs to reduce anterior cruciate ligament injuries in Australian football, J Orthop Sports Phys Ther, 31, pp. 645-654, (2001); Lloyd D.G., Buchanan T.S., Strategies of muscular support of varus and valgus isometric loads at the human knee, J Biomech, 34, pp. 1257-1267, (2001); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, pp. 930-935, (1995); Markolf K.L., Graff-Redford A., Amstutz H.C., In vivo knee stability: A quantitative assessment using an instrumented clinical testing apparatus, J Bone Joint Surg Am, 60, pp. 664-674, (1978); McLean S.G., Lipfert S., Van Den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, pp. 1008-1016, (2004); McLean S.G., Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: Potential for injury in women, Med Sci Sports Exerc, 31, pp. 959-968, (1999); Myklebust G., Engebretsen L., Braekken I.H., Skjolberg A., Olsen O.E., Bahr R., Prevention of anterior cruciate ligament injuries in female team handball players: A prospective intervention study over three seasons, Clin J Sport Med, 13, pp. 71-78, (2003); 2002 High School Participation Survey, (2002); Neptune R.R., Wright I.C., Van Den Bogert A.J., Muscle coordination and function during cutting movements, Med Sci Sports Exerc, 31, pp. 294-302, (1999); Schipplein O.D., Andriacchi T.P., Interaction between active and passive knee stabilizers during level walking, J Orthop Res, 9, pp. 113-119, (1991); Scoville C.R., Williams G.N., Uhorchak J.M., Et al., Risk factors associated with anterior cruciate ligament injury, Proceedings of the 68th Annual Meeting of the American Academy of Orthopaedic Surgeons, (2001); Slauterbeck J.R., Hardy D.M., Sex hormones and knee ligament injuries in female athletes, Am J Med Sci, 322, pp. 196-199, (2001); Smith J., Laskowski E., The preparticipation physical examination: Mayo Clinic experience with 2,739 examinations, Mayo Clin Proc, 73, pp. 419-429, (1998); Steele J., Milburn P., Ground reaction forces on landing in netball, J Hum Mov Stud, 13, pp. 399-410, (1987); Tibone J.E., Antich T.J., Fanton G.S., Moynes D.R., Perry J., Functional analysis of anterior cruciate ligament instability, Am J Sports Med, 14, pp. 276-284, (1986); Toth A.P., Cordasco F.A., Anterior cruciate ligament injuries in the female athlete, J Gend Specif Med, 4, pp. 25-34, (2001); Tropp H., Odenrick P., Postural control in single-limb stance, J Orthop Res, 6, pp. 833-839, (1988); Winter D.A., Biomechanics and Motor Control of Human Movement, (1990); Wojtys E.M., Ashton-Miller J.A., Huston L.J., A gender-related difference in the contribution of the knee musculature to sagittal-plane shear stiffness in subjects with similar knee laxity, J Bone Joint Surg Am, 84, pp. 10-16, (2002); Wojtys E.M., Huston L.J., Schock H.J., Boylan J.P., Ashton-Miller J.A., Gender differences in muscular protection of the knee in torsion in size-matched athletes, J Bone Joint Surg Am, 85, pp. 782-789, (2003)","T.E. Hewett; Cincinnati Children's Hosp. Med. C., MLC 10001, Cincinnati, OH 45229, 3333 Burnet Avenue, United States; email: tim.hewett@chmcc.org","","","03635465","","AJSMD","15722287","English","Am. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-15744368166" "Della Villa F.; Buckthorpe M.; Grassi A.; Nabiuzzi A.; Tosarelli F.; Zaffagnini S.; Della Villa S.","Della Villa, Francesco (55780654000); Buckthorpe, Matthew (54783962800); Grassi, Alberto (57205264407); Nabiuzzi, Alberto (57217393167); Tosarelli, Filippo (57217386930); Zaffagnini, Stefano (7003438311); Della Villa, Stefano (8306317600)","55780654000; 54783962800; 57205264407; 57217393167; 57217386930; 7003438311; 8306317600","Systematic video analysis of ACL injuries in professional male football (soccer): injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases","2020","British journal of sports medicine","54","23","","1423","1432","9","199","10.1136/bjsports-2019-101247","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85087177074&doi=10.1136%2fbjsports-2019-101247&partnerID=40&md5=a3e53cc77c0816abf2542656afb16e1f","Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy; Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy; IIa Clinica Ortopedica e Traumatologica, Istituto Ortopedico Rizzoli Istituto di Ricovero e Cura a Carattere Scientifico, Bologna, Italy","Della Villa F., Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy; Buckthorpe M., Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy; Grassi A., IIa Clinica Ortopedica e Traumatologica, Istituto Ortopedico Rizzoli Istituto di Ricovero e Cura a Carattere Scientifico, Bologna, Italy; Nabiuzzi A., Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy; Tosarelli F., Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy; Zaffagnini S., IIa Clinica Ortopedica e Traumatologica, Istituto Ortopedico Rizzoli Istituto di Ricovero e Cura a Carattere Scientifico, Bologna, Italy; Della Villa S., Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy","BACKGROUND: A few small studies have reported on the mechanisms of ACL injury in professional male football. AIM: To describe the mechanisms, situational patterns and biomechanics (kinematics) of ACL injuries in professional male football matches. METHODS: We identified 148 consecutive ACL injuries across 10 seasons of professional Italian football. 134 (90%) injury videos were analysed for mechanism and situational pattern, while biomechanical analysis was possible in 107 cases. Three independent reviewers evaluated each video. ACL injury epidemiology (month), timing within the match and pitch location at the time of injury were also reported. RESULTS: 59 (44%) injuries were non-contact, 59 (44%) were indirect contact and 16 (12%) were direct contact. Players were frequently perturbed immediately prior to injury. We identified four main situational patterns for players who suffered a non-contact or an indirect contact injury: (1) pressing and tackling (n=55); (2) tackled (n=24); (3) regaining balance after kicking (n=19); and (4) landing from a jump (n=8). Knee valgus loading (n=83, 81%) was the dominant injury pattern across all four of these situational patterns (86%, 86%, 67% and 50%, respectively). 62% of the injuries occurred in the first half of the matches (p<0.01). Injuries peaked at the beginning of the season (September-October) and were also higher at the end of the season (March-May). CONCLUSIONS: 88% of ACL injuries occurred without direct knee contact, but indirect contact injuries were as frequent as non-contact injuries, underlying the importance of mechanical perturbation. The most common situational patterns were pressing, being tackled and kicking. © Author(s) (or their employer(s)) 2020. No commercial re-use. See rights and permissions. Published by BMJ.","anterior cruciate ligament; biomechanics; football; injury prevention; knee ACL","Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Competitive Behavior; Humans; Italy; Knee; Male; Seasons; Soccer; Time and Motion Studies; Video Recording; anterior cruciate ligament injury; biomechanics; competitive behavior; human; injury; Italy; knee; male; pathophysiology; physiology; season; soccer; task performance; videorecording","","","","NLM (Medline)","14730480","","","32561515","English","Br J Sports Med","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-85087177074" "Tropp H.; Odenrick P.","Tropp, Hans (7003970728); Odenrick, Per (6603540992)","7003970728; 6603540992","Postural control in single‐limb stance","1988","Journal of Orthopaedic Research","6","6","","833","839","6","213","10.1002/jor.1100060607","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0024110795&doi=10.1002%2fjor.1100060607&partnerID=40&md5=0f857223b6214fe4572c532ee9c5c24c","Departments of Clinical Neurophysiology, Orthopaedic Surgery, and Industrial Ergonomics, Linköping University, Linköping, Sweden","Tropp H., Departments of Clinical Neurophysiology, Orthopaedic Surgery, and Industrial Ergonomics, Linköping University, Linköping, Sweden; Odenrick P., Departments of Clinical Neurophysiology, Orthopaedic Surgery, and Industrial Ergonomics, Linköping University, Linköping, Sweden","Postural control in single‐limb stance has previously been shown to be impaired among soccer players with functional instability (FI) of the ankle joint. The aim of the present study was to further study the role of the ankle in postural control. A dynamic method was used involving optoelectronic movement recordings of body segments and force‐plate recordings of the reaction ground force. Surface electromyography was recorded for the peroneus longus muscle. Thirty physically active men were selected. Fifteen of them had FI of the ankle chosen for recording. The results show that different patterns exist for maintaining equilibrium in single‐limb stance. The ankle has a central role for postural corrections. The position of center of pressure is highly correlated to the position of the ankle and peroneal muscle activity. When the body was in disequilibrium, corrections were made at the hip. It is proposed that a change from an inverted pendulum model to a multisegmental chain model takes place when adjustments at the ankle joint no longer suffice to maintain postural control. The men with FI showed impaired postural control associated with increased upper segmental corrections. Copyright © 1988 Orthopaedic Research Society","Ankle; Equilibrium; Injury; Instability","Adolescent; Adult; Ankle Injuries; Human; Joint Instability; Leg; Male; Models, Biological; Posture; Recurrence; Sprains and Strains; Support, Non-U.S. Gov't; BIOMEDICAL ENGINEERING - Electromyography; ankle instability; biomechanics; body equilibrium; body posture; human; human experiment; imbalance; nonbiological model; normal human; ANKLE; EQUILIBRIUM; INJURY; INSTABILITY; POSTURAL CONTROL; STANCE; BIOMECHANICS","Balduini FC, Tetzlaff J, Historical perspectives on injuries of the ligaments of the ankle, Ankle and Foot Problems in the Athlete, pp. 3-12, (1982); Berger W, Dietz V, Hufschmidt A, Jung R, Mauritz K-H, Schmidtbleicher D, Haltung und Bewegung beim Menschen, (1984); Bosien WR, Staples OS, Russel SW, Residual instability following acute ankle sprains, J Bone Joint Surg [Am], 37, pp. 1237-1243, (1955); Dichgans J, Mauritz KH, Allum JH, Brandt T, Postural sway in normals and atactic patients: analysis of the stabilizing and destabilizing effects of vision, Agressologie, 17, pp. 15-24, (1976); Diener HC, Dichgans J, Bacher M, Gompf B, Quantification of postural sway in normals and patients with cerebellar disease, Electroencephalogr Clin Neurophysiol, 57, pp. 134-142, (1984); Eccles JC, Physiology of motor control in man, Appl Neurophysiol, 44, pp. 5-15, (1981); Freeman MAR, Dean MRE, Hanham IEF, The etiology and prevention of functional instability of the foot, J Bone Joint Surg [Br], 47, pp. 669-677, (1965); Granit R, The Basis of Motor Control, (1970); Grillner S, Locomotion in vertebrates: Central mechanisms and reflex interaction, Physiol Rev, 55, pp. 247-304, (1975); Horak FB, Nashner LM, Central programming of postural movements: Adaptation to altered support‐surface configurations, J Neurophysiol, 55, pp. 1369-1381, (1986); Inman VT, Mann RA, Biomechanics of the foot and ankle, Surgery of the Foot and Ankle, pp. 16-18, (1978); Kapteyn TS, Data processing of posturographic curves, Agressologie, 13, pp. 29-33, (1972); Koles ZJ, Castelein RD, The relationship between body sway and foot pressure in normal man, J Med Eng Tech, 4, pp. 279-285, (1980); Nashner LM, Black O, Wall C, Adaptation to altered support and visual conditions during stance: patients with vestibular deficits, J Neurosci, 2, pp. 536-544, (1982); Nashner LM, McCollum, The organization of postural movements. 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Orthop. Res.","Article","Final","","Scopus","2-s2.0-0024110795" "Myer G.D.; Ford K.R.; Di Stasi S.L.; Barber Foss K.D.; Micheli L.J.; Hewett T.E.","Myer, Gregory D. (6701852696); Ford, Kevin R. (7102539333); Di Stasi, Stephanie L. (57200949836); Barber Foss, Kim D. (6507308390); Micheli, Lyle J. (7006038761); Hewett, Timothy E. (7005201943)","6701852696; 7102539333; 57200949836; 6507308390; 7006038761; 7005201943","High knee abduction moments are common risk factors for patellofemoral pain (PFP) and anterior cruciate ligament (ACL) injury in girls: Is PFP itself a predictor for subsequent ACL injury?","2015","British Journal of Sports Medicine","49","2","","118","122","4","201","10.1136/bjsports-2013-092536","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84920641836&doi=10.1136%2fbjsports-2013-092536&partnerID=40&md5=98642599c147b3a86228038a782f9ba4","Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue; MLC 10001, Cincinnati, 45229, OH, United States; Department of Pediatrics, Department of Orthopaedic Surgery, University of Cincinnati, Cincinnati, OH, United States; Sports Health and Performance Institute, OSU Sports Medicine, Ohio State University Medical Center, Columbus, OH, United States; Micheli Center for Sports Injury Prevention, Waltham, MA, United States; Department of Physical Therapy, School of Health Sciences, High Point University, High Point, NC, United States; Division of Sports Medicine, Department of Orthopaedics, Boston Children's Hospital, Boston, MA, United States; Harvard Medical School, Boston, MA, United States; Department of Physiology, Department of Cell Biology, Family Medicine and of Orthopaedic Surgery and Biomedical Engineering, Ohio State University, Columbus, OH, United States","Myer G.D., Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue; MLC 10001, Cincinnati, 45229, OH, United States, Department of Pediatrics, Department of Orthopaedic Surgery, University of Cincinnati, Cincinnati, OH, United States, Sports Health and Performance Institute, OSU Sports Medicine, Ohio State University Medical Center, Columbus, OH, United States, Micheli Center for Sports Injury Prevention, Waltham, MA, United States; Ford K.R., Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue; MLC 10001, Cincinnati, 45229, OH, United States, Department of Pediatrics, Department of Orthopaedic Surgery, University of Cincinnati, Cincinnati, OH, United States, Department of Physical Therapy, School of Health Sciences, High Point University, High Point, NC, United States; Di Stasi S.L., Sports Health and Performance Institute, OSU Sports Medicine, Ohio State University Medical Center, Columbus, OH, United States; Barber Foss K.D., Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue; MLC 10001, Cincinnati, 45229, OH, United States; Micheli L.J., Micheli Center for Sports Injury Prevention, Waltham, MA, United States, Division of Sports Medicine, Department of Orthopaedics, Boston Children's Hospital, Boston, MA, United States, Harvard Medical School, Boston, MA, United States; Hewett T.E., Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue; MLC 10001, Cincinnati, 45229, OH, United States, Department of Pediatrics, Department of Orthopaedic Surgery, University of Cincinnati, Cincinnati, OH, United States, Sports Health and Performance Institute, OSU Sports Medicine, Ohio State University Medical Center, Columbus, OH, United States, Micheli Center for Sports Injury Prevention, Waltham, MA, United States, Department of Physiology, Department of Cell Biology, Family Medicine and of Orthopaedic Surgery and Biomedical Engineering, Ohio State University, Columbus, OH, United States","Background: Identifying risk factors for knee pain and anterior cruciate ligament (ACL) injury can be an important step in the injury prevention cycle. Objective: We evaluated two unique prospective cohorts with similar populations and methodologies to compare the incidence rates and risk factors associated with patellofemoral pain (PFP) and ACL injury. Methods: The 'PFP cohort' consisted of 240 middle and high school female athletes. They were evaluated by a physician and underwent anthropometric assessment, strength testing and three-dimensional landing biomechanical analyses prior to their basketball season. 145 of these athletes met inclusion for surveillance of incident (new) PFP by certified athletic trainers during their competitive season. The 'ACL cohort' included 205 high school female volleyball, soccer and basketball athletes who underwent the same anthropometric, strength and biomechanical assessment prior to their competitive season and were subsequently followed up for incidence of ACL injury. A one-way analysis of variance was used to evaluate potential group (incident PFP vs ACL injured) differences in anthropometrics, strength and landing biomechanics. Knee abduction moment (KAM) cut-scores that provided the maximal sensitivity and specificity for prediction of PFP or ACL injury risk were also compared between the cohorts. Results: KAM during landing above 15.4 Nm was associated with a 6.8% risk to develop PFP compared to a 2.9% risk if below the PFP risk threshold in our sample. Likewise, a KAM above 25.3 Nm was associated with a 6.8% risk for subsequent ACL injury compared to a 0.4% risk if below the established ACL risk threshold. The ACL-injured athletes initiated landing with a greater knee abduction angle and a reduced hamstrings-toquadriceps strength ratio relative to the incident PFP group. Also, when comparing across cohorts, the athletes who suffered ACL injury also had lower hamstring/quadriceps ratio than the players in the PFP sample ( p<0.05). Conclusions: In adolescent girls aged 13.3 years, >15 Nm of knee abduction load during landing is associated with greater likelihood of developing PFP. Also, in girls aged 16.1 years who land with >25 Nm of knee abduction load during landing are at increased risk for both PFP and ACL injury.","","Adolescent; Anterior Cruciate Ligament; Athletic Injuries; Basketball; Biomechanical Phenomena; Female; Humans; Knee Injuries; Knee Joint; Movement; Muscle, Skeletal; Patellofemoral Pain Syndrome; Prospective Studies; Risk Factors; adolescent; anterior cruciate ligament; Athletic Injuries; basketball; biomechanics; female; human; injuries; knee; Knee Injuries; movement (physiology); patellofemoral pain syndrome; pathophysiology; physiology; prospective study; risk factor; skeletal muscle","Heintjes E., Berger M., Bierma-Zeinstra S., Et al., Exercise Therapy For Patellofemoral Pain Syndrome, (2005); Louden J.K., Gajewski B., Goist-Foley H.L., Et al., The effectiveness of exercise in treating patellofemoral-pain syndrome, J Sport Rehab, 13, pp. 323-342, (2004); Natri A., Kannus P., Jarvinen M., Which factors predict the long-term outcome in chronic patellofemoral pain syndrome? 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J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84920641836" "Newman M.A.; Tarpenning K.M.; Marino F.E.","Newman, Mark A. (55684342700); Tarpenning, Kyle M. (6602679414); Marino, Frank E. (7101879615)","55684342700; 6602679414; 7101879615","Relationships between isokinetic knee strength, single-sprint performance, and repeated-sprint ability in football players","2004","Journal of Strength and Conditioning Research","18","4","","867","872","5","108","10.1519/13843.1","https://www.scopus.com/inward/record.uri?eid=2-s2.0-10344246688&doi=10.1519%2f13843.1&partnerID=40&md5=f1d55a0908418812f5f531954ac1c27e","School of Human Movement Studies, Charles Sturt University, Bathurst, NSW, Australia","Newman M.A., School of Human Movement Studies, Charles Sturt University, Bathurst, NSW, Australia; Tarpenning K.M., School of Human Movement Studies, Charles Sturt University, Bathurst, NSW, Australia; Marino F.E., School of Human Movement Studies, Charles Sturt University, Bathurst, NSW, Australia","Previous research has demonstrated that muscular strength of the knee extensors is related to the speed an athlete can produce during a single-sprint performance. Football players, as well as many other athletes on the field and the court, execute multiple sprints during the course of a match. The purpose of this study was to examine the relationships between leg strength, single-sprint speed, and repeated-sprint ability. Thirty-eight football players from 3 codes (soccer, rugby league, rugby union) completed a 12- x 20-m repeated-sprint protocol and were evaluated for peak isokinetic knee extension and flexion torque at 60°·s-1, 150°·s-1, and 24°·s-1. Although single-sprint performance correlated with peak extensor and flexor torque at all velocities, the strongest correlation was observed between relative knee extensor torque at 240°·s-1 and the initial acceleration phase (0-10 m) of the single-sprint performance (r = -0.714, p < 0.01). However, the data suggest that factors other than strength contribute to repeated-sprint ability. This finding provides new evidence in elucidating the relationship between strength and repeated-sprint performance.","Acceleration; Multiple-sprint sports; Speed endurance","Adult; Analysis of Variance; Biomechanics; Football; Humans; Knee Joint; Linear Models; Male; Muscle, Skeletal; Running; Soccer; Torque; adolescent; adult; article; controlled study; correlation analysis; follow up; football; human; human experiment; isokinetic exercise; knee function; normal human; rugby; sport; task performance; velocity","Abernethy P., Wilson G., Logan P., Strength and power assessment: Issues, controversies and challenges, Sports Med., 19, pp. 401-417, (1995); Alexander M.J.L., The relationship between muscle strength and sprint kinematics in elite sprinters, Can. J. Sport Sci., 14, pp. 148-157, (1989); Baker D., Nance S., The relationship between running speed and measure of strength and power in professional rugby league players, J. Strength Cond. Res., 13, pp. 230-235, (1999); Balsom P.D., Seger J.Y., Sjodin B., Ekblom B., Maximal-intensity intermittent exercise: Effect of recovery duration, Int. J. Sports Med., 13, pp. 528-533, (1992); Bangsbo J., The physiology of soccer with specific reference to intense intermittent exercise, Acta Physiol. Scand., 151, pp. 1-155, (1994); Bangsbo J., The physiology of intermittent activity in football, Science and Football III, pp. 43-53, (1997); Boulay M.R., Lortie G., Simoneau J.A., Hamel P., Leblanc C., Bouchard C., Specificity of aerobic and anaerobic work capacities and powers, Int. J. Sports Med., 6, pp. 325-328, (1985); Brozek J., Grande F., Anderson J.T., Keys A., Densitomeric analysis of body composition: Revision of some quantitative assumptions, Ann. N Y Acad. Sci., 110, (1963); Dawson B.T., Ackland T.R., Roberts C., Lawrance S.R., Repeated effort testing: The phosphate recovery test revisited, Sports Coaching, pp. 31-34, (1991); Dawson B.T., Fitzsimons M., Ward D., The relationship of repeated sprint ability to aerobic power and performance measures of anaerobic work capacity and power, Aust. J. Sci. Med. Sport, 25, pp. 88-93, (1993); Delecluse C., Coppenolle H.V., Willems E., Leeputte M.V., Diels R., Goris M., Influence of high resistance and high velocity training on sprinting performance, Med. Sci. Sports Exerc., 27, pp. 1203-1206, (1995); Deutsch M.U., Maw G.J., Reaburn P., Heart rate, blood lactate and kinematic data of elite colts (under-19) rugby union players during competition, J. Sports Sci., 16, pp. 561-570, (1998); Dowson M.N., Nevill M.E., Lakomy H.K., Nevill A.M., Hazeldine R.J., Modelling the relationship between isokinetic muscle strength and sprint running performance, J. Sports Sci., 16, pp. 257-265, (1998); Fitzsimons M., Dawson B., Ward D., Wilkinson A., Cycling and running tests of repeated sprint ability, Aust. J. Sci. Med. Sport, 25, pp. 82-87, (1993); Gabbett T.J., Physiological characteristics of junior and senior rugby league players, Br. J. Sports Med., 36, pp. 334-339, (2002); Gaitanos G.C., Williams C., Boobis L.H., Brooks S., Human muscle metabolism during intermittent maximal exercise, J. Appl. Phys., 75, pp. 712-719, (1993); Harris R.C., Edwards R.H.T., Hultman E., Nordesjo L.O., Nyland B., Sohlin D., The time course of phosphorylcreatine resynthesis during recovery of the quadriceps muscle in man, Pflugers Arch., 367, pp. 137-142, (1976); Jacobs I., Tesch P.A., Bar-Or O., Karlsson J., Dotan R., Lactate in human skeletal muscle after 10 and 30 s of supramaximal exercise, J. Appl. Phys., 55, pp. 365-367, (1983); Lohman T.G., Houtkooper L.H., Going S.B., Body fat measurment goes high-tech: Not all are created equal, ACSM Health Fitness J., 1, (1997); Mann R.V., A kinetic analysis of sprinting, Med. Sci. Sports Exerc., 13, pp. 325-328, (1981); McArdle W., Katch F.I., Katch V., Exercise Physiology: Energy, Nutrition, and Human Performance, (2001); Mero A., Force-time characteristics and running velocity of male sprinters during the acceleration phase of sprinting, Res. Q. Exerc. Sport, 59, pp. 94-98, (1988); Reilly T., Bangsbo J., Franks A., Anthropometric and physiological predispositions for elite soccer, J. Sports Sci., 18, pp. 669-683, (2000); Tumility D., Physiological characteristics of elite soccer players, Sports Med., 16, pp. 80-96, (1993); Wadley G., Le Rossignol P., The relationship between repeated sprint ability and the aerobic and anaerobic energy systems, J. Sci. Med. Sport, 1, pp. 100-110, (1998); Wilhite M.R., Cohen E.R., Wilhite S.C., Reliability of concentric and eccentric measurements of quadriceps performance using the KIN-COM dynamometer: The effect of testing order for three different speeds, J. Orthop. Sports Phys. Ther., 15, pp. 175-182, (1992); Williford H.N., Kirkpatrick J., Scharff-Olson M., Blessing D.L., Wang N.Z., Physical and performance characteristics of successful high school football players, Am. J. Sports Med., 22, pp. 859-862, (1994); Wrigley T.V., Correlations with athletic performance, Isokinetics in Human Performance, pp. 42-73, (2000); Young W., McLean B., Ardagna J., Relationship between strength qualities and sprinting performance, J. Sports Med. Phys. Fitness, 35, pp. 13-19, (1995)","F.E. Marino; School of Human Movement Studies, Charles Sturt University, Bathurst, NSW, Australia; email: fmarino@csu.edu.au","","","10648011","","","15574095","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-10344246688" "Chow J.Y.; Davids K.; Button C.; Koh M.","Chow, Jia Yi (12776077700); Davids, Keith (7003449117); Button, Chris (59046555500); Koh, Michael (7103399995)","12776077700; 7003449117; 59046555500; 7103399995","Coordination changes in a discrete multi-articular action as a function of practice","2008","Acta Psychologica","127","1","","163","176","13","78","10.1016/j.actpsy.2007.04.002","https://www.scopus.com/inward/record.uri?eid=2-s2.0-36849048735&doi=10.1016%2fj.actpsy.2007.04.002&partnerID=40&md5=79951c2145695a7897de6c5370ea4286","Physical Education and Sports Science, Nanyang Technological University, Singapore, 637616, 1 Nanyang Walk, Singapore; School of Human Movement Studies, Queensland University of Technology, Australia; School of Physical Education, University of Otago, New Zealand; School of Sports, Health and Leisure, Republic Polytechnic, Singapore","Chow J.Y., Physical Education and Sports Science, Nanyang Technological University, Singapore, 637616, 1 Nanyang Walk, Singapore; Davids K., School of Human Movement Studies, Queensland University of Technology, Australia; Button C., School of Physical Education, University of Otago, New Zealand; Koh M., School of Sports, Health and Leisure, Republic Polytechnic, Singapore","This study investigated how novices re-organized motor system degrees of freedom when practicing a multi-articular discrete kicking task. Four male participants practiced a soccer chipping task to seven different target positions over 12 sessions for 4 weeks. Data from each participant indicated changes in degrees of freedom involvement as a function of practice. Further, each participant showed a different progression of change in levels of joint involvement for hip, knee and ankle in the kicking limb. Cross-correlations between joints in the kicking limb also showed different pathways of coupling and de-coupling with practice. Performance outcome scores improved and variability of intra-limb coordination decreased as a consequence of practice for all participants. Angle-angle plots also showed qualitative changes in intra-limb coordination between early and late practice sessions. Evidence suggested that foot velocity at ball contact was functionally manipulated by participants when kicking to target positions with varying height and distance constraints. Referencing data to a model of learning [Newell, K. M. (1985). Coordination, control and skill. In: Goodman, D., Franks, I., & Wilberg, R.B. (Eds.), Differing perspectives in motor learning, memory, and control. Amsterdam: North-Holland, pp. 295-317] determined that progression through different stages of learning may not be sequential and could alternate between learning stages. The present study highlighted individual differences in acquisition of coordination and control of joint motion even under similar task constraints, showing how degeneracy in movement systems facilitates learning. © 2007 Elsevier B.V. All rights reserved.","Coordination; Degeneracy; Motor system degrees of freedom; Multi-articular discrete action; Stages of learning","Adult; Ankle Joint; Attention; Biomechanics; Hip Joint; Humans; Kinesthesis; Knee Joint; Male; Mental Recall; Orientation; Practice (Psychology); Psychomotor Performance; Psychophysiology; Reaction Time; Soccer; adult; ankle; article; attention; biomechanics; hip; human; kinesthesia; knee; learning; male; orientation; physiology; psychological aspect; psychomotor performance; psychophysiology; reaction time; recall; sport","Amblard B., Assaiante C., Lekhel H., Marchand A.R., A statistical approach to sensorimotor strategies: Conjugate cross-correlations, Journal of Motor Behavior, 26, 2, pp. 103-112, (1994); Anderson D.I., Sidaway B., Coordination changes associated with practice of a soccer kick, Research Quarterly for Exercise and Sport, 65, 2, pp. 93-99, (1994); Bernstein N.A., The control and regulation of movements, (1967); Berthouze L., Lungarella M., Motor skill acquisition under environmental perturbations: on the necessity of alternate freezing and freeing degrees of freedom, Adaptive Behavior, 12, pp. 47-64, (2004); Broderick M.P., Newell K.M., Coordination patterns in ball bouncing as a function of skill, Journal of Motor Behavior, 31, 2, pp. 165-188, (1999); Button C., MacLeod M., Sanders R., Coleman S., Examining movement variability in the basketball free throw action at different skill levels, Research Quarterly for Exercise and Sport, 74, 3, pp. 257-269, (2003); Chen H.H., Liu Y.T., Mayer-Kress G., Newell K.M., Learning the pedalo locomotion task, Journal of Motor Behavior, 37, pp. 247-256, (2005); Chow J.Y., Davids K., Button C., Koh M., Organization of motor system degrees of freedom during the Soccer Chip: An analysis of skilled performance, International Journal of Sport Psychology, 37, pp. 207-229, (2006); Davids K., Araujo D., Button C., Renshaw I., Degenerate brains, indeterminate behavior and representative tasks: Implications for experimental design in sport psychology research, Handbook of sport psychology. 3rd ed., (2007); Davids K., Button C., Araujo D., Renshaw I., Hristovski R., Movement models from sports provide representative task constraints for studying adaptive behavior in human movement systems, Adaptive Behavior, 14, pp. 73-94, (2006); Edelman G.M., Gally J., Degeneracy and complexity in biological systems, Proceedings of the National Academy of Sciences, 98, pp. 13763-13768, (2001); Faugloire E., Bardy B.G., Stoffregen T.A., Dynamics of learning new postural patterns: Influence on preexisting spontaneous behaviors, Journal of Motor Behavior, 38, 4, pp. 299-312, (2006); Hodges N.J., Hayes S., Horn R.R., Williams A.M., Changes in co-ordination, control and outcome as a result of extended practice on a novel motor skill, Ergonomics, 48, 11, pp. 1672-1685, (2005); Hong S.L., Newell K.M., Practice effects on local and global dynamics of the ski-simulator task, Experimental Brain Research, 169, pp. 350-360, (2006); Kudo K., Tsutsui S., Ishikura T., Ito T., Yamamoto Y., Compensatory coordination of release parameters in a throwing task, Journal of Motor Behavior, 32, 4, pp. 337-345, (2000); Mullineaux D.R., Bartlett R.M., Bennett S., Research design and statistics in biomechanics and motor control, Journal of Sports Sciences, 19, pp. 739-760, (2001); Newell K.M., Coordination, control and skill, Differing perspectives in motor learning, memory, and control, pp. 295-317, (1985); Newell K.M., Change in movement and skill: Learning, retention and transfer, Dexterity and its development, pp. 393-430, (1996); Newell K.M., Liu Y.T., Mayer-Kress G., Learning in the brain-computer interface: Insights about degrees of freedom and degeneracy in a landscape model of motor learning, Cognitive Processing, 6, pp. 37-42, (2005); Newell K.M., McDonald P.V., Learning to coordinate redundant biomechanical degrees of freedom, Interlimb coordination: Neural, dynamical and cognitive constraints, pp. 515-536, (1994); Newell K.M., Vaillancourt D.E., Dimensional change in motor learning, Human Movement Studies, 20, pp. 695-715, (2001); Nourrit D., Delignieres D., Caillou N., Deschamps T., Lauriot B., On discontinuities in motor learning: A longitudinal study of complex skill acquisition on a ski-simulator, Journal of Motor Behavior, 35, 2, pp. 151-170, (2003); Sidaway B., Heise G., Schoenfelder-Zohdi B., Quantifying the variability of angle-angle plots, Journal of Human Movement Studies, 29, pp. 181-197, (1995); Tseng Y.W., Scholz J.P., Schoner G., Goal-equivalent joint coordination in pointing: Affect of vision and arm dominance, Motor Control, 6, 2, pp. 183-207, (2002); Tseng Y.W., Scholz J.P., Schoner G., Hotchkiss L., Effect of accuracy constraint on joint coordination during pointing movements, Experimental Brain Research, 149, pp. 276-288, (2003); Vereijken B., Van Emmerik R.E.A., Bongaardt R., Beek W.J., Newell K.M., Changing coordinative structures in complex skill acquisition, Human Movement Science, 16, pp. 823-844, (1997); Williams A.M., Davids K., Williams J.G., Visual perception and action in sport, (1999)","J.Y. Chow; Physical Education and Sports Science, Nanyang Technological University, Singapore, 637616, 1 Nanyang Walk, Singapore; email: jiayi.chow@nie.edu.sg","","","00016918","","APSOA","17555698","English","Acta Psychol.","Article","Final","","Scopus","2-s2.0-36849048735" "Krosshaug T.; Steffen K.; Kristianslund E.; Nilstad A.; Mok K.-M.; Myklebust G.; Andersen T.E.; Holme I.; Engebretsen L.; Bahr R.","Krosshaug, Tron (55888189500); Steffen, Kathrin (18435250300); Kristianslund, Eirik (57645843600); Nilstad, Agnethe (36473805800); Mok, Kam-Ming (37070831800); Myklebust, Grethe (7003895328); Andersen, Thor Einar (7201524414); Holme, Ingar (7103397538); Engebretsen, Lars (7006820499); Bahr, Roald (7102647460)","55888189500; 18435250300; 57645843600; 36473805800; 37070831800; 7003895328; 7201524414; 7103397538; 7006820499; 7102647460","The Vertical Drop Jump Is a Poor Screening Test for ACL Injuries in Female Elite Soccer and Handball Players","2016","American Journal of Sports Medicine","44","4","","874","883","9","215","10.1177/0363546515625048","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84962199122&doi=10.1177%2f0363546515625048&partnerID=40&md5=b80e244e7b0368a250eb847ab1575920","Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PB 4014 Ullevaal Stadion, Oslo, N-0806, Norway","Krosshaug T., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PB 4014 Ullevaal Stadion, Oslo, N-0806, Norway; Steffen K., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PB 4014 Ullevaal Stadion, Oslo, N-0806, Norway; Kristianslund E., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PB 4014 Ullevaal Stadion, Oslo, N-0806, Norway; Nilstad A., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PB 4014 Ullevaal Stadion, Oslo, N-0806, Norway; Mok K.-M., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PB 4014 Ullevaal Stadion, Oslo, N-0806, Norway; Myklebust G., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PB 4014 Ullevaal Stadion, Oslo, N-0806, Norway; Andersen T.E., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PB 4014 Ullevaal Stadion, Oslo, N-0806, Norway; Holme I., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PB 4014 Ullevaal Stadion, Oslo, N-0806, Norway; Engebretsen L., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PB 4014 Ullevaal Stadion, Oslo, N-0806, Norway; Bahr R., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PB 4014 Ullevaal Stadion, Oslo, N-0806, Norway","Background: The evidence linking knee kinematics and kinetics during a vertical drop jump (VDJ) to anterior cruciate ligament (ACL) injury risk is restricted to a single small sample. Still, the VDJ test continues to be advocated for clinical screening purposes. Purpose: To test whether 5 selected kinematic and kinetic variables were associated with future ACL injuries in a large cohort of Norwegian female elite soccer and handball players. Furthermore, we wanted to assess whether the VDJ test can be recommended as a screening test to identify players with increased risk. Study Design: Cohort study; Level of evidence, 2. Methods: Elite female soccer and handball players participated in preseason screening tests from 2007 through 2014. The tests included marker-based 3-dimensional motion analysis of a drop-jump landing. We followed a predefined statistical protocol in which we included the following candidate risk factors in 5 separate logistic regression analyses, with new ACL injury as the outcome: (1) knee valgus angle at initial contact, (2) peak knee abduction moment, (3) peak knee flexion angle, (4) peak vertical ground-reaction force, and (5) medial knee displacement. Results: A total of 782 players were tested (age, 21 ± 4 years; height, 170 ± 7 cm; body mass, 67 ± 8 kg), of which 710 were included in the analyses. We registered 42 new noncontact ACL injuries, including 12 in previously ACL-injured players. Previous ACL injury (relative risk, 3.8; 95% CI, 2.1-7.1) and medial knee displacement (odds ratio, 1.40; 95% CI, 1.12-1.74 per 1-SD change) were associated with increased risk for injury. However, among the 643 players without previous injury, we found no association with medial knee displacement. A receiver operating characteristic curve analysis of medial knee displacement showed an area under the curve of 0.6, indicating a poor-to-failed combined sensitivity and specificity of the test, even when including previously injured players. Conclusion: Of the 5 risk factors considered, medial knee displacement was the only factor associated with increased risk for ACL. However, receiver operating characteristic curve analysis indicated a poor combined sensitivity and specificity when medial knee displacement was used as a screening test for predicting ACL injury. For players with no previous injury, none of the VDJ variables were associated with increased injury risk. Clinical Relevance: VDJ tests cannot predict ACL injuries in female elite soccer and handball players. © 2016 The Author(s).","anterior cruciate ligament; biomechanics; female; football; handball; screening; soccer; vertical drop jump","Adult; Anterior Cruciate Ligament Injuries; Athletes; Athletic Injuries; Cohort Studies; Exercise Test; Female; Humans; Mass Screening; Risk Assessment; Young Adult; adult; anterior cruciate ligament injury; athlete; Athletic Injuries; cohort analysis; exercise test; female; human; mass screening; risk assessment; young adult","Alentorn-Geli E., Mendiguchia J., Samuelsson K., Et al., Prevention of anterior cruciate ligament injuries in sports: Part I. 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International Society of Biomechanics, J Biomech, 35, 4, pp. 543-548, (2002); Yeadon M.R., The simulation of aerial movement - II. A mathematical inertia model of the human body, J Biomech, 23, 1, pp. 67-74, (1990); Zatsiorsky V., Seluyanov V., Matsui H., Kobayashi K., The mass and inertia characteristics of the main segments of the human body, Biomechanics VIII-B, pp. 1152-1159, (1983)","T. Krosshaug; Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, PB 4014 Ullevaal Stadion, N-0806, Norway; email: tron.krosshaug@nih.no","","SAGE Publications Inc.","03635465","","AJSMD","26867936","English","Am. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84962199122" "Mandelbaum B.R.; Silvers H.J.; Watanabe D.S.; Knarr J.F.; Thomas S.D.; Griffin L.Y.; Kirkendall D.T.; Garrett Jr. W.","Mandelbaum, Bert R. (7004262150); Silvers, Holly J. (6602624274); Watanabe, Diane S. (8579542600); Knarr, John F. (8078602100); Thomas, Stephen D. (55456102900); Griffin, Letha Y. (7102752855); Kirkendall, Donald T. (7003555207); Garrett Jr., William (7102162248)","7004262150; 6602624274; 8579542600; 8078602100; 55456102900; 7102752855; 7003555207; 7102162248","Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes: 2-Year follow-up","2005","American Journal of Sports Medicine","33","7","","1003","1010","7","890","10.1177/0363546504272261","https://www.scopus.com/inward/record.uri?eid=2-s2.0-20344367258&doi=10.1177%2f0363546504272261&partnerID=40&md5=5d83632f6213be51ada9898e577e31e4","Santa Monica Orthopaedic and Sports Medicine Research Foundation, Santa Monica, CA, United States; Peachtree Orthopaedic Clinic, Atlanta, GA, United States; VA National Center for Health Promotion and Disease Prevention, Durham, NC, United States; Duke University Medical Center, Durham, NC, United States; Santa Monica Orthopaedic and Sports Medicine Research Foundation, Santa Monica, CA 90404, 1301 Twentieth Street, United States","Mandelbaum B.R., Santa Monica Orthopaedic and Sports Medicine Research Foundation, Santa Monica, CA, United States; Silvers H.J., Santa Monica Orthopaedic and Sports Medicine Research Foundation, Santa Monica, CA, United States, Santa Monica Orthopaedic and Sports Medicine Research Foundation, Santa Monica, CA 90404, 1301 Twentieth Street, United States; Watanabe D.S., Santa Monica Orthopaedic and Sports Medicine Research Foundation, Santa Monica, CA, United States; Knarr J.F., Santa Monica Orthopaedic and Sports Medicine Research Foundation, Santa Monica, CA, United States; Thomas S.D., Santa Monica Orthopaedic and Sports Medicine Research Foundation, Santa Monica, CA, United States; Griffin L.Y., Peachtree Orthopaedic Clinic, Atlanta, GA, United States; Kirkendall D.T., VA National Center for Health Promotion and Disease Prevention, Durham, NC, United States; Garrett Jr. W., Duke University Medical Center, Durham, NC, United States","Background: Among female athletes it has not been established whether a neuromuscular and proprioceptive sports-specific training program will consistently reduce the incidence of anterior cruciate ligament injuries. Purpose: To determine whether a neuromuscular and proprioceptive performance program was effective in decreasing the incidence of anterior cruciate ligament injury within a select population of competitive female youth soccer players. Study Design: Cohort study; Level of evidence, 2. Methods: In 2000, 1041 female subjects from 52 teams received a sports-specific training intervention in a prospective nonrandomized trial. The control group consisted of the remaining 1905 female soccer players from 95 teams participating in the same league who were age and skill matched. In the 2001 season, 844 female athletes from 45 teams were enrolled in the study, with 1913 female athletes (from 112 teams) serving as the age-and skill-matched controls. All subjects were female soccer players between the ages of 14 and 18 and participated in either their traditional warm-up or a sports-specific training intervention before athletic activity over a 2-year period. The intervention consisted of education, stretching, strengthening, plyometrics, and sports-specific agility drills designed to replace the traditional warm-up. Results: During the 2000 season, there was an 88% decrease in anterior cruciate ligament injury in the enrolled subjects compared to the control group. In year 2, during the 2001 season, there was a 74% reduction in anterior cruciate ligament tears in the intervention group compared to the age- and skill-matched controls. Conclusion: Using a neuromuscular training program may have a direct benefit in decreasing the number of anterior cruciate ligament injuries in female soccer players. © 2005 American Orthopaedic Society for Sports Medicine.","Anterior cruciate ligament (ACL); Prevention; Soccer","Adolescent; Anterior Cruciate Ligament; Athletic Injuries; Exercise; Female; Humans; Knee Injuries; Proprioception; Prospective Studies; Soccer; accident prevention; adolescent; adult; anterior cruciate ligament; article; athlete; biomechanics; female; follow up; human; human experiment; incidence; knee injury; ligament injury; muscle strength; neuromuscular function; normal human; priority journal; proprioception; sport injury; training","Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer: NCAA data and review of literature, Am J Sports Med, 23, pp. 694-701, (1995); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1168-1175, (2001); 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Slauterbeck J.R., Narayan R.S., Slevenger C., Et al., Effects of estrogen level on the tensile properties of the rabbit anterior cruciate ligament, 43rd Meeting of the Orthopaedic Research Society, (1997); Torg J.S., Quedenfeld T.C., Landau S., The shoe-interface and its relationship to football knee injuries, J Sports Med, 2, pp. 261-269, (1974); Wojtys E.M., Huston U., Lindenfeld T.N., Hewett T.E., Greenfield M.L., Association between the menstrual cycle and anterior cruciate ligament injuries in female athletes, Am J Sports Med, 26, pp. 614-619, (1998)","H.J. Silvers; Santa Monica Orthopaedic and Sports Medicine Research Foundation, Santa Monica, CA 90404, 1301 Twentieth Street, United States; email: hollysilverspt@aol.com","","","03635465","","AJSMD","15888716","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-20344367258" "Mendiguchia J.; Edouard P.; Samozino P.; Brughelli M.; Cross M.; Ross A.; Gill N.; Morin J.B.","Mendiguchia, J. (16239420700); Edouard, P. (16506291300); Samozino, P. (14024773800); Brughelli, M. (17433572900); Cross, M. (56323264000); Ross, A. (56049191100); Gill, N. (56962787400); Morin, J.B. (55917329600)","16239420700; 16506291300; 14024773800; 17433572900; 56323264000; 56049191100; 56962787400; 55917329600","Field monitoring of sprinting power–force–velocity profile before, during and after hamstring injury: two case reports","2016","Journal of Sports Sciences","34","6","","535","541","6","80","10.1080/02640414.2015.1122207","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955195912&doi=10.1080%2f02640414.2015.1122207&partnerID=40&md5=6ab634f51b028dfec1d7ce0d0951aaef","Department of Physical Therapy, Zentrum Rehabilitation and Performance Center, Pamplona, Spain; Laboratory of Exercise Physiology (LPE EA 4338), University of Lyon, Saint Etienne, France; Department of Clinical and Exercise Physiology, Sports Medicine Unity, University Hospital of Saint-Etienne, Saint-Etienne, France; Laboratory of Exercise Physiology (EA 4338), University of Savoy Mont Blanc, Le Bourget-du-Lac, France; Sports Performance Research Institute New Zealand (SPRINZ), Auckland University of Technology, Auckland, New Zealand; New Zealand Rugby Union, Wellington, New Zealand; Laboratory of Human Motricity, Education Sport and Health, University of Nice Sophia Antipolis, Nice, France","Mendiguchia J., Department of Physical Therapy, Zentrum Rehabilitation and Performance Center, Pamplona, Spain; Edouard P., Laboratory of Exercise Physiology (LPE EA 4338), University of Lyon, Saint Etienne, France, Department of Clinical and Exercise Physiology, Sports Medicine Unity, University Hospital of Saint-Etienne, Saint-Etienne, France; Samozino P., Laboratory of Exercise Physiology (EA 4338), University of Savoy Mont Blanc, Le Bourget-du-Lac, France; Brughelli M., Sports Performance Research Institute New Zealand (SPRINZ), Auckland University of Technology, Auckland, New Zealand; Cross M., Sports Performance Research Institute New Zealand (SPRINZ), Auckland University of Technology, Auckland, New Zealand; Ross A., Sports Performance Research Institute New Zealand (SPRINZ), Auckland University of Technology, Auckland, New Zealand; Gill N., Sports Performance Research Institute New Zealand (SPRINZ), Auckland University of Technology, Auckland, New Zealand, New Zealand Rugby Union, Wellington, New Zealand; Morin J.B., Laboratory of Human Motricity, Education Sport and Health, University of Nice Sophia Antipolis, Nice, France","Very little is currently known about the effects of acute hamstring injury on over-ground sprinting mechanics. The aim of this research was to describe changes in power–force–velocity properties of sprinting in two injury case studies related to hamstring strain management: Case 1: during a repeated sprint task (10 sprints of 40 m) when an injury occurred (5th sprint) in a professional rugby player; and Case 2: prior to (8 days) and after (33 days) an acute hamstring injury in a professional soccer player. A sports radar system was used to measure instantaneous velocity–time data, from which individual mechanical profiles were derived using a recently validated method based on a macroscopic biomechanical model. Variables of interest included: maximum theoretical velocity (V0) and horizontal force (FH0), slope of the force–velocity (F–v) relationship, maximal power, and split times over 5 and 20 m. For Case 1, during the injury sprint (sprint 5), there was a clear change in the F–v profile with a 14% greater value of FH0 (7.6–8.7 N/kg) and a 6% decrease in V0 (10.1 to 9.5 m/s). For Case 2, at return to sport, the F–v profile clearly changed with a 20.5% lower value of FH0 (8.3 vs. 6.6 N/kg) and no change in V0. The results suggest that the capability to produce horizontal force at low speed (FH0) (i.e. first metres of the acceleration phase) is altered both before and after return to sport from a hamstring injury in these two elite athletes with little or no change of maximal velocity capabilities (V0), as evidenced in on-field conditions. Practitioners should consider regularly monitoring horizontal force production during sprint running both from a performance and injury prevention perspective. © 2015 Taylor & Francis.","Hamstring strain; horizontal force; injury prevention; sprint mechanics","Acceleration; Adult; Biomechanical Phenomena; Football; Humans; Male; Muscle, Skeletal; Return to Sport; Running; Soccer; Thigh; Young Adult; acceleration; adult; biomechanics; case report; football; human; injuries; male; physiology; return to sport; running; skeletal muscle; soccer; thigh; young adult","Arnason A., Gudmundsson A., Dahl H.A., Johannsson E., Soccer injuries in Iceland, Scandinavian Journal of Medicine & Science in Sport, 6, 1, pp. 40-45, (1996); Belli A., Kyrolainen H., Komi P.V., Moment and power of lower limb joints in running, International Journal of Sports Medicine, 23, 2, pp. 136-141, (2002); Brooks J.H., Fuller C.W., Kemp S.P., Reddin D.B., Incidence, risk, and prevention of hamstring muscle injuries in professional rugby union, American Journal of Sports Medicine, 34, 8, pp. 1297-1306, (2006); Brughelli M., Cronin J., Mendiguchia J., Kinsella D., Nosaka K., Contralateral leg deficits in kinetic and kinematic variables during running in Australian rules football players with previous hamstring injuries, Journal of Strength and Conditioning Research, 24, 9, pp. 2539-2544, (2010); Cavagna G.A., Komarek L., Mazzoleni S., The mechanics of sprint running, TheJournal of Physiology, 217, 3, pp. 709-721, (1971); Chumanov E.S., Schache A.G., Heiderscheit B.C., Thelen D.G., Hamstrings are most susceptible to injury during the late swing phase of sprinting, British Journal of Sports Medicine, 46, 2, (2012); Cormie P., McGuigan M.R., Newton R.U., Developing maximal neuromuscular power: Part 2 – training considerations for improving maximal power production, Sports Medicine, 41, 2, pp. 125-146, (2011); di Prampero P.E., Fusi S., Sepulcri L., Morin J.B., Belli A., Antonutto G., Sprint running: A new energetic approach, Journal of experimental Biology, 208, pp. 2809-2816, (2005); Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: The UEFA injury study, British Journal of Sports Medicine, 45, 7, pp. 553-558, (2011); Furusawa K., Hill A.V., Parkinson J.L., The dynamics of “sprint” running, Proceedings of the Royal Society B: Biological Sciences, 102, 713, pp. 29-42, (1927); Heiderscheit B.C., Hoerth D.M., Chumanov E.S., Swanson S.C., Thelen B.J., Thelen D.G., Identifying the time of occurrence of a hamstring strain injury during treadmill running: A case study, Clinical Biomechanics (Bristol, Avon), 20, 10, pp. 1072-1078, (2005); Heiderscheit B.C., Sherry M.A., Silder A., Chumanov E.S., Thelen D.G., Hamstring strain injuries: Recommendations for diagnosis, rehabilitation, and injury prevention, Journal of Orthopaedic & Sports Physical Therapy, 40, 2, pp. 67-81, (2010); Henry F.M., Trafton J.R., The velocity curve of sprint running with some observations on the muscle viscosity factor, Research Quarterly for Exercise and Sport, 25, pp. 164-177, (1951); Hickey J., Shield A.J., Williams M.D., Opar D.A., The financial cost of hamstring strain injuries in the Australian football league, British Journal of Sports Medicine, 48, 8, pp. 729-730, (2014); Jacobs R., van Ingen Schenau G.J., Intermuscular coordination in a sprint push-off, Journal of Biomechanics, 25, 9, pp. 953-965, (1992); Jaskolska A., Goossens P., Veenstra B., Jaskolski A., Skinner J.S., Treadmill measurement of the force–velocity relationship and power output in subjects with different maximal running velocities, Sports Medicine Training & Rehabilitation, 8, 4, pp. 347-358, (1999); Lee M.J., Reid S.L., Elliott B.C., Lloyd D.G., Running biomechanics and lower limb strength associated with prior hamstring injury, Medicine & Science in Sports & Exercise, 41, 10, pp. 1942-1951, (2009); Mann R.A., Hagy J., Biomechanics of walking, running, and sprinting, TheAmerican Journal of Sports Medicine, 8, 5, pp. 345-350, (1980); Mendiguchia J., Samozino P., Martinez-Ruiz E., Brughelli M., Schmikli S., Morin J.-B., Mendez-Villanueva A., Progression of mechanical properties during on-field sprint running after returning to sports from a hamstring muscle injury in soccer players, International Journal of Sports Medicine, 35, 8, pp. 690-695, (2014); Morin J.-B., Edouard P., Samozino P., Technical ability of force application as a determinant factor of sprint performance, Medicine & Science in Sports & Exercise, 43, 9, pp. 1680-1688, (2011); Morin J.-B., Samozino P., Edouard P., Tomazin K., Effect of fatigue on force production and force application technique during repeated sprints, Journal of Biomechanics, 44, 15, pp. 2719-2723, (2011); Orchard J.W., Hamstrings are most susceptible to injury during the early stance phase of sprinting, British Journal of Sports Medicine, 46, 2, pp. 88-89, (2012); Samozino P., Morin J.B., Dorel S., Slawinski J., Peyrot N., Saez De Villarreal E., Morin J.B., A simple method for measuring power, force and velocity properties of sprint running, Scandinavian Journal of Medicine & Science in Sport, (2015); Sanfilippo J.L., Silder A., Sherry M.A., Tuite M.J., Heiderscheit B.C., Hamstring strength and morphology progression after return to sport from injury, Medicine & Science in Sports & Exercise, 45, 3, pp. 448-454, (2013); Schache A.G., Dorn T.W., Blanch P.D., Brown N.A., Pandy M.G., Mechanics of the human hamstring muscles during sprinting, Medicine and Science in Sports and Exercise, 44, 4, pp. 647-658, (2012); Sugiura Y., Saito T., Sakuraba K., Sakuma K., Suzuki E., Strength deficits identified with concentric action of the hip extensors and eccentric action of the hamstrings predispose to hamstring injury in elite sprinters, Journal of Orthopaedic & Sports Physical Therapy, 38, 8, pp. 457-464, (2008); Warren G.L., Ingalls C.P., Lowe D.A., Armstrong R.B., What mechanisms contribute to the strength loss that occurs during and in the recovery from skeletal muscle injury?, Journal of Orthopaedic & Sports Physical Therapy, 32, 2, pp. 58-64, (2002); Weyand P.G., Sternlight D.B., Bellizzi M.J., Wright S., Faster top running speeds are achieved with greater ground forces not more rapid leg movements, Journal of Applied Physiology, 1985, 5, pp. 1991-1999, (2000); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., The Football Association Medical Research Programme: An audit of injuries in professional football – analysis of hamstring injuries, British Journal of Sports Medicine, 38, 1, pp. 36-41, (2004)","J. Mendiguchia; Department of Physical Therapy, Zentrum Rehabilitation and Performance Center, Pamplona, Spain; email: jurdan24@hotmail.com","","Routledge","02640414","","JSSCE","26648237","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-84955195912" "Press J.N.; Rowson S.","Press, Jaclyn N. (57185194100); Rowson, Steven (6603854147)","57185194100; 6603854147","Quantifying head impact exposure in collegiate women's soccer","2017","Clinical Journal of Sport Medicine","27","2","","104","110","6","116","10.1097/JSM.0000000000000313","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961223883&doi=10.1097%2fJSM.0000000000000313&partnerID=40&md5=38555959ac855ae832624407e6b3cec5","Department of Biomedical Engineering and Mechanics, Virginia Tech, 325 Stanger St., Blacksburg, 24061, VA, United States","Press J.N., Department of Biomedical Engineering and Mechanics, Virginia Tech, 325 Stanger St., Blacksburg, 24061, VA, United States; Rowson S., Department of Biomedical Engineering and Mechanics, Virginia Tech, 325 Stanger St., Blacksburg, 24061, VA, United States","Objective: The aim of this study was to quantify head impact exposure for a collegiate women's soccer team over the course of the 2014 season. Design: Observational and prospective study. Setting: Virginia Tech women's soccer games and practices. Participants: Twenty-six collegiate level women's soccer players with a mean player age of 19 ± 1. Interventions: Participating players were instrumented with head impact sensors for biomechanical analysis. Video recordings of each event were used to manually verify each impact sustained. Main Outcome Measures: Head impact counts by player position and impact situation. Results: The sensors collected data from a total of 17 865 accelerative events, 8999 of which were classified as head impacts. Of these, a total of 1703 impacts were positively identified (19% of total real impacts recorded by sensor), 90% of which were associated with heading the ball. The average number of impacts per player per practice or game was 1.86 ± 1.42. Exposure to head impact varied by player position. Conclusions: Head impact exposure was quantified through 2 different methods, which illustrated the challenges associated with autonomously collecting acceleration data with head impact sensors. Users of head impact data must exercise caution when interpreting on-field head impact sensor data. © 2016 Wolters Kluwer Health, Inc.","acceleration; concussion; football; frequency; gender; sensor","Adolescent; Athletic Injuries; Female; Head Injuries, Closed; Humans; Prospective Studies; Soccer; Virginia; Young Adult; accelerometer; adult; Article; biomechanics; college student; female; head impact sensor; head injury; human; institutional review; long term exposure; measurement error; observational study; priority journal; prospective study; seasonal variation; sensor; soccer player; sport injury; adolescent; Athletic Injuries; Head Injuries, Closed; injuries; soccer; Virginia; young adult","Kunz M., Big Count. FIFA Magazine, 6, (2007); Delany J.S., Lacroix V.J., Leclerc S., Et al., Concussions among university football and soccer players, Clin J Sport Med., 12, (2002); Fuller C.W., Junge A., Dvorak J., A six year prospective study of the incidence and causes of head and neck injuries in international football, Br J Sports Med., 39, SUPPL1, pp. i3-i9, (2005); Matser J.T., Kessels A.G., Jordan B.D., Et al., Chronic traumatic brain injury in professional soccer players, Neurology., 51, pp. 791-796, (1998); Janda D.H., Bir C.A., Cheney A.L., An evaluation of the cumulative concussive effect of soccer heading in the youth population, Inj Control Saf Promot., 9, pp. 25-31, (2002); Putukian M., Echemendia R.J., Mackin S., The acute neuropsychological effects of heading in soccer: A pilot study, Clin J Sport Med., 10, pp. 104-109, (2000); Tysvaer A.T., Head and neck injuries in soccer Impact of minor trauma, Sports Med., 14, pp. 200-213, (1992); Guskiewicz K.M., No evidence of impaired neurocognitive performance in collegiate soccer players, Am J Sports Med., 30, (2002); Funk J.R., Cormier J.M., Bain C.E., Et al., Head and neck loading in everyday and vigorous activities, Ann Biomed Eng., 39, pp. 766-776, (2011); Tierney R.T., Higgins M., Caswell S.V., Et al., Sex differences in head acceleration during heading while wearing soccer headgear, J Athl Train., 43, pp. 578-584, (2008); Queen R.M., Weinhold P.S., Kirkendall D.T., Et al., Theoretical study of the effect of ball properties on impact force in soccer heading, Med Sci Sports Exerc., 35, pp. 2069-2076, (2003); Naunheim R.S., Standeven J., Richter C., Et al., Comparison of impact data in hockey, football, and soccer, J Trauma., 48, pp. 938-941, (2000); Hanlon E.M., Bir C.A., Real-Time head acceleration measurement in girls youth soccer, Med Sci Sports Exerc., 44, pp. 1102-1108, (2012); Cobb B.R., Urban J.E., Davenport E.M., Et al., Head impact exposure in youth football: Elementary school ages 9-12 years and the effect of practice structure, Ann Biomed Eng., 41, pp. 2463-2473, (2013); Daniel R.W., Rowson S., Duma S.M., Head impact exposure in youth football: Middle school ages 12-14 years, J Biomech Eng., 136, (2014); Young T.J., Daniel R.W., Rowson S., Et al., Head impact exposure in youth football: Elementary school ages 7-8 years and the effect of returning players, Clin J Sport Med., 24, pp. 416-421, (2014); Duma S.M., Rowson S., Every Newton Hertz a macro to micro approach to investigating brain injury, Conf Proc IEEE Eng Med Biol Soc., 2009, pp. 1123-1126, (2009); Naunheim R.S., Ryden A., Standeven J., Et al., Does soccer headgear attenuate the impact when heading a soccer ball?, Acad Emerg Med., 10, pp. 85-90, (2003); Naunheim R.S., Bayly P.V., Standeven J., Et al., Linear and angular head accelerations during heading of a soccer ball, Med Sci Sports Exerc., 35, pp. 1406-1412, (2003); Hanlon E., Bir C., Validation of a wireless head acceleration measurement system for use in soccer play, J Appl Biomech., 26, pp. 424-431, (2010); Rowson S., Duma S.M., Brain injury prediction: Assessing the combined probability of concussion using linear and rotational head acceleration, Ann Biomed Eng., 41, pp. 873-882, (2013); Rowson B., Rowson S., Duma S.M., Hockey STAR a methodology for assessing the biomechanical performance of hockey helmets, Ann Biomed Eng., 43, pp. 2429-2443, (2015); Margulies S.S., Thibault L.E., A proposed tolerance criterion for diffuse axonal injury in man, J Biomech., 25, pp. 917-923, (1992); Duma S., Rowson S., The Biomechanics of Concussion: 60 Years of Experimental Research, pp. 115-137, (2014); Rowson S., Duma S.M., The Virginia Tech response, Ann Biomed Eng., 40, pp. 2512-2518, (2012); Rowson S., Duma S.M., Greenwald R.M., Et al., Can helmet design reduce the risk of concussion in football?, J Neurosurg., 120, pp. 919-922, (2014); Rowson S., Duma S.M., Beckwith J.G., Et al., Rotational head kinematics in football impacts: An injury risk function for concussion, Ann Biomed Eng., 40, pp. 1-13, (2012)","S. Rowson; Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, 325 Stanger St., 24061, United States; email: rowson@vt.edu","","Lippincott Williams and Wilkins","1050642X","","CJSME","26978008","English","Clin. J. Sport Med.","Article","Final","","Scopus","2-s2.0-84961223883" "Mallo J.; Navarro E.; Aranda J.M.G.; Helsen W.","Mallo, Javier (23992960900); Navarro, Enrique (24449528700); Aranda, Jose María Garcia (27171752000); Helsen, Werner (7003789254)","23992960900; 24449528700; 27171752000; 7003789254","Activity profile of top-class association football referees in relation to fitness-test performance and match standard","2009","Journal of Sports Sciences","27","1","","9","17","8","77","10.1080/02640410802298227","https://www.scopus.com/inward/record.uri?eid=2-s2.0-58149122725&doi=10.1080%2f02640410802298227&partnerID=40&md5=d955c4ca0659ec465c296b1493fa3d95","Faculty of Physical Activity and Sport Science, Politechnical University of Madrid, Madrid, Spain; FIFA, Zurich, Switzerland; Department of Biomedical Kinesiology, Katholieke Universiteit Leuven, Heverlee, Leuven, Belgium","Mallo J., Faculty of Physical Activity and Sport Science, Politechnical University of Madrid, Madrid, Spain; Navarro E., Faculty of Physical Activity and Sport Science, Politechnical University of Madrid, Madrid, Spain; Aranda J.M.G., FIFA, Zurich, Switzerland; Helsen W., Department of Biomedical Kinesiology, Katholieke Universiteit Leuven, Heverlee, Leuven, Belgium","The aim of this study was to examine the kinematic activity profiles, cardiovascular responses and physical fitness of top-class football referees (n = 11) during the FIFA Confederations Cup 2005. Computerised match-analyses (n = 9) were performed with a two-dimensional photogrammetric video system, and the cardiovascular demand imposed on the referees (n = 12) was measured using heart rate recordings. Total distance covered was 10,218, s = 643 m of which 3531, s = 510 m was covered at high intensities (> 3.6 m · s-1). Both total distance covered (r2 = 0.59; P = 0.02) and high-intensity activities (r2 = 0.44; P = 0.05) were related to the distance covered by the ball in the same match. The referees ran at high speed 37% further (P = 0.01) in the actual tournament than during under-17 top-level officiating. After the 5-min interval during which high-speed running peaked, in the following 5 min the performance was reduced by 19% (P = 0.01) in relation to the mean of the game. Mean heart rate was 161, s = 9 b · min-1 (86, s = 3% of maximal heart rate (HRmax)). Mean heart rate (expressed as percentage of HRmax) was related in part (r2 = 0.36; P < 0.01) to the number of high-intensity activities performed in the same 5-min interval. The results of this study show that: (1) kinematic activity profiles of top-class referees can be influenced by the distance covered by the ball; (2) the amount of high-speed running (>5 m · s-1) best describes the physical performance of referees; (3) heart rate recording can be a useful tool to determine the most intense periods of a match and (4) the new fitness tests adopted by FIFA were poor predictors of match activities.","2D biomechanical analysis; Heart rate; High-intensity activities; Physical performance","Adult; Athletic Performance; Biomechanics; Exercise Tolerance; Football; Heart Rate; Humans; Movement; Photogrammetry; Physical Fitness; Running; adult; article; biomechanics; cardiovascular response; controlled study; fitness; football; heart rate; human; human experiment; kinematics; normal human; photography; physical activity; physical capacity; physical performance; running","Abdel-Aziz Y.I., Karara H.M., Direct linear transformation from comparator coordinates into space coordinates in close range photogrammetry, Proceedings of the Symposium on Close Range Photogrammetry, pp. 1-18, (1971); Achten J., Jeukendrup A., Heart rate monitoring: Applications and limitations, Sports Medicine, 33, pp. 517-538, (2003); Allard P., Blanchi J.P., Aissaqui R., Bases of three-dimensional reconstruction, Three Dimensional Analysis of Human Movement, pp. 19-40, (1995); Bangsbo J., The physiology of soccer-with special reference to intense intermittent exercise, Acta Physiologica Scandinavica, 151, pp. 1-156, (1994); Bangsbo J., Norregaard L., Thorso F., Activity profile of competition soccer, Canadian Journal of Sports Science, 16, pp. 110-116, (1991); Castagna C., Abt G., Intermatch variation of match activity in elite Italian soccer referees, Journal of Strength and Conditioning Research, 17, pp. 388-392, (2003); Castagna C., D'Ottavio S., Effect of maximal aerobic power on match performance in elite soccer referees, Journal of Strength and Conditioning Research, 15, pp. 420-425, (2001); Castagna C., Abt G., D'Ottavio S., Relation between fitness tests and match performance in elite Italian soccer referees, Journal of Strength and Conditioning Research, 16, pp. 231-235, (2002); Castagna C., Abt G., D'Ottavio S., The relationship between blood lactate thresholds and match performance in elite soccer referees, Journal of Strength and Conditioning Research, 16, pp. 623-627, (2002); Castagna C., Abt G., D'Ottavio S., Activity profile of international-level soccer referees during competitive matches, Journal of Strength and Conditioning Research, 18, pp. 486-490, (2004); Castagna C., Abt G., D'Ottavio S., Competitive-level differences in Yo-yo intermittent recovery and twelve minute run test performance in soccer referees, Journal of Strength and Conditioning Research, 19, pp. 805-809, (2005); D'Ottavio S., Castagna C., Physiological load imposed on elite soccer referees during actual match play, Journal of Sports Medicine and Physical Fitness, 41, pp. 27-32, (2001); Ekblom B., Applied physiology of soccer, Sports Medicine, 3, pp. 50-60, (1986); Helsen W.F., Bultynck J.B., Physical and perceptual-cognitive demands of top-class refereeing in association football, Journal of Sports Sciences, 22, pp. 179-189, (2004); Krustrup P., Bangsbo J., Physiological demands of top-class soccer refereeing in relation to physical capacity: Effect of intense intermittent exercise training, Journal of Sports Sciences, 19, pp. 881-891, (2001); Krustrup P., Mohr M., Bangsbo, Activity profile and physiological demands of top-class soccer assistant refereeing in relation to training status, Journal of Sports Sciences, 20, pp. 861-871, (2002); Krustrup P., Mohr M., Amstrup T., Rysgaard T., Johansen J., Steensberg A., Et al., The Yo-yo intermittent recovery test: Physiological response, reliability and validity, Medicine and Science in Sports and Exercise, 35, pp. 697-705, (2003); Mallo J., Navarro E., Analysis of the load imposed on under-19 soccer players during some typical football training drills, Journal of Sports Sciences, 22, pp. 510-511, (2004); Mallo J., Navarro E., Garcia-Aranda J.M., Gilis B., Helsen W., Activity profile of top-class soccer referees in relation to performance in selected physical tests, Journal of Sports Sciences, 25, pp. 805-813, (2007); Mallo J., Navarro E., Garcia-Aranda J.M., Gilis B., Helsen W., Analysis of the kinematical demands imposed on top-class assistant referees during competitive soccer matches, Journal of Strength and Conditioning Research, 22, pp. 235-242, (2008); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, Journal of Sports Sciences, 21, pp. 519-528, (2003); Reilly T., Energetics of high-intensity exercise (soccer) with particular reference to fatigue, Journal of Sports Sciences, 15, pp. 257-263, (1997); Thomas J.R., Nelson J.K., Research Methods in Physical Activity, (2001); Weston M., Bird S., Helsen W., Nevill A., Castagna C., The effect of match standard and referee experience on the objective and subjective mach workload of English Premier League referees, Journal of Science and Medicine in Sport, 9, pp. 256-262, (2006); Weston M., Castagna C., The relationship between heart rate and intensity of match play in soccer referees, Journal of Sports Sciences, 23, pp. 1302-1303, (2005); Weston M., Castagna C., Impellizzeri F.M., Rampinini E., Abt G., Analysis of physical match performance in English Premier League soccer referees with particular reference to first half and player work rates, Journal of Science and Medicine in Sport, 10, pp. 390-397, (2007); Woltring H.J., On optimal smoothing and derivate estimation from noisy displacement data in biomechanics, Human Movement Sciences, 4, pp. 229-245, (1985)","","","","1466447X","","JSSCE","18979338","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-58149122725" "Myer G.D.; Ford K.R.; Barber Foss K.D.; Liu C.; Nick T.G.; Hewett T.E.","Myer, Gregory D (6701852696); Ford, Kevin R (7102539333); Barber Foss, Kim D (6507308390); Liu, Chunyan (57207487557); Nick, Todd G (7003786348); Hewett, Timothy E (7005201943)","6701852696; 7102539333; 6507308390; 57207487557; 7003786348; 7005201943","The relationship of hamstrings and quadriceps strength to anterior cruciate ligament injury in female athletes","2009","Clinical Journal of Sport Medicine","19","1","","3","8","5","284","10.1097/JSM.0b013e318190bddb","https://www.scopus.com/inward/record.uri?eid=2-s2.0-66649113164&doi=10.1097%2fJSM.0b013e318190bddb&partnerID=40&md5=cf72d5b0159c48e3fba44b25e4ab7bd6","Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States; Rocky Mountain University of Health Professions, Provo, UT, United States; Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, KY, United States; Center for Epidemiology and Biostatistics, Cincinnati, OH, United States; Departments of Pediatrics, Orthopaedic Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH, United States; Cincinnati Children's Hospital, Cincinnati, OH 45229, 3333 Burnet Avenue, United States","Myer G.D., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Rocky Mountain University of Health Professions, Provo, UT, United States, Cincinnati Children's Hospital, Cincinnati, OH 45229, 3333 Burnet Avenue, United States; Ford K.R., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, KY, United States; Barber Foss K.D., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States; Liu C., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Center for Epidemiology and Biostatistics, Cincinnati, OH, United States; Nick T.G., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Center for Epidemiology and Biostatistics, Cincinnati, OH, United States; Hewett T.E., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Departments of Pediatrics, Orthopaedic Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH, United States","OBJECTIVE : To determine the association of quadriceps and hamstrings strength to anterior cruciate ligament (ACL) injury risk in female athletes. The primary hypothesis was that there would be decreased knee flexor and increased knee extensor strength in female athletes who went on to ACL injured status (FACL) compared to uninjured female (FC) and male (MC) control subjects. Study design: Matched case control. Setting: Institutional Biomechanics Laboratory. Participants: Prospectively measured FACL (n = 22) female athletes who subsequently suffered confirmed noncontact ACL ruptures (16 during soccer and 6 during basketball play) were matched (1:4 ratio) to female controls (FC; n = 88) using limb (dominant or nondominant), pubertal status, sport, and nearest height and mass. In addition, male controls (MC) were matched (1:1 ratio) to FACL to serve as a secondary comparative control. ASSESSMENT OF RISK FACTORS: Isokinetic (concentric) knee extension/flexion strength (300 degrees/s). Results: FACL subjects had decreased hamstrings strength compared to MC (15%; 95% CI, 1 to 27%; P = 0.04). FC were not different from MC in hamstrings strength. Conversely, FACL subjects did not differ compared to the MC in quadriceps strength, and the FC demonstrated decreased quadriceps strength relative to MC (10%; 95% CI, 3 to 18%; P = 0.01). Conclusions: The results of this investigation indicate that female athletes who suffered ACL injury subsequent to strength testing had a combination of decreased hamstrings strength but not quadriceps strength compared to males. In direct contrast, female athletes who did not go on to ACL injury had decreased quadriceps strength and similar hamstrings strength compared to matched male athletes. Copyright © 2009 by Lippincott Williams & Wilkins.","Anterior cruciate ligament injury prediction; Isokinetic outcome measure; Knee co-contraction; Knee flexor to extensor ratio; Knee torques","Adolescent; Anterior Cruciate Ligament; Athletic Injuries; Biomechanics; Case-Control Studies; Female; Humans; Knee Injuries; Male; Muscle Strength; Prospective Studies; Risk Assessment; Thigh; Young Adult; anterior cruciate ligament injury; article; athlete; clinical article; controlled study; female; hamstring; human; knee function; male; muscle force; muscle isometric contraction; muscle strength; priority journal; quadriceps femoris muscle","Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. NCAA data and review of literature, Am J Sports Med, 23, pp. 694-701, (1995); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Myer G.D., Ford K.R., Paterno M.V., Et al., The effects of generalized joint laxity on risk of anterior cruciate ligament injury in young female athletes, Am J Sports Med, 36, pp. 1073-1080, (2008); Beynnon B.D., Fleming B.C., Anterior cruciate ligament strain in-vivo: A review of previous work, J Biomech, 31, pp. 519-525, (1998); Li G., Rudy T.W., Sakane M., Et al., The importance of quadriceps and hamstring muscle loading on knee kinematics and in-situ forces in the ACL, J Biomech, 32, pp. 395-400, (1999); Markolf K.L., Graff-Redford A., Amstutz H.C., In vivo knee stability: A quantitative assessment using an instrumented clinical testing apparatus, J Bone Joint Surg, 60 A, pp. 664-674, (1978); Besier T.F., Lloyd D.G., Cochrane J.L., Et al., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1168-1175, (2001); Ford K.R., van den Bogert A.J., Myer G.D., Et al., The effects of age and skill level on knee musculature co-contraction during functional activities: A systematic review, Br J Sports Med, 42, pp. 561-566, (2008); Renstrom P., Arms S.W., Stanwyck T.S., Et al., Strain within the anterior cruciate ligament during hamstring and quadriceps activity, Am J Sports Med, 14, pp. 83-87, (1986); Withrow T.J., Huston L.J., Wojtys E.M., Et al., Effect of varying hamstring tension on anterior cruciate ligament strain during in vitro impulsive knee flexion and compression loading, J Bone Joint Surg Am, 90, pp. 815-823, (2008); Hewett T.E., Myer G.D., Zazulak B.T., Hamstrings to quadriceps peak torque ratios diverge between sexes with increasing isokinetic angular velocity, J Sci Med Sport, 11, pp. 452-459, (2008); Holm I., Vollestad N., Significant effect of gender on hamstring- toquadriceps strength ratio and static balance in prepubescent children from 7 to 12 years of age, Am J Sports Med, 36, pp. 2007-2013, (2008); Hewett T.E., Stroupe A.L., Nance T.A., Et al., Plyometric training in female athletes. Decreased impact forces and increased hamstring torques, Am J Sports Med, 24, pp. 765-773, (1996); Malinzak R.A., Colby S.M., Kirkendall D.T., Et al., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech, 16, pp. 438-445, (2001); Ford K.R., Myer G.D., Schmitt L.C., Et al., Effect of drop height on lower extremity biomechanical measures in female athletes, Medicine & Science in Sports & Exercise, 40, (2008); Knapik J.J., Bauman C.L., Jones B.H., Et al., Preseason strength and flexibility imbalances associated with athletic injuries in female collegiate athletes, Am J Sports Med, 19, pp. 76-81, (1991); Soderman K., Alfredson H., Pietila T., Et al., Risk factors for leg injuries in female soccer players: A prospective investigation during one out-door season, Knee Surg Sports Traumatol Arthrosc, 9, pp. 313-321, (2001); Myer G.D., Ford K.R., Hewett T.E., Rationale and clinical techniques for anterior cruciate ligament injury prevention among female athletes, J Athl Train, 39, pp. 352-364, (2004); Quatman C.E., Ford K.R., Myer G.D., Et al., The effects of gender and pubertal status on generalized joint laxity in young athletes, J Sci Med Sport, 11, pp. 257-263, (2008); Quatman C.E., Ford K.R., Myer G.D., Et al., Maturation leads to gender differences in landing force and vertical jump performance: A longitudinal study, Am J Sports Med, 34, pp. 806-813, (2006); Davies P.L., Rose J.D., Motor skills of typically developing adolescents: Awkwardness or improvement?, Phys Occup Ther Pediatr, 20, pp. 19-42, (2000); Davies P.S., Assessment of cognitive development in adolescents by means of neuropsychological tasks, (1995); Stockbrugger B.A., Haennel R.G., Validity and reliability of a medicine ball explosive power test, J Strength Cond Res, 15, pp. 431-438, (2001); Bandy W.D., McLaughlin S., Intramachine and intermachine reliability for selected dynamic muscle performance tests, J Orthop Sports Phys Ther, 18, pp. 609-613, (1993); Orchard J.W., Potential to reduce the risk of noncontact anterior cruciate ligament (ACL) injuries [letter, Am J Sports Med, 33, (1930); Ahmad C.S., Clark A.M., Heilmann N., Et al., Effect of gender and maturity on quadriceps-to-hamstring strength ratio and anterior cruciate ligament laxity, Am J Sports Med, 34, pp. 370-374, (2006); Shea K.G., Pfeiffer R., Wang J.H., Et al., Anterior cruciate ligament injury in pediatric and adolescent soccer players: An analysis of insurance data, J Pediatr Orthop, 24, pp. 623-628, (2004); Sell T.C., Ferris C.M., Abt J.P., Et al., Predictors of proximal tibia anterior shear force during a vertical stop-jump, J Orthop Res, 25, pp. 1589-1597, (2007); Withrow T.J., Huston L.J., Wojtys E.M., Et al., The relationship between quadriceps muscle force, knee flexion, and anterior cruciate ligament strain in an in vitro simulated jump landing, Am J Sports Med, 34, pp. 269-274, (2006); Mac Williams B.A., Wilson D.R., DesJardins J.D., Et al., Hamstrings cocontraction reduces internal rotation, anterior translation, and anterior cruciate ligament load in weight-bearing flexion, J Orthop Res, 17, pp. 817-822, (1999); Lloyd D.G., Buchanan T.S., Strategies of muscular support of varus and valgus isometric loads at the human knee, J Biomech, 34, pp. 1257-1267, (2001); Huston L.J., Wojtys E.M., Neuromuscular performance characteristics in elite female athletes, Am J Sports Med, 24, pp. 427-436, (1996); Malinzak R.A., Colby S.M., Kirkendall D.T., Et al., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech (Bristol, Avon), 16, pp. 438-445, (2001); Sigward S., Powers C.M., The influence of experience on knee mechanics during side-step cutting in females, Clin Biomech (Bristol, Avon), 21, pp. 740-747, (2006); Lawrence 3rd R.K., Kernozek T.W., Miller E.J., Et al., Influences of hip external rotation strength on knee mechanics during single-leg drop landings in females, Clin Biomech (Bristol, Avon), 23, pp. 806-813, (2008); Shultz S.J., Perrin D.H., Adams M.J., Et al., Neuromuscular response characteristics in men and women after knee perturbation in a single-leg, weight-bearing stance, J Athl Train, 36, pp. 37-43, (2001); Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am J Sports Med, 30, pp. 261-267, (2002); Olsen O.E., Myklebust G., Engebretsen L., Et al., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med, 32, pp. 1002-1012, (2004); Boden B.P., Dean G.S., Feagin J.A., Et al., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Cowling E.J., Steele J.R., The effect of upper-limb motion on lower-limb muscle synchrony. Implications for anterior cruciate ligament injury, J Bone Joint Surg Am, 83-A, pp. 35-41, (2001); DeMorat G., Weinhold P., Blackburn T., Et al., Aggressive quadriceps loading can induce noncontact anterior cruciate ligament injury, Am J Sports Med, 32, pp. 477-483, (2004); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Et al., The effect of neuromuscular training on the incidence of knee injury in female athletes. A prospective study, Am J Sports Med, 27, pp. 699-706, (1999); White K.K., Lee S.S., Cutuk A., Et al., EMG power spectra of intercollegiate athletes and anterior cruciate ligament injury risk in females, Med Sci Sports Exerc, 35, pp. 371-376, (2003); Myer G.D., Ford K.R., McLean S.G., Et al., The effects of plyometric versus dynamic stabilization and balance training on lower extremity biomechanics, Am J Sports Med, 34, pp. 490-498, (2006); Myer G.D., Ford K.R., Brent J.L., Et al., The effects of plyometric versus dynamic balance training on power, balance and landing force in female athletes, J Strength Cond Res, 20, pp. 345-353, (2006); Myer G.D., Ford K.R., Palumbo J.P., Et al., Neuromuscular training improves performance and lower-extremity biomechanics in female athletes, J Strength Cond Res, 19, pp. 51-60, (2005); Mcginn P.A., Mattacola C.G., Malone T.R., Et al., Strenght training for 6-weeks does not significanlty alter landing mechanics of female collegiate basketball athletes, J Orthop Sports Phys Ther, 37, (2007); Herman D.C., Weinhold P.S., Guskiewicz K.M., Et al., The effects of strength training on the lower extremity biomechanics of female recreational athletes during a stop-jump task, Am J Sports Med, 36, pp. 733-740, (2008); Hewett T.E., Stroupe A.L., Nance T.A., Et al., Plyometric training in female athletes. Decreased impact forces and increased hamstring torques, Am J Sports Med, 24, pp. 765-773, (1996); Draganich L.F., Vahey J.W., An in vitro study of anterior cruciate ligament strain induced by quadriceps and hamstrings forces, J Orthop Res, 8, pp. 57-63, (1990); Krosshaug T., Nakamae A., Boden B.P., Et al., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, Am J Sports Med, 35, pp. 359-367, (2007)","G. D. Myer; Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; email: greg.myer@chmcc.org","","","1050642X","","CJSME","19124976","English","Clin. J. Sport Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-66649113164" "Hewett T.E.; Myer G.D.; Kiefer A.W.; Ford K.R.","Hewett, Timothy E. (7005201943); Myer, Gregory D. (6701852696); Kiefer, Adam W. (35316086800); Ford, Kevin R. (7102539333)","7005201943; 6701852696; 35316086800; 7102539333","Longitudinal Increases in Knee Abduction Moments in Females during Adolescent Growth","2015","Medicine and Science in Sports and Exercise","47","12","","2579","2585","6","78","10.1249/MSS.0000000000000700","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946799363&doi=10.1249%2fMSS.0000000000000700&partnerID=40&md5=2c8abb3bea76cfdc5ab9f3b19d2b4a19","Department of Orthopedics, Mayo Clinic, 200 First Street SW, Rochester, 55905, MN, United States; Ohio State University Sports Medicine, Columbus, OH, United States; Sports Health and Performance Institute, Ohio State University, Columbus, OH, United States; Departments of Physiology and Cell Biology, Orthopaedic Surgery, Biomedical Engineering, Family Medicine, School of Rehabilitation Sciences, Ohio State University, Columbus, OH, United States; Cincinnati Children's Hospital, Research Foundation, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States; Division of Sports Medicine, Cincinnati Children's Hospital, Medical Center, Cincinnati, OH, United States; Department of Pediatrics and Orthopaedic Surgery, University of Cincinnati, Cincinnati, OH, United States; Micheli Center for Sports Injury Prevention, Waltham, MA, United States; Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, OH, United States; Center for Cognition, Action, and Perception, University of Cincinnati, Cincinnati, OH, United States; Department of Physical Therapy, High Point University, High Point, NC, United States","Hewett T.E., Department of Orthopedics, Mayo Clinic, 200 First Street SW, Rochester, 55905, MN, United States, Ohio State University Sports Medicine, Columbus, OH, United States, Sports Health and Performance Institute, Ohio State University, Columbus, OH, United States, Departments of Physiology and Cell Biology, Orthopaedic Surgery, Biomedical Engineering, Family Medicine, School of Rehabilitation Sciences, Ohio State University, Columbus, OH, United States, Cincinnati Children's Hospital, Research Foundation, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Division of Sports Medicine, Cincinnati Children's Hospital, Medical Center, Cincinnati, OH, United States, Department of Pediatrics and Orthopaedic Surgery, University of Cincinnati, Cincinnati, OH, United States; Myer G.D., Ohio State University Sports Medicine, Columbus, OH, United States, Sports Health and Performance Institute, Ohio State University, Columbus, OH, United States, Departments of Physiology and Cell Biology, Orthopaedic Surgery, Biomedical Engineering, Family Medicine, School of Rehabilitation Sciences, Ohio State University, Columbus, OH, United States, Cincinnati Children's Hospital, Research Foundation, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Division of Sports Medicine, Cincinnati Children's Hospital, Medical Center, Cincinnati, OH, United States, Micheli Center for Sports Injury Prevention, Waltham, MA, United States; Kiefer A.W., Cincinnati Children's Hospital, Research Foundation, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Division of Sports Medicine, Cincinnati Children's Hospital, Medical Center, Cincinnati, OH, United States, Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, OH, United States, Center for Cognition, Action, and Perception, University of Cincinnati, Cincinnati, OH, United States; Ford K.R., Cincinnati Children's Hospital, Research Foundation, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Division of Sports Medicine, Cincinnati Children's Hospital, Medical Center, Cincinnati, OH, United States, Department of Physical Therapy, High Point University, High Point, NC, United States","Purpose: Knee abduction moment (KAM) is an injury risk factor for anterior cruciate ligament (ACL) injury that shows divergent incidence between males and females during adolescence. The objective of this study was to determine the relation between skeletal growth and increased KAM. The hypotheses tested were that females would demonstrate peak KAM during landing at peak height velocity (PHV) and that they would diverge from males at PHV. Methods: The subject pool consisted of 674 females and 218 males (1387 female and 376 male assessments) who participated in a preseason testing session before their basketball or soccer seasons. They were tested longitudinally for multiple years (2 ± 1 yr) to capture maturation via estimates of percent (%) adult stature and biomechanical analysis during a drop vertical jump maneuver. Data were analyzed using three-dimensional motion analysis that used a 37 retroreflective marker body model and inverse dynamics to calculate segment joint centers and peak KAM. Results: Mature females, as defined as 92% adult stature or greater, displayed increased peak KAM and knee abduction angles relative to growing (≤91% adult stature) adolescent females (P < 0.001). A significant sex-maturation (% adult stature) interaction (P < 0.001) in peak KAM was observed. Post hoc analyses showed consistent sex differences in groups greater than or equal to, but not less than, 92% adult stature, which is approximately at PHV. Hence, sex differences in peak KAM and PHV coincide. Conclusions: Increases in peak KAM during and after PHV seem to coincide with increased risk of ACL injury in females. KAM peaked in females at PHV. Tracking longitudinal increases in peak KAM may be useful for the identification of females at increased risk of ACL injury. © 2015 by the American College of Sports Medicine.","ACL INJURY; IMBALANCE; INJURY PREVENTION; NEUROMUSCULAR CONTROL; SEX DIFFERENCES","Adolescent; Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Body Height; Cross-Sectional Studies; Female; Humans; Joint Instability; Knee Injuries; Knee Joint; Longitudinal Studies; Male; Movement; Risk Factors; Sex Factors; Sexual Maturation; adolescent; anterior cruciate ligament injury; biomechanics; body height; cross-sectional study; female; human; joint instability; knee; Knee Injuries; longitudinal study; male; movement (physiology); pathophysiology; physiology; risk factor; sex difference; sexual maturation","Andrish J.T., Anterior cruciate ligament injuries in the skeletally immature patient, Am J Orthop (Belle Mead NJ), 30, 2, pp. 103-110, (2001); Beynnon B., Slauterbeck J., Padua D., Hewett T.E., Update on ACL risk factors and prevention strategies in the female athlete, National Athletic Trainers' Association 52nd Annual Meeting and Clinical Symposia., pp. 15-18, (2001); Bisseling R.W., Hof A.L., Handling of impact forces in inverse dynamics, J Biomech., 39, 13, pp. 2438-2444, (2006); Buehler-Yund C., A Longitudinal Study of Injury Rates and Risk Factors in 5 to 12 Year Old Soccer Players, (1999); Clanton T.O., De Lee J.C., Sanders B., Neidre A., Knee ligament injuries in children, J Bone Joint Surg Am., 61, 8, pp. 1195-1201, (1979); Cole G.K., Nigg B.M., Ronsky J.L., Yeadon M.R., Application of the joint coordinate system to three-dimensional joint attitude and movement representation: A standardization proposal, J Biomech Eng., 115, 4 A, pp. 344-349, (1993); Ford K.R., Myer G.D., Divine J.G., Hewett T.E., Landing differences in high school female soccer players grouped by age, Med Sci Sports Exerc., 36, 5, (2004); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc., 35, 10, pp. 1745-1750, (2003); Ford K.R., Myer G.D., Hewett T.E., Reliability of landing 3D motion analysis: Implications for longitudinal analyses, Med Sci Sports Exerc., 39, 11, pp. 2021-2028, (2007); Ford K.R., Myer G.D., Smith R.L., Byrnes R.N., Dopirak S.E., Hewett T.E., Use of an overhead goal alters vertical jump performance and biomechanics, J Strength Cond Res., 19, 2, pp. 394-399, (2005); Ford K.R., Myer G.D., Smith R.L., Vianello R.M., Seiwert S.L., Hewett T.E., A comparison of dynamic coronal plane excursion between matched male and female athletes when performing single leg landings, Clin Biomech (Bristol, Avon), 21, 1, pp. 33-40, (2006); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Med Sci Sports Exerc., 37, 1, pp. 124-129, (2005); Gallagher S.S., Finison K., Guyer B., Goodenough S., The incidence of injuries among 87,000Massachusetts children and adolescents: Results of the 1980-81 Statewide Childhood Injury Prevention Program Surveillance System, Am J Public Health, 74, 12, pp. 1340-1347, (1984); Harmon K.G., Dick R., The relationship of skill level to anterior cruciate ligament injury, Clin J Sport Med., 8, 4, pp. 260-265, (1998); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes. A prospective study, Am J Sports Med., 27, 6, pp. 699-706, (1999); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J Bone Joint Surg Am., 86 A, 8, pp. 1601-1608, (2004); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med., 33, 4, pp. 492-501, (2005); Hewett T.E., Myer G.D., Ford K.R., Anterior cruciate ligament injuries in female athletes: Part 1, mechanisms and risk factors, Am J Sports Med., 34, 2, pp. 299-311, (2006); Hewett T.E., Myer G.D., Ford K.R., Slauterbeck J.R., Preparticipation physical examination using a box drop vertical jump test in young athletes: The effects of puberty and sex, Clin J Sport Med., 16, 4, pp. 298-304, (2006); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes. Decreased impact forces and increased hamstring torques, Am J Sports Med., 24, 6, pp. 765-773, (1996); Kellis E., Tsitskaris G.K., Nikopoulou M.D., Moiusikou K.C., The evaluation of jumping ability of male and female basketball players according to their chronological age and major leagues, J Strength Cond Res., 13, 1, pp. 40-46, (1999); Kernozek T.W., Torry M.R., Van Hoof H., Cowley H., Tanner S., Gender differences in frontal and sagittal plane biomechanics during drop landings, Med Sci Sports Exerc., 37, 6, pp. 1003-1012, (2005); Khamis H.J., Roche A.F., Predicting adult stature without using skeletal age: The khamis-roche method, Pediatrics, 94, 4, pp. 504-507, (1994); Lloyd D.G., Buchanan T.S., Strategies of muscular support of varus and valgus isometric loads at the human knee, J Biomech., 34, 10, pp. 1257-1267, (2001); Lloyd D.G., Buchanan T.S., Besier T.F., Neuromuscular biomechanical modeling to understand knee ligament loading, Med Sci Sports Exerc., 37, 11, pp. 1939-1947, (2005); Lohmander L.S., Ostenberg A., Englund M., Roos H., High prevalence of knee osteoarthritis, pain, and functional limitations in female soccer players twelve years after anterior cruciate ligament injury, Arthritis Rheum., 50, 10, pp. 3145-3152, (2004); Malina R.M., Bouchard C., Growth, Maturation, and Physical Activity, 13, (1991); Malina R.M., Bouchard C., Timing and sequence of changes in growth, maturation, and performance during adolescence, Growth, Maturation, and Physical Activity, pp. 267-272, (1991); Markolf K.L., Graff-Redford A., Amstutz H.C., In vivo knee stability: A quantitative assessment using an instrumented clinical testing apparatus, J Bone Joint Surg., 60 A, 5, pp. 664-674, (1978); McLean S.G., Lipfert S.W., Van Den-Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc., 36, 6, pp. 1008-1016, (2004); McLean S.G., Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: Potential for injury in women, Med Sci Sports Exerc., 31, 7, pp. 959-968, (1999); Myer G.D., Ford K.R., Brent J.L., Hewett T.E., Differential neuromuscular training effects on ACL injury risk factors in ""high-risk"" versus ""low-risk"" athletes, BMC Musculoskelet Disord., 8, 39, (2007); Noyes F.R., Keller C.S., Grood E.S., Butler D.L., Advances in the understanding of knee ligament injury, repair, and rehabilitation, Med Sci Sports Exerc., 16, 5, pp. 427-443, (1984); Noyes F.R., McGinniss G.H., Mooar L.A., Functional disability in the anterior cruciate insufficient knee syndrome. Review of knee rating systems and projected risk factors in determining treatment, Sports Med., 1, pp. 278-302, (1984); Quatman C.E., Ford K.R., Myer G.D., Hewett T.E., Maturation leads to gender differences in landing force and vertical jump performance: A longitudinal study, Am J Sports Med., 34, 5, pp. 806-813, (2006); Scoville C.R., Williams G.N., Uhorchak J.M., Arciero R.A., Taylor D.C., Risk factors associated with anterior cruciate ligament injury, Proceedings of the 68th Annual Meeting of the American Academy of Orthopaedic Surgeons, (2001); Shea K.G., Pfeiffer R., Wang J.H., Curtin M., Apel P.J., Anterior cruciate ligament injury in pediatric and adolescent soccer players: An analysis of insurance data, J Pediatr Orthop., 24, 6, pp. 623-628, (2004); Tanner J.M., Davies P.S., Clinical longitudinal standards for height and height velocity for North American children, J Pediatr., 107, 3, pp. 317-329, (1985); Tursz A., Crost M., Sports-related injuries in children. A study of their characteristics, frequency, and severity, with comparison to other types of accidental injuries, Am J Sports Med., 14, 4, pp. 294-299, (1986); Van Den-Bogert A.J., De Koning J.J., On optimal filtering for inverse dynamics analysis, Proceedings of the Proceedings of the IXth Biennial Conference of the Canadian Society for Biomechanics, pp. 214-215, (1996); Winter D.A., Biomechanics and Motor Control of Human Movement, pp. 91-95, (1990)","T.E. Hewett; Department of Orthopedics, Mayo Clinic, Rochester, 200 First Street SW, 55905, United States; email: hewett.timothy@mayo.edu","","Lippincott Williams and Wilkins","01959131","","MSCSB","25970663","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84946799363" "Manolopoulos E.; Papadopoulos C.; Kellis E.","Manolopoulos, E. (6504424477); Papadopoulos, C. (15023313300); Kellis, E. (6603815400)","6504424477; 15023313300; 6603815400","Effects of combined strength and kick coordination training on soccer kick biomechanics in amateur players","2006","Scandinavian Journal of Medicine and Science in Sports","16","2","","102","110","8","91","10.1111/j.1600-0838.2005.00447.x","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33644902062&doi=10.1111%2fj.1600-0838.2005.00447.x&partnerID=40&md5=cdac7f0405dbe3cbe3bcd77576eda145","Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Serres, Greece; Department of Physical Education and Sport Science at Serres, TEFAA Serres, Aristotle University of Thessaloniki, Agios Ioannis, Serres 62100, Greece","Manolopoulos E., Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Serres, Greece; Papadopoulos C., Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Serres, Greece; Kellis E., Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Serres, Greece, Department of Physical Education and Sport Science at Serres, TEFAA Serres, Aristotle University of Thessaloniki, Agios Ioannis, Serres 62100, Greece","The aim of this study was to examine the effect of a soccer (strength and technique) training program on kinematics and electromyographic (EMG) muscle activity during a instep kick. Ten amateur soccer players (aged 19.9±0.4 years, body mass 74.8±9.1 kg, height 177.4±6.7 cm) constituted the experimental group (EG) whereas 10 players (age 21.6±1.3 years, weight 71.5±6.7 kg, height 175.2±3.4 cm) served as controls (CG). The EG followed a 10-week soccer-specific training program combining strength and technique exercises. All participants performed an instep soccer kick using a two-step approach while three-dimensional data and EMG from six muscles of swinging and support legs were recorded prior to and after training. Maximum isometric leg press strength, 10-m sprint performance and maximum speed performance on a bicycle ergometer were also measured. Analysis of variance designs with repeated measures showed that the EG improved significantly (P<0.05) maximum ball speed, the linear velocity of the foot, ankle and angular velocity of all joints during the final phase of the kick. Training had insignificant effects on EMG values, apart from an increase in the averaged EMG of the vastus medialis whereas maximum isometric strength and sprint times significantly improved after training (P<0.05). The present results suggest that the application of the training programs using soccer-specific strength exercises would be particularly effective in improving of soccer kick performance. Copyright © Blackwell Munksgaard 2005.","Biomechanics; Electromyography; Soccer kick; Technique; Training program","Adult; Analysis of Variance; Biomechanics; Electromyography; Exercise Test; Humans; Leg; Male; Muscle, Skeletal; Physical Education and Training; Psychomotor Performance; Running; Soccer; Treatment Outcome; adult; analysis of variance; article; biomechanics; clinical trial; controlled clinical trial; controlled study; electromyography; exercise test; human; leg; male; physical education; physiology; psychomotor performance; randomized controlled trial; running; skeletal muscle; sport; treatment outcome","Aagaard P., Trolle M., Simonsen E., Bangsbo J., Klausen K., High speed knee extension capacity of soccer players after different kinds of strength training, Science and Soccer II, pp. 92-94, (1993); Bangsbo J., Fitness Training in Football, (1994); Bangsbo J., Physical Conditioning Training in Soccer: A Scientific Approach, (1994); Bober T., Putnam G., Woodworth G., Factors Influencing the Angular Velocity of a Human Limb Segment, 20, pp. 511-521, (1987); Buhrle M., Ed, Dimensionen des Kraftverhaltens und ihre spezifischen Trainingsmethoden, Grundlagen des Maximal-und Schnellkrafttrainings, pp. 82-111, (1985); Cabri J., De Proft E., Dufour W., Clarys J., The relation between muscular strength and kick performance, Science and Football, pp. 186-193, (1988); Cometti G., Les methodes de musculation, Tome II: Donnees Pratiques. Unite de Formation et de Recherche en S.T.A.P.S, (1988); De Proft E., Cabri J., Dufour W., Clarys J., Strength training and kick performance in soccer players, Science and Football, pp. 109-113, (1988); De Proft E., Clarys J., Bollens E., Cabri J., Dufour W., Muscle activity in the soccer kick, Science and Football, pp. 434-440, (1988); Dempster W.T., Space Requirements of the Seated Operator; Dorge H., Bull-Andersen T., Sorensen H., Simonsen E., Biomechanical Differences in Soccer Kicking with the Preferred and the Non-preferred Leg, 20, pp. 293-299, (2002); Dorge H., Bull-Andersen T., Sorensen H., Simonsen E., Aagaard H., Dyhre Poulsen P., Klausen K., EMG Activity of the Iliopsoas Muscle and Leg Kinetics during the Soccer Place Kick, 9, pp. 155-200, (1999); Dutta P., Subramanium S., Effect of six weeks of isokinetic strength training combined with skill training on soccer kicking performance, Science and Soccer IV, pp. 334-340, (2002); Isokawa M., Lees A., A biomechanical analysis of the instep kick motion in soccer, Science and Football, pp. 449-455, (1988); Kellis E., Quantification of Quadriceps and Hamstring Antagonist Activity, 26, pp. 37-62, (1998); Lees A., Nolan L., The Biomechanics of Soccer, 16, pp. 211-234, (1998); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 441-448, (1988); Opavsky P., An investigation of linear and angular kinematics of the leg during two types of soccer kick, Science and Football, pp. 456-459, (1988); Plagenhoef S., Patterns of Human Motion, (1971); Sheehy P., Burdett R., Irrgang J., Vanswearingen J., An Electromyographic Study of Vastus Medialis Oblique and Vastus Lateralis Activity while Ascending and Descending Steps, 27, pp. 423-429, (1998); Sorensen H., Zacho M., Simonsen E., Dyhre-Poulsen P., Klausen K., Dynamics of the Martial Arts High Front Kick, pp. 483-495, (1996); Taina F., Grehaigne J., Cometti G., The influence of maximal strength training of lower limbs of soccer players on their physical and kick performances, Science and Soccer II, pp. 98-103, (1993); Togari H., Ohashi J., Oghushi T., Isokinetic muscle strength of soccer players, Science and Football, pp. 181-185, (1988); Trolle M., Aagaard P., Simonsen J., Bangsbo J., Klaysen K., Effects of strength training on kicking performance in soccer, Science and Soccer II, pp. 95-98, (1993); Tsaousidis N., Zatsiorsky V., Two Types of Ball-effector Interaction and Their Relative Contribution to Soccer Kicking, 15, pp. 861-876, (1996); Viitasalo J., Salo A., Lahtinen J., Neuromuscular Functioning of Athletes and Non-athletes in the Drop Jump, 78, pp. 432-440, (1998); Weineck J., (1992); Winter D.A., Biomechanics and Motor Control of Human Movement, (1990)","E. Kellis; Department of Physical Education and Sport Science at Serres, TEFAA Serres, Aristotle University of Thessaloniki, Agios Ioannis, Serres 62100, Greece; email: ekellis@phed-sr.auth.gr","","","16000838","","SMSSE","16533348","English","Scand. J. Med. Sci. Sports","Article","Final","","Scopus","2-s2.0-33644902062" "Chomiak J.; Junge A.; Peterson L.; Dvorak J.","Chomiak, Jiri (7004457160); Junge, Astrid (7006011216); Peterson, Lars (56371168200); Dvorak, Jiri (7202106693)","7004457160; 7006011216; 56371168200; 7202106693","Severe injuries in football players: Influencing factors","2000","American Journal of Sports Medicine","28","5 SUPPL.","","S58","S68","10","254","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0033814938&partnerID=40&md5=f15bd6f04c3b10e5d8c4c884a9569c22","Orthopedic Clinic IPVZ Bulovka, Praha, Czech Republic; Schulthess Clinic, Zurich, Switzerland; Gothenburg Medical Center, Västra Frölunda, Sweden; Spine Unit, Schulthess Clinic, CH-8008 Zurich, Lengghalde 2, Switzerland","Chomiak J., Orthopedic Clinic IPVZ Bulovka, Praha, Czech Republic; Junge A., Schulthess Clinic, Zurich, Switzerland; Peterson L., Gothenburg Medical Center, Västra Frölunda, Sweden; Dvorak J., Schulthess Clinic, Zurich, Switzerland, Spine Unit, Schulthess Clinic, CH-8008 Zurich, Lengghalde 2, Switzerland","The aims of this prospective study were to analyze factors related to the occurrence of severe football injuries in players of different ages (14 to 42 years) and different skill levels (local teams to first league teams). In the Czech Republic, 398 players were followed up for 1 year, during which time they sustained 686 injuries. Of these, 113 (16.5%) were severe injuries. Ninety-seven severe injuries (86%) were able to be documented in detail. Trauma was the cause of 81.5% of the injuries and overuse was the cause of 18.5%. Joint sprains predominated (30%), followed by fractures (16%), muscle strains (15%), ligament ruptures (12%), meniscal tears and contusions (8%), and other injuries. Injuries to the knee were most prevalent (29%), followed by injuries to the ankle (19%) and spine (9%). More injuries occurred during games (59%) than in practice. Twenty-four percent of the injured players had suffered a previous injury of the same body part. Forty-six percent of injuries were caused by contact and 54% involved no body contact. Thirty-one percent of severe injuries were caused by foul play. From these results and the analysis of injuries in specific body parts, the following factors were determined to influence the occurrence of severe injuries: 1) personal factors (intrinsic): age of player, previous injuries, joint instability, abnormality of the spine, poor physical condition, poor football skills, or inadequate treatment and rehabilitation of injuries; 2) environmental factors (extrinsic): subjective exercise overload during practices and games, amount and quality of training, playing field conditions, equipment (wearing of shin guards and taping) and violations of existing rules (foul play).","","Adolescent; Adult; Age Factors; Athletic Injuries; Biomechanics; Environment; Football; Humans; Male; Physical Fitness; Prospective Studies; Protective Clothing; Severity of Illness Index; Soccer; Task Performance and Analysis; adolescent; adult; ankle injury; article; athlete; attitude; controlled study; Czech Republic; disease severity; environmental factor; fitness; football; fracture; human; incidence; ligament injury; major clinical study; muscle injury; priority journal; risk factor; skill; spine injury; sport injury; training","Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. NCAA data and review of literature, Am J Sports Med, 23, pp. 694-701, (1995); Arnason A., Gudmundsson A., Dahl H.A., Et al., Soccer injuries in Iceland, Scand J Med Sci Sports, 6, pp. 40-45, (1996); Backous D.D., Friedl K.E., Smith N.J., Et al., Soccer injuries and their relation to physical maturity, Am J Dis Child, 142, pp. 839-842, (1988); Berbig R., Biener K., Sportunfalle bei Fussballtorhutern, Schweiz Z Sportsmed, 31, pp. 73-79, (1983); Bjordal J.M., Arnoy F., Hannestad B., Et al., Epidemiology of anterior cruciate ligament injuries in soccer, Am J Sport Med, 25, pp. 341-345, (1997); Browne M.G., Nicholas S.J., Upper extremity injuries in American football, pp. 863-882, (1995); Clain M.R., The Achilles tendon, pp. 71-80, (1995); Davis P.F., Trevino S.G., Ankle injuries, pp. 147-169, (1995); Dvorak J., Junge A., Football injuries and physical symptoms: A review of the literature, Am J Sports Med, 28, SUPPL., (2000); Dvorak J., Junge A., Chomiak J., Et al., Risk factor analysis for injuries in football players: Possibilities for a prevention program, Am J Sports Med, 28, SUPPL., (2000); Ekstrand J., Gillquist J., Soccer injuries and their mechanisms: A prospective study, Med Sci Sports Exerc, 15, pp. 267-270, (1983); Ekstrand J., Gillquist J., The avoidability of soccer injuries, Int J Sports Med, 2, pp. 124-128, (1983); Ekstrand J., Gillquist J., The frequency of muscle tightness and injuries in soccer players, Am J Sports Med, 10, pp. 75-78, (1982); Ekstrand J., Gillquist J., Liljedahl S.O., Prevention of soccer injuries. 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A national survey of incidence and risk factors and a 7-year follow-up of 310 players, Acta Orthop Scand, 66, pp. 107-112, (1995); Rosch D., Hodgson R., Peterson L., Et al., Assessment and evaluation of football performance, Am J Sports Med, 28, SUPPL., (2000); Sadat-Ali M., Sankaran-Kutty M., Soccer injuries in Saudi Arabia, Am J Sports Med, 15, pp. 500-502, (1987); Sandelin J., Santavirta S., Kiviluoto O., Acute soccer injuries in Finland in 1980, Br J Sports Med, 19, pp. 30-33, (1985); Schlink M.B., Muscle imbalance pattern associated with low back syndromes, pp. 146-156, (1996); Schmidt-Olsen S., Jorgensen U., Kaalund S., Et al., Injuries among young soccer players, Am J Sports Med, 19, pp. 273-275, (1991); Stephenson G.C., Gibson R.M., Fatal penetrating head injury during game of soccer, Injury, 23, pp. 197-198, (1992); Sullivan J.A., Gross R.H., Grana W.A., Et al., Evaluation of injuries in youth soccer, Am J Sports Med, 8, pp. 325-327, (1980); Tossy J.D., Mead N.C., Sigmund H.M., Acromioclavicular separation: Useful and practical classification for treatment, Clin Orthop, 28, pp. 111-119, (1963); Tropp H., Ekstrand J., Gillquist J., Factors affecting stabilometry recordings of single limb stance, Am J Sports Med, 12, pp. 185-188, (1984); Tysvaer A.T., Head and neck injuries in soccer. Impact of minor trauma, Sports Med, 14, pp. 200-213, (1992); Van Akkerveeken P.F., Soccer, pp. 515-521, (1996); Watson A.W., Sports injuries in footballers related to defects of posture and body mechanics, J Sports Med Phys Fitness, 35, pp. 289-294, (1995); Weber B.G., Die Verletzungen des oberen Sprunggelenkes, pp. 51-65, (1972)","","","","03635465","","AJSMD","11032109","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-0033814938" "Mendiguchia J.; Samozino P.; Martinez-Ruiz E.; Brughelli M.; Schmikli S.; Morin J.-B.; Mendez-Villanueva A.","Mendiguchia, J. (16239420700); Samozino, P. (14024773800); Martinez-Ruiz, E. (55993871800); Brughelli, M. (17433572900); Schmikli, S. (6506088894); Morin, J.-B. (55917329600); Mendez-Villanueva, A. (15035651800)","16239420700; 14024773800; 55993871800; 17433572900; 6506088894; 55917329600; 15035651800","Progression of mechanical properties during on-field sprint running after returning to sports from a hamstring muscle injury in soccer players","2014","International Journal of Sports Medicine","35","8","","690","695","5","98","10.1055/s-0033-1363192","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84903699628&doi=10.1055%2fs-0033-1363192&partnerID=40&md5=a86798657115d88b225751e0043295b1","Department of Physical Therapy, ZENTRUM Rehab and Performance Center, 31010 Barañain, Calle B nave 23 (Poligono Barañain), Spain; Laboratory of Exercise Physiology (EA4338), University of Savoy, Le Bourget du Lac, France; Department of Sports Traumatology, Catholic University of San Antonio, Murcia, Spain; Sports Performance Research Institute New Zealand, Auckland University of Technology, Auckland, New Zealand; Department of Rehabilitation and Sports Medicine, Rudolf Magnus Institute of Neuroscience, Utrecht, Netherlands; Laboratory of Exercise Physiology, University of Saint-Etienne, France; Sport Science, ASPIRE Academy for Sports Excellence, Doha, Qatar","Mendiguchia J., Department of Physical Therapy, ZENTRUM Rehab and Performance Center, 31010 Barañain, Calle B nave 23 (Poligono Barañain), Spain; Samozino P., Laboratory of Exercise Physiology (EA4338), University of Savoy, Le Bourget du Lac, France; Martinez-Ruiz E., Department of Sports Traumatology, Catholic University of San Antonio, Murcia, Spain; Brughelli M., Sports Performance Research Institute New Zealand, Auckland University of Technology, Auckland, New Zealand; Schmikli S., Department of Rehabilitation and Sports Medicine, Rudolf Magnus Institute of Neuroscience, Utrecht, Netherlands; Morin J.-B., Laboratory of Exercise Physiology, University of Saint-Etienne, France; Mendez-Villanueva A., Sport Science, ASPIRE Academy for Sports Excellence, Doha, Qatar","The objectives of this study were to examine the consequences of an acute hamstring injury on performance and mechanical properties of sprint-running at the time of returning to sports and after the subsequent ~2 months of regular soccer training after return. 28 semi-professional male soccer players, 14 with a recent history of unilateral hamstring injury and 14 without prior injury, participated in the study. All players performed two 50-m maximal sprints when cleared to return to play (Test 1), and 11 injured players performed the same sprint test about 2 months after returning to play (Test 2). Sprint performance (i.e., speed) was measured via a radar gun and used to derive linear horizontal force-velocity relationships from which the following variables obtained: theoretical maximal velocity (V0), horizontal force (FH0) and horizontal power (Pmax). Upon returning to sports the injured players were moderately slower compared to the uninjured players. FH0and Pmax were also substantially lower in the injured players. At Test 2, the injured players showed a very likely increase in FH0and Pmax concomitant with improvements in early acceleration performance. Practitioners should consider assessing and training horizontal force production during sprint running after acute hamstring injuries in soccer players before they return to sports. © Georg Thieme Verlag KG Stuttgart, New York.","hamstring strain; injury; soccer; sprinting","Adult; Athletic Performance; Biomechanical Phenomena; Humans; Male; Muscle, Skeletal; Physical Education and Training; Running; Soccer; Thigh; Time Factors; Young Adult; adult; athletic performance; biomechanics; human; injuries; male; physical education; physiology; running; skeletal muscle; soccer; thigh; time; young adult","Andrzejewski M., Chmura J., Pluta B., Strzelczyk R., Kasprzak A., Analysis of sprinting activities of professional soccer players, J Strength Cond Res, 27, pp. 2134-2140, (2013); Arnason A., Gudmundsson A., Dahl H.A., Johannsson E., Soccer injuries in Iceland, Scandinavian Journal of Medicine and Science in Sports, 6, 1, pp. 40-45, (1996); Arsac L.M., Locatelli E., Modeling the energetics of 100-m running by using speed curves of world champions, Journal of Applied Physiology, 92, 5, pp. 1781-1788, (2002); 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Morin J.B., Edouard P., Samozino P., Technical ability of force application as a determinant factor of sprint performance, Med Sci Sports Exerc, 43, pp. 1680-1688, (2011); Morin J.-B., Jeannin T., Chevallier B., Belli A., Spring-mass model characteristics during sprint running: Correlation with performance and fatigue-induced changes, International Journal of Sports Medicine, 27, 2, pp. 158-165, (2006); Nielsen A.B., Yde J., Epidemiology and traumatology of injuries in soccer, American Journal of Sports Medicine, 17, 6, pp. 803-807, (1989); Orchard J.W., Hamstrings are most susceptible to injury during the early stance phase of sprinting, Br J Sports Med, 46, pp. 88-89, (2012); Samozino P., Rejc E., Di Prampero P.E., Belli A., Morin J.B., Optimal force-velocity profile in ballistic movements - Altius: Citius or fortius, Med Sci Sports Exerc, 44, pp. 313-322, (2012); Samozino P., Morin J.B., Dorel S., Slawinski J., Peyrot N., Saez De Villarreal E., Rabita G., A Simple Method for Measuring Power, Force and Velocity Properties of Sprint Running, (2013); Sanfilippo J.L., Silder A., Sherry M.A., Tuite M.J., Heiderscheit B.C., Hamstring strength and morphology progression after return to sport from injury, Med Sci Sports Exerc, 45, pp. 448-454, (2013); Sole G., Milosavljevic S., Nicholson H.D., Sullivan S.J., Selective strength loss and decreased muscle activity in hamstring injury, J Orthop Sports Phys Ther, 41, pp. 354-363, (2011); Sugiura Y., Saito T., Sakuraba K., Sakuma K., Suzuki E., Strength deficits identified with concentric action of the hip extensors and eccentric action of the hamstrings predispose to hamstring injury in elite sprinters, J Orthop Sports Phys Ther, 38, pp. 457-464, (2008); Warren G.L., Ingalls C.P., Lowe D.A., Armstrong R.B., What mechanisms contribute to the strength loss that occurs during and in the recovery from skeletal muscle injury?, Journal of Orthopaedic and Sports Physical Therapy, 32, 2, pp. 58-64, (2002); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., The Football Association Medical Research Programme: An audit of injuries in professional football - Analysis of hamstring injuries, British Journal of Sports Medicine, 38, 1, pp. 36-41, (2004)","J. Mendiguchia; Department of Physical Therapy, ZENTRUM Rehab and Performance Center, 31010 Barañain, Calle B nave 23 (Poligono Barañain), Spain; email: jurdan24@hotmail.com","","Georg Thieme Verlag","01724622","","IJSMD","24424959","English","Int. J. Sports Med.","Article","Final","","Scopus","2-s2.0-84903699628" "Ferry B.; Duclos M.; Burt L.; Therre P.; Le Gall F.; Jaffré C.; Courteix D.","Ferry, Beatrice (8859430300); Duclos, Martine (55134739900); Burt, Lauren (26644805900); Therre, Perrine (50562001200); Le Gall, Franck (13409352400); Jaffré, Christelle (6602666447); Courteix, Daniel (7003998389)","8859430300; 55134739900; 26644805900; 50562001200; 13409352400; 6602666447; 7003998389","Bone geometry and strength adaptations to physical constraints inherent in different sports: Comparison between elite female soccer players and swimmers","2011","Journal of Bone and Mineral Metabolism","29","3","","342","351","9","87","10.1007/s00774-010-0226-8","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79959977292&doi=10.1007%2fs00774-010-0226-8&partnerID=40&md5=b07b9f69b86305825057c06552f55ef6","Laboratoire Interuniversitaire de Biologie des APS, EA 3533, PRES Clermont Université, Université Blaise Pascal, 63177 Aubiere Cedex, 24 avenue des Landais, France; Department of Sport Medicine and Functional Explorations, CHU Clermont-Ferrand and INRA UMR 1019, CRNH-Auvergne, Clermont-Ferrand, France; French Federation of Swimming, Paris, France; French Federation of Soccer, Paris, France; Unité INSERM U698, Orléans, France; Centre of Physical Activity Across the Lifespan, Australian Catholic University, Sydney, Australia","Ferry B., Laboratoire Interuniversitaire de Biologie des APS, EA 3533, PRES Clermont Université, Université Blaise Pascal, 63177 Aubiere Cedex, 24 avenue des Landais, France; Duclos M., Department of Sport Medicine and Functional Explorations, CHU Clermont-Ferrand and INRA UMR 1019, CRNH-Auvergne, Clermont-Ferrand, France; Burt L., Centre of Physical Activity Across the Lifespan, Australian Catholic University, Sydney, Australia; Therre P., French Federation of Swimming, Paris, France; Le Gall F., French Federation of Soccer, Paris, France; Jaffré C., Unité INSERM U698, Orléans, France; Courteix D., Laboratoire Interuniversitaire de Biologie des APS, EA 3533, PRES Clermont Université, Université Blaise Pascal, 63177 Aubiere Cedex, 24 avenue des Landais, France","Sports training characterized by impacts or weight-bearing activity is well known to induce osteogenic effects on the skeleton. Less is known about the potential effects on bone strength and geometry, especially in female adolescent athletes. The aim of this study was to investigate hip geometry in adolescent soccer players and swimmers compared to normal values that stemmed from a control group. This study included 26 swimmers (SWIM; 15.9 ± 2 years) and 32 soccer players (SOC; 16.2 ± 0.7 years), matched in body height and weight. A group of 15 agematched controls served for the calculation of hip parameter Z-scores. Body composition and bone mineral density (BMD) were assessed by dual-energy X-ray absorptiometry (DXA). DXA scans were analyzed at the femoral neck by the hip structure analysis (HSA) program to calculate the cross-sectional area (CSA), cortical dimensions (inner endocortical diameter, ED; outer width and thickness, ACT), the centroid (CMP), cross-sectional moment of inertia (CSMI), section modulus (Z), and buckling ratio (BR) at the narrow neck (NN), intertrochanteric (IT), and femoral shaft (FS) sites. Specific BMDs were significantly higher in soccer players compared with swimmers. At all bone sites, every parameter reflecting strength (CSMI, Z, BR) favored soccer players. In contrast, swimmers had hip structural analysis (HSA) Z-scores below the normal values of the controls, thus denoting weaker bone in swimmers. In conclusion, this study suggests an influence of training practice not only on BMD values but also on bone geometry parameters. Sports with high impacts are likely to improve bone strength and bone geometry. Moreover, this study does not support the argument that female swimmers can be considered sedentary subjects regarding bone characteristics. © 2010 The Japanese Society for Bone and Mineral Research and Springer.","Bone geometry; Bone mineral density; Hip structure analysis; Soccer; Swimming","Adaptation, Physiological; Adolescent; Biomechanics; Body Composition; Bone and Bones; Bone Density; Calcium; Female; Femur Neck; Hip; Humans; Lumbar Vertebrae; Soccer; Swimming; adolescent; article; body composition; body height; body weight; bone strength; bone structure; controlled study; dual energy X ray absorptiometry; female; femur neck; femur shaft; football; hip; human; human experiment; physical stress; priority journal; scoring system; swimming; training","Alfredson H., Nordstrom P., Lorentzon R., Total and regional bone mass in female soccer players, Calcified Tissue International, 59, 6, pp. 438-442, (1996); Grimston S.K., Willows N.D., Hanley D.A., Mechanical loading regime and its relationship to bone mineral density in children, Medicine and Science in Sports and Exercise, 25, 11, pp. 1203-1210, (1993); Dyson K., Blimkie C.J.R., Davison K.S., Webber C.E., Adachi J.D., Gymnastic training and bone density in pre-adolescent females, Medicine and Science in Sports and Exercise, 29, 4, pp. 443-450, (1997); Courteix D., Lespessailles E., Loiseau Peres S., Obert P., Germain P., Benhamou C.L., Effect of physical training on bone mineral density in prepubertal girls: A comparative study between impact-loading and non-impact-loading sports, Osteoporosis International, 8, 2, pp. 152-158, (1998); Fuchs R.K., Bauer J.J., Snow C.M., Jumping improves hip and lumbar spine bone mass in prepubescent children: A randomized controlled trial, Journal of Bone and Mineral Research, 16, 1, pp. 148-156, (2001); Haapasalo H., Kontulainen S., Sievanen H., Kannus P., Jarvinen M., Vuori I., Exercise-induced bone gain is due to enlargement in bone size without a change in volumetric bone density: A peripheral quantitative computed tomography study of the upper arms of male tennis players, Bone, 27, 3, pp. 351-357, (2000); Heinonen A., Sievanen H., Kannus P., Oja P., Vuori I., Site-specific skeletal response to long-term weight training seems to be attributable to principal loading modality: A pQCT study of female weightlifters, Calcified Tissue International, 70, 6, pp. 469-474, (2002); Liu L., Maruno R., Mashimo T., Sanka K., Higuchi T., Hayashi K., Shirasaki Y., Mukai N., Saitoh S., Tokuyama K., Effects of physical training on cortical bone at midtibia assessed by peripheral QCT, Journal of Applied Physiology, 95, 1, pp. 219-224, (2003); Pettersson U., Nordstrom P., Alfredson H., Henriksson-Larsen K., Lorentzon R., Effect of high impact activity on bone mass and size in adolescent females: A comparative study between two different types of sports, Calcified Tissue International, 67, 3, pp. 207-214, (2000); Beck T.J., Ruff C.B., Warden K.E., Scott Jr. W.W., Rao G.U., Predicting femoral neck strength from bone mineral data: A structural approach, Investigative Radiology, 25, 1, pp. 6-18, (1990); Parfitt A.M., The two faces of growth: Benefits and risks to bone integrity, Osteoporos Int, 4, pp. 382-398, (1994); Peppler W.W., Mazess R.B., Total body bone mineral and lean body mass by dual-photon absorptiometry. I. Theory and measurement procedure, Calcified Tissue International, 33, 4, pp. 353-359, (1981); Haarbo J., Gotfredsen A., Hassager C., Christiansen C., Validation of body composition by dual energy X-ray absorptiometry (DEXA), Clin Physiol, 11, pp. 331-341, (1991); Breban S., Benhamou C.L., Chappard C., Dual-energy X-ray absorptiometry assessment of tibial mid-third bone mineral density in young athletes, J Clin Densitom, 12, pp. 22-27, (2009); Lorentzon M., Mellstrom D., Ohlsson C., Age of attainment of peak bone mass is site specific in Swedish men - The GOOD study, Journal of Bone and Mineral Research, 20, 7, pp. 1223-1227, (2005); Martin R.B., Burr D.B., Non-invasive measurement of long bone cross-sectional moment of inertia by photon absorptiometry, Journal of Biomechanics, 17, 3, pp. 195-201, (1984); Beck T.J., Petit M.A., Wu G., LeBoff M.S., Cauley J.A., Chen Z., Does obesity really make the femur stronger? BMD, geometry, and fracture incidence in the women's health initiative-observational study, J Bone Miner Res, 24, pp. 1369-1379, (2009); Bonnick S.L., HSA: Beyond BMD with DXA, Bone (NY), 41, (2007); Fardellone P., Sebert J.L., Bouraya M., Bonidan O., Leclercq G., Doutrellot C., Bellony R., Dubreuil A., Evaluation of the calcium content of diet by frequential self-questionnaire, Rev Rhum Mal Osteoartic, 58, pp. 99-103, (1991); Nikander R., Sievanen H., Heinonen A., Kannus P., Femoral neck structure in adult female athletes subjected to different loading modalities, Journal of Bone and Mineral Research, 20, 3, pp. 520-528, (2005); Zouch M., Jaffre C., Thomas T., Frere D., Courteix D., Vico L., Alexandre C., Long-term soccer practice increases bone mineral content gain in prepubescent boys, Jt Bone Spine, 75, pp. 41-49, (2008); Vicente-Rodriguez G., Ara I., Perez-Gomez J., Serrano-Sanchez J.A., Dorado C., Calbet J.A.L., High femoral bone mineral density accretion in prepubertal soccer players, Medicine and Science in Sports and Exercise, 36, 10, pp. 1789-1795, (2004); Vicente-Rodriguez G., Jimenez-Ramirez J., Ara I., Serrano-Sanchez J.A., Dorado C., Calbet J.A.L., Enhanced bone mass and physical fitness in prepubescent footballers, Bone, 33, 5, pp. 853-859, (2003); Calbet J.A.L., Dorado C., Diaz-Herrera P., Rodriguez-Rodriguez L.P., High femoral bone mineral content and density in male football (soccer) players, Medicine and Science in Sports and Exercise, 33, 10, pp. 1682-1687, (2001); Wittich A., Mautalen C.A., Oliveri M.B., Bagur A., Somoza F., Rotemberg E., Professional football (soccer) players have a markedly greater skeletal mineral content, density and size than age- and BMI-matched controls, Calcified Tissue International, 63, 2, pp. 112-117, (1998); Courteix D., Jaffre C., Lespessailles E., Benhamou L., Cumulative effects of calcium supplementation and physical activity on bone accretion in premenarchal children: A double-blind randomised placebo-controlled trial, International Journal of Sports Medicine, 26, 5, pp. 332-338, (2005); Derman O., Cinemre A., Kanbur N., Dogan M., Kilic M., Karaduman E., Effect of swimming on bone metabolism in adolescents, Turk J Pediatr, 50, pp. 149-154, (2008); Nikander R., Kannus P., Dastidar P., Hannula M., Harrison L., Cervinka T., Narra N.G., Aktour R., Arola T., Eskola H., Soimakallio S., Heinonen A., Hyttinen J., Sievanen H., Targeted exercises against hip fragility, Osteoporos Int, 20, pp. 1321-1328, (2009); Bass S.L., Saxon L., Daly R.M., Turner C.H., Robling A.G., Seeman E., Stuckey S., The effect of mechanical loading on the size and shape of bone in pre-, peri-, and postpubertal girls: A study in tennis players, Journal of Bone and Mineral Research, 17, 12, pp. 2274-2280, (2002); Robling A.G., Hinant F.M., Burr D.B., Turner C.H., Improved bone structure and strength after long-term mechanical loading is greatest if loading is separated into short bouts, Journal of Bone and Mineral Research, 17, 8, pp. 1545-1554, (2002); Seeman E., Clinical review 137: Sexual dimorphism in skeletal size, density, and strength, Journal of Clinical Endocrinology and Metabolism, 86, 10, pp. 4576-4584, (2001); Seeman E., An exercise in geometry, Journal of Bone and Mineral Research, 17, 3, pp. 373-380, (2002); Hsieh Y.-F., Robling A.G., Ambrosius W.T., Burr D.B., Turner C.H., Mechanical loading of diaphyseal bone in vivo: The strain threshold for an osteogenic response varies with location, Journal of Bone and Mineral Research, 16, 12, pp. 2291-2297, (2001); Ruff C.B., Walker A., Trinkaus E., Postcranial robusticity in homo. III: Ontogeny, American Journal of Physical Anthropology, 93, 1, pp. 35-54, (1994); DiVasta A.D., Beck T.J., Petit M.A., Feldman H.A., LeBoff M.S., Gordon C.M., Bone cross-sectional geometry in adolescents and young women with anorexia nervosa: A hip structural analysis study, Osteoporosis International, 18, 6, pp. 797-804, (2007); Duncan C.S., Blimkie C.J.R., Kemp A., Higgs W., Cowell C.T., Woodhead H., Briody J.N., Howman-Giles R., Mid-femur geometry and biomechanical properties in 15- to 18-yr-old female athletes, Medicine and Science in Sports and Exercise, 34, 4, pp. 673-681, (2002); Frost H.M., On our age-related bone loss: Insights from a new paradigm, J Bone Miner Res, 12, pp. 1539-1546, (1997); Schoenau E., Frost H.M., The ""muscle-bone unit,"" in children and adolescents, Calcif Tissue Int, 70, pp. 405-407, (2002); Courteix D., Lespessailles E., Loiseau Peres S., Obert P., Germain P., Benhamou C.L., Effect of physical training on bone mineral density in prepubertal girls: A comparative study between impact-loading and non-impact-loading sports, Osteoporosis International, 8, 2, pp. 152-158, (1998); Dook J.E., James C., Henderson N.K., Price R.I., Exercise and bone mineral density in mature female athletes, Medicine and Science in Sports and Exercise, 29, 3, pp. 291-296, (1997)","D. Courteix; Laboratoire Interuniversitaire de Biologie des APS, EA 3533, PRES Clermont Université, Université Blaise Pascal, 63177 Aubiere Cedex, 24 avenue des Landais, France; email: daniel.courteix@univ-bpclermont.fr","","","14355604","","JBMME","20963459","English","J. Bone Miner. Metab.","Article","Final","","Scopus","2-s2.0-79959977292" "Blair S.; Duthie G.; Robertson S.; Hopkins W.; Ball K.","Blair, Stephanie (55798362900); Duthie, Grant (12779255100); Robertson, Sam (55015323500); Hopkins, William (35560441800); Ball, Kevin (7101771783)","55798362900; 12779255100; 55015323500; 35560441800; 7101771783","Concurrent validation of an inertial measurement system to quantify kicking biomechanics in four football codes","2018","Journal of Biomechanics","73","","","24","32","8","74","10.1016/j.jbiomech.2018.03.031","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044392266&doi=10.1016%2fj.jbiomech.2018.03.031&partnerID=40&md5=149e8cbed77468257dcefebdd0778805","Institute for Health and Sport (IHES), Victoria University, Melbourne, Australia; School of Exercise Science, Australian Catholic University, Sydney, Australia; Defence Institute, Oslo, Norway","Blair S., Institute for Health and Sport (IHES), Victoria University, Melbourne, Australia; Duthie G., Institute for Health and Sport (IHES), Victoria University, Melbourne, Australia, School of Exercise Science, Australian Catholic University, Sydney, Australia; Robertson S., Institute for Health and Sport (IHES), Victoria University, Melbourne, Australia; Hopkins W., Institute for Health and Sport (IHES), Victoria University, Melbourne, Australia, Defence Institute, Oslo, Norway; Ball K., Institute for Health and Sport (IHES), Victoria University, Melbourne, Australia","Wearable inertial measurement systems (IMS) allow for three-dimensional analysis of human movements in a sport-specific setting. This study examined the concurrent validity of a IMS (Xsens MVN system) for measuring lower extremity and pelvis kinematics in comparison to a Vicon motion analysis system (MAS) during kicking. Thirty footballers from Australian football (n = 10), soccer (n = 10), rugby league and rugby union (n = 10) clubs completed 20 kicks across four conditions. Concurrent validity was assessed using a linear mixed-modelling approach, which allowed the partition of between and within-subject variance from the device measurement error. Results were expressed in raw and standardised units for assessments of differences in means and measurement error, and interpreted via non-clinical magnitude-based inferences. Trivial to small differences were found in linear velocities (foot and pelvis), angular velocities (knee, shank and thigh), sagittal joint (knee and hip) and segment angle (shank and pelvis) means (mean difference: 0.2–5.8%) between the IMS and MAS in Australian football, soccer and the rugby codes. Trivial to small measurement errors (from 0.1 to 5.8%) were found between the IMS and MAS in all kinematic parameters. The IMS demonstrated acceptable levels of concurrent validity compared to a MAS when measuring kicking biomechanics across the four football codes. Wearable IMS offers various benefits over MAS, such as, out-of-laboratory testing, larger measurement range and quick data output, to help improve the ecological validity of biomechanical testing and the timing of feedback. The results advocate the use of IMS to quantify biomechanics of high-velocity movements in sport-specific settings. © 2018 Elsevier Ltd","Australia football; Biomechanics; Inertial measurement system; Kicking; Rugby; Soccer","Australia; Biomechanical Phenomena; Humans; Lower Extremity; Male; Mechanical Phenomena; Movement; Soccer; Young Adult; Biomechanics; Biophysics; Codes (symbols); Kinematics; Measurement errors; Wearable technology; Australia; Inertial measurement system; Kicking; Rugby; Soccer; adult; analytic method; Article; Australian; biomechanics; concurrent validity; controlled study; ecological validity; football; hip; human; human experiment; kinematics; knee; laboratory test; male; measurement error; motion; movement (physiology); normal human; priority journal; sport; thigh; velocity; wearable inertial measurement system; Australia; biomechanics; lower limb; mechanics; movement (physiology); physiology; soccer; validation study; young adult; Sports","Atack A., Trewartha G., Bezodis N., (2017); Atkinson G., Nevill A.M., Statistical methods for assessing measurement error (reliability) in variables relevant to sports medicine, Sport Med., 26, pp. 217-238, (1998); Baker J.; Baktash S., Hy A., Muir S., Walton T., Zhang Y., The effects of different instep foot positions on ball velocity in place-kicking, Int. 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Therapy Rev., 15, pp. 462-473, (2010); De Magalhaes F.A., Vannozzi G., Gatta G., Fantozzi S., Wearable inertial sensor in swimming motion analysis: a systematic review, J. Sport Sci., 33, pp. 732-745, (2015); De Witt J.K., Hinrichs R.N., Mechanical fators associated with the development of high ball velocity during an instep soccer kick, Sport Biomech., 11, pp. 382-390, (2012); Dichiera A., Webster K.E., Kuilboer L., Morris M.E., Bach T.M., Feller J.A., Kinematic patterns associated with accuracy of the drop punt kick in Australian football, J. Sci. Med. Sport, 9, pp. 292-298, (2006); Dorge H.C., Anderson T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, J. Sport Sci., 20, pp. 293-299, (2002); Ferrari A., Cutti A.G., Garofalo P., Raggi M., Heijboer M., Cappello A., Davalli A., First in vivo assessment of “Outwalk”: a novel protocol for clinical gait analysis based on inertial and magnetic sensors, Med. Biol. 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Sports, 16, pp. 334-344, (2006); Knudson D., Bahamonde R., Effect of endpoint conditions on position and velocity near impact in tennis, J. Sport Sci., 19, pp. 839-884, (2001); Kruger A., Edelmann-Nusser J., Biomechanical analysis in freestyle snowboarding: Application of a full-body inertial measurement system and a bilateral insole measurement system, Sports Technol., 2, pp. 17-23, (2009); Lees A., Asai T., Anderson T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: a review, J. Sport Sci., 28, pp. 805-817, (2010); Inoue K., Nunome H., Sterzing T., Shinkai H., Ikegami Y., Dynamics of the support leg in soccer instep kicking, J. 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Sport Sci., pp. 1-8, (2017); Picerno P., Cereatti A., Cappozzo A., Joint kinematics estimate using wearable inertial and magnetic sensing modules, Gait Posture, 28, pp. 588-595, (2008); Phillips E., Farrow D., Ball K., Helmer R., Harnessing and understanding feedback technology in applied settings, Sports Med., 43, pp. 919-925, (2013); Quarrie K.L., Hopkins W.G., Evaluation of goal kicking performance in international rugby union matches, J. Sci. Med. Sport, 18, pp. 195-198, (2015); Reenalda J., Maartens E., Homan L., Burke J.H., Continuous three dimensional analysis of running mechanics during a marathon by means of inertial magnetic measurement units to objectify changes in running mechanics, J. Biomech., 49, pp. 3362-3367, (2016); Robert-lachaine X., Mecheri H., Larue C., Plamondon A., Validation of inertial measurement units with an optoelectronic system for whole-body motion analysis, Med. Biol. Eng. Comput., 55, pp. 609-619, (2017); Roetenberg D., Luinge H., Slycke P., Ambulatory position and orientation tracking fusing magnetic and inertial sensing, IEEE Trans. Biomed. Eng., 54, pp. 883-890, (2007); Roetenberg D., Luinge H., Slycke P., Xsens M.V., (2013); Schall M.C., Fethke N.B., Chen H., Oyama S., Douphrate D.I., Accuracy and reliability of an inertial measurement unit system for field-based occupational studies, Ergonomics, 59, pp. 1-23, (2015); Seroyer S.T., Nho S.J., Bach B.R., 2, pp. 135-146, (2010); Sinclair J., Hobbs S.J., Bilateral differences in knee and ankle loading of the support limb during maximal instep soccer kicking, Sci. Sport, 31, pp. 73-78, (2016); Sinclair J., Fewtrell D., Taylor P.J., Atkins S., Bottoms L., Hobbs S.J., Three-dimensional kinematic difference between the preferred and non-preferred limbs during maximal instep soccer kicking, J. Sport Sci., 32, pp. 1914-1923, (2014); Sinclair J., Taylor P.J., Atkins S., Bullen J., Smith A., Hobbs S.J., The influence of lower extremity kinematics on ball release velocity during in-step place kicking in rugby union, Int. J. Perform. Anal. Sport, 14, pp. 64-72, (2014); Sinclair J., Taylor P.J., Smith A., Bullen J., Bentley I., Hobbs S.J., Three-dimensional kinematic differences between accurate and high velocity kicks in rugby union place kicking, Int. J. Sports Sci. Coach., 12, pp. 371-380, (2017); Slawinski J., Bonnefoy A., Ontanon G., Leveque J.M., Miller C., Riquet A., Cheze L., Dumas, Segment-interaction in sprint start: analysis of 3D angular velocity and kinetic energy in elite sprinters, J. Biomech., 43, pp. 1494-1502, (2010); Smith T.N., Hopkins W.G., Variability and predictability of finals times of elite rowers, Med. Sci. Sports Exerc., 43, pp. 2155-2160, (2011); Takeda R., Tadano S., Natorigawa A., Todoh M., Yoshinari S., Gait posture using wearable acceleration and gyro sensors, J. Biomech., 42, pp. 2486-2494, (2009); Zhang J.J., Novak A.C., Brouwer B., Li Q., Concurrent validation of Xsens MVN measurement of lower limb joint angular kinematics, Physiol. Measure., 34, pp. 63-69, (2013); Zhang Y., Liu G., Xie S., Movement sequences during instep rugby place kick: a 3D biomechanical analysis, Int. J. Sports Sci. Eng., 6, pp. 89-95, (2012); Windolf M., Gotzen N., Morlock M., Systematic accuracy and precision analysis of video motion capturing systems – exemplified on the vicon- 460 system, J. Biomech., 41, pp. 2776-2780, (2008); Winter D., Biomechanics and Motor Control of Human Movement, (2009)","S. Blair; Office PB201, Victoria University Footscray Park Campus, Ballarat Road, Footscray, 3011, Australia; email: Stephanie.blair@vu.edu.au","","Elsevier Ltd","00219290","","JBMCB","29602475","English","J. Biomech.","Article","Final","","Scopus","2-s2.0-85044392266" "Sigward S.M.; Powers C.M.","Sigward, Susan M. (9735729200); Powers, Christopher M. (7103284208)","9735729200; 7103284208","Loading characteristics of females exhibiting excessive valgus moments during cutting","2007","Clinical Biomechanics","22","7","","827","833","6","132","10.1016/j.clinbiomech.2007.04.003","https://www.scopus.com/inward/record.uri?eid=2-s2.0-34347334420&doi=10.1016%2fj.clinbiomech.2007.04.003&partnerID=40&md5=6b72c1afe06eeee7e7097a1a4d8e47ba","Musculoskeletal Biomechanics Research Laboratory, Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 90089, CHP-155, United States","Sigward S.M., Musculoskeletal Biomechanics Research Laboratory, Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 90089, CHP-155, United States; Powers C.M., Musculoskeletal Biomechanics Research Laboratory, Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 90089, CHP-155, United States","Background: Excessive knee valgus moments are considered a risk factor for non-contact anterior cruciate ligament injuries in female athletes, however, little is known about the biomechanical factors that contribute to this loading pattern. The purpose of this study was to compare lower extremity kinematics, foot position and ground reaction forces between female soccer players who demonstrate normal frontal plane moments at the knee with those who demonstrate excessive frontal plane moments at the knee during a cutting maneuver. Methods: Sixty-one female soccer players, 16 (2) years, participated. Three dimensional kinematics and ground reaction forces were recorded during a side-step cutting maneuver. Knee frontal plane moments were calculated with inverse dynamics equations and were used to classify subjects into normal (N = 38) and excessive valgus moment (N = 23) groups. Findings: Data revealed that the subjects with excessive valgus moments demonstrated an initial loading pattern that included greater laterally directed ground reaction forces (P < 0.001, effect size 1.51), increased hip abduction (P = 0.002, effect size 0.79), increased hip internal rotation (P = 0.008, effect size 0.71) and a more internally rotated foot progression angle (P = 0.04, effect size 0.55). Taken together, these variables explained 49% of the variance in peak knee valgus moment (R = .698, P < 0.001). Interpretation: These results provide insight into potentially injurious loading strategies and support the premise that interventions designed to encourage loading of the lower extremity in a more neutral alignment may work to decrease frontal plane loading at the knee. © 2007 Elsevier Ltd. All rights reserved.","ACL; Ground reaction forces; Hip; Kinematics","Adolescent; Exertion; Female; Humans; Knee Joint; Muscle Contraction; Running; Soccer; Torque; Weight-Bearing; Health risks; Inverse kinematics; Joints (anatomy); Ligaments; Loads (forces); adolescent; anterior cruciate ligament rupture; article; athlete; computer program; female; foot; hip; human; kinematics; knee; knee injury; leg movement; loading test; major clinical study; motion analysis system; priority journal; rotation; sport; sport injury; valgus deformity; Dimensional kinematics; Female athletes; Ground reaction forces; Valgus moments; Biomechanics","Bendjaballah M.Z., Shirazi-Adl A., Zukor D.J., Finite element analysis of human knee joint in varus-valgus, Clin. Biomech., 12, pp. 139-148, (1997); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am. J. Sports Med., 30, pp. 261-267, (2002); Davis I.I.I., Ounpuu S., Tyburski D., Gage J.R., A gait analysis data collection and reduction technique, Hum. Movement Sci., 10, pp. 575-587, (1991); Ferber R., Davis I.M., Williams III D.S., Gender differences in lower extremity mechanics during running, Clin. Biomech., 18, pp. 350-357, (2003); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes. A prospective study, Am. J. Sports Med., 27, pp. 699-706, (1999); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S.J., Colosimo A.J., McLean S.G., van den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am. J. Sports Med., 33, pp. 492-501, (2005); Hewett T.E., Myer G.D., Ford K.R., Anterior cruciate ligament injuries in female athletes. Part 1. Mechanisms and risk factors, Am. J. Sports Med., 34, pp. 299-311, (2006); Hollands M.A., Sorensen K.L., Patla A.E., Effects of head immobilization on the coordination and control of head and body reorientation and translation during steering, Exp. Brain Res., 140, pp. 223-233, (2001); Ireland M.L., The female ACL: why is it more prone to injury?, Orthop. Clin. N. Am., 33, pp. 637-651, (2002); Kadaba M.P., Ramakrishnan H.K., Wootten M.E., Gainey J., Gorton G., Cochran G.V., Repeatability of kinematic, kinetic, and electromyographic data in normal adult gait, J. Orthop. Res., 7, pp. 849-860, (1989); Kadaba M.P., Ramakrishnan H.K., Wootten M.E., Measurement of lower extremity kinematics during level walking, J. Orthop. Res., 8, pp. 383-392, (1990); Leetun D.T., Ireland M.L., Willson J.D., Ballantyne B.T., Davis I.M., Core stability measures as risk factors for lower extremity injury in athletes, Med. Sci. Sports Exerc., 36, pp. 926-934, (2004); Lephart S.M., Ferris C.M., Riemann B.L., Myers J.B., Fu F.H., Gender differences in strength and lower extremity kinematics during landing, Clin. Orthop. Relat. Res., pp. 162-169, (2002); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin. Biomech., 16, pp. 438-445, (2001); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Knarr J.F., Thomas S.D., Griffin L.Y., Kirkendall D.T., Garrett Jr. W., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes: 2-year follow-up, Am. J. Sports Med., 33, pp. 1003-1010, (2005); Markolf K.L., Gorek J.F., Kabo J.M., Shapiro M.S., Direct measurement of resultant forces in the anterior cruciate ligament. An in vitro study performed with a new experimental technique, J. Bone Joint Surg. Am., 72, pp. 557-567, (1990); McLean S.G., Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: potential for injury in women, Med. Sci. Sports Exerc., 31, pp. 959-968, (1999); McLean S.G., Huang X.M., Su A., van den Bogert A.J., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clin. Biomech., 19, pp. 828-838, (2004); McLean S.G., Lipfert S.W., van den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med. Sci. Sports Exerc., 36, pp. 1008-1016, (2004); McLean S.G., Huang X., van den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clin. Biomech., 20, pp. 863-870, (2005); Myklebust G., Prevention of anterior cruciate ligament injuries in female team handball players: a prospective intervention study over three seasons, Clin. Sports Med., 13, pp. 71-78, (2003); Patla A.E., Adkin A., Ballard T., Online steering: coordination and control of body center of mass, head and body reorientation, Exp. Brain Res., 129, pp. 629-634, (1999); Pollard C.D., Sigward S.M., Powers C.M., Gender differences in hip joint kinematics and kinetics during side-step cutting maneuver, Clin. J. Sport Med., 17, pp. 38-42, (2007); Sigward S., Powers C., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clin. Biomech., 21, pp. 41-48, (2006); Woltering H.J., A Fortran package for generalized, cross-validatory spline smoothing and differentiation, Adv. Eng. Software, 8, pp. 104-113, (1986)","S.M. Sigward; Musculoskeletal Biomechanics Research Laboratory, Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 90089, CHP-155, United States; email: sigward@usc.edu","","","02680033","","CLBIE","17531364","English","Clin. Biomech.","Article","Final","","Scopus","2-s2.0-34347334420" "Havens K.L.; Sigward S.M.","Havens, Kathryn L. (54581068700); Sigward, Susan M. (9735729200)","54581068700; 9735729200","Whole body mechanics differ among running and cutting maneuvers in skilled athletes","2015","Gait and Posture","42","3","","240","245","5","75","10.1016/j.gaitpost.2014.07.022","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942297400&doi=10.1016%2fj.gaitpost.2014.07.022&partnerID=40&md5=00300fa7617386b267094e5d0783df44","Division of Biokinesiology and Physical Therapy, University of Southern California, United States","Havens K.L., Division of Biokinesiology and Physical Therapy, University of Southern California, United States; Sigward S.M., Division of Biokinesiology and Physical Therapy, University of Southern California, United States","Quick changes of direction during running (cutting) represent a whole body mechanical challenge, as they require deceleration and translation of the body during ongoing movement. While much is known with respect to whole body demands during walking turns, whole body mechanics and anticipatory adjustments necessary for cutting are unclear. As the ability to rapidly change direction is critical to athletes' success in many sports, a better understanding of whole body adjustments made during cuts is needed. Whole body center of mass velocity and position during the approach and execution steps of three tasks (straight running, 45° sidestep cut, and 90° sidestep cut) performed as fast as possible were compared in 25 healthy soccer athletes. Repeated measure ANOVA revealed that overall, braking and translation were greater during the cuts compared to the straight run. Interestingly, with systematically increased cut angle, disproportionately greater braking but proportionately greater translation was observed. Anticipatory adjustments made prior to the execution of the cuts suggested that individuals evenly distributed the deceleration and redirection demands across steps of the 45° cut but prioritized deceleration over translation during the approach step of the 90° cut. © 2014 Elsevier B.V.","Anticipatory postural adjustments; Cutting; Dynamic stability; Turning; Whole body mechanics","Adult; Biomechanical Phenomena; Deceleration; Female; Humans; Male; Posture; Running; Soccer; Young Adult; acceleration; adult; Article; athlete; biomechanics; female; ground reaction force; human; human experiment; male; movement (physiology); normal human; priority journal; running; velocity; walking; whole body mechanics; young adult; biomechanics; body posture; deceleration; physiology; running; soccer","Hase K., Stein R.B., Turning strategies during human walking, J Neurophysiol, 81, pp. 2914-2922, (1999); Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in FA Premier League soccer, J Sport Sci Med, 6, pp. 63-70, (2007); Bloomfield J., Polman R., O'Donoghue P., Turning movements performed during FA Premier League soccer matches, J Sport Sci Med, 6, (2007); Sheppard J.M., Young W.B., Agility literature review: classifications, training and testing, J Sports Sci, 24, pp. 919-932, (2006); Dellal A., Keller D., Carling C., Chaouachi A., Wong D.P., Chamari K., Physiologic effects of directional changes in intermittent exercise in soccer players, J Strength Cond Res, 24, pp. 3219-3226, (2010); Reilly T., Williams A.M., Nevill A., Franks A., A multidisciplinary approach to talent identification in soccer, J Sports Sci, 18, pp. 695-702, (2000); Gil S., Ruiz F., Irazusta A., Gil J., Irazusta J., Selection of young soccer players in terms of anthropometric and physiological factors, J Sports Med Phys Fit, 47, pp. 25-32, (2007); Glaister B.C., Orendurff M.S., Schoen J.A., Bernatz G.C., Klute G.K., Ground reaction forces and impulses during a transient turning maneuver, J Biomech, 41, pp. 3090-3093, (2008); Patla A.E., Prentice S.D., Robinson C., Neufeld J., Visual control of locomotion-strategies for changing direction and for going over obstacles, J Exp Psychol Hum Percept Perform, 17, pp. 603-634, (1991); Strike S.C., Taylor M.J.D., The temporal-spatial and ground reaction impulses of turning gait: is turning symmetrical, Gait Posture, 29, pp. 597-602, (2009); Houck J., Muscle activation patterns of selected lower extremity muscles during stepping and cutting tasks, J Electromyogr Kinesiol, 13, pp. 545-554, (2003); Xu D.L., Rosengren K.S., Carlton L.G., Anticipatory postural adjustments for altering direction during walking, J Mot Behav, 36, pp. 316-326, (2004); Patla A.E., Adkin A., Ballard T., Online steering: coordination and control of body center of mass, head and body reorientation, Exp Brain Res, 129, pp. 629-634, (1999); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1168-1175, (2001); Sigward S., Cesar G., Havens K.L., Predictors of frontal plane knee moments during side-step cutting to 45° and 110° in men and women: implications for ACL injury, Clin J Sport Med, (2014); Besier T.F., Lloyd D.G., Ackland T.R., Cochrane J.L., Anticipatory effects on knee joint loading during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1176-1181, (2001); Houck J.R., Duncan A., De Haven K.E., Comparison of frontal plane trunk kinematics and hip and knee moments during anticipated and unanticipated walking and side step cutting tasks, Gait Posture, 24, pp. 314-322, (2006); Song J., Sigward S., Fisher B., Salem G., Altered dynamic postural control during step turning in persons with early-stage Parkinson's disease, Park Dis, 2012, (2012); Dempster W.T., Space requirements of the seated operator. Geometrical, kinematic, and mechanical aspects of the body with special reference to the limbs. Tech Report, pp. 1-254, (1955); Glaister B.C., Orendurff M.S., Schoen J.A., Klute G.K., Rotating horizontal ground reaction forces to the body path of progression, J Biomech, 40, pp. 3527-3532, (2007); Zatsiorsky V.M., Kinetics of human motion, (2002); Hof A., Gazendam M., Sinke W., The condition of dynamic stability, J Biomech, 38, pp. 1-8, (2005); Pai Y.C., Patton J., Center of mass velocity-position predictions for balance control, J Biomech, 30, pp. 347-354, (1997)","","","Elsevier","09666362","","GAPOF","25149902","English","Gait Posture","Article","Final","","Scopus","2-s2.0-84942297400" "Horn R.R.; Williams A.M.; Scott M.A.","Horn, Robert R. (8644216800); Williams, A. Mark (35580552000); Scott, Mark A. (7403480952)","8644216800; 35580552000; 7403480952","Learning from demonstrations: The role of visual search during observational learning from video and point-light models","2002","Journal of Sports Sciences","20","3","","253","269","16","73","10.1080/026404102317284808","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036207130&doi=10.1080%2f026404102317284808&partnerID=40&md5=269dfdfd2a67e00717e81594d9973432","Res. Inst. for Sport/Exercise Sci., Liverpool John Moores University, Henry Cotton Campus, Liverpool L3 2ET, 15-21 Webster Street, United Kingdom","Horn R.R., Res. Inst. for Sport/Exercise Sci., Liverpool John Moores University, Henry Cotton Campus, Liverpool L3 2ET, 15-21 Webster Street, United Kingdom; Williams A.M., Res. Inst. for Sport/Exercise Sci., Liverpool John Moores University, Henry Cotton Campus, Liverpool L3 2ET, 15-21 Webster Street, United Kingdom; Scott M.A., Res. Inst. for Sport/Exercise Sci., Liverpool John Moores University, Henry Cotton Campus, Liverpool L3 2ET, 15-21 Webster Street, United Kingdom","In this study, we examined the visual search strategies used during observation of video and point-light display models. We also assessed the relative effectiveness of video and point-light models in facilitating the learning of task outcomes and movement patterns. Twenty-one female novice soccer players were divided equally into video, point-light display and no-model (control) groups. Participants chipped a soccer ball onto a target area from which radial and variable error scores were taken. Kinematic data were also recorded using an opto-electrical system. Both a pre- and post-test were performed, interspersed with three periods of acquisition and observation of the model. A retention test was completed 2 days after the post-test. There was a significant main effect for test period for outcome accuracy and variability, but observation of a model did not facilitate outcome-based learning. Participants observing the models acquired a global movement pattern that was closer to that of the model than the controls, although they did not acquire the local relations in the movement pattern, evidenced by joint range of motion and angle-angle plots. There were no significant differences in learning between the point-light display and video groups. The point-light display model group used a more selective visual search pattern than the video model group, while both groups became more selective with successive trials and observation periods. The results are discussed in the context of Newell's hierarchy of coordination and control and Scully and Newell's visual perception perspective.","Coordination; Modelling; Soccer chip","Adult; Analysis of Variance; Biomechanics; Female; Humans; Learning; Movement; Probability; Prospective Studies; Psychomotor Performance; Reaction Time; Soccer; Task Performance and Analysis; Video Recording; Visual Perception; accuracy; article; comparative study; controlled study; electrical equipment; female; human; human experiment; joint function; kinematics; learning; motor performance; movement (physiology); nonbiological model; normal human; observation; outcomes research; perception; scoring system; sport; task performance; variance; velocity; videorecording; visual system function; visuomotor coordination","Barclay C.D., Cutting J.E., Kozlowski L.T., Temporal and spatial factors in gait perception that influence gender recognition, Perception and Psychophysics, 23, pp. 145-152, (1978); Bandura A., Principles of Behavior Modification, (1969); 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Runeson S., Frykolm G., Visual perception of a lifted weight, Journal of Experimental Psychology: Human Perception and Performance, 7, pp. 733-740, (1981); Runeson S., Frykolm G., Kinematic specification of dynamics as an informational basis for person-and-action perception, Journal of Experimental Psychology: General, 112, pp. 589-615, (1983); Scully D.M., Visual perception of aesthetic quality and technical execution in biological motion, Human Movement Science, 5, pp. 185-206, (1986); Scully D.M., Carnegie E., Observational learning in motor skills acquisition: A look at demonstrations, Irish Journal of Psychology, 19, pp. 472-485, (1998); Scully D.M., Newell K.M., The acquisition of motor skills: Toward a visual perception perspective, Journal of Human Movement Studies, 12, pp. 169-187, (1985); Sheffield F.D., Theoretical considerations in the learning of complex tasks from demonstrations and practice, Student Response in Programmed Instruction, pp. 13-32, (1961); Singer R.N., Williams A.M., Frehlich S.G., Janelle C.M., Radlo S.J., Barba D.A., Bouchard L.J., New frontiers in visual search: An exploratory study in live tennis situations, Research Quarterly for Exercise and Sport, 69, pp. 290-296, (1998); Southard D., Higgins T., Changing movement patterns: Effects of demonstration and practice, Research Quarterly for Exercise and Sport, 58, pp. 77-80, (1987); Swinnen S.P., Information feedback for motor skill learning: A review, Advances in Motor Learning and Control, pp. 37-65, (1996); Turvey M.T., Coordination, American Psychologist, 45, pp. 938-953, (1990); Vickers J.N., Gaze control in putting, Perception, 21, pp. 117-132, (1992); Vickers J.N., Control of visual attention during the basketball free throw, American Journal of Sports Medicine, 24, (1996); Weeks D.L., Anderson L.P., The interaction of observational learning with overt practice: Effects on motor skill learning, Acta Psychologica, 104, pp. 259-271, (2000); Weise-Bjornstal D.M., Weiss M.R., Modeling effects on children's form kinematics, performance outcome, and cognitive recognition of a sport skill: An integrated perspective, Research Quarterly for Exercise and Sport, 63, pp. 67-75, (1992); Wickstrom R.L., Developmental kinesiology, Exercise and Sport Science Reviews, 3, pp. 163-192, (1975); Williams A.M., Davids K., Eye movements and visual perception in sport, Coaching Focus, 26, pp. 6-9, (1994); Williams A.M., Davids K., Visual search strategy, selective attention and expertise in soccer, Research Quarterly for Exercise and Sport, 69, pp. 111-129, (1998); Williams A.M., Davids K., Burwitz L., Visual search strategies of experienced and inexperienced soccer players, Research Quarterly for Exercise and Sport, 65, pp. 127-135, (1994); Williams A.M., Davids K., Williams J.G., Visual Perception and Action in Sport, (1999); Williams J.G., Throwing action from full-cue and motion only video models of an arm movement sequence, Perceptual and Motor Skills, 68, pp. 259-266, (1989); Williams J.G., Visual demonstration and movement production: Effects of timing variations of a model's actions, Perceptual and Motor Skills, 68, pp. 891-896, (1989); Williams J.G., Motor skill instruction: Visual demonstration and eye movements, Physical Education Review, 12, pp. 49-55, (1989); Williams J.G., Motoric modeling: Theory and research, Journal of Human Movement Studies, 25, pp. 237-279, (1993); Winter D.A., Biomechanics and Motor Control of Human Movement, 2nd edn, (1990)","A.M. Williams; Res. Inst. for Sport/Exercise Sci., Liverpool John Moores University, Henry Cotton Campus, Liverpool L3 2ET, 15-21 Webster Street, United Kingdom; email: m.williams@livjm.ac.uk","","","02640414","","JSSCE","11999480","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-0036207130" "Tomeo E.; Cesari P.; Aglioti S.M.; Urgesi C.","Tomeo, Enzo (55891427800); Cesari, Paola (6603755678); Aglioti, Salvatore M. (7007006465); Urgesi, Cosimo (9742147000)","55891427800; 6603755678; 7007006465; 9742147000","Fooling the kickers but not the goalkeepers: Behavioral and neurophysiological correlates of fake action detection in soccer","2013","Cerebral Cortex","23","11","","2765","2778","13","90","10.1093/cercor/bhs279","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879990375&doi=10.1093%2fcercor%2fbhs279&partnerID=40&md5=85bb82b73eeb2a460c5448b09bc98b4c","Dipartimento di Scienze Umane, Università di Udine, I-33100 Udine, via Margreth, 3, Italy; Dipartimento di Scienze Neurologiche, Neurofisiologiche e Morfologiche, Facoltà di Scienze Motorie, Università di Verona, Verona, Italy; Dipartimento di Psicologia, Sapienza Università di Roma, I-00185 Roma, Italy; Istituto di Ricovero e Cura A Carattere Scientifico Fondazione S. Lucia, I-00179 Roma, Italy; Istituto di Ricovero e Cura A Carattere Scientifico E. Medea, Polo Friuli Venezia Giulia, San Vito Al Tagliamento, Pordenone, Italy","Tomeo E., Dipartimento di Scienze Umane, Università di Udine, I-33100 Udine, via Margreth, 3, Italy; Cesari P., Dipartimento di Scienze Neurologiche, Neurofisiologiche e Morfologiche, Facoltà di Scienze Motorie, Università di Verona, Verona, Italy; Aglioti S.M., Dipartimento di Psicologia, Sapienza Università di Roma, I-00185 Roma, Italy, Istituto di Ricovero e Cura A Carattere Scientifico Fondazione S. Lucia, I-00179 Roma, Italy; Urgesi C., Dipartimento di Scienze Umane, Università di Udine, I-33100 Udine, via Margreth, 3, Italy, Istituto di Ricovero e Cura A Carattere Scientifico E. Medea, Polo Friuli Venezia Giulia, San Vito Al Tagliamento, Pordenone, Italy","Studies demonstrate that elite athletes are able to extract kinematic information of observed domain-specific actions to predict their future course. Little is known, however, on the perceptuo-motor processes and neural correlates of the athletes' ability to predict fooling actions. Combining psychophysics and transcranial magnetic stimulation, we explored the impact of motor and perceptual expertise on the ability to predict the fate of observed actual or fake soccer penalty kicks. We manipulated the congruence between the model's body kinematics and the subsequent ball trajectory and investigated the prediction performance and cortico-spinal reactivity of expert kickers, goalkeepers, and novices. Kickers and goalkeepers outperformed novices by anticipating the actual kick direction from the model's initial body movements. However, kickers were more often fooled than goalkeepers and novices in cases of incongruent actions. Congruent and incongruent actions engendered a comparable facilitation of kickers' lower limb motor representation, but their neurophysiological response was correlated with their greater susceptibility to be fooled. Moreover, when compared with actual actions, motor facilitation for incongruent actions was lower among goalkeepers and higher among novices. Thus, responding to fooling actions requires updation of simulative motor representations of others' actions and is facilitated by visual rather than by motor expertise. © 2012 The Author.","action prediction; deceptive actions; mirror neurons; sport; transcranial magnetic stimulation","Adolescent; Adult; Biomechanical Phenomena; Evoked Potentials, Motor; Humans; Male; Photic Stimulation; Psychomotor Performance; Psychophysics; Reaction Time; Soccer; Transcranial Magnetic Stimulation; Visual Perception; Young Adult; action prediction; deceptive actions; mirror neurons; sport; transcranial magnetic stimulation; adult; arm muscle; article; athlete; athletic performance; body movement; controlled study; corticospinal motor; decision making; electromyography; evoked muscle response; extensor muscle; forearm; gastrocnemius muscle; human; human experiment; kinematics; left handedness; leg muscle; male; motor activity; musculoskeletal function; neurophysiology; normal human; priority journal; psychomotor activity; psychophysics; punishment; right handedness; soccer; social behavior; tibialis anterior muscle; transcranial magnetic stimulation; videorecording","Abe N., The neurobiology of deception: Evidence from neuroimaging and loss-of-function studies, Curr Opin Neurol, 22, pp. 594-600, (2009); Abernethy B., Zawi K., Pickup of essential kinematics underpins expert perception of movement patterns, Journal of Motor Behavior, 39, 5, pp. 353-367, (2007); Abernethy B., Zawi K., Jackson R.C., Expertise and attunement to kinematic constraints, Perception, 37, pp. 931-948, (2008); Abreu A.M., MacAluso E., Azevedo R., Cesari P., Urgesi C., Aglioti S.M., Action anticipation beyond the action observation network: An fMRI study in expert basketball players, Eur J Neurosci, 35, pp. 1646-1654, (2012); Aglioti S.M., Cesari P., Romani M., Urgesi C., Action anticipation and motor resonance in elite basketball players, Nat Neurosci, 11, pp. 1109-1116, (2008); Alaerts K., Heremans E., Swinnen S.P., Wenderoth N., How are observed actions mapped to the observer's motor system? 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Wiggett A.J., Hudson M., Clifford A., Tipper S.P., Downing P.E., Doing, seeing, or both: Effects of learning condition on subsequent action perception, Soc Neurosci, (2012); Wilson M., Knoblich G., The case for motor involvement in perceiving conspecifics, Psychol Bull, 131, (2005); Wolpert D.M., Doya K., Kawato M., A unifying computational framework for motor control and social interaction, Philosophical Transactions of the Royal Society B: Biological Sciences, 358, 1431, pp. 593-602, (2003); Zago M., Lacquaniti F., Cognitive, perceptual and action-oriented representations of falling objects, Neuropsychologia, 43, pp. 178-188, (2005)","C. Urgesi; Dipartimento di Scienze Umane, Università di Udine, I-33100 Udine, via Margreth, 3, Italy; email: cosimo.urgesi@uniud.it","","","14602199","","CECOE","22941722","English","Cereb. Cortex","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84879990375" "Kellis E.; Katis A.; Gissis I.","Kellis, Eleftherios (6603815400); Katis, Athanasios (23135001400); Gissis, Ioannis (13607958300)","6603815400; 23135001400; 13607958300","Knee biomechanics of the support leg in soccer kicks from three angles of approach","2004","Medicine and Science in Sports and Exercise","36","6","","1017","1028","11","75","10.1249/01.MSS.0000128147.01979.31","https://www.scopus.com/inward/record.uri?eid=2-s2.0-2642527046&doi=10.1249%2f01.MSS.0000128147.01979.31&partnerID=40&md5=27685e1b11cc5823b8a27e284f5f6f9f","Dept. of Phys. Educ. and Sports Sci., Aristotle University of Thessaloniki, Serres, Greece; Dept. of Phys. Educ. and Sport Sci., Aristotle University of Thessaloniki, TEFAA Serres, Serres, 62100, Greece","Kellis E., Dept. of Phys. Educ. and Sports Sci., Aristotle University of Thessaloniki, Serres, Greece, Dept. of Phys. Educ. and Sport Sci., Aristotle University of Thessaloniki, TEFAA Serres, Serres, 62100, Greece; Katis A., Dept. of Phys. Educ. and Sports Sci., Aristotle University of Thessaloniki, Serres, Greece; Gissis I., Dept. of Phys. Educ. and Sports Sci., Aristotle University of Thessaloniki, Serres, Greece","Purpose: To examine knee joint kinematics, electromyographic (EMG) activity patterns and ground reaction forces (GRF) during an instep soccer kick from three different approaches relative to the ball. Methods: Ten male soccer players performed maximum kicks from 0 rad (K0), 0.81 rad (K45), and 1.62 rad (K90) angle between the players' starting position and the position of the ball. GRF data and 3-D kinematics and EMG activity of the vastus medialis (VM), vastus lateralis (VL), and biceps femoris (BF) muscles of the lower leg were recorded. Results: Compared with K0, K90, and K45 demonstrated higher medial and posterior GRF and lower anterior GRF. K90 and K45 also demonstrated higher external rotation displacement, maximum flexion, internal rotation, abduction, and adduction velocity of the tibia relative to the femur of the support leg compared with K0 (P < 0.01). The BF EMG before and immediately after ground contact was also higher in K90 and K45 compared with K0 (P < 0.01). Conclusion: Soccer kicks using a high angle of approach increase the medial and posterior GRF, which is indicative of an altered stance during the kick, resulting in an altered balance. Such kicks are accompanied by significant alterations in knee joint kinematics and an increased BF activation around ground contact. Soccer kicks from an angled approach may induce significant loads to knee joint structures of the support leg.","EMG; Ground reaction force; Instep soccer kick; Kinematics; Knee joint; Sports performance","Adult; Biomechanics; Electromyography; Greece; Humans; Knee; Reproducibility of Results; Soccer; adult; article; athlete; biceps brachii muscle; biomechanics; controlled study; electromyogram; femur; force; human; kinematics; knee; knee function; lower leg; male; motion; normal human; recording; sport; three dimensional imaging; tibia; vastus lateralis muscle; vastus medialis muscle","Bencke J., Naesborg H., Simonsen E., Klausen K., Motor pattern of the knee joint muscles during side-step cutting in European team handball, Scand. J. Med. Sci. Sports, 10, pp. 68-77, (2000); Besier T., Lloyd D., Ackland T., Muscle activation strategies at the knee during running and cutting maneuvers, Med. Sci. 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Sports Exerc., 31, pp. 959-968, (1999); Mcnair P.J., Marshall R.N., Landing characteristics in subjects with normal and anterior cruciate ligament deficient knee joints, Arch. Phys. Med. Rehabil., 75, pp. 584-589, (1994); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med. Sci. Sports Exerc., 34, pp. 2028-2036, (2002); Opavsky P., An investigation of linear and angular kinematics of the leg during two types of soccer kick, Science and Football, pp. 456-459, (1988); Patla A., Adkin A., Ballard T., Online steering: Coordination and control of body center of mass, head and body reorientation, Exp. Neurol., 101, pp. 313-326, (1999); Perneger T.V., What's wrong with Bonferroni adjustments, Br. Med. J., 316, pp. 1236-1238, (1998); Rahnama N., Reilly T., Lees A., Injury risk associated with playing actions during competitive soccer, Br. J. Sport Med., 36, pp. 354-359, (2002); Rand M., Ohtsuki T., EMG analysis of lower limb muscles in humans during quick change in running directions, Gait Posture, 12, pp. 169-183, (2000); Rees R., Van Der Meer C., Coaching Soccer Successfully, pp. 20-53, (1997); Roberts E., Metcalfe A., Mechanical analysis of kicking, Biomechanics I, pp. 315-319, (1968); Rodano R., Cova P., Vigano R., Designing a football boot: A theoretical and experimental approach, Science and Football, pp. 416-425, (1988); Smith N., Dyson R., Hale T., The effects of sole configuration on ground reaction force measured on natural turf during soccer specific actions, Science and Soccer IV, pp. 44-52, (2002); Thomas J.R., Nelson J.K., Research Methods in Physical Activity, pp. 343-363, (1990); Tibone J.E., Antich T.J., Fanton G.S., Moynes D.R., Perry J., Functional analysis of anterior cruciate ligament instability, Am. J. Sports Med., 14, pp. 276-282, (1986); The Official Rules of Soccer, pp. 6-25, (2002); Withers R., Maricic Z., Wasilewski Z., Kelly L., Match analysis of Australian professional soccer players, J. Hum. Mov. Stud., 8, pp. 159-176, (1982); Zatsiorski V., Kinematics of Human Motion, pp. 42-48, (1998)","E. Kellis; Dept. of Phys. Educ. and Sport Sci., Aristotle University of Thessaloniki, TEFAA Serres, Serres, 62100, Greece; email: ekellis@phed-sr.auth.gr","","","01959131","","MSCSB","15179172","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-2642527046" "Zebis M.K.; Bencke J.; Andersen L.L.; Døssing S.; Alkjær T.; Magnusson S.P.; Kjær M.; Aagaard P.","Zebis, Mette K. (16641697800); Bencke, Jesper (6602699399); Andersen, Lars L (26634786600); Døssing, Simon (8681448900); Alkjær, Tine (6603223483); Magnusson, S Peter (55667462400); Kjær, Michael (26424698800); Aagaard, Per (55043777500)","16641697800; 6602699399; 26634786600; 8681448900; 6603223483; 55667462400; 26424698800; 55043777500","The effects of neuromuscular training on knee joint motor control during sidecutting in female elite soccer and handball players","2008","Clinical Journal of Sport Medicine","18","4","","329","337","8","130","10.1097/JSM.0b013e31817f3e35","https://www.scopus.com/inward/record.uri?eid=2-s2.0-49049107409&doi=10.1097%2fJSM.0b013e31817f3e35&partnerID=40&md5=fac470fb42457fc5797aa58b3134bd74","National Research Centre for the Working Environment, Copenhagen, Denmark; Institute of SportsMedicine, Copenhagen, Denmark; Gait Laboratory, Hvidovre University Hospital, Copenhagen, Denmark; Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark; Institute of Sports Sciences and Clinical Biomechanics, University of Southern Denmark, Copenhagen, Denmark; Building 8, DK-2400 Copenhagen NV, Bakke 23, Denmark","Zebis M.K., National Research Centre for the Working Environment, Copenhagen, Denmark, Institute of SportsMedicine, Copenhagen, Denmark, Building 8, DK-2400 Copenhagen NV, Bakke 23, Denmark; Bencke J., Gait Laboratory, Hvidovre University Hospital, Copenhagen, Denmark; Andersen L.L., National Research Centre for the Working Environment, Copenhagen, Denmark; Døssing S., Institute of SportsMedicine, Copenhagen, Denmark; Alkjær T., Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark; Magnusson S.P., Institute of SportsMedicine, Copenhagen, Denmark; Kjær M., Institute of SportsMedicine, Copenhagen, Denmark; Aagaard P., Institute of Sports Sciences and Clinical Biomechanics, University of Southern Denmark, Copenhagen, Denmark","Objective: The project aimed to implement neuromuscular training during a full soccer and handball league season and to experimentally analyze the neuromuscular adaptation mechanisms elicited by this training during a standardized sidecutting maneuver known to be associated with non-contact anterior cruciate ligament (ACL) injury. Design: The players were tested before and after 1 season without implementation of the prophylactic training and subsequently before and after a full season with the implementation of prophylactic training. Participants: A total of 12 female elite soccer players and 8 female elite team handball players aged 26 ± 3 years at the start of the study. Intervention: The subjects participated in a specific neuromuscular training program previously shown to reduce non-contact ACL injury. Methods: Neuromuscular activity at the knee joint, joint angles at the hip and knee, and ground reaction forces were recorded during a sidecutting maneuver. Neuromuscular activity in the prelanding phase was obtained 10 and 50 ms before foot strike on a force plate and at 10 and 50 ms after foot strike on a force plate. Results: Neuromuscular training markedly increased before activity and landing activity electromyography (EMG) of the semitendinosus (P < 0.05), while quadriceps EMG activity remained unchanged. Conclusions: Neuromuscular training increased EMG activity for the medial hamstring muscles, thereby decreasing the risk of dynamic valgus. This observed neuromuscular adaptation during sidecutting could potentially reduce the risk for non-contact ACL injury. © 2008 by Lippincott Williams and Wilkins.","ACL; CMJ; Dynamic valgus; Gluteus medius; Hamstrings; Prevention; Prophylactic intervention; Quadriceps; Surface EMG; Test-retest","Adult; Anterior Cruciate Ligament; Athletic Injuries; Biomechanics; Cohort Studies; Electromyography; Female; Hip Joint; Humans; Knee Joint; Muscle, Skeletal; Physical Education and Training; Range of Motion, Articular; Soccer; Sports; adult; anterior cruciate ligament injury; article; athlete; controlled study; electromyography; female; foot; force; ground reaction force; hamstring; human; human experiment; jumping; knee; motor control; neuromuscular function; normal human; priority journal; prophylaxis; quadriceps femoris muscle; semitendinous muscle; sport; team sport; training; anterior cruciate ligament; biomechanics; cohort analysis; hip; injury; joint characteristics and functions; methodology; physical education; physiology; skeletal muscle; sport; sport injury","Malinzak R.A., Colby S.M., Kirkendall D.T., Et al., A comparison of knee joint motion patterns between men and women in selected athletic tasks, C lin Biomech (Bristol, Avon), 16, pp. 438-445, (2001); Ostenberg A., Roos H., Injury risk factors in female European football. A prospective study of 123 players during one season, Scand J Med Sci Sports, 10, pp. 279-285, (2000); Charlton W.P., St John T.A., Ciccotti M.G., Et al., Differences in femoral notch anatomy between men and women: A magnetic resonance imaging study, Am J Sports Med, 30, pp. 329-333, (2002); Heiderscheit B.C., Hamill J., Caldwell G.E., Influence of Q-angle on lower-extremity running kinematics, J Orthop Sports Phys Ther, 30, pp. 271-278, (2000); Ireland M.L., Ballantyne B.T., Little K., Et al., A radiographic analysis of the relationship between the size and shape of the intercondylar notch and anterior cruciate ligament injury, Knee Surg Sports Traumatol Arthrosc, 9, pp. 200-205, (2001); Rozzi S.L., Lephart S.M., Gear W.S., Et al., Knee joint laxity and neuromuscular characteristics of male and female soccer and basketball players, Am J Sports Med, 27, pp. 312-319, (1999); Wojtys E.M., Huston L.J., Lindenfeld T.N., Et al., Association between the menstrual cycle and anterior cruciate ligament injuries in female athletes, Am J Sports Med, 26, pp. 614-619, (1998); Olsen O.E., Myklebust G., Engebretsen L., Et al., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med, 32, pp. 1002-1012, (2004); Hewett T.E., Ford K.R., Myer G.D., Et al., Gender differences in hip adduction motion and torque during a single-leg agility maneuver, J Orthop Res, 24, pp. 416-421, (2006); Myer G.D., Ford K.R., Hewett T.E., The effects of gender on quadriceps muscle activation strategies during a maneuver that mimics a high ACL injury risk position, J Electromyogr Kinesiol, 15, pp. 181-189, (2005); Huston L.J., Vibert B., Ashton-Miller J.A., Et al., Gender differences in knee angle when landing from a drop-jump, Am J Knee Surg, 14, pp. 215-219, (2001); Lephart S.M., Ferris C.M., Riemann B.L., Et al., Gender differences in strength and lower extremity kinematics during landing, Clin Orthop, pp. 162-169, (2002); Draganich L.F., Vahey J.W., An in vitro study of anterior cruciate ligament strain induced by quadriceps and hamstrings forces, J Orthop Res, 8, pp. 57-63, (1990); Hirokawa S., Solomonow M., Lu Y., Et al., Anterior-posterior and rotational displacement of the tibia elicited by quadriceps contraction, Am J Sports Med, 20, pp. 299-306, (1992); More R.C., Karras B.T., Neiman R., Et al., Hamstrings-an anterior cruciate ligament protagonist. An in vitro study, Am J Sports Med, 21, pp. 231-237, (1993); Aagaard P., Simonsen E.B., Andersen J.L., Et al., Antagonist muscle coactivation during isokinetic knee extension [see comments], Scand J Med Sci Sports, 10, pp. 58-67, (2000); Nyland J.A., Caborn D.N., Shapiro R., Et al., Hamstring extensibility and transverse plane knee control relationship in athletic women, Knee Surg Sports Traumatol Arthrosc, 7, pp. 257-261, (1999); Solomonow M., Baratta R., Zhou B.H., Et al., The synergistic action of the anterior cruciate ligament and thigh muscles in maintaining joint stability, Am J Sports Med, 15, pp. 207-213, (1987); Solomonow M., Krogsgaard M., Sensorimotor control of knee stability. A review, Scand J Med Sci Sports, 11, pp. 64-80, (2001); Dyhre-Poulsen P., Krogsgaard M.R., Muscular reflexes elicited by electrical stimulation of the anterior cruciate ligament in humans, J Appl Physiol, 89, pp. 2191-2195, (2000); Johansson H., Sjolander P., Sojka P., Receptors in the knee joint ligaments and their role in the biomechanics of the joint, Crit Rev Biomed Eng, 18, pp. 341-368, (1991); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Et al., The effect of neuromuscular training on the incidence of knee injury in female athletes. A prospective study, Am J Sports Med, 27, pp. 699-706, (1999); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Et al., ACL prevention strategies in the female athlete and soccer: Implementation of a neuromuscular training program to determine its efficacy on the incidence of ACL injury, (2002); Myklebust G., Engebretsen L., Braekken I.H., Et al., Prevention of anterior cruciate ligament injuries in female team handball players: A prospective intervention study over three seasons, Clin J Sport Med, 13, pp. 71-78, (2003); Olsen O.E., Myklebust G., Engebretsen L., Et al., Exercises to prevent lower limb injuries in youth sports: Cluster randomised controlled trial, BMJ, 330, (2005); Petersen W., Braun C., Bock W., Et al., A controlled prospective case control study of a prevention training program in female team handball players: The German experience, Arch Orthop Trauma Surg, 125, pp. 614-621, (2005); Wojtys E.M., Hannafin J.A., Griffin L.Y., ACL injuries in female athletes, pp. 120-121, (2001); Caraffa A., Cerulli G., Projetti M., Et al., Prevention of anterior cruciate ligament injuries in soccer. A prospective controlled study of pro-prioceptive training, Knee Surg Sports Traumatol Arthrosc, 4, pp. 19-21, (1996); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Et al., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes: 2-year follow-up, Am J Sports Med, 33, pp. 1003-1010, (2005); Aagaard P., Simonsen E.B., Andersen J.L., Et al., Neural inhibition during maximal eccentric and concentric quadriceps contraction: Effects of resistance training, J Appl Physiol, 89, pp. 2249-2257, (2000); Aagaard P., Simonsen E.B., Andersen J.L., Et al., Increased rate of force development and neural drive of human skeletal muscle following resistance training, J Appl Physiol, 93, pp. 1318-1326, (2002); Andersen L.L., Andersen J.L., Magnusson S.P., Et al., Neuromuscular adaptations to detraining following resistance training in previously untrained subjects, Eur J Appl Physiol, 93, pp. 511-518, (2005); Narici M.V., Hoppeler H., Kayser B., Et al., Human quadriceps cross-sectional area, torque and neural activation during 6 months strength training, Acta Physiol Scand, 157, pp. 175-186, (1996); Suetta C., Aagaard P., Rosted A., Et al., Training-induced changes in muscle CSA, muscle strength, EMG, and rate of force development in elderly subjects after long-term unilateral disuse, J Appl Physiol, 97, pp. 1954-1961, (2004); Winter D.A., Biomechanics and Motor Control of Human Movement, (1990); Farrell M., Richards J.G., Analysis of the reliability and validity of the kinetic communicator exercise device, Med Sci Sports Exerc, 18, pp. 44-49, (1986); Munro B.H., Statistical Methods for Health Care Research, (1997); Simonsen E.B., Magnusson S.P., Bencke J., Et al., Can the hamstring muscles protect the anterior cruciate ligament during a side-cutting maneuver?, Scand J Med Sci Sports, 10, pp. 78-84, (2000); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Besier T.F., Lloyd D.G., Ackland A.T., Et al., Anticipatory effects on knee joint loading during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1176-1181, (2001); Kain C.C., McCarthy J.A., Arms S., Et al., An in vivo analysis of the effect of transcutaneous electrical stimulation of the quadriceps and hamstrings on anterior cruciate ligament deformation, Am J Sports Med, 16, pp. 147-152, (1988); Bencke J., Naesborg H., Simonsen E.B., Et al., Motor pattern of the knee joint muscles during side-step cutting in European team handball. Influence on muscular co-ordination after an intervention study, Scand J Med Sci Sports, 10, pp. 68-77, (2000); Cowling E.J., Steele J.R., Is lower limb muscle synchrony during landing affected by gender? Implications for variations in ACL injury rates, J Electromyogr Kinesiol, 11, pp. 263-268, (2001); Bencke J., Krogshede C., Christensen J.N., Et al., Kinetic analysis of knee and hip joint loading during sidecutting in handball - implications for prevention and rehabilitation after ACL-injuries, Idrætsmedicinsk Årskongres, (2008); Pollard C.D., Sigward S.M., Ota S., Et al., The influence of in-season injury prevention training on lower-extremity kinematics during landing in female soccer players, Clin J Sport Med, 16, pp. 223-227, (2006); Boden B.P., Dean G.S., Feagin J.A.J., Et al., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Hewett T.E., Stroupe A.L., Nance T.A., Et al., Plyometric training in female athletes. Decreased impact forces and increased hamstring torques, Am J Sports Med, 24, pp. 765-773, (1996)","M. K. Zebis; National Research Centre for the Working Environment, Copenhagen, Denmark; email: mettezebis@hotmail.com","","","1050642X","","CJSME","18614884","English","Clin. J. Sport Med.","Article","Final","","Scopus","2-s2.0-49049107409" "Nigg B.M.; Yeadon M.R.","Nigg, Benno M. (7004977485); Yeadon, M.R. (7006032024)","7004977485; 7006032024","Biomechanical aspects of playing surfaces","1987","Journal of Sports Sciences","5","2","","117","145","28","151","10.1080/02640418708729771","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0023350787&doi=10.1080%2f02640418708729771&partnerID=40&md5=09d7935361ded6ecde82e82f0ae016b1","Biomechanics Laboratory, University of Calgary, Calgary, AB, T2N1N4, Canada","Nigg B.M., Biomechanics Laboratory, University of Calgary, Calgary, AB, T2N1N4, Canada; Yeadon M.R., Biomechanics Laboratory, University of Calgary, Calgary, AB, T2N1N4, Canada","The purpose of this paper is to discuss some biomechanical aspects of playing surfaces with special focus on (a) surface induced injuries, (b) methodologies used to assess surfaces and (c) findings from various sports. The paper concentrates primarily on questions related to load on the athlete’s body. Data from epidemiological studies suggest strongly that the surface is an important factor in the aetiology of injuries. Injury frequencies are reported to be significantly different for different surfaces in several sports. The methodologies used to assess surfaces with respect to load or performance include material tests and tests using experimental subjects. There is only little correlation between the results of these two approaches. Material tests used in many standardized test procedures are not validated which suggests that one should exercise restraint in the interpretation of these results. Point elastic surfaces are widely studied while area elastic surfaces have received little attention to date. Questions of energy losses on sport surfaces have rarely been studied scientifically. © Taylor & Francis Group, LLC.","Energy loss; Load; Material tests; Performance; Playing surfaces; Subject tests","Athletic Injuries; Biomechanics; Energy Transfer; Environment Design; Football; Human; Locomotion; Materials Testing; Running; Soccer; Sports; Surface Properties; Tennis; biomechanics; energy transfer; environmental planning; football; human; locomotion; materials testing; review; running; sport; sport injury; surface property; tennis","Andersson R., Hauri M., Bewegungsmuster in Abhaengigkeit von Schuh und Boden (Movement pattern depending on shoe and surface), Master’s Thesis, (1981); Andreasson G., Textile and Related Materials to Prevent Athletic Injuries, (1985); Andreasson G., Olofsson B., Surface and shoe deformation in sport activities and injuries, Biomechanical Aspects of Sport Shoes and Playing Surfaces, pp. 55-61, (1983); Biener K., Caluori P., Tennissportunfaelle. Mediziniche Klinik, 72, pp. 754-757, (1977); Bocchi L., Fontanesi G., Orso C.A., Camurri G.B., La patologia del piede nel tennis in rapporto al terreno di gioco, International Journal of Sport Traumatology, 6, pp. 325-332, (1984); Bodmer H., Herzog M., Materialeigenschaften Von Sportboeden Und Schuhen, (1980); Bonstingl R.W., Morehouse C.A., Nichol B., Torques developed by different types of shoes on various playing surfaces, Medicine and Science in Sports, 7, pp. 127-131, (1975); Bosco C., Locatelli E., Matteucci E., Eine einfache Methode zum Vergleich von Lauf-und Sprungleistungen auf verschiedenen Belaegen, Leistungssport, 6, pp. 23-28, (1984); Bowers K.D., Martin R.B., Impact absorption, new and old AstroTurf at West Virginia University, Medicine and Science in Sports, 6, pp. 217-221, (1974); Cavanagh P.R., Lafortune M.A., Ground reaction forces in distance running, Journal of Biomechanics, 13, pp. 397-406, (1980); Clarke T.E., Frederick E.C., Cooper L.B., The effects of shoe cushioning upon selected force and temporal parameters in running, Abstract Presented at the 1982 Annual Meeting of the American College of Sports Medicine, (1982); Clement D.B., Taunton J.E., Wiley J.P., Smart G.W., McNicol K.L., Investigation of metabolic efficiency in runners with and without corrective orthotic devices, International Journal of Sport Medicine, 2, pp. 14-15, (1982); Denoth J., Der Einfluss des Sportplatzbelages auf den menschlichen Bewegungsapparat, Medita, 9, pp. 164-167, (1977); Denoth J., Der Einfluss der Bewegungsgeschwindigkeit (The influence of the speed of movement), Biomechanische Aspekte Zu Sportplatzbelaegen (Biomechanical Aspects of Playing Surfaces), pp. 64-77, (1978); Denoth J., Der Einfluss der Schuhe (The influence of shoes), Biomechanische Aspekte Zu Sportplatzbelaegen, pp. 46-54, (1978); Denoth J., Bemerkungen zur Anwendung (Messmethoden), Biomechanische Aspekte Zu Sportplatzbelaege, pp. 34-45, (1978); Denoth J., A method to measure mechanical properties of soles and playing surfaces, Biomechanical Aspects of Sport Shoes and Playing Surfaces, pp. 43-50, (1983); Denoth J., Kaelin X., Stacoff A., Schockabsorption beim Jogging, Materialtest contra Versuchspersonentests (Cushioning during running, material tests against subject tests), Sportmedizin, 7, pp. 196-202, (1985); Denoth J., Load on the locomotor system and modelling, Biomechanics of Running Shoes, pp. 63-116, (1986); Ekstrand J., Soccer Injuries and Their Prevention, (1982); Ferretti A., Epidemiology of jumper’s knee, Sports Medicine, 3, pp. 289-295, (1986); Ferretti A., Pudden G., Mariani P., Neri M., Jumper’s knee: An epidemiological study of volleyball players, Physician and Sportsmedicine, 12, pp. 97-106, (1984); Francis L.L., Francis P.R., Welshons-Smith K., Aerobic dance injuries: A survey of instructors, Physician and Sportsmedicine, 2, pp. 105-111, (1985); Frederick E.C., Measuring the effects of shoes and surfaces on the economy of locomotion, Biomechanical Aspects of Sport Shoes and Playing Surfaces, pp. 93-106, (1983); Frederick E.C., Hagy J.L., Mann R.A., The prediction of vertical impact force during running, Journal of Biomechanics, 14, (1981); Greene P.R., McMahon T.A., Reflex stiffness of man’s anti-gravity muscles during kneebends while carrying extra weights, Sport Shoes and Playing Surfaces, pp. 119-137, (1984); Haberl R., Prokop L., Der Einfluss physikalischer Materialgroessen auf die Stuetzphase beim Lauf (The influence of physical material properties on the stance phase in running), Oesterreichishes Journal Fiter Sportsmedizin, 3, pp. 3-17, (1973); Herzog W., Der Einfluss der Laufgeschwindigkeit und des Spörtplatzbelages auf die Belastung des menschlichen Bewegungsapparates (The influence of running velocity and playing surface on the load on the human locomotor system), Master’s Thesis, (1978); Hess H., Hort W., Erhoehte Verletzungsgefahr beim Leichtathletiktraining auf Kunststoffboe-den (Increased changes of injuries during practicing track and field on artificial surfaces), Sportarzt Und Sportmedizin, 12, pp. 282-285, (1973); Hort W., Ursachen, Klinik, Therapie und Prophylaxe der Schaeden auf LeichtathletikKunststoffbahnen, Leistungssport, 1, pp. 48-52, (1976); James S., Bates B., Osternig L., Injuries in runners, American Journal of Sports Medicine, 6, pp. 40-50, (1978); Kaelin X., Denoth J., Stacoff A., Stuessi E., Cushioning during running—material tests versus subject tests, Biomechanics: Principles and Applications, 2, pp. 651-656, (1985); Kolitzus H.J., Sporthallenboeden. 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Sports Sci.","Article","Final","","Scopus","2-s2.0-0023350787" "Shan G.; Westerhoff P.","Shan, Gongbing (7005942347); Westerhoff, Peter (57526923800)","7005942347; 57526923800","Soccer: Full‐body kinematic characteristics of the maximal instep Soccer kick by male soccer players and parameters related to kick quality","2005","Sports Biomechanics","4","1","","59","72","13","128","10.1080/14763140508522852","https://www.scopus.com/inward/record.uri?eid=2-s2.0-19644365138&doi=10.1080%2f14763140508522852&partnerID=40&md5=e3920b63efb4821aaba79a4bc789f168","Department of Kinesiology, The University of Lethbridge, Lethbridge, AB, Canada; Department of Sports and Engineering, Otto‐von‐Guericke‐University Magdeburg, Magdeburg, Germany","Shan G., Department of Kinesiology, The University of Lethbridge, Lethbridge, AB, Canada; Westerhoff P., Department of Sports and Engineering, Otto‐von‐Guericke‐University Magdeburg, Magdeburg, Germany","Many studies try to understand fundamental soccer skills, most focusing on kicking. However, a full picture of an efficient kick remains incomplete owing to constraints of test designs and difficulties that arise in synchronizing and analyzing information generated by multiple assessment techniques. Previous scientific studies may be generally categorized as: two‐dimensional kinematic analysis using high‐speed cameras, muscle activity studies using electromyog‐raphy, three‐dimensional analysis of the kicking‐leg using a partial‐body model, and kinetic studies using force measurements and modelling. No existing inquiries have used full‐body three‐dimensional motion capture and modelling to examine kicking. The current study remedies this deficiency and defines a full‐body model capable of revealing more detailed characteristics of kicking. Additionally, it reveals effects of long‐term training by comparing novices with skilled athletes and explores new parameters that have potential to aid quantitative evaluations of skill. Results show effective upper‐body movement to be a key factor in creating better initial conditions for a more explosive muscle contraction during kicking. It permits a more powerful quasi whip‐like movement of the kicking leg. Finally, the timely change of distance between the kick‐side hip and the non‐kick‐side shoulder provides a quantitative means of measuring kick quality. © 2005 Taylor & Francis Group, LLC. All rights reserved.","Full-body modelling; Multi-joint coordination; Pre-Lengthening; Quasi whip-like; Tension arc; Three-Dimensional motion capture","Adaptation, Physiological; Adult; Biomechanics; Humans; Imaging, Three-Dimensional; Leg; Male; Models, Biological; Motor Activity; Movement; Posture; Soccer; Task Performance and Analysis; adaptation; adult; article; biological model; biomechanics; body posture; clinical trial; human; leg; male; methodology; motor activity; movement (physiology); physiology; sport; task performance; three dimensional imaging","Asai T., Akatsuka T., Kaga M., Impact process of kicking in football, Proceedings of the Xvth Congress of the International Society of Biomechanics, pp. 74-75, (1995); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Medicine and Science in Sports and Exercise, 35, pp. 119-127, (2003); Davids K., Lees A., Burwitz L., Understanding and measuring coordination and control in kicking skills in soccer: Implications for talent identification and skill acquisition, Journal of Sports Sciences, 18, pp. 703-714, (2000); Dorge H.C., Ersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the nonpreferred leg, Journal of Sports Sciences, 20, pp. 293-299, (2002); Dorge H.C., Ersen T.B., Sorensen H., Simonsen E.B., Aagaard H., Dyhre-Poulsen P., Klausen K., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scandinavian Journal of Medicine & Science in Sports, 9, pp. 195-200, (1999); Ekstrand J., Injuries, Football (Soccer), pp. 175-194, (1994); Gowitzke B.A., Milner M., Understanding the Scientific Bases of Human Movement, (1980); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (1998); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 441-448, (1988); Luhtanen P., Biomechanical aspects, Football (Soccer), pp. 59-77, (1994); Nordin M., Frankel V., Basic Biomechanics of the Musculoskeletal System, (2001); Opavsky P., An investigation of linear and angular kinematics of the leg during two types of soccer kick, Science and Football, pp. 460-467, (1988); Rodano R., Tavana R., Three dimensional analysis of the instep kick in professional soccer players, Science and Football II, pp. 357-361, (1993); Taube F.W., Electromyographic Analysis of Selected Muscles Performing the Soccer Instep Kick Following Levels of Physiological Stress, (1972); Zernicke R., Roberts E.M., Lower extremity forces and torques during systematic variation of non-weight bearing motion, Medicine and Science in Sports, 10, pp. 21-26, (1978); Zhang Y.Q., Guo J.R., Chen L.G., Discussion on skill of push kicking with full instep by simultaneity of myodynamic, myographic and video measurements in soccer players, Journal of Tianjin Institute of Physical Education, 14, pp. 50-53, (1999)","","","","14763141","","","15807377","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-19644365138" "Nunome H.; Lake M.; Georgakis A.; Stergioulas L.K.","Nunome, Hiroyuki (6507093692); Lake, Mark (57213492724); Georgakis, Apostolos (6603483917); Stergioulas, Lampros K. (6602570038)","6507093692; 57213492724; 6603483917; 6602570038","Impact phase kinematics of instep kicking in soccer","2006","Journal of Sports Sciences","24","1","","11","22","11","97","10.1080/02640410400021450","https://www.scopus.com/inward/record.uri?eid=2-s2.0-31344472129&doi=10.1080%2f02640410400021450&partnerID=40&md5=c1f74f9a538344f2a35217ee72fd45bc","Research Centre of Health, Physical Fitness and Sports, Nagoya University, Chikusa, Nagoya 464-8601, Furo-cho, Japan; Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom; Division of Engineering, King's College, London, United Kingdom; Department of Information Systems and Computing, Brunel University, Uxbridge, United Kingdom","Nunome H., Research Centre of Health, Physical Fitness and Sports, Nagoya University, Chikusa, Nagoya 464-8601, Furo-cho, Japan; Lake M., Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom; Georgakis A., Division of Engineering, King's College, London, United Kingdom; Stergioulas L.K., Department of Information Systems and Computing, Brunel University, Uxbridge, United Kingdom","The purpose of this study was to capture the lower limb kinematics before during and after ball impact of soccer kicking by examining the influence of both sampling rate and smoothing procedures. Nine male soccer players performed maximal instep kicks and the three-dimensional leg movements were captured at 1000 Hz. Angular and linear velocities and accelerations were determined using four different processing approaches: processed using a modified version of a time-frequency filtering algorithm (WGN), smoothed by a second-order low-pass Butterworth filter at 200 Hz cut-off (BWF), re-sampled at 250 Hz without smoothing (RSR) and re-sampled at 250 Hz but filtered by the same Butterworth filter at 10 Hz cut-off (RSF). The WGN approach appeared to establish representative kinematics, whereas the other procedures failed to remove noisy oscillation from the baseline of signal (BWF), lost the peaks of rapid changes (RSR) or produced totally distorted movement patterns (RSF). The results indicate that the procedures used by some previous studies may have been insufficient to adequately capture the lower limb motion near ball impact. We propose a new time-frequency filtering technique as a better way to smooth data whose frequency content varies dramatically. © 2006 Taylor & Francis.","Ball impact; Shank and foot kinematics; Soccer kick; Time frequency filtering","Adult; Biomechanics; Great Britain; Humans; Lower Extremity; Male; Range of Motion, Articular; Soccer; Sports Equipment; Task Performance and Analysis; acceleration; adult; algorithm; article; athlete; human; human experiment; kinematics; leg movement; male; normal human; oscillation; sport; statistical analysis; velocity","Andersen T.B., Dorge H.C., Thomsen F.I., Collisions in soccer kicking, Sports Engineering, 2, pp. 121-125, (1999); Asai T., Akatsuka T., Kaga M., Impact process of kicking in football, Proceedings of the XVth Congress of the International Society of Biomechanics, pp. 74-75, (1995); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Barfield W.R., Effects of selected kinamatic and kinetic variables on instep kicking with dominant and nondominant limbs, Journal of Human Movement Studies, 29, pp. 251-272, (1995); Ben-Sira D., A Comparison of the Mechanical Characteristics of the Instep Kick Between Skilled Soccer Players and Novices, (1980); Biedert R., Anterior ankle pain in football: Aetiology and indications for arthroscopic treatment, Science and Football II, pp. 396-401, (1993); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, pp. 293-299, (2002); Georgakis A., Stergioulas L.K., Giakas G., Winger filtering with smooth roll-off boundary for differentiation of noisey non-stationary signals, Signal Processing, 82, pp. 1411-1415, (2002); Georgakis A., Stergioulas L.K., Giakas G., An automatic algorithm for filtering kinematic signals with impact in the Winger representation, Medical and Biological Engineering and Computing, 40, pp. 625-633, (2002); Giakas G., Stergioulas L.K., Vourdas A., Time-frequency analysis and filtering of kinematic signals with impacts using the Wigner function: Accurate estimation of the second derivative, Journal of Biomechanics, 33, pp. 567-574, (2000); Hennig E., Measuring methods for the evaluation of soccer shoe properties, Proceedings of the Soccer Science and Technology Congress, pp. 299-310, (1998); Isokawa M., Lees A., A biomechanical analysis of the instep kick motion in soccer, Science and Football, pp. 449-455, (1988); Johannes L.T., Slim E., Van Soest A.J., Van Dijk C.N., The relationship of the kicking action in soccer and anterior ankle impingement syndrome: A biomechanical analysis, American Journal of Sports Medicine, 30, pp. 45-50, (2002); Knudson D., Bahamonde R., Effect of endpoint conditions on position and velocity near impact in tennis, Journal of Sports Sciences, 19, pp. 839-844, (2001); Lafortune M.A., Lambert C., Lake M., Skin marker displacement at the knee joint Proceedings of NACOB II, The Second North American Congress on Biomechanics, pp. 101-102, (1992); Lees A., Biomechanics applied to soccer skills, Science and Football (Soccer), pp. 123-134, (1996); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (1998); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports Exercise, 30, pp. 917-927, (1998); Massada J.L., Ankle overuse injuries in soccer players: Morphological adaptation of the talus in the anterior impingement, Journal of Sports Medicine and Physical Fitness, 31, pp. 447-451, (1991); McMurray T.P., Footballer's ankle, Journal of Bone and Joint Surgery, 32 B, pp. 68-69, (1950); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports Exercise, 34, pp. 2028-2036, (2002); O'Neill T., Soccer injuries, Sports Fitness and Sports Injuries, pp. 127-132, (1981); Plagenhof S., Patterns of Human Motion, pp. 98-117, (1971); Rodano R., Tavana R., Three dimensional analysis of the instep kick in professional soccer players, Science and Football II, pp. 357-361, (1993); Smith G., Padding point extrapolation techniques for the Butterworth digital filter, Journal of Biomechanics, 22, pp. 967-971, (1989); Teixeira L.A., Kinematics of kicking as a function of different sources of constraint on accuracy, Perceptual and Motor Skills, 88, pp. 785-789, (1999); Van den Bogert A.J., Analysis and simulation of mechanical loads on human musculoskeletal system: A methodological overview, Exercise and Sport Sciences Reviews, 22, pp. 23-51, (1994); Winter D.A., Biomechanics and Motor Control of Human Movement, (1990)","H. Nunome; Research Centre of Health, Physical Fitness and Sports, Nagoya University, Chikusa, Nagoya 464-8601, Furo-cho, Japan; email: nunome@htc.nagoya-u.ac.jp","","","1466447X","","JSSCE","16368610","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-31344472129" "Imwalle L.E.; Myer G.D.; Ford K.R.; Hewett T.E.","Imwalle, Lauren E. (35740498600); Myer, Gregory D. (6701852696); Ford, Kevin R. (7102539333); Hewett, Timothy E. (7005201943)","35740498600; 6701852696; 7102539333; 7005201943","Relationship between hip and knee kinematics in athletic women during cutting maneuvers: Apossible link to noncontact anterior cruciate ligament injury and prevention","2009","Journal of Strength and Conditioning Research","23","8","","2223","2230","7","89","10.1519/JSC.0b013e3181bc1a02","https://www.scopus.com/inward/record.uri?eid=2-s2.0-70449363921&doi=10.1519%2fJSC.0b013e3181bc1a02&partnerID=40&md5=abb1b31d04eff63aaf03d881739b76b3","Cincinnati Children's Hospital Research Foundation Sports, Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States; University of Cincinnati, College of Medicine, Cincinnati, OH, United States; Graduate Program in Athletic Training, Rocky Mountain University of Health Professions, Provo, UT, United States","Imwalle L.E., Cincinnati Children's Hospital Research Foundation Sports, Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, University of Cincinnati, College of Medicine, Cincinnati, OH, United States; Myer G.D., Cincinnati Children's Hospital Research Foundation Sports, Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Graduate Program in Athletic Training, Rocky Mountain University of Health Professions, Provo, UT, United States; Ford K.R., Cincinnati Children's Hospital Research Foundation Sports, Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, University of Cincinnati, College of Medicine, Cincinnati, OH, United States; Hewett T.E., Cincinnati Children's Hospital Research Foundation Sports, Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, University of Cincinnati, College of Medicine, Cincinnati, OH, United States","The purposes of this study were to compare lower-extremity kinematics during a 45° and 90° cutting maneuver and to examine the relationships between lower-extremity rotations during these maneuvers. The hypotheses tested were that greater internal hip and knee rotation angles would be observed during the cutting maneuver at a 90° angle (90° cut) compared with the maneuver performed at a45° angle (45° cut) and that the increased internal hip and knee rotation would be related to increased knee abduction measures. Nineteen athletes from women's soccer teams (17.6 ± 2.1 yr, 165.6 ± 8.2 cm, 60.2 ± 5.6 kg) were instructed to jump across a line and cut at the appropriate angle (either 45° or 90° side-step cut) and in the appropriate direction. Lower-extremity kinematic measures were taken at peak force during the stance phase. Hip internal rotation and knee internal rotation (p = 0.008) were increased during the 90° cut compared with the 45° cut. Mean hip flexion (p < 0.001) was also greater in the 90° cut. The only significant predictor of knee abduction during both tasks was hip adduction (R = 0.49). The findings indicate that the mechanisms underlying increased knee abduction measures in athletic women during cutting tasks were primarily coronal plane motions at the hip. Trunk and hip focused strength neuromuscular training may improve the ability of athletic women to increase control of lower-extremity alignment. Therefore, these women may decrease dangerous knee loads that result from increased hip adduction during dynamic tasks, thus decreasing anterior cruciate ligament injury risk. ©2009 National Strength and Conditioning Association.","Agility; Female sports; High risk biomechanics; Knee injury prevention; Reaction cutting","Adolescent; Analysis of Variance; Anterior Cruciate Ligament; Athletes; Athletic Injuries; Biomechanics; Female; Hip Joint; Humans; Knee Injuries; Knee Joint; Linear Models; Movement; Rotation; Soccer; Young Adult; adolescent; adult; analysis of variance; anterior cruciate ligament; article; athlete; biomechanics; comparative study; female; hip; human; injury; knee; knee injury; movement (physiology); pathophysiology; physiology; rotation; sport; sport injury; statistical model","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A 13-year review, Am J Sports Med, 33, pp. 524-530, (2005); Besier T.F., Lloyd D.G., Ackland T.R., Cochrane J.L., Anticipatory effects on knee joint loading during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1176-1181, (2001); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1168-1175, (2001); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Brent J.L., Myer G.D., Ford K.R., Hewett T.E., The effect of gender and age on isokinetic hip abduction, Med Sci Sports Exerc, 38, (2006); Chaudhari A.M., Andriacchi T.P., The mechanical consequences of dynamic frontal limb alignment for non-contact ACL injury, J Biomech, 39, pp. 330-338, (2006); Chimera N.J., Swanik K.A., Swanik C.B., Straub S.J., Effects of plyometric training on muscle-activation strategies and performance in female athletes, JAthl Train, 39, pp. 24-31, (2004); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, pp. 1745-1750, (2003); Ford K.R., Myer G.D., Hewett T.E., Reliability of landing using 3D motion analysis techniques: Implications for longitudinal analyses, Med Sci Sports Exerc, 39, pp. 2021-2028, (2007); Ford K.R., Myer G.D., Smith R.L., Vianello R.M., Seiwert S.L., Hewett T.E., A comparison of dynamic coronal plane excursion between matched male and female athletes when performing single leg landings, Clin Biomech, 21, pp. 33-40, (2006); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Med Sci Sports, 37, pp. 124-129, (2005); Freedman K.B., Glasgow M.T., Glasgow S.G., Bernstein J., Anterior cruciate ligament injury and reconstruction among university students, Clin Orthop Related Res, 356, pp. 208-212, (1998); Hewett T.E., Ford K.R., Myer G.D., Wanstrath K., Scheper M., Gender differences in hip adduction motion and torque during a single leg agility maneuver, JOrthopRes, 24, pp. 416-421, (2006); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J Bone Joint Surg Am, 86 A, pp. 1601-1608, (2004); Hewett T.E., Myer G.D., Ford K.R., Jr H.Rs, Colosimo A.J., McLean S.G., Van Den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes. Decreased impact forces and increased hamstring torques, Am J Sports Med, 24, pp. 765-773, (1996); Kernozek T.W., Torry M.R., Cowley H., Tanner S., Gender differences in frontal and sagittal plane biomechanics during drop landings, Med Sci Sports Exerc, 37, pp. 1003-1013, (2005); Krosshaug T., Nakamae A., Boden B.P., Engebretsen L., Smith G., Slauterbeck J.R., Hewett T.E., Bahr R., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, Am J Sports Med, 21, pp. 41-42, (2006); Landry S.C., McKean K.A., Hubley-Kozey C.L., Stanish W.D., Neuromuscular D.Kj., And lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated side-cut maneuver, Am J Sports Med, 35, (1888); Leetun D.T., Ireland M.L., Willson J.D., Ballantyne B.T., Davis I.M., Core stability measures as risk factors for lower extremity injury in athletes, Med Sci Sports Exerc, 36, pp. 926-934, (2004); Lohmander L.S., Englund P.M., Dahl L.L., Roos E.M., The long-term consequence of anterior cruciate ligament and meniscus injuries: Osteoarthritis, Am J Sports Med, 35, pp. 1756-1769, (2007); Lu T.W., O'Connor J.J., Bone position estimation from skin marker co-ordinates using global optimisation with joint constraints, J Biomech, 32, pp. 129-134, (1999); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, pp. 930-935, (1995); McLean S.G., Huang X., Su A., Van Den Bogert A.J., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clin Biomech, 19, pp. 828-838, (2004); McLean S.G., Lipfert S.W., Van Den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, pp. 1008-1016, (2004); McLean S.G., Su A., Development Bogert V.Den, And validation of a 3-D model to predict knee joint loading during dynamic movement, JBiol Chem, 125, pp. 864-874, (2003); Myer G.D., Brent J.L., Ford K.R., Hewett T.E., A pilot study to determine the effect oftrunk and hip focused neuromuscular training on hip and knee isokinetic strength, Br J Sports Med, 42, pp. 614-619, (2008); Myer G.D., Chu D.A., Brent J.L., Trunk H.Te., And hip control neuromuscular training for the prevention of knee joint injury, Clin Sports Med, 27, pp. 425-448, (2008); Myer G.D., Ford K.R., Brent J.L., Hewett T.E., Athletes ''Low-Risk'' Versus In''High-Risk'' Factors Risk Injury Acl on Effects Training Neuromuscular Differential, BMC Musculoskelet Disord, 8, pp. 1-7, (2007); Myer G.D., Ford K.R., McLean S.G., Hewett T.E., The effects ofplyometric versus dynamic stabilization and balance training on lower extremitybiomechanics, Am JSports Med, 34, pp. 490-498, (2006); Myer G.D., Ford K.R., Brent J.L., Hewett T.E., The effects of plyometric versus dynamic balance training on power, balance, and landing force in female athletes, J Strength Cond Res, 20, pp. 345-353, (2006); Myer G.D., Ford K.R., Palumbo J.P., Hewett T.E., Neuromuscular training improves performance and lower-extremity biomechanics in female athletes, J Strength Cond Res, 19, pp. 51-60, (2005); Myklebust G., Bahr R., Return to play guidelines after anterior cruciate ligament surgery, Br JSports Med, 39, pp. 127-131, (2005); Nyland J., Kuzemchek S., Parks M., Caborn D.N., Femoral anteversion influences vastus medialis and gluteus medius EMG amplitude: Composite hip abductor EMG amplitude ratios during isometric combined hip abduction-external rotation, J Electromyogr Kinesiol, 14, pp. 255-261, (2004); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med, 32, pp. 1002-1012, (2004); Padua D.A., Marshall S.W., Beutler A.I., Demaio M., Boden B.P., Yu B., Garrett W.E., Predictors of knee valgus angle during a jumplanding task, Med Sci Sports Exerc, 37, (2005); Pollard C.D., Davis I.M., Hamill J., Influence of gender on hip and knee mechanics during a randomly cued cutting maneuver, Clin Biomech, 19, pp. 1022-1031, (2004); Powers C.M., The influence of altered lower-extremity kinematics on patellofemoral joint dysfunction: A theoretical perspective, J Orthop Sports Phys Ther, 33, pp. 639-646, (2003); Woltring H.J., Huiskes R., De Lange A., Veldpaus F.E., Finite centroid and helical axis estimation from noisy landmark measurements in the study of human joint kinematics, J Biomech, 18, pp. 379-389, (1985)","G. D. Myer; Cincinnati Children's Hospital Research Foundation Sports, Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States; email: greg.myer@cchmc.org","","","10648011","","","19826304","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-70449363921" "Travassos B.; Araújo D.; Duarte R.; McGarry T.","Travassos, B. (57205163916); Araújo, D. (9334135800); Duarte, R. (36503747400); McGarry, T. (7006249413)","57205163916; 9334135800; 36503747400; 7006249413","Spatiotemporal coordination behaviors in futsal (indoor football) are guided by informational game constraints","2012","Human Movement Science","31","4","","932","945","13","89","10.1016/j.humov.2011.10.004","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870240510&doi=10.1016%2fj.humov.2011.10.004&partnerID=40&md5=cab4a59196508290650244588e7e7ea5","Faculty of Human Kinetics, Technical University of Lisbon, Portugal; Department of Sport Sciences, University of Beira Interior, Portugal; Faculty of Kinesiology, University of New Brunswick, Canada","Travassos B., Faculty of Human Kinetics, Technical University of Lisbon, Portugal, Department of Sport Sciences, University of Beira Interior, Portugal; Araújo D., Faculty of Human Kinetics, Technical University of Lisbon, Portugal; Duarte R., Faculty of Human Kinetics, Technical University of Lisbon, Portugal; McGarry T., Faculty of Kinesiology, University of New Brunswick, Canada","This report investigated the behavioral dynamics of teams in futsal game practice when the goalkeeper of the attacking team is substituted for an extra outfield player. To this end, the lateral and longitudinal displacements of the ball and both teams, as well as their kinematics expressed in angles and radial distances from the goal center, were obtained and subjected to relative phase analysis. The results demonstrated (a) stronger phase relations with the ball for the defending team than the attacking team for both coordinate systems, (b) phase relations between each team and ball, and, to a lesser extent, between teams themselves, produced greater stabilities in the lateral (side-to-side) direction than the longitudinal (forward-backward) direction, and (c) phase attractions were most pronounced for the defending team and ball when using angles as a measure of association, indicating ball position and goal location as key informational constraints for futsal game behavior. These findings advance understanding of self-organizing sports game dynamics with implications for sports practice. © 2012 Elsevier B.V.","Coordination dynamics; Futsal; Game constraints; Self-organization; Team sports","Biomechanics; Competitive Behavior; Goals; Humans; Male; Orientation; Portugal; Practice (Psychology); Soccer; Spatial Behavior; Young Adult; article; coordination; defensive behavior; football; game; human; kinematics; male; spatiotemporal coordination; visuomotor coordination","Araujo D., Davids K., Bennett S., Button C., Chapman G., Emergence of sport skills under constraints, Skill acquisition in sport: Research, theory and practice, pp. 409-433, (2004); Araujo D., Davids K., Hristovski R., The ecological dynamics of decision making in sport, Psychology of Sport and Exercise, 7, pp. 653-676, (2006); Beek P.J., Verschoor F., Kelso S., Requirements for the emergence of a dynamical social psychology, Psychological Inquiry, 100, (1997); Bourbousson J., Seve C., McGarry T., Space-time coordination patterns in basketball: Part 1 - Intra- and inter-couplings amongst player dyads, Journal of Sport Sciences, 28, pp. 339-347, (2010); Bourbousson J., Seve C., McGarry T., Space-time coordination patterns in basketball: Part 2 - Investigating the interaction between the two teams, Journal of Sport Sciences, 28, pp. 349-358, (2010); Castagna C., D'Ottavio S., Granda-Vera J., Barbero-Alvarez J.C., Match demands of professional futsal: A case study, Journal of Science and Medicine in Sport, 12, pp. 490-494, (2009); Davids K., Araujo D., Shuttleworth R., Applications of dynamical systems theory to football, Science and football V: The proceedings of the fifth world congress on sports science and football, pp. 537-550, (2005); Davids K., Glazier P., Araujo D., Bartlett R., Movement systems as dynamical systems: The functional role of variability and its implications for sports medicine, Sports Medicine, 33, (2003); Davids K., Kingsbury D., Bennett S., Handford C., Information-movement coupling: Implications for the organization of research and practice during acquisition of self-paced extrinsic timing skills, Journal of Sports Sciences, 19, pp. 117-127, (2001); Duarte R., Araujo D., Fernandes O., Fonseca C., Correia V., Gazimba V., Et al., Capturing complex human behaviors in representative sports contexts with a single camera, Medicina, 46, pp. 408-414, (2010); Fernandes O., Folgado H., Duarte R., Malta P., Validation of the tool for applied and contextual time-series observation, International Journal of Sport Psychology, 41, SUPPL. 4, pp. 63-64, (2010); Frencken W., Lemmink K., Team kinematics of small-sided soccer games: A systematic approach, Proceedings of the sixth world congress on science and football, pp. 161-166, (2008); Goto R., Mascie-Taylor C.G.N., Precision of measurement as a component of human variation, Journal of Physiological Anthropology, 26, pp. 253-256, (2007); Kelso J.A.S., Engstrom D.A., The complementary nature, (2006); Kwon Y.H., Measurement for deriving kinematic parameters: Numerical methods, Handbook of biomechanics and human movement science, pp. 156-180, (2008); Lames M., Erdmann J., Walter F., Oscillations in football - Order and disorder in spatial interactions between the two teams, International Journal of Sport Psychology, 41, (2010); Marsh K.L., Richardson M.J., Baron R.M., Schmidt R.C., Contrasting approaches to perceiving and acting with others, Ecological Psychology, 18, pp. 1-38, (2006); McGarry T., Soccer as a dynamical system: Some theoretical considerations, Science and Football V: The proceedings of the fifth world congress on sports science and football, (2005); McGarry T., Applied and theoretical perspectives of performance analysis in sport: Scientific issues and challenges, International Journal of Performance Analysis in Sport, 9, pp. 128-140, (2009); McGarry T., Anderson D.I., Wallace S.A., Hughes M.D., Franks I.M., Sport competition as a dynamical self-organizing system, Journal of Sports Sciences, 20, pp. 771-781, (2002); McGarry T., Khan M.A., Franks I.M., On the presence and absence of behavioural traits in sport: An example from championship squash match-play, Journal of Sports Sciences, 17, pp. 297-311, (1999); Palut Y., Zanone P.G., A dynamical analysis of tennis: Concepts and data, Journal of Sports Sciences, 23, pp. 1021-1032, (2005); Passos P., Araujo D., Davids K., Gouveia L., Serpa S., Milho J., Et al., Interpersonal pattern dynamics and adaptive behavior in multiagent neurobiological systems: Conceptual model and data, Journal of Motor Behavior, 41, pp. 445-459, (2009); Reed D., Hughes M., An exploration of team sport as a dynamical system, International Journal of Performance Analysis in Sport, 6, pp. 114-125, (2006); Rosenblum M., Pikovsky A., Kurths J., Schafer C., Tass P.A., Phase synchronization: from theory to data analysis, Handbook of biological physics, 4, pp. 279-321, (2001); Travassos B., Araujo D., Vilar L., McGarry T., Interpersonal coordination and ball dynamics in futsal (indoor football), Human Movement Science, 30, pp. 1245-1259, (2011); Winter D., Biomechanics and motor control of human movement, (2005)","B. Travassos; Sport Sciences Department, University of Beira Interior, 6201-001 Covilhã, Convento de Sto. António, Portugal; email: bruno.travassos@ubi.pt","","","18727646","","HMSCD","22672740","English","Hum. Mov. Sci.","Article","Final","","Scopus","2-s2.0-84870240510" "Dörge H.C.; Andersen T.B.; SØrensen H.; Simonsen E.B.","Dörge, H.C. (36957167700); Andersen, T. Bull (52763200000); SØrensen, H. (36038149900); Simonsen, E.B. (57214018937)","36957167700; 52763200000; 36038149900; 57214018937","Biomechanical differences in soccer kicking with the preferred and the non-preferred leg","2002","Journal of Sports Sciences","20","4","","293","299","6","175","10.1080/026404102753576062","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036236638&doi=10.1080%2f026404102753576062&partnerID=40&md5=92fe47fc8b08ebb3411a846ffbc7346d","Institute of Sports, University of Aarhus, Aarhus, Denmark; Institute of Medical Anatomy, The Panum Institute, University of Copenhagen, Copenhagen, Denmark","Dörge H.C., Institute of Sports, University of Aarhus, Aarhus, Denmark; Andersen T.B., Institute of Medical Anatomy, The Panum Institute, University of Copenhagen, Copenhagen, Denmark; SØrensen H., Institute of Medical Anatomy, The Panum Institute, University of Copenhagen, Copenhagen, Denmark; Simonsen E.B., Institute of Medical Anatomy, The Panum Institute, University of Copenhagen, Copenhagen, Denmark","The aims of this study were to examine the release speed of the ball in maximal instep kicking with the preferred and the non-preferred leg and to relate ball speed to biomechanical differences observed during the kicking action. Seven skilled soccer players performed maximal speed place kicks with the preferred and the non-preferred leg; their movements were filmed at 400 Hz. The inter-segmental kinematics and kinetics were derived. A coefficient of restitution between the foot and the ball was calculated and rate of force development in the hip flexors and the knee extensors was measured using a Kin-Com dynamometer. Higher ball speeds were achieved with the preferred leg as a result of the higher foot speed and coefficient of restitution at the time of impact compared with the non-preferred leg. These higher foot speeds were caused by a greater amount of work on the shank originating from the angular velocity of the thigh. No differences were found in muscle moments or rate of force development. We conclude that the difference in maximal ball speed between the preferred and the non-preferred leg is caused by a better inter-segmental motion pattern and a transfer of velocity from the foot to the ball when kicking with the preferred leg.","Dynamics; Kicking; Soccer","Biomechanics; Hip Joint; Humans; Knee Joint; Leg; Muscle, Skeletal; Soccer; article; athlete; biomechanics; controlled study; correlation coefficient; dynamometry; extensor muscle; film; flexor muscle; foot; force; hip; human; human experiment; human tissue; kinematics; kinetics; knee; leg movement; muscle force; normal human; sport; thigh; velocity","Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Bull Andersen T., Dorge H.C., Thomsen F.I., Collisions in soccer kicking, Sports Engineering, 2, pp. 121-126, (1999); Dorge H.C., Bull Andersen T., Sorensen H., Simonsen E.B., Aagaard H., Dyhre-Poulsen P., Klausen K., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scandinavian Journal of Medicine and Science in Sports, 9, pp. 195-200, (1999); Dunn E.G., Putnam C.A., The influence of lower leg motion on thigh deceleration in kicking, Biomechanics XI-B, pp. 787-790, (1988); Herring R.M., Chapman A.E., Effects of changes in segmental values and timing of both torque and torque reversal in simulated throws, Journal of Biomechanics, 25, pp. 1173-1184, (1992); Isokawa M., Lees A., A biomechanical analysis of the instep kick motion in soccer, Science and Football, pp. 449-455, (1988); Lees A., Biomechanics applied to soccer skills, Science and Soccer, pp. 123-133, (1996); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (1998); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 449-455, (1988); McLean B.D., Tumilty D., Left-right asymmetry in two types of soccer kick, British Journal of Sports Medicine, 27, pp. 260-262, (1993); Plagenhoef S., The Patterns of Human Motion, (1971); Putnam C.A., Interaction between segments during a kicking motion, Biomechanics VIII-B, pp. 688-694, (1983); Putnam C.A., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Medicine and Science in Sports and Exercise, 23, pp. 130-144, (1991); Putnam C.A., Dunn E.G., Performance variations in rapid swinging motions: Effects on segment interaction and resultant joint moments, Biomechanics X, pp. 661-665, (1987); Starosta W., Symmetry and asymmetry in shooting demonstrated by elite soccer players, Science and Football, pp. 346-355, (1988); Winter D.A., Biomechanics and Motor Control of Human Movement, (1990); Zernicke R., Roberts E.M., Human lower extremity kinetic relationship during systematic variations in resultant limb velocity, Biomechanics V-B, pp. 20-25, (1976)","","","","02640414","","","12003274","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-0036236638" "Yu B.; Queen R.M.; Abbey A.N.; Liu Y.; Moorman C.T.; Garrett W.E.","Yu, Bing (35301366400); Queen, Robin M. (24503786500); Abbey, Alicia N. (25221163600); Liu, Yu (55917986700); Moorman, Claude T. (35516529000); Garrett, William E. (7102162248)","35301366400; 24503786500; 25221163600; 55917986700; 35516529000; 7102162248","Hamstring muscle kinematics and activation during overground sprinting","2008","Journal of Biomechanics","41","15","","3121","3126","5","155","10.1016/j.jbiomech.2008.09.005","https://www.scopus.com/inward/record.uri?eid=2-s2.0-55549128205&doi=10.1016%2fj.jbiomech.2008.09.005&partnerID=40&md5=a165f4385cc199689737e5e1019e7f99","Center for Human Movement Science, Division of Physical Therapy, School of Medicine, Chapel Hill, NC 27599-7135, 3026 Bondurant Hall, United States; Michael W. Krzyzewski Human Performance Laboratory, Division of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, United States; Biomechanics Laboratory, School of Human Movement Science, Shanghai Sports University, Shanghai, China","Yu B., Center for Human Movement Science, Division of Physical Therapy, School of Medicine, Chapel Hill, NC 27599-7135, 3026 Bondurant Hall, United States; Queen R.M., Michael W. Krzyzewski Human Performance Laboratory, Division of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, United States; Abbey A.N., Michael W. Krzyzewski Human Performance Laboratory, Division of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, United States; Liu Y., Biomechanics Laboratory, School of Human Movement Science, Shanghai Sports University, Shanghai, China; Moorman C.T., Michael W. Krzyzewski Human Performance Laboratory, Division of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, United States; Garrett W.E., Michael W. Krzyzewski Human Performance Laboratory, Division of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, United States","Hamstring muscle strain injury is one of the most commonly seen injuries in sports such as track and field, soccer, football, and rugby. The purpose of this study was to advance our understanding of the mechanisms of hamstring muscle strain injuries during over ground sprinting by investigating hamstring muscle-tendon kinematics and muscle activation. Three-dimensional videographic and electromyographic (EMG) data were collected for 20 male runners, soccer or lacrosse players performing overground sprinting at their maximum effort. Hamstring muscle-tendon lengths, elongation velocities, and linear envelop EMG data were analyzed for a running gait cycle of the dominant leg. Hamstring muscles exhibited eccentric contractions during the late stance phase as well as during the late swing phase of overground sprinting. The peak eccentric contraction speeds of the hamstring muscles were significantly greater during the late swing phase than during the late stance phase (p=0.001) while the hamstring muscle-tendon lengths at the peak eccentric contraction speeds were significantly greater during the late stance phase than during the late swing phase (p=0.001). No significant differences existed in the maximum hamstring muscle-tendon lengths between the two eccentric contractions. The potential for hamstring muscle strain injury exists during the late stance phase as well as during the late swing phases of overground sprinting. © 2008 Elsevier Ltd.","Biomechanics; Hamstring muscle; Injury mechanism; Muscle strain injury; Sprinting","Humans; Knee Joint; Male; Muscle Contraction; Muscle, Skeletal; Range of Motion, Articular; Running; Sports; Stress, Mechanical; Young Adult; adult; article; clinical article; controlled study; eccentric muscle contraction; electromyogram; hamstring; human; kinematics; male; muscle contraction; muscle potential; muscle strain; priority journal; running; tendon","Agre J.C., Hamstring injuries: proposed aetiological factors, prevention and treatment, Sports Medicine, 2, pp. 21-33, (1985); Arnason A.S.S., Gudmundsson A., Home I., Engebretsen L., Bahr L., Risk factors for injuries in football, American Journal of Sports Medicine, 32, (2004); Askling C.M., Tengvar M., Saartok T., Thorstensson A., Acute first-time hamstring strains during high-speed running: a longitudinal study including clinical and magnetic resonance imaging findings, American Journal of Sports Medicine, 35, pp. 197-206, (2007); Best T.M., McElhaney J.H., Garrett Jr. W.E., Myers B.S., Axial strain measurements in skeletal muscle at various strain rates, Journal of Biomechanical Engineering, 117, pp. 262-265, (1995); Brooks J.H.M., Fuller C.W., Kemp S.P.T., Reddin D.B., Incidence, risk and prevention of hamstring muscle injuries in professional rugby union, American Journal of Sports Medicine, 34, pp. 1297-1306, (2006); Clanton T.O., Coupe K.J., Hamstring strains in athletes: diagnosis and treatment, Journal of American Academy of Orthopaedic Surgeons, 6, pp. 237-248, (1998); Ekstrand J., Gillquist J., Soccer injuries and their mechanisms: a prospective study, Medicine and Science in Sports and Exercise, 15, pp. 267-270, (1983); Frishberg B.A., An analysis of overground and treadmill sprinting, Medicine and Science in Sports and Exercise, 15, pp. 478-485, (1983); Garrett Jr. W.E., Safran M.R., Seaber A.V., Glisson R.R., Ribbeck B.M., Biomechanical comparison of stimulated and nonstimulated skeletal muscle pulled to failure, American Journal of Sports Medicine, 15, pp. 448-454, (1987); Garrett Jr. W.E., Rich F.R., Nikolaou P.K., Vogler J.B., Computed tomography of hamstring muscle strains, Medicine and Science in Sports and Exercise, 21, pp. 506-514, (1989); Hasselman C.T., Best T.M., Seaber A.V., Garrett Jr. W.E., A threshold and continuum of injury during active stretch of rabbit skeletal muscle, American Journal of Sports Medicine, 23, pp. 65-73, (1995); Hawkins R.D., Hulse M.A., Wilkinson C., Hodson A., Gibson M., The association football medical research programme: an audit of injuries in professional football, British Journal of Sports Medicine, 35, pp. 43-47, (2001); Hay J.G., The Biomechanics of Sports Techniques, (1993); Hinrichs R.N., Adjustments to the segment center of mass proportions of Clauser et al. (1969), Journal of Biomechanics, 23, pp. 949-951, (1990); Kadaba M.P., Ramakrishnan H.K., Wootten M.E., Measurement of lower extremity kinematics during level walking, Journal of Orthopaedic Research, 8, pp. 383-392, (1990); Koulouris G., Connell D.A., Brukner P., Schneider-kolsky M., Magnetic resonance imaging parameters for assessing risk of recurrent hamstring injuries in elite athletes, American Journal of Sports Medicine, 35, pp. 1500-1505, (2007); Lieber R.L., Friden J., Muscle damage is not a function of muscle force but active muscle strain, Journal of Applied Physiology, 74, pp. 520-526, (1993); Lieber R.L., Friden J., Mechanisms of muscle injury gleaned from animal models, American Journal of Physical Medicine and Rehabilitation, 81, (2002); Mann R.V., Sprague P.G., A kinetic analysis of sprinting, Medicine and Science in Sports and Exercise, 13, pp. 325-328, (1981); Orchard J., Seward J., Epidemiologhy of injuries in the Asutralian Football League, seasons 1997-2000, British Journal of Sports Medicine, 36, pp. 39-45, (2002); Pierrynowski M.R., Analytic representation of muscle line of action and geometry, Three-Dimensional Analysis of Human Movement, (1995); Petersen J., Holmich P., Evidence based prevention of hamstring injuries in sports, British Journal of Sports Medicine, 39, pp. 319-323, (2005); Sherry M.A., Best T.M., A comparison of 2 rehabilitation programs in the treatment of acute hamstring strains, Journal of Orthopaedics and Sports Physical Therapy, 34, pp. 116-125, (2004); Simonsen E.B., Thomsen L., Klausen K., Activity of mono- and biarticular leg muscles during sprint running, European Journal of Applied Physiology Occupational Physiology, 54, pp. 524-532, (1985); Stanton P., Purdam C., Hamstring injuries in sprinting: the role of eccentric exercise, Journal of Orthopaedics and Sports Physical Therapy, 10, pp. 343-349, (1989); Thelen D.G., Chumanov E.S., Hoerth D.M., Best T.M., Swanson S.C., Li L., Young M., Heiderscheit B.C., Hamstring muscle kinematics during treatmill sprinting, Medicine and Science in Sports and Exercise, 37, pp. 108-114, (2005); Wood G.A., Biomechanical limitations to sprint running, Medicine and Sport Science, 25, pp. 58-71, (1987); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., The football association medical research programme: an audit of injuries in professional football-analysis of hamstring injuries, British Journal of Sports Medicine, 38, pp. 36-41, (2004)","B. Yu; Center for Human Movement Science, Division of Physical Therapy, School of Medicine, Chapel Hill, NC 27599-7135, 3026 Bondurant Hall, United States; email: byu@med.unc.edu","","","00219290","","JBMCB","18848700","English","J. Biomech.","Article","Final","","Scopus","2-s2.0-55549128205" "Tol J.L.; Slim E.; Van Soest A.J.; Niek Van Dijk C.","Tol, Johannes L. (6701836850); Slim, Erik (6508056494); Van Soest, Arthur J. (7003683137); Niek Van Dijk, C. (59157849600)","6701836850; 6508056494; 7003683137; 59157849600","The relationship of the kicking action in soccer and anterior ankle impingement syndrome: A biomechanical analysis","2002","American Journal of Sports Medicine","30","1","","45","50","5","115","10.1177/03635465020300012101","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036153403&doi=10.1177%2f03635465020300012101&partnerID=40&md5=50af6e7857daa8e9da0579ce7749a56d","Department of Orthopaedic Surgery, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands; Faculty of Human Movement Sciences, Free University, Amsterdam, Netherlands; Department of Orthopaedic Surgery, Academic Medical Center, University of Amsterdam, 1100 DE Amsterdam, POB 22700, Netherlands","Tol J.L., Department of Orthopaedic Surgery, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands, Department of Orthopaedic Surgery, Academic Medical Center, University of Amsterdam, 1100 DE Amsterdam, POB 22700, Netherlands; Slim E., Department of Orthopaedic Surgery, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands; Van Soest A.J., Faculty of Human Movement Sciences, Free University, Amsterdam, Netherlands; Niek Van Dijk C., Department of Orthopaedic Surgery, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands","Two different hypotheses have been advanced to explain the formation of talotibial osteophytes in the anterior ankle impingement syndrome. We investigated how frequently hyperplantar flexion occurs during kicking and whether the site of impact of the ball coincides with the reported location of the osteophytes. We also measured the magnitude of the impact force. We studied 150 kicking actions performed by 15 elite soccer players by using mobile sensors and high-speed video. In 39% of the kicking actions, the plantar flexion angle exceeded the maximum static plantar flexion angle. Ball impact was predominantly made with the anteromedial aspect of the foot and ankle, with impact between the ball and the base of the first metatarsal bone in 89% of the kicking actions and between the ball and the anterior part of the medial malleolus in 76%. Postimpact ball velocity averaged 24.6 m/s, with a corresponding average contact force of 1025 N. Hyperplantar flexion was reached in only the minority of the kicking actions. The data on impact location and impact force support the hypothesis that spur formation in anterior ankle impingement syndrome is related to recurrent ball impact, which can be regarded as repetitive microtrauma to the anteromedial aspect of the ankle.","","adult; aged; ankle injury; anterior ankle impingement syndrome; article; biomechanics; foot injury; human; human experiment; joint function; male; metatarsal bone; normal human; osteophyte; priority journal; sport injury","Biedert R., Anterior ankle pain in sports medicine: Aetiology and indications for arthroscopy, Arch Orthop Trauma Surg, 110, pp. 293-297, (1991); Cutsuries A.M., Saltrick K.R., Wagner J., Et al., Arthroscopic arthroplasty of the ankle joint, Clin Podiatr Med Surg, 11, pp. 449-467, (1994); Ferkel R.D., Scranton Jr. P.E., Arthroscopy of the ankle and foot, J Bone Joint Surg, 75 A, pp. 1233-1242, (1993); Gross P., Marti B., Risk of degenerative ankle joint disease in volleyball players: Study of former elite athletes, Int J Sports Med, 20, pp. 58-63, (1999); Lees A., Kewley P., The demon the soccer boot, Science and Football II, Proceedings of the Second World Congress of Science and Football, pp. 327-334, (1991); Levendusky T.A., Armstrong C.W., Eck J.S., Et al., Impact characteristics of two types of soccer balls, Science and Football. Proceedings of the First World Congress of Science and Football, pp. 385-393, (1988); Martin D.F., Baker C.L., Curl W.W., Et al., Operative ankle arthroscopy. Long-term followup, Am J Sports Med, 17, pp. 16-23, (1989); Massada J.L., Ankle overuse injuries in soccer players. Morphological adaptation of the talus in the anterior impingement, J Sports Med Phys Fitness, 31, pp. 447-451, (1991); McCrudden M., Reilly T., A comparison of the punt and the drop-kick, Science and Football II, Proceedings of the Second World Congress of Science and Football, pp. 362-366, (1991); McMurray T.P., Footballer's ankle, J Bone Joint Surg, 32 B, pp. 68-69, (1950); Morris L.H., Report of cases of athlete's ankle, J Bone Joint Surg, 25, (1943); O'Donoghue D.H., Impingement exostoses of the talus and tibia, J Bone Joint Surg, 39 A, pp. 835-852, (1957); Ogilvie-Harris D.J., Gilbart M.K., Chorney K., Chronic pain following ankle sprains in athletes: The role of arthroscopic surgery, Arthroscopy, 13, pp. 564-574, (1997); Ogilvie-Harris D.J., Mahomed N., Demaziere A., Anterior impingement of the ankle treated by arthroscopic removal of bony spurs, J Bone Joint Surg, 75 B, pp. 437-440, (1993); Parisien J.S., Vangsness T., Operative arthroscopy of the ankle. Three years' experience, Clin Orthop, 199, pp. 46-53, (1985); Parkes J.C.H., Hamilton W.G., Patterson A.H., Et al., The anterior impingement syndrome of the ankle, J Trauma, 20, pp. 895-898, (1980); Resnick D., Talar ridges, osteophytes, and beaks: A radiologic commentary, Radiology, 151, pp. 329-332, (1984); Townsend M.S., Is heading the ball a dangerous activity?, Science and Football. Proceedings of the First World Congress of Science and Football, pp. 237-242, (1988); Van Dijk C.N., Bossuyt P.M., Marti R.K., Medial ankle pain after lateral ligament rupture, J Bone Joint Surg, 78 B, pp. 562-567, (1996); Van Dijk C.N., Tol J.L., Verheyen C.C.P.M., A prospective study of prognostic factors concerning the outcome of arthroscopic surgery for anterior ankle impingement, Am J Sports Med, 25, pp. 737-745, (1997)","","","American Orthopaedic Society for Sports Medicine","03635465","","AJSMD","11798995","English","Am. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-0036153403" "Myer G.D.; Ford K.R.; Khoury J.; Succop P.; Hewett T.E.","Myer, Gregory D. (6701852696); Ford, Kevin R. (7102539333); Khoury, Jane (35427121300); Succop, Paul (7005469665); Hewett, Timothy E. (7005201943)","6701852696; 7102539333; 35427121300; 7005469665; 7005201943","Biomechanics laboratory-based prediction algorithm to identify female athletes with high knee loads that increase risk of ACL injury","2011","British Journal of Sports Medicine","45","4","","245","252","7","132","10.1136/bjsm.2009.069351","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79958063357&doi=10.1136%2fbjsm.2009.069351&partnerID=40&md5=42dbabff73282c43b9d60f47af354b9b","Cincinnati Children's Hospital, Medical Center, Cincinnati, OH 45229, 3333 Burnet Avenue; MLC 10001, United States; Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States; Rocky Mountain University of Health Professions, Provo, UT, United States; Department of Pediatrics, University of Cincinnati, Cincinnati, OH, United States; Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital, Medical Center, Cincinnati, OH, United States; Department of Environmental Health, University of Cincinnati, Cincinnati, OH, United States; Department of Orthopaedic Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH, United States","Myer G.D., Cincinnati Children's Hospital, Medical Center, Cincinnati, OH 45229, 3333 Burnet Avenue; MLC 10001, United States, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Rocky Mountain University of Health Professions, Provo, UT, United States; Ford K.R., Cincinnati Children's Hospital, Medical Center, Cincinnati, OH 45229, 3333 Burnet Avenue; MLC 10001, United States, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Department of Pediatrics, University of Cincinnati, Cincinnati, OH, United States; Khoury J., Cincinnati Children's Hospital, Medical Center, Cincinnati, OH 45229, 3333 Burnet Avenue; MLC 10001, United States, Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital, Medical Center, Cincinnati, OH, United States; Succop P., Department of Environmental Health, University of Cincinnati, Cincinnati, OH, United States; Hewett T.E., Cincinnati Children's Hospital, Medical Center, Cincinnati, OH 45229, 3333 Burnet Avenue; MLC 10001, United States, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Department of Pediatrics, University of Cincinnati, Cincinnati, OH, United States, Department of Orthopaedic Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH, United States","Objective: Knee abduction moment (KAM) during landing predicts non-contact anterior cruciate ligament (ACL) injury risk with high sensitivity and specificity in female athletes. The purpose of this study was to employ sensitive laboratory (lab-based) tools to determine predictive mechanisms that underlie increased KAM during landing. Methods: Female basketball and soccer players (N=744) from a single county public school district were recruited to participate in testing of anthropometrics, maturation, laxity/flexibility, strength and landing biomechanics. Linear regression was used to model KAM, and logistic regression was used to examine high (>25.25 Nm of KAM) versus low KAM as surrogate for ACL injury risk. Results: The most parsimonious model included independent predictors (β±1 SE) (1) peak knee abduction angle (1.78±0.05; p<0.001), (2) peak knee extensor moment (0.17±0.01; p<0.001), (3) knee flexion range of motion (0.15±0.03; p<0.01), (4) body mass index (BMI) Z-score (-1.67±0.36; p<0.001) and (5) tibia length (-0.50±0.14; p<0.001) and accounted for 78% of the variance in KAM during landing. The logistic regression model that employed these same variables predicted high KAM status with 85% sensitivity and 93% specificity and a C-statistic of 0.96. Conclusions Increased knee abduction angle, quadriceps recruitment, tibia length and BMI with decreased knee flexion account for 80% of the measured variance in KAM during a drop vertical jump. Clinical relevance: Females who demonstrate increased KAM are more responsive and more likely to benefit from neuromuscular training. These findings should significantly enhance the identification of those at increased risk and facilitate neuromuscular training targeted to this important risk factor (high KAM) for ACL injury.","","Adolescent; Algorithms; Anterior Cruciate Ligament; Athletic Injuries; Basketball; Biomechanics; Body Mass Index; Child; Early Diagnosis; Female; Humans; Muscle Strength; Risk Assessment; Risk Factors; ROC Curve; Soccer; adolescent; algorithm; anterior cruciate ligament; article; basketball; biomechanics; body mass; child; early diagnosis; female; human; injury; methodology; muscle strength; physiology; receiver operating characteristic; risk assessment; risk factor; sport; sport injury","Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. 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Part 1: Match injuries, Br J Sports Med, 41, 1 SUPPL., (2007); SAS Program for the CDC Growth Charts; Meyer E.G., Villwock M.R., Haut R.C., Osteochondral microdamage from valgus bending of the human knee, Clin Biomech (Bristol, Avon), 24, pp. 577-582, (2009)","G.D. Myer; Cincinnati Children's Hospital, Medical Center, Cincinnati, OH 45229, 3333 Burnet Avenue; MLC 10001, United States; email: greg.myer@cchmc.org","","","14730480","","BJSMD","20558526","English","Br. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-79958063357" "Gaudino P.; Alberti G.; Iaia F.M.","Gaudino, Paolo (55326119100); Alberti, Giampietro (57219919222); Iaia, F. Marcello (14021728700)","55326119100; 57219919222; 14021728700","Estimated metabolic and mechanical demands during different small-sided games in elite soccer players","2014","Human Movement Science","36","","","123","133","10","156","10.1016/j.humov.2014.05.006","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902978299&doi=10.1016%2fj.humov.2014.05.006&partnerID=40&md5=d08eaff3133a67d93927daf553c20fc6","Department of Biomedical Science for Health, Università degli Studi di Milano, Milano, Italy","Gaudino P., Department of Biomedical Science for Health, Università degli Studi di Milano, Milano, Italy; Alberti G., Department of Biomedical Science for Health, Università degli Studi di Milano, Milano, Italy; Iaia F.M., Department of Biomedical Science for Health, Università degli Studi di Milano, Milano, Italy","The present study examined the extent to which game format (possession play, SSG-P and game with regular goals and goalkeepers, SSG-G) and the number of players (5, 7 and 10 a-side) influence the physical demands of small-sided soccer games (SSGs) in elite soccer players. Training data were collected during the in-season period from 26 English Premier League outfield players using global positioning system technology. Total distance covered, distance at different speed categories and maximal speed were calculated. In addition, we focused on changes in velocity by reporting the number of accelerations and decelerations carried out during the SSGs (divided in two categories: moderate and high) and the absolute maximal values of acceleration and deceleration achieved. By taking into account these parameters besides speed and distance values, estimated energy expenditure and average metabolic power and distance covered at different metabolic power categories were calculated. All variables were normalized by time (i.e., 4min). The main findings were that the total distance, distances run at high speed (>14.4kmh-1) as well as absolute maximum velocity, maximum acceleration and maximum deceleration increased with pitch size (10v10>7v7>5v5; p<.05). Furthermore, total distance, very high (19.8-25.2kmh-1) and maximal (>25.2kmh-1) speed distances, absolute maximal velocity and maximum acceleration and deceleration were higher in SSG-G than in SSG-P (p<.001). On the other hand, the number of moderate (2-3ms-2) accelerations and decelerations as well as the total number of changes in velocity were greater as the pitch dimensions decreased (i.e., 5v5>7v7>10v10; p<.001) in both SSG-G and SSG-P. In addition, predicted energy cost, average metabolic power and distance covered at every metabolic power categories were higher in SSG-P compared to SSG-G and in big than in small pitch areas (p<.05). A detailed analysis of these drills is pivotal in contemporary football as it enables an in depth understanding of the workload imposed on each player which consequently has practical implications for the prescription of the adequate type and amount of stimulus during exercise training. © 2014 Elsevier B.V.","Acceleration; Deceleration; Energy expenditure; GPS; Metabolic power","Acceleration; Adult; Athletes; Athletic Performance; Biomechanical Phenomena; Deceleration; Exercise; Geographic Information Systems; Humans; Male; Movement; Physical Exertion; Running; Soccer; Young Adult; acceleration; accelerometer; accident prevention; adult; article; athlete; body height; body mass; competition; conditioning; deceleration; energy cost; energy expenditure; exercise; football; global positioning system; human; metabolic rate; observational study; physical activity; physical parameters; physical performance; stimulus; training; velocity; workload; young adult; athletic performance; biomechanics; geographic information system; male; movement (physiology); physiology; running; soccer; Article; circadian rhythm; drill; informed consent; mathematical model; metabolic activation; metabolic parameters; physical performance; pitch; prediction; procedures; risk; soccer","Akenhead R., Hayes P.R., Thompson K.G., French D., Diminutions of acceleration and deceleration output during professional football match play, Journal of Science and Medicine in Sport, 16, pp. 556-561, (2013); Barbero-Alvarez J.C., Coutts A.J., Granda J., Barbero-Alvarez V., Castagna C., The validity and reliability of a global positioning satellite system device to assess speed and repeated sprint ability (RSA) in athletes, Journal of Science and Medicine in Sport, 13, pp. 232-235, (2010); Brandes M., Heitmann A., Muller L., Physical responses of different small-sided game formats in elite youth soccer players, Journal of Strength and Conditioning Research, 26, pp. 1353-1360, (2012); Buchheit M., Al Haddad H., Simpson B.M., Palazzi D., Bourdon P.C., Di Salvo V., Et al., Monitoring accelerations with GPS in football: Time to slow down?, International Journal of Sports Physiology and Performance, 9, pp. 442-445, (2014); 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Maddison R., Ni Mhurchu C., Global positioning system: A new opportunity in physical activity measurement, The International Journal of Behavioral Nutrition and Physical Activity, 6, (2009); Mallo J., Navarro E., Physical load imposed on soccer players during small-sided training games, The Journal of Sports Medicine and Physical Fitness, 48, pp. 166-171, (2008); Minetti A.E., Gaudino P., Seminati E., Cazzola D., The cost of transport of human running is not affected, as in walking, by wide acceleration/deceleration cycles, Journal of Applied Physiology, 114, pp. 498-503, (2013); Osgnach C., Poser S., Bernardini R., Rinaldo R., di Prampero P.E., Energy cost and metabolic power in elite soccer: A new match analysis approach, Medicine and Science in Sports and Exercise, 42, pp. 170-178, (2010); Perneger T.V., What's wrong with Bonferroni adjustments, British Medical Journal, 316, pp. 1236-1238, (1998); Portas M.D., Harley J.A., Barnes C.A., Rush C.J., The validity and reliability of 1-Hz and 5-Hz global positioning systems for linear, multidirectional, and soccer-specific activities, International Journal of Sports Physiology and Performance, 5, pp. 448-458, (2010); Rampinini E., Impellizzeri F.M., Castagna C., Abt G., Chamari K., Sassi A., Et al., Factors influencing physiological responses to small-sided soccer games, Journal of Sports Sciences, 25, pp. 659-666, (2007); Varley M.C., Aughey R.J., Acceleration profiles in elite Australian soccer, International Journal of Sports Medicine, 34, pp. 34-39, (2013); Varley M.C., Fairweather I.H., Aughey R.J., Validity and reliability of GPS for measuring instantaneous velocity during acceleration, deceleration, and constant motion, Journal of Sports Sciences, 30, pp. 121-127, (2012); Vincent W.J., Statistics in kinesiology, (1999); Waldron M., Worsfold P., Twist C., Lamb K., Concurrent validity and test-retest reliability of a global positioning system (GPS) and timing gate to assess sprint performance variables, Journal of Sports Sciences, 29, pp. 1613-1619, (2011)","P. Gaudino; 20129, Milano, Via Kramer 4, Italy; email: p.gaudino@hotmail.com","","Elsevier","01679457","","HMSCD","24968370","English","Hum. Mov. Sci.","Article","Final","","Scopus","2-s2.0-84902978299" "Nunome H.; Asai T.; Ikegami Y.; Sakurai S.","Nunome, Hiroyuki (6507093692); Asai, Takeshi (23395810600); Ikegami, Yasuo (7103189958); Sakurai, Shinji (57545689300)","6507093692; 23395810600; 7103189958; 57545689300","Three-dimensional kinetic analysis of side-foot and instep soccer kicks","2002","Medicine and Science in Sports and Exercise","34","12","","2028","2036","8","179","10.1097/00005768-200212000-00025","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036898762&doi=10.1097%2f00005768-200212000-00025&partnerID=40&md5=d43ab186ad072f3c8597a4c302d4b673","Res. Ctr. Hlth. Phys. Fitness/Sports, Research Center of Health, Nagoya University, Chikusa, Nagoya 464-8601, Furo-cho, Japan; Faculty of Education, Yamagata University, Yamagata, Japan","Nunome H., Res. Ctr. Hlth. Phys. Fitness/Sports, Research Center of Health, Nagoya University, Chikusa, Nagoya 464-8601, Furo-cho, Japan, Faculty of Education, Yamagata University, Yamagata, Japan; Asai T., Res. Ctr. Hlth. Phys. Fitness/Sports, Research Center of Health, Nagoya University, Chikusa, Nagoya 464-8601, Furo-cho, Japan, Faculty of Education, Yamagata University, Yamagata, Japan; Ikegami Y., Res. Ctr. Hlth. Phys. Fitness/Sports, Research Center of Health, Nagoya University, Chikusa, Nagoya 464-8601, Furo-cho, Japan, Faculty of Education, Yamagata University, Yamagata, Japan; Sakurai S., Res. Ctr. Hlth. Phys. Fitness/Sports, Research Center of Health, Nagoya University, Chikusa, Nagoya 464-8601, Furo-cho, Japan, Faculty of Education, Yamagata University, Yamagata, Japan","Purpose: The purpose of this study was to identify the kinetic aspects of side-foot and instep soccer kicks to understand the different mechanics underlying the two kicks. Methods: The motions of both kicks were captured using a three-dimensional cinematographic technique. The kicking leg was modeled as a three-link kinetic chain composed of thigh, shank, and foot, from which joint torques and angular velocities were computed. Results: The ball velocity of the side-foot kick (23.4 ± 1.7 m·s-1) was significantly slower than that of the instep kick (28.0 ± 2.1 m·s-1. Significant differences were also observed between the two kicks for the magnitude of hip external rotation torque (56 ± 12 N·m in the side-foot kick; 33 ± 8 N·m in the instep kick) and hip external rotation angular velocity (11.1 ± 2.4 rad·s-1 in the side-foot kick; 6.0 ± 2.0 rad·s-1 in the instep kick). Conclusion: These results indicated that to hit the ball with the medial side of the foot, a complicated series of rotational motions are required for the side-foot kick. The hip external rotation torque dominantly exhibited in the side-foot kick caused the clockwise rotation of the thigh-shank plane at the later stage of kicking. This may allow the hip external rotation motion to increase directly the forward velocity of the side foot, with which players can squarely impact the ball.","Direct linear transformation; Instep soccer kick; Kicking mechanics; Side-foot soccer kick","article; biomechanics; human; human experiment; kinetics; male; motion; normal human; rotation; sport; technique; torque; velocity","Abdel-Azis Y.I., Karara H.M., Direct linear transformation from comparator coordinates into object space coordinates in close-range photogrammetry, Proceedings of the ASP/UI Symposium on Close-Range Photogrammetry, pp. 1-18, (1971); Ae M., Tang H., Yokoi T., Estimation of inertial properties on the body segments in Japanese Athletes, Biomechanisms 11: Form, Motion, and Function in Humans, pp. 23-33, (1992); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Feltner M.E., Dapena J., Dynamics of the shoulder and elbow joints of the throwing arm during a baseball pitch, Int. J. Sport. Biomech., 2, pp. 235-259, (1986); Feltner M.E., Taylor G., Three-dimensional kinetics of the shoulder, elbow, and wrist during a penalty throw in water polo, J. Appl. Biomech., 13, pp. 347-372, (1997); Grant A., Reilly T., Williams M., Borrie A., Analysis of the goal scored in the 1998 world cup, F. A. Coach. Assoc. J., 2, pp. 18-20, (1998); Jensen R.K., Estimation of the biomechanical properties of three body types using a photogrammetric method, J. Biomech., 11, pp. 349-358, (1978); Lees A., Nolan L., The biomechanics of soccer: A review, J. Sport Sci., 16, pp. 211-234, (1998); Levanon J., Dapena J., Comparison of the kinematics of the full-instep kick and pass kicks in soccer, Med. Sci. Sports Exerc., 30, pp. 917-927, (1998); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 441-448, (1988); Putnam C.A., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Med. Sci. Sports Exerc., 23, pp. 130-141, (1991); Roberts E.M., Zernicke R.F., Youm Y., Huang T.C., Kinetic parameters of kicking, Biomechanics IV, pp. 157-162, (1974); Robertson D.G.E., Mosher P.E., Work and power of the leg muscles in soccer kicking, Biomechanics IX-B, pp. 533-538, (1985); Rodano R., Tavana R., Three dimensional analysis of the instep kick in professional soccer players, Science and Football II, pp. 357-361, (1993); Sprigings E., Marshall R., Elliot B., Jennings L., A three-dimensional kinematic method for determining the effective of arm segment rotations in producing racquet-head speed, J. Biomech., 27, pp. 245-254, (1994); Winter D.A., Biomechanics and Motor Control of Human Movement, pp. 36-45, (1990); Zernicke R.F., Roberts E.M., Lower extremity forces and torques during systematic variation of non-weight bearing motion, Med. Sci. Sports Exerc., 10, pp. 21-26, (1978)","H. Nunome; Res. Ctr. Hlth. Phys. Fitness/Sports, Nagoya University, Chikusa, Nagoya 464-8601, Furo-cho, Japan; email: nunome@htc.nagoya-u.ac.jp","","American College of Sports Medicine","01959131","","MSCSB","12471312","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-0036898762" "Thorborg K.; Couppé C.; Petersen J.; Magnusson S.P.; Hölmich P.","Thorborg, K. (36146306900); Couppé, C. (6506341197); Petersen, J. (57201919123); Magnusson, S.P. (55667462400); Hölmich, P. (55961966200)","36146306900; 6506341197; 57201919123; 55667462400; 55961966200","Eccentric hip adduction and abduction strength in elite soccer players and matched controls: A cross-sectional study","2011","British Journal of Sports Medicine","45","1","","10","13","3","82","10.1136/bjsm.2009.061762","https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650883339&doi=10.1136%2fbjsm.2009.061762&partnerID=40&md5=e599b0d5f59d586d2d72b3bead70f0a9","Department of Orthopaedic Surgery, Faculty of Health Sciences, University of Copenhagen, 2300 Copenhagen S, Italiensvej 1, Denmark; Institute of Sports Medicine Copenhagen, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark","Thorborg K., Department of Orthopaedic Surgery, Faculty of Health Sciences, University of Copenhagen, 2300 Copenhagen S, Italiensvej 1, Denmark; Couppé C., Institute of Sports Medicine Copenhagen, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark; Petersen J., Department of Orthopaedic Surgery, Faculty of Health Sciences, University of Copenhagen, 2300 Copenhagen S, Italiensvej 1, Denmark; Magnusson S.P., Institute of Sports Medicine Copenhagen, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark; Hölmich P., Department of Orthopaedic Surgery, Faculty of Health Sciences, University of Copenhagen, 2300 Copenhagen S, Italiensvej 1, Denmark","Background: Eccentric hip adduction and abduction strength plays an important role in the treatment and prevention of groin injuries in soccer players. Lower extremity strength deficits of less than 10% on the injured side, compared to the uninjured side, have been suggested as the clinical milestone before returning to sports following injury. Objective: To examine whether a side-to-side eccentric hip adduction or abduction strength symmetry can be assumed in non-injured soccer players and matched controls. Material and Methods: Nine elite soccer players 19.4 (1.5) years and nine recreational athletes 19.5 (2.0) years matched for sex, height and weight were included. Eccentric hip adduction and abduction strength of the dominant and non-dominant leg was tested for all the participants using an eccentric break test with a handheld dynamometer. Results: The dominant leg was 14% stronger than the non-dominant leg for hip adduction in the soccer players (p<0.05). No other side-to-side strength differences existed in soccer players or controls. In soccer players, hip abduction strength was 17-31% greater than controls for the dominant (p<0.05) and non-dominant leg (p<0.001). Conclusion: Eccentric hip adduction strength was greater in the dominant leg than in the non-dominant leg in soccer players, but not in matched controls. Eccentric hip abduction strength was greater in soccer players than matched controls, but soccer does not seem to induce a similar eccentric strength adaptation in the hip adductors.","","Biomechanics; Case-Control Studies; Cross-Sectional Studies; Hip; Humans; Male; Muscle Strength; Muscle, Skeletal; Soccer; Young Adult; adult; article; biomechanics; case control study; cross-sectional study; hip; human; male; muscle strength; physiology; skeletal muscle; sport","Engebretsen A.H., Myklebust G., Holme I., Et al., Prevention of injuries among male soccer players: A prospective, randomized intervention study targeting players with previous injuries or reduced function, Am. J. Sports Med., 36, pp. 1052-1060, (2008); Holmich P., Uhrskou P., Ulnits L., Et al., Effectiveness of active physical training as treatment for long-standing adductor-related groin pain in athletes: Randomised trial, Lancet, 353, pp. 439-443, (1999); Masuda K., Kikuhara N., Demura S., Et al., Relationship between muscle strength in various isokinetic movements and kick performance among soccer players, J. Sports Med. Phys. Fitness, 45, pp. 44-52, (2005); Delecluse C., Influence of strength training on sprint running performance. Current findings and implications for training, Sports Med., 24, pp. 147-156, (1997); Neptune R.R., Wright I.C., Van Den Bogert A.J., Muscle coordination and function during cutting movements, Med. Sci. Sports Exerc., 31, pp. 294-302, (1999); Barfield W.R., The biomechanics of kicking in soccer, Clin. Sports Med., 17, pp. 711-728, (1998); Dorge H.C., Andersen T.B., Sorensen H., Et al., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scand. J. Med. Sci. Sports, 9, pp. 195-200, (1999); Dorge H.C., Anderson T.B., Sorensen H., Et al., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, J. Sports Sci., 20, pp. 293-299, (2002); Lees A., Nolan L., The biomechanics of soccer: A review, J. Sports Sci., 16, pp. 211-234, (1998); Brophy R.H., Backus S.I., Pansy B.S., Et al., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, J. Orthop. Sports Phys. Ther., 37, pp. 260-268, (2007); Baczkowski K., Marks P., Silberstein M., Et al., A new look into kicking a football: An investigation of muscle activity using MRI, Australas Radiol., 50, pp. 324-329, (2006); Rahnama N., Lees A., Bambaecichi E., Comparison of muscle strength and flexibility between the preferred and non-preferred leg in English soccer players, Ergonomics, 48, pp. 1568-1575, (2005); Aagaard P., Simonsen E.B., Trolle M., Et al., Specificity of training velocity and training load on gains in isokinetic knee joint strength, Acta Physiol. Scand., 156, pp. 123-129, (1996); Hoff J., Kahler N., Helgerud J., Training and testing physical capacities for elite football players, Dtsch Z. Sportmed, 57, pp. 116-124, (2006); Manolopoulos E., Papadopoulos C., Salonikidis K., Et al., Strength training effects on physical conditioning and instep kick kinematics in young amateur soccer players during preseason, Percept Mot Skills, 99, pp. 701-710, (2004); Manolopoulos E., Papadopoulos C., Kellis E., Effects of combined strength and kick coordination training on soccer kick biomechanics in amateur players, Scand. J. Med. Sci. Sports, 16, pp. 102-110, (2006); Nicholas S.J., Tyler T.F., Adductor muscle strains in sport, Sports Med., 32, pp. 339-344, (2002); Wollin M., Lovell G., Osteitis pubis in four young football players: A case series demonstrating successful rehabilitation, Phys. Ther. Sport, 7, pp. 153-160, (2006); Augustsson J., Thomee R., Karlsson J., Ability of a new hop test to determine functional deficits after anterior cruciate ligament reconstruction, Knee Surg. 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Dev., 44, pp. 123-136, (2007); Krause D.A., Schlagel S.J., Stember B.M., Et al., Influence of lever arm and stabilization on measures of hip abduction and adduction torque obtained by hand-held dynamometry, Arch. Phys. Med. Rehabil., 88, pp. 37-42, (2007); Couppe C., Kongsgaard M., Aagaard P., Et al., Habitual loading results in tendon hypertrophy and increased stiffness of the human patellar tendon, J. Appl. Physiol., 105, pp. 805-810, (2008); Hides J., Stanton W., Freke M., Et al., MRI study of the size, symmetry and function of the trunk muscles among elite cricketers with and without low back pain, Br. J. Sports Med., 42, pp. 509-513, (2008); Magnusson S.P., Gleim G.W., Nicholas J.A., Shoulder weakness in professional baseball pitchers, Med. Sci. Sports Exerc., 26, pp. 5-9, (1994); Hides J.A., Fan T., Stanton W.R., Et al., Psoas and quadratus lumborum muscle asymmetry among elite Australian football league players, Br. J. Sports Med., 44, pp. 563-567, (2010); Masuda K., Kikuhara N., Takahashi H., Et al., The relationship between muscle cross-sectional area and strength in various isokinetic movements among soccer players, J. Sports Sci., 21, pp. 851-858, (2003); Magnusson S.P., Gleim G.W., Nicholas J.A., Subject variability of shoulder abduction strength testing, Am. J. Sports Med., 18, pp. 349-353, (1990); Holmich P., Long-standing groin pain in sportspeople falls into three primary patterns, a ""clinical entity"" approach: A prospective study of 207 patients, Br. J. Sports Med., 41, pp. 247-252, (2007); Dimitrakopoulou A., Schilders E.M., Talbot J.C., Et al., Acute avulsion of the fibrocartilage origin of the adductor longus in professional soccer players: A report of two cases, Clin. J. Sport Med., 18, pp. 167-169, (2008); Lohrer H., Nauck T., Proximal adductor longus tendon tear in high level athletes. A report of three cases, Sportverletz Sportschaden, 21, pp. 190-194, (2007); Rizio III L., Salvo J.P., Schurhoff M.R., Et al., Adductor longus rupture in professional football players: Acute repair with suture anchors: A report of two cases, Am. J. Sports Med., 32, pp. 243-245, (2004); Arnason A., Andersen T.E., Holme I., Et al., Prevention of hamstring strains in elite soccer: An intervention study, Scand. J. Med. Sci. Sports, 18, pp. 40-48, (2008); Askling C., Karlsson J., Thorstensson A., Hamstring injury occurrence in elite soccer players after preseason strength training with eccentric overload, Scand. J. Med. Sci. Sports, 13, pp. 244-250, (2003); Croisier J.L., Forthomme B., Namurois M.H., Et al., Hamstring muscle strain recurrence and strength performance disorders, Am. J. Sports Med., 30, pp. 199-203, (2002); Mjolsnes R., Arnason A., Osthagen T., Et al., A 10-week randomized trial comparing eccentric vs. concentric hamstring strength training in well-trained soccer players, Scand. J. Med. Sci. Sports, 14, pp. 311-317, (2004)","K. Thorborg; Department of Orthopaedic Surgery, Faculty of Health Sciences, University of Copenhagen, 2300 Copenhagen S, Italiensvej 1, Denmark; email: kristian.thorborg@amh.regionh.dk","","","14730480","","BJSMD","19850576","English","Br. J. Sports Med.","Article","Final","","Scopus","2-s2.0-78650883339" "Zebis M.K.; Skotte J.; Andersen C.H.; Mortensen P.; Petersen H.H.; Viskær T.C.; Jensen T.L.; Bencke J.; Andersen L.L.","Zebis, Mette Kreutzfeldt (16641697800); Skotte, Jørgen (6701627941); Andersen, Christoffer H. (24166393800); Mortensen, Peter (53064279200); Petersen, Højland H. (55943847900); Viskær, Tine C. (55943883800); Jensen, Tanja L. (55943849300); Bencke, Jesper (6602699399); Andersen, Lars L. (26634786600)","16641697800; 6701627941; 24166393800; 53064279200; 55943847900; 55943883800; 55943849300; 6602699399; 26634786600","Kettlebell swing targets semitendinosus and supine leg curl targets biceps femoris: An EMG study with rehabilitation implications","2013","British Journal of Sports Medicine","47","18","","1192","1198","6","79","10.1136/bjsports-2011-090281","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84888644137&doi=10.1136%2fbjsports-2011-090281&partnerID=40&md5=8086ff23b381f5d77990f1b87d509e49","University of Southern Denmark, Institute of Sports Science and Clinical Biomechanics, DK-5230 Odense, Campusvej 55, Denmark; Gait Analysis Laboratory, Hvidovre Hospital, Hvidovre, Denmark; National Research Centre for the Working Environment, Copenhagen, Denmark; School of Physiotherapy, Copenhagen, Denmark","Zebis M.K., University of Southern Denmark, Institute of Sports Science and Clinical Biomechanics, DK-5230 Odense, Campusvej 55, Denmark, Gait Analysis Laboratory, Hvidovre Hospital, Hvidovre, Denmark; Skotte J., National Research Centre for the Working Environment, Copenhagen, Denmark; Andersen C.H., National Research Centre for the Working Environment, Copenhagen, Denmark; Mortensen P., National Research Centre for the Working Environment, Copenhagen, Denmark; Petersen H.H., School of Physiotherapy, Copenhagen, Denmark; Viskær T.C., School of Physiotherapy, Copenhagen, Denmark; Jensen T.L., School of Physiotherapy, Copenhagen, Denmark; Bencke J., Gait Analysis Laboratory, Hvidovre Hospital, Hvidovre, Denmark; Andersen L.L., National Research Centre for the Working Environment, Copenhagen, Denmark","Background The medial hamstring muscle has the potential to prevent excessive dynamic valgus and external rotation of the knee joint during sports. Thus, specific training targeting the medial hamstring muscle seems important to avoid knee injuries. Objective The aim was to investigate the medial and lateral hamstring muscle activation balance during 14 selected therapeutic exercises. Study design The study design involved singleoccasion repeated measures in a randomised manner. Sixteen female elite handball and soccer players with a mean (SD) age of 23 (3) years and no previous history of knee injury participated in the present study. Electromyographic (EMG) activity of the lateral (biceps femoris - BF) and medial (semitendinosus - ST) hamstring muscle was measured during selected strengthening and balance/coordination exercises, and normalised to EMG during isometric maximal voluntary contraction (MVC). A two-way analysis of variance was performed using the mixed procedure to determine whether differences existed in normalised EMG between exercises and muscles. Results Kettlebell swing and Romanian deadlift targeted specifically ST over BF (Δ17-22%, p>0.05) at very high levels of normalised EMG (73-115% of MVC). In contrast, the supine leg curl and hip extension specifically targeted the BF over the ST (Δ 20-23%, p>0.05) at very high levels of normalised EMG (75-87% of MVC). Conclusion Specific therapeutic exercises targeting the hamstrings can be divided into ST dominant or BF dominant hamstring exercises. Due to distinct functions of the medial and lateral hamstring muscles, this is an important knowledge in respect to prophylactic training and physical therapist practice.","","Biomechanical Phenomena; Electromyography; Exercise; Exercise Therapy; Female; Humans; Isometric Contraction; Lower Extremity; Movement; Muscle Strength; Muscle, Skeletal; Postural Balance; Range of Motion, Articular; Supine Position; Young Adult; article; biomechanics; body equilibrium; electromyography; exercise; female; human; joint characteristics and functions; kinesiotherapy; leg; methodology; movement (physiology); muscle isometric contraction; muscle strength; physiology; skeletal muscle; supine position; young adult","Myklebust G., Engebretsen L., Braekken I.H., Et al., Prevention of anterior cruciate ligament injuries in female team handball players: A prospective intervention study over three seasons, Clin J Sport Med, 13, pp. 71-78, (2003); Olsen O.E., Myklebust G., Engebretsen L., Et al., Exercises to prevent lower limb injuries in youth sports: Cluster randomised controlled trial, BMJ, 330, (2005); 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Zebis; University of Southern Denmark, Institute of Sports Science and Clinical Biomechanics, Odense, Campusvej 55 DK-5230, Denmark; email: mettezebis@hotmail.com","","","14730480","","BJSMD","22736206","English","Br. J. Sports Med.","Article","Final","","Scopus","2-s2.0-84888644137" "Difiori J.P.; Benjamin H.J.; Brenner J.; Gregory A.; Jayanthi N.; Landry G.L.; Luke A.","Difiori, John P. (6701738194); Benjamin, Holly J. (7006722319); Brenner, Joel (15759041200); Gregory, Andrew (15759644100); Jayanthi, Neeru (13405041000); Landry, Greg L. (35433362800); Luke, Anthony (56253089700)","6701738194; 7006722319; 15759041200; 15759644100; 13405041000; 35433362800; 56253089700","Overuse injuries and burnout in youth sports: A position statement from the American medical society for sports medicine","2014","Clinical Journal of Sport Medicine","24","1","","3","20","17","191","10.1097/JSM.0000000000000060","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84891856844&doi=10.1097%2fJSM.0000000000000060&partnerID=40&md5=dc3f4c75aeab1d8c6496ad11b9a9157a","Division of Sports Medicine, Department of Family Medicine, University of California, Los Angeles, CA 90095, 10833 Le Conte Ave, United States; Departments of Pediatrics and Orthopaedic Surgery, University of Chicago, Chicago, IL, United States; Children's Hospital of the King's Daughters, Eastern Virginia School of Medicine, Department of Pediatrics, Norfolk, VA, United States; Departments of Orthopedics and Pediatrics, Vanderbilt University School of Medicine, Nashville, TN, United States; Departments of Family Medicine and Orthopaedic Surgery and Rehabilitation, Loyola University Chicago, Stritch School of Medicine, Maywood, IL, United States; University of Wisconsin School of Medicine and Public Health, Departments of Pediatrics and Orthopedics, Madison, WI, United States; Departments of Orthopaedics and Family Medicine, University of California, San Francisco, San Francisco, CA, United States","Difiori J.P., Division of Sports Medicine, Department of Family Medicine, University of California, Los Angeles, CA 90095, 10833 Le Conte Ave, United States; Benjamin H.J., Departments of Pediatrics and Orthopaedic Surgery, University of Chicago, Chicago, IL, United States; Brenner J., Children's Hospital of the King's Daughters, Eastern Virginia School of Medicine, Department of Pediatrics, Norfolk, VA, United States; Gregory A., Departments of Orthopedics and Pediatrics, Vanderbilt University School of Medicine, Nashville, TN, United States; Jayanthi N., Departments of Family Medicine and Orthopaedic Surgery and Rehabilitation, Loyola University Chicago, Stritch School of Medicine, Maywood, IL, United States; Landry G.L., University of Wisconsin School of Medicine and Public Health, Departments of Pediatrics and Orthopedics, Madison, WI, United States; Luke A., Departments of Orthopaedics and Family Medicine, University of California, San Francisco, San Francisco, CA, United States","[No abstract available]","","Adolescent; Athletic Injuries; Child; Cumulative Trauma Disorders; Humans; Risk Factors; Sports; Stress, Psychological; adolescent; anatomical variation; ankle fracture; arm injury; arthropathy; article; athlete; backache; baseball; biomechanics; bone stress; burnout; child development; child growth; chronic stress; Cinahl; clinical feature; competition; conservative treatment; cumulative trauma disorder; diagnostic imaging; elbow injury; environmental factor; equipment; femur neck fracture; fitness; foot fracture; football; growth acceleration; high risk population; hip injury; human; joint mobility; juvenile; knee injury; lumbar spine; medical society; Medline; menstruation disorder; 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A quantitative psychological assessment, Sport Psychologist, 10, 4, pp. 322-340, (1996)","J.P. Difiori; Division of Sports Medicine, Department of Family Medicine, University of California, Los Angeles, CA 90095, 10833 Le Conte Ave, United States; email: JDiFiori@mednet.ucla.edu","","","15363724","","CJSME","24366013","English","Clin. J. Sport Med.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-84891856844" "Havens K.L.; Sigward S.M.","Havens, Kathryn L. (54581068700); Sigward, Susan M. (9735729200)","54581068700; 9735729200","Cutting mechanics: Relation to performance and anterior cruciate ligament injury risk","2015","Medicine and Science in Sports and Exercise","47","4","","818","824","6","75","10.1249/MSS.0000000000000470","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925623395&doi=10.1249%2fMSS.0000000000000470&partnerID=40&md5=b4ebc92eec0b1672e99f2b55d50fb207","Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 Alcazar St., Los Angeles, 90089, CA, United States","Havens K.L., Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 Alcazar St., Los Angeles, 90089, CA, United States; Sigward S.M., Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 Alcazar St., Los Angeles, 90089, CA, United States","Purpose: Quick changes of direction during running (cutting) are necessary for successful performance ofmany sports but are associatedwith noncontact anterior cruciate ligament (ACL) injuries. Currently, it is not known how biomechanics associated with fast performance of cutting tasks relate to the mechanics associated with increased risk for injury.Without this knowledge, the technique emphasized in injury prevention programs may be at odds with the demands of cutting tasks. The purposes of this study were to 1) identify whole body and/or joint mechanics that are related to completion times of 45- and 90- cuts and, from these variables, 2) determine which variables are predictors of performance (i.e., completion time) and/or ACL injury risk (i.e., peak knee adductor moment). Methods: Whole body and joint biomechanics were analyzed during the execution of two sidestep cutting maneuvers (to 45- and 90-) in 25 healthy experienced soccer players. Pearson correlation coefficients and stepwise multiple regression were used to analyze relations between variables. Results: The variables predictive of 45- cut performance included hip extensor moment and hip sagittal plane power generation as well as medial-lateral center-of-mass to center-of-pressure separation distance. This separation distance was also predictive of peak knee adductor moment. During the 90- cut, medial-lateral ground reaction force impulse and hip frontal plane power generation were predictive of performance whereas hip internal rotation and knee extensor moment were predictive of peak knee adductor moment. Conclusions: These relations have important implications for ACL injury prevention programs. 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Sci. Sports Exerc.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-84925623395" "Masuda K.; Kikuhara N.; Demura S.; Katsuta S.; Yamanaka K.","Masuda, K. (7401446834); Kikuhara, N. (6504052375); Demura, S. (7006643537); Katsuta, S. (7007011658); Yamanaka, K. (7202422031)","7401446834; 6504052375; 7006643537; 7007011658; 7202422031","Relationship between muscle strength in various isokinetic movements and kick performance among soccer players","2005","Journal of Sports Medicine and Physical Fitness","45","1","","44","52","8","79","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33745442685&partnerID=40&md5=80414d36e774ead4f037f57d94807a72","Faculty of Education, Kanazawa University, Ishikawa, Japan; Faculty of Business Administration, Osaka University of Commerce, Osaka, Japan; Graduate School of Integrated Science and Art, University of East Asia, Yamaguchi, Japan; Institute of Health and Sport Science, University of Tsukuba, Ibaraki, Japan; Faculty of Education, Kanazawa University, Kanazawa-City, Ishikawa 920-1192, Kazuma-machi, Japan","Masuda K., Faculty of Education, Kanazawa University, Ishikawa, Japan, Faculty of Education, Kanazawa University, Kanazawa-City, Ishikawa 920-1192, Kazuma-machi, Japan; Kikuhara N., Faculty of Business Administration, Osaka University of Commerce, Osaka, Japan; Demura S., Faculty of Education, Kanazawa University, Ishikawa, Japan; Katsuta S., Graduate School of Integrated Science and Art, University of East Asia, Yamaguchi, Japan; Yamanaka K., Institute of Health and Sport Science, University of Tsukuba, Ibaraki, Japan","Aim. The present study was carried out to examine relationships between muscular strength and ball velocity with respect to 3 different approach angles and focussing on both the kicking leg and the supporting leg among soccer players of different skill levels. Methods. Fourteen university soccer players were divided into 2 groups (superior group, average group), and kicked the ball with maximal effort towards a target 15 m away. The angles of approach to the stationary ball varied in 3 directions (free, 1.57, 2.36 rad to the kick direction). Mean ball velocity and the success rate of striking the target with the ball were measured. Maximal isokinetic and concentric muscular strength was measured in terms of motions of the knee Ext/Flex, hip Ext/Flex and hip Abd/Add using an isokinetic dynamometer. Results. The mean ball velocity at free and 1.57 rad approach angles related significantly with hip Add but not with knee Ext strength for the kicking leg. In contrast, the ball velocity at an approach angle of 2.36 rad significantly correlated with knee Ext and hip Flex of the kicking leg. Although ball velocity at the free and the 1.57 rad approach angles showed no relation to strength of the supporting leg, the ball velocity at the 2.36 rad approach angle showed a significant relationship with knee Flex, hip Ext and hip Abd strength of the supporting leg. Furthermore, the superior group had more strength variables related to performance than the average group. Conclusion. Different approach angles would alter the requirement on muscle strength potential of both kicking and supporting leg during kicking. Especially an angled approach to the kick direction could require greater hip extension and abduction strength on the supporting leg for a higher capability for stabilizing body balance. Besides, skill level may alter the importance of muscle strength requirement to kick performance.","Leg; Muscle, strength, physiology; Soccer","Adult; Analysis of Variance; Biomechanics; Hip; Humans; Knee; Leg; Male; Muscle Contraction; Muscle, Skeletal; Soccer; adult; article; concentric muscle contraction; controlled study; hip; human; human experiment; knee; muscle isometric contraction; muscle strength; sport; velocity","Anderson D.I., Sidaway B., Coordination changes associated with practice of a soccer kick, Res Q Exerc Sport, 65, pp. 93-99, (1994); De Proft E., Clarys J.P., Bollens E., Cabri J., Dufour W., Muscle activity in the soccer kick, Science and Football, pp. 434-440, (1988); Hagiwara T., Tokuyama H., A study of fundamental movement in soccer: A kinesiological study of instep kicking, Bull Inst Health Sports Sci, 6, pp. 101-111, (1983); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 441-448, (1988); McLean B.D., Tumilty M., Left-right asymmetry in two types of soccer kick, Br J Sports Med, 27, pp. 260-262, (1993); Oberg B., Moller M., Gillquist J., Ekstrand J., Isokinetic torque levels for knee extensors and knee flexors in soccer players, Int J Sports Med, 7, pp. 50-53, (1986); Rochcongar P., Morvan R., Jan J., Dassonville J., Beillot J., Isokinetic investigation of the knee extensors and knee flexors in young French soccer players, Int J Sports Med, 9, pp. 448-450, (1988); Cabri J., De Proft E., Dufour W., Clarys J.P., The relation between muscular strength and kick performance, Science and Football, pp. 186-193, (1988); Isokawa M., Lees A., A biomechanical analysis of the instep kick motion in soccer, Science and Football, pp. 449-455, (1988); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med Sci Sports Exerc, 30, pp. 917-927, (1988); Opavsky P., An investigation of linear and angular kinematics of the leg during two types of soccer kick, Science and Football, pp. 456-459, (1988); De Proft E., Cabri J., Dufour W., Clarys J.P., Strength training and kick performance in soccer players, Science and Football, pp. 108-113, (1988); Mognoni P., Narici V., Sirtori D., Lorenzelli F., Isokinetic torques and kicking maximal ball velocity in young soccer player, J Sports Med Phys Fitness, 34, pp. 357-361, (1994); Narici M.V., Sirtori M.D., Mognoni P., Maximal ball velocity and peak torques of hip flexor and knee extensor muscles, Science and Football, pp. 429-433, (1988); Poulmedis P., Rondoyannis G., Mitsou A., Tsarouchas E., The influence of isokinetic muscle torque exerted in various speeds on soccer ball velocity, J Orthopae Sports Phys Ther, 10, pp. 93-96, (1988); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Aagaard H., Dyhre-Poulsen P., Et al., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scandinavian J Med Sci Sports, 9, pp. 195-200, (1999); Masuda K., Kikuhara N., Takahashi H., Yamanaka K., Relationship between muscle cross-sectional area and strength in various isokinetic movements among soccer players, J Sports Sci, 21, pp. 851-858, (2003); Saliba L., Hrysomallis C., Isokinetic strength related to jumping but not kicking performance of Australian footballers, J Sci Med Sport, 4, pp. 336-347, (2001); Wickstrom R.L., Developmental kinesiology, Exerc Sports Sci Rev, 3, pp. 163-192, (1975); Asami T., Nolle V., Analysis of powerful ball kicking, Jpn J Sports Sci, 1, pp. 62-67, (1982); Shibukawa K., Effect of joint fixating when kicking a soccer ball, Bulletin Inst Health Sports Sci, Univ of Tsukuba, 11, pp. 81-83, (1973); Asami T., Togari H., Study on kicking in soccer, Jpn J Phys Educ Health Sports Sci, 12, pp. 267-272, (1968); Aagaard P., Simonsen E.B., Trolle M., Bangsbo J., Klausen K., Specificity of training velocity and training load on gains in isokinetic knee joint strength, Acta Physiol Scand, 156, pp. 123-129, (1996)","K. Masuda; Faculty of Education, Kanazawa University, Kanazawa-City, Ishikawa 920-1192, Kazuma-machi, Japan; email: masuda@ed.kanazawa-u.ac.jp","","","00224707","","JMPFA","16208290","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-33745442685" "Hori N.; Newton R.U.; Andrews W.A.; Kawamori N.; Mcguigan M.R.; Nosaka K.","Hori, Naruhiro (8671670900); Newton, Robert U. (7401830989); Andrews, Warren A. (57617588300); Kawamori, Naoki (13406875800); Mcguigan, Michael R. (7005162560); Nosaka, Kazunori (7005201843)","8671670900; 7401830989; 57617588300; 13406875800; 7005162560; 7005201843","Comparison of four different methods to measure power output during the hang power clean and the weighted jump squat","2007","Journal of Strength and Conditioning Research","21","2","","314","320","6","111","10.1519/R-22896.1","https://www.scopus.com/inward/record.uri?eid=2-s2.0-34250801581&doi=10.1519%2fR-22896.1&partnerID=40&md5=942c1c17a5288ab45cd50fc617c6fdce","School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia","Hori N., School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia; Newton R.U., School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia; Andrews W.A., School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia; Kawamori N., School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia; Mcguigan M.R., School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia; Nosaka K., School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia","Hori, N., R.U. Newton, W.A. Andrews, N. Kawamori, M.R. McGuigan, and K. Nosaka. Comparison of four different methods to measure power output during the hang power clean and the weighted jump squat. J. Strength Cond. Res. 21(2):314-320. 2007. - Measurement of power output during resistance training is becoming ubiquitous in strength and conditioning programs, but there is great variation in the methods used. The main purposes of this study were to compare the power output values obtained from 4 different methods and to examine the relationships between these values. Male semiprofessional Australian rules football players (n = 30) performed hang power clean and weighted jump squat while ground reaction force (GRF)-time data and barbell displacement-time data were sampled simultaneously using a force platform and a linear position transducer attached to the barbell. Peak and mean power applied to the barbell was obtained from barbell displacement-time data (method 1). Peak and mean power applied to the system (barbell + lifter) was obtained from 3 other methods: (a) using GRF-time data (method 2), (b) using barbell displacement-time data (method 3), and (c) using both barbell displacement-time data and GRF-time data (method 4). The peak power values (W) obtained from methods 1, 2, 3, and 4 were (mean ± SD) 1,644 ± 295, 3,079 ± 638, 3,821 ± 917, and 4,017 ± 833 in hang power clean and 1,184 ± 115, 3,866 ± 451, 3,567 ± 494, and 4,427 ± 557 in weighted jump squat. There were significant differences between power output values obtained from method 1 vs. methods 2, 3, and 4, as well as method 2 vs. methods 3 and 4. The power output applied to the barbell and that applied to the system was significantly correlated (r = 0.65-0.81). As a practical application, it is important to understand the characteristics of each method and consider how power output should be measured during the hang power clean and the weighted jump squat. © 2007 National Strength & Conditioning Association.","Barbell displacement; Force platform; Ground reaction force; Position transducer; Weightlifting","Adult; Analysis of Variance; Biomechanics; Humans; Male; Muscle Contraction; Muscle, Skeletal; Physical Education and Training; Soccer; Task Performance and Analysis; Weight Lifting; Weight-Bearing; adult; analysis of variance; article; biomechanics; comparative study; human; male; methodology; muscle contraction; physical education; physiology; skeletal muscle; sport; task performance; weight bearing; weight lifting","BAKER D., Acute and long-term power response to power training: Observations on the training of an elite power athlete, Strength Cond. J, 23, 1, pp. 47-56, (2001); BAKER D., NANCE S., The relation between running speed and measures of strength and power in professional rugby league players, J. Strength Cond. Res, 13, pp. 230-236, (1999); BAKER D., NANCE S., MOORE M., The load that maximizes the average mechanical power output during explosive bench press throws in highly trained athletes, J. Strength Cond. Res, 15, pp. 20-24, (2001); BAKER D., NANCE S., MOORE M., The load that maximizes the average mechanical power output during jump squats in power-trained athletes, J. Strength Cond. Res, 15, pp. 92-97, (2001); CHIU L.Z.F., FRY A.C., WEISS L.W., SCHILLING B.K., BROWN L.E., SMITH S.L., Postactivation potentiation response in athletic and recreationally trained individuals, J. Strength Cond. Res, 17, pp. 671-677, (2003); CHIU L.Z.F., SCHILLING B.K., FRY A.C., WEISS L.W., Measurement of resistance exercise force expression, J. Appl. Biomech, 20, pp. 204-212, (2004); DUGAN E., DOYLE T.L.A., HUMPHRIES B., HASSON C.J., NEWTON R.U., Determining the optimal load for jump squats: A review of methods and calculations, J. Strength Cond. Res, 18, pp. 668-674, (2004); HAFF G.G., STONE M., O'BRYANT H.S., HARMAN E., DIAN C., JOHNSON R., HAN K.-H., Force-time dependent characteristics of dynamic and isometric muscle actions, J. Strength Cond. Res, 11, pp. 269-272, (1997); HARMAN E.A., ROSENSTEIN M.T., FRYKMAN P.N., ROSENSTEIN R.M., KRAEMER W.J., Estimation of human power output from vertical jump, J. Appl. Sports Sci. Res, 5, pp. 116-120, (1991); HORI N., NEWTON R.U., NOSAKA K., MCGUIGAN M.R., Comparison of different methods of determining power output in weightlifting exercises, Strength Cond. J, 28, 2, pp. 34-40, (2006); KAWAMORI N., CRUM A.J., BLUMERT P.A., KULIK J.R., CHILDERS J.T., WOOD J.A., STONE M.H., HAFF. G.G., Influence of different relative intensities on power output during the hang power clean: Identification of the optimal load, J. Strength Cond. Res, 19, pp. 698-708, (2005); MOORE C.A., FRY A.C., MELTON A.J., WEISS L.W., ROSATO F.D., Power and velocity production for different relative intensities for the hang power clean exercise [Abstract], J. Strength Cond. Res, 17, (2003); NEWTON R.U., DUGAN E., Application of strength diagnosis, Strength Cond. J, 24, 5, pp. 50-59, (2002); NEWTON R.U., KRAEMER W.J., Developing explosive muscular power: Implications for a mixed methods training strategy, Strength Cond, 16, 4, pp. 20-31, (1994); NEWTON R.U., KRAEMER W.J., HAKKINEN K., Effects of ballistic training on preseaaon preparation of elite Volleyball players, Med. Sci. Sports Exerc, 31, pp. 323-330, (1999); PLISK S., STONE M.H., Periodization strategies, Strength Cond. J, 17, 6, pp. 19-37, (2003); STONE M.H., O'BRYANT H.S., MCCOY L., COGLIANESE R., LEHMKUHL M., SCHILLING B., Power and maximum strength relationships during performance of dynamic and static weight jumps, J. Strength Cond. Res, 17, pp. 140-147, (2003); STONE M.H., SANBORN K., O'BRYANT H.S., HARTMAN M., STONE M.E., PROULX C., WARD B., HRUBY J., Maximum strength-power-performance relationships in college throwers, J. Strength Cond. Res, 17, pp. 739-745, (2003); WINCHESTER J.B., ERICKSON T.M., BLAAK J.B., MCBBIDE J.M., Changes in bar-path kinematics and kinetics after power-clean training, J. Strength Cond. Res, 19, pp. 177-183, (2005); WOOD G.A., Data smoothing and differentiation procedures in biomechanics, Exerc. Sports Sci. Rev, 10, pp. 308-362, (1982); YOUNG W.B., NEWTON R.U., DOYLE T.L., CHAPMAN D., CORMACK S., STEWART G., DAWSON B., Physiological and anthropometric characteristics of starters and non-starters and playing positions in elite Australian Rules football: A case study, J. Sci. Med. Sport, 8, pp. 333-345, (2005)","N. Hori; School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia; email: n.hori@ecu.edu.au","","","10648011","","","17530989","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-34250801581" "Barker L.A.; Harry J.R.; Mercer J.A.","Barker, Leland A. (57193807689); Harry, John R. (56669467000); Mercer, John A (35447990100)","57193807689; 56669467000; 35447990100","Relationships between countermovement jump ground reaction forces and jump height, reactive strength index, and jump time","2018","Journal of Strength and Conditioning Research","32","1","","248","","","107","10.1519/JSC.0000000000002160","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85047562673&doi=10.1519%2fJSC.0000000000002160&partnerID=40&md5=8052a7ffa1394e42a51fe918ddc881e1","Department of Kinesiology and Nutrition Sciences, Biomechanics Laboratory, University of Nevada Las Vegas, Las Vegas, NV, United States; Department of Kinesiology and Sport Management, Human Performance Laboratory, Texas Tech University, Lubbock, TX","Barker L.A., Department of Kinesiology and Nutrition Sciences, Biomechanics Laboratory, University of Nevada Las Vegas, Las Vegas, NV, United States; Harry J.R., Department of Kinesiology and Nutrition Sciences, Biomechanics Laboratory, University of Nevada Las Vegas, Las Vegas, NV, United States, Department of Kinesiology and Sport Management, Human Performance Laboratory, Texas Tech University, Lubbock, TX; Mercer J.A., Department of Kinesiology and Nutrition Sciences, Biomechanics Laboratory, University of Nevada Las Vegas, Las Vegas, NV, United States","The purpose of this study was to determine the relationship between ground reaction force (GRF) variables to jump height, jump time, and the reactive strength index (RSI). Twenty-six, Division-I, male, soccer players performed 3 maximum effort countermovement jumps (CMJs) on a dual-force platform system that measured 3-dimensional kinetic data. The trial producing peak jump height was used for analysis. Vertical GRF (Fz) variables were divided into unloading, eccentric, amortization, and concentric phases and correlated with jump height, RSI (RSI = jump height/jump time), and jump time (from start to takeoff). Significant correlations were observed between jump height and RSI, concentric kinetic energy, peak power, concentric work, and concentric displacement. Significant correlations were observed between RSI and jump time, peak power, unload Fz, eccentric work, eccentric rate of force development (RFD), amortization Fz, amortization time, second Fz peak, average concentric Fz, and concentric displacement. Significant correlations were observed between jump time and unload Fz, eccentric work, eccentric RFD, amortization Fz, amortization time, average concentric Fz, and concentric work. In conclusion, jump height correlated with variables derived from the concentric phase only (work, power, and displacement), whereas Fz variables from the unloading, eccentric, amortization, and concentric phases correlated highly with RSI and jump time. These observations demonstrate the importance of countermovement Fz characteristics for time-sensitive CMJ performance measures. Researchers and practitioners should include RSI and jump time with jump height to improve their assessment of jump performance. © 2017 National Strength and Conditioning Association.","Correlation; Elastic energy; Jumping; Performance","Adolescent; Athletes; Biomechanical Phenomena; Exercise Test; Humans; Male; Muscle Strength; Muscle, Skeletal; Soccer; Young Adult; adult; article; controlled study; ground reaction force; height; human; jumping; male; physician; scientist; soccer player; adolescent; athlete; biomechanics; exercise test; muscle strength; physiology; skeletal muscle; soccer; young adult","Altman A.R., Davis I.S., Barefoot running: Biomechanics and implications for running injuries, Curr Sport Med Rep, 11, pp. 244-250, (2012); Barker L.A., Harry J.R., Dufek J.S., Mercer J.A., Aerial rotation effects on vertical jump performance among highly skilled collegiate soccer players, J Strength Cond Res, 31, pp. 932-938, (2017); Bobbert M.F., Gerritsen K., Litjens M., VanSoest A.J., Why is countermovement jump height greater than squat jump height?, Med Sci Sports Exerc, 28, pp. 1402-1412, (1996); Cormie P., McBride J.M., McCaulley G.O., Power-time, force-time, and velocity-time curve analysis during the jump squat: Impact of load, J Applied Biomechanics, 24, (2008); Cormie P., McGuigan M.R., Newton R.U., Changes in the eccentric phase contribute to improved stretch-shorten cycle performance after training, Med Sci Sports Exerc, 42, pp. 1731-1744, (2010); Cronin J.B., Hansen K.T., Strength and power predictors of sports speed, J Strength Cond Res, 19, pp. 349-357, (2005); Flanagan E.P., Comyns T.M., The use of contact time and the reactive strength index to optimize fast stretch-shortening cycle training, Strength Cond J, 30, pp. 32-38, (2008); Komi P.V., Stretch-shortening cycle: A powerful model to study normal and fatigued muscle, J Biomech, 33, pp. 1197-1206, (2000); Laffaye G., Wagner P., Eccentric rate of force development determines jumping performance, Comput Methods Biomech Biomed Engin, 16, pp. 82-83, (2013); Lees A., Vanrenterghem J., De Clercq D., Understanding how an arm swing enhances performance in the vertical jump, J Biomech, 37, pp. 1929-1940, (2004); Lockie R.G., Murphy A.J., Knight T.J., Janse de Jonge, Factors that differentiate acceleration ability in field sport athletes, J Strength Cond Res, 25, pp. 2704-2714, (2011); Loturco I., Pereira L.A., Cal Abad C.C., D'Angelo R.A., Fernandes V., Kitamura K., Kobal R., Nakamura F.Y., Vertical and horizontal jump tests are strongly associated with competitive performance in 100-m dash events, J Strength Cond Res, 29, pp. 1966-1971, (2015); Meylan C.M., Nosaka K., Green J., Cronin J.B., Temporal and kinetic analysis of unilateral jumping in the vertical, horizontal, and lateral directions, J Sports Sci, 28, pp. 545-554, (2010); Morin J., Samozino P., Interpreting power-force-velocity profiles for individualized and specific training, Int J Sport Physiol Perform, 11, pp. 267-272, (2016); Morin J., Samozino P., Millet G.Y., Changes in running kinematics, kinetics, and spring-mass behavior over a 24-h run, Med Sci Sports Exerc, 43, pp. 829-836, (2011); Nicol C., Avela J., Komi P.V., The stretch-shortening cycle—A model to study naturally occurring neuromuscular fatigue, Sports Med, 36, pp. 977-999, (2006); Nuzzo J.L., McBride J.M., Cormie P., McCaulley G.O., Relationship between countermovement jump performance and multijoint isometric and dynamic tests of strength, J Strength Cond Res, 22, pp. 699-707, (2008); Ohberg L., Lorentzon R., Alfredson H., Eccentric training in patients with chronic achilles tendinosis: Normalised tendon structure and decreased thickness at follow up, Br J Sports Med, 38, pp. 8-11, (2004); Petersen J., Thorborg K., Nielsen M.B., Budtz-Jorgensen E., Holmich P., Preventive effect of eccentric training on acute hamstring injuries in men’s soccer: A cluster-randomized controlled trial, Am J Sports Med, 39, pp. 2296-2303, (2011); Ramirez-Campillo R., Alvarez C., Henriquez-Olguin C., Baez E.B., Martinez C., Andrade D.C., Izquierdo M., Effects of plyometric training on endurance and explosive strength performance in competitive middle- And long-distance runners, J Strength Cond Res, 28, pp. 97-104, (2014); Ramirez-Campillo R., Gallardo F., Henriquez-Olguin C., Meylan C.M.P., Martinez C., Alvarez C., Caniuqueo A., Cadore E.L., Izquierdo M., Effect of vertical, horizontal, and combined plyometric training on explosive, balance, and endurance performance of young soccer players, J Strength Cond Res, 29, pp. 1784-1795, (2015); Rodriguez-Rosell D., Mora-Custodio R., Franco-Marquez F., Yanez-Garcia J.M., Gonzalez-Badillo J.J., Traditional vs. Sport-specific vertical jump tests: Reliability, validity, and relationship with the legs strength and sprint performance in adult and teen soccer and basketball players, J Strength Cond Res, 31, pp. 196-206, (2017); Stone M.H., O'Bryant H.S., McCoy L., Coglianese R., Lehmkuhl M., Schilling B., Power and maximum strength relationships during performance of dynamic and static weighted jumps, J Strength Cond Res, 17, pp. 140-147, (2003); Yanci J., Los Arcos A., Mendiguchia J., Brughelli M., Relationships between sprinting, agility, one- And two-leg vertical and horizontal jump in soccer players, Kinesiology, 46, pp. 194-201, (2014); Young M.A., Cook J.L., Purdam C.R., Kiss Z.S., Alfredson H., Eccentric decline squat protocol offers superior results at 12 months compared with traditional eccentric protocol for patellar tendinopathy in volleyball players, Br J Sports Med, 39, pp. 102-105, (2005)","L.A. Barker; Department of Kinesiology and Nutrition Sciences, Biomechanics Laboratory, University of Nevada Las Vegas, Las Vegas, United States; email: Barkel1@unlv.nevada.edu","","NSCA National Strength and Conditioning Association","10648011","","","28746248","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-85047562673" "Myer G.D.; Ford K.R.; Khoury J.; Succop P.; Hewett T.E.","Myer, Gregory D. (6701852696); Ford, Kevin R. (7102539333); Khoury, Jane (35427121300); Succop, Paul (7005469665); Hewett, Timothy E. (7005201943)","6701852696; 7102539333; 35427121300; 7005469665; 7005201943","Development and validation of a clinic-based prediction tool to identify female athletes at high risk for anterior cruciate ligament injury","2010","American Journal of Sports Medicine","38","10","","2025","2033","8","158","10.1177/0363546510370933","https://www.scopus.com/inward/record.uri?eid=2-s2.0-77958196914&doi=10.1177%2f0363546510370933&partnerID=40&md5=c21577c7c9117159a5742ad0a2b7bbcd","Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States; Rocky Mountain University of Health Professions, Provo, UT, United States; Department of Pediatrics, College of Medicine, Australia; Department of Environmental Health, Division of Epidemiology and Biostatistics, United States; Departments of Orthopaedic Surgery, Biomedical Engineering, and Rehabilitation Sciences, University of Cincinnati, Cincinnati, OH, United States; Ohio State University, Columbus, OH, United States","Myer G.D., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Rocky Mountain University of Health Professions, Provo, UT, United States; Ford K.R., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Department of Pediatrics, College of Medicine, Australia; Khoury J., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Succop P., Department of Environmental Health, Division of Epidemiology and Biostatistics, United States; Hewett T.E., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Department of Environmental Health, Division of Epidemiology and Biostatistics, United States, Departments of Orthopaedic Surgery, Biomedical Engineering, and Rehabilitation Sciences, University of Cincinnati, Cincinnati, OH, United States, Ohio State University, Columbus, OH, United States","Background: Prospective measures of high knee abduction moment (KAM) during landing identify female athletes at high risk for anterior cruciate ligament injury. Laboratory-based measurements demonstrate 90% accuracy in prediction of high KAM. Clinic-based prediction algorithms that employ correlates derived from laboratory-based measurements also demonstrate high accuracy for prediction of high KAM mechanics during landing. Hypotheses: Clinic-based measures derived from highly predictive laboratory-based models are valid for the accurate prediction of high KAM status, and simultaneous measurements using laboratory-based and clinic-based techniques highly correlate. Study Design: Cohort study (diagnosis); Level of evidence, 2. Methods: One hundred female athletes (basketball, soccer, volleyball players) were tested using laboratory-based measures to confirm the validity of identified laboratory-based correlate variables to clinic-based measures included in a prediction algorithm to determine high KAM status. To analyze selected clinic-based surrogate predictors, another cohort of 20 female athletes was simultaneously tested with both clinic-based and laboratory-based measures. Results: The prediction model (odds ratio: 95% confidence interval), derived from laboratory-based surrogates including (1) knee valgus motion (1.59: 1.17-2.16 cm), (2) knee flexion range of motion (0.94: 0.89°-1.00°), (3) body mass (0.98: 0.94-1.03 kg), (4) tibia length (1.55: 1.20-2.07 cm), and (5) quadriceps-to-hamstrings ratio (1.70: 0.48%-6.0%), predicted high KAM status with 84% sensitivity and 67% specificity (P <.001). Clinic-based techniques that used a calibrated physician's scale, a standard measuring tape, standard camcorder, ImageJ software, and an isokinetic dynamometer showed high correlation (knee valgus motion, r =.87; knee flexion range of motion, r =.95; and tibia length, r =.98) to simultaneous laboratory-based measurements. Body mass and quadriceps-to-hamstrings ratio were included in both methodologies and therefore had r values of 1.0. Conclusion: Clinically obtainable measures of increased knee valgus, knee flexion range of motion, body mass, tibia length, and quadriceps-to-hamstrings ratio predict high KAM status in female athletes with high sensitivity and specificity. Female athletes who demonstrate high KAM landing mechanics are at increased risk for anterior cruciate ligament injury and are more likely to benefit from neuromuscular training targeted to this risk factor. Use of the developed clinic-based assessment tool may facilitate high-risk athletes' entry into appropriate interventions that will have greater potential to reduce their injury risk. © The Author(s), 2010.","ACL injury prevention; ACL injury risk factors; assessment tools; clinician-friendly; high-risk biomechanics; targeted neuromuscular training","Adolescent; Anterior Cruciate Ligament; Athletic Injuries; Biomechanics; Child; Cohort Studies; Female; Humans; Joint Instability; Knee Injuries; Knee Joint; Movement; Predictive Value of Tests; Range of Motion, Articular; Risk Factors; adolescent; anterior cruciate ligament; article; biomechanics; child; cohort analysis; female; human; injury; joint characteristics and functions; joint instability; knee; knee injury; movement (physiology); pathology; pathophysiology; physiology; predictive value; risk factor; sport injury; validation study","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A 13-year review, Am J Sports Med, 33, 4, pp. 524-530, (2005); Andriacchi T.P., Natarajan R.N., Hurwitz D.E., Musculoskeletal dynamics, locomotion, and clinical applications, Basic Orthopaedic Biomechanics, pp. 37-68, (1997); Bisseling R.W., Hof A.L., Handling of impact forces in inverse dynamics, J Biomech, 39, 13, pp. 2438-2444, (2006); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am J Sports Med, 30, 2, pp. 261-267, (2002); Cole G.K., Nigg B.M., Ronsky J.L., Yeadon M.R., Application of the joint coordinate system to three-dimensional joint attitude and movement representation: A standardization proposal, J Biomech Eng, 115, 4 A, pp. 344-349, (1993); Ford K.R., Myer G.D., Hewett T.E., Reliability of landing 3D motion analysis: Implications for longitudinal analyses, Med Sci Sports Exerc, 39, 11, pp. 2021-2028, (2007); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, 10, pp. 1745-1750, (2003); Ford K.R., Myer G.D., Smith R.L., Vianello R.M., Seiwert S.L., Hewett T.E., A comparison of dynamic coronal plane excursion between matched male and female athletes when performing single leg landings, Clin Biomech, 21, 1, pp. 33-40, (2006); Gilchrist J., Mandelbaum B.R., Melancon H., A randomized controlled trial to prevent noncontact anterior cruciate ligament injury in female collegiate soccer players, Am J Sports Med, 36, 8, pp. 1476-1483, (2008); Grindstaff T.L., Hammill R.R., Tuzson A.E., Hertel J., Neuromuscular control training programs and noncontact anterior cruciate ligament injury rates in female athletes: A numbers-needed-to-treat analysis, J Athl Train, 41, 4, pp. 450-456, (2006); Hewett T.E., Ford K.R., Myer G.D., Anterior cruciate ligament injuries in female athletes: Part 2, a meta-analysis of neuromuscular interventions aimed at injury prevention, Am J Sports Med, 34, 3, pp. 490-498, (2006); Hewett T.E., Ford K.R., Myer G.D., Wanstrath K., Scheper M., Gender differences in hip adduction motion and torque during a single leg agility maneuver, J Orthop Res, 24, 3, pp. 416-421, (2006); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes: A prospective study, Am J Sports Med, 27, 6, pp. 699-706, (1999); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J Bone Joint Surg Am, 86, 8, pp. 1601-1608, (2004); Hewett T.E., Myer G.D., Ford K.R., Reducing knee and anterior cruciate ligament injuries among female athletes: A systematic review of neuromuscular training interventions, J Knee Surg, 18, 1, pp. 82-88, (2005); Hewett T.E., Myer G.D., Ford K.R., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes: Decreased impact forces and increased hamstring torques, Am J Sports Med, 24, 6, pp. 765-773, (1996); Kernozek T.W., Torry M.R., Van Hoof H., Cowley H., Tanner S., Gender differences in frontal and sagittal plane biomechanics during drop landings, Med Sci Sports Exerc, 37, 6, pp. 1003-1013, (2005); Krosshaug T., Nakamae A., Boden B.P., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, Am J Sports Med, 35, 3, pp. 359-367, (2007); Lephart S.M., Abt J.P., Ferris C.M., Neuromuscular and biomechanical characteristic changes in high school athletes: A plyometric versus basic resistance program, Br J Sports Med, 39, 12, pp. 932-938, (2005); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech, 16, 5, pp. 438-445, (2001); Mandelbaum B.R., Silvers H.J., Watanabe D., Effectiveness of a neuromuscular and proprioceptive training program in preventing the incidence of ACL injuries in female athletes: Two-year follow up, Am J Sport Med, 33, 6, pp. 1003-1010, (2005); McLean S.G., Huang X., Su A., Van Den Bogert A.J., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clin Biomech, 19, pp. 828-838, (2004); Myer G.D., Brent J.L., Ford K.R., Hewett T.E., A pilot study to determine the effect of trunk and hip focused neuromuscular training on hip and knee isokinetic strength, Br J Sports Med, 42, 7, pp. 614-619, (2008); Myer G.D., Ford K.R., Barber Foss K.D., Liu C., Nick T.G., Hewett T.E., The relationship of hamstrings and quadriceps strength to anterior cruciate ligament injury in female athletes, Clin J Sport Med, 19, 1, pp. 3-8, (2009); Myer G.D., Ford K.R., Brent J.L., Hewett T.E., The effects of plyometric versus dynamic balance training on landing force and center of pressure stabilization in female athletes, Br J Sports Med, 39, 6, (2005); Myer G.D., Ford K.R., Brent J.L., Hewett T.E., The effects of plyometric versus dynamic balance training on power, balance and landing force in female athletes, J Strength Cond Res, 20, 2, pp. 345-353, (2006); Myer G.D., Ford K.R., Brent J.L., Hewett T.E., Differential neuromuscular training effects on ACL injury risk factors in ""high-risk"" versus ""low-risk"" athletes, BMC Musculoskelet Disord, 8, (2007); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Biomechanics laboratory-based prediction algorithm to identify female athletes with high knee loads that increase risk of ACL injury, Br J Sports Med, (2010); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Clinical correlates to laboratory measures for use in non-contact anterior cruciate ligament injury risk prediction algorithm [published online ahead of print June 4, 2010], Clin Biomech; Myer G.D., Ford K.R., McLean S.G., Hewett T.E., The effects of plyometric versus dynamic stabilization and balance training on lower extremity biomechanics, Am J Sports Med, 34, 3, pp. 445-455, (2006); Myer G.D., Ford K.R., Palumbo J.P., Hewett T.E., Neuromuscular training improves performance and lower-extremity biomechanics in female athletes, J Strength Cond Res, 19, 1, pp. 51-60, (2005); Myklebust G., Engebretsen L., Braekken I.H., Skjolberg A., Olsen O.E., Bahr R., Prevention of anterior cruciate ligament injuries in female team handball players: A prospective intervention study over three seasons, Clin J Sport Med, 13, 2, pp. 71-78, (2003); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med, 32, 4, pp. 1002-1012, (2004); Pappas E., Hagins M., Sheikhzadeh A., Nordin M., Rose D., Biomechanical differences between unilateral and bilateral landings from a jump: Gender differences, Clin J Sport Med, 17, 4, pp. 263-268, (2007); Paterno M.V., Myer G.D., Ford K.R., Hewett T.E., Neuromuscular training improves single-limb stability in young female athletes, J Orthop Sports Phys Ther, 34, 6, pp. 305-317, (2004); Pollard C.D., Sigward S.M., Ota S., Langford K., Powers C.M., The influence of in-season injury prevention training on lower-extremity kinematics during landing in female soccer players, Clin J Sport Med, 16, 3, pp. 223-227, (2006); Uhorchak J.M., Scoville C.R., Williams G.N., Arciero R.A., St Pierre P., Taylor D.C., Risk factors associated with noncontact injury of the anterior cruciate ligament: A prospective four-year evaluation of 859 West Point cadets, Am J Sports Med, 31, 6, pp. 831-842, (2003); Winter D.A., Biomechanics and Motor Control of Human Movement, pp. 91-95, (1990); Zeller B.L., McCrory J.L., Kibler W.B., Uhl T.L., Differences in kinematics and electromyographic activity between men and women during the single-legged squat, Am J Sports Med, 31, 3, pp. 449-456, (2003)","G. D. Myer; Cincinnati Children's Hospital, MLC 10001, Cincinnati, OH 45229, 3333 Burnet Avenue, United States; email: greg.myer@chmcc.org","","","15523365","","AJSMD","20595554","English","Am. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-77958196914" "Clarys J.P.; Cabri J.","Clarys, Jan Pieter (7003268975); Cabri, Jan (6603850682)","7003268975; 6603850682","Electromyography and the study of sports movements: A review","1993","Journal of Sports Sciences","11","5","","379","448","69","131","10.1080/02640419308730010","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0027482139&doi=10.1080%2f02640419308730010&partnerID=40&md5=f2ab3852ae005f8837a32b4ee666738c","Department of Experimental Anatomy, Vrije Universiteit Brussel, Brussels, B-1090, Laarbeeklaan 103, Belgium","Clarys J.P., Department of Experimental Anatomy, Vrije Universiteit Brussel, Brussels, B-1090, Laarbeeklaan 103, Belgium; Cabri J., Department of Experimental Anatomy, Vrije Universiteit Brussel, Brussels, B-1090, Laarbeeklaan 103, Belgium","Within electromyography (EMG), a particular speciality has been developed wherein the aim is to use EMG for the study of muscular function and co-ordination. This area of research is usually called kinesiological EMG. The general aims of kinesiological EMG are to analyse the function and co-ordination of muscles in different movements and postures, in healthy subjects as well as in the disabled, in skilled actions as well as during training, in humans as well as in animals, under laboratory conditions as well as during daily or vocational activities. This is often done by a combination of electromyographical and kinesiological or biomechanical measurement techniques. Because there are over 400 skeletal muscles in the human body and both irregular and complex involvement of the muscles may occur in neuromuscular diseases and in voluntary occupational or sports movements, it is impossible to sample all of the muscles of the entire body during the performance of complex motor skills. In addition, the measurement of kinesiological EMG in sport and specific field circumstances, such as the track and/or soccer field, the alpine ski slope, the swimming pool and the ice rink, demands a specific technological and methodological approach, adaptable to both the field and the sport circumstances. Sport movement techniques and skills, training approaches and methods, ergonomic verification of the human-machine interaction have, amongst others, a highly specialized muscular activity in common. The knowledge of such muscular action in all its aspects, its evaluation and its feedback should allow for the optimization of movement, of sports materials, of training possibilities and, in the end, of sports performance. Drawing conclusions from a review of the EMG research of 32 sports, covering over 100 different complex skills, including methodological approaches, is an impossible task. We have attempted to set standards concerning the EMG methodology at the beginning of this review. Electromyography and sports is a vast area and a complete review is impossible, as information will be found scattered in many different journals, including those on the sports sciences, ergonomics, biomechanics, applied physiology, in different congress proceedings, and so on. Consequently, many important aspects and possibly important publications may have been omitted from this review. © 1993, E. & F.N. Spon.","Anatomy; Biomechanics; Electromyography; Ergonomics; Kinesiology; Sports","Electromyography; Human; Movement; Muscle Contraction; Muscles; Signal Processing, Computer-Assisted; Sports; body movement; body posture; disabled person; electromyography; ergonomics; human; kinesiology; methodology; motor performance; muscle contraction; muscle function; neuromuscular disease; review; skeletal muscle; sport; technique; technology","Abernethy B., Neal R.J., Moran M.J., Parker A.W., Expert-novice differences in muscle activity during the golf swing, Science and Golf, pp. 54-60, (1990); Absaljamov T.M., Bashanow W.W., Danilotschking W.A., Melkonow A.A., Krafttrainingsapparate in Der Vorbereitung Von Spitzenschwimmern, 19, pp. 92-98, (1979); Adelsberg S., The tennis stroke: An EMG analysis of selected muscles with rackets of increasing grip size, American Journal of Sports Medicine, 14, pp. 139-142, (1986); Agnevik G., Saltin B., Utförsakning (Downhill skiing), Idrottsfysiologi, 2, Stockholm: Trygg-Hansa, (1978); Anderson J.P., An Electromyographic Study of Ballistic Movements in the Tennis Forehand, (1970); Anderson M., Comparison of muscle patterning in the overarm throw and tennis serve, Research Quarterly, 4, pp. 541-553, (1979); Andrews J.G., The functional role of the hamstrings and quadriceps during cycling: Lombard’s paradox revisited, Journal of Biomechanics, 20, pp. 565-576, (1987); Angel R.W., Electromyography during voluntary movement: The two burst pattern, Electroencephalography and Clinical Neurophsiology, 36, pp. 493-498, (1974); Antonis J., Clarys J.P., Cabri J., Clysen L., Welbergen E., EMG of Uphill Racing: A New Qualitative Approach of Cyclic Movements, (1989); Asang E., Biomechanics of the human leg in alpine skiing, Biomechanics IV, pp. 236-242, (1974); Aura O., Viitasalo J.T., An effective flop-style high jump take-off: A comparative study of two jumpers, Biomechanics XI-B, pp. 570-574, (1988); Barclay J.K., McLlroy W.E., Effect of skill level on muscle activity in neck and forearm muscles during the golf swing, Science and Golf, pp. 49-53, (1990); Barcroft H., Swan H.J.C., Sympathetic control of human blood vessels, Monographs of the Physiological Society, pp. 112-117, (1953); Barthels K.M., Adrian M.J., Variability in the dolphin kick under four conditions, Proceedings of the 1St International Symposium on Biomechanics in Swimming, pp. 105-118, (1971); Bartlett R.M., Biomechanical Assessment of the Elite Athlete, (1989); Bartlett R.M., Best R.J., The biomechanics of javelin throwing: A review, Journal of Sports Sciences, 6, pp. 1-38, (1988); Basmajian B.V., Muscles Alive: Their Functions Revealed by Electromyography, (1962); Basmajian J.V., Electrodes and electrode connectors, Developments in Electromyography and Clinical Neurophysiology, pp. 502-510, (1973); Basmajian J.V., Muscles Alive: Their Functions Revealed by Electromyography, (1978); Basmajian J.V., De Luca C.J., Muscles Alive: Their Functions Revealed by Electromyography, (1985); Basmajian J.V., Clifford H.C., McLeod W.D., Nun-Nally H.N., Computers in Electromyography, (1975); Baumann W., Kinematic and dynamic characteristics of the sprint start, Biomechanics V-B, pp. 194-199, (1976); Beikert E., Balle W., Fritz M., Comparison between the slide skiff and the sliding rigger skiff: Electromyographic and biomechanical measurements in the field, Biomechanics IX-B, pp. 472-476, (1985); Beillot J., Rochongar P., Briend M.G., Le Bars R., Tennis. 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Monteil K.M., Rouard A.H., Influence of lactate accumulation on kinematic and electromyographic parameters in front crawl, Vlth International Symposium on Biomechanics and Medicine in Swimming, (1992); Monteil K.M., Rouard A.H., Influence of the size of the paddles in front crawl stroke, Biomechanics and Medicine in Swimming VI, pp. 99-104, (1992); Morrenhof J.W., Abbink H.J., Cross-correlation and cross-talk in surface EMG, Electromyography and Clinical Neurophysiology, 25, pp. 73-79, (1985); Mostardi R.A., Noe D.A., Jackson M.L., Askew M.J., Electromyographic activity sequencing of selected muscles involved in an isokinetic deadlift, Electromyogra-Phical Kinesiology, pp. 355-358, (1991); Muller E., Auswerte und Anwenungsmoglichkeiten der Elektromyographie mit Oberflachenelektroden bei sportwissenschaftlichen Aufgabenstellungen, LU-LE, 9, pp. 231-237, (1982); Nemessuri M., Bretz K., Csizmadia F., EMG study of the cross-hang position, Biomechanics VII-B, pp. 55-58, (1981); Neukomm P.A., Nigg B., A telemetry system for the measurement, transmission, and registration of biomechanical and physiological data, applied to skiing, Biomechanics IV, pp. 231-235, (1974); Nilsson J., Thorstensson A., Halbertsma J., Changes in leg movements and muscle activity with speed of locomotion and mode of progression in humans, Acta Physiologica Scandinavica, 123, pp. 457-475, (1985); Nordeen K.S., Cavanagh P.R., Simulation of lower limb kinematics cycling, Biomechanics V-B, pp. 26-33, (1976); Norman R.W., Winter D.A., Electromyographic Data Logging and Analysis System, (1982); Norman R.W., Winter D.A., Bobet J., WATEMG: An Electromyogram Signal Processing Package, (1985); Notermans S., Klinische Electromyografie (Clinical Electromyography), (1981); Nuber W., Jobe W., Perry J., Moynes R., Antonelli D., Fine wire electromyography analysis of muscles of the shoulder during swimming, American Journal of Sports Medicine, 14, pp. 63-65, (1986); O'Connell A.L., Gardner E.B., The use of electromyography in kinesiological research, Research Quarterly, 34, pp. 166-184, (1963)","","","","02640414","","","8301704","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-0027482139" "Tol J.L.; Hamilton B.; Eirale C.; Muxart P.; Jacobsen P.; Whiteley R.","Tol, Johannes L. (6701836850); Hamilton, Bruce (55655478300); Eirale, Cristiano (35742752100); Muxart, Patrice (56020505600); Jacobsen, Philipp (56018488000); Whiteley, Rod (16044158000)","6701836850; 55655478300; 35742752100; 56020505600; 56018488000; 16044158000","At return to play following hamstring injury the majority of professional football players have residual isokinetic deficits","2014","British journal of sports medicine","48","18","","1364","1369","5","101","10.1136/bjsports-2013-093016","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85027930863&doi=10.1136%2fbjsports-2013-093016&partnerID=40&md5=855c746d86cab90497296572556deac7","Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar","Tol J.L., Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; Hamilton B., Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; Eirale C., Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; Muxart P., Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; Jacobsen P., Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; Whiteley R., Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar","BACKGROUND: There is an ongoing debate regarding the optimal criteria for return to sport after an acute hamstring injury. Less than 10% isokinetic strength deficit is generally recommended but this has never been documented in professional football players after rehabilitation. Our aim was to evaluate isokinetic measurements in MRI-positive hamstring injuries.; METHODS: Isokinetic measurements of professional football players were obtained after completing a standardised rehabilitation programme. An isokinetic strength deficit of more than 10% compared with the contralateral site was considered abnormal. Reinjuries within 2 months were recorded.; RESULTS: 52 players had a complete set of isokinetic testing before clinical discharge. There were 27 (52%) grade 1 and 25 (48%) grade 2 injuries. 35 of 52 players (67%) had at least one of the three hamstring-related isokinetic parameters that display a deficit of more than 10%. The percentage of players with 10% deficit for hamstring concentric 60°/s, 300°/s and hamstring eccentric was respectively 39%, 29% and 28%. There was no significant difference of mean isokinetic peak torques and 10% isokinetic deficits in players without reinjury (N=46) compared with players with reinjury (N=6).; CONCLUSIONS: When compared with the uninjured leg, 67% of the clinically recovered hamstring injuries showed at least one hamstring isokinetic testing deficit of more than 10%. Normalisation of isokinetic strength seems not to be a necessary result of the successful completion of a football-specific rehabilitation programme. The possible association between isokinetic strength deficit and increased reinjury risk remains unknown. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.","Hamstring injuries; Isokinetics; Soccer","Adolescent; Adult; Biomechanical Phenomena; Double-Blind Method; Humans; Magnetic Resonance Imaging; Male; Muscle Strength; Muscle, Skeletal; Physical Therapy Modalities; Recovery of Function; Soccer; Tendon Injuries; Torque; Young Adult; adolescent; adult; biomechanics; clinical trial; controlled study; convalescence; double blind procedure; human; injuries; male; multicenter study; muscle strength; nuclear magnetic resonance imaging; pathophysiology; physiology; physiotherapy; randomized controlled trial; skeletal muscle; soccer; Tendon Injuries; torque; young adult","","","","","14730480","","","24493666","English","Br J Sports Med","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85027930863" "Wong P.-L.; Chamari K.; De W.M.; Wisløff U.; Hong Y.","Wong, Pui-Lam (35115670400); Chamari, Karim (6602474344); De, Wei Mao (15922069900); Wisløff, Ulrik (57204822365); Hong, Youlian (7403392792)","35115670400; 6602474344; 15922069900; 57204822365; 7403392792","Higher plantar pressure on the medial side in four soccer-related movements","2007","British Journal of Sports Medicine","41","2","","93","100","7","72","10.1136/bjsm.2006.030668","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33847137659&doi=10.1136%2fbjsm.2006.030668&partnerID=40&md5=e646391f64611953637c07e695c94100","Department of Sports Science and Physical Education, Chinese University of Hong Kong, Hong Kong, Hong Kong; Unité de Recherche - Evaluation, Sport, Santé, National Centre of Medicine and Science in Sports (CNMSS), El Menzah, Tunisia; Shandong Institute of Physical Education and Sports, Jinan, Shandong, China; Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway","Wong P.-L., Department of Sports Science and Physical Education, Chinese University of Hong Kong, Hong Kong, Hong Kong; Chamari K., Unité de Recherche - Evaluation, Sport, Santé, National Centre of Medicine and Science in Sports (CNMSS), El Menzah, Tunisia; De W.M., Shandong Institute of Physical Education and Sports, Jinan, Shandong, China; Wisløff U., Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway; Hong Y., Department of Sports Science and Physical Education, Chinese University of Hong Kong, Hong Kong, Hong Kong","Objective: To measure the plantar pressure in four soccer-related movements in 15 male soccer players (mean (SD) age 20.9 (1.3) years, height 173 (4) cm, weight 61.7 (3.6) kg). Design : To record plantar pressure distribution, the players wore soccer boots with 12 circular studs and with an insole pressure recorder device equipped with 99 sensors. Plantar pressure was recorded in five successful trials in each of the four soccer-related movements: running, sideward cutting, 45° cutting and landing from a vertical jump. Each footprint was divided into 10 recorded areas for analysis. Results : Compared with running at 3.3 m/s, maximal speed sideward cutting and 45° cutting induced higher peak pressure (p<0.05) under the second toe, medial forefoot, medial arch and medial heel. The peak pressure of the maximal jump landing was lower under the medial forefoot and lateral forefoot as compared with running (p<0.05). The pressure-time integral showed that sideward cutting and 45° cutting induced higher pressures (p<0.05) than running for all recorded areas, except for the lateral forefoot and the lateral arch. In all the four soccer-related movements, a higher pressure was found on the medial side of the plantar surface as compared with the lateral side. Conclusions : These data suggest that the medial side of the plantar surface may be more prone to injuries, and that foot orthosis adoption, improved soccer boot design and specific muscle training could be considered to reduce pressure and the subsequent risk of injury.","","Adult; Analysis of Variance; Biomechanics; Foot; Foot Injuries; Humans; Male; Pressure; Shoes; Soccer; Sports Equipment; adult; article; athlete; body height; body movement; body weight; controlled study; human; human experiment; jumping; leg movement; male; plantaris muscle; running; velocity","Football Worldwide 2000: Official FIFA survey. FIFA, 2002; Soccer injury rates continue five-year climb, The NCAA News, (1993); Yde J., Nielsen A.B., Sports injuries in adolescents' ball games: Soccer, handball and basketball, Br J Sports Med, 24, pp. 51-54, (1990); Weightman D.L., Browne R.C., Injuries in eleven selected sports, J Sports Med, 9, pp. 136-141, (1975); Wong P., Hong Y., Soccer injury in the lower extremities, Br J Sports Med, 39, pp. 473-482, (2005); Hockenbury R.T., Forefoot problems in athletes, Med Sci Sports Exerc, 31, SUPPL. 7, pp. 448-458, (1999); Omey M., Micheli L., Foot and ankle problems in the young athlete, Med Sci Sports Exerc, 31, SUPPL. 7, pp. 470-486, (1999); Knapp T., Mandelbaum B., Garrett W., Why are stress injuries so common in the soccer player?, Clin Sports Med, 17, pp. 835-853, (1998); Hawkins R.D., Fuller C.W., A prospective epidemiological study of injuries in four English professional football clubs, Br J Sports Med, 33, pp. 196-203, (1999); Hawkins R.D., Hulse M.A., Wilkinson C., Et al., The association football medical research programme: An audit of injuries in professional football, Br J Sports Med, 35, pp. 43-47, (2001); Ekstrand J., Gillquist J., The avoidability of soccer injuries, Int J Sports Med, 4, pp. 124-128, (1983); Chen H., Nigg B.M., de Koning J., Relationship between plantar pressure distribution under the foot and insole comfort, Clin Biomech, 9, pp. 335-341, (1994); Milani T.L., Hennig E.M., Lafortune M.A., Perceptual and biomechanical variables for running in identical shoe constructions with varying midsole hardness, Clin Biomech, 12, pp. 294-300, (1997); Hennig E.M., Valiant G.A., Liu Q., Biomechanical variables and the perception of cushioning for running in various types of footwear, J Appl Biomech, 12, pp. 143-150, (1996); Milani T.L., Schnabel G., Hennig E.M., Rearfoot motion and pressure distribution patterns during running in shoes with varus and valgus wedges, J Appl Biomech, 11, pp. 177-187, (1995); Hennig E.M., Milani T.L., In-shoe pressure distribution for running in various types of footwear, Int J Sports Biomech, 11, pp. 299-310, (1995); Eils E., Streyl M., Linnenbecker S., Et al., Characteristic plantar pressure distribution patterns during soccer-specific movements, Am J Sports Med, 32, pp. 140-145, (2004); Mueller M.J., Application of plantar pressure assessment in footwear and insert design, J Orthop Sports Phys Ther, 29, pp. 747-755, (1999); Cavanagh P.R., Ulbrecht J.S., Caputo G.M., New developments in the biomechanics of the diabetic foot, Diabetes Metab Res Rev, 16, SUPPL. 1, pp. 6-10, (2000); Shaw J.E., Boulton A.J.M., Pressure time integrals may be more important than peak pressures in diabetic foot ulceration, Diabet Med, 13, SUPPL. 7, (1996); Stess R.M., Jensen S.R., Mirmiran R., The role of dynamic plantar pressures in diabetic foot ulcers, Diabetes Care, 20, pp. 855-858, (1997); Hodge M.C., Bach T.M., Carter G.M., Orthotic management of plantar pressure and pain in rheumatoid arthritis, Clin Biomech, 14, pp. 567-575, (1999); Lees A., Kewley P., The demands on the soccer boot, Science and football II, pp. 335-340, (1993); Yamanaka K., Nishikawa T., Yamanaka T., Et al., An analysis of the playing patterns of the Japan national team in the 1998 World Cup for soccer, Science and football IV, pp. 101-105, (2002); Reilly T., Thomas V., A motion analysis of work-rate in different positional roles in professional football match-play, J Hum Mov Stud, 2, pp. 87-97, (1976); Withers R.T., Maricic Z., Wasilewski S., Et al., Match analyses of Australian professional soccer players, J Hum Mov Stud, 8, pp. 159-176, (1982); Orchard J.W., Intrinsic and extrinsic risk factors for muscle strains in Australian football, Am J Sports Med, 29, pp. 300-303, (2001); Hsi W.L., Chai H.M., Lai J.S., Comparison of pressure and time parameters in evaluating diabetic footwear, Am J Pnys Med Rehabil, 81, pp. 822-829, (2002); Bland J.M., Altman D.G., Multiple significance tests: The Bonferroni method, BMJ, 310, (1995); Stolen T., Chamari K., Castagna C., Et al., Physiology of soccer: An update, Sports Med, 35, pp. 501-536, (2005); Cavanagh P.R., The running shoe book, (1980); Waddington G., Adams R., Football boot insoles and sensitivity to extent of ankle inversion movement, Br J Sports Med, 37, pp. 170-174, (2003); Soames R.W., Foot pressure patterns during gait, J Biomed Eng, 7, pp. 120-126, (1985); Nunome H., Ikegami Y., Kozakai R., Et al., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, J Sport Sci, 24, pp. 529-541, (2006); Rahnama N., Lees A., Bambaecichi E., A comparison of muscle strength and flexibility between the preferred and non-preferred leg in English soccer players, Ergonomics, 48, pp. 1568-1575, (2005); Dorge H.C., Anderson T.B., Sorensen H., Et al., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, J Sport Sci, 20, pp. 293-299, (2002); Kearns C.F., Isokawa M., Abe T., Architectural characteristics of dominant leg muscles in junior soccer players, Eur J Appl Physiol, 85, pp. 240-243, (2001)","P.-L. Wong; Department of Sports Science and Physical Education, Chinese University of Hong Kong, Hong Kong, Hong Kong; email: delwong@alumni.cuhk.net","","","03063674","","BJSMD","17178776","English","Br. J. Sports Med.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-33847137659" "Sigward S.M.; Powers C.M.","Sigward, Susan M. (9735729200); Powers, Christopher M. (7103284208)","9735729200; 7103284208","The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting","2006","Clinical Biomechanics","21","1","","41","48","7","201","10.1016/j.clinbiomech.2005.08.001","https://www.scopus.com/inward/record.uri?eid=2-s2.0-28444466257&doi=10.1016%2fj.clinbiomech.2005.08.001&partnerID=40&md5=f1683a116c803c0353dcaf1f1f8cde9b","Musculoskeletal Biomechanics Research Laboratory, Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 90089, 1540 East Alcazar Street, United States","Sigward S.M., Musculoskeletal Biomechanics Research Laboratory, Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 90089, 1540 East Alcazar Street, United States; Powers C.M., Musculoskeletal Biomechanics Research Laboratory, Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 90089, 1540 East Alcazar Street, United States","Background. It has been suggested that gender differences in the performance of athletic maneuvers is a contributory factor with respect to the disproportionate incidence of non-contact anterior cruciate ligament injury in female athletes. The purpose of this study was to evaluate gender differences in knee joint kinematics, kinetics and muscle activation during a side-step cutting. Methods. Three-dimensional kinematics, ground reaction forces (2400 Hz) and electromyographic activity (surface electrodes) were recorded during the early deceleration phase of side-step cutting in 30 healthy collegiate soccer players (15 male, 15 female). Gender differences in knee joint kinematics, peak moments, net joint moment impulse and average muscle EMG intensity were evaluated with one-tailed t-tests. Findings. No differences in kinematics were found. However, when compared to males, females demonstrated a smaller peak knee flexor moment (1.4 (0.8) vs. 2.1 (0.8) N m/kg, P = 0.05) and a greater knee adductor moment (0.43 (0.5) vs. 0.01 (0.3) N m/kg, P < 0.01) during early deceleration. In addition, females displayed greater average quadriceps EMG intensity than males (191% vs. 151% maximum voluntary isometric contraction, P = 0.02). Interpretation. In general, females experienced increased frontal plane moments and decreased sagittal plane moments during early deceleration. These differences are suggestive of an ""at risk"" pattern in that frontal plane support of the knee is afforded primarily by passive structures (including the anterior cruciate ligament). Furthermore, increased quadriceps activity and smaller net flexor moments may suggest less sagittal plane protection (i.e., increased tendency towards anterior tibial translation). © 2005 Elsevier Ltd. All rights reserved.","ACL; Gender difference; Knee","Biomechanics; Electromyography; Exertion; Female; Humans; Kinetics; Knee Joint; Locomotion; Male; Muscle Contraction; Muscle, Skeletal; Range of Motion, Articular; Sex Factors; Soccer; Kinematics; Muscle; Risk assessment; adult; article; biomechanics; controlled study; electrode; electromyography; female; force; ground reaction force; human; kinematics; knee function; male; muscle contraction; muscle isometric contraction; normal human; priority journal; quadriceps femoris muscle; sex difference; three dimensional imaging; velocity; voluntary movement; Joint kinematics; Joint moments; Peak moments; Biomechanics","Arendt E., Agel J., Dick R., Anterior cruciate ligament injury patterns among collegiate men and women, J. Athletic Train., 34, pp. 86-92, (1999); Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. NCAA data and review of literature, Am. J. Sports Med., 23, pp. 694-701, (1995); Bendjaballah M.Z., Shirazi-Adl A., Zukor D.J., Finite element analysis of human knee joint in varus-valgus, Clin. Biomech., 12, pp. 139-148, (1997); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am. J. Sports Med., 30, pp. 261-267, (2002); Cowling E.J., Steele J.R., Is lower limb muscle synchrony during landing affected by gender? Implications for variations in ACL injury rates, J. Electromyogr. Kinesiol., 11, pp. 263-268, (2001); Cram J., Kasman G., Holtz J., Introduction to Surface Electromyography, (1998); Decker M.J., Torry M.R., Noonan T.J., Riviere A., Sterett W.I., Landing adaptations after ACL reconstruction, Med. Sci. Sports Exercise, 34, pp. 1408-1413, (2002); Demorat G., Weinhold P., Blackman T., Chudik S., Garrett W., Aggressive quadriceps loading can induce noncontact anterior cruciate ligament injury, Am. J. Sports Med., 32, pp. 477-483, (2004); Durselen L., Claes L., Kiefer H., The influence of muscle forces and external loads on cruciate ligament strain, Am. J. Sports Med., 23, pp. 129-136, (1995); Fleming B.C., Renstrom P.A., Ohlen G., Johnson R.J., Peura G.D., Beynnon B.D., Badger G.J., The gastrocnemius muscle is an antagonist of the anterior cruciate ligament, J. Orthop. Res., 19, pp. 1178-1184, (2001); Kadaba M.P., Ramakrishnan H.K., Wootten M.E., Gainey J., Gorton G., Cochran G.V., Repeatability of kinematic, kinetic, and electromyographic data in normal adult gait, J. Orthop. Res., 7, pp. 849-860, (1989); Kirkendall D., Garrett W., The anterior cruciate ligament enigma, Clin. Orthop., pp. 64-68, (2000); Lephart S.M., Ferris C.M., Riemann B.L., Myers J.B., Fu F.H., Gender differences in strength and lower extremity kinematics during landing, Clin. Sports Med., pp. 162-169, (2002); Lloyd D.G., Buchanan T.S., A model of load sharing between muscles and soft tissues at the human knee during static tasks, J. Biomech. Eng.-Trans. ASME, 118, pp. 367-376, (1996); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin. Biomech., 16, pp. 438-445, (2001); Malone T.R., Hardaker W.T., Garrett W.E., Feagin J.A., Bassett F.H., Relationship of gender to ACL injuries in intercollegiate basketball players, J Southern Orthop. Assoc., 2, pp. 694-701, (1993); Markolf K.L., Gorek J.F., Kabo J.M., Shapiro M.S., Direct measurement of resultant forces in the anterior cruciate ligament. An in vitro study performed with a new experimental technique, J. Bone Joint Surg. Am., 72, pp. 557-567, (1990); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J. Orthop. Res., 13, pp. 930-935, (1995); McLean S.G., Huang X.M., Su A., Van Den Bogert A.J., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clin. Biomech., 19, pp. 828-838, (2004); McLean S.G., Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: Potential for injury in women, Med. Sci. Sports Exercise, 31, pp. 959-968, (1999); McNair P.J., Marshall R.N., Matheson J.A., Important features associated with acute anterior cruciate ligament injury, New Zealand Med. J., 103, pp. 537-539, (1990); Pollard C.D., Davis I.M., Hamill J., Influence of gender on hip and knee mechanics during a randomly cued cutting maneuver, Clin. Biomech., 19, pp. 1022-1031, (2004); Renstrom P., Arms S.W., Stanwyck T.S., Johnson R.J., Pope M.H., Strain within the anterior cruciate ligament during hamstring and quadriceps activity, Am. J. Sports Med., 14, pp. 83-87, (1986); Torzilli P.A., Deng X., Warren R.F., The effect of joint-compressive load and quadriceps muscle force on knee motion in the intact and anterior cruciate ligament-sectioned knee, Am. J. Sports Med., 22, pp. 105-112, (1994)","S.M. Sigward; Musculoskeletal Biomechanics Research Laboratory, Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 90089, 1540 East Alcazar Street, United States; email: sigward@usc.edu","","","02680033","","CLBIE","16209900","English","Clin. Biomech.","Article","Final","","Scopus","2-s2.0-28444466257" "Levanon J.; Dapena J.","Levanon, Jacob (7801481268); Dapena, Jesús (7003633458)","7801481268; 7003633458","Comparison of the kinematics of the full-instep and pass kicks in soccer","1998","Medicine and Science in Sports and Exercise","30","6","","917","927","10","155","10.1097/00005768-199806000-00022","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0031745499&doi=10.1097%2f00005768-199806000-00022&partnerID=40&md5=1c64b7255e03de986c033b1f41ebcc0a","Department of Kinesiology, Indiana University, Bloomington, IN 47405, United States","Levanon J., Department of Kinesiology, Indiana University, Bloomington, IN 47405, United States; Dapena J., Department of Kinesiology, Indiana University, Bloomington, IN 47405, United States","Purpose: The goal of this study was to gain a better understanding of the mechanics of the inside-of-the-foot passing shot used in soccer ('pass kick'). Methods: The motions of the pass kick were compared with those of the full-instep kick ('full kick'). The study followed an inverse dynamics approach, using three-dimensional cinematographic techniques. Results: At impact, the pelvis and the thigh-shank plane pointed more toward the right in the pass kick; the shank-foot plane also pointed further outward relative to the thigh-shank plane. Knee extension accounted for most of the speed of the foot in both kicks (86% in the full kick; 67% in the pass kick). In the pass kick, pelvis tilt toward the fight and hip adduction contributed to a medial component of foot velocity (8.4 m.s-1) normal to the thigh-shank plane, which made the resultant foot velocity vector more oblique to the plane than in the full kick. This facilitated ball impact with the medial aspect of the foot. The slower ball speed in the pass kick was because of a slower foot speed (18.3 m.s-1 vs 21.6 m.s-1). Limitations in the maximum medial velocity that can be generated may force players to restrain the within- plane (and therefore also the resultant) velocity of the foot to be able to impact the ball squarely with the medial aspect of the foot. Conclusions: To impact the ball with the medial aspect of the foot in the pass kick, the player orients the pelvis, the fight leg, and the foot more toward the fight and introduces a medial component of foot velocity. However, most of the speed of the foot is still generated through knee extension.","Biomechanics; Full instep kick; Inside-of-the-foot passing shot; Three-dimensional","Adult; Biomechanics; Humans; Knee Joint; Male; Motor Activity; Posture; Soccer; Video Recording; adult; article; biomechanics; dynamics; human; kinetics; male; motion; normal human; sport","Abdel-Aziz Y.I., Karara H.M., Direct linear transformation from comparator coordinates into object space coordinates in close-range photogrammetry, Proceedings of ASP/UI Symposium on Close Range Photogrammetry, pp. 1-18, (1971); Chung C.S., Three-dimensional Analysis of the Shoulder and Elbow Joints during the Volleyball Spike., (1988); Chung C.S., Kwak C.S., Choi K.J., Shin I.S., Three-dimensional analysis of the spiking arm during the volleyball spike, Korean J. Sport Sci., 2, pp. 124-151, (1990); Feltner M.E., Dapena J., Dynamics of the shoulder and elbow joints of the throwing arm during a baseball pitch, Int. J. Sport Biomech., 2, pp. 235-259, (1986); Plagenhoef S., Patterns of Human Motion, pp. 98-117, (1971); Putnam C.A., Segmental Interaction in Selected Two-segment Motions., (1980); Putnam C.A., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Med. Sci. Sports Exerc., 23, pp. 130-141, (1991); Roberts E.M., Metcalfe A., Mechanical analysis of kicking, Biomechanics: Technique of Drawings of Movement and Movement Analysis, pp. 315-319, (1968); Roberts E.M., Zernicke R.F., Youm Y., Huang T.C., Kinetic parameters of kicking, Biomechanics, 4, pp. 157-162, (1974); Robertson D.G.E., Mosher R.E., Work and Power of the Leg Muscles in Soccer Kicking, pp. 533-538, (1985); Vaughan C.L., An Optimization Approach to Closed Loop Problems in Biomechanics., (1980); Wahrenberg H., Lindbeck L., Ekholm J., Knee muscular moment, tendon tension force and EMG during a vigorous movement in man, Scand. J. Rehabil Med., 10, pp. 99-106, (1978); Walton J.S., Close Range Cine Photogrammetry: A Generalised Technique for Quantifying Gross Human Motion., (1981); Wood G.A., Jennings L.S., On the use of spline functions for data smoothing, J. Biomech., 12, pp. 477-479, (1979); Zernicke R.F., Roberts E.M., Lower extremity forces and torques during systematic variation of non-weight bearing motion, Med. Sci. Sports, 10, pp. 21-26, (1978)","J. Dapena; Department of Kinesiology, Indiana University, Bloomington, IN 47405, United States; email: dapena@valeri.hper.indiana.edu","","","01959131","","MSCSB","9624652","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-0031745499" "Ford K.R.; Myer G.D.; Smith R.L.; Vianello R.M.; Seiwert S.L.; Hewett T.E.","Ford, Kevin R. (7102539333); Myer, Gregory D. (6701852696); Smith, Rose L. (7410292577); Vianello, Rebecca M. (9732440600); Seiwert, Shelly L. (9733639200); Hewett, Timothy E. (7005201943)","7102539333; 6701852696; 7410292577; 9732440600; 9733639200; 7005201943","A comparison of dynamic coronal plane excursion between matched male and female athletes when performing single leg landings","2006","Clinical Biomechanics","21","1","","33","40","7","143","10.1016/j.clinbiomech.2005.08.010","https://www.scopus.com/inward/record.uri?eid=2-s2.0-28444445629&doi=10.1016%2fj.clinbiomech.2005.08.010&partnerID=40&md5=3935080d56c00857168329213960c7b0","Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Research Foundation, Cincinnati, OH 45229, 3333 Burnet Avenue, United States; College of Allied Health Sciences, Physical Therapy Department, University of Cincinnati, Cincinnati, OH 45221, United States; College of Medicine, Departments of Pediatrics and Orthopaedic Surgery, University of Cincinnati, Cincinnati, OH 45221, United States","Ford K.R., Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Research Foundation, Cincinnati, OH 45229, 3333 Burnet Avenue, United States; Myer G.D., Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Research Foundation, Cincinnati, OH 45229, 3333 Burnet Avenue, United States; Smith R.L., College of Allied Health Sciences, Physical Therapy Department, University of Cincinnati, Cincinnati, OH 45221, United States; Vianello R.M., College of Allied Health Sciences, Physical Therapy Department, University of Cincinnati, Cincinnati, OH 45221, United States; Seiwert S.L., College of Allied Health Sciences, Physical Therapy Department, University of Cincinnati, Cincinnati, OH 45221, United States; Hewett T.E., Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Research Foundation, Cincinnati, OH 45229, 3333 Burnet Avenue, United States, College of Allied Health Sciences, Physical Therapy Department, University of Cincinnati, Cincinnati, OH 45221, United States, College of Medicine, Departments of Pediatrics and Orthopaedic Surgery, University of Cincinnati, Cincinnati, OH 45221, United States","Background. Despite recent evidence supporting the use of neuromuscular training to reduce anterior cruciate ligament injury risk, female athletes continue to show an increased anterior cruciate ligament injury rate in collegiate basketball and soccer when compared to males. The purpose of the current study was to identify gender and task differences in measures that may increase the risk of anterior cruciate ligament injury in female basketball and soccer athletes. Methods. Eleven female and 11 male collegiate basketball and soccer athletes were height (female mean 176 (SD 8 cm), male mean 176 (SD 8 cm)) and weight (female mean 73 (SD 7 kg), male mean 74 (SD 6 kg)) matched. Three-dimensional motion analysis was used to calculate differences in total coronal plane angular joint excursion (maximum-minimum) between male and female athletes when performing a series of medially and laterally directed drop landings. Findings. Female athletes demonstrated increased total coronal plane excursion for the hip, knee and ankle (P < 0.05) during the medial drop landing. During the lateral drop landing females displayed increased excursion at the hip and knee. When comparing tasks, the lateral drop landing resulted in greater coronal plane excursion at the hip (P < 0.05) while the knee showed no differences between movements. In contrast, females demonstrated increased ankle excursion during the medial drop task (P < 0.05). Interpretation. Female athletes demonstrate increased lower extremity coronal plane excursion when performing single leg drop landing in both the medial and lateral direction when compared to height/weight matched male athletes. This increased coronal plane oscillation of lower extremity joints may be related to the increased risk of anterior cruciate ligament injury for female basketball and soccer athletes. © 2005 Elsevier Ltd. All rights reserved.","ACL injury; Biomechanics; Gender differences; Neuromuscular; Valgus knee","Adult; Female; Humans; Joints; Leg; Locomotion; Male; Motion; Range of Motion, Articular; Sex Factors; Soccer; Task Performance and Analysis; Motion estimation; Risk assessment; Three dimensional; ankle; article; athlete; biomechanics; body height; body weight; controlled study; female; hip; human; knee; male; motor performance; priority journal; sex difference; task performance; three dimensional imaging; Ligament injury; Neuromuscular; Biomechanics","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A 13-year review, Am. J. Sports Med., 33, pp. 524-530, (2005); Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. NCAA data and review of literature, Am. J. Sports Med., 23, pp. 694-701, (1995); Bellchamber T.L., Van Den Bogert A.J., Contributions of proximal and distal moments to axial tibial rotation during walking and running, J. Biomech., 33, pp. 1397-1403, (2000); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopaedics, 23, pp. 573-578, (2000); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med. Sci. Sports Exerc., 35, pp. 1745-1750, (2003); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Med. Sci. Sports Exerc., 37, pp. 124-129, (2005); Griffin L.Y., Agel J., Albohm M.J., Arendt E.A., Dick R.W., Garrett W.E., Garrick J.G., Hewett T.E., Huston L., Ireland M.L., Johnson R.J., Kibler W.B., Lephart S., Lewis J.L., Lindenfeld T.N., Mandelbaum B.R., Marchak P., Teitz C.C., Wojtys E.M., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, J. Am. Acad. Orthop. Surg., 8, pp. 141-150, (2000); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes. a prospective study, Am. J. Sports Med., 27, pp. 699-706, (1999); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J. Bone Joint Surg. Am., 86 A, pp. 1601-1608, (2004); Hewett T.E., Myer G.D., Ford K.R., Heidt Jr. R.S., Colosimo A.J., McLean S.G., Van Den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes, Am. J. Sports Med., 33, pp. 492-501, (2005); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes. Decreased impact forces and increased hamstring torques, Am. J. Sports Med., 24, pp. 765-773, (1996); Loudon J.K., Jenkins W., Loudon K.L., The relationship between static posture and ACL injury in female athletes, J. Orthop. Sports Phys. Ther., 24, pp. 91-97, (1996); Lu T.W., O'Connor J.J., Bone position estimation from skin marker co-ordinates using global optimisation with joint constraints, J. Biomech., 32, pp. 129-134, (1999); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin. Biomech., 16, pp. 438-445, (2001); Malone T.R., Hardaker W.T., Garrett W.E., Feagin J.A., Bassett F.H., Relationship of gender to anterior cruciate ligament injuries in intercollegiate basketball players, J. Southern Orthop. Assoc., 2, pp. 36-39, (1993); McLean S.G., Huang X., Su A., Van Den Bogert A.J., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clin. Biomech., 19, pp. 828-838, (2004); McLean S.G., Lipfert S.W., Van Den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med. Sci. Sports Exerc., 36, pp. 1008-1016, (2004); McLean S.G., Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: Potential for injury in women, Med. Sci. Sports Exerc., 31, pp. 959-968, (1999); McLean S.G., Su A., Van Den Bogert A.J., Development and validation of a 3-D model to predict knee joint loading during dynamic movement, J. Biol. Chem., 125, pp. 864-874, (2003); McLean S.G., Walker K., Ford K.R., Myer G.D., Hewett T.E., Van Den Bogert A.J., Evaluation of a two dimensional analysis method as a screening and evaluation tool for anterior cruciate ligament injury, Br. J. Sports Med., 39, pp. 355-362, (2005); McNair P.J., Marshall R.N., Matheson J.A., Important features associated with acute anterior cruciate ligament injury, N. Z. Med. J., 103, pp. 537-539, (1990); Mundermann A., Nigg B.M., Humble R.N., Stefanyshyn D.J., Foot orthotics affect lower extremity kinematics and kinetics during running, Clin. Biomech., 18, pp. 254-262, (2003); Myer G.D., Ford K.R., Hewett T.E., A comparison of medial knee motion in basketball players when performing a basketball rebound, Med. Sci. Sports Exerc., 34, (2002); Myer G.D., Ford K.R., Hewett T.E., Rationale and clinical techniques for anterior cruciate ligament injury prevention in female athletes, J. Athl. Train., 39, pp. 352-364, (2004); Myer G.D., Ford K.R., Hewett T.E., The effects of gender on quadriceps muscle activation strategies during a maneuver that mimics a high ACL injury risk position, J. Electromyogr. Kinesiol., 15, pp. 181-189, (2005); Myer G.D., Ford K.R., Palumbo J.P., Hewett T.E., Neuromuscular training improves performance and lower-extremity biomechanics in female athletes, J. Strength Cond. Res., 19, pp. 51-60, (2005); Myer G.D., Hewett T.E., Noyes F.R., The use of video analysis to identify athletes with increased valgus knee excursion: Effects of gender and training, Med. Sci. Sports Exerc., 32, (2000); Nyland J., Caborn D.N., Shapiro R., Johnson D.L., Fang H., Hamstring extensibility and transverse plane knee control relationship in athletic women, Knee Surg. Sports Traumatol. Arthrosc., 7, pp. 257-261, (1999); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am. J. Sports Med., 32, pp. 1002-1012, (2004); Padua D.A., Marshall S.W., Beutler A.I., Demaio M., Boden B.P., Yu B., Garrett W.E., Predictors of knee valgus angle during a jump-landing task, Med. Sci. Sports Exerc., 37, (2005); Woltring H.J., Huiskes R., De Lange A., Veldpaus F.E., Finite centroid and helical axis estimation from noisy landmark measurements in the study of human joint kinematics, J. Biomech., 18, pp. 379-389, (1985)","K.R. Ford; Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Research Foundation, Cincinnati, OH 45229, 3333 Burnet Avenue, United States; email: kevin.ford@cchmc.org","","","02680033","","CLBIE","16198030","English","Clin. Biomech.","Article","Final","","Scopus","2-s2.0-28444445629" "Samozino P.; Edouard P.; Sangnier S.; Brughelli M.; Gimenez P.; Morin J.-B.","Samozino, P. (14024773800); Edouard, P. (16506291300); Sangnier, S. (23009733300); Brughelli, M. (17433572900); Gimenez, P. (24597331900); Morin, J.-B. (55917329600)","14024773800; 16506291300; 23009733300; 17433572900; 24597331900; 55917329600","Force-velocity profile: Imbalance determination and effect on lower limb ballistic performance","2014","International Journal of Sports Medicine","35","6","","505","510","5","160","10.1055/s-0033-1354382","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901596237&doi=10.1055%2fs-0033-1354382&partnerID=40&md5=caa93608cc38ced7f93f6f8474d0d705","Laboratory of Exercise Physiology (EA4338), University of Savoie, UFR CISM - Technolac, Le Bourget du Lac 73376, France; Department of Clinical and Exercise Physiology, Sports Medicine Unity, University-Hospital of Saint-Etienne, France; Laboratory of Exercise Physiology (EA4338), University of Lyon, Saint Etienne, France; Centre d'Etude des Transformations des Activités Physiques et Sportives (EA 3832), University of Rouen, France; Association Sportive de Saint-Etienne, France; Sports Performance Research Institute New Zealand, AUT University, Auckland, New Zealand","Samozino P., Laboratory of Exercise Physiology (EA4338), University of Savoie, UFR CISM - Technolac, Le Bourget du Lac 73376, France; Edouard P., Department of Clinical and Exercise Physiology, Sports Medicine Unity, University-Hospital of Saint-Etienne, France, Laboratory of Exercise Physiology (EA4338), University of Lyon, Saint Etienne, France; Sangnier S., Centre d'Etude des Transformations des Activités Physiques et Sportives (EA 3832), University of Rouen, France, Association Sportive de Saint-Etienne, France; Brughelli M., Sports Performance Research Institute New Zealand, AUT University, Auckland, New Zealand; Gimenez P., Laboratory of Exercise Physiology (EA4338), University of Lyon, Saint Etienne, France; Morin J.-B., Laboratory of Exercise Physiology (EA4338), University of Lyon, Saint Etienne, France","This study sought to lend experimental support to the theoretical influence of force-velocity (F-v) mechanical profile on jumping performance independently from the effect of maximal power output (P max). 48 high-level athletes (soccer players, sprinters, rugby players) performed maximal squat jumps with additional loads from 0 to 100% of body mass. During each jump, mean force, velocity and power output were obtained using a simple computation method based on flight time, and then used to determine individual linear F-v relationships and P max values. Actual and optimal F-v profiles were computed for each subject to quantify mechanical F-v imbalance. A multiple regression analysis showed, with a high-adjustment quality (r2;=0.931, P<0.001, SEE=0.015 m), significant contributions of P max, F-v imbalance and lower limb extension range (h PO) to explain interindividual differences in jumping performance (P<0.001) with positive regression coefficients for P max and h PO and a negative one for F-v imbalance. This experimentally supports that ballistic performance depends, in addition to P max, on the F-v profile of lower limbs. This adds support to the actual existence of an individual optimal F-v profile that maximizes jumping performance, a F-v imbalance being associated to a lower performance. These results have potential strong applications in the field of strength and conditioning. © Georg Thieme Verlag KG Stuttgart · New York.","explosive push-off; jump; maximal power output; muscle mechanical properties; optimal force-velocity profile; strength training","Acceleration; Adult; Athletic Performance; Biomechanical Phenomena; Humans; Linear Models; Lower Extremity; Muscle Strength; Physical Education and Training; Plyometric Exercise; Young Adult; acceleration; adult; athletic performance; biomechanics; human; leg; muscle strength; physical education; physiology; plyometrics; statistical model; young adult","Alexander R.M., Leg design and jumping technique for humans, other vertebrates and insects, Philos Trans R Soc Lond B Biol Sci, 347, pp. 235-248, (1995); Andrews G.C., Biomechanical measures of muscular effort, Med Sci Sports Exerc, 15, pp. 199-207, (1983); Asmussen E., Bonde-Petersen F., Storage of elastic energy in skeletal muscles in man, Acta Physiol Scand, 91, pp. 385-392, (1974); Bobbert M.F., Why is the force-velocity relationship in leg press tasks quasi-linear rather than hyperbolic, J Appl Physiol, (2012); Bosco C., Belli A., Astrua M., Tihanyi J., Pozzo R., Kellis S., Tsarpela O., Foti C., Manno R., Tranquilli C., A dynamometer for evaluation of dynamic muscle work, Eur J Appl Physiol, 70, pp. 379-386, (1995); Cormie P., McCaulley G.O., McBride J.M., Power versus strength-power jump squat training: Influence on the load-power relationship, Medicine and Science in Sports and Exercise, 39, 6, pp. 996-1003, (2007); Cormie P., McGuigan M.R., Newton R.U., Adaptations in athletic performance after ballistic power versus strength training, Med Sci Sports Exerc, 42, pp. 1582-1598, (2010); Cormie P., McGuigan M.R., Newton R.U., Influence of strength on magnitude and mechanisms of adaptation to power training, Med Sci Sports Exerc, 42, pp. 1566-1581, (2010); Cormie P., McGuigan M.R., Newton R.U., Developing maximal neuromuscular power: Part 1 - Biological basis of maximal power production, Sports Med, 41, pp. 17-38, (2011); Cronin J., McNair P.J., Marshall R.N., Velocity specificity, combination training and sport specific tasks, Journal of Science and Medicine in Sport, 4, 2, pp. 168-178, (2001); Cronin J., Sleivert G., Challenges in understanding the influence of maximal power training on improving athletic performance, Sports Medicine, 35, 3, pp. 213-234, (2005); Domire Z.J., Challis J.H., The influence of squat depth on maximal vertical jump performance, Journal of Sports Sciences, 25, 2, pp. 193-200, (2007); Driss T., Vandewalle H., Monod H., Maximal power and force-velocity relationships during cycling and cranking exercises in volleyball players: Correlation with the vertical jump test, Journal of Sports Medicine and Physical Fitness, 38, 4, pp. 286-293, (1998); Harris M.A., Steudel K., The relationship between maximum jumping performance and hind limb morphology/physiology in domestic cats (Felis silvestris catus), Journal of Experimental Biology, 205, 24, pp. 3877-3889, (2002); Harris N.K., Cronin J.B., Hopkins W.G., Hansen K.T., Squat jump training at maximal power loads vs. Heavy loads: Effect on sprint ability, J Strength Cond Res, 22, pp. 1742-1749, (2008); Harriss D.J., Atkinson G., Update - Ethical standards in sport and exercise science research, Int J Sports Med, 32, pp. 819-821, (2011); Hopkins W.G., Schabort E.J., Hawley J.A., Reliability of power in physical performance tests, Sports Medicine, 31, 3, pp. 211-234, (2001); James R.S., Wilson R.S., Explosive jumping: Extreme morphological and physiological specializations of Australian rocket frogs (Litoria nasuta), Physiological and Biochemical Zoology, 81, 2, pp. 176-185, (2008); Jaric S., Markovic G., Leg muscles design: The maximum dynamic output hypothesis, Med Sci Sports Exerc, 41, pp. 780-787, (2009); Kaneko M., Fuchimoto T., Toji H., Suei K., Training effect of different loads on the force-velocity relationship and mechanical power output in human muscle, Scandinavian Journal of Sports Sciences, 5, 2, pp. 50-55, (1983); Markovic G., Jaric S., Positive and negative loading and mechanical output in maximum vertical jumping, Medicine and Science in Sports and Exercise, 39, 10, pp. 1757-1764, (2007); McBride J.M., Triplett-Mcbride T., Davie A., Newton R.U., The effect of heavy- vs. Light-load jump squats on the development of strength, power, and speed, J Strength Cond Res, 16, pp. 75-82, (2002); Nedeljkovic A., Mirkov D.M., Bozic P., Jaric S., Tests of muscle power output: The role of body size, Int J Sports Med, 30, pp. 100-106, (2009); Nuzzo J.L., McBride J.M., Dayne A.M., Israetel M.A., Dumke C.L., Triplett N.T., Testing of the maximal dynamic output hypothesis in trained and untrained subjects, J Strength Cond Res, 24, pp. 1269-1276, (2011); Pazin N., Berjan B., Nedeljkovic A., Markovic G., Jaric S., Power output in vertical jumps: Does optimum loading depend on activity profiles, Eur J Appl Physiol, 113, pp. 577-589, (2013); Pazin N., Bozic P., Bobana B., Nedeljkovic A., Jaric S., Optimum loading for maximizing muscle power output: The effect of training history, Eur J Appl Physiol, 111, pp. 2123-2130, (2011); Rahmani A., Viale F., Dalleau G., Lacour J.-R., Force/velocity and power/velocity relationships in squat exercise, European Journal of Applied Physiology, 84, 3, pp. 227-232, (2001); Samozino P., Morin J.B., Hintzy F., Belli A., A simple method for measuring force, velocity and power output during squat jump, J Biomech, 41, pp. 2940-2945, (2008); Samozino P., Morin J.B., Hintzy F., Belli A., Jumping ability: A theoretical integrative approach, J Theor Biol, 264, pp. 11-18, (2010); Samozino P., Rejc E., Di Prampero P.E., Belli A., Morin J.B., Optimal force-velocity profile in ballistic movements. Altius, citius or fortius, Med Sci Sports Exerc, 44, pp. 313-322, (2012); Selbie W.S., Caldwell G.E., A simulation study of vertical jumping from different starting postures, Journal of Biomechanics, 29, 9, pp. 1137-1146, (1996); Vandewalle H., Peres G., Heller J., Panel J., Monod H., Force-velocity relationship and maximal power on a cycle ergometer. Correlation with the height of a vertical jump, European Journal of Applied Physiology and Occupational Physiology, 56, 6, pp. 650-656, (1987); Yamauchi J., Ishii N., Relations between force-velocity characteristics of the knee-hip extension movement and vertical jump performance, J Strength Cond Res, 21, pp. 703-709, (2007)","P. Samozino; Laboratory of Exercise Physiology (EA4338), University of Savoie, UFR CISM - Technolac, Le Bourget du Lac 73376, France; email: pierre.samozino@univ-savoie.fr","","Georg Thieme Verlag","01724622","","IJSMD","24227123","English","Int. J. Sports Med.","Article","Final","","Scopus","2-s2.0-84901596237" "Gutierrez G.M.; Conte C.; Lightbourne K.","Gutierrez, Gregory M. (8859096100); Conte, Catherine (57197904744); Lightbourne, Kristian (55778228100)","8859096100; 57197904744; 55778228100","The relationship between impact force, neck strength, and neurocognitive performance in soccer heading in adolescent females","2014","Pediatric Exercise Science","26","1","","33","40","7","84","10.1123/pes.2013-0102","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896992099&doi=10.1123%2fpes.2013-0102&partnerID=40&md5=06656ed9447fedb4f7c998e25369cc25","New York University, Dept. of Physical Therapy, New York, NY, United States; Ossining High School, Science Research Program, Ossining, NY, United States; Polytechnic Institute, New York University, Dept. of Technology Management and Innovation, Brooklyn, NY, United States","Gutierrez G.M., New York University, Dept. of Physical Therapy, New York, NY, United States; Conte C., Ossining High School, Science Research Program, Ossining, NY, United States; Lightbourne K., Polytechnic Institute, New York University, Dept. of Technology Management and Innovation, Brooklyn, NY, United States","Head impacts are common in contact sports, but only recently has there been a rising awareness of the effects of subconcussive impacts in adolescent athletes. A better understanding of how to attenuate head impacts is needed and therefore, this study investigated the relationship between neck strength, impact, and neurocognitive function in an acute bout of soccer heading in a sample of female high school varsity soccer players. Seventeen participants completed the ImPACT neurocognitive test and had their isometric neck strength tested (flexion, extension, and bilateral flexion) before heading drills. Each participant was outfitted with custom headgear with timing switches and a three-dimensional accelerometer affixed to the back of the head, which allowed for measurement of impact during heading. Participants performed a series of 15 directional headers, including 5 forward, 5 left and 5 right headers in a random order, then completed the ImPACT test again. Neurocognitive tests revealed no significant changes following heading. However, there were statistically significant, moderate, negative correlations (r = 0.500:0.757, p < .05) between neck strength and resultant header acceleration, indicating that those with weaker necks sustained greater impacts. This suggests neck strengthening may be an important component of any head injury prevention/reduction program. © 2014 Human Kinetics, Inc.","Adolescent; Biomechanics; Exercise training; Gender; Sport medicine; Strength","Accelerometry; Adolescent; Brain Concussion; Cognition; Craniocerebral Trauma; Cross-Sectional Studies; Female; Humans; Muscle Strength; Neck; Neuropsychological Tests; Soccer; Task Performance and Analysis; accelerometry; adolescent; brain concussion; cognition; Craniocerebral Trauma; cross-sectional study; female; human; injuries; muscle strength; neck; neuropsychological test; pathophysiology; physiology; soccer; task performance","Broglio S.P., Schnebel B., Sosnoff J.J., Et al., Biomechanical properties of concussions in high school football, Med Sci Sports Exerc., 42, 11, pp. 2064-2071, (2010); Broglio S.P., Eckner J.T., Kutcher J.S., Field-based measures of head impacts in high school football athletes, Curr Opin Pediatr., 24, 6, pp. 702-708, (2012); Daneshvar D.H., Baugh C.M., Nowinski C.J., McKee A.C., Stern R.A., Cantu R.C., Helmets and mouth guards: The role of personal equipment in preventing sport-related concussions, Clin Sports Med., 30, 1, pp. 145-163, (2011); Dezman Z.D.W., Ledet E.H., Kerr H.A., Neck strength imbalance correlates with increased head acceleration in soccer heading, Sports Health., 5, 4, pp. 320-326, (2013); Dick R.W., Is there a gender difference in concussion incidence and outcomes?, Br J Sports Med., 43, SUPPL. 1, (2009); Field M., Collins M.W., Lovell M.R., Maroon J., Does age play a role in recovery from sports-related concussion? a comparison of high school and collegiate athletes, J Pediatr., 142, 5, pp. 546-553, (2003); Gavett B.E., Stern R.A., McKee A.C., Chronic traumatic encephalopathy: A potential late effect of sport-related concussive and subconcussive head trauma, Clin J Sports Med., 30, 1, pp. 179-188, (2011); Gessel L.M., Fields S.K., Collins C.L., Dick R.W., Comstock R.D., Concussions among united states high school and collegiate athletes, J Athl Train., 42, 4, pp. 495-503, (2007); Greenwald R.M., Gwin J.T., Chu J.J., Crisco J.J., Head impact severity measures for evaluating mild traumatic brain injury risk exposure, Neurosurgery., 62, 4, pp. 789-798, (2008); Guskiewicz K.M., Mihalik J.P., Shankar V., Et al., Measurement of head impacts in collegiate football players: Relationship between head impact biomechanics and acute clinical outcome after concussion, Neurosurgery., 61, 6, pp. 1244-1252, (2007); Guskiewicz K.M., Mihalik J.P., Biomechanics of sport concussion: Quest for the elusive injury threshold, Exerc Sport Sci Rev., 39, 1, pp. 4-11, (2011); Gysland S.M., Mihalik J.P., Register-Mihalik J.K., Trulock S.C., Shields E.W., Guskiewicz K.M., The relationship between subconcussive impacts and concussion history on clinical measures of neurologic function in collegiate football players, Ann Biomed Eng., 40, 1, pp. 14-22, (2012); Hagel B., Meeuwisse W., Risk compensation: A ""side effect"" of sport injury prevention?, Clin J Sport Med., 14, 4, pp. 193-196, (2004); Kaminski T.W., Wikstrom A.M., Gutierrez G.M., Glutting J.J., Purposeful heading during a season does not influence cognitive or balance in female soccer players, J Clin Exp Neuropsychol., 29, 7, pp. 742-751, (2007); Kirkendall D.T., Garrett W.E., Heading in soccer: Integral skill or grounds for cognitive dysfunction?, J Athl Train., 36, 3, pp. 328-333, (2001); Langlois J.A., Rutland-Brown W., Wald M.M., The epidemiology of traumatic brain injury: A brief overview, J Head Trauma Rehabil., 21, 5, pp. 375-378, (2006); Lipton M.L., Namhee K., Zimmerman M.E., Et al., Soccer heading is associated with white matter microstructural and cognitive abnormalities, Radiology., 268, 3, pp. 850-857, (2013); Mansell J., Tierney R.T., Sitler M.R., Swanik K.A., Stearne D., Resistance training and head-neck segment dynamic stabilization in male and female collegiate soccer players, J Athl Train., 40, 4, pp. 310-319, (2005); Matser J.T., Kessels A.G., Jordan B.D., Lezak M.D., Troost J., Chronic traumatic brain injury in professional soccer players, Neurology., 51, 3, pp. 791-796, (1998); Matser E.J., Kessels A.G., Lezak M.D., Jordan B.D., Troost J., Neuropsychological impairment in amateur soccer players, JAMA, 282, 10, pp. 971-973, (1999); McCrea M., Hammeke T., Olsen G., Leo P., Guskiewicz K., Unreported concussion in high school football players: Implications for prevention, Clin J Sport Med., 14, 1, pp. 13-17, (2004); McCrory P., Meeuwisse W.H., Aubry M., Et al., Consensus statement on concussion in sport: The 4th International Conference on Concussion in Sport held in Zurich, November 2012, Br J Sports Med., 47, 5, pp. 250-258, (2013); Mehnert M.J., Agesen T., Malanga G.A., heading"" and neck injuries in soccer: A review of biomechanics and potential long-term effects, Pain Physician., 8, 4, pp. 391-397, (2005); Ommaya A.K., Gennarelli T.A., Cerebral concussion and traumatic unconsciousness. Correlation of experimental and clinical observations of blunt head injuries, Brain., 97, 4, pp. 633-654, (1974); Phillips R.O., Fyhri A., Sagberg F., Risk compensation and bicycle helmets, Risk Anal., 31, 8, pp. 1187-1195, (2011); Powell J.W., Barber-Foss K., Traumatic brain injury in high school athletes, JAMA, 282, 10, pp. 958-963, (1999); Reilly T., Thomas V., A motion analysis of work-rate in different positional roles in professional football match-play, J Hum Mov Stud., 2, pp. 87-97, (1976); Spiotta A.M., Bartsch A.J., Benzel E.C., Heading in soccer: Dangerous play?, Neurosurgery., 70, 1, pp. 1-11, (2012); Straume-Naesheim T.M., Andersen T.E., Dvorak J., Bahr R., Effects of heading exposure and previous concussions on neuropsychological performance among norweigan elite footballers, Br J Sports Med., 39, SUPPL. 1, (2005); Tierney R.T., Sitler M.R., Swanik C.B., Swanik K.A., Higgins M., Torg J., Gender differences in head-neck segment dynamic stabilization during head acceleration, Med Sci Sports Exerc., 37, 2, pp. 272-279, (2005); Tierney R.T., Higgins M., Caswell S.V., Et al., Sex differences in head acceleration during heading while wearing soccer headgear, J Athl Train., 43, 6, pp. 578-584, (2008); Viano D.C., Casson I.R., Pellman E.J., Concussion in professional football: Biomechanics of the struck player-part 14, Neurosurgery., 61, 2, pp. 313-327, (2007)","","","Human Kinetics Publishers Inc.","08998493","","PEXSF","24091298","English","Pediatr. Exerc. Sci.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-84896992099" "Mihalik J.P.; Bell D.R.; Marshall S.W.; Guskiewicz K.M.","Mihalik, Jason P. (8428192600); Bell, David R. (55737071800); Marshall, Stephen W. (7401823263); Guskiewicz, Kevin M. (7004697944)","8428192600; 55737071800; 7401823263; 7004697944","Measurement of head impacts in collegiate football players: An investigation of positional and event-type differences","2007","Neurosurgery","61","6","","1229","1235","6","235","10.1227/01.neu.0000306101.83882.c8","https://www.scopus.com/inward/record.uri?eid=2-s2.0-37649013585&doi=10.1227%2f01.neu.0000306101.83882.c8&partnerID=40&md5=01e9f7f25b7a8482318bcbbf207733ea","Department of Exercise and Sport Science, Curriculum in Human Movement Science, University of North Carolina, Chapel Hill, NC, United States; Injury Prevention Research Center, Department of Epidemiology, University of North Carolina, Chapel Hill, NC, United States; Department of Exercise and Sport Science, Injury Prevention Research Center, University of North Carolina, Chapel Hill, NC, United States; University of North Carolina at Chapel Hill, 209 Fetzer Gymnasium (CB# 8700), Chapel Hill, NC 27599, South Road, United States","Mihalik J.P., Department of Exercise and Sport Science, Curriculum in Human Movement Science, University of North Carolina, Chapel Hill, NC, United States; Bell D.R., Department of Exercise and Sport Science, Curriculum in Human Movement Science, University of North Carolina, Chapel Hill, NC, United States; Marshall S.W., Injury Prevention Research Center, Department of Epidemiology, University of North Carolina, Chapel Hill, NC, United States; Guskiewicz K.M., Department of Exercise and Sport Science, Injury Prevention Research Center, University of North Carolina, Chapel Hill, NC, United States, University of North Carolina at Chapel Hill, 209 Fetzer Gymnasium (CB# 8700), Chapel Hill, NC 27599, South Road, United States","OBJECTIVE: There exists a need to better understand the biomechanical forces associated with head impacts in American football. The purpose of this study was to investigate whether or not differences in head accelerations existed between different player positions and different event types in collegiate football. We also sought to identify whether or not any associations existed between high-magnitude impacts and location of head impacts. METHODS: We conducted a prospective field study in which accelerometers were embedded in the football helmets of 72 collegiate football players. Linear accelerations of all head impacts sustained over the course of the 2005 and 2006 National Collegiate Athletic Association football seasons were collected. One-way analyses of variance and χ tests of association assessed positional, event type, and location of head impact differences. RESULTS: Football players consistently sustained head impacts between 21 and 23 g. Positional differences were identified within our sample. Impacts sustained during helmets-only practices were greater than those sustained in games or scrimmages. There was an association between position and high-magnitude impacts, as well as between high-magnitude impacts and location of head impact, with the likelihood of impacts to the top of the head much higher than those to the front, back, left, and right sides. CONCLUSION: Less than 0.35% of impacts exceeding theoretical injury thresholds resulted in concussion. More injury data are required before any theoretical thresholds for injury can be confirmed. Coaches and sports medicine professionals should recognize that head impacts sustained in helmets-only practices are as severe as games or scrimmages; there seem to be no ""light"" days for football players. Copyright © by the Congress of Neurological Surgeons.","Biomechanics; Concussion; Helmet; Injury threshold; Mild traumatic brain injury","Acceleration; Adolescent; Adult; Athletic Injuries; Biomechanics; Brain Concussion; Football; Head Protective Devices; Humans; Male; Physical Stimulation; Prospective Studies; Retrospective Studies; Risk Assessment; Universities; accelerometry; adult; article; biomechanics; football; force; helmet; human; human experiment; male; normal human; priority journal; risk assessment; traumatic brain injury","Boake C., McCauley S.R., Levin H.S., Pedroza C., Contant C.F., Song J.X., Brown S.A., Goodman H., Brundage S.I., Diaz-Marchan P.J., Diagnostic criteria for post-concussional syndrome after mild to moderate traumatic brain injury, J Neuropsychiatry Clin Neurosci, 17, pp. 350-356, (2005); Brolinson P.G., Manoogian S., McNeely D., Goforth M., Greenwald R., Duma S., Analysis of linear head accelerations from collegiate football impacts, Curr Sports Med Rep, 5, pp. 23-28, (2006); Duma S.M., Manoogian S.J., Bussone W.R., Brolinson P.G., Goforth M.W., Donnenwerth J.J., Greenwald R.M., Chu J.J., Crisco J.J., Analysis of real-time head accelerations in collegiate football players, Clin J Sport Med, 15, pp. 3-8, (2005); Gerberich S.G., Priest J.D., Boen J.R., Straub C.P., Maxwell R.E., Concussion incidences and severity in secondary school varsity football players, Am J Public Health, 73, pp. 1370-1375, (1983); Guskiewicz K.M., McCrea M., Marshall S.W., Cantu R.C., Randolph C., Barr W., Onate J.A., Kelly J.P., Cumulative effects associated with recurrent concussion in collegiate football players: The NCAA Concussion Study, JAMA, 290, pp. 2549-2555, (2003); Heck J.F., The incidence of spearing during a high school's 1975 and 1990 football seasons, J Athl Train, 31, pp. 31-37, (1996); Holm L., Cassidy J.D., Carroll L.J., Borg J., Neurotrauma Task Force on Mild Traumatic Brain Injury of the WHO Collaborating Centre: Summary of the WHO Collaborating Centre for Neurotrauma Task Force on Mild Traumatic Brain Injury, J Rehabil Med, 37, pp. 137-141, (2005); Mihalik J.P., Guskiewicz K.M., Notebaert A.J., Hooker D.N., Oliaro S.M., Crowell D.H., Ciocca M.F., Measurement of head impacts in Division I collegiate football players, J Athl Train, 40, (2005); Naunheim R.S., Standeven J., Richter C., Lewis L.M., Comparison of impact data in hockey, football, and soccer, J Trauma, 48, pp. 938-941, (2000); Nightingale R.W., Camacho D.L., Armstrong A.J., Robinette J.J., Myers B.S., Inertial properties and loading rates affect buckling modes and injury mechanisms in the cervical spine, J Biomech, 33, pp. 191-197, (2000); Nightingale R.W., McElhaney J.H., Richardson W.J., Best T.M., Myers B.S., Experimental impact injury to the cervical spine: Relating motion of the head and the mechanism of injury, J Bone Joint Surg Am, 78, pp. 412-421, (1996); Nightingale R.W., Richardson W.J., Myers B.S., The effects of padded surfaces on the risk for cervical spine injury, Spine, 22, pp. 2380-2387, (1997); Ommaya A.K., Gennarelli T.A., Cerebral concussion and traumatic unconsciousness. Correlation of experimental and clinical observations of blunt head injuries, Brain, 97, pp. 633-654, (1974); Pellman E.J., Lovell M.R., Viano D.C., Casson I.R., Concussion in professional football: Recovery of NFL and high school athletes assessed by computerized neuropsychological testing - Part 12, Neurosurgery, 58, pp. 263-274, (2006); Pellman E.J., Viano D.C., Tucker A.M., Casson I.R., Waeckerle J.F., Concussion in professional football: Reconstruction of game impacts and injuries, Neurosurgery, 53, pp. 799-814, (2003); Pudenz R.H., Shelden C.H., The lucite calvarium - A method for direct observation of the brain, J Neurosurg, 3, pp. 487-505, (1946); Schnakenberg-Ott S.D., Pardini J.E., Fazio V.C., Lovell M.R., Collins M.W., Region of injury and neuropsychological deficits in concussed athletes, 114th Annual Convention of the American Psychological Association, (2006); Schnebel B., Gwin J.T., Anderson S., Gatlin R., In vivo study of head impacts in football: A comparison of National Collegiate Athletic Association Division I versus high school impacts, Neurosurgery, 60, pp. 490-496, (2007); Torg J.S., The epidemiologic, biomechanical, and cinematographic analysis of football-induced cervical spine trauma and its prevention, Athletic Injuries to the Head, Neck, and Face, pp. 97-111, (1991); Winter D.A., Anthropometry, Biomechanics and Motor Control of Human Movement, pp. 59-85, (2005)","K.M. Guskiewicz; University of North Carolina at Chapel Hill, 209 Fetzer Gymnasium (CB# 8700), Chapel Hill, NC 27599, South Road, United States; email: gus@email.unc.edu","","","0148396X","","NRSRD","18162902","English","Neurosurgery","Article","Final","","Scopus","2-s2.0-37649013585" "Landry S.C.; McKean K.A.; Hubley-Kozey C.L.; Stanish W.D.; Deluzio K.J.","Landry, Scott C. (12773624500); McKean, Kelly A. (13403586300); Hubley-Kozey, Cheryl L. (6701405380); Stanish, William D. (7003622346); Deluzio, Kevin J. (6603424544)","12773624500; 13403586300; 6701405380; 7003622346; 6603424544","Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated side-cut maneuver","2007","American Journal of Sports Medicine","35","11","","1888","1900","12","109","10.1177/0363546507300823","https://www.scopus.com/inward/record.uri?eid=2-s2.0-35649003396&doi=10.1177%2f0363546507300823&partnerID=40&md5=57250481ecb4e29097a5fa3a827c1020","School of Biomedical Engineering, Dalhousie University, Halifax, NS, Canada; School of Physiotherapy, Dalhousie University, Halifax, NS, Canada; Department of Surgery, Division of Orthopaedics, Dalhousie University, Halifax, NS, Canada; Department of Mechanical and Materials Engineering, Queen's University, Kingston, Ont., Canada; Dalhousie University, Halifax, NS, 5981 University Avenue, Canada","Landry S.C., School of Biomedical Engineering, Dalhousie University, Halifax, NS, Canada, Dalhousie University, Halifax, NS, 5981 University Avenue, Canada; McKean K.A., School of Biomedical Engineering, Dalhousie University, Halifax, NS, Canada; Hubley-Kozey C.L., School of Biomedical Engineering, Dalhousie University, Halifax, NS, Canada, School of Physiotherapy, Dalhousie University, Halifax, NS, Canada; Stanish W.D., Department of Surgery, Division of Orthopaedics, Dalhousie University, Halifax, NS, Canada; Deluzio K.J., Department of Mechanical and Materials Engineering, Queen's University, Kingston, Ont., Canada","Background: Female athletes are 2 to 8 times more likely than male athletes to injure the anterior cruciate ligament during a noncontact athletic maneuver. Identifying anterior cruciate ligament injury risk factors in female athletes may help with the development of preventive training programs aimed at reducing injury rates. Hypothesis: Differences between genders in lower limb kinematics, kinetics, and neuromuscular patterns will be identified in an adolescent soccer population during an unanticipated side-cut maneuver. Study Design: Controlled laboratory study. Methods: Forty-two elite adolescent soccer players (21 male and 21 female) performed an unanticipated side-cut maneuver, with the 3-dimensional kinematic, kinetic, and electromyographic lower limb data being analyzed using principal component analysis. Results: The female athletes had higher gastrocnemius activity, normalized to maximal voluntary isometric contractions, and a mediolateral gastrocnemius activation imbalance that was not present in the male athletes during early stance to midstance of the side-cut. Female athletes demonstrated greater rectus femoris muscle activity throughout stance, and the only hamstring difference identified was a mediolateral activation imbalance in male athletes only. Female athletes performed the side-cut with less hip flexion and more hip external rotation and also generated a smaller hip flexion moment compared with the male athletes. Conclusion: This is the first study to identify gender-related differences in gastrocnemius muscle activity during an unanticipated cutting maneuver. Clinical Relevance: The increased and imbalanced gastrocnemius muscle activity, combined with increased rectus femoris muscle activity and reduced hip flexion angles and moments in female subjects, may all have important contributing roles in the higher noncontact ACL injury rates observed in female athletes. © 2007 American Orthopaedic Society for Sports Medicine.","Anterior cruciate ligament injury; Electromyography; Gender; Kinematics; Kinetics; Side-cut; Unanticipated","Adolescent; Anterior Cruciate Ligament; Biomechanics; Electromyography; Female; Humans; Knee Injuries; Leg; Male; Muscle, Skeletal; Principal Component Analysis; Range of Motion, Articular; Soccer; adolescent; adult; anterior cruciate ligament injury; article; athlete; biomechanics; controlled study; data analysis; electromyography; female; gastrocnemius muscle; hamstring; human; human experiment; kinematics; kinetics; leg; male; muscle contraction; muscle function; muscle isometric contraction; neuromuscular system; normal human; principal component analysis; priority journal; rectus femoris muscle; sex difference; standing","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A 13-year review, Am J Sports Med., 33, pp. 524-530, (2005); Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer: NCAA data and review of literature, Am J Sports Med., 23, pp. 694-701, (1995); Arms S.W., Pope M.H., Johnson R.J., Fischer R.A., Arvidsson I., Eriksson E., The biomechanics of anterior cruciate ligament rehabilitation and reconstruction, Am J Sports Med., 12, pp. 8-18, (1984); Benoit D.L., Ramsey D.K., Lamontagne M., Xu L., Wretenberg P., Renstrom P., Effect of skin movement artifact on knee kinematics during gait and cutting motions measured in vivo, Gait Posture, 24, pp. 152-164, (2006); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Med Sci Sports Exerc., 35, pp. 119-127, (2003); Besier T.F., Lloyd D.G., Ackland T.R., Cochrane J.L., Anticipatory effects on knee joint loading during running and cutting maneuvers, Med Sci Sports Exerc., 33, pp. 1176-1181, (2001); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc., 33, pp. 1168-1175, (2001); Boden B.P., Dean G.S., Feagin Jr. J.A., Garrett Jr. W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics., 23, pp. 573-578, (2000); Bretlau T., Tuxoe J., Larsen L., Jorgensen U., Thomsen H.S., Lausten G.S., Bone bruise in the acutely injured knee, Knee Surg Sports Traumatol Arthrosc., 10, pp. 96-101, (2002); Cappozzo A., Catani F., Croce U.D., Leardini A., Position and orientation in space of bones during movement: Anatomical frame definition and determination, Clin Biomech (Bristol, Avon), 10, pp. 171-178, (1995); Challis J.H., A procedure for determining rigid body transformation parameters, J Biomech, 28, pp. 733-737, (1995); Chau T., A review of analytical techniques for gait data, part 1: Fuzzy, statistical and fractal methods, Gait Posture, 13, pp. 49-66, (2001); Cowling E.J., Steele J.R., Is lower limb muscle synchrony during landing affected by gender? 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Clin Biomech, 20, pp. 254-263, (2005)","S.C. Landry; Dalhousie University, Halifax, NS, 5981 University Avenue, Canada; email: landrys@dal.ca","","","15523365","","AJSMD","17921416","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-35649003396" "Alentorn-Geli E.; Myer G.D.; Silvers H.J.; Samitier G.; Romero D.; Lázaro-Haro C.; Cugat R.","Alentorn-Geli, Eduard (26537075700); Myer, Gregory D. (6701852696); Silvers, Holly J. (6602624274); Samitier, Gonzalo (21234240500); Romero, Daniel (26641327300); Lázaro-Haro, Cristina (26537532100); Cugat, Ramón (21233262500)","26537075700; 6701852696; 6602624274; 21234240500; 26641327300; 26537532100; 21233262500","Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: Mechanisms of injury and underlying risk factors","2009","Knee Surgery, Sports Traumatology, Arthroscopy","17","7","","705","729","24","645","10.1007/s00167-009-0813-1","https://www.scopus.com/inward/record.uri?eid=2-s2.0-67650998833&doi=10.1007%2fs00167-009-0813-1&partnerID=40&md5=02f5b8064bfab77980c1f8f12441b218","Artroscopia G.C., Hospital Quirón, Barcelona, Spain; Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Rocky Mountain University of Health Professions, Provo, UT, United States; Santa Monica Orthopaedic Sports Medicine/Research Foundation, Santa Monica, CA, United States; Physical Therapy School, Blanquerna University, Barcelona, Spain; Dr. Ramon Cugat's Office, Hospital Quirón, 08023, Barcelona, Plaza Alfonso Comín 5-7, Spain","Alentorn-Geli E., Dr. Ramon Cugat's Office, Hospital Quirón, 08023, Barcelona, Plaza Alfonso Comín 5-7, Spain; Myer G.D., Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Rocky Mountain University of Health Professions, Provo, UT, United States; Silvers H.J., Santa Monica Orthopaedic Sports Medicine/Research Foundation, Santa Monica, CA, United States; Samitier G., Artroscopia G.C., Hospital Quirón, Barcelona, Spain; Romero D., Physical Therapy School, Blanquerna University, Barcelona, Spain; Lázaro-Haro C., Artroscopia G.C., Hospital Quirón, Barcelona, Spain; Cugat R., Artroscopia G.C., Hospital Quirón, Barcelona, Spain","Soccer is the most commonly played sport in the world, with an estimated 265 million active soccer players by 2006. Inherent to this sport is the higher risk of injury to the anterior cruciate ligament (ACL) relative to other sports. ACL injury causes the most time lost from competition in soccer which has influenced a strong research focus to determine the risk factors for injury. This research emphasis has afforded a rapid influx of literature defining potential modifiable and non-modifiable risk factors that increase the risk of injury. The purpose of the current review is to sequence the most recent literature that reports potential mechanisms and risk factors for non-contact ACL injury in soccer players. Most ACL tears in soccer players are non-contact in nature. Common playing situations precluding a non-contact ACL injury include: change of direction or cutting maneuvers combined with deceleration, landing from a jump in or near full extension, and pivoting with knee near full extension and a planted foot. The most common non-contact ACL injury mechanism include a deceleration task with high knee internal extension torque (with or without perturbation) combined with dynamic valgus rotation with the body weight shifted over the injured leg and the plantar surface of the foot fixed flat on the playing surface. Potential extrinsic non-contact ACL injury risk factors include: dry weather and surface, and artificial surface instead of natural grass. Commonly purported intrinsic risk factors include: generalized and specific knee joint laxity, small and narrow intercondylar notch width (ratio of notch width to the diameter and cross sectional area of the ACL), pre-ovulatory phase of menstrual cycle in females not using oral contraceptives, decreased relative (to quadriceps) hamstring strength and recruitment, muscular fatigue by altering neuromuscular control, decreased ""core"" strength and proprioception, low trunk, hip, and knee flexion angles, and high dorsiflexion of the ankle when performing sport tasks, lateral trunk displacement and hip adduction combined with increased knee abduction moments (dynamic knee valgus), and increased hip internal rotation and tibial external rotation with or without foot pronation. The identified mechanisms and risk factors for non-contact ACL injuries have been mainly studied in female soccer players; thus, further research in male players is warranted. Non-contact ACL injuries in soccer players likely has a multi-factorial etiology. The identification of those athletes at increased risk may be a salient first step before designing and implementing specific pre-season and in-season training programs aimed to modify the identified risk factors and to decrease ACL injury rates. Current evidence indicates that this crucial step to prevent ACL injury is the only option to effectively prevent the sequelae of osteoarthritis associated with this traumatic injury. © 2009 Springer-Verlag.","Non-contact ACL injury; Prevention; Soccer","Anterior Cruciate Ligament; Biomechanics; Body Mass Index; Female; Gonadal Steroid Hormones; Humans; Joint Instability; Knee Injuries; Knee Joint; Male; Muscle Fatigue; Risk Factors; Shoes; Soccer; Weather; sex hormone; anterior cruciate ligament; article; biomechanics; body mass; female; histology; human; injury; joint instability; knee; knee injury; male; muscle fatigue; pathophysiology; physiology; risk factor; shoe; sport; weather","Adachi N., Nawata K., Maeta M., Kurozawa Y., Relationship of the menstrual cycle phase to anterior cruciate ligament injuries in teenaged female athletes, Arch Orthop Trauma Surg, 128, pp. 473-478, (2008); Allen M.K., Glasoe W.M., Metrecom measurement of navicular drop in subjects with anterior cruciate ligament injury, J Athl Train, 35, pp. 403-406, (2000); Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. 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Alentorn-Geli; Dr. Ramon Cugat's Office, Hospital Quirón, 08023, Barcelona, Plaza Alfonso Comín 5-7, Spain; email: ealentorngeli@gmail.com","","","14337347","","","19452139","English","Knee Surg. Sports Traumatol. Arthroscopy","Article","Final","","Scopus","2-s2.0-67650998833" "Morgan K.D.; Donnelly C.J.; Reinbolt J.A.","Morgan, Kristin D. (56883768000); Donnelly, Cyril J. (55030392300); Reinbolt, Jeffrey A. (7004072116)","56883768000; 55030392300; 7004072116","Elevated gastrocnemius forces compensate for decreased hamstrings forces during the weight-acceptance phase of single-leg jump landing: Implications for anterior cruciate ligament injury risk","2014","Journal of Biomechanics","47","13","","3295","3302","7","77","10.1016/j.jbiomech.2014.08.016","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84908635441&doi=10.1016%2fj.jbiomech.2014.08.016&partnerID=40&md5=c9491eab6b1b0475160476192960b5b5","Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, TN, United States; School of Sport Science, Exercise and Health, University of Western Australia, Perth, Australia","Morgan K.D., Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, TN, United States; Donnelly C.J., School of Sport Science, Exercise and Health, University of Western Australia, Perth, Australia; Reinbolt J.A., Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, TN, United States","Approximately 320,000 anterior cruciate ligament (ACL) injuries in the United States each year are non-contact injuries, with many occurring during a single-leg jump landing. To reduce ACL injury risk, one option is to improve muscle strength and/or the activation of muscles crossing the knee under elevated external loading. This study's purpose was to characterize the relative force production of the muscles supporting the knee during the weight-acceptance (WA) phase of single-leg jump landing and investigate the gastrocnemii forces compared to the hamstrings forces. Amateur male Western Australian Rules Football players completed a single-leg jump landing protocol and six participants were randomly chosen for further modeling and simulation. A three-dimensional, 14-segment, 37 degree-of-freedom, 92 muscle-tendon actuated model was created for each participant in OpenSim. Computed muscle control was used to generate 12 muscle-driven simulations, 2 trials per participant, of the WA phase of single-leg jump landing. A one-way ANOVA and Tukey post-hoc analysis showed both the quadriceps and gastrocnemii muscle force estimates were significantly greater than the hamstrings (p<0.001). Elevated gastrocnemii forces corresponded with increased joint compression and lower ACL forces. The elevated quadriceps and gastrocnemii forces during landing may represent a generalized muscle strategy to increase knee joint stiffness, protecting the knee and ACL from external knee loading and injury risk. These results contribute to our understanding of how muscle's function during single-leg jump landing and should serve as the foundation for novel muscle-targeted training intervention programs aimed to reduce ACL injuries in sport. © 2014 Elsevier Ltd.","Computed muscle control; Computer simulation; Injury prevention; Knee loading; Musculoskeletal modeling","Anterior Cruciate Ligament; Biomechanical Phenomena; Humans; Knee Injuries; Knee Joint; Leg; Male; Movement; Muscle Strength; Muscle, Skeletal; Quadriceps Muscle; Risk; Soccer; Tendons; Weight-Bearing; Young Adult; Computer simulation; Degrees of freedom (mechanics); Joints (anatomy); Landing; Ligaments; Anterior cruciate ligament injury; Degree of freedom; Injury prevention; Knee joint stiffness; Model and simulation; Muscle controls; Musculoskeletal model; Training intervention; adult; anterior cruciate ligament injury; anthropometric parameters; Article; athlete; body weight; clinical article; computer model; controlled study; correlational study; data analysis software; digital filtering; electromyography; football; gastrocnemius muscle; hamstring; human; joint stiffness; jumping; kinematics; load carrying capacity; male; mathematical computing; mathematical model; motion analysis system; muscle function; muscle isometric contraction; muscle strain; muscle strength; quadriceps femoris muscle; quadriceps tendon; randomized controlled trial; single leg jump landing; sport injury; stress strain relationship; task performance; tendon stress; weight acceptance phase; anterior cruciate ligament; biomechanics; injuries; knee; knee injury; leg; movement (physiology); muscle strength; pathophysiology; physiology; risk; skeletal muscle; soccer; tendon; weight bearing; young adult; Muscle","Arnold A.S., Schwartz M.H., Thelen D.G., Delp S.L., Contributions of muscles to terminal-swing knee motions vary with walking speed, J. 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Biomech., 46, pp. 1913-1920, (2013); Myer G.D., Ford K.R., Hewett T.E., The effects of gender on quadriceps muscle activation strategies during a maneuver that mimics a high ACL injury risk position, J. Electromyogr. Kinesiol, 15, pp. 181-189, (2005); Nyland J., Klein S., Caborn D.N., Lower extremity compensatory neuromuscular an biomechanical adaptations 2 to 11 years after anterior cruciate ligament reconstruction, Arthroscopy, 26, pp. 1212-1225, (2010); O'Connor J.J., Biden E., Bradley J., FitzPatrick D., Young S., Kershaw C., Daniel D.M., Goodfellow J., Knee Ligaments. Structure, Function, Injury and Repair, (1990); Padua D.A., Carcia C.R., Arnold B.L., Granata K.P., Gender differences in leg stiffness and stiffness recruitment strategy during two-legged hopping, J. 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Biomech., 36, pp. 321-328, (2003); Utturkar G.M., Irribarra L.A., Taylor K.A., Spritzer C.E., Taylor D.C., Garrett W.E., DeFrate L.E., The effects of a valgus collapse knee position on in vivo ACL elongation, Ann. Biomed. Eng., 41, pp. 123-130, (2013); Walla D.J., Albright J.P., McAuley E., Martin R.K., Eldridge V., El-Khoury G., Hamstring control and the unstable anterior cruciate ligament-deficient knee, Am. J. Sports Med., 13, pp. 34-39, (1985); Weinhandl J.T., Earl-Boehm J.E., Ebersole K.T., Huddleston W.E., Armstrong B.S., O'Connor K.M., Anticipatory effects on anterior cruciate ligament loading during sidestep cutting, Clin. Biomech. (Bristol, Avon), 28, pp. 655-663, (2013); Wikstrom E.A., Tillman M.D., Schenker S., Borsa P.A., Failed jump landing trials: deficits in neuromuscular control, Scand. J. Med. Sci. 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Res., 25, pp. 593-602, (2007)","","","Elsevier Ltd","00219290","","JBMCB","25218505","English","J. Biomech.","Article","Final","","Scopus","2-s2.0-84908635441" "Pollard C.D.; Sigward S.M.; Powers C.M.","Pollard, Christine D. (7006671942); Sigward, Susan M. (9735729200); Powers, Christopher M. (7103284208)","7006671942; 9735729200; 7103284208","Gender differences in hip joint kinematics and kinetics during side-step cutting maneuver","2007","Clinical Journal of Sport Medicine","17","1","","38","42","4","100","10.1097/JSM.0b013e3180305de8","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33847167732&doi=10.1097%2fJSM.0b013e3180305de8&partnerID=40&md5=f2992a9f24753ac6036f1b279abd945a","Musculoskeletal Biomechanics Research Laboratory, Department of Biokinesiology and Physical Therapy, University of Southern California, CA, United States; Department of Biokinesiology and Physical Therapy, University of Southern California, CHP-155, Los Angeles, CA 90033, 1540 East Alcazar Street, United States","Pollard C.D., Musculoskeletal Biomechanics Research Laboratory, Department of Biokinesiology and Physical Therapy, University of Southern California, CA, United States, Department of Biokinesiology and Physical Therapy, University of Southern California, CHP-155, Los Angeles, CA 90033, 1540 East Alcazar Street, United States; Sigward S.M., Musculoskeletal Biomechanics Research Laboratory, Department of Biokinesiology and Physical Therapy, University of Southern California, CA, United States; Powers C.M., Musculoskeletal Biomechanics Research Laboratory, Department of Biokinesiology and Physical Therapy, University of Southern California, CA, United States","OBJECTIVE: Based on the recent suggestion that proximal hip control may be related to a predisposition to anterior cruciate ligament injury, our purpose was to identify gender differences in hip mechanics between female athletes who previously demonstrated greater knee valgus moments and their male counterparts. DESIGN: Descriptive laboratory study. SETTING: Testing was conducted in a biomechanics research laboratory. PARTICIPANTS: Thirty collegiate soccer players (15 women and 15 men) participated in this study. All subjects were healthy with no current complaints of lower extremity injury. MAIN OUTCOME MEASUREMENTS: Three-dimensional hip joint kinematics and kinetics were collected while subjects performed a side-step cutting maneuver. Gender differences in hip mechanics were compared using independent sample t tests. RESULTS: Compared with male athletes, female athletes demonstrated significantly greater hip internal rotation and decreased hip flexion. In addition, female athletes demonstrated significantly greater hip adductor moments as well as decreased hip extensor moments. CONCLUSION: Overall, it appeared that female athletes moved into greater hip internal rotation and used less sagittal plane hip motion during the early deceleration phase of the cutting maneuver. The findings of this investigation support the premise that altered hip kinematics and kinetics may influence loading at the knee. Future studies are needed to further explore the impact of these differences on knee loading and to ascertain the underlying causes. © 2007 Lippincott Williams & Wilkins, Inc.","Anterior cruciate ligament (ACL); Knee valgus; Proximal control","Adult; Anterior Cruciate Ligament; Biomechanics; Female; Hip Joint; Humans; Kinetics; Male; Movement; Pilot Projects; Sex Factors; Sports; adduction; adult; article; athlete; biomechanics; college; deceleration; female; hip; hip extension; hip flexion; hip internal rotation; human; joint mobility; kinematics; kinetics; knee; laboratory; leg injury; male; normal human; priority journal; range of motion; research; sample; sex difference; side step cutting maneuver; statistical significance; Student t test; task performance; valgus knee","Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. NCAA data and reviewof literature, Am J Sports Med, 23, pp. 694-701, (1995); Griffin L.Y., Agel J., Albohm M.J., Et al., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, J Am Acad Orthop Surg, 8, pp. 141-150, (2000); Boden B., Dean G., Feagin J., Et al., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Olsen O., Myklebust G., Engebretsen L., Et al., Injury mechanisms for anterior cruciate ligament injuries in team handball, Am J Sports Med, 32, pp. 1002-1012, (2004); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, pp. 1745-1750, (2003); Malinzak R.A., Colby S.M., Kirkendal D.T., Et al., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech, 16, pp. 438-445, (2001); McLean S.G., Neal R.J., Myers P.T., Et al., Knee joint kinematics during the sidestep cutting maneuver: Potential for injury in women, Med Sci Sports Exerc, 31, pp. 959-968, (1999); McLean S.G., Lipfert S.W., van den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, pp. 1008-1016, (2004); Pollard C.D., Davis I.M., Hamill J., Influence of gender on hip and knee mechanics during a randomly cued cutting maneuver, Clin Biomech, 19, pp. 1022-1031, (2004); Salci Y., Kentel B.B., Heycan C., Et al., Comparison of landing maneuvers between male and female college volleyball players, Clin Biomech, 19, pp. 622-628, (2004); Sigward S.M., Powers C.M., The Influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clin Biomech, 21, pp. 41-48, (2006); Lephart S.M., Ferris C.M., Riemann B.L., Et al., Gender differences in strength and lower extremity kinematics during landing, Clin Orthop Rel Res, 401, pp. 162-169, (2002); Ferber R., Davis I.M., Williams D.S., Gender differences in lower extremity mechanics during running, Clin Biomech, 18, pp. 350-357, (2003); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes, Am J Sports Med, 33, pp. 492-501, (2005); Markolf K.L., Burchfield D.M., Shapiro M.M., Et al., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, pp. 930-935, (1995); Leetun D.T., Ireland M.L., Wilson J.D., Et al., Core stability measures as risk factors for lower extremity injury in athletes, Med Sci Sports Exerc, 36, pp. 926-934, (2004); Hurd W.J., Chimelewski T.L., Axe M.J., Et al., Differences in normal and perturbed walking kinematics between male and female athletes, Clin Biomech, 19, pp. 465-472, (2004); Neumann D.A., Kinesiology of the Musculoskeletal System. Foundations for Physical Rehabilitation, (2002)","C.D. Pollard; Department of Biokinesiology and Physical Therapy, University of Southern California, CHP-155, Los Angeles, CA 90033, 1540 East Alcazar Street, United States; email: cpollard@usc.edu","","","1050642X","","CJSME","17304004","English","Clin. J. Sport Med.","Article","Final","","Scopus","2-s2.0-33847167732" "Queen R.M.; Haynes B.B.; Hardaker W.M.; Garrett Jr. W.E.","Queen, Robin M. (24503786500); Haynes, Benjamin B. (57210742157); Hardaker, W. Mack (16028300000); Garrett Jr., William E. (7102162248)","24503786500; 57210742157; 16028300000; 7102162248","Forefoot loading during 3 athletic tasks","2007","American Journal of Sports Medicine","35","4","","630","636","6","88","10.1177/0363546506295938","https://www.scopus.com/inward/record.uri?eid=2-s2.0-34250734915&doi=10.1177%2f0363546506295938&partnerID=40&md5=7c5e6513f4e9913a69c8d1c5e96ec366","Michael W. Krzyzewski Human Performance Lab., Sports Medicine Program, Duke University, Durham, NC, United States; Department of Surgery, Duke University, Durham, NC, United States; School of Medicine, Duke University, Durham, NC, United States; Michael W. Krzyzewski Human Performance Lab., 102 Finch Yeager Building, DUMC 3435, Duke University, Durham, NC 27710, United States","Queen R.M., Michael W. Krzyzewski Human Performance Lab., Sports Medicine Program, Duke University, Durham, NC, United States, Department of Surgery, Duke University, Durham, NC, United States, Michael W. Krzyzewski Human Performance Lab., 102 Finch Yeager Building, DUMC 3435, Duke University, Durham, NC 27710, United States; Haynes B.B., Michael W. Krzyzewski Human Performance Lab., Sports Medicine Program, Duke University, Durham, NC, United States; Hardaker W.M., Michael W. Krzyzewski Human Performance Lab., Sports Medicine Program, Duke University, Durham, NC, United States, School of Medicine, Duke University, Durham, NC, United States; Garrett Jr. W.E., Michael W. Krzyzewski Human Performance Lab., Sports Medicine Program, Duke University, Durham, NC, United States, Department of Surgery, Duke University, Durham, NC, United States","Background: Due to the popularity of soccer and the high incidence of injury among soccer players, it is valuable to know the effects of tasks like side cuts, crossover cuts, and forward acceleration on the foot. Purpose: To determine the differences in forefoot loading during three different athletic tasks. Study Design: Descriptive laboratory study. Methods: Thirty-six subjects (17 women and 19 men) were tested. Subjects ran a slalom-style agility course 5 times while plantar pressure data was collected at 100 Hz. Plantar pressure was recorded under both feet; however, a right-foot contact was used in the analysis of the side-cut task, a left-foot plant was used in the analysis of the crossover cut, and an average of the 3 steps of acceleration were used in the analysis. The peak pressure, contact area, and contact time for the entire foot were compared between the 3 tasks. The force and the force-time integral were obtained during 5 trials for each of the 3 tasks. The foot was divided into 8 masked regions, which were used to determine the loading patterns specifically in the forefoot. Each variable was analyzed using a 1 x 3 analysis of variance to determine differences between the three movement tasks in the forefoot region (a =.05). Results: Significant differences in peak pressure, contact area, and contact time existed between the movement tasks when examining the entire foot. In addition, significant differences in the force-time integral and peak pressure in the forefoot existed between the movement tasks. The force-time integral was highest during the side cut in the medial forefoot, hallux, and the lesser toes, while the force-time integral was highest during the crossover cut in the middle forefoot and the lateral forefoot. Similarly, the peak pressure was highest during the side cut in the medial forefoot, hallux, and the lesser toes, while peak pressure was highest in the middle forefoot during the acceleration task and highest in the lateral forefoot during the crossover-cutting task. Conclusions: The results of this study demonstrated that the crossover cut places an increased load on the lateral portion of the forefoot, while the side-cut task places an increased load on the medial portion of the forefoot and the acceleration task places increased load on the middle forefoot. Clinical Relevance: The differences in loading patterns based on athletic task are important for understanding potential injury mechanisms. In addition, this information could be important for defining a return to play protocol for athletes who have had specific injuries. © 2007 American Orthopaedic Society for Sports Medicine.","Crossover cut; Injuries; Plantar pressure; Side cut; Soccer","Adult; Female; Forefoot, Human; Humans; Male; Movement; Prospective Studies; Soccer; Sports; Weight-Bearing; acceleration; adult; agility; analysis of variance; article; athlete; biomechanics; comparative study; comprehension; female; foot; force; forefoot; hallux; human; information; information processing; laboratory test; male; motion; plantaris muscle; pressure; priority journal; running; toe","Chen H., Nigg B., De Koning J., Relationship between plantar pressure distribution under the foot and insole comfort, Clin Biomech, 9, pp. 335-341, (1994); Eils E., Streyl M., Linnenbecker S., Thorwesten L., Volker K., Rosenbaum D., Characteristic plantar pressure distribution patterns during soccer-specific movements, Am J Sports Med., 32, pp. 140-145, (2004); Ekstrand J., Nigg B., Surface-related injuries in soccer, Sports Med., 8, pp. 56-62, (1989); Giza E., Fuller C., Junge A., Dvorak J., Mechanisms of foot and ankle injuries in soccer, Am J Sports Med., 31, pp. 550-554, (2003); Giza E., Micheli L.J., Soccer injuries, Med Sci Sports Exerc., 49, pp. 140-169, (2005); Grampp J., Willson J., Kernozek T., The plantar loading variations to uphill and downhill gradients during treadmill walking, Foot Ankle Int., 21, pp. 227-231, (2000); Henning E., Milani T., In-shoe pressure distribution for running in various footwear, J Appl Biomech, 11, pp. 299-310, (1995); Inklaar H., Soccer injuries. II: Aetiology and prevention, Sports Med., 18, pp. 81-93, (1994); Iwamoto J., Takeda T., Stress fractures in athletes: A review of 196 cases. J Orthop, Sci., 8, pp. 273-278, (2003); Knapp T., Mandelbaum B., Garrett W., Why are stress injuries so common in soccer players?, Clin Sports Med., 17, pp. 835-853, (1998); Mueller M., Application of plantar pressure assessment in footwear and insert design, J Orthop Sports Phys Ther., 29, pp. 747-755, (2002); Rosenbaum D., Hautmann S., Gold M., Claes L., Effects of walking speed on pressure distribution patterns and hindfoot angular motion, Gait Posture, 2, pp. 191-197, (1994); Santos D., Carline T., Flynn L., Distribution of in-shoe dynamic foot pressures in professional football players. the, Foot, 11, pp. 10-14, (2001); Urry S., Redistribution of foot pressure in healthy adults during side-slope walking, Foot Ankle Int., 23, pp. 1112-1118, (2002); Willson J., Kernozek T., Plantar loading and cadence alterations with fatigue, Med Sci Sports Exerc., 31, pp. 1828-1833, (1999); Wright R., Fischer D., Shively R., Heidt Jr. R.S., Nuber G.W., Refracture of proximal fifth metatarsal (Jones) fracture after intramedullary screw fixation in athletes, Am J Sports Med., 28, pp. 732-736, (2000)","R.M. Queen; Michael W. Krzyzewski Human Performance Lab., 102 Finch Yeager Building, DUMC 3435, Duke University, Durham, NC 27710, United States; email: robin.queen@duke.edu","","","15523365","","AJSMD","17218653","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-34250734915" "Sigward S.M.; Cesar G.M.; Havens K.L.","Sigward, Susan M. (9735729200); Cesar, Guilherme M. (15021964300); Havens, Kathryn L. (54581068700)","9735729200; 15021964300; 54581068700","Predictors of frontal plane knee moments during side-step cutting to 45 and 110 degrees in men and women: Implications for anterior cruciate ligament injury","2015","Clinical Journal of Sport Medicine","25","6","","529","534","5","79","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946567162&partnerID=40&md5=1ac8ae29a660080e447fb06ff6feeda7","Human Performance Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 East Alcazar St., CHP-155, Los Angeles, 90033, CA, United States","Sigward S.M., Human Performance Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 East Alcazar St., CHP-155, Los Angeles, 90033, CA, United States; Cesar G.M., Human Performance Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 East Alcazar St., CHP-155, Los Angeles, 90033, CA, United States; Havens K.L., Human Performance Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 East Alcazar St., CHP-155, Los Angeles, 90033, CA, United States","Objective: To compare frontal plane knee moments, and kinematics and kinetics associated with knee valgus moments between cutting to 45 and 110 degrees, and to determine the predictive value of kinematics and ground reaction forces (GRFs) on knee valgus moments when cutting to these angles. Also, to determine whether sex differences exist in kinematics and kinetics when cutting to 45 and 110 degrees. Design: Cross-sectional study. Setting: Laboratory setting. Participants: Forty-five (20 females) healthy young adult soccer athletes aged 16 to 23 years. Assessment of Risk Factors: Kinematic and kinetic variables were compared between randomly cued side-step cutting maneuvers to 45 and 110 degrees. Predictors of knee valgus moment were determined for each task. Main Outcome Measures: Kinematic variables: knee valgus angle, hip abduction, and internal rotation angles. Kinetic variables: vertical, posterior, and lateral GRFs, and knee valgus moment. Results: Knee valgus moments were greater when cutting to 110 degrees compared with 45 degrees, and females exhibited greater moments than males. Vertical and lateral GRFs, hip internal rotation angle, and knee valgus angle explained 63% of the variance in knee valgus moment during cutting to 45 degrees. During cutting to 110 degrees, posterior GRF, hip internal rotation angle, and knee valgus angle explained 41% of the variance in knee valgus moment. Conclusions: Cutting tasks with larger redirection demands result in greater knee valgus moments. Similar factors, including shear GRFs, hip internal rotation, and knee valgus position contribute to knee valgus loading during cuts performed to smaller (45 degrees) and larger (110 degrees) angles. Clinical Relevance: Reducing vertical and shear GRFs during cutting maneuvers may reduce knee valgus moments and thereby potentially reduce risk for anterior cruciate ligament injury. Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved.","Anterior cruciate ligament injury; Cutting maneuver; Sex differences; Soccer","Adolescent; Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Cross-Sectional Studies; Female; Forecasting; Humans; Knee Injuries; Knee Joint; Male; Movement; Range of Motion, Articular; Sex Factors; Soccer; Soft Tissue Injuries; Young Adult; abduction; adolescent; adult; anterior cruciate ligament injury; Article; athlete; biomechanics; clinical article; controlled study; cross-sectional study; female; ground reaction force; human; joint mobility; kinematics; kinetics; knee function; male; priority journal; risk assessment; soccer; valgus knee; forecasting; injuries; joint characteristics and functions; knee; Knee Injuries; movement (physiology); physiology; sex difference; Soft Tissue Injuries; young adult","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A 13-year review, Am J Sports Med., 33, pp. 524-530, (2005); Messina D.F., Farney W.C., De Lee J.C., The incidence of injury in Texas high school basketball. A prospective study among male and female athletes, Am J Sports Med., 27, pp. 294-299, (1999); Myklebust G., Maehlum S., Holm I., Et al., A prospective cohort study of anterior cruciate ligament injuries in elite Norwegian team handball, Scand J Med Sci Sports., 8, pp. 149-153, (1998); Malinzak R.A., Colby S.M., Kirkendall D.T., Et al., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech (Bristol, Avon), 16, pp. 438-445, (2001); McLean S.G., Lipfert S.W., Van Den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc., 36, pp. 1008-1016, (2004); Chappell J.D., Yu B., Kirkendall D.T., Et al., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am J Sports Med., 30, pp. 261-267, (2002); McLean S.G., Huang X., Van Den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clin Biomech (Bristol, Avon), 20, pp. 863-870, (2005); Sigward S.M., Powers C.M., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clin Biomech (Bristol, Avon), 21, pp. 41-48, (2006); Yu B., Lin C.F., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clin Biomech (Bristol, Avon), 21, pp. 297-305, (2006); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med., 33, pp. 492-501, (2005); Boden B.P., Dean G.S., Feagin J.A., Et al., Mechanisms of anterior cruciate ligament injury, Orthopedics., 23, pp. 573-578, (2000); McNair P.J., Marshall R.N., Matheson J.A., Important features associated with acute anterior cruciate ligament injury, N z Med J., 103, pp. 537-539, (1990); Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in FA Premier League soccer, J Sports Sci Med., 6, pp. 63-70, (2007); Besier T.F., Lloyd D.G., Cochrane J.L., Et al., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc., 33, pp. 1168-1175, (2001); Sigward S.M., Powers C.M., Loading characteristics of females exhibiting excessive valgus moments during cutting, Clin Biomech (Bristol, Avon), 22, pp. 827-833, (2007); Sigward S.M., Pollard C.D., Havens K.L., Et al., The influence of sex and maturation on knee mechanics during side-step cutting, Med Sci Sports Exerc., 44, pp. 1497-1503, (2012); Bale P., Mayhew J.L., Piper F.C., Et al., Biological and performance variables in relation to age in male and female adolescent athletes, J Sports Med Phys Fitness., 32, pp. 142-148, (1992); Schlossberger N.M., Turner R.A., Irwin C.E., Validity of self-report of pubertal maturation in early adolescents, J Adolesc Health., 13, pp. 109-113, (1992); Schmitz K.E., Hovell M.F., Nichols J.F., Et al., A validation study of early adolescents' pubertal self-assessments, J Early Adolesc., 24, pp. 357-384, (2004); Davies P.L., Rose J.D., Motor skills of typically developing adolescents: Awkwardness or improvement?, Phys Occup Ther Pediatr., 20, pp. 19-42, (2000); Sigward S.M., Pollard C.D., Powers C.M., The influence of sex and maturation on landing biomechanics: Implications for anterior cruciate ligament injury, Scand J Med Sci Sports., 22, pp. 502-509, (2012); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, J Biomech Eng., 105, pp. 136-144, (1983); Bresler B., Frankel J., The forces and moments in the leg during level walking, Trans ASME., 72, pp. 27-36, (1950); Besier T.F., Lloyd D.G., Ackland T.R., Et al., Anticipatory effects on knee joint loading during running and cutting maneuvers, Med Sci Sports Exerc., 33, pp. 1176-1181, (2001); Glaister B.C., Orendurff M.S., Schoen J.A., Et al., Rotating horizontal ground reaction forces to the body path of progression, J Biomech., 40, pp. 3527-3532, (2007)","S.M. Sigward; Human Performance Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, 1540 East Alcazar St., CHP-155, 90033, United States; email: sigward@usc.edu","","Lippincott Williams and Wilkins","1050642X","","CJSME","25290102","English","Clin. J. Sport Med.","Article","Final","","Scopus","2-s2.0-84946567162" "Tessitore A.; Meeusen R.; Piacentini M.F.; Demarie S.; Capranica L.","Tessitore, A. (57208901838); Meeusen, R. (7003420352); Piacentini, M.F. (7102256134); Demarie, S. (6601937789); Capranica, L. (6602437320)","57208901838; 7003420352; 7102256134; 6601937789; 6602437320","Physiological and technical aspects of ""6-a-side"" soccer drills","2006","Journal of Sports Medicine and Physical Fitness","46","1","","36","43","7","72","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33646684056&partnerID=40&md5=61421719ca9ca6c424ac468076da3da3","Department of Human Movement and Sport Sciences, IUSM of Rome, Rome, Italy; Department of Human Physiology and Sports Medicine, Vrije Universiteit Brussel (VUB), Brussels, Belgium; IUSM of Rome, I-00194 Rome, P.zza L. De Bosis 15, Italy","Tessitore A., Department of Human Movement and Sport Sciences, IUSM of Rome, Rome, Italy, Department of Human Physiology and Sports Medicine, Vrije Universiteit Brussel (VUB), Brussels, Belgium; Meeusen R., Department of Human Physiology and Sports Medicine, Vrije Universiteit Brussel (VUB), Brussels, Belgium; Piacentini M.F., Department of Human Movement and Sport Sciences, IUSM of Rome, Rome, Italy; Demarie S., Department of Human Movement and Sport Sciences, IUSM of Rome, Rome, Italy; Capranica L., Department of Human Movement and Sport Sciences, IUSM of Rome, Rome, Italy, IUSM of Rome, I-00194 Rome, P.zza L. De Bosis 15, Italy","Aim. The purposes of the present study were: 1) to evaluate heart rate and technical-tactical differences, if any, during ""6-a-side"" drills, played on 2 pitch dimensions (30×40 m and 50×40 m) and duration (3 min and 8 min); 2) to assess the variability of data between repeated experimental sessions; 3) to evaluate training intensities from heart rate at lactate threshold. Methods. Laboratory measurements of maximal oxygen consumptions, maximum heart rates and lactate thresholds were performed on 9 soccer players who played at Regional level. For test and retest field sessions, the exercise intensities were calculated from heart rate monitoring and match analysis (number of actions, consecutive passes, players involved in a single action) was performed. Results. No significant differences were found in heart rate frequency distributions between test and retest sessions. Statistically significant differences in frequency distributions of heart rate were found only between the 3 min and 8 min drills played on the 40×50 m pitch. Regarding exercise intensity, significant differences (P<0.01) were found for pitch dimension, with higher intensities shown during the 30×40 m pitch trials. When technical data were related to time units, no differences were found among experimental settings. Conclusion. These data indicate that coaches could better modulate the training intensity by varying the pitch dimension, with the smaller individual playing area (30×40 m) having a large impact on the metabolic demands of exercise.","Blood lactate; Heart rate; Match analysis; Soccer drills","Adult; Exertion; Heart Rate; Humans; Lactic Acid; Soccer; lactic acid; article; athlete; biomechanics; controlled study; exercise; exercise intensity; exercise test; heart rate; human; laboratory test; lactate blood level; oxygen consumption; sport; sports medicine; training","Reilly T., Thomas V., A motion analysis of work-rate in different positional roles in professional football match-play, J Hum Mov Stud, 2, pp. 87-97, (1976); Ekblom B., Handbook of Sports Medicine and Science: Football (Soccer), (1994); Van Gool D., Van Gerven D., Boutmans V., The Physiological Load Imposed on Soccer Players during Real Match-play, (1988); Ali A., Farrally M., Recording soccer players' heart rates during matches, J Sports Sci, 9, pp. 183-189, (1991); Bangsbo J., Norregaard L., Thorso F., Activity profile of competition soccer, Can J Sport Sci, 16, pp. 110-116, (1991); Smith M., Clarke G., Hale T., McMorrihe T., Blood lactate levels in college soccer players during match-play, Science and Football II, pp. 129-134, (1993); Bangsbo J., Fitness Training in Football: A Scientific Approach, (1994); Reilly T., Assessment of sports performance with particular reference to field games, Eur J Sport Sci, 3, (2001); Capranica L., Tessitore A., Guidetti L., Figura F., Heart rate and match analysis in pre-pubescent soccer players, J Sports Sci, 19, pp. 379-384, (2001); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, J Sports Sci, 21, pp. 519-528, (2003); Reilly T., Energetics of high-intensity exercise (soccer) with particular reference to fatigue, J Sports Sci, 15, pp. 257-263, (1997); Ferrario V.F., Sforza C., Dugnani S., Michielon G., Mauro F., Morphological variation analysis of the repeatability of soccer offensive schemes, J Sports Sci, 17, pp. 89-95, (1999); Hughes M.D., Bartlett R.M., The use of performance indicators in performance analysis, J Sports Sci, 20, pp. 739-754, (2002); Atkinson G., Nevill A.M., Selected issues in the design and analysis of sport performance research, J Sports Sci, 19, pp. 811-827, (2001); Hoff J., Wisloff U., Engen L.C., Kemi O.J., Helgerud J., Soccer specific aerobic endurance training, Br J Sports Med, 36, pp. 218-221, (2002); Aroso J., Rebelo N., Gomes-Pereira J., Physiological impact of selected game-related exercises, Book of Abstract. 5th Congress on Science and Football, (2003); Castagna C., Belardinelli R., Abt G., The VO2 and heart rate response to training with a ball in youth soccer players, Book of Abstract. 5th Congress on Science and Football, pp. 42-43, (2003); Rampini E., Sassi A., Impellizzeri F.M., Reliability of heart rate recorded during soccer training, Book of Abstract. 5th Congress on Science and Football, pp. 175-176, (2003); The recommended quantity and quality of exercise for developing and maintaining cardiorespiratory and muscular fitness, and flexibility in healthy adults, Med Sci Sports Exerc, 30, pp. 975-991, (1998); Hofmann P., Von Duvillard S.P., Seibert F.J., Pokan R., Wonisch M., Lemura L.M., Et al., %HRmax target heart rate is dependent on heart rate performance curve deflection, Med Sci Sports Exerc, 33, pp. 1726-1731, (2001); Bot S.D.M., Hollander A.P., The relationship between heart rate and oxygen uptake during non-steady state exercise, Ergonomics, 43, pp. 1578-1592, (2000); Hollmann W., Rost R., Liesen H., Dufaux B., Heck H., Mader A., Assessment of different forms of physical activity with respect to preventive and rehabilitative cardiology, Int J Sports Med, 2, pp. 67-80, (1981); Weltman A., The Blood Lactate Response to Exercise, (1995); Reilly T., Fitness assessment, Science and Soccer, pp. 25-50, (1996); Karvonen J.J., Kentala E., Mustalo O., The effects of training on heart rate, Ann Med Exp Biol Fenn, 33, pp. 307-315, (1957); Baldari C., Guidetti L., A simple method for individual anaerobic threshold as predictor of max lactate steady state, Med Sci Sports Exerc, 32, pp. 1798-1802, (2000); Heck H., Mader A., Hess G., Mucke S., Muller R., Hollmann W., Justification of the 4-mmo1/1 lactate threshold, Int J Sports Med, 6, pp. 117-130, (1985); Metra M., Raddino R., Dei Cas L., Visioli O., Assessment of peak oxygen consumption, lactate and ventilatory thresholds and correlation with resting and exercise hemodynamic data in chronic congestive heart failure, Am J Cardiol, 65, pp. 1127-1133, (1990); Fell J.W., Rayfield J.M., Gulbin J.P., Gaffney P.T., Evaluation of the Accusport Lactate Analyser, Int J Sports Med, 19, pp. 199-204, (1998); Bate R., Football chance: Tactics and strategy, Science and Football, pp. 293-301, (1988); Bland J.M., Altman D.G., Statistical methods for assessing agreement between two methods of clinical measurements, Lancet, 1, pp. 307-310, (1986); Drust B., Reilly T., Cable N.T., Physiological responses to laboratory-based soccer-specific intermittent and continuous exercise, J Sports Sci, 18, pp. 885-892, (2000); Bangsbo J., Krustrup P., Mohr M., Physical capacity of high level soccer players in relation to playing position, Book of Abstract. 5th Congress on Science and Football, (2003); Komi P.V., Karlson J., Physical performance, skeletal muscle enzyme activities, and fiber types in monozygous and dizygous twins of both sexes, Acta Physiol Scand, 462, SUPPL., pp. 1-28, (1979); Farrell P.A., Wilmore J.H., Coyle E.F., Billing J.E., Costill D.L., Plasma lactate accumulation and distance running performance, Med Sci Sports, 11, pp. 338-344, (1979); Fohrenbach R., Mader A., Hollmann W., Determination of endurance capacity and prediction of exercise intensities for training and competition in marathon runners, Int J Sports Med, 8, pp. 11-18, (1987); Int J Sports Med, 8, (1987); Lacour J.R., Bouvat E., Barthelemy J.C., Post-competition blood lactate concentrations as indicators of anaerobic energy expenditure during 400-m and 800-m races, Eur J Appl Physiol Occup Physiol, 61, pp. 172-176, (1990); Roi G.S., Sisca G., Perondi F., Diamante A., Nanni G., Post-competition blood lactate accumulation during a first league soccer season, Book of Abstract. 5th Congress on Science and Football, (2003); Brooks G.A., Current concepts in lactate exchange, Med Sci Sports Exerc, 23, pp. 895-906, (1991); Freund H., Lonsdorfer J., Oyono-Enguelle S., Lonsdorfer A., Bogui P., Lactate exchange and removal abilities in sickle cell patients and in untrained and trained healthy humans, J Appl Physiol, 73, pp. 2580-2587, (1992)","L. Capranica; IUSM of Rome, I-00194 Rome, P.zza L. De Bosis 15, Italy; email: laura.capranica@iusm.it","","","00224707","","JMPFA","16596097","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-33646684056" "Chappell J.D.; Limpisvasti O.","Chappell, Jonathan D. (35611193500); Limpisvasti, Orr (6506957827)","35611193500; 6506957827","Effect of a neuromuscular training program on the kinetics and kinematics of jumping tasks","2008","American Journal of Sports Medicine","36","6","","1081","1086","5","184","10.1177/0363546508314425","https://www.scopus.com/inward/record.uri?eid=2-s2.0-44049104357&doi=10.1177%2f0363546508314425&partnerID=40&md5=a4c06dfebe88d22968d776553239ca54","Wake Orthopaedics, Raleigh, NC, United States; Centinela Freeman Hospital Biomechanics Laboratory, Los Angeles, CA, United States; Kerlan Jobe Orthopaedic Clinic, Los Angeles, CA, United States; Raleigh, NC 27603, 701 West Lane St #102, United States","Chappell J.D., Wake Orthopaedics, Raleigh, NC, United States, Centinela Freeman Hospital Biomechanics Laboratory, Los Angeles, CA, United States, Raleigh, NC 27603, 701 West Lane St #102, United States; Limpisvasti O., Centinela Freeman Hospital Biomechanics Laboratory, Los Angeles, CA, United States, Kerlan Jobe Orthopaedic Clinic, Los Angeles, CA, United States","Background: Altered motor control strategies are a proposed cause of the female athlete's increased risk for noncontact anterior cruciate ligament injury. Injury prevention programs have shown promising results in decreasing the incidence of anterior cruciate ligament injury. Purpose: To evaluate the effect of the Kerlan-Jobe Orthopaedic Clinic Modified Neuromuscular Training Program on the biomechanics of select jumping tasks in the female collegiate athlete. Study Design: Controlled laboratory study. Methods: Thirty female National Collegiate Athletic Association Division I soccer and basketball players performed vertical jump, hopping tests, and 2 jumping tasks (drop jump and stop jump). All subjects completed a 6-week neuromuscular training program with core strengthening and plyometric training. Three-dimensional motion analysis and force plate data were used to compare the kinetics and kinematics of jumping tasks before and after training. Results: Dynamic knee valgus moment during the stance phase of stop jump tasks decreased after completion of the neuromuscular training program (P =.04), but differences were not observed for the drop jump. Initial knee flexion (P =.003) and maximum knee flexion (P =.006) angles increased during the stance phase of drop jumps after training, but differences were not observed for the stop jump. The athletes showed improved performance in vertical jump ( P <.001), right 1-legged hop (P <.001), and left 1-legged hop (P <.001). Conclusion: Completion of a 6-week neuromuscular training program improved select athletic performance measures and changed movement patterns during jumping tasks in the subject population. Clinical Relevance: The use of this neuromuscular training program could potentially modify the collegiate athlete's motion strategies, improve performance, and lower the athlete's risk for injury. © 2008 American Orthopaedic Society for Sports Medicine.","Anterior cruciate ligament (ACL); Biomechanics; Female athletes; Injury prevention programs","Adolescent; Adult; Athletic Injuries; Basketball; Biomechanics; Exercise Therapy; Female; Humans; Knee Joint; Movement; Soccer; accident prevention; adult; anterior cruciate ligament; article; athlete; basketball; biomechanics; clinical article; controlled study; female; human; jumping; kinematics; kinetics; knee function; motion analysis system; muscle force; muscle strength; muscle training; plyometrics; priority journal; sport; standing; statistical significance; task performance; valgus knee","Ageberg E., Zatterstrom R., Moritz U., Friden T., Influence of supervised and nonsupervised training on postural control after an acute anterior cruciate ligament rupture: A three-year longitudinal prospective study, J Orthop Sports Phys Ther, 31, pp. 632-644, (2001); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Med Sci Sports Exerc, 35, pp. 119-127, (2003); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1168-1175, (2001); Boden B.P., Dean G.S., Feagin Jr. J.A., Garrett Jr. W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Caraffa A., Cerulli G., Projetti M., Aisa G., Rizzo A., Prevention of anterior cruciate ligament injuries in soccer: A prospective controlled study of proprioceptive training, Knee Surg Sports Traumatol Arthrosc, 4, pp. 19-21, (1996); Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am J Sports Med, 30, pp. 261-267, (2002); Dufek J.S., Bates B.T., Biomechanical factors associated with injury during landing in jumping sports, Sports Med, 12, pp. 326-337, (1991); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, pp. 1745-1750, (2003); Fukuda Y., Woo S.L., Loh J.C., A quantitative analysis of valgus torque on the ACL: A human cadaveric study, J Orthop Res, 21, pp. 1107-1112, (2003); Gilchrist J.R., Mandelbaum B.R., Melancon H., A randomized controlled trial to prevent non-contact ACL injury in female collegiate soccer players, Am J Sports Med, (2008); Heidt Jr. R.S., Sweeterman L.M., Carlonas R.L., Traub J.A., Tekulve F.X., Avoidance of soccer injuries with preseason conditioning, Am J Sports Med, 28, pp. 659-662, (2000); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes: A prospective study, Am J Sports Med, 27, pp. 699-706, (1999); Hewett T.E., Myer G.D., Ford K.R., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Hewett T.E., Paterno M.V., Myer G.D., Strategies for enhancing proprioceptive and neuromuscular control of the knee, Clin Orthop Relat Res, 402, pp. 76-94, (2002); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes: Decreased impact forces and increased hamstring torques, Am J Sports Med, 24, pp. 765-773, (1996); Lloyd D.G., Rationale for training programs to reduce anterior cruciate ligament injuries in, Australian Football. J Orthop Sports Phys Ther, 31, pp. 645-654, (2001); Lloyd D.G., Buchanan T.S., Strategies of muscular support of varus and valgus isometric loads at the human knee, J Biomech, 34, pp. 1257-1267, (2001); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes: 2-year follow-up, Am J Sports Med, 33, pp. 1003-1010, (2005); Myer G.D., Ford K.R., McLean S.G., Hewett T.E., The effects of plyometric versus dynamic stabilization and balance training on lower extremity biomechanics, Am J Sports Med, 34, pp. 445-455, (2006); Myklebust G., Engebretsen L., Braekken I.H., Skjolberg A., Olsen O.E., Bahr R., Prevention of anterior cruciate ligament injuries in female team handball players: A prospective intervention study over three seasons, Clin J Sport Med, 13, pp. 71-78, (2003); Paterno M.V., Myer G.D., Ford K.R., Hewett T.E., Neuromuscular training improves single-limb stability in young female athletes, J Orthop Sports Phys Ther, 34, pp. 305-316, (2004); Petersen W., Braun C., Bock W., A controlled prospective case control study of a prevention training program in female team handball players: The German experience, Arch Orthop Trauma Surg, 125, 9, pp. 614-621, (2005); Soderman K., Werner S., Pietila T., Engstrom B., Alfredson H., Balance board training: Prevention of traumatic injuries of the lower extremities in female soccer players, A Prospective Randomized Intervention Study. Knee Surg Sports Traumatol Arthrosc, 8, pp. 356-363, (2000); Wojtys E.M., Ashton-Miller J.A., Huston L.J., A gender-related difference in the contribution of the knee musculature to sagittal-plane shear stiffness in subjects with similar knee laxity, J Bone Joint Surg Am, 84, pp. 10-16, (2002)","J. D. Chappell; Raleigh, NC 27603, 701 West Lane St #102, United States; email: jonathanchappell@hotmail.com","","","15523365","","AJSMD","18359820","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-44049104357" "Stacoff A.; Steger J.; Stussi E.; Reinschmidt C.","Stacoff, A. (56617468300); Steger, J. (7005217169); Stussi, E. (7006606223); Reinschmidt, C. (6602755135)","56617468300; 7005217169; 7006606223; 6602755135","Lateral stability in sideward cutting movements","1996","Medicine and Science in Sports and Exercise","28","3","","350","358","8","110","10.1097/00005768-199603000-00010","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0029916391&doi=10.1097%2f00005768-199603000-00010&partnerID=40&md5=c9b3c24a31660a66e9d53a536d5d4b58","Biomechanics Laboratory, Swiss Federal Inst. of Technology, CH-8952 Schlieren, Wegistrasse 4 (SWU), Switzerland","Stacoff A., Biomechanics Laboratory, Swiss Federal Inst. of Technology, CH-8952 Schlieren, Wegistrasse 4 (SWU), Switzerland; Steger J., Biomechanics Laboratory, Swiss Federal Inst. of Technology, CH-8952 Schlieren, Wegistrasse 4 (SWU), Switzerland; Stussi E., Biomechanics Laboratory, Swiss Federal Inst. of Technology, CH-8952 Schlieren, Wegistrasse 4 (SWU), Switzerland; Reinschmidt C., Biomechanics Laboratory, Swiss Federal Inst. of Technology, CH-8952 Schlieren, Wegistrasse 4 (SWU), Switzerland","Sideward cutting movements occur frequently in sports activities, such as basketball, soccer, and tennis. These activities show a high incidence of injuries to the lateral aspect of the ankle. Consequently, the lateral stability of sport shoes seems important. The purpose of this study was to show the effect of different shoe sole properties (hardness, thickness, torsional stiffness) and designs on the lateral stability during sideward cutting movements. A film analysis was conducted including 12 subjects performing a cutting movement barefoot and with five different pairs of shoes each filmed in the frontal plane. A standard film analysis was conducted; for the statistical analysis, various parameters such as the range of motion in inversion and the angular velocity of the rearfoot were used. The results showed a large difference between the barefoot and shod conditions with respect to the lateral stability. Two shoes performed significantly better (P < 0.05) than the others with a decreased inversion movement and less slipping inside the shoe. The two shoes differed mainly in the shoe sole design (hollow inner core) and the upper (high-cut). It is concluded that lateral stability may be improved by altering the properties and design of the shoe sole as well as the upper.","ANKLE JOINT; ANKLE SPRAIN; INVERSION; REARFOOT MOVEMENT; SHOE DESIGN; SPORTS INJURIES; SUPINATION","Adult; Ankle Injuries; Ankle Joint; Athletic Injuries; Biomechanics; Equipment Design; Humans; Male; Running; Shoes; adult; ankle; ankle sprain; article; biomechanics; body posture; controlled study; human; human experiment; joint mobility; joint stability; male; normal human; shoe; sport injury","Areblad M., Nigg B.M., Ekstrand J., Olsson K.O., Ekstroem H., Three dimensional measurement of rearfoot motion during running, J. Biomech., 23, pp. 933-940, (1990); Bunch R.P., Bednarski K., Holland D., Ankle joint support: A comparison of reusable Iace-on braces with taping and wrapping, Physician Sportsmed., 13, pp. 59-62, (1985); Ekstrand J., Tropp H., The incidence of ankle sprains in soccer, Foot Ankle, 11, pp. 41-44, (1990); Garrick J.G., The frequency of injury, mechanism of injury, and epidemiology of ankle sprains, Am. J. Sports Med., 5, pp. 241-242, (1977); Karlsson J., Peterson L., Andreasson G., Hogfors C., The unstable ankle: A combined EMG and biomechanical modeling study, Int. J. Sports Biomech., 8, pp. 129-144, (1992); Konradsen L., Bohsen Ravn J., Prolonged peroneal reaction time in ankle instability, Int. J. Sports Med., 12, pp. 290-292, (1991); Krabbe B., Farkas R., Baumann W., Die Belastung des oberen Sprunggelenkes bei tennisspezifischen Bewegungsformen, Sportverletzungen, Sportschaden, 6, pp. 50-57, (1992); Laughman R.K., Carr T.A., Chao E.Y., Youdas J.W., Sim F.H., Three dimensional kinematics of the taped ankle before and after exercise, Am. J. Sports Med., 8, 6, (1980); Leidinger A., Gast W., Pforringer W., Traumatologie im Hallenhandballsport, Sportverletzung, Sportschaden, 4, pp. 65-68, (1990); Luthi S.M., Frederick E.C., Hawes M.R., Nigg B.M., Influence of shoe construction on lower extremity kinematics and load during lateral movements in tennis, Int. J. Sports Biomech., 2, pp. 166-174, (1986); Injury Surveillance System; Nigg B.M., Luthi S., Bahlsen A., The tennis shoe: Biomechanical design criteria, The Shoe in Sport, pp. 39-46, (1989); Nigg B.M., Segesser B., Biomechanical and orthopedic concepts in sport shoe construction, Med. Sci. Sports Exerc., 24, 5, pp. 595-602, (1992); Petrov O., Blocher K., Bradbury R.L., Saxena A., Toy M.L., Footwear and ankle stability in the basketball player, Sel. Topics Med. Surg., 275, (1988); Pfeifer J.P., Gast W., Pforringer W., Traumatologie und Sportschaden im Basketballsport, Sportverletzungen, Sportschaden, 6, pp. 91-100, (1992); Reinschmidt C., Stacoff A., Stussi E., Heel movement within a court shoe, Med. Sci. Sports Exerc., 24, 12, pp. 1390-1395, (1992); Segesslr B., Jenoure P., Feinstein R., Vogt-Sartori S., Wirkung ausserer Stabilisalionshilfen (Tape, Bandage, Stabilschuh) bei fibularer Distorsion, Sonderdruck Orthopädie-Schuhtechnik, 7, pp. 5-24, (1986); Segesser B., Nigg B.M., Orthopädische und biomechanische Konzepte im Sportschuhbau, Sportverletzungen, Sportschaden, 7, pp. 150-162, (1993); Simpson K.J., Shewokis P.A., Alduwaisan S., Reeves K.T., Factors influencing rearfoot kinematics during a rapid lateral breaking movement, Med. Sci. 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Sports Exerc., 24, 6, pp. 695-701, (1992); Stacoff A., Steger J., Stussi E., Die Kontrolle des Rückfusses bei Seitwärtsbewegungen im Sport, Sportverletzungen, Sportschaden, 7, pp. 22-29, (1993); Stacoff A., Steger J., Stussi E., Lateral stability in sideward cutting movements, Proceedings of the XIV ISB Congress, pp. 1278-1279, (1993); Steinbruck K., Epidemiologie von Sportverletzungen, Sportverletzungen, Sportschaden, 1, pp. 2-12, (1987); Stussi E., Stacoff A., Tiegermann V., Rapid sideward movements in tennis, The Shoe in Sport, pp. 53-62, (1989); Stussi E., Tiegermann V., Gerber H., Raemy H., Stacoff A., A biomechanical study of the stabilization effect of the Aircast ankle brace, Biomechanics X, pp. 159-164, (1987); Thonnard J.L., Plaghki L., Willems P., Benoit J.-C., De Nayer J., La pathogénie de l'entorse de la cheville: Test d'une hypothèse, Medica. Physica, 9, pp. 141-146, (1986); Valiant G.A., Friction-slipping-traction, Sportverletzungen, Sportschaden, 7, pp. 171-178, (1993); Van Gheluwe B., Deporte E., Friction measurements in tennis on field and in the laboratory, Int. J. Sports Biomech., 88, pp. 48-61, (1992)","","","","01959131","","MSCSB","8776223","English","MED. SCI. SPORTS EXERC.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-0029916391" "Wu L.C.; Nangia V.; Bui K.; Hammoor B.; Kurt M.; Hernandez F.; Kuo C.; Camarillo D.B.","Wu, Lyndia C. (56050329900); Nangia, Vaibhav (56389424200); Bui, Kevin (56789720400); Hammoor, Bradley (58845535600); Kurt, Mehmet (35102429700); Hernandez, Fidel (56050331700); Kuo, Calvin (7404480701); Camarillo, David B. (6506423628)","56050329900; 56389424200; 56789720400; 58845535600; 35102429700; 56050331700; 7404480701; 6506423628"," In Vivo Evaluation of Wearable Head Impact Sensors","2016","Annals of Biomedical Engineering","44","4","","1234","1245","11","186","10.1007/s10439-015-1423-3","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84939605292&doi=10.1007%2fs10439-015-1423-3&partnerID=40&md5=b683c806dcc67b035ac87515b8451a5f","Department of Bioengineering, Stanford University, 443 Via Ortega, Stanford, 94305, CA, United States; Department of Mechanical Engineering, Stanford University, Stanford, CA, United States","Wu L.C., Department of Bioengineering, Stanford University, 443 Via Ortega, Stanford, 94305, CA, United States; Nangia V., Department of Mechanical Engineering, Stanford University, Stanford, CA, United States; Bui K., Department of Bioengineering, Stanford University, 443 Via Ortega, Stanford, 94305, CA, United States; Hammoor B., Department of Bioengineering, Stanford University, 443 Via Ortega, Stanford, 94305, CA, United States; Kurt M., Department of Bioengineering, Stanford University, 443 Via Ortega, Stanford, 94305, CA, United States; Hernandez F., Department of Mechanical Engineering, Stanford University, Stanford, CA, United States; Kuo C., Department of Mechanical Engineering, Stanford University, Stanford, CA, United States; Camarillo D.B., Department of Bioengineering, Stanford University, 443 Via Ortega, Stanford, 94305, CA, United States, Department of Mechanical Engineering, Stanford University, Stanford, CA, United States","Inertial sensors are commonly used to measure human head motion. Some sensors have been tested with dummy or cadaver experiments with mixed results, and methods to evaluate sensors in vivo are lacking. Here we present an in vivo method using high speed video to test teeth-mounted (mouthguard), soft tissue-mounted (skin patch), and headgear-mounted (skull cap) sensors during 6–13 g sagittal soccer head impacts. Sensor coupling to the skull was quantified by displacement from an ear-canal reference. Mouthguard displacements were within video measurement error (<1 mm), while the skin patch and skull cap displaced up to 4 and 13 mm from the ear-canal reference, respectively. We used the mouthguard, which had the least displacement from skull, as the reference to assess 6-degree-of-freedom skin patch and skull cap measurements. Linear and rotational acceleration magnitudes were over-predicted by both the skin patch (with 120% NRMS error for (Formula presented.) , 290% for (Formula presented.) ) and the skull cap (320% NRMS error for (Formula presented.) , 500% for (Formula presented.) ). Such over-predictions were largely due to out-of-plane motion. To model sensor error, we found that in-plane skin patch linear acceleration in the anterior–posterior direction could be modeled by an underdamped viscoelastic system. In summary, the mouthguard showed tighter skull coupling than the other sensor mounting approaches. Furthermore, the in vivo methods presented are valuable for investigating skull acceleration sensor technologies. © 2015, Biomedical Engineering Society.","Head impact sensors; High speed video; Instrumented mouthguard; Instrumented skin patch; Instrumented skull cap; Soft tissue modeling; Traumatic brain injury; Wearable sensors","Adult; Biomechanical Phenomena; Craniocerebral Trauma; Head Movements; Humans; Male; Models, Biological; Mouth Protectors; Skin; Soccer; Telemetry; Video Recording; Brain; Displacement measurement; Errors; High speed cameras; Tissue; Viscoelasticity; Wearable technology; Head impact; High-speed video; Instrumented mouthguard; Instrumented skull cap; Skin patch; Soft tissue modeling; Traumatic Brain Injuries; acceleration; adult; Article; clinical evaluation; head movement; human; human experiment; in vivo study; kinematics; male; measurement error; prediction; priority journal; rotation; sensor; skull; soccer; viscoelasticity; wearable head impact sensor; biological model; biomechanics; devices; head injury; head movement; injuries; mouth protector; physiology; skin; telemetry; videorecording; Wearable sensors","Bartsch A., Samorezov S., Benzel E., Miele V., Brett D., Validation of an “intelligent mouthguard” single event head impact dosimeter, Stapp Car Crash J., 58, pp. 1-27, (2014); Beckwith J.G., Greenwald R.M., Chu J.J., Measuring head kinematics in football: correlation between the head impact telemetry system and hybrid III headform, Ann. Biomed. Eng., 40, 1, pp. 237-248, (2012); Camarillo D.B., Shull P.B., Mattson J., Shultz R., Garza D., An instrumented mouthguard for measuring linear and angular head impact kinematics in American football, Ann. Biomed. Eng., 41, 9, pp. 1939-1949, (2013); Christopher J.J., Sochor M.R., Pellettiere J., Salzar R.S., Assessment of Ear- and Tooth-Mounted Accelerometers as Representative of Human Head Response. SAE Technical Paper No, 2013-01-0805, (2013); Duma S.M., Manoogian S.J., Bussone W.R., Gunnar Brolinson P., Goforth M.W., Donnenwerth J.J., Greenwald R.M., Chu J.J., Crisco J.J., Analysis of real-time head accelerations in collegiate football players, Clin. J. Sport Med., 15, 1, pp. 3-8, (2005); Ewins D.J., Modal Testing: Theory, Practice and Application, (2000); Section 571, Standard 202a-Head restraints, (2014); Funk J.R., Cormier J.M., Bain C.E., Guzman H., Bonugli E., Validation and Application of a Methodology to Calculate Head Accelerations and Neck Loading in Soccer Ball Impacts. SAE Technical Paper No, 2009-01-0251, (2009); Heikkila J., Silven O., A Four-step Camera Calibration Procedure with Implicit Image Correction, In: Proceedings of IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 1997, pp. 1106-1112; Hernandez F., Wu L.C., Yip M.C., Laksari K., Hoffman A.R., Lopez J.R., Grant G.A., Kleiven S., Camarillo D.B., Six degree-of-freedom measurements of human mild traumatic brain injury, Ann. Biomed. Eng., 43, 8, pp. 1918-1934, (2014); Higgins M., Halstead P.D., Snyder-Mackler L., Barlow D., Measurement of impact acceleration: mouthpiece accelerometer versus helmet accelerometer, J. Athl. 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Biomech., 30, 1, pp. 729-732, (1997); Rowson S., Duma S.M., Development of the STAR evaluation system for football helmets: integrating player head impact exposure and risk of concussion, Ann. Biomed. Eng., 39, 8, pp. 2130-2140, (2011); Rowson S., Beckwith J.G., Chu J.J., Leonard D.S., Greenwald R.M., Duma S.M., A six degree of freedom head acceleration measurement device for use in football, J. Appl. Biomech., 27, 1, pp. 8-14, (2011); Salzar R.S., Dale Bass C.R., SAE Technical Paper No, 2008-01-2978, (2014); Shewchenko N., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football. Part 1: development of biomechanical methods to investigate head response, Br. J. Sports Med., 39, pp. 10-25, (2005); Shultz R., Kedgley A.E., Jenkyn T.R., Quantifying skin motion artifact error of the hindfoot and forefoot marker clusters with the optical tracking of a multi-segment foot model using single-plane fluoroscopy, Gait Posture, 34, 1, pp. 44-48, (2011); Takhounts E.G., Craig M.J., Moorhouse K., McFadden J., Hasija V., Development of brain injury criteria (BrIC), Stapp Car Crash J., 57, pp. 234-266, (2013); Trujillo D.M., Busby H.R., A mathematical method for the measurement of bone motion with skin-mounted accelerometers, J. Biomech. Eng., 112, pp. 229-231, (1990); Wu L.C., Zarnescu L., Nangia V., Cam B., Camarillo D.B., A head impact detection system using SVM classification and proximity sensing in an instrumented mouthguard, IEEE Trans. Biomed. Eng., 61, 11, pp. 2659-2668, (2014); Zhang Z., Flexible camera calibration by viewing a plane from unknown orientations, Proceedings of the Seventh IEEE International Conference on Computer Vision, vol. 1, pp. 666-673, (1999)","D.B. Camarillo; Department of Bioengineering, Stanford University, Stanford, 443 Via Ortega, 94305, United States; email: dcamarillo@stanford.edu","","Springer New York LLC","00906964","","ABMEC","26289941","English","Ann Biomed Eng","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84939605292" "Barfield W.R.; Kirkendall D.T.; Yu B.","Barfield, William Roy (7006508917); Kirkendall, Donald T. (7003555207); Yu, Bing (35301366400)","7006508917; 7003555207; 35301366400","Kinematic instep kicking differences between elite female and male soccer players","2002","Journal of Sports Science and Medicine","1","3","","72","79","7","97","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-10244273878&partnerID=40&md5=96f5c501416bfecc632072d7accce1c2","Department of Orthopaedic Surgery, Medical University of South Carolina, College of Charleston, Charleston, SC, United States; Departments of Orthopaedic Surgery and Exercise and Sport Sciences, University of NC, Chapel Hill, NC, United States; Center for Human Movement Science, Division of Physical Therapy, University of NC-Chapel Hill, Chapel Hill, NC, United States; Orthopaedic Surgery, Medical University of South Carolina, College of Charleston, Charleston, SC, United States; Orthopaedic Surgery and Exercise Science, UNC-Chapel Hill, Chapel Hill, NC, United States; Division of Physical Therapy, UNC-Chapel Hill, Chapel Hill, NC, United States; Department of Orthopaedic Surgery, Medical University of South Carolina, College of Charleston, Charleston, SC 29425, United States","Barfield W.R., Department of Orthopaedic Surgery, Medical University of South Carolina, College of Charleston, Charleston, SC, United States, Orthopaedic Surgery, Medical University of South Carolina, College of Charleston, Charleston, SC, United States, Department of Orthopaedic Surgery, Medical University of South Carolina, College of Charleston, Charleston, SC 29425, United States; Kirkendall D.T., Departments of Orthopaedic Surgery and Exercise and Sport Sciences, University of NC, Chapel Hill, NC, United States, Orthopaedic Surgery and Exercise Science, UNC-Chapel Hill, Chapel Hill, NC, United States; Yu B., Center for Human Movement Science, Division of Physical Therapy, University of NC-Chapel Hill, Chapel Hill, NC, United States, Division of Physical Therapy, UNC-Chapel Hill, Chapel Hill, NC, United States","The rapid rise in female participation in soccer worldwide has not been followed by a corresponding increase in the number of studies biomechanically that target female kicking patterns to determine if differences exist between males and females. The objectives of this study were to examine kinematic instep kicking differences between elite female and male soccer players in dominant and nondominant limbs. Eight elite soccer players, six females and two males, volunteered as subjects in the study. Subjects took a two-step angled approach of 45-60 degrees to a stationary soccer ball positioned between two force platforms and kicked the ball with the instep portion of the foot as hard as possible into netting which was draped from the ceiling. Ball velocity was the dependent variable. We evaluated six additional variables that have previously been shown to be important predictors of instep kicking ball speed. The males generally kicked the ball faster than the females and displayed greater kinematic variables, including maximum toe velocity, ball contact ball velocity, mean toe velocity, mean toe acceleration, and ankle velocity at ball contact, all of which contributed to faster ball speed. There was one exception. One of the elite females kicked faster than the two elite males and demonstrated higher or similar kinematic patterns when compared with the males. Our conclusions were that females do not instep kick the ball as fast as males, but there are exceptions, as our data demonstrates. © Journal of Sports Science and Medicine (2002).","Biomechanics; Gender differences; Soccer kicking","","Abo-Abdo H.E., Kinematic and Kinetic Analysis of the Soccer Instepkick, (1981); Asai T., Kobayashi K., Oshima Y., Biomechanical analysis of instep kick in soccer, Proceedings of Japanese Physical Education, (1980); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Barfield W.R., Effects of Selected Biomechanical Variables on a Coordinated Human Movement:instep Kicking with Dominant and Nondominant Feet, (1993); Barfield W.R., Effects of selected kinematic and kinetic variables on instep kicking with dominant and nondominant limbs, Journal of Human Movement Studies, 29, pp. 251-272, (1995); Barfield W.R., Biomechanics of kicking, Textbook of Sports Medicine, pp. 86-94, (1997); Ben-Sira D., A Comparison of the Mechanical Characteristics of the Instep Kick between Skilled Soccer Players and Novices, (1980); Bloomfield J., Elliott B., Davies C., Development of the soccer kick: A cinematographical analysis, Journal of Human Movement Studies, 3, pp. 152-159, (1979); Bollens E.C., DeProft E., Clarys J.P., The accuracy and muscle monitoring in soccer kicking, Biomechanics X-A, pp. 283-288, (1987); Butterfield S.A., Loovis E.M., Influence of age, sex, balance, and sport participation on developemnt of kicking by children in grades K-8, Perceptual and Motor Skills, 79, pp. 691-697, (1994); Cabri J., DeProft E., Dufour W., Clarys J.P., The relation between muscular strength an kick performance, Science and Football, pp. 186-193, (1988); Chyzowych W., The Official Soccer Book of the United States Soccer Federation, (1979); DeProft E., Cabri J., Dufour W., Clarys J.P., Strength training and kick performance in soccer players, Science and Football, pp. 108-113, (1988); DeProft E., Clarys J.P., Bollens E., Cabri J., Dufour W., Muscle activity in the soccer kick, Science and Football, pp. 434-440, (1988); Dos Anjos L.A., Adrian M.J., Ground reaction forces during soccer kicks performed by skilled and unskilled subjects, Revista Brasileira de Cienias do Esporto (Abstract), (1986); Dunn E.G., Putnam C.A., The influence of lower leg motion on thigh deceleration in kicking, Biomechanics XI-B, pp. 787-790, (1988); Elliott B.C., Bloomfield J., Davies C.M., Development of the punt kick:a cinematographical analysis, Journal of Human Movement Studies, 6, pp. 142-150, (1980); Gainor B.J., Piotrowski G., Puhl J.J., Allen W.C., The kick:biomechanics and collision injury, American Journal of Sports Medicine, 6, pp. 185-193, (1978); Hay J.G., The Biomechanics of Sports Techniques-fourth Edition, (1996); Huang T.C., Roberts E.M., Youm Y., Biomechanics of kicking, Human Body Dynamics:Impact, Occupational, and Athletic Aspects, pp. 409-443, (1982); Isokawa M., Lees A., A biomechanical analysis of the instep kick motion in soccer, Science and Football, pp. 449-455, (1988); Kaufmann D.A., Stanton D.E., Updyke W.F., Kinematical analysis of conventional-style and soccer style place kicking in football, Medicine & Science in Sports & Exercise, 7, pp. 77-78, (1975); Lindbeck L., Impulse and moment of impulse in the leg joints by impact from kicking, Journal of Biomechanical Engineering, 105, pp. 108-111, (1983); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 441-448, (1988); Mognoni P., Narici M.V., Sirtori M.D., Lorenzelli F., Isokinetic torques and kicking maximal ball velocity in young soccer players, Journal of Sports Medicine and Physical Fitness, 34, pp. 357-361, (1994); Narici M.V., Sirtori M.D., Mognoni P., Maximal ball velocity and peak torques of hip flexor and knee extensor muscles, Science and Football, pp. 429-433, (1988); Nishijima T., Tasaki E., Noda Y., Tanaka K., Development of principal motor movements controlling ball kicking performance, ACSM National Meeting Proceedings (Abstract), (1996); Olson J.R., Hunter G.R., Anatomic and biomechanical analyses of the soccer style free kick, National Strength and Conditioning Association Journal, 7, pp. 50-53, (1985); Phillips S.J., Invariance of elite kicking performance, Biomechanics IX-B, pp. 539-542, (1985); Plagenhoff S., Patterns of Human Motion: A Cinematographic Analysis, (1971); Putnam C.A., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Medicine & Science in Sports & Exercise, 23, pp. 130-144, (1991); Roberts E.M., Metcalfe A., Mechanical analysis of kicking, Biomechanics I, pp. 315-319, (1968); Robertson D.G.E., Mosher R.E., Work and power of the leg muscles in soccer kicking, Biomechanics IX-B, pp. 533-538, (1985); Rodano R., Tavana R., Three-dimensional analysis of instep kick in professional soccer players, Science and Football II, pp. 357-361, (1993); Tsaousidis N., Zatsiorsky V., Two types of ball-effector interaction and their relative contribution to soccer kicking, Human Movement Science, 15, pp. 861-876, (1996); Yu B., Andrews J.G., The relationship between free limb motions and performance in the triple jump, Journal of Applied Biomechanics, 14, pp. 223-237, (1999)","W.R. Barfield; Department of Orthopaedic Surgery, Medical University of South Carolina, College of Charleston, Charleston, SC 29425, United States; email: barfielb@musc.edu","","","13032968","","","","English","J. Sports Sci. Med.","Article","Final","","Scopus","2-s2.0-10244273878" "Pollard C.D.; Sigward S.M.; Ota S.; Langford K.; Powers C.M.","Pollard, Christine D. (7006671942); Sigward, Susan M. (9735729200); Ota, Susumu (35959951800); Langford, Karen (35606954200); Powers, Christopher M. (7103284208)","7006671942; 9735729200; 35959951800; 35606954200; 7103284208","The influence of in-season injury prevention training on lower-extremity kinematics during landing in female soccer players","2006","Clinical Journal of Sport Medicine","16","3","","223","227","4","137","10.1097/00042752-200605000-00006","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33745233529&doi=10.1097%2f00042752-200605000-00006&partnerID=40&md5=f466abb27a16251dd341073a72aa1e5b","Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States; University of Southern California, CHP-155, Los Angeles, CA 90089-9006, 1540 East Alcazar Street, United States","Pollard C.D., Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States, University of Southern California, CHP-155, Los Angeles, CA 90089-9006, 1540 East Alcazar Street, United States; Sigward S.M., Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States; Ota S., Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States; Langford K., Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States; Powers C.M., Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States","OBJECTIVE: To examine the influence of in-season injury prevention training on hip and knee kinematics during a landing task. DESIGN: Longitudinal pre-post intervention study. SETTING: Testing sessions were conducted in a biomechanics research laboratory. PARTICIPANTS: Eighteen female soccer players between the ages of 14 and 17 participated in this study. All subjects were healthy with no current complaints of lower extremity injury. INTERVENTIONS: Testing sessions were conducted prior to and following a season of soccer practice combined with injury prevention training. MAIN OUTCOME MEASUREMENTS: During each testing session three-dimensional kinematics were collected while each subject performed a drop landing task. Peak hip and knee joint angles were measured during the early deceleration phase of landing and compared between pre- and post-training using paired t-tests. RESULTS: Following a season of soccer practice combined with injury prevention training, females demonstrated significantly less hip internal rotation (7.1° vs. 1.9°; P=0.01) and significantly greater hip abduction (-4.9° vs. -7.7°; P=0.02). No differences in knee valgus or knee flexion angles were found post-season. CONCLUSIONS: Female soccer players exhibited significant changes in hip kinematics during a landing task following in-season injury prevention training. Our results support the premise that a season of soccer practice combined with injury prevention training is effective in altering lower extremity motions that may play a role in predisposing females to ACL injury. Copyright © 2006 by Lippincott Williams & Wilkins.","ACL injury; Hip kinematics; Knee kinematics","Adolescent; Athletic Injuries; Biomechanics; Female; Hip Injuries; Hip Joint; Humans; Knee Injuries; Knee Joint; Longitudinal Studies; Lower Extremity; Soccer; adolescent; anterior cruciate ligament injury; article; athlete; biomechanics; clinical article; comparative study; controlled study; deceleration; female; human; kinetics; knee function; leg; measurement; priority journal; sport injury; Student t test; training; valgus knee","Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. NCAA data and review of literature, Am J Sports Med, 23, pp. 694-701, (1995); Griffin L.Y., Agel J., Albohm M.J., Et al., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, J Am Acad Orthop Surg, 8, pp. 141-150, (2000); Boden B., Dean G., Feagin J., Et al., Mechanisms of Anterior Cruciate Ligament Injury, Orthopedics, 23, pp. 573-578, (2000); McNair P.J., Marshall R.N., Matheson J.A., Important features associated with acute anterior cruciate ligament injury, N Z Med J, 103, pp. 537-539, (1990); Myklebust G., Maehlum S., Holm I., Et al., A prospective cohort study of anterior cruciate ligament injuries in elite Norwegian team handball, Scand J Med Sci Sports, 8, pp. 149-153, (1998); Ferretti A., Papandrea P., Conteduca F., Et al., Knee ligament injuries in volleyball players, Am J Sports Med, 20, pp. 203-207, (1992); Ferber R., Davis I.M., Williams D.S., Gender differences in lower extremity mechanics during running, Clin Biomech, 18, pp. 350-357, (2003); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, pp. 1745-1750, (2003); Lephart S.M., Ferris C.M., Riemann B.L., Et al., Gender differences in strength and lower extremity kinematics during landing, Clin Orthop Rel Res, 401, pp. 162-169, (2002); Malinzak R.A., Colby S.M., Kirkendal D.T., Et al., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech, 16, pp. 438-445, (2001); McLean S.G., Neal R.J., Myers P.T., Et al., Knee joint kinematics during the sidestep cutting maneuver: Potential for injury in women, Med Sci Sports Exerc, 31, pp. 959-968, (1999); Pollard C.D., Davis I.M., Hamill J., Influence of gender on hip and knee mechanics during a randomly cued cutting maneuver, Clin Biomech, 19, pp. 1022-1031, (2004); Markolf K.L., Burchfield D.M., Shapiro M.M., Et al., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, pp. 930-935, (1995); Carrafa A., Cerulli M., Projetti M., Et al., Prevention of anterior cruciate ligament injuries in soccer, Knee Surg Sports Traumatol Arthrosc, 4, pp. 19-21, (1996); Hewett T.E., Riccobene J.V., Lindenfeld T.N., The effect of neuromuscular training on the incidence of knee injury in female athletes: A prospective study, Am J Sports Med, 24, pp. 699-706, (1999); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Et al., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes, Am J Sports Med, 33, pp. 1003-1010, (2005); Myklebust G., Engebretsen L., Braekken I.H., Et al., Prevention of anterior cruciate ligament injuries in female team handball players: A prospective intervention study over three seasons, Clin J Sport Med, 13, pp. 71-78, (2003); Hewett T.E., Stroupe A.L., Nance T.A., Et al., Plyometric training in female athletes, Am J Sports Med, 24, pp. 765-773, (1996); Lee T.Q., Anzel S.H., Bennett K.A., Et al., The influence of fixed rotational deformities of the femur on the patellofemoral contact pressures in human cadaver knees, Clin Orthop, pp. 69-74, (1994); Powers C.M., Ward S.R., Fredericson M., Et al., Patellar kinematics during weight-bearing and non-weight-bearing movements in persons with patellar subluxation, J Orthop Sports Phys Ther, 33, pp. 639-646, (2003); Leetun D.T., Ireland M.L., Wilson J.D., Et al., Core stability measures as risk factors for lower extremity injury in athletes, Med Sci Sports Exerc, 36, pp. 926-934, (2004)","C.D. Pollard; University of Southern California, CHP-155, Los Angeles, CA 90089-9006, 1540 East Alcazar Street, United States; email: cpollard@usc.edu","","","1050642X","","CJSME","16778542","English","Clin. J. Sport Med.","Article","Final","","Scopus","2-s2.0-33745233529" "Nunome H.; Ikegami Y.; Kozakai R.; Apriantono T.; Sano S.","Nunome, Hiroyuki (6507093692); Ikegami, Yasuo (7103189958); Kozakai, Rumi (6506723609); Apriantono, Tommy (12902665900); Sano, Shinya (36784956700)","6507093692; 7103189958; 6506723609; 12902665900; 36784956700","Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg","2006","Journal of Sports Sciences","24","5","","529","541","12","132","10.1080/02640410500298024","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33645891189&doi=10.1080%2f02640410500298024&partnerID=40&md5=4238ef959d9c54da37bd36e3edfbdf34","Research Centre of Health, Physical Fitness and Sports, Nagoya University, Chikusa, Nagoya 464-8601, Furo-cho, Japan; Graduate School of Medicine, Nagoya University, Chikusa, Nagoya 464-8601, Furo-cho, Japan; Graduate School of Human Informatics, Nagoya University, Chikusa, Nagoya 464-8601, Furo-cho, Japan; Department of Epidemieology, National Institute of Longevity Sciences, Obu, Japan","Nunome H., Research Centre of Health, Physical Fitness and Sports, Nagoya University, Chikusa, Nagoya 464-8601, Furo-cho, Japan; Ikegami Y., Research Centre of Health, Physical Fitness and Sports, Nagoya University, Chikusa, Nagoya 464-8601, Furo-cho, Japan; Kozakai R., Department of Epidemieology, National Institute of Longevity Sciences, Obu, Japan; Apriantono T., Graduate School of Medicine, Nagoya University, Chikusa, Nagoya 464-8601, Furo-cho, Japan; Sano S., Graduate School of Human Informatics, Nagoya University, Chikusa, Nagoya 464-8601, Furo-cho, Japan","Detailed time-series of the resultant joint moments and segmental interactions during soccer instep kicking were compared between the preferred and non-preferred kicking leg. The kicking motions of both legs were captured for five highly skilled players using a three-dimensional cinematographic technique at 200 Hz. The resultant joint moment (muscle moment) and moment due to segmental interactions (interaction moment) were computed using a two-link kinetic chain model composed of the thigh and lower leg (including shank and foot). The mechanical functioning of the muscle and interaction moments during kicking were clearly illustrated. Significantly greater ball velocity (32.1 vs. 27.1 m · s-1), shank angular velocity (39.4 vs. 31.8 rad · s-1) and final foot velocity (22.7 vs. 19.6 m · s-1) were observed for the preferred leg. The preferred leg showed a significantly greater knee muscle moment (129.9 N · m) than the non-preferred leg (93.5 N · m), while no substantial differences were found for the interaction moment between the two legs (79.3 vs. 55.7 N · m). These results indicate that the highly skilled soccer players achieved a well-coordinated inter-segmental motion for both the preferred and non-preferred leg. The faster leg swing observed for the preferred leg was most likely the result of the larger muscle moment. © 2006 Taylor & Francis.","Asymetry of kicking; Motion-dependent interaction moment; Proximal-distal sequence; Resultant joint moment","Adolescent; Biomechanics; Functional Laterality; Humans; Lower Extremity; Motion; Movement; Soccer; Sports Equipment; Task Performance and Analysis; article; biomechanics; comparative study; competition; controlled study; force; human; human experiment; joint function; joint mobility; leg movement; lower leg; model; muscle function; normal human; physical performance; sport; sports science; task performance; thigh; time series analysis; velocity","Abdel-Aziz Y., Karara H., Direct linear transformation from comparator coordinates into object space coordinates in close-range photogrammetry, Proceedings of the ASP/UI Symposium on Close-Range Photogrammetry, pp. 1-18, (1971); Ae M., Tang H., Yokoi T., Estimation of inertial properties on the body segments in Japanese athletes, Biomechanisms 11: Form, Motion, and Function in Humans, pp. 23-33, (1992); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Barfield W., Effects of selected kinamatic and kinetic variables on instep kicking with dominant and nondominant limbs, Journal of Human Movement Studies, 29, pp. 251-272, (1995); Brady E., O'Regan M., McCormack B., Isokinetic assessment of uninjured soccer players, Science and Football, 2, pp. 351-356, (1993); Carey D., Smith G., Smith D., Shepherd J., Skriver J., Ord L., Footedness in world soccer: An analysis of France '98, Journal of Sports Sciences, 19, pp. 855-864, (2001); Dorge H., Andersen T., Sorensen H., Simonsen E., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, pp. 293-299, (2002); Dorge H., Andersen T., Sorensen H., Simonsen E., Aagaard H., Dyhre-Poulsen P., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick Scandinavian, Journal of Medicine and Science in Sports, 9, pp. 195-200, (1999); Feltner M., Dapena J., Dynamics of the shoulder and elbow joints of the throwing arm during a baseball pitch, International Journal of Sport Biomechanics, 2, pp. 235-259, (1986); Giakas G., Baltzopoulos V., Bartlett R., Improved extrapolation techniques in recursive digital filtering: A comparison of least squares and prediction, Journal of Biomechanics, 31, pp. 87-91, (1998); Jensen R., Estimation of the biomechanical properties of three body types using a photogrammetric method, Journal of Biomechanics, 11, pp. 349-358, (1978); Lees A., Biomechanics applied to soccer skills, Science and Soccer, pp. 123-134, (1996); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (1998); Levanon J., Dapena J., Comparison of the kinematics of the full-instep kick and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, pp. 917-927, (1998); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 441-448, (1988); McLean B., Tumilty D., Left-right asymmetry in two types of soccer kick, British Journal of Sports Medicine, 27, pp. 260-262, (1993); Mognoni P., Narici M., Sirtori M., Lorenzelli F., Isokinetic torques and kicking maximal ball velocity in young soccer players, Journal of Sports Medicine and Physical Fitness, 34, pp. 357-371, (1994); Narici M., Sirtori M., Mognoni P., Maximal ball velocity and peak torques of hip flexor and knee extensor muscles, Science and Football, pp. 429-433, (1988); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, pp. 2028-2036, (2002); Putnam C., A segmental interaction analysis of proximal-to-distal sequential segment motion patterns, Medicine and Science in Sports and Exercise, 23, pp. 130-144, (1991); Roberts E., Zernicke R., Youm Y., Huang T., Kinetic parameters of kicking, Biomechanics IV, pp. 157-162, (1974); Robertson D., Mosher P., Work and power of the leg muscles in soccer kicking, Biomechanics IX-B, pp. 533-538, (1985); Rodano R., Tavana R., Three dimensional analysis of the instep kick in professional soccer players, Science and Football II, pp. 357-361, (1993); Sprigings E., Marshall R., Elliot B., Jennings L., A three-dimensional kinematic method for determining the effect of arm segment rotations in producing racquet-head speed, Journal of Biomechanics, 27, pp. 245-254, (1994); Strarosta W., Symmetry and asymmetry in shooting demonstrated by elite soccer players, Science and Football, pp. 346-355, (1988); Zerincke R., Roberts E., Human lower extremity kinetic relationship during systematic variations in resultant limb velocity, Biomechanics V-B, pp. 20-25, (1976); Zerincke R., Roberts E., Lower extremity forces and torques during systematic variation of non-weight bearing motion, Medicine and Science in Sports and Exercise, 10, pp. 21-26, (1978)","H. Nunome; Research Centre of Health, Physical Fitness and Sports, Nagoya University, Chikusa, Nagoya 464-8601, Furo-cho, Japan; email: nunome@htc.nagoya.u.ac.jp","","","1466447X","","JSSCE","16608767","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-33645891189" "Chamari K.; Chaouachi A.; Hambli M.; Kaouech F.; Wisloff U.; Castagna C.","Chamari, Karim (6602474344); Chaouachi, Anis (58586134000); Hambli, Mourad (24502714100); Kaouech, Fethi (16637216300); Wisloff, Ulrik (57204822365); Castagna, Carlo (7003810227)","6602474344; 58586134000; 24502714100; 16637216300; 57204822365; 7003810227","The five-jump test for distance as a field test to assess lower limb explosive power in soccer players","2008","Journal of Strength and Conditioning Research","22","3","","944","950","6","125","10.1519/JSC.0b013e31816a57c6","https://www.scopus.com/inward/record.uri?eid=2-s2.0-48849109306&doi=10.1519%2fJSC.0b013e31816a57c6&partnerID=40&md5=c51e393bfe414634259903be0dee67bc","Research Unit on Evaluation, Sport, Health, National Centre of Medicine and Science in Sport, Tunis, Tunisia; Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway; School of Sport and Exercise Sciences, Faculty of Medicine and Surgery, Tor Vergata University, Rome, Italy; Scuola Regionale dello Sport delie Marche, Italian Olympic Committee, Ancona, Italy","Chamari K., Research Unit on Evaluation, Sport, Health, National Centre of Medicine and Science in Sport, Tunis, Tunisia; Chaouachi A., Research Unit on Evaluation, Sport, Health, National Centre of Medicine and Science in Sport, Tunis, Tunisia; Hambli M., Research Unit on Evaluation, Sport, Health, National Centre of Medicine and Science in Sport, Tunis, Tunisia; Kaouech F., Research Unit on Evaluation, Sport, Health, National Centre of Medicine and Science in Sport, Tunis, Tunisia; Wisloff U., Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway; Castagna C., School of Sport and Exercise Sciences, Faculty of Medicine and Surgery, Tor Vergata University, Rome, Italy, Scuola Regionale dello Sport delie Marche, Italian Olympic Committee, Ancona, Italy","The 5-jump test (5JT) was proposed to evaluate lower limb explosive power of athletes competing in various disciplines. Although 5JT performance is usually expressed in absolute terms as the overall distance covered (i.e., in meters), subject size can play a significant role in the performance. The aims of the present study were to test the relationship of 5JT absolute performance with laboratory tests for explosive power and to develop performance notations useful to improve the diagnostic value of 5JT. Fifteen elite soccer players, members of the Under-23 Tunisian national team, were tested for 5JT, force platform vertical jumping (squat jump [SJ] and arm-aided countermovement jump [Arm-CMJ]), and concentric isokinetic leg extension/flexion (90°· s-1 and 240°·s-1). 5JT performance was expressed in absolute terms (meters), relative to leg length (5JT-relative) and with body mass-dependent notations (Body mass × 5JT, 5JT-body mass). 5JT performance was significantly correlated with SJ height and scaled (W·kg-0.67) peak power (0.72 and 0.77, respectively, p < 0.01). 5JT-relative values were significantly related to SJ and Arm-CMJ height (0.61 and 0.71, respectively, p < 0.05) and scaled peak power (0.57 and 0.59, respectively, p < 0.05). 5JT-body mass revealed significantly related of SJ (0.82, p < 0.0001) and Arm-CMJ peak power (0.54, p < 0.05) and to SJ and Arm-CMJ peak force (0.67 and 0.65, respectively p < 0.05). 5JT-relative and 5JT-body mass correlated significantly with knee extensors 240°· s-1 (0.60, p < 0.05) and knee flexors 90°·s -1 (0.67, p < 0.01) isokinetic acceleration time, respectively. The results of this study suggest that the 5JT may be regarded as an explosive strength diagnostic tool under field conditions in elite soccer players. The use of performance notation accounting for body size differences may improve the diagnostic ability of 5JT. © 2008 National Strength and Conditioning Association.","Allometric scaling; Explosive strength; Football; Isokinetic; Soccer; Vertical jump","Adult; Biomechanics; Cohort Studies; Exercise Test; Exercise Tolerance; Humans; Isometric Contraction; Leg; Male; Muscle Fatigue; Muscle Strength; Muscle, Skeletal; Probability; Soccer; Task Performance and Analysis; Torque; adult; article; biomechanics; cohort analysis; exercise test; exercise tolerance; human; leg; male; methodology; muscle fatigue; muscle isometric contraction; muscle strength; physiology; probability; skeletal muscle; sport; task performance; torque","Arnason A., Sigurdsson S.B., Gudmundsson A., Holme I., Engebretsen L., Bahr R., Physical fitness, injuries, and team performance in soccer, Med Sci Sports Exerc, 36, pp. 278-285, (2004); Astrand P.O., Rodahl K., Textbook of Work Physiology - Physiological Bases of Exercise, (1986); Batterham A.M., Hopkins W.G., Making meaningful inferences about magnitudes, Int J Sports Physiol Perform, 1, pp. 18-25, (2006); Bosco C., Luhtanen P., Komi P.V., A simple method for measurement of mechanical power in jumping, Eur JAppl Physiol, 50, pp. 273-282, (1983); Bouhlel E., Bouhlel H., Chelly M.S., Tabka Z., Relationship between maximal anaerobic power measured by force-velocity test and performance in the counter movement jump and in the 5-jump test in moderately trained boys, Sci Sports, 21, pp. 1-7, (2006); Challis J.H., Methodological report: The appropriate scaling of weightlifting performance, J Strength Cond Res, 13, pp. 367-371, (1999); Challis J.H., Examination of the scaling of human jumping, J Strength Cond Res, 18, pp. 803-809, (2004); Chamari K., Hachana Y., Ahmed Y.B., Galy O., Sghaier F., Chatard J.C., Hue O., Wisksff U., Field and laboratory testing in young elite soccer players, Br J Sports Med, 38, pp. 191-196, (2004); Chtara M., Chamari K., Chaouachi M., Chaouachi A., Koubaa D., Feki Y., Millet G.P., Amri M., Effects of intra-session concurrent endurance and strength training sequence on aerobic performance and capacity, Br J Sports Med, 39, pp. 555-560, (2005); Church J.B., Wiggins M.S., Moode F.M., Crist R., Effect of warm-up and flexibility treatments on vertical jump performance, J Strength Cond Res, 15, pp. 332-336, (2001); Clarke D., Clarke H., Research Processes in Physical Education, Recreation and Health, (1970); Cometti G., Maffiuletti N.A., Pousson M., Chatard J.C., Maffulli N., Isokinetic strength and anaerobic power of elite, subelite and amateur French soccer players, Int J Sports Med, 11, pp. 45-51, (2001); Cosgrove M.J., Wilson J., Watt D., Grant S.F., The relationship between selected physiological variables of rowers and rowing performance as determined by a 2000 m ergometer test, J Sports Sci, 17, pp. 845-852, (1999); Davies C.T.M., Rennie R., Human power output, Nature, 117, pp. 770-771, (1968); Harman E.A., Rosenstein M.T., Frykman P.N., Rosenstein R.M., The effects of arms and countermovement on vertical jumping, Med Sci Sports Exerc, 6, pp. 825-833, (1990); Helgerud J., Engen L.C., Wisksff U., Hoff J., Aerobic endurance training improves soccer performance, Med Sci Sports Exerc, 33, pp. 1925-1931, (2001); Hoff J., Kemi O.J., Helgerud J., Strength and endurance differences between elite and junior elite ice hockey players. The importance of allometric scaling, Int J Sports Med, 16, pp. 537-541, (2005); Hopkins W.G., Measures of reliability in sports medicine and science, Sports Med, 30, pp. 1-15, (2000); Hopkins W.G., Hewson D.J., Variability of competitive performance of distance runners, Med Sci Sports Exerc, 33, pp. 1588-1592, (2001); Hopkins W.G., Schabort E.J., Hawley J.A., Reliability of power in physical performance tests, Sports Med, 31, pp. 211-234, (2001); Jaric S., Radosavljevic-Jaric S., Johansson H., Muscle force and muscle torque in humans require different methods when adjusting for differences in body size, Eur J Appl Physiol, 87, pp. 304-307, (2002); Knudson D., Bennett K., Corn R., Leick D., Smith C., Acute effects of stretching are not evident in the kinematics of the vertical jump, J Strength Cond Res, 15, pp. 98-101, (2001); Kokkonen J., Nelson A.G., Cornwell A., Acute muscle stretching inhibits maximal strength performances, Res Q Exerc Sport, 69, pp. 411-415, (1998); Lees A., Vanrenterghem J., De Clercq D., Understanding how an arm swing enhances performance in the vertical jump, J Biomech, 37, pp. 1929-1940, (2004); Lees A., Vanrenterghem J., De Clercq D., The energetics and benefit of an arm swing in submaximal and maximal vertical jump performance, J Sports Sci, 14, pp. 51-57, (2006); Murphy A.J., Lockie R.G., Coutts A.J., Kinematic determinants of early acceleration in field sport athletes, J Sports Sci Med, 1, pp. 144-150, (2003); Nelson A.G., Guillory I.K., Comwell A., Kokkonen J., Inhibition of maximal voluntary isokinetic torque production following stretching is velocity-specific, J Strength Cond Res, 15, pp. 241-246, (2001); Paavolainen L., Hakkinen K., Hamalainen I., Nummela A., Rusko H., Explosive-strength training improves 5-km running time by improving running economy and muscle power, J Appl Physiol, 86, pp. 1527-1533, (1999); Rampinini E., Bishop D., Marcora S.M., Ferrari Bravo D., Sassi R., Impellizzeri F.M., Validity of simple field tests as indicators of match-related physical performance in top-level professional soccer players, Int J Sports Med, 28, pp. 228-235, (2007); Ridderikhoff A., Batelaan J.H., Bobbert M.F., Jumping for distance: Control of the external force in squat jumps, Med Sci Sports Exerc, 31, pp. 1196-1204, (1999); Rohr G., Elaboration de batteries de tests d'évaluation spécifique du jeune fooballeur, (1992); Sale D.G., Testing strength and power, Physiological Testing of the High-Performance Athlete, pp. 21-106, (1991); Siri W.E., Body composition from fluid spaces and density: Analysis of methods, Techniques for Measuring Body Composition, pp. 223-244, (1961); Slattery K.M., Practical Tests for Monitoring Fatigue and Recovery in Triathletes, School of Leisure, Sport and Tourism, (2004); Slattery K.M., Wallace L.K., Murphy A.J., Coutts A.J., Physiological determinants of three-kilometer running performance in experienced triathletes, J Strength Cond Res, 20, pp. 47-52, (2006); Spinks C.D., Murphy A.J., Spinks W.L., Lockie R.G., The effects of resisted sprint training on acceleration performance and kinematics in soccer, rugby union, and Australian football players, J Strength Cond Res, 21, pp. 77-85, (2007); Spurrs R.W., Murphy A.J., Watsford M.L., The effect of plyometric training on distance running performance, Eur J Appl Physiol, 89, pp. 1-7, (2003); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer: An update, Sports Med, 35, pp. 501-536, (2005); Wisksff U., Castagna C., Helgerud J., Jones R., Hoff J., Maximal squat strength is strongly correlated to sprint-performance and vertical jump height in elite soccer players, Br J Sports Med, 38, pp. 285-288, (2004); Wisksff U., Helgerud J., Hoff J., Strength and endurance of elite soccer players, Med Sci Sports Exerc, 30, pp. 462-467, (1998)","K. Chamari; Research Unit on Evaluation, Sport, Health, National Centre of Medicine and Science in Sport, Tunis, Tunisia; email: castagnac@libero.it","","NSCA National Strength and Conditioning Association","10648011","","","18438217","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-48849109306" "Ford K.R.; Manson N.A.; Evans B.J.; Myer G.D.; Gwin R.C.; Heidt Jr. R.S.; Hewett T.E.","Ford, Kevin R. (7102539333); Manson, Neil A. (57197120262); Evans, Blake J. (15061260900); Myer, Gregory D. (6701852696); Gwin, Richelle C. (15061429600); Heidt Jr., Robert S. (6701562485); Hewett, Timothy E. (7005201943)","7102539333; 57197120262; 15061260900; 6701852696; 15061429600; 6701562485; 7005201943","Comparison of in-shoe foot loading patterns on natural grass and synthetic turf","2006","Journal of Science and Medicine in Sport","9","6","","433","440","7","96","10.1016/j.jsams.2006.03.019","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33750940791&doi=10.1016%2fj.jsams.2006.03.019&partnerID=40&md5=7085d10e265d5aea609f038d7b8c4013","Cincinnati Children's Hospital Research Foundation, Sports Medicine Biodynamics Center, Human Performance Laboratory, United States; Wellington Orthopaedic and Sports Medicine, United States; University of Cincinnati College of Medicine, Departments of Pediatrics and Orthopaedic Surgery, United States","Ford K.R., Cincinnati Children's Hospital Research Foundation, Sports Medicine Biodynamics Center, Human Performance Laboratory, United States; Manson N.A., Wellington Orthopaedic and Sports Medicine, United States; Evans B.J., Cincinnati Children's Hospital Research Foundation, Sports Medicine Biodynamics Center, Human Performance Laboratory, United States, Wellington Orthopaedic and Sports Medicine, United States; Myer G.D., Cincinnati Children's Hospital Research Foundation, Sports Medicine Biodynamics Center, Human Performance Laboratory, United States; Gwin R.C., Wellington Orthopaedic and Sports Medicine, United States; Heidt Jr. R.S., Wellington Orthopaedic and Sports Medicine, United States; Hewett T.E., Cincinnati Children's Hospital Research Foundation, Sports Medicine Biodynamics Center, Human Performance Laboratory, United States, University of Cincinnati College of Medicine, Departments of Pediatrics and Orthopaedic Surgery, United States","Synthetic playing surfaces with rubber or sand infill are now used on many athletic fields such as soccer, football and rugby. Although these surfaces may come closer to the mechanical characteristics of a true grass playing surface than the older turf designs, their potential effects on lower extremity biomechanics and related injury rates necessitate further study. The purpose of this study was to examine the effects of two surfaces (natural grass versus turf) on in-shoe foot loading patterns during cutting. Seventeen male football players were tested on a slalom course. An in-shoe pressure distribution measurement insole was used in the right shoe (14 stud, molded cleat) of each athlete. Individual cutting steps were extracted from each slalom trial and peak pressure and relative load calculated in nine distinct plantar regions of the foot. The turf condition had significantly higher peak pressures within the central forefoot (turf: 646.6 ± 172.6 kPa, grass: 533.3 ± 143.4 kPa, P = 0.017) and lesser toes (turf: 429.3 ± 200.9 kPa, grass: 348.1 ± 119.0 kPa, P = 0.043) compared to grass. In contrast, the relative load within the medial forefoot (turf: 27.2 ± 5.3%, grass: 30.2 ± 6.6%, P = 0.031) and lateral midfoot (turf: 3.4 ± 1.8%, grass: 4.1 ± 2.3%, P = 0.029) were higher during the grass condition. No differences between the grass and turf were found in maximal effort sprint times performed prior to the testing trials. This study demonstrates that playing surface significantly affects plantar loading during sport related activities. Further epidemiological investigation is warranted to determine the effects of playing surfaces on sport specific injury mechanisms. © 2006 Sports Medicine Australia.","Athletic injuries; Biomechanics; Foot; Football; Pressure; Sports medicine","Athletic Injuries; Biomechanics; Foot; Friction; Humans; Male; Poaceae; Pressure; Shoes; adolescent; adult; article; calculation; forefoot; grass; human; human experiment; intermethod comparison; male; normal human; pressure; school child; shoe; sport; surface property; turfgrass","NFLPA, NFL players playing surfaces opinion survey, (2004); Naunheim R., Parrott H., Standeven J., A comparison of artificial turf, J Trauma, 57, 6, pp. 1311-1314, (2004); Dixon S.J., Collop A.C., Batt M.E., Surface effects on ground reaction forces and lower extremity kinematics in running, Med Sci Sports Exerc, 32, 11, pp. 1919-1926, (2000); Nigg B.M., Segesser B., The influence of playing surfaces on the load on the locomotor system and on football and tennis injuries, Sports Med, 5, 6, pp. 375-385, (1988); Meyers M.C., Barnhill B.S., Incidence, causes, and severity of high school football injuries on FieldTurf versus natural grass: a 5-year prospective study, Am J Sports Med, 32, 7, pp. 1626-1638, (2004); Bramwell S.T., Requa R.K., Garrick J.G., High school football injuries: a pilot comparison of playing surfaces, Med Sci Sports, 4, 3, pp. 166-169, (1972); Stanitski C.L., McMaster J.H., Ferguson R.J., Synthetic turf and grass: a comparative study, J Sports Med, 2, 1, pp. 22-26, (1974); Andreasson G., Lindenberger U., Renstrom P., Peterson L., Torque developed at simulated sliding between sport shoes and an artificial turf, Am J Sports Med, 14, 3, pp. 225-230, (1986); Bowers Jr. K.D., Martin R.B., Cleat-surface friction on new and old AstroTurf, Med Sci Sports, 7, 2, pp. 132-135, (1975); Powell J.W., Schootman M., A multivariate risk analysis of selected playing surfaces in the National Football League: 1980 to 1989. An epidemiologic study of knee injuries, Am J Sports Med, 20, 6, pp. 686-694, (1992); Scranton Jr. P.E., Whitesel J.P., Powell J.W., Dormer S.G., Heidt Jr. R.S., Losse G., Et al., A review of selected noncontact anterior cruciate ligament injuries in the National Football League, Foot Ankle Int, 18, 12, pp. 772-776, (1997); Eils E., Streyl M., Linnenbecker S., Thorwesten L., Volker K., Rosenbaum D., Characteristic plantar pressure distribution patterns during soccer-specific movements, Am J Sports Med, 32, 1, pp. 140-145, (2004); Kernozek T.W., Zimmer K.A., Reliability and running speed effects of in-shoe loading measurements during slow treadmill running, Foot Ankle Int, 21, 9, pp. 749-752, (2000); Willson J.D., Kernozek T.W., Plantar loading and cadence alterations with fatigue, Med Sci Sports Exerc, 31, 12, pp. 1828-1833, (1999); Weist R., Eils E., Rosenbaum D., The influence of muscle fatigue on electromyogram and plantar pressure patterns as an explanation for the incidence of metatarsal stress fractures, Am J Sports Med, 32, 8, pp. 1893-1898, (2004); Cawley P.W., Heidt Jr. R.S., Scranton Jr. P.E., Losse G.M., Howard M.E., Physiologic axial load, frictional resistance, and the football shoe-surface interface, Foot Ankle Int, 24, 7, pp. 551-556, (2003); Heidt Jr. R.S., Dormer S.G., Cawley P.W., Scranton Jr. P.E., Losse G., Howard M., Differences in friction and torsional resistance in athletic shoe-turf surface interfaces, Am J Sports Med, 24, 6, pp. 834-842, (1996); Orchard J.W., Chivers I., Aldous D., Bennell K., Seward H., Rye grass is associated with fewer non-contact anterior cruciate ligament injuries than bermuda grass, Br J Sports Med, 39, 10, pp. 704-709, (2005); Orchard J.W., Powell J.W., Risk of knee and ankle sprains under various weather conditions in American football, Med Sci Sports Exerc, 35, 7, pp. 1118-1123, (2003); Strayer S.M., Reece S.G., Petrizzi M.J., Fractures of the proximal fifth metatarsal, Am Fam Physician, 59, 9, pp. 2516-2522, (1999); Arangio G.A., Xiao D., Salathe E.P., Biomechanical study of stress in the fifth metatarsal, Clin Biomech (Bristol, Avon), 12, 3, pp. 160-164, (1997); Barnett S., Cunningham J.L., West S., A comparison of vertical force and temporal parameters produced by an in-shoe pressure measuring system and a force platform, Clin Biomech, 16, 4, pp. 353-357, (2001); Forner Cordero A., Koopman H.J., van der Helm F.C., Use of pressure insoles to calculate the complete ground reaction forces, J Biomech, 37, 9, pp. 1427-1432, (2004)","K.R. Ford; Cincinnati Children's Hospital Research Foundation, Sports Medicine Biodynamics Center, Human Performance Laboratory, United States; email: kevin.ford@cchmc.org","","","14402440","","JSMSF","16672191","English","J. Sci. Med. Sport","Article","Final","","Scopus","2-s2.0-33750940791" "Marjoux D.; Baumgartner D.; Deck C.; Willinger R.","Marjoux, Daniel (23100171800); Baumgartner, Daniel (7006128748); Deck, Caroline (7004079006); Willinger, Rémy (56265497000)","23100171800; 7006128748; 7004079006; 56265497000","Head injury prediction capability of the HIC, HIP, SIMon and ULP criteria","2008","Accident Analysis and Prevention","40","3","","1135","1148","13","182","10.1016/j.aap.2007.12.006","https://www.scopus.com/inward/record.uri?eid=2-s2.0-42749094812&doi=10.1016%2fj.aap.2007.12.006&partnerID=40&md5=3721edeae0496e6212dd9b73fd52adeb","Université Louis Pasteur, IMFS, F-6700 Strasbourg, 2 rue Boussingault, France","Marjoux D., Université Louis Pasteur, IMFS, F-6700 Strasbourg, 2 rue Boussingault, France; Baumgartner D., Université Louis Pasteur, IMFS, F-6700 Strasbourg, 2 rue Boussingault, France; Deck C., Université Louis Pasteur, IMFS, F-6700 Strasbourg, 2 rue Boussingault, France; Willinger R., Université Louis Pasteur, IMFS, F-6700 Strasbourg, 2 rue Boussingault, France","The objective of the present study is to synthesize and investigate using the same set of sixty-one real-world accidents the human head injury prediction capability of the head injury criterion (HIC) and the head impact power (HIP) based criterion as well as the injury mechanisms related criteria provided by the simulated injury monitor (SIMon) and the Louis Pasteur University (ULP) finite element head models. Each accident has been classified according to whether neurological injuries, subdural haematoma and skull fractures were reported. Furthermore, the accidents were reconstructed experimentally or numerically in order to provide loading conditions such as acceleration fields of the head or initial head impact conditions. Finally, thanks to this large statistical population of head trauma cases, injury risk curves were computed and the corresponding regression quality estimators permitted to check the correlation of the injury criteria with the injury occurrences. As different kinds of accidents were used, i.e. footballer, motorcyclist and pedestrian cases, the case-independency could also be checked. As a result, FE head modeling provides essential information on the intracranial mechanical behavior and, therefore, better injury criteria can be computed. It is clearly shown that moderate and severe neurological injuries can only be distinguished with a criterion that is computed using intracranial variables and not with the sole global head acceleration. © 2007 Elsevier Ltd. All rights reserved.","Finite element head model; Impact biomechanics; Injury criteria","Accidents, Traffic; Adult; Biomechanics; Craniocerebral Trauma; Glasgow Coma Scale; Health Status Indicators; Humans; Injury Severity Score; Logistic Models; Male; Models, Statistical; Risk Assessment; Risk Factors; Soccer; Trauma Severity Indices; Biomechanics; Finite element method; Neurology; Regression analysis; adult; article; biomechanics; Glasgow coma scale; head injury; health survey; human; injury; injury scale; male; risk assessment; risk factor; sport; statistical model; statistics; traffic accident; Finite element head model; Impact biomechanics; Real-world accidents; Accident prevention","Dimasi F., Marcus J., Eppinger R., 3D anatomic brain model for relating cortical strains to automobile crash loading, Proceedings of the International Technical Conference on Experimental Safety Vehicles, NHTSA, vol. 2, pp. 916-923, (1991); Gurdjian E.S., Webster A., Head Injury, (1958); Harward R.N., Strength of Plastics and Glass, (1975); Hosey R.R., Liu Y.K., A homeomorphic finite element model of impact head and neck injury, I.C.P. Finite Elements Biomech., 2, pp. 379-401, (1980); Kent R.W., Funk J.R., data censoring and parametric distribution assignment in the development of injury risk functions from biomechanical data, SAE 2004, World Congress, (2004); Levin H.S., O'Donnel V.M., Grossman R.G., The Galveston Orientation and Amnesia Test: a practical scale to assess cognition after severe injury, J. Nerv. Ment. Dis., 167, pp. 674-684, (1979); Lissner H.R., Lebow M., Evans F.G., Experimental studies on the relation between acceleration and intracranial pressure changes in man, Surg. Gynecol. Obstet., 111, (1960); Ruan J.S., Kahlil T., King A.I., Human head dynamic response to side impact by finite element modelling, J. Biomech. Eng., 113, pp. 276-283, (1991); Takhounts E., Eppinger R., Campbell J.Q., Tannouns R.E., Power E.D., Shook L.S., On the development of the simon finite element head model, Stapp Car Crash J., 47, pp. 107-133, (2003); Teasdale G., Jennet B., Assessment of coma and impaired consciousness - a practical scale, Lancet, 2, pp. 81-84, (1974); Ward C.C., Chan M., Nahum A.M., Intracranial pressure: a brain injury criterion, SAE, (1980); Willinger R., Baumgartner D., Numerical and physical modelling of the human head under impact - toward new injury criterion, Int. J. Vehicle Des., 32, 1-2, pp. 94-115, (2001); Willinger R., Baumgartner D., Human head tolerance limits to specific injury mechanisms, Int. J. Crashworthiness, 6-8, pp. 605-617, (2003); Willinger R., Kang H.S., Diaw B.M., 3D human head finite element model validation against two experimental impacts, Ann. Biomed. Eng., 27, 3, pp. 403-410, (1999); Zhang L., Yang K., Dwarampudi R., Omori K., Li T., Chang K., Hardy W., Kalil T., King A., Recent advances in brain injury research: a new human head model development and validation., Stapp Car Crash J., 45, (2001)","D. Marjoux; Université Louis Pasteur, IMFS, F-6700 Strasbourg, 2 rue Boussingault, France; email: marjoux@imfs.u-strasbg.fr","","","00014575","","AAPVB","18460382","English","Accid. Anal. Prev.","Article","Final","","Scopus","2-s2.0-42749094812" "Daneshjoo A.; Mokhtar A.H.; Rahnama N.; Yusof A.","Daneshjoo, Abdolhamid (30267523100); Mokhtar, Abdul Halim (54391501700); Rahnama, Nader (56017323800); Yusof, Ashril (35331324700)","30267523100; 54391501700; 56017323800; 35331324700","The Effects of Comprehensive Warm-Up Programs on Proprioception, Static and Dynamic Balance on Male Soccer Players","2012","PLoS ONE","7","12","e51568","","","","107","10.1371/journal.pone.0051568","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84871196674&doi=10.1371%2fjournal.pone.0051568&partnerID=40&md5=dff127d1f923304570bc8d2e02135d3e","Sports Centre, University of Malaya, Kuala Lumpur, Malaysia; Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia; Faculty of Physical Education and Sport Science, University of Isfahan, Isfahan, Iran","Daneshjoo A., Sports Centre, University of Malaya, Kuala Lumpur, Malaysia; Mokhtar A.H., Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia; Rahnama N., Faculty of Physical Education and Sport Science, University of Isfahan, Isfahan, Iran; Yusof A., Sports Centre, University of Malaya, Kuala Lumpur, Malaysia","Purpose: The study investigated the effects of FIFA 11+ and HarmoKnee, both being popular warm-up programs, on proprioception, and on the static and dynamic balance of professional male soccer players. Methods: Under 21 year-old soccer players (n = 36) were divided randomly into 11+, HarmoKnee and control groups. The programs were performed for 2 months (24 sessions). Proprioception was measured bilaterally at 30°, 45° and 60° knee flexion using the Biodex Isokinetic Dynamometer. Static and dynamic balances were evaluated using the stork stand test and Star Excursion Balance Test (SEBT), respectively. Results: The proprioception error of dominant leg significantly decreased from pre- to post-test by 2.8% and 1.7% in the 11+ group at 45° and 60° knee flexion, compared to 3% and 2.1% in the HarmoKnee group. The largest joint positioning error was in the non-dominant leg at 30° knee flexion (mean error value = 5.047), (p<0.05). The static balance with the eyes opened increased in the 11+ by 10.9% and in the HarmoKnee by 6.1% (p<0.05). The static balance with eyes closed significantly increased in the 11+ by 12.4% and in the HarmoKnee by 17.6%. The results indicated that static balance was significantly higher in eyes opened compared to eyes closed (p = 0.000). Significant improvements in SEBT in the 11+ (12.4%) and HarmoKnee (17.6%) groups were also found. Conclusion: Both the 11+ and HarmoKnee programs were proven to be useful warm-up protocols in improving proprioception at 45° and 60° knee flexion as well as static and dynamic balance in professional male soccer players. Data from this research may be helpful in encouraging coaches or trainers to implement the two warm-up programs in their soccer teams. © 2012 Daneshjoo et al.","","Athletes; Biomechanics; Exercise; Humans; Knee; Leg; Male; Postural Balance; Proprioception; Running; Soccer; Young Adult; adolescent; adult; analytical error; article; athlete; body equilibrium; controlled study; dynamometer; exercise; exercise test; gastrocnemius muscle; human; human experiment; knee function; male; normal human; proprioception; running; star excursion balance test; stork stand test; training; warm up","Lee A., Lin W., Huang C., Impaired proprioception and poor static postural control in subjects with functional instability of the ankle, J Exerc Sci Fit, 4, pp. 117-125, (2006); Subasi S.S., Gelecek N., Aksakoglu G., Effects of different warm-up periods on knee proprioception and balance in healthy young individuals, J Sport Rehab, 17, pp. 186-205, (2008); Bressel E., Yonker J.C., Kras J., Heath E.M., Comparison of static and dynamic balance in female collegiate soccer, basketball, and gymnastics athletes, J Athl Train, 42, pp. 42-46, (2007); Gribble P.A., Tucker W.S., White P.A., Time-of-day influences on static and dynamic postural control, J Athl Train, 42, pp. 35-41, (2007); Gribble P.A., Hertel J., Considerations for normalizing measures of the star excursion balance test, Meas Phys Educ Exerc Sci, 7, pp. 89-100, (2003); Earl J., Hertel J., Lower-extremity muscle activation during the Star Excursion Balance Tests, J Sport Rehab, 10, pp. 93-104, (2001); Gribble P.A., Robinson R.H., Hertel J., Denegar C.R., The effects of gender and fatigue on dynamic postural control, J Sport Rehab, 18, pp. 240-257, (2009); Niessen M.H.M., Veeger D.J.H.E.J., Janssen T.W.J., Effect of body orientation on proprioception during active and passive motions, Am J Phys Med Rehab, 88, pp. 979-985, (2009); Aydin T., Yildiz Y., Yildiz C., Kalyon T., Effects of extensive training on female teenage gymnasts' active and passive ankle-joint position sense, J Sport Rehab, 11, pp. 1-11, (2002); Beets I.A.M., Mace M., Meesen R.L.J., Cuypers K., Levin O., Et al., Active versus Passive Training of a Complex Bimanual Task: Is Prescriptive Proprioceptive Information Sufficient for Inducing Motor Learning?, PLoS ONE, 7, (2012); Safran M.R., Harner C.D., Giraldo J.L., Lephart S.M., Borsa P.A., Et al., Effects of injury and reconstruction of the posterior cruciate ligament on proprioception and neuromuscular control, J Sport Rehab, 8, pp. 304-321, (1999); Barrack R.L., Skinner H.B., Buckley S.L., Proprioception in the anterior cruciate deficient knee, Am J Sport Med, 17, pp. 1-6, (1989); Tropp H., Ekstrand J., Gillquist J., Stabilometry in functional instability of the ankle and its value in predicting injury, Med Sci Sports Exerc, 16, pp. 64-66, (1984); Hubscher M., Zech A., Pfeifer K., Hansel F., Vogt L., Et al., Neuromuscular training for sports injury prevention: a systematic review, Med Sci Sports Exerc, 42, pp. 413-421, (2010); Ozenci A.M., Inanmaz E., Ozcanli H., Soyuncu Y., Samanci N., Et al., Proprioceptive comparison of allograft and autograft anterior cruciate ligament reconstructions, Knee Surg Sports Traumatol Arthrosc, 15, pp. 1432-1437, (2007); Davlin-Pater C., The effects of visual information and perceptual style on static and dynamic balance, Motor Control, 14, pp. 362-370, (2010); Giagazoglou P., Amiridis I.G., Zafeiridis A., Thimara M., Kouvelioti V., Et al., Static balance control and lower limb strength in blind and sighted women, Eur. J. Appl. Physiol, 107, pp. 571-579, (2009); Leavey V., Sandrey M., Dahmer G., Comparative effects of 6-week balance, gluteus medius strength, and combined programs on dynamic postural control, J Sport Rehab, 19, pp. 268-287, (2010); McLeod T., Armstrong T., Miller M., Sauers J.L., Balance improvements in female high school basketball players after a 6-week neuromuscular-training program, J Sport Rehab, 18, pp. 465-481, (2009); Gear W.S., Effect of different levels of localized muscle fatigue on knee position sense, J Sports Sci Med, 10, pp. 725-730, (2011); Soligard T., Myklebust G., Steffen K., Holme I., Silvers H., Et al., Comprehensive warm-up programme to prevent injuries in young female footballers: cluster randomised controlled trial, BMJ: Br Med J, 337, pp. 1-9, (2008); Kiani A., Hellquist E., Ahlqvist K., Gedeborg R., Michaelsson K., Et al., Prevention of soccer-related knee injuries in teenaged girls, Arch Intern Med, 170, pp. 43-49, (2010); Effgen S.K., Effect of an exercise program on the static balance of deaf children, Phys Ther, 61, pp. 873-877, (1981); Paterno M.V., Myer G.D., Ford K.R., Hewelt T., Neuromuscular training improves single-limb stability in young female athletes, J Orthop Sports Phys Ther, 34, pp. 305-316, (2004); Ricotti L., Ravaschio A., Break dance significantly increases static balance in 9 years-old soccer players, Gait Posture, 33, pp. 462-465, (2011); Hadzic V., Sattler T., Markovic G., Veselko M., Dervisevic E., The isokinetic strength profile of quadriceps and hamstrings in elite volleyball players, Isokinet Exerc Sci, 18, pp. 31-37, (2010); Rahnama N., Lees A., Bambaecichi E., A comparison of muscle strength and flexibility between the preferred and non-preferred leg in English soccer players, Ergonomics, 48, pp. 1568-1575, (2005); Steffen K., Bakka H., Myklebust G., Bahr R., Performance aspects of an injury prevention program: a ten week intervention in adolescent female football players, Scand J Med Sci Sports, 18, pp. 596-604, (2008); Akseki D., Akkaya G., Erduran M., Pinar H., Proprioception of the knee joint in patellofemoral pain syndrome, Acta Orthop Traumatol Turc, 42, pp. 316-321, (2004); Paschalis V., Nikolaidis M.G., Theodorou A.A., Giakas G., Jamurtas A.Z., Et al., Eccentric exercise affects the upper limbs more than the lower limbs in position sense and reaction angle, J Sports Sci, 28, pp. 33-43, (2010); Chen C.Y., Fu T.C., Hu C.F., Hsu C.C., Chen C.L., Et al., Influence of magnetic knee wraps on joint proprioception in individuals with osteoarthritis: a randomized controlled pilot trial, Clin Rehab, 25, pp. 228-237, (2011); Hertel J., Williams N.I., Olmsted-Kramer L.C., Leidy H.J., Putukian M., Neuromuscular performance and knee laxity do not change across the menstrual cycle in female athletes, Knee Surg Sports Traumatol Arthrosc, 14, pp. 817-822, (2006); Tsiganos G., Kalamvoki E., Smirniotis J., Effect of the chronically unstable ankle on knee joint position sense, Isokinet Exerc Sci, 16, pp. 75-79, (2008); Hardy L., Huxel K., Brucker J., Nesser T., Prophylactic ankle braces and star excursion balance measures in healthy volunteers, J Athl Train, 43, (2008); Hatzitaki V., Zlsi V., Kollias I., Kioumourtzoglou E., Perceptual-motor contributions to static and dynamic balance control in children, J Motor Behav, 34, pp. 161-170, (2002); Melrose D.R., Spaniol F.J., Bohling M.E., Bonnette R.A., Physiological and performance characteristics of adolescent club volleyball players, J Strength Cond Res, 21, pp. 481-486, (2007); McCurdy K., Langford G., The relationship between maximum unilateral squat strength and balance in young adult men and women, J Sports Sci Med, 5, pp. 282-288, (2006); Hrysomallis C., Balance ability and athletic performance, Sports Med, 41, pp. 221-232, (2011); Taube W., Gruber M., Gollhofer A., Spinal and supraspinal adaptations associated with balance training and their functional relevance, Acta Physiologica, 193, pp. 101-116, (2008); Holm I., Fosdahl M.A., Friis A., Risberg M.A., Myklebust G., Et al., Effect of neuromuscular training on proprioception, balance, muscle strength, and lower limb function in female team handball players, Clin J Sport Med, 14, pp. 88-94, (2004); Kato Y., Ikata T., Takai H., Takata S., Sairyo K., Et al., Effects of specific warm-up at various intensities on energy metabolism during subsequent exercise, J Sports Med and Phys Fit, 40, pp. 126-130, (2000); Amiri-Khorasani M., Abu Osman N.A., Yusof A., Acute effect of static and dynamic stretching on hip dynamic range of motion during instep kicking in professional soccer players, J Strength Cond Res, 25, pp. 1647-1652, (2011); Hessari F.F., Norasteh A.A., Daneshmandi H., Ortakand S.M., The Effect of 8 Weeks Core Stabilization Training Program on Balance in Deaf Students, Medicina Sportiva, 15, pp. 56-61, (2011); Baljinder S.B., Gaurav D., Parminderjeet K., An empirical study of backward walking treadmill training on static and dynamic balance in adolescent girls, Medicina Sportiva, 8, pp. 1743-1749, (2012); Fuentes C.T., Bastian A.J., Where is your arm? Variations in proprioception across space and tasks, J Neurophysiology, 103, pp. 164-171, (2010); Ansems G.E., Allen T.J., Proske U., Position sense at the human forearm in the horizontal plane during loading and vibration of elbow muscles, J Physiol, 576, pp. 445-455, (2006); Judge J.O., Lindsey C., Underwood M., Winsemius D., Balance improvements in older women: effects of exercise training, Phys Ther, 73, pp. 254-262, (1993); Lloyd D., Rationale for training programs to reduce anterior cruciate ligament injuries in Australian football, J Orthop Sports Phys Ther, 31, pp. 645-654, (2001); Nashner L., Shupert C., Horak F., Black F., Organization of posture controls: an analysis of sensory and mechanical constraints, Progress in Brain Research, 80, pp. 411-418, (1989); Nougier V., Bard C., Fleury M., Teasdale N., Contribution of central and peripheral vision to the regulation of stance, Gait Posture, 5, pp. 34-41, (1997); McKeon P.O., Ingersoll C.D., Kerrigan D.C., Saliba E., Bennett B.C., Et al., Balance training improves function and postural control in those with chronic ankle instability, Med Sci Sports Exerc, 40, pp. 1810-1819, (2008)","A. Daneshjoo; Sports Centre, University of Malaya, Kuala Lumpur, Malaysia; email: daneshjoo.hamid@gmail.com","","","19326203","","","23251579","English","PLoS ONE","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-84871196674" "Dörge H.C.; Bull Andersen T.; Sørensen H.; Simonsen E.B.; Aagaard H.; Dyhre-Poulsen P.; Klausen K.","Dörge, H.C. (36957167700); Bull Andersen, Thomas (6507644243); Sørensen, H. (36038149900); Simonsen, E.B. (57214018937); Aagaard, H. (6701828786); Dyhre-Poulsen, P. (6701438796); Klausen, K. (7004850743)","36957167700; 6507644243; 36038149900; 57214018937; 6701828786; 6701438796; 7004850743","EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick","1999","Scandinavian Journal of Medicine and Science in Sports","9","4","","195","200","5","85","10.1111/j.1600-0838.1999.tb00233.x","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0033176073&doi=10.1111%2fj.1600-0838.1999.tb00233.x&partnerID=40&md5=13454b5b94c78766f50876cbbacb0d04","Institute of Medical Anatomy C, Panum Institute, University of Copenhagen, Copenhagen, Denmark; Institute of Medical Physiology, Panum Institute, University of Copenhagen, Copenhagen, Denmark; Laboratory for Human Physiology, August Krogh Institute, University of Copenhagen, Copenhagen, Denmark; Lab. Funct. Anat., Biomech. Motor C., Institute of Medical Anatomy C, University of Copenhagen, DK-2200 Copenhagen N, Blegdamsvej 3, Denmark","Dörge H.C., Institute of Medical Anatomy C, Panum Institute, University of Copenhagen, Copenhagen, Denmark; Bull Andersen T., Institute of Medical Anatomy C, Panum Institute, University of Copenhagen, Copenhagen, Denmark, Lab. Funct. Anat., Biomech. Motor C., Institute of Medical Anatomy C, University of Copenhagen, DK-2200 Copenhagen N, Blegdamsvej 3, Denmark; Sørensen H., Institute of Medical Anatomy C, Panum Institute, University of Copenhagen, Copenhagen, Denmark; Simonsen E.B., Institute of Medical Anatomy C, Panum Institute, University of Copenhagen, Copenhagen, Denmark; Aagaard H., Institute of Medical Anatomy C, Panum Institute, University of Copenhagen, Copenhagen, Denmark; Dyhre-Poulsen P., Institute of Medical Physiology, Panum Institute, University of Copenhagen, Copenhagen, Denmark; Klausen K., Laboratory for Human Physiology, August Krogh Institute, University of Copenhagen, Copenhagen, Denmark","The purpose of the study was to develop a method to record intramuscular electromyogram (EMG) from the iliopsoas muscle and to relate this activity to the kinetics during the soccer place kick. Seven skilled soccer players performed 3 maximal velocity place kicks. The kicks were filmed with a high-speed camera (400 Hz) and EMG recordings were obtained from 5 muscles of the kicking leg, including wire electrodes inserted into the m. iliopsoas. The EMG signals were compared to the kinetics of the kicking leg, which were calculated from the digitised film. The results showed hardly any torque reversal about the hip joint before impact. Angular deceleration of the thigh segment did not increase the angular velocity of the shank (work -3.57 to 0.0%). M. iliopsoas was active during the entire kicking motion (average EMG 65.1-100.9%), even in the period when the thigh was decelerating. Wire electrodes can succesfully be applied to EMG recordings of fast unloaded movements.","Dynamics; EMG; M. iliopsoas; Soccer; Wire electrodes","Adult; Biomechanics; Electromyography; Hip Joint; Humans; Knee Joint; Leg; Muscle, Skeletal; Soccer; adult; article; biomechanics; electromyography; hip; human; knee; leg; physiology; skeletal muscle; sport","Herring R.M., Chapman A.E., Effects of changes in segmental values and timing of both torque and torque reversal in simulated throws, J Biomech, 25, pp. 1173-1184, (1992); Sorensen H., Zacho M., Simonsen E.B., Dyhre-Poulsen P., Klausen K., Dynamics of the martial arts high front kick, J Sports Sci, 14, pp. 483-495, (1996); Putnam C.A., A segment interaction analysis of proximalto-distal sequential segment motion patterns, Med Sci Sports Exerc, 23, pp. 130-144, (1991); Winter D.A., Biomechanics and Motor Control of Human Movement. 2nd Edn., (1990); Putnam C.A., Sequential motions of body segments in striking and throwing skills: Descriptions and explanations, J Biomech, 26, pp. 125-135, (1993); Andersson E., The role of the psoas and iliacus muscles for stability and movement of the lumbar spine, pelvis and hip, Scand J Med Sci Sports, 5, pp. 10-16, (1995); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 449-455, (1988); Clarke G.M., Statistics and Experimental Design, (1980); Putnam C.A., Interaction between segments during a kicking motion, Biomechanics VIII-B, pp. 688-694, (1983)","","","Blackwell Munksgaard","09057188","","SMSSE","10407926","English","Scand. J. Med. Sci. Sports","Article","Final","","Scopus","2-s2.0-0033176073" "Beaulieu M.L.; Lamontagne M.; Xu L.","Beaulieu, Mélanie L. (25937111100); Lamontagne, Mario (57206397765); Xu, Lanyi (7404744843)","25937111100; 57206397765; 7404744843","Lower limb muscle activity and kinematics of an unanticipated cutting manoeuvre: A gender comparison","2009","Knee Surgery, Sports Traumatology, Arthroscopy","17","8","","968","976","8","59","10.1007/s00167-009-0821-1","https://www.scopus.com/inward/record.uri?eid=2-s2.0-70349781398&doi=10.1007%2fs00167-009-0821-1&partnerID=40&md5=c3d2eafc25e252f388c6109a44655be1","School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, ON K1N 6N5, 125 University PVT, Canada; Department of Mechanical Engineering, Faculty of Engineering, University of Ottawa, Ottawa, ON, Canada; Device Surveillance Division, Medical Device Bureau, Health Canada, Ottawa, ON, Canada","Beaulieu M.L., School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, ON K1N 6N5, 125 University PVT, Canada; Lamontagne M., School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, ON K1N 6N5, 125 University PVT, Canada, Department of Mechanical Engineering, Faculty of Engineering, University of Ottawa, Ottawa, ON, Canada; Xu L., Device Surveillance Division, Medical Device Bureau, Health Canada, Ottawa, ON, Canada","This investigation compared the amplitude and the timing of the muscle activity of the lower limb, as well as the three-dimensional kinematics of the hip, knee and ankle joints, of male and female elite soccer players performing an unanticipated cutting manoeuvre. These data were recorded for 15 female and 15 male participants for five successful cutting manoeuvres. For this manoeuvre to be performed in an unanticipated manner, the participants were instructed to execute one of three tasks, which were signalled to them with a target board composed of three different coloured lights. Female participants performed the cutting manoeuvre with greater lateral gastrocnemius activity in comparison with the male participants. It was also observed that they contracted their vastus lateralis to a greater extent than their vastus medialis, whereas the men adopted the opposite strategy. These neuromuscular control strategies adopted by the female athletes may elucidate the reasons for which women struck the ground with a more abducted knee during the cutting task. Given that this knee position places greater strain on the anterior cruciate ligament, a restoration of the medial/lateral activation balance of the lower limb muscles may reduce one's risk of injury. © Springer-Verlag 2009.","Anterior cruciate ligament; Biomechanics; Electromyography; Gender; Kinematics; Knee joint","Adult; Biomechanics; Electromyography; Female; Humans; Imaging, Three-Dimensional; Joints; Lower Extremity; Male; Muscle Contraction; Muscle, Skeletal; Sex Factors; Soccer; adult; article; biomechanics; electromyography; female; human; joint; leg; male; muscle contraction; physiology; sex difference; skeletal muscle; sport; three dimensional imaging","Andriacchi T.P., Andersson G.B., Ortengren R., Mikosz R.P., A study of factors influencing muscle activity about the knee joint, J Orthop Res, 1, pp. 266-275, (1984); Arendt E.A., Agel J., Dick R., Anterior cruciate ligament injury patterns among collegiate men and women, J Athl Train, 34, pp. 86-92, (1999); Beaulieu M.L., Lamontagne M., Xu L., Gender differences in time-frequency EMG analysis of unanticipated cutting maneuvers, Med Sci Sports Exerc, 40, pp. 1795-1804, (2008); Benoit D.L., Ramsey D.K., Lamontagne M., Xu L., Wretenberg P., Renstrom P., Effect of skin movement artifact on knee kinematics during gait and cutting motions measured in vivo, Gait Posture, 24, pp. 152-164, (2006); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Med Sci Sports Exerc, 35, pp. 119-127, (2003); Boden B.P., Dean G.S., Feagin Jr. J.A., Garrett Jr. W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Bonato P., D'Alessio T., Knaflitz M., A statistical method for the measurement of muscle activation intervals from surface myoelectric signal during gait, IEEE Trans Biomed Eng, 45, pp. 287-299, (1998); Chappell J.D., Creighton R.A., Giuliani C., Yu B., Garrett W.E., Kinematics and electromyography of landing preparation in vertical stop-jump: Risks for noncontact anterior cruciate ligament injury, Am J Sports Med, 35, pp. 235-241, (2007); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (1988); De Luca C.J., The use of surface electromyography in biomechanics, J Appl Biomech, 13, pp. 135-163, (1997); Fleming B.C., Renstrom P.A., Ohlen G., Johnson R.J., Peura G.D., Beynnon B.D., Badger G.J., The gastrocnemius muscle is an antagonist of the anterior cruciate ligament, J Orthop Res, 19, pp. 1178-1184, (2001); Ford K.R., Myer G.D., Smith R.L., Vianello R.M., Seiwert S.L., Hewett T.E., A comparison of dynamic coronal plane excursion between matched male and female athletes when performing single leg landings, Clin Biomech (Bristol, Avon), 21, pp. 33-40, (2006); Hewett T.E., Myer G.D., Ford K.R., Heidt Jr. R.S., Colosimo A.J., McLean S.G., van den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes. Decreased impact forces and increased hamstring torques, Am J Sports Med, 24, pp. 765-773, (1996); Joseph M., Tiberio D., Baird J.L., Trojian T.H., Anderson J.M., Kraemer W.J., Maresh C.M., Knee valgus during drop jumps in National Collegiate Athletic Association Division I female athletes: The effect of a medial post, Am J Sports Med, 36, pp. 285-289, (2008); Koh T.J., Herzog W., Evaluation of voluntary and elicited dorsiflexor torque-angle relationships, J Appl Physiol, 79, pp. 2007-2013, (1995); Krosshaug T., Nakamae A., Boden B.P., Engebretsen L., Smith G., Slauterbeck J.R., Hewett T.E., Bahr R., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, Am J Sports Med, 35, pp. 359-367, (2007); Landry S.C., McKean K.A., Hubley-Kozey C.L., Stanish W.D., Deluzio K.J., Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated side-cut maneuver, Am J Sports Med, 35, pp. 1888-1900, (2007); Li G., Rudy T.W., Sakane M., Kanamori A., Ma C.B., Woo S.L., The importance of quadriceps and hamstring muscle loading on knee kinematics and in-situ forces in the ACL, J Biomech, 32, pp. 395-400, (1999); Lloyd D.G., Buchanan T.S., Strategies of muscular support of varus and valgus isometric loads at the human knee, J Biomech, 34, pp. 1257-1267, (2001); Lohmander L.S., Ostenberg A., Englund M., Roos H., High prevalence of knee osteoarthritis, pain, and functional limitations in female soccer players twelve years after anterior cruciate ligament injury, Arthritis Rheum, 50, pp. 3145-3152, (2004); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech (Bristol, Avon), 16, pp. 438-445, (2001); McLean S.G., Huang X., Su A., van den Bogert A.J., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clin Biomech (Bristol, Avon), 19, pp. 828-838, (2004); McLean S.G., Huang X., van den Bogert A.J., Investigating isolated neuromuscular control contributions to non-contact anterior cruciate ligament injury risk via computer simulation methods, Clin Biomech (Bristol, Avon), 23, pp. 926-936, (2008); McLean S.G., Lipfert S.W., van den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, pp. 1008-1016, (2004); Mihata L.C., Beutler A.I., Boden B.P., Comparing the incidence of anterior cruciate ligament injury in collegiate lacrosse, soccer, and basketball players: Implications for anterior cruciate ligament mechanism and prevention, Am J Sports Med, 34, pp. 899-904, (2006); Myklebust G., Engebretsen L., Braekken I.H., Skjolberg A., Olsen O.E., Bahr R., Prevention of anterior cruciate ligament injuries in female team handball players: A prospective intervention study over three seasons, Clin J Sport Med, 13, pp. 71-78, (2003); Neptune R.R., Wright I.C., van den Bogert A.J., Muscle coordination and function during cutting movements, Med Sci Sports Exerc, 31, pp. 294-302, (1999); O'Connor J.J., Can muscle co-contraction protect knee ligaments after injury or repair?, J Bone Joint Surg Br, 75, pp. 41-48, (1993); Pollard C.D., Davis I.M., Hamill J., Influence of gender on hip and knee mechanics during a randomly cued cutting maneuver, Clin Biomech (Bristol, Avon), 19, pp. 1022-1031, (2004); Sale D., Quinlan J., Marsh E., McComas A.J., Belanger A.Y., Influence of joint position on ankle plantarflexion in humans, J Appl Physiol, 52, pp. 1636-1642, (1982); Shultz S.J., ACL injury in the female athlete: A multifactorial problem that remains poorly understood, J Athl Train, 43, (2008); Sigward S.M., Powers C.M., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clin Biomech (Bristol, Avon), 21, pp. 41-48, (2006); Slauterbeck J.R., Fuzie S.F., Smith M.P., Clark R.J., Xu K., Starch D.W., Hardy D.M., The menstrual cycle, sex hormones, and anterior cruciate ligament injury, J Athl Train, 37, pp. 275-278, (2002); Smith T.O., Hunt N.J., Donell S.T., The reliability and validity of the Q-angle: A systematic review, Knee Surg Sports Traumatol Arthrosc, 16, pp. 1068-1079, (2008); Tillman M.D., Bauer J.A., Cauraugh J.H., Trimble M.H., Differences in lower extremity alignment between males and females. Potential predisposing factors for knee injury, J Sports Med Phys Fitness, 45, pp. 355-359, (2005); Wojtys E.M., Huston L.J., Boynton M.D., Spindler K.P., Lindenfeld T.N., The effect of the menstrual cycle on anterior cruciate ligament injuries in women as determined by hormone levels, Am J Sports Med, 30, pp. 182-188, (2002); Woltring H.J., A Fortran package for generalized, cross-validatory spline smoothing and differentiation, Adv Eng Softw, 8, pp. 104-107, (1986); Wretenberg P., Nemeth G., Lamontagne M., Lundin B., Passive knee muscle moment arms measured in vivo with MRI, Clin Biomech (Bristol, Avon), 11, pp. 439-446, (1996)","M. Lamontagne; School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, ON K1N 6N5, 125 University PVT, Canada; email: mlamon@uottawa.ca","","","14337347","","","19495727","English","Knee Surg. Sports Traumatol. Arthroscopy","Article","Final","","Scopus","2-s2.0-70349781398" "Brocherie F.; Millet G.P.; Girard O.","Brocherie, Franck (8320421900); Millet, Gregoire P. (56114934100); Girard, Olivier (55247058400)","8320421900; 56114934100; 55247058400","Neuro-mechanical and metabolic adjustments to the repeated anaerobic sprint test in professional football players","2015","European Journal of Applied Physiology","115","5","","891","903","12","56","10.1007/s00421-014-3070-z","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84939994276&doi=10.1007%2fs00421-014-3070-z&partnerID=40&md5=014a185610209065d8d0df462e9e02fd","ISSUL, Department of Physiology, University of Lausanne, Building Geopolis, Campus Dorigny, Lausanne, 1015, Switzerland; Athlete Health and Performance Research Centre, ASPETAR - Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar","Brocherie F., ISSUL, Department of Physiology, University of Lausanne, Building Geopolis, Campus Dorigny, Lausanne, 1015, Switzerland; Millet G.P., ISSUL, Department of Physiology, University of Lausanne, Building Geopolis, Campus Dorigny, Lausanne, 1015, Switzerland; Girard O., ISSUL, Department of Physiology, University of Lausanne, Building Geopolis, Campus Dorigny, Lausanne, 1015, Switzerland, Athlete Health and Performance Research Centre, ASPETAR - Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar","Purpose: This study aimed to determine the neuro-mechanical and metabolic adjustments in the lower limbs induced by the running anaerobic sprint test (the so-called RAST). Methods: Eight professional football players performed 6 × 35 m sprints interspersed with 10 s of active recovery on artificial turf with their football shoes. Sprinting mechanics (plantar pressure insoles), root mean square activity of the vastus lateralis (VL), rectus femoris (RF), and biceps femoris (BF) muscles (surface electromyography, EMG) and VL muscle oxygenation (near-infrared spectroscopy) were monitored continuously. Results: Sprint time, contact time and total stride duration increased from the first to the last repetition (+17.4, +20.0 and +16.6 %; all P < 0.05), while flight time and stride length remained constant. Stride frequency (−13.9 %; P < 0.001) and vertical stiffness decreased (−27.2 %; P < 0.001) across trials. Root mean square EMG activities of RF and BF (−18.7 and −18.1 %; P < 0.01 and 0.001, respectively), but not VL (−1.2 %; P > 0.05), decreased over sprint repetitions and were correlated with the increase in running time (r = −0.82 and −0.90; both P < 0.05). Together with a better maintenance of RF and BF muscles activation levels over sprint repetitions, players with a better repeated-sprint performance (lower cumulated times) also displayed faster muscle de- (during sprints) and re-oxygenation (during recovery) rates (r = −0.74 and −0.84; P < 0.05 and 0.01, respectively). Conclusion: The repeated anaerobic sprint test leads to substantial alterations in stride mechanics and leg-spring behaviour. Our results also strengthen the link between repeated-sprint ability and the change in neuromuscular activation as well as in muscle de- and re-oxygenation rates. © 2014, Springer-Verlag Berlin Heidelberg.","Electromyographic activity; Football; Near-infrared spectroscopy; Repeated-sprint ability; Spring-mass model characteristics","Adult; Athletes; Athletic Performance; Biomechanical Phenomena; Electromyography; Gait; Humans; Lactic Acid; Male; Muscle, Skeletal; Oxygen Consumption; Running; Soccer; Young Adult; lactic acid; adult; athlete; athletic performance; biomechanics; blood; electromyography; gait; human; male; oxygen consumption; physiology; running; skeletal muscle; soccer; young adult","Avela J., Komi P.V., Interaction between muscle stiffness and stretch reflex sensitivity after long-term stretch-shortening cycle exercise, Muscle Nerve, 21, pp. 1224-1227, (1998); Balciunas M., Stonkus S., Abrantes C., Sampaio J., Long term effects of different training modalities on power, speed, skill and anaerobic capacity in young male basketball players, J Sports Sci Med, 5, pp. 163-170, (2006); 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Zagatto A.M., Beck W.R., Gobatto C.A., Validity of the running anaerobic sprint test for assessing anaerobic power and predicting short-distance performances, J Strength Cond Res, 23, pp. 1820-1827, (2009)","","","Springer Verlag","14396319","","EJAPF","25481506","English","Eur. J. Appl. Physiol.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84939994276" "Sigward S.M.; Pollard C.D.; Powers C.M.","Sigward, S.M. (9735729200); Pollard, C.D. (7006671942); Powers, C.M. (7103284208)","9735729200; 7006671942; 7103284208","The influence of sex and maturation on landing biomechanics: Implications for anterior cruciate ligament injury","2012","Scandinavian Journal of Medicine and Science in Sports","22","4","","502","509","7","64","10.1111/j.1600-0838.2010.01254.x","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84864133823&doi=10.1111%2fj.1600-0838.2010.01254.x&partnerID=40&md5=0887e643e1b9f4ab34522f1fa8f38419","Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States; Department of Physical Therapy, California State University Long Beach, Long Beach, CA, United States","Sigward S.M., Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States; Pollard C.D., Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States, Department of Physical Therapy, California State University Long Beach, Long Beach, CA, United States; Powers C.M., Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States","During landing and cutting, females exhibit greater frontal plane moments at the knee (internal knee adductor moments or external knee abduction moments) and favor the use of the knee extensors over the hip extensors to attenuate impact forces when compared with males. However, it is not known when this biomechanical profile emerges. The purpose of this study was to compare landing biomechanics between sexes across maturation levels. One hundred and nineteen male and female soccer players (9-22 years) participated. Subjects were grouped based on maturational development. Lower extremity kinematics and kinetics were obtained during a drop-land task. Dependent variables included the average internal knee adductor moment and sagittal plane knee/hip moment and energy absorption ratios during the deceleration phase of landing. When averaged across maturation levels, females demonstrated greater internal knee adductor moments (0.06±0.03 vs 0.01±0.02Nm/kgm; P<0.005), knee/hip extensor moment ratios (2.0±0.1 vs 1.4±0.1Nm/kgm; P<0.001) and knee/hip energy absorption ratios (2.9±0.1 vs 1.96±0.1Nm/kgm; P<0.001) compared with males. Higher knee adductor moments combined with disproportionate use of knee extensors relative to hip extensors observed in females reflect a biomechanical pattern that increases anterior cruciate ligament loading. This biomechanical strategy already was established in pre-pubertal female athletes. © 2011 John Wiley & Sons A/S.","Drop land; Energy absorption; Knee adductor moment; Maturation","Adolescent; Age Factors; Anterior Cruciate Ligament; Biomechanical Phenomena; Child; Female; Humans; Knee Joint; Male; Musculoskeletal Development; Sex Factors; Soccer; Young Adult; adolescent; age; anterior cruciate ligament; biomechanics; child; female; human; injuries; knee; male; musculoskeletal development; physiology; sex difference; soccer; young adult","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in National Collegiate athletic association basketball and soccer, a 13-year review, 33, pp. 524-531, (2005); Bale P., Mayhew J.L., Piper F.C., Ball T.E., Willman M.K., Biological and performance variables in relation to age in male and female adolescent athletes, J Sports Med Phys Fitness, 32, pp. 142-148, (1992); Beunen G., Malina R.M., Growth and physical performance relative to the timing of the adolescent spurt, Exerc Sport Sci Rev, 16, pp. 503-540, (1988); Bresler B., Frankel J.P., The forces and moments in the leg during level walking, Trans ASME, 72, pp. 27-36, (1950); Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am J Sports Med, 30, pp. 261-267, (2002); Davies P.S., (1995); Davies P.L., Rose J.D., Motor skills of typically developing adolescents, awkwardness or improvement?, 20, pp. 19-42, (2000); Decker M.J., Torry M.R., Wyland D.J., Sterett W.I., Richard Steadman J., Gender differences in lower extremity kinematics, kinetics and energy absorption during landing, Clin Biomech, 18, pp. 662-669, (2003); DeVita P., Skelly W.A., Effect of landing stiffness on joint kinetics and energetics in the lower extremity, Med Sci Sports Exer, 24, pp. 108-115, (1992); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sport Exer, 35, pp. 1745-1750, (2003); Ford K.R., Myer G.D., Hewett T.E., Reliability of landing 3D motion analysis, implications for longitudinal analyses, 39, pp. 2021-2028, (2007); Ford K.R., Myer G.D., Smith R.L., Vianello R.M., Seiwert S.L., Hewett T.E., A comparison of dynamic coronal plane excursion between matched male and female athletes when performing single leg landings, Clin Biomech, 21, pp. 33-40, (2006); Garrett Jr W.E., Swiontkowski M.F., Weinstein J.N., Callaghan J., Rosier R.N., Berry D.J., Harrast J., Derosa G.P., American board of orthopaedic surgery practice of the orthopaedic surgeon, part-II, certification examination case mix, 88, pp. 660-667, (2006); Griffin L.Y., Albohm M.J., Arendt E.A., Bahr R., Beynnon B.D., DeMaio M., Dick R.W., Engebretsen L., Garrett Jr W.E., Hannafin J.A., Hewett T.E., Huston L.J., Ireland M.L., Johnson R.J., Lephart S., Mandelbaum B.R., Mann B.J., Marks P.H., Marshall S.W., Myklebust G., Noyes F.R., Powers C., Shields Jr C., Shultz S.J., Silvers H., Slauterbeck J., Taylor D.C., Teitz C.C., Wojtys E.M., Yu B., Understanding and preventing noncontact anterior cruciate ligament injuries, a review of the Hunt valley II meeting, January 2005, 34, pp. 1512-1532, (2006); Grood E.S., Suntay W.J., Noyes F.R., Butler D.L., Biomechanics of the knee-extension exercise. Effect of cutting the anterior cruciate ligament, Journal of Bone & Joint Surgery - American Volume, 66, pp. 725-734, (1984); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J Bone Joint Surg, 86, pp. 1601-1608, (2004); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., van den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes, a prospective study, 33, pp. 492-501, (2005); Understanding and preventing noncontact ACL injuries, (2007); Kernozek T.W., Torry M.R., H V.H., Cowley H., Tanner S., Gender differences in frontal and sagittal plane biomechanics during drop landings, Med Sci Sports Exerc, 37, pp. 1003-1012, (2005); Leone M., Comtois A.S., Validity and reliability of self-assessment of sexual maturity in elite adolescent athletes, J Sports Med Phys Fitness, 47, pp. 361-365, (2007); Lephart S., Ferris C., Riemann B., Myers J., Fu F., Gender differences in strength and lower extremity kinematics during landing, Clin Sport Med, 401, pp. 162-169, (2002); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech, 16, pp. 438-445, (2001); McLean S.G., Huang X., van den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping, implications for ACL injury, 20, pp. 863-870, (2005); McLean S.G., Lipfert S.W., van den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, pp. 1008-1016, (2004); Messina D.F., Farney W.C., DeLee J.C., The incidence of injury in Texas high school basketball. 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Its relationship to performance in the young athlete, Clin Sport Med, 14, pp. 483-502, (1995); Salci Y., Kentel B.B., Heycan C., Akin S., Korkusuz F., Comparison of landing maneuvers between male and female college volleyball players, Clin Biomech, 19, pp. 622-628, (2004); Schlossberger N.M., Turner R.A., Irwin Jr C.E., Validity of self-report of pubertal maturation in early adolescents, J Adolesc Health, 13, pp. 109-113, (1992); Schmitz K.E., Hovell M.F., Nichols J.F., Irvin V.L., Keating K., Simon G.M., Gehrman C., Jones K.L., A validation study of early adolescents' pubertal self-assessments, J Early Adolesc, 24, pp. 357-384, (2004); Sell T.C., Ferris C.M., Abt J.P., Tsai Y.-S., Myers J.B., Fu F.H., Lephart S.M., The effect of direction and reaction on the neuromuscular and biomechanical characteristics of the knee during tasks that simulate the noncontact anterior cruciate ligament injury mechanism, Am J Sports Med, 34, pp. 43-54, (2006); Sigward S.M., Powers C.M., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clin Biomech, 21, pp. 41-48, (2006); Swartz E.E., Decoster L.C., Russell P.J., Croce R.V., Effects of developmental stage and sex on lower extremity kinematics and vertical ground reaction forces during landing, J Athl Train, 40, pp. 9-14, (2005); Tanner J.M., Growth at adolescence, (1962); Yu B., McClure S.B., Onate J.A., Guskiewicz K.M., Kirkendall D.T., Garrett W.E., Age and gender effects on lower extremity kinematics of youth soccer players in a stop-jump task, Am J Sports Med, 33, pp. 1356-1364, (2005)","S.M. Sigward; Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 90089, CHP-155, United States; email: sigward@usc.edu","","","16000838","","SMSSE","21210853","English","Scand. J. Med. Sci. Sports","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84864133823" "Lynall R.C.; Clark M.D.; Grand E.E.; Stucker J.C.; Littleton A.C.; Aguilar A.J.; Petschauer M.A.; Teel E.F.; Mihalik J.P.","Lynall, Robert C. (55346075000); Clark, Michael D. (57189330891); Grand, Erin E. (57189319372); Stucker, Jaclyn C. (57189328978); Littleton, Ashley C. (55808877000); Aguilar, Alain J. (55190304500); Petschauer, Meredith A. (6506454747); Teel, Elizabeth F. (55748774800); Mihalik, Jason P. (8428192600)","55346075000; 57189330891; 57189319372; 57189328978; 55808877000; 55190304500; 6506454747; 55748774800; 8428192600","Head Impact Biomechanics in Women's College Soccer","2016","Medicine and Science in Sports and Exercise","48","9","","1772","1778","6","61","10.1249/MSS.0000000000000951","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84969213585&doi=10.1249%2fMSS.0000000000000951&partnerID=40&md5=d01f3e027e24aa07252ab685a58f9704","Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Human Movement Science Curriculum, Department of Allied Health Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Department of Kinesiology, Towson University, Towson, MD, United States; Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States","Lynall R.C., Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States, Human Movement Science Curriculum, Department of Allied Health Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Clark M.D., Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States, Human Movement Science Curriculum, Department of Allied Health Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Grand E.E., Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Stucker J.C., Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Littleton A.C., Department of Kinesiology, Towson University, Towson, MD, United States; Aguilar A.J., Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Petschauer M.A., Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Teel E.F., Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States, Human Movement Science Curriculum, Department of Allied Health Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Mihalik J.P., Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States, Human Movement Science Curriculum, Department of Allied Health Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States","Introduction There are limited nonlaboratory soccer head impact biomechanics data. This is surprising given soccer's global popularity. Epidemiological data suggest that female college soccer players are at a greater concussion injury risk than their male counterparts. Therefore, the purposes of our study were to quantify head impact frequency and magnitude during women's soccer practices and games in the National Collegiate Athletic Association and to characterize these data across event type, playing position, year on the team, and segment of game (first and second halves). Methods Head impact biomechanics were collected from female college soccer players (n = 22; mean ± SD age = 19.1 ± 0.1 yr, height = 168.0 ± 3.5 cm, mass = 63.7 ± 6.0 kg). We employed a helmetless head impact measurement device (X2 Biosystems xPatch) before each competition and practice across a single season. Peak linear and rotational accelerations were categorized based on impact magnitude and infsequently analyzed using appropriate nonparametric analyses. Results Overall, women's college soccer players experience approximately seven impacts per 90 min of game play. The overwhelming majority (90%) of all head impacts were categorized into our mildest linear acceleration impact classification (10g-20g). Interestingly, a higher percentage of practice impacts in the 20g-40g range compared with games (11% vs 7%) was observed. Conclusion Head impact biomechanics studies have provided valuable insights into understanding collision sports and for informing evidence-based rule and policy changes. These have included changing the football kickoff, ice hockey body checking ages, and head-to-head hits in both sports. Given soccer's global popularity, and the growing public concern for the potential long-term neurological implications of collision and contact sports, studying soccer has the potential to impact many athletes and the sports medicine professionals caring for them. © 2016 by the American College of Sports Medicine.","CONCUSSION; FOOTBALL; INJURY PREVENTION; SPORTS INJURY; SPORTS SAFETY","Acceleration; Athletes; Athletic Injuries; Biomechanical Phenomena; Brain Concussion; Female; Head; Humans; Prospective Studies; Soccer; Universities; Young Adult; acceleration; adult; biomechanics; classification; clinical article; college; competition; contact sport; female; football; head; height; human; ice hockey; quantitative study; season; soccer player; sports medicine; statistical model; athlete; biomechanics; brain concussion; head; injuries; pathophysiology; prospective study; soccer; sport injury; university; young adult","Abbas K., Shenk T.E., Poole V.N., Alteration of default mode network in high school football athletes due to repetitive subconcussive mild traumatic brain injury: A resting-state functional magnetic resonance imaging study, Brain Connect, 5, 2, pp. 91-101, (2015); 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Talavage T.M., Nauman E.A., Breedlove E.L., Functionally-detected cognitive impairment in high school football players without clinically-diagnosed concussion, J Neurotrauma, 31, 4, pp. 327-338, (2014); Tierney R.T., Higgins M., Caswell S.V., Sex differences in head acceleration during heading while wearing soccer headgear, J Athl Train, 43, 6, pp. 578-584, (2008); Zetterberg H., Jonsson M., Rasulzada A., No neurochemical evidence for brain injury caused by heading in soccer, Br J Sports Med, 41, 9, pp. 574-577, (2007); Zuckerman S.L., Kerr Z.Y., Yengo-Kahn A., Wasserman E., Covassin T., Solomon G.S., Epidemiology of sports-related concussion in NCAA athletes from 2009-2010 to 2013-2014: Incidence, recurrence, and mechanisms, Am J Sports Med, 43, 11, pp. 2654-2662, (2015)","J.P. Mihalik; 2201 Stallings-Evans Sports Medicine Center, Campus B. 8700, Chapel Hill, 27599, United States; email: jmihalik@email.unc.edu","","Lippincott Williams and Wilkins","01959131","","MSCSB","27187102","English","Med. Sci. Sports Exerc.","Article","Final","","Scopus","2-s2.0-84969213585" "Edwards S.; Steele J.R.; Cook J.L.; Purdam C.R.; McGhee D.E.","Edwards, Suzi (7401520377); Steele, Julie R. (7402403999); Cook, Jill L. (7404184250); Purdam, Craig R. (36822639800); McGhee, Deirdre E. (15136325400)","7401520377; 7402403999; 7404184250; 36822639800; 15136325400","Lower limb movement symmetry cannot be assumed when investigating the stop-jump landing","2012","Medicine and Science in Sports and Exercise","44","6","","1123","1130","7","45","10.1249/MSS.0b013e31824299c3","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84861520300&doi=10.1249%2fMSS.0b013e31824299c3&partnerID=40&md5=95960ac8cc7b65100154581d816094b5","School of Human Movement Studies, Charles Sturt University, Bathurst, NSW 2795, Panorama Ave, Australia; Biomechanics Research Laboratory, University of Wollongong, NSW, Australia; Department of Physiotherapy, Monash University, Clayton, VIC, Australia; Australian Institute of Sport, Canberra, ACT, Australia","Edwards S., School of Human Movement Studies, Charles Sturt University, Bathurst, NSW 2795, Panorama Ave, Australia; Steele J.R., Biomechanics Research Laboratory, University of Wollongong, NSW, Australia; Cook J.L., Department of Physiotherapy, Monash University, Clayton, VIC, Australia; Purdam C.R., Australian Institute of Sport, Canberra, ACT, Australia; McGhee D.E., Biomechanics Research Laboratory, University of Wollongong, NSW, Australia","Purpose: When investigating lower limb landing biomechanics, researchers often assume movement symmetry between a participant's right and left lower limbs for the simplicity of data collection and analysis, although landing tasks often involve dual-limb motion. However, whether lower limb symmetry can be assumed when investigating dynamic, sport-specific movements such as the stop-jump has not been investigated. Therefore, this study aimed to determine whether there were any significant differences in selected kinetic, kinematic, and muscle activation patterns characterizing lower limb biomechanics displayed by the dominant limb compared with the nondominant limb of participants during a stop-jump task. Methods: Sixteen male athletes with normal patellar tendons on diagnostic imaging performed five successful stop-jump trials. Patellar tendon forces (FPT), ground reaction forces, three-dimensional kinematics, and EMG activity of seven lower limb muscles were recorded for the dominant and nondominant lower limbs during each trial. Results: During the horizontal landing phase, the dominant lower limb sustained a significantly higher FPT and peak net knee joint extension moment compared with the nondominant lower limb. Furthermore, during the vertical landing phase, the dominant lower limb sustained significantly lower vertical but higher posterior ground reaction forces compared with the nondominant lower limb. Other variables did not significantly vary as a function of lower limb dominance. Conclusions: It is recommended that researchers clearly identify their primary outcome variables and ensure that their experimental design, particularly in terms of lower limb dominance, provides an appropriate framework to investigate possible mechanics underlying unilateral and bilateral knee joint injuries during dual-limb movements such as the stop-jump task. © 2012 by the American College of Sports Medicine.","biomechanics; experimental design; knee; Patellar tendinopathy; patellar tendon","Basketball; Biomechanics; Deceleration; Dominance, Cerebral; Electromyography; Humans; Leg; Male; Movement; Muscle, Skeletal; Patellar Ligament; Range of Motion, Articular; Soccer; Stress, Mechanical; Young Adult; adult; article; basketball; biomechanics; deceleration; echography; electromyography; hemispheric dominance; human; joint characteristics and functions; leg; male; mechanical stress; movement (physiology); patella ligament; physiology; skeletal muscle; sport","Agel J., Evans T.A., Dick R., Putukian M., Marshall S.W., Descriptive epidemiology of collegiate men's soccer injuries: National Collegiate Athletic Association Injury Surveillance System 1988-1989 through 2002-2003, J Athlet Train, 42, 2, pp. 270-277, (2007); Basmajian J.V., Gopal D.N., Ghista D.N., Electrodiagnostic model for motor unit action potential (MUAP) generation, Am J Phys Med, 64, 6, pp. 279-294, (1985); Bennell K., Talbot R., Wajswelner H., Techovanich W., Kelly D., Intra-rater and inter-rater reliability of a weight-bearing lunge measure of ankle dorsiflexion, Aust J Physiother, 44, 3, pp. 175-180, (1998); Bisseling R.W., Hof A.L., Handling of impact forces in inverse dynamics, J Biomech, 39, 13, pp. 2438-2444, (2006); Chappell J.D., Creighton R.A., Giuliani C., Yu B., Garrett W.E., Kinematics and electromyography of landing preparation in vertical stop-jump: Risks for noncontact anterior cruciate ligament injury, Am J Sports Med, 35, 2, pp. 235-241, (2007); Chappell J.D., Herman D.C., Knight B.S., Kirkendall D.T., Garrett W.E., Yu B., Effect of fatigue on knee kinetics and kinematics in stop-jump tasks, Am J Sports Med, 33, 7, pp. 1022-1029, (2005); Chappell J.D., Limpisvasti O., Effect of a neuromuscular training program on the kinetics and kinematics of jumping tasks, Am J Sports Med, 36, 6, pp. 1081-1086, (2008); Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am J Sports Med, 30, 2, pp. 261-267, (2002); Cohen J., Statistical Power Analysis for the Behavioral Sciences, pp. 20-27, (1988); Cook J.L., Khan K.M., Kiss Z.S., Griffiths L., Patellar tendinopathy in junior basketball players: A controlled clinical and ultrasonographic study of 268 patellar tendons in players aged 14-18 years, Scand J Med Sci Sports, 10, 4, pp. 216-220, (2000); Cook J.L., Malliaras P., De Luca J., Ptasznik R., Morris M., Vascularity and pain in the patellar tendon of adult jumping athletes: A 5 month longitudinal study, Br J Sports Med, 39, 7, pp. 458-461, (2005); Cowling E., Steele J.R., Is lower limb muscle synchrony during landing affected by gender? Implications for variations in ACL injury rates, J Electromyogr Kinesiol, 11, 4, pp. 263-268, (2001); Crossley K.M., Thancanamootoo K., Metcalf B.R., Cook J.L., Purdam C.R., Warden S.J., Clinical features of patellar tendinopathy and their implications for rehabilitation, J Orthop Res, 25, 9, pp. 1164-1175, (2007); Dick R., Hertel J., Agel J., Grossman J., Marshall S.W., Descriptive epidemiology of collegiate men's basketball injuries: National Collegiate Athletic Association Injury Surveillance System 1988-1989 through 2003-2004, J Athlet Train, 42, 2, pp. 194-201, (2007); Edwards S., Steele J.R., McGhee D.E., Does a drop landing represent a whole skill landing and is this moderated by fatigue?, Scand J Med Sci Sports, 20, 3, pp. 516-523, (2010); Edwards S., Steele J.R., McGhee D.E., Cook J.L., Purdam C., Munro B.J., Characterising patellar tendon loads during dynamic landings, Scand J Med Sci Sports, 22, pp. 2-11, (2012); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, 10, pp. 1745-1750, (2003); Gaida J.E., Cook J.L., Bass S.L., Austen S., Kiss Z.S., Are unilateral and bilateral patellar tendinopathy distinguished by differences in anthropometry, body composition or muscle strength in elite female basketball players?, Br J Sports Med, 38, 5, pp. 581-585, (2004); Herman D.C., Weinhold P.S., Guskiewicz K.M., Garrett W.E., Yu B., Padua D.A., The effects of strength training on the lower extremity biomechanics of female recreational athletes during a stop-jump task, Am J Sports Med, 36, 4, pp. 733-740, (2008); Herzog W., Read L.J., Lines of action and moment arms of the major force-carrying structures crossing the human knee joint, J Anat, 182, 2, pp. 213-230, (1993); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes. A prospective study, Am J Sports Med, 27, 6, pp. 699-706, (1999); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes. Decreased impact forces and increased hamstring torques, Am J Sports Med, 24, 6, pp. 765-773, (1996); Karamanidis K., Arampatzis A., Bruggemann G.-P., Symmetry and reproducibility of kinematic parameters during various running techniques, Med Sci Sports Exerc, 35, 6, pp. 1009-1016, (2003); Kuster M., Wood G.A., Sakurai S., Blatter G., Nicola Cerulli Young Researchers Award. Downhill walking: A stressful task for the anterior cruciate ligament? A biomechanical study with clinical implications, Knee Surg Sports Traumatol Arthrosc, 2, 1, pp. 2-7, (1994); Lavagnino M., Arnoczky S.P., Elvin N., Dodds J., Patellar tendon strain is increased at the site of the jumpers knee lesion during knee flexion and tendon loading, Am J Sports Med, 36, 11, pp. 2110-2118, (2008); Matava M.J., Freehill A.K., Grutzner S., Shannon W., Limb dominance as a potential etiologic factor in noncontract anterior cruciate ligament tears, J Knee Surg, 15, 1, pp. 11-16, (2002); McLean S.G., Felin R.E., Suedekum N., Calabrese G., Passerallo A., Joy S., Impact of fatigue on gender-based high-risk landing strategies, Med Sci Sports Exerc, 39, 3, pp. 502-514, (2007); McNitt-Gray J.L., Yokoi T., Milward C., Landing strategy adjustments made by female gymnasts in response to drop height and mat composition, J Appl Biomech, 9, 3, pp. 173-190, (1993); Menegaldo L.L., De Toledo Fleury A., Weber H.I., Moment arms and musculotendon lengths estimation for a three-dimensional lowerlimb model, J Biomech, 37, 9, pp. 1447-1453, (2004); Nisell R., Ekholm J., Patellar forces during knee extension, Scand J Rehabil Med, 17, 2, pp. 63-74, (1985); Richards D.P., Ajemian S.V., Wiley J.P., Zernicke R.F., Knee joint dynamics predict patellar tendinitis in elite volleyball players, Am J Sports Med, 24, 5, pp. 676-683, (1996); Sadeghi H., Allard P., Prince F., Labelle H., Symmetry and limb dominance in able-bodied gait: A review, Gait Posture, 12, 1, pp. 34-45, (2000); Sanchis-Alfonso V., Rosello-Sastre E., Subias-Lopez A., Neuroanatomic basis for pain in patellar tendinosis (""jumper's knee""): A neuroimmunohistochemical study, Am J Knee Surg, 14, 3, pp. 174-177, (2001); Schot P.K., Bates B.T., Dufek J.S., Bilateral performance symmetry during drop landing: A kinetic analysis, Med Sci Sports Exerc, 26, 9, pp. 1153-1159, (1994); Sell T.C., Ferris C.M., Abt J.P., Et al., The effect of direction and reaction on the neuromuscular and biomechanical characteristics of the knee during tasks that simulate the noncontact anterior cruciate ligament injury mechanism, Am J Sports Med, 34, 1, pp. 43-54, (2006); Sell T.C., Ferris C.M., Abt J.P., Et al., Predictors of proximal tibia anterior shear force during a vertical stop-jump, J Orthop Res, 25, 12, pp. 1589-1597, (2007); Witvrouw E., Bellemans J., Lysens R., Danneels L., Cambier D., Intrinsic risk factors for the development of patellar tendinitis in an athletic population. A two-year prospective study, Am J Sports Med, 29, 2, pp. 190-195, (2001); Yu B., Herman D., Preston J., Lu W., Kirkendall D.T., Garrett W.E., Immediate effects of a knee brace with a constraint to knee extension on knee kinematics and ground reaction forces in a stop-jump task, Am J Sports Med, 32, 5, pp. 1136-1143, (2004); Yu B., Lin C., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clin Biomech, 21, 3, pp. 297-305, (2006); Yu B., McClure S.B., Onate J.A., Guskiewicz K.M., Kirkendall D.T., Garrett W.E., Age and gender effects on lower extremity kinematics of youth soccer players in a stop-jump task, Am J Sports Med, 33, 9, pp. 1356-1364, (2005)","S. Edwards; School of Human Movement Studies, Charles Sturt University, Bathurst, NSW 2795, Panorama Ave, Australia; email: suzedwards@csu.edu.au","","","15300315","","MSCSB","22595986","English","Med. Sci. Sports Exerc.","Article","Final","","Scopus","2-s2.0-84861520300" "Mornieux G.; Gehring D.; Fürst P.; Gollhofer A.","Mornieux, Guillaume (12142812400); Gehring, Dominic (36763456900); Fürst, Patrick (56124417900); Gollhofer, Albert (55851165900)","12142812400; 36763456900; 56124417900; 55851165900","Anticipatory postural adjustments during cutting manoeuvres in football and their consequences for knee injury risk","2014","Journal of Sports Sciences","32","13","","1255","1262","7","42","10.1080/02640414.2013.876508","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904043086&doi=10.1080%2f02640414.2013.876508&partnerID=40&md5=9ffdc384e43b04daaecd59fe4d5ee4b3","Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany","Mornieux G., Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany; Gehring D., Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany; Fürst P., Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany; Gollhofer A., Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany","Anticipatory postural adjustments (APAs), i.e. preparatory positioning of the head, the trunk and the foot, are essential to initiate cutting manoeuvres during football games. The aim of the present study was to determine how APA strategies during cutting manoeuvres are influenced by a reduction of the time available to prepare the movement.Thirteen football players performed different cutting tasks, with directions of cutting either known prior to the task or indicated by a light signal occurring 850, 600 or 500 ms before ground contact.With less time available to prepare the cutting manoeuvre, the head was less orientated towards the cutting direction (P = 0.033) and the trunk was even more rotated in the opposite direction (P = 0.002), while the foot placement was not significantly influenced. Moreover, the induced higher lateral trunk flexion correlated with the increased knee abduction moment (r = 0.41; P = 0.009).Increasing lateral trunk flexion is the main strategy used to successfully perform a cutting manoeuvre when less time is available to prepare the movement. However, higher lateral trunk flexion was associated with an increased knee abduction moment and therefore an increased knee injury risk. Reducing lateral trunk flexion during cutting manoeuvres should be part of training programs seeking the optimisation of APAs. © 2014 Taylor & Francis.","change of direction; head rotation; knee abduction moment; step width; trunk","Adult; Anticipation, Psychological; Biomechanical Phenomena; Foot; Head; Hip; Humans; Knee; Knee Injuries; Male; Movement; Posture; Risk Factors; Soccer; Torso; Young Adult; adult; anticipation; biomechanics; body posture; foot; head; hip; human; knee; knee injury; male; movement (physiology); pathophysiology; physiology; risk factor; soccer; trunk; young adult","Alentorn-Geli E., Myer G.D., Silvers H.J., Samitier G., Romero D., Lazaro-Haro C., Cugat R., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: Mechanisms of injury and underlying risk factors, Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA, 17, 7, pp. 705-729, (2009); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Medicine and Science in Sports and Exercise, 35, 1, pp. 119-127, (2003); Besier T.F., Lloyd D.G., Ackland T.R., Cochrane J.L., Anticipatory effects on knee joint loading during running and cutting maneuvers, Medicine and Science in Sports and Exercise, 33, 7, pp. 1176-1181, (2001); Brown T.N., Palmieri-Smith R.M., McLean S.G., Sex and limb differences in hip and knee kinematics and kinetics during anticipated and unanticipated jump landings: Implications for anterior cruciate ligament injury, British Journal of Sports Medicine, 43, 13, pp. 1049-1056, (2009); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Changing sidestep cutting technique reduces knee valgus loading, The American Journal of Sports Medicine, 37, 11, pp. 2194-2200, (2009); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Russo K.A., The effect of technique change on knee loads during sidestep cutting, Medicine and Science in Sports and Exercise, 39, 10, pp. 1765-1773, (2007); Fleischmann J., Gehring D., Mornieux G., Gollhofer A., Load-dependent movement regulation of lateral stretch shortening cycle jumps, European Journal of Applied Physiology, 110, 1, pp. 177-187, (2010); Gabbett T., Benton D., Reactive agility of rugby league players, Journal of Science and Medicine in Sport/Sports Medicine Australia, 12, 1, pp. 212-214, (2009); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, Journal of Biomechanical Engineering, 105, 2, pp. 136-144, (1983); Hewett T.E., Myer G.D., The mechanistic connection between the trunk, hip, knee, and anterior cruciate ligament injury, Exercise and Sport Sciences Reviews, 39, 4, pp. 161-166, (2011); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, The American Journal of Sports Medicine, 33, 4, pp. 492-501, (2005); Hicheur H., Vieilledent S., Berthoz A., Head motion in humans alternating between straight and curved walking path: Combination of stabilizing and anticipatory orienting mechanisms, Neuroscience letters, 383, 1-2, pp. 87-92, (2005); Houck J.R., Duncan A., Haven K.E., Comparison of frontal plane trunk kinematics and hip and knee moments during anticipated and unanticipated walking and side step cutting tasks, Gait & Posture, 24, 3, pp. 314-322, (2006); Jamison S.T., Pan X., Chaudhari A.M.W., Knee moments during run-to-cut maneuvers are associated with lateral trunk positioning, Journal of Biomechanics, 45, 11, pp. 1881-1885, (2012); Jindrich D.L., Qiao M., Maneuvers during legged locomotion, Chaos (Woodbury, N.Y.), 19, 2, (2009); Leardini A., Biagi F., Belvedere C., Benedetti M.G., Quantitative comparison of current models for trunk motion in human movement analysis, Clinical Biomechanics (Bristol, Avon), 24, 7, pp. 542-550, (2009); Olsen O.-E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, The American Journal of Sports Medicine, 32, 4, pp. 1002-1012, (2004); Patla A.E., Adkin A., Ballard T., Online steering: Coordination and control of body center of mass, head and body reorientation, Experimental Brain Research, 129, 4, pp. 629-634, (1999); Sigward S.M., Powers C.M., Loading characteristics of females exhibiting excessive valgus moments during cutting, Clinical Biomechanics (Bristol, Avon), 22, 7, pp. 827-833, (2007); Sreenivasa M.N., Frissen I., Souman J.L., Ernst M.O., Walking along curved paths of different angles: The relationship between head and trunk turning, Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale, 191, 3, pp. 313-320, (2008); Vallis L.A., McFadyen B.J., Locomotor adjustments for circumvention of an obstacle in the travel path, Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale, 152, 3, pp. 409-414, (2003); Vallis L.A., McFadyen B.J., Children use different anticipatory control strategies than adults to circumvent an obstacle in the travel path, Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale, 167, 1, pp. 119-127, (2005); Vanrenterghem J., Venables E., Pataky T., Robinson M., The effect of running speed on knee mechanical loading in females during side cutting, Journal of Biomechanics, 45, 14, pp. 2444-2449, (2012); Wheeler K.W., Sayers M.G.L., Modification of agility running technique in reaction to a defender in rugby union, Journal of Sports Science and Medicine, 9, pp. 445-451, (2010); Wu G., Siegler S., Allard P., Kirtley C., Leardini A., Rosenbaum D., Stokes I., ISB recommendation on definitions of joint coordinate system of various joints for the reporting of human joint motion-part I: Ankle, hip and spine, Journal of Biomechanical Engineering, 35, pp. 543-548, (2002); Xu D., Carlton L.G., Rosengren K.S., Anticipatory postural adjustments for altering direction during walking, Journal of Motor Behavior, 36, 3, pp. 316-326, (2004)","G. Mornieux; Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany; email: guillaume.mornieux@univ-lorraine.fr","","Routledge","02640414","","JSSCE","24742137","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84904043086" "Munro A.; Herrington L.; Comfort P.","Munro, Allan (36194098300); Herrington, Lee (7004230643); Comfort, Paul (26767602800)","36194098300; 7004230643; 26767602800","Comparison of landing knee valgus angle between female basketball and football athletes: Possible implications for anterior cruciate ligament and patellofemoral joint injury rates","2012","Physical Therapy in Sport","13","4","","259","264","5","46","10.1016/j.ptsp.2012.01.005","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84867570757&doi=10.1016%2fj.ptsp.2012.01.005&partnerID=40&md5=2a51f5bce81d21ba732adfa0fb516de3","School of Health Sciences, University of Salford, United Kingdom","Munro A., School of Health Sciences, University of Salford, United Kingdom; Herrington L., School of Health Sciences, University of Salford, United Kingdom; Comfort P., School of Health Sciences, University of Salford, United Kingdom","Objective: To evaluate landing strategies of female football and basketball athletes with relation to possible injury mechanisms and disparity in injury. Design: Descriptive laboratory study. Participants: 52 female football players and 41 female basketball players. Main outcome measures: Frontal plane projection angle (FPPA) was measured during the single leg land (SLL) and drop jump (DJ) screening tasks. Results: 2 × 2 × 2 mixed factorial ANOVA showed significant main effects were observed for sport, whilst significant interaction effects were seen between sport and task. Females in both sports exhibited significantly greater FPPA values during the SLL task than the DJ task (p < 0.001). Basketball players demonstrated significantly greater FPPA values during SLL than football players (p < 0.001), whilst no differences were found between sports in the DJ task (p = 0.328). Conclusion: Female basketball players display greater FPPA values during unilateral landing tasks than female football players which may reflect the greater ACL injury occurrence in this population. Injury prevention programs in these athletes should incorporate unilateral deceleration and landing tasks and should consider the specific injury mechanisms in each sport. © 2012 Elsevier Ltd.","ACL; Frontal plane projection angle; Knee injuries; Knee valgus; PFPS; Risk factors","Analysis of Variance; Anterior Cruciate Ligament; Athletic Injuries; Basketball; Biomechanics; Female; Great Britain; Humans; Patellofemoral Joint; Risk Factors; Soccer; Statistics as Topic; Young Adult; accident prevention; adult; analysis of variance; analytical parameters; anterior cruciate ligament injury; article; athlete; basketball; comparative study; descriptive research; female; football; human; human experiment; jumping; knee injury; patellofemoral joint; priority journal; risk assessment; task performance; valgus knee","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: a 13-year review, American Journal of Sports Medicine, 33, 4, pp. 524-530, (2005); Agel J., Olson D.E., Dick R., Arendt E.A., Marshall S.W., Sikka R.S., Descriptive epidemiology of collegiate women's basketball injuries: National Collegiate Athletic Association Injury Surveillance System, 1988-1989 through 2003-2004, Journal of Athletic Training, 42, 2, pp. 202-210, (2007); Barber-Westin S.D., Galloway M., Noyes F.R., Corbett G., Walsh C., Assessment of lower limb neuromuscular control in prepubescent athletes, American Journal of Sports Medicine, 33, 12, pp. 1853-1860, (2005); Berns G.S., Hull M.L., Patterson H.A., Strain in the anteromedial bundle of the anterior cruciate ligament under combination loading, Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society, 10, 2, pp. 167-176, (1992); Beutler A.I., de la Motte S.J., Marshall S.W., Padua D.A., Boden B.P., Muscle strength and qualitative jump-landing differences in male and female military cadets: the jump-ACL study, Journal of Sports Science and Medicine, 8, pp. 663-671, (2009); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Boling M.C., Padua D.A., Marshall S.W., Guskiewicz K., Pyne S., Beutler A., A prospective investigation of biomechanical risk factors for patellofemoral pain syndrome the joint undertaking to monitor and prevent ACL injury (JUMP-ACL) cohort, American Journal of Sports Medicine, 37, 11, pp. 2108-2116, (2009); Boling M., Padua D., Marshall S., Guskiewicz K., Pyne S., Beutler A., Gender differences in the incidence and prevalence of patellofemoral pain syndrome, Scandinavian Journal of Medicine & Science in Sports, 20, 5, pp. 725-730, (2010); Borotikar B.S., Newcomer R., Koppes R., McLean S.G., Combined effects of fatigue and decision making on female lower limb landing postures: central and peripheral contributions to ACL injury risk, Clinical Biomechanics, 23, 1, pp. 81-92, (2008); Brown T.N., Palmieri-Smith R.M., McLean S.G., Sex and limb differences in hip and knee kinematics and kinetics during anticipated and unanticipated jump landings: implications for anterior cruciate ligament injury, British Journal of Sports Medicine, 43, 13, pp. 1049-1056, (2009); Cowley H.R., Ford K.R., Myer G.D., Kernozek T.W., Hewett T.E., Differences in neuromuscular strategies between landing and cutting tasks in female basketball and soccer athletes, Journal of Athletic Training, 41, 1, pp. 67-73, (2006); Deitch J.R., Starkey C., Walters S.L., Moseley J.B., Injury risk in professional basketball players, American Journal of Sports Medicine, 34, 7, pp. 1077-1083, (2006); Dierks T.A., Manal K.T., Hamill J., Davis I.S., Proximal and distal influences on hip and knee kinematics in runners with patellofemoral pain during a prolonged run, Journal of Orthopaedic & Sports Physical Therapy, 38, 8, pp. 448-456, (2008); Faude O., Junge A., Kindermann W., Dvorak J., Injuries in female soccer players-a prospective study in the German national league, American Journal of Sports Medicine, 33, 11, pp. 1694-1700, (2005); Faul F., Erdfelder E., Lang A.G., Buchner A., G*Power 3: a flexible statistical power analysis program for the social, behavioral, and biomedical sciences, Behavior Research Methods, 39, 2, pp. 175-191, (2007); Ferber R., Davis I.M., Williams D.S., Gender differences in lower extremity mechanics during running, Clinical Biomechanics, 18, 4, pp. 350-357, (2003); Finestone A., Milgrom C., Evans R., Yanovich R., Constantin N., Moran D.S., Overuse injuries in female infantry recruits during low-intensity basic training, Medicine & Science in Sports & Exercise, 40, 11, (2008); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Medicine & Science in Sports & Exercise, 35, 10, pp. 1745-1750, (2003); Ford K.R., Shapiro R., Myer G.D., Van den Bogert A.J., Hewett T.E., Longitudinal sex differences during landing in knee abduction in young athletes, Medicine & Science in Sports & Exercise, 42, 10, pp. 1923-1931, (2010); Herrington L., Knee valgus angle during landing tasks in female volleyball and basketball players, The Journal of Strength & Conditioning Research, 25, 1, pp. 262-266, (2011); Herrington L., Munro A., Drop jump landing knee valgus angle; normative data in a physically active population, Physical Therapy in Sport, 11, 2, pp. 56-59, (2010); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, Journal of Bone & Joint Surgery, American Volume, 86 A, 8, pp. 1601-1608, (2004); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, American Journal of Sports Medicine, 33, 4, pp. 492-501, (2005); Hewett T.E., Torg J.S., Boden B.P., Video analysis of trunk and knee motion during non-contact anterior cruciate ligament injury in female athletes: lateral trunk and knee abduction motion are combined components of the injury mechanism, British Journal of Sports Medicine, 43, 6, pp. 417-422, (2009); Koga H., Nakamae A., Shima Y., Iwasa J., Myklebust G., Engebretsen L., Et al., Mechanisms for noncontact anterior cruciate ligament injuries knee joint kinematics in 10 injury situations from female team handball and basketball, American Journal of Sports Medicine, 38, 11, pp. 2218-2225, (2010); Krosshaug T., Nakamae A., Boden B.P., Engebretsen L., Smith G., Slauterbeck J.R., Et al., Mechanisms of anterior cruciate ligament injury in basketball: video analysis of 39 cases, American Journal of Sports Medicine, 35, 3, pp. 359-367, (2007); Le Gall F., Carling C., Reilly T., Injuries in young elite female soccer players, American Journal of Sports Medicine, 36, 2, pp. 276-284, (2008); Lee T.Q., Anzel S.H., Bennett K.A., Pang D., Kim W.C., The influence of fixed rotational deformities of the femur on the patellofemoral contact pressures in human cadaver knees, Clinical Orthopaedics and Related Research, 302, pp. 69-74, (1994); Lohmander L.S., Englund P.M., Dahl L.L., Roos E.M., The long-term consequence of anterior cruciate ligament and meniscus injuries-osteoarthritis, American Journal of Sports Medicine, 35, 10, pp. 1756-1769, (2007); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society, 13, 6, pp. 930-935, (1995); Munro A., Herrington L., Carolan M., Reliability of two-dimensional video assessment of frontal plane knee valgus during common athletic screening task, Journal of Sport Rehabilitation, 21, pp. 7-11, (2012); Myer G.D., Brent J.L., Ford K.R., Hewett T.E., Real-time assessment and neuromuscular training feedback techniques to prevent anterior cruciate ligament injury in female athletes, Strength and Conditioning Journal, 33, 3, pp. 21-35, (2011); Myer G.D., Ford K.R., Foss K.D.B., Goodman A., Ceasar A., Rauh M.J., Et al., The incidence and potential pathomechanics of patellofemoral pain in female athletes, Clinical Biomechanics, 25, 7, pp. 700-707, (2010); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Clinical correlates to laboratory measures for use in non-contact anterior cruciate ligament injury risk prediction algorithm, Clinical Biomechanics, 25, 7, pp. 693-699, (2010); Myklebust G., Maehlum S., Holm I., Bahr R., A prospective cohort study of anterior cruciate ligament injuries in elite Norwegian team handball, Scandinavian Journal of Medicine & Science in Sports, 8, 3, pp. 149-153, (1998); Olsen O., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: a systematic video analysis, American Journal of Sports Medicine, 32, 4, pp. 1002-1012, (2004); Pappas E., Hagins M., Sheikhzadeh A., Nordin M., Rose D., Biomechanical differences between unilateral and bilateral landings from a jump: gender differences, Clinical Journal of Sport Medicine, 17, 4, pp. 263-268, (2007); Pollard C.D., Sigward S.M., Powers C.M., Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments, Clinical Biomechanics, 25, 2, pp. 142-146, (2010); Powell J.W., Barber-Foss K.D., Sex-related injury patterns among selected high school sports, American Journal of Sports Medicine, 28, 3, pp. 385-391, (2000); Souza R.B., Powers C.M., Differences in hip kinematics, muscle strength, and muscle activation between subjects with and without patellofemoral pain, Journal of Orthopaedic & Sports Physical Therapy, 39, 1, pp. 12-19, (2009); Starkey C., Injuries and illnesses in the National Basketball Association: a 10-year perspective, Journal of Athletic Training, 35, 2, pp. 161-167, (2000); Stefanyshyn D.J., Stergiou P., Lun V.M.Y., Meeuwisse W.H., Worobets J.T., Knee angular impulse as a predictor of patellofemoral pain in runners, American Journal of Sports Medicine, 34, 11, pp. 1844-1851, (2006); Thomas J.R., Nelson J.K., Silverman S.J., Research methods in physical activity, (2005); Tiberio D., Compensatory internal-rotation of the femur secondary to subtalar joint pronation, Physical Therapy, 67, 5, (1987); Uhorchak J.M., Scoville C.R., Williams G.N., Arciero R.A., St Pierre P., Taylor D.C., Risk factors associated with noncontact injury of the anterior cruciate ligament-a prospective four-year evaluation of 859 West Point cadets, American Journal of Sports Medicine, 31, 6, pp. 831-842, (2003); Utting M.R., Davies G., Newman J.H., Is anterior knee pain a predisposing factor to patellofemoral osteoarthritis?, Knee, 12, 5, pp. 362-365, (2005); Willson J.D., Davis I.S., Utility of the frontal plane projection angle in females with patellofemoral pain, Journal of Orthopaedic & Sports Physical Therapy, 38, 10, pp. 606-615, (2008); Willson J.D., Ireland M.L., Davis I., Core strength and lower extremity alignment during single leg squats, Medicine & Science in Sports & Exercise, 38, 5, pp. 945-952, (2006); Zeller B.L., McCrory J.L., Kibler W.B., Uhl T.L., Differences in kinematics and electromyographic activity between men and women during the single-legged squat, American Journal of Sports Medicine, 31, 3, pp. 449-456, (2003)","A. Munro; University of Salford, Salford M6 6PU, Allerton Building, Frederick Road Campus, United Kingdom; email: A.G.Munro@edu.salford.ac.uk","","","18731600","","PTSHB","23068903","English","Phys. Ther. Sport","Article","Final","","Scopus","2-s2.0-84867570757" "Lopes J.E.; Jacobs D.M.; Travieso D.; Araújo D.","Lopes, José E. (55654988200); Jacobs, David M. (7402585803); Travieso, David (23010591300); Araújo, Duarte (9334135800)","55654988200; 7402585803; 23010591300; 9334135800","Predicting the lateral direction of deceptive and non-deceptive penalty kicks in football from the kinematics of the kicker","2014","Human Movement Science","36","","","199","216","17","42","10.1016/j.humov.2014.04.004","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84907145822&doi=10.1016%2fj.humov.2014.04.004&partnerID=40&md5=94ee10248916a141200b1539e424a92e","SpertLab, Ciper, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz Quebrada, Portugal; Departamento de Psicología Básica, Facultad de Psicología, Universidad Autónoma de Madrid, Spain","Lopes J.E., SpertLab, Ciper, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz Quebrada, Portugal; Jacobs D.M., Departamento de Psicología Básica, Facultad de Psicología, Universidad Autónoma de Madrid, Spain; Travieso D., Departamento de Psicología Básica, Facultad de Psicología, Universidad Autónoma de Madrid, Spain; Araújo D., SpertLab, Ciper, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz Quebrada, Portugal","This study addresses the utility of the kinematics of penalty takers for goalkeepers in association football. Twelve professional and semi-professional players shot to one side of the goal with (deceptive condition) or without (non-deceptive condition) simulating a shot to the opposite side. The body kinematics of the penalty takers were registered with motion-capture apparatus. Correlation and regression techniques were used to determine the relation between the shot direction and aspects of the penalty taker's kinematics at different moments. Several kinematic variables were strongly correlated with shot direction, especially those related to the lower part of the body. Some of these variables, including the angle of the non-kicking foot, acquired high correlations at time intervals that are useful to goalkeepers. Compound variables, here defined as linear combinations of variables, were found to be more useful than locally defined variables. Whereas some kinematic variables showed substantial differences in their relation to ball direction depending on deception, other kinematic variables were less affected by deception. Results are interpreted with the hypothesis of non-substitutability of genuine action. The study can also be interpreted as extending the correlation and regression methodology, often used to analyze variables defined at single moments, to the analysis of variables in a time continuous fashion. © 2014 Elsevier B.V.","2300; 2323; Anticipation; Deception; Movement; Representative design; Visual perception","Adolescent; Adult; Anticipation, Psychological; Athletic Performance; Biomechanical Phenomena; Cues; Deception; Humans; Male; Motion Perception; Motor Skills; Movement; Psychomotor Performance; Reaction Time; Reproducibility of Results; Soccer; Time Factors; Video Recording; Visual Perception; Young Adult; adult; article; correlation analysis; deception; football; human; kinematics; male; movement (physiology); predictor variable; reliability; sports and sport related phenomena; warm up; anticipation; Article; athlete; athletic performance; deception; human experiment; limb movement; methodology; motion analysis system; normal human; penalty kick; simulation; vision; adolescent; association; biomechanics; motor performance; movement perception; physiology; psychomotor performance; reaction time; reproducibility; soccer; time; videorecording; young adult","Abernethy B., Gill D.P., Parks S.L., Packer S.T., Expertise and the perception of kinematic and situational probability information, Perception, 30, pp. 233-252, (2001); Araujo D., Davids K., Hristovski R., The ecological dynamics of decision making in sport, Psychology of Sport & Exercise, 7, pp. 653-676, (2006); Button C., Dicks M., Haines R., Barker R., Davids K., Statistical modelling of gaze behaviour as categorical time series: What you should watch to save soccer penalties, Cognitive Processing, 12, pp. 235-244, (2011); Cabe P.A., Wagman J.B., Characterizing perceptual learning using regression statistics: Development of a perceptual calibration index, American Journal of Psychology, 123, pp. 253-267, (2010); Cohen J., Cohen P., West S., Aiken L., Applied multiple regression/correlation analysis for the behavioral sciences, (2003); Diaz G.J., Fajen B.R., Phillips F., Anticipation from biological motion: The goalkeeper problem, Journal of Experimental Psychology: Human Perception and Performance, 38, pp. 848-864, (2012); Dicks M., Button C., Davids K., Examination of gaze behaviours under in situ and video simulation task constraints reveals differences in information pickup for perception and action, Attention, Perception, & Psychophysics, 72, pp. 706-720, (2010); Dicks M., Button C., Davids K., Availability of advance visual information constrains association-football goalkeeping performance during penalty kicks, Perception, 39, pp. 1111-1124, (2010); Dicks M., Davids K., Button C., Individual differences in the visual control of intercepting a penalty kick in association football, Human Movement Science, 29, pp. 401-411, (2010); Dicks M., Uehara L., Lima C., Deception, individual differences and penalty kicks: Implications for goalkeeping in association football, International Journal of Sports Science & Coaching, 6, pp. 515-521, (2011); Fajen B.R., Devaney M.C., Learning to control collisions: The role of perceptual attunement and action boundaries, Journal of Experimental Psychology: Human Perception and Performance, 32, pp. 300-313, (2006); Franks I.M., Harvey T., Cues for goalkeepers: High-tech methods used to measure penalty shot response, Soccer Journal, 42, pp. 30-38, (1997); Gibson J.J., The ecological approach to visual perception, (1979); Huys R., Canal-Bruland R., Hagemann N., Beek P.J., Smeeton N.J., Williams A.M., Global information pickup underpins anticipation of tennis shot direction, Journal of Motor Behavior, 41, pp. 158-170, (2009); Huys R., Smeeton N.J., Hodges N.J., Beek P.J., Williams A.M., On the dynamic information underlying visual anticipation skill, Attention, Perception, & Psychophysics, 70, pp. 1217-1234, (2008); Jackson R.C., Warren S., Abernethy B., Anticipation skill and susceptibility to deceptive movement, Acta Psychologica, 123, pp. 355-371, (2006); Jacobs D.M., Michaels C.F., Individual differences and the use of nonspecifying variables in learning to perceive distance and size: Comments on McConnell, Muchisky, and Bingham (1998), Attention, Perception, & Psychophysics, 63, pp. 563-571, (2001); Jacobs D.M., Michaels C.F., Lateral interception I: Operative optical variables, attunement, and calibration, Journal of Experimental Psychology: Human Perception and Performance, 32, pp. 443-458, (2006); Jacobs D.M., Runeson S., Michaels C.F., Learning to visually perceive the relative mass of colliding balls in globally and locally constrained task ecologies, Journal of Experimental Psychology: Human Perception and Performance, 27, pp. 1019-1038, (2001); Jacobs D.M., Vaz D.V., Michaels C.F., The learning of visually guided action: An information-space analysis of pole balancing, Journal of Experimental Psychology: Human Perception and Performance, 38, pp. 1215-1227, (2012); Kuhn W., Penalty-kick strategies for shooters and goalkeepers, Science and football, pp. 489-492, (1988); Lees A., Owens L., Early visual cues associated with a directional place kick in soccer, Sports Biomechanics, 10, pp. 125-134, (2011); Lopes J.E., Araujo D., Peres R., Davids K., Barreiros J., The dynamics of decision making in penalty kick situations in association football, The Open Sports Sciences Journal, 1, pp. 24-30, (2008); Lopes J.E., Araujo D., Duarte R., Davids K., Fernandes O., Instructional constraints on movement and performance of players in the penalty kick, International Journal of Performance Analysis in Sport, 12, pp. 331-345, (2012); Michaels C.F., de Vries M.M., Higher order and lower order variables in the visual perception of relative pulling force, Journal of Experimental Psychology: Human Perception and Performance, 24, pp. 526-546, (1998); Piras A., Vickers J., The effect of fixation transitions on quiet eye duration and performance in the soccer penalty kick: Instep versus inside kicks, Cognitive Processing, 12, pp. 245-255, (2011); Richardson M.J., Johnston L., Person recognition from dynamic events: The kinematic specification of individual identity in walking style, Journal of Nonverbal Behavior, 29, pp. 25-44, (2005); Runeson S., Frykholm G., Visual perception of lifted weight, Journal of Experimental Psychology: Human Perception and Performance, 7, pp. 733-740, (1981); Runeson S., Frykholm G., Kinematic specification of dynamics as an informational basis for person-and-action perception: Expectation, gender recognition, and deceptive intention, Journal of Experimental Psychology: General, 112, pp. 585-615, (1983); Runeson S., Juslin P., Olsson H., Visual perception of dynamic properties: Cue heuristics versus direct-perceptual competence, Psychological Review, 107, pp. 525-555, (2000); Savelsbergh G.J.P., van der Kamp J., Williams A.M., Ward P., Anticipation and visual search behaviour in expert soccer goalkeepers, Ergonomics, 48, pp. 1686-1697, (2005); Savelsbergh G.J.P., Williams A.M., van der Kamp J., Ward P., Visual search, anticipation and expertise in soccer goalkeepers, Journal of Sports Sciences, 20, pp. 279-287, (2002); Smeeton N.J., Williams A.M., The role of movement exaggeration in the anticipation of deceptive soccer penalty kicks, British Journal of Psychology, 103, pp. 539-555, (2012); Ward P., Williams A.M., Bennett S., Perception of relative motion in tennis, Research Quarterly for Exercise and Sport, 73, pp. 107-112, (2002); Withagen R., Michaels C.F., The role of feedback information for calibration and attunement in perceiving length by dynamic touch, Journal of Experimental Psychology: Human Perception and Performance, 31, pp. 1379-1390, (2005); Withagen R., van Wermeskerken M., Individual differences in learning to perceive length by dynamic touch: Evidence for variation in perceptual learning capacities, Attention, Perception, & Psychophysics, 71, pp. 64-75, (2009)","J.E. Lopes; SpertLab, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz Quebrada, Estrada da Costa 1499-002, Cruz Quebrada - Dafundo, Portugal; email: ze9777@gmail.com","","Elsevier B.V.","01679457","","HMSCD","24846289","English","Hum. Mov. Sci.","Article","Final","","Scopus","2-s2.0-84907145822" "Reynolds B.B.; Patrie J.; Henry E.J.; Goodkin H.P.; Broshek D.K.; Wintermark M.; Druzgal T.J.","Reynolds, Bryson B. (57190023733); Patrie, James (35458182900); Henry, Erich J. (57190019887); Goodkin, Howard P. (6603023019); Broshek, Donna K. (6602887353); Wintermark, Max (7003404861); Druzgal, T. Jason (6505913931)","57190023733; 35458182900; 57190019887; 6603023019; 6602887353; 7003404861; 6505913931","Comparative analysis of head impact in contact and collision sports","2017","Journal of Neurotrauma","34","1","","38","49","11","40","10.1089/neu.2015.4308","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85008193258&doi=10.1089%2fneu.2015.4308&partnerID=40&md5=8216c362977c6ecd601d096d3959984f","Department of Radiology and Medical Imaging, Division of Neuroradiology, University of Virginia Health System, Box 800170, Charlottesville, 22908, VA, United States; Department of Public Health Sciences, University of Virginia Health System, Charlottesville, VA, United States; Departments of Neurology and Pediatrics, University of Virginia Health System, Charlottesville, VA, United States; Neurocognitive Assessment Lab, University of Virginia Health System, Charlottesville, VA, United States; Department of Neuroradiology, Stanford University, Stanford, CA, United States","Reynolds B.B., Department of Radiology and Medical Imaging, Division of Neuroradiology, University of Virginia Health System, Box 800170, Charlottesville, 22908, VA, United States; Patrie J., Department of Public Health Sciences, University of Virginia Health System, Charlottesville, VA, United States; Henry E.J., Department of Radiology and Medical Imaging, Division of Neuroradiology, University of Virginia Health System, Box 800170, Charlottesville, 22908, VA, United States; Goodkin H.P., Departments of Neurology and Pediatrics, University of Virginia Health System, Charlottesville, VA, United States; Broshek D.K., Neurocognitive Assessment Lab, University of Virginia Health System, Charlottesville, VA, United States; Wintermark M., Department of Neuroradiology, Stanford University, Stanford, CA, United States; Druzgal T.J., Department of Radiology and Medical Imaging, Division of Neuroradiology, University of Virginia Health System, Box 800170, Charlottesville, 22908, VA, United States","As concerns about head impact in American football have grown, similar concerns have started to extend to other sports thought to experience less head impact, such as soccer and lacrosse. However, the amount of head impact experienced in soccer and lacrosse is relatively unknown, particularly compared with the substantial amount of data from football. This pilot study quantifies and compares head impact from four different types of sports teams: college football, high school football, college soccer, and college lacrosse. During the 2013 and 2014 seasons, 61 players wore mastoid patch accelerometers to quantify head impact during official athletic events (i.e., practices and games). In both practices and games, college football players experienced the most or second-most impacts per athletic event, highest average peak resultant linear and rotational acceleration per impact, and highest cumulative linear and rotational acceleration per athletic event. For average peak resultant linear and rotational acceleration per individual impact, college football was followed by high school football, then college lacrosse, and then college soccer, with similar trends in both practices and games. In the four teams under study, college football players experienced a categorically higher burden of head impact. However, for cumulative impact burden, the high school football cohort was not significantly different from the college soccer cohort. The results suggest that head impact in sport substantially varies by both the type of sport (football vs. soccer vs. lacrosse) and level of play (college vs. high school). © 2016, Mary Ann Liebert, Inc. 2016.","adult brain injury; epidemiology; head trauma; pediatric brain injury; subconcussion","Accelerometry; Adolescent; Athletes; Biomechanical Phenomena; Brain Concussion; Cohort Studies; Football; Head Protective Devices; Humans; Pilot Projects; Racquet Sports; Schools; Soccer; Universities; Young Adult; acceleration; accelerometer; adult; Article; collision sport; contact sport; controlled study; football; head impact; head injury; human; lacrosse; male; soccer; sport; accelerometry; adolescent; athlete; biomechanics; brain concussion; cohort analysis; comparative study; devices; helmet; injuries; pathophysiology; physiology; pilot study; procedures; racquet sport; school; trends; university; young adult","Thurman D., Branche C., Sniezek J., The epidemiology of sports-related traumatic brain injuries in the United States: Recent developments, J. 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Neurosurg., 119, pp. 1235-1245, (2013); Baugh C., Kroshus E., Daneshvar D., Filali N., Hiscox M., Glantz L., Concussion management in United States college sports, Am. J. Sports Med., 43, pp. 47-56, (2014); Beckwith J., Greenwald R., Chu J., Crisco J., Rowson S., Duma S., Broglio S., McAllister T., Guskiewicz K., Mihalik J., Anderson S., Schnebel B., Brolinson P., Collins M., Head impact exposure sustained by football players on days of diagnosed concussion, Med. Sci. Sports Exerc., 45, pp. 737-746, (2012); Guskiewicz K., McCrea M., Marshall S., Cantu R., Randolph C., Barr W., Onate J., Kelly J., Cumulative effects associated with recurrent concussion in collegiate football players: The NCAA concussion study, J.A.M.A., 290, pp. 2549-2555, (2003); Breedlove E., Robinson M., Talavage T., Morigaki K., Yoruk U., O'Keefe K., King J., Leverenz L., Gilger J., Nauman E., Biomechanical correlates of symptomatic and asymptomatic neurophysiological impairment in high school football, J. Biomech., 45, pp. 1265-1272, (2012); Zhang M., Red S., Lin A., Patel S., Sereno A., Evidence of cognitive dysfunction after soccer playing with ball heading using a novel tablet-based approach, PLoS One, 8, (2013); Lipton M., Kim N., Zimmerman M., Kim M., Stewart W., Branch C., Lipton R., Soccer heading is associated with white matter microstructural and cognitive abnormalities, Radiology, 268, pp. 850-857, (2013); Johnson B., Sports-related subconcussive head trauma, Concussions in Athletics, pp. 331-344, (2014); Talavage T., Nauman E., Breedlove E., Yoruk U., Dye A., Morigaki K., Feuer H., Leverenz L., Functionally-detected cognitive impairment in high school football players without clinically-diagnosed concussion, J. Neurotrauma, 31, pp. 327-338, (2010); Abbas K., Shenk T., Poole V., Robinson M., Leverenz L., Nauman E., Talavage T., Effects of repetitive sub-concussive brain injury on the functional connectivity of default mode network in high school football athletes, Dev. Neuropsychol., 40, pp. 51-56, (2015); Davenport E., Whitlow C., Urban J., Espeland M., Jung Y., Rosenbaum D., Gioia G., Powers A., Stitzel J., Maldjian J., Abnormal white matter integrity related to head impact exposure in a season of high school varsity football, J. Neurotrauma, 31, pp. 1617-1624, (2014); Chun I., Mao X., Breedlove E., Leverenz L., Nauman E., Talavage T., DTI detection of longitudinal WM abnormalities due to accumulated head impacts, Dev. 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Neurol., 68, pp. 709-735, (2009); Stern R., Riley D., Daneshvar D., Nowinski C., Cantu R., McKee A., Long-term consequences of repetitive brain trauma: Chronic traumatic encephalopathy, PM R, 3, pp. S460-S467, (2011); Pellman E., Viano D., Tucker A., Casson I., Waeckerle J., Concussion in professional football: Reconstruction of game impacts and injuries, Neurosurgery, 53, pp. 799-812, (2003); Pellman E., Viano D., Tucker A., Casson I., Concussion in professional football: Location and direction of helmet impacts: Part, Neurosurgery, 53, pp. 1328-1340, (2003); Zhang L., Yang K., King A., A proposed injury threshold for mild traumatic brain injury, J. Biomech. Eng., 126, pp. 226-236, (2004); Viano D., Pellman E., Concussion in professional football: Biomechanics of the striking player: Part 8, Neurosurgery, 56, pp. 266-280, (2005); Withnall C., Shewchenko N., Gittens R., Dvorak J., Biomechanical investigation of head impacts in football, Br. J. Sports Med., 39, pp. i49-i57, (2005); Viano D., Casson I., Pellman E., Zhang L., King A., Yang K., Concussion in professional football: Brain responses by finite element analysis: Part 9, Neurosurgery, 57, pp. 891-916, (2005); Frechede B., McIntosh A., Numerical reconstruction of real-life concussive football impacts, Med. Sci. Sports Exerc., 41, pp. 390-398, (2009); Duma S., Manoogian S., Bussone W., Brolinson P., Goforth M., Donnenwerth J., Greenwald R., Chu J., Crisco J., Analysis of real-time head accelerations in collegiate football players, Clin. J. Sport Med., 15, pp. 3-8, (2005); Funk J., Duma S., Manoogian S., Rowson S., Biomechanical risk estimates for mild traumatic brain injury, Annu. Proc. Assoc. Adv. Automot. Med., 51, pp. 343-361, (2007); Schnebel B., Gwin J., Anderson S., Gatlin R., In vivo study of head impacts in football: A comparison of National Collegiate Athletic Association Division i versus high school impacts, Neurosurgery, 60, (2007); Mihalik J., Bell D., Marshall S., Guskiewicz K., Measurement of head impacts in collegiate football players: An investigation of positional and event-type differences, Neurosurgery, 61, pp. 1229-1235, (2007); McCaffrey M., Mihalik J., Crowell D., Shields E., Guskiewicz K., Measurement of head impacts in collegiate football players: Clinical measures of concussion after high-and low-magnitude impacts, Neurosurgery, 61, pp. 1236-1243, (2007); Guskiewicz K., Mihalik J., Viswanathan S., Marshall S., Croswell D., Oliaro S., Ciocca M., Hooker D., Measurement of head impacts in collegiate football players: Relationship between head impact biomechanics and acute clinical outcome after concussion, Neurosurgery, 61, pp. 1244-1253, (2007); Greenwald R., Gwin J., Chu J., Crisco J., Head impact severity measures for evaluating mild traumatic brain injury risk exposure, Neurosurgery, 62, pp. 789-798, (2008); Broglio S., Sosnoff J., Shin S., He X., Alcaraz C., Zimmerman J., Head impacts during high school football: A biomechanical assessment, J. Athl. Train., 44, pp. 342-349, (2009); Rowson S., Brolinson G., Goforth M., Dietter D., Duma S., Linear and angular head acceleration measurements in collegiate football, J. Biomech. Eng., 131, (2009); Crisco J., Fiore R., Beckwith J., Chu J., Brolinson P., Duma S., McAllister T., Duhaime A., Greenwald R., Frequency and location of head impact exposures in individual collegiate football players, J. Athl. Train., 45, pp. 549-559, (2010); Eckner J., Sabin M., Kutcher J., Broglio S., No evidence for a cumulative impact effect on concussion injury threshold, J. Neurotrauma, 28, pp. 2079-2090, (2011); Crisco J., Wilcox B., Beckwith J., Chu J., Duhaime A., Rowson S., Duma S., Maerlender A., McAllister T., Greenwald R., Head impact exposure in collegiate football players, J. Biomech., 44, pp. 2673-2678, (2011); Daniel R., Rowson S., Duma S., Head impact exposure in youth football, Ann. Biomed. Eng., 40, pp. 976-981, (2012); Beckwith J., Greenwald R., Chu J., Crisco J., Rowson S., Duma S., Broglio S., McAllister T., Guskiewicz K., Mihalik J., Anderson S., Schnebel B., Brolinson P., Collins M., Timing of concussion diagnosis is related to head impact exposure prior to injury, Med. Sci. Sports Exerc., 45, pp. 747-754, (2013); Wong R., Wong A., Bailes J., Frequency, magnitude, and distribution of head impacts in pop warner football: The cumulative burden, Clin. Neurol. Neurosurg., 118, pp. 1-4, (2014); Martini D., Eckner J., Kutcher J., Broglio S., Subconcussive head impact biomechanics: Comparing differing offensive schemes, Med. Sci. Sports Exerc., 45, pp. 755-761, (2013); Harpham J., Mihalik J., Littleton A., Frank B., Guskiewicz K., The effect of visual and sensory performance on head impact biomechanics in college football players, Ann. Biomed. Eng., 42, pp. 1-10, (2014); Urban J., Davenport E., Golman A., Maldjian J., Whitlow C., Powers A., Stitzel J., Head impact exposure in youth football: High school ages 14 to 18 years and cumulative impact analysis, Ann. Biomed. Eng., 41, pp. 2474-2487, (2013); Cobb B., Urban J., Davenport E., Rowson S., Duma S., Maldjian J., Whitlow C., Powers A., Stitzel J., Head impact exposure in youth football: Elementary school ages 9-12 years and the effect of practice structure, Ann. Biomed. Eng., 41, pp. 2463-2473, (2013); Caswell S., Lincoln A., Almquist J., Dunn R., Hinton R., Video incident analysis of head injuries in high school girls lacrosse, Am. J. Sports Med., 40, pp. 756-762, (2012); Lincoln A., Caswell S., Almquist J., Dunn R., Hinton R., Video incident analysis of concussions in boys high school lacrosse, Am. J. Sports Med., 41, pp. 756-761, (2013); Naunheim R., Standeven J., Richter C., Lewis L., Comparison of impact data in hockey, football, and soccer, J. Trauma, 48, pp. 938-941, (2000); Bauer J., Thomas T., Cauraugh J., Kaminski T., Hass C., Impact forces and neck muscle activity in heading by collegiate female soccer players, J. Sports Sci., 19, pp. 171-179, (2001); Queen R., Weinhold P., Kirkendall D., Yu B., Theoretical study of the effect of ball properties on impact force in soccer heading, Med. Sci. Sports Exerc., 35, pp. 2069-2076, (2003); Hanlon E., Bir C., Real-time head acceleration measurement in girls youth soccer, Med. Sci. Sports Exerc., 44, pp. 1102-1108, (2012); Crisco J., Costa L., Rich R., Schwartz J., Wilcox B., Surrogate headform accelerations associated with stick checks in girls lacrosse, J. Appl. Biomech., 31, pp. 122-127, (2014); McCuen E., Svaldi D., Breedlove K., Kraz N., Cummiskey B., Breedlove E., Traver J., Desmond K., Hannemann R., Zanath E., Guerra A., Leverenz L., Talavage T., Nauman E., Collegiate womens soccer players suffer greater cumulative head impacts than their high school counterparts, J. Biomech., 48, pp. 3729-3732, (2015); Broglio S., Eckner J., Martini D., Sosnoff J., Kutcher J., Randolph C., Cumulative head impact burden in high school football, J. Neurotrauma, 28, pp. 2069-2078, (2011); Wu L., Nangia V., Bui K., Hammoor B., Kurt M., Hernandez F., Kuo C., Camarillo D., In vivo evaluation of wearable head impact sensors, Ann. Biomed. Eng., 44, pp. 1234-1245, (2016); Huber P.J., The behavior of maximum likelihood estimates under nonstandard conditions, Proceedings of the Fifth Berkeley Symposium on Mathematical Statistics and Probability, pp. 221-233, (1967); White H., A heteroskedasticity-consistent covariance matrix estimator and a direct test for heteroskedasticity, Econometrica, 48, pp. 817-838, (1980); Svaldi D.O., McCuen E.C., Joshi C., Robinson M.E., Nho Y., Hannemann R., Nauman E.A., Leverenz L.J., Talavage T.M., Cerebrovascular reactivity changes in asymptomatic female athletes attributable to high school soccer participation, Brain Imaging Behav, (2016); Reynolds B., Patrie J., Henry E., Goodkin H., Broshek D., Wintermark M., Druzgal T., Practice type effects on head impact in collegiate football, J. Neurosurg., 124, pp. 501-510, (2016); Broglio S., Schnebel B., Sosnoff J., Shin S., Fend X., He X., Zimmerman J., Biomechanical properties of concussions in high school football, Med. Sci. Sports Exerc., 42, pp. 2064-2071, (2010); Broglio S., Martini D., Kasper L., Eckner J., Kutcher J., Estimation of head impact exposure in high school football, Am. J. Sports Med., 41, pp. 2877-2884, (2013); King D., Hume P., Gissane C., Brughelli M., Clark T., The influence of head impact threshold for reporting data in contact and collision sports: Systematic review and original data analysis, Sports Med., 46, pp. 51-169, (2016); Kerr Z.Y., Yeargin S.W., Valovich McLeod T.C., Mensch J., Hayden R., Dompier T.P., Comprehensive coach education reduces head impact exposure in American youth football, OJSM, 3, (2015); Swartz E.E., Broglio S.P., Cook S.B., Cantu R.C., Ferrara M.S., Guskiewicz K.M., Myers J.L., Early results of a helmetless-tackling intervention to decrease head impacts in football players, J. Athl. Train., 50, pp. 1219-1222, (2015); Lynall R.C., Clark M.D., Grand E.E., Stucker J.C., Littleton A.C., Aguilar A.J., Petschauer M.A., Teel E.F., Mihalik J.P., Head impact biomechanics in womens college soccer, Med. Sci. Sports Exerc., 48, pp. 1772-1778, (2016); Cummiskey B., Schmiffmiller D., Talavage T.M., Leverenz L., Meyer J.J., Adams D., Nauman E.A., Reliability and accuracy of helmet-mounted and head-mounted devices used to measure head accelerations, J. Sport Eng. Tech., (2016); Jadischke R., Viano D.C., Dau N., King A.I., McCarthy J., On the accuracy of the head impact telemetry (HIT) system used in football helmets, J. Biomech., 46, pp. 2310-2315, (2013)","T.J. Druzgal; Department of Radiology and Medical Imaging, Division of Neuroradiology, University of Virginia Health System, Charlottesville, Box 800170, 22908, United States; email: tjd4m@virginia.edu","","Mary Ann Liebert Inc.","08977151","","JNEUE","27541183","English","J. Neurotrauma","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85008193258" "Lucci S.; Cortes N.; Van Lunen B.; Ringleb S.; Onate J.","Lucci, Shawn (49863825100); Cortes, Nelson (23033673100); Van Lunen, Bonnie (6506227549); Ringleb, Stacie (7801640194); Onate, James (7004831141)","49863825100; 23033673100; 6506227549; 7801640194; 7004831141","Knee and hip sagittal and transverse plane changes after two fatigue protocols","2011","Journal of Science and Medicine in Sport","14","5","","453","459","6","45","10.1016/j.jsams.2011.05.001","https://www.scopus.com/inward/record.uri?eid=2-s2.0-80051867395&doi=10.1016%2fj.jsams.2011.05.001&partnerID=40&md5=212145ddbf64c22928c0df5785e65d49","Human Movement Sciences Department, Old Dominion University, Norfolk, VA, United States; Research and Testing (SMART) Laboratory, School of Recreation, Health, and Tourism, MS 4E5 Manassas, VA 20110, 10900 University Boulevard, United States; Department of Mechanical Engineering, Old Dominion University, Norfolk, VA, United States; School of Allied Medical Professions, The Ohio State University, Columbus, OH, United States","Lucci S., Human Movement Sciences Department, Old Dominion University, Norfolk, VA, United States; Cortes N., Research and Testing (SMART) Laboratory, School of Recreation, Health, and Tourism, MS 4E5 Manassas, VA 20110, 10900 University Boulevard, United States; Van Lunen B., Human Movement Sciences Department, Old Dominion University, Norfolk, VA, United States; Ringleb S., Department of Mechanical Engineering, Old Dominion University, Norfolk, VA, United States; Onate J., School of Allied Medical Professions, The Ohio State University, Columbus, OH, United States","Fatigue has been shown to alter the biomechanics of lower extremity during landing tasks. To date, no study has examined the effects of two types of fatigue on kinetics and kinematics. Objectives: This study was conducted to assess biomechanical differences between two fatigue protocols [Slow Linear Oxidative Fatigue Protocol (SLO-FP) and Functional Agility Short-Term Fatigue Protocol (FAST-FP)]. Design: Single-group repeated measures design. Methods: Fifteen female collegiate soccer players had to perform five successful trials of unanticipated sidestep cutting (SS) pre- and post-fatigue protocols. The SLO-FP consisted of an initial VO 2peak test followed by 5-min rest, and a 30-min interval run. The FAST-FP consisted of 4 sets of a functional circuit. Biomechanical measures of the hip and knee were obtained at different instants while performing SS pre- and post-fatigue. Repeated 2×2 ANOVAs were conducted to examine task and fatigue differences. Alpha level set a priori at 0.05. Results: During the FAST-FP, participants had increased knee internal rotation at initial contact (IC) (12.5±5.9°) when compared to the SLO-FP (7.9±5.4°, p<0.001). For hip flexion at IC, pre-fatigue had increased angles (36.4±8.4°) compared to post-fatigue (30.4±9.3°, p=0.003), also greater knee flexion during pre-fatigue (25.6±6.8°) than post-fatigue (22.4±8.4°, p=0.022). Conclusion: The results of this study showed that hip and knee mechanics were substantially altered during both fatigue conditions. © 2011 Sports Medicine Australi.","Biomechanics; FAST-FP; Fatigue; Lower extremity; SLO-FP","Adolescent; Athletes; Biomechanics; Exercise Test; Fatigue; Female; Hip; Humans; Knee; Oxygen Consumption; Range of Motion, Articular; Running; Soccer; Task Performance and Analysis; Young Adult; adult; analysis of variance; article; biomechanics; fatigue; female; hip; human; human experiment; joint mobility; kinematics; kinetics; knee; normal human; sports science; task performance","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: a 13-year review, Am J Sports Med, 33, 4, pp. 524-530, (2005); Griffin L.Y., Agel J., Albohm M.J., Et al., Noncontact anterior cruciate ligament injuries: risk factors and prevention strategies, J Am Acad Orthop Surg, 8, 3, pp. 141-150, (2000); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Et al., The effect of neuromuscular training on the incidence of knee injury in female athletes. A prospective study, Am J Sports Med, 27, 6, pp. 699-706, (1999); Yu B., Garrett W.E., Mechanisms of non-contact ACL injuries, Br J Sports Med, 41, SUPPL. 1, (2007); Ford K.R., Myer G.D., Toms H.E., Et al., Gender differences in the kinematics of unanticipated cutting in young athletes, Med Sci Sports Exerc, 37, 1, pp. 124-129, (2005); McLean S.G., Neal R.J., Myers P.T., Et al., Knee joint kinematics during the sidestep cutting maneuver: potential for injury in women, Med Sci Sports Exerc, 31, 7, pp. 959-968, (1999); Pollard C.D., Davis I.M., Hamill J., Influence of gender on hip and knee mechanics during a randomly cued cutting maneuver, Clin Biomech (Bristol, Avon), 19, 10, pp. 1022-1031, (2004); Chappell J.D., Herman D.C., Knight B.S., Et al., Effect of fatigue on knee kinetics and kinematics in stop-jump tasks, Am J Sports Med, 33, 7, pp. 1022-1029, (2005); Sanna G., O'Connor K.M., Fatigue-related changes in stance leg mechanics during sidestep cutting maneuvers, Clin Biomech (Bristol, Avon), 23, 7, pp. 946-954, (2008); Borotikar B.S., Newcomer R., Koppes R., Et al., Combined effects of fatigue and decision making on female lower limb landing postures: central and peripheral contributions to ACL injury risk, Clin Biomech (Bristol, Avon), 23, 1, pp. 81-92, (2008); McLean S.G., Lipfert S.W., van den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, 6, pp. 1008-1016, (2004); Rozzi S.L., Lephart S.M., Fu F.H., Effects of muscular fatigue on knee joint laxity and neuromuscular characteristics of male and female athletes, J Athl Train, 34, 2, pp. 106-114, (1999); Enoka R.M., Stuart D.G., Neurobiology of muscle fatigue, J Appl Physiol, 72, 5, pp. 1631-1648, (1992); Hakkinen K., Komi P.V., Changes in neuromuscular performance in voluntary and reflex contraction during strength training in man, Int J Sports Med, 4, 4, pp. 282-288, (1983); McLean S.G., Samorezov J.E., Fatigue-induced ACL injury risk stems from a degradation in central control, Med Sci Sports Exerc, 41, 8, pp. 1661-1672, (2009); McLean S.G., Felin R.E., Suedekum N., Et al., Impact of fatigue on gender-based high-risk landing strategies, Med Sci Sports Exerc, 39, 3, pp. 502-514, (2007); Cortes N., Blount E., Ringleb S., Et al., Soccer-specific video simulation for improving movement assessment, Sports Biomech/Int Soc Biomech Sports, 10, 1, pp. 12-24, (2011); Winter D.A., Biomechanics and motor control of human movement, pp. 75-102, (2005); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: application to the knee, J Biomech Eng, 105, 2, pp. 136-144, (1983); Begon M., Monnet T., Lacouture P., Effects of movement for estimating the hip joint centre, Gait Posture, 25, 3, pp. 353-359, (2007); Flouris A.D., Metsios G.S., Koutedakis Y., Contribution of muscular strength in cardiorespiratory fitness tests, J Sports Med Phys Fitness, 46, 2, pp. 197-201, (2006); McLean S.G., Huang X., van den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: implications for ACL injury, Clin Biomech (Bristol, Avon), 20, 8, pp. 863-870, (2005); Koutedakis Y., Sharp N.C., Lactic acid removal heart rate frequencies during recovery after strenuous rowing exercise, Br J Sports Med, 19, 4, pp. 199-202, (1985); Yu B., Lin C.F., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clin Biomech (Bristol Avon), 21, 3, pp. 297-305, (2006); Hughes G., Watkins J., A risk-factor model for anterior cruciate ligament injury, Sports Med, 36, 5, pp. 411-428, (2006); Hirokawa S., Solomonow M., Lu Y., Et al., Anterior-posterior and rotational displacement of the tibia elicited by quadriceps contraction, Am J Sports Med, 20, 3, pp. 299-306, (1992); Pandy M.G., Shelburne K.B., Dependence of cruciate-ligament loading on muscle forces and external load, J Biomech, 30, 10, pp. 1015-1024, (1997); Baca A., A comparison of methods for analyzing drop jump performance, Med Sci Sports Exerc, 31, 3, pp. 437-442, (1999); Markolf K.L., Burchfield D.M., Shapiro M.M., Et al., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, 6, pp. 930-935, (1995)","N. Cortes; Research and Testing (SMART) Laboratory, School of Recreation, Health, and Tourism, MS 4E5 Manassas, VA 20110, 10900 University Boulevard, United States; email: ncortes@gmu.edu","","","18781861","","JSMSF","21636322","English","J. Sci. Med. Sport","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-80051867395" "Mognoni P.; Narici M.V.; Sirtori M.D.; Lorenzelli F.","Mognoni, P. (7004044904); Narici, M.V. (7003787873); Sirtori, M.D. (7003715753); Lorenzelli, F. (6603665349)","7004044904; 7003787873; 7003715753; 6603665349","Isokinetic torques and kicking maximal ball velocity in young soccer players","1994","Journal of Sports Medicine and Physical Fitness","34","4","","357","361","4","60","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0028672333&partnerID=40&md5=adad504c2e2c16241e725383f78b48ef","ITBA, CNR, 20131 Milan, via Ampere 56, Italy","Mognoni P., ITBA, CNR, 20131 Milan, via Ampere 56, Italy; Narici M.V., ITBA, CNR, 20131 Milan, via Ampere 56, Italy; Sirtori M.D., ITBA, CNR, 20131 Milan, via Ampere 56, Italy; Lorenzelli F., ITBA, CNR, 20131 Milan, via Ampere 56, Italy","The purpose of this study is to assess if there is any correlation between isokinetic testing and field performance of young soccer players. The isokinetic peak torques of the knee extensor muscles in sitting position (T(KE)), and those of the hip flexor muscles in standing position (T(HF)) were measured in 24 junior soccer players. Four angular velocities (ω = 1.05, 3.14, 4.19, 5.23 rad · s-1 or 60, 180, 240, 300 deg · s-1) were used for the knee extensors and three (1.05, 3.14, 4.19 rad · s-1) for the hip flexors. On the field the subjects were asked to kick a stationary soccer ball as fast as possible against a barrier and the mean linear velocity over a 10 m path (v) was measured. T(KE) of the non dominant limb were higher than those of the opposite one at the three highest ω (p < 0.05). On the contrary the T(HF) of the dominant limbs were higher than those of the contralateral, at the two highest ω. When the ball was kicked by the dominant or non dominant limbs, the mean values and standard deviations (±SD) of v were 23.6 (±2.5) and 21.4 (±2.6) m · s-1. Torques and v were always positively correlated to each other; however, only in few cases was this relationship statistically significant. In conclusion the isokinetic torques do not seem to be good predictors of v, one of the several factors which determine the global performances of the soccer players.","Ball velocity; Hip flexors; Knee extensors","Adolescent; Biomechanics; Hip; Human; Knee; Laterality; Muscle Contraction; Muscle, Skeletal; Posture; Psychomotor Performance; Rotation; Soccer; adolescent; adult; article; athlete; biomechanics; controlled study; flexor muscle; hip; human; human experiment; knee; male; muscle force; normal human; torque; velocity","","","","","00224707","","JMPFA","7643580","English","J. SPORTS MED. PHYS. FITNESS","Article","Final","","Scopus","2-s2.0-0028672333" "Brent J.L.; Myer G.D.; Ford K.R.; Paterno M.V.; Hewett T.E.","Brent, Jensen L. (14017733900); Myer, Gregory D. (6701852696); Ford, Kevin R. (7102539333); Paterno, Mark V. (6602774922); Hewett, Timothy E. (7005201943)","14017733900; 6701852696; 7102539333; 6602774922; 7005201943","The effect of sex and age on isokinetic hip-abduction torques","2013","Journal of Sport Rehabilitation","22","1","","41","46","5","46","10.1123/jsr.22.1.41","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84875007974&doi=10.1123%2fjsr.22.1.41&partnerID=40&md5=8f5d5a260a23bc45d0d52ee3f22512fa","Academy of Sports Performance, Cincinnati, OH, United States; Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Dept of Physical Therapy, High Point University, High Point, NC, United States","Brent J.L., Academy of Sports Performance, Cincinnati, OH, United States; Myer G.D., Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Ford K.R., Dept of Physical Therapy, High Point University, High Point, NC, United States; Paterno M.V., Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Hewett T.E., Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States","Context: As high school female athletes demonstrate a rate of noncontact anterior cruciate ligament (ACL) injury 3-6 times higher than their male counterparts, research suggests that sagittal-plane hip strength plays a role in factors associated with ACL injuries. Objective: To determine if gender or age affect hip-abductor strength in a functional standing position in young female and male athletes. Design: Prospective cohort design. Setting: Biomechanical laboratory. Participants: Over a 3-y time period, 852 isokinetic hip-abduction evaluations were conducted on 351 (272 female, 79 male) adolescent soccer and basketball players. Intervention: Before testing, athletes were secured in a standing position, facing the dynamometer head, with a strap secured from the uninvolved side and extending around the waist just above the iliac crest. The dynamometer head was positioned in line with the body in the coronal plane by aligning the axis of rotation of the dynamometer with the center of hip rotation. Subjects performed 5 maximum-effort repetitions at a speed of 120°/s. The peak torque was recorded and normalized to body mass. All test trials were conducted by a single tester to limit potential interrater test error. Main Outcome Measure: Standing isokinetic hip-abduction torque. Results: Hip-abduction torque increased in both males and females with age (P <.001) on both the dominant and nondominant sides. A significant interaction of gender and age was observed (P <.001), which indicated that males experienced greater increases in peak torque relative to body weight than did females as they matured. Conclusions: Males exhibit a significant increase in normative hip-abduction strength, while females do not. Future study may determine if the absence of similar increased relative hip-abduction strength in adolescent females, as they age, may be related to their increased risk of ACL injury compared with males. © 2013 Human Kinetics, Inc.","ACL injury; Biomechanics; Hip strength; Knee valgus","","Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes: a prospective study, Am J Sports Med, 27, 6, pp. 699-706, (1999); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Med Sci Sports Exerc, 37, 1, pp. 124-129, (2005); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, 10, pp. 1745-1750, (2003); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes: decreased impact forces and increased hamstring torques, Am J Sports Med, 24, 6, pp. 765-773, (1996); Kernozek T.W., Torry M.R., Van Hoof H., Cowley H., Tanner S., Gender differences in frontal and sagittal plane biomechanics during drop landings, Med Sci Sports Exerc, 37, 6, pp. 1003-1012, (2005); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Brindle T.J., Mattacola C., McCrory J., Electromyographic changes in the gluteus medius during stair ascent and descent in subjects with anterior knee pain, Knee Surg Sports Traumatol Arthrosc, 11, 4, pp. 244-251, (2003); Nyland J., Kuzemchek S., Parks M., Caborn D.N., Femoral anteversion influences vastus medialis and gluteus medius EMG amplitude: composite hip abductor EMG amplitude ratios during isometric combined hip abduction-external rotation, J Electromyogr Kinesiol, 14, 2, pp. 255-261, (2004); Powers C.M., The influence of altered lower-extremity kinematics on patellofemoral joint dysfunction: a theoretical perspective, J Orthop Sports Phys Ther, 33, 11, pp. 639-646, (2003); Neumann D.A., Kinesiology of the hip: a focus on muscular actions, J Orthop Sports Phys Ther, 40, 2, pp. 82-94, (2010); Padua D.A., Marshall S.W., Beutler A.I., Et al., Predictors of knee valgus angle during a jump-landing task, Med Sci Sports Exerc, 37, 5, (2005); Click Fenter P., Bellew J.W., Pitts T.A., Kay R.E., Reliability of stabilised commercial dynamometers for measuring hip abduction strength: a pilot study, Br J Sports Med, 37, 4, pp. 331-334, (2003); Ireland M.L., Willson J.D., Ballantyne B.T., Davis I.M., Hip strength in females with and without patellofemoral pain, J Orthop Sports Phys Ther, 33, 11, pp. 671-676, (2003); Kea J., Kramer J., Forwell L., Birmingham T., Hip abduction-adduction strength and one-leg hop tests: test-retest reliability and relationship to function in elite ice hockey players, J Orthop Sports Phys Ther, 31, 8, pp. 446-455, (2001); Tyler T.F., Nicholas S.J., Hershman E.B., Glace B.W., Mullaney M.J., McHugh M.P., The effect of creatine supplementation on strength recovery after anterior cruciate ligament (ACL) reconstruction: a randomized, placebo-controlled, double-blind trial, Am J Sports Med, 32, 2, pp. 383-388, (2004); Bertocci G.E., Munin M.C., Frost K.L., Burdett R., Wassinger C.A., Fitzgerald S.G., Isokinetic performance after total hip replacement, Am J Phys Med Rehabil, 83, 1, pp. 1-9, (2004); Cahalan T.D., Johnson M.E., Liu S., Chao E.Y., Quantitative measurements of hip strength in different age groups, Clin Orthop Relat Res, 246, pp. 136-145, (1989); Knapik J.J., Wright J.E., Mawdsley R.H., Braun J.M., Isokinetic, isometric and isotonic strength relationships, Arch Phys Med Rehabil, 64, 2, pp. 77-80, (1983); Leetun D.T., Ireland M.L., Willson J.D., Ballantyne B.T., Davis I.M., Core stability measures as risk factors for lower extremity injury in athletes, Med Sci Sports Exerc, 36, 6, pp. 926-934, (2004); Johnson M.E., Mille M.L., Martinez K.M., Crombie G., Rogers M.W., Age-related changes in hip abductor and adductor joint torques, Arch Phys Med Rehabil, 85, 4, pp. 593-597, (2004); Masuda K., Kikuhara N., Takahashi H., Yamanaka K., The relationship between muscle cross-sectional area and strength in various isokinetic movements among soccer players, J Sports Sci, 21, 10, pp. 851-858, (2003); O'Connor D., Groin injuries in professional rugby league players: a prospective study, J Sports Sci, 22, 7, pp. 629-636, (2004); Ahmad C.S., Clark A.M., Heilmann N., Schoeb J.S., Gardner T.R., Levine W.N., Effect of gender and maturity on quadriceps-to-hamstring strength ratio and anterior cruciate ligament laxity, Am J Sports Med, 34, 3, pp. 370-374, (2006); Beunen G., Malina R.M., Growth and physical performance relative to the timing of the adolescent spurt, Exerc Sport Sci Rev, 16, pp. 503-540, (1988); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J Bone Joint Surg Am, 8, pp. 1601-1608, (2004); Myer G.D., Ford K.R., Barber Foss K.D., Liu C., Nick T.G., Hewett T.E., The relationship of hamstrings and quadriceps strength to anterior cruciate ligament injury in female athletes, Clin J Sport Med, 19, 1, pp. 3-8, (2009); McLean S.G., Huang X., Su A., Van Den Bogert A.J., Neuromuscular control contributions to non-contact ACL injury, Transactions of the Orthopaedic Research Society, Washington DC, (2005); Brent J.L., Myer G.D., Ford K.R., Hewett T.E., A longitudinal examination of hip abduction strength in adolescent males and females, Med Sci Sports Exerc, 39, 5, (2008); Myer G.D., Brent J.L., Ford K.R., Hewett T.E., A pilot study to determine the effect of trunk and hip focused neuromuscular training on hip and knee isokinetic strength, Br J Sports Med, 42, 7, pp. 614-619, (2008); Hedeker D., An introduction to growth modeling, Quantitative Methodology for the Social Sciences, 2004, pp. 32-49; Hewett T.E., Paterno M.V., Myer G.D., Strategies for enhancing proprioception and neuromuscular control of the knee, Clin Orthop Relat Res, 402, pp. 76-94, (2002); Sell T., Ferris C.M., Abt J.P., Et al., Predictors of anterior tibia shear force during a vertical stop-jump, J Orthop Sports Phys Ther, 34, pp. 1589-1597, (2004); White K.K., Lee S.S., Cutuk A., Hargens A.R., Pedowitz R.A., EMG power spectra of intercollegiate athletes and anterior cruciate ligament injury risk in females, Med Sci Sports Exerc, 35, 3, pp. 371-376, (2003); Hewett T.E., Neuromuscular and hormonal factors associated with knee injuries in female athletes: strategies for intervention, Sports Med, 29, 5, pp. 313-327, (2000); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: a systematic video analysis, Am J Sports Med, 32, 4, pp. 1002-1012, (2004); Myer G.D., Ford K.R., Paterno M.V., Nick T.G., Hewett T.E., The effects of generalized joint laxity on risk of anterior cruciate ligament injury in young female athletes, Am J Sports Med, 36, 6, pp. 1073-1080, (2008)","","","Human Kinetics Publishers Inc.","10566716","","JSRHE","","English","J. Sport Rehabil.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84875007974" "Shinkai H.; Nunome H.; Isokawa M.; Ikegami Y.","Shinkai, Hironari (55798761200); Nunome, Hiroyuki (6507093692); Isokawa, Masanori (7003548240); Ikegami, Yasuo (7103189958)","55798761200; 6507093692; 7003548240; 7103189958","Ball impact dynamics of instep soccer kicking","2009","Medicine and Science in Sports and Exercise","41","4","","889","897","8","54","10.1249/MSS.0b013e31818e8044","https://www.scopus.com/inward/record.uri?eid=2-s2.0-67650085824&doi=10.1249%2fMSS.0b013e31818e8044&partnerID=40&md5=73dd8fa7ea230361b7a950300515d4c4","Graduate School of Education and Human Development, Nagoya University, Nagoya, Japan; Research Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Japan; Department of Health Promotion Sciences, Tokyo Metropolitan University, Tokyo, Japan; Research Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya 464-8601, Furo-cho, Chikusa-ku, Japan","Shinkai H., Graduate School of Education and Human Development, Nagoya University, Nagoya, Japan, Research Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya 464-8601, Furo-cho, Chikusa-ku, Japan; Nunome H., Research Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Japan; Isokawa M., Department of Health Promotion Sciences, Tokyo Metropolitan University, Tokyo, Japan; Ikegami Y., Research Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Japan","Purpose: The purpose of this study was to reveal the foot-ball interaction during ball impact phase of soccer instep kicking. Methods: Eleven soccer players performed maximal instep kicks. The behavior of kicking foot and ball during ball impact was captured using two ultrahigh-speed cameras at 5000 Hz. Foot motion was described three dimensionally, and the motion of the center of gravity of the ball (CGB) was estimated by the spherical shell model in which the ball deformation was taken into account. The peak ball reaction force acting on the foot was estimated from Newton's equation of motion in which the peak CGB acceleration in sagittal plane was calculated from its velocity slope near the peak ball deformation. Results: During ball impact (9.0 ± 0.4 ms), the foot was passively abducted and everted. Moreover, an unknown feature-slight dorsal flexion before distinctive plantarflexion-was quantified in most trials. The CGB velocity exceeded that of the foot when the ball was maximally deformed (6.2 ± 0.6 cm). The magnitude of peak ball reaction force reached 2926 ± 509 N, which corresponds to approximately twice as that of the mean force (1403 ± 129 N). From the changes of the foot velocity, the CGB velocity, and the ball deformation, the ball impact phase can be divided into four phases. Conclusions: The ultrahigh-speed video and methodology in this study documented complex three-dimensional foot motions to impact in soccer instep kicks, dynamic foot-ball interaction, and larger peak ball reaction force on the foot that previously estimated. It can be considered that effectual duration to accelerate the ball is roughly three fourths of visually determined ball contact time. © 2009 The American College of Sports Medicine.","Deformation; Foot; High-speed video; Kinematics; Reaction force; Velocity","Acceleration; Adolescent; Biomechanics; Foot; Humans; Japan; Male; Psychomotor Performance; Soccer; Sports Equipment; Young Adult; abduction; acceleration; adult; article; biomechanics; camera; dynamics; foot; foot dorsal flexion; foot plantarflexion; football; force; gravity; human; human experiment; image analysis; joint function; kicking; kinematics; leg movement; male; motion; motion analysis system; normal human; physical activity; range of motion; sports medicine; three dimensional imaging; time; velocity","Abdel-Aziz Y.I., Karara H.M., Direct linear transformation from comparator coordinates into object space coordinates in close- range photogrammetry, Proceedings of the ASP/UI Symposium on Close-Range Photogrammetry, pp. 1-18, (1971); Andersen T.B., Dorge H.C., Thomsen F.I., Collisions in soccer kicking, Sports Engin, 2, pp. 121-125, (1999); Asai T., Akatsuka T., Kaga M., Impact process of kicking in football, Proceefings ofthe XVth Congress ofthe International Society of Biomechanics, pp. 74-75, (1995); Asai T., Carre M.J., Akatsuka T., Haake S.J., The curve kick of a football: I. Impact with the foot, Sports Engin, 5, pp. 183-192, (2002); Asai T., Nunome H., Maeda A., Matsubara S., Lake M., Computer simulation of ball kicking using the finite element skeletal foot model, Science and Football V, pp. 77-82, (2005); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Knudson D., Bahamonde R., Effect of endpoint conditions on positionandvelocitynearimpactintennis, J Sports Sci, 19, 11, pp. 839-844, (2001); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, J Sports Sci, 24, 1, pp. 11-22, (2006); Smith G., Padding point extrapolation techniques for the Butter- worth digital-filter, J Biomech, 22, 8-9, pp. 967-971, (1989); Tol J.L., Slim E., van Soest A.J., van Dijk C.N., The relationship ofthe kicking action in soccer and anterior ankle impingement syndrome: A biomechanical analysis, Am J Sports Med, 30, 1, pp. 45-50, (2002); Tsaousidis N., Zatsiorsky V., Two types of ball-effector interaction and their relative contribution to soccer kicking, Hum Mov Sci, 15, 6, pp. 861-876, (1996); Winter D.A., Biomechanics and Motor Control of Human Movement, pp. 43-53, (2004)","H. Shinkai; Research Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya 464-8601, Furo-cho, Chikusa-ku, Japan; email: shinkai@nagoya-u.jp","","","15300315","","MSCSB","19276844","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-67650085824" "Pollard C.D.; Stearns K.M.; Hayes A.T.; Heiderscheit B.C.","Pollard, Christine D. (7006671942); Stearns, Kristen M. (55503502800); Hayes, Andy T. (57188926820); Heiderscheit, Bryan C. (6603343381)","7006671942; 55503502800; 57188926820; 6603343381","Altered lower extremity movement variability in female soccer players during side-step cutting after anterior cruciate ligament reconstruction","2015","American Journal of Sports Medicine","43","2","","460","465","5","62","10.1177/0363546514560153","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84964211305&doi=10.1177%2f0363546514560153&partnerID=40&md5=c0aa9ea8066a5606379af61529ff394f","Program in Exercise and Sport Science, Oregon State University-Cascades, Cascades Hall, Bend, 97701, OR, United States; Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, PA, United States; Department of Orthopedics and Rehabilitation, University of Wisconsin, School of Medicine and Public Health, Madison, WI, United States","Pollard C.D., Program in Exercise and Sport Science, Oregon State University-Cascades, Cascades Hall, Bend, 97701, OR, United States; Stearns K.M., Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, PA, United States; Hayes A.T., Program in Exercise and Sport Science, Oregon State University-Cascades, Cascades Hall, Bend, 97701, OR, United States; Heiderscheit B.C., Department of Orthopedics and Rehabilitation, University of Wisconsin, School of Medicine and Public Health, Madison, WI, United States","Background: Anterior cruciate ligament (ACL) reconstruction (ACLR) is common after an ACL tear and is thought to restore functional stability to the knee. A recent investigation demonstrated that individuals who have undergone ACLR exhibited increased lower extremity coupling variability during gait, suggestive of altered dynamic stability. However, little is known about whether they exhibit alterations in lower extremity variability during dynamic sport-specific tasks. Purpose: To determine if female soccer players who have had an ACLR demonstrate differences in lower extremity coupling variability as compared with athletes with no history of knee injury during a side-step cutting maneuver. Study Design: Controlled laboratory study. Methods: Ten female soccer players who had undergone ACLR served as the experimental group, and 10 female soccer players with no history of knee ligament injury composed the control group (CON). Three-dimensional kinematics and ground-reaction forces were collected while each participant performed a side-step cutting maneuver. Based on known ACL loading patterns, 7 lower extremity intralimb couplings were created. With use of a vector-coding technique, the coordination variability was calculated for each coupling. Independent t tests were used to determine group differences in variability for each coupling (P ° .05). Results: Individuals who had undergone ACLR exhibited increased lower extremity variability during side-step cutting as compared with control subjects in the following couplings: hip rotation/knee abduction-adduction (27.2° ± 11.5° [ACLR] vs 19.7° ± 6.8° [CON]; P = .04), hip flexion-extension/knee abduction-adduction (26.0° ± 13.3° [ACLR] vs 18.6° ± 5.3° [CON]; P = .05), knee abduction-adduction/knee flexion-extension (13.5° ± 5.7° [ACLR] vs 7.3° ± 2.7° [CON]; P<.01), and knee abduction-adduction/ knee rotation (26.4° ± 10.8° [ACLR] vs 19.3° ± 4.5° [CON]; P = .03). In addition, there was a trend toward increased variability in the hip rotation/ankle inversion-eversion coupling (22.9° ± 9.3° [ACLR] vs 18.0° ± 6.7° [CON]; P = .09) and knee abductionadduction/ ankle inversion-eversion coupling (25.9° ± 10.0° [ACLR] vs 20.2° ± 9.7° [CON]; P = .10). Conclusion: Female soccer players who have undergone ACLR and returned to sports participation exhibit altered lower extremity coupling variability during side-step cutting. Clinical Relevance: While individuals who have had an ACLR exhibit mechanical knee stability before returning to sports, the observed increased movement variability during side-step cutting is likely reflective of altered neuromuscular control and may contribute to the known increased risk for ACL reinjury and knee osteoarthritis after return to sports participation. Improving the understanding of altered lower extremity coupling variability after ACLR will aid in the development of more effective rehabilitation programs. © 2014 The Author(s).","ACL reconstruction; side-step cutting; variability","Adult; Anterior Cruciate Ligament; Anterior Cruciate Ligament Reconstruction; Biomechanical Phenomena; Case-Control Studies; Female; Gait; Humans; injuries; injuries; Knee Joint; Lower Extremity; Movement; physiology; physiology; physiology; physiopathology; physiopathology; Rotation; Soccer; surgery; surgery; Young Adult; adult; anterior cruciate ligament; anterior cruciate ligament reconstruction; biomechanics; case control study; female; gait; human; injuries; knee; leg; movement (physiology); pathophysiology; physiology; rotation; soccer; surgery; young adult","Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Cunningham T.J., Mullineaux D.R., Noehren B., Shapiro R., Uhl T.L., Coupling angle variability in healthy and patellofemoral pain runners, Clin Biomech, 29, 3, pp. 317-322, (2014); Davids K., Glazier P., Araujo D., Bartlett R., Movement systems as dynamical systems: The functional role of variability and its implications for sports medicine, Sports Med, 33, 4, pp. 245-260, (2003); Delahunt E., Prendiville A., Sweeney L., Hip and knee joint kinematics during a diagonal jump landing in anterior cruciate ligament reconstructed females, J Electromyogr Kinesiol, 22, 4, pp. 598-606, (2012); Ferber R., Davis I.M., Williams D.S., Effect of foot orthotics on rearfoot and tiia joint coupling patterns and variability, J Biomech, 38, 3, pp. 477-483, (2005); Fetters L., Perspective on variability in the development of human action, Phys Ther, 90, 12, pp. 1860-1867, (2010); Gokeler A., Benjaminse A., Hewett T.E., Proprioceptive deficits after ACL injury: Are they clinically relevant?, Br J Sports Med, 46, 3, pp. 180-192, (2012); Gokeler A., Hof A.L., Arnold M.P., Dijkstra P.U., Postema K., Otten E., Abnormal landing strategies after ACL reconstruction, Scand J Med Sci Sports, 20, 1, pp. 12-e19, (2010); Hadders-Algra M., Variation and variability: Key words in human motor development, Phys Ther, 90, 12, pp. 1823-1837, (2010); Hamill J., Van Emmerik R.E., Heiderscheit B.C., Li L., A dynamical systems approach to lower extremity running injuries, Clin Biomech, 14, 5, pp. 297-308, (1999); Heiderscheit B.C., Movement variability as a clinical measure for locomotion, J Appl Biomech, 16, pp. 419-427, (2000); Heiderscheit B.C., Hamill J., Van Emmerik R.E.A., Variability of stride characteristics and joint coordination among individuals with unilateral patellofemoral pain, J Appl Biomech, 18, pp. 110-121, (2002); Kiefer A.W., Ford K.R., Paterno M.V., Inter-segmental postural coordination measures differentiate athletes with ACL reconstruction from uninjured athletes, Gait Posture, 37, 2, pp. 149-153, (2013); Levine J.W., Kiapour A.M., Quatman C.E., Clinically relevant injury patterns after anterior cruciate ligament injury provide insight into injury mechanisms, Am J Sports Med, 41, 2, pp. 385-395, (2013); Lohmander L.S., Ostenberg A., Englund M., Roos H., High prevalence of knee osteoarthritis, pain, and functional limitations in female soccer players twelve years after anterior cruciate ligament injury, Arthritis Rheum, 50, 10, pp. 3145-3152, (2004); Manal K., McClay I., Stanhope S., Comparison of surface mounted markers and attachment methods in estimating tibial rotations during walking: An in vivo study, Gait Posture, 11, 1, pp. 38-45, (2000); Moraiti C., Stergiou N., Ristanis S., Georgoulis A.D., ACL deficiency affects stride-to-stride variability as measured using nonlinear methodology, Knee Surg Sports Traumatol Arthrosc, 15, 12, pp. 1406-1413, (2007); Moraiti C.O., Stergiou N., Vasiliadis H.S., Anterior cruciate ligament reconstruction results in alternation in gait variability, Gait Posture, 32, 2, pp. 169-175, (2010); Paterno M.V., Rauh M.J., Schmitt L.C., Ford K.R., Hewett T.C., Incidence of contralateral and ipsilateral anterior cruciate ligament (ACL) injury after primary ACL reconstruction and return to sport, Clin J Sport Med, 22, 2, pp. 116-121, (2012); Paterno M.V., Schmitt L.C., Ford K.R., Biomechanical measures during landing and postural stability predict second anterior cruciate ligament injury after anterior cruciate ligament reconstruction and return to sport, Am J Sports Med, 38, 10, pp. 1968-1978, (2010); Pollard C.D., Heiderscheit B.C., Van Emmerik R.E., Hamill J., Gender differences in lower extremity coupling variability during an unanticipated cutting maneuver, J Appl Biomech, 21, 2, pp. 143-152, (2005); Pollard C.D., Sigward S.M., Powers C.M., Gender differences in hip joint kinematics and kinetics during a side-step cutting maneuver, Clin J Sport Med, 17, 1, pp. 38-42, (2007); Pollard C.D., Sigward S.M., Powers C.M., Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments, Clin Biomech, 25, 2, pp. 142-146, (2010); Powers C.M., The influence of abnormal hip mechanics on knee injury: A biomechanical perspective, J Orthop Sports Phys Ther, 40, 2, pp. 42-51, (2010); Shimokochi Y., Shultz S.J., Mechanisms of noncontact anterior cruciate ligament injury, J Athl Train, 43, 4, pp. 396-408, (2008); Sparrow W.A., Donovan E., Van Emmerik R.E.A., Barry E.B., Using relative motion plots to measure changes in intra-limb and inter-limb coordination, J Mot Behav, 19, 1, pp. 115-129, (1987); Stearns K.M., Pollard C.D., Abnormal frontal plane knee mechanics during sidestep cutting in female soccer athletes after anterior cruciate ligament reconstruction and return to sport, Am J Sports Med, 41, 4, pp. 918-923, (2013); Vairo G.L., Myers J.B., Sell T.C., Fu F.H., Harner C.D., Lephart S.M., Neuromuscular and biomechanical landing performance subsequent to ipsilateral semitendinosus and gracilis autograft anterior cruciate ligament reconstruction, Knee Surg Sports Traumatol Arthrosc, 16, 1, pp. 2-14, (2008); Webster K.E., Feller J.A., Wittwer J.E., Longitudinal changes in knee joint biomechanics during level walking following anterior cruciate ligament reconstruction surgery, Gait Posture, 36, 2, pp. 167-171, (2012); Xergia S.A., Pappas E., Zampeli F., Georgiou S., Georgoulis A.D., Asymmetries in functional hop tests, lower extremity kinematics, and isokinetic strength persist 6 to 9 months following anterior cruciate ligament reconstruction, J Orthop Sports Phys Ther, 43, 3, pp. 154-162, (2013); Zampeli F., Moraiti C.O., Xergia S., Tsiaras V.A., Stergiou N., Georgoulis A.D., Stride-to-stride variability is altered during backward walking in anterior cruciate ligament deficient patients, Clin Biomech, 25, 10, pp. 1037-1041, (2010)","C.D. Pollard; Program in Exercise and Sport Science, Oregon State University-Cascades, Cascades Hall, Bend, 97701, United States; email: christine.pollard@osucascades.edu","","SAGE Publications Inc.","03635465","","AJSMD","25512664","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-84964211305" "Elattar O.; Choi H.-R.; Dills V.D.; Busconi B.","Elattar, Osama (57190013230); Choi, Ho-Rim (57190018853); Dills, Vickie D. (57190014541); Busconi, Brian (35619553800)","57190013230; 57190018853; 57190014541; 35619553800","Groin Injuries (Athletic Pubalgia) and Return to Play","2016","Sports Health","8","4","","313","323","10","64","10.1177/1941738116653711","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84976465134&doi=10.1177%2f1941738116653711&partnerID=40&md5=40024a9fa90da6ccbd9f9b03bede38b0","Orthopaedic Sports Medicine, University of Massachusetts, Worcester, MA, United States; Clinical Services, Physical Therapy Innovations, Auburn, MA, United States","Elattar O., Orthopaedic Sports Medicine, University of Massachusetts, Worcester, MA, United States; Choi H.-R., Orthopaedic Sports Medicine, University of Massachusetts, Worcester, MA, United States; Dills V.D., Clinical Services, Physical Therapy Innovations, Auburn, MA, United States; Busconi B., Orthopaedic Sports Medicine, University of Massachusetts, Worcester, MA, United States","Context: Groin pain is a common entity in athletes involved in sports that require acute cutting, pivoting, or kicking such as soccer and ice hockey. Athletic pubalgia is increasingly recognized as a common cause of chronic groin and adductor pain in athletes. It is considered an overuse injury predisposing to disruption of the rectus tendon insertion to the pubis and weakness of the posterior inguinal wall without a clinically detectable hernia. These patients often require surgical therapy after failure of nonoperative measures. A variety of surgical options have been used, and most patients improve and return to high-level competition. Evidence Acquisition: PubMed databases were searched to identify relevant scientific and review articles from January 1920 to January 2015 using the search terms groin pain, sports hernia, athletic pubalgia, adductor strain, osteitis pubis, stress fractures, femoroacetabular impingement, and labral tears. Study Design: Clinical review. Level of Evidence: Level 4. Results and Conclusion: Athletic pubalgia is an overuse injury involving a weakness in the rectus abdominis insertion or posterior inguinal wall of the lower abdomen caused by acute or repetitive injury of the structure. 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When nonoperative measures fail, Am J Sports Med, 28, pp. 350-355, (2000); Zoga A.C., Kavanagh E.C., Omar I.M., Et al., Athletic pubalgia and the “sports hernia”: MR imaging findings, Radiology, 247, pp. 797-807, (2008)","B. Busconi; Department of Orthopaedic Surgery, University of Massachusetts, Worcester, 281 Lincoln Street, 01605, United States; email: brian.busconi@umassmemorial.org","","SAGE Publications Inc.","19417381","","","27302153","English","Sports Health","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84976465134" "Myer G.D.; Ford K.R.; Khoury J.; Hewett T.E.","Myer, Gregory D. (6701852696); Ford, Kevin R. (7102539333); Khoury, Jane (35427121300); Hewett, Timothy E. (7005201943)","6701852696; 7102539333; 35427121300; 7005201943","Three-dimensional motion analysis validation of a clinic-based nomogram designed to identify high ACL injury risk in female athletes","2011","Physician and Sportsmedicine","39","1","","19","28","9","40","10.3810/psm.2011.02.1858","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952240847&doi=10.3810%2fpsm.2011.02.1858&partnerID=40&md5=c31e853cb3902bb0e79ce643cf36b3db","Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States; Rocky Mountain University of Health Professions, Provo, UT, United States; Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, OH, United States; Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Departments of Orthopaedic Surgery, Biomedical Engineering, and Rehabilitation Sciences, University of Cincinnati, Cincinnati, OH, United States; Ohio State University Sports Medicine Center, Depts. of Physiology, Cell Biology, Family Medicine, Orthopaedic Surgery, and Biomedical Engineering, Ohio State University, Columbus, OH, United States","Myer G.D., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Rocky Mountain University of Health Professions, Provo, UT, United States, Ohio State University Sports Medicine Center, Depts. of Physiology, Cell Biology, Family Medicine, Orthopaedic Surgery, and Biomedical Engineering, Ohio State University, Columbus, OH, United States; Ford K.R., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, OH, United States; Khoury J., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Hewett T.E., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, OH, United States, Departments of Orthopaedic Surgery, Biomedical Engineering, and Rehabilitation Sciences, University of Cincinnati, Cincinnati, OH, United States, Ohio State University Sports Medicine Center, Depts. of Physiology, Cell Biology, Family Medicine, Orthopaedic Surgery, and Biomedical Engineering, Ohio State University, Columbus, OH, United States","Aims: Prospective measures of high knee abduction moment (KAM) during landing identify female athletes at increased risk for anterior cruciate ligament (ACL) injury. Laboratory-driven measurements predict high KAM with 90% accuracy. This study aimed to validate the clinic-based variables against 3-dimensional motion analysis measurements. Methods: Twenty female basketball, soccer, and volleyball players (age, 15.9 ± 1.3 years; height, 163.6 ± 9.9 cm; body mass, 57.0 ± 12.1 kg) were tested using 3-dimensional motion analysis and clinic-based techniques simultaneously. Multiple logistic regression models have been developed to predict high KAM (a surrogate for ACL injury risk) using both measurement techniques. Clinic-based measurements were validated against 3-dimensional motion analysis measures, which were recorded simultaneously, using within- and between-method reliability as well as sensitivity and specificity comparisons. Results: The within-variable analysis showed excellent inter-rater reliability for all variables using both 3-dimensional motion analysis and clinic-based methods, with intraclass correlation coefficients (ICCs) that ranged from moderate to high (0.60-0.97). In addition, moderate-to-high agreement was observed between 3-dimensional motion analysis and clinic-based measures, with ICCs ranging from 0.66 to 0.99. Bland-Altman plots confirmed that each variable provided no systematic shift between 3-dimensional motion analysis and clinic-based methods, and there was no association between difference and average. A developed regression equation also supported model validity with > 75% prediction accuracy of high KAM using both the 3-dimensional motion analysis and clinic-based techniques. Conclusion: The current validation provides the critical next step to merge the gap between laboratory identification of injury risk factors and clinical practice. Implementation of the developed prediction tool to identify female athletes with high KAM may facilitate the entry of female athletes with high ACL injury risk into appropriate injury-prevention programs. © The Physician and Sportsmedicine.","Anterior cruciate ligament injury; Drop-vertical jump landing; High-risk biomechanics; Injury prevention; Knee; Young athletes","accuracy; adolescent; anterior cruciate ligament injury; article; athlete; basketball; biomechanics; body mass; controlled study; diagnostic test accuracy study; female; high risk population; human; knee abduction moment; measurement; motion analysis system; movement (physiology); nomogram; predictive value; reliability; sensitivity and specificity; sport; validation process; volleyball","Hewett T.E., Myer G.D., Ford K.R., Heidt Jr. R.S., Colosimo A.J., McLean S.G., Van D.B.A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, American Journal of Sports Medicine, 33, 4, pp. 492-501, (2005); Padua D.A., Marshall S.W., Beutler A.I., Garrett W.E., Prospective cohort study of biomechanical risk factors of ACL injury: The JUMP-ACL Study, Book Prospective Cohort Study of Biomechanical Risk Factors of ACL Injury: The JUMP-ACL Study, pp. 393-395, (2009); Olsen O.-E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, American Journal of Sports Medicine, 32, 4, pp. 1002-1012, (2004); Krosshaug T., Nakamae A., Boden B.P., Engebretsen L., Smith G., Slauterbeck J.R., Hewett T.E., Bahr R., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, American Journal of Sports Medicine, 35, 3, pp. 359-367, (2007); Boden B.P., Dean C.S., Feagin Jr. J.A., Garrett Jr. W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Biomechanics laboratory-based prediction algorithm to identify female athletes with high knee loads that increase risk of ACL injury, Br J Sports Med; Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Clinical correlates to laboratory measures for use in non-contact anterior cruciate ligament injury risk prediction algorithm, Clin Biomech, 25, 7, pp. 693-699, (2010); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Development and validation of a clinic-based prediction tool to identify female athletes at high risk for anterior cruciate ligament injury, Am J Sports Med; Ekegren C.L., Miller W.C., Celebrini R.G., Eng J.J., Macintyre D.L., Reliability and validity of observational risk screening in evaluating dynamic knee valgus, J Orthop Sports Phys Ther, 39, 9, pp. 665-674, (2009); Myer G.D., Ford K.R., Barber Foss K.D., Liu C., Nick T.G., Hewett T.E., The relationship of hamstrings and quadriceps strength to anterior cruciate ligament injury in female athletes, Clin J Sport Med, 19, 1, pp. 3-8, (2009); Ford K.R., Myer G.D., Hewett T.E., Reliability of landing 3D motion analysis: Implications for longitudinal analyses, Medicine and Science in Sports and Exercise, 39, 11, pp. 2021-2028, (2007); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Medicine and Science in Sports and Exercise, 35, 10, pp. 1745-1750, (2003); Myer G.D., Ford K.R., Hewett T.E., New method to identify athletes at high risk of ACL injury using clinic-based measurements and freeware computer analysis, Br J Sports Med; Uhorchak J.M., Scoville C.R., Williams G.N., Arciero R.A., St P.P., Taylor D.C., Risk Factors Associated with Noncontact Injury of the Anterior Cruciate Ligament. 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Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Medicine and Science in Sports and Exercise, 33, 7, pp. 1168-1175, (2001); Li G., Rudy T.W., Sakane M., Kanamori A., Ma C.B., Woo S.L.-Y., The importance of quadriceps and hamstring muscle loading on knee kinematics and in-situ forces in the ACL, Journal of Biomechanics, 32, 4, pp. 395-400, (1999); Ford K.R., Van D.B.J., Myer G.D., Shapiro R., Hewett T.E., The effects of age and skill level on knee musculature co-contraction during functional activities: A systematic review, British Journal of Sports Medicine, 42, 7, pp. 561-566, (2008); Shultz S.J., Perrin D.H., Adams J.M., Arnold B.L., Gansneder B.M., Granata K.P., Neuromuscular Response Characteristics in Men and Women after Knee Perturbation in a Single-Leg, Weight-Bearing Stance, Journal of Athletic Training, 36, 1, pp. 37-43, (2001); Griffin L.Y., Albohm M.J., Arendt E.A., Et al., Understanding and preventing noncontact anterior cruciate ligament injuries: A review of the Hunt Valley II meeting, January 2005, Am J Sports Med, 34, 9, pp. 1512-1532, (2006); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes: Decreased impact forces and increased hamstring torques, American Journal of Sports Medicine, 24, 6, pp. 765-773, (1996); Myer G.D., Ford K.R., Brent J.L., Hewett T.E., Differential neuromuscular training effects on ACL injury risk factors in ""high-risk"" versus ""low-risk"" athletes, BMC Musculoskelet Disord, 8, (2007); Myer G.D., Ford K.R., McLean S.G., Hewett T.E., The effects of plyometric versus dynamic stabilization and balance training on lower extremity biomechanics, American Journal of Sports Medicine, 34, 3, pp. 445-455, (2006); Myer G.D., Ford K.R., Palumbo J.P., Hewett T.E., Neuromuscular training improves performance and lower-extremity biomechanics in female athletes, Journal of Strength and Conditioning Research, 19, 1, pp. 51-60, (2005); Grindstaff T.L., Hammill R.R., Tuzson A.E., Hertel J., Neuromuscular control training programs and noncontact anterior cruciate ligament injury rates in female athletes: A numbers-needed-to-treat analysis, Journal of Athletic Training, 41, 4, pp. 450-456, (2006)","G. D. Myer; Cincinnati Children's Hospital, MLC 10001, Cincinnati, OH 45229, 3333 Burnet Ave., United States; email: greg.myer@chmcc.org","","JTE Multimedia","00913847","","PHSPD","21378483","English","Phys. Sportsmed.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-79952240847" "Dezman Z.D.W.; Ledet E.H.; Kerr H.A.","Dezman, Zachary D.W. (54901991100); Ledet, Eric H. (6602175721); Kerr, Hamish A. (24469869400)","54901991100; 6602175721; 24469869400","Neck Strength Imbalance Correlates With Increased Head Acceleration in Soccer Heading","2013","Sports Health","5","4","","320","326","6","60","10.1177/1941738113480935","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879154836&doi=10.1177%2f1941738113480935&partnerID=40&md5=deaf4bb035e8c0dd2c82782df71eb1d3","Albany Medical College, Albany, NY, United States; Rensselaer Polytechnic Institute, Troy, NY, United States","Dezman Z.D.W., Albany Medical College, Albany, NY, United States; Ledet E.H., Rensselaer Polytechnic Institute, Troy, NY, United States; Kerr H.A., Albany Medical College, Albany, NY, United States","Background: Soccer heading is using the head to directly contact the ball, often to advance the ball down the field orscore. It is a skill fundamental to the game, yet it has come under scrutiny. Repeated subclinical effects of heading maycompound over time, resulting in neurologic deficits. Greater head accelerations are linked to brain injury. Developing anunderstanding of how the neck muscles help stabilize and reduce head acceleration during impact may help prevent braininjury.Hypothesis: Neck strength imbalance correlates to increasing head acceleration during impact while heading a soccer ball.Study Design: Observational laboratory investigation.Methods: Sixteen Division I and II collegiate soccer players headed a ball in a controlled indoor laboratory setting whileplayer motions were recorded by a 14-camera Vicon MX motion capture system. Neck flexor and extensor strength of eachplayer was measured using a spring-type clinical dynamometer.Results: Players were served soccer balls by hand at a mean velocity of 4.29 m/s (±0.74 m/s). Players returned the ball tothe server using a heading maneuver at a mean velocity of 5.48 m/s (±1.18 m/s). Mean neck strength difference was positivelycorrelated with angular head acceleration (rho = 0.497; P = 0.05), with a trend toward significance for linear headacceleration (rho = 0.485; P = 0.057).Conclusion: This study suggests that symmetrical strength in neck flexors and extensors reduces head acceleration experiencedduring low-velocity heading in experienced collegiate players.Clinical Relevance: Balanced neck strength may reduce head acceleration cumulative subclinical injury. Since neckstrength is a measureable and amenable strength training intervention, this may represent a modifiable intrinsic risk factorfor injury. © 2013 The Author(s).","acceleration; biomechanics; heading; neck strength; soccer","","Bauer J.A., Thomas T.S., Cauraugh J.H., Kaminski T.W., Hass C.J., Impact forces and neck muscle activity in heading by collegiate female soccer players, J Sports Sci, 19, pp. 171-179, (2001); Broglio S.P., Guskiewicz K.M., Sell T.C., Lephart S.M., No acute changes in postural control after soccer heading, Br J Sports Med, 38, pp. 561-567, (2004); Broglio S.P., Ju Y.Y., Broglio M.D., Sell T.C., The efficacy of soccer headgear, J Athl Train, 38, pp. 220-224, (2003); Burslem I., Lees A., Science and Football, pp. 243-248, (1988); Drez D., Delee & Drez's Orthopaedic Sports Medicine, (2009); Dvorak J., Junge A., McCrory P., Head injuries: do heading and head injuries in football lead to long term cognitive impairment?, Br J Sports Med, 39, (2005); Erkmen N., Evaluating the heading in professional soccer players by playing positions, J Strength Cond Res, 23, pp. 1723-1728, (2009); Foster C., Faber M.J., Porcari J.P., ACSM's Primary Care Sports Medicine, (2007); Frechede B., McIntosh A.S., Numerical reconstruction of real-life concussive football impacts, Med Sci Sports Exerc, 41, pp. 390-398, (2009); Fuller C.W., Junge A., Dvorak J., A six year prospective study of the incidence and causes of head and neck injuries in international football, Br J Sports Med, 39, (2005); Guskiewicz K.M., Marshall S.W., Broglio S.P., Cantu R.C., Kirkendall D.T., No evidence of impaired neurocognitive performance in collegiate soccer players, Am J Sports Med, 30, pp. 157-162, (2002); Hanlon E., Bir C., Real-time head acceleration measurement in girls' youth soccer, Med Sci Sports Exerc; Hanlon E., Bir C., Validation of a wireless head acceleration measurement system for use in soccer play, J Appl Biomech, 26, pp. 424-431, (2010); Hewett T.E., Ford K.R., Myer G.D., Anterior cruciate ligament injuries in female athletes: part 2, a meta-analysis of neuromuscular interventions aimed at injury prevention, Am J Sports Med, 34, pp. 490-498, (2006); Hewett T.E., Myer G.D., Ford K.R., Anterior cruciate ligament injuries in female athletes: part 1, mechanisms and risk factors, Am J Sports Med, 34, pp. 299-311, (2006); Hewett T.E., Myer G.D., Ford K.R., Slauterbeck J.R., Dynamic neuromuscular analysis training for preventing anterior cruciate ligament injury in female athletes, Instr Course Lect, 56, pp. 397-406, (2007); Ito Y., Corna S., von Brevern M., Bronstein A., Gresty M., The functional effectiveness of neck muscle reflexes for head-righting in response to sudden fall, Exp Brain Res, 117, pp. 266-272, (1997); Janda D.H., Bir C.A., Cheney A.L., An evaluation of the cumulative concussive effect of soccer heading in the youth population, Inj Control Saf Promot, 9, pp. 25-31, (2002); Kerr H., Riches P., Distributions of peak head accelerations during soccer heading vary between novice and skilled females, Br J Sports Med, 38, pp. 650-653, (2004); Kirkendall D.T., Garrett W.E., Heading in soccer: integral skill or grounds for cognitive dysfunction?, J Athl Train, 36, pp. 328-333, (2001); Kirkendall D.T., Jordan S.E., Garrett W.E., Heading and head injuries in soccer, Sports Med, 31, pp. 369-386, (2001); Koutures C.G., Gregory A.J., Injuries in youth soccer, Pediatrics, 125, pp. 410-414, (2010); Kumar S., Narayan Y., Amell T., Role of awareness in head-neck acceleration in low velocity rear-end impacts, Accid Anal Prev, 32, pp. 233-241, (2000); Lees A., Nolan L., The biomechanics of soccer: a review, J Sports Sci, 16, pp. 211-234, (1998); Lincoln A.E., Hinton R.Y., Almquist J.L., Lager S.L., Dick R.W., Head, face, and eye injuries in scholastic and collegiate lacrosse: a 4-year prospective study, Am J Sports Med, 35, pp. 207-215, (2007); Mansell J., Tierney R.T., Sitler M.R., Swanik K.A., Stearne D., Resistance training and head-neck segment dynamic stabilization in male and female collegiate soccer players, J Athl Train, 40, pp. 310-319, (2005); Matser E.J., Kessels A.G., Jordan B.D., Lezak M.D., Troost J., Chronic traumatic brain injury in professional soccer players, Neurology, 51, pp. 791-796, (1998); Matser E.J., Kessels A.G., Lezak M.D., Jordan B.D., Troost J., Neuropsychological impairment in amateur soccer players, JAMA, 282, pp. 971-973, (1999); Matser E.J., Kessels A.G., Lezak M.D., Troost J., A dose-response relation of headers and concussions with cognitive impairment in professional soccer players, J Clin Exp Neuropsychol, 23, pp. 770-774, (2001); McCrory P.R., Brain injury and heading in soccer, BMJ, 327, pp. 351-352, (2003); McIntosh A.S., McCrory P., Effectiveness of headgear in a pilot study of under 15 rugby union football, Br J Sports Med, 35, pp. 167-169, (2001); McIntosh A.S., McCrory P., Finch C.F., Best J.P., Chalmers D.J., Wolfe R., Does padded headgear prevent head injury in rugby union football?, Med Sci Sports Exerc, 41, pp. 306-313, (2009); Naunheim R.S., Bayly P.V., Standeven J., Neubauer J.S., Lewis L.M., Genin G.M., Linear and angular head accelerations during heading of a soccer ball, Med Sci Sports Exerc, 35, pp. 1406-1412, (2003); Naunheim R.S., Ryden A., Standeven J., Et al., Does soccer headgear attenuate the impact when heading a soccer ball?, Acad Emerg Med, 10, pp. 85-90, (2003); 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Correlation of experimental and clinical observations of blunt head injuries, Brain, 97, pp. 633-654, (1974); Ouellette J., Is heading safe?, (2011); Prasad P., Mertz H., The position of the United States delegation to the ISO Working Group on the Use of HIC in the Automotive Environment, SAE Technical Paper 851246, (1985); Putukian M., Heading in soccer: is it safe?, Curr Sports Med Rep, 3, pp. 9-14, (2004); Putukian M., Echemendia R.J., Mackin S., The acute neuropsychological effects of heading in soccer: a pilot study, Clin J Sport Med, 10, pp. 104-109, (2000); Queen R.M., Weinhold P.S., Kirkendall D.T., Yu B., Theoretical study of the effect of ball properties on impact force in soccer heading, Med Sci Sports Exerc, 35, pp. 2069-2076, (2003); Riches P., A dynamic model of the head acceleration associated with heading a soccer ball, Sports Engin, 9, pp. 39-47, (2005); Schneider K., Zernicke R.F., Computer simulation of head impact: estimation of head-injury risk during soccer heading, Int J Sport Biomech, 4, pp. 358-371, (1988); Shapiro I., Frankel V.H., Basic Biomechanics of the Musculoskeletal System, pp. 209-224, (1989); Shewchenko N., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football. Part 1: development of biomechanical methods to investigate head response, Br J Sports Med, 39, (2005); Shewchenko N., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football. Part 2: biomechanics of ball heading and head response, Br J Sports Med, 39, (2005); Tierney R.T., Higgins M., Caswell S.V., Et al., Sex differences in head acceleration during heading while wearing soccer headgear, J Athl Train, 43, pp. 578-584, (2008); Winter D., Biomechanics and Motor Control of Human Movement, (2009); (2012)","H. A. Kerr; Albany Medical College, Division of Internal Medicine/Pediatrics, Latham, NY 12110, 724 Watervliet-Shaker Road, United States; email: kerrh@mail.amc.edu","","","19410921","","","","English","Sports Health","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84879154836" "Brophy R.H.; Backus S.; Kraszewski A.P.; Steele B.C.; Yan M.; Osei D.; Williams R.J.","Brophy, Robert H. (13805213600); Backus, Sherry (7005788021); Kraszewski, Andrew P. (36437240400); Steele, Barbara C. (57196772786); Yan, Ma (36612471600); Osei, Daniel (13104337600); Williams, Riley J. (24571844600)","13805213600; 7005788021; 36437240400; 57196772786; 36612471600; 13104337600; 24571844600","Differences between sexes in lower extremity alignment and muscle activation during soccer kick","2010","Journal of Bone and Joint Surgery","92","11","","2050","2058","8","50","10.2106/JBJS.I.01547","https://www.scopus.com/inward/record.uri?eid=2-s2.0-77956646930&doi=10.2106%2fJBJS.I.01547&partnerID=40&md5=dc31e592d16907d6767120d9c5f449be","Washington University Orthopedics, Chesterfield, MO 63017, 14532 South Outer Forty Drive, United States; Hospital for Special Surgery, New York, NY 10021, 535 East 70th Street, United States","Brophy R.H., Washington University Orthopedics, Chesterfield, MO 63017, 14532 South Outer Forty Drive, United States; Backus S., Hospital for Special Surgery, New York, NY 10021, 535 East 70th Street, United States; Kraszewski A.P., Hospital for Special Surgery, New York, NY 10021, 535 East 70th Street, United States; Steele B.C., Hospital for Special Surgery, New York, NY 10021, 535 East 70th Street, United States; Yan M., Hospital for Special Surgery, New York, NY 10021, 535 East 70th Street, United States; Osei D., Hospital for Special Surgery, New York, NY 10021, 535 East 70th Street, United States; Williams R.J., Hospital for Special Surgery, New York, NY 10021, 535 East 70th Street, United States","Background: Injury risk in soccer varies by sex. Female soccer players face a greater risk of anterior cruciate ligament injury and patellofemoral problems, while male players are more likely to experience sports hernia symptoms. The purpose of this study was to test the hypothesis that females have different lower-extremity alignment and muscle activation patterns than males during the soccer kick. Methods: Thirteen male and twelve female college soccer players underwent three-dimensional motion analysis and electromyography of seven muscles (iliacus, gluteus maximus, gluteus medius, vastus lateralis, vastus medialis, hamstrings, and gastrocnemius) in both the kicking and the supporting lower extremity and two additional muscles (hip adductors and tibialis anterior) in the kicking limb only. Five instep and five side-foot kicks were recorded for each player. Muscle activation was recorded as a percentage of maximum voluntary isometric contraction. Results: The male soccer players had significantly higher mean muscle activation than their female counterparts with respect to the iliacus in the kicking limb (123% compared with 34% of maximal voluntary isometric contraction; p = 0.0007) and the gluteus medius (124% compared with 55%; p = 0.005) and vastus medialis muscles (139% compared with 69%; p = 0.002) in the supporting limb. The supporting limb reached significantly greater mean hip adduction during the stance phase of the kick in the females compared with that in the males (15° and 10°, respectively; p = 0.006). Conclusions: Differences between the sexes in lower extremity alignment and muscle activation occur during the soccer instep and side-foot kicks. Decreased activation of the hip abductors and greater hip adduction in the supporting limb during the soccer kick in female athletes may be associated with their increased risk for anterior cruciate ligament injury. Clinical Relevance: Programs targeting these differences in muscle activation and lower extremity alignment during the kick should be evaluated for use in injury prevention in soccer athletes. Future research is warranted to investigate how differences between the sexes at the hip may relate to differences in the risk of lower extremity injury among athletes in soccer and other sports. Copyright © 2010 by The Journal of Bone and Joint Surgery, Incorporated.","","Athletic Performance; Biomechanics; Electromyography; Female; Humans; Isometric Contraction; Lower Extremity; Male; Muscle, Skeletal; Risk Factors; Sex Factors; Soccer; Young Adult; adult; article; controlled study; electromyography; female; gastrocnemius muscle; gluteus maximus muscle; hamstring; human; isometrics; male; motion analysis system; muscle function; priority journal; sex difference; sport; vastus lateralis muscle; vastus medialis muscle; athletic performance; biomechanics; injury; leg; muscle isometric contraction; physiology; risk factor; skeletal muscle","Dvorak J., Junge A., Football injuries and physical symptoms. 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Roos H., Ornell M., Gardsell P., Lohmander L.S., Lindstrand A., Soccer after anterior cruciate ligament injury - An incompatible combination? A national survey of incidence and risk factors and a 7-year follow-up of 310 players, Acta Orthop Scand, 66, pp. 107-112, (1995); Zazulak B.T., Ponce P.L., Straub S.J., Medvecky M.J., Avedisian L., Hewett T.E., Gender comparison of hip muscle activity during single-leg landing, Journal of Orthopaedic and Sports Physical Therapy, 35, 5, pp. 292-299, (2005); Gilchrist J., Mandelbaum B.R., Melancon H., Ryan G.W., Silvers H.J., Griffin L.Y., Watanabe D.S., Dick R.W., Dvorak J., A randomized controlled trial to prevent non-contact anterior cruciate ligament injury in female collegiate soccer players, Am J Sports Med, 36, pp. 1476-1483, (2008); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Knarr J.F., Thomas S.D., Griffin L.Y., Kirkendall D.T., Garrett Jr. W., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes: 2-year follow-up, Am J Sports Med, 33, pp. 1003-1010, (2005); Brynhildsen J., Ekstrand J., Jeppsson A., Tropp H., Previous injuries and persisting symptoms in female soccer players, Int J Sports Med, 11, pp. 489-492, (1990); Soderman K., Alfredson H., Pietila T., Werner S., Risk factors for leg injuries in female soccer players: A prospective investigation during one out-door season, Knee Surg Sports Traumatol Arthrosc, 9, pp. 313-321, (2001); Beaulieu M.L., Lamontagne M., Xu L., Lower limb muscle activity and kinematics of an unanticipated cutting manoeuvre: A gender comparison, Knee Surg Sports Traumatol Arthrosc, 17, pp. 968-976, (2009); Escamilla R.F., Andrews J.R., Shoulder muscle recruitment patterns and related biomechanics during upper extremity sports, Sports Med, 39, pp. 569-590, (2009); Zakaria D., Harburn K.L., Kramer J.F., Preferential activation of the vastus medialis oblique, vastus lateralis, and hip adductor muscles during isometric exercises in females, J Orthop Sports Phys Ther, 26, pp. 23-28, (1997)","R. H. Brophy; Washington University Orthopedics, Chesterfield, MO 63017, 14532 South Outer Forty Drive, United States; email: brophyr@wudosis.wustl.edu","","Journal of Bone and Joint Surgery Inc.","00219355","","JBJSA","20686049","English","J. Bone Jt. Surg. Ser. A","Article","Final","","Scopus","2-s2.0-77956646930" "Weir G.; van Emmerik R.; Jewell C.; Hamill J.","Weir, Gillian (57191862814); van Emmerik, Richard (6701566610); Jewell, Carl (57188538108); Hamill, Joseph (19734120100)","57191862814; 6701566610; 57188538108; 19734120100","Coordination and variability during anticipated and unanticipated sidestepping","2019","Gait and Posture","67","","","1","8","7","41","10.1016/j.gaitpost.2018.09.007","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053499245&doi=10.1016%2fj.gaitpost.2018.09.007&partnerID=40&md5=d80dfa802b1b911942c9e31f247d8bb3","Biomechanics Laboratory, University of Massachusetts Amherst, United States; Motor Control Laboratory, University of Massachusetts Amherst, United States","Weir G., Biomechanics Laboratory, University of Massachusetts Amherst, United States; van Emmerik R., Motor Control Laboratory, University of Massachusetts Amherst, United States; Jewell C., Biomechanics Laboratory, University of Massachusetts Amherst, United States; Hamill J., Biomechanics Laboratory, University of Massachusetts Amherst, United States","Background: Numerous investigations have attempted to link the incidence and risk of non-contact anterior cruciate ligament injuries to specific intrinsic and extrinsic mechanisms. However, these are often measured in isolation. Research question: This study utilizes a dynamical systems approach to investigate differences in coordination and coordination variability between segments and joints in anticipated and unanticipated sidestepping, a task linked to a high risk of non-contact anterior cruciate ligament injuries. Methods: Full body, three-dimensional kinematics and knee kinetic data were collected on 22 male collegiate soccer players during anticipated and unanticipated sidestepping tasks. A modified vector coding technique was used to quantify coordination and coordination variability of the trunk and pelvis segments and the hip and knee joints. Results: Sagittal and frontal plane trunk-pelvis coordination were more in-phase during unanticipated sidestepping. Sagittal plane hip-knee and hip (rotation)-knee (flexion/extension) coordination were more in-phase with the knee dominating the movement during unanticipated sidestepping (P < 0.05). Coordination variability was greater in unanticipated sidestepping for trunk (flexion)-pelvis (tilt), trunk (lateral flexion)-pelvis (obliquity), hip (flexion/extension)-knee (flexion/extension) and hip (rotation)-knee (flexion/extension) (P < 0.05). In unanticipated sidestepping where there is limited time to pre-plan the movement, multiple kinematic solutions and high coordinative variability is required to achieve the task. Significance: Our results suggest that coordination becomes more in-phase and the variability of this coordination increases as a function of task complexity and reduced planning time as that which occurs in unanticipated sporting task scenarios. Consequently, injury prevention programs must incorporate perceptual components in order to optimise planning time and coordinate appropriate postural adjustments to reduce external knee joint loading and subsequent injury risk in sport. © 2018","Anterior cruciate ligament; Dynamical systems; Knee; Trunk; Vector coding","Adult; Anterior Cruciate Ligament Injuries; Athletic Injuries; Biomechanical Phenomena; Humans; Knee Joint; Male; Pelvis; Range of Motion, Articular; Soccer; Torso; Young Adult; accident prevention; adult; anterior cruciate ligament injury; Article; clinical article; coordination; gait; ground reaction force; human; kinematics; male; priority journal; range of motion; sidestepping; soccer player; sport injury; stride time variability; biomechanics; injuries; joint characteristics and functions; knee; pathophysiology; pelvis; soccer; trunk; young adult","Alentorn-Geli E., Myer G.D., Silvers H.J., Samitier G., Romero D., Lazaro-Haro C., Cugat R., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: mechanisms of injury and underlying risk factors, Knee Surg. Sports Traumatol. Arthrosc. Off. J. ESSKA, 17, pp. 705-729, (2009); Cochrane J.L., Lloyd D.G., Buttfield A., Seward H., McGivern J., Characteristics of anterior cruciate ligament injuries in Australian football, J. Sci. Med. Sport, 10, pp. 96-104, (2007); Patla A.E., Adkin A., Ballard T., Online steering: coordination and control of body center of mass, head and body reorientation, Exp. Brain Res., 129, pp. 629-634, (1999); Besier T.F., Lloyd D.G., Ackland T.R., Cochrane J.L., Anticipatory effects on knee joint loading during running and cutting maneuvers, Med. Sci. Sports Exerc., 33, pp. 1176-1181, (2001); Mornieux G., Gehring D., Furst P., Gollhofer A., Anticipatory postural adjustments during cutting manoeuvres in football and their consequences for knee injury risk, J. Sports Sci., 32, pp. 1255-1262, (2014); Donnelly C.J., Elliott B.C., Ackland T.R., Doyle T.L.A., Beiser T.F., Finch C.F., Cochrane J.L., Dempsey A.R., Lloyd D.G., An anterior cruciate ligament injury prevention framework: incorporating the recent evidence, Res. Sports Med., 20, pp. 239-262, (2012); Donnelly C.J., Lloyd D.G., Elliott B.C., Reinbolt J.A., Optimizing whole-body kinematics to minimize valgus knee loading during sidestepping: implications for ACL injury risk, J. Biomech., 45, pp. 1491-1497, (2012); Zazulak B.T., Hewett T.E., Reeves N.P., Goldberg B., Cholewicki J., Deficits in neuromuscular control of the trunk predict knee injury risk, Am. J. Sports Med., 35, pp. 1123-1130, (2007); McLean S.G., Huang X., Van Den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: implications for ACL injury, Clin. Biomech., 20, pp. 863-870, (2005); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Van den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes, Am. J. Sports Med., 33, pp. 492-501, (2005); Hashemi J., Breighner R., Chandrashekar N., Hardy D.M., Chaudhari A.M., Shultz S.J., Slauterbeck J.R., Beynnon B.D., Hip extension, knee flexion paradox: a new mechanism for non-contact ACL injury, J. Biomech., 44, pp. 577-585, (2011); Robinson M.A., Donnely C.J., Vanrenterghem J., Pataky T.C., Sagittal plane kinematics predict non-sagittal joint moments in unplanned sidestepping, 25th Congr. Int. Soc. Biomech. Glasg. UK 12th–16th July, (2015); Donnelly C.J., Chinnasee C., Weir G., Sasimontonkul S., Alderson J., Joint dynamics of rear-and fore-foot unplanned sidestepping, J. Sci. Med. Sport, 20, pp. 32-37, (2017); Brown S.R., Brughelli M., Hume P.A., Knee mechanics during planned and unplanned sidestepping: a systematic review and meta-analysis, Sports Med., 44, pp. 1573-1588, (2014); Bernstein N.A., The Control and Regulation of Movements, (1967); Hamill J., Palmer C., Van Emmerik R.E., Coordinative variability and overuse injury, BMC Sports Sci. Med. Rehabil., 4, (2012); Heiderscheit B.C., Hamill J., van Emmerik R.E., Variability of stride characteristics and joint coordination among individuals with unilateral patellofemoral pain, J. Appl. Biomech., 18, pp. 110-121, (2002); Seay J.F., Van Emmerik R.E., Hamill J., Low back pain status affects pelvis-trunk coordination and variability during walking and running, Clin. Biomech., 26, pp. 572-578, (2011); Besier T.F., Sturnieks D.L., Alderson J.A., Lloyd D.G., Repeatability of gait data using a functional hip joint centre and a mean helical knee axis, J. Biomech., 36, pp. 1159-1168, (2003); Donnelly C.J., Elliott B.C., Doyle T.L., Finch C.F., Dempsey A.R., Lloyd D.G., Changes in knee joint biomechanics following balance and technique training and a season of Australian football, Br. J. Sports Med., (2012); Cappello A., Cappozzo A., La Palombara P.F., Lucchetti L., Leardini A., Multiple anatomical landmark calibration for optimal bone pose estimation, Hum. Mov. Sci., 16, pp. 259-274, (1997); Vanrenterghem J., Venables E., Pataky T., Robinson M.A., The effect of running speed on knee mechanical loading in females during side cutting, J. Biomech., 45, pp. 2444-2449, (2012); Wu G., Siegler S., Allard P., Kirtley C., Leardini A., Rosenbaum D., Whittle M., D'Lima D.D., Cristofolini L., Witte H., ISB recommendation on definitions of joint coordinate system of various joints for the reporting of human joint motion—part I: ankle, hip, and spine, J. Biomech., 35, pp. 543-548, (2002); Chang R., Van Emmerik R., Hamill J., Quantifying rearfoot–forefoot coordination in human walking, J. Biomech., 41, pp. 3101-3105, (2008); Needham R.A., Naemi R., Chockalingam N., A new coordination pattern classification to assess gait kinematics when utilising a modified vector coding technique, J. Biomech., 48, pp. 3506-3511, (2015); Cohen J., Statistical Power Analyses For the Social Sciences, (1988); Pataky T.C., Robinson M.A., Vanrenterghem J., Vector field statistical analysis of kinematic and force trajectories, J. Biomech., 46, pp. 2394-2401, (2013); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Russo K.A., The effect of technique change on knee loads during sidestep cutting, Med. Sci. Sports Exerc., 39, pp. 1765-1773, (2007); Kristianslund E., Faul O., Bahr R., Myklebust G., Krosshaug T., Sidestep cutting technique and knee abduction loading: implications for ACL prevention exercises, Br. J. Sports Med., 48, pp. 779-783, (2014); Schmitz R.J., Shultz S.J., Nguyen A.-D., Dynamic valgus alignment and functional strength in males and females during maturation, J. Athl. Train., 44, pp. 26-32, (2009); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Med. Sci. Sports Exerc., 35, pp. 119-127, (2003); Sigward S.M., Pollard C.D., Havens K.L., Powers C.M., The influence of sex and maturation on knee mechanics during side-step cutting, Med. Sci. Sports Exerc., 44, (2012); Pollard C.D., Heiderscheit B.C., Van Emmerik R.E., Hamill J., Gender differences in lower extremity coupling variability during an unanticipated cutting maneuver, J. Appl. Biomech., 21, pp. 143-152, (2005); Hamill J., Haddad J.M., McDermott W.J., Issues in quantifying variability from a dynamical systems perspective, J. Appl. Biomech., 16, pp. 407-418, (2000)","G. Weir; University of Massachusetts, 23A Totman Building, 30 Eastman Lane, 01003-9258, United States; email: gweir@umass.edu","","Elsevier B.V.","09666362","","GAPOF","30245239","English","Gait Posture","Article","Final","","Scopus","2-s2.0-85053499245" "Coratella G.; Beato M.; Schena F.","Coratella, Giuseppe (56047352300); Beato, Marco (56254437100); Schena, Federico (16182326400)","56047352300; 56254437100; 16182326400","Correlation between quadriceps and hamstrings inter-limb strength asymmetry with change of direction and sprint in U21 elite soccer-players","2018","Human Movement Science","59","","","81","87","6","54","10.1016/j.humov.2018.03.016","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044769145&doi=10.1016%2fj.humov.2018.03.016&partnerID=40&md5=b1b3b80d30640f79bdada91582f266bd","Department of Biomedical Sciences for Health, University of Milano, Italy; Department of Neurological, Biomedical and Movement Sciences, University of Verona, Italy; Faculty of Health and Science, Department of Science and Technology, University of Suffolk, Ipswich, United Kingdom","Coratella G., Department of Biomedical Sciences for Health, University of Milano, Italy, Department of Neurological, Biomedical and Movement Sciences, University of Verona, Italy; Beato M., Faculty of Health and Science, Department of Science and Technology, University of Suffolk, Ipswich, United Kingdom; Schena F., Department of Neurological, Biomedical and Movement Sciences, University of Verona, Italy","The aim of this study was to investigate the relationship between in quadriceps and hamstrings inter-limb strength asymmetry and change of direction, sprinting and jumping abilities in U21 elite soccer players. Twenty-seven soccer players volunteered for this study. Isokinetic quadriceps and hamstrings peak torque was measured at high and low angular velocities, both in concentric and eccentric modalities. Performance in agility T-test, 20 + 20 m shuttle-test, 10 m and 30 m sprint, squat jump (SJ) and counter-movement jump (CMJ), were measured. Overall, time on agility T-test and 20 + 20 m shuttle-test was moderately and positively correlated with the quadriceps and hamstrings inter-limb eccentric peak torque asymmetry, both at high and low angular velocities. In addition, time on 10 m and 30 m sprints was moderately and positively correlated with the hamstrings inter-limb high-velocity concentric peak torque asymmetry. SJ and CMJ showed trivial to small correlations with hamstrings and quadriceps inter-limb peak torque asymmetry. The present results provide further information insight the role of lower-limb muscle strength balance in COD, sprinting and jumping performance. © 2018 Elsevier B.V.","Agility T-test; Counter-movement jump; Isokinetic peak-torque; Shuttle test; Squat jump","Biomechanical Phenomena; Hamstring Muscles; Humans; Male; Muscle Strength; Quadriceps Muscle; Running; Soccer; Thigh; Torque; Young Adult; adult; agility; article; chemical oxygen demand; clinical article; female; hamstring muscle; human; jumping; male; muscle strength; quadriceps femoris muscle; soccer player; torque; biomechanics; hamstring muscle; physiology; quadriceps femoris muscle; running; soccer; thigh; torque; young adult","Alemdaroglu U., The relationship between muscle strength, anaerobic performance, agility, sprint ability and vertical jump performance in professional basketball players, Journal of Human Kinetics, 31, pp. 149-158, (2012); Bobbert M.F., Gerritsen K.G.M., Litjens M.C.A., Van Soest A.J., Why is countermovement jump height greater than squat jump height?, Medicine and Science in Sports and Exercise, 28, 11, pp. 1402-1412, (1996); Brooks K.A., Clark S.L., Dawes J.J., Isokinetic strength and performance in collegiate women's soccer, Journal of Novel Physiotherapies, Suppl. 3, (2013); Bush M., Barnes C., Archer D.T., Hogg B., Bradley P.S., Evolution of match performance parameters for various playing positions in the English Premier League, Human Movement Science, 39, pp. 1-11, (2015); Chaouachi A., Manzi V., Chaalali A., Wong D.P., Chamari K., Castagna C., Determinants analysis of change-of-direction ability in elite soccer players, Journal of Strength and Conditioning Research/National Strength & Conditioning Association, 26, 10, pp. 2667-2676, (2012); Comfort P., Stewart A., Bloom L., Clarkson B., Relationship between strength, sprint and jump performance in well trained youth soccer players, Journal of Strength & Conditioning Research, 28, 1, pp. 173-177, (2014); Coratella G., Beato M., Schena F., The specificity of the Loughborough Intermittent Shuttle Test for recreational soccer players is independent of their intermittent running ability, Research in Sports Medicine, 24, 4, pp. 363-374, (2016); Coratella G., Bellin G., Beato M., Schena F., Fatigue affects peak joint torque angle in hamstrings but not in quadriceps, Journal of Sports Sciences, 33, 12, pp. 1276-1282, (2015); Coratella G., Bellini V., Schena F., Shift of optimum angle after concentric-only exercise performed at long vs. short muscle length, Sport Sciences for Health, 12, 1, pp. 85-90, (2016); Coratella G., Bertinato L., Isoload vs isokinetic eccentric exercise: A direct comparison of exercise-induced muscle damage and repeated bout effect, Sport Sciences for Health, 11, 1, pp. 87-96, (2015); Coratella G., Milanese C., Schena F., Cross-education effect after unilateral eccentric-only isokinetic vs dynamic constant external resistance training, Sport Sciences for Health, 11, 3, pp. 329-335, (2015); Coratella G., Milanese C., Schena F., Unilateral eccentric resistance training: a direct comparison between isokinetic and dynamic constant external resistance modalities, European Journal of Sport Science, 15, 8, pp. 720-726, (2015); de Hoyo M., de la Torre A., Pradas F., Sanudo B., Carrasco L., Mateo-Cortes J., Gonzalo-Skok O., Effects of eccentric overload bout on change of direction and performance in soccer players, International Journal of Sports Medicine, 36, 4, pp. 308-314, (2015); Delextrat A., Gregory J., Cohen D., The use of the functional H: Q ratio to assess fatigue in soccer, International Journal of Sports Medicine, 31, 3, pp. 192-197, (2010); Exell T., Irwin G., Gittoes M., Kerwin D., Strength and performance asymmetry during maximal velocity sprint running, Scandinavian Journal of Medicine & Science in Sports, 27, pp. 1273-1282, (2017); Fousekis K., Tsepis E., Poulmedis P., Athanasopoulos S., Vagenas G., Intrinsic risk factors of non-contact quadriceps and hamstring strains in soccer: A prospective study of 100 professional players, British Journal of Sports Medicine, 45, 9, pp. 709-714, (2011); Fousekis K., Tsepis E., Vagenas G., Lower limb strength in professional soccer players: Profile, asymmetry, and training age, Journal of Sports Science and Medicine, 9, 3, pp. 364-373, (2010); Grouios G., Hatzitaki V., Kollias N., Koidou I., Investigating the stabilising and mobilising features of footedness, Laterality: Asymmetries of Body, Brain and Cognition, 14, 4, pp. 362-380, (2009); Hagglund M., Walden M., Ekstrand J., Risk factors for lower extremity muscle injury in professional soccer, The American Journal of Sports Medicine, 41, 2, pp. 327-335, (2013); Hopkins W.G., A spreadsheet for deriving a confidence interval, mechanistic inference and clinical inference from a p value, Sportscience, 11, pp. 16-20, (2007); Impellizzeri F.M., Rampinini E., Maffiuletti N., Marcora S.M., A vertical jump force test for assessing bilateral strength asymmetry in athletes, Medicine & Science in Sports & Exercise, 39, 11, pp. 2044-2050, (2007); Kellis E., Katis A., The relationship between isokinetic knee extension and flexion strength with soccer kick kinematics: An electromyographic evaluation, The Journal of Sports Medicine and Physical Fitness, 47, 4, pp. 385-394, (2007); Kobayashi Y., Kubo J., Matsubayashi T., Matsuo A., Kobayashi K., Ishii N., Relationship between bilateral differences in single-leg jumps and asymmetry in isokinetic knee strength, Journal of Applied Biomechanics, 29, 1, pp. 61-67, (2013); McLean B.D., Tumilty D.M., Left-right asymmetry in two types of soccer kick, British Journal of Sports Medicine, 27, 4, pp. 260-262, (1993); Mero A., Komi P.V., Gregor R.J., Biomechanics of sprint running. A review, Sports Medicine (Auckland, N.Z.), 13, 6, pp. 376-392, (1992); Morin J.-B., Gimenez P., Edouard P., Arnal P., Jimenez-Reyes P., Samozino P., Ellipsis Mendiguchia J., Sprint acceleration mechanics: The major role of hamstrings in horizontal force production, Frontiers in Physiology, 6, (2015); Nagahara R., Matsubayashi T., Matsuo A., Zushi K., Kinematics of transition during human accelerated sprinting, Biology Open, 3, 8, pp. 689-699, (2014); Neptune R.R., Wright I.C., van den Bogert A.J., Muscle coordination and function during cutting movements, Medicine and Science in Sports and Exercise, 31, 2, pp. 294-302, (1999); Newman M.A., Tarpenning K.M., Marino F.E., Relationships between isokinetic knee strength, single-sprint performance, and repeated-sprint ability in football players, Journal of Strength and Conditioning Research/National Strength & Conditioning Association, 18, 4, pp. 867-872, (2004); Ostenberg A., Roos E., Ekdahl C., Roos H., Isokinetic knee extensor strength and functional performance in healthy female soccer players, Scandinavian Journal of Medicine & Science in Sports, 8, 5, pp. 257-264, (1998); Rabita G., Dorel S., Slawinski J., Saez-de-Villarreal E., Couturier A., Samozino P., Morin J.-B., Sprint mechanics in world-class athletes: a new insight into the limits of human locomotion, Scandinavian Journal of Medicine & Science in Sports, 25, 5, pp. 583-594, (2015); Rahnama N., Reilly T., Lees A., Graham-Smith P., Muscle fatigue induced by exercise simulating the work rate of competitive soccer, Journal of Sports Sciences, 21, 11, pp. 933-942, (2003); Rand M.K., Ohtsuki T., EMG analysis of lower limb muscles in humans during quick change in running directions, Gait & Posture, 12, 2, pp. 169-183, (2000); Rouissi M., Chtara M., Owen A., Chaalali A., Chaouachi A., Gabbett T., Chamari K., Effect of leg dominance on change of direction ability amongst young elite soccer players, Journal of Sports Sciences, 34, 6, pp. 542-548, (2016); Silva J.R., Nassis G.P., Rebelo A., Strength training in soccer with a specific focus on highly trained players, Sports Medicine – Open, 1, 17, pp. 1-27, (2015); Wisloff U., Castagna C., Helgerud J., Jones R., Hoff J., Strong correlation of maximal squat strength with sprint performance and vertical jump height in elite soccer players, British Journal of Sports Medicine, 38, 3, pp. 285-288, (2004); Yoshioka S., Nagano A., Hay D.C., Fukashiro S., The effect of bilateral asymmetry of muscle strength on jumping height of the countermovement jump: A computer simulation study, Journal of Sports Sciences, 28, 2, pp. 209-218, (2010); Yoshioka S., Nagano A., Hay D.C., Fukashiro S., The effect of bilateral asymmetry of muscle strength on the height of a squat jump: A computer simulation study, Journal of Sports Sciences, 29, 8, pp. 867-877, (2011)","G. Coratella; Department of Biomedical Sciences for Health, University of Milano, Milano, Via Giuseppe Colombo 71, 20133, Italy; email: giuseppe.coratella@univr.it","","Elsevier B.V.","01679457","","HMSCD","29625360","English","Hum. Mov. Sci.","Article","Final","","Scopus","2-s2.0-85044769145" "Landry S.C.; McKean K.A.; Hubley-Kozey C.L.; Stanish W.D.; Deluzio K.J.","Landry, Scott C. (12773624500); McKean, Kelly A. (13403586300); Hubley-Kozey, Cheryl L. (6701405380); Stanish, William D. (7003622346); Deluzio, Kevin J. (6603424544)","12773624500; 13403586300; 6701405380; 7003622346; 6603424544","Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated run and crosscut maneuver","2007","American Journal of Sports Medicine","35","11","","1901","1911","10","56","10.1177/0363546507307400","https://www.scopus.com/inward/record.uri?eid=2-s2.0-35649026864&doi=10.1177%2f0363546507307400&partnerID=40&md5=d147b2b5e6e1920ce084904a9059a439","School of Biomedical Engineering, Dalhousie University, Halifax, NS, Canada; School of Physiotherapy, Dalhousie University, Halifax, NS, Canada; Department of Surgery, Division of Orthopaedics, Dalhousie University, Halifax, NS, Canada; Department of Mechanical and Materials Engineering, Queen's University, Kingston, Ont., Canada; Dalhousie University, Halifax, NS B3H 3J5, 5981 University Avenue, Canada","Landry S.C., School of Biomedical Engineering, Dalhousie University, Halifax, NS, Canada, Dalhousie University, Halifax, NS B3H 3J5, 5981 University Avenue, Canada; McKean K.A., School of Biomedical Engineering, Dalhousie University, Halifax, NS, Canada; Hubley-Kozey C.L., School of Biomedical Engineering, Dalhousie University, Halifax, NS, Canada, School of Physiotherapy, Dalhousie University, Halifax, NS, Canada; Stanish W.D., Department of Surgery, Division of Orthopaedics, Dalhousie University, Halifax, NS, Canada; Deluzio K.J., Department of Mechanical and Materials Engineering, Queen's University, Kingston, Ont., Canada","Background: Noncontact anterior cruciate ligament injuries often occur during sports such as soccer and basketball in which cutting or landing maneuvers are frequently performed. These injuries are more common in female athletes, and identifying biomechanical or neuromuscular risk factors related to gender may help with the development of preventive training programs aimed at reducing anterior cruciate ligament injury. Hypothesis: Lower limb biomechanical and/or neuromuscular differences between male and female soccer players will be identified during unanticipated running and cutting maneuvers. Study Design: Descriptive laboratory study. Methods: A complete 3-dimensional kinematic, kinetic, and electromyographic analysis of the lower limb for an unanticipated straight-run and crosscut maneuver was performed on 42 (male, 21; female, 21) elite adolescent soccer players. Results: For both maneuvers, female players had greater lateral gastrocnemius activity, normalized to maximal voluntary isometric contractions, and demonstrated a mediolateral gastrocnemii imbalance that was not present in male players. Rectus femoris activity for both maneuvers and vastus medialis and lateralis activity for the straight run only were also greater in female than in male athletes. Other notable differences captured for the maneuvers included female players having reduced hamstring activity, a reduced hip flexion moment, a reduced hip flexion angle, and an increased ankle eversion angle throughout stance compared with male players. Conclusion: This is one of the first studies to identify gastrocnemii differences between genders as a possible anterior cruciate ligament injury risk factor. Additional biomechanical and neuromuscular differences were also identified as potential risk factors. Clinical Relevance: These findings provide insight into the noncontact anterior cruciate ligament injury gender bias and may help improve preventive training programs. © 2007 American Orthopaedic Society for Sports Medicine.","Anterior cruciate ligament (ACL) injury; Crosscut; Electromyography (EMG); Gender; Kinematics; Kinetics; Running; Unanticipated","Adolescent; Anterior Cruciate Ligament; Biomechanics; Electromyography; Female; Humans; Knee Injuries; Leg; Male; Muscle, Skeletal; Principal Component Analysis; Range of Motion, Articular; Running; Soccer; adolescence; adolescent; ankle; anterior cruciate ligament; anterior cruciate ligament injury; anthropometry; article; biomechanics; electromyography; female; gastrocnemius muscle; hip; human; leg; male; muscle contraction; muscle isometric contraction; normal human; priority journal; rectus femoris muscle; risk factor; sport","Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer: NCAA data and review of literature, Am J Sports Med., 23, 6, pp. 694-701, (1995); Arms S.W., Pope M.H., Johnson R.J., Fischer R.A., Arvidsson I., Eriksson E., The biomechanics of anterior cruciate ligament rehabilitation and reconstruction, Am J Sports Med., 12, 1, pp. 8-18, (1984); Beckett M.E., Massie D.L., Bowers K.D., Stoll D.A., Incidence of hyper-pronation in the ACL injured knee: A clinical perspective, J Athl Train, 27, 1, pp. 58-62, (1992); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Med Sci Sports Exerc., 35, 1, pp. 119-127, (2003); Besier T.F., Lloyd D.G., Ackland T.R., Cochrane J.L., Anticipatory effects on knee joint loading during running and cutting maneuvers, Med Sci Sports Exerc., 33, 7, pp. 1176-1181, (2001); Beynnon B.D., Fleming B.C., Johnson R.J., Nichols C.E., Renstrom P.A., Pope M.H., Anterior cruciate ligament strain behavior during rehabilitation exercises in vivo, Am J Sports Med., 23, 1, pp. 24-34, (1995); Boden B.P., Dean G.S., Feagin Jr. J.A., Garrett Jr. W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Deluzio K.J., Wyss U.P., Zee B., Costigan P.A., Sorbie C., Principal component models of knee kinematics and kinetics: Normal vs. pathological gait patterns, Hum Mov Sci., 16, 2-3, pp. 201-217, (1997); Ferber R., Davis I.M., Williams D.S., Gender Differences in Lower Extremity Mechanics during Running. Clin Biomech, 18, 4, pp. 350-357, (2003); Fleming B.C., Renstrom P.A., Ohlen G., The gastrocnemius muscle is an antagonist of the anterior cruciate ligament, J Orthop Res, 19, 6, pp. 1178-1184, (2001); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Med Sci Sports Exerc., 37, 1, pp. 124-129, (2005); Furman W., Marshall J.L., Girgis F.G., The anterior cruciate ligament: A functional analysis based on postmortem studies, J Bone Joint Surg Am, 58, 2, pp. 179-185, (1976); Gauffin H., Tropp H., Altered movement and muscular-activation patterns during the one-legged jump in patients with an old anterior cruciate ligament rupture, Am J Sports Med., 20, 2, pp. 182-192, (1992); Goldfuss A.J., Morehouse C.A., Leveau B.F., Effect of muscular tension on knee stability, Med Sci Sports, 5, 4, pp. 267-271, (1973); Griffin L.Y., Agel J., Albohm M.J., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, J Am Acad Orthop Surg., 8, 3, pp. 141-150, (2000); Hewett T.E., Myer G.D., Ford K.R., Anterior cruciate ligament injuries in female athletes, part 1: Mechanisms and risk factors, Am J Sports Med., 34, 2, pp. 299-311, (2006); Houck J.R., Duncan A., De Haven K.E., Comparison of frontal plane trunk kinematics and hip and knee moments during anticipated and unanticipated walking and side step cutting tasks, Gait Posture, 24, 3, pp. 314-322, (2006); Hubley-Kozey C.L., Deluzio K.J., Landry S.C., McNutt J.S., Stanish W.D., Neuromuscular alterations during walking in persons with moderate knee osteoarthritis, J Electromyogr Kinesiol, 16, 4, pp. 365-378, (2006); Landry S.C., McKean K.A., Hubley-Kozey C.L., Stanish W.D., Deluzio K.J., Knee biomechanics of moderate OA patients measured during gait at a self-selected and fast walking speed, J Biomech., 40, 8, pp. 1754-1761, (2007); Landry S.C., McKean K.A., Stanish W.D., Deluzio K.J., Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated side-cut maneuver, Am J Sports Med., 35, 11, pp. 1888-1900, (2007); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A Comparison of Knee Joint Motion Patterns between Men and Women in Selected Athletic Tasks. Clin Biomech, 165, pp. 438-445, (2001); Malone T.R., Hardaker W.T., Garrett W.E., Feagin J.A., Bassett F.H., Relationship of gender to anterior cruciate ligament injuries in intercollegiate basketball players, J South Orthop Assoc, 2, 1, pp. 36-39, (1993); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res., 13, 6, pp. 930-935, (1995); McClay I., Manal K., Coupling parameters in runners with normal and excessive pronation, J Appl Biomech, 13, 1, pp. 109-124, (1997); McLean S.G., Huang X., Su A., Van Den Bogert A.J., Sagittal Plane Biomechanics Cannot Injure the ACL during Sidestep Cutting. Clin Biomech, 19, 8, pp. 828-838, (2004); Huang X., Van Den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clin Biomech, 20, 8, pp. 863-870, (2005); McLean S.G., Lipfert S.W., Van Den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc., 36, 6, pp. 1008-1016, (2004); Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: Potential for injury in women, Med Sci Sports Exerc., 31, 7, pp. 959-968, (1999); More R.C., Karras B.T., Neiman R., Fritschy D., Woo S.L., Daniel D.M., Hamstrings: An anterior cruciate ligament protagonist. An in vitro study, Am J Sports Med., 21, 2, pp. 231-237, (1993); Nigg B.M., Cole G.K., Nachbauer W., Effects of arch height of the foot on angular motion of the lower-extremities in running, J Biomech, 26, 8, pp. 909-916, (1993); Noyes F.R., Mooar P.A., Matthews D.S., Butler D.L., The symptomatic anterior cruciate-deficient knee, part I: The long-term functional disability in athletically active individuals, J Bone Joint Surg Am, 65, 2, pp. 154-162, (1983); O'Connor J.J., Can muscle co-contraction protect knee ligaments after injury or repair, J Bone Joint Surg Br., 75, 1, pp. 41-48, (1993); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med., 32, 4, pp. 1002-1012, (2004); Pollard C.D., Davis I.M., Hamill J., Influence of Gender on Hip and Knee Mechanics during a Randomly Cued Cutting Maneuver. Clin Biomech, 19, 10, pp. 1022-1031, (2004); Renstrom P., Arms S.W., Stanwyck T.S., Johnson R.J., Pope M.H., Strain within the anterior cruciate ligament during hamstring and quadriceps activity, Am J Sports Med., 14, 1, pp. 83-87, (1986); Rozzi S.L., Lephart S.M., Gear W.S., Fu F.H., Knee joint laxity and neuromuscular characteristics of male and female soccer and basketball players, Am J Sports Med., 27, 3, pp. 312-319, (1999); Sigward S.M., Powers C.M., The Influence of Gender on Knee Kinematics, Kinetics and Muscle Activation Patterns during Side-step Cutting. Clin Biomech, 21, 1, pp. 41-48, (2006); Solomonow M., Baratta R., Zhou B.H., The synergistic action of the anterior cruciate ligament and thigh muscles in maintaining joint stability, Am J Sports Med., 15, 3, pp. 207-213, (1987); Swartz E.E., Decoster L.C., Russell P.J., Croce R.V., Effects of developmental stage and sex on lower extremity kinematics and vertical ground reaction forces during landing, J Athl Train, 40, 1, pp. 9-14, (2005); Yu B., Chappell J.D., Garrett W.E., Responses to letters to the editor, Am J Sports Med., 34, pp. 312-315, (2006); Yu B., Kirkendall D.T., Garrett W.E., Anterior cruciate ligament injuries in female athletes: Anatomy, physiology, and motor control, Sports Med Arthrosc., 10, 1, pp. 58-68, (2002)","S.C. Landry; Dalhousie University, Halifax, NS B3H 3J5, 5981 University Avenue, Canada; email: landrys@dal.ca","","","15523365","","AJSMD","17761606","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-35649026864" "Sigward S.M.; Pollard C.D.; Havens K.L.; Powers C.M.","Sigward, Susan M. (9735729200); Pollard, Christine D. (7006671942); Havens, Kathryn L. (54581068700); Powers, Christopher M. (7103284208)","9735729200; 7006671942; 54581068700; 7103284208","Influence of sex and maturation on knee mechanics during side-step cutting","2012","Medicine and Science in Sports and Exercise","44","8","","1497","1503","6","46","10.1249/MSS.0b013e31824e8813","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863980384&doi=10.1249%2fMSS.0b013e31824e8813&partnerID=40&md5=d18393eb9bdd0062afd79bf5ba05ca43","Human Performance Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 90089, United States; Exercise and Sport Science Program, Department of Nutrition and Exercise Science, Oregon State University-Cascades, Bend, OR, United States; Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States","Sigward S.M., Human Performance Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 90089, United States; Pollard C.D., Exercise and Sport Science Program, Department of Nutrition and Exercise Science, Oregon State University-Cascades, Bend, OR, United States; Havens K.L., Human Performance Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 90089, United States; Powers C.M., Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States","Introduction: Females have been reported to have a three to five times greater incidence of noncontact anterior cruciate ligament injury when compared with their male counterparts. Previous research suggests that physical maturation is one factor that is associated with the development of potentially injurious lower extremity biomechanics in female athletes. Purpose: The study's purpose was to determine whether lower extremity biomechanics differ between male and female soccer athletes during a cutting maneuver across different stages of maturational development. Methods: One hundred fifty-six soccer players (76 males and 80 females) between the ages of 9 and 23 yr participated. Subjects were classified on the basis of maturation as prepubertal, pubertal, postpubertal, or young adult. Lower extremity kinematics, kinetics, and ground reaction forces (GRFs) were obtained during a 45° side-step cutting maneuver. Differences between sex and maturation were assessed for peak knee valgus angle, knee adductor moments, and GRFs (vertical, posterior, and lateral) during weight acceptance using a two-factor ANCOVA (controlling for approach velocity). Results: No sex × maturation interactions were found for any variable of interest. On average, females exhibited greater knee abduction and adductor moments than males. Prepubertal athletes demonstrated greater knee adductor moments and GRFs than all other groups. Conclusions: Biomechanical differences between males and females were evident across all stages of maturation. On average, less mature athletes exhibit biomechanical patterns during cutting that may place them at greater risk for injury than their more mature counterparts. © 2012 by the American College of Sports Medicine.","cutting; kinematics; kinetics; locomotor skills; Puberty","Adolescent; Adult; Anterior Cruciate Ligament; Biomechanics; Child; Female; Humans; Knee Injuries; Knee Joint; Male; Risk Factors; Sex Factors; Soccer; Young Adult; adolescent; adult; anterior cruciate ligament; article; biomechanics; child; female; human; injury; knee; knee injury; male; pathophysiology; physiology; risk factor; sex difference; soccer","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in National Collegiate Athletic Association basketball and soccer: A 13-year review, Am J Sports Med, 33, 4, pp. 524-531, (2005); Bale P., Mayhew J.L., Piper F.C., Ball T.E., Willman M.K., Biological and performance variables in relation to age in male and female adolescent athletes, J Sports Med Phys Fitness, 32, 2, pp. 142-148, (1992); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc, 33, 7, pp. 1168-1175, (2001); Beunen G., Malina R.M., Growth and physical performance relative to the timing of the adolescent spurt, Exerc Sport Sci Rev, 16, 1, pp. 503-540, (1988); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Bresler B., Frankel J., The forces and moments in the leg during level walking, Trans ASME, 72, pp. 27-36, (1950); Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am J Sports Med, 30, 2, pp. 261-267, (2002); Cochrane J.L., Lloyd D.G., Buttfield A., Seward H., McGivern J., Characteristics of anterior cruciate ligament injuries in Australian football, J Sci Med Sport, 10, 2, pp. 96-104, (2007); Davies P.L., Rose J.D., Motor skills of typically developing adolescents: Awkwardness or improvementi, Phys Occup Ther Pediatr, 20, 1, pp. 19-42, (2000); De Ste Croix M.B.A., Armstrong N., Welsman J.R., Sharpe P., Longitudinal changes in isokinetic leg strength in 10-14-year-olds, Ann Hum Biol, 29, 1, pp. 50-62, (2002); Ford K.R., Myer G.D., Hewett T.E., Longitudinal effects of maturation on lower extremity joint stiffness in adolescent athletes, Am J Sports Med, 38, 9, pp. 1829-1837, (2010); Garrett Jr. W.E., Swiontkowski M.F., Weinstein J.N., Et al., American Board of Orthopaedic Surgery Practice of the Orthopaedic Surgeon: Part-II, certification examination case mix, J Bone Joint Surg Am, 88, 3, pp. 660-667, (2006); Griffin L.Y., Albohm M.J., Arendt E.A., Et al., Understanding and preventing noncontact anterior cruciate ligament injuries: A review of the Hunt Valley II Meeting January 2005, Am J Sports Med., 34, 9, pp. 1512-1532, (2006); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, J Biomech Eng, 105, 2, pp. 136-144, (1983); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J Bone Joint Surg Am, 86 A, 8, pp. 1601-1608, (2004); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Jindrich D.L., Besier T.F., Lloyd D.G., A hypothesis for the function of braking forces during running turns, J Biomech, 39, 9, pp. 1611-1620, (2006); Jindrich D.L., Qiao M., Maneuvers during legged locomotion, Chaos, 19, 2, (2009); Leone M., Comtois A.S., Validity and reliability of self-assessment of sexual maturity in elite adolescent athletes, J Sports Med Phys Fitness, 47, 3, pp. 361-365, (2007); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech (Bristol, Avon), 16, 5, pp. 438-445, (2001); McLean S.G., Huang X., Van Den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clin Biomech (Bristol, Avon), 20, 8, pp. 863-870, (2005); McLean S.G., Lipfert S.W., Van Den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, 6, pp. 1008-1016, (2004); McNair P.J., Marshall R.N., Matheson J.A., Important features associated with acute anterior cruciate ligament injury, N Z Med J, 103, 901, pp. 537-539, (1990); Messina D.F., Farney W.C., Delee J.C., The incidence of injury in Texas high school basketball. 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Its relationship to performance in the young athlete, Clin Sports Med, 14, 3, pp. 483-502, (1995); Schlossberger N.M., Turner R.A., Irwin Jr. C.E., Validity of self-report of pubertal maturation in early adolescents, J Adolesc Health, 13, 2, pp. 109-113, (1992); Schmitz K.E., Hovell M.F., Nichols J.F., Et al., A validation study of early adolescents' pubertal self-assessments, J Early Adolesc, 24, 4, pp. 357-384, (2004); Shea K.G., Pfeiffer R., Wang J.H., Curtin M., Apel P.J., Anterior cruciate ligament injury in pediatric and adolescent soccer players: An analysis of insurance data, J Pediatr Orthop, 24, 6, pp. 623-628, (2004); Sigward S.M., Pollard C.D., Powers C.M., The influence of sex and maturation on landing biomechanics: Implications for anterior cruciate ligament injury, Scand J Med Sci Sports., (2011); Sigward S.M., Powers C.M., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clin Biomech (Bristol, Avon), 21, 1, pp. 41-48, (2006); Sigward S.M., Powers C.M., Loading characteristics of females exhibiting excessive valgus moments during cutting, Clin Biomech (Bristol, Avon), 22, 7, pp. 827-833, (2007); Tanner J.M., Whitehouse R.H., Clinical longitudinal standards for height, weight, height velocity, weight velocity, and stages of puberty, Arch Dis Child, 51, pp. 170-179, (1976); Taylor M.J.D., Cohen D., Voss C., Grh S., Vertical jumping and leg power normative data for English school children aged 10-15 years, J Sports Sci., 28, 8, pp. 867-872, (2010); Vallis L.A., McFadyen B.J., Children use different anticipatory control strategies than adults to circumvent an obstacle in the travel path, Exp Brain Res, 167, 1, pp. 119-127, (2005); Yu B., Garrett W.E., Mechanisms of non-contact ACL injuries, Br J Sports Med, 41, SUPPL. 1, (2007); Yu B., Lin C.F., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clin Biomech (Bristol, Avon), 21, 3, pp. 297-305, (2006); Yu B., McClure S.B., Onate J.A., Guskiewicz K.M., Kirkendall D.T., Garrett W.E., Age and gender effects on lower extremity kinematics of youth soccer players in a stop-jump task, Am J Sports Med, 33, 9, pp. 1356-1364, (2005)","S.M. Sigward; Human Performance Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 90089, United States; email: sigward@usc.edu","","","15300315","","MSCSB","22330027","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-84863980384" "Nichols J.F.; Rauh M.J.; Barrack M.T.; Barkai H.-S.","Nichols, Jeanne F. (7201485939); Rauh, Mitchell J. (7004242306); Barrack, Michelle T. (9743862000); Barkai, Hava-Shoshana (58707620300)","7201485939; 7004242306; 9743862000; 58707620300","Bone mineral density in female high school athletes: Interactions of menstrual function and type of mechanical loading","2007","Bone","41","3","","371","377","6","63","10.1016/j.bone.2007.05.003","https://www.scopus.com/inward/record.uri?eid=2-s2.0-34547579346&doi=10.1016%2fj.bone.2007.05.003&partnerID=40&md5=b3978ac9e18ff67d5a4de4ef9d9a7bd6","School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA 92182-7251, United States; Graduate Program in Orthopaedic and Sports Physical Therapy, Rocky Mountain University of Health Professions, UT 84601, United States; Department of Nutrition, Graduate Group in Nutritional Biology, University of California, Davis, CA 95616, United States","Nichols J.F., School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA 92182-7251, United States; Rauh M.J., School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA 92182-7251, United States, Graduate Program in Orthopaedic and Sports Physical Therapy, Rocky Mountain University of Health Professions, UT 84601, United States; Barrack M.T., School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA 92182-7251, United States, Department of Nutrition, Graduate Group in Nutritional Biology, University of California, Davis, CA 95616, United States; Barkai H.-S., School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA 92182-7251, United States","During adolescence, skeletal integrity of girls is largely dependent on menstrual function and impact exercise, yet currently there is limited research regarding the interaction between menstrual status and type of mechanical loading associated with various high school sports. Our purpose was to examine associations of menstrual status, type of mechanical loading, and bone mineral density (BMD) in female high school athletes participating in high/odd impact or repetitive/non-impact sport. Participants were 161 female high school athletes (15.7 ± 1.3 years; 165.3 ± 6.9 cm; 59.4 ± 8.7 kg) representing high/odd impact (n = 93, including soccer, softball, volleyball, tennis, lacrosse, and track sprinters and jumpers), or repetitive/non-impact sports (n = 68, including swimmers, cross-country and track distance runners who participated in events ≥ 800 m). Areal BMD was measured by DXA at the spine (L1-L4), proximal femur, and total body. Menstrual status was determined by self-report. Athletes with primary, secondary or oligomenorrhea were combined into a single group (oligo/amenorrheic) and compared to eumenorrheic athletes. Analysis of covariance (ANCOVA) with Bonferroni post hoc comparisons adjusted for age, BMI, and gynecological age were used to compare BMD of athletes in combined mechanical loading and menstrual status groups. We found significantly greater total hip (p = 0.04) and trochanter (p = 0.02) BMD (g cm- 2) among eumenorrheic high/odd impact compared to eumenorrheic repetitive/non-impact athletes, and greater spine (p = 0.01) and trochanter (p = 0.04) BMD among high/odd impact eumenorrheic athletes compared to repetitive/non-impact oligo/amenorrheic athletes. Chi-squared analysis of BMD Z-scores adjusted for gynecological age showed a significantly greater percentage of repetitive/non-impact athletes (33.9%) compared to high/odd impact athletes (11.8%) with low spine BMD for their age (BMD Z-score ≤ - 1 SD) (p = 0.001), indicating that a high percentage of female high school athletes participating in repetitive loading sports, and especially those with oligo/amenorrhea, may not be accruing bone at the expected rate. Female adolescent athletes should be evaluated periodically and advised of the possible negative effects of oligo/amenorrhea on bone health. © 2007 Elsevier Inc. All rights reserved.","Adolescents; Amenorrhea; Bone mass; Impact sports; Menstrual dysfunction","Adolescent; Biomechanics; Bone Density; Densitometry, X-Ray; Female; Humans; Menstruation; Menstruation Disturbances; Sports; Weight-Bearing; adolescence; adolescent; age distribution; amenorrhea; analysis of covariance; article; athlete; baseball; biomechanics; body distribution; body mass; bone age; bone density; chi square test; comparative study; controlled study; dual energy X ray absorptiometry; exercise; female; femur; gynecological examination; high school; high school student; hip; human; human experiment; lumbar spine; menstruation; normal human; post hoc analysis; running; self report; sport; statistical significance; swimming; tennis; volleyball","Mackelvie K.J., McKay H.A., Khan K.M., Crocker P.R., A school-based exercise intervention augments bone mineral accrual in early pubertal girls, J. Pediatr., 139, pp. 501-508, (2001); Greene D.A., Naughton G.A., Adaptive skeletal responses to mechanical loading during adolescence, Sports Med., 36, pp. 723-732, (2006); Wallace L.S., Ballard J., Lifetime physical activity and calcium intake related to bone density in young women, J. Women's Health Gend.-Based Med., 11, pp. 389-398, (2002); Kannus P., Haapasalo H., Sankelo M., Sievanen H., Pasanen M., Heinonen A., Et al., Effect of starting age of physical activity on bone mass in the dominant arm of tennis and squash players, Ann. Intern. Med., 123, pp. 27-31, (1995); Mackelvie K.J., McKay H.A., Khan K.M., Crocker P.R., Lifestyle risk factors for osteoporosis in Asian and Caucasian girls, Med. Sci. Sports Exerc., 33, pp. 1818-1824, (2001); McKay H.A., Petit M.A., Schutz R.W., Prior J.C., Barr S.I., Khan K.M., Augmented trochanteric bone mineral density after modified physical education classes: a randomized school-based exercise intervention study in prepubescent and early pubescent children, J. Pediatr., 136, pp. 156-162, (2000); Fehling P.C., Alekel L., Clasey J., Rector A., Stillman R.J., A comparison of bone mineral densities among female athletes in impact loading and active loading sports, Bone, 17, pp. 205-210, (1995); Taaffe D.R., Robinson T.L., Snow C.M., Marcus R., High-impact exercise promotes bone gain in well-trained female athletes, J. Bone Miner. Res., 12, pp. 255-260, (1997); Robling A.G., Hinant F.M., Burr D.B., Turner C.H., Shorter, more frequent mechanical loading sessions enhance bone mass, Med. Sci. Sports Exerc., 34, pp. 196-202, (2002); Nikander R., Sievanen H., Heinonen A., Kannus P., Femoral neck structure in adult female athletes subjected to different loading modalities, J. Bone Miner. Res., 20, pp. 520-528, (2005); Egan E., Reilly T., Giacomoni M., Redmond L., Turner C., Bone mineral density among female sports participants, Bone, 38, pp. 227-233, (2006); Nattiv A., Agostini R., Drinkwater B., Yeager K.K., The female athlete triad. The inter-relatedness of disordered eating, amenorrhea, and osteoporosis, Clin. Sports Med., 13, pp. 405-418, (1994); De Souza M.J., Williams N.I., Beyond hypoestrogenism in amenorrheic athletes: energy deficiency as a contributing factor for bone loss, Curr. Sports Med. Rep., 4, pp. 38-44, (2005); Pettersson U., Stalnacke B., Ahlenius G., Henriksson-Larsen K., Lorentzon R., Low bone mass density at multiple skeletal sites, including the appendicular skeleton in amenorrheic runners, Calcif. Tissue Int., 64, pp. 117-125, (1999); Torstveit M.K., Sundgot-Borgen J., The female athlete triad exists in both elite athletes and controls, Med. Sci. Sports Exerc., 37, pp. 1449-1459, (2005); Beals K.A., Manore M.M., Disorders of the female athlete triad among collegiate athletes, Int. J. Sport Nutr. Exerc. Metab., 12, pp. 281-293, (2002); Torstveit M.K., Sundgot-Borgen J., Participation in leanness sports but not training volume is associated with menstrual dysfunction: a national survey of 1276 elite athletes and controls, Br. J. Sports Med., 39, pp. 141-147, (2005); Nichols J.F., Rauh M.J., Lawson M.L., Ji M., Barkai H.S., Prevalence of the female athlete triad syndrome among high school athletes, Arch. Pediatr. Adolesc. Med., 160, pp. 137-142, (2006); International Society for Clinical Densitometry, Diagnosis of osteoporosis in men, premenopausal women, and children, J. Clin. Densitom., 7, pp. 17-26, (2004); Wacker W., Braden H.S., Pediatric reference data for male and female total body and spine BMD and BMC, (2001); Van de Loo D.A., Johnson M.D., The young female athlete, Clin. Sports Med., 14, pp. 687-707, (1995); American Academy of Pediatrics, Committee on Sports Medicine and Fitness. Medical concerns in the female athlete, Pediatrics, 106, pp. 610-613, (2000); American Academy of Pediatrics, Committee on Adolescence; American College of Obstetricians and Gynecologists and Committee on Adolescent Health Care. Menstruation in girls and adolescents: using the menstrual cycle as a vital sign, Pediatrics, 118, pp. 2245-2250, (2006); Harel Z., Gold M., Cromer B., Bruner A., Stager M., Bachrach L., Et al., Bone mineral density in postmenarchal adolescent girls in the United States: associated biopsychosocial variables and bone turnover markers, J. Adolesc. Health, 40, pp. 44-53, (2007); Cobb K.L., Bachrach L.K., Greendale G., Marcus R., Neer R.M., Nieves J., Et al., Disordered eating, menstrual irregularity, and bone mineral density in female runners, Med. Sci. Sports Exerc., 35, pp. 711-719, (2003); Heaney R.P., Abrams S., Dawson-Hughes B., Looker A., Marcus R., Matkovic V., Et al., Peak bone mass, Osteoporos. Int., 11, pp. 985-1009, (2000); Rencken M.L., Chesnut III C.H., Drinkwater B.L., Bone density at multiple skeletal sites in amenorrheic athletes, JAMA, 276, pp. 238-240, (1996); Drinkwater B.L., Bruemner B., Chesnut III C.H., Menstrual history as a determinant of current bone density in young athletes, JAMA, 263, pp. 545-548, (1990); Miller K.K., Klibanski A., Clinical review 106: amenorrheic bone loss, J. Clin. Endocrinol. Metab., 84, pp. 1775-1783, (1999); Weaver C.M., Adolescence: the period of dramatic bone growth, Endocrine, 17, pp. 43-48, (2002); Drinkwater B.L., Nilson K., Chesnut III C.H., Bremner W.J., Shainholtz S., Southworth M.B., Bone mineral content of amenorrheic and eumenorrheic athletes, N. Engl. J. Med., 311, pp. 277-281, (1984); Torstveit M.K., Sundgot-Borgen J., The female athlete triad: are elite athletes at increased risk?, Med. Sci. Sports Exerc., 37, pp. 184-193, (2005); Gibson J.H., Mitchell A., Harries M.G., Reeve J., Nutritional and exercise-related determinants of bone density in elite female runners, Osteoporos. Int., 15, pp. 611-618, (2004); Proctor K.L., Adams W.C., Shaffrath J.D., Van Loan M.D., Upper-limb bone mineral density of female collegiate gymnasts versus controls, Med. Sci. Sports. Exerc., 34, pp. 1830-1835, (2002); McLean J.A., Barr S.I., Prior J.C., Dietary restraint, exercise, and bone density in young women: are they related?, Med. Sci. Sports Exerc., 33, pp. 1292-1296, (2001); Van Loan M.D., Keim N.L., Influence of cognitive eating restraint on total-body measurements of bone mineral density and bone mineral content in premenopausal women aged 18-45 y: a cross-sectional study, Am. J. Clin. Nutr., 72, pp. 837-843, (2000); Ihle R., Loucks A.B., Dose-response relationships between energy availability and bone turnover in young exercising women, J. Bone Miner. Res., 19, pp. 1231-1240, (2004); World Health Organization, Longitudinal study of menstrual patterns in the early postmenarcheal period, duration of bleeding episodes and menstrual cycles, J. Adolesc. Health Care, 7, pp. 236-244, (1986)","J.F. Nichols; School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA 92182-7251, United States; email: jeannebernhard@cox.net","","","87563282","","BONED","17572167","English","Bone","Article","Final","","Scopus","2-s2.0-34547579346" "Jones P.A.; Herrington L.C.; Munro A.G.; Graham-Smith P.","Jones, Paul A. (55308526600); Herrington, Lee C. (7004230643); Munro, Allan G. (36194098300); Graham-Smith, Philip (23992390400)","55308526600; 7004230643; 36194098300; 23992390400","Is there a relationship between landing, cutting, and pivoting tasks in terms of the characteristics of dynamic valgus?","2014","American Journal of Sports Medicine","42","9","","2095","2102","7","46","10.1177/0363546514539446","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84907200747&doi=10.1177%2f0363546514539446&partnerID=40&md5=2aadbeae226940df5f843aba2156028b","Directorate of Sport, Exercise and Physiotherapy, University of Salford, Frederick Road, Salford, M6 6PU, United Kingdom; School of Health Studies, University of Bradford, Bradford, United Kingdom; Aspire Academy, Doha, Qatar","Jones P.A., Directorate of Sport, Exercise and Physiotherapy, University of Salford, Frederick Road, Salford, M6 6PU, United Kingdom; Herrington L.C., Directorate of Sport, Exercise and Physiotherapy, University of Salford, Frederick Road, Salford, M6 6PU, United Kingdom; Munro A.G., Directorate of Sport, Exercise and Physiotherapy, University of Salford, Frederick Road, Salford, M6 6PU, United Kingdom, School of Health Studies, University of Bradford, Bradford, United Kingdom; Graham-Smith P., Directorate of Sport, Exercise and Physiotherapy, University of Salford, Frederick Road, Salford, M6 6PU, United Kingdom, Aspire Academy, Doha, Qatar","Background: Anterior cruciate ligament (ACL) injuries are a major problem among female athletes. Screening for the risk of ACL injuries tends to focus on landing tasks, which may be limited in sports where changing direction is the main action involved in noncontact ACL injuries such as soccer. Purpose: To investigate whether there is a relationship between single-legged landing (SLL), cutting (90- cuts), and pivoting (180- turns) in terms of the characteristics of dynamic valgus. Study Design: Controlled laboratory study. Methods: Twenty female soccer players (mean ± SD: age, 21.0 6 3.9 years; height, 1.65 6 0.08 m; mass, 58.4 6 6.4 kg) performed a minimum of 6 trials of SLL from a 0.3-m drop height and cutting and pivoting all on the right leg. Kinematics and kinetics were calculated from 3-dimensional motion analysis. Results: Strong correlations were found for peak knee abduction angles between tasks (R = 0.63-0.86, P\.01), whereas only moderate correlations between SLL and cutting (R = 0.46, P\.05), cutting and pivoting (R = 0.56, P\.05), and SLL and pivoting (R = 0.43, P . .05) were found between tasks for peak knee abduction moments. Conclusion: The results suggest that female athletes who exhibit poor SLL mechanics perform the same during various changing direction tasks. Clinical Relevance: The results support the use of existing screening tests that involve landing tasks to identify at-risk athletes for noncontact ACL injuries. © 2014 The Author(s).","anterior cruciate ligament injury; cutting; pivoting; preparticipation screening","Anterior Cruciate Ligament; Biomechanical Phenomena; Female; Humans; Knee Joint; Movement; Risk Factors; Sex Factors; Soccer; Young Adult; anterior cruciate ligament injury; cutting; pivoting; preparticipation screening; anterior cruciate ligament; anterior cruciate ligament injury; article; biomechanics; cutting; female; human; injury; knee; movement (physiology); physiology; pivoting; preparticipation screening; risk factor; sex difference; soccer; young adult","Angeloni C., Cappozzo A., Catani F., Leardini A., Quantification of relative displacement of skin- and plate-mounted markers with respect to bones, J Biomech, 26, (1993); Beaulieu M.L., Lamontagne M., Xu L., Lower limb muscle activity and kinematics of an unanticipated cutting maneuver: A gender comparison, Knee Surg Sports Traumatol Arthrosc, 17, pp. 968-976, (2009); 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Dempsey A.R., Lloyd D.G., Elliot B.C., Steele J.R., Munro B.J., Russo K.A., The effect of technique change on knee loads during sidestep cutting, Med Sci Sports Exerc, 39, pp. 1765-1773, (2007); Dempster W.T., Space Requirements of the Seated Operator: Geometrical, Kinematic, and Mechanical Aspects of the Body with Special Reference to the Limbs, (1955); Faude O., Junge A., Kindermann W., Dvorak J., Injuries in female soccer players: A prospective study in the German national league, Am J Sports Med, 33, pp. 1694-1700, (2005); Fedie R., Carlstedt K., Willson J.D., Kernozek T.W., Effect of attending to a ball during a side-cut maneuver on lower extremity biomechanics in male and female athletes, Sports Biomech, 9, pp. 165-177, (2010); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, pp. 1745-1750, (2003); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Med Sci Sports Exerc, 37, pp. 124-129, (2005); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three dimensional motions: Application to the knee, J Biomech Eng, 105, pp. 136-144, (1983); Harty C.M., Dupont C.E., Chmielewski T.L., Mizner R.L., Intertask comparison of frontal plane knee position and moment in female athletes during three distinct movement tasks, Scand J Med Sci Sports, 21, pp. 98-105, (2011); Hewett T.E., Myer G.D., Ford K.R., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes, Am J Sports Med, 33, pp. 492-501, (2005); Kristianlund E., Krosshaug T., Comparison of drop jumps and sport-specific sidestep cutting, Am J Sports Med, 41, pp. 684-688, (2013); Krosshaug T., Nakamae A., Boden B.P., Mechanisms of anterior cruciate ligament injury in basketball, Am J Sports Med, 35, pp. 359-367, (2007); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletics tasks, Clin Biomech, 16, pp. 438-445, (2001); Manal K., McClay I., Stanhope S., Richards J., Galinat B., Comparison of surface mounted markers and attachment methods is estimating tibial rotations during walking: An in vivo study, Gait Posture, 11, pp. 38-45, (2000); McLean S.G., Huang X., Van Den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clin Biomech, 20, pp. 863-870, (2005); McLean S.G., Lipfert S.W., Van Den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, pp. 1008-1016, (2004); McLean S.G., Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: Potential for injury in women, Med Sci Sports Exerc, 31, pp. 959-968, (1999); McLean S.G., Walker K., Ford K.R., Myer G.D., Hewett T.E., Van Den Bogert A.J., Evaluation of a two-dimensional analysis method as a screening and evaluation tool for anterior cruciate ligament injury, Br J Sports Med, 39, pp. 355-362, (2005); McLean S.G., Walker K.B., Van Den Bogert A.J., Effect of gender on lower extremity kinematics during rapid direction changes: An integrated analysis of three sports movements, J Sci Med Sport, 8, pp. 411-422, (2005); Noyes F.R., Barber-Westin S.D., Fleckenstein C., Walsh C., West J., The drop-jump screening test: Differences in lower limb control by gender and effect of neuromuscular training in female athletes, Am J Sports Med, 33, pp. 197-207, (2005); O'Connor K.M., Monteiro S.K., Hoelker I.A., Comparison of selected lateral cutting activities used to assess ACL injury risk, J Appl Biomech, 25, pp. 9-21, (2009); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med, 32, pp. 1002-1012, (2004); Padua D.A., Marshall S.W., Boling M.C., Thigpen C.A., Garrett W.E., Beutler A.I., The landing error scoring system (LESS) is a valid and reliable clinical assessment tool of jump-landing biomechanics, Am J Sports Med, 37, pp. 1996-2002, (2009); Pappas E., Sheikhzadeh A., Hagins M., Nordin M., The effect of gender and fatigue on the biomechanics of bilateral landings from a jump: Peak values, J Sports Sci Med, 6, pp. 77-84, (2007); Pollard C.D., McClay Davis I., Hamill J., Influence of gender on hip and knee mechanics during a randomly cued cutting maneuver, Clin Biomech, 19, pp. 1022-1031, (2004); Salci Y., Kentel B.B., Heycan C., Akin S., Korkusuz F., Comparison of landing maneuvers between male and female college volleyball players, Clin Biomech, 19, pp. 622-628, (2004); Sigward S.M., Powers C.M., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clin Biomech, 21, pp. 41-48, (2006); Sigward S.M., Powers C.M., Loading characteristics of females exhibiting excessive valgus moments during cutting, Clin Biomech, 22, pp. 827-833, (2007); Smith H.C., Johnson R.J., Shultz S.J., A prospective evaluation of the landing error scoring system (LESS) as a screening tool for anterior cruciate ligament injury risk, Am J Sports Med, 40, pp. 521-526, (2012); Whatman C., Hing W., Hume P., Kinematics during lower extremity functional screening tests: Are they reliable and related to jogging?, Phys Ther Sport, 12, pp. 22-29, (2011); Willson J.D., Davis I.S., Utility of the frontal plane projection angle in females with patellofemoral pain, J Orthop Sports Phys Ther, 38, pp. 606-615, (2008); Winter D.A., Biomechanics and Motor Control of Human Movement, (1990); Yeadon M.R., Kato T., Kerwin D.G., Measuring running speed using photocells, J Sports Sci, 17, pp. 249-257, (1999); Zazulak B.T., Ponce P.L., Straub S.J., Medvecky M.J., Avedisian L., Hewett T.E., Gender comparison of hip muscle activity during single-leg landing, J Orthop Sports Phys Ther, 35, pp. 292-299, (2005)","","","SAGE Publications Inc.","03635465","","AJSMD","25005852","English","Am. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84907200747" "Watson A.W.S.","Watson, A.W.S. (57217549353)","57217549353","Sports injuries in footballers related to defects of posture and body mechanics","1995","Journal of Sports Medicine and Physical Fitness","35","4","","289","294","5","46","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0029551061&partnerID=40&md5=1dfeb2ca8f471d99ebe77cad69e2d87b","Sport Injuries Research Centre, University of Limerick, Limerick, Ireland","Watson A.W.S., Sport Injuries Research Centre, University of Limerick, Limerick, Ireland","The objective of this study was to investigate possible relationships between the incidence of sports injury and the existence of body mechanics defects in players of various codes of football. Injuries were recorded prospectively over a 24 month period. Fifteen aspects of body mechanics were evaluated at the start of the study using a specially developed photogrammetric technique known to have high reliability and sensitivity. It was found that subjects who suffered from ankle injuries had lower mean scores for ankle mechanics than the non-injured players. Knee injuries were found to be associated with lumbar lordosis and sway back. Subjects who suffered from muscle strains had a higher incidence of lumbar lordosis, sway back and abnormal knee inter-space. Back injuries were associated with poor shoulder symmetry, scapulae abduction, back asymmetry, kyphosis, lordosis and scoliosis. Subjects who suffered from two or more injuries had lower overall body mechanics scores than the other subjects. In general, it was found that the incidence of ankle, back, knee and muscle injuries was influenced by the presence of defects of body mechanics. These results suggest that intervention to improve body mechanics would be likely to reduce the incidence of sports injuries in football.","body mechanics; football; gaelic football; posture; rugby; soccer; sports injuries","Adolescent; Adult; Ankle Injuries; Athletic Injuries; Back Injuries; Biomechanics; Humans; Knee Injuries; Male; Muscle, Skeletal; Posture; Prospective Studies; Soccer; Somatotypes; adult; ankle injury; article; body posture; football; human; human experiment; incidence; knee injury; male; mechanics; muscle disease; rugby; spine disease; sport; sport injury","","","","","00224707","","JMPFA","8776077","English","J. SPORTS MED. PHYS. FITNESS","Article","Final","","Scopus","2-s2.0-0029551061" "Mccurdy K.W.; Walker J.L.; Langford G.A.; Kutz M.R.; Guerrero J.M.; Mcmillan J.","Mccurdy, Kevin W. (8317722200); Walker, John L. (7405586611); Langford, George A. (8317721800); Kutz, Matt R. (24724441600); Guerrero, James M. (37050724900); Mcmillan, Jeremy (37051079400)","8317722200; 7405586611; 8317721800; 24724441600; 37050724900; 37051079400","The relationship between kinematic determinants of jump and sprint performance in division i women soccer players","2010","Journal of Strength and Conditioning Research","24","12","","3200","3208","8","48","10.1519/JSC.0b013e3181fb3f94","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79953001221&doi=10.1519%2fJSC.0b013e3181fb3f94&partnerID=40&md5=5a26e97d9f0d8f297e83ceb3998ac760","Department of Health and Human Performance, Biomechanics Lab, Texas State University, San Marcos, TX, United States; Department of Kinesiology and Physical Education, Human Performance Lab, Valdosta State University, Valdosta, GA, United States; School of Human Movement Sport, and Leisure Studies, Bowling Green State University, Bowling Green, OH, United States","Mccurdy K.W., Department of Health and Human Performance, Biomechanics Lab, Texas State University, San Marcos, TX, United States; Walker J.L., Department of Kinesiology and Physical Education, Human Performance Lab, Valdosta State University, Valdosta, GA, United States; Langford G.A., School of Human Movement Sport, and Leisure Studies, Bowling Green State University, Bowling Green, OH, United States; Kutz M.R., Department of Health and Human Performance, Biomechanics Lab, Texas State University, San Marcos, TX, United States; Guerrero J.M., Department of Health and Human Performance, Biomechanics Lab, Texas State University, San Marcos, TX, United States; Mcmillan J., Department of Health and Human Performance, Biomechanics Lab, Texas State University, San Marcos, TX, United States","The purpose of this study was to determine the relationship between measures of unilateral and bilateral jumping performance and 10- and 25-m sprint performance. Fifteen division I women soccer players (height 165 ± 2.44cm, mass 61.65 ± 7.7 kg, age 20.19±0.91 years) volunteered to participate in this study. The subjects completed a 10- and 25- m sprint test. The following jump kinematic variables were measured using accelerometry: sprint time, step length, step frequency, jump height and distance, contact time, concentric contact time, and flight time (Inform Sport Training Systems, Victoria, BC, Canada). The following jumps were completed in random order: bilateral countermovement vertical jump, bilateral countermovement horizontal jump, bilateral 40-cm drop vertical jump, bilateral 40-cm drop horizontal jump, unilateral countermovement vertical jump (UCV), unilateral countermovement horizontal jump, unilateral 20-cm drop vertical jump (UDV), and unilateral 20-cm drop horizontal jump (UDH). The trial with the best jump height or distance, reactive strength (jump height or distance/total contact time), and flight time to concentric contact time ratio (FT/CCT) was recorded to analyze the relationship between jump kinematics and sprint performance. None of the bilateral jump kinematics significantly correlated with 10- and 25-m sprint time, step length, or step frequency. Right-leg jump height (r =-0.71, p=0.006, SEE = 0.152 seconds), FT/CCT (r = 20.58, p = 0.04, SEE = 0.176 seconds), and combined right and left-leg jump height (r = -0.61) were significantly correlated with the 25-m sprint time during the UCV. Right-leg FT/CCT was also significantly related to 25-m step length (r = 0.68, p = 0.03, SEE = 0.06 m)during the UDV. The combined right and left leg jump distance to standing height ratio during the UDH significantly correlated (r = -0.58) with 10-m sprint time. In comparison to bilateral jumps, unilateral jumps produced a stronger relationship with sprint performance. © 2010 National Strength and Conditioning Association.","Bilateral jump; Horizontal jump; Reactive strength; Unilateral jump; Vertical jump","Acceleration; Athletic Performance; Biomechanics; Female; Humans; Leg; Movement; Running; Soccer; Young Adult; acceleration; adult; article; athletic performance; biomechanics; female; human; leg; movement (physiology); physiology; running; sport","Arteaga R., Dorado C., Chavarren J., Calbet J., Reliability of jumping performance in active men and women under different stretch loading conditions, J Sports Med Phys Fitness, 40, pp. 26-30, (2000); Baker D., Nance S., The relation between running speed and measures of strength and power in professional rugby players, J Strength Cond Res, 13, pp. 230-235, (1999); Blackburn J.T., Riemann B.L., Padua D.A., Guskiewicz K.M., Sex comparison of extensibility, passive, and active stiffness of the knee flexors, Clinical Biomechanics, 19, 1, pp. 36-43, (2004); Booher L.D., Hench K.M., Worrell T.W., Stikeleather J., Reliability of three single-leg hop tests, Journal of Sport Rehabilitation, 2, 3, pp. 165-170, (1993); Chamari K., Hachana Y., Ahmed Y.B., Galy O., Sghaier F., Chatard J.-C., Hue O., Wisloff U., Field and laboratory testing in young elite soccer players, British Journal of Sports Medicine, 38, 2, pp. 191-196, (2004); Souhaiel M.C., Denis C., Leg power and hopping stiffness: Relationship with sprint running performance, Medicine and Science in Sports and Exercise, 33, 2, pp. 326-333, (2001); Flanagan E., Ebben W., Jensen R., Reliability of the reactive strength index and time to stabilization during depth jumps, J Strength Cond Res, 22, pp. 1677-1682, (2008); Flanagan E., Harrison A., Muscle dynamics differences between legs in healthy adults, J Strength Cond Res, 21, pp. 67-72, (2007); Hennessy L., Kilty J., Relationship of the Stretch-Shortening Cycle to Sprint Performance in Trained Female Athletes, Journal of Strength and Conditioning Research, 15, 3, pp. 326-331, (2001); Hobara H., Kimura K., Omuro K., Gomi K., Muraoka T., Iso S., Kanosue K., Determinants of difference in leg stiffness between endurance- and power-trained athletes, J Biomech, 41, pp. 506-514, (2008); Holm D., Stalbom M., Keogh J., Cronin J., Relationship between the kinetics and kinematics of a unilateral horizontal drop jump to sprint performance, J Strength Cond Res, 22, pp. 1589-1596; Hunter J.P., Marshall R.N., McNair P.J., Interaction of Step Length and Step Rate during Sprint Running, Medicine and Science in Sports and Exercise, 36, 2, pp. 261-271, (2004); Kale M., Asci A., Bayrak C., Acikada C., Relationships among jumping performances and sprint parameters during maximum speed phase in sprinters, J Strength Cond Res, 23, pp. 2272-2279, (2009); Kuitunen S., Komi P.V., Kyrolainen H., Knee and ankle joint stiffness in sprint running, Medicine and Science in Sports and Exercise, 34, 1, pp. 166-173, (2002); Kukolj M., Ropret R., Ugarkovic D., Jaric S., Anthropometric, strength, and power predictors of sprinting performance, Journal of Sports Medicine and Physical Fitness, 39, 2, pp. 120-122, (1999); Liebermann D.G., Katz L., On the assessment of lower-limb muscular power capability, Isokinetics and Exercise Science, 11, 2, pp. 87-94, (2003); Maulder P., Bradshaw E., Keogh J., Jump kinetic determinants of sprint acceleration performance from starting blocks in male sprinters, J Sports Sci Med, 5, pp. 359-366, (2006); Maulder P., Cronin J., Horizontal and vertical jump assessment: Reliability, symmetry, discriminative and predictive ability, Physical Therapy in Sport, 6, 2, pp. 74-82, (2005); Mero A., Force-time characteristics and running velocity of male sprinters during the acceleration phase of sprinting, Res Q Exerc Sport, 59, pp. 94-98, (1988); Meylan C., McMaster T., Cronin J., Mohammad N., Rogers C., DeKlerk M., Single-leg lateral, horizontal, and vertical jump assessment: Reliability, interrelationships, and ability to predict sprint and change-of-direction performance, J Strength Cond Res, 23, pp. 1140-1147; Moir G., Shastri P., Connaboy C., Intersession reliability of vertical jump height in women and men, J Strength Cond Res, 22, pp. 1779-1784, (2008); 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Stalbom M., Holm D., Cronin J., Keogh J., Reliability of kinematics and kinetics associated with horizontal single leg drop jump assessment. A brief report, J Sports Sci Med, 6, pp. 261-264, (2007); Viitasalo J.T., Luhtanen P., Mononen H.V., Norvapalo K., Paavolainen L., Salonen M., Photocell contact mat: A new instrument to measure contact and flight times in running, Journal of Applied Biomechanics, 13, 2, pp. 254-266, (1997); Wilson J., Flanagan E., The role of elastic energy in activities with high force and power requirements: A brief review, J Strength Cond Res, 22, pp. 1705-1715, (2008); Young W., Hawken M., McDonald L., Relationship between speed, agility, and strength qualities in Australian Rules football, Strength Cond Coach, 4, pp. 3-6, (1996); Young W., McClean B., Ardagna J., Relationship between strength qualities and sprinting performance, J Sports Med Phys Fitness, 35, pp. 13-19, (1995)","K. W. Mccurdy; Department of Health and Human Performance, Biomechanics Lab, Texas State University, San Marcos, TX, United States; email: km55@txstate.edu","","","10648011","","","21068677","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-79953001221" "Barfield W.R.","Barfield, W.R. (7006508917)","7006508917","The biomechanics of kicking in soccer","1998","Clinics in Sports Medicine","17","4","","711","728","17","47","10.1016/S0278-5919(05)70113-7","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0031712962&doi=10.1016%2fS0278-5919%2805%2970113-7&partnerID=40&md5=ad2dfef10418bd133a6dca7c3785557c","Department of Orthopaedic Surgery, Medical University of South Carolina, Charleston, SC 29425, 171 Ashley Avenue, United States","Barfield W.R., Department of Orthopaedic Surgery, Medical University of South Carolina, Charleston, SC 29425, 171 Ashley Avenue, United States","This article discusses the basics of kicking skill from development stages through mechanical characteristics of upper level players. Specific areas that are addressed include developmental levels, kicking components, approach angle, forces on the support foot, loading of the swing limb and subsequent movement toward ball contact, and the mechanics of ball contact and follow-through.","","athlete; back; biomechanics; foot; force; hip; human; knee function; leg movement; motor coordination; motor performance; review; sport; training; weight bearing","Abo-Abdo H.E., (1981); Aitchison I., Lees A., Et al., A biomechanical analysis of place-kicking in rugby union, pp. 1-7, (1983); Anderson D.I., Sidaway B., Coordination changes associated with practice of a soccer kick, Res Q Exerc Sport, 65, pp. 93-98, (1994); Asami T., Nolte V., Analysis of powerful ball kicking, pp. 695-700, (1983); Barfield W.R., (1993); Barfield W.R., Effects of selected kinematic and kinetic variables on instep kicking with dominant and nondominant limbs, Journal of Human Movement Studies, 29, pp. 251-272, (1995); Barfield W.R., Biomechanics of kicking, pp. 86-94, (1997); Bernstein N., (1967); Bloomfield J., Elliott B., Davies C., Development of the soccer kick: A cinematographical analysis, Journal of Human Movement Studies, 3, pp. 152-159, (1979); Bollens E.C., DeProft E., Clarys J.P., The accuracy and muscle monitoring in soccer kicking, pp. 283-288, (1987); Brady E.C., O'Regan M., McCormack B., Isokinetic assessment of uninjured soccer players, pp. 351-356, (1993); Burnie J., Brodie D.A., Isokinetic measurement in preadolescent males, Int J Sports Med, 7, pp. 205-209, (1986); Butterfield S.A., Loovis E.M., Influence of age, sex, balance, and sport participation on development of kicking by children in grades K-8, Percept Mot Skills, 79, pp. 691-697, (1994); Cabri J., DeProft E., Dufour W., Et al., The relation between muscular strength an kick performance, pp. 186-193, (1988); Capranica L., Cama G., Fanton F., Et al., Force and power of preferred and non-preferred leg in young soccer players, J Sports Med Phys Fitness, 32, pp. 358-363, (1992); Chyzowych W., (1979); Clarys J.P., Cabri J., Electromyography and study of sports movement: A review, J Sports Sci, 11, pp. 379-448, (1993); DeProft E., Cabri J., Dufour W., Et al., Strength training and kick performance in soccer players, pp. 108-113, (1988); DeProft E., Clarys J.P., Bollens E., Et al., Muscle activity in the soccer kick, pp. 434-440, (1988); Dos Anjos L.A., Adrian M.J., Ground reaction forces during soccer kicks performed by skilled and unskilled subjects, (1986); Dunn E.G., Putnam C.A., Et al., The influence of lower leg motion on thigh deceleration in kicking, pp. 787-790, (1988); Elliott B.C., Bloomfield J., Davies C.M., Development of the punt kick: A cinematographical analysis, Journal of Human Movement Studies, 6, pp. 142-150, (1980); Gainor B.J., Piotrowski G., Puhl J.J., Et al., The kick: Biomechanics and collision injury, Am J Sports Med, 6, pp. 185-193, (1978); Hay J.G., (1996); Huang T.C., Roberts E.M., Youm Y., (1982). 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Human lower extremity kinetic relationships during systematic variations in resultant limb velocity, pp. 20-25, (1976)","","","W.B. Saunders","02785919","","CSMEE","9922896","English","Clin. Sports Med.","Article","Final","","Scopus","2-s2.0-0031712962" "Dos'Santos T.; Mcburnie A.; Thomas C.; Comfort P.; Jones P.A.","Dos'Santos, Thomas (57170712800); Mcburnie, Alistair (57209068775); Thomas, Christopher (56754565800); Comfort, Paul (26767602800); Jones, Paul A. (55308526600)","57170712800; 57209068775; 56754565800; 26767602800; 55308526600","Biomechanical Determinants of the Modified and Traditional 505 Change of Direction Speed Test","2020","Journal of Strength and Conditioning Research","34","5","","1285","1296","11","50","10.1519/JSC.0000000000003439","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85084026100&doi=10.1519%2fJSC.0000000000003439&partnerID=40&md5=e3beb086cadb63bd8fc6d4d1aa3ff6d4","Human Performance Laboratory, Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom","Dos'Santos T., Human Performance Laboratory, Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom; Mcburnie A., Human Performance Laboratory, Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom; Thomas C., Human Performance Laboratory, Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom; Comfort P., Human Performance Laboratory, Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom; Jones P.A., Human Performance Laboratory, Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom","The aim of this study was to investigate the whole-body biomechanical determinants of 180° change of direction (COD) performance. Sixty-one male athletes (age: 20.7 ± 3.8 years, height: 1.77 ± 0.06 m, mass: 74.7 ± 10.0 kg) from multiple sports (soccer, rugby, and cricket) completed 6 trials of the modified and traditional 505 on their right leg, whereby 3D motion and ground reaction force data were collected during the COD. Pearson's and Spearman's correlations were used to explore the relationships between biomechanical variables and COD completion time. Independent t-tests and Hedges' g effect sizes were conducted between faster (top 20) and slower (bottom 20) performers to explore differences in biomechanical variables. Key kinetic and kinematic differences were demonstrated between faster and slower performers with statistically significant (p ≤ 0.05) and meaningful differences (g = 0.56-2.70) observed. Faster COD performers displayed greater peak and mean horizontal propulsive forces (PF) in shorter ground contact times, more horizontally orientated peak resultant braking and PFs, greater horizontal to vertical mean and peak braking and PF ratios, greater approach velocities, and displayed greater reductions in velocity over key instances of the COD. In addition, faster performers displayed greater penultimate foot contact (PFC) hip, knee, and ankle dorsi-flexion angles, greater medial trunk lean, and greater internal pelvic and foot rotation. These aforementioned variables were also moderately to very largely (r or ρ = 0.317-0.795, p ≤ 0.013) associated with faster COD performance. Consequently, practitioners should focus not only on developing their athletes' ability to express force rapidly, but also develop their technical ability to apply force horizontally. In addition, practitioners should consider coaching a 180° turning strategy that emphasizes high PFC triple flexion for center of mass lowering while also encouraging whole-body rotation to effectively align the body toward the exit for faster performance. © 2019 National Strength and Conditioning Association.","braking force; force vector; pivoting; propulsive force; turning","Adolescent; Athletes; Athletic Performance; Biomechanical Phenomena; Cross-Sectional Studies; Exercise Test; Humans; Lower Extremity; Male; Range of Motion, Articular; Rotation; Soccer; Transcription Factors; Young Adult; Thrsp protein, mouse; transcription factor; adult; ankle dorsiflexion angle; article; athlete; contact time; controlled study; effect size; foot; ground reaction force; hip; human; knee; male; physician; rotation; rugby; soccer; trunk; velocity; young adult; adolescent; athletic performance; biomechanics; cross-sectional study; exercise test; joint characteristics and functions; lower limb; physiology; procedures","Asadi A., Arazi H., Young W.B., Saez V.E., The effects of plyometric training on change of direction ability: A meta analysis, Int J Sports Physiol Perform, 11, pp. 563-573, (2016); Baumgartner T.A., Chung H., Confidence limits for intraclass reliability coefficients, Meas Phys Educ Exerc Sci, 5, pp. 179-188, (2001); Bell A.L., Brand R.A., Pedersen D.R., Prediction of hip joint center location from external landmarks, Hum Mov Sci, 8, pp. 3-16, (1989); Bloomfield J., Polman R., Donoghue P., Physical demands of different positions in FA Premier League soccer, J Sport Sci Med, 6, pp. 63-70, (2007); Bourgeois F., McGuigan M.R., Gill N.D., Gamble G., Physical characteristics and performance in change of direction tasks: A brief review and training considerations, J Aust Strength Cond, 25, pp. 104-117, (2017); Dempster W.T., Space requirements of the seated operator: Geometrical, kinematic, and mechanical aspects of the body, with special reference to the limbs, (1955); Dos Santos T., Thomas C., Jones P.A., Comfort P., Assessing asymmetries in change of direction speed performance; application of change of direction deficit, J Strength Cond Res, 3, pp. 2953-2961, (2019); Dos'Santos T., Comfort P., Jones P.A., Average of trial peaks versus peak of average profile: Impact on change of direction biomechanics, Sport Biomech, (2018); Dos'Santos T., Thomas C., Jones A.P., Comfort P., Mechanical determinants of faster change of direction speed performance in male athletes, J Strength Cond Res, 31, pp. 696-705, (2017); Dos'Santos T., Thomas C., Comfort P., Jones P., The role of the penultimate foot contact during change of direction: Implications on performance and risk of injury, Strength Cond J, 41, pp. 87-104, (2019); Dos'Santos T., Thomas C., Comfort P., Jones P.A., The effect of angle and velocity on change of direction biomechanics: An angle-velocity trade-off, Sports Med, 48, pp. 2235-2253, (2018); Dos'Santos T., Thomas C., Jones P.A., Comfort P., Asymmetries in single and triple hop are not detrimental to change of direction speed, J Trainology, 6, pp. 35-41, (2017); 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Harper D.J., Jordan A.R., Kiely J., Relationships between eccentric and concentric knee strength capacities and maximal linear deceleration ability in male Academy Soccer Players, J Strength Cond Res, (2018); Havens K., Sigward S.M., Joint and segmental mechanics differ between cutting maneuvers in skilled athletes, Gait Posture, 41, pp. 33-38, (2015); Hedges L., Olkin I., Statistical Methods for Meta-Analysis, (1985); Hewit J., Cronin J., Button C., Hume P., Understanding deceleration in sport, Strength Cond J, 33, pp. 47-52, (2011); Hopkins W.G., A Scale of Magnitudes for Effect Statistics: A New View of Statistics, (2002); Jones P., Herrington L., Graham-Smith P., Technique determinants of knee joint loads during cutting in female soccer players, Hum Mov Sci, 42, pp. 203-211, (2015); Jones P., Herrington L., Graham-Smith P., Braking characteristics during cutting and pivoting in female soccer players, J Electromyogr Kines, 30, pp. 46-54, (2016); Jones P., Herrington L., Graham-Smith P., Technique determinants of knee abduction moments during pivoting in female soccer players, Clin Biomech, 31, pp. 107-112, (2016); Jones P., Stones S., Smith L., A comparison of braking characteristics between pre-planned and unanticipated changing direction tasks in female soccer players: An exploratory study. Day 1. Posters-Biomechanics, BASES Annual Conference, 25th November 2014, St Georges Park, Burton, J Sports Sci, 32, pp. S25-S26, (2014); Jones P., Thomas C., Dos'Santos T., McMahon J., Graham-Smith P., The role of eccentric strength in 180° turns in female soccer players, Sports, 5, (2017); Marshall B.M., Franklyn-Miller A.D., King E.A., Et al., Biomechanical factors associated with time to complete a change of direction cutting maneuver, J Strength Cond Res, 28, pp. 2845-2851, (2014); Morin J.B., Bourdin M., Edouard P., Et al., Mechanical determinants of 100-msprint running performance, Eur J Appl Physiol, 112, pp. 3921-3930, (2012); Morin J.B., Edouard P., Samozino P., Technical ability of force application as a determinant factor of sprint performance, Med Sci Sports Exerc, 43, pp. 1680-1688, (2011); Nedergaard N.J., Kersting U., Lake M., Using accelerometry to quantify deceleration during a high-intensity soccer turningmanoeuvre, J Sports Sci, 32, pp. 1897-1905, (2014); Nimphius S., Training change of direction and agility, Advanced Strength and Conditioning, pp. 291-308, (2017); Nimphius S., Callaghan S.J., Bezodis N.E., Lockie R.G., Change of direction and agility tests: Challenging our current measures of performance, Strength Cond J, 40, pp. 26-38, (2017); Nimphius S., Callaghan S.J., Sptieri T., Lockie R.G., Change of direction deficit: A more isolated measure of change of direction performance than total 505 time, J Strength Cond Res, 30, pp. 3024-3032, (2016); Nimphius S., Geib G., Spiteri T., Carlisle D., Change of direction deficit"" measurement in Division I American football players, J Aust Strength Cond, 21, pp. 115-117, (2013); Roewer B.D., Ford K.R., Myer G.D., Hewett T.E., The ""impact"" of force filtering cut-off frequency on the peak knee abduction moment during landing: Artefact or ""artifiction""?, Br J Sports Med, 48, pp. 464-468, (2014); Sasaki S., Nagano Y., Kaneko S., Sakurai T., Fukubayashi T., The relationship between performance and trunk movement during change of direction, J Sport Sci Med, 10, pp. 112-118, (2011); Spiteri T., Cochrane J.L., Hart N.H., Haff G.G., Nimphius S., Effect of strength on plant foot kinetics and kinematics during a change of direction task, Eur J Sports Sci, 13, pp. 646-652, (2013); Spiteri T., Newton R.U., Binetti M., Et al., Mechanical determinants of faster change of direction and agility performance in female basketball athletes, J Strength Cond Res, 28, pp. 2205-2214, (2015); Suntay W., A joint coordinate system for the clinical description of threedimensional motions: Application to the knee, J Biomech Eng, 105, pp. 136-144, (1983); Sweeting A.J., Aughey R.J., Cormack S.J., Morgan S., Discovering frequently recurring movement sequences in team-sport athlete spatiotemporal data, J Sports Sci, 35, pp. 2439-2445, (2017); Taylor J.M., Cunningham L., Hood P., Et al., The reliability of a modified 505 test and change-of-direction deficit time in elite youth football players, Sci Med Football, 3, pp. 1-6, (2018); Thomas C., Ismail K.T., Comfort P., Jones P.A., Dos'Santos T., Physical profiles of regional academy netball players, J Trainology, 5, pp. 30-37, (2016); Welch N., Richter C., Franklyn Miller A.D., Moran K., Principal component analysis of the biomechanical factors associated with performance during cutting, J Strength Cond Res, (2019); Winter D.A., Biomechanics and Motor Control of Human Motion, (1990); Winter D.A., Three-dimensional kinematics and kinetics, Biomechanics and Motor Control of Human Movement, pp. 176-199, (2009); Yeadon M.R., Kato T., Kerwin D.G., Measuring running speed using photocells, J Sports Sci, 17, pp. 249-257, (1999); Young W.B., Dawson B., Henry G.J., Agility and change-of-direction speed are independent skills: Implications for training for agility in invasion sports, Int J Sports Sci Coaching, 10, pp. 159-169, (2015)","T. Dos'Santos; Human Performance Laboratory, Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom; email: t.dossantos@edu.salford.ac.uk","","NSCA National Strength and Conditioning Association","10648011","","","31868815","English","J. Strength Cond. Res.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85084026100" "Burk J.M.; Munkasy B.A.; Joyner A.B.; Buckley T.A.","Burk, John M. (56052725700); Munkasy, Barry A. (7801350317); Joyner, A. Barry (8083526400); Buckley, Thomas A. (25027015000)","56052725700; 7801350317; 8083526400; 25027015000","Balance error scoring system performance changes after a competitive athletic season","2013","Clinical Journal of Sport Medicine","23","4","","312","317","5","45","10.1097/JSM.0b013e318285633f","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879881069&doi=10.1097%2fJSM.0b013e318285633f&partnerID=40&md5=43e007cc40fffb547747c6f350602136","Physical Therapy and Sports Medicine, Optim Healthcare, Statesboro, GA, United States; Department of Health and Kinesiology, Georgia Southern University, Statesboro, GA 30460, PO Box 8076, United States","Burk J.M., Physical Therapy and Sports Medicine, Optim Healthcare, Statesboro, GA, United States; Munkasy B.A., Department of Health and Kinesiology, Georgia Southern University, Statesboro, GA 30460, PO Box 8076, United States; Joyner A.B., Department of Health and Kinesiology, Georgia Southern University, Statesboro, GA 30460, PO Box 8076, United States; Buckley T.A., Department of Health and Kinesiology, Georgia Southern University, Statesboro, GA 30460, PO Box 8076, United States","OBJECTIVE: To evaluate the change in Balance Error Scoring System (BESS) performance after an athletic season. DESIGN: A prospective longitudinal group study. SETTING: University biomechanics research laboratory. PARTICIPANTS: A total of 58 college-aged females (23 soccer student-athletes, 16 volleyball student-athletes, and 19 recreationally active healthy college students) participated in the study. INTERVENTIONS: The BESS test was administered on 2 occasions 90 days apart. For the student-athletes, the first test (PRE) was administered before the start of their athletic season and the second test (POST) was administered immediately after the season. For the recreationally active college students, the PRE test was at the beginning of the academic semester and the POST test exactly 90 days thereafter. MAIN OUTCOME MEASURES: Total BESS score at PRE and POST was compared with a 3 × 2 repeated measures analysis of variance. The overall change score and absolute value change score were also calculated and compared with a 1-sample t test to an expected change of zero errors. RESULTS: There was no group by time interaction; however, there was a main effect for time. There was a significant improvement (P = 0.003) between PRE (9.00 ± 2.97 errors) and POST (7.92 ± 2.78 errors) BESS performance. There were significant differences for both the overall change score (1.08 errors) and the absolute value change score (2.00 errors). CONCLUSIONS: A clinically and statistically significant difference in BESS performance was identified after a 90-day intercollegiate athletic season. Copyright © 2013 by Lippincott Williams & Wilkins.","Balance error scoring system; Concussion; Postural control","Brain Concussion; Female; Humans; Mass Screening; Postural Balance; Prospective Studies; Soccer; Volleyball; Young Adult; adult; article; athlete; athletic performance; Balance Error Scoring System; biomechanics; college student; controlled study; female; human; human experiment; longitudinal study; male; normal human; priority journal; prospective study; recreation; scoring system; soccer; volleyball","McCrory P., Meeuwisse W., Johnston K., Et al., Consensus statement on concussion in sport: The 3rd international conference on concussion in sport held in Zurich, November 2008, J Athl Train, 44, pp. 434-448, (2009); Guskiewicz K.M., Bruce S.L., Cantu R.C., Et al., National Athletic Trainers' Association position statement: Management of sport-related concussion, J Athl Train, 39, pp. 280-297, (2004); Broglio S.P., Macciocchi S.N., Ferrara M.S., Sensitivity of the concussion assessment battery, Neurosurgery, 60, pp. 1050-1057, (2007); Lau B.C., Collins M.W., Lovell M.R., Sensitivity and specificity of subacute computerized neurocognitive testing and symptom evaluation in predicting outcomes after sports-related concussion, Am J Sports Med, 39, pp. 1209-1216, (2011); Covassin T., Elbin R., Stiller-Ostrowski J.L., Current sport-related concussion teaching and clinical practices of sports medicine professionals, J Athl Train, 44, pp. 400-404, (2009); Notebaert A.J., Guskiewicz K.M., Current trends in athletic training practice for concussion assessment and management, J Athl Train, 40, pp. 320-325, (2005); McCrea M., Guskiewicz K.M., Marshall S.W., Et al., Acute effects and recovery time following concussion in collegiate football players: The NCAA Concussion Study, JAMA, 290, pp. 2556-2563, (2003); Guskiewicz K.M., Ross S.E., Marshall S.W., Postural stability and neuropsychological deficits after concussion in collegiate athletes, J Athl Train, 36, pp. 263-273, (2001); Riemann B.L., Guskiewicz K.M., Shields E.W., Relationship between clinical and forceplate measures of postural stability, J Sport Rehabil, 8, pp. 71-82, (1999); Finnoff J.T., Peterson V.J., Hollman J.H., Et al., Intrarater and interrater reliability of the balance error scoring system (BESS), PM R, 1, pp. 50-54, (2009); Fox Z.G., Mihalik J.P., Blackburn J.T., Et al., Return of postural control to baseline after anaerobic and aerobic exercise protocols, J Athl Train, 43, pp. 456-463, (2008); Docherty C.L., McLeod T.C.V., Shultz S.J., Postural control deficits in participants with functional ankle instability as measured by the balance error scoring system, Clin J Sport Med, 16, pp. 203-208, (2006); Valovich McLeod T.C., Perrin D.H., Guskiewicz K.M., Et al., Serial administration of clinical concussion assessments and learning effects in healthy young athletes, Clin J Sport Med, 14, pp. 287-295, (2004); Valovich T.C., Perrin D.H., Gansneder B.M., Repeat administration elicits a practice effect with the balance error scoring system but not with the standardized assessment of concussion in high school athletes, J Athl Train, 38, pp. 51-56, (2003); Hunt T.N., Ferrara M.S., Bornstein R.A., Et al., The reliability of the modified balance error scoring system, Clin J Sport Med, 19, pp. 471-475, (2009); McLeod T.C.V., Armstrong T., Miller M., Et al., Balance improvements in female high school basketball players after a 6-week neuromusculartraining program, J Sport Rehabil, 18, pp. 465-481, (2009); Baechle T., Earle R., Essentials of Strength Training and Conditioning, (2008); McCrory P.R., Brain injury and heading in soccer, BMJ, 327, pp. 351-352, (2003); Gysland S.M., Mihalik J.P., Register-Mihalik J.K., Et al., The relationship between subconcussive impacts and concussion history on clinical measures of neurologic function in collegiate football players, Ann Biomed Eng, 40, pp. 14-22, (2012); Breedlove E.L., Robinson M., Talavage T.M., Et al., Biomechanical correlates of symptomatic and asymptomatic neurophysiological impairment in high school football, J Biomech, 45, pp. 1265-1272, (2012); Talavage T.M., Nauman E., Breedlove E.L., Et al., Functionally-detected cognitive impairment in high school football players without clinicallydiagnosed concussion [published online ahead of print October 1, 2010], J Neurotrauma; Matser J.T., Kessels A.G.H., Lezak M.D., Et al., A dose-response relation of headers and concussions with cognitive impairment in professional soccer players, J Clin Exp Neuropsychol, 23, pp. 770-774, (2001); Kaminski T.W., Cousino E.S., Glutting J.J., Examining the relationship between purposeful heading in soccer and computerized neuropsychological test performance, Res Q Exerc Sport, 79, pp. 235-244, (2008); Broglio S.P., Guskiewicz K.M., Sell T.C., Et al., No acute changes in postural control after soccer heading, Br J Sports Med, 38, pp. 561-567, (2004); Erkmen N., Taskin H., Kaplan T., Et al., The effect of fatiguing exercise on balance performance as measured by the balance error scoring system, Isokinet Exerc Sci, 17, pp. 121-127, (2009); Register-Mihalik J.K., Guskiewicz K.M., Mihalik J.P., Et al., Reliable change, sensitivity, and specificity of a multidimensional concussion assessment battery: Implications for caution in clinical practice [published online ahead of print June 9, 2012], J Head Trauma Rehabil; Bell D.R., Guskiewicz K.M., Clark M.A., Et al., Systematic review of the balance error scoring system, Sports Health, 3, pp. 287-295, (2011); Onate J.A., Beck B.C., Van Lunen B.L., On-field testing environment and balance error scoring system performance during preseason screening of healthy collegiate baseball players, J Athl Train, 42, pp. 446-451, (2007); Mancuso J.J., Guskiewicz K.M., Onate J.A., Et al., An investigation of the learning effect for the balance error scoring system and its clinical implications, J Athl Train, 37, (2002); Guskiewicz K.M., Balance assessment in the management of sport-related concussion, Clin Sports Med, 30, pp. 89-102, (2011)","T.A. Buckley; Department of Health and Kinesiology, Georgia Southern University, Statesboro, GA 30460, PO Box 8076, United States; email: tbuckley@georgiasouthern.edu","","","15363724","","CJSME","23558331","English","Clin. J. Sport Med.","Article","Final","","Scopus","2-s2.0-84879881069" "Loturco I.; Pereira L.A.; Kobal R.; Abad C.C.C.; Komatsu W.; Cunha R.; Arliani G.; Ejnisman B.; Pochini A.D.C.; Nakamura F.Y.; Cohen M.","Loturco, Irineu (38661433700); Pereira, Lucas Adriano (56214712600); Kobal, Ronaldo (55308038800); Abad, Cesar Cavinato Cal (36068918300); Komatsu, William (22957675500); Cunha, Ronaldo (56735662200); Arliani, Gustavo (37060303300); Ejnisman, Benno (6602333515); Pochini, Alberto De Castro (21743472100); Nakamura, Fábio Yuzo (8880204300); Cohen, Moises (21740902400)","38661433700; 56214712600; 55308038800; 36068918300; 22957675500; 56735662200; 37060303300; 6602333515; 21743472100; 8880204300; 21740902400","Functional Screening Tests: Interrelationships and Ability to Predict Vertical Jump Performance","2018","International Journal of Sports Medicine","39","3","","189","197","8","41","10.1055/s-0043-122738","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85043314261&doi=10.1055%2fs-0043-122738&partnerID=40&md5=48951073a9587f6bb52d99f244270736","NAR - Nucleus of High Performance in Sport, Sport Science, Av Padre Jose Maria 555, São Paulo, 04753060, Brazil; Universidade Federal de São Paulo, Escola Paulista de Medicina, Department of Orthopedics and Traumatology, São Paulo, Brazil; Universidade Estadual de Londrina, Departamento de Educação Física, Londrina, Brazil","Loturco I., NAR - Nucleus of High Performance in Sport, Sport Science, Av Padre Jose Maria 555, São Paulo, 04753060, Brazil, Universidade Federal de São Paulo, Escola Paulista de Medicina, Department of Orthopedics and Traumatology, São Paulo, Brazil; Pereira L.A., NAR - Nucleus of High Performance in Sport, Sport Science, Av Padre Jose Maria 555, São Paulo, 04753060, Brazil; Kobal R., NAR - Nucleus of High Performance in Sport, Sport Science, Av Padre Jose Maria 555, São Paulo, 04753060, Brazil; Abad C.C.C., NAR - Nucleus of High Performance in Sport, Sport Science, Av Padre Jose Maria 555, São Paulo, 04753060, Brazil; Komatsu W., Universidade Federal de São Paulo, Escola Paulista de Medicina, Department of Orthopedics and Traumatology, São Paulo, Brazil; Cunha R., Universidade Federal de São Paulo, Escola Paulista de Medicina, Department of Orthopedics and Traumatology, São Paulo, Brazil; Arliani G., Universidade Federal de São Paulo, Escola Paulista de Medicina, Department of Orthopedics and Traumatology, São Paulo, Brazil; Ejnisman B., Universidade Federal de São Paulo, Escola Paulista de Medicina, Department of Orthopedics and Traumatology, São Paulo, Brazil; Pochini A.D.C., Universidade Federal de São Paulo, Escola Paulista de Medicina, Department of Orthopedics and Traumatology, São Paulo, Brazil; Nakamura F.Y., Universidade Estadual de Londrina, Departamento de Educação Física, Londrina, Brazil; Cohen M., Universidade Federal de São Paulo, Escola Paulista de Medicina, Department of Orthopedics and Traumatology, São Paulo, Brazil","There are several methods used in sports science to identify asymmetries in athletes, given their purported relevance to injury prevention and performance optimization. We aimed to verify whether asymmetries provided by isokinetic assessments, jump tests, and tensiomyography (TMG) are associated with each other, and whether their respective functional indices are related to jumping ability. TMG parameters, unilateral and bilateral squat-jump (SJ) and countermovement-jump (CMJ) performances, and peak torque in knee-extension and flexion with angular velocities of 60 o /s and 300 o /s for twenty-four soccer players were retained for analyses. Asymmetry was detected by examining the percentage difference between dominant and non-dominant legs. The median-split technique was used to identify the best and worst performers in SJ and CMJ tests. Results revealed that the asymmetries detected in the three different methods were not interrelated. Curiously, better performances in SJ and CMJ tests were associated with higher asymmetry levels. Furthermore, only the knee-extension peak torque at both angular velocities was correlated moderately to largely (r=0.48-0.66) with jump performance. Despite their recognized ability to predict the risk of injury, the absence of interrelationships between TMG, isokinetic tests, and unilateral jumps precludes their single use as a unique functional screening diagnostic. Finally, and very importantly, lower-limb asymmetry is not necessarily related to impaired vertical jump performance in soccer players. © 2018 Georg Thieme Verlag KG Stuttgart New York.","football; functional assessments; injury prevention; plyometrics; team sports","Athletic Injuries; Athletic Performance; Biomechanical Phenomena; Exercise Test; Humans; Knee; Lower Extremity; Male; Muscle Strength; Myography; Plyometric Exercise; Risk Factors; Torque; Young Adult; accident prevention; article; football; functional assessment; human; jumping; knee; plyometrics; screening test; soccer player; team sport; torque; velocity; athletic performance; biomechanics; comparative study; exercise test; lower limb; male; muscle strength; myography; physiology; procedures; risk factor; sport injury; young adult","Alentorn-Geli E., Alvarez-Diaz P., Ramon S., Marin M., Steinbacher G., Boffa J.J., Cusco X., Ballester J., Cugat R., Assessment of neuromuscular risk factors for anterior cruciate ligament injury through tensiomyography in male soccer players, Knee Surg Sports Traumatol Arthrosc, 23, pp. 2508-2513, (2015); Alvarez-Diaz P., Alentorn-Geli E., Ramon S., Marin M., Steinbacher G., Rius M., Seijas R., Ballester J., Cugat R., Comparison of tensiomyographic neuromuscular characteristics between muscles of the dominant and non-dominant lower extremity in male soccer players, Knee Surg Sports Traumatol Arthrosc, 24, pp. 2259-2263, (2016); Bailey C., Sato K., Alexander R., Chiang C.Y., Stone M.H., Isometric force production symmetry and jumping performance in collegiate athletes, J Treinol, 2, pp. 1-5, (2013); Batterham A.M., Hopkins W.G., Making meaningful inferences about magnitudes, Int J Sports Physiol Perform, 1, pp. 50-57, (2006); Bell D.R., Sanfilippo J.L., Binkley N., Heiderscheit B.C., Lean mass asymmetry influences force and power asymmetry during jumping in collegiate athletes, J Strength Cond Res, 28, pp. 884-891, (2014); Bracic M., Supej M., Peharec S., Bacic P., Coh M., An investigation of the influence of bilateral deficit on the counter-movement jump performance in elite sprinters, Kinesiology, 42, pp. 73-81, (2010); 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Loturco; NAR - Nucleus of High Performance in Sport, Sport Science, São Paulo, Av Padre Jose Maria 555, 04753060, Brazil; email: irineu.loturco@terra.com.br","","Georg Thieme Verlag","01724622","","IJSMD","29284166","English","Int. J. Sports Med.","Article","Final","","Scopus","2-s2.0-85043314261" "Havens K.L.; Sigward S.M.","Havens, Kathryn L. (54581068700); Sigward, Susan M. (9735729200)","54581068700; 9735729200","Joint and segmental mechanics differ between cutting maneuvers in skilled athletes","2015","Gait and Posture","41","1","","33","38","5","66","10.1016/j.gaitpost.2014.08.005","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925670166&doi=10.1016%2fj.gaitpost.2014.08.005&partnerID=40&md5=9805e7b96083d7366a21cbdff34d4382","Division of Biokinesiology and Physical Therapy, University of Southern California, United States","Havens K.L., Division of Biokinesiology and Physical Therapy, University of Southern California, United States; Sigward S.M., Division of Biokinesiology and Physical Therapy, University of Southern California, United States","Cutting is necessary for participation in multidirectional sports but is also associated with non-contact ACL injury. Whole body demands of deceleration and redirection increase with greater cut angles. However, it is not known how these demands relate to differences in joint and segmental mechanics. Understanding the relationship between whole body and joint mechanics necessary for cutting and those related to risk for injury is important for the development of injury prevention training programs. The purpose of this study is to determine how joint and segmental mechanics change to meet increasing deceleration and redirection demands during cutting. Lower limb and trunk kinematics and kinetics were evaluated during the execution of two sidestep cutting maneuvers (to 45 and 90 degrees) in twenty-five healthy soccer players. A two-way multivariate analysis of covariance (MANCOVA) determined that differences existed between task directions but not sexes when considering all dependent variables and covarying for approach velocity (α≤. 0.05). Post hoc analyses revealed that the larger deceleration and redirection demands of the 90-degree cut did not translate into larger angles, moments and power across all lower extremity joints. In the sagittal plane, the knee appeared to primarily accommodate the greater deceleration demands of the sharper cut. These data further suggest that the hip may play a different role during cutting to smaller and larger angles and also illustrate a pattern of engagement in the sagittal and frontal planes that has not been described previously. © 2014 Elsevier B.V.","ACL injury; Agility performance; Cutting; Trunk; Turning","Adolescent; Adult; Athletes; Biomechanical Phenomena; Deceleration; Female; Humans; Kinetics; Knee Joint; Male; Multivariate Analysis; Sex Factors; Soccer; Torso; Young Adult; abduction; adult; ankle; Article; athlete; deceleration; female; hip; human; human experiment; joint function; joint mobility; kinematics; knee function; leg; male; mechanics; normal human; priority journal; skill; trunk; adolescent; biomechanics; deceleration; kinetics; knee; multivariate analysis; physiology; sex difference; soccer; young adult","Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in FA Premier League soccer, J Sport Sci Med, 6, pp. 63-70, (2007); Brughelli M., Cronin J., Levin G., Chaouachi A., Understanding change of direction ability in sport a review of resistance training studies, Sports Med, 38, pp. 1045-1063, (2008); Cochrane J.L., Lloyd D.G., Buttfield A., Seward H., McGivern J., Characteristics of anterior cruciate ligament injuries in Australian football, J Sci Med Sport, 10, pp. 96-104, (2007); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Griffin L.Y., Albohm M.J., Arendt E.A., Bahr R., Beynnon B.D., DeMaio M., Et al., Understanding and preventing noncontact anterior cruciate ligament injuries - a review of the Hunt Valley II Meeting, January 2005, Am J Sports Med, 34, pp. 1512-1532, (2006); Beynnon B.D., Fleming B.C., Johnson R.J., Nichols C.E., Renstrom P.A., Pope M.H., Anterior cruciate ligament strain behavior during rehabilitation exercises in-vivo, Am J Sports Med, 23, pp. 24-34, (1995); Markolf K.L., Burchfield D.I., Shapiro M.M., Shepard M.E., Finerman G.A.M., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, pp. 930-935, (1995); McLean S.G., Huang X.M., Van Den Bogert A.J., Investigating isolated neuromuscular control contributions to non-contact anterior cruciate ligament injury risk via computer simulation methods, Clin Biomech, 23, pp. 926-936, (2008); Shin C.S., Chaudhari A.M., Andriacchi T.P., Valgus plus internal rotation moments increase anterior cruciate ligament strain more than either alone, Med Sci Sports Exerc, 43, pp. 1484-1491, (2011); Havens K., Sigward S., Whole body postural mechanics of running turn maneuvers, Gait Posture; Neptune R.R., Wright I.C., Van Den Bogert A.J., Muscle coordination and function during cutting movements, Med Sci Sports Exerc, 31, pp. 294-302, (1999); Pollard C.D., Davis I.M., Hamill J., Influence of gender on hip and knee mechanics during a randomly cued cutting maneuver, Clin Biomech, 19, pp. 1022-1031, (2004); Sigward S., Powers C.M., The influence of experience on knee mechanics during side-step cutting in females, Clin Biomech, 21, pp. 740-747, (2006); Pollard C.D., Sigward S.M., Powers C.M., Gender differences in hip joint kinematics and kinetics during side-step cutting maneuver, Clin J Sport Med, 17, pp. 38-42, (2007); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1168-1175, (2001); Colby S., Francisco A., Yu B., Kirkendall D., Finch M., Garrett W., Electromyographic and kinematic analysis of cutting maneuvers - implications for anterior cruciate ligament injury, Am J Sports Med, 28, pp. 234-240, (2000); Landry S.C., McKean K.A., Hubley-Kozey C.L., Stanish W.D., Deluzio K.J., Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated side-cut maneuver, Am J Sports Med, 35, pp. 1888-1900, (2007); Rand M.K., Ohtsuki T., EMG analysis of lower limb muscles in humans during quick change in running directions, Gait Posture, 12, pp. 169-183, (2000); Berns G.S., Hull M.L., Patterson H.A., Strain in the anteromedial bundle of the anterior cruciate ligament under combination loading, J Orthop Res, 10, pp. 167-176, (1992); Glaister B.C., Orendurff M.S., Schoen J.A., Bernatz G.C., Klute G.K., Ground reaction forces and impulses during a transient turning maneuver, J Biomech, 41, pp. 3090-3093, (2008); Orendurff M.S., Segal A.D., Berge J.S., Flick K.C., Spanier D., Klute G.K., The kinematics and kinetics of turning: limb asymmetries associated with walking a circular path, Gait Posture, 23, pp. 106-111, (2006); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Russo K.A., The effect of technique change on knee loads during sidestep cutting, Med Sci Sports Exerc, 39, pp. 1765-1773, (2007); Sigward S.M., Powers C.M., Loading characteristics of females exhibiting excessive valgus moments during cutting, Clin Biomech, 22, pp. 827-833, (2007); Patla A.E., Adkin A., Ballard T., Online steering: coordination and control of body center of mass, head and body reorientation, Exp Brain Res, 129, pp. 629-634, (1999); Jamison S.T., Pan X.L., Chaudhari A.M.W., Knee moments during run-to-cut maneuvers are associated with lateral trunk positioning, J Biomech, 45, pp. 1881-1885, (2012); McLean S.G., Huang X.M., Van Den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: implications for ACL injury, Clin Biomech, 20, pp. 863-870, (2005); Sigward S., Cesar G., Havens K.L., Predictors of frontal plane knee moments during side-step cutting to 45° and 110° in men and women: implications for ACL injury, Clin J Sport Med; Song J., Sigward S., Fisher B., Salem G., Altered dynamic postural control during step turning in persons with early-stage Parkinson's disease, Parkinson's Dis, 2012, (2012); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of 3-dimensional motions - application to the knee, J Biomech Eng: Trans ASME, 105, pp. 136-144, (1983); Chaudhari A.M., Hearn B.K., Andriacchi T.P., Sport-dependent variations in arm position during single-limb landing influence knee loading - implications for anterior cruciate ligament injury, Am J Sports Med, 33, pp. 824-830, (2005); Sigward S.M., Powers C.M., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clin Biomech, 21, pp. 41-48, (2006); Brughelli M., Cronin J., Chaouachi A., Effects of running velocity on running kinemtics and kinematics, J Strength Cond Res, 25, pp. 933-939, (2011); Novacheck T.F., The biomechanics of running, Gait Posture, 7, pp. 77-95, (1998); Sell T.C., Ferris C.M., Abt J.P., Tsai Y.-S., Myers J.B., Fu F.H., Et al., Predictors of proximal tibia anterior shear force during a vertical stop-jump, J Orthop Res, 25, pp. 1589-1597, (2007); Yu B., Lin C.F., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clin Biomech, 21, pp. 297-305, (2006); Pollard C.D., Sigward S.M., Powers C.M., Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments, Clin Biomech, 25, pp. 142-146, (2010); Sigward S.M., Pollard C.D., Powers C.M., The influence of sex and maturation on landing biomechanics: implications for anterior cruciate ligament injury, Scand J Med Sci Sports, 22, pp. 502-509, (2012); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Knarr J.F., Thomas S.D., Griffin L.Y., Et al., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes - 2-year follow-up, Am J Sports Med, 33, pp. 1003-1010, (2005)","K.L. Havens; Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, 1540 Alcazar St, CHP 155, 90089, United States; email: khavens@usc.edu","","Elsevier B.V.","09666362","","GAPOF","25194689","English","Gait Posture","Article","Final","","Scopus","2-s2.0-84925670166" "Pau M.; Arippa F.; Leban B.; Corona F.; Ibba G.; Todde F.; Scorcu M.","Pau, Massimiliano (7005060268); Arippa, Federico (56584517200); Leban, Bruno (24537612000); Corona, Federica (37014418500); Ibba, Gianfranco (56717520200); Todde, Francesco (55607035400); Scorcu, Marco (39661419400)","7005060268; 56584517200; 24537612000; 37014418500; 56717520200; 55607035400; 39661419400","Relationship between static and dynamic balance abilities in Italian professional and youth league soccer players","2015","Physical Therapy in Sport","16","3","","236","241","5","59","10.1016/j.ptsp.2014.12.003","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84937513528&doi=10.1016%2fj.ptsp.2014.12.003&partnerID=40&md5=e957a87a49b292117886414ea19ba231","Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Cagliari, Italy; Cagliari Calcio S.p.A., Italy; Department of Medical Sciences, Sports Physiology Lab, University of Cagliari, Cagliari, Italy","Pau M., Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Cagliari, Italy; Arippa F., Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Cagliari, Italy; Leban B., Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Cagliari, Italy; Corona F., Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Cagliari, Italy; Ibba G., Cagliari Calcio S.p.A., Italy, Department of Medical Sciences, Sports Physiology Lab, University of Cagliari, Cagliari, Italy; Todde F., Cagliari Calcio S.p.A., Italy; Scorcu M., Cagliari Calcio S.p.A., Italy","Objectives: To assess the existence of correlations between static and dynamic balance abilities in young and professional elite soccer players. Design: Cross-sectional. Participants: Fifty-one elite players who regularly compete at national level divided into two groups: Professional (age 18-34, n=20) and Under 15-17 (age 14-16, n=31). Main outcome measures: Dynamic balance was assessed for the case of a single-leg landing task by means of vertical time to stabilization (TTS) and postural sway calculated on the basis of center-of-pressure (COP) trajectories (sway area, COP displacements in antero-posterior and medio-lateral direction, COP path length). The same parameters were also measured for a 20s one-legged stance to assess static balance abilities. Results: No significant correlations were found between static and dynamic balance parameters except for TTS and COP displacements in the antero-posterior direction (r=0.29, p=0.003). Professional players are characterized by lower TTS in comparison with youth leagues players (0.767 vs. 1.188s for the dominant limb, p<0.001) and exhibit reduced sway area (of 34-40%, p<0.05) for both conditions tested. Conclusion: The assessment of balance in soccer players should be performed with both dynamic and static tests, considering that the postural control performances in the two cases are not related. © 2014 Elsevier Ltd.","Dynamic balance; Postural control; Soccer; Time to stabilization (TTS)","Adolescent; Adult; Athletes; Cross-Sectional Studies; Humans; Italy; Postural Balance; Retrospective Studies; Soccer; Young Adult; adolescent; adult; age distribution; analytical parameters; Article; athlete; biomechanics; body equilibrium; center of pressure; competition; controlled study; cross-sectional study; dynamic balance; human; human experiment; Italian (citizen); normal human; priority journal; soccer; standing; static balance; time to stabilization; body equilibrium; Italy; physiology; retrospective study; young adult","Bakhtiari R.A., Evaluation of static and dynamic balance and knee proprioception in young professional players, Annals of Biological Research, 3, 6, pp. 2867-2873, (2012); Beynnon B.D., Murphy D.F., Alosa D.M., Predictive factors for lateral ankle sprains: a literature review, Journal of Athletic Training, 37, 4, pp. 376-380, (2002); Brazen D.M., Todd M.K., Ambeganonkar J.P., Wunderlich S., Peterson C., The effect of fatigue on landing biomechanics in single-leg drop landings, Clinical Journal of Sports Medicine, 20, 4, pp. 286-292, (2010); Brito J., Fontes I., Ribeiro F., Raposo A., Krustrup P., Rebelo A., Postural stability decreases in elite young soccer players after a competitive soccer match, Physical Therapy in Sport, 13, 3, pp. 175-179, (2012); Cachupe W.J.C., Shifflett B., Kahanov L., Wughalter E.H., Reliability of biodex balance system measures, Measurement in Physical Education and Exercise Science, 5, 2, pp. 97-108, (2001); Colby S.M., Hintermeister R.A., Torry M.R., Steadman J.R., Lower limb stability with ACL impairment, Journal of Orthopaedic and Sports Physical Therapy, 29, 8, pp. 444-451, (1999); Drowatzky J.N., Zuccato F.C., Interrelationships between selected measures of static and dynamic balance, The Research Quarterly, 38, 3, pp. 509-510, (1967); Flanagan E.P., Ebben W.P., Jensen R.L., Reliability of the reactive strength index and time to stabilization during depth jumps, Journal of Strength and Conditioning Research, 22, 5, pp. 1677-1682, (2008); Gioftsidou A., Malliou P., Pafis G., Beneka A., Godolias G., Maganaris C.N., The effects of soccer training and timing of balance training on balance ability, European Journal of Applied Physiology, 96, 6, pp. 659-664, (2006); Gribble P.A., Mitterholzer J., Myers A.N., Normalizing considerations for time to stabilization assessment, Journal of Science and Medicine in Sport, 15, 2, pp. 159-163, (2012); Hatzitaki V., Zisi V., Kollias I., Kioumourtzoglou E., Perceptual-motor contribution to static and dynamic balance control in children, Journal of Motor Behavior, 34, 2, pp. 161-170, (2002); Hrysomallis C., McLaughlin P., Goodman C., Relationship between static and dynamic balance tests among elite Australian footballers, Journal of Science and Medicine in Sport, 9, 4, pp. 288-291, (2006); Karimi M.T., Solomonidis S., The relationship between parameters of static and dynamic stability tests, Journal of Research in Medical Sciences, 16, 4, pp. 530-535, (2011); Kuczynski M., Rektor Z., Borzucka D., Postural control in quiet stance in the second league male volleyball players, Human Movement, 10, 1, pp. 12-15, (2009); Matsuda S., Demura S., Demura T., Examining differences between center of pressure sway in one-legged and two-legged stances for soccer players and typical adults, Perceptual and Motor Skills, 110, 3, pp. 751-760, (2010); Matsuda S., Demura S., Uchiyama M., Centre of pressure sway characteristics during static one-legged stance of athletes from different sports, Journal of Sports Sciences, 26, 7, pp. 775-779, (2008); McKinley P., Pedotti A., Motor strategies in landing from a jump: the role of skill in task execution, Experimental Brain Research, 90, 2, pp. 427-440, (1992); Paillard T., Noe F., Effect of expertise and visual contribution on postural control in soccer, Scandinavian Journal of Medicine & Science in Sports, 16, pp. 345-348, (2006); Paillard T., Noe F., Riviere T., Marion V., Montoya R., Dupui P., Postural performance and strategy in the unipedal stance of soccer players at different levels of competition, Journal of Athletic Training, 41, 2, pp. 172-176, (2006); Pau M., Ibba G., Attene G., Fatigue-induced balance impairment in young soccer players, Journal of Athletic Training, 49, 4, pp. 454-461, (2014); Pau M., Leban B., Ibba G., Scorcu M., Characterization of static balance abilities in elite football (soccer) players by playing position and age, Research in Sports Medicine, 22, 4, pp. 373-385, (2014); Riemann B.L., Myers J.B., Lephart S.M., Sensorimotor measurement techniques, Journal of Athletic Training, 37, 1, pp. 85-98, (2002); Saunders N.W., Hanson N., Koutakis P., Chaudhari A.M., Devor S.T., Landing ground reaction forces in figure skaters and non-skaters, Journal of Sports Sciences, 32, 11, pp. 1042-1049, (2014); Sell T.C., An examination, correlation and comparison of static and dynamic measures of postural stability in healthy, physically active adult, Physical Therapy in Sport, 13, 2, pp. 80-86, (2012); Teixeira L.A., de Oliveira D.L., Romano R.G., Correa S.C., Leg preference and interlateral asymmetry of balance stability in soccer players, Research Quarterly for Exercise and Sport, 82, 1, pp. 21-27, (2011); Trojian T.H., McKeag D.B., Single leg balance test to identify risk of ankle sprains, British Journal of Sports Medicine, 40, pp. 610-613, (2006); Wikstrom E.A., Powers M.E., Tillman M.D., Dynamic stabilization time after isokinetic and functional fatigue, Journal of Athletic Training, 39, 3, pp. 247-253, (2004); Wikstrom E.A., Tillman M.D., Smith A.N., Borsa P.A., Anew force-plate technology measure of dynamic postural stability: the dynamic postural stability index, Journal of Athletic Training, 40, 4, pp. 305-309, (2005)","M. Pau; Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Cagliari, Piazza d'Armi, 09123, Italy; email: massimiliano.pau@dimcm.unica.it","","Churchill Livingstone","1466853X","","PTSHB","25869425","English","Phys. Ther. Sport","Article","Final","","Scopus","2-s2.0-84937513528" "Gaudino P.; Gaudino C.; Alberti G.; Minetti A.E.","Gaudino, Paolo (55326119100); Gaudino, Claudio (36027407600); Alberti, Giampietro (57219919222); Minetti, Alberto E. (7003888015)","55326119100; 36027407600; 57219919222; 7003888015","Biomechanics and predicted energetics of sprinting on sand: Hints for soccer training","2013","Journal of Science and Medicine in Sport","16","3","","271","275","4","62","10.1016/j.jsams.2012.07.003","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876711678&doi=10.1016%2fj.jsams.2012.07.003&partnerID=40&md5=25108d54864b4edc2e22c96a2d7d7933","Department of Biomedical Sciences for Health, University of Milan, Italy; Faculty of Sports Sciences (SUISM), University of Turin, Italy; Department of Pathophysiology and Transplantation, University of Milan, Italy","Gaudino P., Department of Biomedical Sciences for Health, University of Milan, Italy; Gaudino C., Faculty of Sports Sciences (SUISM), University of Turin, Italy; Alberti G., Department of Biomedical Sciences for Health, University of Milan, Italy; Minetti A.E., Department of Pathophysiology and Transplantation, University of Milan, Italy","Objectives: The purpose of this study was to analyse energetic and biomechanical parameters of sprinting on sand surface, aimed at the evaluation of inherent aspects of soccer training programs, injury prevention and recovery processes. Design: Twenty-nine professional soccer players took part in this study: they performed maximal sprints and maximal shuttle sprints on a 12. m distance on natural grass, artificial turf and soft, dry sand. Methods: Speed, acceleration, deceleration, stride length, stride frequency, flight and contact time, estimated energy cost, metabolic and mechanical power, efficiency and stiffness values, have been calculated through the instrument SPI-Pro (GPSports, Canberra, Australia) supported by two fixed cameras. Results: The comparison between values recorded on sand with those recorded on natural or artificial grass has highlighted significant decreases (p< 0.001) of speed, acceleration, stride length, flight time and mechanical power, efficiency and stiffness. Contact time, energy cost, metabolic power (p< 0.001) and deceleration (p< 0.05) were higher on sand whereas no significant differences were found regarding stride frequency (p> 0.05). Conclusions: These results show that on sand it is possible to perform maximal intensity sprints with higher energy expenditure and metabolic power values, without reaching maximum speed and with smaller impact shocks. Furthermore, exercises with change of direction carried out on this surface allow to reach higher deceleration values. In addition, sprinting on sand potentially entails a limited stretch of the involved muscles. It can therefore offer a valid alternative to traditional training, injury prevention and rehabilitation programs. © 2012 Sports Medicine Australia.","Acceleration; Deceleration; Energy cost; GPS; Metabolic power; Stiffness","Adolescent; Biomechanical Phenomena; Energy Metabolism; Humans; Male; Predictive Value of Tests; Running; Silicon Dioxide; Soccer; Young Adult; adult; article; athlete; biomechanics; energy transfer; female; human; human experiment; measurement; prediction; running; sand; sport; sport injury; sprint running; training","Lejeune T.M., Willems P.A., Heglund N.C., Mechanics and energetics of human locomotion on sand, J Exp Biol, 201, pp. 2071-2080, (1998); Zamparo P., Perini R., Orizio C., Et al., The energy cost of walking or running on sand, Eur J Appl Physiol Occup Physiol, 65, 2, pp. 183-187, (1992); Davies S.E., Mackinnon S.N., The energetics of walking on sand and grass at various speeds, Ergonomics, 49, 7, pp. 651-660, (2006); Pinnington H.C., Dawson B., Running economy of elite surf iron men and male runners, on soft dry beach sand and grass, Eur J Appl Physiol, 86, 1, pp. 62-70, (2001); Pinnington H.C., Lloyd D.G., Besier T.F., Et al., Kinematic and electromyography analysis of submaximal differences running on a firm surface compared with soft, dry sand, Eur J Appl Physiol, 94, 3, pp. 242-253, (2005); Pinnington H.C., Dawson B., The energy cost of running on grass compared to soft dry beach sand, J Sci Med Sport, 4, 4, pp. 416-430, (2001); Vigne G., Gaudino C., Rogowski I., Et al., Activity profile in elite Italian soccer team, Int J Sports Med, 31, 5, pp. 304-310, (2010); Macleod H., Sunderland C., Reliability and validity of a global positioning system for measuring player movement patterns during field hockey, Med Sci Sports Exerc, 39, 5, pp. 209-210, (2007); Randers M.B., Mujika I., Hewitt A., Et al., Application of four different football match analysis systems: a comparative study, J Sports Sci, 28, 2, pp. 171-182, (2010); Portas M.D., Harley J.A., Barnes C.A., Et al., The validity and reliability of 1-Hz and 5-Hz global positioning systems for linear, multidirectional, and soccer-specific activities, Int J Sports Physiol Perform, 5, 4, pp. 448-458, (2010); Barbero-Alvarez J.C., Coutts A.J., Granda J., Et al., The validity and reliability of a global positioning satellite system device to assess speed and repeated sprint ability (RSA) in athletes, J Sci Med Sport, 13, 2, pp. 232-235, (2010); Coutts A.J., Duffield R., Validity and reliability of GPS devices for measuring movement demands of team sports, J Sci Med Sport, 1, pp. 133-135, (2010); Duffield R., Reid M., Baker J., Et al., Accuracy and reliability of GPS devices for measurement of movement patterns in confined spaces for court-based sports, J Sci Med Sport, 13, 5, pp. 523-525, (2010); di Prampero P.E., Fusi S., Sepulcri L., Et al., Sprint running: a new energetic approach, J Exp Biol, 208, 14, pp. 2809-2816, (2005); Minetti A.E., Moia C., Roi G.S., Et al., Energy cost of walking and running at extreme uphill and downhill slopes, J Appl Physiol, 93, 3, pp. 1039-1046, (2002); Osgnach C., Poser S., Bernardini R., Et al., Energy cost and metabolic power in elite soccer: a new match analysis approach, Med Sci Sports Exerc, 42, 1, pp. 170-178, (2010); Cavagna G.A., Elastic bounce of the body, J Appl Physiol, 29, 3, pp. 279-282, (1970); Morin J.B., Dalleau G., Kyrolainen H., Et al., A simple method for measuring stiffness during running, J Appl Biomech, 21, 2, pp. 167-180, (2005); Butler R.J., Crowell H.P., Davis I.M., Lower extremity stiffness: implications for performance and injury, Clin Biomech, 18, 6, pp. 511-517, (2003); Ferris D.P., Farley C.T., Interaction of leg stiffness and surface stiffness during human hopping, J Appl Physiol, 82, 1, pp. 15-22, (1997); Ferris D.P., Louie M., Farley C.T., Running in the real world: adjusting leg stiffness for different surfaces, Proc Biol Sci, 265, 1400, pp. 989-994, (1998); Barrett R.S., Neal R.J., Roberts L.J., The dynamic loading response of surfaces encountered in beach running, J Sci Med Sport, 1, 1, pp. 1-11, (1998)","P. Gaudino; Department of Biomedical Sciences for Health, University of Milan, Italy; email: paolo.gaudino@unimi.it","","","18781861","","JSMSF","22883597","English","J. Sci. Med. Sport","Article","Final","","Scopus","2-s2.0-84876711678" "Bauer J.A.; Thomas T.S.; Cauraugh J.H.; Kaminski T.W.; Hass C.J.","Bauer, Jeffrey A. (7402814538); Thomas, Tom S. (55425216200); Cauraugh, James H. (7003606620); Kaminski, Thomas W. (7005758157); Hass, Chris J. (7003757379)","7402814538; 55425216200; 7003606620; 7005758157; 7003757379","Impact forces and neck muscle activity in heading by collegiate female soccer players","2001","Journal of Sports Sciences","19","3","","171","179","8","66","10.1080/026404101750095312","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035127445&doi=10.1080%2f026404101750095312&partnerID=40&md5=6cdbc1ca4f274fc011ec6cdbfe72721c","Department of Exercise and Sports Studies, SUNY Cortland, Cortland, NY 13045, United States; Center for Exercise Science, Department of Exercise and Sport Sciences, University of Florida, Gainesville, FL 32611, United States","Bauer J.A., Department of Exercise and Sports Studies, SUNY Cortland, Cortland, NY 13045, United States; Thomas T.S., Center for Exercise Science, Department of Exercise and Sport Sciences, University of Florida, Gainesville, FL 32611, United States; Cauraugh J.H., Center for Exercise Science, Department of Exercise and Sport Sciences, University of Florida, Gainesville, FL 32611, United States; Kaminski T.W., Center for Exercise Science, Department of Exercise and Sport Sciences, University of Florida, Gainesville, FL 32611, United States; Hass C.J., Center for Exercise Science, Department of Exercise and Sport Sciences, University of Florida, Gainesville, FL 32611, United States","Three soccer header types (shooting, clearing and passing) and two heading approaches (standing and jumping) were manipulated to quantify impact forces and neck muscle activity in elite female soccer players. The 15 participants were Division I intercollegiate soccer players. Impact forces were measured by a 15-sensor pressure array secured on the forehead. The electromyographic (EMG) activity of the left and right sternocleidomastoid and trapezius muscles was recorded using surface electrodes. Maximum impact forces and impulses as well as the EMG data were analysed with separate repeated-measures analyses of variance. Impact forces and impulses did not differ among the header types or approaches. Higher values were found for jumping versus standing headers in the mean normalized EMG for the right sternocleidomastoid. In addition, the integrated EMG was greater for the right sternocleidomastoid and right and left trapezius (P < 0.05). The sternocleidomastoid became active earlier than the trapezius and showed greater activity before ball contact. The trapezius became active just before ball contact and showed greater activity after ball contact. The increased muscle activity observed in the neck during the jumping approach appears to stabilize the connection between the head and body, thereby increasing the stability of the head-neck complex.","Biomechanics; Heading; Kinetics; Soccer","Adult; Analysis of Variance; Biomechanics; Brain Concussion; Electromyography; Female; Humans; Muscle, Skeletal; Neck; Soccer; adult; article; biomechanics; comparative study; controlled study; electromyography; female; force; human; human experiment; jumping; kinetics; muscle contraction; neck muscle; population research; sensor; sport; sports medicine; standing; statistical analysis; sternocleidomastoid muscle; trapezius muscle","Atha J., Yeadon M.R., Sandover J., Parsons K.C., The damaging punch, British Medical Journal (Clinical Research Education), 291, pp. 1756-1757, (1985); Benedek G.B., Villars F.M.H., Physics with Illustrative Examples from Medicine and Biology, 1, pp. 4-75, (1974); Boden B.P., Kirkendall D.T., Garrett W.E., Concussion incidence in elite college soccer players, American Journal of Sports Medicine, 26, pp. 238-241, (1998); Burslem I., Lees A., Quantification of impact accelerations of the head during the heading of a football, Science and Football, pp. 243-248, (1988); Fields K.B., Head injuries in soccer, Physician and Sportsmedicine, 17, pp. 69-73, (1989); Green G.A., Jordan S.E., Are brain injuries a significant problem in soccer?, Clinics in Sports Medicine, 17, pp. 795-809, (1998); Lynch J.M., Bauer J.A., Acute head and neck injuries, The U.S. Soccer Sports Medicine Book, (1996); Matser J.T., Kessels A.G., Jordan B.D., Lezak M.D., Troost J., Chronic traumatic brain injury in professional soccer players, Neurology, 51, pp. 791-796, (1998); Mawdsley H.P., A biomechanical analysis of heading, Momentum, 3, pp. 16-21, (1978); Putukian M., Echemendia R.J., Mackin S., The acute neuropsychological effects of heading in soccer: A pilot study, Clinical Journal of Sports Medicine, 10, pp. 104-109, (2000); Reid S.E., Epstein H.M., Louis M.W., Reid S.E., Physiologic response to impact, Journal of Trauma, 15, pp. 150-152, (1975); Schneider K., Zernicke R.L., Computer simulation of head impact: Estimation of head-injury risk during soccer heading, International Journal of Sport Biomechanics, 4, pp. 358-371, (1988); Shapiro I., Frankel V.H., Biomechanics of the cervical spine, Basic Biomechanics of the Musculoskeletal System, pp. 209-224, (1989); Smodlaka V.N., Medical aspects of heading the ball in soccer, Physician and Sportsmedicine, 12, pp. 127-131, (1984); Sortland O., Tysvaer A.T., Brain damage in former association football players: An evolution by cerebral computed tomography, Neuroradiology, 31, pp. 44-48, (1989); Townend M.S., Is heading the ball a dangerous activity?, Science and Football, pp. 237-242, (1988); Tysvaer A.T., Head and neck injuries in soccer: Impact of minor trauma, Sports Medicine, 14, pp. 200-213, (1992); Tysvaer A.T., Storli O., Association football injuries to the brain: A preliminary report, British Journal of Sports Medicine, 15, pp. 163-166, (1981); Tysvaer A.T., Storli O., Soccer injuries to the brain: A neurologic and electroencephalographic study of active football players, American Journal of Sports Medicine, 17, pp. 573-578, (1989); Ward A.A., The physiology of concussion, Clinical Neurosurgery, 15, pp. 95-111, (1966)","","","","02640414","","","11256822","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-0035127445" "Green G.A.; Jordan S.E.","Green, G.A. (57213704067); Jordan, S.E. (7201748374)","57213704067; 7201748374","Are brain injuries a significant problem in soccer?","1998","Clinics in Sports Medicine","17","4","","795","809","14","42","10.1016/S0278-5919(05)70120-4","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0031717298&doi=10.1016%2fS0278-5919%2805%2970120-4&partnerID=40&md5=e9f6665d1bd4895e06bb3961a9fc52c5","UCLA Department of Family Medicine, 50-071 CHS, Los Angeles, CA 90095-1683, 10833 Le Conte Avenue, United States","Green G.A., UCLA Department of Family Medicine, 50-071 CHS, Los Angeles, CA 90095-1683, 10833 Le Conte Avenue, United States; Jordan S.E., UCLA Department of Family Medicine, 50-071 CHS, Los Angeles, CA 90095-1683, 10833 Le Conte Avenue, United States","This article examines the types of forces that the brain is subjected to in soccer, secondary to both acute brain injury and repetitive heading of the ball. The incidence of acute brain injury is reviewed, as well as studies documenting the effects of heading the ball. Finally, 10 actions are proposed that would make soccer a safer sport with respect to brain injuries and provide avenues for further study in this area.","","athlete; biomechanics; brain concussion; brain injury; head injury; human; incidence; migraine; neuropsychological test; practice guideline; protective equipment; repetitive strain injury; review; sport injury; sports medicine","American Academy of Pediatrics Policy Statement, Recommendations for Participation in Competitive Sports, Physician and Sports Medicine, 16, pp. 165-167, (1988); Buckley W.E., Concussions in college football: A multivariate analysis, Am J Sports Med, 16, pp. 51-56, (1988); Cantu R.C., Voy R., Case report: Second impact syndrome a risk in any contact sport, The Physician and Sports Medicine, 23, pp. 27-34, (1995); Cantu R.C., Head injuries in sport, Br J Sports Med, 30, pp. 289-296, (1996); Dailey S.W., Barsan W.G., Head injuries in soccer: A case for protective headgear?, The Physician and Sports Medicine, 20, pp. 79-85, (1992); Frenguelli A., Ruscito P., Bicciolo G., Et al., Head and neck trauma in sporting activities: Review of 208 cases, J Craniomaxillofac Surg, 19, pp. 178-181, (1991); Green G.A., Jordan S.E., Chronic head and neck injuries, pp. 191-204, (1996); Guskiewicz K.M., Perrin D.H., Gansneder B.M., Effect of mild head injury on postural stability in athletes, Journal of Athletic Training, 31, pp. 300-306, (1996); Haglund Y., Eriksson E., Does amateur boxing lead to chronic brain damage?, Am J Sports Med, 21, pp. 97-109, (1993); Janda D.H., Bir C., Wild B., Et al., Goal post injuries in soccer: A laboratory and field testing analysis of a preventive intervention, Am J Sports Med, 23, pp. 340-344, (1995); Jordan B.D., Relkin N.R., Ravdin L.D., Et al., Apolipoprotein E epsilon4 associated with chronic traumatic brain injury in boxing, JAMA, 278, pp. 136-140, (1997); Jordan S.W., Green G.A., Galanty H.L., Et al., Acute and chronic brain injury in United States national team soccer players, Am J Sports Med, 24, pp. 205-209, (1996); Keller C.S., Noyes F.R., Buncher R., The medical aspects of soccer injury epidemiology, Am J Sports Med, 15, pp. 230-237, (1987); Kelly J.P., Nichols J.S., Filley C.M., Et al., Concussion in sports: Guidelines for the prevention of catastrophic outcome, JAMA, 266, pp. 2867-2869, (1991); Matthews W.B., Footballer's migraine, BMJ, 2, pp. 326-327, (1972); (1997); Putukian M., Knowles W.K., Swere S., Et al., Am J Sports Med, 24, pp. 317-322, (1996); Richards J.G., Liberi V., Determining linear head acceleration and risk of injury in soccer heading, (1994); Ross R.J., Casson I.R., Siegel O.S., Et al., Boxing injuries: Neurologic, radiologic and neuropsychologic evaluation, Clin Sports Med, 6, pp. 41-51, (1987); Sortland O., Tysvaer A.T., Storli O.V., Changes in the cervical spine in association football players, Br J Sports Med, 16, pp. 80-84, (1982); Sortland O., Tysvaer A.T., Brain damage in former association football players: An evaluation by cerebral computed tomography, Neuroradiology, 31, pp. 44-48, (1989); Tysvaer A., Storli O., Association football injuries to the brain: A preliminary report, Br J Sports Med, 15, pp. 163-166, (1981); Tysvaer A.T., Storli O., Soccer injuries to the brain: A neurologic and EEG study of active football players, Am J Sports Med, 17, pp. 573-578, (1989); Tysvaer A.T., Lochen E.A., Soccer injuries to the brain: A neuropsychologic study of former soccer players, Am J Sports Med, 19, pp. 56-60, (1991)","G.A. Green; UCLA Department of Family Medicine, 50-071 CHS, Los Angeles, CA 90095-1683, 10833 Le Conte Avenue, United States; email: GGREEN@MedNet.ucla.edu","","W.B. Saunders","02785919","","CSMEE","9922903","English","Clin. Sports Med.","Article","Final","","Scopus","2-s2.0-0031717298" "Queen R.M.; Weinhold P.S.; Kirkendall D.T.; Yu B.","Queen, Robin M. (24503786500); Weinhold, Paul S. (7005733255); Kirkendall, Donald T. (7003555207); Yu, Bing (35301366400)","24503786500; 7005733255; 7003555207; 35301366400","Theoretical Study of the Effect of Ball Properties on Impact Force in Soccer Heading","2003","Medicine and Science in Sports and Exercise","35","12","","2069","2076","7","52","10.1249/01.MSS.0000099081.20125.A5","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0344235470&doi=10.1249%2f01.MSS.0000099081.20125.A5&partnerID=40&md5=78df1f0e11e82fd93c00d1ca88125604","Department of Biomedical Engineering, Division of Physical Therapy, University of North Carolina, Chapel Hill, NC, United States; Department of Orthopaedics, Division of Physical Therapy, University of North Carolina, Chapel Hill, NC, United States; Center for Human Movement Science, Division of Physical Therapy, University of North Carolina, Chapel Hill, NC, United States; Department of Biomedical Engineering, 152 Macnider Building, University of North Carolina, Chapel Hill, NC 27599-7135, United States","Queen R.M., Department of Biomedical Engineering, Division of Physical Therapy, University of North Carolina, Chapel Hill, NC, United States, Center for Human Movement Science, Division of Physical Therapy, University of North Carolina, Chapel Hill, NC, United States, Department of Biomedical Engineering, 152 Macnider Building, University of North Carolina, Chapel Hill, NC 27599-7135, United States; Weinhold P.S., Department of Biomedical Engineering, Division of Physical Therapy, University of North Carolina, Chapel Hill, NC, United States, Department of Orthopaedics, Division of Physical Therapy, University of North Carolina, Chapel Hill, NC, United States; Kirkendall D.T., Department of Orthopaedics, Division of Physical Therapy, University of North Carolina, Chapel Hill, NC, United States, Center for Human Movement Science, Division of Physical Therapy, University of North Carolina, Chapel Hill, NC, United States; Yu B., Department of Biomedical Engineering, Division of Physical Therapy, University of North Carolina, Chapel Hill, NC, United States, Department of Orthopaedics, Division of Physical Therapy, University of North Carolina, Chapel Hill, NC, United States, Center for Human Movement Science, Division of Physical Therapy, University of North Carolina, Chapel Hill, NC, United States","Purpose: The objective of this study was to theoretically model, based on the Hertz contact theory, the impact force and contact time, as well as the linear and angular head accelerations during heading in children using two neck stiffness conditions (infinite and negligible stiffness). Methods: The following mathematical model inputs were obtained: elastic modulus and mass of size three, four, and five balls at inflation pressures of 10, 12, and 14 psi, head modulus, head mass, head length, head and trunk moment of inertia, and the precontact ball velocity. The model outputs consisted of linear and angular head acceleration, impact force, contact time between the ball and head, and head impact criteria (HIC) all at the point of impact. Head mass and length were obtained as a percentage of body weight and height, respectively, based on age. Results: With an increase in head mass, there is a decrease in the linear and angular head acceleration. With an increase in ball size, for the same head mass, there is an increase in the contact time between the head and the ball. Changing ball inflation pressure has little effect on the impact characteristics. Infinite neck stiffness decreased linear and angular head acceleration and HIC. Conclusion: Head mass and ball size have an effect on linear and angular head acceleration and contact time, respectively, whereas ball inflation pressure has a minimal effect on the impact characteristics. These results indicate that children should be restricted to using the appropriate ball for their age. Smaller head size within an age group is an underemphasized though important identifier of a player's injury risk.","Ball size; Children; Inflation pressure; Mathematical modeling","Acceleration; Age Factors; Biomechanics; Child; Equipment Design; Female; Head; Humans; Male; Models, Biological; Neck; Soccer; age; article; body height; body weight; injury; mathematical model; nonhuman; sport injury; theoretical model; young modulus","Armstrong C.W., Levendusky T.A., Eck J.S., Spyropoulos P., Influence of inflation pressure and ball wetness on impact characteristics of two types of soccer balls, Science and Football, pp. 394-398, (1987); Barnes B.C., Cooper L., Kirkendall D.T., Mcdermott T.P., Jordan B.D., Garrett Jr. W.E., Concussion history in elite male and female soccer players, Am. J. Sports Med., 26, pp. 433-438, (1998); Baroff G.S., Is heading a soccer ball injurious to brain function?, J. Head Trauma Rehabil., 13, pp. 45-52, (1998); Chou C., Nyquist G., Analytical study of the head injury criterion (HIC), SAE 740082, pp. 197-212, (1974); Collins M.W., Grindel S.H., Lovell M.R., Et al., Relationship between concussion and neuropsychological performance in college football players, JAMA, 282, pp. 964-970, (1999); Crisco J.J., Hendee S.P., Greenwald R.M., The influence of baseball modulus and mass on head and chest impacts: A theoretical study, Med. Sci. Sports Exerc., 29, pp. 26-36, (1997); Ekblom B., Biomechanical aspects, Football (Soccer), (1994); Green G.A., Jordan S.E., Are brain injuries a significant problem in soccer?, Clin. Sports Med., 17, pp. 795-809, (1998); Greszczuk L.B., Damage in composite materials due to low velocity impact, Impact Dynamics, pp. 55-94, (1992); Guskiewicz K.M., Marshall S.W., Broglio S.P., Cantu R.C., Kirkendall D.T., No evidence of impaired neurocognitive performance in collegiate soccer players, Am. J. Sports Med., 30, pp. 157-162, (2002); Jensen R.K., Body segment mass, radius, and radius of gyration proportions of children, J. Biomech., 19, pp. 359-368, (1986); Jensen R.K., Changes in segment inertia proportions between 4 and 20 years, J. Biomech., 22, pp. 529-536, (1989); Jordan S.E., Green G.A., Galantry H.L., Mandelbaum B.R., Jabour B.A., Acute and chronic brain injuries in United States national team soccer players, Am. J. Sports Med., 24, pp. 205-210, (1996); Kelly J.P., Traumatic brain injuries and concussion in sports, JAMA, 282, pp. 989-991, (1999); Khalil T.B., Viano D.C., Critical issues in finite modeling of head impact, Biomechanics of Impact Injury and Injury Tolerance of the Head-Neck Complex, pp. 1107-1122, (1993); Levendusky T.A., Armstrong C.W., Eck J.S., Jeziorowski J., Kugler L., Impact characteristics of two types of soccer balls, Science and Football, pp. 385-393, (1987); Matser J.T., Kessels A.G.H., Jordan B.D., Lezak M.D., Troost J., Chronic traumatic brain injury in professional soccer players, Neurology, 51, pp. 791-796, (1998); Matser J.T., Kessels A.G.H., Lezak M.D., Jordan B.D., Troost J., Neuropsychological impairment in amateur soccer players, JAMA, 28, pp. 971-973, (1999); Mcnair P., Wood G., Marshall R., Stiffness of the hamstring muscles and its relationship to function in anterior cruciate ligament deficient individuals, Clin. Biomech., 7, pp. 131-137, (1992); Naunheim R.S., Does soccer headgear attenuate the impact when heading a soccer ball?, Acad. Emerg. Med., 10, pp. 85-90, (2003); Naunheim R.S., Standeven J., Richter C., Lewis L.M., Comparison of impact data in hockey, football, and soccer, J. Trauma-Injury Infect. Crit. Care, 48, pp. 938-941, (2000); Pheasant S., Anthropometric data, Bodyspace, pp. 174-213, (2001); Schneider K., Zernicke R.F., Computer simulation of head impact: Estimation of head-injury risk during soccer heading, Int. J. Sports Biomech., 4, pp. 358-371, (1988); Timoshenko S., Goodier J.N., Axially symmetrical stress distributions, Theory of Elasticity, pp. 372-384, (1951); Tysvaer A.T., Head and neck injuries in soccer: Impact of minor trauma, Sports Med., 14, pp. 200-213, (1992); Tysvaer A.T., Lochen E.A., Soccer injuries to the brain: A neuropsychologic study of former soccer players, Am. J. Sports Med., 19, pp. 56-60, (1995); Wilson G., Wood G., Elliott B., The relationship between stiffness of the musculature and static flexibility: An alternative explanation for the occurrence of muscular injury, Int. J. Sports Biomech., 12, pp. 403-407, (1991)","R.M. Queen; Department of Biomedical Engineering, 152 Macnider Building, University of North Carolina, Chapel Hill, NC 27599-7135, United States; email: rqueen@med.unc.edu","","","01959131","","MSCSB","14652504","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-0344235470" "Koga H.; Bahr R.; Myklebust G.; Engebretsen L.; Grund T.; Krosshaug T.","Koga, Hideyuki (12763750800); Bahr, Roald (7102647460); Myklebust, Grethe (7003895328); Engebretsen, Lars (7006820499); Grund, Thomas (36617240800); Krosshaug, Tron (55888189500)","12763750800; 7102647460; 7003895328; 7006820499; 36617240800; 55888189500","Estimating anterior tibial translation from model-based image-matching of a noncontact anterior cruciate ligament injury in professional football: A case report","2011","Clinical Journal of Sport Medicine","21","3","","271","274","3","52","10.1097/JSM.0b013e31821899ec","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955579589&doi=10.1097%2fJSM.0b013e31821899ec&partnerID=40&md5=a0c2004c499427e69a3b9971829e45c1","Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, 0806 Oslo, PO Box 4014 Ullevaal Stadion, Norway; Department Sport Equipment and Materials, Institute for Ergonomics, Technische Universität München, München, Germany","Koga H., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, 0806 Oslo, PO Box 4014 Ullevaal Stadion, Norway; Bahr R., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, 0806 Oslo, PO Box 4014 Ullevaal Stadion, Norway; Myklebust G., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, 0806 Oslo, PO Box 4014 Ullevaal Stadion, Norway; Engebretsen L., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, 0806 Oslo, PO Box 4014 Ullevaal Stadion, Norway; Grund T., Department Sport Equipment and Materials, Institute for Ergonomics, Technische Universität München, München, Germany; Krosshaug T., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, 0806 Oslo, PO Box 4014 Ullevaal Stadion, Norway","[No abstract available]","anterior cruciate ligament; anterior tibial translation; injury mechanism; knee kinematics; soccer; video analysis","Adult; Anterior Cruciate Ligament; Biomechanics; Humans; Image Processing, Computer-Assisted; Male; Soccer; Tibia; adult; anterior cruciate ligament injury; anterior cruciate ligament rupture; anterior tibial translation; arthroscopic surgery; article; athlete; case report; football; human; kinematics; knee arthroscopy; male; model; model based image matching; nuclear magnetic resonance imaging; priority journal; sport injury; three dimensional imaging; tibia; videorecording","Olsen O.-E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, American Journal of Sports Medicine, 32, 4, pp. 1002-1012, (2004); Krosshaug T., Nakamae A., Boden B.P., Engebretsen L., Smith G., Slauterbeck J.R., Hewett T.E., Bahr R., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, American Journal of Sports Medicine, 35, 3, pp. 359-367, (2007); Krosshaug T., Nakamae A., Boden B., Engebretsen L., Smith G., Slauterbeck J., Hewett T.E., Bahr R., Estimating 3D joint kinematics from video sequences of running and cutting maneuvers-assessing the accuracy of simple visual inspection, Gait and Posture, 26, 3, pp. 378-385, (2007); Krosshaug T., Bahr R., A model-based image-matching technique for three-dimensional reconstruction of human motion from uncalibrated video sequences, Journal of Biomechanics, 38, 4, pp. 919-929, (2005); Krosshaug T., Slauterbeck J.R., Engebretsen L., Et al., Biomechanical analysis of anterior cruciate ligament injury mechanisms: Three-dimensional motion reconstruction from video sequences, Scand J Med Sci Sports, 17, pp. 508-519, (2007); Koga H., Nakamae A., Shima Y., Et al., Mechanisms for noncontact anterior cruciate ligament injuries: Knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, pp. 2218-2225, (2010); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, Journal of Biomechanical Engineering, 105, 2, pp. 136-144, (1983); Meyer E.G., Haut R.C., Anterior cruciate ligament injury induced by internal tibial torsion or tibiofemoral compression, J Biomech, 41, pp. 3377-3383, (2008); Matsumoto H., Suda Y., Otani T., Niki Y., Seedhom B.B., Fujikawa K., Roles of the anterior cruciate ligament and the medial collateral ligament in preventing valgus instability, Journal of Orthopaedic Science, 6, 1, pp. 28-32, (2001)","H. Koga; Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, 0806 Oslo, PO Box 4014 Ullevaal Stadion, Norway; email: koga-z@rg7.so-net.ne.jp","","","15363724","","CJSME","21487293","English","Clin. J. Sport Med.","Article","Final","","Scopus","2-s2.0-79955579589" "Nilstad A.; Andersen T.E.; Kristianslund E.; Bahr R.; Myklebust G.; Steffen K.; Krosshaug T.","Nilstad, Agnethe (36473805800); Andersen, Thor Einar (7201524414); Kristianslund, Eirik (57645843600); Bahr, Roald (7102647460); Myklebust, Grethe (7003895328); Steffen, Kathrin (18435250300); Krosshaug, Tron (55888189500)","36473805800; 7201524414; 57645843600; 7102647460; 7003895328; 18435250300; 55888189500","Physiotherapists can identify female football players with high knee valgus angles during vertical drop jumps using real- Time observational screening","2014","Journal of Orthopaedic and Sports Physical Therapy","44","5","","358","365","7","58","10.2519/jospt.2014.4969","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84903942783&doi=10.2519%2fjospt.2014.4969&partnerID=40&md5=a89b059572db1a0368ea919976e06445","Department of Sports Medicine, Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, PB 4014 Ullevål Stadion, Norway","Nilstad A., Department of Sports Medicine, Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, PB 4014 Ullevål Stadion, Norway; Andersen T.E., Department of Sports Medicine, Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, PB 4014 Ullevål Stadion, Norway; Kristianslund E., Department of Sports Medicine, Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, PB 4014 Ullevål Stadion, Norway; Bahr R., Department of Sports Medicine, Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, PB 4014 Ullevål Stadion, Norway; Myklebust G., Department of Sports Medicine, Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, PB 4014 Ullevål Stadion, Norway; Steffen K., Department of Sports Medicine, Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, PB 4014 Ullevål Stadion, Norway; Krosshaug T., Department of Sports Medicine, Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, PB 4014 Ullevål Stadion, Norway","STUDY DESIGN: Clinical measurement, controlled laboratory study. OBJECTIVES: To assess the relationships among real- Time observational screening of frontal plane knee control and knee valgus angles and abduction moments calculated from 3-D motion analysis during a vertical drop jump. A secondary purpose was to investigate interrater agreement for 3 independent physiotherapists. BACKGROUND: Current approaches to screen for anterior cruciate ligament injury risk are based on complex biomechanical analyses or 2-dimensional video reviews. There is a need for simple and efficient, low-cost screening methods. METHODS: Sixty Norwegian elite female football (soccer) players performed a vertical dropjump task. Using real- Time observational screening, 3 physiotherapists independently scored each participant?fs frontal plane knee control as good, reduced, or poor, based on specific criteria. Screening test scores were correlated to frontal plane knee kinematics and kinetics using 3-D motion analysis. Interrater agreement was determined using kappa correlation coefficients. RESULTS: Knee valgus angles differed significantly among players rated as having poor, reduced, or good knee control (10.3° ± 3.4°, 5.4° ± 4.1°, and 1.9° ± 4.3°, respectively). The correlation between the observation test scores and valgus angles was moderate for all raters (0.54-0.60, P≤001), but the observation scores correlated poorly with abduction moments (0.09- 0.11, P>05). The highest discriminative accuracy was found for knee valgus angles across all raters (area under the receiver-operating-characteristic curve, 0.85-0.89). The interrater agreement between the physiotherapists was substantial to almost perfect, with percentage agreement and kappa coefficients ranging from 70% to 95% and 0.52 to 0.92, respectively. CONCLUSION: Physiotherapists can reliably identify female athletes with high knee valgus angles in a vertical drop-jump landing using real- Time observational screening. Copyright © 2014 Journal of Orthopaedic & Sports Physical Therapy®.","Anterior cruciate ligament (ACL); Injury risk; Interrater agreement; Motion analysis; Real- Time assessment","Adult; Anterior Cruciate Ligament; Biomechanical Phenomena; Female; Humans; Knee Injuries; Knee Joint; Observer Variation; Physical Therapists; Risk Assessment; Soccer; Task Performance and Analysis; Young Adult; adult; anterior cruciate ligament; biomechanics; female; human; knee; Knee Injuries; observer variation; pathophysiology; physiotherapist; procedures; risk assessment; soccer; task performance; young adult","Ageberg E., Bennell K.L., Hunt M.A., Simic M., Roos E.M., Creaby M.W., Validity and inter-rater reliability of medio-lateral knee motion observed during a single-limb mini squat, BMC Musculoskelet Disord, 11, (2010); Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A13-year review, Am J Sports Med, 33, pp. 524-530, (2005); Altman D.G., Some common problems in medical research, Practical Statistics for Medical Research, pp. 396-439, (1991); Benoit D.L., Ramsey D.K., Lamontagne M., Xu L., Wretenberg P., Renstrom P., Effect of skin movement artifact on knee kinematics during gait and cutting motions measured in vivo, Gait Posture, 24, pp. 152-164, (2006); Boden B.P., Dean G.S., Feagin Jr. J.A., Garrett Jr. W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Chiari L., Della C.U., Leardini A., Cappozzo A., Human movement analysis using stereophotogrammetry. Part 2: Instrumental errors, Gait Posture, 21, pp. 197-211, (2005); Chmielewski T.L., Hodges M.J., Horodyski M., Bishop M.D., Conrad B.P., Tillman S.M., Investigation of clinician agreement in evaluating movement quality during unilateral lower extremity functional tasks: Acomparison of 2 rating methods, J Orthop Sports Phys Ther, 37, pp. 122-129, (2007); Davis III R.B., Ounpuu S., Tyburski D., Gage J.R., A gait analysis data collection and reduction technique, Hum Mov Sci, 10, pp. 575-587, (1991); Della C.U., Leardini A., Chiari L., Cappozzo A., Human movement analysis using stereophotogrammetry. 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Nilstad; Department of Sports Medicine, Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, PB 4014 Ullevål Stadion, Norway; email: agnethe.nilstad@nih.no","","Movement Science Media","01906011","","JOSPD","24730435","English","J. Orthop. Sports Phys. Ther.","Article","Final","","Scopus","2-s2.0-84903942783" "Dos'Santos T.; McBurnie A.; Donelon T.; Thomas C.; Comfort P.; Jones P.A.","Dos'Santos, Thomas (57170712800); McBurnie, Alistair (57209068775); Donelon, Thomas (57209076560); Thomas, Christopher (56754565800); Comfort, Paul (26767602800); Jones, Paul A. (55308526600)","57170712800; 57209068775; 57209076560; 56754565800; 26767602800; 55308526600","A qualitative screening tool to identify athletes with ‘high-risk’ movement mechanics during cutting: The cutting movement assessment score (CMAS)","2019","Physical Therapy in Sport","38","","","152","161","9","53","10.1016/j.ptsp.2019.05.004","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85066426205&doi=10.1016%2fj.ptsp.2019.05.004&partnerID=40&md5=e578986cbe403fe103df13ab23001bd7","Human Performance Laboratory, Directorate of Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom; Section of Sport and Exercise Sciences, Canterbury Christ Church University, Kent, United Kingdom","Dos'Santos T., Human Performance Laboratory, Directorate of Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom; McBurnie A., Human Performance Laboratory, Directorate of Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom; Donelon T., Section of Sport and Exercise Sciences, Canterbury Christ Church University, Kent, United Kingdom; Thomas C., Human Performance Laboratory, Directorate of Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom; Comfort P., Human Performance Laboratory, Directorate of Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom; Jones P.A., Human Performance Laboratory, Directorate of Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom","Objective: To assess the validity of the cutting movement assessment score (CMAS) to estimate the magnitude of peak knee abduction moments (KAM) against three-dimensional (3D) motion analysis, while comparing whole-body kinetics and kinematics between subjects of low (bottom 33%) and high CMASs (top 33%). Design: Cross-sectional study. Setting: Laboratory. Participants: Forty-one participants (soccer, rugby, netball, and cricket). Main outcome measures: Association between peak KAM and CMAS during a 90° cut. Comparison of 3D whole-body kinetics and kinematics between subjects with low (bottom 33%) and high CMASs (top 33%). Results: A very large significant relationship (ρ = 0.796, p < 0.001) between CMAS and peak KAM was observed. Subjects with higher CMASs displayed higher-risk cutting postures, including greater peak knee abduction angles, internal foot progression angles, and lateral foot plant distances (p ≤ 0.032, effect size = 0.83–1.64). Additionally, greater cutting multiplanar knee joint loads (knee flexion, internal rotation, and abduction moments) were demonstrated by subjects with higher CMASs compared to lower (p ≤ 0.047, effect size = 0.77–2.24). Conclusion: The CMAS is a valid qualitative screening tool for evaluating cutting movement quality and is therefore a potential method to identify athletes who generate high KAMs and “high-risk” side-step cutting mechanics. © 2019 Elsevier Ltd","Anterior cruciate ligament; Injury screening; Injury-risk profile; Knee abduction moment","Anterior Cruciate Ligament Injuries; Athletes; Biomechanical Phenomena; Cross-Sectional Studies; Female; Humans; Imaging, Three-Dimensional; Knee Joint; Male; Movement; Young Adult; adult; analysis; Article; athlete; comparative study; controlled study; cross-sectional study; cutting movement; cutting movement assessment score; female; high risk population; human; internal foot progression angle; interrater reliability; intrarater reliability; kinematics; kinetics; knee abduction angle; knee abduction moment; knee function; knee internal rotation; knee joint load; lateral foot plant distance; male; mechanics; motion analysis; movement (physiology); musculoskeletal disease assessment; musculoskeletal system parameters; priority journal; validity; whole body kinetics; young adult; anterior cruciate ligament injury; athlete; biomechanics; diagnostic imaging; knee; movement (physiology); pathophysiology; physiology; procedures; three dimensional imaging","Alenezi F., Herrington L., Jones P., Jones R., Relationships between lower limb biomechanics during single leg squat with running and cutting tasks: A preliminary investigation, British Journal of Sports Medicine, 48, pp. 560-561, (2014); Almangoush A., Herrington L., Jones R., A preliminary reliability study of a qualitative scoring system of limb alignment during single leg squat, Physical Therapy and Rehabilitation, 1, 2, (2014); Bahr R., Why screening tests to predict injury do not work and probably never will: A critical review, British Journal of Sports Medicine, 50, pp. 776-780, (2016); Bates N.A., Myer G.D., Shearn J.T., Hewett T.E., Anterior cruciate ligament biomechanics during robotic and mechanical simulations of physiologic and clinical motion tasks: A systematic review and meta-analysis, Clinical Biomechanics, 30, pp. 1-13, (2015); 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Weir G., Alderson J., Smailes N., Elliott B., Donnelly C., A reliable video-based ACL injury screening tool for female team sport athletes, International Journal of Sports Medicine, 40, pp. 191-199, (2019); Wheeler K.W., Askew C.D., Sayers M.G., Effective attacking strategies in rugby union, European Journal of Sport Science, 10, pp. 237-242, (2010); Winter D.A., Biomechanics and motor control of human motion, (1990); Winter D.A., Biomechanics and motor control of human movement, (2009); Zhang S.-N., Bates B.T., Dufek J.S., Contributions of lower extremity joints to energy dissipation during landings, Medicine & Science in Sports & Exercise, 32, pp. 812-819, (2000)","T. Dos'Santos; Salford, Allerton Building, Frederick Road Campus, M6 6PU, United Kingdom; email: t.dossantos@edu.salford.ac.uk","","Churchill Livingstone","1466853X","","PTSHB","31153108","English","Phys. Ther. Sport","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85066426205" "Cortes N.; Greska E.; Kollock R.; Ambegaonkar J.; Onate J.A.","Cortes, Nelson (23033673100); Greska, Eric (39961575800); Kollock, Roger (24080964000); Ambegaonkar, Jatin (12805539400); Onate, James A. (7004831141)","23033673100; 39961575800; 24080964000; 12805539400; 7004831141","Changes in lower extremity biomechanics due to a short-term fatigue protocol","2013","Journal of Athletic Training","48","3","","306","313","7","55","10.4085/1062-6050-48.2.03","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878373439&doi=10.4085%2f1062-6050-48.2.03&partnerID=40&md5=4ea64f78673c1bf11d57ba6d1b25a59e","Sports Medicine Assessment, Research and Testing (SMART) Laboratory, George Mason University, Manassas, VA 20110, 10900 University Boulevard, MS 4E5, United States; Human Movement Sciences, Old Dominion University, Norfolk, VA, United States; School of Allied Medical Professions, Ohio State University, Columbus, OH, United States","Cortes N., Sports Medicine Assessment, Research and Testing (SMART) Laboratory, George Mason University, Manassas, VA 20110, 10900 University Boulevard, MS 4E5, United States; Greska E., Human Movement Sciences, Old Dominion University, Norfolk, VA, United States; Kollock R., Human Movement Sciences, Old Dominion University, Norfolk, VA, United States; Ambegaonkar J., Sports Medicine Assessment, Research and Testing (SMART) Laboratory, George Mason University, Manassas, VA 20110, 10900 University Boulevard, MS 4E5, United States; Onate J.A., School of Allied Medical Professions, Ohio State University, Columbus, OH, United States","Context: Noncontact anterior cruciate ligament injury has been reported to occur during the later stages of a game when fatigue is most likely present. Few researchers have focused on progressive changes in lower extremity biomechanics that occur throughout fatiguing. Objective: To evaluate the effects of a sequential fatigue protocol on lower extremity biomechanics during a sidestepcutting task (SS). Design: Controlled laboratory study. Setting: Laboratory. Patients or Other Participants: Eighteen uninjured female collegiate soccer players (age = 19.2 ± 0.9 years, height = 1.66 ± 0.5 m, mass = 61.6 ± 5.1 kg) volunteered. Intervention(s): The independent variable was fatigue level, with 3 levels (prefatigue, 50% fatigue, and 100% fatigue). Using 3-dimensional motion capture, we assessed lower extremity biomechanics during the SS. Participants alternated between a fatigue protocol that solicited different muscle groups and mimicked actual sport situations and unanticipated SS trials. The process was repeated until fatigue was attained. Main Outcome Measure(s): Dependent variables were hipand knee-flexion and abduction angles and internal moments measured at initial contact and peak stance and defined as measures obtained between 0% and 50% of stance phase. Results: Knee-flexion angle decreased from prefatigue (-178 ± 5°) to 50% fatigue (-168 ± 6°) and to 100% fatigue (-148 ± 4°) (F2,34 = 5.112, P = .004). Knee flexion at peak stance increased from prefatigue (-52.98 ± 5.6°) to 50% fatigue (-56.18 ± 7.2°) but decreased from 50% to 100% fatigue (-50.58 ± 7.1°) (F 2,34 = 8.282, P = 001). Knee-adduction moment at peak stance increased from prefatigue (0.49 ± 0.23 Nm/kgm) to 50% fatigue (0.55 ± 0.25 Nm/kgm) but decreased from 50% to 100% fatigue (0.37 ± 0.24) (F2,34 = 3.755, P = 03). Hip-flexion angle increased from prefatigue (45.48 ± 10.9°) to 50% fatigue (46.28 ± 11.2°) but decreased from 50% to 100% fatigue (40.98 ± 11.3°) (F 2,34 = 6.542, P = .004). Hip flexion at peak stance increased from prefatigue (49.88 ± 9.9°) to 50% fatigue (52.98 ± 12.1°) but decreased from 50% to 100% fatigue (46.38 ± 12.9°) (F 2,34 = 8.639, P = 001). Hip-abduction angle at initial contact decreased from prefatigue (-13.88 ± 6.6°) to 50% fatigue (-9.18 ± 6.5°) and to 100% fatigue (-7.88 ± 6.5°) (F 2,34 = 11.228, P < .001). Hip-adduction moment decreased from prefatigue (0.14 ± 0.13 Nm/kgm) to 50% fatigue (0.08 ± 0.13 Nm/kgm) and to 100% fatigue (0.06 ± 0.05 Nm/kg) (F2,34 = 5.767, P = .007). Conclusions: The detrimental effects of fatigue on sagittal and frontal mechanics of the hip and knee were visible at 50% of the participants' maximal fatigue and became more marked at 100% fatigue. Anterior cruciate ligament injury-prevention programs should emphasize feedback on proper mechanics throughout an entire practice and not only at the beginning of practice. © by the National Athletic Trainers' Association, Inc.","Anterior cruciate ligament; Fatiguing; Kinematics; Kinetics; Knee","Biomechanics; Fatigue; Female; Hip Joint; Humans; Knee Joint; Leg Injuries; Lower Extremity; Soccer; Young Adult; adult; article; biomechanics; fatigue; female; hip; human; injury; knee; leg; leg injury; pathophysiology; physiology; soccer","Borotikar B.S., Newcomer R., Koppes R., McLean S.G., Combined effects of fatigue and decision making on female lower limb landing postures: Central and peripheral contributions to ACL injury risk, Clinical Biomechanics, 23, 1, pp. 81-92, (2008); McLean S.G., Samorezov J.E., Fatigue-induced ACL injury risk stems from a degradation in central control, Med Sci Sports Exerc, 41, 8, pp. 1661-1672, (2009); Giza E., Mithofer K., Farrell L., Zarins B., Gill T., Injuries in women's professional soccer, British Journal of Sports Medicine, 39, 4, pp. 212-216, (2005); 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Yu B., Garrett W.E., Mechanisms of non-contact ACL injuries, British Journal of Sports Medicine, 41, SUPPL. 1, (2007); Koga H., Nakamae A., Shima Y., Et al., Mechanisms for noncontact anterior cruciate ligament injuries: Knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med., 38, 11, pp. 2218-2225, (2010); Krosshaug T., Nakamae A., Boden B.P., Engebretsen L., Smith G., Slauterbeck J.R., Hewett T.E., Bahr R., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, American Journal of Sports Medicine, 35, 3, pp. 359-367, (2007); Kernozek T.W., Torry M.R., Iwasaki M., Gender differences in lower extremity landing mechanics caused by neuromuscular fatigue, American Journal of Sports Medicine, 36, 3, pp. 554-565, (2008); Landry S.C., McKean K.A., Hubley-Kozey C.L., Stanish W.D., Deluzio K.J., Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated side-cut maneuver, American Journal of Sports Medicine, 35, 11, pp. 1888-1900, (2007); 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Nyland J.A., Shapiro R., Caborn D.N.M., Nitz A.J., Malone T.R., The effect of quadriceps femoris, hamstring, and placebo eccentric fatigue on knee and ankle dynamics during crossover cutting, Journal of Orthopaedic and Sports Physical Therapy, 25, 3, pp. 171-184, (1997); Cerulli G., Caraffa A., Cerulli G., Liti A., Benoit D.L., Lamontagne M., In vivo anterior cruciate ligament strain behaviour during a rapid deceleration movement: Case report, Knee Surgery, Sports Traumatology, Arthroscopy, 11, 5, pp. 307-311, (2003); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A.M., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, Journal of Orthopaedic Research, 13, 6, pp. 930-935, (1995); Markolf K.L., Gorek J.F., Kabo J.M., Shapiro M.S., Direct measurement of resultant forces in the anterior cruciate ligament. 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McCloy research lecture: knowledge is more than we can talk about: Implicit learning in motor skill acquisition, Research Quarterly for Exercise and Sport, 69, 2, pp. 104-110, (1998)","N. Cortes; Sports Medicine Assessment, Research and Testing (SMART) Laboratory, George Mason University, Manassas, VA 20110, 10900 University Boulevard, MS 4E5, United States; email: ncortes@gmu.edu","","","10626050","","JATTE","23675789","English","J. Athl. Train.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-84878373439" "Greco C.C.; Da Silva W.L.; Camarda S.R.A.; Denadai B.S.","Greco, Camila C. (7101809205); Da Silva, Wendell L. (55322201100); Camarda, Sérgio R.A. (26022772000); Denadai, Benedito S. (6701813562)","7101809205; 55322201100; 26022772000; 6701813562","Fatigue and rapid hamstring/quadriceps force capacity in professional soccer players","2013","Clinical Physiology and Functional Imaging","33","1","","18","23","5","40","10.1111/j.1475-097X.2012.01160.x","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870805498&doi=10.1111%2fj.1475-097X.2012.01160.x&partnerID=40&md5=b1ee69f90e1981d4af9a5de9189796b9","Human Performance Laboratory, São Paulo State University UNESP, Rio Claro, SP, Brazil","Greco C.C., Human Performance Laboratory, São Paulo State University UNESP, Rio Claro, SP, Brazil; Da Silva W.L., Human Performance Laboratory, São Paulo State University UNESP, Rio Claro, SP, Brazil; Camarda S.R.A., Human Performance Laboratory, São Paulo State University UNESP, Rio Claro, SP, Brazil; Denadai B.S., Human Performance Laboratory, São Paulo State University UNESP, Rio Claro, SP, Brazil","The aim of this study was to investigate the effect of fatigue induced by an exhaustive laboratory-based soccer-specific exercise on different hamstrings/quadriceps (H:Q) ratios of soccer players. Twenty-two male professional soccer players (23·1 ± 3·4 year) performed maximal eccentric (ecc) and concentric (con) contractions for knee extensors (KE) and flexors (KF) at 60° s-1 and 180° s-1 to assess conventional (Hcon:Qcon) and functional (Hecc:Qcon) ratios. Additionally, they performed maximal voluntary isometric contraction for KE and KF, from which the maximal muscle strength, rate of force development (RFD) and RFD H:Q strength ratio (RFDH:Q) were extracted. Thereafter, subjects were performed an exhaustive laboratory-based soccer-specific exercise and a posttest similar to the pretest. There was significant reduction in Hcon:Qcon (0·60 ± 0·06 versus 0·58 ± 0·06, P<0·05) and in Hecc:Qcon (1·29 ± 0·2 versus 1·16 ± 0·2, P<0·01) after the soccer-specific exercise. However, no significant difference between Pre and Post exercise conditions was found for RFDH:Q at 0-50 (0·53 ± 0·23 versus 0·57 ± 0·24, P>0·05) and 0-100 ms (0·53 ± 0·17 versus 0·55 ± 0·17, P>0·05). In conclusion, H:Q strength ratios based on peak force values are more affected by fatigue than RFDH:Q obtained during early contraction phase. Thus, fatigue induced by soccer-specific intermittent protocol seems not reduce the potential for knee joint stabilization during the initial phase of voluntary muscle contraction. copy; 2012 Scandinavian Society of Clinical Physiology and Nuclear Medicine.","Injury; Isokinetic; Power; Strength; Torque","Adult; Analysis of Variance; Biomechanics; Exercise Test; Humans; Isometric Contraction; Knee Joint; Male; Muscle Fatigue; Muscle Strength; Physical Endurance; Quadriceps Muscle; Range of Motion, Articular; Soccer; Time Factors; Torque; Young Adult; adult; article; athlete; exercise; exhaustion; fatigue; hamstring; human; human experiment; isokinetic exercise; knee function; laboratory; male; muscle isometric contraction; muscle strength; normal human; priority journal; quadriceps femoris muscle; torque","Aagaard P., Simonsen E.B., Andersen J.L., Magnusson P., Dyhre-Poulsen P., Increased rate of force development and neural drive of human skeletal muscle following resistance training, J Appl Physiol, 93, pp. 1318-1326, (2002); Andersen L.L., Aagaard P., Influence of maximal muscle strength and intrinsic muscle contractile properties on contractile rate of force development, Eur J Appl Physiol, 96, pp. 46-52, (2006); Camarda S.R.A., Denadai B.S., Does muscle imbalance affect fatigue after soccer specific intermittent protocol?, J Sci Med Sport, 15, pp. 355-360, (2012); Coombs R., Garbutt G., Developments in the use of the hamstring/quadriceps ratio for the assessment of muscle balance, J Sports Sci Med, 1, pp. 56-62, (2002); Croisier J.L., Ganteaume S., Binet J., Genty M., Ferret J.M., Strength imbalances and prevention of hamstring injury in professional soccer players: a prospective study, Am J Sports Med, 36, pp. 1469-1475, (2008); Delextrat A., Gregory J., Cohen D., The use of the functional H:Q ratio to assess fatigue in soccer, Int J Sports Med, 31, pp. 192-197, (2010); Drust B., Reilly T., Cable N.T., Physiological responses to laboratory-based soccer-specific intermittent and continuous exercise, J Sports Sci, 18, pp. 885-892, (2000); 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Sole G., Hamren J., Milosavljevic S., Nicholson H., Sullivan J., Test-retest reliability of isokinetic knee extension and flexion, Arch Phys Med Rehabil, 88, pp. 626-631, (2007); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer: an update, Sports Med, 35, pp. 501-536, (2005); Thorlund J.B., Michalsik L.B., Madsen K., Aagaard P., Acute fatigue-induced changes in muscle mechanical properties and neuromuscular activity in elite handball players following a handball match, Scand J Med Sci Sports, 18, pp. 462-472, (2008); Thorlund J.B., Aagaard P., Madsen K., Rapid muscle force capacity changes after soccer match play, Int J Sports Med, 30, pp. 273-278, (2009); Verrall G.M., Slavotinek J.P., Barnes P.G., Fon G.T., Spriggins A.J., Clinical risk factors for hamstring muscle strain injury: a prospective study with correlation of injury by magnetic resonance imaging, Br J Sports Med, 35, pp. 435-439, (2001); Williams K., Biomechanics of running, Exerc Sports Sci Rev, 13, pp. 389-441, (1985); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., The football association medical research programme: an audit of injuries in professional football: analysis of hamstring injuries, Br J Sports Med, 38, pp. 36-41, (2004); Zebis M.K., Andersen L.L., Ellingsgaard H., Aagaard P., Rapid hamstring/quadriceps force capacity in male vs. female elite soccer players, J Strength Cond Res, 25, pp. 1989-1993, (2011)","B.S. Denadai; Human Performance Laboratory, UNESP, CEP- 13506-900, Rio Claro, SP, Av. 24A, 1515, Bela Vista, Brazil; email: bdenadai@rc.unesp.br","","","1475097X","","CPFIC","23216761","English","Clin. Physiol. Funct. Imaging","Article","Final","","Scopus","2-s2.0-84870805498" "Mendiguchia J.; Martinez-Ruiz E.; Morin J.B.; Samozino P.; Edouard P.; Alcaraz P.E.; Esparza-Ros F.; Mendez-Villanueva A.","Mendiguchia, J. (16239420700); Martinez-Ruiz, E. (55993871800); Morin, J.B. (55917329600); Samozino, P. (14024773800); Edouard, P. (16506291300); Alcaraz, P.E. (24502780500); Esparza-Ros, F. (54585151600); Mendez-Villanueva, A. (15035651800)","16239420700; 55993871800; 55917329600; 14024773800; 16506291300; 24502780500; 54585151600; 15035651800","Effects of hamstring-emphasized neuromuscular training on strength and sprinting mechanics in football players","2015","Scandinavian Journal of Medicine and Science in Sports","25","6","","e621","e629","8","60","10.1111/sms.12388","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84948717637&doi=10.1111%2fsms.12388&partnerID=40&md5=5876e6040d9bc5b572439d4d68c951ed","Department of Physical Therapy, ZENTRUM Rehab and Performance Center, Barañain, Spain; Chair of Sports Traumatology, Catholic University of San Antonio, Murcia, Spain; Laboratory of Exercise Physiology, University of Saint-Etienne, Saint-Etienne, France; Laboratory of Exercise Physiology, University of Savoie, Le Bourget du Lac, France; Department of Physical Medicine and Rehabilitation, Saint-Etienne University Hospital, Saint-Etienne, France; Laboratory of Exercise Physiology (EA 4338), University of Lyon, Lyon, France; Research Center for High Performance Sport, Catholic University of San Antonio, Murcia, Spain; Aspire, Academy for Sports Excellence, Performance Enhancement and Talent Identification Section, Doha, Qatar","Mendiguchia J., Department of Physical Therapy, ZENTRUM Rehab and Performance Center, Barañain, Spain; Martinez-Ruiz E., Chair of Sports Traumatology, Catholic University of San Antonio, Murcia, Spain; Morin J.B., Laboratory of Exercise Physiology, University of Saint-Etienne, Saint-Etienne, France; Samozino P., Laboratory of Exercise Physiology, University of Savoie, Le Bourget du Lac, France; Edouard P., Laboratory of Exercise Physiology, University of Saint-Etienne, Saint-Etienne, France, Department of Physical Medicine and Rehabilitation, Saint-Etienne University Hospital, Saint-Etienne, France, Laboratory of Exercise Physiology (EA 4338), University of Lyon, Lyon, France; Alcaraz P.E., Research Center for High Performance Sport, Catholic University of San Antonio, Murcia, Spain; Esparza-Ros F., Chair of Sports Traumatology, Catholic University of San Antonio, Murcia, Spain; Mendez-Villanueva A., Aspire, Academy for Sports Excellence, Performance Enhancement and Talent Identification Section, Doha, Qatar","The objective of this study was to examine the effects of a neuromuscular training program combining eccentric hamstring muscle strength, plyometrics, and free/resisted sprinting exercises on knee extensor/flexor muscle strength, sprinting performance, and horizontal mechanical properties of sprint running in football (soccer) players. Sixty footballers were randomly assigned to an experimental group (EG) or a control group (CG). Twenty-seven players completed the EG and 24 players the CG. Both groups performed regular football training while the EG performed also a neuromuscular training during a 7-week period. The EG showed a small increases in concentric quadriceps strength (ES=0.38/0.58), a moderate to large increase in concentric (ES=0.70/0.74) and eccentric (ES=0.66/0.87) hamstring strength, and a small improvement in 5-m sprint performance (ES=0.32). By contrast, the CG presented lower magnitude changes in quadriceps (ES=0.04/0.29) and hamstring (ES=0.27/0.34) concentric muscle strength and no changes in hamstring eccentric muscle strength (ES=-0.02/0.11). Thus, in contrast to the CG (ES=-0.27/0.14), the EG showed an almost certain increase in the hamstring/quadriceps strength functional ratio (ES=0.32/0.75). Moreover, the CG showed small magnitude impairments in sprinting performance (ES=-0.35/-0.11). Horizontal mechanical properties of sprint running remained typically unchanged in both groups. These results indicate that a neuromuscular training program can induce positive hamstring strength and maintain sprinting performance, which might help in preventing hamstring strains in football players. © 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.","Football; Hamstring strength; Isokinetic; Soccer; Sprint biomechanics","Adolescent; Adult; Athletic Performance; Biomechanical Phenomena; Humans; Male; Muscle Strength; Physical Conditioning, Human; Plyometric Exercise; Quadriceps Muscle; Running; Soccer; Young Adult; adolescent; adult; athletic performance; biomechanics; controlled study; exercise; human; male; muscle strength; physiology; plyometrics; procedures; quadriceps femoris muscle; randomized controlled trial; running; soccer; young adult","Arnason A., Andersen T.E., Holme I., Engebretsen L., Bahr R., Prevention of hamstring strains in elite soccer: an intervention study, Scand J Med Sci Sports, 18, 1, pp. 40-48, (2008); Askling C., Karlsson J., Thorstensson A., Hamstring injury occurrence in elite soccer players after preseason strength training with eccentric overload, Scand J Med Sci Sports, 13, 4, pp. 244-250, (2003); Atkinson G., Batterham A.M., The use of ratios and percentage changes in sports medicine: time for a rethink?, Int J Sports Med, 33, 7, pp. 505-506, (2012); 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Hamner S.R., Delp S.L., Muscle contributions to fore-aft and vertical body mass center accelerations over a range of running speeds, J Biomech, 46, 4, pp. 780-787, (2013); Harrison A.J., Bourke G., The effect of resisted sprint training on speed and strength performance in male rugby players, J Strength Cond Res, 23, 1, pp. 275-283, (2009); Hopkins W.G., Marshall S.W., Batterham A.M., Hanin J., Progressive statistics for studies in sports medicine and exercise science, Med Sci Sports Exerc, 41, 1, pp. 3-13, (2009); Hunter J.P., Marshall R.N., McNair P.J., Relationships between ground reaction force impulse and kinematics of sprint-running acceleration, J Appl Biomech, 21, 1, pp. 31-43, (2005); Jacobs R., Bobbert M.F., van Ingen Schenau G.J., Mechanical output from individual muscles during explosive leg extensions: the role of biarticular muscles, J Biomech, 29, 4, pp. 513-523, (1996); Jacobs R., van Ingen Schenau G.J., Intermuscular coordination in a sprint push-off, J Biomech, 25, 9, pp. 953-965, (1992); 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Mendiguchia J., Samozino P., Martinez-Ruiz E., Brughelli M., Schmikli S., Morin J.B., Mendez-Villanueva A., Progression of mechanical properties during on-field sprint running after returning to sports from a hamstring muscle injury in soccer players, Int J Sports Med, (2014); Mjolsnes R., Arnason A., Osthagen T., Raastad T., Bahr R., A 10-week randomized trial comparing eccentric vs concentric hamstring strength training in well-trained soccer players, Scand J Med Sci Sports, 14, 5, pp. 311-317, (2004); Morin J.B., Edouard P., Samozino P., Technical ability of force application as a determinant factor of sprint performance, Med Sci Sports Exerc, 43, 9, pp. 1680-1688, (2011); Morin J.B., Jeannin T., Chevallier B., Belli A., Spring-mass model characteristics during sprint running: correlation with performance and fatigue-induced changes, Int J Sports Med, 27, 2, pp. 158-165, (2006); Novacheck T.F., The biomechanics of running, Gait Posture, 7, 1, pp. 77-95, (1998); Petersen J., Thorborg K., Nielsen M.B., Budtz-Jorgensen E., Holmich P., Preventive effect of eccentric training on acute hamstring injuries in men's soccer: a cluster-randomized controlled trial, Am J Sports Med, 39, 11, pp. 2296-2303, (2011); 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Thelen D.G., Chumanov E.S., Hoerth D.M., Best T.M., Swanson S.C., Li L., Young M., Heiderscheit B.C., Hamstring muscle kinematics during treadmill sprinting, Med Sci Sports Exerc, 37, 1, pp. 108-114, (2005); Tourny-Chollet C., Leroy D., Leger H., Beuret-Blanquart F., Isokinetic knee muscle strength of soccer players according to their position, Isokinet Exerc Sci, 8, 4, pp. 187-193, (2000); Tsang K.K., DiPasquale A.A., Improving the Q:H strength ratio in women using plyometric exercises, J Strength Cond Res, 25, 10, pp. 2740-2745, (2011); Weyand P.G., Sandell R.F., Prime D.N., Bundle M.W., The biological limits to running speed are imposed from the ground up, J Appl Physiol (1985), 108, 4, pp. 950-961, (2010); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., The Football Association Medical Research Programme: an audit of injuries in professional football - analysis of hamstring injuries, Br J Sports Med, 38, 1, pp. 36-41, (2004); Yu B., Queen R.M., Abbey A.N., Liu Y., Moorman C.T., Garrett W.E., Hamstring muscle kinematics and activation during overground sprinting, J Biomech, 41, 15, pp. 3121-3126, (2008)","J. Mendiguchia; Department of Physical Therapy, ZENTRUM Rehab and Performance Center, Barañain, Calle B Nave 23 (Polígono Barañain), 31010, Spain; email: jurdan24@hotmail.com","","","09057188","","SMSSE","25556888","English","Scand. J. Med. Sci. Sports","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84948717637" "Makris S.; Urgesi C.","Makris, Stergios (49662119400); Urgesi, Cosimo (9742147000)","49662119400; 9742147000","Neural underpinnings of superior action prediction abilities in soccer players","2015","Social Cognitive and Affective Neuroscience","10","3","","342","351","9","64","10.1093/scan/nsu052","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84907883823&doi=10.1093%2fscan%2fnsu052&partnerID=40&md5=fa83d1d435db2445177ee8cd5ce96469","Dipartimento di Scienze Umane, Universita degli Studi di Udine, Udine, Italy; Istituto di Ricovero e Cura a Carattere Scientifico 'E. Medea', Polo Friuli Venezia Giulia, San Vito al Tagliamento, Pordenone, Italy","Makris S., Dipartimento di Scienze Umane, Universita degli Studi di Udine, Udine, Italy; Urgesi C., Dipartimento di Scienze Umane, Universita degli Studi di Udine, Udine, Italy, Istituto di Ricovero e Cura a Carattere Scientifico 'E. Medea', Polo Friuli Venezia Giulia, San Vito al Tagliamento, Pordenone, Italy","The ability to form anticipatory representations of ongoing actions is crucial for effective interactions in dynamic environments. In sports, elite athletes exhibit greater ability than novices in predicting other players actions, mainly based on reading their body kinematics. This superior perceptual ability has been associated with a modulation of visual and motor areas by visual and motor expertise. Here, we investigated the causative role of visual and motor action representations in experts ability to predict the outcome of soccer actions. We asked expert soccer players (outfield players and goalkeepers) and novices to predict the direction of the ball after perceiving the initial phases of penalty kicks that contained or not incongruent body kinematics. During the task, we applied repetitive transcranial magnetic stimulation (rTMS) over the superior temporal sulcus (STS) and the dorsal premotor cortex (PMd). Results showed that STS-rTMS disrupted performance in both experts and novices, especially in those with greater visual expertise (i.e. goalkeepers). Conversely, PMd-rTMS impaired performance only in expert players (i.e. outfield players and goalkeepers), who exhibit strong motor expertise into facing domain-specific actions in soccer games. These results provide causative evidence of the complimentary functional role of visual and motor action representations in experts action prediction. © The Author 2014.","Action prediction; Motor expertise; Premotor cortex; Superior temporal sulcus; Transcranial magnetic stimulation","Adolescent; Adult; Anticipation, Psychological; Athletic Performance; Biomechanical Phenomena; Female; Humans; Male; Motor Cortex; Photic Stimulation; Psychomotor Performance; Signal Detection, Psychological; Soccer; Temporal Lobe; Transcranial Magnetic Stimulation; User-Computer Interface; Visual Cortex; Visual Perception; Young Adult; adolescent; adult; anticipation; athletic performance; biomechanics; computer interface; female; human; male; motor cortex; perceptive discrimination; photostimulation; physiology; psychology; psychomotor performance; soccer; temporal lobe; transcranial magnetic stimulation; vision; visual cortex; young adult","Abernethy B., Zawi K., Pickup of essential kinematics underpins expert perception of movement patterns, Journal of Motor Behavior, 39, pp. 353-367, (2007); Abernethy B., Zawi K., Jackson R.C., Expertise and attunement to kinematic constraints, Perception, 37, pp. 931-948, (2008); Abreu A.M., Macaluso E., Azevedo R., Cesari P., Urgesi C., Aglioti S.M., Action anticipation beyond the action observation network: an fMRI study in expert basketball players, The European Journal of Neuroscience, 35, pp. 1646-1654, (2012); Aglioti S.M., Cesari P., Romani M., Urgesi C., Action anticipation and motor resonance in elite basketball players, Nature Neuroscience, 11, pp. 1109-1116, (2008); Alaerts K., Heremans E., Swinnen S.P., Wenderoth N., How are observed actions mapped to the observer's motor system? 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A Neurochronometrics of Mind, (2003); Wassermann E.M., Risk and safety of repetitive transcranial magnetic stimulation: report and suggested guidelines from the International Workshop on the Safety of Repetitive Transcranial Magnetic Stimulation, June 5-7, 1996, Electroencephalography Clinical Neurophysiology, 108, pp. 1-16, (1998); Wiggett A.J., Hudson M., Clifford A., Tipper S.P., Downing P.E., Doing, seeing, or both: effects of learning condition on subsequent action perception, Society for Neuroscience, 7, 6, pp. 606-621, (2012); Wilson M., Knoblich G., The case for motor involvement in perceiving conspecifics, Psychological Bulletin, 131, (2005); Zago M., Lacquaniti F., Cognitive, perceptual and action-oriented representations of falling objects, Neuropsychologia, 43, pp. 178-188, (2005)","S. Makris; Dipartimento di Scienzie Umane, Universita degli Studi di Udine, Udine, Via Margreth 3, I-33100, Italy; email: stergios.makris@uniud.it","","Oxford University Press","17495016","","","24771282","English","Soc. Cogn. Affect. Neurosci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84907883823" "Cortes N.; Quammen D.; Lucci S.; Greska E.; Onate J.","Cortes, Nelson (23033673100); Quammen, David (55162482000); Lucci, Shawn (49863825100); Greska, Eric (39961575800); Onate, James (7004831141)","23033673100; 55162482000; 49863825100; 39961575800; 7004831141","A functional agility short-term fatigue protocol changes lower extremity mechanics","2012","Journal of Sports Sciences","30","8","","797","805","8","53","10.1080/02640414.2012.671528","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84859593616&doi=10.1080%2f02640414.2012.671528&partnerID=40&md5=422c85b8ab30b2dd43cd6f0dcdb107f0","George Mason University, Sports Medicine Assessment Research and Testing Laboratory, School of Recreation, Health, and Tourism, Manassas, 20110, 10900 University Blvd. MS 4E5, United States; Human Movement Sciences, Old Dominion University, United States; School Of Allied Medical Professions, The Ohio State University, United States","Cortes N., George Mason University, Sports Medicine Assessment Research and Testing Laboratory, School of Recreation, Health, and Tourism, Manassas, 20110, 10900 University Blvd. MS 4E5, United States; Quammen D., Human Movement Sciences, Old Dominion University, United States; Lucci S., Human Movement Sciences, Old Dominion University, United States; Greska E., Human Movement Sciences, Old Dominion University, United States; Onate J., School Of Allied Medical Professions, The Ohio State University, United States","The purpose of this study was to evaluate the effects of a functional agility fatigue protocol on lower extremity biomechanics between two unanticipated tasks (stop-jump and sidestep). The subjects consisted of fifteen female collegiate soccer athletes (19±0.7 years, 1.67±0.1 m, 61.7±8 kg) free of lower extremity injury. Participants performed five trials of stop-jump and sidestep tasks. A functional short-term agility protocol was performed, and immediately following participants repeated the unanticipated running tasks. Lower extremity kinematic and kinetic values were obtained pre and post fatigue. Repeated measures analyses of variance were conducted for each dependent variable with an alpha level set at 0.05. Knee position post-fatigue had increased knee internal rotation (11.4±7.5° vs. 7.9±6.5° p=0.011) than pre-fatigue, and a decreased knee flexion angle (-36.6±6.2° vs. -40.0±6.3°, p=0.003), as well as hip position post-fatigue had decreased hip flexion angle (35.5±8.7° vs. 43.2±9.5°, p=0.002). A quick functional fatigue protocol altered lower extremity mechanics of Division I collegiate soccer athletes during landing tasks. Proper mechanics should be emphasized from the beginning of practice/game to aid in potentially minimizing the effects of fatigue in lower extremity mechanics. © 2012 Copyright Taylor and Francis Group, LLC.","anterior cruciate ligament; biomechanics; hip; knee","Adolescent; Biomechanics; Female; Hip; Humans; Knee; Lower Extremity; Muscle Fatigue; Running; Soccer; Task Performance and Analysis; Young Adult; adolescent; adult; article; biomechanics; female; hip; human; knee; leg; muscle fatigue; physiology; running; sport; task performance","Arendt E.A., Agel J., Dick R., Anterior cruciate ligament injury patterns among collegiate men and women, Journal of Athletic Training, 34, 2, pp. 86-92, (1999); Baca A., A comparison of methods for analyzing drop jump performance, Medicine and Science in Sports and Exercise, 31, 3, pp. 437-442, (1999); Begon M., Monnet T., Lacouture P., Effects of movement for estimating the hip joint centre, Gait and Posture, 25, 3, pp. 353-359, (2007); Boden B.P., Dean G.S., Feagin Jr. J.A., Garrett Jr. W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Borotikar B.S., Newcomer R., Koppes R., McLean S.G., Combined effects of fatigue and decision making on female lower limb landing postures: Central and peripheral contributions to ACL injury risk, Clinical Biomechanics (Bristol, Avon), 23, 1, pp. 81-92, (2008); Cairns S.P., Knicker A.J., Thompson M.W., Sjogaard G., Evaluation of models used to study neuromuscular fatigue, Exercise and Sport Sciences Reviews, 33, 1, pp. 9-16, (2005); Chappell J.D., Herman D.C., Knight B.S., Kirkendall D.T., Garrett W.E., Yu B., Effect of fatigue on knee kinetics and kinematics in stop-jump tasks, American Journal of Sports Medicine, 33, 7, pp. 1022-1029, (2005); Cortes N., Blount E., Ringleb S., Onate J., Soccer-specific video simulation for improving movement assessment, Sports Biomechanics, 10, 1, pp. 12-24, (2011); Cortes N., Onate J., van Lunen B., Pivot task increases knee frontal plane loading compared with sidestep and drop-jump, Journal of Sports Sciences, 29, 1, pp. 83-92, (2011); Dempster W.T., WADC technical report. 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Steffen K., Myklebust G., Olsen O.E., Holme I., Bahr R., Preventing injuries in female youth football - a cluster-randomized controlled trial, Scandinavian Journal of Medicine and Science in Sports, 18, 5, pp. 605-614, (2008); Winter D.A., Biomechanics and motor control of human movement, (2005); Wojtys E.M., Wylie B.B., Huston L.J., The effects of muscle fatigue on neuromuscular function and anterior tibial translation in healthy knees, American Journal of Sports Medicine, 24, 5, pp. 615-621, (1996); Yu B., Lin C.F., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clinical Biomechanics (Bristol, Avon), 21, 3, pp. 297-305, (2006)","N. Cortes; George Mason University, Sports Medicine Assessment Research and Testing Laboratory, School of Recreation, Health, and Tourism, Manassas, 20110, 10900 University Blvd. MS 4E5, United States; email: ncortes@gmu.edu","","","1466447X","","JSSCE","22424559","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84859593616" "Brukner P.; Nealon A.; Morgan C.; Burgess D.; Dunn A.","Brukner, Peter (7005580494); Nealon, Andrew (25724452200); Morgan, Christopher (38661612400); Burgess, Darren (35236191000); Dunn, Andrew (36757615600)","7005580494; 25724452200; 38661612400; 35236191000; 36757615600","Recurrent hamstring muscle injury: Applying the limited evidence in the professional football setting with a seven-point programme","2014","British Journal of Sports Medicine","48","11","","929","938","9","45","10.1136/bjsports-2012-091400","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84900505038&doi=10.1136%2fbjsports-2012-091400&partnerID=40&md5=d8073f38c30a4d5c3a73ab8111a58fea","Departmernt of Sports Medicine and Sports Science, Liverpool Football Club, C/- 158 Unity Building, Liverpool L3 9BW, 3 Rumford Place, United Kingdom; North West Musculoskeletal Imaging, Liverpool, United Kingdom","Brukner P., Departmernt of Sports Medicine and Sports Science, Liverpool Football Club, C/- 158 Unity Building, Liverpool L3 9BW, 3 Rumford Place, United Kingdom; Nealon A., Departmernt of Sports Medicine and Sports Science, Liverpool Football Club, C/- 158 Unity Building, Liverpool L3 9BW, 3 Rumford Place, United Kingdom; Morgan C., Departmernt of Sports Medicine and Sports Science, Liverpool Football Club, C/- 158 Unity Building, Liverpool L3 9BW, 3 Rumford Place, United Kingdom; Burgess D., Departmernt of Sports Medicine and Sports Science, Liverpool Football Club, C/- 158 Unity Building, Liverpool L3 9BW, 3 Rumford Place, United Kingdom; Dunn A., North West Musculoskeletal Imaging, Liverpool, United Kingdom","Recurrent hamstring injuries are a major problem in sports such as football. The aim of this paper was to use a clinical example to describe a treatment strategy for the management of recurrent hamstring injuries and examine the evidence for each intervention. A professional footballer sustained five hamstring injuries in a relatively short period of time. The injury was managed successfully with a seven-point programme-biomechanical assessment and correction, neurodynamics, core stability, eccentric strengthening, an overload running programme, injection therapies and stretching/relaxation. The evidence for each of these treatment options is reviewed. It is impossible to be definite about which aspects of the programme contributed to a successful outcome. Only limited evidence is available in most cases; therefore, decisions regarding the use of different treatment modalities must be made by using a combination of clinical experience and research evidence.","","Adult; Athletic Injuries; Biomechanical Phenomena; Clinical Protocols; Exercise Therapy; Humans; Leg Injuries; Magnetic Resonance Imaging; Male; Muscle Strength; Muscle, Skeletal; Nervous System Diseases; Recurrence; Relaxation Therapy; Risk Factors; Running; Soccer; Yoga; adult; Athletic Injuries; biomechanics; case report; clinical protocol; human; kinesiotherapy; Leg Injuries; male; muscle strength; Nervous System Diseases; nuclear magnetic resonance imaging; pathophysiology; physiology; procedures; recurrent disease; relaxation training; risk factor; running; skeletal muscle; soccer; yoga","Alonso J.M., Tscholl P.M., Engebretsen L., Et al., Occurrence of injuries and illnesses during the 2009 IAAF World Athletics Championships, Br J Sports Med, 44, pp. 1100-1105, (2010); Orchard J.W., James T., Portus M.R., Injuries to elite male cricketers in Australia over a 10-year period, J Sci Med Sport, 9, pp. 459-467, (2006); 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Bradley P.S., Portas M.D., The relationship between preseason range of motion and muscle strain injury in elite soccer players, J Strength Condition Res, 21, pp. 1155-1159, (2007); Henderson G., Barnes C.A., Portas M.D., Factors associated with increased propensity for hamstring injury in English Premier League soccer players, J Sci Med Sport, 13, pp. 397-402, (2010); Witvrouw E., Danneels L., Asselman P., Et al., Muscle flexibility as a risk factor for developing muscle injuries in male professional soccer players. A prospective study, Am J Sports Med, 31, pp. 41-46, (2003); Malliaropoulos N., Papalexandris S., Papalada A., Et al., The role of stretching in rehabilitation of hamstring injuries: 80 athletes follow-up, Med Sci Sports Exerc, 36, pp. 756-759, (2004); Jarvinen T.A., Jarvinen T.L., Kaariainen M., Et al., Muscle injuries: Optimising recovery, Best Pract Res Clin Rheumatol, 21, pp. 317-331, (2007); Yu B., Queen R.M., Abbey A.N., Et al., Hamstring muscle kinematics and activation during overground sprinting, J Biomech, 41, pp. 3121-3126, (2008); Harvey D., Assessment of the flexibility of elite athletes using the modified Thomas test, Br J Sports Med, 32, pp. 68-70, (1998); Hartfiel N., Havenhand J., Khalsa S.B., Et al., The effectiveness of yoga for the improvement of well-being and resilience to stress in the workplace, Scand J Work Environ Health, 37, pp. 70-76, (2011); Tilbrook H.E., Cox H., Hewitt C.E., Et al., Yoga for chronic low back pain: A randomized trial, Ann Intern Med, 155, pp. 569-578, (2011)","P. Brukner; Departmernt of Sports Medicine and Sports Science, Liverpool Football Club, C/- 158 Unity Building, Liverpool L3 9BW, 3 Rumford Place, United Kingdom; email: peterbrukner@gmail.com","","BMJ Publishing Group","03063674","","BJSMD","23322894","English","Br. J. Sports Med.","Article","Final","All Open Access; Green Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-84900505038" "Jones P.A.; Herrington L.; Graham-Smith P.","Jones, Paul A. (55308526600); Herrington, Lee (7004230643); Graham-Smith, Philip (23992390400)","55308526600; 7004230643; 23992390400","Braking characteristics during cutting and pivoting in female soccer players","2016","Journal of Electromyography and Kinesiology","30","","","46","54","8","51","10.1016/j.jelekin.2016.05.006","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84973550760&doi=10.1016%2fj.jelekin.2016.05.006&partnerID=40&md5=6e224c1d33504375713bac908d040fca","Directorate of Sport, Exercise and Physiotherapy, University of Salford, United Kingdom; Aspire Academy, Doha, Qatar","Jones P.A., Directorate of Sport, Exercise and Physiotherapy, University of Salford, United Kingdom; Herrington L., Directorate of Sport, Exercise and Physiotherapy, University of Salford, United Kingdom; Graham-Smith P., Directorate of Sport, Exercise and Physiotherapy, University of Salford, United Kingdom, Aspire Academy, Doha, Qatar","Most biomechanical studies into changing direction focus on final contact (FC), whilst limited research has examined penultimate contact (PEN). The aim of this study was to explore the kinematic and kinetic differences between PEN and FC of cutting and pivoting in 22 female soccer players (mean ± SD; age: 21 ± 3.1 years, height: 1.68 ± 0.07 m, mass: 58.9 ± 7.3 kg). Furthermore, the study investigated whether horizontal force-time characteristics during PEN were related to peak knee abduction moments during FC. Three dimensional motion analyses of cutting and pivoting on the right leg were performed using Qualysis 'Proreflex' infrared cameras (240 Hz). Ground reaction forces (GRF) were collected from two AMTI force platforms (1200 Hz) to examine PEN and FC. Both manoeuvres involved significantly (P < 0.05) greater knee joint flexion angles, peak horizontal GRF, but lower average horizontal GRF during PEN compared to FC. Average horizontal GRF during PEN (R = -0.569, R2 = 32%, P = 0.006) and average horizontal GRF ratio (R = 0.466, R2 = 22%, P = 0.029) were significantly related to peak knee abduction moments during the FC of cutting and pivoting, respectively. The results indicate PEN during pre-planned changing direction helps reduce loading on the turning leg where there is greater risk of injuries to knee ligaments. © 2016 Elsevier Ltd.","Anterior cruciate ligament; Injury; Knee abduction moments; Penultimate contact","Adolescent; Adult; Anterior Cruciate Ligament; Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Female; Humans; Knee Injuries; Knee Joint; Lower Extremity; Muscle, Skeletal; Soccer; Young Adult; abduction; adult; Article; average horizontal ground reaction force; average horizontal ground reaction force ratio; biomechanics; camera; cutting; female; final contact; ground reaction force; human; human experiment; kinematics; kinetics; knee abduction; knee function; leg movement; peak horizontal ground reaction force; penultimate contact; pivoting; priority journal; soccer player; sports medicine; time; velocity; young adult; adolescent; anterior cruciate ligament; Anterior Cruciate Ligament Injuries; biomechanics; knee; Knee Injuries; lower limb; pathophysiology; physiology; skeletal muscle; soccer","Angeloni C., Cappozzo A., Catani F., Leardini A., Quantification of relative displacement of skin- and plate-mounted markers with respect to bones, J. Biomechnol., 26, 7, (1993); Bell A.L., Brand R.A., Pedersen D.R., Prediction of hip-joint center location from external landmarks, Hum. Mov. Sci., 8, 1, pp. 3-16, (1989); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., Anticipatory effects on knee joint loading during running and cutting maneuvers, Med. Sci. Sports Exerc., 33, 7, pp. 1176-1181, (2001); Bloomfield J., Polman R., O'Donoghue P., Deceleration movements performed during FA Premier League soccer matches. Abstracts from the VIth World Congress on Science and Football, Antalya, Turkey, 2007, J. Sports Sci. Med., 10 S, (2007); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Cappozzo A., Cappello A., Della Croce U., Pensalfini F., Surface marker cluster design for 3-D bone movement reconstruction, IEEE Trans. Biomed. Eng., 44, 12, pp. 1165-1174, (1997); Cortes N., Onate J., van Lunen B., Pivot task increases knee frontal plane loading compared with sidestep and drop-jump, J. Sports Sci., 29, 1, pp. 83-92, (2011); Dempsey A.R., Lloyd D.G., Elliot B.C., Steele J.R., Munro B.J., Changing sidestep cutting technique reduces knee valgus loading, Am. J. Sports Med., 37, 11, pp. 2194-2200, (2009); Dempsey A.R., Lloyd D.G., Elliot B.C., Steele J.R., Munro B.J., Russo K.A., The effect of technique change on knee loads during sidestep cutting, Med. Sci. Sports Exerc., 39, 10, pp. 1765-1773, (2007); Dempster W.T., Space requirements of the seated operator: Geometrical, kinematic, and mechanical aspects of the body with special reference to the limbs, (1955); Faude O., Junge A., Kindermann W., Dvorak J., Injuries in female soccer players. A prospective study in the German national league, Am. J. Sports Med., 33, 11, pp. 1694-1700, (2005); Graham-Smith P., Atkinson L., Barlow R., Jones P., Braking characteristics and load distribution in 180° turns, Proceedings of the 5th Annual UK Strength and Conditioning Association Conference, (2009); Graham-Smith P., Pearson S., An investigation into the determinants of agility performance, Proceedings of the 3rd International Biomechanics of the lower limb in health, disease and rehabilitation, (2005); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three dimensional motions: application to the knee, J. Biomech. Eng., 105, 2, pp. 136-144, (1983); Jones P.A., Herrington L.C., Graham-Smith P., Technique determinants of knee joint loads during cutting in female soccer players, Hum. Mov. Sci., 42, pp. 203-211, (2015); Jones P.A., Herrington L.C., Graham-Smith P., Technique determinants of knee joint loads during pivoting in female soccer players, Clin. Biomech., 31, pp. 107-112, (2016); Kristianlunds E., Faul O., Bahr R., Myklebust G., Krosshaug T., Sidestep cutting techniques and knee abduction loading: implications for ACL prevention exercises, Br. J. Sports Med., 48, 9, pp. 779-783, (2014); Manal K., McClay I., Stanhope S., Richards J., Galinat B., Comparison of surface mounted markers and attachment methods is estimating tibial rotations during walking: an in vivo study, Gait Posture, 11, 1, pp. 38-45, (2000); McLean S.G., Su A., Den Bogert V.A.J., Development and validation of a 3-D model to predict knee joint loading during dynamic movement, J. Biomech. Eng., 125, 6, pp. 864-874, (2003); McLean S.G., Huang X., Su A., Den Bogert V.A.J., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clin. Biomech., 19, 8, pp. 828-838, (2004); McLean S.G., Huang X., Den Bogert V.A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clin. Biomech., 20, 8, pp. 863-870, (2005); Nedergaard N.J., Kersting U., Lake M., Using accelerometry to quantify deceleration during a high-intensity soccer turning manoeuvre, J. Sports Sci., 32, 20, pp. 1897-1905, (2014); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball. A systematic video analysis, Am. J. Sports Med., 32, 4, pp. 1002-1012, (2004); Sheppard J.M., Young W.B., Agility literature review: classifications, training and testing, J. Sports Sci., 24, 9, pp. 919-932, (2006); Shin C.S., Chaudhari A.M., Andriacchi T.P., The effect of isolated valgus moments on ACL strain during single-leg landing: a simulation study, J. Biomech., 42, 3, pp. 280-285, (2009); Shin C.S., Chaudhari A.M., Andriacchi T.P., Valgus plus rotation moments increase anterior cruciate ligament strain more than either alone, Med. Sci. Sports Exerc., 43, 8, pp. 1484-1491, (2011); Sigward S.M., Powers C.M., Loading characteristics of females exhibiting excessive valgus moments during cutting, Clin. Biomech., 22, 7, pp. 827-833, (2007); Vanrenterghem J., Venables E., Pataky T., Robinson M.A., The effect of running speed on knee mechanical loading in females during side cutting, J. Biomech., 45, 14, pp. 2444-2449, (2012); Vincent W.J., Statistics in Kinesiology, (1995); Winter D.A., Biomechanics and Motor Control of Human Movement, (1990); Yeadon M.R., Kato T., Kerwin D.G., Measuring running speed using photocells, J. Sports Sci., 17, 3, pp. 249-257, (1999)","P.A. Jones; Directorate of Sport, Exercise and Physiotherapy, University of Salford, Greater Manchester, Allerton Building, Frederick Road Campus, Salford, M6 6PU, United Kingdom; email: P.A.Jones@salford.ac.uk","","Elsevier Ltd","10506411","","JEKIE","27295508","English","J. Electromyogr. Kinesiology","Article","Final","","Scopus","2-s2.0-84973550760" "Iga J.; George K.; Lees A.; Reilly T.","Iga, J. (17345402800); George, K. (26643531900); Lees, A. (7202900498); Reilly, T. (7103375564)","17345402800; 26643531900; 7202900498; 7103375564","Cross-sectional investigation of indices of isokinetic leg strength in youth soccer players and untrained individuals","2009","Scandinavian Journal of Medicine and Science in Sports","19","5","","714","719","5","63","10.1111/j.1600-0838.2008.00822.x","https://www.scopus.com/inward/record.uri?eid=2-s2.0-70349649331&doi=10.1111%2fj.1600-0838.2008.00822.x&partnerID=40&md5=ffb3096fd86bc63b2e516a611a44dfc2","Faculty of Sport, Health and Social Care, UK, University of Gloucestershire, Gloucestershire, United Kingdom; Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Henry Cotton Campus, Liverpool L3 2ET, Webster Street, United Kingdom","Iga J., Faculty of Sport, Health and Social Care, UK, University of Gloucestershire, Gloucestershire, United Kingdom; George K., Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Henry Cotton Campus, Liverpool L3 2ET, Webster Street, United Kingdom; Lees A., Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Henry Cotton Campus, Liverpool L3 2ET, Webster Street, United Kingdom; Reilly T., Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Henry Cotton Campus, Liverpool L3 2ET, Webster Street, United Kingdom","In this cross-sectional study, the differences in the isokinetic peak torque of the knee joint muscles (dominant and non-dominant) were investigated in three groups of youths (n=45; age, 14.9±1.1 years) with different soccer training backgrounds. Significant main effects were observed for training background on the functional hamstrings to quadriceps ratios for knee flexion (H CON:Q ECC ratio; F 2,42=4.023, P=0.025) and extension (H ECC:Q CON ratio; F 2,42=8.53, P<0.001) at 4.32 rad/s. Post hoc tests indicated that both ratios were significantly different between conventionally trained players compared with resistance-trained players and controls (mean±SD; H ECC:Q CON ratio, dominant limb; 0.91±0.10; 1.04±0.12; 1.10±0.22; non-dominant limb; 0.89±0.09; 1.05±0.19; 1.06±0.15; H CON:Q ECC ratio, dominant limb; 0.36±0.06; 0.34±0.07; 0.30±0.08; non-dominant limb; 0.33±0.05; 0.32±0.08; 0.28±0.07). Results suggest that the muscle-loading patterns experienced in youth soccer may alter the reciprocal balance of strength about the knee under high-velocity conditions. The findings also indicate that these balances may be improved by incorporating resistance training into the habitual exercise routines of youth soccer players. © 2009 John Wiley & Sons A/S.","Bilateral strength; Hamstrings; Peak torque; Quadriceps; Reciprocal strength; Resistance training","Adolescent; Athletic Performance; Biomechanics; Cross-Sectional Studies; Great Britain; Humans; Leg; Male; Muscle Strength; Resistance Training; Soccer; Torque; adolescent; article; athletic performance; biomechanics; comparative study; cross-sectional study; human; leg; male; muscle strength; physiology; resistance training; sport; torque; United Kingdom","Aagaard P., Simonsen E.B., Trolle M., Bangsbo J., Klausen K., Specificity of training velocity and training load on gains in isokinetic knee joint strength, Acta Physiol Scand, 156, pp. 123-129, (1996); Aagaard P., Simonsen E.B., Magnusson P., Larsson B., Dyhre-Poulsen P., A new concept for isokinetic hamstring: Quadriceps muscle strength ratio, Am J Sports Med, 26, pp. 231-237, (1998); Askling C., Karlson J., Thorstensson A., Hamstring injury occurrence in elite soccer players after strength training with eccentric overload, Scand J Med Sci Sports, 13, pp. 244-250, (2003); Bangsbo J., Norregaard L., Thorsoe F., Activity profile of competition soccer, Can J Sports Sci, 16, pp. 110-116, (1991); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Burnie J., Brodie D.A., Isokinetic measurement in preadolescent males, Int J Sports Med, 7, pp. 205-209, (1986); Cometti G., Maffiuletti N.A., Pousson M., Chatard J.-C., Maffulli N., Isokinetic strength and anaerobic power of elite, subelite and amateur French football players, Int J Sports Med, 22, pp. 45-51, (2001); Croisier J.L., Factors associated with recurrent hamstring injuries, Sports Med, 34, pp. 681-695, (2004); Garrett W., Muscle strain injuries, Am J Sports Med, 24, (1996); Hansen L., Bangsbo J., Twisk J., Klausen K., Development of muscle strength in relation to training level and testosterone in young male soccer players, J Appl Physiol, 87, pp. 1141-1147, (1999); Heidt R.S., Sweeterman L.M., Carlonas R.L., Traub J.A., Tekulve F.X., Avoidance of soccer injuries with preseason conditioning, Am J Sports Med, 28, pp. 659-662, (2000); Holder-Powell H.M., Rutherford O.M., Reduction in range of movement can increase maximum voluntary eccentric force for the human knee extensor muscles, Eur J Appl Physiol, 80, pp. 502-504, (1999); Iga J., George K., Lees A., Reilly T., Reliability of assessing indices of isokinetic leg strength in pubertal soccer players, Ped Exer Sci, 18, pp. 436-445, (2006); Le Gall F., Carling C., Reilly T., Vandewalle H., Church J., Rochconger P., Incidence of injuries in elite French youth soccer players: A10-season study, Am J Sports Med, 34, pp. 928-938, (2006); Kellis S., Gerodimos V., Kellis E., Manou V., Bilateral isokinetic concentric and eccentric strength profiles of the knee extensors and flexors in young soccer players, Isokin Exer Sci, 9, pp. 31-39, (2001); Olsen O.-E., Myklebust G., Engebretsen L., Holme I., Bahr R., Exercises to prevent lower limb injuries in youth sports: Cluster randomised controlled trial, Brit Med J, 330, (2005); Orchard J., Marsden J., Lord S., Garlick D., Preseason hamstring muscle weakness associated with hamstrings muscle injury in Australian footballers, Am J Sports Med, 25, pp. 81-85, (1997); Micheli L.J., Metzl J.D., Di Canzio J., Zurakowski D., Anterior cruciate ligament reconstructive surgery in adolescent soccer and basketball players, Clin J Sports Med, 9, pp. 138-141, (1999); Price R.J., Hawkins R.D., Hulse M.A., Hodson A., The Football Association medical research programme: An audit of injuries in academy youth football, Br J Sports Med, 38, pp. 466-471, (2004); Rahnama N., Lees A., Bambaecichi E., A comparison of muscle strength and flexibility between the preferred and non-preferred leg in English soccer players, Ergonomics, 48, pp. 1568-1575, (2005); Rochcongar P., Morvan R., Jan J., Dassonville J., Beillot J., Isokinetic investigation of knee extensors and flexors in young French soccer players, Int J Sports Med, 9, pp. 448-450, (1988); Shea K.G., Apel P.J., Pfeiffer Anterior cruciate ligament injury in paediatric and adolescent patients: A review of basic science and clinical research, Sports Med, 33, pp. 455-471, (2003); Stanton P., Purdam C., Hamstrings injuries in sprinting - The role of eccentric exercise, J Orthop Sports Phys Ther, 10, pp. 343-349, (1989); Stratton G., Jones M., Fox K.R., Tolfrey K., Harris J., Maffulli N., Lee M., Frostick S.P., BASES position statement on guidelines for resistance exercise in young people, J Sports Sci, 22, pp. 383-390, (2004); Vrijen J., Muscle strength development in the pre- and post-pubescent ages, Med Sport, 11, pp. 152-158, (1978); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., The Football Association Medical Research Programme: An audit of injuries in professional football - Analysis of hamstring injuries, British Journal of Sports Medicine, 38, 1, pp. 36-41, (2004); Zakas A., Bilateral isokinetic peak torque of quadriceps and hamstrings muscles in professional soccer players with dominance on one or both two sides, J Sports Med Phys Fitness, 46, pp. 28-35, (2006)","K. George; Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Henry Cotton Campus, Liverpool L3 2ET, Webster Street, United Kingdom; email: K.George@ljmu.ac.uk","","","16000838","","SMSSE","18627555","English","Scand. J. Med. Sci. Sports","Article","Final","","Scopus","2-s2.0-70349649331" "Malloy P.J.; Morgan A.M.; Meinerz C.M.; Geiser C.F.; Kipp K.","Malloy, Philip J. (55786598500); Morgan, Alexander M. (57224711717); Meinerz, Carolyn M. (56312219000); Geiser, Christopher F. (36876804800); Kipp, Kristof (36835336600)","55786598500; 57224711717; 56312219000; 36876804800; 36835336600","Hip External Rotator Strength is Associated With Better Dynamic Control of the Lower Extremity During Landing Tasks","2016","Journal of Strength and Conditioning Research","30","1","","282","291","9","47","10.1519/JSC.0000000000001069","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84953896818&doi=10.1519%2fJSC.0000000000001069&partnerID=40&md5=e7df1a21fb720815dabe1ff65dbcb8f1","Program in Exercise Science, Department of Physical Therapy, Motion and Biomechanics Analysis Laboratory, Marquette University, Milwaukee, WI, United States","Malloy P.J., Program in Exercise Science, Department of Physical Therapy, Motion and Biomechanics Analysis Laboratory, Marquette University, Milwaukee, WI, United States; Morgan A.M., Program in Exercise Science, Department of Physical Therapy, Motion and Biomechanics Analysis Laboratory, Marquette University, Milwaukee, WI, United States; Meinerz C.M., Program in Exercise Science, Department of Physical Therapy, Motion and Biomechanics Analysis Laboratory, Marquette University, Milwaukee, WI, United States; Geiser C.F., Program in Exercise Science, Department of Physical Therapy, Motion and Biomechanics Analysis Laboratory, Marquette University, Milwaukee, WI, United States; Kipp K., Program in Exercise Science, Department of Physical Therapy, Motion and Biomechanics Analysis Laboratory, Marquette University, Milwaukee, WI, United States","The purpose of this study was to determine the association between hip strength and lower extremity kinematics and kinetics during unanticipated single-leg landing and cutting tasks in collegiate female soccer players. Twenty-three National Collegiate Athletic Association division I female soccer players were recruited for strength testing and biomechanical analysis. Maximal isometric hip abduction and external rotation strength were measured using a hand-held dynamometer and expressed as muscle torque (force × femoral length) and normalized to body weight. Three-dimensional lower extremity kinematics and kinetics were assessed with motion analysis and force plates, and an inverse dynamics approach was used to calculate net internal joint moments that were normalized to body weight. Greater hip external rotator strength was significantly associated with greater peak hip external rotation moments (r = 0.47; p = 0.021), greater peak knee internal rotation moments (r = 0.41; p = 0.048), greater hip frontal plane excursion (r = 0.49; p = 0.017), and less knee transverse plane excursion (r = -0.56; p = 0.004) during unanticipated single-leg landing and cutting tasks. In addition, a statistical trend was detected between hip external rotator strength and peak hip frontal plane moments (r = 0.39; p = 0.06). The results suggest that females with greater hip external rotator strength demonstrate better dynamic control of the lower extremity during unanticipated single-leg landing and cutting tasks and provide further support for the link between hip strength and lower extremity landing mechanics. © 2015 National Strength and Conditioning Association.","ACL injury; biomechanics; dynamic valgus; hip strength; unanticipated tasks","Adolescent; Biomechanical Phenomena; Female; Hip Joint; Humans; Kinetics; Knee Joint; Lower Extremity; Muscle Strength; Muscle, Skeletal; Random Allocation; Soccer; Torque; Young Adult; adolescent; biomechanics; female; hip; human; kinetics; knee; lower limb; muscle strength; physiology; randomization; skeletal muscle; soccer; torque; young adult","Agel J., Klossner D., Epidemiologic review of collegiate ACL injury rates across 14 sports: National collegiate athletic association injury surveillance system data 2004-05 through 2011-12, Br J Sports Med, 48, (2014); Alentorn-Geli E., Myer G.D., Silvers H.J., Samitier G., Romero D., Lazaro-Haro C., Cugat R., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: Mechanisms of injury and underlying risk factors, Knee Surg Sports Traumatol Arthrosc, 17, pp. 705-729, (2009); Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer: NCAA data and review literature, Am J Sports Med, 23, pp. 694-701, (1995); Baldon R., Lobato D., Carvalho L., Santiago P., Benze B., Serrao F., Relationship between eccentric hip torque and lower limb kinematics: Gender differences, J Appl Biomech, 27, pp. 223-232, (2011); Bandholm T., Thorburg K., Andersson E., Larsen T., Toftdahl M., Bencke J., Holmich P., Increased external hip rotation strength relates to reduced dynamic knee control in females: Paradox or adaptation?, Scand J Med Sci Sports, 21, pp. e215-e221, (2011); Beiser T.F., Lloyd D.G., Ackland T.R., Cochrane J.L., Anticipatory effects on knee joint loading during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1176-1181, (2001); Bolgla L.A., Malone T.R., Umberger B.R., Uhl T.L., Hip strength and hip and knee kinematics during stair descent in females with and without patellofemoral pain syndrome, J Orthop Sports Phys Ther, 38, pp. 12-18, (2008); Brown T.N., Palmieri-Smith R., McLean S.G., Sex and limb differences in hip and knee kinematics and kinetics during anticipated and unanticipated jump landings: Implications for anterior cruciate ligament injury, Br J Sports Med, 43, pp. 1049-1056, (2009); Cole G.K., Nigg B.M., Ronsky J.L., Yeadon M.R., Application of the joint coordinate system to three-dimensional joint attitude and movement representation: A standardization proposal, J Biomech Eng, 115, pp. 344-349, (1993); Decker M.J., Torry M.R., Wyland D.J., Sterett W.I., Steadman R., Gender differences in lower extremity kinematics, kinetics, and energy absorption during landing, Clin Biomech, 18, pp. 662-669, (2003); Delp S.L., Hess W.E., Hungerford D.A., Jones L.C., Variation in rotation moments with hip flexion, J Biomech, 32, pp. 493-501; Faul F., Erdefelder E., Buchner A., Lang A.G., Statistical power analysis using G∗Power 3.1: Tests for correlation and regression analyses, Behav Res Methods, 41, pp. 1149-1160, (2009); Geiser C.F., O'Connor K.M., Earl J.E., Effects of isolated hip abductor fatigue on frontal plane knee mechanics, Med Sci Sports Exerc, 42, pp. 535-545, (2010); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, J Biomech Eng, 105, pp. 136-144, (1983); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Van Den-Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate injury risk in female athletes: A prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Homan K.J., Norcross M.F., Goerger B.M., Blackburn J.T., The influence of hip strength on gluteal activity and lower extremity kinematics, J Electromyogr Kinesiol, 23, pp. 411-415, (2013); Jacobs C.A., Uhl T.L., Mattacola C.G., Shapiro R., Rayens W.S., Hip abductor function and lower extremity landing kinematics: Sex differences, J Athl Train, 42, pp. 76-83, (2007); Kabada M.P., Ramakrishnan H.K., Wooten M.E., Measurement of lower extremity kinematics during level walking, J Orthop Res, 8, pp. 383-392, (1990); Kernozek T.W., Torry M.R., Iwasaki M., Gender differences in lower extremity landing mechanics caused by neuromuscular fatigue, Am J Sports Med, 36, pp. 554-565, (2008); Lawrence R.K., Kernozek T.W., Miller E.J., Torry M.R., Reutmann P., Influences of hip external rotation strength on knee mechanics during single-leg drop landings in females, Clin Biomech, 23, pp. 806-813, (2008); Leetun D.T., Ireland M.L., Willson J.D., Ballantyne B.T., Davis I.M., Core stability measures as risk factors for lower extremity injury in athletes, Med Sci Sports Exerc, 36, pp. 926-934, (2004); McLean S.G., The ACL injury enigma: We can't prevent what we don't understand, J Athl Train, 43, pp. 538-540, (2008); McLean S.G., Huang X., Van Den-Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clin Biomech, 20, pp. 863-870, (2005); Neumann D.A., Kinesiology of the hip: A focus on muscular actions, J Orthop Sports Phys Ther, 40, pp. 82-94, (2010); Pollard C.D., Sigward S.M., Powers C.M., Gender differences in hip joint kinematics and kinetics during side-step cutting maneuver, Clin J Sports Med, 17, pp. 38-42, (2007); Pollard C.D., Sigward S.M., Powers C.M., Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments, Clin Biomech, 25, (2010); Powers C.M., The influence of abnormal hip mechanics on knee injury: A biomechanical perspective, J Orthop Sports Phys Ther, 40, pp. 42-51, (2010); Schache A.G., Baker R., On the expression of joint moments during gait, Gait and Posture, 25, pp. 440-452, (2008); Sigward S.M., Powers C.M., The influence of gender on knee kinematics, kinetics, and muscle activation patterns during side-step cutting, Clin Biomech, 21, pp. 41-48, (2006); Stearns K.M., Powers C.M., Improvement in hip muscle performance results in increased use of the hip extensors and abductors during a landing task, Am J Sports Med, 42, pp. 602-609, (2014); Szu-Ping L., Powers C.M., Description of a weight bearing method for assessing hip abductor and external rotator muscle performance, J Orthop Sports Phys Ther, 43, pp. 392-397, (2013); Thomas C., Jones P.A., Rothwell J., Chiang C.Y., Comfort P., An investigation into the relationship between maximum isometric strength and vertical jump performance, J Strength Cond Res, 29, pp. 2176-2185, (2015)","P.J. Malloy; Program in Exercise Science, Department of Physical Therapy, Motion and Biomechanics Analysis Laboratory, Marquette University, Milwaukee, United States; email: philip.malloy@marquette.edu","","NSCA National Strength and Conditioning Association","10648011","","","26110347","English","J. Strength Cond. Res.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84953896818" "Mallo J.; Navarro E.; García-Aranda J.-M.; Gilis B.; Helsen W.","Mallo, Javier (23992960900); Navarro, Enrique (24449528700); García-Aranda, José-María (23992423100); Gilis, Bart (13003180300); Helsen, Werner (7003789254)","23992960900; 24449528700; 23992423100; 13003180300; 7003789254","Activity profile of top-class association football referees in relation to performance in selected physical tests","2007","Journal of Sports Sciences","25","7","","805","813","8","63","10.1080/02640410600778602","https://www.scopus.com/inward/record.uri?eid=2-s2.0-34147131113&doi=10.1080%2f02640410600778602&partnerID=40&md5=1590d28aaac22c096c9e9d7224383e2a","Facultad de Ciencias de la Actividad Física y del Deporte, INEF, Universidad Politécnica de Madrid, Madrid, Spain; FIFA, Zurich, Switzerland; Department of Biomedical Kinesiology, Perception and Performance Laboratory, Katholieke Universiteit Leuven, Leuven, Belgium","Mallo J., Facultad de Ciencias de la Actividad Física y del Deporte, INEF, Universidad Politécnica de Madrid, Madrid, Spain; Navarro E., Facultad de Ciencias de la Actividad Física y del Deporte, INEF, Universidad Politécnica de Madrid, Madrid, Spain; García-Aranda J.-M., FIFA, Zurich, Switzerland; Gilis B., Department of Biomedical Kinesiology, Perception and Performance Laboratory, Katholieke Universiteit Leuven, Leuven, Belgium; Helsen W., Department of Biomedical Kinesiology, Perception and Performance Laboratory, Katholieke Universiteit Leuven, Leuven, Belgium","The aims of the present study were (1) to analyse the physical demands of top-class referees and (2) to compare their official FIFA fitness test results with physical performance during a match. The work rate profiles of 11 international referees were assessed during 12 competitive matches at the 2003 FIFA Under-17 World Cup and then analysed using a bi-dimensional photogrammetric video analysis system based on direct lineal transformation (DLT) algorithms. In the first 15 min of matches, the referees were more active, performing more high-intensity exercise (P < 0.01) than in the first 15 min of the second half. During the second half of matches, the referees covered a shorter distance (P < 0.01), spent more time standing still (P < 0.05), and covered less ground cruising (P < 0.05), sprinting (P < 05), and moving backwards (P < 0.001) than in the first half. Also in the second 45 min, the distance of referees from infringements increased (P < 0.05) in the left attacking zone of the filed. There was also a decrease (P < 0.05) in performance in the period following the most high-intensity activity, compared with the mean for the 90 min. Time spent performing high-intensity activities during a match was not related to performance in the 12-min run (r2 = 0.30; P < 0.05), the 200-m sprint (r2 = 0.05; P < 0.05), or the 50-m sprint (r2 = 0.001; P < 0.05). The results of this study show that: (1) top-class referees experienced fatigue at different stages of the match, and (2) the typical field tests used by FIFA (two 50-m and 200-m sprints, followed by a 12-min run) are not correlated with match activities.","2D biomechanical analysis; Distance covered; High-intensity activity; Impairment of physical performance","Adult; Exertion; Fatigue; Finland; Humans; Locomotion; Male; Physical Fitness; Soccer; Task Performance and Analysis; adult; algorithm; article; clinical article; competition; controlled study; correlation analysis; endurance; exercise; fatigue; fitness; human; jogging; physical activity; physical capacity; physical disability; physical performance; running; sports medicine; standing","Abdel-Aziz Y.I., Karara H.M., Direct linear transformation from comparator coordinates into space coordinates in close range photogrammetry, Proceedings of the Symposium on Close Range Photogrammetry ASP, pp. 1-18, (1971); Allard P., Blanchi J.P., Aissaqui R., Bases of three-dimensional reconstruction, Three Dimensional Analysis of Human Movement Human Kinetics, pp. 19-40, (1995); Asami T., Togari H., Ohashi J., Analysis of movement patterns of referees during soccer matches, Science and Football, pp. 341-345, (1988); Bangsbo J., The physiology of soccer - With special reference to intense intermittent exercise, Acta Physiologica Scandinavica, 151, pp. 1-156, (1994); Bangsbo J., Mohr M., Krustrup P., Physical capacity and match performance of top-class football referees in relation to age, Journal of Sports Sciences, 22, (2004); Bangsbo J., Norregaard L., Thorso F., Activity profile of competition soccer, Canadian Journal of Sports Science, 16, pp. 110-116, (1991); Bartlett R., Introduction to Sports Biomechanics, (1997); Baxter-Jones A.D.G., Helms P., Maffulli N., Baines-Preece J.C., Preece M., Growth and development of male gymnasts, swimmers, soccer and tennis players: A longitudinal study, Annals of Human Biology, 22, pp. 381-394, (1995); Bland J.M., Altman D.G., Statistical methods for assessing agreement between two methods of clinical measurement, The Lancet, 1, pp. 307-310, (1986); Castagna C., Abt G., D'Ottavio S., Relation between fitness tests and match performance in elite Italian soccer referees, Journal of Strength and Conditioning Research, 16, pp. 231-235, (2002); Castagna C., D'Ottavio S., Effect of maximal aerobic power on match performance in elite soccer referees, Journal of Strength and Conditioning Research, 15, pp. 420-425, (2001); Catterall C., Reilly T., Atkinson G., Goldwells A., Analysis of work rates and heart rates of association football referees, British Journal of Sports Medicine, 27, pp. 193-196, (1993); Cooper K., Testing and developing cardiovascular fitness, Exercise, Science and Fitness, pp. 45-55, (1980); D'Ottavio S., Castagna C., Analysis of match activities in elite soccer referees during actual match play, Journal of Strength and Conditioning Research, 15, pp. 167-171, (2001); D'Ottavio S., Castagna C., Physiological load imposed on elite soccer referees during actual match play, Journal of Sports Medicine and Physical Fitness, 41, pp. 27-32, (2001); Eissmann H.J., D'Hooghe M., Sports medical examinations, The 23rd Man: Sports Medical Advice for Football Referees, pp. 7-19, (1996); Franks I.M., Goodman D., A systematic approach to analysing sports performance, Journal of Sports Sciences, 4, pp. 49-59, (1986); Harley R.A., Tozer K., Doust J., An analysis of movement patterns and physiological strain in relation to optimal positioning of association football referees, Science and Football IV, pp. 137-143, (2001); Helsen W.F., Bultynck J.B., Physical and perceptual-cognitive demands of top-class refereeing in association football, Journal of Sports Sciences, 22, pp. 179-189, (2004); Johnston L., McNaughton L., The physiological requirements of soccer refereeing, Australian Journal of Science and Medicine in Sport, 26, pp. 67-72, (1994); Krustrup P., Bangsbo J., Physiological demands of top-class soccer refereeing in relation to physical capacity: Effect of intense intermittent exercise training, Journal of Sports Sciences, 19, pp. 881-891, (2001); Krustrup P., Mohr M., Bangsbo J., Activity profile and physiological demands of top-class soccer assistant refereeing in relation to training status, Journal of Sports Sciences, 20, pp. 861-871, (2002); Mallo J., Navarro E., Analysis of the load imposed on under-19 soccer players during some typical football training drills, Journal of Sports Sciences, 22, pp. 510-511, (2004); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, Journal of Sports Sciences, 21, pp. 519-528, (2003); Mohr M., Krustrup P., Nybo L., Nielsen J.J., Bangsbo J., Muscle temperature and sprint performance during soccer matches - Beneficial effect of re-warm-up at half time, Scandinavian Journal of Medicine and Science in Sports, 14, pp. 156-162, (2004); Navarro E., Mallo J., Biomechanical Analysis of Referees' and Assistant Referees' Match Activities During the FIFA U-17 Wold Championship, (2003); Reilly T., Bowen T., Exertional costs of changes in directional modes of running, Perceptual and Motor Skills, 58, pp. 149-150, (1984); Reilly T., Thomas V., A motion analysis of work-rate in different positional roles in professional football match-play, Journal of Human Movement Studies, 2, pp. 87-97, (1976); Saltin B., Metabolic fundamentals in exercise, Medicine and Science in Sports, 5, pp. 137-146, (1973); Thomas J.R., Nelson J.K., Research Methods in Physical Activity, (2001); Van Gool D., Van Gerven D., Boutmans J., The physiological load imposed on soccer players during real match-play, Science and Football, pp. 51-59, (1988); Weston M., Helsen W.F., MacMahon C., Kirkendall D.T., The impact of specific high intensity training sessions upon football referees' fitness levels, American Journal of Sports Medicine, 32, pp. 54-61, (2004); Woltring H.J., On optimal smoothing and derivate estimation from noisy displacement data in biomechanics, Human Movement Sciences, 4, pp. 229-245, (1985)","","","","1466447X","","JSSCE","17454548","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-34147131113" "Egan C.D.; Verheul M.H.G.; Savelsbergh G.J.P.","Egan, Christopher D. (22834347800); Verheul, Martine H. G. (8074788800); Savelsbergh, Geert J. P. (56250040000)","22834347800; 8074788800; 56250040000","Effects of experience on the coordination of internally and externally timed soccer kicks","2007","Journal of Motor Behavior","39","5","","423","432","9","46","10.3200/JMBR.39.5.423-432","https://www.scopus.com/inward/record.uri?eid=2-s2.0-35348926281&doi=10.3200%2fJMBR.39.5.423-432&partnerID=40&md5=93160096f58f254ba916a193d9e11ab4","School of Health and Social Sciences, Napier University, Edinburgh, United Kingdom; Perception-Movement-Action Research Centre, University of Edinburgh, United Kingdom; Institute for Fundamental and Clinical Human Movement Sciences, Vrije Universiteit Amsterdam, Netherlands; Institute for Biophysical and Clinical Research into Human Movement, Manchester Metropolitan University, United Kingdom; School of Health and Social Sciences, Napier University, Edinburgh EH10 5LG, Craighouse Road, United Kingdom","Egan C.D., School of Health and Social Sciences, Napier University, Edinburgh, United Kingdom, School of Health and Social Sciences, Napier University, Edinburgh EH10 5LG, Craighouse Road, United Kingdom; Verheul M.H.G., Perception-Movement-Action Research Centre, University of Edinburgh, United Kingdom; Savelsbergh G.J.P., Institute for Fundamental and Clinical Human Movement Sciences, Vrije Universiteit Amsterdam, Netherlands, Institute for Biophysical and Clinical Research into Human Movement, Manchester Metropolitan University, United Kingdom","The authors investigated differences in the soccer kick between 8 experienced and 10 less experienced participants in 2 different task conditions (kicking a stationary ball or a moving ball at a target). The experienced participants were more accurate than their less experienced counterparts, whereas there were no differences in maximum foot velocity between groups or between conditions. When compared with their performance in the stationary condition, participants kicked the moving ball with a smaller range of movement at the knee of the kicking leg, maintaining a proximodistal coordination pattern. Because of their significantly shorter knee-flexion phase, the participants in the experienced group displayed a significantly shorter time between initiation of the forward swing of the kick and ball contact than that of those in the less experienced group. The rapid knee flexion may have been a strategy of exploiting passive dynamics to increase accuracy rather than velocity. Members of both groups showed a proximodistal initiation sequence in the kicking leg, which suggests that players can acquire that coordination pattern with relatively little structured practice and that further practice leads to improvement possibly through the increased exploitation of passive dynamics. Copyright © 2007 Heldref Publications.","Motor control; Passive dynamics; Proximodistal; Range of movement; Skill","Adult; Biomechanics; Data Interpretation, Statistical; Foot; Humans; Joints; Male; Motor Skills; Psychomotor Performance; Soccer; accuracy; adult; article; athlete; controlled study; coordination; experience; human; human experiment; knee function; male; normal human; range of motion; skill; sport; task performance; time; biomechanics; foot; joint; motor performance; physiology; psychological aspect; psychomotor performance; sport; statistical analysis","Anderson D.I., Sidaway B., Coordination changes associated with practice of a soccer kick, Research Quarterly for Exercise and Sport, 65, pp. 93-99, (1994); Bennett S.J., Button C., Kingsbury D., Davids K., Manipulating visual constraints during practice enhances the acquisition of catching skill in children, Research Quarterly for Exercise and Sport, 70, pp. 220-232, (1999); Bernstein N., The co-ordination and regulation of movements, (1967); Davids K., Lees A., Burwitz L., Understanding and measuring coordination and control in kicking skills: Implications for talent identification and skill acquisition, Journal of Sports Sciences, 18, pp. 703-714, (2000); Deschamps T., Nourrit D., Caillou N., Delignieres D., Influence of a stressing constraint on stiffness and damping functions of a ski simulator's platform motion, Journal of Sports Sciences, 22, pp. 867-874, (2004); Deutsch K.M., Newell K.M., Age differences in noise and variability of isometric force production, Journal of Experimental Child Psychology, 80, pp. 392-408, (2001); Harris C.M., Wolpert D.M., Signal-dependent noise determines motor planning, Nature, 394, pp. 780-784, (1998); Hebb D.O., The organization of behavior: A neuropsychological theory, (1949); Jones K.E., Hamilton A.F.C., Wolpert D.M., Sources of signal-dependent noise during isometric force production, Journal of Neurophysiology, 88, pp. 1533-1544, (2002); Lashley K.S., Basic neural mechanisms in behavior, Psychological Review, 37, pp. 1-24, (1930); Lees A., Biomechanics applied to soccer skills, Science and soccer, pp. 123-134, (1996); Lees A., Nolan L., Three-dimensional kinematic analysis of the instep kick under speed and accuracy conditions, Science and football IV, pp. 16-21, (2002); Marteniuk R.G., Ivens C.J., Bertram C.P., Evidence of motor equivalence in a pointing task involving locomotion, Motor Control, 4, pp. 165-184, (2000); Newell K.M., Coordination, control and skill, Differing perspectives in motor learning, memory and control, pp. 295-317, (1985); Newell K.M., Constraints on the development of coordination, Motor development in children: Aspects of coordination and control, pp. 341-359, (1986); Nourrit D., Delignieres D., Caillou N., Deschamps T., Lauriot B., On discontinuities in motor learning: A longitudinal study of complex skill acquisition on a ski-simulator, Journal of Motor Behavior, 35, pp. 151-170, (2003); Putnam A.C., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Medicine and Science in Exercise and Sport, 23, pp. 130-144, (1991); Scott M.A., Williams M.A., Horn R.R., The co-ordination of kicking techniques in children, Development of movement co-ordination in children, pp. 241-250, (2003); Shang G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomechanics, 4, pp. 59-72, (2005); Tant C.L., Browder K.D., Wilkerson J.D., A three dimensional kinematic comparison of kicking techniques between male and female soccer players, Biomechanics in sport IX, pp. 101-105, (1991); Temprado J.J., Della-Grasta M., Farrell M., Laurent M., A novice-expert comparison of (intra-limb) coordination subserving the volleyball serve, Human Movement Science, 16, pp. 653-676, (1997); Teulier C., Nourrit D., Delignieres D., The evolution of oscillatory behavior during learning on a ski simulator, Research Quarterly for Exercise and Sport, 77, pp. 464-475, (2006); Vereijken B., van Emmerik R., Whiting H.T.A., Newell K., Free(z)ing degrees of freedom in skill acquisition, Journal of Motor Behavior, 24, pp. 133-142, (1992); Zebas C.J., Nelson J.D., Consistency in kinematic movement patterns and prediction of ball velocity in the football place kick, Proceedings of the VIth Symposium of the International Society of Biomechanics in Sports, pp. 419-424, (1990)","C.D. Egan; School of Health and Social Sciences, Napier University, Edinburgh EH10 5LG, Craighouse Road, United Kingdom; email: c.egan@napier.ac.uk","","","00222895","","JMTBA","17827118","English","J. Mot. Behav.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-35348926281" "Lockie R.G.; Murphy A.J.; Callaghan S.J.; Jeffriess M.D.","Lockie, Robert G. (36964910000); Murphy, Aron J. (7401451903); Callaghan, Samuel J. (55365046300); Jeffriess, Matthew D. (55366385900)","36964910000; 7401451903; 55365046300; 55366385900","Effects of sprint and plyometrics training on field sport acceleration technique","2014","Journal of Strength and Conditioning Research","28","7","","1790","1801","11","42","10.1519/JSC.0000000000000297","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84905969222&doi=10.1519%2fJSC.0000000000000297&partnerID=40&md5=72fee1cd9f2023ab7eb5b2faf7b3555c","Department of Exercise and Sport Science, School of Environmental and Life Sciences, University of Newcastle, Ourimbah, NSW, Australia; Department of Sports Studies, Exercise and Sports Science, Armidale, NSW, University of New England, Australia","Lockie R.G., Department of Exercise and Sport Science, School of Environmental and Life Sciences, University of Newcastle, Ourimbah, NSW, Australia; Murphy A.J., Department of Sports Studies, Exercise and Sports Science, Armidale, NSW, University of New England, Australia; Callaghan S.J., Department of Exercise and Sport Science, School of Environmental and Life Sciences, University of Newcastle, Ourimbah, NSW, Australia; Jeffriess M.D., Department of Exercise and Sport Science, School of Environmental and Life Sciences, University of Newcastle, Ourimbah, NSW, Australia","The mechanisms for speed performance improvement from sprint training and plyometrics training, especially relating to stance kinetics, require investigation in field sport athletes. This study determined the effects of sprint training and plyometrics training on 10-m sprint time (0-5, 5-10, and 0-10 m intervals), step kinematics (step length and frequency, contact and flight time), and stance kinetics (first, second, and last contact relative vertical [VF, VI], horizontal [HF, HI], and resultant [RF, RI] force and impulse; resultant ground reaction force angle [RFu]; ratio of horizontal to resultant force [RatF]) during a 10-m sprint. Sixteen male field sport athletes were allocated into sprint training (ST) and plyometrics training (PT) groups according to 10-m sprint time; independent samples t-tests (p ≤ 0.05) indicated no between-group differences. Training involved 2 sessions per week for 6 weeks. A repeated measures analysis of variance (p ≤ 0.05) determined within-and between-subject differences. Both groups decreased 0-5 and 0-10 m time. The ST group increased step length by ~15%, which tended to be greater than step length gains for the PT group (;7%). The ST group reduced first and second contact RFu and RatF, and second contact HF. Second contact HI decreased for both groups. Results indicated a higher post-training emphasis on VF production. Vertical force changes were more pronounced for the PT group for the last contact, who increased or maintained last contact VI, RF, and RI to a greater extent than the ST group. Sprint and plyometrics training can improve acceleration, primarily through increased step length and a greater emphasis on VF. © 2014 National Strength and Conditioning Association.","Biomechanics; Stance kinetics; Step kinematics; Step length; Vertical force","Acceleration; Adaptation, Physiological; Athletic Performance; Biomechanical Phenomena; Football; Humans; Male; Physical Conditioning, Human; Plyometric Exercise; Posture; Running; Soccer; Young Adult; acceleration; adaptation; athletic performance; biomechanics; body posture; exercise; football; human; male; physiology; plyometrics; procedures; running; soccer; young adult","Baker D., A comparison of running speed and quickness between elite professional and young rugby league players, Strength Cond Coach, 7, pp. 3-7, (1999); Baker D.G., Newton R.U., Comparison of lower body strength, power, acceleration, speed, agility, and sprint momentum to describe and compare playing rank among professional rugby league players, J Strength Cond Res, 22, pp. 153-158, (2008); Bangsbo J., Norregaard L., Thorso F., Activity profile of competition soccer, Can J Sport Sci, 16, pp. 110-116, (1991); Bradshaw E.J., Maulder P.S., Keogh J.W., Biological movement variability during the sprint start: Performance enhancement or hindrance?, Sports Biomech, 6, pp. 246-260, (2007); Brughelli M., Cronin J., Chaouachi A., Effects of running velocity on running kinetics and kinematics, J Strength Cond Res, 25, pp. 933-939, (2011); Buchheit M., Spencer M., Ahmaidi S., Reliability, usefulness, and validity of a repeated sprint and jump ability test, Int J Sports Physiol Perform, 5, pp. 3-17, (2010); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (1988); Dawson B., Hopkinson R., Appleby B., Stewart G., Roberts C., Player movement patterns and game activities in the Australian Football League, J Sci Med Sport, 7, pp. 278-291, (2004); Delecluse C., Influence of strength training on sprint running performance: Current findings and implications for training, Sports Med, 24, pp. 147-156, (1997); Docherty D., Wenger H.A., Neary P., Time-motion analysis related to the physiological demands of rugby, J Hum Mov Stud, 14, pp. 269-277, (1988); Duthie G.M., Pyne D.B., Marsh D.J., Hooper S.L., Sprint patterns in rugby union players during competition, J Strength Cond Res, 20, pp. 208-214, (2006); Garstecki M.A., Latin R.W., Cuppett M.M., Comparison of selected physical fitness and performance variables between NCAA Division i and II football players, J Strength Cond Res, 18, pp. 292-297, (2004); Gruen A., Fundamentals of videogrammetry-A review, Hum Mov Sci, 16, pp. 155-187, (1997); Harrison A.J., Bourke G., The effect of resisted sprint training on speed and strength performance in male rugby players, J Strength Cond Res, 23, pp. 275-283, (2009); Hewit J.K., Cronin J.B., Hume P.A., Kinematic factors affecting fast and slow straight and change-of-direction acceleration times, J Strength Cond Res, 27, pp. 69-75, (2013); Hopkins W.G., How to interpret changes in an athletic performance test, Sportscience, 8, pp. 1-7, (2004); Hopkins W.G., Reliability from Consecutive Pairs of Trials, (2009); Hunter J.P., Marshall R.N., McNair P.J., Interaction of step length and step rate during sprint running, Med Sci Sports Exerc, 36, pp. 261-271, (2004); Jovanovic M., Sporis G., Omrcen D., Fiorentini F., Effects of speed, agility, quickness training method on power performance in elite soccer players, J Strength Cond Res, 25, pp. 1285-1292, (2011); Kawamori N., Nosaka K., Newton R.U., Relationships between ground reaction impulse and sprint acceleration performance in team sport athletes, J Strength Cond Res, 27, pp. 568-573, (2013); Kollath E., Krabbe B., Kinetic analysis of short sprints of soccer players, Sportonomics, 2, pp. 55-58, (1996); Kraemer H.C., Thiemann S., How Many Subjects? Statistical Power Analysis in Research, (1987); Kristensen G.O., Van Den Tillar R., Ettema G.J.C., Velocity specificity in early-phase sprint training, J Strength Cond Res, 20, pp. 833-837, (2006); Kugler F., Janshen L., Body position determines propulsive forces in accelerated running, J Biomech, 43, pp. 343-348, (2010); Little T., Williams A.G., Specificity of acceleration, maximum speed, and agility in professional soccer players, J Strength Cond Res, 19, pp. 76-78, (2005); Lockie R.G., Murphy A.J., Knight T.J., Janse De Jonge X.A.K., Factors that differentiate acceleration ability in field sport athletes, J Strength Cond Res, 25, pp. 2704-2714, (2011); Lockie R.G., Murphy A.J., Schultz A.B., Jeffriess M.D., Callaghan S.J., Influence of sprint acceleration stance kinetics on velocity and step kinematics in field sport athletes, J Strength Cond Res, 27, pp. 2494-2503, (2013); Lockie R.G., Murphy A.J., Schultz A.B., Knight T.J., Janse De Jonge X.A.K., The effects of different speed training protocols on sprint acceleration kinematics and muscle strength and power in field sport athletes, J Strength Cond Res, 26, pp. 1539-1550, (2012); Lockie R.G., Murphy A.J., Spinks C.D., Effects of resisted sled towing on sprint kinematics in field-sport athletes, J Strength Cond Res, 17, pp. 760-767, (2003); Lockie R.G., Schultz A.B., Callaghan S.J., Jeffriess M.D., Berry S.P., Reliability and validity of a new test of change-of-direction speed for field-based sports: The Change-of-Direction and Acceleration Test (CODAT), J Sports Sci Med, 12, pp. 88-96, (2013); Mero A., Komi P.V., Effects of supramaximal velocity on biomechanical variables in sprinting, Int J Sport Biomech, 1, pp. 240-252, (1985); Mero A., Komi P.V., EMG, force, and power analysis of sprintspecific strength exercises, J Appl Biomech, 10, pp. 1-13, (1994); Morin J.B., Edouard P., Samozino P., Technical ability of force application as a determinant factor of sprint performance, Med Sci Sports Exerc, 43, pp. 1680-1688, (2011); Mujika I., Santisteban J., Castagna C., In-season effect of shortterm sprint and power training programs on elite junior soccer players, J Strength Cond Res, 23, pp. 2581-2587, (2009); Murphy A.J., Lockie R.G., Coutts A.J., Kinematic determinants of early acceleration in field sport athletes, J Sports Sci Med, 2, pp. 144-150, (2003); Nimphius S., McGuigan M.R., Newton R.U., Relationship between strength, power, speed, and change of direction performance of female softball players, J Strength Cond Res, 24, pp. 885-895, (2010); Rienzi E., Drust B., Reilly T., Carter J.E.L., Martin A., Investigation of anthropometric and work-rate profiles of elite South American international soccer players, J Sports Med Phys Fitness, 40, pp. 162-169, (2000); Rimmer E., Sleivert G., Effects of a plyometrics intervention program on sprint performance, J Strength Cond Res, 14, pp. 295-301, (2000); Spinks C.D., Murphy A.J., Spinks W.L., Lockie R.G., Effects of resisted sprint training on acceleration performance and kinematics in soccer, rugby union and Australian football players, J Strength Cond Res, 21, pp. 77-85, (2007); Spiteri T., Cochrane J.L., Hart N.H., Haff G.G., Nimphius S., Effect of strength on plant foot kinetics and kinematics during a change of direction task, Eur J Sport Sci, pp. 1-7, (2013); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer: An update, Sports Med, 35, pp. 501-536, (2005); Vincent W.J., Statistics in Kinesiology, (1995); Wallace B.J., Kernozek T.W., White J.M., Kline D.E., Wright G.A., Peng H.T., Huang C.F., Quantification of vertical ground reaction forces of popular bilateral plyometric exercises, J Strength Cond Res, 24, pp. 207-212, (2010); Weyand P.G., Sternlight D.B., Bellizzi M.J., Wright S., Faster top running speeds are achieved with greater ground forces not more rapid leg movements, J Appl Physiol, 89, pp. 1991-1999, (2000); Young W., Benton D., Duthie G., Pryor J., Resistance training for short sprints and maximum-speed sprints, Strength Cond J, 23, pp. 7-13, (2001)","R.G. Lockie; Department of Exercise and Sport Science, School of Environmental and Life Sciences, University of Newcastle, Ourimbah, NSW, Australia; email: robert.lockie@newcastle.edu.au","","NSCA National Strength and Conditioning Association","10648011","","","24149762","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-84905969222" "Chew-Bullock T.S.-Y.; Anderson D.I.; Hamel K.A.; Gorelick M.L.; Wallace S.A.; Sidaway B.","Chew-Bullock, Tracey S.-Y. (55344458600); Anderson, David I. (7410021693); Hamel, Kate A. (9037627500); Gorelick, Mark L. (55257799200); Wallace, Stephen A. (7403227461); Sidaway, Ben (6603683547)","55344458600; 7410021693; 9037627500; 55257799200; 7403227461; 6603683547","Kicking performance in relation to balance ability over the support leg","2012","Human Movement Science","31","6","","1615","1623","8","48","10.1016/j.humov.2012.07.001","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870237350&doi=10.1016%2fj.humov.2012.07.001&partnerID=40&md5=1656c91239dfe2fc261273c63fd1798b","Department of Kinesiology, San Francisco State University, San Francisco, CA 94132, 1600 Holloway Ave., United States; Physical Therapy Program, Husson University, Bangor, ME 04401, One College Circle, United States","Chew-Bullock T.S.-Y., Department of Kinesiology, San Francisco State University, San Francisco, CA 94132, 1600 Holloway Ave., United States; Anderson D.I., Department of Kinesiology, San Francisco State University, San Francisco, CA 94132, 1600 Holloway Ave., United States; Hamel K.A., Department of Kinesiology, San Francisco State University, San Francisco, CA 94132, 1600 Holloway Ave., United States; Gorelick M.L., Department of Kinesiology, San Francisco State University, San Francisco, CA 94132, 1600 Holloway Ave., United States; Wallace S.A., Department of Kinesiology, San Francisco State University, San Francisco, CA 94132, 1600 Holloway Ave., United States; Sidaway B., Physical Therapy Program, Husson University, Bangor, ME 04401, One College Circle, United States","Balance control is presumed to be a fundamental constraint on the organization of skilled movement. The current experiment explored whether single-leg balance ability predicted kicking performance on the other leg. Thirty-eight participants ranging widely in skill kicked a soccer ball with the right and left legs for maximum accuracy and velocity and performed single-leg balance on a force plate for 30. s with the right and left legs. Significant correlations between single-leg balance and kicking accuracy, but not velocity, were found. Left leg balance was more highly correlated than right leg balance with right (dominant) leg kicking accuracy. However, the same pattern of relations was not seen between single-leg balance and left (non-dominant) leg kicking accuracy. These findings provide preliminary support for the importance of balance ability in kicking performance. The importance of balance in the production of athletic skills is discussed and additional experimental paradigms are suggested that might further our knowledge in this area. © 2012 Elsevier B.V.","Balance; Kicking; Motor skills; Posture; Soccer; Stability","Acceleration; Adult; Biomechanics; Distance Perception; Female; Functional Laterality; Humans; Male; Motor Skills; Orientation; Postural Balance; Psychomotor Performance; Soccer; Weight-Bearing; Young Adult; accuracy; adult; article; athletic performance; body equilibrium; female; human; human experiment; leg movement; male; skill; task performance; velocity","Aalto H., Pyykko I., Ilmarinen R., Kahkonen E., Starck J., Postural stability in shooters, Annals of Otology, Rhinology, and Laryngology, 52, pp. 232-238, (1990); Amiel-Tison C., Grenier A., Neurological assessment during the first year of life, (1986); Arend S., Developing the substrates of skillful movement, Motor Skills: Theory into Practice, 4, pp. 1-10, (1981); Banks M.S., Salapatek P., Infant visual perception, Handbook of child psychology, 2, pp. 435-572, (1983); Barfield W.R., Effects of selected kinematic and kinetic variables on instep kicking with dominant and nondominant limbs, Journal of Human Movement Studies, 29, pp. 251-272, (1995); Beraud P., Gahery Y., Relationships between the force of voluntary leg movements and the associated postural adjustments, Neuroscience Letters, 194, pp. 177-180, (1995); Beraud P., Gahery Y., Posturo-kinetic effects on kicking movements of a lack of initial ground support under the moving leg, Neuroscience Letters, 226, pp. 5-8, (1997); Bertenthal B., von Hofsten C., Eye, head and trunk control: The foundation for manual development, Neuroscience and Biobehavioral Reviews, 22, pp. 515-520, (1998); Bril B., Breniere Y., Postural requirements and progression velocity in young walkers, Journal of Motor Behavior, 24, pp. 105-116, (1992); Bruininks R.H., Bruininks-Oseretsky test of motor proficiency, (1978); Butterfield S.A., Loovis E.M., Influence of age, sex, balance, and sport participation on development of kicking by children in grades K-8, Perceptual and Motor Skills, 79, pp. 691-697, (1994); DeOreo K.L., Keogh J., Performance of fundamental motor tasks, A textbook of motor development, pp. 76-91, (1980); Drowatzky J.N., Zuccato J.C., Interrelationships between selected measures of static and dynamic balance, Research Quarterly, 38, pp. 509-510, (1967); Era P., Konttinen N., Mehto P., Saarela P., Lyytinen H., Postural stability and skilled performance. A study on top-level and naïve rifle shooters, Journal of Biomechanics, 29, pp. 301-306, (1996); Espenschade A.S., Eckert H.D., Motor development, (1980); Ferdinands R., Marshal R.N., Kersting U., Centre of mass kinematics of fast bowling in cricket, Sports Biomechanics, 9, pp. 139-152, (2010); Gibson E.J., Pick A.D., An ecological approach to perceptual learning and development, (2000); Goldie P.A., Bach T.M., Evans O.M., Force platform measures for evaluating postural control: Reliability and validity, Archives of Physical Medicine and Rehabilitation, 70, pp. 510-517, (1989); Goldie P.A., Evans O.M., Bach T.M., Steadiness in one-legged stance. Development of a reliable force-platform testing procedure, Archives of Physical Medicine and Rehabilitation, 73, pp. 348-354, (1992); Grenier A., Expression of liberated motor activity (LMA) following manual immobilization of the head, Neurological evaluation of the newborn and the infant, pp. 87-109, (1983); Hahn T., Foldspang A., Vestergaard E., Ingemann-Hansen T., One-leg standing balance and sports activity, Scandinavian Journal of Medicine and Science in Sports, 9, pp. 15-18, (1999); Hancock G.R., Butler M.S., Fischman M.G., On the problem of two-dimensional error scores: Measures and analyses of accuracy, bias, and consistency, Journal of Motor Behavior, 27, pp. 241-250, (1995); Hatzitaki V., Amiridis I.G., Arabatzi F., Aging effects on postural responses to self-imposed balance perturbations, Gait & Posture, 22, pp. 250-257, (2005); Henry F.M., Specificity vs. generality in learning motor skill, Classical studies on physical activity, pp. 328-331, (1968); Herpin G., Gauchard G.C., Lion A., Collet P., Keller D., Perrin P.P., Sensorimotor specificities in balance control of expert fencers and pistol shooters, Journal of Electromyography and Kinesiology, 20, pp. 162-169, (2010); Hopkins B., Ronnqvist L., Facilitating postural control: Effects on the reaching behavior of 6-month-old infants, Developmental Psychobiology, 40, pp. 168-182, (2002); Howell D.C., Fundamental statistics for the behavioral sciences, (2010); Hudson J.L., Prediction of basketball skill using biomechanical variables, Research Quarterly for Exercise and Sport, 56, pp. 115-121, (1985); Hrysomallis C., McLaughlin P., Goodman C., Relationship between static and dynamic balance tests among elite Australian footballers, Journal of Science & Medicine in Sport, 9, pp. 288-291, (2006); Jouen F., Lepecq J., Gapenne O., Frames of reference underlying early movement coordination, The development of coordination in infancy, pp. 237-263, (1993); Le Clair K., Riach C., Postural stability measures: What to measure and for how long, Clinical Biomechanics, 11, pp. 176-178, (1996); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, pp. 805-817, (2010); Lees A., Nolan L., Biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (1998); Massion J., Deat A., Two modes of coordination between movement and posture, Tutorials in motor neuroscience, pp. 199-208, (1991); Orloff H., Sumida B., Chow J., Habibi L., Fujino A., Kramer B., Ground reaction forces and kinematics of plant leg position during instep kicking in male and female collegiate soccer players, Sports Biomechanics, 7, pp. 238-247, (2008); Provins K.A., The specificity of motor skill and manual asymmetry: A review of the evidence and its implications, Journal of Motor Behavior, 29, pp. 183-192, (1997); Reed E.S., Changing theories of postural development, Development of posture and gait across the lifespan, pp. 3-24, (1989); Rochat P., Self-sitting and reaching in 5- to 8-month-old infants: The impact of posture and its development on early eye-hand coordination, Journal of Motor Behavior, 24, pp. 210-220, (1992); Rochat P., Bullinger A., Posture and functional action in infancy, Early child development in the French tradition, pp. 15-34, (1994); Rodano R., Tavana R., Three-dimensional analysis of instep kick in professional soccer players, Science and football II, pp. 357-361, (1993); Schaefer S.Y., Haaland K.Y., Sainburg R.L., Dissociation of initial trajectory and final position errors during visuomotor adaptation following unilateral stroke, Brain Research, 1298, pp. 78-91, (2009); Schaefer S.Y., Haaland K.Y., Sainburg R.L., Hemispheric specialization and functional impact of ipsilesional deficits in movement coordination and accuracy, Neuropsychologia, 47, pp. 2953-2966, (2009); Stuart D.G., Integration of posture and movement: Contributions of Sherrington, Hess, and Bernstein, Human Movement Science, 24, pp. 621-643, (2005); Thelen E., Smith L.B., A dynamic systems approach to the development of cognition and action, (1994); Thelen E., Ulrich B.D., Hidden skills: A dynamic systems analysis of treadmill stepping during the first year, Monographs of the Society for Research in Child Development, 56, 1, (1991); Thelen E., Vereijken B., Training infant treadmill stepping: The role of individual pattern stability, Developmental Psychobiology, 30, pp. 89-102, (1997); Tropp H., Ekstrand J., Gillquist J., Factors affecting stabilometry recordings of single limb stance, American Journal of Sports Medicine, 12, pp. 185-188, (1984); Ulrich B.D., Ulrich D.A., The role of balancing ability in performance of fundamental motor skills in 3-, 4-, and 5-year-old children, Motor development: Current selected research, pp. 87-97, (1985); Wang J., Sainburg R.L., The dominant and nondominant arms are specialized for stabilizing different features of task performance, Experimental Brain Research, 178, pp. 565-570, (2007); Wickstrom R.L., Fundamental motor patterns, (1983); Williams H.G., Perceptual and motor development, (1983); Woollacott M.H., Shumway-Cook A., Changes in postural control across the life span. A systems approach, Physical Therapy, 70, pp. 799-807, (1990)","D.I. Anderson; Department of Kinesiology, San Francisco State University, San Francisco, CA 94132, 1600 Holloway Ave., United States; email: danders@sfsu.edu","","","18727646","","HMSCD","22939850","English","Hum. Mov. Sci.","Article","Final","","Scopus","2-s2.0-84870237350" "Barreira P.; Robinson M.A.; Drust B.; Nedergaard N.; Raja Azidin R.M.F.; Vanrenterghem J.","Barreira, Paulo (56664283800); Robinson, Mark A. (24299659200); Drust, Barry (8076138400); Nedergaard, Niels (44061667300); Raja Azidin, Raja Mohammed Firhad (42862343900); Vanrenterghem, Jos (6506257376)","56664283800; 24299659200; 8076138400; 44061667300; 42862343900; 6506257376","Mechanical Player Load™ using trunk-mounted accelerometry in football: Is it a reliable, task- and player-specific observation?","2017","Journal of Sports Sciences","35","17","","1674","1681","7","46","10.1080/02640414.2016.1229015","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84986212736&doi=10.1080%2f02640414.2016.1229015&partnerID=40&md5=587dd64be21883c0b63f1fa2cacdc34b","Sport Sciences, Liverpool John Moores University, Liverpool, United Kingdom","Barreira P., Sport Sciences, Liverpool John Moores University, Liverpool, United Kingdom; Robinson M.A., Sport Sciences, Liverpool John Moores University, Liverpool, United Kingdom; Drust B., Sport Sciences, Liverpool John Moores University, Liverpool, United Kingdom; Nedergaard N., Sport Sciences, Liverpool John Moores University, Liverpool, United Kingdom; Raja Azidin R.M.F., Sport Sciences, Liverpool John Moores University, Liverpool, United Kingdom; Vanrenterghem J., Sport Sciences, Liverpool John Moores University, Liverpool, United Kingdom","The aim of the present study was to examine reliability and construct convergent validity of Player Load™ (PL) from trunk-mounted accelerometry, expressed as a cumulative measure and an intensity measure (PL · min– 1). Fifteen male participants twice performed an overground football match simulation that included four different multidirectional football actions (jog, side cut, stride and sprint) whilst wearing a trunk-mounted accelerometer inbuilt in a global positioning system unit. Results showed a moderate-to-high reliability as indicated by the intra-class correlation coefficient (0.806–0.949) and limits of agreement. Convergent validity analysis showed considerable between-participant variation (coefficient of variation range 14.5–24.5%), which was not explained from participant demographics despite a negative association with body height for the stride task. Between-task variations generally showed a moderate correlation between ranking of participants for PL (0.593–0.764) and PL · min– 1 (0.282–0.736). It was concluded that monitoring PL® in football multidirectional actions presents moderate-to-high reliability, that between-participant variability most likely relies on the individual’s locomotive skills and not their anthropometrics, and that the intensity of a task expressed by PL · min– 1 is largely related to the running velocity of the task. © 2016 Informa UK Limited, trading as Taylor & Francis Group.","Accelerometry; football; reliability; validity","Acceleration; Accelerometry; Adult; Anthropometry; Biomechanical Phenomena; Geographic Information Systems; Humans; Jogging; Male; Motor Skills; Reproducibility of Results; Soccer; Task Performance and Analysis; Torso; acceleration; accelerometry; adult; anthropometry; biomechanics; geographic information system; human; jogging; male; motor performance; physiology; procedures; reproducibility; soccer; task performance; trunk","Atkinson G., Nevill A.M., Statistical methods for assessing measurement error (Reliability) in variables relevant to sports medicine, Sports Medicine, 26, 4, pp. 217-238, (1998); Azidin R.M.F.R., Sankey S., Drust B., Robinson M., Vanrenterghem J., Effects of treadmill versus overground soccer match simulations on biomechanical markers of anterior cruciate ligament injury risk in side cutting, Journal of Sports Sciences, 33, 13, pp. 1332-1341, (2015); Barrett S., Midgley A., Lovell R., PlayerLoad™: Reliability, convergent validity, and influence of unit position during treadmill running, InternationalJournal of Sports Physiology and Performance, 9, 6, pp. 945-952, (2014); Barrett S., Midgley A.W., Towlson C., Garret A., Portas M., Lovell R., Within-match playerload™ patterns during a simulated soccer match: Potential implications for unit positioning and fatigue management, International Journal of Sports Physiology and Performance, 11, 1, pp. 135-140, (2016); Bloomfield J., Polman R., Odononghue P., Physical demands pf different positions in FA Premier League soccer, Journal of Sports Science and Medicine, 6, pp. 63-70, (2007); Bobbert M.F., Schamhardt H.C., Nigg B.M., Calculation of vertical ground reaction force estimates during running from positional data, Journal of Biomechanics, 24, 12, pp. 1095-1105, (1991); Boyd J.L., Ball K., Aughey R.J., The reliability of MinimaxX accelerometers for measuring physical activity in Australian football, International Journal of Sports Physiology and Performance, 6, pp. 311-321, (2011); Carling C., Analysis of physical activity profiles when running with the ball in a professional soccer team, Journal of Sports Sciences, 28, 3, pp. 319-326, (2010); Colby M.J., Dawson B., Heasman J., Rogalski B., Gabbett T.J., Accelerometer and GPS-derived running loads and injury risk in elite Australian footballers, Journal of Strength and Conditioning Research, 28, 8, pp. 2244-2252, (2014); Derrick T.R., Caldwell G.E., Hamill J., Modeling the stiffness characteristics of the human body while running with various stride lengths, Journal of Applied Biomechanics, 16, pp. 36-51, (2000); Derrick T.R., Hamill J., Caldwell G.E., Energy absorption of impacts during running at various stride lengths, Medicine & Science in Sports & Exercise, 30, 1, pp. 128-135, (1998); Ehrmann F.E., Duncan C.S., Sindhuase D., Franzen W.N., Greene D.A., GPS and injury prevention in professional soccer, Journal of Strength and Conditioning Research, 30, 2, pp. 360-367, (2015); Hopkins W.G., Measures of reliability in sports medicine and science, Sports Medicine, 30, 1, pp. 1-15, (2000); Kelly S.J., Murphy A.J., Watsford M.L., Austin D., Rennie M., Reliability and validity of sports accelerometers during static and dynamic testing, International Journal of Sports Physiology and Performance, 10, pp. 106-111, (2015); Lovell R., Knapper B., Small K., Physiological responses to SAFT90: A new soccer-specific match simulation, (2008); Marshall P.W., Lovell R., Jeppesen G.K., Andersen K., Siegler J.C., Hamstring muscle fatigue and central motor output during a simulated soccer match, PLoS One, 9, 7, (2014); Mercer J.A., Bezodis N.E., Russell M., Purdy A., DeLion D., Kinetic consequencees of constraining running behaviour, Journal of Sports Science and Medicine, 4, pp. 144-152, (2005); Mercer J.A., Devita P., Derrick T.R., Bates B.T., Individual effects of stride length and frequency on shock attenuation during running, Medicine & Science in Sports & Exercise, 35, 2, pp. 307-313, (2003); Rampinini E., Impellizzeri F.M., Castagnac C., Coutts A.J., Wisloff U., Technical performance during soccer matches of the Italian Serie A league: Effect of fatigue and competitive level, Journal of Science and Medicine in Sport, 12, pp. 227-233, (2009); Schache A.G., Dorn T.W., Williams G.P., Brown N.A., Pandy M.G., Lower-limb muscular strategies for increasing running speed, Journal of Orthopaedic & Sports Physical Therapy, 44, 10, pp. 813-824, (2014); Silder A., Besier T., Delp S., Running with a load increases leg stiffness, Journal of Biomechanics, 48, pp. 1003-1008, (2015); Varley M.C., Aughey R.J., Acceleration profiles in elite Australian soccer, International Journal of Sports Medicine, 34, pp. 34-39, (2013); Wundersitz D.W.T., Netto K.J., Aisbett B., Gastin P.B., Validity of an upper-body-mounted accelerometer to measure peak vertical and resultant force during running and change-of-direction tasks, Sports Biomechanics, 12, 4, pp. 403-412, (2013); Zanetti E.M., Bignardi C., Franceschini G., Audenino A.L., Amateur football pitches: Mechanical properties of the natural ground and of different artificial turf infills and their biomechanical implications, Journal of Sports Sciences, 31, 7, pp. 767-778, (2013)","P. Barreira; Sport Sciences, Liverpool John Moores University, Liverpool, United Kingdom; email: paulobarreiragmr@gmail.com","","Routledge","02640414","","JSSCE","27598850","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84986212736" "DiCesare C.A.; Montalvo A.; Barber Foss K.D.; Thomas S.M.; Hewett T.E.; Jayanthi N.A.; Myer G.D.","DiCesare, Christopher A. (55620685100); Montalvo, Alicia (56397894400); Barber Foss, Kim D. (6507308390); Thomas, Staci M. (55772425700); Hewett, Timothy E. (7005201943); Jayanthi, Neeru A. (13405041000); Myer, Gregory D. (6701852696)","55620685100; 56397894400; 6507308390; 55772425700; 7005201943; 13405041000; 6701852696","Sport specialization and coordination differences in multisport adolescent female basketball, soccer, and volleyball athletes","2019","Journal of Athletic Training","54","10","","1105","1114","9","58","10.4085/1062-6050-407-18","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85073615353&doi=10.4085%2f1062-6050-407-18&partnerID=40&md5=cc6ddd3f44441982c2e768e34b8a60ae","SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, MLC 10001, Cincinnati, 45229, OH, United States; College of Health Solutions, Arizona State University, Phoenix, United States; Biomechanics Laboratories and Sports Medicine Research Center, Mayo Clinic, Minneapolis, MN, United States; School of Medicine, Emory University, Atlanta, GA, United States","DiCesare C.A., SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, MLC 10001, Cincinnati, 45229, OH, United States; Montalvo A., College of Health Solutions, Arizona State University, Phoenix, United States; Barber Foss K.D., SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, MLC 10001, Cincinnati, 45229, OH, United States; Thomas S.M., SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, MLC 10001, Cincinnati, 45229, OH, United States; Hewett T.E., Biomechanics Laboratories and Sports Medicine Research Center, Mayo Clinic, Minneapolis, MN, United States; Jayanthi N.A., School of Medicine, Emory University, Atlanta, GA, United States; Myer G.D., SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, MLC 10001, Cincinnati, 45229, OH, United States","Context: Early sport specialization, or the participation in 1 sport year-round to the exclusion of all others, is a growing concern in youth athletics because of its possible association with musculoskeletal injury. The underlying injury risk may be the result of coordination differences that sport-specialized athletes have been speculated to exhibit relative to multisport athletes; however, little evidence exists to support or refute this notion. Objective: To examine relative hip- and knee-joint angular-motion variability among adolescent sport-specialized and multisport female adolescent athletes to determine how sport specialization may affect coordination. Design: Cohort study. Setting: Research laboratory. Patients or Other Participants: A total of 366 sport-specialized and 366 multisport adolescent female basketball, soccer, and volleyball players. Intervention(s): Drop-vertical-jump (DVJ) assessment. Main Outcome Measure(s): Average coupling-angle variability (CAV) for hip flexion and knee flexion, knee flexion and ankle flexion, hip flexion and knee abduction, knee flexion and knee abduction, knee flexion and knee internal rotation, and knee abduction and knee internal rotation. Results: The sport-specialized group exhibited increased coupling variability in dominant-limb hip flexion and knee flexion (P =.015), knee flexion and knee abduction (P =.014), and knee flexion and knee internal rotation (P =.048) while landing during the DVJ, although they had small effect sizes (η2 = 0.010, 0.010, and 0.007, respectively). No differences were present between groups for any of the other CAV measures of the dominant limb, and no differences were found for any CAV measures of the nondominant limb (all P values >.05). Conclusions: Sport specialization was associated with increased variability of critical hip- and knee-joint couplings responsible for effective landing during the DVJ. Altered coordination strategies that involve the hip and knee joints may underlie unstable landings, inefficient force-absorption strategies, or greater contact forces that can place the lower extremities at risk for injury (or a combination of these). © by the National Athletic Trainers' Association, Inc","Early specialization; Motor skills; Overuse injuries; Youth sports","Adolescent; Ataxia; Athletic Injuries; Basketball; Biomechanical Phenomena; Cohort Studies; Female; Hip Joint; Humans; Knee Joint; Male; Risk Assessment; Risk Factors; Soccer; Specialization; United States; Volleyball; Young Adult; Youth Sports; adolescent; ataxia; basketball; biomechanics; cohort analysis; complication; female; hip; human; injury; knee; male; pathophysiology; risk assessment; risk factor; soccer; specialization; sport injury; United States; volleyball; young adult; youth sport","DiFiori J.P., Benjamin H.J., Brenner J.S., Et al., Overuse injuries and burnout in youth sports: A position statement from the American Medical Society for Sports Medicine, Br J Sports Med, 48, 4, pp. 287-288, (2014); Malina R.M., Early sport specialization: Roots, effectiveness, risks, Curr Sports Med Rep, 9, 6, pp. 364-371, (2010); Brenner J.S., Overuse injuries, overtraining, and burnout in child and adolescent athletes, Pediatrics, 119, 6, pp. 1242-1245, (2007); Gould D., The professionalization of youth sports: It's time to act!, Clin J Sport Med, 19, 2, pp. 81-82, (2009); Jayanthi N., Pinkham C., Dugas L., Patrick B., Labella C., Sports specialization in young athletes: Evidence-based recommendations, Sports Health, 5, 3, pp. 251-257, (2013); Jayanthi N.A., LaBella C.R., Fischer D., Pasulka J., Dugas L.R., Sports-specialized intensive training and the risk of injury in young athletes: A clinical case-control study, Am J Sports Med, 43, 4, pp. 794-801, (2015); Hall R., Barber Foss K., Hewett T.E., Myer G.D., Sport specialization's association with an increased risk of developing anterior knee pain in adolescent female athletes, J Sport Rehabil, 24, 1, pp. 31-35, (2015); McGuine T.A., Post E.G., Hetzel S.J., Brooks M.A., Trigsted S., Bell D.R., A prospective study on the effect of sport specialization on lower extremity injury rates in high school athletes, Am J Sports Med, 45, 12, pp. 2706-2712, (2017); Post E.G., Trigsted S.M., Riekena J.W., Et al., The association of sport specialization and training volume with injury history in youth athletes, Am J Sports Med, 45, 6, pp. 1405-1412, (2017); Pasulka J., Jayanthi N., McCann A., Dugas L.R., LaBella C., Specialization patterns across various youth sports and relationship to injury risk, Phys Sportsmed, 45, 3, pp. 344-352, (2017); Olsen S.J., Fleisig G.S., Dun S., Loftice J., Andrews J.R., Risk factors for shoulder and elbow injuries in adolescent baseball pitchers, Am J Sports Med, 34, 6, pp. 905-912, (2006); Gullich A., Emrich E., Evaluation of the support of young athletes in the elite sports system, Eur J Sport Soc, 3, 2, pp. 85-108, (2006); Carlson R., The socialization of elite tennis players in Sweden: An analysis of the players' backgrounds and development, Sociol Sport J, 5, 3, pp. 241-256, (1988); Hulteen R.M., Morgan P.J., Barnett L.M., Stodden D.F., Lubans D.R., Development of foundational movement skills: A conceptual model for physical activity across the lifespan, Sports Med, 48, 7, pp. 1533-1540, (2018); Hamill J., Van Emmerik R.E., Heiderscheit B.C., Li L., A dynamical systems approach to lower extremity running injuries, Clin Biomech (Bristol, Avon), 14, 5, pp. 297-308, (1999); Cunningham T.J., Mullineaux D.R., Noehren B., Shapiro R., Uhl T.L., Coupling angle variability in healthy and patellofemoral pain runners, Clin Biomech (Bristol, Avon), 29, 3, pp. 317-322, (2014); Pollard C.D., Stearns K.M., Hayes A.T., Heiderscheit B.C., Altered lower extremity movement variability in female soccer players during side-step cutting after anterior cruciate ligament reconstruction, Am J Sports Med, 43, 2, pp. 460-465, (2015); Gribbin T.C., Slater L.V., Herb C.C., Et al., Differences in hip-knee joint coupling during gait after anterior cruciate ligament reconstruction, Clin Biomech (Bristol, Avon), 32, pp. 64-71, (2016); Turvey M.T., Coordination, Am Psychol, 45, 8, pp. 938-953, (1990); Handford C., Davids K., Bennett S., Button C., Skill acquisition in sport: Some applications of an evolving practice ecology, J Sports Sci, 15, 6, pp. 621-640, (1997); Bartlett R., Wheat J., Robins M., Is movement variability important for sports biomechanists?, Sport Biomech, 6, 2, pp. 224-243, (2007); Hewett T.E., Myer G.D., Kiefer A.W., Ford K.R., Longitudinal increases in knee abduction moments in females during adolescent growth, Med Sci Sports Exerc, 47, 12, pp. 2579-2585, (2015); Hewett T.E., Ford K.R., Xu Y.Y., Khoury J., Myer G.D., Effectiveness of neuromuscular training based on the neuromuscular risk profile, Am J Sports Med, 45, 9, pp. 2142-2147, (2017); Sparrow W.A., Donovan E., Van Emmerik R., Barry E.B., Using relative motion plots to measure changes in intra-limb and inter-limb coordination, J Mot Behav, 19, 1, pp. 115-129, (1987); Chang R., Van Emmerik R., Hamill J., Quantifying rearfoot-forefoot coordination in human walking, J Biomech, 41, 14, pp. 3101-3105, (2008); Vidal A., Wu W., Nakajima M., Becker J., Investigating the constrained action hypothesis: A movement coordination and coordination variability approach, J Mot Behav, 50, 5, pp. 528-537, (2018); Hawkins D., Metheny J., Overuse injuries in youth sports: Biomechanical considerations, Med Sci Sports Exerc, 33, 10, pp. 1701-1707, (2001); Pollard C.D., Sigward S.M., Powers C.M., Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments, Clin Biomech (Bristol, Avon), 25, 2, pp. 142-146, (2010); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Myer G.D., Jayanthi N., Difiori J.P., Et al., Sport specialization, part I: Does early sports specialization increase negative outcomes and reduce the opportunity for success in young athletes?, Sports Health, 7, 5, pp. 437-442, (2015); Ford K.R., Myer G.D., Hewett T.E., Longitudinal effects of maturation on lower extremity joint stiffness in adolescent athletes, Am J Sports Med, 38, 9, pp. 1829-1837, (2010); Ford K.R., Shapiro R., Myer G.D., Van Den Bogert A.J., Hewett T.E., Longitudinal sex differences during landing in knee abduction in young athletes, Med Sci Sports Exerc, 42, 10, pp. 1923-1931, (2010); Faigenbaum A.D., Myer G.D., Farrell A., Et al., Integrative neuromuscular training and sex-specific fitness performance in 7-year-old children: An exploratory investigation, J Athl Train, 49, 2, pp. 145-153, (2014); Faigenbaum A.D., Lloyd R.S., MacDonald J., Myer G.D., Citius, altius, fortius: Beneficial effects of resistance training for young athletes: Narrative review, Br J Sports Med, 50, 1, pp. 3-7, (2016); Myer G.D., Faigenbaum A.D., Ford K.R., Best T.M., Bergeron M.F., Hewett T.E., When to initiate integrative neuromuscular training to reduce sports-related injuries and enhance health in youth?, Curr Sports Med Rep, 10, 3, pp. 157-166, (2011); Myer G.D., Faigenbaum A.D., Chu D.A., Et al., Integrative training for children and adolescents: Techniques and practices for reducing sports-related injuries and enhancing athletic performance, Phys Sportsmed, 39, 1, pp. 74-84, (2011); Myer G.D., Jayanthi N., DiFiori J.P., Et al., Sports specialization, part II: Alternative solutions to early sport specialization in youth athletes, Sports Health, 8, 1, pp. 65-73, (2016); Baker J., Cobley S., Fraser-Thomas J., What do we know about early sport specialization? Not Much!, High Abil Stud, 20, 1, pp. 77-89, (2009); Cote J., Lidor R., Hackfort D., ISSP position stand: To sample or to specialize? Seven postulates about youth sport activities that lead to continued participation and elite performance, Int J Sport Exerc Psychol, 7, 1, pp. 7-17, (2009); Hill G., A Study of Sport Specialization in Midwest High School Athletes [Dissertation], (1987); Cohen J., Statistical Power Analysis for the Behavioral Sciences. 2nd Ed, (1988); Zazulak B.T., Paterno M., Myer G.D., Romani W.A., Hewett T.E., The effects of the menstrual cycle on anterior knee laxity: A systematic review, Sports Med, 36, 10, pp. 847-862, (2006); Andrew N., Wolfe R., Cameron P., Et al., The impact of sport and active recreation injuries on physical activity levels at 12 months post-injury, Scand J Med Sci Sports, 24, 2, pp. 377-385, (2014)","C.A. DiCesare; SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, 3333 Burnet Avenue, MLC 10001, 45229, United States; email: christopher.dicesare@cchmc.org","","National Athletic Trainers' Association Inc.","10626050","","JATTE","31633418","English","J. Athl. Train.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85073615353" "Müller C.; Sterzing T.; Lange J.; Milani T.L.","Müller, Clemens (55728101900); Sterzing, Thorsten (23986270100); Lange, Justin (56883749600); Milani, Thomas L. (6603851133)","55728101900; 23986270100; 56883749600; 6603851133","Comprehensive evaluation of player-surface interaction on artificial soccer turf","2010","Sports Biomechanics","9","3","","193","205","12","42","10.1080/14763141.2010.511679","https://www.scopus.com/inward/record.uri?eid=2-s2.0-78149261374&doi=10.1080%2f14763141.2010.511679&partnerID=40&md5=f021a5a1055b92774830d8a25f07b376","Department of Human Locomotion, Institute of Sport Science, Chemnitz University of Technology, 09107 Chemnitz, Thüringer Weg 11, Germany","Müller C., Department of Human Locomotion, Institute of Sport Science, Chemnitz University of Technology, 09107 Chemnitz, Thüringer Weg 11, Germany; Sterzing T., Department of Human Locomotion, Institute of Sport Science, Chemnitz University of Technology, 09107 Chemnitz, Thüringer Weg 11, Germany; Lange J., Department of Human Locomotion, Institute of Sport Science, Chemnitz University of Technology, 09107 Chemnitz, Thüringer Weg 11, Germany; Milani T.L., Department of Human Locomotion, Institute of Sport Science, Chemnitz University of Technology, 09107 Chemnitz, Thüringer Weg 11, Germany","The purpose of this study was to evaluate the traction characteristics of four different stud configurations on Fédération Internationale de Football Association (FIFA) 2-Star, third-generation artificial soccer turf. The investigated stud configurations were hard ground design, firm ground design, soft ground design, and an experimental prototype. The concept of this study combines performance, perception, biomechanical, and mechanical testing procedures. Twenty-five soccer players took part in the different testing procedures. Variables of this study were: running times, subjective rankings/ratings, ground reaction forces, and mechanical traction properties. Statistical discrimination between the four stud configurations was shown for performance, perception, and biomechanical testing (p <0.05). Unsuited stud configurations for playing on artificial turf are characterized by less plain distributed and pronounced studs.© 2010 Taylor& Francis.","Artificial surface; Perception; Performance; Stud configuration; Traction","Acceleration; Analysis of Variance; Biomechanics; Floors and Floorcoverings; Humans; Male; Perception; Shoes; Soccer; Sports Equipment; Surface Properties; Young Adult; acceleration; adult; analysis of variance; article; biomechanics; building; equipment; human; male; perception; physiology; shoe; sport; surface property","Andersson H., Ekblom B., Krustrup P., Elite football on artificial turf versus natural grass: Movement patterns, technical standards, and player impressions, Journal of Sports Sciences, 26, pp. 113-122, (2008); Bonstingl R.W., Morehouse C.A., Niebel B.W., Torques developed by different types of shoes and various playing surfaces, Journal of Medicine and Science In Sports and Exercise, 7, pp. 127-131, (1975); Brauner T., Sterzing T., Gras N., Milani T., Small changes in the varus alignment of running shoes allow gradual Pronation control, Footwear Science, 1, 2, pp. 103-110, (2009); Coyles V.R., Lake M.J., Patritti B.L., Comparative evaluation of soccer boot traction during cutting manoeuvres - Methodological considerations for field testing, The Engineering In Sport, pp. 183-190, (1998); Ekstrand J., Timpka T., Hagglund M., Risk for injury in elite football played on artificial turf versus natural grass: A prospective two-cohort-study, British Journal of Sports Medicine, 40, pp. 975-980, (2006); (2007); (2008); Fong D.T.P., Hong Y., Li J.X., Human walks carefully when the ground dynamic coefficient of friction drops below 0.41, Safety Science, 47, pp. 1429-1433, (2009); Fuller C.W., Dick R.W., Corlette J., Schmalz R., Comparison of the incidence, nature and cause of injuries sustained on grass and new generation artificial turf by male and female football players. Part 1: Match injuries, British Journal of Sports Medicine, 41, pp. 20-26, (2007); Fuller C.W., Dick R.W., Corlette J., Schmalz R., Comparison of the incidence, nature and cause of injuries sustained on grass and new generation artificial turf by male and female football players. Part 2: Training injuries, British Journal of Sports Medicine, 41, pp. 27-32, (2007); Hennig E.M., Milani T.L., Testmethoden zur Beurteilung von Laufschuhen, Dynamed, 1, pp. 33-35, (1996); Kaila R., Influence of modern studded and bladed soccer boots and sidestep cutting on knee loading during match play conditions, The American Journal of Sports Medicine, 35, pp. 1528-1536, (2007); Krahenbuhl G.S., Speed of movement with varying footwear conditions on synthetic turf and natural grass, Research Quarterly, 45, pp. 28-33, (1974); Lafortune M., Measurement and interpretation of biomechanical, perceptual and mechanical variables, Proceedings I Simpósio Brasilero De Biomecanica Do Calcado, pp. 17-19, (2001); Lambson R.B., Barnhill B.S., Higgins R.W., Football cleat design and its effects on anterior cruciate ligament injuries. A three year prospective study, The American Journal of Sports Medicine, 24, pp. 155-159, (1996); Lees A., The biomechanics of soccer surfaces and equipment, Science and Soccer, pp. 135-150, (1996); Lees A., Kewley P., The demands on the soccer boot, Science and Football II, pp. 335-340, (1993); Livesay G.A., Reda D.R., Nauman E.A., Peak torque and rotational stiffness developed at the shoe- surface interface, The American Journal of Sports Medicine, 34, pp. 415-422, (2006); Luo G., Stergiou P., Worobets J., Nigg B., Stefanyshyn D., Improved footwear comfort reduces oxygen consumption during running, Footwear Science, 1, 1, pp. 5-29, (2009); Morag E., Johnson D., Traction requirements of young soccer players, Proceedings of the V Symposium of Footwear Biomechanics Group, (2001); Muller C., Sterzing T., Kunde S., Milani T.L., Das Fußballspiel auf Kunstrasen und Naturrasen [Soccer on artificial turf and natural grass], 20 Jahre Dvs-Kommission Fußball - Herausforderung Fur Den Fußballsport In Schule Und Sportverein, Beitrage Und Analysen Zum Fußballsport XVI, pp. 172-177, (2009); Muller C., Sterzing T., Milani T.L., Lake M., Influence of different stud configurations on lower extremity kinematics and kinetics during a soccer turning movement, Proceedings of IX Footwear Biomechanics Symposium, (2009); Product Testing and Sensory Evaluation, (2003); Park S.K., Stefanyshyn D.J., Lee J.S., Savage L., The Influence of Soccer Cleat Design On Ankle Joint Moments, (2005); Raghavarao D., Constructions and Combinatorial Problems In Design of Experiments, (1971); Shorten M.R., Hudson B., Himmelsbach J.A., Shoe-surface traction of conventional and in-filled synthetic turf football surfaces, Proceedings XIX International Congress of Biomechanics, pp. 6-11, (2003); Smith N., Dyson R., Janaway L., Ground reaction force measures when running in soccer boots and soccer training shoes on natural turf surface, Sports Engineering, 7, 3, pp. 159-167, (2004); Steffen K., Andersen T.E., Bahr R., Risk of injury on artificial turf and natural grass in young female football players, British Journal of Sports Medicine, 41, pp. 33-37, (2007); Sterzing T., Hennig E.M., Milani T.L., Biomechanical requirements of soccer shoe construction, Orthopadie-Technik, 9, pp. 646-655, (2007); Sterzing T., Muller C., Hennig E.M., Milani T.L., Actual and perceived running performance in soccer shoes: A series of eight studies, Footwear Science, 1, pp. 5-17, (2009); Sterzing T., Muller C., Schwanitz S., Odenwald S., Milani T.L., Discrepancies between mechanical and biomechanical measurements of soccer shoe traction on artificial turf. 26, Symposium of the International Society of Biomechanics In Sports, (2008); Torg J.S., Quedenfeld T.C., Landau S., The shoe-surface interface and its relationship to football knee injuries, Journal of Sports Medicine, 2, pp. 261-269, (1974); Vachon F., Football Boot Soles Configurations and Their Influence Upon Surface Adhesion, (2004); Valiant G.A., Ground reaction forces developed on artificial turf, Science and Football, pp. 406-415, (1987); Yeadon M.R., Kato T., Kerwin D.G., Measuring running speed using photocells, Journal of Sports Science, 17, pp. 249-257, (1999)","C. Müller; Department of Human Locomotion, Institute of Sport Science, Chemnitz University of Technology, 09107 Chemnitz, Thüringer Weg 11, Germany; email: clemens.mueller@hsw.tu-chemnitz.de","","","17526116","","","21162364","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-78149261374" "Ford K.R.; DiCesare C.A.; Myer G.D.; Hewett T.E.","Ford, Kevin R. (7102539333); DiCesare, Christopher A. (55620685100); Myer, Gregory D. (6701852696); Hewett, Timothy E. (7005201943)","7102539333; 55620685100; 6701852696; 7005201943","Real-time biofeedback to target risk of anterior cruciate ligament injury: a technical report for injury prevention and rehabilitation","2015","Journal of sport rehabilitation","Technical Notes 13","","","","","","41","10.1123/jsr.2013-0138","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84974628126&doi=10.1123%2fjsr.2013-0138&partnerID=40&md5=9942babd5823677a0a9a0e6e56207cde","Dept of Physical Therapy, High Point University, High Point, NC, United States","Ford K.R., Dept of Physical Therapy, High Point University, High Point, NC, United States; DiCesare C.A., Dept of Physical Therapy, High Point University, High Point, NC, United States; Myer G.D., Dept of Physical Therapy, High Point University, High Point, NC, United States; Hewett T.E., Dept of Physical Therapy, High Point University, High Point, NC, United States","CONTEXT: Biofeedback training enables an athlete to alter biomechanical and physiological function by receiving biomechanical and physiological data concurrent with or immediately after a task.; OBJECTIVE: To compare the effects of 2 different modes of real-time biofeedback focused on reducing risk factors related to anterior cruciate ligament injury.; DESIGN: Randomized crossover study design.; SETTING: Biomechanics laboratory and sports medicine center.; PARTICIPANTS: Female high school soccer players (age 14.8 ± 1.0 y, height 162.6 ± 6.8 cm, mass 55.9 ± 7.0 kg; n = 4).; INTERVENTION: A battery of kinetic- or kinematic-based real-time biofeedback during repetitive double-leg squats.; MAIN OUTCOME MEASURES: Baseline and posttraining drop vertical jumps were collected to determine if either feedback method improved high injury risk landing mechanics.; RESULTS: Maximum knee abduction moment and angle during the landing was significantly decreased after kinetic-focused biofeedback (P = .04). The reduced knee abduction moment during the drop vertical jumps after kinematic-focused biofeedback was not different (P = .2). Maximum knee abduction angle was significantly decreased after kinetic biofeedback (P < .01) but only showed a trend toward reduction after kinematic biofeedback (P = .08).; CONCLUSIONS: The innovative biofeedback employed in the current study reduced knee abduction load and posture from baseline to posttraining during a drop vertical jump.","","Adolescent; Anterior Cruciate Ligament; Biofeedback, Psychology; Biomechanical Phenomena; Cross-Over Studies; Female; Humans; Kinetics; Knee Injuries; Knee Joint; Posture; Risk Factors; Soccer; Treatment Outcome; Weight-Bearing; adolescent; anterior cruciate ligament; biomechanics; body posture; comparative study; controlled study; crossover procedure; female; human; injuries; kinetics; knee; Knee Injuries; pathophysiology; physiology; procedures; psychophysiology; randomized controlled trial; risk factor; soccer; treatment outcome; weight bearing","","","","","15433072","","","24959871","English","J Sport Rehabil","Article","Final","","Scopus","2-s2.0-84974628126" "Caccese J.B.; Buckley T.A.; Tierney R.T.; Arbogast K.B.; Rose W.C.; Glutting J.J.; Kaminski T.W.","Caccese, Jaclyn B. (57189060030); Buckley, Thomas A. (25027015000); Tierney, Ryan T. (7004140314); Arbogast, Kristy B. (7003855079); Rose, William C. (57193871976); Glutting, Joseph J. (7004435281); Kaminski, Thomas W. (7005758157)","57189060030; 25027015000; 7004140314; 7003855079; 57193871976; 7004435281; 7005758157","Head and neck size and neck strength predict linear and rotational acceleration during purposeful soccer heading","2018","Sports Biomechanics","17","4","","462","476","14","63","10.1080/14763141.2017.1360385","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85031506320&doi=10.1080%2f14763141.2017.1360385&partnerID=40&md5=f9f21b9b32880db61a811828d16f98c4","Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, United States; Department of Kinesiology, Temple University, Philadelphia, PA, United States; Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, Philadelphia, PA, United States; School of Education, University of Delaware, Newark, DE, United States","Caccese J.B., Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, United States; Buckley T.A., Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, United States; Tierney R.T., Department of Kinesiology, Temple University, Philadelphia, PA, United States; Arbogast K.B., Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, Philadelphia, PA, United States; Rose W.C., Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, United States; Glutting J.J., School of Education, University of Delaware, Newark, DE, United States; Kaminski T.W., Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, United States","There is increasing societal concern about the long-term effects of repeated impacts from soccer heading, but there is little information about ways to reduce head impact severity. The purpose of this study was to identify factors that contribute to head acceleration during soccer heading. One-hundred soccer players completed 12 controlled soccer headers. Peak linear (PLA) and rotational (PRA) accelerations were measured using a triaxial accelerometer and gyroscope. Head acceleration contributing factors were grouped into 3 categories: size (head mass, neck girth), strength (sternocleidomastoid, upper trapezius) and technique [kinematics (trunk, head-to-trunk range-of-motion), sternocleidomastoid and upper trapezius activity]. Multiple regression analyses indicated size variables explained 22.1% of the variance in PLA and 23.3% of the variance in PRA; strength variables explained 13.3% of the variance in PLA and 17.2% of the variance in PRA; technique variables did not significantly predict PLA or PRA. These findings suggest that head and neck size and neck strength predict PLA and PRA. Anthropometric and neck strength measurements should be considered when determining an athlete’s readiness to begin soccer heading. © 2017, © 2017 Informa UK Limited, trading as Taylor & Francis Group.","Concussion; mild traumatic brain injury; paediatric; subconcussion","Acceleration; Adolescent; Anthropometry; Biomechanical Phenomena; Brain Concussion; Chronic Traumatic Encephalopathy; Electromyography; Female; Head; Humans; Male; Muscle Strength; Neck; Neck Muscles; Rotation; Soccer; Time and Motion Studies; Young Adult; acceleration; adolescent; anatomy and histology; anthropometry; biomechanics; brain concussion; chronic traumatic encephalopathy; electromyography; female; head; human; male; muscle strength; neck; neck muscle; pathophysiology; physiology; rotation; soccer; task performance; young adult","Arbogast K.B., Balasubramanian S., Seacrist T., Maltese M.R., Garcia-Espana J.F., Hopely T., Higuchi K., Comparison of kinematic responses of the head and spine for children and adults in low-speed frontal sled tests, Stapp Car Crash Journal, 53, pp. 329-372, (2009); Babbs C.F., Biomechanics of heading a soccer ball: Implications for player safety, The Scientific World Journal, 1, pp. 281-322, (2001); Caccese J.B., Kaminski T.W., Minimizing head acceleration in soccer: A review of the literature, Sports Medicine, 46, pp. 1591-1604, (2016); Cummiskey B., Schiffmiller D., Talavage T.M., Leverenz L., Meyer J.J., Adams D., Nauman E.A., Reliability and accuracy of helmet-mounted and head-mounted devices used to measure head accelerations, Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 231, pp. 144-153, (2016); Dezman Z.D., Ledet E.H., Kerr H.A., Neck strength imbalance correlates with increased head acceleration in soccer heading, Sports Health: A Multidisciplinary Approach, 5, pp. 320-326, (2013); Falla D., Dall'Alba P., Rainoldi A., Merletti R., Jull G., Location of innervation zones of sternocleidomastoid and scalene muscles–A basis for clinical and research electromyography applications, Clinical Neurophysiology, 113, pp. 57-63, (2002); FIFA Big Count 2006: 270 million people active in football, (2007); Funk J.R., Cormier J.M., Bain C.E., Guzman H., Bonugli E., Validation and application of a methodology to calculate head accelerations and neck loading in soccer ball impacts, (2009); Grinberg L.T., Anghinah R., Nascimento C.F., Amaro E., Leite R.P., Martin M.D.G.M., Nitrini R., Chronic traumatic encephalopathy presenting as Alzheimer’s disease in a retired soccer player, Journal of Alzheimer’s Disease, 54, pp. 169-174, (2016); Guskiewicz K.M., Mihalik J.P., Biomechanics of sport concussion: Quest for the elusive injury threshold, Exercise and Sport Sciences Reviews, 39, pp. 4-11, (2011); Gutierrez G.M., Conte C., Lightbourne K., The relationship between impact force, neck strength, and neurocognitive performance in soccer heading in adolescent females, Pediatric Exercise Science, 26, pp. 33-40, (2014); Hales C., Neill S., Gearing M., Cooper D., Glass J., Lah J., Late-stage CTE pathology in a retired soccer player with dementia, Neurology, 83, pp. 2307-2309, (2014); Hermens H.J., Freriks B., Merletti R., Stegeman D., Blok J., Rau G., Hagg G., European recommendations for surface electromyography, Roessingh Research and Development, 8, pp. 13-54, (1999); Higgins M., Tierney R., Caswell S., Driban J., Mansell J., Clegg S., An in vivo model of functional head impact testing in non-helmeted athletes, Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 223, pp. 117-123, (2009); Jensen R.K., Body segment mass, radius and radius of gyration proportions of children, Journal of Biomechanics, 19, pp. 359-368, (1986); Karton C., Oeur R.A., Hoshizaki T.B., Measurement accuracy of head impact monitoring sensor in sport, 34, 1, (2016); Kirkendall D.T., Garrett W.E., Heading in soccer: Intergral skill or grounds for cognitive dysfunction?, Journal of Athletic Training, 36, pp. 328-333, (2001); Maher M.E., Hutchison M., Cusimano M., Comper P., Schweizer T.A., Concussions and heading in soccer: A review of the evidence of incidence, mechanisms, biomarkers and neurocognitive outcomes, Brain Injury, 28, pp. 271-285, (2014); Mansell J., Tierney R.T., Sitler M.R., Swanik K.A., Stearne D., Resistance training and head-neck segment dynamic stabilization in male and female collegiate soccer players, Journal of Athletic Training, 40, pp. 310-319, (2005); Mihalik J.P., Guskiewicz K.M., Marshall S.W., Greenwald R.M., Blackburn J.T., Cantu R.C., Does cervical muscle strength in youth ice hockey players affect head impact biomechanics?, Clinical Journal of Sport Medicine, 21, pp. 416-421, (2011); Parnell D., Cope E., Bailey R., Krustrup P., Curran K., Football and physical health: What do we know?, Sport in Society; Peterson-Kendall F., Kendall-McCreary E., Geise-Provance P., McIntyre-Rodgers M., Romani W., Muscles testing and function with posture and pain, (2005); Plagenhoef S., Evans F.G., Abdelnour T., Anatomical data for analyzing human motion, Research Quarterly for Exercise and Sport, 54, pp. 169-178, (1983); Rooney M., Ultimate warrior workouts (training for warriors): Fitness secrets of the martial arts, (2010); Rowson S., Duma S.M., Beckwith J.G., Chu J.J., Greenwald R.M., Crisco J.J., Maerlender A.C., Rotational head kinematics in football impacts: An injury risk function for concussion, Annals of Biomedical Engineering, 40, pp. 1-13, (2012); Seacrist T., Arbogast K.B., Maltese M.R., Felipe Garcia-Espana J., Lopez-Valdes F.J., Kent R.W., Balasubramanian S., Kinetics of the cervical spine in pediatric and adult volunteers during low speed frontal impacts, Journal of Biomechanics, 45, pp. 99-106, (2012); Shewchenko N., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football. Part 1: Development of biomechanical methods to investigate head response, British Journal of Sports Medicine, 39, pp. i10-i25, (2005); Tarnutzer A.A., Straumann D., Brugger P., Feddermann-Demont N., Persistent effects of playing football and associated (subconcussive) head trauma on brain structure and function: A systematic review of the literature, British Journal of Sports Medicine; Tierney R.T., Higgins M., Caswell S.V., Brady J., McHardy K., Driban J.B., Darvish K., Sex differences in head acceleration during heading while wearing soccer headgear, Journal of Athletic Training, 43, pp. 578-584, (2008); Tierney R.T., Sitler M.R., Swanik C.B., Swanik K.A., Higgins M., Torg J., Gender differences in head???Neck segment dynamic stabilization during head acceleration, Medicine and Science in Sports and Exercise, 37, pp. 272-279, (2005); Yang Y.T., Baugh C.M., US youth soccer concussion policy: Heading in the right direction, JAMA Pediatrics, 170, pp. 413-414, (2016)","J.B. Caccese; Department of Kinesiology and Applied Physiology, University of Delaware, Newark, United States; email: jcaccese@udel.edu","","Routledge","14763141","","","29037111","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-85031506320" "Andersen T.B.; Dörge H.C.","Andersen, T.B. (7201524099); Dörge, H.C. (36957167700)","7201524099; 36957167700","The influence of speed of approach and accuracy constraint on the maximal speed of the ball in soccer kicking","2011","Scandinavian Journal of Medicine and Science in Sports","21","1","","79","84","5","49","10.1111/j.1600-0838.2009.01024.x","https://www.scopus.com/inward/record.uri?eid=2-s2.0-78651376526&doi=10.1111%2fj.1600-0838.2009.01024.x&partnerID=40&md5=1e03ef7e5c87340651d9fa66f03923d4","Department of Sport Science, University of Aarhus, Aarhus, Denmark","Andersen T.B., Department of Sport Science, University of Aarhus, Aarhus, Denmark; Dörge H.C., Department of Sport Science, University of Aarhus, Aarhus, Denmark","The kicking skill of the individual player is of great importance in soccer, and two parameters can be identified as being important in soccer kicking - achieving high speed of the ball and accuracy of performance. The purpose of the current study was to examine the influence of different speeds of approach on the maximal speed of the ball when kicking a stationary ball, and to examine the influence of accuracy of performance on the maximal speed of the ball relevant to a penalty kick. Seven male soccer players kicked for maximal speed of the ball (I) with a self-selected angle and speed of approach, (II) with accuracy demand placed on the subjects, (III) with a straight-line approach of different velocities ranging from 0 m/s to maximal running speed. The maximal speed of the ball was between 28.60 and 34.48 m/s. An accuracy constraint caused the speed of the ball to decline to 85%. With a straight-line approach, the maximal speed of the ball was between 25.64 and 32.26 m/s. When the subjects approached the ball at speeds other than the self-selected speed of approach, the speed of the ball declined, indicating a subject-specific optimal speed of approach. © 2009 John Wiley & Sons A/S.","Biomechanics; Kicking; Soccer","Adult; Biomechanics; Denmark; Humans; Lower Extremity; Male; Motor Skills; Muscle Contraction; Muscle, Skeletal; Pilot Projects; Soccer; adult; article; biomechanics; Denmark; human; leg; male; motor performance; muscle contraction; physiology; pilot study; skeletal muscle; sport","Anderson D., Sidaway B., Coordination changes associated with practice of a soccer kick, Res Q Exerc Sport, 65, pp. 93-99, (1994); Asami T., Nolte V., Biomechanics VIII-B, Analysis od powerful ball kicking, pp. 695-700, (1983); Asami T., Togari H., Kikichi T., Biomechanics V-B, Energy efficiency of ball kicking, pp. 135-140, (1976); Asmussen E., Bonde-Petersen F., Storage of elastic energy in man, Acta Physiolog Scand, 91, pp. 385-392, (1974); Bull Andersen T., Dorge H., Thomsen F., Collisions in soccer kicking, Sports Eng, 2, pp. 121-125, (1999); Cavagna G., Storage and utilization of elastic energy in skeletal muscle, Exerc Sport Sci Rev, 5, pp. 89-129, (1977); Dorge H., Bull Andersen T., Sorensen H., Simonsen E., Aagaard H., Dyhre-Poulsen P., Klausen K., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scand J Med Sci Sports, 9, pp. 195-200, (1999); Dunn E., Putnam C., Biomechanics XI-B, The influence of lower leg motion on thigh deceleration in kicking, pp. 787-790, (1988); Etnyre B., Accuracy characteristics of throwing as a result of maximum force effort, Perceptual and Motor Skills, 86, pp. 1211-1217, (1998); Fenn W., The relation between the work performed and the energy liberated in muscular contraction, J Physiol (London), 58, pp. 373-395, (1924); Hay J., The biomechanics of sports techniques, (1993); Isokawa M., Lees A., Science and football, A biomechanical analysis of the instep kick motion in soccer, pp. 449-455, (1988); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J Sports Sci Med, 6, pp. 154-165, (2007); Lees A., Nolan L., The biomechanics of soccer, a review, 16, pp. 211-234, (1998); Luhtanen P., Science and football, Kinematics and kinetics of maximal instep kicking in junior soccer players, pp. 441-448, (1988); Opavsky P., Science and football, An investigation of linear and angular kinematics of the leg in two types of soccer kick, pp. 460-467, (1988); Plagenhoef S., The patterns of human motion, (1971); Plamondon R., Alimi A., Speed/Accuracy trade-offs in target-directed movements, Behav Brain Sci, 20, pp. 279-303, (1997); Putnam C., Biomechanics VIII-B, Interaction between segments during a kicking motion, pp. 688-694, (1983); Putnam C.A., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Med Sci Sports Exerc, 23, pp. 130-144, (1991); Sorensen H., Simonsen E., van den Bogert A., International society of biomechanics XVIIth congress - book of abstracts, Influence of approach velocity on long jump performance, (1999); Teixeira L., Kinematics of kicking as a function of different sources of constraint on accuracy, Percept Mot Skills, 88, pp. 785-789, (1999); Winter D.A., (1990); Yeadon M., Kato T., Kerwin D., Measuring running speed using photocells, J Sports Sci, 17, pp. 249-257, (1999); Zernicke R., Roberts E., Lower extremity forces and torques during systematic variation of non weight bearing motion, Med Sci Sports Exerc, 10, pp. 21-26, (1978)","T.B. Andersen; Department of Sport Science, University of Aarhus, Dk-8000 Aarhus C, Dalgas Avenue 4, Denmark; email: tbull@idraet.au.dk","","","16000838","","SMSSE","19883390","English","Scand. J. Med. Sci. Sports","Article","Final","","Scopus","2-s2.0-78651376526" "Jiménez-Reyes P.; García-Ramos A.; Cuadrado-Peñafiel V.; Párraga-Montilla J.A.; Morcillo-Losa J.A.; Samozino P.; Morin J.-B.","Jiménez-Reyes, Pedro (36696240200); García-Ramos, Amador (56215734600); Cuadrado-Peñafiel, Victor (55767469600); Párraga-Montilla, Juan A. (57217185254); Morcillo-Losa, José A. (56335826900); Samozino, Pierre (14024773800); Morin, Jean-Benoît (55917329600)","36696240200; 56215734600; 55767469600; 57217185254; 56335826900; 14024773800; 55917329600","Differences in sprint mechanical force–velocity profile between trained soccer and futsal players","2019","International Journal of Sports Physiology and Performance","14","4","","478","485","7","50","10.1123/ijspp.2018-0402","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063273296&doi=10.1123%2fijspp.2018-0402&partnerID=40&md5=5d671734790385a2418a79b4762f3a93","Center for Sport Studies, King Juan Carlos University, Madrid, Spain; Faculty of Sport, Catholic University of San Antonio, Murcia, Spain; Dept of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain; Dept of Sports Sciences and Physical Conditioning, Faculty of Education, CIEDE, Catholic University of the Most Holy Conception, Concepción, Chile; Faculty of Physical Activity and Sport Sciences, Technical University of Madrid, Madrid, Spain; Dept of Corporal Expression, University of Jaen, Jaén, Spain; Interuniversity Laboratory of Biology and Motricity (EA7424), University of Savoie Mont Blanc, Chambéry, France; Laboratory of Human Motricity, Education, Sport, Health (LAMHESS), Côte d’Azur University, Nice, France; Sports Performance Research Inst New Zealand (SPRINZ), Auckland University of Technology, Auckland, New Zealand","Jiménez-Reyes P., Center for Sport Studies, King Juan Carlos University, Madrid, Spain, Faculty of Sport, Catholic University of San Antonio, Murcia, Spain; García-Ramos A., Dept of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain, Dept of Sports Sciences and Physical Conditioning, Faculty of Education, CIEDE, Catholic University of the Most Holy Conception, Concepción, Chile; Cuadrado-Peñafiel V., Faculty of Physical Activity and Sport Sciences, Technical University of Madrid, Madrid, Spain; Párraga-Montilla J.A., Dept of Corporal Expression, University of Jaen, Jaén, Spain; Morcillo-Losa J.A., Dept of Corporal Expression, University of Jaen, Jaén, Spain; Samozino P., Interuniversity Laboratory of Biology and Motricity (EA7424), University of Savoie Mont Blanc, Chambéry, France; Morin J.-B., Laboratory of Human Motricity, Education, Sport, Health (LAMHESS), Côte d’Azur University, Nice, France, Sports Performance Research Inst New Zealand (SPRINZ), Auckland University of Technology, Auckland, New Zealand"," Purpose: To compare the sprint mechanical force–velocity (F–V) profile between soccer and futsal players. A secondary aim was, within each sport, to study the differences in sprint mechanical F–V profile between sexes and players of different levels. Methods: A total of 102 soccer players (63 men) and 77 futsal players (49 men) who were competing from the elite to amateur levels in the Spanish league participated in this investigation. The testing procedure consisted of 3 unloaded maximal 40-m sprints. The velocity–time data recorded by a radar device were used to calculate the variables of the sprint acceleration F–V profile (maximal theoretical force [F 0 ], maximal theoretical velocity [V 0 ], maximal power [P max ], decrease in the ratio of horizontal to resultant force [DRF], and maximal ratio of horizontal to resultant force [RFpeak]). Results: Futsal players showed a higher F 0 than soccer players (effect size [ES] range: 0.11–0.74), while V 0 (ES range: −0.48 to −1.15) and DRF (ES range: −0.75 to −1.45) was higher for soccer players. No significant differences were observed between soccer and futsal players for P max (ES range: −0.43 to 0.19) and RFpeak (ES range: −0.49 to 0.30). Men and high-level players presented an overall enhanced F–V profile compared with women and their lower-level counterparts, respectively. Conclusions: The higher F 0 and lower V 0 of futsal players could be caused by the game’s specific demands (larger number of accelerations but over shorter distances than in soccer). These results show that the sprint mechanical F–V profile is able to distinguish between soccer and futsal players. © 2019 Human Kinetics, Inc.","Maximal force; Maximal power; Maximal velocity; Sprint running","Acceleration; Adult; Athletic Performance; Biomechanical Phenomena; Competitive Behavior; Cross-Sectional Studies; Female; Humans; Male; Physical Conditioning, Human; Running; Sex Factors; Soccer; acceleration; adult; article; controlled study; effect size; female; human; human experiment; major clinical study; male; running; soccer player; telecommunication; theoretical study; athletic performance; biomechanics; competitive behavior; cross-sectional study; exercise; physiology; procedures; running; sex factor; soccer","Kunz M., Big count: 265 million playing football, FIFA Magazine, (2007); Faude O., Koch T., Meyer T., Straight sprinting is the most frequent action in goal situations in professional football, J Sports Sci, 30, 7, pp. 625-631, (2012); Mohammed A., Shafizadeh M., Platt G.K., Effects of the level of expertise on the physical and technical demands in futsal, Int J Perform Anal Sport, 14, 2, pp. 473-481, (2014); Taylor J.B., Wright A.A., Dischiavi S.L., Townsend M.A., Marmon A.R., Activity demands during multi-directional team sports: A systematic review, Sports Med, 47, 12, pp. 2533-2551, (2017); Haugen T., Tonnessen E., Hisdal J., Seiler S., The role and development of sprinting speed in soccer, Int J Sports Physiol Perform, 9, 3, pp. 432-441, (2014); Ramirez-Campillo R., Gallardo F., Henriquez-Olguin C., Et al., Effect of vertical, horizontal, and combined plyometric training on explosive, balance, and endurance performance of young soccer players, J Strength Cond Res, 29, 7, pp. 1784-1795, (2015); Yanci J., Castillo D., Iturricastillo A., Ayarra R., Nakamura F.Y., Effects of two different volume-equated weekly distributed short-term plyometric training programs on futsal players’ physical performance, J Strength Cond Res, 31, 7, pp. 1787-1794, (2017); Rumpf M.C., Lockie R.G., Cronin J.B., Jalilvand F., Effect of different sprint training methods on sprint performance over various distances: A brief review, J Strength Cond Res, 30, 6, pp. 1767-1785, (2016); Petrakos G., Morin J.B., Egan B., Resisted sled sprint training to improve sprint performance: A systematic review, Sports Med, 46, 3, pp. 381-400, (2016); Samozino P., Rabita G., Dorel S., Et al., A simple method for measuring power, force, velocity properties, and mechanical effectiveness in sprint running, Scand J Med Sci Sports, 26, 6, pp. 648-658, (2016); Morin J.B., Samozino P., Interpreting power-force-velocity profiles for individualized and specific training, Int J Sports Physiol Perform, 11, 2, pp. 267-272, (2016); Romero-Franco N., Jimenez-Reyes P., Castano-Zambudio A., Et al., Sprint performance and mechanical outputs computed with an iPhone app: Comparison with existing reference methods, Eur J Sport Sci, 17, 4, pp. 386-392, (2017); Morin J.B., Edouard P., Samozino P., Technical ability of force application as a determinant factor of sprint performance, Med Sci Sports Exerc, 43, 9, pp. 1680-1688, (2011); Bradley P.S., Carling C., Gomez Diaz A., Et al., Match performance and physical capacity of players in the top three competitive standards of English professional soccer, Hum Mov Sci, 32, 4, pp. 808-821, (2013); Rampinini E., Impellizzeri F.M., Castagna C., Coutts A.J., Wisloff U., Technical performance during soccer matches of the Italian Serie A league: Effect of fatigue and competitive level, J Sci Med Sport, 12, 1, pp. 227-233, (2009); Castellano J., Alvarez-Pastor D., Bradley P.S., Evaluation of research using computerised tracking systems (Amisco and Prozone) to ana-lyse physical performance in elite soccer: A systematic review, Sports Med, 44, 5, pp. 701-712, (2014); Bangsbo J., Iaia F.M., Krustrup P., The Yo-Yo intermittent recovery test: A useful tool for evaluation of physical performance in intermittent sports, Sports Med, 38, 1, pp. 37-51, (2008); Naser N., Ali A., Macadam P., Physical and physiological demands of futsal, J Exerc Sci Fit, 15, 2, pp. 76-80, (2017); Barbero-Alvarez J.C., Soto V.M., Barbero-Alvarez V., Granda-Vera J., Match analysis and heart rate of futsal players during competition, J Sports Sci, 26, 1, pp. 63-73, (2008); Kraemer W.J., Ratamess N.A., Fundamentals of resistance training: Progression and exercise prescription, Med Sci Sports Exerc, 36, 4, pp. 674-688, (2004); Marcote-Pequeno R., Garcia-Ramos A., Cuadrado-Penafiel V., Gonzalez-Hernandez J.M., Gomez M.A., Jimenez-Reyes P., Association between the force–velocity profile and performance variables obtained in jumping and sprinting in elite female soccer players, Int J Sports Physiol Perform, 14, 2, pp. 209-215, (2019); Cohen J., Statistical Power Analysis for The Behavioral Sciences, (1988); Unveren A., Investigating women futsal and soccer players’ acceleration, speed and agility features, Anthropologist, 21, 1-2, pp. 361-365, (2015); Benvenuti C., Minganti C., Condello G., Capranica L., Tessitore A., Agility assessment in female futsal and soccer players, Medicina, 46, 6, pp. 415-420, (2010); Milanovic Z., Sporis G., Trajkovic N., Fiorentini F., Differences in agility performance between futsal and soccer players, Sport Sci, 2, pp. 55-59, (2011); Slawinski J., Termoz N., Rabita G., Et al., How 100-m event analyses improve our understanding of world-class men’s and women’s sprint performance, Scand J Med Sci Sports, 27, 1, pp. 45-54, (2017); Jones B., Weaving D., Tee J., Et al., Bigger, stronger, faster, fitter: The differences in physical qualities of school and academy rugby union players, J Sports Sci, 36, 21, pp. 2399-2404, (2018); Baker D., Comparison of upper-body strength and power between professional and college-aged rugby league players, J Strength Cond Res, 15, 1, pp. 30-35, (2001); Haugen T., Buchheit M., Sprint running performance monitoring: Methodological and practical considerations, Sports Med, 46, 5, pp. 641-656, (2016); Wisloff U., Castagna C., Helgerud J., Jones R., Hoff J., Strong correlation of maximal squat strength with sprint performance and vertical jump height in elite soccer players, Br J Sports Med, 38, 3, pp. 285-288, (2004); Nakamura F.Y., Pereira L.A., Abad C.C.C., Et al., Differences in physical performance between U-20 and senior top-level Brazilian futsal players, J Sports Med Phys Fitness, 56, 11, pp. 1289-1297, (2015); Shalfawi S.A., Haugen T., Jakobsen T.A., Enoksen E., Tonnessen E., The effect of combined resisted agility and repeated sprint training vs. Strength training on female elite soccer players, J Strength Cond Res, 27, 11, pp. 2966-2972, (2013); Buchheit M., Samozino P., Glynn J.A., Et al., Mechanical determinants of acceleration and maximal sprinting speed in highly trained young soccer players, J Sports Sci, 32, 20, pp. 1906-1913, (2014); Mendiguchia J., Edouard P., Samozino P., Et al., Field monitoring of sprinting power-force-velocity profile before, during and after hamstring injury: Two case reports, J Sports Sci, 34, 6, pp. 535-541, (2016); Mendiguchia J., Samozino P., Brughelli M., Schmikli S., Morin J.B., Mendez-Villanueva A., Progression of mechanical properties during on-field sprint running after returning to sports from a hamstring muscle injury in soccer players, Int J Sports Med, 35, 8, pp. 690-695, (2014); Nagahara R., Morin J.B., Koido M., Impairment of sprint mechanical properties in an actual soccer match: A pilot study, Int J Sports Physiol Perform, 11, 7, pp. 893-898, (2016); Haugen T.A., Soccer seasonal variations in sprint mechanical properties and vertical jump performance, Kinesiology, 50, 1, pp. 102-108, (2018)","P. Jiménez-Reyes; Center for Sport Studies, King Juan Carlos University, Madrid, Spain; email: peterjr49@hotmail.com","","Human Kinetics Publishers Inc.","15550265","","","30300015","English","Int. J. Sport Physiol. Perform.","Article","Final","","Scopus","2-s2.0-85063273296" "De Oliveira Bueno M.J.; Caetano F.G.; Pereira T.J.C.; De Souza N.M.; Moreira G.D.; Nakamura F.Y.; Cunha S.A.; Moura F.A.","De Oliveira Bueno, Murilo José (56387626300); Caetano, Fabio Giuliano (56387021100); Pereira, Tiago Julio Costa (56386852400); De Souza, Nicolau Melo (56386889200); Moreira, Gustavo Damasceno (56386974400); Nakamura, FáBIO Yuzo (8880204300); Cunha, Sergio Augusto (16416879600); Moura, Felipe Arruda (16417087000)","56387626300; 56387021100; 56386852400; 56386889200; 56386974400; 8880204300; 16416879600; 16417087000","Analysis of the distance covered by Brazilian professional futsal players during official matches","2014","Sports Biomechanics","13","3","","230","240","10","71","10.1080/14763141.2014.958872","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84908053185&doi=10.1080%2f14763141.2014.958872&partnerID=40&md5=101a7e0aa53629325ada5e8b89e67907","Laboratory of Applied Biomechanics, State University of Londrina, Londrina, Brazil; Physical Education Department, State University of Londrina, Londrina, Brazil; Laboratory of Instrumentation for Biomechanics, University of Campinas, Campinas, Brazil","De Oliveira Bueno M.J., Laboratory of Applied Biomechanics, State University of Londrina, Londrina, Brazil; Caetano F.G., Laboratory of Applied Biomechanics, State University of Londrina, Londrina, Brazil; Pereira T.J.C., Laboratory of Applied Biomechanics, State University of Londrina, Londrina, Brazil; De Souza N.M., Laboratory of Applied Biomechanics, State University of Londrina, Londrina, Brazil; Moreira G.D., Laboratory of Applied Biomechanics, State University of Londrina, Londrina, Brazil; Nakamura F.Y., Physical Education Department, State University of Londrina, Londrina, Brazil; Cunha S.A., Laboratory of Instrumentation for Biomechanics, University of Campinas, Campinas, Brazil; Moura F.A., Laboratory of Applied Biomechanics, State University of Londrina, Londrina, Brazil","The purpose of this study was to measure and characterise the distances covered by Brazilian professional futsal players. The trajectories of 93 players during five matches were obtained using an automatic tracking method. The distances covered were analysed for different game conditions: over the entire game and during the times when the ball was out of play and in play separately. When the entire game was considered, the results showed that there was a reduction in the total distance covered per minute from the first [median ± IQR (interquartile range): 97.9 ± 16.2 m/min] to the second half (median = 90.3 m/min; IQR = 12.0), and when only the in-play time was considered (first half: 136.6 ± 17.2 m/min; second half: 129.2 ± 16.7 m/min). The percentage of distance covered in the standing and walking velocity range was higher in the second half than in the first when considering the entire game (30.8% and 28.0%, respectively) and during the in-play time (19.3% and 16.2%, respectively). In conclusion, this study verified that futsal players reduced the physical performance during the second half. © 2014 Taylor & Francis.","activity profile; automatic tracking; in-play time; Kinematics; out-of-play time","Adult; Athletic Performance; Biomechanical Phenomena; Brazil; Cross-Sectional Studies; Humans; Running; Soccer; Time and Motion Studies; Walking; Young Adult; adult; athletic performance; biomechanics; Brazil; cross-sectional study; human; physiology; running; soccer; task performance; walking; young adult","Alvarez J.C., D'Ottavio S., Vera J.G., Castagna C., Aerobic fitness in futsal players of different competitive level, Journal of Strength and Conditioning Research, 23, pp. 2163-2166, (2009); Barbero-Alvarez J.C., Barbero-Alvarez V., Effects of pre-season training on aerobic power of futsal players during field progressive tests (continuous and intermitente), (2003); Barbero-Alvarez J.C., Soto V.M., Barbero-Alvarez V., Granda-Vera J., Match analysis and heart rate of futsal players during competition, Journal of Sports Sciences, 26, pp. 63-73, (2008); Barros R.M.L., Misuta M.S., Menezes R.P., Figueroa P.J., Moura F.A., Cunha S.A., Leite N.J., Analysis of the distances covered by first division Brazilian soccer players obtained with an automatic tracking method, Journal of Sports Science and Medicine, 6, pp. 233-242, (2007); Carling C., Bloomfield J., Nelsen L., Reilly T., The role of motion analysis in elite soccer: Contemporary performance measurement techniques and work rate data, Sports Medicine, 38, pp. 839-862, (2008); Castagna C., D'Ottavio S., Granda Vera J., Barbero Alvarez J.C., Match demands of professional futsal: A case study, Journal of Science and Medicine in Sport, 12, pp. 490-494, (2009); Dellal A., Chamari K., Wong D.P., Ahmaidi S., Keller D., Barros R., Carling C., Comparison of physical and technical performance in European soccer match-play: FA Premier League and La Liga, European Journal of Sport Science, 11, pp. 51-59, (2011); Dogramaci S.N., Watsford M.L., Murphy A.J., Time-motion analysis of international and national level futsal, Journal of Strength and Conditioning Research, 25, pp. 646-651, (2011); Duarte R., Araujo D., Correia V., Davids K., Marques P., Richardson M.J., Competing together: Assessing the dynamics of team-team and player-team synchrony in professional association football, Human Movement Science, 32, pp. 555-566, (2013); Fernandez-Fernandez J., Sanz-Rivas D., Fernandez-Garcia B., Mendez-Villanueva A., Match activity and physiological load during a clay-court tennis tournament in elite female players, Journal of Sports Sciences, 26, pp. 1589-1595, (2008); Figueroa P.J., Leite N.J., Barros R.M.L., Background recovering in outdoor image sequences: An example of soccer players segmentation, Image and Vision Computing, 24, pp. 363-374, (2006); Figueroa P.J., Leite N.J., Barros R.M.L., Tracking soccer players aiming their kinematical motion analysis, Computer Vision and Image Understanding, 101, pp. 122-135, (2006); Hartwig T.B., Naughton G., Searl J., Motion analyses of adolescent rugby union players: A comparison of training and game demands, Journal of Strength and Conditioning Research, 25, pp. 966-972, (2011); Liu J., Tong X., Li W., Wang T., Zhang Y., Wang H., Automatic player detection, labeling and tracking in broadcast soccer video, Pattern Recognition Letters, 30, pp. 103-113, (2009); Makaje N., Ruangthai R., Arkarapanthu A., Yoopat P., Physiological demands and activity profiles during futsal match play according to competitive level, Journal of Sports Medicine and Physical Fitness, 52, pp. 366-374, (2012); Milanez V.F., Pedro R.E., Moreira A., Boullosa D.A., Salle-Neto F., Nakamura F.Y., The role of aerobic fitness on session rating of perceived exertion in futsal players, International Journal of Sports Physiology and Performance, 6, pp. 358-366, (2011); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, Journal of Sports Sciences, 21, pp. 519-528, (2003); Moura F.A., Martins L.E.B., Anido R.O., Barros R.M.L., Cunha S.A., Quantitative analysis of Brazilian football players' organisation on the pitch, Sports Biomechanics, 11, pp. 85-96, (2012); Moura F.A., Martins L.E., Anido R.O., Ruffino P.R., Barros R.M., Cunha S.A., A spectral analysis of team dynamics and tactics in Brazilian football, Journal of Sports Sciences, 31, pp. 1568-1577, (2013); Oliveira R.S., Leicht A.S., Bishop D., Barbero-Alvarez J.C., Nakamura F.Y., Seasonal changes in physical performance and heart rate variability in high level futsal players, International Journal of Sports Medicine, 34, pp. 424-430, (2013); Pedro R.E., Milanez V.F., Boullosa D.A., Nakamura F.Y., Running speeds at ventilatory threshold and maximal oxygen consumption discriminate futsal competitive level, Journal of Strength and Conditioning Research, 27, pp. 514-518, (2013); Povoas S.C., Seabra A.F., Ascensao A.A., Magalhaes J., Soares J.M., Rebelo A.N., Physical and physiological demands of elite team handball, Journal of Strength and Conditioning Research, 26, pp. 3365-3375, (2012); Sarro K.J., Misuta M.S., Burkett B., Malone L.A., Barros R.M., Tracking of wheelchair rugby players in the 2008 Demolition Derby final, Journal of Sports Sciences, pp. 1-8, (2010); Soares-Caldeira L.F., Alves de Souza E., Hugo de Freitas V., Franzoi de Moraes S.M., Leicht A.S., Nakamura F.Y., Effects of additional repeated sprint training during pre-season on performance, heart rate variability and stress symptoms in futsal players: A randomized controlled trial, Journal of Strength and Conditioning Research, (2014)","","","Routledge","14763141","","","25224298","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-84908053185" "Hewett T.E.; Lynch T.R.; Myer G.D.; Ford K.R.; Gwin R.C.; Heidt Jr. R.S.","Hewett, T.E. (7005201943); Lynch, T.R. (36019392700); Myer, G.D. (6701852696); Ford, K.R. (7102539333); Gwin, R.C. (15061429600); Heidt Jr., R.S. (6701562485)","7005201943; 36019392700; 6701852696; 7102539333; 15061429600; 6701562485","Multiple risk factors related to familial predisposition to anterior cruciate ligament injury: Fraternal twin sisters with anterior cruciate ligament ruptures","2010","British Journal of Sports Medicine","44","12","","848","855","7","53","10.1136/bjsm.2008.055798","https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957190971&doi=10.1136%2fbjsm.2008.055798&partnerID=40&md5=546284fef07352f39da954535731a850","Cincinnati Children's Hospital Medical Center and Research Foundation, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States; University of Cincinnati, College of Allied Health Sciences, Rehabilitation Sciences, Cincinnati, OH, United States; University of Cincinnati, Department of Pediatrics and Orthopaedic Surgery, College of Medicine, Cincinnati, OH, United States; Wellington Orthopaedic and Sports Medicine, Cincinnati, OH, United States; Rocky Mountain University of Health Professions, Provo, UT, United States","Hewett T.E., Cincinnati Children's Hospital Medical Center and Research Foundation, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, University of Cincinnati, College of Allied Health Sciences, Rehabilitation Sciences, Cincinnati, OH, United States, University of Cincinnati, Department of Pediatrics and Orthopaedic Surgery, College of Medicine, Cincinnati, OH, United States; Lynch T.R., Wellington Orthopaedic and Sports Medicine, Cincinnati, OH, United States; Myer G.D., Cincinnati Children's Hospital Medical Center and Research Foundation, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Rocky Mountain University of Health Professions, Provo, UT, United States; Ford K.R., Cincinnati Children's Hospital Medical Center and Research Foundation, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, University of Cincinnati, Department of Pediatrics and Orthopaedic Surgery, College of Medicine, Cincinnati, OH, United States; Gwin R.C., Wellington Orthopaedic and Sports Medicine, Cincinnati, OH, United States; Heidt Jr. R.S., Wellington Orthopaedic and Sports Medicine, Cincinnati, OH, United States","Objective: A multifactorial combination of predictors may increase anterior cruciate ligament (ACL) injury risk in athletes. The objective of this twin study was to examine these risk factors to identify commonalities in risk factors that predisposed female fraternal twins to ACL injury. Methods: Female twins in high-risk sports were prospectively measured prior to an injury for neuromuscular control using three-dimensional motion analysis during landing, hamstrings and quadriceps muscular strength on a dynamometer and joint laxity using a modified Beighton-Horan index and a Compu-KT arthrometer. Intraoperative measures of femoral intercondylar notch width were recorded during ACL reconstruction. Results: Abduction angles were increased at one knee in both of the twin sister athletes relative to uninjured controls at initial contact and at maximum displacement during landing. The twin female athletes that went on to ACL injury also demonstrated decreased peak knee flexion motion at both knees than uninjured females during landing. The twin athletes also had increased joint laxity and decreased hamstrings to quadriceps (H/Q) torque ratios compared to controls. Femoral intercondylar notch widths were also below the control mean in the twin siblings. Conclusions: Prescreened mature female twins that subsequently experienced ACL injury demonstrated multiple potential risk factors including: increased knee abduction angles, decreased knee flexion angles, increased general joint laxity, decreased H/Q ratios and femoral intercondylar notch width.","","Adolescent; Anterior Cruciate Ligament; Basketball; Biomechanics; Female; Genetic Predisposition to Disease; Humans; Joint Instability; Knee Joint; Locomotion; Muscle Strength; Muscle, Skeletal; Risk Factors; Rupture; Soccer; Task Performance and Analysis; Twins; Twins, Dizygotic; adolescent; anterior cruciate ligament; article; basketball; biomechanics; case report; dizygotic twins; female; genetic predisposition; genetics; human; injury; joint instability; knee; locomotion; muscle strength; pathophysiology; physiology; risk factor; rupture; skeletal muscle; sport; task performance; twins","Anderson A.F., Dome D.C., Gautam S., Et al., Correlation of anthropometric measurements, strength, anterior cruciate ligament size, and intercondylar notch characteristics to sex differences in anterior cruciate ligament tear rates, Am. J. Sports Med., 29, pp. 58-66, (2001); Anderson A.F., Lipscomb A.B., Liudahl K.J., Et al., Analysis of the intercondylar notch by computed tomography, Am. J. Sports Med., 15, pp. 547-52, (1987); Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. NCAA data and review of literature, Am. J. Sports Med., 23, pp. 694-701, (1995); Charlton W.P., John T.A.S., Ciccotti M.G., Et al., Differences in femoral notch anatomy between men and women: A magnetic resonance imaging study, Am. J. Sports Med., 30, pp. 329-33, (2002); Flynn R.K., Pedersen C.L., Birmingham T.B., Et al., The familial predisposition toward tearing the anterior cruciate ligament: A case control study, Am. J. Sports Med., 33, pp. 23-8, (2005); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med. Sci. 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Sports Med., 35, pp. 1756-69, (2007); Myer G.D., Ford K.R., Barber-Foss K., Et al., The relationship of hamstrings and quadriceps strength to anterior cruciate ligament injury in female athletes, Clin. J. Sport Med., 19, pp. 3-8, (2009); Myer G.D., Ford K.R., Brent J.L., Et al., The effects of plyometric versus dynamic balance training on landing force and center of pressure stabilization in female athletes, Br. J. Sports Med., 39, (2005); Myer G.D., Ford K.R., Brent J.L., Et al., Differential neuromuscular training effects on ACL injury risk factors in ""high-risk"" versus ""low-risk"" athletes, BMC Musculoskelet Disord., 8, pp. 1-7, (2007); Myer G.D., Ford K.R., Divine J.G., Et al., Specialized dynamic neuromuscular training can be utilized to induce neuromuscular spurt in female athletes, Med. Sci. Sports Exerc., 36, pp. 343-4, (2004); Myer G.D., Ford K.R., McLean S.G., Et al., The effects of plyometric versus dynamic stabilization and balance training on lower extremity biomechanics, Am. J. Sports Med., 34, pp. 490-8, (2006); Myer G.D., Ford K.R., Palumbo J.P., Et al., Neuromuscular training improves performance and lower-extremity biomechanics in female athletes, J. Strength Cond Res., 19, pp. 51-60, (2005); Myer G.D., Ford K.R., Paterno M.V., Et al., The effects of generalized joint laxity on risk of anterior cruciate ligament injury in young female athletes, Am. J. Sports Med., 36, pp. 1073-80, (2008); Olsen O.E., Myklebust G., Engebretsen L., Et al., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am. J. Sports Med., 32, pp. 1002-12, (2004); Pasque C.B., Hewett T.E., A prospective study of high school wrestling injuries, Am. J. Sports Med., 28, pp. 509-15, (2000); Ramesh R., Arx O.V., Azzopardi T., Et al., The risk of anterior cruciate ligament rupture with generalised joint laxity, J. Bone Joint Surg. Br., 87, pp. 800-3, (2005); Reinschmidt C., Van Den Bogert A.J., Nigg B.M., Et al., Effect of skin movement on the analysis of skeletal knee joint motion during running, J. Biomech, 30, pp. 729-32, (1997); Shelbourne K., Davis T., Klootwyk T., The relationship between intercondylar notch width of the femur and the incidence of anterior cruciate ligament tears, Am. J. Sport Med., 26, pp. 402-8, (1998); Shelbourne K.D., Kerr B., The relationship of femoral intercondylar notch width to height, weight, and sex in patients with intact anterior cruciate ligaments, Am. J. Knee Surg., 14, pp. 92-6, (2001); Uhorchak J.M., Scoville C.R., Williams G.N., Et al., Risk factors associated with noncontact injury of the anterior cruciate ligament: A prospective four-year evaluation of 859 West Point cadets, Am. J. Sports Med., 31, pp. 831-42, (2003)","T. E. Hewett; Cincinnati Children's Hospital, MLC 10001, Cincinnati, OH 45229, 3333 Burnet Avenue, United States; email: tim.hewett@cchmc.org","","","14730480","","BJSMD","19158132","English","Br. J. Sports Med.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-77957190971" "Manson S.A.; Brughelli M.; Harris N.K.","Manson, Sarah A. (56109246400); Brughelli, Matt (17433572900); Harris, Nigel K. (15076557800)","56109246400; 17433572900; 15076557800","Physiological characteristics of international female soccer players","2014","Journal of Strength and Conditioning Research","28","2","","308","318","10","66","10.1519/JSC.0b013e31829b56b1","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84897073581&doi=10.1519%2fJSC.0b013e31829b56b1&partnerID=40&md5=808e494bcffb15aaadba9f71fa008f63","Sports Performance Research Institute New Zealand, School of Sport and Recreation, Auckland University of Technology, Auckland, New Zealand","Manson S.A., Sports Performance Research Institute New Zealand, School of Sport and Recreation, Auckland University of Technology, Auckland, New Zealand; Brughelli M., Sports Performance Research Institute New Zealand, School of Sport and Recreation, Auckland University of Technology, Auckland, New Zealand; Harris N.K., Sports Performance Research Institute New Zealand, School of Sport and Recreation, Auckland University of Technology, Auckland, New Zealand","Manson, SA, Brughelli, M, and Harris, NK. Physiological characteristics of international female soccer players. J Strength Cond Res 28(2): 308-318, 2014-The purpose of this study was to investigate the physiological characteristics of Fédé ration Internationale de Football Association (FIFA) eligible international female soccer players aged 14-36 years and to determine if measures were significantly different for players selected (i.e., starters) to the starting line up for an FIFA tournament as compared with those not selected (i.e., nonstarters). Fifty-one (N = 18 Under 17; N = 18 Under 20; N = 15 Senior) international female soccer players participated in this study. The subjects underwent measurements of anthropometry (height and body mass), lower body strength (isokinetic testing), sprint kinetics and kinematics (nonmotorized treadmill), leg power (unilateral jumping), and maximal aerobic velocity (30:15 intermittent fitness test) during the final preparatory stage for an FIFA event. Outcomes of the age group data indicate that differences in physiological capacities are evident for the Under 17 players as compared with those for the Under 20 and Senior capped international players, suggesting a plateau in the acquisition of physical qualities as players mature. Starters tended to be faster (effect size [ES] = 0.55-1.0, p > 0.05) and have a higher maximal aerobic velocity (ES = 0.78-2.45, p > 0.05), along with greater eccentric leg strength (ES = 0.33-1.67, p > 0.05). Significant differences were detected between starters and nonstarters for isokinetic leg strength (ES = 0.54-1.24, p > 0.05) and maximal aerobic velocity (ES = 0.87, p > 0.05) for Under 17 players, where maximal aerobic velocity was the primary difference between starters and nonstarters (ES = 0.83-2.45, p > 0.05) for the Under 20 and Senior players. Coaches should emphasize the development of speed, maximal aerobic velocity, and leg strength in developing female soccer players. © 2014 National Strength and Conditioning Association.","Football; Physical profile; Speed and strength development; Standard of play","Adolescent; Adult; Age Factors; Athletic Performance; Biomechanical Phenomena; Body Height; Body Weight; Female; Hip Joint; Humans; Knee Joint; Muscle Strength; Muscle, Skeletal; Oxygen Consumption; Physical Fitness; Running; Soccer; Young Adult; adolescent; adult; age; article; athletic performance; biomechanics; body height; body weight; female; fitness; hip; human; knee; muscle strength; oxygen consumption; physiology; running; skeletal muscle; soccer; young adult","Andersson H.A., Randers M.B., Heiner-Moller A., Krustrup P., Mohr M., Elite female soccer players perform more high-intensity running when playing in international games compared with domestic league games, J Strength Cond Res, 24, pp. 912-919, (2010); Bayli I., Way R., The role of monitoring growth in the long term athlete development, Can Sport Life, pp. 8-10, (2005); Barber-Westin S.D., Noyes F.R., Galloway M., Jump-land characteristics and muscle strength development in young athletes: A gender comparison of 1140 athletes 9 to 17 years of age, Am J Sports Med, 34, pp. 375-384, (2006); Buchheit M., The 30-15 intermittent fitness test: Accuracy for individualizing interval training of young intermittent sport players, J Strength Cond Res, 22, pp. 365-374, (2008); Buchheit M., The 30-15 intermittent fitness test: 10 Year review, Myorobie J, 1, 9, (2010); Buchheit M., Al Haddad H., Millet G.P., Lepretre P.M., Newton M., Ahmaidi S., Cardiorespiratory and cardiac autonomic responses to 30-15 intermittent fitness test in team sport players, J Strength Cond Res, 23, pp. 93-100, (2009); Buchheit M., Lepretre P.M., Behaegel A.L., Millet G.P., Cuvelier G., Ahmaidi S., Cardiorespiratory responses during running and sport-specific exercises in handball players, J Sci Med Sport, 12, pp. 399-405, (2009); Buchheit M., Mendez-Villanueva A., Simpson B.M., Bourdon P.C., Match running performance and fitness in youth soccer, Int J Sports Med, 31, pp. 818-825, (2010); 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Women?s Football Development, (2012); FIFA U-17 Women?s World Cup, Statistical Kit-Post Event Edition, (2013); Forbes H., Sutcliffe S., Lovell A., McNaughton L.R., Siegler J.C., Isokinetic thigh muscle ratios in youth football: Effect of age and dominance, Int J Sports Med, 30, pp. 602-606, (2009); Gabbett T.J., Mulvey M.J., Time-motion analysis of small-sided training games and competition in elite women soccer players, J Strength Cond Res, 22, pp. 543-552, (2008); Gabbett T.J., Wiig H., Spencer M., Repeated high-intensity running and sprinting in elite women?s soccer competition, Int J Sports Physiol Perform, 8, pp. 130-138, (2013); Grissis I., Papadopoulos C., Kalapotharakos V.I., Sotiropoulos G.K., Komsis G., Strength and speed characteristics of elite, subelite, and recreational young soccer players, Res Sports Med Int J, 14, (2006); Hayter A.J., The maximum familywise error rate of Fisher?s least significant difference test, J Am Stat Assoc, 81, pp. 1000-1004, (1986); Helgerud J., Engen L.C., Wisloff U., Hoff J., Aerobic endurance training improves soccer performance, Med Sci Sports Exerc, 33, pp. 1925-1931, (2001); Herdman J., Priestman B., Koustaal J., Eaddy S., Readings T., Meylan C., Rumpf M., Ohara P., McFarland A., De Bono M., Junior Framework, (2011); Hoare D.G., Warr C.R., Talent identification and women?s soccer: An Australian experience, J Sports Sci, 18, pp. 751-758, (2000); Hoff J., Wisloff U., Engen L.C., Kemi O.J., Helgerud J., Soccer specific aerobic endurance training, Br J Sports Med, 36, pp. 218-221, (2002); Hopkins W.G., Marshall S.W., Batterham A.M., Hanin J., Progressive statistics for studies in sports medicine and exercise science, Med Sci Sports Exerc, 41, pp. 3-13, (2009); Korff T., Horne S.L., Cullen S.J., Blazevich A.J., Development of lower limb stiffness and its contribution to maximum vertical jumping power during adolescence, J Exp Biol, 212, pp. 3737-3742, (2009); Krustrup P., Mohr M., Ellingsgaard H., Bangsbo J., Physical demands during an elite female soccer game: Importance of training status, Med Sci Sports Exerc, 37, pp. 1242-1248, (2005); Le Gall F., Carling C., Williams A.M., Reilly J.T., Anthropometric and fitness characteristics of international, professional and amateur male graduate soccer players from an elite youth academy, J Sci Med Sport, 13, pp. 90-95, (2010); Loko J., Aule R., Sikkut T., Ereline J., Viru A., Motor performance status in 10 to 17-year-old Estonian girls, Scand J Med Sci Sports, 10, pp. 109-113, (2000); Loko J., Aule R., Sikkut T., Ereline J., Viru A., Age differences in growth and physical abilities in trained and untrained girls 10-17 years of age, Am J Hum Biol, 15, pp. 72-77, (2003); Malina R.M., Eisenmann J.C., Cumming S.P., Ribeiro B., Aroso J., Maturity-associated variation in the growth and functional capacities of youth football (soccer) players 13-15 years, Eur J Appl Physiol, 91, pp. 555-562, (2004); Meylan C., McMaster T., Cronin J., Mohammad N.I., Rogers C., Deklerk M., Single-leg lateral, horizontal, and vertical jump assessment: Reliability, interrelationships, and ability to predict sprint and change-of-direction performance, J Strength Cond Res, 23, pp. 1140-1147, (2009); Meylan C.M., Cronin J.B., Oliver J., Hughes M., Talent identification in soccer: The role of maturity status on physical, physiological and technical characteristics, Int J Sports Sci Coaching, 5, 21, (2010); Mohr M., Krustrup P., Andersson H., Kirkendal D., Bangsbo J., Match activities of elite women soccer players at different performance levels, J Strength Cond Res, 22, pp. 341-349, (2008); Mohr M., Krustrup P., Bangsbo J., Match performance of highstandard soccer players with special reference to development of fatigue, J Sports Sci, 21, pp. 519-528, (2003); Mujika I., Santisteban J., Impellizzeri F.M., Castagna C., Fitness determinants of success in men?s and women?s football, J Sports Sci, 27, pp. 107-114, (2009); Reilly T., Bangsbo J., Franks A., Anthropometric and physiological predispositions for elite soccer, J Sports Sci, 18, pp. 669-683, (2000); Reilly T., Williams A.M., Nevill A., Franks A., A multidisciplinary approach to talent identification in soccer, J Sports Sci, 18, pp. 695-702, (2000); Rochcongar P., Morvan R., Jan J., Dassonville J., Beillot J., Isokinetic investigation of knee extensors and knee flexors in young French soccer players, Int J Sports Med, 9, pp. 448-450, (1988); Rowland T.W., Children?s Exercise Physiology, (2005); Vaeyens R., Malina R.M., Janssens M., Van Renterghem B., Bourgois J., Vrijens J., Philippaerts R.M., A multidisciplinary selection model for youth soccer: The Ghent Youth Soccer Project, Br J Sports Med, 40, pp. 928-934; Vescovi J.D., Brown T.D., Murray T.M., Positional characteristics of physical performance in Division i college female soccer players, J Sports Med Phys Fitness, 46, pp. 221-226, (2006); Vescovi J.D., Rupf R., Brown T.D., Marques M.C., Physical performance characteristics of high-level female soccer players 12-21 years of age, Scand J Med Sci Sports, 21, pp. 670-678, (2011); Williams A.M., Reilly T., Talent identification and development in soccer, J Sports Sci, 18, pp. 657-667, (2000)","S.A. Manson; Sports Performance Research Institute New Zealand, School of Sport and Recreation, Auckland University of Technology, Auckland, New Zealand; email: sarah.manson@aut.ac.nz","","NSCA National Strength and Conditioning Association","10648011","","","24476742","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-84897073581" "Funk J.R.; Cormier J.M.; Bain C.E.; Guzman H.; Bonugli E.; Manoogian S.J.","Funk, James R. (7102066034); Cormier, Joseph M. (14017719900); Bain, Charles E. (24167809600); Guzman, Herb (7006458372); Bonugli, Enrique (24167876300); Manoogian, Sarah J. (6505714174)","7102066034; 14017719900; 24167809600; 7006458372; 24167876300; 6505714174","Head and Neck loading in everyday and vigorous activities","2011","Annals of Biomedical Engineering","39","2","","766","776","10","60","10.1007/s10439-010-0183-3","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79951554182&doi=10.1007%2fs10439-010-0183-3&partnerID=40&md5=d312de547171f4bf30c3aa9fa34162cf","Biodynamic Research Corporation, San Antonio, TX 78249, 5711 University Heights Blvd., United States","Funk J.R., Biodynamic Research Corporation, San Antonio, TX 78249, 5711 University Heights Blvd., United States; Cormier J.M., Biodynamic Research Corporation, San Antonio, TX 78249, 5711 University Heights Blvd., United States; Bain C.E., Biodynamic Research Corporation, San Antonio, TX 78249, 5711 University Heights Blvd., United States; Guzman H., Biodynamic Research Corporation, San Antonio, TX 78249, 5711 University Heights Blvd., United States; Bonugli E., Biodynamic Research Corporation, San Antonio, TX 78249, 5711 University Heights Blvd., United States; Manoogian S.J., Biodynamic Research Corporation, San Antonio, TX 78249, 5711 University Heights Blvd., United States","The purpose of this study was to document head and neck loading in a group of ordinary people engaged in non-injurious everyday and more vigorous physical activities. Twenty (20) volunteers that were representative of the general population were subjected to seven test scenarios: a soccer ball impact to the forehead, a self-imposed hand strike to the forehead, vigorous head shaking, plopping down in a chair, jumping off a step, a seated drop onto the buttocks, and a vertical drop while seated supine in a chair. Some scenarios involved prescribed and well-controlled stimuli, while others allowed the volunteers to perform common activities at a self-selected level of intensity. Head accelerations up to 31 g and 2888 rad/s2 and neck loads up to 268 N in posterior shear, 526 N in compression, and 36 Nm in extension were recorded. Most head and neck injury criteria predicted a low risk of injury in all activities. However, rotational head accelerations and Neck Injury Criterion (NIC) values were much higher than some proposed tolerance limits in a large number of tests, all of which were non-injurious. The data from this study help us to establish an envelope of head and neck loading that is commonly encountered and presents a minimal risk of injury. © 2010 Biomedical Engineering Society.","Biomechanics; Brain; Concussion; Head; Injury criteria; Neck; Whiplash","Acceleration; Activities of Daily Living; Adult; Computer Simulation; Female; Head; Humans; Male; Middle Aged; Models, Biological; Neck; Physical Exertion; Stress, Mechanical; Weight-Bearing; Biomechanics; Drops; Fits and tolerances; Concussion; Head; Injury criteria; Neck; Whiplash; acceleration; adult; article; biological model; computer simulation; daily life activity; exercise; female; head; human; male; mechanical stress; middle aged; neck; physiology; weight bearing; Loading","Allen M.E., Weir-Jones I., Motiuk D.R., Flewin K.R., Goring R.D., Kobetitch R., Broadhurst A., King A.I., Acceleration perturbations of daily living: A comparison to 'whiplash, Spine, 19, 11, pp. 1285-1290, (1994); Beier G., Schuller E., Schuck M., Ewing C.L., Becker E.D., Thomas D.J., Proc. International IRCOBI Conf., pp. 218-228, (1980); Bostrom O., A new neck injury criterion candidate-based on injury findings in the cervical spinal ganglia after experimental neck extension trauma, Proc. International IRCOBI Conf., pp. 123-136, (1996); Bussone W.R., Moore T.L.A., Richards D., Bove R.T., Scher I., Prange. M.T., Measurements of non-injurious head accelerations of a pediatric population, Society of Automotive Engineers, (2009); Carragee E., Alamin T., Cheng I., Franklin T., Hurwitz E., Does minor trauma cause serious low back illness?, Spine, 31, 25, pp. 2942-2949, (2006); Carver A., XIV: Pain, ACP Medicine, (2009); Castro W.H.M., Meyer S.J., Becke M.E.R., Nentwig C.G., Hein M.F., Ercan B.I., Thomann S., Wessels U., Du Chesne A.E., No stress - No whiplash? Prevalence of ""whiplash"" symptoms following exposure to a placebo rear-end collision, International Journal of Legal Medicine, 114, 6, pp. 316-322, (2001); Clauser C.E., McConville J.T., Young. J.W., Weight, volume, and center of mass of segments of the human body, Wright-patterson AFB, Air Force Systems Command, pp. 1-100, (1969); Duma S.M., Manoogian S.J., Bussone W.R., Brolinson P.G., Goforth M.W., Donnenwerth J.J., Greenwald R.M., Chu J.J., Crisco J.J., Analysis of real-time head accelerations in collegiate football players, Clinical Journal of Sport Medicine, 15, 1, pp. 3-8, (2005); Frechede B., McIntosh A.S., Numerical reconstructions of real-life concussive football impacts, Med. Sci. Sports Exer., 41, 2, pp. 390-398, (2009); Funk J.R., Cormier J.M., Bain C.E., Guzman H., Bonugli. E., An evaluation of various neck injury criteria in vigorous activities, Proc. International IRCOBI Conf., pp. 233-248, (2007); Funk J.R., Cormier J.M., Bain C.E., Guzman H., Bonugli. E., Validation and application of a methodology to calculate head accelerations and neck loading in soccer ball impacts, Society of Automotive Engineers, (2009); Funk J.R., Duma S.M., Manoogian S.J., Rowson S., Biomechanical risk estimates for mild traumatic brain injury, Proc. Assoc. Adv. Automot. Med., 51, pp. 343-361, (2007); Kullgren A., Eriksson L., Bostrom O., Krafft. M., Validation of neck injury criteria using reconstructed real-life rear-end crashes with recorded crash pulses, Proc. 18th Enhanced Safety of Vehicles Conf., (2003); Manoogian S.J., Funk J.R., Cormier J.M., Bain C.E., Guzman H., Bonugli. E., Evaluation of Thoracic and Lumbar Accelerations of Volunteers in Vertical and Horizontal Loading Scenarios, Society of Automotive Engineers, (2010); Mertz H.J., Prasad. P., Improved neck injury risk curves for tension and extension moment measurements of crash dummies, Proc. 44th Stapp Car Crash Conf., (2000); National Highway Traffic Safety Administration, (2004); Naunheim R.S., Standeven J., Richter C., Lewis L.M., Comparison of impact data in hockey, and soccer, Journal of Trauma - Injury, Infection and Critical Care, 48, 5, pp. 938-941, (2000); Ng T.P., Bussone W.R., Duma S.M., The effect of gender and body size on linear accelerations of the head observed during daily activities, Biomed. Sci. Instrum., 42, pp. 25-30, (2006); Ommaya A.K., Hirsch A.E., Tolerances for cerebral concussion from head impact and whiplash in primates, J. Biomech., 4, pp. 13-21, (1971); Ono K., Kaneoka K., Wittek A., Kajzer. J., Cervical injury mechanism based on the analysis of human cervical vertebral motion and head-neck-torso kinematics during low speed rear impacts, Proc. 41st Stapp Car Crash Conf., pp. 339-356, (1997); Pincemaille Y., Trosseille X., MacK P., Tarriere C., Breton F., Renault. B., Some new data related to human tolerance obtained from volunteer boxers, Proc. 33rd Stapp Car Crash Conf., pp. 177-190, (1989); Rowson S., Brolinson G., Goforth M., Dietter D., Duma. S., Linear and angular head acceleration measurements in collegiate football, J. Biomech. Eng., 131, pp. 0610161-0610167, (2009); Schmitt K.-U., Muser M.H., Niederer. P., A new neck injury criterion candidate for rear-end collisions taking into account shear forces and bending moments, Proc. 17th Enhanced Safety of Vehicles Conf., (2001); Schneider L.W., Robbins D.H., Pflug M.A., Snyder. R.G., Anthropometry of Motor Vehicle Occupants, (1983); Van Den Kroonenberg A., Philippens M., Cappon H., Wismans J., Hell W., Langwieder. K., Human head-neck response during low-speed rear end impacts, Proc. 42nd Stapp Car Crash Conf., pp. 207-221, (1998); Vorst M.V., Ono K., Chan P., Stuhmiller J., Correlates to traumatic brain injury in nonhuman primates, Journal of Trauma - Injury, Infection and Critical Care, 62, 1, pp. 199-206, (2007); Vijayakumar V., Scher I., Gloeckner D.C., Pierce J., Bove R., Young D., Cargill. R., Head kinematics and upper neck loading during simulated low-speed rear-end collisions: A comparison with vigorous activities of daily living, Society of Automotive Engineers., pp. 49-60, (2006)","J. R. Funk; Biodynamic Research Corporation, San Antonio, TX 78249, 5711 University Heights Blvd., United States; email: jfunk@brconline.com","","","15739686","","ABMEC","20960061","English","Ann Biomed Eng","Article","Final","","Scopus","2-s2.0-79951554182" "Distefano L.J.; Blackburn J.T.; Marshall S.W.; Guskiewicz K.M.; Garrett W.E.; Padua D.A.","Distefano, Lindsay J. (24480755900); Blackburn, J. Troy (7102292077); Marshall, Stephen W. (7401823263); Guskiewicz, Kevin M. (7004697944); Garrett, William E. (7102162248); Padua, Darin A. (7005626883)","24480755900; 7102292077; 7401823263; 7004697944; 7102162248; 7005626883","Effects of an age-specific anterior cruciate ligament injury prevention program on lower extremity biomechanics in children","2011","American Journal of Sports Medicine","39","5","","949","957","8","49","10.1177/0363546510392015","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955701909&doi=10.1177%2f0363546510392015&partnerID=40&md5=c75c987201a418a76e20595f70bbc142","Department of Kinesiology, University of Connecticut, U-1110, 2095 Hillside Road, Storrs, CT 06269, United States; Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Department of Orthopedics, Duke University, Durham, NC, United States","Distefano L.J., Department of Kinesiology, University of Connecticut, U-1110, 2095 Hillside Road, Storrs, CT 06269, United States; Blackburn J.T., Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Marshall S.W., Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Guskiewicz K.M., Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Garrett W.E., Department of Orthopedics, Duke University, Durham, NC, United States; Padua D.A., Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States","Background: Implementing an anterior cruciate ligament injury prevention program to athletes before the age at which the greatest injury risk occurs (15-17 years) is important from a prevention standpoint. However, it is unknown whether standard programs can modify lower extremity biomechanics in pediatric populations or if specialized training is required. Hypothesis/Purpose: To compare the effects of traditional and age-specific pediatric anterior cruciate ligament injury prevention programs on lower extremity biomechanics during a cutting task in youth athletes. The authors hypothesized that the age-specific pediatric program would result in greater sagittal plane motion (ie, hip and knee flexion) and less motion in the transverse and frontal plane (ie, knee valgus, knee and hip rotation) as compared with the traditional program. Study Design: Randomized controlled trial; Level of evidence, 1. Methods: Sixty-five youth soccer athletes (38 boys, 27 girls) volunteered to participate. The mean age of participants was 10 ± 1 years. Teams (n, 7) were cluster randomized to a pediatric injury prevention program, a traditional injury prevention program, or a control group. The pediatric program was modified from the traditional program to include more feedback, progressions, and variety. Teams performed their programs as part of their normal warm-up routine. Three-dimensional lower extremity biomechanics were assessed during a sidestep cutting task before and after completion of the 9-week intervention period. Results: The pediatric program reduced the amount of knee external rotation at initial ground contact during the cutting task, F (2,62) = 3.79, P =.03 (change: pediatric, 7.73° ± 10.71°; control, -0.35° ± 7.76°), as compared with the control group after the intervention period. No other changes were observed. Conclusion: The injury prevention program designed for a pediatric population modified only knee rotation during the cutting task, whereas the traditional program did not result in any changes in cutting biomechanics. These findings suggest limited effectiveness of both programs for athletes younger than 12 years of age in terms of biomechanics during a cutting task. © 2011 The Author(s).","anticipated cutting task; biomechanics; injury prevention; youth athletes","Anterior Cruciate Ligament; Biomechanics; Child; Female; Humans; Knee Injuries; Knee Joint; Male; anterior cruciate ligament; article; biomechanics; child; clinical trial; comparative study; controlled clinical trial; controlled study; female; human; injury; knee; knee injury; male; physiology; randomized controlled trial","Arms S.W., Pope M.H., Johnson R.J., The biomechanics of anterior cruciate ligament rehabilitation and reconstruction, American Journal of Sports Medicine, 12, 1, pp. 8-18, (1984); Bell A.L., Pedersen D.R., Brand R.A., A comparison of the accuracy of several hip center location prediction methods, Journal of Biomechanics, 23, 6, pp. 617-621, (1990); Boden B.P., Dean C.S., Feagin Jr. J.A., Garrett Jr. W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Chappell J.D., Limpisvasti O., Effect of a neuromuscular training program on the kinetics and kinematics of jumping tasks, American Journal of Sports Medicine, 36, 6, pp. 1081-1086, (2008); Devita P., Skelly W.A., Effect of landing stiffness on joint kinetics and energetics in the lower extremity, Med Sci Sports Exerc, 24, 1, pp. 108-115, (1992); Distefano L.J., Padua D.A., Distefano M.J., Marshall S.W., Influence of age, sex, technique, and exercise program on movement patterns after an anterior cruciate ligament injury prevention program in youth soccer players, Am J Sports Med, 37, 3, pp. 495-505, (2009); Emanuel M., Jarus T., Bart O., Effect of focus of attention and age on motor acquisition, retention, and transfer: A randomized trial, Physical Therapy, 88, 2, pp. 251-260, (2008); Emery C.A., Injury prevention and future research, Med Sport Sci, 48, pp. 179-200, (2005); Faigenbaum A.D., Bellucci M., Bernieri A., Bakker B., Hoorens K., Acute effects of different warm-up protocols on fitness performance in children, Journal of Strength and Conditioning Research, 19, 2, pp. 376-381, (2005); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Medicine and Science in Sports and Exercise, 37, 1, pp. 124-129, (2005); Foster C., Monitoring training in athletes with reference to overtraining syndrome, Medicine and Science in Sports and Exercise, 30, 7, pp. 1164-1168, (1998); Fung D.T., Zhang L.-Q., Modeling of ACL impingement against the intercondylar notch, Clinical Biomechanics, 18, 10, pp. 933-941, (2003); Gabbard C.P., Lifelong Motor Development, (2008); Gallahue D.L., Developmental Physical Education for Today's Children, (1996); Gallahue D.L., Ozmun J.C., Understanding Motor Development: Infants, Children, Adolescents, Adults, (2006); Gianotti S.M., Marshall S.W., Hume P.A., Bunt L., Incidence of anterior cruciate ligament injury and other knee ligament injuries: A national population-based study, J Sci Med Sport, 12, 6, pp. 622-627, (2009); Grandstrand S.L., Pfeiffer R.P., Sabick M.B., DeBeliso M., Shea K.G., The effects of a commercially available warm-up program on landing mechanics in female youth soccer players, Journal of Strength and Conditioning Research, 20, 2, pp. 331-335, (2006); 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J. Distefano; Department of Kinesiology, University of Connecticut, U-1110, 2095 Hillside Road, Storrs, CT 06269, United States; email: lindsay.distefano@uconn.edu","","","15523365","","AJSMD","21285445","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-79955701909" "Roos H.","Roos, H. (7005230144)","7005230144","Are there long-term sequelae from soccer?","1998","Clinics in Sports Medicine","17","4","","819","831","12","66","10.1016/S0278-5919(05)70122-8","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0031717432&doi=10.1016%2fS0278-5919%2805%2970122-8&partnerID=40&md5=d3d6d2c68666f0bf8fed62a9862050c6","Department of Orthopedics, University Hospital, 221 85 Lund, Sweden","Roos H., Department of Orthopedics, University Hospital, 221 85 Lund, Sweden","A long-term soccer career seems to increase the risk for early development of osteoarthritis in the lower extremity. Soccer constitutes a risk for osteoarthritis in two different ways. First, by the increased risk for knee injuries in soccer, such as meniscus and anterior cruciate ligament injuries; and second, by the high loading on hip and knee joints that occurs in soccer. The risk for these undesirable effects of soccer are higher in top-level players.","","anterior cruciate ligament rupture; athlete; biomechanics; coxitis; high risk population; human; knee function; knee meniscus rupture; knee osteoarthritis; review; sport injury; weight bearing","Adalberth T., Roos H., Lauren M., Et al., Magnetic resonance imaging, scintigraphy, and arthroscopic evaluation in traumatic hemarthrosis of the knee, Am J Sports Med, 25, pp. 231-237, (1997); Allen P.R., Denham R.A., Swan A.V., Late degenerative changes after meniscectomy: Factors affecting the knee after operation, J Bone Joint Surg Br, 66, pp. 666-671, (1984); Andersson C., Odensten M., Good L., Et al., Surgical or non-surgical treatment of acute rupture of the anterior cruciate ligament: A randomized study with long-term follow-up, J Bone Joint Surg Am, 71-A, pp. 965-974, (1989); Andersson S., Nilsson B., Hessel T., Et al., Degenerative joint disease in ballet dancers, Clin Orthop, 238, pp. 233-236, (1989); 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Saunders","02785919","","CSMEE","9922905","English","Clin. Sports Med.","Article","Final","","Scopus","2-s2.0-0031717432" "Jones P.A.; Herrington L.C.; Graham-Smith P.","Jones, Paul A. (55308526600); Herrington, Lee C. (7004230643); Graham-Smith, Philip (23992390400)","55308526600; 7004230643; 23992390400","Technique determinants of knee joint loads during cutting in female soccer players","2015","Human Movement Science","42","","","203","211","8","60","10.1016/j.humov.2015.05.004","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931263066&doi=10.1016%2fj.humov.2015.05.004&partnerID=40&md5=2228b9a4224baea1fa3eacbda0279769","Sport Exercise and Physiotherapy, University of Salford, Allerton Building, Frederick Road Campus, Salford, Greater Manchester, M6 6PU, United Kingdom; Aspire Academy, PO Box 22287, Doha, Qatar","Jones P.A., Sport Exercise and Physiotherapy, University of Salford, Allerton Building, Frederick Road Campus, Salford, Greater Manchester, M6 6PU, United Kingdom; Herrington L.C., Sport Exercise and Physiotherapy, University of Salford, Allerton Building, Frederick Road Campus, Salford, Greater Manchester, M6 6PU, United Kingdom; Graham-Smith P., Sport Exercise and Physiotherapy, University of Salford, Allerton Building, Frederick Road Campus, Salford, Greater Manchester, M6 6PU, United Kingdom, Aspire Academy, PO Box 22287, Doha, Qatar","The aim of this study was to investigate the relationships between technique characteristics and knee abduction moments during 90° cuts. A cross sectional design involving 26 elite and sub-elite female soccer players (mean±SD; age: 21±3.2years, height: 1.68±0.07m, and mass: 59.1±6.8kg) was used to explore relationships between pre-determined technical factors on knee abduction moments during cutting. Three dimensional motion analyses of 90° cuts on the right leg were performed using 'Qualisys Pro Reflex' infrared cameras (240Hz). Ground reaction forces were collected from two AMTI force platforms (1200Hz) embedded into the running track to examine 2nd last and last footfalls. Pearson's correlation coefficients, co-efficients of determination and hierarchical multiple regression were used to explore relationships between a range of technique parameters and peak knee abduction moments. Significance was set at p<.05. Hierarchical multiple regression revealed that initial knee abduction angle, lateral leg plant distance and initial lateral trunk lean could explain 67% (62% adjusted) of the variation in peak knee abduction moments (F(1,22)=8.869, p=.007). These findings reveal potential modifiable technical factors to lower peak knee abduction moments during cutting. © 2015 Elsevier B.V.","Anterior cruciate ligament; Injury; Knee abduction moment","Adolescent; Anterior Cruciate Ligament; Biomechanical Phenomena; Cross-Sectional Studies; Female; Humans; Knee Joint; Motor Skills; Range of Motion, Articular; Soccer; Weight-Bearing; Young Adult; abduction; adult; Article; athlete; cross-sectional study; female; ground reaction force; human; joint mobility; knee; soccer; adolescent; anterior cruciate ligament; biomechanics; joint characteristics and functions; knee; motor performance; physiology; soccer; weight bearing; young adult","Angeloni C., Cappozzo A., Catani F., Leardini A., Quantification of relative displacement of skin- and plate- mounted markers with respect to bones, Journal of Biomechanics, 26, (1993); Bell A.L., Brand R.A., Pedersen D.R., Prediction of hip-joint center location from external landmarks, Human Movement Science, 8, pp. 3-16, (1989); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., Anticipatory effects on knee joint loading during running and cutting maneuvers, Medicine and Science in Sports and Exercise, 33, pp. 1176-1181, (2001); Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in FA premier league soccer, Journal of Sports Science and Medicine, 6, pp. 63-70, (2007); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Cappozzo A., Cappello A., Della Croce U., Pensalfini F., Surface marker cluster design for 3-D bone movement reconstruction, IEEE Transactions on Biomedical Engineering, 44, pp. 1165-1174, (1997); Dempsey A.R., Lloyd D.G., Elliot B.C., Steele J.R., Munro B.J., Changing sidestep cutting technique reduces knee valgus loading, American Journal of Sports Medicine, 37, pp. 2194-2200, (2009); Dempsey A.R., Lloyd D.G., Elliot B.C., Steele J.R., Munro B.J., Russo K.A., The effect of technique change on knee loads during sidestep cutting, Medicine and Science in Sports and Exercise, 39, pp. 1765-1773, (2007); Dempster W.T., Space requirements of the seated operator: Geometrical, kinematic, and mechanical aspects of the body with special reference to the limbs., (1955); Faude O., Junge A., Kindermann W., Dvorak J., Injuries in female soccer players. A prospective study in the German national league, American Journal of Sports Medicine, 33, pp. 1694-1700, (2005); Graham-Smith P., Atkinson L., Barlow R., Jones P., (2009); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three dimensional motions: Application to the knee, Journal of Biomechanical Engineering, 105, pp. 136-144, (1983); Jamison S.T., Pan X., Chaudhari A.M.W., Knee moments during run-to-cut maneuvers are associated with lateral trunk positioning, Journal of Biomechanics, 45, pp. 1881-1885, (2012); Kristianlunds E., Faul O., Bahr R., Myklebust G., Krosshaug T., Sidestep cutting techniques and knee abduction loading: implications for ACL prevention exercises, British Journal of Sports Medicine, 48, pp. 779-783, (2014); Manal K., McClay I., Stanhope S., Richards J., Galinat B., Comparison of surface mounted markers and attachment methods is estimating tibial rotations during walking: An in vivo study, Gait and Posture, 11, pp. 38-45, (2000); McLean S.G., Huang X., Su A., van den Bogert A.J., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clinical Biomechanics, 19, pp. 828-838, (2004); McLean S.G., Huang X., van den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clinical Biomechanics, 20, pp. 863-870, (2005); McLean S.G., Su A., van den Bogert A.J., Development and validation of a 3-D model to predict knee joint loading during dynamic movement, Journal of Biomechanical Engineering, 125, pp. 864-874, (2003); Nedergaard N.J., Kersting U., Lake M., Using accelerometry to quantify deceleration during a high-intensity soccer turning manoeuvre, Journal of Sports Sciences, 32, pp. 1897-1905, (2014); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball. A systematic video analysis, American Journal of Sports Medicine, 32, pp. 1002-1012, (2004); Shin C.S., Chaudhari A.M., Andriacchi T.P., The effect of isolated valgus moments on ACL strain during single-leg landing: A simulation study, Journal of Biomechanics, 42, pp. 280-285, (2009); Shin C.S., Chaudhari A.M., Andriacchi T.P., Valgus plus internal rotation moments increase anterior cruciate ligament strain more than either alone, Medicine and Science in Sports Exercise, 43, pp. 1484-1491, (2011); Sigward S.M., Powers C.M., Loading characteristics of females exhibiting excessive valgus moments during cutting, Clinical Biomechanics, 22, pp. 827-833, (2007); Vincent W.J., Statistics in Kinesiology, (1995); Winter D.A., Biomechanics and motor control of human movement, (2009); Yeadon M.R., Kato T., Kerwin D.G., Measuring running speed using photocells, Journal of Sports Sciences, 17, pp. 249-257, (1999)","","","Elsevier","01679457","","HMSCD","26057866","English","Hum. Mov. Sci.","Article","Final","","Scopus","2-s2.0-84931263066" "Stearns K.M.; Pollard C.D.","Stearns, Kristen M. (55503502800); Pollard, Christine D. (7006671942)","55503502800; 7006671942","Abnormal frontal plane knee mechanics during sidestep cutting in female soccer athletes after anterior cruciate ligament reconstruction and return to sport","2013","American Journal of Sports Medicine","41","4","","918","923","5","53","10.1177/0363546513476853","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84875851985&doi=10.1177%2f0363546513476853&partnerID=40&md5=9d8cee62f16cd290d6ececf240c8b760","Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States; Exercise and Sport Science, Oregon State University-Cascades, Bend, OR, United States","Stearns K.M., Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States; Pollard C.D., Exercise and Sport Science, Oregon State University-Cascades, Bend, OR, United States","Background: Athletes who have undergone anterior cruciate ligament reconstruction (ACLR) have a high risk of reinjury upon the return to sports participation. While the mechanisms behind this increased risk of reinjury are unknown, it has been suggested that altered knee biomechanics during sports-specific activities may be a contributing factor. Purpose/Hypothesis: To compare frontal plane knee joint angles and moments during a sidestep cutting maneuver in female soccer athletes who have undergone ACLR with those in athletes with no history of knee injury. It was hypothesized that athletes with a history of ACLR would exhibit increased knee abduction angles and knee adductor moments compared with those with no history of injury. Study Design: Controlled laboratory study. Methods: Twelve female soccer players with a history of ACLR served as the experimental group, and 12 female soccer players with no history of knee injury constituted the control group. Three-dimensional kinematics and ground-reaction forces were collected while each participant performed a sidestep cutting maneuver. Variables of interest included the knee abduction angle and knee adductor moment during the early deceleration phase of the cutting maneuver. Independent-samples t tests were used to evaluate differences between groups (P ≤ .05). Results: Participants in the ACLR group exhibited increased average knee abduction angles (ACLR: 3.8≤ vs control: 1.8≤; P = .03) and peak knee adductor moments (ACLR: 1.33 N·m/kg vs control: 0.80 N·m/kg; P = .004) compared with the control group. Conclusion: Female soccer players who have undergone ACLR and returned to sports participation exhibited increased knee abduction angles and knee adductor moments during the early deceleration phase of cutting compared with their healthy counterparts with no history of knee injury. Clinical Relevance: Even though athletes are able to return to sport after ACLR, they are at an increased risk for reinjury. It may be the case that the increased frontal plane knee angles and moments exhibited by these athletes after ACLR could be contributing to this risk for reinjury. Therefore, it is important that rehabilitation programs after ACLR include the restoration of frontal plane knee mechanics. © 2013 The Author(s).","ACL reconstruction; knee; sidestep cutting; valgus","Adult; Anterior Cruciate Ligament; Anterior Cruciate Ligament Reconstruction; Biomechanical Phenomena; Female; Humans; Knee Injuries; Knee Joint; Soccer; Young Adult; adult; anterior cruciate ligament; anterior cruciate ligament reconstruction; article; biomechanics; female; human; injury; knee; knee injury; pathophysiology; physiology; soccer; young adult; anterior cruciate ligament; injuries; knee; Knee Injuries; pathophysiology; physiology; soccer","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in National Collegiate Athletic Association basketball and soccer: A 13-year review, American Journal of Sports Medicine, 33, 4, pp. 524-530, (2005); Ardern C.L., Webster K.E., Taylor N.F., Return to the preinjury level of competitive sport after anterior cruciate ligament reconstruction surgery: Two-thirds of patients have not returned by 12 months after surgery, Am J Sports Med, 39, 3, pp. 538-543, (2011); Ardern C.L., Taylor N.F., Feller J.A., Return-to-sport outcomes at 2 to 7 years after anterior cruciate ligament reconstruction surgery, Am J Sports Med, 40, 1, pp. 41-48, (2012); Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer: NCAA data and review of literature, Am J Sports Med, 23, 6, pp. 694-701, (1995); Barber-Westin S.D., Noyes F.R., Factors used to determine return to unrestricted sports activities after anterior cruciate ligament reconstruction, Arthroscopy, 27, 12, pp. 1697-1705, (2011); Boden B.P., Dean C.S., Feagin Jr. J.A., Garrett Jr. W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Bush-Joseph C.A., Hurwitz D.E., Patel R.R., Bahrani Y., Garretson R., Bach Jr. B.R., Andriacchi T.P., Dynamic function after anterior cruciate ligament reconstruction with autologous patellar tendon, American Journal of Sports Medicine, 29, 1, pp. 36-41, (2001); Cascio B.M., Culp L., Cosgarea A.J., Return to play after anterior cruciate ligament reconstruction, Clin Sports Med, 23, 3, (2004); Delahunt E., Sweeney L., Chawke M., Lower limb kinematic alterations during drop vertical jumps in female athletes who have undergone anterior cruciate ligament reconstruction, J Orthop Res, 30, 1, pp. 72-78, (2012); Gokeler A., Hof A.L., Arnold M.P., Abnormal landing strategies after ACL reconstruction, Scand J Med Sci Sports, 20, 1, (2010); Gomez E., DeLee J.C., Farney W.C., Incidence of injury in Texas girls' high school basketball, American Journal of Sports Medicine, 24, 5, pp. 684-687, (1996); Griffin L.Y., Albohm M.J., Arendt E.A., Understanding and preventing noncontact anterior cruciate ligament injuries: A review of the Hunt Valley II meeting, January 2005, Am J Sports Med, 34, 9, pp. 1512-1532, (2006); Hartigan E.H., Axe M.J., Snyder-Mackler L., Time line for noncopers to pass return-to-sports criteria after anterior cruciate ligament reconstruction, J Orthop Sports Phys Ther, 40, 3, pp. 141-154, (2010); Hewett T.E., Myer G.D., Ford K.R., Heidt Jr. R.S., Colosimo A.J., McLean S.G., Van Den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, American Journal of Sports Medicine, 33, 4, pp. 492-501, (2005); Kaeding C.C., Aros B., Pedroza A., Allograft versus autograft anterior cruciate ligament reconstruction: Predictors of failure from a MOON prospective longitudinal cohort, Sports Health, 3, 1, pp. 73-81, (2011); Koga H., Nakamae A., Shima Y., Mechanisms for noncontact anterior cruciate ligament injuries: Knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, 11, pp. 2218-2225, (2010); Krosshaug T., Nakamae A., Boden B.P., Engebretsen L., Smith G., Slauterbeck J.R., Hewett T.E., Bahr R., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, American Journal of Sports Medicine, 35, 3, pp. 359-367, (2007); Kvist J., Rehabilitation following anterior cruciate ligament injury: Current recommendations for sports participation, Sports Medicine, 34, 4, pp. 269-280, (2004); Lohmander L.S., Ostenberg A., Englund M., Roos H., High prevalence of knee osteoarthritis, pain, and functional limitations in female soccer players twelve years after anterior cruciate ligament injury, Arthritis and Rheumatism, 50, 10, pp. 3145-3152, (2004); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clinical Biomechanics, 16, 5, pp. 438-445, (2001); McLean S.G., Huang X., Van Den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clinical Biomechanics, 20, 8, pp. 863-870, (2005); Messina D.F., Farney W.C., DeLee J.C., The incidence of injury in Texas high school basketball: A prospective study among male and female athletes, American Journal of Sports Medicine, 27, 3, pp. 294-299, (1999); Myklebust G., Bahr R., Return to play guidelines after anterior cruciate ligament surgery, British Journal of Sports Medicine, 39, 3, pp. 127-131, (2005); Orishimo K.F., Kremenic I.J., Mullaney M.J., Adaptations in single-leg hop biomechanics following anterior cruciate ligament reconstruction, Knee Surg Sports Traumatol Arthrosc, 18, 11, pp. 1587-1593, (2010); Ortiz A., Olson S., Trudelle-Jackson E., Landing mechanics during side hopping and crossover hopping maneuvers in noninjured women and women with anterior cruciate ligament reconstruction, PM R, 3, 1, pp. 13-20, (2011); Paterno M.V., Schmitt L.C., Ford K.R., Biomechanical measures during landing and postural stability predict second anterior cruciate ligament injury after anterior cruciate ligament reconstruction and return to sport, Am J Sports Med, 38, 10, pp. 1968-1978, (2010); Paterno M.V., Rauh M.J., Schmitt L.C., Incidence of contralateral and ipsilateral anterior cruciate ligament (ACL) injury after primary ACL reconstruction and return to sport, Clin J Sport Med, 22, 2, pp. 116-121, (2012); Piasecki D.P., Spindler K.P., Warren T.A., Andrish J.T., Parker R.D., Intraarticular injuries associated with anterior cruciate ligament tear: Findings at ligament reconstruction in high school and recreational athletes. An analysis of sex-based differences, American Journal of Sports Medicine, 31, 4, pp. 601-605, (2003); Pinczewski L.A., Lyman J., Salmon L.J., Russell V.J., Roe J., Linklater J., A 10-year comparison of anterior cruciate ligament reconstructions with hamstring tendon and patellar tendon autograft: A controlled, prospective trial, American Journal of Sports Medicine, 35, 4, pp. 564-574, (2007); Pollard C.D., Sigward S.M., Powers C.M., Gender differences in hip joint kinematics and kinetics during side-step cutting maneuver, Clinical Journal of Sport Medicine, 17, 1, pp. 38-42, (2007); Salmon L., Russell V., Musgrove T., Pinczewski L., Refshauge K., Incidence and risk factors for graft rupture and contralateral rupture after anterior cruciate ligament reconstruction, Arthroscopy - Journal of Arthroscopic and Related Surgery, 21, 8, pp. 948-957, (2005); Shelbourne K.D., Gray T., Haro M., Incidence of subsequent injury to either knee within 5 years after anterior cruciate ligament reconstruction with patellar tendon autograft, Am J Sports Med, 37, 2, pp. 246-251, (2009); Shin C.S., Chaudhari A.M., Andriacchi T.P., The effect of isolated valgus moments on ACL strain during single-leg landing: A simulation study, J Biomech, 42, 3, pp. 280-285, (2009); Sigward S.M., Powers C.M., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clinical Biomechanics, 21, 1, pp. 41-48, (2006); Thomee R., Kaplan Y., Kvist J., Muscle strength and hop performance criteria prior to return to sports after ACL reconstruction, Knee Surg Sports Traumatol Arthrosc, 19, 11, pp. 1798-1805, (2011); Withrow T.J., Huston L.J., Wojtys E.M., Ashton-Miller J.A., The effect of an impulsive knee valgus moment on in vitro relative ACL strain during a simulated jump landing, Clinical Biomechanics, 21, 9, pp. 977-983, (2006)","C.D. Pollard; Oregon State University-Cascades, Exercise and Sport Science, Cascades Hall, Bend, OR 97701, 2600 NW College Way, United States; email: christine.pollard@osucascades.edu","","","15523365","","AJSMD","23425687","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-84875851985" "Rouissi M.; Chtara M.; Owen A.; Chaalali A.; Chaouachi A.; Gabbett T.; Chamari K.","Rouissi, Mehdi (56719685200); Chtara, Moktar (24773368300); Owen, Adam (50262685600); Chaalali, Anis (37004223200); Chaouachi, Anis (58586134000); Gabbett, Tim (6603756203); Chamari, Karim (6602474344)","56719685200; 24773368300; 50262685600; 37004223200; 58586134000; 6603756203; 6602474344","Effect of leg dominance on change of direction ability amongst young elite soccer players","2016","Journal of Sports Sciences","34","6","","542","548","6","65","10.1080/02640414.2015.1129432","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955191849&doi=10.1080%2f02640414.2015.1129432&partnerID=40&md5=3f0a1db50d6b08f950c19653bd7c9548","Tunisian Research Laboratory “Sport Performance Optimization”, National Center of Medicine and Science in Sports, Tunis, Tunisia; Servette Football Club, Geneva, Switzerland; School of Exercise Science, Australian Catholic University, Brisbane, QLD, Australia; Aspetar, Athlete Health and Performance Research Centre, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar","Rouissi M., Tunisian Research Laboratory “Sport Performance Optimization”, National Center of Medicine and Science in Sports, Tunis, Tunisia; Chtara M., Tunisian Research Laboratory “Sport Performance Optimization”, National Center of Medicine and Science in Sports, Tunis, Tunisia; Owen A., Servette Football Club, Geneva, Switzerland; Chaalali A., Tunisian Research Laboratory “Sport Performance Optimization”, National Center of Medicine and Science in Sports, Tunis, Tunisia; Chaouachi A., Tunisian Research Laboratory “Sport Performance Optimization”, National Center of Medicine and Science in Sports, Tunis, Tunisia; Gabbett T., School of Exercise Science, Australian Catholic University, Brisbane, QLD, Australia; Chamari K., Aspetar, Athlete Health and Performance Research Centre, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar","Young soccer players often use one particular dominant leg (DL) to perform dynamic movements which require strength, resulting in leg asymmetry. The aim of this study was to compare, in young soccer players, the effect of using DL and non-dominant leg (NDL) on time performance of two change of direction (COD) manoeuvres in several angles of COD. Seventy-three young male soccer players (mean ± SD, age: 16.1 ± 1.8 year) participated in this study. Players performed 10-m sprints, either in a straight line or with a COD (5 m straight ahead and a turn of 45°, 90°, 135° and 180° to the opposite side of the DL or NDL). Testing for COD speed was conducted over two different manoeuvres: (1) sidestepping and (2) bypass. Maximal isometric voluntary contraction of the knee extensors/flexors and hip abductors/adductors was also measured using a handheld dynamometer. For sidestepping, COD performance with use of the DL was significantly better compared to the NDL (P < 0.05) in all angles of COD. However, bypass COD performance through use of the DL was better compared to the NDL only when turning at 135°. Additionally, strength of the knee extensors/flexors and hip abductors of the DL was significantly (P < 0.05) greater than the NDL. The use of the DL allows better COD performance than the NDL when sidestepping manoeuvre is used. However, the DL allows better COD performance than the NDL only at 135° with the use of the bypass manoeuvre. Furthermore, the greater strength of the DL compared to the NDL may contribute to COD performance difference between legs. © 2015 Taylor & Francis.","asymmetry; Change of direction; soccer; strength","Adolescent; Biomechanical Phenomena; Functional Laterality; Hip; Humans; Isometric Contraction; Knee; Leg; Male; Motor Skills; Muscle Strength; Soccer; Time and Motion Studies; adolescent; biomechanics; hemispheric dominance; hip; human; knee; leg; male; motor performance; muscle isometric contraction; muscle strength; physiology; soccer; task performance","Andrews J.R., McLeod W.D., Ward T., Howard K., The cutting mechanism, The American Journal ofSports Medicine, 5, 3, pp. 111-121, (1977); Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in FA Premier League soccer, Journal of Sports Science & Medicine, 6, 1, pp. 63-70, (2007); Buttifant D., Graham K., Cross K., Journal of Sports Science, 17, (1999); Chamari K., Hachana Y., Ahmed Y.B., Galy O., Sghaier F., Chatard J.C., Wisloff U., Field and laboratory testing in young elite soccer players, British Journal ofSports Medicine, 38, 2, pp. 191-196, (2004); Cohen J., Statistical power analysis for the behavioural sciences, pp. 23-97, (1988); Condello G., Minganti C., Lupo C., Benvenuti C., Pacini D., Tessitore A., Evaluation of change-of-direction movements in young rugby players, International Journal of Sports Physiology and Performance, 8, 1, pp. 52-56, (2013); Fousekis K., Tsepis E., Vagenas G., Lower limb strength in professional soccer players: Profile, asymmetry, and training age, Journal of Sports Science & Medicine, 9, 3, pp. 364-373, (2010); Havens K.L., Sigward S.M., Joint and segmental mechanics differ between cutting maneuvers in skilled athletes, Gait & Posture, 41, 1, pp. 33-38, (2015); Hewit J.K., Cronin J.B., Hume P.A., Kinematic factors affecting fast and slow straight and change-of-direction acceleration times, Journal ofStrength and Conditioning Research, 27, 1, pp. 69-75, (2013); Hopkins W.G., Measures of reliability in sports medicine and science, Sports Medicine, 30, 1, pp. 1-15, (2000); Hopkins W.G., A scale of magnitudes for effect statistics, (2009); Lehance C., Binet J., Bury T., Croisier J.L., Muscular strength, functional performances and injury risk in professional and junior elite soccer players, Scandinavian Journal of Medicine & Science inSports, 19, 2, pp. 243-251, (2009); Little T., Williams A.G., Specificity of acceleration, maximum speed, and agility in professional soccer players, Journal of Strength and Conditioning Research, 19, 1, pp. 76-78, (2005); Neptune R.R., Wright I.C., Van Den Bogert A.J., Muscle coordination and function during cutting movements, Medicine & Science inSports & Exercise, 31, 2, pp. 294-302, (1999); Pua Y.-H., Wrigley T.W., Cowan S.M., Bennell K.L., Intrarater test-retest reliability of hip range of motion and hip muscle strength measurements in persons with hip osteoarthritis, Archives of Physical Medicine and Rehabilitation, 89, 6, pp. 1146-1154, (2008); Rahnama N., Lees A., Bambaecichi E., A comparison of muscle strength and flexibility between the preferred and non-preferred leg in English soccer players, Ergonomics, 48, 11-14, pp. 1568-1575, (2005); Rand M.K., Ohtsuki T., EMG analysis of lower limb muscles in humans during quick change in running directions, Gait & Posture, 12, 2, pp. 169-183, (2000); Sheppard J.M., Young W.B., Agility literature review: Classifications, training and testing, Journal ofSports Sciences, 24, 9, pp. 919-932, (2006); Sigward S.M., Powers C.M., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clinical Biomechanics, 21, 1, pp. 41-48, (2006); Simonsen E.B., Magnusson S.P., Bencke J., Naesborg H., Havkrog M., Ebstrup J.F., Sorensen H., Can the hamstring muscles protect the anterior cruciate ligament during a side-cutting maneuver?, Scandinavian Journal of Medicine & Science in Sports, 10, 2, pp. 78-84, (2000); Suzuki Y., Ae M., Takenaka S., Fujii N., Comparison of support leg kinetics between side-step and cross-step cutting techniques, Sports Biomechanics, 13, 2, pp. 144-153, (2014); Thorborg K., Couppe C., Petersen J., Magnusson S.P., Holmich P., Eccentric hip adduction and abduction strength in elite soccer players and matched controls: A cross-sectional study, British Journal ofSports Medicine, 45, 1, pp. 10-13, (2011); Weir J.P., Quantifying test-retest reliability using the intraclass correlation coefficient and the SEM, Journal of Strength and Conditioning Research, 19, 1, pp. 231-240, (2005); Wong P.-L., Chamari K., Chaouachi A., Mao De W., Wisloff U., Hong Y., Difference in plantar pressure between the preferred and non-preferred feet in four soccer-related movements, British Journal ofSports Medicine, 41, 2, pp. 84-92, (2007); Young W.B., James R., Montgomery I., Is muscle power related to running speed with changes of direction?, The Journal of Sports Medicine and Physical Fitness, 42, 3, pp. 282-288, (2002)","M. Rouissi; Tunisian Research Laboratory “Sport Performance Optimization”, National Center of Medicine and Science in Sports, Tunis, Tunisia; email: mehdirwissi@gmail.com","","Routledge","02640414","","JSSCE","26710880","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-84955191849" "Malloy P.; Morgan A.; Meinerz C.; Geiser C.; Kipp K.","Malloy, Philip (55786598500); Morgan, Alexander (57224711717); Meinerz, Carolyn (56312219000); Geiser, Christopher (36876804800); Kipp, Kristof (36835336600)","55786598500; 57224711717; 56312219000; 36876804800; 36835336600","The association of dorsiflexion flexibility on knee kinematics and kinetics during a drop vertical jump in healthy female athletes","2015","Knee Surgery, Sports Traumatology, Arthroscopy","23","12","","3550","3555","5","58","10.1007/s00167-014-3222-z","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84948583513&doi=10.1007%2fs00167-014-3222-z&partnerID=40&md5=4bd3b9f570ff35dcbbfd82b6d2d48ffa","Department of Physical Therapy, Marquette University, Milwaukee, WI, United States","Malloy P., Department of Physical Therapy, Marquette University, Milwaukee, WI, United States; Morgan A., Department of Physical Therapy, Marquette University, Milwaukee, WI, United States; Meinerz C., Department of Physical Therapy, Marquette University, Milwaukee, WI, United States; Geiser C., Department of Physical Therapy, Marquette University, Milwaukee, WI, United States; Kipp K., Department of Physical Therapy, Marquette University, Milwaukee, WI, United States","Purpose: While previous studies have examined the association between ankle dorsiflexion flexibility and deleterious landing postures, it is not currently known how landing kinetics are influenced by ankle dorsiflexion flexibility. The purpose of this study was to examine whether ankle dorsiflexion flexibility was associated with landing kinematics and kinetics that have been shown to increase the risk of anterior cruciate ligament (ACL) injury in female athletes. Methods: Twenty-three female collegiate soccer players participated in a preseason screening that included the assessment of ankle dorsiflexion flexibility and lower-body kinematics and kinetics during a drop vertical jump task. Results: The results demonstrated that females with less ankle dorsiflexion flexibility exhibited greater peak knee abduction moments (r = −.442), greater peak knee abduction angles (r = .355), and less peak knee flexion angles (r = .385) during landing. The range of dorsiflexion flexibility for the current study was between 9° and 23° (mean = 15.0°; SD 3.9°). Conclusion: Dorsiflexion flexibility may serve as a useful clinical measure to predict poor landing postures and external forces that have been associated with increased knee injury risk. Rehabilitation specialists can provide interventions aimed at improving dorsiflexion flexibility in order to ameliorate the impact of this modifiable factor on deleterious landing kinematics and kinetics in female athletes. Level of evidence: II. © 2014, Springer-Verlag Berlin Heidelberg.","ACL injury; Ankle flexibility; Kinematics; Kinetics; Landing mechanics","Adolescent; Ankle Joint; Biomechanical Phenomena; Female; Humans; Kinetics; Knee; Knee Joint; Posture; Range of Motion, Articular; Soccer; Young Adult; adolescent; ankle; biomechanics; body posture; female; human; injuries; joint characteristics and functions; kinetics; knee; physiology; soccer; young adult","Agel J., Klossner D., Epidemiologic review of collegiate ACL injury rates across 14 sports: National Collegiate Athletic Association injury surveillance system data 2004–2005 through 2011–2012, Br J Sports Med, 48, (2014); Alentorn-Geli E., Myer G.D., Silvers H.J., Samitier G., Romero D., Prevention of non-contact anterior cruciate ligament injuries in soccer players: part 1: mechanisms of injury and underlying risk factors, Knee Surg Sports Traumatol Arthrosc, 17, pp. 705-729, (2009); Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer: NCAA data and review literature, Am J Sports Med, 23, pp. 694-701, (1995); Bell D.R., Padua D.A., Clark M.A., Muscle strength and flexibility characteristics of people displaying medial knee displacement, Arch Phys Med Rehab, 89, pp. 1323-1328, (2008); Caulfield B., Garrett M., Changes in ground reaction force during jumping in subjects with functional instability of the ankle joint, Clin Biomech, 19, pp. 617-621, (2004); Delahunt E., Monaghan K., Caulfild B., Changes in lower limb kinematics, kinetics, and muscle activity in subjects with functional instability of the ankle joints during a single leg drop jump, J Orthop Res, 24, pp. 1991-2000, (2006); Faul F., Erdefelder E., Buchner A., Lang A.G., Statistical power analysis using G*Power 3.1: tests for correlation and regression analyses, Behav Res Methods, 41, pp. 1149-1160, (2009); Fong C., Blackburn J.T., Norcross M.F., McGrath M., Padua D.A., Ankle-dorsiflexion range of motion and landing biomechanics, J Athl Train, 46, pp. 5-10, (2011); Geiser C.F., O'Connor K.M., Earl J.E., Effects of isolated hip abductor fatigue on frontal plane knee mechanics, Med Sci Sports Exerc, 42, pp. 535-545, (2010); Griffin L.Y., Albohm M.J., Arendt E.A., Et al., Understanding and preventing noncontact anterior cruciate ligament injuries: a review of the Hunt Valley meeting, January 2005, Am J Sports Med, 34, pp. 1512-1532, (2006); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: application to the knee, J Biomech Eng, 105, pp. 136-144, (1983); Gwinn D.E., Wilckens J.H., McDevitt E.R., Ross G., Kao T., The relative incidence of anterior cruciate ligament injury in men and women at the United States Naval Academy, Am J Sports Med, 28, pp. 98-102, (2000); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training and the incidence of knee injury in female athletes: a prospective study, Am J Sports Med, 27, pp. 699-706, (1999); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate injury risk in female athletes: a prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Hewett T.E., Torg J.S., Boden B.P., Video analysis of trunk and knee motion during non-contact anterior cruciate ligament injury in female athletes: lateral trunk and knee abduction motion are combined components of the injury mechanism, Br J Sports Med, 43, pp. 417-422, (2009); Hootman J.M., Dick R., Agel J., Epidemiology of collegiate injuries for 15 sports: summary and recommendations for injury prevention initiatives, J Athl Train, 42, pp. 311-319, (2007); Ishida T., Yamanaka M., Takeda N., Aoki Y., Knee rotation associated with dynamic knee valgus and toe direction, Knee, 21, pp. 563-566, (2014); Kristianslund E., Faul O., Myklebust G., Krosshaug T., Sidestep cutting technique and knee abduction loading: implications for ACL prevention exercises, Br J Sports Med, 48, pp. 779-783, (2014); Levine J.W., Kiapour A.M., Quatman C.E., Wordeman S.C., Goel V.K., Hewett T.E., Demetropoulus C.K., Clinically relevant injury patterns after an anterior cruciate ligament injury provide insight into injury mechanisms, Am J Sports Med, 41, pp. 385-395, (2013); Macrum E., Bell D.R., Boling M., Lewek M., Padua D., Effect of limiting ankle-dorsifleixon range of motion on lower extremity kinematics and muscle activation patterns during a squat, J Sports Rehabil, 21, pp. 144-150, (2012); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Et al., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes: 2-year follow up, Am J Sports Med, 33, pp. 1003-1010, (2005); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A.M., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, pp. 930-935, (1995); Mauntel T.C., Begalle R.L., Cram T.R., Frank B.S., Hirth C.J., Blackburn T., Padua D.A., The effects of lower extremity muscle activation and passive range of motion on single leg squat performance, J Strength Cond Res, 27, pp. 1813-1823, (2013); Myklebust G., Engebretsen L., Braekken I.H., Skjolberg A., Olsen O.E., Bahr R., Prevention of anterior cruciate ligament injuries in female team handball players: a prospective intervention study over three seasons, Clin J Sports Med, 13, pp. 71-78, (2003); Quatman C.C.E., Kiapour A.M., Demetrropoulus C.K., Kiapour A., Wordeman S.C., Levine J.W., Goel V.K., Hewett T.E., Preferential loading of the ACL compared with the MCL during landing: a novel sim approach yields multiplanar mechanisms of dynamic valgus during ACL injury, Am J Sports Med, 42, pp. 177-186, (2014); Padua D.A., Bell D.R., Clark M.A., Neuromuscular characteristics of individuals displaying excessive medial knee displacement, J Athl Train, 47, pp. 525-536, (2012); Sigward S.M., Ota S., Powers C.M., Predictors of frontal plane knee excursion during a drop land in young female soccer players, J Orthop Sports Phys Ther, 38, pp. 661-667, (2008); Stevenson J.H., Beattie C.S., Schwartz J.B., Busconi B.D., Assessing the effectiveness of neuromuscular training programs in reducing the incidence of anterior cruciate ligament injuries in female athletes: a systematic review, Am J Sports Med, (2014); Withrow T.J., Huston L.J., Wojyts E.M., Ashton-Miller J.A., The effect of an impulsive knee valgus moment on in vitro relative ACL strain during a simulated landing task, Clin Biomech, 21, pp. 977-983, (2006); Withrow T.J., Huston L.J., Wojyts E.M., Ashton-Miller J.A., The relationship between quadriceps muscle force, knee flexion, and anterior cruciate ligament strain in an in vitro simulated jump landing, Am J Sports Med, 34, pp. 269-274, (2006)","P. Malloy; Department of Physical Therapy, Marquette University, Milwaukee, United States; email: philip.malloy@marquette.edu","","Springer Verlag","09422056","","","25112598","English","Knee Surg. Sports Traumatol. Arthroscopy","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84948583513" "Orloff H.; Sumida B.; Chow J.; Habibi L.; Fujino A.; Kramer B.","Orloff, Heidi (24725234100); Sumida, Bryce (24725730000); Chow, Janna (24723763700); Habibi, Lalae (24724172800); Fujino, Aaron (24723903500); Kramer, Brian (24724802800)","24725234100; 24725730000; 24723763700; 24724172800; 24723903500; 24724802800","Ground reaction forces and kinematics of plant leg position during instep kicking in male and female collegiate soccer players","2008","Sports Biomechanics","7","2","","238","247","9","52","10.1080/14763140701841704","https://www.scopus.com/inward/record.uri?eid=2-s2.0-50249096213&doi=10.1080%2f14763140701841704&partnerID=40&md5=b0253c81a26d53685964ba46793444c9","Exercise Science Department, University of Puget Sound, Tacoma, WA, United States; Department of Sports Management, Seattle University, Seattle, WA, United States","Orloff H., Exercise Science Department, University of Puget Sound, Tacoma, WA, United States; Sumida B., Exercise Science Department, University of Puget Sound, Tacoma, WA, United States; Chow J., Department of Sports Management, Seattle University, Seattle, WA, United States; Habibi L., Exercise Science Department, University of Puget Sound, Tacoma, WA, United States; Fujino A., Exercise Science Department, University of Puget Sound, Tacoma, WA, United States; Kramer B., Exercise Science Department, University of Puget Sound, Tacoma, WA, United States","The players' ability to achieve the greatest distance in kicking is determined by their efficiency in transferring kinetic energy from the body to the ball. The purpose of this study was to compare the kinetics and kinematics of the plant leg position between male and female collegiate soccer players during instep kicking. Twenty-three soccer players (11 males and 12 females) were filmed in both the sagittal and posterior views while performing a maximal instep kick. Plant leg kinetic data were also collected using an AMTI 1000 force platform. There were no significant differences between the sexes in plant leg position, but females had significantly greater trunk lean, plant leg angle, and medial-lateral ground reaction force than the males. Males showed higher vertical ground reaction forces at ball contact, but there were no significant differences in ball speed at take-off between the sexes. Ball speed at take-off was inversely related to peak anterior-posterior ground reaction force (- 0.65). The anatomical differences between the sexes were reflected in greater trunk lean and lower leg angle in the females.","Ground reaction forces; Impulse; Instep kicking","Adult; Biomechanics; Biophysics; Female; Humans; Leg; Male; Soccer; Task Performance and Analysis; adult; article; biomechanics; biophysics; female; human; leg; male; physiology; sport; task performance","Barfield W.R., The biomechanics of kicking in soccer, Clinics in Sports Medicine, 4, pp. 711-727, (1998); Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, Journal of Sports Science and Medicine, 1, pp. 72-79, (2002); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, pp. 293-299, (2002); Enoka R.M., Neuromechanics of Human Movement, (2002); Harrison A., Mannering A., A biomechanical analysis of the instep kick in soccer with preferred and non-preferred foot, Proceedings of Oral Sessions, XXIV International Symposium on Biomechanics in Sports, pp. 572-575, (2006); Isokawa M., Lees A., A biomechanical analysis of the instep kick motion in soccer, Proceedings of Oral Sessions, Science and Football, pp. 449-455, (1988); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Medicine and Science in Sports and Exercise, 6, pp. 1017-1028, (2004); Kreighbaum E., Barthels K.M., Biomechanics: A Qualitative Approach for Studying Human Movement, (1996); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 3, pp. 211-234, (1998); Rodano R., Tavana R., Three-dimensional analysis of instep kick in professional soccer players, Science and Football II, pp. 357-361, (1993)","","","","17526116","","","18610775","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-50249096213" "Kollias I.; Hatzitaki V.; Papaiakovou G.; Giatsis G.","Kollias, Iraklis (6602722384); Hatzitaki, Vassilia (6602191141); Papaiakovou, George (6506821828); Giatsis, George (6507297066)","6602722384; 6602191141; 6506821828; 6507297066","Using principal components analysis to identify individual differences in vertical jump performance","2001","Research Quarterly for Exercise and Sport","72","1","","63","67","4","53","10.1080/02701367.2001.10608933","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035289985&doi=10.1080%2f02701367.2001.10608933&partnerID=40&md5=61ae10b833aea69270938c0a1f025c88","Department of Physical Education and Sports Sciences, Aristotelian University of Thessaloniki, Greece","Kollias I., Department of Physical Education and Sports Sciences, Aristotelian University of Thessaloniki, Greece; Hatzitaki V., Department of Physical Education and Sports Sciences, Aristotelian University of Thessaloniki, Greece; Papaiakovou G., Department of Physical Education and Sports Sciences, Aristotelian University of Thessaloniki, Greece; Giatsis G., Department of Physical Education and Sports Sciences, Aristotelian University of Thessaloniki, Greece","[No abstract available]","Assessment; Force platform; Sports; Squat jump","Adult; Biomechanics; Factor Analysis, Statistical; Greece; Humans; Male; Models, Biological; Movement; Soccer; Sports; Track and Field; adult; article; biological model; biomechanics; clinical trial; factorial analysis; Greece; human; male; movement (physiology); physiology; sport","Aragon-Vargas L., Gross M., Kinesiological factors in vertical jump performance: Differences among individuals, Journal of Applied Biomechanics, 73, pp. 24-44, (1997); Blattner S., Noble L., Relative effects of isokinetic and plyometric training on vertical jumping performance, Research Quarterly, 50, pp. 583-588, (1979); Bobbert M.F., Van Ingen Scheneau G.J., Coordination on Vertical Jumping./Ourna/of Biomechanics, 21, pp. 249-262, (1988); Bobbert M.F., van Soest A.J., Effects on muscle strengthening on vertical jump height: A simulation study, Medicine and Science in Sports Andexercise, 26, pp. 1012-1020, (1994); Brown M.E., Mayhew J.L., Boleach L.W., Effect of plyometric training on vertical jump performance in high school basketball players, Joumalofsports Medicine and physical Fitness, 26, pp. 1-4, (1986); Dowling J.J., Vamos L., Identification of kinetic and temporal factors related to vertical jump performance, Journal of Applied Biomechanics, 9, pp. 95-100, (1993); Fukashiro S., Komi P.V., Joint moment and mechanical power flow of the lower limb during vertical jump, International Journal of Sports Medicine, 8, pp. 15-21, (1987); Genuario S.E., Dolgener F.A., The relationship of isokinetic torque at two speeds to the vertical jump, Research Quarterly for Exercise and Sport, 51, pp. 593-598, (1980); Hay J.G., Dapena J., Wilson B.D., Andrews J., Woodward G., An analysis of joint contributions to performance of a gross motor skill, Biomechanics VI-B, pp. 64-70, (1978); Hudson J.L., Coordination of segments on the vertical jump, Medicine and Science in Sports and Exercise, 18, pp. 242-251, (1986); Kleinbaum D.G., Kupper L.I., Muller K.E., Applied Regression Analysis and Other Multivariable Methods, (1988); Podolsky A., Kaufman K.R., Cahalan T.D., Aleshinsky S.Y., Chao E.Y., The relationship of strength and jump height in figure skaters, American Journal of Sports Medicine, 75, pp. 400-405, (1990)","I. Kollias; Department of Physical Education and Sports Sciences, Aristotelian University of Thessaloniki, Thessaloniki, 546 06, Greece; email: hkollias@phed.auth.gr","","","02701367","","","11253321","English","Res. Q. Exerc. Sport","Article","Final","","Scopus","2-s2.0-0035289985" "Cooper R.A.; De Luigi A.J.","Cooper, Rory A. (7404337543); De Luigi, Arthur Jason (24922838600)","7404337543; 24922838600","Adaptive sports technology and biomechanics: Wheelchairs","2014","PM and R","6","8 SUPPL.","","S31","S39","8","54","10.1016/j.pmrj.2014.05.020","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84906055629&doi=10.1016%2fj.pmrj.2014.05.020&partnerID=40&md5=a6fb5ec54dc6926d24faf152094fad8c","Human Engineering Research Laboratories, Pittsburgh, PA, United States; Department of Rehabilitation Medicine, Medstar Georgetown University Hospital, Washington, DC, United States","Cooper R.A., Human Engineering Research Laboratories, Pittsburgh, PA, United States; De Luigi A.J., Department of Rehabilitation Medicine, Medstar Georgetown University Hospital, Washington, DC, United States","Wheelchair sports are an important tool in the rehabilitation of people with severe chronic disabilities and have been a driving force for innovation in technology and practice. In this paper, we will present an overview of the adaptive technology used in Paralympic sports with a special focus on wheeled technology and the impact of design on performance (defined as achieving the greatest level of athletic ability and minimizing the risk of injury). Many advances in manual wheelchairs trace their origins to wheelchair sports. Features of wheelchairs that were used for racing and basketball 25 or more years ago have become integral to the manual wheelchairs that people now use every day; moreover, the current components used on ultralight wheelchairs also have benefitted from technological advances developed for sports wheelchairs. For example, the wheels now used on chairs for daily mobility incorporate many of the components first developed for sports chairs. Also, advances in manufacturing and the availability of aerospace materials have driven current wheelchair design and manufacture. Basic principles of sports wheelchair design are universal across sports and include fit; minimizing weight while maintaining high stiffness; minimizing rolling resistance; and optimizing the sports-specific design of the chair. However, a well-designed and fitted wheelchair is not sufficient for optimal sports performance: the athlete must be well trained, skilled, and use effective biomechanics because wheelchair athletes face some unique biomechanical challenges. © 2014 American Academy of Physical Medicine and Rehabilitation.","","Computer-Aided Design; Equipment Design; Humans; Mechanical Phenomena; Sports for Persons with Disabilities; Wheelchairs; accident prevention; article; athlete; athletic performance; basketball; biomechanics; computer aided design; computer aided manufacturing; engineering and technology; equipment design; human; priority journal; racing; rigidity; risk reduction; rolling resistance; rugby; seat; soccer; softball; sport; sport injury; technology; tennis; triathlon; wheelchair; disabled sport; mechanics; physiology","Miller M.E., Laferrier J.Z., Teodorski E., Grindle G.G., De Luigi A.J., Cooper R.A., Sports participation and impact on rehabilitation and self-esteem of soldiers and veterans: A cross-sectional survey, (2011); Sporner M.L., Fitzgerald S.G., Dicianno B.E., Et al., Psychosocial Impact of Participation in the National Veterans Wheelchair Games and Winter Sports Clinic, Disabil Rehabil, 31, pp. 410-418, (2009); Cooper R.A., Aperspective on the ultralight wheelchair revolution, Technol Disabil, 5, pp. 383-392, (1996); Cooper R.A., Wheelchair racing sports science: A review, JRehabil Res Dev, 27, pp. 295-312, (1990); Collinger J.L., Boninger M.L., Koontz A.M., Et al., Shoulder biomechanics during the push phase of wheelchair propulsion: A multi-site study of persons with paraplegia, Arch Phys Med Rehabil, 89, pp. 667-676, (2008); Boninger M.L., Baldwin M., Cooper R.A., Koontz A.M., Chan L., Manual wheelchair pushrim biomechanics and axle position, Arch Phys Med Rehabil, 81, pp. 608-613, (2000); Laferrier J.Z., Rice I., Pearlman J.P., Sporner M.L., Cooper R., Liu H.Y., Cooper R.A., Technology to improve sports performance in wheelchair sports, Sports Technol, 5, pp. 4-19, (2012); MacLeish M.S., Cooper R.A., Harralson J., Ster J.F., Design of a composite monocoque frame racing wheelchair, JRehabil Res Dev, 30, pp. 233-249, (1993); Strohkendl H., The 50th Anniversary of Wheelchair Basketball: A History, (1996); Sindall P., Lenton J.P., Tolfrey K., Cooper R.A., Goosey-Tolfrey V., Wheelchair tennis match-play demands: effect of player rank and result, Int J Sports Physiol Perform, 8, pp. 28-37, (2013); Masters L.F., Mori A.A., Lange E.K., Adapted physical education: A practitioner's guide, Recreation for the Disabled Child, (1985); Sporner M., Grindle G.G., Kelleher A.R., Teodorski E., Cooper R.M., Cooper R.A., Quantification of activity during wheelchair basketball and rugby at the National Veterans Wheelchair Games: A pilot study, Prosthet Orthot Int, 33, pp. 210-217, (2009); Linker B., War's Waste: Rehabilitation in World War I America, (2011); Kumar A., Karmarkar A.M., Collins D.M., Souza A., Oyster M.L., Cooper R., Cooper R.A., Apilot study for quantifying driving characteristics during power wheelchair soccer, JRehabil Res Dev, 49, pp. 75-83, (2012); An Introduction to Rehabilitation Engineering, (2006); Cooper R.A., Boninger M.L., Brienza D.M., Et al., Pittsburgh wheelchair and seating biomechanics research program, JSoc Biomechanisms Jpn, 27, pp. 144-157, (2003); Liu H., Pearlman J., Cooper R., Et al., Evaluation of aluminum ultralight rigid wheelchairs using ANSI/RESNA standards and compared with other ultralight wheelchairs, JRehabil Res Dev, 47, pp. 441-446, (2010); Elanchezhian C., Selwyn T.S., Sundar G.S., Computer Aided Manufacturing, (2007); Powell J., Laser Cutting, (1993); Kruth J.-P., Leu M.C., Nakagawa T., Progress in additive manufacturing and rapid prototyping, CIRP Annals-Manufacturing Technol, 47, pp. 525-540, (1998); Daniel I.M., Ishai O., Engineering Mechanics of Composite Materials, (1994); Boninger M.L., Koontz A.M., Sisto S.A., Et al., Pushrim biomechanics and injury prevention in spinal cord injury: Recommendations based on CULP-SCI investigations, JRehabil Res Dev, 42, SUPPL 1, pp. 9-20, (2005); Koontz A.M., Cooper R.A., Boninger M.L., Baldwin M.A., An autoregressive modeling approach to analyzing wheelchair propulsion forces, Med Eng Phys, 23, pp. 285-291, (2001); Boninger M.L., Souza A.L., Cooper R.A., Fitzgerald S.G., Koontz A.M., Fay B.T., Propulsion patterns and pushrim biomechanics in manual wheelchair propulsion, Arch Phys Med Rehabil, 83, pp. 718-723, (2002); Ambrosio F., Boninger M.L., Souza A.L., Fitzgerald S.G., Koontz A.M., Cooper R.A., Biomechanics and strength of manual wheelchair users, JSpinal Cord Med, 28, pp. 407-414, (2005); Ferrara M.S., Davis R.W., Injuries to elite wheelchair athletes, Paraplegia, 28, pp. 335-341, (1990); Boninger M.L., Robertson R.N., Wolff M., Cooper R.A., Upper limb nerve entrapments in elite wheelchair racers, Am J Phys Med Rehabil, 75, pp. 170-176, (1996)","R.A. Cooper; Human Engineering Research Laboratories, Pittsburgh, PA 15206, 6425 Penn Avenue, Suite 400, United States; email: rcooper@pitt.edu","","Elsevier Inc.","19341482","","","25134750","English","PM R","Article","Final","","Scopus","2-s2.0-84906055629" "Rusu L.D.; Cosma G.G.; Cernaianu S.M.; Marin M.N.; Rusu P.F.A.; Ciocǎnescu D.P.; Neferu F.N.","Rusu, Ligia D (25230700500); Cosma, Germina Gh (41661150600); Cernaianu, Sorina M (24470933800); Marin, Mihnea N (55426520800); Rusu, Petre Florinel A (54884827900); Ciocǎnescu, Daniel P (56161996800); Neferu, Florin N (56162031500)","25230700500; 41661150600; 24470933800; 55426520800; 54884827900; 56161996800; 56162031500","Tensiomyography method used for neuromuscular assessment of muscle training","2013","Journal of NeuroEngineering and Rehabilitation","10","1","67","","","","50","10.1186/1743-0003-10-67","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879805880&doi=10.1186%2f1743-0003-10-67&partnerID=40&md5=01303fd34cac11bd7fbf771444418ac8","Sports Medicine and Kinesiology Department, University of Craiova, Craiova, Romania; Methodic and Theory Department, University of Craiova, Craiova, Romania; Applied Mechanics, University of Craiova, Craiova, Romania; University C. Brancusi, Tg. Jiu, Romania","Rusu L.D., Sports Medicine and Kinesiology Department, University of Craiova, Craiova, Romania; Cosma G.G., Methodic and Theory Department, University of Craiova, Craiova, Romania; Cernaianu S.M., Methodic and Theory Department, University of Craiova, Craiova, Romania; Marin M.N., Applied Mechanics, University of Craiova, Craiova, Romania; Rusu P.F.A., Applied Mechanics, University of Craiova, Craiova, Romania; Ciocǎnescu D.P., Methodic and Theory Department, University of Craiova, Craiova, Romania; Neferu F.N., University C. Brancusi, Tg. Jiu, Romania","Background: Within the structure of the skeletal muscle, there are fascicles of muscular fibers that are made up of serially distributed contractile elements. These elements are controlled by the nervous system, control which results in obtaining the muscular strength required for movement and its control. This study presents the neuromuscular assessment using tensiomyography method (TMG). Methods. We studied two groups of soccer junior players, group 1 (experimental group) and group 2 (control group), each containing 15 soccer players; we have considered two situations of muscle training: the combination between the isometric-concentric contraction for group 1 and the concentric contraction for group 2. TMG is the electrical stimulation of the muscle group and the recording of the muscle parameters resulting after the isometric contraction: time contraction (Tc) and displacement (Dm) at rectus femoris muscle (RF), pointing out two moments T1 and T2. Results: Tc decreasing and the Dm increasing involve a good response following the muscle training. For group 1, the Tc evolution is 22.54 ms/22.45 ms (T1/T2) for the right RF and 22.65 ms/22.26 ms for the left RF, while for group 2 results in a Tc evolution of 24.33 ms/28.57 ms (T1/T2) for the right RF and 25.74 ms/28.61 ms for the left RF. Dm for group 1, results in a 6.57 mm/6.85 mm (T1/T2) for the right RF and 6.92 mm/7.06 mm for the left RF, while for group 2, the Dm evolution shows 7.45 mm/5.83 mm (T1/T) for the right RF and 7.41 mm/6.26 mm for the left RF. Also, the evaluation on motor test indicated better results on T2 for the experimental group. Summarizing the results of Student t-test, we found significant differences between the averages of the two groups in all parameters (p < 0.001), the experimental group registering better results than the control one. Conclusions: It is possible to develop muscle training which can be monitored through TMG. © 2013 Rusu et al.; licensee BioMed Central Ltd.","Assessment; Contraction; Muscle; Neuromuscular; Tensiomyography; Training","Adolescent; Biomechanical Phenomena; Electric Stimulation; Functional Laterality; Humans; Isometric Contraction; Male; Muscle Contraction; Muscle Fatigue; Muscle Fibers, Skeletal; Muscle Strength; Muscle, Skeletal; Myography; Organ Size; Psychomotor Performance; Resistance Training; Soccer; adolescent; biomechanics; electrostimulation; hemispheric dominance; human; innervation; male; muscle contraction; muscle fatigue; muscle isometric contraction; muscle strength; myography; organ size; physiology; procedures; psychomotor performance; resistance training; skeletal muscle; soccer","Simunic B., Pisot R., Djordjevic S., Kugovnik O., Age related changes of the skeletal muscle contractile properties, Proceedings of the 4th International Scientific Conference on Kinesiology ""science and Profession - Challenge for the Future, pp. 570-573, (2005); Guyton A.C., Hall J.E., Textbook of Medical Physiology, (2000); Lieber R.L., Skeletal Muscle Structure and Function: Implication for Rehabilitation and Sports Medicine, (1992); Dahmane R., Valencic V., Knez N., Erzen I., Evaluation of the ability to make non-invasive estimation of muscle contractile properties on the basis of the muscle belly response, Medical and Biological Engineering and Computing, 39, 1, pp. 51-55, (2001); Dahmane R., Djordjevic S., Simunic B., Valencic V., Spatial fiber type distribution in normal human muscle: Histochemical and tensiomyographical evaluation, Journal of Biomechanics, 38, 12, pp. 2451-2459, (2005); Dahmane R., Djordjevic S., Smerdu V., Adaptive potential of human biceps femoris muscle demonstrated by histochemical, immunohistochemical and mechanomyographical methods, Medical and Biological Engineering and Computing, 44, 11, pp. 999-1006, (2006); Kent-Braun J.A., Ng A.V., Castro M., Weiner M.W., Gelinas D., Dudley G.A., Miller R.G., Strength, skeletal muscle composition, and enzyme activity in multiple sclerosis, Journal of Applied Physiology, 83, 6, pp. 1998-2004, (1997); Krizaj D., Grabljevec K., Evaluation of muscle dynamic response measured before and after treatment of spastic muscle with a BTX-A: A case study, Proceedings of the 11th Mediterranean Conference on Medical and Biological Enginering and Computing, 26-30 June, 2007, Ljubljana, Slovenia, Volume 16, pp. 393-396, (2007); Pisot R., Narici M., Simunic B., De Boer M.D., Seynnes O., Jurdana M., Biolo G., Mekiavic I.B., Whole muscle contractile parameters and thickness loss during 35-day bed rest, Eur J Appl Physiol, 2, 104, pp. 409-414, (2008); Remelius J.G., Hamill J., Kent-Braun J., Van Emmerik R.E., Gait initiation in multiple sclerosis, Mot Control, 12, 2, pp. 93-108, (2008); Saguil A., Evaluation of the Patient with Muscle Weakness, Am Fam Physician, 7, 71, pp. 25-30, (2005); Givon U., Zeilig G., Achiron A., Gait analysis in multiple sclerosis: Characterization of temporal-spatial parameters using GAITRite functional ambulation system, Gait Posture, 29, 1, pp. 138-142, (2009)","L.D. Rusu; Sports Medicine and Kinesiology Department, University of Craiova, Craiova, Romania; email: ligiarusu@hotmail.com","","","17430003","","","23822158","English","J. NeuroEng. Rehabil.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-84879805880" "Thompson J.A.; Tran A.A.; Gatewood C.T.; Shultz R.; Silder A.; Delp S.L.; Dragoo J.L.","Thompson, Julie A. (57204882084); Tran, Andrew A. (56949976200); Gatewood, Corey T. (57191365648); Shultz, Rebecca (56899833900); Silder, Amy (18438046700); Delp, Scott L. (7006426955); Dragoo, Jason L. (6603663340)","57204882084; 56949976200; 57191365648; 56899833900; 18438046700; 7006426955; 6603663340","Biomechanical Effects of an Injury Prevention Program in Preadolescent Female Soccer Athletes","2017","American Journal of Sports Medicine","45","2","","294","301","7","50","10.1177/0363546516669326","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85011591365&doi=10.1177%2f0363546516669326&partnerID=40&md5=c0cee9a895b2a897bd635debd5c98483","Department of Bioengineering, Stanford University, Stanford, CA, United States; Department of Orthopaedic Surgery, Stanford University, 450 Broadway, MC 6342, Redwood City, 94063, CA, United States; School of Medicine, Stanford University, Stanford, CA, United States; Department of Mechanical Engineering, Stanford University, Stanford, CA, United States","Thompson J.A., Department of Bioengineering, Stanford University, Stanford, CA, United States, Department of Orthopaedic Surgery, Stanford University, 450 Broadway, MC 6342, Redwood City, 94063, CA, United States; Tran A.A., Department of Orthopaedic Surgery, Stanford University, 450 Broadway, MC 6342, Redwood City, 94063, CA, United States, School of Medicine, Stanford University, Stanford, CA, United States; Gatewood C.T., Department of Orthopaedic Surgery, Stanford University, 450 Broadway, MC 6342, Redwood City, 94063, CA, United States; Shultz R., Department of Orthopaedic Surgery, Stanford University, 450 Broadway, MC 6342, Redwood City, 94063, CA, United States; Silder A., Department of Bioengineering, Stanford University, Stanford, CA, United States; Delp S.L., Department of Bioengineering, Stanford University, Stanford, CA, United States, Department of Orthopaedic Surgery, Stanford University, 450 Broadway, MC 6342, Redwood City, 94063, CA, United States, Department of Mechanical Engineering, Stanford University, Stanford, CA, United States; Dragoo J.L., Department of Orthopaedic Surgery, Stanford University, 450 Broadway, MC 6342, Redwood City, 94063, CA, United States","Background: Anterior cruciate ligament (ACL) injuries are common, and children as young as 10 years of age exhibit movement patterns associated with an ACL injury risk. Prevention programs have been shown to reduce injury rates, but the mechanisms behind these programs are largely unknown. Few studies have investigated biomechanical changes after injury prevention programs in children. Purpose/Hypothesis: To investigate the effects of the F-MARC 11+ injury prevention warm-up program on changes to biomechanical risk factors for an ACL injury in preadolescent female soccer players. We hypothesized that the primary ACL injury risk factor of peak knee valgus moment would improve after training. In addition, we explored other kinematic and kinetic variables associated with ACL injuries. Study Design: Controlled laboratory study. Methods: A total of 51 female athletes aged 10 to 12 years were recruited from soccer clubs and were placed into an intervention group (n = 28; mean [±SD] age, 11.8 ± 0.8 years) and a control group (n = 23; mean age, 11.2 ± 0.6 years). The intervention group participated in 15 in-season sessions of the F-MARC 11+ program (2 times/wk). Pre- and postseason motion capture data were collected during preplanned cutting, unanticipated cutting, double-leg jump, and single-leg jump tasks. Lower extremity joint angles and moments were estimated using OpenSim, a biomechanical modeling system. Results: Athletes in the intervention group reduced their peak knee valgus moment compared with the control group during the double-leg jump (mean [±standard error of the mean] pre- to posttest change, -0.57 ± 0.27 %BW×HT vs 0.25 ± 0.25 %BW×HT, respectively; P =.034). No significant differences in the change in peak knee valgus moment were found between the groups for any other activity; however, the intervention group displayed a significant pre- to posttest increase in peak knee valgus moment during unanticipated cutting (P =.044). Additional analyses revealed an improvement in peak ankle eversion moment after training during preplanned cutting (P =.015), unanticipated cutting (P =.004), and the double-leg jump (P =.016) compared with the control group. Other secondary risk factors did not significantly improve after training, although the peak knee valgus angle improved in the control group compared with the intervention group during unanticipated cutting (P =.018). Conclusion: The F-MARC 11+ program may be effective in improving some risk factors for an ACL injury during a double-leg jump in preadolescent athletes, most notably by reducing peak knee valgus moment. Clinical Relevance: This study provides motivation for enhancing injury prevention programs to produce improvement in other ACL risk factors, particularly during cutting and single-leg tasks. © American Orthopaedic Society for Sports Medicine.","ACL injury; biomechanics; intervention program; youth athletes","Anterior Cruciate Ligament Injuries; Athletic Injuries; Biomechanical Phenomena; Child; Female; Humans; Kinetics; Risk Factors; Soccer; Warm-Up Exercise; Anterior Cruciate Ligament Injuries; Athletic Injuries; biomechanics; child; female; human; injuries; kinetics; pathophysiology; risk factor; soccer; warm up","Alentorn-Geli E., Myer G.D., Silvers H.J., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players, part 2: A review of prevention programs aimed to modify risk factors and to reduce injury rates, Knee Surg Sports Traumatol Arthrosc, 17, 8, pp. 859-879, (2009); Bisseling R.W., Hof A.L., Handling of impact forces in inverse dynamics, J Biomech, 39, 13, pp. 2438-2444, (2006); Bjordal J.M., Arnly F., Hannestad B., Strand T., Epidemiology of anterior cruciate ligament injuries in soccer, Am J Sports Med, 25, 3, pp. 341-345, (1997); Boden B.P., Dean G.S., Feagin Ja J., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Boden B.P., Torg J.S., Knowles S.B., Hewett T.E., Video analysis of anterior cruciate ligament injury: Abnormalities in hip and ankle kinematics, Am J Sports Med, 37, 2, pp. 252-259, (2009); Brophy R.H., Schmitz L., Wright R.W., Et al., Return to play and future ACL injury risk after ACL reconstruction in soccer athletes from the Multicenter Orthopaedic Outcomes Network (MOON) group, Am J Sports Med, 40, 11, pp. 2517-2522, (2012); Caruthers E.J., Thompson J.A., Chaudhari A.M., Et al., Muscle forces and their contributions to vertical and horizontal acceleration of the center of mass during sit-to-stand transfer in young, healthy adults, J Appl Biomech; Delp S.L., Anderson F.C., Arnold A.S., Et al., OpenSim: Open-source software to create and analyze dynamic simulations of movement, IEEE Trans Biomed Eng, 54, 11, pp. 1940-1950, (2007); Distefano L.J., Blackburn J.T., Marshall S.W., Guskiewicz K.M., Garrett W.E., Padua D.A., Effects of an age-specific anterior cruciate ligament injury prevention program on lower extremity biomechanics in children, Am J Sports Med, 39, 5, pp. 949-957, (2011); Distefano L.J., Padua D.A., Distefano M.J., Marshall S.W., Influence of age, sex, technique, and exercise program on movement patterns after an anterior cruciate ligament injury prevention program in youth soccer players, Am J Sports Med, 37, 3, pp. 495-505, (2009); Donatelli R.A., Normal biomechanics of the foot and ankle, J Orthop Sports Phys Ther, 7, 3, pp. 91-95, (1985); Fauno P., Wulff Jakobsen B., Mechanism of anterior cruciate ligament injuries in soccer, Int J Sports Med, 27, 1, pp. 75-79, (2006); Feagin J.A.J., Lambert K.L., Mechanism of injury and pathology of anterior cruciate ligament injuries, Orthop Clin North Am, 16, 1, pp. 41-45, (1985); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, 10, pp. 1745-1750, (2003); Ford K.R., Myer G.D., Smith R.L., Vianello R.M., Seiwert S.L., Hewett T.E., A comparison of dynamic coronal plane excursion between matched male and female athletes when performing single leg landings, Clin Biomech (Bristol, Avon), 21, 1, pp. 33-40, (2006); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Med Sci Sports Exerc, 37, 1, pp. 124-129, (2005); Gianotti S.M., Marshall S.W., Hume P.A., Bunt L., Incidence of anterior cruciate ligament injury and other knee ligament injuries: A national population-based study, J Sci Med Sport, 12, 6, pp. 622-627, (2009); Grandstrand S.L., Pfeiffer R.P., Sabick M.B., Debeliso M., Shea K.G., The effects of a commercially available warm-up program on landing mechanics in female youth soccer players, J Strength Cond Res, 20, 2, pp. 331-335, (2006); Griffin L.Y., Agel J., Albohm M.J., Et al., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, J Am Acad Orthop Surg, 8, 3, pp. 141-150, (2000); Grooms D.R., Palmer T., Onate J.A., Myer G.D., Grindstaff T., Soccer-specific warm-up and lower extremity injury rates in collegiate male soccer players, J Athl Train, 48, 6, pp. 782-789, (2013); Gross M.T., Lower quarter screening for skeletal malalignment: Suggestions for orthotics and shoewear, J Orthop Sports Phys Ther, 21, 6, pp. 389-405, (1995); Hass C.J., Schick E.A., Tillman M.D., Chow J.W., Brunt D., Cauraugh J.H., Knee biomechanics during landings: Comparison of pre- and postpubescent females, Med Sci Sports Exerc, 37, 1, pp. 100-107, (2005); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes: A prospective study, Am J Sports Med, 27, 6, pp. 699-706, (1999); Hewett T.E., Myer G.D., Ford K.R., Anterior cruciate ligament injuries in female athletes, part 1: Mechanisms and risk factors, Am J Sports Med, 34, 2, pp. 299-311, (2006); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J Bone Joint Surg Am, 86, 8, pp. 1601-1608, (2004); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Hewett T.E., Torg J.S., Boden B.P., Video analysis of trunk and knee motion during non-contact anterior cruciate ligament injury in female athletes: Lateral trunk and knee abduction motion are combined components of the injury mechanism, Br J Sports Med, 43, 6, pp. 417-422, (2009); Ireland M.L., Anterior cruciate ligament injury in female athletes: Epidemiology, J Athl Train, 34, 2, pp. 150-154, (1999); Kernozek T.W., Torry M.R., Van Hoof H., Cowley H., Tanner S., Gender differences in frontal and sagittal plane biomechanics during drop landings, Med Sci Sports Exerc, 37, 6, pp. 1003-1012, (2005); Ladenhauf H.N., Graziano J., Marx R.G., Anterior cruciate ligament prevention strategies: Are they effective in young athletes. Current concepts and review of literature, Curr Opin Pediatr, 25, 1, pp. 64-71, (2013); Longo U.G., Loppini M., Berton A., Marinozzi A., Maffulli N., Denaro V., The FIFA 11+ program is effective in preventing injuries in elite male basketball players: A cluster randomized controlled trial, Am J Sports Med, 40, 5, pp. 996-1005, (2012); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Et al., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes: 2-year follow-up, Am J Sports Med, 33, 7, pp. 1003-1010, (2005); McNair P.J., Marshall R.N., Matheson J.A., Important features associated with acute anterior cruciate ligament injury, N Z Med J, 103, 901, pp. 537-539, (1990); Mitchell L.C., Ford K.R., Minning S., Myer G.D., Mangine R.E., Hewett T.E., Medial foot loading on ankle and knee biomechanics, N Am J Sports Phys Ther, 3, 3, pp. 133-140, (2008); Myer G.D., Brunner H.I., Melson P.G., Paterno M.V., Ford K.R., Hewett T.E., Specialized neuromuscular training to improve neuromuscular function and biomechanics in a patient with quiescent juvenile rheumatoid arthritis, Phys Ther, 85, 8, pp. 791-802, (2005); Myklebust G., Engebretsen L., Braekken I.H., Skjolberg A., Olsen O.E., Bahr R., Prevention of anterior cruciate ligament injuries in female team handball players: A prospective intervention study over three seasons, Clin J Sport Med, 13, 2, pp. 71-78, (2003); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med, 32, 4, pp. 1002-1012, (2004); Padua D.A., Marshall S.W., Boling M.C., Thigpen C.A., Garrett We J., Beutler A.I., The Landing Error Scoring System (LESS) Is a valid and reliable clinical assessment tool of jump-landing biomechanics: The JUMP-ACL study, Am J Sports Med, 37, 10, pp. 1996-2002, (2009); Prodromos C.C., Han Y., Rogowski J., Joyce B., Shi K., A meta-analysis of the incidence of anterior cruciate ligament tears as a function of gender, sport, and a knee injury-reduction regimen, Arthroscopy, 23, 12, pp. 1320-1325, (2007); Quatman C.E., Ford K.R., Myer G.D., Hewett T.E., Maturation leads to gender differences in landing force and vertical jump performance: A longitudinal study, Am J Sports Med, 34, 5, pp. 806-813, (2006); Soligard T., Myklebust G., Steffen K., Et al., Comprehensive warm-up programme to prevent injuries in young female footballers: Cluster randomised controlled trial, BMJ, 337, (2008); Steffen K., Myklebust G., Olsen O.E., Holme I., Bahr R., Preventing injuries in female youth football: A cluster-randomized controlled trial, Scand J Med Sci Sports, 18, 5, pp. 605-614, (2008); Swartz E.E., Decoster L.C., Russell P.J., Croce R.V., Effects of developmental stage and sex on lower extremity kinematics and vertical ground reaction forces during landing, J Athl Train, 40, 1, pp. 9-14, (2005); Toth A.P., Cordasco F.A., Anterior cruciate ligament injuries in the female athlete, J Gend Specif Med, 4, 4, pp. 25-34, (2001); Traina S.M., Bromberg D.F., ACL injury patterns in women, Orthopedics, 20, 6, pp. 545-549, (1997)","J.L. Dragoo; Department of Orthopaedic Surgery, Stanford University, Redwood City, 450 Broadway, MC 6342, 94063, United States; email: jdragoo@stanford.edu","","SAGE Publications Inc.","03635465","","AJSMD","27793803","English","Am. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85011591365" "Rich A.M.; Filben T.M.; Miller L.E.; Tomblin B.T.; Van Gorkom A.R.; Hurst M.A.; Barnard R.T.; Kohn D.S.; Urban J.E.; Stitzel J.D.","Rich, Andrea M. (57209829274); Filben, Tanner M. (57209830121); Miller, Logan E. (55955121600); Tomblin, Brian T. (57209822585); Van Gorkom, Aaron R. (57209837060); Hurst, Michael A. (57209839005); Barnard, Ryan T. (36090657300); Kohn, Dena S. (57209825221); Urban, Jillian E. (36119491100); Stitzel, Joel D. (7003389866)","57209829274; 57209830121; 55955121600; 57209822585; 57209837060; 57209839005; 36090657300; 57209825221; 36119491100; 7003389866","Development, Validation and Pilot Field Deployment of a Custom Mouthpiece for Head Impact Measurement","2019","Annals of Biomedical Engineering","47","10","","2109","2121","12","55","10.1007/s10439-019-02313-1","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85068853476&doi=10.1007%2fs10439-019-02313-1&partnerID=40&md5=90a442eed8e62822ed0e4595ba99bbae","Department of Biomedical Engineering, Wake Forest School of Medicine, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States; School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States; Department of Biostatistics and Data Science, Wake Forest School of Medicine, 525 Vine St, Winston-Salem, 27101, NC, United States; Hurst Dental Laboratory, 946 Brookstown Avenue, Winston-Salem, 27101, NC, United States","Rich A.M., Department of Biomedical Engineering, Wake Forest School of Medicine, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States; Filben T.M., Department of Biomedical Engineering, Wake Forest School of Medicine, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States; Miller L.E., Department of Biomedical Engineering, Wake Forest School of Medicine, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States; Tomblin B.T., Department of Biomedical Engineering, Wake Forest School of Medicine, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States; Van Gorkom A.R., Department of Biomedical Engineering, Wake Forest School of Medicine, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States; Hurst M.A., Hurst Dental Laboratory, 946 Brookstown Avenue, Winston-Salem, 27101, NC, United States; Barnard R.T., Department of Biomedical Engineering, Wake Forest School of Medicine, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States, Department of Biostatistics and Data Science, Wake Forest School of Medicine, 525 Vine St, Winston-Salem, 27101, NC, United States; Kohn D.S., Department of Biomedical Engineering, Wake Forest School of Medicine, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States; Urban J.E., Department of Biomedical Engineering, Wake Forest School of Medicine, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States; Stitzel J.D., Department of Biomedical Engineering, Wake Forest School of Medicine, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, 575 N. Patterson Avenue, Suite 120, Winston-Salem, 27101, NC, United States","The objective of this study was to develop a mouthpiece sensor with improved head kinematic measurement for use in non-helmeted and helmeted sports through laboratory validation and pilot field deployment in female youth soccer. For laboratory validation, data from the mouthpiece sensor was compared to standard sensors mounted in a headform at the center of gravity as the headform was struck with a swinging pendulum. Linear regression between peak kinematics measured from the mouthpiece and headform showed strong correlation, with r2 values of 0.95 (slope = 1.02) for linear acceleration, 1.00 (slope = 1.00) for angular velocity, and 0.97 (slope = 0.96) for angular acceleration. In field deployment, mouthpiece data were collected from four female youth soccer players and time-synchronized with film. Film-verified events (n = 915) were observed over 9 practices and 5 games, and 632 were matched to a corresponding mouthpiece event. This resulted in an overall sensitivity of 69.2% and a positive predictive value of 80.3%. This validation and pilot field deployment data demonstrates that the mouthpiece provides highly accurate measurement of on-field head impact data that can be used to further study the effects of impact exposure in both helmeted and non-helmeted sports. © 2019, Biomedical Engineering Society.","Concussion; Head impact exposure; Head kinematics; Instrumentation; Mouthpiece; Pediatric; Soccer; Subconcussive impacts","Accelerometry; Biomechanical Phenomena; Equipment Design; Female; Head; Humans; Mouth Protectors; Pilot Projects; Reproducibility of Results; Soccer; Telemetry; Kinematics; Pediatrics; Concussion; Head impact; Instrumentation; Mouthpiece; Soccer; Subconcussive impacts; acceleration; Article; controlled study; data processing; face validity; feasibility study; female; head injury; human; human experiment; instrument validation; kinematics; measurement accuracy; normal human; predictive value; priority journal; sensitivity analysis; soccer player; accelerometry; biomechanics; devices; equipment design; head; mouth protector; physiology; pilot study; reproducibility; soccer; telemetry; Sports","Allison M.A., Kang Y.S., Bolte J.H.T., Maltese M.R., Arbogast K.B., Validation of a helmet-based system to measure head impact biomechanics in ice hockey, Med. Sci. Sports Exerc., 46, pp. 115-123, (2014); Bartsch A., Samorezov S., Benzel E., Miele V., Brett D., Validation of an “Intelligent Mouthguard” single event head impact dosimeter, Stapp Car Crash J., 58, pp. 1-27, (2014); Beckwith J.G., Chu J.J., Greenwald R.M., Validation of a noninvasive system for measuring head acceleration for use during boxing competition, J. Appl. Biomech., 23, pp. 238-244, (2007); Beckwith J.G., Greenwald R.M., Chu J.J., Measuring head kinematics in football: correlation between the head impact telemetry system and Hybrid III headform, Ann. Biomed. Eng., 40, pp. 237-248, (2012); Camarillo D.B., Shull P.B., Mattson J., Shultz R., Garza D., An instrumented mouthguard for measuring linear and angular head impact kinematics in American football, Ann. Biomed. Eng., 41, pp. 1939-1949, (2013); Campbell K.R., Warnica M.J., Levine I.C., Brooks J.S., Laing A.C., Burkhart T.A., Dickey J.P., Laboratory evaluation of the gForce tracker, a head impact kinematic measuring device for use in football helmets, Ann. Biomed. Eng., 44, pp. 1246-1256, (2016); Chrisman S.P.D., Ebel B.E., Stein E., Lowry S.J., Rivara F.P., Head impact exposure in youth soccer and variation by age and sex, Clin. J. Sport Med., 29, pp. 3-10, (2019); Chrisman S.P., Mac Donald C.L., Friedman S., Andre J., Rowhani-Rahbar A., Drescher S., Stein E., Holm M., Evans N., Poliakov A.V., Ching R.P., Schwien C.C., Vavilala M.S., Rivara F.P., Head impact exposure during a weekend youth soccer tournament, J. Child Neurol., 31, pp. 971-978, (2016); Cobb B.R., Tyson A.M., Rowson S., Head acceleration measurement techniques: Reliability of angular rate sensor data in helmeted impact testing, Proc. Inst. Mech. Eng. Part P, (2017); Covassin T., Swanik C.B., Sachs M.L., Sex differences and the incidence of concussions among collegiate athletes, J. Athl. Train., 38, pp. 238-244, (2003); Engineers S.O.A., Instrumentation for Impact Test, Part 1: Electronic Instrumentation, (1995); FIFA Big Count 2006: 270 Million People Active in Football, (2007); Funk J.R., Cormier J.M., Bain C.E., Guzman H., Bonugli E., Manoogian S.J., Head and neck loading in everyday and vigorous activities, Ann. Biomed. Eng., 39, pp. 766-776, (2011); Gessel L.M., Fields S.K., Collins C.L., Dick R.W., Comstock R.D., Concussions among United States high school and collegiate athletes, J. Athl. Train., 42, pp. 495-503, (2007); Hanlon E.M., Bir C.A., Real-time head acceleration measurement in girls’ youth soccer, Med. Sci. 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Biomech., 49, pp. 1845-1853, (2016); Lamond L.C., Caccese J.B., Buckley T.A., Glutting J., Kaminski T.W., Linear acceleration in direct head contact across impact type, player position, and playing scenario in collegiate women’s soccer players, J. Athl. Train., 53, pp. 115-121, (2018); Lightman K., Silicon gets sporty, IEEE Spectr., 53, pp. 48-53, (2016); Mainwaring L., Ferdinand Pennock K.M., Mylabathula S., Alavie B.Z., Subconcussive head impacts in sport: a systematic review of the evidence, Int. J. Psychophysiol., 132, pp. 39-54, (2018); Manoogian S., McNeely D., Duma S., Brolinson G., Greenwald R., Head acceleration is less than 10 percent of helmet acceleration in football impacts, Biomed. Sci. Instrum., 42, pp. 383-388, (2006); Miller L.E., Kuo C., Wu L.C., Urban J.E., Camarillo D.B., Stitzel J.D., Validation of a custom instrumented retainer form factor for measuring linear and angular head impact kinematics, J. Biomech. Eng., 140, (2018); Miller L., Pinkerton E., Fabian K., Wu L., Espeland M., Lamond L., Miles C., Camarillo D., Stitzel J., Urban J., Characterizing head impact exposure in youth female soccer with a custom-instrumented mouthpiece, Res. Sports Med., (2019); Naunheim R.S., Bayly P.V., Standeven J., Neubauer J.S., Lewis L.M., Genin G.M., Linear and angular head accelerations during heading of a soccer ball, Med. Sci. Sports Exerc., 35, pp. 1406-1412, (2003); Nevins D., Smith L., Kensrud J., Laboratory evaluation of wireless head impact sensor, Procedia Eng., 112, pp. 175-179, (2015); O'Kane J.W., Is heading in youth soccer dangerous play?, Phys. Sportsmed., 44, pp. 190-194, (2016); Press J.N., Rowson S., Quantifying head impact exposure in collegiate women’s soccer, Clin. J. Sport Med., 27, pp. 104-110, (2017); Rice S.G., Medical conditions affecting sports participation, Pediatrics, 121, pp. 841-848, (2008); Rowson S., Beckwith J.G., Chu J.J., Leonard D.S., Greenwald R.M., Duma S.M., A six degree of freedom head acceleration measurement device for use in football, J. Appl. Biomech., 27, pp. 8-14, (2011); Rowson S., Duma S.M., Greenwald R.M., Beckwith J.G., Chu J.J., Guskiewicz K.M., Mihalik J.P., Crisco J.J., Wilcox B.J., McAllister T.W., Maerlender A.C., Broglio S.P., Schnebel B., Anderson S., Brolinson P.G., Can helmet design reduce the risk of concussion in football?, J. Neurosurg., 120, pp. 919-922, (2014); Self B.P., Beck J., Schill D., Eames C., Knox T., Plaga J., Head accelerations during soccer heading, Eng. Sport, 6, pp. 81-86, (2006); Siegmund G.P., Guskiewicz K.M., Marshall S.W., DeMarco A.L., Bonin S.J., Laboratory validation of two wearable sensor systems for measuring head impact severity in football players, Ann. Biomed. Eng., 44, pp. 1257-1274, (2016); Stewart W.F., Kim N., Ifrah C.S., Lipton R.B., Bachrach T.A., Zimmerman M.E., Kim M., Lipton M.L., Symptoms from repeated intentional and unintentional head impact in soccer players, Neurology, 88, pp. 901-908, (2017); Laboratory Validation of the SIM-G Head Impact Sensor, (2014); Tyson A.M., Duma S.M., Rowson S., Laboratory evaluation of low-cost wearable sensors for measuring head impacts in sports, J. Appl. Biomech., 34, pp. 320-326, (2018); Wu L.C., Laksari K., Kuo C., Luck J.F., Kleiven S., Dale' Bass C.R., Camarillo D.B., Bandwidth and sample rate requirements for wearable head impact sensors, J. Biomech., 49, pp. 2918-2924, (2016); Wu L.C., Nangia V., Bui K., Hammoor B., Kurt M., Hernandez F., Kuo C., Camarillo D.B., In vivo evaluation of wearable head impact sensors, Ann. Biomed. Eng., 44, pp. 1234-1245, (2016); Wu L.C., Zarnescu L., Nangia V., Cam B., Camarillo D.B., A head impact detection system using SVM classification and proximity sensing in an instrumented mouthguard, IEEE Trans. Biomed. Eng., 61, pp. 2659-2668, (2014); Yang Y.T., Baugh C.M., US youth soccer concussion policy: heading in the right direction, JAMA Pediatr., 170, pp. 413-414, (2016); Yoganandan N., Pintar F.A., Zhang J., Baisden J.L., Physical properties of the human head: mass, center of gravity and moment of inertia, J. Biomech., 42, pp. 1177-1192, (2009)","J.D. Stitzel; Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, 575 N. Patterson Avenue, Suite 120, 27101, United States; email: jstitzel@wakehealth.edu","","Springer New York LLC","00906964","","ABMEC","31297724","English","Ann Biomed Eng","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85068853476" "Cortes N.; Onate J.; van Lunen B.","Cortes, Nelson (23033673100); Onate, James (7004831141); van Lunen, Bonnie (6506227549)","23033673100; 7004831141; 6506227549","Pivot task increases knee frontal plane loading compared with sidestep and drop-jump","2011","Journal of Sports Sciences","29","1","","83","92","9","54","10.1080/02640414.2010.523087","https://www.scopus.com/inward/record.uri?eid=2-s2.0-78649757198&doi=10.1080%2f02640414.2010.523087&partnerID=40&md5=613dcd689c4867a650560174fbffce1d","Sports Medicine Assessment, Research and Testing Laboratory, George Mason University, Fairfax, VA 22030, 210 Bull Run Hall, 4400 University Drive, United States; School of Allied Medical Professions, Ohio State University, Columbus, OH, United States; Human Movement Sciences, Old Dominion University, Norfolk, VA, United States","Cortes N., Sports Medicine Assessment, Research and Testing Laboratory, George Mason University, Fairfax, VA 22030, 210 Bull Run Hall, 4400 University Drive, United States; Onate J., School of Allied Medical Professions, Ohio State University, Columbus, OH, United States; van Lunen B., Human Movement Sciences, Old Dominion University, Norfolk, VA, United States","The purpose of this study was to assess kinematic and kinetic differences between three tasks (drop-jump, sidestep cutting, and pivot tasks) commonly used to evaluate anterior cruciate ligament risk factors. Nineteen female collegiate soccer athletes from a Division I institution participated in this study. Participants performed a drop-jump task, and two unanticipated tasks, sidestep cutting and pivot. Repeated-measures analyses of variance were conducted to assess differences in the kinematic and kinetic parameters between tasks. The pivot task had lower knee flexion (-41.2+8.8°) and a higher valgus angle (-7.6±10.1°) than the sidestep (-53.9±9.4° and -2.9±10.0°, respectively) at maximum vertical ground reaction force. The pivot task (0.8±0.3 multiples of body weight) had higher peak posterior ground reaction force than the dropjump (0.3±0.06 multiples of body weight) and sidestep cutting (0.3±0.1 multiples of body weight), as well as higher internal varus moments (0.72±0.3 N · m/kg · m) than the drop-jump (0.14±0.07 N · m/kg · m) and sidestep (0.17±0.5 N · m/kg · m) at peak stance. During the pivot task, the athletes presented a more erect posture and adopted strategies that may place higher loads on the knee joint and increase the strain on the anterior cruciate ligament. © 2011 Taylor & Francis.","Ankle; Anterior cruciate ligament; Biomechanics; Hip; Knee","Adolescent; Anterior Cruciate Ligament; Athletes; Biomechanics; Female; Humans; Knee; Movement; Risk Factors; Soccer; Universities; Weight-Bearing; Young Adult; adolescent; adult; anterior cruciate ligament; article; athlete; biomechanics; female; human; injury; knee; movement (physiology); pathophysiology; physiology; risk factor; sport; university; weight bearing","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A 13-year review, American Journal of Sports Medicine, 33, pp. 524-530, (2005); Bendjaballah M.Z., Shirazi-Adl A., Zukor D.J., Finite element analysis of human knee joint in varus-valgus, Clinical Biomechanics (Bristol, Avon), 12, pp. 139-148, (1997); Blackburn J.T., Padua D.A., Sagittal-plane trunk position, landing forces, and quadriceps electromyographic activity, Journal of Athletic Training, 44, pp. 174-179, (2009); Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, American Journal of Sports Medicine, 30, pp. 261-267, (2002); Colby S., Francisco A., Yu B., Kirkendall D., Finch M., Garrett Jr. W., Electromyographic and kinematic analysis of cutting maneuvers: Implications for anterior cruciate ligament injury, American Journal of Sports Medicine, 28, pp. 234-240, (2000); Cortes N., Onate J.A., Abrantes J., Gagen L., Dowling E., Van Lunen B., Effects of gender and foot-landing techniques on lower extremity kinematics during drop-jump landings, Journal of Applied Biomechanics, 23, pp. 289-299, (2007); Davis I., Ireland M.L., Hanaki S., ACL injuries - the gender bias, Journal of Orthopaedics and Sports Physical Therapy, 37, 2, (2007); Decker M.J., Torry M.R., Wyland D.J., Sterett W.I., Richard Steadman J., Gender differences in lower extremity kinematics, kinetics and energy absorption during landing, Clinical Biomechanics (Bristol, Avon), 18, pp. 662-669, (2003); Dempster W.T., Space requirements of the seated operator: Geometrical, kinematic, and mechanical aspects of the body with special reference to the limbs, (1955); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Medicine and Science in Sports and Exercise, 35, pp. 1745-1750, (2003); Ford K.R., Myer G.D., Smith R.L., Vianello R.M., Seiwert S.L., Hewett T.E., A comparison of dynamic coronal plane excursion between matched male and female athletes when performing single leg landings, Clinical Biomechanics (Bristol, Avon), 21, pp. 33-40, (2006); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Medicine and Science in Sports and Exercise, 37, pp. 124-129, (2005); Greig M., The influence of soccer-specific activity on the kinematics of an agility sprint, European Journal of Sport Science, 9, pp. 23-33, (2009); Griffin L.Y., Albohm M.J., Arendt E.A., Bahr R., Beynnon B.D., Demaio M., Et al., Understanding and preventing noncontact anterior cruciate ligament injuries: A review of the Hunt Valley II meeting, January 2005, American Journal of Sports Medicine, 34, pp. 1512-1532, (2006); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, Journal of Biomechanical Engineering, 105, pp. 136-144, (1983); Hewett T.E., Myer G.D., Ford K.R., Heidt Jr. R.S., Colosimo A.J., McLean S.G., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, American Journal of Sports Medicine, 33, pp. 492-501, (2005); Kadaba M.P., Ramakrishnan H.K., Wootten M.E., Measurement of lower extremity kinematics during level walking, Journal of Orthopaedic Research, 8, pp. 383-392, (1990); Kernozek T.W., Ragan R.J., Estimation of anterior cruciate ligament tension from inverse dynamics data and electromyography in females during drop landing, Clinical Biomechanics (Bristol, Avon), 23, pp. 1279-1286, (2008); Kernozek T.W., Torry M.R., Van Hoof H., Cowley H., Tanner S., Gender differences in frontal and sagittal plane biomechanics during drop landings, Medicine and Science in Sports and Exercise, 37, pp. 1003-1012, (2005); Lephart S.M., Ferris C.M., Riemann B.L., Myers J.B., Fu F.H., Gender differences in strength and lower extremity kinematics during landing, Clinical Orthopaedics and Related Research, 401, pp. 162-169, (2002); McLean S.G., Huang X., Su A., van den Bogert A.J., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clinical Biomechanics (Bristol, Avon), 19, pp. 828-838, (2004); McLean S.G., Huang X., van den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clinical Biomechanics (Bristol, Avon), 20, pp. 863-870, (2005); 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Sigward S., Powers C.M., The influence of experience on knee mechanics during side-step cutting in females, Clinical Biomechanics (Bristol, Avon), 21, pp. 740-747, (2006); Winter D.A., Biomechanics and motor control of human movement, pp. 75-102, (2005); Wojtys E.M., Ashton-Miller J.A., Huston L.J., A gender-related difference in the contribution of the knee musculature to sagittal-plane shear stiffness in subjects with similar knee laxity, Journal of Bone and Joint Surgery, 84 A, pp. 10-16, (2002); Yu B., Garrett W.E., Mechanisms of non-contact ACL injuries, British Journal of Sports Medicine, 41, SUPPL. 1, (2007); Yu B., Lin C.F., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clinical Biomechanics (Bristol, Avon), 21, pp. 297-305, (2006)","N. Cortes; Sports Medicine Assessment, Research and Testing Laboratory, George Mason University, Fairfax, VA 22030, 210 Bull Run Hall, 4400 University Drive, United States; email: ncortes@gmu.edu","","","1466447X","","JSSCE","21086213","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-78649757198" "Grandstrand S.L.; Pfeiffer R.P.; Sabick M.B.; DeBeliso M.; Shea K.G.","Grandstrand, Sara L. (57214044392); Pfeiffer, Ronald P. (7202147125); Sabick, Michelle B. (6602856933); DeBeliso, Mark (55909954200); Shea, Kevin G. (7102870065)","57214044392; 7202147125; 6602856933; 55909954200; 7102870065","The effects of a commercially available warm-up program on landing mechanics in female youth soccer players","2006","Journal of Strength and Conditioning Research","20","2","","331","335","4","55","10.1519/R-17585.1","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33745213528&doi=10.1519%2fR-17585.1&partnerID=40&md5=171d44f2008855581285383eb2c5dadf","Center for Orthopaedic and Biomechanics Research, Boise State University, Boise, ID, United States; Intermountain Orthopaedics, Boise, ID, United States","Grandstrand S.L., Center for Orthopaedic and Biomechanics Research, Boise State University, Boise, ID, United States; Pfeiffer R.P., Center for Orthopaedic and Biomechanics Research, Boise State University, Boise, ID, United States; Sabick M.B., Center for Orthopaedic and Biomechanics Research, Boise State University, Boise, ID, United States; DeBeliso M., Center for Orthopaedic and Biomechanics Research, Boise State University, Boise, ID, United States; Shea K.G., Intermountain Orthopaedics, Boise, ID, United States","The purpose of this study was to examine lower extremity kinematics following implementation of the Sportsmetrics Warm-Up for Injury Prevention and Performance (WIPP) training program. The hypothesis was that there would be no difference in landing mechanics between 2 groups of female youth soccer players (9-11 years of age), with 1 group (Treatment) completing the 8-week-duration (2 days per week) WIPP program and the other serving as a Control group. We recruited 21 female youth soccer players. Treatment (n = 12) and Control (n = 9) groups were established. Using the Sportsmetrics Software for Analysis of Jumping Mechanics, we analyzed lower extremity movement during landing after subjects jumped off a 30.5-cm box and immediately went into a vertical jump. No significant changes in knee separation values were observed in the Treatment group after 8 weeks of WIPP training. The results indicate that 8 weeks of WIPP training did not significantly alter landing strategies. © 2006 National Strength & Conditioning Association.","Anterior cruciate ligament injuries; Knee injury prevention; Youth sports","Biomechanics; Child; Female; Humans; Knee; Motor Skills; Muscle, Skeletal; Physical Education and Training; Proprioception; Soccer; article; biomechanics; child; clinical trial; controlled clinical trial; controlled study; female; human; knee; methodology; motor performance; physical education; physiology; proprioception; skeletal muscle; sport","Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. NCAA data and review of literature, Am. J. Sports Med., 23, pp. 694-701, (1995); Boden B.P., Dean G.S., Feagin J.A., Garrett Jr. W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Briner Jr. W.W., Kacmar A.L., Common injuries in volleyball. Mechanisms of injury, prevention and rehabilitation, Sports Med., 24, pp. 65-71, (1997); Carffa A., Cerulli G., Projetti M., Aisa G., Rizzo A., Prevention of anterior cruciate ligament injuries in soccer. A prospective controlled study of proprioceptive training, Knee Surg. Sports Traumatol. Arthrosc., 4, pp. 19-21, (1996); Chappell J.D., Yu B., Kirkendall D.T., Garrett Jr. W.E., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am. J. Sports Med., 30, pp. 261-267, (2002); Dufek J.S., Bates B.T., Biomechanical factors associated with injury during landing in jump sports, Sports Med., 12, pp. 326-337, (1991); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Med. Sci. Sports Exerc., 37, pp. 124-129, (2005); Gray J., Taunton J.E., McKenzie D.C., Clement D.B., McConkey J.P., Davidson R.G., A survey of injuries to the anterior cruciate ligament of the knee in female basketball players, Int. J. Sports Med., 6, pp. 314-316, (1985); Harmon K.G., Ireland M.L., Gender differences in noncontact anterior cruciate ligament injuries, Clin. Sports Med., 19, pp. 287-302, (2000); Hass C.J., Schick E.A., Tillman M.D., Chow J.W., Brunt D., Cauraugh J.H., Knee biomechanics during landings: Comparison of pre- and postpubescent females, Med. Sci. Sports Exerc., 37, pp. 100-107, (2005); Heidt Jr. R.S., Sweeterman L.M., Carlonas R.L., Traub J.A., Tekulve F.X., Avoidance of soccer injuries with preseason conditioning, Am. J. Sports Med., 28, pp. 659-662, (2000); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes. A prospective study, Am. J. Sports Med., 27, pp. 699-706, (1999); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes. Decreased impact forces and increased hamstring torques, Am. J. Sports Med., 24, pp. 765-773, (1996); Huston L.J., Greenfield M.L., Wojtys E.M., Anterior cruciate ligament injuries in the female athlete. Potential risk factors, Clin. Orthop., 372, pp. 50-63, (2000); Irmischer B.S., Harris C., Pfeiffer R.P., Debeliso M.A., Adams K.J., Shea K.G., Effects of a knee ligament injury prevention exercise program on impact forces in women, J. Strength Cored Res., 18, pp. 703-707, (2004); Kirkendall D.T., Garrett Jr. W.E., The anterior cruciate ligament enigma. Injury mechanisms and prevention, Clin. Orthop., 372, pp. 64-68, (2000); Lindenfeld T.N., Schmitt D.J., Hendy M.P., Mangine R.E., Noyes F.R., Incidence of injury in indoor soccer, Am. J. Sports Med., 22, pp. 364-371, (1994); McNair P.J., Prapavessis H., Callender K., Decreasing landing forces: Effect of instruction, Br. J. Sports Med., 34, pp. 293-296, (2000); Myklebust G., Engebretsen L., Braekken I.H., Skjolberg A., Olsen O.E., Bahr R., Prevention of anterior cruciate ligament injuries in female team handball players: A prospective intervention study over three seasons, Clin. J. Sport Med., 13, pp. 71-78, (2003); Noyes F.R., Barber-Westin S.D., Fleckenstein C., Walsh C., West J., The drop-jump screening test, Am. J. Sports Med., 33, pp. 197-207, (2005); Powell J.W., Barber-Foss K.D., Sex-related injury patterns among selected high school sports, Am. J. Sports Med., 28, pp. 385-391, (2000); Soderman K., Werner S., Pietila T., Engstrom B., Alfredson H., Balance board training: Prevention of traumatic injuries of the lower extremities in female soccer players? A prospective randomized intervention study, Knee Surg. Sports Traumatol. Arthrosc., 8, pp. 356-363, (2000); Zelisko J.A., Noble H.B., Porter M., A comparison of men's and women's professional basketball injuries, Am. J. Sports Med., 10, pp. 297-299, (1982)","R.P. Pfeiffer; Center for Orthopaedic and Biomechanics Research, Boise State University, Boise, ID, United States; email: rpfeiff@boisestate.edu","","","10648011","","","16686560","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-33745213528" "Girard O.; Racinais S.; Kelly L.; Millet G.P.; Brocherie F.","Girard, Olivier (55247058400); Racinais, Sébastien (23036514000); Kelly, Luke (36998434900); Millet, Grégoire P. (56114934100); Brocherie, Franck (8320421900)","55247058400; 23036514000; 36998434900; 56114934100; 8320421900","Repeated sprinting on natural grass impairs vertical stiffness but does not alter plantar loading in soccer players","2011","European Journal of Applied Physiology","111","10","","2547","2555","8","42","10.1007/s00421-011-1884-5","https://www.scopus.com/inward/record.uri?eid=2-s2.0-80053923982&doi=10.1007%2fs00421-011-1884-5&partnerID=40&md5=427adc5d3f99d2d4dfa77e81347a4225","ASPETAR, Research and Education Centre, Qatar Orthopaedic and Sports Medicine Hospital, Doha, PO Box 29222, Qatar; ISSUL, University of Lausanne, Lausanne, Switzerland; Qatar Football Association, Qatar Olympic Committee, Doha, Qatar","Girard O., ASPETAR, Research and Education Centre, Qatar Orthopaedic and Sports Medicine Hospital, Doha, PO Box 29222, Qatar; Racinais S., ASPETAR, Research and Education Centre, Qatar Orthopaedic and Sports Medicine Hospital, Doha, PO Box 29222, Qatar; Kelly L., ASPETAR, Research and Education Centre, Qatar Orthopaedic and Sports Medicine Hospital, Doha, PO Box 29222, Qatar; Millet G.P., ISSUL, University of Lausanne, Lausanne, Switzerland; Brocherie F., ASPETAR, Research and Education Centre, Qatar Orthopaedic and Sports Medicine Hospital, Doha, PO Box 29222, Qatar, Qatar Football Association, Qatar Olympic Committee, Doha, Qatar","This study aimed to determine changes in spring-mass model (SMM) characteristics, plantar pressures, and muscle activity induced by the repetition of sprints in soccer-specific conditions; i.e., on natural grass with soccer shoes. Thirteen soccer players performed 6 × 20 m sprints interspersed with 20 s of passive recovery. Plantar pressure distribution was recorded via an insole pressure recorder device divided into nine areas for analysis. Stride temporal parameters allowed to estimate SMM characteristics. Surface electromyographic activity was monitored for vastus lateralis, rectus femoris, and biceps femoris muscles. Sprint time, contact time, and total stride duration lengthened from the first to the last repetition (+6.7, +12.9, and +9.3%; all P < 0.05), while flight time, swing time, and stride length remained constant. Stride frequency decrease across repetitions approached significance (-6.8%; P = 0.07). No main effect of the sprint number or any significant interaction between sprint number and foot region was found for maximal force, mean force, peak pressure and mean pressure (all P > 0.05). Center of mass vertical displacement increased (P < 0.01) with time, together with unchanged (both P > 0.05) peak vertical force and leg compression. Vertical stiffness decreased (-15.9%; P < 0.05) across trials, whereas leg stiffness changes were not significant (-5.9%; P > 0.05). Changes in root mean square activity of the three tested muscles over sprint repetitions were not significant. Although repeated sprinting on natural grass with players wearing soccer boots impairs their leg-spring behavior (vertical stiffness), there is no substantial concomitant alterations in muscle activation levels or plantar pressure patterns. © 2011 Springer-Verlag.","Electromyographic activity; Foot loading; Repeated sprint ability; Soccer; Spring-mass model characteristics","Acceleration; Adolescent; Biomechanics; Foot; Humans; Leg; Male; Muscle Tonus; Muscle, Skeletal; Periodicity; Play and Playthings; Poaceae; Pressure; Running; Soccer; Weight-Bearing; Young Adult; acceleration; adolescent; adult; article; biomechanics; clinical trial; foot; human; leg; male; muscle tone; periodicity; physiology; Poaceae; pressure; recreation; running; skeletal muscle; sport; weight bearing","Arampatzis A., Bruggemann G.-P., Metzler V., The effect of speed on leg stiffness and joint kinetics in human running, Journal of Biomechanics, 32, 12, pp. 1349-1353, (1999); Bishop D., Girard O., Repeated-sprint ability, Strength and Conditioning Biological Principles and Practical Applications, pp. 223-241, (2010); Buchheit M., Bishop D., Haydar B., Nakamura F.Y., Ahmaidi S., Physiological responses to shuttle repeated-sprint running, Int J Sports Med, 31, 6, pp. 402-409, (2010); Souhaiel M.C., Denis C., Leg power and hopping stiffness: Relationship with sprint running performance, Medicine and Science in Sports and Exercise, 33, 2, pp. 326-333, (2001); Eils E., Streyl M., Linnenbecker S., Thorwesten L., Volker K., Rosenbaum D., Characteristic Plantar Pressure Distribution Patterns during Soccer-Specific Movements, American Journal of Sports Medicine, 32, 1, pp. 140-145, (2004); Farley C.T., Gonzalez O., Leg stiffness and stride frequency in human running, Journal of Biomechanics, 29, 2, pp. 181-186, (1996); Farley C.T., Houdijk H.H.P., Van Strien C., Louie M., Mechanism of leg stiffness adjustment for hopping on surfaces of different stiffnesses, Journal of Applied Physiology, 85, 3, pp. 1044-1055, (1998); Finni T., Kyrolainen H., Avela J., Komi P.V., Maximal but not submaximal performance is reduced by constant-speed 10-km run, Journal of Sports Medicine and Physical Fitness, 43, 4, pp. 411-417, (2003); Ford K.R., Manson N.A., Evans B.J., Myer G.D., Gwin R.C., Heidt Jr. R.S., Hewett T.E., Comparison of in-shoe foot loading patterns on natural grass and synthetic turf, Journal of Science and Medicine in Sport, 9, 6, pp. 433-440, (2006); Fourchet F., Kuitunen S., Girard O., Millet G.-P., Comparaison de la répartition des appuis plantaires entre chaussures d'entraînement et chaussures á pointes chez de jeunes sprinters, Science and Sports, 22, 3-4, pp. 176-178, (2007); Girard O., Eicher F., Fourchet F., Micallef J.P., Millet G.P., Effects of the playing surface on plantar pressures and potential injuries in tennis, British Journal of Sports Medicine, 41, 11, pp. 733-738, (2007); Girard O., Micallef J.-P., Millet G.P., Changes in spring-mass model characteristics during repeated-running sprints, Eur J Appl Physiol, 111, 1, pp. 125-134, (2010); Girard O., Millet G.P., Slawinski J., Racinais S., Micallef J.-P., Changes in leg-spring behavior during a 5000 m self-paced run in differently trained athletes, Sci Sports, 25, 2, pp. 99-102, (2010); Hay J.G., The Biomechanics of Sports Techniques, pp. 396-423, (1994); Hobara H., Inoue K., Gomi K., Sakamoto M., Muraoka T., Iso S., Kanosue K., Continuous change in spring-mass characteristics during a 400 m sprint, J Sci Med Sport, 13, 2, pp. 256-261, (2010); Hobara H., Inoue K., Muraoka T., Omuro K., Sakamoto M., Kanosue K., Leg stiffness adjustment for a range of hopping frequencies in humans, J Biomech, 43, 3, pp. 506-511, (2010); Kelly L.A., Racinais S., Tanner C.M., Grantham J., Chalabi H., Augmented low dye taping changes muscle activation patterns and plantar pressure during treadmill running, J Orthop Sports Phys Ther, 40, 10, pp. 648-655, (2010); Kernozek T.W., Zimmer K.A., Reliability and running speed effects of in-shoe loading measurements during slow treadmill running, Foot Ankle Int, 21, 9, pp. 749-752, (2000); Lieberman D.E., Venkadesan M., Werbel W.A., Daoud A.I., D'Andrea S., Davis I.S., Mang'Eni R.O., Pitsiladis Y., Foot strike patterns and collision forces in habitually barefoot versus shod runners, Nature, 463, 7280, pp. 531-535, (2010); McMahon T.A., Cheng G.C., The mechanics of running: How does stiffness couple with speed?, J Biomech, 23, SUPPL. 1, pp. 65-78, (1990); Mendez-Villanueva A., Hamer P., Bishop D., Fatigue in repeated-sprint exercise is related to muscle power factors and reduced neuromuscular activity, Eur J Appl Physiol, 103, pp. 411-419, (2008); Mero A., Komi P.V., Gregor R.J., Biomechanics of sprint running. A review, Sports Med, 13, 6, pp. 376-392, (1992); Morin J.-B., Dalleau G., Kyrolainen H., Jeannin T., Belli A., A simple method for measuring stiffness during running, Journal of Applied Biomechanics, 21, 2, pp. 167-180, (2005); Morin J.-B., Jeannin T., Chevallier B., Belli A., Spring-mass model characteristics during sprint running: Correlation with performance and fatigue-induced changes, International Journal of Sports Medicine, 27, 2, pp. 158-165, (2006); Morin J.B., Samozino P., Zameziati K., Belli A., Effects of altered stride frequency and contact time on leg-spring behavior in human running, Journal of Biomechanics, 40, 15, pp. 3341-3348, (2007); Muller R., Grimmer S., Blickhan R., Running on uneven ground: Leg adjustments by muscle pre-activation control, Hum Mov Sci, 29, 2, pp. 299-310, (2010); Nummela A.T., Heath K.A., Paavolainen L.M., Lambert M.I., St Clair Gibson A., Rusko H.K., Noakes T.D., Fatigue during a 5-km running time trial, Int J Sports Med, 29, 9, pp. 738-745, (2008); Paavolainen L., Nummela A., Rusko H., Hakkinen K., Neuromuscular characteristics and fatigue during 10 km running, Int J Sports Med, 20, 8, pp. 516-521, (1999); Perrey S., Racinais S., Saimouaa K., Girard O., Neural and muscular adjustments following repeated running sprints, Eur J Appl Physiol, 109, 6, pp. 1027-1036, (2010); Queen R.M., Charnock B.L., Garrett Jr. W.E., Hardaker W.M., Sims E.L., Moorman III C.T., A comparison of cleat types during two football-specific tasks on FieldTurf, British Journal of Sports Medicine, 42, 4, pp. 278-284, (2008); Racinais S., Bishop D., Denis R., Lattier G., Mendez-Villaneuva A., Perrey S., Muscle deoxygenation and neural drive to the muscle during repeated sprint cycling, Medicine and Science in Sports and Exercise, 39, 2, pp. 268-274, (2007); Rozema A., Ulbrecht J.S., Rammer S.E., Cavanagh P.R., In-shoe plantar pressures during activities of daily living: Implications for therapeutic footwear design, Foot and Ankle International, 17, 6, pp. 352-359, (1996); Sims E.L., Hardaker W.M., Queen R.M., Gender differences in plantar loading during three soccer-specific tasks, British Journal of Sports Medicine, 42, 4, pp. 272-277, (2008); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer: An update, Sports Medicine, 35, 6, pp. 501-536, (2005); Tessutti V., Trombini-Souza F., Ribeiro A.P., Nunes A.L., Sacco Ide C., In-shoe plantar pressure distribution during running on natural grass and asphalt in recreational runners, J Sci Med Sport, 13, 1, pp. 151-155, (2010); Weist R., Eils E., Rosenbaum D., The influence of muscle fatigue on electromyogram and plantar pressure patterns as an explanation for the incidence of metatarsal stress fractures, American Journal of Sports Medicine, 32, 8, pp. 1893-1898, (2004); Willson J.D., Kernozek T.W., Plantar loading and cadence alterations with fatigue, Medicine and Science in Sports and Exercise, 31, 12, pp. 1828-1833, (1999); Winter D.A., Biomechanics and Motor Control of Human Movement, pp. 75-102, (1990); Wong P.-L., Chamari K., Chaouachi A., Mao De W., Wisloff U., Hong Y., Difference in plantar pressure between the preferred and non-preferred feet in four soccer-related movements, British Journal of Sports Medicine, 41, 2, pp. 84-92, (2007)","O. Girard; ASPETAR, Research and Education Centre, Qatar Orthopaedic and Sports Medicine Hospital, Doha, PO Box 29222, Qatar; email: oliv.girard@gmail.com","","","14396319","","EJAPF","21369733","English","Eur. J. Appl. Physiol.","Article","Final","","Scopus","2-s2.0-80053923982" "Read P.J.; Oliver J.L.; De Ste Croix M.B.A.; Myer G.D.; Lloyd R.S.","Read, P.J. (55764420600); Oliver, J.L. (7401628051); De Ste Croix, M.B.A. (6603255583); Myer, G.D. (6701852696); Lloyd, R.S. (24460583700)","55764420600; 7401628051; 6603255583; 6701852696; 24460583700","A prospective investigation to evaluate risk factors for lower extremity injury risk in male youth soccer players","2018","Scandinavian Journal of Medicine and Science in Sports","28","3","","1244","1251","7","63","10.1111/sms.13013","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042434018&doi=10.1111%2fsms.13013&partnerID=40&md5=0b96ab8cfe8048efb09a81a251f5039b","Athlete Health and Performance Research Centre, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; Youth Physical Development Centre, School of Sport, Cardiff Metropolitan University, Cardiff, United Kingdom; Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand; School of Sport and Exercise, University of Gloucestershire, Gloucestershire, United Kingdom; Division of Sports Medicine, Cincinnati Children's Hospital, Cincinnati, OH, United States; Department of Pediatrics and Orthopaedic Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH, United States; The Micheli Center for Sports Injury Prevention, Boston, MA, United States; Department of Orthopaedics, University of Pennsylvania, Philadelphia, PA, United States; Centre for Sport Science and Human Performance, Waikato Institute of Technology, Hamilton, New Zealand","Read P.J., Athlete Health and Performance Research Centre, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar, Youth Physical Development Centre, School of Sport, Cardiff Metropolitan University, Cardiff, United Kingdom; Oliver J.L., Youth Physical Development Centre, School of Sport, Cardiff Metropolitan University, Cardiff, United Kingdom, Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand; De Ste Croix M.B.A., School of Sport and Exercise, University of Gloucestershire, Gloucestershire, United Kingdom; Myer G.D., Division of Sports Medicine, Cincinnati Children's Hospital, Cincinnati, OH, United States, Department of Pediatrics and Orthopaedic Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH, United States, The Micheli Center for Sports Injury Prevention, Boston, MA, United States, Department of Orthopaedics, University of Pennsylvania, Philadelphia, PA, United States; Lloyd R.S., Youth Physical Development Centre, School of Sport, Cardiff Metropolitan University, Cardiff, United Kingdom, Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand, Centre for Sport Science and Human Performance, Waikato Institute of Technology, Hamilton, New Zealand","There is an inherent risk of injury in male youth football; however, pertinent risk factors for injury have yet to be examined. This study used a prospective cohort design with 357 elite male youth football players (aged 10-18 years) assessed during the preseason period and then monitored during the season recording all non-contact lower extremity injuries. Screening tests included single leg hop for distance (SLHD); 75% of maximum hop and stick (75%Hop); single leg countermovement jump (SLCMJ); and the tuck jump assessment (TJ). Players were divided into subgroups based on chronological age. SLCMJ peak landing vertical ground reaction force (pVGRF) asymmetry was the most prominent risk factor (U11-U12s, OR 0.90, P =.04; and U15-U16s, OR 0.91, P <.001). Maturational offset (OR 0.58, P =.04), lower right leg SLCMJ pVGRF relative to body weight (OR 0.36, P =.03), and advanced chronological age (OR 3.62, P =.04) were also significantly associated with heightened injury risk in the U13-U14s, U15-U16s, and U18s, respectively. Univariate analyses showed combinations of anthropometric and movement screening risk factors were associated with heightened risk of lower extremity injury; however, there was variability across the different chronological age groups. Greater SLCMJ pVGRF asymmetry, lower right leg SLCMJ pVGRF %BW, later maturation, and advanced chronological age are potential risk factors for injury in elite male youth football players, although the strength of these relationships was often low to moderate. In addition, risk factors are likely to change at different stages of development. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd","football; Injury; screening; youth","Adolescent; Anthropometry; Athletic Injuries; Biomechanical Phenomena; Child; Exercise Test; Humans; Leg Injuries; Male; Prospective Studies; Risk Factors; Soccer; adolescent; anthropometry; biomechanics; child; exercise test; human; injuries; leg injury; male; prospective study; risk factor; soccer; sport injury","Le Gall F., Carling C., Reilly T., Vandewalle H., Chruch J., Rochcongar P., Incidence of injuries in elite French youth football players; a 10-season study, Am J Sports Med, 34, pp. 928-938, (2006); Price R.J., Hawkins R.D., Hulse M.A., Hodson A., The football association and medical research programme: an audit of injuries in academy youth football, Br J Sports Med, 38, pp. 466-471, (2004); Schmikli S.L., de Vries W.R., Inklaar H., Backx F.J., Injury prevention target groups in football: injury characteristics and incidence rates in male junior and senior football players, J Sci Med Sport, 14, pp. 199-203, (2011); Griffin L.Y., Angel J., Albohm M.J., Et al., Non-contact ACL injuries: risk factors and prevention strategies, J Am Acad Orthop Surg, 8, pp. 141-150, (2000); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Hewett T.E., Ford K.R., Hoogenboom B.J., Myer G.D., Understanding and preventing ACL injuries: current biomechanical and epidemiological considerations-update, N Am J Sports Phys Ther, 5, pp. 234-251, (2010); Nilstad A., Andersen T.E., Bahr R., Holme I., Steffen K., Risk factors for lower extremity injuries in elite female football players, Am J Sports Med, 42, pp. 940-948, (2014); Padua D.A., Marshall S.W., Boling M.C., Thigpen C.A., Garrett W.E., Beutler A.I., The landing error scoring system (LESS) is a valid and reliable clinical assessment tool of jump-landing biomechanics, Am J Sports Med, 37, pp. 1996-2002, (2009); Padua D.A., DiStefano L.J., Beutler A.I., de La Motte S.J., DiStefano M.J., Marshall S.W., The landing errors scoring system as a screening tool for an anterior cruciate ligament injury-prevention program in elite-youth football athletes, J Athl Train, 50, pp. 589-595, (2015); Small K., McNaughton L., Greig M., Lovell R., The effects of multidirectional football-specific fatigue on markers of hamstring injury risk, J Sci Med Sport, 13, pp. 120-125, (2010); Junge A., Dvorak J., Influence of definition and data collection on the incidence of injuries in football, Am J Sports Med, 20, pp. 40-46, (2000); Read P.J., Oliver J.L., De Ste Croix M.B.A., Myer G.D., Lloyd R.S., Assessment of injury risk factors in male youth football players, Strength Cond J, 38, pp. 12-21, (2016); Read P.J., Oliver J.L., De Ste Croix M.B.A., Myer G.D., Lloyd R.S., Neuromuscular risk factors for knee and ankle ligament injuries in male youth football players, Sports Med, 46, pp. 1059-1066, (2016); Cloke D., Spencer S., Hodson A., Deehan D., The epidemiology of ankle injuries occurring in English football association academies, Br J Sports Med, 43, pp. 1119-1125, (2009); Volpi P., Pozzoni R., Galli M., The major traumas in youth football, Knee Surg Sports Traumatol Arthrosc, 11, pp. 399-402, (2003); Meeuwisse W.H., Assessing causation in sport injury: a multifactorial model, Clin J Sport Med, 4, pp. 166-170, (1994); Barber S., Frank B., Noyes F., Mangine R., McCloskey J., Hartman W., Quantitative assessment of functional limitations in normal and anterior cruciate ligament-deficient knees, Clin Orthop Relat Res, 255, pp. 204-214, (1990); Lundgren L.E., Tran T.T., Nimphius S., Et al., Development and evaluation of a simple, multi-factorial model based on landing performance to indicate injury risk among surfing athletes, Int J Sports Physiol Perform, 10, pp. 1029-1035, (2015); Arnason A., Sigurdsson S.B., Gudmundsson A., Holme I., Engebretsen L., Bahr R., Risk factors for injury in football, Am J Sports Med, 32, pp. 4-16, (2004); Hagguland M., Walden M., Ekstrand J., Previous injury as a risk factor for injury in elite football: a prospective study over two consecutive seasons, Br J Sports Med, 40, pp. 767-772, (2006); Kucera K.L., Marshall S.W., Kirkendall D.T., Marchak P.M., Garrett W.E., Injury history as a risk factor for incident in youth football, Br J Sports Med, 39, pp. 462-466, (2005); Mirwald R.L., Baxter-Jones A.D.G., Bailey D.A., Beunen G.P., An assessment of maturity from anthropometric measurements, Med Sci Sports Exerc, 34, pp. 689-694, (2002); Read P.J., Oliver J.L., De Ste Croix M.B.A., Myer G.D., Lloyd R.S., The effects of chronological age and stage of maturation on landing kinematics in elite male youth football players, J Athl Train, 24, pp. 221-230, (2006); Myer G.D., Stroube B.W., DiCesare C.A., Et al., Augmented feedback supports skill transfer and reduces high-risk injury landing mechanics: a double-blind, randomized controlled laboratory study, Am J Sports Med, 41, pp. 669-677, (2013); Read P.J., Oliver J.L., De Ste Croix M.B.A., Myer G.D., Lloyd R.S., Reliability of the tuck jump screening assessment in elite male youth football players, J Strength Cond Res, 30, pp. 1510-1516, (2016); Goossens L., Witvrouw E., Vanden Bossche L., De Clercq D., Lower eccentric hamstring strength and single leg hop for distance predict hamstring injury in PETE students, Eur J Sport Sci, 15, pp. 436-442, (2015); Read P.J., Oliver J.L., De Ste Croix M.B.A., Myer G.D., Lloyd R.S., Consistency of field-based measures of neuromuscular control using force plate diagnostics in elite male youth football players, J Strength Cond Res, 12, pp. 3304-3311, (2016); Read P.J., Oliver J.L., Myer G.D., De Ste Croix M.B.A., Lloyd R.S., The effects of maturation on measures of asymmetry during neuromuscular control tests in elite male youth football players, Pediatr Exerc Sci, 36, pp. 1-23, (2017); Myers R.H., Classical and Modern Regression with Applications, (1990); Atkins S.J., Hesketh C., Sinclair J.K., The presence of bilateral imbalance of the lower limbs in elite youth football players of different ages, J Strength Cond Res, 30, pp. 1007-1013, (2016); Daneshjoo A., Rahnama N., Mokhtar A.H., Yusof A., Bilateral and unilateral asymmetries of isokinetic strength and flexibility in male young professional football players, J Hum Kinet, 36, pp. 45-53, (2013); Hewit J., Cronin J., Hume P., Multidirectional leg asymmetry assessment in sport, Strength Cond J, 34, pp. 82-86, (2012); Croisier J.L., Crielaard J.M., Hamstring muscle tears with recurrent complaints: an isokinetic profile, Isokinet Exerc Sci, 8, pp. 175-180, (2000); Goerger B.M., Marshall S.W., Beutler A.I., Blackburn J.T., Wickens J.H., Padua D.A., Asymmetry of lower extremity biomechanics in patients with prior ACL injury: the JUMP-ACL study, (2014); Brophy R., Silvers H., Gonzales T., Mandelbaum B.R., Gender influences: the role of leg dominance in ACL injury among football players, Br J Sports Med, 44, pp. 694-697, (2010); Dingenen B., Malfait B., Nijs S., Et al., Can two-dimensional video analysis during single-leg drop vertical jumps help identify non-contact knee injury risk? A one-year prospective study, Clin Biomech, 30, pp. 781-787, (2015); Blackburn J.T., Padua D.A., Sagittal-plane trunk position, landing forces, and quadriceps electromyographic activity, J Athl Train, 44, pp. 174-179, (2009); Daniel D.M., Stone M.L., Dobson B.E., Fithian D.C., Rossman D.J., Kaufman R.F., Fate of the ACL injured patient: a prospective outcome study, Am J Sports Med, 22, pp. 632-644, (1994); Rumpf M., Cronin J., Injury incidence, body site, and severity in football players aged 6–18 years: implications for injury prevention, Strength Cond J, 34, pp. 20-31, (2012); van der Sluis A., Elferink-Gemser M.T., Coelho-e-Sliva M.J., Nijboer J.A., Brink M.S., Visscher C., Sports injuries aligned to peak height velocity in talented pubertal football players, Int J Sports Med, 35, pp. 351-355, (2014); Philippaerts R.M., Vaeyens R., Janssens M., Et al., The relationship between peak height velocity and physical performance in youth football players, J Sports Sci, 24, pp. 221-230, (2006); van der Sluis A., Elferink-Gemser M.T., Brink M.S., Visscher C., Importance of peak height velocity timing in terms of injuries in talented football players, Int J Sports Med, 36, pp. 327-332, (2015); Le Gall F., Carling C., Reilly T., Biological maturity and injury in elite youth football, Scand J Med Sci Sports, 17, pp. 564-572, (2007); Lloyd R.S., Oliver J.L., The youth physical development model: a new approach to long-term athletic development, Strength Cond J, 34, pp. 61-72, (2012); Engebretsen L., Bahr R., Intrinsic risk factors for hamstring injuries among male football players: a prospective cohort study, Am J Sports Med, 38, pp. 1147-1153, (2010); Newton F., McCall A., Ryan D., Et al., Functional movement screen (FMS™) score does not predict injury in English Premier League youth academy football players, Sci Med Football, 1, pp. 102-106, (2017); Plisky P.J., Rauh M.J., Kaminski T.W., Underwood F.B., Star Excursion Balance Test as a predictor of lower extremity injury in high school basketball players, J Orthop Sports Phys Ther, 36, pp. 911-919, (2006); Gabbe B.J., Finch C.F., Bennell K.L., Wajswelner H., How valid is a self-reported 12 month sports injury history?, Br J Sports Med, 37, pp. 545-547, (2003)","P.J. Read; Athlete Health and Performance Research Centre, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; email: paul.read@aspetar.com","","Blackwell Munksgaard","09057188","","SMSSE","29130575","English","Scand. J. Med. Sci. Sports","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85042434018" "Myer G.D.; Ford K.R.; Khoury J.; Succop P.; Hewett T.E.","Myer, Gregory D. (6701852696); Ford, Kevin R. (7102539333); Khoury, Jane (35427121300); Succop, Paul (7005469665); Hewett, Timothy E. (7005201943)","6701852696; 7102539333; 35427121300; 7005469665; 7005201943","Clinical correlates to laboratory measures for use in non-contact anterior cruciate ligament injury risk prediction algorithm","2010","Clinical Biomechanics","25","7","","693","699","6","65","10.1016/j.clinbiomech.2010.04.016","https://www.scopus.com/inward/record.uri?eid=2-s2.0-77955654875&doi=10.1016%2fj.clinbiomech.2010.04.016&partnerID=40&md5=d462e977802d85e0c74e5e27fc8f6c5e","Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States; Rocky Mountain University of Health Professions, Provo, UT, United States; Department of Pediatrics, University of Cincinnati, United States; Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Department of Environmental Health, University of Cincinnati, Cincinnati, OH, United States; Department of Pediatrics, College of Medicine, University of Cincinnati, United States; Department of Orthopaedic Surgery, College of Medicine, University of Cincinnati, United States; Department of Biomedical Engineering, College of Medicine, University of Cincinnati, United States; Department of Rehabilitation Sciences, College of Medicine, University of Cincinnati, United States","Myer G.D., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Rocky Mountain University of Health Professions, Provo, UT, United States; Ford K.R., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Department of Pediatrics, University of Cincinnati, United States; Khoury J., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Succop P., Department of Environmental Health, University of Cincinnati, Cincinnati, OH, United States; Hewett T.E., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH, United States, Department of Pediatrics, College of Medicine, University of Cincinnati, United States, Department of Orthopaedic Surgery, College of Medicine, University of Cincinnati, United States, Department of Biomedical Engineering, College of Medicine, University of Cincinnati, United States, Department of Rehabilitation Sciences, College of Medicine, University of Cincinnati, United States","Background: Prospective measures of high knee abduction moment during landing identify female athletes at high risk for non-contact anterior cruciate ligament injury. Biomechanical laboratory measurements predict high knee abduction moment landing mechanics with high sensitivity (85%) and specificity (93%). The purpose of this study was to identify correlates to laboratory-based predictors of high knee abduction moment for use in a clinic-based anterior cruciate ligament injury risk prediction algorithm. The hypothesis was that clinically obtainable correlates derived from the highly predictive laboratory-based models would demonstrate high accuracy to determine high knee abduction moment status. Methods: Female basketball and soccer players (N = 744) were tested for anthropometrics, strength and landing biomechanics. Pearson correlation was used to identify clinically feasible correlates and logistic regression to obtain optimal models for high knee abduction moment prediction. Findings: Clinical correlates to laboratory-based measures were identified and predicted high knee abduction moment status with 73% sensitivity and 70% specificity. The clinic-based prediction algorithm, including (Odds Ratio: 95% confidence interval) knee valgus motion (1.43:1.30-1.59 cm), knee flexion range of motion (0.98:0.96-1.01°), body mass (1.04:1.02-1.06 kg), tibia length (1.38:1.25-1.52 cm) and quadriceps to hamstring ratio (1.70:1.06-2.70) predicted high knee abduction moment status with C statistic 0.81. Interpretation: The combined correlates of increased knee valgus motion, knee flexion range of motion, body mass, tibia length and quadriceps to hamstrings ratio predict high knee abduction moment status in female athletes with high sensitivity and specificity. Clinical Relevance: Utilization of clinically obtainable correlates with the prediction algorithm facilitates high non-contact anterior cruciate ligament injury risk athletes' entry into appropriate interventions with the greatest potential to prevent injury. © 2010 Elsevier Ltd. All rights reserved.","ACL injury prevention; ACL injury risk factors; Assessment tools; Biomechanics correlated to increased ACL injury risk; Clinician friendly; Targeted neuromuscular training","Adolescent; Adult; Algorithms; Anterior Cruciate Ligament; Basketball; Computer Simulation; Female; Humans; Middle Aged; Models, Biological; Proportional Hazards Models; Risk Assessment; Risk Factors; Soccer; Young Adult; Algorithms; Biomechanics; Biophysics; Forecasting; Health risks; Laboratories; Landing; Ligaments; Assessment tool; Clinician friendly; Injury prevention; Injury risk; Targeted neuromuscular training; abduction; adolescent; algorithm; anterior cruciate ligament injury; anthropometric parameters; article; athlete; biomechanics; body mass; correlation coefficient; diagnosis, measurement and analysis; female; hamstring; human; knee function; logistic regression analysis; major clinical study; non contact anterior cruciate ligament injury; predictor variable; priority journal; quadriceps femoris muscle; range of motion; risk; sensitivity and specificity; tibia; valgus knee; Physiological models","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A 13-year review, Am. J. Sports Med., 33, pp. 524-530, (2005); Andriacchi T.P., Natarajan R.N., Hurwitz D.E., Musculoskeletal dynamics, locomotion, and clinical applications, Basic Orthopaedic Biomechanics, (1997); Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. NCAA data and review of literature, Am. J. Sports Med., 23, pp. 694-701, (1995); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am. J. Sports Med., 30, pp. 261-267, (2002); Cole G.K., Nigg B.M., Ronsky J.L., Yeadon M.R., Application of the joint coordinate system to three-dimensional joint attitude and movement representation: A standardization proposal, J. Biomech. Eng., 115, pp. 344-349, (1993); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med. Sci. Sports Exerc., 35, pp. 1745-1750, (2003); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Med. Sci. Sports, 37, pp. 124-129, (2005); Ford K.R., Myer G.D., Smith R.L., Vianello R.M., Seiwert S.L., Hewett T.E., A comparison of dynamic coronal plane excursion between matched male and female athletes when performing single leg landings, Clin. Biomech., 21, pp. 33-40, (2006); Ford K.R., Myer G.D., Hewett T.E., Reliability of landing 3D motion analysis: Implications for longitudinal analyses, Med. Sci. Sports Exerc., 39, pp. 2021-2028, (2007); Grindstaff T.L., Hammill R.R., Tuzson A.E., Hertel J., Neuromuscular control training programs and noncontact anterior cruciate ligament injury rates in female athletes: A numbers-needed-to-treat analysis, J. Athl. Train., 41, pp. 450-456, (2006); Harrell F.E., Regression Modeling Statistics, (2001); Harrell F.E., Regression Modeling Strategies with Application to Linear Models, Logistic Regression, and Survival Analysis, (2002); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes. Decreased impact forces and increased hamstring torques, Am. J. Sports Med., 24, pp. 765-773, (1996); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J. Bone Joint Surg. Am., 86, pp. 1601-1608, (2004); Hewett T.E., Myer G.D., Ford K.R., Heidt Jr.R.S., Colosimo A.J., McLean S.G., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am. J. Sports Med., 33, pp. 492-501, (2005); Hewett T.E., Ford K.R., Myer G.D., Anterior cruciate ligament injuries in female athletes: Part 2, a meta-analysis of neuromuscular interventions aimed at injury prevention, Am. J. Sports Med., 34, pp. 490-498, (2006); Hewett T.E., Ford K.R., Myer G.D., Wanstrath K., Scheper M., Gender differences in hip adduction motion and torque during a single leg agility maneuver, J. Orthop. Res., 24, pp. 416-421, (2006); Kernozek T.W., Torry M.R., H H.V., Cowley H., Tanner S., Gender differences in frontal and sagittal plane biomechanics during drop landings, Med. Sci. Sports Exerc., 37, pp. 1003-1012, (2005); Knaus W.A., Harrell F.E., Fisher Jr.C.J., Wagner D.P., Opal S.M., Sadoff J.C., Et al., The clinical evaluation of new drugs for sepsis. A prospective study design based on survival analysis, Jama, 270, pp. 1233-1241, (1993); Krosshaug T., Nakamae A., Boden B.P., Engebretsen L., Smith G., Slauterbeck J.R., Et al., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, Am. J. Sports Med., 35, pp. 359-367, (2007); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin. Biomech., 16, pp. 438-445, (2001); Malone T.R., Hardaker W.T., Garrett W.E., Feagin J.A., Bassett F.H., Relationship of gender to anterior cruciate ligament injuries in intercollegiate basketball players, J. South. Orthop. Assoc., 2, pp. 36-39, (1993); McLean S.G., Huang X., Su A., Van Den Bogert A.J., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clin. Biomech., 19, pp. 828-838, (2004); McLean S.G., Lipfert S.W., Van Den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med. Sci. Sports Exerc., 36, pp. 1008-1016, (2004); Meyer E.G., Villwock M.R., Haut R.C., Osteochondral microdamage from valgus bending of the human knee, Clin. Biomech., 24, 7, pp. 577-582, (2009); Myer G.D., Ford K.R., Divine J.G., Hewett T.E., Specialized dynamic neuromuscular training can be utilized to induce neuromuscular spurt in female athletes, Med. Sci. Sports Exerc., 36, pp. 343-344, (2004); Myer G.D., Ford K.R., Palumbo J.P., Hewett T.E., Neuromuscular training improves performance and lower-extremity biomechanics in female athletes, J. Strength Cond. Res., 19, pp. 51-60, (2005); Myer G.D., Ford K.R., Brent J.L., Hewett T.E., The effects of plyometric versus dynamic balance training on power, balance and landing force in female athletes, J. Strength Cond. Res., 20, pp. 345-353, (2006); Myer G.D., Ford K.R., McLean S.G., Hewett T.E., The effects of plyometric versus dynamic stabilization and balance training on lower extremity biomechanics, Am. J. Sports Med., 34, pp. 490-498, (2006); Myer G.D., Ford K.R., Brent J.L., Hewett T.E., Differential neuromuscular training effects on ACL injury risk factors in ""high-risk"" versus ""low-risk"" athletes, BMC Musculoskelet. Disord., 8, pp. 1-7, (2007); Myer G.D., Ford K.R., Barber Foss K.D., Liu C., Nick T.G., Hewett T.E., The relationship of hamstrings and quadriceps strength to anterior cruciate ligament injury in female athletes, Clin. J. Sport Med., 19, pp. 3-8, (2009); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Biomechanics laboratory-based prediction algorithm to identify female athletes with high knee loads that increase risk of ACL injury, Br. J. Sports Med.; Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Development and validation of a clinic based prediction tool to identify high ACL injury risk female athletes, Am. J. Sports Med.; Myklebust G., Bahr R., Return to play guidelines after anterior cruciate ligament surgery, Br. J. Sports Med., 39, pp. 127-131, (2005); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am. J. Sports Med., 32, pp. 1002-1012, (2004); Padua D.A., Marshall S.W., Beutler A.I., Garrett W.E., Prospective cohort study of biomechanical risk factors of ACL injury: The JUMP-ACL Study, American Orthopaedic Society of Sports Medicine Annual Meeting. Keystone, CO, (2009); Pappas E., Hagins M., Sheikhzadeh A., Nordin M., Rose D., Biomechanical differences between unilateral and bilateral landings from a jump: Gender differences, Clin. J. Sport Med., 17, pp. 263-268, (2007); Paterno M.V., Myer G.D., Ford K.R., Hewett T.E., Neuromuscular training improves single-limb stability in young female athletes, J. Orthop. Sports Phys. Ther., 34, pp. 305-317, (2004); Uhorchak J.M., Scoville C.R., Williams G.N., Arciero R.A., St Pierre P., Taylor D.C., Risk factors associated with noncontact injury of the anterior cruciate ligament: A prospective four-year evaluation of 859 West Point cadets, Am. J. Sports Med., 31, pp. 831-842, (2003); Winter D.A., Biomechanics and Motor Control of Human Movement, pp. 91-95, (1990); Zeller B.L., McCrory J.L., Kibler W.B., Uhl T.L., Differences in kinematics and electromyographic activity between men and women during the single-legged squat, Am. J. Sports Med., 31, pp. 449-456, (2003)","G. D. Myer; Cincinnati Children's Hospital, MLC 10001, Cincinnati, OH 45229, 3333 Burnet Avenue, United States; email: greg.myer@chmcc.org","","","02680033","","CLBIE","20554101","English","Clin. Biomech.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-77955654875" "Sterzing T.; Hennig E.M.","Sterzing, Thorsten (23986270100); Hennig, Ewald M. (57196699689)","23986270100; 57196699689","The influence of soccer shoes on kicking velocity in full-instep kicks","2008","Exercise and Sport Sciences Reviews","36","2","","91","97","6","57","10.1097/JES.0b013e318168ece7","https://www.scopus.com/inward/record.uri?eid=2-s2.0-41149152982&doi=10.1097%2fJES.0b013e318168ece7&partnerID=40&md5=e426521efa0482dfb9bafe9a9d3806a1","Department of Human Locomotion, Institute of Sports Science, Chemnitz University of Technology, Chemnitz, Germany; Biomechanics Laboratory, Sports and Movement Sciences, University of Duisburg-Essen, Essen, Germany; Department of Human Locomotion, Institute of Sport Science, Chemnitz University of Technology, 09107 Chemnitz, Germany","Sterzing T., Department of Human Locomotion, Institute of Sports Science, Chemnitz University of Technology, Chemnitz, Germany, Department of Human Locomotion, Institute of Sport Science, Chemnitz University of Technology, 09107 Chemnitz, Germany; Hennig E.M., Biomechanics Laboratory, Sports and Movement Sciences, University of Duisburg-Essen, Essen, Germany","Soccer shoes enhance the traction required by the stance leg but decrease the quality of the ball contact during full-instep kicking. Shoe features that influence ball velocity include traction, foot protection, foot rigidity, and toe box height. Upper material and general comfort potentially affect ball velocity. In contrast, shoe weight and outsole stiffness do not influence ball velocity. ©2008The Amercian College of Sports Medicine.","Ball velocity; Full-instep kicking; Kicking leg; Shoe features; Stance leg","Biomechanics; Equipment Design; Humans; Leg; Muscle, Skeletal; Shoes; Soccer; article; clothing; friction; human; kicking velocity; methodology; movement (physiology); priority journal; protection; rigidity; soccer shoe; sport; standing; velocity; weight","Amos M., Morag E., Effect of shoe mass on soccer kicking velocity. Proceedings 4, World Congress of Biomechanics, (2002); Anjos dos L.A., Adrian M.J., Ground reaction forces during kicks performed by skilled and unskilled subjects, Rev. Bras. Cienc. Esporte, 8, pp. 129-133, (1986); Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, J. Sports Sci, 24, pp. 951-960, (2006); Asai T., Carre M.J., Akatsuka T., Haake S.J., The curve kick of a football I: Impact with the foot, Sports Engin, 5, pp. 183-192, (2002); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Barfield W.R., Effects of selected kinematic and kinetic variables on instep kicking with dominant and nondominant limbs, J. Hum. Mov. Stud, 29, pp. 251-272, (1995); Barfield W.R., The biomechanics of kicking in soccer, Clin. Sports Med, 17, pp. 711-278, (1998); Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, J. Sports Sci. Med, 1, pp. 72-79, (2002); Bisanz G., Gerisch G., Fussball, (1999); Bull Andersen T., Dorge H.C., Thomsen F.I., Collisions in soccer kicking, Sports Engin, 2, pp. 121-125, (1999); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the nonpreferred leg, J. Sports Sci, 20, pp. 293-299, (2002); Hennig E.M., Zulbeck O., The influence of soccer boot construction on ball velocity and shock to the body. Proceedings 4, Symposium on Footwear Biomechanics, Canmore, (1999); Lees A., Nolan L., The biomechanics of soccer: A review, J. Sports Sci, 16, pp. 211-234, (1998); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med. Sci. Sports Exerc, 30, pp. 917-927, (1998); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 441-448, (1988); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med. Sci. Sports Exerc, 34, pp. 2028-2036, (2002); Opavsky P., An investigation of linear and angular kinematics of the leg during two types of soccer kick, Science and Football, pp. 456-459, (1988); Plagenhoef S., Pattern of Human Motion - A Cinematographic Analysis, (1971); Shinkai H., Nunome H., Ikegami I., Masanori I., Ball-foot interaction in impact phase of instep soccer kick. Proceedings 6, World Congress on Science and Football, (2007); Sterzing T., Kroiher J., Hennig E.M., Kicking Velocity: Barefoot kicking superior to shod kicking? Proceedings 6, World Congress of Science and Football, (2007); Sterzing T., Hennig E.M., The influence of stance leg traction properties on kicking performance and perception parameters, Proceedings 8. Footwear Biomechanics Symposium, (2007); Sterzing T., Hennig E.M., The influence of friction properties of shoe upper materials on kicking velocity in soccer, Proceedings 21. Congress of the International Society of Biomechanics, (2007); Sterzing T., The influence of soccer shoes on shooting velocity during full-instep kicking, (2007); Togari H., Studies on the velocity of kicked ball and its relation to kicking form, (1970); Tsaousidis N., Zatsiorsky V., Two types of ball-effector interaction and their relative contribution to soccer kicking, Hum. Mov. Sci, 15, pp. 861-876, (1996)","T. Sterzing; Department of Human Locomotion, Institute of Sport Science, Chemnitz University of Technology, 09107 Chemnitz, Germany; email: thorsten.sterzing@phil.tu-chemnitz.de","","","00916331","","ESSRB","18362691","English","Exercise Sport Sci. Rev.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-41149152982" "Wong P.-L.; Chamari K.; Chaouachi A.; De W.M.; Wisløff U.; Hong Y.","Wong, Pui-Lam (35115670400); Chamari, Karim (6602474344); Chaouachi, Anis (58586134000); De, Wei Mao (15922069900); Wisløff, Ulrik (57204822365); Hong, Youlian (7403392792)","35115670400; 6602474344; 58586134000; 15922069900; 57204822365; 7403392792","Difference in plantar pressure between the preferred and non-preferred feet in four soccer-related movements","2007","British Journal of Sports Medicine","41","2","","84","92","8","61","10.1136/bjsm.2006.030908","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33847149592&doi=10.1136%2fbjsm.2006.030908&partnerID=40&md5=293a6ad1628669cc2d815112d85cf267","Department of Sports Science and Physical Education, Chinese University of Hong Kong, 852 Hong Kong, Hong Kong; Department of Sports Science and Physical Education, Chinese University of Hong Kong, Hong Kong, Hong Kong; Unité de Recherche - Evaluation, Sport, Santé, National Centre of Medicine and Science in Sports (CNMSS), El Menzah, Tunisia; Shandong Institute of Physical Education and Sports, Jinan, Shandong, China; Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway","Wong P.-L., Department of Sports Science and Physical Education, Chinese University of Hong Kong, 852 Hong Kong, Hong Kong, Department of Sports Science and Physical Education, Chinese University of Hong Kong, Hong Kong, Hong Kong; Chamari K., Unité de Recherche - Evaluation, Sport, Santé, National Centre of Medicine and Science in Sports (CNMSS), El Menzah, Tunisia; Chaouachi A., Unité de Recherche - Evaluation, Sport, Santé, National Centre of Medicine and Science in Sports (CNMSS), El Menzah, Tunisia; De W.M., Shandong Institute of Physical Education and Sports, Jinan, Shandong, China; Wisløff U., Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway; Hong Y., Department of Sports Science and Physical Education, Chinese University of Hong Kong, Hong Kong, Hong Kong","Objective and participants: The present study measured the difference in plantar pressure between the preferred and non-preferred foot in four soccer-related movements in 15 male university soccer players (mean (SD) age 20.9 (1.3) years, mean (SD) height 173 (4) cm and mean (SD) weight 61.7 (3.6) kg). Design: To record plantar pressure distribution, players randomly wore three types of soccer shoes (classical 6-stud and 12-stud, and specially designed 12-stud) embedded with an insole pressure recorder device with 99 sensors, divided into 10 areas for analysis. Plantar pressure was recorded in five successful trials in each of the four soccer-related movements: running (at 3.3 m/s), sideward cutting, 45° cutting and landing from a vertical jump. Results: Plantar pressures of the preferred and non-preferred foot were different in 115 of 120 comparisons. The overall plantar pressure of the preferred foot was higher than that of the non-preferred foot. Specifically, in each of the four movements, higher pressure was found in the preferred foot during the take-off phase, whereas this was found in the non-preferred foot during the landing phase. This would suggest a tendency of the preferred foot for higher motion force and of the non-preferred foot for a greater role in body stabilisation. Conclusions: The data indicate that the preferred and non-preferred foot should be treated independently with regard to strength/power training to avoid unnecessary injuries. Different shoes/insoles and different muscular strengthening programmes are thus suggested for each of the soccer player's feet.","","Adult; Biomechanics; Foot; Foot Injuries; Humans; Male; Pressure; Shoes; Soccer; Sports Equipment; adult; article; body height; body movement; body weight; controlled study; demography; human; human experiment; jumping; leg movement; male; medical instrumentation; plantaris muscle; running; sensor; shoe; sport","Football Worldwide 2000: Official FIFA survey, (2002); Kramer J.F., Balsor B.E., Lower extremity preference and knee extensor torques in intercollegiate soccer players, Can J Sport Sci, 15, pp. 180-184, (1990); Rahnama N., Lees A., Bambaecichi E., A comparison of muscle strength and flexibility between the preferred and non-preferred leg in English soccer players, Ergonomics, 48, pp. 1568-1575, (2005); Dorge H.C., Anderson T.B., Sorensen H., Et al., Biomechanicai differences in soccer kicking with the preferred and the non-preferred leg, J Sport Sci, 20, pp. 293-299, (2002); McLean B.D., Tumilty D.M., Left-right asymmetry in two types of soccer kick, Br J Sports Med, 27, pp. 260-262, (1993); Nunome H., Ikegami Y., Kozakai R., Et al., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, J Sport Sci, 24, pp. 529-541, (2006); Kearns C.F., Isokawa M., Abe T., Architectural characteristics of dominant leg muscles in junior soccer players, Eur J Appl Physiol, 85, pp. 240-243, (2001); Soderman K., Alfredson H., Pietila T., Et al., Risk factors for leg injuries in female soccer players: A prospective investigation during one out-door season, Knee Surg Sports Traumatol Arthrosc, 9, pp. 313-321, (2001); Niemuth P.E., Johnson R.J., Myers M.J., Et al., Hip muscle weakness and overuse injuries in recreational runners, Clin J Sport Med, 15, pp. 14-21, (2005); Wang H.K., Cochrane T., Mobility impairment, muscle imbalance, muscle weakness, scapular asymmetry and shoulder injury in elite volleyball athletes, J Sports Med Phys Fitness, 41, pp. 403-410, (2001); Olney S.J., Griffin M.P., McBride I.D., Multivariate examination of data from gait analysis of persons with stroke, Phys Ther, 78, pp. 814-828, (1998); Chao E.Y., Laughman R.K., Schneider E., Et al., Normative data of knee joint motion and ground reaction forces in adult level walking, J Biomech, 16, pp. 219-233, (1983); Robinson R.O., Herzog W., Nigg B.M., Use of force platform variables to quantify the effects of chiropractic manipulation on gait symmetry, J Manipulative Physiol Ther, 10, pp. 172-176, (1987); Herzog W., Nigg B.M., Read L.J., Et al., Asymmetries in ground reaction force patterns in normal human gait, Med Sci Sports Exerc, 21, pp. 110-114, (1989); Draper E.R., Cable J.M., Sanchez-Ballester J., Et al., Improvement in function after valgus bracing of the knee. An analysis of gait symmetry, J Bone Joint Surg Br, 82, pp. 1001-1005, (2000); Karamanidis K., Arampatzis A., Bruggemann G.P., Symmetry and reproducibility of kinematic parameters during various running techniques, Med Sci Sports Exerc, 35, pp. 1009-1016, (2003); Lees A., Kewley P., The demands on the soccer boot, Science and football II, pp. 335-340, (1993); Yamanaka K., Nishikawa T., Yamanaka T., Et al., An analysis of the playing patterns of the Japan national team in the 1998 World Cup for soccer, Science and football IV, pp. 101-105, (2002); Reilly T., Thomas V., A motion analysis of work-rate in different positional roles in professional football match-play, J Hum Mov Stud, 2, pp. 87-97, (1976); Withers R.T., Maricic Z., Wasilewski S., Et al., Match analyses of Australian professional soccer players, J Hum Mov Stud, 8, pp. 159-176, (1982); Hurkmans H.L.P., Bussmann J.B.J., Benda E., Et al., Accuracy and repeatability of the Pedar Mobile system in long-term vertical force measurements, Gait Posture, 23, pp. 118-125, (2006); Hurkmans H.L.P., Bussmann J.B.J., Selles R.W., Et al., Validity of the Pedar Mobile system for vertical force measurement during a seven-hour period, J Biomech, 39, pp. 110-118, (2006); Bland J.M., Altman D.G., Multiple significance tests: The Bonferroni method, BMJ, 310, (1995); Clarke T.E., Frederick E.C., Hamill C., The study of rearfoot movement in running, Sport shoes and playing surfaces, pp. 166-189, (1984); Eils E., Streyl M., Linnenbecker S., Et al., Characteristic plantar pressure distribution patterns during soccer-specific movements, Am J Sports Med, 32, pp. 140-145, (2004); Stolen T., Chamari K., Castagna C., Et al., Physiology of soccer: An update, Sports Med, 35, pp. 501-536, (2005); Robbins S., Gouw G.J., McClaran J., Shoe sole thickness and hardness influence balance in older men, J Am Geriatr Soc, 40, pp. 1089-1094, (1992); Grace T.G., Sweetser E.R., Nelson M.A., Isokinetic muscle imbalance and knee-joint injuries, J Bone Joint Surg, 66, pp. 734-739, (1984); Knapik J.J., Baumann C.L., Jones B.H., Et al., Pre-season strength and flexibility imbalances associated with athletic injuries in female collegiate athletes, Am J Sports Med, 19, pp. 76-81, (1991)","P.-L. Wong; Department of Sports Science and Physical Education, Chinese University of Hong Kong, 852 Hong Kong, Hong Kong; email: delwong@alumni.cuhk.net","","","03063674","","BJSMD","17138639","English","Br. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-33847149592" "Rebelo A.N.C.; Silva P.; Rago V.; Barreira D.; Krustrup P.","Rebelo, António Natal Campos (24329883500); Silva, Pedro (56871356000); Rago, Vincenzo (56239838500); Barreira, Daniel (55934716300); Krustrup, Peter (6603882135)","24329883500; 56871356000; 56239838500; 55934716300; 6603882135","Differences in strength and speed demands between 4v4 and 8v8 small-sided football games","2016","Journal of Sports Sciences","34","24","","2246","2254","8","64","10.1080/02640414.2016.1194527","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84973596856&doi=10.1080%2f02640414.2016.1194527&partnerID=40&md5=0ba2b2ba151437992f8f3e2a872f7792","Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sports, University of Porto, Porto, Portugal; FC Zenit, St. Petersburg, Russian Federation; Department of Nutrition, Exercise and Sports, Section of Human Physiology, University of Copenhagen, Copenhagen, Denmark; Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom","Rebelo A.N.C., Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sports, University of Porto, Porto, Portugal; Silva P., Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sports, University of Porto, Porto, Portugal, FC Zenit, St. Petersburg, Russian Federation; Rago V., Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sports, University of Porto, Porto, Portugal; Barreira D., Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sports, University of Porto, Porto, Portugal; Krustrup P., Department of Nutrition, Exercise and Sports, Section of Human Physiology, University of Copenhagen, Copenhagen, Denmark, Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom","The aims of this study were (i) to characterise the acceleration demands of two different formats of small-sided game (SSG), i.e., 4v4 + goalkeepers (4v4 + GK) and 8v8 + goalkeepers (8v8 + GK); (ii) to analyse the correlation between performance in power-based tests and acceleration-based physical loading during the two different SSG formats and (iii) to analyse the neuromuscular-induced fatigue. Eighteen adult male footballers participated in the study (20.7 ± 1.0 years, 178 ± 5 cm and 71.4 ± 2.1 kg). Baseline measurements were obtained from countermovement jumps, 15 s repeated jumps and 5 and 15 m sprints. A total of 36 min was analysed for each SSG (4v4 + GK: two sets of 3 × 6 min, and 8v8 + GK: 2 × 18 min). Heart rate, blood lactate, perceived exertion and movement pattern (GPS) were analysed. Distances covered by very-high-intensity activities and very-high-speed running were lower in 4v4 + GK than in 8v8 + GK (effect sizes (ES) = −0.69 ± 0.67 and −1.04 ± 0.67, respectively; very likely), while accelerations and decelerations were higher in 4v4 + GK than in 8v8 + GK (ES = 1.13–1.52; almost certainly). Blood lactate concentrations were higher (ES = 1.40 ± 0.58; almost certainly) and players perceived themselves to be more tired (ES = 0.80–2.31; almost certainly) after 4v4 + GK than after 8v8 + GK. Sprint ability in 5 and 15 m tests decreased (ES = 0.87 ± 0.58 and 0.89 ± 0.58, respectively; almost certainly) only after 4v4 + GK. This SSG format appeared more demanding in relation to repetitions and fatigue development of muscle power-based actions than 8v8 + GK. It may therefore be logical to use the former type of SSG to target development of power-related football actions. © 2016 Informa UK Limited, trading as Taylor & Francis Group.","acceleration demands; fatigue; technical skills; Time-motion","Acceleration; Adult; Athletic Performance; Biomechanical Phenomena; Competitive Behavior; Fatigue; Football; Heart Rate; Humans; Lactic Acid; Male; Movement; Muscle Strength; Perception; Physical Endurance; Physical Exertion; Running; Soccer; Young Adult; lactic acid; acceleration; adult; athletic performance; biomechanics; blood; comparative study; competitive behavior; endurance; exercise; fatigue; football; heart rate; human; male; movement (physiology); muscle strength; perception; physiology; running; soccer; young adult","Aguiar M., Botelho G., Lago C., Macas V., Sampaio J., A review on the effect of soccer small-sided games, Journal of Human Kinetics, 33, pp. 103-113, (2012); Andersson H., Ekblom B., Krustrup P., Elite football on artificial turf versus natural grass: Movement patterns, technical standards, and player impressions, Journal of Sports Sciences, 26, 2, pp. 113-122, (2008); Aroso J., Rebelo A.N., Gomes-Pereira J., Physiological impact of selected game-related exercises, Journal of Sports Sciences, 22, 6, pp. 521-566, (2004); Aslan A., Cardiovascular responses, perceived exertion and technical actions during small-sided recreational soccer: Effects of pitch size and number of players, Journal of Human Kinetics, 38, pp. 95-105, (2013); Batterham A., Hopkins G., Making meaningful inferences about magnitudes, International Journal of Sports Physiology and Performance, 1, 1, pp. 50-57, (2006); Baldari C., Bonavolonta V., Emerenziani G.P., Gallotta M.C., Silva A.J., Guidetti L., Accuracy, reliability, linearity of accutrend and lactate pro versus EBIO plus analyzer, European Journal of Applied Physiology, 107, 1, pp. 105-111, (2009); Bosco C., Luhtanen P., Komi P.V., A simple method for measurement of mechanical power in jumping, European Journal of Applied Physiology and Occupational Physiology, 50, 2, pp. 273-282, (1983); Buchheit M., Al Haddad H., Simpson B., Pallazi D., Bourdon P., DiSalvo V., Mendez-Villanueva A., Monitoring accelerations with GPS infootball: Time to slow down?, International Journal of Sports Physiology and Performance, 9, 3, pp. 442-445, (2012); Buchheit M., Mendez-Villanueva A., Simpson B.M., Bourdon P.C., Match running performance and fitness in youth soccer, International Journal of Sports Medicine, 31, 11, pp. 818-825, (2010); Casamichana D., Castellano J., Time-motion, heart rate, perceptual and motor behaviour demands in small-sided soccer games, Journal of Sports Sciences, 28, 14, pp. 1615-1623, (2010); Casamichana D., Castellano J., Dellal A., Influence of different training regimes on physical and physiological demands during small-sided soccer games: Continuous vs. intermittent format, Journal of Strength and Conditioning Research, 27, 3, pp. 690-697, (2013); Castellano J., Casamichana D., Dellal A., Influence of game format and number of players on heart rate responses and physical demands in small-sided soccer games, Journal of Strength and Conditioning Research, 27, 5, pp. 1295-1303, (2013); Chaouachi A., Chtara M., Hammami R., Chtara H., Turki O., Castagna C., Multidirectional sprints and small-sided games training effect on agility and change of direction abilities in youth soccer, Journal of Strength and Conditioning Research, 28, 11, pp. 3121-3127, (2014); Clarkson P.M., Hubal M.J., Exercise-induced muscle damage in humans, American Journal of Physical Medicine & Rehabilitation, 81, pp. S52-S69, (2002); Clemente F.M., Wong del P., Martins F.M., Mendes R.S., Acute effects of the number of players and scoring method on physiological, physical, and technical performance in small-sided soccer games, Research in Sports Medicine, 22, 4, pp. 380-397, (2014); Cohen J., A cofficient of agreement for nominal scales, Education and Psychological Measurement, 20, pp. 37-46, (1960); Cohen J., A power primer, Psychological Bulletin, 112, pp. 155-159, (1992); Dellal A., Drust B., Lago-Penas C., Variation of activity demands in small-sided soccer games, International Journal of Sports Medicine, 33, 5, pp. 370-375, (2012); Dellal A., Varliette C., Owen A., Chirico E.N., Pialoux V., Small-sided games versus interval training in amateur soccer players: Effects on the aerobic capacity and the ability to perform intermittent exercises with changes of direction, Journal of Strength and Conditioning Research, 26, 10, pp. 2712-2720, (2012); Faude O., Steffen A., Kellmann M., Meyer T., The effect of short-term interval training during the competitive season on physical fitness and signs of fatigue: A crossover trial in high-level youth football players, International Journal of Sports Physiology and Performance, 9, 6, pp. 936-944, (2014); Gaudino P., Alberti G., Iaia F.M., Estimated metabolic and mechanical demands during different small-sided games in elite soccer players, Human Movement Science, 36, pp. 123-133, (2014); Gaudino P., Iaia F.M., Alberti G., Hawkins R.D., Strudwick A.J., Gregson W., Systematic bias between running speed and metabolic power data in elite soccer players: Influence of drill type, International Journal of Sports Medicine, 35, 6, pp. 489-493, (2014); Halouani J., Chtourou H., Gabbett T., Chaouachi A., Chamari K., Small-sided games in team sports training: A brief review, Journal of Strength and Conditioning Research, 28, 12, pp. 3594-3618, (2014); Hill-Haas S.V., Coutts A.J., Dawson B.T., Rowsell G.J., Time-motion characteristics and physiological responses of small-sided games in elite youth players: The influence of player number and rule changes, Journal of Strength and Conditioning Research, 24, 8, pp. 2149-2156, (2010); Hill-Haas S.V., Coutts A., Rowsell G., Dawson B., Variability of acute physiological responses and performance profiles of youth soccer players in small-sided games, Journal of Science and Medicine in Sport, 11, 5, pp. 487-490, (2008); Hill-Haas S.V., Coutts A.J., Rowsell G.J., Dawson B.T., Generic versus small-sided game training in soccer, International Journal of Sports Medicine, 30, 9, pp. 636-642, (2009); Hill-Haas S.V., Dawson B., Impellizzeri F.M., Coutts A.J., Physiology of small-sided games training in football: A systematic review, Sports Medicine, 41, 3, pp. 199-220, (2011); Hill-Haas S.V., Rowsell G.J., Dawson B.T., Coutts A.J., Acute physiological responses and time-motion characteristics of two small-sided training regimes in youth soccer players, Journal of Strength and Conditioning Research, 23, 1, pp. 111-115, (2009); Hopkins W., A spreadsheet for deriving a confidence interval, mechanistic inference and clinical inference from a P value, Sportscience, 11, pp. 16-21, (2007); Hopkins W., Marshall S., Batterham A., Hanin J., Progressive statistics for studies in sports medicine and exercise science, Medicine and Science in Sports and Exercise, 41, 1, pp. 3-13, (2009); Impellizzeri F., Marcora S., Castagna C., Reilly T., Sassi A., Iaia F., Rampinini E., Physiological and performance effects of generic versus specific aerobic training in soccer players, International Journal of Sports Medicine, 27, 6, pp. 483-492, (2006); Jones S., Drust B., Physiological and technical demands of 4 v 4 and 8 v 8 games in elite youth soccer players, Kinesiology, 39, 2, pp. 150-156, (2007); Katis A., Kellis E., Effects of small-sided games on physical conditioning and performance in young soccer players, Journal of Sports Science & Medicine, 8, 3, pp. 374-380, (2009); Little T., Williams A.G., Suitability of soccer training drills for endurance training, Journal of Strength and Conditioning Research, 20, 2, pp. 316-319, (2006); Manzi V., Impellizzeri F., Castagna C., Aerobic fitness ecological validity in elite soccer players: A metabolic power approach, Journal of Strength and Conditioning Research, 28, 4, pp. 914-919, (2014); Owen A.L., Wong del P., McKenna M., Dellal A., Heart rate responses and technical comparison between small- vs. large-sided games in elite professional soccer, Journal of Strength and Conditioning Research, 25, 8, pp. 2104-2110, (2011); Rampinini E., Impellizzeri F., Castagna C., Abt G., Chamari K., Sassi A., Marcora S., Factors influencing physiological responses to small-sided soccer games, Journal of Sports Sciences, 25, 6, pp. 659-666, (2007); Rebelo A., Brito J., Seabra A., Oliveira J., Krustrup P., Physical match performance of youth football players in relation to physical capacity, European Journal of Sports Sciences, 14, pp. S148-S156, (2014); Taoutaou Z., Granier P., Mercier B., Ahmaidi S., Prefaut C., Lactate kinetics during passive and partially active recovery in endurance and sprint athletes, European Journal of Applied Physiology, 73, 5, pp. 465-470, (1996); Varley M.C., Aughey R.J., Acceleration profiles in elite Australian soccer, International Journal of Sports Medicine, 34, 1, pp. 34-39, (2013); Varley M.C., Faiweather J., Aughey R.J., Validity and reliability of GPS for measuring inatanteneous velocity during acceleration and constant motion, Journal of Sports Medicine, 30, pp. 121-127, (2013)","A.N.C. Rebelo; Faculdade de Desporto, Universidade do Porto, University of Porto, Porto, R. Dr. Plácido Costa, 91, 4200 - 450, Portugal; email: anatal@fade.up.pt","","Routledge","02640414","","JSSCE","27278256","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-84973596856" "Quammen D.; Cortes N.; Van Lunen B.L.; Lucci S.; Ringleb S.I.; Onate J.","Quammen, David (55162482000); Cortes, Nelson (23033673100); Van Lunen, Bonnie L. (6506227549); Lucci, Shawn (49863825100); Ringleb, Stacie I. (7801640194); Onate, James (7004831141)","55162482000; 23033673100; 6506227549; 49863825100; 7801640194; 7004831141","Two different fatigue protocols and lower extremity motion patterns during a stop-jump task","2012","Journal of Athletic Training","47","1","","32","41","9","54","10.4085/1062-6050-47.1.32","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84859224232&doi=10.4085%2f1062-6050-47.1.32&partnerID=40&md5=5b6959a7180dacafac10122e571bca4b","Human Movement Sciences Department, Old Dominion University, Norfolk, VA, United States; School of Recreation, Health, and Tourism, George Mason University, Manassas, VA, United States; Department of Mechanical Engineering, Old Dominion University, Norfolk, VA, United States; School of Allied Medical Professions, Ohio State University, 228C At-Well Hall, Columbus, OH 43210, 453 West 10th Avenue, United States","Quammen D., Human Movement Sciences Department, Old Dominion University, Norfolk, VA, United States; Cortes N., Human Movement Sciences Department, Old Dominion University, Norfolk, VA, United States, School of Recreation, Health, and Tourism, George Mason University, Manassas, VA, United States; Van Lunen B.L., Human Movement Sciences Department, Old Dominion University, Norfolk, VA, United States; Lucci S., Human Movement Sciences Department, Old Dominion University, Norfolk, VA, United States; Ringleb S.I., Department of Mechanical Engineering, Old Dominion University, Norfolk, VA, United States; Onate J., School of Allied Medical Professions, Ohio State University, 228C At-Well Hall, Columbus, OH 43210, 453 West 10th Avenue, United States","Context: Altered neuromuscular control strategies during fatigue probably contribute to the increased incidence of non-contact anterior cruciate ligament injuries in female athletes. Objective: To determine biomechanical differences between 2 fatigue protocols (slow linear oxidative fatigue protocol [SLO-FP] and functional agility short-term fatigue protocol [FAST-FP]) when performing a running-stop-jump task. Design: Controlled laboratory study. Setting: Laboratory. Patients or Other Participants: A convenience sample of 15 female soccer players (age = 19.2 ±0.8 years, height = 1.67±0.05m, mass = 61.7±8.1 kg) without injury participated. Intervention(s): Five successful trials of a running-stop-jump task were obtained prefatigue and postfatigue during the 2 protocols. For the SLO-FP, a peak oxygen consumption (V̇o2peak) test was conducted before the fatigue protocol. Five minutes after the conclusion of the V̇o2peak test, participants started the fatigue protocol by performing a 30-minute interval run. The FAST-FP consisted of 4 sets of a functional circuit. Repeated 2 (fatigue protocol) × 2 (time) analyses of variance were conducted to assess differences between the 2 protocols and time (prefatigue, postfatigue). Main Outcome Measure(s): Kinematic and kinetic measures of the hip and knee were obtained at different times while participants performed both protocols during prefatigue and postfatigue. Results: Internal adduction moment at initial contact (IC) was greater during FAST-FP (0.064 ±0.09 Nm/kgm) than SLO-FP (0.024±0.06 Nm/kgm) (F1,14 = 5.610, P=.03). At IC, participants had less hip flexion postfatigue (44.7°±8.1°) than prefatigue (50.1°±9.5°) (F1,14 = 16.229, P=.001). At peak vertical ground reaction force, participants had less hip flexion postfatigue (44.7°±8.4°) than prefatigue (50.4°±10. 3°) (F1,14 = 17.026, P=.001). At peak vertical ground reaction force, participants had less knee flexion postfatigue (-35.9°±6. 5°) than prefatigue (-38.8° ±5.03°) (F1,14 = 11.537, P= .001). Conclusions: Our results demonstrated a more erect landing posture due to a decrease in hip and knee flexion angles in the postfatigue condition. The changes were similar between protocols; however, the FAST-FP was a clinically applicable 5-minute protocol, whereas the SLO-FP lasted approximately 45 minutes. © by the National Athletic Trainers' Association, Inc.","Anterior cruciate ligament; Biomechanics; Hip; Knee","Anterior Cruciate Ligament; Athletes; Biomechanics; Fatigue; Female; Hip; Hip Joint; Humans; Knee; Lower Extremity; Muscle, Skeletal; Oxygen Consumption; Posture; Range of Motion, Articular; Running; Soccer; Young Adult; adult; anterior cruciate ligament; article; athlete; biomechanics; body posture; fatigue; female; hip; human; joint characteristics and functions; knee; leg; oxygen consumption; pathophysiology; physiology; running; skeletal muscle; sport","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in National Collegiate Athletic Association basketball and soccer: A 13-year review, American Journal of Sports Medicine, 33, 4, pp. 524-530, (2005); Mihata L.C.S., Beutler A.I., Boden B.P., Comparing the incidence of anterior cruciate ligament injury in collegiate lacrosse, soccer, and basketball players: Implications for anterior cruciate ligament mechanism and prevention, American Journal of Sports Medicine, 34, 6, pp. 899-904, (2006); Mountcastle S.B., Posner M., Kragh Jr. J.F., Taylor D.C., Gender differences in anterior cruciate ligament injury vary with activity: Epidemiology of anterior cruciate ligament injuries in a young, athletic population, American Journal of Sports Medicine, 35, 10, pp. 1635-1642, (2007); Uhorchak J.M., Scoville C.R., Williams G.N., Arciero R.A., St. Pierre P., Taylor D.C., Risk factors associated with noncontact injury of the anterior cruciate ligament. 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Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clinical Biomechanics, 16, 5, pp. 438-445, (2001); Borotikar B.S., Newcomer R., Koppes R., McLean S.G., Combined effects of fatigue and decision making on female lower limb landing postures: Central and peripheral contributions to ACL injury risk, Clinical Biomechanics, 23, 1, pp. 81-92, (2008); Chappell J.D., Herman D.C., Knight B.S., Kirkendall D.T., Garrett W.E., Yu B., Effect of fatigue on knee kinetics and kinematics in stop-jump tasks, American Journal of Sports Medicine, 33, 7, pp. 1022-1029, (2005); McLean S.G., Felin R.E., Suedekum N., Calabrese G., Passerallo A., Joy S., Impact of fatigue on gender-based high-risk landing strategies, Medicine and Science in Sports and Exercise, 39, 3, pp. 502-514, (2007); Sanna G., O'Connor K.M., Fatigue-related changes in stance leg mechanics during sidestep cutting maneuvers, Clin Biomech (Bristol, Avon), 23, 7, pp. 946-954, (2008); 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Metsios G.S., Flouris A.D., Koutedakis Y., Theodorakis Y., The effect of performance feedback on cardiorespiratory fitness field tests, Journal of Science and Medicine in Sport, 9, 3, pp. 263-266, (2006); Hughes G., Watkins J., A risk-factor model for anterior cruciate ligament injury, Sports Med., 36, 5, pp. 411-428, (2006); Blackburn J.T., Padua D.A., Sagittal-plane trunk position, landing forces, and quadriceps electromyographic activity, J Athl Train, 44, 2, pp. 174-179, (2009); Pandy M.G., Shelburne K.B., Dependence of cruciate-ligament loading on muscle forces and external load, Journal of Biomechanics, 30, 10, pp. 1015-1024, (1997); MacDonald S.W.S., Hultsch D.F., Dixon R.A., Performance variability is related to change in cognition: Evidence from the Victoria longitudinal study, Psychology and Aging, 18, 3, pp. 510-523, (2003); Yu B., Lin C.-F., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clinical Biomechanics, 21, 3, pp. 297-305, (2006); Cerulli G., Caraffa A., Cerulli G., Liti A., Benoit D.L., Lamontagne M., In vivo anterior cruciate ligament strain behaviour during a rapid deceleration movement: Case report, Knee Surgery, Sports Traumatology, Arthroscopy, 11, 5, pp. 307-311, (2003); Hirokawa S., Solomonow M., Lu Y., Lou Z.P., D'Ambrosia R., Anterior-posterior and rotational displacement of the tibia elicited by quadriceps contraction, Am J Sports Med., 20, 3, pp. 299-306, (1992); Decker M.J., Torry M.R., Wyland D.J., Sterett W.I., Steadman J.R., Gender differences in lower extremity kinematics, kinetics and energy absorption during landing, Clinical Biomechanics, 18, 7, pp. 662-669, (2003); McNair P.J., Hewson D.J., Dombroski E., Stanley S.N., Stiffness and passive peak force changes at the ankle joint: The effect of different joint angular velocities, Clinical Biomechanics, 17, 7, pp. 536-540, (2002); Baca A., A comparison of methods for analyzing drop jump performance, Medicine and Science in Sports and Exercise, 31, 3, pp. 437-442, (1999); Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, American Journal of Sports Medicine, 30, 2, pp. 261-267, (2002); Krustrup P., Mohr M., Ellingsgaard H., Bangsbo J., Physical demands during an elite female soccer game: Importance of training status, Medicine and Science in Sports and Exercise, 37, 7, pp. 1242-1248, (2005); Padua D.A., Marshall S.W., Boling M.C., Thigpen C.A., Garrett Jr. W.E., Beutler A.I., The landing error scoring system (LESS) is a valid and reliable clinical assessment tool of jump-landing biomechanics: The JUMP-ACL study, Am J Sports Med., 37, 10, pp. 1996-2002, (2009)","J. Onate; School of Allied Medical Professions, Ohio State University, 228C At-Well Hall, Columbus, OH 43210, 453 West 10th Avenue, United States; email: onate.2@osu.edu","","National Athletic Trainers' Association Inc.","10626050","","JATTE","22488228","English","J. Athl. Train.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-84859224232" "Robinson M.A.; Donnelly C.J.; Tsao J.; Vanrenterghem J.","Robinson, Mark A. (24299659200); Donnelly, Cyril J. (55030392300); Tsao, Jessica (55942844800); Vanrenterghem, Jos (6506257376)","24299659200; 55030392300; 55942844800; 6506257376","Impact of knee modeling approach on indicators and classification of anterior cruciate ligament injury risk","2014","Medicine and Science in Sports and Exercise","46","7","","1269","1276","7","49","10.1249/MSS.0000000000000236","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902546900&doi=10.1249%2fMSS.0000000000000236&partnerID=40&md5=6dd3b73f6fa304abca278b3135ef10de","School of Sport and Exercise Sciences, Liverpool John Moores University, Tom Reilly Building, Liverpool, Merseyside, L33AF, Byrom Street Campus, United Kingdom; School of Sport Science, Exercise and Health, University of Western Australia, Perth, Australia","Robinson M.A., School of Sport and Exercise Sciences, Liverpool John Moores University, Tom Reilly Building, Liverpool, Merseyside, L33AF, Byrom Street Campus, United Kingdom; Donnelly C.J., School of Sport Science, Exercise and Health, University of Western Australia, Perth, Australia; Tsao J., School of Sport and Exercise Sciences, Liverpool John Moores University, Tom Reilly Building, Liverpool, Merseyside, L33AF, Byrom Street Campus, United Kingdom; Vanrenterghem J., School of Sport and Exercise Sciences, Liverpool John Moores University, Tom Reilly Building, Liverpool, Merseyside, L33AF, Byrom Street Campus, United Kingdom","Introduction: The aim of this study was to determine whether using a direct kinematic (DK) or inverse kinematic (IK) modeling approach could influence the estimation of knee joint kinematics, kinetics, and ACL injury risk classification during unanticipated side cutting. Methods: The three-dimensional motion and force data of 34 amateur Australian rules footballers conducting unanticipated side-cutting maneuvers were collected. The model used during the DK modeling approach was an eight-segment lower body model with the hip, knee, and ankle free to move in six degrees of freedom. During the IK modeling approach, the same eight-segment model was used; however, translational constraints were imposed on the hip, knee, and ankle joints. The similarity between kinematic and kinetic waveforms was evaluated using the root mean square difference (RMSD) and the one-dimensional statistical parametric mapping (SPM1D). The classification of an athlete's ACL injury risk was determined by correlating their peak knee moments with a predefined injury risk threshold. Results: The greatest RMSD occurred in the frontal plane joint angles (RMSD = 10.86°) and moments (RMSD = 0.67 ± 0.18 N·m·kg), which were also shown to be significantly different throughout the stance phase in the SPM1D analysis. Both DK and IK modeling approaches classified the same athletes as being at risk of ACL injury. Conclusions: The choice of a DK or an IK modeling approach affected frontal plane estimates of knee joint angles and peak knee moments during the weight acceptance phase of unanticipated side cutting. However, both modeling approaches were similar in their classification of an athlete's ACL injury risk. © 2014 by the American College of Sports Medicine.","knee abduction moment; Knee loading; optimization; side cutting","Adult; Anterior Cruciate Ligament; Biomechanical Phenomena; Humans; Kinetics; Knee Injuries; Knee Joint; Male; Models, Biological; Risk Factors; Soccer; Task Performance and Analysis; Young Adult; adult; anterior cruciate ligament; biological model; biomechanics; classification; human; kinetics; knee; knee injury; male; pathophysiology; risk factor; soccer; task performance; young adult","Barrios J.A., Higginson J.S., Royer T.D., Davis I.S., Static and dynamic correlates of the knee adduction moment in healthy knees ranging from normal to varus-Aligned, Clin Biomech., 24, 10, pp. 850-854, (2009); Belvedere C., Leardini A., Giannini S., Ensini A., Bianchi L., Catani F., Does medio-lateral motion occur in the normal knee? An in-vitro study in passive motion, J Biomech., 44, 5, pp. 877-884, (2011); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Med Sci Sports Exerc., 35, 1, pp. 119-127, (2003); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc., 33, 7, pp. 1168-1175, (2001); Besier T.F., Sturnieks D.L., Alderson J.A., Lloyd D.G., Repeatability of gait data using a functional hip joint centre and a mean helical knee axis, J Biomech., 36, 8, pp. 1159-1168, (2003); Cappozzo A., Catani F., Leardini A., Benedetti M.G., Della Croce U., Position and orientation in space of bones during movement: Experimental artefacts, Clin Biomech., 11, 2, pp. 90-100, (1996); Cereatti A., Camomilla V., Vannozzi G., Cappozzo A., Propagation of the hip joint centre location error to the estimate of femur vs pelvis orientation using a constrained or an unconstrained approach, J Biomech., 40, 6, pp. 1228-1234, (2007); Collins T.D., Ghoussayni S.N., Ewins D.J., Kent J.A., A six degrees-offreedom marker set for gait analysis: Repeatability and comparison with a modified Helen Hayes set, Gait Posture., 30, 2, pp. 173-180, (2009); Delp S.L., Anderson F.C., Arnold A.S., Et al., Open Sim: Open-source software to create and analyze dynamic simulations of movement, IEEE Trans Biomed Eng., 54, 11, pp. 1940-1950, (2007); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Russo K.A., The effect of technique change on knee loads during sidestep cutting, Med Sci Sports Exerc., 39, 10, pp. 1765-1773, (2007); Dempster W.T., Space Requirements of the Seated Operator, pp. 183-201, (1955); Donnelly C.J., Elliott B.C., Ackland T.R., Et al., An anterior cruciate ligament injury prevention framework: Incorporating the recent evidence, Res Sports Med., 20, 3-4, pp. 239-262, (2012); Donnelly C.J., Elliott B.C., Doyle T.L., Finch C.F., Dempsey A.R., Lloyd D.G., Changes in knee joint biomechanics following balance and technique training and a season of Australian football, Br J SportsMed., 46, 13, pp. 917-922, (2012); Donnelly C.J., Lloyd D.G., Elliott B.C., Reinbolt J.A., Optimizing whole-body kinematics to minimize valgus knee loading during sidestepping: Implications for ACL injury risk, J Biomech., 45, 8, pp. 1491-1497, (2012); Finch C., Da Costa A., Stevensom M., Hamer P., Elliott B.C., Sports injury experiences from the Western Australian sports injury cohort study, Aust N Z J Publ Heal., 26, 5, pp. 462-467, (2002); Hamner S.R., Seth A., Delp S.L., Muscle contributions to propulsion and support during running, J Biomech., 43, 14, pp. 2709-2716, (2010); Hanavan E.P., A Mathematical Model of the Human Body: Behavioural Sciences Laboratory, pp. 7-46, (1964); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med., 33, 4, pp. 492-501, (2005); Hewett T.E., Myer G.D., Roewer B.D., Ford K.R., Letter to the editor regarding Effect of low pass filtering on joint moments from inverse dynamics: Implications for injury prevention, J Biomech, 45, 11, pp. 2058-2059, (2012); Imwalle L.E., Myer G.D., Ford K.R., Hewett T.E., Relationship between hip and knee kinematics in athletic women during side cutting maneuvers a possible link to noncontact acl injury and prevention, J Strength Cond Res., 23, 8, pp. 2223-2230, (2009); Koga H., Nakamae A., Shima Y., Et al., Mechanisms for noncontact anterior cruciate ligament injuries: Knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med., 38, 11, pp. 2218-2225, (2010); Kristianslund E., Krosshaug T., Van Den Bogert A.J., Effect of low pass filtering on joint moments from inverse dynamics: Implications for injury prevention, J Biomech., 45, 4, pp. 666-671, (2012); Leardini A., Chiari L., Della Croce U., Cappozzo A., Human movement analysis using stereophotogrammetry. Part 3. Soft tissue artifact assessment and compensation, Gait Posture., 21, 2, pp. 212-225, (2005); Lu T.-W., O'Connor J., Bone position estimation from skin marker co-ordinates using global optimisation with joint constraints, J Biomech., 32, 2, pp. 129-134, (1999); McGinley J.L., Baker R., Wolfe R., Morris M.E., The reliability of three-dimensional kinematic gait measurements: A systematic review, Gait Posture., 29, 3, pp. 360-369, (2009); McLean S.G., Huang X., Su A., Van Den Bogert A.J., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clin Biomech., 19, 8, pp. 828-838, (2004); McLean S.G., Huang X., Van Den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clin Biomech., 20, 8, pp. 863-870, (2005); McLean S.G., Huang X., Van Den Bogert A.J., Investigating isolated neuromuscular control contributions to non-contact anterior cruciate ligament injury risk via computer simulation methods, Clin Biomech., 23, 7, pp. 926-936, (2008); McLean S.G., Lipfert S.W., Van Den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc., 36, 6, pp. 1008-1016, (2004); McLean S.G., Walker K., Ford K.R., Myer G.D., Hewett T.E., Van Den Bogert A.J., Evaluation of a two dimensional analysis method as a screening and evaluation tool for anterior cruciate ligament injury, Br J Sports Med., 39, 6, pp. 355-362, (2005); Miranda D.L., Rainbow M.J., Crisco J.J., Fleming B.C., Kinematic differences between optical motion capture and biplanar videoradiography during a jump-cut maneuver, J Biomech., 46, pp. 567-573, (2013); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Biomechanics laboratory-based prediction algorithm to identify female athletes with high knee loads that increase risk of ACL injury, Br J Sports Med., 45, 4, pp. 245-252, (2011); Pataky T.C., One-dimensional statistical parametric mapping in Python, Comput Method Biomec., 15, 3, pp. 295-301, (2012); Pollard C.D., Davis I.M., Hamill J., Influence of gender on hip and knee mechanics during a randomly cued cutting maneuver, Clin Biomech., 19, 10, pp. 1022-1031, (2004); Reinschmidt C., Van Den Bogert A.J., Nigg B.M., Lundberg A., Murphy N., Effect of skin movement on the analysis of skeletal knee joint motion during running, J Biomech., 30, 7, pp. 729-732, (1997); Robinson M.A., Vanrenterghem J., An evaluation of anatomical and functional knee axis definition in the context of side-cutting, J Biomech., 45, 11, pp. 1941-1946, (2012); Sanna G., O'Connor K.M., Fatigue-related changes in stance leg mechanics during sidestep cutting maneuvers, Clin Biomech., 23, 7, pp. 946-954, (2008); Sigward S.M., Powers C.M., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clin Biomech., 21, 1, pp. 41-48, (2006); Vanrenterghem J., Venables E., Pataky T., Robinson M.A., The effect of running speed on knee mechanical loading in females during side cutting, J Biomech., 45, 14, pp. 2444-2449, (2012); Wu J.L., Hosseini A., Kozanek M., Gadikota H.R., Gill T.J., Li G., Kinematics of the anterior cruciate ligament during gait, Am J Sports Med., 38, 7, pp. 1475-1482, (2010)","M.A. Robinson; School of Sport and Exercise Sciences, Liverpool John Moores University, Tom Reilly Building, Liverpool, Merseyside, L33AF, Byrom Street Campus, United Kingdom; email: m.a.robinson@ljmu.ac.uk","","Lippincott Williams and Wilkins","01959131","","MSCSB","24300122","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-84902546900" "Lee M.J.C.; Lloyd D.G.; Lay B.S.; Bourke P.D.; Alderson J.A.","Lee, Marcus J.C. (56143449000); Lloyd, David G. (57202439944); Lay, Brendan S. (7003960150); Bourke, Paul D. (7004729754); Alderson, Jacqueline A. (8599127100)","56143449000; 57202439944; 7003960150; 7004729754; 8599127100","Effects of different visual stimuli on postures and knee moments during sidestepping","2013","Medicine and Science in Sports and Exercise","45","9","","1740","1748","8","62","10.1249/MSS.0b013e318290c28a","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883297184&doi=10.1249%2fMSS.0b013e318290c28a&partnerID=40&md5=92cfabf1f581ad9002b8dbf7d65f4902","School of Sport Science, Exercise and Health, University of Western Australia, Crawley, WA 6009, M408 Stirling Highway, Australia; Singapore Sports Institute, Singapore Sports Council, Singapore, Singapore; Centre for Musculoskeletal Research, Griffith Health Institute, Griffith University, QLD, Australia; IVE at UWA, University of Western Australia, Crawley, QLD, Australia","Lee M.J.C., School of Sport Science, Exercise and Health, University of Western Australia, Crawley, WA 6009, M408 Stirling Highway, Australia, Singapore Sports Institute, Singapore Sports Council, Singapore, Singapore; Lloyd D.G., School of Sport Science, Exercise and Health, University of Western Australia, Crawley, WA 6009, M408 Stirling Highway, Australia, Centre for Musculoskeletal Research, Griffith Health Institute, Griffith University, QLD, Australia; Lay B.S., School of Sport Science, Exercise and Health, University of Western Australia, Crawley, WA 6009, M408 Stirling Highway, Australia; Bourke P.D., IVE at UWA, University of Western Australia, Crawley, QLD, Australia; Alderson J.A., School of Sport Science, Exercise and Health, University of Western Australia, Crawley, WA 6009, M408 Stirling Highway, Australia","PURPOSE: Evasive sidestepping during sports commonly results in noncontact anterior cruciate ligament injuries. Sidestepping in response to different simple visual stimuli has been studied previously but never investigated using quasi-game-realistic visual conditions. We compared the biomechanics of high-level and low-level soccer players when sidestepping in response to projected, three-dimensional defender(s) and the traditionally used planned and unplanned arrow stimuli. METHODS: A three-dimensional motion analysis system captured the trunk and lower limb kinematics and ground reaction forces of 15 high-level and 15 low-level soccer players sidestepping in response to a one-defender scenario (1DS), two-defender scenario (2DS), arrow-planned condition (AP), and arrow-unplanned condition (AUNP). The temporal constraints imposed by the stimuli conditions resulted in increasing difficulty from AP, 1DS, 2DS, to AUNP. Selected joint kinematics and three-dimensional knee moments during the weight-acceptance phase of sidestepping were analyzed. RESULTS: Hip external rotation at initial foot contact was smaller when participants sidestepped in response to the projected defenders versus arrow conditions. Hip abduction was smallest in the AP, moderate in the defender scenarios, and largest in the AUNP. Peak knee valgus moments were 25% larger in the defender scenarios and 70% larger in the AUNP compared with the AP. High-level players exhibited decreased hip abduction and knee valgus moments in the 2DS compared with the low-level players. CONCLUSIONS: Compared with the arrow conditions, sidestepping in response to the defender(s) resulted in different postures and knee moments, which further differentiated between high-level and low-level players in the complex 2DS. These findings highlight the effects of stimuli realism and complexity on the visual-perceptual-motor skill of sidestepping, which has implications for anterior cruciate ligament injury prevention. Copyright © 2013 by the American College of Sports Medicine.","Anterior Cruciate Ligament; Body Reorientation; Cutting; Injury; Threedimensional Biomechanics","Adult; Biomechanical Phenomena; Cues; Hip Joint; Humans; Knee Joint; Male; Movement; Photic Stimulation; Posture; Soccer; Weight-Bearing; Young Adult; adult; article; association; biomechanics; body posture; hip; human; knee; male; movement (physiology); photostimulation; physiology; soccer; weight bearing; young adult","Abernethy B., Training the visual-perceptual skills of athletes, Am J Sports Med, 24, 6, pp. 89-92, (1996); Abernethy B., Wann J., Parks S., Training perceptual motor skills for sport, Training in Sport: Applying Sport Science, pp. 1-68, (1998); Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A 13-year review, Am J Sports Med, 33, 4, pp. 524-530, (2005); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting manoeuvres, Med Sci Sports Exerc, 35, 1, pp. 119-127, (2003); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., Anticipatory effects on knee joint loading during running and cutting manoeuvres, Med Sci Sports Exerc, 33, 7, pp. 1176-1181, (2001); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting manoeuvres, Med Sci Sports Exerc, 33, 7, pp. 1168-1175, (2001); Besier T.F., Sturnieks D.L., Alderson J.A., Lloyd D.G., Repeatability of gait data using a functional hip joint centre and helical axis, J Biomech, 36, 8, pp. 1159-1168, (2003); Brown T.N., Palmieri-Smith R.M., McLean S.G., Sex and limb differences in hip and knee kinematics and kinetics during anticipated and unanticipated jump landings: Implications for anterior cruciate ligament injury, Br J Sports Med, 43, 13, pp. 1049-1056, (2009); Capozzo A., Catani F., Della Croce U., Leardini A., Position and orientation in space of bones during movement: Anatomical frame definition and determination, Clin Biomech, 10, 4, pp. 171-178, (1995); Chaudhari A.M., Hearn B.K., Andriacchi T.P., Sport-dependent variations in arm position during single-limb landing influence knee loading: Implications for anterior cruciate ligament injury, Am J Sports Med, 33, 6, pp. 824-830, (2005); Cochrane J.L., Lloyd D.G., Besier T.F., Elliott B.C., Doyle T.L.A., Ackland T.R., Training affects knee kinematics and kinetics in cutting maneuvers in sport, Med Sci Sports Exerc, 42, 8, pp. 1535-1544, (2010); Cochrane J.L., Lloyd D.G., Buttfield A., Seward H., McGivern J., Characteristic of anterior cruciate ligament injuries in australian football, J Sci Med Sport, 10, 2, pp. 96-104, (2007); De Leva P., Adjustments to zatsiorsky-seluyanov's segment inertia parameters, J Biomech, 29, 9, pp. 1223-1230, (1996); Decker M.J., Torry M.R., Wyland D.J., Sterett W.I., Richard Steadman J., Gender differences in lower extremity kinematics, kinetics and energy absorption during landing, Clin Biomech, 18, 7, pp. 662-669, (2003); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Changing sidestep cutting technique reduces knee valgus loading, Am J Sports Med, 37, 11, pp. 2194-2200, (2009); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Russo K.A., The effect of technique change on knee loads during sidestep cutting, Med Sci Sports Exerc, 39, 10, pp. 1765-1773, (2007); Farrow D., Young W., Bruce L., The development of a test of reactive agility for netball: A new methodology, J Sci Med Sport, 8, 1, pp. 52-60, (2005); Fedie R., Carlstedt K., Willson J.D., Kernozek T.W., Effect of attending to a ball during a side-cut manoeuvre on lower extremity biomechanics in male and female athletes, Sports Biomech, 9, 3, pp. 165-177, (2010); Griffin L.Y., Agel J., Albohm M.J., Et al., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, J Am Acad Orthop Surg, 8, 3, pp. 141-150, (2000); Hewett T.E., Lindenfeld T.N., Ricobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes: A prospective study, Am J Sports Med, 27, 6, pp. 699-706, (1999); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes. A prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Ireland M., Anterior cruciate ligament injury in female athletes: Epidemiology, J Athl Train, 34, 2, pp. 150-154, (1999); Jackson R.C., Farrow D., Implicit perceptual training: How, when, and why, Hum Mov Sci, 24, 3, pp. 308-325, (2005); Krosshaug T., Nakamae A., Boden B.P., Et al., Mechanisms of anterior cruciate ligament injury in basketball, Am J Sports Med, 35, 3, pp. 359-367, (2007); Lee M.J.C., Bourke P., Alderson J.A., Lloyd D.G., Lay B., Stereoscopic filming for investigating evasive sidestepping and anterior cruciate ligament injury risk, Stereoscopic Displays and Applications XXI Proceedings of the SPIE IS&T Electronic Imaging, (2010); Lee M.J.C., Reid S.L., Elliott B.C., Lloyd D.G., Running biomechanics and lower limb strength associated with prior hamstring injury, Med Sci Sports Exerc, 41, 10, pp. 1942-1951, (2009); Lloyd D.G., Rationale for training programmes to reduce acl injuries in australian football, J Orthop Sports Phys Ther, 31, 11, pp. 645-654, (2001); Lloyd D.G., Besier T.F., An EMG-drive musculoskeletal model to estimate muscle forces and knee joint moments in vivo, J Biomech, 36, 6, pp. 765-776, (2003); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, Journal of Orthopaedic Research, 13, 6, pp. 930-935, (1995); Markolf K.L., O'Neill G., Jackson S.R., McAllister D.R., Effects of applied quadriceps and hamstrings muscle loads on forces in the anterior and posterior cruciate ligaments, Am J Sports Med, 32, 5, pp. 1144-1149, (2004); McLean S.G., Huang X., Van Den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clin Biomech, 20, 8, pp. 863-870, (2005); McLean S.G., Lipfert S.W., Van Den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, 6, pp. 1008-1016, (2004); McLean S.G., Su A., Van Den Bogert A.J., Development and validation of a 3-D model to predict knee joint loading during dynamic movement, J Biomech Eng, 125, 6, pp. 864-874, (2003); Mihata L.C.S., Beautler A.I., Boden B.P., Comparing the incidence of anterior cruciate ligament injury in collegiate lacrosse, soccer, and basketball players: Implications for anterior cruciate ligament mechanism and prevention, Am J Sports Med, 34, 6, pp. 899-904, (2006); Myer G.D., Ford K.R., McLean S.G., Hewett T.E., The effects of plyometric versus dynamic stabilization and balance training on lower extremity biomechanics, Am J Sports Med, 34, 3, pp. 445-455, (2006); Olsen O.-E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med, 32, 4, pp. 1002-1012, (2004); Patla A.E., Adkin A., Ballard T., Online steering: Coordination and control of body centre of mass, head and body reorientation, Exp Brain Res, 129, 4, pp. 629-634, (1999); Vickers J.N., Visual control when aiming at a far target, J Exp Psychol Hum Percept Perform, 22, 2, pp. 342-354, (1996); Williams A.M., Davids K., Visual search strategy, selective attention, and expertise in soccer, Res Q Exerc Sport, 69, 2, pp. 111-128, (1998); Winter D.A., Human balance and posture control during standing and walking, Gait Posture, 3, 5, pp. 193-214, (1995)","M.J.C. Lee; School of Sport Science, Exercise and Health, University of Western Australia, Crawley, WA 6009, M408 Stirling Highway, Australia; email: marcus.lee@uwa.edu.au","","","15300315","","MSCSB","23481170","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-84883297184" "Babbs C.F.","Babbs, C.F. (58394297200)","58394297200","Biomechanics of heading a soccer ball: implications for player safety.","2001","TheScientificWorldJournal","1","","","281","322","41","46","10.1100/tsw.2001.56","https://www.scopus.com/inward/record.uri?eid=2-s2.0-1542601162&doi=10.1100%2ftsw.2001.56&partnerID=40&md5=fe8c5a147fb07391cc27767c6daf4cbd","Department of Basic Medical Sciences, Purdue University, West Lafayette, 47907-1246, Indiana, United States","Babbs C.F., Department of Basic Medical Sciences, Purdue University, West Lafayette, 47907-1246, Indiana, United States","To better understand the risk and safety of heading a soccer ball, the author created a set of simple mathematical models based upon Newton's second law of motion to describe the physics of heading. These models describe the player, the ball, the flight of the ball before impact, the motion of the head and ball during impact, and the effects of all of these upon the intensity and the duration of acceleration of the head. The calculated head accelerations were compared to those during presumably safe daily activities of jumping, dancing, and head nodding and also were related to established criteria for serious head injury from the motor vehicle crash literature. The results suggest heading is usually safe but occasionally dangerous, depending on key characteristics of both the player and the ball. Safety is greatly improved when players head the ball with greater effective body mass, which is determined by a player""s size, strength, and technique. Smaller youth players, because of their lesser body mass, are more at risk of potentially dangerous headers than are adults, even when using current youth size balls. Lower ball inflation pressure reduces risk of dangerous head accelerations. Lower pressure balls also have greater ""touch"" and ""playability"", measured in terms of contact time and contact area between foot and ball during a kick. Focus on teaching proper technique, the re-design of age-appropriate balls for young players with reduced weight and inflation pressure, and avoidance of head contact with fast, rising balls kicked at close range can substantially reduce risk of subtle brain injury in players who head soccer balls.","","Adult; Athletic Injuries; Biomechanics; Brain Injuries; Craniocerebral Trauma; Head; Head Injuries, Closed; Humans; Models, Theoretical; Monte Carlo Method; Safety; Soccer; Stress, Mechanical; MLCS; MLOWN; adult; article; biomechanics; brain injury; head; head injury; human; mechanical stress; Monte Carlo method; physiology; safety; sport; sport injury; statistics; theoretical model","","C.F. Babbs; email: babbs@purdue.edu","","","1537744X","","","12806070","English","ScientificWorldJournal","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-1542601162" "Bretzin A.C.; Mansell J.L.; Tierney R.T.; McDevitt J.K.","Bretzin, Abigail C. (57193533582); Mansell, Jamie L. (11739569300); Tierney, Ryan T. (7004140314); McDevitt, Jane K. (36453263600)","57193533582; 11739569300; 7004140314; 36453263600","Sex Differences in Anthropometrics and Heading Kinematics Among Division I Soccer Athletes: A Pilot Study","2017","Sports Health","9","2","","168","173","5","57","10.1177/1941738116678615","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85014705607&doi=10.1177%2f1941738116678615&partnerID=40&md5=1ef45ccb141956ee34dcbed869391917","Department of Kinesiology, Michigan State University, East Lansing, MI, United States; Department of Kinesiology, Temple University, Philadelphia, PA, United States; Department of Athletic Training, East Stroudsburg University, East Stroudsburg, PA, United States","Bretzin A.C., Department of Kinesiology, Michigan State University, East Lansing, MI, United States; Mansell J.L., Department of Kinesiology, Temple University, Philadelphia, PA, United States; Tierney R.T., Department of Kinesiology, Temple University, Philadelphia, PA, United States; McDevitt J.K., Department of Athletic Training, East Stroudsburg University, East Stroudsburg, PA, United States","Background: Soccer players head the ball repetitively throughout their careers; this is also a potential mechanism for a concussion. Although not all soccer headers result in a concussion, these subconcussive impacts may impart acceleration, deceleration, and rotational forces on the brain, leaving structural and functional deficits. Stronger neck musculature may reduce head-neck segment kinematics. Hypothesis: The relationship between anthropometrics and soccer heading kinematics will not differ between sexes. The relationship between anthropometrics and soccer heading kinematics will not differ between ball speeds. Study Design: Pilot, cross-sectional design. Level of Evidence: Level 3. Methods: Division I soccer athletes (5 male, 8 female) were assessed for head-neck anthropometric and neck strength measurements in 6 directions (ie, flexion, extension, right and left lateral flexions and rotations). Participants headed the ball 10 times (25 or 40 mph) while wearing an accelerometer secured to their head. Kinematic measurements (ie, linear acceleration and rotational velocity) were recorded at 2 ball speeds. Results: Sex differences were observed in neck girth (t = 5.09, P < 0.001), flexor and left lateral flexor strength (t = 3.006, P = 0.012 and t = 4.182, P = 0.002, respectively), and rotational velocity at both speeds (t = −2.628, P = 0.024 and t = −2.227, P = 0.048). Neck girth had negative correlations with both linear acceleration (r = −0.599, P = 0.031) and rotational velocity at both speeds (r = −0.551, P = 0.012 and r = −0.652, P = 0.016). Also, stronger muscle groups had lower linear accelerations at both speeds (P < 0.05). Conclusion: There was a significant relationship between anthropometrics and soccer heading kinematics for sex and ball speeds. Clinical Relevance: Neck girth and neck strength are factors that may limit head impact kinematics. © 2016, © 2016 The Author(s).","biomechanics; cervical musculature; head injuries/concussion; neck strength","Anthropometry; Biomechanical Phenomena; Brain Concussion; Cross-Sectional Studies; Female; Head; Humans; Male; Muscle Strength; Neck; Neck Muscles; Pilot Projects; Sex Factors; Soccer; anatomy and histology; anthropometry; biomechanics; brain concussion; cross-sectional study; female; head; human; injuries; male; muscle strength; neck; neck muscle; pathophysiology; physiology; pilot study; sex difference; soccer","Aagaard P., Andersen J.L., Dyhre Poulsen P., Et al., A mechanism for increased contractile strength of human pennate muscle in response to strength training: changes in muscle architecture, J Physiol, 534, pp. 613-623, (2001); Agel J., Evans T.A., Dick R., Putukian M., Marshall S.W., Descriptive epidemiology of collegiate men’s soccer injuries: National Collegiate Athletic Association Injury Surveillance System, 1988-1989 through 2002-2003, J Athl Train, 42, pp. 270-276, (2007); Alway S.E., MacDougall J.D., Sale D.G., Contractile adaptations in the human triceps aurae after isometric exercise, J Appl Physiol, 66, pp. 2725-2732, (1989); Bauer J.A., Thomas T.S., Cauraugh J.H., Kaminski T.W., Hass C.J., Impact forces and neck muscle activity in heading by collegiate female soccer players, J Sports Sci, 19, pp. 171-179, (2001); Bazarian J.J., Zhu T., Blyth B., Borrino A., Zhong J., Subject-specific changes in brain white matter on diffusion tensor imaging after sports-related concussion, Magn Reson Imaging, 30, pp. 171-180, (2012); Bazarian J.J., Zhu T., Zhong J., Et al., Persistent, long-term cerebral white matter changes after sports-related repetitive head impacts, PLoS One, 9, (2014); Browne K.D., Chen X.H., Meaney D.F., Smith D.H., Mild traumatic brain injury and diffuse axonal injury in swine, J Neurotrauma, 28, pp. 1747-1755, (2011); Dashnaw M.L., Pharm D., Petraglia A.L., Bailes J.E., An overview of the basic science of concussion and subconcussion: where we are and where we are going, Neurosurg Focus, 22, 6, (2012); De Witt J.K., Hinrichs R.N., Mechanical factors associated with the development of high ball velocity during an instep soccer kick, Sports Biomech, 11, pp. 382-390, (2012); Dezman Z.D., Ledet E.H., Kerr H.A., Neck strength imbalance correlates with increased head acceleration in soccer heading, Sports Health, 5, pp. 320-326, (2013); Dick R., Putukian M., Agel J., Evans T.A., Marshall S.W., Descriptive epidemiology of collegiate women’s soccer injuries: National Collegiate Athletic Association Injury Surveillance System, 1988-1989 through 2002-2003, J Athl Train, 42, pp. 278-284, (2007); Eckner J.T., Oh Y.K., Joshi M.S., Richardson J.K., Ashton-Miller J.A., Effect of neck muscle strength and anticipatory cervical muscle activation on the kinematic response of the head to impulsive loads, Am J Sports Med, 42, pp. 566-576, (2014); Ferraz R., Van Den Tillar R., Marques M.C., The effect of fatigue on kicking velocity in soccer players, J Hum Kinet, 35, pp. 97-107, (2012); Gilchrist M.D., Experimental device for simulating traumatic brain injury resulting from linear accelerations, Strain, 40, pp. 180-192, (2004); Gutierrez G.M., Conte C., Lightbourne K., The relationship between impact force, neck strength, and neurocognitive performance in soccer heading in adolescent females, Pediatr Exerc Sci, 26, pp. 33-40, (2014); Lincoln A.E., Caswell S.V., Almquist J.L., Dunn R.E., Norris J.B., Hinton R.Y., Trends in concussion incidence in high school sports: a prospective 11-year study, Am J Sports Med, 39, pp. 958-963, (2011); Lipton M.L., Kim N., Zimmerman M.E., Et al., Soccer heading is associated with white matter microstructural and cognitive abnormalities, Radiology, 268, pp. 850-857, (2013); Lisman P., Signorile J.F., Del Rossi G., Et al., Investigation of the effects of cervical strength training on neck strength, EMG, and head kinematics during a football tackle, Int J Sports Sci Eng, 6, pp. 131-140, (2012); MacDougall J.D., Sale D.G., Moroz J.R., Elder G.C., Sutton J.R., Howald H., Mitochondrial volume density in human skeletal muscle fibers following heavy resistance training, Med Sci Sports, 11, pp. 164-166, (1979); Mansell J., Tierney R.T., Sitler M.R., Swanik K.A., Stearne D., Resistance training and head-neck segment dynamic stabilization in male and female collegiate soccer players, J Athl Train, 40, pp. 310-319, (2005); Mansell J.L., Tierney R.T., Higgins M., McDevitt J., Toone N., Glutting J., Concussive signs and symptoms following head impacts in collegiate athletes, Brain Inj, 24, pp. 1070-1074, (2010); McAllister T.W., Ford J.C., Flashman L.A., Et al., Effect of head impacts on diffusivity measures in a cohort of collegiate contact sport athletes, Neurology, 82, pp. 63-69, (2014); McCrory P., Meeuwisse W.H., Aubry M., Et al., Br J Sports Med, 47, pp. 250-258, (2012); Mihalik J.P., Blackburn J.T., Greenwald R.M., Cantu R.C., Marshall S.W., Guskiewicz K.M., Collision type and player anticipation affect head impact severity among youth ice hockey players, Pediatrics, 125, pp. e1394-e1401, (2010); Mihalik J.P., Guskiewicz K.M., Marshall S.W., Greenwald R.M., Blackburn J.T., Cantu R.C., Does cervical muscle strength in youth ice hockey players affect head impact biomechanics?, Clin J Sport Med, 21, pp. 416-421, (2011); Naunheim R.S., Bayly P.V., Standeven J., Neubauer J.S., Lewis L.M., Genin G.M., Linear and angular head accelerations during heading of a soccer ball, Med Sci Sports Exerc, 35, pp. 1406-1412, (2003); Niogi S.N., Mukherjee P., Ghajar J., Et al., Structural dissociation of attentional control and memory in adults with and without mild traumatic brain injury, Brain, 131, pp. 3209-3221, (2008); Ommaya A.K., Gennarelli T.A., Cerebral concussion and traumatic unconsciousness: correlation of experimental and clinical observations on blunt head injuries, Brain, 97, pp. 633-654, (1974); Plagenhoef S., Evans F.G., Abdelnour T., Anatomical data for analyzing human motion, Res Q Exerc Sport, 54, pp. 169-178, (1983); Tierney R.T., Higgins M., Caswell S.V., Et al., Sex differences in head acceleration during heading while wearing soccer headgear, J Athl Train, 43, pp. 578-584, (2008); Tierney R.T., Sitler M.S., Swanik C.B., Swanik K.A., Higgins M., Torg J., Gender differences in head-neck segment dynamic stabilization during head acceleration, Med Sci Sports Exerc, 37, pp. 272-279, (2005); Viano D.C., Casson I.R., Pellman E.J., Concussion in professional football: biomechanics of the struck player—part 14, Neurosurgery, 61, pp. 313-328, (2007); Zaumseil F., Relation between shoe soccer stiffness and kicking ball velocity, Footwear Sci, 3, pp. S172-S173, (2011)","A.C. Bretzin; Department of Kinesiology, Michigan State University, East Lansing, 308 West Circle Drive, 48824, United States; email: bretzina@msu.edu","","SAGE Publications Inc.","19417381","","","28225689","English","Sports Health","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-85014705607" "Scurr J.; Hall B.","Scurr, Joanna (25648274100); Hall, Ben (15520638100)","25648274100; 15520638100","The effects of approach angle on penalty kicking accuracy and kick kinematics with recreational soccer players","2009","Journal of Sports Science and Medicine","8","2","","230","234","4","43","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-67650092270&partnerID=40&md5=f9405a27e164d04b4d3e48325a09831c","Department of Sport and Exercise Science, University of Portsmouth, Portsmouth, United Kingdom","Scurr J., Department of Sport and Exercise Science, University of Portsmouth, Portsmouth, United Kingdom; Hall B., Department of Sport and Exercise Science, University of Portsmouth, Portsmouth, United Kingdom","Kicking accuracy is an important component of successful penalty kicks, which may be influenced by the approach angle. The purpose of this study was to examine the effects of approach angle on kicking accuracy and three-dimensional kinematics of penalty kicks. Seven male amateur recreational soccer players aged (mean ± s) 26 ± 3 years, body mass 74.0 ± 6.8 kg, stature 1.74 ± 0.06 m, who were right foot dominant, kicked penalties at a 0.6 × 0.6 m target in a full size goal from their self-selected approach angle, 30°, 45° and 60° (direction of the kick was 0°). Kicking accuracy and three-dimensional kinematics were recorded. Results revealed that there was no significant difference in kicking accuracy (p = 0.27) or ball velocity (p = 0.59) between the approach angles. Pelvic rotation was significantly greater under the 45° and the 60° approach angles than during the self-selected approach angle (p < 0.05). Thigh abduction of the kicking leg at impact using the 60° approach angle was significantly greater than during the self-selected approach (p = 0.01) and the 30° approach (p = 0.04). It was concluded that altering an individual's self-selected approach angle at recreational level did not improve kicking accuracy or ball velocity, despite altering aspects of underlying technique. © Journal of Sports Science and Medicine.","Biomechanics; Football; Instep kick; Three-dimensional","","Barfield W.R., Biomechanics of kicking in soccer, Clinical Sports Medicine, 17, pp. 711-728, (1998); Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, Journal of Sports Science and Medicine, 1, pp. 72-79, (2002); Brown E.W., Wilson D.J., Mason B.R., Baker J., Three-dimensional kinematics of the direct free kick in soccer when opposed by a defensive wall, Biomechanics in Sport XI, pp. 334-338, (1993); Davids K., Lees A., Burwitz L., Understanding and measuring coordination and control in kicking skills in soccer: Implications for talent identification and skill acquisition, Journal of Sports Sciences, 18, pp. 703-714, (2000); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, pp. 293-299, (2002); Finnoff J.T., Newcomer K., Laskowski E.R., A valid and reliable method for measuring the kicking accuracy of soccer players, Journal of Science and Medicine in Sport, 5, 4, pp. 348-353, (2002); Hay J.G., The Biomechanics of Sports Techniques, (1985); Isokawa M., Lees A., A biomechanical analysis of the instep kick motion in soccer, Science and Football, pp. 449-455, (1988); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Medicine and Science in Sport and Exercise, 36, pp. 1017-1028, (2004); Kuhn W., Penalty-kick strategies for shooters and goalkeepers, Science and Football, pp. 489-492, (1988); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (1998); Lees A., Nolan L., Three-Dimensional Kinematic Analysis of the Instep Kick Under Speed and Accuracy Conditions, Science and Football IV, pp. 16-21, (2002); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, pp. 917-927, (1998); McLean B.D., Tumilty D., Left - right asymmetry in two types of soccer kick, British Journal of Sports Medicine, 27, pp. 260-262, (1993); Morris A., Burwitz L., Anticipation and movement strategies in elite soccer goalkeepers at penalty kicks, Journal of Sports Sciences, 7, pp. 79-80, (1989); Morya E., Ranvaud R., Pinheiro W.M., Dynamics of visual feedback in a laboratory simulation of a penalty kick, Journal of Sports Sciences, 21, pp. 87-95, (2003); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer skills, Medicine and Science in Sport and Exercise, 34, pp. 2028-2036, (2002); Rodano R., Tavana R., Three-dimensional analysis of the instep kick in professional soccer players, Science and Football II, pp. 357-361, (1993); Shan G., Westerhoff P., Full-body Kinematic Characteristics of the Maximal Instep Soccer Kick by Male Soccer Players and Parameters Related to Kick Quality, Sports Biomechanics, 4, 1, pp. 59-72, (2005)","J. Scurr; Department of Sport and Exercise Science, University of Portsmouth, Portsmouth, PO1 2ER, Spinnaker Building, Cambridge Road, United Kingdom; email: Joanna.scurr@port.ac.uk","","","13032968","","","","English","J. Sports Sci. Med.","Article","Final","","Scopus","2-s2.0-67650092270" "Miller L.E.; Pinkerton E.K.; Fabian K.C.; Wu L.C.; Espeland M.A.; Lamond L.C.; Miles C.M.; Camarillo D.B.; Stitzel J.D.; Urban J.E.","Miller, Logan E. (55955121600); Pinkerton, Elizabeth K. (57207856252); Fabian, Katie C. (57207858197); Wu, Lyndia C. (56050329900); Espeland, Mark A. (35236499700); Lamond, Lindsey C. (57191057586); Miles, Christopher M. (56723593400); Camarillo, David B. (6506423628); Stitzel, Joel D. (7003389866); Urban, Jillian E. (36119491100)","55955121600; 57207856252; 57207858197; 56050329900; 35236499700; 57191057586; 56723593400; 6506423628; 7003389866; 36119491100","Characterizing head impact exposure in youth female soccer with a custom-instrumented mouthpiece","2020","Research in Sports Medicine","28","1","","55","71","16","42","10.1080/15438627.2019.1590833","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063079481&doi=10.1080%2f15438627.2019.1590833&partnerID=40&md5=8ac4bf1e7f4e3aed40a06893d48a2413","Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States; Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Winston Salem, NC, United States; Department of Bioengineering, Stanford University, Stanford, CA, United States; Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, NC, United States; Department of Family and Community Medicine, Wake Forest School of Medicine, Winston Salem, NC, United States","Miller L.E., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Winston Salem, NC, United States; Pinkerton E.K., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States; Fabian K.C., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States; Wu L.C., Department of Bioengineering, Stanford University, Stanford, CA, United States; Espeland M.A., Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, NC, United States; Lamond L.C., Department of Family and Community Medicine, Wake Forest School of Medicine, Winston Salem, NC, United States; Miles C.M., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States; Camarillo D.B., Department of Bioengineering, Stanford University, Stanford, CA, United States; Stitzel J.D., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Winston Salem, NC, United States; Urban J.E., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Winston Salem, NC, United States","While many research efforts have focused on head impact exposure in professional soccer, there have been few studies characterizing exposure at the youth level. The aim of this study is to evaluate a new instrumentation approach and collect some of the first head impact exposure data for youth female soccer players. Athletes were instrumented with custom-fit mouthpieces that measure head impacts. Detailed video analysis was conducted to identify characteristics describing impact source (e.g., kick, header, throw). A total of 763 verified head impacts were collected over 23 practices and 8 games from 7 athletes. The median peak linear accelerations, rotational velocities, and rotational accelerations of all impacts were 9.4 g, 4.1 rad/s, and 689 rad/s2, respectively. Pairwise comparisons resulted in statistically significant differences in kinematics by impact source. Headers following a kicked ball had the highest accelerations and velocity when compared to headers from thrown or another header. © 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group.","head impact exposure; instrumentation; mouthpiece; Subconcussive head impacts; women’s soccer","Adolescent; Athletic Injuries; Biomechanical Phenomena; Child; Female; Head Injuries, Closed; Humans; Mouth Protectors; Soccer; acceleration; adolescent; article; female; head; human; juvenile; kinematics; soccer player; videorecording; biomechanics; child; head injury; injury; mouth protector; pathophysiology; soccer; sport injury","Abramowitz M., Stegun I.A., Handbook of mathematical functions: With formulas, graphs, and mathematical tables, 55, (1965); Boden B.P., Kirkendall D.T., Garrett W.E., Concussion incidence in elite college soccer players, The American Journal of Sports Medicine, 26, 2, pp. 238-241, (1998); Caccese J.B., Buckley T.A., Tierney R.T., Arbogast K.B., Rose W.C., Glutting J.J., Kaminski T.W., Head and neck size and neck strength predict linear and rotational acceleration during purposeful soccer heading, Sports Biomechanics, 17, 4, pp. 462-476, (2018); Caccese J.B., Buckley T.A., Tierney R.T., Rose W.C., Glutting J.J., Kaminski T.W., Sex and age differences in head acceleration during purposeful soccer heading, Research in Sports Medicine, 26, 1, pp. 64-74, (2018); Caccese J.B., Lamond L.C., Buckley T.A., Kaminski T.W., Reducing purposeful headers from goal kicks and punts may reduce cumulative exposure to head acceleration, Research in Sports Medicine, 24, 4, pp. 407-415, (2016); Camarillo D.B., Shull P.B., Mattson J., Shultz R., Garza D., An instrumented mouthguard for measuring linear and angular head impact kinematics in American football, Annals of Biomedical Engineering, 41, 9, pp. 1939-1949, (2013); Chrisman S.P.D., Ebel B.E., Stein E., Lowry S.J., Rivara F.P., Head impact exposure in youth soccer and variation by age and sex, Clinical Journal of Sport Medicine, (2017); Chrisman S.P.D., Mac Donald C.L., Friedman S., Andre J., Rowhani-Rahbar A., Drescher S., Rivara F.P., Head impact exposure during a weekend youth soccer tournament, Journal of Child Neurology, 31, 8, pp. 971-978, (2016); Comstock R.D., Currie D.W., Pierpoint L.A., Grubenhoff J.A., Fields S.K., An evidence-based discussion of heading the ball and concussions in high school soccer, JAMA pediatrics, 169, 9, pp. 830-837, (2015); Cuff S.C., Coxe K., Young J.A., Li H., Yi H., Yang J., Concussion clinic presentation and symptom duration for pediatric sports-related concussions following Ohio concussion law, Research in Sports Medicine, 27, 1, pp. 11-20, (2019); Dick R.W., Is there a gender difference in concussion incidence and outcomes?, British Journal of Sports Medicine, 43, pp. i46-i50, (2009); Downs D., Abwender D., Neuropsychological impairment in soccer athletes, Journal of Sports Medicine and Physical Fitness, 42, 1, (2002); FIFA data big count 2006, (2007); Funk J.R., Cormier J.M., Bain C.E., Guzman H., Bonugli E., Manoogian S.J., Head and neck loading in everyday and vigorous activities, Annals of Biomedical Engineering, 39, 2, pp. 766-776, (2011); Gessel L.M., Collins C.L., Dick R.W., Concussions among United States high school and collegiate athletes, Journal of Athletic Training, 42, 4, (2007); Haglund Y., Eriksson E., Does amateur boxing lead to chronic brain damage? A review of some recent investigations, The American Journal of Sports Medicine, 21, 1, pp. 97-109, (1993); Hanlon E.M., Bir C.A., Real-time head acceleration measurement in girls’ youth soccer, Medicine and Science in Sports and Exercise, 44, 6, pp. 1102-1108, (2012); Harriss A., Walton D.M., Dickey J.P., Direct player observation is needed to accurately quantify heading frequency in youth soccer, Research in Sports Medicine, 26, 2, pp. 191-198, (2018); Hood E.A., Klima D.W., Chui K.K., Avallone N.J., Pre-season concussion assessment utilizing the King-Devick Test, Research in Sports Medicine, pp. 1-6, (2018); Hootman J.M., Dick R., Agel J., Epidemiology of collegiate injuries for 15 sports: Summary and recommendations for injury prevention initiatives, Journal of Athletic Training, 42, 2, pp. 311-319, (2007); Hunter L.E., Ifrah C., Zimmerman M.E., Kim M., Lipton R.B., Stewart W.F., Lipton M.L., Heading and unintentional head impacts have opposing associations with patient reported outcomes in amateur soccer players, Research in Sports Medicine, 26, 4, pp. 390-400, (2018); (2016); Jordan S.E., Green G.A., Galanty H.L., Mandelbaum B.R., Jabour B.A., Acute and chronic brain injury in United States National Team soccer players, The American Journal of Sports Medicine, 24, 2, pp. 205-210, (1996); Kaminski T.W., Wikstrom A.M., Gutierrez G.M., Glutting J.J., Purposeful heading during a season does not influence cognitive function or balance in female soccer players, Journal of Clinical and Experimental Neuropsychology, 29, 7, pp. 742-751, (2007); Langhorst P., Youth sports participation statistics and trends, Engage Sports, (2016); Lincoln A.E., Caswell S.V., Almquist J.L., Dunn R.E., Norris J.B., Hinton R.Y., Trends in concussion incidence in high school sports a prospective 11-year study, The American Journal of Sports Medicine, 39, 5, pp. 958-963, (2011); Littell R., Milliken G., Stroup W., Wolfinger R., SAS system for mixed models, (1996); Marar M., McIlvain N.M., Fields S.K., Comstock R.D., Epidemiology of concussions among United States high school athletes in 20 sports, The American Journal of Sports Medicine, 40, 4, pp. 747-755, (2012); McCuen E., Svaldi D., Breedlove K., Kraz N., Cummiskey B., Breedlove E.L., Zanath E., Collegiate women’s soccer players suffer greater cumulative head impacts than their high school counterparts, Journal of Biomechanics, 48, 13, pp. 3720-3723, (2015); Miller L.E., Kuo C., Wu L.C., Urban J.E., Camarillo D.B., Stitzel J.D., Validation of a custom instrumented retainer form factor for measuring linear and angular head impact kinematics, Journal of Biomechanical Engineering, 140, (2018); Naunheim R.S., Bayly P.V., Standeven J., Neubauer J.S., Lewis L.M., Genin G.M., Linear and angular head accelerations during heading of a soccer ball, Medicine and Science in Sports and Exercise, 35, 8, pp. 1406-1412, (2003); O'Kane J.W., Spieker A., Levy M.R., Neradilek M., Polissar N.L., Schiff M.A., Concussion among female middle-school soccer players, JAMA pediatrics, 168, 3, pp. 258-264, (2014); Press J.N., Rowson S., Quantifying head impact exposure in collegiate women’s soccer, Clinical Journal of Sport Medicine, (2016); Rowson S., Daniel R., Young T., Cobb B., Urban J., Davenport E., Whitlow C., Head acceleration measurements during head impact in pediatric populations, (2012); Salinas C.M., Webbe F.M., Devore T.T., The epidemiology of soccer heading in competitive youth players, Journal of Clinical Sport Psychology, 3, 1, pp. 15-33, (2009); Self B.P., Beck J., Schill D., Eames C., Knox T., Plaga J., Head accelerations during soccer heading, The engineering of sport 6, pp. 81-86, (2006); Instrumentation for impact test, part I: Electronic instrumentation, Technical Report, SAE J211/1, (2007); Tyson A., Rowson S., Duma S., Laboratory evaluation of low-cost wearable head impact sensors, (2017); Tysvaer A.T., Lochen E.A., Soccer injuries to the brain A neuropsychologic study of former soccer players, The American Journal of Sports Medicine, 19, 1, pp. 56-60, (1991); Tysvaer A.T., Storli O.-V., Soccer injuries to the brain A neurologic and electroencephalographic study of active football players, The American Journal of Sports Medicine, 17, 4, pp. 573-578, (1989); (2015); (2015); (2010); Walker L.B., Harris E.H., Pontius U.R., Mass, volume, center of mass, and mass moment of inertia of head and head and neck of human body (No. 0148–7191), SAE Technical Paper, (1973); Wu L.C., Laksari K., Kuo C., Luck J.F., Kleiven S., Cameron R., Camarillo D.B., Bandwidth and sample rate requirements for wearable head impact sensors, Journal of Biomechanics, 49, 13, pp. 2918-2924, (2016); Wu L.C., Nangia V., Bui K., Hammoor B., Kurt M., Hernandez F., Camarillo D.B., In vivo evaluation of wearable head impact sensors, Annals of Biomedical Engineering, pp. 1-12, (2016); Wu L.C., Zarnescu L., Nangia V., Cam B., Camarillo D.B., A head impact detection system using SVM classification and proximity sensing in an instrumented mouthguard, Biomedical Engineering, IEEE Transactions On, 61, 11, pp. 2659-2668, (2014)","J.E. Urban; Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, 575 N. Patterson Ave., Suite 120, 27106, United States; email: jurban@wakehealth.edu","","Taylor and Francis Inc.","15438627","","RSMEC","30880469","English","Res. Sports Med.","Article","Final","","Scopus","2-s2.0-85063079481" "Winkelman N.C.; Clark K.P.; Ryan L.J.","Winkelman, Nicklaas C. (57193214686); Clark, Kenneth P. (56400133700); Ryan, Larry J. (57212499426)","57193214686; 56400133700; 57212499426","Experience level influences the effect of attentional focus on sprint performance","2017","Human Movement Science","52","","","84","95","11","42","10.1016/j.humov.2017.01.012","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85011715835&doi=10.1016%2fj.humov.2017.01.012&partnerID=40&md5=7ecb07ea1d7ab20ca7a6f8e15c4947f2","Rocky Mountain University of Health Professions, 122 E 1700 S, Provo, 84606, UT, United States; Southern Methodist University, 5538 Dyer St., Suite 105, Dallas, 75206, TX, United States; West Chester University, 206 Sturzbecker Health Sciences Center, West Chester, 19383, PA, United States","Winkelman N.C., Rocky Mountain University of Health Professions, 122 E 1700 S, Provo, 84606, UT, United States; Clark K.P., Southern Methodist University, 5538 Dyer St., Suite 105, Dallas, 75206, TX, United States, West Chester University, 206 Sturzbecker Health Sciences Center, West Chester, 19383, PA, United States; Ryan L.J., Southern Methodist University, 5538 Dyer St., Suite 105, Dallas, 75206, TX, United States","Two experiments evaluated the influence of attentional focus on 10-meter sprint time and start kinetics in a group of collegiate soccer players and highly experienced sprinters. In Experiment 1, the collegiate soccer players were asked to perform 10-meter sprints under an external focus condition, an internal focus condition and a control condition. For the 10-meter sprint time, the results showed that both the external focus and control conditions resulted in significantly faster sprint times than the internal focus condition. There were no significant differences observed between the external focus and control conditions. There were also no significant differences observed across any of the conditions for a select set of kinetic variables. In Experiment 2, the highly experienced sprinters performed the same 10-meter sprint task using the same instructional conditions as in Experiment 1. For the 10-meter sprint time and kinetic variables, there were no significant differences observed across any of the conditions. These results provide new evidence that experience level mediates the influence of attentional focus on sprint performance. © 2017 Elsevier B.V.","Focus of attention; Human performance; Kinetic analysis; Sprinting","Adult; Athletes; Athletic Performance; Attention; Biomechanical Phenomena; Humans; Kinetics; Male; Running; Soccer; Young Adult; attention; human; kinetics; soccer player; adult; athlete; athletic performance; attention; biomechanics; kinetics; male; physiology; psychology; running; soccer; young adult","Al-Abood S.A., Bennett S.J., Hernandez F.M., Ashford D., Davids K., Effect of verbal instructions and image size on visual search strategies in basketball free throw shooting, Journal of Sports Sciences, 20, 3, pp. 271-278, (2002); An J., Wulf G., Kim S., Increased carry distance and X-factor stretch in golf through an external focus of attention, Journal of Motor Learning and Development, 1, 1, pp. 2-11, (2013); Anderson J.R., Acquisition of cognitive skill, Psychological Review, 89, 4, pp. 369-406, (1982); 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Munzert J., Maurer H., Reiser M., Verbal-motor attention-focusing instructions influence kinematics and performance on a golf-putting task, Journal of Motor Behavior, 46, 5, pp. 309-318, (2014); Parr R., Button C., End-point focus of attention: Learning the ‘catch’ in rowing, International Journal of Sport Psychology, 40, 4, pp. 616-635, (2009); Poolton J.M., Maxwell J.P., Masters R.S.W., Raab M., Benefits of an external focus of attention: Common coding or conscious processing?, Journal of Sports Sciences, 24, 1, pp. 89-99, (2006); Porter J.M., Nolan R.P., Ostrowski E.J., Wulf G., Directing attention externally enhances agility performance: A qualitative and quantitative analysis of the efficacy of using verbal instructions to focus attention, Frontiers in Psychology, 1, 216, pp. 1-7, (2010); Porter J.M., Ostrowski E.J., Nolan R.P., Wu W.F., Standing long-jump performance is enhanced when using an external focus of attention, Journal of Strength & Conditioning Research, 24, 7, pp. 1746-1750, (2010); Porter J.M., Sims B., Altering focus of attention influences elite athletes sprinting performance, International Journal of Coaching Science, 8, 2, pp. 41-51, (2013); Porter J.M., Wu W., Partridge J., Focus of attention and verbal instructions: Strategies of elite track and field coaches and athletes, Sport Science Review, 19, 3-4, pp. 199-211, (2010); Porter J.M., Wu W.F.W., Crossley R.M., Knopp S.W., Adopting an external focus of attention improves sprinting performance in low-skilled sprinters, Journal of Strength & Conditioning Research, 29, 4, pp. 947-953, (2015); Rabita G., Dorel S., Slawinski J., Saez-de-Villarreal E., Couturier A., Samozino P., Morin J.B., Sprint mechanics in world-class athletes: A new insight into the limits of human locomotion, Scandinavian Journal of Medicine & Science in Sports, 25, 5, pp. 583-594, (2015); Schack T., The cognitive architecture of complex movement, International Journal of Sport and Exercise Psychology, 2, 4, pp. 403-438, (2004); Song S., Consciousness and the consolidation of motor learning, Behavioural Brain Research, 196, 2, pp. 180-186, (2009); Stoate I., Wulf G., Does the attentional focus adopted by swimmers affect their performance?, International Journal of Sports Science and Coaching, 6, 1, pp. 99-108, (2011); Swann C., Moran A., Piggott D., Defining elite athletes: Issues in the study of expert performance in sport psychology, Psychology of Sport and Exercise, 16, 1, pp. 3-14, (2015); Talpey S., Young W., Beseler B., Effect of instructions on selected jump squat variables, Journal of Strength & Conditioning Research, 30, 9, pp. 2508-2513, (2016); Vas A.K., Spence J., Chapman S.B., Abstracting meaning from complex information (gist reasoning) in adult traumatic brain injury, Journal of Clinical and Experimental Neuropsychology, 37, 2, pp. 152-161, (2015); Weyand P.G., Sandell R.F., Prime D.N., Bundle M.W., The biological limits to running speed are imposed from the ground up, Journal of Applied Physiology, 108, 4, pp. 950-961, (2010); Weyand P.G., Sternlight D.B., Bellizzi M.J., Wright S., Faster top running speeds are achieved with greater ground forces not more rapid leg movements, Journal of Applied Physiology, 89, 5, pp. 1991-1999, (2000); Wu W.F., Porter J.M., Brown L.E., Effect of attentional focus strategies on peak force and performance in the standing long jump, Journal of Strength & Conditioning Research, 26, 5, pp. 1226-1231, (2012); Wulf G., Attentional focus effects in balance acrobats, Research Quarterly for Exercise and Sport, 79, 3, pp. 319-325, (2008); Wulf G., Attentional focus and motor learning: A review of 15 years, International Review of Sport and Exercise Psychology, 6, 1, pp. 77-104, (2013); Wulf G., Dufek J.S., Increased jump height with an external focus due to enhanced lower extremity joint kinetics, Journal of Motor Behavior, 41, 5, pp. 401-409, (2009); Wulf G., Hoss M., Prinz W., Instructions for motor learning: Differential effects of internal versus external focus of attention, Journal of Motor Behavior, 30, 2, pp. 169-179, (1998); Wulf G., Lewthwaite R., Effortless motor learning? An external focus of attention enhances movement effectiveness and efficiency, Effortless attention: A new perspective in attention and action, pp. 75-101, (2010); Wulf G., McConnel N., Gartner M., Schwarz A., Enhancing the learning of sport skills through external-focus feedback, Journal of Motor Behavior, 34, 2, pp. 171-182, (2002); Wulf G., McNevin N., Shea C.H., The automaticity of complex motor skill learning as a function of attentional focus, The Quarterly Journal of Experimental Psychology, 54, 4, pp. 1143-1154, (2001); Wulf G., McNevin N.H., Fuchs T., Ritter F., Toole T., Attentional focus in complex skill learning, Research Quarterly for Exercise and Sport, 71, 3, pp. 229-239, (2000); Wulf G., Su J., An external focus of attention enhances golf shot accuracy in beginners and experts, Research Quarterly for Exercise and Sport, 78, 4, pp. 384-389, (2007); Wulf G., Weigelt M., Poulter D., McNevin N., Attentional focus on suprapostural tasks affects balance learning, The Quarterly Journal of Experimental Psychology, 56, 7, pp. 1191-1211, (2003); Wulf G., Zachry T., Granados C., Dufek J., Increases in jump-and-reach height through an external focus of attention, International Journal of Sports Science and Coaching, 2, 3, pp. 275-284, (2007); Zentgraf K., Munzert J., Effects of attentional-focus instructions on movement kinematics, Psychology of Sport and Exercise, 10, 5, pp. 520-525, (2009)","N.C. Winkelman; Irish Rugby Football Union, Dublin, 10-12 Lansdowne Road, Ballsbridge, Ireland; email: Nick.Winkelman@irfu.ie","","Elsevier B.V.","01679457","","HMSCD","28182969","English","Hum. Mov. Sci.","Article","Final","","Scopus","2-s2.0-85011715835" "Read P.J.; Michael Auliffe S.; Wilson M.G.; Graham-Smith P.","Read, Paul J. (55764420600); Michael Auliffe, Sean (57216411178); Wilson, Mathew G. (25825824400); Graham-Smith, Philip (23992390400)","55764420600; 57216411178; 25825824400; 23992390400","Lower Limb Kinetic Asymmetries in Professional Soccer Players With and Without Anterior Cruciate Ligament Reconstruction: Nine Months Is Not Enough Time to Restore “Functional” Symmetry or Return to Performance","2020","American Journal of Sports Medicine","48","6","","1365","1373","8","48","10.1177/0363546520912218","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85083458450&doi=10.1177%2f0363546520912218&partnerID=40&md5=914cea7aef5d870846a055190ba00c1a","Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; School of Sport and Exercise Sciences, University of Gloucestershire, Gloucester, United Kingdom; Physiotherapy Program, Qatar University, Doha, Qatar; Institute of Sport Exercise and Health, London, United Kingdom; University College London, London, United Kingdom; Aspire Academy, Doha, Qatar","Read P.J., Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar, School of Sport and Exercise Sciences, University of Gloucestershire, Gloucester, United Kingdom; Michael Auliffe S., Physiotherapy Program, Qatar University, Doha, Qatar; Wilson M.G., Institute of Sport Exercise and Health, London, United Kingdom, University College London, London, United Kingdom; Graham-Smith P., Aspire Academy, Doha, Qatar","Background: Residual between-limb deficits are a possible contributing factor to poor outcomes in athletic populations after anterior cruciate ligament reconstruction (ACLR). Comprehensive appraisals of movement strategies utilized by athletes at key clinical milestones during rehabilitation are warranted. Purpose: To examine kinetic parameters recorded during a countermovement jump with a force platform in healthy professional soccer players and to compare their performance with those who had undergone ACLR at different stages of their rehabilitation. Study Design: Cross-sectional study; Level of evidence, 3. Methods: A total of 370 male professional soccer players attended a physical screening assessment where they performed at counter jump movement protocol on dual force plates and were divided into 4 groups: group 1 (<6 months post-ACLR), group 2 (6-9 months post-ACLR), group 3 (>9 months post-ACLR), and group 4 (healthy matched controls). Results: Players in the later phases of rehabilitation increased their jump performance; however, values were significantly lower than those of healthy matched controls (P >.05). Significant between-limb differences were present for both eccentric- and concentric-phase variables (P <.05), with effect sizes ranging from moderate to very large (d = 0.42-1.35). Asymmetries were lower in players who were further away from surgery; however, between-limb differences remained significantly greater in players >9 months after ACLR versus matched controls—specifically, for concentric impulse, concentric peak force, eccentric deceleration impulse, and eccentric deceleration rate of force development asymmetry (P <.05). Logistic regression identified concentric impulse asymmetry as being most strongly associated with a history of ACLR when group prediction analysis was performed (ACLR group 1, 2, or 3 vs matched controls), with odds ratios ranging from 1.50 to 1.91. Conclusion: Between-limb deficits in key eccentric and concentric loading parameters remain >9 months after ACLR, indicating a compensatory offloading strategy to protect the involved limb during an athletic performance task. Concentric impulse asymmetry could be considered an important variable to monitor during rehabilitation. © 2020 The Author(s).","ACL; biomechanics; knee; rehabilitation","Anterior Cruciate Ligament Injuries; Anterior Cruciate Ligament Reconstruction; Cross-Sectional Studies; Female; Humans; Leg Length Inequality; Lower Extremity; Male; Soccer; adult; anterior cruciate ligament reconstruction; article; athletic performance; biomechanics; controlled study; cross-sectional study; deceleration; effect size; human; human experiment; knee; male; prediction; soccer player; anterior cruciate ligament injury; female; leg length inequality; lower limb; soccer","Ageberg E., Cronstrӧm A., Agreement between test procedures for the single-leg hop for distance and the single-leg mini squat as measures of lower extremity function, BMC Sports Sci Med Rehabil, 10, (2018); Arnason A., Sigurdsson S.B., Gudmundsson A., Holme I., Engebretsen L., Bahr R., Physical fitness, injuries, and team performance in soccer, Med Sci Sports Exerc, 36, pp. 278-285, (2004); Baumgart C., Hoppe M.W., Freiwald J., Phase-specific ground reaction force analyses of bilateral and unilateral jumps in patients with ACL reconstruction, Orthop J Sports Med, 5, 6, (2017); Baumgart C., Schubert M., Hoppe M.W., Gokeler A., Freiwald J., Do ground reaction forces during unilateral and bilateral movements exhibit compensation strategies following ACL reconstruction, Knee Surg Sports Tramatol Arthrosc, 25, pp. 1385-1394, (2017); Beynnon B.D., Johnson R.J., Naud S., Et al., Accelerated versus nonaccelerated rehabilitation after anterior cruciate ligament reconstruction: a prospective, randomized, double blind investigation evaluating knee joint laxity using roentgen stereo photogrammetric analysis, Am J Sports Med, 39, pp. 2536-2548, (2011); Bishop C., Read P.J., Lake J., Chavda S., Turner A.N., Interlimb asymmetries: understanding how to calculate differences from bilateral and unilateral tests, Strength Cond J, 40, pp. 1-6, (2018); Bishop C., Turner A.N., Maloney S., Lake J., Read P.J., Interlimb asymmetries: the need for an individual approach to data analysis, J Strength Cond Res, (2018); Burgi C.R., Peters S., Ardern C.L., Et al., Which criteria are used to clear patients to return to sport after primary ACL reconstruction? A scoping review, Br J Sports Med, 53, 18, pp. 1154-1161, (2019); Dai B., Butler R.J., Garrett W.E., Queen R.M., Using ground reaction force to predict knee kinetic asymmetry following anterior cruciate ligament reconstruction, Scand J Med Sci Sports, 24, pp. 974-981, (2014); Dos' Santos T., Bishop C., Thomas C., Comfort P., Jones P.A., The effect of limb dominance on change of direction biomechanics: a systematic review of its importance for injury risk, Phys Ther Sport, 37, pp. 179-189, (2019); Grindem H., Snyder-Mackler L., Moksnes H., Engebretsen L., Risberg M.A., Simple decision rules reduce injury risk after anterior cruciate ligament reconstruction: the Delaware-Olso Cohort Study, Br J Sports Med, 50, pp. 804-808, (2016); Hart L.M., Cohen D.D., Patterson S.D., Springham M., Reynolds J., Read P.J., Previous injury is associated with heightened countermovement jump force-time asymmetries in professional soccer players, Transl Sports Med, 2019, pp. 250-256, (2019); Hiemstra L.A., Webber S., MacDonald P.B., Kriellaars D.J., Knee strength deficits after hamstring tendon and patellar tendon anterior cruciate ligament reconstruction, Med Sci Sports Exerc, 32, pp. 1472-1479, (2000); Ingersoll C.D., Grindtsaff T.L., Pietrosimone B.G., Hart J.M., Neuromuscular consequences of anterior cruciate ligament injury, Clin Sports Med, 27, pp. 383-404, (2008); Jordan M.J., Aagaard P., Herzog W., Lower limb asymmetry in mechanical muscle function: a comparison between ski racers with and without ACL reconstruction, Scand J Med Sci Sports, 25, pp. 301-309, (2015); King E., Richter C., Franklyn-Miller A., Wadey R., Moran R., Strike S., Back to normal symmetry? Biomechanical variables remain more asymmetrical than normal during jump and change of direction testing 9 months after anterior cruciate ligament reconstruction, Am J Sports Med, 47, pp. 1175-1185, (2019); Koga H., Nakamae A., Shima Y., Et al., Mechanisms for noncontact anterior cruciate ligament injuries: knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, pp. 2218-2225, (2010); Kyritsis P., Bahr R., Landreau P., Miladi R., Witvouw E., Liklihood of ACL graft rupture: not meeting six clinical discharge criteria before return to sport is associated with a four times greater risk of rupture, Br J Sports Med, 50, pp. 946-951, (2016); Lai C.C.H., Feller J.A., Webster K.E., Fifteen-year audit of anterior ligament reconstructions in the Australian football league from 1999 to 2013: return to play and subsequent re injury, Am J Sports Med, 46, pp. 3353-3360, (2018); Linthorne N.P., Analysis of standing vertical jumps using a force platform, Am J Phys, 69, pp. 1198-1204, (2001); Lohmander L.S., Ostenberg A., Englund M., Roos H., High prevalence of knee osteoarthritis, pain, and functional limitations in female soccer players twelve years after anterior cruciate ligament injury, Arthritis Rheum, 50, pp. 3145-3152, (2004); Losciale J.M., Zdeb R.M., Ledbetter L., Reiman M.P., Sell T.C., The association between passing return-to-sport criteria and second anterior cruciate ligament injury risk: a systematic review with meta-analysis, J Orthop Sports Phys Ther, 49, pp. 43-54, (2019); Miles J.J., King E., Falvey E., Daniels K., Patellar and hamstring autografts are associated with different jump task loading asymmetries after ACL reconstruction, Scand J Med Sci Sports, 29, 8, pp. 1212-1222, (2019); Munro A.G., Herrington L.C., Between session reliability of four hop tests and the agility T-test, J Strength Cond Res, 25, pp. 1470-1477, (2011); Myer G.D., Schmitt L.C., Brent J.L., Et al., Utilization of modified NFL combine testing to identify functional deficits in athletes following ACL reconstruction, J Orthop Sports Phys Ther, 41, 6, pp. 377-387, (2011); Myers R.H., Classical and Modern Regression With Applications, (1990); Nagelli C.V., Hewett T.E., Should return to sport be delayed until 2 years after anterior cruciate ligament reconstruction? Biological and functional considerations, Sports Med, 47, pp. 221-232, (2017); O'Malley E., Richter C., King E., Et al., Countermovement jump and isokinetic dynamometry as measures of rehabilitation status after anterior cruciate ligament reconstruction, J Athl Train, 53, pp. 687-695, (2018); Palmieri-Smith G.A., Levine D.S., O'Brien S.J., Wickiewicz T.L., Warren R.F., Maximizing quadriceps strength after ACL reconstruction, Clin Sports Med, 27, pp. 405-424, (2008); Paterno M.V., Ford K.R., Myer G.D., Heyl R., Hewett T.E., Limb asymmetries in landing and jumping 2 years following anterior cruciate ligament reconstruction, Clin J Sport Med, 17, pp. 258-262, (2007); Paterno M.V., Schmitt L.C., Ford K.R., Et al., Biomechanical measures during landing and postural stability predict second anterior cruciate ligament injury after anterior cruciate ligament reconstruction and return to sport, Am J Sports Med, 38, pp. 1968-1978, (2010); Read P.J., Oliver J.L., Myer G.D., De Ste Croix M.B.A., Lloyd R.S., The effects of maturation on measures of asymmetry during neuromuscular control tests in elite male youth soccer players, Pediatr Exerc Sci, 30, pp. 168-175, (2018); Robertson D.G.E., Fleming D., Kinetics of standing broad and vertical jump, Can J Sport Sci, 12, 1, pp. 19-23, (1987); Roi G.S., Creta D., Nanni G., Marcacci M., Zaffagnini S., Snyder-Mackler L., Return to official Italian first division games within 90 days after anterior cruciate ligament reconstruction: a case report, J Orthop Sports Phys Ther, 25, pp. 52-67, (2006); Shelbourne K.D., Gray T., Hharo M., Incidence of subsequent injury to either knee within 5 years after anterior cruciate ligament reconstruction with patellar tendon autograft, Am J Sports Med, 37, pp. 246-251, (2009); Sigward S.M., Chan M.-S., Lin P.E., Almansouri S.Y., Pratt K.A., Compensatory strategies that reduce knee extensor demand during bilateral squat change from 3 to 5 months following anterior cruciate ligament reconstruction, J Orthop Sports Phys Ther, 9, pp. 713-718, (2018); Vescovi J.D., McGuigan M.R., Relationships between sprinting, agility, and jumping ability in female athletes, J Sports Sci, 26, pp. 97-107, (2008); Walden M., Hagglund M., Ekstrand J., High risk of new knee injury in elite footballers with previous anterior cruciate ligament injury, Br J Sports Med, 40, pp. 158-162, (2006); Webster K.E., Hewett T.E., What is the evidence for and validity of return-to-sport testing after anterior cruciate ligament reconstructive surgery? A systematic review and meta-analysis, Sports Med, 49, pp. 917-929, (2019); Wellsandt E., Failla M.J., Snyder-Mackler L., Limb symmetry indexes can overestimate knee function after ACL injury, J Orthop Sports Phys Ther, 47, 5, pp. 334-338, (2017); Xergia S.A., Pappas E., Zampeli F., Georgiou S., Georgoulis A., Asymmetries in functional hop tests, lower extremity kinematics, and isokinetic strength persist 6 to 9 months following anterior cruciate ligament reconstruction, J Orthop Sports Phys Ther, 43, 3, pp. 154-163, (2013)","P.J. Read; Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; email: paul.read@aspetar.com","","SAGE Publications Inc.","03635465","","AJSMD","32293904","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-85083458450" "Kartal A.; Yildiran I.; Şenköylü A.; Korkusuz F.","Kartal, Alparslan (6701375369); Yildiran, Ibrahim (6503877924); Şenköylü, Alparslan (14050911400); Korkusuz, Feza (7003845679)","6701375369; 6503877924; 14050911400; 7003845679","Soccer causes degenerative changes in the cervical spine","2004","European Spine Journal","13","1","","76","82","6","42","10.1007/s00586-003-0623-y","https://www.scopus.com/inward/record.uri?eid=2-s2.0-1442351416&doi=10.1007%2fs00586-003-0623-y&partnerID=40&md5=bfe139742c6d560479f6d288a1ddcfb5","Çankaya University, Ankara, Turkey; Dept. of Phys. Education and Sports, Gazi University, Beşevler, Ankara, Turkey; Medical Center, Middle East Technical University, Ankara, Turkey; Medical Center, Middle East Technical University, 06531 Ankara, Inönü Bulvan, Turkey","Kartal A., Çankaya University, Ankara, Turkey; Yildiran I., Dept. of Phys. Education and Sports, Gazi University, Beşevler, Ankara, Turkey; Şenköylü A., Medical Center, Middle East Technical University, Ankara, Turkey; Korkusuz F., Medical Center, Middle East Technical University, 06531 Ankara, Inönü Bulvan, Turkey","Background. Radiological changes and degeneration of the cervical spine have been previously described in soccer players. The onset of such changes was 10-20 years earlier than that of the normal population. The aim of this study was to assess these early degenerative changes in amateur active and veteran soccer players in a cross-sectional descriptive study using biomechanical, radiological, and magnetic resonance measures. Methods. The subjects were active (<30 years; n=15) and veteran (>30 years; n=15) male amateur soccer players, and their age-matched controls (n=13 and n=15). Biomechanical measurements were made on a cervical dynamometer. Dynamic radiological and magnetic resonance findings were also obtained and evaluated. Results. The normalized mean extension moment was higher in the active soccer players, but the mean range of motion was lower. Degenerative changes were prominent in veteran players, and the sagittal diameter of their spinal canal at C2 to C6 was lower when compared to active players and controls. Magnetic resonance findings of degeneration were more prominent in soccer players when compared to their age-matched controls. Conclusion. A tendency towards early degenerative changes exists in soccer players most probably due to high- and/or low-impact recurrent trauma to the cervical spine caused by heading the ball.","Biomechanics; Cervical spine; Low-impact recurrent trauma; Magnetic resonance; Radiology; Soccer","Adult; Biomechanics; Cervical Vertebrae; Cross-Sectional Studies; Cumulative Trauma Disorders; Humans; Magnetic Resonance Imaging; Male; Neck Injuries; Range of Motion, Articular; Soccer; Spinal Diseases; adult; article; biomechanics; cervical spine injury; controlled study; dynamometry; evaluation; human; intermethod comparison; joint function; male; medical assessment; normal human; nuclear magnetic resonance imaging; priority journal; spine radiography; sport","Berg H.E., Berggren G., Tesch P.A., Dynamic neck strength training effect on pain and function, Arch Phys Med Rehabil, 75, pp. 661-665, (1994); Dihlmann W., Joints and Vertebral Connections: Clinical Radiology, (1985); Dvorak J., Panjabi M.M., Novotny J.E., Antinnes J.A., In vivo flexion/extension of the normal cervical spine, J Orthop Res, 9, pp. 828-834, (1991); Ferrario V.F., Sforza C., Serrao G., Grassi G.P., Mossi E., Active range of motion of the head and cervical spine: A three dimensional investigation in healthy young adults, J Orthop Res, 20, pp. 122-129, (2002); Fried T., Lloyd G.J., An overview of common soccer injuries. Management and prevention, Sports Med, 14, pp. 269-275, (1992); Fujiwara K., Prognosis and risk factors in cervical spondylosis, Cervical Spondylosis and Similar Disorders, pp. 627-649, (1998); Hoy K., Lindblad B.E., Terkelsen C.J., Helleland H.E., European soccer injuries. A prospective epidemiologic and socioeconomic study, Am J Sports Med, 20, pp. 318-322, (1992); Jordan A., Mehlsen J., Bulow P.M., Ostergaard K., Danneskiold-Samsoe B., Maximal isometric strength of the cervical musculature in 100 healthy volunteers, Spine, 24, pp. 1343-1348, (1999); Jordan S.E., Green G.A., Galanty H.L., Mandelbaum B.R., Jabour B.A., Acute and chronic brain injury in United States national team soccer players, Am J Sports Med, 24, pp. 205-210, (1996); Kalyon T.A., Athletes Health and Sports Injuries, (1994); Kurosawa H., Yamanoi T., Yamakoshi K., Radiographic findings of degeneration in cervical spines of middle-aged soccer players, Skeletal Radiol, 20, pp. 437-440, (1991); Leggett S.H., Graves J.E., Pollock M.L., Shank M., Carpenter D.M., Holmes B., Fulton M., Quantitative assessment and training of isometric cervical extension strength, Am J Sports Med, 19, pp. 635-659, (1991); Lind B., Sihlbom H., Nordwall A., Malchau H., Normal range of motion of the cervical spine, Arch Phys Med Rehabil, 70, pp. 692-695, (1989); Lindenfeld T.N., Schmitt D.J., Hendy M.P., Mangine R.E., Noyes F.R., Incidence of injury in indoor soccer, Am J Sports Med, 22, pp. 364-371, (1994); Mannion A.F., Klein G.N., Dvorak J., Lanz C., Range of global motion of the cervical spine: Intraindividual reliability and the influence of measurement device, Eur Spine J, 9, pp. 379-385, (2000); Matser E.J., Kessels A.G., Lezak M.D., Jordan B.D., Troost J., Neurophysiological impairment in amateur soccer players, J Am Med Assoc, 282, pp. 971-973, (1999); Nolan J.P., Sherk H.H., Biomechanical evaluation of the extensor musculature of the cervical spine, Spine, 13, pp. 9-11, (1988); Pollock M.L., Graves J.E., Bamman M.M., Et al., Frequency and volume of resistance training. Effect on cervical extension strength, Arch Phys Med Rehabil, 74, pp. 1080-1086, (1993); Reid S.E., Epstein H.M., Louis M.W., Physiologic response to impact, J Trauma, 15, pp. 150-152, (1975); Roozmon P., Gracovetsky S.A., Gouw G.J., Newman N., Examining motion in the cervical spine II. Characterization of coupled joint motion using an opto-electronic device to track skin markers, J Biomed Eng, 15, pp. 13-22, (1993); Scoppetta C., Vaccario M.L., Central cervical cord syndrome after heading a football, Lancet, 10, 1-8076, (1978); Tysvaer A.T., Head and neck injuries in soccer. Impact of minor trauma, Sports Med, 14, pp. 200-213, (1992); Tysvaer A.T., Lochen E.A., Soccer injuries to the brain. A neurophysiologic study of former soccer players, Am J Sports Med, 19, pp. 56-60, (1991); Uslu B., Sports Injuries, (1994); White A.A., Panjabi M.M., Clinical Biomechanics of the Spine, 2nd Edn., (1990); Ylinen J.J., Rezasoltani A., Julin M.V., Virtapohja H.A., Malkia E.A., Reproducibility of isometric strength: Measurement of neck muscles, Clin Biomech, 14, pp. 217-219, (1999); Youdas J.W., Carey J.R., Garrett T.R., Reliability of measurements of cervical spine range of motion. Comparison of three methods, Phys Ther, 71, pp. 98-104, (1991)","F. Korkusuz; Medical Center, Middle East Technical University, 06531 Ankara, Inönü Bulvan, Turkey; email: feza@metu.edu.tr","","","09406719","","ESJOE","14648304","English","Eur. Spine J.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-1442351416" "Gehring D.; Wissler S.; Mornieux G.; Gollhofer A.","Gehring, D. (36763456900); Wissler, S. (55385714000); Mornieux, G. (12142812400); Gollhofer, A. (55851165900)","36763456900; 55385714000; 12142812400; 55851165900","How to sprain your ankle - a biomechanical case report of an inversion trauma","2013","Journal of Biomechanics","46","1","","175","178","3","70","10.1016/j.jbiomech.2012.09.016","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84871429940&doi=10.1016%2fj.jbiomech.2012.09.016&partnerID=40&md5=c637aa8f9721acf089a0c2e24c04d83f","Department of Sport and Sport Science, University of Freiburg, 79117 Freiburg, Schwarzwaldstrasse 175, Germany","Gehring D., Department of Sport and Sport Science, University of Freiburg, 79117 Freiburg, Schwarzwaldstrasse 175, Germany; Wissler S., Department of Sport and Sport Science, University of Freiburg, 79117 Freiburg, Schwarzwaldstrasse 175, Germany; Mornieux G., Department of Sport and Sport Science, University of Freiburg, 79117 Freiburg, Schwarzwaldstrasse 175, Germany; Gollhofer A., Department of Sport and Sport Science, University of Freiburg, 79117 Freiburg, Schwarzwaldstrasse 175, Germany","In order to develop preventive measures against lateral ankle sprains, it is essential to have a detailed understanding of the injury mechanism. Under laboratory experimental conditions the examination of the joint load has to be restricted with clear margins of safety. However, in the present case one athlete sprained his ankle while performing a run-and-cut movement during a biomechanical research experiment. 3D kinematics, kinetics, and muscle activity of the lower limb were recorded and compared to 16 previously performed trials. Motion patterns of global pelvis orientation, hip flexion, and knee flexion in the sprain trail deviated from the reference trials already early in the preparatory phase before ground contact. During ground contact, the ankle was rapidly plantar flexed (up to 1240°/s), inverted (up to 1290°/s) and internally rotated (up to 580°/s) reaching its maximum displacement within the first 150. ms after heel strike. Rapid neuromuscular activation bursts of the m. tibialis anterior and the m. peroneus longus started 40-45. ms after ground contact and overshot the activation profile of the reference trials with peak activation at 62. ms and 74. ms respectively. Therefore, it may be suggested that neuromuscular reflexes played an important role in joint control during the critical phase of excessive ankle displacement. The results of this case report clearly indicate that (a) upper leg mechanics, (b) pre-landing adjustments, and (c) neuromuscular contribution have to be considered in the mechanism of lateral ankle sprains. © 2012 Elsevier Ltd.","Ankle; EMG; Injury; Kinematics; Kinetics; Soccer","Adult; Ankle Injuries; Biomechanics; Humans; Leg; Male; Movement; Muscle, Skeletal; Sprains and Strains; Young Adult; Biomechanics; Enzyme kinetics; Joints (anatomy); Kinematics; 3-D kinematics; Ankle; Biomechanical research; Case reports; EMG; Experimental conditions; Ground contacts; Hip flexion; Injury; Injury mechanisms; Joint control; Joint loads; Knee flexions; Lower limb; Maximum displacement; Motion pattern; Muscle activities; Preventive measures; Soccer; Tibialis anterior; adult; ankle sprain; article; athlete; biomechanics; case report; hip; human; kinematics; knee function; male; muscle contraction; neuromuscular function; peroneus muscle; priority journal; tibialis anterior muscle; Physiological models","Bahr R., Krosshaug T., Understanding injury mechanisms: a key component of preventing injuries in sport, British Journal of Sports Medicine, 39, pp. 324-329, (2005); Besier T.F., Lloyd D.G., Ackland T.R., Cochrane J.L., Anticipatory effects on knee joint loading during running and cutting maneuvers, Medicine and Science in Sports and Exercise, 33, pp. 1176-1181, (2001); Fong D.T., Hong Y., Shima Y., Krosshaug T., Yung P.S., Chan K.M., Biomechanics of supination ankle sprain: a case report of an accidental injury event in the laboratory, American Journal of Sports Medicine, 37, pp. 822-827, (2009); Fong D.T., Hong Y., Chan L.K., Yung P.S., Chan K.M., A systematic review on ankle injury and ankle sprain in sports, Sports Medicine, 37, pp. 73-94, (2007); Grood E., Suntay W., A joint coordinate system for the clinical description of three-dimensional motions: application to the knee, Journal of Biomechanical Engineering, 105, pp. 136-144, (1983); Gutierrez G.M., Kaminski T.W., Douex A.T., Neuromuscular control and ankle instability, Physical Medicine and Rehabilitation, 1, pp. 359-365, (2009); Hewett T.E., Myer G.D., The mechanistic connection between the trunk, hip, knee, and anterior cruciate ligament injury, Exercise and Sport Sciences Reviews, 39, pp. 161-166, (2011); Kristianslund E., Bahr R., Krosshaug T., Kinematics and kinetics of an accidental lateral ankle sprain, Journal of Biomechanics, 44, pp. 2576-2578, (2011); Krosshaug T., Andersen T.E., Olsen O.E., Myklebust G., Bahr R., Research approaches to describe the mechanisms of injuries in sport: limitations and possibilities, British Journal of Sports Medicine, 39, pp. 330-339, (2005); Lee S., Piazza S., Inversion-eversion moment arms of gastrocnemius and tibialis anterior measured in vivo, Journal of Biomechanics, 41, pp. 3366-3370, (2008); McCullough M.B.A., Ringleb S.I., Arai K., Kitaoka H.B., Kaufman K.R., Moment arms of the ankle throughout the range of motion in three planes, Foot and Ankle International, 32, pp. 300-306, (2011); Mok K.M., Fong D.T., Krosshaug T., Engebretsen L., Hung A.S., Yung P.S., Chan K.M., Kinematics analysis of ankle inversion ligamentous sprain injuries in sports: 2 cases during the 2008 Beijing Olympics, American Journal of Sports Medicine, 39, pp. 1548-1552, (2011); Nauck T., Lohrer H., Translation, cross-cultural adaption and validation of the German version of the Foot and Ankle Ability Measure for patients with chronic ankle instability, British Journal of Sports Medicine, 45, pp. 785-790, (2011); Reinschmidt C., Stacoff A., Stussi E., Heel movement within a court shoe, Medicine and Science in Sports and Exercise, 24, pp. 1390-1395, (1992); Wu G., Siegler S., Allard P., Kirtley C., Leardini A., Rosenbaum D., Whittle M., D'Lima D., Cristofolini L., Witte H., Schmid O., Stokes I., ISB recommendation on definitions of joint coordinate system of various joints for the reporting of human joint motion-part I: ankle, hip, and spine, Journal of Biomechanics, 35, pp. 543-548, (2002); Wu G., Cavanagh P., ISB recommendations for standardization in the reporting of kinematic data, Journal of Biomechanics, 28, pp. 1257-1261, (1995)","D. Gehring; Department of Sport and Sport Science, University of Freiburg, 79117 Freiburg, Schwarzwaldstrasse 175, Germany; email: dominic.gehring@sport.uni-freiburg.de","","","18732380","","JBMCB","23078945","English","J. Biomech.","Article","Final","","Scopus","2-s2.0-84871429940" "Fleming P.","Fleming, P. (7201957030)","7201957030","Artificial turf systems for sport surfaces: Current knowledge and research needs","2011","Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","225","2","","43","64","21","66","10.1177/1754337111401688","https://www.scopus.com/inward/record.uri?eid=2-s2.0-80054860627&doi=10.1177%2f1754337111401688&partnerID=40&md5=93c4fe48113d690d5b3961565f821b34","Civil and Building Engineering Department, Loughborough University, Loughborough, Leics LE11 3TU, United Kingdom","Fleming P., Civil and Building Engineering Department, Loughborough University, Loughborough, Leics LE11 3TU, United Kingdom","Artificial sport surfaces, for team outdoor sports, are growing in number in many sports including soccer (association football), rugby, hockey, and football (American and Australian). The science of their behaviour has, it is argued, been under-researched in comparison to the development of artificial turf products and also the development of many of the sports with respect to athleticism and advances in equipment such as footwear. This paper reviews artificial turf design requirements and behavioural aspects to develop the science, and draws from a range of up-to-date literature to identify the key principles of behaviour and gaps in knowledge. The relationship between the material types used in the substrate support and surface system (comprising some form of shockpad and turf, the turf infilled or unfilled) behaviour is demonstrated in regard to the key performance factors of player-surface interaction - for both impact and traction. The data demonstrate the relatively complex behaviour of surface systems, and highlight the pitfalls of current simple mechanical tests in relation to human loading. Degradation and the role of maintenance to sustain longterm performance are issues also highlighted and discussed. Surface safety is discussed through a short review of studies related to injury risk, albeit most were associated with the contrast between natural turf and artificial turf; however, there is clearly more research required in injury surveillance to include aspects of objective surface measurement. This paper additionally provides the reader with a state-of-the-knowledge review of where current thinking is now, and where future research is considered to be of merit, in developing sport surface science.","Artificial; Biomechanics; Durability; Impact; Injury; Maintenance; Materials; Measurement; Player loading; Safety; Sport surfaces; Testing; Traction","Biomechanics; Ice control; Maintenance; Research; Surface measurement; Surfaces; Traction (friction); Artificial; Impact; Injury; Player loading; Sport surfaces; Behavioral research","Surfaces for Sports Areas - Indoor Surfaces for Multi-sports Use-specification, (2006); James I.T., Maintenance of performance in synthetic turf surfaces, SportSURF Seminar Maintaining Performance of Synthetic Surfaces, (2009); Twomey D., Challenges in the development of criteria for synthetic turf for Australian football and cricket, Proceedings of the Second International Conference on Science, Technology and Research in Sport Surfaces, (2010); Europe's Synthetic Turf Industry Hits 25 Million Square Metres per Year Target, (2009); BS 7044-1:1990 Artificial Sports Surfaces - Classification and General Introduction. 6 Sport and Play Construction Association (SAPCA). The SAPCA Code of Practice for the Construction and Maintenance of Synthetic Turf Sports Pitches, Third Edition, (2009); Selecting the Right Artificial Surface for Hockey, Football, Rugby League and Rugby Union, (2010); Surfaces for Sports Areas - Synthetic Turf and Needle-punched Surfaces Primarily Designed for Outdoor Use - Part 1: Specification for Synthetic Turf, (2007); FIFA Quality Concept for Football Turf, (2009); Shorten M.R., Sports surfaces and injury: The missing link, Proceedings of the Second International Conference on Science, Technology and Research in Sport Surfaces, (2010); Standard Relating to the Use of Artificial Rugby Turf, International Rugby Board, (2008); Alcantara E., Gamez J., Rosa D., Sanchis M., Analysis of the influence of rubber infill morphology on the mechanical performance of artificial turf surfaces for soccer, J. Sports Engng Technol., 223, pp. 1-9, (2008); Sport England Supported Website Describing the Location of Community Use Sporting Facilities Across England; Website of the Research Network Sport- SURF; Handbook of Performance Requirements for Synthetic Hockey Pitches, (2008); Severn K., Fleming P.R., Dixon N., James I., Temporal and spatial investigations on water based hockey fields, Proceedings of the Second International Conference on Science, Technology and Research in Sport Surfaces, (2010); McLeod A., The Management and Maintenance of Second Generation Sand-filled Synthetic Sports Pitches, (2008); Fleming P., Maintenance best practice and recent esearch, Proceedings of the Second International Conference on Science, Technology and Research in Sport Surfaces, (2010); James I.T., McLeod A., IOG Guidelines for the Maintaining Synthetic Turf: Sand Filled Systems, (2008); Young C., Performance of Water-based Hockey Pitches, (2006); Jan-Kieft G., Quality monitoring of 50 artificial turf football fields - A study of the correlation between field properties, usage and maintenance, SportSURF Seminar Maintaining Performance of Synthetic Surfaces, (2009); Angermann A., Bauer R., Nossek G., Zimmermann N., Injuries in the European Union - Statistics Summary 2003-2005 Featuring the EU Injury Database (IDB), pp. 7-12, (2007); Finch C., Sport and active recreation injuries in Australia: Evidence from emergency department presentations, British Journal of Sports Medicine, 32, 3, pp. 220-225, (1998); Fuller C.W., Ekstrand J., Junge A., Andersen T.E., Bahr R., Dvorak J., Hagglund M., McCrory P., Meeuwisse W.H., Consensus statement on injury definitions and data collection procedures in studies of football (soccer) injuries, British Journal of Sports Medicine, 40, 3, pp. 193-201, (2006); Fuller C.W., Molloy M.G., Bagate C., Bahr R., Brooks J.H.M., Donson H., Kemp S.P.T., McCrory P., McIntosh A.S., Meeuwisse W.H., Quarrie K.L., Raftery M., Wiley P., Consensus statement on injury definitions and data collection procedures for studies of injuries in rugby union, British Journal of Sports Medicine, 41, 5, pp. 328-331, (2007); Fuller C.W., Dick R.W., Corlette J., Schmalz R., Comparison of the incidence, nature and cause of injuries sustained on grass and new generation artificial turf by male and female football players. Part 1: Match injuries, Br. J. Sports Med., 41, pp. 120-126, (2007); Fuller C.W., Dick R.W., Corlette J., Schmalz R., Comparison of the incidence, nature and cause of injuries sustained on grass and new generation artificial turf by male and female football players. Part 2: Training injuries, Br. J. Sports Med., 41, pp. 127-132, (2007); Dvorak J., Junge A., Grimm K., Kirkendall D., Medical report from the 2006 FIFA World Cup Germany, British Journal of Sports Medicine, 41, 9, pp. 578-581, (2007); Junge A., Dvorak J., Graf-Baumann T., Football injuries during the World Cup 2002, Am. J. Sports Med., 32, 1, pp. 2-7, (2004); Ekstrand J., Timpka T., Hagglund M., Risk of injury in elite football played on artificial turf versus natural grass: A prospective two-cohort study, British Journal of Sports Medicine, 40, 12, pp. 975-980, (2006); Meyers M.C., Barnhill B.S., Incidence, causes, and severity of high school football injuries on FieldTurf versus natural grass: A 5-year prospective study, American Journal of Sports Medicine, 32, 7, pp. 1626-1638, (2004); Orchard J.W., Chivers I., Aldous D., Bennell K., Seward H., Rye grass is associated with fewer non-contact anterior cruciate ligament injuries than bermuda grass, British Journal of Sports Medicine, 39, 10, pp. 704-709, (2005); Twomey D., Is there a link between injury and ground conditions? 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Sports Engng Technol., 223, 1, pp. 11-19, (2009); Villwock M.R., Meyer E.G., Powell J.W., Fouty A.J., Haut R.C., Football playing surface and shoe design affect rotational traction, Am. J. Sports Med., 37, 3, pp. 518-525, (2009); Livesay G.A., Reda D.R., Nauman E.A., Peak torque and rotational stiffness developed at the shoe-surface interface, Am. J. Sports Med., 34, pp. 415-422, (2006); Drakos M.C., Hillstrom H., The effect of shoe-surface interface in the development of anterior cruciate ligament strain, Trans. ASME, J. Biomech. Engng, 132, (2010); Severn K., Fleming P., Dixon N., Science of synthetic turf surfaces: Player-surface interactions, Sports Technol., 3, 1, pp. 13-25, (2010); Fujikake K., Yamamoto T., Takemura M., A comparison of the mechanical characteristics of natural turf and artificial turf football pitches, Football Sci., 4, pp. 1-8, (2007); Kirk R.F., Carre M.J., High-speed observations of football boot surface interactions of players in their natural environment, Sports Engng, 10, 3, pp. 129-144, (2007); Fleming P.R., Young C., Roberts J.R., Jones R., Dixon N., Human perceptions of artificial surfaces for field hockey, Sports Engng, 8, 3, pp. 121-136, (2005); Dixon S.J., Collop A.C., Batt M.E., Surface effects on ground reaction forces and lower extremity kinematics in running, Med. Sci. Sports Exerc., 32, 11, pp. 1919-1926, (2000); James I.T., Advancing natural turf to meet tomorrow's challenges, Proceedings of the Second International Conference on Science, Technology and Research in Sport Surfaces, (2010); Bartlett M.D., James I.T., Are golf courses a source or sink of atmospheric CO2: A modelling approach, Proceedings of the Second International Conference on Science, Technology and Research in Sport Surfaces, (2010)","P. Fleming; Civil and Building Engineering Department, Loughborough University, Loughborough, Leics LE11 3TU, United Kingdom; email: p.r.fleming@lboro.ac.uk","","SAGE Publications Ltd","17543371","","","","English","Proc. Inst. Mech. Eng. Part P J. Sports Eng. Technol.","Article","Final","","Scopus","2-s2.0-80054860627" "Jia Y.C.; Davids K.; Button C.; Koh M.","Jia, Yi Chow (12776077700); Davids, Keith (7003449117); Button, Chris (59046555500); Koh, Michael (7103399995)","12776077700; 7003449117; 59046555500; 7103399995","Variation in coordination of a discrete multiarticular action as a function of skill level","2007","Journal of Motor Behavior","39","6","","463","479","16","52","10.3200/JMBR.39.6.463-480","https://www.scopus.com/inward/record.uri?eid=2-s2.0-36349032712&doi=10.3200%2fJMBR.39.6.463-480&partnerID=40&md5=78f72b1496a781d3e322fc27fe20f6d3","Physical Education and Sports Science, National Institute of Education, Singapore, Singapore; School of Physical Education, University of Otago, New Zealand; School of Human Movement Studies, Queensland University of Technology, Australia; School of Sports, Health and Leisure Republic Polytechnic, Singapore, Singapore; Physical Education and Sports Science, National Institute of Education, Nanyang Technological University, Singapore 537616, 1 Nanyang Walk, Singapore","Jia Y.C., Physical Education and Sports Science, National Institute of Education, Singapore, Singapore, School of Physical Education, University of Otago, New Zealand, Physical Education and Sports Science, National Institute of Education, Nanyang Technological University, Singapore 537616, 1 Nanyang Walk, Singapore; Davids K., School of Human Movement Studies, Queensland University of Technology, Australia; Button C., School of Physical Education, University of Otago, New Zealand; Koh M., School of Sports, Health and Leisure Republic Polytechnic, Singapore, Singapore","The authors investigated coordination modes that emerged as a function of the interaction between skill level and task constraints in a multiarticular kicking action. Five skilled, 5 intermediate, and 5 novice participants attempted to satisfy specific height and accuracy constraints in kicking a ball over a barrier. Skilled and intermediate groups demonstrated a functional coordination mode involving less joint involvement at the proximal joints and greater joint involvement at distal joints, mimicking a chip-like action in soccer. Conversely, the novice group tended to produce larger ranges of motion throughout the kicking limb in a driving-like kicking action. Key differences were also found for task outcome scores, joint angle-angle relations, and ball-trajectory plots between the skilled and intermediate groups and the novice group. Findings from this study demonstrated that joint involvement during this discrete multiarticular action is a function of skill level and task constraints rather than a consequence of a global freezing-freeing strategy suggested in some previous research. The authors also highlight the merit of using a model of the acquisition of coordination in examining how coordination modes for multiarticular actions differ as a function of skill. Copyright © 2007 Heldref Publications.","Coordination; Discrete multiarticular actions; Skill level; Task constraints","Adult; Analysis of Variance; Athletic Performance; Biomechanics; Humans; Joints; Kinesthesis; Lower Extremity; Male; Movement; Practice (Psychology); Psychomotor Performance; Range of Motion, Articular; Reference Values; Soccer; accuracy; adult; angle angle plot; article; ball trajectory plot; controlled study; discrete multiarticular action; height; human; human experiment; joint; kicking; learning; male; motor coordination; motor performance; normal human; parameter; range of motion; skill; sport; task constraint; task performance","Anderson D.I., Sidaway B., Coordination changes associated with practice of a soccer kick, Research Quarterly for Exercise and Sport, 65, pp. 93-99, (1994); Arutyunyan G.H., Gurfinkel V.S., Mirskii M.L., Organization of movements on execution by man of an exact postural task, Biophysics, 14, pp. 1162-1167, (1969); Balasubramaniam R., Turvey M.T., Coordination modes in the multisegmental dynamics of hula hooping, Biological Cybernetics, 90, pp. 176-190, (2004); Beek P.J., van Santvoord A.A.M., Learning the cascade juggle: A dynamical systems analysis, Journal of Motor Behavior, 24, pp. 85-94, (1992); Bernstein N.A., The control and regulation of movements, (1967); Bober T., Putnam G., Woodworm G., Factors influencing the angular velocity of a human limb segment, Journal of Biomechanics, 29, pp. 511-521, (1987); Button C., McLeod M., Sanders R., Coleman S., Examining movement variability in the basketball free-throw action at different skill levels, Research Quarterly for Exercise and Sport, 74, pp. 257-269, (2003); Button C., Smith J., Pepping G.-J., The influential role of task constraints in acquiring football skills, Science and football V, pp. 481-489, (2005); Carre M.J., Asai T., Akatsuka T., Haake S.J., The curve kick of a football. II: Flight through the air, Sports Engineering, 5, pp. 193-200, (2002); Chen H.H., Liu Y.T., Mayer-Kress G., Newell K.M., Learning the pedalo locomotion task, Journal of Motor Behavior, 37, pp. 247-256, (2005); Cohen J., Statistical power analysis for the behavioural sciences, (1988); Dounskaia N., Ketcham C.J., Stelmach G.E., Commonalities and differences in control of various drawing movements, Experimental Brain Research, 146, pp. 11-25, (2002); Dounskaia N., Van Gemmert A.W.A., Stelmach G.E., Interjoint coordination during handwriting-like movements, Experimental Brain Research, 135, pp. 127-140, (2000); Haibach P.S., Daniels G.L., Newell K.M., Coordination changes in the early stages of learning to cascade juggle, Human Movement Science, 23, pp. 185-206, (2004); Hamill J., Haddad J.M., Heiderscheit B.C., van Emmerik R.E.A., Li L., Clinical relevance of variability in coordination, Movement system variability, pp. 153-165, (2006); Hargreaves A., Skills and strategies for coaching soccer, (1990); Hodges N.J., Hayes S., Horn R.R., Williams A.M., Changes in co-ordination, control and outcome as a result of extended practice on a novel motor skill, Ergonomics, 48, pp. 1672-1685, (2005); Hong S.L., Newell K.M., Practice effects on local and global dynamics of the ski-simulator task, Experimental Brain Research, 169, pp. 350-360, (2006); Huys R., Daffertshofer A., Beek P.J., Emergence of sport skills under constraint, Skill acquisition in sport: Research, theory and practice, pp. 351-373, (2004); Ko Y.-G., Challis J.H., Newell K.M., Learning to coordinate redundant degrees of freedom in a dynamic balance task, Human Movement Science, 22, pp. 47-66, (2003); Kudo K., Tsutsui S., Ishikura T., Ito T., Yamamoto Y., Compensatory coordination of release parameters in a throwing task, Journal of Motor Behavior, 32, pp. 337-345, (2000); Lees A., Davids K., Co-ordination and control of kicking in soccer, Interceptive actions in sport. Information and movement, pp. 273-287, (2002); Mullineaux D.R., Bartlett R.M., Bennett S., Research design and statistics in biomechanics and motor control, Journal of Sports Sciences, 19, pp. 739-760, (2001); Muller H., Sternad D., Decomposition of variability in the execution of goal-oriented tasks: Three components of skill improvement, Journal of Experimental Psychology: Human Perception and Performance, 30, pp. 212-233, (2004); Newell K.M., Coordination, control and skill, Differing perspectives in motor learning, memory, and control, pp. 295-317, (1985); Newell K.M., Broderick M.P., Deutsch M., Slifkin A.B., Task goals and change in dynamical degrees of freedom with motor learning, Journal of Experimental Psychology: Human Perception and Performance, 29, pp. 379-387, (2003); Putnam C.A., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Medicine and Science in Sports and Exercise, 23, pp. 130-144, (1991); Riley M.A., Turvey M.T., Variability and determinism in motor behavior, Journal of Motor Behavior, 34, pp. 99-125, (2002); Schaal S., Sternad D., Osu R., Kawato M., Rhythmic arm movement is not discrete, Nature Neuroscience, 7, pp. 1025-1026, (2004); Scholz J.P., Danion F., Latash M.L., Schoner G., Understanding finger coordination through analysis of the structure of force variability, Biological Cybernetics, 86, pp. 29-39, (2002); Schoner G., A dynamic theory of coordination of discrete movement, Biological Cybernetics, 63, pp. 257-270, (1990); Sidaway B., Heise G., Schoenfelder-Zohdi B., Quantifying the variability of angle-angle plots, Journal of Human Movement Studies, 29, pp. 181-197, (1995); Vereijken B., van Emmerik R.E.A., Whiting H.T.A., Newell K.M., Free(z)ing degrees of freedom in skill acquisition, Journal of Motor Behavior, 24, pp. 133-142, (1992); Williams A.M., Davids K., Williams J.G., Visual perception and action in sport, (1999); Young R.P., Marteniuk R.G., Stereotypic muscle-torque patterns are systematically adopted during acquisition of a multi-articular kicking task, Journal of Biomechanics, 31, pp. 809-816, (1998)","Y.C. Jia; Physical Education and Sports Science, National Institute of Education, Nanyang Technological University, Singapore 537616, 1 Nanyang Walk, Singapore; email: jiayi.chow@nie.edu.sg","","","00222895","","JMTBA","18055353","English","J. Mot. Behav.","Article","Final","","Scopus","2-s2.0-36349032712" "O’Kane J.W.; Neradilek M.; Polissar N.; Sabado L.; Tencer A.; Schiff M.A.","O’Kane, John W. (55990120700); Neradilek, Moni (35797267200); Polissar, Nayak (7004531027); Sabado, Lori (57191358513); Tencer, Allan (7005320596); Schiff, Melissa A. (7102067342)","55990120700; 35797267200; 7004531027; 57191358513; 7005320596; 7102067342","Risk factors for lower extremity overuse injuries in female youth soccer players","2017","Orthopaedic Journal of Sports Medicine","5","10","2325967117733963","","","","47","10.1177/2325967117733963","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85032964228&doi=10.1177%2f2325967117733963&partnerID=40&md5=e3f39ada7438965ae8c37d4ed2583bd6","Department of Family Medicine and Orthopedics and Sports Medicine, University of Washington, School of Medicine, Seattle, WA, United States; The Mountain-Whisper-Light Statistics, Seattle, WA, United States; Harborview Injury Prevention and Research Center, Seattle, WA, United States; Department of Epidemiology, University of Washington, School of Public Health, Seattle, WA, United States","O’Kane J.W., Department of Family Medicine and Orthopedics and Sports Medicine, University of Washington, School of Medicine, Seattle, WA, United States; Neradilek M., The Mountain-Whisper-Light Statistics, Seattle, WA, United States; Polissar N., The Mountain-Whisper-Light Statistics, Seattle, WA, United States; Sabado L., Department of Family Medicine and Orthopedics and Sports Medicine, University of Washington, School of Medicine, Seattle, WA, United States; Tencer A., Department of Family Medicine and Orthopedics and Sports Medicine, University of Washington, School of Medicine, Seattle, WA, United States; Schiff M.A., Harborview Injury Prevention and Research Center, Seattle, WA, United States, Department of Epidemiology, University of Washington, School of Public Health, Seattle, WA, United States","Background: Youth soccer injuries are common and of increasing concern, with sport specialization occurring at younger ages. Limited research is available regarding overuse injuries and risk factors in young female athletes. Purpose: To identify the number and rate of overuse injuries in female soccer players (ages 12-15 years), describe the anatomic location and type of injury, and evaluate contributing risk factors. Study Design: Case-control study; Level of evidence, 3. Methods: A total of 351 female youth soccer players, ages 12 to 15 years, from Washington State were evaluated from 2008 to 2012. Players with lower extremity overuse injuries were identified through weekly emails and were interviewed by telephone to obtain data on injury type and body region. We evaluated the association between overuse injuries and preseason risk factors, including joint hypermobility, hip and knee muscle strength, and jump biomechanics, using Poisson regression to estimate relative risk (RR) and 95% CIs. Results: The incidence rate for first-time lower extremity overuse injuries was 1.7 per 1000 athlete-exposure hours (AEH; 95% CI, 1.4-2.2), and that for repeat injuries was 3.4 per 1000 AEH (95% CI, 2.1-5.6). Knee injuries accounted for 47% of overuse injuries. Increased valgus was associated with a 3.2-fold increased risk (95% CI, 1.52-6.71) for knee injury. A 1-standard deviation (SD) increase in hamstring strength was associated with a 35% decreased risk (RR, 0.65; 95% CI, 0.46-0.91) for overuse knee injuries, and a 1-SD increase in quadriceps strength was associated with a 30% decreased risk (RR, 0.70; 95% CI, 0.50-0.98). A 1-SD increase in hip flexor strength was associated with a 28% decreased risk (RR, 0.72; 95% CI, 0.51-1.00) for overuse knee injuries, and a 1-SD increase in external rotation strength was associated with a 35% decreased risk (RR, 0.65; 95% CI, 0.46-0.91). Playing on more than 1 soccer team was associated with a 2.5-fold increased risk (95% CI, 1.08-5.35) for overuse knee injuries, and participating in other physical activities was associated with a 61% decreased risk (odds ratio, 0.39; 95% CI, 0.15-0.81). Conclusion: In this study, lower extremity overuse injuries in female youth soccer players affected primarily the knee. Lower knee separation distance, decreased lower extremity strength, and playing on more than 1 soccer team increased injury risk. © The Author(s) 2017.","Female athlete; Knee injury; Overuse injury; Soccer; Youth sports","adolescent; Article; biomechanics; case control study; child; cohort analysis; cumulative trauma disorder; disease association; drop jump test; female; flexor muscle; hamstring muscle; hip and knee muscle strength; human; joint laxity; jumping; knee injury; leg injury; lower extremity overuse injury; lower limb; muscle strength; musculoskeletal disease assessment; Osgood Schlatter disease; patellofemoral pain syndrome; periarticular joint disease; physical activity; priority journal; prospective study; quadriceps femoris muscle; quadriceps tendon; risk factor; school child; soccer player; tendinitis; valgus knee; youth sport","Baxter-Jones A., Maffulli N., Helms P., Low injury rates in elite athletes, Arch Dis Child, 68, 1, pp. 130-132, (1993); Beighton P., Solomon L., Soskolne C.L., Articular mobility in an African population, Ann Rheum Dis, 32, 5, pp. 413-418, (1973); Clarsen B., Myklebust G., Bahr R., Development and validation of a new method for the registration of overuse injuries in sports injury epidemiology: The Oslo Sports Trauma Research Centre (OSTRC) Overuse Injury Questionnaire, Br J Sports Med, 47, pp. 495-502, (2013); Dallinga J.M., Benjaminse A., Lemmink K.A., Which screening tools can predict injury to the lower extremities in team sports? 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A retrospective 12-month study, Scand J Med Sci Sports, 20, 3, pp. 384-393, (2010); Roos K.G., Marshall S.W., Definition and usage of the term “overuse injury” in the US high school and collegiate sport epidemiology literature: A systematic review, Sports Med, 44, 3, pp. 405-421, (2014); Schiff M.A., Mack C.D., Polissar N.L., Levy M.R., Dow S.P., O'Kane J.W., Soccer injuries in female youth players: Comparison of injury surveillance by certified athletic trainers and internet, J Athl Train, 45, 3, pp. 238-242, (2010); Soderman K., Adolphson J., Lorentzon R., Alfredson H., Injuries in adolescent female players in European football: A prospective study over one outdoor soccer season, Scand J Med Sci Sports, 11, 5, pp. 299-304, (2001); Stracciolini A., Yen Y.M., d'Hemecourt P.A., Lewis C.L., Sugimoto D., Sex and growth effect on pediatric hip injuries presenting to sports medicine clinic, J Pediatr Orthop B, 25, 4, pp. 315-321, (2016); Tegnander A., Olsen O.E., Moholdt T.T., Engebretsen L., Bahr R., Injuries in Norwegian female elite soccer: A prospective one-season cohort study, Knee Surg Sports Traumatol Arthrosc, 16, 2, pp. 194-198, (2008); Key statistics, (2016); van der Sluis A., Elferink-Gemser M.T., Brink M.S., Visscher C., Importance of peak height velocity timing in terms of injuries in talented soccer players, Int J Sports Med, 36, 4, pp. 327-332, (2015); Woods C., Hawkins R., Hulse M., Hodson A., The Football Association Medical Research Programme: An audit of injuries in professional football-analysis of preseason injuries, Br J Sports Med., 36, 6, pp. 436-441, (2002)","J.W. O’Kane; UWMC Stadium Sports Medicine Clinic, Seattle, 3800 Montlake Blvd NE, Box 354060, 98195, United States; email: jokane@uw.edu","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85032964228" "Kim J.H.; Lee K.-K.; Kong S.J.; An K.O.; Jeong J.H.; Lee Y.S.","Kim, Jin Hyun (42661621500); Lee, Ki-Kwang (55799131000); Kong, Se Jin (56364403700); An, Keun Ok (35315580600); Jeong, Jin Hwa (59036237100); Lee, Yong Seuk (34872499400)","42661621500; 55799131000; 56364403700; 35315580600; 59036237100; 34872499400","Effect of anticipation on lower extremity biomechanics during side-and cross-cutting maneuvers in young soccer players","2014","American Journal of Sports Medicine","42","8","","1985","1992","7","54","10.1177/0363546514531578","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84907189235&doi=10.1177%2f0363546514531578&partnerID=40&md5=ca13f19f1392701cb222128fb7fe2355","School of Sports Science, Kookmin University, Seoul, South Korea; DooRee System, Seongam, South Korea; Department of Kinesiologic Medical Science, Dankook University, Cheonan, South Korea; Department of Orthopaedic Surgery, Seoul National University College of Medicine, Bundang Hospital, Seongnam-si, South Korea","Kim J.H., School of Sports Science, Kookmin University, Seoul, South Korea; Lee K.-K., School of Sports Science, Kookmin University, Seoul, South Korea; Kong S.J., DooRee System, Seongam, South Korea; An K.O., Department of Kinesiologic Medical Science, Dankook University, Cheonan, South Korea; Jeong J.H., Department of Orthopaedic Surgery, Seoul National University College of Medicine, Bundang Hospital, Seongnam-si, South Korea; Lee Y.S., Department of Orthopaedic Surgery, Seoul National University College of Medicine, Bundang Hospital, Seongnam-si, South Korea","Background: Less mature athletes exhibit biomechanical parameters during cutting maneuvers that may place these athletes at greater risk for injury than their more mature counterparts, especially if the maneuvers are unanticipated. However, most studies on risk factors for anterior cruciate ligament (ACL) injury have focused on neuromuscular and knee kinematic differences between the sexes, not on the biomechanical parameters between specific sporting maneuvers.; Hypotheses: (1) Anticipation will have a greater effect than the type of cutting maneuver (side-vs cross-cutting) in terms of the biomechanical risk factors for ACL injuries, and (2) the biomechanical risk factors will be different between the 2 types of maneuvers.; Study Design: Controlled laboratory study.; Methods: Thirty-seven young, male middle school soccer players participated in this study. Three-dimensional motion analysis featuring ground-reaction force and electromyography of the right leg was used. Kinematics, kinetics, and electromyography data for each athlete were analyzed during anticipated and unanticipated side-and cross-cutting maneuvers. The differences between anticipated and unanticipated states as well as between side-and cross-cutting maneuvers were calculated and compared.; Clinical Relevance: Increases in the valgus angle and moment of the knee joint and higher lateral gastrocnemius activity during the late period showed an association with ACL injury risk factors during side-cutting, and higher lateral gastrocnemius activity during the early period showed an association with injury risk factors during cross-cutting.; Results: After unanticipated side-cutting, the time to peak ground-reaction force was longer and peak values were smaller compared with anticipated side-cutting. Flexion, valgus, and internal rotations in the knee joint were larger, and greater flexion and valgus moments were observed. The vastus lateralis and vastus medialis showed lower activity, and the lateral gastrocnemius showed higher activity after unanticipated side-cutting maneuvers. With unanticipated cross-cutting, the time to peak groundreaction force was longer and peak values were smaller compared with anticipated cross-cutting, and the lateral gastrocnemius showed higher activity. Differences in the peak values of the mediolateral and vertical forces were smaller in the cross-cutting maneuver than in side-cutting. Changes in flexion and adduction of the hip joint, flexion of the knee joint, and inversion of the ankle joint were larger during side-cutting.; Conclusion: Although there were some interactions between direction and anticipation, anticipating a cutting maneuver generally had a greater effect than the type of maneuver when there was no significant interaction. © 2014 The Author.","biomechanics; cross-cutting; lower extremity; side-cutting; soccer","Adolescent; Anterior Cruciate Ligament; Anticipation, Psychological; Biomechanical Phenomena; Electromyography; Humans; Knee Injuries; Lower Extremity; Male; Motor Skills; Muscle, Skeletal; Range of Motion, Articular; Risk Factors; Rotation; Soccer; Time and Motion Studies; adolescent; anterior cruciate ligament; anticipation; biomechanics; electromyography; human; injuries; joint characteristics and functions; Knee Injuries; leg; male; motor performance; pathophysiology; physiology; psychology; risk factor; rotation; skeletal muscle; soccer; task performance","Agel J., Palmieri-Smith R.M., Dick R., Descriptive epidemiology of collegiate women's volleyball injuries: National Collegiate Athletic Association Injury Surveillance System, 1988-1989 through 2003-2004, J Athl Train, 42, pp. 295-302, (2007); Alentorn-Geli E., Myer G.D., Silvers H.J., Prevention of non-contact anterior cruciate ligament injuries in soccer players, part 2: A review of prevention programs aimed to modify risk factors and to reduce injury rates, Knee Surg Sports Traumatol Arthrosc, 17, pp. 859-879, (2009); Arms S.W., Pope M.H., Johnson R.J., The biomechanics of anterior cruciate ligament rehabilitation and reconstruction, Am J Sports Med, 12, pp. 8-18, (1984); Beaulieu M.L., Lamontagne M., Xu L., Gender differences in time-frequency EMG analysis of unanticipated cutting maneuvers, Med Sci Sports Exerc, 40, pp. 1795-1804, (2008); Beaulieu M.L., Lamontagne M., Xu L., Lower limb muscle activity and kinematics of an unanticipated cutting manoeuvre: A gender comparison, Knee Surg Sports Traumatol Arthrosc, 17, pp. 968-976, (2009); Besier T.F., Lloyd D.G., Ackland T.R., Anticipatory effects on knee joint loading during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1176-1181, (2001); Boden B.P., Dean G.S., Feagin J.A., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Boden B.P., Griffin L.Y., Garrett W.E., Etiology and prevention of noncontact ACL injury, Phys Sportsmed, 28, pp. 53-60, (2000); Borotikar B.S., Newcomer R., Koppes R., Combined effects of fatigue and decision making on female lower limb landing postures: Central and peripheral contributions to ACL injury risk, Clin Biomech (Bristol, Avon), 23, pp. 81-92, (2008); Chappell J.D., Yu B., Kirkendall D.T., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am J Sports Med, 30, pp. 261-267, (2002); Fleming B.C., Renstrom P.A., Ohlen G., The gastrocnemius muscle is an antagonist of the anterior cruciate ligament, J Orthop Res, 19, pp. 1178-1184, (2001); Gainey J.C., Kadaba M.P., Wootten M.E., Gait analysis of patients who have Paget disease, J Bone Joint Surg Am, 71, pp. 568-579, (1989); Houck J.R., Duncan A., De Haven K.E., Comparison of frontal plane trunk kinematics and hip and knee moments during anticipated and unanticipated walking and side step cutting tasks, Gait Posture, 24, pp. 314-322, (2006); Kadaba M.P., Ramakrishnan H.K., Wootten M.E., Measurement of lower extremity kinematics during level walking, J Orthop Res, 8, pp. 383-392, (1990); Ladenhauf H.N., Graziano J., Marx R.G., Anterior cruciate ligament prevention strategies: Are they effective in young athletes -current concepts and review of literature, Curr Opin Pediatr, 25, pp. 64-71, (2013); Landry S.C., McKean K.A., Hubley-Kozey C.L., Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated side-cut maneuver, Am J Sports Med, 35, pp. 1888-1900, (2007); Landry S.C., McKean K.A., Hubley-Kozey C.L., Gender differences exist in neuromuscular control patterns during the pre-contact and early stance phase of an unanticipated side-cut and cross-cut maneuver in 15-18 years old adolescent soccer players, J Electromyogr Kinesiol, 19, pp. 370-e379, (2009); Lephart S.M., Ferris C.M., Riemann B.L., Gender differences in strength and lower extremity kinematics during landing, Clin Orthop Relat Res, 401, pp. 162-169, (2002); Lim B.O., Lee Y.S., Kim J.G., Effects of sports injury prevention training on the biomechanical risk factors of anterior cruciate ligament injury in high school female basketball players, Am J Sports Med, 37, pp. 1728-1734, (2009); Lohmander L.S., Ostenberg A., Englund M., High prevalence of knee osteoarthritis, pain, and functional limitations in female soccer players twelve years after anterior cruciate ligament injury, Arthritis Rheum, 50, pp. 3145-3152, (2004); Mache M.A., Hoffman M.A., Hannigan K., Et al., Effects of decision making on landing mechanics as a function of task and sex, Clin Biomech (Bristol, Avon), 28, pp. 104-109, (2013); Malinzak R.A., Colby S.M., Kirkendall D.T., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech (Bristol, Avon), 16, pp. 438-445, (2001); Markolf K.L., Burchfield D.M., Shapiro M.M., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, pp. 930-935, (1995); Markolf K.L., O'Neill G., Jackson S.R., Effects of applied quadriceps and hamstrings muscle loads on forces in the anterior and posterior cruciate ligaments, Am J Sports Med, 32, pp. 1144-1149, (2004); Myer G.D., Sugimoto D., Thomas S., The influence of age on the effectiveness of neuromuscular training to reduce anterior cruciate ligament injury in female athletes: A meta-analysis, Am J Sports Med, 41, pp. 203-215, (2013); O'Connor J.J., Can muscle co-contraction protect knee ligaments after injury or repair?, J Bone Joint Surg Br, 75, pp. 41-48, (1993); Olsen O.E., Myklebust G., Engebretsen L., Relationship between floor type and risk of ACL injury in team handball, Scand J Med Sci Sports, 13, pp. 299-304, (2003); Sigward S.M., Pollard C.D., Havens K.L., Influence of sex and maturation on knee mechanics during side-step cutting, Med Sci Sports Exerc, 44, pp. 1497-1503, (2012); Sigward S.M., Powers C.M., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clin Biomech (Bristol, Avon), 21, pp. 41-48, (2006)","","","SAGE Publications Inc.","03635465","","AJSMD","24787044","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-84907189235" "Read P.J.; Oliver J.L.; De Ste Croix M.B.A.; Myer G.D.; Lloyd R.S.","Read, Paul J. (55764420600); Oliver, Jon L. (7401628051); De Ste Croix, Mark B.A. (6603255583); Myer, Gregory D. (6701852696); Lloyd, Rhodri S. (24460583700)","55764420600; 7401628051; 6603255583; 6701852696; 24460583700","Reliability of the Tuck Jump Injury Risk Screening Assessment in Elite Male Youth Soccer Players","2016","Journal of Strength and Conditioning Research","30","6","","1510","1516","6","41","10.1519/JSC.0000000000001260","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84973377115&doi=10.1519%2fJSC.0000000000001260&partnerID=40&md5=124f134a56befb351baf14189c6c690f","School of Sport, Health and Applied Science, St Mary's University, London, United Kingdom; Youth Physical Development Unit, School of Sport, Cardiff Metropolitan University, Cardiff, United Kingdom; Exercise and Sport Research Centre, School of Sport and Exercise, University of Gloucestershire, Gloucester, United Kingdom; Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Department of Pediatrics and Orthopaedic Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH, United States; Micheli Center for Sports Injury Prevention, Boston, MA, United States; Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand; Department of Orthopaedics, University of Pennsylvania, Philadelphia, PA, United States","Read P.J., School of Sport, Health and Applied Science, St Mary's University, London, United Kingdom; Oliver J.L., Youth Physical Development Unit, School of Sport, Cardiff Metropolitan University, Cardiff, United Kingdom, Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand; De Ste Croix M.B.A., Exercise and Sport Research Centre, School of Sport and Exercise, University of Gloucestershire, Gloucester, United Kingdom; Myer G.D., Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Department of Pediatrics and Orthopaedic Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH, United States, Micheli Center for Sports Injury Prevention, Boston, MA, United States, Department of Orthopaedics, University of Pennsylvania, Philadelphia, PA, United States; Lloyd R.S., Youth Physical Development Unit, School of Sport, Cardiff Metropolitan University, Cardiff, United Kingdom, Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand","Read, PJ, Oliver, JL, de Ste Croix, MBA, Myer, GD, and Lloyd, RS. Reliability of the tuck jump injury risk screening assessment in elite male youth soccer players. J Strength Cond Res 30(6): 1510-1516, 2016 - Altered neuromuscular control has been suggested as a mechanism for injury in soccer players. Ligamentous injuries most often occur during dynamic movements, such as decelerations from jump-landing maneuvers where high-risk movement patterns are present. The assessment of kinematic variables during jump-landing tasks as part of a preparticipation screen is useful in the identification of injury risk. An example of a field-based screening tool is the repeated tuck jump assessment. The purpose of this study was to analyze the within-subject variation of the tuck jump screening assessment in elite male youth soccer players. Twenty-five pre-peak height velocity (PHV) and 25 post-PHV elite male youth soccer players from the academy of a professional English soccer club completed the assessment. A test-retest design was used to explore the within-subject intersession reliability. Technique was graded retrospectively against the 10-point criteria set out in the screening protocol using two-dimensional video cameras. The typical error range reported for tuck jump total score (0.90-1.01 in pre-PHV and post-PHV players respectively) was considered acceptable. When each criteria was analyzed individually, kappa coefficient determined that knee valgus was the only criterion to reach substantial agreement across the two test sessions for both groups. The results of this study suggest that although tuck jump total score may be reliably assessed in elite male youth soccer players, caution should be applied in solely interpreting the composite score due to the high within-subject variation in a number of the individual criteria. Knee valgus may be reliably used to screen elite youth male soccer players for this plyometric technique error and for test-retest comparison. © 2015 National Strength and Conditioning Association.","injury screening; landing assessment; soccer; youth","Adolescent; Biomechanical Phenomena; Child; Humans; Knee Injuries; Male; Movement; Reproducibility of Results; Risk Assessment; Soccer; adolescent; biomechanics; child; human; injuries; Knee Injuries; male; movement (physiology); procedures; reproducibility; risk assessment; soccer","Alentorn-Geli E., Myer G.D., Silvers H.J., Samitier G., Romero D., Lazaro-Haro C., Cugat R., Prevention of non-contact anterior cruciate ligament injuri es in soccer players part 1: Mechanisms of injury and underlying risk factors, Knee Surg Sports Traumatol Arthrosc, 17, pp. 705-729, (2009); Atkinson G., Neville A.M., Statistical methods for addressing m easurement error (reliability) in variables relevant to sports medicine, Sports Med, 26, pp. 217-238, (1998); Barber-Westin S.D., Noyes F.R., Galloway M., Jump land characteristics and muscle strength development in young athletes. A gender comparison of 1140 athletes 9-17 years of age, Am J Sports Med, 34, pp. 375-382, (2006); Cloke D., Spencer S., Hodson A., Deehan D., The epidemiology of an kle injuries occurring in english football association academies, Br J Sports Med, 43, pp. 1119-1125, (2009); Daniel D.M., Stone M.L., Dobson B.E., Fithian D.C., Rossman D.J., Kaufman R.F., Fate of the acl injured patient: A prospective outcome study, Am J Sports Med, 22, pp. 632-644, (1994); Dudley L.A., Smith C.A., Olson B.K., Chimera N.J., Schmitz B., Warren M., Interrater and i ntrarater reliability of the tuck jump assessment by health professionals of varied educational backgrounds, J Sports Med, 5, (2013); Ebben W.P., VanderZanden T., Wurm B.J., Petushek E.J., Evaluating plyometric exercises using time to stabilization, J Strength Cond Res, 24, pp. 300-306, (2010); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, pp. 1745-1750, (2003); Gardiner J.C., Weiss J.A., Rosenberg T.D., Strain in the human medial collateral ligament during valgus loading of the knee, Clin Orthop Relat Res, 391, pp. 266-274, (2001); Gerodimos V., Zafeiridis A., Perkos S., Dipla K., Manou V., Kellis S., The contribution of stretch-shortening cycle and armswing to vertical jumping performance in children, adolescents, and adult basketball players, Pediatr Exerc Sci, 20, pp. 379-389, (2008); Herrington L., Myer G.D., Munro A., Intra and inter-tester reliability of the tuck jump assessment, Phys Ther Sport, 14, pp. 152-155, (2013); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Van Den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 3, pp. 492-501, (2005); Hopkins W.G., Measures of reliability in sports medicine and science, Sports Med, 30, pp. 1-15, (2000); Hopkins W.G., Reliability from consec utive pairs of trials (excel spreadsheet), A New View of Statistics. 2000; Hopkins W.G., Hawley J.A., Burke L.M., Design and analysis of research on sports performance enhancement, Med Sci Sports Exerc, 31, pp. 472-485, (1999); Indelicato P.A., Isolated medial collateral ligament injuries in the knee, J Am Acad Orthop Surg, 3, pp. 9-14, (1995); Krosshaug T., Nakamae A., Boden B.P., Engebretsen L., Smith G., Slauterbeck J.R., Hewet T.E., Bahr R., Mechanisms of anteri or cruciate ligament injury in basketball: Video analysis of 39 cases, Am J Sports Med, 35, pp. 359-367, (2007); Landis J.R., Koch G.G., Agreement measures for categorical data, Biometrics, 33, pp. 159-174, (1977); Lazaridis S., Bassa E., Patikas P., Giakas G., Gollhofer A., Kotzamanidis C., Neuromuscular differences between prepubescent boys and adult men during drop jump, Eur J App L Physiol, 110, pp. 67-74, (2010); Le Gall F., Carling C., Reilly T., Vandewalle H., Chruch J., Rochcongar P., Incidence of injuries in elite French youth soccer players: A 10-season study, Am J Sports Med, 34, pp. 928-938, (2006); Li G., Rudy T.W., Allen C., Sakane M., Woo L.S., Effect of combined axial compressive and anterior tibial loads on in situ forces in the anterior cruci ate ligament: A porcine study, J Orthop Res, 16, pp. 122-127, (1998); Little T., Williams A.G., Specificity of acceleration, maximum speed, and agility in professional soccer players, J Strength Cond Res, 19, pp. 76-78, (2005); Lloyd R.S., Oliver J.L., Hughes M.G., Williams C.A., Reliability and validity of field-based measures of leg stiffness and reactive strength index in youths, J Sports Sci, 27, pp. 1565-1573, (2009); McMillan K., Helgerud J., Macdonald R., Hoff J., Physiological adaptations to soccer specific endurance training in professional youth soccer players, Br J Sports Med, 39, pp. 273-277, (2005); Moore O., Cloke D.J., Avery P.J., Beasley I., Deehan D.J., English premiership academy knee injuries: Lessons from a 5 year study, J Sports Sci, 29, pp. 1535-1544, (2011); Myer G.D., Brent J.L., Ford K.R., Hewett T.E., Real-time assessme nt and neuromuscular training feedback techniques to prevent acl injury in female athletes, Strength Cond J, 33, pp. 21-35, (2011); Myer G.D., Ford K.R., Hewett T.E., Tuck jump assessment for reducing anterior cruciate ligament injury risk, Athl Ther Today, 13, pp. 39-44, (2008); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Development and validation of a clinic based prediction tool to identify female athletes at high risk of acl injury, Am J Sports Med, 38, pp. 2025-2033, (2010); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Biomechanics laboratory-based p rediction algorithm to identify female athletes with high knee loads that increase risk of acl injury, Br J Sports Med, 45, pp. 245-252, (2011); Myer G.D., Paterno M.V., Ford K.R., Hewett T.E., Neur omuscular training techniques to target deficits before return to sport after anterior cruciate ligament reconstruction, J Strength Cond Res, 22, pp. 987-1014, (2008); Myer G.D., Stroube B.W., DiCesare C.A., Brent J.L., Ford K.R., Heidt R.S., Hewett T.E., Augmented feedback supports skill transfer and reduces high-risk injury landing mechanics. A doubleblind, randomized controlled laboratory study, Am J Sports Med, 41, pp. 669-677, (2013); Padua D.A., Marshall S.W., Boling M.C., Thigpen C.A., Garrett W.E., Beutler A.I., The landing error scoring system (less) is a valid and reliable clinical assessment tool of jump-landing biomec hanics, Am J Sports Med, 37, pp. 1996-2002, (2009); Paterno M.V., Schmitt L.C., Ford K.R., Rauh M.J., Myer G.D., Haung B., Hewett T.E., Biomechanical measures during landing and postural sta bility predict a second acl injury after acl reconstruction and return to sport, Am J Sports Med, 38, pp. 1968-1978, (2010); Price R.J., Hawkins R.D., Hulse M.A., Hodson A., The football association and medical research programme: An audit of injuries in academy youth football, Br J Sports Med, 38, pp. 466-471, (2004); Stroube B.W., Myer G.D., Brent J.L., Ford K.R., Heidt R.S., Hewett T.E., Effects of task-specific augmented feedback on deficit modification during performance of the tuck-jump exercise, J Sport Rehabil, 22, pp. 7-18, (2013); Sugiomoto D., Alternton-Geli E., Mediguchia J., Samuelsson K., Karlsson J., Myer G.D., Biomechanical and neuromuscular characteristics of male athletes: Implications for the development of anterior cruciate ligament injury prevention programs, Sports Med, 45, pp. 809-822, (2015); Wikstrom E.A., Tillman M.D., Chmielewski T.L., Borsa P.A., Measurement and evaluation of dynamic joint stability of the knee and ankle after injury, Sports Med, 36, pp. 393-410, (2006); Wisloff U., Helgerud J., Hoff J., Strength and endurance of elite soccer players, Med Sci Sports Exerc, 30, pp. 462-467, (1998); Van Der Sluis A., Elferink-Gemser M.T., Coelho-E-Sliva M.J., Nijboer J.A., Brink M.S., Visscher C., Sports injuries aligned to peak height velocity in talented pubertal soccer players, Int J Sports Med, 35, pp. 351-355, (2014); Volpi P., Pozzoni R., Galli M., The major traumas in youth football, Knee Surg Sports Traumatol Arthrosc, 11, pp. 399-402, (2003)","P.J. Read; School of Sport, Health and Applied Science, St Mary's University, London, United Kingdom; email: paul.read@stmarys.ac.uk","","NSCA National Strength and Conditioning Association","10648011","","","26562715","English","J. Strength Cond. Res.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84973377115" "Teixeira L.A.","Teixeira, Luis Agusto (35612842600)","35612842600","Kinematics of kicking as a function of different sources of constraint on accuracy","1999","Perceptual and Motor Skills","88","3","","785","789","4","42","10.2466/pms.1999.88.3.785","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0033146602&doi=10.2466%2fpms.1999.88.3.785&partnerID=40&md5=107dea7a370f7842daddc6b25bfc281f","Esc. de Educ. Fisica e Esporte, Universidade de São Paulo, São Paulo, 05508-900, Brazil","Teixeira L.A., Esc. de Educ. Fisica e Esporte, Universidade de São Paulo, São Paulo, 05508-900, Brazil","The kinematics of kicking were investigated using five experienced players at soccer. They were required to kick powerfully balls of two sizes under conditions with defined and undefined targets. High-velocity cameras were used for three-dimensional analysis. Analysis indicated that the defined target condition led to lower movement speeds and shorter movement times, while balls' sizes influenced only time after peak velocity.","","Adult; Biomechanics; Humans; Leg; Male; Motor Activity; Motor Skills; Soccer; adult; article; biomechanics; human; leg; male; motor activity; motor performance; physiology; sport","Crossman E.R.F.W., Goodeve P.J., Feedback control of hand-movement and Fitts' Law, Quarterly Journal of Experimental Psychology, 35 A, pp. 251-278, (1983); Elliott B., Marsh T., Blanksby B., A three dimensional cinematographic analysis of the tennis serve, International Journal of Sport Biomechanics, 2, pp. 260-271, (1986); Elliott B., Marsh T., Overheu P., A biomechanical comparison of the multisegment and single unit topspin forehand drives in tennis, International Journal of Sport Biomechanics, 5, pp. 350-364, (1989); Mackenzie C.L., Marteniuk R.G., Dugas C., Liske D., Eickmeier B., Three-dimensional movement trajectories in Fitts' task: Implications for control, Quarterly Journal of Experimental Psychology, 39 A, pp. 629-647, (1987); Schmidt R.A., Zelaznik H., Hawkins B., Frank J.S., Quinn J.T., Motor-output variability: A theory for the accuracy of rapid motor acts, Psychological Review, 86, pp. 415-451, (1979)","L.A. Teixeira; Esc. de Educ. Fisica e Esporte, Universidade de São Paulo, São Paulo, 05508-900, Brazil; email: lateixei@usp.br","","Dr. C.H. Ammons","00315125","","PMOSA","10407885","English","Percept. Mot. Skills","Article","Final","","Scopus","2-s2.0-0033146602" "Butler R.J.; Willson J.D.; Fowler D.; Queen R.M.","Butler, Robert J. (7401524529); Willson, John D. (7102953870); Fowler, Donald (55241118400); Queen, Robin M. (24503786500)","7401524529; 7102953870; 55241118400; 24503786500","Gender differences in landing mechanics vary depending on the type of landing","2013","Clinical Journal of Sport Medicine","23","1","","52","57","5","27","10.1097/JSM.0b013e318259efa0","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84872076885&doi=10.1097%2fJSM.0b013e318259efa0&partnerID=40&md5=e5d45f326c7c42cc4f7787f28cea5a34","Division of Physical Therapy, Department of Community Health and Family Medicine, Duke University, Durham, NC 27705, United States; Department of Health Professions, University of Wisconsin-La Crosse, La Crosse, WI, United States; Department of Orthopedics, Duke University, Durham, NC, United States; Michael W. Krzyzewski Human Performance Research Laboratory, Department of Orthopedics, Duke University, Durham, NC, United States","Butler R.J., Division of Physical Therapy, Department of Community Health and Family Medicine, Duke University, Durham, NC 27705, United States; Willson J.D., Department of Health Professions, University of Wisconsin-La Crosse, La Crosse, WI, United States; Fowler D., Department of Orthopedics, Duke University, Durham, NC, United States; Queen R.M., Department of Orthopedics, Duke University, Durham, NC, United States, Michael W. Krzyzewski Human Performance Research Laboratory, Department of Orthopedics, Duke University, Durham, NC, United States","OBJECTIVE:: Men and women exhibit different movement patterns, which are thought to contribute to the increased incidence of anterior cruciate ligament injuries in females. Although gender differences have been observed in movement, few studies have examined gender differences during different types of landings. DESIGN:: Prospective gender comparison study. SETTING:: Controlled laboratory study. PATIENTS:: Fourteen male and 14 female recreational soccer players were recruited for the study. All subjects performed a soccer-specific jump heading activity to examine differences in landing mechanics before and after heading the soccer ball. Subjects began the task by performing a forward jump onto 2 force platforms (landing 1) and conducting a countermovement before jumping up to head a soccer ball that was hanging above the force platform before, then landing back on the force platforms (landing 2). MAIN OUTCOME MEASURES:: A 2-way analysis of variance (gender × landing) was performed to examine the interaction between gender and different types of landings on sagittal plane joint mechanics. RESULTS:: Significant interactions existed for the peak hip extension moment and vertical ground reaction force where the male players exhibited increased values during the second landing compared with the female players. Males exhibited greater peak plantarflexion and knee extension moments, but decreased peak hip flexion. Main effects for landing exhibited lower kinematic and larger kinetic values except for the peak plantarflexion moment. CONCLUSIONS:: Female and male players appear to land differently depending on the type of landing. Therefore, specificity of landing type may be important to consider when screening for injury risk factors. CLINICAL RELEVANCE:: This study examines the differences between genders during 2 different landing tasks and demonstrates the importance of considering the jumping task when screening individuals for injury risk factors. © 2013 by Lippincott Williams & Wilkins.","biomechanics; injury; movement analysis","Adolescent; Adult; Analysis of Variance; Anterior Cruciate Ligament; Biomechanics; Female; Hip Joint; Humans; Knee Injuries; Knee Joint; Male; Movement; Prospective Studies; Range of Motion, Articular; Sex Factors; Soccer; Young Adult; adult; article; athlete; body movement; controlled study; female; hip; human; joint function; jumping; knee; male; musculoskeletal function; priority journal; prospective study; sex difference","Brown C.H., Carson E.W., Revision anterior cruciate ligament surgery, Clin Sports Med, 18, pp. 109-171, (1999); Arendt E.A., Dick R., Gender-specific knee injury pattern in collegiate basketball and soccer: NCAA data and review of literature, Am J Sports Med, 23, pp. 694-701, (1995); Griffin L.Y., Agel J., Albohm M.J., Et al., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, J Am Acad Orthop Surg, 8, pp. 141-150, (2000); Noyes F.R., Barber-Westin S.D., Smith S.T., Et al., A training program to improve neuromuscular and performance indices in female high school soccer players, J Strength Cond Res, 26, pp. 709-719, (2012); McCurdy K., Walker J., Saxe J., Et al., The effect of short-term resistance training on hip and knee kinematics during vertical drop jumps, J Strength Cond Res, 26, pp. 1257-1264, (2012); Schmitz R.J., Kulas A.S., Perrin D.H., Et al., Sex differences in lower extremity biomechanics during single leg landings, Clin Biomech (Bristol, Avon, 22, pp. 681-688, (2007); Yu B., Garrett W.E., Mechanisms of non-contact ACL injuries, Br J Sports Med, 41, pp. 47-51, (2007); Chappell J.D., Yu B., Kirkendall D.T., Et al., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am J Sports Med, 30, pp. 261-267, (2002); Weinhandl J.T., Joshi M., O'Connor K.M., Gender comparisons between unilateral and bilateral landings, J Appl Biomech, 26, pp. 444-453, (2010); Beutler A.I., De La Motte S.J., Marshall S.W., Et al., Muscle strength and qualitative jump-landing differences in male and female military cadets: The jump-ACL study, J Sports Sci Med, 8, pp. 663-671, (2009); Malinzak R.A., Colby S.M., Kirkendall D.T., Et al., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech (Bristol, Avon, 16, pp. 438-445, (2001); Ford K.R., Myer G.D., Smith R.L., Et al., Use of an overhead goal alters vertical jump performance and biomechanics, J Strength Cond Res, 19, pp. 394-399, (2005); Salci Y., Kentel B.B., Heycan C., Et al., Comparison of landing maneuvers between male and female college volleyball players, Clin Biomech (Bristol, Avon, 19, pp. 622-628, (2004); Taylor K.A., Terry M.E., Utturkar G.M., Et al., Measurement of in vivo anterior cruciate ligament strain during dynamic jump landing, J Biomech, 44, pp. 365-371, (2011); Decker M.J., Torry M.R., Wyland D.J., Et al., Gender differences in lower extremity kinematics, kinetics and energy absorption during landing, Clin Biomech (Bristol, Avon, 18, pp. 662-669, (2003); Butler R.J., Crowell III H.P., Davis I.M., Lower extremity stiffness: Implications for performance and injury, Clin Biomech (Bristol, Avon, 18, pp. 511-517, (2003)","R.J. Butler; Division of Physical Therapy, Department of Community Health and Family Medicine, Duke University, Durham, NC 27705, United States; email: robert.butler@duke.edu","","","15363724","","CJSME","22678111","English","Clin. J. Sport Med.","Article","Final","","Scopus","2-s2.0-84872076885" "Saunders T.D.; Le R.K.; Breedlove K.M.; Bradney D.A.; Bowman T.G.","Saunders, Tabitha D. (57204790638); Le, Rachel K. (57221689628); Breedlove, Katherine M. (56338287000); Bradney, Debbie A. (16444215400); Bowman, Thomas G. (16444284500)","57204790638; 57221689628; 56338287000; 16444215400; 16444284500","Sex differences in mechanisms of head impacts in collegiate soccer athletes","2020","Clinical Biomechanics","74","","","14","20","6","30","10.1016/j.clinbiomech.2020.02.003","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85079607991&doi=10.1016%2fj.clinbiomech.2020.02.003&partnerID=40&md5=b5724b82d0a795c4df72798877eca0ef","Department of Athletic Training, University of Lynchburg, United States; Center for Clinical Spectroscopy, Department of Radiology, Brigham and Women's Hospital, United States; Department of Radiology, Harvard Medical School, United States","Saunders T.D., Department of Athletic Training, University of Lynchburg, United States; Le R.K., Department of Athletic Training, University of Lynchburg, United States; Breedlove K.M., Center for Clinical Spectroscopy, Department of Radiology, Brigham and Women's Hospital, United States, Department of Radiology, Harvard Medical School, United States; Bradney D.A., Department of Athletic Training, University of Lynchburg, United States; Bowman T.G., Department of Athletic Training, University of Lynchburg, United States","Background: There has been growing interest in head impacts related to sports participation due to potential long- and short-term consequences of head injuries. Our purpose was to compare head impact magnitude and frequency between men's and women's intercollegiate soccer players based on head impact mechanism. Methods: 28 collegiate soccer players (16 women: age = 19.94 (1.06) years, height = 163.75 (5.15) cm, mass = 61.21 (5.09) kg; 12 men: age = 20.25 (1.14) years, height = 180.34 (6.03) cm, mass = 74.09 (9.32) kg) wore xPatch (X2 Biosystems, Seattle, WA) head impact sensors. Each practice and game was video recorded in order to confirm head impacts. The independent variable was impact mechanism (head to head, head to body (other than head), head to ground, ball to head, goal to head, and combination). Sensors collected linear and rotational accelerations and frequency of head impacts per 1000 athlete exposures. Findings: Men were more likely to sustain head impacts than women (IRR = 1.74, CI95 = 1.59–1.92). The highest head impact incidence rate for men was head to body (IR = 611.68, CI95 = 553.11–670.25) while the highest impact incidence rate for women was ball to head (IR = 302.29, CI95 = 270.93–333.64). The interaction between sex and mechanism was significant for rotational accelerations (F4, 1720 = 3.757, P = .005, ω2 = 0.013) but not for linear accelerations (F4,1720 = 0.680, P = .606, ω2 < 0.001, 1 − β = 0.223). Interpretation: To reduce the frequency of head impacts in men, perhaps rules governing player to player contact should be more strictly enforced as these data confirm frequent player-to-head contact during soccer practices and games. Prevention efforts for women should be focused on limiting the amount of purposeful heading (planned contact between the head and ball) occurring during play especially since these impacts had higher magnitudes compared to men. © 2020 Elsevier Ltd","Futbol; Head impact biomechanics; xPatch","Acceleration; Adult; Athletes; Athletic Injuries; Craniocerebral Trauma; Female; Head; Humans; Male; Sex Characteristics; Soccer; Video Recording; Young Adult; Biomechanics; Biophysics; Futbol; Head impact; Impact mechanism; Independent variables; Linear accelerations; Rotational acceleration; Sex difference; xPatch; acceleration; adult; Article; comparative study; female; follow up; head impact; head injury; human; male; priority journal; sex difference; soccer player; videorecording; athlete; head; head injury; injury; pathophysiology; sexual characteristics; soccer; sport injury; young adult; Sports","Brainard L.L., Beckwith J.G., Chu J.J., Et al., Gender differences in head impacts sustained by collegiate ice hockey players, Med. Sci. Sports Exerc., 44, 2, (2012); Caccese J., Kaminski T., Neurocognitive changes in men's and women's soccer players across a collegiate career, International Research in Science and Soccer II, (2016); Caccese J.B., Buckley T.A., Tierney R.T., Et al., Head and neck size and neck strength predict linear and rotational acceleration during purposeful soccer heading, Sport Biomech., 17, 4, pp. 462-476, (2018); Caccese J., Bunkley T., Rose W., Tierney R., Glutting J.J., Kaminski T.W., Sex and age differences in head acceleration during purposeful soccer heading, Res. Sports Med., 26, 1, pp. 64-74, (2018); Comstock R.D., Currie D.W., Pierpoint L.A., Grubenhoff J.A., Fields S.K., An evidence-based discussion of heading the ball and concussions in high school soccer, JAMA Pediatr., 169, 9, pp. 830-837, (2015); Cortes N., Lincoln A.E., Myer G.D., Et al., Video analysis verification of head impact events measured by wearable sensors, Am. J. Sports Med., 45, 10, pp. 2379-2387, (2017); Cummiskey B., Schiffmiller D., Talavage T.M., Et al., Reliability and accuracy of helmet-mounted and head-mounted devices used to measure head accelerations, Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 231, 2, pp. 144-153, (2016); Dvorak J., McCrory P., Kirkendall D.T., Head injuries in the female football player: incidence, mechanisms, risk factors and management, Br. J. Sports Med., 41, pp. i44-i46, (2007); Erev I., Ingram P., Raz O., Shany D., Continuous punishment and the potential of gentle rule enforcement, Behav. Process., 84, 1, pp. 366-371, (2010); Gutierrez G.M., Conte C., Lightbourne K., The relationship between impact force, neck strength, and neurocognitive performance in soccer heading in adolescent females, Pediatr. Exerc. Sci., 26, 1, pp. 33-40, (2014); Hootman J.M., Dick R., Agel J., Epidemiology of collegiate injuries for 15 sports: summary and recommendations for injury prevention initiatives, J. Athl. Train., 42, 2, pp. 311-319, (2007); Kaminski T.W., Wikstrom A.M., Gutierrez G.M., Glutting J.J., Purposeful heading during a season does not influence cognitive function or balance in female soccer players, J. Clin. Exp. Neuropsychol., 29, 7, pp. 742-751, (2007); Kaminski T.W., Cousino E.S., Glutting J.J., Examining the relationship between purposeful heading in soccer and computerized neuropsychological test performance, Res. Q. Exerc. Sport, 79, 2, pp. 235-244, (2008); Knowles S.B., Marshall S.W., Guskiewicz K.M., Issues in estimating risks and rates in sports injury research, J. Athl. Train., 41, 2, (2006); Koerte I.K., Ertl-Wagner B., Reiser M., Zafonte R., Shenton M.E., White matter integrity in the brains of professional soccer players without a symptomatic concussion, JAMA., 308, 18, pp. 1859-1861, (2012); Koerte I.K., Lin A.P., Muehlmann M., Et al., Altered neurochemistry in former professional soccer players without a history of concussion, J. Neurotrauma, 32, 17, pp. 1287-1293, (2015); Koerte I.K., Mayinger M., Muehlmann M., Et al., Cortical thinning in former professional soccer players, Brain Imaging and Behavior, 10, 3, pp. 792-798, (2016); Lamond L.C., Caccese J.B., Buckley T.A., Glutting J., Kaminski T.W., Linear acceleration in direct head contact across impact type, player position, and playing scenario in collegiate women's soccer players, J. Athl. Train., 53, 2, pp. 115-121, (2018); Lincoln A.E., Caswell S.V., Almquist J.L., Dunn R.E., Hinton R.Y., Video incident analysis of concussions in boys’ high school lacrosse, Am. J. Sports Med., 41, 4, pp. 756-761, (2013); Lipton M.L., Kim N., Zimmerman M.E., Et al., Soccer heading is associated with white matter microstructural and cognitive abnormalities, Radiology., 268, 3, pp. 850-857, (2013); Lomax R.G., Hahs-Vaughn D.L., An Introduction to Statistical Concepts, (2013); Lynall R.C., Clark M.D., Grand E.E., Et al., Head impact biomechanics in women's college soccer, Med. Sci. Sports Exerc., 48, 9, pp. 1772-1778, (2016); Matser J., Kessels A., Jordan B., Lezak M., Troost J., Chronic traumatic brain injury in professional soccer players, Neurology., 51, 3, pp. 791-796, (1998); Matser E.J., Kessels A.G., Lezak M.D., Jordan B.D., Troost J., Neuropsychological impairment in amateur soccer players, JAMA., 282, 10, pp. 971-973, (1999); McCuen E., Svaldi D., Breedlove K., Et al., Collegiate women's soccer players suffer greater cumulative head impacts than their high school counterparts, J. Biomech., 48, 13, pp. 3720-3723, (2015); National Collegiate Athletic Association, Soccer 2016 and 2017 Rules, (2016); National Collegiate Athletic Association, Sport Sponsorship, Participation, and Demographics Search, (2016); National Collegiate Athletic Association, Ice Hockey 2016–17 and 2017–18 Rules and Interpretations, (2016); Nevins D., Hildenbrand K., Vasavada A., Kensrud J., Smith L., In-game head impact exposure of male and female high school soccer players, Athl Train Sports Health Care, 11, 4, pp. 174-182, (2019); Ng T.P., Bussone W.R., Duma S.M., The effect of gender and body size on linear accelerations of the head observed during daily activities, Biomed. Sci. Instrum., 2006, 42, pp. 25-30, (2006); Patton D.A., A review of instrumented equipment to investigate head impacts in sport, Appl. Bionics Biomech., 2016, pp. 1-16, (2016); Press J.N., Rowson S., Quantifying head impact exposure in collegiate women's soccer, Clin. J. Sport Med., 27, 2, pp. 104-110, (2017); Reynolds B.B., Patrie J., Henry E.J., Et al., Effects of sex and event type on head impact in collegiate soccer, Orthop. J. Sports Med., 5, 4, pp. 1-10, (2017); Svaldi D.O., McCuen E.C., Joshi C., Et al., Cerebrovascular reactivity changes in asymptomatic female athletes attributable to high school soccer participation, Brain Imaging Behav., 11, 1, pp. 98-112, (2017); Wilcox B.J., Machan J.T., Beckwith J.G., Greenwald R.M., Burmeister E., Crisco J.J., Head-impact mechanisms in men's and women's collegiate ice hockey, J. Athl. Train., 49, 4, pp. 514-520, (2014); Witol A.D., Webbe F.M., Soccer heading frequency predicts neuropsychological deficits, Arch. Clin. Neuropsychol., 18, 4, pp. 397-417, (2003); Wu L.C., Nangia V., Bui K., Et al., In vivo evaluation of wearable head impact sensors, Ann. Biomed. Eng., 44, 4, pp. 1234-1245, (2016); Zhang M.R., Red S.D., Lin A.H., Patel S.S., Sereno A.B., Evidence of cognitive dysfunction after soccer playing with ball heading using a novel tablet-based approach, PLOS ONE, 8, 2, (2013)","T.G. Bowman; Lynchburg, 1501 Lakeside Drive, 24501, United States; email: Bowman.t@lynchburg.edu","","Elsevier Ltd","02680033","","CLBIE","32097766","English","Clin. Biomech.","Article","Final","","Scopus","2-s2.0-85079607991" "Hetsroni I.; Nyska M.; Ben-Sira D.; Mann G.; Segal O.; Maoz G.; Ayalon M.","Hetsroni, Iftach (8389103400); Nyska, Meir (7005349509); Ben-Sira, David (6603955373); Mann, Gideon (7201974614); Segal, Ofer (35146851500); Maoz, Guy (24597824500); Ayalon, Moshe (6603008706)","8389103400; 7005349509; 6603955373; 7201974614; 35146851500; 24597824500; 6603008706","Analysis of foot structure in athletes sustaining proximal fifth metatarsal stress fracture","2010","Foot and Ankle International","31","3","","203","211","8","34","10.3113/FAI.2010.0203","https://www.scopus.com/inward/record.uri?eid=2-s2.0-77449090131&doi=10.3113%2fFAI.2010.0203&partnerID=40&md5=293fd97cded7d9b91226ea441bb757b3","Orthopaedic Department, Meir Hospital, Sapir Medical Center, Kfar Saba, Israel; Sackler Faculy of Medicine, Tel Aviv University, Tel Aviv, Israel; Biomechanics Laboratory, Zinman College of Physical Education and Sport Sciences, Wingate Institute, Netanya, Israel","Hetsroni I., Orthopaedic Department, Meir Hospital, Sapir Medical Center, Kfar Saba, Israel, Sackler Faculy of Medicine, Tel Aviv University, Tel Aviv, Israel; Nyska M., Orthopaedic Department, Meir Hospital, Sapir Medical Center, Kfar Saba, Israel, Sackler Faculy of Medicine, Tel Aviv University, Tel Aviv, Israel; Ben-Sira D., Biomechanics Laboratory, Zinman College of Physical Education and Sport Sciences, Wingate Institute, Netanya, Israel; Mann G., Orthopaedic Department, Meir Hospital, Sapir Medical Center, Kfar Saba, Israel, Sackler Faculy of Medicine, Tel Aviv University, Tel Aviv, Israel; Segal O., Biomechanics Laboratory, Zinman College of Physical Education and Sport Sciences, Wingate Institute, Netanya, Israel; Maoz G., Orthopaedic Department, Meir Hospital, Sapir Medical Center, Kfar Saba, Israel, Sackler Faculy of Medicine, Tel Aviv University, Tel Aviv, Israel; Ayalon M., Biomechanics Laboratory, Zinman College of Physical Education and Sport Sciences, Wingate Institute, Netanya, Israel","Background: In the past, several studies provided anecdotal descriptions of high-arched feet in individuals sustaining proximal fifth metatarsal stress fractures. This relationship has never been supported by scientific evidence. Our objective was to examine whether athletes who sustained this injury had an exceptional static foot structure or dynamic loading pattern. Materials and Methods: Ten injured professional soccer players who regained full professional activity following a unilateral proximal fifth metatarsal stress fracture and ten control soccer players were examined. Independent variables included static evaluation of foot and arch structure, followed by dynamic plantar foot pressure evaluation. Each variable was compared between injured, contra-lateral uninjured, and control feet. Results: Static measurements of foot and arch structure did not reveal differences among the groups. However, plantar pressure evaluation revealed relative unloading of the fourth metatarsal in injured and uninjured limbs of injured athletes compared with control, while the fifth metatarsal revealed pressure reduction only in the injured limbs of injured athletes. Conclusion: Athletes who sustained proximal fifth metatarsal stress fracture were not characterized by an exceptional static foot structure. Dynamically, lateral metatarsal unloading during stance may either play a role in the pathogenesis of the injury, or alternately represent an adaptive process. Clinical Relevance: Footwear fabrication for previously injured athletes should not categorically address cushioning properties designed for high-arch feet, but rather focus on individual dynamic evaluation of forefoot loading, with less attention applied to static foot and arch characteristics. Copyright © 2010 by the American Orthopaedic Foot & Ankle Society.","Fifth metatarsal; Peak pressure; Stance phase; Stress fracture","Adult; Biomechanics; Case-Control Studies; Forefoot, Human; Fracture Fixation, Intramedullary; Fractures, Stress; Humans; Metatarsal Bones; Pressure; Retrospective Studies; Soccer; adult; article; athlete; clinical article; controlled study; foot injury; gait; human; metatarsal bone; pathogenesis; priority journal; proximal fifth metatarsal stress fracture; sport injury; standing; stress fracture; weight bearing","Brosh T., Arcan M., Toward early detection of the tendency to stress fractures, Clin Biomech, 9, pp. 111-116, (1994); Carp L., Fracture of the fifth metatarsal bone with special reference to delayed union, Ann Surg, 86, pp. 308-320, (1927); Cavanagh P.R., Morag E., Boulton A.J., Et al., The relationship of static foot structure to dynamic foot function, J Biomech, 30, pp. 243-250, (1997); Cummings S.R., Bates D., Black D.M., Clinical use of bone densitometry: Scientific review, JAMA, 288, pp. 1889-1897, (2002); Dameron T.B., Fractures and anatomical variations of the proximal portion of the fifth metatarsal, J Bone Joint Surg Am, 57, pp. 788-792, (1975); Dixon S.J., Creaby M.W., Allsopp L.J., Comparison of static and dynamic biomechanical measures in military recruits with and without a history of third metatarsal stress fracture, Clin Biomech, 21, pp. 412-419, (2006); Donahue S.W., Sharkey N.A., Strains in the metatarsals during the stance phase of gait: Implications for stress fractures, J Bone Joint Surg, 81, 9, pp. 1236-1244, (1999); Hernandez C.J., Keaveny T.M., A biomechanical perspective on bone quality, Bone, 39, pp. 1173-1181, (2006); Hetsroni I., Finestone A., Milgronm C., Et al., The role of foot pronation in the development of femoral and tibial stress fractures: A prospective biomechanical study, Clin J Sport Med, 18, pp. 18-23, (2008); Hughes L.Y., Biomechanical analysis of foot and ankle predisposition to developing stress fractures, J Orthop Sports Phys Ther, 7, pp. 96-101, (1985); Hulkko A., Orava S., Nikula P., Stress fracture of the fifth metatarsal in athletes, Ann Chir Gynaecol, 74, pp. 233-238, (1985); Kavanaugh J.H., Brower T.D., Mann R.V., The Jones fracture revisited, J Bone Joint Surg Am, 60, pp. 776-782, (1978); Kitoaka H.B., Alexander I.J., Adelaar R.S., Et al., Clinical rating systems for the ankle-hindfoot, midfoot, hallux, and lesser toes, Foot Ankle Int, 15, pp. 349-353, (1994); Laurich L.J., Witt C.S., Zielsdorf L.M., Treatment of fractures of the fifth metatarsal bone, J Foot Surg, 22, pp. 207-211, (1983); Levy J.M., Stress fractures of the first metatarsal, AJR, 130, pp. 679-681, (1978); McPoil T.G., Cornwall M.W., Use of the longitudinal arch angle to predict dynamic foot posture in walking, J Am Podiatr Med Assoc, 95, pp. 114-120, (2005); Orava S., Hulkko A., Delayed unions and nonunions of stress fractures in athletes, Am J Sports Med, 16, pp. 378-382, (1988); Porter D.A., Duncan M., Meyer S.J., Fifth metatarsal Jones fracture fixation with a 4.5-mm cannulated stainless steel screw in the competitive and recreational athlete: A clinical and radiographic evaluation, Am J Sports Med, 33, pp. 726-733, (2005); Shereff M.J., Yang Q.M., Kummer F.J., Frey C.C., Greenidge N., Vascular anatomy of the fifth metatarsal, Foot Ankle Int, 11, pp. 350-353, (1991); Simkin A., Leichter I., Giladi M., Stein M., Milgrom C., Combined effect of foot arch structure and an orthotic device on stress fractures, Foot Ankle, 10, pp. 25-29, (1989); Smith J.W., Arnoczky S.P., Hersh A., The intraosseous blood suply of the fifth metatarsal: Implications for proximal fracture healing, Foot Ankle Int, 13, pp. 143-152, (1992); Stokes I.A.F., Hutton W.C., Stott J.R.R., Forces acting on the metatarsals during normal walking, J Anat, 129, pp. 579-590, (1979); Subotnick S.I., Sisney P., Treatment of Achilles tendinopathy in the athlete, J Am Podiatr Med Assoc, 76, pp. 552-557, (1986); Torg J.S., Balduini F.C., Zelco R.R., Et al., Fractures of the base of the fifth metatarsal distal to tuberosity. Classification and guidelines for non-surgical and surgical treatment, J Bone Joint Surg Am, 66, pp. 209-214, (1984); Van Der Meulen M.C., Jepsen K.J., Mikic B., Understanding bone strength: Size isn't everything, Bone, 29, pp. 101-104, (2001); Williams D.S., McClay I.S., Measurements used to characterize the foot and the medial longitudinal arch: Reliability and validity, Phys Ther, 80, pp. 864-871, (2000); Williams 3rd D.S., McClay I.S., Hamill J., Arch structure and injury patterns in runners, Clin Biomech, 16, pp. 341-347, (2001)","I. Hetsroni; Meir General Hospital, Sapir Medical Center, Kfar Saba 44281, Tsharnichovski St. 59, Israel; email: iftachhetsroni@gmail.com","","","10711007","","FAINE","20230698","English","Foot Ankle Int.","Article","Final","","Scopus","2-s2.0-77449090131" "Cortes N.; Morrison S.; Van Lunen B.L.; Onate J.A.","Cortes, Nelson (23033673100); Morrison, Steven (7201672373); Van Lunen, Bonnie L. (6506227549); Onate, James A. (7004831141)","23033673100; 7201672373; 6506227549; 7004831141","Landing technique affects knee loading and position during athletic tasks","2012","Journal of Science and Medicine in Sport","15","2","","175","181","6","30","10.1016/j.jsams.2011.09.005","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857458067&doi=10.1016%2fj.jsams.2011.09.005&partnerID=40&md5=2c916f023d9978a96ce4fda585839791","Sports Medicine Assessment, Research and Testing (SMART) Laboratory, School of Recreation Health, and Tourism, George Mason University, Manassas, VA, United States; Human Movement Sciences Department, Old Dominion University, Norfolk, VA, United States; School of Physical Therapy, Old Dominion University, Norfolk, VA, United States; School of Allied Medical Professions, The Ohio State University, Columbus, OH, United States","Cortes N., Sports Medicine Assessment, Research and Testing (SMART) Laboratory, School of Recreation Health, and Tourism, George Mason University, Manassas, VA, United States, Human Movement Sciences Department, Old Dominion University, Norfolk, VA, United States; Morrison S., School of Physical Therapy, Old Dominion University, Norfolk, VA, United States; Van Lunen B.L., Sports Medicine Assessment, Research and Testing (SMART) Laboratory, School of Recreation Health, and Tourism, George Mason University, Manassas, VA, United States; Onate J.A., School of Allied Medical Professions, The Ohio State University, Columbus, OH, United States","Anterior cruciate ligament (ACL) injuries have been reported to occur with the ankle in a dorsiflexed position at initial contact. Few studies have attempted to quantify the biomechanical parameters related with such landing patterns during athletic tasks. Objectives: The purpose of this study was to evaluate the effects that two landing techniques have in lower extremity biomechanics while performing two tasks. Design: Single-group repeated measures design. Methods: Twenty female soccer athletes from a Division I institution performed two landing techniques (forefoot and rearfoot) during two unanticipated tasks (sidestep cutting and pivot). Repeated measures analyses of variance were conducted to assess differences in the kinematic and kinetic parameters between landing techniques for each task. Results: The forefoot landing technique had significantly higher internal knee adductor moment than the rearfoot for both the pivot and sidestep cutting task (p < 0.001 and p = 0.003, respectively). For the sidestep cutting task, participants had increased knee valgus angle with the rearfoot, whereas for the pivot they had increased knee valgus with the forefoot landing technique (p < 0.05). Conclusions: The results of this study highlighted that there are inherent differences in biomechanical outcomes between foot-landing techniques. The forefoot landing technique increasingly affects knee adduction moment loading, which can potentially place a higher strain on the ACL. Essentially, the demands of the landing technique on lower extremity biomechanics (e.g., hip and knee) are task dependent. © 2011 Sports Medicine Australia.","Kinematics; Kinetics; Landing technique; Pivot; Sidestep","Ankle; Anterior Cruciate Ligament; Athletes; Biomechanics; Female; Foot; Hip; Humans; Knee; Soccer; Task Performance and Analysis; Young Adult; adduction; adult; article; athlete; biomechanics; body position; female; forefoot; forefoot landing technique; human; human experiment; kinematics; knee; procedures; rearfoot landing technique; risk factor; task performance; valgus knee","Griffin L.Y., Albohm M.J., Arendt E.A., Et al., Understanding and preventing noncontact anterior cruciate ligament injuries: a review of the Hunt Valley II meeting January 2005, Am J Sports Med, 34, 9, pp. 1512-1532, (2006); Lohmander L.S., Ostenberg A., Englund M., Et al., High prevalence of knee osteoarthritis, pain, and functional limitations in female soccer players twelve years after anterior cruciate ligament injury, Arthritis Rheum, 50, 10, pp. 3145-3152, (2004); Boden B.P., Dean G.S., Feagin J.A., Et al., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Gilchrist J., Mandelbaum B.R., Melancon H., Et al., A randomized controlled trial to prevent noncontact anterior cruciate ligament injury in female collegiate soccer players, Am J Sports Med, 36, 8, pp. 1476-1483, (2008); Hewett T.E., Stroupe A.L., Nance T.A., Et al., Plyometric training in female athletes, decreased impact forces and increased hamstring torques, Am J Sports Med, 24, 6, pp. 765-773, (1996); Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: a 13-year review, Am J Sports Med, 33, 4, pp. 524-530, (2005); Boden B.P., Torg J.S., Knowles S.B., Et al., Video analysis of anterior cruciate ligament injury: abnormalities in hip and ankle kinematics, Am J Sports Med, 37, 2, pp. 252-259, (2009); Cortes N., Onate J., Abrantes J., Et al., Effects of gender and foot-landing techniques on lower extremity kinematics during drop-jump landings, J Appl Biomech, 23, 4, pp. 289-299, (2007); Kovacs I., Tihanyi J., Devita P., Et al., Foot placement modifies kinematics and kinetics during drop jumping, Med Sci Sports Exerc, 31, 5, pp. 708-716, (1999); McLean S.G., Huang X., Su A., Et al., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clin Biomech (Bristol, Avon), 19, 8, pp. 828-838, (2004); Cortes N., Onate J., Van Lunen B., Pivot task increases knee frontal plane loading compared with sidestep and drop-jump, J Sports Sci, 29, 1, pp. 83-92, (2011); Bangsbo J., Nielsenm J.J., Mohrm M., Et al., Performance enhancements and muscular adaptations of a 16-week recreational football intervention for untrained women, Scand J Med Sci Sports, (2009); Greig M., The influence of soccer-specific activity on the kinematics of an agility sprint, Eur J Sport Sci, 9, 1, pp. 23-33, (2009); McLean S.G., Huang X., van den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: implications for ACL injury, Clin Biomech (Bristol, Avon), 20, 8, pp. 863-870, (2005); Lu T.W., O'Connor J.J., Bone position estimation from skin marker co-ordinates using global optimisation with joint constraints, J Biomech, 32, 2, pp. 129-134, (1999); Dempster W.T., WADC technical report. Space requirements of the seated operator: geometrical kinematic, and mechanical aspects of the body with special reference to the limbs, Wright-Patterson Air Force Base, pp. 55-159, (1955); Winter D.A., Biomechanics and motor control of human movement, (2005); Kadaba M.P., Ramakrishnan H.K., Wootten M.E., Measurement of lower extremity kinematics during level walking, J Orthop Res, 8, 3, pp. 383-392, (1990); Cortes N., Blount E., Ringleb S., Et al., Soccer-specific video simulation for improving movement assessment, Sports Biomech /Int Soc Biomech Sports, 10, 1, pp. 12-24, (2011); McLean S.G., Felin R.E., Suedekum N., Et al., Impact of fatigue on gender-based high-risk landing strategies, Med Sci Sports Exerc, 39, 3, pp. 502-514, (2007); Krosshaug T., Nakamae A., Boden B.P., Et al., Mechanisms of anterior cruciate ligament injury in basketball: video analysis of 39 cases, Am J Sports Med, 35, 3, pp. 359-367, (2007); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Renstrom P., Ljungqvist A., Arendt E., Et al., Non-contact ACL injuries in female athletes: an International Olympic Committee current concepts statement, Br J Sports Med, 42, 6, pp. 394-412, (2008); Newell K.M., Change in movement and skill: learning, retention and transfer, Dexterity and its development., pp. 393-429, (1996); Sell T.C., Ferris C.M., Abt J.P., Et al., Predictors of proximal tibia anterior shear force during a vertical stop-jump, J Orthop Res, 25, 12, pp. 1589-1597, (2007); Blackburn J.T., Padua D.A., Sagittal-plane trunk position, landing forces, and quadriceps electromyographic activity, J Athl Train, 44, 2, pp. 174-179, (2009); Hashemi J., Breighner R., Chandrashekar N., Et al., Hip extension, knee flexion paradox: a new mechanism for non-contact ACL injury, J Biomech, 44, 4, pp. 577-585, (2011); Wojtys E.M., Ashton-Miller J.A., Huston L.J., A gender-related difference in the contribution of the knee musculature to sagittal-plane shear stiffness in subjects with similar knee laxity, J Bone Joint Surg Am, 1, pp. 10-16, (2002); Beynnon B.D., Fleming B.C., Johnson R.J., Et al., Anterior cruciate ligament strain behavior during rehabilitation exercises in vivo, Am J Sports Med, 23, 1, pp. 24-34, (1995); Li G., Rudy T.W., Sakane M., Et al., The importance of quadriceps and hamstring muscle loading on knee kinematics and in-situ forces in the ACL, J Biomech, 32, 4, pp. 395-400, (1999)","N. Cortes; Sports Medicine Assessment Research and Testing (SMART) Laboratory, School of Recreation Health, and Tourism, George Mason University, Manassas, VA, United States; email: ncortes@gmu.edu","","","18781861","","JSMSF","22036664","English","J. Sci. Med. Sport","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84857458067" "Bartlett M.D.; James I.T.; Ford M.; Jennings-Temple M.","Bartlett, M.D. (55545862667); James, I.T. (57204025716); Ford, M. (57198113338); Jennings-Temple, M. (35181329600)","55545862667; 57204025716; 57198113338; 35181329600","Testing natural turf sports surfaces: The value of performance quality standards","2009","Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","223","1","","21","29","8","25","10.1243/17543371JSET24","https://www.scopus.com/inward/record.uri?eid=2-s2.0-70350589045&doi=10.1243%2f17543371JSET24&partnerID=40&md5=d24233ddb90dad1897a144d49bda134a","School of Applied Sciences, Centre for Sports Surface Technology, Cranfield University, Cranfield, Bedfordshire, MK43 0AL, College Road, United Kingdom; Institute of Groundsmanship, Milton Keynes, United Kingdom; Sports Surface Design and Management, Takapuna, Auckland, New Zealand","Bartlett M.D., School of Applied Sciences, Centre for Sports Surface Technology, Cranfield University, Cranfield, Bedfordshire, MK43 0AL, College Road, United Kingdom; James I.T., School of Applied Sciences, Centre for Sports Surface Technology, Cranfield University, Cranfield, Bedfordshire, MK43 0AL, College Road, United Kingdom; Ford M., Institute of Groundsmanship, Milton Keynes, United Kingdom; Jennings-Temple M., Sports Surface Design and Management, Takapuna, Auckland, New Zealand","The performance of a sports surface is quantified for a number of reasons and by a range of methods. Four categories of surface performance testing are proposed: category 1, to determine compliance with minimum standards; category 2, to assess the overall quality of surfaces across different tiers of sport; category 3, to inform management intervention (construction and maintenance); category 4, to inform research into sports surface engineering, equipment development, the biomechanics of sports performance, and sports injury. The majority of testing in the UK falls into category 1, particularly for synthetic surfaces. Performance quality standards (PQSs) are a system for the quantification of natural turf surface performance and are suitable for category 1 testing but in this study the suitability of the PQS approach for category 2 and category 3 testing was considered in the objective statistical analysis of data from football (soccer) and cricket in the UK. Analysis determined that a PQS is suitable for category 2 testing but that a weighting system for individual components should be developed. Development of a system of decision support based upon PQS data will enable PQS systems to be used for category 3 approaches, although a coherent decision support system is not currently available. The limitation of this type of testing for category 4 was also considered. © IMechE 2009.","Cluster analysis; Cricket; Football; Performance quality standards; Principal components analysis; Soccer; Sports surface performance","Artificial intelligence; Biomechanics; Cluster analysis; Construction equipment; Decision support systems; Decision theory; Principal component analysis; Regulatory compliance; Research and development management; Sports medicine; Standardization; Surface testing; Cricket; Football; Performance quality standards; Principal components analysis; Soccer; Sports surface performance; Quality control","Handbook of Performance Requirements and Test Procedures for Synthetic Hockey Pitches - Outdoor, (1999); Court Surface Classification Scheme, (2000); FIFA Quality Concept: Handbook of Requirements for Football Turf, (2006); Young C., Fleming P.R., A review of mechanical impact testing devices for sport surfaces, Proceedings of the First International Conference of the SportSURF Network: Science, Technology and Research into Sport Surfaces (STARSS 2007), (2007); Regulation 22. Standard Relating to the Use of Artificial Playing Surfaces: IRB Performance Specification for Artificial Surfaces for Rugby, (2008); Severn K., Young C., Fleming P., James I.T., The play performance of six water based field hockey pitches: Spatial and temporal changes, Proceedings of the First International Conference of the SportSURF Network: Science, Technology and Research into Sport Surfaces (STARSS 2007), (2007); The Horseracing Regulatory Authority General Instructions, (2005); Baker S.W., Cole A.R., Thornton S.L., Performance standards and the interpretation of playing quality for soccer in relation to rootzone composition, J. Sports Turf Res. Inst., 64, pp. 120-132, (1998); Recommended guidelines for the construction, preparation and maintenance of cricket pitches and outfields at all levels of the game, (2007); Jennings-Temple M., Leeds-Harrison P.B., James I.T., An investigation into the link between soil physical conditions and the playing quality of winter sports pitch rootzones, The Engineering of Sport 6, 1, pp. 315-320, (2006); Mumford C., The Optimization of Going Management on UK Racecourses Using Controlled Water Applications, (2006); Fleming P.R., Young C., Roberts J.R., Jones R., Dixon N., Human perceptions of artificial surfaces for field hockey, Sports Engng, 8, pp. 121-136, (2005); Dixon S.J., Batt M.E., Collop A.C., Artificial playing surfaces research: A review of medical, engineering and biomechanical aspects, Int. J. Sports Medicine, 20, pp. 209-218, (1999); Nigg B.M., Cole G.K., Stefanyshyn D.J., Impact forces during exercise and sport activities, Sports Surfaces, pp. 13-29, (2003); Stiles V.H., James I.T., Dixon S.J., Guisasola I.N., Natural turf surfaces: The case for continued research, Int. J. Sports Medicine, 39, 1, pp. 1-20, (2009); Dixon S.J., James I.T., Blackburn D.W.K., Pettican N., Low D., Influence of footwear and soil density on loading within the shoe and soil surface during running, Proc. IMechE, Part P: J. Sports Engineering and Technology, 222, 1, pp. 1-10, (2008); Stiles V.H., Dixon S.J., Guisasola I.N., James I.T., Kinematic response to variations in natural turf during running, The Engineering of Sport 7, 1, pp. 499-508, (2008); Dury P.L.K., Grounds Maintenance: Managing Outdoor Sport and Landscape Facilities, (1997); Holmes G., Bell M.J., A pilot study of the playing quality of football pitches, J. Sports Turf Res. Inst., 62, pp. 74-90, (1986); Canaway P.M., Bell M.J., Holmes G., Baker S.W., Standards for the playing quality of natural turf for association football, Natural and Artificial Playing Fields: Characteristics and Safety Features, pp. 29-47, (1990); Murphy J.P., Baker S.W., The development of performance standards for the quality of surface levels of artificial turf sports pitches, J. Sports Turf Res. Inst., 65, pp. 115-133, (1989); Baker S.W., Temporal variation of selected mechanical properties of natural turf football pitches, J. Sports Turf Res. Inst., 67, pp. 83-92, (1991); Natural Grass Construction Upgrade Performance Quality Standard, (2004); Jennings-Temple M.A., Linking Soil Moisture Status of Winter Sports Pitches to Measures of Playing Quality, (2006); Guidelines for Performance Quality Standards Part One: Sports Surfaces Natural and Non Turf, (2001); Grounds Maintenance. Part 3: Recommendations for Maintenance of Amenity and Functional Turf (Other Than Sports Turf), (1991); Canaway P.M., Bell M.J., Technical note: An apparatus measuring traction and friction on natural and artificial playing surfaces, J. Sports Turf Res. Inst., 62, pp. 211-214, (1986); Clegg B., An impact testing device for in situ base course evaluation, Aust. Road Res. Bur. Proc., 8, pp. 1-6, (1976); Lush W.M., Objective assessment of turf cricket pitches using an impact hammer, J. Sports Turf Res. Inst., 61, pp. 71-79, (1985); Cricket Performance Quality Standards, (2004); James D.M., Carre M.J., Haake S.J., Predicting the playing character of cricket pitches, Sports Engng, 8, 4, pp. 193-208, (2005); Greenacre M., Correspondence Analysis in Practice, (2007); Richards C.W., Baker S.W., The effect of sward height on ball roll properties for association football, J. Sports Turf Res. Inst., 68, pp. 124-127, (1992); Williams R.B., Harkin L.S., Hammond C.J., Wood J.L.N., Predominance of tendon injuries on British racecourses (flat racing and National hunt racing), Proceedings of the 13th International Conference of Racing Analysts and Veterinarians, 2001, pp. 274-277, (2000); Adams W.A., Young R.J., Baker S.W., Some soil and turf factors affecting playing characteristics of premier cricket pitches in the UK, Int. Turfgrass Res. Soc. J., 9, pp. 451-457, (2001); Baker S.W., Hammond L.K.F., Owen A., Adams W.A., Soil physical properties of first class cricket pitches in England and Wales. II. Influence of soil type and pitch preparation on playing quality, J. Turfgrass Sports Surf. Sci., 79, pp. 13-20, (2003)","M. D. Bartlett; School of Applied Sciences, Centre for Sports Surface Technology, Cranfield University, Cranfield, Bedfordshire, MK43 0AL, College Road, United Kingdom; email: m.d.bartlett@cranfield.ac.uk","","","1754338X","","","","English","Proc. Inst. Mech. Eng. Part P J. Sports Eng. Technol.","Article","Final","","Scopus","2-s2.0-70350589045" "Taylor J.M.; Macpherson T.W.; McLaren S.J.; Spears I.; Weston M.","Taylor, Jonathan M. (55863688100); Macpherson, Tom W. (56562746400); McLaren, Shaun J. (56694156100); Spears, Iain (6701853909); Weston, Matthew (15078795800)","55863688100; 56562746400; 56694156100; 6701853909; 15078795800","Two weeks of repeated-sprint training in soccer: To turn or not to turn?","2016","International Journal of Sports Physiology and Performance","11","8","","998","1004","6","28","10.1123/ijspp.2015-0608","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85008156075&doi=10.1123%2fijspp.2015-0608&partnerID=40&md5=cae2dfae2c52ac3016b14734eaa3dc41","Dept. of Sport and Exercise Sciences, Teesside University, Middlesbrough, United Kingdom","Taylor J.M., Dept. of Sport and Exercise Sciences, Teesside University, Middlesbrough, United Kingdom; Macpherson T.W., Dept. of Sport and Exercise Sciences, Teesside University, Middlesbrough, United Kingdom; McLaren S.J., Dept. of Sport and Exercise Sciences, Teesside University, Middlesbrough, United Kingdom; Spears I., Dept. of Sport and Exercise Sciences, Teesside University, Middlesbrough, United Kingdom; Weston M., Dept. of Sport and Exercise Sciences, Teesside University, Middlesbrough, United Kingdom","Purpose: To compare the effects of 2 repeated-sprint training programs on fitness in soccer. Methods: Fifteen semiprofessional soccer players (age: 24 ± 4 y; body mass: 77 ± 8 kg) completed 6 repeated-sprint training sessions over a 2-week period. Players were assigned to a straight-line (STR) (n = 8; 3-4 sets of 7 × 30 m) or change of direction (CoD) (n = 7; 3-4 sets of 7 × 20-m) repeated-sprint training group. Performance measures included 5-, 10-, and 20-m sprints, countermovement jump, Illinois agility, and Yo-Yo Intermittent Recovery Test level 1 (YYIRTL1) performance. Internal (heart rate) and external (global positioning system-derived measures) training loads were monitored throughout. Data were analyzed using magnitude-based inferences. Results: Internal and external loads were higher in the STR group than in the CoD group with large differences in maximum velocity (28.7%; ±90% confidence limits, 3.3%), moderate differences in mean heart rates (7.0%; ±1.4%) and PlayerLoad (17.6%; ±8.6%), and small differences in peak heart rates (3.0%; ±1.6%). Large improvements in 5-m (STR: 9.6%; ±7.0% and CoD: 9.4%; ±3.3%), 10-m (STR: 6.6%; ±4.6% and CoD: 6.7%; ±2.2%), and 20-m (STR: 3.6; ±4.0% and CoD: 4.0; ±1.7%) sprints were observed. Large and moderate improvements in YYIRTL1 performance were observed in the STR (24.0%; ±9.3%) and CoD (31.0%; ±7.5%), respectively. Between-groups differences in outcome measures were unclear. Conclusions: Two weeks of repeated-sprint training stimulates improvements in acceleration, speed, and high-intensity running performance in soccer players. Despite STR inducing higher internal and external training loads, training adaptations were unclear between training modes, indicating a need for further research. © 2016 Human Kinetics, Inc.","HIT; Shuttle sprinting; Soccer training; Training load","Acceleration; Adaptation, Physiological; Adult; Athletic Performance; Biomechanical Phenomena; Geographic Information Systems; Heart Rate; High-Intensity Interval Training; Humans; Male; Muscle Strength; Physical Conditioning, Human; Physical Endurance; Psychomotor Performance; Running; Soccer; Time and Motion Studies; Time Factors; Young Adult; acceleration; adult; agility; clinical article; global positioning system; heart rate; human; Illinois; running; soccer player; young adult; adaptation; athletic performance; biomechanics; comparative study; endurance; exercise; geographic information system; high intensity interval training; male; muscle strength; procedures; psychomotor performance; running; soccer; task performance; time factor","Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer: An update, Sports Med., 35, 6, pp. 501-536, (2005); Buchheit M., Laursen P.B., High-intensity interval training, solutions to the programming puzzle. Part I: Cardiopulmonary emphasis, Sports Med., 43, 5, pp. 313-338, (2013); Taylor J., Macpherson T., Spears I., Weston M., The effects of repeated-sprint training on field-based fitness measures: A meta-analysis of controlled and non-controlled trials, Sports Med., 45, pp. 881-891, (2015); Iaia F.M., Rampinini E., Bangsbo J., High-intensity training in football, Int J Sports Physiol Perform., 4, pp. 291-306, (2009); Macpherson T.W., Weston M., The effect of low-volume sprint interval training on the development and subsequent maintenance of aerobic fitness in soccer players, Int J Sports Physiol Perform., 10, 3, pp. 332-338, (2015); Mohr M., Krustrup P., Yo-yo intermittent recovery test performances within an entire football league during a full season, J Sports Sci., 32, 4, pp. 315-327, (2014); Hader K., Mendez-Villanueva A., Ahmaidi S., Williams B., Buchheit M., Changes of direction during high-intensity intermittent runs: Neuromuscular and metabolic responses, BMC Sports Sci Med Rehabil., 6, (2014); Buchheit M., Bishop D., Haydar B., Nakamura F.Y., Ahmaidi S., Physiological responses to shuttle repeated-sprint running, Int J Sports Med., 31, pp. 402-409, (2010); Ashton R.E., Twist C., Number of directional changes alters the physiological, perceptual, and neuromuscular responses of netball players during intermittent shuttle running, J Strength Cond Res., 29, pp. 2731-2737, (2015); Attene G., Laffaye G., Chaouachi A., Pizzolato F., Migliaccio G.M., Padulo J., Repeated sprint ability in young basketball players: One vs. Two changes of direction (part 2), J Sports Sci., 33, 15, pp. 1553-1563, (2015); Impellizzeri F.M., Rampinini E., Coutts A.J., Sassi A., Marcora S.M., Use of RPE-based training load in soccer, Med Sci Sports Exerc., 36, 6, pp. 1042-1047, (2004); Mujika I., The alphabet of sport science support starts with Q, Int J Sports Physiol Perform., 8, pp. 465-466, (2013); Buchheit M., Haydar B., Ahmaidi S., Repeated sprints with directional changes: Do angles matter?, J Sports Sci., 30, 6, pp. 555-562, (2012); Gibala M.J., Little J.P., Van Essen M., Et al., Short-term sprint interval versus traditional endurance training: Similar initial adaptations in human skeletal muscle and exercise performance, J Physiol., 575, 3, pp. 901-911, (2006); Caldwell B.P., Peters D.M., Seasonal variation in physiological fitness of a semi-professional soccer team, J Strength Cond Res., 23, 5, pp. 1370-1377, (2009); Hopkins W.G., Assigning subjects to groups in a controlled trial, Sportscience., 14, pp. 7-12, (2010); Buchheit M., Laursen P.B., High-intensity interval training, solutions to the programming puzzle. Part II: Anaerobic energy, neuromuscular load and practical applications, Sports Med., 43, pp. 927-954, (2013); Glatthorn J.F., Gouge S., Nussbaumer S., Stauffacher S., Impellizzeri F.M., Maffiuletti N.A., Validity and reliability of optojump photoelectric cells for estimating vertical jump height, J Strength Cond Res., 25, 2, pp. 556-560, (2011); Hoffman J., Norms for Fitness, Performance and Health, pp. 107-115, (2006); Hachana Y., Chaabene H., Nabli M.A., Et al., Test-retest reliability, criterion-related validity, and minimal detectable change of the Illinois agility test in male team sport athletes, J Strength Cond Res., 27, 10, pp. 2752-2759, (2013); Krustrup P., Mohr M., Amstrup T., Et al., The yo-yo intermittent recovery test: Physiological response, reliability, and validity, Med Sci Sports Exerc., 35, 4, pp. 697-705, (2003); Fanchini M., Schena F., Castagna C., Et al., External responsiveness of the yo-yo IR test level 1 in high-level male soccer players, Int J Sports Med., 36, pp. 735-741, (2015); Hopkins W.G., Spreadsheets for analysis of controlled trials, with adjustment for a subject characteristic, Sportsscience, 10, pp. 46-50, (2006); Batterham A.M., Hopkins W.G., Making meaningful inferences about magnitudes, Int J Sports Physiol Perform, 1, 1, pp. 50-57, (2006); Dawson B., Fitzsimons M., Green S., Goodman C., Carey M., Cole K., Changes in performance, muscle metabolites, enzymes and fibre types after short sprint training, Eur J Appl Physiol Occup Physiol., 78, pp. 163-169, (1998); Ferrari Bravo D., Impellizzeri F.M., Rampinini E., Castagna C., Bishop D., Wisloff U., Sprint vs. Interval training in football, Int J Sports Med., 29, pp. 668-674, (2008); Markovic G., Jukic I., Milanovic D., Metikos D., Effects of sprint and plyometric training on muscle function and athletic performance, J Strength Cond Res., 21, 2, pp. 543-549, (2007); Buchheit M., Mendez-Villanueva A., Delhomel G., Brughelli M., Ahmaidi S., Improving repeated sprint ability in young elite soccer players: Repeated shuttle sprints vs. Explosive strength training, J Strength Cond Res., 24, 10, pp. 2715-2722, (2010); Faude O., Koch T., Meyer T., Straight sprinting is the most frequent action in goal situations in professional football, J Sports Sci., 30, 7, pp. 625-631, (2012); Ross A., Leveritt M., Long-term metabolic and skeletal muscle adaptations to short-sprint training, Sports Med., 31, 15, pp. 1063-1082, (2001); Creer A.R., Ricard M.D., Conley R.K., Hoyt G.L., Parcell A.C., Neural, metabolic, and performance adaptations to four weeks of high intensity sprint-interval training in trained cyclists, Int J Sports Med., 25, pp. 92-98, (2004); Buchheit M., Should we be recommending repeated sprints to improve repeated-sprint performance?, Sports Med., 42, 2, pp. 169-172, (2012); Schimpchen J., Skorski S., Nopp S., Meyer T., Are ""classical"" tests of repeated-sprint ability in football externally valid? A new approach to determine in-game sprinting behaviour in elite football players, J Sports Sci., 34, pp. 519-526, (2016); Jennings D., Cormack S., Coutts A.J., Boyd L., Aughey R.J., The validity and reliability of GPS units for measuring distance in team sport specific running patterns, Int J Sports Physiol Perform., 5, pp. 328-341, (2010); Weston M., Siegler J., Bahnert A., McBrien J., Lovell R., The application of differential ratings of perceived exertion to Australian football league matches, J Sci Med Sport., 18, pp. 704-708, (2015); Mendez-Villanueva A., Buchheit M., Football-specific fitness testing: Adding value or confirming evidence?, J Sports Sci., 31, 13, pp. 1503-1508, (2013)","J.M. Taylor; Dept. of Sport and Exercise Sciences, Teesside University, Middlesbrough, United Kingdom; email: Jonathan.Taylor@tees.ac.uk","","Human Kinetics Publishers Inc.","15550265","","","26869020","English","Int. J. Sport Physiol. Perform.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85008156075" "Ball K.","Ball, Kevin (7101771783)","7101771783","Loading and performance of the support leg in kicking","2013","Journal of Science and Medicine in Sport","16","5","","455","459","4","33","10.1016/j.jsams.2012.10.008","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881617546&doi=10.1016%2fj.jsams.2012.10.008&partnerID=40&md5=53f2aae0f81a8362a3c8d03cef888ebb","Institute of Sport, Exercise and Active Living, School of Sport and Exercise Science, Victoria University, Melbourne, Australia","Ball K., Institute of Sport, Exercise and Active Living, School of Sport and Exercise Science, Victoria University, Melbourne, Australia","The punt kick is important in many football codes and support leg kinematics and ground reaction forces have been implicated in injury and performance in kicking. Objectives: To evaluate ground reaction forces and support leg kinematics in the punt kick. Design: Cross sectional study. Methods: Seven elite Australian football players performed maximal kicks into a net using both the preferred and non-preferred legs. A force plate measured ground reaction forces and an optical motion capture system (200. Hz) collected kinematic data during the stance phase of the kick. Preferred and non-preferred legs were compared and performance was evaluated by correlating parameters with foot speed at ball contact. Results: Vertical forces were larger than running at a similar speed but did not reach levels that might be considered an injury risk. Braking forces were directed solely posteriorly, as for soccer kicks, but lateral force patterns varied with some players experiencing greater forces medially and others laterally. A more extended support leg, larger peak vertical and braking force during the stance phase and a shorter stance contact time was associated with larger kick leg foot speed at ball contact. No difference existed between the preferred and non-preferred legs for ground reaction forces or support leg mechanics. Conclusions: To punt kick longer, a straighter support leg, less time on the ground and stronger braking should be encouraged. Conditioning the support leg to provide stronger braking potential is recommended. © 2012 Sports Medicine Australia.","Australian football; Force plate; Injury","Biomechanical Phenomena; Cross-Sectional Studies; Football; Humans; Leg; Male; Young Adult; Australian football; Force plate; Injury; adult; article; clinical article; football; ground reaction force; human; kinematics; knee function; leg movement; motor activity; motor performance; punt kick; running; standing","Ball K., Foot interaction during kicking in Australian rules football, Science and football VI, pp. 36-40, (2008); Hosford G., Meikle D., The science of kicking, (2007); Lees A., Asai T., Andersen T.B., Et al., The biomechanics of kicking in soccer: a review, J Sports Sci, 28, pp. 805-817, (2010); Kermond J., Konz S., Support leg loading in punt kicking, Res Q, 49, pp. 71-79, (1978); Orloff H., Sumida B., Chow J., Et al., Ground reaction forces and kinematics of plant leg position during instep kicking in male and female collegiate soccer players, Sports Biomech, 7, pp. 238-247, (2008); Katis A., Kellis E., Three-dimensional kinematics and ground reaction forces during the instep and outstep soccer kicks in pubertal players, J Sports Sci, 28, 11, pp. 1233-1239, (2010); Lees A., Nolan L., Biomechanics of soccer: a review, J Sports Sci, 16, pp. 211-234, (1998); Dichiera A., Webster K.E., Kuilboer L., Et al., Kinematic patterns associated with accuracy of the drop punt kick in Australian football, J Sci Med Sport, 9, pp. 292-298, (2006); Ball K., Kinematic comparison of the preferred and non-preferred foot punt kick, J Sports Sci, 29, 14, pp. 1545-1562, (2011); Ball K., Biomechanical considerations of distance kicking in Australian Rules football, Sports Biomech, 7, pp. 10-23, (2011); Nunome H., Asai T., Yasuo Ikegami Y., Sakura S., A three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med Sci Sports Exerc, 34, pp. 2028-2036, (2002); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, J Sp Sci, 24, pp. 529-541, (2006); Cohen J., Statistical power analysis for the behavioural sciences, (1988); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Med Sci Sports Exerc, 36, pp. 1017-1028, (2004); Bus S.A., Ground reaction forces and kinematics in distance running in older-aged men, Med Sci Sports Exerc, 35, 7, pp. 1167-1175, (2003); McClay I.S., Robinson J.R., Andriacchi T.P., Et al., A profile of ground reaction forces in professional basketball, J Appl Biomech, 10, pp. 222-236, (1994); Deporte E., Van Gheluwe B., Ground reaction forces and moments in javelin throwing, Biomechanics XI-B, pp. 575-581, (1988); Elliot B.C., Back injuries and the fast bowler in cricket, J Sports Sci, 18, pp. 983-991, (2000); Ball K., Horgan B., Performance analysis of kicking and striking skills in Gaelic sports, World congress of performance analysis in sport, (2012); Weyand P.G., Sternlight D.B., Bellizzi M.J., Et al., Faster top running speeds are achieved with greater ground forces not more rapid leg movements, J Appl Physiol, 89, 5, pp. 1991-1999, (2000); Chew-Bullock T., Mayo A.M., Schleihauf R.C., Et al., One-legged postural stability predicts kicking velocity and accuracy, J Sport Exerc Psychol, 29, SUPPL., (2007); Hrysomallis C., McLaughlin P., Goodman C., Relationship between static and dynamic balance tests among elite Australian footballers, J Sci Med Sport, 9, 4, pp. 288-291, (2006); Inoue K., Nunomw H., Sterzing T., Hironari S., Ikegami Y., Kinetic analysis of the support leg in kicking, Proceedings of the 30th conference of the international society of biomechanics in sports, pp. 21-24, (2012)","K. Ball; Institute of Sport, Exercise and Active Living, School of Sport and Exercise Science, Victoria University, Melbourne, Australia; email: kevin.ball@vu.edu.au","","","18781861","","JSMSF","23238300","English","J. Sci. Med. Sport","Article","Final","","Scopus","2-s2.0-84881617546" "Roza T.D.; Brandão S.; Oliveira D.; Mascarenhas T.; Parente M.; Duarte J.A.; Jorge R.N.","Roza, Thuane Da (54960979400); Brandão, Sofia (36476041900); Oliveira, Dulce (54787968900); Mascarenhas, Teresa (58429876600); Parente, Marco (8234082200); Duarte, José Alberto (35560897100); Jorge, Renato Natal (9633789100)","54960979400; 36476041900; 54787968900; 58429876600; 8234082200; 35560897100; 9633789100","Football practice and urinary incontinence: Relation between morphology, function and biomechanics","2015","Journal of Biomechanics","48","9","","1587","1592","5","27","10.1016/j.jbiomech.2015.03.013","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930541168&doi=10.1016%2fj.jbiomech.2015.03.013&partnerID=40&md5=dda7821a1027df5749d21f2a7e42451b","INEGI, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, s/n, Porto, 4200-465, Portugal; Faculty of Sport, University of Porto, Research Centre in Physical Activity, Health and Leisure, Rua Dr. Plácido Costa, 91, Porto, 4200-450, Portugal; Department of Radiology, Centro Hospitalar de São João - EPE, Alameda Prof. Hernâni Monteiro, Porto, 4200-319, Portugal; Department of Gynecology and Obstetrics, Centro Hospitalar de São João - EPE, Faculty of Medicine, University of Porto, Alameda Prof. Hernâni Monteiro, Porto, 4200-319, Portugal","Roza T.D., INEGI, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, s/n, Porto, 4200-465, Portugal, Faculty of Sport, University of Porto, Research Centre in Physical Activity, Health and Leisure, Rua Dr. Plácido Costa, 91, Porto, 4200-450, Portugal; Brandão S., INEGI, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, s/n, Porto, 4200-465, Portugal, Department of Radiology, Centro Hospitalar de São João - EPE, Alameda Prof. Hernâni Monteiro, Porto, 4200-319, Portugal; Oliveira D., INEGI, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, s/n, Porto, 4200-465, Portugal; Mascarenhas T., Department of Gynecology and Obstetrics, Centro Hospitalar de São João - EPE, Faculty of Medicine, University of Porto, Alameda Prof. Hernâni Monteiro, Porto, 4200-319, Portugal; Parente M., INEGI, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, s/n, Porto, 4200-465, Portugal; Duarte J.A., Faculty of Sport, University of Porto, Research Centre in Physical Activity, Health and Leisure, Rua Dr. Plácido Costa, 91, Porto, 4200-450, Portugal; Jorge R.N., INEGI, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, s/n, Porto, 4200-465, Portugal","Current evidence points to a high prevalence of urinary incontinence among female athletes. In this context, this study aims to assess if structural and biomechanical characteristics of the pubovisceral muscles may lead to urine leakage. Clinical and demographic data were collected, as well as pelvic Magnetic Resonance Imaging. Furthermore, computational models were built to verify if they were able to reproduce similar biomechanical muscle response as the one measured by dynamic imaging during active contraction by means of the percent error. Compared to the continent ones (n=7), incontinent athletes (n=5) evidenced thicker pubovisceral muscles at the level of the midvagina (p=0.019 and p=0.028 for the right and left sides, respectively). However, there were no differences neither in the strength of contraction in the Oxford Scale or in the displacement of the pelvic floor muscles during simulation of voluntary contraction, which suggests that urine leakage may be related with alterations in the intrafusal fibers than just the result of thicker muscles. Additionally, we found similar values of displacement retrieved from dynamic images and numerical models (6.42±0.36. mm vs. 6.10±0.47. mm; p=0.130), with a percent error ranging from 1.47% to 17.20%. However, further refinements in the mechanical properties of the striated skeletal fibers of the pelvic floor muscles and the inclusion of pelvic organs, fascia and ligaments would reproduce more realistically the pelvic cavity. © 2015 Elsevier Ltd.","Athletes; Finite element method; Magnetic Resonance Imaging; Sports practice; Stress urinary incontinence","Adult; Athletes; Biomechanical Phenomena; Computer Simulation; Cross-Sectional Studies; Female; Humans; Ligaments; Magnetic Resonance Imaging; Muscle Contraction; Muscle Fibers, Skeletal; Pelvic Floor; Pilot Projects; Soccer; Urinary Incontinence; Vagina; Young Adult; Biomechanics; Finite element method; Floors; Football; Magnetic resonance imaging; Morphology; Urology; Athletes; Biomechanical characteristics; Computational model; Demographic data; Muscle response; Stress urinary incontinences; Urinary incontinence; Voluntary contraction; adult; age; Article; athlete; biomechanics; body mass; clinical article; controlled study; female; football; human; intrafusal muscle fiber; morphology; muscle function; muscle strength; nuclear magnetic resonance imaging; Oxford Scale; pelvis floor; physical activity; priority journal; rating scale; risk assessment; risk factor; self report; simulation; urine incontinence; biomechanics; computer simulation; cross-sectional study; ligament; muscle contraction; pathology; pathophysiology; pelvis floor; pilot study; skeletal muscle; soccer; urine incontinence; vagina; young adult; Muscle","Ashton-Miller J.A., DeLancey J.O., Functional anatomy of the female pelvic floor, Ann. N. Y. Acad. Sci., 1101, pp. 266-296, (2007); Avery K., Donovan J., Peters T.J., Shaw C., Gotoh M., Abrams P., ICIQ: a brief and robust measure for evaluating the symptoms and impact of urinary incontinence, Neurourol. Urodyn., 23, pp. 322-330, (2004); Bo K., Urinary incontinence, pelvic floor dysfunction, exercise and sport, Sports Med., 34, pp. 451-464, (2004); Bo K., Berghmans B., Morkved S., Van Kampen M., Evidence based physical therapy for the pelvic floor: Bridging Science and Clinical Practice, (2007); Bo K., Finckenhagen H.B., Vaginal palpation of pelvic floor muscle strength: inter-test reproducibility and comparison between palpation and vaginal squeeze pressure, Acta Obstet. Gynecol. Scand., 80, pp. 883-887, (2001); Bo K., Kvarstein B., Hagen R.R., Larsen S., Pelvic floor muscle exercise for the treatment of female stress urinary incontinence: II. Validity of vaginal pressure measurements of pelvic floor muscle strength and the necessity of supplementary methods for control of correct contraction, Neurourol. Urodyn., pp. 479-487, (1990); Bo K., Stien R., Kulseng-Hanssen S., Kristofferson M., Clinical and urodynamic assessment of nulliparous young women with and without stress incontinence symptoms: a case-control study, Obstet. Gynecol., 84, pp. 1028-1032, (1994); Brandao S., Da Roza T., Mascarenhas T., Duarte S., Ramos I., Parente M., Jorge R.N., Moment of inertia as a means to evaluate the biomechanical impact of pelvic organ prolapse, Int. J. Urol.: Off. J. Jpn. Urol. Association, 20, pp. 86-92, (2013); Brandao S., Parente M., Mascarenhas T., da Silva A.R., Ramos I., Jorge R.N., Biomechanical study on the bladder neck and urethral positions: simulation of impairment of the pelvic ligaments, J. Biomech., 48, pp. 217-223, (2015); Chen L., Ashton-Miller J.A., DeLancey J.O., A 3D finite element model of anterior vaginal wall support to evaluate mechanisms underlying cystocele formation, J. Biomech., 42, pp. 1371-1377, (2009); Chen L., Ashton-Miller J.A., Hsu Y., DeLancey J.O., Interaction among apical support, levator ani impairment, and anterior vaginal wall prolapse, Obstet. Gynecol., 108, pp. 324-332, (2006); d'Aulignac D., Martins J.A., Pires E.B., Mascarenhas T., Jorge R.M., A shell finite element model of the pelvic floor muscles, Comput. Methods Biomech. Biomed. Eng., 8, pp. 339-347, (2005); Da Roza T., Brandao S., Mascarenhas T., Jorge R.N., Duarte J.A., Volume of training and the ranking level are associated with the leakage of urine in young female trampolinists, Clin. J. Sport Med.: Off. J. Can. Acad. Sport Med., (2014); da Silva-Filho A.L., Martins P.A., Parente M.P., Saleme C.S., Roza T., Pinotti M., Mascarenhas T., Natal Jorge R.M., Translation of biomechanics research to urogynecology, Arch. Gynecol. Obstet., 282, pp. 149-155, (2010); DeLancey J.O., The anatomy of the pelvic floor, Curr. Opin. Obstet. Gynecol., 6, pp. 313-316, (1994); Dietz H.P., Shek C., Levator avulsion and grading of pelvic floor muscle strength, Int. Urogynecol. J. Pelvic Floor Dysfunct., 19, pp. 633-636, (2008); Dorschner W., Stolzenburg J.U., A new theory of micturition and urinary continence based on histomorphological studies. 3. The two parts of the musculus sphincter urethrae: physiological importance for continence in rest and stress, Urol. Int., 52, pp. 185-188, (1994); Eliasson K., Edner A., Mattsson E., Urinary incontinence in very young and mostly nulliparous women with a history of regular organised high-impact trampoline training: occurrence and risk factors, Int. Urogynecol. J. Pelvic Floor Dysfunct., 19, pp. 687-696, (2008); Eliasson K., Larsson T., Mattsson E., Prevalence of stress incontinence in nulliparous elite trampolinists, Scand. J. Med. Sci. Sports, 12, pp. 106-110, (2002); Eliasson K., Nordlander I., Larson B., Hammarstrom M., Mattsson E., Influence of physical activity on urinary leakage in primiparous women, Scand. J. Med. Sci. Sports, 15, pp. 87-94, (2005); Gregory W.T., Nardos R., Worstell T., Thurmond A., Measuring the levator hiatus with axial MRI sequences: adjusting the angle of acquisition, Neurourol. Urodyn., 30, pp. 113-116, (2011); Humphrey J.D., Yin F.C., On constitutive relations and finite deformations of passive cardiac tissue: I. A pseudostrain-energy function, J. Biomech. Eng., 109, pp. 298-304, (1987); Janda S., Biomechanics of the Pelvic Floor Musculature, (2006); Kruger J.A., Dietz H.P., Murphy B.A., Pelvic floor function in elite nulliparous athletes, Ultrasound Obstet. Gynecol.: Off. J. Int. Soc. Ultrasound Obstet. Gynecol., 30, pp. 81-85, (2007); Kruger J.A., Murphy B.A., Heap S.W., Alterations in levator ani morphology in elite nulliparous athletes: a pilot study, Aust. N. Z. J. Obstet. Gynaecol., 45, pp. 42-47, (2005); Martins G., Soler Z.A., Cordeiro J.A., Amaro J.L., Moore K.N., Prevalence and risk factors for urinary incontinence in healthy pregnant Brazilian women, Int. Urogynecol. J., 21, pp. 1271-1277, (2010); Ree M.L., Nygaard I., Bo K., Muscular fatigue in the pelvic floor muscles after strenuous physical activity, Acta Obstet. Gynecol. Scand., 86, pp. 870-876, (2007); Tamanini J.T., Dambros M., D'Ancona C.A., Palma P.C., Rodrigues Netto N., Validation of the ""International Consultation on Incontinence Questionnaire - Short Form"" (ICIQ-SF) for Portuguese, Revista de saude publica, 38, pp. 438-444, (2004); Yeoh O.H., Some forms of the strain energy functin for rubber, Rubber Chem. Technol., 66, pp. 754-771, (1993)","T.D. Roza; Porto, Rua Dr Roberto Frias, s/n, 4200-465, Portugal; email: thuaneroza@yahoo.com.br","","Elsevier Ltd","00219290","","JBMCB","25835786","English","J. Biomech.","Article","Final","","Scopus","2-s2.0-84930541168" "Schmidt E.C.; Chin M.; Aoyama J.T.; Ganley T.J.; Shea K.G.; Hast M.W.","Schmidt, Elaine C. (57204464255); Chin, Matthew (57200627017); Aoyama, Julien T. (57200818980); Ganley, Theodore J. (6701741203); Shea, Kevin G. (7102870065); Hast, Michael W. (57090260900)","57204464255; 57200627017; 57200818980; 6701741203; 7102870065; 57090260900","Mechanical and Microstructural Properties of Pediatric Anterior Cruciate Ligaments and Autograft Tendons Used for Reconstruction","2019","Orthopaedic Journal of Sports Medicine","7","1","","","","","34","10.1177/2325967118821667","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85060676030&doi=10.1177%2f2325967118821667&partnerID=40&md5=37e476f05f5a5000b4d3f137e3a52a83","Biedermann Laboratory for Orthopaedic Research, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, United States; Children’s Hospital of Philadelphia, Philadelphia, PA, United States; Department of Orthopaedic Surgery, Stanford University, Stanford, CA, United States","Schmidt E.C., Biedermann Laboratory for Orthopaedic Research, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, United States; Chin M., Biedermann Laboratory for Orthopaedic Research, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, United States; Aoyama J.T., Children’s Hospital of Philadelphia, Philadelphia, PA, United States; Ganley T.J., Children’s Hospital of Philadelphia, Philadelphia, PA, United States; Shea K.G., Department of Orthopaedic Surgery, Stanford University, Stanford, CA, United States; Hast M.W., Biedermann Laboratory for Orthopaedic Research, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, United States","Background: Over the past several decades, there has been a steady increase in pediatric anterior cruciate ligament (ACL) tears, particularly in young female basketball and soccer players. Because allograft tissue for pediatric ACL reconstruction (ACLR) has shown high rates of failure, autograft tissue may be the best option for ACLR in this population. However, differences in the structure and mechanical behavior of these tissues are not clear. Purpose: To characterize the mechanical and microstructural properties in pediatric ACLs and autograft tissues using a rare cadaveric cohort (mean age, 9.2 years). Study Design: Descriptive laboratory study. Methods: ACLs, patellar tendons, quadriceps tendons, semitendinosus tendons, and iliotibial bands (ITBs) were harvested from 5 fresh-frozen pediatric knee specimens (3 male, 2 female) and subjected to a tensile loading protocol. A subset of contralateral tissues was analyzed using bright-field, polarized light, and transmission electron microscopy. Results: Patellar tendons exhibited values for ultimate stress (5.2 ± 3.1 MPa), ultimate strain (35.3% ± 12.5%), and the Young modulus (27.0 ± 8.8 MPa) that were most similar to the ACLs (5.2 ± 2.2 MPa, 31.4% ± 9.9%, and 23.6 ± 15.5 MPa, respectively). Semitendinosus tendons and ITBs were stronger but less compliant than the quadriceps or patellar tendons. ITBs exhibited crimp wavelengths (27.0 ± 2.9 μm) and collagen fibril diameters (67.5 ± 19.5 nm) that were most similar to the ACLs (24.4 ± 3.2 μm and 65.3 ± 19.9 nm, respectively). Conclusion: The mechanical properties of the patellar tendon were almost identical to those of the ACL. The ITB exhibited increased strength and a similar microstructure to the native ACL. These findings are not entirely congruent with studies examining adult tissues. Clinical Relevance: These results can be used to inform further clinical research. In particular, they justify a further examination of the biomechanical and microstructural properties of the ITB in the context of its role as an autograft tissue in pediatric ACL reconstruction. © The Author(s) 2019.","ACL reconstruction; hamstring grafts; mechanical properties; microstructural properties; patellar tendon grafts; pediatric; quadriceps tendon grafts","aluminum; anterior cruciate ligament; Article; basketball; biomechanics; bone graft; bone transplantation; bright field microscopy; cadaver; cell count; clinical article; clinical research; collagen fibril; comparative study; descriptive research; female; fibroblast; histology; human; iliotibial band friction syndrome; ligament surgery; male; muscle rigidity; musculoskeletal function; patellar ligament; pediatrics; polarization microscopy; priority journal; protocol compliance; quadriceps tendon; semitendinous muscle; soccer player; spectral sensitivity; structure analysis; tensile strength; three dimensional imaging; topography; transmission electron microscopy; Young modulus","Abe S., Kurosaka M., Iguchi T., Yoshiya S., Hirohata K., Light and electron microscopic study of remodeling and maturation process in autogenous graft for anterior cruciate ligament reconstruction, Arthroscopy, 9, 4, pp. 394-405, (1993); Abramowitch S.D., Zhang X., Curran M., Kilger R., A comparison of the quasi-static mechanical and nonlinear viscoelastic properties of the human semitendinosus and gracilis tendons, Clin Biomech (Bristol, Avon), 25, 4, pp. 325-331, (2010); Arbes S., Resinger C., Vecsei V., Nau T., The functional outcome of total tears of the anterior cruciate ligament (ACL) in the skeletally immature patient, Int Orthop, 31, 4, pp. 471-475, (2007); Beaulieu M.L., Carey G.E., Schlecht S.H., Wojtys E.M., Ashton-Miller J.A., On the heterogeneity of the femoral enthesis of the human ACL: microscopic anatomy and clinical implications, J Exp Orthop, 3, 1, (2016); Beynnon B.D., Fleming B.C., Anterior cruciate ligament strain in-vivo: a review of previous work, J Biomech, 31, 6, pp. 519-525, (1998); Blevins F.T., Hecker A.T., Bigler G.T., Boland A.L., Hayes W.C., The effects of donor age and strain rate on the biomechanical properties of bone-patellar tendon-bone allografts, Am J Sports Med, 22, 3, pp. 328-333, (1994); Blickenstaff K.R., Grana W.A., Egle D., Analysis of a semitendinosus autograft in a rabbit model, Am J Sports Med, 25, 4, pp. 554-559, (1997); Chandrashekar N., Hashemi J., Slauterbeck J., Beynnon B.D., Low-load behaviour of the patellar tendon graft and its relevance to the biomechanics of the reconstructed knee, Clin Biomech (Bristol, Avon), 23, 7, pp. 918-925, (2008); Courvoisier A., Grimaldi M., Plaweski S., Good surgical outcome of transphyseal ACL reconstruction in skeletally immature patients using four-strand hamstring graft, Knee Surg Sports Traumatol Arthrosc, 19, 4, pp. 588-591, (2011); Danto M.I., Woo S.L.-Y., The mechanical properties of skeletally mature rabbit anterior cruciate ligament and patellar tendon over a range of strain rates, J Orthop Res, 11, 1, pp. 58-67, (1993); DeLee J., Curtis R., Anterior cruciate ligament insufficiency in children, Clin Orthop Relat Res, 172, pp. 112-118, (1983); Diamant J., Keller A., Baer E., Litt M., Arridge R.G.C., Collagen: ultrastructure and its relation to mechanical properties as a function of ageing, Proc R Soc Lond B Biol Sci, 180, 1060, pp. 293-315, (1972); Dodwell E.R., LaMont L.E., Green D.W., Pan T.J., Marx R.G., Lyman S., 20 years of pediatric anterior cruciate ligament reconstruction in New York State, Am J Sports Med, 42, 3, pp. 675-680, (2014); Ellis H.B., Matheny L.M., Briggs K.K., Pennock A.T., Steadman J.R., Outcomes and revision rate after bone–patellar tendon–bone allograft versus autograft anterior cruciate ligament reconstruction in patients aged 18 years or younger with closed physes, Arthroscopy, 28, 12, pp. 1819-1825, (2012); Frank J.S., Gambacorta P.L., Anterior cruciate ligament injuries in the skeletally immature athlete: diagnosis and management, J Am Acad Orthop Surg, 21, 2, pp. 78-87, (2013); Friederich N.F., O'Brien W.R., Anterior cruciate ligament graft tensioning versus knee stability, Knee Surg Sports Traumatol Arthrosc, 6, 1, pp. S38-S42, (1998); Gottschalk A.W., Andrish J.T., Epidemiology of sports injury in pediatric athletes, Sports Med Arthrosc Rev, 19, 1, pp. 2-6, (2011); Hadjicostas P.T., Soucacos P.N., Koleganova N., Krohmer G., Berger I., Comparative and morphological analysis of commonly used autografts for anterior cruciate ligament reconstruction with the native ACL: an electron, microscopic and morphologic study, Knee Surg Sports Traumatol Arthrosc, 16, 12, pp. 1099-1107, (2008); Hamner D.L., Brown C.H., Steiner M.E., Hecker A.T., Hayes W.C., Hamstring tendon grafts for reconstruction of the anterior cruciate ligament: biomechanical evaluation of the use of multiple strands and tensioning techniques, J Bone Joint Surg Am, 81, 4, pp. 549-557, (1999); Hansen K.A., Weiss J.A., Barton J.K., Recruitment of tendon crimp with applied tensile strain, J Biomech Eng, 124, 1, pp. 72-77, (2002); Harris N.L., Smith D.A., Lamoreaux L., Purnell M., Central quadriceps tendon for anterior cruciate ligament reconstruction, part I: morphometric and biomechanical evaluation, Am J Sports Med, 25, 1, pp. 23-28, (1997); Hashemi J., Chandrashekar N., Mansouri H., Slauterbeck J.R., Hardy D.M., The human anterior cruciate ligament: sex differences in ultrastructure and correlation with biomechanical properties, J Orthop Res, 26, 7, pp. 945-950, (2008); Johnson G.A., Tramaglini D.M., Levine R.E., Ohno K., Choi N.Y., Woo S.L., Tensile and viscoelastic properties of human patellar tendon, J Orthop Res, 12, 6, pp. 796-803, (1994); Kahn C.J., Wang X., Rahouadj R., Nonlinear model for viscoelastic behavior of Achilles tendon, J Biomech Eng, 132, 11, (2010); Kane P.W., Wascher J., Dodson C.C., Hammoud S., Cohen S.B., Ciccotti M.G., Anterior cruciate ligament reconstruction with bone-patellar tendon-bone autograft versus allograft in skeletally mature patients aged 25 years or younger, Knee Surg Sports Traumatol Arthrosc, 24, 11, pp. 3627-3633, (2016); 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Markolf K.L., Burchfield D.M., Shapiro M.M., Davis B.R., Finerman G.A., Slauterbeck J.L., Biomechanical consequences of replacement of the anterior cruciate ligament with a patellar ligament allograft, part I: insertion of the graft and anterior-posterior testing, J Bone Joint Surg Am, 78, 11, pp. 1720-1727, (1996); Melby A., Noble J.S., Askew M.J., Boom A.A., Hurst F.W., The effects of graft tensioning on the laxity and kinematics of the anterior cruciate ligament reconstructed knee, Arthroscopy, 7, 3, pp. 257-266, (1991); Miller K.S., Connizzo B.K., Feeney E., Tucker J.J., Soslowsky L.J., Examining differences in local collagen fiber crimp frequency throughout mechanical testing in a developmental mouse supraspinatus tendon model, J Biomech Eng, 134, 4, (2012); Noyes F.R., Butler D.L., Grood E.S., Zernicke R.F., Hefzy M.S., Biomechanical analysis of human ligament grafts used in knee-ligament repairs and reconstructions, J Bone Joint Surg Am, 66, 3, pp. 344-352, (1984); Noyes F.R., Grood E.S., The strength of the anterior cruciate ligament in humans and Rhesus monkeys, J Bone Joint Surg Am, 58, 8, pp. 1074-1082, (1976); 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Woo S.L.-Y., Newton P.O., MacKenna D.A., Lyon R.M., A comparative evaluation of the mechanical properties of the rabbit medial collateral and anterior cruciate ligaments, J Biomech, 25, 4, pp. 377-386, (1992); Zhao L., Thambyah A., Broom N., Crimp morphology in the ovine anterior cruciate ligament, J Anat, 226, 3, pp. 278-288, (2015)","M.W. Hast; Biedermann Laboratory for Orthopaedic Research, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, United States; email: hast@pennmedicine.upenn.edu","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85060676030" "Harriss A.; Johnson A.M.; Walton D.M.; Dickey J.P.","Harriss, Alexandra (57200369605); Johnson, Andrew M. (7410013285); Walton, David M. (7202113617); Dickey, James P. (7102831967)","57200369605; 7410013285; 7202113617; 7102831967","Head impact magnitudes that occur from purposeful soccer heading depend on the game scenario and head impact location","2019","Musculoskeletal Science and Practice","40","","","53","57","4","36","10.1016/j.msksp.2019.01.009","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85060690607&doi=10.1016%2fj.msksp.2019.01.009&partnerID=40&md5=0b16f679f140b4a34369b84411cc3b28","Health and Rehabilitation Sciences, The University of Western Ontario, London, Ontario, Canada; School of Health Studies, The University of Western Ontario, London, Ontario, Canada; School of Physical Therapy, The University of Western Ontario, London, Ontario, Canada; School of Kinesiology, The University of Western Ontario, London, Ontario, Canada","Harriss A., Health and Rehabilitation Sciences, The University of Western Ontario, London, Ontario, Canada; Johnson A.M., Health and Rehabilitation Sciences, The University of Western Ontario, London, Ontario, Canada, School of Health Studies, The University of Western Ontario, London, Ontario, Canada; Walton D.M., School of Health Studies, The University of Western Ontario, London, Ontario, Canada, School of Physical Therapy, The University of Western Ontario, London, Ontario, Canada; Dickey J.P., School of Kinesiology, The University of Western Ontario, London, Ontario, Canada","Purpose: This study quantified the linear and angular kinematics that result from purposeful heading during youth soccer games, and the influence of game scenario and head impact location on these magnitudes. Method: This observational study recruited thirty-six female soccer players (13.4 ± 0.9 years old) from three elite youth soccer teams (U13, U14, U15) and followed for an entire soccer season. Players wore wireless sensors during each game to quantify head impact magnitudes. A total of 60 regular season games (20 games per team) were video recorded, and purposeful heading events were categorized by game scenario (e.g. throw in), and head impact location (e.g. front of head). Results: Game scenario had a statistically significant effect on the linear head acceleration, and rotational head velocity, that resulted from purposeful headers. Rotational velocity from purposeful headers varied significantly between head impact locations, with impacts to the top of the head (improper technique) resulting in larger peak rotational velocities than impacts to the front of the head (proper technique); this was also the case for the linear acceleration for punts. Conclusion: Our findings suggest that the magnitude for both linear and angular head impact kinematics depend on the game scenario and head impact location. Headers performed with the top of the head (improper technique) result in larger rotational velocities compared to the front of the head (proper technique). Accordingly, youth players should be educated on how to execute proper heading technique to reduce head impact accelerations. © 2019","Adolescent; Female; Heading; Repetitive; Youth","Adolescent; Athletic Injuries; Biomechanical Phenomena; Brain Concussion; Cumulative Trauma Disorders; Female; Humans; Soccer; Sports; adolescent; Article; biomechanics; deceleration; descriptive research; female; head injury; human; injury severity; mechanical stress; observational study; performance; priority journal; soccer; velocity; biomechanics; brain concussion; complication; cumulative trauma disorder; pathophysiology; sport; sport injury; statistics and numerical data","Bates D., Machler M., Bolker B., Walker S., Fitting linear mixed-effects models using lme4, J. Stat. 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Sport Med., 27, 2, pp. 104-110, (2017); Reynolds B.B., Patrie J., Henry E.J., Et al., Practice type effects on head impact in collegiate football, J. Neurosurg., 124, 2, pp. 501-510, (2016); Rowson S., Duma S.M., Beckwith J.G., Et al., Rotational head kinematics in football impacts: an injury risk function for concussion, Ann. Biomed. Eng., 40, 1, pp. 1-13, (2012); Rubin T.G., Catenaccio E., Fleysher R., Et al., MRI-defined white matter microstructural alteration associated with soccer heading is more extensive in women than men, Radiology, 289, 2, pp. 478-486, (2018); Ruestow P.S., Duke T.J., Finley B.L., Pierce J.S., Effects of the nfl's amendments to the free kick rule on injuries during the 2010 and 2011 seasons, J. Occup. Environ. Hyg., 12, 12, pp. 875-882, (2015); Self B.P., Beck J., Schill D., Eames C., Knox T., Plaga J., Head accelerations during soccer heading, The Engineering of Sport 6, pp. 81-86, (2016); Shewchenko N., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football. Part 2: biomechanics of ball heading and head response, Br. J. Sports Med., 39, pp. i26-32, (2005); Stewart W.F., Kim N., Ifrah C.S., Et al., Symptoms from repeated intentional and unintentional head impact in soccer players, Neurology, 88, 9, pp. 901-908, (2017); Team R., Rstudio: Integrated Development for R, (2016); USAClubSoccer, Recognize to Recover. Implementation Guidelines for Us Soccers Player Safety Campaign Concussion Initiatives- Heading for Youth Players, (2016); Yang Y.T., Baugh C.M., Us youth soccer concussion policy heading in the right direction, Jama Pediatrics, 170, 5, pp. 413-414, (2016); Zhang M.R., Red S.D., Lin A.H., Patel S.S., Sereno A.B., Evidence of cognitive dysfunction after soccer playing with ball heading using a novel tablet-based approach, PLoS One, 8, 2, (2013)","J.P. Dickey; The University of Western Ontario, School of Kinesiology, London, 1151 Richmond Street, 3M Centre, Room 3159A, N6A 3K7, Canada; email: jdickey@uwo.ca","","Elsevier Ltd","24688630","","","30708266","English","Musculoskelet. Sci. Pract.","Article","Final","","Scopus","2-s2.0-85060690607" "Augustus S.; Mundy P.; Smith N.","Augustus, Simon (57185741400); Mundy, Peter (56471408400); Smith, Neal (26427089000)","57185741400; 56471408400; 26427089000","Support leg action can contribute to maximal instep soccer kick performance: an intervention study","2017","Journal of Sports Sciences","35","1","","89","98","9","28","10.1080/02640414.2016.1156728","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961211145&doi=10.1080%2f02640414.2016.1156728&partnerID=40&md5=3ea32ef71ef7fc9055364a4ab40463fe","Chichester Institute of Sport, University of Chichester, Chichester, United Kingdom; Department of Applied Sciences and Health, Coventry University, Coventry, United Kingdom","Augustus S., Chichester Institute of Sport, University of Chichester, Chichester, United Kingdom; Mundy P., Department of Applied Sciences and Health, Coventry University, Coventry, United Kingdom; Smith N., Chichester Institute of Sport, University of Chichester, Chichester, United Kingdom","This investigation assessed whether a Technique Refinement Intervention designed to produce pronounced vertical hip displacement during the kicking stride could improve maximal instep kick performance. Nine skilled players (age 23.7 ± 3.8 years, height 1.82 ± 0.06 m, body mass 78.5 ± 6.1 kg, experience 14.7 ± 3.8 years; mean ± SD) performed 10 kicking trials prior to (NORM) and following the intervention (INT). Ground reaction force (1000 Hz) and three-dimensional motion analysis (250 Hz) data were used to calculate lower limb kinetic and kinematic variables. Paired t-tests and statistical parametric mapping examined differences between the two kicking techniques across the entire kicking motion. Peak ball velocities (26.3 ± 2.1 m · s−1 vs 25.1 ± 1.5 m · s−1) and vertical displacements of the kicking leg hip joint centre (0.041 ± 0.012 m vs 0.028 ± 0.011 m) were significantly larger (P < 0.025) when performed following INT. Further, various significant changes in support and kicking leg dynamics contributed to a significantly faster kicking knee extension angular velocity through ball contact following INT (70–100% of total kicking motion, P < 0.003). Maximal instep kick performance was enhanced following INT, and the mechanisms presented are indicative of greater passive power flow to the kicking limb during the kicking stride. © 2016 Taylor & Francis.","Biomechanics; dynamics; football; power flow; technique intervention","Adult; Athletic Performance; Biomechanical Phenomena; Foot; Hip; Hip Joint; Humans; Knee; Knee Joint; Leg; Motor Skills; Movement; Range of Motion, Articular; Soccer; Stress, Mechanical; Young Adult; adult; ground reaction force; hip; intervention study; knee; leg; motion; soccer; Student t test; velocity; athletic performance; biomechanics; evaluation study; foot; human; joint characteristics and functions; mechanical stress; motor performance; movement (physiology); young adult","Adler R.J., Taylor J.E., Random fields and geomtery, (2009); Andersen T., Dorge H.C., Thomsen F., Collisions in soccer kicking, Sports Engineering, 2, pp. 121-125, (1999); Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, Journal of Sports Sciences, 24, pp. 951-960, (2006); 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Selbie W.S., Hamill J., Kepple T.M., Three dimensional-kinetics, Research methods in biomechanics, pp. 151-176, (2014); Winter D.A., Biomechanics and motor control of human movement, (2009); Woltring H.J., A FORTRAN package for generalized, cross-validatory spline smoothing and differentiation, Advances in Engineering Software, 8, pp. 104-113, (1986)","S. Augustus; Chichester Institute of Sport, University of Chichester, Chichester, West Sussex, Bishop Otter Campus, PO19 6PE, United Kingdom; email: S.Augustus@chi.ac.uk","","Routledge","02640414","","JSSCE","26954358","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84961211145" "Nagahara R.; Morin J.-B.; Koido M.","Nagahara, Ryu (56047877300); Morin, Jean-Benoit (55917329600); Koido, Masaaki (57190752363)","56047877300; 55917329600; 57190752363","Impairment of sprint mechanical properties in an actual soccer match: A pilot study","2016","International Journal of Sports Physiology and Performance","11","7","","893","898","5","31","10.1123/ijspp.2015-0567","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85008425582&doi=10.1123%2fijspp.2015-0567&partnerID=40&md5=c7689e48707249c4f773965331747394","Sports Performance Laboratory, National Institute of Fitness and Sports in Kanoya, Kanoya, Japan; Laboratory of Human Motricity, Education Sport and Health, University of Nice Sophia Antipolis, Nice, France; Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Japan","Nagahara R., Sports Performance Laboratory, National Institute of Fitness and Sports in Kanoya, Kanoya, Japan; Morin J.-B., Laboratory of Human Motricity, Education Sport and Health, University of Nice Sophia Antipolis, Nice, France; Koido M., Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Japan","Purpose: To assess soccer-specifc impairment of mechanical properties in accelerated sprinting and its relation with activity profles during an actual match. Methods: Thirteen male feld players completed 4 sprint measurements, wherein running speed was obtained using a laser distance-measurement system, before and after the 2 halves of 2 soccer matches. Macroscopic mechanical properties (theoretical maximal horizontal force [F0], maximal horizontal sprinting power [Pmax], and theoretical maximal sprinting velocity [V0]) during the 35-m sprint acceleration were calculated from speed-time data. Players' activity profles during the matches were collected using global positioning system units. Results: After the match, although F0 and Pmax did not signifcantly change, V0 was reduced (P =.038), and the magnitude of this reduction correlated with distance (positive) and number (negative) of high-speed running, number of running (negative), and other low-intensity activity distance (negative) during the match. Moreover, Pmax decreased immediately before the second half (P =.014). Conclusions: The results suggest that soccer-specifc fatigue probably impairs players' maximal velocity capabilities more than their maximal horizontal forceproduction abilities at initial acceleration. Furthermore, long-distance running, especially at high speed, during the match may induce relatively large impairment of maximal velocity capabilities. In addition, the capability of producing maximal horizontal power during sprinting is presumably impaired during halftime of a soccer match with passive recovery. These fndings could be useful for players and coaches aiming to train effectively to maintain sprinting performance throughout a soccer match when planning a training program. © 2016 Human Kinetics, Inc.","Acceleration; Fatigue; GPS; Laser; Power","Acceleration; Athletic Performance; Biomechanical Phenomena; Competitive Behavior; Geographic Information Systems; Humans; Male; Muscle Fatigue; Oxygen Consumption; Pilot Projects; Running; Soccer; acceleration; athletic performance; biomechanics; competitive behavior; geographic information system; human; male; muscle fatigue; oxygen consumption; physiology; pilot study; running; soccer","Faude O., Koch T., Meyer T., Straight sprinting is the most frequent action in goal situations in professional football, J Sports Sci., 30, pp. 625-631, (2012); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, J Sports Sci., 21, pp. 519-528, (2003); Krustrup P., Mohr M., Steensberg A., Bencke J., Kjaer M., Bangsbo J., Muscle and blood metabolites during a soccer game: Implications for sprint performance, Med Sci Sports Exerc., 38, pp. 1165-1174, (2006); Mohr M., Krustrup P., Bangsbo J., Fatigue in soccer: A brief review, J Sports Sci., 23, pp. 593-599, (2005); Small K., McNaughton L.R., Greig M., Lohkamp M., Lovell R., Soccer fatigue, sprinting and hamstring injury risk, Int J Sports Med., 30, pp. 573-578, (2009); Greig M., The infuence of soccer-specifc fatigue on peak isokinetic torque production of the knee fexors and extensors, Am J Sports Med., 36, pp. 1403-1409, (2008); Small K., McNaughton L., Greig M., Lovell R., The effects of multidirectional soccer-specifc fatigue on markers of hamstring injury risk, J Sci Med Sport., 13, pp. 120-125, (2010); Dorn T.W., Schache A.G., Pandy M.G., Muscular strategy shift in human running: Dependence of running speed on hip and ankle muscle performance, J Exp Biol., 215, pp. 1944-1956, (2012); Lambourne K., Tomporowski P., The effect of exercise-induced arousal on cognitive task performance: A meta-regression analysis, Brain Res., 1341, pp. 12-24, (2010); Mohr M., Krustrup P., Nybo L., Nielsen J.J., Bangsbo J., Muscle temperature and sprint performance during soccer matches-benefcial effect of re-warm-up at half-time, Scand J Med Sci Sports., 14, pp. 156-162, (2004); Nagahara R., Matsubayashi T., Matsuo A., Zushi K., Kinematics of transition during human accelerated sprinting, Biol Open., 3, pp. 689-699, (2014); Nagahara R., Naito H., Miyashiro K., Morin J.B., Zushi K., Traditional and ankle-specifc vertical jumps as strength-power indicators for maximal sprint acceleration, J Sports Med Phys Fitness., 54, pp. 691-699, (2014); Nagahara R., Naito H., Morin J.B., Zushi K., Association of acceleration with spatiotemporal variables in maximal sprinting, Int J Sports Med., 35, pp. 755-761, (2014); Buchheit M., Samozino P., Glynn J.A., Et al., Mechanical determinants of acceleration and maximal sprinting speed in highly trained young soccer players, J Sports Sci., 32, pp. 1906-1913, (2014); Samozino P., Rabita G., Dorel S., Et al., A simple method for measuring power, force, velocity properties, and mechanical effectiveness in sprint running, Scand J Med Sci Sports., 26, 6, pp. 648-658, (2016); Bradley P.S., Sheldon W., Wooster B., Olsen P., Boanas P., Krustrup P., High-intensity running in English FA Premier League soccer matches, J Sports Sci., 27, pp. 159-168, (2009); Ingebrigtsen J., Dalen T., Hjelde G.H., Drust B., Wisloff U., Acceleration and sprint profles of a professional elite football team in match play, Eur J Sport Sci., 15, pp. 101-110, (2015); Aughey R.J., Applications of GPS technologies to feld sports, Int J Sports Physiol Perform., 6, pp. 295-310, (2011); Mendiguchia J., Samozino P., Martinez-Ruiz E., Et al., Progression of mechanical properties during on-feld sprint running after returning to sports from a hamstring muscle injury in soccer players, Int J Sports Med., 35, pp. 690-695, (2014); Bezodis N.E., Salo A.I., Trewartha G., Measurement error in estimates of sprint velocity from a laser displacement measurement device, Int J Sports Med., 33, pp. 439-444, (2012); Field A., Discovering Statistics Using SPSS. 3rd Ed, (2009); Haugen T., Tonnessen E., Hisdal J., Seiler S., The role and development of sprinting speed in soccer, Int J Sports Physiol Perform., 9, pp. 432-441, (2014); Hirvonen J., Rehunen S., Rusko H., Harkonen M., Breakdown of high-energy phosphate compounds and lactate accumulation during short supramaximal exercise, Eur J Appl Physiol Occup Physiol., 56, pp. 253-259, (1987); Gaitanos G.C., Williams C., Boobis L.H., Brooks S., Human muscle metabolism during intermittent maximal exercise, J Appl Physiol., 75, pp. 712-719, (1993); Balsom P.D., Seger J.Y., Sjodin B., Ekblom B., Physiological responses to maximal intensity intermittent exercise, Eur J Appl Physiol Occup Physiol., 65, pp. 144-149, (1992); Haugen T., Tonnessen E., Leirstein S., Hem E., Seiler S., Not quite so fast: Effect of training at 90% sprint speed on maximal and repeated-sprint ability in soccer players, J Sports Sci., 32, pp. 1979-1986, (2014); Tonnessen E., Shalfawi S.A., Haugen T., Enoksen E., The effect of 40-m repeated sprint training on maximum sprinting speed, repeated sprint speed endurance, vertical jump, and aerobic capacity in young elite male soccer players, J Strength Cond Res., 25, pp. 2364-2370, (2011); Rahnama N., Reilly T., Lees A., Injury risk associated with playing actions during competitive soccer, Br J Sports Med., 36, pp. 354-359, (2002); Russell M., West D.J., Harper L.D., Cook C.J., Kilduff L.P., Half-time strategies to enhance second-half performance in team-sports players: A review and recommendations, Sports Med., 45, pp. 353-364, (2015); Paul D.J., Bradley P.S., Nassis G.P., Factors affecting match running performance of elite soccer players: Shedding some light on the complexity, Int J Sports Physiol Perform., 10, pp. 516-519, (2015)","R. Nagahara; Sports Performance Laboratory, National Institute of Fitness and Sports in Kanoya, Kanoya, Japan; email: nagahara@nifs-k.ac.jp","","Human Kinetics Publishers Inc.","15550265","","","26791405","English","Int. J. Sport Physiol. Perform.","Article","Final","","Scopus","2-s2.0-85008425582" "Niinimäki S.; Narra N.; Härkönen L.; Abe S.; Nikander R.; Hyttinen J.; Knüsel C.; Sievänen H.","Niinimäki, Sirpa (37662123400); Narra, Nathaniel (23976753600); Härkönen, Laura (25721995200); Abe, Shinya (56849819400); Nikander, Riku (8299715300); Hyttinen, Jari (35515938800); Knüsel, Christopher (6602347979); Sievänen, Harri (7005525254)","37662123400; 23976753600; 25721995200; 56849819400; 8299715300; 35515938800; 6602347979; 7005525254","The relationship between loading history and proximal femoral diaphysis cross-sectional geometry","2017","American Journal of Human Biology","29","4","e22965","","","","27","10.1002/ajhb.22965","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85012016858&doi=10.1002%2fajhb.22965&partnerID=40&md5=56010bc6a843c328efd537dad06b394d","Archaeology, University of Oulu, P.O. Box 1000, Oulu, 90014, Finland; Department of Electronics and Communications Engineering, BioMediTech, Tampere University of Technology, Tampere, Finland; Department of Ecology, University of Oulu, P.O. Box 3000, Oulu, 90014, Finland; Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. 111, Joensuu, 80101, Finland; Department of Mechanical Engineering and Industrial Systems, Tampere University of Technology, P.O. Box 589, Tampere, 33101, Finland; Unit of Health Sciences, Faculty of Sport and Health Sciences, University of Jyväskylä, P.O. Box 35, (L328), 40014, Finland; GeroCenter Foundation for Aging Research and Development, Rautpohjankatu 8, Jyväskylä, 40700, Finland; Unit of Research & Education, Central Hospital of Central Finland, Keskussairaalantie 19, Jyväskylä, 40620, Finland; UMR5199, De la Prehistoire a l?Actuel: Culture, Environnement, et Anthropologie (PACEA), Bâtiment B8, Allée Géoffroy Saint Hilaire, CS 50023, Pessac Cedex, 33615, France; The UKK Institute for Health Promotion Research, P.O. Box 30, Kaupinpuistonkatu 1, Tampere, 33501, Finland","Niinimäki S., Archaeology, University of Oulu, P.O. Box 1000, Oulu, 90014, Finland; Narra N., Department of Electronics and Communications Engineering, BioMediTech, Tampere University of Technology, Tampere, Finland; Härkönen L., Department of Ecology, University of Oulu, P.O. Box 3000, Oulu, 90014, Finland, Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. 111, Joensuu, 80101, Finland; Abe S., Department of Mechanical Engineering and Industrial Systems, Tampere University of Technology, P.O. Box 589, Tampere, 33101, Finland; Nikander R., Unit of Health Sciences, Faculty of Sport and Health Sciences, University of Jyväskylä, P.O. Box 35, (L328), 40014, Finland, GeroCenter Foundation for Aging Research and Development, Rautpohjankatu 8, Jyväskylä, 40700, Finland, Unit of Research & Education, Central Hospital of Central Finland, Keskussairaalantie 19, Jyväskylä, 40620, Finland; Hyttinen J., Department of Electronics and Communications Engineering, BioMediTech, Tampere University of Technology, Tampere, Finland; Knüsel C., UMR5199, De la Prehistoire a l?Actuel: Culture, Environnement, et Anthropologie (PACEA), Bâtiment B8, Allée Géoffroy Saint Hilaire, CS 50023, Pessac Cedex, 33615, France; Sievänen H., The UKK Institute for Health Promotion Research, P.O. Box 30, Kaupinpuistonkatu 1, Tampere, 33501, Finland","Objectives: We investigated the relationship between loading history and bone biomechanical properties used in physical activity reconstructions. These bone properties included bone bending and torsional strength (J), cortical area (CA), the direction of the major axis (theta angle), and element shape ratios determined from cross sections of standardized bone length. In addition, we explored the applicability of anatomically determined cross sections. Methods: Our material consisted of hip and proximal thigh magnetic resonance images of Finnish female athletes (N = 91) engaged in high-jump, triple-jump, endurance running, swimming, power-lifting, soccer and squash; along with a group of active non-athlete individuals (N = 20). We used regression analysis for size-adjustment, and the extracted residuals were then used to compare differences in the bone properties between groups. Results: We found that triple-jumpers, soccer players, and squash players had the greatest values in CA and J, swimmers and non-athletes had the smallest, whereas high-jumpers, power-lifters, and endurance runners exhibited interim values. No between-the-group differences in element shape ratios or theta angles were found. We found that influences of activity were similar regardless of whether standardized length or anatomically determined cross sections were used. Conclusions: Extreme (triple-jump) and directionally inconsistent loading (soccer and squash) necessitate a more robust skeleton compared to directionally consistent loading (high-jump, power-lifting, and endurance running) or non-impact loading (swimming and non-athletes). However, not all of these relationships were statistically significant. Thus, information gained about physical activity using bone properties is informative but limited. Accounting for the limitations, the method is applicable on fragmented skeletal material as anatomically determined cross sections can be used. © 2017 Wiley Periodicals, Inc.","","Adolescent; Adult; Athletes; Biomechanical Phenomena; Bone Density; Diaphyses; Exercise; Female; Femur; Finland; Hip; Humans; Magnetic Resonance Imaging; Regression Analysis; Thigh; Young Adult; adolescent; adult; athlete; biomechanics; bone density; diagnostic imaging; diaphysis; exercise; female; femur; Finland; hip; human; nuclear magnetic resonance imaging; physiology; regression analysis; thigh; young adult","Brianza S.Z.M., D'amelio P., Pugno N., Delise M., Bignardi C., Isaia G., Allometric scaling and biomechanical behaviour of the bone tissue: An experimental intraspecific investigation, Bone, 40, pp. 1635-1642, (2007); Burr D.B., Piotrowski G., Miller G.J., Structural strength of the macaque femur, American Journal of Physical Anthropology, 54, 3, pp. 305-319, (1981); Ceyhan E., Goad C.L., A comparison of analysis of covariate-adjusted residuals and analysis of covariance, Communications in Statistics Simulation and Computation, 38, pp. 2019-2038, (2009); Corruccini R.S., Shape in morphometrics: Comparative analyses, American Journal of Physical Anthropology, 73, pp. 230-289, (1987); Corruccini R.S., Ciochon R.L., Morphometric affinities of the human shoulder, American Journal of Physical Anthropology, 45, pp. 19-38, (1976); Davies T.G., Stock J.T., The influence of relative body breadth on the diaphyseal morphology of the human lower limb, American Journal of Human Biology, 26, pp. 822-835, (2014); Duncan G.S., Blimke C.R.J., Cowell C.T., Burke S.T., Briody J.N., Howman-Giles R., Bone mineral density in adolescent female athletes: Relationship to exercise type and muscle strength, Medicine and Science in Sports Exercise, 34, 2, pp. 286-294, (2002); Feik S.A., Thomas C.D.L., Clement J.G., Age trends in remodeling of the femoral midshaft differ between the sexes, Journal of Orthopaedic Research, 14, pp. 590-597, (1996); Forwood M.R., Burr D.B., Physical activity and bone mass: Exercises in futility?, Bone and Mineral, 21, 2, pp. 89-112, (1993); Frost H.M., Bone “mass” and the “mechanostat”. 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A comparison of external methods of quantifying the strength of long bone diaphyses to cross-sectional geometric properties, American Journal of Physical Anthropology, 134, pp. 412-423, (2007); Sumner D.R., Mockbee B., Morse K., Cram T., Pitt M., Computed tomography and automated image analysis of prehistoric femora, American Journal of Physical Anthropology, 68, 2, pp. 225-232, (1985); Trinkaus E., Churchill S.E., Ruff C., Postcranial robusticity in Homo. II: Humeral bilateral asymmetry and bone plasticity, American Journal of Physical Anthropology, 93, pp. 1-34, (1994); Turner C.H., Three rules for bone adaptation to mechanical stimuli, Bone, 23, 5, pp. 399-407, (1998); Weaver T.D., The shape of the Neandertal femur is primarily the consequence of a hyperpolar body form, Proceedings of the National Academy of Sciences of the United States of America, 100, 12, pp. 6926-6929, (2003); Weiss E., Effects of rowing on humeral strength, American Journal of Physical Anthropology, 121, pp. 293-302, (2003); Wescott D.J., Population variation in femur subtrochanteric shape, Journal of Forensic Sciences, 50, 2, pp. 1-8, (2005); Wescott D.J., Cunningham D.L., Temporal changes in Arikara humeral and femoral cross-sectional geometry associated with horticultural intensification, Journal of Archaeological Science, 33, 7, pp. 1022-1036, (2006); Yushkevich P.A., Piven J., Hazlett H.C., Smith R.G., Ho S., Gee J.C., Gerig G., User-guided 3D active contour segmentation of anatomical structures: Significantly improved efficiency and reliability, Neuroimage, 131, 3, pp. 1116-1128, (2006)","S. Niinimäki; Archaeology, University of Oulu, Oulu, P.O. Box 1000, 90014, Finland; email: sirpa.niinimaki@oulu.fi","","Wiley-Liss Inc.","10420533","","AJHUE","28161898","English","Am. J. Human Biol.","Article","Final","","Scopus","2-s2.0-85012016858" "Bartsch A.; Benzel E.; Miele V.; Morr D.; Prakash V.","Bartsch, Adam (20033641700); Benzel, Edward (7102963869); Miele, Vincent (57214082955); Morr, Douglas (36720163100); Prakash, Vikas (7103387238)","20033641700; 7102963869; 57214082955; 36720163100; 7103387238","Hybrid III anthropomorphic test device (ATD) response to head impacts and potential implications for athletic headgear testing","2012","Accident Analysis and Prevention","48","","","285","291","6","39","10.1016/j.aap.2012.01.032","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84861869026&doi=10.1016%2fj.aap.2012.01.032&partnerID=40&md5=e7b5c194d3c9a799c781d5a6a1fd513a","Cleveland Clinic, Spine Research Laboratory, Cleveland, OH 44113, 1730 W. 25th Street, United States; Cleveland Traumatic Neuromechanics Consortium, Cleveland, OH, United States; Department of Neurological Surgery, Neurological Institute, Cleveland Clinic, Cleveland, OH, United States; United Hospital Centers, Neurosurgery Spine Center, Clarksburg, WV, United States; Department of Mechanical Engineering, Case Western Reserve University, Cleveland, OH, United States; SEA Limited, Columbus, OH, United States","Bartsch A., Cleveland Clinic, Spine Research Laboratory, Cleveland, OH 44113, 1730 W. 25th Street, United States, Cleveland Traumatic Neuromechanics Consortium, Cleveland, OH, United States; Benzel E., Cleveland Clinic, Spine Research Laboratory, Cleveland, OH 44113, 1730 W. 25th Street, United States, Cleveland Traumatic Neuromechanics Consortium, Cleveland, OH, United States, Department of Neurological Surgery, Neurological Institute, Cleveland Clinic, Cleveland, OH, United States; Miele V., Department of Neurological Surgery, Neurological Institute, Cleveland Clinic, Cleveland, OH, United States, United Hospital Centers, Neurosurgery Spine Center, Clarksburg, WV, United States; Morr D., SEA Limited, Columbus, OH, United States; Prakash V., Cleveland Traumatic Neuromechanics Consortium, Cleveland, OH, United States, Department of Mechanical Engineering, Case Western Reserve University, Cleveland, OH, United States","The Hybrid III 50th percentile male anthropomorphic test device (ATD) is the most widely used human impact testing surrogate and has historically been used in automotive or military testing. More recently, this ATD is finding use in applications evaluating athletic helmet protectivity, quantifying head impact dosage and estimating injury risk. But ATD head-neck response has not been quantified in omnidirectional athletic-type head impacts absent axial preload. It is probable that headgear injury reduction that can be quantified in a laboratory, including in American football, boxing, hockey, lacrosse and soccer, is related to a number of interrelated kinetic and kinematic factors, such as head center of gravity linear acceleration, head angular acceleration, head angular velocity, occipito-cervical mechanics and neck stiffness. Therefore, we characterized ATD head-neck dynamic response to direct head impacts in a series of front, oblique front and lateral head impacts. Key findings were: (1) impacts producing highest ATD resultant center of gravity linear acceleration resulted in the lowest resultant occipito-cervical spine bending moment/force. (2) Resultant ATD head angular velocity and angular acceleration did not appear coupled to impact direction at lower impact energy levels; these parameters were coupled at higher energy levels. (3) The ATD had progressively increasing occipito-cervical stiffness in extension, torsion and lateral bending, respectively. Because the ATD neck influenced head and neck impact dosage parameters, testing agencies, manufacturers and researchers should consider using the Hybrid III head form attached to a neck as a means to quantify head and neck injury risks as opposed to systems that do not utilize a neck. This heightened understanding of Hybrid III ATD head-neck response, and consideration of order of stiffest axes in the lateral, oblique and extension directions, respectively, should aid in the development of head and neck injury impact testing standards. © 2012 Elsevier Ltd. All rights reserved.","Concussion; Head Impact; Helmet; Hybrid III; NOCSAE","Acceleration; Athletic Injuries; Biomechanics; Consumer Product Safety; Craniocerebral Trauma; Head Protective Devices; Humans; Male; Manikins; Neck Injuries; Risk Assessment; Sports Equipment; Angular velocity; Dynamic response; Impact testing; Stiffness; Concussion; Head impact; Helmet; Hybrid III; NOCSAE; acceleration; article; audiovisual equipment; biomechanics; equipment; evaluation; head injury; helmet; human; male; methodology; neck injury; product safety; risk assessment; sport injury; SportS","Agaram V., Kang J., Nusholtz G.S., Kostyniuk G., Hybrid III dummy neck response to airbag loading, Proceedings of the Seventeenth International Technical Conference on Experimental Safety Vehicles, pp. 1-10, (2001); Gennarelli T.A., Wodzin E., Abbreviated Injury Scale, (2005); Bartsch A., Benzel E., Miele V., Prakash V., Impact test comparisons of 20th and 21st century American football helmets, J. 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J. Sports Med., 39, SUPPL. 1, (2005); Yoganandan N., Pintar F.A., Stemper B.D., Schlick M.B., Philippens M., Wismans J., Biomechanics of human occupants in simulated rear crashes: Documentation of neck injuries and comparison of injury criteria, Stapp Car Crash J., 44, pp. 189-204, (2000); Zhang L., Yang K.H., King A.I., A Proposed Injury Threshold for Mild Traumatic Brain Injury, Journal of Biomechanical Engineering, 126, 2, pp. 226-236, (2004)","A. Bartsch; Cleveland Clinic, Spine Research Laboratory, Cleveland, OH 44113, 1730 W. 25th Street, United States; email: bartsca@ccf.org","","","00014575","","AAPVB","22664692","English","Accid. Anal. Prev.","Article","Final","","Scopus","2-s2.0-84861869026" "Meinerz C.M.; Malloy P.; Geiser C.F.; Kipp K.","Meinerz, Carolyn M. (56312219000); Malloy, Philip (55786598500); Geiser, Christopher F. (36876804800); Kipp, Kristof (36835336600)","56312219000; 55786598500; 36876804800; 36835336600","Anticipatory effects on lower extremity neuromechanics during a cutting task","2015","Journal of Athletic Training","50","9","","905","913","8","36","10.4085/1062-6050-50.8.02","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942605415&doi=10.4085%2f1062-6050-50.8.02&partnerID=40&md5=25dd8f904c5d7f10dc47052037f96c8f","Department of Exercise Physiology, Marquette University, Cramer Hall 215, Milwaukee, 53201, WI, United States","Meinerz C.M., Department of Exercise Physiology, Marquette University, Cramer Hall 215, Milwaukee, 53201, WI, United States; Malloy P., Department of Exercise Physiology, Marquette University, Cramer Hall 215, Milwaukee, 53201, WI, United States; Geiser C.F., Department of Exercise Physiology, Marquette University, Cramer Hall 215, Milwaukee, 53201, WI, United States; Kipp K., Department of Exercise Physiology, Marquette University, Cramer Hall 215, Milwaukee, 53201, WI, United States","Context: Continued research into the mechanism of noncontact anterior cruciate ligament injury helps to improve clinical interventions and injury-prevention strategies. A better understanding of the effects of anticipation on landing neuromechanics may benefit training interventions. Objective: To determine the effects of anticipation on lower extremity neuromechanics during a single-legged land-and-cut task. Design: Controlled laboratory study. Setting: University biomechanics laboratory. Participants: Eighteen female National Collegiate Athletic Association Division I collegiate soccer players (age = 19.7 ± 0.8 years, height = 167.3 ± 6.0 cm, mass = 66.1 ± 2.1 kg). Intervention(s): Participants performed a single-legged land-and-cut task under anticipated and unanticipated conditions. Main Outcome Measure(s): Three-dimensional initial contact angles, peak joint angles, and peak internal joint moments and peak vertical ground reaction forces and sagittal-plane energy absorption of the 3 lower extremity joints; muscle activation of selected hip- And knee-joint muscles. Results: Unanticipated cuts resulted in less knee flexion at initial contact and greater ankle toe-in displacement. Unanticipated cuts were also characterized by greater internal hipabductor and external-rotator moments and smaller internal knee-extensor and external-rotator moments. Muscle-activation profiles during unanticipated cuts were associated with greater activation of the gluteus maximus during the precontact and landing phases. Conclusions: Performing a cutting task under unanticipated conditions changed lower extremity neuromechanics compared with anticipated conditions. Most of the observed changes in lower extremity neuromechanics indicated the adoption of a hipfocused strategy during the unanticipated condition.","Anterior cruciate ligament; Anticipation; Biomechanics","Adolescent; Anterior Cruciate Ligament; Anterior Cruciate Ligament Injuries; Anticipation, Psychological; Biomechanical Phenomena; Female; Hip; Humans; Isometric Contraction; Knee Injuries; Knee Joint; Lower Extremity; Movement; Muscle, Skeletal; Musculoskeletal Physiological Phenomena; Psychomotor Performance; Rotation; Soccer; Thigh; Young Adult; adolescent; anterior cruciate ligament; anterior cruciate ligament injury; anticipation; biomechanics; female; hip; human; injuries; knee; knee injury; lower limb; movement (physiology); muscle isometric contraction; musculoskeletal function; pathophysiology; physiology; psychomotor performance; rotation; skeletal muscle; soccer; thigh; young adult","Shultz S.J., Schmitz R.J., Benjaminse A., Chaudhari A.M., Collins M., Padua D.A., Acl research retreat VI: An update on acl injury risk and prevention, J Athl Train, 47, 5, pp. 591-603, (2012); Voskanian N., Acl injury prevention in female athletes: Review of the literature and practical considerations in implementing an acl prevention program, Curr Rev Musculoskelet Med, 6, 2, pp. 158-163, (2013); Arendt E.A., Agel J., Dick R., Anterior cruciate ligament injury patterns among collegiate men and women, J Athl Train, 34, 2, pp. 86-92, (1999); Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. 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Blackburn J.T., Padua D.A., Influence of trunk flexion on hip and knee joint kinematics during a controlled drop landing, Clin Biomech, 23, 3, pp. 313-319, (2008); Chappell J.D., Creighton R.A., Giuliani C., Yu B., Garrett W.E., Kinematics and electromyography of landing preparation in vertical stop-jump: Risks for noncontact anterior cruciate ligament injury, Am J Sports Med, 35, 2, pp. 235-241, (2007); Kim J.H., Lee K., Kong S.J., An K.O., Jeong J.H., Lee Y.S., Effect of anticipation on lower extremity biomechanics during side and crosscutting maneuvers in young soccer players, Am J Sports Med, 42, 8, pp. 1985-1992, (2014); McLean S.G., Huang X., Van Den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for acl injury, Clin Biomech, 20, 8, pp. 863-870, (2005); Sell T.C., Ferris C.M., Abt J.P., Et al., The effect of direction and reaction on the neuromuscular and biomechanical characteristics of the knee during tasks that simulate the noncontact anterior cruciate ligament injury mechanism, Am J Sports Med, 34, 1, pp. 43-54, (2006); Weinhandl J.T., Earl-Boehm J.E., Ebersole K.T., Huddleston W.E., Armstrong B.S., O'Connor K.M., Anticipatory effects on anterior cruciate ligament loading during sidestep cutting, Clin Biomech, 28, 6, pp. 655-663, (2013); Withrow T.J., Huston L.J., Wojtys E.M., Ashton-Miller J.A., The relationship between quadriceps muscle force, knee flexion, and anterior cruciate ligament strain in an in vitro simulated jump landing, Am J Sports Med, 34, 2, pp. 269-274, (2006); Brown T.N., Palmieri-Smith R.M., McLean S.G., Sex and limb differences in hip and knee kinematics and kinetics during anticipated and unanticipated jump landings: Implications for anterior cruciate ligament injury, Br J Sports Med, 43, 13, pp. 1049-1056, (2009); Borotikar B.S., Newcomer R., Koppes R., McLean S.G., Combined effects of fatigue and decision making on female lower limb landing postures: Central and peripheral contributions to acl injury risk, Clin Biomech, 23, 1, pp. 81-92, (2008); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med, 32, 4, pp. 1002-1012, (2004); 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Cappello A., Cappozzo A., La P.P.F., Lucchetti L., Leardini A., Multiple anatomical landmark calibration for optimal bone pose estimation, Hum Mov Sci, 16, 2-3, pp. 259-274, (1997); Kadaba M.P., Ramakrishnan H.K., Wootten M.E., Measurement of lower extremity kinematics during level walking, J Orthop Res, 8, 3, pp. 383-392, (1990); Schache A.G., Baker R., On the expression of joint moments during gait, Gait Posture, 25, 3, pp. 440-452, (2007); Landry S.C., McKean K.A., Hubley-Kozey C.L., Stanish W.D., Deluzio K.J., Gender differences exist in neuromuscular control patterns during the pre-contact and early stance phase of an unanticipated side-cut and cross-cut maneuver in 15-18 years old adolescent soccer players, J Electromyogr Kinesiol, 19, 5, pp. E370-E379, (2009); Bencke J., Naesborg H., Simonsen E.B., Klausen K., Motor pattern of the knee joint muscles during side-step cutting in European team handball. Influence on muscular coordination after an intervention study, Scand J Med Sci Sports, 10, 2, pp. 68-77, (2000); Demont R.G., Lephart S.M., Giraldo J.L., Swanik C.B., Fu F.H., Muscle preactivity of anterior cruciate ligament-deficient and -reconstructed females during functional activities, J Athl Train, 34, 2, pp. 115-120, (1999); Ireland M.L., The female ACL: Why is it more prone to injury?, Orthop Clin North Am, 33, 4, pp. 637-651, (2002); Jacobs C.A., Uhl T.L., Mattacola C.G., Shapiro R.S., Rayens W.S., Hip abductor function and lower extremity landing kinematics: Sex differences, J Athl Train, 42, 1, pp. 76-83, (2007); Palmieri-Smith R.M., Wojtys E.M., Ashton-Miller J.A., Association between preparatory muscle activation and peak valgus knee angle, J Electromyogr Kinesiol, 18, 6, pp. 973-979, (2008); Burke D., Dickson H.G., Skuse N.F., Task-dependent changes in the responses to low-threshold cutaneous afferent volleys in the human lower limb, J Physiol, 432, pp. 445-458, (1991); Marklof K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, 6, pp. 930-935, (1995); Oh Y.K., Lipps D.B., Ashton-Miller J.A., Wojtys E.M., What strains the anterior cruciate ligament during a pivot landing?, Am J Sports Med, 40, 3, pp. 574-583, (2012); Kipp K., Brown T.N., McLean S.G., Palmieri-smith rm. Decisionmaking and experience level influence frontal plane knee joint biomechanics during a cutting maneuver, J Appl Biomech, 29, 6, pp. 756-762, (2013); Duncan A., McDonagh M.J., Stretch reflex distinguished from preprogrammed muscle activations following landing impacts in man, J Physiol, 526, pp. 457-468, (2000); Yom J.P., Simpson K.J., Arnett S.W., Brown C.N., The effects of a lateral in-flight perturbation on lower extremity biomechanics during drop landings, J Appl Biomech, 30, 5, pp. 655-662, (2014); Stearns K.M., Powers C.M., Improvements in hip muscle performance result in increased use of the hip extensors and abductors during a landing task, Am J Sports Med, 42, 3, pp. 602-609, (2014)","C.M. Meinerz; Department of Exercise Physiology, Marquette University, Milwaukee, Cramer Hall 215, 53201, United States; email: carrie.meinerz@gmail.com","","National Athletic Trainers' Association Inc.","10626050","","JATTE","26285089","English","J. Athl. Train.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-84942605415" "Kipp K.; McLean S.G.; Palmieri-Smith R.M.","Kipp, Kristof (36835336600); McLean, Scott G. (7102155685); Palmieri-Smith, Riann M. (15846505300)","36835336600; 7102155685; 15846505300","Patterns of hip flexion motion predict frontal and transverse plane knee torques during a single-leg land-and-cut maneuver","2011","Clinical Biomechanics","26","5","","504","508","4","26","10.1016/j.clinbiomech.2011.01.004","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955675616&doi=10.1016%2fj.clinbiomech.2011.01.004&partnerID=40&md5=b0592b1face9519697537e9464ae4333","Department of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor, MI 48109, United States; School of Kinesiology, University of Michigan, Ann Arbor, MI 48109, United States; Bone and Joint Injury Prevention and Rehabilitation Center, University of Michigan, Ann Arbor, MI 48109, United States","Kipp K., Department of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor, MI 48109, United States, School of Kinesiology, University of Michigan, Ann Arbor, MI 48109, United States; McLean S.G., School of Kinesiology, University of Michigan, Ann Arbor, MI 48109, United States, Bone and Joint Injury Prevention and Rehabilitation Center, University of Michigan, Ann Arbor, MI 48109, United States; Palmieri-Smith R.M., School of Kinesiology, University of Michigan, Ann Arbor, MI 48109, United States, Bone and Joint Injury Prevention and Rehabilitation Center, University of Michigan, Ann Arbor, MI 48109, United States","Background: Impulsive frontal plane knee joint torques directly strain the anterior cruciate ligament and therefore may contribute to injury risk. Because deleterious torques may in part be related to aberrant kinematic movement patterns the primary purpose of this study was to establish a prediction model for frontal plane knee joint torques based on motion characteristics derived from Principal Component Analysis. Methods: Eighteen healthy NCAA Division I female athletes performed a single-leg land-and-cut maneuver (n = 5 trials) with their dominant limb. Ensemble average lower extremity joint angles for the hip, knee, and ankle along with normalized external knee abduction torques were calculated for the entire stance phase. The ensemble kinematic data were individually submitted to a Principal Component Analysis. Principal component scores were used in a forward step-wise regression model to establish a prediction equation for peak ensemble-averaged knee abduction torque. Findings: Approximately 31% of the variance in knee abduction torque was explained by a principal component that captured relative magnitudes of hip flexion motion during early stance. Likewise, approximately 32% of the variance in knee internal rotation torque was explained by a principal component that captured overall hip flexion during stance. Interpretation: Rapid hip flexion motion during the first half of the stance phase of a single-leg land-and-cut maneuver is associated with greater knee abduction joint torques, whereas greater overall flexion during the entire stance phase is associated with smaller internal rotation torques. © 2011 Elsevier Ltd.","Landing biomechanics; Principal components analysis; Regression analysis","Female; Hip Joint; Humans; Knee Joint; Muscle Contraction; Muscle, Skeletal; Running; Soccer; Torque; Young Adult; Biomechanics; Forecasting; Joints (anatomy); Kinematics; Landing; Ligaments; Mathematical models; Physiological models; Regression analysis; Rotation; Torque; Anterior cruciate ligament; Ensemble averages; Ensemble-averaged; Frontal planes; Hip flexion; Injury risk; Internal rotations; Joint angle; Joint torques; Kinematic data; Knee joint; Lower extremity; Motion characteristics; Movement pattern; Prediction equations; Prediction model; Principal Components; Principal components analysis; Stance phase; Stepwise regression; Transverse planes; abduction; adult; ankle; article; athlete; female; hip; human; human experiment; joint function; joint mobility; knee; normal human; principal component analysis; priority journal; range of motion; torque; Principal component analysis","Boden B.P., Torg J.S., Knowles S.B., Hewett T.E., Video analysis of anterior cruciate ligament injury: Abnormalities in hip and ankle kinematics, Am. 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Biomech., 20, pp. 863-870, (2005); McLean S.G., Huang X., Van Den Bogert A.J., Investigating isolated neuromuscular control contributions to non-contact anterior cruciate ligament injury risk via computer simulation methods, Clin. Biomech., 23, pp. 926-936, (2008); Myklebust G., Engebretsen L., Braekken I.H., Skjolberg A., Olsen O.E., Bahr R., Prevention of anterior cruciate ligament injuries in female team handball players: A prospective intervention study over three seasons, Clin. J. Sports Med., 13, pp. 71-78, (2003); O'Connor K.M., Bottum M.C., Differences in cutting knee mechanics based on principal components analysis, Med. Sci. Sports Exerc., 41, pp. 867-878, (2009); Olsen O.E., Myklebust G., Engebretsen L., Holme I., Bahr R., Exercises to prevent lower limb injuries in youth sports: Cluster randomised controlled trial, BMJ, 330, (2005); Shultz S.J., Schmitz R.J., Effects of transverse and frontal plane knee laxity on hip and knee neuromechanics during drop landings, Am. J. 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Am., 90, pp. 815-823, (2008); Woltring H.J., Huiskes R., De Lange A., Finite centroid and helical axis estimation from noisy landmark measurements in the study of human joint kinematics, Journal of Biomechanics, 18, 5, pp. 379-389, (1985); Wrigley A.T., Albert W.J., Deluzio K.J., Stevenson J.M., Differentiating lifting technique between those who develop low back pain and those who do not, Clin. Biomech., 20, pp. 254-263, (2005); Yu B., Lin C.F., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clin. Biomech., 21, pp. 297-305, (2006)","K. Kipp; Department of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor, MI 48109, United States; email: kristof@med.umich.edu","","","02680033","","CLBIE","21306805","English","Clin. Biomech.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-79955675616" "Salzmann G.M.; Preiss S.; Zenobi-Wong M.; Harder L.P.; Maier D.; Dvorák J.","Salzmann, Gian M. (23390663100); Preiss, Stefan (36879858500); Zenobi-Wong, Marcy (36609635600); Harder, Laurent P. (56702298400); Maier, Dirk (22994029700); Dvorák, Jirí (7202106693)","23390663100; 36879858500; 36609635600; 56702298400; 22994029700; 7202106693","Osteoarthritis in Football: With a Special Focus on Knee Joint Degeneration","2017","Cartilage","8","2","","162","172","10","27","10.1177/1947603516648186","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85015764698&doi=10.1177%2f1947603516648186&partnerID=40&md5=74d06cf3030ed6f0893aeea6438cb447","Musculoskeletal Centre, Orthopaedics Lower Extremities, Schulthess Clinic, Zurich, Switzerland; Department of Health Sciences and Technology, Cartilage Engineering and Regeneration Laboratory, ETH Zurich, Switzerland; Department for Orthopedic Surgery and Traumatology, Freiburg University Hospital, Freiburg, Germany; FIFA Medical Assessment and Research Centre (F-MARC), FIFA, Zurich, Switzerland","Salzmann G.M., Musculoskeletal Centre, Orthopaedics Lower Extremities, Schulthess Clinic, Zurich, Switzerland; Preiss S., Musculoskeletal Centre, Orthopaedics Lower Extremities, Schulthess Clinic, Zurich, Switzerland; Zenobi-Wong M., Department of Health Sciences and Technology, Cartilage Engineering and Regeneration Laboratory, ETH Zurich, Switzerland; Harder L.P., Musculoskeletal Centre, Orthopaedics Lower Extremities, Schulthess Clinic, Zurich, Switzerland; Maier D., Department for Orthopedic Surgery and Traumatology, Freiburg University Hospital, Freiburg, Germany; Dvorák J., Musculoskeletal Centre, Orthopaedics Lower Extremities, Schulthess Clinic, Zurich, Switzerland, FIFA Medical Assessment and Research Centre (F-MARC), FIFA, Zurich, Switzerland","Football is currently the most popular sporting activity in the world. Multiple reports have shown that a high incidence of osteoarthritis is found in football players. Evidence clearly shows that traumatic injury significantly predisposes players for such pathophysiology. Injuries are frequent in amateur as well as professional football players, with knee and ankle accounting for the most severe injuries. Many professional athletes lose playing time due to injuries and many are forced into early retirement. Posttraumatic osteoarthritis is a common finding among ex-football players with numbers well above the normal population. Today’s surgical techniques are advanced and capable of restoring the joint to a certain extent. However, a restitution ad integrum is reached only in very rare cases. Professional football players that return to play after serious injuries perform their extremely strenuous activity on morphologically compromised joints. Incomplete rehabilitation and pressure to return to play after an injurious event clearly put the athlete at an even higher risk for joint degeneration. Prevention strategies, improved surgical management, strict rehabilitation, as well as future aspects such as early suppression of inflammation, personalized medicine, and predictive genomics DNA profiling are needed to reduce incidence and improve the health perspectives of football players. © 2016, © The Author(s) 2016.","cartilage; diagnosis; football; joint involved; knee; osteoarthritis; soccer","25 hydroxyvitamin D; bone morphogenetic protein; nonsteroid antiinflammatory agent; anterior cruciate ligament injury; anterior cruciate ligament reconstruction; Article; biomechanics; cartilage injury; chondrocyte implantation; chondrodysplasia; football; hemarthrosis; hip osteoarthritis; human; knee arthroscopy; knee disease; Knee Injury and Osteoarthritis Outcome Score; knee meniscus rupture; knee radiography; meniscectomy; meta analysis (topic); nuclear magnetic resonance imaging; osteoarthritis; posttraumatic arthropathy; return to sport; risk factor; sport injury; surgical technique; synovitis; systematic review (topic); tendon graft; vitamin supplementation; Western Ontario and McMaster Universities Osteoarthritis Index","Dvorak J., Graf-Baumann T., Peterson L., Junge A., Football, or soccer, as it is called in North America, is the most popular sport worldwide, Am J Sports Med, 28, pp. S1-S2, (2000); Gantz S., Schindel R., Schneider S., Schiltenwolf M., Bolm-Audorff U., Eberth F., Et al., Laufsport-Führt Laufsport zu vorzeitigen degenerativen Veränderungen am Kniegelenk? 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Salzmann; Schulthess Klinik, Zurich, Lengghalde 2, 8008, Switzerland; email: gian.salzmann@kws.ch","","SAGE Publications Inc.","19476035","","","28345409","English","Cartilage","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-85015764698" "DiCesare C.A.; Montalvo A.; Barber Foss K.D.; Thomas S.M.; Ford K.R.; Hewett T.E.; Jayanthi N.A.; Stracciolini A.; Bell D.R.; Myer G.D.","DiCesare, Christopher A. (55620685100); Montalvo, Alicia (56397894400); Barber Foss, Kim D. (6507308390); Thomas, Staci M. (55772425700); Ford, Kevin R. (7102539333); Hewett, Timothy E. (7005201943); Jayanthi, Neeru A. (13405041000); Stracciolini, Andrea (6507819435); Bell, David R. (55737071800); Myer, Gregory D. (6701852696)","55620685100; 56397894400; 6507308390; 55772425700; 7102539333; 7005201943; 13405041000; 6507819435; 55737071800; 6701852696","Lower extremity biomechanics are altered across maturation in sport-specialized female adolescent athletes","2019","Frontiers in Pediatrics","7","JUN","268","","","","26","10.3389/fped.2019.00268","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85068869079&doi=10.3389%2ffped.2019.00268&partnerID=40&md5=d438962aaf4e8756cc5ca408d7aa8d78","Division of Sports Medicine, SPORT Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Department of Athletic Training, Nicole Wertheim College of Nursing and Health Sciences, Florida International University, Miami, FL, United States; Department of Physical Therapy, High Point University, High Point, NC, United States; Biomechanics Laboratories and Sports Medicine Research Center, Mayo Clinic, Rochester, MN, United States; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, United States; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, United States; Emory Sports Medicine Center, Johns Creek, GA, United States; Emory University School of Medicine, Atlanta, GA, United States; Micheli Center for Sports Injury Prevention, Waltham, MA, United States; Division of Sports Medicine, Department of Orthopaedics, Boston Children's Hospital, Boston, MA, United States; Department of Orthopaedic Surgery, Harvard Medical School, Boston, MA, United States; Division of Emergency Medicine, Department of Medicine, Boston Children's Hospital, Boston, MA, United States; Wisconsin Injury in Sport Laboratory, Department of Kinesiology, University of Wisconsin-Madison, Madison, WI, United States; Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, United States; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States; Department of Orthopaedic Surgery, University of Cincinnati College of Medicine, Cincinnati, OH, United States","DiCesare C.A., Division of Sports Medicine, SPORT Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Montalvo A., Department of Athletic Training, Nicole Wertheim College of Nursing and Health Sciences, Florida International University, Miami, FL, United States; Barber Foss K.D., Division of Sports Medicine, SPORT Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Thomas S.M., Division of Sports Medicine, SPORT Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Ford K.R., Department of Physical Therapy, High Point University, High Point, NC, United States; Hewett T.E., Biomechanics Laboratories and Sports Medicine Research Center, Mayo Clinic, Rochester, MN, United States, Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, United States, Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, United States; Jayanthi N.A., Emory Sports Medicine Center, Johns Creek, GA, United States, Emory University School of Medicine, Atlanta, GA, United States; Stracciolini A., Micheli Center for Sports Injury Prevention, Waltham, MA, United States, Division of Sports Medicine, Department of Orthopaedics, Boston Children's Hospital, Boston, MA, United States, Department of Orthopaedic Surgery, Harvard Medical School, Boston, MA, United States, Division of Emergency Medicine, Department of Medicine, Boston Children's Hospital, Boston, MA, United States; Bell D.R., Wisconsin Injury in Sport Laboratory, Department of Kinesiology, University of Wisconsin-Madison, Madison, WI, United States, Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, United States; Myer G.D., Division of Sports Medicine, SPORT Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Micheli Center for Sports Injury Prevention, Waltham, MA, United States, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States, Department of Orthopaedic Surgery, University of Cincinnati College of Medicine, Cincinnati, OH, United States","Sport specialization is a growing trend in youth athletes and may contribute to increased injury risk. The neuromuscular deficits that often manifest during maturation in young, female athletes may be exacerbated in athletes who specialize in a single sport. The purpose of this study was to investigate if sport specialization is associated with increased lower extremity biomechanical deficits pre-to post-puberty in adolescent female athletes. Seventy-nine sport-specialized female adolescent (Mean ± SD age = 13.4 ± 1.8 years) basketball, soccer, and volleyball athletes were identified and matched with seventy-nine multi-sport (soccer, basketball, and volleyball) female athletes from a database of 1,116 female adolescent basketball, soccer, and volleyball athletes who were enrolled in one of two large prospective, longitudinal studies. The athletes were assessed over two visits (Mean ± SD time = 724.5 ± 388.7 days) in which they were classified as pre-pubertal and post-pubertal, respectively. Separate 2 × 2 analyses of covariance were used to compare sport-specialized and multi-sport groups and dominant/non-dominant limbs with respect to pubertal changes in peak knee sagittal, frontal, and transverse plane joint angular measures and moments of force recorded while performing a drop vertical jump task. The sport-specialized group were found to exhibit significantly larger post-pubertal increases in peak knee abduction angle (p = 0.005) and knee abduction moment (p = 0.006), as well as a smaller increase in peak knee extensor moment (p = 0.032) during landing when compared to the multi-sport group. These biomechanical changes are indicative of potentially compromised neuromuscular control that may increase injury risk pre-to post-puberty in sport-specialized female athletes. Consideration of maturation status may be an important factor in assessing the injury risk profiles of adolescent athletes who specialize in sport. Copyright © 2019 DiCesare, Montalvo, Barber Foss, Thomas, Ford, Hewett, Jayanthi, Stracciolini, Bell and Myer.","Biomechanics; Female; Injury risk; Maturation; Sport specialization","adolescent; Article; athlete; basketball; biomechanics; cohort analysis; female; human; human experiment; jumping; knee; longitudinal study; lower limb; neuromuscular function; puberty; risk assessment; soccer; sport; sport injury; task performance; volleyball","Jayanthi N., Pinkham C., Dugas L., Patrick B., Labella C., Sports specialization in young athletes: Evidence-based recommendations, Sports Health, 5, pp. 251-257, (2013); Bell D.R., Post E.G., Trigsted S.M., Hetzel S., McGuine T.A., Brooks M.A., Prevalence of sport specialization in high school athletics: A 1-year observational study, Am J Sports Med., 44, pp. 1469-1474, (2016); Strum R., Childhood obesity-what we can learn from existing data on societal trends, part 1, Prevent Chron Dis., 2, (2005); Gould D., The professionalization of youth sports: It's time to act!, Clin J Sport Med., 19, pp. 81-82, (2009); 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Lopiano D.A., Modern history of women in sports. twenty-five years of title IX, Clin Sports Med., 19, pp. 163-173, (2000); Post E.G., Trigsted S.M., Riekena J.W., Hetzel S., McGuine T.A., Brooks M.A., Et al., The association of sport specialization and training volume with injury history in youth athletes, Am J Sports Med., 45, pp. 1405-1412, (2017); McGuine T.A., Post E.G., Hetzel S.J., Brooks M.A., Trigsted S., Bell D.R., A prospective study on the effect of sport specialization on lower extremity injury rates in high school athletes, Am J Sports Med., 45, pp. 2706-2712, (2017); Myer G.D., Jayanthi N., Difiori J.P., Faigenbaum A.D., Kiefer A.W., Logerstedt D., Et al., Sport specialization, Part I: Does early sports specialization increase negative outcomes and reduce the opportunity for success in young athletes?, Sports Health, 7, pp. 437-442, (2015); Feeley B.T., Agel J., LaPrade R.F., When is it too early for single sport specialization?, Am J Sports Med., 44, pp. 234-241, (2016); Jayanthi N.A., LaBella C.R., Fischer D., Pasulka J., Dugas L.R., Sports-specialized intensive training and the risk of injury in young athletes a clinical case-control study, Am J Sports Med., 43, pp. 794-801, (2015); Hall R., Barber Foss K., Hewett T.E., Myer G.D., Sport specialization's association with an increased risk of developing anterior knee pain in adolescent female athletes, J Sport Rehabil., 24, pp. 31-35, (2015); Hamill J., Palmer C., Van Emmerik R.E., Coordinative variability and overuse injury, Sports Med Arthrosc Rehabil Ther Technol., 4, (2012); Olsen S.J., Fleisig G.S., Dun S., Loftice J., Andrews J.R., Risk factors for shoulder and elbow injuries in adolescent baseball pitchers, Am J Sports Med., 34, pp. 905-912, (2006); Abrams G.D., Renstrom P.A., Safran M.R., Epidemiology of musculoskeletal injury in the tennis player, Br J Sports Med., 46, pp. 492-498, (2012); Fransen J., Pion J., Vandendriessche J., Vandorpe B., Vaeyens R., Lenoir M., Et al., Differences in physical fitness and gross motor coordination in boys aged 6-12 years specializing in one versus sampling more than one sport, J Sports Sci., 30, pp. 379-386, (2012); Myer G.D., Jayanthi N., DiFiori J.P., Faigenbaum A.D., Kiefer A.W., Logerstedt D., Et al., Sports specialization, part II: Alternative solutions to early sport specialization in youth athletes, Sports Health, 8, pp. 65-73, (2016); Myer G.D., Ford K.R., Palumbo J.P., Hewett T.E., Neuromuscular training improves performance and lower-extremity biomechanics in female athletes, J Strength Condition Res., 19, pp. 51-60, (2005); Myer G.D., Ford K.R., McLean S.G., Hewett T.E., The effects of plyometric versus dynamic stabilization and balance training on lower extremity biomechanics, Am J Sports Med., 34, pp. 445-455, (2006); Csintalan R.P., Inacio M.C., Funahashi T.T., Incidence rate of anterior cruciate ligament reconstructions, Perm J., 12, pp. 17-21, (2008); Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A 13-year review, Am J Sports Med., 33, pp. 524-530, (2005); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J Bone Joint Surg Am Vol., 86 A, pp. 1601-1608, (2004); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med., 33, pp. 492-501, (2005); Ford K.R., Myer G.D., Schmitt L.C., Uhl T.L., Hewett T.E., Preferential quadriceps activation in female athletes with incremental increases in landing intensity, J Appl Biomech., 27, pp. 215-222, (2011); Quatman C.E., Ford K.R., Myer G.D., Hewett T.E., Maturation leads to gender differences in landing force and vertical jump performance - A longitudinal study, Am J Sports Med., 34, pp. 806-813, (2006); Pappas E., Shiyko M.P., Ford K.R., Myer G.D., Hewett T.E., Biomechanical deficit profiles associated with ACL injury risk in female athletes, Med Sci Sports Exerc., 48, pp. 107-113, (2016); Myer G.D., Ford K.R., Divine J.G., Wall E.J., Kahanov L., Hewett T.E., Longitudinal assessment of noncontact anterior cruciate ligament injury risk factors during maturation in a female athlete: A case report, J Athletic Train., 44, pp. 101-109, (2009); Ford K.R., Myer G.D., Hewett T.E., Longitudinal effects of maturation on lower extremity joint stiffness in adolescent athletes, Am J Sports Med., 38, pp. 1829-1837, (2010); Ford K.R., Shapiro R., Myer G.D., Van Den Bogert A.J., Hewett T.E., Longitudinal sex differences during landing in knee abduction in young athletes, Med Sci Sports Exerc., 42, pp. 1923-1931, (2010); Myer G.D., Ford K.R., Barber Foss K.D., Goodman A., Ceasar A., Rauh M.J., Et al., The incidence and potential pathomechanics of patellofemoral pain in female athletes, Clin Biomech. (Bristol, Avon), 25, pp. 700-707, (2010); Hewett T.E., Ford K.R., Xu Y.Y.Y., Khoury J., Myer G.D., Utilization of ACL injury biomechanical and neuromuscular risk profile analysis to determine the effectiveness of neuromuscular training, Am J Sport Med., 44, pp. 3146-3151, (2016); Davies P.L., Rose J.D., Motor skills of typically developing adolescents: Awkwardness or improvement?, Phys Occup Ther Pediatr., 20, pp. 19-42, (2000); Davies P.L., Rose J.D., Assessment of cognitive development in adolescents by means of neuropsychological tasks, Dev Neuropsychol., 15, pp. 227-248, (1999); Galloway R.T., Xu Y., Hewett T.E., Barber Foss K., Kiefer A.W., DiCesare C.A., Et al., Age-dependent patellofemoral pain: Hip and knee risk landing profiles in prepubescent and postpubescent female athletes, Am J Sports Med., 46, pp. 2761-2771, (2018); Ford K.R., Myer G.D., Hewett T.E., Reliability of landing 3D motion analysis: Implications for longitudinal analyses, Med Sci Sports Exerc., 39, pp. 2021-2028, (2007); Paterno M.V., Schmitt L.C., Ford K.R., Rauh M.J., Myer G.D., Huang B., Et al., Biomechanical measures during landing and postural stability predict second anterior cruciate ligament injury after anterior cruciate ligament reconstruction and return to sport, Am J Sports Med., 38, pp. 1968-1978, (2010); Sigward S.M., Pollard C.D., Powers C.M., The influence of sex and maturation on landing biomechanics: Implications for anterior cruciate ligament injury, Scand J Med Sci Sports., 22, pp. 502-509, (2012); Ford K.R., Myer G.D., Brent J.L., Hewett T.E., Hip and knee extensor moments predict vertical jump height in adolescent girls, J Strength Condition Res Nat Strength Condition Assoc., 23, pp. 1327-1331, (2009); Cote J., The influence of the family in the development of talent in sport, Sport Psychol., 13, pp. 395-417, (1999); Wiersma L.D., Risks and benefits of youth sport specialization: Perspectives and recommendations, Pediatr Exerc Sci., 12, pp. 13-22, (2000); Baker J., Cobley S., Fraser-Thomas J., What do we know about early sport specialization?, Not Much! High Abil Stud., 20, pp. 77-89, (2009); Cote J., Lidor R., Hackfort D., To sample or to specialize? Seven postulates about youth sport activities that lead to continued participation and elite performance, Int J Sport Exerc Psychol., 9, pp. 7-17, (2009)","G.D. Myer; Division of Sports Medicine, SPORT Center, Cincinnati Children's Hospital Medical Center, Cincinnati, United States; email: greg.myer@cchmc.org","","Frontiers Media S.A.","22962360","","","","English","Front. Pediatr.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85068869079" "Allen L.R.; Flemming D.; Sanders T.G.","Allen, Lee R. (8431861500); Flemming, Donald (7003800804); Sanders, Timothy G. (7202485073)","8431861500; 7003800804; 7202485073","Turf toe: Ligamentous injury of the first metatarsophalangeal joint","2004","Military Medicine","169","11","","xix","xxiv","","28","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-16644401567&partnerID=40&md5=0bd9cb36b4af5dc768ed7e5186bafc73","Department of Radiology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814-4799, United States","Allen L.R., Department of Radiology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814-4799, United States; Flemming D., Department of Radiology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814-4799, United States; Sanders T.G., Department of Radiology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814-4799, United States","Injuries to the metatarsophalangeal (MTP) joint of the great toe have increased in incidence over the past thirty years following the introduction of artificial playing surfaces and the accompanying use of lighter footwear. Although most common in American football players, similar injuries can also occur in other sporting activities including soccer and dance, or following trauma to the great toe. The mechanism of injury is typically hyperextension of the MTP joint, but injuries have also been reported secondary to valgus or varus stress, or rarely as a result of hyperflexion injury (1,2). The abnormal forces applied to the first MTP joint at the time of injury, result in varying degrees of sprain or disruption of the supporting soft tissue structures, leading to the injury commonly referred to as turf toe. The extent of soft tissue disruption is influential in treatment planning and can be used to determine the prognosis for recovery. This report will review the anatomy of the first MTP join, followed by a discussion of the mechanism of injury and the typical clinical presentation of an individual with turf toe. Finally, the role of imaging including radiography and magnetic resonance imaging, and standard treatment options for turf toe will be discussed.","","Adult; Foot Injuries; Football; Hallux Valgus; Humans; Ligaments, Articular; Male; Metatarsophalangeal Joint; Sprains and Strains; Toe Joint; adult; article; biomechanics; case report; convalescence; edema; foot injury; foot radiography; football; hallux; human; incidence; joint function; joint injury; ligament injury; metatarsophalangeal joint; nuclear magnetic resonance imaging; prognosis; soft tissue injury; sport injury; sprain; turf toe; football; hallux valgus; injury; ligament; male; metatarsophalangeal joint; radiography; toe joint","Coker T.P., Arnold J.A., Weber D.L., Traumatic lesions of the metatarsophalangeal joint-of the great toe in athletes, The American Journal of Sports Medicine, 6, pp. 326-334, (1978); Massari L., Ventre T., Iirillo A., Atypical medial dislocation of the first metatarsophalangeal joint, Foot and Ankle International, 19, pp. 624-626, (1998); Clanton T.O., Ford J.J., Turf toe injury, Clinics in Sports Medicine, 13, pp. 731-741, (1994); Bowers K.D., Martin R.B., Turf-toe: A shoe-surface related football injury, Medicine and Science in Sports, 8, pp. 81-83, (1976); Fabeck L.G., Zekhini C., Farokh D., Descamps P.Y., Delince P.E., Traumatic hallux valgus following rupture of the medial collateral ligament of the first metatarsophalangeal joint: A case report, The Journal of Foot and Ankle Surgery, 41, pp. 125-128, (2002); Rodeo S.A., O'Brien S., Warren R.F., Barnes R., Wickiewicz T.L., Dillingham M.F., Turf-toe: An analysis of metatarsophalangeal joint sprains in professional football players, The American Journal of Sports Medicine, 18, pp. 280-285, (1990); Watson T.S., Anderson R.B., Davis W.H., Periarticular injuries to the hallux metatarsophalangeal joint in athletes, Foot and Ankle Clinics, 5, pp. 687-713, (2000); Frey C., Andersen G.D., Feder K.S., Plantarflexion injury to the metatarsophalangeal joint (""sand toe""), Foot Ankle, 17, pp. 576-581, (1996); Clanton T.O., Butler J.E., Eggert A., Injuries to the metatarsophalangeal joints in athletes, Foot & Ankle, 7, pp. 162-176, (1986); Kubitz E.R., Athletic injuries of the first metatarsophalangeal joint, Journal of the American Podiatric Medical Association, 93, pp. 325-332, (2003); Thompson J.C., Netter's Concise Atlas of Orthopaedic Anatomy, pp. 265-267, (2002); Rodeo S.A., Warren R.F., Brien S.J., Pavlov H., Barnes R., Hanks G.A., Diastasis of bipartite sesamoids of the first metatarsophalangeal joint, Foot & Ankle, 14, pp. 425-434, (1993); Graves S.C., Prieskorn D., Mann R.A., Posttraumatic proximal migration of the first metatarsophalangeal joint sesamoids: A report of four cases, Foot & Ankle, 12, pp. 117-122, (1991); Tewes D.P., Fischer D.A., Fritts H.M., Guanche C.A., MRI findings of acute turf toe: A case report and review of anatomy, Clinical Orthopaedics and Related Research, 304, pp. 200-203, (1994)","","","","00264075","","MMEDA","15605946","English","Mil. Med.","Article","Final","","Scopus","2-s2.0-16644401567" "Castellote-Caballero Y.; Valenza M.C.; Martín-Martín L.; Cabrera-Martos I.; Puentedura E.J.; Fernández-de-las-Peñas C.","Castellote-Caballero, Yolanda (55178547800); Valenza, Marie Carmen (26030172100); Martín-Martín, Lydia (54794335500); Cabrera-Martos, Irene (55445259200); Puentedura, Emilio J. (35790583700); Fernández-de-las-Peñas, César (8606836600)","55178547800; 26030172100; 54794335500; 55445259200; 35790583700; 8606836600","Effects of a neurodynamic sliding technique on hamstring flexibility in healthy male soccer players. A pilot study","2013","Physical Therapy in Sport","14","3","","156","162","6","38","10.1016/j.ptsp.2012.07.004","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880513747&doi=10.1016%2fj.ptsp.2012.07.004&partnerID=40&md5=9cbd7d4999c11954d76d05d70f6158b8","Hospital Virgen de las Nieves, Servicio Andaluz de Salud, Spain; Department of Physical Therapy, Universidad de Granada, Granada, Spain; Department of Physical Therapy, School of Allied Health Sciences, University of Nevada Las Vegas, Las Vegas, NV, United States; Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Alcorcón, Madrid, Spain","Castellote-Caballero Y., Hospital Virgen de las Nieves, Servicio Andaluz de Salud, Spain; Valenza M.C., Department of Physical Therapy, Universidad de Granada, Granada, Spain; Martín-Martín L., Department of Physical Therapy, Universidad de Granada, Granada, Spain; Cabrera-Martos I., Department of Physical Therapy, Universidad de Granada, Granada, Spain; Puentedura E.J., Department of Physical Therapy, School of Allied Health Sciences, University of Nevada Las Vegas, Las Vegas, NV, United States; Fernández-de-las-Peñas C., Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Alcorcón, Madrid, Spain","Purpose: To compare the short-term effects of a neurodynamic sliding technique versus control condition on hamstring flexibility in healthy, asymptomatic male soccer players. Subjects: Twenty-eight young male soccer players from Palencia, Spain (mean age 20.7yrs±1.0, range 19-22) with decreased hamstring muscle flexibility. Methods: Subjects were randomly assigned to one of two groups: neurodynamic sliding intervention or no intervention control. Each subject's dominant leg was measured for straight leg raise (SLR) range of motion (ROM) pre- and post-intervention. Subjects received interventions as per group allocation over a 1 week period. Data were analyzed with a 2 (intervention: neurodynamic and control)×2 (time: pre and post) factorial ANOVA with repeated measures and appropriate post-hoc analyses. Results: A significant interaction was observed between intervention and time for hamstring extensibility, F(1,26)=159.187, p<.0005. There was no difference between the groups at the start, p = 743; however, at the end of the study, the groups were significantly different with more range of motion in the group that received neurodynamic interventions, p = 001. The group that received neurodynamic interventions improved significantly over time (p<.001), whereas the control group did not (p = 684). Conclusion: Findings suggest that a neurodynamic sliding technique can increase hamstring flexibility in healthy, male soccer players. © 2012 Elsevier Ltd.","Humans; Muscle; Neurodynamic; Range of motion; Short hamstring syndrome; Skeletal/physiology; Straight leg raise test","Biomechanical Phenomena; Humans; Leg; Male; Muscle Stretching Exercises; Muscle, Skeletal; Pilot Projects; Pliability; Range of Motion, Articular; Soccer; Spain; Young Adult; Humans; Muscle; Neurodynamic; Range of motion; Short hamstring syndrome; Skeletal/physiology; Straight leg raise test; adult; article; athlete; controlled study; hamstring; hamstring flexibility; human; human experiment; intervention study; male; muscle function; musculoskeletal system examination; neurodynamic sliding technique; normal human; physiotherapy; pilot study; priority journal; randomized controlled trial; range of motion; soccer; straight leg raise test; stretching exercise; therapy effect","Aparicio E.Q., Quirante L.B., Blanco C.R., Sendin F.A., Immediate effects of the suboccipital muscle inhibition technique in subjects with short hamstring syndrome, Journal of Manipulative and Physiological Therapeutics, 32, 4, pp. 262-269, (2009); Arnason A., Sigurdsson S.B., Gudmundsson A., Holme I., Engebretsen L., Bahr R., Risk factors for injuries in football, American Journal of Sports Medicine, 32, 1 SUPPL., (2004); Bahr R., Holme I., Risk factors for sports injuries - a methodological approach, British Journal of Sports Medicine, 37, 5, pp. 384-392, (2003); Bennell K., Wajswelner H., Lew P., Schall-Riaucour A., Leslie S., Plant D., Et al., Isokinetic strength testing does not predict hamstring injury in Australian rules footballers, British Journal of Sports Medicine, 32, 4, pp. 309-314, (1998); Boyd B.S., Measurement properties of a hand-held inclinometer during straight leg raise neurodynamic testing, Physiotherapy, 98, 2, pp. 174-179, (2012); Butler D., The sensitive nervous system, (2000); Coppieters M.W., Butler D.S., Do 'sliders' slide and 'tensioners' tension? 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Verrall G.M., Slavotinek J.P., Barnes P.G., The effect of sports specific training on reducing the incidence of hamstring injuries in professional Australian rules football players, British Journal of Sports Medicine, 39, 6, pp. 363-368, (2005); Verrall G.M., Slavotinek J.P., Barnes P.G., Fon G.T., Spriggins A.J., Clinical risk factors for hamstring muscle strain injury: a prospective study with correlation of injury by magnetic resonance imaging, British Journal of Sports Medicine, 35, 6, pp. 435-439, (2001); Wallmann H.W., Gillis C.B., Martinez N.J., The effects of different stretching techniques of the quadriceps muscles on agility performance in female collegiate soccer athletes: a pilot study, North American Journal of Sports Physical Therapy: NAJSPT, 3, 1, pp. 41-47, (2008); Wallmann H.W., Mercer J.A., McWhorter J.W., Surface electromyographic assessment of the effect of static stretching of the gastrocnemius on vertical jump performance, Journal of Strength and Conditioning Research/National Strength & Conditioning Association, 19, 3, pp. 684-688, (2005); Walsh J., Hall T., Agreement and correlation between the straight leg raise and slump tests in subjects with leg pain, Journal of Manipulative and Physiological Therapeutics, 32, 3, pp. 184-192, (2009); Weir J.P., Quantifying test-retest reliability using the intraclass correlation coefficient and the SEM, Journal of Strength and Conditioning Research/National Strength & Conditioning Association, 19, 1, pp. 231-240, (2005); Weppler C.H., Magnusson S.P., Increasing muscle extensibility: a matter of increasing length or modifying sensation?, Physical Therapy, 90, 3, pp. 438-449, (2010); Witvrouw E., Danneels L., Asselman P., D'Have T., Cambier D., Muscle flexibility as a risk factor for developing muscle injuries in male professional soccer players. A prospective study, American Journal of Sports Medicine, 31, 1, pp. 41-46, (2003); Witvrouw E., Mahieu N., Danneels L., McNair P., Stretching and injury prevention: an obscure relationship, Sports in Medicine, 34, 7, pp. 443-449, (2004); Worrell T.W., Perrin D.H., Hamstring muscle injury: the influence of strength, flexibility, warm-up, and fatigue, Journal of Orthopaedic & Sports Physical Therapy, 16, 1, pp. 12-18, (1992)","E.J. Puentedura; University of Nevada Las Vegas, School of Allied Health Sciences, Department of Physical Therapy, Las Vegas, NV 89154-3029, 4505 Maryland Parkway, Box 453029, United States; email: louie.puentedura@unlv.edu","","","18731600","","PTSHB","23142014","English","Phys. Ther. Sport","Article","Final","","Scopus","2-s2.0-84880513747" "Mallo J.; Navarro E.; García-Aranda J.M.; Gilis B.; Helsen W.","Mallo, Javier (23992960900); Navarro, Enrique (24449528700); García-Aranda, Jose M. (23992423100); Gilis, Bart (13003180300); Helsen, Werner (7003789254)","23992960900; 24449528700; 23992423100; 13003180300; 7003789254","Analysis of the kinematical demands imposed on top-class assistant referees during competitive soccer matches","2008","Journal of Strength and Conditioning Research","22","1","","235","242","7","34","10.1519/JSC.0b013e31815fa1d3","https://www.scopus.com/inward/record.uri?eid=2-s2.0-41649116289&doi=10.1519%2fJSC.0b013e31815fa1d3&partnerID=40&md5=ca74e8d39ac0b038e218b7f8d849cccc","Sports Biomechanics Laboratory, Faculty of Physical Activity and Sport Sciences, Madrid, Spain; Refereeing Department, Fédération Internationale de Football Association (FIFA), Zurich, Switzerland; Department of Biomedical Kinesiology, Katholieke Universiteit Leuven, Heverlee, Belgium","Mallo J., Sports Biomechanics Laboratory, Faculty of Physical Activity and Sport Sciences, Madrid, Spain; Navarro E., Sports Biomechanics Laboratory, Faculty of Physical Activity and Sport Sciences, Madrid, Spain; García-Aranda J.M., Refereeing Department, Fédération Internationale de Football Association (FIFA), Zurich, Switzerland; Gilis B., Department of Biomedical Kinesiology, Katholieke Universiteit Leuven, Heverlee, Belgium; Helsen W., Department of Biomedical Kinesiology, Katholieke Universiteit Leuven, Heverlee, Belgium","The aim of this study was to describe the kinematical demands placed on soccer assistant referees during the 2003 U-17 World Championship, and to examine the relationship between the results in the fitness tests adopted by FIFA and match activities. Twenty-two international-level assistant referees were observed during 12 matches and computerized analysis of match activities was performed using a two-dimensional photogrammetric video analysis system based on DLT (direct lineal transformation) algorithms. Before the start of the tournament, the assistant referees completed a 2 × 50-m sprint test and a 12-minute run test. Assistant referees covered on average 6137 ± 539 m during the matches, with 20% of the total distance covered at high velocities (speeds faster than 13 km·h-1). During the second half, time spent standing still increased (P < 0.01) and distance covered jogging (P < 0.05), cruising (P < 0.01) and moving sideways (P < 0.001) decreased. The score in the 12-minute run test showed a low correlation with the entire match distance (r = 0.24; P > 0.05) and with the time spent exercising at a high intensity (r = 0.35; P > 0.05). The 50-m sprint time was not significantly correlated (r = 20.38; P > 0.05) with time spent within the high-intensity activities category. The results of this study demonstrate that assistant referees experience unique kinematical demands during soccer officiating and that the score in the battery of fitness tests adopted by FIFA was not correlated to match activities. © 2008, National Strength and Conditioning Association.","Association football; Bidimensional photogrammetry; Fitness tests; Match analysis","Adult; Analysis of Variance; Biomechanics; Exertion; Fatigue; Humans; Male; Physical Fitness; Probability; Soccer; Task Performance and Analysis; adult; analysis of variance; article; biomechanics; exercise; fatigue; fitness; human; male; physiology; probability; sport; task performance","Abdel-Aziz Y.I., Karara H.M., Direct linear transformation from comparator coordinates into space coordinates in close range photogrammetry, Proceedings of the Symposium on close range photogrammetry, pp. 1-18, (1971); Allard P., Blanchi J.P., Aissaqui R., Bases of three-dimensional reconstruction, Three Dimensional Analysis of Human Movement, pp. 19-40, (1995); Atkinson G., Nevill A.M., Statistical methods for assessing measurement error (reliability) in variables relevant to sports medicine, Sports Med, 26, pp. 217-238, (1988); Balsom P.D., Wood K., Olsson P., Ekblom B., Carbohydrate intake and multiple sprint sports with special reference to football (soccer), Int J Sports Med, 20, pp. 48-52, (1999); Bangsbo J., Norregaard L., Thorso F., Activity profile of competition soccer, Can J Sports Sci, 16, pp. 110-116, (1991); Bansbo J., Norregaard L., Thorso F., The effect of carbohydrate diet on intermittent exercise performance, Int J Sports Med, 13, pp. 152-157, (1992); Castagna C., Abt G., Intermatch variation of match activity in elite Italian soccer referees, J Strength Cond Res, 17, pp. 388-392, (2003); Castagna C., D'Ottavio S., Effect of maximal aerobic power on match performance in elite soccer referees, J Strength Cond Res, 15, pp. 420-425, (2001); Castagna C., Abt G., D'Ottavio S., Relation between fitness tests and match performance in elite Italian soccer referees, J Strength Cond Res, 16, pp. 231-235, (2002); Castagna C., Abt G., D'Ottavio S., The relationship between selected blood lactate thresholds and match performance in elite soccer referees, J Strength Cond Res, 16, pp. 623-627, (2002); Castagna C., Abt G., D'Ottavio S., Activity profile of international-level soccer referees during competitive matches, J Strength Cond Res, 18, pp. 486-490, (2004); Challis J.H., Kerwin D.G., Accuracy assessment and control point configuration when using the DLT for photogrammetry, J Biomech, 25, pp. 1053-1058, (1992); D'Ottavio S., Castagna C., Analysis of match activities in elite soccer referees during actual match play, J Strength Cond Res, 15, pp. 167-171, (2001); Eissmann H.J., D'Hoogue M., Sports medical examinations, Man: Sports Medical Advice for Football Referees, pp. 7-19, (1996); Ekblom B., Applied physiology of soccer, Sports Med, 3, pp. 50-60, (1986); Helsen W., Bultynck J.B., Physical and perceptual-cognitive demands of top-class refereeing in association football, J Sports Sci, 22, pp. 179-189, (2004); Helsen W., Gilis B., Weston M., Errors in judging ""offside"" in association football: Test of the optical error versus the perceptual flash-lag hypothesis, J Sports Sci, 24, pp. 521-528, (2006); Jacobs I., Westilin N., Karlsson J., Rasmusson M., Houghton B., Muscle glycogen and diet in elite soccer players, Eur J Appl Physiol, 48, pp. 297-302, (1982); Krustrup P., Bangsbo J., Physiological demands of top-class soccer refereeing in relation to physical capacity: Effect of intense intermittent exercise training, J Sports Sci, 19, pp. 881-891, (2001); Krustrup P., Mohr M., Bangsbo J., Activity profile and physiological demands of top-class soccer assistant refereeing in relation to training status, J Sports Sci, 20, pp. 861-871, (2002); Krustrup P., Mohr M., Amstrup T., Rysgaard T., Johansen J., Steensberg A., Pedersen P.K., Bangsbo J., The Yo-yo intermittent recovery test: Physiological response, reliability, and validity, Med Sci Sports Exerc, 35, pp. 697-705, (2003); Krustrup P., Mohr M., Ellinsgaard H., Bangsbo J., Physical demands during an elite female soccer game: Importance of training status, Med Sci Sports Exerc, 37, pp. 1242-1248, (2005); Lees A., Nolan L., The biomechanics of soccer: A review, J Sports Sci, 16, pp. 211-234, (1998); Mallo J., Navarro E., Analysis of the load imposed on under-19 soccer players during typical football training drills, J Sports Sci, 22, pp. 510-511, (2004); Mallo J., Navarro E., Garcia-Aranda J.M., Gilis B., Helsen W., Physical performance and activity profile of top-class association football referees in relation to physical capacity, J Sports Sci, 25, pp. 805-813, (2007); Mohr M., Krustrup P., Bangsbo J., Match performance of highstandard soccer players with special reference to development of fatigue, J Sports Sci, 21, pp. 519-528, (2003); Mohr M., Krustrup P., Nybo L., Nielsen J.J., Bangsbo J., Muscle temperature and sprint performance during soccer matches - beneficial effect of re-warm-up at half time, Scand J Med Sci Sports, 14, pp. 156-162, (2004); Mohr M., Krustrup P., Bangsbo J., Fatigue in soccer: A brief review, J Sports Sci, 23, pp. 593-599, (2005); Reilly T., Bowen T., Exertional costs of changes in directional modes of running, Percept Mot Skills, 58, pp. 149-150, (1984); Reilly T., Gregson W., Special populations: The referee and assistant referee, J Sports Sci, 24, pp. 795-801, (2006); Saltin B., Metabolic fundamentals in exercise, Med Sci Sports, 5, pp. 137-146, (1973); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer. An update, Sports Med, 35, pp. 501-536, (2005); Thomas J.R., Nelson J.K., Research methods in physical activity, (2001); Weston M., Helsen W., MacMahon C., Kirkendall D., The impact of specific high-intensity training sessions on football referees' fitness levels, Am J Sports Med, 32, (2004); Woltring H.J., On optimal smoothing and derivate estimation from noisy displacement data in biomechanics, Human Mov Sci, 4, pp. 229-245, (1985)","J. Mallo; Sports Biomechanics Laboratory, Faculty of Physical Activity and Sport Sciences, Madrid, Spain; email: javiermallo@hotmail.com","","NSCA National Strength and Conditioning Association","10648011","","","18296981","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-41649116289" "Meylan C.M.P.; Nosaka K.; Green J.; Cronin J.B.","Meylan, Cesar M.P. (26768140200); Nosaka, Kazunori (7005201843); Green, Jonathan (55463728200); Cronin, John B. (7103340842)","26768140200; 7005201843; 55463728200; 7103340842","The effect of three different start thresholds on the kinematics and kinetics of a countermovement jump","2011","Journal of Strength and Conditioning Research","25","4","","1164","1167","3","35","10.1519/JSC.0b013e3181c699b9","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79953876801&doi=10.1519%2fJSC.0b013e3181c699b9&partnerID=40&md5=4194dca790ee93cdcf7134a715ac84f1","School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia; Sport Performance Research Institute New Zealand, AUT University, Auckland, New Zealand; ICON Technologies Pty Ltd., Victoria Park, WA, Australia","Meylan C.M.P., School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia, Sport Performance Research Institute New Zealand, AUT University, Auckland, New Zealand; Nosaka K., School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia; Green J., ICON Technologies Pty Ltd., Victoria Park, WA, Australia; Cronin J.B., School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia, Sport Performance Research Institute New Zealand, AUT University, Auckland, New Zealand","Meylan, CMP, Nosaka, K, and Green, J, Cronin, JB. The effect of three different start thresholds on the kinematics and kinetics of a countermovement jump. J Strength Cond Res 25(4): 11641167, 2011-Force plates are used to quantify kinematic and kinetic variables of countermovement jump (CMJ). The jump is initiated by an unloading phase resulting in the force-time curve to drop below body weight (BW). However, there is no consensus in the literature to determine the start of the analysis of the jump (i.e., start threshold). To determine the effects and reliability of 3 different start thresholds on the kinematics and kinetics of a CMJ, 10 soccer players performed 3 CMJs for maximal jump height 30 seconds apart. Initiation of the jump movement was defined as the point where the force-time curve dropped below a threshold of 2.5, 5, or 10% BW. Significant differences were found in all variables except eccentric and concentric peak force and force at zero velocity between 2.5 and 10%, and 5 and 10% thresholds. Similar results were found for the 2.5 and 5% threshold variables except that no significant difference was found in the concentric ground contact time. The different thresholds did not appear to influence the variability of the measurement and only concentric time to peak power was found to have high variability. These data suggest that the use of any of the start thresholds can be used to determine the starting point of a CMJ considering their reliability. However, the 2.5% BW threshold is preferable because most of the force-time signal can be considered for analysis, and significant differences in eccentric and concentric kinematic and kinetic variables were found when a higher threshold was used. © 2011 National Strength and Conditioning Association.","Concentric; Eccentric; Force; Force platform; Power; Reliability","Adolescent; Athletes; Biomechanics; Exercise Test; Humans; Muscle Strength; Muscle, Skeletal; Soccer; Young Adult; adolescent; adult; article; athlete; biomechanics; exercise test; human; instrumentation; methodology; muscle strength; physiology; skeletal muscle; sport","Atkinson G., Nevill A.M., Statistical methods for assessing measurement error (reliability) in variables relevant to sports medicine, Sports Medicine, 26, 4, pp. 217-238, (1998); Chiu L.Z.F., Schilling B.K., Fry A.C., Weiss L.W., Measurement of resistance exercise force expression, Journal of Applied Biomechanics, 20, 2, pp. 204-212, (2004); Cormack S., Newton R.U., McGuigan M.R., Doyle T., Reliability ofmeasures obtained during single and repeated countermovement jumps, Int J Sports Physiol Perf, 3, pp. 131-144, (2008); Cornwell A., Nelson A.G., Sidaway B., Actute effect of passive muscle stretching on vertical jump performance, J Hum Mov Stud, 40, pp. 307-324, (2001); Cronin J.B., Hing R.D., McNair P.J., Reliability and validity of a linear position transducer for measuring jump performance, Journal of Strength and Conditioning Research, 18, 3, pp. 590-593, (2004); Dowling J., Vamos L., Identification of kinetic and temporal factors related to vertical jump performance, J Appl Biomech, 9, pp. 95-110, (1993); Epperson J.F., An Introduction to Numerical Methods and Analysis, pp. 253-264, (2002); Hanson E.D., Leigh S., Mynark R.G., Acute effects of heavy-and light-load squat exercise on the kinetic measures of vertical jumping, J Strength Cond Res, 21, pp. 1012-1017, (2007); Knudson D., Bennett K., Corn R., Leick D., Smith C., Acute Effects of Stretching Are Not Evident in the Kinematics of the Vertical Jump, Journal of Strength and Conditioning Research, 15, 1, pp. 98-101, (2001); Markovic G., Jaric S., Scaling of muscle power to body size: The effect of stretch-shortening cycle, European Journal of Applied Physiology, 95, 1, pp. 11-19, (2005); Sheppard J.M., Cormack S., Taylor K.L., McGuigan M.R., Newton R.U., Assessing the force-velocity characteristics of the leg extensors in well-trained athletes: The incremental load power profile, J Strength Cond Res, 22, pp. 1320-1326, (2008); Sheppard J.M., Doyle T., Taylor K.L., A methodological and performance comparison of free weight and smith-machine jump squats, J Aust Strength Cond, 16, pp. 5-9, (2008); Toumi H., Best T.M., Martin A., F'Guyer S., Poumarat G., Effects of eccentric phase velocity of plyometric training on the vertical jump, International Journal of Sports Medicine, 25, 5, pp. 391-398, (2004); Ugrinowitsch C., Tricoli V., Rodacki A., Batista M., Ricard M., Influence of training background on jumping height, J Strength Cond Res, 21, pp. 848-852, (2007); Vetter R.E., Effects of six warm-up protocols on sprint and jump performance, J Strength Cond Res, 21, pp. 819-823, (2007)","C. M. P. Meylan; School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia; email: cesar.meylan@aut.ac.nz","","","10648011","","","20664368","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-79953876801" "Barbieri F.A.; Gobbi L.T.B.; Santiago P.R.P.; Cunha S.A.","Barbieri, Fabio Augusto (35798078800); Gobbi, Lilian Teresa Bucken (18233668400); Santiago, Paulo Roberto Pereira (36098423400); Cunha, Sergio Augusto (16416879600)","35798078800; 18233668400; 36098423400; 16416879600","Dominant–non-dominant asymmetry of kicking a stationary and rolling ball in a futsal context","2015","Journal of Sports Sciences","33","13","","1411","1419","8","27","10.1080/02640414.2014.990490","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929733563&doi=10.1080%2f02640414.2014.990490&partnerID=40&md5=a96926276e36d9c3572468ce0d7079d9","Laboratory of Information, Vision and Action, Univ. Estadual Paulista, Bauru, SP, Brazil; Posture and Gait Studies Lab, Univ. Estadual Paulista, Rio Claro, SP, Brazil; USP School of Physical Education and Sport of Ribeirao Preto, University of Sao Paulo, Ribeirão Preto, Brazil; Biomechanical Instrumentation Lab, UNICAMP – State University of Campinas SP, Campinas, Brazil","Barbieri F.A., Laboratory of Information, Vision and Action, Univ. Estadual Paulista, Bauru, SP, Brazil, Posture and Gait Studies Lab, Univ. Estadual Paulista, Rio Claro, SP, Brazil; Gobbi L.T.B., Posture and Gait Studies Lab, Univ. Estadual Paulista, Rio Claro, SP, Brazil; Santiago P.R.P., USP School of Physical Education and Sport of Ribeirao Preto, University of Sao Paulo, Ribeirão Preto, Brazil; Cunha S.A., Biomechanical Instrumentation Lab, UNICAMP – State University of Campinas SP, Campinas, Brazil","Abstract: The aim of this study was to analyse the characteristics of the asymmetries in the dominant and non-dominant limbs when kicking stationary and rolling balls. Ten experienced Brazilian amateur futsal players participated in this study. Each participant performed kicks under two conditions (stationary ball vs. rolling ball) with the dominant and non-dominant limbs (five kicks per condition per limb). We analysed the kicking accuracy, ball and foot velocities, angular joint displacement and velocity. The asymmetry between the dominant and non-dominant limbs was analysed by symmetry index and two-way repeated measures ANOVA. The results did not reveal any interaction between the condition and limb for ball velocity, foot velocity and accuracy. However, kicking with the dominant limb in both kicks showed higher ball velocity (stationary ball: dominant – 24.27 ± 2.21 m · s‒1 and non-dominant – 21.62 ± 2.26 m · s‒1; rolling ball: dominant – 23.88 ± 2.71 m · s‒1 and non-dominant – 21.42 ± 2.25 m · s‒1), foot velocity (stationary ball: dominant – 17.61 ± 1.87 m · s‒1 and non-dominant – 15.58 ± 2.69 m · s‒1; rolling ball: dominant – 17.25 ± 2.26 m · s‒1 and non-dominant – 14.77 ± 2.35 m · s‒1) and accuracy (stationary ball: dominant – 1.17 ± 0.84 m and non-dominant – 1.56 ± 1.30 m; rolling ball: dominant – 1.31 ± 0.91 m and non-dominant – 1.97 ± 1.44 m). In addition, the angular joint adjustments were dependent on the limb in both kicks (the kicks with non-dominant limb showed lower hip external rotation than the kicks with the dominant limb), indicating that the hip joint is important in kick performance. In conclusion, the kicks with the non-dominant limb showed different angular adjustments in comparison to kicks with the dominant limb. In addition, kicking a rolling ball with the non-dominant limb showed higher asymmetry for accuracy, indicating that complex kicks are more asymmetric. © 2014, © 2014 Taylor & Francis.","kick; motor control; non-dominant limb; performance","Ankle Joint; Biomechanical Phenomena; Brazil; Foot; Hip Joint; Humans; Knee Joint; Lower Extremity; Male; Motor Skills; Soccer; Young Adult; ankle; biomechanics; Brazil; foot; hip; human; knee; leg; male; motor performance; physiology; soccer; young adult","Abdel-Aziz Y.I., Karara H.M., Direct linear transformation from comparator coordinates into object space coordinates in close-range photogrammetry, 1-18, (1971); Alcock A.M., Gilleard W., Hunter A.B., Baker J., Brown N., Curve and instep kick kinematics in elite female footballers, Journal of Sports Science, 30, pp. 387-394, (2012); Andersen T.B., Dorge H.C., The influence of speed of approach and accuracy constraint on the maximal speed of the ball in soccer kicking, Scandinavian Journal of Medicine and Science in Sports, 21, pp. 79-84, (2011); Barbieri F.A., Gobbi L.T.B., Santiago P.R.P., Cunha S.A., Performance comparisons of the kicking of stationary and rolling balls in a futsal context, Sports Biomechanics, 9, pp. 1-15, (2010); Barbieri F.A., Santiago P.R.P., Gobbi L.T.B., Cunha S.A., Dominant and non-dominant support limb kinematics variability during futsal kick, Portuguese Journal Sport Science, 8, pp. 68-76, (2008); Barfield W.R., Effects of selected kinematics and kinetic variables on instep kicking with dominant and non-dominant limbs, Journal of Human Movement Studies, 29, pp. 251-272, (1995); Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, Journal of Sports Science and Medicine, 1, pp. 72-79, (2002); Bennett S., Button C., Kingsbury D., Davids K., Manipulating visual informational constraints during practice enhances the acquisition of catching skill in children, Research Quarterly for Exercise and Sport, 70, pp. 220-232, (1999); Bracken M.B., Holford T.R., Neurological and functional status 1 year after acute spinal cord injury: Estimates of functional recovery in National Acute Spinal Cord Injury Study II from results modeled in National Acute Spinal Cord Injury Study III, Journal of Neurosurgery, 96, pp. 259-266, (2002); Bray K., Kerwin D.G., Modelling the flight of a soccer ball in a direct free kick, Journal of Sports Sciences, 21, pp. 75-85, (2003); Bryden P.J., Lateral preferences, skilled behavior and task complexity: Hand and foot, Side Bias: A Neuropsychological perspective, pp. 225-248, (2000); Cappozzo A., Catani F., Croce U.D., Leardini A., Position and orientation in space of bones during movement: Anatomical frame definition and determination, Clinical Biomechanics, 10, pp. 171-178, (1995); Carey D.P., Smith G., Smith D.T., Shepherd J.W., Skriver J., Ord L., Rutland A., Footedness in world soccer: An analysis of France '98, Journal of Sports Sciences, 19, pp. 855-864, (2001); Carnahan H., Elliott D., Pedal asymmetry in the reproduction of spatial locations, Cortex, 23, pp. 157-159, (1987); Chao E.Y.S., Justification of triaxial goniometer for the measurement of joint rotation, Journal of Biomechanics, 13, pp. 989-1006, (1980); Cleveland W.S., Robust locally weighted regression and smoothing scatterplots, Journal of the American Statistical Association, 74, pp. 829-836, (1979); Coren S., The lateral preference inventory for measurement of handedness, footedness, eyedness and earedness: Norms for young adults, Bulletin of the Psychonomic Society, 31, pp. 1-3, (1993); Davids K., Lees A., Burwitz L., Understanding and measuring coordination and control in kicking skills in soccer: Implications for talent identification and skill acquisition, Journal of Sports Sciences, 18, pp. 703-714, (2000); Dorge H.C., Andersen T.B., SOrensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, pp. 293-299, (2002); Egan C.D., Verheul M.H.G., Savelsbergh G.J.P., Effects of experience on the coordination of internally and externally timed soccer kicks, Journal of Motor Behavior, 39, pp. 423-432, (2007); Figueroa P.J., Leite N.J., Barros R.M.L., A flexible software for tracking of markers used in human motion analysis, Computer Methods and Programs in Biomedicine, 72, pp. 155-165, (2003); Katis A., Giannadakis E., Kannas T., Amiridis I., Kellis E., Lees A., Mechanisms that influence accuracy of the soccer kick, Journal of Electromyography and Kinesiology, 23, pp. 125-131, (2013); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Science and Medicine, 6, pp. 154-165, (2007); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, pp. 917-927, (1998); MacGill R., Tukey J.W., Larsen W.A., Variations of box plots, The American Statistician, 32, pp. 12-16, (1978); McLean B.D., Tumilty D.M., Left-right asymmetry in two types of soccer kick, British Journal of Sports Medicine, 27, pp. 260-262, (1993); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 24, pp. 529-541, (2006); Putnam C.A., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Medicine & Science in Sports & Exercise, 23, pp. 130-144, (1991); Rahnama N., Lees A., Bambaecichi E., A comparison of muscle strength and flexibility between the preferred and non-preferred leg in English soccer players, Ergonomics, 48, pp. 1568-1575, (2005); Savelsbergh G.J.P., Van Der Kamp J., Information in learning to coordinate and control movements: Is there a need for specificity of practice?, International Journal of Sport Psychology, 31, pp. 476-484, (2000); Shang G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomechanics, 4, pp. 59-72, (2005); Teixeira L.A., Silva M.V., Carvalho M., Reduction of lateral asymmetries in dribbling: The role of bilateral practice, Laterality, 8, pp. 53-65, (2003); Wong P., Chamari K., Chaouachi A., Mao D.W., Wisloff U., Hong Y., Difference in plantar pressure between the preferred and non-preferred feet in four soccer-related movements, British Journal of Sports Medicine, 41, pp. 84-92, (2007); Zatsiorsky V.M., Kinematics of human motion, (1998)","F.A. Barbieri; Laboratório de Estudos da Postura e da Locomoção-Departamento de Educação Física, Universidade Estadual Paulista-UNESP-IB-Rio Claro, São Paulo, Avenida 24-A, 1515-Bela Vista-CEP: 13.506-900-Rio Claro, Brazil; email: barbieri@fc.unesp.br","","Routledge","02640414","","JSSCE","25554927","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-84929733563" "Monfort S.M.; Pradarelli J.J.; Grooms D.R.; Hutchison K.A.; Onate J.A.; Chaudhari A.M.W.","Monfort, Scott M. (56581629500); Pradarelli, Jared J. (57208389549); Grooms, Dustin R. (55616564700); Hutchison, Keith A. (7005354201); Onate, James A. (7004831141); Chaudhari, Ajit M.W. (7006736811)","56581629500; 57208389549; 55616564700; 7005354201; 7004831141; 7006736811","Visual-Spatial Memory Deficits Are Related to Increased Knee Valgus Angle During a Sport-Specific Sidestep Cut","2019","American Journal of Sports Medicine","47","6","","1488","1495","7","39","10.1177/0363546519834544","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85064677384&doi=10.1177%2f0363546519834544&partnerID=40&md5=8e13627f967e8d188c8e52749e32999e","Department of Mechanical and Industrial Engineering, Montana State University, Bozeman, MT, United States; Department of Rehabilitation Medicine, University of Washington, Seattle, WA, United States; Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, OH, United States; School of Applied Health Sciences and Wellness, College of Health Sciences and Professions, Ohio University, Athens, OH, United States; Department of Psychology, Montana State University, Bozeman, MT, United States; School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH, United States; Sports Medicine Research Institute, The Ohio State University, Columbus, OH, United States","Monfort S.M., Department of Mechanical and Industrial Engineering, Montana State University, Bozeman, MT, United States; Pradarelli J.J., Department of Rehabilitation Medicine, University of Washington, Seattle, WA, United States; Grooms D.R., Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, OH, United States, School of Applied Health Sciences and Wellness, College of Health Sciences and Professions, Ohio University, Athens, OH, United States; Hutchison K.A., Department of Psychology, Montana State University, Bozeman, MT, United States; Onate J.A., School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH, United States, Sports Medicine Research Institute, The Ohio State University, Columbus, OH, United States; Chaudhari A.M.W., School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH, United States, Sports Medicine Research Institute, The Ohio State University, Columbus, OH, United States"," Background: Identifying athletes at an increased risk of injury is a promising approach to improve the effect of injury prevention interventions; however, it requires first identifying the potential athlete-specific risk factors. Cognitive ability was recently shown to correlate with noncontact anterior cruciate ligament injury rates and lower extremity mechanics, marking an underexplored area. A better understanding of how individuals’ cognitive ability is associated with neuromuscular control during sport-specific tasks may improve injury prevention. Hypothesis: Athletes with lower cognitive performance on a standardized cognitive assessment would demonstrate greater increases in knee valgus angle and moment when performing a sidestep cut with soccer ball dribbling versus without. Visual-spatial memory was expected to demonstrate stronger relationships than reaction time or processing speed. Study Design: Descriptive laboratory study. Methods: Fifteen male collegiate club soccer players participated (mean ± SD: 20.7 ± 2.0 years, 1.78 ± 0.07 m, 76.5 ± 8.9 kg). Participants performed anticipated 45° run-to-cut trials with and without a dual task of dribbling a soccer ball. Peak early-stance knee valgus angle and moment for the plant limb were calculated. Participants also completed a cognitive assessment to evaluate visual memory, verbal memory, reaction time, and processing speed. These composite scores were entered as candidate predictors for a stepwise regression analysis on the dual-task change scores in lower extremity biomechanical parameters (ie, ball handling – non–ball handling). Results: Visual memory composite score (a measure of visual-spatial memory) was the only cognitive outcome significantly associated with the change in biomechanical parameters. Each unit decrease in the visual memory composite score was associated with an increase of 0.21°± 0.05° in peak knee valgus angle during the ball-handling task as compared with the non–ball handling task (R 2 = 52%, P =.003). Conclusion: Visual-spatial memory was associated with neuromuscular control during a sidestep cutting task during soccer ball dribbling, with deficits in this cognitive domain being associated with increased peak knee valgus angle. Clinical Relevance: Assessing visual-spatial memory ability may provide useful information to better understand conditions associated with impaired neuromuscular control and to potentially identify athletes at an elevated risk for musculoskeletal injury. © 2019 The Author(s).","ACL; cognition; dual task; knee valgus","Adolescent; Athletes; Biomechanical Phenomena; Humans; Knee Injuries; Knee Joint; Lower Extremity; Male; Memory Disorders; Soccer; Young Adult; adolescent; athlete; biomechanics; complication; human; injury; knee; knee injury; lower limb; male; memory disorder; pathology; soccer; young adult","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in National Collegiate Athletic Association basketball and soccer: a 13-year review, Am J Sports Med, 33, 4, pp. 524-531, (2005); Almonroeder T.G., Kernozek T., Cobb S., Wang J., Huddleston W., Gus T., Divided attention during cutting influences lower extremity mechanics in female athletes, Sport Biomech, 3141, pp. 1-13, (2017); 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Monfort S.M., Comstock R.D., Collins C.L., Onate J.A., Best T.M., Chaudhari A.M., Association between ball-handling versus defending actions and acute noncontact lower extremity injuries in high school basketball and soccer, Am J Sports Med, 43, 4, pp. 802-807, (2015); Myklebust G., Engebretsen L., Braekken I.H., Skjolberg A., Olsen O.-E., Bahr R., Prevention of anterior cruciate ligament injuries in female team handball players: a prospective intervention study over three seasons, Clin J Sport Med, 13, 2, pp. 71-78, (2003); Petushek E.J., Sugimoto D., Stoolmiller M., Smith G., Myer G.D., Evidence-based best-practice guidelines for preventing anterior cruciate ligament injuries in young female athletes: a systematic review and meta-analysis, Am J Sports Med, (2018); Schatz P., Pardini J.E., Lovell M.R., Collins M.W., Podell K., Sensitivity and specificity of the ImPACT Test Battery for concussion in athletes, Arch Clin Neuropsychol, 21, 1, pp. 91-99, (2006); Shultz S.J., Schmitz R.J., Nguyen A., Et al., ACL Research Retreat V: an update on ACL injury risk and prevention, March 25-27, 2010, Greensboro, NC, J Athl Train, 45, 5, pp. 499-508, (2010); Swanik C.B., Covassin T., Stearne D.J., Schatz P., The relationship between neurocognitive function and noncontact anterior cruciate ligament injuries, Am J Sports Med, 35, 6, pp. 943-948, (2007); Tegner Y., Lysholm J., Rating systems in the evaluation of knee ligament injuries, Clin Orthop Relat Res, 198, pp. 43-49, (1985); van Mechelen W., Hlobil H., Kemper H.C.G., Incidence, severity, aetiology and prevention of sports injuries: a review of concepts, Sport Med, 14, 2, pp. 82-99, (1992); Wilkerson G.B., Neurocognitive reaction time predicts lower extremity sprains and strains, Int J Athl Ther Train, 17, 6, pp. 4-9, (2012); Zebis M.K., Andersen L.L., Brandt M., Et al., Effects of evidence-based prevention training on neuromuscular and biomechanical risk factors for ACL injury in adolescent female athletes: a randomised controlled trial, Br J Sports Med, 50, 9, pp. 552-557, (2016)","S.M. Monfort; Department of Mechanical and Industrial Engineering, Montana State University, Bozeman, United States; email: scott.monfort@montana.edu","","SAGE Publications Inc.","03635465","","AJSMD","30986095","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-85064677384" "Azevedo R.R.; da Rocha E.S.; Franco P.S.; Carpes F.P.","Azevedo, Renato R. (57192553742); da Rocha, Emmanuel S. (55807868900); Franco, Pedro S. (55806737700); Carpes, Felipe P. (16238221400)","57192553742; 55807868900; 55806737700; 16238221400","Plantar pressure asymmetry and risk of stress injuries in the foot of young soccer players","2017","Physical Therapy in Sport","24","","","39","43","4","31","10.1016/j.ptsp.2016.10.001","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85006790267&doi=10.1016%2fj.ptsp.2016.10.001&partnerID=40&md5=33bc897a8b70696ff4817fcb439f6050","Applied Neuromechanics Research Group, Faculty of Health Sciences, Federal University of Pampa, Uruguaiana, RS, Brazil; Graduate Program in Physical Education, Physical Education and Sports Centre, Federal University of Santa Maria, Santa Maria, RS, Brazil","Azevedo R.R., Applied Neuromechanics Research Group, Faculty of Health Sciences, Federal University of Pampa, Uruguaiana, RS, Brazil, Graduate Program in Physical Education, Physical Education and Sports Centre, Federal University of Santa Maria, Santa Maria, RS, Brazil; da Rocha E.S., Applied Neuromechanics Research Group, Faculty of Health Sciences, Federal University of Pampa, Uruguaiana, RS, Brazil, Graduate Program in Physical Education, Physical Education and Sports Centre, Federal University of Santa Maria, Santa Maria, RS, Brazil; Franco P.S., Applied Neuromechanics Research Group, Faculty of Health Sciences, Federal University of Pampa, Uruguaiana, RS, Brazil, Graduate Program in Physical Education, Physical Education and Sports Centre, Federal University of Santa Maria, Santa Maria, RS, Brazil; Carpes F.P., Applied Neuromechanics Research Group, Faculty of Health Sciences, Federal University of Pampa, Uruguaiana, RS, Brazil, Graduate Program in Physical Education, Physical Education and Sports Centre, Federal University of Santa Maria, Santa Maria, RS, Brazil","Background Asymmetries in the magnitude of plantar pressure are considered a risk factor for stress fracture of the fifth metatarsal in soccer athletes. Objective To investigate the presence of plantar pressure asymmetries among young soccer athletes. Design Observational. Setting Laboratory. Participants Thirty young adolescents divided into a soccer player group (n = 15) or a matched control group (n = 15). Main outcome measures Mean plantar pressure was determined for seven different regions of the foot. Data were compared between the preferred and non-preferred foot, and between the groups, during barefoot standing on a pressure mat system. Results Higher pressure was found in the hallux, 5th metatarsal and medial rearfoot of the non-preferred foot in the young soccer players. These asymmetries were not observed in the control group. Magnitudes of plantar pressure did not differ between the groups. Conclusion Young soccer players present asymmetries in plantar pressure in the hallux, 5th metatarsal and medial rearfoot, with higher pressure observed in the non-preferred foot. © 2016 Elsevier Ltd","Fifth metatarsal; Foot; Plantar pressure; Soccer","Adolescent; Athletic Injuries; Biomechanical Phenomena; Case-Control Studies; Foot Injuries; Fractures, Stress; Humans; Posture; Pressure; Risk Factors; Shoes; Soccer; adolescent; Article; body height; body mass; clinical assessment; controlled study; foot fracture; hallux; human; human experiment; metatarsal bone; musculoskeletal system parameters; plantar pressure asymmetry; risk assessment; risk factor; soccer player; sport injury; stress fracture; training; biomechanics; body posture; case control study; Foot Injuries; Fractures, Stress; injuries; pathophysiology; pressure; risk factor; shoe; soccer","Ball K., Loading and performance of the support leg in kicking, Journal of Science and Medicine in Sport, 16, 5, pp. 455-459, (2013); Barnes C., Archer D.T., Hogg B., Bush M., Bradley P.S., The evolution of physical and technical performance parameters in the english premier league, International Journal of Sports Medicine, 35, 13, pp. 1095-1100, (2014); Bentley J.A., Ramanathan A.K., Arnold G.P., Wang W., Abboud R.J., Harmful cleats of football boots: A biomechanical evaluation, Foot and Ankle Surgery, 17, 3, pp. 140-144, (2011); Carey D.P., Smith G., Smith D.T., Shepherd J.W., Skriver J., Ord L., Et al., Footedness in world soccer: An analysis of France ‘98, Journal of Sports Sciences, 19, 11, pp. 855-864, (2001); Carl H.D., Pauser J., Swoboda B., Jendrissek A., Brem M., Soccer boots elevate plantar pressures in elite male soccer professionals, Clinical Journal of Sport Medicine, 24, 1, pp. 58-61, (2014); Di Salvo V., Baron R., Tschan H.C., Montero F.J., Bachl N., Et al., Performance characteristics according to playing position in elite soccer, International Journal of Sports Medicine, 28, 3, pp. 222-227, (2007); Ekstrand J., van Dijk C.N., Fifth metatarsal fractures among male professional footballers: A potential career-ending disease, British Journal of Sports Medicine, 47, 12, pp. 754-758, (2013); Fachina R.J.F.G., Andrade Mdos S., Silva F.R., Waszczuk-Junior S., Montagner P.C., Borin J.P., Et al., Descriptive epidemiology of injuries in a Brazilian premier league soccer team, Open Access Journal of Sports Medicine, 4, pp. 171-174, (2013); Fernandez-Seguin L.M.D., Mancha J.A., Sanchez Rodriguez R., Escamilla Martinez E., Gomez Martin B., Et al., Comparison of plantar pressures and contact area between normal and cavus foot, Gait & Posture, 39, 2, pp. 789-792, (2014); Fetzer G.B., Wright R.W., Metatarsal shaft fractures and fractures of the proximal fifth metatarsal, Clinics in Sports Medicine, 25, 1, pp. 139-150, (2006); FIFA, FIFA big count 2006, (2007); Fujitaka K., Taniguchi A., Isomoto S., Kumai T., Otuki S., Okubo M., Et al., Pathogenesis of fifth metatarsal fractures in college soccer players, Orthopaedic Journal of Sports Medicine, 3, 9, (2015); Holewski J.J., Stess R.M., Graf P.M., Grunfeld C., Aesthesiometry: Quantification of cutaneous pressure sensation in diabetic peripheral neuropathy, Journal of Rehabilitation Research and Development, 25, 2, pp. 1-10, (1988); Hunt K.J., Goeb Y., Esparza R., Malone M., Shultz R., Matheson G., Site-specific loading at the fifth metatarsal base in rehabilitative devices: Implications for Jones fracture treatment, PM&R, (2014); Petry V.K., Paletta J.R., El-Zayat B.F., Efe T., Michel N.S., Skwara A., Influence of a training session on postural stability and foot loading patterns in soccer players, Orthopedic Reviews (Pavia), 8, 1, (2016); Porter D.A., Duncan M., Meyer S.J., Fifth metatarsal jones fracture fixation with a 4.5-mm cannulated stainless steel screw in the competitive and recreational athlete: A clinical and radiographic evaluation, American Jouranl of Sports Medicine, 33, 5, pp. 726-733, (2005); Rice H., Nunns M., House C., Fallowfield J., Allsopp A., Dixon S., High medial plantar pressures during barefoot running are associated with increased risk of ankle inversion injury in royal marine recruits, Gait Posture, 38, 4, pp. 614-618, (2013); da Rocha E.S., Bratz D.T., Gubert L.C., de David A., Carpes F.P., Obese children experience higher plantar pressure and lower foot sensitivity than non-obese, Clinical Biomechanics (Bristol, Avon), 29, 7, pp. 822-827, (2014); Sims E.L., Hardaker W.M., Queen R.M., Gender differences in plantar loading during three soccer-specific tasks, British Journal of Sports Medicine, 42, 4, pp. 272-277, (2008); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer: An update, Sports Medicine, 35, 6, pp. 501-536, (2005); Teixeira L.A., de Oliveira D.L., Romano R.G., Correa S.C., Leg preference and interlateral asymmetry of balance stability in soccer players, Research Quarterly for Exercise and Sport, 82, 1, pp. 21-27, (2011); Theron N., Schwellnus M., Derman W., Dvorak J., Illness and injuries in elite football players–a prospective cohort study during the FIFA confederations cup 2009, Clinical Journal of Sport Medicine, 23, 5, pp. 379-383, (2013); Wong P.L., Chamari K., Chaouachi A., Mao de W., Wisloff U., Hong Y., Difference in plantar pressure between the preferred and non-preferred feet in four soccer-related movements, British Journal of Sports Medicine, 41, 2, pp. 84-92, (2007)","F.P. Carpes; Federal University of Pampa, Laboratory of Neuromechanics, Uruguaiana, BR 472 km 592, 97500-970, Brazil; email: carpes@unipampa.edu.br","","Churchill Livingstone","1466853X","","PTSHB","27863793","English","Phys. Ther. Sport","Article","Final","","Scopus","2-s2.0-85006790267" "Alcántara E.; Gámez J.; Rosa D.; Sanchis M.","Alcántara, E. (55939280600); Gámez, J. (13404797900); Rosa, D. (34877601600); Sanchis, M. (58578895600)","55939280600; 13404797900; 34877601600; 58578895600","Analysis of the influence of rubber infill morphology on the mechanical performance of artificial turf surfaces for soccer","2009","Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","223","1","","1","9","8","25","10.1243/17543371JSET27","https://www.scopus.com/inward/record.uri?eid=2-s2.0-70350614348&doi=10.1243%2f17543371JSET27&partnerID=40&md5=94ef51332fd4083f859f07e0316514fe","Instituto de Biomecánica de Valencia, Universidad Politecnica de Valencia, Camino de Vera S/n, Valencia, E-46022, Spain","Alcántara E., Instituto de Biomecánica de Valencia, Universidad Politecnica de Valencia, Camino de Vera S/n, Valencia, E-46022, Spain; Gámez J., Instituto de Biomecánica de Valencia, Universidad Politecnica de Valencia, Camino de Vera S/n, Valencia, E-46022, Spain; Rosa D., Instituto de Biomecánica de Valencia, Universidad Politecnica de Valencia, Camino de Vera S/n, Valencia, E-46022, Spain; Sanchis M., Instituto de Biomecánica de Valencia, Universidad Politecnica de Valencia, Camino de Vera S/n, Valencia, E-46022, Spain","Artificial turf is increasingly being used in the construction of football pitches. One of its characteristics is an infill of sand and rubber granules. At present, different materials and layer thicknesses, as well as grain sizes are used for the sand and mainly for the rubber, but they are chosen with little scientific evidence about their influence on the mechanical and biomechanical properties of the pitch. Based on knowledge from materials science, it is reasonable to suggest that grain morphology may have a large influence on pitch performance. This paper presents research conducted to assess the influence of different parameters related to infill grain morphology on the mechanical properties of artificial turf (force reduction (%), vertical deformation (mm) and vertical ball bounce (m)), as well as on their wear with use, measured according to the Fédération Internationale de Football Association (FIFA) procedures. The results show a significant reduction of pitch performance with use and a significant influence of grain morphology in mechanical response of artificial turf with respect to impact forces and ball rebound. © IMechE 2009.","Artificial turf; Impact force; Morphology; Pitch performance; Rubber granules","Biomechanics; Granulation; Morphology; Rubber; Artificial turf; Artificial turfs; Biomechanical properties; Football pitches; Grain morphologies; Grain size; Impact force; Mechanical performance; Mechanical response; Pitch performance; Rubber granules; Scientific evidence; Vertical deformation; Mechanical properties","Valiant G.A., Traction characteristics of outsoles for use on artificial playing surfaces, Natural and Artificial Playing Fields: Characteristics and Safety Features, ASTM 1073, pp. 61-68, (1990); Martin B.R., Problems associated with testing the impact absorption properties of artificial playing surfaces, Natural and Artificial Playing Fields: Characteristics and Safety Features, ASTM 1073, pp. 77-84, (1990); Shorten M., Hudson B., Himmelsbach J., Shoesurface traction of conventional and in-filled synthetic turf football surfaces, Proceedings XIX International Congress of Biomechanics, (2003); Powell J.W., Schootman M.A., Multivariate risk analysis of selected playing surfaces in the National Football League: 1980 to 1989, Am. J. Sports Medicine, 20, pp. 686-694, (1992); Powell J.W., Schootman M., A multivariate risk analysis of natural grass and Astro Turf playing surfaces in the National Football League, Int. Turfgrass Soc. Res. J., 7, pp. 201-221, (1993); Ekstrand J., Nigg B.M., Surface-related injuries in soccer, Sports Medicine, 8, 1, pp. 56-62, (1989); Baroud G., Nigg B.M., Stefanyshyn D., Energy storage and return in sport surfaces, Sports Engineering, 2, pp. 173-180, (1999); Dura J.V., Hoyos J.V., Martinez A., The effect of shock absorbing sports surfaces in jumping, Sports Engineering, 2, 2, pp. 97-102, (1999); Dura J.V., Martinez A.C., Solaz J., Testing absorbing materials: The application of viscoelastic linear model, Sports Engineering, 5, pp. 9-14, (2002); Shorten M.R., Himmelsbach J.A., Shock attenuation of sports surfaces, The Engineering of Sports, 4, pp. 152-159, (2002); McNitt A., Landschoot P.J., Petrukak D., Evaluation of the playing surfaces hardness of an infilled synthetic turf system, Proceedings of the First International Conference on Turfgrass Management and Science for Sports Fields, pp. 559-569, (2004); Walker C.A., Experimental mechanics and artificial turf, The Engineering of Sports, pp. 239-242, (1996); Villwock M.R., Meyer E.G., Powell J.W., Fouty A.J., Haut R.C., Football playing surface components may affect lower extremity injury risk, Proceedings of the North American Congress on Biomechanics, (2008); Carre M.J., Haake S.J., An examination of the Clegg impact hammer test with regard to the playing performance of synthetic sport surfaces, Sports Engineering, 7, 3, pp. 121-129, (2004); Shackelford J.F., Introduction to Materials Science for Engineers, (1998); FIFA quality concept","E. Alcántara; Instituto de Biomecánica de Valencia, Universidad Politecnica de Valencia, Camino de Vera S/n, Valencia, E-46022, Spain; email: enrique.alcantara@ibv.upv.es","","","1754338X","","","","English","Proc. Inst. Mech. Eng. Part P J. Sports Eng. Technol.","Article","Final","","Scopus","2-s2.0-70350614348" "Shultz S.J.; Schmitz R.J.; Cone J.R.; Henson R.A.; Montgomery M.M.; Pye M.L.; Tritsch A.J.","Shultz, Sandra J. (7006678357); Schmitz, Randy J. (7102530016); Cone, John R. (23388237500); Henson, Robert A. (14622483200); Montgomery, Melissa M. (36608680700); Pye, Michele L. (55510250200); Tritsch, Amanda J. (15833551400)","7006678357; 7102530016; 23388237500; 14622483200; 36608680700; 55510250200; 15833551400","Changes in fatigue, multiplanar knee laxity, and landing biomechanics during intermittent exercise","2015","Journal of Athletic Training","50","5","","486","497","11","26","10.4085/1062-6050-49.5.08","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84933044267&doi=10.4085%2f1062-6050-49.5.08&partnerID=40&md5=f8e05e6ad3b16463627aa37df6ebc056","Applied Neuromechanics Research Laboratory, Department of Kinesiology, University of North Carolina at Greensboro, 1408 Walker Avenue, Greensboro, 27402, NC, United States; Athletes' Research Institute Inc., Chapel Hill, NC, United States; School of Education, University of North Carolina at Greensboro, Greensboro, NC, United States; Department of Kinesiology, California State University, Northridge, CA, United States; Department of Orthopaedics and Sports Medicine, University of Florida, Tampa, FL, United States; Department of Kinesiology, University of Toledo, Toledo, OH, United States","Shultz S.J., Applied Neuromechanics Research Laboratory, Department of Kinesiology, University of North Carolina at Greensboro, 1408 Walker Avenue, Greensboro, 27402, NC, United States; Schmitz R.J., Applied Neuromechanics Research Laboratory, Department of Kinesiology, University of North Carolina at Greensboro, 1408 Walker Avenue, Greensboro, 27402, NC, United States; Cone J.R., Athletes' Research Institute Inc., Chapel Hill, NC, United States; Henson R.A., School of Education, University of North Carolina at Greensboro, Greensboro, NC, United States; Montgomery M.M., Department of Kinesiology, California State University, Northridge, CA, United States; Pye M.L., Applied Neuromechanics Research Laboratory, Department of Kinesiology, University of North Carolina at Greensboro, 1408 Walker Avenue, Greensboro, 27402, NC, United States, Department of Kinesiology, University of Toledo, Toledo, OH, United States; Tritsch A.J., Department of Orthopaedics and Sports Medicine, University of Florida, Tampa, FL, United States","Context: Knee laxity increases during exercise. However, no one, to our knowledge, has examined whether these increases contribute to higher-risk landing biomechanics during prolonged, fatiguing exercise. Objectives: To examine associations between changes in fatigue (measured as sprint time [SPTIME]), multiplanar knee laxity (anterior-posterior [APLAX], varus-valgus [VVLAX] knee laxity, and internal-external rotation [IERLAX]) knee laxity and landing biomechanics during prolonged, intermittent exercise. Design: Descriptive laboratory study. Setting: Laboratory and gymnasium. Patients or Other Participants: A total of 30 male (age = 20.3 ± 2.0 years, height = 1.79 ± 0.05 m, mass = 75.2 ± 7.2 kg) and 29 female (age = 20.5 ± 2.3 years, height = 1.67 ± 0.08 m, mass = 61.8 ± 9.0 kg) competitive athletes. Intervention(s): A 90-minute intermittent exercise protocol (IEP) designed to simulate the physiologic and biomechanical demands of a soccer match. Main Outcome Measure(s): We measured SPTIME, APLAX, and landing biomechanics before and after warm-up, every 15 minutes during the IEP, and every 15 minutes for 1 hour after the IEP. We measured VVLAX and IERLAX before and after the warm-up, at 45 and 90 minutes during the IEP, and at 30 minutes after the IEP. We used hierarchical linear modeling to examine associations between exercise-related changes in SPTIME and knee laxity with exercise-related changes in landing biomechanics while controlling for initial (before warm-up) knee laxity. Results: We found that SPTIME had a more global effect on landing biomechanics in women than in men, resulting in a more upright landing and a reduction in landing forces and out-of-plane motions about the knee. As APLAX increased with exercise, women increased their knee internal-rotation motion (P = .02), and men increased their hip-flexion motion and energy-absorption (P = .006) and knee-extensor loads (P = .04). As VVLAX and IERLAX increased, women went through greater knee-valgus motion and dorsiflexion and absorbed more energy at the knee (P ≤ .05), whereas men were positioned in greater hip external and knee internal rotation and knee valgus throughout the landing (P = .03). The observed fatigue- and laxity-related changes in landing biomechanics during exercise often depended on initial knee laxity. Conclusions: Both exercise-related changes in fatigue and knee laxity were associated with higher-risk landing biomechanics during prolonged exercise. These relationships were more pronounced in participants with greater initial knee laxity. © by the National Athletic Trainers' Association, Inc.","Anterior cruciate ligament injuries; Joints; Risk factors; Soccer","Anterior Cruciate Ligament; Biomechanical Phenomena; Exercise; Female; Humans; Joint Instability; Knee Joint; Male; Muscle Fatigue; Range of Motion, Articular; Rotation; Soccer; Time Factors; Young Adult; anterior cruciate ligament; biomechanics; exercise; female; human; joint characteristics and functions; joint instability; knee; male; muscle fatigue; pathophysiology; physiology; rotation; soccer; time factor; young adult","Branch T.P., Browne J.E., Campbell J.D., Et al., Rotational laxity greater in patients with contralateral anterior cruciate ligament injury than healthy volunteers, Knee Surg Sports Traumatol Arthrosc, 18, 10, pp. 1379-1384, (2010); Scerpella T.A., Stayer T.J., Makhuli B.Z., Ligamentous laxity and non-contact anterior cruciate ligament tears: A gender based comparison, Orthopaedics, 28, 7, pp. 656-660, (2005); Woodford-Rogers B., Cyphert L., Denegar C.R., Risk factors for anterior cruciate ligament injury in high school and college athletes, J Athl Train, 29, 4, pp. 343-346, (1994); Ramesh R., VonArx O., Azzopardi T., Schranz P.J., The risk of anterior cruciate ligament rupture with generalised joint laxity, J Bone Joint Surg Br, 87, 6, pp. 800-803, (2005); Myer G.D., Ford K.R., Paterno M.V., Nick T.G., Hewett T.E., The effects of generalized joint laxity on risk of anterior cruciate ligament injury in young female athletes, Am J Sports Med, 36, 6, pp. 1073-1080, (2008); Uhorchak J.M., Scoville C.R., Williams G.N., Arciero R.A., St Pierre P., Taylor D.C., Risk factors associated with non-contact injury of the anterior cruciate ligament, Am J Sports Med, 31, 6, pp. 831-842, (2003); Shultz S.J., Shimokochi Y., Nguyen A.D., Et al., Non-weight bearing anterior knee laxity is related to anterior tibial translation during transition from non-weight bearing to weight bearing, J Orthop Res, 24, 3, pp. 516-523, (2006); Shultz S.J., Schmitz R.J., Nguyen A.D., Et al., Knee laxity and its cyclic variations influence tibiofemoral joint motion during weight acceptance, Med Sci Sports Exerc, 43, 2, pp. 287-295, (2011); Shultz S.J., Schmitz R.J., Nguyen A.D., Levine B.J., Joint laxity is related to lower extremity energetics during a drop jump landing, Med Sci Sports Exerc, 42, 4, pp. 771-780, (2010); Shultz S.J., Schmitz R.J., Effects of transverse and frontal plane knee laxity on hip and knee neuromechanics during drop landings, Am J Sports Med, 37, 9, pp. 1821-1830, (2009); Withrow T.J., Huston L.J., Wojtys E.M., Ashton-Miller J.A., The effect of an impulsive knee valgus moment on in vitro relative ACL strain during a simulated jump landing, Clin Biomech (Bristol, Avon), 21, 9, pp. 977-983, (2006); Nawata K., Teshima R., Morio Y., Hagino H., Enokida M., Yamamoto K., Anterior-posterior knee laxity increased by exercise: Quantitative evaluation of physiological changes, Acta Orthop Scand, 70, 3, pp. 261-264, (1999); Steiner M.E., Grana W.A., Chillag K., Schelberg-Karnes E., The effect of exercise on anterior-posterior knee laxity, Am J Sports Med, 14, 1, pp. 24-29, (1986); Stoller D.W., Markolf K.L., Zager S.A., Shoemaker S.C., The effects of exercise, ice, and ultrasonography on torsional laxity of the knee, Clin Orthop Relat Res, 174, pp. 172-180, (1983); Shultz S.J., Schmitz R.J., Cone J.R., Et al., Multiplanar knee laxity increases during a 90-min intermittent exercise protocol, Med Sci Sports Exerc, 45, 8, pp. 1553-1561, (2013); Hawkins R.D., Hulse M.A., Wilkinson C., Hodson A., Gibson M., The association football medical research programme: An audit of injuries in professional football, Br J Sports Med, 35, 1, pp. 43-47, (2001); Shultz S.J., Schmitz R.J., Kong Y., Et al., Cyclic variations in multiplanar knee laxity influence landing biomechanics, Med Sci Sports Exerc, 44, 5, pp. 900-909, (2012); Park S.K., Stefanyshyn D.J., Ramage B., Hart D.A., Ronsky J.L., Alterations in knee joint laxity during the menstrual cycle in healthy women leads to increases in joint loads during selected athletic movements, Am J Sports Med, 37, 6, pp. 1169-1177, (2009); Johannsen H.V., Lind T., Jakobsen B.W., Kroner K., Exercise-induced knee joint laxity in distance runners, Br J Sports Med, 23, 3, pp. 165-168, (1989); Borotikar B.S., Newcomer R., Koppes R., McLean S.G., Combined effects of fatigue and decision making on female lower limb landing postures: Central and peripheral contributions to ACL injury risk, Clin Biomech (Bristol, Avon), 23, 1, pp. 81-92, (2008); Chappell J.D., Herman D.C., Knight B.S., Kirkendall D.T., Garrett W.E., Yu B., Effect of fatigue on knee kinetics and kinematics in stop-jump tasks, Am J Sports Med, 33, 7, pp. 1022-1029, (2005); McLean S.G., Fellin R., Suedekum N., Calabrese G., Passerallo A., Joy S., Impact of fatigue on gender-based high-risk landing strategies, Med Sci Sports Exerc, 39, 3, pp. 502-514, (2007); Marx R.G., Stump T.J., Jones E.C., Wickiewiecz T.L., Warren R.F., Development and evaluation of an activity rating scale for disorders of the knee, Am J Sports Med, 29, 2, pp. 213-218, (2001); Cone J.R., Berry N.T., Goldfarb A.H., Et al., Effects of an individualized soccer match simulation on vertical stiffness and impedance, J Strength Cond Res, 26, 8, pp. 2027-2036, (2012); Schmitz R.J., Shultz S.J., Cone J.R., Et al., Changes in drop jump landing biomechanics during prolonged intermittent exercise, Sports Health, 6, 2, pp. 128-135, (2014); Gabbett T.J., Kelly J.N., Sheppard J.M., Speed, change of direction speed, and reactive agility of rugby league players, J Strength Cond Res, 22, 1, pp. 174-181, (2008); Draper J.A., Lancaster M.G., The 505 test: A test for agility in the horizontal plane, Aust J Sci Med Sport, 17, 1, pp. 15-18, (1985); Kernozek T.W., Torry M.R., Iwasaki M., Gender differences in lower extremity landing mechanics caused by neuromuscular fatigue, Am J Sports Med, 36, 3, pp. 554-565, (2008); Bangsbo J., Iaia F.M., Krustrup P., The Yo-Yo intermittent recovery test: A useful tool for evaluation of physical performance in intermittent sports, Sports Med, 38, 1, pp. 37-51, (2008); Cortes N., Quammen D., Lucci S., Greska E., Onate J.A., A functional agility short-term fatigue protocol changes lower extremity mechanics, J Sport Sci, 30, 8, pp. 797-805, (2012); Shultz S.J., Dudley W.N., Kong Y., Identifying knee laxity profiles and associated physical characteristics, J Athl Train, 47, 2, pp. 159-169, (2012); Horita T., Komi P.V., Nicol C., Kyrolainen H., Interaction between pre-landing activities and stiffness regulation of the knee joint musculoskeletal system in the drop jump: Implications to performance, Eur J Appl Physiol, 88, 1-2, pp. 76-84, (2002); Butler D.L., Noyes F.R., Grood E.S., Ligamentous restraints to anterior-posterior drawer in the human knee, J Bone Joint Surg Am, 62, 2, pp. 259-270, (1980); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, 6, pp. 930-935, (1995); Torzilli P.A., Deng X., Warren R.F., The effect of joint-compressive load and quadriceps muscle force on knee motion in the intact and anterior cruciate ligament-sectioned knee, Am J Sports Med, 22, 1, pp. 105-112, (1994); Hashemi J., Chandrashekar N., Gill B., Et al., The geometry of the tibial plateau and its influence on the biomechanics of the tibiofemoral joint, J Bone Joint Surg Am, 90, 12, pp. 2724-2734, (2008); Kanamori A., Woo S.L., Ma C.B., Et al., The forces in the anterior cruciate ligament and knee kinematics during a simulated pivot shift test: A human cadaveric study using robotic technology, Arthroscopy, 16, 6, pp. 633-639, (2000); Devita P., Skelly W.A., Effect of landing stiffness on joint kinetics and energetics in the lower extremity, Med Sci Sports Exerc, 24, 1, pp. 108-115, (1992); Schmitz R.J., Kim H., Shultz S.J., Effect of axial load on anterior tibial translation when transitioning from non-weight bearing to weight bearing, Clin Biomech (Bristol, Avon), 25, 1, pp. 77-82, (2010); Shultz S.J., Pye M.L., Montgomery M.M., Schmitz R.J., Associations between lower extremity muscle mass and multi-planar knee laxity and stiffness: A potential explanation for sex differences in frontal and transverse plane knee laxity, Am J Sports Med, 40, 12, pp. 2836-2844, (2012)","S.J. Shultz; Applied Neuromechanics Research Laboratory, Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, 1408 Walker Avenue, 27402, United States; email: sjshultz@uncg.edu","","National Athletic Trainers' Association Inc.","10626050","","JATTE","25674926","English","J. Athl. Train.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-84933044267" "Gil S.; Loturco I.; Tricoli V.; Ugrinowitsch C.; Kobal R.; Cal Abad C.C.; Roschel H.","Gil, Saulo (56118304700); Loturco, Irineu (38661433700); Tricoli, Valmor (8600294500); Ugrinowitsch, Carlos (6507689741); Kobal, Ronaldo (55308038800); Cal Abad, Cesar Cavinato (36068918300); Roschel, Hamilton (6505559523)","56118304700; 38661433700; 8600294500; 6507689741; 55308038800; 36068918300; 6505559523","Tensiomyography parameters and jumping and sprinting performance in Brazilian elite soccer players","2015","Sports Biomechanics","14","3","","340","350","10","36","10.1080/14763141.2015.1062128","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946476557&doi=10.1080%2f14763141.2015.1062128&partnerID=40&md5=875d9eee959b1a3312f4af1ada002a04","School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil; NAR, Nucleus of High Performance in Sport, São Paulo, Brazil","Gil S., School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil, NAR, Nucleus of High Performance in Sport, São Paulo, Brazil; Loturco I., NAR, Nucleus of High Performance in Sport, São Paulo, Brazil; Tricoli V., School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil; Ugrinowitsch C., School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil; Kobal R., NAR, Nucleus of High Performance in Sport, São Paulo, Brazil; Cal Abad C.C., NAR, Nucleus of High Performance in Sport, São Paulo, Brazil; Roschel H., School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil","Tensiomyography has been suggested as an indirect marker of muscle stiffness, which is associated with strength/power performance. Therefore, it is reasonable to suggest that tensiomyography parameters could be associated with power-related motor tasks. The purpose of this study was to investigate the association between tensiomyography parameters (from rectus and biceps femoris) and jumping and sprinting abilities in elite soccer players. In addition, we used tensiomyography parameters to compare the lateral symmetry between dominant and non-dominant legs. Twenty elite soccer players (age: 23.3 ± 4.8 years; height: 183.5 ± 6.6 cm; weight: 77.8 ± 7.5 kg) volunteered to participate in the study. Significant moderate negative correlations between biceps femoris displacement and contact time (r = –0.5, p = 0.03), rectus femoris displacement and contact time (r = –0.51, p = 0.02), and a significant moderate correlation between biceps femoris displacement and reactive strength index (r = 0.5, p = 0.03) were found. There were no correlations between tensiomyography parameters and power-related motor tasks. In addition, no differences in tensiomyography parameters between dominant and non-dominant legs were found. Our data suggest that tensiomyography parameters are not associated with power-related motor tasks performance in elite soccer players. © 2015 Taylor & Francis.","football; lateral symmetry; muscle mechanics; muscle stiffness; sports performance; TMG","Adult; Athletic Performance; Biomechanical Phenomena; Brazil; Humans; Male; Motor Skills; Muscle Strength; Myography; Plyometric Exercise; Running; Soccer; Young Adult; adult; athletic performance; biomechanics; Brazil; human; male; motor performance; muscle strength; myography; physiology; plyometrics; procedures; running; soccer; young adult","Alentorn-Geli E., Alvarez-Diaz P., Ramon S., Marin M., Steinbacher G., Boffa J.J., Cugat R., Assessment of neuromuscular risk factors for anterior cruciate ligament injury through tensiomyography in male soccer players, Knee Surgery, Sports Traumatology, Arthroscopy, (2014); Alvarez-Diaz P., Alentorn-Geli E., Ramon S., Marin M., Steinbacher G., Boffa J.J., Cugat R., Effects of anterior cruciate ligament injury on neuromuscular tensiomyographic characteristics of the lower extremity in competitive male soccer players, Knee Surgery, Sports Traumatology, Arthroscopy, (2014); Alvarez-Diaz P., Alentorn-Geli E., Ramon S., Marin M., Steinbacher G., Rius M., Cugat R., Comparison of tensiomyographic neuromuscular characteristics between muscles of the dominant and non-dominant lower extremity in male soccer players, Knee Surgery, Sports Traumatology, Arthroscopy, (2014); Anderson F.C., Pandy M.G., Storage and utilization of elastic strain energy during jumping, Journal of Biomechanics, 26, 12, pp. 1413-1427, (1993); Bosco C., Luhtanen P., Komi P.V., A simple method for measurement of mechanical power in jumping, European Journal of Applied Physiology and Occupational Physiology, 50, 2, pp. 273-282, (1983); Bret C., Rahmani A., Dufour A.B., Messonnier L., Lacour J.R., Leg strength and stiffness as ability factors in 100 m sprint running, The Journal of Sports Medicine and Physical Fitness, 42, 3, pp. 274-281, (2002); Brughelli M., Cronin J., A review of research on the mechanical stiffness in running and jumping: Methodology and implications, Scandinavian Journal of Medicine & Science in Sports, 18, 4, pp. 417-426, (2008); Dahmane R., DjordjeviC S., SimuniC B., ValenCiC V., Spatial fiber type distribution in normal human muscle, Journal of Biomechanics, 38, 12, pp. 2451-2459, (2005); Evetovich T.K., Housh T.J., Stout J.R., Johnson G.O., Smith D.B., Ebersole K.T., Mechanomyographic responses to concentric isokinetic muscle contractions, European Journal of Applied Physiology and Occupational Physiology, 75, 2, pp. 166-169, (1997); Garcia-Manso J.M., Rodriguez-Matoso D., Rodriguez-Ruiz D., Sarmiento S., de Saa Y., Calderon J., Effect of cold-water immersion on skeletal muscle contractile properties in soccer players, American Journal of Physical Medicine & Rehabilitation, 90, 5, pp. 356-363, (2011); Garcia-Manso J.M., Rodriguez-Matoso D., Sarmiento S., de Saa Y., Vaamonde D., Rodriguez-Ruiz D., Da Silva-Grigoletto M.E., Effect of high-load and high-volume resistance exercise on the tensiomyographic twitch response of biceps brachii, Journal of Electromyography and Kinesiology, 22, 4, pp. 612-619, (2012); Garcia-Manso J.M., Rodriguez-Ruiz D., Rodriguez-Matoso D., de Saa Y., Sarmiento S., Quiroga M., Assessment of muscle fatigue after an ultra-endurance triathlon using tensiomyography (TMG), Journal of Sports Sciences, 29, 6, pp. 619-625, (2011); Hof A.L., Van Zandwijk J.P., Bobbert M.F., Mechanics of human triceps surae muscle in walking, running and jumping, Acta Physioligica Scandinavica, 174, 1, pp. 17-30, (2002); Hunter A.M., Galloway S.D., Smith I.J., Tallent J., Ditroilo M., Fairweather M.M., Howatson G., Assessment of eccentric exercise-induced muscle damage of the elbow flexors by tensiomyography, Journal of Electromyography and Kinesiology, 22, 3, pp. 334-341, (2012); Jacobs R., Bobbert M.F., Van Ingen Schenau G.J., Function of mono- and biarticular muscles in running, Medicine and Science in Sports and Exercise, 25, 10, pp. 1163-1173, (1993); Jonhagen S., Ericson M.O., Nemeth G., Eriksson E., Amplitude and timing of electromyographic activity during sprinting, Scandinavian Journal of Medicine & Science in Sports, 6, 1, pp. 15-21, (1996); Krizaj D., SimuniC B., Zagar T., Short-term repeatability of parameters extracted from radial displacement of muscle belly, Journal of Electromyography and Kinesiology, 18, 4, pp. 645-651, (2008); McMahon T.A., Cheng G.C., The mechanics of running: How does stiffness couple with speed?, Journal of Biomechanics, 23, pp. 65-78, (1990); Padulo J., Tiloca A., Powell D., Granatelli G., Bianco A., Paoli A., EMG amplitude of the biceps femoris during jumping compared to landing movements, Springerplus, 2, 1, (2013); Peng H.T., Kernozek T.W., Song C.Y., Quadricep and hamstring activation during drop jumps with changes in drop height, Physical Therapy in Sport, 12, 3, pp. 127-132, (2011); Pisot R., Narici M.V., SimuniC B., De Boer M., Seynnes O., Jurdana M., Mekjavic I.B., Whole muscle contractile parameters and thickness loss during 35-day bed rest, European Journal of Applied Physiology, 104, 2, pp. 409-414, (2008); Rahnama N., Lees A., Bambaecichi E., A comparison of muscle strength and flexibility between the preferred and non-preferred leg in english soccer players, Ergonomics, 48, 11-14, pp. 1568-1575, (2005); Rey E., Lago-penas C., Lago-Ballesteros J., Tensiomyography of selected lower-limb muscles in professional soccer players, Journal of Electromyography and Kinesiology, 22, 6, pp. 866-872, (2012); Rey E., Lago-Penas C., Lago-Ballesteros J., Casais L., The effect of recovery strategies on contractile properties using tensiomyography and perceived muscle soreness in professional soccer players, Journal of Strength and Conditioning Research, 26, pp. 3081-3088, (2011); Rodriguez-ruiz D., Rodriguez-matoso D., Quiroga M., Sarmiento S., Garcia-manso J.M., Da silva-grigoletto M.E., Study of mechanical characteristics of the knee extensor and flexor musculature of volleyball players, European Journal of Sport Science, 12, 5, pp. 399-407, (2012); SimuniC B., Degens H., Rittweger J., Narici M., Mekjavic I.B., Pisot R., Noninvasive estimation of myosin heavy chain composition in human skeletal muscle, Medicine and Science in Sports and Exercise, 43, 9, pp. 1619-1625, (2011); Taube W., Leukel C., Gollhofer A., How neurons make us jump, Exercise and Sport Sciences Reviews, 40, 2, pp. 106-115, (2012); Tous-Fajardo J., Moras G., Rodriguez-jimenez S., Usach R., Doutres D.M., Maffiuletti N.A., Inter-rater reliability of muscle contractile property measurements using non-invasive tensiomyography, Journal of Electromyography and Kinesiology, 20, 4, pp. 761-766, (2010); Ugrinowitsch C., Tricoli V., Rodacki A.L., Batista M., Ricard M.D., Influence of training background on jumping height, Journal of Strength and Conditioning Research, 21, 3, pp. 848-852, (2007); ValenCiC V., Knez N., Measuring of skeletal muscles' dynamic properties, Artificial Organs, 21, 3, pp. 240-242, (1997); Van Soest A.J., Bobbert M.F., Van Ingen Schenau G.J., A control strategy for the execution of explosive movements from varying starting positions, Journal of Neurophysiology, 71, 4, pp. 1390-1402, (1994); Watsford M., Ditroilo M., Fernandez-pena E., D'Amen G., Lucertini F., Muscle stiffness and rate of torque development during sprint cycling, Medicine and Science in Sports and Exercise, 42, 7, pp. 1324-1332, (2010); Zagar T., Krizaj D., Validation of an accelerometer for determination of muscle belly radial displacement, Medical & Biological Engineering & Computing, 43, 1, pp. 78-84, (2005)","H. Roschel; School of Physical Education and Sport, University of São Paulo, Butantã, SP, Av. Prof. Mello de Moraes, 65, 05508-030, Brazil; email: hars@usp.br","","Routledge","14763141","","","26271313","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-84946476557" "Watanabe H.; Fujii M.; Yoshimoto M.; Abe H.; Toda N.; Higashiyama R.; Takahira N.","Watanabe, Hiroyuki (55738357900); Fujii, Meguru (55245709900); Yoshimoto, Masumi (55848969600); Abe, Hiroshi (55849786800); Toda, Naruaki (57203917442); Higashiyama, Reiji (34971122700); Takahira, Naonobu (6602323220)","55738357900; 55245709900; 55848969600; 55849786800; 57203917442; 34971122700; 6602323220","Pathogenic Factors Associated With Osgood-Schlatter Disease in Adolescent Male Soccer Players: A Prospective Cohort Study","2018","Orthopaedic Journal of Sports Medicine","6","8","","","","","38","10.1177/2325967118792192","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053528475&doi=10.1177%2f2325967118792192&partnerID=40&md5=a3bb59e5ec2cd52fa2987dbac6a81dc8","Department of Rehabilitation, School of Allied Health Sciences, Kitasato University, Sagamihara, Japan; Nishifuna Clinic, Funabashi Orthopedic Hospital, Funabashi, Japan; Department of Physical Therapy, Faculty of Health and Medical Science, Teikyo Heisei University, Tokyo, Japan; Department of Rehabilitation, Kitasato Institute Hospital, Kitasato University, Tokyo, Japan; Department of Orthopedic Surgery, School of Medicine, Kitasato University, Sagamihara, Japan","Watanabe H., Department of Rehabilitation, School of Allied Health Sciences, Kitasato University, Sagamihara, Japan; Fujii M., Nishifuna Clinic, Funabashi Orthopedic Hospital, Funabashi, Japan; Yoshimoto M., Department of Physical Therapy, Faculty of Health and Medical Science, Teikyo Heisei University, Tokyo, Japan; Abe H., Department of Rehabilitation, Kitasato Institute Hospital, Kitasato University, Tokyo, Japan; Toda N., Department of Rehabilitation, Kitasato Institute Hospital, Kitasato University, Tokyo, Japan; Higashiyama R., Department of Orthopedic Surgery, School of Medicine, Kitasato University, Sagamihara, Japan; Takahira N., Department of Rehabilitation, School of Allied Health Sciences, Kitasato University, Sagamihara, Japan","Background: A previous cross-sectional study reported that pathogenic factors associated with Osgood-Schlatter disease (OSD) in adolescent athletes include increased quadriceps muscle tightness, lower leg malalignment, and development of apophysitis in the tibial tuberosity. Purpose: To confirm these pathogenic factors associated with OSD in a longitudinal study with regard to physical function and performance. Study Design: Cohort study; Level of evidence, 2. Methods: In this study, 37 boys (mean age, 10.2 ± 0.4 years) were recruited from 2 soccer teams at an elementary school. This cohort study was conducted over an observation period of 1 year, with measurements recorded at baseline, followed by screening for OSD every 6 months. Variables evaluated at baseline included physical function (morphometry, joint flexibility, and lower extremity alignment), presence of Sever disease, and kicking motion. Results: Pathogenic factors associated with OSD in the support leg of adolescent male soccer players included height, weight, body mass index, quadriceps femoris muscle tightness in the kicking and support legs, and gastrocnemius muscle tightness, soleus muscle tightness, and medial longitudinal arch in the support leg. Additional factors included a diagnosis of Sever disease and distance from the lateral malleolus of the support leg’s fibula to the center of gravity during kicking. Conclusion: The onset of OSD was found to be affected by many factors, including developmental stage, physical attributes, and pre-existing apophysitis. In particular, a diagnosis of Sever disease and backward shifting of the center of gravity during kicking increased the risk of the subsequent onset of OSD, suggesting that these factors are very important as a possible focus for interventions. © The Author(s) 2018.","growth; knee; pediatric; prevention; ultrasonography","Article; biomechanics; body height; body mass; body weight; child; clinical article; cohort analysis; computer assisted tomography; controlled study; echography; human; intrarater reliability; joint laxity; joint mobility; joint radiography; longitudinal study; male; metatarsophalangeal joint; muscle tightness; musculoskeletal system inflammation; nuclear magnetic resonance imaging; osgood schlatter disease; priority journal; questionnaire; school child; sever disease; soccer player; three dimensional imaging; tibial tuberosity","Atanda A., Shah S.A., O'Brien K., Osteochondrosis: common causes of pain in growing bones, Am Fam Physician, 83, 3, pp. 285-291, (2011); Beighton P., Solomon L., Soskolne C.L., Articular mobility in an African population, Ann Rheum Dis, 32, 5, pp. 413-418, (1973); Blackburn J.T., Padua D.A., Sagittal-plane trunk position, landing forces, and quadriceps electromyographic activity, J Athl Train, 44, 2, pp. 174-179, (2009); Blankstein A., Cohen I., Heim M., Diamant L., Salai M., Chechick A., Ultrasonography as a diagnostic modality in Osgood-Schlatter disease, Arch Orthop Trauma Surg, 121, 9, pp. 536-539, (2001); Cohen J., A power primer, Psychol Bull, 112, 1, pp. 155-159, (1992); Czyrny Z., Osgood-Schlatter disease in ultrasound diagnostics: a pictorial essay, Med Ultrason, 12, 4, pp. 323-335, (2010); de Lucena G.L., dos Santos Gomes C., Guerra R.O., Prevalence and associated factors of Osgood-Schlatter syndrome in a population-based sample of Brazilian adolescents, Am J Sports Med, 39, 2, pp. 415-420, (2011); Ducher G., Cook J., Lammers G., Et al., The ultrasound appearance of the patellar tendon attachment to the tibia in young athletes is conditional on gender and pubertal stage, J Sci Med Sport, 13, 1, pp. 20-23, (2010); Ehrenborg G., Lagergren C., Roentgenologic changes in the Osgood-Schlatter lesion, Acta Chir Scand, 121, pp. 315-327, (1961); El Rassi G., Takemitsu M., Woratanarat P., Shah S.A., Lumbar spondylolysis in pediatric and adolescent soccer players, Am J Sports Med, 33, 11, pp. 1688-1693, (2005); Flaviis L.D., Nessi R., Scaglione P., Et al., Skeletal radiology and Sinding-Larsen-Johansson diseases of the knee, Skeletal Radiol, 18, 3, pp. 193-197, (1989); Fujitaka K., Taniguchi A., Isomoto S., Et al., Pathogenesis of fifth metatarsal fractures in college soccer players, Orthop J Sports Med, 3, 9, (2015); Gholve P.A., Scher D.M., Khakharia S., Widmann R.F., Green D.W., Osgood Schlatter syndrome, Curr Opin Pediatr, 19, 1, pp. 44-50, (2007); Gigante A., Bevilacqua C., Bonetti M.G., Greco F., Increased external tibial torsion in Osgood-Schlatter disease, Acta Orthop Scand, 74, 4, pp. 431-436, (2003); Grivas T.B., Mihas C., Arapaki A., Vasiliadis E., Correlation of foot length with height and weight in school age children, J Forensic Leg Med, 15, 2, pp. 89-95, (2008); Hendrix C.L., Calcaneal apophysitis (Sever disease), Clin Podiatr Med Surg, 22, 1, pp. 55-62, (2005); Hosgoren B., Koktener A., Dilmen G., Ultrasonography of the calcaneus in Sever’s disease, Indian Pediatr, 42, 8, pp. 801-803, (2005); Kaya D.O., Toprak U., Baltaci G., Yosmaoglu B., Ozer H., Long-term functional and sonographic outcomes in Osgood-Schlatter disease, Knee Surg Sports Traumatol Arthrosc, 21, 5, pp. 1131-1139, (2013); Kerssemakers S.P., Fotiadou A.N., De Jonge M.C., Karantanas A.H., Maas M., Sport injuries in the paediatric and adolescent patient: a growing problem, Pediatr Radiol, 39, 5, pp. 471-484, (2009); Kujala U.M., Kvist M., Heinonen O., Osgood-Schlatter’s disease in adolescent athletes: retrospective study of incidence and duration, Am J Sports Med, 13, 4, pp. 236-241, (1985); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: a review, J Sports Sci, 28, 8, pp. 805-817, (2010); Maher P.J., Ilgen J.S., Osgood-Schlatter disease, BMJ Case Rep, 2013, (2013); Nakase J., Goshima K., Numata H., Oshima T., Takata Y., Tsuchiya H., Precise risk factors for Osgood-Schlatter disease, Arch Orthop Trauma Surg, 135, 9, pp. 1277-1281, (2015); Perhamre S., Lundin F., Norlin R., Klassbo M., Sever’s injury: treat it with a heel cup. A randomized, crossover study with two insole alternatives, Scand J Med Sci Sports, 21, 6, pp. e42-e47, (2011); Rachel J.N., Williams J.B., Sawyer J.R., Warner W.C., Kelly D.M., Is radiographic evaluation necessary in children with a clinical diagnosis of calcaneal apophysitis (Sever disease)?, J Pediatr Orthop, 31, 5, pp. 548-550, (2011); Rauch F., Bailey D.A., Baxter-Jones A., Mirwald R., Faulkner R., The “muscle-bone unit” during the pubertal growth spurt, Bone, 34, 5, pp. 771-775, (2004); Rossler R., Junge A., Chomiak J., Dvorak J., Faude O., Soccer injuries in players aged 7 to 12 years, Am J Sports Med, 44, 2, pp. 309-317, (2016); Roth S., Roth A., Jotanovic Z., Madarevic T., Navicular index for differentiation of flatfoot from normal foot, Int Orthop, 37, 6, pp. 1107-1112, (2013); Saltzman C.L., Nawoczenski D.A., Talbot K.D., Measurement of the medial longitudinal arch, Arch Phys Med Rehabil, 76, 1, pp. 45-49, (1995); Sarcevic Z., Limited ankle dorsiflexion: a predisposing factor to Morbus Osgood Schlatter?, Knee Surg Sports Traumatol Arthrosc, 16, 8, pp. 726-728, (2008); Suzue N., Matsuura T., Iwame T., Et al., State-of-the-art ultrasonographic findings in lower extremity sports injuries, J Med Invest, 62, 3-4, pp. 109-113, (2015); Tojima M., Noma K., Torii S., Changes in serum creatine kinase, leg muscle tightness, and delayed onset muscle soreness after a full marathon race, J Sports Med Phys Fitness, 56, 6, pp. 782-788, (2016); Uden H., Scharfbillig R., Causby R., The typically developing paediatric foot: how flat should it be? A systematic review, J Foot Ankle Res, 10, 1, pp. 1-17, (2017); Weiler R., Ingram M., Wolman R., 10-minute consultation: Osgood-Schlatter disease, BMJ, 343, (2011); Willner P., Osgood-Schlatter’s disease: etiology and treatment, Clin Orthop Relat Res, 62, pp. 178-179, (1969); Yanagisawa S., Osawa T., Saito K., Et al., Assessment of Osgood-Schlatter disease and the skeletal maturation of the distal attachment of the patellar tendon in preadolescent males, Orthop J Sports Med, 2, 7, (2014); Yokoi T., Shibukawa K., Ae M., Body segment parameters of Japanese children, Jap J Phys Educ, 31, 1, pp. 53-66, (1986)","H. Watanabe; Department of Rehabilitation, School of Allied Health Sciences, Kitasato University, Sagamihara, 1-15-1 Kitasato, 252-0373, Japan; email: hw@ahs.kitasato-u.ac.jp","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85053528475" "McGhie D.; Ettema G.","McGhie, David (37665498900); Ettema, Gertjan (55928778800)","37665498900; 55928778800","Biomechanical analysis of surface-athlete impacts on third-generation artificial turf","2013","American Journal of Sports Medicine","41","1","","177","185","8","27","10.1177/0363546512464697","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879313314&doi=10.1177%2f0363546512464697&partnerID=40&md5=ed9440e38e46005048ddf32dbe7bfd4a","Department of Human Movement Science, Norwegian University of Science and Technology, N-7491 Trondheim, Norway; Centre for Sport Facilities and Technology, Department of Civil and Transport Engineering, Norwegian University of Science and Technology, Trondheim, Norway","McGhie D., Department of Human Movement Science, Norwegian University of Science and Technology, N-7491 Trondheim, Norway, Centre for Sport Facilities and Technology, Department of Civil and Transport Engineering, Norwegian University of Science and Technology, Trondheim, Norway; Ettema G., Department of Human Movement Science, Norwegian University of Science and Technology, N-7491 Trondheim, Norway","Background: Excessive repetitive loads are widely believed to be the cause of overload or overuse injuries. On third-generation artificial turf, impacts have been found to vary with surface and shoe properties. Mechanical devices are considered not representative for measuring impact absorption during athletic movements, and pressure insoles have been shown as inaccurate with regard to magnitude of force. Purpose: To compare impact properties between different third-generation artificial turf systems in combination with various cleat configurations in vivo using force plate technology. Study Design: Controlled laboratory study. Methods: Twenty-two male soccer players (mean ± SD: age, 23.1 ± 2.8 y; height, 1.81 ± 0.1 m; body mass, 77.5 ± 6.0 kg) performed 10 short sprints, 5 straight with a sudden stop and 5 with a 90° cut, over a force plate covered with artificial turf for each combination of 3 turf systems and 3 cleat configurations. Results: During stop sprints, peak impact was significantly higher on a recreational-level turf system than professional-level turf systems with and without an underlying shock pad (3.12 body weight [W] vs 3.01 W and 3.02 W, respectively). During cut sprints, peak impact was significantly higher with traditional round cleats than with turf cleats and bladed cleats (2.99 W vs 2.84 W and 2.87 W, respectively). Conclusion: The results indicate that both an increase in assumed impact-absorbing surface properties and a larger distribution of shorter cleats produced lower impacts during standardized athletic movements. Regardless, none of the shoe-surface combinations yielded peak impacts of an assumed hazardous magnitude. Clinical Relevance: The study provides information on the extent to which various third-generation artificial turf systems and cleat configurations affect impact force, widely believed to be a causative factor for overload and overuse injuries. © 2013 The Author(s).","Artificial turf; Biomechanics; Cleats; Impact; Soccer","Adult; Biomechanics; Humans; Male; Running; Shoes; Soccer; Young Adult; MLCS; MLOWN; adult; article; biomechanics; comparative study; human; male; physiology; running; shoe; soccer","Alcantara E., Gamez J., Rosa D., Sanchis M., Analysis of the influence of rubber infill morphology on the mechanical performance of artificial turf surfaces for soccer, J Sports Engng Technol., 223, pp. 1-9, (2009); Barnett S., Cunningham J.L., West S., A comparison of vertical force and temporal parameters produced by an in-shoe pressure measuring system and a force platform, Clin Biomech (Bristol, Avon), 16, 4, pp. 353-357, (2001); Bentley J.A., Ramanathan A.K., Arnold G.P., Wang W., Abboud R.J., Harmful cleats of football boots: A biomechanical evaluation, Foot Ankle Surg., 17, pp. 140-144, (2011); Cole G.K., Nigg B.M., Van Den Bogert A.J., Gerritsen K.G., Lower extremity joint loading during impact in running, Clin Biomech (Bristol, Avon), 11, 4, pp. 181-193, (1996); Derrick T.R., The effects of knee contact angle on impact forces and accelerations, Med Sci Sports Exerc., 36, 5, pp. 832-837, (2004); Dixon S.J., Stiles V.H., Impact absorption for tennis shoe-surface combinations, Sports Eng., 6, pp. 1-9, (2003); Dragoo J.L., Braun H.J., The effect of playing surface on injury rate: A review of the current literature, Sports Med., 40, 11, pp. 981-990, (2010); Eils E., Streyl M., Linnenbecker S., Thorwesten L., Volker K., Rosenbaum D., Characteristic plantar pressure distribution patterns during soccer-specific movements, Am J Sports Med., 32, 1, pp. 140-145, (2004); Fédération Internationale de Football Association. FIFA Quality Concept for Football Turf: Handbook of Requirements, (2009); Fédération Internationale de Football Association. FIFA Quality Concept for Football Turf: Handbook of Test Methods, (2009); Ferris D.P., Liang K., Farley C.T., Runners adjust leg stiffness for their first step on a new surface, J Biomech., 32, pp. 787-794, (1999); Ford K.R., Manson N.A., Evans B.J., Et al., Comparison of in-shoe foot loading patterns on natural grass and synthetic turf, J Sci Med Sport., 9, pp. 433-440, (2006); Frederick E.C., Kinematically mediated effects of sport shoe design: A review, J Sports Sci., 4, pp. 169-184, (1986); Fuller C.W., Ekstrand J., Junge A., Et al., Consensus statement on injury definitions and data collection procedures in studies of football (soccer) injuries, Scand J Med Sci Sports., 16, 2, pp. 83-92, (2006); Hamill J., Evaluating sport shoes using ground reaction force data, Proceedings of XIV International Symposium on Biomechanics in Sports, pp. 111-119, (1996); Hennig E.M., The influence of soccer shoe design on player performance and injuries, Res Sports Med., 19, pp. 186-201, (2011); Keller T.S., Weisberger A.M., Ray J.L., Hasan S.S., Shiavi R.G., Spengler D.M., Relationship between vertical ground reaction force and speed during walking, slow jogging, and running, Clin Biomech., 11, 5, pp. 253-259, (1996); McNitt A., Landschoot P.J., Petrukak D., Evaluation of the playing surface hardness of an infilled synthetic turf system, Proceedings of the First International Conference on Turfgrass Management and Science for Sports Fields, pp. 559-596, (2004); Meijer K., Dethmers J., Savelberg H.H., Willems P.J.B., Wijers B., Biomechanical analysis of running on third generation artificial soccer turf, The Engineering of Sport, 6, 1, pp. 29-34, (2006); Muller C., Sterling T., Lange J., Milani T.L., Comprehensive evaluation of player-surface interaction on artificial soccer turf, Sports Biomech., 9, 3, pp. 193-205, (2010); Naunheim R., Parrott H., Standeven J., A comparison of artificial turf, J Trauma., 57, 6, pp. 1311-1314, (2004); Nigg B.M., Wakeling J.M., Impact forces and muscle tuning: A new paradigm, Exerc Sport Sci Rev., 29, 1, pp. 37-41, (2001); Nigg B.M., Yeadon M.R., Biomechanical aspects of playing surfaces, J Sports Sci., 5, pp. 117-145, (1987); Norske Idrettsutøveres Sentralorganisasjon. NISOs arbeidslivsundersøkelser. Kunstgress 2007:84% foretrekker naturgress; Norske Idrettsutøveres Sentralorganisasjon. NISOs arbeidslivsundersøkelser. Kunstgress 2007: Flest skader på kunstgress; Pedroza A., Fernandez S., Heidt Jr. R., Kaeding C., Evaluation of the shoe-surface interaction using an agility maneuver, Med Sci Sports Exerc., 42, 9, pp. 1754-1759, (2010); Queen R.M., Charnock B.L., Garrett Jr. W.E., Hardaker W.M., Sims E.L., Moorman III C.T., A comparison of cleat types during two football-specific tasks on FieldTurf, Br J Sports Med., 42, 4, pp. 278-284, (2008); Shorten M.R., Himmelsbach J.A., Shock attenuation of sports surfaces, The Engineering of Sport, 4, 4, pp. 152-159, (2002); Smith N., Dyson R., Janaway L., Ground reaction force measures when running in soccer boots and soccer training shoes on a natural turf surface, Sports Eng., 7, pp. 159-167, (2004); Stiles V., Dixon S., Biomechanical response to systematic changes in impact interface cushioning properties while performing a tennisspecific movement, J Sports Sci., 25, 11, pp. 1229-1239, (2007); Stiles V.H., Dixon S., The influence of different playing surfaces on the biomechanics of a tennis running forehand foot plant, J Appl Biomech., 22, pp. 14-24, (2006); Wong P.L., Chamari K., Mao De W., Wisloff U., Hong Y., Higher plantar pressure on the medial side in four soccer-related movements, Br J Sports Med., 41, pp. 93-100, (2007)","D. McGhie; Department of Human Movement Science, Norwegian University of Science and Technology, N-7491 Trondheim, Norway; email: david.mcghie@svt.ntnu.no","","","15523365","","AJSMD","23149018","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-84879313314" "Baumhauer J.F.; Alosa D.M.; Renström P.A.F.H.; Trevino S.; Beynnon B.","Baumhauer, Judith F. (6701421959); Alosa, Denise M. (6508002590); Renström, Per A. F. H. (7006103028); Trevino, Saul (7006193964); Beynnon, Bruce (7006096878)","6701421959; 6508002590; 7006103028; 7006193964; 7006096878","Test-Retest Reliability of Ankle Injury Risk Factors","1995","The American Journal of Sports Medicine","23","5","","571","574","3","36","10.1177/036354659502300509","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0029028045&doi=10.1177%2f036354659502300509&partnerID=40&md5=5c04d0b10516c62fd4021cd6484b02ba","Department of Orthopaedics and Rehabilitation, McClure Musculoskeletal Research Center, University of Vermont, Burlington, United States; Sports and Orthopaedic Rehabilitation Center, Colchester, Vermont, United States; Department of Orthopedics, Baylor College of Medicine, Houston, Texas, United States","Baumhauer J.F., Department of Orthopaedics and Rehabilitation, McClure Musculoskeletal Research Center, University of Vermont, Burlington, United States; Alosa D.M., Sports and Orthopaedic Rehabilitation Center, Colchester, Vermont, United States; Renström P.A.F.H., Department of Orthopaedics and Rehabilitation, McClure Musculoskeletal Research Center, University of Vermont, Burlington, United States; Trevino S., Department of Orthopedics, Baylor College of Medicine, Houston, Texas, United States; Beynnon B., Department of Orthopaedics and Rehabilitation, McClure Musculoskeletal Research Center, University of Vermont, Burlington, United States","Ligamentous instability, ankle muscle weakness, foot ankle alignment, and generalized joint laxity may be predisposing factors for ankle ligament injuries. The purpose of this study was to examine the reliability of these risk factors before and after the season in healthy individuals and to determine if any significant differ ences developed during the athletic season (range, 12 to 16 weeks). Twenty-one healthy college-aged ath letes were tested for generalized joint laxity, anatomic alignment of the foot and ankle, ligamentous stability, and isokinetic strength of the ankle muscles. This study showed that generalized joint laxity, ankle ligamentous stability, and ankle strength measurements demon strated high correlation coefficients (r > 0.75). The high correlation coefficients suggested reliable measures. Some of the range of motion measurements had lower correlation coefficients, which suggested more variabil ity in these measurements. After establishing the reli ability in 24 of the 28 measurements with standardized methods, further work is underway to evaluate the role of these factors in inversion ankle sprains. © 1995, SAGE Publications. All rights reserved.","","Adult; Ankle Injuries; Anthropometry; Athletic Injuries; Biomechanics; Female; Hockey; Human; Isometric Contraction; Joint Instability; Ligaments, Articular; Male; Prospective Studies; Racquet Sports; Range of Motion, Articular; Reproducibility of Results; Risk Factors; Soccer; Sprains and Strains; United States; adult; ankle injury; ankle sprain; article; athlete; clinical article; correlation function; female; human; isokinetic exercise; joint instability; male; measurement; muscle weakness; priority journal; reliability; risk factor; sport injury","Balduini F.C., Vegso J.J., Torg J.S., Et al., Sports Med, 4, pp. 364-380, (1987); (1985); Baumhauer J.F., Alosa D.M., Renstrom P., Et al., Am J Sports Med, 23, pp. 564-570, (1995); Beighton P., Solomon L., Ann Rheum Dis, 3, pp. 413-418, (1973); Black H.M., Brand R.L., Am J Sports Med, 6, pp. 276-282, (1978); Brostrom L., Sprained ankles V Treatment and prognosis in recent ligament ruptures, Acta Chir Scand, 132, pp. 537-550, (1966); Brostrom L., Sprained ankles I Anatomic lesions in recent sprains, Acta Chir Scand, 128, pp. 483-495, (1964); Brostrom L., Liljedahl S.O., Acta Chir Scand, 129, pp. 485-499, (1965); Burkett L.N., Causative factors in hamstring strains, Med Sci Sports, 2, pp. 39-42, (1970); Burns C., Parallels between research and diagnosis The reliability and validity issues of clinical practice, Nurse Practitioner, 16, 10, pp. 42-50, (1991); Cahill B.R., Am J Sports Med, 7, pp. 183-185, (1979); Cahill B.R., Am J Sports Med, 6, pp. 180-184, (1978); Carter C., J Bone Joint Surg, 40B, pp. 664-667, (1958); Carter C., J Bone Joint Surg, 46B, pp. 40-45, (1964); Chrisman O.D., J Bone Joint Surg, 51A, pp. 904-912, (1969); Cox J.S., Surgical and nonsurgical treatment of acute ankle sprains, Clin Orthop, 198, pp. 118-126, (1985); Cox J.S., Clin Orthop, 140, pp. 37-41, (1979); Dahle L.K., Mueller M., Delitto A., Et al., J Orthop Sports Phys Ther, 14, pp. 70-74, (1991); Donatelli R.A., Abnormal biomechanics of the foot and ankle, J Orthop Sports Phys Ther, 9, pp. 11-16, (1987); Ekstrand J., FootAnkle, 11, pp. 41-44, (1990); Elveru R.A., Rothstein J.M., Lamb R.L., Et al., Phys Ther, 68, pp. 678-682, (1988); Evans G.A., Hardcastle P., J Bone Joint Surg, 66B, pp. 209-212, (1984); J Bone Joint Surg, 47B, pp. 661-668, (1965); Garnck J.G., The frequency of injury, mechanism of injury, and epidemiology of ankle sprains, Am J Sports Med, 5, pp. 241-242, (1977); Garnck J.G., Clin Sports Med, 7, pp. 29-36, (1988); Gerberich S.G., Eriksson D., Serfass R., Et al., Arch Phys Med Rehabil, 70, pp. 775-779, (1989); Glick J.M., Gordon R.B., Am J Sports Med, 4, pp. 136-141, (1976); Godshall R.W., The predictability of athletic injuries An eight-year study, J Sports Med, 3, 1, pp. 50-54, (1975); Hunt G.C., (1988); (1991); Jackson D.W., Injury prediction in the young athlete A preliminary report, Am J Sports Med, 6, pp. 6-14, (1978); Jackson J.P., Injury, 17, pp. 251-255, (1986); James S.L., Bates B., Am J Sports Med, 6, pp. 40-50, (1978); Karlsson J., Bergsten T., Lansinger O., Et al., J Bone Joint Surg, 70A, pp. 581-588, (1988); Karnofel H., Wilkinson K., J Orthop Sports Phys Ther, 11, pp. 150-154, (1989); Landeros O., Frost H.M., Joint Surg, 48A, (1966); Laurin C.A., Ouellet R., Can J Surg, 11, pp. 270-279, (1968); Leslie M., Zachazewski J., J Orthop Sports Phys Ther, 11, pp. 612-616, (1990); Lysens R., Steverlynck A., Sports Med, 1, pp. 6-10, (1984); Meeuwisse W.H., Can J Sports Sci, 13, pp. 35-42, (1988); Milgrom C., Shlamkovitch N., Finestone A., Et al., Foot Ankle, 12, pp. 26-30, (1991); (1976); Perlman M., Leveille D., DeLeonibus J., Et al., J Foot Surg, 26, pp. 95-135, (1987); Rasmussen O., Stability of the ankle joint Analysis of the function and traumatology of the ankle ligaments, Acta Orthop Scand, 211, pp. 1-75, (1985); Renstrom P., J German Orthop Trauma, 7, pp. 29-35, (1993); (1971); Rubin G., J Bone Joint Surg, 42A, pp. 311-326, (1960); Seligson D., Gassman J., Am J Sports Med, 8, pp. 39-42, (1980); Shambaugh J.P., Klein A., Med Sci Sports Exerc, 23, pp. 522-527, (1991); Smith-Oricchio K., J Orthop Sports Phys Ther, 12, pp. 10-15, (1990); Soboroff S.H., Pappius E.M., Clin Orthop, 183, pp. 160-168, (1984); Sonne-Holm S., BrJ Sports Med, 14, pp. 22-24, (1980); Tropp H., Pronator muscle weakness in functional instability of the ankle joint, Int J Sports Med, 7, pp. 291-294, (1986)","","","","03635465","","","8526272","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-0029028045" "Sankey S.P.; Raja Azidin R.M.F.; Robinson M.A.; Malfait B.; Deschamps K.; Verschueren S.; Staes F.; Vanrenterghem J.","Sankey, Sean P. (55874115400); Raja Azidin, Raja M. Firhad (42862343900); Robinson, Mark A. (24299659200); Malfait, Bart (55797743800); Deschamps, Kevin (26027833700); Verschueren, Sabine (6603747889); Staes, Filip (6701357780); Vanrenterghem, Jos (6506257376)","55874115400; 42862343900; 24299659200; 55797743800; 26027833700; 6603747889; 6701357780; 6506257376","How reliable are knee kinematics and kinetics during side-cutting manoeuvres?","2015","Gait and Posture","41","4","","905","911","6","29","10.1016/j.gaitpost.2015.03.014","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928586799&doi=10.1016%2fj.gaitpost.2015.03.014&partnerID=40&md5=0ff4f9304ba99c73d63751de9a19061b","Research Institute for Sport and Exercise Sciences, Faculty of Science, Liverpool John Moores University, Liverpool, United Kingdom; Engineering, Sport and Sciences, University of Bolton, Bolton, United Kingdom; KU Leuven, Musculoskeletal Rehabilitation Research Group, Department of Rehabilitation Sciences and Physiotherapy, Faculty of Kinesiology and Rehabilitation Sciences, Belgium","Sankey S.P., Research Institute for Sport and Exercise Sciences, Faculty of Science, Liverpool John Moores University, Liverpool, United Kingdom, Engineering, Sport and Sciences, University of Bolton, Bolton, United Kingdom; Raja Azidin R.M.F., Research Institute for Sport and Exercise Sciences, Faculty of Science, Liverpool John Moores University, Liverpool, United Kingdom; Robinson M.A., Research Institute for Sport and Exercise Sciences, Faculty of Science, Liverpool John Moores University, Liverpool, United Kingdom; Malfait B., KU Leuven, Musculoskeletal Rehabilitation Research Group, Department of Rehabilitation Sciences and Physiotherapy, Faculty of Kinesiology and Rehabilitation Sciences, Belgium; Deschamps K., KU Leuven, Musculoskeletal Rehabilitation Research Group, Department of Rehabilitation Sciences and Physiotherapy, Faculty of Kinesiology and Rehabilitation Sciences, Belgium; Verschueren S., KU Leuven, Musculoskeletal Rehabilitation Research Group, Department of Rehabilitation Sciences and Physiotherapy, Faculty of Kinesiology and Rehabilitation Sciences, Belgium; Staes F., KU Leuven, Musculoskeletal Rehabilitation Research Group, Department of Rehabilitation Sciences and Physiotherapy, Faculty of Kinesiology and Rehabilitation Sciences, Belgium; Vanrenterghem J., Research Institute for Sport and Exercise Sciences, Faculty of Science, Liverpool John Moores University, Liverpool, United Kingdom","Introduction: Side-cutting tasks are commonly used in dynamic assessment of ACL injury risk, but only limited information is available concerning the reliability of knee loading parameters. The aim of this study was to investigate the reliability of side-cutting data with additional focus on modelling approaches and task execution variables. Methods: Each subject (. n= 8) attended six testing sessions conducted by two observers. Kinematic and kinetic data of 45° side-cutting tasks was collected. Inter-trial, inter-session, inter-observer variability and observer/trial ratios were calculated at every time-point of normalised stance, for data derived from two modelling approaches. Variation in task execution variables was regressed against that of temporal profiles of relevant knee data using one-dimensional statistical parametric mapping. Results: Variability in knee kinematics was consistently low across the time-series waveform (≤5°), but knee kinetic variability was high (31.8, 24.1 and 16.9. Nm for sagittal, frontal and transverse planes, respectively) in the weight acceptance phase of the side-cutting task. Calculations conveyed consistently moderate-to-good measurement reliability. Inverse kinematic modelling reduced the variability in sagittal (~6. Nm) and frontal planes (~10. Nm) compared to direct kinematic modelling. Variation in task execution variables did not explain any knee data variability. Conclusion: Side-cutting data appears to be reliably measured, however high knee moment variability exhibited in all planes, particularly in the early stance phase, suggests cautious interpretation towards ACL injury mechanics. Such variability may be inherent to the dynamic nature of the side-cutting task or experimental issues not yet known. © 2015 Elsevier B.V.","ACL injury; Direct kinematics; Inverse kinematics; Sample size; Variability","Adult; Biomechanical Phenomena; Female; Humans; Knee; Male; Movement; Reproducibility of Results; Soccer; adult; Article; calculation; experimental test; female; human; kinematics; kinetics; knee; male; priority journal; reliability; side cutting task; standing; waveform; biomechanics; knee; movement (physiology); physiology; reproducibility; soccer","Hawkins R.D., Hulse M.A., Wilkinson C., Hodson A., Gibson M., The association football medical research programme: an audit of injuries in professional football, Br J Sports Med, 35, pp. 43-47, (2001); Myers C.A., Hawkins D., Alterations to movement mechanics can greatly reduce anterior cruciate ligament loading without reducing performance, J Biomech, 43, pp. 2657-2664, (2012); Besier T.F., Lloyd D.G., Ackland T.R., Cochrane J.L., Anticipatory effects on knee joint loading, Med Sci Sports Exerc, 33, pp. 1176-1181, (2001); Houck J.R., Duncan A., De Haven K.E., Comparison of frontal plane trunk kinematics and hip and knee moments during anticipated and unanticipated walking and side step cutting tasks, Gait Posture, 24, pp. 314-322, (2006); Kristianslund E., Krosshaug T., Comparison of drop jumps and sport-specific sidestep cutting: implications for anterior cruciate ligament injury risk screening, Am J Sports Med, 41, pp. 684-688, (2013); Landry S.C., McKean K.A., Hubley-Kozey C.L., Stanish W.D., Deluzio K.J., Gender differences exist in neuromuscular control patterns during the pre-contact and early stance phase of an unanticipated side-cut and cross-cut maneuver in 15-18 years old adolescent soccer players, J Electromyogr Kinesiol, 19, pp. e370-e379, (2009); McLean S.G., Huang X., van den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: implications for ACL injury, Clin Biomech, 20, pp. 863-870, (2005); Pollard C.D., Davis I.M., Hamill J., Influence of gender on hip and knee mechanics during a randomly cued cutting maneuver, Clin Biomech, 19, pp. 1022-1031, (2004); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A.M., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, pp. 930-935, (1995); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Med Sci Sports Exerc, 37, pp. 124-129, (2005); Sigward S.M., Powers C.M., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clin Biomech, 21, pp. 41-48, (2006); Sigward S.M., Powers C.M., The influence of experience on knee mechanics during side-step cutting in females, Clin Biomech, 21, pp. 740-747, (2006); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvres, Med Sci Sports Exerc, 33, pp. 1168-1175, (2001); Robinson M.A., Tsao J., Donnelly C.J., Impact of knee modelling approach on markers and classification of ACL injury risk, Med Sci Sports Exerc, 46, pp. 1269-1276, (2014); Malfait B., Sankey S.P., Raja Azidin R.M.F., Deschamps K., Vanrenterghem J., Robinson M.A., Et al., How reliable are lower limb kinematics and kinetics during a drop vertical jump?, Med Sci Sports Exerc, 46, pp. 678-685, (2014); Kristianslund E., Faul O., Bahr R., Myklebust G., Krosshaug T., Sidestep cutting technique and knee abduction loading: implications for ACL prevention exercises, Br J Sports Med, 48, pp. 779-783, (2014); Schwartz M.H., Trost J.P., Wervey R.A., Measurement and management of errors in quantitative gait data, Gait Posture, 20, pp. 196-203, (2004); Pataky T.C., One-dimensional statistical parametric mapping in Python, Comput Methods Biomech Biomed Eng, 15, pp. 295-301, (2012); Vanrenterghem J., Venables E., Pataky T., Robinson M.A., The effect of running speed on knee mechanical loading in females during side cutting, J Biomech, 45, pp. 2444-2449, (2012); Heiderscheit B., Movement variability as a clinical measure for locomotion, J Appl Biomech, 16, pp. 419-427, (2000); Preatoni E., Hamill J., Harrison A.J., Hayes K., van Emmerick R.E.A., Wilson C., Et al., Movement variability and skills monitoring in sports, Sport Biomech, 12, pp. 69-92, (2013)","","","Elsevier","09666362","","GAPOF","25843234","English","Gait Posture","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84928586799" "de Witt J.K.; Hinrichs R.N.","de Witt, John K. (24170598200); Hinrichs, Richard N. (7005746354)","24170598200; 7005746354","Mechanical factors associated with the development of high ball velocity during an instep soccer kick","2012","Sports Biomechanics","11","3","","382","390","8","36","10.1080/14763141.2012.661757","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84866004749&doi=10.1080%2f14763141.2012.661757&partnerID=40&md5=14c6918fa97920adff8667e89d49ca82","Department of Kinesiology, Arizona State University, Tempe, AZ, United States","de Witt J.K., Department of Kinesiology, Arizona State University, Tempe, AZ, United States; Hinrichs R.N., Department of Kinesiology, Arizona State University, Tempe, AZ, United States","The purpose of this study was to determine whether joint velocities and segmental angular velocities are significantly correlated with ball velocity during an instep soccer kick. We developed a deterministic model that related ball velocity to kicking leg and pelvis motion from the initiation of downswing until impact. Three-dimensional videography was used to collect data from 16 experienced male soccer players (age = 24.8 ± 5.5 years; height = 1.80 ± 0.07 m; mass = 76.73 ± 8.31 kg) while kicking a stationary soccer ball into a goal 12 m away with their right foot with maximal effort. We found that impact velocities of the foot center of mass (CM), the impact velocity of the foot CM relative to the knee, peak velocity of the knee relative to the hip, and the peak angular thigh velocity were significantly correlated with ball velocity. These data suggest that linear and angular velocities at and prior to impact are critical to developing high ball velocity. Since events prior to impact are critical for kick success, coordination and summation of speeds throughout the kicking motion are important factors. Segmental coordination that occurs during a maximal effort kick is critical for completing a successful kick. © 2012 Copyright Taylor and Francis Group, LLC.","coordination; correlation; Deterministic model; impact; summation","Adult; Biomechanics; Foot; Hip; Humans; Imaging, Three-Dimensional; Knee Joint; Male; Models, Theoretical; Movement; Soccer; Video Recording; Young Adult; adult; article; biomechanics; foot; hip; human; knee; male; movement (physiology); physiology; sport; theoretical model; three dimensional imaging; videorecording","Abdel-Aziz Y.I., Karara H.M., Direct linear transformation from comparator coordinates into object space coordinates in close-range photogrammetry, Proceedings of the Symposium on Close-Range Photogrammetry, pp. 1-18, (1971); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VII-B, pp. 695-700, (1983); Barfield W., Effects of selected kinematic and kinetic variables on instep kicking with dominant and nondominant limbs, Journal of Human Movement Studies, 29, pp. 251-272, (1995); Bull-Andersen T., Dorge H.C., Thomsen F.I., Collisions in soccer kicking, Sports Engineering, 2, pp. 121-125, (1999); DeLeva P., Adjustments to Zatsiorsky-Seluyanov's segment inertia parameters, Journal of Biomechanics, 29, pp. 1223-1230, (1996); Dorge H., Bull-Andersen T., Sorensen H., Simonsen E., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, pp. 293-299, (2002); Godik M., Fales I., Blashak I., Changing the kicking accuracy of soccer players depending on the type, value and aims of training and competitive loads, Science and soccer II, pp. 254-260, (1993); Hay J.G., Reid J.G., Anatomy, mechanics and human motion, (1988); Hay J.G., Miller J.A., Cantera R.W., The techniques of elite male long jumpers, Journal of Biomechanics, 19, pp. 855-866, (1986); Hinrichs R.N., Upper extremity function in running, (1982); Isokawa M., Lees A., A biomechanical analysis of the instep kick motion in soccer, Science and football, pp. 449-455, (1988); Jackson K.M., Fitting of mathematical functions to biomechanical data, IEEE Transactions on Biomedical Engineering, BME-26, pp. 122-124, (1979); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Science and Medicine, 6, pp. 154-165, (2007); Lees A., Biomechanics applied to soccer skills, Science and soccer, pp. 123-133, (1996); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (1998); Macmillan M.B., The determinants of the flight of the kicked football, Research Quarterly for Exercise and Sport, 46, pp. 48-57, (1975); Miller D.I., Nelson R.C., Biomechanics of sport, (1973); Nunome H., Asai T., Ikegami Y., Sakurai S., A three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, pp. 2028-2036, (2002); Plagenhoef S., Patterns of human motion: A cinematographic analysis, pp. 98-115, (1971); Putnam C.A., Sequential motions of body segments in striking and throwing skills: Descriptions and explanations, Journal of Biomechanics, 26, S1, pp. 125-135, (1993); Vint P.F., Hinrichs R.N., Endpoint error in smoothing and differentiating raw kinematic data: An evaluation of four popular methods, Journal of Biomechanics, 29, pp. 1637-1642, (1996); Winter D.A., Sidwell H.G., Hobson D.A., Measurement and reduction of noise in kinematics of locomotion, Journal of Biomechanics, 7, pp. 157-159, (1974)","J. K. de Witt; Department of Kinesiology, Arizona State University, Tempe, AZ, United States; email: john.k.dewitt@nasa.gov","","","17526116","","","23072048","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-84866004749" "Cortes N.; Blount E.; Ringleb S.; Onate J.A.","Cortes, Nelson (23033673100); Blount, Elaine (15831041400); Ringleb, Stacie (7801640194); Onate, James A. (7004831141)","23033673100; 15831041400; 7801640194; 7004831141","Soccer-specific video simulation for improving movement assessment","2011","Sports Biomechanics","10","1","","22","34","12","27","10.1080/14763141.2010.547591","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952513000&doi=10.1080%2f14763141.2010.547591&partnerID=40&md5=c0f873e8bea2b8bf0437fbc6a2c6256b","Sports Medicine Assessment Research and Testing (SMART) Laboratory, School of Recreation, Health and Tourism, George Mason University, MS 4E5, Manassas 20110, 10900 University Boulevard, United States; Virginia Modeling, Analysis and Simulation Center, Old Dominion University, Norfolk, United States; Department of Mechanical Engineering, Old Dominion University, Norfolk, United States; School of Allied Medical Professions, The Ohio State University, Columbus, United States","Cortes N., Sports Medicine Assessment Research and Testing (SMART) Laboratory, School of Recreation, Health and Tourism, George Mason University, MS 4E5, Manassas 20110, 10900 University Boulevard, United States; Blount E., Virginia Modeling, Analysis and Simulation Center, Old Dominion University, Norfolk, United States; Ringleb S., Department of Mechanical Engineering, Old Dominion University, Norfolk, United States; Onate J.A., School of Allied Medical Professions, The Ohio State University, Columbus, United States","The improvement of ecological validity of laboratory research studies has recently come to the forefront of technology with virtual reality scenarios. The purpose of this study was to assess differences between unanticipated and anticipated lower extremity biomechanics while performing a sidestep cutting task. A visualization software was developed for this purpose, which would recreate a soccer game situation for use in a laboratory setting. Thirteen participants volunteered for this study. Lower extremity biomechanical data were collected with a VICON motion analysis system and two force plates, under anticipated and unanticipated conditions while performing a sidestep cutting task. Paired t-tests were conducted to assess possible differences between conditions. Alpha level was set a priori at 0.05. We found an increased knee adduction angle (unanticipated: -7.2 ± 5.3°; anticipated: -4.0 ± 5.3°), and knee internal rotation (unanticipated: 8.1 ± 4.7°; anticipated: 5.2 ± 6.5°) when performing the unanticipated condition (p < 0.05). The methodological approaches for studies investigating the factors possibly associated with ACL injury may need to take into account the laboratory environment and how the task(s) are presented to the participants. © 2011 Taylor & Francis.","Anticipated; Soccer; Software; Unanticipated; Visualization","Athletic Performance; Biomechanics; Humans; Imaging, Three-Dimensional; Knee Joint; Movement; Soccer; Software; Video Recording; article; athletic performance; biomechanics; computer program; human; knee; movement (physiology); physiology; sport; three dimensional imaging; videorecording","Andrews J.R., Axe M.J., The classification of knee ligament instability, Orthopedic Clinics of North America, 16, pp. 69-82, (1985); Beaulieu M.L., Lamontagne M., Xu L., Gender differences in time-frequency EMG analysis of unanticipated cutting maneuvers, Medicine and Science in Sports and Exercise, 40, pp. 1795-1804, (2008); Begon M., Monnet T., Lacouture P., Effects of movement for estimating the hip joint centre, Gait Posture, 25, pp. 353-359, (2007); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Medicine and Science in Sports and Exercise, 35, pp. 119-127, (2003); Besier T.F., Lloyd D.G., Ackland T.R., Cochrane J.L., Anticipatory effects on knee joint loading during running and cutting maneuvers, Medicine and Science in Sports and Exercise, 33, pp. 1176-1181, (2001); Blackburn J.T., Padua D.A., Influence of trunk flexion on hip and knee joint kinematics during a controlled drop landing, Clinical Biomechanics, 23, pp. 313-319, (2008); Blount E., Generating demographically accurate household information, VMASC 2007 Capstone Conference, (2007); Chappell J.D., Limpisvasti O., Effect of a neuromuscular training program on the kinetics and kinematics of jumping tasks, American Journal of Sports Medicine, 36, pp. 1081-1086, (2008); Colby S., Francisco A., Yu B., Kirkendall D., Finch M., Garrett Jr. W., Electromyographic and kinematic analysis of cutting maneuvers. Implications for anterior cruciate ligament injury, America Journal of Sports Medicine, 28, pp. 234-240, (2000); Cortes N., Onate J.A., Abrantes J., Gagen L., Dowling E., van Lunen B., Effects of gender and footlanding techniques on lower extremity kinematics during drop-jump landings, Journal of Applied Biomechanics, 23, pp. 289-299, (2007); Davis I., Ireland M.L., Hanaki S., ACL injuries-the gender bias, Journal of Orthopaedic and Sports Physical Therapy, 37, (2007); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Medicine and Science in Sports and Exercise, 35, pp. 1745-1750, (2003); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Medicine and Science in Sports and Exercise, 37, pp. 124-129, (2005); Griffin L.Y., Agel J., Albohm M.J., Arendt E.A., Dick R.W., Garrett W.E., Et al., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, Journal of American Academy of Orthopaedic Surgeons, 8, pp. 141-150, (2000); Griffin L.Y., Albohm M.J., Arendt E.A., Bahr R., Beynnon B.D., Demaio M., Et al., Understanding and preventing noncontact anterior cruciate ligament injuries: A review of the Hunt Valley II meeting, January 2005, American Journal of Sports Medicine, 34, pp. 1512-1532, (2006); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, Journal of Biomechanical Engineering, 105, pp. 136-144, (1983); Hewett T.E., Myer G., Gregory D., Ford K.R., Heidt R.S., Colosimo A.J., Et al., Neuromuscular control and valgus loading of the knee predict ACL injury risk in female athletes, Medicine and Science in Sports and Exercise, 36, (2004); Hick W.E., On the rate of gain of information, Quarterly Journal of Experimental Psychology, 4, pp. 11-26, (1952); Houck J., Muscle activation patterns of selected lower extremity muscles during stepping and cutting tasks, Journal of Electromyography and Kinesiology, 13, pp. 545-554, (2003); Houck J.R., Duncan A., Haven K.E., Comparison of frontal plane trunk kinematics and hip and knee moments during anticipated and unanticipated walking and side step cutting tasks, Gait Posture, 24, pp. 314-322, (2006); Hyman R., Stimulus information as a determinant of reaction time, Journal of Experimental Psychology, 45, pp. 188-196, (1953); Kernozek T.W., Torry M.R., van Hoof H., Cowley H., Tanner S., Gender differences in frontal and sagittal plane biomechanics during drop landings, Medicine & Science in Sports Exercise, 37, pp. 1003-1012, (2005); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clinical Biomechanics, 16, pp. 438-445, (2001); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, Journal of Orthopaedic Research, 13, pp. 930-935, (1995); McLean S.G., Huang X., Su A., van den Bogert A.J., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clinical Biomechanics, 19, pp. 828-838, (2004); McLean S.G., Huang X., van den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clinical Biomechanics, 20, pp. 863-870, (2005); Parsons T.D., Silva T.M., Pair J., Rizzo A.A., Virtual environment for assessment of neurocognitive functioning: Virtual reality cognitive performance assessment test, Studies in Health Technology and Informatics, 132, pp. 351-356, (2008); Pollard C.D., Heiderscheit B., Davis I.M., Hamill J., Influence of gender on lower extremity segment and joint coordination during an unanticipated cutting maneuver, Medicine and Science in Sports and Exercise, 36, (2004); Pollard C.D., Heiderscheit B.C., van Emmerik R.E., Hamill J., Gender differences in lower extremity coupling variability during an unanticipated cutting maneuver, Journal of Applied Biomechanics, 21, pp. 143-152, (2005); Robins D.L., Hunyadi E., Schultz R.T., Superior temporal activation in response to dynamic audiovisual emotional cues, Brain and Cognition, 69, pp. 269-278, (2009); Russell K.A., Palmieri R.M., Zinder S.M., Ingersoll C.D., Sex differences in valgus knee angle during a single-leg drop jump, Journal of Athletic Training, 41, pp. 166-171, (2006); Schwartz M.H., Rozumalski A., A new method for estimating joint parameters from motion data, Journal of Biomechanics, 38, pp. 107-116, (2005); Seegmiller J.G., McCaw S.T., Ground reaction forces among gymnasts and recreational athletes in drop landings, Journal of Athletic Training, 38, pp. 311-314, (2003); Shiffman S., Stone A.A., Hufford M.R., Ecological momentary assessment, Annual Review of Clinical Psychology, 4, pp. 1-32, (2008); Wesson J., The science of soccer, (2002); Winter D.A., Biomechanics and motor control of human movement, pp. 75-102, (2005)","N. Cortes; Sports Medicine Assessment Research and Testing (SMART) Laboratory, School of Recreation, Health and Tourism, George Mason University, MS 4E5, Manassas 20110, 10900 University Boulevard, United States; email: ncortes@gmu.edu","","","17526116","","","21560749","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-79952513000" "Nagano T.; Kato T.; Fukuda T.","Nagano, Tomohisa (7202185981); Kato, Takaaki (55483079400); Fukuda, Tadahiko (7404414931)","7202185981; 55483079400; 7404414931","Visual behaviors of soccer players while kicking with the inside of the foot","2006","Perceptual and Motor Skills","102","1","","147","156","9","27","10.2466/PMS.102.1.147-156","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33646786805&doi=10.2466%2fPMS.102.1.147-156&partnerID=40&md5=b0a22e830ccaa631c8ab23afedb38c8f","Keio University, Japan; Graduate School of Media and Governance, Keio University, Fujisawa-shi, Kanagawa, 252-8520, 5322 Endoh, Japan","Nagano T., Keio University, Japan, Graduate School of Media and Governance, Keio University, Fujisawa-shi, Kanagawa, 252-8520, 5322 Endoh, Japan; Kato T., Keio University, Japan; Fukuda T., Keio University, Japan","This study analyzed the visual behaviors of soccer players while they kicked with the inside of the foot, which involved near and far aiming skills. Participants (N = 8) were required to step forward and kick a ball to hit a target. The top three scorers were defined as the High-score group, and the three low scorers were defined as the Low-score group. Analysis indicated that the High-score group was characterized by longer quiet eye durations, which were defined as the final fixation durations on the target prior to the initiation of a kicking movement, than the Low-score group in the preparation phase. The High-score group also set their visual pivot on the frontal space between the target and the ball in the kicking phase. These two visual behaviors of the High-score group are important for soccer players to kick a ball successfully with the inside of the foot. © Perceptual and Motor Skills 2006.","","Adult; Biomechanics; Fixation, Ocular; Foot; Humans; Male; Movement; Psychomotor Performance; Soccer; Visual Perception; adult; article; biomechanics; eye fixation; foot; human; male; movement (physiology); psychomotor performance; sport; vision","Abrams R.A., Eye-hand coordination: Spatial localization after saccadic and pursuit eye movements, Journal of Motor Behavior, 26, pp. 215-224, (1994); Abrams R.A., Meyer D., Kornblum S., Eye-hand coordination: Oculomotor control in rapid aimed limb movements, Journal of Experimental Psychology: Human Perception and Performance, 16, pp. 248-267, (1990); Helsen W., Pauwels J.M., Analysis of visual search activity in solving tactical game problems, Visual Search, pp. 177-184, (1990); Helsen W., Pauwels J.M., The relationship between expertise and visual information processing in sport, Cognitive Issues in Motor Expertise, pp. 109-134, (1993); Janelle C.M., Hillman C.H., Affaires R., Murray N.P., Meili L., Fallon E.A., Hatfield B.D., Expertise differences in cortical activation and gaze behavior during rifle shooting, Journal of Sport and Exercise Psychology, 22, pp. 167-182, (2000); Kato T., Fukuda T., Visual search strategies of baseball batters: Eye movement during the preparatory phase of batting, Perceptual and Motor Skills, 94, pp. 380-386, (2002); Lees A., Biomechanics applied to soccer skills, Science and Soccer, pp. 109-119, (2003); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (1998); Nagano T., Kato T., Fukuda T., Visual search strategies of soccer players in one-on-one defensive situations on the field, Perceptual and Motor Skills, 99, pp. 968-974, (2004); Naito K., Kato T., Fukuda T., Expertise and position of line of sight in golf putting, Perceptual and Motor Skills, 99, pp. 163-170, (2004); Ripoll H., The understanding-acting process in sport: The relationship between the semantic and the sensorimotor visual function, International Journal of Sport Psychology, 22, pp. 221-243, (1991); Ripoll H., Kerlirzin Y., Stein J.F., Reine B., Analysis of information processing, decision making, and visual strategies in complex problem solving sport situations, Human Movement Science, 14, pp. 325-349, (1995); Singer R.N., Performance and human factor: Considerations about cognition and attention for self-paced and externally-paced events, Ergonomics, 43, pp. 1661-1680, (2000); Vickers J.N., Gaze control in putting, Perception, 21, pp. 117-132, (1992); Vickers J.N., Control of visual attention during the basketball free throw, The American Journal of Sports Medicine, 24, (1996); Vickers J.N., Visual control when aiming at a far target, Journal of Experimental Psychology: Human Perception and Performance, 22, pp. 342-354, (1996); Vickers J.N., Rodrigues S.T., Edworthy G., Quiet eye and accuracy in the dart throw, International Journal of Sports Vision, 6, pp. 30-36, (2000); Williams A.M., Davids K., Visual search strategy, selective attention, and expertise in soccer, Research Quarterly for Exercise and Sport, 69, pp. 111-128, (1998); Williams A.M., Davids K., Burwitz L., Williams J.G., Visual search strategies in experienced and inexperienced soccer players, Research Quarterly for Exercise and Sport, 65, pp. 127-135, (1994); Williams A.M., Elliott D., Anxiety, expertise, and visual search strategy in karate, Journal of Sports and Exercise Psychology, 21, pp. 562-1375, (1999); Williams A.M., Janelle C.M., Davids K., Constraints on the search for visual information in sport, International Journal of Sports and Exercise Psychology, 2, pp. 301-318, (2004); Williams A.M., Singer R.N., Frehlich S., Quiet eye duration, task complexity, and expertise in a near and far aiming task, Journal of Motor Behavior, 34, pp. 197-207, (2002); Zelaznik H.N., Hawkins B., Kisselburgh L., Rapid visual feedback processing in single-aiming movements, Journal of Motor Behavior, 15, pp. 217-236, (1983)","T. Nagano; Graduate School of Media and Governance, Keio University, Fujisawa-shi, Kanagawa, 252-8520, 5322 Endoh, Japan; email: tomoh@stc.keio.ac.jp","","","00315125","","PMOSA","16671613","English","Percept. Mot. Skills","Article","Final","","Scopus","2-s2.0-33646786805" "Grooms D.R.; Kiefer A.W.; Riley M.A.; Ellis J.D.; Thomas S.; Kitchen K.; DiCesare C.A.; Bonnette S.; Gadd B.; Foss K.D.B.; Yuan W.; Silva P.; Galloway R.; Diekfuss J.A.; Leach J.; Berz K.; Myer G.D.","Grooms, Dustin R. (55616564700); Kiefer, Adam W. (35316086800); Riley, Michael A. (7203009785); Ellis, Jonathan D. (57202255000); Thomas, Staci (55772425700); Kitchen, Katie (57195460949); DiCesare, Christopher A. (55620685100); Bonnette, Scott (55004035700); Gadd, Brooke (57003350800); Foss, Kim D. Barber (6507308390); Yuan, Weihong (35305992600); Silva, Paula (16302548400); Galloway, Ryan (57198796785); Diekfuss, Jed A. (56784267000); Leach, James (56823049500); Berz, Kate (6507468619); Myer, Gregory D. (6701852696)","55616564700; 35316086800; 7203009785; 57202255000; 55772425700; 57195460949; 55620685100; 55004035700; 57003350800; 6507308390; 35305992600; 16302548400; 57198796785; 56784267000; 56823049500; 6507468619; 6701852696","Brain-behavior mechanisms for the transfer of neuromuscular training adaptions to simulated sport: Initial findings from the train the brain project","2018","Journal of Sport Rehabilitation","27","5","","1","5","4","36","10.1123/jsr.2017-0241","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053299844&doi=10.1123%2fjsr.2017-0241&partnerID=40&md5=e94610f1e711d651c5d65400cc6d4981","Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, OH, United States; Division of Athletic Training, School of Applied Health Sciences and Wellness, College of Health Sciences and Professions, Ohio University, Athens, OH, United States; The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; University of Cincinnati College of Medicine, Cincinnati, OH, United States; Center for Cognition, Action and Perception, Department of Psychology, University of Cincinnati, Cincinnati, OH, United States; Pediatric Neuroimaging Research Consortium, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Duke University School of Medicine, Durham, NC, United States; Division of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Department of Pediatrics and Orthopaedic Surgery, University of Cincinnati, Cincinnati, OH, United States; Micheli Center for Sports Injury Prevention, Waltham, MA, United States; Department of Orthopaedics, University of Pennsylvania, Philadelphia, PA, United States","Grooms D.R., Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, OH, United States, Division of Athletic Training, School of Applied Health Sciences and Wellness, College of Health Sciences and Professions, Ohio University, Athens, OH, United States; Kiefer A.W., The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, University of Cincinnati College of Medicine, Cincinnati, OH, United States, Center for Cognition, Action and Perception, Department of Psychology, University of Cincinnati, Cincinnati, OH, United States; Riley M.A., Center for Cognition, Action and Perception, Department of Psychology, University of Cincinnati, Cincinnati, OH, United States; Ellis J.D., The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, University of Cincinnati College of Medicine, Cincinnati, OH, United States; Thomas S., The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Kitchen K., The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; DiCesare C.A., The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Bonnette S., The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Gadd B., The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Foss K.D.B., The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Yuan W., University of Cincinnati College of Medicine, Cincinnati, OH, United States, Pediatric Neuroimaging Research Consortium, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Silva P., Center for Cognition, Action and Perception, Department of Psychology, University of Cincinnati, Cincinnati, OH, United States; Galloway R., The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Duke University School of Medicine, Durham, NC, United States; Diekfuss J.A., The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Leach J., Division of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Berz K., The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Myer G.D., The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, University of Cincinnati College of Medicine, Cincinnati, OH, United States, Department of Pediatrics and Orthopaedic Surgery, University of Cincinnati, Cincinnati, OH, United States, Micheli Center for Sports Injury Prevention, Waltham, MA, United States, Department of Orthopaedics, University of Pennsylvania, Philadelphia, PA, United States","Context: A limiting factor for reducing anterior cruciate ligament injury risk is ensuring that the movement adaptions made during the prevention program transfer to sport-specific activity. Virtual reality provides a mechanism to assess transferability, and neuroimaging provides a means to assay the neural processes allowing for such skill transfer. Objective: To determine the neural mechanisms for injury risk-reducing biomechanics transfer to sport after anterior cruciate ligament injury prevention training. Design: Cohort study. Setting: Research laboratory. Participants: Four healthy high school soccer athletes. Interventions: Participants completed augmented neuromuscular training utilizing real-time visual feedback. An unloaded knee extension task and a loaded leg press task were completed with neuroimaging before and after training. A virtual reality soccerspecific landing task was also competed following training to assess transfer of movementmechanics. Main OutcomeMeasures: Landing mechanics during the virtual reality soccer task and blood oxygen level-dependent signal change during neuroimaging. Results: Increased motor planning, sensory and visual region activity during unloaded knee extension and decreased motor cortex activity during loaded leg press were highly correlated with improvements in landing mechanics (decreased hip adduction and knee rotation). Conclusion: Changes in brain activity may underlie adaptation and transfer of injury risk-reducing movement mechanics to sport activity. Clinicians may be able to target these specific brain processes with adjunctive therapy to facilitate intervention improvements transferring to sport. © 2018 Human Kinetics, Inc.","Anterior cruciate ligament; Injury prevention; Motor control; Motor learning","Adaptation, Physiological; Anterior Cruciate Ligament Injuries; Athletes; Biomechanical Phenomena; Brain; Cohort Studies; Female; Humans; Motor Cortex; Movement; Neuroimaging; Neuronal Plasticity; Oxygen; Physical Conditioning, Human; Soccer; Sports; Virtual Reality; oxygen; accident prevention; adduction; adult; anterior cruciate ligament; article; athlete; BOLD signal; brain function; case report; clinical article; clinician; cohort analysis; female; high school; hip; human; male; motor control; motor cortex; motor learning; neuroimaging; rotation; simulation; soccer; virtual reality; visual feedback; adaptation; anterior cruciate ligament injury; biomechanics; blood; brain; exercise; motor cortex; movement (physiology); nerve cell plasticity; physiology; soccer; sport","Sugimoto D., Myer G.D., Barber Foss K.D., Hewett T.E., Specific exercise effects of preventive neuromuscular training intervention on anterior cruciate ligament injury risk reduction in young females: meta-analysis and subgroup analysis, Br J Sports Med, 49, 5, pp. 282-289, (2015); Kiefer A.W., Myer G.D., Training the antifragile athlete: a preliminary analysis of neuromuscular training effects on muscle activation dynamics, Nonlinear Dynamics Psychol Life Sci, 19, 4, pp. 489-510, (2015); Myer G.D., Stroube B.W., DiCesare C.A., Et al., Augmented feedback supports skill transfer and reduces high-risk injury landing mechanics: a double-blind, randomized controlled laboratory study, Am J Sports Med, 41, 3, pp. 669-677, (2013); Kristianslund E., Krosshaug T., Comparison of drop jumps and sportspecific sidestep cutting: implications for anterior cruciate ligament injury risk screening, Am J Sports Med, 41, 3, pp. 684-688, (2013); Chaudhari A.M., Hearn B.K., Andriacchi T.P., Sport-dependent variations in arm position during single-limb landing influence knee loading: implications for anterior cruciate ligament injury, Am J Sports Med, 33, 6, pp. 824-830, (2005); Kiefer A.W., DiCesare C., Bonnette S., Et al., Sport-specific virtual reality to identify profiles of anterior cruciate ligament injury risk curing unanticipated cutting, (2017); Rose F.D., Attree E.A., Brooks B.M., Parslow D.M., Penn P.R., Ambihaipahan N., Training in virtual environments: transfer to real world tasks and equivalence to real task training, Ergonomics, 43, 4, pp. 494-511, (2000); Powers C.M., Fisher B., Mechanisms underlying ACL injury-prevention training: the brain-behavior relationship, J Athl Train, 45, 5, pp. 513-515, (2010); Seidler R.D., Noll D.C., Neuroanatomical correlates of motor acquisition and motor transfer, J Neurophysiol, 99, 4, pp. 1836-1845, (2008); Myer G.D., Paterno M.V., Ford K.R., Hewett T.E., Neuromuscular training techniques to target deficits before return to sport after anterior cruciate ligament reconstruction, J Strength Cond Res, 22, 3, pp. 987-1014, (2008); Hewett T.E., Ford K.R., Xu Y.Y., Khoury J., Myer G.D., Effectiveness of neuromuscular training based on the neuromuscular risk profile, Am J Sports Med, 45, 9, pp. 2142-2147, (2017); Grooms D.R., Page S.J., Nichols-Larsen D.S., Chaudhair A.M., White S.E., Onate J.A., Neuroplasticity associated with anterior cruciate ligament reconstruction, J Orthop Sports Phys Ther, 47, 3, pp. 180-189, (2017); Grooms D.R., Page S.J., Onate J.A., Brain activation for knee movement measured days before second anterior cruciate ligament injury: neuroimaging in musculoskeletal medicine, J Athl Train, 50, 10, pp. 1005-1010, (2015); Del Percio C., Babiloni C., Marzano N., Et al., Neural efficiency' of athletes' brain for upright standing: a high-resolution EEG study, Brain Res Bull, 79, 3-4, pp. 193-200, (2009); Picard N., Matsuzaka Y., Strick P.L., Extended practice of a motor skill is associated with reduced metabolic activity in M1, Nat Neurosci, 16, 9, pp. 1340-1347, (2013); Dunst B., Benedek M., Jauk E., Et al., Neural efficiency as a function of task demands, Intelligence, 42, 100, pp. 22-30, (2014); Wulf G., Lewthwaite R., Optimizing performance through intrinsic motivation and attention for learning: the OPTIMAL theory of motor learning, Psychon Bull Rev, 23, 5, pp. 1382-1414, (2016); Gokeler A., Benjaminse A., Hewett T.E., Et al., Feedback techniques to target functional deficits following anterior cruciate ligament reconstruction: implications for motor control and reduction of second injury risk, Sports Med, 43, 11, pp. 1065-1074, (2013); Kim K.-M., Kim J.-S., Grooms D.R., Stroboscopic vision to induce sensory reweighting during postural control, J Sport Rehabil, 12, pp. 1-11, (2017)","D.R. Grooms; Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, United States; email: groomsd@ohio.edu","","Human Kinetics Publishers Inc.","10566716","","JSRHE","29584523","English","J. Sport Rehabil.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85053299844" "Wallace B.J.; Kernozek T.W.; Mikat R.P.; Wright G.A.; Simons S.Z.; Wallace K.L.","Wallace, Brian J. (14018614400); Kernozek, Thomas W. (6604024019); Mikat, Richard P. (6507438275); Wright, Glenn A. (22982158700); Simons, Samuel Z. (24773973500); Wallace, Kelly L. (24774052200)","14018614400; 6604024019; 6507438275; 22982158700; 24773973500; 24774052200","A comparison between back squat exercise and vertical jump kinematics: Implications for determining anterior cruciate ligament injury risk","2008","Journal of Strength and Conditioning Research","22","4","","1249","1258","9","26","10.1519/JSC.0b013e31816d66a4","https://www.scopus.com/inward/record.uri?eid=2-s2.0-51249101180&doi=10.1519%2fJSC.0b013e31816d66a4&partnerID=40&md5=52d2377bc306653842e9a14248329175","Departments of Health Professions, University of Wisconsin-La Crosse, La Crosse, WI, United States; Exercise and Sport Science, University of Wisconsin-La Crosse, La Crosse, WI, United States","Wallace B.J., Departments of Health Professions, University of Wisconsin-La Crosse, La Crosse, WI, United States, Exercise and Sport Science, University of Wisconsin-La Crosse, La Crosse, WI, United States; Kernozek T.W., Departments of Health Professions, University of Wisconsin-La Crosse, La Crosse, WI, United States; Mikat R.P., Exercise and Sport Science, University of Wisconsin-La Crosse, La Crosse, WI, United States; Wright G.A., Exercise and Sport Science, University of Wisconsin-La Crosse, La Crosse, WI, United States; Simons S.Z., Exercise and Sport Science, University of Wisconsin-La Crosse, La Crosse, WI, United States; Wallace K.L., Exercise and Sport Science, University of Wisconsin-La Crosse, La Crosse, WI, United States","Wallace, BJ, Kernozek, TW, Mikat, RP, Wright, GA, Simons, SZ, and Wallace, KL. A comparison between back squat exercise and vertical jump kinematics: implications for determining anterior cruciate ligament injury risk. J Strength Cond Res 22:1249-1258, 2008-Women are up to eight times more likely than men to suffer an anterior cruciate ligament (ACL) injury, and knee valgus is perhaps the most at-risk motion. Women have been shown to have more knee valgus than men in squatting movements and while landing. The purposes were to investigate whether a relationship exists between lower-extremity frontal plane motions in squatting and landing, whether gender differences exist, and whether squat or hip abduction strength relates to knee valgus while landing. Eleven collegiate Division III soccer players and 11 recreationally trained men were tested for maximal vertical jump height and for squat and hip abduction strength. On the second day of testing, subjects performed light (50% one repetition maximum) and heavy (85%) squat protocols and three landings from their maximal vertical jump height. Pearson's product-moment correlation coefficients and a 2 × 10 factorial analysis of variance with f-test post hoc comparisons (p ≤ 0.05) were conducted. No strong correlations were shown between any of the squat conditions (eccentric and concentric light, eccentric and concentric heavy) and landing for hip abduction or knee valgus angles. Squat strength did not correlate well with knee valgus angle during landing in men or women. However, hip abduction strength did in women (R2 = 0.51) but not men (R 2 = 0.10). In hip abduction angle, the eccentric portion of the light squat, eccentric and concentric portions of the heavy squat, and vertical jump landing conditions were different between genders. In knee valgus angle, only the heavy squat conditions were significantly different. Squat strength and observing squat kinematics do not seem to be a method of identifying those at risk while landing; however, hip abduction strength may be in women. © 2008 National Strength and Conditioning Association.","ACL; Back squat; Biomechanics; Drop landing","Adult; Anterior Cruciate Ligament; Biomechanics; Exercise; Female; Hip Joint; Humans; Lower Extremity; Male; Movement; Muscle Strength; Risk Assessment; Sex Factors; adult; anterior cruciate ligament; article; biomechanics; comparative study; exercise; female; hip; human; injury; leg; male; movement (physiology); muscle strength; physiology; risk assessment; sex difference","Agre J.C., Margness J.L., Hull S.Z., Wright K.C., Baxter T.L., Patterson R., Stradel L., Strength testing with a portable dynamometer: Reliability of upper and lower extremities, Arch Phys Med Rehab, 68, pp. 454-458, (1987); Arendt E., Angel J., Dick R., Anterior cruciate ligament injury patterns among collegiate men and women, J Athlet Train, 34, pp. 86-92, (1999); 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Escamilla R.F., Knee biomechanics of the dynamic squat exercise, Med Sci Sports Exerc, 33, pp. 127-141, (2001); Ferretti A., Papandrea P., Conteduca F., Mariani P., Knee ligament injuries in volleyball players, Am J Sports Med, 20, pp. 203-207, (1992); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, pp. 1745-1750, (2003); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes, Am J Sports Med, 27, pp. 699-706, (1999); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., Mclean S.G., Van Den Bogert A.A.J., Paterno M.V., Succop P., Bio-mechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes, Am J Sports Med, 33, pp. 492-501, (2005); Huston L.J., Wojtys E.M., Neuromuscular performance characteristics in elite female athletes, Am J Sports Med, 24, pp. 427-436, (1996); Kernozek T.W., Torry M.R., Van Hoof H., Cowley H., Tanner S., Gender differences in frontal and sagittal plane biomechanics during drop landings, Med Sci Sports Exerc, 37, pp. 1003-1012, (2005); Lephart S.M., Abt J.P., Ferris C.M., Sell T.C., Nagai T., Irrgang J.J., Neuromuscular and biomechanical characteristic changes in high school athletes: A plyometric versus basic resistance program, Br J Sports Med, 39, pp. 932-938, (2005); Lephart S.M., Ferris C.M., Riemann B.L., Myers J.B., Fu F.H., Gender differences in strength and lower extremity kinematics during landing, Clin Orthop Relat Res, 401, pp. 162-169, (2002); Malinzak R.A., Colby S.M., Kirkendale D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech, 16, pp. 438-445, (2001); Malone T.R., Hardacker W.T., Garrett W.E., Feagin J.A., Bassett F.H., Relationship of gender to anterior cruciate ligament injuries in intercollegiate basketball players, J South Orthop Assoc2, pp. 36-39, (1993); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A.M., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, pp. 930-935, (1995); Mclean S.G., Walker K., Ford K.R., Myer G.D., Hewett T.E., Van Den Bogert A.J., Evaluation of a two dimensional analysis method as a screening and evaluation tool for anterior cruciate ligament injury, Br J Sports Med, 39, pp. 355-362, (2005); Myer G.D., Ford K.R., Palumbo J.P., Hewett T.E., Neuromuscular training improves performance and lower-extremity biomechanics in female athletes, J Strength Cond Res, 19, pp. 51-60, (2005); Nadler S.F., Deprince S.F., Hausien N., Malanga G.A., Stitik T.P., Price E., Portable dynamometer anchoring station for measuring strength of hip abductors and extensors, Arch Phys Med Rehab, 81, pp. 1072-1076, (2000); Noyes F.R., Barber-Westin S.D., Fleckenstein C., Walsh C., West J., The drop-jump screening test, Am J Sports Med, 33, pp. 197-207, (2005); Noyes F., Mooar P., Matthews D., Butler D., The symptomatic ACL-deficient knee, J Bone Joint Surg Am, 65, pp. 154-174, (1983); Paterno M.V., Myer G.D., Ford K.R., Hewett T.E., Neuromuscular training improves single-limb stability in young female athletes, J Orthop Sports Phys Ther, 34, pp. 305-316, (2004); Rozzi S.L., Lephart S.M., Gear W.S., Fu F.H., Knee joint laxity and neuromuscular characteristics of male and female soccer and basketball players, Am J Sports Med, 27, pp. 312-319, (1999); Seidel G.K., Marchinda D.M., Dijkers M., Soutas-Little R.W., Hip joint center location from palable bony landmarks: A cadaver study, J Biomech, 28, pp. 995-998, (1995); Shields R.K., Madhavan S., Gregg J., Leitch E., Petersen B., Salata S., Wallerich S., Neuromuscular control of the knee during a resisted single-limb squat exercise, Am J Sports Med, 33, pp. 1520-1526, (2005); Shultz S.J., Perrin D.H., Adams J.M., Arnold B.L., Gansneder B.M., Granata K.P., Assessment of neuromuscular response characteristics at the knee following a functional perturbation, J Electromyogr Kinesiol, 10, pp. 159-170, (2000); Yu B., McClure S.B., Onate J.A., Guskiewicz K.M., Kirdendall D.T., Facsm D.T., Garrett T.E., Age and gender effects on landing kinematics of youth soccer players during a stop-jump task, Med Sci Sports Exerc, 36, pp. 151-152, (2004); Zazulak B.T., Ponce P.L., Straub S.J., Medvecky M.J., Avedisian L., Hewett T.E., Gender comparison of hip muscle activity during single-leg landing, J Orthop Sports Phys Ther, 35, pp. 292-299, (2005); Zeller B.L., McCrory J.L., Kibler W.B., Uhl T.L., Differences in kinematics and electromyographic activity between men and women during the single-legged squat, Am J Sports Med, 31, pp. 449-456, (2003); Zhang L., Xu D., Wang G., Hendrix R.W., Muscle strength in knee varus and valgus, Med Sci Sports Exerc, 33, pp. 1194-1199, (2001)","T. W. Kernozek; Departments of Health Professions, University of Wisconsin-La Crosse, La Crosse, WI, United States; email: kernozek.thom@uwlax.edu","","NSCA National Strength and Conditioning Association","10648011","","","18545181","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-51249101180" "Naito K.; Fukui Y.; Maruyama T.","Naito, Kozo (35368941700); Fukui, Yosuke (36436919600); Maruyama, Takeo (55796621321)","35368941700; 36436919600; 55796621321","Multijoint kinetic chain analysis of knee extension during the soccer instep kick","2010","Human Movement Science","29","2","","259","276","17","37","10.1016/j.humov.2009.04.008","https://www.scopus.com/inward/record.uri?eid=2-s2.0-77950340920&doi=10.1016%2fj.humov.2009.04.008&partnerID=40&md5=6624f06a1c84174a4db728b8830ce8ae","Graduate School of Decision Science and Technology, Tokyo Institute of Technology, Tokyo, 2-12-1 Ookayama, Meguro-ku 152-8552, Japan","Naito K., Graduate School of Decision Science and Technology, Tokyo Institute of Technology, Tokyo, 2-12-1 Ookayama, Meguro-ku 152-8552, Japan; Fukui Y., Graduate School of Decision Science and Technology, Tokyo Institute of Technology, Tokyo, 2-12-1 Ookayama, Meguro-ku 152-8552, Japan; Maruyama T., Graduate School of Decision Science and Technology, Tokyo Institute of Technology, Tokyo, 2-12-1 Ookayama, Meguro-ku 152-8552, Japan","Although previous studies have shown that motion-dependent interactions between adjacent segments play an important role in producing knee extension during the soccer instep kick, detailed knowledge about the mechanisms underlying those interactions is lacking. The present study aimed to develop a 3-D dynamical model for the multijoint kinetic chain of the instep kick in order to quantify the contributions of the causal dynamical factors to the production of maximum angular velocity during knee extension. Nine collegiate soccer players volunteered to participate in the experiment and performed instep kicking movements while 3-D positional data and the ground reaction force were measured. A dynamical model was developed in the form of a linked system containing 8 segments and 18 joint rotations, and the knee extension/flexion motion was decomposed into causal factors related to muscular moment, gyroscopic moment, centrifugal force, Coriolis force, gravity, proximal endpoint linear acceleration, and external force-dependent terms. The rapid knee extension during instep kicking was found to result almost entirely from kicking leg centrifugal force, trunk rotation muscular moment, kicking leg Coriolis force, and trunk rotation gyroscopic-dependent components. Based on the finding that rapid knee extension during instep kicking stems from multiple dynamical factors, it is suggested that the multijoint kinetic chain analysis used in the present study is more useful for achieving a detailed understanding of the cause of rapid kicking leg movement than the previously used 2-D, two-segment kinetic chain model. The present results also indicated that the centrifugal effect due to the kicking hip flexion angular velocity contributed substantially to the generation of a rapid knee extension, suggesting that the adjustment between the kicking hip flexion angular velocity and the leg configuration (knee flexion angle) is more important for effective instep kicking than other joint kinematics. © 2009 Elsevier B.V.","Instep kick; Kinetic chain; Knee extension; Motion-dependent moment; Multijoint","Biomechanics; Humans; Kinetics; Knee Joint; Male; Muscle Contraction; Muscle, Skeletal; Psychomotor Performance; Range of Motion, Articular; Rotation; Soccer; Young Adult; adult; article; athlete; body movement; controlled study; Coriolis phenomenon; gravity; ground reaction force; hip; human; human experiment; joint mobility; kinematics; knee function; leg movement; muscle contraction; normal human; sport; three dimensional imaging","Ae M., Tang H.P., Yokoi T., Estimation of inertia properties of the body segments in Japanese athletes (in Japanese), Biomechanisms, 11, pp. 23-33, (1992); Andersen T.B., Dorge H.C., Thomsen F.I., Collisions in soccer kicking, Sports Engineering, 2, pp. 121-125, (1999); Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, Journal of Sports Sciences, 24, pp. 951-960, (2006); Asai T., Carre M., Akatsuka T., Haake S., The curve kick of a football. I: Impact with the foot, Sports Engineering, 5, pp. 183-192, (2002); Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, Journal of Sports Science and Medicine, 1, pp. 72-79, (2002); Chao E.Y., Justification of triaxial goniometer for the measurement of joint rotation, Journal of Biomechanics, 13, pp. 989-1006, (1980); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 20, pp. 293-299, (2002); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Aagaard H., Dyhre-Poulsen P., Et al., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scandinavian Journal of Medicine and Science in Sports, 9, pp. 195-200, (1999); Fregly B.J., Zajac F.E., A state-space analysis of mechanical energy generation, absorption and transfer during pedaling, Journal of Biomechanics, 29, pp. 81-90, (1996); Hong D.A., Cheung T.K., Robert E.M., A three-dimensional, six-chain analysis of forceful overarm throwing, Journal of Electromyography and Kinesiology, 11, pp. 95-112, (2001); Ishii H., Maruyama T., Effect of abduction angle of foot and impact point on ball behavior in inside-foot soccer kicking (in Japanese), Japanese Journal of Biomechanics in Sports and Exercise, 12, pp. 9-21, (2008); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Medicine and Science in Sports and Exercise, 36, pp. 1017-1028, (2004); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, pp. 917-927, (1998); Masuda K., Kikuhara N., Demura S., Katsuta S., Yamanaka K., Relationship between muscle strength in various isokinetic movements and kick performance among soccer players, The Journal of Sports Medicine and Physical Fitness, 45, pp. 44-52, (2005); Naito K., Maruyama T., Contributions of the muscular torques and motion-dependent torques to generate rapid elbow extension during overhand baseball pitching, Sports Engineering, 11, pp. 47-56, (2008); Neptune R.R., Zajac F.E., Kautz S.A., Muscle force redistributes segmental power for body progression during walking, Gait and Posture, 19, pp. 194-205, (2004); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, pp. 2028-2036, (2002); Nunome H., Ikegami Y., Kozakai R., Apriano T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 24, pp. 529-541, (2006); Putnam C.A., pp. 688-694, (1983); Putnam C.A., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Medicine and Science in Sports and Exercise, 23, pp. 130-144, (1991); Putnam C.A., Sequential motions of body segments in striking and throwing skills: Descriptions and explanations, Journal of Biomechanics, 26, pp. 125-135, (1993); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomechanics, 4, pp. 59-72, (2005); Zajac F.E., Neptune R.R., Kautz S.A., Biomechanics and muscle coordination of human walking. Part I: Introduction to concepts, power transfer, dynamics and simulations, Gait and Posture, 16, pp. 215-232, (2002); Zatsiorsky V.M., pp. 374-385, (2002)","K. Naito; Graduate School of Decision Science and Technology, Tokyo Institute of Technology, Tokyo, 2-12-1 Ookayama, Meguro-ku 152-8552, Japan; email: n.assk-918@w9.dion.ne.jp","","","01679457","","HMSCD","20149469","English","Hum. Mov. Sci.","Article","Final","","Scopus","2-s2.0-77950340920" "Andrzejewski M.; Chmura J.; Pluta B.; Kasprzak A.","Andrzejewski, Marcin (32067507400); Chmura, Jan (6603958590); Pluta, Beata (32267447800); Kasprzak, Andrzej (55308798400)","32067507400; 6603958590; 32267447800; 55308798400","Analysis of motor activities of professional soccer players","2012","Journal of Strength and Conditioning Research","26","6","","1481","1488","7","32","10.1519/JSC.0b013e318231ab4c","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863695368&doi=10.1519%2fJSC.0b013e318231ab4c&partnerID=40&md5=77bf8a4e77cfd3ea2ed8dc0e7872d7e1","Faculty of Methodology and Recreation, University School of Physical Education, Poznan, Poland; KKS Lech Poznań S.A, Football Club, Poznań, Poznań, Poland; Faculty of Players' Motor Activity, University School of Physical Education, Wrocław, Poland","Andrzejewski M., Faculty of Methodology and Recreation, University School of Physical Education, Poznan, Poland, KKS Lech Poznań S.A, Football Club, Poznań, Poznań, Poland; Chmura J., Faculty of Players' Motor Activity, University School of Physical Education, Wrocław, Poland; Pluta B., Faculty of Methodology and Recreation, University School of Physical Education, Poznan, Poland; Kasprzak A., KKS Lech Poznań S.A, Football Club, Poznań, Poznań, Poland","The objective of this study was to determine the distance covered by professional soccer players during matches with the use of the computerized match analysis system Amisco Pro® (version 1.0.2, Nice, France). Kinematic examination included the specification of the distance covered by 31 players participating in 4 matches in the Union of European Football Association Cup competitions during the 2008-2009 season. Data were analyzed based on players' positions on the pitch, changes in the players' motor activity intensity level, and match period (first or second half). The results of statistical analysis revealed that the average total distance covered by all players (n = 31) was 11,288 ± 734 m. With respect to the player's position on the pitch, the midfielders traveled the longest average distance (11,770 ± 554 m) during the game. This was 3% longer than the distance achieved by the attackers at 11,377 ± 584 m, and 7% longer than that achieved by the defenders 10,932 ± 728 m. The analysis of physical loads on soccer players during a match is highly useful for training individualization. It provides a tool for effective planning and for recording the loads on players, which is an indispensable element of modern coaching. © 2012 National Strength and Conditioning Association.","Biomechanics; Distance covered; Individualization; Pitch position","Analysis of Variance; Athletic Performance; Biomechanics; Humans; Motor Activity; Running; Soccer; Time and Motion Studies; analysis of variance; article; athletic performance; biomechanics; human; motor activity; physiology; running; sport; statistics; task performance","Bangsbo J., The physiology of soccer-with special reference to intense intermittent exercise, Copenhagen, Denmark: August Krogh Institute University of Copenhagen, 1993; Bangsbo J., The physiology of soccer: With special reference to intense intermittent exercise, Acta Physiol Scand, 151, SUPPL. 619, pp. 1-155, (1994); Bangsbo J., Krustrup P., Physical demands and training of top-class soccer players, Science and Football VI, pp. 318-330, (2008); Bangsbo J., Norregaard L., Thorso F., Activity profile of competition soccer, Can J Sport Sci, 16, pp. 110-116, (1991); Barros R., Milton S., Misuta R.P., Menezes P.J., Figueroa F.A., Moura S.A., Cunha R.A., Neucimar J.L., Analysis of the distances covered by first division Brazilian soccer players obtained with an automatic tracking method, J Sports Sci Med, 6, pp. 233-242, (2007); Bradley P.S., Di Mascio M., Peart D., Olsen P., Sheldon B.J., High-intensity activity profiles of elite soccer players at different performance levels, J Strength Cond Res, 24, pp. 2343-2351, (2010); Carling C., Analysis of physical activity profiles when running with the ball in a professional soccer team, J Sports Sci, 28, pp. 319-326, (2010); Carling C., Williams A.M., Reilly T., Handbook of Soccer Match Analysis: A Systematic Approach to Improving Performance, (2005); Castagna C., Impellizzeri F., Cecchini E., Rampinini E., Alvarez J.C., Effects of intermittent-endurance fitness on match performance in young male soccer players, J Strength Cond Res., 23, pp. 1954-1959, (2009); Chmura J., Mleczko M., Szyngiera W., Andrzejewski M., Dargiewicz R., Dybek T., Basiuk W., Formy aktywności ruchowej piłkarek podczas meczu, Sport Wyczynowy, 5, pp. 31-37, (2006); 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Rienzi E., Drust B., Reilly T., Carter J.E.L., Martin A., Investigation of anthropometric and work-rate profiles of elite South American international players, J Sports Med Phys Fitness, 40, pp. 162-169, (2000); Spencer M., Bishop D., Dawson B., Goodman C., Physiological and metabolic responses of repeated-sprint activities, Sports Med, 35, pp. 1025-1044, (2005); Stolen T., Chamari K., Castagna C., Physiology of soccer: An update, Sports Med, 35, pp. 501-536, (2005); Stroyer J., Hansen L., Klausen K., Physiological profile and activity pattern of young soccer players during match play, Med Sci Sport Exerc, 36, pp. 168-174, (2004); Thatcher R., Batterham A.M., Development and validation of a sport-specific exercise protocol for elite youth soccer players, J Sports Med Phys Fitness, 44, pp. 15-22, (2004); Valquer W., Barros T.L., Sant'anna M., High intensity motion pattern analyses of Brazilian elite soccer players, IV World Congress of Notational Analysis of Sport, (1998); Winkler W.A., A new approach to the video analysis of tactical aspects of soccer, Science and Football, pp. 386-372, (1988); Wisloff U., Castagna C., Helgerud J., Jones R., Hoff J., Strong correlation of maximal squat strength with sprint performance and vertical jump height in elite soccer players, Br J Sports Med, 38, pp. 285-288, (2004); Withers R., Maricic Z., Wasilewski S., Kelly L., Match analysis of Australian professional soccer players, J Hum Mov Stud, 8, pp. 159-176, (1982); Zubillaga A., Gorospe G., Hernandez A., Blanco A., Comparative analysis of the high-intensity activity of soccer players in top level competition, Science and Football VI, pp. 182-185, (2009)","M. Andrzejewski; Faculty of Methodology and Recreation, University School of Physical Education, Poznan, Poland; email: rzejewski@awf.poznan.pl","","","10648011","","","22614138","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-84863695368" "Delfico A.J.; Garrett W.E. Jr.","Delfico, A.J. (6508272471); Garrett W.E., Jr. (7102162248)","6508272471; 7102162248","Mechanisms of injury of the anterior cruciate ligament in soccer players","1998","Clinics in Sports Medicine","17","4","","779","785","6","40","10.1016/S0278-5919(05)70118-6","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0031665769&doi=10.1016%2fS0278-5919%2805%2970118-6&partnerID=40&md5=5ffd4ac2ac7a1d7eb0ad53339dc14ca7","Ridgewood Orthopaedic Group, Ridgewood, NJ 07450, 85 South Maple Avenue, United States","Delfico A.J., Ridgewood Orthopaedic Group, Ridgewood, NJ 07450, 85 South Maple Avenue, United States; Garrett W.E. Jr., Ridgewood Orthopaedic Group, Ridgewood, NJ 07450, 85 South Maple Avenue, United States","Despite the great amount of research that has been focused on the anterior cruciate ligament in recent years, relatively little is known about the exact mechanisms that cause these injuries. By defining the factors that contribute to these injury mechanisms in soccer players, the authors hope to facilitate appropriate training methods and work at preventing these serious injuries.","","accident prevention; anterior cruciate ligament rupture; athlete; biomechanics; deceleration; femur; human; muscle contraction; quadriceps femoris muscle; review; sport injury; tibia; training","Arendt E., Dick R., Knee injury patterns among men and women in collegiate Basketball and Soccer, Am J Sports Med, 23, pp. 694-701, (1995); Arms S., Pope M., Johnson R.J., Et al., The biomechanics of anterior cruciate ligament rehabilitation and reconstruction, Am J Sports Med, 12, pp. 8-18, (1984); Berchuck M., Andriacchi T., Bach B., Et al., Gait adaptations by patients who have deficient anterior cruciate ligaments, J Bone Joint Surg Am, 72, pp. 871-877, (1990); Daniel D., Malcolm L., Losse G., Et al., Instrumented measurement of anterior laxity of the knee, J Bone Joint Surg Am, 66, pp. 725-734, (1984); Draganich L., Vahey J., An in vivo study of anterior cruciate ligament strain induced by quadriceps and hamstring forces, J Ortho Res, 8, pp. 57-63, (1990); Ettlinger C., Johnson R., Shealy J., A method to help reduce the risk of serious knee sprains incurred in alpine skiing, Am J Sports Med, 23, pp. 531-537, (1995); Feagin J., Lambert K., Mechanism of injury and pathology of anterior cruciate ligament injuries, Orthop Clin North Am, 16, pp. 41-45, (1985); Friden T., Erlandsson T., Zatterstrom R., Et al., Compression or distraction of the anterior cruciate injured knee: Variations in injury pattern in contact sports and downhill skiing, Knee Surg Sports Traumatol Arthrorsc, 3, pp. 14-147, (1995); Garrett W., Basic Science of Muscle, (1995); Grood E., Suntay W., Noyes F., Et al., Biomechanics of the knee-extension exercise. Effect of cutting the anterior cruciate ligament, J Bone Joint Surg Am, 66, pp. 725-734, (1984); Hirowaka S., Solomonow M., Lu Y., Et al., Anterior-posterior and rotational displacement of the tibia elicited by quadriceps contraction, Am J Sports Med, 20, pp. 299-306, (1992); Malone T., Hardaker W., Garrett W., Et al., Relationship of gender to ACL injuries in intercollegiate basketball players, J South Orthop Assoc, 2, pp. 36-39, (1992); McNair P., Marshall R., Matheson J., Important features associated with acute anterior cruciate ligament injury, NZ Med J, 103, pp. 537-539, (1990); Nicholas S., Nicholas J., Mechanisms of Injury, (1995); Nisell R., Mechanics of the knee joint: A study of joint and muscle load with clinical applications, Acta Ortho Scand, 216, Suppl 56, pp. 1-42, (1985); Norwood L., Cross M., The intercondylar shelf and the anterior cruciate ligament, Am J Sports Med, 5, (1977); Noyes F., Mooar P., Matthews D., Et al., The symptomatic ACL-deficient knee, J Bone Joint Surg Am, 65, pp. 154-174, (1983); Renstrom P., Arms S., Stanwyck T., Et al., Strain within the anterior cruciate ligament during hamstring and quadriceps activity, Am J Sports Med, 14, pp. 83-87, (1986); Shelbourne K., Nitz P., The O'Donoghue triad revisited, Am J Sports Med, 19, pp. 474-477, (1991); Shoemaker S., Adams D., Daniel D., Et al., Quadriceps/anterior cruciate graft interaction: An in vitro study of joint kinematics and anterior cruciate graft tension, Clin Orthop, 294, pp. 379-390, (1993); Torzilli P., Deng X., Warren R., The effect of joint-compressive load and quadriceps muscle force on knee motion in the intact and anterior cruciate ligament sectioned knee, Am J Sports Med, 22, pp. 105-112, (1994)","","","W.B. Saunders","02785919","","CSMEE","9922901","English","Clin. Sports Med.","Article","Final","","Scopus","2-s2.0-0031665769" "Greig M.","Greig, Matt (23034263700)","23034263700","The influence of soccer-specific activity on the kinematics of an agility sprint","2009","European Journal of Sport Science","9","1","","23","33","10","32","10.1080/17461390802579129","https://www.scopus.com/inward/record.uri?eid=2-s2.0-59249100179&doi=10.1080%2f17461390802579129&partnerID=40&md5=c9aae85b1b5967c71d8b660cc5d432e1","Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom","Greig M., Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom","The aim of this study was to investigate the influence of soccer-specific fatigue on the kinematics of an agility sprint. Ten male professional soccer players (age 24.7±4.4 years, body mass 77.1±8.3 kg) completed an intermittent treadmill protocol replicating the activity profile of match-play, comprising two 45-min halves separated by a 15-min passive half-time interval. Pre-exercise and at 15-min intervals each player completed an agility sprint that consisted of a 180° cutting manoeuvre. Knee joint kinematics in the frontal and sagittal planes were determined for both the support and turning leg using a nine-camera automated motion analysis system operating at 200 Hz. During the penultimate foot contact, knee kinematics were characterized by joint flexion and increased varus alignment. Knee flexion at touchdown decreased significantly (P<0.05) as a function of exercise duration from 57.4±15.5° before exercise to 37.0±5.9° at the end of the second half. The range of joint movement during the knee flexion phase increased significantly during the first half (T45 = 66.6±18.2°) and remained elevated during the second half (T75 = 66.4±18.1° T90 = 65.7±20.4° T105 = 70.2±19.4°) relative to pre-exercise values (51.8±18.8°). During the final foot contact, knee kinematics were also characterized by flexion and increased varus alignment. Knee flexion at touchdown decreased during each half, with the knee angle at the end of the first half (30.6±7.0°) significantly (P = 0.02) straighter than before exercise (39.5±6.3°), and significantly straighter at the end of the second half (30.2±2.9°) than after the half-time interval (37.7±7.8°) or before exercise. The range of knee flexion during ground contact increased significantly during each half. The range of knee varus during flexion changed from a varus displacement during the first 15 min to a valgus displacement thereafter. Peak valgus observed at the end of each half (T45 = 4.7±7.9° T105 = 6.9±7.4°) was significantly (P<0.05) greater than before exercise. The range of valgus movement during knee extension was greatest following the passive half-time interval (T60 = 6.2±7.3°), and tended to increase throughout the second half. Prolonged exposure to soccer-specific intermittent exercise therefore induced changes in knee kinematics that may have implications for injury incidence. The increased varus alignment and time-dependent decrease in knee flexion at touchdown represent two potential mechanisms for increased injury risk.","Biomechanics; Cutting; Fatigue; Soccer; Sprinting","","Bangsbo J., Fitness Training in Football - A Scientific Approach, (1994); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Medicine and Science in Sports and Exercise, 35, pp. 119-127, (2003); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopaedics, 23, pp. 573-578, (2000); Drawer S., Fuller C.W., Propensity for osteoarthritis and lower limb joint pain in retired professional soccer players, British Journal of Sports Medicine, 35, pp. 402-408, (2001); Garrett W.E., International Football and Sports Medicine: Caring for the Soccer Athlete Worldwide, pp. 235-242, (2005); Greig M.P., McNaughton L.R., Lovell R.J., Physiological and mechanical response to soccer-specific intermittent activity and steady-state activity, Research in Sports Medicine, 14, pp. 1-24, (2006); Greig M.P., Walker-Johnson C.J., The influence of soccer-specific fatigue on functional stability, Physical Therapy in Sport, 8, pp. 185-190, (2007); Hawkins R.D., Hulse M.A., Wilkinson C., Hodson A., Gibson M., The association football medical research programme: An audit of injuries in professional football, British Journal of Sports Medicine, 35, pp. 43-47, (2001); Hewett T.E., Myer G.D., Ford K.R., Anterior cruciate ligament injuries in female athletes: Part 1, mechanisms and risk factors, American Journal of Sports Medicine, 34, pp. 299-311, (2006); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, American Journal of Sports Medicine, 33, pp. 492-501, (2005); Houck J., Muscle activation patterns of selected lower extremity muscles during stepping and cutting tasks, Journal of Electromyography and Kinesiology, 13, pp. 545-554, (2003); Jones A.M., Doust J.H., A 1% treadmill grade most accurately reflects the energetic cost of outdoor running, Journal of Sports Sciences, 14, pp. 321-327, (1996); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clinical Biomechanics, 16, pp. 438-445, (2001); McLean S.G., Lipfert S.W., van den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Medicine and Science in Sports and Exercise, 36, pp. 1008-1016, (2004); Nyland J.A., Shapiro R., Caborn D.N.M., Nitz A.J., Malone T.R., The effect of quadriceps femoris, hamstring and placebo eccentric fatigue on knee and ankle dynamics during crossover cutting, Journal of Orthopaedic, Sports and Physical Therapy, 25, pp. 171-184, (1997); Nyland J.A., Shapiro R., Stine R.L., Horn T.S., Ireland M.L., Relationship of fatigued run and rapid stop to ground reaction forces, lower extremity kinematics, and muscle activation, Journal of Orthopaedic, Sports and Physical Therapy, 20, pp. 132-137, (1994); Pinniger G.J., Steele J.R., Groeller H., Does fatigue induced by repeated dynamic efforts affect hamstring muscle function?, Medicine and Science in Sports and Exercise, 32, pp. 647-653, (2000); Rahnama N.T., Reilly T., Lees A., Graham-Smith P., Muscle fatigue induced by exercise simulating the work rate of competitive soccer, Journal of Sports Sciences, 21, pp. 933-942, (2003); Reilly T., Brooks G.A., Exercise and the circadian variation in body temperature measures, International Journal of Sports Medicine, 7, pp. 358-368, (1986); Sigward S.S., Powers C.M., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clinical Biomechanics, 21, pp. 41-48, (2006); Spendiff O., Longford N.T., Winter E.M., Effects of fatigue on the torque-velocity relation in muscle, British Journal of Sports Medicine, 36, pp. 431-435, (2002); Wind W.M., Bergfeld J.A., Parker R.D., Evaluation and treatment of posterior cruciate ligament injuries, American Journal of Sports Medicine, 32, pp. 1765-1775, (2004); Woods C., Hawkins R., Hulse M., Hodson A., The Football Association Medical Research Programme: An audit of injuries in professional football - An analysis of ankle sprains, British Journal of Sports Medicine, 37, pp. 233-238, (2003); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., The Football Association Medical Research Programme: An audit of injuries in professional football - Analysis of hamstring injuries, British Journal of Sports Medicine, 38, pp. 36-41, (2004); Yu B., McClure S.B., Onate J.A., Guskiewicz K.M., Kirkendall T.K., Garrett W.E., Age and gender effects on lower extremity kinematics of youth soccer players in a stop-jump task, American Journal of Sports Medicine, 33, pp. 1356-1364, (2005)","","","","15367290","","","","English","Eur. J. Sport Sci.","Article","Final","","Scopus","2-s2.0-59249100179" "Beese M.E.; Joy E.; Switzler C.L.; Hicks-Little C.A.","Beese, Mark E. (56785955300); Joy, Elizabeth (7004378345); Switzler, Craig L. (56786493600); Hicks-Little, Charlie A. (16174968300)","56785955300; 7004378345; 56786493600; 16174968300","Landing error scoring system differences between single-sport and multi-sport female high school-aged athletes","2015","Journal of Athletic Training","50","8","","806","811","5","27","10.4085/1062-6050-50.7.01","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84939498857&doi=10.4085%2f1062-6050-50.7.01&partnerID=40&md5=4ce217a4ffb3ab907835779cac95b8bd","Department of Exercise and Sport Science, University of Utah, 250 S 1850 E, Salt Lake City, 84112, UT, United States; Department of Family and Preventive Medicine, University of Utah, Salt Lake City, United States; Department of Athletics, Southern Oregon University, Ashland, United States","Beese M.E., Department of Exercise and Sport Science, University of Utah, 250 S 1850 E, Salt Lake City, 84112, UT, United States; Joy E., Department of Family and Preventive Medicine, University of Utah, Salt Lake City, United States; Switzler C.L., Department of Athletics, Southern Oregon University, Ashland, United States; Hicks-Little C.A., Department of Exercise and Sport Science, University of Utah, 250 S 1850 E, Salt Lake City, 84112, UT, United States","Context: Single-sport specialization (SSS) is becoming more prevalent in youth athletes. Deficits in functional movement have been shown to predispose athletes to injury. It is unclear whether a link exists between SSS and the development of functional movement deficits that predispose SSS athletes to an increased risk of knee injury. Objective: To determine whether functional movement deficits exist in SSS athletes compared with multi-sport (M-S) athletes. Design: Cross-sectional study. Setting: Soccer practice fields. Patients or Other Participants: A total of 40 (21 SSS [age =15.05 ± 1.2 years], 19 M-S [age=15.32 ± 1.2 years]) female high school athlete volunteers were recruited through local soccer clubs. All SSS athletes played soccer. Intervention(s): Participants were grouped into 2 categories: SSS and M-S. All participants completed 3 trials of the standard Landing Error Scoring System (LESS) jump-landing task. They performed a double-legged jump from a 30-cm platform, landing on a rubber mat at a distance of half their body height. Upon landing, participants immediately performed a maximal vertical jump. Main Outcome Measure(s): Values were assigned to each trial using the LESS scoring criteria. We averaged the 3 scored trials and then used a Mann-Whitney U test to test for differences between groups. Participant scores from the jumplanding assessment for each group were also placed into the 4 defined LESS categories for group comparison using a Pearson χ2 test. The a level was set a priori at.05. Results: Mean scores were 6.84 ± 1.81 for the SSS group and 6.07 ± 1.93 for the M-S group. We observed no differences between groups (z =-1.44, P =.15). A Pearson χ2 analysis revealed that the proportions of athletes classified as having excellent, good, moderate, or poor LESS scores were not different between the SSS and M-S groups (χ23 = 1.999, P =.57). Conclusions: Participation in soccer alone compared with multiple sports did not affect LESS scores in adolescent female soccer players. However, the LESS scores indicated that most female adolescent athletes may be at an increased risk for knee injury, regardless of the number of sports played. © by the National Athletic Trainers' Association, Inc.","Injuries; Knee; Movement assessment","Adolescent; Athletic Injuries; Biomechanical Phenomena; Cross-Sectional Studies; Female; Humans; Knee Injuries; Movement; Soccer; Sports; Young Adult; adolescent; biomechanics; cross-sectional study; female; human; injuries; knee injury; movement (physiology); pathophysiology; physiology; soccer; sport; sport injury; young adult","Malina R.M., Early sport specialization: Roots, effectiveness, risks, Curr Sports Med Rep., 9, 6, pp. 364-371, (2010); Hecimovich M., Sport specialization in youth: A literature review, J Am Chiropract Assoc., 41, 4, pp. 32-41, (2004); Belluck P., Parents try to reclaim their children's time, New York Times, (2000); DiFiori J.P., Evaluation of overuse injuries in children and adolescents, Curr Sports Med Rep., 9, 6, pp. 372-378, (2010); Current comment from the American College of Sports Medicine: August 1993. The prevention of sport injuries of children and adolescents, Med Sci Sports Exerc., 25, 8, pp. 1-7, (1993); Pill S.G., Flynn J.M., Ganley T.J., Managing and preventing overuse injuries in young athletes, J Musculoskelet Med., 20, pp. 434-442, (2003); Gaines S., Child's play? Kids, sports, and injury, Minn Med., 83, 6, pp. 18-25, (2000); Intensive training and sports specialization in young athletes, Pediatrics., 106, 1, pp. 154-157, (2000); Bompa T., Calcina O., From Childhood to Champion Athlete, (1995); Murphy C., Functional Movement Screening of NCAA Division II Male and Female Athletes, (2001); Ivkovic A., Franic M., Bojanic I., Pecina M., Overuse injuries in female athletes, Croat Med J., 48, 6, pp. 767-778, (2007); Yang J., Tibbetts A.S., Covassin T., Cheng G., Nayar S., Heiden E., Epidemiology of overuse and acute injuries among competitive collegiate athletes, J Athl Train., 47, 2, pp. 198-204, (2012); Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in National Collegiate Athletic Association basketball and soccer: A 13-year review, Am J Sports Med., 33, 4, pp. 524-530, (2005); Ma S., Mack C.D., Polissar N.L., Levy M.R., Dow S.P., O'Kane J.W., Soccer injuries in female youth players: Comparison of injury surveillance by certified athletic trainers and internet, J Athl Train., 45, 3, pp. 238-242, (2010); Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer: NCAA data and review of literature, Am J Sports Med., 23, 6, pp. 694-701, (1995); Murphy D.F., Connolly D.A., Beynnon B.D., Risk factors for lower extremity injury: A review of the literature, Br J Sports Med., 37, 1, pp. 13-29, (2003); Padua D.A., Marshall S.W., Boling M.C., Thigpen C.A., Garrett W.E., Beutler A.I., The Landing Error Scoring System (LESS) is a valid and reliable clinical assessment tool of jump-landing biomechanics: The JUMP-ACL study, Am J Sports Med., 37, 10, pp. 1996-2002, (2009); DiStefano L.J., Padua D.A., DiStefano M.J., Marshall S.W., The Landing Error Scoring System predicts non-contact injury in youth soccer players, Med Sci Sports Exerc., 41, 5, (2009); DiStefano L.J., Padua D.A., DiStefano M.J., Marshall S.W., Influence of age, sex, technique, and exercise program on movement patterns after an anterior cruciate ligament injury prevention program in youth soccer players, Am J Sports Med., 37, 3, pp. 495-505, (2009); Beutler A., De La Motte S., Marshall S., Padua D., Boden B., Muscle strength and qualitative jump-landing differences in male and female military cadets: The JUMP-ACL study, J Sports Sci Med., 8, pp. 663-671, (2009); Padua D.A., Boling M.C., DiStefano L.J., Onate J.A., Beutler A.I., Marshall S.W., Reliability of the Landing Error Scoring System-real time, a clinical assessment tool of jump-landing biomechanics, J Sport Rehabil., 20, 2, pp. 145-156, (2011); Sadoghi P., Von Keudell A., Vavken P., Effectiveness of anterior cruciate ligament injury prevention training programs, J Bone Joint Surg Am., 94, 9, pp. 769-776, (2012); Valovich McLeod T.C., Decoster L.C., Loud K.J., Et al., National Athletic Trainers' Association position statement: Prevention of pediatric overuse injuries, J Athl Train., 46, 2, pp. 206-220, (2011); McGuine T., Sports injuries in high school athletes: A review of injury-risk and injury-prevention research, Clin J Sport Med., 16, 6, pp. 488-499, (2006); Friel N.A., Chu C.R., The role of ACL injury in the development of posttraumatic knee osteoarthritis, Clin Sports Med., 32, 1, pp. 1-12, (2013)","C.A. Hicks-Little; Department of Exercise and Sport Science, University of Utah, Salt Lake City, 250 S 1850 E, 84112, United States; email: charlie.hickslittle@hsc.utah.edu","","National Athletic Trainers' Association Inc.","10626050","","JATTE","26196703","English","J. Athl. Train.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-84939498857" "Filter A.; Olivares-Jabalera J.; Santalla A.; Morente-Sánchez J.; Robles-Rodríguez J.; Requena B.; Loturco I.","Filter, Alberto (57211533760); Olivares-Jabalera, Jesús (57219375591); Santalla, Alfredo (6701840562); Morente-Sánchez, Jaime (55237922200); Robles-Rodríguez, Jose (54684813600); Requena, Bernardo (8268059700); Loturco, Irineu (38661433700)","57211533760; 57219375591; 6701840562; 55237922200; 54684813600; 8268059700; 38661433700","Curve Sprinting in Soccer: Kinematic and Neuromuscular Analysis","2020","International Journal of Sports Medicine","41","11","","744","750","6","25","10.1055/a-1144-3175","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092748095&doi=10.1055%2fa-1144-3175&partnerID=40&md5=90b65ac41f34770a68ba59eca8226cbd","Sports and Computer Department, Universidad Pablo de Olavide, Sevilla, Spain; Research and Development Department, Football Science Insititute, Granada, Spain; Physical and Sports Education Department Universidad de Granada, Sport and Health University Research Institute (IMUDS), Granada, Spain; Physical Education and Sports Department, Universidad de Granada, Granada, Spain; Faculty of Education, Psychology and Sports Science, University of Huelva, Huelva, Spain; Nar - Nucleus of High Performance in Sport, Sport Science, São Paulo, Brazil; Sport Science, University of South Wales, Pontypridd, United Kingdom; Department of Human Movement Sciences, Federal University of Sao Paulo, Sao Paulo, Brazil","Filter A., Sports and Computer Department, Universidad Pablo de Olavide, Sevilla, Spain, Research and Development Department, Football Science Insititute, Granada, Spain, Physical Education and Sports Department, Universidad de Granada, Granada, Spain; Olivares-Jabalera J., Research and Development Department, Football Science Insititute, Granada, Spain, Physical and Sports Education Department Universidad de Granada, Sport and Health University Research Institute (IMUDS), Granada, Spain; Santalla A., Sports and Computer Department, Universidad Pablo de Olavide, Sevilla, Spain, Research and Development Department, Football Science Insititute, Granada, Spain; Morente-Sánchez J., Research and Development Department, Football Science Insititute, Granada, Spain; Robles-Rodríguez J., Faculty of Education, Psychology and Sports Science, University of Huelva, Huelva, Spain; Requena B., Research and Development Department, Football Science Insititute, Granada, Spain; Loturco I., Nar - Nucleus of High Performance in Sport, Sport Science, São Paulo, Brazil, Sport Science, University of South Wales, Pontypridd, United Kingdom, Department of Human Movement Sciences, Federal University of Sao Paulo, Sao Paulo, Brazil","Sprinting in curvilinear trajectories is an important soccer ability, corresponding to ~85% of the actions performed at maximum velocity in a soccer league. We compared the neuromuscular behavior and foot contact-time between outside leg and inside leg during curve sprinting to both sides in soccer players. Nine soccer players (age=23±4.12 years) performed: 3×Sprint linear, 3×Sprint right curve, and 3×Sprint left curve. An ANOVA with repeated measures was used to compare the differences between inside and outside leg, and Cohen's d was used to calculate the effect-size. Considering the average data, the performance classification (from best to worst) was as follows: 1. Curve good side (2.45±0.11 s), 2. Linear (2.47±0.13 s), and 3. Curve weak side (2.56±0.17 s). Comparing linear with curve sprinting, inside leg recorded significant differences (good and weak; effect size=1.20 and 2, respectively); in contrast, for outside leg, there were no significant differences (good and weak; effect size=0.30 and 0.49, respectively). Electromyography activity showed significant differences (p≤0.05) during curve sprinting between outside (higher in biceps femoris and gluteus medius) and inside leg (higher activity in semitendinosus and adductor). In summary, inside and outside leg play different roles during curved sprints, but inside leg is more affected by the change from straight to curve sprint. © 2020 American Institute of Physics Inc.. All rights reserved.","change of direction; cutting; football; neuromechanical; physical test","Biomechanical Phenomena; Electromyography; Exercise Test; Foot; Humans; Leg; Motor Skills; Muscle, Skeletal; Running; Soccer; Time and Motion Studies; adult; analysis of variance; article; biceps femoris muscle; contact time; controlled study; effect size; electromyography; foot; football; gluteus medius muscle; human; semitendinous muscle; soccer player; young adult; biomechanics; exercise test; leg; motor performance; physiology; running; skeletal muscle; soccer; task performance","Marios C.A., Smilios I., Sotiropoulos K., Et al., Effects of resistance training on the physical capacities of adolescent soccer players, J Strength Cond Res, 20, pp. 783-791, (2006); Prieske O., Muehlbauer T., Borde R., Et al., Neuromuscular and athletic performance following core strength and training in elite youth soccer: Role of instability, Scand J Med Sci Sports, 26, pp. 48-56, (2016); Ade J., Fitzpatrick J., Bradley P.S., High-intensity efforts in elite soccer matches and associated movement pattern, technical skills and tactical actions. Information for position-specific training, J Sports Sci, 34, pp. 2205-2214, (2016); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, J Sports Sci, 21, pp. 519-528, (2003); Suarez Moreno-Arrones L., Torreno N., Requena B., Et al., Match play activity profile in professional soccer players during official games and the relationship between external and internal load, J Sports Med Phys Fitness, 55, pp. 1417-1422, (2015); Faude O., Koch T., Meyer T., Straight sprinting is the most frequent action in goal situations in professional football, J Sports Sci, 30, pp. 625-631, (2017); Buchheit M., Samonizo P., Glynn J., Et al., Mechanical determinants of acceleration and maximal sprinting speed in highly trained young soccer players, J Sport Sci, 32, pp. 1906-1913, (2014); Morin J.B., Petrakos G., Jimenez-Reyes P., Et al., Very heavy sled training for improving horizontal force output in soccer players, Int J Sports Physiol Perform, 12, pp. 840-844, (2017); Brughelli M., Cronin J., Levin G., Et al., Understanding change of direction ability in soccer: A review of resistance training studies, Sports Med, 38, pp. 1045-1063, (2008); Young W., James R., Montgomery I., Is muscle power related to running speed with change of direction?, J Sports Med Phys Fitness, 42, pp. 282-288, (2002); Filter A., Olivares J., Santalla A., Et al., New curve sprint test for soccer player: Reliability and relationship with linear sprint, J Sports Sci, pp. 1-6, (2019); Caldbeck P., Contextual Sprinting in Football [DSportExSci Thesis]., (2019); Fitzpatrick J.F., Linsley A., Musham C., Running the curve: A preliminary investigation into curved sprinting during football match-play, Sport Performance & Science Reports, 55, pp. 1-3, (2019); Brice P., Smith N., Dyson R., Frequency of curvilinear motion during competitive soccer play. Communications to the Fourth Congress of Science and Football, J Sports Sci, 22, (2004); Brice P., Smith N., Dyson R., Curved running in soccer: Kinematics differences between the inside and outside limbs, Scientific Proceedings of Xxvi International Conference on Biomechanics in Sports, pp. 624-627, (2008); Churchill S., Salo A., Trewartha G., The effect of the bend on technique and performance during maximal effort sprinting, Sports Biomech, 14, pp. 106-121, (2015); Chang Y., Kram R., Limitations to maximum running speed on flat curve, J Exp Biol, 210, pp. 971-982, (2007); Judson L.J., Churchill S.M., Barnes A., Et al., Horizontal force production and multi-segment foot kinematic during acceleration phase of bend sprinting, Scan J Med Sci Sports, 29, pp. 1563-1571, (2019); Smith N., Dyson R., Hate T., Lower extremity muscular adaptations to curvilinear motion in soccer, J Hum Mov Studies, 33, pp. 139-159, (1997); Smith N., Dyson R., Hale T., Et al., Contributions of the inside and outside leg to maintenance of curvilinear motion on a natural surface, Gait Posture, 24, pp. 453-458, (2006); Rand M., Ohtsuki T., EMG analysis of lower limb muscle in humans during quick change in running directions, Gait Posture, 12, pp. 169-183, (2000); Harriss D.J., MacSween A., Atkinson G., Ethical standards in sport and exercise science research: 2020 update, Int J Sports Med, 40, pp. 813-817, (2019); Banos O., Moral-Munoz J.A., Diaz-Reyes I., Et al., MDurance: A novel mobile health system to support trunk endurance assessment, Sensors, 15, pp. 13159-13183, (2015); Albertus-Kajee Y., Tucker R., Derman W., Et al., Alternative methods of normalising EMG during running, J Electromyogr Kinesiol, 21, pp. 579-586, (2011); Hermens H., Freriks M., Disselhorst-Klug-Klug M., Et al., Development of recommendations for SEMG sensors and sensor placement procedures, J Electromyogr Kinesiol, 10, pp. 361-374, (2000); Miyamoto A., Takeshita T., Yanagiya T., Differences in sprinting performance and kinematics between preadolescent boys who are force/mid and rear foot strikers, PLoS One, 13, (2018); Hopkins W., Marshall S., Batterham A., Et al., Progressive statistics for studies in sports medicine and exercise science, Med Sci Sports Exerc, 41, pp. 3-13, (2009); Ohnuma H., Tachi M., Kumano A., Et al., How to maintain maximal straight path running speed on a curved path in sprint events, J Hum Kinet, 62, pp. 23-31, (2018); Churchill S., Trewartha G., Bezodis I., Et al., Force production during maximal effort bend sprinting: Theory vs. reality, Scand J Med Sci Sports, 26, pp. 1171-1179, (2016); Churchill S., Trewartha G., Salo A.I., Bend sprinting performance: New insights into the effect of running lane, Sports Biomech, 18, pp. 437-447, (2018); Weyand P., Sandell R., Prime D., Et al., The biological limits to running speed are imposed from the ground up, J Appl Physiol (1985), 108, pp. 950-961, (2010); Besier T., Lloyd D., Cochrane J., Et al., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1168-1175, (2001); Besier T., Lloyd D., Ackland T., Muscle activation strategies at knee during running and cutting maneuvers, Med Sci Sports Exerc, 35, pp. 119-127, (2000); Dos Santos T., Thomas C., Comfort P., Et al., The effect of angle and velocity on change of direction biomechanics: An angle-velocity trade-off, Sports Med, 48, pp. 2235-2253, (2018); Dos Santos T., Thomas C., Jones P.A., Et al., TMechanical determinant of faster change of direction speed performance in male athletes, J Strength Cond Res, 31, pp. 696-705, (2017)","A. Filter; Cañada Rosal, Sevilla, C/ Francia, 4, 41439, Spain; email: albertofr_91@hotmail.com","","Georg Thieme Verlag","01724622","","IJSMD","32492732","English","Int. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85092748095" "Beato M.; Drust B.","Beato, Marco (56254437100); Drust, Barry (8076138400)","56254437100; 8076138400","Acceleration intensity is an important contributor to the external and internal training load demands of repeated sprint exercises in soccer players","2021","Research in Sports Medicine","29","1","","67","76","9","24","10.1080/15438627.2020.1743993","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85082432732&doi=10.1080%2f15438627.2020.1743993&partnerID=40&md5=0f56165fa278f51e97b56f9a890788b1","School of Health and Sports Sciences, University of Suffolk, Ipswich, United Kingdom; School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, United Kingdom","Beato M., School of Health and Sports Sciences, University of Suffolk, Ipswich, United Kingdom; Drust B., School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, United Kingdom","The aim of this study was to evaluate the effect of acceleration on the external and internal load during repeated sprint exercises (RSE). This study used a cross-over design. Sixteen soccer players were included (mean ± SDs: age 21 ± 1 years; weight 71.1 ± 7.7 kg). RSE was 3 sets of 7 × 30 m sprints with 25 s and 3 min recovery between sprints and sets, respectively. RSE was performed using two protocols requiring either 10 m maximal acceleration (2.12 m.s−2 [RSE-MA]) or 10 m submaximal acceleration (1.66 m.s−2 [RSE-SA]). Global positioning systems (10 Hz; STATSports, Viper) were utilized to collect: high speed running (HSR), dynamic stress load (DSL), Heart Rate (HR) peak, time >85% HR peak, respiratory (RPEres) and muscular (RPEmus) rating of perceived exertion. RSE-MA induced higher load than RSE-SA in HSR (p = 0.037, ES = 0.20), DSL (p = 0.027, ES = 0.43), HR peak (p = 0.025, ES = 0.47), Time >85% HR peak (p = 0.028, ES = 1.11), RPEres (p = 0.001, ES = 1.10), and RPEmus (p = 0.001, ES = 0.73). This study shows that a different acceleration intensity in a RSE (MA vs. SA) impacts external and internal training load parameters. © 2020 Informa UK Limited, trading as Taylor & Francis Group.","Football; GPS; performance; team sports; training","Acceleration; Athletic Performance; Biomechanical Phenomena; Body Height; Body Mass Index; Cross-Over Studies; Geographic Information Systems; Heart Rate; Humans; Male; Muscle, Skeletal; Respiratory Rate; Running; Soccer; Young Adult; acceleration; adult; article; controlled study; exercise; football; global positioning system; heart rate; human; running; soccer player; stress; team sport; young adult; athletic performance; biomechanics; body height; body mass; breathing rate; crossover procedure; geographic information system; male; physiology; skeletal muscle; soccer","Akenhead R., French D., Thompson K.G., Hayes P.R., The physiological consequences of acceleration during shuttle running, International Journal of Sports Medicine, 36, 4, pp. 302-307, (2015); Akenhead R., Nassis G.P., Training load and player monitoring in high-level football: Current practice and perceptions, International Journal of Sports Physiology and Performance, 11, 5, pp. 587-593, (2016); Akubat I., Barrett S., Abt G., Integrating the internal and external training loads in soccer, International Journal of Sports Physiology and Performance, 9, 3, pp. 457-462, (2014); Azcarate U., Los Arcos A., Jimenez-Reyes P., Yanci J., Are acceleration and cardiovascular capacities related to perceived load in professional soccer players?, Research in Sports Medicine, 28, 1, pp. 27-41, (2019); Beato M., Reliability of internal and external load parameters in 6 a-side and 7 a-side recreational football for health, Sport Sciences for Health, 14, 3, pp. 709-714, (2018); Beato M., Coratella G., Stiff A., Dello Iacono A., The validity and between-unit variability of GNSS units (STATSports Apex 10 and 18 Hz) for measuring distance and peak speed in team sports, Frontiers in Physiology, 9, September, (2018); Beato M., de Keijzer K.L., Carty B., Connor M., Monitoring fatigue during intermittent exercise with accelerometer-derived metrics, Frontiers in Physiology, 10, June, (2019); Beato M., Devereux G., Stiff A., Validity and reliability of global positioning system units (STATSports Viper) for measuring distance and peak speed in sports, Journal of Strength and Conditioning Research, 32, 10, pp. 2831-2837, (2018); Beato M., Jamil M., Devereux G., Reliability of internal and external load parameters in recreational football (Soccer) for health, Research in Sports Medicine (Print), 26, 2, pp. 244-250, (2017); Beato M., Jamil M., Devereux G., The reliability of technical and tactical tagging analysis conducted by a semi-automatic VTS in soccer, Journal of Human Kinetics, 62, 1, pp. 103-110, (2018); Bishop D., Girard O., Mendez-Villanueva A., Repeated-sprint ability - part II: Recommendations for training, Sports Medicine, 41, 9, pp. 741-756, (2011); Buchheit M., Al Haddad H., Simpson B.M., Palazzi D., Bourdon P.C., Di Salvo V., Mendez-Villanueva A., Monitoring accelerations with GPS in football: Time to slow down?, International Journal of Sports Physiology and Performance, 9, 3, pp. 442-445, (2014); Buglione A., Di Prampero P.E., The energy cost of shuttle running, European Journal of Applied Physiology, 113, 6, pp. 1535-1543, (2013); Castillo D., Raya-Gonzalez J., Manuel Clemente F., Yanci J., The influence of youth soccer players’ sprint performance on the different sided games’ external load using GPS devices, Research in Sports Medicine (Print), pp. 1-12, (2019); Cummins C., Orr R., Connor H.O., Global Positioning Systems (GPS) and microtechnology sensors in team sports: A systematic review, Sports Medicine, 43, 10, pp. 1025-1042, (2013); Di Prampero P., Osgnach C., Metabolic power in team sports - part 1: An update, International Journal of Sports Medicine, 39, 8, pp. 581-587, (2018); Fanchini M., Ferraresi I., Modena R., Schena F., Coutts A.J., Impellizzeri F.M., Use of CR100 scale for session rating of perceived exertion in soccer and Iis interchangeability with the CR10, International Journal of Sports Physiology and Performance, 11, 3, pp. 388-392, (2016); Fessi M.S., Farhat F., Dellal A., Malone J.J., Moalla W., Straight-line and change-of-direction intermittent running in professional soccer players, International Journal of Sports Physiology and Performance, 13, 5, pp. 562-567, (2018); Gaudino P., Iaia F., Alberti G., Strudwick A., Atkinson G., Gregson W., Monitoring training in elite soccer players: Systematic bias between running speed and metabolic power data, International Journal of Sports Medicine, 34, 11, pp. 963-968, (2013); Gaudino P., Iaia F.M., Alberti G., Hawkins R.D., Strudwick A.J., Gregson W., Systematic bias between running speed and metabolic power data in elite soccer players: Influence of drill type, International Journal of Sports Medicine, 35, 6, pp. 489-493, (2014); Hader K., Mendez-Villanueva A., Palazzi D., Ahmaidi S., Buchheit M., Metabolic power requirement of change of direction speed in young soccer players: Not all is what it seems, PloS One, 11, 3, (2016); Hatamoto Y., Yamada Y., Fujii T., Higaki Y., Kiyonaga A., Tanaka H., A novel method for calculating the energy cost of turning during running, Open Access Journal of Sports Medicine, 4, pp. 117-122, (2013); Hopkins W.G., Marshall S.W., Batterham A.M., Hanin J., Progressive statistics for studies in sports medicine and exercise science, Medicine and Science in Sports and Exercise, 41, 1, pp. 3-13, (2009); Hoppe M.W., Baumgart C., Polglaze T., Freiwald J., Validity and reliability of GPS and LPS for measuring distances covered and sprint mechanical properties in team sports, PloS One, 13, 2, (2018); Impellizzeri F.M., Marcora S.M., Coutts A.J., Internal and external training load: 15 years on, International Journal of Sports Physiology and Performance, 14, 2, pp. 270-273, (2019); Impellizzeri F.M., Rampinini E., Coutts A.J., Sassi A., Marcora S.M., Use of RPE-based training load in soccer, Medicine and Science in Sports and Exercise, 36, 6, pp. 1042-1047, (2004); Impellizzeri F.M., Rampinini E., Marcora S.M., Physiological assessment of aerobic training in soccer, Journal of Sports Sciences, 23, 6, pp. 583-592, (2005); Jaspers A., Brink M.S., Probst S.G.M., Frencken W.G.P., Helsen W.F., Relationships between training load indicators and training outcomes in professional soccer, Sports Medicine, 47, 3, pp. 533-544, (2017); Jimenez-Reyes P., Pareja-Blanco F., Cuadrado-Penafiel V., Morcillo J.A., Parraga J.A., Gonzalez-Badillo J.J., Mechanical, metabolic and perceptual response during sprint training, International Journal of Sports Medicine, 37, 10, pp. 807-812, (2016); Krustrup P., Mohr M., Amstrup T., Rysgaard T., Johansen J., Steensberg A., Pedersen P.K., Bangsbo J., The yo-yo intermittent recovery test: Physiological response, reliability, and validity, Medicine and Science in Sports and Exercise, 35, 4, pp. 697-705, (2003); Lockie R.G., Murphy A.J., Schultz A.B., Jeffriess M.D., Callaghan S.J., Influence of sprint acceleration stance kinetics on velocity and step kinematics in field sport athletes, Journal of Strength and Conditioning Research, 27, 9, pp. 2494-2503, (2013); Los Arcos A., Mendez-Villanueva A., Yanci J., Martinez-Santos R., Respiratory and muscular perceived exertion during official games in professional soccer players, International Journal of Sports Physiology and Performance, 11, 3, pp. 301-304, (2016); Mohr M., Krustrup P., Bangsbo J., Fatigue in soccer: A brief review, Journal of Sports Sciences, 23, 6, pp. 593-599, (2005); Osgnach C., Poser S., Bernardini R., Rinaldo R., Di Prampero P.E., Energy cost and metabolic power in elite soccer: A new match analysis approach, Medicine and Science in Sports and Exercise, 42, 1, pp. 170-178, (2010); Rago V., Brito J., Figueiredo P., Costa J., Barreira D., Krustrup P., Rebelo A., Methods to collect and interpret external training load using microtechnology incorporating GPS in professional football: A systematic review, Research in Sports Medicine (Print), pp. 1-22, (2019); Svensson M., Drust B., Testing soccer players, Journal of Sports Sciences, 23, 6, pp. 601-618, (2005); Thorpe R.T., Atkinson G., Drust B., Gregson W., Monitoring fatigue status in elite team-sport athletes: Implications for practice, International Journal of Sports Physiology and Performance, 12, pp. 27-34, (2017); Thorpe R.T., Strudwick A.J., Buchheit M., Atkinson G., Drust B., Gregson W., Tracking morning fatigue status across in-season training weeks in elite soccer players, International Journal of Sports Physiology and Performance, 11, 7, pp. 947-952, (2016); Vanrenterghem J., Nedergaard N.J., Robinson M.A., Drust B., Training load monitoring in team sports: A novel framework separating physiological and biomechanical load-adaptation pathways, Sports Medicine (Auckland, N.Z.), 47, 11, pp. 2135-2142, (2017); Varley M.C., Fairweather I.H., Aughey R.J., Validity and reliability of GPS for measuring instantaneous velocity during acceleration, deceleration, and constant motion, Journal of Sports Sciences, 30, 2, pp. 121-127, (2012); Young D., Mourot L., Beato M., Coratella G., The match heart rate and running profile of elite under-21 hurlers during competitive match-play, Journal of Strength and Conditioning Research, 32, 10, pp. 2925-2933, (2018); Zamparo P., Bolomini F., Nardello F., Beato M., Energetics (and kinematics) of short shuttle runs, European Journal of Applied Physiology, 115, 9, pp. 1985-1994, (2015); Zamparo P., Pavei G., Nardello F., Bartolini D., Monte A., Minetti A.E., Mechanical work and efficiency of 5 + 5 m shuttle running, European Journal of Applied Physiology, 116, 10, pp. 1911-1919, (2016); Zamparo P., Zadro I., Lazzer S., Beato M., Sepulcri L., Energetics of shuttle runs: The effects of distance and change of direction, International Journal of Sports Physiology and Performance, 9, 6, pp. 1033-1039, (2014)","M. Beato; School of Health and Sports Sciences, University of Suffolk, Ipswich, United Kingdom; email: M.Beato@uos.ac.uk","","Bellwether Publishing, Ltd.","15438627","","RSMEC","32200649","English","Res. Sports Med.","Article","Final","","Scopus","2-s2.0-85082432732" "Reynolds B.B.; Patrie J.; Henry E.J.; Goodkin H.P.; Broshek D.K.; Wintermark M.; Druzgal T.J.","Reynolds, Bryson B. (57190023733); Patrie, James (35458182900); Henry, Erich J. (57190019887); Goodkin, Howard P. (6603023019); Broshek, Donna K. (6602887353); Wintermark, Max (7003404861); Druzgal, T. Jason (6505913931)","57190023733; 35458182900; 57190019887; 6603023019; 6602887353; 7003404861; 6505913931","Effects of sex and event type on head impact in collegiate soccer","2017","Orthopaedic Journal of Sports Medicine","5","4","2325967117701708","","","","33","10.1177/2325967117701708","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019957378&doi=10.1177%2f2325967117701708&partnerID=40&md5=1d9c33bde15dd75f8528c886f3406f10","Institute of Imaging Science, Vanderbilt University Medical Center, Nashville, TN, United States; Public Health Sciences, University of Virginia, Charlottesville, VA, United States; Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, VA, United States; Department of Neurology, University of Virginia, Charlottesville, VA, United States; Department of Psychiatry and Neurobehavioral Sciences, University of Virginia, Charlottesville, VA, United States; Department of Radiology, Stanford University, Stanford, CA, United States; University of Virginia, University of Virginia Health System, Charlottesville, VA, United States","Reynolds B.B., Institute of Imaging Science, Vanderbilt University Medical Center, Nashville, TN, United States, University of Virginia, University of Virginia Health System, Charlottesville, VA, United States; Patrie J., Public Health Sciences, University of Virginia, Charlottesville, VA, United States, University of Virginia, University of Virginia Health System, Charlottesville, VA, United States; Henry E.J., Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, VA, United States, University of Virginia, University of Virginia Health System, Charlottesville, VA, United States; Goodkin H.P., Department of Neurology, University of Virginia, Charlottesville, VA, United States, University of Virginia, University of Virginia Health System, Charlottesville, VA, United States; Broshek D.K., Department of Psychiatry and Neurobehavioral Sciences, University of Virginia, Charlottesville, VA, United States, University of Virginia, University of Virginia Health System, Charlottesville, VA, United States; Wintermark M., Department of Radiology, Stanford University, Stanford, CA, United States, University of Virginia, University of Virginia Health System, Charlottesville, VA, United States; Druzgal T.J., Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, VA, United States, University of Virginia, University of Virginia Health System, Charlottesville, VA, United States","Background: The effects of head impact in sports are of growing interest for clinicians, scientists, and athletes. Soccer is the most popular sport worldwide, but the burden of head impact in collegiate soccer is still unknown. Purpose: To quantify head impact associated with practicing and playing collegiate soccer using wearable accelerometers. Study Design: Descriptive epidemiological study. Methods: Mastoid patch accelerometers were used to quantify head impact in soccer, examining differences in head impact as a function of sex and event type (practice vs game). Seven female and 14 male collegiate soccer players wore mastoid patch accelerometers that measured head impacts during team events. Data were summarized for each athletic exposure, and statistical analyses evaluated the mean number of impacts, mean peak linear acceleration, mean peak rotational acceleration, and cumulative linear and rotational acceleration, each grouped by sex and event type. Results: There were no differences in the frequency or severity of head impacts between men’s and women’s soccer practices. For men’s soccer, games resulted in 285% more head impacts than practices, but there were no event-type differences in mean impact severity. Men’s soccer games resulted in more head impacts than practices across nearly all measured impact severities, which also resulted in men’s soccer games producing a greater cumulative impact burden. Conclusion: Similar to other sports, men’s soccer games have a greater impact burden when compared with practices, and this effect is driven by the quantity rather than severity of head impacts. In contrast, there were no differences in the quantity or severity of head impacts in men’s and women’s soccer practices. These data could prompt discussions of practical concern to collegiate soccer, such as understanding sex differences in head impact and whether games disproportionately contribute to an athlete’s head impact burden. © The Author(s) 2017.","Accelerometer; Biomechanics (general); Football (soccer); Head injuries/concussion; Subconcussion","acceleration; accelerometry; adult; Article; biomechanics; body burden; concussion; female; football; head injury; health impact assessment; human; male; priority journal; sex difference; soccer player; young adult","Bailes J.E., Petraglia A.L., Omalu B.I., Nauman E., Talavage T., Role of subconcussion in repetitive mild traumatic brain injury, J Neurosurg, 119, pp. 1235-1245, (2013); Baugh C.M., Kiernan P.T., Kroshus E., Et al., Frequency of head impact–related outcomes by position in NCAA Division I collegiate football players, J Neurotrauma, 32, pp. 314-326, (2015); Beckwith J.G., Greenwald R.M., Chu J.J., Et al., Head impact exposure sustained by football players on days of diagnosed concussion, Med Sci Sports Exerc, 45, pp. 737-746, (2013); 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Delaney J.S., Lacroix V.J., Leclerc S., Johnston K.M., Concussions among university football and soccer players, Clin J Sport Med, 12, pp. 331-338, (2002); Eckner J.T., Sabin M., Kutcher J.S., Broglio S.P., No evidence for a cumulative impact effect on concussion injury threshold, J Neurotrauma, 28, pp. 2079-2090, (2011); Gessel L.M., Fields S.K., Collins C.L., Dick R.W., Comstock R.D., Concussions among United States high school and collegiate athletes, J Athl Train, 42, pp. 495-503, (2007); Guskiewicz K.M., McCrea M., Marshall S.W., Et al., Cumulative effects associated with recurrent concussion in collegiate football players: The NCAA Concussion Study, JAMA, 290, pp. 2549-2555, (2003); Gutierrez G.M., Conte C., Lightbourne K., The relationship between impact force, neck strength, and neurocognitive performance in soccer heading in adolescent females, Pediatr Exerc Sci, 26, pp. 33-40, (2014); Gysland S.M., Mihalik J.P., Register-Mihalik J.K., Trulock S.C., Shields E.W., Guskiewicz K.M., The relationship between subconcussive impacts and concussion history on clinical measures of neurologic function in collegiate football players, Ann Biomed Eng, 40, pp. 14-22, (2012); Hanlon E.M., Bir C.A., Real-time head acceleration measurement in girls’ youth soccer, Med Sci Sports Exerc, 44, pp. 1102-1108, (2012); Hootman J.M., Dick R., Agel J., Epidemiology of collegiate injuries for 15 sports: Summary and recommendations for injury prevention initiatives, J Athl Train, 42, pp. 311-319, (2007); Huber P.J., The behavior of maximum likelihood estimates under nonstandard conditions, Proceedings of the Fifth Berkeley Symposium on Mathematical Statistics and Probability, 1, pp. 221-233, (1967); Johnson B.D., Neuberger T., Gay M., Hallett M., Slobounov S., Effects of subconcussive head trauma on the default mode network of the brain, J Neurotrauma, 31, pp. 1907-1913, (2014); Kerr Z.Y., Hayden R., Dompier T.P., Cohen R., Association of equipment worn and concussion injury rates in National Collegiate Athletic Association football practices, Am J Sports Med, 43, pp. 1134-1141, (2015); King D., Hume P., Gissane C., Brughelli M., Clark T., The influence of head impact threshold for reporting data in contact and collision sports: Systematic review and original data analysis, Sports Med, 46, pp. 151-169, (2016); Koerte I.K., Ertl-Wagner B., Reiser M., Zafonte R., Shenton M.E., White matter integrity in the brains of professional soccer players without a symptomatic concussion, JAMA, 308, pp. 1859-1861, (2012); Koerte I.K., Lin A.P., Muehlmann M., Et al., Altered neurochemistry in former professional soccer players without a history of concussion, J Neurotrauma, 32, pp. 1287-1293, (2015); Lehman E.J., Hein M.J., Baron S.L., Gersic C.M., Neurodegenerative causes of death among retired National Football League players, Neurology, 79, pp. 1970-1974, (2012); Lipton M.L., Kim N., Zimmerman M.E., Et al., Soccer heading is associated with white matter microstructural and cognitive abnormalities, Radiology, 268, pp. 850-857, (2013); Lynall R.C., Clark M.D., Grand E.E., Et al., Head impact biomechanics in women’s college soccer, Med Sci Sports Exerc, 48, pp. 1772-1778, (2016); Martini D., Eckner J., Kutcher J., Broglio S.P., Subconcussive head impact biomechanics: Comparing differing offensive schemes, Med Sci Sports Exerc, 45, pp. 755-761, (2013); 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Vasavada A.N., Danaraj J., Siegmund G.P., Head and neck anthropometry, vertebral geometry and neck strength in height-matched men and women, J Biomech, 41, pp. 114-121, (2008); White H., A heteroskedasticity-consistent covariance matrix estimatorand a direct test for heteroskedasticity, Econometrica, 48, pp. 817-838, (1980); Withnall C., Shewchenko N., Gittens R., Dvorak J., Biomechanical investigation of head impacts in football, Br J Sports Med, 39, pp. i49-i57, (2005); Wu L.C., Nangia V., Bui K., Et al., In vivo evaluation of wearable head impact sensors, Ann Biomed Eng, 44, pp. 1234-1245, (2016); Zhang M.R., Red S.D., Lin A.H., Patel S.S., Sereno A.B., Evidence of cognitive dysfunction after soccer playing with ball heading using a novel tablet-based approach, Plos One, 8, (2013)","T.J. Druzgal; Department of Radiology and Medical Imaging, Division of Neuroradiology, University of Virginia, Charlottesville, Box 800170, 22908, United States; email: tjd4m@virginia.edu","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85019957378" "Arundale A.J.H.; Silvers-Granelli H.J.; Marmon A.; Zarzycki R.; Dix C.; Snyder-Mackler L.","Arundale, Amelia J. H. (56529660500); Silvers-Granelli, Holly J. (56940696700); Marmon, Adam (24830668700); Zarzycki, Ryan (57192270904); Dix, Celeste (57203785542); Snyder-Mackler, Lynn (7006751957)","56529660500; 56940696700; 24830668700; 57192270904; 57203785542; 7006751957","Changes in biomechanical knee injury risk factors across two collegiate soccer seasons using the 11+ prevention program","2018","Scandinavian Journal of Medicine and Science in Sports","28","12","","2592","2603","11","27","10.1111/sms.13278","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85052927593&doi=10.1111%2fsms.13278&partnerID=40&md5=bd5f5e7ea3cf29d56450d34f2086767c","Biomechanics and Movement Science Program, University of Delaware, Newark, DE, United States; Department of Physical Therapy, University of Delaware, Newark, DE, United States","Arundale A.J.H., Biomechanics and Movement Science Program, University of Delaware, Newark, DE, United States; Silvers-Granelli H.J., Biomechanics and Movement Science Program, University of Delaware, Newark, DE, United States; Marmon A., Biomechanics and Movement Science Program, University of Delaware, Newark, DE, United States; Zarzycki R., Biomechanics and Movement Science Program, University of Delaware, Newark, DE, United States; Dix C., Biomechanics and Movement Science Program, University of Delaware, Newark, DE, United States; Snyder-Mackler L., Biomechanics and Movement Science Program, University of Delaware, Newark, DE, United States, Department of Physical Therapy, University of Delaware, Newark, DE, United States","The 11+ injury prevention program effectively reduces injuries in high school-aged female soccer player, but the mechanism of the 11+ is unknown, particularly whether it impacts biomechanical risk factors associated with knee injuries. The purpose of this study was to report the changes in hip and knee biomechanics with use of the 11+ over two soccer seasons. Two collegiate women's soccer teams performed the 11+ for two soccer seasons. A control team was followed for one season. Athletes performed motion analysis of a drop vertical jump during preseason and postseason. Both groups had meaningful increases in peak knee abduction angle over the first season, and there were no meaningful changes in peak knee abduction moment over either season. The control group had bilateral decreases in knee flexion angle. The program did not seem to systematically impact biomechanical risk factors associated with knee injuries, with increases in peak knee abduction angle and no bilateral changes in frontal or transverse hip motion. The 11+ may have mitigated clinically meaningful decreases in knee flexion; however, as ACL injuries do not occur purely in the sagittal plane, it is unclear the impact of these changes. The results of this study indicate that the 11+ may require some modifications to impact landing biomechanics and potentially risky movement patterns, particularly when used in collegiate women over multiple seasons. © 2018 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd","anterior cruciate ligament; football; injury; neuromuscular training; prevention","Adolescent; Athletes; Athletic Injuries; Biomechanical Phenomena; Female; Hip; Humans; Knee; Knee Injuries; Range of Motion, Articular; Risk Factors; Soccer; Young Adult; adolescent; athlete; biomechanics; female; hip; human; injuries; joint characteristics and functions; knee; knee injury; risk factor; soccer; sport injury; young adult","Silvers-Granelli H., Mandelbaum B., Adeniji O., Et al., Efficacy of the FIFA 11+ injury prevention program in the collegiate male soccer player, Am J Sports Med, 43, 11, pp. 2628-2637, (2015); Soligard T., Myklebust G., Steffen K., Et al., Comprehensive warm-up programme to prevent injuries in young female footballers: cluster randomised controlled trial, Br Med J, 337, (2008); Bizzini M., Dvorak J., FIFA 11+: an effective programme to prevent football injuries in various player groups worldwide—a narrative review, Br J Sports Med, 49, 9, pp. 577-579, (2015); Steffen K., Meeuwisse W.H., Romiti M., Et al., Evaluation of how different implementation strategies of an injury prevention programme (FIFA 11+) impact team adherence and injury risk in Canadian female youth football players: a cluster-randomised trial, Br J Sports Med, 47, 8, pp. 480-487, (2013); Silvers-Granelli H., Bizzini M., Arundale A., Mandelbaum B., Snyder-Mackler L., Does the FIFA11+ injury prevention program reduce incidence of ACL injury in male soccer players?, Clin Orthop Relat Res, 475, pp. 2447-2455, (2017); Stanley L.E., Kerr Z.Y., Dompier T.P., Padua D.A., Sex differences in the incidence of anterior cruciate ligament, medial collateral ligament, and meniscal injuries in collegiate and high school sports, Am J Sports Med, 44, 6, pp. 1565-1572, (2016); NCAA Women's Soccer Injuries; Data from the 2004/5- 2008/9 Seasons, (2010); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Krosshaug T., Steffen K., Kristianslund E., Et al., The vertical drop jump is a poor screening test for acl injuries in female elite soccer and handball players: a prospective cohort study of 710 athletes, Am J Sports Med, 44, 4, pp. 874-883, (2016); Paterno M., Schmitt L., Ford K., Et al., Biomechanical measures during landing and postural stability predict second anterior cruciate ligament injury after anterior cruciate ligament reconstruction and return to sport, Am J Sports Med, 38, pp. 1968-1978, (2010); Weiss K., Whatman C., Biomechanics associated with patellofemoral pain and ACL injuries in sports, Sports Med, 45, 9, pp. 1325-1337, (2015); Barber-Westin S.D., Smith S.T., Campbell T., Noyes F.R., The drop-jump video screening test: retention of improvement in neuromuscular control in female volleyball players, J Strength Cond Res, 24, 11, pp. 3055-3062, (2010); Herrington L., Munro A., Drop jump landing knee valgus angle; normative data in a physically active population, Phys Ther Sport, 11, 2, pp. 56-59, (2010); Kristianslund E., Krosshaug T., Comparison of drop jumps and sport-specific sidestep cutting: implications for anterior cruciate ligament injury risk screening, Am J Sports Med, 41, 3, pp. 684-688, (2013); Malfait B., Sankey S., Azidin R.F.R., Et al., How reliable are lower-limb kinematics and kinetics during a drop vertical jump, Med Sci Sports Exerc, 46, 4, pp. 678-685, (2014); Mok K.-M., Petushek E., Krosshaug T., Reliability of knee biomechanics during a vertical drop jump in elite female athletes, Gait Posture, 46, pp. 173-178, (2016); Myer G., Ford K., Brent J., Hewett T., Differential neuromuscular training effects on ACL injury risk factors in”high-risk” versus “low-risk” athletes, BMC Musculoskelet Disord, 8, 1, (2007); Myer G., Ford K., McLean S., Hewett T., The effects of plyometric versus dynamic stabilization and balance training on lower extremity biomechanics, Am J Sports Med, 34, 3, pp. 490-498, (2006); Nilstad A., Andersen T.E., Kristianslund E., Et al., Physiotherapists can identify female football players with high knee valgus angles during vertical drop jumps using real-time observational screening, J Orthop Sports Phys Ther, 44, 5, pp. 358-365, (2014); Paterno M.V., Ford K.R., Myer G.D., Heyl R., Hewett T.E., Limb asymmetries in landing and jumping 2 years following anterior cruciate ligament reconstruction, Clin J Sport Med, 17, 4, pp. 258-262, (2007); Hewett T., Stroupe A., Nance T., Noyes F., Plyometric training in female athletes. 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Arundale; Biomechanics and Movement Science Program, University of Delaware, Newark, United States; email: arundale@udel.edu","","Blackwell Munksgaard","09057188","","SMSSE","30117605","English","Scand. J. Med. Sci. Sports","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85052927593" "Kollias I.; Panoutsakopoulos V.; Papaiakovou G.","Kollias, Iraklis (6602722384); Panoutsakopoulos, Vassilios (6507381440); Papaiakovou, Georgios (6506821828)","6602722384; 6507381440; 6506821828","Comparing jumping ability among athletes of various sports: Vertical drop jumping from 60 centimeters","2004","Journal of Strength and Conditioning Research","18","3","","546","550","4","39","10.1519/1533-4287(2004)18<546:CJAAAO>2.0.CO;2","https://www.scopus.com/inward/record.uri?eid=2-s2.0-4444256840&doi=10.1519%2f1533-4287%282004%2918%3c546%3aCJAAAO%3e2.0.CO%3b2&partnerID=40&md5=e1cdd94807ad366b00b8be2b0ebdd5e9","Biomechanics Laboratory, Dept. of Phys. Educ. and Sport Sci., Aristotle University of Thessaloniki, Thessaloniki, Greece","Kollias I., Biomechanics Laboratory, Dept. of Phys. Educ. and Sport Sci., Aristotle University of Thessaloniki, Thessaloniki, Greece; Panoutsakopoulos V., Biomechanics Laboratory, Dept. of Phys. Educ. and Sport Sci., Aristotle University of Thessaloniki, Thessaloniki, Greece; Papaiakovou G., Biomechanics Laboratory, Dept. of Phys. Educ. and Sport Sci., Aristotle University of Thessaloniki, Thessaloniki, Greece","Drop jumping performance (DJP) is of high importance in order to achieve sporting performance in both team and individual sports. The purpose of the present study was to compare DJP among athletes from various sports. One hundred thirty-eight male athletes (age: 22.3 ± 3.6 years, body height: 1.87 ± 0.08 m, body mass: 81.8 ± 10.8 kg) from 6 different sports performed drop jumps from 60 cm (DJ60) on a force plate. Results revealed that volleyball players jumped higher (p < 0.001) than other athletes. However, track and field athletes produced higher peak force and higher power output using a shorter upward phase (p < 0.001). Further examination using principal components analysis (PCA) revealed that team sport athletes and single scull rowers exhibited DJP utilizing force and time parameters differently than track and field athletes. Conclusively, DJP was different among athletes of various sports. Furthermore, PCA can be a useful method for evaluating the above mentioned differences and for monitoring drop jumping training programs.","Basketball; Factor analysis; Handball; Rowing; Soccer; Volleyball","Adult; Biomechanics; Body Size; Exercise; Humans; Male; Muscle, Skeletal; Principal Component Analysis; Sports; adult; article; athlete; body mass; comparative study; correlation function; factorial analysis; human; jumping; male; parameter; physical performance; sport; technique","Aragon-Vargas L.F., Gross M.M., Kinesiological factors in vertical jump performance: Differences among individuals, J. Appl. Biomech., 13, pp. 24-44, (1997); Arteaga R., Dorado C., Chavarren J., Calbet J.A.L., Reliability of jumping performance in active men and women under different stretch loading conditions, J. Sports Med. Phys. Fitness, 40, pp. 26-34, (2000); Baca A., A comparison of methods for analyzing drop jump performance, Med. Sci. Sports Exerc., 31, pp. 437-442, (1999); Blattner S., Noble L., Relative effects of isokinetic and plyometric training on vertical jumping performance, Res Q., 50, pp. 583-588, (1979); Bobbert M.F., Drop jumping as a training method for jumping ability, Sports Med., 9, pp. 7-22, (1990); Bobbert M.F., Mackay M., Schinkelshoek D., Huijing P.A., Van Ingen Schenau G.J., Biomechanical analysis of drop and countermovement jumps, Eur. J. Appl. Physiol., 54, pp. 566-573, (1986); Bosco C., Komi P.V., (1982). Muscle elasticity in athletes, Exercise and Sport Biology, pp. 109-117, (1982); Bosco C., Tihanyi J., Komi P.V., Fekete G., Apor P., Store and recoil of elastic energy in slow and fast types of human skeletal muscles, Acta Physiol. Scand., 116, pp. 343-349, (1982); Brown M.E., Mayhew J.L., Boleach M.A., Effect of plyometric training on vertical jump performance in high school basketball players, J. Sports Med. Phys. Fitness, 26, pp. 1-4, (1986); Dowling J.J., Vamos L., Identification of kinetic and temporal factors related to vertical jump performance, J. Appl. Biomech., 9, pp. 95-100, (1993); Fatouros G.I., Jamurtas Z.A., Leontsini D., Taxildaris K., Aggelousis N., Kostopoulos N., Buckenmeyer P., Evaluation of plyometric exercise training, weight training, and their combination on vertical jumping performance and leg strength, J. Strength Cond. Res., 14, pp. 470-476, (2000); Harman E.A., Rosenstein M.T., Frykman P.N., Rosenstein R.M., The effects of arms and countermovement on vertical jumping, Med. Sci. Sports Exerc., 22, pp. 825-833, (1990); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes. Decreased impact forces and increased hamstring torques, Am. J. Sports Med., 24, pp. 765-773, (1996); Izquierdo M., Hakkinen K., Gonzalez-Badillo J.J., Ibanez J., Gorostiaga E.M., Effects of long-term training specificity on maximal strength and power of the upper and lower extremities in athletes from different sports, Eur. J. Appl. Physiol., 87, pp. 264-271, (2002); Kollias I., Hatzitaki V., Papaiakovou G., Giatsis G., Using Principal Components Analysis to Identify Individual Differences in Vertical Jump Performance, Res. Q. Exerc. Sport, 72, pp. 63-67, (2001); Matavulj D., Kukolj M., Ugarkovic D., Tihanyi J., Jaric S., Effects of plyometric training on jumping performance in junior basketball players, J. Sports Med. Phys. Fitness, 41, pp. 159-164, (2001); McClay I.S., Robinson J.R., Andriacchi T.P., Frederick E.C., Gross T., Martin P., Valiant G., Williams K.R., Cavanagh P.R., A profile of ground reaction forces in professional basketball, J. Appl. Biomech., 10, pp. 222-236, (1994); Mero A., Komi P.V., EMG, force, and power analysis of sprint specific strength exercises, J. Appl. Biomech., 10, pp. 1-13, (1994); Viitasalo J.T., Salo A., Lahtinen J., Neuromuscular functioning of athletes and non-athletes in the drop jump, Eur. J. Appl. Physiol., 78, pp. 432-440, (1998); Voigt M., Simonsen E.B., Dyhre-Poulsen P., Klausen K., Mechanical and muscular factors influencing the performance in maximal vertical jumping after different prestretch loads, J. Biomech., 28, pp. 293-307, (1995); Wilt F., Plyometrics - What it is - How it works, Athl. J., 55, 76, pp. 89-90, (1975); Young W.B., Wilson G.J., Byrne C., A comparison of drop jump training methods: Effects on leg extensor strength qualities and jumping performance, Int. J. Sports Med., 20, pp. 295-303, (1999); Young W.B., Pryor J.F., Wilson G.J., Effect of instructions on characteristics of countermovement and drop jump performance, J. Strength Cond. Res., 9, pp. 232-236, (1995)","I. Kollias; Biomechanics Laboratory, Dept. of Phys. Educ. and Sport Sci., Aristotle University of Thessaloniki, Thessaloniki, Greece; email: hkollias@phed.auth.gr","","","10648011","","","15320661","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-4444256840" "Grygorowicz M.; Michałowska M.; Walczak T.; Owen A.; Grabski J.K.; Pyda A.; Piontek T.; Kotwicki T.","Grygorowicz, Monika (6503988174); Michałowska, Martyna (57191277716); Walczak, Tomasz (24778873000); Owen, Adam (50262685600); Grabski, Jakub Krzysztof (56348869700); Pyda, Andrzej (35782476800); Piontek, Tomasz (55051785600); Kotwicki, Tomasz (55879776700)","6503988174; 57191277716; 24778873000; 50262685600; 56348869700; 35782476800; 55051785600; 55879776700","Discussion about different cut-off values of conventional hamstring-to-quadriceps ratio used in hamstring injury prediction among professional male football players","2017","PLoS ONE","12","12","e0188974","","","","25","10.1371/journal.pone.0188974","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85037645305&doi=10.1371%2fjournal.pone.0188974&partnerID=40&md5=f13b77c55eb062941e60cdd45b2d882c","Department of Spondyloortopaedics and Biomechanics of the Spine, Poznan University of Medical Sciences, Poznań, Poland; Rehasport Clinic, FIFA Medical Centre of Excellence, Poznań, Poland; Institute of Applied Mechanics, Poznan University of Technology, Poznań, Poland; Spine Disorders and Paediatric Orthopaedics Department, Poznan University of Medical Science, Poznań, Poland","Grygorowicz M., Department of Spondyloortopaedics and Biomechanics of the Spine, Poznan University of Medical Sciences, Poznań, Poland, Rehasport Clinic, FIFA Medical Centre of Excellence, Poznań, Poland; Michałowska M., Rehasport Clinic, FIFA Medical Centre of Excellence, Poznań, Poland, Institute of Applied Mechanics, Poznan University of Technology, Poznań, Poland; Walczak T., Institute of Applied Mechanics, Poznan University of Technology, Poznań, Poland; Owen A., Rehasport Clinic, FIFA Medical Centre of Excellence, Poznań, Poland; Grabski J.K., Institute of Applied Mechanics, Poznan University of Technology, Poznań, Poland; Pyda A., Rehasport Clinic, FIFA Medical Centre of Excellence, Poznań, Poland; Piontek T., Rehasport Clinic, FIFA Medical Centre of Excellence, Poznań, Poland, Spine Disorders and Paediatric Orthopaedics Department, Poznan University of Medical Science, Poznań, Poland; Kotwicki T., Spine Disorders and Paediatric Orthopaedics Department, Poznan University of Medical Science, Poznań, Poland","Objective: To measure the sensitivity and specificity of differences cut-off values for isokinetic Hcon/ Qcon ratio in order to improve the capacity to evaluate (retrospectively) the injury of hamstring muscles in professional soccer screened with knee isokinetic tests. Design: Retrospective study. Methods: Medical and biomechanical data of professional football players playing for the same team for at least one season between 2010 and 2016 were analysed. Hamstring strain injury cases and the reports generated via isokinetic testing were investigated. Isokinetic concentric(con) hamstring(H) and quadriceps(Q) absolute strength in addition with Hcon/Qcon ratio were examined for the injured versus uninjured limbs among injured players, and for the injured and non-injured players. 2 x 2 contingency table was used for comparing variables: predicted injured or predicted uninjured with actual injured or actual uninjured. Sensitivity, specificity, accuracy, positive and negative predictive values, and positive and negative likelihood ratio were calculated for three different cut-off values (0.47 vs. 0.6 vs. 0.658) to compare the discriminative power of an isokinetic test, whilst examining the key value of Hcon/ Qcon ratio which may indicate the highest level of ability to predispose a player to injury. McNemar’s chi2 test with Yates’s correction was used to determine agreement between the tests. PQStat software was used for all statistical analysis, and an alpha level of p <0.05 was used for all statistical comparisons. Results: 340 isokinetic test reports on both limbs of 66 professional soccer players were analysed. Eleven players suffered hamstring injuries during the analysed period. None of these players sustained recurrence of hamstring injury. One player sustained hamstring strain injury on both legs, thus the total number of injuries was 12. Application of different cut-off values for Hcon/Qcon significantly affected the sensitivity and specificity of isokinetic test used as a tool for muscle injury detection. The use of 0.47 of Hcon/Qcon as a discriminate value resulted in significantly lower sensitivity when compared to 0.658 threshold (sensitivity of 16.7% vs. 91.7%, respectively; t = 6.125,p = 0.0133). Calculated values of specificity (when three different cut-off were applied) were also significantly different. Threshold of 0.6 of Hcon/Qcon resulted with significantly lower specificity compared to 0.47 value (specificity of 46.9% vs. 94.5%, respectively; t = 153.0,p<0.0001), and significantly higher specificity when compared to 0.658 (specificity of 46.9% vs. 24.1%, respectively; t = 229.0, p<0.0001). Conclusion: The use of different cut-off values for Hcon/Qcon significantly affected the sensitivity and specificity of isokinetic testing. The interpretation of usefulness of isokinetic test as a screening tool in a group of male professional football players to predict hamstring injury occurrence within the next 12 months might be therefore significantly biased due to the different threshold values of Hcon/Qcon. Using one “normative” value as a cut-off (e.g. 0.47 or 0.60, or 0.658) to quantify soccer players (or not) to the group with a higher risk of knee injury might result in biased outcomes due to the natural strength asymmetry that is observed within the group of soccer players. © 2017 Grygorowicz et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.","","Adolescent; Adult; Hamstring Muscles; Humans; Male; Quadriceps Muscle; Soccer; adult; Article; biomechanics; controlled study; diagnostic test accuracy study; disease association; football player; hamstring muscle; hamstring to quadricep ratio; human; isokinetic exercise; male; muscle injury; muscle strength; musculoskeletal system parameters; prediction; predictive value; quadriceps femoris muscle; retrospective study; sensitivity and specificity; adolescent; hamstring muscle; injuries; physiology; quadriceps femoris muscle; soccer","Ekstrand J., Hagglund M., Walden M., Epidemiology of Muscle Injuries in Professional Football (Soccer), Am J Sports Med, 39, 6, pp. 1226-1232, (2011); Little T., Williams A.G., Specificity of acceleration, maximum speed, and agility in professional soccer players, J Strength Cond Res, 19, 1, pp. 76-78, (2005); 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Mangine R.E., Noyes F.R., Mullen M.P., Barber-Westin S.D., A physiological profile of the elite soccer athlete, J Orthop Sports Phys Ther, 12, 4, pp. 147-152, (1990); Zakas A., Mandroukas K., Vamvakoudis E., Christoulas K., Aggelopoulou N., Peak torque of quadriceps and hamstring muscles in basketball and soccer players of different divisions, J Sports Med Phys Fitness, 35, 3, pp. 199-205, (1995); Tourny-Chollet C., Leroy D., Leger H., Beuret-Blanquart F., Isokinetic knee muscle strength of soccer players according to their position, Isokinet Exerc Sci, 8, 4, pp. 187-193, (2000); Henderson G., Barnes C.A., Portas M.D., Factors associated with increased propensity for hamstring injury in English Premier League soccer players, J Sci Med Sport, 13, 4, pp. 397-402, (2010); Fonseca S.T., Ocarino J.M., Da Silva P., Soares Bricio R., Costa C., Wanner L., Characterization of professional soccer players’ muscle performance, Rev Bras Med Esporte, 13, 3, pp. 125e-129e, (2007); Zabka F.F., Valente H.G., Pacheco A.M., Isokinetic evaluation of knee extensor and flexor muscles in professional soccer players, Rev Bras Med Esporte, 17, 3, pp. 189-192, (2011); Ruas C.V., Minozzo F., Pinto M.D., Brown L.E., Pinto R.S., Lower-extremity strength ratios of professional soccer players according to field position, J Strength Cond Res, 29, 5, pp. 1220-1226, (2015); Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: The UEFA injury study, Br J Sports Med, 45, 7, pp. 553-558, (2011); Sliwowski R., Jadczak L., Hejna R., Wieczorek A., The effects of individualized resistance strength programs on knee muscular imbalances in junior elite soccer players, PLoS ONE, 10, 12, (2015); Huber J., Lisinski P., Kloskowska P., Gronek A., Lisiewicz E., Trzeciak T., Meniscus suture provides better clinical and biomechanical results at 1-year follow-up than meniscectomy, Arch Orthop Trauma Surg, 133, 4, pp. 541-549, (2013); Wyse J.P., Mercer T.H., Gleeson N.P., Time-of-day dependence of isokinetic leg strength and associated interday variability, Br J Sports Med, 28, 3, pp. 167-170, (1994); Gayardo A., Matana S.B., Silva M.R., Prevalence of injuries in female athletes of brazilian futsal: A retrospective study, Rev Bras Med Esporte, 18, 3, pp. 186-189, (2012); Perkins N.J., Schisterman E.F., The inconsistency of “optimal” cutpoints obtained using two criteria based on the receiver operating characteristic curve, Am J Epidemiol, 163, 7, pp. 670-675, (2006); Cohen D.D., Zhao B., Okwera B., Matthews M.J., Delextrat A., Angle-specific eccentric hamstring fatigue after simulated soccer, Int J Sports Physiol Perform, 10, 3, pp. 325-331, (2015); Parikh R., Mathai A., Parikh S., Chandra Sekhar G., Thomas R., Understanding and using sensitivity, specificity and predictive values, Indian J Ophthalmol, 56, 1, pp. 45-50, (2008); Lalkhen A., McCluskey A., Clinical tests: Sensitivity and specificity, Contin Educ Anasthesia, Crit Care Pain, 8, 6, pp. 221-223, (2008); Zvijac J.E., Toriscelli T.A., Merrick S., Kiebzak G.M., Isokinetic concentric quadriceps and hamstring strength variables from the NFL Scouting Combine are not predictive of hamstring injury in first-year professional football players, Am J Sports Med, 41, 7, pp. 1511-1518, (2013); Fritz J.M., Wainner R.S., Examining diagnostic tests: An evidence-based perspective, Phys Ther, 81, 9, pp. 1546-1564, (2001); Bahr R., Why screening tests to predict injury do not work-and probably never will. . .: A critical review, Br J Sports Med, 50, 13, pp. 776-780, (2016); Reid N., Likelihood inference, Wiley Interdiscip Rev Comput Stat, 2, 5, pp. 517-525, (2010); Fousekis K., Tsepis E., Vagenas G., Lower limb strength in professional soccer players: Profile, asymmetry, and training age, J Sports Sci Med, 9, 3, pp. 364-373, (2010); Rahnama N., Lees A., Bambaecichi E., Comparison of muscle strength and flexibility between the preferred and non-preferred leg in English soccer players, Ergonomics, 48, 11-14, pp. 1568-1575, (2005); Cotte T., Chatard J.-C., Isokinetic strength and sprint times in English Premier League football players, Biol Sport, 28, 2, pp. 89-94, (2011); Hopkins W.G., Marshall S.W., Quarrie K.L., Hume P.A., Risk factors and risk statistics for sports injuries, Clin J Sport Med, 17, 3, pp. 208-210, (2007); Hopkins W.G., Marshall S.W., Quarrie K.L., Hume P.A., Risk factors and risk statistics for sports injuries, Clin J Sport Med, 17, 4, (2007)","M. Grygorowicz; Department of Spondyloortopaedics and Biomechanics of the Spine, Poznan University of Medical Sciences, Poznań, Poland; email: monika.grygorowicz@rehasport.pl","","Public Library of Science","19326203","","POLNC","29216241","English","PLoS ONE","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85037645305" "Aytar A.; Pekyavas N.O.; Ergun N.; Karatas M.","Aytar, Aydan (6506685220); Pekyavas, Nihan Ozunlu (55614258500); Ergun, Nevin (6603461827); Karatas, Metin (7004595435)","6506685220; 55614258500; 6603461827; 7004595435","Is there a relationship between core stability, balance and strength in amputee soccer players? A pilot study","2012","Prosthetics and Orthotics International","36","3","","332","338","6","31","10.1177/0309364612445836","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84872259442&doi=10.1177%2f0309364612445836&partnerID=40&md5=17ba5b69b13120efd51ed76e86455645","Baskent University, Ankara, Turkey; Hacettepe University, Ankara, Turkey","Aytar A., Baskent University, Ankara, Turkey; Pekyavas N.O., Baskent University, Ankara, Turkey; Ergun N., Hacettepe University, Ankara, Turkey; Karatas M., Baskent University, Ankara, Turkey","Background: The body is a kinetic chain and all the systems and muscle groups play important roles in this chain. Core stability, strength and balance are important components of performance within many sports, and in particular soccer. However, the relationship between these components is not fully understood. Objectives: To investigate the relationship between core stability, balance and strength in amputee soccer players. Study Design: Clinical pilot trial. Methods: Eleven amputee soccer players (mean age = 24.63 ± 6.48 years) participated in our study. A Kinesthetic Ability Trainer device was used to assess balance. Trunk strength was evaluated by isokinetic dynamometer. Gillet test was used to evaluate the sacroiliac joint movement. Modified plank test was used to determined dynamic core stability. Disability was evaluated using the Oswestry Disability Index. Results: The results showed that there was a correlation between flexor isokinetic trunk muscle strength at the velocity of 60°/sec and modified plank test (r = 0.630, p = 0.038). There was a negative correlation between flexor isokinetic trunk muscle strength at the velocity of 180°/sec and Oswestry Disability Index score (r = -0.649, p = 0.031). Conclusions: Amputee soccer is a sport which is generally performed with one limb balance with crutches. It is therefore perceived that a relationship between balance and sacroiliac mobility, and should be considered for evaluation process and performance analysis in amputee soccer. However, in future studies, we recommend that such evaluations on amputee soccer players should be carried out with increased numbers. © 2012 The International Society for Prosthetics and Orthotics.","Amputee soccer; balance; core stability; strength","Adolescent; Adult; Amputees; Athletes; Biomechanics; Crutches; Disability Evaluation; Humans; Male; Muscle Strength; Muscle Strength Dynamometer; Muscle, Skeletal; Pilot Projects; Postural Balance; Range of Motion, Articular; Sacroiliac Joint; Soccer; Torso; Young Adult; adult; article; athlete; body equilibrium; body movement; body regions; core stability; disabled person; dynamometer; flexor muscle; human; human experiment; joint function; male; muscle isometric contraction; muscle strength; muscle training; sacroiliac joint; trunk","Yazicioglu K., Amputee Sports for Victims of Terrorism Centre of Excellence Defence Against Terrorism, pp. 48-100, (2007); Vrieling A.H., Keeken H.G., Schoppen T., Otten E., Hof A.L., Jpk H., Postema K., Balance control on a moving platform in unilateral lower limb amputees, Gait Posture, 28, pp. 222-228, (2008); Van Jm V., Van Cam B., Polomski W., Slootman J.R., Houdijk H., Capacity and walking ability after lower limb amputation: A systematic review, Clin Rehabil Physical, 20, pp. 999-1016, (2006); Donachy J.E., Brannon K.D., Hugles L.S., Seahorn J., Crutcher T.T., Christian E.L., Strength and endurance trainning of an individual with left upper and lower limb amputations, Disabil Rehabil, 26, 8, pp. 495-499, (2004); Moirenfeld I., Ayalon M., Ben-Sira D., Isakov E., Isokinetic strength and endurance of the knee extensors and flexors in trans-tibial amputees, Prosthet Orthot Int, 24, 3, pp. 221-225, (2000); Panjabi M.M., The stabilizing system of the spine. Part I. Function, dysfunction, adaptation, and enhancement, J Spinal Disorders, 5, 4, pp. 383-389, (1992); Panjabi M.M., The stabilizing system of the spine. Part II. Neutral zone and instability hypothesis, J Spinal Disorders, 5, 4, pp. 390-397, (1992); Willardson J.M., Core Stability for Athletes; Kibler W.B., Press J., Sciascia A., The Role of Core Stability in Athletic Function, Sports Med, 36, 3, pp. 189-198, (2006); Yakut E., Duger T., Oksuz C., Yorukan S., Ureten K., Turan D., Validation of the Turkish version of the Oswestry Disability Index for patients with low back pain, Spine, 29, pp. 581-585, (2004); Roland M., Fairbank J., The Roland-Morris Disability Questionnaire and the Oswestry Disability Questionnaire, Spine, 25, pp. 3115-3124, (2000); Surenkok O., Isler A.K., Aytar A., Gultekin Z., Effect of Trunk Muscle Fatique and Lactic Acid Accumulation on Balance in Healthy Subjects, J Sports Rehabil, 17, pp. 380-386, (2008); Yazicioglu K., Taskaynatan M.A., Guzelkucuk U., Tugcu I., Effect of playing football(soccer) on balance, strength, and quality of life in unilateral below-knee amputees, Am J Phys Med Rehabil, 86, pp. 800-805, (2007); Meijne W., Neerbos K.V., Aufdemkampe G., Wurff P., Intraexaminer and Interexaminer Reliability of the Gillet Test, J Manipulative Physiolo Ther, 22, 1, pp. 4-9, (1999); Lehman G.J., Hoda J., Oliver S., Trunk muscle activity during bridging exercises on and off a Swissball, Chiropr Osteopat, 13, (2005); Cetin N., Bayramoglu M., Aytar A., Surenkok O., Yemisci O.U., Effects of Lower Extremity Muscle Fatique on Balance, The Open Sports of Medicine Journal, 2, pp. 11-17, (2008); Davies G.J., A Compendium of Isokinetics in Clinical Usage and Rehabilitation Techniques, pp. 1-50, (1992); Nesser T.W., Lee W.L., The Relationship between core strength and performance in Division i female Soccer Players. Core stability and performance, Journal of Exercise Physiology, 12, 2, (2009); Hedrick A., Training the Trunk for Improved Athletic Performance, Strength & Conditioning Journal, 22, 3, (2000); Feldman D.R., Gonzalez-Fernandez M., Singla A.A., Krabak B.J., Singh S., The Hip and Pelvis in Sports Medicine and Primary Care","A. Aytar; Baskent University, Ankara, Turkey; email: aytara@baskent.edu.tr","","","17461553","","POIND","22918911","English","Prosthet. Orthot. Int.","Article","Final","","Scopus","2-s2.0-84872259442" "Zanetti E.M.; Bignardi C.; Franceschini G.; Audenino A.L.","Zanetti, Elisabetta M. (6701399277); Bignardi, Cristina (6602194489); Franceschini, Giordano (7102970264); Audenino, Alberto L. (6603346007)","6701399277; 6602194489; 7102970264; 6603346007","Amateur football pitches: Mechanical properties of the natural ground and of different artificial turf infills and their biomechanical implications","2013","Journal of Sports Sciences","31","7","","767","778","11","36","10.1080/02640414.2012.750005","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84875849214&doi=10.1080%2f02640414.2012.750005&partnerID=40&md5=7f8518e737cc18979eee0d2c02ba7bba","University of Perugia, DII, Perugia, Italy; Politecnico di Torino, DIMEAS, Torino, Italy","Zanetti E.M., University of Perugia, DII, Perugia, Italy; Bignardi C., Politecnico di Torino, DIMEAS, Torino, Italy; Franceschini G., University of Perugia, DII, Perugia, Italy; Audenino A.L., Politecnico di Torino, DIMEAS, Torino, Italy","Artificial turf is being used more and more often. It is more available than natural turf for use, requires much less maintenance and new products are able to comply with sport performance and athletes' safety. The purpose of this paper is to compare the mechanical and biomechanical responses of two different artificial turf infills (styrene butadiene rubber, from granulated vehicle tires, and thermoplastic rubber granules) and to compare them to the performance of natural fields where amateurs play (beaten earth, substantially).Three mechanical parameters have been calculated from laboratory tests: energy storage, energy losses and surface traction coefficient; results have been correlated with peak accelerations recorded on an instrumented athlete, on the field.The natural ground proved to be stiffer (-15% penetration depth for a given load), and to have a lower dynamic traction coefficient (-48%); the different kinds of infill showed significantly different stiffnesses (varying by more than 23%) and damping behaviour (varying by more than 31%). In running, peak vertical accelerations were lowest in the artificial ground with thermoplastic rubber granules, while, in slalom, both artificial grounds produced higher horizontal peak accelerations compared to the natural ground.Results are discussed in terms of their implications for athletic performance and injury risk. © 2013 Copyright Taylor and Francis Group, LLC.","damping; friction; hardness; injury; traction","Acceleration; Adult; Athletic Injuries; Athletic Performance; Biomechanics; Butadienes; Football; Friction; Humans; Plastics; Rubber; Running; Shoes; Soccer; Soil; Styrene; Surface Properties; Task Performance and Analysis; Young Adult; 1,3 butadiene derivative; plastic; rubber; styrene; acceleration; adult; article; athletic performance; biomechanics; comparative study; football; friction; human; injury; running; shoe; soccer; soil; sport injury; surface property; task performance","Andreasson G., Lindenberger U., Renstrom P., Peterson L., Torque developed at simulated sliding between sport shoes and artificial turf, The American Journal of Sports Medicine, 14, pp. 225-230, (1986); Auvinet B., Reference data for normal subjects obtained with an accelerometer device, Gait and Posture, 16, pp. 124-134, (2002); Bartlett M.D., James I.T., Ford M., Jennings-Temple M.A., Testing natural turf sports surfaces: The value of performance quality standards, Proceeding of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 223, pp. 21-29, (2009); Bert C.W., Material damping: An introductory review of mathematical models, measures and experimental techniques, Journal of Sound and Vibration, 29, pp. 129-153, (1973); Blau P.J., Appendix: Static and kinetic friction coefficients for selected materials, ASM handbook, vol. 18. 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Fleming P., Artificial turf systems for sport surfaces: Current knowledge and research needs, Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 225, pp. 43-63, (2011); Fong D.T.P., Chan Y.Y., Hong Y., Yung P.S.H., Fung K.Y., Chan K.M., A three-pressure-sensor (3PS) system for monitoring ankle supination torque during sport motions, Journal of Biomechanics, 41, pp. 2562-2566, (2008); Fong D.T.P., Hong Y., Chan L.K., Yung P.S.H., Chan K.M., A systematic review on ankle injury and ankle sprain in sports, Sports Medicine, 37, pp. 73-94, (2008); Ford K.R., Manson N.A., Evans B.J., Myer G.D., Gwin R.C., Heidt R.S., Comparison of in-shoe foot loading patterns on natural grass and synthetic turf, Journal of Science and Medicine in Sport, 9, pp. 433-440, (2006); Guisasola I., James I., Llewellyn C., Stiles V., Dixon S., Quasi-static mechanical behaviour of soils used for natural turf sport surfaces and stud force prediction, Sports Engineering, 12, pp. 99-109, (2010); Guisasola I., James I., Stiles V., Dixon S., Dynamic behaviour of soils used for natural turf sports surfaces, Sports Engineering, 12, pp. 111-122, (2010); Kirk R.F., Noble I.S.G., Mitchell T., Rolf C., Haake S.J., Carre M.J., High-speed observations of football-boot-surface interactions of players in their natural environment, Sports Engineering, 10, pp. 129-144, (2007); Kolitzus H.-J., Criteria for the development of guidelines/standards for sport surfaces, 3rd Symposium on Sports Surfaces, ISSS (International Association for Sports Surface Sciences), (2003); Lafortune M.A., Three-dimensional acceleration of the tibia during walking and running, Journal of Biomechanics, 24, pp. 877-886, (1991); Livesay G.A., Reda D.R., Nauman E.A., Peak torque and rotational stiffness developed at the shoe-surface interface, The American Journal of Sports Medicine, 34, pp. 415-422, (2006); Nigg B.M., Anton M., Energy aspects for elastic and viscous shoe soles and playing surfaces, Medicine and Science in Sports and Exercise, 27, pp. 92-97, (1995); Nigg B.M., Liu W., The effect of muscle stiffness and damping on simulated impact force peaks during running, Journal of Biomechanics, 32, pp. 849-856, (1999); Nigg B.M., Yeadon M.R., Biomechanical aspects of playing surfaces, Journal of Sports Sciences, 5, pp. 117-145, (1987); Orchard J., Is there a relationship between ground and climatic conditions and injuries in football?, Sports Medicine, 32, pp. 419-432, (2002); Ozkaya N., Nordin M., Fundamentals of biomechanics, (1999); Schmertmann J.H., Hartmann J.P., Brown P.R., Improved strain influence factor diagrams, ASCE Journal of the Geotechnical Engineering Division, 104, GT8, pp. 1131-1135, (1978); Severn K.A., Fleming P.R., Clarke J.D., Carre M.J., Science of synthetic turf surfaces: Investigating traction behavior, Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 225, pp. 147-158, (2011); Shorten M.R., Hudson B., Himmelsbach J.A., Shoe-Surface traction of conventional and in-filled synthetic turf football surfaces, Abstracts and proceedings for the International Society of Biomechanics XIX congress [CD], (2003); Stafilidis S., Arampatzis A., Track compliance does not affect sprinting performance, Journal of Sports Sciences, 25, pp. 1479-1490, (2007); Stefanyshyn D.J., Nigg B.M., Energy and performance aspects in sport surfaces, Sport surfaces-Biomechanics, injuries, performance, testing and installation, pp. 31-46, (2003); Steffen K., Andersen T.E., Bahr R., Risk of injury on artificial turf and natural grass in young female football players, British Journal of Sports Medicine, 41, 1, (2007); Stiles V.H., Guisasola I.N., James I.T., Dixon S., Biomechanical response to changes in natural turf during running and turning, Journal of Applied Biomechanics, 27, pp. 54-63, (2011); Stiles V.H., James I.T., Dixon S.J., Guisasola I.N., Natural turf surfaces: The case for continued research, Sports Medicine, 39, pp. 65-84, (2009); Artificial turf manual for UEFA competitions, (2003); Villwock M.R., Meyer E.G., Powell J.W., Fouty A.J., Haut R.C., Football playing surface and shoe design affect rotational traction, The American Journal of Sports Medicine, 37, pp. 518-525, (2009); Wannop J.W., Luo D., Stefanyshyn D.J., Footwear traction at different areas on artificial and natural grass fields, Sports Engineering, 15, pp. 102-116, (2012); Wright I.C., Neptune R.R., van der Bogert A.J., Nigg B.M., Passive regulation of impact forces in heel-toe running, Clinical Biomechanics, 13, pp. 521-531, (1998); Zanetti E.M., Amateur football game on artificial turf: Players' perceptions, Applied Ergonomics, 40, pp. 485-490, (2009)","E. M. Zanetti; University of Perugia, DII, Perugia, Italy; email: elisabetta.zanetti@unipg.it","","","1466447X","","JSSCE","23230960","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-84875849214" "Liu Y.; Sun Y.; Zhu W.; Yu J.","Liu, Yu (55917986700); Sun, Yuliang (55780344500); Zhu, Wenfei (56133252300); Yu, Jiabin (57190051354)","55917986700; 55780344500; 56133252300; 57190051354","The late swing and early stance of sprinting are most hazardous for hamstring injuries","2017","Journal of Sport and Health Science","6","2","","133","136","3","35","10.1016/j.jshs.2017.01.011","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85015287037&doi=10.1016%2fj.jshs.2017.01.011&partnerID=40&md5=c8d204385feae1bbe87327fa9be88e25","Key Laboratory of Exercise and Health Sciences of the Ministry of Education, Shanghai University of Sport, Shanghai, 200438, China; School of Physical Education, Shaanxi Normal University, Xi'an, 710119, China; Research Academy of Grand Health, Faculty of Sport Science, Ningbo University, Ningbo, 315211, China","Liu Y., Key Laboratory of Exercise and Health Sciences of the Ministry of Education, Shanghai University of Sport, Shanghai, 200438, China; Sun Y., School of Physical Education, Shaanxi Normal University, Xi'an, 710119, China; Zhu W., School of Physical Education, Shaanxi Normal University, Xi'an, 710119, China; Yu J., Research Academy of Grand Health, Faculty of Sport Science, Ningbo University, Ningbo, 315211, China","[No abstract available]","","biomechanics; concentric muscle contraction; eccentric muscle contraction; external contact torque; generalized muscle torque; gravitational torque; ground reaction force; hamstring muscle; human; kinematics; motion dependent torque; muscle injury; muscle strain; musculoskeletal system parameters; net joint torque; Note; priority journal; rugby; running; soccer; sport injury; sprinting; standing; treadmill exercise","Liu H., Garrett W.E., Moorman C.T., Yu B., Injury rate, mechanism, and risk factors of hamstring strain injuries in sports: a review of the literature, J Sport Health Sci, 1, pp. 92-101, (2012); Sun Y., Wei S., Zhong Y., Fu W., Li L., Liu Y., How joint torques affect hamstring injury risk in sprinting swing–stance transition, Med Sci Sports Exerc, 47, pp. 373-380, (2015); Mann R., Sprague P., A kinetic analysis of the ground leg during sprint running, Res Q Exerc Sport, 51, pp. 334-348, (1980); Schache A.G., Dorn T.W., Blanch P.D., Brown N.A., Pandy M.G., Mechanics of the human hamstring muscles during sprinting, Med Sci Sports Exerc, 44, pp. 647-658, (2012); Orchard J.W., Hamstrings are most susceptible to injury during the early stance phase of sprinting, Br J Sports Med, 46, pp. 88-89, (2012); Chumanov E.S., Heiderscheit B.C., Thelen D.G., Hamstring musculotendon dynamics during stance and swing phases of high-speed running, Med Sci Sports Exerc, 43, pp. 525-532, (2011); Yu B., Queen R.M., Abbey A.N., Liu Y., Moorman C.T., Garrett W.E., Hamstring muscle kinematics and activation during overground sprinting, J Biomech, 41, pp. 3121-3126, (2008); Thelen D.G., Chumanov E.S., Hoerth D.M., Best T.M., Swanson S.C., Li L., Et al., Hamstring muscle kinematics during treadmill sprinting, Med Sci Sports Exerc, 37, pp. 108-114, (2005); Heiderscheit B.C., Hoerth D.M., Chumanov E.S., Swanson S.C., Thelen B.J., Thelen D.G., Identifying the time of occurrence of a hamstring strain injury during treadmill running: a case study, Clin Biomech (Bristol, Avon), 20, pp. 1072-1078, (2005); Lieber R.L., Friden J., Mechanisms of muscle injury gleaned from animal models, Am J Phys Med Rehabil, 81, pp. S70-9, (2002); Nigg B.M., De Boer R.W., Fisher V., A kinematic comparison of overground and treadmill running, Med Sci Sports Exerc, 27, pp. 98-105, (1995); Sinclair J., Richards J., Taylor P.J., Edmundson C.J., Brooks D., Hobbs S.J., Three-dimensional kinematic comparison of treadmill and overground running, Sports Biomech, 12, pp. 272-282, (2013); Huang L., Liu Y., Wei S., Li L., Fu W., Sun Y., Et al., Segment-interaction and its relevance to the control of movement during sprinting, J Biomech, 46, pp. 2018-2023, (2013); Uchiyama Y., Tamaki T., Fukuda H., Relationship between functional deficit and severity of experimental fast-strain injury of rat skeletal muscle, Eur J Appl Physiol, 85, pp. 1-9, (2001); Bezodis N.E., Salo A.I., Trewartha G., Excessive fluctuations in knee joint moments during early stance in sprinting are caused by digital filtering procedures, Gait Posture, 38, pp. 653-657, (2013); Kristianslund E., Krosshaug T., van den Bogert A.J., Effect of low pass filtering on joint moments from inverse dynamics: implications for injury prevention, J Biomech, 45, pp. 666-671, (2012); Yu B., Gabriel D., Noble L., An K.N., Estimate of the optimum cutoff frequency for the butterworth low-pass digital filter, J Appl Biomech, 15, pp. 318-329, (1999); Winter D.A., Biomechanics and motor control of human movement, pp. 67-75, (2009); Schache A.G., Blanch P.D., Dorn T.W., Brown N.A., Rosemond D., Pandy M.G., Effect of running speed on lower limb joint kinetics, Med Sci Sports Exerc, 43, pp. 1260-1271, (2011); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., Football Association Medical Research Programme. The Football Association Medical Research Programme: an audit of injuries in professional football–analysis of hamstring injuries, Br J Sports Med, 38, pp. 36-41, (2004)","Y. Liu; Key Laboratory of Exercise and Health Sciences of the Ministry of Education, Shanghai University of Sport, Shanghai, 200438, China; email: yuliu@sus.edu.cn","","Elsevier B.V.","20952546","","","","English","J. Sport Health Sci.","Note","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85015287037" "Waldenmeier L.; Evers C.; Uder M.; Janka R.; Hennig F.F.; Pachowsky M.L.; Welsch G.H.","Waldenmeier, Leonie (57200660154); Evers, Christoph (57197494230); Uder, Michael (7003907613); Janka, Rolf (6701502130); Hennig, Frank Friedrich (7004527208); Pachowsky, Milena L. (42662019300); Welsch, Götz Hannes (16318047500)","57200660154; 57197494230; 7003907613; 6701502130; 7004527208; 42662019300; 16318047500","Using Cartilage MRI T2-Mapping to Analyze Early Cartilage Degeneration in the Knee Joint of Young Professional Soccer Players","2019","Cartilage","10","3","","288","298","10","29","10.1177/1947603518756986","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042105779&doi=10.1177%2f1947603518756986&partnerID=40&md5=ba91af2cd91113177f162d009f5cc5c3","Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany; Department of Radiology, University Hospital of Erlangen, Erlangen, Germany; Department of Trauma Surgery, University Hospital of Erlangen, Erlangen, Germany; UKE Athleticum, University Hospital Hamburg-Eppendorf, Hamburg, Germany","Waldenmeier L., Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany; Evers C., Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany; Uder M., Department of Radiology, University Hospital of Erlangen, Erlangen, Germany; Janka R., Department of Radiology, University Hospital of Erlangen, Erlangen, Germany; Hennig F.F., Department of Trauma Surgery, University Hospital of Erlangen, Erlangen, Germany; Pachowsky M.L., Department of Trauma Surgery, University Hospital of Erlangen, Erlangen, Germany; Welsch G.H., UKE Athleticum, University Hospital Hamburg-Eppendorf, Hamburg, Germany","Objective: To evaluate and characterize the appearance of articular cartilage in the tibiofemoral joint of young professional soccer players using T2-relaxation time evaluation on magnetic resonance imaging (MRI). Design: In this study, we included 57 male adolescents from the youth academy of a professional soccer team. The MRI scans were acquired of the knee joint of the supporting leg. An “early unloading” (minute 0) and “late unloading” (minute 28) T2-sequence was included in the set of images. Quantitative T2-analysis was performed in the femorotibial joint cartilage in 4 slices with each 10 regions of interest (ROIs). Statistical evaluation, using Wilcoxon signed-rank tests, was primarily performed to compare the T2 values of the “early unloading” and “late unloading.” Results: When comparing “early unloading” with “late unloading,” our findings showed a significant increase of T2-relaxation times in the weightbearing femoral cartilage of the medial (P < 0.001) and lateral (P < 0.001) compartment of the knee and in the tibial cartilage of the medial compartment (P < 0.001). Conclusion: In this study, alterations of the cartilage were found with a maximum in the medial condyle where the biomechanical load of the knee joint is highest, as well as where most of the chronic cartilage lesions occur. To avoid chronic damage, special focus should be laid on this region. © The Author(s) 2018.","articular cartilage; biomechanics; knee; magnetic resonance imaging; sports injury","Adolescent; Athletic Injuries; Biomechanical Phenomena; Cartilage Diseases; Cartilage, Articular; Early Diagnosis; Femur; Humans; Image Processing, Computer-Assisted; Knee Joint; Magnetic Resonance Imaging; Male; Prevalence; Prospective Studies; Soccer; Tibia; Weight-Bearing; Young Adult; adolescent; adult; Article; articular cartilage; body mass; cartilage degeneration; confirmatory factor analysis; exploratory behavior; femoral condyle; human; human tissue; humeral condyle; image analysis; knee; major clinical study; male; nuclear magnetic resonance imaging; prospective study; quantitative analysis; relaxation time; resistance training; soccer player; stifle; biomechanics; chondropathy; comparative study; devices; diagnostic imaging; early diagnosis; femur; image processing; knee; nuclear magnetic resonance imaging; pathology; physiology; prevalence; procedures; soccer; sport injury; tibia; weight bearing; young adult","Dvorak J., Junge A., Football injuries and physical symptoms. A review of the literature, Am J Sports Med, 28, 5, pp. S3-S9, (2000); Swenson D.M., Collins C.L., Best T.M., Flanigan D.C., Fields S.K., Comstock R.D., Epidemiology of knee injuries among U S high school athletes, 2005/2006-2010/2011, Med Sci Sports Exerc, 45, pp. 462-469, (2013); Saamamen A.M., Kiviranta I., Jurvelin J., Helminen H.J., Tammi M., Proteoglycan and collagen alterations in canine knee articular cartilage following 20 km daily running exercise for 15 weeks, Connect Tissue Res, 30, pp. 191-201, (1994); Drawer S., Fuller C.W., Propensity for osteoarthritis and lower limb joint pain in retired professional soccer players, Br J Sports Med, 35, pp. 402-408, (2001); Flanigan D.C., Harris J.D., Trinh T.Q., Siston R.A., Brophy R.H., Prevalence of chondral defects in athletes’ knees: a systematic review, Med Sci Sports Exerc, 42, pp. 1795-1801, (2010); Madry H., van Dijk C.N., Mueller-Gerbl M., The basic science of the subchondral bone, Knee Surg Sports Traumatol Arthrosc, 18, pp. 419-433, (2010); 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Apprich S., Welsch G.H., Mamisch T.C., Szomolanyi P., Mayerhoefer M., Pinker K., Et al., Detection of degenerative cartilage disease: comparison of high-resolution morphological MR and quantitative T2 mapping at 3.0 Tesla, Osteoarthritis Cartilage, 18, pp. 1211-1217, (2010); Nishii T., Kuroda K., Matsuoka Y., Sahara T., Yoshikawa H., Change in knee cartilage T2 in response to mechanical loading, J Magn Reson Imaging, 28, pp. 175-180, (2008); Subburaj K., Kumar D., Souza R.B., Alizai H., Li X., Link T.M., Et al., The acute effect of running on knee articular cartilage and meniscus magnetic resonance relaxation times in young healthy adults, Am J Sports Med, 40, pp. 2134-2141, (2012); Apprich S., Mamisch T.C., Welsch G.H., Stelzeneder D., Albers C., Totzke U., Et al., Quantitative T2 mapping of the patella at 3.0 T is sensitive to early cartilage degeneration, but also to loading of the knee, Eur J Radiol, 81, pp. e438-e443, (2012); Mamisch T.C., Trattnig S., Quirbach S., Marlovits S., White L.M., Welsch G.H., Quantitative T2 mapping of knee cartilage: differentiation of healthy control cartilage and cartilage repair tissue in the knee with unloading—initial results, Radiology, 254, pp. 818-826, (2010); Welsch G.H., Mamisch T.C., Zak L., Blanke M., Olk A., Marlovits S., Et al., Evaluation of cartilage repair tissue after matrix-associated autologous chondrocyte transplantation using a hyaluronic-based or a collagen-based scaffold with morphological MOCART scoring and biochemical T2 mapping: preliminary results, Am J Sports Med, 38, pp. 934-942, (2010); Stelzeneder D., Kovacs B.K., Goed S., Welsch G.H., Hirschfeld C., Paternostro-Sluga T., Et al., Effect of short-term unloading on T2 relaxation time in the lumbar intervertebral disc—in vivo magnetic resonance imaging study at 3.0 tesla, Spine J, 12, pp. 257-264, (2012); Apprich S., Mamisch T.C., Welsch G.H., Bonel H., Siebenrock K.A., Kim Y.J., Et al., Evaluation of articular cartilage in patients with femoroacetabular impingement (FAI) using T2* mapping at different time points at 3.0 tesla MRI: a feasibility study, Skeletal Radiol, 41, pp. 987-995, (2012); Dunn T.C., Lu Y., Jin H., Ries M.D., Majumdar S., T2 relaxation time of cartilage at MR imaging: comparison with severity of knee osteoarthritis, Radiology, 232, pp. 592-598, (2004); Hesper T., Hosalkar H.S., Bittersohl D., Welsch G.H., Krauspe R., Zilkens C., Et al., T2* mapping for articular cartilage assessment: principles, current applications, and future prospects, Skeletal Radiol, 43, pp. 1429-1445, (2014); Blumenkrantz G., Majumdar S., Quantitative magnetic resonance imaging of articular cartilage in osteoarthritis, Eur Cell Mater, 13, pp. 76-86, (2007); Li X., Benjamin Ma C., Link T.M., Castillo D.D., Blumenkrantz G., Lozano J., Et al., In vivo T(1ρ) and T(2) mapping of articular cartilage in osteoarthritis of the knee using 3 T MRI, Osteoarthritis Cartilage, 15, pp. 789-797, (2007); Welsch G.H., Trattnig S., Scheffler K., Szomonanyi P., Quirbach S., Marlovits S., Et al., Magnetization transfer contrast and T2 mapping in the evaluation of cartilage repair tissue with 3T MRI, J Magn Reson Imaging, 28, pp. 979-986, (2008); Welsch G.H., Mamisch T.C., Domayer S.E., Dorotka R., Kutscha-Lissberg F., Marlovits S., Et al., Cartilage T2 assessment at 3-T MR imaging: in vivo differentiation of normal hyaline cartilage from reparative tissue after two cartilage repair procedures—initial experience, Radiology, 247, pp. 154-161, (2008); Liebl H., Joseph G., Nevitt M.C., Singh N., Heilmeier U., Subburaj K., Et al., Early T2 changes predict onset of radiographic knee osteoarthritis: data from the osteoarthritis initiative, Ann Rheum Dis, 74, pp. 1353-1359, (2015); Luke A.C., Stehling C., Stahl R., Li X., Kay T., Takamoto S., Et al., High-field magnetic resonance imaging assessment of articular cartilage before and after marathon running: does long-distance running lead to cartilage damage?, Am J Sports Med, 38, pp. 2273-2280, (2010); Walker P.S., Hajek J.V., The load-bearing area in the knee joint, J Biomech, 5, pp. 581-589, (1972); Brown T.D., Shaw D.T., In vitro contact stress distribution on the femoral condyles, J Orthop Res, 2, pp. 190-199, (1984); Mosher T.J., Liu Y., Torok C.M., Functional cartilage MRI T2 mapping: evaluating the effect of age and training on knee cartilage response to running, Osteoarthritis Cartilage, 18, pp. 358-364, (2010); Smith H.E., Mosher T.J., Dardzinski B.J., Collins B.G., Collins C.M., Yang Q.X., Et al., Spatial variation in cartilage T2 of the knee, J Magn Reson Imaging, 14, pp. 50-55, (2001); Dardzinski B.J., Laor T., Schmithorst V.J., Klosterman L., Graham T.B., Mapping T2 relaxation time in the pediatric knee: feasibility with a clinical 1.5-T MR imaging system, Radiology, 225, pp. 233-239, (2002); Wirth W., Eckstein F., Boeth H., Diederichs G., Hudelmaier M., Duda G.N., Longitudinal analysis of MR spin-spin relaxation times (T2) in medial femorotibial cartilage of adolescent vs mature athletes: dependence of deep and superficial zone properties on sex and age, Osteoarthritis Cartilage, 22, pp. 1554-1558, (2014); Golditz T., Steib S., Pfeifer K., Uder M., Gelse K., Janka R., Et al., Functional ankle instability as a risk factor for osteoarthritis: using T2-mapping to analyze early cartilage degeneration in the ankle joint of young athletes, Osteoarthritis Cartilage, 22, pp. 1377-1385, (2014); Kim H.K., Shiraj S., Anton C.G., Horn P.S., Dardzinski B.J., Age and sex dependency of cartilage T2 relaxation time mapping in MRI of children and adolescents, AJR Am J Roentgenol, 202, pp. 626-632, (2014); Watrin A., Ruaud J.P., Olivier P.T., Guingamp N.C., Gonord P.D., Netter P.A., Et al., T2 mapping of rat patellar cartilage, Radiology, 219, pp. 395-402, (2001); Brenner J.S., Overuse injuries, overtraining, and burnout in child and adolescent athletes, Pediatrics, 119, pp. 1242-1245, (2007); Kriz P., Overuse injuries in the young athlete, Med Health R I, 203, pp. 206-208, (2011); Krajnc Z., Vogrin M., Recnik G., Crnjac A., Drobnic M., Antolic V., Increased risk of knee injuries and osteoarthritis in the non-dominant leg of former professional football players, Wien Klin Wochenschr, 122, pp. 40-43, (2010); Elleuch M.H., Guermazi M., Mezghanni M., Ghroubi S., Fki H., Mefteh S., Et al., Knee osteoarthritis in 50 former top-level soccer players: a comparative study, Ann Readapt Med Phys, 51, pp. 174-178, (2008); Kuijt M.T., Inklaar H., Gouttebarge V., Frings-Dresen M.H., Knee and ankle osteoarthritis in former elite soccer players: a systematic review of the recent literature, J Sci Med Sport, 15, pp. 480-487, (2012); Toivanen A.T., Heliovaara M., Impivaara O., Arokoski J.P., Knekt P., Lauren H., Et al., Obesity, physically demanding work and traumatic knee injury are major risk factors for knee osteoarthritis—a population-based study with a follow-up of 22 years, Rheumatology (Oxford), 49, pp. 308-314, (2010); Cooper C., Snow S., McAlindon T.E., Kellingray S., Stuart B., Coggon D., Et al., Risk factors for the incidence and progression of radiographic knee osteoarthritis, Arthritis Rheum, 43, pp. 995-1000, (2000); Felson D.T., Lawrence R.C., Dieppe P.A., Hirsch R., Helmick C.G., Jordan J.M., Et al., Osteoarthritis: new insights. Part 1: the disease and its risk factors, Ann Intern Med, 133, pp. 635-646, (2000)","G.H. Welsch; UKE Athleticum, University Hospital Hamburg-Eppendorf, Hamburg, Germany; email: g.welsch@uke.de","","SAGE Publications Inc.","19476035","","","29448816","English","Cartilage","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-85042105779" "Katis A.; Giannadakis E.; Kannas T.; Amiridis I.; Kellis E.; Lees A.","Katis, Athanasios (23135001400); Giannadakis, Emmanouil (55362732600); Kannas, Theodoros (35737388200); Amiridis, Ioannis (6602623958); Kellis, Eleftherios (6603815400); Lees, Adrian (7202900498)","23135001400; 55362732600; 35737388200; 6602623958; 6603815400; 7202900498","Mechanisms that influence accuracy of the soccer kick","2013","Journal of Electromyography and Kinesiology","23","1","","125","131","6","37","10.1016/j.jelekin.2012.08.020","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84873160356&doi=10.1016%2fj.jelekin.2012.08.020&partnerID=40&md5=6bc3c9ae42cd93dcd03a95ca274a41b4","Aristotle University of Thessaloniki, Laboratory of Neuromechanics, Department of Physical Education and Sport Sciences of Serres, Serres, Greece; Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom","Katis A., Aristotle University of Thessaloniki, Laboratory of Neuromechanics, Department of Physical Education and Sport Sciences of Serres, Serres, Greece; Giannadakis E., Aristotle University of Thessaloniki, Laboratory of Neuromechanics, Department of Physical Education and Sport Sciences of Serres, Serres, Greece; Kannas T., Aristotle University of Thessaloniki, Laboratory of Neuromechanics, Department of Physical Education and Sport Sciences of Serres, Serres, Greece; Amiridis I., Aristotle University of Thessaloniki, Laboratory of Neuromechanics, Department of Physical Education and Sport Sciences of Serres, Serres, Greece; Kellis E., Aristotle University of Thessaloniki, Laboratory of Neuromechanics, Department of Physical Education and Sport Sciences of Serres, Serres, Greece; Lees A., Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom","Goal scoring represents the ultimate purpose of soccer and this is achieved when players perform accurate kicks. The purpose of the present study was to compare accurate and inaccurate soccer kicks aiming to top and bottom targets. Twenty-one soccer players performed consecutive kicks against top and bottom targets (0.5m2) placed in the center of the goal. The kicking trials were categorized as accurate or inaccurate. The activation of tibialis anterior (TA), rectus femoris (RF), biceps femoris (BF) and gastrocnemius muscle (GAS) of the swinging leg and the ground reaction forces (GRFs) of the support leg were analyzed. The GRFs did not differ between kicking conditions (P>0.05). There was significantly higher TA and BF and lower GAS EMG activity during accurate kicks to the top target (P<0.05) compared with inaccurate kicks. Furthermore, there was a significantly lower TA and RF activation during accurate kicks against the bottom target (P<0.05) compared with inaccurate kicks. Enhancing muscle activation of the TA and BF and reducing GAS activation may assist players to kick accurately against top targets. In contrast, players who display higher TA and RF activation may be less accurate against a bottom target. It was concluded that muscle activation of the kicking leg represents a significant mechanism which largely contributes to soccer kick accuracy. © 2012 Elsevier Ltd.","EMG; GRFs; Kicking accuracy; Soccer","Athletic Performance; Humans; Knee Joint; Male; Muscle Contraction; Muscle, Skeletal; Postural Balance; Range of Motion, Articular; Soccer; Young Adult; accuracy; adult; article; athlete; biceps femoris muscle; biomechanics; electromyography; gastrocnemius muscle; ground reaction force; human; human experiment; leg movement; leg muscle; male; muscle contraction; normal human; priority journal; rectus femoris muscle; soccer kick; sport; tibialis anterior muscle","Abt G., Dickson G., Mummery W.K., Goal scoring patterns over the course of a match: an analysis of the Australian National Soccer League, Science and football IV, pp. 106-111, (2002); Asai T., Carre M., Akatsuka T., Haake S., The curve kick of a football I: impact with the foot, Sports Eng, 5, pp. 183-192, (2002); Barfield W., Effects of selected kinematic and kinetic variables on instep kicking with dominant and nondominant limbs, J Hum Mov Stud, 29, pp. 251-272, (1995); Bernstein N., The coordination and regulation of movements, (1967); Brophy R.H., Backus S.I., Pansy B.S., Lyman S., Williams R.J., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, J Orthop Sports Physic Therapy, 37, pp. 260-268, (2007); Carre M.J., Asai T., Akatsuka T., Haake S.J., The curve kick of a football II: flight through the air, Sports Eng, 5, pp. 193-200, (2002); De Proft E., Clarys J., Bollens E., Cabri J., Dufour W., Muscle activity in the soccer kick, Science and football, pp. 434-440, (1988); Dorge H.C., Andresen T.B., Sorensen H., Simonsen E.B., Aagaard H., Dyhre-Poulsen P., Et al., EMG activity of the illiopsoas muscle and leg kinetics during the soccer place kick, Scand J Med Sci Sports, 9, pp. 195-200, (1999); Giagazoglou P., Katis A., Kellis E., Natsikas C., Differences in soccer kick kinematics between blind players and controls, Adapt Phys Activ Quart, 28, pp. 251-266, (2011); Fautrelle L., Ballay Y., Bonnetblanc F., Muscular synergies during motor corrections: Investigation of the latencies of muscle activities, Behav Brain Res, 214, pp. 428-436, (2010); Katis A., Kellis E., Three-dimensional kinematics and ground reaction forces during the instep and outstep soccer kicks in pubertal players, J Sports Sci, 28, pp. 1233-1241, (2010); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J Sports Sci Med, 6, pp. 154-165, (2007); Kellis E., Katis A., The relationship between isokinetic knee extension and flexion strength with soccer kick kinematics: an electromyographic evaluation, J Sport Med Phys Fitness, 47, pp. 385-394, (2007); Kellis E., Katis A., Vrabas I., Effects of an intermittent exercise fatigue protocol on biomechanics of soccer kick performance, Scand J Med Sci Sports, 16, pp. 334-344, (2006); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Med Sci Sports Exerc, 36, pp. 1017-1028, (2004); Lees A., Nolan L., The biomechanics of soccer: a review, J Sports Sci, 16, pp. 211-234, (1998); Lees A., Nolan L., Three-dimensional kinematic analysis of the instep kick under speed and accuracy conditions, Science and football IV, pp. 16-21, (2002); Lees A., Asai T., Andresen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: a review, J Sports Sci, 28, pp. 805-817, (2010); Mohr M., Krustrup P., Bangsbo J., Fatigue in soccer: a brief review, J Sports Sci, 23, pp. 593-599, (2005); Prassas S.G., Terauds J., Nathan T., Three dimensional kinematic analysis of high and low trajectory kicks in soccer, Proceedings of the VIIIth symposium of the international society of biomechanics in sports, pp. 145-149, (1990); Rahnama N., Reilly T., Lees A., Graham-Smith P., Muscle fatigue induced by exercise simulating the work rate of competitive soccer, J Sports Sci, 21, pp. 933-942, (2003); Savelsbergh G.J.P., van der Kamp J., Information in learning to coordinate and control movements: is there a need for specificity of practice?, Int J Sport Psychol, 31, pp. 476-484, (2000); Scurr J., Abbott V., Ball N., Quadriceps EMG muscle activation during accurate soccer instep kicking, J Sports Sci, 29, pp. 247-251, (2011); Scurr J., Hall B., The effects of approach angle on penalty kicking accuracy and kick kinematics with recreational soccer players, J Sports Sci Med, 2, pp. 230-234, (2009); Teixeira L.A., Kinematics of kicking as a function of different sources of constraint on accuracy, Percept Mot Skills, 88, pp. 785-788, (1999); Tsaousidis N., Zatsiorsky V., Two types of ball-effector interaction and their relative contribution to soccer kicking, Hum Mov Sci, 15, pp. 861-876, (1996)","A. Katis; 53100 Florina, Monastiriou 114, Greece; email: akatis@phed-sr.auth.gr","","","18735711","","JEKIE","23021602","English","J. Electromyogr. Kinesiology","Article","Final","","Scopus","2-s2.0-84873160356" "Van Doormaal M.C.M.; Van Der Horst N.; Backx F.J.G.; Smits D.-W.; Huisstede B.M.A.","Van Doormaal, Mitchell C.M. (57192873769); Van Der Horst, Nick (55385710500); Backx, Frank J.G. (6603357863); Smits, Dirk-Wouter (26041069500); Huisstede, Bionka M.A. (12804861100)","57192873769; 55385710500; 6603357863; 26041069500; 12804861100","No Relationship between Hamstring Flexibility and Hamstring Injuries in Male Amateur Soccer Players","2017","American Journal of Sports Medicine","45","1","","121","126","5","25","10.1177/0363546516664162","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85008449919&doi=10.1177%2f0363546516664162&partnerID=40&md5=3d20c759e0d1c35f6ec4ed18fbdd5141","Department of Rehabilitation, Nursing Science and Sports, Rudolf Magnus Institute of Neurosciences, University Medical Center Utrecht, PO Box 85500, Utrecht, 3508 GA, Netherlands","Van Doormaal M.C.M., Department of Rehabilitation, Nursing Science and Sports, Rudolf Magnus Institute of Neurosciences, University Medical Center Utrecht, PO Box 85500, Utrecht, 3508 GA, Netherlands; Van Der Horst N., Department of Rehabilitation, Nursing Science and Sports, Rudolf Magnus Institute of Neurosciences, University Medical Center Utrecht, PO Box 85500, Utrecht, 3508 GA, Netherlands; Backx F.J.G., Department of Rehabilitation, Nursing Science and Sports, Rudolf Magnus Institute of Neurosciences, University Medical Center Utrecht, PO Box 85500, Utrecht, 3508 GA, Netherlands; Smits D.-W., Department of Rehabilitation, Nursing Science and Sports, Rudolf Magnus Institute of Neurosciences, University Medical Center Utrecht, PO Box 85500, Utrecht, 3508 GA, Netherlands; Huisstede B.M.A., Department of Rehabilitation, Nursing Science and Sports, Rudolf Magnus Institute of Neurosciences, University Medical Center Utrecht, PO Box 85500, Utrecht, 3508 GA, Netherlands","Background: In soccer, although hamstring flexibility is thought to play a major role in preventing hamstring injuries, the relationship between hamstring flexibility and hamstring injuries remains unclear. Purpose: To investigate the relationship between hamstring flexibility and hamstring injuries in male amateur soccer players. Study Design: Case-control study; Level of evidence, 3. Methods: This study included 450 male first-class amateur soccer players (mean age, 24.5 years). Hamstring flexibility was measured by performing the sit-and-reach test (SRT). The relationship between hamstring flexibility and the occurrence of hamstring injuries in the following year, while adjusting for the possible confounding effects of age and previous hamstring injuries, was determined with a multivariate logistic regression analysis. Results: Of the 450 soccer players, 21.8% reported a hamstring injury in the previous year. The mean (±SD) baseline score for the SRT was 21.2 ± 9.2 cm. During the 1-year follow-up period, 23 participants (5.1%) suffered a hamstring injury. In the multivariate analysis, while adjusting for age and previous injuries, no significant relationship was found between hamstring flexibility and hamstring injuries (P =.493). Conclusion: In this group of soccer players, hamstring flexibility (measured with the SRT) was not related to hamstring injuries. Age and previous hamstring injuries as possible confounders did not appear to influence this relationship. Other etiological factors need to be examined to further elucidate the mechanism of hamstring injuries. © 2016 The Author(s).","biomechanics; football (soccer); hamstring flexibility; hip/pelvis/thigh; muscle injuries","Adult; Case-Control Studies; Hamstring Muscles; Hamstring Tendons; Humans; Male; Netherlands; Prospective Studies; Soccer; Young Adult; adult; case control study; hamstring muscle; hamstring tendon; human; injuries; male; Netherlands; physiology; prospective study; soccer; young adult","Joint Motion: Method of Measuring and Recording, (1965); Arnason A., Sigurdsson S.B., Gudmundsson A., Holme I., Engebretsen L., Bahr R., Risk factors for injuries in football, Am J Sports Med, 32, pp. 5S-16S, (2004); Ayala F., Sainz D., Baranda P., De Ste Croix M., Santonja F., Absolute reliability of five clinical tests for assessing hamstring flexibility in professional futsal players, J Sci Med Sport, 15, pp. 142-147, (2012); Ayala F., Sainz D., Baranda P., De Ste Croix M., Santonja F., Reproducibility and criterion-related validity of the sit and reach test and toe touch test for estimating hamstring flexibility in recreationally active young adults, Phys Ther Sport, 13, pp. 219-226, (2012); Chumanov E.S., Heiderscheit B.C., Thelen D.G., The effect of speed and influence of individual muscles on hamstring mechanics during the swing phase of sprinting, J Biomech, 40, pp. 3555-3562, (2007); Chumanov E.S., Heiderscheit B.C., Thelen D.G., Hamstring musculotendon dynamics during stance and swing phases of high-speed running, Med Sci Sports Exerc, 43, pp. 525-532, (2011); Clark R.A., Hamstring injuries: Risk assessment and injury prevention, Ann Acad Med Singapore, 37, pp. 341-346, (2008); Davis D.S., Quinn R.O., Whiteman C.T., Williams J.D., Young C.R., Concurrent validity of four clinical tests used to measure hamstring flexibility, J Strength Cond Res, 22, pp. 583-588, (2008); Ekstrand J., Hagglund M., Walden M., Epidemiology of muscle injuries in professional football (soccer), Am J Sports Med, 39, pp. 1226-1232, (2011); Ekstrand J., Walden M., Hagglund M., Hamstring injuries have increased by 4% annually in men's professional football, since 2001: A 13-year longitudinal analysis of the UEFA Elite Club injury study, Br J Sports Med; Engebretsen A.H., Myklebust G., Holme I., Engebretsen L., Bahr R., Intrinsic risk factors for hamstring injuries among male soccer players: A prospective cohort study, Am J Sports Med, 38, pp. 1147-1153, (2010); Freckleton G., Pizzari T., Risk factors for hamstring muscle strain injury in sport: A systematic review and meta-analysis, Br J Sports Med, 47, pp. 351-358, (2013); Fuller C.W., Ekstrand J., Junge A., Et al., Consensus statement on injury definitions and data collection procedures in studies of football (soccer) injuries, Clin J Sport Med, 16, pp. 97-106, (2006); Gabbe B.J., Bennell K.L., Finch C.F., Why are older Australian football players at greater risk of hamstring injury?, J Sci Med Sport, 9, pp. 327-333, (2006); Gabbe B.J., Bennell K.L., Finch C.F., Wajswelner H., Orchard J.W., Predictors of hamstring injury at the elite level of Australian football, Scand J Med Sci Sports, 16, pp. 7-13, (2006); Gabbe B.J., Bennell K.L., Wajswelner H., Finch C.F., Reliability of common lower extremity musculoskeletal screening tests, Phys Ther Sport, 5, pp. 90-97, (2004); Hallen A., Ekstrand J., Return to play following muscle injuries in professional footballers, J Sports Sci, 32, pp. 1229-1236, (2014); Haskell W.L., Blair S.N., Hill J.O., Physical activity: Health outcomes and importance for public health policy, Prev Med, 49, pp. 280-282, (2009); Henchoz Y., Baggio S., N'Goran A.A., Et al., Health impact of sport and exercise in emerging adult men: A prospective study, Qual Life Res, 23, pp. 2225-2234, (2014); Lee M.J., Reid S.L., Elliott B.C., Lloyd D.G., Running biomechanics and lower limb strength associated with prior hamstring injury, Med Sci Sports Exerc, 41, pp. 1942-1951, (2009); Lopez-Minarro P.A., Sainz D., Baranda P., Rodriguez-Garcia P.L., Yuste J.L., Comparison between sit-and-reach test and v sit-and-reach test in young adults, Gazz Med Ital Arch Sci Med, 167, pp. 135-142, (2008); Mayorga-Vega D., Merino-Marban R., Viciana J., Criterion-related validity of sit-and-reach tests for estimating hamstring and lumbar extensibility: A meta-analysis, J Sports Sci Med, 13, pp. 1-14, (2014); McCall A., Carling C., Nedelec M., Et al., Risk factors, testing and preventative strategies for non-contact injuries in professional football: Current perceptions and practices of 44 teams from various premier leagues, Br J Sports Med, 48, pp. 1352-1357, (2014); Peduzzi P., Concato J., Kemper E., Holford T.R., Feinstein A.R., A simulation study of the number of events per variable in logistic regression analysis, J Clin Epidemiol, 49, pp. 1373-1379, (1996); Petersen J., Thorborg K., Nielsen M.B., Holmich P., Acute hamstring injuries in Danish elite football: A 12-month prospective registration study among 374 players, Scand J Med Sci Sports, 20, pp. 588-592, (2010); Rodriguez-Garcia P.L., Lopez-Minarro P.A., Yuste J.L., Sainz D., Baranda P., Comparison of hamstring criterion-related validity, sagittal spinal curvatures, pelvic tilt and score between sit-and-reach and toe-touch tests in athletes, Medicina Dello Sport, 61, pp. 11-20, (2008); Schache A.G., Dorn T.W., Blanch P.D., Brown N.A., Pandy M.G., Mechanics of the human hamstring muscles during sprinting, Med Sci Sports Exerc, 44, pp. 647-658, (2012); Van Beijsterveldt A.M., Van D., Port I.G., Krist M.R., Et al., Effectiveness of an injury prevention programme for adult male amateur soccer players: A cluster-randomised controlled trial, Br J Sports Med, 46, pp. 1114-1118, (2012); Van Beijsterveldt A.M., Van De Port I.G., Vereijken A.J., Backx F.J., Risk factors for hamstring injuries in male soccer players: A systematic review of prospective studies, Scand J Med Sci Sports, 23, pp. 253-262, (2013); Van Der Horst N., Smits D.W., Petersen J., Goedhart E.A., Backx F.J., The preventive effect of the Nordic hamstring exercise on hamstring injuries in amateur soccer players: A randomized controlled trial, Am J Sports Med, 43, pp. 1316-1323, (2015); Van Der Horst N., Smits D.W., Petersen J., Goedhart E.A., Backx F.J., The preventive effect of the Nordic hamstring exercise on hamstring injuries in amateur soccer players: Study protocol for a randomised controlled trial, Inj Prev, 20, 4, (2014); Witvrouw E., Danneels L., Asselman P., D'Have T., Cambier D., Muscle flexibility as a risk factor for developing muscle injuries in male professional soccer players: A prospective study, Am J Sports Med, 31, pp. 41-46, (2003); Woodley S.J., Mercer S.R., Hamstring muscles: Architecture and innervation, Cells Tissues Organs, 179, pp. 125-141, (2005)","B.M.A. Huisstede; Department of Rehabilitation, Nursing Science and Sports, Rudolf Magnus Institute of Neurosciences, University Medical Center Utrecht, Utrecht, PO Box 85500, 3508 GA, Netherlands; email: b.m.a.huisstede@umcutrecht.nl","","SAGE Publications Inc.","03635465","","AJSMD","27582278","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-85008449919" "Tscholl P.; O'Riordan D.; Fuller C.W.; Dvorak J.; Gutzwiller F.; Junge A.","Tscholl, Philippe (18435147900); O'Riordan, D. (57198038899); Fuller, C.W. (7202433422); Dvorak, J. (7202106693); Gutzwiller, F. (7102528600); Junge, A. (7006011216)","18435147900; 57198038899; 7202433422; 7202106693; 7102528600; 7006011216","Causation of injuries in female football players in top-level tournaments","2007","British Journal of Sports Medicine","41","SUPPL. 1","","i8","i14","6","28","10.1136/bjsm.2007.036871","https://www.scopus.com/inward/record.uri?eid=2-s2.0-34547684121&doi=10.1136%2fbjsm.2007.036871&partnerID=40&md5=7a6fc24943c5757c98d657d8ac153573","Schulthess Klinik, CH-8008 Zurich, Lengghalde 2, Switzerland; FIFA Medical Assessment and Research Center (F-MARC), Zurich, Switzerland; Schulthess Klinik, Zurich, Switzerland; Centre for Sports Medicine, University of Nottingham, Nottingham, United Kingdom; Institute of Social and Preventive Medicine, University of Zurich, Switzerland","Tscholl P., Schulthess Klinik, CH-8008 Zurich, Lengghalde 2, Switzerland, FIFA Medical Assessment and Research Center (F-MARC), Zurich, Switzerland, Schulthess Klinik, Zurich, Switzerland; O'Riordan D., FIFA Medical Assessment and Research Center (F-MARC), Zurich, Switzerland, Schulthess Klinik, Zurich, Switzerland; Fuller C.W., Centre for Sports Medicine, University of Nottingham, Nottingham, United Kingdom; Dvorak J., FIFA Medical Assessment and Research Center (F-MARC), Zurich, Switzerland, Schulthess Klinik, Zurich, Switzerland; Gutzwiller F., Institute of Social and Preventive Medicine, University of Zurich, Switzerland; Junge A., FIFA Medical Assessment and Research Center (F-MARC), Zurich, Switzerland, Schulthess Klinik, Zurich, Switzerland","Background: Analyses of tackle parameters in injury situations have provided valuable information regarding men's football. However, there are no similar data for women's football. Objective: To categorise the tackle mechanisms leading to injury in elite women's football. Study design: Retrospective video analysis of injury situations. Methods: Events associated with all reported injuries during six women's top-level tournaments were analysed on video recordings for tackle parameters. Results: More than half of all injuries were due to tackles from the side (52%, 103/200), whereas tackles from behind were much less commonly involved in injury situations (11%, 21/200). One-footed (65%, 130/200) and upper body (21%, 42/200) tackle actions were most common. Sliding-in tackles leading to injury were the least likely to be sanctioned by match referees. Tackling players (45%, 90/200) were almost as likely to be injured as the tackled player (55%). Conclusion: The present study found differences between injury mechanisms in women's football and previously published data on men's football. Further research, especially using video analysis, is needed for a better understanding of risk situations in football.","","Adolescent; Adult; Athletic Injuries; Biomechanics; Female; Humans; Incidence; Male; Retrospective Studies; Soccer; Video Recording; Women's Health; ankle injury; article; football; head and neck injury; human; jumping; leg injury; sport injury; sporting event; videorecording","Hawkins R.D., Fuller C.W., A prospective epidemiological study of injuries in four English professional football clubs, Br J Sports Med, 33, pp. 196-203, (1999); Hawkins R.D., Hulse M.A., Wilkinson C., Et al., The association football medical research programme: An audit of injuries in professional football, Br J Sports Med, 35, pp. 43-47, (2001); Bahr R., Kannus P., van Mechelen W., Epidemiology and prevention of sports injuries, Textbook of sports medicine: Basic science and clinical aspects of sports injury and physical activity, pp. 299-314, (2003); Hoy K., Lindblad B.E., Terkelsen C.J., Et al., European soccer injuries. A prospective epidemiologic and socioeconomic study, Am J Sports Med, 20, pp. 318-322, (1992); Andersen T.E., Engebretsen L., Bahr R., Rule violations as a cause of injuries in male norwegian professional football: Are the referees doing their job?, Am J Sports Med, 32, SUPPL. 1, (2004); Andersen T.E., Larsen O., Tenga A., Et al., Football incident analysis: A new video based method to describe injury mechanisms in professional football, Br J Sports Med, 37, pp. 226-232, (2003); Junge A., Dvorak J., Graf-Baumann T., Et al., Football injuries during FIFA tournaments and the Olympic Games, 1998-2001: Development and implementation of an injury-reporting system, Am J Sports Med, 32, SUPPL. 1, (2004); Kucera K.L., Marshall S.W., Kirkendall D.T., Et al., Injury history as a risk factor for incident injury in youth soccer, Br J Sports Med, 39, (2005); Peterson L., Junge A., Chomiak J., Et al., Incidence of football injuries and complaints in different age groups and skill-level groups, Am J Sports Med, 28, SUPPL. 5, (2000); Yoon Y.S., Chai M., Shin D.W., Football injuries at Asian tournaments, Am J Sports Med, 32, SUPPL. 1, (2004); Hawkins R.D., Fuller C.W., Risk assessment in professional football: An examination of accidents and incidents in the 1994 World Cup finals, Br J Sports Med, 30, pp. 165-170, (1996); Fuller C.W., Smith G.L., Junge A., Et al., The influence of tackle parameters on the propensity for injury in international football, Am J Sports Med, 32, SUPPL. 1, (2004); Arnason A., Tenga A., Engebretsen L., Et al., A prospective video-based analysis of injury situations in elite male football: Football incident analysis, Am J Sports Med, 32, pp. 1459-1465, (2004); Fuller C.W., Junge A., Dvorak J., A six year prospective study of the incidence and causes of head and neck injuries in international football, Br J Sports Med, 39, SUPPL. I, (2005); Biedert R.M., Bachmann M., Frauenfussball - Verletzungen, Risiken und Prävention [Women's soccer. Injuries, risks, and prevention] [article in German], Orthopäde, 34, pp. 448-453, (2005); Tscholl P., O'Riordan D., Fuller C.W., Et al., Tackling mechanism and match characteristics in women's elite football tournaments, Br J Sports Med, 41, SUPPL. 1, (2007); Faude O., Junge A., Kindermann W., Et al., Injuries in female soccer players: A prospective study in the German national league, Am J Sports Med, 33, pp. 1694-1700, (2005); Ekstrand J., Gillquist J., Moller M., Et al., Incidence of soccer injuries and their relation to training and team success, Am J Sports Med, 11, pp. 63-67, (1983); Jacobson I., Tegner Y., Injuries among Swedish female elite football players: A prospective population study, Scand J Med Sci Sports, 17, pp. 84-91, (2007); Giza E., Mithofer K., Farrell L., Et al., Injuries in women's professional soccer, Br J Sports Med, 39, pp. 212-216, (2005); Junge A., Dvorak J., Injuries in female football players in top-level international tournaments, Br J Sports Med, 41, SUPPL. 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A review of concepts, Sports Med, 14, pp. 82-99, (1992); Fuller C.W., Ekstrand J., Junge A., Et al., Consensus statement on injury definitions and data collection procedures in studies of football (soccer) injuries, Scand J Med Sci Sports, 16, pp. 83-92, (2006); Statistics: FIFA Women's World Cup USA 1999, (1999); Statistics: Olympic Football Tournaments Sydney 2000, (2000); Statistics: FIFA Women's Under-19 World Championship Thailand 2002, (2002); Statistics: FIFA Women's World Cup USA 2003, (2003); Statistics: Olympic Women's Football Tournament Athens 2004, (2004); Statistics: FIFA Women's Under-19 World Championship Canada 2004, (2004); Junge A., Dvorak J., Graf-Baumann T., Football injuries during the World Cup 2002, Am J Sports Med, 32, SUPPL. 1, (2004); Dvorak J., Junge A., Football injuries and physical symptoms. A review of the literature, Am J Sports Med, 28, SUPPL. 5, (2000); Emery C.A., Meeuwisse W.H., Hartmann S.E., Evaluation of risk factors for injury in adolescent soccer, Am J Sports Med, 33, pp. 1882-1891, (2005); Hagglund M., Walden M., Ekstrand J., Exposure and injury risk in Swedish elite football: A comparison between seasons 1982 and 2001, Scand J Med Sci Sports, 13, pp. 364-370, (2003); Soderman K., Werner S., Pietila T., Et al., Balance board training: Prevention of traumatic injuries of the lower extremities in female soccer players? A prospective randomized intervention study, Knee Surg Sports Traumatol Arthrosc, 8, pp. 356-363, (2000); Askling C., Karlsson J., Thorstensson A., Hamstring injury occurrence in elite soccer players after preseason strength training with eccentric overload, Scand J Med Sci Sports, 13, pp. 244-250, (2003); Arnason A., Engebretsen L., Bahr R., No effect of a video-based awareness program on the rate of soccer injuries, Am J Sports Med, 33, pp. 77-84, (2005); Rahnama N., Reilly T., Lees A., Injury risk associated with playing actions during competitive soccer, Br J Sports Med, 36, pp. 354-359, (2002); Fuller C.W., Junge A., Dvorak J., An assessment of football referees' decisions in incidents leading to player injuries, Am J Sports Med, 32, SUPPL. 1, (2004); Helsen W., Bultynck J.B., Physical and perceptual-cognitive demands of top-class refereeing in association football, J Sports Sci, 22, pp. 179-189, (2004); Laws of the Game, (2005); Chomiak J., Junge A., Peterson L., Et al., Severe injuries in football players. Influencing factors, Am J Sports Med, 28, SUPPL. 5, (2000); Pilz G.A., Performance sport: Education in fair play? (Some empirical and theoretical remarks), Int Rev Soc Sport, 30, pp. 391-418, (1995); Price R.J., Hawkins R.D., Hulse M.A., Et al., The Football Association medical research programme: An audit of injuries in academy youth football, Br J Sports Med, 38, pp. 466-471, (2004); Junge A., Dvorak J., Chomiak J., Et al., Medical history and physical findings in football players of different ages and skill levels, Am J Sports Med, 28, SUPPL. 5, (2000); Berbig R., Biener K., bei Fussballtorhutern S., Schweiz Zeitschr Sports Med, 31, pp. 73-79, (1983)","P. Tscholl; Schulthess Klinik, CH-8008 Zurich, Lengghalde 2, Switzerland; email: philippe.tscholl@access.unizh.ch","","","03063674","","BJSMD","17646251","English","Br. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-34547684121" "Condello G.; Kernozek T.W.; Tessitore A.; Foster C.","Condello, Giancarlo (36503886300); Kernozek, Thomas W. (6604024019); Tessitore, Antonio (57208901838); Foster, Carl (55234307300)","36503886300; 6604024019; 57208901838; 55234307300","Biomechanical analysis of a change-of-direction task in college soccer players","2016","International Journal of Sports Physiology and Performance","11","1","","96","101","5","32","10.1123/ijspp.2014-0458","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84957990890&doi=10.1123%2fijspp.2014-0458&partnerID=40&md5=ea46c84738ac4ecded118b919e148171","Dept of Movement, Human and Health Sciences, University of Rome Foro Italico, Rome, Italy; Dept of Health Professions, University of Wisconsin-La Crosse, La Crosse, WI, United States; Dept of Exercise and Sports Science, University of Wisconsin-La Crosse, La Crosse, WI, United States","Condello G., Dept of Movement, Human and Health Sciences, University of Rome Foro Italico, Rome, Italy; Kernozek T.W., Dept of Health Professions, University of Wisconsin-La Crosse, La Crosse, WI, United States; Tessitore A., Dept of Movement, Human and Health Sciences, University of Rome Foro Italico, Rome, Italy; Foster C., Dept of Exercise and Sports Science, University of Wisconsin-La Crosse, La Crosse, WI, United States","This study aimed to investigate biomechanical parameters during a change-of-direction task in college soccer players. Fourteen male and 12 female players performed a 10-m sprint with a 60° change of direction at 5 m. Vertical and mediolateral groundreaction force (GRF) and contact time were measured by having the subjects run in both directions while contacting a force plate with either their preferred (kicking) or nonpreferred leg. Using the midpoint between 2 pelvic markers, further parameters were evaluated: performance cutting angle and horizontal distance. Relationships between parameters, sex, and leg preference were analyzed. Significant correlations emerged between vertical and mediolateral GRF (r =.660-.909) and between contact time and performance cutting angle (r =-.598 to-.793). Sex differences were found for mediolateral GRF (P =.005), performance cutting angle (P =.043), and horizontal distance (P =.020). Leg differences were observed for vertical GRF (P =.029), performance cutting angle (P =.011), and horizontal distance (P =.012). This study showed that a sharper change of direction corresponded to a longer contact time, while no relationships were found with GRF. Moreover, measuring the angle revealed that the real path traveled was different from the theoretical one, highlighting the performance of sharper or more rounded execution. In conclusion, this study showed that specific biomechanical measurements can provide details about the execution of a change of direction, highlighting the ability of the nonpreferred leg to perform better directional changes. © 2016 Human Kinetics, Inc.","Biomechanics; Cutting angle; Ground-reaction force; Leg preference; Sex","Biomechanical Phenomena; Cross-Sectional Studies; Female; Humans; Kinetics; Leg; Male; Motor Skills; Movement; Running; Sex Factors; Soccer; Young Adult; athlete; college; female; human; human experiment; leg; male; sex difference; theoretical model; biomechanics; cross-sectional study; kinetics; motor performance; movement (physiology); physiology; running; soccer; young adult","Sheppard J.M., Young W.B., Agility literature review: Classification, training and testing, J Sports Sci., 24, pp. 919-932, (2006); Young W.B., James R., Montgomery I., Is muscle power related to running speed with changes of direction?, J Sports Med Phys Fitness., 42, pp. 282-288, (2002); Vescovi J.D., Agility. NSCA Hot Topic Series., (2006); Brughelli M., Cronin J., Levin G., Chaouachi A., Understanding change of direction ability in sport: A review of resistance training studies, Sports Med., 38, pp. 1045-1063, (2008); Young W.B., Hawken M., McDonald L., Relationship between speed, agility, and strength qualities in Australian rules football, Strength Cond Coach., 4, pp. 3-6, (1996); Mc Lean S.G., Lipfert S.W., Van Den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc., 36, pp. 1008-1016, (2004); Green B.S., Blake C., Caulfeld B.M., A comparison of cutting technique performance in rugby union players, J Strength Cond Res., 25, pp. 2668-2680, (2011); Besier T.F., Lloyd D.G., Ackland T.R., Cochrane J.L., Anticipatory effects on knee joint loading during running and cutting maneuvers, Med Sci Sports Exerc., 33, pp. 1176-1181, (2001); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc., 33, pp. 1168-1175, (2001); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Med Sci Sports Exerc., 37, pp. 124-129, (2005); Landry S.C., McKean K.A., Hubley-Kozey C.L., Stanish W.D., Deluzio K.J., Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated side-cut maneuver, Am J Sports Med., 35, pp. 1888-1900, (2007); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Med Sci Sports Exerc., 35, pp. 119-127, (2003); Cowley H.R., Ford K.R., Myer G.D., Kernozek T.W., Hewett T.E., Differences in neuromuscular strategies between landing and cutting tasks in female basketball and soccer athletes, J Athl Train., 41, pp. 67-73, (2006); Spiteri T., Cochrane J.L., Hart N.H., Haff G.G., Nimphius S., Effect of strength on plant foot kinetics and kinematics during a change of direction task, Eur J Sport Sci., 13, pp. 646-652, (2013); Singh I., Functional asymmetry in the lower limbs, Acta Anat (Basel)., 77, pp. 131-138, (1970); Dorge H.C., Anderson T.B., Sorensen H., Simonsen E.B., Biome-chanical differences in soccer kicking with the preferred and the non-preferred leg, J Sports Sci., 20, pp. 293-299, (2002); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Seg-mental dynamics of soccer instep kicking with the preferred and non-preferred leg, J Sports Sci., 24, pp. 529-541, (2006); Gstottner M., Neher A., Scholtz A., Millonig M., Lembert S., Raschner C., Balance ability and muscle response of the preferred and nonpreferred leg in soccer players, Motor Control., 13, 2, pp. 218-231, (2009); Meylan C., McMaster T., Cronin J., Mohammad N.I., Rogers C., Deklerk M., Single-leg lateral, horizontal, and vertical jump assessment: Reliability, interrelationships, and ability to predict sprint and change-of-direction performance, J Strength Cond Res., 23, pp. 1140-1147, (2009); Condello G., Minganti C., Lupo C., Benvenuti C., Pacini D., Tessitore A., Evaluation of change-of-direction movements in young rugby players, Int J Sports Physiol Perform., 8, 1, pp. 52-56, (2013); Laughlin W.A., Weinhandl J.T., Kernozek T.W., Cobb S.C., Keenan K.G., O'Connor K.M., The effects of single-leg landing technique on ACL loading, J Biomech., 44, pp. 1845-1851, (2011); Monaghan K., Delahunt E., Caulfeld B., Increasing the number of gait trial recordings maximises intra-rater reliability of the CODA motion analysis system, Gait Posture., 25, pp. 303-315, (2007); Condello G., Schultz K., Tessitore A., Assessment of sprint and change-of-direction performance in college football players, Int J Sports Physiol Perform., 8, 2, pp. 211-212, (2013); Portney L., Watkins M., Foundations of Clinical Research: Application to Practice, (2000); Cohen J., Statistical Power Analysis of the Behavioral Sciences. 2nd Ed, (1988); Butler R.J., Crowell H.P., Davis I.M., Lower extremity stiffness: Implications for performance and injury, Clin Biomech (Bristol, Avon)., 18, pp. 511-517, (2003); Inaba Y., Yoshioka S., Iida Y., Hay D.C., Fukashiro S., A biome-chanical study of side steps at different distances, J Appl Biomech., 29, pp. 336-345, (2013)","G. Condello; Dept of Movement, Human and Health Sciences, University of Rome Foro Italico, Rome, Italy; email: giancarlo.condello@gmail.com","","Human Kinetics Publishers Inc.","15550265","","","26024552","English","Int. J. Sport Physiol. Perform.","Article","Final","","Scopus","2-s2.0-84957990890" "Read P.J.; Oliver J.L.; Myer G.D.; De Ste Croix M.B.A.; Belshaw A.; Lloyd R.S.","Read, Paul J. (55764420600); Oliver, Jon L. (7401628051); Myer, Gregory D. (6701852696); De Ste Croix, Mark B.A. (6603255583); Belshaw, Angus (57203854680); Lloyd, Rhodri S. (24460583700)","55764420600; 7401628051; 6701852696; 6603255583; 57203854680; 24460583700","Altered landing mechanics are shown by male youth soccer players at different stages of maturation","2018","Physical Therapy in Sport","33","","","48","53","5","26","10.1016/j.ptsp.2018.07.001","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053184842&doi=10.1016%2fj.ptsp.2018.07.001&partnerID=40&md5=dc93350f94be0e3e7ea37c519f08c706","Athlete Health and Performance Research Centre, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; Youth Physical Development Unit, School of Sport, Cardiff Metropolitan University, Cardiff, United Kingdom; Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand; School of Sport and Exercise, University of Gloucestershire, Gloucester, United Kingdom; The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Department of Pediatrics, University of Cincinnati, Cincinnati, OH, United States; Department of Orthopaedic Surgery, University of Cincinnati, Cincinnati, OH, United States; The Micheli Center for Sports Injury Prevention, Waltham, MA, United States; School of Sports Health and Applied Sciences, St Marys University, London, United Kingdom; School of Sport and Health Sciences and Youth Physical Development Centre, Wales, United Kingdom","Read P.J., Athlete Health and Performance Research Centre, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar, Youth Physical Development Unit, School of Sport, Cardiff Metropolitan University, Cardiff, United Kingdom; Oliver J.L., Youth Physical Development Unit, School of Sport, Cardiff Metropolitan University, Cardiff, United Kingdom, Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand; Myer G.D., The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Department of Pediatrics, University of Cincinnati, Cincinnati, OH, United States, Department of Orthopaedic Surgery, University of Cincinnati, Cincinnati, OH, United States, The Micheli Center for Sports Injury Prevention, Waltham, MA, United States; De Ste Croix M.B.A., School of Sport and Exercise, University of Gloucestershire, Gloucester, United Kingdom; Belshaw A., School of Sports Health and Applied Sciences, St Marys University, London, United Kingdom; Lloyd R.S., School of Sport and Health Sciences and Youth Physical Development Centre, Wales, United Kingdom","Objectives: Examine the effects of maturation on single leg jumping performance in elite male youth soccer players. Design: Cross sectional. Setting: Academy soccer clubs. Participants: 347 male youth players classified as either pre, circa or post-peak height velocity (PHV). Main outcome measures: Single leg countermovement jump (SLCMJ) height, peak vertical landing forces (pVGRF), knee valgus and trunk side flexion. Results: Vertical jump height and absolute pVGRF increased with each stage of maturation (p < 0.001; d = 0.85–2.35). Relative to body weight, significantly higher landing forces were recorded on the left leg in circa versus post-PHV players (p < 0.05; d = −0.40). Knee valgus reduced with maturation but the only notable between-group differences were shown in post-PHV players (p < 0.05; d = 0.67); however, greater ipsilateral lateral trunk flexion angles was also present and these differences were significantly increased relative to circa-PHV players (p < 0.05; d = 0.85). Conclusion: Periods of rapid growth are associated with landing kinetics which may heighten injury risk. While reductions in knee valgus were displayed with maturation; a compensatory strategy of greater trunk lateral flexion was evident in post-PHV players and this may increase the risk of injury. © 2018 Elsevier Ltd","","Adolescent; Adolescent Development; Athletes; Biomechanical Phenomena; Child; Cross-Sectional Studies; Humans; Knee Joint; Male; Soccer; Torso; adolescent; adult; Article; body weight; child; cross-sectional study; human; jumping; kinematics; kinetics; landing; male; maturation; peak vertical landing force; physical activity; population risk; priority journal; single leg counter movement jump; soccer player; sport injury; trunk side flexion; valgus knee; adolescent development; athlete; biomechanics; knee; physiology; soccer; trunk","Adrim T.A., Cheng T.L., Overview of injuries in the young athlete, Sports Medicine, 33, pp. 75-81, (2003); Barber-Westin S.D., Noyes F.R., Galloway M., Jump-land characteristics and muscle strength development in young athletes a gender comparison of 1140 athletes 9 to 17 years of age, The American Journal of Sports Medicine, 34, pp. 375-384, (2006); Buchheit M., Mendez-Villanueva A., Simpson B.M., Bourdon P.C., Match running performance and fitness in youth soccer, Int J Sports Med, 31, pp. 818-825, (2010); Cohen J.A., Power primer, Psychological Bulletin, 112, (1992); Crossley K.M., Zhang W.J., Schache A.G., Bryant A., Cowan S.M., Performance on the single-leg squat task indicates hip abductor muscle function, The American Journal of Sports Medicine, 39, pp. 866-873, (2011); DiCesare C.A., Bates N.A., Myer G.D., Hewett T.E., The validity of 2-dimensional measurement of trunk angle during dynamic tasks, Int J Sports Phys Ther, 9, (2014); Dingenen B., Malfait B., Nijs S., Peers K.H.E., Vereecken S., Verschuren S.M.P., Et al., Can two-dimensional video analysis during single-leg drop vertical jumps help identify non-contact knee injury risk? A one-year prospective study, Clinical Biomechanics, 30, pp. 781-787, (2015); Dingenen B., Malfait B., Vanrenterghem J., Verschueren S.M., Staes F.F., The reliability and validity of the measurement of lateral trunk motion in two-dimensional video analysis during unipodal functional screening tests in elite female athletes, Physical Therapy in Sport, 15, pp. 117-123, (2014); Ford K.R., Shapiro R., Myer G.D., van den B.A.J., Hewett T.E., Longitudinal sex differences during landing in knee abduction in young athletes, Medicine & Science in Sports & Exercise, 42, pp. 1923-1931, (2010); Friel K., McLean N., Myers C., Caceres M., Ipsilateral hip abductor weakness after inversion ankle sprain, Journal of Athletic Training, 41, (2006); Hewett T.E., Myer G.D., The mechanistic connection between the trunk, knee, and anterior cruciate ligament injury, Exercise and Sport Sciences Reviews, 39, pp. 161-166, (2011); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, The American Journal of Sports Medicine, 33, pp. 492-501, (2005); Hewett T.E., Myer G.D., Ford K.R., Slauterbeck J.R., Preparticipation physical examination using a box drop vertical jump test in young athletes: The effects of puberty and sex, Clinical Journal of Sport Medicine, 16, pp. 298-304, (2006); Hopkins W.G., How to interpret changes in an athletic performance test, Sportscience, 8, pp. 1-7, (2004); Iga J., George K., Lees A., Cross-sectional investigation of indices of isokinetic leg strength in youth soccer players and untrained individuals, Scandinavian Journal of Medicine & Science in Sports, 19, pp. 714-719, (2009); Linthorne N.P., Analysis of standing vertical jumps using a force platform, American Journal of Physics, 69, pp. 1198-1204, (2001); Malina R.M., Bouchard C., Bar-Or O., Timing and sequence of changes during adolescence, Growth, maturation and physical activity, pp. 307-333, (2004); Mirwald R.L., Baxter-Jones A.D., Bailey D.A., Beunen G.P., An assessment of maturity from anthropometric measurements, Medicine & Science in Sports & Exercise, 34, pp. 689-694, (2002); Myer G.D., Chu D.A., Brent J.E., Hewett T.E., Trunk and hip control neuromuscular training for the prevention of knee joint injury, Clinics in Sports Medicine, 27, pp. 425-448, (2008); Myer G.D., Faigenbaum A.D., Ford K.R., Best T.M., Bergeron M.F., Hewett T.E., When to initiate integrative neuromuscular training to reduce sports-related injuries and enhance health in youth?, Current Sports Medicine Reports, 10, pp. 155-166, (2011); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Development and validation of a clinic-based prediction tool to identify female athletes at high risk for anterior cruciate ligament injury, The American Journal of Sports Medicine, 38, pp. 2025-2033, (2010); Nakagawa T.H., Moriya E.T., Maciel C.D., Serrao F.V., Trunk, pelvis, hip, and knee kinematics, hip strength, and gluteal muscle activation during a single leg squat in males and females with and without patellofemoral pain syndrome, Journal of Orthopaedic & Sports Physical Therapy, 42, pp. 491-501, (2012); Noyes F.R., Barber-Westin S.D., Fleckenstein C., Walsh C., West J., The drop-jump screening test difference in lower limb control by gender and effect of neuromuscular training in female athletes, The American Journal of Sports Medicine, 33, pp. 197-207, (2005); Pappas E., Hagins M., Sheikhzadeh A., Nordin M., Rose D., Biomechanical differences between unilateral and bilateral landings from a jump: Gender differences, Clinical Journal of Sport Medicine, 17, pp. 263-268, (2007); Paterno M.V., Schmitt L.C., Ford K.R., Rauh M.J., Myer G.D., Huang B., Et al., Biomechanical measures during landing and postural stability predict second anterior cruciate ligament injury after anterior cruciate ligament reconstruction and return to sport, The American Journal of Sports Medicine, 38, pp. 1968-1978, (2010); Philippaerts R.M., Vaeyens R., Janssens M., Van Renterghem B., Matthys D., Craen R., Et al., The relationship between peak height velocity and physical performance in youth soccer players, Journal of Sports Sciences, 24, pp. 221-230, (2006); Price R.J., Hawkins R.D., Hulse M.A., Hodson A., The football association medical research programme: An audit of injuries in academy youth football, British Journal of Sports Medicine, 38, pp. 466-471, (2004); Quatman C.E., Ford K.R., Myer G.D., Hewett T.E., Maturation leads to gender differences in landing force and vertical jump performance: A longitudinal study, The American Journal of Sports Medicine, 34, pp. 806-813, (2006); Read P.J., Oliver J.L., Croix M.D., Myer G.D., Lloyd R.S., Consistency of field-based measures of neuromuscular control using force-plate diagnostics in elite male youth soccer players, The Journal of Strength & Conditioning Research, 30, pp. 3304-3311, (2016); Read P.J., Oliver J.L., De Ste Croix M.B.A., Myer G.D., Lloyd R.S., The scientific foundations and associated injury risks of early soccer specialization, Journal of Sports Sciences, 34, (2016); Read P.J., Oliver J.L., de Ste Croix M.B.A., Myer G.D., Lloyd R.S., Reliability of the tuck jump injury risk screening assessment in elite male youth soccer players, The Journal of Strength & Conditioning Research, 30, pp. 1510-1516, (2016); Read P.J., Oliver J.L., Croix M.D., Myer G.D., Lloyd R.S., The effects of chronological age and stage of maturation on landing kinematics in elite male soccer players, Journal of Athletic Training, 53, 4, (2018); Read P.J., Oliver J.L., de Ste Croix M.B.A., Myer G.D., Lloyd R.S., An audit of injuries in six English professional soccer academies, Journal of Sports Sciences, 36, 13, pp. 1542-1548, (2018); Schmitz R.J., Shultz S.J., Nguyen A.D., Dynamic valgus alignment and functional strength in males and females during maturation, Journal of Athletic Training, 44, pp. 26-32, (2009); (2012); van der Sluis A., Elferink-Gemser M.T., Coelho-e-Silva M.J., Nijboer J.A., Brink M.S., Visscher C., Sport injuries aligned to peak height velocity in talented pubertal soccer players, Int J Sports Med, 35, pp. 351-355, (2014); Swartz E.E., Decoster L.C., Russell P.J., Croce R.V., Effects of developmental stage and sex on lower extremity kinematics and vertical ground reaction forces during landing, Journal of Athletic Training, 40, (2005); Tropp H., Odenrick P., Postural control in single-limb stance, Journal of Orthopaedic Research, 6, pp. 833-839, (1988); Yeow C.H., Lee P.V.S., Goh J.C.H., Sagittal knee joint kinematics and energetics in response to different landing heights and techniques, The Knee, 17, pp. 127-131, (2010); Yu B., Garrett W.E., Mechanisms of non-contact ACL injuries, British Journal of Sports Medicine, 41, pp. 47-51, (2007); Zazulak B.T., Hewett T.E., Reeves N.P., Goldberg B., Cholewicki J., Deficits in neuromuscular control of the trunk predict knee injury risk: A prospective biomechanical-epidemiologic study, The American Journal of Sports Medicine, 35, pp. 1123-1130, (2007)","P.J. Read; Youth Physical Development Unit, School of Sport, Cardiff Metropolitan University, Cardiff, United Kingdom; email: Paul.Read@aspetar.com","","Churchill Livingstone","1466853X","","PTSHB","30014967","English","Phys. Ther. Sport","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85053184842" "Lees A.; Barton G.; Robinson M.","Lees, Adrian (7202900498); Barton, Gabor (12769114300); Robinson, Mark (24299659200)","7202900498; 12769114300; 24299659200","The influence of cardan rotation sequence on angular orientation data for the lower limb in the soccer kick","2010","Journal of Sports Sciences","28","4","","445","450","5","34","10.1080/02640410903540352","https://www.scopus.com/inward/record.uri?eid=2-s2.0-77953312378&doi=10.1080%2f02640410903540352&partnerID=40&md5=fe10e1dbc6140fe1477aa695ebf2e233","Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom","Lees A., Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom; Barton G., Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom; Robinson M., Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom","The influence of the Cardan rotation sequence on the orientation angles for joints is well known but has not been explored for dynamic sports movements. The purpose of this study is to establish the influence of Cardan rotation sequence on the orientation angles of the ankle, knee, and hip of the support leg and pelvis during dynamic sports movements, typified by a maximal instep kick in soccer. We found that: (a) the X (flexion/extension) axis rotations provide data that are robust for any sequence used other than the YXZ sequence, although the Y (abduction/adduction) and Z (internal/external) axes rotations are variable in both shape and offset magnitude; (b) the preferred rotation sequence is either XYZ or XZY for dynamic sports movements, although for the soccer kick the XYZ rotation sequence has been widely used and so this is recommended as a standard; and (c) most uncertainties exist in the Y and Z axes and are most apparent at the beginning of the movement. Where uncertainty exists in identifying Y and Z axes orientations, the integrated angular velocity may be considered as an alternative to determine the relative changes in segment orientation. © 2010 Taylor & Francis Group, LLC.","Cardan rotation sequence; Kick; Kinematics; Soccer","Adult; Biomechanics; Humans; Joints; Lower Extremity; Movement; Rotation; Soccer; Young Adult; adult; article; biomechanics; clinical trial; human; joint; leg; movement (physiology); physiology; rotation; sport","Baker R., Pelvic angles: A mathematically rigorous definition which is consistent with a conventional clinical understanding of the terms, Gait and Posture, 13, pp. 1-6, (2001); Cappozzo A., Croce U.D., Leardini A., Chiari L., Human movement analysis using stereophotogrammetry. Part 1: Theoretical background, Gait and Posture, 21, pp. 186-196, (2005); Karduna A.R., McClure P.W., Michener L.A., Scapular kinematics: Effects of altering the Euler angle sequence of rotations, Journal of Biomechanics, 33, pp. 1063-1068, (2000); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Medicine and Science in Sports and Exercise, 36, pp. 1017-1028, (2004); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, pp. 917-927, (1998); Nunome H., Asai T., Ikegami Y., Sakurai S., Three dimensional kinetic analysis of side-foot and instep kicks, Medicine and Science in Sports and Exercise, 34, pp. 2028-2036, (2002); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kick with the preferred and non-preferred leg, Journal of Sports Sciences, 24, pp. 529-541, (2006); Robertson D.G.E., Caldwell G., Hamill J., Kamen G., Whittlesey S.N., Research methods in biomechanics, (2004); Schache A.G., Wrigley T.V., Blanch P.D., Starr R., Rath D.A., Bennell K.L., The effect of differing Cardan angle sequences on three dimensional lumbo-pelvic angular kinematics during running, Medical Engineering and Physics, 23, pp. 493-501, (2001); Senk M., Cheze L., Rotation sequence as an important factor in shoulder kinematics, Clinical Biomechanics, 21, pp. S3-S8, (2006); Wu G., Cavanagh P.R., ISB recommendations for standardisation in the reporting of kinematic data, Journal of Biomechanics, 28, pp. 1257-1261, (1995); Wu G., Van der Helm F.C.T., Veeger H.E.J., Makhsous M., Van Roy P., Anglin C., ISB recommendation on definitions of joint coordinate systems of various joints for the reporting of human motion–Part II: Shoulder, elbow, wrist and hand, Journal of Biomechanics, 38, pp. 981-992, (2005); Zatsiorsky V.M., Kinematics of human movement, (1998)","A. Lees; Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, L3 2ET, Henry Cotton Campus, Webster Street, United Kingdom; email: a.lees@ljmu.ac.uk","","","02640414","","","20155569","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-77953312378" "Myer G.D.; Ford K.R.; Brent J.L.; Divine J.G.; Hewett T.E.","Myer, Gregory D. (6701852696); Ford, Kevin R. (7102539333); Brent, Jensen L. (14017733900); Divine, Jon G. (6701653237); Hewett, Timothy E. (7005201943)","6701852696; 7102539333; 14017733900; 6701653237; 7005201943","Predictors of sprint start speed: The effects of resistive ground-based vs. inclined treadmill training","2007","Journal of Strength and Conditioning Research","21","3","","831","836","5","27","10.1519/R-20886.1","https://www.scopus.com/inward/record.uri?eid=2-s2.0-34548611873&doi=10.1519%2fR-20886.1&partnerID=40&md5=bb2b162521628f891ef82976a56cc550","Cincinnati Children's Hospital, Medical Center Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH 45229; Graduate Program in Athletic Training, Rocky Mountain University of Health Professions, Provo, UT 84601; University of Kentucky, Department of Kinesiology and Health Promotion, Lexington, KY 40506; University of Cincinnati, College of Medicine, Departments of Pediatrics, Orthopaedic Surgery, and Biomedical Engineering, Cincinnati, OH 45221","Myer G.D., Cincinnati Children's Hospital, Medical Center Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH 45229, Graduate Program in Athletic Training, Rocky Mountain University of Health Professions, Provo, UT 84601; Ford K.R., Cincinnati Children's Hospital, Medical Center Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH 45229, University of Kentucky, Department of Kinesiology and Health Promotion, Lexington, KY 40506; Brent J.L., Cincinnati Children's Hospital, Medical Center Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH 45229; Divine J.G., Cincinnati Children's Hospital, Medical Center Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH 45229; Hewett T.E., Cincinnati Children's Hospital, Medical Center Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH 45229, University of Cincinnati, College of Medicine, Departments of Pediatrics, Orthopaedic Surgery, and Biomedical Engineering, Cincinnati, OH 45221","Myer, G.D., K.R. Ford, J.L. Brent, J.G. Divine, and T.E. Hewett. Predictors of sprint start speed: The effects of resistive ground-based vs. inclined treadmill training. J. Strength Cond. Res. 21(3):831-836. 2007.-There is currently no consensus with regard to the most effective method to train for improved acceleration, or with regard to which kinematic variable provides the greatest opportunity for improvement in this important performance characteristic. The purpose of this study was to determine the effects of resistive ground-based speed training and incline treadmill speed training on speed-related kinematic measures and sprint start speed. The hypothesis tested was that incline treadmill training would improve sprint start time, while the ground-based resistive training would not. Corollary hypotheses were that treadmill training would increase stride frequency and ground-based training would not affect kinematics during the sprint start. Thirty-one high school female soccer players (15.7 ±0.5 years) were assigned to either treadmill (n = 17) or ground-based (n = 14) training groups and trained 2 times a week for 6 weeks. The treadmill group utilized incline speed training on a treadmill, while the ground-based group utilized partner band resistance ground-based techniques. Three-dimensional motion analysis was used (4.5 m mark) before and after training to quantify kinematics during the fastest of 3 recorded sprint starts (9.1 m). Both groups decreased average sprint start time from 1.75 ±0.12 to 1.68 ±0.08 seconds (p < 0.001). Training increased stride frequency (p = 0.030) but not stride length. After training, total vertical pelvic displacement and stride length predicted 62% of the variance in sprint start time for the resistive ground-based group, while stride length and stride frequency accounted for 67% prediction of the variance in sprint start time for the treadmill group. The results of this study indicate that both incline treadmill and resistive ground-based training are effective at improving sprint start speed, although they potentially do so through differing mechanisms. © 2007 National Strength & Conditioning Association.","Acceleration; Performance training; Sprint training; Sprinting kinematics; Stride frequency; Stride length","Acceleration; Adolescent; Analysis of Variance; Biomechanics; Female; Humans; Linear Models; Muscle, Skeletal; Physical Education and Training; Running; Soccer; acceleration; adolescent; analysis of variance; article; biomechanics; clinical trial; controlled clinical trial; controlled study; female; human; methodology; physical education; physiology; randomized controlled trial; running; skeletal muscle; sport; statistical model","COMETTI G., MAFFIULETTI N.A., POUSSON M., CHATARD J.C., MAFFULLI N., Isokinetic strength and anaerobic power of elite, subelite and amateur French soccer players, Int. J. Sports Med, 22, pp. 45-51, (2001); CORN R.J., KNUDSON D., Effect of elastic-cord towing on the kinematics of the acceleration phase of sprinting, J. Strength Cond. Res, 17, pp. 72-75, (2003); DEANE R.S., CHOW J.W., TILLMAN M.D., FOURNIER K.A., Effects of hip flexor training on sprint, shuttle run, and vertical jump performance, J. Strength Cond. Res, 19, pp. 615-621, (2005); DELECLUSE C., VAN COPPENOLLE H., WILLEMS E., VAN LEEMPUTTE M., DIELS R., GORIS M., Influence of high-resistance and high-velocity training on sprint performance, Med. Sci. Sports Exerc, 27, pp. 1203-1209, (1995); ELLIOTT B.C., BLANKSBY B.A., A cinematographic analysis of overground and treadmill running by males and females, Med. Sci. Sports, 8, pp. 84-87, (1976); FRAPPIER J., Treadmill running to improve speed, Strength Cond. J, 24, pp. 27-29, (2002); FRISHBERG B.A., An analysis of overground and treadmill sprinting, Med. Sci. Sports Exerc, 15, pp. 478-485, (1983); FRY A.K., KRAEMER W.J., Physical performance characteristics of American collegiate football players, J. Appl. Sport Sci. Res, 5, pp. 126-138, (1991); HARRIS G.R., STONE M.H., O'BRYANT H.S., PROULX C.M., JOHNSON R.L., Short-term performance effects of high power, high force, or combined weight training methods, J. Strength Cond. Res, 14, pp. 14-20, (2000); KORCHEMNY R., Speed development: Training with the objective to improve stride length, Nat. Strength Cond. Assoc. J, 10, pp. 21-25, (1988); KOTZAMANIDIS C., CHATZOPOULOS D., MICHAILIDIS C., PAPAIAKOVOU G., PATTKAS D., The effect of a combined high-intensity strength and speed training program on the running and jumping ability of soccer players, J. Strength Cond. Res, 19, pp. 369-375, (2005); LOCKIE R.G., MURPHY A.J., SPINKS C.D., Effects of resisted sled towing on sprint kinematics in field-sport athletes, J. Strength Cond. Res, 17, pp. 760-767, (2003); MCBRIDE J.M., TRIPLETT-MCBRIDE T., DAVIE A., NEWTON R.U., The effect of heavy- vs. light-load jump squats on the development of strength, power, and speed, J. Strength Cond. Res, 16, pp. 75-82, (2002); NELSON R.C., DILLMAN C.J., LAGASSE P., BICKETT P., Biomechanics of overground versus treadmill running, Med. Sci. Sports, 4, pp. 238-240, (1972); SWANSON S.C., CALDWELL G.E., An integrated biomechanical analysis of high speed incline and level treadmill running, Med. Sci. Sports Exerc, 32, pp. 1146-1155, (2000); THELEN D.G., CHUMANOV E.S., HOERTH D.M., BEST T.M., SWANSON S.C., LI L., YOUNG M., HEIDERSCHEIT B.C., Hamstring muscle kinematics during treadmill sprinting, Med. Sci. Sports Exerc, 37, pp. 108-114, (2005); WALKER J.A.J., FRAPPIER, JOHNSON S.C., SWANSON S.C., Effect of a 6-week incline treadmill training program on Wingate test results and 40-yard sprint times, Med. Sci. Sports Exerc, 32, (2000); WANK V., FRICK U., SCHMIDTBLEICHER D., Kinematics and electromyography of lower limb muscles in overground and treadmill running, Int. J. Sports Med, 19, pp. 455-461, (1998); WENZEL R., PERFETTO E.M., The effect of speed versus non-speed training in power development, J. Appl. Sport Sci. Res, 6, pp. 82-87, (1992); WINTER D.A., Biomechanics and Motor Control of Human Movement, (1990); ZAFEIRIDIS A., SARASLANIDIS P., MANOU V., IOAKIMIDIS P., DIPLA K., KELLIS S., The effects of resisted sled-pulling sprint training on acceleration and maximum speed performance, J. Sports Med. Phys. Fitness, 45, pp. 284-290, (2005)","G.D. Myer; Cincinnati Children's Hospital, Medical Center Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati, OH 45229; email: greg.myer@chmcc.org","","","10648011","","","17685716","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-34548611873" "Shan G.; Zhang X.","Shan, Gongbing (7005942347); Zhang, Xiang (54381067000)","7005942347; 54381067000","From 2D leg kinematics to 3D full-body biomechanics-the past, present and future of scientific analysis of maximal instep kick in soccer","2011","Sports Medicine, Arthroscopy, Rehabilitation, Therapy and Technology","3","1","23","","","","26","10.1186/1758-2555-3-23","https://www.scopus.com/inward/record.uri?eid=2-s2.0-80555144093&doi=10.1186%2f1758-2555-3-23&partnerID=40&md5=fc09767e214a95c52901cf4b1c40a909","Department of Kinesiology, University of Lethbridge, Canada; Department of Physical Education, Xinzhou Teachers University, China","Shan G., Department of Kinesiology, University of Lethbridge, Canada; Zhang X., Department of Kinesiology, University of Lethbridge, Canada, Department of Physical Education, Xinzhou Teachers University, China","Biomechanics investigation on soccer kicking has a relatively long history, yet the body of knowledge is still small. This paper reviews articles published from 1960s to 2011, summarizing relevant findings, research trends and method development. It also discusses challenges faced by the field. The main aim of the paper is to promote soccer kicking studies through discussions on problem solving in the past, method development in the present, and possible research directions for the future. © 2011 Shan and Zhang; licensee BioMed Central Ltd.","","article; biomechanics; controlled study; electromyogram; information retrieval; instep kick; kinematics; leg movement; methodology; motion analysis system; muscle contraction; physical activity; publication; research; simulation; skill; sport; theoretical model; training","Hyballa P., The art of flying, Success in Soccer, 5, pp. 19-26, (2002); Reilly T., Williams M., Science and soccer, (2003); International Soccer-Introduction; Shan G., Daniels D., Wang C., Wutzke C., Lemire G., Biomechanical analysis of maximal instep kick by female soccer players, J Human Mov Stud, 49, pp. 149-168, (2005); Shan G., Influences of Gender and Experience on the Maximal Instep Soccer Kick, Euro J Sport Sci, 9, 2, pp. 107-114, (2009); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomech, 4, 1, pp. 59-72, (2005); David K., Lees A., Burwitz L., Understanding and measuring coordination and control in kicking skills in soccer: Implications for talent identification and skill acquisition, J Sports Sci, 18, pp. 703-714, (2000); Lees A., Nolan L., The biomechanics of soccer: A review, J Sports Sci, 16, pp. 211-234, (1998); Roberts E., Metcalfe A., Mechanical Analysis of Kicking, Biomechanics I Basel, Karger, pp. 315-319, (1967); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Kollath E., Analyse des Innenspannstoßes aus biomechanischer Sicht, Fußballtraining, 2, 5, pp. 15-20, (1983); Luhtanen P., Biomechanical aspects, Football (Soccer), pp. 59-77, (1994); Opavsky P., An investigation of linear and angular kinematics of the leg during two types of soccer kick, Science and Football, pp. 460-467, (1988); Plagenhoef S., Patterns of Human Motion, (1971); Zernicke R., Roberts E.M., Lower extremity forces and torques during systematic variation of non-weight bearing motion, Med Sci Sports, 10, pp. 21-26, (1978); Lees A., (2003) Biomechanics applied to soccer skills, Science and Soccer, pp. 123-134, (2003); Bull-Andersen T., Dorge H.C., Thomsen F.I., Collisions in soccer kicking, Sports Engin, 2, pp. 121-126, (1999); Willimczik K., Biomechanik der Sportarten, (1989); Stoner L., Ben-Sira D., Variation in movement patterns of professional soccer players when executing a long range in-step soccer kick, Biomechanics VII-B, pp. 337-342, (1981); Taube F.W., Electromyographic analysis of selected muscles performing the soccer instep kick following levels of physiological stress, Microfilm (neg.) of typescript. Thesis (Ph.D.)-University of Utah, 1972. Bibliography: l, pp. 68-71; Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Aagaard H., Dyhre-Poulsen P., Klausen K., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scand J Med & Sci Sports, 9, 4, pp. 195-200, (1999); Zhang Y.Q., Guo J.R., Chen L.G., Discussion on skill of push kicking with full instep by simultaneity of myodynamic, myographic and video measurements in soccer players, J Tianjin Insti PE, 14, 2, pp. 50-53, (1999); Brophy R., Backus S., Pansy B., Lyman S., Williams R., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, J orthop sports physic thera, 37, 5, pp. 260-268, (2007); Scurr J., Abbott V., Ball N., Quadriceps EMG muscle activation during accurate soccer instep kicking, J Sports Sci, 29, 3, pp. 247-251, (2011); Rodano R., Tavana R., Three dimensional analysis of the instep kick in professional soccer players, Science and Football II, pp. 357-361, (1993); Glenmark B., Nisson M., Gao H., Gustafsson J.A., Dahlman-Wright K., Westerblad H., Difference in skeletal muscle function in males vs. females: role of estrogen receptor-beta, Am j physiol-Endocrin metab, 287, 6, (2004)","G. Shan; Department of Kinesiology, University of Lethbridge, Canada; email: g.shan@uleth.ca","","","17582555","","","","English","Sports Med. Arthroscopy Rehabil. Ther. Technol.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-80555144093" "Read P.J.; Oliver J.L.; De Ste Croix M.B.A.; Myer G.D.; Lloyd R.S.","Read, Paul J. (55764420600); Oliver, Jon L. (7401628051); De Ste Croix, Mark B. A. (6603255583); Myer, Gregory D. (6701852696); Lloyd, Rhodri S. (24460583700)","55764420600; 7401628051; 6603255583; 6701852696; 24460583700","Landing kinematics in elite male youth soccer players of different chronologic ages and stages of maturation","2018","Journal of Athletic Training","53","4","","372","378","6","34","10.4085/1062-6050-493-16","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85047953439&doi=10.4085%2f1062-6050-493-16&partnerID=40&md5=8fb0f1ac1d493dcfe95d488b31262784","Youth Physical Development Centre, School of Sport and Health Sciences, Cardiff Metropolitan University, United Kingdom; Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand; School of Sport and Exercise, University of Gloucestershire, United Kingdom; SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Ohio, United States; Departments of Pediatrics and Orthopaedic Surgery, University of Cincinnati, OH, United States; Micheli Center for Sports Injury Prevention, Waltham, MA, United States; Centre for Sport Science and Human Performance, Waikato Institute of Technology, New Zealand, New Zealand; Aspetar Orthopaedic and Sports Medicine Hospital, Sports City Street, Doha, 29222, Qatar","Read P.J., Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand, Aspetar Orthopaedic and Sports Medicine Hospital, Sports City Street, Doha, 29222, Qatar; Oliver J.L., Youth Physical Development Centre, School of Sport and Health Sciences, Cardiff Metropolitan University, United Kingdom, Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand; De Ste Croix M.B.A., School of Sport and Exercise, University of Gloucestershire, United Kingdom; Myer G.D., SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Ohio, United States, Departments of Pediatrics and Orthopaedic Surgery, University of Cincinnati, OH, United States, Micheli Center for Sports Injury Prevention, Waltham, MA, United States; Lloyd R.S., Youth Physical Development Centre, School of Sport and Health Sciences, Cardiff Metropolitan University, United Kingdom, Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand, Centre for Sport Science and Human Performance, Waikato Institute of Technology, New Zealand, New Zealand","Context: Despite the high frequency of knee injuries in athletes, few researchers have studied the effects of chronologic age and stage of maturation on knee-joint kinematics in male youth soccer players. Objective: To use a coach-friendly screening tool to examine knee-valgus scores for players of different ages and at different stages of maturation. Design: Cross-sectional study. Setting: Academy soccer clubs. Patients or Other Participants: A total of 400 elite male youth soccer players aged 10 to 18 years categorized by chronologic age and stage of maturation based on their years from peak height velocity (PHV). Main Outcome Measure(s): Knee valgus was evaluated during the tuck-jump assessment via 2-dimensional analysis. Frontal-plane projection angles were subjectively classified as minor (,108), moderate (108-208), or severe (.208), and using these classifications, we scored knee valgus in the tuck jump as 0 (no valgus), 1 (minor), 2 (moderate), or 3 (severe). Results: A trend toward higher valgus scores was observed in the younger age groups and the pre-PHV group. The lowest frequency of no valgus occurred in the U18 and post-PHV groups. The highest percentages of severe scores were in the U13 and pre-PHV groups for the right limb. Knee-valgus scores were lower for both lower extremities in the U18 group than in all other age groups (P, .001) except the U16 group. Scores were lower for the post-PHV than the pre-PHV group for the right limb (P, .001) and both pre-PHV and circa-PHV groups for the left limb (P, .001). Noteworthy interlimb asymmetries were evident in the U14, U15, and circa-PHV groups. Conclusions: Reductions in knee valgus with incremental age and during the later stages of maturation indicated that this risk factor was more prevalent in younger players. Interlimb asymmetry may also emerge around the time of the peak growth spurt and early adolescence, potentially increasing the risk of traumatic injury. © 2018 National Athletic Trainers' Association Inc. All rights reserved.","Asymmetry; Injury risk; Knee valgus","Adolescent; Adolescent Development; Aging; Athletic Injuries; Biomechanical Phenomena; Child; Child Development; Cross-Sectional Studies; Female; Humans; Knee Injuries; Knee Joint; Male; Prospective Studies; Risk Factors; Soccer; adolescent; adolescent development; aging; biomechanics; child; child development; cross-sectional study; female; growth, development and aging; human; injuries; knee; knee injury; male; pathophysiology; physiology; prospective study; risk factor; soccer; sport injury","Price R.J., Hawkins R.D., Hulse M.A., Hodson A., The Football Association and medical research programme: An audit of injuries in academy youth football, Br J Sports Med, 38, 4, pp. 466-471, (2004); Schmikli S.L., De Vries W.R., Inklaar H., Backx F.J., Injury prevention target groups in soccer: Injury characteristics and incidence rates in Male junior and senior soccer players, J Sci Med Sport, 14, 3, pp. 199-203, (2011); Mirwald R.L., Baxter-Jones A.D., Bailey D.A., Beunen G.P., An assessment of maturity from anthropometric measurements, Med Sci Sports Exerc, 34, 4, pp. 689-694, (2002); Van Der Sluis A., Elferink-Gemser M.T., Coelho-E-Sliva M.J., Nijboer J.A., Brink M.S., Visscher C., Sports injuries aligned to peak height velocity in talented pubertal soccer players, Int J Sports Med, 35, 4, pp. 351-355, (2014); Atkins S.J., Bentley I., Hurst H.T., Sinclair J.K., Hesketh C., The presence of bilateral imbalance of the lower limbs in elite youth soccer players of different ages, J Strength Cond Res, 30, 4, pp. 1007-1013, (2016); Philippaerts R.M., Vaeyens R., Janssens M., Et al., The relationship between peak height velocity and physical performance in youth soccer players, J Sports Sci, 24, 3, pp. 221-230, (2006); Le Gall F., Carling C., Reilly T., Vandewalle H., Church J., Rochcongar P., Incidence of injuries in elite French youth soccer players: A 10-season study, Am J Sports Med, 34, 6, pp. 928-938, (2006); Moore O., Cloke D.J., Avery P.J., Beasley I., Deehan D.J., English Premiership Academy knee injuries: Lessons from a 5 year study, J Sports Sci, 29, 14, pp. 1535-1544, (2011); Volpi P., Pozzoni R., Galli M., The major traumas in youth football, Knee Surg Sports Traumatol Arthrosc, 11, 6, pp. 399-402, (2003); Walden M., Krosshaug T., Bjrneboe J., Andersen T.E., Faul O., Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in Male professional football players: A systematic video analysis of 39 cases, Br J Sports Med, 49, 22, pp. 1452-1460, (2015); Wijdicks C.A., Griffith C.J., LaPrade R.F., Et al., Medial knee injury: Part 2, load sharing between the posterior oblique ligament and superficial medial collateral ligament, Am J Sports Med, 37, 9, pp. 1771-1776, (2009); Read P.J., Oliver J.L., De Ste Croix M.B., Myer G.D., Lloyd R.S., Neuromuscular risk factors for knee and ankle ligament injuries in Male youth soccer players, Sports Med, 46, 8, pp. 1059-1066, (2016); Myer G.D., Paterno M.V., Ford K.R., Quatman C.E., Hewett T.E., Rehabilitation after anterior cruciate ligament reconstruction: Criteria-based progression through the return-to-sport phase, J Orthop Sports Phys Ther, 36, 6, pp. 385-402, (2006); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Development and validation of a clinic-based prediction tool to identify female athletes at high risk of anterior cruciate ligament injury, Am J Sports Med, 38, 10, pp. 2025-2033, (2010); Myer G.D., Brent J.L., Ford K.R., Hewett T.E., Real-time assessment and neuromuscular training feedback techniques to prevent ACL injury in female athletes, Strength Cond J, 33, 3, pp. 21-35, (2011); Padua D.A., DiStefano L.J., Beutler A.I., De La Motte S.J., DiStefano M.J., Marshall S.W., The Landing Error Scoring System as a screening tool for an anterior cruciate ligament injury-prevention program in elite-youth soccer athletes, J Athl Train, 50, 6, pp. 589-595, (2015); Read P.J., Oliver J.L., De Ste Croix M.B., Myer G.D., Lloyd R.S., Reliability of the tuck jump injury risk screening assessment in elite Male youth soccer players, J Strength Cond Res, 30, 6, pp. 1510-1516, (2016); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Noyes F.R., Barber-Westin S.D., Fleckenstein C., Walsh C., West J., The drop-jump screening test: Difference in lower limb control by gender and effect of neuromuscular training in female athletes, Am J Sports Med, 33, 2, pp. 197-207, (2005); Schmitz R.J., Schultz S.J., Nguyen A.D., Dynamic valgus alignment and functional strength in males and females during maturation, J Athl Train, 44, 1, pp. 26-32, (2009); Yu B., McClure S.B., Onate J.A., Guskiewicz K.M., Kirkendall D.T., Garrett W.E., Age and gender effects on lower extremity kinematics of youth soccer players in a stop-jump task, Am J Sports Med, 33, 9, pp. 1356-1364, (2005); Herrington L., Munro A., Drop jump landing knee valgus angle: Normative data in a physically active population, Phys Ther Sport, 11, 2, pp. 56-59, (2010); Myer G.D., Stroube B.W., DiCesare C.A., Et al., Augmented feedback supports skill transfer and reduces high-risk injury landing mechanics: A double-blind, randomized controlled laboratory study, Am J Sports Med, 41, 3, pp. 669-677, (2013); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and Male basketball players, Med Sci Sports Exerc, 35, 10, pp. 1745-1750, (2003); Indelicato P.A., Isolated medial collateral ligament injuries in the knee, J Am Acad Orthop Surg, 3, 1, pp. 9-14, (1995); Stroube B.W., Myer G.D., Brent J.L., Ford K.R., Jr H.R.S., Hewett T.E., Effects of task-specific augmented feedback on deficit modification during performance of the tuck-jump exercise, J Sport Rehabil, 22, 1, pp. 7-18, (2013); Quatman C.E., Ford K.R., Myer G.D., Hewett T.E., Maturation leads to gender differences in landing force and vertical jump performance: A longitudinal study, Am J Sports Med, 34, 5, pp. 806-813, (2006); Swartz E.E., Decoster L.C., Russell P.J., Croce R.V., Effects of developmental stage and sex on lower extremity kinematics and vertical ground reaction forces during landing, J Athl Train, 40, 1, pp. 9-14, (2005); Jones M.A., Hitchen P.J., Stratton G., The importance of considering biological maturity when assessing physical fitness measures in girls and boys aged 10 to 16 years, Ann Hum Biol, 27, 1, pp. 57-65, (2000); Gerodimos V., Zafeiridis A., Perkos S., Dipla K., Manou V., Kellis S., The contribution of stretch-shortening cycle and arm-swing to vertical jumping performance in children, adolescents, and adult basketball players, Pediatr Exerc Sci, 20, 4, pp. 379-389, (2008); Daneshjoo A., Rahnama N., Mokhtar A.H., Yusof A., Bilateral and unilateral asymmetries of isokinetic strength and flexibility in Male young professional soccer players, J Hum Kinet, 36, pp. 45-53, (2013); Brophy R., Silvers H.J., Gonzales T., Mandelbaum B.R., Gender influences: The role of leg dominance in ACL injury among soccer players, Br J Sports Med, 44, 10, pp. 694-697, (2010); Van Der Sluis A., Elferink-Gemser M.T., Brink M.S., Visscher C., Importance of peak height velocity timing in terms of injuries in talented soccer players, Int J Sports Med, 36, 4, pp. 327-332, (2015); Myer G.D., Ford K.R., Palumbo J.P., Hewett T.E., Neuromuscular training improves performance and lower-extremity biomechanics in female athletes, J Strength Cond Res, 19, 1, pp. 51-60, (2005); Myer G.D., Faigenbaum A.D., Ford K.R., Best T.M., Bergeron M.F., Hewett T.E., When to initiate integrative neuromuscular training to reduce sports-related injuries and enhance health in youth?, Curr Sports Med Rep, 10, 3, pp. 155-166, (2011); Faigenbaum A.D., Farrell A., Fabiano M., Et al., Effects of integrative neuromuscular training on fitness performance in children, Pediatr Exerc Sci, 23, 4, pp. 573-584, (2011)","P.J. Read; Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand; email: paul.read@aspetar.com","","National Athletic Trainers' Association Inc.","10626050","","JATTE","29693423","English","J. Athl. Train.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85047953439" "Smith N.; Dyson R.; Hale T.; Janaway L.","Smith, N. (26427089000); Dyson, R. (57206350447); Hale, T. (7101682675); Janaway, L. (6507099325)","26427089000; 57206350447; 7101682675; 6507099325","Contributions of the inside and outside leg to maintenance of curvilinear motion on a natural turf surface","2006","Gait and Posture","24","4","","453","458","5","30","10.1016/j.gaitpost.2005.11.007","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33750364398&doi=10.1016%2fj.gaitpost.2005.11.007&partnerID=40&md5=c4165ff47c85f7867f59d40cc71391be","University of Chichester, Chichester, West Sussex PO19 6PE, College Lane, United Kingdom; Brunel Institute for Bioengineering, Brunel University, United Kingdom","Smith N., University of Chichester, Chichester, West Sussex PO19 6PE, College Lane, United Kingdom; Dyson R., University of Chichester, Chichester, West Sussex PO19 6PE, College Lane, United Kingdom; Hale T., University of Chichester, Chichester, West Sussex PO19 6PE, College Lane, United Kingdom; Janaway L., Brunel Institute for Bioengineering, Brunel University, United Kingdom","Little is understood of the mechanisms of locomotion if human subjects are not moving in a straight path. The identification of contributory variables to curved motion would also underpin other non-linear actions such as cutting and turning. The performance of such tasks has relevance to both success in sports and exercise, and accident avoidance in an occupational setting. Comparison of ground reaction force values in successive footstrikes would allow an understanding of the contribution of each limb's movement to motion in a curved path. For ecological validity to field games, two natural-turf covered force platforms were located outdoors in a field. Six males (age 25 ± 4.73 years; mass 79.7 ± 7.17 kg) wearing standard six-stud soccer boots performed straight and curved trials (radius 5 m) at velocities of 4.5 and 5.5 m s-1. Ground reaction force measures were collected on successive footstrikes at 500 Hz, whilst kinematics of the lower extremity were measured at 50 Hz. Results for two successive footfalls showed greater average total force in straight motion (3.53 BW versus 3.08 BW), with the outside leg contributing most to the movement pattern in curvilinear motion. Ballistic airtime was reduced from straight to curvilinear motion, creating a greater proportional foot contact time during curved running. This, with lowered total force values, suggested a lower centre of gravity during curved motion to minimise drift towards the tangent of the curve. In curved motion, all vertical force measures were greater for the outside leg, with anterior-posterior forces showing the outside leg provided greater propulsion forces and impulse. Improvement in performance in curvilinear motion should therefore be focused at the outside limb. © 2006 Elsevier B.V. All rights reserved.","Curve; Force; Gait; Kinematics; Natural turf; Running; Soccer","Adult; Biomechanics; Foot; Gait; Gravitation; Humans; Leg; Male; Motion; Muscle, Skeletal; Running; adult; article; comparative study; controlled study; force; gait; gravity; human; human experiment; kinematics; leg; locomotion; male; measurement; normal human; priority journal; running; sport; task performance; validity; velocity","Bartlett R., Bowen T., Kine analysis software, (1993); Coakes S.J., Steed L.G., SPSS analaysis without anguish, (1999); Hamill J., Murphy M., Sussman D., The effects of track turns on lower extremity function, Int J Sport Biomech, 3, pp. 276-286, (1987); Saggini R., Calligaris A., Montanari G., Tjouroudis N., Vecchiet L., The foot-ground reaction in the soccer player, Science and Football II, pp. 341-344, (1992); Schot P., Dart J., Schuh M., Biomechanical analysis of two change of direction manoevers while running, J Orthop Sport Phys Ther, 22, 6, pp. 254-258, (1995); Smith N.A., Dyson R.J., Hale T., Lower extremity muscular adaptations to curvilinear motion in soccer, J Hum Movement Stud, 33, pp. 139-153, (1997); Smith N., Dyson R., Janaway L., Ground reaction force measures when running in soccer boots and soccer training shoes on a natural turf surface, Sport Eng, 7, pp. 159-167, (2004); Stoner L.J., Ben-Siri D., Sprinting on the curve, Science in Athletics, pp. 167-173, (1979)","N. Smith; University of Chichester, Chichester, West Sussex PO19 6PE, College Lane, United Kingdom; email: N.Smith@ucc.ac.uk","","","09666362","","GAPOF","16473010","English","Gait Posture","Article","Final","","Scopus","2-s2.0-33750364398" "Hanlon E.; Bir C.","Hanlon, Erin (36133343800); Bir, Cynthia (6602602658)","36133343800; 6602602658","Validation of a wireless head acceleration measurement system for use in soccer play","2010","Journal of Applied Biomechanics","26","4","","424","431","7","34","10.1123/jab.26.4.424","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79551570328&doi=10.1123%2fjab.26.4.424&partnerID=40&md5=20c0b98567154f3861644e48a23bb47e","Bioengineering Center, College of Engineering, Wayne State University, Detroit, MI, United States","Hanlon E., Bioengineering Center, College of Engineering, Wayne State University, Detroit, MI, United States; Bir C., Bioengineering Center, College of Engineering, Wayne State University, Detroit, MI, United States","Soccer heading has been studied previously with conflicting results. One major issue is the lack of knowledge regarding what actually occurs biomechanically during soccer heading impacts. The purpose of the current study is to validate a wireless head acceleration measurement system, head impact telemetry system (HITS) that can be used to collect head accelerations during soccer play. The HIT system was fitted to a Hybrid III (HIII) head form that was instrumented with a 3-2-2-2 accelerometer setup. Fifteen impact conditions were tested to simulate impacts commonly experienced during soccer play. Linear and angular acceleration were calculated for both systems and compared. Root mean square (RMS) error and cross correlations were also calculated and compared for both systems. Cross correlation values were very strong with r = .95 ± 0.02 for ball to head forehead impacts and r = .96 ± 0.02 for head to head forehead impacts. The systems showed a strong relationship when comparing RMS error, linear head acceleration, angular head acceleration, and the cross correlation values. © 2010 Human Kinetics, Inc.","Football; Heading; Youth","Acceleration measurement; Accelerometers; Sports; Angular acceleration; Cross-correlation value; Football; Head impact telemetries; Heading; Linear head acceleration; Root-mean-square errors; Youth; acceleration; accelerometer; article; athlete; biomechanics; controlled study; forehead; head; head injury; linear regression analysis; measurement; simulation; sport; sport injury; telemetry; validation study; Acceleration","Beckwith J.G., Chu J.J., Greenwald R.M., Validation of a noninvasive system for measuring head acceleration for use during boxing competition, Journal of Applied Biomechanics, 23, 3, pp. 238-244, (2007); Chu J.J., Beckwith J.G., Crisco J.J., Greenwald R.M., A novel algorithm to measure linear and rotational head acceleration using single-axis accelerometers, 5th World Congress of Biomechanics, Munich, Germany, (2006); Crisco J.J., Chu J.J., Greenwald R.M., An algorithm for estimating acceleration magnitude and impact location using multiple nonorthogonal single-axis accelerometers, Journal of Biomechanical Engineering, 126, 6, pp. 849-854, (2004); Duma S.M., Manoogian S.J., Bussone W.R., Brolinson P.G., Goforth M.W., Donnenwerth J.J., Greenwald R.M., Chu J.J., Crisco J.J., Analysis of real-time head accelerations in collegiate football players, Clinical Journal of Sport Medicine, 15, 1, pp. 3-8, (2005); Gadd C.W., Use of Weighted-Impulse Criterion for Estimating Injury Hazard, Tenth Stapp Car Crash Conference, (1966); Gurdjian E.S., Roberts V.L., Thomas L.M., Tolerance curves of acceleration and intracranial pressure and protective index in experimental head injury, The Journal of Trauma, 6, 5, pp. 600-604, (1966); Manoogian S., McNeely D., Duma S., Brolinson G., Greenwald R., Head acceleration is less than 10 percent of helmet acceleration in football impacts, Biomedical Sciences Instrumentation, 42, pp. 383-388, (2006); Naunheim R.S., Bayly P.V., Standeven J., Neubauer J.S., Lewis L.M., Genin G.M., Linear and angular head accelerations during heading of a soccer ball, Medicine and Science in Sports and Exercise, 35, 8, pp. 1406-1412, (2003); Naunheim R.S., Standeven J., Richter C., Lewis L.M., Comparison of impact data in hockey, and soccer, Journal of Trauma - Injury, Infection and Critical Care, 48, 5, pp. 938-941, (2000); Newman J.A., Shewchenko N., Welbourne E., A proposed new biomechanical head injury assessment function - The maximum power index, Stapp Car Crash Journal, 44, pp. 215-247, (2000); Padgaonkar A., Krieger K., King A., Measurement of angular acceleration of a rigid body using linear accelerometers, ASME J. Appl. Mech., 42, pp. 552-558, (1975); Shewchenko N., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football. Part 1: Development of biomechanical methods to investigate head response, British Journal of Sports Medicine, 39, SUPPL. 1, (2005); Shewchenko N., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football. Part 2: Biomechanics of ball heading and head response, British Journal of Sports Medicine, 39, SUPPL. 1, (2005); Shewchenko N., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football. Part 3: Effect of ball properties on head response, British Journal of Sports Medicine, 39, SUPPL. 1, (2005); Withnall C., Shewchenko N., Wonnacott M., Dvorak J., Effectiveness of headgear in football, Br J Sports Med, 39, SUPPL. 1, (2005); Zhang L., Yang K.H., King A.I., A Proposed Injury Threshold for Mild Traumatic Brain Injury, Journal of Biomechanical Engineering, 126, 2, pp. 226-236, (2004)","","","Human Kinetics Publishers Inc.","10658483","","JABOE","","English","J. Appl. Biomech.","Article","Final","","Scopus","2-s2.0-79551570328" "Von Porat A.; Henriksson M.; Holmström E.; Roos E.M.","Von Porat, Anette (16403635100); Henriksson, Marketta (9234849600); Holmström, Eva (27171742000); Roos, Ewa M. (35421223200)","16403635100; 9234849600; 27171742000; 35421223200","Knee kinematics and kinetics in former soccer players with a 16-year-old ACL injury - The effects of twelve weeks of knee-specific training","2007","BMC Musculoskeletal Disorders","8","","35","","","","29","10.1186/1471-2474-8-35","https://www.scopus.com/inward/record.uri?eid=2-s2.0-34249732717&doi=10.1186%2f1471-2474-8-35&partnerID=40&md5=14b26ace887638e50d68066039b87294","Department of Health Sciences, Division of Physiotherapy, Lund University, Lund, Sweden; Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden; Department of Orthopaedics, Clinical Sciences Lund, Lund University, Sweden","Von Porat A., Department of Health Sciences, Division of Physiotherapy, Lund University, Lund, Sweden; Henriksson M., Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden; Holmström E., Department of Health Sciences, Division of Physiotherapy, Lund University, Lund, Sweden; Roos E.M., Department of Orthopaedics, Clinical Sciences Lund, Lund University, Sweden","Background. Training of neuromuscular control has become increasingly important and plays a major role in rehabilitation of subjects with an injury to the anterior cruciate ligament (ACL). Little is known, however, of the influence of this training on knee stiffness during loading. Increased knee stiffness occurs as a loading strategy of ACL-injured subjects and is associated with increased joint contact forces. Increased or altered joint loads contribute to the development of osteoarthritis. The aim of the study was to determine if knee stiffness, defined by changes in knee kinetics and kinematics of gait, step activity and cross-over hop could be reduced through a knee-specific 12-week training programme. Methods. A 3-dimensional motion analysis system (VICON) and a force plate (AMTI) were used to calculate knee kinetics and kinematics before and after 12 weeks of knee-specific training in 12 males recruited from a cohort with ACL injury 16 years earlier. Twelve uninjured males matched for age, sex, BMI and activity level served as a reference group. Self-reported patient-relevant data were obtained by the KOOS questionnaire. Results. There were no significant changes in knee stiffness during gait and step activity after training. For the cross-over hop, increased peak knee flexion during landing (from 44 to 48 degrees, p = 0.031) and increased internal knee extensor moment (1.28 to 1.55 Nm/kg, p = 0.017) were seen after training, indicating reduced knee stiffness. The KOOS sport and recreation score improved from 70 to 77 (p = 0.005) and was significantly correlated with the changes in knee flexion during landing for the cross-over hop (r = 0.6, p = 0.039). Conclusion. Knee-specific training improved lower extremity kinetics and kinematics, indicating reduced knee stiffness during demanding hop activity. Self-reported sport and recreational function correlated positively with the biomechanical changes supporting a clinical importance of the findings. Further studies are needed to confirm these results in women and in other ACL injured populations. © 2007 von Porat et al; licensee BioMed Central Ltd.","","Adult; Anterior Cruciate Ligament; Athletic Injuries; Biomechanics; Exercise Therapy; Humans; Knee Injuries; Locomotion; Male; Muscle, Skeletal; Patient Compliance; Soccer; Task Performance and Analysis; Treatment Outcome; adult; anterior cruciate ligament injury; article; athlete; biomechanics; body mass; clinical article; clinical trial; cohort analysis; controlled clinical trial; controlled study; force; gait; human; joint stiffness; kinematics; kinesiotherapy; knee injury and osteoarthritis outcome score; male; motion analysis system; muscle training; neuromuscular function; questionnaire; self report; anterior cruciate ligament; injury; knee injury; locomotion; methodology; pathophysiology; patient compliance; physiology; skeletal muscle; sport; sport injury; task performance; treatment outcome","Buss D.D., Min R., Skyhar M., Galinat B., Warren R.F., Wickiewicz T.L., Nonoperative treatment of acute anterior cruciate ligament injuries in a selected group of patients, Am J Sports Med, 23, 2, pp. 160-165, (1995); 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Von Porat; Department of Health Sciences, Division of Physiotherapy, Lund University, Lund, Sweden; email: anette.vonporat@telia.com","","","14712474","","","17439651","English","BMC Musculoskelet. Disord.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-34249732717" "Barber Foss K.D.; Ford K.R.; Myer G.D.; Hewett T.E.","Barber Foss, Kim D. (6507308390); Ford, Kevin R. (7102539333); Myer, Gregory D. (6701852696); Hewett, Timothy E. (7005201943)","6507308390; 7102539333; 6701852696; 7005201943","Generalized joint laxity associated with increased medial foot loading in female athletes","2009","Journal of Athletic Training","44","4","","356","362","6","26","10.4085/1062-6050-44.4.356","https://www.scopus.com/inward/record.uri?eid=2-s2.0-67650346208&doi=10.4085%2f1062-6050-44.4.356&partnerID=40&md5=3b90cc989cbad5608b54e5240ff9b1d2","Sports Medicine Biodynamics Center, Cincinnati Children's Hospital, MLC 10001, Cincinnati, OH 45229, 3333 Burnet Avenue, United States; Rocky Mountain University of Health Professions, Provo, UT, United States","Barber Foss K.D., Sports Medicine Biodynamics Center, Cincinnati Children's Hospital, MLC 10001, Cincinnati, OH 45229, 3333 Burnet Avenue, United States; Ford K.R., Sports Medicine Biodynamics Center, Cincinnati Children's Hospital, MLC 10001, Cincinnati, OH 45229, 3333 Burnet Avenue, United States; Myer G.D., Sports Medicine Biodynamics Center, Cincinnati Children's Hospital, MLC 10001, Cincinnati, OH 45229, 3333 Burnet Avenue, United States, Rocky Mountain University of Health Professions, Provo, UT, United States; Hewett T.E., Sports Medicine Biodynamics Center, Cincinnati Children's Hospital, MLC 10001, Cincinnati, OH 45229, 3333 Burnet Avenue, United States","Context: The relationship between generalized joint laxity and plantar pressure distribution of the foot and the potential implications for lower extremity injury have not been studied. Objective: To determine the relationship between generalized joint laxity and dynamic plantar pressure distribution. We hypothesized that individuals with greater generalized joint laxity, or hypermobility, would have greater dynamic medial midfoot pressure and loading during walking than nonhypermobile individuals. Design: Case control. Setting: Institutional biomechanics laboratory. Patients or Other Participants: Participants included 112 female soccer players between 11 and 21 years of age. Main Outcome Measure(s): Each participant was tested for generalized joint laxity using the Beighton and Horan Joint Mobility Index (BHJMI; range, 0-9) and was categorized as having either high (BHJMI score ≥4) or low (BHJMI score <4) generalized joint laxity. Peak pressure and maximum force were calculated from a dynamic, barefoot plantar pressure distribution system. Results: Peak pressure and maximum force were greater in the 27 participants categorized as having high generalized joint laxity than in the 85 participants categorized as having low generalized joint laxity. The midfoot region exhibited greater loading in participants with high generalized joint laxity than in the other participants. We found an effect of BHJMI classification in the medial midfoot; peak pressure in the dominant (F1,109 = 11.262, P 5 .001) and nondominant (F1,109 = 14.32, P < .001) sides and maximum force in the dominant (F1,109 5 7.88, P = .006) and nondominant (F 1,109 = 9.18, P = .003) sides were greater in the high generalized joint laxity group than in the low generalized joint laxity group. Conclusions: Athletes classified as having high generalized joint laxity demonstrated increased midfoot loading. Delineation of risk factors for medial collapse of the foot, which include hypermobility in athletes, may help clinicians evaluate and prevent lower extremity injury with treatments, such as orthoses. © by the National Athletic Trainers' Association, Inc.","Foot mechanics; Foot pressure; Hypermobility; Maximum force; Patellofemoral pain","Adolescent; Adult; Analysis of Variance; Arthrometry, Articular; Biomechanical Phenomena; Case-Control Studies; Child; Female; Foot Injuries; Humans; Joint Instability; Patellofemoral Pain Syndrome; Soccer; Weight-Bearing; Young Adult; adolescent; adult; article; athlete; biomechanics; child; female; foot; force; generalized joint laxity; human; human experiment; joint mobility; musculoskeletal system parameters; normal human; pressure; school child; weight bearing; analysis of variance; arthrometry; case control study; complication; Foot Injuries; joint instability; patellofemoral pain syndrome; soccer; young adult","Seckin U., Tur B.S., Yilmaz O., Yagci I., Bodur H., Arasil T., The prevalence of joint hypermobility among high school students, Rheumatology International, 25, 4, pp. 260-263, (2005); 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February 22, 2008; Indianapolis, IN; Ledoux W.R., Hillstrom H.J., The distributed plantar vertical force of neutrally aligned and pes planus feet, Gait and Posture, 15, 1, pp. 1-9, (2002); Thijs Y., De Clercq D., Roosen P., Witvrouw E., Gait-related intrinsic risk factors for patellofemoral pain in novice recreational runners, British Journal of Sports Medicine, 42, 6, pp. 466-471, (2008); Eils E., Streyl M., Linnenbecker S., Thorwesten L., Volker K., Rosenbaum D., Characteristic Plantar Pressure Distribution Patterns during Soccer-Specific Movements, American Journal of Sports Medicine, 32, 1, pp. 140-145, (2004); Pasque C.B., Hewett T.E., A prospective study of high school wrestling injuries, American Journal of Sports Medicine, 28, 4, pp. 509-515, (2000); Beckman S.M., Buchanan T.S., Ankle inversion injury and hypermobility: Effect on hip and ankle muscle electromyography onset latency, Arch Phys Med Rehabil, 76, 12, pp. 1138-1143, (1995); Biro F., Gewanter H.L., Baum J., The hypermobility syndrome, Pediatrics, 72, 5, pp. 701-706, (1983)","K. D. Barber Foss; Sports Medicine Biodynamics Center, Cincinnati Children's Hospital, MLC 10001, Cincinnati, OH 45229, 3333 Burnet Avenue, United States; email: kim.foss@chmcc.org","","National Athletic Trainers' Association Inc.","10626050","","JATTE","19593417","English","J. Athl. Train.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-67650346208" "Silbernagel K.G.; Willy R.; Davis I.","Silbernagel, Karin Gravare (8103125200); Willy, Richard (6506609255); Davis, Irene (7102963312)","8103125200; 6506609255; 7102963312","Preinjury and postinjury running analysis along with measurements of strength and tendon length in a patient with a surgically repaired achilles tendon rupture","2012","Journal of Orthopaedic and Sports Physical Therapy","42","6","","521","529","8","27","10.2519/jospt.2012.3913","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863618214&doi=10.2519%2fjospt.2012.3913&partnerID=40&md5=be2e2e31129bdab0bf8028512da0f035","University of the Sciences, Samson College of Health Professions, Department of Physical Therapy, Philadelphia, PA 19104., 600 South 43rd Street, United States; Ohio University, Athens, OH, United States; Spaulding National Running Center, Harvard Medical School, Cambridge MA, United States; Department of Mechanical Engineering, University of Delaware, Newark, DE, United States","Silbernagel K.G., University of the Sciences, Samson College of Health Professions, Department of Physical Therapy, Philadelphia, PA 19104., 600 South 43rd Street, United States; Willy R., Ohio University, Athens, OH, United States; Davis I., Spaulding National Running Center, Harvard Medical School, Cambridge MA, United States, Department of Mechanical Engineering, University of Delaware, Newark, DE, United States","BACKGROUND: The Achilles tendon is the most frequently ruptured tendon, and the incidence of Achilles tendon rupture has increased in the last decade. The rupture generally occurs without any preceding warning signs, and therefore preinjury data are seldom available. This case represents a unique opportunity to compare preinjury running mechanics with postinjury evaluation in a patient with an Achilles tendon rupture. CASE DESCRIPTION: A 23-year-old female sustained a right complete Achilles tendon rupture while playing soccer. Running mechanics data were collected preinjury, as she was a healthy participant in a study on running analysis. In addition, patient-reported symptoms, physical activity level, strength, ankle range of motion, heel-rise ability, Achilles tendon length, and running kinetics were evaluated 1 year after surgical repair. OUTCOMES: During running, greater ankle dorsiflexion and eversion and rearfoot abduction were noted on the involved side postinjury when compared to preinjury data. In addition, postinjury, the magnitude of all kinetics data was lower on the involved limb when compared to the uninvolved limb. The involved side displayed differences in strength, ankle range of motion, heel rise, and tendon length when compared to the uninvolved side 1 year after injury. DISCUSSION: Despite a return to normal running routine and reports of only minor limitations with running, considerable changes were noted in running biomechanics 1 year after injury. Calf muscle weakness and Achilles tendon elongation were also found when comparing the involved and uninvolved sides.","Achilles tendon Total Rupture Score (ATRS); Biomechanics; Heel-rise test","","Aroen A., Helgo D., Granlund O.G., Bahr R., Contralateral tendon rupture risk is increased in individuals with a previous Achilles tendon rupture, Scandinavian Journal of Medicine and Science in Sports, 14, 1, pp. 30-33, (2004); Costa M.L., Kay D., Donell S.T., Gait abnormalities following rupture of the tendo Achillis. A pedobarographic assessment, Journal of Bone and Joint Surgery - Series B, 87, 8, pp. 1085-1088, (2005); Dempster W.T., Gabel W.C., Felts W.J., The anthropometry of the manual work space for the seated subject, Am J Phys Anthropol, 17, pp. 289-317, (1959); Don R., Ranavolo A., Cacchio A., Serrao M., Costabile F., Iachelli M., Camerota F., Frascarelli M., Santilli V., Relationship between recovery of calf-muscle biomechanical properties and gait pattern following surgery for achilles tendon rupture, Clinical Biomechanics, 22, 2, pp. 211-220, (2007); Fellin R.E., Manal K., Davis I.S., Comparison of lower extremity kinematic curves during overground and treadmill running, J Appl Biomech, 26, pp. 407-414, (2010); Flemister A.S., Neville C.G., Houck J., The relationship between ankle, hindfoot, and forefoot position and posterior tibial muscle excursion, Foot and Ankle International, 28, 4, pp. 448-455, (2007); Grimby G., Physical activity and muscle training in the elderly, Acta Medica Scandinavica, 220, SUPPL. 711, pp. 233-237, (1986); Hof A.L., Van Zandwijk J.P., Bobbert M.F., Mechanics of human triceps surae muscle in walking, running and jumping, Acta Physiologica Scandinavica, 174, 1, pp. 17-30, (2002); Houshian S., Tscherning T., Riegels-Nielsen P., The epidemiology of achilles tendon rupture in a Danish county, Injury, 29, 9, pp. 651-654, (1998); Jozsa L., Kannus P., Histopathological findings in spontaneous tendon ruptures, Scandinavian Journal of Medicine and Science in Sports, 7, 2, pp. 113-118, (1997); Kangas J., Pajala A., Ohtonen P., Leppilahti J., Achilles tendon elongation after rupture repair: A randomized comparison of 2 postoperative regimens, American Journal of Sports Medicine, 35, 1, pp. 59-64, (2007); Kannus P., Jozsa L., Histopathological changes preceding spontaneous rupture of a tendon. A controlled study of 891 patients, J Bone Joint Surg Am, 73, pp. 1507-1525, (1991); Kannus P., Natri A., Etiology and pathophysiology of tendon ruptures in sports, Scandinavian Journal of Medicine and Science in Sports, 7, 2, pp. 107-112, (1997); Kellam J.F., Hunter G.A., McElwain J.P., Review of the operative treatment of Achilles tendon rupture, Clinical Orthopaedics and Related Research, NO. 201, pp. 80-83, (1985); Khan R.J., Fick D., Brammar T.J., Crawford J., Parker M.J., Interventions for treating acute Achilles tendon ruptures, Cochrane Database Syst Rev, (2004); Lo I.K.Y., Kirkley A., Nonweiler B., Kumbhare D.A., Operative versus nonoperative treatment of acute achilles tendon ruptures: A quantitative review, Clinical Journal of Sport Medicine, 7, 3, pp. 207-211, (1997); Maffulli N., Ewen S.W.B., Waterston S.W., Reaper J., Barrass V., Tenocytes from ruptured and tendinopathic achilles tendons produce greater quantities of type III collagen than tenocytes from normal achilles tendons: An in vitro model of human tendon healing, American Journal of Sports Medicine, 28, 4, pp. 499-505, (2000); Mandelbaum B.R., Myerson M.S., Forster R., Achilles tendon ruptures. A new method of repair, early range of motion, and functional rehabilitation, Am J Sports Med, 23, pp. 392-395, (1995); Martin R.L., Irrgang J.J., Burdett R.G., Conti S.F., Van Swearingen J.M., Evidence of validity for the Foot and Ankle Ability Measure (FAAM), Foot and Ankle International, 26, 11, pp. 968-983, (2005); Mccomis G.P., Nawoczenski D.A., Dehaven K.E., Functional bracing for rupture of the Achilles tendon. Clinical results and analysis of ground-reaction forces and temporal data, Journal of Bone and Joint Surgery - Series A, 79, 12-79 A, pp. 1799-1808, (1997); Moller A., Astrom M., Westlin N.E., Increasing incidence of Achilles tendon rupture, Acta Orthopaedica Scandinavica, 67, 5, pp. 479-481, (1996); Mortensen N.H., Saether J., Steinke M.S., Staehr H., Mikkelsen S.S., Separation of tendon ends after Achilles tendon repair: A prospective, randomized, multicenter study, Orthopedics, 15, pp. 899-903, (1992); Mullaney M.J., McHugh M.P., Tyler T.F., Nicholas S.J., Lee S.J., Weakness in end-range plantar flexion after achilles tendon repair, American Journal of Sports Medicine, 34, 7, pp. 1120-1125, (2006); Nilsson-Helander K., Silbernagel K.G., Thomee R., Et al., Acute Achilles tendon rupture: A randomized, controlled study comparing surgical and nonsurgical treatments using validated outcome measures, Am J Sports Med, 38, pp. 2186-2193, (2010); Nilsson-Helander K., Thomee R., Gravare-Silbernagel K., Thomee P., Faxen E., Eriksson B.I., Karlsson J., The Achilles tendon Total Rupture Score (ATRS): Development and validation, American Journal of Sports Medicine, 35, 3, pp. 421-426, (2007); Pandy M.G., Lin Y.C., Kim H.J., Muscle coordination of mediolateral balance in normal walking, J Biomech, 43, pp. 2055-2064, (2010); Parekh S.G., Wray W.H., Brimmo Iii O., Sennett B.J., Wapner K.L., Epidemiology and outcomes of Achilles tendon ruptures in the National Football League, Foot Ankle Spec, 2, pp. 283-286, (2009); Rees J.D., Lichtwark G.A., Wolman R.L., Wilson A.M., The mechanism for efficacy of eccentric loading in Achilles tendon injury; An in vivo study in humans, Rheumatology (Oxford), 47, pp. 1493-1497, (2008); Riley P.O., Dicharry J., Franz J., Della Croce U., Wilder R.P., Kerrigan D.C., A kinematics and kinetic comparison of overground and treadmill running, Med Sci Sports Exerc, 40, pp. 1093-1100, (2008); Roos E.M., Brandsson S., Karlsson J., Validation of the foot and ankle outcome score for ankle ligament reconstruction, Foot and Ankle International, 22, 10, pp. 788-794, (2001); Silbernagel K.G., Nilsson-Helander K., Thomee R., Eriksson B.I., Karlsson J., A new measurement of heel-rise endurance with the ability to detect functional deficits in patients with Achilles tendon rupture, Knee Surg Sports Traumatol Arthrosc, 18, pp. 258-264, (2010); Suchak A.A., Bostick G., Reid D., Blitz S., Jomha N., The incidence of Achilles tendon ruptures in Edmonton, Canada, Foot and Ankle International, 26, 11, pp. 932-936, (2005); Tome J., Nawoczenski D.A., Flemister A., Houck J., Comparison of foot kinematics between subjects with posterior tibialis tendon dysfunction and healthy controls, Journal of Orthopaedic and Sports Physical Therapy, 36, 9, pp. 635-644, (2006); Van Sterkenburg M.N., Van Dijk C.N., Overview of reviews, Achilles Tendon Rupture: Current Concepts, pp. 34-48, (2008); Willits K., Amendola A., Bryant D., Et al., Operative versus nonoperative treatment of acute Achilles tendon ruptures: A multicenter randomized trial using accelerated functional rehabilitation, J Bone Joint Surg Am, 92, pp. 2767-2775, (2010)","K.G. Silbernagel; University of the Sciences, Samson College of Health Professions, Department of Physical Therapy, Philadelphia, PA 19104., 600 South 43rd Street, United States; email: k.silbernagel@usciences.edu","","Movement Science Media","01906011","","JOSPD","","English","J. Orthop. Sports Phys. Ther.","Article","Final","","Scopus","2-s2.0-84863618214" "Page R.M.; Marrin K.; Brogden C.M.; Greig M.","Page, Richard M. (56888317900); Marrin, Kelly (26654971000); Brogden, Chris M. (56888703200); Greig, Matt (23034263700)","56888317900; 26654971000; 56888703200; 23034263700","Biomechanical and physiological response to a contemporary soccer match-play simulation","2015","Journal of Strength and Conditioning Research","29","10","","2860","2866","6","30","10.1519/JSC.0000000000000949","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84943175503&doi=10.1519%2fJSC.0000000000000949&partnerID=40&md5=ff002b448cb8511110c4787333c405df","Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom","Page R.M., Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom; Marrin K., Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom; Brogden C.M., Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom; Greig M., Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom","The intermittent activity profile of soccer match play increases the complexity of the physical demands. Laboratory models of soccer match play have value in controlled intervention studies, developed around manipulations of the activity profile to elicit a desired physiological or biomechanical response. Contemporary notational analyses suggest a profile comprising clusters of repeat sprint efforts, with implications for both biomechanical and physiological load. Eighteen male soccer players completed a 90-minute treadmill protocol based on clusters of repeat sprint efforts. Each 15-minute bout of exercise was quantified for uniaxial (medial-lateral [PL ML ], anterior-posterior [PL AP ], and vertical [PL V ]) and triaxial PlayerLoad (PL Total). The relative contributions of the uniaxial PlayerLoad vectors (PL ML%, PL AP%, and PL V%) were also examined. In addition to rating of perceived exertion, the physiological response comprised heart rate, blood lactate concentration, and both peak and average oxygen consumption. Triaxial PlayerLoad increased (p 0.02) with exercise duration (T 0-15 206.26 ± 14.37 a.u. and T 45-60 214.51 ± 14.97 a.u.) and remained elevated throughout the second half. This fatigue effect was evident in both the PL ML and PL AP movement planes. The mean relative contributions of PL V%:PL AP%:PL ML% were consistent at ∼48:28:23. The physiological response was comparable with match play, and a similar magnitude of increase at ∼5% was observed in physiological parameters. Changes in PlayerLoad might reflect a change in movement quality with fatigue, with implications for both performance and injury risk, reflecting observations of match play. The high frequency of speed change elicits a 23% contribution from mediolateral load, negating the criticism of treadmill protocols as ""linear."" © 2015 National Strength and Conditioning Association.","accelerometry; biomechanics; fatigue; physiology; PlayerLoad","Adolescent; Adult; Biomechanical Phenomena; Exercise Test; Heart Rate; Humans; Lactic Acid; Male; Oxygen Consumption; Physical Exertion; Soccer; Young Adult; lactic acid; adolescent; adult; biomechanics; blood; exercise; exercise test; heart rate; human; male; oxygen consumption; physiology; procedures; soccer; young adult","Akenhead R., French D., Thompson K.G., Hayes P.R., The physiological consequences of acceleration during shuttle running, Int J Sports Med, 36, pp. 302-307, (2015); Akenhead R., Hayes P.R., Thompson K.G., French D., Diminutions of acceleration, and deceleration output during professional football match play, J Sci Med Sport, 16, pp. 556-561, (2013); Aoki H., O'Hata N., Kohno T., Morikawa T., Seki J., A 15-year prospective epidemiological account of acute traumatic injuries during official professional soccer league matches, Am J Sports Med, 40, pp. 1006-1015, (2012); Bangsbo J., Iaia F., Krustrup P., Metabolic response, and fatigue in soccer muscle creatine-phosphate utilization in soccer, Int J Sports Physiol Perform, 2, pp. 111-127, (2007); Barrett S., Guard A., Lovell R., Elite youth, and university-level versions of SAFT90 simulate the internal, and external loads of competitive soccer, Science, and Football, 7, pp. 95-100, (2013); Barrett S., Midgley A., Lovell R., Playerload: Reliability, convergent validity, and influence of unit position during treadmill running, Int J Sports Physiol Perform, 9, pp. 945-952, (2014); Barron D.J., Atkins S., Edmundson C., Fewtrell D., Accelerometer derived load according to playing position in competitive youth soccer, Int J Perform Anal Sport, 14, pp. 734-743, (2014); Borg G., Perceived exertion as an indicator of somatic stress, Scand J Rehabil Med, 2, pp. 92-98, (1970); Boyd L.J., Ball K., Aughey R.J., The reliability of minimaxx accelerometers for measuring physical activity in australian football, Int J Sports Physiol Perform, 6, pp. 311-321, (2011); Bradley P.S., Sheldon W., Wooster B., Olsen P., Boanes P., Krustrup P., High-intensity running in english fa premier league soccer matches, J Sports Sci, 27, pp. 159-168, (2009); Cormack S.J., Mooney M.G., Morgan W., McGuigan M.R., Influence of neuromuscular fatigue in accelerometer load in elite australian football players, Int J Sports Physiol Perform, 8, pp. 373-378, (2013); Dellal A., Keller D., Carling C., Chaouachi A., Wong D.P., Chamari K., Physiologic effects of directional changes in intermittent exercise in soccer players, J Strength Cond Res, 24, pp. 3219-3226, (2010); Di Salvo V., Baron R., Tschan H., Calderon Montero F.J., Bachl N., Pigozzi F., Performance characteristics according to playing position in elite soccer, Int J Sports Med, 28, pp. 222-227, (2007); Drust B., Reilly T., Cable N.T., Physiological responses to laboratory-based soccer-specific intermittent, and continuous exercise, J Sports Sci, 18, pp. 885-892, (2000); Greig M.P., McNaughton L.R., Lovell R.J., Physiological, and mechanical response to soccer-specific intermittent activity, and steady-state activity, Res Sports Med, 14, pp. 29-52, (2006); Greig M., Siegler J.C., Soccer-specific fatigue, and eccentric hamstrings muscle strength, J Athl Train, 44, pp. 180-184, (2009); Greig M., Walker-Johnson C., The influence of soccer-specific fatigue on functional stability, Phys Ther Sport, 8, pp. 185-190, (2007); Impellizzeri F.M., Rampinini E., Castagna C., Bishop D., Ferrari Bravo D., Tibaudi A., Wisloff U., Validity of a repeated-sprint test for football, Int J Sports Med, 29, pp. 899-905, (2008); Jones A.M., Doust J.H., A 1% treadmill grade most accurately reflects the energetic cost of outdoor running, J Sports Sci, 14, pp. 321-327, (1996); Kellis E., Katis A., Vrabas I.S., Effects of an intermittent exercise fatigue protocol on biomechanics of soccer kick performance, Scand J Med Sci Sports, 16, pp. 334-344, (2006); Kline C., Durstine J., Davis J., Moorre T., Devline T., Zielinski M., Youngstedt S., Circadian variation in sports performance, J App Physiol 1985, 102, pp. 641-649, (2007); Krustrup P., Mohr M., Steensberg A., Bencke J., Kjaer M., Bangsbo J., Muscle, and blood metabolites during a soccer game: Implications for sprint performance, Med Sci Sports Exerc, 38, pp. 1165-1174, (2006); Mohr M., Krustrup P., Bangsbo J., Match performance of highstandard soccer players with special reference to development of fatigue, J Sports Sci, 21, pp. 519-528, (2003); Mohr M., Nybo L., Grantham J., Raciniais S., Physiological responses, and physical performance during football in the heat, Plos One, 7, (2012); Mooney M.G., Cormack S., O'Brien B.J., Morgan W.M., McGuigan M., Impact of neuromuscular fatigue on match exercise intensity, and performance in elite Australian football, J Strength Cond Res, 27, pp. 166-173, (2013); Nicholas C.W., Nuttall F.E., Williams C., The loughborough intermittent shuttle test: A field test that simulates the activity pattern of soccer, J Sports Sci, 18, pp. 97-104, (2000); Raja Azidin R.M.F., Sankey S., Drust B., Robinson M.A., Vanrenterghem J., Effects of treadmill versus overground soccer match simulations on biomechanical markers of anterior cruciate ligament injury risk in side cutting, J Sports Sci, 13, pp. 1-10, (2015); Rampinini E., Sassi A., Morelli A., Mazzoni S., Fanchini M., Coutts A.J., Repeated-sprint ability in professional, and amateur soccer players, Appl Physiol Nutr Metab, 34, pp. 1048-1054, (2009); Reilly T., Energetics of high-intensity exercise (soccer) with particular reference to fatigue, J Sports Sci, 15, pp. 257-263, (1997); Scott B.R., Lockie R.G., Knight T.J., Clark A.C., Janse De Jonge X.A.X., A comparison of methods to quantify the in-season training load of professional soccer players, Int J Sports Physiol Perform, 8, pp. 195-202, (2013); Small K., McNaughton L., Greig M., Lovell R., The effects of multidirectional soccer-specific fatigue on markers of hamstring injury risk, J Sci Med Sport, 13, pp. 120-125, (2010); Small K., McNaughton L.R., Greig M., Lohkamp M., Lovell R., Soccer fatigue, sprinting, and hamstring injury risk, Int J Sports Med, 30, pp. 573-578, (2009); Spencer M., Lawrence S., Rechichi C., Bishop D., Dawson B., Goodman C., Time-motion analysis of elite field hockey, with special reference to repeated-sprint activity, J Sports Sci, 22, pp. 843-850, (2004); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer: An update, Sports Med, 35, pp. 501-536, (2005); Whitehead R., Wilson Butz J., Kozar B., Vaughn R.E., Stress, and performance: An application of Gray's three-factor arousal theory to basketball free-throw shooting, J Sports Sci, 14, pp. 393-401, (1996)","M. Greig; Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom; email: matt.greig@edgehill.ac.uk","","NSCA National Strength and Conditioning Association","10648011","","","25875368","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-84943175503" "Myer G.D.; Brunner H.I.; Melson P.G.; Paterno M.V.; Ford K.R.; Hewett T.E.","Myer, Gregory D. (6701852696); Brunner, Hermine I. (56528881700); Melson, Paula G. (8653625200); Paterno, Mark V. (6602774922); Ford, Kevin R. (7102539333); Hewett, Timothy E. (7005201943)","6701852696; 56528881700; 8653625200; 6602774922; 7102539333; 7005201943","Specialized neuromuscular training to improve neuromuscular function and biomechanics in a patient with quiescent juvenile rheumatoid arthritis","2005","Physical Therapy","85","8","","791","802","11","37","10.1093/ptj/85.8.791","https://www.scopus.com/inward/record.uri?eid=2-s2.0-23044472840&doi=10.1093%2fptj%2f85.8.791&partnerID=40&md5=97308db14a57a8f4a21faeac69c99638","Sports Medicine Biodynamics Center and Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, MLC 10001, Cincinnati, OH 45229, 3333 Burnet Ave, United States; Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Sports Medicine Biodynamics Center, Division of Occupational Therapy and Physical Therapy, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Sports Medicine Biodynamics Center and Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, Univ. of Cincinnati Coll. of Medicine, Pediatrics, Orthopaedic Surgery/Rehabilitation Sciences, Cincinnati, OH, United States","Myer G.D., Sports Medicine Biodynamics Center and Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, MLC 10001, Cincinnati, OH 45229, 3333 Burnet Ave, United States; Brunner H.I., Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Melson P.G., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Paterno M.V., Sports Medicine Biodynamics Center, Division of Occupational Therapy and Physical Therapy, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Ford K.R., Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Hewett T.E., Sports Medicine Biodynamics Center and Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, Univ. of Cincinnati Coll. of Medicine, Pediatrics, Orthopaedic Surgery/Rehabilitation Sciences, Cincinnati, OH, United States","Background and Purpose. The purpose of this case report is to describe a novel multidisciplinary approach for evaluating and preparing a patient with quiescent juvenile rheumatoid arthritis (JRA) for safe sports participation. Case Description. The patient was a 10-year-old girl with a history of bilateral knee arthritis who desired to participate in soccer and basketball. Range of motion and manual muscle testing of the lower extremity were within normal limits. Neuromuscular testing included kinematic and kinetic testing, isokinetic assessment, and postural stability testing. The patient's gait was near normal; however, she had narrowed step width and increased knee flexion at heel-strike. Landing analysis during a box drop vertical jump task showed increased and imbalanced (right versus left lower extremity) peak impact forces. The testing was followed by specialized neuromuscular training (SNT). Outcomes. Following SNT, heel-strike and step width were within normal limits, peak impact forces on the box drop test decreased by 31%, imbalance decreased by 46%, and vertical jump increased 15%. The isokinetic strength ratio between knee flexors and extensors and the overall balance measures were within normal limits and equal bilaterally. Discussion. Patients with quiescent JRA may have abnormal biomechanics, which could place them at increased risk for injury or future articular cartilage damage. Specialized neuromuscular training may have helped to decrease the patient's risk for future injury or disease progression.","Biomechanics; Gait; Injury prevention; Juvenile rheumatoid arthritis; Neuromuscular training; Sport participation","accident prevention; article; basketball; biomechanics; body posture; case report; extensor muscle; female; flexor muscle; gait; hamstring; human; isokinetic exercise; jumping; juvenile rheumatoid arthritis; kinematics; knee arthritis; knee function; muscle strength; muscle training; neuromuscular function; quadriceps femoris muscle; school child; sport","Weiss J.E., Ilowite N.T., Juvenile idiopathic arthritis, Pediatr Clin North Am, 52, pp. 413-442, (2005); Lawrence R.C., Helmick C.G., Arnett F.C., Et al., Estimates of the prevalence of arthritis and selected musculoskeletal disorders in the United States, Arthritis Rheum, 41, pp. 778-799, (1998); Reiff A.O., Developments in the treatment of juvenile arthritis, Expert Opin Pharmacother, 5, pp. 1485-1496, (2004); Emery H.M., Bowyer S.L., Sisung C.E., Rehabilitation of the child with a rheumatic disease, Pediatr Clin North Am, 42, pp. 1263-1283, (1995); Mow V.C., Proctor C.S., Kelly M.A., Biomechanics of articular cartilage, Basic Biomechanics of the Musculoskeletal System. 2nd Ed., (1989); Klepper S.E., Exercise and fitness in children with arthritis: Evidence of benefits for exercise and physical activity, Arthritis Rheum, 49, pp. 435-443, (2003); Simeonsson R.J., Leonardi M., Lollar D., Et al., Applying the International Classification of Functioning, Disability and Health (ICF) to measure childhood disability, Disabil Rehabil, 25, pp. 602-610, (2003); Guidelines for the management of rheumatoid arthritis: 2002 Update, Arthritis Rheum, 46, pp. 328-346, (2002); Munneke M., De Jong Z., Zwinderman A.H., Et al., Adherence and satisfaction of rheumatoid arthritis patients with a long-term intensive dynamic exercise program (RAPIT program), Arthritis Rheum, 49, pp. 665-672, (2003); Jong Z., Munneke M., Zwinderman A.H., Et al., Is a long-term high-intensity exercise program effective and safe in patients with rheumatoid arthritis? Results of a randomized controlled trial, Arthritis Rheum, 48, pp. 2415-2424, (2003); Finckh A., Iversen M., Liang M.H., The exercise prescription in rheumatoid arthritis: Primum non nocere, Arthritis Rheum, 48, pp. 2393-2395, (2003); Watkins M.A., Riddle D.L., Lamb R.L., Personius W.J., Reliability of goniometric measurements and visual estimates of knee range of motion obtained in a clinical setting, Phys Ther, 71, pp. 90-96, (1991); Boone D.C., Azen S.P., Lin C.M., Et al., Reliability of goniometric measurements, Phys Ther, 58, pp. 1355-1390, (1978); Kadaba M.P., Ramakrishnan H.K., Wootten M.E., Measurement of lower extremity kinematics during level walking, J Orthop Res, 8, pp. 383-392, (1990); Kadaba M.P., Ramakrishnan H.K., Wootten M.E., Et al., Repeatability of kinematic, kinetic, and electromyographic data in normal adult gait, J Orthop Res, 7, pp. 849-860, (1989); Fairburn P.S., Panagamuwa B., Falkonakis A., Et al., The use of multidisciplinary assessment and scientific measurement in advanced juvenile idiopathic arthritis can categorise gait deviations to guide treatment, Arch Dis Child, 87, pp. 160-165, (2002); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, pp. 1745-1750, (2003); Ford K.R., Myer G.D., Hewett T.E., Reliability of dynamic knee motion in female athletes, 27th Annual Meeting of the American Society of Biomechanics, (2003); Paterno M.V., Ford K.R., Myer G.D., Et al., Biomechanical limb asymmetries in female athletes 2 years following ACL reconstruction, Combined Sections Meeting of the American Physical Therapy Association, (2005); National percentile rankings, Exploder Training Manual, (2001); Stockbrugger B.A., Haennel R.G., Validity and reliability' of a medicine ball explosive power test, J Strength Cond Res, 15, pp. 431-438, (2001); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J Bone Joint Surg Am, 86, pp. 1601-1608, (2004); Hewett T.E., Myer G.D., Ford K.R., Prevention of anterior cruciate ligament injuries, Current Women's Health Reports, 1, pp. 218-224, (2001); 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Myer; Sports Medicine Biodynamics Center and Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, MLC 10001, Cincinnati, OH 45229, 3333 Burnet Ave, United States; email: greg.myer@cchmc.org","","American Physical Therapy Association","00319023","","PTHEA","16048426","English","Phys. Ther.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-23044472840" "Mok K.-M.; Bahr R.; Krosshaug T.","Mok, Kam-Ming (37070831800); Bahr, Roald (7102647460); Krosshaug, Tron (55888189500)","37070831800; 7102647460; 55888189500","Reliability of lower limb biomechanics in two sport-specific sidestep cutting tasks","2018","Sports Biomechanics","17","2","","157","167","10","37","10.1080/14763141.2016.1260766","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85014794488&doi=10.1080%2f14763141.2016.1260766&partnerID=40&md5=9a98dbf115dd81b632302f4663dd216c","Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong","Mok K.-M., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway, Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong; Bahr R., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Krosshaug T., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway","The purpose of this study was to assess the within- and between-session reliability of lower limb biomechanics in two sport-specific sidestep cutting tasks performed by elite female handball and football (soccer) athletes. Moreover, we aimed at determining the minimum number of trials necessary to obtain a reliable measure. Nineteen elite female handball and 22 elite female football (soccer) athletes (M ± SD: 22 ± 4 yrs old, 168 ± 5 cm, 66 ± 8 kg) were tested. The reliability was quantified by intra-class correlations (ICCs), typical error and Spearman’s rank correlation. Only minor improvements in ICC values were seen when increasing the number of trials from 3 to 5. Based on trials 1–3, all variables showed good to excellent within-session reliability (M ICC: 0.91, 95% CI: 0.89–0.93), fair to good between-session reliability (M ICC: 0.73, 95% CI: 0.70–0.76), moderately positive between-session rank correlation coefficients (M: 0.72, 95% CI: 0.69–0.76). A few frontal plane biomechanical variables displayed lower between-session reliability in the football task compared with the handball task. The moderately positive between-session ranking and practically small typical error implies that the measurements could reliably reproduce the ranking of individuals in multiple-session studies. 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A mathematical inertia model of the human body, Journal of Biomechanics, 23, pp. 67-74, (1990); Zatsiorsky V., Seluyanov V., The mass and inertia characteristics of the main segments of the human body, Biomechanics VIII-B, pp. 1152-1159, (1983); Zebis M.K., Andersen L.L., Bencke J., Kjaer M., Aagaard P., Identification of athletes at future risk of anterior cruciate ligament ruptures by neuromuscular screening, The American Journal of Sports Medicine, 37, pp. 1967-1973, (2009); Zou K.H., Tuncali K., Silverman S.G., Correlation and simple linear regression, Radiology, 227, pp. 617-628, (2003)","T. Krosshaug; Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; email: tron.krosshaug@nih.no","","Routledge","14763141","","","28281390","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-85014794488" "Zernicke R.F.; Roberts E.M.","Zernicke, Ronald F. (7005895320); Roberts, Elizabeth M. (7402580196)","7005895320; 7402580196","Lower extremity forces and torques during systematic variation of non-weight bearing motion","1978","Medicine and Science in Sports","10","1","","21","28","7","25","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0017880815&partnerID=40&md5=2f37f6733f8669d1de9541e38430e8c7","Department of Physical Education, The University of Wisconsin, Madiso, United States","Zernicke R.F., Department of Physical Education, The University of Wisconsin, Madiso, United States; Roberts E.M., Department of Physical Education, The University of Wisconsin, Madiso, United States","Component and resultant external forces and torques at ankle, knee, and hip joints of unrestrained lower extremity motion were computed as resultant limb velocities were systematically changed. Cinematographic and modeling techniques were used to analyze 45 trials of five skilled soccer players who performed slow, medium, and fast velocity kicks. A model of the lower extremity was incorporated, with kinematic data and segment mass estimates, into computer programs to quantify the mechanical variables. Monotonic increases in magnitudes of all kinetic elements occurred as the velocity of kicking was increased. Significant differences were also observed in the maximum values of the net parallel and perpendicular external force actions, and resultant torques at the joints with changes in limb velocity. © 1978 The American College of Sports Medicine.","External joint forces; Joint torques; Kicking; Kinematics; Kinetics; Rigid body mechanics","Ankle; Biomechanics; Hip; Human; Knee; Leg; Male; Movement; Soccer; Sports","Barnett C.H., Cobbold A.F., Lubrication within living joints, J. Bonejt. Surg, 44, pp. 662-674, (1962); Bartholomew S.H., Series 11, Issue, 19, (1952); Bresler B., Frankel J.P., The forces and moments in the leg during level walking, Trans.A.S.M.E, 72, pp. 27-36, (1950); Dempster W.T., Dempster W.T., Space requirements of the seated operator, WADC Technical Report, 155, (1955); Dillman D.J., A kinetic analysis of the recovery leg in sprint running. In Cooper, J.M. (ed.) Selected Topics on Biomechanics, The Athletic Institute, pp. 137-165, (1971); Fischer O., Der gangdes menschen. Abd. D. Konigl. Sachs. Ge-sellsch d. Wissensch. Math, Phys, 353, pp. 1895-1904; Geisser S., Greenhouse S.W., An extension of Box’s results on the use of the F distribution in multivariate analysis, Ann. Math. Stat, 29, pp. 885-891, (1958); Glass G.V., Stanley J.C., Statistical methods in education and psychology, Prentice-Hall, (1970); Huang T.C., Engineering Mechanics, 2, (1967); Huang T.C., Roberts E.M., Youm Y., Biomechanical Analysis of Kicking; Kirk R.L., Procedures for the Behavioral Sciences. Brooks/Cole, (1968); Macmillan M.B., The determinants of the flight of the kicked football. Res, Quart, 46, pp. 48-57, (1975); McCutchen C.W., The frictional properties of animal joints, Wear, 5, pp. 1-17, (1962); Morrison J.B., Bi, Bio. Med. Engineering, 3, pp. 164-170, (1968); Paul J.P., The biomechanics of the hip and its clinical relevance, Proc. Roy. Sot-. Med, 59, pp. 943-948, (1966); Paul J.P., Forces transmitted by joints in the human body, Proc. Instn. Mech. Engineers, 181, 3, pp. 8-15, (1967); Plagenhoef S.C., A Cinematographic Analysis. Prentice-Hall, (1971); Reinsch C.H., Smoothing by spline functions, Num. Math, 10, (1967); Roberts E.M., Metcalfe A., Mechanical analysis of kicking, Karger, Basel, pp. 315-319, (1968); Roberts E.M., Zernicke R.F., Youm Y., Huang T.C., Kinetic parameters of kicking. In Nelson, R.C. And C.A. Morehouse (eds.), Biomechanics IV. University Park Press, pp. 157-162, (1974); Rydell N., Acta Or- thopaedica Scand, Suppl, 88, pp. 1-132, (1966); Seireg A., Arvikar R.J., A mathematical model for evaluation of force in lower extremities of the muscular skeletal system, J. Bio- Mechanics, 6, pp. 313-326, (1973); Seireg A., Arvikar R.J., The prediction of muscular load sharing and joint forces in the lower extremities during walking, J. Biomechanics, 8, pp. 89-102, (1975); Sciieffe J., A method for judging all contrasts in the analysis of variance, Bionwtrika, 40, pp. 87-104, (1953); Youm Y., Roberts E.M., Huang T.C., Zernicke R.F., Kinesiology research technical report No, 1:02. Departments of Engineering Mechanics and Physical Education, (1974); Zernicke R.F., Caldwell G., Robehts E.M., Fitting biomechanical data with cubic spline functions, Res. Quart, 47, pp. 9-19, (1976); Zernicke R.F., Roberts E.M., Human lower extremity kinetic relationships during systematic variations in resultant limb velocity, Biomechanics V-B, pp. 20-25, (1976)","","","","00257990","","","672547","English","Med. Sci. Sports","Article","Final","","Scopus","2-s2.0-0017880815" "Thompson-Kolesar J.A.; Gatewood C.T.; Tran A.A.; Silder A.; Shultz R.; Delp S.L.; Dragoo J.L.","Thompson-Kolesar, Julie A. (57204882084); Gatewood, Corey T. (57191365648); Tran, Andrew A. (56949976200); Silder, Amy (18438046700); Shultz, Rebecca (56899833900); Delp, Scott L. (7006426955); Dragoo, Jason L. (6603663340)","57204882084; 57191365648; 56949976200; 18438046700; 56899833900; 7006426955; 6603663340","Age Influences Biomechanical Changes After Participation in an Anterior Cruciate Ligament Injury Prevention Program","2018","American Journal of Sports Medicine","46","3","","598","606","8","30","10.1177/0363546517744313","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042881679&doi=10.1177%2f0363546517744313&partnerID=40&md5=c0d6892ca6619b85e6b35b0b895d85b0","Department of Bioengineering, Stanford University, Stanford, CA, United States; Department of Orthopaedic Surgery, Stanford University, Stanford, CA, United States; School of Medicine, Stanford University, Stanford, CA, United States; Department of Mechanical Engineering, Stanford University, Stanford, CA, United States","Thompson-Kolesar J.A., Department of Bioengineering, Stanford University, Stanford, CA, United States, Department of Orthopaedic Surgery, Stanford University, Stanford, CA, United States; Gatewood C.T., Department of Orthopaedic Surgery, Stanford University, Stanford, CA, United States; Tran A.A., Department of Orthopaedic Surgery, Stanford University, Stanford, CA, United States, School of Medicine, Stanford University, Stanford, CA, United States; Silder A., Department of Bioengineering, Stanford University, Stanford, CA, United States; Shultz R., Department of Orthopaedic Surgery, Stanford University, Stanford, CA, United States; Delp S.L., Department of Bioengineering, Stanford University, Stanford, CA, United States, Department of Orthopaedic Surgery, Stanford University, Stanford, CA, United States, Department of Mechanical Engineering, Stanford University, Stanford, CA, United States; Dragoo J.L., Department of Orthopaedic Surgery, Stanford University, Stanford, CA, United States","Background: The prevalence of anterior cruciate ligament (ACL) injuries increases during maturation and peaks during late adolescence. Previous studies suggested an age-related association between participation in injury prevention programs and reduction of ACL injury. However, few studies have investigated differences in biomechanical changes after injury prevention programs between preadolescent and adolescent athletes. Purpose/Hypothesis: The purpose was to investigate the influence of age on the effects of the FIFA Medical and Research Centre (F-MARC) 11+ injury prevention warm-up program on differences in biomechanical risk factors for ACL injury between preadolescent and adolescent female soccer players. It was hypothesized that the ACL injury risk factors of knee valgus angle and moment would be greater at baseline but would improve more after training for preadolescent athletes than adolescent athletes. It was further hypothesized that flexor-extensor muscle co-contraction would increase after training for both preadolescent and adolescent athletes. Study Design: Controlled laboratory study. Methods: Institutional Review Board–approved written consent was obtained for 51 preadolescent female athletes aged 10 to 12 years (intervention: n = 28, 11.8 ± 0.8 years; control: n = 23, 11.2 ± 0.6 years) and 43 adolescent female athletes aged 14 to 18 years (intervention: n = 22, 15.9 ± 0.9 years; control: n = 21, 15.7 ± 1.1 years). The intervention groups participated in 15 in-season sessions of the F-MARC 11+ program 2 times per week. Pre- and postseason motion capture data were collected during 4 tasks: preplanned cutting, unanticipated cutting, double-legged jump, and single-legged jump. Lower extremity joint angles and moments were estimated through biomechanical modeling. Knee flexor-extensor muscle co-contraction was estimated from surface electromyography. Results: At baseline, preadolescent athletes displayed greater initial contact and peak knee valgus angles during all activities when compared with the adolescent athletes, but knee valgus moment was not significantly different between age groups. After intervention training, preadolescent athletes improved and decreased their initial contact knee valgus angle (–1.24° ± 0.36°; P =.036) as well as their peak knee valgus moment (–0.57 ± 0.27 percentage body weight × height; P =.033) during the double-legged jump task, as compared with adolescent athletes in the intervention. Compared with adolescent athletes, preadolescent athletes displayed higher weight acceptance flexor-extensor muscle co-contraction at baseline during all activities (P <.05). After intervention training, preadolescent athletes displayed an increase in precontact flexor-extensor muscle co-contraction during preplanned cutting as compared with adolescent intervention athletes (0.07 ± 0.02 vs –0.30 ± 0.27, respectively; P =.002). Conclusion: The F-MARC 11+ program may be more effective at improving some risk factors for ACL injury among preadolescent female athletes than adolescent athletes, notably by reducing knee valgus angle and moment during a double-legged jump landing. Clinical Relevance: ACL prevention programs may be more effective if administered early in an athlete’s career, as younger athletes may be more likely to adapt new biomechanical movement patterns. © 2017, © 2017 The Author(s).","adolescent and preadolescent athletes; age comparison; biomechanics; intervention program; muscle co-contraction","Adolescent; Age Factors; Anterior Cruciate Ligament Injuries; Athletes; Athletic Injuries; Biomechanical Phenomena; Child; Electromyography; Female; Humans; Knee; Knee Joint; Lower Extremity; Muscle, Skeletal; Risk Factors; Soccer; Warm-Up Exercise; adolescent; age; anterior cruciate ligament injury; athlete; biomechanics; child; electromyography; female; human; injuries; knee; lower limb; physiology; risk factor; skeletal muscle; soccer; sport injury; warm up","Andrish J.T., Anterior cruciate ligament injuries in the skeletally immature patient, Am J Orthop (Belle Mead NJ), 30, 2, pp. 103-110, (2001); Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer: NCAA data and review of literature, Am J Sports Med, 23, 6, pp. 694-701, (1995); Basmajian J.V., Motor learning and control: a working hypothesis, Arch Phys Med Rehabil, 58, 1, pp. 38-41, (1977); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Med Sci Sports Exerc, 35, 1, pp. 119-127, (2003); Braun H.J., Shultz R., Malone M., Leatherwood W.E., Silder A., Dragoo J.L., Differences in ACL biomechanical risk factors between field hockey and lacrosse female athletes, Knee Surg Sports Traumatol Arthrosc, 23, 4, pp. 1065-1070, (2015); Clanton T.O., DeLee J.C., Sanders B., Neidre A., Knee ligament injuries in children, J Bone Joint Surg Am, 61, 8, pp. 1195-1201, (1979); Croce R.V., Russell P.J., Swartz E.E., Decoster L.C., Knee muscular response strategies differ by developmental level but not gender during jump landing, Electromyogr Clin Neurophysiol, 44, 6, pp. 339-348, (2004); da Fonseca S.T., Vaz D.V., de Aquino C.F., Bricio R.S., Muscular co-contraction during walking and landing from a jump: comparison between genders and influence of activity level, J Electromyogr Kinesiol, 16, 3, pp. 273-280, (2006); Davids K., Lees A., Burwitz L., Understanding and measuring coordination and control in kicking skills in soccer: implications for talent identification and skill acquisition, J Sports Sci, 18, 9, pp. 703-714, (2000); DeHaven K.E., Lintner D.M., Athletic injuries: comparison by age, sport, and gender, Am J Sports Med, 14, 3, pp. 218-224, (1986); Delp S.L., Anderson F.C., Arnold A.S., Et al., OpenSim: open-source software to create and analyze dynamic simulations of movement, IEEE Trans Biomed Eng, 54, 11, pp. 1940-1950, (2007); DiStefano L.J., Padua D.A., DiStefano M.J., Marshall S.W., Influence of age, sex, technique, and exercise program on movement patterns after an anterior cruciate ligament injury prevention program in youth soccer players, Am J Sports Med, 37, 3, pp. 495-505, (2009); Ford K.R., Shapiro R., Myer G.D., Van Den Bogert A.J., Hewett T.E., Longitudinal sex differences during landing in knee abduction in young athletes, Med Sci Sports Exerc, 42, 10, pp. 1923-1931, (2010); Ford K.R., van den Bogert J., Myer G.D., Shapiro R., Hewett T.E., The effects of age and skill level on knee musculature co-contraction during functional activities: a systematic review, Br J Sports Med, 42, 7, pp. 561-566, (2008); Frost G., Bar-Or O., Dowling J., Dyson K., Explaining differences in the metabolic cost and efficiency of treadmill locomotion in children, J Sports Sci, 20, 6, pp. 451-461, (2002); Hamstra-Wright K.L., Swanik C.B., Sitler M.R., Et al., Gender comparisons of dynamic restraint and motor skill in children, Clin J Sport Med, 16, 1, pp. 56-62, (2006); Hass C.J., Schick E.A., Tillman M.D., Chow J.W., Brunt D., Cauraugh J.H., Knee biomechanics during landings: comparison of pre- and postpubescent females, Med Sci Sports Exerc, 37, 1, pp. 100-107, (2005); Hermens H.J., Freriks B., Disselhorst-Klug C., Rau G., Development of recommendations for SEMG sensors and sensor placement procedures, J Electromyogr Kinesiol, 10, 5, pp. 361-374, (2000); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes: a prospective study, Am J Sports Med, 27, 6, pp. 699-706, (1999); Hewett T.E., Myer G.D., Ford K.R., Anterior cruciate ligament injuries in female athletes: part 1, mechanisms and risk factors, Am J Sports Med, 34, 2, pp. 299-311, (2006); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J Bone Joint Surg Am, 86, 8, pp. 1601-1608, (2004); Hewett T.E., Myer G.D., Kiefer A.W., Ford K.R., Longitudinal increases in knee abduction moments in females during adolescent growth, Med Sci Sports Exerc, 47, 12, pp. 2579-2585, (2015); Lagasse P., Neuromuscular Considerations, (1987); Lloyd D.G., Buchanan T.S., Strategies of muscular support of varus and valgus isometric loads at the human knee, J Biomech, 34, 10, pp. 1257-1267, (2001); Loeb G.E., Gans C., Electromyography for Experimentalists, (1986); MacWilliams B.A., Wilson D.R., DesJardins J.D., Romero J., Chao E.Y., Hamstrings cocontraction reduces internal rotation, anterior translation, and anterior cruciate ligament load in weight-bearing flexion, J Orthop Res, 17, 6, pp. 817-822, (1999); Myer G.D., Ford K.R., Brent J.L., Hewett T.E., Differential neuromuscular training effects on ACL injury risk factors in”high-risk” versus “low-risk” athletes, BMC Musculoskelet Disord, 8, (2007); Myer G.D., Sugimoto D., Thomas S., Hewett T.E., The influence of age on the effectiveness of neuromuscular training to reduce anterior cruciate ligament injury in female athletes: a meta-analysis, Am J Sports Med, 41, 1, pp. 203-215, (2013); Quatman C.E., Ford K.R., Myer G.D., Hewett T.E., Maturation leads to gender differences in landing force and vertical jump performance: a longitudinal study, Am J Sports Med, 34, 5, pp. 806-813, (2006); Rudolph K.S., Axe M.J., Buchanan T.S., Scholz J.P., Snyder-Mackler L., Dynamic stability in the anterior cruciate ligament deficient knee, Knee Surg Sports Traumatol Arthrosc, 9, 2, pp. 62-71, (2001); Russell P.J., Croce R.V., Swartz E.E., Decoster L.C., Knee-muscle activation during landings: developmental and gender comparisons, Med Sci Sports Exerc, 39, 1, pp. 159-170, (2007); Schmidt R.A., Lee T.D., Motor Control and Learning: A Behavioral Emphasis, (1999); Sigward S., Powers C.M., The influence of experience on knee mechanics during side-step cutting in females, Clin Biomech (Bristol, Avon), 21, 7, pp. 740-747, (2006); Soligard T., Myklebust G., Steffen K., Et al., Comprehensive warm-up programme to prevent injuries in young female footballers: cluster randomised controlled trial, BMJ, 337, (2008); Swartz E.E., Decoster L.C., Russell P.J., Croce R.V., Effects of developmental stage and sex on lower extremity kinematics and vertical ground reaction forces during landing, J Athl Train, 40, 1, pp. 9-14, (2005); Thompson J.A., Tran A.A., Gatewood C.T., Et al., Biomechanical effects of an injury prevention program in preadolescent female soccer athletes, Am J Sports Med, 45, 2, pp. 294-301, (2017); Zebis M.K., Andersen L.L., Brandt M., Et al., Effects of evidence-based prevention training on neuromuscular and biomechanical risk factors for ACL injury in adolescent female athletes: a randomised controlled trial, Br J Sports Med, 50, 9, pp. 552-557, (2016)","J.L. Dragoo; Department of Orthopaedic Surgery, Stanford University, Redwood City, 450 Broadway, MC 6342, 94063, United States; email: jdragoo@stanford.edu","","SAGE Publications Inc.","03635465","","AJSMD","29281799","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-85042881679" "Katis A.; Kellis E.; Lees A.","Katis, Athanasios (23135001400); Kellis, Eleftherios (6603815400); Lees, Adrian (7202900498)","23135001400; 6603815400; 7202900498","Age and gender differences in kinematics of powerful instep kicks in soccer","2015","Sports Biomechanics","14","3","","287","299","12","30","10.1080/14763141.2015.1056221","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946483098&doi=10.1080%2f14763141.2015.1056221&partnerID=40&md5=396d5389ab81df34e9c66925275884cf","Department of Physical Education and Sports Sciences of Serres, Laboratory of Neuromechanics, Aristotle University of Thessaloniki, Serres, Greece; Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom","Katis A., Department of Physical Education and Sports Sciences of Serres, Laboratory of Neuromechanics, Aristotle University of Thessaloniki, Serres, Greece; Kellis E., Department of Physical Education and Sports Sciences of Serres, Laboratory of Neuromechanics, Aristotle University of Thessaloniki, Serres, Greece; Lees A., Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom","Soccer kicking training should be adjusted to the characteristics of the athletes. Therefore, examination of differences in kicking kinematics of females and pubertal players relative to males is worthwhile. The purpose of the study was to compare kicking kinematics and segmental sequence parameters between male, female, and pubertal players. Ten adult male, ten adult female, and ten male pubertal players participated in the study. Participants performed five consecutive kicking trials of a stationary ball, as powerful as they could. Analysis of variance showed significantly higher ball velocity, higher joint linear velocities for the knee and the hip, and higher angular velocities of the knee and the ankle for males compared to female and pubertal players (p < 0.05). Similarly, the peak joint velocity was achieved significantly closer to ball impact in males compared to other groups (p < 0.05). Males also showed a more plantarflexed ankle immediately before ball impact (p < 0.05). Females and pubertal players may benefit from skill training aiming to increase ankle plantarflexion and hip flexion prior to ball impact, and to adjust thigh and shank motion, such that the shank–foot segment travels through a higher range of motion and with a greater velocity. © 2015, Taylor & Francis.","biomechanics; female athletes; Football; kicking; motion analysis","Adult; Age Factors; Ankle; Biomechanical Phenomena; Female; Hip; Humans; Knee; Male; Motor Skills; Sex Factors; Soccer; Time and Motion Studies; Young Adult; adult; age; ankle; biomechanics; female; hip; human; knee; male; motor performance; physiology; sex difference; soccer; task performance; young adult","Abdel-Aziz Y.I., Karara H.M., Direct linear transformation from comparator coordinates into object space coordinates in close-range photogrammetry, Proceedings of the ASP/UI symposium on close-range photogrammetry, pp. 1-18, (1971); Anderson D.I., Sidaway B., Co-ordination changes associated with practice of a soccer kick, Research Quarterly for Exercise and Sport, 65, pp. 93-99, (1994); Asai T., Carre M., Akatsuka T., Haake S., The curve kick of a football I: Impact with the foot, Sports Engineering, 5, pp. 183-192, (2002); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Barfield W.R., Kirkendall D., Yu B., Kinematic instep kicking differences between elite female and male soccer players, Journal of Sports Science and Medicine, 3, pp. 72-79, (2002); Bloomfield J., Elliott B., Davies S., Development of the soccer kick: A cinematographical analysis, Journal of Human Movement Studies, 5, pp. 152-159, (1979); Brophy R.H., Backus S., Kraszewski A.P., Steele B.C., Ma Y., Osei D., Williams R.J., Differences between sexes in lower extremity alignment and muscle activation during soccer kick, Journal of Bone and Joint Surgery (American Volume), 92, pp. 2050-2058, (2010); Bull-Andersen T., Dorge H., Thomsen F., Collisions in soccer kicking, Sports Engineering, 2, pp. 121-125, (1999); Capranica L., Cama G., Fanton F., Tessitore A., Figura F., Force and power of preferred and non-preferred leg in young soccer players, Journal of Sports Medicine and Physical Fitness, 32, pp. 358-363, (1992); Chow R.S., Medri M.K., Martin D.C., Leekam R.N., Agur A.M., McKee N.H., Sonographic studies of human soleus and gastrocnemius muscle architecture: Gender variability, European Journal of Applied Physiology, 82, pp. 236-244, (2000); Dempster W.T., Space requirements of the seated operator (WADC-TR, 55-159), (1955); Dorge H., Bull-Andersen T., Sorensen H., Simonsen E., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, pp. 293-299, (2002); Foure A., Cornu C., McNair P.J., Nordez A., Gender differences in both active and passive parts of the plantar flexors series elastic component stiffness and geometrical parameters of the muscle-tendon complex, Journal of Orthopaedic Research, 30, pp. 707-712, (2012); Hodges N.J., Hayes S., Horn R.R., Williams A.M., Changes in co-ordination, control and outcome as a result of extended practice on a novel motor skill, Ergonomics, 48, pp. 1672-1685, (2005); Kannas T., Kellis E., Arampatzi F., de Villarreal E.S., Medial gastrocnemius architectural properties during isometric contractions in boys and men, Pediatric Exercise Science, 22, pp. 152-164, (2010); Katis A., Kellis E., Is soccer kick performance better after a ‘faking’ (cutting) maneuver task?, Sports Biomechanics, 10, pp. 35-45, (2011); Kellis E., Hatzitaki V., Development of neuromuscular coordination with implications in motor control, Paediatric biomechanics and motor control, pp. 50-70, (2011); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Science and Medicine, 6, pp. 154-165, (2007); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, pp. 805-817, (2010); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, pp. 917-927, (1998); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 441-448, (1988); Lyle M.A., Sigward S.M., Tsai L.C., Pollard C.D., Powers C.M., Influence of maturation on instep kick biomechanics in female soccer athletes, Medicine and Science in Sports and Exercise, 43, pp. 1948-1954, (2011); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 24, pp. 529-541, (2006); Nunome H., Lake M., Georgakis A., Stergioulas L., Impact phase kinematics of instep kicking in soccer, Journal of Sports Sciences, 24, pp. 11-22, (2006); O'Brien T.D., Reeves N.D., Baltzopoulos V., Jones D.A., Maganaris C.N., Mechanical properties of the patellar tendon in adults and children, Journal of Biomechanics, 43, pp. 1190-1195, (2010); Opavsky P., An investigation of linear and angular kinematics of the leg during two types of soccer kick, Science and Football, pp. 456-459, (1988); Orloff H., Sumida B., Chow J., Habibi L., Fujino A., Kramer B., Ground reaction forces and kinematics of plant leg position during instep kicking in male and female collegiate soccer players, Sports Biomechanics, 7, pp. 238-247, (2008); Shan G., Influence of gender and experience on the maximal instep soccer kick, European Journal of Sport Science, 9, pp. 107-114, (2009); Young W., Rath D., Enhancing foot velocity in football kicking: The role of strength training, Journal of Strength and Conditioning Research, 25, pp. 561-566, (2011)","A. Katis; Department of Physical Education and Sports Sciences of Serres, Aristotle University of Thessaloniki, Laboratory of Neuromechanics, Florina, Monastiriou 114, 53100, Greece; email: akatis@phed-sr.auth.gr","","Routledge","14763141","","","26211619","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-84946483098" "Zago M.; Piovan A.G.; Annoni I.; Ciprandi D.; Iaia F.M.; Sforza C.","Zago, Matteo (57220045130); Piovan, Andrea Gianluca (57195460009); Annoni, Isabella (56016442400); Ciprandi, Daniela (56681112700); Iaia, F. Marcello (14021728700); Sforza, Chiarella (7005225305)","57220045130; 57195460009; 56016442400; 56681112700; 14021728700; 7005225305","Dribbling determinants in sub-elite youth soccer players","2016","Journal of Sports Sciences","34","5","","411","419","8","34","10.1080/02640414.2015.1057210","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84975509876&doi=10.1080%2f02640414.2015.1057210&partnerID=40&md5=f039791d1adbe9b1e2cf74951aa5c2aa","Department of Biomedical Sciences for Health, Università degli Studi di Milano, via Mangiagalli 31, Milano, 20133, Italy","Zago M., Department of Biomedical Sciences for Health, Università degli Studi di Milano, via Mangiagalli 31, Milano, 20133, Italy; Piovan A.G., Department of Biomedical Sciences for Health, Università degli Studi di Milano, via Mangiagalli 31, Milano, 20133, Italy; Annoni I., Department of Biomedical Sciences for Health, Università degli Studi di Milano, via Mangiagalli 31, Milano, 20133, Italy; Ciprandi D., Department of Biomedical Sciences for Health, Università degli Studi di Milano, via Mangiagalli 31, Milano, 20133, Italy; Iaia F.M., Department of Biomedical Sciences for Health, Università degli Studi di Milano, via Mangiagalli 31, Milano, 20133, Italy; Sforza C., Department of Biomedical Sciences for Health, Università degli Studi di Milano, via Mangiagalli 31, Milano, 20133, Italy","Dribbling speed in soccer is considered critical to the outcome of the game and can assist in the talent identification process. However, little is known about the biomechanics of this skill. By means of a motion capture system, we aimed to quantitatively investigate the determinants of effective dribbling skill in a group of 10 Under-13 sub-elite players, divided by the median-split technique according to their dribbling test time (faster and slower groups). Foot-ball contacts cadence, centre of mass (CoM), ranges of motion (RoM), velocity and acceleration, as well as stride length, cadence and variability were computed. Hip and knee joint RoMs were also considered. Faster players, as compared to slower players, showed a 30% higher foot-ball cadence (3.0±0.1 vs. 2.3±0.2 contacts·s−1, P<0.01); reduced CoM mediolateral (0.91±0.05 vs. 1.14±0.16m, P<0.05) and vertical (0.19±0.01 vs. 0.25±0.03m, P<0.05) RoMs; higher right stride cadence (+20%, P<0.05) with lower variability (P<0.05); reduced hip and knee flexion RoMs (P<0.05). In conclusion, faster players are able to run with the ball through a shorter path in a more economical way. To effectively develop dribbling skill, coaches are encouraged to design specific practices where high stride frequency and narrow run trajectories are required © 2015 Taylor & Francis.","body centre of mass; football kinematics; sport biomechanics; technical skills","Acceleration; Anthropometry; Biomechanical Phenomena; Child; Gait; Hip Joint; Humans; Knee Joint; Motor Skills; Range of Motion, Articular; Soccer; acceleration; anthropometry; biomechanics; child; gait; hip; human; joint characteristics and functions; knee; motor performance; physiology; soccer","Ali A., Measuring soccer skill performance: A review, Scandinavian Journal of Medicine & Science in Sports, 21, 2, pp. 170-183, (2011); Bangsbo J., Iaia F.M., Williams A.M., Principles of fitness training, Science and soccer, pp. 24-42, (2013); Bernstein N., The coordination and regulation of movements, (1967); Cavagna G., Heglund N., Taylor C., Mechanical work in terrestrial locomotion: Two basic mechanisms for minimising energy expenditure, American Journal of Physiology, 5, 233, pp. 243-261, (1977); 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Huijgen B., Elferink-Gemser M., Ali A., Visscher C., Soccer skill development in talented players, International Journal of Sports Medicine, 34, 8, pp. 720-726, (2013); Huijgen B.C.H., Elferink-Gemser M.T., Post W., Visscher C., Development of dribbling in talented youth soccer players aged 12–19 years: A longitudinal study, Journal of Sports Sciences, 28, 7, pp. 689-698, (2010); Huijgen B.C.H., Elferink-Gemser M.T., Post W.J., Visscher C., Soccer skill development in professionals, International Journal of Sports Medicine, 30, 8, pp. 585-591, (2009); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Science and Medicine, 6, pp. 154-165, (2007); Knapp B., Skill in sport: The attainment of proficiency, (1963); Ko Y.-G., Challis J.H., Newell K.M., Learning to coordinate redundant degrees of freedom in a dynamic balance task, Human Movement Science, 22, 1, pp. 47-66, (2003); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, 8, pp. 805-817, (2010); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine & Science in Sports & Exercise, 30, 6, (1998); Lugade V., Lin V., Chou L.-S., Center of mass and base of support interaction during gait, Gait & Posture, 33, 3, pp. 406-411, (2011); Malina R.M., Cumming S.P., Kontos A.P., Eisenmann J.C., Ribeiro B., Aroso J., Maturity-associated variation in sport-specific skills of youth soccer players aged 13–15 years, Journal of Sports Sciences, 23, 5, pp. 515-522, (2005); Manolopoulos E., Papadopoulos C., Kellis E., Effects of combined strength and kick coordination training on soccer kick biomechanics in amateur players, Scandinavian Journal of Medicine & Science in Sports, 16, 2, pp. 102-110, (2006); Mapelli A., Zago M., Fusini L., Galante D., Colombo A., Sforza C., Validation of a protocol for the estimation of three-dimensional body center of mass kinematics in sport, Gait & Posture, 39, 1, pp. 460-465, (2014); McCollum G., Leen T., Form and exploration of mechanical stability limits in erect stance, Journal of Motor Behavior, 21, pp. 225-244, (1989); Newell K.M., Vaillancourt D.E., Dimensional change in motor learning, Human Movement Science, 20, 4-5, pp. 695-715, (2001); Perry J., Burnfield J.M., Gait analysis: Normal and pathological function, (2010); Rebelo A., Brito J., Maia J., Coelho-e-Silva M.J., Figueiredo A.J., Bangsbo J., Seabra A., Anthropometric characteristics, physical fitness and technical performance of under-19 soccer players by competitive level and field position, International Journal of Sports Medicine, 34, 4, pp. 312-317, (2013); Reilly T., Williams A.M., Nevill A., Franks A., A multidisciplinary approach to talent identification in soccer, Journal of Sports Sciences, 18, 9, pp. 695-702, (2000); Russell M., Kingsley M., Influence of exercise on skill proficiency in soccer, Sports Medicine, 41, 7, pp. 523-539, (2011); Russell M., Rees G., Benton D., Kingsley M., An exercise protocol that replicates soccer match-play, International Journal of Sports Medicine, 32, 7, pp. 511-518, (2011); Sadeghi H., Allard P., Prince F., Labelle H., Symmetry and limb dominance in able-bodied gait: A review, Gait & Posture, 12, 1, pp. 34-45, (2000); Sheppard J.M., Young W.B., Agility literature review: Classifications, training and testing, Journal of Sports Sciences, 24, 9, pp. 919-932, (2006); Utley A., Steenbergen B., Astill S.L., Ball catching in children with developmental coordination disorder: Control of degrees of freedom, Developmental Medicine and Child Neurology, 49, 1, pp. 34-38, (2007); Verrel J., Pologe S., Manselle W., Lindenberger U., Woollacott M., Coordination of degrees of freedom and stabilization of task variables in a complex motor skill: Expertise-related differences in cello bowing, Experimental Brain Research, 224, 3, pp. 323-334, (2013); Waldron M., Murphy A., A comparison of physical abilities and match performance characteristics among elite and subelite under-14 soccer players, Pediatric Exercise Science, 25, 15, pp. 423-434, (2013); Winter D.A., Biomechanics and motor control of human movement, (1990); Zago M., Motta A.F., Mapelli A., Annoni I., Galvani C., Sforza C., Effect of leg dominance on the center‐of‐mass kinematics during an inside‐of‐the‐foot kick in amateur soccer players, Journal of Human Kinetics, 42, pp. 51-61, (2014)","C. Sforza; Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, via Mangiagalli 31, 20133, Italy; email: chiarella.sforza@unimi.it","","Routledge","02640414","","JSSCE","26067339","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-84975509876" "Katis A.; Kellis E.","Katis, Athanasios (23135001400); Kellis, Eleftherios (6603815400)","23135001400; 6603815400","Three-dimensional kinematics and ground reaction forces during the instep and outstep soccer kicks in pubertal players","2010","Journal of Sports Sciences","28","11","","1233","1241","8","39","10.1080/02640414.2010.504781","https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957092131&doi=10.1080%2f02640414.2010.504781&partnerID=40&md5=5b2cf1d56e6a609d8f66b1d4c874c44f","Laboratory of Neuromechanics, Department of Physical Education and Sports Sciences of Serres, Aristotle University of Thessaloniki, Agios Ioannis, 62110 Serres, Greece","Katis A., Laboratory of Neuromechanics, Department of Physical Education and Sports Sciences of Serres, Aristotle University of Thessaloniki, Agios Ioannis, 62110 Serres, Greece; Kellis E., Laboratory of Neuromechanics, Department of Physical Education and Sports Sciences of Serres, Aristotle University of Thessaloniki, Agios Ioannis, 62110 Serres, Greece","The purpose of the present study was to compare the three-dimensional kinematics of the lower extremities and ground reaction forces between the instep kick and the kick with the outside area of the foot (outstep kick) in pubertal soccer players. Ten pubertal soccer players performed consecutive kicking trials in random order after a two-step angled approach with the instep and the outstep portion of the foot. Three-dimensional data and ground reaction forces were measured during kicking. Paired t-tests indicated significantly higher (P < 0.05) ball speeds and ball/foot speed ratios for the instep kick compared with the outstep kick. Non-significant differences in angular and linear sagittal plane kinematic parameters, temporal characteristics, and ground reaction forces between the instep and outstep soccer kicks were observed (P > 0.05). In contrast, analysis of variance indicated that the outstep kick displayed higher hip internal rotation and abduction, knee internal rotation, and ankle inversion than the instep kick (P < 0.05). Our results suggest that the instep kick is more powerful than the outstep kick and that different types of kick require different types of skill training. © 2010 Taylor & Francis.","Ball speed; Ground reaction forces; Instep kick; Kinematics; Outstep kick","Adolescent; Biomechanics; Humans; Lower Extremity; Movement; Puberty; Soccer; adolescent; article; biomechanics; clinical trial; controlled clinical trial; controlled study; human; leg; movement (physiology); physiology; puberty; randomized controlled trial; sport","Asai T., Carre M., Akatsuka T., Haake S., The curve kick of a football I: Impact with the foot, Sports Engineering, 5, pp. 183-192, (2002); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics, VIII-B, pp. 695-700, (1983); Barfield W., Effects of selected kinematic and kinetic variables on instep kicking with dominant and nondominant limbs, Journal of Human Movement Studies, 29, pp. 251-272, (1995); Carre M., Asai T., Akatsuka T., Haake S., The curve kick of a football II: Flight through the air, Sports Engineering, 5, pp. 193-200, (2002); de Proft E., Clarys J., Bollens E., Cabri J., Dufour W., Muscle activity in the soccer kick, Science and Football, pp. 434-440, (1988); Kawamoto R., Miyagi O., Ohashi J., Fukashiro S., Kinetic comparison of a side-foot soccer kick between experienced and inexperienced players, Sports Biomechanics, 6, pp. 187-198, (2007); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Science and Medicine, 6, pp. 154-165, (2007); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Medicine and Science In Sports and Exercise, 36, pp. 1017-1028, (2004); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (1998); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science In Sports and Exercise, 30, pp. 917-927, (1998); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 441-448, (1988); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science In Sports and Exercise, 34, pp. 2028-2036, (2002); Nunome H., Lake M., Georgakis A., Stergioulas L., Impact phase kinematics of instep kicking in soccer, Journal of Sports Sciences, 24, pp. 11-22, (2006); Opavsky P., An investigation of linear and angular kinematics of the leg during two types of soccer kick, Science and Football, pp. 456-459, (1988); Orloff H., Sumida B., Chow J., Habibi L., Fujino A., Kramer B., Ground reaction forces and kinematics of plant leg position during instep kicking in male and female collegiate soccer players, Sports Biomechanics, 7, pp. 238-247, (2008); Rodano R., Tavana R., Three dimensional analysis of the instep kick in professional soccer players, Science and Football, II, pp. 357-363, (1993); Tsaousidis N., Zatsiorsky V., Two types of ball-effector interaction and their relative contribution to soccer kicking, Human Movement Science, 15, pp. 861-876, (1996); Wang J.S., Griffin M., Kinematic analysis of the soccer curve ball shot, Strength and Conditioning, 2, pp. 54-57, (1997); Weineck J., Fußballtraining. Teil 1: Konditionstraining des Fussballspielers, (1997)","A. Katis; Laboratory of Neuromechanics, Department of Physical Education and Sports Sciences of Serres, Aristotle University of Thessaloniki, Agios Ioannis, 62110 Serres, Greece; email: akatis@phed-sr.auth.gr","","","1466447X","","JSSCE","20845213","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-77957092131" "Greska E.K.; Cortes N.; Van Lunen B.L.; Oñate J.A.","Greska, Eric K. (39961575800); Cortes, Nelson (23033673100); Van Lunen, Bonnie L. (6506227549); Oñate, James A. (7004831141)","39961575800; 23033673100; 6506227549; 7004831141","A feedback inclusive neuromuscular training program alters frontal plane kinematics","2012","Journal of Strength and Conditioning Research","26","6","","1609","1619","10","33","10.1519/JSC.0b013e318234ebfb","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863693372&doi=10.1519%2fJSC.0b013e318234ebfb&partnerID=40&md5=4e5bc9ec18715c0fc5967c99f96d1e3b","Department of Human Movement Sciences, Old Dominion University, Norfolk, VA, United States; School of Recreation Health and Tourism, George Mason University, Fairfax, VA, United States; School of Allied Medical Professions, Ohio State University, Columbus, OH, United States","Greska E.K., Department of Human Movement Sciences, Old Dominion University, Norfolk, VA, United States; Cortes N., School of Recreation Health and Tourism, George Mason University, Fairfax, VA, United States; Van Lunen B.L., Department of Human Movement Sciences, Old Dominion University, Norfolk, VA, United States; Oñate J.A., School of Allied Medical Professions, Ohio State University, Columbus, OH, United States","Anterior cruciate ligament (ACL) neuromuscular training programs have demonstrated beneficial effects in reducing ACL injuries, yet further evaluation of their effects on biomechanical measures across a sports team season is required to elucidate the specific factors that are modifiable. The purpose of this study was to evaluate the effects of a 10-week off-season neuromuscular training program on lower extremity kinematics. Twelve Division I female soccer players (age: 19.2 ± 0.8 years, height: 1.67 ± 0.1 m, weight: 60.2 6 6.5 kg) performed unanticipated dynamic trials of a running stop-jump task pretraining and posttraining. Data collection was performed using an 8-camera Vicon system (Los Angeles, CA, USA) and 2 Bertec (Columbus, OH, USA) force plates. The 10-week training program consisted of resistance training 2 times per week and field training, consisting of plyometric, agility, and speed drills, 2 times per week. Repeated measures analyses of variance (ANOVAs) were used to assess the differences between pretraining and posttraining kinetics and kinematics of the hip, knee, and ankle at initial contact (IC), peak knee flexion (PKF), and peak stance. Repeated measures ANOVAs were also used to assess isometric strength differences pretraining and posttraining. The alpha level was set at 0.05 a priori. The training program demonstrated significant increases in left hip extension, left and right hip flexion, and right hip adduction isometric strength. At IC, knee abduction angle moved from an abducted to an adducted position (21.48 6 3.65° to 1.46 ± 3.86°, p = 0.007), and hip abduction angle increased (-6.05 ± 4.63° to -10.34 ± 6.83°, p = 0.007). Hip abduction angle at PKF increased (-2.23 ± 3.40° to 6.01 ± 3.82°, p = 0.002). The maximum knee extension moment achieved at peak stance increased from pretraining to posttraining (2.02 ± 0.32 to 2.38 ± 0.75 N m kg-1, p = 0.027). The neuromuscular training program demonstrated a potential positive effect in altering mechanics that influence the risk of incurring an ACL injury. © 2012 National Strength and Conditioning Association.","Anterior cruciate ligament; Augmented feedback; Biomechanics; Injury prevention; Performance training","Analysis of Variance; Anterior Cruciate Ligament; Biomechanics; Exercise; Feedback; Female; Humans; Knee Injuries; Lower Extremity; Neuromuscular Junction; Physical Education and Training; Range of Motion, Articular; Resistance Training; Soccer; Task Performance and Analysis; Young Adult; adult; analysis of variance; anterior cruciate ligament; article; biomechanics; comparative study; evaluation; exercise; feedback system; female; human; injury; joint characteristics and functions; knee injury; leg; methodology; neuromuscular synapse; physical education; physiology; resistance training; sport; task performance","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A 13-year review, Am J Sports Med, 33, pp. 524-530, (2005); Chappell J.D., Creighton R.A., Giuliani C., Yu B., Garrett W.E., Kinematics and electromyography of landing preparation in vertical stop-jump: Risks for noncontact anterior cruciate ligament injury, Am J Sports Med, 35, pp. 235-241, (2007); Chappell J.D., Limpisvasti O., Effect of a neuromuscular training program on the kinetics and kinematics of jumping tasks, Am J Sports Med, 36, pp. 1081-1086, (2008); Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am J Sports Med, 30, pp. 261-267, (2002); Cochrane J.L., Lloyd D.G., Besier T.F., Elliott B.C., Doyle T.L.A., Ackland T.R., Training affects knee kinematics and kinetics in cutting maneuvers in sport, Med Sci Sports Exerc, 42, pp. 1535-1544, (2010); Fernandez W.G., Yard E.E., Comstock R.D., Epidemiology of lower extremity injuries among U.S. high school athletes, Acad Emerg Med, 14, pp. 641-645, (2007); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Med Sci Sports Exerc, 37, pp. 124-129, (2005); Gilchrist J., Mandelbaum B.R., Melancon H., Ryan G.W., Silvers H.J., Griffin L.Y., Watanabe D.S., Dick R.W., Dvorak J., A randomized controlled trial to prevent noncontact anterior cruciate ligament injury in female collegiate soccer players, Am J Sports Med, 36, pp. 1476-1483, (2008); Griffin L.Y., Agel J., Albohm M.J., Arendt E.A., Dick R.W., Garrett W.E., Garrick J.G., Hewett T.E., Huston L., Ireland M.L., Johnson R.J., Kibler W.B., Lephart S., Lewis J.L., Lindenfeld T.N., Mandelbaum B.R., Marchak P., Teitz C.C., Wojtys E.M., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, J Am Acad Orthop Surg, 8, pp. 141-150, (2000); Grindstaff T.L., Hammill R.R., Tuzson A.E., Hertel J., Neuromuscular control training programs and noncontact anterior cruciate ligament injury rates in female athletes: A numbers-neededto-treat analysis, J Athl Train, 41, pp. 450-456, (2006); Herman D.C., Onate J.A., Weinhold P.S., Guskiewicz K.M., Garrett W.E., Yu B., Padua D.A., The effects of feedback with and without strength training on lower extremity biomechanics, Am J Sports Med, 37, pp. 1301-1308, (2009); Herman D.C., Weinhold P.S., Guskiewicz K.M., Garrett W.E., Yu B., Padua D.A., The effects of strength training on the lower extremity biomechanics of female recreational athletes during a stop-jump task, Am J Sports Med, 36, pp. 733-740, (2008); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes. A prospective study, Am J Sports Med, 27, pp. 699-706, (1999); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Van Den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Hewett T.E., Shultz S.J., Griffin L.Y., Understanding and Preventing Noncontact ACL Injuries, (2007); Hootman J.M., Dick R., Agel J., Epidemiology of collegiate injuries for 15 sports: Summary and recommendations for injury prevention initiatives, J Athl Train, 42, pp. 311-319, (2007); Jacobs C.A., Uhl T.L., Mattacola C.G., Shapiro R., Rayens W.S., Hip abductor function and lower extremity landing kinematics: Sex differences, J Athl Train, 42, pp. 76-83, (2007); Kernozek T.W., Torry M.R., Van Hoof H., Cowley H., Tanner S., Gender differences in frontal and sagittal plane biomechanics during drop landings, Med Sci Sports Exerc, 37, pp. 1003-1012, (2005); Knapik J.J., Bauman C.L., Jones B.H., Harris J.M., Vaughan L., Preseason strength and flexibility imbalances associated with athletic injuries in female collegiate athletes, Am J Sports Med, 19, pp. 76-81, (1991); Kollock R.O., Onate J.A., Van Lunen B., The reliability of portable fixed dynamometry during hip and knee strength assessments, J Athl Train, 45, pp. 349-356, (2010); Leetun D.T., Ireland M.L., Willson J.D., Ballantyne B.T., Davis I.M., Core stability measures as risk factors for lower extremity injury in athletes, Med Sci Sports Exerc, 36, pp. 926-934, (2004); Lephart S.M., Abt J.P., Ferris C.M., Sell T.C., Nagai T., Myers J.B., Irrgang J.J., Neuromuscular and biomechanical characteristic changes in high school athletes: A plyometric versus basic resistance program, Br J Sports Med, 39, pp. 932-938, (2005); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Knarr J.F., Thomas S.D., Griffin L.Y., Kirkendall D.T., Garrett W., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes: 2-year followup, Am J Sports Med, 33, pp. 1003-1010, (2005); McLean S.G., Lipfert S.W., Van Den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, pp. 1008-1016, (2004); McNair P.J., Prapavessis H., Callender K., Decreasing landing forces: Effect of instruction, Br J Sports Med, 34, pp. 293-296, (2000); Mizner R.L., Kawaguchi J.K., Chmielewski T.L., Muscle strength in the lower extremity does not predict postinstruction improvements in the landing patterns of female athletes, J Orthopaed Sports Phys Ther, 38, pp. 353-361, (2008); Mountcastle S.B., Posner M., Kragh J.F., Taylor D.C., Gender differences in anterior cruciate ligament injury vary with activity: Epidemiology of anterior cruciate ligament injuries in a young, athletic population, Am J Sports Med, 35, pp. 1635-1642, (2007); Myer G.D., Ford K.R., Hewett T.E., Methodological approaches and rationale for training to prevent anterior cruciate ligament injuries in female athletes, Scand J Med Sci Sports, 14, pp. 275-285, (2004); Myer G.D., Ford K.R., McLean S.G., Hewett T.E., The effects of plyometric versus dynamic stabilization and balance training on lower extremity biomechanics, Am J Sports Med, 34, pp. 445-455, (2006); Myer G.D., Ford K.R., Palumbo J.P., Hewett T.E., Neuromuscular training improves performance and lower-extremity biomechanics in female athletes, J Strength Cond Res, 19, pp. 51-60, (2005); Onate J.A., Guskiewicz K.M., Marshall S.W., Giuliani C., Yu B., Garrett W.E., Instruction of jump-landing technique using videotape feedback: Altering lower extremity motion patterns, Am J Sports Med, 33, pp. 831-842, (2005); Pollard C.D., Davis I.M., Hamill J., Influence of gender on hip and knee mechanics during a randomly cued cutting maneuver, Clin Biomech (Bristol, Avon), 19, pp. 1022-1031, (2004); Renstrom P., Ljungqvist A., Arendt E., Beynnon B., Fukubayashi T., Garrett W., Georgoulis T., Hewett T.E., Johnson R., Krosshaug T., Mandelbaum B., Micheli L., Myklebust G., Roos E., Roos H., Schamasch P., Shultz S., Werner S., Wojtys E., Engebretsen L., Non-contact ACL injuries in female athletes: An International Olympic Committee current concepts statement, Br J Sports Med, 42, pp. 394-412, (2008); Schwartz M.H., Rozumalski A., A new method for estimating joint parameters from motion data, J Biomech, 38, pp. 107-116, (2005); Sell T.C., Ferris C.M., Abt J.P., Tsai Y.-S., Myers J.B., Fu F.H., Lephart S.M., Predictors of proximal tibia anterior shear force during a vertical stop-jump, J Orthop Res, 25, pp. 1589-1597, (2007); Shultz S., Nguyen A., Levine B., The relationship between lower extremity alignment characteristics and anterior knee joint laxity, Sports Health: A Multidisciplinary Appr, 1, (2009); Shultz S.J., Schmitz R.J., Nguyen A.-D., Research retreat IV: ACL injuries-The gender bias: April 3-5, 2008 Greensboro, NC, J Athl Training, 43, pp. 530-531, (2008); Silvers H.J., Mandelbaum B.R., Prevention of anterior cruciate ligament injury in the female athlete, Br J Sports Med, 41, SUPPL. 1, (2007); Wallace B.J., Kernozek T.W., Mikat R.P., Wright G.A., Simons S.Z., Wallace K.L., A comparison between back squat exercise and vertical jump kinematics: Implications for determining anterior cruciate ligament injury risk, J Strength Cond Res/Natl Strength Cond Assoc, 22, pp. 1249-1258, (2008); Willson J.D., Ireland M.L., Davis I., Core strength and lower extremity alignment during single leg squats, Med Sci Sports Exerc, 38, pp. 945-952, (2006); Yu B., Lin C.-F., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clin Biomech (Bristol, Avon), 21, pp. 297-305, (2006)","E.K. Greska; Department of Human Movement Sciences, Old Dominion University, Norfolk, VA, United States; email: egreska@odu.edu","","","10648011","","","21921815","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-84863693372" "Nagahara R.; Botter A.; Rejc E.; Koido M.; Shimizu T.; Samozino P.; Morin J.-B.","Nagahara, Ryu (56047877300); Botter, Alberto (23110458900); Rejc, Enrico (18537847200); Koido, Masaaki (57190752363); Shimizu, Takeshi (57193336689); Samozino, Pierre (14024773800); Morin, Jean-Benoit (55917329600)","56047877300; 23110458900; 18537847200; 57190752363; 57193336689; 14024773800; 55917329600","Concurrent validity of GPS for deriving mechanical properties of sprint acceleration","2017","International Journal of Sports Physiology and Performance","12","1","","129","132","3","34","10.1123/ijspp.2015-0566","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85013056981&doi=10.1123%2fijspp.2015-0566&partnerID=40&md5=deeb9c3861a3e09eaaea5d2134aff9fb","Sports Performance Laboratory, National Institute of Fitness and Sports in Kanoya, Kanoya, Japan; Department of Medical and Biological Sciences, University of Udine, Udine, Italy; Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, KY, United States; Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Japan; Sports Research and Development Core, University of Tsukuba, Tsukuba, Japan; Laboratory of Exercise Physiology (EA4338), University of Savoy Mont Blanc, Savoy, France; Laboratory of Human Motricity, Education Sport and Health, University of Nice Sophia Antipolis, Nice, France","Nagahara R., Sports Performance Laboratory, National Institute of Fitness and Sports in Kanoya, Kanoya, Japan; Botter A., Department of Medical and Biological Sciences, University of Udine, Udine, Italy; Rejc E., Department of Medical and Biological Sciences, University of Udine, Udine, Italy, Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, KY, United States; Koido M., Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Japan; Shimizu T., Sports Research and Development Core, University of Tsukuba, Tsukuba, Japan; Samozino P., Laboratory of Exercise Physiology (EA4338), University of Savoy Mont Blanc, Savoy, France; Morin J.-B., Laboratory of Human Motricity, Education Sport and Health, University of Nice Sophia Antipolis, Nice, France","Purpose: The purpose of this study was to test the concurrent validity of data from two different global positioning system (GPS) units for obtaining mechanical properties during sprint acceleration using a field method recently validated by Samozino et al. Methods: Thirty-two athletes performed maximal straight-line sprints, and their running speed was simultaneously measured by GPS units (sampling rate: 20 Hz or 5 Hz) and either a radar or laser device (devices taken as references). Lower limb mechanical properties of sprint acceleration (theoretical maximal force, F0; theoretical maximal speed, V0; maximal power, Pmax) were derived from a modeling of the speed-time curves using an exponential function in both measurements. Comparisons of mechanical properties from 20 Hz and 5 Hz GPS units with those from reference devices were performed for 80 and 62 trials, respectively. Results: The percentage bias showed a wide range of over or underestimation for both systems (-7.9-9.7% and -5.1-2.9% for 20 Hz and 5 Hz GPS), while the ranges of its 90% confidence limits for 20 Hz GPS were markedly smaller than those for 5 Hz GPS. These results were supported by the correlation analyses. Conclusions: Overall, the concurrent validity for all variables derived from 20 Hz GPS measurements was better than that obtained from the 5 Hz GPS units. However, in the current state of GPS devices accuracy for speed-time measurements over a maximal sprint acceleration, we recommend that radar, laser devices and timing gates remain the reference methods for implementing Samozino et al.'s computations. © 2016, Human Kinetics Publishers Inc. All rights reserved.","Force; Laser; Power; Running; Velocity","Acceleration; Biomechanical Phenomena; Football; Geographic Information Systems; Humans; Lower Extremity; Male; Reproducibility of Results; Running; Soccer; Task Performance and Analysis; Young Adult; acceleration; biomechanics; football; geographic information system; human; lower limb; male; physiology; reproducibility; running; soccer; task performance; young adult","Aughey R.J., Applications of GPS technologies to field sports, Int J Sports Physiol Perform, 6, pp. 295-310, (2011); Barbero-Alvarez J.C., Coutts A., Granda J., Barbero-Alvarez V., Castagna C., The validity and reliability of a global positioning satellite system device to assess speed and repeated sprint ability (RSA) in athletes, J Sci Med Sport, 13, pp. 232-235, (2010); Jennings D., Cormack S., Coutts A.J., Boyd L., Aughey R.J., The validity and reliability of GPS units for measuring distance in team sport specific running patterns, Int J Sports Physiol Perform, 5, pp. 328-341, (2010); Rampinini E., Alberti G., Fiorenza M., Riggio M., Sassi R., Borges T.O., Coutts A.J., Accuracy of GPS Devices for Measuring High-intensity Running in Field-based Team Sports, Int J Sports Med, 36, pp. 49-53, (2015); Varley M.C., Fairweather I.H., Aughey R.J., Validity and reliability of GPS for measuring instantaneous velocity during acceleration, deceleration, and constant motion, J Sports Sci, 30, pp. 121-127, (2012); Buchheit M., Al H.H., Simpson B.M., Palazzi D., Bourdon P.C., Di S.V., Mendez-Villanueva A., Monitoring accelerations with GPS in football: Time to slow down?, Int J Sports Physiol Perform, 9, pp. 442-445, (2014); Haugen T., Tonnessen E., Hisdal J., Seiler S., The role and development of sprinting speed in soccer, Int J Sports Physiol Perform, 9, pp. 432-441, (2014); Samozino P., Rabita G., Dorel S., Slawinski J., Peyrot N., Saez De Villarreal E., Morin J.B., A simple method for measuring power, force, velocity properties, and mechanical effectiveness in sprint running, Scand J Med Sci Sports; Buchheit M., Samozino P., Glynn J.A., Michael B.S., Al H.H., Mendez-Villanueva A., Morin J.B., Mechanical determinants of acceleration and maximal sprinting speed in highly trained young soccer players, J Sports Sci, 32, pp. 1906-1913, (2014); Di Prampero P.E., Botter A., Osgnach C., The energy cost of sprint running and the role of metabolic power in setting top performances, Eur J Appl Physiol, 115, pp. 451-469, (2015); Haugen T., Buchheit M., Sprint Running Performance Monitoring: Methodological and Practical Considerations, Sports Med; Hopkins W.G., Measures of reliability in sports medicine and science, Sports Med, 30, pp. 1-15, (2000)","R. Nagahara; Sports Performance Laboratory, National Institute of Fitness and Sports in Kanoya, Kanoya, 1 Shiromizu-cho, 891-2393, Japan; email: nagahara@nifs-k.ac.jp","","Human Kinetics Publishers Inc.","15550265","","","27002693","English","Int. J. Sport Physiol. Perform.","Article","Final","","Scopus","2-s2.0-85013056981" "Kellis E.; Katis A.","Kellis, E. (6603815400); Katis, A. (23135001400)","6603815400; 23135001400","The relationship between isokinetic knee extension and flexion strength with soccer kick kinematics: An electromyographic evaluation","2007","Journal of Sports Medicine and Physical Fitness","47","4","","385","394","9","28","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-38849097114&partnerID=40&md5=d7d76a54f7ff318ed180586eda6e864d","Laboratory of Neuromuscular Control and Therapeutic Exercise, Department of Physical Education and Sports Sciences, Serres Aristotle University of Thessaloniki, Serres, Greece; Thiseos 9, Evosmos, 56224 Thessaloniki, Greece","Kellis E., Laboratory of Neuromuscular Control and Therapeutic Exercise, Department of Physical Education and Sports Sciences, Serres Aristotle University of Thessaloniki, Serres, Greece, Thiseos 9, Evosmos, 56224 Thessaloniki, Greece; Katis A., Laboratory of Neuromuscular Control and Therapeutic Exercise, Department of Physical Education and Sports Sciences, Serres Aristotle University of Thessaloniki, Serres, Greece","Aim. The purpose of this study was to investigate the relationship between isokinetic strength knee testing and soccer kick kinematics using electromyography (EMG). Methods. Thirteen pubertal soccer players (age: 143±0.4 years) performed maximum instep soccer kicks, while knee angular position of the swinging leg was recorded using a twin-axis electrogoniometer. Bipolar surface EMG activity of the vastus medialis, vastus lateralis and biceps femoris (BF) muscles was recorded. The subjects also performed maximum knee extension and flexion efforts at concentric angular velocities of 1.04, 3.14 and 5.23 rad·s-1 and eccentric angular velocities of 1.04 and 3.14 rad·s-1. Results. The correlation coefficients between isokinetic moments and knee angular velocity values during the kick ranged from 0.609 to 0.898 for concentric moments and from 0.431 to 0.612 for eccentric moments. Agonist EMG values during isokinetic tests ranged from 63.17±19.9% to 128.7±34.9% maximum voluntary contraction (MVC). Antagonist EMG levels ranged from 9.76±6.12% to 36.91±22.81% MVC. The corresponding EMG values during the soccer kick ranged from 12.78±6.8% to 122.34±61.5% MVC and increased as the foot approached the ball. Conclusion. Isokinetic tests at intermediate and fast angular velocities are adequate for monitoring strength training programs in soccer. However, muscle activation patterns differ between the two movements, especially those of the BF muscle.","Adolescence; Electromyography; Psychomotor performance; Soccer","Adolescent; Biomechanics; Electromyography; Ergometry; Greece; Humans; Knee Joint; Muscle Strength; Psychomotor Performance; Soccer; adolescent; article; biomechanics; electromyography; ergometry; Greece; human; knee; muscle strength; physiology; psychomotor performance; sport","Kellis E., Baltzopoulos V., Isokinetic eccentric exercise, Sports Med, 19, pp. 202-222, (1995); Baltzopoulos V., Brodie D.A., Isokinetic dynamometry: Applications and limitations, Sports Med, 8, pp. 111-116, (1989); Taina F., Grehaigne J., Cometti G., The influence of maximal strength training of lower limbs of soccer players on their physical and kick performances, Science and soccer II, pp. 98-103, (1993); Dutta P., Subramanium S., Effect of six weeks of isokinetic strength training combined with skill training on soccer kicking performance, Science and soccer IV, pp. 334-340, (2002); 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Kellis E., Kellis S., Gerodimos V., Manou V., Reliability of isokinetic concentric and eccentric muscle strength in young soccer players, Ped Exerc Sci, 11, pp. 218-228, (1999); Winter D.A., Biomechanics and motor control of human movement, (1990); Kellis E., Baltzopoulos V., Gravitational moment correction in isokinetic dynamometry using anthropometric data, Med Sci Sports Exerc, 28, pp. 900-907, (1996); Mohtadi N.G.H., Kiefer G.N., Tedford K., Watters S., Concentric and eccentric quadriceps torque in pre-adolescent males, Can J Sports Sci, 15, pp. 240-243, (1990); Calmeis P., Van De Borne I., Nellen M., Domenach M., Minaire P., Drost M., A pilot study of knee isokinetic strength in young, highly trained, females gymnasts, Isokin Exerc Sci, 5, pp. 69-74, (1995); Seger J., Thorstensson A., Muscle strength and myoelectric activity in prepubertal and adult males and females, Eur J Appl Phys, 69, pp. 81-87, (1994); Kellis E., Baltzopoulos V., The effect of antagonist moment on the resultant joint moment during concentric and eccentric isokinetic efforts of the knee extensors, Eur J Appl Phys, 76, pp. 253-259, (1997); 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Besier T., Lloyd D., Ackland T., Muscle activation strategies at the knee during running and cutting maneuvers, Med Sci Sports Exerc, 35, pp. 119-127, (2003); Bollens E., De Proft E., Clarys J., The accuracy and muscle monitoring in soccer kicking, Biomechanics X-A, pp. 283-288, (1987); Kellis E., Katis A., Vrabas I.S., Effects of an intermittent exercise fatigue protocol on biomechanics of soccer kick performance, Scand J Med Sci Sports, 16, pp. 334-344, (2006); Lees A., Biomechanics applied to soccer skills, Science and soccer, pp. 123-133, (1996); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med Sci Sports Exerc, 30, pp. 917-927, (1998); Dorge H., Bull-Andersen T., Sorensen H., Simonsen E., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, J Sports Sci, 20, pp. 293-299, (2002)","E. Kellis; Thiseos 9, Evosmos, 56224 Thessaloniki, Greece; email: ekellis@phed-sr.auth.gr","","","00224707","","JMPFA","18091676","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-38849097114" "Barbieri F.A.; Gobbi L.T.B.; Santiago P.R.P.; Cunha S.A.","Barbieri, Fabio A. (35798078800); Gobbi, Lilian T.B. (18233668400); Santiago, Paulo R.P. (36098423400); Cunha, Sergio A. (16416879600)","35798078800; 18233668400; 36098423400; 16416879600","Performance comparisons of the kicking of stationary and rolling balls in a futsal context","2010","Sports Biomechanics","9","1","","1","15","14","26","10.1080/14763141003690211","https://www.scopus.com/inward/record.uri?eid=2-s2.0-77951540335&doi=10.1080%2f14763141003690211&partnerID=40&md5=af454c347448876f8bf0c12d487f543e","UNESP - Posture and Gait Studies Lab, São Paulo State University at Rio Claro SP, Brazil; São Paulo State University, UNESP-IB-Rio Claro Posture and Gait Studies Lab, Physical Education Department, 13.506-900, Rio Claro/São Paulo, Avenida 24-A, 1515-Bela Vista-CEP, Brazil; UFG-Federal University of Goiania GO, Brazil; UNICAMP-Biomechanical Instrumentation Lab, State University of Campinas SP, Campinas, Brazil","Barbieri F.A., UNESP - Posture and Gait Studies Lab, São Paulo State University at Rio Claro SP, Brazil, São Paulo State University, UNESP-IB-Rio Claro Posture and Gait Studies Lab, Physical Education Department, 13.506-900, Rio Claro/São Paulo, Avenida 24-A, 1515-Bela Vista-CEP, Brazil; Gobbi L.T.B., UNESP - Posture and Gait Studies Lab, São Paulo State University at Rio Claro SP, Brazil; Santiago P.R.P., UFG-Federal University of Goiania GO, Brazil; Cunha S.A., UNICAMP-Biomechanical Instrumentation Lab, State University of Campinas SP, Campinas, Brazil","Angular kinematics of the hip, knee, and ankle joints, as well as ball velocity and accuracy for stationary and rolling balls were compared in a futsal (Five-a-Side Indoor soccer) context. Ten futsal athletes performed five kicks each on stationary and rolling futsal balls. Six digital cameras (120 Hz) recorded the kicks. For both kick types, angles for hip, knee, and ankle joints were calculated using Euler angle conventions. Angular velocity, ball velocity, foot linear velocity, relative velocity, and accuracy also were analyzed. The kicking of both stationary and rolling balls showed similarities for ball velocity (24.2 ± 2.2 m/s and 23.8 ± 2.7 m/s, respectively), foot velocity (17.6 ± 1.8 m/s and 17.2 ± 2.2 m/s, respectively), and accuracy (26% and 24% target hits, respectively). We observed few differences in angular kinematics and angular joint velocities between kick types. Elite players can make online adjustments in the preparatory phase so that kicking a rolling ball is almost exactly like kicking a stationary ball. © 2010 Taylor & Francis.","Angular kinematics; Futsal; Kicking a rolling ball; Performance","Ankle Joint; Athletes; Athletic Performance; Biomechanics; Hip Joint; Humans; Knee Joint; Photography; Soccer; Young Adult; adult; ankle; article; athlete; athletic performance; biomechanics; hip; human; knee; photography; physiology; sport","Abdel-Aziz Y.I., Karara H.M., Direct linear transformation from comparator coordinates into object space coordinates in close-range photogrammetry, Proceedings of The ASP/UI Symposium On Close-Range Photogrammetry, pp. 1-18, (1971); Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, Journal of Sports Science, 24, pp. 951-960, (2006); Asai T., Nunome H., Kamata Y., Sakashita R., Ball impact analysis in football using fem foot model, Proceedings of XXth ISB Congress, (2005); Barbieri F.A., Santiago P.R.P., Gobbi L.T.B., Cunha S.A., Dominant and non-dominant support limb kinematics variability during futsal kick, Portuguese Journal Sport Science, 8, pp. 68-76, (2008); Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, Journal of Sports Science and Medicine, 1, pp. 72-79, (2002); Bracken M.B., Holford T.R., Neurological and functional status 1 year after acute spinal cord injury: Estimates of functional recovery in National Acute Spinal Cord Injury Study II from results modeled in National Acute Spinal Cord Injury Study III, Journal of Neurosurgery, 96, pp. 259-266, (2002); Cappozzo A., Catani F., Croce U.D., Leardini A., Position and orientation in-space of bones during movement - anatomical frame definition and determination, Clinical Biomechanics, 10, pp. 171-178, (1995); Chao E.Y.S., Justification of triaxial goniometer for the measurement of joint rotation, Journal of Biomechanics, 13, pp. 989-1006, (1980); Cleveland W.S., Robust locally weighted regression and smoothing scatterplots, Journal of American Statistical Association, 74, pp. 829-836, (1979); Coren S., The lateral preference inventory for measurement of handedness, footedness, eyedness and earedness: Norms for young adults, Bulletin of The Psychonomic Society, 1, pp. 1-3, (1993); Cunha S.A., Lima Filho E.C., Methodology for the smooth of biomechanics data for functions distribution free, Brazilian Journal of Biomechanics, 1, pp. 23-28, (2003); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, pp. 293-299, (2002); Egan C.D., Verheul M.H., Savelsbergh G.J., Effects of experience on the coordination of internally and externally timed soccer kicks, Journal of Motor Behavior, 39, pp. 423-432, (2007); Ferreira P.N., Characteristic of Goal Scoring In Futsal. Instituto Superior Da Maia, Maia, (1999); Figueroa P.J., Leite N.J., Barros R.M.L., A flexible software for tracking of markers used in human motion analysis, Computer Methods and Programs In Biomedicine, 72, pp. 155-165, (2003); Greenwood D.T., Principles of Dynamics, (1987); Levanon J., Dapena J., Comparison of the kinematics of the full-instep kick and pass kicks in soccer, Medicine and Science In Sports and Exercise, 30, pp. 917-927, (1998); Macgill R., Tukey J.W., Larsen W.A., Variations of box plots, The American Statistician, 32, pp. 12-16, (1978); Mohagheghi A.A., Moraes R., Patla A.E., The effects of distant and on-line visual information on the control of approach phase and step over an obstacle during locomotion, Experimental Brain Research, 155, pp. 459-468, (2004); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science In Sports and Exercise, 34, pp. 2028-2036, (2002); Patla A.E., How is human gait controlled by vision?, Ecological Psychology, 10, pp. 287-302, (1998); Patla A.E., Strategies for dynamic stability during adaptive human locomotion, Engineering In Medicine and Biology Magazine, 22, pp. 48-52, (2003); Putnam C.A., A segmental interaction analysis of proximal-to-distal sequential segment motion patterns, Medicine and Science In Sports and Exercise, 23, pp. 130-144, (1991); Rosenbaum D.A., Human Motor Control, (1991); Savelsbergh G.J., Williams A.M., van der Kamp J., Ward P.J., Visual search, anticipation and expertise in soccer goalkeepers, Journal of Sports Sciences, 20, pp. 279-287, (2002); Schmidt R.A., Wrisberg C.A., Motor learning and performance, A Problem-based Approach, (2000); Shumway-Cook A., Woollacott M.H., Motor Control: Theory and Practical Applications, (1995); Tol J.L., Slim E., van Soest A.J., van Dijk C.D., The relationship of the kicking action in soccer and anterior ankle impingement syndrome: A biomechanical analysis, The American Journal of Sports Medicine, 30, pp. 45-50, (2002); Winter D.A., Biomechanics and Motor Control of Human Movement, (1990); Zatsiorsky V.M., Kinematics of Human Motion, (1998)","L. T. B. Gobbi; São Paulo State University, UNESP-IB-Rio Claro Posture and Gait Studies Lab, Physical Education Department, 13.506-900, Rio Claro/São Paulo, Avenida 24-A, 1515-Bela Vista-CEP, Brazil; email: ltbgobbi@rc.unesp.br","","","17526116","","","20446635","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-77951540335" "Lyle M.A.; Valero-Cuevas F.J.; Gregor R.J.; Powers C.M.","Lyle, Mark A. (52664113100); Valero-Cuevas, Francisco J. (6603776700); Gregor, Robert J. (7005991452); Powers, Christopher M. (7103284208)","52664113100; 6603776700; 7005991452; 7103284208","Control of dynamic foot-ground interactions in male and female soccer athletes: Females exhibit reduced dexterity and higher limb stiffness during landing","2014","Journal of Biomechanics","47","2","","512","517","5","34","10.1016/j.jbiomech.2013.10.038","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84891835712&doi=10.1016%2fj.jbiomech.2013.10.038&partnerID=40&md5=d4f1e386a01cc4eed0e31b8117538c17","Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States; Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA, United States; School of Applied Physiology, Georgia Institute of Technology, Atlanta, GA 30332-0356, United States","Lyle M.A., Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States, School of Applied Physiology, Georgia Institute of Technology, Atlanta, GA 30332-0356, United States; Valero-Cuevas F.J., Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States, Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA, United States; Gregor R.J., Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States, School of Applied Physiology, Georgia Institute of Technology, Atlanta, GA 30332-0356, United States; Powers C.M., Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States","Controlling dynamic interactions between the lower limb and ground is important for skilled locomotion and may influence injury risk in athletes. It is well known that female athletes sustain anterior cruciate ligament (ACL) tears at higher rates than male athletes, and exhibit lower extremity biomechanics thought to increase injury risk during sport maneuvers. The purpose of this study was to examine whether lower extremity dexterity (LED) - the ability to dynamically control endpoint force magnitude and direction as quantified by compressing an unstable spring with the lower limb at submaximal forces - is a potential contributing factor to the ""at-risk"" movement behavior exhibited by female athletes. We tested this hypothesis by comparing LED-test performance and single-limb drop jump biomechanics between 14 female and 14 male high school soccer players. We found that female athletes exhibited reduced LED-test performance (p=0.001) and higher limb stiffness during landing (p=0.008) calculated on average within 51. ms of foot contact. Females also exhibited higher coactivation at the ankle (p=0.001) and knee (p=0.02) before landing. No sex differences in sagittal plane joint angles and center of mass velocity at foot contact were observed. Collectively, our results raise the possibility that the higher leg stiffness observed in females during landing is an anticipatory behavior due in part to reduced lower extremity dexterity. The reduced lower extremity dexterity and compensatory stiffening strategy may contribute to the heightened risk of ACL injury in this population. © 2013 Elsevier Ltd.","ACL injury; Leg stiffness; Lower extremity control; Sensorimotor function; Sex difference","Adolescent; Anterior Cruciate Ligament; Athletes; Elasticity; Female; Humans; Knee Injuries; Knee Joint; Locomotion; Lower Extremity; Male; Movement; Sex Characteristics; Sex Factors; Soccer; Biped locomotion; SportS; Stiffness; ACL injury; Leg stiffness; Lower extremity control; Sensorimotor function; Sex difference; ACL injury; Anterior cruciate ligament; Contributing factor; Dynamic interaction; Foot-ground interaction; Leg stiffness; Lower extremity; Sex difference; adolescent; adult; article; athlete; biomechanics; female; ground reaction force; human; leg movement; lower extremity dexterity; male; motor control; musculoskeletal system parameters; priority journal; sex difference; task performance; Landing","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: a 13-year review, Am. 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Ther., 38, pp. 353-361, (2008); Moritz C.T., Farley C.T., Passive dynamics change leg mechanics for an unexpected surface during human hopping, J. Appl. Physiol., 97, pp. 1313-1322, (2004); Mosier K., Lau C., Wang Y., Venkadesan M., Valero-Cuevas F.J., Controlling instabilities in manipulation requires specific cortical-striatal-cerebellar networks, J. Neurophysiol., 105, pp. 1295-1305, (2011); Mujika I., Santisteban J., Impellizzeri F.M., Castagna C., Fitness determinants of success in men's and women's football, J. Sports Sci., 27, pp. 107-114, (2009); Olsen O.E., Myklebust G., Engebretsen L., Holme I., Bahr R., Exercises to prevent lower limb injuries in youth sports: cluster randomised controlled trial, Br. Med. J., 330, pp. 449-455, (2005); Padua D.A., Carcia C.R., Arnold B.L., Granata K.P., Gender differences in leg stiffness and stiffness recruitment strategy during two-legged hopping, J. Motor Behav., 37, pp. 111-125, (2005); Pauole K., Madole K., Garhammer J., Lacourse M., Rozenek R., Reliability and validity of the t-test as a measure of agility, leg power, and leg speed in college-aged men and women, J. Strength Conditioning Res., 14, pp. 443-450, (2000); Perreault E.J., Chen K., Trumbower R.D., Lewis G., Interactions with compliant loads alter stretch reflex gains but not intermuscular coordination, J. Neurophysiol., 99, pp. 2101-2113, (2008); Pollard C.D., Sigward S.M., Powers C.M., Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments, Clin. Biomech., 25, pp. 142-146, (2010); Potthast W., Bruggemann G.P., Lundberg A., Arndt A., The influences of impact interface, muscle activity, and knee angle on impact forces and tibial and femoral accelerations occurring after external impacts, J. Appl. Biomech., 26, pp. 1-9, (2010); Prochazka A., Schofield P., Westerman R.A., Ziccone S.P., Reflexes in cat ankle muscles after landing from falls, J. Physiol., 272, pp. 705-719, (1977); Ranavolo A., Don R., Cacchio A., Serrao M., Paoloni M., Mangone M., Santilli V., Comparison between kinematic and kinetic methods for computing the vertical displacement of the center of mass during human hopping at different frequencies, J. Appl. Physiol., 24, pp. 271-279, (2008); Rudolph K.S., Axe M.J., Snyder-Mackler L., Dynamic stability after ACL injury: who can hopα, Knee Surg. Sports Traumatol. Arthrosc., 8, pp. 262-269, (2000); Santello M., Review of motor control mechanisms underlying impact absorption from falls, Gait Posture, 21, pp. 85-94, (2005); Schmitt L.C., Rudolph K.S., Muscle stabilization strategies in people with medial knee osteoarthritis: the effect of instability, J. Orthop. Res., 26, pp. 1180-1185, (2008); Schmitz R.J., Kulas A.S., Perrin D.H., Riemann B.L., Shultz S.J., Sex differences in lower extremity biomechanics during single leg landings, Clin. Biomech., 22, pp. 681-688, (2007); Shemmell J., Krutky M.A., Perreault E.J., Stretch sensitive reflexes as an adaptive mechanism for maintaining limb stability, Clin. Neurophysiol., 121, pp. 1680-1689, (2010); Shultz S.J., Nguyen A.D., Leonard M.D., Schmitz R.J., Thigh strength and activation as predictors of knee biomechanics during a drop jump task, Med. Sci. Sports Exercise, 41, pp. 857-866, (2009); Sigward S.M., Pollard C.D., Powers C.M., The influence of sex and maturation on landing biomechanics: implications for anterior cruciate ligament injury, Scand. J. Med. Sci. Sports, 22, pp. 502-509, (2011); Sigward S.M., Powers C.M., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clin. Biomech., 21, pp. 41-48, (2006); Soderman K., Pietila T., Alfredson H., Werner S., Anterior cruciate ligament injuries in young females playing soccer at senior levels, Scand. J. Med. Sci. Sports, 12, pp. 65-68, (2002); Taube W., Leukel C., Schubert M., Gruber M., Rantalainen T., Gollhofer A., Differential modulation of spinal and corticospinal excitability during drop jumps, J. Neurophysiol., 99, pp. 1243-1252, (2008); Valero-Cuevas F.J., Smaby N., Venkadesan M., Peterson M., Wright T., The strength-dexterity test as a measure of dynamic pinch performance, J. Biomech., 36, pp. 265-270, (2003); Venkadesan M., Guckenheimer J., Valero-Cuevas F.J., Manipulating the edge of instability, J. Biomech., 40, pp. 1653-1661, (2007); Voigt M., Dyhre-Poulsen P., Simonsen E.B., Modulation of short latency stretch reflexes during human hopping, Acta Physiol. Scand., 163, pp. 181-194, (1998); von Porat A., Roos E.M., Roos H., High prevalence of osteoarthritis 14 years after an anterior cruciate ligament tear in male soccer players: a study of radiographic and patient relevant outcomes, Ann. Rheumatic Dis., 63, pp. 269-273, (2004); Yard E.E., Schroeder M.J., Fields S.K., Collins C.L., Comstock R.D., The epidemiology of United States high school soccer injuries, 2005-2007, Am. J. Sports Med., 36, pp. 1930-1937, (2008)","M.A. Lyle; School of Applied Physiology, Georgia Institute of Technology, Atlanta, GA 30332-0356, 555 14th Street NW, United States; email: mlyle@ap.gatech.edu","","","18732380","","JBMCB","24275440","English","J. Biomech.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84891835712" "Padulo J.; D'Ottavio S.; Pizzolato F.; Smith L.; Annino G.","Padulo, J. (54684953400); D'Ottavio, S. (6603498439); Pizzolato, F. (56614701500); Smith, L. (55082233800); Annino, G. (23388348900)","54684953400; 6603498439; 56614701500; 55082233800; 23388348900","Kinematic analysis of soccer players in shuttle running","2012","International Journal of Sports Medicine","33","6","","459","462","3","28","10.1055/s-0032-1304641","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863417646&doi=10.1055%2fs-0032-1304641&partnerID=40&md5=9d83510f400d98c5dff8b82760579b01","Faculty of Medicine and Surgery, University of Rome, 00133 Rome, Via Columbia s.n.c., Italy; Faculty of Sport Science, University of Verona, Italy; School of Health, Sport and Rehabilitation Sciences, University of Salford, United Kingdom","Padulo J., Faculty of Medicine and Surgery, University of Rome, 00133 Rome, Via Columbia s.n.c., Italy; D'Ottavio S., Faculty of Medicine and Surgery, University of Rome, 00133 Rome, Via Columbia s.n.c., Italy; Pizzolato F., Faculty of Sport Science, University of Verona, Italy; Smith L., School of Health, Sport and Rehabilitation Sciences, University of Salford, United Kingdom; Annino G., Faculty of Medicine and Surgery, University of Rome, 00133 Rome, Via Columbia s.n.c., Italy","The intermittent shuttle running test is mainly used within soccer to assess aerobic power. For this reason we studied kinematic parameters and heart rate at both an increasing speed, [Yo-Yo Endurance Lv 1 (Y 1)] and at constant velocity [95% maximal aerobic velocity (MAV 95%)]. 12 soccer players were selected for this study. A high-speed digital camera (210 Hz) was used to record motion; Dartfish5.5Pro was used to perform 2D video analysis and heart rate was also recorded and computed during the test. The parameters considered (baseline measures with respect to the end of each test) in this study were: step length (SL), contact time (CT) and heart rate (HR). SL: 40% in Y 1 and 22% in MAV 95%. CT: 31% in Y 1 and 29% in MAV 95%. HR: increased 96% in Y 1 and 17% in MAV 95%. These results highlight 2 different neuromechanical strategies adopted under fatigued conditions. In light of the clear changes of the CT in MAV 95% (29%) and with respect to the moderate changes in HR (17%) it is clear that the CT is the most important parameter, as it experiences greater adaptations associated with neuromuscular patterns, under a fatigued condition as opposed to HR. © Georg Thieme Verlag KG Stuttgart New York.","field testing; footstep analysis; heart rate","Biomechanics; Exercise Test; Heart Rate; Humans; Image Processing, Computer-Assisted; Running; Soccer; Time and Motion Studies; Video Recording; Young Adult; adult; article; biomechanics; exercise test; heart rate; human; image processing; instrumentation; physiology; running; sport; task performance; videorecording","Bangsbo J., The physiology of soccer - With special reference to intense intermittent exercise, Acta Physiol Scand Suppl, 619, pp. 34-36, (1994); Belli A., Rey S., Bonnefoy R., Lacour J.R., A simple device for kinematic measurements of human movement, Ergonomics, 35, pp. 177-186, (1992); Cavanagh P.R., Williams K.R., The effect of stride length variation on oxygen uptake during distance running, Medicine and Science in Sports and Exercise, 14, 1, pp. 30-35, (1982); Di Prampero P.E., The energy cost of human locomotion on land and in water, International Journal of Sports Medicine, 7, 2, pp. 55-72, (1986); Ferrari B.D., Impellizzeri F.M., Rampinini E., Castagna C., Bishop D., Wisloff U., Sprint vs. interval training in football, Int J Sports Med, 29, pp. 668-674, (2008); Harriss D.J., Atkinson G., Update - Ethical standards in sport and exercise science research, Int J Sports Med, 32, pp. 819-821, (2011); Hasegawa H., Yamauchi T., Kraemer W.J., Foot strike patterns of runners at the 15-km point during an elite-level half marathon, J Strength Cond Res, 21, pp. 888-893, (2007); Impellizzeri F.M., Rampinini E., Castagna C., Bishop D., Ferrari B.D., Tibaudi A., Wisloff U., Validity of a repeated-sprint test for football, Int J Sports Med, 29, pp. 899-905, (2008); Morio C., Chavet P., Androuet P., Foissac M., Berton E., Nicol C., Time course of neuro-mechanical changes underlying stretch-shortening cycle during intermittent exhaustive rebound exercise, Eur J Appl Physiol, 111, pp. 2295-2305, (2011); Okuno N.M., Perandini L.A., Bishop D., Simoes H.G., Pereira G., Berthoin S., Kokubun E., Nakamura F.Y., Physiological and perceived exertion responses at intermittent critical power and intermittent maximal lactate steady state, J Strength Cond Res, 25, pp. 2053-2058, (2011); Padulo J., Annino G., Migliaccio G.M., D'Ottavio S., Tihanyi J., Kinematics of running at different slopes and speeds, J Strength Cond Res, (2011); Reilly T., Williams A.M., Nevill A., Franks A., A multidisciplinary approach to talent identification in soccer, J Sports Sci, 18, pp. 695-702, (2000); Soares-Caldeira L.F., Okuno N.M., Magalhaes S.M., Campbell C.S., Simoes H.G., Nakamura F.Y., Similarity in physiological and perceived exertion responses to exercise at continuous and intermittent critical power, Eur J Appl Physiol, (2011); Swanson S.C., Caldwell G.E., An integrated biomechanical analysis of high speed incline and level treadmill running, Medicine and Science in Sports and Exercise, 32, 6, pp. 1146-1155, (2000)","J. Padulo; Faculty of Medicine and Surgery, University of Rome, 00133 Rome, Via Columbia s.n.c., Italy; email: sportcinetic@yahoo.it","","","14393964","","IJSMD","22422311","English","Int. J. Sports Med.","Article","Final","","Scopus","2-s2.0-84863417646" "Tomkinson G.R.; Popović N.; Martin M.","Tomkinson, Grant R. (6603283160); Popović, Nick (7007023365); Martin, Max (57188560340)","6603283160; 7007023365; 57188560340","Bilateral symmetry and the competitive standard attained in elite and sub-elite sport","2003","Journal of Sports Sciences","21","3","","201","211","10","25","10.1080/0264041031000071029a","https://www.scopus.com/inward/record.uri?eid=2-s2.0-12444314027&doi=10.1080%2f0264041031000071029a&partnerID=40&md5=69e9d11fcc4305f5bfda28d9f6efd5ad","Computer Simulation Laboratory, School of Health Sciences, University of South Australia, Underdale, SA, 5032, Holbrooks Road, Australia; Sydney Kings Basketball, Pymont, NSW, 2009, 137 mont Street, Australia","Tomkinson G.R., Computer Simulation Laboratory, School of Health Sciences, University of South Australia, Underdale, SA, 5032, Holbrooks Road, Australia; Popović N., Sydney Kings Basketball, Pymont, NSW, 2009, 137 mont Street, Australia; Martin M., Computer Simulation Laboratory, School of Health Sciences, University of South Australia, Underdale, SA, 5032, Holbrooks Road, Australia","Deviations from perfect bilateral symmetry, in a normally symmetric organism, signal a lack of developmental precision. In adult human males, previous studies have shown that symmetry is positively associated with height, body mass and physical performance. In this study, symmetry was measured in adult male athletes from two sports, competing at two different standards. Fifty-two elite and sub-elite Australian male basketballers and soccer players, who regularly competed in the national and state leagues in the 2000-2001 season, participated in the study. All participants underwent anthropometric assessment. Both basketballers and national league athletes in general were significantly taller (P< 0.0001) and heavier (P< 0.001) (and more ectomorphic in the case of basketballers) than their soccer-playing and state league counterparts, respectively. The anthropometric traits were examined further for departures from perfect bilateral symmetry. No significant differences in size-corrected asymmetry were observed between the two competitive standards (P>0.50), the two sports (P>0.50) or among any of the competitive standard × sport groups (P>0.50). Contrary to expectations, we did not find any differences in asymmetry between adult male athletes from two sports (basketball and soccer), competing at two different standards (professional national league and semi- professional state league). © 2003 Taylor & Francis Ltd.","Anthropometry; Bilateral symmetry; Developmental stability; Physical performance","Adult; Anthropometry; Basketball; Humans; Male; Soccer; adult; anthropometric parameters; article; athlete; Australia; basketball; biomechanics; body height; body mass; comparative study; competition; competitive behavior; controlled study; endurance; fluctuating asymmetry; human; human experiment; joint characteristics and functions; male; normal human; physical performance; sport; sports medicine; standard","Brakefield P.M., Brcukcr C.J., The gcnctical basis of fluctuating asymmetry for developmentaUy integrated traits in a butterfly eyespot pattern, Proceedings of the Royal Society of London B, 263, pp. 1557-1563, (1996); Carter J.E.L., Heath B.H., Somatotyping: Development and Applications, (1990); Coren S., Porac C., Fifty centuries of right- handedness: The historical record, Science, 198, pp. 631-632, (1977); Gangestad S.W., Thornhill R., Yeo R.A., Facial attractiveness, developmental stability, and fluctuating asymmetry, Ethology and Sociobiology, 15, pp. 73-85, (1994); Gore C., Norton K.I., Olds T.S., Whittingham N.O., Birchall K., Clough M., Dickerson B., Downie L., Accreditation in anthropometry: An Australian model, Anthropometrica, pp. 395-411, (1996); Graham J.H., Emlen J.M., Freeman D.C., Leamy L.J., Kieser J.A., Directional asymmetry and the measurement of developmental instability, Biological Journal of the Linnean Society, 64, pp. 1-16, (1998); Jolicceur P., Bilateral symmetry and asymmetry in limb bones of Martes Americana and man, Revue Canadienne De Biologie, 22, pp. 409-432, (1963); Jones H.H., Priest J.D., Hayes W.C., Tichcnor C.C., Nagel D.A., Humeral hypertrophy in response to exercise, Journal of Bone and Joint Surgery, A59, pp. 204-208, (1977); King J.W., Brelsford H.J., Tullos H.S., Analysis of the pitching arm of the professional baseball pitcher, Clinical Orthopaedics and Related Research, 67, pp. 116-123, (1969); Laubach L.L., McConville J.T., Notes on anthropometric technique: Anthropometric measurements - right and left sides, American Journal of Physical Anthropology, 26, pp. 367-369, (1967); Leamy L., Is developmental stability heritable?, Journal of Evolutionary Biology, 10, pp. 21-29, (1997); Leamy L., Heritability of directional and fluctuating asymmetry for mandibular characters in random-bred mice, Journal of Evolutionary Biology, 12, pp. 146-155, (1999); Leamy L.J., Routman E.J., Cheverud J.M., A scarch for quantitative trait loci affecting asymmetry of mandibular characters in mice, Evolution, 51, pp. 957-969, (1997); Leung B., Correcting for allometry in studies of fluctuating asymmetry and quality within samples, Proceedings of the Royal Society of London B, 265, pp. 1623-1629, (1998); Ixung B., Forbes M.R., Houle D., Fluctuating asymmetry as a bioindicator of stress: Comparing efficacy of analyses involving multiple traits, American Naturalist, 155, pp. 101-115, (2000); Levene H., Robust tests for equality of variances, Contributions to Probability and Statistics: Essays in Honor of Harold Hotelling, pp. 278-292, (1960); Malina R.M., Buschang P.H., Anthropometric asymmetry in normal and mentally retarded males, Annals of Human Biology, 11, pp. 515-531, (1984); Manning J.T., Fluctuating asymmetry and body weight in men and women: Implications for sexual selection, Ethology and Sociobiology, 16, pp. 145-153, (1995); Manning J.T., Ockenden L., Fluctuating asymmetry in racehorses, Nature, 370, pp. 185-186, (1994); Manning J.T., Pickup L.J., Symmetry and performance in middle distance runners, International Journal of Sports Medicine, 19, pp. 205-209, (1998); Manning J.T., Koukourakis K., Brodie D.A., Fluctuating asymmetry, metabolic rate and sexual selection in human males, Evolution and Human Behavior, 18, pp. 15-21, (1997); Mailer A.P., Directional selection on directional asymmetry: Testes size and secondary sexual characters in birds, Proceedings of the Royal Society of London B, 258, pp. 147-151, (1994); Moller A.P., Developmental stability and fitness: A review, American Naturalist, 149, pp. 916-932, (1997); Moller A.P., Swaddle J.P., Asymmetry, Developmental Stability and Evolution, (1997); Moller A.P., Sanotra G.S., Vestergaard K.S., Developmental instability and light regime in chickens (Gallus gallus), Applied Animal Behaviour Science, 62, pp. 57-71, (1999); Miinter A.H., A study of the lengths of the long bones of the arms and legs in man, with special reference to Anglo-Saxon skeletons, Biometrika, 28, pp. 258-294, (1936); Norton K.I., Olds T.S., Olive S., Craig N., Anthropometry and sports performance, Anthropome-Trica, pp. 287-364, (1996); Norton K.I., Whittingham N.O., Carter J.E.L., Kerr D.A., Gore C.J., Marfell-Joncs M.J., Measurement techniques in anthropometry, Anthro- Pometrica, pp. 25-75, (1996); Palmer A.R., Fluctuating asymmetry analyses: A primer, Developmental Instability: Its Origins and Evolutionary Implications, pp. 335-364, (1994); Palmer A.R., Strobcck C., Fluctuating asymmetry: Measurement, analysis, patterns, Annual Review of Ecology and Systematics, 17, pp. 391-421, (1986); Palmer A.R., Strobeck C., Fluctuating asymmetry as a measure of developmental stability: Implications of non-normal distributions and power of statistical tests, Acta Zoologica Fennica, 191, pp. 57-72, (1992); Palmer A.R., Strobcck C., Fluctuating asymmetry analysis revisited, Developmental Instability: Causes and Consequences; Parsons P.A., Fluctuating asymmetry: A biological monitor of environmental and genomic stress, Heredity, 68, pp. 361-364, (1992); Rice W.R., Analyzing tables of statistical tests, Evolution, 43, pp. 223-225, (1989); Shackelford T.K., Facial asymmetry as an indicator of psychological, emotional, and physiological distress, Journal of Personality and Social Psychology, pp. 456-466, (1997); Singh I., Functional asymmetry in the lower limbs, Acta Anatomica, 77, pp. 131-138, (1970); Sokal R.R., Rohlf F.J., Biometry, (1995); Swaddle J.P., Within-individual changes in developmental stability affect flight performance, Behavioral Ecology, 8, pp. 601-604, (1997); Thornhill R., Gangcstad S.W., Human fluctuating asymmetry and sexual behaviour, Psychological Science, 5, pp. 297-302, (1994); Tomkinson G.R., Olds T.S., Physiological correlates of bilateral symmetry in humans, International Journal of Sports Medicine, 21, pp. 545-550, (2000); Tracy M., Freeman D.C., Duda J.J., Miglia K.J., Graham J.H., Hough R.A., Developmental instability: An appropriate indicator of plant fitness components, Developmental Instability: Causes and Consequences; Van Valen I., A study of fluctuating asymmetry, Evolution, 16, pp. 125-142, (1962); Withers R.T., Craig N.P., Bourdon P.C., Norton K.I., Relative body fat and anthropometric prediction of body density of male athletes, European Journal of Applied Physiology and Occupational Physiology, 56, pp. 191-200, (1987); Yamaguchi T., Studies on the handedness of the fiddler crab, Uca lactea, Biological Bulletin, 152, pp. 424-436, (1977)","G.R. Tomkinson; Computer Simulation Laboratory, School of Health Sciences, University of South Australia, Underdale, SA, 5032, Holbrooks Road, Australia; email: grant_tomkinson@yahoo.com.au","","","02640414","","","12703849","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-12444314027" "Inoue K.; Nunome H.; Sterzing T.; Shinkai H.; Ikegami Y.","Inoue, Koichiro (55964055200); Nunome, Hiroyuki (6507093692); Sterzing, Thorsten (23986270100); Shinkai, Hironari (55798761200); Ikegami, Yasuo (7103189958)","55964055200; 6507093692; 23986270100; 55798761200; 7103189958","Dynamics of the support leg in soccer instep kicking","2014","Journal of Sports Sciences","32","11","","1023","1032","9","39","10.1080/02640414.2014.886126","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896494369&doi=10.1080%2f02640414.2014.886126&partnerID=40&md5=1413b5ba6c3b2f205bcedaac844f9f76","Graduate School of Education and Human Development, Nagoya University, Nagoya, Japan; Research Centre of Health, Physical Fitness and Sports, Nagoya University Nagoya, Japan; Department of Human Locomotion, Chemnitz University of Technology, Chemnitz, Germany; Yamagata University, Yamagata, Japan","Inoue K., Graduate School of Education and Human Development, Nagoya University, Nagoya, Japan; Nunome H., Research Centre of Health, Physical Fitness and Sports, Nagoya University Nagoya, Japan; Sterzing T., Department of Human Locomotion, Chemnitz University of Technology, Chemnitz, Germany; Shinkai H., Yamagata University, Yamagata, Japan; Ikegami Y., Research Centre of Health, Physical Fitness and Sports, Nagoya University Nagoya, Japan","We aimed to illustrate support leg dynamics during instep kicking to evaluate the role of the support leg action in performance. Twelve male soccer players performed maximal instep kicks. Their motions and ground reaction forces were recorded by a motion capture system and a force platform. Moments and angular velocities of the support leg and pelvis were computed using inverse dynamics. In most joints of the support leg, the moments were not associated with or counteracting the joint motions except for the knee joint. It can be interpreted that the initial knee flexion motion counteracting the extension joint moment has a role to attenuate the shock of landing and the following knee extension motion associated with the extension joint moment indirectly contributes to accelerate the swing of kicking leg. Also, appreciable horizontal rotation of the pelvis coincided with increase of the interaction moment due to the hip joint reaction force on the support leg side. It can be assumed that the interaction moment was the main factor causing the pelvis counter-clockwise rotation within the horizontal plane from the overhead view that precedes a proximal-to-distal sequence of segmental action of the swing leg. © 2014 Taylor & Francis.","angular velocity; interaction moment; joint moment; pelvis rotation; three-dimensional","Acceleration; Adult; Athletic Performance; Biomechanical Phenomena; Hip; Hip Joint; Humans; Knee; Knee Joint; Leg; Male; Movement; Pelvis; Rotation; Soccer; Stress, Mechanical; Task Performance and Analysis; Young Adult; acceleration; adult; article; athletic performance; biomechanics; hip; human; knee; leg; male; mechanical stress; movement (physiology); pelvis; rotation; soccer; task performance; young adult","Ae M., Tang H., Yokoi T., Estimation of inertial properties on the body segments in Japanese athletes, Biomechanism, 11, 23-33., (1992); Andersen T.B., Dorge H.C., The influence of speed of approach and accuracy constrain on the maximal speed of the ball in soccer kicking, Scandinavian Journal of Medicine & Science in Sports, 21, 1, pp. 79-84, (2011); Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of fatigue on instep kicking kinetics and kinematics in association football, Journal of Sports Sciences, 24, 9, pp. 951-960, (2006); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, Journal of Sports Science & Medicine, 3, pp. 72-79, (2002); Davis R., Ounpuu S., Tyburski D., Gage J., A gait analysis data collection and reduction technique, Human Movement Science, 10, pp. 575-587, (1991); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, 8, pp. 293-299, (2002); Feltner M.E., Nelson S.T., Three-dimensional kinematics of the throwing arm during the penalty throw in water polo, Journal of Applied Biomechanics, 12, 3, pp. 347-372, (1996); Isokawa M., Lees A., A biomechanical analysis of the instep kick motion in soccer, Science & football, pp. 449-455, (1988); Katis A., Kellis E., Three-dimensional kinematics and ground reaction forces during the instep and outstep soccer kicks in pubertal players, Journal of Sports Sciences, 28, 11, pp. 1233-1241, (2010); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Science & Medicine, 6, pp. 154-165, (2007); Kellis E., Katis A., Gissis I., Knee biomechanics of the support keg in soccer kicks from three angle of approach, Medicine & Science in Sports & Exercise, 36, 6, pp. 1017-1028, (2004); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, 8, pp. 805-817, (2010); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, 3, pp. 211-234, (1998); Lees A., Steward I., Rahmana N., Barton G., Lower limb function in the maximal instep kick in soccer, Contemporary sport, leisure & ergonomics, pp. 149-159, (2009); Levanon J., Dapena J., Comparison of the kinematics of the full-instep kick and pass kicks in soccer, Medicine & Science in Sports & Exercise, 30, 6, pp. 917-927, (1998); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science & football, pp. 441-448, (1988); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine & Science in Sports & Exercise, 34, 12, pp. 2028-2036, (2002); Nunome H., Ikegami Y., The effect of hip linear motion on lower leg angular velocity during soccer instep kicking, Proceedings of the XXIIIrd Symposium of the International Society of Biomechanics in Sports, pp. 770-772, (2005); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 24, 5, pp. 529-541, (2006); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, Journal of Sports Sciences, 24, 1, pp. 11-22, (2006); Orloff H., Sumida B., Chow J., Habibi L., Fujino A., Kramer B., Ground reaction forces and kinematics of plant leg position during instep kicking in male and female collegiate soccer players, Sports Biomechanics, 7, 2, pp. 238-247, (2008); Putnam C.A., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Medicine & Science in Sports & Exercise, 23, 1, pp. 130-144, (1991); Roberts E.M., Metcalf A., Mechanical analysis of kicking, Biomechanics I, pp. 315-319, (1968); Rodano R., Tavana R., Three-dimensional analysis of instep kick in professional soccer players, Science & football II, pp. 441-448, (1993); Scurr J., Hall B., The effects of approach angle on penalty kicking accuracy and kick kinematics with recreational soccer players, Journal of Sports Sciences & Medicine, 8, pp. 230-234, (2009); Shinkai H., Nunome H., Isokawa M., Ikegami Y., Ball impact dynamics of instep soccer kicking, Medicine & Science in Sports & Exercise, 41, 4, pp. 889-897, (2009); Sprigings E., Marshall R., Elliot B., Jennings L., A three-dimensional kinematic method for determining the effective of arm segment rotations in producing racquet-head speed, Journal of Biomechanics, 27, 3, pp. 245-254, (1994); Wickstrom R.L., Developmental kinesiology, Exercise & Sports Science Reviews, 3, pp. 163-192, (1975); Winter D.A., Biomechanics and motor control of human movement, (2009)","K. Inoue; Graduate School of Education and Human Development, Nagoya University, Nagoya, Japan; email: k.inoue@nagoya-u.jp","","Routledge","02640414","","JSSCE","24575753","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-84896494369" "Shan G.; Daniels D.; Wang C.; Wutzke C.; Lemire G.","Shan, G. (7005942347); Daniels, D. (8933976900); Wang, C. (8933977000); Wutzke, C. (8933977100); Lemire, G. (8933977200)","7005942347; 8933976900; 8933977000; 8933977100; 8933977200","Biomechanical analysis of maximal instep kick by female soccer players","2005","Journal of Human Movement Studies","49","3","","149","168","19","25","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-24944525755&partnerID=40&md5=dff0c4343169e90676f568b217a857d4","Department of Kinesiology, University of Lethbridge, Lethbridge, Alta., Canada; Department of Automation Science, Yantai Education Institute, Yantai Television University, Yantai, China; Department of Kinesiology, University of Lethbridge, Lethbridge, Alta. T1K 3M4, 4401 University Drive, Canada","Shan G., Department of Kinesiology, University of Lethbridge, Lethbridge, Alta., Canada, Department of Kinesiology, University of Lethbridge, Lethbridge, Alta. T1K 3M4, 4401 University Drive, Canada; Daniels D., Department of Kinesiology, University of Lethbridge, Lethbridge, Alta., Canada; Wang C., Department of Automation Science, Yantai Education Institute, Yantai Television University, Yantai, China; Wutzke C., Department of Kinesiology, University of Lethbridge, Lethbridge, Alta., Canada; Lemire G., Department of Kinesiology, University of Lethbridge, Lethbridge, Alta., Canada","This study used 3D motion capture and full-body biomechanical modeling to examine soccer kicking done by females. The goal was to reveal the effects of long-term training by comparing novices with skilled athletes. The data collection technology consisted of a Vicon(tm) 3D motion capture system with 9 high-speed cameras (120 Hz) and wireless electromyography (EMG). Twenty female subjects (10 skilled, 10 novices), ranging in age from 19 to 24, were measured executing the maximal instep soccer kick. Results show effective upper-body movement to be a key factor in creating optimal initial conditions for more explosive muscle contraction during kicking. The EMG results also reveal that skilled players employ muscle control in a way that produces more rapid acquisition of maximal contractions and more accurate timing of the gross movement pattern. It can be concluded that long-term training leads to a control pattern which optimizes muscle lengths and contributes to explosive muscle activation for obtaining higher ball release velocity. © 2005 Teviot Scientfic Publications.","3D motion capture; EMG intensity; Full-body modeling; Pre-lengthening","","Anderson D.I., Sidaway B., Coordination changes associated with practice of a soccer kick, Res. Q. Exerc. Sport, 65, pp. 93-99, (1994); Arsenault A.B., Winter D.A., Marteniuk R.G., Bilateralism of EMG profiles in human locomotion, Am. J. Phys. Med.., 65, pp. 1-16, (1986); David K., Lees A., Burwitz L., Understanding and measuring coordination and control in kicking skills in soccer: Implications for talent identification and skill acquisition, J. Sport Sci., 18, pp. 703-714, (2000); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, J. Sport Sci., 20, pp. 293-299, (2002); Ekstrand J., Injuries, Football (Soccer), pp. 175-194, (1994); Gowitzke B.A., Milner M., Understanding the Scientific Bases of Human Movement, 2nd Ed., (1980); Lees, Nolan L., The biomechanics of soccer: A review, J. Sport Sci., 16, pp. 211-234, (1998); Nandedkar S.D., Sanders D.B., Measurement of the amplitude of the EMG envelope, Muscle Nerve, 13, pp. 933-938, (1990); Nordin M., Frankel V., Basic Biomechanics of the Musculoskeletal System, pp. 203-255, (2001); Soccer in the USA, (2004); Shan G.B., Bohn C., Anthropometrical data and coefficients of regression related to gender and race, Applied Ergonomics, 34, pp. 327-337, (2003); Shiavi R., Frigo C., Pedotti A., Electromyographic signals during gait: Criteria for envelope filtering and number of strides, Med. Bio. Eng. Comp., 36, 2, pp. 171-178, (1998); Winter D.A., Pathologic gait diagnosis with computer-averaged electromyographic profiles, Ach. Phys. Med. Rehab., 65, pp. 393-398, (1984)","G. Shan; Department of Kinesiology, University of Lethbridge, Lethbridge, Alta. T1K 3M4, 4401 University Drive, Canada; email: g.shan@uleth.ca","","","03067297","","","","English","J. Hum. Mov. Stud.","Article","Final","","Scopus","2-s2.0-24944525755" "Lee M.J.C.; Lloyd D.G.; Lay B.S.; Bourke P.D.; Alderson J.A.","Lee, M.J.C. (56143449000); Lloyd, D.G. (57202439944); Lay, B.S. (7003960150); Bourke, P.D. (7004729754); Alderson, J.A. (8599127100)","56143449000; 57202439944; 7003960150; 7004729754; 8599127100","Different visual stimuli affect body reorientation strategies during sidestepping","2017","Scandinavian Journal of Medicine and Science in Sports","27","5","","492","500","8","26","10.1111/sms.12668","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959306597&doi=10.1111%2fsms.12668&partnerID=40&md5=9a3f9249ece859bab6575868a0017172","School of Sport Science, Exercise and Health, The University of Western Australia, Perth, WA, Australia; Singapore Sports Institute, Sport Singapore, Singapore; Centre for Musculoskeletal Research, Griffith Health Institute, Griffith University, Gold Coast, QLD, Australia; University of New South Wales, Sydney, NSW, Australia","Lee M.J.C., School of Sport Science, Exercise and Health, The University of Western Australia, Perth, WA, Australia, Singapore Sports Institute, Sport Singapore, Singapore; Lloyd D.G., School of Sport Science, Exercise and Health, The University of Western Australia, Perth, WA, Australia, Centre for Musculoskeletal Research, Griffith Health Institute, Griffith University, Gold Coast, QLD, Australia; Lay B.S., School of Sport Science, Exercise and Health, The University of Western Australia, Perth, WA, Australia; Bourke P.D., University of New South Wales, Sydney, NSW, Australia; Alderson J.A., School of Sport Science, Exercise and Health, The University of Western Australia, Perth, WA, Australia","Sidestepping in response to unplanned stimuli is a high-risk maneuver for anterior cruciate ligament (ACL) injuries. Yet, differences in body reorientation strategies between high- and low-level soccer players prior to sidestepping in response to quasi-game-realistic vs non-game-realistic stimuli, remain unknown. Fifteen high-level (semi-professional) and 15 low-level (amateur) soccer players responded to a quasi-game-realistic one-defender scenario (1DS) and two-defender scenario (2DS), and non-game-realistic arrow-planned condition (AP) and arrow-unplanned condition (AUNP). The AP, 1DS, 2DS to AUNP represented increasing time constraints to sidestep. Selected biomechanics from the penultimate step to foot-off were assessed using a mixed-model (stimuli × skill) ANOVA (P < 0.05). Step length decreased in the defender scenarios compared with the arrow conditions. Support foot placement increased laterally, away from mid-pelvis, with increasing temporal constraints. Greater trunk lateral flexion in the 1DS, 2DS, and AUNP has been associated with ACL injury onsets. Higher level players pushed off closer to their pelvic midline at initial foot contact in the 2DS especially. Higher level perception of game-realistic visual information could have contributed to this safer neuromuscular strategy that, when understood better, could potentially be trained in lower level players to reduce ACL injury risk associated with dangerous sidestepping postures. © 2016 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd","ACL; biomechanics; cutting; injury; perceptual-motor skills; Three-dimensional","Analysis of Variance; Biomechanical Phenomena; Cues; Humans; Knee Joint; Male; Movement; Photic Stimulation; Posture; Soccer; Weight-Bearing; Young Adult; analysis of variance; association; biomechanics; body position; human; knee; male; movement (physiology); photostimulation; physiology; soccer; weight bearing; young adult","Abernethy B., Russell D.G., Advance cue utilization by skilled cricket batsmen, Aust J Sci Med Sport, 16, 2, pp. 2-10, (1984); Benjaminse A., Welling W., Otten B., Gokeler A., Novel methods of instruction in ACL injury prevention programs, a systematic review, Phys Ther Sport, 16, pp. 176-186, (2015); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting manoeuvres, Med Sci Sports Exerc, 35, 1, pp. 119-127, (2003); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., Anticipatory effects on knee joint loading during running and cutting manoeuvres, Med Sci Sports Exerc, 33, 7, pp. 1176-1181, (2001); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting manoeuvres, Med Sci Sports Exerc, 33, 7, pp. 1168-1175, (2001); Besier T.F., Sturnieks D.L., Alderson J.A., Lloyd D.G., Repeatability of gait data using a functional hip joint centre and helical axis, J Biomech, 36, 8, pp. 1159-1168, (2003); Brown S.R., Brughelli M., Hume P.A., Knee mechanics during planned and unplanned sidestepping: a systematic review and meta-analysis, Sports Med, 44, 11, pp. 1578-1588, (2014); Brown T.N., Palmieri-Smith R.M., McLean S.G., Sex and limb differences in hip and knee kinematics and kinetics during anticipated and unanticipated jump landings: implications for anterior cruciate ligament injury, Br J Sports Med, 43, 13, pp. 1049-1056, (2009); Capozzo A., Catani F., Della Croce U., Leardini A., Position and orientation in space of bones during movement: anatomical frame definition and determination, Clin Biomech, 10, 4, pp. 171-178, (1995); Cortes N., Onate J., Van Lunen B., Pivot task increases knee frontal plane loading compared with sidestep and drop-jump, J Sports Sci, 29, 1, pp. 83-92, (2011); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Changing sidestep cutting technique reduces knee valgus loading, Am J Sports Med, 37, 11, pp. 2194-2200, (2009); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Russo K.A., The effect of technique change on knee loads during sidestep cutting, Med Sci Sports Exerc, 39, 10, pp. 1765-1773, (2007); Farrow D., Young W., Bruce L., The development of a test of reactive agility for netball: a new methodology, Journal of Science and Medicine in Sport, 8, 1, pp. 52-60, (2005); Gibson J.J., The theory of affordances, Perceiving, acting and knowing: toward an ecological psychology, pp. 67-82, (1977); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S.J., Colosimo A.J., McLean S.G., van den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes. A prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Hewett T.E., Paterno M.V., Myer G.D., Strategies for enhancing proprioception and neuromuscular control of the knee, Clin Orthop Relat Res, 402, pp. 76-94, (2002); Hewett T.E., Torg J.S., Boden B.P., Video analysis of trunk and knee motion during non-contact anterior cruciate ligament injury in female athletes: lateral trunk and knee abduction motion are combined components of the injury mechanism, Br J Sports Med, 43, 6, pp. 417-422, (2009); Houck J.R., Duncan A., De Haven K.E., Comparison of frontal plane trunk kinematics and hip and knee moments during anticipated and unanticipated walking and side step cutting tasks, Gait Posture, 24, 3, pp. 314-322, (2006); Ireland M., Anterior cruciate ligament injury in female athletes: epidemiology, J Athl Train, 34, 2, pp. 150-154, (1999); Jamison S.T., Pan X., Chaudhari A.M.W., Knee moments during run-to-cut maneuvers are associated with lateral trunk positioning, J Biomech, 45, 11, pp. 1881-1885, (2012); Krosshaug T., Nakamae A., Boden B.P., Engebretsen L., Smith G., Slauterbeck J.R., Hewett T.E., Bahr R., Mechanisms of anterior cruciate ligament injury in basketball, Am J Sports Med, 35, 3, pp. 359-367, (2007); Lee M.J.C., Bourke P., Alderson J.A., Lloyd D.G., Lay B., Stereoscopic filming for investigating evasive sidestepping and anterior cruciate ligament injury risk, Stereoscopic Displays and Applications XXI. In Proceedings of the SPIE-IS&T Electronic Imaging, (2010); Lee M.J.C., Lloyd D.G., Lay B.S., Bourke P.D., Alderson J.A., Effects of different visual stimuli on postures and knee moments during sidestepping, Med Sci Sports Exerc, 45, 9, pp. 1740-1748, (2013); Lee M.J.C., Reid S.L., Elliott B.C., Lloyd D.G., Running biomechanics and lower limb strength associated with prior hamstring injury, Med Sci Sports Exerc, 41, 10, pp. 1942-1951, (2009); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, 6, pp. 930-935, (1995); McLean S.G., Lipfert S.W., Van Den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, 6, pp. 1008-1016, (2004); McLean S.G., Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: potential for injury in women, Med Sci Sports Exerc, 31, 7, pp. 959-968, (1999); Olsen O.-E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: a systematic video analysis, Am J Sports Med, 32, 4, pp. 1002-1012, (2004); Patla A.E., Adkin A., Ballard T., Online steering: coordination and control of body centre of mass, head and body reorientation, Exp Brain Res, 129, 4, pp. 629-634, (1999); Winter D.A., Human balance and posture control during standing and walking, Gait Posture, 3, 5, pp. 193-214, (1995); Winter D.A., Biomechanics and motor control of human movement, (2009); Zazulak B.T., Hewett T.E., Reeves N.P., Goldberg B., Cholewicki J., Deficits in neuromuscular control of the trunk predict knee injury risk: a prospective biomechanical-epidemiologic study, Am J Sports Med, 35, 7, pp. 1123-1130, (2007)","M.J.C. Lee; School of Sport Science, Exercise and Health, The University of Western Australia, Perth, Australia; email: marcus_lee@sport.gov.sg","","Blackwell Munksgaard","09057188","","SMSSE","26926713","English","Scand. J. Med. Sci. Sports","Article","Final","","Scopus","2-s2.0-84959306597" "Kalkhoven J.T.; Watsford M.L.","Kalkhoven, Judd T. (57194830576); Watsford, Mark L. (6506659669)","57194830576; 6506659669","The relationship between mechanical stiffness and athletic performance markers in sub-elite footballers","2018","Journal of Sports Sciences","36","9","","1022","1029","7","40","10.1080/02640414.2017.1349921","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85023183893&doi=10.1080%2f02640414.2017.1349921&partnerID=40&md5=1a945fca19098c3fad0f17ea1ee93e62","Faculty of Health, University of Technology Sydney, Sydney, Australia","Kalkhoven J.T., Faculty of Health, University of Technology Sydney, Sydney, Australia; Watsford M.L., Faculty of Health, University of Technology Sydney, Sydney, Australia","This study investigated the relationship between several measures of lower-body stiffness and physical performance variables in 22 sub-elite male football players (mean ± SD; 21.9 ± 1.5 yr; 1.79 ± 0.06 m; 72.2 ± 7.2 kg). The participants were assessed for individual muscle stiffness of the Rectus Femoris (RF), Biceps Femoris (BF) and Medial Gastrocnemius (MG) muscles and vertical stiffness (Kvert) was also assessed assessed running acceleration, maximal sprint speed, agility, vertical jumping and muscular strength. Pearson’s correlations quantified the relationships and participants were also separated into relatively stiff (SG) and compliant groups (CG) for each variable. When ranked by Kvert the SG exhibited superior performance during sprinting, agility, jumping and strength (p ≤ 0.05) and when ranked by RF stiffness, SG exhibited superior sprint, agility and drop jump performance (p ≤ 0.05), while MG and BF stiffness were not related to performance. Higher stiffness appears to be beneficial to athletic performance for football players and therefore it may be beneficial for practitioners working with athletes that are required to perform dynamic activities to consider the contribution of stiffness to athletic performance. © 2017 Informa UK Limited, trading as Taylor & Francis Group.","Muscle stiffness; Rate of force development; Sprinting; Vertical jump","Acceleration; Athletic Performance; Biomechanical Phenomena; Exercise Test; Humans; Lower Extremity; Male; Muscle Strength; Muscle, Skeletal; Plyometric Exercise; Running; Soccer; Young Adult; acceleration; athletic performance; biomechanics; exercise test; human; lower limb; male; muscle strength; physiology; plyometrics; running; skeletal muscle; soccer; young adult","Arampatzis A., Schade F., Walsh M., Bruggemann G.P., Influence of leg stiffness and its effect on myodynamic jumping performance, Journal of Electromyography and Kinesiology, 11, 5, pp. 355-364, (2001); Bizzini M., Mannion A.F., Reliability of a new, hand-held device for assessing skeletal muscle stiffness, Clinical Biomechanics, 18, 5, pp. 459-461, (2003); Blazevich A.J., Gill N., Newton R.U., Reliability and validity of two isometric squat tests, The Journal of Strength and Conditioning Research, 16, 2, pp. 298-304, (2002); Bojsen-Moller J., Magnusson S.P., Rasmussen L.R., Kjaer M., Aagaard P., Muscle performance during maximal isometric and dynamic contractions is influenced by the stiffness of the tendinous structures, Journal of Applied Physiology, 99, 3, pp. 986-994, (2005); Brazier J., Bishop C., Simons C., Antrobus M., Read P.J., Turner A.N., Lower extremity stiffness: Effects on performance and injury and implications for training, Strength & Conditioning Journal, 36, 5, pp. 103-112, (2014); Brechue W.F., Mayhew J.L., Piper F.C., Characteristics of sprint performance in college football players, The Journal of Strength and Conditioning Research, 24, 5, pp. 1169-1178, (2010); Bret C., Rahmani A., Dufour A.B., Messonnier L., Lacour J.R., Leg strength and stiffness as ability factors in 100 m sprint running, The Journal of Sports Medicine and Physical Fitness, 42, 3, pp. 274-281, (2002); Brughelli M., Cronin J., A review of research on the mechanical stiffness in running and jumping: Methodology and implications, Scandinavian Journal of Medicine and Science in Sports, 18, 4, pp. 417-426, (2008); Burgess K.E., Connick M.J., Graham-Smith P., Pearson S.J., Plyometric vs. Isometric training influences on tendon properties and muscle output, The Journal of Strength and Conditioning Research, 21, 3, pp. 986-989, (2007); Butler R.J., Crowell H.P., Davis I.M., Lower extremity stiffness: Implications for performance and injury, Clinical Biomechanics, 18, 6, pp. 511-517, (2003); Cavagna G.A., Elastic bounce of the body, Journal of Applied Physiology, 29, 3, pp. 279-282, (1970); Chapman A.E., Caldwell G.E., Selbie W.S., Mechanical output following muscle stretch in forearm supination against inertial loads, Journal of Applied Physiology, 59, 1, pp. 78-86, (1985); Chelly S.M., Denis C., Leg power and hopping stiffness: Relationship with sprint running performance, Medicine and Science in Sports and Exercise, 33, 2, pp. 326-333, (2001); Cohen J., Statistical Power Analyses for the Social Sciences, (1988); Cronin J.B., Hing R.D., McNair P.J., Reliability and validity of a linear position transducer for measuring jump performance, The Journal of Strength & Conditioning Research, 18, 3, pp. 590-593, (2004); Ditroilo M., Forte R., McKeown D., Boreham C., De Vito G., Intraand inter-session reliability of vertical jump performance in healthy middle-aged and older men and women, Journal of Sports Sciences, 29, 15, pp. 1675-1682, (2011); Ditroilo M., Hunter A.M., Haslam S., De Vito G., The effectiveness of two novel techniques in establishing the mechanical and contractile responses of biceps femoris, Physiological Measurement, 32, 8, (2011); Draper J.A., Lancaster M.G., The 505 test: A test for agility in the horizontal plane, Australian Journal of Science and Medicine in Sport, 17, 1, pp. 15-18, (1985); Drouin J.M., Valovich-McLeod T.C., Shultz S.J., Gansneder B.M., Perrin D.H., Reliability and validity of the Biodex system 3 pro isokinetic dynamometer velocity, torque and position measurements, European Journal of Applied Physiology, 91, 1, pp. 22-29, (2004); Farley C.T., Blickhan R., Saito J., Taylor C.R., Hopping frequency in humans: A test of how springs set stride frequency in bouncing gaits, Journal of Applied Physiology, 71, 6, pp. 2127-2132, (1991); Flanagan E.P., Ebben W.P., Jensen R.L., Reliability of the reactive strength index and time to stabilization during depth jumps, The Journal of Strength and Conditioning Research, 22, 5, pp. 1677-1682, (2008); Freriks B., Hermens H., Disselhorst-Klug C., Rau G., The recommendations for sensors and sensor placement procedures for surface electromyography, Seniam, 8, pp. 13-54, (1999); Gabbard C., Hart S., A question of foot dominance, The Journal of General Psychology, 123, 4, pp. 289-296, (1996); Hopkins W., Marshall S., Batterham A., Hanin J., Progressive statistics for studies in sports medicine and exercise science, Medicine and Science in Sports & Exercise, 41, 1, pp. 3-12, (2009); Kraemer H.C., Thiemann S., How Many Subjects?: Statistical Power Analysis in Research, (1987); Kubo K., Kawakami Y., Fukunaga T., Influence of elastic properties of tendon structures on jump performance in humans, Journal of Applied Physiology, 87, 6, pp. 2090-2096, (1999); Kubo K., Morimoto M., Komuro T., Yata H., Tsunoda N., Kanehisa H., Fukunaga T., Effects of plyometric and weight training on muscletendon complex and jump performance, Medicine and Science in Sports and Exercise, 39, pp. 1801-1810, (2007); Laffaye G., Bardy B., Durey A., Leg stiffness and expertise in men jumping, Medicine and Science in Sports and Exercise, 37, 4, pp. 536-543, (2005); Lieber R.L., Leonard M.E., Brown-Maupin C.G., Effects of muscle contraction on the load-strain properties of frog aponeurosis and tendon. Cells, Tissues, Organs, 166, 1, pp. 48-54, (2000); Maganaris C.N., Narici M.V., Reeves N.D., In vivo human tendon mechanical properties: Effect of resistance training in old age, Journal of Musculoskeletal and Neuronal Interactions, 4, 2, pp. 204-208, (2004); Magnusson S.P., Aagaard P., Hansen J., Kirkeby K., Ersen R., Hansen P., Bojsen-Moller J., Preconditioning of human tendon-aponeurosis, Vivo. Medicine and Science in Sports and Exercise, 35, 5, (2003); Marginson V., Eston R., The relationship between torque and joint angle during knee extension in boys and men, Journal of Sports Sciences, 19, 11, pp. 875-880, (2001); McGuigan M.R., Doyle T.L., Newton M., Edwards D.J., Nimphius S., Newton R.U., Eccentric utilization ratio: Effect of sport and phase of training, The Journal of Strength and Conditioning Research, 20, 4, pp. 992-995, (2006); McLachlan K.A., Murphy A.J., Watsford M.L., Rees S., The interday reliability of leg and ankle musculotendinous stiffness measures, Journal of Applied Biomechanics, 22, 4, pp. 296-304, (2006); Murphy A.J., Watsford M.L., Coutts A.J., Pine M.J., Reliability of a test of musculotendinous stiffness for the triceps-surae, Physical Therapy in Sport, 4, 4, pp. 175-181, (2003); Peng H.T., Changes in biomechanical properties during drop jumps of incremental height, The Journal of Strength and Conditioning Research, 25, 9, pp. 2510-2518, (2011); Pruyn E.C., Watsford M., Murphy A., The relationship between lowerbody stiffness and dynamic performance, Applied Physiology, Nutrition, and Metabolism, 39, 10, pp. 1144-1150, (2014); Pruyn E.C., Watsford M.L., Murphy A.J., Pine M.J., Spurrs R.W., Cameron M.L., Johnston R.J., Relationship between leg stiffness and lower body injuries in professional australian football, Journal of Sports Sciences, 30, 1, pp. 71-78, (2012); Spurrs R.W., Murphy A.J., Watsford M.L., The effect of plyometric training on distance running performance, European Journal of Applied Physiology, 89, 1, pp. 1-7, (2003); Walshe A.D., Wilson G.J., The influence of musculotendinous stiffness on drop jump performance, Canadian Journal of Applied Physiology, 22, 2, pp. 117-132, (1997); Walshe A.D., Wilson G.J., Murphy A.J., The validity and reliability of a test of lower body musculotendinous stiffness, European Journal of Applied Physiology and Occupational Physiology, 73, 3-4, pp. 332-339, (1996); Wilson A., Lichtwark G., The anatomical arrangement of muscle and tendon enhances limb versatility and locomotor performance, Philosophical Transactions of the Royal Society B: Biological Sciences, 366, 1570, pp. 1540-1553, (2011); Wilson G.J., Elliott B.C., Wood G.A., Stretch shorten cycle performance enhancement through flexibility training, Medicine and Science in Sports and Exercise, 24, 1, pp. 116-123, (1992); Wilson G.J., Murphy A.J., Pryor J.F., Musculotendinous stiffness: Its relationship to eccentric, isometric, and concentric performance, Journal of Applied Physiology, 76, 6, pp. 2714-2719, (1994); Wilson J.M., Flanagan E.P., The role of elastic energy in activities with high force and power requirements: A brief review, The Journal of Strength and Conditioning Research, 22, 5, pp. 1705-1715, (2008); Wu Y.K., Lien Y.H., Lin K.H., Shih T.F., Wang T.G., Wang H.K., Relationships between three potentiation effects of plyometric training and performance, Scandinavian Journal of Medicine and Science in Sports, 20, 1, pp. e80-e86, (2010); Young W., Benton D., John Pryor M., Resistance training for short sprints and maximum-speed sprints, Strength and Conditioning Journal, 23, 2, pp. 7-13, (2001); Zinder S.M., Padua D.A., Reliability, validity, and precision of a handheld myometer for assessing in vivo muscle stiffness, Journal of Sports Rehabilitation, 6, pp. 1-8, (2011)","J.T. Kalkhoven; Sport & Exercise Science group, Faculty of Health, University of Technology Sydney, Sydney, Moore Park precinct, PO Box 123, Broadway, 2007, Australia; email: Judd.kalkhoven@gmail.com","","Routledge","02640414","","JSSCE","28697691","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-85023183893" "Maly T.; Sugimoto D.; Izovska J.; Zahalka F.; Mala L.","Maly, Tomas (35102864300); Sugimoto, Dai (55260780400); Izovska, Jana (57021773600); Zahalka, Frantisek (36718411000); Mala, Lucia (35102823300)","35102864300; 55260780400; 57021773600; 36718411000; 35102823300","Effect of Muscular Strength, Asymmetries and Fatigue on Kicking Performance in Soccer Players","2018","International Journal of Sports Medicine","39","4","","297","303","6","33","10.1055/s-0043-123648","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044085894&doi=10.1055%2fs-0043-123648&partnerID=40&md5=b720a12e0d03377e6e7ab5ffe074d9a3","Charles University in Prague, Faculty of Physical Education and Sports, Jose Martiho 31, Prague 6 Veleslavin, 162 52, Czech Republic; Micheli Center for Sports Injury Prevention, Waltham, MA, United States; Division of Sports Medicine, Department of Orthopedics, Boston Children's Hospital, Boston, MA, United States; Harvard Medical School, Boston, MA, United States","Maly T., Charles University in Prague, Faculty of Physical Education and Sports, Jose Martiho 31, Prague 6 Veleslavin, 162 52, Czech Republic; Sugimoto D., Micheli Center for Sports Injury Prevention, Waltham, MA, United States, Division of Sports Medicine, Department of Orthopedics, Boston Children's Hospital, Boston, MA, United States, Harvard Medical School, Boston, MA, United States; Izovska J., Charles University in Prague, Faculty of Physical Education and Sports, Jose Martiho 31, Prague 6 Veleslavin, 162 52, Czech Republic; Zahalka F., Charles University in Prague, Faculty of Physical Education and Sports, Jose Martiho 31, Prague 6 Veleslavin, 162 52, Czech Republic; Mala L., Charles University in Prague, Faculty of Physical Education and Sports, Jose Martiho 31, Prague 6 Veleslavin, 162 52, Czech Republic","The aim of this study was to determine the effect of muscular strength, strength asymmetries, and fatigue on the speed and accuracy of an instep kick in soccer players. We measured ball velocity (BV) and kicking accuracy (KA) in the preferred (PL) and non-preferred leg (NPL) before (PRE) and after (POST) physical load in the PL. Maximum peak muscle torque of the knee extensors and flexors in the PL and NPL as well as ipsilateral knee flexors and knee extensors ratio (H:Q ratio) for both legs were assessed. BV was significantly decreased in POST physical load (5.82%, BV PRE =30.79±1.70 m·s -1, BV POST =29.00±1.70 m·s -1, t 19 =3.67, p=0.00, d=1.05). Instep kick accuracy after the physical load worsened by an average of 10% in the most accurate trials. Results revealed a significant decrease in instep kick accuracy after physical loading (KA PRE =2.74±0.70 m, KA POST =3.85±1.24 m, t 19 =-3.31, p=0.00, d=1.10). We found an insignificant correlation between H:Q ratio and KA in PRE test value, whereas a lower ipsilateral ratio (higher degree of strength asymmetry) in the POST physical load significantly correlated with KA in all angular velocities (r=-0.63 up to -0.67, p=0.00). © 2018 Georg Thieme Verlag. All rights reserved.","ball velocity; elite athletes; fatigue; isokinetic testing; soccer skills; strength imbalances","Athletic Performance; Biomechanical Phenomena; Humans; Knee; Male; Motor Skills; Muscle Fatigue; Muscle Strength; Soccer; Young Adult; athletic performance; biomechanics; human; knee; male; motor performance; muscle fatigue; muscle strength; physiology; soccer; young adult","Andersen T.B., Krustrup P., Bendiksen M., Orntoft C.O., Randers M.B., Pettersen S.A., Kicking velocity and effect on match performance when using a smaller, lighter ball in women's football, Int J Sports Med, 37, pp. 966-972, (2016); Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, J Sports Sci, 24, pp. 951-960, (2006); Bangsbo J., Energy demands in competitive soccer, J Sports Sci, 12, pp. 5-12, (1994); Bangsbo J., Iaia F.M., Krustrup P., The Yo-Yo intermittent recovery test - A useful tool for evaluation of physical performance in intermittent sports, Sports Med, 38, pp. 37-51, (2008); 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Ferraz R., Van Den Tillaar R., Marques M.C., The effect of fatigue on kicking velocity in soccer players, J Hum Kinet, 35, pp. 97-107, (2012); Garrett W.E., Califf J.C., Bassett F.H., Histological correlates of hamstring injuries, Am J Sports Med, 12, pp. 98-103, (1984); Gleeson N.P., Reilly T., Mercer T.H., Rakowski S., Rees D., Influence of acute endurance activity on leg neuromuscular and musculoskeletal performance, Med Sci Sports Exerc, 30, pp. 596-608, (1998); Greco C.C., Da Silva W.L., Camarda S.R.A., Denadai B.S., Fatigue and rapid hamstring/quadriceps force capacity in professional soccer players, Clin Physiol Funct Imaging, 33, pp. 18-23, (2013); Harriss D.J., Atkinson G., Ethical standards in sport and exercise science research: 2016 update, Int J Sports Med, 36, pp. 1121-1124, (2015); Hewett T.E., Myer G.D., Zazulak B.T., Hamstrings-to-quadriceps peak torque ratios diverge between sexes with increasing isokinetic angular velocity, J Sci Med Sport, 11, pp. 452-459, (2008); Hoskins W., Pollard H., The management of hamstring injury - Part 1: Issues in diagnosis, Man Ther, 10, pp. 96-107, (2005); Katis A., Giannadakis E., Kannas T., Amiridis I., Kellis E., Lees A., Mechanisms that influence accuracy of the soccer kick, J Electromyogr Kinesiol, 23, pp. 125-131, (2013); Katis A., Kellis E., Is soccer kick performance better after a ofakingo (cutting) maneuver task?, Sports Biomech, 10, pp. 35-45, (2011); Kawamoto R., Miyagi O., Ohashi J., Fukashiro S., Kinetic comparison of a side-foot soccer kick between experienced and inexperienced players, Sports Biomech, 6, pp. 187-198, (2007); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J Sports Sci Med, 6, pp. 154-165, (2007); Kellis E., Katis A., The relationship between isokinetic knee extension and flexion strength with soccer kick kinematics: An electromyographic evaluation, J Sports Med Phys Fitness, 47, pp. 385-394, (2007); Kellis E., Katis A., Vrabas I.S., Effects of an intermittent exercise fatigue protocol on biomechanics of soccer kick performance, Scand J Med Sci Sports, 16, pp. 334-344, (2006); 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McMorris T., Rayment T., Short-duration, high-intensity exercise and performance of a sports-specific skill: A preliminary study, Percept Mot Skills, 105, pp. 523-530, (2007); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, J Sports Sci, 21, pp. 519-528, (2003); Mohr M., Krustrup P., Bangsbo J., Fatigue in soccer: A brief review, J Sports Sci, 23, pp. 593-599, (2005); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, J Sports Sci, 24, pp. 529-541, (2006); Orloff H., Sumida B., Chow J., Habibi L., Fujino A., Kramer B., Ground reaction forces and kinematics of plant leg position during instep kicking in male and female collegiate soccer players, Sports Biomech, 7, pp. 238-247, (2008); Portney L.G., Watkins M.P., Foundations of Clinical Tesearch: Applications to Practice, (2009); Rampinini E., Coutts A.J., Castagna C., Sassi R., Impellizzeri F.M., Variation in top level soccer match performance, Int J Sports Med, 28, pp. 1018-1024, (2007); Sporis G., Vucetic V., Jukic I., How to evaluate full instep kick in soccer?, J Sports Sci Med, pp. 27-28, (2007); Stone K.J., Oliver J.L., The effect of 45 minutes of soccer-specific exercise on the performance of soccer skills, Int J Sport Physiol Perform, 4, pp. 163-175, (2009); Thomas J.R., Nelson J.K., Silverman S.J., Research Methods in Physical Activity, (2015); Zahalka F., Maly T., Mala L., Hrasky P., Hank M., Kicking performance differences in soccer players according to age and lower limb dominance, Med Sci Sports Exerc, 46, (2014)","T. Maly; Charles University in Prague, Faculty of Physical Education and Sports, Prague 6 Veleslavin, Jose Martiho 31, 162 52, Czech Republic; email: maly@ftvs.cuni.cz","","Georg Thieme Verlag","01724622","","IJSMD","29506307","English","Int. J. Sports Med.","Article","Final","","Scopus","2-s2.0-85044085894" "Mok K.-M.; Bahr R.; Krosshaug T.","Mok, K.-M. (37070831800); Bahr, R. (7102647460); Krosshaug, T. (55888189500)","37070831800; 7102647460; 55888189500","The effect of overhead target on the lower limb biomechanics during a vertical drop jump test in elite female athletes","2017","Scandinavian Journal of Medicine and Science in Sports","27","2","","161","166","5","27","10.1111/sms.12640","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84951820434&doi=10.1111%2fsms.12640&partnerID=40&md5=b10cf18eb873dab2e118adc8f8f2a71c","Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway","Mok K.-M., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Bahr R., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Krosshaug T., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway","The purpose of the study was to investigate the effect of an overhead target on the jump height and lower limb biomechanics in all three planes of motion in a vertical drop jump (VDJ) task among elite female handball and football (soccer) players. The hypothesis was that adding an overhead target to the VDJ task improves jump height, increases joint loading, and decreases frontal plane knee control. Five hundred and twenty-three female handball and football players (mean ± SD: 21 ± 4 years, 168 ± 6 cm, 65 ± 8 kg) completed the test. The overhead target increased jumping height by 5.8%. Furthermore, the overhead target led to statistically significant changes in many of the lower limb biomechanical variables examined. However, all the changes in kinematics and kinetics were clinically insignificant, as indicated by the small effect sizes. Strong to moderate positive Spearman's rank correlations were found between the two conditions. Therefore, an overhead target is unlikely to increase the range of responses in biomechanical variables in elite female handball and football athletes. © 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd","3D motion analysis; ACL injury; joint loadings; knee; risk screening task","Adolescent; Adult; Anterior Cruciate Ligament Injuries; Athletes; Athletic Performance; Biomechanical Phenomena; Cohort Studies; Female; Humans; Lower Extremity; Prospective Studies; Risk Factors; Soccer; Young Adult; athlete; biomechanics; effect size; female; football; height; human; human experiment; jumping; kinematics; knee; leg; motion; adolescent; adult; Anterior Cruciate Ligament Injuries; athlete; athletic performance; biomechanics; cohort analysis; lower limb; pathophysiology; physiology; prospective study; risk factor; soccer; young adult","Bell A.L., Pedersen D.R., Brand R.A., A comparison of the accuracy of several Hip Center Location Prediction Methods, J Biomech, 23, 6, pp. 617-621, (1990); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Boling M.C., Padua D.A., Marshall S.W., Guskiewicz K., Pyne S., Beutler A., A prospective investigation of biomechanical risk factors for patellofemoral pain syndrome the joint undertaking to monitor and prevent ACL injury (JUMP-ACL) cohort, Am J Sports Med, 37, 11, pp. 2108-2116, (2009); Butler R.J., Crowell H.P., Davis I.M., Lower extremity stiffness: implications for performance and injury, Clin Biomech, 18, 6, pp. 511-517, (2003); Campenella B., Mattacola C.G., Kimura I.F., Effect of visual feedback and verbal encouragement on concentric quadriceps and hamstrings peak torque of males and females, Isokinet Exerc Sci, 8, 1, pp. 1-6, (2000); Cohen J., A power primer, Psychol Bull, 112, 1, pp. 155-159, (1992); Davis R.B., Ounpuu S., Tyburski D., Gage J.R., A gait analysis data-collection and reduction technique, Hum Mov Sci, 10, 5, pp. 575-587, (1991); Delahunt E., Monaghan K., Caulfield B., Changes in lower limb kinematics, kinetics, and muscle activity in subjects with functional instability of the ankle joint during a single leg drop jump, J Orthop Res, 24, 10, pp. 1991-2000, (2006); Devita P., Skelly W.A., Effect of landing stiffness on joint kinetics and energetics in the lower-extremity, Med Sci Sports Exerc, 24, 1, pp. 108-115, (1992); Eng J.J., Winter D.A., Kinetic-analysis of the lower-limbs during walking – what information can be gained from a 3-dimensional model, J Biomech, 28, 6, pp. 753-758, (1995); Ford K.R., Myer G.D., Smith R.L., Byrnes R.N., Dopirak S.E., Hewett T.E., Effects of an overhead goal on a drop vertical jump maneuver, J Strength Cond Res, 19, 2, pp. 394-399, (2005); Goetschius J., Smith H.C., Vacek P.M., Holterman L.A., Shultz S.J., Tourville T.W., Slauterbeck J., Johnson R.J., Beynnon B.D., Application of a clinic-based algorithm as a tool to identify female athletes at risk for anterior cruciate ligament injury. 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Krosshaug; Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; email: tron.krosshaug@nih.no","","Blackwell Munksgaard","09057188","","SMSSE","26688032","English","Scand. J. Med. Sci. Sports","Article","Final","","Scopus","2-s2.0-84951820434" "Weidauer L.; Minett M.; Negus C.; Binkley T.; Vukovich M.; Wey H.; Specker B.","Weidauer, Lee (55260187800); Minett, Maggie (55780264400); Negus, Charles (16679324100); Binkley, Teresa (6603050137); Vukovich, Matt (7003263863); Wey, Howard (7004104427); Specker, Bonny (7006319685)","55260187800; 55780264400; 16679324100; 6603050137; 7003263863; 7004104427; 7006319685","Odd-impact loading results in increased cortical area and moments of inertia in collegiate athletes","2014","European Journal of Applied Physiology","114","7","","1429","1438","9","25","10.1007/s00421-014-2870-5","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902548078&doi=10.1007%2fs00421-014-2870-5&partnerID=40&md5=6779819e4ac2c13ef9220cd4860eb86f","Ethel Austin Martin Program in Human Nutrition, South Dakota State University, Brookings, SD 57007, Box 506, United States; Health and Nutritional Sciences Department, South Dakota State University, Brookings, SD 57007, Box 2203, United States; L-3 Applied Technologies Inc., San Diego, CA 92121, 10770 Wateridge Circle, United States","Weidauer L., Ethel Austin Martin Program in Human Nutrition, South Dakota State University, Brookings, SD 57007, Box 506, United States; Minett M., Ethel Austin Martin Program in Human Nutrition, South Dakota State University, Brookings, SD 57007, Box 506, United States; Negus C., L-3 Applied Technologies Inc., San Diego, CA 92121, 10770 Wateridge Circle, United States; Binkley T., Ethel Austin Martin Program in Human Nutrition, South Dakota State University, Brookings, SD 57007, Box 506, United States; Vukovich M., Health and Nutritional Sciences Department, South Dakota State University, Brookings, SD 57007, Box 2203, United States; Wey H., Ethel Austin Martin Program in Human Nutrition, South Dakota State University, Brookings, SD 57007, Box 506, United States; Specker B., Ethel Austin Martin Program in Human Nutrition, South Dakota State University, Brookings, SD 57007, Box 506, United States","Purpose: The purpose of this study was to investigate tibial changes in volumetric bone mineral density and geometry that take place in athletes from pre- to post-season. Methods: Female college athletes (n = 36) and ten controls recruited from the student population were included in the study. Participants had their left tibia scanned by pQCT at 4, 20, and 66 % of the overall length from the distal end before and after their competitive seasons. Subjects were divided into four groups: non-athlete (controls, n = 10), moderate-impact (cross-country runners, n = 13), high-impact (volleyball and basketball, n = 11), and odd-impact (soccer, n = 12). Results: Anterior-posterior and medial-lateral diameter increased at the 4 % site in control subjects. In the moderate-impact group, medial-lateral moment of inertia (MOI) increased by 1.2 ± 1.8 (mean ± SD) percent at the 20 % site. In high-impact group, anterior-posterior MOI increased by 1.6 ± 2.0 percent at the 66 % site. In odd-impact group, cortical area (1.4 ± 2.3 %) and cortical thickness (1.8 ± 2.8 %) increased at the 20 % site increased, as did the polar MOI (1.8 ± 2.2 %) at the 66 % site. Conclusions: Load-specific changes resulting in improved measures of bone strength take place in athletes during a competitive season. These changes may result in improved resistance to fractures and stress fractures. © 2014 Springer-Verlag Berlin Heidelberg.","Athletes; Bone; Female; PQCT; Stress fracture","Adaptation, Physiological; Athletes; Biomechanical Phenomena; Bone Density; Case-Control Studies; Competitive Behavior; Female; Humans; Students; Tibia; Time Factors; Tomography, X-Ray Computed; Weight-Bearing; adaptation; athlete; biomechanics; bone density; case control study; competitive behavior; computer assisted tomography; female; human; physiology; radiography; student; tibia; time; weight bearing","Beck T.J., Ruff C.B., Mourtada F.A., Shaffer R.A., Maxwell-Williams K., Kao G.L., Sartoris D.J., Brodine S., Dual-energy X-ray absorptiometry derived structural geometry for stress fracture prediction in male US marine corps recruits, J Bone Miner Res, 11, 5, pp. 645-653, (1996); Beck T.J., Ruff C.B., Shaffer R.A., Betsinger K., Trone D.W., Brodine S.K., Stress fracture in military recruits: Gender differences in muscle and bone susceptibility factors, Bone, 27, 3, pp. 437-444, (2000); Bennell K.L., Malcolm S.A., Thomas S.A., Wark J.D., Brukner P.D., The incidence and distribution of stress fractures in competitive track and field athletes. A 12-month prospective study, Am J Sports Med, 24, 2, pp. 211-217, (1996); Bolotin H.H., Sievanen H., Grashuis J.L., Kuiper J.W., Jarvinen T.L., Inaccuracies inherent in patient-specific dual-energy X-ray absorptiometry bone mineral density measurements: Comprehensive phantom-based evaluation, J Bone Miner Res, 16, 2, pp. 417-426, (2001); Bolotin H.H., Sievanen H., Grashuis J.L., Patient-specific DXA bone mineral density inaccuracies: Quantitative effects of nonuniform extraosseous fat distributions, J Bone Miner Res, 18, 6, pp. 1020-1027, (2003); Cervinka T., Rittweger J., Hyttinen J., Felsenberg D., Sievanen H., Anatomical sector analysis of load-bearing tibial bone structure during 90-day bed rest and 1-year recovery, Clin Physiol Funct Imaging, 31, 4, pp. 249-257, (2011); Crossley K., Bennell K.L., Wrigley T., Oakes B.W., Ground reaction forces, bone characteristics, and tibial stress fracture in male runners, Med Sci Sports Exerc, 31, 8, pp. 1088-1093, (1999); Evans R.K., Negus C.H., Centi A.J., Spiering B.A., Kraemer W.J., Nindl B.C., Peripheral QCT sector analysis reveals early exercise-induced increases in tibial bone mineral density, J Musculoskelet Neuronal Interact, 12, 3, pp. 155-164, (2012); Franklyn M., Oakes B., Field B., Wells P., Morgan D., Section modulus is the optimum geometric predictor for stress fractures and medial tibial stress syndrome in both male and female athletes, Am J Sports Med, 36, 6, pp. 1179-1189, (2008); Giladi M., Milgrom C., Simkin A., Danon Y., Stress fractures. Identifiable risk factors, Am J Sports Med, 19, 6, pp. 647-652, (1991); Haapasalo H., Kontulainen S., Sievanen H., Kannus P., Jarvinen M., Vuori I., Exercise-induced bone gain is due to enlargement in bone size without a change in volumetric bone density: A peripheral quantitative computed tomography study of the upper arms of male tennis players, Bone, 27, 3, pp. 351-357, (2000); Heinonen A., Oja P., Kannus P., Sievanen H., Manttari A., Vuori I., Bone mineral density of female athletes in different sports, Bone Miner, 23, 1, pp. 1-14, (1993); Heinonen A., Oja P., Kannus P., Sievanen H., Haapasalo H., Manttari A., Vuori I., Bone mineral density in female athletes representing sports with different loading characteristics of the skeleton, Bone, 17, 3, pp. 197-203, (1995); Klesges R.C., Ward K.D., Shelton M.L., Applegate W.B., Cantler E.D., Palmieri G.M., Harmon K., Davis J., Changes in bone mineral content in male athletes. Mechanisms of action and intervention effects, JAMA, 276, 3, pp. 226-230, (1996); Klodowski A., Rantalainen T., Mikkola A., Heinonen A., Sievanen H., Flexible multibody approach in forward dynamic simulation of locomotive strains in human skeleton with flexible lower body bones, Multibody Syst Dyn, 25, 4, pp. 395-409, (2011); Liu L., Maruno R., Mashimo T., Sanka K., Higuchi T., Hayashi K., Shirasaki Y., Mukai N., Saitoh S., Tokuyama K., Effects of physical training on cortical bone at midtibia assessed by peripheral QCT, J Appl Physiol, 95, 1, pp. 219-224, (2003); Lorentzon M., Mellstrom D., Ohlsson C., Association of amount of physical activity with cortical bone size and trabecular volumetric BMD in young adult men: The GOOD study, J Bone Miner Res, 20, 11, pp. 1936-1943, (2005); Ma H., Leskinen T., Alen M., Cheng S., Sipila S., Heinonen A., Kaprio J., Suominen H., Kujala U.M., Long-term leisure time physical activity and properties of bone: A twin study, J Bone Miner Res, 24, 8, pp. 1427-1433, (2009); Milgrom C., Giladi M., Simkin A., Rand N., Kedem R., Kashtan H., Stein M., An analysis of the biomechanical mechanism of tibial stress fractures among Israeli infantry recruits. A prospective study, Clin Orthop Relat Res, 231, pp. 216-221, (1988); Milgrom C., Giladi M., Simkin A., Rand N., Kedem R., Kashtan H., Stein M., Gomori M., The area moment of inertia of the tibia: A risk factor for stress fractures, J Biomech, 22, 11-12, pp. 1243-1248, (1989); Milgrom C., Radeva-Petrova D.R., Finestone A., Nyska M., Mendelson S., Benjuya N., Simkin A., Burr D., The effect of muscle fatigue on in vivo tibial strains, J Biomech, 40, 4, pp. 845-850, (2007); Myburgh K.H., Hutchins J., Fataar A.B., Hough S.F., Noakes T.D., Low bone density is an etiologic factor for stress fractures in athletes, Ann Intern Med, 113, 10, pp. 754-759, (1990); Nikander R., Sievanen H., Heinonen A., Kannus P., Femoral neck structure in adult female athletes subjected to different loading modalities, J Bone Miner Res, 20, 3, pp. 520-528, (2005); Nikander R., Sievanen H., Uusi-Rasi K., Heinonen A., Kannus P., Loading modalities and bone structures at nonweight-bearing upper extremity and weight-bearing lower extremity: A pQCT study of adult female athletes, Bone, 39, 4, pp. 886-894, (2006); Nikander R., Sievanen H., Heinonen A., Karstila T., Kannus P., Load-specific differences in the structure of femoral neck and tibia between world-class moguls skiers and slalom skiers, Scand J Med Sci Sports, 18, 2, pp. 145-153, (2008); Nikander R., Kannus P., Dastidar P., Hannula M., Harrison L., Cervinka T., Narra N.G., Aktour R., Arola T., Eskola H., Soimakallio S., Heinonen A., Hyttinen J., Sievanen H., Targeted exercises against hip fragility, Osteoporos Int, 20, 8, pp. 1321-1328, (2009); Peterman M.M., Hamel A.J., Cavanagh P.R., Piazza S.J., Sharkey N.A., In vitro modeling of human tibial strains during exercise in micro-gravity, J Biomech, 34, 5, pp. 693-698, (2001); Popp K.L., Hughes J.M., Smock A.J., Novotny S.A., Stovitz S.D., Koehler S.M., Petit M.A., Bone geometry, strength, and muscle size in runners with a history of stress fracture, Med Sci Sports Exerc, 41, 12, pp. 2145-2150, (2009); Pouilles J.M., Bernard J., Tremollieres F., Louvet J.P., Ribot C., Femoral bone density in young male adults with stress fractures, Bone, 10, 2, pp. 105-108, (1989); Rantalainen T., Nikander R., Daly R.M., Heinonen A., Sievanen H., Exercise loading and cortical bone distribution at the tibial shaft, Bone, 48, 4, pp. 786-791, (2011); Taaffe D.R., Robinson T.L., Snow C.M., Marcus R., High-impact exercise promotes bone gain in well-trained female athletes, J Bone Miner Res, 12, 2, pp. 255-260, (1997); Weidauer L.A., Eilers M.M., Binkley T.L., Vukovich M.D., Specker B.L., Effect of different collegiate sports on cortical bone in the tibia, J Musculoskelet Neuronal Interact, 12, 2, pp. 68-73, (2012)","L. Weidauer; Ethel Austin Martin Program in Human Nutrition, South Dakota State University, Brookings, SD 57007, Box 506, United States; email: Lee.Weidauer@sdstate.edu","","Springer Verlag","14396319","","EJAPF","24664495","English","Eur. J. Appl. Physiol.","Article","Final","","Scopus","2-s2.0-84902548078" "Lees A.; Owens L.","Lees, Adrian (7202900498); Owens, Liam (53264684100)","7202900498; 53264684100","Early visual cues associated with a directional place kick in soccer","2011","Sports Biomechanics","10","2","","125","134","9","28","10.1080/14763141.2011.569565","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79957813969&doi=10.1080%2f14763141.2011.569565&partnerID=40&md5=acdfbf0126d9f0a6435dcd5366cd1421","Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, L3 3AF, United Kingdom","Lees A., Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, L3 3AF, United Kingdom; Owens L., Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, L3 3AF, United Kingdom","The purpose of this paper was to establish postural cues in kicking that may be of use to goalkeepers. Eight male soccer players (age 20.5±1.1 yrs; height 1.78±0.053 m; mass 75.187±9.66 kg) performed three types of kick: a low side-foot kick to the left hand corner of the goal, a low side-foot kick straight ahead, and a low instep kick straight ahead. Kicks were recorded by an optoelectronic motion analysis system at 240 Hz. At kicking foot take-off (about 200 ms before ball contact) the variables which were significantly different and could act as cues were support foot progression angle, pelvis rotation, and kicking hip and ankle flexion. The support foot progression angle was considered to be the most valuable of these variables as its angle coincided with the direction of ball projection. The other variables were less clear in their interpretation and so less valuable for a goalkeeper to use for decision making. Cues appearing after support foot contact were thought unlikely to be of value to a goalkeeper in their decision making. These include kicking leg knee flexion angle, and support leg shank and thigh angles. © 2011 Taylor & Francis.","Biomechanics; Decision making; Penalty kick","Analysis of Variance; Athletic Performance; Biomechanics; Cues; Decision Making; Humans; Imaging, Three-Dimensional; Leg; Male; Soccer; Visual Perception; Young Adult; adult; analysis of variance; article; association; athletic performance; biomechanics; decision making; human; leg; male; physiology; sport; three dimensional imaging; vision","Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, Journal of Sports Sciences, 24, pp. 951-960, (2006); Dicks M., Button C., Davids K., Examination of gaze behaviours under in situ and video simulation task constraints reveals differences in information pickup for perception and action. Attention, Perception and Psychophysics, 72, pp. 706-720, (2010); Dicks M., Button C., Davids K., Individual differences in the visual control of intercepting a penalty kick in association football, Human Movement Science, 29, pp. 401-411, (2010); Franks I.M., Harvey T., Cues for goalkeepers: High-tech methods used to measure penalty shot response, Soccer Journal, 42, pp. 30-38, (1997); Khun W., Penalty-kick strategies for shooters and goalkeepers, Science and Football, pp. 489-492, (1988); Lees A., Barton G., Robinson M., The influence of Cardan rotation sequence on angular orientation data for the lower limb in the soccer kick, Journal of Sports Sciences, 28, pp. 445-450, (2010); Lees A., Nolan L., Three dimensional kinematic analysis of the instep kick under speed and accuracy conditions, Science and Football IV, pp. 16-21, (2002); Levanon J., Dapena J., Comparison of the kinematics of the full instep kick and pass kicks in soccer, Medicine and Science In Sport & Exercise, 30, pp. 917-927, (1998); Morya E., Bigatao H., Lees A., Ranvaud R., Evolving penalty kick strategies: World cup and club matches 2000-2002, Science and Football V. Proceedings of the Fifth World Congress of Science and Football, pp. 236-242, (2005); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science In Sport & Exercise, 34, pp. 2028-2036, (2002); Savelsbergh G.J.P., Williams A.M., van der Kamp J., Ward P., Visual search, anticipation and expertise in soccer goalkeepers, Journal of Sports Sciences, 20, pp. 279-287, (2002)","A. Lees; Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, L3 3AF, United Kingdom; email: a.lees@ljmu.ac.uk","","","17526116","","","21834396","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-79957813969" "Sandmo S.B.; McIntosh A.S.; Andersen T.E.; Koerte I.K.; Bahr R.","Sandmo, Stian Bahr (57207243288); McIntosh, Andrew S. (7202722659); Andersen, Thor Einar (7201524414); Koerte, Inga Katharina (23100559100); Bahr, Roald (7102647460)","57207243288; 7202722659; 7201524414; 23100559100; 7102647460","Evaluation of an In-Ear Sensor for Quantifying Head Impacts in Youth Soccer","2019","American Journal of Sports Medicine","47","4","","974","981","7","26","10.1177/0363546519826953","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062321106&doi=10.1177%2f0363546519826953&partnerID=40&md5=c43420add3454a09c8e4bcfa957a7944","Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway; Faculty of Medicine, University of Oslo, Oslo, Norway; School of Engineering and ACRISP, Edith Cowan University, Joondalup, Australia; Monash University Accident Research Centre, Monash University, Melbourne, Australia; McIntosh Consultancy and Research, Sydney, Australia; Department of Child and Adolescent Psychiatry, Psychosomatic, and Psychotherapy, Ludwig-Maximilian-University, Munich, Germany; Department of Psychiatry, Psychiatry Neuroimaging Laboratory, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States","Sandmo S.B., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway, Faculty of Medicine, University of Oslo, Oslo, Norway; McIntosh A.S., School of Engineering and ACRISP, Edith Cowan University, Joondalup, Australia, Monash University Accident Research Centre, Monash University, Melbourne, Australia, McIntosh Consultancy and Research, Sydney, Australia; Andersen T.E., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway; Koerte I.K., Department of Child and Adolescent Psychiatry, Psychosomatic, and Psychotherapy, Ludwig-Maximilian-University, Munich, Germany, Department of Psychiatry, Psychiatry Neuroimaging Laboratory, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States; Bahr R., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway","Background: Wearable sensor systems have the potential to quantify head kinematic responses of head impacts in soccer. However, on-field use of sensors (eg, accelerometers) remains challenging, owing to poor coupling to the head and difficulties discriminating low-severity direct head impacts from inertial loading of the head from human movements, such as jumping and landing. Purpose: To test the validity of an in-ear sensor for quantifying head impacts in youth soccer. Study Design: Descriptive laboratory study. Methods: First, the sensor was mounted to a Hybrid III headform and impacted with a linear impactor or a soccer ball. Peak linear acceleration (PLA), peak rotational acceleration (PRA), and peak rotational velocity (PRV) were obtained from both systems; random and systematic errors were calculated with Hybrid III as reference. Then, 6 youth soccer players wore sensors and performed a structured training protocol, including heading and nonheading exercises; they also completed 2 regular soccer sessions. For each accelerative event recorded, PLA, PRA, and PRV outputs were compared with video recordings. Receiver operating characteristic curves were used to determine the sensor’s discriminatory capacity in both on-field settings, establishing cutoff values for predicting outcomes. Results: For the laboratory tests, the random error was 11% for PLA, 20% for PRA, and 5% for PRV; the systematic error was 11%, 19%, and 5%, respectively. For the structured training protocol, heading events resulted in higher absolute values (PLA = 15.6g± 11.8g) than nonheading events (PLA = 4.6g± 1.2g); the area under the curve was 0.98 for PLA. In regular training sessions, the area under the curve was >0.99 for PLA. A 9g cutoff value yielded a positive predictive value of 100% in the structured training protocol versus 65% in the regular soccer sessions. Conclusion: The in-ear sensor displayed considerable random error and substantially overestimated head impact exposure. Despite the sensor’s excellent on-field accuracy for discriminating headings from other accelerative events in youth soccer, absolute values must be interpreted with caution, and there is a need for secondary means of verification (eg, video analysis) in real-life settings. Clinical Relevance: Wearable sensor systems can potentially provide valuable insights into head impact exposures in contact sports, but their limitations require careful consideration. © 2019 The Author(s).","accelerometer; repetitive; soccer; subconcussive; TBI; wearable","Accelerometry; Adolescent; Biomechanical Phenomena; Ear; Head; Humans; Male; Soccer; Video Recording; Wearable Electronic Devices; accelerometry; adolescent; biomechanics; devices; ear; electronic device; head; human; male; physiology; soccer; videorecording","Brennan J.H., Mitra B., Synnot A., Et al., Accelerometers for the assessment of concussion in male athletes: a systematic review and meta-analysis, Sports Med, 47, 3, pp. 469-478, (2017); Cortes N., Lincoln A.E., Myer G.D., Et al., Video analysis verification of head impact events measured by wearable sensors, Am J Sports Med, 45, 10, pp. 2379-2387, (2017); Cummiskey B., Schiffmiller D., Talavage, Et al., Reliability and accuracy of helmet-mounted and head-mounted devices used to measure head accelerations, Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 231, 2, pp. 144-153, (2017); Koerte I.K., Ertl-Wagner B., Reiser M., Zafonte R., Shenton M.E., White matter integrity in the brains of professional soccer players without a symptomatic concussion, JAMA, 308, 18, pp. 1859-1861, (2012); Koerte I.K., Lin A.P., Muehlmann M., Et al., Altered neurochemistry in former professional soccer players without a history of concussion, J Neurotrauma, 32, 17, pp. 1287-1293, (2015); Koerte I.K., Mayinger M., Muehlmann M., Et al., Cortical thinning in former professional soccer players, Brain Imaging Behav, 10, 3, pp. 792-798, (2016); Koerte I.K., Nichols E., Tripodis Y., Et al., Impaired cognitive performance in youth athletes exposed to repetitive head impacts, J Neurotrauma, 34, 16, pp. 2389-2395, (2017); Lamond L.C., Caccese J.B., Buckley T.A., Glutting J., Kaminski T.W., Linear acceleration in direct head contact across impact type, player position, and playing scenario in collegiate women’s soccer players, J Athl Train; Lipton M.L., Kim N., Zimmerman M.E., Et al., Soccer heading is associated with white matter microstructural and cognitive abnormalities, Radiology, 268, 3, pp. 850-857, (2013); McIntosh A.S., Patton D.A., Frechede B., Pierre P.A., Ferry E., Barthels T., The biomechanics of concussion in unhelmeted football players in Australia: a case-control study, BMJ Open, 4, 5, (2014); Nevins D., Smith L., Kensrud J., Laboratory evaluation of wireless head impact sensor, Procedia Eng, 112, pp. 175-179, (2015); O'Connor K.L., Rowson S., Duma S.M., Broglio S.P., Head-impact-measurement devices: a systematic review, J Athl Train, 52, 3, pp. 206-227, (2017); Patton D.A., A review of instrumented equipment to investigate head impacts in sport, Appl Bionics Biomech, 2016, pp. 1-16, (2016); Press J.N., Rowson S., Quantifying head impact exposure in collegiate women’s soccer, Clin J Sport Med, 27, 2, pp. 104-110, (2017); Instrumentation for Impact Test—Part 1—Electronic Instrumentation. 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Part 1: development of biomechanical methods to investigate head response, Br J Sports Med, 39, pp. i10-i25, (2005); Siegmund G.P., Guskiewicz K.M., Marshall S.W., DeMarco A.L., Bonin S.J., Laboratory validation of two wearable sensor systems for measuring head impact severity in football players, Ann Biomed Eng, 44, 4, pp. 1257-1274, (2016); Tyson A.M., Duma S.M., Rowson S., Laboratory evaluation of low-cost wearable sensors for measuring head impacts in sports, J Appl Biomech, 34, 4, pp. 320-326, (2018); Wu L.C., Nangia V., Bui K., Et al., In vivo evaluation of wearable head impact sensors, Ann Biomed Eng, 44, 4, pp. 1234-1245, (2016); Zhang L., Yang K.H., King A.I., A proposed injury threshold for mild traumatic brain injury, J Biomech Eng, 126, 2, pp. 226-236, (2004); Zhang M.R., Red S.D., Lin A.H., Patel S.S., Sereno A.B., Evidence of cognitive dysfunction after soccer playing with ball heading using a novel tablet-based approach, PLoS One, 8, 2, (2013)","S.B. Sandmo; Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway; email: s.b.sandmo@nih.no","","SAGE Publications Inc.","03635465","","AJSMD","30802147","English","Am. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85062321106" "Nilstad A.; Krosshaug T.; Mok K.-M.; Bahr R.; Andersen T.E.","Nilstad, Agnethe (36473805800); Krosshaug, Tron (55888189500); Mok, Kam-Ming (37070831800); Bahr, Roald (7102647460); Andersen, Thor Einar (7201524414)","36473805800; 55888189500; 37070831800; 7102647460; 7201524414","Association between anatomical characteristics, knee laxity, muscle strength, and peak knee valgus during vertical drop-jump landings","2015","Journal of Orthopaedic and Sports Physical Therapy","45","12","","998","1005","7","25","10.2519/jospt.2015.5612","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84948695364&doi=10.2519%2fjospt.2015.5612&partnerID=40&md5=f0fab5837939d60997f2bf9a5db2a869","Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PB 4014 Ullevål Stadion, Oslo, N-0806, Norway","Nilstad A., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PB 4014 Ullevål Stadion, Oslo, N-0806, Norway; Krosshaug T., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PB 4014 Ullevål Stadion, Oslo, N-0806, Norway; Mok K.-M., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PB 4014 Ullevål Stadion, Oslo, N-0806, Norway; Bahr R., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PB 4014 Ullevål Stadion, Oslo, N-0806, Norway; Andersen T.E., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PB 4014 Ullevål Stadion, Oslo, N-0806, Norway","STUDY DESIGN: Controlled laboratory study; cross-sectional. OBJECTIVES: To investigate the relationship among anatomical variables, knee laxity, muscle strength, and peak knee valgus angles during a vertical drop-jump landing task. BACKGROUND: Excessive knee valgus has been associated with anterior cruciate ligament injury in females; however, the influence of anatomical characteristics, knee laxity, and muscle strength on frontal plane knee motion is not completely understood. METHODS: Norwegian elite female soccer players (n = 279; mean ± SD age, 21 ± 4 years; height, 167 ± 6 cm; body mass, 63 ± 7 kg) were evaluated from 2009 through 2012. The evaluation included 3-D motion analysis of a vertical drop jump, anatomical measures (height, static knee valgus, leg length, and static foot posture), knee laxity, and muscle strength (quadriceps, hamstrings, and hip abductors). Multiple linear regression analyses were used to investigate the relationships among anatomical characteristics, knee laxity, muscle strength, and peak knee valgus angles. RESULTS: Anatomical characteristics explained 11% of the variance in peak knee valgus angles (P<.001), with height and static knee valgus being significant predictors. CONCLUSION: Greater body height and static knee valgus were associated with greater peak knee valgus angles during a vertical drop-jump landing task. However, these variables only explained 11% of the variance in peak knee valgus. © 2015 Journal of Orthopaedic & Sports Physical Therapy®. All rights reserved.","Anterior cruciate ligament; Biomechanics; Female; Football; Screening; Soccer","Adolescent; Anterior Cruciate Ligament; Biomechanical Phenomena; Body Height; Cross-Sectional Studies; Female; Humans; Joint Instability; Knee Injuries; Knee Joint; Muscle Strength; Plyometric Exercise; Risk Factors; Young Adult; adult; athlete; body height; body posture; female; foot; hamstring; hip; human; knee; leg length; major clinical study; motion; multiple linear regression analysis; muscle strength; quadriceps femoris muscle; adolescent; anatomy and histology; anterior cruciate ligament; biomechanics; clinical trial; cross-sectional study; injuries; joint instability; knee; knee injury; muscle strength; pathophysiology; physiology; plyometrics; risk factor; young adult","Altman D.G., Some common problems in medical research, Practical Statistics for Medical Research, pp. 396-439, (1991); Bahr R., ACL injuries - Problem solved?, Br J Sports Med., 43, pp. 313-314, (2009); Baldon R.M., Lobato D.F., Carvalho L.P., Santiago P.R., Benze B.G., Serrao F.V., Relationship between eccentric hip torque and lower-limb kinematics: Gender differences, J Appl Biomech., 27, pp. 223-232, (2011); Bandholm T., Thorborg K., Andersson E., Et al., Increased external hip-rotation strength relates to reduced dynamic knee control in females: Paradox or adaptation?, Scand J Med Sci Sports., 21, pp. e215-e221, (2011); Bell A.L., Pedersen D.R., Brand R.A., A comparison of the accuracy of several hip center location prediction methods, J Biomech., 23, pp. 617-621, (1990); Benoit D.L., Ramsey D.K., Lamontagne M., Xu L., Wretenberg P., Renstrom P., Effect of skin movement artifact on knee kinematics during gait and cutting motions measured in vivo, Gait Posture., 24, pp. 152-164, (2006); Berry J., Kramer K., Binkley J., Et al., Error estimates in novice and expert raters for the KT-1000 arthrometer, J Orthop Sports Phys Ther., 29, pp. 49-55, (1999); Brosky J.A., Nitz A.J., Malone T.R., Caborn D.N., Rayens M.K., Intrarater reliability of selected clinical outcome measures following anterior cruciate ligament reconstruction, J Orthop Sports Phys Ther., 29, pp. 39-48, (1999); Cashman G.E., The effect of weak hip abductors or external rotators on knee valgus kinematics in healthy subjects: A systematic review, J Sport Rehabil., 21, pp. 273-284, (2012); Chiari L., Della Croce U., Leardini A., Cappozzo A., Human movement analysis using stereophotogrammetry, Part 2: Instrumental Errors. 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Nilstad; Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, PB 4014 Ullevål Stadion, N-0806, Norway; email: agnethe.nilstad@nih.no","","Movement Science Media","01906011","","JOSPD","26381485","English","","Article","Final","","Scopus","2-s2.0-84948695364" "Jones P.A.; Herrington L.C.; Graham-Smith P.","Jones, Paul A. (55308526600); Herrington, Lee C. (7004230643); Graham-Smith, Philip (23992390400)","55308526600; 7004230643; 23992390400","Technique determinants of knee abduction moments during pivoting in female soccer players","2016","Clinical Biomechanics","31","","","107","112","5","36","10.1016/j.clinbiomech.2015.09.012","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959569736&doi=10.1016%2fj.clinbiomech.2015.09.012&partnerID=40&md5=c752969b9d7cccd97c7e2990fbbecaa6","University of Salford, Allerton Building, Frederick Road Campus, Salford, Greater Manchester, M6 6PU, United Kingdom; Aspire Academy, P.O. BOX 22287, Doha, Qatar","Jones P.A., University of Salford, Allerton Building, Frederick Road Campus, Salford, Greater Manchester, M6 6PU, United Kingdom; Herrington L.C., University of Salford, Allerton Building, Frederick Road Campus, Salford, Greater Manchester, M6 6PU, United Kingdom; Graham-Smith P., University of Salford, Allerton Building, Frederick Road Campus, Salford, Greater Manchester, M6 6PU, United Kingdom, Aspire Academy, P.O. BOX 22287, Doha, Qatar","Background No previous studies have investigated the optimal technique for pivoting with regard to reducing peak knee abduction moments and potential knee injury risk. The aim of this study was to investigate the relationships between technique characteristics and peak knee abduction moments during pivoting. Methods Twenty-seven female soccer players [mean (SD); age: 21 (3.8) years, height: 1.67 (0.07) m, and mass: 60.0 (7.2) kg] participated in the study. Three dimensional motion analyses of pivots on the right leg were performed using 10 Qualysis 'Pro reflex' infrared cameras (240 Hz). Ground reaction forces were collected from two AMTI force platforms (1200 Hz) embedded into the running track to examine penultimate and final contact. Pearson's correlation coefficients, co-efficients of determination and stepwise multiple regression were used to explore relationships between a range of technique parameters and peak knee abduction moments. Significance was set at P < 0.05. Findings Stepwise multiple regression found that initial foot progression and initial knee abduction angles together could explain 35% (30% adjusted) of the variation in peak knee abduction moments (F(2,26) = 6.499, P = 0.006). Interpretation The results of the present study suggest that initial-foot progression and knee abduction angles are potential technique factors to lower knee abduction moments during pivoting. © 2015 Elsevier Ltd.","180° turns; Anterior cruciate ligament; Injury; Knee abduction moment; Technique","Adult; Anterior Cruciate Ligament; Biomechanical Phenomena; Female; Foot; Hip Joint; Humans; Knee Injuries; Knee Joint; Movement; Range of Motion, Articular; Regression Analysis; Running; Soccer; Weight-Bearing; Young Adult; Biophysics; Correlation methods; Anterior cruciate ligament; Ground reaction forces; Injury; Pearson's correlation coefficients; Potential techniques; Stepwise multiple regression; Technique; Three-dimensional motion analysis; adult; age; Article; athlete; body height; body mass; female; ground reaction force; hip; human; knee; leg; pelvis; priority journal; trunk; anterior cruciate ligament; biomechanics; foot; injuries; joint characteristics and functions; knee; Knee Injuries; movement (physiology); physiology; regression analysis; running; soccer; weight bearing; young adult; Sports","Bell A.L., Brand R.A., Pedersen D.R., Prediction of hip-joint center location from external landmarks, Hum. 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Sports Med., 48, pp. 779-783, (2014); McLean S.G., Huang X., Van Den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clin. Biomech., 20, pp. 863-870, (2005); Mendiguchia J., Ford K.R., Quatman C.E., Alentorn-Geli E., Hewett T.E., Sex differences in proximal control of the knee joint, Sports Med., 41, pp. 541-557, (2011); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball. A systematic video analysis, Am. J. Sports Med., 32, pp. 1002-1012, (2004); Shin C.S., Chaudhari A.M., Andriacchi T.P., The effect of isolated valgus moments on ACL strain during single-leg landing: A simulation study, J. Biomech., 42, pp. 280-285, (2009); Shin C.S., Chaudhari A.M., Andriacchi T.P., Valgus plus internal rotation moments increase anterior cruciate ligament strain more than either alone, Med. Sci. Sports Exerc., 43, pp. 1484-1491, (2011); Sigward S.M., Powers C.M., Loading characteristics of females exhibiting excessive valgus moments during cutting, Clin. Biomech., 22, pp. 827-833, (2007); Vincent W.J., Statistics in Kinesiology, (1995); Winter D.A., Biomechanics and Motor Control of Human Movement, (2009); Yeadon M.R., Kato T., Kerwin D.G., Measuring running speed using photocells, J. Sports Sci., 17, pp. 249-257, (1999)","P.A. Jones; University of Salford, Allerton Building, Frederick Road Campus, Salford, Greater Manchester, M6 6PU, United Kingdom; email: P.A.Jones@salford.ac.uk","","Elsevier Ltd","02680033","","CLBIE","26432414","English","Clin. Biomech.","Article","Final","","Scopus","2-s2.0-84959569736" "Wilmes E.; De Ruiter C.J.; Bastiaansen B.J.C.; Van Zon J.F.J.A.; Vegter R.J.K.; Brink M.S.; Goedhart E.A.; Lemmink K.A.P.M.; Savelsbergh G.J.P.","Wilmes, Erik (57216648924); De Ruiter, Cornelis J. (7006550668); Bastiaansen, Bram J. C. (57216645857); Van Zon, Jasper F. J. A. (57216648062); Vegter, Riemer J. K. (55345744400); Brink, Michel S. (24469949200); Goedhart, Edwin A. (55311915500); Lemmink, Koen A. P. M. (6603663944); Savelsbergh, Geert J. P. (56250040000)","57216648924; 7006550668; 57216645857; 57216648062; 55345744400; 24469949200; 55311915500; 6603663944; 56250040000","Inertial sensor-based motion tracking in football with movement intensity quantification","2020","Sensors (Switzerland)","20","9","2527","","","","28","10.3390/s20092527","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85084185904&doi=10.3390%2fs20092527&partnerID=40&md5=7379e6a67fd608d544453704caad3c1c","Amsterdam Movement Sciences, Department of Human Movement SciencesVrije Universiteit Amsterdam, 1081BT, Amsterdam, Netherlands; Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, 9713AV, Groningen, Netherlands; FIFA Medical Centre of Excellence, Royal Netherlands Football Association, 3707HX, Zeist, Netherlands","Wilmes E., Amsterdam Movement Sciences, Department of Human Movement SciencesVrije Universiteit Amsterdam, 1081BT, Amsterdam, Netherlands; De Ruiter C.J., Amsterdam Movement Sciences, Department of Human Movement SciencesVrije Universiteit Amsterdam, 1081BT, Amsterdam, Netherlands; Bastiaansen B.J.C., Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, 9713AV, Groningen, Netherlands; Van Zon J.F.J.A., Amsterdam Movement Sciences, Department of Human Movement SciencesVrije Universiteit Amsterdam, 1081BT, Amsterdam, Netherlands; Vegter R.J.K., Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, 9713AV, Groningen, Netherlands; Brink M.S., Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, 9713AV, Groningen, Netherlands; Goedhart E.A., FIFA Medical Centre of Excellence, Royal Netherlands Football Association, 3707HX, Zeist, Netherlands; Lemmink K.A.P.M., Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, 9713AV, Groningen, Netherlands; Savelsbergh G.J.P., Amsterdam Movement Sciences, Department of Human Movement SciencesVrije Universiteit Amsterdam, 1081BT, Amsterdam, Netherlands","Inertial sensor-based measurements of lower body kinematics in football players may improve physical load estimates during training sessions and matches. However, the validity of inertial-based motion analysis systems is specific to both the type of movement and the intensity at which movements are executed. Importantly, such a system should be relatively simple, so it can easily be used in daily practice. This paper introduces an easy-to-use inertial-based motion analysis system and evaluates its validity using an optoelectronic motion analysis system as a gold standard. The system was validated in 11 football players for six different football specific movements that were executed at low, medium, and maximal intensity. Across all movements and intensities, the root mean square differences (means ± SD) for knee and hip flexion/extension angles were 5.3° ± 3.4° and 8.0° ± 3.5°, respectively, illustrating good validity with the gold standard. In addition, mean absolute flexion/extension angular velocities significantly differed between the three movement intensities. These results show the potential to use the inertial based motion analysis system in football practice to obtain lower body kinematics and to quantify movement intensity, which both may improve currently used physical load estimates of the players. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.","Exercise; Inertial measurement units; Lower body kinematics; Movement intensity; Physical load; Soccer","Biomechanical Phenomena; Biosensing Techniques; Humans; Knee Joint; Motion; Movement; Range of Motion, Articular; Soccer; Football; Inertial navigation systems; Kinematics; Physiological models; Football players; Gold standards; Inertial sensor; Measurements of; Motion analysis system; Physical loads; Root mean square differences; Training sessions; biomechanics; genetic procedures; human; joint characteristics and functions; knee; motion; movement (physiology); soccer; Motion tracking","Akenhead R., Nassis G.P., Training Load and Player Monitoring in High-Level Football: Current Practice and Perceptions, Int. J. Sports Physiol. Perf, 11, pp. 587-593, (2016); Aughey R.J., Applications of GPS Technologies to Field Sports, Int. J. Sports Physiol. Perf, 6, pp. 295-310, (2011); Vanrenterghem J., Nedergaard N.J., Robinson M.A., Drust B., Training Load Monitoring in Team Sports:  A Novel Framework Separating Physiological and Biomechanical Load-Adaptation Pathways, Sports Med, 47, pp. 2135-2142, (2017); Landry S.C., McKean K.A., Hubley-Kozey C.L., Stanish W.D., Deluzio K.J., Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated side-cut maneuver, Am. J. Sports Med, 35, pp. 1888-1900, (2007); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, J. Sports Sci, 28, pp. 805-817, (2010); Van Der Worp H., De Poel H.J., Diercks R.L., Van Den Akker-Scheek I., Zwerver J., Jumper’s knee or lander’s knee? A systematic review of the relation between jump biomechanics and patellar tendinopathy, Int. J. Sports Med, 35, pp. 714-722, (2014); Stevens T.G., De Ruiter C.J., Twisk J.W., Savelsbergh G.J., Beek P.J., Quantification of in-season training load relative to match load in professional Dutch Eredivisie football players, Sci. Med. Footb, 1, pp. 117-125, (2017); Ekstrand J., Hagglund M., Walden M., Epidemiology of muscle injuries in professional football (Soccer), Am. J. Sports Med, 39, pp. 1226-1232, (2011); Chambers R., Gabbett T.J., Cole M.H., Beard A., The Use of Wearable Microsensors to Quantify Sport-Specific Movements, Sports Med, 45, pp. 1065-1081, (2015); Cuesta-Vargas A.I., Galan-Mercant A., Williams J.M., The use of inertial sensors system for human motion analysis, Phys. Ther. Rev, 15, pp. 462-473, (2010); Madgwick S.O., Harrison A.J., Vaidyanathan A., Estimation of IMU and MARG orientation using a gradient descent algorithm, IEEE Int. Conf. Rehabil. Robot, 2011, (2011); Luinge H.J., Veltink P.H., Baten, C.T. Ambulatory measurement of arm orientation, J. Biomech, 40, pp. 78-85, (2007); Cooper G., Sheret I., McMillian L., Siliverdis K., Sha N., Hodgins D., Kenney L., Howard D., Inertial sensor-based knee flexion/extension angle estimation, J. Biomech, 42, pp. 2678-2685, (2009); Reenalda J., Maartens E., Homan L., Buurke J.H.J., Continuous three dimensional analysis of running mechanics during a marathon by means of inertial magnetic measurement units to objectify changes in running mechanics, J. Biomech, 49, pp. 3362-3367, (2016); Magalhaes F.A.D., Vannozzi G., Gatta G., Fantozzi S., Wearable inertial sensors in swimming motion analysis: A systematic review, J. Sports Sci, 33, pp. 732-745, (2015); Mooney R., Corley G., Godfrey A., Quinlan L.R., Olaighin G., Inertial sensor technology for elite swimming performance analysis: A systematic review, Sensors, 16, (2016); Picerno P., Cereatti A., Cappozzo A., Joint kinematics estimate using wearable inertial and magnetic sensing modules, Gait Posture, 28, pp. 588-595, (2008); Zhang J.-T., Novak A.C., Brouwer B., Li Q., Concurrent validation of Xsens MVN measurement of lower limb joint angular kinematics, Physiol. Meas, 34, (2013); Blair S., Duthie G., Robertson S., Hopkins W., Ball K., Concurrent validation of an inertial measurement system to quantify kicking biomechanics in four football codes, J. Biomech, 73, pp. 24-32, (2018); Lebel K., Boissy P., Nguyen H., Duval C., Inertial measurement systems for segments and joints kinematics assessment: Towards an understanding of the variations in sensors accuracy, Biomed. Eng. Online, 16, (2017); Wouda F.J., Giuberti M., Bellusci G., Maartens E., Reenalda J., Van Beijnum B.-., Veltink J., . Estimation of vertical ground reaction forces and sagittal knee kinematics during running using three inertial sensors, Front. Physiol, 9, (2018); Bush M., Barnes C., Archer D.T., Hogg B., Bradley P.S., Evolution of match performance parameters for various playing positions in the English Premier League, Hum. Mov. Sci, 39, pp. 1-11, (2015); Chumanov E.S., Heiderscheit B.C., Thelen D.G., The effect of speed and influence of individual muscles on hamstring mechanics during the swing phase of sprinting, J. 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Biomech, 28, pp. 1257-1261, (1995); Kuipers J.B., Quaternions and Rotation Sequences, 66, (1999); Plug-in-gait modelling instructions, 612 Motion Systems, pp. 19-22, (2002); Wu G., Siegler S., Allard P., Kirtley C., Leardini A., Rosenbaum D., Whittle M., D D'Lima D., Cristofolini L., Witte H., ISB recommendation on definitions of joint coordinate system of various joints for the reporting of human joint motion—Part I: Ankle, hip, and spine, J. Biomech, 35, pp. 543-548, (2002); Cappozzo A., Catani F., Della Croce U., Leardini A., Position and orientation in space of bones during movement: Anatomical frame definition and determination, Clin. Biomech, 10, pp. 171-178, (1995); Ferrari A., Cutti A.G., Cappello A., A new formulation of the coefficient of multiple correlation to assess the similarity of waveforms measured synchronously by different motion analysis protocols, Gait Posture, 31, pp. 540-542, (2010); Ferrari A., Cutti A.G., Garofalo P., Raggi M., Heijboer M., Cappello A., Davalli A., First in vivo assessment of “Outwalk”: A novel protocol for clinical gait analysis based on inertial and magnetic sensors, Med. Biol. Eng. Comput, 48, pp. 1-15, (2010); Favre J., Jolles B., Aissaoui R., Aminian K., Ambulatory measurement of 3D knee joint angle, J. Biomech, 41, pp. 1029-1035, (2008); Nuesch C., Roos E., Pagenstert G., Mundermann A., Measuring joint kinematics of treadmill walking and running: Comparison between an inertial sensor based system and a camera-based system, J. Biomech, 57, pp. 32-38, (2017); Bergamini E., Ligorio G., Summa A., Vannozzi G., Cappozzo A., Sabatini A., Estimating orientation using magnetic and inertial sensors and different sensor fusion approaches: Accuracy assessment in manual and locomotion tasks, Sensors, 14, pp. 18625-18649, (2014)","E. Wilmes; Amsterdam Movement Sciences, Department of Human Movement SciencesVrije Universiteit Amsterdam, 1081BT, Netherlands; email: e.wilmes@vu.nl","","MDPI AG","14248220","","","32365622","English","Sensors","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85084185904" "Kawamoto R.; Miyagi O.; Ohashi J.; Fukashiro S.","Kawamoto, Ryuji (7004518725); Miyagi, Osamu (22956133400); Ohashi, Jiro (22956184300); Fukashiro, Senshi (6603778377)","7004518725; 22956133400; 22956184300; 6603778377","Kinetic comparison of a side-foot soccer kick between experienced and inexperienced players","2007","Sports Biomechanics","6","2","","187","198","11","34","10.1080/14763140701324966","https://www.scopus.com/inward/record.uri?eid=2-s2.0-35848942364&doi=10.1080%2f14763140701324966&partnerID=40&md5=243b97b78c1746c87de773a3060c8b67","Department of Sports Science, Daito Bunka University, Saitama, Japan; Interfaculty Initiative in Information Studies, University of Tokyo, Tokyo, Japan","Kawamoto R., Department of Sports Science, Daito Bunka University, Saitama, Japan; Miyagi O., Department of Sports Science, Daito Bunka University, Saitama, Japan; Ohashi J., Department of Sports Science, Daito Bunka University, Saitama, Japan; Fukashiro S., Interfaculty Initiative in Information Studies, University of Tokyo, Tokyo, Japan","The aim of this study was to identify critical kinetic variables that lead to increased ball velocity during a side-foot passing kick in soccer. Seven experienced male soccer players and eight inexperienced players participated in the experiment. They were instructed to perform side-foot kicks along the ground with maximum effort with an eye on the target line. The joint angles, angular velocities, and torques of the kicking leg were determined based on the three-dimensional kinematic data. The mean ball speed of the experienced group (21.4 ± 1.5 m/ s) was significantly faster than that of the inexperienced group (16.0 ± 1.0 m/s; P < 0.001). The motions of the inexperienced players tended to be less dynamic than those of the experienced players. The most noticeable difference in the kinetics of the kick was found in the hip flexion torque throughout the back-swing phase until the leg-cocking phase. The mean peak value of the experienced group (168 ± 20 N • or ·m) was significantly greater than that of the inexperienced group (94 ± 17 N • or ·m; P < 0.001). To increase ball speed during a side-foot passing kick, the generation of hip-flexion torque during the earlier stage of kicking is critical.","Comparative study; Kinematics; Kinetics; Side-foot kick; Soccer Introduction","Adolescent; Adult; Biomechanics; Hip Joint; Humans; Imaging, Three-Dimensional; Kinetics; Leg; Male; Motion; Physical Fitness; Soccer; Torque; adolescent; adult; article; biomechanics; comparative study; fitness; hip; human; kinetics; leg; male; motion; physiology; sport; three dimensional imaging; torque","Ae M., Tang H., Yokoi T., Estimation of inertial properties on the body segments in Japanese athletes, Biomechanisms II: Form, Motion, and Function in Humans, pp. 23-33, (1992); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, pp. 293-299, (2002); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, pp. 917-927, (1998); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, pp. 2028-2036, (2002); Putnam C.A., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Medicine and Science in Sports and Exercise, 23, pp. 130-141, (1991); Roberts E.M., Zernicke R.F., Youm Y., Huang T.C., Kinetic parameters of kicking, Biomechanics IV, pp. 157-162, (1974); Robertson D.G.E., Mosher R.E., Work and power of the leg muscles in soccer kicking, Biomechanics IX-B, pp. 533-538, (1985); Schmidt R.A., Lee T.D., Motor Control and Learning: A Behavioral Emphasis, (2005); Vaughan C.L., Davis B.L., O'Connor J.C., Dynamics of Human Gait, (1992); Winter D.A., Biomechanics and Motor Control of Human Movement, (2005); Yamanaka K., Liang D.Y., Hughes M., Analysis of the playing patterns of the Japan national team in the 1994 World Cup qualifying match for Asia, Science and Football III, pp. 221-228, (1997)","","","","17526116","","","17892095","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-35848942364" "Beaulieu M.L.; Lamontagne M.; Xu L.","Beaulieu, Mélanie L. (25937111100); Lamontagne, Mario (57206397765); Xu, Lanyi (7404744843)","25937111100; 57206397765; 7404744843","Gender differences in time-frequency EMG analysis of unanticipated cutting maneuvers","2008","Medicine and Science in Sports and Exercise","40","10","","1795","1804","9","37","10.1249/MSS.0b013e31817b8e9e","https://www.scopus.com/inward/record.uri?eid=2-s2.0-58149277245&doi=10.1249%2fMSS.0b013e31817b8e9e&partnerID=40&md5=9ab00c9166897f18e862081853f7acf6","School of Human Kinetics, Canada; Department of Mechanical Engineering, University of Ottawa, Ottawa, ON, Canada; School of Biological Science, Lanzhou University, Lanzhou, Gansu Province, China; School of Human Kinetics, University of Ottawa, Montpetit Hall, Ottawa, ON KlN 6N5, Canada","Beaulieu M.L., School of Human Kinetics, Canada; Lamontagne M., School of Human Kinetics, Canada, Department of Mechanical Engineering, University of Ottawa, Ottawa, ON, Canada, School of Human Kinetics, University of Ottawa, Montpetit Hall, Ottawa, ON KlN 6N5, Canada; Xu L., School of Biological Science, Lanzhou University, Lanzhou, Gansu Province, China","Purpose: The purpose of this study is to compare the time-frequency characteristic, using nonlinearly scaled wavelets, of the EMG signal as well as the three-dimensional (3D) knee kinematics of female and male elite soccer players performing an unanticipated cutting maneuver. Methods: Fifteen female and 15 male elite soccer players performed several cutting maneuvers during which EMG of eight muscles of the leg and 3D kinematics of the knee were recorded. To create an unanticipated condition, the participants executed one of three tasks, which were signaled to them with an illuminated target board. Results: Male participants generally executed the unanticipated cutting maneuver with a quadriceps activation of higher frequency components. These gender differences were also found at initial ground contact (IC) for the vastii and biceps femoris (BF) muscles. These higher frequencies dominated the signal earlier in time for the BF and later for the tibialis anterior (TA) in women. Furthermore, women performed the cutting task with greater knee abduction than did the men. Conclusion: Female athletes adopted a different motor unit recruitment strategy that was particularly evident at, and near, IC resulting in lower frequency components in the EMG signal of the lateral hamstring. This strategy may play a role in explaining the gender bias in anterior cruciate ligament (ACL) injury rates. Gender differences in knee kinematics were also observed, exposing the female ACL to higher strain, which may be the result of differences in neuromuscular strategies to stabilize the knee joint. Copyright © 2008 by the American College of Sports Medicine.","Anterior cruciate ligament; Biomechanics; Injury; Neuromuscular strategy; Soccer; Wavelet","Biomechanics; Electromyography; Female; Humans; Knee; Male; Muscle, Skeletal; Sex Factors; Soccer; article; biceps brachii muscle; controlled study; electromyography; female; human; human experiment; kinematics; knee function; male; normal human; sex difference; sport; task performance; three dimensional imaging; tibialis anterior muscle; vastus lateralis muscle; biomechanics; comparative study; knee; physiology; skeletal muscle; sport","Arendt E.A., Agel J., Dick R., Anterior cruciate ligament injury patterns among collegiate men and women, J Athl Train, 34, pp. 86-92, (1999); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Med Sci Sports Exrerc, 35, 1, pp. 119-127, (2003); Bilodeau M., Cincera M., Gervais S., Et al., Changes in the electromyographic spectrum power distribution caused by a progressive increase in the force level, Eur J Appl Physiol Occup Physiol, 71, pp. 113-123, (1995); Bilodeau M., Schindler-Ivens S., Williams D.M., Chandran R., Sharma S.S., EMG frequency content changes with increasing force and during fatigue in the quadriceps femoris muscle of men and women, J Electromyogr Kinesiol, 13, pp. 83-92, (2003); Boyer K.A., Nigg B.M., Muscle activity in the leg is tuned in response to impact force characteristics, J Biomech, 37, pp. 1583-1588, (2004); Cerulli G., Benoit D.L., Lamontagne M., Caraffa A., Liti A., In vivo anterior cruciate ligament strain behaviour during a rapid deceleration movement: Case report, Knee Surg Sports Traumatol Arthrosc, 11, pp. 307-311, (2003); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (1988); Cowling E.J., Steele J.R., Is lower limb muscle synchrony during landing affected by gender? 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Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Med Sci Sports Exerc, 37, 1, pp. 124-129, (2005); Kanamori A., Woo S.L., Ma C.B., Et al., The forces in the anterior cruciate ligament and knee kinematics during a simulated pivot shift test: A human cadaveric study using robotic technology, Arthroscopy, 16, pp. 633-639, (2000); Kemozek T.W., Torry M.R., VAN Hoof H., Cowley H., Tanner S., Gender differences in frontal and sagittal plane biomechanics during drop landings, Med Sci Sports Exerc, 37, 6, pp. 1003-1012, (2005); Kupa E.J., Roy S.H., Kandarian S.C., De Luca C.J., Effects of muscle fiber type and size on EMG median frequency and conduction velocity, J Appl Physiol, 79, pp. 23-32, (1995); Lauer R.T., Stackhouse C., Shewokis P.A., Smith B.T., Orlin M., McCarthy J.J., Assessment of wavelet analysis of gait in children with typical development and cerebral palsy, J Biomech, 38, pp. 1351-1357, (2005); Li G., Rudy T.W., Sakane M., Kanamori A., Ma C.B., Woo S.L., The importance of quadriceps and hamstring muscle loading on knee kinematics and in-situ forces in the ACL, J Biomech, 32, pp. 395-400, (1999); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech (Bristol, Avon), 16, pp. 438-445, (2001); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finer-man G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, pp. 930-935, (1995); Masuda K., Masuda T., Sadoyama T., Inaki M., Katsuta S., Changes in surface EMG parameters during static and dynamic fatiguing contractions, J Electromyogr Kinesiol, 9, pp. 39-46, (1999); McHuch M.P., Tyler T.F., Browne M.G., Gleim G.W., Nicholas S.J., Electromyographic predictors of residual quadriceps muscle weakness after anterior cruciate ligament reconstruction, Am J Sports Med, 30, pp. 334-339, (2002); McLean S.G., Huang X., Su A., van den Bogart A.J., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clin Biomech (Bristol, Avon), 19, pp. 828-838, (2004); McLean S.G., Lipfert S.W., van den Bogart A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, 6, pp. 1008-1016, (2004); Miyasaka T., Matsumoto H., Suda Y., Otani T., Toyama Y., Coordination of the anterior and posterior cruciate ligaments in constraining the varus-valgus and internal-external rotatory instability of the knee, J Orthop Sci, 7, pp. 348-353, (2002); Olson O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med, 32, pp. 1002-1012, (2004); Pflum M.A., Shelburne K.B., Torry M.R., Decker M.J., Pandy M.G., Model prediction of anterior cruciate ligament force during drop-landings, Med Sci Sports Exerc, 36, 11, pp. 1949-1958, (2004); Pincivero D.M., Campy R.M., Salfetnikov Y., Bright A., Coelho A.J., Influence of contraction intensity, muscle, and gender on median frequency of the quadriceps femoris, J Appl Physiol, 90, pp. 804-810, (2001); Pollard C.D., Davis I.M., Hamill J., Influence of gender on hip and knee mechanics during a randomly cued cutting maneuver, Clin Biomech (Bristol, Avon), 19, pp. 1022-1031, (2004); Sell T.C., Ferris C.M., Abt J.P., Et al., The effect of direction and reaction on the neuromuscular and biomechanical characteristics of the knee during tasks that simulate the noncontact anterior cruciate ligament injury mechanism, Am J Sports Med, 34, pp. 43-54, (2006); Sigward S.M., Powers C.M., The influence of gender on knee kinematics, kinetics and muscle activation patterns during sidestep cutting, Clin Biomech (Bristol, Avon), 21, pp. 41-48, (2006); Simonsen E.B., Magnusson S.P., Bencke J., Et al., Can the hamstring muscles protect the anterior cruciate ligament during a side-cutting maneuver?, Scand J Med Sci Sports, 10, pp. 78-84, (2000); Solomonow M., Baten C., Smit J., Et al., Electromyogram power spectra frequencies associated with motor unit recruitment strategies, J Appl Physiol, 68, pp. 1177-1185, (1990); von Tscharner V., Intensity analysis in time-frequency space of surface myoelectric signals by wavelets of specified resolution, J Electromyogr Kinesiol, 10, pp. 433-445, (2000); von Tscharner V., Goepfert B., Gender dependent EMGs of runners resolved by time/frequency and principal pattern analysis, J Electromyogr Kinesiol, 13, pp. 253-272, (2003); von Tscharner V., Goepfert B., Nigg B.M., Changes in EMG signals for the muscle tibialis anterior while running barefoot or with shoes resolved by non-linearly scaled wavelets, J Biomech, 36, pp. 1169-1176, (2003); von Tscharner V., Gopfert B., VVirz D., Friederich N.F., Analysis of wavelet transformed electromyographic signals that were altered by wearing a knee brace, Biomed Tech (Berl), 49, pp. 43-48, (2004); Wakeling J.M., Rozitis A.I., Spectral properties of myoelectric signals from different motor units in the leg extensor muscles, J Exp Biol, 207, pp. 2519-2528, (2004); White K.K., Lee S.S., Cutuk A., Hargens A.R., Pedowitz R.A., EMG power spectra of intercollegiate athletes and anterior cruciate ligament injury risk in females, Med Sci Sports Exerc, 35, 3, pp. 371-376, (2003); Withrow T.J., Huston L.J., Wojtys E.M., Ashton-Miller J.A., The effect of an impulsive knee valgus moment on in vitro relative ACL strain during a simulated jump landing, Clin Biomech (Bristol, Avon), 21, pp. 977-983, (2006); Woltring H.J., A Fortran package for generalized, cross-validatory spline smoothing and differentiation, Adv Engng Software, 8, pp. 104-107, (1986)","M. Lamontagne; School of Human Kinetics, University of Ottawa, Montpetit Hall, Ottawa, ON KlN 6N5, Canada; email: mlamon@uottawa.ca","","","15300315","","MSCSB","18799990","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-58149277245" "Bentley J.A.; Ramanathan A.K.; Arnold G.P.; Wang W.; Abboud R.J.","Bentley, J.A. (46661030700); Ramanathan, A.K. (23973417800); Arnold, G.P. (15847749700); Wang, W. (57190753255); Abboud, R.J. (35617428000)","46661030700; 23973417800; 15847749700; 57190753255; 35617428000","Harmful cleats of football boots: A biomechanical evaluation","2011","Foot and Ankle Surgery","17","3","","140","144","4","32","10.1016/j.fas.2010.04.001","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79960567850&doi=10.1016%2fj.fas.2010.04.001&partnerID=40&md5=a78cab0c5a1ef21fd7617b1b5c92f2e8","Institute of Motion Analysis and Research (IMAR), Department of Orthopaedic and Trauma Surgery, TORT Centre, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD1 9SY Scotland, United Kingdom","Bentley J.A., Institute of Motion Analysis and Research (IMAR), Department of Orthopaedic and Trauma Surgery, TORT Centre, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD1 9SY Scotland, United Kingdom; Ramanathan A.K., Institute of Motion Analysis and Research (IMAR), Department of Orthopaedic and Trauma Surgery, TORT Centre, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD1 9SY Scotland, United Kingdom; Arnold G.P., Institute of Motion Analysis and Research (IMAR), Department of Orthopaedic and Trauma Surgery, TORT Centre, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD1 9SY Scotland, United Kingdom; Wang W., Institute of Motion Analysis and Research (IMAR), Department of Orthopaedic and Trauma Surgery, TORT Centre, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD1 9SY Scotland, United Kingdom; Abboud R.J., Institute of Motion Analysis and Research (IMAR), Department of Orthopaedic and Trauma Surgery, TORT Centre, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD1 9SY Scotland, United Kingdom","Background: Football players wear boots of varying cleat designs with some preferring the bladed cleats while others opting for the conventional studded cleats. The current study compares biomechanically the boots with differing cleat designs and their effect on feet, if any. Methods: Twenty-nine healthy male volunteers were recruited from amateur football teams. They were asked to perform three trials each of two activities: a straight run and a run cutting at a 60° angle wearing bladed and studded Adidas ®-F series boots on artificial turf. Plantar pressure values were recorded using the Pedar ®-X in-shoe pressure measuring device. Peak pressure and pressure-time integral were analysed over 11 clinically relevant areas under the foot. Results: While the in-shoe pressure and pressure-time integral were higher under the medial half of the foot with studded boots, they were higher under the lateral half of the foot with the bladed design. Conclusions: The studded boots can be considered safer as the pressure distribution across the foot and the pattern of centre of pressure progression mimicked the normal motif, whereas the bladed boots could potentially be deemed relatively more harmful due to the unnatural increased loading under the lateral half of the foot, predisposing the foot to injuries. © 2010 European Foot and Ankle Society.","Biomechanics; Cleat design; Football boots; Pedar ®-X; Plantar pressure","Biomechanics; Humans; Male; Shoes; Soccer; adult; article; biomechanics; cleat; controlled study; equipment design; football; human; human experiment; male; normal human; pressure measurement; priority journal; running; safety; shoe; task performance; volunteer; weight bearing","Hall M.J., Riou P., Football blades: a cause for concern, Br J Sports Med, 38, (2004); Eils E., Streyl M., Linnenbecker S., Thorwesten L., Volker K., Rosenbaum D., Characteristic plantar pressure distribution patterns during soccer-specific movements, Am J Sports Med, 32, 1, pp. 140-145, (2004); Lambson R.B., Barnhil B.S., Higgins R.W., Football cleat design and its effect on anterior cruciate ligament injuries. A three-year prospective study, Am J Sports Med, 24, 2, pp. 155-159, (1996); Livesay G.A., Reda D.R., Nauman E.A., Peak torque and rotational stiffness developed at the shoe-surface interface: the effect of shoe type and playing surface, Am J Sports Med, 34, 3, pp. 415-422, (2006); Majid F., Bader D.L., A biomechanical analysis of the plantar surface of soccer shoes, Proc Inst Mech Eng [H], 207, 2, pp. 93-101, (1993); Lees A., Nolan L., The biomechanics of soccer: a review, J Sports Sci, 16, 3, pp. 211-234, (1998); Cavanagh P.R., Lafortune M.A., Ground reaction forces in distance running, J Biomech, 13, 5, pp. 397-406, (1980); Keller T.S., Weisberger A.M., Ray J.L., Hasan S.S., Shiavi R.G., Relationship between vertical ground reaction force and speed during walking, slow jogging and running, Clin Biomech, 11, 5, pp. 253-259, (1996); Kernozek T.W., Zimmer K.A., Reliability and running speed effects of in-shoe loading measurements during slow treadmill running, Foot Ankle Int, 21, 9, pp. 749-752, (2000); Nigg B.M., Bahlsen H.A., Luethi S.M., Strokes S., The influence of running velocity and midsole hardness on external impact forces in heel-toe running, J Biomech, 20, 10, pp. 951-959, (1987); Novacheck T.F., Running injuries: a biomechanical approach, J Bone Joint Surg Am, 80, 8, pp. 1220-1233, (1998); Novacheck T.F., The biomechanics of running, Gait Posture, 7, 1, pp. 77-95, (1998); Whittle M.W., Gait analysis an introduction, (2004); Wong P.-L., Chamari K., Chaouachi A., Mao D.W., Wisloff U., Hong Y., Difference in plantar pressure between the preferred and non-preferred feet in four soccer-related movements, Br J Sports Med, 41, 2, pp. 84-92, (2007); Wong P.-L., Chamari K., Mao D.W., Wisloff U., Hong Y., Higher plantar pressure on the medial side in four soccer-related movements, Br J Sports Med, 41, 2, pp. 93-100, (2007); Ekstrand J., Gillquist J., Soccer injuries and their mechanisms: a prospective study, Med Sci Sports Exerc, 15, 3, pp. 267-270, (1983); Hawkins R.D., Fuller C.W., A prospective epidemiological study of injuries in four English professional football clubs, Br J Sports Med, 33, 3, pp. 196-203, (1999); Hawkins R.D., Hulse M.A., Wilkinson C., Hodson A., Gibson M., The association football medical research programme: an audit of injuries in professional football, Br J Sports Med, 35, 1, pp. 43-47, (2001); Le Gall F., Carling C., Reilly T., Vandewalle H., Church J., Rochcongar P., Incidence of injuries in elite French youth soccer players: a 10-season study, Am J Sports Med, 34, 6, pp. 928-938, (2006); Walden M., Hagglund M., Ekstrand J., Injuries in Swedish elite football - a prospective study on injury definitions, risk for injury pattern during 2001, Scand J Med Sci Sports, 15, 2, pp. 118-125, (2005); Bentley J., (2007); Ramanathan A.K., Kiran P., Arnold G.P., Wang W., Abboud R.J.; Queen R.M., Charnock B.L., Garrett W.E., Hardaker W.M., Sims E.L., Moorman C.T., A comparison of cleat types during two football-specific tasks on FieldTurf, Br J Sports Med, 42, pp. 278-284, (2008)","R.J. Abboud; Institute of Motion Analysis and Research (IMAR), Department of Orthopaedic and Trauma Surgery, TORT Centre, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD1 9SY Scotland, United Kingdom; email: r.j.abboud@dundee.ac.uk","","","14609584","","FASUF","21783074","English","Foot Ankle Surg.","Article","Final","","Scopus","2-s2.0-79960567850" "Mok K.-M.; Petushek E.; Krosshaug T.","Mok, Kam-Ming (37070831800); Petushek, Erich (35574378000); Krosshaug, Tron (55888189500)","37070831800; 35574378000; 55888189500","Reliability of knee biomechanics during a vertical drop jump in elite female athletes","2016","Gait and Posture","46","","","173","178","5","32","10.1016/j.gaitpost.2016.03.003","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961621647&doi=10.1016%2fj.gaitpost.2016.03.003&partnerID=40&md5=c18fa35759dbe16aed827b926e010672","Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Michigan State University, College of Human Medicine, East Lansing, MI, United States; Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, Hong Kong","Mok K.-M., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway, Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, Hong Kong; Petushek E., Michigan State University, College of Human Medicine, East Lansing, MI, United States; Krosshaug T., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway","The purpose of the study was to assess the within-session and between-session reliability of knee kinematics and kinetics in a vertical drop jump task among elite female handball and football athletes. Specifically, we aimed to quantify the within-session waveform consistency and between-session consistency of the subject ranking for a variety of knee kinematics and kinetics.Forty-one elite female handball and football (soccer) athletes were tested in two sessions. The reliability of three-dimensional knee biomechanical measurements was quantified by the intra-class correlation, Spearman's rank correlation, and typical error. All the selected discrete variables achieved excellent within-session reliability (ICC > 0.87). The typical error of valgus angles, internal rotation angles, and internal rotation moment was constant throughout the whole stance phase. For between-session reliability, the selected discrete variables achieved good to excellent reliability (ICC > 0.69), except peak internal rotation moment (ICC = 0.40). All between-session rank correlation coefficients ranged from 0.56 to 0.90. Most of the discrete variables achieved good to excellent reliability in both within-session and between-session analysis. Moreover, moderate to strong between-session consistency of subject rankings was found, implying that the measurements assessed during the vertical drop jump demonstrate sufficient reliability to be used in both single-session and multiple-session studies. © 2016 Elsevier B.V.","3D motion analysis; ACL injury; Knee kinematics and kinetics; Rank of individuals; Repeatability; Risk screening","Athletes; Biomechanical Phenomena; Exercise; Female; Humans; Knee Joint; Range of Motion, Articular; Reproducibility of Results; Sports; Young Adult; adult; Article; athlete; biomechanics; female; football; human; human experiment; joint mobility; jumping; kinematics; kinetics; knee function; priority journal; range of motion; soccer; task performance; waveform; athlete; biomechanics; exercise; joint characteristics and functions; knee; physiology; reproducibility; sport; young adult","Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes, Am. J. Sports Med., 33, pp. 492-501, (2005); Padua D.A., Marshall S.W., Boling M.C., Thigpen C.A., Garrett W.E., Beutler A.I., The Landing Error Scoring System (LESS) is a valid and reliable clinical assessment tool of jump-landing biomechanics The JUMP-ACL Study, Am. J. Sports Med., 37, pp. 1996-2002, (2009); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Biomechanics laboratory-based prediction algorithm to identify female athletes with high knee loads that increase risk of ACL injury, Br. J. Sports Med., 45, pp. 245-252, (2011); Noyes F.R., Butler D.L., Paulos L.E., Grood E.S., Intra-articular cruciate reconstruction I: Perspectives on graft strength, vascularization, and immediate motion after replacement, Clin. Orthop. Relat. 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Bull., 86, pp. 420-428, (1979); Steinwender G., Saraph V., Scheiber S., Zwick E.B., Uitz C., Hackl K., Intrasubject repeatability of gait analysis data in normal and spastic children, Clin. Biomech. (Bristol, Avon), 15, pp. 134-139, (2000); Roislien J., Skare O., Opheim A., Rennie L., Evaluating the properties of the coefficient of multiple correlation (CMC) for kinematic gait data, J. Biomech., 45, pp. 2014-2018, (2012); McGinley J.L., Baker R., Wolfe R., Morris M.E., The reliability of three-dimensional kinematic gait measurements: a systematic review, Gait Posture, 29, pp. 360-369, (2009); Atkinson G., Nevill A.M., Statistical methods for assessing measurement error (reliability) in variables relevant to sports medicine, Sports Med., 26, pp. 217-238, (1998); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med. Sci. Sports Exerc., 35, pp. 1745-1750, (2003); Renstrom P., Ljungqvist A., Arendt E., Beynnon B., Fukubayashi T., Garrett W., Et al., Non-contact ACL injuries in female athletes: an International Olympic Committee current concepts statement, Br. J. Sports Med., 42, pp. 394-412, (2008); Swenson D.M., Collins C.L., Best T.M., Flanigan D.C., Fields S.K., Comstock D., Epidemiology of knee injuries among U.S High School Athletes, 2005/2006-2010/2011, Med. Sci. Sports Exerc., 45, pp. 462-469, (2013); Shoukri M.M., Asyali M.H., Donner A., Sample size requirements for the design of reliability study: review and new results, Stat. Methods Med. Res., 13, pp. 251-271, (2004); Kristianslund E., Krosshaug T., Van Den Bogert A.J., Effect of low pass filtering on joint moments from inverse dynamics: implications for injury prevention, J. Biomech., 45, pp. 666-671, (2012); Woltring H.J., A Fortran package for generalized, cross-validatory spline smoothing and differentiation, Adv. Eng. Software, 8, pp. 104-113, (1986); Bell A.L., Pedersen D.R., Brand D., A comparison of the accuracy of several different hip center location prediction methods, J. Biomech., 23, pp. 617-621, (1990); Davis R.B.3., Ounpuu S., Tyburski D., Gage J.R., A gait analysis data collection and reduction technique, Hum. Mov. Sci., 10, pp. 575-578, (1991); Eng J.J., Winter D.A., Kinetic analysis of the lower limbs during walking: what information can be gained from a three-dimensional model, J. Biomech., 28, pp. 753-758, (1995); Soderkvist I., Wedin P.A., Determining the movements of the skeleton using well-configured markers, J. Biomech., 26, pp. 1473-1477, (1993); Yeadon M.R., The simulation of aerial movement--II. A mathematical inertia model of the human body, J. Biomech., 23, pp. 67-74, (1990); Zatsiorsky V., Seluyanov V., The mass and inertia characteristics of the main segments of the human body, pp. 1152-1159, (1983); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: application to the knee, J. Biomech. Eng., 105, pp. 136-144, (1983); Miranda D.L., Rainbow M.J., Crisco J.J., Fleming B.C., Kinematic differences between optical motion capture and biplanar videoradiography during a jump-cut maneuver, J. Biomech., 46, pp. 567-573, (2013); Hopkins W.G., Measures of reliability in sports medicine and science, Sports Med., 30, pp. 1-15, (2000); Fleiss J.L., The Design and Analysis of Clinical Experiments, pp. 1-27, (1986); Zou K.H., Tuncali K., Silverman S.G., Correlation and simple linear regression, Radiology, 227, pp. 617-622, (2003); Mok K.M., Kristianslund E.K., Krosshaug T., The effect of thigh marker placement on knee valgus angles in vertical drop jumps and sidestep cutting, J. Appl. Biomech., (2015); Wulf G., Dufek J.S., Increased jump height with an external focus due to enhanced lower extremity joint kinetics, J. Mot. Behav., 41, pp. 401-409, (2009); Chappell J.D., Limpisvasti O., Effect of a neuromuscular training program on the kinetics and kinematics of jumping tasks, Am. J. Sports Med., 36, pp. 1081-1086, (2008); Myer G.D., Bates N.A., DiCesare C.A., Foss K.D.B., Thomas S.M., Wordeman S.C., Et al., Reliability of 3-dimensional measures of single-leg drop landing across 3 institutions: implications for multicenter research for secondary ACL-injury prevention, J. Sport Rehabil., 24, pp. 198-209, (2015)","K.-M. Mok; Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; email: k.m.mok@nih.no","","Elsevier B.V.","09666362","","GAPOF","27131197","English","Gait Posture","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84961621647" "Greska E.K.; Cortes N.; Ringleb S.I.; Onate J.A.; Van Lunen B.L.","Greska, E.K. (39961575800); Cortes, N. (23033673100); Ringleb, S.I. (7801640194); Onate, J.A. (7004831141); Van Lunen, B.L. (6506227549)","39961575800; 23033673100; 7801640194; 7004831141; 6506227549","Biomechanical differences related to leg dominance were not found during a cutting task","2017","Scandinavian Journal of Medicine and Science in Sports","27","11","","1328","1336","8","29","10.1111/sms.12776","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84991657472&doi=10.1111%2fsms.12776&partnerID=40&md5=f06e95544812409de72378ffe81e1cec","Exercise Science & Community Health, University of West Florida, Pensacola, FL, United States; School of Recreation, Health, and Tourism, George Mason University, Manassas, VA, United States; Department of Mechanical & Aerospace Engineering, Old Dominion University, Norfolk, VA, United States; School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH, United States; School of Physical Therapy and Athletic Training, Old Dominion University, Norfolk, VA, United States","Greska E.K., Exercise Science & Community Health, University of West Florida, Pensacola, FL, United States; Cortes N., School of Recreation, Health, and Tourism, George Mason University, Manassas, VA, United States; Ringleb S.I., Department of Mechanical & Aerospace Engineering, Old Dominion University, Norfolk, VA, United States; Onate J.A., School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH, United States; Van Lunen B.L., School of Physical Therapy and Athletic Training, Old Dominion University, Norfolk, VA, United States","Previous studies have shown conflicting information regarding leg dominance as an etiological factor for the risk of anterior cruciate ligament (ACL) injuries. It remains unclear if lower extremity neuromechanical limb asymmetries exist in experienced athletes. The purpose of this study was to evaluate lower extremity neuromechanical effects of leg dominance in female collegiate soccer athletes during an unanticipated side-step cutting task. Twenty female collegiate soccer players completed an unanticipated side-step cutting task, using their dominant and non-dominant legs. Kinematic and kinetic data were collected to quantify joint angles and forces, with wireless electromyography (EMG) quantifying muscle activity. MANOVA's were conducted to determine the effect of leg dominance on hip and knee mechanics at and between pre-contact, initial contact, peak knee adduction moment, and peak stance periods. Dependent variables consisted of peak time occurrences, hip and knee rotations and moments, ground reaction force, EMG amplitudes, stance time, and approach velocity. No significant differences were found for any variables at or between the periods of interest. Collegiate female soccer athletes exhibit similar movement patterns between dominant and non-dominant legs while performing a side-step cutting task, suggesting that leg dominance does not adversely influence known biomechanical non-contact ACL risk factors. © 2016 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd","Bilateral differences; injury prevention; knee injury; neural activity; neuromechanics","Adolescent; Anterior Cruciate Ligament Injuries; Athletes; Athletic Injuries; Biomechanical Phenomena; Electromyography; Female; Functional Laterality; Hip Joint; Humans; Knee Joint; Movement; Risk Factors; Soccer; Video Recording; Young Adult; adolescent; anterior cruciate ligament injury; athlete; biomechanics; electromyography; female; hemispheric dominance; hip; human; injuries; knee; movement (physiology); physiology; risk factor; soccer; sport injury; videorecording; young adult","Agel J., Arendt E., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: a 13-year review, Am J Sports Med, 33, pp. 524-530, (2005); Arsenault A., Winter D., Marteniuk R., Bilateralism of EMG profiles in human locomotion, Am J Phys Med Rehabil, 65, pp. 1-16, (1986); Besier T., Lloyd D., Ackland T., Muscle activation strategies at the knee during running and cutting maneuvers, Med Sci Sports Exerc, 35, pp. 119-127, (2003); Beynnon B., Howe J., Pope M., Johnson R., Fleming B., The measurement of anterior cruciate ligament strain in vivo, Int Orthop, 16, pp. 1-12, (1992); Borotikar B., Newcomer R., Koppes R., Mclean S., Combined effects of fatigue and decision making on female lower limb landing postures: central and peripheral contributions to ACL injury risk, Clin Biomech, 23, pp. 81-92, (2008); Brophy R., Silvers H., Gonzales T., Mandelbaum B., Gender influences: the role of leg dominance in ACL injury among soccer players, Br J Sports Med, 44, pp. 694-697, (2010); Brown T., Palmieri-Smith R., McLean S., Sex and limb differences in hip and knee kinematics and kinetics during anticipated and unanticipated jump landings: implications for anterior cruciate ligament injury, Br J Sports Med, 43, pp. 1049-1056, (2009); Cerulli G., Benoit D., Lamontagne M., Caraffa A., Liti A., In vivo anterior cruciate ligament strain behaviour during a rapid deceleration movement: case report, Knee Surg Sports Traumatol Arthrosc, 11, pp. 307-311, (2003); Cohen J., Statistical power analysis for the behavioral sciences, (1988); Cortes N., Blount E., Ringleb S., Onate J., Soccer-specific video simulation for improving movement assessment, Sports Biomech, 10, pp. 22-34, (2011); Cowley H., Ford K., Myer G., Kernozek T., Hewett T., Differences in neuromuscular strategies between landing and cutting tasks in female basketball and soccer athletes, J Athl Train, 41, pp. 67-73, (2006); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, pp. 1745-1750, (2003); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Med Sci Sports Exerc, 37, pp. 124-129, (2005); Goerger B.M., Marshall S.W., Beutler A.I., Blackburn J.T., Wilckens J.H., Padua D.A., Anterior cruciate ligament injury alters preinjury lower extremity biomechanics in the injured and uninjured leg: the JUMP-ACL study, Br J Sports Med, 49, pp. 188-195, (2015); Gottlob C., Baker C., Pellissier J., Colvin L., Cost effectiveness of anterior cruciate ligament reconstruction in young adults, Clin Orthop Relat Res, 367, pp. 272-282, (1999); Greska E.K., Cortes N., Van Lunen B.L., Onate J.A., A feedback inclusive neuromuscular training program alters frontal plane kinematics, J Strength Cond Res, 26, pp. 1609-1619, (2012); Hermens H., Freriks B., Merletti R., Stegeman D., Blok J., Rau G., Disselhorst-Klug C., Hagg G., European recommendations for surface electromyography, (1999); Huda S., Rodriguez R., Lastra L., Warren M., Lacourse M., Cohen M., Cramer S., Cortical activation during foot movements: II Effect of movement rate and side, NeuroReport, 19, pp. 1573-1577, (2008); Kapreli E., Athanasopoulos S., Papathanasiou M., van Hecke P., Strimpakos N., Gouliamos A., Peeters R., Sunaert S., Lateralization of brain activity during lower limb joints movement. An fMRI study, NeuroImage, 32, pp. 1709-1721, (2006); Kernozek T., Ragan R., Estimation of anterior cruciate ligament tension from inverse dynamics data and electromyography in females during drop landing, Clin Biomech, 23, pp. 1279-1286, (2008); Koga H., Nakamae A., Shima Y., Iwasa J., Myklebust G., Engebretsen L., Bahr R., Krosshaug T., Mechanisms for noncontact anterior cruciate ligament injuries knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, pp. 2218-2225, (2010); Krosshaug T., Nakamae A., Boden B., Engebretsen L., Smith G., Slauterbeck J., Hewett T., Bahr R., Mechanisms of anterior cruciate ligament injury in basketball: video analysis of 39 cases, Am J Sports Med, 35, pp. 359-367, (2007); Landry S., Mckean K., Hubley-Kozey C., Stanish W., Deluzio K., Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated run and crosscut maneuver, Am J Sports Med, 35, pp. 1901-1911, (2007); Landry S., Mckean K., Hubley-Kozey C., Stanish W., Deluzio K., Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated side-cut maneuver, Am J Sports Med, 35, pp. 1888-1900, (2007); Landry S., Mckean K., Hubley-Kozey C., Stanish W., Deluzio K., Gender differences exist in neuromuscular control patterns during the pre-contact and early stance phase of an unanticipated side-cut and cross-cut maneuver in 15-18 years old adolescent soccer players, J Electromyogr Kinesiol, 19, pp. e370-e379, (2009); Lanshammar K., Ribom E.L., Differences in muscle strength in dominant and non-dominant leg in females aged 20-39 years–a population-based study, Phys Ther Sport., 12, pp. 76-79, (2011); Lu T.W., O'Connor J.J., Bone position estimation from skin marker co-ordinates using global optimisation with joint constraints, J Biomech, 32, pp. 129-134, (1999); Lucci S., Cortes N., Van Lunen B., Ringleb S., Onate J., Knee and hip sagittal and transverse plane changes after two fatigue protocols, J Sci Med Sport, 14, pp. 453-459, (2011); Luft A., Smith G., Forrester L., Whitall J., Macko R., Hauser T., Goldberg A., Hanley D., Comparing brain activation associated with isolated upper and lower limb movement across corresponding joints, Hum Brain Mapp, 17, pp. 131-140, (2002); Matava M., Freehill A., Grutzner S., Shannon W., Limb dominance as a potential etiologic factor in noncontact anterior cruciate ligament tears, J Knee Surg, 15, pp. 11-16, (2002); Mclean S., Felin R., Suedekum N., Calabrese G., Passerallo A., Joy S., Impact of fatigue on gender-based high-risk landing strategies, Med Sci Sports Exerc, 39, pp. 502-514, (2007); Mclean S., Huang X., Su A., van den Bogert A., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clin Biomech, 19, pp. 828-838, (2004); Negrete R., Schick E., Lower-limb dominance as a possible etiologic factor in noncontact anterior cruciate ligament tears, J Strength Cond Res, 21, pp. 270-273, (2007); Ounpuu S., Winter D., Bilateral electromyographical analysis of the lower limbs during walking in normal adults, Electroencephalogr Clin Neurophysiol, 72, pp. 429-438, (1989); Owen J., Campbell S., Falkner S., Bialkowski C., Ward A., Is there evidence that proprioception or balance training can prevent anterior cruciate ligament (ACL) injuries in athletes without previous ACL injury?, Phys Ther, 86, pp. 1436-1440, (2006); Rocca M., Filippi M., FMRI correlates of execution and observation of foot movements in left-handers, J Neurol Sci, 288, pp. 34-41, (2010); Schwartz M., Rozumalski A., A new method for estimating joint parameters from motion data, J Biomech, 38, pp. 107-116, (2005); Seyfarth A., Geyer H., Herr H., Swing-leg retraction: a simple control model for stable running, J Exp Biol, 206, pp. 2547-2555, (2003); Shin C., Chaudhari A., Andriacchi T., The influence of deceleration forces on ACL strain during single-leg landing: a simulation study, J Biomech, 40, pp. 1145-1152, (2007); Shultz S., Perrin D., Using surface electromyography to assess sex differences in neuromuscular response characteristics, J Athl Train, 34, pp. 165-176, (1999); Shultz S., Schmitz R., Nguyen A., Chaudhari A., Padua D., Mclean S., Sigward S., ACL Research Retreat V: an update on ACL injury risk and prevention, March 25-27, 2010, Greensboro, NC, J Athl Train, 45, pp. 499-508, (2010); Wright S.P., Adjusted p-values for simultaneous inference, Biometrics, 12, pp. 1005-1013, (1992); Yang J., Winter D., Surface EMG profiles during different walking cadences in humans, Electroencephalogr Clin Neurophysiol, 60, pp. 485-491, (1985)","E.K. Greska; Exercise Science & Community Health, University of West Florida, Pensacola, United States; email: egreska@uwf.edu","","Blackwell Munksgaard","09057188","","SMSSE","27747935","English","Scand. J. Med. Sci. Sports","Article","Final","","Scopus","2-s2.0-84991657472" "Yu B.; Kirkendall D.T.; Garrett Jr. W.E.","Yu, Bing (35301366400); Kirkendall, Donald T. (7003555207); Garrett Jr., William E. (7102162248)","35301366400; 7003555207; 7102162248","Anterior cruciate ligament injuries in female athletes: Anatomy, physiology, and motor control","2002","Sports Medicine and Arthroscopy Review","10","1","","58","68","10","29","10.1097/00132585-200210010-00009","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036051617&doi=10.1097%2f00132585-200210010-00009&partnerID=40&md5=88a599b25b4d6bd1efd0a89ad700dd3d","Division of Physical Therapy, Univ. of North Carolina Chapel Hill, Center for Human Movement Sciences, Chapel Hill, NC 27599-7135, CB 7135 Medical School Wing E., United States","Yu B., Division of Physical Therapy, Univ. of North Carolina Chapel Hill, Center for Human Movement Sciences, Chapel Hill, NC 27599-7135, CB 7135 Medical School Wing E., United States; Kirkendall D.T., Division of Physical Therapy, Univ. of North Carolina Chapel Hill, Center for Human Movement Sciences, Chapel Hill, NC 27599-7135, CB 7135 Medical School Wing E., United States; Garrett Jr. W.E., Division of Physical Therapy, Univ. of North Carolina Chapel Hill, Center for Human Movement Sciences, Chapel Hill, NC 27599-7135, CB 7135 Medical School Wing E., United States","Anterior cruciate ligament (ACL) injuries are common in sports. 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Therapy, 25, 3, pp. 171-184, (1997); Rozzi S.L., Lephart S.M., Fu F.H., Effects of muscular fatigue on knee joint laxity and neuromuscular characteristics of male and female athletes, Journal of Athletic Training, 24, 2, pp. 106-114, (1989); Wojtys E.M., Wylie B.B., Huston L.J., The effects of muscle fatigue on neuromuscular function and anterior tibial translation in healthy knees, Am. J. Sports Med, 24, 5, pp. 615-621, (1996); Sinner H.B., Effect of fatigue on joint position sense of the knee, J. Orthop. Research, 4, pp. 112-118, (1986); Chappell J.D., Yu B., Kirkendall D.T., Et al., The effects of lower extremity muscle fatigue on knee kinetics and kinematics in stop-jump tasks, Scand. J. Med. Sci. Sports, (2001)","B. Yu; Division of Physical Therapy, Univ. of North Carolina Chapel Hill, Center for Human Movement Sciences, Chapel Hill, NC 27599-7135, CB 7135 Medical School Wing E., United States; email: byu@med.unc.edu","","Lippincott Williams and Wilkins","10628592","","SMARC","","English","Sports Med. Arthroscopy Rev.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-0036051617" "Pickett W.; Streight S.; Simpson K.; Brison R.J.","Pickett, W. (7102833854); Streight, S. (6503955352); Simpson, K. (7202687038); Brison, R.J. (7003308835)","7102833854; 6503955352; 7202687038; 7003308835","Head injuries in youth soccer players presenting to the emergency department","2005","British Journal of Sports Medicine","39","4","","226","231","5","30","10.1136/bjsm.2004.013169","https://www.scopus.com/inward/record.uri?eid=2-s2.0-16444372758&doi=10.1136%2fbjsm.2004.013169&partnerID=40&md5=118697cc7c66afb0d76e1da5d49bceb3","Department of Emergency Medicine, Queen's University, c/o Kingston General Hospital, Kingston, Ont. K7L 2V7, Angada 3, Canada","Pickett W., Department of Emergency Medicine, Queen's University, c/o Kingston General Hospital, Kingston, Ont. K7L 2V7, Angada 3, Canada; Streight S.; Simpson K.; Brison R.J.","Background: There has been recent concern about neuropsychological injuries experienced by soccer players, particularly related to the purposeful heading of the ball. There are few population based analyses examining whether this is a legitimate concern. Objectives: To explore, using an existing injury surveillance system, one of many parts of this issue: acute injuries requiring emergency medical care experienced by youth soccer players. Methods: Descriptive epidemiological analysis of emergency department injury surveillance data (1996-2001) for youths aged 10-24 years from the Kingston sites of the Canadian Hospital Injury Reporting and Prevention Program. Results: A total of 1714 cases of soccer injury were identified (mean 286 a year); 235 (13.7%) involved diagnoses of injuries to the head. Leading mechanical factors resulting in head injury were contact with other players or persons (153/235; 65.1%) and balls (62/235; 26.4%). Heading was reported in 4/62 (6%) of the ball contact injuries, and attempted heading was reported in 15/153 (9.8%) of the cases involving person to person contact. Unspecified head to head contact between players was reported in 39 cases. Conclusions: Minor head injuries that result in emergency medical treatment do not happen often in youth soccer, and very few can be attributed to the purposeful heading of the ball. Player contact injuries appear to be a more important injury control concern. This study informs one of many aspects of the soccer heading injury debate.","","Adolescent; Adult; Child; Craniocerebral Trauma; Emergency Service, Hospital; Female; Humans; Male; Ontario; Patient Acceptance of Health Care; Population Surveillance; Risk Factors; Soccer; Sports Equipment; adolescent; adult; age distribution; article; biomechanics; Canada; emergency ward; female; head injury; human; incidence; major clinical study; male; risk assessment; school child; sport injury","Guskiewicz K.M., Marshall S.W., Broglio S.P., Et al., No evidence of impaired neurocognitive performance in collegiate soccer, Am J Sports Med, 30, pp. 157-162, (2002); Lobnes J.H., Garret W.E., Soccer in Sports Medicine: The School of the Aged Athlete, 2nd Ed., pp. 715-727, (1996); Nilsson S., Roaas A., Soccer injuries in adolescents, Am J Sports Med, 6, pp. 358-361, (1978); Powell J.W., Barber-Foss K.D., Traumatic brain injury in high school athletes, JAMA, 282, pp. 958-963, (1999); Janda D., Bir C., Cheney A., An evaluation of the cumulative concussive effect of soccer heading in the youth population, Inj Control Saf Promot, 9, pp. 25-31, (2002); Tysvaer A.T., Storli O.V., Soccer injuries to the brain. A neurologic and electroencephalographic study of active football players, Am J Sports Med, 17, pp. 573-578, (1989); Sortland O., Tysvaer A.T., Brain damage in former association football players. An evaluation by cerebral computed tomography, Neuroradiology, 31, pp. 44-48, (1989); Tysvaer A., Storli O., Association football injuries to the brain. A preliminary report, Br J Sports Med, 15, pp. 163-166, (1981); Tysvaer A.T., Storli O.V., Bachen I.N., Soccer injuries to the brain. A neurologic and electroencephalographic study of former players, Acta Neurol Scand, 80, pp. 151-156, (1989); Tysvaer A.T., Lochen E.A., Soccer injuries to the brain. A neuropyschologic study or former soccer players, Am J Sports Med, 19, pp. 56-60, (1991); Haglund Y., Eriksson E., Does amateur boxing lead to chronic brain damage? A review of some recent investigations, Am J Sports Med, 21, pp. 97-109, (1993); Kirkendall D.T., Garrett Jr. W.E., Heading in soccer: Integral skill or grounds for cognitive dysfunction?, J Athl Train, 36, pp. 328-333, (2001); Matser E.J., Kessels A.G., Lezak M.D., Et al., Neuropyschological impairment in amateur soccer players, JAMA, 282, pp. 971-973, (1999); Jordan S.E., Green G.A., Galanty H.L., Et al., Acute and chronic brain injury in United States National Team soccer players, Am J Sports Med, 24, pp. 205-210, (1996); Kirkendall D.T., Jordan S.E., Garrett W.E., Heading and head injuries in soccer, Sports Med, 31, pp. 369-386, (2001); Queen R.M., Weinhold P.S., Kirkendall D.T., Et al., Theoretical study of the effect of ball properties on impact force in soccer heading, Med Sci Sports Exerc, 35, pp. 2069-2076, (2003); Prabhu V.C., Bailes J.E., Chronic subdural hematoma complicating arachnoid cyst secondary to soccer-related head injury: Case report, Neurosurgery, 50, pp. 195-197, (2002); Mackenzie S.G., Pless I.B., CHIRPP: Canada's principal injury surveillance program. Canadian Hospitals Injury Reporting and Prevention Program, Inj Prev, 5, pp. 208-213, (1999); Canadian Hospitals Injury Reporting and Prevention Program Coding Manual, (1996); Coaching at the Grass Roots: It's Practice Time!; Broglio S.P., Ju Y., Broglio M.D., Sell T.C., The efficacy of soccer headgear, J Athl Train, 38, pp. 220-224, (2003); Barnes B.C., Cooper L., Kirkendall D.T., Et al., Concussion history in elite male and female soccer players, Am J Sports Med, 26, pp. 433-438, (1998); Boden B.P., Kirkendall D.T., Garrett W.E., Concussion incidence in elite college players, Am J Sports Med, 26, pp. 238-241, (1998); McCrory P.R., Brain injury and heading in soccer, BMJ, 327, pp. 351-352, (2003); Capao Filipe J.A., Fernandes V.L., Barros H., Et al., Soccer-related ocular injuries, Arch Ophthalmol, 121, pp. 687-694, (2003); Horn E.P., McDonald H.R., Johnson R.N., Et al., Soccer ball-related retinal injuries: A report of 13 cases, Retina, 20, pp. 604-609, (2000); Pickett W., Brison R.J., Mackenzie S.G., Et al., Youth injury data in the Canadian Hospitals Injury Reporting and Prevention Program: Do they represent the Canadian experience?, Inj Prev, 6, pp. 9-15, (2000); Downs D.S., Abwender D., Neuropsychological impairment in soccer athletes, J Sports Med Phys Fitness, 42, pp. 103-107, (2002); Matser J.T., Kessels A.G., Jordan B.D., Et al., Chronic traumatic brain injury in professional soccer players, Neurology, 51, pp. 791-796, (1998); Naunheim R.S., Standeven J., Richter C., Et al., Comparison of impact data in hockey, football and soccer, J Trauma, 48, pp. 938-941, (2000); Putukian M., Echemendia R.J., Mackin S., The acute neuropsychological effects of heading in soccer: A pilot study, Clin J Sport Med, 10, pp. 104-109, (2000)","","","","03063674","","BJSMD","15793093","English","Br. J. Sports Med.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-16444372758" "Mithoefer K.; Peterson L.; Saris D.B.F.; Mandelbaum B.R.","Mithoefer, Kai (7801503733); Peterson, Lars (56371168200); Saris, Daniel B.F. (6603349550); Mandelbaum, Bert R. (7004262150)","7801503733; 56371168200; 6603349550; 7004262150","Evolution and Current Role of Autologous Chondrocyte Implantation for Treatment of Articular Cartilage Defects in the Football (Soccer) Player","2012","Cartilage","3","1 SUPPL.","","31s","36s","5","21","10.1177/1947603511406532","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84872968561&doi=10.1177%2f1947603511406532&partnerID=40&md5=a915e18f7c1396ecd40efe9f864caa54","Harvard Vanguard Medical Associates, Harvard Medical School, Boston, MA, United States; Gothenburg Medical Center, Gothenburg, Sweden; University Medical Center, Utrecht, Netherlands; Santa Monica Orthopedic and Sports Medicine Foundation, Los Angeles, CA, United States","Mithoefer K., Harvard Vanguard Medical Associates, Harvard Medical School, Boston, MA, United States; Peterson L., Gothenburg Medical Center, Gothenburg, Sweden; Saris D.B.F., University Medical Center, Utrecht, Netherlands; Mandelbaum B.R., Santa Monica Orthopedic and Sports Medicine Foundation, Los Angeles, CA, United States","Background: Autologous chondrocyte implantation (ACI) continues to technically evolve, but how the technical innovations affect the ability to participate in high-impact sports such as football is unknown. Methods: Clinical studies describing athletes treated with first-, second-, or third-generation ACI techniques were reviewed. The technical developments of ACI were evaluated, and the results in athletes and specifically football (soccer) players were analyzed. Results: Football players reported 72% good to excellent results with significant overall improvement of knee function and activity scores. Return to football was 83% in competitive players but lower in recreational players. Eighty percent of players returned to the same competitive level after ACI, and 87% to 100% maintained their ability to play sports at 5 years postoperatively. Return to sport was better for younger, competitive players with shorter intervals between injury and ACI. New developments of the surgical technique and postoperative rehabilitation were able to reduce the limitations associated with first-generation ACI including invasiveness, graft hypertrophy, and particularly long postoperative rehabilitation. This allowed for faster return to sports like football without compromising the ability for continued competition over time. Conclusion: Articular cartilage repair in football players often allows for successful return to this high-impact sport with excellent durability. The continued evolution of this technique has improved initial shortcomings with important implications for both the professional and recreational athlete. © SAGE Publications 2012.","articular cartilage; autologous chondrocyte; cartilage repair; diagnosis; grafts; joint involved; knee; repair; sports injury; tissue","collagen; fibrin; gelatin; tissue scaffold; arthrotomy; article; articular cartilage; cartilage cell; cartilage injury; cartilage matrix; chondrocyte implantation; fibrosis; human; hypertrophy; knee function; Knee Injury and Osteoarthritis Outcome Score; minimally invasive procedure; posterior cruciate ligament reconstruction; scar formation; soccer; time to treatment; treatment duration; adult; arthroscopy; Article; articular cartilage; biomechanics; chondrocyte implant; football; nuclear magnetic resonance imaging; osteoarthritis; rehabilitation; sport injury","Drawer S., Fuller C.W., Propensity for osteoarthritis and lower limb joint pain in retired professional soccer players, Br J Sports Med, 35, pp. 402-408, (2001); Levy A.S., Lohnes J., Sculley S., LeCroy M., Garrett W., Chondral delamination of the knee in soccer players, Am J Sports Med, 24, pp. 634-639, (1996); Engstrom B., Forssblad M., Johansson C., Tornkvist H., Does a major knee injury definitely sideline an elite soccer player?, Am J Sports Med, 18, pp. 101-105, (1990); Felson D.T., Osteoarthritis: new insights. Part 1: the disease and its risk factors, Ann Intern Med, 133, pp. 635-646, (2000); Peterson L., Junge A., Chomiak J., Graf-Baumann T., Dvorak J., Incidence of football injuries and complaints in different age groups and skill-level groups, Am J Sports Med, 28, (2000); Roos H., Are there long-term sequelae from soccer?, Clin Sports Med, 17, pp. 819-883, (1998); Brittberg M., Lindahl A., Nilsson A., Ohlsson C., Isaksson O., Peterson L., Treatment of deep cartilage defects in the knee with autologous chondrocyte transplantation, N Engl J Med, 331, pp. 889-895, (1994); Peterson L., Vasiliadis H.S., Brittberg M., Lindahl A., Autologous chondrocyte implantation: a long-term follow-up, Am J Sports Med, 38, 6, pp. 1117-1124, (2010); Mithofer K., Peterson L., Mandelbaum B., Minas T., Articular cartilage repair in soccer players with autologous chondrocyte transplantation: functional outcome and return to competition, Am J Sports Med, 33, pp. 1639-1646, (2005); Mithofer K., Minas T., Peterson L., Yeon H., Micheli L.J., Functional outcome of articular cartilage repair in adolescent athletes, Am J Sports Med, 33, pp. 1147-1153, (2005); Kreuz P.C., Steinwachs M., Erggelet C., Lahm A., Krause S., Ossendorf C., Et al., Importance of sports in cartilage regeneration after autologous chondrocyte implantation, Am J Sports Med, 35, pp. 1261-1268, (2007); Saris D.B.F., Vanlauwe J., Victor J., Haspl M., Bohnsack M., Fortems Y., Et al., Characterized chondrocyte implantation results in better structural repair when treating symptomatic cartilage defects of the knee in a randomized controlled trial versus microfracture, Am J Sports Med, 36, 2, pp. 235-246, (2008); Saris D.B., Vanlauwe J., Victor J., Almqvist K.F., Verdonk R., Bellemans J., Et al., Treatment of symptomatic cartilage defects of the knee: characterized chondrocyte implantation results in better clinical outcome at 36 months in a randomized trial compared to microfracture, Am J Sports Med, 37 SUPPL., (2009); Saris D.B., New evidence from the 5-year clinical results of ChondroCelect versus microfracture; van Assche D., van Caspel D., Vanlauwe J., Bellemans J., Saris D.B., Luyten F.P., Staes F., Physical activity levels after characterized chondrocyte implantation versus microfracture in the knee and the relationship to objective functional outcome with 2-year follow-up, Am J Sports Med, 37, SUPPL. 1, (2009); Harris J.D., Siston R.A., Pan X., Flanigan D.C., Autologous chondrocyte implantation: a systematic review, J Bone Joint Surg Am, 92, 12, pp. 2220-2233, (2010); Brittberg M., Cell carriers as the next generation of cell therapy for cartilage repair: a review of the matrix-induced autologous chondrocyte implantation procedure, Am J Sports Med, 38, 6, pp. 1259-1271, (2010); Ossendorf C., Kaps C., Kreuz P.C., Burmester G.R., Sittinger M., Erggelet C., Treatment of posttraumatic and focal osteoarthritic cartilage defects of the knee with autologous polymer-based three-dimensional chondrocyte grafts: 2-year clinical results, Arthritis Res Ther, 9, 2, (2007); Kon E., Gobbi A., Filardo G., Delcogliano M., Zaffagini S., Marcacci M., Arthroscopic second-generation autologous chondrocyte implantation compared with microfracture for chondral lesions of the knee: prospective nonrandomized study at 5 years, Am J Sports Med, 37, pp. 33-41, (2009); Ferruzzi A., Buda R., Faldini C., Vannini F., DiCaprio F., Luciani D., Et al., Autologous chondrocyte implantation in the knee joint: open compared with arthroscopic technique, J Bone Joint Surg, 90, pp. 90-101, (2008); Hambly K., Bobic V., Wondrasch B., van Assche D., Marlovits S., Autologous chondrocyte implantation postoperative care and rehabilitation: science and practice, Am J Sports Med, 34, 6, pp. 1020-1038, (2006); della Villa S., Kon E., Filardo G., Ricci M., Vincentelli F., Delcogliano M., Marcacci M., Does intensive rehabilitation permit early return to sport without compromising the clinical outcome after arthroscopic autologous chondrocyte implantation in highly competitive athletes?, Am J Sports Med, 38, 1, pp. 68-77, (2010); Ebert J.R., Robertson W.B., Lloyd D.G., Zheng M.H., Wood D.J., Ackland T., Traditional vs accelerated approaches to post-operative rehabilitation following matrix-induced autologous chondrocyte implantation (MACI): comparison of clinical, biomechanical and radiographic outcomes, Osteoarthritis Cartilage, 16, 10, pp. 1131-1140, (2008); Kujala U.M., Kettunen J., Paananen H., Aalto T., Battie M.C., Impivaara O., Et al., Knee osteoarthritis in former runners, soccer players, weight lifters, and shooters. Arth Rheum, 38, pp. 539-546, (1995); Muckle D.S., Injuries in professional footballers, Br J Sports Med, 15, pp. 77-79, (1981); Jones D.G., Peterson L., Autologous chondrocyte implantation, Instr Course Lect, 56, pp. 429-445, (2007); Blevins F.T., Steadman J.R., Rodrigo J.J., Silliman J., Treatment of articular cartilage defects in athletes: an analysis of functional outcome and lesion appearance, Orthopedics, 21, pp. 747-752, (1998); Bjordahl J.M., Hannestad A.B., Strand T., Epidemiology of anterior cruciate ligament injuries in soccer, Am J Sports Med, 25, pp. 341-345, (1997); Saris D.B., Dhert W.J., Verbout A.J., Joint hemostasis: the discrepancy between old and fresh defects in cartilage repair, J Bone Joint Surg, 85, pp. 1067-1076, (2003); Kish G., Modis L., Hangody L., Osteochondral mosaicplasty for the treatment of focal chondral and osteochondral lesions of the knee and talus in the athlete, Clin Sports Med, 18, pp. 45-67, (1999); Mithoefer K., Hambly K., della Villa S., Silvers H., Mandelbaum B.R., Return to sports participation after articular cartilage repair in the knee: scientific evidence, Am J Sports Med, 37, SUPPL. 1, (2009); Zaslav K., Cole B.J., Brewster R., DeBererdino T., Farr J., Fowler P., Nissen C., A prospective study of autologous chondrocyte transplantation in patients with failed prior treatment for articular cartilage defect of the knee: results of the study of the treatment of articular repair (STAR) clinical trial, Am J Sports Med, 37, pp. 42-55, (2009); Gooding C.R., Bartlett W., Bentley G., Skinner J.A., Carrington R., Flanagan A., A prospective, randomised study comparing two techniques of autologous chondrocyte implantation for osteochondral defects in the knee: periosteum covered versus type I/III collagen covered, Knee, 13, 3, pp. 203-210, (2006)","K. Mithoefer; Harvard Vanguard Orthopedics and Sports Medicine, Harvard Medical School, Chestnut Hill, MA 02467, 291 Independence Drive, United States; email: kmithoefer@partners.org","","","19476043","","","","English","Cartilage","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84872968561" "Padulo J.; Tabben M.; Attene G.; Ardigò L.P.; Dhahbi W.; Chamari K.","Padulo, J. (54684953400); Tabben, M. (55560409700); Attene, G. (55354776300); Ardigò, L.P. (6603326166); Dhahbi, W. (56018506100); Chamari, K. (6602474344)","54684953400; 55560409700; 55354776300; 6603326166; 56018506100; 6602474344","The Impact of Jumping during Recovery on Repeated Sprint Ability in Young Soccer Players","2015","Research in Sports Medicine","23","3","","240","252","12","21","10.1080/15438627.2015.1040919","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938976751&doi=10.1080%2f15438627.2015.1040919&partnerID=40&md5=f660e9bd9748c88c66ade3ed993b70a0","University eCampus, Novedrate, Italy; Tunisian Research Laboratory 'Sports Performance Optimization', National Center of Medicine and Science in Sport, Tunis, Tunisia; CONI Italian Olympic Committee, Sardinia, Italy; Faculté des Sports, Centre d'Etudes des Transformations des Activités Physiques et Sportives, Université de Rouen, Rouen, France; Faculty of Medicine and Surgery, University of Cagliari, Cagliari, Italy; School of Exercise and Sport Science, Department of Neurological and Movement Sciences, University of Verona, Via Felice Casorati, 43, Verona, 37131, Italy; Higher Institute of Sports and Physical Education, Manouba University, Tunis, Tunisia; Athlete Health and Performance Research Centre Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar","Padulo J., University eCampus, Novedrate, Italy, Tunisian Research Laboratory 'Sports Performance Optimization', National Center of Medicine and Science in Sport, Tunis, Tunisia, CONI Italian Olympic Committee, Sardinia, Italy; Tabben M., Faculté des Sports, Centre d'Etudes des Transformations des Activités Physiques et Sportives, Université de Rouen, Rouen, France; Attene G., CONI Italian Olympic Committee, Sardinia, Italy, Faculty of Medicine and Surgery, University of Cagliari, Cagliari, Italy; Ardigò L.P., School of Exercise and Sport Science, Department of Neurological and Movement Sciences, University of Verona, Via Felice Casorati, 43, Verona, 37131, Italy; Dhahbi W., Tunisian Research Laboratory 'Sports Performance Optimization', National Center of Medicine and Science in Sport, Tunis, Tunisia, Higher Institute of Sports and Physical Education, Manouba University, Tunis, Tunisia; Chamari K., Athlete Health and Performance Research Centre Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar","This study compared the effect of counter-movement-jump (CMJ)-based recovery on repeated-sprint-ability (RSA). Eighteen male footballers (16 ± 0 years, 65 ± 10 kg, 1.74 ± 0.10 m) performed three RSA-tests. RSA-1/-3 were performed according to standard procedures, while three CMJs (over 10″) - as a potential fatigue-determinant and/or running mechanics interference - were administered during RSA-2 recoveries. RSA performance, exercise effort (fatigue index [FI], rating of perceived exertion [RPE], blood lactate concentration [BLa]), simple kinematics (steps number), vertical-jump characteristics (stretch-shortening-cycle-efficiency [SSCE] assessed before/after RSA) were investigated. ANOVA showed no differences between RSA-1,-3. During RSA-2, performance was lower than RSA-1/-3, while steps number did not change. During RSA-2, FI, BLa, RPE were higher than RSA-1/-3 (FI +21.10/+20.43%, P<0.05; BLa +16.25/+13.34%, P<0.05; RPE +12.50/+9.57%, P<0.05). During RSA-2, SSCE, as the CMJ/squat-jump-height-ratio, was not significantly different from RSA-1/-3. Passive recovery RSA allows better performance. Yet, RSA CMJ-based recovery is effective in increasing training load (FI, BLa, RPE) without perturbing running mechanics (simple kinematics, SSCE). © 2015 Taylor & Francis.","exercise performance; fatigue; metabolism; recovery; soccer","Adolescent; Athletic Performance; Biomechanical Phenomena; Exercise Test; Humans; Lactic Acid; Male; Physical Exertion; Plyometric Exercise; Recovery of Function; Running; Soccer; lactic acid; adolescent; athletic performance; biomechanics; blood; convalescence; exercise; exercise test; human; male; physiology; plyometrics; running; soccer","Alexander R.M., Elastic Mechanisms in Animal Movement, (1988); Bangsbo J., Norregaard L., Thorso F., Activity profile of competition soccer, Canadian Journal of Sport Sciences, 16, pp. 110-116, (1991); Bogdanis G.C., Nevill M.E., Boobis L.H., Lakomi H.K., Contribution of phosphocreatine and aerobic metabolism to energy supply during repeated sprint exercise, Journal of Applied Physiology, 80, pp. 876-884, (1996); Bosco C., Luhtanen P., Komi P.V., A simple method for measurement of mechanical power in jumping, European Journal of Applied Physiology and Occupational Physiology, 50, pp. 273-282, (1983); Buchheit M., Mendez-Villanueva A., Delhomel G., Brughelli M., Ahmaidi S., Improving repeated sprint ability in young elite soccer players: Repeated shuttle sprints vs. explosive strength training, Journal of Strength and Conditioning Research, 24, pp. 2715-2722, (2010); Castagna C., Abt G., Manzi V., Annino G., Padua E., D'Ottavio S., Effect of recovery mode on repeated sprint ability in young basketball players, Journal of Strength and Conditioning Research, 22, pp. 923-929, (2008); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (1988); Dal Pupo J., Arins F.B., Antonacci Guglielmo L.G., Rosendo Da-Silva R.C., Moro A.R., Dos Santos S.G., Physiological and neuromuscular indices associated with sprint running performance, Research in Sports Medicine, 21, pp. 124-135, (2013); Dellal A., Keller D., Carling C., Chaouachi A., Wong Del P., Chamari K., Physiologic effects of directional changes in intermittent exercise in soccer players, Journal of Strength and Conditioning Research, 24, pp. 3219-3226, (2010); Dorado C., Sanchis-Moysi J., Calbet J.A., Effects of recovery mode on performance, O2 uptake, and O2 deficit during high-intensity intermittent exercise, Canadian Journal of Applied Physiology, 29, pp. 227-244, (2004); Duffield R., Edge J., Bishop D., Effects of high-intensity interval training on the VO2 response during severe exercise, Journal of Science and Medicine in Sport, 9, pp. 249-255, (2006); Dupont G., Blondel N., Berthoin S., Performance for short intermittent runs: Active recovery vs. passive recovery, European Journal of Applied Physiology, 89, pp. 548-554, (2003); Fitzsimons M., Dawson B., Ward D., Wilkinson A., Cycling and running tests of repeated sprint ability, Australian Journal of Science and Medicine in Sport, 25, pp. 82-87, (1993); Foster C., Hector L.L., Welsh R., Schrager M., Green M.A., Snyder A.C., Effects of specific versus cross-training on running performance, European Journal of Applied Physiology and Occupational Physiology, 70, pp. 367-372, (1995); Glaister M., Multiple sprint work: Physiological responses, mechanisms of fatigue and the influence of aerobic fitness, Sports Medicine, 35, pp. 757-777, (2005); Glaister M., Howatson G., Pattison J.R., McInnes G., The reliability and validity of fatigue measures during multiple-sprint work: An issue revisited, Journal of Strength and Conditioning Research, 22, pp. 1597-1601, (2008); Hirvonen J., Rehunen S., Rusko H., Harkonen M., Breakdown of highenergy phosphate compounds and lactate accumulation during short supramaximal exercise, European Journal of Applied Physiology and Occupational Physiology, 56, pp. 253-259, (1987); Hopkins W.G., Measures of reliability in sports medicine and science, Sports Medicine, 30, 1, pp. 1-15, (2000); Impellizzeri F.M., Rampinini E., Castagna C., Bishop D., Ferrari Bravo D., Tibaudi A., Wisloff U., Validity of a repeated-sprint test for football, International Journal of Sports Medicine, 29, 1, pp. 899-905, (2008); Margaria R., Oliva R.D., Di Prampero P.E., Cerretelli P., Energy utilization in intermittent exercise of supramaximal intensity, Journal of Applied Physiology, 26, pp. 752-756, (1969); McBride J.M., Nimphius S., Erickson T.M., The acute effects of heavy-load squats and loaded countermovement jumps on sprint performance, Journal of Strength and Conditioning Research, 19, pp. 893-897, (2005); McGuigan M.R., Doyle T.L., Newton M., Edwards D.J., Nimphius S., Newton R.U., Eccentric utilization ratio: Effect of sport and phase of training, Journal of Strength and Conditioning Research, 20, pp. 992-995, (2006); Padulo J., Di Giminiani R., Ibba G., Zarrouk N., Moalla W., Attene G., Chamari K., The acute effect of whole body vibration on repeated shuttle-running in young soccer players, International Journal of Sports Medicine, 35, 1, pp. 49-54, (2014); Padulo J., D'Ottavio S., Pizzolato F., Smith L., Annino G., Kinematic analysis of soccer players in shuttle running, International Journal of Sports Medicine, 33, pp. 459-462, (2012); Rampinini E., Bishop D., Marcora S.M., Ferrari Bravo D., Sassi R., Impellizzeri F.M., Validity of simple field tests as indicators of match-related physical performance in top-level professional soccer players, International Journal of Sports Medicine, 28, pp. 228-235, (2007); Signorile J.F., Ingalls C., Tremblay L.M., The effects of active and passive recovery on short-term, high intensity power output, Canadian Journal of Applied Physiology, 18, 1, pp. 31-42, (1993); Spencer M., Bishop D., Dawson B., Goodman C., Physiological and metabolic responses of repeated-sprint activities: Specific to field-based team sports, Sports Medicine, 35, pp. 1025-1044, (2005); Spencer M., Bishop D., Dawson B., Goodman C., Duffield R., Metabolism and performance in repeated cycle sprints: Active versus passive recovery, Medicine and Science in Sports and Exercise, 38, pp. 1492-1499, (2006); Spencer M., Dawson B., Goodman C., Dascombe B., Bishop D., Performance and metabolism in repeated sprint exercise: Effect of recovery intensity, European Journal of Applied Physiology, 103, pp. 545-552, (2008); Spierer D.K., Goldsmith R., Baran D.A., Hryniewicz K., Katz S.D., Effects of active vs. passive recovery on work performed during serial supramaximal exercise tests, International Journal of Sports Medicine, 25, pp. 109-114, (2004); Stojanovic M.D., Ostojic S.M., Calleja-Gonzalez J., Milosevic Z., Mikic M., Correlation between explosive strength, aerobic power and repeated sprint ability in elite basketball players, Journal of Sports Medicine and Physical Fitness, 52, pp. 375-381, (2012)","L.P. Ardigò; School of Exercise and Sport Science, Department of Neurological and Movement Sciences, University of Verona, Verona, Via Felice Casorati, 43, 37131, Italy; email: luca.ardigo@univr.it","","Bellwether Publishing, Ltd.","15438627","","RSMEC","26038845","English","Res. Sports Med.","Article","Final","","Scopus","2-s2.0-84938976751" "Di Paolo S.; Zaffagnini S.; Pizza N.; Grassi A.; Bragonzoni L.","Di Paolo, Stefano (57209464265); Zaffagnini, Stefano (7003438311); Pizza, Nicola (57214127835); Grassi, Alberto (57205264407); Bragonzoni, Laura (7801511871)","57209464265; 7003438311; 57214127835; 57205264407; 7801511871","Poor motor coordination elicits altered lower limb biomechanics in young football (Soccer) players: Implications for injury prevention through wearable sensors","2021","Sensors","21","13","4371","","","","16","10.3390/s21134371","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85108843702&doi=10.3390%2fs21134371&partnerID=40&md5=e24019ad4c3ed90d566c73ede50b57b5","Department for Life Quality Studies, University of Bologna, Bologna, 40136, Italy; Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, 40136, Italy; Orthopaedic and Traumatologic Clinic II, IRCCS Istituto Ortopedico Rizzoli, Bologna, 40136, Italy","Di Paolo S., Department for Life Quality Studies, University of Bologna, Bologna, 40136, Italy; Zaffagnini S., Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, 40136, Italy, Orthopaedic and Traumatologic Clinic II, IRCCS Istituto Ortopedico Rizzoli, Bologna, 40136, Italy; Pizza N., Orthopaedic and Traumatologic Clinic II, IRCCS Istituto Ortopedico Rizzoli, Bologna, 40136, Italy; Grassi A., Orthopaedic and Traumatologic Clinic II, IRCCS Istituto Ortopedico Rizzoli, Bologna, 40136, Italy; Bragonzoni L., Department for Life Quality Studies, University of Bologna, Bologna, 40136, Italy","Motor coordination and lower limb biomechanics are crucial aspects of anterior cruciate ligament (ACL) injury prevention strategies in football. These two aspects have never been assessed together in real scenarios in the young population. The present study aimed to investigate the influence of motor coordination on lower limb biomechanics in young footballers during an on‐the-pitch training. Eighteen juvenile football players (10 y ± 2 m) were enrolled. Each player performed a training drill with sport-specific movements (vertical jump, agility ladders, change of direction) and the Harre circuit test (HCT) to evaluate players’ motor coordination. Wearable inertial sensors (MTw Awinda, Xsens) were used to assess lower limb joint angles and accelerations. Based on the results of the HCT, players were divided into poorly coordinated (PC) and well‐coordinated (WC) on the basis of the literature benchmark. The PC group showed a stiffer hip biomechanics strategy (up to 40% lower flexion angle, ES = 2.0) and higher internal‐external hip rotation and knee valgus (p < 0.05). Significant biomechanical limb asymmetries were found only in the PC group for the knee joint (31–39% difference between dominant and non‐dominant limb, ES 1.6–2.3). Poor motor coordination elicited altered hip and knee biomechanics during sport-specific dynamic movements. The monitoring of motor coordination and on-field biomechanics might enhance the targeted trainings for ACL injury prevention. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.","ACL; Football; Injury prevention; Joint kinematics; Motor coordination; Wearable sensors","Biomechanical Phenomena; Football; Lower Extremity; Soccer; Wearable Electronic Devices; Biomechanics; Biophysics; Football; Joints (anatomy); Physiological models; Anterior cruciate ligament injury; Circuit test; Dynamic movements; Football players; Hip and knees; Inertial sensor; Injury prevention; Motor co-ordination; biomechanics; electronic device; football; lower limb; soccer; Wearable sensors","Watson A., Mjaanes J.M., Council on Sports Medicine and Fitness. Soccer Injuries in Children and Adolescents, Pediatrics, 144, (2019); Dietvorst M., Brzoskowski M.H., van der Steen M., Delvaux E., Janssen R.P.A., Van Melick N., Limited Evidence for Return to Sport Testing after ACL Reconstruction in Children and Adolescents under 16 Years: A Scoping Review, J. Exp. 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Train, 48, pp. 782-789, (2013); Slauterbeck J.R., Choquette R., Tourville T.W., Krug M., Mandelbaum B.R., Vacek P., Beynnon B.D., Implementation of the FIFA 11+ Injury Prevention Program by High School Athletic Teams Did Not Reduce Lower Extremity Injuries: A Cluster Randomized Controlled Trial, Am. J. Sports Med, 47, pp. 2844-2852, (2019); Soligard T., Nilstad A., Steffen K., Myklebust G., Holme I., Dvorak J., Bahr R., Andersen T.E., Compliance with a Comprehensive Warm‐up Programme to Prevent Injuries in Youth Football, Br. J. Sports Med, 44, pp. 787-793, (2010); Steffen K., Emery C.A., Romiti M., Kang J., Bizzini M., Dvorak J., Finch C.F., Meeuwisse W.H., High Adherence to a Neuromuscular Injury Prevention Programme (FIFA 11+) Improves Functional Balance and Reduces Injury Risk in Canadian Youth Female Football Players: A Cluster Randomised Trial, Br. J. 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Train, 53, pp. 135-143, (2018); King E., Richter C., Daniels K.A.J., Franklyn-Miller A., Falvey E., Myer G.D., Jackson M., Moran R., Strike S., Biomechanical but Not Strength or Performance Measures Differentiate Male Athletes Who Experience ACL Reinjury on Return to Level 1 Sports, Am. J. Sports Med, (2021); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Changing Sidestep Cutting Technique Reduces Knee Valgus Loading, Am. J. Sports Med, 37, pp. 2194-2200, (2009); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., van den Bogert A.J., Paterno M.V., Succop P., Biomechanical Measures of Neuromuscular Control and Valgus Loading of the Knee Predict Anterior Cruciate Ligament Injury Risk in Female Athletes: A Prospective Study, Am. J. 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Biomech, 60, pp. 181-187, (2017); Romanchuk N.J., Del Bel M.J., Benoit D.L., Sex‐Specific Landing Biomechanics and Energy Absorption during Unanticipated Single‐Leg Drop‐Jumps in Adolescents: Implications for Knee Injury Mechanics, J. Biomech, 113, (2020); Petrucci M., Petrigna L., Pomara F., Piccione M.C., Alesi M., Bianco A., Validation in Young Soccer Players of the Modified Version of the Harre Circuit Test: The Petrucci Ability Test, Montenegrin J. Sports Sci. Med, 10, pp. 67-71, (2021); Weir G., van Emmerik R., Jewell C., Hamill J., Coordination and Variability during Anticipated and Unanticipated Sidestepping, Gait Posture, 67, pp. 1-8, (2019)","S. Zaffagnini; Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, 40136, Italy; email: stefano.zaffagnini@unibo.it","","MDPI AG","14248220","","","34202369","English","Sensors","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85108843702" "Kunugi S.; Masunari A.; Koumura T.; Fujimoto A.; Yoshida N.; Miyakawa S.","Kunugi, Shun (57125778100); Masunari, Akihiko (56262106000); Koumura, Takashi (57203856093); Fujimoto, Akihisa (57203850775); Yoshida, Naruto (57125387000); Miyakawa, Shumpei (15769772200)","57125778100; 56262106000; 57203856093; 57203850775; 57125387000; 15769772200","Altered lower limb kinematics and muscle activities in soccer players with chronic ankle instability","2018","Physical Therapy in Sport","34","","","28","35","7","18","10.1016/j.ptsp.2018.08.003","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053204185&doi=10.1016%2fj.ptsp.2018.08.003&partnerID=40&md5=1460de95cb33eaad3cf293aa5b2b06a5","University of Tsukuba, Ibaraki, Japan; Kagoshima United Football Club, Kagoshima, Japan; Tsukuba Football Club, Ibaraki, Japan; Teikyo Heisei University, Tokyo, Japan","Kunugi S., University of Tsukuba, Ibaraki, Japan; Masunari A., Kagoshima United Football Club, Kagoshima, Japan; Koumura T., University of Tsukuba, Ibaraki, Japan; Fujimoto A., Tsukuba Football Club, Ibaraki, Japan; Yoshida N., Teikyo Heisei University, Tokyo, Japan; Miyakawa S., University of Tsukuba, Ibaraki, Japan","Objective: To examine the lower limb kinematics and muscle activities in diagonal single-leg rebound jump in soccer players with chronic ankle instability (CAI). Design: Cross-sectional study. Setting: Laboratory. Participants: Thirty male collegiate soccer players participated: 15 with CAI were compared with 15 without CAI, matched by physical description. Intervention(s): In the diagonal single-leg rebound jump, participants stood on one leg on a 30-cm high box, hopped down diagonally (45°) onto a force plate, and jumped vertically as high as possible with hands on their hips. Main outcome measures: Hip, knee, and ankle kinematics were acquired using a motion capture system. The activity of the gluteus medius, hip adductor, and lower leg muscles was recorded using electromyography. Jump performance was calculated using a force plate. Results: The CAI group had (i) decreased hip adduction, knee flexion, external rotation, and dorsiflexion angle; (ii) reduced hip adductor and peroneus muscle activations; and (iii) reduced jump height and short flight time. Conclusions: Male collegiate soccer players with CAI showed altered kinematics and muscle activities during a diagonal single-leg rebound jump; this may adversely affect rebound jump performance. © 2018 Elsevier Ltd","Chronic ankle instability; Diagonal rebound jump; Lower limb kinematics; Muscle activity","Ankle; Biomechanical Phenomena; Cross-Sectional Studies; Humans; Joint Instability; Lower Extremity; Male; Muscle, Skeletal; Soccer; Young Adult; adduction; adult; ankle; ankle dorsiflexion; ankle instability; Article; chronic disease; clinical article; controlled study; cross-sectional study; electromyography; external rotation; gluteus medius muscle; hip; hip adductor; hip muscle; human; joint function; joint mobility; jumping; kinematics; knee; knee function; lower leg muscle; lower limb; male; muscle contraction; peroneus muscle; priority journal; soccer player; young adult; biomechanics; joint instability; lower limb; pathophysiology; physiology; skeletal muscle; soccer","Agel J., Evans T.A., Dick R., Putukian M., Marshall S.W., Descriptive epidemiology of collegiate men's soccer injuries: National collegiate athletic association injury surveillance system, 1988-1989 through 2002-2003, Journal of Athletic Training, 42, 2, pp. 270-277, (2007); Anandacoomarasamy A., Barnsley L., Long term outcomes of inversion ankle injuries, British Journal of Sports Medicine, 39, 3, (2005); Beckman S.M., Buchanan T.S., Ankle inversion injury and hypermobility: Effect on hip and ankle muscle electromyography onset latency, Archives of Physical Medicine and Rehabilitation, 76, 12, pp. 1138-1143, (1995); Bell A.L., Pedersen D.R., Brand R.A., A comparison of the accuracy of several hip center location prediction methods, Journal of Biomechanics, 23, 6, pp. 617-621, (1990); Carse B., Meadows B., Bowers R., Rowe P., Affordable clinical gait analysis: An assessment of the marker tracking accuracy of a new low-cost optical 3D motion analysis system, Physiotherapy, 99, 4, pp. 347-351, (2013); Caulfield B.M., Garrett M., Functional instability of the ankle: Differences in patterns of ankle and knee movement prior to and post landing in a single leg jump, Int J Sports Med, 23, 1, pp. 64-68, (2002); Cloke D.J., Ansell P., Avery P., Deehan D., Ankle injuries in football academies: A three-centre prospective study, Br S Sports Med, 45, 9, pp. 702-808, (2011); Dayakidis M.K., Boudolos K., Ground reaction force data in functional ankle instability during two cutting movements, Clin Boimech (Bristol, Avon), 21, 4, pp. 405-411, (2006); Delahunt E., Monaghan K., Caulfield B., Changes in lower limb kinematics, kinetics, and muscle activity in subjects with functional instability of the ankle joint during a single leg drop jump, Journal of Orthopaedic Research, 24, 10, pp. 1991-2000, (2006); Doherty C., Bleakley C., Hertel J., Caulfield B., Ryan J., Sweeney K., Et al., Coordination and symmetry patterns during the drop vertical jump, 6-months after first-time lateral ankle sprain, Journal of Orthopaedic Research, 33, 10, pp. 1537-1544, (2015); Drewes L.K., McKeon P.O., Paolini G., Riley P., Kerrigan D.C., Ingersoll C.D., Et al., Altered ankle kinematics and shank-rear-foot coupling in those with chronic ankle instability, Journal of Sport Rehabilitation, 18, 3, pp. 375-388, (2009); Eechaute C., De Ridder R., Maes T., Beckwee D., Swinnen E., Buyl R., Et al., Evidence of different landing strategy in subjects with chronic ankle instability, Gait & Posture, 52, pp. 62-67, (2017); Flanagan E.P., Ebben W.P., Jensen R.L., Reliability of the reactive strength index and time to stabilization during depth jumps, The Journal of Strength & Conditioning Research, 22, 5, pp. 1677-1682, (2008); Friel K., McLean N., Myers C., Caceres M., Ipsilateral hip abductor weakness after inversion ankle sprain, Journal of Athletic Training, 41, 1, pp. 74-78, (2006); Gribble P.A., Robinson R.H., Alterations in knee kinematics and dynamic stability associated with chronic ankle instability, Journal of Athletic Training, 44, 4, pp. 350-355, (2009); Herb C.C., Grossman K., Fefer M.A., Donovan L., Hertel J., Lower extremity biomechanics during a drop-vertical jump in participants with or without chronic ankle instability, Journal of Athletic Training, 53, 4, pp. 364-371, (2018); Hertel J., Functional anatomy, pathomechanics, and pathophysiology of lateral ankle instability, Journal of Athletic Training, 37, 4, pp. 364-375, (2002); Individuals with diminished hip abductor muscle strength exhibit altered ankle biomechanics and neuromuscular activation during unipedal balance tasks, Gait & Posture, 39, pp. 933-938, (2014); Konrad P., The ABC of EMG. A practical introduction to kinesiological electromyography, Vols. 20–30, (2006); Koshino Y., Ishida T., Yamanaka M., Ezawa Y., Okunuki T., Kobayashi T., Et al., Kinematics and muscle activities of the lower limb during a side-cutting task in subjects with chronic ankle instability, Knee Surgery, Sports Traumatology, Arthroscopy, 24, 4, pp. 1071-1080, (2016); Koshino Y., Yamanaka M., Ezawa Y., Ishida T., Kobayashi T., Samukawa M., Et al., Lower limb joint motion during a cross cutting movement differs in individuals with and without chronic ankle instability, Physical Therapy in Sport, 15, 4, pp. 242-248, (2014); Kramer L.C., Denegar C.R., Buckley W.E., Hertel J., Factors associated with anterior cruciate ligament injury: History in female athletes, The Journal of Sports Medicine and Physical Fitness, 47, 4, pp. 446-454, (2007); Kunugi S., Masunari A., Noh B., Mori T., Yoshida N., Miyakawa S., Cross-cultural adaptation, reliability, and validity of the Japanese version of the Cumberland ankle instability tool, Disability & Rehabilitation, 39, 1, pp. 50-58, (2017); Kunugi S., Masunari A., Noh B., Yoshida N., Miyakawa S., Postural stability and lower leg muscle activity during a diagonal single-leg landing differs in male collegiate soccer players with and without functional ankle instability, J Phys Fitness Sports Med, 6, 4, pp. 257-265, (2017); Lee S.P., Powers C., Fatigue of the hip abductors results in increased medial-lateral center of pressure excursion and altered peroneus longus activation during a unipedal landing task, Clinical biomechanics, 28, 5, pp. 524-529, (2013); Needle A.R., Charles B., Buz S., Farquhar W.B., Thomas S.J., Rose W.C., Et al., Muscle spindle traffic in functionally unstable ankles during ligamentous stress, Journal of Athletic Training, 48, 2, pp. 192-202, (2013); Roos K.G., Kerr Z.Y., Mauntel T.C., Djoko A., Dompier T.P., Wikstrom E.A., The epidemiology of lateral ligament complex ankle sprains in National Collegiate Athletic Association Sports, The American Journal of Sports Medicine, 45, 1, pp. 201-209, (2017); Simpson J.D., Stewart E.M., Macias D.M., Chander H., Knight A.C., Individuals with chronic ankle instability exhibit dynamic postural stability deficits and altered unilateral landing biomechanics: A systematic review, Physical Therapy in Sport, (2018); Son S.J., Kim H., Seeley M.K., Hopkins J.T., Movement strategies among groups of chronic ankle instability, coper, and control, Medicine & Science in Sports & Exercise, 49, 8, pp. 1649-1661, (2017); Suda E.Y., Sacco I.C., Altered leg muscle activity in volleyball players with functional ankle instability during a sideward lateral cutting movement, Physical Therapy in Sport, 12, 4, pp. 164-170, (2011); Terada M., Pietrosimone B., Gribble P.A., Individuals with chronic ankle instability exhibit altered landing knee kinematics: Potential link with the mechanism of loading for the anterior cruciate ligament, Clinical biomechanics, 29, 10, pp. 1125-1130, (2014); Thompson C., Schabrun S., Romero R., Bialocerkowski A., van Dieen J., Marshall P., Factors contributing to chronic ankle instability: A systematic review and meta-analysis of systematic reviews, Sports Medicine, 48, 1, pp. 189-205, (2018); Wu X., Song W., Zheng C., Zhou S., Bai S., Morphological study of mechanoreceptors in collateral ligaments of the ankle joint, Journal of Orthopaedic Surgery and Research, 12, (2015); Yeung M.S., Chan K.M., So C.H., Yuan W.Y., An epidemiological survey on ankle sprain, British Journal of Sports Medicine, 28, 2, pp. 112-116, (1994)","S. Kunugi; Faculty of Health and Sport Sciences, University of Tsukuba, Ibaraki, 305-8574, 1-1-1, Tennodai, Tsukuba, Japan; email: shun-kunugi@hotmail.com","","Churchill Livingstone","1466853X","","PTSHB","30144785","English","Phys. Ther. Sport","Article","Final","","Scopus","2-s2.0-85053204185" "Shultz S.J.; Schmitz R.J.; Cone J.R.; Copple T.J.; Montgomery M.M.; Pye M.L.; Tritsch A.J.","Shultz, Sandra J. (7006678357); Schmitz, Randy J. (7102530016); Cone, John R. (23388237500); Copple, Timothy J. (56072599900); Montgomery, Melissa M. (36608680700); Pye, Michele L. (55510250200); Tritsch, Amanda J. (15833551400)","7006678357; 7102530016; 23388237500; 56072599900; 36608680700; 55510250200; 15833551400","Multiplanar knee laxity increases during a 90-min intermittent exercise protocol","2013","Medicine and Science in Sports and Exercise","45","8","","1553","1561","8","18","10.1249/MSS.0b013e31828cb94e","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880571361&doi=10.1249%2fMSS.0b013e31828cb94e&partnerID=40&md5=1eb14e6cf956fdb25ef579b7bf13b321","Department of Kinesiology, Applied Neuromechanics Research Laboratory, Greensboro, NC 27402, 1408 Walker Ave., United States; Athletes Research Institute, Inc., Chapel Hill, NC, United States; Department of Kinesiology, California State University, Northridge, CA, United States","Shultz S.J., Department of Kinesiology, Applied Neuromechanics Research Laboratory, Greensboro, NC 27402, 1408 Walker Ave., United States; Schmitz R.J., Department of Kinesiology, Applied Neuromechanics Research Laboratory, Greensboro, NC 27402, 1408 Walker Ave., United States; Cone J.R., Athletes Research Institute, Inc., Chapel Hill, NC, United States; Copple T.J., Department of Kinesiology, Applied Neuromechanics Research Laboratory, Greensboro, NC 27402, 1408 Walker Ave., United States; Montgomery M.M., Department of Kinesiology, California State University, Northridge, CA, United States; Pye M.L., Department of Kinesiology, Applied Neuromechanics Research Laboratory, Greensboro, NC 27402, 1408 Walker Ave., United States; Tritsch A.J., Department of Kinesiology, Applied Neuromechanics Research Laboratory, Greensboro, NC 27402, 1408 Walker Ave., United States","PURPOSE: This study aimed to examine changes in sagittal (APLAX), frontal (VVLAX), and transverse (IERLAX) plane knee laxity in men and women during an intermittent exercise protocol (IEP) simulating the intensity and duration of a soccer match. METHODS: Intercollegiate/club athletes (29 females and 30 males) were measured on APLAX (-90 to 130 N) before and after warm-up and every 15 min during and for 1 h after the IEP. VVLAX (±10 N·m) and IERLAX (±5 N·m) were measured before and after warm-up, at the end of each 45-min half, and at 30 min after exercise. Values were compared to a control (no exercise) condition. RESULTS: Compared to control condition, females increased APLAX and VVLAX during the IEP, whereas males did not (P < 0.037). APLAX increased within 15 min of exercise (9.5 ± 2.1 mm), and peak values obtained at the end of the first (10.1 ± 2.0 mm) and second half (10.1 ± 2.1 mm) were 12% greater than before warm-up values (9.0 ± 1.8 mm). VVLAX increased before warm-up (9.5 ± 3.4 ) to the end of each half (both 10.4 ± 3.2 ; 10% increase) and remained elevated 30 min after exercise (10.5 ± 2.9 ). Both sexes increased IERLAX from before warm-up (25.5 ± 6.1 ) to all time points (after warm-up = 26.6 ± 6.0 , first half = 27.0 ± 6.6 , second half = 27.3 ± 6.5 , 30 min after exercise = 26.95 ± 5.7 ; P = 0.007). Changes in APLAX (-0.10 to 5.9 mm), VVLAX (-1.7 to 5.7 ), and IERLAX (-4.1 to 13.3 ) during exercise varied considerably among individuals in both sexes, with a larger proportion of females experiencing substantial changes in APLAX and VVLAX. CONCLUSIONS: Although exercise-related knee laxity changes were more pronounced in females, there was a subset of both males and females who experienced substantial knee laxity increases during exercise. Whether these individuals are more susceptible to higher-risk lower extremity biomechanics and injury risk later in a game or practice is currently under investigation. Copyright © 2013 by the American College of Sports Medicine.","ACL INJURY; BIOMECHANICS; JOINT; RISK FACTOR; SEX COMPARISON; SOCCER","Athletes; Biomechanical Phenomena; Exercise; Female; Humans; Joint Instability; Knee Injuries; Knee Joint; Male; Sex Factors; Soccer; article; athlete; biomechanics; exercise; female; human; joint instability; knee; knee injury; male; pathophysiology; physiology; sex difference; soccer","Belanger M.J., Moore D.C., Crisco J.J., Et al., Knee laxity does not vary with the menstrual cycle, before or after exercise, Am J Sports Med, 32, 5, pp. 1150-2117, (2004); Branch T.P., Browne J.E., Campbell J.D., Et al., Rotational laxity greater in patients with contralateral anterior cruciate ligament injury than healthy volunteers, Knee Surg Sports Traumatol Arthrosc, 18, 10, pp. 1379-2184, (2010); Chandrashekar N., Mansour J.M., Slauterbeck J., Et al., Sex-based differences in the tensile properties of the human anterior cruciate ligament, J Biomech, 39, pp. 2943-3250, (2006); 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Rowe A., Wright S., Nyland J., Et al., Effects of a 2-hour cheerleading practice on dynamic postural stability, knee laxity, and hamstring extensibility, J Orthop Sports Phys Ther, 29, 8, pp. 455-462, (1999); Rozzi S.L., Lephart S.M., Fu F.H., Effects of muscular fatigue on knee joint laxity and neuromuscular characteristics of male and female athletes, J Athl Train, 34, 2, pp. 106-114, (1999); Rozzi S.L., Lephart S.M., Gear W.S., Et al., Knee joint laxity and neuromuscular characteristics of male and female soccer and basketball players, J Athl Train., 33, 2, (1998); Sailors M.E., Keskula D.R., Perrin D.H., Effect of running on anterior knee laxity in collegiate-level female athletes after ACL reconstruction, J Orthop Sports Phys Ther, 21, pp. 233-329, (1995); Scerpella T.A., Stayer T.J., Makhuli B.Z., Ligamentous laxity and non-contact anterior cruciate ligament tears: A gender based comparison, Orthopaedics., 28, 7, pp. 656-660, (2005); Schmitz R.J., Shultz S.J., Kulas A.S., Et al., Kinematic analysis of functional lower extremity perturbations, Clin Biomech, 19, pp. 1032-1109, (2004); Shultz S.J., Carcia C.R., Perrin D.H., Knee joint laxity affects muscle activation patterns in the healthy knee, J Electromyogr Kinesiol, 14, pp. 475-483, (2004); Shultz S.J., Pye M.L., Montgomery M.M., Schmitz R.J., Associations between lower extremity muscle mass and multi-planar knee laxity and stiffness: A potential explanation for sex differences in frontal and transverse plane knee laxity, Am J Sports Med, 40, 12, pp. 2836-3244, (2012); Shultz S.J., Sander T.C., Kirk S.E., Et al., Relationship between sex hormones and anterior knee laxity across the menstrual cycle, Med Sci Sports Exerc, 36, 7, pp. 1165-1174, (2004); Shultz S.J., Schmitz R.J., Effects of transverse and frontal plane knee laxity on hip and knee neuromechanics during drop landings, Am J Sports Med., 37, 9, pp. 1821-2130, (2009); Shultz S.J., Schmitz R.J., Beynnon B.D., Variations in varus/valgus and internal/external rotational knee laxity and stiffness across the menstrual cycle, J Orthop Res, 29, 3, pp. 318-325, (2011); Shultz S.J., Schmitz R.J., Kong Y., Et al., Cyclic variations in multiplanar knee laxity influence landing biomechanics, Med Sci Sports Exerc, 44, 5, pp. 900-999, (2012); Shultz S.J., Schmitz R.J., Nguyen A., Et al., Joint laxity is related to lower extremity energetics during a drop jump landing, Med Sci Sports Exerc, 42, 4, pp. 771-780, (2010); Skinner H.B., Wyatt M.P., Stone M.L., Et al., Exercise related knee joint laxity, Am J Sports Med, 14, pp. 30-34, (1986); Steiner M.E., Grana W.A., Chillag K., Et al., The effect of exercise on anterior-posterior knee laxity, Am J Sports Med, 14, pp. 24-28, (1986); Stoller D.W., Markolf K.L., Zager S.A., Et al., The effects of exercise, ice and ultrasonography on torsional laxity of the knee, Clin Orthop Relat Res, 174, pp. 172-180, (1983); Uh B.S., Beynnon B.D., Churchill D.L., Et al., A new device to measure knee laxity during weightbearing and non-weight bearing conditions, J Orthop Res., 19, pp. 1185-1191, (2001); Uhorchak J.M., Scoville C.R., Williams G.N., Et al., Risk factors associated with non-contact injury of the anterior cruciate ligament, Am J Sports Med, 31, 6, pp. 831-842, (2003); Weisman G., Pope M.H., Johnson R.J., Cyclic loading in knee ligament injuries, Am J Sports Med, 8, 1, pp. 24-30, (1980); Woodford-Rogers B., Cyphert L., Denegar C.R., Risk factors for anterior cruciate ligament injury in high school and college athletes, J Athl Train, 29, 4, pp. 343-346, (1994)","S.J. Shultz; Department of Kinesiology, Applied Neuromechanics Research Laboratory, Greensboro, NC 27402, 1408 Walker Ave., United States; email: sjshultz@uncg.edu","","","15300315","","MSCSB","23470306","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-84880571361" "Stiffler-Joachim M.R.; Lukes D.H.; Kliethermes S.A.; Heiderscheit B.C.","Stiffler-Joachim, Mikel Renee (57208238413); Lukes, Drew Henry (57222966404); Kliethermes, Stephanie A. (55097054400); Heiderscheit, Bryan C. (6603343381)","57208238413; 57222966404; 55097054400; 6603343381","Lower Extremity Kinematic and Kinetic Asymmetries during Running","2021","Medicine and Science in Sports and Exercise","53","5","","945","950","5","17","10.1249/MSS.0000000000002558","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104276501&doi=10.1249%2fMSS.0000000000002558&partnerID=40&md5=f66be17b01f461f8282ffa02b2e13e57","Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, United States; Badger Athletic Performance Program, University of Wisconsin-Madison, Madison, WI, United States; Sports Rehabilitation, University of Wisconsin Hospitals and Clinics, Madison, WI, United States; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, United States","Stiffler-Joachim M.R., Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, United States, Badger Athletic Performance Program, University of Wisconsin-Madison, Madison, WI, United States; Lukes D.H., Sports Rehabilitation, University of Wisconsin Hospitals and Clinics, Madison, WI, United States; Kliethermes S.A., Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, United States; Heiderscheit B.C., Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, United States, Badger Athletic Performance Program, University of Wisconsin-Madison, Madison, WI, United States, Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, United States","Between-limb asymmetries during running are often evaluated to assess injury risk or recovery. Asymmetries less than 10% are generally considered normal, but it is unknown if asymmetries vary depending on the metric of interest, the athlete's sex, or running speed. Purpose The primary aims of this investigation were to describe the magnitude of asymmetries of common variables during running among healthy athletes and to determine if sex and speed influence magnitudes of asymmetry. Methods This study analyzed routinely collected running gait data on healthy Division I collegiate athletes. All athletes had no history of lower extremity surgery, no lower extremity injuries for 3 months before testing, and running data available at 2.68, 2.95, 3.35, 3.80, and 4.47 m·s-1. Asymmetries were calculated for ground reaction forces, spatiotemporal metrics, joint kinematics, and joint kinetics. Separate linear mixed-effects models assessed the influence of sex, speed, and the interaction on asymmetries of interest. z Scores were calculated for significant effects to further assess the magnitude of differences. Results Results from 204 athletes were included. The magnitude of asymmetry varied depending on the variable of interest, with asymmetries ≤3° observed for joint kinematics and greater asymmetries observed among joint work asymmetries ranging from 10% to 40%. No significant interactions between sex and speed were observed. Differences in sex and speed were noted; however, the effect sizes were very small based on z score comparison (-0.17 ≤ z ≤ 0.36) and were unlikely to be meaningful. Conclusions The magnitude of asymmetry varies considerably depending on the running gait variable. Interpretation of between-limb asymmetry in running mechanics needs to be specific to the variable of interest, whereas sex or running speed seem to be minor factors. © Lippincott Williams & Wilkins.","BIOMECHANICS; GAIT; LIMB SYMMETRY","Adolescent; Ankle Joint; Basketball; Biomechanical Phenomena; Deceleration; Female; Gait; Gait Analysis; Hip Joint; Humans; Kinetics; Knee Joint; Lower Extremity; Male; Running; Sex Factors; Soccer; Track and Field; Young Adult; adolescent; ankle; basketball; biomechanics; deceleration; female; gait; hip; human; kinetics; knee; lower limb; male; physiology; procedures; running; sex factor; soccer; track and field; young adult","Burland J.P., Lepley A.S., DiStefano L.J., Lepley L.K., No shortage of disagreement between biomechanical and clinical hop symmetry after anterior cruciate ligament reconstruction, Clin Biomech (Bristol, Avon), 68, pp. 144-150, (2019); Ithurburn M.P., Paterno M.V., Ford K.R., Hewett T.E., Schmitt L.C., Young athletes with quadriceps femoris strength asymmetry at return to sport after anterior cruciate ligament reconstruction demonstrate asymmetric single-leg drop-landing mechanics, Am J Sports Med, 43, 11, pp. 2727-2737, (2015); Dai B., Layer J., Vertz C., Baseline assessments of strength and balance performance and bilateral asymmetries in collegiate athletes, J Strength Cond Res, 33, 11, pp. 3015-3029, (2019); O'Malley E., Richter C., King E., Countermovement jump and isokinetic dynamometry as measures of rehabilitation status after anterior cruciate ligament reconstruction, J Athl Train, 53, 7, pp. 687-695, (2018); Noyes F.R., Barber S.D., Mangine R.E., Abnormal lower limb symmetry determined by function hop tests after anterior cruciate ligament rupture, Am J Sports Med, 19, 5, pp. 513-518, (1991); Hanley B., Tucker C.B., Gait variability and symmetry remain consistent during high-intensity 10,000 m treadmill running, J Biomech, 79, pp. 129-134, (2018); Bredeweg S.W., Buist I., Kluitenberg B., Differences in kinetic asymmetry between injured and noninjured novice runners: a prospective cohort study, Gait Posture, 38, 4, pp. 847-852, (2013); Zifchock R.A., Davis I., Higginson J., McCaw S., Royer T., Side-to-side differences in overuse running injury susceptibility: a retrospective study, Hum Mov Sci, 27, 6, pp. 888-902, (2008); Phinyomark A., Hettinga B.A., Osis S.T., Ferber R., Gender and age-related differences in bilateral lower extremity mechanics during treadmill running, PLoS One, 9, 8, (2014); Sinclair J., Selfe J., Sex differences in knee loading in recreational runners, J Biomech, 48, 10, pp. 2171-2175, (2015); Stiffler-Joachim M.R., Wille C.M., Kliethermes S.A., Johnston W., Heiderscheit B.C., Foot angle and loading rate during running demonstrate a nonlinear relationship, Med Sci Sports Exerc, 51, 10, pp. 2067-2072, (2019); Furlong L.M., Egginton N.L., Kinetic asymmetry during running at preferred and nonpreferred speeds, Med Sci Sports Exerc, 50, 6, pp. 1241-1248, (2018); Takabayashi T., Edama M., Nakamura M., Nakamura E., Inai T., Kubo M., Gender differences associated with rearfoot, midfoot, and forefoot kinematics during running, Eur J Sport Sci, 17, 10, pp. 1289-1296, (2017); Lee J.B., Sutter K.J., Askew C.D., Burkett B.J., Identifying symmetry in running gait using a single inertial sensor, J Sci Med Sport, 13, 5, pp. 559-563, (2010); Kyritsis P., Bahr R., Landreau P., Miladi R., Witvrouw E., Likelihood of ACL graft rupture: not meeting six clinical discharge criteria before return to sport is associated with a four times greater risk of rupture, Br J Sports Med, 50, 15, pp. 946-951, (2016); Nawasreh Z., Logerstedt D., Cummer K., Axe M.J., Risberg M.A., Snyder-Mackler L., Do patients failing return-to-activity criteria at 6 months after anterior cruciate ligament reconstruction continue demonstrating deficits at 2 years?, Am J Sports Med, 45, 5, pp. 1037-1048, (2017); Thomson A., Einarsson E., Hansen C., Bleakley C., Whiteley R., Marked asymmetry in vertical force (but not contact times) during running in ACL reconstructed athletes <9 months post-surgery despite meeting functional criteria for return to sport, J Sci Med Sport, 21, 9, pp. 890-893, (2018); Karanikas K., Arampatzis A., Bruggemann G.P., Motor task and muscle strength followed different adaptation patterns after anterior cruciate ligament reconstruction, Eur J Phys Rehabil Med, 45, 1, pp. 37-45, (2009); Pamukoff D.N., Montgomery M.M., Choe K.H., Moffit T.J., Garcia S.A., Vakula M.N., Bilateral alterations in running mechanics and quadriceps function following unilateral anterior cruciate ligament reconstruction, J Orthop Sports Phys Ther, 48, 12, pp. 960-967, (2018); Van Hooren B., Fuller J.T., Buckley J.D., Is motorized treadmill running biomechanically comparable to overground running? A systematic review and meta-analysis of cross-over studies, Sports Med, 50, 4, pp. 785-813, (2020); Robadey J., Staudenmann D., Schween R., Gehring D., Gollhofer A., Taube W., Lower between-limb asymmetry during running on treadmill compared to overground in subjects with laterally pronounced knee osteoarthritis, PLoS One, 13, 10, (2018)","B.C. Heiderscheit; Madison, 1685 Highland Avenue, 6136 Medical Foundation Centennial Building, 53705, United States; email: heiderscheit@ortho.wisc.edu","","Lippincott Williams and Wilkins","01959131","","MSCSB","33148971","English","Med. Sci. Sports Exerc.","Article","Final","","Scopus","2-s2.0-85104276501" "Tscholl P.; O'Riordan D.; Fuller C.W.; Dvorak J.; Junge A.","Tscholl, Philippe (18435147900); O'Riordan, D. (57198038899); Fuller, C.W. (7202433422); Dvorak, J. (7202106693); Junge, A. (7006011216)","18435147900; 57198038899; 7202433422; 7202106693; 7006011216","Tackle mechanisms and match characteristics in women's elite football tournaments","2007","British Journal of Sports Medicine","41","SUPPL. 1","","i15","i19","4","20","10.1136/bjsm.2007.036889","https://www.scopus.com/inward/record.uri?eid=2-s2.0-34547667550&doi=10.1136%2fbjsm.2007.036889&partnerID=40&md5=f62ae116722c28146ad457a0fc4f1e28","Schulthess Klinik, CH-8008 Zurich, Lengghalde 2, Switzerland; FIFA Medical Assessment and Research Centre (F-MARC), Zurich, Switzerland; Schulthess Klinik, Zurich, Switzerland; Centre for Sports Medicine, University of Nottingham, United Kingdom","Tscholl P., Schulthess Klinik, CH-8008 Zurich, Lengghalde 2, Switzerland, FIFA Medical Assessment and Research Centre (F-MARC), Zurich, Switzerland, Schulthess Klinik, Zurich, Switzerland; O'Riordan D., FIFA Medical Assessment and Research Centre (F-MARC), Zurich, Switzerland, Schulthess Klinik, Zurich, Switzerland; Fuller C.W., Centre for Sports Medicine, University of Nottingham, United Kingdom; Dvorak J., FIFA Medical Assessment and Research Centre (F-MARC), Zurich, Switzerland, Schulthess Klinik, Zurich, Switzerland; Junge A., FIFA Medical Assessment and Research Centre (F-MARC), Zurich, Switzerland, Schulthess Klinik, Zurich, Switzerland","Background: Several tools have been used for assessing risk situations and for gathering tackle information from international football matches for men but not for women. Purpose: To analyse activities in women's football and to identify the characteristics and risk potentials of tackles. Study design: Retrospective video analysis. Method: Video recordings of 24 representative matches from six women's top-level tournaments were analysed for tackle parameters and their risk potential. Results: 3531 tackles were recorded. Tackles in which the tackling player came from the side and stayed on her feet accounted for nearly half of all challenges for the ball in which body contact occurred. 2.7% of all tackles were classified as risk situations, with sliding-in tackles from behind and the side having the highest risk potential. Match referees sanctioned sliding-in tackles more often than other tackles (20% v 17%, respectively). Tackle parameters did not change in the duration of a match; however, there was an increase in the number of injury risk situations and foul plays towards the end of each half. Conclusions: Match properties provide valuable information for a better understanding of injury situations in football. Staying on feet and jumping vertically tackle actions leading to injury were sanctioned significantly more times by the referee than those not leading to injury (p<0.001), but no such difference was seen for sliding-in tackles (previously reported to have the highest injury potential in women's football). Therefore, either the laws of the game are not adequate or match referees in women's football are not able to distinguish between sliding-in tackles leading to and those not leading to injury.","","Adolescent; Adult; Athletic Injuries; Biomechanics; Female; Humans; Retrospective Studies; Risk Factors; Soccer; Video Recording; Women's Health; article; football; health hazard; human; jumping; sport injury; sporting event; videorecording","Junge A., Dvorak J., Graf-Baumann T., Et al., Football injuries during FIFA tournaments and the Olympic Games, 1998-2001: Development and implementation of an injury-reporting system, Am J Sports Med, 32, 1 SUPPL., (2004); Junge A., Dvorak J., Soccer injuries - a review on incidence and prevention, Sports Med, 34, pp. 929-938, (2004); Biedert R.M., Bachmann M., Women's soccer. Injuries, risks, and prevention] [Article in German], Orthopäde, 34, pp. 448-453, (2005); Statistics: FIFA Women's World Cup USA 1999, (1999); Statistics: FIFA Women's World Cup USA 2003, (2003); Statistics: FIFA Women's Under-19 World Championship Canada 2004, (2004); Statistics: FIFA Women's Under-19 World Championship Thailand 2002, (2002); Hawkins R.D., Fuller C.W., A prospective epidemiological study of injuries in four English professional football clubs, Br J Sports Med, 33, pp. 196-203, (1999); Junge A., Dvorak J., Graf-Baumann T., Football injuries during the World Cup 2002, Am J Sports Med, 32, 1 SUPPL., (2004); Hoy K., Lindblad B.E., Terkelsen C.J., Et al., European soccer injuries. A prospective epidemiologic and socioeconomic study, Am J Sports Med, 20, pp. 318-322, (1992); Ostenberg A., Roos H., Injury risk factors in female European football. A prospective study of 123 players during one season, Scand J Med Sci Sports, 10, pp. 279-285, (2000); Faude O., Junge A., Kindermann W., Et al., Injuries in female soccer players: A prospective study in the German national league, Am J Sports Med, 33, pp. 1694-1700, (2005); Junge A., Dvorak J., Injuries in female football players in top-level international tournaments, Br J Sports Med, 41, SUPPL. 1, (2007); Emery C.A., Meeuwisse W.H., Hartmann S.E., Evaluation of risk factors for injury in adolescent soccer, Am J Sports Med, 33, pp. 1882-1891, (2005); Price R.J., Hawkins R.D., Hulse M.A., Et al., The Football Association medical research programme: An audit of injuries in academy youth football, Br J Sports Med, 38, pp. 466-471, (2004); Arnason A., Gudmundsson A., Dahl H.A., Et al., Soccer injuries in Iceland, Scand J Med Sci Sports, 6, pp. 40-45, (1996); Nielsen A.B., Yde J., Epidemiology and traumatology of injuries in soccer, Am J Sports Med, 17, pp. 803-807, (1989); Andersen T.E., Larsen O., Tenga A., Et al., Football incident analysis: A new video based method to describe injury mechanisms in professional football, Br J Sports Med, 37, pp. 226-232, (2003); Arnason A., Tenga A., Engebretsen L., Et al., A prospective video-based analysis of injury situations in elite male football: Football incident analysis, Am J Sports Med, 32, pp. 1459-1465, (2004); Fuller C.W., Smith G.L., Junge A., Et al., The influence of tackle parameters on the propensity for injury in international football, Am J Sports Med, 32, 1 SUPPL., (2004); Fuller C.W., Smith G.L., Junge A., Et al., An assessment of player error as an injury causation factor in international football, Am J Sports Med, 32, 1 SUPPL., (2004); Rahnama N., Reilly T., Lees A., Injury risk associated with playing actions during competitive soccer, Br J Sports Med, 36, pp. 354-359, (2002); Statistics: Olympic Football Tournaments Sydney 2000, (2000); Statistics: Olympic Women's Football Tournament Athen 2004, (2004); Giza E., Mithofer K., Farrell L., Et al., Injuries in women's professional soccer, Br J Sports Med, 39, pp. 212-216, (2005); Hawkins R.D., Fuller C.W., An examination of the frequency and severity of injuries and incidents at three levels of professional football, Br J Sports Med, 32, pp. 326-332, (1998); Morgan B.E., Oberlander M.A., An examination of injuries in major league soccer. The inaugural season, Am J Sports Med, 29, pp. 426-430, (2001); Tscholl P., O'Riordan D., Fuller C.W., Et al., Causation of injuries in female football players during top-level tournaments, Br J Sports Med, 41, SUPPL. 1, (2007); Andersen T.E., Engebretsen L., Bahr R., Rule violations as a cause of injuries in male Norwegian professional football: Are the referees doing their job?, Am J Sports Med, 32, 1 SUPPL., (2004); Andersen T.E., Tenga A., Engebretsen L., Et al., Video analysis of injuries and incidents in Norwegian professional football, Br J Sports Med, 38, pp. 626-631, (2004); Fuller C.W., Junge A., Dvorak J., A six year prospective study of the incidence and causes of head and neck injuries in international football, Br J Sports Med, 39, SUPPL. I, (2005); Tscholl P., O'Riordan D., Gutzwiler F., Et al., Football injuries-application of law 12 in top-class female tournaments, (2006); Ehrenberg A., Le culte de la performance, Paris: Hachette Littérature, (2003); Hawkins R.D., Hulse M.A., Wilkinson C., Et al., The association football medical research programme: An audit of injuries in professional football, Br J Sports Med, 35, pp. 43-47, (2001); Woods C., Hawkins R., Hulse M., Et al., The Football Association Medical Research Programme: An audit of injuries in professional football: an analysis of ankle sprains, Br J Sports Med, 37, pp. 233-238, (2003); Jacobson I., Tegner Y., Injuries among Swedish female elite football players: A prospective population study, Scand J Med Sci Sports, 17, pp. 84-91, (2007); Faude O., Junge A., Kindermann W., Et al., Risk factors for injuries in elite female soccer players, Br J Sports Med, 40, pp. 785-790, (2006)","P. Tscholl; Schulthess Klinik, CH-8008 Zurich, Lengghalde 2, Switzerland; email: philippe.tscholl@access.unizh.ch","","","03063674","","BJSMD","17646245","English","Br. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-34547667550" "Zamporri J.; Aguinaldo A.","Zamporri, Jacobo (57203902564); Aguinaldo, Arnel (6602517887)","57203902564; 6602517887","The Effects of a Compression Garment on Lower Body Kinematics and Kinetics During a Drop Vertical Jump in Female Collegiate Athletes","2018","Orthopaedic Journal of Sports Medicine","6","8","","","","","20","10.1177/2325967118789955","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053481672&doi=10.1177%2f2325967118789955&partnerID=40&md5=ba3bb6b1b6fd16af9ed372758c254709","Department of Kinesiology, Point Loma Nazarene University, San Diego, CA, United States","Zamporri J., Department of Kinesiology, Point Loma Nazarene University, San Diego, CA, United States; Aguinaldo A., Department of Kinesiology, Point Loma Nazarene University, San Diego, CA, United States","Background: The use of compression garments has spread rapidly among athletes, largely because of marketing and perceived benefits. Upon review, it is unclear whether compression garments have a significant effect on performance and recovery, although they have been found to enhance proprioception. Further, it is reported that compression of the knee joint improves both dynamic and static balance. However, there is currently a paucity of data demonstrating the effects of compression garments on the biomechanical risk factors of knee-related injuries in female athletes. Purpose: To evaluate the ability of a directional compression garment to alter hip and knee kinematics and kinetics during a drop vertical jump (DVJ) in healthy college-aged female athletes. Study Design: Controlled laboratory study. Methods: A sample of 23 healthy female collegiate athletes (mean age, 19.6 ± 1.3 years) participating in jumping sports (volleyball, basketball, and soccer) was included in this analysis. Each athlete performed 2 sets of 3 DVJs with and without a directional compression garment. Three-dimensional hip and knee kinematics and kinetics were collected using a standard Helen-Hayes 29-marker set, which was removed and reapplied after the garment was fitted, as well as 8 visible-red cameras and 2 force platforms. Each participant was tested in a single session. Results: Hip abduction range of motion was significantly reduced from 12.6° ± 5.5° to 10.2° ± 4.6° (P =.002) while performing DVJs without and with the compression garment, respectively. No statistically significant differences between conditions were found in peak hip abduction, knee valgus range of motion, peak valgus, peak hip abduction moment, and peak knee valgus moment. Conclusion: The results of this study show that wearing compression garments does have minimal effects on lower body mechanics during landing from a DVJ, partially supporting the idea that compression garments could acutely alter movement patterns associated with the knee injury risk. However, further research should focus on muscle activation patterns and adaptations over time. Clinical Relevance: The use of specifically designed compression garments could aid in the prevention of knee injuries by inducing changes in jumping mechanics. © The Author(s) 2018.","ACL; compression; force; jump; kinematics; kinetics; knee; tights; torque; valgus","abduction; adduction; adult; anterior cruciate ligament injury; Article; athlete; athletics; biomechanics; controlled study; dynamics; electromyography; female; human; kinematics; kinetics; priority journal; range of motion; valgus knee; young adult","Position Statement: The Use of Knee Braces, (1997); Agel J., Rockwood T., Klossner D., Collegiate ACL injury rates across 15 sports: National Collegiate Athletic Association Injury Surveillance System data update (2004-2005 through 2012-2013), Clin J Sport Med, 26, 6, pp. 518-523, (2016); Aguinaldo A.L., Buttermore J., Chambers H., Effects of upper trunk rotation on shoulder joint torque among baseball pitchers of various levels, J Appl Biomech, 23, 1, pp. 42-51, (2007); Alentorn-Geli E., Myer G.D., Silvers H.J., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players, part 2: a review of prevention programs aimed to modify risk factors and to reduce injury rates, Knee Surg Sports Traumatol Arthrosc, 17, 8, pp. 859-879, (2009); Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer: NCAA data and review of literature, Am J Sports Med, 23, 6, pp. 694-701, (1995); Chae W.-S., Kang N.-J., Effects of wearing spandex pants on impact forces and muscle activities during drop landing, Korean J Sport Biomech, 19, 3, pp. 603-610, (2009); Chuang S.H., Huang M.H., Chen T.W., Weng M.C., Liu C.W., Chen C.H., Effect of knee sleeve on static and dynamic balance in patients with knee osteoarthritis, Kaohsiung J Med Sci, 23, 8, pp. 405-411, (2007); Collins D.F., Refshauge K.M., Todd G., Gandevia S.C., Cutaneous receptors contribute to kinesthesia at the index finger, elbow, and knee, J Neurophysiol, 94, 3, pp. 1699-1706, (2005); The TriFit Web Knee Brace Fit to Remarkable Function, (2017); Doan B.K., Kwon Y.H., Newton R.U., Et al., Evaluation of a lower-body compression garment, J Sports Sci, 21, 8, pp. 601-610, (2003); Duffield R., Cannon J., King M., The effects of compression garments on recovery of muscle performance following high-intensity sprint and plyometric exercise, J Sci Med Sport, 13, 1, pp. 136-140, (2010); Ewing K.A., Begg R.K., Galea M.P., Lee P.V., Effects of prophylactic knee bracing on lower limb kinematics, kinetics, and energetics during double-leg drop landing at 2 heights, Am J Sports Med, 44, 7, pp. 1753-1761, (2016); Giotis D., Zampeli F., Pappas E., Mitsionis G., Papadopoulos P., Georgoulis A.D., The effect of knee braces on tibial rotation in anterior cruciate ligament-deficient knees during high-demand athletic activities, Clin J Sport Med, 23, 4, pp. 287-292, (2013); Gupta A., Bryers J.J., Clothier P.J., The effect of leg compression garments on the mechanical characteristics and performance of single-leg hopping in healthy male volunteers, BMC Sports Sci Med Rehabil, 7, 1, (2015); Hanzlikova I., Richards J., Tomsa M., Et al., The effect of proprioceptive knee bracing on knee stability during three different sport related movement tasks in healthy subjects and the implications to the management of anterior cruciate ligament (ACL) injuries, Gait Posture, 48, pp. 165-170, (2016); Hassan B.S., Mockett S., Doherty M., Influence of elastic bandage on knee pain, proprioception, and postural sway in subjects with knee osteoarthritis, Ann Rheum Dis, 61, 1, pp. 24-28, (2002); Herrington L., Simmonds C., Hatcher J., The effect of a neoprene sleeve on knee joint position sense, Res Sports Med, 13, 1, pp. 37-46, (2005); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Hooper D.R., Dulkis L.L., Secola P.J., Et al., Roles of an upper-body compression garment on athletic performances, J Strength Cond Res, 29, 9, pp. 2655-2660, (2015); Kraemer W.J., Bush J.A., Bauer J.A., Et al., Influence of compression garments on vertical jump performance in NCAA Division I volleyball players, J Strength Cond Res, 10, 3, pp. 180-183, (1996); Kuster M.S., Grob K., Kuster M., Wood G.A., Gachter A., The benefits of wearing a compression sleeve after ACL reconstruction, Med Sci Sports Exerc, 31, 3, pp. 368-371, (1999); MacRae B.A., Cotter J.D., Laing R.M., Compression garments and exercise: garment considerations, physiology and performance, Sports Med, 41, 10, pp. 815-843, (2011); MacRae B.A., Laing R.M., Niven B.E., Cotter J.D., Pressure and coverage effects of sporting compression garments on cardiovascular function, thermoregulatory function, and exercise performance, Eur J Appl Physiol, 112, 5, pp. 1783-1795, (2012); Ozdil N., Anand S., Recent developments in textile materials and products used for activewear and sportswear, Electronic Journal of Vehicle Technologies, 8, 3, pp. 68-83, (2014); Perlau R., Frank C., Fick G., The effect of elastic bandages on human knee proprioception in the uninjured population, Am J Sports Med, 23, 2, pp. 251-255, (1995); Pietrosimone B.G., Grindstaff T.L., Linens S.W., Uczekaj E., Hertel J., A systematic review of prophylactic braces in the prevention of knee ligament injuries in collegiate football players, J Athl Train, 43, 4, pp. 409-415, (2008); Prodromos C.C., Han Y., Rogowski J., Joyce B., Shi K., A meta-analysis of the incidence of anterior cruciate ligament tears as a function of gender, sport, and a knee injury-reduction regimen, Arthroscopy, 23, 12, pp. 1320-1325, (2007); Saunders P.U., Pyne D.B., Telford R.D., Hawley J.A., Factors affecting running economy in trained distance runners, Sports Med, 34, 7, pp. 465-485, (2004); Schween R., Gehring D., Gollhofer A., Immediate effects of an elastic knee sleeve on frontal plane gait biomechanics in knee osteoarthritis, PLoS One, 10, 1, (2015); Smith S.D., Laprade R.F., Jansson K.S., Aroen A., Wijdicks C.A., Functional bracing of ACL injuries: current state and future directions, Knee Surg Sports Traumatol Arthrosc, 22, 5, pp. 1131-1141, (2014); Sugimoto D., LeBlanc J.C., Wooley S.E., Micheli L.J., Kramer D.E., The effectiveness of a functional knee brace on joint-position sense in anterior cruciate ligament-reconstructed individuals, J Sport Rehabil, 25, 2, pp. 190-194, (2016); Thompson J.A., Tran A.A., Gatewood C.T., Et al., Biomechanical effects of an injury prevention program in preadolescent female soccer athletes, Am J Sports Med, 45, 2, pp. 294-301, (2017); Tiggelen D.V., Coorevits P., Witvrouw E., The effects of a neoprene knee sleeve on subjects with a poor versus good joint position sense subjected to an isokinetic fatigue protocol, Clin J Sport Med, 18, 3, pp. 259-265, (2008); Turker H., Sze H., Surface electromyography in sports and exercise, Electrodiagnosis in New Frontiers of Clinical Research, pp. 175-189, (2013)","A. Aguinaldo; Department of Kinesiology, Point Loma Nazarene University, San Diego, 3900 Lomaland Drive, 92106, United States; email: arnelaguinaldo@pointloma.edu","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85053481672" "Janda D.H.; Bir C.; Wild B.; Olson S.; Hensinger R.N.","Janda, David H. (6701451615); Bir, Cynthia (6602602658); Wild, Bart (57197974268); Olson, Steve (57190057127); Hensinger, Robert N. (7006324390)","6701451615; 6602602658; 57197974268; 57190057127; 7006324390","Goal Post Injuries in Soccer: A Laboratory and Field Testing Analysis of a Preventive I ntervention","1995","The American Journal of Sports Medicine","23","3","","340","344","4","23","10.1177/036354659502300316","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0029059099&doi=10.1177%2f036354659502300316&partnerID=40&md5=4a398eb27fdb52fe2df3eab408f2a5ab","The Institute for Preventative Sports Medicine, Orthopedic Surgery Associates, University of Michigan, Ann Arbor, Michigan, United States; Department of Recreational Sports, University of Michigan, Ann Arbor, Michigan, United States; Department of Pediatric Orthopedic Surgery, University of Michigan, Ann Arbor, Michigan, United States","Janda D.H., The Institute for Preventative Sports Medicine, Orthopedic Surgery Associates, University of Michigan, Ann Arbor, Michigan, United States; Bir C., The Institute for Preventative Sports Medicine, Orthopedic Surgery Associates, University of Michigan, Ann Arbor, Michigan, United States; Wild B., The Institute for Preventative Sports Medicine, Orthopedic Surgery Associates, University of Michigan, Ann Arbor, Michigan, United States; Olson S., Department of Recreational Sports, University of Michigan, Ann Arbor, Michigan, United States; Hensinger R.N., Department of Pediatric Orthopedic Surgery, University of Michigan, Ann Arbor, Michigan, United States","Soccer is the most popular team sport worldwide, with approximately 40 million amateur participants. Most fa talities in soccer are related to player impact with the goal post. This study focuses on two case reports, a laboratory testing phase, and a pilot field testing phase of preventive equipment that can be used around the goal to prevent injury. Horizontal and vertical impact testing in the laboratory revealed impact force was di minished when the goal post was covered with protec tive padding (reduction of 31% and 63%) (P < 0.05). These data showed a statistically significant decrease in force at all temperatures. In the pilot field testing phase of the study, 471 games were monitored. Soccer teams participating in youth, teen, and adult soccer leagues were included in this phase of the study. During the 3-year study, there were seven player collisions with padded goal posts, and no injuries were recorded. The use of padded goal posts within the game of soccer has been documented to reduce the possibility of injury, both in the laboratory phase and in the pilot field testing phase. © 1995, SAGE Publications. All rights reserved.","","Athletic Injuries; Biomechanics; Case Report; Cervical Vertebrae; Child; Equipment Design; Femoral Fractures; Head Injuries, Closed; Human; Knee Injuries; Male; Pilot Projects; Risk Factors; Soccer; Spinal Fractures; Support, Non-U.S. Gov't; accident prevention; article; biomechanics; case report; childhood injury; human; male; priority journal; school child; sport injury","Hodgson V.R., Mason M.W.; Janda D.H., Wojtys E.M., Hankin F.M., Et al., Softball sliding injuries. A prospective study comparing standard and modified bases, JAMA, 259, pp. 1848-1850, (1988); Janda D.H., Wojtys E.M., Hankin F.M., Et al., MMWR, 37, pp. 169-170, (1988); Maehulm S., Br J Sports Med, 8, pp. 186-190, (1984); Schmidt-Olsen S., Am J Sports Med, 19, pp. 273-275, (1991); Sullivan J.A., Gross R.H., Grana W.A., Et al., Am J Sports Med, 8, pp. 325-327, (1980); (1993)","","","","03635465","","","7661264","English","Am. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-0029059099" "Sartori L.; Betti S.; Chinellato E.; Castiello U.","Sartori, Luisa (14014572600); Betti, Sonia (55747099000); Chinellato, Eris (6508125939); Castiello, Umberto (7006266454)","14014572600; 55747099000; 6508125939; 7006266454","The multiform motor cortical output: Kinematic, predictive and response coding","2015","Cortex","70","","","169","178","9","19","10.1016/j.cortex.2015.01.019","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930968560&doi=10.1016%2fj.cortex.2015.01.019&partnerID=40&md5=291cd453af5def088d4b7ef243c4cb0f","Dipartimento di Psicologia Generale, Università di Padova, Padova, Italy; Center for Cognitive Neuroscience, Università di Padova, Padova, Italy; School of Computing, University of Leeds, Leeds, United Kingdom; Centro Beniamino Segre, Accademia dei Lincei, Roma, Italy","Sartori L., Dipartimento di Psicologia Generale, Università di Padova, Padova, Italy, Center for Cognitive Neuroscience, Università di Padova, Padova, Italy; Betti S., Dipartimento di Psicologia Generale, Università di Padova, Padova, Italy; Chinellato E., School of Computing, University of Leeds, Leeds, United Kingdom; Castiello U., Dipartimento di Psicologia Generale, Università di Padova, Padova, Italy, Center for Cognitive Neuroscience, Università di Padova, Padova, Italy, Centro Beniamino Segre, Accademia dei Lincei, Roma, Italy","Observing actions performed by others entails a subliminal activation of primary motor cortex reflecting the components encoded in the observed action. One of the most debated issues concerns the role of this output: Is it a mere replica of the incoming flow of information (kinematic coding), is it oriented to anticipate the forthcoming events (predictive coding) or is it aimed at responding in a suitable fashion to the actions of others (response coding)? The aim of the present study was to disentangle the relative contribution of these three levels and unify them into an integrated view of cortical motor coding. We combined transcranial magnetic stimulation (TMS) and electromyography recordings at different timings to probe the excitability of corticospinal projections to upper and lower limb muscles of participants observing a soccer player performing: (i) a penalty kick straight in their direction and then coming to a full stop, (ii) a penalty kick straight in their direction and then continuing to run, (iii) a penalty kick to the side and then continuing to run. The results show a modulation of the observer's corticospinal excitability in different effectors at different times reflecting a multiplicity of motor coding. The internal replica of the observed action, the predictive activation, and the adaptive integration of congruent and non-congruent responses to the actions of others can coexist in a not mutually exclusive way. Such a view offers reconciliation among different (and apparently divergent) frameworks in action observation literature, and will promote a more complete and integrated understanding of recent findings on motor simulation, motor resonance and automatic imitation. © 2015 Elsevier Ltd.","Action observation; Motor evoked potentials; Motor resonance; Transcranial magnetic stimulation","Adult; Biomechanical Phenomena; Electromyography; Evoked Potentials, Motor; Female; Humans; Imitative Behavior; Male; Motion Perception; Motor Cortex; Muscle, Skeletal; Photic Stimulation; Transcranial Magnetic Stimulation; Young Adult; adult; arm muscle; Article; athlete; body movement; controlled study; electromyography; excitability; female; human; kinematics; leg muscle; male; motor cortex; muscle contraction; post hoc analysis; primary motor cortex; transcranial magnetic stimulation; young adult; biomechanics; imitation; motor cortex; motor evoked potential; movement perception; photostimulation; physiology; skeletal muscle; transcranial magnetic stimulation","Abernethy B., Zawi K., Jackson R.C., Expertise and attunement to kinematic constraints, Perception, 37, 6, pp. 931-948, (2008); Aglioti S.M., Cesari P., Romani M., Urgesi C., Action anticipation and motor resonance in elite basketball players, Nature Neuroscience, 11, 9, pp. 1109-1116, (2008); Alaerts K., Heremans E., Swinnen S.P., Wenderoth N., How are observed actions mapped to the observer's motor system? Influence of posture and perspective, Neuropsychologia, 47, 2, pp. 415-422, (2009); Avenanti A., Bolognini N., Maravita A., Aglioti S.M., Somatic and motor components of action simulation, Current Biology, 17, 24, pp. 2129-2135, (2007); Bach P., Peatfield N.A., Tipper S.P., Focusing on body sites: the role of spatial attention in action perception, Experimental Brain Research, 178, pp. 509-517, (2007); Barchiesi G., Cattaneo L., Early and late motor responses to action observation, Social Cognitive and Affective Neuroscience, 8, 6, pp. 711-719, (2013); Barchiesi G., Wache S., Cattaneo L., The frames of reference of the motor-visual aftereffect, PloS One, 7, 7, (2012); Bekkering H., De Bruijn E.R., Cuijpers R.H., Newman-Norlund R., Van Schie H.T., Meulenbroek R., Joint action: neurocognitive mechanisms supporting human interaction, Topics in Cognitive Science, 1, 2, pp. 340-352, (2009); Bertenthal B.I., Longo M.R., Kosobud A., Imitative response tendencies following observation of intransitive actions, Journal of Experimental Psychology: Human Perception and Performance, 32, pp. 210-225, (2006); Borroni P., Baldissera F., Activation of motor pathways during observation and execution of hand movements, Social Neuroscience, 3, 3-4, pp. 276-288, (2008); Borroni P., Montagna M., Cerri G., Baldissera F., Cyclic time course of motor excitability modulation during the observation of a cyclic hand movement, Brain Research, 1065, 1, pp. 115-124, (2005); Brasil-Neto J.P., Cohen L.G., Panizza M., Nilsson J., Roth B.J., Hallett M., Optimal focal transcranial magnetic activation of the human motor cortex: effects of coil orientation, shape of the induced current pulse, and stimulus intensity, Journal of Clinical Neurophysiology, 9, 1, pp. 132-136, (1992); Brass M., Heyes C.M., Imitation: is cognitive neuroscience solving the correspondence problem?, Trends in Cognitive Science, 9, pp. 489-495, (2005); Briggs G.G., Nebes R.D., Patterns of hand preference in a student population, Cortex, 11, 3, pp. 230-238, (1975); Candidi M., Vicario C.M., Abreu A.M., Aglioti S.M., Competing mechanisms for mapping action-related categorical knowledge and observed actions, Cerebral Cortex, 20, pp. 2832-2841, (2010); Castiello U., Umilta C., Size of the attentional focus and efficiency of processing, Acta Psychologica, 73, 3, pp. 195-209, (1990); Castiello U., Umilta C., Splitting focal attention, Journal of Experimental Psychology: Human Perception and Performance, 18, 3, (1992); Catmur C., Walsh V., Heyes C., Sensorimotor learning configures the human mirror system, Current Biology, 17, 17, pp. 1527-1531, (2007); Cattaneo L., Maule F., Barchiesi G., Rizzolatti G., The motor system resonates to the distal goal of observed actions: testing the inverse pliers paradigm in an ecological setting, Experimental Brain Research, 231, 1, pp. 37-49, (2013); Cavallo A., Bucchioni G., Castiello U., Becchio C., Goal or movement? 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Jr.","Knapp, T.P. (7004722697); Mandelbaum, B.R. (7004262150); Garrett W.E., Jr. (7102162248)","7004722697; 7004262150; 7102162248","Why are stress injuries so common in the soccer player?","1998","Clinics in Sports Medicine","17","4","","835","853","18","18","10.1016/S0278-5919(05)70123-X","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0031686890&doi=10.1016%2fS0278-5919%2805%2970123-X&partnerID=40&md5=9dc36b4dec1fe291f012f29af85de278","Santa Monica Ortho./Sports Med. Grp., Santa Monica, CA 90404, 1301 Twentieth Street, United States","Knapp T.P., Santa Monica Ortho./Sports Med. Grp., Santa Monica, CA 90404, 1301 Twentieth Street, United States; Mandelbaum B.R., Santa Monica Ortho./Sports Med. Grp., Santa Monica, CA 90404, 1301 Twentieth Street, United States; Garrett W.E. Jr., Santa Monica Ortho./Sports Med. Grp., Santa Monica, CA 90404, 1301 Twentieth Street, United States","Stress fractures are one of the more common problems in soccer in the 1990s. Stress fractures in amateur and professional athletes are becoming a very common entity worldwide. This article serves as an overview to the general concepts on stress fractures, including history, epidemiology, and cause. The proper diagnosis, confirmatory studies, and treatment regimens are presented. Lastly, the timing of the athlete's return to sports and stress fracture prevention are reviewed.","","algorithm; anamnesis; athlete; biomechanics; bone radiography; bone scintiscanning; human; intramedullary nailing; metatarsal bone; nuclear magnetic resonance imaging; physical examination; practice guideline; review; scaphoid bone; stress fracture; tarsal bone; tibia fracture","Andrish J.T., Bergfeld J.A., Walheim J., A prospective study on the management of shin splints, J Bone Joint Surg, 56A, pp. 1697-1700, (1974); Cann C.E., Martin M.C., Et al., Decreased spinal mineral content in amenorrheic women, JAMA, 251, pp. 626-629, (1984); Clement D.B., Tibial stress syndrome in athletes, Am J Sports Med, 2, pp. 81-85, (1974); Detmer D.E., Chronic shin splints: Classification and management of medial tibial stress syndrome, Sports Med, 3, pp. 436-446, (1986); Deutsch A.L., Mink J.H., Kerr R., pp. 79-84, (1992); Devas M.B., Stress fractures of the tibia in athletes or “shin soreness.”, J Bone Joint Surg, 40B, pp. 227-239, (1958); 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Warren M., The effects of exercise on pubertal progression and reproductive function in girls, J Clin Endocrinol Metab, 51, pp. 1150-1157, (1980); Whitelaw G.P., Merrick M.J., Levy A.S., Et al., A pneumatic leg brace for the treatment of tibial stress fractures, Clin Orthop, 270, pp. 301-305, (1991); Wilson E.S., Katz F.N., Stress fractures: An analysis of 250 consecutive cases, Radiology, 92, pp. 481-486, (1969); Wyshak G., Frisch R.E., Albright T.E., Et al., Bone fractures among former college athletes compared with nonathletes in the menopausal and postmenopausal years, Obstet Gynecol, 69, pp. 121-126, (1987)","","","W.B. Saunders","02785919","","CSMEE","","English","Clin. Sports Med.","Article","Final","","Scopus","2-s2.0-0031686890" "Denadai B.S.; de Oliveira F.B.D.; Camarda S.R.D.A.; Ribeiro L.; Greco C.C.","Denadai, Benedito Sérgio (6701813562); de Oliveira, Felipe Bruno Dias (55555505200); Camarda, Sérgio Ricardo de Abreu (26022772000); Ribeiro, Leandro (57111490200); Greco, Camila Coelho (7101809205)","6701813562; 55555505200; 26022772000; 57111490200; 7101809205","Hamstrings-to-quadriceps strength and size ratios of male professional soccer players with muscle imbalance","2016","Clinical Physiology and Functional Imaging","36","2","","159","164","5","17","10.1111/cpf.12209","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84957872054&doi=10.1111%2fcpf.12209&partnerID=40&md5=eeb8ff931bea2f2da85914fb4bb37d24","Human Performance Laboratory, UNESP, Rio Claro, SP, Brazil","Denadai B.S., Human Performance Laboratory, UNESP, Rio Claro, SP, Brazil; de Oliveira F.B.D., Human Performance Laboratory, UNESP, Rio Claro, SP, Brazil; Camarda S.R.D.A., Human Performance Laboratory, UNESP, Rio Claro, SP, Brazil; Ribeiro L., Human Performance Laboratory, UNESP, Rio Claro, SP, Brazil; Greco C.C., Human Performance Laboratory, UNESP, Rio Claro, SP, Brazil","The aim of this study was to determine the correlation between the concentric hamstrings/quadriceps muscle strength (Hcon:Qcon) and cross-sectional area ratios (Hcsa:Qcsa) in professional soccer players with Hcon:Qcon imbalance. Nine male professional soccer players (25·3 ± 4·1 years) performed five maximal concentric contractions of the knee extensors (KE) and flexors (KF) at 60 s-1 to assess Hcon:Qcon. The test was performed using the dominant (preferred kicking), and non-dominant limb with a 5-min recovery period was allowed between them. Only players with Hcon:Qcon < 0·60 (range: 0·45-0·59) in both limbs were included in this study. The muscle cross-sectional area (CSA) of KE and KF was determined by magnetic resonance imaging. The correlations between Hcon:Qcon and Hcsa:Qcsa in the dominant leg (r = -0·33), non-dominant leg (r = 0·19) and in the both legs combined (r = 0·28) were not statistically significant (P>0·05). Thus, the Hcon:Qcon seems not to be determined by Hcsa:Qcsa in professional soccer players with Hcon:Qcon imbalance. © 2016 Scandinavian Society of Clinical Physiology and Nuclear Medicine.","Asymmetry; Cross-sectional area; Injury; Isokinetic; Magnetic resonance imaging; Torque","Adult; Arthrometry, Articular; Athletes; Biomechanical Phenomena; Humans; Magnetic Resonance Imaging; Male; Muscle Contraction; Muscle Strength; Muscle Strength Dynamometer; Quadriceps Muscle; Soccer; Torque; Young Adult; adult; Article; athlete; concentric muscle contraction; hamstring; human; human experiment; leg movement; male; morphometrics; muscle characteristics and functions; muscle imbalance; muscle size; muscle strength; normal human; nuclear magnetic resonance imaging; priority journal; quadriceps femoris muscle; soccer; anatomy and histology; arthrometry; biomechanics; dynamometer; muscle contraction; nuclear magnetic resonance imaging; physiology; quadriceps femoris muscle; soccer; torque; young adult","Akagi R., Tohdoh Y., Takahashi H., Strength and size ratios between reciprocal muscle groups in the thigh and lower leg of male collegiate soccer players, Clin Physiol Funct Imaging, 34, pp. 121-125, (2014); 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Suetta C., Aagaard P., Rosted A., Jakobsen A.K., Duss B., Kjaer M., Magnusson P., Training-induced changes in muscle CSA, muscle strength, EMG, and rate of force development in elderly subjects after long-term unilateral disuse, J Appl Physiol, 97, pp. 194-1961, (2004); Tis L.L., Perrin D.H., Weltman A., Ball D.W., Gieck J.H., Effect of preload and range of motion on isokinetic torque in women, Med Sci Sports Exerc, 25, pp. 1038-1043, (1993); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., The football association medical research programme: an audit of injuries in professional football: analysis of hamstring injuries, Br J Sports Med, 38, pp. 36-41, (2004); Yeung S.S., Suen A.M., Yeung E.W., A prospective cohort study of hamstring injuries in competitive sprinters: preseason muscle imbalance as a possible risk factor, Br J Sports Med, 43, pp. 589-594, (2009)","B.S. Denadai; Human Performance Laboratory, UNESP, Rio Claro, SP, Av. 24A, 1515, Bela Vista, CEP - 13506-900, Brazil; email: bdenadai@rc.unesp.br","","Blackwell Publishing Ltd","14750961","","CPFIC","25348722","English","Clin. Physiol. Funct. Imaging","Article","Final","","Scopus","2-s2.0-84957872054" "McBurnie A.J.; Dos'Santos T.; Jones P.A.","McBurnie, Alistair J. (57209068775); Dos'Santos, Thomas (57170712800); Jones, Paul A. (55308526600)","57209068775; 57170712800; 55308526600","Biomechanical Associates of Performance and Knee Joint Loads During A 70-90° Cutting Maneuver in Subelite Soccer Players","2021","Journal of Strength and Conditioning Research","35","11","","3190","3198","8","22","10.1519/JSC.0000000000003252","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85106460995&doi=10.1519%2fJSC.0000000000003252&partnerID=40&md5=1ab9d27b911843fde91df46166ab208d","Human Performance Laboratory, Sport, Exercise, and Physiotherapy, University of Salford, Manchester, United Kingdom","McBurnie A.J., Human Performance Laboratory, Sport, Exercise, and Physiotherapy, University of Salford, Manchester, United Kingdom; Dos'Santos T., Human Performance Laboratory, Sport, Exercise, and Physiotherapy, University of Salford, Manchester, United Kingdom; Jones P.A., Human Performance Laboratory, Sport, Exercise, and Physiotherapy, University of Salford, Manchester, United Kingdom","The aim of this study was to explore the ""performance-injury risk"" conflict during cutting, by examining whole-body joint kinematics and kinetics that are responsible for faster change-of-direction (COD) performance of a cutting task in soccer players, and to determine whether these factors relate to peak external multiplanar knee moments. 34 male soccer players (age: 20 ± 3.2 years; body mass: 73.5 ± 9.2 kg; height: 1.77 ± 0.06 m) were recruited to investigate the relationships between COD kinetics and kinematics with performance and multiplanar knee joint moments during cutting. Three-dimensional motion data using 10 Qualisys Oqus 7 infrared cameras (240 Hz) and ground reaction force data from 2 AMTI force platforms (1,200 Hz) were collected to analyze the penultimate foot contact and final foot contact (FFC). Pearson's or Spearman's correlations coefficients revealed performance time (PT), peak external knee abduction moment (KAM), and peak external knee rotation moment (KRM) were all significantly related (p < 0.05) to horizontal approach velocity (PT: ρ = -0.579; peak KAM: ρ = 0.414; peak KRM: R = -0.568) and FFC peak hip flexor moment (PT: ρ = 0.418; peak KAM: ρ = -0.624; peak KRM: ρ = 0.517). Performance time was also significantly (p < 0.01) associated with horizontal exit velocity (ρ = -0.451) and, notably, multiplanar knee joint loading (peak KAM: ρ = -0.590; peak KRM: ρ = 0.525; peak KFM: ρ = -0.509). Cohen's d effect sizes (d) revealed that faster performers demonstrated significantly greater (p < 0.05; d = 1.1-1.7) multiplanar knee joint loading, as well as significantly greater (p < 0.05; d = 0.9-1.2) FFC peak hip flexor moments, PFC average horizontal GRFs, and peak knee adduction angles. To conclude, mechanics associated with faster cutting performance seem to be ""at odds"" with lower multiplanar knee joint loads. This highlights the potential performance-injury conflict present during cutting. © 2021 NSCA National Strength and Conditioning Association. All rights reserved.","anterior cruciate ligament knee injury; change of direction; external knee abduction moments; ground reaction forces; whole-body kinematics","Adolescent; Adult; Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Humans; Knee; Knee Joint; Lower Extremity; Male; Soccer; Young Adult; adolescent; adult; anterior cruciate ligament injury; biomechanics; human; injury; knee; lower limb; male; soccer; young adult","Bell A.L., Brand R.A., Pedersen D.R., Prediction of hip joint centre location from external landmarks, Hum Mov Sci, 8, pp. 3-16, (1989); Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in FA premier league soccer, J Sports Sci Med, 6, pp. 63-70, (2007); Brophy R.H., Stepan J.G., Silvers H.J., Mandelbaum B.R., Defending puts the anterior cruciate ligament at risk during soccer: A gender-based analysis, Sports Health, 7, pp. 244-249, (2015); Dai B., Garrett W.E., Gross M.T., Et al., The effects of 2 landing techniques on knee kinematics, kinetics, and performance during stop-jump and sidecutting tasks, Am J Sports Med, 43, pp. 466-474, (2015); 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Jones P.A., Herrington L., Graham-Smith P., Braking characteristics during cutting and pivoting in female soccer players, J Electromyogr Kinesiol, 30, pp. 46-54, (2016); Jones P.A., Herrington L.C., Graham-Smith P., Technique determinants of knee joint loads during cutting in female soccer players, HumMov Sci, 42, pp. 203-211, (2015); Jones P.A., Thomas C., Dos'Santos T., McMahon J., Graham-Smith P., The role of eccentric strength in 180° turns in female soccer players, Sports, 5, (2017); Kimura K., Sakurai S., A sidestep cut preparation strategy decreases the external load applied to the knee joint, Int J SportHeal Sci, 11, pp. 109-117, (2013); Kristianslund E., Faul O., Bahr R., Myklebust G., Krosshaug T., Sidestep cutting technique and knee abduction loading: Implications for ACL prevention exercises, Br J Sports Med, 48, pp. 779-783, (2014); Lees A., Technique Analysis: Performance Measurement, pp. 20-22, (1999); Marshall B.M., Franklyn-Miller A.D., King E.A., Et al., Biomechanical factors associated with time to complete a change of direction cutting maneuver, J StrengthCond Res, 28, pp. 2845-2851, (2014); 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Taylor J.B., Wright A.A., Dischiavi S.L., Townsend M.A., Marmon A.R., Activity demands during multi-directional team sports: A systematic review, Sports Med, 47, pp. 2533-2551, (2017); Taylor K.A., Terry M.E., Utturkar G.M., Et al., Measurement of in vivo anterior cruciate ligament strain during dynamic jump landing, J Biomech, 44, pp. 365-371, (2011); Vanrenterghem J., Venables E., Pataky T., Robinson M.A., The effect of running speed on knee mechanical loading in females during side cutting, J Biomech, 45, pp. 2444-2449, (2012); Walden M., Krosshaug T., Bjorneboe J., Et al., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: A systematic video analysis of 39 cases, Br J Sports Med, 49, pp. 1452-1460, (2015); Winter D.A., Biomechanics and Motor Control of Human Movement, pp. 107-110, (2009); Yeadon M.R., Kato T., Kerwin D.G., Measuring running speed using photocells, J Sports Sci, 17, pp. 249-257, (1999)","A.J. Mcburnie; Human Performance Laboratory, Sport, Exercise, and Physiotherapy, University of Salford, Manchester, United Kingdom; email: Alistair.McBurnie@manutd.co.uk","","NSCA National Strength and Conditioning Association","10648011","","","31268990","English","J. Strength Cond. Res.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85106460995" "Zago M.; David S.; Bertozzi F.; Brunetti C.; Gatti A.; Salaorni F.; Tarabini M.; Galvani C.; Sforza C.; Galli M.","Zago, Matteo (57220045130); David, Sina (57188716647); Bertozzi, Filippo (57197758376); Brunetti, Claudia (57226192655); Gatti, Alice (56731169700); Salaorni, Francesca (57226185294); Tarabini, Marco (23092293200); Galvani, Christel (55884230100); Sforza, Chiarella (7005225305); Galli, Manuela (7202606196)","57220045130; 57188716647; 57197758376; 57226192655; 56731169700; 57226185294; 23092293200; 55884230100; 7005225305; 7202606196","Fatigue Induced by Repeated Changes of Direction in Élite Female Football (Soccer) Players: Impact on Lower Limb Biomechanics and Implications for ACL Injury Prevention","2021","Frontiers in Bioengineering and Biotechnology","9","","666841","","","","16","10.3389/fbioe.2021.666841","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85110845667&doi=10.3389%2ffbioe.2021.666841&partnerID=40&md5=2fba39eab7e1a7beb3764b3b4e231a26","Dipartimento di Meccanica, Politecnico di Milano, Milan, Italy; E4Sport Laboratory, Politecnico di Milano, Lecco, Italy; Department of Human Movement Sciences, VU University Amsterdam, Amsterdam, Netherlands; Dipartimento di Scienze Biomediche per la Salute, Politecnico di Milano, Milan, Italy; IRCCS Fondazione Santa Lucia, Rome, Italy; Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milan, Italy; Dipartimento di Psicologia, Università Cattolica del Sacro Cuore, Milan, Italy","Zago M., Dipartimento di Meccanica, Politecnico di Milano, Milan, Italy, E4Sport Laboratory, Politecnico di Milano, Lecco, Italy; David S., Department of Human Movement Sciences, VU University Amsterdam, Amsterdam, Netherlands; Bertozzi F., Dipartimento di Scienze Biomediche per la Salute, Politecnico di Milano, Milan, Italy; Brunetti C., IRCCS Fondazione Santa Lucia, Rome, Italy, Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milan, Italy; Gatti A., Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milan, Italy; Salaorni F., Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milan, Italy; Tarabini M., Dipartimento di Meccanica, Politecnico di Milano, Milan, Italy, E4Sport Laboratory, Politecnico di Milano, Lecco, Italy; Galvani C., Dipartimento di Psicologia, Università Cattolica del Sacro Cuore, Milan, Italy; Sforza C., Dipartimento di Scienze Biomediche per la Salute, Politecnico di Milano, Milan, Italy; Galli M., E4Sport Laboratory, Politecnico di Milano, Lecco, Italy, Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milan, Italy","Background: The etiology of Anterior Cruciate Ligament (ACL) injury in women football results from the interaction of several extrinsic and intrinsic risk factors. Extrinsic factors change dynamically, also due to fatigue. However, existing biomechanical findings concerning the impact of fatigue on the risk of ACL injuries remains inconsistent. We hypothesized that fatigue induced by acute workload in short and intense game periods, might in either of two ways: by pushing lower limbs mechanics toward a pattern close to injury mechanism, or alternatively by inducing opposed protective compensatory adjustments. Aim: In this study, we aimed at assessing the extent to which fatigue impact on joints kinematics and kinetics while performing repeated changes of direction (CoDs) in the light of the ACL risk factors. Methods: This was an observational, cross-sectional associative study. Twenty female players (age: 20–31 years, 1st–2nd Italian division) performed a continuous shuttle run test (5-m) involving repeated 180°-CoDs until exhaustion. During the whole test, 3D kinematics and ground reaction forces were used to compute lower limb joints angles and internal moments. Measures of exercise internal load were: peak post-exercise blood lactate concentration, heart rate (HR) and perceived exertion. Continuous linear correlations between kinematics/kinetics waveforms (during the ground contact phase of the pivoting limb) and the number of consecutive CoD were computed during the exercise using a Statistical Parametric Mapping (SPM) approach. Results: The test lasted 153 ± 72 s, with a rate of 14 ± 2 CoDs/min. Participants reached 95% of maximum HR and a peak lactate concentration of 11.2 ± 2.8 mmol/L. Exercise duration was inversely related to lactate concentration (r = −0.517, p < 0.01), while neither%HRmax nor [La–]b nor RPE were correlated with test duration before exhaustion (p > 0.05). Alterations in lower limb kinematics were found in 100%, and in lower limb kinetics in 85% of the players. The most common kinematic pattern was a concurrent progressive reduction in hip and knee flexion angle at initial contact (10 players); 5 of them also showed a significantly more adducted hip. Knee extension moment decreased in 8, knee valgus moment increased in 5 players. A subset of participants showed a drift of pivoting limb kinematics that matches the known ACL injury mechanism; other players displayed less definite or even opposed behaviors. Discussion: Players exhibited different strategies to cope with repeated CoDs, ranging from protective to potentially dangerous behaviors. While the latter was not a univocal effect, it reinforces the importance of individual biomechanical assessment when coping with fatigue. © Copyright © 2021 Zago, David, Bertozzi, Brunetti, Gatti, Salaorni, Tarabini, Galvani, Sforza and Galli.","anterior cruciate ligament; changes of direction; fatigue; injury; kinematics; women soccer","Biophysics; Blood; Football; Gait analysis; Health risks; Kinematics; Lactic acid; Physiological models; Risk assessment; Shear strain; Anterior cruciate ligament injury; Biomechanical assessment; Ground reaction forces; Kinematic patterns; Lactate concentration; Linear correlation; Perceived exertion; Statistical parametric mapping; Joints (anatomy)","Alentorn-Geli E., Myer G.D., Silvers H.J., Samitier G., Romero D., Lazaro-Haro C., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: mechanisms of injury and underlying risk factors, Knee Surg. Sports Traumatol. 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Sport Sci, 19, pp. 1072-1081, (2019); Zago M., Esposito F., Rausa G., Limonta E., Corrado F., Rampichini S., Et al., Kinematic algorithm to determine the energy cost of running with changes of direction, J. Biomech, 76, pp. 189-196, (2018); Zebis M.K., Bencke J., Andersen L.L., Alkjaer T., Suetta C., Mortensen P., Et al., Acute fatigue impairs neuromuscular activity of anterior cruciate ligament-agonist muscles in female team handball players, Scand. J. Med. Sci. Sports, 21, pp. 833-840, (2011)","M. Zago; Dipartimento di Meccanica, Politecnico di Milano, Milan, Italy; email: matteo2.zago@polimi.it","","Frontiers Media S.A.","22964185","","","","English","Front. Bioeng. Biotechnol.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85110845667" "Mohammadi Orangi B.; Yaali R.; Bahram A.; Aghdasi M.T.; van der Kamp J.; Vanrenterghem J.; Jones P.A.","Mohammadi Orangi, Behzad (57223213947); Yaali, Rasoul (57223245700); Bahram, Abbas (22233273200); Aghdasi, Mohammad Taghi (57225256082); van der Kamp, John (57188978610); Vanrenterghem, Jos (6506257376); Jones, Paul A. (55308526600)","57223213947; 57223245700; 22233273200; 57225256082; 57188978610; 6506257376; 55308526600","Motor learning methods that induce high practice variability reduce kinematic and kinetic risk factors of non-contact ACL injury","2021","Human Movement Science","78","","102805","","","","18","10.1016/j.humov.2021.102805","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105308364&doi=10.1016%2fj.humov.2021.102805&partnerID=40&md5=2693b329defdbf0683b32e03a503a285","Faculty of Physical Education and Sport Sciences, Kharazmi University of Tehran, Tehran, Iran; Faculty of Physical Education and Sport Sciences, University of Tabriz, Iran; Department of Human Movement Sciences, Vrije University Amsterdam, Netherlands; Department of Rehabilitation Sciences, KU Leuven – University of Leuven, Belgium; Centre for Health Sciences Research, School of Health & Society, University of Salford, United Kingdom","Mohammadi Orangi B., Faculty of Physical Education and Sport Sciences, Kharazmi University of Tehran, Tehran, Iran; Yaali R., Faculty of Physical Education and Sport Sciences, Kharazmi University of Tehran, Tehran, Iran; Bahram A., Faculty of Physical Education and Sport Sciences, Kharazmi University of Tehran, Tehran, Iran; Aghdasi M.T., Faculty of Physical Education and Sport Sciences, University of Tabriz, Iran; van der Kamp J., Department of Human Movement Sciences, Vrije University Amsterdam, Netherlands; Vanrenterghem J., Department of Rehabilitation Sciences, KU Leuven – University of Leuven, Belgium; Jones P.A., Centre for Health Sciences Research, School of Health & Society, University of Salford, United Kingdom","The prevention of non-contact anterior cruciate ligament (ACL) injuries often involves movement training, but the effectiveness of different motor learning methods has not been fully investigated. The purpose of this study was therefore to examine the effects of linear pedagogy (LP), nonlinear pedagogy (NLP) and differential learning (DL) motor learning methods on changing kinetic and kinematic factors during expected sidestep cutting related to non-contact ACL injuries. These methods primarily differ in the amount and type of movement variability they induce during practice. Sixty-six beginner male soccer players (27.5 ± 2.7 years, 180.6 ± 4.9 cm, 78.2 ± 4.6 kg) were randomly allocated to a group that trained for 12 weeks with either a LP, NLP or DL type of motor learning methods. All participants completed a biomechanical evaluation of side-step cutting before and after the training period. Analysis of covariance was used to compare post-testing outcomes among the groups while accounting for group differences in baseline performance. Changes in all kinematic and kinetic variables in NLP and DL groups were significantly higher compared to the LP group. Most comparisons were also different between NLP and DL group with the exception of vertical ground reaction force, the knee extension/flexion, knee valgus, and ankle dorsiflexion moments. Our findings indicate that beginner male soccer players may benefit from training programs incorporating NLP or DL versus LP to lower biomechanical factors associated with non-contact ACL injury, most likely because of the associated increased execution variability during training. We discuss that practitioners should consider using the NLP or DL methods, and particular the NLP, during which variability is induced to guide search, when implementing training programs to prevent ACL injuries in soccer. © 2021 Elsevier B.V.","Anterior cruciate ligament injuries; Beginner; Motor learning strategy; Soccer","Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Humans; Knee Injuries; Knee Joint; Male; Risk Factors; Soccer; accident prevention; adult; ankle; anterior cruciate ligament injury; Article; biomechanics; body movement; clinical effectiveness; clinical evaluation; comparative study; controlled study; differential learning; endurance training; ground reaction force; human; kinematics; kinetics; knee function; linear pedagogy; male; motor learning; muscle training; nonlinear pedagogy; outcome assessment; pedagogics; physical education; randomized controlled trial; risk assessment; risk factor; running; soccer; soccer player; software; valgus knee; knee; 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Yaali; Faculty of Physical Education and Sport Sciences, Kharazmi University of Tehran, Tehran, Iran; email: r.yaali@khu.ac.ir","","Elsevier B.V.","01679457","","HMSCD","33965757","English","Hum. Mov. Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85105308364" "Zago M.; Motta A.F.; Mapelli A.; Annoni I.; Galvani C.; Sforza C.","Zago, Matteo (57220045130); Motta, Andrea Francesco (56392530900); Mapelli, Andrea (35206133700); Annoni, Isabella (56016442400); Galvani, Christel (55884230100); Sforza, Chiarella (7005225305)","57220045130; 56392530900; 35206133700; 56016442400; 55884230100; 7005225305","Effect of leg dominance on the center-of-mass kinematics during an inside-of-the-foot kick in amateur soccer players","2014","Journal of Human Kinetics","42","1","","51","61","10","21","10.2478/hukin-2014-0060","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84908144135&doi=10.2478%2fhukin-2014-0060&partnerID=40&md5=63c97a5e260c156f1c49340746fd228d","Laboratory of Movement Analysis, Dipartimento di Scienze Biomediche per la Salute, Università Degli Studi di Milano, Italy; Department of Bioengineering, Politecnico di Milano, Milano, Italy; Department of Psychology, Exercise and Sport Science Degree Course, Catholic University of the Sacred Heart, Milan, Italy; Dipartimento di Scienze Biomediche per la Salute, Facoltà di Medicina e Chirurgia, Università Degli Studi di Milano, via Mangiagalli 31, Milano, 20133, Italy","Zago M., Laboratory of Movement Analysis, Dipartimento di Scienze Biomediche per la Salute, Università Degli Studi di Milano, Italy; Motta A.F., Laboratory of Movement Analysis, Dipartimento di Scienze Biomediche per la Salute, Università Degli Studi di Milano, Italy, Department of Bioengineering, Politecnico di Milano, Milano, Italy; Mapelli A., Laboratory of Movement Analysis, Dipartimento di Scienze Biomediche per la Salute, Università Degli Studi di Milano, Italy; Annoni I., Laboratory of Movement Analysis, Dipartimento di Scienze Biomediche per la Salute, Università Degli Studi di Milano, Italy; Galvani C., Department of Psychology, Exercise and Sport Science Degree Course, Catholic University of the Sacred Heart, Milan, Italy; Sforza C., Dipartimento di Scienze Biomediche per la Salute, Facoltà di Medicina e Chirurgia, Università Degli Studi di Milano, via Mangiagalli 31, Milano, 20133, Italy","Soccer kicking kinematics has received wide interest in literature. However, while the instep-kick has been broadly studied, only few researchers investigated the inside-of-the-foot kick, which is one of the most frequently performed techniques during games. In particular, little knowledge is available about differences in kinematics when kicking with the preferred and non-preferred leg. A motion analysis system recorded the three-dimensional coordinates of reflective markers placed upon the body of nine amateur soccer players (23.0 ± 2.1 years, BMI 22.2 ± 2.6 kg/m2), who performed 30 pass-kicks each, 15 with the preferred and 15 with the non-preferred leg. We investigated skill kinematics while maintaining a perspective on the complete picture of movement, looking for laterality related differences. The main focus was laid on: anatomical angles, contribution of upper limbs in kick biomechanics, kinematics of the body Center of Mass (CoM), which describes the whole body movement and is related to balance and stability. When kicking with the preferred leg, CoM displacement during the ground-support phase was 13% higher (p<0.001), normalized CoM height was 1.3% lower (p<0.001) and CoM velocity 10% higher (p<0.01); foot and shank velocities were about 5% higher (p<0.01); arms were more abducted (p<0.01); shoulders were rotated more towards the target (p<0.01, 6° mean orientation difference). We concluded that differences in motor control between preferred and non-preferred leg kicks exist, particularly in the movement velocity and upper body kinematics. Coaches can use these results to provide effective instructions to players in the learning process, moving their focus on kicking speed and upper body behavior. © 2014 by Chiarella Sforza.","joint angle; laterality; postural control; soccer biomechanics; technical skills","","Bernstein N., The Coordination and Regulation of Movements, (1967); Chandler R.F., Clauser C.E., McConville J.T., Reynolds H.M., Young J.W., Investigation of Inertial Properties of the Human Body, (1975); Chow J., Davids K., Button C., Koh M., Variation in coordination of a discrete multiarticular action as a function of skill level, J Mot Behav, 39, pp. 463-479, (2007); Cohen J., A power primer, Psychol Bull, 112, pp. 155-159, (1992); Della Croce U., Leardini A., Chiari L., Cappozzo A., Human movement analysis using stereophotogrammetry. Part 4, Gait Posture, 21, pp. 226-237, (2005); Dorge H.C., Anderson T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, J Sport Sci, 20, pp. 293-239, (2002); Egan C., Verheul M., Savelsbergh G., Effects of experience on the coordination of internally and externally timed soccer kicks, J Motor Behav, 5, pp. 37-41, (2007); Elias L., Bryden M., Bulman-Fleming M., Footedness is a better predictor than is handedness of emotional lateralization, Neuropsychologia, 36, pp. 37-43, (1998); Filingeri D., Bianco A., Zangla D., Paoli A., Palma A., Is karate effective in improving postural control, Arch Budo, 8, pp. 203-206, (2012); Fletcher I.M., Long C.S., The effects of kicking leg preference on balance ability in elite soccer players, J Athletic Enhancement, 2, pp. 3-6, (2013); Halvorsen K., Eriksson M., Gullstrand L., Tinmark F., Nilsson J., Minimal marker set for center of mass estimation in running, Gait Posture, 30, pp. 552-555, (2009); Hrysomallis C., Balance ability and athletic performance, Sports Med, 413, pp. 221-232, (2009); Imamura R.T., Hreljac A., Escamilla R.F., Edwards W.B., A three-dimensional analysis of the center of mass for three different judo throwing techniques, J Sport Sci Med, 5, pp. 122-131, (2006); Katis A., Giannadakis E., Kannas T., Amiridis I., Kellis E., Lees A., Mechanisms that influence accuracy of the soccer kick, Gait Posture, 23, pp. 125-131, (2013); Katis A., Kellis E., Three-dimensional kinematics and ground reaction forces during the instep and outstep soccer kicks in pubertal players, J Sport Sci, 28, pp. 1233-1241, (2010); Kawamoto R., Miyagi O., Ohashi J., Fukashiro S., Kinetic comparison of a side-foot soccer kick between experienced and inexperienced players, Sports Biomech, 2, pp. 187-198, (2007); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J Sport Sci Med, 6, pp. 154-165, (2007); Kellis E., Katis A., Gissis I., Knee biomechanics of the Support leg in soccer kicks from three angles of approach, Med Sci Sport Exer, 36, pp. 1017-1028, (2004); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, J Sport Sci, 28, pp. 805-817, (2010); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med Sci Sport Exer, 30, pp. 917-929, (1998); Manolopoulos E., Papadopoulos C., Kellis E., Effects of combined strength and kick coordination training on soccer kick biomechanics in amateur players, Scand J Med Sci Sport, 16, pp. 102-110, (2006); Mapelli A., Rodano R., Fiorentini A., Giustolisi A., Sidequersky F.V., Sforza C., Body movements during the off-ice execution of back spins in figure skating, J Electromyogr Kines, 23, pp. 1097-1105, (2013); Mapelli A., Zago M., Fusini L., Galante D., Colombo A., Sforza C., Validation protocol for the estimation of threedimensional body center of mass kinematics in sport, Gait Posture, 39, pp. 460-546, (2014); McCollum G., Leen T.K., Form and exploration of mechanical stability limits in erect stance, J Mot Behav, 21, pp. 225-244, (1989); McLean B.D., Tumilty D.M., Left-right asymmetry in two types of soccer kick, Brit J Sport Med, 27, pp. 260-262, (1993); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, J Sport Sci, 24, pp. 529-541, (2006); O'Reilly J., Wong S.H.S., The development of aerobic and skill assessment in soccer, Sports Med, 42, pp. 1029-1040, (2012); Reilly T., Williams A.M., Nevill A., Franks A., A multidisciplinary approach to talent identification in soccer, J Sport Sci, 18, pp. 695-702, (2000); Russell M., Benton D., Kingsley M., Reliability and construct validity of soccer skills tests that measure passing, shooting, and dribbling, J Sport Sci, 28, pp. 1399-1408, (2000); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sport Biomech, 4, pp. 59-72, (2005); Teixeira M.C.T., Teixeira L.A., Leg preference and interlateral performance asymmetry in soccer player children, Dev Psychobiol, 50, pp. 799-806, (2008); Verrel J., Pologe S., Manselle W., Lindenberger U., Woollacott M., Coordination of degrees of freedom and stabilization of task variables in a complex motor skill: Expertise-related differences in cello bowing, Exp Brain Res, 224, pp. 323-324, (2013); Wagner H., Tilp M., Kinematic analysis of volleyball jump, Int J Sports Med, 30, pp. 760-765, (2009); Winter D.A., Biomechanics and Motor Control of Human Movement, (1990)","","","Polish Academy of Science, Committee of Physical Culture","16405544","","","","English","J. Hum. Kinet.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-84908144135" "King M.G.; Heerey J.J.; Schache A.G.; Semciw A.I.; Middleton K.J.; Sritharan P.; Lawrenson P.R.; Crossley K.M.","King, Matthew G. (55636112000); Heerey, Joshua J. (57200082291); Schache, Anthony G. (6602235911); Semciw, Adam I. (55022720000); Middleton, Kane J. (57202472881); Sritharan, Prasanna (55151572300); Lawrenson, Peter R. (57217122229); Crossley, Kay M. (7004850146)","55636112000; 57200082291; 6602235911; 55022720000; 57202472881; 55151572300; 57217122229; 7004850146","Lower limb biomechanics during low- and high-impact functional tasks differ between men and women with hip-related groin pain","2019","Clinical Biomechanics","68","","","96","103","7","21","10.1016/j.clinbiomech.2019.06.001","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85066810791&doi=10.1016%2fj.clinbiomech.2019.06.001&partnerID=40&md5=90744d8179303789fc415b3a37e44328","La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Victoria, Australia; School of Health and Rehabilitation Sciences, University of Queensland, St Lucia, Queensland, Australia","King M.G., La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Victoria, Australia; Heerey J.J., La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Victoria, Australia; Schache A.G., La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Victoria, Australia; Semciw A.I., La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Victoria, Australia; Middleton K.J., La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Victoria, Australia; Sritharan P., La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Victoria, Australia; Lawrenson P.R., School of Health and Rehabilitation Sciences, University of Queensland, St Lucia, Queensland, Australia; Crossley K.M., La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Victoria, Australia","Background: The effect of pain on lower limb biomechanics during walking has been found to be sex specific for certain joint diseases. However, it is not known if sex is an effect-modifier in people with hip pain. Therefore, the aim of the study was to determine the differences in lower limb biomechanics between men and women with hip-related groin pain during functional tasks. Methods: 65 male and 23 female football players with hip-related groin pain were recruited. Biomechanical data were recorded during walking and the single-leg drop jump. Hip, knee and ankle joint kinematics and kinetics were calculated. Differences between men and women were assessed using statistical parametric mapping. Findings: Walking: Men with hip-related groin pain walked with lower hip flexion and internal rotation angles during stance compared to women. During different sections of stance, men also displayed a lower hip adduction angle and ‘external’ adduction moment, a lower knee flexion angle and ‘external’ flexion moment, as well as greater ‘external’ dorsi-flexion moment and impulse. Single-leg drop jump: Men with hip-related groin pain displayed a lower hip flexion angle during early stance, and greater ‘external’ knee flexion and ankle dorsi-flexion moments. The impulse of the ‘external’ dorsi-flexion moment was also greater for men compared to women. Interpretation: Men and women with hip-related groin pain display differing lower limb biomechanics in both low and high impact tasks. Sex may therefore be a potential effect modifier in people with hip-related groin pain. Future research in this area should incorporate sex-specific analyses. Trial registration number: NA. © 2019 Elsevier Ltd","Biomechanics; Femoroacetabular impingement; Gait; Hip; Hip pain; Walking","Adolescent; Adult; Ankle; Ankle Joint; Arthralgia; Biomechanical Phenomena; Cross-Sectional Studies; Female; Gait; Groin; Hip; Hip Joint; Humans; Knee; Knee Joint; Lower Extremity; Male; Middle Aged; Pain Management; Pain Measurement; Range of Motion, Articular; Rotation; Soccer; Walking; Young Adult; Biomechanics; Biophysics; Drops; Health; Hot isostatic pressing; Joints (anatomy); Biomechanical data; Femoroacetabular impingement; Gait; Internal rotations; Knee flexion angle; Registration number; Statistical parametric mapping; Walking; adult; ankle; arthropathy; Article; biomechanics; cross-sectional study; daily life activity; female; femoroacetabular impingement; football player; gait; hip; hip pain; human; inguinal pain; joint mobility; kinematics; knee; knee function; leg movement; lower limb; major clinical study; male; middle aged; pelvis radiography; physical activity; priority journal; quality of life; recreation; sex difference; sport; standing; symptom; task performance; walking; young adult; adolescent; analgesia; arthralgia; biomechanics; hip; inguinal region; joint characteristics and functions; lower limb; pain measurement; pathophysiology; procedures; rotation; soccer; Physiological models","Baker R., Pelvic angles: a mathematically rigorous definition which is consistent with a conventional clinical understanding of the terms, Gait Posture, 13, 1, pp. 1-6, (2001); Bruening D.A., Et al., Sex differences in whole body gait kinematics at preferred speeds, Gait Posture, 41, 2, pp. 540-545, (2015); Cho S.H., Park J.M., Kwon O.Y., Gender differences in three dimensional gait analysis data from 98 healthy Korean adults, Clin. Biomech., 19, 2, pp. 145-152, (2004); Chumanov E.S., Wall-Scheffler C., Heiderscheit B.C., Gender differences in walking and running on level and inclined surfaces, Clin. Biomech., 23, 10, pp. 1260-1268, (2008); Crossley K.M., Et al., Femoroacetabular impingement and hip OsteoaRthritis cohort (FORCe): protocol for a prospective study, J. Physiother., 64, 1, (2018); Freke M.D., Et al., Physical impairments in symptomatic femoroacetabular impingement: a systematic review of the evidence, Br. J. Sports Med., 50, 19, (2016); Freke M., Et al., Hip strength and range of movement are associated with dynamic postural control performance in individuals scheduled for arthroscopic hip surgery, J. Orthop. Sports Phys. Ther., 48, 4, pp. 280-288, (2018); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: application to the knee, J. Biomech. Eng., 105, 2, pp. 136-144, (1983); Hurd W.J., Et al., Differences in normal and perturbed walking kinematics between male and female athletes, Clin. Biomech., 19, 5, pp. 465-472, (2004); Kaufman K.R., Et al., Gait characteristics of patients with knee osteoarthritis, J. Biomech., 34, 7, pp. 907-915, (2001); Kellgren J.H., Lawrence J.S., Radiological assessment of osteo-arthrosis, Ann. Rheum. Dis., 16, 4, pp. 494-502, (1957); Kemp J.L., Et al., A phase II trial for the efficacy of physiotherapy intervention for early-onset hip osteoarthritis: study protocol for a randomised controlled trial, Trials, 16, (2015); King M.G., Et al., Sub-elite football players with hip-related groin pain and a positive flexion, adduction, and internal rotation test exhibit distinct biomechanical differences compared with the asymptomatic side, J. Orthop. Sports Phys. Ther., 48, 7, pp. 584-593, (2018); King M.G., Et al., Lower limb biomechanics in femoroacetabular impingement syndrome: a systematic review and meta-analysis, Br. J. Sports Med., 52, 9, pp. 566-580, (2018); Lephart S.M., Et al., Gender differences in strength and lower extremity kinematics during landing, Clin. Orthop. Relat. Res., 401, pp. 162-169, (2002); Lewis C.L., Khuu A., Loverro K.L., Gait alterations in Femoroacetabular impingement syndrome differ by sex, J. Orthop. Sports Phys. Ther., 48, 8, pp. 649-658, (2018); Lewis C.L., Loverro K.L., Khuu A., Kinematic differences during single-leg step-down between individuals with femoroacetabular impingement syndrome and individuals without hip pain, J. Orthop. Sports Phys. Ther., 48, 4, pp. 270-279, (2018); McKean K.A., Et al., Gender differences exist in osteoarthritic gait, Clin. Biomech., 22, 4, pp. 400-409, (2007); Meyer C.A.G., Et al., Hip movement pathomechanics of patients with hip osteoarthritis aim at reducing hip joint loading on the osteoarthritic side, Gait Posture, 59, pp. 11-17, (2018); Mohtadi N.G., Et al., The development and validation of a self-administered quality-of-life outcome measure for young, active patients with symptomatic hip disease: the international hip outcome tool (iHOT-33), Arthroscopy, 28, 5, pp. 595-605, (2012); Nigg B.M., Et al., Gender differences in lower extremity gait biomechanics during walking using an unstable shoe, Clin. Biomech., 25, 10, pp. 1047-1052, (2010); Schache A.G., Baker R., On the expression of joint moments during gait, Gait Posture, 25, 3, pp. 440-452, (2007); Schache A.G., Et al., Effect of running speed on lower limb joint kinetics, Med. Sci. Sports Exerc., 43, 7, pp. 1260-1271, (2011); Schmitz R.J., Et al., Sex differences in lower extremity biomechanics during single leg landings, Clin. Biomech., 22, 6, pp. 681-688, (2007); Sport Australia, AusPlay - Participation Data for the Sport Sector, (2016); Thorborg K., Et al., The Copenhagen hip and groin outcome score (HAGOS): development and validation according to the COSMIN checklist, Br. J. Sports Med., 45, 6, pp. 478-491, (2011); Thorborg K., Et al., Patient-reported outcome (PRO) questionnaires for young to middle-aged adults with hip and groin disability: a systematic review of the clinimetric evidence, Br. J. Sports Med., 49, 12, (2015); Thorborg K., Et al., Prevalence and severity of hip and groin pain in sub-elite male football: a cross-sectional cohort study of 695 players, Scand. J. Med. Sci. Sports, 27, 1, pp. 107-114, (2017); Weir A., Et al., Doha agreement meeting on terminology and definitions in groin pain in athletes, Br. J. Sports Med., 49, 12, pp. 768-774, (2015)","K.M. Crossley; La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Australia; email: k.crossley@latrobe.edu.au","","Elsevier Ltd","02680033","","CLBIE","31181339","English","Clin. Biomech.","Article","Final","","Scopus","2-s2.0-85066810791" "Andrašić S.; Gušić M.; Stanković M.; Mačak D.; Bradić A.; Sporiš G.; Trajković N.","Andrašić, Slobodan (57201325237); Gušić, Marko (57201323425); Stanković, Mima (57224006194); Mačak, Draženka (57215866587); Bradić, Asim (26322311400); Sporiš, Goran (22235390100); Trajković, Nebojša (55092863600)","57201325237; 57201323425; 57224006194; 57215866587; 26322311400; 22235390100; 55092863600","Speed, change of direction speed and reactive agility in adolescent soccer players: Age related differences","2021","International Journal of Environmental Research and Public Health","18","11","5883","","","","19","10.3390/ijerph18115883","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85106709211&doi=10.3390%2fijerph18115883&partnerID=40&md5=cfa8301cfe8f6832fc9f7dc03790a8a8","Faculty of Economics, University of Novi Sad, Subotica, 24000, Serbia; Faculty of Sport and Physical Education, University of Novi Sad, Novi Sad, 21000, Serbia; Faculty of Sport and Physical Education, University of Niš, Niš, 18000, Serbia; Faculty of Kinesiology, University of Zagreb, Zagreb, 10000, Croatia","Andrašić S., Faculty of Economics, University of Novi Sad, Subotica, 24000, Serbia; Gušić M., Faculty of Sport and Physical Education, University of Novi Sad, Novi Sad, 21000, Serbia; Stanković M., Faculty of Sport and Physical Education, University of Niš, Niš, 18000, Serbia; Mačak D., Faculty of Sport and Physical Education, University of Novi Sad, Novi Sad, 21000, Serbia; Bradić A., Faculty of Kinesiology, University of Zagreb, Zagreb, 10000, Croatia; Sporiš G., Faculty of Kinesiology, University of Zagreb, Zagreb, 10000, Croatia; Trajković N., Faculty of Sport and Physical Education, University of Niš, Niš, 18000, Serbia","There are a plethora of studies investigating agility in soccer; however, studies have rarely presented the reaction time in differentiating age groups in adolescent soccer players. We investigated age differences in reactive agility, speed, and change of direction speed (CODs), in a group of highly trained adolescent soccer players. A total of 75 adolescent male soccer players (aged 14–19 years) were recruited. The players were grouped based on their age to under 15 (U15; n = 27), under 17 (U17; n = 25), and under 19 (U19; n = 23) players. Players were tested for 5 m, 10 m, and 20 m sprint, CODs speed test, Illinois test, and reactive agility test (total and reaction time). Only the reactive agility test with a live tester (RAT live) and RAT live reaction time (RAT live RT) distinguished U19 from both groups, U17 (RAT live, p < 0.01; RAT RT live, p < 0.01) and U15 (RAT live, p < 0.01; RAT RT live, p < 0.01). Groups did not have different times for 5 m sprint, RAT light and RAT RT light, F = 0.472, 2.691, 1.023, respectively, p > 0.05. Moreover, a significantly slower average performance of sprint 20, CODs left and right, and Illinois was also observed in U15 as compared to U17 and U19 (p < 0.05). We can conclude that results in agility tests that include live testers can be a significant factor that differentiates between adolescent soccer players considering their age. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.","Agility; Differences; Football; Performance; Youth","Adolescent; Athletic Performance; Humans; Illinois; Male; Reaction Time; Running; Soccer; age structure; biomechanics; performance assessment; physical activity; sport; velocity; young population; adolescent; agility; animal experiment; article; football; human; Illinois; juvenile; male; nonhuman; rat; reaction time; soccer player; velocity; athletic performance; running; soccer","Bradley P.S., Sheldon W., Wooster B., Olsen P., Boanas P., Krustrup P., High-intensity running in English FA Premier League soccer matches, J. 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Physiol, 9, (2018); Dolan K., Reactive Agility, Core Strength, Balance, and Soccer Performance, (2013); Williams A.M., Ward P., Smeeton N., Allen D., Developing Anticipation Skills in Tennis Using On-Court Instruction: Perception versus Perception and Action, J. Appl. Sport Psychol, 16, pp. 350-360, (2004); Williams A.M., Davids K., Williams J.G., Visual Perception and Action in Sport E&F Spon, (1999); Mann D.T., Williams A.M., Ward P., Janelle C.M., Perceptual-Cognitive Expertise in Sport: A Meta-Analysis, J. Sport Exerc. Psychol, 29, pp. 457-478, (2007); Trecroci A., Longo S., Perri E., Iaia F.M., Alberti G., Field-based physical performance of elite and sub-elite middle-adolescent soccer players, Res. Sports Med, 27, pp. 60-71, (2019); Trajkovic N., Sporis G., Kristicevic T., Madic D.M., Bogataj S., The Importance of Reactive Agility Tests in Differentiating Adolescent Soccer Players, Int. J. Environ. Res. Public Health, 17, (2020); Horicka P., Simonek J., Brodani J., Diagnostics of reactive and running agility in young football players, Phys. Act. Rev, 6, pp. 29-36, (2018); Dellal A., Wong del P., Moalla W., Chamari K., Physical and technical activity of soccer players in the French First League-with special reference to their playing position, Int. Sport J, 11, pp. 278-290, (2010); Chaouachi A., Chtara M., Hammami R., Chtara H., Turki O., Castagna C., Multidirectional Sprints and Small-Sided Games Training Effect on Agility and Change of Direction Abilities in Youth Soccer, J. Strength Cond. Res, 28, pp. 3121-3127, (2014); Daneshjoo A., Mokhtar A.H., Rahnama N., Yusof A., Effects of the 11+ and Harmoknee Warm-up Programs on Physical Performance Measures in Professional Soccer Players, J. Sports Sci. Med, 12, pp. 489-496, (2013); Deprez D., Fransen J., Boone J., Lenoir M., Philippaerts R., Vaeyens R., Characteristics of high-level youth soccer players: Variation by playing position, J. Sports Sci, 33, pp. 243-254, (2015); Harris N.K., Cronin J.B., Hopkins W.G., Hansen K.T., Relationship Between Sprint Times and the Strength/Power Outputs of a Machine Squat Jump, J. Strength Cond. Res, 22, pp. 691-698, (2008); Krolo A., Gilic B., Foretic N., Pojskic H., Hammami R., Spasic M., Uljevic O., Versic S., Sekulic D., Agility Testing in Youth Football (Soccer)Players; Evaluating Reliability, Validity, and Correlates of Newly Developed Testing Protocols, Int. J. Environ. Res. Public Health, 17, (2020); Waldron M., Murphy A., A comparison of physical abilities and match performance characteristics among elite and subelite under-14 soccer players, Pediatr. Exerc. Sci, 25, pp. 423-434, (2013); Lloyd R.S., Oliver J.L., The youth physical development model: A new approach to long-term athletic development, Strength Cond. J, 34, pp. 61-72, (2012); Deprez D., Buchheit M., Fransen J., Pion J., Lenoir M., Philippaerts R.M., Vaeyens R., A Longitudinal Study Investigating the Stability of Anthropometry and Soccer-Specific Endurance in Pubertal High-Level Youth Soccer Players, J. Sports Sci. Med, 14, pp. 418-426, (2015); Gabbett T.J., Kelly J.N., Sheppard J.M., Speed, Change of Direction Speed, and Reactive Agility of Rugby League Players, J. Strength Cond. Res, 22, pp. 174-181, (2008); Paul D.J., Gabbett T.J., Nassis G.P., Agility in Team Sports: Testing, Training and Factors Affecting Performance, Sports Med, 46, pp. 421-442, (2016); Sekulic D., Gilic B., Foretic N., Spasic M., Uljevic O., Versic S., Fitness profiles of professional futsal players: Identifying age-related differences, Biomed. Hum. Kinet, 12, pp. 212-220, (2020); Yanci J., Arcos A.L., Salinero J.J., Mendiguchia J., Gil E., Santesteban D., Grande I., Effects of different agility training programs among first-grade elementary school students, Coll. Antropol, 39, pp. 87-92, (2015); Reilly T., Atkinson G., Edwards B., Waterhouse J., Farrelly K., Fairhurst E., Diurnal Variation in Temperature, Mental and Physical Performance, and Tasks Specifically Related to Football (Soccer), Chronobiol Int, 24, pp. 507-519, (2007)","N. Trajković; Faculty of Sport and Physical Education, University of Niš, Niš, 18000, Serbia; email: nele_trajce@yahoo.com","","MDPI AG","16617827","","","34070867","English","Int. J. Environ. Res. Public Health","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85106709211" "Kvist J.; Good L.; Tagesson S.","Kvist, Joanna (6701797719); Good, Lars (7005608314); Tagesson, Sofi (8636310700)","6701797719; 7005608314; 8636310700","Changes in knee motion pattern after anterior cruciate ligament injury - A case report","2007","Clinical Biomechanics","22","5","","551","556","5","23","10.1016/j.clinbiomech.2007.01.003","https://www.scopus.com/inward/record.uri?eid=2-s2.0-34247474418&doi=10.1016%2fj.clinbiomech.2007.01.003&partnerID=40&md5=89ee6b159bacaa7699f940a86c9b8aa6","Division of Physiotherapy, Department of Health and Society, Faculty of Health Sciences, SE-581 83 Linköping, Sweden; Division of Orthopaedics and Sports Medicine, Department of Neuroscience and Locomotion, Faculty of Health Sciences, SE-581 85 Linköping, Sweden","Kvist J., Division of Physiotherapy, Department of Health and Society, Faculty of Health Sciences, SE-581 83 Linköping, Sweden; Good L., Division of Orthopaedics and Sports Medicine, Department of Neuroscience and Locomotion, Faculty of Health Sciences, SE-581 85 Linköping, Sweden; Tagesson S., Division of Physiotherapy, Department of Health and Society, Faculty of Health Sciences, SE-581 83 Linköping, Sweden","Background: After an anterior cruciate ligament injury, the contra-lateral non-injured leg has been found to adapt towards the injured leg. Accordingly, in order to study changes in knee motion pattern after an anterior cruciate ligament injury, the ideal is to compare the same leg prior to and after the injury. However, this is very seldom possible. The purpose of the present study was to describe changes in static and dynamic sagittal tibial translation, electromyographic activity and muscle torque relevant to an anterior cruciate ligament tear in one patient evaluated both before and after the injury. Methods: A male soccer player was examined 11 weeks before and eight weeks after an anterior cruciate ligament injury. Sagittal tibial translation was measured with the CA-4000 electrogoniometer; statically during Lachman's test, and dynamically during isokinetic muscle testing, one-legged squat and level walking. The electromyographic activity of mm. quadriceps and hamstrings, was registered simultaneously during the one-legged squat test. Findings: Static tibial translation was increased by ∼2 mm, while dynamic tibial translation was decreased by 0.4 mm at isokinetic testing, 0.9 mm at one-legged squat and 2.4 mm during level walking compared to before the injury. Muscle torque decreased 30% and 35% for the quadriceps and the hamstrings muscle, respectively. The electromyographic activity revealed similar activation levels in quadriceps and a doubled level of activation in hamstring compared to before the injury. Interpretation: In spite of an increase in static tibial translation eight weeks after an anterior cruciate ligament injury, the tibial translation decreased during activity, thus indicating that the patient could stiffen the knee in order to protect it against increased shear forces. © 2007 Elsevier Ltd. All rights reserved.","Anterior cruciate ligament; EMG; Functional stability; Knee kinematics; Tibial translation","Adaptation, Physiological; Adult; Anterior Cruciate Ligament; Humans; Knee Joint; Male; Muscle Contraction; Muscle, Skeletal; Range of Motion, Articular; Biomedical engineering; Electromyography; Ligaments; Motion estimation; Muscle; anterior cruciate ligament injury; article; athlete; case report; electromyography; hamstring; human; isokinetic exercise; knee function; male; priority journal; quadriceps femoris muscle; tibia; torque; walking; Anterior cruciate ligament; Functional stability; Knee kinematics; Shear forces; Tibial translation; Biomechanics","Ageberg E., Zatterstrom R., Moritz U., Friden T., Influence of supervised and nonsupervised training on postural control after an acute anterior cruciate ligament rupture: a three-year longitudinal prospective study, J. Orthop. Sports Phys. Ther., 31, pp. 632-644, (2001); Bach Jr. B.R., Warren R.F., Flynn W.M., Kroll M., Wickiewiecz T.L., Arthrometric evaluation of knees that have a torn anterior cruciate ligament, J. Bone Joint Surg. Am., 72, pp. 1299-1306, (1990); Berchuck M., Andriacchi T.P., Bach B.R., Reider B., Gait adaptations by patients who have a deficient anterior cruciate ligament, J. Bone Joint Surg. Am., 72, pp. 871-877, (1990); Bynum E.B., Barrack R.L., Alexander A.H., Open versus closed chain kinetic exercises after anterior cruciate ligament reconstruction. A prospective randomized study, Am. J. Sports Med., 23, pp. 401-406, (1995); Dahlberg L., Roos H., Saxne T., Heinegard D., Lark M.W., Hoerrner L.A., Lohmander L.S., Cartilage metabolism in the injured and uninjured knee of the same patient, Ann. Rheum. Dis., 53, pp. 823-827, (1994); Devita P., Hortobagyi T., Barrier J., Torry M., Glover K.L., Speroni D.L., Money J., Mahar M.T., Gait adaptations before and after anterior cruciate ligament reconstruction surgery, Med. Sci. Sports Exerc., 29, pp. 853-859, (1997); Fahrer H., Rentsch H.U., Gerber N.J., Beyeler C., Hess C.W., Grunig B., Knee effusion and reflex inhibition of the quadriceps. A bar to effective retraining, J. Bone Joint Surg., 70, pp. 635-638, (1988); Gillquist J., Messner K., Instrumented analysis of the pivot shift phenomenon after reconstruction of the anterior cruciate ligament, Int. J. Sports Med., 16, pp. 484-488, (1995); Kvist J., Sagittal plane translation during level walking in poor-functioning and well-functioning patients with anterior cruciate ligament deficiency, Am. J. Sports Med., 32, pp. 1250-1255, (2004); Kvist J., Sagittal tibial translation during exercises in the anterior cruciate ligament-deficient knee, Scand. J. Med. Sci. Sports, 15, pp. 148-158, (2005); Kvist J., Gillquist J., Anterior positioning of tibia during motion after anterior cruciate ligament injury, Med. Sci. Sports Exerc., 33, pp. 1063-1072, (2001); Kvist J., Gillquist J., Sagittal plane knee translation and electromyographic activity during closed and open kinetic chain exercises in anterior cruciate ligament-deficient patients and control subjects, Am. J. Sports Med., 29, pp. 72-82, (2001); Li G., Rudy T.W., Sakane M., Kanamori A., Ma C.B., Woo S.L., The importance of quadriceps and hamstring muscle loading on knee kinematics and in situ forces in the ACL, J. Biomech., 32, pp. 395-400, (1999); Pandy M.G., Shelburne K.B., Dependence of cruciate-ligament loading on muscle forces and external load, J. Biomech., 30, pp. 1015-1024, (1997); Renstrom P., Arms S.W., Stanwyck T.S., Johnson R.J., Pope M.H., Strain within the anterior cruciate ligament during hamstring and quadriceps activity, Am. J. Sports Med., 14, pp. 83-87, (1986); Shelbourne K.D., Nitz P., Accelerated rehabilitation after anterior cruciate ligament reconstruction, Am. J. Sports Med., 18, pp. 292-299, (1990); Simonsen E.B., Magnusson S.P., Bencke J., Naesborg H., Havkrog M., Ebstrup J.F., Sorensen H., Can the hamstring muscles protect the anterior cruciate ligament during a side-cutting maneuver?, Scand. J. Med. Sci. Sports, 10, pp. 78-84, (2000); Torry M.R., Decker M.J., Viola R.W., O'Connor D.D., Steadman J.R., Intra-articular knee joint effusion induces quadriceps avoidance gait patterns, Clin. Biomech., 15, pp. 147-159, (2000); Vergis A., Hammarby S., Gillquist J., Fluoroscopic validation of electrogoniometrically measured femorotibial translation in healthy and ACL deficient subjects, Scand. J. Med. Sci. Sports, 12, pp. 223-229, (2002); Wexler G., Hurwitz D.E., Bush-Joseph C.A., Andriacchi T.P., Bach Jr. B.R., Functional gait adaptations in patients with anterior cruciate ligament deficiency over time, Clin. Orthop., pp. 166-175, (1998); Yoo J.D., Papannagari R., Park S.E., DeFrate L.E., Gill T.J., Li G., The effect of anterior cruciate ligament reconstruction on knee joint kinematics under simulated muscle loads, Am. J. Sports Med., 33, pp. 240-246, (2005)","J. Kvist; Division of Physiotherapy, Department of Health and Society, Faculty of Health Sciences, SE-581 83 Linköping, Sweden; email: Joanna.Kvist@ihs.liu.se","","","02680033","","CLBIE","17321020","English","Clin. Biomech.","Article","Final","","Scopus","2-s2.0-34247474418" "Mangus B.C.; Wallmann H.W.; Ledford M.","Mangus, Brent C. (6507975746); Wallmann, Harvey W. (6602803783); Ledford, Matthew (8262875100)","6507975746; 6602803783; 8262875100","Soccer: Analysis of postural stability in collegiate soccer players before and after an acute bout of heading multiple Soccer balls","2004","Sports Biomechanics","3","2","","209","220","11","22","10.1080/14763140408522841","https://www.scopus.com/inward/record.uri?eid=2-s2.0-16644396692&doi=10.1080%2f14763140408522841&partnerID=40&md5=203bb0814dd164956273c556f7890421","Department of Kinesiology, University of Nevada, Las Vegas, United States; Department of Physical Therapy, University of Nevada, Las Vegas, United States; University of Nevada, Las Vegas, United States","Mangus B.C., Department of Kinesiology, University of Nevada, Las Vegas, United States; Wallmann H.W., Department of Physical Therapy, University of Nevada, Las Vegas, United States; Ledford M., University of Nevada, Las Vegas, United States","The aim of our study was to determine if any immediate changes in balance were discernable in college soccer players after a specially designed heading session. Eight male and two female skilled collegiate soccer players had a baseline balance pre‐test using the Balance Master, followed by heading 20 balls kicked consecutively by a teammate from the touchline to a point near the goal, which was followed by a post‐test using the same testing technique. Paired t‐tests were used to compare balance ability between pre‐ and post‐test conditions. There was no difference in balance pre‐ to post‐test (85.3% and 86.2% respectively). No significant difference was noted from pre‐ to post‐test in the mean equilibrium scores for conditions three through six on the Sensory Organization Test, with the exception of condition four, which revealed a significant increase from pre‐ to post‐test. We concluded that an acute session of heading soccer balls may not result in balance changes in collegiate soccer players. © 2004 Taylor & Francis Group, LLC. All rights reserved.","Balance changes; Heading; Neurocom balance master","Adult; Anthropometry; Biomechanics; Brain Concussion; Cohort Studies; Female; Humans; Male; Musculoskeletal Equilibrium; Neuropsychological Tests; Probability; Reaction Time; Risk Assessment; Soccer; adult; anthropometry; article; biomechanics; body equilibrium; brain concussion; cohort analysis; comparative study; female; human; injury; male; neuropsychological test; physiology; probability; reaction time; risk assessment; sport","Injuries in youth soccer: A subject review, Pediatrics, 105, pp. 659-661, (2000); Asken M., Schwartz R.C., Heading the ball in soccer: What's the risk of brain injury?, Physician and Sports Medicine, 26, pp. 37-44, (1998); Camicioli R., Panzer V.P., Kaye J., Balance in the healthy elderly: Posturography and clinical assessment, Archives of Neurology, 54, pp. 976-981, (1997); Eaton L., Coroner cites football as reason for brain injury, British Medical Journal, 325, (2002); Goebel J.A., Sataloff R.T., Hanson J.M., Nashner L.M., Hirshout D.S., Sokolow C.C., Posturographic evidence of nonorganic sway patterns in normal subjects, patients, and suspected malingerers, Otolaryngology and Head and Neck Surgery, 117, pp. 293-302, (1997); Green G.A., Jordan S.E., Are brain injuries a significant problem in soccer?, Clinics in Sports Medicine, 17, pp. 795-809, (1998); Guskiewicz K.M., Perrin D.H., Gnasneder B.M., Effect of mild head injury on postural stability in athletes, Journal of Athletic Training, 31, pp. 300-306, (1996); Guskiewicz K.M., Ross S.E., Marshall S.W., Postural stability and neuropsychological deficits after concussion in collegiate athletes, Journal of Athletic Training, 36, pp. 263-273, (2001); Guskiewicz K.M., Marshall S.W., Broglio S.P., Cantu R.C., Kirkendall D.T., No evidence of impaired neurocognitive performance in collegiate soccer players, American Journal of Sports Medicine, 30, pp. 157-162, (2002); Jordan S.E., Green G.A., Galanty H.L., Mandelbaum B.R., Jabour B.A., Acute and chronic brain injury in United States National Team soccer players, American Journal of Sports Medicine, 24, pp. 205-210, (1996); Junge A., Rosch D., Peterson L., Graf-Baumann T., Dvorak J., Prevention of soccer injuries: A prospective intervention study in youth amateur players, American Journal of Sports Medicine, 30, pp. 652-659, (2002); Maki B.E., Holliday P.J., Topper A.K., A prospective study of postural balance and risk of falling in an ambulatory and independent elderly population, Journal of Gerontology, 49, pp. M72-M84, (1994); Manchester D., Woollacott M., Zederbauer-Hylton N., Marin O., Visual, vestibular and somatosensory contributions to balance control in the older adult, Journal of Gerontology, 44, pp. M118-M127, (1989); Matser J.T., Kessels A.G., Jordan B.D., Lezak M.D., Troost J., Chronic traumatic brain injury in professional soccer players, Neurology, 51, pp. 791-796, (1998); Matser E.J., Kessels A.G., Lezak M.D., Jordan B.D., Troost J., Neuropsychological impairment in amateur soccer players, Journal of the American Medical Association, 282, pp. 971-973, (1999); Monsell E.M., Furman J.M., Herdman S.J., Konrad H.R., Shepard N.T., Computerized dynamic platform posturography, Otolaryngology and Head and Neck Surgery, 117, pp. 394-398, (1997); Mrazik M., Ferrara M.S., Peterson C.L., Elliott R.E., Courson R.W., Clanton M.D., Et al., Injury severity and neuropsychological and balance outcomes of four college athletes, Brain Injury, 14, pp. 921-931, (2000); Nashner L., Sensory, neuromuscular, and biomechanical contributions to human balance, Balance: Proceedings of the APTA Forum, (1990); Naunheim R.S., Bayly P.V., Standeven J., Neubauer J.S., Lewis L.M., Genin G.M., Linear and angular head accelerations during heading of a soccer ball, Medicine and Science in Sports and Exercise, 35, pp. 1406-1412, (2003); Smart Balance Master System, (1994); Paloski W.H., Black F.O., Reschke M.F., Calkins D.S., Shupert C., Vestibular ataxia following shuttle flights: Effects of microgravity on otolith-mediated sensorimotor control of posture, American Journal of Otolology, 14, pp. 9-17, (1993); Putukian M., Echemendia R.J., Mackin S., The acute neuropsychological effects of heading in soccer: A pilot study, Clinical Journal of Sport Medicine, 10, pp. 104-109, (2000); Rahnama N., Reilly T., Lees A., Injury risk associated with playing actions during competitive soccer, British Journal of Sports Medicine, 36, pp. 354-359, (2002); Schmidt-Olsen S., Bunemann L.K., Lade V., Brassoe J.O., Soccer injuries of youth, British Journal of Sports Medicine, 19, pp. 161-164, (1985); Shepard N.T., Practical Management of the Balance Disorder Patient, (1992); Teasdale N., Bard C., Larue J., Fleury M., On the cognitive penetrability of posture control, Experimental Aging Research, 19, pp. 1-13, (1993); Tysvaer A.T., Storli O.V., Soccer injuries to the brain. A neurologic and electroencephalographic study of active football players, American Journal of Sports Medicine, 17, pp. 573-578, (1989); Weber P.C., Cass S.P., Clinical assessment of postural stability, American Journal of Otolology, 14, pp. 566-569, (1993); Whipple R., Wolfson L., Derby C., Singh D., Tobin J., Altered sensory function and balance in older persons, Journal of Gerontology, 48, pp. 71-76, (1993); Wigglesworth J., Dayhoff N., Suhrheinrich J., The reliability of four measures of postural control using the Smart Balance Master, Journal of the American College of Sports Medicine, 29, pp. M93-M98, (1996); Wolfson L., Whipple R., Derby C.A., Amerman P., Murphy T., Tobin J.N., Et al., A dynamic posturography study of balance in healthy elderly, Neurology, 42, pp. 2069-2075, (1992)","","","","14763141","","","15552581","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-16644396692" "Naito K.; Fukui Y.; Maruyama T.","Naito, Kozo (35368941700); Fukui, Yosuke (36436919600); Maruyama, Takeo (55796621321)","35368941700; 36436919600; 55796621321","Energy redistribution analysis of dynamic mechanisms of multi-body, multi-joint kinetic chain movement during soccer instep kicks","2012","Human Movement Science","31","1","","161","181","20","21","10.1016/j.humov.2010.09.006","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84856594465&doi=10.1016%2fj.humov.2010.09.006&partnerID=40&md5=775b52e8b08c287b14ee9421e5cacdca","Biomechanics Laboratory, Athletic Trainer Group, Hamamatsu Medical Care Institute, Hamamatsu, Japan; Graduate School of Decision Science and Technology, Tokyo Institute of Technology, Tokyo, Japan","Naito K., Biomechanics Laboratory, Athletic Trainer Group, Hamamatsu Medical Care Institute, Hamamatsu, Japan; Fukui Y., Graduate School of Decision Science and Technology, Tokyo Institute of Technology, Tokyo, Japan; Maruyama T., Graduate School of Decision Science and Technology, Tokyo Institute of Technology, Tokyo, Japan","The purpose of this study is to develop a model to analyze energy redistribution mechanisms of a multi-joint limb system and to examine the mechanisms underlying the production of the mechanical energy of the system during instep kicking. Kicking movements of 11 collegiate soccer players were recorded using a motion capture system, and ground reaction force during kicks was measured. Using the experimental data and the state-space power analysis developed in the current study, the kinetic energy change of the modeled segments was decomposed into causal components due to various dynamic factors (muscular and non-muscular interactive moments). The results showed that the increase of the kinetic energy of the kicking limb resulted from the energy transfer mechanisms between the decelerated segment (a proximal segment) and accelerated segment (a distal segment), induced by a non-muscular interactive moment due to the external joint force or the centrifugal force. The proximal (thigh) to distal (shank) sequential motion pattern observed was due to the energy transfer mechanism induced by the centrifugal effect acting to accelerate the shank and decelerate the thigh. The fact suggests that effective use of that mechanism may be advantageous to enhance the kinetic energy of the kicking shank. In conclusion, energy transfer mechanisms likely play a greater role in dynamic kicking than muscle power output, and better coordination to exchange kinetic energy among segments makes kicking more efficient. © 2011 Elsevier B.V.","Energy transfer; Instep kick; Kinetic chain; Kinetic energy; Multi-joint","Athletic Performance; Biomechanics; Energy Transfer; Humans; Imaging, Three-Dimensional; Isometric Contraction; Joints; Leg; Male; Microcomputers; Muscle, Skeletal; Psychophysics; Soccer; Video Recording; Weight-Bearing; Young Adult; adult; article; athlete; body height; body mass; energy expenditure; energy transfer; foot; force; human; human experiment; joint function; kinetics; leg movement; mechanical torsion; motor coordination; muscle strength; sport; thigh; velocity","Asami T., Togashi H., Study on kicking in soccer, Japan Journal of Physical Education, Health and Sport Sciences, 12, pp. 267-272, (1968); Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, Journal of Sports Sciences, 24, pp. 951-960, (2006); Chowdhary A.G., Challis J.H., Timing accuracy in human throwing, Journal of Theoretical Biology, 201, pp. 219-229, (1999); Chowdhary A.G., Challis J.H., The biomechanics of an overarm throwing task: A simulation model examination of optimal timing of muscle activations, Journal of Theoretical Biology, 211, pp. 39-53, (2002); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 20, pp. 293-299, (2002); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Aagaard H., Dyhre-Poulsen P., Et al., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scandinavian Journal of Medicine and Science in Sports, 9, pp. 195-200, (1999); Fregly B.J., Zajac F.E., A state-space analysis of mechanical energy generation, absorption and transfer during pedaling, Journal of Biomechanics, 29, pp. 81-90, (1996); Herring R.M., Chapman A.E., Effects of changes in segmental values and timing of both torque and torque reversal in simulated throws, Journal of Biomechanics, 25, pp. 1173-1184, (1992); Hof A.L., An explicit expression for the moment in multibody systems, Journal of Biomechanics, 25, pp. 1209-1211, (1992); Ishii H., Yanagiya T., Naito H., Katsumoto S., Maruyama T., Numerical study of ball behavior in side-foot soccer kick based on impact dynamic theory, Journal of Biomechanics, 42, pp. 2712-2720, (2009); Kreighbaum E., Barthels K.M., Biomechanics: A qualitative approach for studying human movement, pp. 335-345, (1999); Lees A., Noran L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (1998); Masuda K., Kikuhara N., Demura S., Katsuta S., Yamanaka K., Relationship between muscle strength in various isokinetic movements and kick performance among soccer players, The Journal of Sports Medicine and Physical Fitness, 45, pp. 44-52, (2005); Naito K., Fukui Y., Maruyama T., Multi-joint kinetic chain analysis to produce the kicking knee extension motion during soccer instep kick, Human Movement Science, 29, pp. 256-276, (2010); Nunome H., Ikegami Y., Kozakai R., Apriano T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 24, pp. 529-541, (2006); Opavsky P., An investigation of linear and angular kinematics of leg during two types of soccer kick, Sciences and football, pp. 456-459, (1988); Putnam C.A., Interaction between segments during a kicking motion, Biomechanics VII-B, pp. 688-694, (1983); Putnam C.A., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Medicine and Science in Sports and Exercise, 23, pp. 130-144, (1991); Putnam C.A., Sequential motions of body segments in striking and throwing skills: Descriptions and explanations, Journal of Biomechanics, 26, SUPPL. 1, pp. 125-135, (1993); Shan G., Influence of gender and experience on the maximal instep soccer kick, European Journal of Sport Science, 9, pp. 107-114, (2005); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomechanics, 4, pp. 59-72, (2005); Sorensen H., Zacho M., Simonsen E.B., Dyhre-Poulsen P., Klausen K., Dynamics of the martial arts high front kick, Journal of Sports Sciences, 14, pp. 483-495, (1996); Zajac F.E., Understanding muscle coordination of the human leg with dynamical simulations, Journal of Biomechanics, 35, pp. 1011-1018, (2002); Zajac F.E., Neptune R.R., Kautz S.A., Biomechanics and muscle coordination of human walking. Part I: Introduction to concepts, power transfer, dynamics and simulations, Gait and Posture, 16, pp. 215-232, (2002); Zatsiorsky V.M., Kinetics of human motion, pp. 374-385, (2002)","K. Naito; Hamamatsu Medical Care Institute, Hamakita-ku 438-0038, 232-3 Kibune, Japan; email: n.assk-918@w9.dion.ne.jp","","","18727646","","HMSCD","21982787","English","Hum. Mov. Sci.","Article","Final","","Scopus","2-s2.0-84856594465" "Potthast W.; Verhelst R.; Hughes M.; Stone K.; De Clercq D.","Potthast, Wolfgang (23035844800); Verhelst, Rudy (48061615300); Hughes, Michael (57212919024); Stone, Keeron (36712611300); De Clercq, Dirk (7007178208)","23035844800; 48061615300; 57212919024; 36712611300; 7007178208","Football-specific evaluation of player–surface interaction on different football turf systems","2010","Sports Technology","3","1","","5","12","7","24","10.1080/19346190.2010.504278","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85008776578&doi=10.1080%2f19346190.2010.504278&partnerID=40&md5=5bdfa3fefd323cfab3cbb56bd620c4d9","Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany; Department of Materials Science and Engineering, University of Ghent, Ghent, Belgium; Cardiff School of Sport, University of Wales Institute, Cardiff, United Kingdom; Department of Movement and Sport Sciences, University of Ghent, Ghent, Belgium","Potthast W., Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany; Verhelst R., Department of Materials Science and Engineering, University of Ghent, Ghent, Belgium; Hughes M., Cardiff School of Sport, University of Wales Institute, Cardiff, United Kingdom; Stone K., Cardiff School of Sport, University of Wales Institute, Cardiff, United Kingdom; De Clercq D., Department of Movement and Sport Sciences, University of Ghent, Ghent, Belgium","In order to accommodate the increasing relevance of artificial football turf systems, both producers as well as governing bodies make substantial efforts to bring the game on artificial turf as close as possible to the game played on natural grass. In this context, the certifications for acceptance of certain artificial turf systems are based on pure mechanical tests. Developers modify mainly fibres, infill and elastic layer in order to optimize the mechanical properties of the turf system. Some recent research shows that pure mechanical tests of artificial turf systems do not reflect the interaction between the player and the surface. In complex football-specific movements such as goal kicks or cuttings the players’ perception, movement and sports performance can change remarkably due to changes in the turf. Those changes are not necessarily reflected in mechanical tests. By basically changing one component (infill), the differences between artificial turfs can become greater than those between natural grass and an artificial system. It is likely that physiological processes are also influenced. Subject tests are recommended to improve the current certification procedures and to provide information to the producers in order to optimize existing systems. More research is required in order to produce baseline data for soccer-specific movements on natural grass. © 2010 Taylor & Francis Group, LLC. All rights reserved.","Artificial turf; Biomechanical and physiological testing; Football specific","","Andersson H., Ekblom B., Krustrup P., Elite football on artificial turf versus natural grass: Movement patterns, technical standards, and player impressions, Journal of Sports Sciences, 26, 2, pp. 113-122, (2008); Andersson H., Raastad T., Nilsson J., Paulsen G., Garthe I., Kadi F., Neuromuscular fatigue and recovery in elite female soccer: Effects of active recovery, Medicine and Science in Sports and Exercise, 40, 2, pp. 372-380, (2008); Ascensao A., Rebelo A., Oliveirs E., Franklim M., Pereira L., Magalhae J., Biochemical impact of a soccer match – analysis of oxidative stress and muscle damage markers throughout recovery, Clinical Biochemistry, 41, 10-11, pp. 841-851, (2008); Bangsbo J., Norregaard L., Thorso F., Activity profile of competition soccer, Canadian Journal of Sport Sciences, 16, 2, pp. 110-116, (1991); Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in FA Premier League soccer, Journal of Sports Science and Medicine, 6, pp. 63-70, (2007); Bradley P.S., Sheldon W., Wooster B., Olsen P., Boanas P., Krustrup P., High-intensity running in English FA Premier League soccer matches, Journal of Sports Sciences, 27, 2, pp. 159-168, (2009); Clarke T.E., Cooper L.B., Hamill C.L., The effect of varied stride rate upon shank deceleration in running, Journal of Sports Sciences, 3, pp. 41-49, (1985); Di Michele R., Di Renzo A.M., Ammazzalorso S., Merni F., Comparison of physiological responses to an incremental running test on treadmill, natural grass, and synthetic turf in young soccer players, Journal of Strength and Conditioning Research, 23, 3, pp. 939-945, (2009); Ekstrand J., Timpka T., Hagglund M., Risk of injury in elite football played on artificial turf versus natural grass: A prospective two-cohort study, British Journal of Sports Medicine, 40, pp. 975-980, (2006); Does the game change on football turf?, FIFA Turf Roots Magazine, 3, pp. 31-34, (2008); FIFA Quality Concept for Football Turf, (2010); Fleming P.R., Young C., Roberts J.R., Jones R., Dixon N., Human perceptions of artificial turf surfaces for field hockey, Sports Engineering, 8, pp. 121-136, (2005); Fletcher N., Nokes L., Hughes M.G., Meyers R., Newcombe D., Oliver J., Et al., Physiology – effects of playing surface on football activity, Fifaturf Roots Magazine, 3, pp. 41-44, (2008); Fuller C.W., Randall W.D., Corlette J., Schmalz R., Comparison of the incidence, nature and cause of injuries sustained on grass and new generation artificial turf by male and female football players. Part 1: Match injuries, British Journal of Sports Medicine, 41, pp. 20-26, (2007); Fuller C.W., Randall W.D., Corlette J., Schmalz R., Comparison of the incidence, nature and cause of injuries sustained on grass and new generation artificial turf by male and female football players. 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Stefanyshyn (Chair) Ninth Football Biomechanics Symposium. Symposium Conducted at the Meeting of the Footwear Biomechanics Group, (2009); Potthast W., Bruggemann G.-P., Motion differences in goal kicking on natural and artificial soccer turf systems, Footwear Science, 2, 1, pp. 29-35, (2010); Rampinini E., Impellizzeri F.M., Castagna C., Coutts A.J., Wisloff U., Technical performance during soccer matches of the Italian Serie A league: Effect of fatigue and competitive level, Journal of Science and Medicine in Sport, 12, 1, pp. 227-233, (2009); Reilly T., Energetics of high-intensity exercise (Soccer) with particular reference to fatigue, Journal of Sports Sciences, 15, pp. 257-263, (1997); Reilly T., Motion analysis and physiological demands, Science and Soccer, pp. 59-72, (2003); Reilly T., Borrie A., Physiology applied to field hockey, Sports Medicine, 14, 1, pp. 10-26, (1992); Reilly T., Rigby M., Effect of an active warm-down following competitive soccer, Science and Football, pp. 226-229, (2002); Shorten M., The Myth of Running Shoe Cushioning, Paper Presented at the IV International Conference on the Engineering of Sport, Kyoto, Japan, (2002); Steffen K., Ersen T.E., Bahr R., Risk of injury on artificial turf and natural grass in young female football players, British Journal of Sports Medicine, 41, (2007); Ingen V., Schenau G.J., De Koning J.J., De Groot G., Optimisation of sprinting performance in running, cycling and speed skating, Sports Medicine, 17, pp. 259-275, (1994); Verhelst R., Verleysen P., Degrieck J., De Clercq D., Recent Findings of Transmitted Forces for Early Accelerations in Football, Workshop “New Techniques and Technologies to Apply in Sport studies, (2007); Verhelst R., Study of ball-surface and player–surface interaction on artificial turf. (Doctoral dissertation, Ghent University, Belgium), Retrieved from the University Library in Gent (S.L: S.N., 2010), (2010); Young C., A comparison of test methods and player perceptions, Paper Presented at the Sportsurf 4Th Workshop, (2007)","W. Potthast; Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, 50933, Am Sportpark Müngersdorf 6, Germany; email: potthast@dshs-koeln.de","","","19346182","","","","English","Sports Technol.","Article","Final","","Scopus","2-s2.0-85008776578" "Hoshikawa Y.; Iida T.; Muramatsu M.; Nakajima Y.; Fukunaga T.; Kanehisa H.","Hoshikawa, Yoshihiro (7006180044); Iida, Tomomi (13404288100); Muramatsu, Masataka (36779531500); Nakajima, Yoshiharu (57206865303); Fukunaga, Tetsuo (7201992196); Kanehisa, Hiroaki (26643531500)","7006180044; 13404288100; 36779531500; 57206865303; 7201992196; 26643531500","Differences in thigh muscularity and dynamic torque between junior and senior soccer players","2009","Journal of Sports Sciences","27","2","","129","138","9","20","10.1080/02640410802428063","https://www.scopus.com/inward/record.uri?eid=2-s2.0-58949104913&doi=10.1080%2f02640410802428063&partnerID=40&md5=1beaf6d77e7933d50f21c59f1b7f1c80","Sports Photonics Laboratory, Hamamatsu Photonics KK, Iwata City, Japan; Department of Sport Sciences, Waseda University, Tokorozawa, Japan; Department of Life Sciences (Sports Sciences), University of Tokyo, Tokyo, Japan","Hoshikawa Y., Sports Photonics Laboratory, Hamamatsu Photonics KK, Iwata City, Japan; Iida T., Sports Photonics Laboratory, Hamamatsu Photonics KK, Iwata City, Japan; Muramatsu M., Sports Photonics Laboratory, Hamamatsu Photonics KK, Iwata City, Japan; Nakajima Y., Sports Photonics Laboratory, Hamamatsu Photonics KK, Iwata City, Japan; Fukunaga T., Department of Sport Sciences, Waseda University, Tokorozawa, Japan; Kanehisa H., Department of Life Sciences (Sports Sciences), University of Tokyo, Tokyo, Japan","The aim of the present study was to examine differences in thigh muscularity and dynamic torque between elite junior (15.7 ± 0.2 years) and senior (22.6 ± 2.4 years) soccer players. Cross-sectional areas of the total muscle compartment, quadriceps femoris, and hamstrings + adductors were determined using magnetic resonance imaging. Knee extension and flexion torque were also measured at 1.05 and 3.14 rad · s-1. Neither junior nor senior players showed significant differences in cross-sectional area or torque between the dominant and non-dominant leg. The quadriceps femoris and hamstrings + adductors were significantly greater in the senior than junior players at all thigh-slice sites. The percentage of quadriceps femoris to total muscle compartment was significantly higher in the junior than the senior players, and the corresponding value of hamstrings + adductors was significant in the reverse direction. The senior players showed greater torque than the juniors regardless of motion and velocity, even in terms of torque relative to the product of the cross-sectional area and height. The present results indicate that (1) senior players are characterized by the predominant development of hamstrings and adductors and a higher dynamic torque relative to muscle size, and (2) elite soccer players did not show asymmetry in terms of the muscularity or dynamic torque of the thigh muscles irrespective of age.","Adductors; Cross-sectional area; Hamstrings; Lateral dominance; Quadriceps femoris","Adolescent; Adult; Biomechanics; Body Weights and Measures; Humans; Male; Muscle Strength; Quadriceps Muscle; Soccer; Thigh; Young Adult","Aagaard P., Simonsen E.B., Magnusson S.P., Larsson B., Dyhre-Poulsen P., A new concept for isokinetic hamstring: Quadriceps muscle strength ratio, American Journal of Sports Medicine, 26, pp. 231-237, (1998); Agre J.C., Baxter T.L., Musculoskeletal profile of male collegiate soccer players, Archives of Physical Medicine and Rehabilitation, 68, pp. 147-150, (1987); Ahmad C.S., Clark A.M., Heilmann N., Schoeb J.S., Gardner T.R., Levine W.N., Effect of gender and maturity on quadriceps-to-hamstring strength ratio and anterior cruciate ligament laxity, American Journal of Sports Medicine, 34, pp. 370-374, (2006); 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Sale D.G., Neural adaptation to strength training, Medicine and Science in Sports and Exercise, 20, (1988); Shephard R.J., Biology and medicine of soccer: An update, Journal of Sports Sciences, 17, pp. 757-786, (1999); Simonsen E.B., Thomsen L., Klausen K., Activity of mono- and biarticular leg muscles during sprint running, European Journal of Applied Physiology, 54, pp. 524-532, (1985); Tumilty D., Physiological characteristics of elite soccer players, Sports Medicine, 16, pp. 80-96, (1993); Wahrenberg H., Lindbeck L., Ekholm J., Knee muscular moment, tendon tension force and EMG during a vigorous movement in man, Scandinavian Journal of Rehabilitation Medicine, 10, pp. 99-106, (1978); Wisloff U., Castagna C., Helgerud J., Jones R., Hoff J., Strong correlation of maximal squat strength with sprint performance and vertical height in elite soccer players, British Journal of Sports Medicine, 38, pp. 285-288, (2004); Wisloff U., Helgerud J., Hoff J., Strength and endurance of elite soccer players, Medicine and Science in Sports and Exercise, 30, pp. 462-467, (1998); Zakas A., Bilateral isokinetic peak torque of quadriceps and hamstring muscles in professional soccer players with dominance on one or both two [sic] sides, Journal of Sports Medicine and Physical Fitness, 46, pp. 28-35, (2006); Zakas A., Mandroukas K., Vamvakoudis E., Charistoulas K., Aggelopoulou N., Peak torque of quadriceps and hamstring muscles in basketball and soccer players of different divisions, Journal of Sports Medicine and Physical Fitness, 35, pp. 199-205, (1995)","","","","1466447X","","JSSCE","19031332","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-58949104913" "Nguyen M.T.; Hsu W.K.","Nguyen, Matthew T. (57205163742); Hsu, Wellington K. (7402002625)","57205163742; 7402002625","Performance-based outcomes following patellar tendon repair in professional athletes","2020","Physician and Sportsmedicine","48","1","","110","115","5","17","10.1080/00913847.2019.1642809","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85080852739&doi=10.1080%2f00913847.2019.1642809&partnerID=40&md5=3e59af5f4c103188cfb8efaa395ecf66","Department of Orthopaedics, Northwestern University Feinberg School of Medicine, Chicago, IL, United States","Nguyen M.T., Department of Orthopaedics, Northwestern University Feinberg School of Medicine, Chicago, IL, United States; Hsu W.K., Department of Orthopaedics, Northwestern University Feinberg School of Medicine, Chicago, IL, United States","Objectives: There are limited data on the impact of a patellar tendon repair to a professional athlete’s career. The purpose of this study was to determine differences return to play (RTP) rate, career length, and performance-based outcomes after a patellar tendon repair in professional athletes of four different sports. Methods: Participants met inclusion criteria if initial reports of the date and type of surgery were corroborated by at least two independent sources of information through a well-established protocol of public newspaper archives, team injury reports, and player profiles. Players with other concomitant injuries of the knee or treated nonoperatively were excluded. One hundred and three athletes across professional baseball, basketball, American football, and soccer athletes were identified and met inclusion criteria. RTP rate, career length, and sports-specific performance statistics (i.e. player efficiency rating (PER) for professional basketball players) before and after surgery were collected for each athlete. Results: Seventy-nine (76.7%) professional athletes successfully RTP. American football athletes had the lowest RTP rate and the largest drop in performance in post-operative season 1 (P < 0.001). These athletes also experienced the shortest adjusted career lengths (P = 0.003) compared to players in the other sports. Basketball athletes played significantly less games through post-operative seasons 1 to 3 (P < 0.05). Soccer athletes had less goals and assists per game and played fewer games (P < 0.05) in post-operative season 1 that recovered to baseline by seasons 2 and 3. Conclusion: A patellar tendon rupture is a potentially devastating injury for the professional athlete. American football players appeared to have the worst postoperative outcome with the lowest RTP rate and a most significant decrease in performance in the first postoperative season. This procedure also had a significant short-term impact on soccer athletes who sustained decreases in short-term game performance. These findings are likely explained by the unique physical demands imposed by each sport. © 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group.","knee injury; outcome; Patellar tendon; patellar tendon repair; professional athlete; sport","Adult; Athletic Injuries; Humans; Knee Injuries; Male; Outcome Assessment, Health Care; Patellar Ligament; Reconstructive Surgical Procedures; Return to Sport; Young Adult; adult; Article; baseball player; basketball; basketball player; biomechanics; body mass; career; female; football; human; major clinical study; male; patellar ligament; professional athlete; return to sport; season; soccer player; sport injury; tendon injury; tendon reconstruction; tendon rupture; injury; knee injury; patellar ligament; reconstructive surgery; sport injury; young adult","Brooks P., Extensor mechanism ruptures, Orthopedics, 32, (2009); Chen S., Lu C., Chou P., Et al., Patellar tendon ruptures in weight lifters after local steroid injections, Arch Orthop Trauma Surg, 129, 3, pp. 369-372, (2009); 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Boublik M., Schlegel T., Koonce R., Et al., Patellar tendon ruptures in national football league players, Am J Sports Med, 39, 11, pp. 2436-2440, (2011); Cooper M., Selesnick F., Partial rupture of the distal insertion of the patellar tendon: a report of two cases in professional athletes, Am J Sports Med, 28, 3, pp. 402-406, (2000); Nguyen M., Nguyen J., Taormina D., Et al., A comprehensive return-to-play analysis of national basketball association players with operative patellar tendon tears, Orthop J Sports Med, 6, 10, (2018); Mai H.T., Alvarez A.P., Freshman R.D., Et al., The NFL orthopaedic surgery outcomes database (NO-SOD): the effect of common orthopaedic procedures on football careers, Am J Sports Med, 44, 9, pp. 2255-2262, (2016); Hsu W.K., Outcomes following nonoperative and operative treatment for cervical disc herniations in national football league athletes, Spine (Phila Pa 1976), 36, 10, pp. 800-805, (2011); Mai H., Chun D., Schneider A., Et al., the difference in clinical outcomes after anterior cervical fusion, disk replacement, and foraminotomy in professional athletes, Clin Spine Surg, 31, 1, pp. E80-E84, (2018); 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Garhammer J., Jobe F.W., Human patellar-tendon rupture, J Bone Joint Surg Am, 59, pp. 179-183, (1977); Lailvaux S., Wilson R., Kasumovic M., Trait compensation and sex-specific aging of performance in male and female professional basketball players, Evolution, 68, 5, pp. 1523-1532, (2014); Silva D., Santos R., Vilas-Boas J., Et al., Influence of cleats-surface interaction on the performance and risk of injury in soccer: a systematic review, Appl Bionics Biomech, 2017, (2017); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J Sports Sci Med, 6, 2, pp. 154-165, (2007); Christian R., Lubbe R., Chun D., Et al., Prognosis following hip arthroscopy varies in professional athletes based on sport, Arthroscopy, 35, 3, pp. 837-842, (2019); Barth K., Lawton C., Touhey D., Et al., The negative impact of anterior cruciate ligament reconstruction in professional male footballers, Knee, 26, 1, pp. 142-148, (2019)","M.T. Nguyen; Department of Orthopaedics, Northwestern University Feinberg School of Medicine, Chicago, 259 East Erie Street, 13th Floor, 60611, United States; email: matthew.nguyen@northwestern.edu","","Taylor and Francis Ltd.","00913847","","PHSPD","31291548","English","Phys. Sportsmed.","Article","Final","","Scopus","2-s2.0-85080852739" "Schmitt K.-U.; Schlittler M.; Boesiger P.","Schmitt, Kai-Uwe (7101633802); Schlittler, Maja (58333041400); Boesiger, Peter (7004947285)","7101633802; 58333041400; 7004947285","Biomechanical loading of the hip during side jumps by soccer goalkeepers","2010","Journal of Sports Sciences","28","1","","53","59","6","18","10.1080/02640410903369927","https://www.scopus.com/inward/record.uri?eid=2-s2.0-74949087005&doi=10.1080%2f02640410903369927&partnerID=40&md5=a85088287f36fed2c999ad8491e76bde","Institute for Biomedical Engineering, Switzerland; Institute for Movement Sciences, ETH Zurich, CH-8092 Zurich, Gloriastrasse 35, Switzerland","Schmitt K.-U., Institute for Biomedical Engineering, Switzerland; Schlittler M., Institute for Movement Sciences, ETH Zurich, CH-8092 Zurich, Gloriastrasse 35, Switzerland; Boesiger P., Institute for Biomedical Engineering, Switzerland","There is a risk of hip injury in dives to the side by soccer goalkeepers. In this study, we assessed hip loading in goalkeepers when performing such dives. The experiments were conducted in a laboratory setting using an in-ground force plate as well as on a grass surface when the athletes were equipped with force sensors. The forces acting on the hip were measured and high-speed video analysis was performed, allowing the investigation of the dive characteristics and techniques. The peak force values recorded in the laboratory setting ranged from 3 to 8 kN, which corresponded to 4.2-8.6 times body weight. The vertical impact velocities reached 3.25 m · s-1. In the field experiments, a hip loading of 87-183 N · cm-2 was determined. We found that goalkeepers who perform a rolling motion reduce their hip loading. The data provided by this study add to the biomechanics database and contribute to the establishment of injury criteria. Such information is necessary to develop and implement strategies to help prevent hip injuries. © 2010 Taylor & Francis.","Biomechanics; Hip; Injury; Injury prevention; Soccer","Adult; Athletes; Biomechanics; Hip; Hip Injuries; Hip Joint; Humans; Male; Motion; Movement; Posture; Risk Factors; Soccer; Stress, Mechanical; Weight-Bearing; Young Adult; adult; article; athlete; biomechanics; body posture; clinical trial; hip; hip injury; human; male; mechanical stress; motion; movement (physiology); physiology; risk factor; sport; weight bearing","The Football Medicine Resource Kit (F-MARC), (2005); Feldman F., Robinovitch S., Reducing hip fracture risk during sideways falls: Evidence in young adults of the protective effects of impact to the hands and stepping, Journal of Biomechanics, 40, pp. 2612-2618, (2007); Goga I., Gongal P., Severe soccer injuries in amateurs, British Journal of Sports Medicine, 37, pp. 498-501, (2003); Groen B., Weerdesteyn V., Duysens J., The relation between hip impact velocity and hip impact force differs between sideways fall techniques, Journal of Electromyography and Kinesiology, 18, pp. 228-334, (2008); Hsiao T., Robinovitch S., Common protective movements govern unexpected falls from standing height, Journal of Biomechanics, 31, pp. 1-9, (1998); Junge A., Langevoort G., Pipe A., Peytavin A., Wong F., Mountjoy M., Et al., Injuries in team sport tournaments during the 2004 Olympic Games, American Journal of Sports Medicine, 34, pp. 565-576, (2006); Laing A., Tootoonchi I., Hulme P., Robinovitch S., Effect of compliant flooring on impact force during falls on the hip, Journal of Orthopaedic Research, 24, pp. 1405-1411, (2006); Lees A., Biomechanics applied to soccer skills, Science and Soccer, pp. 109-119, (2005); Nankaku M., Kanzaki H., Tsuboyama T., Nakamura T., Evaluation of hip fracture risk in relation to fall direction, Osteoporosis International, 16, pp. 1315-1320, (2005); Ostojic S., Comparing sports injuries in soccer: Influence of a positional role, Research in Sports Medicine, 11, pp. 203-208, (2003); Robinovitch S., Hayes W., McMahon T., Prediction of femoral impact forces in falls on the hip, Journal of Biomechanical Engineering, 113, pp. 366-374, (1991); Ruppert R., Traumatische anteriore Erstluxation der Hü fte beim Sportler [Traumatic anterior dislocation of the sportsman's hip], Sportverletzung Sportschaden, 18, pp. 34-36, (2004); Sabick M., Hay J., Goel V., Banks S., Active responses decrease impact forces at the hip and shoulder in falls to the side, Journal of Biomechanics, 32, pp. 993-998, (1999); Schmitt K.-U., Nusser M., Boesiger P., Hüftverletzungen bei Fußballtorhütern unterschiedlicher Leistungsstufen, Sportverletzung Sportschaden, 22, pp. 159-163, (2008); Schmitt K.-U., Nusser M., Derler S., Boesiger P., Analysing the protective potential of padded soccer goalkeeper shorts, British Journal of Sports Medicine, (2008); Smeesters C., Hayes W., McMahon T., Disturbance type and gait speed affect fall direction and impact location, Journal of Biomechanics, 34, pp. 309-317, (2001); Accident Statistics, (2006); van den Kroonenberg A., Hayes W., McMahon T., Hip impact velocities and body configurations for voluntary falls from standing height, Journal of Biomechanics, 29, pp. 807-811, (1996); Wong P., Hong Y., Soccer injury in the lower extremities, British Journal of Sports Medicine, 39, pp. 473-482, (2005)","K. Schmitt; Institute for Biomedical Engineering, ETH Zurich, CH-8092 Zurich, Gloriastrasse 35, Switzerland; email: Schmitt@ethz.ch","","","1466447X","","JSSCE","19967583","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-74949087005" "Ingemann-Hansen T.; Halkjaer-Kristensen J.","Ingemann-Hansen, T. (7004722178); Halkjaer-Kristensen, J. (57215567980)","7004722178; 57215567980","Force-velocity relationships in the human quadriceps muscles","1979","Scandinavian Journal of Rehabilitation Medicine","11","2","","85","89","4","19","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0018744941&partnerID=40&md5=a8aaf47160f299e5f03100f5dba1fc93","Denmark","Ingemann-Hansen T., Denmark; Halkjaer-Kristensen J., Denmark","Isokinetic contractions were performed with the knee extensor muscles in 15 young male soccer players. The measurements were obtained by a modified isokinetic device (Orthotron). In the range of motion the angular velocity was constant from 90° to 20° of knee flexion. The angular velocity could be varied from 30 to 360°/s. The overall variation of the pre-set speed and the peak torque, as estimated from dulpicate trials through the whole velocity range, averaged 4% and 5%, respectively. The peak torque decreased linearly with increasing angular velocity in a semilogarithmic scale. An estimate of the peak torque-velocity relationship in an experimental subject was obtained from the slope of the regression line. No correlation was demonstrated between the slope and the fibre composition in the lateral portion of the quadriceps muscle in this group of subjects especially trained in fast movements. It was concluded that the present applied isokinetic device gives the opportunities to measure force-velocity characteristics in the intact quadriceps muscle of man.","","Adult; Biomechanics; Equipment and Supplies; Human; Knee; Leg; Male; Muscle Contraction; Soccer; cytology; human cell; isometrics; muscle; normal human; quadriceps femoris muscle","","","","","00365505","","SJRMA","462148","English","SCAND. J. REHABIL. MED.","Article","Final","","Scopus","2-s2.0-0018744941" "Mercer T.H.; Gleeson N.P.; Claridge S.; Clement S.","Mercer, T.H. (7005994834); Gleeson, N.P. (7006096852); Claridge, S. (20533627900); Clement, S. (36892058200)","7005994834; 7006096852; 20533627900; 36892058200","Prolonged intermittent high intensity exercise impairs neuromuscular performance of the knee flexors","1998","European Journal of Applied Physiology and Occupational Physiology","77","6","","560","562","2","19","10.1007/s004210050377","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0031745602&doi=10.1007%2fs004210050377&partnerID=40&md5=694a8e81e592f845e4eaf5d58d98b97a","Div. of Sport, Health and Exercise, School of Health, Staffordshire University, Stoke-on-Trent, ST4 2DF, Leek Road, United Kingdom","Mercer T.H., Div. of Sport, Health and Exercise, School of Health, Staffordshire University, Stoke-on-Trent, ST4 2DF, Leek Road, United Kingdom; Gleeson N.P., Div. of Sport, Health and Exercise, School of Health, Staffordshire University, Stoke-on-Trent, ST4 2DF, Leek Road, United Kingdom; Claridge S., Div. of Sport, Health and Exercise, School of Health, Staffordshire University, Stoke-on-Trent, ST4 2DF, Leek Road, United Kingdom; Clement S., Div. of Sport, Health and Exercise, School of Health, Staffordshire University, Stoke-on-Trent, ST4 2DF, Leek Road, United Kingdom","This study investigated the effect of prolonged intermittent high intensity exercise upon the isokinetic leg strength and electromechanical delay of the knee flexors. Seven male collegiate soccer players were exposed to: (i) a prolonged intermittent high intensity exercise task (PIHIET) which required subjects to complete a single-leg pedalling task, with the preferred limb, (75 rpm for all constant-load portions of the task) consisting of 48 x 1.8 minute cycles of exercise, and (ii) a control task consisting of no exercise. Pre-, mid- and post-PIHIET gravity corrected indices of knee flexion angle-specific torque (0.44 rad knee flexion (AST); 0 rad = full knee extension; [1.05 rad.s-1]) were made for both intervention and control limbs. Electromechanical delay (EMD) of the m. biceps femoris during supine knee flexion movements was evaluated in the preferred leg on both intervention and control days. Repeated measures ANOVAs revealed significant condition (intervention; control) by time (pre; mid; post) interactions for both knee flexor AST (F([2,12])] = 4.8; p < 0.03) and EMD (F([2,12]) = 4.1; p < 0.05). AST was observed to decrease by 16% and EMD increase by 30% pre to post intervention. These observations suggest an impairment of neuromuscular control and the ability to maintain force generation in the knee flexors, near the extremes of the range of motion during prolonged intermittent high-intensity exercise activities. Changes of this magnitude may pose a threat to the integrity of the knee joint.","Electromechanical delay; Fatigue; Isokinetic; Males; Strength","Adult; Biomechanics; Exercise; Exercise Test; Humans; Knee Joint; Male; Muscle Contraction; Neuromuscular Junction; Physical Endurance; adult; article; athlete; biomechanics; controlled study; cycling; electrophysiology; exercise; extensor muscle; flexor muscle; gravity; human; human experiment; knee function; leg movement; male; muscle isometric contraction; neuromuscular system; normal human; performance; priority journal","Abernethy P., Influence of acute endurance activity on isokinetic leg strength, Journal of Strength and Conditioning Research, 7, pp. 141-146, (1993); Craig B.W., Lucas J., Pohlman R., Stelling H., The effects of running, weightlifting and a combination of both on growth hormone release, Journal of Applied Sports Science Research, 5, pp. 198-203, (1991); Devita P., Kelly W.A., Effects of landing stiffness on joint kinetics and energetics in the lower extremity, Medicine and Science in Sports and Exercise, 24, pp. 108-115, (1992); Fu F.H., Biomechanics of knee ligaments, Journal of Bone and Joint Surgery, 75 A, pp. 1716-1727, (1993); Gleeson N.P., Mercer T.H., The reproducibility of isokinetic leg strength and endurance in men and women, European Journal of Applied Physioloay and Occupational Physiology, 65, pp. 221-228, (1992); Hutchinson M.R., Ireland M.L., Knee injuries in female athletes, Sports Medicine, 19, pp. 288-302, (1995); Ryder S.H., Johnson R.J., Beynnon B.D., Ettlinger C.F., Prevention of ACL injuries, Journal of Sport Rehabilitation, 6, pp. 80-96, (1997); Zhou S., McKenna M.J., Lawson D.L., Morrison W.E., Fairweather I., Effects of fatigue and sprint training on electromechanical delay of knee extensor muscles, European Journal of Applied Physiology, 72, pp. 410-416, (1996)","","","","03015548","","EJAPC","9650744","English","Eur. J. Appl. Physiol. Occup. Physiol.","Article","Final","","Scopus","2-s2.0-0031745602" "Becker S.; Berger J.; Backfisch M.; Ludwig O.; Kelm J.; Fröhlich M.","Becker, Stephan (57209469974); Berger, Joshua (57202190484); Backfisch, Marco (57209473767); Ludwig, Oliver (23967098400); Kelm, Jens (7006747095); Fröhlich, Michael (7006415804)","57209469974; 57202190484; 57209473767; 23967098400; 7006747095; 7006415804","Effects of a 6-week strength training of the neck flexors and extensors on the head acceleration during headers in soccer","2019","Journal of Sports Science and Medicine","18","4","","729","737","8","18","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85075321794&partnerID=40&md5=8a7b4f09cfd141758d886914715163a0","Department of Sport Science, Technische Universität Kaiserslautern, Kaiserslautern, Germany; Medical Faculty, Saarland University, Homburg/Saar, Germany","Becker S., Department of Sport Science, Technische Universität Kaiserslautern, Kaiserslautern, Germany; Berger J., Department of Sport Science, Technische Universität Kaiserslautern, Kaiserslautern, Germany; Backfisch M., Department of Sport Science, Technische Universität Kaiserslautern, Kaiserslautern, Germany; Ludwig O., Department of Sport Science, Technische Universität Kaiserslautern, Kaiserslautern, Germany; Kelm J., Medical Faculty, Saarland University, Homburg/Saar, Germany; Fröhlich M., Department of Sport Science, Technische Universität Kaiserslautern, Kaiserslautern, Germany","The importance of well trained and stable neck flexors and extensors as well as trunk muscles for intentional headers in soccer is increasingly discussed. The neck flexors and extensors should ensure a coupling of trunk and head at the time of ball contact to increase the physical mass hitting the ball and reduce head acceleration. The aim of the study was to analyze the influence of a 6-week strength training program (neck flexors, neck extensors) on the acceleration of the head during standing, jumping and running headers as well as after fatigue of the trunk muscles on a pendulum header. A total of 33 active male soccer players (20.3 ± 3.6 years, 1.81 ± 0.07 m, 75.5 ± 8.3 kg) participated and formed two training intervention groups (IG1: independent adult team, IG2: independent youth team) and one control group (CG: players from different teams). The training intervention consisted of three exercises for the neck flexors and extensors. The training effects were verified by means of the isometric maximum voluntary contraction (IMVC) measured by a telemetric Noraxon DTS force sensor. The head acceleration during ball contact was determined using a telemetric Noraxon DTS 3D accelerometer. There was no significant change of the IMVC over time between the groups (F=2.265, p=.121). Head acceleration was not reduced significantly for standing (IG1 0.4 ± 2.0, IG2 0.1 ± 1.4, CG-0.4 ± 1.2; F = 0.796, p = 0.460), jumping (IG1-0.7 ± 1.4, IG2-0.2 ± 0.9, CG 0.1 ± 1.2; F = 1.272, p = 0.295) and running (IG1-1.0 ± 1.9, IG2-0.2 ± 1.4, CG-0.1 ± 1.6; F = 1.050, p = 0.362) headers as well as after fatigue of the trunk musculature for post-jumping (IG1-0.2 ± 2.1, IG2-0.6 ± 1.4; CG-0.6 ± 1.3; F = 0.184, p = 0.833) and post-running (IG1-0.3 ± 1.6, IG2-0.7 ± 1.2, CG 0.0 ± 1.4; F = 0.695, p = 0.507) headers over time between IG1, IG2 and CG. A 6-week strength training of the neck flexors and neck extensors could not show the presumed preventive benefit. Both the effects of a training intervention and the consequences of an effective intervention for the acceleration of the head while heading seem to be more complex than previously assumed and presumably only come into effect in case of strong impacts. © Journal of Sports Science and Medicine.","Concussion; Head-neck-torso-alignment; Heading; Kinetics; Neck musculature; Repetitive head impacts","Acceleration; Accelerometry; Adolescent; Biomechanical Phenomena; Brain Concussion; Head; Humans; Isometric Contraction; Male; Muscle Fatigue; Muscle Strength; Neck Muscles; Resistance Training; Soccer; Time Factors; Young Adult; acceleration; accelerometry; adolescent; biomechanics; brain concussion; head; human; injury; male; muscle fatigue; muscle isometric contraction; muscle strength; neck muscle; physiology; procedures; resistance training; soccer; time factor; young adult","Babbs C., Biomechanis of Heading a Soccer Ball: Implications for Players Safety, The Scientific World Journal, 1, pp. 281-322, (2001); Bauer J.A., Thomas T.S., Caraugh J.H., Kaminski T.W., Hass C.J., Impact forces and neck muscle activity by collegiate female soccer players, Journal of Sports Sciences, 19, pp. 171-179, (2001); Beaudouin F., Reinsberger C., Meyer T., Efficacy of a football rule to prevent concussion, British Journal of Sports Medicine, 51, pp. A65-A66, (2017); Becker S., Berger J., Backfisch M., Ludwig O., Frohlich M., Evaluation of the Bourban Trunk Muscle Strength Test Based on Electromyographic Parameters, Journal of Functional Morphology and Kinesiology, 4, pp. 1-11, (2019); Becker S., Frohlich M., Kelm J., Ludwig O., Change of Muscle Activity as Well as Kinematic and Kinetic Parameters during Headers after Core Muscle Fatigue, Sports, 5, pp. 1-7, (2017); Becker S., Frohlich M., Kelm J., Ludwig O., The Influence of Fatigued Core Muscles on Head Acceleration during Headers in Soccer, Sports, 6, pp. 1-11, (2018); Becker S., Ludwig O., Kelm J., Temporal change of activity of M. Sternocleidomastoideus and M. trapezius pars descendens when performing a header after fatigue of the trunk muscles, British Journal of Sports Medicine, 47, (2013); Borg G., Borg's Perceived Exertion and Pain Scales, (1998); Bretzin A.C., Mansell J.L., Tierney R.T., McDevitt J.K., Sex Differences in Anthropometrics and Heading Kinematics Among Division I Soccer Athletes, Sports Health, 9, pp. 168-173, (2017); Broglio S.P., Baldwin G., Castellani R.J., Chrisman S.P.D., Duma S., Hainline B., Summary of 2015 University of Michigan Sport Concussion Summit, Concussion, 2016, 1, pp. 201-2016, (2015); Busch D., Meyer G., Wiegel C., Kurrat H., Braun J., Granacher U., Bedeutung, Diagnostik und Training der lokalen Rumpfkraftausdauer im Handball, Leistungssport, 46, pp. 30-35, (2016); Caccese J.B., Buckley T.A., Tierney R.T., Arbogast K.B., Rose W.C., Glutting J.J., Kaminski T.W., Head and neck size and strength predict linear and rotational acceleration during purposeful soccer heading, Sports Biomechanics, 17, pp. 462-476, (2017); Caccese J.B., Kaminski T.W., Minimizing Head Acceleration in Soccer: A Review of the Literature, Sports Medicine, 46, pp. 1591-1604, (2016); Caccese J.B., Santos F.V., History of undiagnosed concussion is associated with concussion-like symptoms following subconcussive head impacts, Neurology, 91, pp. 26-27, (2018); Cusimano M.D., Cho N., Amin K., Shirazi M., McFaull S.R., Do M.T., Wong M.C., Russell K., Mechanisms of team-sport-related brain injuries in children 5 to 19 years old: Opportunities for prevention, Plos One, 8, (2013); Dezman Z.D.W., Ledet E.H., Kerr H.A., Neck Strength Imbalance Correlates With Increased Head Acceleration in Soccer Heading, Sports Health, 5, pp. 320-326, (2013); Gutierrez G.M., Conte C., Lightbourne K., The Relationshio between Impact Force, Neck Strength and Neurocognitive Performance in Soccer Heading in Adolescent Females, Pediatric Exercise Science, 26, pp. 33-40, (2014); Hanlon E.M., Bir C.A., Real-time head acceleration measurement in girls' youth soccer, Medicine & Science in Sports & Exercise, 44, pp. 1102-1108, (2012); Hohmann A., Lames M., Letzelter M., Einführung in Die Trainingswissenschaft, (2010); Kirkendall D.T., Soccer Anatomy. Your Illustrated Guide for Soccer Strength, Speed, and Agility. Champaign: Human Kinetics, (2011); Kruyning E., Jong M., MMA. the Essentials of Mixed Martial Arts, (2014); Lamond L.C., Caccese J.B., Buckley T.A., Glutting J., Kaminski T.W., Linear Acceleration in Direct Head Contact Across Impact Type, Player Position, and Playing Scenario in Collegiate Women's Soccer Players, Journal of Athletic Training, 53, pp. 115-121, (2018); Lipton M.L., Kim N., Zimmerman M.E., Kim M., Stewart W.F., Branch C.A., Lipton R.B., Soccer heading is associated with white matter microstructural and cognitive abnormalities, Radiology, 268, pp. 850-857, (2013); Lisman P., Signorile J.F., Del Rossi G., Investigation of the effects of cervical strenth training on neck strength, EMG, and head kinematics during a football tackle, International Journal of Sports Science and Engineering, 6, pp. 131-140, (2012); Luo Z., Goldsmith W., Reaction of human head/neck/torso system to shock, Journal of Biomechanics, 24, pp. 499-510, (1991); Mansell J., Tierney R.T., Sitler M.R., Swanik K.A., Stearne D., Resistance training and head-neck segment dynamic stabilization in male and female collegiate soccer players, Journal of Athletic Training, 40, (2005); McCrory P., Meeuwisse W., Dvorak J., Aubry M., Bailes J., Broglio S., Cantu R.C., Cassidy D., Echemendia R.J., Castellani R.J., Davis G.A., Ellenbogen R., Emery C., Engebretsen L., Feddermann-Demont N., Giza C.C., Guskiewicz K.M., Herring S., Iverson G.L., Johnston K.M., Kissick J., Kutcher J., Leddy J.J., Maddocks D., Makdissi M., Manley G.T., McCrea M., Meehan W.P., Nagahiro S., Patricios J., Putukian M., Schneider K.J., Sills A., Tator C.H., Turner M., Vos P.E., Consensus statement on concussion in sport-the 5(Th) international conference on concussion in sport held in Berlin, October 2016, British Journal of Sports Medicine, 51, pp. 838-847, (2017); Naunheim R.S., Bayly P.V., Standeven J., Neubauer J.S., Lewis L.M., Genin G.M., Linear and angular head accelerations during heading of a soccer ball, Medicine and Science in Sports and Exercise, 35, pp. 1406-1412, (2003); O'kane J.W., Is Heading in Youth Soccer Dangerous Play?, The Physician and Sportsmedicine, 44, pp. 190-194, (2016); Press J.N., Rowson S., Quantifying head impact exposure in collegiate women's soccer, Clinical Journal of Sport Medicine, 27, pp. 104-110, (2017); Queen R.M., Weinhold P.S., Kirkendall D.T., Yu B., Theoretical Study of the Effect of Ball Properties on Impact Force in Soccer Heading, Medicine and Science in Sports and Exercise, 35, pp. 2069-2076, (2003); Sarmento H., Clemente F.M., Araujo D., Davids K., McRobert A., Figueiredo A., What Performance Analysts Need to Know About Research Trends in Association Football (2012– 2016): A Systematic Review, Sports Medicine, 48, pp. 799-836, (2018); Schneider K., Zernicke R., Computer simulation of head impact: Estimation of head-injury risk during soccer heading, Journal of International Society of Biomechanics in Sports, 4, pp. 358-371, (1988); Schubert M., Beck S., Taube W., Amtage F., Faist M., Gruber M., Balance training and ballistic strength training are associated with task-specific corticospinal adaptations, European Journal of Neuroscience, 27, pp. 2007-2018, (2008); Shewchenko N., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football. Part 2: Biomechanics of ball heading and head response, British Journal of Sports Medicine, 39, pp. i26-i32, (2005); Shewchenko N., Withnall C., Koewn M., Gittens R., Dvorak J., Heading in football. Part 1: Development of biomechanical methods to investigate head response, British Journal of Sports Medicine, 39, pp. i10-i25, (2005); Stewart W.F., Kim N., Ifrah C., Sliwinski M., Zimmerman M.E., Kim M., Lipton R.B., Lipton M.L., Heading Frequency Is More Strongly Related to Cognitive Performance Than Unintentional Head Impacts in Amateur Soccer Players, Front Neurol, 9, (2018); Sunami S., Maruyama T., Motion and EMG analysis of soccer-ball heading for the lateral direction, Football Science, 5, pp. 7-17, (2008); Tarnutzer A.A., Straumann D., Brugger P., Feddermann-Demont N., Persistent effects of playing football and associated (Subconcussive) head trauma on brain structure and function: A systematic review of the literature, British Journal of Sports Medicine, 51, pp. 1592-1604, (2017); Teymouri M., Sadeghi H., Nabaei A., Kasaeian A., The Relationship Between Biomechanical-Anthropometrical Parameters and the Force Exerted on the Head When Heading Free Kicks in Soccer, Archives of Trauma Research, 1, (2012); Tierney R.T., Higgins M., Caswell S.V., Brady J., McHardy K., Driban J.B., Darvish K., Sex Differences in Head Acceleration During Heading While Wearing Soccer Headgear, Journal of Athletic Training, 43, pp. 163-166, (2008); Tschopp M., Bourban P., Hubner K., Marti B., Messgenauigkeit eines 4-teiligen, standardisierten dynamischen Rumpfkrafttests: Erfahrungen mit gesunden mannlichen Spitzensportlern, Schweizerische Zeitschrift Fur Sportmedizin Und Sporttraumatologie, 49, pp. 67-72, (2001); Willardson J.M., Core Stability Training: Applications to Sports Conditioning Programs, Journal of Strength and Conditioning Research, 21, pp. 979-985, (2007); Winchester J.B., McBride J.M., Maher M.A., Mikat R.P., Allen B.K., Kline D.E., McGuigan M.R., Eight weeks of ballistic exercise improves power independently of changes in strength and muscle fiber type expression, Journal of Strength and Conditioning Research, 22, pp. 1728-1734, (2008); World medical association declaration of Helsinki: Ethical principles for medical research involving human subjects, Journal of the American Medical Association, 310, pp. 2191-2194, (2013); Yang Y.T., Baugh C.M., US youth soccer concussion policy: Heading in the right direction, JAMA Pediatrics, 170, pp. 413-414, (2016)","S. Becker; Department of Sport Science, Technische Universität Kaiserslautern, Kaiserslautern, 67663, Germany; email: stephan.becker@sowi.uni-kl.de","","Journal of Sport Science and Medicine","13032968","","","31827358","English","J. Sports Sci. Med.","Article","Final","","Scopus","2-s2.0-85075321794" "Zago M.; Sforza C.; Dolci C.; Tarabini M.; Galli M.","Zago, Matteo (57220045130); Sforza, Chiarella (7005225305); Dolci, Claudia (6602132830); Tarabini, Marco (23092293200); Galli, Manuela (7202606196)","57220045130; 7005225305; 6602132830; 23092293200; 7202606196","Use of machine learning and wearable sensors to predict energetics and kinematics of cutting maneuvers","2019","Sensors (Switzerland)","19","14","3094","","","","21","10.3390/s19143094","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85070474516&doi=10.3390%2fs19143094&partnerID=40&md5=9974ae676b444cca587b0d7afc73aedf","Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milano, 20133, Italy; Fondazione Istituto Farmacologico Filippo Serpero, Milano, 20159, Italy; E4Sport Lab, Politecnico di Milano, Milano, Italy; Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Milano, 20133, Italy; Dipartimento di Meccanica, Politecnico di Milano, Milano, 20129, Italy","Zago M., Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milano, 20133, Italy, Fondazione Istituto Farmacologico Filippo Serpero, Milano, 20159, Italy, E4Sport Lab, Politecnico di Milano, Milano, Italy; Sforza C., Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Milano, 20133, Italy; Dolci C., Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Milano, 20133, Italy; Tarabini M., E4Sport Lab, Politecnico di Milano, Milano, Italy, Dipartimento di Meccanica, Politecnico di Milano, Milano, 20129, Italy; Galli M., Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milano, 20133, Italy, E4Sport Lab, Politecnico di Milano, Milano, Italy","Changes of directions and cutting maneuvers, including 180-degree turns, are common locomotor actions in team sports, implying high mechanical load. While the mechanics and neurophysiology of turns have been extensively studied in laboratory conditions, modern inertial measurement units allow us to monitor athletes directly on the field. In this study, we applied four supervised machine learning techniques (linear regression, support vector regression/machine, boosted decision trees and artificial neural networks) to predict turn direction, speed (before/after turn) and the related positive/negative mechanical work. Reference values were computed using an optical motion capture system. We collected data from 13 elite female soccer players performing a shuttle run test, wearing a six-axes inertial sensor at the pelvis level. A set of 18 features (predictors) were obtained from accelerometers, gyroscopes and barometer readings. Turn direction classification returned good results (accuracy >98.4%) with all methods. Support vector regression and neural networks obtained the best performance in the estimation of positive/negative mechanical work (coefficient of determination R2 = 0.42–0.43, mean absolute error = 1.14–1.41 J) and running speed before/after the turns (R2 = 0.66–0.69, mean absolute error = 0.15–018 m/s). Although models can be extended to different angles, we showed that meaningful information on turn kinematics and energetics can be obtained from inertial units with a data-driven approach. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.","Changes of direction; IMU; Mechanical work; Supervised learning","Adult; Biomechanical Phenomena; Female; Humans; Machine Learning; Running; Soccer; Wearable Electronic Devices; Young Adult; Decision trees; Kinematics; Machine learning; Neural networks; Regression analysis; Sports; Supervised learning; Boosted decision trees; Changes of direction; Coefficient of determination; Inertial measurement unit; Mechanical work; Optical motion capture; Supervised machine learning; Support vector regression (SVR); adult; biomechanics; electronic device; female; human; machine learning; physiology; running; soccer; young adult; Wearable sensors","Hader K., Mendez-Villanueva A., Ahmaidi S., Williams B.K., Buchheit M., Changes of direction during high-intensity intermittent runs: Neuromuscular and metabolic responses, BMC Sports Sci. Med. Rehabil., 11, (2014); Alentorn-Geli E., Myer G.D., Silvers H.J., Samitier G., Romero D., Lazaro-Haro C., Cugat R.R., Lazaro-Haro C., Cugat R.R., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: Mechanisms of injury and underlying risk factors, Knee Surg. Sports Traumatol. Arhrosc., 17, pp. 705-729, (2009); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Med. Sci. Sports Exerc., 35, pp. 119-127, (2003); Read P.J., Oliver J.L., de Ste Croix M.B.A., Myer G.D., Lloyd R.S., Neuromuscular Risk Factors for Knee and Ankle Ligament Injuries in Male Youth Soccer Players, Sports Med, 46, pp. 1059-1066, (2016); Vanrenterghem J., Venables E., Pataky T., Robinson M.A., The effect of running speed on knee mechanical loading in females during side cutting, J. Biomech., 45, pp. 2444-2449, (2012); McLean S.G., Huang X., van Den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clin. Biomech., 20, pp. 863-870, (2005); Ciprandi D., Lovecchio N., Piacenza M., Limonta E., Esposito F., Sforza C., Zago M., Energy Cost of Continuous Shuttle Running, J. Strength Cond. Res., 32, pp. 2265-2272, (2017); Zamparo P., Bolomini F., Nardello F., Beato M., Energetics (And kinematics) of short shuttle runs, Eur. J. Appl. Physiol., 115, pp. 1985-1994, (2015); Cortes N., Onate J., van Lunen B., Pivot task increases knee frontal plane loading compared with sidestep and drop-jump, J. Sports Sci., 29, pp. 83-92, (2011); Zago M., Codari M., Grilli M., Bellistri G., Lovecchio N., Sforza C., Determinants of the half-turn with the ball in sub-elite youth soccer players, Sports Biomech, 15, pp. 234-244, (2016); Zago M., Piovan A.G., Annoni I., Ciprandi D., Iaia F.M., Sforza C., Dribbling determinants in sub-elite youth soccer players, J. Sports Sci., 34, pp. 411-419, (2016); David S., Mundt M., Komnik I., Potthast W., Understanding cutting maneuvers—The mechanical consequence of preparatory strategies and foot strike pattern, Hum. Mov. Sci., 62, pp. 202-210, (2018); Maniar N., Schache A.G., Cole M.H., Opar D.A., Lower-limb muscle function during sidestep cutting, J. Biomech., 82, pp. 186-192, (2019); Zago M., Esposito F., Bertozzi F., Tritto B., Rampichini S., Galvani C., Galli M., Sforza C., Kinematic effects of repeated turns while running, Eur. J. Sport Sci., 5, pp. 1-10, (2019); Cortes N., Greska E., Kollock R., Ambegaonkar J., Onate J.A., Changes in lower extremity biomechanics due to a short-term fatigue protocol, J. Athl. Train., 48, pp. 306-313, (2013); Zago M., Esposito F., Rausa G., Limonta E., Corrado F., Rampichini S., Sforza C., Kinematic algorithm to determine the energy cost of running with changes of direction, J. Biomech., 76, pp. 189-196, (2018); Camomilla V., Bergamini E., Fantozzi S., Vannozzi G., Trends supporting the in-field use of wearable inertial sensors for sport performance evaluation: A systematic review, Sensors, 18, (2018); Cust E.E., Sweeting A.J., Ball K., Robertson S., Machine and deep learning for sport-specific movement recognition: A systematic review of model development and performance, J. Sports Sci., 37, pp. 568-600, (2019); Mukhopadhyay S.C., Wearable sensors for human activity monitoring: A review, IEEE Sens. J., 15, pp. 1321-1330, (2015); Aroganam G., Manivannan N., Harrison D., Review on Wearable Technology Sensors Used in Consumer Sport Applications, Sensors, 19, (2019); Ahamed N.U., Benson L.C., Clermont C.A., Pohl A.J., Ferber R., New Considerations for Collecting Biomechanical Data Using Wearable Sensors: How Does Inclination Influence the Number of Runs Needed to Determine a Stable Running Gait Pattern?, Sensors, 19, (2019); Kim W., Kim M., On-line detection and segmentation of sports motions using a wearable sensor, Sensors, 18, (2018); Zhang Y., Ma Y., Application of supervised machine learning algorithms in the classification of sagittal gait patterns of cerebral palsy children with spastic diplegia, Comput. Biol. Med., 106, pp. 33-39, (2019); Gastin P.B., McLean O.C., Breed R.V.P., Spittle M., Tackle and impact detection in elite Australian football using wearable microsensor technology, J. Sports Sci., 32, pp. 947-953, (2014); Dalen T., Jorgen I., Gertjan E., Havard H.G., Ulrik W., Player load, acceleration, and deceleration during forty-five competitive matches of elite soccer, J. Strength Cond. Res., 30, pp. 351-359, (2016); Nedergaard N.J., Kersting U., Lake M., Using accelerometry to quantify deceleration during a high-intensity soccer turning manoeuvre, J. Sports Sci., 32, pp. 1897-1905, (2014); Bangsbo J., Iaia F.M., Krustrup P., The Yo-Yo intermittent recovery test: A useful tool for evaluation of physical performance in intermittent sports, Sports Med, 38, pp. 37-51, (2008); Mapelli A., Zago M., Fusini L., Galante D., Colombo A., Sforza C., Validation of a protocol for the estimation of three-dimensional body center of mass kinematics in sport, Gait Posture, 39, pp. 460-465, (2014); Zago M., Motta A.F., Mapelli A., Annoni I., Galvani C., Sforza C., Effect of leg dominance on the center-of-mass kinematics during an inside-of-the-foot kick in amateur soccer players, J. Hum. Kinet., 42, pp. 51-61, (2014); Zago M., Mapelli A., Shirai Y.F., Ciprandi D., Lovecchio N., Galvani C., Sforza C., Dynamic balance in elite karateka, J. Electromyogr. Kinesiol., 25, pp. 894-900, (2015); Willems P.A., Cavagna G.A., Heglund N.C., Umana F., Chelmsford S., External, internal and total work in human locomotion, J. Exp. Biol., 393, pp. 379-393, (1995); Wang W.H., Hsu Y.L., Chung P.C., Pai M.C., Predictive Models for Evaluating Cognitive Ability in Dementia Diagnosis Applications Based on Inertia-and Gait-Related Parameters, IEEE Sens. J., 18, pp. 3338-3350, (2018); Safavian S.R., Landgrebe D., A Survey of Decision Tree Classifier Methodology, IEEE Trans. Syst. Man Cybern., 21, pp. 660-674, (1991); Little M.A., Varoquaux G., Saeb S., Lonini L., Jayaraman A., Mohr D.C., Kording K.P., Using and Understanding Cross-Validation Strategies, 5, (2017); Stevens T.G.A., de Ruiter C.J., van Maurik D., van Lierop C.J.W., Savelsbergh G.J.P., Beek P.J., Measured and estimated energy cost of constant and shuttle running in soccer players, Med. Sci. Sports Exerc., 47, pp. 1219-1224, (2015); Mertens J.C., Boschmann A., Schmidt M., Plessl C., Sprint diagnostic with GPS and inertial sensor fusion, Sports Eng, 21, pp. 441-451, (2018); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Med. Sci. Sports Exerc., 33, pp. 1168-1175, (2001); Beato M., Bartolini D., Ghia G., Zamparo P., Accuracy of a 10 Hz GPS Unit in Measuring Shuttle Velocity Performed at Different Speeds and Distances (5–20 M), J. Hum. Kinet., 54, pp. 15-22, (2016); Varley M.C., Fairweather I.H., Aughey R.J., Validity and reliability of GPS for measuring instantaneous velocity during acceleration, deceleration, and constant motion, J. Sports Sci., 30, pp. 121-127, (2012); Rawstorn J.C., Maddison R., Ali A., Foskett A., Gant N., Rapid directional change degrades GPS distance measurement validity during intermittent intensity running, Plos ONE, 9, (2014); Aughey R.J., Applications of GPS Technologies to Field Sports Robert, Int. J. Sports Physiol. Perform., 6, pp. 295-310, (2011); Chau T., A review of analytical techniques for gait data. Part 2: Neural network and wavelet methods, Gait Posture, 13, pp. 102-120, (2001)","M. Zago; Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milano, 20133, Italy; email: matteo2.zago@polimi.it","","MDPI AG","14248220","","","31336997","English","Sensors","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85070474516" "Campbell C.J.; Carson J.D.; Diaconescu E.D.; Celebrini R.; Rizzardo M.R.; Godbout V.; Fletcher J.A.; McCormack R.; Outerbridge R.; Taylor T.; Constantini N.; Cote M.","Campbell, Cathy J. (56149728000); Carson, James D. (7201381739); Diaconescu, Elena D. (50261179100); Celebrini, Rick (54882312000); Rizzardo, Marc R. (56149018900); Godbout, Veronique (36170393300); Fletcher, Jennifer A. (55847651300); McCormack, Robert (57201972579); Outerbridge, Ross (57225231671); Taylor, Taryn (16242422600); Constantini, Naama (6701475159); Cote, Manon (57196654070)","56149728000; 7201381739; 50261179100; 54882312000; 56149018900; 36170393300; 55847651300; 57201972579; 57225231671; 16242422600; 6701475159; 57196654070","Canadian academy of sport and exercise medicine position statement: Neuromuscular training programs can decrease anterior cruciate ligament injuries in youth soccer players","2014","Clinical Journal of Sport Medicine","24","3","","263","267","4","17","10.1097/JSM.0000000000000068","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899823574&doi=10.1097%2fJSM.0000000000000068&partnerID=40&md5=2e915ab12ca99672a344915cdf96654c","Department of Family and Community Medicine, University of Toronto, Toronto, ON, Canada; Queen's University, Kingston, ON, Canada; Department of Physical Therapy, University of British Columbia, Vancouver, BC, Canada; Department of Surgery, Orthopaedics Division, University of Montreal, Montreal, QC, Canada; Department of Orthopaedic Surgery, Dalhousie University, Rothsay, MN, Canada; Department of Orthopaedics, University of British Columbia, Vancouver, BC, Canada; Faculty of Medicine, University of British Columbia, Kamloops, BC, Canada; Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada; Hadassah-Hebrew University Medical Center, Jerusalem, Israel; University of Montreal, Institut National du Sport du Qubec, Montreal, QC, Canada","Campbell C.J., Department of Family and Community Medicine, University of Toronto, Toronto, ON, Canada; Carson J.D., Department of Family and Community Medicine, University of Toronto, Toronto, ON, Canada; Diaconescu E.D., Queen's University, Kingston, ON, Canada; Celebrini R., Department of Physical Therapy, University of British Columbia, Vancouver, BC, Canada; Rizzardo M.R., Department of Physical Therapy, University of British Columbia, Vancouver, BC, Canada; Godbout V., Department of Surgery, Orthopaedics Division, University of Montreal, Montreal, QC, Canada; Fletcher J.A., Department of Orthopaedic Surgery, Dalhousie University, Rothsay, MN, Canada; McCormack R., Department of Orthopaedics, University of British Columbia, Vancouver, BC, Canada; Outerbridge R., Faculty of Medicine, University of British Columbia, Kamloops, BC, Canada; Taylor T., Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada; Constantini N., Hadassah-Hebrew University Medical Center, Jerusalem, Israel; Cote M., University of Montreal, Institut National du Sport du Qubec, Montreal, QC, Canada","[No abstract available]","","Anterior Cruciate Ligament; Biomechanical Phenomena; Canada; Female; Humans; Male; Physical Conditioning, Human; Risk Factors; Soccer; anterior cruciate ligament injury; article; athlete; biomechanics; evidence based practice; exercise; human; juvenile; medical society; neuromuscular system; practice guideline; priority journal; resistance training; risk factor; soccer; sports medicine; training; anterior cruciate ligament; Canada; exercise; female; male; procedures","","","","Lippincott Williams and Wilkins","1050642X","","CJSME","24776712","English","Clin. J. Sport Med.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-84899823574" "Chun C.-H.; Lee B.-C.; Yang J.-H.","Chun, Churl-Hong (7101954141); Lee, Byoung-Chang (57214002555); Yang, Jae-Hyun (15039032500)","7101954141; 57214002555; 15039032500","Extension block secondary to partial anterior cruciate ligament tear on the femoral attachment of the posterolateral bundle","2002","Arthroscopy","18","3","","227","231","4","21","10.1053/jars.2002.30655","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036524367&doi=10.1053%2fjars.2002.30655&partnerID=40&md5=664c08fc912ba384a4021cdf0a359fd5","Department of Orthopedic Surgery, College of Medicine, Wonkwang University, Iksan, South Korea; Department of Orthopedics, Wonkwang University Hospital, Iksan 570-711, Chunbuk, 344-2 Shinyong-Dong, South Korea","Chun C.-H., Department of Orthopedic Surgery, College of Medicine, Wonkwang University, Iksan, South Korea, Department of Orthopedics, Wonkwang University Hospital, Iksan 570-711, Chunbuk, 344-2 Shinyong-Dong, South Korea; Lee B.-C., Department of Orthopedic Surgery, College of Medicine, Wonkwang University, Iksan, South Korea; Yang J.-H., Department of Orthopedic Surgery, College of Medicine, Wonkwang University, Iksan, South Korea","Purpose: The purpose of this investigation was to prove that a partial tear of the anterior cruciate ligament (ACL) at the femoral attachment of the posterolateral bundle can result in mechanical knee locking and trigger the injury mechanism of an isolated ACL injury. Type of Study: Case series. Methods: From February 1993 through June 1999, 19 cases of knee locking with observation of a torn ACL, confirmed under arthroscopy, were investigated. Patients' ages ranged from 22 to 54 years. The causes of injury were sporting activities in 14 patients (8 skiing, 4 soccer, and 2 badminton); slipping and falling in 2 cases; a pedestrian car accident in 2 cases; and an unknown low-velocity injury in 1 case. Results: On physical examination, each patient indicated that the chief complaint was knee pain; all had a locked knee at 5° to 20° of full extension and 4 cases showed a locked knee at full flexion. Of the 19 cases, Lachman testing was positive in 3. With respect to intra-articular injuries, 3 patients had a tear in the medial meniscus and 1 had a tear in the lateral meniscus. The average time span between arthroscopy examinations was 3 months with a range of 1 to 10 months. Arthroscopic diagnosis and treatment were performed and meniscal tear was ruled out as the cause of locking in all patients. Conclusions: The mechanisms of injury for isolated ACL were knee hyperextension and internal rotation of lower extremity brought on especially by a low-velocity injury. The partial ACL tears were found on the femoral attachment site of the posterolateral bundle. The torn segment of the ACL was interposed between the lateral femoral condyle and the lateral tibial condyle and acted as a mechanical obstruction, giving rise to the locking symptom. In all 19 cases, the torn portion of the ACL was excised under arthroscopy and the locked knees were treated properly.","ACL; Knee arthroscopy; Locking; Posterolateral bundle tear","adult; anterior cruciate ligament rupture; article; biomechanics; clinical article; female; human; joint mobility; knee arthroscopy; knee instability; knee pain; male; sport; sport injury; traffic accident","Monaco B.R., Noble H.B., Bachman D.C., Incomplete tears of the anterior cruciate ligament and knee locking, JAMA, 247, pp. 1582-1584, (1982); Liljedahl S.O., Lindvall N., Wetterfors J., Early diagnosis and management of acute ruptures of the anterior cruciate ligament, J Bone Joint Surg Am, 47, pp. 1503-1513, (1965); Reynolds F.C., Injuries of the knee, Clin Orthop, 50, pp. 137-146, (1967); Helfet A.J., The Management of Internal Derangement of the Knee. Ed 1, (1963); McDaniel J.L., Isolated partial tear of the anterior cruciate ligament, Clin Orthop, 115, pp. 209-212, (1976); McMaster J.H., Weinert C.R., Scranton P., Diagnosis and management of isolated anterior cruciate ligament tears. A preliminary report on reconstruction with the gracilis tendon, J Traumatol, 14, pp. 230-235, (1974); Wang J.B., Rubin R.M., Marshall J.L., A mechanism of isolated anterior cruciate ligament rupture, J Bone Joint Surg Am, 57, pp. 411-413, (1975); Fetto J.F., Marshall J.L., The natural history and diagnosis of anterior cruciate ligament insufficiency, Clin Orthop, 147, pp. 29-38, (1980); Girgis F.G., Marshall J.L., Monajem A.R.S., The cruciate ligaments of the knee joint: Anatomical, functional and experimental analysis, Clin Orthop, 106, pp. 216-231, (1975); Franke K., Clinical experiences in 130 cruciate ligament reconstructions, Orthop Clin North Am, 7, pp. 191-193, (1976); Marshall J.L., Wang J.B., Furman W., Girgis F.G., Warren R., The anterior drawer sign. What is it?, Am J Sports Med, 3, pp. 152-158, (1975); Fruensgaard S., Johannsen H.V., Incomplete ruptures of the anterior cruciate ligament, J Bone Joint Surg Br, 71, pp. 526-530, (1989)","C.-H. Chun; Department of Orthopedics, Wonkwang University Hospital, Iksan 570-711, Chunbuk, 344-2 Shinyong-Dong, South Korea; email: cch@wonkwang.ac.kr","","W.B. Saunders","07498063","","ARTHE","11877606","English","Arthroscopy","Article","Final","","Scopus","2-s2.0-0036524367" "Engstrom B.K.O.; Renstrom P.A.F.H.","Engstrom, B.K.O. (16405050500); Renstrom, P.A.F.H. (7006103028)","16405050500; 7006103028","How can injuries be prevented in the world cup soccer athlete?","1998","Clinics in Sports Medicine","17","4","","755","768","13","18","10.1016/S0278-5919(05)70116-2","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0031671582&doi=10.1016%2fS0278-5919%2805%2970116-2&partnerID=40&md5=ccc99c11d252a5030af1678a82e60cde","Section of Sports Medicine, Department of Orthopedics, Karolinska Hospital, S-171 76 Stockholm, Sweden","Engstrom B.K.O., Section of Sports Medicine, Department of Orthopedics, Karolinska Hospital, S-171 76 Stockholm, Sweden; Renstrom P.A.F.H., Section of Sports Medicine, Department of Orthopedics, Karolinska Hospital, S-171 76 Stockholm, Sweden","In order to prevent soccer injuries, different risk factors have to be identified as intrinsic (e.g., joint stability or muscle imbalance) and extrinsic (e.g., equipment, turf, and rules risk factors). Some preventive measures are discussed in this article, such as shin guards, prophylactic braces and taping (or both), and proprioceptive training.","","accident prevention; athlete; biomechanics; brace; environment; France; human; joint stability; muscle strength; physical capacity; physical education; proprioception; protective equipment; repetitive strain injury; review; risk factor; shoe; sport injury; training; weight bearing","Albert M., Descriptive three year data study of outdoor and indoor professional soccer injuries, Athletic Training, 18, pp. 218-220, (1983); Arnason A., Gudmundsson A., Dahl H.A., Et al., Soccer injuries in Iceland, Scand J Med Sci Sports, 6, pp. 40-45, (1996); Backous D.D., Friedl K.E., Smith N.J., Et al., Soccer injuries and their relation to physical maturity, Am J Dis Child, 142, pp. 839-842, (1988); Bartolin J.J., (1970); Baumhauer J.F., Alosa D.M., Renstrom P.A.F.H., Et al., A prospective study of ankle injury risk factors, Am J Sports Med, 23, pp. 564-570, (1995); Berbig R., Biener B., Sportunfälle bei Fussballtorhuettern, Schweiz Zeitschr Sports Med, 31, pp. 73-79, (1983); Bir C.A., Cassatta S.J., Janda D.H., An analysis and comparison of soccer shin guards, Clin J Sports Med, 5, pp. 95-99, (1995); Blaser K.U., Aeschlimann A., Accidental injuries in soccer, Schweiz Z Sportmed, 40, pp. 7-11, (1992); Boland A.J., Glick J., Editorial comment, Am J Sports Med, 9, pp. 316-317, (1981); Bowers K.D., Martin R.B., Turf-toe: A shoe-surface related football injury, Med Sci Sports, 8, pp. 81-83, (1976); Bramwell S.T., Requa R.K., Garrick J., High school football injuries: A pilot comparison of playing surface, Med Sci Sports, 4, pp. 166-169, (1972); Brynhildsen J., Ekstrand J., Jeppsson A., Et al., Previous injuries and persisting symptoms in female soccer players, Int J Sports Med, 11, pp. 489-492, (1990); Caraffa A., Cerulli G., Projetti M., Et al., Prevention of anterior cruciate ligament injuries in soccer: A prospective controlled study of proprioceptive training, Knee Surgery Sports Traumatology Arthroscopy, 4, pp. 19-21, (1996); Ekstrand J., Injury prevention, pp. 209-214, (1994); Ekstrand J., Gillquist J., The frequency of muscle tightness and injuries in soccer players, Am J Sports Med, 10, pp. 75-78, (1982); Ekstrand J., Gillquist J., The avoidability of soccer injuries, Int J Sports Med, 4, pp. 124-128, (1983); Ekstrand J., Gillquist J., Soccer injuries and their mechanisms: A prospective study, Med Sci Sports Exerc, 15, pp. 267-270, (1983); Ekstrand J., Gillquist J., Liljedahl S.O., Prevention of soccer injuries: Supervision by doctor and physiotherapist, Am J Sports Med, 11, pp. 116-120, (1983); Ekstrand J., Gillquist J., Moller M., Et al., Incidence of soccer injuries and their relation to training and team success, Am J Sports Med, 11, pp. 63-67, (1983); Ekstrand J., Nigg B.M., Surface-related injuries in soccer, Sports Med, 8, pp. 56-62, (1989); Ekstrand J., Tropp H., The incidence of ankle sprains in soccer, Foot Ankle, 11, pp. 41-44, (1990); Engebretsen L., Kase T., Soccer injuries and artificial turf, Tidsskr Nor Laegeforen, 107, pp. 2215-2217, (1987); Engstrom B., Forssblad M., Johansson C., Et al., Does a major knee injury definitely sideline an elite soccer player?, Am J Sports Med, 18, pp. 101-105, (1990); Engstrom B., Johansson C., Tornkvist H., Soccer injuries among elite female players, Am J Sports Med, 19, pp. 372-375, (1991); Eriksson L.I., Jorfeldt L., Ekstrand J., Overuse and distorsion soccer injuries related to the player's estimated maximal aerobic work capacity, Int J Sports Med, 7, pp. 214-216, (1986); Garrick J.G., La Vigne A.B., Frictional properties of a synthetic turf, J Safety Res, 4, (1972); Haycock C.E., Gillette J.V., Susceptibility of women athletes to injury. Myths vs reality, JAMA, 236, pp. 163-165, (1976); Henning C.E., Griffis N.D., Vequist S.W., Et al., Sport-specific knee injuries, pp. 164-178, (1994); Hewson G.F.J., Mendini R.A., Wang J.B., Prophylactic knee bracing in college football, Am J Sports Med, 14, pp. 262-266, (1986); Hoff G.L., Martin T.A., Outdoor and indoor soccer: Injuries among youth players, Am J Sports Med, 14, pp. 231-233, (1986); Inklaar H., Soccer injuries. II: Aetiology and prevention, Sports Med, 18, pp. 81-93, (1994); Jorgensen U., Epidemiology of injuries in typical Scandinavian team sports, Br J Sports Med, 18, pp. 59-63, (1984); Jorgensen U., Regulations and officiating in injury prevention, pp. 213-219, (1993); Keller C.S., Noyes F.R., Buncher C.R., The medical aspects of soccer injury epidemiology, Am J Sports Med, 15, pp. 230-237, (1987); Kibler W.B., Injuries in adolescent and preadolescent soccer players, Med Sci Sports Exerc, 25, pp. 1330-1332, (1993); Lambson R.B., Barnhill B.S., Higgins R.W., Football cleat design and its effect on anterior cruciate ligament injuries: A three-year prospective study, Am J Sports Med, 24, pp. 155-159, (1996); Lindenfeld T.N., Schmitt D.J., Hendy M.P., Et al., Incidence of injury in indoor soccer, Am J Sports Med, 22, pp. 364-371, (1994); Lysens R.J.J., Epidemiological study of soccer injuries in the 18 teams of the first national division of the Royal Belgium Soccer Association (RBSA) during the season 1980–1981, pp. 16-17, (1987); Luthje P., Nurmi I., Kataja M., Et al., Epidemiology and traumatology of injuries in elite soccer: A prospective study in Finland, Scand J Med Sci Sports, 6, pp. 180-185, (1996); Mangine R.E., Noyes F.R., Mullen M.P., A physiological profile of the elite soccer athlete, J Orthop Sports Phys Ther, 12, pp. 147-152, (1990); McMaster W.C., Walter M., Injuries in soccer, Am J Sports Med, 6, pp. 354-357, (1978); Moller-Nielsen J., Hammar M., Women's soccer injuries in relation to the menstrual cycle and oral contraceptive use, Med Sci Sports Exerc, 21, pp. 126-129, (1989); Nielsen A.B., Yde J., Epidemiology and traumatology of injuries in soccer, Am J Sports Med, 17, pp. 803-807, (1989); Nilsson S., Roaas A., Soccer injuries in adolescents, Am J Sports Med, 6, pp. 358-361, (1978); Poulmedis P., Muscular imbalance and strains in soccer, pp. 53-57, (1988); Putukian M., Knowles W.K., Swere S., Et al., Injuries in indoor soccer: The Lake Placid Dawn to Dark Soccer Tournament, Am J Sports Med, 24, pp. 317-322, (1996); Renstrom R., Peterson L., Edberg B., Et al., Fotbollsplan med konstgräs (Soccer field with artificial turf), NaturvaÅrdsverket Sweden, 846, pp. 1-128, (1977); Roos H., Ornell M., Gardsell P., Et al., Soccer after anterior cruciate ligament injury—An incompatible combination? A national survey of incidence and risk factors and a 7-year follow-up of 310 players, Acta Orthop Scand, 66, pp. 107-112, (1995); Schmidt-Olsen S., Bunemann L.K., Lade V., Et al., Soccer injuries of youth, Br J Sports Med, 19, pp. 161-164, (1985); Schmidt-Olsen S., Jorgensen U., Kaalund S., Et al., Injuries among young soccer players, Am J Sports Med, 19, pp. 273-275, (1991); Stacoff A., Steger J., Stussi E., Et al., Lateral stability in sideward cutting movements, Med Sci Sports Exerc, 28, pp. 350-358, (1996); Sullivan J.A., Gross R.H., Grana W.A., Et al., Evaluation of injuries in youth soccer, Am J Sports Med, 8, pp. 325-327, (1980); Taimela S., Osterman L., Kujala U., Et al., Motor ability and personality with reference to soccer injuries, J Sports Med Phys Fitness, 30, pp. 194-201, (1990); Torg J.S., Stilwell G., Rogers K., The effect of ambient temperature on the shoe-surface interface release coefficient, Am J Sports Med, 24, pp. 79-82, (1996); Tropp H., (1985); Tropp H., Askling C., Gillquist J., Prevention of ankle sprains, Am J Sports Med, 13, pp. 259-262, (1985); Tropp H., Ekstrand J., Gillquist J., Stabilometry in functional instability of the ankle and its value in predicting injury, Med Sci Sports Exerc, 16, pp. 64-66, (1984); Tropp H., Odenrick P., Gillquist J., Stabilometry recordings in functional and mechanical instability of the ankle joint, Int J Sports Med, 6, pp. 180-182, (1985); van Laack W., Experimental studies on the effectiveness of various shin guards in soccer, Z Orthop, 123, pp. 951-956, (1985); AAstrand P.-O., Rodahl K., pp. 283-286, (1970)","","","W.B. Saunders","02785919","","CSMEE","9922899","English","Clin. Sports Med.","Article","Final","","Scopus","2-s2.0-0031671582" "Paton R.W.; Grimshaw P.; McGregor J.; Noble J.","Paton, R.W. (7101885436); Grimshaw, P. (7003688383); McGregor, J. (57198189018); Noble, J. (7202238118)","7101885436; 7003688383; 57198189018; 7202238118","Biomechanical assessment of the effects of significant hamstring injury: an isokinetic study","1989","Journal of Biomedical Engineering","11","3","","229","230","1","23","10.1016/0141-5425(89)90147-7","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0024670446&doi=10.1016%2f0141-5425%2889%2990147-7&partnerID=40&md5=a569d296cbec22c217f08c669e5905e5","Department of Orthopaedic Surgery, Hope Hospital, Salford, Eccles Old Rd, United Kingdom; Department of Orthopaedic Mechanics, University of Salford, Salford, United Kingdom; United Kingdom","Paton R.W., Department of Orthopaedic Surgery, Hope Hospital, Salford, Eccles Old Rd, United Kingdom; Grimshaw P., Department of Orthopaedic Mechanics, University of Salford, Salford, United Kingdom; McGregor J., United Kingdom; Noble J., Department of Orthopaedic Surgery, Hope Hospital, Salford, Eccles Old Rd, United Kingdom","Soccer players may develop recurrent hamstring injuries. This may be due to inadequate rehabilitation or to recurrent injury. In addition, following injury, the hamstring muscular complex may be permanently damaged, resulting in decreased strength, and increased likelihood of recurrent injury. Fourteen professional soccer players were assessed by clinical examination and by isokinetic testing with a Cybex II machine. Seven had suffered moderate or major hamstring injuries in the past year. There were seven controls. None of the hamstring group were currently suffering from an acute hamstring injury. The results of the two groups were compared. There were no differences in the mean results. This pilot study suggests that no permanent functional damage occurs to the muscular complex after moderate or major hamstring injuries after correct treatment. However, further research is required to confirm this. © 1989.","Hamstring injury; isokinetic testing","Adolescent; Adult; Athletic Injuries; Biomechanics; Exercise Test; Human; Leg Injuries; Male; Muscle Contraction; Muscles; Physical Endurance; Recurrence; Soccer; Sports; Biological Materials--Muscle; Biomedical Engineering--Patient Monitoring; biomechanics; hamstring; human; injury; methodology; normal human; priority journal; Cybex II Machine; Hamstring Injury; Hamstring Muscular Complex; Isokinetic Testing; Biomechanics","Agre, Hamstring injuries: proposed aetiological factors, prevention, and treatment, Sports Med, 2, pp. 21-33, (1985); Gleim, Nicholas, Webb, Isokinetic evaluation following leg injuries, Physician and Sports Med, 6, pp. 75-82, (1978); Ekstrand, Gillquist, Soccer injuries and their mechanisms: a prospective study, Med and Sci in Sports and Exercise, 15, pp. 267-270, (1983); Nicholas, Strizak, Veras, A study of thigh muscle weakness in different pathological states of the lower extremity, Am J Sports Med, 4, pp. 241-248, (1976); Craig, American Medical Association Comments in Sports Medicine, pp. 25-27, (1973)","","","","01415425","","JBIED","2724945","English","J. Biomed. Eng.","Article","Final","","Scopus","2-s2.0-0024670446" "Hoshikawa Y.; Muramatsu M.; Iida T.; Uchiyama A.; Nakajima Y.; Kanehisa H.","Hoshikawa, Yoshihiro (7006180044); Muramatsu, Masataka (36779531500); Iida, Tomomi (13404288100); Uchiyama, Akiko (13403423000); Nakajima, Yoshiharu (57206865303); Kanehisa, Hiroaki (26643531500)","7006180044; 36779531500; 13404288100; 13403423000; 57206865303; 26643531500","Event-related differences in the cross-sectional areas and torque generation capabilities of quadriceps femoris and hamstrings in male high school athletes","2010","Journal of Physiological Anthropology","29","1","","13","21","8","22","10.2114/jpa2.29.13","https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954841047&doi=10.2114%2fjpa2.29.13&partnerID=40&md5=f6178aa7b1d4b046e28cd4f11464393d","Sports Photonics Laboratory, HAMAMATSU PHOTONICS K.K, Japan; Department of Life Sciences (Sports Sciences), University of Tokyo, Japan","Hoshikawa Y., Sports Photonics Laboratory, HAMAMATSU PHOTONICS K.K, Japan; Muramatsu M., Sports Photonics Laboratory, HAMAMATSU PHOTONICS K.K, Japan; Iida T., Sports Photonics Laboratory, HAMAMATSU PHOTONICS K.K, Japan; Uchiyama A., Sports Photonics Laboratory, HAMAMATSU PHOTONICS K.K, Japan; Nakajima Y., Sports Photonics Laboratory, HAMAMATSU PHOTONICS K.K, Japan; Kanehisa H., Department of Life Sciences (Sports Sciences), University of Tokyo, Japan","This study investigated the event-related differences in the cross-sectional areas (CSAs) and torque generation capabilities of the quadriceps femoris (QF) and hamstrings (HAM) in male high school athletes. Subjects were soccer players (n=32), volleyball players (21), rowers (29), karate athletes (18), sumo wrestlers (15), sprinters (22), throwers (16), and nonathletes (20). The CSAs of QF and HAM at the mid-thigh were determined using magnetic resonance imaging. In addition, isokinetic torques during knee extension and flexion were determined at a pre-set velocity of 1.05 rad/s. The CSAs of the two muscle groups and torques developed in the two motions were significantly related to the two-third power of lean body mass (LBM2/3) and the product of CSA and femur length (CSA*fl), calculated as an index of muscle volume, respectively. CSA relative to LBM2/3 for QF did not differ among the groups, but that for HAM was higher in sprinters, soccer players, throwers, and karate athletes than in sumo wrestlers, rowers, volleyball players, and nonathletes. Knee extension torque relative to the CSA*fl of QF was higher in karate athletes, soccer players, and rowers than in nonathletes, but the corresponding value for knee flexion did not differ among groups. Thus, the present study indicated that, at least in male high school athletes, the event-related differences in LBM and the muscularity of QF and HAM produced the corresponding differences in the CSAs of the reciprocal muscle groups and knee extension and flexion torques, respectively. However, specific profiles related to competitive and/or training styles exist in HAM CSA and knee extension torque, which cannot be explained by the magnitude of LBM and QF CSA, respectively.","Adolescent athletes; Isokinetic torque; Lean body mass; Specificity; Thigh muscularity","Adolescent; Analysis of Variance; Anatomy, Cross-Sectional; Athletes; Biomechanics; Body Weight; Humans; Magnetic Resonance Imaging; Male; Quadriceps Muscle; Torque; adolescent; analysis of variance; anatomy; article; athlete; biomechanics; body weight; histology; human; male; nuclear magnetic resonance imaging; physiology; quadriceps femoris muscle; torque; anatomy and histology; physiology; quadriceps femoris muscle","Akima H., Kubo K., Kanehisa H., Suzuki Y., Gunji A., Fukunaga T., Leg-press resistance training during 20 days of 6° head-down-tilt bed rest prevents muscle deconditioning, Eur J Appl Physiol, 82, pp. 30-38, (2000); Asmussen E., Heeboll-Nielsen K., Dimensional analysis of physical performance and growth in boys, J Appl Physiol, 7, pp. 593-603, (1954); Astrand P.-O., Rodahl K., Textbook of work physiology, pp. 321-340, (1970); Birrer R.B., Levine R., Performance parameters in children and adolescent athletes, Sports Med, 4, pp. 211-227, (1987); Broek J., Grande F., Anderson J.T., Keys A., Densitometric analysis of body composition: revision and some quantitative assumption, Ann NY Acad Sci, 110, pp. 113-140, (1963); Delecluse C., Influence of strength training on sprint running performance Current findings and implication for training, Sports Med, 24, pp. 147-156, (1997); Dempster P., Aitkens S., A new air displacement method for the determination of human body composition, Med Sci Sports Exerc, 27, pp. 1692-1697, (1995); Fukunaga T., Miyatani M., Tachi M., Kouzaki M., Kawakami Y., Kanehisa H., Muscle volume is a major determination of joint torque in human, Acta Physiol Scand, 172, pp. 269-255, (2001); Hakkinen K., Changes in physical fitness profiles in female volleyball players during the competitive season, J Sports Med Phys Fit, 33, pp. 223-232, (1993); Hoshikawa Y., Muramatsu M., Iida T., Uchiyama A., Nakajima Y., Kanehisa H., Fukunaga T., Gender differences in yearly changes in the cross-sectional areas and dynamic torques of thigh muscles in high school volleyball players, Int J Sports Health Sci, 4, pp. 29-35, (2005); Hoshikawa Y., Muramatsu M., Iida T., Uchiyama A., Nakajima Y., Kanehisa H., Fukunaga T., Influence of the psoas major and thigh muscularity on 100-m times in junior sprinters, Med Sci Sports Exerc, 38, pp. 2138-2143, (2006); Hoshikawa Y., Iida T., Muramatsu M., Nakajima Y., Fukunaga T., Kanehisa H., Differences in thigh muscularity and dynamic torque between junior and senior soccer players, J Sports Sci, 27, pp. 129-138, (2009); Ishiguro N., Kanehisa H., Miyatani M., Masuo Y., Fukunaga T., A comparison of three bioelectrical impedance analyses for predicting lean body mass in a population with large difference in muscularity, Eur J Appl Physiol, 94, pp. 25-35, (2005); Jacobs R., Bobbert M.F., van Ingen Schenau G.J., Mechanical output individual muscles during explosive leg extensions: the role of biarticular muscles, J Biomechanics, 29, pp. 513-523, (1996); Jaric S., Mirkov D., Markovic G., Normalizing physical performance tests for body size: a proposal for standardization, J St Cond Res, 19, pp. 467-474, (2005); Kanehisa H., Ikegawa S., Tsunoda N., Fukunaga T., Crosssectional areas of fat and muscle in limbs during growth and middle age, Int J Sports Med, 15, pp. 420-425, (1994); Kanehisa H., Ikegawa S., Tsunoda N., Fukunaga T., Strength and cross-sectional areas of reciprocal muscle groups in the upper arm and thigh during adolescence, Int J Sports Med, 16, pp. 54-60, (1995); Kanehisa H., Nemoto I., Okuyama H., Ikegawa S., Fukunaga T., Force generation capacity of knee extensor muscles in speed skaters, Eur J Appl Physiol, 73, pp. 544-551, (1996); Kanehisa H., Ikegawa S., Fukunaga T., Force-velocity relationships and fatiguability of strength and endurance trained-athletes, Int J Sports Med, 18, pp. 106-112, (1997); Kanehisa H., Ikegawa S., Fukunaga T., Body composition and cross-sectional areas of limb lean tissues in Olympic weight lifters, Scand J Med Sci Sports, 8, pp. 271-278, (1998); Kanehisa H., Fukunaga T., Profiles of musculoskeletal development in limbs of college Olympic weight lifters and wrestlers, Eur J Appl Physiol, 79, pp. 414-420, (1999); Kanehisa H., Nemoto I., Fukunaga T., Strength capabilities of knee extensor muscles in junior speed skaters, J Sports Med Phys Fit, 41, pp. 46-53, (2001); Kanehisa H., Funato K., Kuno S., Fukunaga T., Katsuta S., Growth trend of the quadriceps femoris muscle in junior Olympic weight lifters: an 18-month follow-up survey, Eur J Appl Physiol, 89, pp. 238-242, (2003); Koutedakis Y., Frichknecht R., Murthy M., Knee flexion to extension peak torque ratios and low-back injuries in highly active individuals, Int J Sports Med, 18, pp. 290-295, (1997); Maffulli N., King J.B., Helms P., Training in elite young athletes (the training of young athletes (TOYA) study): injuries, flexibility and isometric strength, Br J Sports Med, 28, pp. 123-136, (1994); Mahler D.A., Nelson W.N., Hagerman F.C., Mechanical and physiological evaluation of exercise performance in elite national rowers, JAMA, 252, pp. 496-499, (1984); Malina R.M., Harper A.B., Avent H.H., Campbell D.E., Physique of female track and field athletes, Med Sci Sports Exerc, 3, pp. 32-38, (1971); Maughan R.J., Watson J.S., Weir J., Relationships between muscle strength and muscle cross-sectional area in male sprinters and endurance runners, Eur J Appl Physiol, 50, pp. 309-318, (1983); Mero A., Komi P.V., Gregor R.J., Biomechanics of sprint running, A review. Sports Med, 13, pp. 376-392, (1992); Parker D.F., Round J.M., Sacco P., Jones D.A., A crosssectional survey of upper and lower limb strength in boys and girls during childhood and adolescence, Ann Hum Biol, 17, pp. 199-211, (1993); Sale D.G., Neural adaptation to strength training, Med Sci Sports Exerc, 20, SUPPL 5, (1988); Schmidtbleicher D., Haralambie G., Changes in contractile properties of muscle after strength training in man, Eur J Appl Physiol, 46, pp. 221-228, (1981); Tanner J.M., Hughes P.C.R., Whitehouse R.H., Radiographically determined widths of bone, muscle and fat in the upper arm and calf from age 3-18 years, Ann Hum Biol, 8, pp. 495-517, (1981); Thorland W.G., Johnson G.O., Fagot T.G., Tharp G.D., Hammer R.W., Body composition and somatotype characteristics of Junior Olympic athletes, Med Sci Sports Exerc, 13, pp. 332-338, (1981); Viitasalo J.T., Rusko H., Pajala O., Rahkila P., Markku A., Montonen H., Endurance requirements in volleyball, Can J Spots Sci, 12, pp. 194-201, (1987); Wilmore J.H., Advances in body composition applied to children and adolescents in sport, The physiology of human growth, pp. 141-151, (1989)","H. Kanehisa; Department of Life Sciences (Sports Sciences), University of Tokyo, Meguro-ku, Tokyo 153-8902, 3-8-1 Komaba, Japan; email: hkane@idaten.c.u-tokoyo.ac.jp","","","18806805","","","20453429","English","J. Physiol. Anthropol.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-77954841047" "Dal Pupo J.; Detanico D.; Ache-Dias J.; Santos S.G.D.","Dal Pupo, Juliano (26432509400); Detanico, Daniele (37004482500); Ache-Dias, Jonathan (35253298800); Santos, S. G. d. (41862358700)","26432509400; 37004482500; 35253298800; 41862358700","The fatigue effect of a simulated futsal match protocol on sprint performance and kinematics of the lower limbs","2017","Journal of Sports Sciences","35","1","","81","88","7","19","10.1080/02640414.2016.1156727","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961213908&doi=10.1080%2f02640414.2016.1156727&partnerID=40&md5=b313e5b1684d4922a5ea40006acd8752","Biomechanics Laboratory, Federal University of Santa Catarina, Florianópolis, Brazil","Dal Pupo J., Biomechanics Laboratory, Federal University of Santa Catarina, Florianópolis, Brazil; Detanico D., Biomechanics Laboratory, Federal University of Santa Catarina, Florianópolis, Brazil; Ache-Dias J., Biomechanics Laboratory, Federal University of Santa Catarina, Florianópolis, Brazil; Santos S.G.D., Biomechanics Laboratory, Federal University of Santa Catarina, Florianópolis, Brazil","This study aimed to investigate the fatigue effects induced by a futsal-specific protocol (FIRP) on sprint performance and the kinematics of the lower limbs. Twenty-one futsal players participated in this study and performed a protocol to simulate the futsal demands. At pre-protocol, half-time and post-protocol, the athletes performed 10-m sprints that were recorded for kinematic analysis. Continuous relative phase (CRP) was calculated to assess the inter-segmental coordination. In addition, vertical (KVERT) and leg (KLEG) stiffness were calculated. Analysis of variance (ANOVA) for repeated measures was used (P < 0.05). The main results showed that sprint time increased (P < 0.01) post-protocol when compared to pre- and half-time conditions. Lower values of the step rate (P = 0.01) and higher values of the leg angular velocity (P = 0.02) were verified at the end of the FIRP. The CRP of thigh–leg and leg–foot and the stiffness did not change over the protocol. In addition, the high correlation of CRP between the conditions revealed no changes in coordination pattern. We concluded that futsal related-fatigue induced a decrement on sprint time, changing the kinematics of the lower limbs (decreasing step rate and increasing leg angular velocity). However, neither stiffness nor intersegment coordination during sprints was affected by fatigue. © 2016 Taylor & Francis.","athletes; Biomechanics; intersegmental coordination; motor control; stiffness","Adolescent; Analysis of Variance; Athletic Performance; Biomechanical Phenomena; Fatigue; Foot; Humans; Leg; Lower Extremity; Muscle Fatigue; Muscle, Skeletal; Range of Motion, Articular; Running; Soccer; Thigh; adolescent; analysis of variance; athletic performance; biomechanics; fatigue; foot; human; joint characteristics and functions; leg; lower limb; muscle fatigue; physiology; running; skeletal muscle; soccer; thigh","Bangsbo J., Norregaard L., Thorsoe F., Activity profile of competition soccer, Canadian Journal of Sports Science, 16, pp. 110-116, (1991); Barbero-Alvarez J.C., Soto V.M., Barbero-Alvarez V., Granda-Vera J., Match analysis and heart rate of futsal players during competition, Journal of Sports Science, 26, pp. 63-73, (2008); Bobbert M.F., Van Ingen Schenau G.J., Coordination in vertical jumping, Journal of Biomechanics, 21, pp. 249-262, (1988); Bonnard M., Sirin A., Oddson L., Thorstensson A., Different strategies to compensate for the effects of fatigue revealed by neuromuscular adaptation processes in humans, Neuroscience Letters, 166, pp. 101-105, (1994); Brochado M.M.V., Kokubun E., Speed-running interval training: Effect of duration of pause on blood lactate and kinematics of running (in Portuguese), Motriz, 3, pp. 11-19, (1997); Caetano F., Bueno M., Marche A., Nakamura F., Cunha S., Moura F., Characterisation of the sprints and repeated-sprint sequences performed by professional futsal players during official matches according to playing position, Journal of Applied Biomechanics, 31, pp. 423-429, (2015); Castagna C., D'Ottavio S., Vera J.G., Alvarez J.C., Match demands of professional Futsal: A case study, Journal of Science and Medicine in Sport, 12, pp. 490-494, (2009); Clark R.A., The effect of training status on inter-limb stiffness regulation during repeated maximal sprints, Journal of Science and Medicine in Sport, 12, pp. 406-410, (2009); Dal Pupo J., Detanico D., Santos S.G., The fatigue effect of a simulated futsal match protocol on isokinetic knee torque production, Sports Biomechanics, 13, pp. 332-340, (2014); Dal Pupo J., Dias J.A., Gheller R.G., Detanico D., Santos S.G., Stiffness, intralimb coordination, and joint modulation during a continuous vertical jump test, Sports Biomechanics, 12, pp. 259-271, (2013); Delextrat A., Baliqi F., Clarke N., Repeated sprint ability and stride kinematics are altered following an official match in national-level basketball players, Journal of Sports Medicine and Physical Fitness, 53, pp. 112-118, (2013); Dogramaci S.N., Watsford M.L., A comparison of two different methods for time-motion analysis in team sports, International Journal of Performance and Analysis in Sport, 6, pp. 73-83, (2006); Dogramaci S.N., Watsford M.L., Murphy A.J., Time-motion analysis of international and national level futsal, Journal of Strength and Conditioning Research, 25, pp. 646-651, (2011); Enoka R.M., Duchateau J., Muscle fatigue: What, why and how it influences muscle function, TheJournal of Physiology, 586, pp. 11-23, (2008); Eston R., Byrne C., Twist C., Muscle function after exercise induced muscle damage: Considerations for athletic performance in children and adults, Journal of Exercise Science and Fitness, 1, pp. 85-96, (2003); Foster C., Florhaug J.A., Franklin J., Gottschall L., Hrovatin L.A., Parker S., Dodge C., A new approach to monitoring exercise training, Journal of Strength and Conditioning Research, 15, pp. 109-115, (2001); Girard O., Micallef J.-P., Millet G.P., Changes in spring-mass model characteristics during repeated running sprints, European Journal of Applied Physiology, 111, pp. 125-134, (2011); Girard O., Millet G.P., Slawinski J., Racinais S., Micallef J.-P., Changes in leg-spring behavior during a 5000 m self-paced run in differently trained athletes, Science & Sports, 25, pp. 99-102, (2010); Greig M., The influence of soccer-specific fatigue on peak isokinetic torque production of the knee flexors and extensors, TheAmerican Journal of Sports Medicine, 36, pp. 1403-1409, (2008); Hamill J., Van Emmerik R.E.A., Heiderscheit B.C., Li L., A dynamical systems approach to lower extremity running injuries, Clinical Biomechanics, 14, pp. 297-308, (1999); 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Pinniger G., Steele J., Groeller H., Does fatigue induced by repeated dynamic efforts affect hamstring muscle function?, Medicine & Science in Sports & Exercise, 32, pp. 647-653, (2000); Rahnama N., Reilly T., Lees A., Muscle fatigue induced by exercise stimulating the work rate of competitive soccer, Journal of Sports Science, 21, pp. 933-942, (2003); Rodacki A.L.F., Fowler N.E., Bennett S.J., Multi-segment coordination: Fatigue effects, Medicine and Science in Sports and Exercise, 33, pp. 1157-1167, (2001); Rodacki A.L.F., Fowler N.E., Bennett S.J., Vertical jump coordination: Fatigue effects, Medicine and Science in Sports and Exercise, 34, pp. 105-116, (2002); Small K., McNaughton L.R., Greig M., Lovell R., Soccer fatigue, sprinting and hamstring injury risk, International Journal of Sports Medicine, 30, pp. 573-578, (2009); Small K., McNaughton L., Greig M., Lovell R., The effects of multidirectional soccer-specific fatigue on markers of hamstring injury risk, Journal of Science and Medicine in Sport, 13, pp. 120-125, (2010); Spencer M., Bishop D., Dawson B., Goodman C., Physiological and metabolic responses of repeated-sprint activities, SportsMedicine, 35, pp. 1025-1044, (2005); Twist C., Eston R., The effects of exercise-induced muscle damage on maximal intensity intermittent exercise performance, European Journal of Applied Physiology, 94, pp. 652-658, (2005); Weir J.P., Quantifying test-retest reliability using the intraclass correlation coefficient and the SEM, Journal of Strength & Conditioning Research, 19, pp. 231-240, (2005)","J. Dal Pupo; Universidade Federal de Santa Catarina, Centro de Desportos, Laboratório de Biomecânica, Florianópolis, SC, Brazil; email: juliano.dp@hotmail.com","","Routledge","02640414","","JSSCE","26949984","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-84961213908" "Clagg S.E.; Warnock A.; Thomas J.S.","Clagg, Sarah E. (40261124800); Warnock, Angela (40262807900); Thomas, James S. (57212380011)","40261124800; 40262807900; 57212380011","Kinetic analyses of maximal effort soccer kicks in female collegiate athletes","2009","Sports Biomechanics","8","2","","141","153","12","18","10.1080/14763140902752106","https://www.scopus.com/inward/record.uri?eid=2-s2.0-68249106029&doi=10.1080%2f14763140902752106&partnerID=40&md5=5cdae00e7a5411d8babbad886ae032b8","Department of Physical Therapy, Ohio University, Athens, OH, United States; Department of Sports Medicine, Children's Hospital, Columbus, OH, United States","Clagg S.E., Department of Physical Therapy, Ohio University, Athens, OH, United States; Warnock A., Department of Sports Medicine, Children's Hospital, Columbus, OH, United States; Thomas J.S., Department of Physical Therapy, Ohio University, Athens, OH, United States","To determine the effect of plant leg and approach condition on the torques of the hip, knee, and ankle in soccer kicking tasks, nine female collegiate soccer players performed a series of kicking tasks from three different approach conditions. Kinematic data of the hip, knee, and ankle were recorded and joint torques of the plant leg were calculated. Peak flexor torque of the hip and ankle was greater for the dominant than the non-dominant plant leg for center and off-axis approach conditions (P < 0.05), while the opposite was true for peak extension torque for the hip and knee (P < 0.05). Similar effects of plant leg dominance emerged for peak internal and external rotation torques as well for peak abduction and adduction torques. In summary, these results indicate that participants use greater pulling torques and smaller braking torques in the dominant plant leg compared with the non-dominant plant leg. Thus, even in collegiate athletes who train to be able to kick efficiently with either leg, differences in peak joint torques emerge between the dominant and non-dominant plant legs, particularly when participants kick from an off-axis approach.","ACL; Joint torques; Kinetics; Plant leg; Soccer kicking","Adolescent; Ankle; Athletic Performance; Biomechanics; Female; Hip; Humans; Knee; Lower Extremity; Range of Motion, Articular; Soccer; Torque; Young Adult; adolescent; adult; ankle; article; athletic performance; biomechanics; female; hip; human; joint characteristics and functions; knee; leg; physiology; sport; torque","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A 13-year review, American Journal of Sports Medicine, 33, pp. 524-530, (2005); Arendt E.A., Agel J., Dick R., Anterior cruciate ligament injury patterns among collegiate men and women, Journal of Athletic Training, 34, pp. 86-92, (1999); Barfield W.R., Effects of selected kinematic and kinetic variables on instep kicking with dominant and nondominant limbs, Journal of Human Movement Studies, 29, pp. 251-272, (1995); Barfield W.R., The biomechanics of kicking in soccer, Clinics in Sports Medicine, 17, pp. 711-728, (1998); Barfield W.R., Kirkendall D., Yu B., Kinematic instep kicking differences between elite female and male soccer players, Journal of Sports Science and Medicine, 3, pp. 72-79, (2002); Boden B.P., Dean G.S., Feagin Jr. J.A., Garrett Jr. W.E., Orthopedics 23, pp. 573-578, (2000); Cerulli G., Benoit D.L., Lamontagne M., Caraffa A., Liti A., In vivo anterior cruciate ligament strain behaviour during a rapid deceleration movement: Case report, Knee Surgery, Sports Traumatology, Arthroscopy, 11, pp. 307-311, (2003); Dick R., Putukian M., Agel J., Evans T.A., Marshall S.W., Descriptive epidemiology of collegiate women's soccer injuries: National Collegiate Athletic Association Injury Surveillance System, 1988-1989 through 2002-2003, Journal of Athletic Training, 42, pp. 278-285, (2007); Dorge H.C., Anderson T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, pp. 293-299, (2002); Fauno P., Wulff Jakobsen B., Mechanism of anterior cruciate ligament injuries in soccer, International Journal of Sports Medicine, 27, pp. 75-79, (2006); Gagnon D., Gagnon M., The influence of dynamic factors on triaxial net muscular moments at the L5/S1 joint during asymmetrical lifting and lowering, Journal of Biomechanics, 25, pp. 891-901, (1992); Hewett T.E., Ford K.R., Myer G.D., Wanstrath K., Scheper M., Gender differences in hip adduction motion and torque during a single-leg agility maneuver, Journal of Orthopaedic Research, 24, pp. 416-421, (2006); Isokawa M., Lees A., A biomechanical analysis of the in-step kick motion in soccer, Science and football, pp. 449-455, (1988); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Medicine and Science in Sports and Exercise, 36, pp. 1017-1028, (2004); Lanczos C., Applied analysis, (1988); Leardini A., Cappozzo A., Catani F., Toksvig-Larsen S., Petitto A., Sforza V., Et al., Validation of a functional method for the estimation of hip joint center location, Journal of Biomechanics, 32, pp. 99-103, (1999); Lopiano D.A., Modern history of women in sports. Twenty-five years of Title IX, Clinics in Sports Medicine, 19, pp. 163-173, (2000); Masuda K., Kikuhara N., Demura S., Katsuta S., Yamanaka K., Relationship between muscle strength in various isokinetic movements and kick performance among soccer players, Journal of Sports Medicine and Physical Fitness, 45, pp. 44-52, (2005); McLean S.G., Huang X., van den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clinical Biomechanics (Bristol, Avon), 20, pp. 863-870, (2005); Mognoni P., Narici M.V., Sirtori M.D., Lorenzelli F., Isokinetic torques and kicking maximal ball velocity in young soccer players, Journal of Sports Medicine and Physical Fitness, 34, pp. 357-361, (1994); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, pp. 2028-2036, (2002); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 24, pp. 529-541, (2006); Orloff H., Sumida B., Chow J., Habibi L., Fujino A., Kramer B., Ground reaction forces and kinematics of plant leg position during instep kicking in male and female collegiate soccer players, Sports Biomechanics, 7, pp. 238-247, (2008); Rahnama N., Lees A., Bambaecichi E., Comparison of muscle strength and flexibility between the preferred and non-preferred leg in English soccer players, Ergonomics, 48, pp. 1568-1575, (2005); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomechanics, 4, pp. 59-72, (2005); Thomas J.S., Corcos D.M., Hasan Z., Effect of movement speed on limb segment motions for reaching from a standing position, Experimental Brain Research, 148, pp. 377-387, (2003); Zatsiorsky V., Seluyanov V., The mass and inertia characteristics of the main segments of the human body, Biomechanics VIII-B, pp. 1152-1159, (1983)","","","","17526116","","","19705765","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-68249106029" "Schmitz R.J.; Cone J.C.; Tritsch A.J.; Pye M.L.; Montgomery M.M.; Henson R.A.; Shultz S.J.","Schmitz, Randy J. (7102530016); Cone, John C. (23388237500); Tritsch, Amanda J. (15833551400); Pye, Michele L. (55510250200); Montgomery, Melissa M. (36608680700); Henson, Robert A. (14622483200); Shultz, Sandra J. (7006678357)","7102530016; 23388237500; 15833551400; 55510250200; 36608680700; 14622483200; 7006678357","Changes in Drop-Jump Landing Biomechanics During Prolonged Intermittent Exercise","2014","Sports Health","6","2","","128","135","7","24","10.1177/1941738113503286","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84894277315&doi=10.1177%2f1941738113503286&partnerID=40&md5=bd93098389ebb0e291dba73133c1221f","Applied Neuromechanics Research Laboratory, Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, United States; Portland Timbers Football Club, Portland, OR, United States; Department of Orthopaedics and Sports Medicine, University of South Florida, Tampa, FL, United States; Department of Kinesiology, California State University, Northridge, CA, United States; Department of Educational Research Methodology, University of North Carolina at Greensboro, Greensboro, NC, United States","Schmitz R.J., Applied Neuromechanics Research Laboratory, Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, United States; Cone J.C., Portland Timbers Football Club, Portland, OR, United States; Tritsch A.J., Department of Orthopaedics and Sports Medicine, University of South Florida, Tampa, FL, United States; Pye M.L., Applied Neuromechanics Research Laboratory, Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, United States; Montgomery M.M., Department of Kinesiology, California State University, Northridge, CA, United States; Henson R.A., Department of Educational Research Methodology, University of North Carolina at Greensboro, Greensboro, NC, United States; Shultz S.J., Applied Neuromechanics Research Laboratory, Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, United States","Background: As injury rates rise in the later stages of sporting activities, a better understanding of lower extremity biomechanics in the later phases of gamelike situations may improve training and injury prevention programs. Hypothesis: Lower extremity biomechanics of a drop-jump task (extracted from a principal components analysis) would reveal factors associated with risk of anterior cruciate ligament injury during a 90-minute individualized intermittent exercise protocol (IEP) and for 1 hour following the IEP. Study Design: Controlled laboratory study. Level of Evidence: Level 4. Methods: Fifty-nine athletes (29 women, 30 men) completed 3 sessions. The first session assessed fitness for an IEP designed to simulate the demands of a soccer match. An experimental session assessed drop-jump biomechanics, after a dynamic warm-up, every 15 minutes during the 90-minute IEP, and for 1 hour following the IEP. A control session with no exercise assessed drop-jump performance at the same intervals. Results: Two biomechanical factors early in the first half (hip flexion at initial contact and hip loading; ankle loading and knee shear force) decreased at the end of the IEP and into the 60-minute recovery period, while a third factor (knee loading) decreased only during the recovery period (P = 0.05). Conclusion: The individualized sport-specific IEP may have more subtle effects on landing biomechanics when compared with short-term, exhaustive fatigue protocols. Clinical Relevance: Potentially injurious landing biomechanics may not occur until the later stages of soccer activity. © 2013 The Author(s).","anterior cruciate ligament; drop landing; principal components; soccer","","Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Brink M.S., Nederhof E., Visscher C., Schmikli S.L., Lemmink K.A., Monitoring load, recovery, and performance in young elite soccer players, J Strength Cond Res, 24, pp. 597-603, (2010); Chappell J.D., Herman D.C., Knight B.S., Kirkendall D.T., Garrett W.E., Yu B., Effect of fatigue on knee kinetics and kinematics in stop-jump tasks, Am J Sports Med, 33, pp. 1022-1029, (2005); Cone J.R., Berry N.T., Goldfarb A.H., Et al., Effects of an individualized soccer match simulation on vertical stiffness and impedance, J Strength Cond Res, 26, pp. 2027-2036, (2012); Cortes N., Quammen D., Lucci S., Greska E., Onate J., A functional agility short-term fatigue protocol changes lower extremity mechanics, J Sports Sci, 30, pp. 797-805, (2012); Derrick T.R., The effects of knee contact angle on impact forces and accelerations, Med Sci Sports Exerc, 36, pp. 832-837, (2004); Distefano L.J., Casa D.J., Vansumeren M.M., Et al., Hypohydration and hyperthermia impair neuromuscular control after exercise, Med Sci Sports Exerc, 45, pp. 1166-1173, (2013); Dominguese D.J., Seegmiller J., Krause B.A., Alterations in peak ground-reaction force during 60-cm drop landings caused by a single session of repeated Wingate anaerobic tests, J Sport Rehabil, 21, pp. 306-312, (2012); Draper J.A., Lancaster M.G., The 505 test: a test for agility in the horizontal plane, Austr J Sci Med Sport, 17, pp. 15-18, (1985); Edwards S., Steele J.R., Cook J.L., Purdam C.R., McGhee D.E., Munro B.J., Characterizing patellar tendon loading during the landing phases of a stop-jump task, Scand J Med Sci Sports, 22, pp. 2-11, (2012); Edwards S., Steele J.R., McGhee D.E., Does a drop landing represent a whole skill landing and is this moderated by fatigue?, Scand J Med Sci Sports, 20, pp. 516-523, (2010); Gleeson N.P., Reilly T., Mercer T.H., Rakowski S., Rees D., Influence of acute endurance activity on leg neuromuscular and musculoskeletal performance, Med Sci Sports Exerc, 30, pp. 596-608, (1998); Gollhofer A., Komi P.V., Fujitsuka N., Miyashita M., Fatigue during stretch-shortening cycle exercises: II. 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Kristianslund E., Krosshaug T., Comparison of drop jumps and sport-specific sidestep cutting: implications for anterior cruciate ligament injury risk screening, Am J Sports Med, 41, pp. 684-688, (2013); Krustrup P., Mohr M., Amstrup T., Et al., The Yo-Yo Intermittent Recovery Test: physiological response, reliability, and validity, Med Sci Sports Exerc, 35, pp. 697-705, (2003); Leardini A., Cappozzo A., Catani F., Et al., Validation of a functional method for the estimation of hip joint centre location, J Biomech, 32, pp. 99-103, (1999); McLean S.G., Fellin R.E., Suedekum N., Calabrese G., Passerallo A., Joy S., Impact of fatigue on gender-based high-risk landing strategies, Med Sci Sports Exerc, 39, pp. 502-514, (2007); McLean S.G., Samorezov J.E., Fatigue-induced ACL injury risk stems from a degradation in central control, Med Sci Sports Exerc, 41, pp. 1661-1672, (2009); Moran K.A., Marshall B.M., Effect of fatigue on tibial impact accelerations and knee kinematics in drop jumps, Med Sci Sports Exerc, 38, pp. 1836-1842, (2006); Oliver J.L., Armstrong N., Williams C.A., Reliability and validity of a soccer-specific test of prolonged repeated-sprint ability, Int J Sports Physiol Perform, 2, pp. 137-149, (2007); Pappas E., Hagins M., Sheikhzadeh A., Nordin M., Rose D., Biomechanical differences between unilateral and bilateral landings from a jump: gender differences, Clin J Sport Med, 17, pp. 263-268, (2007); Perrier E.T., Pavol M.J., Hoffman M.A., The acute effects of a warm-up including static or dynamic stretching on countermovement jump height, reaction time, and flexibility, J Strength Cond Res, 25, pp. 1925-1931, (2011); Quammen D., Cortes N., van Lunen B.L., Lucci S., Ringleb S.I., Onate J., Two different fatigue protocols and lower extremity motion patterns during a stop-jump task, J Athl Train, 47, pp. 32-41, (2012); Rahnama N., Reilly T., Lees A., Injury risk associated with playing actions during competitive soccer, Br J Sports Med, 36, pp. 354-359, (2002); Rahnama N., Reilly T., Lees A., Graham-Smith P., Muscle fatigue induced by exercise simulating the work rate of competitive soccer, J Sports Sci, 21, pp. 933-942, (2003); Salaj S., Markovic G., Specificity of jumping, sprinting, and quick change-of-direction motor abilities, J Strength Cond Res, 25, pp. 1249-1255, (2011); Sanna G., O'Connor K.M., Fatigue-related changes in stance leg mechanics during sidestep cutting maneuvers, Clin Biomech (Bristol, Avon), 23, pp. 946-954, (2008); Santamaria L.J., Webster K.E., The effect of fatigue on lower-limb biomechanics during single-limb landings: a systematic review, J Orthop Sports Phys Ther, 40, pp. 464-473, (2010); Schmitz R.J., Shultz S.J., Kulas A.S., Windley T.C., Perrin D.H., Kinematic analysis of functional lower body perturbations, Clin Biomech (Bristol, Avon), 19, pp. 1032-1039, (2004); Shimokochi Y., Ambegaonkar J.P., Meyer E.G., Lee S.Y., Shultz S.J., Changing sagittal plane body position during single-leg landings influences the risk of non-contact anterior cruciate ligament injury, Knee Surg Sports Traumatol Arthrosc, 21, pp. 888-897, (2013); Shultz S.J., Nguyen A.D., Leonard M.D., Schmitz R.J., Thigh strength and activation as predictors of knee biomechanics during a drop jump task, Med Sci Sports Exerc, 41, pp. 857-866, (2009); Shultz S.J., Schmitz R.J., Cone J.R., Et al., Changes in multi-planar knee laxity during intermittent exercise influence landing biomechanics, In Review, (2013); Shultz S.J., Schmitz R.J., Cone J.R., Et al., Multiplanar knee laxity increases during a 90-min intermittent exercise protocol, Med Sci Sports Exerc, 45, pp. 1553-1561, (2013); Small K., McNaughton L.R., Greig M., Lohkamp M., Lovell R., Soccer fatigue, sprinting and hamstring injury risk, Int J Sports Med, 30, pp. 573-578, (2009); Tsai L.C., Powers C.M., Increased hip and knee flexion during landing decreases tibiofemoral compressive forces in women who have undergone anterior cruciate ligament reconstruction, Am J Sports Med, 41, pp. 423-429, (2013); Webster K.E., Santamaria L.J., McClelland J.A., Feller J.A., Effect of fatigue on landing biomechanics after anterior cruciate ligament reconstruction surgery, Med Sci Sports Exerc, 44, pp. 910-916, (2012); Weinhandl J.T., Smith J.D., Dugan E.L., The effects of repetitive drop jumps on impact phase joint kinematics and kinetics, J Appl Biomech, 27, pp. 108-115, (2011)","R. J. Schmitz; Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC 27402, 1408 Walker Ave, 250 HHP, United States; email: rjschmit@uncg.edu","","SAGE Publications Inc.","19417381","","","","English","Sports Health","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84894277315" "Del Buono A.; Florio A.; Boccanera M.S.; Maffulli N.","Del Buono, Angelo (26667616000); Florio, Antonietta (7003310717); Boccanera, Michele Simone (55971610500); Maffulli, Nicola (55663198300)","26667616000; 7003310717; 55971610500; 55663198300","Syndesmosis injuries of the ankle","2013","Current Reviews in Musculoskeletal Medicine","6","4","","313","319","6","20","10.1007/s12178-013-9183-x","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84890798874&doi=10.1007%2fs12178-013-9183-x&partnerID=40&md5=a20606bb31d8c7e396f934f5baa7af8f","Department of Orthopaedic and Trauma Surgery, Campus Biomedico University of Rome, Rome, Via Alvaro del Portillo, Italy; Department of Orthopaedic and Trauma Surgery, Hospital San Giovanni Evangelista, Tivoli, Italy; Department of Musculoskeletal Disorders, University of Salerno, Salerno, Italy; Centre for Sports and Exercise Medicine, Barts and the London School of Medicine and Dentistry, Mile End Hospital, London E1 4DG, 275 Bancroft Road, United Kingdom","Del Buono A., Department of Orthopaedic and Trauma Surgery, Campus Biomedico University of Rome, Rome, Via Alvaro del Portillo, Italy; Florio A., Department of Orthopaedic and Trauma Surgery, Campus Biomedico University of Rome, Rome, Via Alvaro del Portillo, Italy; Boccanera M.S., Department of Orthopaedic and Trauma Surgery, Hospital San Giovanni Evangelista, Tivoli, Italy; Maffulli N., Department of Musculoskeletal Disorders, University of Salerno, Salerno, Italy, Centre for Sports and Exercise Medicine, Barts and the London School of Medicine and Dentistry, Mile End Hospital, London E1 4DG, 275 Bancroft Road, United Kingdom","Ankle syndesmosis injuries are relatively frequent in sports, especially skiing, ice hockey, and soccer, accounting for 1 %-18 % of all ankle sprains. The evolution is unpredictable: When missed, repeated episodes of ankle instability may predispose to early degenerative changes, and frank osteoarthritis may ensue. Diagnosis is clinical and radiological, but arthroscopy may provide a definitive response, allowing one to address secondary injuries to bone and cartilage. Obvious diastasis needs to be reduced and fixed operatively, whereas less severe injuries are controversial. Nonoperative treatment may be beneficial, but it entails long rehabilitation. In professional athletes, more aggressive surgical treatment is warranted. © 2013 Springer Science+Business Media New York.","Comprehensive review; Diagnosis; Management; Syndesmosis injury","acute syndesmotic injury; anatomy; ankle arthroscopy; ankle fracture; ankle injury; ankle instability; ankle radiography; ankle sprain; ankle syndesmosis injury; article; athlete; biomechanics; bone injury; cartilage injury; chondroplasty; chronic syndesmosis injury; clinical examination; computer assisted tomography; conservative treatment; diagnostic error; disease classification; disease predisposition; disease severity; echography; human; joint degeneration; joint surgery; nuclear magnetic resonance imaging; osteoarthritis; practice guideline; priority journal; sensitivity and specificity; sport injury; surgical approach; surgical technique; symptom; treatment indication","Quenu E., Du diastasis de l'articulation tibio-peronie're inferieure, Rev Chir (Paris), 36, pp. 62-90, (1907); Jones M.H., Amendola A., Syndesmosis sprains of the ankle: A systematic review, Clinical Orthopaedics and Related Research, 455, pp. 173-175, (2007); Gerber J.P., Williams G.N., Scoville C.R., Arciero R.A., Taylor D.C., Persistent disability associated with ankle sprains: A prospective examination of an athletic population, Foot and Ankle International, 19, 10, pp. 653-660, (1998); Wright R.W., Barile R.J., Surprenant D.A., Matava M.J., Ankle syndesmosis sprains in National Hockey League players, American Journal of Sports Medicine, 32, 8, pp. 1941-1945, (2004); Williams G.N., Jones M.H., Amendola A., Syndesmotic ankle sprains in athletes, American Journal of Sports Medicine, 35, 7, pp. 1197-1207, (2007); Xenos J., Hopkinson W., Mulligan M., Olson E., Popovic N., The tibiofibular syndesmosis: Evaluation of the ligamentous structures, methods of fixation, and radiographic assessment, J Bone Joint Surg Am, 77, pp. 847-856, (1995); Bartonicek J., Anatomy of the tibiofibular syndesmosis and its clinical relevance, Surgical and Radiologic Anatomy, 25, 5-6, pp. 379-386, (2003); Brown K.W., Morrison W.B., Schweitzer M.E., Parellada J.A., Nothnagel H., MRI Findings Associated with Distal Tibiofibular Syndesmosis Injury, American Journal of Roentgenology, 182, 1, pp. 131-136, (2004); Elgafy H., Semaan H., Blessinger B., Wassef A., Ebraheim N., Computed tomography of normal distal tibiofibular syndesmosis, Skeletal Radiol, 39, pp. 559-564, (2010); Pena F.A., Coetzee J.C., Ankle syndesmosis injuries, Foot and Ankle Clinics, 11, 1, pp. 35-50, (2006); Rammelt S., Zwipp H., Grass R., Injuries to the distal tibiofibular syndesmosis, Foot Ankle Clin, 13, pp. 611-633, (2008); Ogilvie-Harris D.J., Reed S.C., Disruption of the ankle syndesmosis: Diagnosis and treatment by arthroscopic surgery, Arthroscopy, 10, 5, pp. 561-568, (1994); Thordarson D.B., Motamed S., Hedman T., Ebramzadeh E., Bakshian S., The effect of fibular malreduction on contact pressures in an ankle fracture malunion model, Journal of Bone and Joint Surgery - Series A, 79, 12, pp. 1809-1815, (1997); Beumer A., Valstar E., Garling E., Niesing R., Ginai A., Ranstam J., Swierstra B., Effects of ligament sectioning on the kinematics of the distal tibiofibular syndesmosis: A radiostereometric study of 10 cadaveric specimens based on presumed trauma mechanisms with suggestions for treatment, Acta Orthopaedica, 77, 3, pp. 531-540, (2006); Zalavras C., Thordarson D., Ankle syndesmosis injury, J Am Acad Orthop Surg, 15, pp. 330-339, (2007); Nussbaum E.D., Hosea T.M., Sieler S.D., Incremona B.R., Kessler D.E., Prospective evaluation of syndesmotic ankle sprains without diastasis, American Journal of Sports Medicine, 29, 1, pp. 31-35, (2001); Nery C., Raduan F., Del Buono A., Asaumi I., Cohen M., Maffulli N., Arthroscopic-assisted Broström-Gould for chronic ankle instability: A long-term follow-up, Am J Sports Med, 39, pp. 2381-2388, (2011); Del Buono A., Aweid O., Coco M., Maffulli N., Ankle instability: What do we know and what is the future?, Fuß Sprunggelenk, 11, pp. 3-8, (2013); Mak M., Gartner L., Pearce C., Management of syndesmosis injuries in the elite athlete, Foot Ankle Clin, 18, pp. 195-214, (2013); Alonso A., Khoury L., Adams R., Clinical tests for ankle syndesmosis injury: Reliability and prediction of return to function, Journal of Orthopaedic and Sports Physical Therapy, 27, 4, pp. 276-284, (1998); Van Dijk C.N., Mol B.W., Lim L.S., Marti R.K., Bossuyt P.M., Diagnosis of ligament rupture of the ankle joint. Physical examination, arthrography, stress radiography and sonography compared in 160 patients after inversion trauma, Acta Orthop Scand, 67, pp. 566-570, (1996); McCollum G., Van Den Bekerom M., Kerkhoffs G., Calder J., Van Dijk C., Syndesmosis and deltoid ligament injuries in the athlete, Knee Surg Sports Traumatol Arthrosc, 21, pp. 1328-1337, (2013); Beumer A., Swierstra B.A., Mulder P.G.H., Clinical diagnosis of syndesmotic ankle instability: Evaluation of stress tests behind the curtains, Acta Orthopaedica Scandinavica, 73, 6, pp. 667-669, (2002); Candal-Couto J.J., Burrow D., Bromage S., Briggs P.J., Instability of the tibio-fibular syndesmosis: Have we been pulling in the wrong direction?, Injury, 35, 8, pp. 814-818, (2004); Wolf B.R., Amendola A., Syndesmosis injuries in the athlete: When and how to operate, Current Opinion in Orthopaedics, 13, 2, pp. 151-154, (2002); Cesar De Cesar P., Muller E., Comparison of MRI to physical examination for syndesmotic injuries after lateral ankle sprain, Foot Ankle Int, 32, pp. 10-16, (2011); Press C., Gupta A., Hutchinson M., Management of ankle syndesmosis injuries in the athlete, Curr Sports Med Rep, 8, pp. 228-233, (2009); Gardner M.J., Demetrakopoulos D., Briggs S.M., Helfet D.L., Lorich D.G., Malreduction of the tibiofibular syndesmosis in ankle fractures, Foot and Ankle International, 27, 10, pp. 788-792, (2006); Takao M., Ochi M., Oae K., Naito K., Uchio Y., Diagnosis of a tear of the tibiofibular syndesmosis. The role of arthroscopy of the ankle, Journal of Bone and Joint Surgery - Series B, 85, 3, pp. 324-329, (2003); Mei Dan O., Kotz E., Barchilon V., Massarwe S., Nyska M., Mann G., A dynamic ultrasound examination for the diagnosis of ankle syndesmotic injury in professional athletes: A preliminary study, Am J Sports Med, 37, pp. 1009-1016, (2009); Ogilvie-Harris D.J., Gilbart M.K., Chorney K., Chronic pain following ankle sprains in athletes: The role of arthroscopic surgery, Arthroscopy, 13, 5, pp. 564-574, (1997); Rolf C., Barclay C., Riyami M., George J., The importance of early arthroscopy in athletes with painful cartilage lesions of the ankle: A prospective study of 61 consecutive cases, J Orthop Surg Res, (2006); Edwards G., Delee J., Ankle diastasis without fracture, Foot Ankle, 4, pp. 305-312, (1984); Amendola A., Williams G., Foster D., Evidence-based approach to treatment of acute traumatic syndesmosis (high ankle) sprains, Sports Medicine and Arthroscopy Review, 14, 4, pp. 232-236, (2006); Clanton T., Paul P., Syndesmosis injuries in athletes, Foot Ankle Clin, 7, pp. 529-549, (2002); Thornes B., Shannon F., Guiney A.-M., Hession P., Masterson E., Suture-button syndesmosis fixation: Accelerated rehabilitation and improved outcomes, Clinical Orthopaedics and Related Research, 431, pp. 207-212, (2005); Forsythe K., Freedman K., Stover M., Patwardhan A., Comparison of a novel FiberWire-button construct versus metallic screw fixation in a syndesmotic injury model, Foot Ankle Int, 29, pp. 49-54, (2008); Weening B., Bhandari M., Predictors of functional outcome following transsyndesmotic screw fixation of ankle fractures, Journal of Orthopaedic Trauma, 19, 2, pp. 102-108, (2005); Chissell H., Jones J., The influence of a diastasis screw on the outcome of Weber type-C ankle fractures, J Bone Joint Surg Br, 77, pp. 435-438, (1995); Grass R., Rammelt S., Biewener A., Zwipp H., Peroneus longus ligamentoplasty for chronic instability of the distal tibiofibular syndesmosis, Foot and Ankle International, 24, 5, pp. 392-397, (2003); Tornetta III P., Spoo J.E., Reynolds F.A., Lee C., Overtightening of the ankle syndesmosis: Is it really possible?, Journal of Bone and Joint Surgery - Series A, 83, 4, pp. 489-492, (2001); Parlamas G., Hannon C., Murawski C., Smyth N., Ma Y., Kerkhoffs G., Et al., Treatment of chronic syndesmotic injury: A systematic review and meta-analysis, Knee Surg Sports Traumatol Arthrosc; Ruedi T.P., Murphy W.M., AO principles of fracture management, CIC Editor, pp. 559-580, (2002); Schepers T., To retain or remove the syndesmotic screw: A review of literature, Arch Orthop Trauma Surg, 131, pp. 879-883, (2011); Schepers T., Van Lieshout E.M., Van Der Linden H.J., De Jong V.M., Goslings J.C., Aftercare following syndesmotic screw placement: A systematic review, J Foot Ankle Surg, 52, pp. 491-494, (2013); Qamar F., Kadakia A., Venkateswaran B., An anatomical way of treating ankle syndesmotic injuries, J Foot Ankle Surg, 50, pp. 762-765, (2011)","A. Del Buono; Department of Orthopaedic and Trauma Surgery, Campus Biomedico University of Rome, Rome, Via Alvaro del Portillo, Italy; email: angelo_delbuono@libero.it","","","19359748","","","","English","Curr. Rev. Musculoskelet. Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84890798874" "Pollard C.D.; Sigward S.M.; Powers C.M.","Pollard, Christine D. (7006671942); Sigward, Susan M. (9735729200); Powers, Christopher M. (7103284208)","7006671942; 9735729200; 7103284208","ACL Injury Prevention Training Results in Modification of Hip and Knee Mechanics During a Drop-Landing Task","2017","Orthopaedic Journal of Sports Medicine","5","9","","","","","21","10.1177/2325967117726267","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85031417199&doi=10.1177%2f2325967117726267&partnerID=40&md5=53d10836f46766bbbe2da956c21086aa","College of Public Health and Human Sciences, Program in Kinesiology, Oregon State University–Cascades, Bend, OR, United States; Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States","Pollard C.D., College of Public Health and Human Sciences, Program in Kinesiology, Oregon State University–Cascades, Bend, OR, United States; Sigward S.M., Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States; Powers C.M., Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, United States","Background: Injury prevention training has been shown to be effective in reducing the incidence of noncontact anterior cruciate ligament (ACL) injury; however, the underlying reason for the success of these training programs is unclear. Purpose: To investigate whether an ACL injury prevention program that has been shown to reduce the incidence of ACL injury alters sagittal plane hip and knee biomechanics during a drop-landing task. Study Design: Descriptive laboratory study. Methods: Thirty female club soccer players (age range, 11-17 years) with no history of knee injury participated in this study. Kinematics and ground-reaction forces were collected while each participant performed a drop-landing task prior to and immediately after participation in a 12-week ACL injury prevention training program. Results: After ACL injury prevention training, participants demonstrated decreased knee extensor moments (P =.03), increased energy absorption at the hip (P =.04), decreased knee-to-hip extensor moment ratios (P =.05), and decreased knee-to-hip energy absorption ratios (P =.03). Conclusion: Participation in an ACL injury prevention training program decreased reliance on the knee extensor muscles and improved use of the hip extensor muscles, which may explain the protective effect of this type of training program on ACL injury. Clinical Relevance: Based on these findings, clinicians can better understand how ACL injury prevention training, such as the Prevent Injury and Enhance Performance (PEP) Program, may change movement behavior at both the hip and knee. Furthermore, the study findings may support the implementation of the PEP Program, or a similar program, for clinicians aiming to improve use of the hip in an effort to reduce knee loading and consequent injuries. © 2017, © The Author(s) 2017.","anterior cruciate ligament; kinematics; kinetics; knee joint; PEP Program","adolescent; anterior cruciate ligament injury; anthropometry; Article; athletic performance; biomechanics; child; descriptive research; drop landing task; energy absorption; female; ground reaction force; hip muscle; human; incidence; joint function; kinematics; knee; musculoskeletal function; priority journal; soccer player; task performance; training","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in National Collegiate Athletic Association basketball and soccer: a 13-year review, Am J Sports Med, 33, pp. 524-531, (2005); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Bresler B., Frankel J.P., The forces and moments in the leg during level walking, Trans Am Soc Mech Eng, 72, pp. 27-36, (1950); Butler R.J., Willson J.D., Fowler D., Queen R., Gender differences in landing mechanics vary depending on the type of landing, Clin J Sport Med, 23, pp. 52-57, (2013); Cochrane J.L., Lloyd D.G., Besier T.F., Elliott B.C., Doyle T.L., Ackland T.R., Training affects knee kinematics and kinetics in cutting maneuvers in sport, Med Sci Sports Exerc, 42, pp. 1535-1544, (2010); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (1990); DeMorat G., Weinhold P., Blackburn T., Chudik S., Garrett W., Aggressive quadriceps loading can induce noncontact anterior cruciate ligament injury, Am J Sports Med, 32, pp. 477-483, (2004); Favre J., Clancy C., Dowling A.V., Andriacchi T.P., Modification of knee flexion angle has patient-specific effect on anterior cruciate ligament injury risk factors during jump landing, Am J Sports Med, 44, pp. 1540-1546, (2016); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, pp. 1745-1750, (2003); Gilchrist J., Mandelbaum B.R., Melancon H., Et al., A randomized controlled trial to prevent noncontact anterior cruciate ligament injury in female collegiate soccer players, Am J Sports Med, 36, pp. 1476-1483, (2008); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: application to the knee, J Biomech Eng, 105, pp. 136-144, (1983); Haddas R., James C.R., Hooper T.L., Lower extremity fatigue, sex, and landing performance in a population with recurrent low back pain, J Athl Train, 50, pp. 378-384, (2015); Landry S.C., McKean K.A., Hubley-Kozey C.L., Stanish W.D., Deluzio K.J., Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated side-cut maneuver, Am J Sports Med, 35, pp. 1089-1095, (2014); Lephart S.M., Ferris C.M., Riemann B.L., Myers J.B., Fu F.H., Gender differences in strength and lower extremity kinematics during landing, Clin Orthop Relat Res, 401, pp. 162-169, (2002); Liederbach M., Kremenic I.J., Orishimo K.F., Pappas E., Hagins M., Comparison of landing biomechanics between male and female dancers and athletes, part 2: influence of fatigue and implications for anterior cruciate ligament injury, Am J Sports Med, 42, pp. 1888-1900, (2007); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech (Bristol, Avon), 16, pp. 438-445, (2001); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Et al., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes, Am J Sports Med, 33, pp. 1003-1010, (2005); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, pp. 930-935, (1995); McLean S.G., Huang X., van den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: implications for ACL injury, Clin Biomech (Bristol, Avon), 20, pp. 863-870, (2005); McLean S.G., Lipfert S.W., van den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, pp. 1008-1016, (2004); Messina D.F., Farney W.C., DeLee J.C., The incidence of injury in Texas high school basketball. A prospective study among male and female athletes, Am J Sports Med, 27, pp. 294-299, (1999); Miranda D.L., Fadale P.D., Hulstyn M.J., Shalvoy R.M., Machan J.T., Fleming B.C., Knee biomechanics during a jump-cut maneuver: effects of sex and ACL surgery, Med Sci Sports Exerc, 45, pp. 942-951, (2013); Myer G.D., Ford K.R., McLean S.G., Hewett T.E., The effects of plyometric versus dynamic stabilization and balance training on lower extremity biomechanics, Am J Sports Med, 34, pp. 445-455, (2006); Myklebust G., Maehlum S., Holm E., Bahr R., A prospective cohort study of anterior cruciate ligament injuries in elite Norwegian team handball, Scand J Med Sci Sports, 8, pp. 149-153, (1998); Nagano Y., Ida H., Akai M., Fukubyashi T., Effects of jump and balance training on knee kinematics and electromyography of female basketball athletes during a single limb drop landing: pre-post intervention study, Sports Med Arthrosc Rehabil Ther Technol, 3, 1, (2011); Pappas E., Hagins M., Sheikhzadeh A., Nordin M., Rose D., Biomechanical differences between unilateral and bilateral landings from a jump: gender differences, Clin J Sport Med, 17, pp. 263-268, (2007); Pollard C.D., Sigward S.M., Powers C.M., Gender differences in hip joint kinematics and kinetics during side-step cutting maneuver, Clin J Sport Med, 17, pp. 38-42, (2007); Pollard C.D., Sigward S.M., Powers C.M., Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments, Clin Biomech (Bristol, Avon), 25, pp. 142-146, (2010); Powers C.M., The influence of abnormal hip mechanics on knee injury: a biomechanical perspective, J Orthop Sports Phys Ther, 40, pp. 42-51, (2010); Schmitz R.J., Kulas A.S., Perrin D.H., Riemann B.L., Shultz S.J., Sex differences in lower extremity biomechanics during single leg landings, Clin Biomech (Bristol, Avon), 22, pp. 681-688, (2007); Shultz S.J., Nguyen A.D., Leonard M.D., Schmitz R.J., Thigh strength and activation as predictors of knee biomechanics during a drop jump task, Med Sci Sports Exerc, 41, pp. 857-866, (2009); Sigward S.M., Pollard C.D., Powers C.M., The influence of sex and maturation on landing biomechanics: implications for anterior cruciate ligament injury, Scand J Med Sci Sports, 22, pp. 502-509, (2012); Sigward S.M., Powers C.M., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clin Biomech (Bristol, Avon), 21, pp. 41-48, (2006); Stearns K.M., Keim R.G., Powers C.M., Influence of relative hip and knee extensor muscle strength on landing biomechanics, Med Sci Sports Exerc, 45, pp. 935-941, (2013); Willson J.D., Ireland M.L., Davis I., Core strength and lower extremity alignment during single leg squats, Med Sci Sports Exerc, 38, pp. 945-952, (2006); Yu B., Lin C.F., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clin Biomech (Bristol, Avon), 21, pp. 297-305, (2006)","C.D. Pollard; College of Public Health and Human Sciences, Program in Kinesiology, Oregon State University–Cascades, Bend, 1500 SW Chandler Avenue, 97701, United States; email: christine.pollard@osucascades.edu","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85031417199" "Smith R.; Ford K.R.; Myer G.D.; Holleran A.; Treadway E.; Hewett T.E.","Smith, Rose (7410292577); Ford, Kevin R. (7102539333); Myer, Gregory D. (6701852696); Holleran, Adam (23569425500); Treadway, Erin (23570211300); Hewett, Timothy E. (7005201943)","7410292577; 7102539333; 6701852696; 23569425500; 23570211300; 7005201943","Biomechanical and performance differences between female soccer athletes in National Collegiate Athletic Association Divisions I and III","2007","Journal of Athletic Training","42","4","","470","476","6","23","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-39549104567&partnerID=40&md5=cc67296bac5781b218d7fee181a301c9","University of Cincinnati, Cincinnati, OH, United States; Cincinnati Children's Hospital Medical Center and Research Foundation, Cincinnati, OH, United States; Cincinnati Children's Hospital Medical Center and Research Foundation, MLC 10001, Cincinnati, OH 45229, 3333 Burnet Avenue, United States","Smith R., University of Cincinnati, Cincinnati, OH, United States; Ford K.R., Cincinnati Children's Hospital Medical Center and Research Foundation, Cincinnati, OH, United States; Myer G.D., Cincinnati Children's Hospital Medical Center and Research Foundation, Cincinnati, OH, United States; Holleran A., University of Cincinnati, Cincinnati, OH, United States; Treadway E., University of Cincinnati, Cincinnati, OH, United States; Hewett T.E., University of Cincinnati, Cincinnati, OH, United States, Cincinnati Children's Hospital Medical Center and Research Foundation, Cincinnati, OH, United States, Cincinnati Children's Hospital Medical Center and Research Foundation, MLC 10001, Cincinnati, OH 45229, 3333 Burnet Avenue, United States","Context: The recent increase in women's varsity soccer participation has been accompanied by a lower extremity injury rate that is 2 to 6 times that of their male counterparts. Objective: To define the differences between lower extremity biomechanics (knee abduction and knee flexion measures) and performance (maximal vertical jump height) between National Collegiate Athletic Association Division I and III female soccer athletes during a drop vertical jump. Design: Mixed 2 x 2 design. Setting: Research laboratory. Patients or Other Participants: Thirty-four female collegiate soccer players (Division I: n = 19; Division III: n = 15) participated in the study. The groups were similar in height and mass. Intervention(s): Each subject performed a maximal vertical jump, followed by 3 drop vertical jumps. Main Outcome Measure(s): Kinematics (knee abduction and flexion angles) and kinetics (knee abduction and flexion moments) were measured with a motion analysis system and 2 force platforms during the drop vertical jumps. Results: Knee abduction angular range of motion and knee abduction external moments were not different between groups (P > .05). However, Division I athletes demonstrated decreased knee flexion range of motion (P = .038) and greater peak external knee flexion moment (P = .009) compared with Division III athletes. Division I athletes demonstrated increased vertical jump height compared with Division III (P = .008). Conclusions: Division I athletes demonstrated different sagittal-plane mechanics than Division III athletes, which may facilitate improved performance. The similarities in anterior cruciate ligament injury risk factors (knee abduction torques and angles) may correlate with the consistent incidence of anterior cruciate ligament injury across divisions. © by the National Athletic Trainers' Association, Inc.","Knee flexion angle; Knee valgus; Lower extremity; Women's soccer","Adult; Anterior Cruciate Ligament; Athletic Injuries; Biomechanics; Female; Humans; Knee Joint; Multivariate Analysis; Soccer; article; biomechanics; body mass; body posture; controlled study; data analysis; female; human; human experiment; jumping; kinematics; knee function; muscle force; muscle function; range of motion; sex difference; sport; sport injury; training; adult; anterior cruciate ligament; biomechanics; comparative study; injury; knee; multivariate analysis; pathophysiology; physiology; sport; sport injury","NCAA Injury Surveillance System (ISS) Sport Specific Injury Data, (2003); Schmidt-Olsen S., Jorgensen U., Kaalund S., Sorensen J., Injuries among young soccer players, Am J Sports Med, 19, pp. 273-275, (1991); Nilsson S., Roaas A., Soccer injuries in adolescents, Am J Sports Med, 6, pp. 358-361, (1978); Ostenberg A., Roos H., Injury risk factors in female European football: A prospective study of 123 players during one season, Scand J Med Sci Sports, 10, pp. 279-285, (2000); Griffin L.Y., Agel J., Albohm M.J., Et al., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, J Am Acad Orthop Surg, 8, pp. 141-150, (2000); Boden B.P., Dean G.S., Feagin Jr J.A., Garrett Jr. W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer: NCAA data and review of literature, Am J Sports Med, 23, pp. 694-701, (1995); Gray J., Taunton J.E., McKenzie D.C., Clement D.B., McConkey J.P., Davidson R.G., A survey of injuries to the anterior cruciate ligament of the knee in female basketball players, Int J Sports Med, 6, pp. 314-316, (1985); Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in National Collegiate Athletic Association basketball and soccer: A 13-year review, Am J Sports Med, 33, pp. 524-530, (2005); Malone T.R., Hardaker W.T., Garrett W.E., Feagin J.A., Bassett F.H., Relationship of gender to anterior cruciate ligament injuries in intercollegiate basketball players, J South Orthop Assoc, 2, pp. 36-39, (1993); Withers R.T., Maricic Z., Wasilewski S., Kelly L., Match analysis of Australian professional soccer players, J Hum Move Stud, 8, pp. 159-176, (1982); Piasecki D.P., Spindler K.P., Warren T.A., Andrish J.T., Parker R.D., Intraarticular injuries associated with anterior cruciate ligament tear: Findings at ligament reconstruction in high school and recreational athletes. 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Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am J Sports Med, 30, pp. 261-267, (2002); Huston L.J., Vibert B., Ashton-Miller J.A., Wojtys E.M., Gender differences in knee angle when landing from a drop-jump, Am J Knee Surg, 14, pp. 215-220, (2001); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes: Decreased impact forces and increased hamstring torques, Am J Sports Med, 24, pp. 765-773, (1996); Fagenbaum R., Darling W.G., Jump landing strategies in male and female college athletes and the implications of such strategies for anterior cruciate ligament injury, Am J Sports Med, 31, pp. 233-240, (2003); Lloyd D.G., Buchanan T.S., Besier T.F., Neuromuscular biomechanical modeling to understand knee ligament loading, Med Sci Sports Exerc, 37, pp. 1939-1947, (2005); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Med Sci Sports Exerc, 37, pp. 124-129, (2005); Arnason A., Sigurdsson S.B., Gudmundsson A., Holme I., Engebretsen L., Bahr R., Physical fitness, injuries, and team performance in soccer, Med Sci Sports Exerc, 36, pp. 278-285, (2004); Fry A.C., Kraemer W.J., Physical performance characteristics of American collegiate football players, J Appl Sport Sci Res, 5, pp. 126-128, (1994); Garstecki M.A., Latin R.W., Cuppett M.M., Comparison of selected physical fitness and performance variables between NCAA Division I and II football players, J Strength Cond Res, 18, pp. 292-297, (2004); Wisloff U., Castagna C., Helgerud J., Jones R., Hoff J., Strong correlation of maximal squat strength with sprint performance and vertical jump height in elite soccer players, Br J Sports Med, 38, pp. 285-288, (2004); Harmon K.G., Dick R., The relationship of skill level to anterior cruciate ligament injury, Clin J Sport Med, 8, pp. 260-265, (1998); Wong P., Hong Y., Soccer injury in the lower extremities, Br J Sports Med, 39, pp. 473-482, (2005); Poulsen T.D., Freund K.G., Madsen F., Sandvej K., Injuries in high-skilled and low-skilled soccer: A prospective study, Br J Sports Med, 25, pp. 151-153, (1991); Jacobson I., Tegner Y., Injuries among Swedish female elite football players: A prospective population study, Scand J Med Sci Sports, 17, pp. 84-91, (2007); Ford K.R., Myer G.D., Smith R.L., Bymes R.N., Dopirak S.E., Hewett T.E., Use of an overhead goal alters vertical jump performance and biomechanics, J Strength Cond Res, 19, pp. 394-399, (2005); Cole G.K., Nigg B.M., Ronsky J.L., Yeadon M.R., Application of the joint coordinate system to three-dimensional joint attitude and movement representation: A standardization proposal, J Biomech Eng, 115, pp. 344-349, (1993); Andriacchi T.P., Natarajan R.N., Hurwitz D.E., Musculoskeletal dynamics, locomotion, and clinical applications, Basic Orthopaedic Biomechanics, pp. 37-68, (1997); Winter D.A., Biomechanics and Motor Control of Human Movement, pp. 91-95, (1990); van den Bogert A.J., de Koning J.J., On optimal filtering for inverse dynamics analysis, Proceedings of the IXth Biennial Conference of the Canadian Society for Biomechanics, (1996); 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Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes: A prospective study, Am J Sports Med, 27, pp. 699-706, (1999); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech (Bristol, Avon), 16, pp. 438-445, (2001); Beynnon B.D., Fleming B.C., Anterior cruciate ligament strain in-vivo: A review of previous work, J Biomech, 31, pp. 519-525, (1998); Markolf K.L., Graff-Redford A., Amstutz H.C., In vivo knee stability: A quantitative assessment using an instrumented clinical testing apparatus, J Bone Joint Surg Am, 60, pp. 664-674, (1978); Ekstrand J., Gillquist J., The avoidability of soccer injuries, Int J Sports Med, 4, pp. 124-128, (1983); Myer G.D., Ford K.R., Palumbo J.P., Hewett T.E., Neuromuscular training improves performance and lower-extremity biomechanics in female athletes, J Strength Cond Res, 19, pp. 51-60, (2005); Vanezis A., Lees A., A biomechanical analysis of good and poor performers of the vertical jump, Ergonomics, 48, pp. 1594-1603, (2005); Silvestre R., West C., Maresh C.M., Kraemer W.J., Body composition and physical performance in men's soccer: A study of a National Collegiate Athletic Association Division I team, J Strength Cond Res, 20, pp. 177-183, (2006); Markovic G., Dizdar D., Jukic I., Cardinale M., Reliability and factorial validity of squat and countermovement jump tests, J Strength Cond Res, 18, pp. 551-555, (2004); Zachazewski J.E., Magee D.J., Quillen W.S., Athletic Injuries and Rehabilitation, (1996); Bosco C., Komi P.V., Potentiation of the mechanical behavior of the human skeletal muscle through prestretching, Acta Physiol Scand, 106, pp. 467-472, (1979); Fatouros I.G., Jamurtas A.Z., Leontsini D., Et al., Evaluation of plyometric exercise training, weight training, and their combination on vertical jumping performance and leg strength, J Strength Cond Res, 14, pp. 470-476, (2000); Zajac F.E., Muscle coordination of movement: A perspective, J Biomech, 26, SUPPL. 1, pp. 109-124, (1993); Ekstrand J., Gillquist J., Liljedahl S.O., Prevention of soccer injuries: Supervision by doctor and physiotherapist, Am J Sports Med, 11, pp. 116-120, (1983)","T. E. Hewett; Cincinnati Children's Hospital Medical Center and Research Foundation, MLC 10001, Cincinnati, OH 45229, 3333 Burnet Avenue, United States; email: tim.hewett@cchmc.org","","","10626050","","JATTE","18174935","English","J. Athl. Train.","Article","Final","","Scopus","2-s2.0-39549104567" "Johnson G.R.; Dowson D.; Wright V.","Johnson, G.R. (55456252800); Dowson, D. (55869582600); Wright, V. (7202487767)","55456252800; 55869582600; 7202487767","A biomechanical approach to the design of football boots","1976","Journal of Biomechanics","9","9","","581","582,IN5","","20","10.1016/0021-9290(76)90099-3","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0017120550&doi=10.1016%2f0021-9290%2876%2990099-3&partnerID=40&md5=3931f6dd4c1cd836f882d956901c88eb","Bioengineering Group for the Study, Human Joints. University of Leeds, Leeds, United Kingdom","Johnson G.R., Bioengineering Group for the Study, Human Joints. University of Leeds, Leeds, United Kingdom; Dowson D., Bioengineering Group for the Study, Human Joints. University of Leeds, Leeds, United Kingdom; Wright V., Bioengineering Group for the Study, Human Joints. University of Leeds, Leeds, United Kingdom","A large proportion of all soccer injuries occur at the ankle and take the form of damage to the collateral ligaments. In order to examine the possible influence of footwear on these injuries an experimental and theoretical study was made of the effect of different types of boot on loads in the collateral ligaments during inversion and eversion. This consisted of an experimental measurement of the stiffness of different types of boot in inversion and eversion followed by analysis of a simplified model of the boot and ankle to predict the loads in the collateral ligaments. It was concluded that the old fashioned high boot was 50% stiffer than the current low boot and that it reduced consider-ably the ligamentous load. Furthermore, it was shown that, if low cut footwear was preferred for reasons of mobility, it should be as flexible as possible in the region of the ankle. © 1976.","","Ankle Joint; Biomechanics; Comparative Study; Human; Ligaments, Articular; Models, Biological; Movement; Shoes; Soccer; Sports; Stress, Mechanical; PERSONNEL - Protective Clothing; biomechanics; injury; leg injury; methodology; sport; sport injury; theoretical study; FOOTWEAR; BIOMECHANICS","Bass, Injuries of the lower limb in football, Proc. roy. Soc. Med., 60, pp. 527-530, (1966); Malina, Plagenz, Rarick, Effect of exercise upon the measurable supporting strength of cloth and tape ankle wraps, Res. Quart. Amer. Ass. Health Phys. Ed., 34, pp. 158-165, (1962); McCorkle, Tipton, Karpovich, The effect of adhesive strapping on ankle action, (1963); Outwater, Mastro, Ettlinger, The engineering problem of ski safety, J. Biomechanics, 2, pp. 209-216, (1969); Rarick, Bigley, Karst, Malina, The measurable support of the ankle joint by conventional methods of taping, J. Bone Jnt. Surg., 44 A, pp. 1183-1190, (1962); Reimers, Faust, Ankle injuries, Folia Traumatologica, (1972); Such, Unsworth, Wright, Study of stiffness in human knee joints, Ann Rheum Dis, (1975)","","","","00219290","","JBMCB","965424","English","J. Biomech.","Article","Final","","Scopus","2-s2.0-0017120550" "Collings T.J.; Diamond L.E.; Barrett R.O.D.S.; Timmins R.G.; Hickey J.T.; Du Moulin W.S.; Williams M.D.; Beerworth K.A.; Bourne M.N.","Collings, Tyler J. (57205570855); Diamond, Laura E. (56496397300); Barrett, Rod S. (7202350016); Timmins, Ryan G. (55540471700); Hickey, Jack T. (55882443800); Du Moulin, William S. (56786403900); Williams, Morgan D. (35115817500); Beerworth, Kate A. (57809791100); Bourne, Matthew N. (55937833800)","57205570855; 56496397300; 7202350016; 55540471700; 55882443800; 56786403900; 35115817500; 57809791100; 55937833800","Strength and Biomechanical Risk Factors for Noncontact ACL Injury in Elite Female Footballers: A Prospective Study","2022","Medicine and Science in Sports and Exercise","54","8","","1242","1251","9","17","10.1249/MSS.0000000000002908","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85131397042&doi=10.1249%2fMSS.0000000000002908&partnerID=40&md5=b5d10245f144041480430aa76d6dc7ff","School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia; Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia; Centre of Clinical Research Excellence in Spinal Pain Injury & Health, School of Health & Rehabilitation Sciences, The University of Queensland, Brisbane, Australia; School of Behavioural and Health Sciences, Australian Catholic University, Melbourne, Australia; Sports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre, Australian Catholic University, Fitzroy, VIC, Australia; School of Health, Sport and Professional Practice, Faculty of Life Sciences and Education, University of South Wales, Wales, United Kingdom; Cricket Australia, Albion, Brisbane, Australia; Football Australia, Sydney, Australia; La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Melbourne, Australia","Collings T.J., School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia, Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia; Diamond L.E., School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia, Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia, Centre of Clinical Research Excellence in Spinal Pain Injury & Health, School of Health & Rehabilitation Sciences, The University of Queensland, Brisbane, Australia; Barrett R.O.D.S., School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia, Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia; Timmins R.G., School of Behavioural and Health Sciences, Australian Catholic University, Melbourne, Australia, Sports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre, Australian Catholic University, Fitzroy, VIC, Australia; Hickey J.T., School of Behavioural and Health Sciences, Australian Catholic University, Melbourne, Australia, Sports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre, Australian Catholic University, Fitzroy, VIC, Australia; Du Moulin W.S., School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia, Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia; Williams M.D., School of Health, Sport and Professional Practice, Faculty of Life Sciences and Education, University of South Wales, Wales, United Kingdom; Beerworth K.A., Cricket Australia, Albion, Brisbane, Australia, Football Australia, Sydney, Australia; Bourne M.N., School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia, Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia, La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Melbourne, Australia","Purpose This study aimed to determine if a preseason field-based test battery was prospectively associated with noncontact anterior cruciate ligament (ACL) injury in elite female footballers. Methods In total, 322 elite senior and junior female Australian Rules Football and soccer players had their isometric hip adductor and abductor strength, eccentric knee flexor strength, countermovement jump (CMJ) kinetics, and single-leg hop kinematics assessed during the 2019 preseason. Demographic and injury history details were also collected. Footballers were subsequently followed for 18 months for ACL injury. Results Fifteen noncontact ACL injuries occurred during the follow-up period. Prior ACL injury (odds ratio [OR], 9.68; 95% confidence interval (95% CI), 2.67-31.46), a lower isometric hip adductor to abductor strength ratio (OR, 1.98; 95% CI, 1.09-3.61), greater CMJ peak take-off force (OR, 1.74; 95% CI, 1.09-3.61), and greater single-leg triple vertical hop average dynamic knee valgus (OR, 1.97; 95% CI, 1.06-3.63) and ipsilateral trunk flexion (OR, 1.60; 95% CI, 1.01-2.55) were independently associated with an increased risk of subsequent ACL injury. A multivariable prediction model consisting of CMJ peak take-off force, dynamic knee valgus, and ACL injury history that was internally validated classified ACL injured from uninjured footballers with 78% total accuracy. Between-leg asymmetry in lower limb strength and CMJ kinetics were not associated with subsequent ACL injury risk. Conclusions Preseason field-based measures of lower limb muscle strength and biomechanics were associated with future noncontact ACL injury in elite female footballers. These risk factors can be used to guide ACL injury screening practices and inform the design of targeted injury prevention training in elite female footballers. © 2022 Lippincott Williams & Wilkins.","ACL; BIOMECHANICS; FEMALE ATHLETE; INJURY PREVENTION; REHABILITATION; STRENGTH","Anterior Cruciate Ligament Injuries; Australia; Biomechanical Phenomena; Female; Humans; Muscle Strength; Prospective Studies; Risk Factors; anterior cruciate ligament injury; Australia; biomechanics; female; human; muscle strength; physiology; prospective study; risk factor","Montalvo A.M., Schneider D.K., Silva P.L., What's my risk of sustaining an ACL injury while playing football (soccer)?' 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Numata H., Nakase J., Kitaoka K., Two-dimensional motion analysis of dynamic knee valgus identifies female high school athletes at risk of non-contact anterior cruciate ligament injury, Knee Surg Sports Traumatol Arthrosc, 26, 2, pp. 442-447, (2018); Zazulak B.T., Hewett T.E., Reeves N.P., Goldberg B., Cholewicki J., Deficits in neuromuscular control of the trunk predict knee injury risk: a prospective biomechanical-epidemiologic study, Am J Sports Med, 35, 7, pp. 1123-1130, (2007); Hewett T.E., Torg J.S., Boden B.P., Video analysis of trunk and knee motion during non-contact anterior cruciate ligament injury in female athletes: lateral trunk and knee abduction motion are combined components of the injury mechanism, Br J Sports Med, 43, 6, pp. 417-422, (2009); Dempsey A.R., Elliott B.C., Munro B.J., Steele J.R., Lloyd D.G., Can technique modification training reduce knee moments in a landing task?, J Appl Biomech, 30, 2, pp. 231-236, (2014); Nasseri A., Lloyd D.G., Bryant A.L., Headrick J., Sayer T.A., Saxby D.J., Mechanism of anterior cruciate ligament loading during dynamic motor tasks, Med Sci Sports Exerc, 53, 6, pp. 1235-1244, (2021); Pandy M.G., Zajac F.E., Optimal muscular coordination strategies for jumping, J Biomech, 24, 1, pp. 1-10, (1991); Read P.J., McAuliffe S., Bishop C., Oliver J.L., Graham-Smith P., Farooq M.A., Asymmetry thresholds for common screening tests and their effects on jump performance in professional soccer players, J Athl Train, 56, 1, pp. 46-53, (2020); Paterno M.V., Schmitt L.C., Ford K.R., Biomechanical measures during landing and postural stability predict second anterior cruciate ligament injury after anterior cruciate ligament reconstruction and return to sport, Am J Sports Med, 38, 10, pp. 1968-1978, (2010); King E., Richter C., Daniels K.A., Can biomechanical testing after anterior cruciate ligament reconstruction identify athletes at risk for subsequent ACL injury to the contralateral uninjured limb?, Am J Sports Med, 49, 3, pp. 609-619, (2021); Moore J.M., Cessford K., Willmott A.P., Lower limb biomechanics before and after anterior cruciate ligament reconstruction: a systematic review, J Biomech, 106, (2020); Antosh I.J., Svoboda S.J., Peck K.Y., Garcia E.J., Cameron K.L., Change in KOOS and WOMAC scores in a young athletic population with and without anterior cruciate ligament injury, Am J Sports Med, 46, 7, pp. 1606-1616, (2018); Collings T.J., Diamond L.E., Barrett R.S., Impact of prior anterior cruciate ligament, hamstring or groin injury on lower limb strength and jump kinetics in elite female footballers, Phys Ther Sport, 52, pp. 297-304, (2021); Bahr R., Why screening tests to predict injury do not work-and probably never will: a critical review, Br J Sports Med, 50, 13, pp. 776-780, (2016); Montalvo A.M., Schneider D.K., Webster K.E., Anterior cruciate ligament injury risk in sport: a systematic review and meta-analysis of injury incidence by sex and sport classification, J Athl Train, 54, 5, pp. 472-482, (2019); Crossley K.M., Patterson B.E., Culvenor A.G., Bruder A.M., Mosler A.B., Mentiplay B.F., Making football safer for women: a systematic review and meta-analysis of injury prevention programmes in 11 773 female football (soccer) players, Br J Sports Med, 54, 18, pp. 1089-1098, (2020)","T.J. Collings; Griffith University, Gold Coast, Southport, Parklands Drive, 4215, Australia; email: tyler.collings@griffithuni.edu.au","","Lippincott Williams and Wilkins","01959131","","MSCSB","35320148","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85131397042" "Amiri-Khorasani M.; Abu Osman N.A.; Yusof A.","Amiri-Khorasani, Mohammadtaghi (36090950300); Abu Osman, Noor A. (8511221500); Yusof, Ashril (35331324700)","36090950300; 8511221500; 35331324700","Blomechanical responses of thigh and lower leg during 10 consecutive soccer instep kicks","2011","Journal of Strength and Conditioning Research","25","4","","1177","1181","4","17","10.1519/JSC.0b013e3181d6508c","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79953897697&doi=10.1519%2fJSC.0b013e3181d6508c&partnerID=40&md5=b39d4276827ff097d3d042d0c92440f7","Department of Exercise Science, Sport Center, University of Malaya, Kuala Lumpur, Malaysia; Department of Biomedical Engineering, University of Malaya, Kuala Lumpur, Malaysia","Amiri-Khorasani M., Department of Exercise Science, Sport Center, University of Malaya, Kuala Lumpur, Malaysia; Abu Osman N.A., Department of Biomedical Engineering, University of Malaya, Kuala Lumpur, Malaysia; Yusof A., Department of Exercise Science, Sport Center, University of Malaya, Kuala Lumpur, Malaysia","Amiri-Khorasani, M, Abu Osman, NA, and Yusof, A. Bio-mechanical responses of thigh and lower leg during 10 consecutive soccer instep kicks. J Strength Cond Res 25(4): 1 177-1181, 2011-This study investigated the number of trials necessary to obtain optimal biomechanical responses in 10 consecutive soccer instep kicks. The kicking motions of dominant legs were captured from 5 experienced and skilled adult male soccer players (height: 184.60 6 4.49 cm; mass: 80 6 4.24 kg; and age: 25.60 6 1.14 years) using a 3D infrared high-speed camera at 200 Hz. Some of the important kinematics and kinetics parameters are maximum thigh angular velocity, maximum lower leg angular velocity, maximum of thigh moment, maximum lower leg moment at forward and impact phases, and finally maximum ball velocity after impact selected to be analyzed. There was a significant decrease of ball velocity between the first and the fifth kick and the subsequent kicks. Similarly, the lower leg angular velocity showed a significant decrease after the fifth kick and thereafter. Compared with the first kick, the thigh angular velocity has been shown to decrease after the sixth kick and thereafter, and the thigh moment result of the sixth kick was significantly lower when compared with the first kick. Moreover, the lower leg moment result of the fourth kick was significantly lower in comparison with the first kick. In conclusion, it seems that 5 consecutive kicks are adequate to achieve high kinematics and kinetics responses and selecting more than 5 kicks does not result in any high biomechanical responses for analysis. © 2011 National Strength and Conditioning Association.","Biomechanics; Kicking velocity; Lower extremity; Soccer","Adult; Athletes; Athletic Performance; Biomechanics; Humans; Leg; Male; Muscle, Skeletal; Soccer; Task Performance and Analysis; Thigh; Young Adult; adult; article; athlete; athletic performance; biomechanics; human; leg; male; physiology; skeletal muscle; sport; task performance; thigh","Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-b, pp. 695-700, (1983); Barfield W.R., Effects of selected kinematic and kinetic variables on instep kicking with dominant and nondominant limbs, Journal of Human Movement Studies, 29, 6, pp. 251-272, (1995); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg., Journal of Sports Sciences, 20, 4, pp. 293-299, (2002); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J Sports Sci Med, 6, pp. 154-165, (2007); Lees A., Biomechanics applied to soccer skill, Science and Soccer, pp. 123-134, (2003); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, 3, pp. 211-234, (1998); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, 6, pp. 917-927, (1998); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, 12, pp. 2028-2036, (2002); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, J Sports Sci, 24, pp. 529-541, (2006)","M. Amiri-Khorasani; Department of Exercise Science, Sport Center, University of Malaya, Kuala Lumpur, Malaysia; email: amirikhorasani@gmail.com","","","10648011","","","20838249","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-79953897697" "Caccese J.B.; Buckley T.A.; Tierney R.T.; Rose W.C.; Glutting J.J.; Kaminski T.W.","Caccese, Jaclyn B. (57189060030); Buckley, Thomas A. (25027015000); Tierney, Ryan T. (7004140314); Rose, William C. (57193871976); Glutting, Joseph J. (7004435281); Kaminski, Thomas W. (7005758157)","57189060030; 25027015000; 7004140314; 57193871976; 7004435281; 7005758157","Postural Control Deficits After Repetitive Soccer Heading","2021","Clinical Journal of Sport Medicine","31","3","","266","272","6","22","10.1097/JSM.0000000000000709","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105904421&doi=10.1097%2fJSM.0000000000000709&partnerID=40&md5=8efee697f03001a455f52a58e9f14a0a","Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, United States; Biomechanics and Movement Science Interdisciplinary Program, University of Delaware, Newark, DE, United States; Department of Kinesiology, Temple University, Philadelphia, PA, United States; School of Education, University of Delaware, Newark, DE, United States","Caccese J.B., Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, United States; Buckley T.A., Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, United States, Biomechanics and Movement Science Interdisciplinary Program, University of Delaware, Newark, DE, United States; Tierney R.T., Department of Kinesiology, Temple University, Philadelphia, PA, United States; Rose W.C., Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, United States, Biomechanics and Movement Science Interdisciplinary Program, University of Delaware, Newark, DE, United States; Glutting J.J., School of Education, University of Delaware, Newark, DE, United States; Kaminski T.W., Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, United States, Biomechanics and Movement Science Interdisciplinary Program, University of Delaware, Newark, DE, United States","Objective: To determine the acute effects of repetitive soccer heading on postural control. Design: Prospective study; participants were divided into 2 groups: a soccer heading group and a control group. Setting: Biomechanics laboratory. Participants: One hundred sixty participants, including youth (age = 13.0 ± 0.8 years), high school (age = 17.2 ± 1.0 years), and collegiate (age = 20.2 ± 1.3 years) male and female soccer players, participated in this study. Interventions: Participants in the soccer heading group performed 12 soccer headers (initial velocity = 11.2 m/s). Postural control testing was performed both before (PRE) and immediately after (POST) the purposeful soccer headers. Control participants performed postural control testing PRE and POST a 15-minute wait period. During postural control testing, participants were asked to stand on the MobileMat (Tekscan Inc, Boston, Massachusetts) for two 2-minute intervals with their hands on their hips and their feet together with one eyes-open and one eyes-closed trial. Main Outcome Measures: Using the center-of-pressure data, 95% area, sway velocity, and ApEn were calculated. Multilevel linear models were used to analyze the effects of age, sex, group, condition, and concussion history simultaneously. Results: Participants in the soccer heading group had significantly higher sway velocity POST than participants in the control group after controlling for age, sex, concussion history, condition, and PRE (t = 23.002; P = 0.003; 95% confidence interval, 20.482 to 20.100). There were no significant differences from PRE to POST for 95% area, M/L ApEn, and A/P ApEn. Conclusions: Repetitive soccer heading does not affect most postural control measures, even among youth athletes. However, sway velocity increased after heading relative to control participants independent of age, sex, and concussion history. Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved.","Concussion; Football; Mild traumatic brain injury; Subconcussion","Adolescent; Athletes; Brain Concussion; Female; Head; Humans; Male; Postural Balance; Prospective Studies; Soccer; Young Adult; adolescent; adult; Article; biomechanics; concussion; controlled clinical trial; controlled study; dependent variable; female; football; high school; human; juvenile; major clinical study; male; Massachusetts; maximum likelihood method; outcome assessment; prospective study; questionnaire; soccer; soccer player; sport injury; statistical model; traumatic brain injury; variance; young adult; athlete; body equilibrium; brain concussion; head; injury; pathophysiology; soccer","McCrory P, Meeuwisse W, Dvorak J, Et al., Consensus statement on concussion in sport—the 5th International Conference on Concussion in Sport held in Berlin, October 2016, Br J Sports Med, 51, pp. 838-847, (2017); Bailes JE, Petraglia AL, Omalu BI, Et al., Role of subconcussion in repetitive mild traumatic brain injury: a review, J Neurosurg, 119, pp. 1235-1245, (2013); Belanger HG, Vanderploeg RD, McAllister T., Subconcussive blows to the head: a formative review of short-term clinical outcomes, J Head Trauma Rehabil, 31, pp. 159-166, (2016); Broglio SP, Eckner JT, Paulson HL, Et al., Cognitive decline and aging: the role of concussive and subconcussive impacts, Exerc Sport Sci Rev, 40, (2012); 265 Million Playing Football [FIFA Web Site], (2007); Caccese JB, Kaminski TW., Minimizing head acceleration in soccer: a review of the literature, Sports Med, 46, pp. 1591-1604, (2016); Caccese JB, Buckley TA, Tierney RT, Et al., Sex and age differences in head acceleration during purposeful soccer heading, Res Sports Med, 26, pp. 64-74, (2018); Caccese JB., Head accelerations across collegiate, high school and youth female and male soccer players, Br J Sports Med, 52, pp. 98-99, (2018); Caccese JB, Lamond LC, Buckley TA, Et al., Reducing purposeful headers from goal kicks and punts may reduce cumulative exposure to head acceleration, Res Sports Med, 24, pp. 407-415, (2016); Caccese JB, Buckley TA, Tierney RT, Et al., Head and neck size and neck strength predict linear and rotational acceleration during purposeful soccer heading, Sports Biomech, 17, pp. 462-476, (2018); Lipton ML, Kim N, Zimmerman ME, Et al., Soccer heading is associated with white matter microstructural and cognitive abnormalities, Radiology, 268, pp. 850-857, (2013); Lynall RC, Clark MD, Grand EE, Et al., Head impact biomechanics in women’s college soccer, Med Sci Sports Exerc, 48, pp. 1772-1778, (2016); Press JN, Rowson S., Quantifying head impact exposure in collegiate women’s soccer, Clin J Sport Med, 27, pp. 104-110, (2017); Yang YT, Baugh CM., US youth soccer concussion policy: heading in the right direction, JAMA Pediatr, 170, pp. 413-414, (2016); Maher ME, Hutchison M, Cusimano M, Et al., Concussions and heading in soccer: a review of the evidence of incidence, mechanisms, biomarkers and neurocognitive outcomes, Brain Inj, 28, pp. 271-285, (2014); Higgins MJ, Tierney RT, Caswell S, Et al., An in-vivo model of functional head impact testing in non-helmeted athletes, Proc Inst Mech Eng P, 223, pp. 117-123, (2009); Haran FJ, Tierney R, Wright WG, Et al., Acute changes in postural control after soccer heading, Int J Sports Med, 34, pp. 350-354, (2013); Hwang S, Ma L, Kawata K, Et al., Vestibular dysfunction after subconcussive head impact, J Neurotrauma, 34, pp. 8-15, (2017); Schmitt DM, Hertel J, Evans TA, Et al., Effect of an acute bout of soccer heading on postural control and self-reported concussion symptoms, Int J Sports Med, 25, pp. 326-331, (2004); Dorminy M, Hoogeveen A, Tierney RT, Et al., Effect of soccer heading ball speed on S100B, sideline concussion assessments and head impact kinematics, Brain Inj, 29, pp. 1158-1164, (2015); Jansen P, Lehmann J., Investigating cognitive performance deficits in male and female soccer players after a 4-week heading-training programme: a controlled study, Brain Impair, 19, pp. 133-140, (2017); Rieder C, Jansen P., No neuropsychological consequence in male and female soccer players after a short heading training, Arch Clin Neuropsychol, 26, pp. 583-591, (2011); Kawata K, Rubin LH, Lee JH, Et al., Association of football subconcussive head impacts with ocular near point of convergence, JAMA Ophthalmol, 134, pp. 763-769, (2016); Gutierrez GM, Conte C, Lightbourne K., The relationship between impact force, neck strength, and neurocognitive performance in soccer heading in adolescent females, Pediatr Exerc Sci, 26, pp. 33-40, (2014); Kontos AP, Braithwaite R, Chrisman SP, Et al., Meta-analytical review of the effects of football heading, Br J Sports Med, 51, pp. 1118-1124, (2017); Tarnutzer AA, Straumann D, Brugger P, Et al., Persistent effects of playing football and associated (subconcussive) head trauma on brain structure and function: a systematic review of the literature, Br J Sports Med, 51, pp. 1592-1604, (2017); Who Is US Youth Soccer [US Youth Soccer Web Site], (2014); Participation Statistics [NFSHS Web Site], (2015); Janda DH, Bir CA, Cheney AL., An evaluation of the cumulative concussive effect of soccer heading in the youth population, Inj Control Safe Promot, 9, pp. 25-31, (2002); Salinas CM, Webbe FM, Devore TT., The epidemiology of soccer heading in competitive youth players, J Clin Sport Psychol, 3, pp. 15-33, (2009); O'Kane JW., Is heading in youth soccer dangerous play?, Phys Sportsmed, 44, pp. 190-194, (2016); Gay M, Slobounov S., Concussion: a window into brain–movement relations in motor control, Kinesiol Rev, 7, pp. 51-57, (2018); Llewellyn T, Burdette GT, Joyner AB, Et al., Concussion reporting rates at the conclusion of an intercollegiate athletic career, Clin J Sport Med, 24, pp. 76-79, (2014); Lamond LC, Caccese JB, Buckley TA, Et al., Linear acceleration in direct head contact across impact type, player position, and playing scenario in collegiate women’s soccer players, J Athl Train, 53, pp. 115-121, (2018); Caccese JB, Buckley TA, Kaminski TW., Sway area and velocity correlated with MobileMat balance error scoring system (BESS) scores, J Appl Biomech, 32, pp. 329-334, (2016); Caccese JB, Kaminski TW., Comparing computer-derived and human-observed scores for the balance error scoring system, J Sport Rehab, 25, pp. 133-136, (2016); Ruhe A, Fejer R, Walker B., The test–retest reliability of centre of pressure measures in bipedal static task conditions–a systematic review of the literature, Gait Posture, 32, pp. 436-445, (2010); Gao J, Hu J, Buckley T, Et al., Shannon and Renyi entropies to classify effects of mild traumatic brain injury on postural sway, PLoS One, 6, (2011); Prieto TE, Myklebust JB, Hoffmann RG, Et al., Measures of postural steadiness: differences between healthy young and elderly adults, IEEE Trans Biomed Eng, 43, pp. 956-966, (1996); Yentes JM, Hunt N, Schmid KK, Et al., The appropriate use of approximate entropy and sample entropy with short data sets, Ann Biomed Eng, 41, pp. 349-365, (2013); Cavanaugh JT, Guskiewicz KM, Giuliani C, Et al., Recovery of postural control after cerebral concussion: new insights using approximate entropy, J Athl Train, 41, (2006); Pincus SM, Gladstone IM, Ehrenkranz RA., A regularity statistic for medical data analysis, J Clin Monit Comput, 7, pp. 335-345, (1991); Williams HG, Ho L., Balance and postural control across the lifespan, Developmental Motor Disorders. A Neuropsychological Perspective, pp. 211-234, (2004); Paillard T, Bizid R, Dupui P., Do sensorial manipulations affect subjects differently depending on their postural abilities?, Br J Sports Med, 41, pp. 435-438, (2007); Powers KC, Kalmar JM, Cinelli ME., Recovery of static stability following a concussion, Gait Posture, 39, pp. 611-614, (2014); Lin D, Seol H, Nussbaum MA, Et al., Reliability of COP-based postural sway measures and age-related differences, Gait Posture, 28, pp. 337-342, (2008); Matsuda S, Demura S, Demura T., Examining differences between center of pressure sway in one-legged and two-legged stances for soccer players and typical adults, Percept Mot Skills, 110, pp. 751-760, (2010); Masani K, Popovic MR, Nakazawa K, Et al., Importance of body sway velocity information in controlling ankle extensor activities during quiet stance, J Neurophysiol, 90, pp. 3774-3782, (2003); Buckley TA, Oldham JR, Caccese JB., Postural control deficits identify lingering post-concussion neurological deficits, J Sport Health Sci, 5, pp. 61-69, (2016); Buckley TA, Oldham JR, Munkasy BA, Et al., Decreased anticipatory postural adjustments during gait initiation acutely postconcussion, Arch Phys Med Rehabil, 98, pp. 1962-1968, (2017); Cavanaugh JT, Guskiewicz KM, Stergiou N., A nonlinear dynamic approach for evaluating postural control, Sports Med, 35, pp. 935-950, (2005); Cavanaugh JT, Guskiewicz KM, Giuliani C, Et al., Detecting altered postural control after cerebral concussion in athletes with normal postural stability, Br J Sports Med, 39, pp. 805-811, (2005); Stergiou N, Innovative Analyses of Human Movement, (2004); Guskiewicz KM, Mihalik JP., Biomechanics of sport concussion: quest for the elusive injury threshold, Exerc Sport Sci Rev, 39, pp. 4-11, (2011); Mihalik JP, Lynall RC, Wasserman EB, Et al., Evaluating the “threshold theory”: can head impact indicators help?, Med Sci Sports Exerc, 49, pp. 247-253, (2017)","J.B. Caccese; Department of Kinesiology and Applied Physiology, University of Delaware, Newark, 540 S. College Ave, 19716, United States; email: jcaccese@udel.edu","","Lippincott Williams and Wilkins","1050642X","","CJSME","30550416","English","Clin. J. Sport Med.","Article","Final","","Scopus","2-s2.0-85105904421" "Miller L.E.; Kuo C.; Wu L.C.; Urban J.E.; Camarillo D.B.; Stitzel J.D.","Miller, Logan E. (55955121600); Kuo, Calvin (7404480701); Wu, Lyndia C. (56050329900); Urban, Jillian E. (36119491100); Camarillo, David B. (6506423628); Stitzel, Joel D. (7003389866)","55955121600; 7404480701; 56050329900; 36119491100; 6506423628; 7003389866","Validation of a Custom Instrumented Retainer Form Factor for Measuring Linear and Angular Head Impact Kinematics","2018","Journal of Biomechanical Engineering","140","5","054501","","","","24","10.1115/1.4039165","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042910476&doi=10.1115%2f1.4039165&partnerID=40&md5=e2c837d873e332b4df805e55144938d7","School of Biomedical Engineering and Sciences, Virginia Tech-Wake Forest University, 575 N. Patterson Avenue, Winston-Salem, 27106, NC, United States; Department of Biomedical Engineering, Wake Forest School of Medicine, 575 N. Patterson Avenue, Winston-Salem, 27106, NC, United States; Department of Mechanical Engineering, Stanford University, 443 Via Ortega, Room 202, Stanford, 94305, CA, United States; Department of Bioengineering, Stanford University, 443 Via Ortega, Room 202, Stanford, 94305, CA, United States; Clinical and Translational Science Institute, Wake Forest School of Medicine, 575 N. Patterson Avenue, Winston-Salem, 27106, NC, United States","Miller L.E., School of Biomedical Engineering and Sciences, Virginia Tech-Wake Forest University, 575 N. Patterson Avenue, Winston-Salem, 27106, NC, United States, Department of Biomedical Engineering, Wake Forest School of Medicine, 575 N. Patterson Avenue, Winston-Salem, 27106, NC, United States; Kuo C., Department of Mechanical Engineering, Stanford University, 443 Via Ortega, Room 202, Stanford, 94305, CA, United States; Wu L.C., Department of Bioengineering, Stanford University, 443 Via Ortega, Room 202, Stanford, 94305, CA, United States; Urban J.E., School of Biomedical Engineering and Sciences, Virginia Tech-Wake Forest University, 575 N. Patterson Avenue, Winston-Salem, 27106, NC, United States, Department of Biomedical Engineering, Wake Forest School of Medicine, 575 N. Patterson Avenue, Winston-Salem, 27106, NC, United States, Clinical and Translational Science Institute, Wake Forest School of Medicine, 575 N. Patterson Avenue, Winston-Salem, 27106, NC, United States; Camarillo D.B., Department of Bioengineering, Stanford University, 443 Via Ortega, Room 202, Stanford, 94305, CA, United States, Clinical and Translational Science Institute, Wake Forest School of Medicine, 575 N. Patterson Avenue, Winston-Salem, 27106, NC, United States; Stitzel J.D., School of Biomedical Engineering and Sciences, Virginia Tech-Wake Forest University, 575 N. Patterson Avenue, Winston-Salem, 27106, NC, United States, Department of Biomedical Engineering, Wake Forest School of Medicine, 575 N. Patterson Avenue, Winston-Salem, 27106, NC, United States","Head impact exposure in popular contact sports is not well understood, especially in the youth population, despite recent advances in impact-sensing technology which has allowed widespread collection of real-time head impact data. Previous studies indicate that a custom-instrumented mouthpiece is a superior method for collecting accurate head acceleration data. The objective of this study was to evaluate the efficacy of mounting a sensor device inside an acrylic retainer form factor to measure six-degrees-of-freedom (6DOF) head kinematic response. This study compares 6DOF mouthpiece kinematics at the head center of gravity (CG) to kinematics measured by an anthropomorphic test device (ATD). This study found that when instrumentation is mounted in the rigid retainer form factor, there is good coupling with the upper dentition and highly accurate kinematic results compared to the ATD. Peak head kinematics were correlated with r2 > 0.98 for both rotational velocity and linear acceleration and r2 = 0.93 for rotational acceleration. These results indicate that a rigid retainer-based form factor is an accurate and promising method of collecting head impact data. This device can be used to study head impacts in helmeted contact sports such as football, hockey, and lacrosse as well as nonhelmeted sports such as soccer and basketball. Understanding the magnitude and frequency of impacts sustained in various sports using an accurate head impact sensor, such as the one presented in this study, will improve our understanding of head impact exposure and sports-related concussion. Copyright © 2018 by ASME.","angular acceleration; angular velocity; brain injury; concussion; instrumentation; linear acceleration; mouthguard; validation","Biomechanical Phenomena; Head; Humans; Materials Testing; Mechanical Phenomena; Acceleration; Angular velocity; Approximation theory; Degrees of freedom (mechanics); Kinematics; Population statistics; Angular acceleration; Brain injury; concussion; instrumentation; Linear accelerations; mouthguard; validation; acceleration; Article; devices; football; gravity; head; hockey; kinematics; soccer; velocity; biomechanics; devices; human; materials testing; mechanics; validation study; Sports","Wu L.C., Nangia V., Bui K., Hammoor B., Kurt M., Hernandez F., Kuo C., Camarillo D.B., In Vivo Evaluation of Wearable Head Impact Sensors, Ann. Biomed. Eng, 44, 4, pp. 1234-1245, (2016); Tyson A., Rowson S., Duma S., Laboratory Evaluation of Low- Cost Wearable Head Impact Sensors, Ann Biomed Eng. Rev, (2018); Campbell K.R., Warnica M.J., Levine I.C., Brooks J.S., Laing A.C., Burkhart T.A., Dickey J.P., Laboratory Evaluation of the gForce TrackerTM, a Head Impact Kinematic Measuring Device for Use in Football Helmets, Ann. Biomed. Eng, 44, 4, pp. 1246-1256, (2016); Jadischke R., Viano D.C., Dau N., King A.I., McCarthy J., On the Accuracy of the Head Impact Telemetry (HIT) System Used in Football Helmets, J. Biomech, 46, 13, pp. 2310-2315, (2013); Siegmund G.P., Guskiewicz K.M., Marshall S.W., DeMarco A.L., Bonin S.J., Laboratory Validation of Two Wearable Sensor Systems for Measuring Head Impact Severity in Football Players, Ann. Biomed. Eng, 44, 4, pp. 1257-1274, (2016); Kuo C., Wu L.C., Hammoor B.T., Luck J.F., Cutcliffe H.C., Lynall R.C., Kait J.R., Campbell K.R., Mihalik J.P., Bass C.R., Camarillo D.B., Effect of the Mandible on Mouthguard Measurements of Head Kinematics, J. Biomech, 49, 9, pp. 1845-1853, (2016); Beckwith J.G., Greenwald R.M., Chu J.J., Measuring Head Kinematics in Football: Correlation between the Head Impact Telemetry System and Hybrid III Headform, Ann. Biomed. Eng, 40, 1, pp. 237-248, (2012); Broglio S.P., Sosnoff J.J., Shin S., He X., Alcaraz C., Zimmerman J., Head Impacts during High School Football: A Biomechanical Assessment, J. Athletic Train, 44, 4, (2009); Duma S.M., Manoogian S.J., Bussone W.R., Brolinson P.G., Goforth M.W., Donnenwerth J.J., Greenwald R.M., Chu J.J., Crisco J.J., Analysis of Real-Time Head Accelerations in Collegiate Football Players, Clin. J. Sport Med, 15, 1, pp. 3-8, (2005); Pellman E.J., Viano D.C., Tucker A.M., Casson I.R., Concussion in Professional Football: Location and Direction of Helmet Impacts-Part 2, Neurosurgery, 53, 6, pp. 1328-1340, (2003); Urban J.E., Davenport E.M., Golman A.J., Maldjian J.A., Whitlow C.T., Powers A.K., Stitzel J.D., Head Impact Exposure in Youth Football: High School Ages 14 to 18 Years and Cumulative Impact Analysis, Ann. Biomed. Eng, 41, 12, pp. 2474-2487, (2013); Cobb B.R., Urban J.E., Davenport E.M., Rowson S., Duma S.M., Maldjian J.A., Whitlow C.T., Powers A.K., Stitzel J.D., Head Impact Exposure in Youth Football: Elementary School Ages 9-12 Years and the Effect of Practice Structure, Ann. Biomed. Eng, 41, 12, pp. 2463-2473, (2013); Holbourn A., Mechanics of Head Injuries, Lancet, 242, 6267, pp. 438-441, (1943); Margulies S.S., Thibault L.E., A Proposed Tolerance Criterion for Diffuse Axonal Injury in Man, J. Biomech, 25, 8, pp. 917-923, (1992); Ommaya A.K., Gennarelli T., Cerebral Concussion and Traumatic Unconsciousness. Correlation of Experimental and Clinical Observations of Blunt Head Injuries, Brain, 97, 1, pp. 633-654, (1974); Hanlon E.M., Bir C.A., Real-Time Head Acceleration Measurement in Girls' Youth Soccer, Med. Sci. Sports Exercise, 44, 6, pp. 1102-1108, (2012); Caccese J.B., Lamond L.C., Buckley T.A., Kaminski T.W., Reducing Purposeful Headers from Goal Kicks and Punts May Reduce Cumulative Exposure to Head Acceleration, Res. Sports Med, 24, 4, pp. 407-415, (2016); Press J.N., Rowson S., Quantifying Head Impact Exposure in Collegiate Women's Soccer, Clin. J. Sport Med, 27, 2, pp. 104-110, (2016); O'Day K.M., Koehling E.M., Vollavanh L.R., Bradney D., May J.M., Breedlove K.M., Breedlove E.L., Blair P., Nauman E.A., Bowman T.G., Comparison of Head Impact Location during Games and Practices in Division III Men's Lacrosse Players, Clin. Biomech, 43, pp. 23-27, (2017); King D., Hume P., Gissane C., Clark T., Head Impacts in a Junior Rugby League Team Measured with a Wireless Head Impact Sensor: An Exploratory Analysis, J. Neurosurg. Pediatr, 19, 1, pp. 13-23, (2017); King D., Hume P.A., Brughelli M., Gissane C., Instrumented Mouthguard Acceleration Analyses for Head Impacts in Amateur Rugby Union Players over a Season of Matches, Am. J. Sports Med, 43, 3, pp. 614-624, (2014); Hernandez F., Wu L.C., Yip M.C., Laksari K., Hoffman A.R., Lopez J.R., Grant G.A., Kleiven S., Camarillo D.B., Six Degree-of- Freedom Measurements of Human Mild Traumatic Brain Injury, Ann. Biomed. Eng, 43, 8, pp. 1918-1934, (2015); Wu L.C., Zarnescu L., Nangia V., Cam B., Camarillo D.B., A Head Impact Detection System Using SVM Classification and Proximity Sensing in an Instrumented Mouthguard, Biomed. Eng. IEEE Trans, 61, 11, pp. 2659-2668, (2014); Camarillo D.B., Shull P.B., Mattson J., Shultz R., Garza D., An Instrumented Mouthguard for Measuring Linear and Angular Head Impact Kinematics in American Football, Ann. Biomed. Eng, 41, 9, pp. 1939-1949, (2013); Instrumentation for Impact Test, Part I: Electronic Instrumentation, (2007); Abramowitz M., Stegun I.A., Handbook of Mathematical Functions: With Formulas, Graphs, and Mathematical Tables, 55, (1965); Rowson S., Beckwith J.G., Chu J.J., Leonard D.S., Greenwald R.M., Duma S.M., A Six Degree of Freedom Head Acceleration Measurement Device for Use in Football, J. Appl. Biomech, 27, 1, pp. 8-14, (2011); Wu L.C., Laksari K., Kuo C., Luck J.F., Kleiven S., Cameron R., Camarillo D.B., Bandwidth and Sample Rate Requirements for Wearable Head Impact Sensors, J. Biomech, 49, 13, pp. 2918-2924, (2016)","J.D. Stitzel; School of Biomedical Engineering and Sciences, Virginia Tech-Wake Forest University, Winston-Salem, 575 N. Patterson Avenue, 27106, United States; email: jstitzel@wakehealth.edu","","American Society of Mechanical Engineers (ASME)","01480731","","JBEND","29383374","English","J. Biomech. Eng.","Article","Final","","Scopus","2-s2.0-85042910476" "Chaudhari A.M.W.; Jamison S.T.; McNally M.P.; Pan X.; Schmitt L.C.","Chaudhari, Ajit M.W. (7006736811); Jamison, Steven T. (35976250500); McNally, Michael P. (55796135700); Pan, Xueliang (13005873700); Schmitt, Laura C. (35727884200)","7006736811; 35976250500; 55796135700; 13005873700; 35727884200","Hip adductor activations during run-to-cut manoeuvres in compression shorts: implications for return to sport after groin injury","2014","Journal of Sports Sciences","32","14","","1333","1340","7","22","10.1080/02640414.2014.889849","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84906081502&doi=10.1080%2f02640414.2014.889849&partnerID=40&md5=56f963f0efda9d0b55d3b62edf3d0a1c","Department of Orthopaedics, The Ohio State University, Columbus, OH, United States; Kinesiology and Applied Physiology, University of Delaware, Newark, DE, United States; Sports Health and Performance Institute, The Ohio State University, Columbus, OH, United States; Department of Biomedical Informatics, The Ohio State University, Columbus, OH, United States; School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH, United States","Chaudhari A.M.W., Department of Orthopaedics, The Ohio State University, Columbus, OH, United States; Jamison S.T., Kinesiology and Applied Physiology, University of Delaware, Newark, DE, United States; McNally M.P., Sports Health and Performance Institute, The Ohio State University, Columbus, OH, United States; Pan X., Department of Biomedical Informatics, The Ohio State University, Columbus, OH, United States; Schmitt L.C., School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH, United States","Athletes at high risk of groin strains in sports such as hockey and soccer often choose to wear shorts with directional compression to aid in prevention of or recovery from hip adductor strains. Large, eccentric contractions are known to result in or exacerbate strain injuries, but it is unknown if these shorts have a beneficial effect on hip adductor muscle activity. In this study, surface electromyography (EMG) of the adductor longus and ground reaction force (GRF) data were obtained simultaneously on 29 healthy individuals without previous history of serious injury while performing unanticipated 45° run-to-cut manoeuvres in a laboratory setting wearing shorts with non-directional compression (control, HeatGear, Under Armour, USA) or shorts with directional compression (directional, CoreShort PRO, Under Armour, USA), in random order. Average adductor activity in the stance leg was significantly lower in the directional condition than in the control condition during all parts of stance phase (all P < 0.042). From this preliminary analysis, wearing directional compression shorts appears to be associated with reduced stance limb hip adductor activity. Athletes seeking to reduce demand on the hip adductors as they approach full return to activities may benefit from the use of directional compression shorts. © 2014 © 2014 Taylor & Francis.","adductor; biomechanics; groin; strain","Athletes; Athletic Injuries; Biomechanical Phenomena; Clothing; Electromyography; Groin; Hip; Hip Joint; Hockey; Humans; Intermittent Pneumatic Compression Devices; Muscle, Skeletal; Pressure; Running; Soccer; Sprains and Strains; athlete; Athletic Injuries; biomechanics; clothing; controlled clinical trial; controlled study; electromyography; hip; hockey; human; inguinal region; injuries; injury; intermittent pneumatic compression device; physiology; pressure; running; skeletal muscle; soccer","Arnason A., Sigurdsson S.B., Gudmundsson A., Holme I., Engebretsen L., Bahr R., Risk factors for injuries in football, The American Journal of Sports Medicine, 32, (2004); Bernhardt T., Anderson G.S., Influence of moderate prophylactic compression on sport performance, Journal of Strength and Conditioning Research, 19, 2, pp. 292-297, (2005); Besier T.F., Lloyd D.G., Ackland T.R., Cochrane J.L., Anticipatory effects on knee joint loading during running and cutting maneuvers, Medicine and Science in Sports and Exercise, 33, 7, pp. 1176-1181, (2001); Bringard A., Perrey S., Belluye N., Aerobic energy cost and sensation responses during submaximal running exercise positive effects of wearing compression tights, International Journal of Sports Medicine, 27, 5, pp. 373-378, (2006); Criswell E., Cram's introduction to surface electromyography, (2011); Day J., Compression apparel tightening grip on market, Sports Insight, pp. 65-66, (2011); Doan B.K., Kwon Y.H., Newton R.U., Shim J., Popper E.M., Rogers R.A., Kraemer W.J., Evaluation of a lower-body compression garment, Journal of Sports Sciences, 21, 8, pp. 601-610, (2003); Duffield R., Portus M., Edge J., Comparison of three types of full-body compression garments on throwing and repeat-sprint performance in cricket players * COMMENTARY, British Journal of Sports Medicine, 41, 7, pp. 409-414, (2007); Ekstrand J., Hilding J., The incidence and differential diagnosis of acute groin injuries in male soccer players, Scandinavian Journal of Medicine and Science in Sports, 9, 2, pp. 98-103, (1999); Emery C.A., Meeuwisse W.H., Risk factors for groin injuries in hockey, Medicine and Science in Sports and Exercise, 33, 9, pp. 1423-1433, (2001); Engebretsen A.H., Myklebust G., Holme I., Engebretsen L., Bahr R., Intrinsic risk factors for groin injuries among male soccer players: A prospective cohort study, The American Journal of Sports Medicine, 38, 10, pp. 2051-2057, (2010); Friden J., Lieber R.L., Structural and mechanical basis of exercise-induced muscle injury, Medicine and Science in Sports and Exercise, 24, 5, pp. 521-530, (1992); Hemingway M.A., Biedermann H.-J., Inglis J., Electromyographic recordings of paraspinal muscles: Variations related to subcutaneous tissue thickness, Biofeedback and Self-Regulation, 20, 1, pp. 39-49, (1995); Holmich P., Larsen K., Krogsgaard K., Gluud C., Exercise program for prevention of groin pain in football players: A cluster-randomized trial [Randomized Controlled Trial], Scandinavian Journal of Medicine and Science in Sports, 20, 6, pp. 814-821, (2010); Holmich P., Nyvold P., Larsen K., Continued significant effect of physical training as treatment for overuse injury: 8- to 12-year outcome of a randomized clinical trial [Randomized Controlled Trial], The American Journal of Sports Medicine, 39, 11, pp. 2447-2451, (2011); Holmich P., Renstrom P.A., Long-standing groin pain in sportspeople falls into three primary patterns, a ""clinical entity"" approach: a prospective study of 207 patients * COMMENTARY, British Journal of Sports Medicine, 41, 4, pp. 247-252, (2007); Holmich P., Thorborg K., Dehlendorff C., Krogsgaard K., Gluud C., Incidence and clinical presentation of groin injuries in sub-elite male soccer, British Journal of Sports Medicine, (2013); Holmich P., Uhrskou P., Ulnits L., Kanstrup I.-L., Nielsen M.B., Bjerg A.M., Krogsgaard K., Effectiveness of active physical training as treatment for long-standing adductor-related groin pain in athletes: Randomised trial, The Lancet, 353, 9151, pp. 439-443, (1999); Jamison S.T., Pan X., Chaudhari A.M.W., Knee moments during run-to-cut maneuvers are associated with lateral trunk positioning, Journal of Biomechanics, 45, 11, pp. 1881-1885, (2012); Kollock Jr. R.O., Onate J.A., Van Lunen B., The reliability of portable fixed dynamometry during hip and knee strength assessments, Journal of Athletic Training, 45, 4, pp. 349-356, (2010); Kraemer W.J., Bush J.A., Triplett-McBride N.T., Koziris L.P., Mangino L.C., Fry A.C., Newton R.U., Compression garments: Influence on muscle fatigue, Journal of Strength and Conditioning Research, 12, 4, pp. 211-215, (1998); Kraemer W.J., Bush J.A., Wickham R.B., Denegar C.R., Gomez A.L., Gotshalk L.A., Sebastianelli W.J., Continuous compression as an effective therapeutic intervention in treating eccentric-exercise-induced muscle soreness, Journal of Sport Rehabilitation, 10, 1, pp. 11-23, (2001); Kuiken T.A., Lowery M.M., Stoykov N.S., The effect of subcutaneous fat on myoelectric signal amplitude and cross-talk, Prosthetics and Orthotics International, 27, 1, pp. 48-54, (2003); Lieber R.L., Friden J., Muscle damage is not a function of muscle force but active muscle strain, Journal of Applied Physiology, 74, 2, pp. 520-526, (1993); Maffey L., Emery C., What are the risk factors for groin strain injury in sport?: A systematic review of the literature, Sports Medicine, 37, 10, pp. 881-894, (2007); Neumann D.A., Kinesiology of the hip: A focus on muscular actions, Journal of Orthopaedic and Sports Physical Therapy, 40, 2, pp. 82-94, (2010); Nicholas S.J., Tyler T.F., Adductor muscle strains in sport, Sports Medicine, 32, 5, pp. 339-344, (2002); Nordander C., Willner J., Hansson G.A., Larsson B., Unge J., Granquist L., Skerfving S., Influence of the subcutaneous fat layer, as measured by ultrasound, skinfold calipers and BMI, on the EMG amplitude, European Journal of Applied Physiology, 89, 6, pp. 514-519, (2003); Tegner Y., Lysholm J., Rating systems in the evaluation of knee ligament injuries, Clinical Orthopaedics and Related Research, 198, pp. 43-49, (1985); Thorborg K., Holmich P., Advancing hip and groin injury management: From eminence to evidence, British Journal of Sports Medicine, 47, 10, pp. 602-605, (2013); Thorborg K., Serner A., Petersen J., Madsen T.M., Magnusson P., Holmich P., Hip adduction and abduction strength profiles in elite soccer players: Implications for clinical evaluation of hip adductor muscle recovery after injury, The American Journal of Sports Medicine, 39, 1, pp. 121-126, (2011); Tyler T.F., Nicholas S.J., Campbell R.J., Donellan S., McHugh M.P., The effectiveness of a preseason exercise program to prevent adductor muscle strains in professional ice hockey players, American Journal of Sports Medicine, 30, 5, pp. 680-683, (2002); Tyler T.F., Nicholas S.J., Campbell R.J., McHugh M.P., The association of hip strength and flexibility with the incidence of adductor muscle strains in professional ice hockey players, The American Journal of Sports Medicine, 29, 2, pp. 124-128, (2001); Witvrouw E., Danneels L., Asselman P., D'Have T., Cambier D., Muscle flexibility as a risk factor for developing muscle injuries in male professional soccer players: A prospective study, The American Journal of Sports Medicine, 31, 1, pp. 41-46, (2003)","A. M. W. Chaudhari; Department of Orthopaedics, The Ohio State University, Columbus, OH 43221, 2050 Kenny Road, United States; email: chaudhari.2@osu.edu","","Routledge","02640414","","JSSCE","24669858","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84906081502" "Vieira L.H.P.; Cunha S.A.; Moraes R.; Barbieri F.A.; Aquino R.; Oliveira L.D.P.; Navarro M.; Bedo B.L.S.; Santiago P.R.P.","Vieira, Luiz H. P. (56789595600); Cunha, Sérgio A. (16416879600); Moraes, Renato (8093103700); Barbieri, Fabio A. (35798078800); Aquino, Rodrigo (57192645540); Oliveira, Lucas de P. (57192647430); Navarro, Martina (7201561479); Bedo, Bruno L. S. (56790057800); Santiago, Paulo R. P. (36098423400)","56789595600; 16416879600; 8093103700; 35798078800; 57192645540; 57192647430; 7201561479; 56790057800; 36098423400","Kicking Performance in Young U9 to U20 Soccer Players: Assessment of Velocity and Accuracy Simultaneously","2018","Research Quarterly for Exercise and Sport","89","2","","210","220","10","19","10.1080/02701367.2018.1439569","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85043345249&doi=10.1080%2f02701367.2018.1439569&partnerID=40&md5=ad75be53a25f471eea47681d73e3fb6f","University of São Paulo, Brazil; UNICAMP, Brazil; São Paulo State University, Brazil; University of Porto, Portugal; Federal University of São Paulo, Brazil; University of Bern, Switzerland","Vieira L.H.P., University of São Paulo, Brazil; Cunha S.A., UNICAMP, Brazil; Moraes R., University of São Paulo, Brazil; Barbieri F.A., São Paulo State University, Brazil; Aquino R., University of São Paulo, Brazil, University of Porto, Portugal; Oliveira L.D.P., University of São Paulo, Brazil; Navarro M., Federal University of São Paulo, Brazil, University of Bern, Switzerland; Bedo B.L.S., University of São Paulo, Brazil; Santiago P.R.P., University of São Paulo, Brazil","Purpose: The purpose of this study was to compare the kicking performance of young soccer players in the U9 to U20 age groups. Method: Three hundred and sixty-six Brazilian players were evaluated on an official pitch using three-dimensional kinematics to measure (300 Hz) ball velocity (Vball), foot velocity (Vfoot), Vball/Vfoot ratio, last stride length, and distance between the support foot and the ball. Simultaneously, a two-dimensional procedure was also conducted to compute (60 Hz) the mean radial error, bivariate variable error, and accuracy. Possible age-related differences were assessed through one-way analysis of variance and magnitude-based inferences. Results: Ball velocity increased by 103% (p <.001, η2 =.39) from the U11 age group (48.54 ± 8.31 km/hr) to the U20 age group (98.74 ± 16.35 km/hr). Foot velocity presented a 59% increase (p <.001, η2 =.32) from the U11 age group (49.08 ± 5.16 km/hr) to U20 (78.24 ± 9.49 km/hr). This finding was due to improvement in the quality of foot–ball impact (Vball/Vfoot ratio) from U11 (0.99 ± 0.13 a.u.) to U20 (1.26 ± 0.11 a.u.; p <.001, η2 =.25). Parameters such as mean radial error and accuracy appeared to be impaired during the growth spurt (U13–U15). Last stride length was correlated, low to moderately high, with Vball in all age groups (r =.36–.79). Conclusions: In summary, we concluded that simple biomechanical parameters of kicking performance presented distinct development. These results suggest that different training strategies specific for each age group could be applied. We provide predictive equations to aid coaches in the long-term monitoring process to develop the kick in soccer or search for talented young players. © 2018 SHAPE America.","Association football; development; technical skill; three-dimensional kinematics","Acceleration; Adolescent; Age Factors; Biomechanical Phenomena; Brazil; Child; Foot; Humans; Male; Motor Skills; Physical Conditioning, Human; Soccer; Sports Equipment; Time and Motion Studies; Young Adult; analysis of variance; article; controlled study; foot; football; groups by age; growth acceleration; human; kinematics; monitoring; pitch; skill; soccer player; velocity; acceleration; adolescent; age; biomechanics; Brazil; child; exercise; male; motor performance; physiology; soccer; sports equipment; task performance; young adult","Anderson D.I., Sidaway B., Coordination changes associated with practice of a soccer kick, Research Quarterly for Exercise and Sport, 65, pp. 93-99, (1994); Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, Journal of Sports Sciences, 24, pp. 951-960, (2006); 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Katis A., Kellis E., Lees A., Age and gender differences in kinematics of powerful instep kicks in soccer, Sports Biomechanics, 14, pp. 287-299, (2015); Kugler P., Kelso J.S., Turvey M., Kelso J.A.S., Clark J.E., On the control and coordination of naturally developing systems, The development of movement control and coordination, (1982); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, pp. 805-817, (2010); Lees A., Kershaw L., Moura F., Reilly T., Cabri J., The three-dimensional nature of the maximal instep kick in soccer, Science and football V, (2005); Malina R.M., Cumming S.P., Kontos A.P., Eisenmann J.C., Ribeiro B., Aroso J., Maturity-associated variation in sport-specific skills of youth soccer players aged 13–15 years, Journal of Sports Sciences, 23, pp. 515-522, (2005); Malina R.M., Ribeiro B., Aroso J., Cumming S.P., Characteristics of youth soccer players aged 13–15 years classified by skill level, British Journal of Sports Medicine, 41, pp. 290-295, (2007); 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Parker D.F., Round J.M., Sacco P., Jones D.A., A cross-sectional survey of upper and lower limb strength in boys and girls during childhood and adolescence, Annals of Human Biology, 17, pp. 199-211, (1990); Rosch D., Hodgson R., Peterson T.L., Graf-Baumann T., Junge A., Chomiak J., Dvorak J., Assessment and evaluation of football performance, American Journal of Sports Medicine, 28, pp. S29-S39, (2000); Teixeira M.C., Teixeira L.A., Leg preference and interlateral performance asymmetry in soccer player children, Developmental Psychobiology, 50, pp. 799-806, (2008); Vaeyens R., Malina R.M., Janssens M., Van Renterghem B., Bourgois J., Vrijens J., Philippaerts R.M., A multidisciplinary selection model for youth soccer: The Ghent Youth Soccer Project, British Journal of Sports Medicine, 40, pp. 928-934, (2006); van den Tillaar R., Ulvik A., Influence of instruction on velocity and accuracy in soccer kicking of experienced soccer players, Journal of Motor Behavior, 46, pp. 287-291, (2014); Vieira L.H., De Andrade V.L., Aquino R.L., Moraes R., Barbieri F.A., Cunha S.A., Santiago P.R., Construct validity of tests that measure kick performance for young soccer players based on cluster analysis: Exploring the relationship between coaches rating and actual measures, Journal of Sports Medicine and Physical Fitness, 57, pp. 1613-1622, (2017); Vieira L.H., de Souza Serenza F., de Andrade V.L., de Paula Oliveira L., Mariano F.P., Santana J.E., Santiago P.R., Kicking performance and muscular strength parameters with dominant and nondominant lower limbs in Brazilian elite professional futsal players, Journal of Applied Biomechanics, 32, pp. 578-585, (2016); Weineck J., Functional anatomy in sports, (1990); Wilson R.S., James R.S., Gwendolyn D., Hermann E., Morgan O.J., Niehaus A.C., Smith M.D., Multivariate analyses of individual variation in soccer skill as a tool for talent identification and development: Utilising evolutionary theory in sport science, Journal of Sports Sciences, 34, pp. 2074-2086, (2016); Wong P.L., Chamari K., Dellal A., Wisloff U., Relationship between anthropometric and physiological characteristics in youth soccer players, Journal of Strength and Conditioning Research, 23, pp. 1204-1210, (2009); Young W.B., Rath D.A., Enhancing foot velocity in football kicking: The role of strength training, Journal of Strength and Conditioning Research, 25, pp. 561-566, (2011)","P.R.P. Santiago; School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Preto, Av. Bandeirantes 3900, Monte Alegre–Ribeirão, 14040-907, Brazil; email: paulosantiago@usp.br","","Routledge","02701367","","RQESD","29513093","English","Res. Q. Exerc. Sport","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85043345249" "Jandacka D.; Uchytil J.","Jandacka, Daniel (24921295800); Uchytil, Jaroslav (36694365500)","24921295800; 36694365500","Optimal load maximizes the mean mechanical power output during upper extremity exercise in highly trained soccer players","2011","Journal of Strength and Conditioning Research","25","10","","2764","2772","8","22","10.1519/JSC.0b013e31820dbc6d","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84856195926&doi=10.1519%2fJSC.0b013e31820dbc6d&partnerID=40&md5=851bbd883572f0577fb00d1b2db4a7cb","Human Motion Diagnostic Center, University of Ostrava, Ostrava, Czech Republic","Jandacka D., Human Motion Diagnostic Center, University of Ostrava, Ostrava, Czech Republic; Uchytil J., Human Motion Diagnostic Center, University of Ostrava, Ostrava, Czech Republic","The purpose of this study was to determine the optimal load for the maximal power output during the acceleration phase of a power movement in bench press (BP) exercises of highly trained soccer players at the beginning of a competition period. Fifteen professional male soccer players with an average age of 26.1 ± 3.9 years, an average height of 183.3 6 ±.7 cm, an average body mass of 78.8 ± 7.2 kg, and an average 1 repetition maximum (1RM) of 83.3611.2 kg were employed as subjects in this study. Maximal mean power output during a BP at 0, 10, 30, 50, 70, and 90% of their 1RM was measured to determine whether an optimal load exists that allows for the attainment of maximal power output. Threedimensional upper extremity kinematic data were collected. Two force plates embedded in the floor and positioned below the bench were used to measure contact forces between the bench and ground during the lift. A repeated-measures analysis of variance was performed to determine power output differences at different percentages of the 1RM. The results of this study indicated that loads of 50% of the 1RM resulted in greater mean power output during the complete positive power movement. Loads at 30 and 50% of the 1RM resulted in greater mean power output computed from the acceleration phase of the lift than did all loads and were not statistically different from each other. However, individual soccer players did not reach the maximum power output with the same relative load. In conclusion, when soccer players develop muscular power toward the end of when the most important competitions are scheduled, dynamic effort strength training with the range of load from 30 to 50% of 1RM BP should be used. During the competition period, a load of 50% of a 1RM should be used in a BP to maintain muscular power over a wide load range. © 2011 National Strength and Conditioning Association.","Bench press; Biomechanics; Modeling; Training","Adult; Athletes; Biomechanics; Exercise; Humans; Male; Muscle Strength; Muscle, Skeletal; Physical Endurance; Soccer; Upper Extremity; Weight Lifting; Weight-Bearing; Young Adult; adult; arm; article; athlete; biomechanics; endurance; exercise; human; male; muscle strength; physiology; skeletal muscle; sport; weight bearing; weight lifting","Baker D., Comparison of upper-body strength and power between professional and college-aged rugby league players, Journal of Strength and Conditioning Research, 15, 1, pp. 30-35, (2001); Baker D., Nance S., Moore M., The load that maximizes the average mechanical power output during explosive bench press throws in highly trained athletes, Journal of Strength and Conditioning Research, 15, 1, pp. 20-24, (2001); Bevan H., Bunce P., Owen N., Bennett M., Cook C., Cunninghem D., Newton R., Kilduff L., Optimal loading for the development of peak power output in professional rugby players, J Strength Cond Res, 24, pp. 43-47, (2010); Cormie P., McBride J.M., McCaulley G.O., Validation of power measurement techniques in dynamic lower body resistance exercises, Journal of Applied Biomechanics, 23, 2, pp. 103-118, (2007); Cronin J.B., McNair P.J., Marshall R.N., Force-velocity analysis of strength-training techniques and load: Implications for training strategy and research, Journal of Strength and Conditioning Research, 17, 1, pp. 148-155, (2003); Falvo M., Schilling B., Weiss L., Techniques and considerations for determining isoinertial upper-body power, Sports Biomech, 5, pp. 293-311, (2006); Frost D., Cronin J., Newton R., Have we underestimated the kinematic and kinetic benefits of non-ballistic motion?, Sports Biomech, 7, pp. 372-385, (2008); Hanavan E.P., A Mathematical Model of the Human Body, (1964); Hopkins W.G., Measures of reliability in sports medicine and science, Sports Medicine, 30, 1, pp. 1-15, (2000); Hori N., Newton U.R., Andrews A.W., Kawamori N., McGuigan R.M., Nosaka K., Comparison of four different methods to measure power output during the hang power clean and the weighted jump squat, J Strength Cond Res, 21, pp. 314-320, (2007); Hori N., Newton R.U., Nosaka K., McGuigan M.R., Comparison of different methods of determining power output in weightlifting exercises, Strength and Conditioning Journal, 28, 2, pp. 34-40, (2006); Izquierdo M., Ibanez J., Gorostiaga E., Garrues M., Zuacuteniga A., Anton A., Larrion J., Hakkinen K., Maximal strength and power characteristics in isometric and dynamic actions of the upper and lower extremities in middle-aged and older men, Acta Physiol Scand, 167, pp. 57-68, (1999); Jandacka D., Vaverka F., A regression model to determine load for maximum power output, Sports Biomech, 7, pp. 361-371, (2008); Jandacka D., Vaverka F., Validity of mechanical power measurement at bench press exercise, J Hum Kinet, 21, pp. 33-43, (2009); Kaneko M., Fuchimoto T., Toji H., Suei K., Training effect of different loads on the force-velocity relationship and mechanical power output in human muscle, Scandinavian Journal of Sports Sciences, 5, 2, pp. 50-55, (1983); Kawamori N., Haff G.G., The optimal training load for the development of muscular power, Journal of Strength and Conditioning Research, 18, 3, pp. 675-684, (2004); Knuttgen H.G., Kraemer J.W., Terminology and measurement in exercise measurement, J Appl Sport Sci Res, 1, pp. 1-10, (1987); Kraemer J.W., Ratamess A.N., Fry C.A., French N.D., Strength training: Development and evaluation of methodology, Physiological Assessment of Human Fitness, pp. 119-150, (2006); Kutac P., Gajda V., Validity of measuring the body composition by means of the BIA and skin fold method in the male population with regular motion activities, Acta Facultatis Exercitationis Corporis Universitatis Presoviensis, 1, (2009); Moss B.M., Refsnes P.E., Abildgaard A., Nicolaysen K., Jensen J., Effects of maximal effort strength training with different loads on dynamic strength, cross-sectional area, load-power and load-velocity relationships, European Journal of Applied Physiology and Occupational Physiology, 75, 3, pp. 193-199, (1997); Newton R., Dugan E., Application of strength diagnosis, Strength Cond J, 24, pp. 50-59, (2002); Newton R.U., Murphy A.J., Humphries B.J., Wilson G.J., Kraemer W.J., Hakkinen K., Influence of load and stretch shortening cycle on the kinematics, kinetics and muscle activation that occurs during explosive upper-body movements, European Journal of Applied Physiology and Occupational Physiology, 75, 4, pp. 333-342, (1997); Newton R.U., Kraemer W.J., Hakkinen K., Humphries B.J., Murphy A.J., Kinematics, kinetics, and muscle activation during explosive upper body movements, Journal of Applied Biomechanics, 12, 1, pp. 31-43, (1996); Siegel J.A., Gilders R.M., Staron R.S., Hagerman F.C., Human muscle power output during upper-and lower-body exercises, J Strength Cond Res, 16, pp. 173-178, (2002); Thomas G., Kraemer W., Spiering B., Volek J., Anderson J., Maresh C., Maximal power at different percentages of one repetition maximum: Influence of resistance and gender, J Strength Cond Res, 21, pp. 336-342, (2007); Toji H., Kaneko M., Effect of multiple-load training on the force-velocity relationship, Journal of Strength and Conditioning Research, 18, 4, pp. 792-795, (2004); Toji H., Suei K., Kaneko M., Effects of combined training loads on relations among force, velocity, and power development, Canadian Journal of Applied Physiology, 22, 4, pp. 328-336, (1997); Wilkie D.R., The relation between force and velocity in human muscle, J Physiol, 110, pp. 249-280, (1950); Wilson G.J., Newton R.U., Murphy A.J., Humphries B.J., The optimal training load for the development of dynamic athletic performance, Medicine and Science in Sports and Exercise, 25, 11, pp. 1279-1286, (1993); Zatsiorsky V.M., Kinetics of Human Motion, (2002); Zatsiorsky V.M., Kraemer J.W., Science and Practice of Strength Training, (2006)","D. Jandacka; Human Motion Diagnostic Center, University of Ostrava, Ostrava, Czech Republic; email: daniel.jandacka@osu.c","","","10648011","","","21912283","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-84856195926" "Arundale A.J.H.; Kvist J.; Hägglund M.; Fältström A.","Arundale, Amelia J. H. (56529660500); Kvist, Joanna (6701797719); Hägglund, Martin (6602402288); Fältström, Anne (55949393300)","56529660500; 6701797719; 6602402288; 55949393300","Jump performance in male and female football players","2020","Knee Surgery, Sports Traumatology, Arthroscopy","28","2","","606","613","7","19","10.1007/s00167-019-05747-1","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85074698908&doi=10.1007%2fs00167-019-05747-1&partnerID=40&md5=38ede037fb5a75a74e7c3079907612e2","Division of Physiotherapy, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden; Division of Physiotherapy, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden; Football Research Group, Linköping University, Linköping, Sweden; Region Jönköping County, Rehabilitation Centre, Ryhov County Hospital, Jönköping, 551 85, Sweden","Arundale A.J.H., Division of Physiotherapy, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden; Kvist J., Division of Physiotherapy, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden, Division of Physiotherapy, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden; Hägglund M., Division of Physiotherapy, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden, Football Research Group, Linköping University, Linköping, Sweden; Fältström A., Division of Physiotherapy, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden, Region Jönköping County, Rehabilitation Centre, Ryhov County Hospital, Jönköping, 551 85, Sweden","Purpose: To examine differences between men and women football players in clinically feasible jumping measures. Methods: Female football players (N = 46, ages 16–25) were matched based on age, training frequency, and playing position with 46 male players. All players performed the tuck jump and drop vertical jump (DVJ). DVJ was assessed quantitatively for valgus knee motion and probability of a high peak knee abduction moment (pKAM), as well as sagittal plane hip, knee, and ankle angles, and qualitatively with visual assessment of the player’s knees upon landing; graded as good, reduced, or poor control. Result: Women had higher total tuck jump scores (5 ± 2) (more technique flaws), than men (3 ± 2, P < 0.01). The quantitative analysis of the DVJ found that men had greater asymmetries between limbs, but women landed bilaterally in more knee valgus (interaction P = 0.04, main effect of sex P = 0.02). There was no difference in pKAM (interaction n.s.). Women also landed in less hip flexion (P = 0.01) and ankle dorsiflexion (P = 0.01) than men. The qualitative DVJ analysis found that more women (48%) had poor knee control compared to men (11%, P < 0.01). Conclusions: The results indicate that women perform worse on the tuck jump assessment than men. The results support previous findings that women land in more knee valgus than men, but also found that men may have larger asymmetries in knee valgus. These results from clinically feasible measures provide some suggestions for clinicians to consider during ACL reconstruction rehabilitation to enhance performance. © 2019, The Author(s).","ACL; Anterior cruciate ligament; Drop vertical jump; Knee; Prevention; Rehabilitation; Sex; Soccer; Tuck jump; Valgus","Adolescent; Adult; Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Female; Humans; Knee Joint; Male; Movement; Sex Factors; Soccer; Young Adult; adolescent; adult; anterior cruciate ligament injury; biomechanics; female; human; injury; knee; male; movement (physiology); pathophysiology; physiology; sex factor; soccer; young adult","Carson D.W., Ford K.R., Sex differences in knee abduction during landing: a systematic review, Sports Health, 3, pp. 373-382, (2011); Cohen J., Statistical power analysis for the behavioral sciences, (1988); Eltoukhy M., Asfour S., Thompson C., Latta L., Evaluation of the performance of digital video analysis of human motion: Dartfish tracking system, Int J Sci Eng Res, 3, pp. 1-6, (2012); Fort-Vanmeerhaeghe A., Benet A., Mirada S., Montalvo A.M., Myer G.D., Sex and maturation differences in performance of functional jumping and landing deficits in youth athletes, J Sport Rehabil, 14, pp. 1-8, (2019); Fort-Vanmeerhaeghe A., Montalvo A.M., Lloyd R.S., Read P., Myer G.D., Intra- and inter-rater reliability of the modified tuck jump assessment, J Sports Sci Med, 16, pp. 117-124, (2017); Faltstrom A., Hagglund M., Kvist J., Functional performance among active female soccer players after unilateral primary anterior cruciate ligament reconstruction compared with knee-healthy controls, Am J Sports Med, 45, pp. 377-385, (2017); Gokeler A., Dingenen B., Between-session and inter-rater reliability of the modified tuck jump assessment in healthy adult athletes, Phys Ther Sport, 37, pp. 10-14, (2019); Herrington L., Myer G.D., Munro A., Intra and inter-tester reliability of the tuck jump assessment, Phys Ther Sport, 14, pp. 152-155, (2013); Hewett T., Myer G., Ford K., Heidt R., Colosimo A., McLean S., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Hewett T.E., Ford K.R., Hoogenboom B.J., Myer G.D., Understanding and preventing acl injuries: current biomechanical and epidemiologic considerations-update 2010, N Am J Sports Phys Ther, 5, pp. 234-251, (2010); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J Bone Joint Surg Am, 86, pp. 1601-1608, (2004); Kim D.K., Park W.H., Sex differences in knee strength deficit 1 year after anterior cruciate ligament reconstruction, J Phys Ther Sci, 27, pp. 3847-3849, (2015); Landry S.C., McKean K.A., Hubley-Kozey C.L., Stanish W.D., Deluzio K.J., Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated side-cut maneuver, Am J Sports Med, 35, pp. 1888-1900, (2007); Lentz T.A., Tillman S.M., Indelicato P.A., Moser M.W., George S.Z., Chmielewski T.L., Factors associated with function after anterior cruciate ligament reconstruction, Sports Health, 1, pp. 47-53, (2009); Lininger M.R., Smith C.A., Chimera N.J., Hoog P., Warren M., Tuck jump assessment: an exploratory factor analysis in a college age population, J Strength Cond Res, 31, pp. 653-659, (2017); McLean S., Huang X., Su A., van den Bogert A., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clin Biomech, 19, pp. 828-838, (2004); Mizner R.L., Chmielewski T.L., Toepke J.J., Tofte K.B., Comparison of two-dimensional measurement techniques for predicting knee angle and moment during a drop vertical jump, Clin J Sport Med, 22, pp. 221-227, (2012); Myer G., Ford K., Brent J., Hewett T., Differential neuromuscular training effects on ACL injury risk factors in “high-risk” versus “low-risk” athletes, BMC Musculoskelet Dis, 8, (2007); Myer G., Paterno M.V., Ford K.R., Quatman C.E., Hewett T.E., Rehabilitation after anterior cruciate ligament reconstruction: criteria-based progression through the return-to-sport phase, J Orthop Sports Phys Ther, 36, pp. 385-402, (2006); Myer G.D., Brent J.L., Ford K.R., Hewett T.E., Real-time assessment and neuromuscular training feedback techniques to prevent ACL injury in female athletes, Strength Cond J, 33, pp. 21-35, (2011); Myer G.D., Ford K.R., Hewett T.E., New method to identify athletes at high risk of ACL injury using clinic-based measurements and freeware computer analysis, Br J Sports Med, 45, pp. 238-244, (2011); Myer G.D., Ford K.R., Hewett T.E., Tuck jump assessment for reducing anterior cruciate ligament injury risk, Athl Ther Today, 13, pp. 39-44, (2008); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Clinical correlates to laboratory measures for use in non-contact anterior cruciate ligament injury risk prediction algorithm, Clin Biomech, 25, pp. 693-699, (2010); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Development and validation of a clinic-based prediction tool to identify female athletes at high risk for anterior cruciate ligament injury, Am J Sports Med, 38, pp. 2025-2033, (2010); Nilstad A., Andersen T.E., Kristianslund E., Bahr R., Myklebust G., Steffen K., Et al., Physiotherapists can identify female football players with high knee valgus angles during vertical drop jumps using real-time observational screening, J Orthop Sports Phys Ther, 44, pp. 358-365, (2014); Paterno M., Schmitt L., Ford K., Rauh M., Myer G., Huang B., Et al., Biomechanical measures during landing and postural stability predict second anterior cruciate ligament injury after anterior cruciate ligament reconstruction and return to sport, Am J Sports Med, 38, pp. 1968-1978, (2010); Prodromos C.C., Han Y., Rogowski J., Joyce B., Shi K., A meta-analysis of the incidence of anterior cruciate ligament tears as a function of gender, sport, and a knee injury–reduction regimen, Arthroscopy, 23, pp. 1320-1325, (2007); Read P.J., Oliver J.L., de Ste Croix M.B., Myer G.D., Lloyd R.S., Reliability of the tuck jump injury risk screening assessment in elite male youth soccer players, J Strength Cond Res, 30, pp. 1510-1516, (2016); Read P.J., Oliver J.L., De Ste Croix M.B.A., Myer G.D., Lloyd R.S., Landing kinematics in elite male youth soccer players of different chronologic ages and stages of maturation, J Athl Train, 53, pp. 372-378, (2018); Schmitt L., Paterno M.V., Hewett T., The impact of quadriceps femoris strength asymmetry on functional performance at return to sport following anterior cruciate ligament reconstruction, J Orthop Sports Phys Ther, 42, pp. 750-759, (2012); Schmitt L.C., Paterno M.V., Ford K.R., Myer G.D., Hewett T.E., Strength asymmetry and landing mechanics at return to sport after ACL reconstruction, Med Sci Sport Exer, 47, pp. 1426-1434, (2014); Smith C.A., Olson B.K., Olson L.A., Chimera N.J., Warren M., Comparison of female collegiate athletes and college age cohort in tuck jump assessment, J Strength Cond Res, 31, pp. 1048-1054, (2017); Stanley L.E., Kerr Z.Y., Dompier T.P., Padua D.A., Sex differences in the incidence of anterior cruciate ligament, medial collateral ligament, and meniscal injuries in collegiate and high school sports, Am J Sports Med, 44, pp. 1565-1572, (2016); Stensrud S., Myklebust G., Kristianslund E., Bahr R., Krosshaug T., Correlation between two-dimensional video analysis and subjective assessment in evaluating knee control among elite female team handball players, Br J Sports Med, 45, pp. 589-595, (2011); Walden M., Hagglund M., Magnusson H., Ekstrand J., Anterior cruciate ligament injury in elite football: a prospective three-cohort study, Knee Surg Sport Traumatol Arthrosc, 19, pp. 11-19, (2011); Walden M., Hagglund M., Werner J., Ekstrand J., The epidemiology of anterior cruciate ligament injury in football (soccer): a review of the literature from a gender-related perspective, Knee Surg Sport Traumatol Arthrosc, 19, pp. 3-10, (2011); Webster K.E., Feller J.A., Leigh W.B., Richmond A.K., Younger patients are at increased risk for graft rupture and contralateral injury after anterior cruciate ligament reconstruction, Am J Sports Med, 42, pp. 641-647, (2014); Yu B., McClure S.B., Onate J., Guskiewicz K., Kirkendall D.T., Garrett W., Age and gender effects on lower extremity kinematics of youth soccer players in a stop-jump task, Am J Sports Med, 33, pp. 1356-1364, (2005)","A. Fältström; Region Jönköping County, Rehabilitation Centre, Ryhov County Hospital, Jönköping, 551 85, Sweden; email: anne.faltstrom@rjl.se","","Springer","09422056","","","31667569","English","Knee Surg. Sports Traumatol. Arthroscopy","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85074698908" "Manolopoulos E.; Katis A.; Manolopoulos K.; Kalapotharakos V.; Kellis E.","Manolopoulos, Evaggelos (6504424477); Katis, Athanasios (23135001400); Manolopoulos, Konstantinos (57086824800); Kalapotharakos, Vasileios (6507220278); Kellis, Eleftherios (6603815400)","6504424477; 23135001400; 57086824800; 6507220278; 6603815400","Effects of a 10-week resistance exercise program on soccer kick biomechanics and muscle strength","2013","Journal of Strength and Conditioning Research","27","12","","3391","3401","10","21","10.1519/JSC.0b013e3182915f21","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893414308&doi=10.1519%2fJSC.0b013e3182915f21&partnerID=40&md5=df1c86afb1495d87030fc7984a94ae64","Department of Physical Education and Sport Sciences of Serres, Laboratory of Neuromechanics, Aristotle University of Thessaloniki, Serres, Greece; Department of Physical Education and Sport Sciences, Democretus University of Thrace, Komotini, Greece","Manolopoulos E., Department of Physical Education and Sport Sciences of Serres, Laboratory of Neuromechanics, Aristotle University of Thessaloniki, Serres, Greece; Katis A., Department of Physical Education and Sport Sciences of Serres, Laboratory of Neuromechanics, Aristotle University of Thessaloniki, Serres, Greece; Manolopoulos K., Department of Physical Education and Sport Sciences of Serres, Laboratory of Neuromechanics, Aristotle University of Thessaloniki, Serres, Greece; Kalapotharakos V., Department of Physical Education and Sport Sciences, Democretus University of Thrace, Komotini, Greece; Kellis E., Department of Physical Education and Sport Sciences of Serres, Laboratory of Neuromechanics, Aristotle University of Thessaloniki, Serres, Greece","The purpose of the study was to examine the effects of a resistance exercise program on soccer kick biomechanics. Twenty male amateur soccer players were divided in the experimental group (EG) and the control group (CG), each consisting of 10 players. The EG followed a 10-week resistance exercise program mainly for the lower limb muscles. Maximal instep kick kinematics, electromyography, and ground reaction forces (GRFs) as well as maximum isometric leg strength were recorded before and after training. A 2-way analysis of variance showed significantly higher ball speed values only for the EG (26.14 ±1.17 m·s-1 vs. 27.59 ± 1.49 m·s -1 before and after training, respectively), whereas no significant differences were observed for the CG. The EG showed a decline in joint angular velocities and an increase in biceps femoris electromyography of the swinging leg during the backswing phase followed by a significant increase in segmental and joint velocities and muscle activation of the same leg during the forward swing phase (p < 0.05). The EG also showed significantly higher vertical GRFs and rectus femoris and gastrocnemius activation of the support leg (p < 0.05). Similarly, maximum and explosive isometric force significantly increased after training only for the EG (p < 0.05). These results suggest that increases in soccer kicking performance after a 10-week resistance training program were accompanied by increases in maximum strength and an altered soccer kick movement pattern, characterized by a more explosive backwardforward swinging movement and higher muscle activation during the final kicking phase. © 2013 National Strength and Conditioning Association.","Ball speed; Soccer; Strength; Weight training","Adolescent; Athletic Performance; Biomechanical Phenomena; Electromyography; Healthy Volunteers; Humans; Isometric Contraction; Leg; Male; Muscle Strength; Resistance Training; Soccer; Young Adult; adolescent; article; athletic performance; biomechanics; controlled clinical trial; controlled study; electromyography; human; leg; male; methodology; muscle isometric contraction; muscle strength; normal human; physiology; randomized controlled trial; resistance training; soccer; young adult","Aagaard P., Trolle M., Simonsen E.B., Bangsbo J., Klausen K., High speed knee extension capacity of soccer players after different kinds of strength training, Science and Football II, pp. 92-94, (1993); Anthrakidis N., Skoufas D., Lazaridis S., Zaggelidis G., Relationship between muscular strength and kicking performance, Physical Training, 10, (2008); Billot M., Martin A., Paizis C., Cometti C., Babault N., Effects of an electrostimulation training program on strength, jumping, and kicking capacities in soccer players, J Strength Cond Res, 24, pp. 1407-1413, (2010); Cabri J., De Proft E., Dufour W., Clarys J., The relation between muscular strength and kick performance, Science and Football, pp. 186-193, (1988); Commetti G., Maffiuletti N.A., Pousson M., Maffiulli N., Isokinetic strength and anaerobic power of elite, subelite and amateur French soccer players, Int J Sports Med, 22, pp. 45-51, (2001); De Proft E., Cabri J., Dufour W., Clarys J.P., Strength training and kick performance in soccer, Science and Football, pp. 108-113, (1988); Dorge H.C., Andersen B.T., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, J Sports Sci, 20, pp. 293-299, (2002); Dorge H.C., Andersen B.T., Sorensen H., Simonsen E.B., Aagard H., Dyhre-Poulsen P., Klausen K., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scand J Med Sci Sports, 9, pp. 195-200, (1999); Dutta P., Subramanium S., Effect of six weeks of isokinetic strength training combined with skill training on football kicking performance, Science and Football IV, pp. 333-340, (2002); Fleck S., Kraemer W., Designing Resistance Training Programs, (2003); Ingen Schenau G.J., Bobbert M.F., De Haan A., Does elastic energy enhance work and efficiency in the stretch-shortening cycle?, J Appl Biomech, 13, pp. 389-415, (1997); Katis A., Giannadakis E., Kannas T., Amiridis I., Kellis E., Lees A., Mechanisms that influence accuracy of the soccer kick, J Electromyogr Kinesiol; Katis A., Kellis E., Three-dimensional kinematics and ground reaction forces during the instep and outstep soccer kicks in pubertal players, J Sports Sci, 28, pp. 1233-1241, (2010); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J Sports Sci Med, 6, pp. 154-165, (2007); Kellis E., Katis A., The relationship between isokinetic knee extension and flexion strength with soccer kick kinematics: An electromyographic evaluation, J Sports MedPhys Fitness, 47, pp. 385-394, (2007); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Med Sci Sports Exerc, 36, pp. 1017-1028, (2004); Lees A., Asai T., Andresen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, J Sports Sci, 28, pp. 805-817, (2010); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med Sci Sports Exerc, 30, pp. 917-927, (1998); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 441-448, (1988); Manolopoulos E., Papadopoulos C., Kellis E., Effects of combined strength and kick coordination training on soccer kick biomechanics in amateur players, Scand J Med Sci Sports, 16, pp. 102-110, (2006); Masuda K., Kikuhara N., Demura S., Katsuta S., Yamanaka K., Relationship between muscle strength in various isokinetic movements and kick performance among soccer players, J Sports MedPhys Fitness, 45, pp. 44-52, (2005); Mognini M., Narici V., Sirtori D., Lorenzelli F., Isokinetic torques and kicking maximal ball velocity in young soccer players, J Sports Med Phys Fitness, 34, pp. 357-361, (1994); Narici M., Sirtori M., Mognoni P., Maximal ball velocity and peak torques of hip flexor and knee extensor muscles, Science and Football, pp. 429-433, (1988); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med Sci Sports Exerc, 34, pp. 2028-2036, (2002); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, J Sports Sci, 24, pp. 529-541, (2006); Orchard J., Walt S., McIntosh A., Garlick D., Muscle activity during the drop punt kick, Science and Football IV, pp. 32-43, (2002); Perez-Gomez J., Olmedillas H., Delgado-Guerra S., Ara I., Vicente-Rodriguez G., Ortiz R.A., Chavarren J., Calbet J.A., Effects of weight lifting training combined with plyometric exercises on physical fitness, body composition, and knee extension velocity during kicking in football, Appl Physiol Nutr Metab, 33, pp. 501-510, (2008); Reilly T., Bangsbo J., Franks A., Anthropometric and physiological predispositions for elite soccer, J Sports Sci, 18, pp. 669-683, (2000); Rubley M., Haase A., Holcomb W., Girouard T., Tandy R., The effect of plyometric training on power and kicking distance in female adolescent soccer players, J Strength Cond Res, 25, pp. 129-134, (2011); Campo S.S., Matheu A., Redondo J.C., Cuadrado G., Effects of plyometric training on explosive strength, acceleration capacity and kicking speed in young elite soccer players, J Sports Med Phys Fitness, 51, pp. 50-58, (2011); Campo S.S., Vaeyens R., Philippaerts R.M., Redondo J.C., De Benito A.M., Cuadrado G., Effects of lower-limb plyometric training on body composition, explosive strength, and kicking speed in female soccer players, J Strength Cond Res, 23, pp. 1714-1722, (2009); Scurr J., Abbott V., Ball N., Quadriceps EMG muscle activation during accurate soccer instep kicking, J Sports Sci, 29, pp. 247-251, (2011); Taina F., Grehaigne J.F., Cometti G., The influence of maximal strength training of lower limbs of soccer players on their physical and kick performances, Science and Football II, pp. 98-103, (1993); Trolle M., Aagaard P., Simonsen J., Bangsbo J., Klaysen K., Effects of strength training on kicking performance in soccer, Science and Football II, pp. 95-98, (1993); Winter D.A., Biomechanics of Human Movement, (1979); Winter D.A., Biomechanics and Motor Control of Human Movement, (1990); Winter D.A., Fuglevand A., Archer S., Crosstalk in surface electromyography: Theoretical and practical estimates, J Electromyogr Kinesiol, 4, pp. 15-26, (1994); Wong P.L., Chaouachi A., Chamari K., Dellal A., Wisloff U., Effect of preseason concurrent muscular strength and high-intensity interval training in professional soccer players, J Strength Cond Res, 24, pp. 653-660, (2010); Young W.B., Rath D.A., Enhancing foot velocity in football kicking: The role of strength training, J Strength Cond Res, 25, pp. 561-566, (2011)","E. Kellis; Department of Physical Education and Sport Sciences of Serres, Laboratory of Neuromechanics, Aristotle University of Thessaloniki, Serres, Greece; email: ekellis@phed-sr.auth.gr","","","15334295","","","23539080","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-84893414308" "Poulmedis P.; Rondoyannis G.; Mitsou A.; Tsarouchas E.","Poulmedis, P. (6506384037); Rondoyannis, G. (6504277453); Mitsou, A. (56632398500); Tsarouchas, E. (55280531500)","6506384037; 6504277453; 56632398500; 55280531500","The influence of isokinetic muscle torque exerted in various speeds on soccer ball velocity","1988","Journal of Orthopaedic and Sports Physical Therapy","10","3","","93","96","3","24","10.2519/jospt.1988.10.3.93","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0023686916&doi=10.2519%2fjospt.1988.10.3.93&partnerID=40&md5=c49d7ba5bddce8ea758ba1fb37d5ae54","Greece","Poulmedis P., Greece; Rondoyannis G., Greece; Mitsou A., Greece; Tsarouchas E., Greece","Numerous variables influence soccer kick performance and among those initial soccer ball velocity is considered to be important. The purpose of this study was to investigate the correlation between initial ball velocity and two physical charactistics: relative isokinetic torque of the lower extremity and muscle contraction velocity. Eleven elite Greek soccer players age 25.5 ± 3 years, weight 73.6 ± 5.6 kg, height 176.5 ± 5.5 cm, were tested on an isokinetic apparatus at different angular velocities to determine isokinetic muscle torque of the dominant lower extremity. To determine muscle contraction velocity and initial soccer ball velocity a cycling ergometer and a photocell apparatus were used, respectively. Relative isokinetic muscle torque values of the lower extremity were at 30°/sec 3.29 ± 0.32 Nm/kg, at 90°/sec 2.49 ± 0.28 Nm/kg, and at 180°/sec 1.75 ± 0.24 Nm/kg. Muscle contraction velocity was 3.69 ± 0.27 c/s and initial ball velocity was 27.08 ± 1.32 m/s. Initial ball velocity correlated significantly with relative isokinetic muscle torque at different angular velocities as follows:P at 30°/sec, r = 0.82, p < 0.01; at 90°/sec, r = 0.73, p < 0.02; at 180°/sec, r = 0.64, p < 0.05. Initial ball velocity was also significantly correlated with muscle contraction velocity (r = 0.77, p < 0.01). These results indicate that both physical qualities, i.e, relative isokinetic torque and muscle contraction velocity are significant variables related to soccer ball velocity which is considered to be an important factor of soccer kick performance.","","adult; biomechanics; human; human experiment; leg; male; muscle isometric contraction; muscle strength; normal human; sports medicine; velocity","","","","","01906011","","JOSPD","","English","J. ORTHOP. SPORTS PHYS. THER.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-0023686916" "Liu K.; Glutting J.; Wikstrom E.; Gustavsen G.; Royer T.; Kaminski T.W.","Liu, Kathy (55488921500); Glutting, Joseph (7004435281); Wikstrom, Erik (6603871240); Gustavsen, Geoff (55383904200); Royer, Todd (8627813200); Kaminski, Thomas W. (7005758157)","55488921500; 7004435281; 6603871240; 55383904200; 8627813200; 7005758157","Examining the diagnostic accuracy of dynamic postural stability measures in differentiating among ankle instability status","2013","Clinical Biomechanics","28","2","","211","217","6","24","10.1016/j.clinbiomech.2012.11.003","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84875751713&doi=10.1016%2fj.clinbiomech.2012.11.003&partnerID=40&md5=d6a6ceeccbd0d3906b5adf334166f5ec","Department of Exercise and Sport Science, University of Evansville, Evansville, IN, United States; School of Education, University of Delaware, Newark, DE, United States; Department of Kinesiology, University of North Carolina at Charlotte, Charlotte, NC, United States; Biomechanics and Movement Sciences, University of Delaware, Newark, DE, United States; Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, United States","Liu K., Department of Exercise and Sport Science, University of Evansville, Evansville, IN, United States; Glutting J., School of Education, University of Delaware, Newark, DE, United States; Wikstrom E., Department of Kinesiology, University of North Carolina at Charlotte, Charlotte, NC, United States; Gustavsen G., Biomechanics and Movement Sciences, University of Delaware, Newark, DE, United States; Royer T., Biomechanics and Movement Sciences, University of Delaware, Newark, DE, United States, Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, United States; Kaminski T.W., Biomechanics and Movement Sciences, University of Delaware, Newark, DE, United States, Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, United States","Background Dynamic postural stability is defined as the ability to transition from a dynamic movement to a stable condition over one's base of support. Measures of dynamic stability have been used extensively to classify ankle instability status and assist clinicians with ankle injury interventions. Therefore, the purpose of this study was to determine if current methods of quantifying dynamic stability are accurate in differentiating among healthy, coper, and unstable ankles. Methods One hundred ninety four Division-I collegiate athletes (football, volleyball, field hockey, men's/women's soccer, men's/women's lacrosse, men's/women's basketball) volunteered for this study. Participants were categorized into healthy, coper, and stable groups by a self-reported questionnaire and previous history of ankle injuries. Dynamic postural stability was assessed using the Multi-Directional Dynamic Stability Protocol by jumping and landing single-legged onto a force platform from four different directions. Receiver operator curves were used to analyze the accuracy of current techniques of calculating dynamic stability among groups. Findings None of the existing methods were found to be accurate in differentiating ankle instability status in any of the jump landings. Interpretation Researchers have commonly used these existing methods to quantify dynamic postural stability. None of the current calculation techniques worked with our jump landing protocol. Researchers need to pay attention to the protocol and calculation technique pairings in that using inaccurate measures of dynamic postural stability makes any findings of that research ineffective. Therefore, this challenges researchers to develop a more accurate calculation to quantify dynamic postural stability, or develop a jump landing protocol that exposes sensorimotor deficits in the more able-bodied population. © 2012 Elsevier Ltd.","Ankle copers; Keywords; ROC curves; Time-to-stabilization","Adult; Ankle Joint; Athletic Injuries; Female; Humans; Joint Instability; Male; Postural Balance; ROC Curve; Young Adult; Landing; Research; SportS; Accurate calculations; Ankle copers; Calculation techniques; Injury interventions; Keywords; Receiver operator curves; ROC curves; Time-to-stabilization; adult; ankle instability; article; biomechanics; body posture; calculation; clinical protocol; diagnostic accuracy; dynamic postural stability; female; human; major clinical study; male; priority journal; questionnaire; self report; Stability","Bahr R., Pena F., Shine J., Lew W.D., Lindquist C., Tyrdal S., Mechanics of the anterior drawer and talar tilt tests. A cadaveric study of lateral ligament injuries of the ankle, Acta Orthop. Scand., 68, pp. 435-441, (1997); Brown C., Padua D., Marshall S.W., Guskiewicz K., Individuals with mechanical ankle instability exhibit different motion patterns than those with functional ankle instability and ankle sprain copers, Clin. Biomech., 23, pp. 822-831, (2008); Brown C., Bowser B., Orellana A., Dynamic postural stability in females with chronic ankle instability, Med. Sci. Sports Exerc., 42, pp. 2258-2263, (2010); Colby S.M., Hintermeister R.A., Torry M.R., Steadman J.R., Lower limb stability with ACL impairment, J. Orthop. Sports Phys. Ther., 29, pp. 444-451, (1999); Dufek J.S., Bates B.T., Biomechanical factors associated with injury during landing in jump sports, Sports Med., 12, pp. 326-337, (1991); Freeman M.A., Instability of the foot after injuries to the lateral ligament of the ankle, J. Bone Joint Surg. 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Ther., 35, (2005); Hiller C.E., Refshauge K.M., Bundy A.C., Herbert R.D., Kilbreath S.L., The Cumberland ankle instability tool: A report of validity and reliability testing, Arch. Phys. Med. Rehabil., 87, pp. 1235-1241, (2006); Hootman J.M., Dick R., Agel J., Epidemiology of collegiate injuries for 15 sports: Summary and recommendations for injury prevention initiatives, J. Athl. Train., 42, pp. 311-319, (2007); Liu K., Heise G.D., The effect of jump-landing directions on dynamic stability, J. Appl. Biomech.; McKinley P., Pedotti A., Motor strategies in landing from a jump: The role of skill in task execution, Exp. Brain Res., 90, pp. 427-440, (1992); Prieto T.E., Myklebust J.B., Hoffmann R.G., Lovett E.G., Myklebust B.M., Measures of postural steadiness: Differences between healthy young and elderly adults, IEEE Trans. Biomed. Eng., 43, pp. 956-966, (1996); Rice M.E., Harris G.T., Comparing effect sizes in follow-up studies: ROC area, Cohen's d, and r, Law Hum. Behav., 29, pp. 615-620, (2005); Ross S.E., Guskiewicz K.M., Time to stabilization: A method for analyzing dynamic postural stability, Athl. Ther. Today, 8, pp. 37-39, (2003); Ross S.E., Guskiewicz K.M., Yu B., Single-leg jump-landing stabilization times in subjects with functionally unstable ankles, J. Athl. Train., 40, pp. 298-304, (2005); Ross S.E., Guskiewicz K.M., Gross M.T., Yu B., Balance measures for discriminating between functionally unstable and stable ankles, Med. Sci. Sports Exerc., 41, pp. 399-407, (2009); Rudolph K.S., Axe M.J., Snyder-Mackler L., Dynamic stability after ACL injury: Who can hop?, Knee Surg. Sports Traumatol. Arthrosc., 8, pp. 262-269, (2000); Swets J.A., Measuring the accuracy of diagnostic systems, Science, 240, pp. 1285-1293, (1988); Verhagen E., Van Der Beek A., Twisk J., Bouter L., Bahr R., Van Mechelen W., The effect of a proprioceptive balance board training program for the prevention of ankle sprains: A prospective controlled trial, Am. J. Sports Med., 32, pp. 1385-1393, (2004); Wikstrom E.A., Tillman M.D., Smith A.N., Borsa P.A., A new force-plate technology measure of dynamic postural stability: The dynamic postural stability index, J. Athl. Train., 40, pp. 305-309, (2005); Wikstrom E.A., Tillman M.D., Schenker S.M., Borsa P.A., Jump-landing direction influences dynamic postural stability scores, J. Med. Sci. Sport, 11, pp. 106-111, (2008); Wikstrom E.A., Tillman M.D., Chmielewski T.H., Cauraugh J.H., Naugle K.E., Borsa P.A., Self-assessed disability and functional performance in individuals with and without ankle instability: A case control study, J. Orthop. Sports Phys. Ther., 39, pp. 458-467, (2009); Wikstrom E.A., Tillman M.D., Chmielewski T.H., Cauraugh J.H., Naugle K.E., Borsa P.A., Dynamic postural control but not mechanical stability differs among those with and without chronic ankle instability, Scand. J. Med. Sci. Sports, 20, pp. 137-144, (2010); Wikstrom E.A., Tillman M.D., Chmielewski T.H., Cauraugh J.H., Naugle K.E., Borsa P.A., Discriminating between copers and those with chronic ankle instability, J. Athl. Train., 47, 2, pp. 136-142, (2012); Wright C.J., Arnold B., Ross S.E., Validation of a recalibrated cumberland ankle instability tool cutoff score for chronic ankle instability, J. Athl. Train., 46, (2011); Yeung M.S., Chan K.M., So C.H., Yuan W.Y., An epidemiological survey on ankle sprain, Br. J. Sports Med., 28, pp. 112-116, (1994)","K. Liu; 222 Graves Hall, Evansville, IN 47722, 1800 Lincoln Ave, United States; email: kl154@evansville.edu","","","18791271","","CLBIE","23186619","English","Clin. Biomech.","Article","Final","","Scopus","2-s2.0-84875751713" "Massidda M.; Corrias L.; Ibba G.; Scorcu M.; Vona G.; Calò C.M.","Massidda, M. (28267965800); Corrias, L. (36707436700); Ibba, G. (56717520200); Scorcu, M. (39661419400); Vona, G. (57193599520); Calò, C.M. (6603577716)","28267965800; 36707436700; 56717520200; 39661419400; 57193599520; 6603577716","Genetic markers and explosive leg-muscle strength in elite Italian soccer players","2012","Journal of Sports Medicine and Physical Fitness","52","3","","328","334","6","23","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84864227675&partnerID=40&md5=e7c864b3b8493df43d2e3299f7d5d63b","Department of Life and Environmental Sciences, University of Cagliari, 09042 Monserrato, Cagliari, SS 554 Km 4.500, Italy; Cagliari Calcio Spa, Cagliari, Italy; FMSI CR Sardegna, Sassari, Italy","Massidda M., Department of Life and Environmental Sciences, University of Cagliari, 09042 Monserrato, Cagliari, SS 554 Km 4.500, Italy; Corrias L., Department of Life and Environmental Sciences, University of Cagliari, 09042 Monserrato, Cagliari, SS 554 Km 4.500, Italy; Ibba G., Cagliari Calcio Spa, Cagliari, Italy; Scorcu M., Cagliari Calcio Spa, Cagliari, Italy, FMSI CR Sardegna, Sassari, Italy; Vona G., Department of Life and Environmental Sciences, University of Cagliari, 09042 Monserrato, Cagliari, SS 554 Km 4.500, Italy; Calò C.M., Department of Life and Environmental Sciences, University of Cagliari, 09042 Monserrato, Cagliari, SS 554 Km 4.500, Italy","Aim. The aim of the present paper was to investigate the relationships between polymorphisms in ACTN3, ACE and BDKRB2 genes, soccer performance, and explosive leg-muscle strength in Italian soccer players. Methods. We examined 42 top-level Italian soccer players (S) and 106 sedentary healthly Italians, as a control group (C). Χ 2 test was used to look for the difference in genotype distribution of ACTN3, ACE and BDKRB2 between groups. The data were evaluated by forward stepwise multiple regression analysis with the Squat Jump (SJ) and Counter Movement Jump (CMJ) as dependent variables, as well as competition level (CL), ACTN-3, ACE and BDKRB2 genotypes as independent variables. Results. No significant difference was found between groups for ACE, ACTN-3 and BDKRB2 genotype distributions. Forward stepwise multiple regression analysis suggests a significant relationship between a) SJ νs. CL, ACE, and ACTN-3 and b) CMJ νs. CL. For SJ, the multivariate model combining genotypic data and competition level significantly predicted explosive leg-muscle strength in soccer players and variance explained by the function was 23.92%. Conclusion. An interaction of two polymorphisms (ACE and ACTN-3) might be able to discriminate quantitative traits crucial for the elite soccer performance, however the contribution of genetic factors to soccer performance is not so high.","Genetic markers; Muscle strength; Receptor, bradykinin b2; Soccer; Sports","Actinin; Analysis of Variance; Athletic Performance; Biomechanics; Chi-Square Distribution; Exercise Test; Gene Frequency; Genetic Markers; Genotype; Humans; Italy; Male; Muscle Strength; Muscle, Skeletal; Peptidyl-Dipeptidase A; Polymorphism, Genetic; Receptor, Bradykinin B2; Regression Analysis; Soccer; Young Adult; ACE protein, human; actinin; ACTN3 protein, human; bradykinin B2 receptor; dipeptidyl carboxypeptidase; adult; analysis of variance; article; athletic performance; biomechanics; chi square distribution; exercise test; gene frequency; genetic marker; genetic polymorphism; genetics; genotype; human; Italy; male; muscle strength; physiology; regression analysis; skeletal muscle; sport","Santiago C., Ruiz J.R., Muniesa C.A., Gonzalez-Freire M., Gomez-Gallego F., Lucia A., Does the polygenic profile determine the potential for becoming a world-class athlete? 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Potential role in metabolic regulation, Diabetes, (1996); Langberg H., Bjorn C., Boushel R., Hellsten Y., Kjaer M., Exercise-induced increase in interstitial bradykinin and adenosine concentrations in skeletal muscle and peritendinous tissue in humans, Journal of Physiology, 542, 3, pp. 977-983, (2002); Vidal M.A., Astroza A., Matus C.E., Ehrenfeld P., Pavicic F., Sanchez T., Salem C., Figueroa J., Concha M., Gonzalez C.B., Figueroa C.D., Kinin B2 receptor-coupled signal transduction in human cultured keratinocytes, Journal of Investigative Dermatology, 124, 1, pp. 178-186, (2005); Wicklmayr M., Dietze G., Brunnbauer H., Dose-dependent effect of bradykinin on muscular blood flow and glucose uptake in man, Hoppe-Seyler's Zeitschrift fur Physiologische Chemie, 364, 7, pp. 831-833, (1983); Zhang X., Xie Y.-W., Nasjletti A., Xu X., Wolin M.S., Hintze T.H., ACE inhibitors promote nitric oxide accumulation to modulate myocardial oxygen consumption, Circulation, 95, 1, pp. 176-182, (1997); Braun A., Kammerer S., Maier E., Bohme E., Roscher A.A., Polymorphisms in the gene for the human B 2-bradykinin receptor. New tools in assessing a genetic risk for bradykinin-associated diseases, Immunopharmacology, 33, 1-3, pp. 32-35, (1996); Williams A.G., Dhamrait S.S., Wootton P.T.E., Day S.H., Hawe E., Payne J.R., Myerson S.G., World M., Budgett R., Humphries S.E., Montgomery H.E., Bradykinin receptor gene variant and human physical performance, Journal of Applied Physiology, 96, 3, pp. 938-942, (2004); Brull D., Dhamrait S., Myerson S., Erdmann J., Regitz-Zagrosek V., World M., Pennell D., Humphries S.E., Montgomery H., Bradykinin B2BKR receptor polymorphism and left-ventricular growth response, Lancet, 358, 9288, pp. 1155-1156, (2001); Montgomery H., Safari L., Genetic basis of physical fitness, Annual Review of Anthropology, 36, pp. 391-405, (2007); MacArthur D.G., North K.N., A gene for speed? The evolution and function of α-actinin-3, BioEssays, 26, 7, pp. 786-795, (2004); Niemi A.-K., Majamaa K., Mitochondrial DNA and ACTN3 genotypes in Finnish elite endurance and sprint athletes, European Journal of Human Genetics, 13, 8, pp. 965-969, (2005); Massidda M., Vona G., Calo C.M., Association between the ACTN3 R577X polymorphism and artistic gymnastic performance in Italy, Genet test mol biomarkers, 13, pp. 377-380, (2009); Vincent B., De Bock K., Ramaekers M., Van Den Eede E., Van Leemputte M., Hespel P., Et al., ACTN3 (R577X) genotype is associated with fiber type distribution, Physiol Genomics, 32, pp. 58-63, (2007); Eynon N., Alves A.J., Yamin C., Sagiv M., Duarte J.A., Oliveira J., Et al., Is there an ACE ID - ACTN3 R577X polymorphisms interaction that influences sprint performance?, Int J Sports Med, 30, pp. 888-91, (2009); Rodriguez-Romo G., Ruiz J.R., Santiago C., Fiuza-Luces C., Gonzalez-Freire, Gomez-Gallego M., Et al., Does the ACE I/D polymorphism, alone or in combination with the ACTN3 R577X polymorphism, influence muscle power phenotypes in young, non-athletic adults?, Eur J Appl Physiol, 110, pp. 1099-1106, (2010); Bosco C., Luhtanen P., Komi P.V., A simple method for measurement of mechanical power in jumping, European Journal of Applied Physiology and Occupational Physiology, 50, 2, pp. 273-282, (1983); Garganta J., Maia J., Silva R., Natal A., A comparative study of explosive leg strength in elite and non-elite young soccer players, J Sports Sci, 10, (1992); Tsianos G., Sanders J., Dhamrait S., Humphries S., Grant S., Montgomery H., The ACE gene insertion/deletion polymorphism and elite endurance swimming, European Journal of Applied Physiology, 92, 3, pp. 360-362, (2004); Santiago C., Gonzalez-Freire M., Serratosa L., Morate F.J., Meyer T., Gomez-Gallego F., Lucia A., ACTN3 genotype in professional soccer players, British Journal of Sports Medicine, 42, 1, pp. 71-73, (2008); Ruiz J.R., Fernandez Del Valle M., Verde Z., Diez-Vega I., Santiago C., Yvert T., Et al., ACTN3 R577X polymorphism does not influence explosive leg muscle power in elite volleyball players, Scand J Med Sci Sports, 21, (2010); Scott R.A., Irving R., Irwin L., Morrison E., Charlton V., Austin K., Et al., ACTN3 and ACE genotypes in elite Jamaican and US sprinters, Med Sci Sports Exerc, 42, pp. 107-112, (2010); Massidda M., Vona G., Calo C.M., Lack of association between ACE insertion/deletion polymorphism and elite artistic gymnastic performance in Italians, Eur J Sport Sci, 11, pp. 149-153, (2011); Myerson S., Hemingway H., Budget R., Martin J., Humphries S., Montgomery H., Human angiotensin I-converting enzyme gene and endurance performance, Journal of Applied Physiology, 87, 4, pp. 1313-1316, (1999); Hagberg J.M., Rankinen T., Loos R.J., Perusse L., Roth S.M., Wolfarth B., Et al., Advances in exercise, fitness, and performance genomics in 2010, Med Sci Sports Exerc, 43, pp. 743-752, (2011); Williams A.G., Folland J.P., Similarity of polygenic profiles limits the potential for elite human physical performance, J Physiol, 586, pp. 113-121, (2008); Ruiz J.R., Gomez-Gallego F., Santiago C., Gonzalez-Freire M., Verde Z., Foster C., Et al., Is there an optimum endurance polygenic profile?, J Physiol, 587, pp. 1527-1534, (2009)","M. Massidda; Department of Life and Environmental Sciences, University of Cagliari, 09042 Monserrato, Cagliari, SS 554 Km 4.500, Italy; email: myosotis.massidda@unica.it","","","00224707","","JMPFA","22648472","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-84864227675" "Armitage M.; Beato M.; McErlain-Naylor S.A.","Armitage, Mark (57221912872); Beato, Marco (56254437100); McErlain-Naylor, Stuart A. (57195451545)","57221912872; 56254437100; 57195451545","Inter-unit reliability of IMU Step metrics using IMeasureU Blue Trident inertial measurement units for running-based team sport tasks","2021","Journal of Sports Sciences","39","13","","1512","1518","6","17","10.1080/02640414.2021.1882726","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100549773&doi=10.1080%2f02640414.2021.1882726&partnerID=40&md5=11bd3821d5764c03e541c4c729e55244","School of Health and Sports Sciences, University of Suffolk, Ipswich, United Kingdom","Armitage M., School of Health and Sports Sciences, University of Suffolk, Ipswich, United Kingdom; Beato M., School of Health and Sports Sciences, University of Suffolk, Ipswich, United Kingdom; McErlain-Naylor S.A., School of Health and Sports Sciences, University of Suffolk, Ipswich, United Kingdom","The aim of this study was to determine the inter-unit reliability of IMU Step biomechanical load monitoring metrics using IMeasureU Blue Trident inertial measurement units in tasks common to running-based team sports. Knowledge of variability between units is required before researchers and practitioners can make informed decisions on “true” differences between limbs. Sixteen male college soccer players performed five running-based tasks, generating 224 trials and 17,012 steps. Data were analysed for each task and for the whole session, investigating six IMU Step metrics: step count; impact load; bone stimulus; and low, medium and high intensity steps. Inter-unit reliability was excellent (ICC ≥ 0.90) for 21 out of 26 metrics, and good (0.83 ≤ ICC ≤ 0.86) for all other metrics except for Yo-Yo impact load (ICC = 0.79) which was acceptable. These findings confirm the inter-unit reliability of IMU Step metrics using IMeasureU Blue Trident inertial measurement units for running-based team sports. Now that inter-unit variability has been quantified, researchers and practitioners can use this information when interpreting inter-limb differences for monitoring external biomechanical training load. © 2021 Informa UK Limited, trading as Taylor & Francis Group.","Accelerometer; bone stimulus; impact load; tibial acceleration; training load","Acceleration; Accelerometry; Adolescent; Biomechanical Phenomena; Humans; Male; Reproducibility of Results; Running; Soccer; Team Sports; Tibia; acceleration; accelerometry; adolescent; biomechanics; human; male; physiology; reproducibility; running; soccer; tibia","Ahola R., Korpelainen R., Vainionpaa A., Jamsa T., Daily impact score in long-term acceleration measurements of exercise, Journal of Biomechanics, 43, 10, pp. 1960-1964, (2010); Atkinson G., Nevill A.M., Statistical methods for assessing measurement error (reliability) in variables relevant to sports medicine, Sports Medicine (Auckland, N.Z.), 26, 4, pp. 217-238, (1998); Barrett S., Midgley A.W., Towlson C., Garrett A., Portas M., Lovell R., Within-match playerloadTM patterns during a simulated soccer match: Potential implications for unit positioning and fatigue management, International Journal of Sports Physiology and Performance, 11, 1, pp. 135-140, (2016); Beato M., De Keijzer K.L., Carty B., Connor M., Monitoring fatigue during intermittent exercise with accelerometer-derived metrics, Frontiers in Physiology, 10, JUN, (2019); Beaupre G.S., Orr T.E.&.C.D.R., An approach for time-dependent bone modeling and remodeling—application: A preliminary remodeling simulation, Journal of Orthopaedic Research, pp. 662-670, (1990); Besier T., Bone stimulus, (2019); Bishop C., Interlimb asymmetries. Are thresholds a usable concept?, Strength and Conditioning Journal, (2020); Burgess D.J., The research doesn’t always apply: Practical solutions to evidence-based training-load monitoring in elite team sports, International Journal of Sports Physiology and Performance, 12, s2, pp. 136-141, (2017); Burland J.P., Outerleys J.B., Lattermann C., Davis I.S., Reliability of wearable sensors to assess impact metrics during sport-specific tasks, Journal of Sports Sciences, (2020); Cardinale M., Varley M.C., Wearable training-monitoring technology: Applications, challenges, and opportunities, International Journal of Sports Physiology and Performance, 12, s2, pp. 55-62, (2017); Cormack S.J., Newton R.U., McGulgan M.R., Doyle T.L.A., Reliability of measures obtained during single and repeated countermovement jumps, International Journal of Sports Physiology and Performance, 3, 2, pp. 131-144, (2008); Creaby M.W., Franettovich Smith M.M., Retraining running gait to reduce tibial loads with clinician or accelerometry guided feedback, Journal of Science and Medicine in Sport, 19, 4, pp. 288-292, (2016); Crowell H.P., Davis I.S., Gait retraining to reduce lower extremity loading in runners, Clinical Biomechanics, 26, 1, pp. 78-83, (2011); Davis J.J., Gruber A.H., Quantifying exposure to running for meaningful insights into running-related injuries, BMJ Open Sport and Exercise Medicine, 5, 1, pp. 1-4, (2019); Delaney J.A., Duthie G.M., Thornton H.R., Pyne D.B., Quantifying the relationship between internal and external work in team sports: Development of a novel training efficiency index, Science and Medicine in Football, 2, 2, pp. 149-156, (2018); Delaney J.A., Wileman T.M., Perry N.J., Thornton H.R., Moresi M.P., Duthie G.M., The validity of a global navigation satellite system for quantifying small-area team-sport movements, Journal of Strength and Conditioning Research, 33, 6, pp. 1463-1466, (2019); Edwards S., White S., Humphreys S., Robergs R., O'Dwyer N., Caution using data from triaxial accelerometers housed in player tracking units during running, Journal of Sports Sciences, 37, 7, pp. 810-818, (2019); Glassbrook D.J., Fuller J.T., Alderson J.A., Doyle T.L.A., Foot accelerations are larger than tibia accelerations during sprinting when measured with inertial measurement units, Journal of Sports Sciences, 38, 3, pp. 248-255, (2020); Greig M., Emmerson H., McCreadie J., rehabilitation progression criteria using GPS: A preliminary study, Journal of Sport Rehabilitation, (2018); Harrison A.J., McErlain-Naylor S.A., Bradshaw E.J., Dai B., Nunome H., Hughes G.T.G., Kong P.W., Vanwanseele B., Vilas-Boas J.P., Fong D.T.P., Recommendations for statistical analysis involving null hypothesis significance testing, Sports Biomechanics, (2020); Hopkins W.G., Schabort E.J., Hawley J.A., Reliability of power in physical performance tests, Sports Medicine (Auckland, N.Z.), 31, 3, pp. 211-234, (2001); Hughes T., Jones R.K., Starbuck C., Sergeant J.C., Callaghan M.J., The value of tibial mounted inertial measurement units to quantify running kinetics in elite football (soccer) players. A reliability and agreement study using a research orientated and a clinically orientated system, Journal of Electromyography and Kinesiology, 44, October2018, pp. 156-164, (2019); Impellizzeri F.M., Marcora S.M., Coutts A.J., Internal and external training load: 15 years on, International Journal of Sports Physiology and Performance, 14, 2, pp. 270-273, (2019); Lucas-Cuevas A.G., Encarnacion-Martinez A., Camacho-Garcia A., Llana-Belloch S., Perez-Soriano P., The location of the tibial accelerometer does influence impact acceleration parameters during running, Journal of Sports Sciences, 35, 17, pp. 1734-1738, (2017); Luteberget L.S., Spencer M., Gilgien M., Validity of the Catapult ClearSky T6 local positioning system for team sports specific drills, in indoor conditions, Frontiers in Physiology, 9, APR, pp. 1-10, (2018); Malone J.J., Lovell R., Varley M.C., Coutts A.J., Unpacking the black box: Applications and considerations for using gps devices in sport, International Journal of Sports Physiology and Performance, 12, s2, pp. 18-26, (2017); Matijevich E.S., Branscombe L.M., Scott L.R., Zelik K.E., Ground reaction force metrics are not strongly correlated with tibial bone load when running across speeds and slopes: Implications for science, sport and wearable tech, PLoS ONE, 14, 1, pp. 1-19, (2019); Milner C.E., Ferber R., Pollard C.D., Hamill J., Davis I.S., Biomechanical factors associated with tibial stress fracture in female runners, Medicine and Science in Sports and Exercise, 38, 2, pp. 323-328, (2006); Nedergaard N.J., Robinson M.A., Eusterwiemann E., Drust B., Lisboa P.J., Vanrenterghem J., The relationship between whole-body external loading and body-worn accelerometry during team-sport movements, International Journal of Sports Physiology and Performance, 12, 1, pp. 18-26, (2017); Rice H.M., Saunders S.C., McGuire S.J., O'Leary T.J., Izard R.M., Estimates of tibial shock magnitude in men and women at the start and end of a military drill training program, Military Medicine, 183, 9-10, pp. e392-e398, (2018); Roell M., Mahler H., Lienhard J., Gehring D., Gollhofer A., Roecker K., Validation of wearable sensors during team sport-specific movements in indoor environments, Sensors (Switzerland), 19, 16, pp. 1-13, (2019); Sheerin K.R., Besier T.F., Reid D., The influence of running velocity on resultant tibial acceleration in runners, Sports Biomechanics, 19(6), (2020); Sheerin K.R., Besier T.F., Reid D., Hume P.A., The one-week and six-month reliability and variability of three-dimensional tibial acceleration in runners, Sports Biomechanics, 17, 4, pp. 1-10, (2017); Sheerin K.R., Reid D., Besier T.F., The measurement of tibial acceleration in runners—A review of the factors that can affect tibial acceleration during running and evidence-based guidelines for its use, Gait & Posture, 67, pp. 12-24, (2019); Tenforde A.S., Hayano T., Jamison S., Outerleys J., Davis I.S., Tibial acceleration measured from wearable sensors is associated with loading rates in injured runners, Pm&R, (2020); Vanrenterghem J., Nedergaard N.J., Robinson M.A., Drust B., Training load monitoring in team sports: A novel framework separating physiological and biomechanical load-adaptation pathways, Sports Medicine, 47, 11, pp. 2135-2142, (2017); Verheul J., Nedergaard N.J., Vanrenterghem J., Robinson M.A., Measuring biomechanical loads in team sports–From lab to field, Science and Medicine in Football, (2020); Veugelers K.R., Naughton G.A., Duncan C.S., Burgess D.J., Graham S.R., Validity and reliability of a submaximal intermittent running test in elite australian football players, Journal of Strength and Conditioning Research, 30, 12, pp. 3347-3353, (2016); Vigotsky A.D., Zelik K.E., Lake J., Hinrichs R.N., (2019); Willy R.W., Innovations and pitfalls in the use of wearable devices in the prevention and rehabilitation of running related injuries, Physical Therapy in Sport, 29, pp. 26-33, (2018); Young S.R., Gardiner B., Mehdizadeh A., Rubenson J., Umberger B., Smith D.W., Adaptive remodeling of achilles tendon: A multi-scale computational model, PLoS Computational Biology, 12, 9, pp. 1-30, (2016)","M. Armitage; School of Health and Sports Sciences, University of Suffolk, Ipswich, IP3 0FN, United Kingdom; email: m.armitage@uos.ac.uk","","Routledge","02640414","","JSSCE","33541230","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-85100549773" "Sporis G.; Jovanovic M.; Omrcen D.; Matkovic B.","Sporis, G. (22235390100); Jovanovic, M. (37112520700); Omrcen, D. (23036368200); Matkovic, B. (6604089574)","22235390100; 37112520700; 23036368200; 6604089574","Can the official soccer game be considered the most important contribution to player's physical fitness level?","2011","Journal of Sports Medicine and Physical Fitness","51","3","","374","380","6","21","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-82955181192&partnerID=40&md5=19bec6c5d1babfe202e8f2c016d2ad54","Faculty of Kinesiology, University of Zagreb, Croatia; Faculty of Kinesiology, 10000 Zagreb, Horvacanski zavoj 15, Croatia","Sporis G., Faculty of Kinesiology, University of Zagreb, Croatia, Faculty of Kinesiology, 10000 Zagreb, Horvacanski zavoj 15, Croatia; Jovanovic M., Faculty of Kinesiology, University of Zagreb, Croatia; Omrcen D., Faculty of Kinesiology, University of Zagreb, Croatia; Matkovic B., Faculty of Kinesiology, University of Zagreb, Croatia","Aim. During competitive soccer match play, elite players are subdued to vigorous physical and psychological strains. Thus, some changes in overall physical fitness can be expected. The objective of this paper was to determine whether official games influence physical fitness in soccer players. Methods. The participants were divided according to the number of minutes spent in the game as well as according to some additional criteria into starters (STA; N.=33, >1000 minutes spent in the official game) and non-starters (NON; N.=31, <1000 minutes spent in the official game). Both groups participated in the initial (end of pre-season) and in the final testing procedures (one week after the end of the competition period). The total of 24 variables covered players' power performance, kicking the ball, aerobic capacity, agility and flexibility. Results. The STA group showed positive significant differences (P<0.05) from the NON group in 21 out of 24 variables. The most significant findings of this study point to the fact that official games help in maintaining and improving agility parameters (6 out of 7 tests) as well as in maintaining and improving overall power performance of soccer players which includes sprinting, jumping and kicking the ball. Conclusion. Due to specific physiological and psychological factors, official matches make it possible for the starters to develop the mentioned aspects to a higher level when compared to the non-starting team colleagues.","Conditioning; Fitness; Soccer","Adolescent; Analysis of Variance; Athletic Performance; Biomechanics; Humans; Kinetics; Male; Physical Endurance; Physical Fitness; Reproducibility of Results; Soccer; Time Factors; adolescent; analysis of variance; article; athletic performance; biomechanics; endurance; fitness; human; kinetics; male; physiology; reproducibility; sport; time","Arnason A., Sigurdsson S.B., Gudmundsson A., Holme I., Engebretsen L., Bahr R., Physical fitness, injuries, and team performance in soccer, Medicine and Science in Sports and Exercise, 36, 2, pp. 278-285, (2004); Bangsbo J., Mohr M., Krustrup P., Physical and metabolic demands of training and match-play in the elite football player, Journal of Sports Sciences, 24, 7, pp. 665-674, (2006); Gravina L., Gil S.M., Ruiz F., Zubero J., Gil J., Irazusta J., Anthropometric and physiological differences between first team and reserve soccer players aged 10-14 years at the beginning and end of the season, J Strength Cond Res, 22, (2008); Heidt Jr. R.S., Sweeterman L.M., Carlonas R.L., Traub J.A., Tekulve F.X., Avoidance of soccer injuries with preseason conditioning, Am J Sports Med, 28, pp. 659-662, (2000); Hoff J., Helgerud J., Endurance and strength training for soccer players: Physiological considerations, Sports Medicine, 34, 3, pp. 165-180, (2004); Iaia F.M., Rampinini E., Bangsbo J., High-intensity training in football, Int J Sports Physiol Perform, 4, pp. 291-306, (2009); Kraemer W.J., French D.N., Paxton N.J., Hakkinen K., Volek J.S., Sebastianelli W.J., Et al., Changes in exercise performance and hormonal concentrations over a big ten soccer season in starters and nonstarters, J Strength Cond Res, 18, (2004); Krustrup P., Mohr M., Ellingsgaard H., Bangsbo J., Physical demands during an elite female soccer game: Importance of training status, Medicine and Science in Sports and Exercise, 37, 7, pp. 1242-1248, (2005); Krustrup P., Mohr M., Nybo L., Jensen J.M., Nielsen J.J., Bangsbo J., The Yo-Yo IR2 test: Physiological response, reliability, and application to elite soccer, Medicine and Science in Sports and Exercise, 38, 9, pp. 1666-1673, (2006); Sporis G., Vucetic V., Jovanovic M., Jukic I., Omrcen D., Reliability and factorial validity of flexibility tests for team sports, J Strength Cond Res, 25, pp. 1168-1176, (2011); Sporis G., Jukic I., Milanovic L., Vucetic V., Reliability and factorial validity of agility tests for soccer players, J Strength Cond Res, 24, pp. 679-686, (2010); Sporis G., Jukic I., Ostojic S.M., Milanovic D., Fitness profiling in soccer: Physical and physiologic characteristics of elite players, J Strength Cond Res, 23, pp. 1947-1953, (2009); Sutton L., Scott M., Wallace J., Reilly T., Body composition of English Premier League soccer players: Influence of playing position, international status, and ethnicity, J Sports Sci, 27, pp. 1019-1026, (2009)","G. Sporis; Faculty of Kinesiology, 10000 Zagreb, Horvacanski zavoj 15, Croatia; email: gsporis@kif.hr","","","00224707","","JMPFA","21904275","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-82955181192" "Dix C.; Arundale A.; Silvers-Granelli H.; Marmon A.; Zarzycki R.; Snyder-Mackler L.","Dix, Celeste (57203785542); Arundale, Amelia (56529660500); Silvers-Granelli, Holly (56940696700); Marmon, Adam (24830668700); Zarzycki, Ryan (57192270904); Snyder-Mackler, Lynn (7006751957)","57203785542; 56529660500; 56940696700; 24830668700; 57192270904; 7006751957","BIOMECHANICAL MEASURES DURING TWO SPORT-SPECIFIC TASKS DIFFERENTIATE BETWEEN SOCCER PLAYERS WHO GO ON TO ANTERIOR CRUCIATE LIGAMENT INJURY AND THOSE WHO DO NOT: A PROSPECTIVE COHORT ANALYSIS","2020","International Journal of Sports Physical Therapy","15","6","","928","935","7","21","10.26603/ijspt20200928","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105415091&doi=10.26603%2fijspt20200928&partnerID=40&md5=292157778fc83e799255cf12d7ca190f","Biomechanics and Movement Science, University of Delaware, Newark, DE, United States; Department of Rehabilitation and Human Performance, IcahSchool of Medicine at Mount, Sinai Health System, Manhattan, NY, United States; Research Major League Soccer Medical Assessment Research Committee (M-MARC), New York, NY, United States; Velocity Physical Therapy, Los Angeles, CA, United States; LiteCure LLC, New Castle, DE, United States; Physical Therapy, Arcadia University, Glenside, PA, United States; Physical Therapy, University of Delaware, Newark, DE, United States","Dix C., Biomechanics and Movement Science, University of Delaware, Newark, DE, United States; Arundale A., Biomechanics and Movement Science, University of Delaware, Newark, DE, United States, Department of Rehabilitation and Human Performance, IcahSchool of Medicine at Mount, Sinai Health System, Manhattan, NY, United States; Silvers-Granelli H., Biomechanics and Movement Science, University of Delaware, Newark, DE, United States, Research Major League Soccer Medical Assessment Research Committee (M-MARC), New York, NY, United States, Velocity Physical Therapy, Los Angeles, CA, United States; Marmon A., Biomechanics and Movement Science, University of Delaware, Newark, DE, United States, LiteCure LLC, New Castle, DE, United States; Zarzycki R., Biomechanics and Movement Science, University of Delaware, Newark, DE, United States, Physical Therapy, Arcadia University, Glenside, PA, United States; Snyder-Mackler L., Biomechanics and Movement Science, University of Delaware, Newark, DE, United States, Physical Therapy, University of Delaware, Newark, DE, United States","Background: Decelerating and cutting are two common movements during which non-contact anterior cruciate ligament (ACL) injuries occur in soccer players. Retrospective video analysis of ACL injuries has demonstrated that players are often in knee valgus at the time of injury. Purpose: To determine whether prospectively measured components of valgus collapse during a deceleration and 90° cut can differentiate between collegiate women’s soccer players who go on to non-contact ACL injury. Design: Secondary analysis of prospectively collected data. Methods: 51 NCAA women’s soccer players completed motion analysis of a deceleration and 90° before the competi-tive season. Players were classified as Injured (noncontact ACL injury during the season) or Uninjured at the end of the season. Differences between groups for peak hip adduction, internal rotation, and knee abduction angles, and knee valgus collapse were analyzed with a MANOVA. Results: Four non-contact ACL injuries were reported at the end of the season. There was a significant dif-ference between groups for hip adduction angle during the 90° cut (p=0.02) and deceleration (p=0.03). Players who went on to ACL injury were in more hip adduction. Conclusions: Hip adduction angle is larger in players who go on to ACL injury than those who do not during two sport-specific tasks. The components of knee injury prevention programs that address proximal control and strength are likely crucial for preventing ACL injuries. © 2020, North American Sports Medicine Institute. All rights reserved.","injury; knee; movement system; soccer; training","","Prodromos CC, Han Y, Rogowski J, Et al., A Meta-analysis of the Incidence of anterior cruciate ligament tears as a function of gender, sport, and a knee injury-reduction regimen, Arthrosc-J Arthrosc Relat Surg, 23, 12, pp. 1320-1325, (2007); Alentorn-Geli E, Myer GD, Silvers HJ, Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: Mechanisms of injury and underlying risk factors, Knee Surgery, Sport Traumatol Arthrosc, 17, 7, pp. 705-729, (2009); Hewett TE, Myer GD, Ford KR, Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Boden BP, Dean GS, Feagin JAJ, Garrett WEJ., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Walden M, Krosshaug T, Bjorneboe J, Andersen TE, Faul O, Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: a systematic video analysis of 39 cases, Br J Sports Med, 49, pp. 1452-1460, (2015); Olsen O-E, Myklebust G, Engebretsen L, Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball, Am J Sports Med, 32, 4, pp. 1002-1012, (2004); Brophy RH, Stepan JG, Silvers HJ, Mandelbaum BR., Defending puts the anterior cruciate ligament at risk during soccer: A gender-based analysis, Sports Health, 7, 3, (2015); Faude O, Junge A, Kindermann W, Dvorak J., Injuries in female soccer players: A prospective study in the German national league, Am J Sports Med, 33, 11, pp. 1694-1700, (2005); Markolf KL, Burchfield DM, Shapiro MM, Et al., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, pp. 930-935, (1995); Piasecki D.P., Spindler K.P., Warren T.A., Et al., Intraarticular injuries associated with anterior cruciate ligament tear: findings at ligament reconstruction in high school and recreational athletes, Am J Sports Med, 31, 4, pp. 601-605, (2003); Krosshaug T, Nakamae A, Boden BP, Et al., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, Am J Sports Med, 35, 3, pp. 359-367, (2007); Kristianslund E, Krosshaug T., Comparison of drop jumps and sport-specific sidestep cutting: Implications for anterior cruciate ligament injury risk screening, Am J Sports Med, 41, 3, pp. 684-688, (2013); Jones PA, Herrington LC, Munro AG, Graham-Smith P., Is there a relationship between landing, cutting, and pivoting tasks in terms of the characteristics of dynamic valgus?, Am J Sports Med, 42, 9, pp. 2095-2102, (2014); O'Connor KM, Monteiro SK, Hoelker IA., Comparison of selected lateral cutting activities used to assess ACL injury risk, J Appl Biomech, 25, 1, pp. 9-21, (2009); Havens KL, Sigward SM., Cutting mechanics: Relation to performance and anterior cruciate ligament injury risk, Med Sci Sports Exerc, 47, 4, pp. 818-824, (2015); Arundale AJH, Silvers-Granelli HJ, Marmon A, Et al., Changes in biomechanical knee injury risk factors across two collegiate soccer seasons using the 11+ prevention program, Scand J Med Sci Sports, pp. 1-12, (2018); Stearns KM, Pollard CD., Abnormal frontal plane knee mechanics during sidestep cutting in female soccer athletes after anterior cruciate ligament reconstruction and return to sport, Am J Sports Med, 41, 4, pp. 918-923, (2013); Imwalle LE, Myer GD, Ford KR, Hewett TE., Relationship between hip and knee kinematics in athletic women during cutting maneuvers: A possible link to noncontact anterior cruciate ligament injury and prevention, J Strength Cond Res, 23, 8, pp. 2223-2230, (2013); Besier TF, Lloyd DG, Cochrane JL, Ackland TR., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc, 33, 7, pp. 1168-1175, (2001); Hewett TE, Ford KR, Myer GD, Et al., Gender differences in hip adduction motion and torque during a single leg agility maneuver, J Orthop Res, 3, pp. 416-421, (2006); Pollard CD, Davis IMC, Hamill J., Influence of gender on hip and knee mechanics during a randomly cued cutting maneuver, Clin Biomech, 19, 10, pp. 1022-1031, (2004); Agel J, Arendt EA, Bershadsky B., Anterior cruciate ligament injury in National Collegiate Athletic Association basketball and soccer: A 13-year review, Am J Sports Med, 33, 4, pp. 524-530, (2005); Hewett TE, Myer GD, Ford KR., Anterior cruciate ligament injuries in female athletes: Part 1, mechanisms and risk factors, Am J Sports Med, 34, 2, pp. 299-311, (2006); Baldon RDM, Lobato DFM, Carvalho LP, Et al., Effect of functional stabilization training on lower limb biomechanics in women, Med Sci Sports Exerc, 44, 1, pp. 135-145, (2012); Sugimoto D, Myer GD, Foss KDB, Hewett TE., Specific exercise effects of preventive neuromuscular training intervention on anterior cruciate ligament injury risk reduction in young females: Meta-analysis and subgroup analysis, Br J Sports Med, 49, 5, pp. 282-289, (2015); Hewett TE, Ford KR, Myer GD., Anterior cruciate ligament injuries in female athletes: Part 2, a meta-analysis of neuromuscular interventions aimed at injury prevention, Am J Sports Med, 34, 3, pp. 490-498, (2006); Arundale AJH, Bizzini M, Giordano A, Et al., Exercise-based knee and anterior cruciate ligament injury prevention, J Orthop Sports Phys Ther, 48, 9, pp. A1-A42, (2018); Jacobs CA, Uhl TL, Mattacola CG, Et al., Hip abductor function and lower extremity landing kinematics: Sex differences, J Athl Train, 42, 1, pp. 76-83, (2007); Pollard CD, Sigward SM, Ota S, Et al., The influence of in-season injury prevention training on lower-extremity kinematics during landing in female soccer players, Clin J Sport Med, 16, 3, pp. 223-227, (2006); Myer GD, Ford KR, Palumbo JP, Hewett TE., Neuromuscular training improves performance and lower-extremity biomechanics in female athletes, J Strength Cond Res, 19, 1, pp. 51-60, (2005); Krosshaug T, Steffen K, Kristianslund E, Et al., The vertical drop jump is a poor screening test for ACL injuries in female elite soccer and handball players, Am J Sports Med, 44, 4, pp. 874-883, (2015); Besier TF, Lloyd DG, Ackland TR, Cochrane JL., Anticipatory effects on knee joint loading during running and cutting maneuvers, Med Sci Sports Exerc, 33, 7, pp. 1176-1181, (2001); Neptune RR, Wright IC, Van Den Bogert AJ., Muscle coordination and function during cutting movements, Med Sci Sports Exerc, 31, 2, pp. 294-302, (1999)","C. Dix; Newark, 540 S. College Ave, Suite 210Z, 19713, United States; email: cdix@udel.edu","","North American Sports Medicine Institute","21592896","","","","English","Int. J. Sport. Phys. Ther.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85105415091" "Avedesian J.M.; Covassin T.; Baez S.; Nash J.; Nagelhout E.; Dufek J.S.","Avedesian, Jason M. (57203532730); Covassin, Tracey (57203260134); Baez, Shelby (57195629489); Nash, Jennifer (57230929500); Nagelhout, Ed (25723527200); Dufek, Janet S. (16149974600)","57203532730; 57203260134; 57195629489; 57230929500; 25723527200; 16149974600","Relationship Between Cognitive Performance and Lower Extremity Biomechanics: Implications for Sports-Related Concussion","2021","Orthopaedic Journal of Sports Medicine","9","8","","","","","18","10.1177/23259671211032246","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85113360271&doi=10.1177%2f23259671211032246&partnerID=40&md5=7fca2ed9dc92a40d147ca2ecf08d298c","Emory Sports Performance and Research Center, Flowery Branch, GA, United States; Department of Kinesiology and Nutrition Sciences, University of Nevada–Las Vegas, Las Vegas, NV, United States; Department of Kinesiology, Michigan State University, East Lansing, MI, United States; Department of Physical Therapy, University of Nevada–Las Vegas, Las Vegas, NV, United States; Department of English, University of Nevada–Las Vegas, Las Vegas, NV, United States","Avedesian J.M., Emory Sports Performance and Research Center, Flowery Branch, GA, United States, Department of Kinesiology and Nutrition Sciences, University of Nevada–Las Vegas, Las Vegas, NV, United States; Covassin T., Department of Kinesiology, Michigan State University, East Lansing, MI, United States; Baez S., Department of Kinesiology, Michigan State University, East Lansing, MI, United States; Nash J., Department of Physical Therapy, University of Nevada–Las Vegas, Las Vegas, NV, United States; Nagelhout E., Department of English, University of Nevada–Las Vegas, Las Vegas, NV, United States; Dufek J.S., Department of Kinesiology, Michigan State University, East Lansing, MI, United States","Background: Collegiate athletes with prior sports-related concussion (SRC) are at increased risk for lower extremity (LE) injuries; however, the biomechanical and cognitive mechanisms underlying the SRC-LE injury relationship are not well understood. Purpose: To examine the association between cognitive performance and LE land-and-cut biomechanics among collegiate athletes with and without a history of SRC and to determine the association among multiple cognitive testing batteries in the same athlete cohort. Study Design: Controlled laboratory study. Methods: A cohort of 20 collegiate athletes with prior SRC (9 men, 11 women; mean ± standard deviation [SD] age, 20.5 ± 1.3 years; mean ± SD time since last SRC, 461 ± 263 days) and 20 matched controls (9 men, 11 women; mean ± SD age, 19.8 ± 1.3 years) completed land-and-cut tasks using the dominant and nondominant limbs. LE biomechanical variables and a functional visuomotor reaction time (FVMRT) were collected during each trial. Athletes also completed the Immediate Post-Concussion Assessment and Cognitive Test (ImPACT) and Senaptec Sensory Station assessments. Results: In the SRC cohort, Pearson correlation coefficients indicated slower FVMRT was moderately correlated with decreased dominant limb (r = –0.512) and nondominant limb (r = –0.500) knee flexion, while increased dominant limb knee abduction moment was moderately correlated with decreased ImPACT Visual Memory score (r = –0.539) and slower ImPACT Reaction Time (r = 0.515). Most computerized cognitive measures were not associated with FVMRT in either cohort (P >.05). Conclusion: Decreased reaction time and working memory performance were moderately correlated with decreased sagittal plane knee motion and increased frontal plane knee loading in collegiate athletes with a history of SRC. The present findings suggest a potential unique relationship between cognitive performance and LE neuromuscular control in athletes with a history of SRC injury. Last, we determined that computerized measures of cognitive performance often utilized for SRC management are dissimilar to sport-specific cognitive processes. Clinical Relevance: Understanding the relationship between cognitive performance and LE biomechanics in athletes with prior SRC may inform future clinical management strategies. Future research should prospectively assess cognitive and biomechanical measures, along with LE injury incidence, to identify mechanisms underlying the SRC-LE injury relationship. © The Author(s) 2021.","multiple object tracking; musculoskeletal injury; reaction time; visual memory","abduction; adult; amnesia; anthropometry; Article; attention; balance disorder; biomechanics; cognition; cognitive function test; cohort analysis; concussion; confusion; controlled study; disorientation; diving; dizziness; eye hand coordination; female; football; functional visuomotor reaction time; headache; hockey; human; human experiment; immediate post concussion assessment and cognitive test; knee function; lower limb; male; mental performance; multiple object tracking; musculoskeletal injury; nausea; processing speed; questionnaire; reaction time; rowing; senaptec sensory station assessment; sensorimotor function; soccer; sport related concussion; student athlete; unconsciousness; verbal memory; visual memory; visual motor speed; visual stimulation; volleyball; working memory; young adult","Avedesian J.M., Covassin T., Dufek J.S., Landing biomechanics in adolescent athletes with and without a history of sports-related concussion, J Appl Biomech, 36, 5, pp. 313-318, (2020); Avedesian J.M., Covassin T., Dufek J.S., The influence of sport-related concussion on lower extremity injury risk: a review of current return-to-play practices and clinical implications, Int J Exerc Sci, 13, 3, pp. 873-889, (2020); Broglio S.P., Macciocchi S.N., Ferrara M.S., Neurocognitive performance of concussed athletes when symptom free, J Athl Train, 42, 4, pp. 504-508, (2007); Brooks M.A., Peterson K., Biese K., Sanfilippo J., Heiderscheit B.C., Bell D.R., Concussion increases odds of sustaining a lower extremity musculoskeletal injury after return to play among collegiate athletes, Am J Sports Med, 44, 3, pp. 742-747, (2016); Buckley T.A., Howard C.M., Oldham J.R., Lynall R.C., Swanik C.B., Getchell N., No clinical predictors of postconcussion musculoskeletal injury in college athletes, Med Sci Sports Exerc, 52, 6, pp. 1256-1262, (2020); Burris K., Vittetoe K., Ramger B., Et al., Sensorimotor abilities predict on-field performance in professional baseball, Sci Rep, 8, 1, (2018); Covassin T., Elbin R.J., Nakayama Y., Tracking neurocognitive performance following concussion in high school athletes, Phys Sportsmed, 38, 4, pp. 87-93, (2010); Covassin T., Elbin R.J., Stiller-Ostrowski J.L., Kontos A.P., Immediate Post-concussion Assessment and Cognitive Testing (ImPACT) practices of sports medicine professionals, J Athl Train, 44, 6, pp. 639-644, (2009); Covassin T., Moran R., Elbin R.J., Sex differences in reported concussion injury rates and time loss from participation: an update of the National Collegiate Athletic Association Injury Surveillance Program from 2004–2005 through 2008–2009, J Athl Train, 51, 3, pp. 189-194, (2016); Dubose D.F., Herman D.C., Jones D.L., Et al., Lower extremity stiffness changes after concussion in collegiate football players, Med Sci Sports Exerc, 49, 1, pp. 167-172, (2017); Elbin R.J., Schatz P., Covassin T., One-year test-retest reliability of the online version of ImPACT in high school athletes, Am J Sports Med, 39, 11, pp. 2319-2324, (2011); 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Shimokochi Y., Yong Lee S., Shultz S.J., Schmitz R.J., The relationships among sagittal-plane lower extremity moments: implications for landing strategy in anterior cruciate ligament injury prevention, J Athl Train, 44, 1, pp. 33-38, (2009); Swanik C., Brains and sprains: the brain’s role in noncontact anterior cruciate ligament injuries, J Athl Train, 50, 10, pp. 1100-1102, (2015); Swanik C., Covassin T., Stearne D.J., Schatz P., The relationship between neurocognitive function and noncontact anterior cruciate ligament injuries, Am J Sports Med, 35, 6, pp. 943-948, (2007); Wilkerson G.B., Neurocognitive reaction time predicts lower extremity sprains and strains, Int J Athl Ther Train, 17, 6, pp. 4-9, (2012); Wilkerson G.B., Simpson K.A., Clark R.A., Assessment and training of visuomotor reaction time for football injury prevention, J Sport Rehabil, 26, 1, pp. 26-34, (2017); Zuckerman S.L., Kerr Z.Y., Yengo-Kahn A., Wasserman E., Covassin T., Solomon G.S., Epidemiology of sports-related concussion in NCAA athletes from 2009-2010 to 2013-2014: incidence, recurrence, and mechanisms, Am J Sports Med, 43, 11, pp. 2654-2662, (2015)","J.M. Avedesian; Emory Sports Performance and Research Center, Flowery Branch, United States; email: jason.avedesian@emory.edu","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85113360271" "Smith P.D.; Hanlon M.P.","Smith, Paul D. (57201271866); Hanlon, Michael P. (14822088600)","57201271866; 14822088600","Assessing the effectiveness of the functional movement screen in predicting noncontact injury rates in soccer players","2017","Journal of Strength and Conditioning Research","31","12","","3327","3332","5","24","10.1519/JSC.0000000000001757","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044141896&doi=10.1519%2fJSC.0000000000001757&partnerID=40&md5=3bf7b8fe3eed6e9d1809f7c6641d4143","Department of Health, Sport and Exercise Science, Waterford Institute of Technology, Waterford, Ireland","Smith P.D., Department of Health, Sport and Exercise Science, Waterford Institute of Technology, Waterford, Ireland; Hanlon M.P., Department of Health, Sport and Exercise Science, Waterford Institute of Technology, Waterford, Ireland","Smith, PD, and Hanlon, D. Assessing the effectiveness of the functional movement screen in predicting noncontact injury rates in soccer players. J Strength Cond Res 31(12): 3327–3332, 2017—This study assessed if the Functional Movement Screen (FMS) can accurately predict noncontact injury in adult soccer players when normalizing noncontact injury occurrence against match exposure levels. Senior male players (n = 89) from 5 League of Ireland semiprofessional clubs participated in the study (mean age = 23.2 6 4.4 years; mean height = 179.5 6 6.6 cm; mean body mass = 77.5 6 7.8 kg). Participants performed the FMS during preseason, and their injury occurrence rates and match minutes were tracked throughout 1 season. In total, 66 noncontact injuries were recorded. No significant difference was found in FMS composite scores between players receiving noncontact injuries and players not suffering a noncontact injury (p = 0.96). There was no significant difference in exposure-normalized noncontact injury incidence between those scoring 14 or below and those scoring above 14 on the FMS (0.36 vs. 0.29 non-contact injuries per player per 1,000 match minutes). Players scoring 14 or below on the FMS had an odds ratio of 0.63 (p = 0.45; 95% CI = 0.19–2.07) of receiving a noncontact injury. Despite previous research showing links between low FMS composite scores and subsequent injury, these results suggest that the FMS cannot accurately predict a male soccer player’s likelihood of receiving a noncontact injury and that a lower FMS composite score does not significantly increase their noncontact injury incidence rate per 1,000 match minutes. Caution should therefore be used when using the FMS as a predictor of noncontact injury, and pain prevalence during the FMS, previous injuries, and training/match exposure levels should also be taken into account. © 2016 National Strength and Conditioning Association.","Biomechanics; Injury prediction; Injury risk factors; Movement screening; Soccer injuries","Adolescent; Adult; Athletic Injuries; Humans; Incidence; Ireland; Male; Movement; Predictive Value of Tests; Soccer; Young Adult; adolescent; adult; human; incidence; injuries; Ireland; male; movement (physiology); predictive value; soccer; sport injury; young adult","Appel B.M., Appel B., The capability of the functional movement screen to predict injury in division i male and female track and field athletes, All Graduate Plan B and Other Reports, (2012); Bardenett S.M., Micca J.J., DeNoyelles J.T., Miller S.D., Jenk D.T., Brooks G.S., Functional movement screen normative values and validity in high school athletes: Can the FMS be used as a predictor of injury?, Int J Sports Phys Ther, 10, pp. 303-308, (2015); Bushman T.T., Grier T.L., Canham-Chervak M.C., Anderson M.K., North W.J., Jones B.H., Pain on functional movement screen tests and injury risk, Am J Sports Med, 44, pp. 297-304, (2015); Chorba R.S., Chorba D.J., Bouillon L.E., Overmyer C.A., Landis J.A., Use of a functional movement screening tool to determine injury risk in female collegiate athletes, North Am J Sports Phys Ther, 5, pp. 47-54, (2010); Cook G., Burton L., Hoogenboom B., Pre-participation screening: The use of fundamental movements as an assessment of function—Part 1, North Am J Sports Phys Ther, 1, pp. 62-72, (2006); Cook G., Burton L., Hoogenboom B., Pre-participation screening: The use of fundamental movements as an assessment of function—Part 2, North Am J Sports Phys Ther, 1, pp. 132-139, (2006); Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football—the UEFA injury study, Br J Sports Med, 45, pp. 553-558, (2009); Faude O., Junge A., Kindermann W., Dvorak J., Risk factors for injuries in elite female soccer players, Br J Sports Med, 40, pp. 785-790, (2006); Fuller C.W., Ekstrand J., Junge A., Andersen T.E., Bahr R., Dvorak J., Meeuwisse W.H., Consensus statement on injury definitions and data collection procedures in studies of football (soccer) injuries, Br J Sports Med, 40, pp. 193-201, (2006); Garrison M., Westrick R., Johnson M.R., Benenson J., Association between the functional movement screen and injury development in college athletes, Int J Sports Phys Ther, 10, pp. 21-28, (2015); Gulgin H., Hoogenboom B., The functional movement screening (FMS): An inter-rater reliability study between raters of varied experience, Int J Sports Phys Ther, 9, pp. 14-20, (2015); Hagglund M., Walden M., Bahr R., Ekstrand J., Methods for epidemiological study of injuries to professional football players: Developing the UEFA model, Br J Sports Med, 39, pp. 340-346, (2005); Hagglund M., Walden M., Ekstrand J., Risk factors for lower extremity muscle injury in professional soccer: The UEFA injury study, Am J Sports Med, 41, pp. 327-335, (2013); Kiesel K., Plisky P.J., Voight M.L., Can serious injury in professional football be predicted by a preseason functional movement screen?, North Am J Sports Phys Ther, 2, pp. 147-158, (2007); Letafatkar A., Hadadnezhad M., Shojaedin S., Relationship between functional movement screening score and history of injury, Int J Sports Phys Ther, 9, pp. 21-28, (2014); O'Connor F.G., Deuster P.A., Davis J., Pappas C.G., Knapik J.J., Functional movement screening: Predicting injuries in officer candidates, Med Sci Sports Exerc, 43, pp. 2224-2230, (2011); Page R.M., Marrin K., Brogden C.M., Greig M., Biomechanical and physiological response to a contemporary soccer match-play situation, J Strength Cond Res, 29, pp. 2860-2866, (2015); Peate W.F., Bates G., Lunda K., Francis S., Bellamy K., Core strength: A new model for injury prediction and prevention, J Occup Med Toxicol, 2, (2007); Rusling C., Edwards K., Bhattacharya A., Reed A., Irwin S., Boles A., Hodgson L., The functional movement screening tool does not predict injury in football, Prog Orthop Sci, 1, (2015)","P.D. Smith; Department of Health, Sport and Exercise Science, Waterford Institute of Technology, Waterford, Ireland; email: paul.3.smith@gsk.com","","NSCA National Strength and Conditioning Association","10648011","","","27984438","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-85044141896" "Śliwowski R.; Grygorowicz M.; Wieczorek A.; Jadczak Ł.","Śliwowski, Robert (37125271100); Grygorowicz, Monika (6503988174); Wieczorek, Andrzej (36142464900); Jadczak, Łukasz (55202301900)","37125271100; 6503988174; 36142464900; 55202301900","The relationship between jumping performance, isokinetic strength and dynamic postural control in elite youth soccer players","2018","Journal of Sports Medicine and Physical Fitness","58","9","","1226","1233","7","21","10.23736/S0022-4707.17.07289-9","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85051113106&doi=10.23736%2fS0022-4707.17.07289-9&partnerID=40&md5=52bd1f8d96236f5305946a0f76723c36","Department of Team Sports Games of the University, School of Physical Education in Poznań, 27/39 Krolowej Jadwigi St., Poznan, 61-871, Poland; Rehasport Clinic FIFA, Medical Centre of Excellence, Research and Development Department, Poznań, Poland; Department of Physiotherapy of the Stanisław Staszic, University of Applied Sciences in Piła, Piła, Poland","Śliwowski R., Department of Team Sports Games of the University, School of Physical Education in Poznań, 27/39 Krolowej Jadwigi St., Poznan, 61-871, Poland; Grygorowicz M., Rehasport Clinic FIFA, Medical Centre of Excellence, Research and Development Department, Poznań, Poland, Department of Physiotherapy of the Stanisław Staszic, University of Applied Sciences in Piła, Piła, Poland; Wieczorek A., Department of Team Sports Games of the University, School of Physical Education in Poznań, 27/39 Krolowej Jadwigi St., Poznan, 61-871, Poland; Jadczak Ł., Department of Team Sports Games of the University, School of Physical Education in Poznań, 27/39 Krolowej Jadwigi St., Poznan, 61-871, Poland","BACKGROUND: The aim of this study was to investigate the relationship between vertical jumping performance, isokinetic strength of knee extensors/flexors, and postural priority and to describe a multiple regression model that accounts for the effects of selected parameters of isokinetic strength and postural priority on vertical jumping performance. METHODS: Thirty-one professional male soccer players, aged from 17 to 20 years, participated in this study (age, mean±SD: 18.6±1.26 years; height: 1.78±0.74 m and weight: 73.1±6.77 kg). The correlations between isokinetic knee strength, jumping performance, and postural control were evaluated using the Pearson correlation coefficient. A linear regression model was used to evaluate the effect of hamstrings and quadriceps peak torque of both legs at 60°·s-1, total work of both legs at 240°·s-1, and postural priority on jumping performance. RESULTS: The peak torque of right leg knee flexor (quadriceps) muscles, evaluated at 60°·s-1 speed, showed correlations with counter movement jump, 30 second jumping and squat jump (P=0.005, P=0.003, and P=0.007, respectively). We also observed a strong relationship between counter movement jump and 30 second jumping and peak torque of left leg evaluated at the same speed of 60°·s-1 (P=0.26 and P=0.22, respectively). No significant correlations were found between any of the jumping tests and peak torque of knee extensors of both legs at 60°·s-1. For the 30 second jumping test, it appears that jumping endurance has a significant relationship with total work of knee flexors for right and left legs at 240°·s-1. CONCLUSIONS: The results of this study demonstrate practical implications for soccer performance, but further exploration is required. © 2017 EDIZIONI MINERVA MEDICA.","Exercise; Muscle strength; Postural balance","Adolescent; Athletes; Biomechanical Phenomena; Humans; Knee; Knee Joint; Lower Extremity; Male; Muscle Contraction; Muscle Strength; Muscle, Skeletal; Postural Balance; Soccer; Torque; Young Adult; adolescent; adult; article; body equilibrium; controlled study; correlation coefficient; endurance; exercise; hamstring muscle; height; human; jumping; juvenile; knee; linear regression analysis; male; multiple regression; muscle strength; quadriceps femoris muscle; soccer player; torque; young adult; athlete; biomechanics; body equilibrium; lower limb; muscle contraction; muscle strength; physiology; skeletal muscle; soccer","Lehnert M., Svoboda Z., Cuberek R., The correlation between isokinetic strength of knee extensors and vertical jump performance In adolescent soccer players in an annual training cycle, Acta Univ Palacki Olomuc Gymn, 43, pp. 7-15, (2013); Reilly T., Bangsbo J., Franks A., Anthropometric and physiological predispositions for elite soccer, J Sports Sci, 18, pp. 669-683, (2000); Requena B., Gonzales-Badillo J.J., Saez De Villareal E., Ereline J., Garcia I., Gapeyeva H., Et al., Functional performance, maximal strength and power characteristics in isometric and dynamic action of Lower extremities in soccer players, J Strength Cond Res, 23, pp. 1391-1401, (2009); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer. An update, Sports Med, 35, pp. 501-536, (2005); Zabka F.F., Valente H.G., Pacheco A.M., Isokinetic evaluation of knee extensor and flexor muscles in professional soccer players, Rev Bras Med Esporte, 17, pp. 189-192, (2011); Kotzamanidis C., Chatzopoulos D., Michailidis C., Papaiakovou G., Patikas D., The effect of a combined high-intensity strength and speed training program on the running and jumping ability of soccer players, J Strength Cond Res, 19, pp. 369-375, (2005); Cometti G., Maffiuletti N.A., Pousson M., Chatard J.C., Maffulli N., Isokinetic strength and anaerobic power of elite, subelite and amateur French soccer players, Int J Sports Med, 22, pp. 45-51, (2001); Papaevangelou E., Metaxas T., Riganas C., Mandroukas A., Vamvakoudis E., Evaluation of soccer performance in professional, semiprofessional and amateur players of the same club, J Phys Educ Sport, 12, pp. 362-370, (2012); Tsiokanos A., Kellis E., Jamurtas A., Kellis S., The relationship between jumping performance and isokinetic strength of hip and knee extensors and ankle plantar flexors, Isokinet Exerc Sci, 10, pp. 107-115, (2002); Twist C., Gleeson N., Eston R., The effects of plyometric exercise on unilateral balance performance, J Sports Sci, 26, pp. 1073-1080, (2008); Reimann B.L., Guskiewicz K.M., Contribution of the peripheral somatosensory system to balance and postural equilibrium, Proprioception and Neuromuscular Control in Joint Stability, pp. 37-52, (2000); Vuillerme N., Nougier V., Teasdale N., Effects of lower limbs muscular fatigue on anticipatory postural adjustments during arm motions in humans, J Sports Med Phys Fitness, 42, pp. 289-294, (2002); Leavey V., Sandrey M., Dahmer G., Comparative effects of 6-week balance, gluteus medius strength, and combined programs on dynamic postural control, J Sport Rehabil, 19, pp. 268-287, (2010); Gear W.S., Effect of different levels of localized muscle fatigue on knee position sense, J Sports Sci Med, 10, pp. 725-730, (2011); Soligard T., Myklebust G., Steffen K., Holme I., Silvers H., Comprehensive warm-up programme to prevent injuries in young female footballers: Cluster randomized controlled trial, Brit Med J, 337, pp. 1-9, (2008); McLeod T., Armstrong T., Miller M., Sauers J.L., Balance improvements in female high school basketball players after a 6-week neuromusculartraining program, J Sport Rehabil, 18, pp. 465-481, (2009); Zajac F., Understanding muscle coordination of the human leg with dynamical simulations, J Biomech, 35, pp. 1011-1018, (2002); Landolsi M., Bouhlel E., Zarrouk F., Lacouture P., Tabka Z., The relationships between leg peak power and shot-put performance in national-level athletes, Isokinet Exerc Sci, 22, pp. 55-61, (2014); Jenkins N.D.M., Hawkey M.J., Costa P.B., Fiddler R.E., Thompson B.J., Ryan E.D., Et al., Functional hamstrings: Quadriceps ratios in elite women's soccer players, J Sports Sci, 31, pp. 612-617, (2013); Wiernicka M., Kaczmarek D., Kaminska E., Ciechanowicz-Kowalczyk I., Cywinska-Wasilewska G., Lanczak-Trzaskowska M., Et al., Postural control in scoliotic children with different functional efficiency of feet. Preliminary report, Fizjoterapia Polska, 3, pp. 299-309, (2008); Riva D., Bianchi R., Rocca F., Mamo C., Proprioceptive training and injury prevention in a professional men's basketball team: A six-year prospective study, J Strength Cond Res, 30, pp. 461-475, (2016); Cisowski P., Piontek T., Ciemniewska-Gorzela K., Grygorowicz M., Assessment of postural strategies and subjective sensations of patients with lateral ankle instability after rehabilitation, Issue Rehabil Orthop Neurophysiol Sport Promot, 13, pp. 49-68, (2015); Piontek T., Ciemieniewska-Gorzela K., Szulc A., Dudzinski W., Strategy of visual prioprioceptive control in patients with injury to the anterior cruciate ligament of the knee and healthy individuals (soccer players), Biol Sport, 29, pp. 57-62, (2012); Wisloff U., Castagna C., Helgerud J., Jones R., Hoff J., Strong correlation of maximal squat strength with sprint performance and vertical jump height in elite soccer players, Br J Sports Med, 38, pp. 285-288, (2004); Chelly M.S., Fathloun M., Cherif N., Ben Amar M., Tabka Z., Van Praagh E., Effects of aback squaw training program on leg Power, jump, and sprint performances In junior soccer players, J Strength Cond Res, 23, pp. 2241-2249, (2009); Arnason A., Sigurdsson S.B., Gudmundsson A., Holme I., Engebretsen L., Bahr R., Physical fitness, injuries, and team performance in soccer, Med Sci Sports Exerc, 36, pp. 278-285, (2004); McMillan K., Helgerud J., Macdonald R., Hoff J., Physiological adaptation to soccer specific endurance training in Professional youth soccer players, Br J Sports Med, 39, pp. 273-277, (2005); Gil S.M., Gil J., Ruiz F., Irazusta A., Irazusta J., Physiological and anthropometric characteristics of young soccer players according to their playing position: Relevance for the selection process, J Strength Cond Res, 21, pp. 438-445, (2007); Paasuke M., Ereline J., Gapeyeva H., Knee extension strength and vertical jumping performance in Nordic combined athletes, J Sports Med Phys Fitness, 41, pp. 354-361, (2001); Dauty M., Bryand F., Potiron-Josse M., Relation entre la force isocinetique, le saut et le sprint chez le footballeur de haut niveau, Sci Sports, 17, pp. 122-127, (2002); Hoffman J., Physiological Aspects of Sports Training and Performance, (2002); Bressel E., Yonker J.C., Kras J., Comparison of static and dynamic balance in female collegiate soccer, basketball, and gymnastics athletes, J Athl Train, 42, pp. 42-46, (2007); Paillard T., Noe F., Riviere T., Postural performance and strategy in the unipedal stance of soccer players at different levels of competition, J Athl Train, 41, pp. 172-176, (2006); Ming Fong S.S., Wai Nam Tsang W., Yin Fat Ng G., Lower limb joint sense, muscle strength and postural stability in adolescent Taekwondo practitioners, Int SportMed J, 14, pp. 44-52, (2013)","R. Śliwowski; Department of Team Sports Games of the University, School of Physical Education in Poznań, Poznan, 27/39 Krolowej Jadwigi St., 61-871, Poland; email: robertsliwowski@wp.pl","","Edizioni Minerva Medica","00224707","","JMPFA","28639440","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-85051113106" "Mohammad W.S.; Abdelraouf O.R.; Elhafez S.M.; Abdel-Aziem A.A.; Nassif N.S.","Mohammad, Walaa Sayed (55750397300); Abdelraouf, Osama Ragaa (56019515400); Elhafez, Salam Mohamed (25723207500); Abdel-Aziem, Amr Almaz (53881053500); Nassif, Nagui Sobhi (56020869100)","55750397300; 56019515400; 25723207500; 53881053500; 56020869100","Isokinetic imbalance of hip muscles in soccer players with osteitis pubis","2014","Journal of Sports Sciences","32","10","","934","939","5","20","10.1080/02640414.2013.868918","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896489872&doi=10.1080%2f02640414.2013.868918&partnerID=40&md5=8487158c4d527fad573064a63724a485","Department of Biomechanics, Cairo University, Giza, Egypt","Mohammad W.S., Department of Biomechanics, Cairo University, Giza, Egypt; Abdelraouf O.R., Department of Biomechanics, Cairo University, Giza, Egypt; Elhafez S.M., Department of Biomechanics, Cairo University, Giza, Egypt; Abdel-Aziem A.A., Department of Biomechanics, Cairo University, Giza, Egypt; Nassif N.S., Department of Biomechanics, Cairo University, Giza, Egypt","In this study, we compared the isokinetic torques of hip flexors/extensors and abductors/adductors in soccer players suffering from osteitis pubis (OP), with normal soccer players. Twenty soccer male athletes with OP and 20 normal soccer athletes were included in this study. Peak torque/body weight (PT/BW) was recorded from hip flexor/extensor and abductor/adductor muscles during isokinetic concentric contraction modes at angular velocity of 2.1 rad · s-1, for both groups. The results showed a significant difference between the normal and OP groups for hip flexors (P < 0.05). The normal group had significant, lower PT/BW value than the OP group for their hip flexors (P < 0.05). The hip flexor/extensor PT ratio of OP affected and non-affected limbs was significantly different from that of normal dominant and non-dominant limbs. There were no significant differences between the normal and OP groups for hip extensor, adductor and abductor muscles (P > 0.05). Regarding the hip adductor/abductor PT ratio, there was no significant difference between the normal and OP groups of athletes (P > 0.05). The OP group displayed increase in hip flexor strength that disturbed the hip flexor/extensor torque ratio of OP. Therefore, increasing the hip extensor strength should be part of rehabilitation programmes of patients with OP. © 2014 Taylor & Francis.","hip muscles; isokinetic; Osteitis pubis","Adult; Biomechanical Phenomena; Hip; Humans; Male; Muscle Strength; Muscle, Skeletal; Osteitis; Pelvic Bones; Soccer; Torque; Young Adult; adult; article; biomechanics; hip; human; male; muscle strength; osteitis; pathophysiology; pelvic girdle; physiology; skeletal muscle; soccer; torque; young adult","Arnason A., Sigurdsson S.B., Gudmundsson A., Holme I., Engebretsen L., Bahr R., Risk factors for injuries in football, American Journal of Sports Medicine, 32, (2004); Bradshaw C., Holmich P., Longstanding groin pain, Clinical sports medicine, pp. 405-425, (2007); Brown L.E., Whitehurst M., Load range, Isokinetics in human performance, pp. 97-121, (2000); Calmels P.M., Nellen M., van der Borne I., Jourdin P., Minaire P., Concentric and eccentric isokinetic assessment of flexor-extensor torque ratios at the hip, knee, and ankle in a sample population of healthy subjects, Archives Physical Medicine and Rehabilitation, 78, 11, pp. 1224-1230, (1997); Cunningham P.M., Brennan D., O'Connell M., MacMahon P., O'Neill P., Eustace S., Patterns of bone and soft-tissue injury at the symphysis pubis in soccer players: Observations at MRI, American Journal of Roentgenology, 188, 3, pp. 291-296, (2007); Delahaye H., Laffargue P., Voisin P., Weissland T., Letombe A., Dupont L., Evaluation of athletes with long standing groin pain, Isokinetics and Exercise Science, 11, 1, pp. 45-47, (2003); Drouin J.M., Valovich T.C., Shultz S.J., Gansneder B.M., Perrin D.H., Reliability and validity of the Biodex system 3 pro isokinetic dynamometer velocity, torque and position measurements, European Journal of Applied Physiolology, 91, 1, pp. 22-29, (2004); Ekstrand J., Ringborg S., Surgery versus conservative treatment in soccer players with chronic groin pain: A prospective randomised study in soccer players, European Journal of Sports and Traumatology Related Research, 23, pp. 141-145, (2001); Fricker P.A., Osteitis pubis, Sports Medicine and Arthroscopy Review, 5, pp. 305-312, (1997); Fricker P.A., Taunton J.E., Ammann W., Osteitis pubis in athletes: Infection, inflammation or injury?, Sports Medicine, 12, 4, pp. 266-279, (1991); Hiti C.J., Stevens K.J., Jamati M.K., Garza D., Matheson G.O., Athletic osteitis pubis, Sports Medicine, 41, 5, pp. 361-376, (2011); Holmich P., Uhrskou P., Ulnits L., Kanstrup I., Nielsen M.B., Bjerg A.M., Krogsgaard K., Effectiveness of active physical training as treatment for long-standing adductor-related groin pain in athletes: Randomised trial, Lancet, 353, 9151, pp. 439-443, (1999); Holt M.A., Keene J.S., Graf B.K., Helwig D.C., Treatment of osteitis pubis in athletes. Results of corticosteroid injections, American Journal of Sports Medicine, 23, pp. 601-606, (1995); Kachingwe A., Grech S., Proposed algorithm for the management of athletes with athletic pubalgia: A case series, Journal of Orthopedic and Sports Physical Therapy, 38, 12, pp. 768-780, (2008); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Sciences and Medicine, 6, 2, pp. 154-165, (2007); Khan W., Zoga A.C., Meyers W.C., Magnetic resonance imaging of athletic pubalgia and the sports hernia: Current understanding and practice, Magnetic Resonanace Imaging Clinical of North America, 21, 1, pp. 97-110, (2013); Lynch S.A., Renstrom P.A., Groin injuries in sport: Treatment strategies, Sports Medicine, 28, 2, pp. 137-144, (1999); Masuda K., Kikuhara N., Demura S., Katsuta S., Yamanaka K., Relationship between muscle strength in various isokinetic movements and kick performance among soccer players, Journal of Sports Medicine and Physical Fitness, 45, 1, pp. 44-52, (2005); Masuda K., Kikuhara N., Takahashi H., Yamanaka K., The relationship between muscle cross-sectional area and strength in various isokinetic movements among soccer players, Journal of Sports Sciences, 21, pp. 851-858, (2003); McKim K., Taunton J., The effectiveness of compression shorts in the treatment of athletes with osteitis pubis, New Zealand Journal of Sports Medicine, 29, pp. 70-73, (2001); McSweeney S.E., Naraghi A., Salonen D., Theodoropoulos J., White L.M., Hip and groin pain in the professional athlete, Candian Association Radiologists Journal, 63, 2, pp. 87-99, (2012); Nadler S.F., Malanga G.A., DePrince M., Stitik T.P., Feinberg J.H., The relationship between lower extremity injury, low back pain, and hip muscle strength in male and female collegiate athletes, Clinical Journal of Sports Medicine, 10, 2, pp. 89-97, (2000); O'Connor D.M., Groin injuries in professional rugby league players: A prospective study, Journal of Sports Sciences, 22, 7, pp. 629-636, (2004); Pham D., Scott K., Presentation of osteitis and osteomyelitis pubis as acute abdominal pain, Permanente Journal, 11, pp. 65-68, (2007); Pincivero D.M., Lephart S.M., Karunakara R.A., Reliability and precision of isokinetic strength and muscular endurance for the quadriceps and hamstrings, International Journal of Sports Medicine, 18, 2, pp. 113-117, (1997); Pontaga I., Muscle strength imbalance in the hip joint caused by fast movements, Mechanics of Composite Materials, 39, 4, pp. 365-368, (2003); Poulmedis P., Isokinetic maximal torque power of Greek elite soccer players, Journal of Orthopedic and Sports Physical Therapy, 6, 5, pp. 293-295, (1985); Rahnama N., Lees A., Bambaecichi E., A comparison of muscle strength and flexibility between the preferred and non-preferred leg in English soccer players, Ergonomics, 48, 11-14, pp. 1568-1575, (2005); Read M.T.F., Concise guide to sports injuries, pp. 77-80, (2008); Rodriguez C., Miguel A., Lima H., Heinrichs K., Osteitis pubis syndrome in the professional soccer athlete: A case report, Journal of Athletic Training, 36, pp. 437-440, (2001); Sudarshan A., Physical therapy management of osteitis pubis in a 10-year-old cricket fast bowler, Physiotherapy Theory and Practice, 27, pp. 1-11, (2012); Verrall G.M., Slavotinek J.P., Fon G.T., Incidence of pubic bone marrow oedema in Australian rules football players: Relation to groin pain, British Journal Sports Medicine, 35, pp. 28-33, (2001); Williams P.R., Thomas D.P., Downes E.M., Osteitis pubis and instability of the pubic symphysis. When nonoperative measures fail, American Journal of Sports Medicine, 28, pp. 350-355, (2000); Wyatt M.P., Edwards A.M., Comparison ofquadriceps and hamstring torque values during isokinetic exercise, Journal of Orthopedic and Sports Physical Therapy, 3, 2, pp. 48-56, (1981)","A. A. Abdel-Aziem; Department of Biomechanics, Cairo University, Giza, Egypt; email: amralmaz@yahoo.com","","Routledge","02640414","","JSSCE","24499182","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-84896489872" "Kenneally-Dabrowski C.; Brown N.A.T.; Warmenhoven J.; Serpell B.G.; Perriman D.; Lai A.K.M.; Spratford W.","Kenneally-Dabrowski, Claire (57191893790); Brown, Nicholas A.T. (14031257600); Warmenhoven, John (56958579900); Serpell, Benjamin G. (37051462800); Perriman, D. (25226126000); Lai, Adrian K.M. (56531436200); Spratford, W. (26325774500)","57191893790; 14031257600; 56958579900; 37051462800; 25226126000; 56531436200; 26325774500","Late swing running mechanics influence hamstring injury susceptibility in elite rugby athletes: A prospective exploratory analysis","2019","Journal of Biomechanics","92","","","112","119","7","24","10.1016/j.jbiomech.2019.05.037","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85066463483&doi=10.1016%2fj.jbiomech.2019.05.037&partnerID=40&md5=a1215648c1c06aa4fb62262b2ecb8df6","ANU Medical School, Australian National University, Canberra, ACT, Australia; Australian Institute of Sport, Canberra, ACT, Australia; Brumbies Rugby, Canberra, 2617, ACT, Australia; University of Canberra Research Institute for Sport and Exercise, Faculty of Health, University of Canberra, Canberra, ACT, Australia; Discipline of Sport and Exercise Science, Faculty of Health, University of Canberra, Canberra, ACT, Australia; Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada; Trauma and Orthopaedic Research Unit, Canberra Hospital, Canberra, ACT, Australia; Discipline of Physiotherapy, Faculty of Health, University of Canberra, Canberra, ACT, Australia; Exercise & Sport Science, Faculty of Health Sciences, University of Sydney, Sydney, NSW, Australia","Kenneally-Dabrowski C., ANU Medical School, Australian National University, Canberra, ACT, Australia, Australian Institute of Sport, Canberra, ACT, Australia; Brown N.A.T., Australian Institute of Sport, Canberra, ACT, Australia, University of Canberra Research Institute for Sport and Exercise, Faculty of Health, University of Canberra, Canberra, ACT, Australia; Warmenhoven J., Australian Institute of Sport, Canberra, ACT, Australia, Exercise & Sport Science, Faculty of Health Sciences, University of Sydney, Sydney, NSW, Australia; Serpell B.G., Brumbies Rugby, Canberra, 2617, ACT, Australia, University of Canberra Research Institute for Sport and Exercise, Faculty of Health, University of Canberra, Canberra, ACT, Australia; Perriman D., ANU Medical School, Australian National University, Canberra, ACT, Australia, Trauma and Orthopaedic Research Unit, Canberra Hospital, Canberra, ACT, Australia, Discipline of Physiotherapy, Faculty of Health, University of Canberra, Canberra, ACT, Australia; Lai A.K.M., Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada; Spratford W., University of Canberra Research Institute for Sport and Exercise, Faculty of Health, University of Canberra, Canberra, ACT, Australia, Discipline of Sport and Exercise Science, Faculty of Health, University of Canberra, Canberra, ACT, Australia","Hamstring injuries are one of the most prevalent injuries in rugby union and many other running-based sports, such as track sprinting and soccer. The majority of these injuries occur during running; however, the relationship between running mechanics and hamstring injury is unclear. Obtaining large samples of prospective injury data to examine this relationship is difficult, and therefore exploratory analysis frameworks may assist in deriving valuable information from studies with small but novel samples. The aim of this study was to undertake a prospective exploratory analysis of the relationship between running mechanics and hamstring injury. Kinematic and kinetic data of the trunk, pelvis and lower limbs were collected during maximal overground running efforts for ten elite rugby union athletes. Subsequently, hamstring injury occurrence was recorded for the following Super Rugby season, during which three athletes sustained a running-based hamstring injury. Functional principal component analysis was used to visualise patterns of variability in running mechanics during the late swing phase between athletes. Results indicated that subsequently injured athletes demonstrated a tendency for greater thoracic lateral flexion, greater hip extension moments and greater knee power absorption, compared to uninjured athletes. All variables demonstrated an ability to descriptively differentiate between injured and uninjured athletes at approximately 60% of the late swing phase. Therefore, we hypothesize that greater thoracic lateral flexion, a greater hip extension moment and greater knee power absorption between peak hip flexion and peak knee extension during the late swing phase may put rugby athletes at greater risk of running-based hamstring injury. © 2019 Elsevier Ltd","Biomechanics; fPCA; Muscle injuries; Rugby","Adult; Athletes; Biomechanical Phenomena; Football; Hamstring Muscles; Hip Joint; Humans; Knee Joint; Lower Extremity; Male; Pelvis; Prospective Studies; Running; Torso; Young Adult; Biomechanics; Physiological models; Sports; Exploratory analysis; fPCA; Functional principal component analysis; Knee extension; Muscle injuries; Pelvis and lower limbs; Power absorption; Rugby; Article; athlete; biomechanics; body movement; controlled study; disease predisposition; exploratory research; hamstring muscle; hip extension; hip flexion; human; human experiment; kinematics; kinetics; knee extension; knee function; knee power absorption; lower limb; male; muscle injury; pelvis; priority journal; prospective study; risk assessment; rugby; running; thoracic lateral flexion; trunk; adult; athlete; biomechanics; football; hamstring muscle; hip; injury; knee; pathophysiology; physiology; running; young adult; Principal component analysis","Besier T.F., Sturnieks D.L., Alderson J.A., Lloyd D.G., Repeatability of gait data using a functional hip joint centre and a mean helical knee axis, J. 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Biomech., 49, pp. 1468-1476, (2016); Ramsay J., Hooker G., Graves S., Functional Data Analysis with R and MATLAB, (2009); Roberts S.P., Trewartha G., Higgitt R.J., El-Abd J., Stokes K.A., The physical demands of elite English rugby union, J. Sports Sci., 26, pp. 825-833, (2008); Saw R., Finch C.F., Samra D., Baquie P., Cardoso T., Hope D., Orchard J.W., Injuries in Australian rules football: an overview of injury rates, patterns, and mechanisms across all levels of play, Sports Health, 10, pp. 208-216, (2017); Schache A.G., Blanch P.D., Dorn T.W., Brown N.A., Rosemond D., Pandy M.G., Effect of running speed on lower limb joint kinetics, Med. Sci. Sports Exerc., 43, pp. 1260-1271, (2011); Schache A.G., Dorn T.W., Blanch P.D., Brown N.A., Pandy M.G., Mechanics of the human hamstring muscles during sprinting, Med. Sci. Sports Exerc., 44, pp. 647-658, (2012); Schache A.G., Kim H.-J., Morgan D.L., Pandy M.G., Hamstring muscle forces prior to and immediately following an acute sprinting-related muscle strain injury, Gait Posture, 32, pp. 136-140, (2010); Schache A.G., Wrigley T.V., Baker R., Pandy M.G., Biomechanical response to hamstring muscle strain injury, Gait Posture, 29, pp. 332-338, (2009); Schuermans J., Van Tiggelen D., Palmans T., Danneels L., Witvrouw E., Deviating running kinematics and hamstring injury susceptibility in male soccer players: cause or consequence?, Gait Posture, 57, pp. 270-277, (2017); Shea K.M., Lenhoff M.W., Otis J.C., Backus S.I., Validation of a method for location of the hip joint center, Gait Posture, 2, pp. 157-158, (1997); Shield A.J., Bourne M.N., Hamstring injury prevention practices in elite sport: evidence for eccentric strength vs lumbo-pelvic training, Sports Med., 48, pp. 513-524, (2018); Sun Y., Wei S., Zhong Y., Fu W., Li L., Liu Y., How joint torques affect hamstring injury risk in sprinting swing–stance transition, Med. Sci. Sports Exerc., 47, pp. 373-380, (2015); Thelen D.G., Chumanov E.S., Best T.M., Swanson S.C., Heiderscheit B.C., Simulation of biceps femoris musculotendon mechanics during the swing phase of sprinting, Med. Sci. Sports Exerc., 37, pp. 1931-1938, (2005); Vardaxis V., Hoshizaki T.B., Power patterns of the leg during the recovery phase of the sprinting stride for advanced and intermediate sprinters, Int. J. Sport Biomech., 5, pp. 332-349, (1989); Wan X., Qu F., Garrett W.E., Liu H., Yu B., The effect of hamstring flexibility on peak hamstring muscle strain in sprinting, J. Sport Health Sci., 6, pp. 283-289, (2017); Warmenhoven J., Cobley S., Draper C., Harrison A., Bargary N., Smith R., Considerations for the use of functional principal components analysis in sports biomechanics: examples from on-water rowing, Sports Biomech., pp. 1-25, (2017); Williams S., Trewartha G., Kemp S., Stokes K., A meta-analysis of injuries in senior men's professional Rugby Union, Sports Med., 43, pp. 1043-1055, (2013); Willson J.D., Dougherty C.P., Ireland M.L., Davis I.M., Core stability and its relationship to lower extremity function and injury, JAAOS-J. Am. Acad. Orthopaed. Surgeons, 13, pp. 316-325, (2005); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., pp. 36-41, (2004); Yu B., Liu H., Garrett W.E., Mechanism of hamstring muscle strain injury in sprinting, J. Sport Health Sci., 6, pp. 130-132, (2017); Zhong Y., Fu W., Wei S., Li Q., Liu Y., Joint torque and mechanical power of lower extremity and its relevance to hamstring strain during sprint running, J. Healthcare Eng., 2017, pp. 1-7, (2017)","C. Kenneally-Dabrowski; Australian Institute of Sport, Bruce, Leverrier Street, 2617, Australia; email: Claire.kenneally-dabrowski@ausport.gov.au","","Elsevier Ltd","00219290","","JBMCB","31176462","English","J. Biomech.","Article","Final","","Scopus","2-s2.0-85066463483" "Brown T.N.; McLean S.G.; Palmieri-Smith R.M.","Brown, T.N. (35214355000); McLean, S.G. (7102155685); Palmieri-Smith, R.M. (15846505300)","35214355000; 7102155685; 15846505300","Associations between lower limb muscle activation strategies and resultant multi-planar knee kinetics during single leg landings","2014","Journal of Science and Medicine in Sport","17","4","","408","413","5","17","10.1016/j.jsams.2013.05.010","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902437202&doi=10.1016%2fj.jsams.2013.05.010&partnerID=40&md5=36c85d716cd782894711c7a8a125ad0f","School of Kinesiology, The University of Michigan, Ann Arbor, MI, United States","Brown T.N., School of Kinesiology, The University of Michigan, Ann Arbor, MI, United States; McLean S.G., School of Kinesiology, The University of Michigan, Ann Arbor, MI, United States; Palmieri-Smith R.M., School of Kinesiology, The University of Michigan, Ann Arbor, MI, United States","Objectives: Anterior cruciate ligament injury prevention programs purportedly improve knee joint loading through beneficial modification of lower limb neuromuscular control strategies and joint biomechanics, but little is known about how these factors relate during single-legged landings. Thus, we examined the relationship between explicit lower limb muscular pre-activity patterns and knee joint biomechanics elicited during such landings. Design: Randomized controlled trial. Methods: Thirty-five female athletes had 3D knee joint biomechanics and lower limb EMG data recorded during a series of single-leg landings. Regression analysis assessed the relationship between pre-activity of vastus lateralis, lateral hamstring and rectus femoris with peak knee flexion angle and moment, and external anterior tibial shear force. Vastus lateralis, lateral hamstring and vastus lateralis:lateral hasmtring co-contraction assessed the relationship with knee abduction angle and moment. Results: Greater pre-activity of rectus femoris predicted increased peak anterior tibial shear force (R2=0.235, b=2.41 and P=0.003) and reduced knee flexion moment (R2=0.131, b=-0.591, and P=0.032), while greater lateral hamstring predicted decreased peak knee flexion angle (R2=0.113, b=8.96 and P=0.048). No EMG pre-activity parameters were predictors (P>0.05) for knee abduction angle and moment. Conclusions: Current outcomes suggest reducing reliance on quadriceps activation may be beneficial during single-legged landings. It also, however, may be required for adequate joint stability during such maneuvers. Further research is needed to determine if inadequate hamstring activation, rather than elevated quadriceps activation, leads to hazardous loading during single-legged landings. © 2013 Sports Medicine Australia.","Biomechanics; EMG; Knee; Muscle activation; Neuromechanics","Adolescent; Biomechanical Phenomena; Electromyography; Female; Humans; Imaging, Three-Dimensional; Knee Joint; Lower Extremity; Muscle Contraction; Muscle, Skeletal; Quadriceps Muscle; Rotation; Tibia; Video Recording; abduction; adolescent; article; association; athlete; basketball; biomechanics; clinical article; controlled study; electromyogram; electromyography; female; force; hamstring; hockey; human; joint stability; kinetics; knee function; leg muscle; muscle contraction; musculoskeletal system parameters; neuromuscular function; randomized controlled trial; rectus femoris muscle; single leg landing; soccer; standing; tibialis anterior muscle; vastus lateralis muscle; knee; leg; physiology; quadriceps femoris muscle; rotation; skeletal muscle; three dimensional imaging; tibia; videorecording","Griffin L.Y., Albohm M.J., Arendt E.A., Et al., Understanding and preventing noncontact anterior cruciate ligament injuries: a review of the Hunt Valley II meeting, January 2005, Am J Sports Med, 34, 9, pp. 1512-1532, (2006); Krosshaug T., Nakamae A., Boden B.P., Et al., Mechanisms of anterior cruciate ligament injury in basketball - video analysis of 39 cases, Am J Sports Med, 35, 3, pp. 359-367, (2007); Shimokochi Y., Shultz S.J., Mechanisms of noncontact anterior cruciate ligament injury, J Athl Train, 43, 4, pp. 396-408, (2008); Sell T.C., Ferris C.M., Abt J.P., Et al., Predictors of proximal tibia anterior shear force during a vertical stop-jump, J Orthop Res, 25, 12, pp. 1589-1597, (2007); Palmieri-Smith R.M., Woitys E.M., Ashton-Miller J.A., Association between preparatory muscle activation and peak valgus knee angle, J Electromyogr Kinesiol, 18, 6, pp. 973-979, (2008); Palmieri-Smith R.M., McLean S.G., Ashton-Miller J.A., Et al., Association of quadriceps and hamstrings cocontraction patterns with knee joint loading, J Athl Train, 44, 3, pp. 256-263, (2009); Grillner S., A role for muscle stiffness in meeting the changing postural and locomotor requirements for the force development by the ankle extensors, Acta Physiol Scand, 86, pp. 92-108, (1972); Myklebust G., Engebretsen L., Braekken I.H., Et al., Prevention of anterior cruciate ligament injuries in female team handball players: a prospective intervention study over three seasons, Clin J Sport Med, 13, 2, pp. 71-78, (2003); McLean S.G., Felin R.E., Suedekum N., Et al., Impact of fatigue on gender-based high-risk landing strategies, Med Sci Sports Exerc, 39, 3, pp. 502-514, (2007); Brown T.N., Palmieri-Smith R.M., McLean S.G., Sex and limb differences in hip and knee kinematics and kinetics during anticipated and unanticipated jump landings: implications for anterior cruciate ligament injury, Br J Sports Med, 43, 13, pp. 1049-1056, (2009); Wu G., Siegler S., Allard P., Et al., ISB recommendation on definitions of joint coordinate system of various joints for the reporting of human joint motion - part 1: ankle, hip, and spine, J Biomech, 35, 4, pp. 543-548, (2002); Bell A.L., Pedersen D.R., Brand R.A., A comparison of the accuracy of several hip center location prediction methods, J Biomech, 23, 6, pp. 617-621, (1990); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: application to the knee, J Biomech Eng, 105, 2, pp. 136-144, (1983); Dempster W.T., Gabel W.C., Felts W.J., The anthropometry of the manual work space for the seated subject, Am J Phys Anthropol, 17, pp. 289-317, (1959); Delagi E.F., Anatomic guide for the electromyographer: the limbs, (1975); Rudolph K.S., Axe M.J., Buchanan T.S., Et al., Dynamic stability in the anterior cruciate ligament deficient knee, Knee Surg Sports Traumatol Arthrosc, 9, 2, pp. 62-71, (2001); Pflum M.A., Shelburne K.B., Torry M.R., Et al., Model prediction of anterior cruciate ligament force during drop-landings, Med Sci Sports Exerc, 36, 11, pp. 1949-1958, (2004); Li G., Rudy T.W., Sakane M., Et al., The importance of quadriceps and hamstring muscle loading on knee kinematics and in-situ forces in the ACL, J Biomech, 32, 4, pp. 395-400, (1999); Berns G.S., Hull M.L., Patterson H.A., Strain in the anteromedial bundle of the anterior cruciate ligament under combination loading, J Orthop Res, 10, 2, pp. 167-176, (1992); Piziali R.L., Seering W.P., Nagel D.A., Et al., The function of the primary ligaments of the knee in anterior-posterior and medial-lateral motions, J Biomech, 13, 9, pp. 777-784, (1980); McLean S.G., Huang X., Su A., Et al., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clin Biomech, 19, 8, pp. 828-838, (2004); Hewett T.E., Stroupe A.L., Nance T.A., Et al., Plyometric training in female athletes. Decreased impact forces and increased hamstring torques, Am J Sports Med, 24, 6, pp. 765-773, (1996); McNitt-Gray J.L., Kinematics and impulse characteristics of drop landings from three heights, Int J Sport Biomech, 7, 2, pp. 201-224, (1991); Shultz S.J., Nguyen A.D., Leonard M.D., Et al., Thigh strength and activation as predictors of knee biomechanics during a drop jump task, Med Sci Sports Exerc, 41, 4, pp. 857-866, (2009); Shimokochi Y., Lee S.Y., Shultz S.J., Et al., The relationships among sagittal-plane lower extremity moments: implications for landing strategy in anterior cruciate ligament injury prevention, J Athl Train, 44, 1, pp. 33-38, (2009); Herzog W., Read L.J., Lines of action and moment arms of the major force-carrying structures crossing the human knee joint, J Anat, 182, pp. 213-230, (1993); Zhang L.Q., Wang G.Z., Dynamic and static control of the human knee joint in abduction-adduction, J Biomech, 34, 9, pp. 1107-1115, (2001); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Med Sci Sports Exerc, 35, 1, pp. 119-127, (2003); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Et al., The effect of neuromuscular training on the incidence of knee injury in female athletes. A prospective study, Am J Sports Med, 27, 6, pp. 699-706, (1999); McLean S.G., Beaulieu M.L., Complex integrative morphological and mechanical contributions to ACL injury risk, Exerc Sport Sci Rev, 38, 4, pp. 192-200, (2010)","T.N. Brown; School of Kinesiology, The University of Michigan, Ann Arbor 48109, MI, 401 Washtenaw Avenue, United States; email: tynbrown@umich.edu","","Elsevier Ltd","14402440","","JSMSF","23849907","English","J. Sci. Med. Sport","Article","Final","","Scopus","2-s2.0-84902437202" "Jones R.I.; Ryan B.; Todd A.I.","Jones, Robert I. (56543853600); Ryan, Bennett (56544090600); Todd, Andrew I. (37662227100)","56543853600; 56544090600; 37662227100","Muscle fatigue induced by a soccer match-play simulation in amateur Black South African players","2015","Journal of Sports Sciences","33","12","","1305","1311","6","17","10.1080/02640414.2015.1022572","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928642800&doi=10.1080%2f02640414.2015.1022572&partnerID=40&md5=65561568006c6366bd034daa36dc2f6e","Department of Human Kinetics and Ergonomics, Rhodes University, Grahamstown, South Africa","Jones R.I., Department of Human Kinetics and Ergonomics, Rhodes University, Grahamstown, South Africa; Ryan B., Department of Human Kinetics and Ergonomics, Rhodes University, Grahamstown, South Africa; Todd A.I., Department of Human Kinetics and Ergonomics, Rhodes University, Grahamstown, South Africa","Abstract: The purpose of the current study was to investigate the effects of a soccer-specific fatigue protocol on the temporal changes in torque producing abilities of the thigh within African soccer players. Twenty amateur Black South African soccer players performed the SAFT90 soccer match-play simulation protocol, while isokinetic measurements were obtained pre-exercise (T0), after the 1st half (T45), after half time (T60) and after the 2nd half (T105). During SAFT90 performance, significant overall concentric quadriceps peak torque changes were observed (1.05 rad · s−1 = 16.6%, 3.14 rad · s−1 = 9.5%). Eccentric hamstring peak torque also decreased significantly over time (1.05 rad · s−1 = 17.4%, 3.14 rad · s−1 = 18.5%), with significant reductions occurring during both halves. The functional strength ratio (eccH:conQ) at 3.14 rad · s−1 was observed to significantly decrease by 10.1% overall. The indicated time-dependent changes in Black South African players have implications for competitive performance and increased predisposition to hamstring muscle injuries. Because of muscle fatigue, the hamstrings may have insufficient eccentric strength during the late swing phase when sprinting, resulting in eccentric overload and damage to the muscle. The changes in strength found in the current study help explain the increased predisposition to hamstring strains during the latter stages of both halves of match-play as reported by epidemiological studies. © 2015, © 2015 Taylor & Francis.","ethnicity; hamstring injury; isokinetics; muscle fatigue; soccer","Adult; African Continental Ancestry Group; Biomechanical Phenomena; Competitive Behavior; Humans; Male; Muscle Fatigue; Muscle, Skeletal; Quadriceps Muscle; Risk Factors; Soccer; Thigh; Time Factors; Torque; adult; biomechanics; Black person; competitive behavior; human; injuries; male; muscle fatigue; physiology; quadriceps femoris muscle; risk factor; skeletal muscle; soccer; thigh; time; torque","Andersson H., Raastad T., Nilsson J., Paulsen G., Garthe I., Kadi F., Neuromuscular fatigue and recovery in elite female soccer: Effects of active recovery, Medicine & Science in Sports & Exercise, 40, 2, pp. 372-380, (2008); Arnason A., Sigurdsson S., Gudmundsson A., Risk factors for injuries in football, American Journal of Sports Medicine, 32, pp. 2-16, (2004); 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Lewin G., The incidence of injury in an English professional soccer club during one competitive season, Physiotherapy, 7, pp. 601-605, (1989); Lieber R., Friden J., Selective damage of fast glycolytic muscle fibres with eccentric contraction of the rabbit tibialis anterior, Acta Physiologica Scandinavica, 133, pp. 587-588, (1988); Lovell R., Knapper B., Small K., Physiological responses to SAFT90: A new soccer-specific match simulation, Coaching and Sports Science, 2, pp. 5-8, (2008); Lovell R., Midgley A., Barrett S., Carter D., Small K., Effects of different half-time strategies on second half soccer- specific speed, power and dynamic strength, Scandinavian Journal of Medicine and Science in Sports, 20, pp. 180-189, (2013); Magalhaes J., Rebelo A., Oliveira E., Silva J.R., Marques F., Ascensao A., Impact of loughborough intermittent shuttle test versus soccer match on physiological, biochemical and neuromuscular parameters, European Journal of Applied Physiology, 108, pp. 39-48, (2010); Marshall P.W.M., Lovell R., Jeppesen G.K., Andersen K., Siegler J.C., Hug F., Hamstring muscle fatigue and central motor output during a simulated soccer match, PloS One, 9, 7, pp. 102711-102753, (2014); Perrin D., Isokinetic exercise and assessment, (1993); Pinniger G., Steele J., Groeller H., Does fatigue induced by repeated dynamic efforts affect hamstring muscle function?, Medicine and Science in Sports and Exercise, 32, pp. 647-653, (2000); Portney L.G., Watkins M.P., K D., Power analysis and determination of sample size, Foundations of clinical research: Applications to practice, (1997); Pull M., Ranson C., Eccentric muscle actions: Implications for injury prevention and rehabilitation, Physical Therapy in Sport, 8, pp. 88-97, (2007); Rahnama N., Reilly T., Lees A., Graham-Smith P., Muscle fatigue induced by exercise simulating the work rate of competitive soccer, Journal of Sports Sciences, 21, pp. 933-942, (2003); Rampinini E., Bosio A., Ferraresi I., Petruolo A., Morelli A., Sassi A., Match-related fatigue in soccer players, Medicine and Science in Sports and Exercise, 43, 11, pp. 2161-2170, (2011); Robineau J., Jouaux T., Lacroix M., Babault N., Neuromuscular fatigue induced by a 90-minute soccer game modeling, Journal of Strength and Conditioning Research, 26, 2, pp. 555-562, (2012); Silva A., Santhiago V., Papoti M., Gobatto C., Psychological, biochemical and physiological responses of Brazilian soccer players during a training program, Science and Sports, 23, pp. 66-72, (2008); Small K., McNaughton L., Greig M., Lovell R., The effects of multidirectional soccer-specific fatigue on markers of hamstring injury risk, Journal of Science and Medicine in Sport, 13, 1, pp. 120-125, (2010); Tourny-Chollet C., Leroy D., Leger H., Beuret-Blanquart F., Isokinetic knee muscle strength of soccer players according to their position, International Journal of Sports Medicine, 8, pp. 187-193, (2000); Verrall G., Slavotinek J.P., Barnes P.G., Fon G., Spriggins A.J., Clinical risk factors for hamstring muscle strain injury: A prospective study with correlation of injury by magnetic resonance imaging, British Journal of Sports Medicine, 35, pp. 435-439, (2001); Walden M., Hugglund M., Ekstrand J., UEFA Champions League study: A prospective study of injuries in professional football during the 2001–2002 season, British Journal of Sports Medicine, 39, pp. 542-546, (2005); Weston R., Mbambo Z., Myburgh K.H., Running economy of African and Caucasian distance runners, Medicine and Science in Sports and Exercise, 32, pp. 1130-1134, (2000); Witvrouw E., Danneels L., Asselman P., D'Have T., Cambier D., Muscle flexibility as a risk factor for developing muscle injuries in male professional soccer players, American Journal of Sports Medicine, 31, 1, pp. 41-46, (2003); Wong P., Hong Y., Soccer injury in the lower extremities, British Journal of Sports Medicine, 39, pp. 473-482, (2005); Woods C., Hawkins R., Maltby S., The football association medical research programme: An audit of injuries in professional football- analysis of hamstring injuries, British Journal of Sports Medicine, 38, pp. 36-41, (2004); Worrell T., Factors associated with hamstring injuries: An approach to treatment and preventative measures, Sports Medicine, 17, pp. 338-345, (1994); Worrell T., Perrin D., Hamstring muscle injury: The influence of strength, flexibility, warm-up, and fatigue, Journal of Orthopaedic and Sports Physical Therapy, 16, pp. 12-18, (1992); Zakas A., Doganis G., Papakonstandinou V., Sentelidis T., Vamvakoudis E., Acute effects of static stretching duration on isokinetic peak torque production of soccer players, Journal of Bodywork and Movement Therapies, 10, pp. 89-95, (2006)","R.I. Jones; Department of Human Kinetics and Ergonomics, Rhodes University, Grahamstown, PO Box 94, 6140, South Africa; email: g07j0897@campus.ru.ac.za","","Routledge","02640414","","JSSCE","25764064","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-84928642800" "Cone J.R.; Berry N.T.; Goldfarb A.H.; Henson R.A.; Schmitz R.J.; Wideman L.; Shultz S.J.","Cone, John R. (23388237500); Berry, Nathaniel T. (55354621900); Goldfarb, Allan H. (7101785993); Henson, Robert A. (14622483200); Schmitz, Randy J. (7102530016); Wideman, Laurie (6603608537); Shultz, Sandra J. (7006678357)","23388237500; 55354621900; 7101785993; 14622483200; 7102530016; 6603608537; 7006678357","Effects of an individualized soccer match simulation on vertical stiffness and Impedance","2012","Journal of Strength and Conditioning Research","26","8","","2027","2036","9","24","10.1519/JSC.0b013e31823a4076","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84866041265&doi=10.1519%2fJSC.0b013e31823a4076&partnerID=40&md5=2b53cc357566574bc2845c340e4db6d5","Department of Kinesiology, University of North Carolina, Greensboro, United States; Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; University of Michigan, Ann Arbor, MI, United States","Cone J.R., Department of Kinesiology, University of North Carolina, Greensboro, United States; Berry N.T., Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Goldfarb A.H., Department of Kinesiology, University of North Carolina, Greensboro, United States; Henson R.A., University of Michigan, Ann Arbor, MI, United States; Schmitz R.J., Department of Kinesiology, University of North Carolina, Greensboro, United States; Wideman L., Department of Kinesiology, University of North Carolina, Greensboro, United States; Shultz S.J., Department of Kinesiology, University of North Carolina, Greensboro, United States","An observed relationship between soccer match duration and injury has led to research examining the changes in lower extremity mechanics and performance with fatiguing exercise. Because many fatigue protocols are designed to result in substantial muscular deficits, they may not reflect the fatigue associated with sport-specific demands that have been associated with the increasing incidence of injury as the match progresses. Thus, the aim of this study was to systematically analyze the progressive changes in lower extremity mechanics and performance during an individualized exercise protocol designed to simulate a 90-minute soccer match. Previous match analysis data were used to systematically develop a simulated soccer match exercise protocol that was individualized to the participant's fitness level. Twenty-four National Collegiate Athletic Association Division I soccer players (12 men, 12 women) participated in 2 testing sessions. In the first session, the participants completed the Yo-Yo Intermittent Recovery Test Level 1 to assess their fitness level and determine the 5 submaximal running intensities for their soccer match simulation. In the second test session, progressive changes in the rating of perceived exertion (RPE), lower extremity performance (vertical jump height, sprint speed, and cutting speed), and movement mechanics (jumping vertical stiffness and terminal landing impedance) were measured during the soccer match simulation. The average match simulation running distance was 10,165 6 1,001 m, consistent with soccer match analysis research. Time-related increases in RPE, and decrements in sprinting, and cutting speed were observed, suggesting that fatigue increased as the simulation progressed. However, there were no time-related decreases in vertical jump height, changes in lower extremity vertical stiffness in jumping, or vertical impedance during landing. Secondary analyses indicated that the coordinative changes responsible for the maintenance of stiffness and impedance differed between the dominant and nondominant limbs. Despite an increase in RPE to near exhaustive levels, and decrements in sprint and cutting performance, the participants were able to maintain jump performance and movement mechanics. Interestingly, the coordinative changes that allowed for the maintenance of vertical stiffness and impedance varied between limbs. Thus, suggesting that unilateral training for performance and injury prevention in soccer-specific populations should be considered. © 2012 National Strength and Conditioning Association.","Fitness; Intermittent exercise; Performance; Prescription; Yo-Yo","Adolescent; Athletic Performance; Biomechanics; Exercise Test; Female; Humans; Lower Extremity; Male; Muscle Fatigue; Physical Fitness; Running; Soccer; Young Adult; adolescent; adult; article; athletic performance; biomechanics; exercise test; female; fitness; human; injury; leg; male; methodology; muscle fatigue; physiology; running; sport","Arampatzis A., Schade F., Walsh M., Bruggemann G.-P., Influence of leg stiffness and its effect on myodynamic jumping performance, Journal of Electromyography and Kinesiology, 11, 5, pp. 355-364, (2001); Bangsbo J., The physiology of soccer - With special reference to intense intermittent exercise, Acta Physiologica Scandinavica, Supplement, 151, 619, pp. 1-155, (1994); Bangsbo J., Norregaard L., Thorso F., Activity profile of competition soccer, Can J Sport Sci, 16, pp. 110-116, (1991); Bonnard M., Sirin A.V., Oddsson L., Thorstensson A., Different strategies to compensate for the effects of fatigue revealed by neuromuscular adaptation processes in humans, Neurosci Lett, 166, pp. 101-105, (1994); Brughelli M., Cronin J., Influence of running velocity on vertical, leg and joint stiffness, Sports Med, 38, (2008); Brughelli M., Cronin J., A review of research on the mechanical stiffness in running and jumping: Methodology and implications, Scand J Med Sci Sports, 18, pp. 417-426, (2008); Di Salvo V., Baron R., Tschan H., Calderon Montero F.J., Bachl N., Pigozzi F., Performance characteristics according to playing position in elite soccer, International Journal of Sports Medicine, 28, 3, pp. 222-227, (2007); Draper J.A., Lancaster M.G., The 505 test: A test for agility in the horizontal plane, Australian Journal of Science and Medicine in Sport, 17, 1, pp. 15-18, (1985); Dutto D.J., Smith G.A., Changes in spring-mass characteristics during treadmill running to exhaustion, Medicine and Science in Sports and Exercise, 34, 8, pp. 1324-1331, (2002); Garcin M., Mille-Hamard L., Billat V., Influence of aerobic fitness level on measured and estimated perceived exertion during exhausting runs, International Journal of Sports Medicine, 25, 4, pp. 270-277, (2004); Gleeson N.P., Reilly T., Mercer T.H., Rakowski S., Rees D., Influence of acute endurance activity on leg neuromuscular and musculoskeletal performance, Medicine and Science in Sports and Exercise, 30, 4, pp. 596-608, (1998); Gollhofer A., Schmidtbleicher D., Dietz V., Regulation of muscle stiffness in human locomotion, International Journal of Sports Medicine, 5, 1, pp. 19-22, (1984); Greig M., The influence of soccer-specific fatigue on peak isokinetic torque production of the knee flexors and extensors, American Journal of Sports Medicine, 36, 7, pp. 1403-1409, (2008); Greig M.P., The influence of soccer-specific activity on the kinematics of an agility sprint, Eur J Sport Sci, 9, (2009); Greig M.P., McNaughton L.R., Lovell R.J., Physiological and mechanical response to soccer-specific intermittent activity and steady-state activity, Res Sports Med, 14, pp. 29-52, (2006); Hagglund M., Walden M., Ekstrand J., Exposure and injury risk in Swedish elite football: A comparison between seasons 1982 and 2001, Scand J Med Sci Sports, 13, 364-370; Hawkins R.D., Fuller C.W., A prospective epidemiological study of injuries in four English professional football clubs, British Journal of Sports Medicine, 33, 3, pp. 196-203, (1999); Hawkins R.D., Hulse M.A., Wilkinson C., Hodson A., Gibson M., The association football medical research programme: An audit of injuries in professional football, British Journal of Sports Medicine, 35, 1, pp. 43-47, (2001); Hughes, G andWatkins, J, Lower Limb Coordination and Stiffness during Landing from Volleyball Block Jumps. Res Sports Med, 16, (2008); Hunter I., Smith G.A., Preferred and optimal stride frequency, stiffness and economy: Changes with fatigue during a 1-h highintensity run, Eur J Appl Physiol, 100, (2007); Impellizzeri F.M., Rampinini E., Maffiuletti N., Marcora S.M., A vertical jump force test for assessing bilateral strength asymmetry in athletes, Medicine and Science in Sports and Exercise, 39, 11, pp. 2044-2050, (2007); Junge A., Chomiak J., Dvorak J., Incidence of football injuries in youth players. Comparison of players from two European regions, Am J Sports Med, 28, (2000); Junge A., Dvorak J., Graf-Baumann T., Football injuries during the world cup 2002, Am J Sports Med, 32, (2004); Komi P.V., Stretch-shortening cycle: A powerful model to study normal and fatigued muscle, Journal of Biomechanics, 33, 10, pp. 1197-1206, (2000); Komi P.V., Gollhofer A., Stretch reflexes can have an important role in force enhancement during SSC exercise, J Appl Biomech, 13, (1997); Krustrup P., Mohr M., Amstrup T., Rysgaard T., Johansen J., Steensberg A., Pedersen P.K., Bangsbo J., The Yo-Yo intermittent recovery test: Physiological response, reliability, and validity, Medicine and Science in Sports and Exercise, 35, 4, pp. 697-705, (2003); Krustrup P., Mohr M., Ellingsgaard H., Bangsbo J., Physical demands during an elite female soccer game: Importance of training status, Medicine and Science in Sports and Exercise, 37, 7, pp. 1242-1248, (2005); Kuitunen S., Kyrolainen H., Avela J., Komi P.V., Leg stiffness modulation during exhaustive stretch-shortening cycle exercise, Scand J Med Sci Sports, 17, pp. 67-75, (2007); Kyrolainen H., Avela J., McBride J.M., Koskinen S., Andersen J.L., Sipila S., Takala T.E.S., Komi P.V., Effects of power training on muscle structure and neuromuscular performance, Scandinavian Journal of Medicine and Science in Sports, 15, 1, pp. 58-64, (2005); McLean S.G., The ACL injury enigma: We can't prevent what we don't understand, J Athl Train, 43, pp. 538-540, (2008); McMahon T.A., Cheng G.C., The mechanics of running: How does stiffness couple with speed?, J Biomech, 23, SUPPL., pp. 65-78, (1990); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, Journal of Sports Sciences, 21, 7, pp. 519-528, (2003); Morgan B.E., Oberlander M.A., An examination of injuries in major league soccer. The inaugural season, American Journal of Sports Medicine, 29, 4, pp. 426-430, (2001); Morin J.-B., Jeannin T., Chevallier B., Belli A., Spring-mass model characteristics during sprint running: Correlation with performance and fatigue-induced changes, International Journal of Sports Medicine, 27, 2, pp. 158-165, (2006); Oliver J., Armstrong N., Williams C., Changes in jump performance and muscle activity following soccer-specific exercise, J Sports Sci, 26, (2008); Oliver J.L., Armstrong N., Williams C.A., Reliability and validity of a soccer-specific test of prolonged repeated-sprint ability, Int J Sports Physiol Perform, 2, (2007); Padua D.A., Arnold B.L., Perrin D.H., Gansneders B.M., Carcia C.R., Granata K.P., Fatigue, vertical leg stiffness, and stiffness control strategies in males and females, J Athl Train, 41, (2006); Plisky P.J., Rauh M.J., Kaminski T.W., Underwood F.B., Star excursion balance test as a predictor of lower extremity injury in high school basketball players, Journal of Orthopaedic and Sports Physical Therapy, 36, 12, pp. 911-919, (2006); Price R.J., Hawkins R.D., Hulse M.A., Hodson A., The Football Association medical research programme: An audit of injuries in academy youth football, British Journal of Sports Medicine, 38, 4, pp. 466-471, (2004); Rahnama N., Lees A., Bambaecichi E., A comparison of muscle strength and flexibility between the preferred and non-preferred leg in English soccer players, Ergonomics, 48, 11-14, pp. 1568-1575, (2005); Rahnama N., Lees A., Reilly T., Electromyography of selected lower-limb muscles fatigued by exercise at the intensity of soccer match-play, Journal of Electromyography and Kinesiology, 16, 3, pp. 257-263, (2006); Rahnama N., Reilly T., Lees A., Graham-Smith P., Muscle fatigue induced by exercise simulating the work rate of competitive soccer, Journal of Sports Sciences, 21, 11, pp. 933-942, (2003); Toumi H., Poumarat G., Best T.M., Martin A., Fairclough J., Benjamin M., Fatigue and muscle-tendon stiffness after stretchshortening cycle and isometric exercise, Appl Physiol Nutr Metab, 31, pp. 565-572, (2006)","J.R. Cone; Department of Kinesiology, University of North Carolina, Greensboro, United States; email: jrcone@uncg.edu","","","10648011","","","21997450","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-84866041265" "Cetin C.; Sekir U.; Yildiz Y.; Aydin T.; Ors F.; Kalyon T.A.","Cetin, C. (56218888200); Sekir, U. (8086677600); Yildiz, Y. (7004211534); Aydin, T. (6701318416); Ors, F. (6506706095); Kalyon, T.A. (6603618238)","56218888200; 8086677600; 7004211534; 6701318416; 6506706095; 6603618238","Chronic groin pain in an amateur soccer player","2004","British Journal of Sports Medicine","38","2","","223","224","1","22","10.1136/bjsm.2002.003483","https://www.scopus.com/inward/record.uri?eid=2-s2.0-1842559581&doi=10.1136%2fbjsm.2002.003483&partnerID=40&md5=fedea2331b492632abf161eecc5bff01","Department of Sports Medicine, Medical Faculty, Süleyman Demirel University, Isparta, Turkey; Department of Sports Medicine, Medical Faculty, Uludag University, Bursa, Turkey; Department of Sports Medicine, Gulhane Military Medicine Faculty, Ankara, Turkey; Gulhane Askeri Tip Akademisi, Ankara, Turkey; Department of Radiodiagnostics, Gulhane Military Medicine Faculty, Turkey; Department of Sports Medicine, Medical Faculty, Süleyman Demirel University, 32260 Isparta, Turkey","Cetin C., Department of Sports Medicine, Medical Faculty, Süleyman Demirel University, Isparta, Turkey, Department of Sports Medicine, Medical Faculty, Süleyman Demirel University, 32260 Isparta, Turkey; Sekir U., Department of Sports Medicine, Medical Faculty, Uludag University, Bursa, Turkey; Yildiz Y., Gulhane Askeri Tip Akademisi, Ankara, Turkey; Aydin T., Department of Sports Medicine, Gulhane Military Medicine Faculty, Ankara, Turkey; Ors F., Department of Radiodiagnostics, Gulhane Military Medicine Faculty, Turkey; Kalyon T.A., Department of Sports Medicine, Gulhane Military Medicine Faculty, Ankara, Turkey","Chronic groin pain is common in soccer players because of the biomechanics of kicking causing recurrent stress to the abdominal muscles, groin flexors, and adductor muscles. Myositis ossificans in adductor muscles is a rare cause of chronic groin pain in soccer players. Only two cases have been reported and the iliopsoas muscle was involved in both. This case report emphasises the importance of direct radiography for diagnosis in chronic groin pain and is a reminder that the development of myositis ossificans in the adductor muscles may be a cause.","","Adult; Chronic Disease; Groin; Humans; Magnetic Resonance Imaging; Male; Myositis Ossificans; Pain; Soccer; diclofenac; nonsteroid antiinflammatory agent; abdominal wall musculature; adult; article; athlete; biomechanics; case report; clinical feature; computer assisted tomography; diagnostic accuracy; diagnostic imaging; differential diagnosis; human; iliopsoas muscle; image analysis; inguinal region; male; massage; muscle contraction; nuclear magnetic resonance imaging; ossifying myositis; pain; radiography; sport; stretching; symptom","Zachazewski E.J., Magee D.J., Quillen W.S., Athletic Injuries and Rehabilitation, pp. 613-614, (1996); Thorndike A., Myositis ossificans traumatica, J Bone Joint Surg, 22, pp. 315-323, (1940); Fu F.H., Stone D.A., Sports Injuries; Mechanisms, Prevention, Treatment, pp. 758-759, (1994); Smodlaka V., Groin pain in soccer players, Phys Sportsmed, 8, pp. 57-61, (1980); Martens M.A., Hansen L., Mulier J.C., Adductor tendinitis and musculus abdominis tendinopattiy, Am J Sports Med, 15, pp. 353-356, (1987); Ekberg O., Persson N.H., Abrahamsson P.A., Et al., Longstanding groin pain in athletes: A multidisciplinary approach, Sports Med, 6, pp. 56-61, (1998); Renstrom P.A., Tendon and muscle injuries in the groin area, Clin Sports Med, 11, pp. 815-831, (1992); Kransdorf M.J., Meis J.M., Jelinek J.S., Myositis ossificans: MR appearance with radiologic-pathologic correlation, AJR Am J Roentgenol, 157, pp. 1243-1248, (1991); Petropoulos A.S., Sferopoulos N.K., Post traumatic myositis ossificans of the iliopsoas muscle. Apropos of a case with review of the literature, Rev Chir Orthop Reparatrice Appar Mot, 83, pp. 747-751, (1997); Thorseth K., A case or traumatic myositis ossificans in the iliopsoas muscle, Ada Orthop Stand, 39, pp. 73-75, (1968)","C. Cetin; Department of Sports Medicine, Medical Faculty, Süleyman Demirel University, 32260 Isparta, Turkey; email: cetin@medicine.ankara.edu.tr","","","03063674","","BJSMD","15039265","English","Br. J. Sports Med.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-1842559581" "Szulc A.M.; Buśko K.; Sandurska E.; Kołodziejczyk M.","Szulc, Adam M. (55024261400); Buśko, Krzysztof (56067031300); Sandurska, Elżbieta (57195216960); Kołodziejczyk, Michał (57200523706)","55024261400; 56067031300; 57195216960; 57200523706","The biomechanical characteristics of elite deaf and hearing female soccer players: Comparative analysis","2017","Acta of Bioengineering and Biomechanics","19","4","","127","133","6","17","10.5277/ABB-00907-2017-02","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85041536889&doi=10.5277%2fABB-00907-2017-02&partnerID=40&md5=6114f7c7b751c0663f436e9365e5736e","Institute of Physical Education, Kazimierz Wielki University in Bydgoszcz, Bydgoszcz, Poland; Institute of Experimental Biology, Kazimierz Wielki University in Bydgoszcz, Bydgoszcz, Poland","Szulc A.M., Institute of Physical Education, Kazimierz Wielki University in Bydgoszcz, Bydgoszcz, Poland; Buśko K., Institute of Physical Education, Kazimierz Wielki University in Bydgoszcz, Bydgoszcz, Poland; Sandurska E., Institute of Experimental Biology, Kazimierz Wielki University in Bydgoszcz, Bydgoszcz, Poland; Kołodziejczyk M., Institute of Physical Education, Kazimierz Wielki University in Bydgoszcz, Bydgoszcz, Poland","Purpose: The aim of this study was to examine the differences in body composition, strength and power of lower limbs, height of jump measured for the akimbo counter movement jumps, counter movement jump and spike jumps between deaf and hearing elite female soccer players. Methods: Twenty deaf (age: 23.7 ± 5.0 years, hearing loss: 96 ± 13.9 dB) and 25 hearing (age: 20.3 ± 3.8 years) participated in the study. Their WHR and BMI were calculated. Body fat was measured using the BIA method. The maximal power and height of jump were measured by force plate. Biodex dynamometer was used to evaluate isokinetic isometric strength of the hamstrings and quadriceps. Results: Significant differences between hearing and deaf soccer players in anthropometric values were for the waist and calf circumferences and the WHR index (p < 0.01, effect size 0.24–0.79). Statistically significant differences were observed for flexion of the lower limb in the knee joint for the relative joint torque and relative power obtained for the angular velocity of 300 degˑs–1 for both lower limbs (p < 0.01, effect size 0.19–0.48) and for 180 degˑs–1 during flexion of the left limb (p = 0.02, effect size 0.13). The hearing female football players developed significantly greater MVC in all the cases. Statistically significant differences between deaf and hearing athletes were found for spike jump for maximal power (1828.6 ± 509.4 W and 2215.2 ± 464.5 W, respectively; p = 0.02, effect size 0.14). Conclusions: Hearing impairment does not limit the opportunities for development of physical fitness in the population of deaf women. © 2018, Institute of Machine Design and Operation. All rights reserved.","Anthropometry; Body composition; Deaf athletes; Height of jump; Power of lower limb; Strength","Biomechanical Phenomena; Body Weight; Deafness; Female; Hearing; Humans; Muscle Contraction; Soccer; Torque; Young Adult; biomechanics; body weight; comparative study; female; hearing; hearing impairment; human; muscle contraction; pathophysiology; physiology; soccer; torque; young adult","Brughelli M., Harris N.K., Physiological characteristics of international soccer players, The Journal of Strength and Conditioning Research, 28, 2, pp. 308-318, (2014); Busko K., Madej A., Mastalerz A., Effects of the cycloer-gometer exercises on power and jumping ability measured during jumps performer on a dynamometry platform, Biology of Sport, 27, 1, pp. 35-40, (2010); Castagna C., Castellini E., Vertical Jump Performance in Italian male and female National Team soccer players, The Journal of Strength and Conditioning Research, 27, 4, pp. 1156-1161, (2013); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (1988); Datson N., Hulton A., Andersson H., Lewis T., Weston M., Drust B., Gregson W., Applied physiology of female soccer: An update, Sports Medicine, 44, 9, pp. 1225-1240, (2014); Gkouvatzi A.N., Mantis K., Kambas A., Comparative study of motor performance of deaf and hard of hearing students in recreation time, visual-motor control and upper limb speed and dexterity abilities, International Journal of Special Education, 25, 2, pp. 15-25, (2010); Hartman E., Houwen S., Visscher C., Motor skill performance and sports participation in deaf elementary school children, Adapted Physical Activity Quarterly, 28, pp. 132-145, (2011); Hartman E., Visscher C., Houwen S., The effect of age on physical fitness of deaf elementary school children, Paediatric Exercise Science, 19, pp. 267-278, (2011); Haugen T.A., Tonnessen E., Hem E., Leirstein S., Seiler S., VO2max characteristics of elite female soccer players, 1989– 2007, International Journal of Sports and Physiology and Performance, 9, pp. 515-521, (2014); Iwanska D., Madej A., Urbanik C., Comparative analysis of endurance of not hearing and hearing students, Biomedical Human Kinetics, 5, pp. 51-58, (2013); Martin J.J., Shapiro D.R., Prokesova E., Predictors of physical activity among European and American hearing impaired children, European Journal of Adapted Physical Activity, 6, 2, pp. 38-47, (2013); Martinez-Lagunas V., Niessen M., Hartmann U., Women’s football: Player characteristics and demands of the game, Journal of Sport and Health Science, 3, pp. 258-272, (2014); Nikolaidis P.T., Physical fitness in female soccer players by player position: A focus on anaerobic power, Human Movement, 15, 2, pp. 74-79, (2014); Orysiak J., Busko K., Mazur-Rozycka J., Michalski R., Gajewski J., Malczewska-Lenczowska J., Sitkowski D., Relationship between ACTN3 R577X polymorphism and physical abilities in Polish athletes, The Journal of Strength and Conditioning Research, 29, 8, pp. 2333-2339, (2015); Pietraszewski B., Siemienski A., Bober T., Struzik A., Rutkowska-Kucharska A., Nosal J., Rokita A., Lower extremity power in female soccer athletes: A pre-season and in-season comparison, Acta Bioeng. Biomech., 17, 3, pp. 129-135, (2015); Rajendran V., Roy F.G., Jeevanantham D., Postural control, motor skills, and health-related quality of life in children with hearing impairment: A systematic review, Archives of Oto-Rhino-Laryngology, 269, 4, (2011); Rosene J.M., Fogarty T.D., Mahaffey B.L., Isokinetic Hamstrings-Quadriceps Ratios in Intercollegiate Athletes, Journal of Athletic Training, 36, 4, pp. 378-383, (2001); Sander A., Keiner M., Wirth K., Schmidtbleicher K., Influence of a 2-year strength training programme on power performance in elite youth soccer players, European Journal of Sport Science, 13, 5, pp. 445-451, (2013); Struzik A., Pietraszewski B., Bober T., Relationship between H/Q ratio and variables describing CMJ and DJ jumps, Mitteilungen Klosterneuburg, 66, 2, pp. 123-133, (2016); Todd M.K., Scott D., Chisnall P.J., Fitness characteristics of English female soccer players: An analysis by position and playing standard, Science and Football IV, pp. 374-381, (2002); Walowska J., Bolach E., Evaluation of general physical fitness in hard of hearing and hearing children, Fizjoterapia, 19, 3, pp. 19-27, (2011); Winnick J.P., Short F.X., Physical fitness of adolescents with auditory impairments, Adapted Physical Activity Quarterly, 3, 1, pp. 58-66, (1986); Zwierzchowska A., Zebrowska A., Galkowski T., Mor-phofunctional development of children and adolescents with deafness, Archives Des Sciences, 66, 4, pp. 133-152, (2013)","A.M. Szulc; Institute of Physical Education, Kazimierz Wielki University, Bydgoszcz, ul. Sportowa 2, 85-091, Poland; email: aszul@ukw.edu.pl","","Institute of Machine Design and Operation","1509409X","","","29507430","English","Acta Bioeng. Biomech.","Article","Final","","Scopus","2-s2.0-85041536889" "Belhaj K.; Meftah S.; Mahir L.; Lmidmani F.; Elfatimi A.","Belhaj, K. (20733261100); Meftah, S. (56566477100); Mahir, L. (56465069300); Lmidmani, F. (37087392500); Elfatimi, A. (7801316449)","20733261100; 56566477100; 56465069300; 37087392500; 7801316449","Isokinetic imbalance of adductor–abductor hip muscles in professional soccer players with chronic adductor-related groin pain","2016","European Journal of Sport Science","16","8","","1226","1231","5","21","10.1080/17461391.2016.1164248","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961631708&doi=10.1080%2f17461391.2016.1164248&partnerID=40&md5=f9b81ac9a7441846de92e3a3c1056956","Department of Physical Medicine and Rehabilitation, Ibn Rochd University Hospital, Casablanca, Morocco","Belhaj K., Department of Physical Medicine and Rehabilitation, Ibn Rochd University Hospital, Casablanca, Morocco; Meftah S., Department of Physical Medicine and Rehabilitation, Ibn Rochd University Hospital, Casablanca, Morocco; Mahir L., Department of Physical Medicine and Rehabilitation, Ibn Rochd University Hospital, Casablanca, Morocco; Lmidmani F., Department of Physical Medicine and Rehabilitation, Ibn Rochd University Hospital, Casablanca, Morocco; Elfatimi A., Department of Physical Medicine and Rehabilitation, Ibn Rochd University Hospital, Casablanca, Morocco","This study aims to compare the isokinetic profile of hip abductor and adductor muscle groups between soccer players suffering from chronic adductor-related groin pain (ARGP), soccer players without ARGP and healthy volunteers from general population. Study included 36 male professional soccer players, who were randomly selected and followed-up over two years. Of the 21 soccer players eligible to participate in the study, 9 players went on to develop chronic ARGP and 12 players did not. Ten healthy male volunteers were randomly selected from the general population as a control group. Comparison between the abductor and adductor muscle peak torques for players with and without chronic ARGP found a statistically significant difference on the dominant and non-dominant sides (p <.005), with the abductor muscle significantly stronger than the adductor muscle. In the group of healthy volunteers, the adductor muscle groups were significantly stronger than the abductor muscle groups on both dominant and non-dominant sides (p <.05). For the group of players who had developed chronic ARGP, abductor–adductor torque ratios were significantly higher on the affected side (p =.008). The adductor muscle strength was also significantly decreased on the affected side. This imbalance appears to be a risk factor for adductor-related groin injury. Therefore, restoring the correct relationship between these two agonist and antagonist hip muscles may be an important preventative measure that should be a primary concern of training and rehabilitation programmes. © 2016 European College of Sport Science.","Football; groin; hip; muscle strength; torque","Adult; Athletes; Biomechanical Phenomena; Groin; Humans; Male; Muscle, Skeletal; Myalgia; Prospective Studies; Soccer; Torque; Young Adult; adult; athlete; biomechanics; human; inguinal region; male; myalgia; pathophysiology; physiology; prospective study; skeletal muscle; soccer; statistics and numerical data; torque; young adult","Arnason A., Sigurdsson S.B., Gudmundsson A., Holme I., Engebretsen L., Bahr R., Risk factors for injuries in football, American Journal of Sports Medicine, 32, pp. 5S-16S, (2004); Baldon M.R., Nakagawa T.H., Muniz T.B., Amorim C.F., Maciel C.D., Serrao F.V., Eccentric hip muscle function in females with and without patellofemoral pain syndrome, Journal of Athletic Training, 44, pp. 490-496, (2009); Burnett C.N., Betts E.F., King W.M., Reliability of isokinetic measurements of hip muscle torque in young boys, Physical Therapy, 70, 4, pp. 244-249, (1990); Cahalan T.D., Johnson M.E., Chao E.Y.S., Quantitative measurements of hip strength in different age groups, Clinical Orthopaedics and Related Research, 246, pp. 136-145, (1989); Davies G.J., A compendium of isokinetics in clinical usage and rehabilitation techniques, (1984); Davies G.J., Wilk K., Ellenbecker T.S., Assessment of strength, Orthopedic and sports physical therapy, pp. 225-257, (1997); Donatelli R., Catlin P.A., Backer G.S., Drane D.L., Slater S.M., Isokinetic hip abductor to adductor torque ratio in normals, Isokinet Exerc Sci, 1, pp. 103-111, (1991); Holmich P., Long-standing groin pain in sports people fall into three primary patterns, a “clinical entity” approach: A prospective study of 207 patients, British Journal of Sports Medicine, 41, pp. 247-252, (2007); Ibrahim A., Murrell G.A., Knapman P.J., Adductor strain and hip range of movement in male professional soccer players, Journal of Orthopaedic Surgery (Hong Kong), 15, 1, pp. 46-49, (2007); Ihara F.R., Cevales M., Pinto S.S., Isokinetic evaluation of the abductor and adductor musculature of the thigh in swimming athletes performing chest swimming style, A Revista Brasileira de Educação Física e Esporte, 6, 3, pp. 93-98, (2000); Johnson M.E., Mille M.L., Martinez K.M., Crombie G., Rogers M.W., Age-related changes in hip abductor and adductor joint torques, Archives of Physical Medicine and Rehabilitation, 85, pp. 593-597, (2004); Kea J., Kramer J., Forwell L., Birmingham T., Hip abduction-adduction strength and one-leg hop tests: Test-retest reliability and relationship to function in elite ice hockey players, Journal of Orthopaedic & Sports Physical Therapy, 31, 8, pp. 446-455, (2001); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Sciences and Medicine, 6, 2, pp. 154-165, (2007); Li R.C., Wu Y., Maffulli N., Chan K.M., Chan J.L., Eccentric and concentric isokinetic knee flexion and extension: A reliability study using the Cybex 6000 dynamometer, British Journal of Sports Medicine, 30, pp. 156-160, (1996); Lorentzon R., Wedren H., Pietila T., Incidence, nature, and causes of ice hockey injuries. A three-year prospective study of a Swedish elite ice hockey team, The American Journal of Sports Medicine, 16, pp. 392-396, (1988); Masuda K., Kikuhara N., Takahashi H., Yamanaka K., The relationship between muscle cross-sectional area and strength in various isokinetic movements among soccer players, Journal of Sports Sciences, 21, pp. 851-858, (2003); Mawdsley R.H., Knapik J.J., Comparison of isokinetic measurement with test repetition, Physical Therapy, 62, pp. 169-172, (1982); Mohammad W.S., Abdelraouf O.R., Elhafez S.M., Abdel-Aziem A.A., Nassif N.S., Isokinetic imbalance of hip muscles in soccer players with osteitis pubis, Journal of Sports Sciences, 32, 10, pp. 934-939, (2014); Murray M.P., Sepic S.B., Maximum isometric torque of hip abductor and adductor muscles, Physical Therapy, 48, pp. 1327-1335, (1968); Nicholas S.J., Tyler T.F., Adductor muscle strains in sport, Sports Medicine, 32, pp. 339-344, (2002); Niemuth P.E., Johnson R.J., Myers M.J., Thieman T.J., Hip muscle weakness and overuse injuries in recreational runners, Clinical Journal of Sport Medicine, 15, 1, pp. 14-21, (2005); O'Connor D., Groin injuries in professional rugby league players: A prospective study, Journal of Sports Sciences, 22, 7, pp. 629-636, (2004); Ostemig L.R., Isokinetic dynamometry: Implications for muscle testing and rehabilitation, Exercise and Sport Sciences Reviews, 14, pp. 45-80, (1986); Perrin D.H., Principles of isokinetic testing and exercise, Isokinetic exercise and assessment, pp. 35-71, (1993); Poulmedis P., Isokinetic maximal torque power and Greek elite soccer players, Journal of Orthopaedic & Sports Physical Therapy, 6, pp. 293-295, (1985); Quittan M., Wiesinger G.F., Crevenna R., Nuhr M.J., Sochor A., Pacher R., Fialka-Moser V., Isokinetic strength testing in patients with chronic heart failure-a reliability study, International Journal of Sports Medicine, 22, pp. 40-44, (2001); Ryan J., DeBurca N., Mc Creesh K., Risk factors for groin/hip injuries in field-based sports: A systematic review, British Journal of Sports Medicine, 48, pp. 1089-1096, (2014); Snow C.J., Blacklin K., Reliability of knee flexor peak torque measurements from a standardized test protocol on a Kin/Com dynamometer, Archives of Physical Medicine and Rehabilitation, 73, pp. 15-21, (1992); Sugimoto D., Mattacola C.G., Mullineaux D.R., Palmer T.G., Hewett T.E., Comparison of isokinetic hip abduction and adduction peak torques and ratio between sexes, Clinical Journal of Sport Medicine, 24, 5, pp. 422-428, (2014); Thorborg K., Couppe C., Petersen J., Magnusson S.P., Holmich P., Eccentric hip adduction and abduction strength in elite soccer players and matched controls: a cross-sectional study, British Journal of Sports Medicine, 45, pp. 10-13, (2011); Tippet S.R., Lower extremity strength and active range of motion in college baseball pitchers: A comparison between stance leg and kick leg, Journal of Orthopaedic & Sports Physical Therapy, 8, pp. 10-14, (1986); Tyler T.F., Nicholas S.J., Campbell R.J., McHugh M.P., The association of hip strength and flexibility with the incidence of adductor muscle strains in professional ice hockey players, Am J Sports Med, 29, pp. 124-128, (2001); Weir A., Brukner P., Delahunt E., Ekstrand J., Griffin D., Khan K.M., Holmich P., Doha agreement meeting on terminology and definitions in groin pain in athletes, British Journal of Sports Medicine, 49, 12, pp. 768-774, (2015); Werner J., Hagglund M., Walden M., Ekstrand J., UEFA injury study: A prospective study of hip and groin injuries in professional football over seven consecutive seasons, British Journal of Sports Medicine, 43, pp. 1036-1040, (2009); Wilhite M.R., Cohen E.R., Wilhite S.C., Reliability of concentric and eccentric measurements of quadriceps performance using the Kin-Com dynamometer: The effect of testing order for three different speeds, Journal of Orthopaedic & Sports Physical Therapy, 15, pp. 175-182, (1992)","K. Belhaj; Department of Physical Medicine and Rehabilitation, Ibn Rochd University Hospital, Casablanca, Morocco; email: belhajkarima2@gmail.com","","Taylor and Francis Ltd.","17461391","","","27017973","English","Eur. J. Sport Sci.","Article","Final","","Scopus","2-s2.0-84961631708" "Balsalobre-Fernández C.; Bishop C.; Beltrán-Garrido J.V.; Cecilia-Gallego P.; Cuenca-Amigó A.; Romero-Rodríguez D.; Madruga-Parera M.","Balsalobre-Fernández, Carlos (51663270900); Bishop, Chris (55998678600); Beltrán-Garrido, José Vicente (57194535366); Cecilia-Gallego, Pau (57209750386); Cuenca-Amigó, Aleix (57209744572); Romero-Rodríguez, Daniel (36661519100); Madruga-Parera, Marc (56336188100)","51663270900; 55998678600; 57194535366; 57209750386; 57209744572; 36661519100; 56336188100","The validity and reliability of a novel app for the measurement of change of direction performance","2019","Journal of Sports Sciences","37","21","","2420","2424","4","20","10.1080/02640414.2019.1640029","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85068593002&doi=10.1080%2f02640414.2019.1640029&partnerID=40&md5=a9ad3b56338bcdf9774c579c954bee47","Department of Physical Education, Sport and Human Movement, Autonomous University of Madrid, Madrid, Spain; Faculty of Science and Technology, London Sport Institute, Middlesex University, London, United Kingdom; University School of Health and Sport (EUSES), University of Rovira Virgili, Amposta, Spain; University School of Health and Sport (EUSES), University of Girona, Girona, Spain","Balsalobre-Fernández C., Department of Physical Education, Sport and Human Movement, Autonomous University of Madrid, Madrid, Spain; Bishop C., Faculty of Science and Technology, London Sport Institute, Middlesex University, London, United Kingdom; Beltrán-Garrido J.V., University School of Health and Sport (EUSES), University of Rovira Virgili, Amposta, Spain; Cecilia-Gallego P., University School of Health and Sport (EUSES), University of Rovira Virgili, Amposta, Spain; Cuenca-Amigó A., University School of Health and Sport (EUSES), University of Rovira Virgili, Amposta, Spain; Romero-Rodríguez D., University School of Health and Sport (EUSES), University of Girona, Girona, Spain; Madruga-Parera M., University School of Health and Sport (EUSES), University of Rovira Virgili, Amposta, Spain, University School of Health and Sport (EUSES), University of Girona, Girona, Spain","The aim of the present investigation was to analyze the validity and reliability of a novel iPhone app (CODTimer) for the measurement of total time and interlimb asymmetry in the 5 + 5 change of direction test (COD). To do so, twenty physically active adolescent athletes (age = 13.85 ± 1.34 years) performed six repetitions in the COD test while being measured with a pair of timing gates and CODTimer. A total of 120 COD times measured both with the timing gates and the app were then compared for validity and reliability purposes. There was an almost perfect correlation between the timing gates and the CODTimer app for the measurement of total time (r = 0.964; 95% Confidence interval (CI) = 0.95–1.00; Standard error of the estimate = 0.03 s.; p < 0.001). Moreover, non-significant, trivial differences were observed between devices for the measurement of total time and interlimb asymmetry (Effect size < 0.2, p > 0.05). Similar levels of reliability were observed between the timing gates and the app for the measurement of the 6 different trials of each participant (Timing gates: Intraclass correlation coefficient (ICC) = 0.651–0.747, Coefficient of variation (CV) = 2.6–3.5%; CODTimer: ICC = 0.671–0.840, CV = 2.2–3.2%). The results of the present study show that change of direction performance can be measured in a valid, reliable way using a novel iPhone app. © 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group.","agility; biomechanics; smartphone; Sprinting; technology","Adolescent; Athletic Performance; Exercise Test; Humans; Lower Extremity; Mobile Applications; Motor Skills; Reproducibility of Results; Smartphone; Soccer; adolescent; athletic performance; exercise test; human; lower limb; mobile application; motor performance; physiology; procedures; reproducibility; smartphone; soccer","Baker D.G., Newton R.U., Comparison of lower body strength, power, acceleration, speed, agility, and sprint momentum to describe and compare playing rank among professional rugby league players, Journal of Strength and Conditioning Research, 22, 1, pp. 153-158, (2008); Balsalobre-Fernandez C., Agopyan H., Morin J.-B., The validity and reliability of an iphone app for measuring running mechanics, Journal of Applied Biomechanics, 33, 3, pp. 222-226, (2017); Balsalobre-Fernandez C., Glaister M., Lockey R.A., The validity and reliability of an iPhone app for measuring vertical jump performance, Journal of Sports Sciences, 33, 15, pp. 1574-1579, (2015); Balsalobre-Fernandez C., Marchante D., Munoz-Lopez M., Jimenez S.L., Validity and reliability of a novel iPhone app for the measurement of barbell velocity and 1RM on the bench-press exercise, Journal of Sports Sciences, 36, 1, pp. 64-70, (2018); Bangsbo J., Time and motion characteristics of competitive soccer, Science and Football, 6, pp. 34-42, (1992); Bishop C., Turner A., Read P., Effects of inter-limb asymmetries on physical and sports performance: A systematic review, Journal of Sports Sciences, pp. 1-10, (2017); Castillo-Rodriguez A., Fernandez-Garcia J.C., Chinchilla-Minguet J.L., Carnero E.A., Relationship between muscular strength and sprints with changes of direction, Journal of Strength and Conditioning Research, 26, 3, pp. 725-732, (2012); Chaouachi A., Manzi V., Chaalali A., Wong D.P., Chamari K., Castagna C., Determinants analysis of change-of-direction ability in elite soccer players, Journal of Strength and Conditioning Research, 26, 10, pp. 2667-2676, (2012); Cooke K., Quinn A., Sibte N., Testing speed and agility in elite tennis players, Strength and Conditioning Journal, 33, 4, pp. 69-72, (2011); Cormack S.J., Newton R.U., McGuigan M.R., Doyle T.L.A., Reliability of measures obtained during single and repeated countermovement jumps, International Journal of Sports Physiology and Performance, 3, 2, pp. 131-144, (2008); Coswig V., Silva A.D.A.C.E., Barbalho M., Faria F.R., De, Nogueira C.D., Borges M., Gorla J.I., Assessing the validity of the MyJump2 App for measuring different jumps in professional cerebral palsy football players: An experimental study, JMIR MHealth and UHealth, 7, 1, (2019); Cruvinel-Cabral R.M., Oliveira-Silva I., Medeiros A.R., Claudino J.G., Jimenez-Reyes P., Boullosa D.A., The validity and reliability of the “ My Jump App ” for measuring jump height of the elderly, PeerJ, 6, (2018); Delaney J.A., Scott T.J., Ballard D.A., Duthie G.M., Hickmans J.A., Lockie R.G., Dascombe B.J., Contributing factors to change-of-direction ability in professional rugby league players, Journal of Strength and Conditioning Research, 29, 10, pp. 2688-2696, (2015); Dos'Santos T., Thomas C., Jones P.A., Comfort P., Assessing asymmetries in change of direction speed performance; application of change of direction deficit, Journal of Strength and Conditioning Research, (2018); Gabbett T.J., Kelly J.N., Sheppard J.M., Speed, change of direction speed, and reactive agility of rugby league players, Journal of Strength and Conditioning Research, 22, 1, pp. 174-181, (2008); Haugen T., Buchheit M., Sprint running performance monitoring: Methodological and practical considerations, Sports Medicine (Auckland, N.Z.), 46, 5, pp. 641-656, (2016); Haynes T., Bishop C., Antrobus M., Brazier J., The validity and reliability of the my jump 2 app for measuring the reactive strength index and drop jump performance, The Journal of Sports Medicine and Physical Fitness, (2018); Koo T.K., Li M.Y., A guideline of selecting and reporting intraclass correlation coefficients for reliability research, Journal of Chiropractic Medicine, 15, 2, pp. 155-163, (2016); Madruga-Parera M., Romero-Rodriguez D., Bishop C., Beltran-Valls M.R., Latinjak A.T., Beato M., Fort-Vanmeerhaeghe A., Effects of maturation on lower limb neuromuscular asymmetries in elite youth tennis players, Sports, 7, 5, (2019); Morin J.-B., Sprint running mechanics: New technology, new concepts, new perspectives, Aspetar Sports Medicine Journal, 2, 3, pp. 326-332, (2013); Naclerio F., Larumbe-Zabala E., Technical note on using the movement velocity to estimate the relative load in resistance exercises–Letter to the editor, Sports Medicine International Open, 2, 1, (2018); Nimphius S., Callaghan S.J., Bezodis N.E., Lockie R.G., Change of direction and agility tests, Strength and Conditioning Journal, 40, 1, pp. 26-38, (2018); Perez-Castilla A., Piepoli A., Delgado-Garcia G., Garrido-Blanca G., Garcia-Ramos A., Reliability and concurrent validity of seven commercially available devices for the assessment of movement velocity at different intensities during the bench press, Journal of Strength and Conditioning Research, 33, pp. 1258-1265, (2019); Rhea M.R., Determining the magnitude of treatment effects in strength training research through the use of the effect size, Journal of Strength & Conditioning Research, 18, 4, pp. 918-920, (2004); Rogers S.A., Hassmen P., Hunter A., Alcock A., Crewe S.T., Strauts J.A., Weissensteiner J.R., The validity and reliability of the MyJump2 application to assess vertical jumps in trained junior athletes, Measurement in Physical Education and Exercise Science, 23, 1, pp. 69-77, (2019); Romero-Franco N., Jimenez-Reyes P., Castano-Zambudio A., Capelo-Ramirez F., Rodriguez-Juan J.J., Gonzalez-Hernandez J., Balsalobre-Fernandez C., Sprint performance and mechanical outputs computed with an iPhone app: Comparison with existing reference methods, European Journal of Sport Science, 17, 4, pp. 386-392, (2017); Samozino P., Rabita G., Dorel S., Slawinski J., Peyrot N., Saez de Villarreal E., Morin J.-B., A simple method for measuring power, force, velocity properties, and mechanical effectiveness in sprint running, Scandinavian Journal of Medicine & Science in Sports, (2015); Sheppard J.M., Young W.B., Agility literature review: Classifications, training and testing, Journal of Sports Sciences, 24, 9, pp. 919-932, (2006); Stanton R., Wintour S.-A., Kean C.O., Validity and intra-rater reliability of MyJump app on iPhone 6s in jump performance, Journal of Science and Medicine in Sport, (2016); Turner A., Bishop C., Chavda S., Edwards M., Brazier J., Kilduff L.P., Physical characteristics underpinning lunging and change of direction speed in fencing, Journal of Strength and Conditioning Research, 30, 8, pp. 2235-2241, (2016)","C. Balsalobre-Fernández; Department of Physical Education, Sport and Human Movement, Universidad Autónoma de Madrid, Madrid, C/Fco Tomas y Valiente 3, Cantoblanco, 28049, Spain; email: carlos.balsalobre@icloud.com","","Routledge","02640414","","JSSCE","31272332","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85068593002" "Brown S.R.; Wang H.; Dickin D.C.; Weiss K.J.","Brown, Scott R. (56381786200); Wang, Henry (56323990900); Dickin, D. Clark (15050333900); Weiss, Kaitlyn J. (56381996900)","56381786200; 56323990900; 15050333900; 56381996900","The relationship between leg preference and knee mechanics during sidestepping in collegiate female footballers","2014","Sports Biomechanics","13","4","","351","361","10","23","10.1080/14763141.2014.955047","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84919868742&doi=10.1080%2f14763141.2014.955047&partnerID=40&md5=104c1b88790ddf7d336fd6c17a071053","Biomechanics Laboratory, Ball State University, Muncie, IN, United States; Sports Performance Research Institute New Zealand (SPRINZ), Auckland University of Technology, Auckland, Mairangi Bay, New Zealand","Brown S.R., Biomechanics Laboratory, Ball State University, Muncie, IN, United States, Sports Performance Research Institute New Zealand (SPRINZ), Auckland University of Technology, Auckland, Mairangi Bay, New Zealand; Wang H., Biomechanics Laboratory, Ball State University, Muncie, IN, United States; Dickin D.C., Biomechanics Laboratory, Ball State University, Muncie, IN, United States; Weiss K.J., Biomechanics Laboratory, Ball State University, Muncie, IN, United States, Sports Performance Research Institute New Zealand (SPRINZ), Auckland University of Technology, Auckland, Mairangi Bay, New Zealand","This study examined the relationship between leg preference and knee mechanics in females during sidestepping. Three-dimensional data were recorded on 16 female collegiate footballers during a planned 45° sidestep manoeuvre with their preferred and non-preferred kicking leg. Knee kinematics and kinetics during initial contact, weight acceptance, peak push-off, and final push-off phases of sidestepping were analysed in both legs. The preferred leg showed trivial to small increases (ES = 0.19–0.36) in knee flexion angle at initial contact, weight acceptance, and peak push-off, and small increases (ES = 0.21–0.34) in peak power production and peak knee extension velocity. The non-preferred leg showed a trivial increase (ES = 0.10) in knee abduction angle during weight acceptance; small to moderate increases (ES = 0.22–0.64) in knee internal rotation angle at weight acceptance, peak push-off, and final push-off; a small increase (ES = 0.22) in knee abductor moment; and trivial increases (ES = 0.09–0.14) in peak power absorption and peak knee flexion velocity. The results of this study show that differences do exist between the preferred and non-preferred leg in females. The findings of this study will increase the knowledge base of anterior cruciate ligament injury in females and can aid in the design of more appropriate neuromuscular, plyometric, and strength training protocols for injury prevention. © 2014 Taylor & Francis.","anterior cruciate ligament; injury prevention; knee joint; Soccer","Anterior Cruciate Ligament; Biomechanical Phenomena; Female; Functional Laterality; Humans; Imaging, Three-Dimensional; Knee Joint; Leg; Movement; Soccer; Video Recording; Weight-Bearing; Young Adult; anterior cruciate ligament; biomechanics; female; hemispheric dominance; human; knee; leg; movement (physiology); physiology; soccer; three dimensional imaging; videorecording; weight bearing; young adult","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in National Collegiate Athletic Association basketball and soccer: A 13-year review, The American Journal of Sports Medicine, 33, pp. 524-530, (2005); Agel J., Evans T.A., Dick R., Putukian M., Marshall S.W., Descriptive epidemiology of collegiate men's soccer injuries: National Collegiate Athletic Association Injury Surveillance System, 1988–1989 through 2002–2003, Journal of Athletic Training, 42, pp. 270-277, (2007); Arendt E.A., Agel J., Dick R., Anterior cruciate ligament injury patterns among collegiate men and women, Journal of Athletic Training, 34, pp. 86-92, (1999); Besier T.F., Lloyd D.G., Ackland T.R., Cochrane J.L., Anticipatory effects on knee joint loading during running and cutting maneuvers, Medicine and Science in Sports and Exercise, 33, pp. 1176-1181, (2001); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Medicine and Science in Sports and Exercise, 33, pp. 1168-1175, (2001); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Brophy R.H., Backus S., Kraszewski A.P., Steele B.C., Ma Y., Osei D., Williams R.J., Differences between sexes in lower extremity alignment and muscle activation during soccer kick, Journal of Bone and Joint Surgery, 92, pp. 2050-2058, (2010); Brophy R.H., Backus S.I., Pansy B.S., Lyman S., Williams R.J., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, Journal of Orthopaedic and Sports Physical Therapy, 37, pp. 260-268, (2007); Brophy R.H., Silvers H.J., Gonzales T., Mandelbaum B.R., Gender influences: The role of leg dominance in ACL injury among soccer players, British Journal of Sports Medicine, 44, pp. 694-697, (2010); Dick R., Putukian M., Agel J., Evans T.A., Marshall S.W., Descriptive epidemiology of collegiate women's soccer injuries: National Collegiate Athletic Association Injury Surveillance System, 1988–1989 through 2002–2003, Journal of Athletic Training, 42, pp. 278-285, (2007); Draganich L.F., Vahey J.W., An in vitro study of anterior cruciate ligament strain induced by quadriceps and hamstrings forces, Journal of Orthopaedic Research, 8, pp. 57-63, (1990); Faude O., Junge A., Kindermann W., Dvorak J., Risk factors for injuries in elite female soccer players, British Journal of Sports Medicine, 40, pp. 785-790, (2006); Feagin J.A., Lambert K.L., Mechanism of injury and pathology of anterior cruciate ligament injuries, Orthopedic Clinics of North America, 16, pp. 41-45, (1985); Ferretti A., Papandrea P., Conteduca F., Mariani P.P., Knee ligament injuries in volleyball players, The American Journal of Sports Medicine, 20, pp. 203-207, (1992); Big Count 2006: Statistical Summary Report by Association, (2007); Gwinn D.E., Wilckens J.H., McDevitt E.R., Ross G., Kao T.-C., The relative incidence of anterior cruciate ligament injury in men and women at the United States naval academy, The American Journal of Sports Medicine, 28, pp. 98-102, (2000); Hopkins W.G., Marshall S.W., Batterham A.M., Hanin J., Progressive statistics for studies in sports medicine and exercise science, Medicine and Science in Sports and Exercise, 41, pp. 3-12, (2009); Matava M.J., Freehill A.K., Grutzner S., Shannon W., Limb dominance as a potential etiologic factor in noncontact anterior cruciate ligament tears, Journal of Knee Surgery, 15, pp. 11-16, (2002); McLean S.G., Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: Potential for injury in women, Medicine and Science in Sports and Exercise, 31, pp. 959-968, (1999); McLean S.G., Su A., van den Bogert A.J., Development and validation of a 3-D model to predict knee joint loading during dynamic movement, Journal of Biomechanical Engineering, 125, pp. 864-874, (2003); Negrete R.J., Schick E.A., Cooper J.P., Lower-limb dominance as a possible etiologic factor in noncontact anterior cruciate ligament tears, Journal of Strength and Conditioning Research, 21, pp. 270-273, (2007); Nordin M., Frankel V.H., Basic biomechanics of the musculoskeletal system, (2012); Sigward S.M., Powers C.M., The influence of experience on knee mechanics during side-step cutting in females, Clinical Biomechanics, 21, pp. 740-747, (2006); Wascher D.C., Markolf K.L., Shapiro M.S., Finerman G.A., Direct in vitro measurement of forces in the cruciate ligaments. Part I: The effect of multiplane loading in the intact knee, Journal of Bone and Joint Surgery, 75, pp. 377-386, (1993); Willems T.M., Witvrouw E., Delbaere K., Philippaerts R., De Bourdeaudhuij I., De Clercq D., Intrinsic risk factors for inversion ankle sprains in females - A prospective study, Scandinavian Journal of Medicine and Science in Sports, 15, pp. 336-345, (2005); Winter D.A., Biomechanics and motor control of human movement, (2009); Yu B., Garrett W.E., Mechanisms of non-contact ACL injuries, British Journal of Sports Medicine, 41, pp. i47-i51, (2007); Zebis M.K., Andersen L.L., Bencke J., Kjaer M., Aagaard P., Identification of athletes at future risk of anterior cruciate ligament ruptures by neuromuscular screening, The American Journal of Sports Medicine, 37, pp. 1967-1973, (2009)","","","Routledge","14763141","","","25204331","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-84919868742" "Wang J.; Fu W.","Wang, Junqing (57211091228); Fu, Weijie (38761225100)","57211091228; 38761225100","Asymmetry between the dominant and non-dominant legs in the lower limb biomechanics during single-leg landings in females","2019","Advances in Mechanical Engineering","11","5","","","","","24","10.1177/1687814019849794","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85065570007&doi=10.1177%2f1687814019849794&partnerID=40&md5=dbe2ea62847e8c7e01c580399f9f987c","School of Kinesiology, Shanghai University of Sport, Shanghai, China; Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China","Wang J., School of Kinesiology, Shanghai University of Sport, Shanghai, China; Fu W., School of Kinesiology, Shanghai University of Sport, Shanghai, China, Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China","This study aims to determine the effects of asymmetry on kinematics, kinetics, and changes in the center of pressure of the dominant and non-dominant legs during single-leg landings in female athletes. Fifteen healthy female collegiate soccer players performed dominant and non-dominant single-leg landings from a height of 40 cm. The three-dimensional kinematics and kinetics of the lower extremities were collected simultaneously with a 16-camera motion capture system and one force platform, respectively. Moreover, joint angle, joint range of motion, ground reaction force, joint moment, center-of-pressure, and absolute symmetry index (ASI%) were analyzed. Results corroborated that the range of motion in the knee and hip joints were significantly lower in the non-dominant than in the dominant leg. Meanwhile, the non-dominant leg exhibited higher medial–lateral center-of-pressure displacement than did the dominant leg. In addition, the ASI% for the peak ground reaction force and the loading rate exceeded 10% (peak ground reaction force: 11.31%, loading rate: 19.28%), which indicated asymmetry between the two legs during the single-leg landing impact. The findings also imply that for the female soccer players, the risk of injury (e.g. anterior cruciate ligament injury) can be higher in the non-dominant than in the dominant leg during unilateral dynamic movements. © The Author(s) 2019.","absolute symmetry index; Asymmetry; female; kinematics; unilateral landing","","Amraee D., Alizadeh M.H., Minoonejhad H., Et al., Predictor factors for lower extremity malalignment and non-contact anterior cruciate ligament injuries in male athletes, Knee Surg Sports Traumatol Arthrosc, 25, pp. 1625-1631, (2017); Alentorn-Geli E., Myer G.D., Silvers H.J., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: mechanisms of injury and underlying risk factors, Knee Surg Sports Traumatol Arthrosc, 17, pp. 705-729, (2009); Sommerfeldt M., Raheem A., Whittaker J., Et al., Recurrent instability episodes and meniscal or cartilage damage after anterior cruciate ligament injury: a systematic review, Orthop J Sports Med, 6, (2018); Ajuied A., Wong F., Smith C., Et al., Anterior cruciate ligament injury and radiologic progression of knee osteoarthritis: a systematic review and meta-analysis, Am J Sports Med, 42, pp. 2242-2252, (2014); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Ruedl G., Webhofer M., Helle K., Et al., Leg dominance is a risk factor for noncontact anterior cruciate ligament injuries in female recreational skiers, Am J Sports Med, 40, pp. 1269-1273, (2012); Sadeghi H., Allard P., Prince F., Et al., Symmetry and limb dominance in able-bodied gait: a review, Gait Posture, 12, pp. 34-45, (2000); Delaunay D., Kawaguchi A., Dehay C., Et al., Division modes and physical asymmetry in cerebral cortex progenitors, Curr Opin Neurobiol, 42, pp. 75-83, (2017); Carpes F.P., Mota C.B., Faria I.E., On the bilateral asymmetry during running and cycling—a review considering leg preference, Phys Ther Sport, 11, pp. 136-142, (2010); Laughlin W.A., Weinhandl J.T., Kernozek T.W., Et al., The effects of single-leg landing technique on ACL loading, J Biomech, 44, pp. 1845-1851, (2011); Kipp K., Mclean S.G., Palmieri-Smith R.M., Patterns of hip flexion motion predict frontal and transverse plane knee torques during a single-leg land-and-cut maneuver, Clin Biomech, 26, pp. 504-508, (2011); Edwards S., Steele J.R., Cook J.L., Et al., Lower limb movement symmetry cannot be assumed when investigating the stop-jump landing, Med Sci Sports Exerc, 44, pp. 1123-1130, (2012); Wenxin N., Yang W., Yan H., Et al., Kinematics, kinetics, and electromyogram of ankle during drop landing: a comparison between dominant and non-dominant limb, Hum Mov Sci, 30, pp. 614-623, (2011); Pappas E., Carpes F.P., Lower extremity kinematic asymmetry in male and female athletes performing jump-landing tasks, J Sci Med Sport, 15, pp. 87-92, (2012); Fu W., Fang Y., Gu Y., Et al., Shoe cushioning reduces impact and muscle activation during landings from unexpected, but not self-initiated, drops, J Sci Med Sport, 20, pp. 915-920, (2017); Jordan M.J., Aagaard P., Herzog W., A comparison of lower limb stiffness and mechanical muscle function in ACL-reconstructed, elite, and adolescent alpine ski racers/ski cross athletes, J Sport Health Sci, 7, pp. 416-424, (2018); Bjorklund G., Alricsson M., Svantesson U., Using bilateral functional and anthropometric tests to define symmetry in cross-country skiers, J Hum Kinet, 60, pp. 9-18, (2017); Herzog W., Nigg B.M., Read L.J., Et al., Asymmetries in ground reaction force patterns in normal human gait, Med Sci Sports Exerc, 21, pp. 110-114, (1989); Bosch K., Rosenbaum D., Gait symmetry improves in childhood—a 4-year follow-up of foot loading data, Gait Posture, 32, pp. 464-468, (2010); Zech A., Klahn P., Hoeft J., Et al., Time course and dimensions of postural control changes following neuromuscular training in youth field hockey athletes, Eur J Appl Physiol, 114, pp. 395-403, (2014); Ross S., Guskiewicz K., Prentice W., Et al., Comparison of biomechanical factors between the kicking and stance limbs, J Sport Rehabil, 13, pp. 135-150, (2004); Brown T.N., O'Donovan M., Hasselquist L., Et al., Lower limb flexion posture relates to energy absorption during drop landings with soldier-relevant body borne loads, Appl Ergon, 52, pp. 54-61, (2016); Zhang S.N., Bates B.T., Dufek J.S., Contributions of lower extremity joints to energy dissipation during landings, Med Sci Sports Exerc, 32, pp. 812-819, (2000); Hunter S.K., Thompson M.W., Adams R.D., Relationships among age-associated strength changes and physical activity level, limb dominance, and muscle group in women, J Gerontol A Biol Sci Med Sci, 55, (2000); Myer G.D., Ford K.R., Barber Foss K.D., Et al., The relationship of hamstrings and quadriceps strength to anterior cruciate ligament injury in female athletes, Clin J Sport Med, 19, pp. 3-8, (2009); Ali N., Robertson D.G.E., Rouhi G., Sagittal plane body kinematics and kinetics during single-leg landing from increasing vertical heights and horizontal distances: implications for risk of non-contact ACL injury, Knee, 21, pp. 38-46, (2014); Durall C.J., Kernozek T.W., Melissa K., Et al., Associations between single-leg postural control and drop-landing mechanics in healthy women, J Sport Rehabil, 20, pp. 406-418, (2011); Pau M., Porta M., Arippa F., Et al., Dynamic postural stability, is associated with competitive level, in youth league soccer players, Phys Ther Sport, 35, pp. 36-41, (2019); Romero-Franco N., Martinez-Lopez E.J., Hita-Contreras F., Et al., Effects of an anaerobic lactic training session on the postural stability of athletes, J Sports Med Phys Fitness, 55, pp. 578-586, (2015); Dingenen B., Malfait B., Nijs S., Et al., Postural stability during single-leg stance: a preliminary evaluation of noncontact lower extremity injury risk, J Orthop Sports Phys Ther, 46, pp. 650-657, (2016); Martinez-Amat A., Hita-Contreras F., Lomas-Vega R., Et al., Effects of 12-week proprioception training program on postural stability, gait, and balance in older adults: a controlled clinical trial, J Strength Cond Res, 27, pp. 2180-2188, (2013); Wikstrom E.A., Tillman M.D., Kline K.J., Et al., Gender and limb differences in dynamic postural stability during landing, Clin J Sport Med, 16, pp. 311-315, (2006); Hewett T.E., Myer G.D., Ford K.R., Anterior cruciate ligament injuries in female athletes: part 1, mechanisms and risk factors, Am J Sports Med, 34, pp. 299-311, (2006); Leporace G., Pereira G.R., Nadal J., Et al., Differences in time–frequency representation of lower limbs myoelectric activity during single and double leg landing in male athletes, J Electromyogr Kinesiol, 21, pp. 506-511, (2011); Mokhtarzadeh H., Ewing K., Janssen I., Et al., The effect of leg dominance and landing height on ACL loading among female athletes, J Biomech, 60, pp. 181-187, (2017); Yeow C.H., Lee P.V., Goh J.C., An investigation of lower extremity energy dissipation strategies during single-leg and double-leg landing based on sagittal and frontal plane biomechanics, Hum Mov Sci, 30, pp. 624-635, (2011); Milner C.E., Fairbrother J.T., Srivatsan A., Et al., Simple verbal instruction improves knee biomechanics during landing in female athletes, Knee, 19, pp. 399-403, (2012); Puddle D.L., Maulder P.S., Ground reaction forces and loading rates associated with parkour and traditional drop landing techniques, J Sports Sci Med, 12, pp. 122-129, (2013); Odd-Egil O., Grethe M., Lars E., Et al., Injury mechanisms for anterior cruciate ligament injuries in team handball: a systematic video analysis, Am J Sports Med, 32, pp. 1002-1012, (2004)","W. Fu; School of Kinesiology, Shanghai University of Sport, Shanghai, China; email: fuweijie315@163.com","","SAGE Publications Inc.","16878132","","","","English","Adv. Mech. Eng.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85065570007" "Sterzing T.; Müller C.; Milani T.L.","Sterzing, Thorsten (23986270100); Müller, Clemens (55728101900); Milani, Thomas L. (6603851133)","23986270100; 55728101900; 6603851133","Traction on artificial turf: Development of a soccer shoe outsole","2010","Footwear Science","2","1","","37","49","12","19","10.1080/19424281003685678","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79958257111&doi=10.1080%2f19424281003685678&partnerID=40&md5=a5b0c0f6babf8edf37e8168384090139","Human Locomotion, Chemnitz University of Technology, Chemnitz 09126, Thüringer Weg 11, Germany","Sterzing T., Human Locomotion, Chemnitz University of Technology, Chemnitz 09126, Thüringer Weg 11, Germany; Müller C., Human Locomotion, Chemnitz University of Technology, Chemnitz 09126, Thüringer Weg 11, Germany; Milani T.L., Human Locomotion, Chemnitz University of Technology, Chemnitz 09126, Thüringer Weg 11, Germany","Purpose: Official game play on high quality third-generation artificial soccer turf was approved by the FIFA already in 2004. However, it is still unknown how the 'new' surface affects traction requirements and thus potentially calls for specific footwear, especially with respect to the shoe outsole. This research project aimed to develop an artificial soccer turf outsole that provides very good traction performance to players. Methods: The whole project consisted of three phases that were carried out over three years: (I) status quo evaluation, (II) modified prototype testing, and (III) market comparison. In each phase an identical, comprehensive testing design, incorporating performance, perception and biomechanical testing procedures, was applied on FIFA 2-star artificial soccer turf. Four different shoe models were comparatively examined in each research phase and respective findings guided the selection of shoes for the following phase. Results: Soccer shoes that were traditionally designed for playing on natural grass were not (soft ground) or only limitedly (firm ground) suited for playing on artificial turf. Better traction performance on artificial soccer turf was achieved by usage of multiple and rather low studs being evenly distributed across the rearfoot and the forefoot areas. The final prototype shoe outperformed three commercially available artificial turf soccer shoes on the market at time of testing. Conclusion: This research provides an improved understanding of the mechanisms of artificial soccer shoe traction. Solid recommendations for the requirements of artificial soccer turf outsoles are stated, which generally confirm players' intuitive choice of soccer footwear. © 2010 Taylor & Francis.","Artificial turf; Biomechanics; Football; Perception; Performance; Soccer shoe; Traction","Biomechanics; Commerce; Electric traction; Sensory perception; Traction (friction); Artificial turfs; Biomechanical testing; Comprehensive testing; Market comparison; Performance; Prototype testing; Third generation; Traction performance; Football","Arnason A., Et al., Soccer injuries in Iceland, Scandinavian Journal of Medicine & Science in Sports, 6, 1, pp. 40-45, (1996); Brauner T., Et al., Small changes in the varus alignment of running shoes allow gradual pronation control, Footwear Science, 1, 2, pp. 103-110, (2009); Coyles V.R., Lake M.J., Patritti B.L., Comparative evaluation of soccer boot traction during cutting maneuvers-methodological considerations for field testing, The Engineering in Sport, pp. 183-190, (1998); Ekstrand J., Timpka T., Hagglund M., Risk of injury in elite football played on artificial turf versus natural grass: Prospective two-cohort study, British Journal of Sports Medicine, 40, 12, pp. 975-980, (2006); Engebretsen L., Kase T., Soccer injuries and artificial turf, Tidsskr Nor Laegeforen, 107, pp. 2215-2217, (1987); (2009); (2009); (2009); (2009); FIFA quality concept for artificial turf. Handbook of requirements, (2009); FIFA quality concept for artificial turf. Handbook of test methods, (2009); Laws of the game 2009-10, (2009); Artificial turf, (2009); Fong D.T.P., Hong Y., Li J.X., Human walks carefully when the ground dynamic coefficient of friction drops below 0.41, Safety Science, 47, 10, pp. 1429-1433, (2009); Fuller C.W., Et al., Comparison of the incidence, nature and cause of injuries sustained on grass and new generation artificial turf by male and female football players. Part 1: Match injuries, British Journal of Sports Medicine, 41, SUPPL I, pp. 20-26, (2007); Fuller C.W., Et al., Comparison of the incidence, nature and cause of injuries sustained on grass and new generation artificial turf by male and female football players. Part 2: Training injuries, British Journal of Sports Medicine, 41, SUPPL I, pp. 27-32, (2007); Hennig E.M., Milani T.L., Testmethoden zur Beurteilung von Laufschuhen, Dynamed, 1, 1, pp. 33-35, (1996); Krahenbuhl G.S., Speed of movement with varying footwear conditions on synthetic turf and natural grass, The Research Quarterly, 45, 1, pp. 28-33, (1974); Kunz A., Analyse des Spielverhaltens auf Kunstrasen im Vergleich zu Naturrasen im Fußball, (2009); Lafortune M., Measurement and interpretation of biomechanical, perceptual and mechanical variables, Proceedings 1. Simpósio Brasileiro de Biomecânica do Calcado, Sociedade Brasileira De Biomecânica, pp. 17-19, (2001); Lake M., Determining the protective function of sports footwear, Ergonomics, 43, 10, pp. 1610-1621, (2000); Lambson R.B., Barnhill B.S., Higgins R.W., Football cleat design and its effect on anterior cruciate ligament injuries, The American Journal of Sports Medicine, 24, 2, pp. 155-159, (1996); Lees A., The biomechanics of soccer surfaces and equipment, Science and Soccer, pp. 135-150, (1996); Lees A., Lake M., The biomechanics of soccer surfaces and equipment, Science and Soccer II, pp. 120-135, (2003); Levy M., Skovron M.L., Agel J., Living with artificial grass: A knowledge update Part 1: Basic science, The American Journal of Sports Medicine, 18, 4, pp. 406-412, (1990); Morag E., Johnson D., Traction requirements of young soccer players, Proceedings 5. Symposium on Footwear Biomechanics. Zurich, pp. 62-63, (2001); Muller C., Sterzing T., Milani T.L., Lake M., Influence of different stud configurations on lower extremity kinematics and kinetics during a soccer turning movement, Footwear Science, 1, S1, pp. 82-83, (2009); Muller C., Sterzing T., Milani T.L., Stud length and stud geometry of soccer boots influence running performance on third generation artificial turf, 27. Symposium of the International Society of Biomechanics in Sports, pp. 811-814, (2009); Product testing and sensory evaluation, Sport Research Review, (2003); Park S.K., Et al., The influence of soccer cleat design on ankle joint moments, 7. Symposium on Footwear Biomechanics, pp. 126-127, (2005); Rodano R., Cova P., Vigano R., Designing a football boot: A theoretical and experimental approach, Science and Football, pp. 416-425, (1988); Steffen K., Andersen T.E., Bahr R., Risk of injury on artificial turf and natural grass in young female football players, British Journal of Sports Medicine, 41, SUPPL I, pp. 33-37, (2007); Sterzing T., Hennig E.M., Stability in soccer shoes: The relationship between perception of stability and biomechanical parameters, Science and Football V, pp. 21-27, (2005); Sterzing T., Hennig E.M., The influence of soccer shoes on kicking velocity in full instep soccer kicks, Exercise and Sport Sciences Reviews, 36, 2, pp. 91-97, (2008); Sterzing T., Hennig E.M., Milani T.L., Biomechanical requirements of soccer shoe construction, Orthopädie Technik, 58, 9, pp. 646-655, (2007); Sterzing T., Et al., Discrepancies between mechanical and biomechanical measurements of soccer shoe traction on artificial turf, 26. Symposium of the International Society of Biomechanics in Sports, pp. 339-342, (2008); Sterzing T., Et al., Actual and perceived running performance in soccer shoes: A series of eight studies, Footwear Science, 1, 1, pp. 5-17, (2009); Valiant G.A., Ground reaction forces developed on artificial turf, Science and Football, pp. 406-415, (1988); Yeadon M.R., Kato T., Kerwin D.G., Measuring running speed using photocells, Journal of Sports Science, 17, 3, pp. 249-257, (1999)","T. Sterzing; Human Locomotion, Chemnitz University of Technology, Chemnitz 09126, Thüringer Weg 11, Germany; email: thorsten.sterzing@hsw.tu-chemnitz.de","","Taylor and Francis Ltd.","19424280","","","","English","Footwear Sci.","Article","Final","","Scopus","2-s2.0-79958257111" "Linthorne N.P.; Everett D.J.","Linthorne, Nicholas P. (8682074600); Everett, David J. (23496372100)","8682074600; 23496372100","Release angle for attaining maximum distance in the soccer throw-in","2006","Sports Biomechanics","5","2","","243","260","17","17","10.1080/14763140608522877","https://www.scopus.com/inward/record.uri?eid=2-s2.0-39049188230&doi=10.1080%2f14763140608522877&partnerID=40&md5=6939bca79e60b4cc15672b426bbc7799","School of Sport and Education, Brunei University, Middlesex, United Kingdom","Linthorne N.P., School of Sport and Education, Brunei University, Middlesex, United Kingdom; Everett D.J., School of Sport and Education, Brunei University, Middlesex, United Kingdom","We investigated the release angle that maximizes the distance attained in a long soccer throw-in. One male soccer player performed maximum-effort throws using release angles of between 10 and 60°, and the throws were analyzed using two-dimensional videography. The player's optimum release angle was calculated by substituting mathematical expressions for the measured relationships between release speed, release height and release angle into the equations for the flight of a spherical projectile. We found that the musculoskeletal structure of the player's body had a strong influence on the optimum release angle. When using low release angles the player released the ball with a greater release speed and, because the range of a projectile is strongly dependent on the release speed, this bias toward low release angles reduced the optimum release angle to about 30°. Calculations showed that the distance of a throw may be increased by a few metres by launching the ball with a fast backspin, but the ball must be launched at a slightly lower release angle.","Biomechanics; Projectile; Release angle; Soccer; Throw-in","Adult; Arm; Biomechanics; Humans; Male; Movement; Muscle Contraction; Muscle, Skeletal; Soccer; Sports; Stress, Mechanical; Task Performance and Analysis; Video Recording; adult; arm; article; biomechanics; human; male; mechanical stress; methodology; movement (physiology); muscle contraction; physiology; skeletal muscle; sport; statistics; task performance; videorecording","Bray K., Kerwin D.G., Modelling the long soccer throw-in using aerodynamic lift and drag, The Engineering of Sport, 5, pp. 56-62, (2004); Carre M.J., Asai T., Akatsuka T., Haake S.J., The curve kick of a football II: Flight through the air, Sports Engineering, 5, pp. 193-200, (2002); de Mestre N., The Mathematics of Projectiles in Sport, (1990); Laws of the Game 2004, (2004); Hubbard M., The flight of sports projectiles, Biomechanics in Sport, pp. 381-400, (2000); Kerwin D.G., Bray K., Quantifying the trajectory of the long soccer throw-in, The Engineering of Sport, 5, pp. 63-69, (2004); Kollath E., Schwirtz A., Biomechanical analysis of the soccer throw-in, Science and Football, pp. 460-467, (1988); Linthorne N.P., Optimum release angle in the shot put, Journal of Sports Sciences, 19, pp. 359-372, (2001); Linthorne N.P., Guzman M.S., Bridgett L.A., Optimum take-off angle in the long jump, Journal of Sports Sciences, 23, pp. 703-712, (2005); Messier S.P., Brody M.A., Mechanics of translation and rotation during conventional and handspring soccer throw-ins, International Journal of Sport Biomechanics, 2, pp. 301-315, (1986); Press W.H., Flannery B.P., Teukolsky S.A., Vetterling W.T., Numerical Recipes in C: The Art of Scientific Computing, (1988); Red W.E., Zogaib A.J., Javelin dynamics including body interaction, Journal of Applied Mechanics, 44, pp. 496-498, (1977); Smits A.J., Smith D.R., A new aerodynamic model of a golf ball in flight, Science and Golf II: Proceedings of the 1994 World Scientific Congress of Golf, pp. 340-347, (1994); van den Tillaar R., Ettema G., A force-velocity relationship and coordination patterns in overarm throwing, Journal of Sports Science and Medicine, 3, pp. 211-219, (2004); Wakai M., Linthorne N.P., Optimum takeoff angle in the standing long jump, Human Movement Science, 24, pp. 81-96, (2005); Winter D.A., Biomechanics and Motor Control of Human Movement, (1990)","","","","17526116","","","16939156","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-39049188230" "Finocchietti S.; Gori M.; Souza Oliveira A.","Finocchietti, Sara (36135330800); Gori, Monica (23491803400); Souza Oliveira, Anderson (25925906100)","36135330800; 23491803400; 25925906100","Kinematic Profile of Visually Impaired Football Players During Specific Sports Actions","2019","Scientific Reports","9","1","10660","","","","17","10.1038/s41598-019-47162-z","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85069648426&doi=10.1038%2fs41598-019-47162-z&partnerID=40&md5=686cef0e41c5627c8877d10a485188ef","U-VIP: Unit for Visually Impaired People, Fondazione Istituto Italiano di Tecnologia, Genova, Italy; Department of Materials and Production, Aalborg University, Aalborg, Denmark","Finocchietti S., U-VIP: Unit for Visually Impaired People, Fondazione Istituto Italiano di Tecnologia, Genova, Italy; Gori M., U-VIP: Unit for Visually Impaired People, Fondazione Istituto Italiano di Tecnologia, Genova, Italy; Souza Oliveira A., Department of Materials and Production, Aalborg University, Aalborg, Denmark","Blind football, or Football 5-a-side, is a very popular sport amongst visually impaired individuals (VI) worldwide. However, little is known regarding the movement patterns these players perform in sports actions. Therefore, the aim of this study was to determine whether visually impaired players present changes in their movement patterns in specific functional tasks compared with sighted amateur football players. Six VI and eight sighted amateur football players performed two functional tasks: (1) 5 m shuttle test and (2) 60 s ball passing against a wall. The sighted players performed the tests while fully sighted (SIG) as well as blindfolded (BFO). During both tasks, full-body kinematics was recorded using an inertial motion capture system. The maximal center-of-mass speed and turning center-of-mass speed were computed during the 5 m shuttle test. Foot resultant speed, bilateral arm speed, and trunk flexion were measured during the 60 s ball passing test. The results showed that VI players achieved lower maximal and turning speed compared to SIG players (p < 0.05), but BFO were slower than the VI players. The VI players presented similar foot contact speed during passes when compared to SIG, but they presented greater arm movement speed (p < 0.05) compared to both SIG and BFO. In addition, VI players presented greater trunk flexion angles while passing when compared to both SIG and BFO (p < 0.05). It is concluded that VI players present slower speed while running and turning, and they adopt specific adaptations from arm movements and trunk flexion to perform passes. © 2019, The Author(s).","","Adult; Athletic Performance; Biomechanical Phenomena; Blindness; Humans; Male; Running; Soccer; Visually Impaired Persons; adult; athletic performance; biomechanics; blindness; human; male; pathophysiology; physiology; running; soccer; visually impaired person","Koerte I.K., Et al., Cortical thinning in former professional soccer players, Brain Imaging Behav., 10, pp. 792-798, (2016); Velten M.C.C., Ugrinowitsch H., Portes L.L., Hermann T., Blasing B., Auditory spatial concepts in blind football experts, Psychol. Sport Exerc., 22, pp. 218-228, (2016); Magno e Silva M.P., Morato M.P., Bilzon J.L.J., Duarte E., Sports injuries in Brazilian blind footballers, Int. J. Sports Med., 34, pp. 239-243, (2013); Gamonales Puerto J.M., Munoz Jimenez J., Leon Guzman K., Ibanez Godoy S.J., Efficacy of shots on goal in football for the visually impaired, Int. J. Perform. Anal. Sport, 18, pp. 393-409, (2018); Blickenstaff B.A., Sport on the Edge: How Much Soccer Is Too Much Soccer? Vice Sports, (2015); Tak I.J.R., Hip and groin pain in athletes: morphology, function and injury from a clinical perspective, British Journal of Sports Medicine, 52, 16, pp. 1024-1025, (2018); Vieira L.H.P., Et al., Kicking Performance in Young U9 to U20 Soccer Players: Assessment of Velocity and Accuracy Simultaneously, Res. Q. Exerc. Sport, 89, pp. 210-220, (2018); da Silva E.S., Et al., Gait and functionality of individuals with visual impairment who participate in sports, Gait Posture, 62, pp. 355-358, (2018); Finocchietti S., Cappagli G., Gori M., Auditory Spatial Recalibration in Congenital Blind Individuals, Front. Neurosci., 11, (2017); Gori M., Sandini G., Martinoli C., Burr D.C., Impairment of auditory spatial localization in congenitally blind human subjects, Brain, 137, pp. 288-293, (2014); Gori M., Amadeo M.B., Campus C., Temporal Cues Influence Space Estimations in Visually Impaired Individuals, iScience, 6, pp. 319-326, (2018); van Dieen J.H., van Leeuwen M., Faber G.S., Learning to balance on one leg: motor strategy and sensory weighting, J. Neurophysiol., 114, pp. 2967-2982, (2015); Karatsidis A., Et al., Estimation of Ground Reaction Forces and Moments During Gait Using Only Inertial Motion Capture, Sensors, 17, (2016); Fleron M.K., Ubbesen N.C.H., Battistella F., Dejtiar D.L., Oliveira A.S., Accuracy between optical and inertial motion capture systems for assessing trunk speed during preferred gait and transition periods, Sports Biomechanics, 18, 4, pp. 366-377, (2018); Boddington M.K., Lambert M.I., Waldeck M.R., Validity of a 5-meter multiple shuttle run test for assessing fitness of women field hockey players, J. Strength Cond. Res., 18, (2004); Svenningsen F.P., de Zee M., Oliveira A.S., The effect of shoe and floor characteristics on walking kinematics, Hum. Mov. Sci., 66, pp. 63-72, (2019); Roetenberg D., Luinge H.J., Baten C.T.M., Veltink P.H., Compensation of magnetic disturbances improves inertial and magnetic sensing of human body segment orientation, IEEE Trans. Neural Syst. Rehabil. Eng., 13, pp. 395-405, (2005); Kobayashi Y., Takashima T., Hayashi M., Fujimoto H., Gait Analysis of People Walking on Tactile Ground Surface Indicators, IEEE Trans. Neural Syst. Rehabil. Eng., 13, pp. 53-59, (2005); McGowan H.E., The Kinematic Analysis of the Walking Gait of Congenitally Blind and Sightedchildren: Ages 6–10 Years, (1984); Hallemans A., Ortibus E., Meire F., Aerts P., Low vision affects dynamic stability of gait, Gait Posture, 32, pp. 547-551, (2010); Nakamura T., Quantitative analysis of gait in the visually impaired, Disabil. Rehabil., 19, pp. 194-197, (1997); Gori M., Cappagli G., Baud-Bovy G., Finocchietti S., Shape Perception and Navigation in Blind Adults, Front. Psychol., 8, (2017); Arnhold R.W., McGrain P., Selected Kinematic Patterns of Visually Impaired Youth in Sprint Running, Adapt. Phys. Act. 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Souza Oliveira; Department of Materials and Production, Aalborg University, Aalborg, Denmark; email: oliveira@mp.aau.dk","","Nature Publishing Group","20452322","","","31337849","English","Sci. Rep.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85069648426" "Harper L.D.; Field A.; Corr L.D.; Naughton R.J.","Harper, Liam D. (56400407900); Field, Adam (57212506999); Corr, Liam D. (57214750098); Naughton, Robert J. (56520033900)","56400407900; 57212506999; 57214750098; 56520033900","The physiological, physical, and biomechanical demands of walking football: Implications for exercise prescription and future research in older adults","2020","Journal of Aging and Physical Activity","28","3","","478","488","10","19","10.1123/JAPA.2019-0330","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85089105746&doi=10.1123%2fJAPA.2019-0330&partnerID=40&md5=b108279f2e56aac5a4dedd89b86f92cf","School of Human and Health Sciences, University of Huddersfield, Huddersfield, West Yorkshire, United Kingdom","Harper L.D., School of Human and Health Sciences, University of Huddersfield, Huddersfield, West Yorkshire, United Kingdom; Field A., School of Human and Health Sciences, University of Huddersfield, Huddersfield, West Yorkshire, United Kingdom; Corr L.D., School of Human and Health Sciences, University of Huddersfield, Huddersfield, West Yorkshire, United Kingdom; Naughton R.J., School of Human and Health Sciences, University of Huddersfield, Huddersfield, West Yorkshire, United Kingdom","The aim of this investigation was to profile the physiological, physical, and biomechanical responses during walking football. A total of 17 male participants (aged 66 ± 6 years) participated. Heart rate; blood lactate; accelerometer variables (biomechanical load [PlayerLoad.], changes of direction); and rating of perceived exertion were measured. Participants mean percentage of maximum heart rate was 76 ± 6%during the sessions, with rating of perceived exertion across all sessions at 13 ± 2. Blood lactate increased by ∼157% from presession (1.24 ± 0.4 mmol/L) to postsession (3.19 ± 1.7 mmol/L; p ≤ .0005). PlayerLoad. values of 353 ± 67 arbitrary units were observed, as well as ∼100 changes of direction per session. In conclusion, walking football is a moderate- to vigorous-intensity activity. The longitudinal health benefits of walking football remain to be elucidated, particularly on bone health, cardiovascular fitness, and social and mental well-being. © 2020 Human Kinetics, Inc.","Elderly; Exercise intensity; Gerontology; Physical activity; Soccer","","Abt G., Bray J., Myers T., Benson A.C., Walking cadence required to elicit criterion moderate-intensity physical activity is moderated by fitness status, Journal of Sports Sciences, 37, 17, pp. 1989-1995, (2019); Arnold J.T., Bruce-Low S., Sammut L., The impact of 12 weeks walking football on health and fitness in males over 50 years of age, BMJ Open Sport & Exercise Medicine, 1, 1, (2015); Atkinson G., Nevill A.M., Statistical methods for assessing measurement error (reliability) in variables relevant to sports medicine, Sports Medicine, 26, 4, pp. 217-238, (1998); Bangsbo J., Hansen P.R., Dvorak J., Krustrup P., Recreational football for disease prevention and treatment in untrained men: A narrative review examining cardiovascular health, lipid profile, body composition, muscle strength and functional capacity, British Journal of Sports Medicine, 49, 9, pp. 568-576, (2015); 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Palombaro K.M., Effects of walking-only interventions on bone mineral density at various skeletal sites: A meta-analysis, Journal of Geriatric Physical Therapy, 28, 3, pp. 102-107, (2005); Pringle A., Zwolinsky S., McKenna J., Daly-Smith A., Robertson S., White A., Delivering men's health interventions in English Premier League football clubs: Key design characteristics, Public Health, 127, 8, pp. 716-726, (2013); Randers M.B., Nielsen J.J., Bangsbo J., Krustrup P., Physiological response and activity profile in recreational smallsided football: No effect of the number of players: Organizing effective recreational football, Scandinavian Journal of Medicine & Science in Sports, 24, pp. 130-137, (2014); Randers M.B., Nybo L., Petersen J., Nielsen J.J., Christiansen L., Bendiksen M., Krustrup P., Activity profile and physiological response to football training for untrained males and females, elderly and youngsters: Influence of the number of players: Physical demands of recreational football, Scandinavian Journal of Medicine &Science in Sports, 20, pp. 14-23, (2010); 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Walking cadence (steps/min) as a practical estimate of intensity in adults: a narrative review, British Journal of Sports Medicine, 52, 12, pp. 776-788, (2018); Turner C.H., Robling A.G., Designing exercise regimens to increase bone strength, Exercise and Sport Sciences Reviews, 31, 1, pp. 45-50, (2003); Weerdesteyn V., Rijken H., Geurts A.C.H., Smits-Engelsman B.C.M., Mulder T., Duysens J., A five-week exercise program can reduce falls and improve obstacle avoidance in the elderly, Gerontology, 52, 3, pp. 131-141, (2006); White A.D., Macfarlane N.G., Analysis of international competition and training in men's field hockey by global positioning system and inertial sensor technology, Journal of Strength and Conditioning Research, 29, 1, pp. 137-143, (2015); Wyckelsma V.L., Levinger I., McKenna M.J., Formosa L.E., Ryan M.T., Petersen A.C., Murphy R.M., Preservation of skeletal muscle mitochondrial content in older adults: Relationship between mitochondria, fibre type and high-intensity exercise training: High-intensity training in elderly humans, The Journal of Physiology, 595, 11, pp. 3345-3359, (2017); Wyke S., Bunn C., Andersen E., Silva M.N., van Nassau F., McSkimming P., van der Ploeg H.P., The effect of a programme to improve men's sedentary time and physical activity: The European Fans in Training (EuroFIT) randomised controlled trial, PLOS Medicine, 16, 2, (2019)","L.D. Harper; School of Human and Health Sciences, University of Huddersfield, Huddersfield, West Yorkshire, United Kingdom; email: L.Harper@hud.ac.uk","","Human Kinetics Publishers Inc.","10638652","","JAPAF","31825890","English","J. Aging Phys. Act.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85089105746" "Duclos C.; Miéville C.; Gagnon D.; Leclerc C.","Duclos, Cyril (21741855100); Miéville, Carole (55220879700); Gagnon, Dany (8278610500); Leclerc, Catherine (55220984000)","21741855100; 55220879700; 8278610500; 55220984000","Dynamic stability requirements during gait and standing exergames on the wii fit system in the elderly","2012","Journal of NeuroEngineering and Rehabilitation","9","1","28","","","","24","10.1186/1743-0003-9-28","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84861155483&doi=10.1186%2f1743-0003-9-28&partnerID=40&md5=21c8c67f15dc90576accc03f3bb064a6","Pathokinesiology Laboratory, Centre for Interdisciplinary Research in Rehabilitation (CRIR), Institut de Réadaptation Gingras-Lindsay-de-Montréal (IRGLM), Montréal, QC H3S 2J4, 6300 avenue Darlington, Canada; School of Rehabilitation, Université de Montreal, Montréal, QC H3N 1X7, 7077, avenue du Parc, Canada","Duclos C., Pathokinesiology Laboratory, Centre for Interdisciplinary Research in Rehabilitation (CRIR), Institut de Réadaptation Gingras-Lindsay-de-Montréal (IRGLM), Montréal, QC H3S 2J4, 6300 avenue Darlington, Canada, School of Rehabilitation, Université de Montreal, Montréal, QC H3N 1X7, 7077, avenue du Parc, Canada; Miéville C., Pathokinesiology Laboratory, Centre for Interdisciplinary Research in Rehabilitation (CRIR), Institut de Réadaptation Gingras-Lindsay-de-Montréal (IRGLM), Montréal, QC H3S 2J4, 6300 avenue Darlington, Canada, School of Rehabilitation, Université de Montreal, Montréal, QC H3N 1X7, 7077, avenue du Parc, Canada; Gagnon D., Pathokinesiology Laboratory, Centre for Interdisciplinary Research in Rehabilitation (CRIR), Institut de Réadaptation Gingras-Lindsay-de-Montréal (IRGLM), Montréal, QC H3S 2J4, 6300 avenue Darlington, Canada, School of Rehabilitation, Université de Montreal, Montréal, QC H3N 1X7, 7077, avenue du Parc, Canada; Leclerc C., Pathokinesiology Laboratory, Centre for Interdisciplinary Research in Rehabilitation (CRIR), Institut de Réadaptation Gingras-Lindsay-de-Montréal (IRGLM), Montréal, QC H3S 2J4, 6300 avenue Darlington, Canada, School of Rehabilitation, Université de Montreal, Montréal, QC H3N 1X7, 7077, avenue du Parc, Canada","Background: In rehabilitation, training intensity is usually adapted to optimize the trained system to attain better performance (overload principle). However, in balance rehabilitation, the level of intensity required during training exercises to optimize improvement in balance has rarely been studied, probably due to the difficulty in quantifying the stability level during these exercises. The goal of the present study was to test whether the stabilizing/ destabilizing forces model could be used to analyze how stability is challenged during several exergames, that are more and more used in balance rehabilitation, and a dynamic functional task, such as gait. Methods: Seven healthy older adults were evaluated with three-dimensional motion analysis during gait at natural and fast speed, and during three balance exergames (50/50 Challenge, Ski Slalom and Soccer). Mean and extreme values for stabilizing force, destabilizing force and the ratio of the two forces (stability index) were computed from kinematic and kinetic data to determine the mean and least level of dynamic, postural and overall balance stability, respectively. Results: Mean postural stability was lower (lower mean destabilizing force) during the 50/50 Challenge game than during all the other tasks, but peak postural instability moments were less challenging during this game than during any of the other tasks, as shown by the minimum destabilizing force values. Dynamic stability was progressively more challenged (higher mean and maximum stabilizing force) from the 50/50 Challenge to the Soccer and Slalom games, to the natural gait speed task and to the fast gait speed task, increasing the overall stability difficulty (mean and minimum stability index) in the same manner. Conclusions: The stabilizing/destabilizing forces model can be used to rate the level of balance requirements during different tasks such as gait or exergames. The results of our study showed that postural stability did not differ much between the evaluated tasks (except for the 50/50 Challenge), compared to dynamic stability, which was significantly less challenged during the games than during the functional tasks. Games with greater centre of mass displacements and changes in the base of support are likely to stimulate balance control enough to see improvements in balance during dynamic functional tasks, and could be tested in pathological populations with the approach used here. © 2012 Duclos et al.; licensee BioMed Central Ltd.","Aging; Biomechanics; Dynamic balance; Equilibrium; Human","Aged; Exercise; Exercise Therapy; Female; Gait; Humans; Male; Postural Balance; User-Computer Interface; aged; article; body equilibrium; computer interface; exercise; female; gait; human; kinesiotherapy; male; methodology; physiology","Gillespie L.D., Robertson M.C., Gillespie W.J., Lamb S.E., Gates S., Cumming R.G., Rowe B.H., Interventions for preventing falls in older people living in the community, Cochrane Database of Systematic Reviews, 2, (2009); English C.K., Hillier S.L., Circuit class therapy for improving mobility after stroke, Cochrane Database of Systematic Reviews, (2010); American College of Sports Medicine position stand. Progression models in resistance training for healthy adults, Med Sci Sports & Exer, 41, pp. 687-708, (2009); Mansfield A., Peters A.L., Liu B.A., Maki B.E., A perturbation-based balance training program for older adults: Study protocol for a randomised controlled trial, BMC Geriatrics, 7, (2007); Mansfield A., Peters A.L., Liu B.A., Maki B.E., Effect of a perturbation-based balance training program on compensatory stepping and grasping reactions in older adults: A randomized controlled trial, Phys Ther, 90, pp. 476-491, (2010); Rao S.S., Prevention of falls in older patients, Am Fam Physician, 72, pp. 81-88, (2005); Coutinho E.S.F., Bloch K.V., Rodrigues L.C., Characteristics and circumstances of falls leading to severe fractures in elderly people in Rio de Janeiro, Brazil, Cadernos de Saúde Pública., 25, pp. 455-459, (2009); Talbot L.A., Musiol R.J., Witham E.K., Metter E.J., Falls in young, middle-aged and older community dwelling adults: Perceived cause, environmental factors and injury, BMC Public Health, 5, (2005); Gill T.M., Williams C.S., Tinetti M.E., Environmental hazards and the risk of nonsyncopal falls in the homes of community-living older persons, Medical Care., 38, pp. 1174-1183, (2000); Duclos C., Desjardins P., Nadeau S., Delisle A., Gravel D., Brouwer B., Corriveau H., Destabilizing and stabilizing forces to assess equilibrium during everyday activities, J Biomech, 42, pp. 379-382, (2009); Massion J., Alexandrov A., Frolov A., Why and how are posture and movement coordinated?, Progress in Brain Research, 143, pp. 13-27, (2004); Horak F.B., Postural orientation and equilibrium: What do we need to know about neural control of balance to prevent falls?, Age and Ageing, 35, SUPPL.2, (2006); Gurfinkel V.S., Ivanenko Y.P., Levik Y.S., Babakova I.A., Kinesthetic reference for human orthograde posture, Neuroscience, 68, pp. 229-243, (1995); Bainbridge E., Bevans S., Keeley B., Oriel K., The effects of the Nintendo wii fit on community-dwelling older adults with perceived balance deficits: A pilot study, Physical & Occupational Therapy in Geriatrics, 29, pp. 126-135, (2011); Lange B., Flynn S., Proffitt R., Chang C.-Y., Rizzo A., Development of an interactive game-based rehabilitation tool for dynamic balance training, Topics in Stroke Rehab, 17, pp. 345-352, (2010); Nitz J.C., Kuys S., Isles R., Fu S., Is the Wii Fit a new-generation tool for improving balance, health and well-being? A pilot study, Climacteric, 13, pp. 487-491, (2010); Gil-Gomez J.-A., Llorens R., Alcaniz M., Colomer C., Effectiveness of a Wii balance board-based system (eBaViR) for balance rehabilitation: A pilot randomized clinical trial in patients with acquired brain injury, J NeuroEng Rehab, 8, (2011); De Bruin E.D., Schoene D., Pichierri G., Smith S.T., Use of virtual reality technique for the training of motor control in the elderly, Z Gerontol Geriatr, 43, pp. 229-234, (2010); Adamovich S.V., Fluet G.G., Tunik E., Merians A.S., Sensorimotor training in virtual reality: A review, NeuroRehabilitation, 25, pp. 29-44, (2009); Barclay-Goddard R., Stevenson T., Poluha W., Moffatt M.E., Taback S.P., Force platform feedback for standing balance training after stroke, Cochrane Database of Syst Rev, 4, (2004); Van Peppen R.P.S., Kortsmit M., Lindeman E., Kwakkel G., Effects of visual feedback therapy on postural control in bilateral standing after stroke: A systematic review, Journal of Rehabilitation Medicine, 38, 1, pp. 3-9, (2006); Zijlstra A., Mancini M., Chiari L., Zijlstra W., Biofeedback for training balance and mobility tasks in older populations: A systematic review, J NeuroEngRehab, 7, (2010); Hagedorn D.K., Holm E., Effects of traditional physical training and visual computer feedback training in frail elderly patients. A randomized intervention study, Eur J Phys and Rehab Med, 46, pp. 159-168, (2010); Berg K.O., Wood-Dauphinee S.L., Williams J.I., The Balance Scale: Reliability assessment with elderly residents and patients with an acute stroke, Scand J Rehab Med, 27, pp. 27-36, (1995); Berg K.O., Wood-Dauphinee S.L., Williams J.I., Maki B., Measuring balance in the elderly: Validation of an instrument, Can J Public Health, 83, (1992); Podsiadlo D., Richardson S., The timed ""up & Go"": A test of basic functional mobility for frail elderly persons, J Am Geriatric Soc, 39, pp. 142-148, (1991); Whitney S.L., Wrisley D.M., Marchetti G.F., Gee M.A., Redfern M.S., Furman J.M., Clinical measurement of sit-to-stand performance in people with balance disorders: Validity of data for the Five-Times-Sit-to-Stand Test, Physical Therapy, 85, 10, pp. 1034-1045, (2005); Lord S.R., Murray S.M., Chapman K., Munro B., Tiedemann A., Sit-to-stand performance depends on sensation, speed, balance, and psychological status in addition to strength in older people, J Gerontol Series A: Biol Sci Med Sci, 57, (2002); De Leva P., Adjustments to zatsiorsky-seluyanov's segment inertia parameters, Journal of Biomechanics, 29, 9, pp. 1223-1230, (1996)","C. Duclos; Pathokinesiology Laboratory, Centre for Interdisciplinary Research in Rehabilitation (CRIR), Institut de Réadaptation Gingras-Lindsay-de-Montréal (IRGLM), Montréal, QC H3S 2J4, 6300 avenue Darlington, Canada; email: cyril.duclos@umontreal.ca","","","17430003","","","22607025","English","J. NeuroEng. Rehabil.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-84861155483" "Nedergaard N.J.; Dalbø S.; Petersen S.V.; Zebis M.K.; Bencke J.","Nedergaard, Niels Jensby (44061667300); Dalbø, Sanna (57212583955); Petersen, Sus Vindberg (57212586529); Zebis, Mette Kreutzfeldt (16641697800); Bencke, Jesper (6602699399)","44061667300; 57212583955; 57212586529; 16641697800; 6602699399","Biomechanical and neuromuscular comparison of single- and multi-planar jump tests and a side-cutting maneuver: Implications for ACL injury risk assessment","2020","Knee","27","2","","324","333","9","23","10.1016/j.knee.2019.10.022","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85077164759&doi=10.1016%2fj.knee.2019.10.022&partnerID=40&md5=ab502bb69040f3cfcb8b34a1c71d07fa","Human Movement Analysis Laboratory Section 247, Department of Orthopedic Surgery Section 333, Hvidovre Hospital, Copenhagen University Hospital at Amager-Hvidovre, Copenhagen, Denmark; Department of Physiotherapy, Faculty of Health and Technology, University College Copenhagen, Copenhagen, Denmark","Nedergaard N.J., Human Movement Analysis Laboratory Section 247, Department of Orthopedic Surgery Section 333, Hvidovre Hospital, Copenhagen University Hospital at Amager-Hvidovre, Copenhagen, Denmark; Dalbø S., Department of Physiotherapy, Faculty of Health and Technology, University College Copenhagen, Copenhagen, Denmark; Petersen S.V., Department of Physiotherapy, Faculty of Health and Technology, University College Copenhagen, Copenhagen, Denmark; Zebis M.K., Department of Physiotherapy, Faculty of Health and Technology, University College Copenhagen, Copenhagen, Denmark; Bencke J., Human Movement Analysis Laboratory Section 247, Department of Orthopedic Surgery Section 333, Hvidovre Hospital, Copenhagen University Hospital at Amager-Hvidovre, Copenhagen, Denmark","Background: Non-contact anterior cruciate ligament (ACL) injuries are a major problem among adolescent female soccer and handball players. Therefore, the aim of this study was to examine if known biomechanical and neuromuscular ACL injury risk factors obtained from single-planar jump-landings and multi-planar side-jumps can resemble the demands of side-cutting maneuvers, a known high-risk ACL injury movement for this population. Methods: Twenty-four female soccer and handball players (mean ± SD: age: 17 ± 1 year; height: 172 ± 66 cm; mass: 67 ± 9 kg) performed a series of functional tasks including two single-planar jump-landings, two multi-planar side-jumps and a sports-specific side-cutting maneuver on their dominant leg. Frontal and sagittal plane knee and hip joint kinematics and kinetics were calculated from three-dimensional motion analysis, whereas hamstring and quadriceps muscle pre-activity levels were measured with surface electromyography. Results: The sports-specific side-cut was distinguished by more knee flexion at initial contact, greater abduction angles and external knee abduction moments, higher biceps femoris and semitendinosus muscle pre-activity levels than both the single-planar jump-landings and multi-planar side-jumps (p < .05). Whilst, poor-to-strong spearman rank correlation coefficients inconsistently were found for the biomechanical and neuromuscular ACL injury risk factors explored between the side-cut and the single-planar jump-landings (rs = 0.01–0.78) and multi-planar side-jumps (rs = 0.03–0.88) respectively. Conclusion: Single-planar jump-landings and multi-planar side-jumps should be used with caution to test for non-contact ACL injury risk factors in adolescent female soccer and handball players, because they do not mimic the biomechanical nor neuromuscular demands of the most frequent injury situation. © 2019 Elsevier B.V.","Adolescent females; Anterior cruciate ligament; Drop jumps; Injury screening","Adolescent; Age Factors; Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Electromyography; Female; Hamstring Muscles; Hip Joint; Humans; Knee Joint; Motor Activity; Risk Assessment; Risk Factors; Sex Factors; Soccer; adolescent; anterior cruciate ligament injury; Article; biceps femoris muscle; biomechanics; clinical article; controlled study; correlation coefficient; electromyography; female; flinch-jump test; hamstring muscle; hip; human; kinematics; knee function; multi-planar jump test; priority journal; quadriceps femoris muscle; risk assessment; risk factor; semitendinous muscle; single-planar jump test; soccer player; age; anterior cruciate ligament injury; injury; knee; motor activity; pathophysiology; physiology; sex factor; soccer","Myklebust G., Maehlum S., Engebretsen L., Strand T., Solheim E., Registration of cruciate ligament injuries in Norwegian top level team handball. A prospective study covering two seasons, Scand J Med Sci Sports, 7, pp. 289-292, (1997); Renstrom P., Ljungqvist A., Arendt E., Beynnon B., Fukubayashi T., Garrett W., Et al., Non-contact ACL injuries in female athletes: an International Olympic Committee current concepts statement, Br J Sports Med, 42, pp. 394 LP-412, (2008); Walden M., Hagglund M., Werner J., Ekstrand J., The epidemiology of anterior cruciate ligament injury in football (soccer): a review of the literature from a gender-related perspective, Knee Surg Sports Traumatol Arthrosc, 19, pp. 3-10, (2011); Beynnon B.D., Vacek P.M., Newell M.K., Tourville T.W., Smith H.C., Shultz S.J., Et al., The effects of level of competition, sport, and sex on the incidence of first-time noncontact anterior cruciate ligament injury, Am J Sports Med, 42, pp. 1806-1812, (2014); Sanders T.L., Maradit Kremers H., Bryan A.J., Larson D.R., Dahm D.L., Levy B.A., Et al., Incidence of anterior cruciate ligament tears and reconstruction: a 21-year population-based study, Am J Sports Med, 44, pp. 1502-1507, (2016); Boden B.P., Dean G.S., Feagin J.A.J., Garrett W.E.J., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Cochrane J.L., Lloyd D.G., Buttfield A., Seward H., McGivern J., Characteristics of anterior cruciate ligament injuries in Australian football, J Sci Med Sport, 10, pp. 96-104, (2007); Koga H., Nakamae A., Shima Y., Iwasa J., Myklebust G., Engebretsen L., Et al., Mechanisms for noncontact anterior cruciate ligament injuries: knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, pp. 2218-2225, (2010); Faude O., Junge A., Kindermann W., Dvorak J., Injuries in female soccer players: a prospective study in the German national league, Am J Sports Med, 33, pp. 1694-1700, (2005); Olsen O.-E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: a systematic video analysis, Am J Sports Med, 32, pp. 1002-1012, (2004); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes, Am J Sports Med, 33, pp. 492-501, (2005); Myer G.D., Ford K.R., Hewett T.E., New method to identify athletes at high risk of ACL injury using clinic-based measurements and freeware computer analysis, Br J Sports Med, 45, pp. 238-244, (2011); Zebis M.K., Andersen L.L., Bencke J., Kjaer M., Aagaard P., Identification of athletes at future risk of anterior cruciate ligament ruptures by neuromuscular screening, Am J Sports Med, 37, pp. 1967-1973, (2009); Zebis M.K., Bencke J., Andersen L.L., Dossing S., Alkjaer T., Magnusson S.P., Et al., The effects of neuromuscular training on knee joint motor control during sidecutting in female elite soccer and handball players, Clin J Sport Med, 18, pp. 329-337, (2008); Myklebust G., Engebretsen L., Braekken I.H., Skjolberg A., Olsen O.E., Bahr R., Prevention of anterior cruciate ligament injuries in female team handball players: a prospective intervention study over three seasons, Clin J Sport Med, 13, pp. 71-78, (2003); Donnell-Fink L.A., Klara K., Collins J.E., Yang H.Y., Goczalk M.G., Katz J.N., Et al., Effectiveness of knee injury and anterior cruciate ligament tear prevention programs: a meta-analysis, PLoS One, 10, (2015); Lim B.-O., Lee Y.S., Kim J.G., An K.O., Yoo J., Kwon Y.H., Effects of sports injury prevention training on the biomechanical risk factors of anterior cruciate ligament injury in high school female basketball players, Am J Sports Med, 37, pp. 1728-1734, (2009); Bencke J., Aagaard P., Zebis M.K., Oliver J., Muscle activation during acl injury risk movements in young female athletes: a narrative review, Front Physiol, 9, pp. 1-10, (2018); Smith H.C., Vacek P., Johnson R.J., Slauterbeck J.R., Hashemi J., Shultz S., Et al., Risk factors for anterior cruciate ligament injury: a review of the literature—part 2: hormonal, genetic, cognitive function, previous injury, and extrinsic risk factors, Sports Health, 4, pp. 155-161, (2012); Leppanen M., Pasanen K., Kujala U.M., Vasankari T., Kannus P., Ayramo S., Et al., Stiff landings are associated with increased ACL injury risk in young female basketball and floorball players, Am J Sports Med, 45, pp. 386-393, (2017); Tsai L.-C., Powers C.M., Increased hip and knee flexion during landing decreases tibiofemoral compressive forces in women who have undergone anterior cruciate ligament reconstruction, Am J Sports Med, 41, pp. 423-429, (2013); Tsai L.-C., Ko Y.-A., Hammond K.E., Xerogeanes J.W., Warren G.L., Powers C.M., Increasing hip and knee flexion during a drop-jump task reduces tibiofemoral shear and compressive forces: implications for ACL injury prevention training, J Sports Sci, 35, pp. 2405-2411, (2017); McLean S.G., Huang X., van den Bogert, Antonie J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: implications for ACL injury, Clin Biomech (Bristol, Avon), 20, pp. 863-870, (2005); More R.C., Karras B.T., Neiman R., Fritschy D., Woo S.L., Daniel D.M., Hamstrings–an anterior cruciate ligament protagonist. An in vitro study, Am J Sports Med, 21, pp. 231-237, (1993); Withrow T.J., Huston L.J., Wojtys E.M., Ashton-Miller J.A., Effect of varying hamstring tension on anterior cruciate ligament strain during in vitro impulsive knee flexion and compression loading, J Bone Joint Surg Am, 90, pp. 815-823, (2008); Smeets A., Malfait B., Dingenen B., Robinson M.A., Vanrenterghem J., Peers K., Et al., Is knee neuromuscular activity related to anterior cruciate ligament injury risk? A pilot study, Knee, (2018); Krosshaug T., Steffen K., Kristianslund E., Nilstad A., Mok K.-M., Myklebust G., Et al., The vertical drop jump is a poor screening test for acl injuries in female elite soccer and handball players: a prospective cohort study of 710 athletes, Am J Sports Med, 44, pp. 874-883, (2016); Kristianslund E., Faul O., Bahr R., Myklebust G., Krosshaug T., Sidestep cutting technique and knee abduction loading: implications for ACL prevention exercises, Br J Sports Med, (2013); D a P., Marshall S.W., Boling M.C., C a T., Garrett W.E., Beutler A.I., The Landing Error Scoring System (LESS) Is a valid and reliable clinical assessment tool of jump-landing biomechanics: The JUMP-ACL study, Am J Sports Med, 37, pp. 1996-2002, (2009); Husted R.S., Bencke J., Andersen L.L., Myklebust G., Kallemose T., Lauridsen H.B., Et al., A comparison of hamstring muscle activity during different screening tests for non-contact ACL injury, Knee, 23, pp. 362-366, (2016); Jones P.A., Herrington L.C., Munro A.G., Graham-smith P., Is there a relationship between landing, cutting, and pivoting tasks in terms of the characteristics of dynamic valgus?, Am J Sports Med, 42, pp. 2095-2102, (2014); Chinnasee C., Weir G., Sasimontonkul S., Alderson J., Donnelly C., Science S., Et al., A biomechanical comparison of single-leg landing and unplanned sidestepping, Int J Sports Med, (2018); O'Connor K.M., Monteiro S.K., Hoelker I.A., Comparison of selected lateral cutting activities used to assess ACL injury risk, J Appl Biomech, 25, pp. 9-21, (2009); Bencke J., Curtis D., Krogshede C., Jensen L.K., Bandholm T., Zebis M.K., Biomechanical evaluation of the side-cutting maneuver associated with ACL injury in young female handball players, Knee Surg Sports Traumatol Arthrosc, 21, pp. 1876-1881, (2013); Woltring H.J., A Fortran package for generalized, cross-validatory spline smoothing and differentiation, Adv Eng Softw, 8, pp. 104-113, (1986); Hermens H.J., Freriks B., Merletti R., Stegeman D., Blok J., Rau G., Et al., SENIAM 8: European recommendations for surface electromyography, (1999); Konrad P., The ABC of EMG: a practical introduction to kinesiological electromyography, (2006); Krosshaug T., Slauterbeck J.R., Engebretsen L., Bahr R., Biomechanical analysis of anterior cruciate ligament injury mechanisms: Three-dimensional motion reconstruction from video sequences, Scand J Med Sci Sports, 17, pp. 508-519, (2007); Portney L.G., Watkins M.P., Foundations of clinical research: application to practice, (1993); Sinsurin K., Srisangboriboon S., Vachalathiti R., Side-to-side differences in lower extremity biomechanics during multi-directional jump landing in volleyball athletes, Eur J Sport Sci, pp. 1-11, (2017); Sinsurin K., Vachalathiti R., Jalayondeja W., Limroongreungrat W., Knee muscular control during jump landing in multidirections, Asian J Sports Med, 7, (2016)","J. Bencke; Human Movement Analysis Laboratory Section 247, Department of Orthopedic Surgery Section 333, Hvidovre Hospital, Copenhagen University Hospital at Amager-Hvidovre, Copenhagen, Denmark; email: jesper.bencke@regionh.dk","","Elsevier B.V.","09680160","","KNEEF","31889614","English","Knee","Article","Final","","Scopus","2-s2.0-85077164759" "Bendiksen M.; Pettersen S.A.; Ingebrigtsen J.; Randers M.B.; Brito J.; Mohr M.; Bangsbo J.; Krustrup P.","Bendiksen, Mads (36620994100); Pettersen, Svein Arne (6701790226); Ingebrigtsen, Jørgen (6506506986); Randers, Morten B. (35194687200); Brito, João (7101605635); Mohr, Magni (7101607019); Bangsbo, Jens (7006071456); Krustrup, Peter (6603882135)","36620994100; 6701790226; 6506506986; 35194687200; 7101605635; 7101607019; 7006071456; 6603882135","Application of the Copenhagen Soccer Test in high-level women players - locomotor activities, physiological response and sprint performance","2013","Human Movement Science","32","6","","1430","1442","12","24","10.1016/j.humov.2013.07.011","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84888852386&doi=10.1016%2fj.humov.2013.07.011&partnerID=40&md5=1fc7dfdc31b4af54aa3777bd2571a2c5","Department of Nutrition, Exercise and Sports, Center for Team Sports and Health, University of Copenhagen, Denmark; The Regional Center for Sport, Exercise and Health-North, Faculty of Health Sciences, University of Tromsoe, Tromsoe, Norway; Department of Sports, Center of Practical Knowledge, University of Nordland, Bodø, Norway; Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, Porto, Portugal; Sport and Health Sciences, College of Life and Environmental Sciences, St. Luke's Campus, University of Exeter, Exeter, United Kingdom; Department of Food and Nutrition and Sport Science, University of Gothenburg, Gothenburg, Sweden","Bendiksen M., Department of Nutrition, Exercise and Sports, Center for Team Sports and Health, University of Copenhagen, Denmark; Pettersen S.A., The Regional Center for Sport, Exercise and Health-North, Faculty of Health Sciences, University of Tromsoe, Tromsoe, Norway; Ingebrigtsen J., Department of Sports, Center of Practical Knowledge, University of Nordland, Bodø, Norway; Randers M.B., Department of Nutrition, Exercise and Sports, Center for Team Sports and Health, University of Copenhagen, Denmark; Brito J., Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, Porto, Portugal; Mohr M., Sport and Health Sciences, College of Life and Environmental Sciences, St. Luke's Campus, University of Exeter, Exeter, United Kingdom, Department of Food and Nutrition and Sport Science, University of Gothenburg, Gothenburg, Sweden; Bangsbo J., Department of Nutrition, Exercise and Sports, Center for Team Sports and Health, University of Copenhagen, Denmark; Krustrup P., Department of Nutrition, Exercise and Sports, Center for Team Sports and Health, University of Copenhagen, Denmark, Sport and Health Sciences, College of Life and Environmental Sciences, St. Luke's Campus, University of Exeter, Exeter, United Kingdom","We evaluated the physiological response, sprint performance and technical ability in various phases of the Copenhagen Soccer Test for Women (CSTw) and investigated whether the locomotor activities of the CSTw were comparable to competitive match-play (CM). Physiological measurements and physical/technical assessments were performed during CSTw for eleven Norwegian high-level women soccer players. The activity pattern during CSTw and CM was monitored using the ZXY tracking system. No differences were observed between CSTw and CM with regards to total distance covered (10093 ± 94 and 9674 ± 191. m), high intensity running (1278 ± 67 and 1193 ± 115. m) or sprinting (422 ± 55 and 372 ± 46 m) (p>.05). During CSTw, average HR was 85 ± 2%HRmax with 35 ± 2% playing time >90%HRmax. Blood lactate increased (p<05) from 1.4 ± 0.3. mM at rest to an average of 4.7 ± 0.5. mM during CSTw, with no changes during the test. Blood glucose was 5.4 ± 0.3. mM at rest and remained unaltered during CSTw. Sprint performance (2 × 20. m) decreased (p<05) by 3% during CSTw (8.19 ± 0.06-8.47 ± 0.10. s). In conclusion, the locomotor activities during CSTw were comparable to that of high-level competitive match-play. The physiological demands of the CSTw were high, with no changes in heart rate, blood lactate or technical performance during the test, but a lowered sprint performance towards the end of the test. © 2013 Elsevier B.V.","Activity profile; Blood lactate; Fatigue; Football; Heart rate; Soccer specific movements; Technical performance","Adolescent; Athletic Performance; Biomechanical Phenomena; Competitive Behavior; Female; Humans; Motor Activity; Muscle Fatigue; Norway; Physical Endurance; Physical Fitness; Running; Soccer; 2220; 3720; Activity profile; Blood lactate; Fatigue; Football; Heart rate; Soccer specific movements; Technical performance; glucose; lactic acid; adult; article; athlete; athletic performance; Copenhagen Soccer Test; exercise; female; fitness; glucose blood level; heart rate; human; human experiment; human tissue; lactate blood level; locomotion; named inventories, questionnaires and rating scales; normal human; Norway; physical performance; running; signal transduction; soccer","Andersson H., Ekblom B., Krustrup P., Elite football on artificial turf versus natural grass: Movement patterns, technical standards, and player impressions, Journal of Sports Science, 26, pp. 113-122, (2008); Andersson H.A., Randers M.B., Heiner-Moller A., Krustrup P., Mohr M., Elite female soccer players perform more high-intensity running when playing in international games compared with domestic league games, Journal of Strength and Conditioning Research, 24, pp. 912-919, (2010); Bangsbo J., Energy demands in competitive soccer, Journal of Sports Sciences, 12, (1994); Bangsbo J., Iaia F.M., Krustrup P., The Yo-Yo intermittent recovery test: A useful tool for evaluation of physical performance in intermittent sports, Sports Medicine, 38, pp. 37-51, (2008); Bangsbo J., Lindquist F., Comparison of various exercise tests with endurance performance during soccer in professional players, International Journal of Sports Medicine, 13, pp. 125-132, (1992); Bangsbo J., Mohr M., Krustrup P., Physical and metabolic demands of training and match-play in the elite football player, Journal of Sports Sciences, 24, pp. 665-674, (2006); Bangsbo J., Norregaard L., Thorso F., Activity profile of competition soccer, Canadian Journal of Sport Science, 16, pp. 110-116, (1991); Bendiksen M., Bischoff R., Randers M.B., Mohr M., Rollo I., Suetta C., Et al., The Copenhagen soccer test: Physiological response and fatigue development, Medicine and Science in Sports and Exercise, 44, pp. 1595-1603, (2012); Bradley P.S., Sheldon W., Wooster B., Olsen P., Boanas P., Krustrup P., High-intensity running in English FA Premier League soccer matches, Journal of Sports Sciences, 27, pp. 159-168, (2009); Drust B., Reilly T., Cable N.T., Physiological responses to laboratory-based soccer-specific intermittent and continuous exercise, Journal of Sports Sciences, 18, pp. 885-892, (2000); Dwyer D.B., Gabbett T.J., Global positioning system data analysis: Velocity ranges and a new definition of sprinting for field sport athletes, Journal of Strength and Conditioning Research, 26, pp. 818-824, (2012); Ekblom B., Applied physiology of soccer, Sports Medicine, 3, pp. 50-60, (1986); Gabbett T.J., Mulvey M.J., Time-motion analysis of small-sided training games and competition in elite women soccer players, Journal of Strength and Conditioning Research, 22, pp. 543-552, (2008); Gregson W., Drust B., Atkinson G., Salvo V.D., Match-to-match variability of high-speed activities in premier league soccer, International Journal of Sports Medicine, 31, pp. 237-242, (2010); Greig M.P., McNaughton L.R., Lovell R.J., Physiological and mechanical response to soccer-specific intermittent activity and steady-state activity, Research in Sports Medicine, 14, pp. 29-52, (2006); Gunnarsson T.P., Bendiksen M., Bischoff R., Christensen P.M., Lesivig B., Madsen K., Et al., Effect of whey protein- and carbohydrate-enriched diet on glycogen resynthesis during the first 48h after a soccer game, Scandinavian Journal of Medicine and Science in Sports, 23, pp. 508-515, (2013); Ingebrigtsen J., Bendiksen M., Randers M.B., Castagna C., Krustrup P., Holtermann A., Yo-Yo IR2 testing of elite and sub-elite soccer players: Performance, heart rate response and correlations to other interval tests, Journal of Sports Sciences, 30, pp. 1337-1345, (2012); Krustrup P., Bendiksen M., Bangsbo J., Response to Dr. Vescovi, Medicine and Science in Sports and Exercise, 45, (2013); Krustrup P., Mohr M., Amstrup T., Rysgaard T., Johansen J., Steensberg A., Et al., The yo-yo intermittent recovery test: Physiological response, reliability, and validity, Medicine and Science in Sports and Exercise, 35, pp. 697-705, (2003); Krustrup P., Mohr M., Ellingsgaard H., Bangsbo J., Physical demands during an elite female soccer game: Importance of training status, Medicine and Science in Sports and Exercise, 37, pp. 1242-1248, (2005); Krustrup P., Mohr M., Nybo L., Jensen J.M., Nielsen J.J., Bangsbo J., The Yo-Yo IR2 test: Physiological response, reliability, and application to elite soccer, Medicine and Science in Sports and Exercise, 38, pp. 1666-1673, (2006); Krustrup P., Mohr M., Steensberg A., Bencke J., Kjaer M., Bangsbo J., Muscle and blood metabolites during a soccer game: Implications for sprint performance, Medicine and Science in Sports and Exercise, 38, pp. 1165-1174, (2006); Krustrup P., Ortenblad N., Nielsen J., Nybo L., Gunnarsson T.P., Iaia F.M., Et al., Maximal voluntary contraction force, SR function and glycogen resynthesis during the first 72h after a high-level competitive soccer game, European Journal of Applied Physiology, 111, pp. 2987-2995, (2011); Krustrup P., Zebis M., Jensen J.M., Mohr M., Game-induced fatigue patterns in elite female soccer, Journal of Strength and Conditioning Research, 24, pp. 437-441, (2010); Mohr M., Krustrup P., Heat stress impairs repeated jump ability after competitive elite soccer games, Journal of Strength and Conditioning Research, 27, pp. 683-689, (2013); Mohr M., Krustrup P., Andersson H., Kirkendal D., Bangsbo J., Match activities of elite women soccer players at different performance levels, Journal of Strength and Conditioning Research, 22, pp. 341-349, (2008); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, Journal of Sports Sciences, 21, pp. 519-528, (2003); Mohr M., Krustrup P., Nybo L., Nielsen J.J., Bangsbo J., Muscle temperature and sprint performance during soccer matches: Beneficial effect of re-warm-up at half-time, Scandinavian Journal of Medicine and Science in Sports, 14, pp. 156-162, (2004); Mohr M., Mujika I., Santisteban J., Randers M.B., Bischoff R., Solano R., Et al., Examination of fatigue development in elite soccer in a hot environment: A multi-experimental approach, Scandinavian Journal of Medicine and Science in Sports, 20, pp. 125-132, (2010); Mujika I., Santisteban J., Impellizzeri F.M., Castagna C., Fitness determinants of success in men's and women's football, Journal of Sports Sciences, 27, pp. 107-114, (2009); Nybo L., Sundstrup E., Jakobsen M.D., Mohr M., Hornstrup T., Simonsen L., Et al., High-intensity training versus traditional exercise interventions for promoting health, Medicine and Science in Sports and Exercise, 42, pp. 1951-1958, (2010); Pettersen S.A., Mathisen G.E., Effect of short burst activities on sprint and agility performance in 11- to 12-year-old boys, Journal of Strength and Conditioning Research, 26, pp. 1033-1038, (2012); Rostgaard T., Iaia F.M., Simonsen D.S., Bangsbo J., A test to evaluate the physical impact on technical performance in soccer, Journal of Strength and Conditioning Research, 22, pp. 283-292, (2008); Shalfawi S.A., Sabbah A., Kailani G., Tonnessen E., Enoksen E., The relationship between running speed and measures of vertical jump in professional basketball players: a field-test approach, Journal of Strength and Conditioning Research, 25, pp. 3088-3092, (2011); Stuart G.R., Hopkins W.G., Cook C., Cairns S.P., Multiple effects of caffeine on simulated high-intensity team-sport performance, Medicine and Science in Sports and Exercise, 37, pp. 1998-2005, (2005); Thorlund J.B., Aagaard P., Madsen K., Rapid muscle force capacity changes after soccer match play, International Journal of Sports Medicine, 30, pp. 273-278, (2009)","P. Krustrup; Sport and Health Sciences, College of Life and Environmental Sciences, St. Luke's Campus, University of Exeter, Exeter EX1 2LU, Heavitree Road, United Kingdom; email: P.Krustrup@exeter.ac.uk","","","18727646","","HMSCD","24016711","English","Hum. Mov. Sci.","Article","Final","","Scopus","2-s2.0-84888852386" "King A.C.; Wang Z.","King, Adam C. (53463842100); Wang, Zheng (54685441200)","53463842100; 54685441200","Asymmetrical stabilization and mobilization exploited during static single leg stance and goal directed kicking","2017","Human Movement Science","54","","","182","190","8","21","10.1016/j.humov.2017.05.004","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019099870&doi=10.1016%2fj.humov.2017.05.004&partnerID=40&md5=65ea763509700eafa51e0d4a76a29858","Department of Kinesiology, Texas Christian University, Fort Worth, 76129, TX, United States; Schiefelbusch Institute for Life Span Studies and Clinical Child Psychology Program, University of Kansas, Lawrence, 66045, KS, United States; Kansas Center for Autism Research and Training (K-CART), University of Kansas Medical School, Overland Park, 66213, KS, United States","King A.C., Department of Kinesiology, Texas Christian University, Fort Worth, 76129, TX, United States; Wang Z., Schiefelbusch Institute for Life Span Studies and Clinical Child Psychology Program, University of Kansas, Lawrence, 66045, KS, United States, Kansas Center for Autism Research and Training (K-CART), University of Kansas Medical School, Overland Park, 66213, KS, United States","The motor control properties of the right and left legs are dependent on the stabilization and mobilization features of the motor tasks. The current investigation examined the right and left leg control differences – interlateral asymmetries – during static single leg stance and dynamic goal directed kicking with an emphasis of the asymmetrical stabilization and mobilization components of movements. Ten young, healthy, right-leg preferred individuals with minimal kicking experience completed both tests on each limb. During static single leg stance, participants were requested to stand as still as possible with one leg in contact with a force platform. Interlateral asymmetries of the standing leg were quantified using postural variability measures of the center of pressure (COP) standard deviation in the anterior-posterior (SD-COPAP) and medial-lateral (SD-COPML) directions, resultant COP length and velocity, and 95% COP elliptical area. During dynamic goal directed kicking, participants stood on two adjacent force platforms in a side-by-side foot position and kicked a soccer ball toward three different directions as soon as they received an auditory cue of kicking. Three targets were located −30°, 0° or 30° in front and 3.05 m away from the participants’ midline. Participants kicked the ball toward the targets with each of their feet. The vertical ground reaction force (vGRF) of the kicking leg was used to define the preparation (from above two standard deviations of vGRF baseline to toe-off) and swing (from toe-off to toe-return) phases of dynamic kicking. To determine the presence of interlateral asymmetries during dynamic kicking, the magnitude and timing of the anticipatory postural adjustments (APA) during the preparation phase of kicking were quantified using the lateral net COP (COPnet-ML) time series derived from both force platforms. Postural variability measures of the support leg and the kinematic joint range of motion (JROM) trajectories of the kicking leg were also used to examined interlateral asymmetries. During static stance, no between-leg significance was identified for all dependent measures of COP variability suggesting symmetrical stabilization. During the preparation phase of kicking, both right and left leg kicking exhibited a similar level of APA magnitude, although the left leg kicking was shown to reach its maximum APA magnitude earlier than the right leg. In the support leg role, the right leg showed greater COP variability in the ML direction as compared to the left support leg and greater COP variability was observed when kicking in the ipsilateral direction compared to the center and contralateral directions. For mobilization control, the left kicking leg showed greater JROM displacements at the distal (knee and ankle) joints and reduced JROM primarily with hip frontal plane movements compared to the right kicking leg. The reported interlateral asymmetries during kicking may reflect a behavioral adaptation that results in differential stabilization between the right and left legs. Overall, the findings suggest that novel tasks, such as dynamic goal directed kicking, appear to be more sensitive than static balance in identifying interlateral asymmetries. © 2017 Elsevier B.V.","Goal directed kicking; Interlateral asymmetry; Mobilization; Single leg stance; Stabilization","Adaptation, Physiological; Adolescent; Ankle Joint; Biomechanical Phenomena; Female; Foot; Functional Laterality; Goals; Humans; Knee Joint; Leg; Male; Movement; Postural Balance; Posture; Pressure; Psychomotor Performance; Range of Motion, Articular; Soccer; Young Adult; ankle; auditory stimulation; female; ground reaction force; hip; human; human experiment; knee; male; quantitative study; range of motion; soccer; standing; time series analysis; toe; velocity; adaptation; adolescent; ankle; biomechanics; body equilibrium; body position; foot; hemispheric dominance; joint characteristics and functions; leg; motivation; movement (physiology); physiology; pressure; psychomotor performance; young adult","Anderson D.I., Sidaway B., Coordination changes associated with practice of a soccer kick, Research Quarterly for Exercise and Sport, 65, 2, pp. 93-99, (1994); Aruin A.S., The effect of asymmetry of posture on anticipatory postural adjustments, Neuroscience Letters, 401, 1-2, pp. 150-153, (2006); Aruin A.S., Forrest W.R., Latash M.L., (1998); Aruin A.S., Latash M.L., (1996); Bacelar A., Teixeira L., (2015); Barfield W.R., Effects of selected kinematic and kinetic variables on instep kicking with dominant and nondominant limbs, Journal of Human Movement Studies, 29, pp. 251-272, (1995); Bernstein N.A., The co-ordination and regulation of movements, Human Movement Science, (1967); Chew-Bullock T.S.Y., Anderson D.I., Hamel K.A., Gorelick M.L., Wallace S.A., Sidaway B., Kicking performance in relation to balance ability over the support leg., Human Movement Science, 31, 6, pp. 1615-1623, (2012); Elias L.J., Bryden M.P., Bulman-Fleming M.B., Footedness is a better predictor than is handedness of emotional lateralization, Neuropsychologia, 36, 1, pp. 37-43, (1998); Grouios G., Hatzitaki V., Kollias N., Koidou I., Investigating the stabilising and mobilising features of footedness, Laterality, 14, 4, pp. 362-380, (2009); Grouios G., Kollias N., Tsorbatzoudis H., Alexandris K., Over-representation of mixed-footedness among professional and semi-professional players: An innate superiority or strategic advantage, Journal of Human Movement Studies, 42, pp. 19-29, (2002); Hart S., Gabbard C., Brief communication: Bilateral footedness and task complexity, The International Journal of Neuroscience, 88, 1-2, pp. 141-146, (1996); Hart S., Gabbard C., Examining the stabilising characteristics of footedness, Laterality, 2, 1, pp. 17-26, (1997); Hart S., Gabbard C., Examining the mobilizing feature of footedness, Perceptual and Motor Skills, 86, pp. 1339-1342, (1998); Kiyota T., Fujiwara K., Dominant side in single-leg stance stability during floor oscillations at various frequencies, Journal of Physiological Anthropology, 33, 1, (2014); Le Clair K., Riach C., Postural stability measures: what to measure and for how long, Clinical Biomechanics, 11, 3, pp. 176-178, (1996); Marigold D.S., Eng J.J., The relationship of asymmetric weight-bearing with postural sway and visual reliance in stroke, Gait and Posture, 23, 2, pp. 249-255, (2006); Melzer I., Benjuya N., Kaplanski J., Postural stability in the elderly: A comparison between fallers and non-fallers, Age and Ageing, 33, 6, pp. 602-607, (2004); Oliveira L.F., Simpson D.M., Nadal J., Calculation of area of stabilometric signals using principal component analysis, Physiological Measurement, 17, 4, pp. 305-312, (1996); Peters M., Footedness: Asymmetries in foot preference and skill and neuropsychological assessment of foot movement, Psychological Bulletin, 103, pp. 179-192, (1988); Rode G., Tiliket C., Boisson D., Predominance of postural imbalance in left hemiparetic patients, Scandinavian Journal of Rehabilitation Medicine, 29, 1, pp. 11-16, (1997); Santos M.J., Kanekar N., Aruin A.S., The role of anticipatory postural adjustments in compensatory control of posture: 1. Electromyographic analysis, Journal of Electromyography and Kinesiology, 20, 3, pp. 388-397, (2010); Santos M.J., Kanekar N., Aruin A.S., The role of anticipatory postural adjustments in compensatory control of posture: 2. Biomechanical analysis, Journal of Electromyography and Kinesiology, 20, 3, pp. 398-405, (2010); Teixeira L.A., de Oliveira D.L., Romano R.G., Correa S.C., Leg preference and interlateral asymmetry of balance stability in soccer players, Research Quarterly for Exercise and Sport, 82, 1, pp. 21-27, (2011); Vieira O., Coelho D.B., Teixeira L.A., Asymmetric balance control between legs for quiet but not for perturbed stance, Experimental Brain Research, 232, 10, pp. 3269-3276, (2014); Wang Z., Newell K.M., (2013); Winter D.A., (1995)","A.C. King; TCU Box 297730, Texas Christian University, Fort Worth, 2800 S. University Dr., 76129, United States; email: a.king@tcu.edu","","Elsevier B.V.","01679457","","HMSCD","28501732","English","Hum. Mov. Sci.","Article","Final","","Scopus","2-s2.0-85019099870" "Kapidzic A.; Huremović T.; Biberovic A.","Kapidzic, Alen (56392804500); Huremović, Tarik (56392901000); Biberovic, Alija (56392980500)","56392804500; 56392901000; 56392980500","Kinematic analysis of the instep kick in youth soccer players","2014","Journal of Human Kinetics","42","1","","81","90","9","18","10.2478/hukin-2014-0063","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84908123306&doi=10.2478%2fhukin-2014-0063&partnerID=40&md5=2b801be204a388f74ef1fa213bfd79eb","Faculty of Physical Education and Sports, University in Tuzla, Tuzla, 75 000, Bosnia and Herzegovina","Kapidzic A., Faculty of Physical Education and Sports, University in Tuzla, Tuzla, 75 000, Bosnia and Herzegovina; Huremović T., Faculty of Physical Education and Sports, University in Tuzla, Tuzla, 75 000, Bosnia and Herzegovina; Biberovic A., Faculty of Physical Education and Sports, University in Tuzla, Tuzla, 75 000, Bosnia and Herzegovina","We attempted to establish which applied kinematic variables significantly contributed to the efficiency of the instep kick motion in soccer. The study sample comprised 13 boys (age: 13 ± 0.5 yrs; body mass: 41.50 ± 8.40 kg; body height: 151.46 ± 5.93 cm) from the FC Sloboda school of soccer. Each participant performed three kicks with maximum strength that were video recorded with two synchronized cameras (Casio Ex-F1) positioned 12 m away from the place of the kick. Data were collected by analyzing the video recordings of each kick. Data processing was performed using the APAS motion analysis system (Ariel Dynamics Inc., San Diego, CA). On the basis of the forward selection method of multiple regression analysis, we determined the correlations between the prediction variables and the selected criteria (speed of the ball; p = 0.01). On the basis of the regression coefficients, it was concluded that two variables significantly contributed to the speed of the ball: speed of the foot of the kicking leg at the time of contact with the ball (p = 0.01) and the distance between the angle support leg and center of the ball (""foot posterior displacement"") (p = 0.01). In order to achieve the best possible technical performance and, therefore, a higher speed of the ball, soccer players must pay attention to two important elements during training. First, it is necessary to position the support leg as close to the ball as possible and, second, maximize the force used in the initial phases of the kick to achieve a high speed of the kicking foot. © 2014 by Alen Kapidic.","biomechanics; foot; kicking technique; knee angle; support leg; velocity","","Amiri-Khorasani M., Osman N.A.A., Yusof A., Kinematics analysis: Number of trials necessary to achive performance stability during soccer instep kicking, J Hum Kinet, 23, pp. 15-20, (2010); Andersen T.B., Kristensen L.B., Sorensen H., Biomechanical Differences between Toe and Instep Kicking-Influence of Contact Area on the Coeefficient of Restitution, (2008); Asai T., Carre M.J., Akatsuka T., Haake S.J., The curve kick of a football I: Impact with the foot, Sports Engineering, 1, 5, pp. 183-192, (2005); Barfield R.W., Kirkendall T.D., Yu B., Kinematic instep kicking differences between elite female and male soccer players, J Sports Sci Med, 1, pp. 72-79, (2002); Dorge H.C., Bull Anderson T., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, J Sports Sci, 20, pp. 293-299, (2002); Harrison A., Mannering A., A biomechanical analysis of the instep kick in soccer with preferred and nonpreferrerd foot, ISBS-Conference Proceedings Archive, XXIV International Symposiumm of Bimechanics in Sports, pp. 1-4, (2006); Hussain I., Arshad Bari M., Biomechanical Evaluation of Ankle Force during Instep Kicking, (2012); Ishii H., Maruyama T., Influence of foot angle and impact point on ball behaviour in side-foot soccer kicking, The Impact of Technology on Sport, 2, pp. 403-408, (2007); Isokawa M., Less A., A biomechanical analysis of the instep kick motion in soccer, Science and Football, pp. 449-455, (1998); Ismail A.R., Mansor M.R.A., Ali M.F.M., Jaafar S., Makhtar N.K., Biomechanical analysis of ankle force: A case study for instep kicking, Am J Appl Sci, 7, 3, pp. 323-330, (2010); Ismail A.R., Ali M.F.M., Deros B.M., Johar M.S.N.M., Biomechanical Analysis and Optimalization Instep Kicking: A Case Study Malasysian Footballer, (2010); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Med Sci Sports Exerc, 361, 6, pp. 1017-1028, (2004); Kellis E., Katis A., Biomechanics and determinants of instep soccer, J. Sports Sci. Med., 6, pp. 154-165, (2007); Levanon J., Dapnea J., Comparison of the kinematics of the full-instep kick and pass kick in soccer, Med. Sci. Sports Exerc., 30, pp. 917-927, (1998); Masuda K., Kikuhara N., Demura S., Katstuta S., Yamanaka K., Relationship between muscle strength in various isokinetic movements and kick performance among soccer players, J Sports Med Phys Fitness, 45, pp. 44-52, (2005); Meamarbashi A., Hossaini S.R.A., Application of Novel Inertial Technique to Compare the Kinematics and Kinetics of the Legs in the Soccer Instep Kick, J Hum Kinet, 23, pp. 3-12, (2010); Opavsky P., Biomechanical Analysis of Technical Elements in Football, pp. 35-45, (2000); Orloff H., Sumida B., Chow J., Habibi L., Fujino A., Kramer B., Ground reaction forces and kinematics of plant leg position during instep kicking ina male and female collegiate soccer players, Sports Biomech, 7, pp. 238-247, (2008); Poulmedis P., Randoyannis G., Mitsou A., Tsarouchas E., The influence of Isokinetic Muscle Torque Exerted in Various Speeds on Soccer Ball Velocity, J Orthop Sports Phys Ther, 10, 3, pp. 93-96, (1998); Potthast W., Heinrich K., Schneider J., Bruggemann G.P., The Success of A Soccer Kick Depends on Run Up Deceleration, (2010); Reilly T., Science and Soccer, pp. 123-125, (2003); Scurr J., Hall B., The effects of approach angle on penalty kicking accuracy and kick kinematics with recreational soccer players, J. Sports Sci. Med., 8, pp. 230-234, (2009); Shan G., Westwrhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomech, 4, 1, pp. 59-72, (2005); Shan G., Yuan J., Hao W., Gu M., Zhang X., Regression equations for estimating the quality of maximal instep kick by males and females in soccer, Kinesiology, 44, 2, pp. 139-147, (2012); Shinkai H., Nunome H., Isokawa M., Ikegami Y., Ball impact dynamics of instep soccer kicking, Med Sci Sports Exerc, 41, 4, pp. 889-897, (2009); Smith C., Gilleard W., Hammond J., Brooks L., The application of an exploratory factor analysis to investigate the inter-relationships amongst joint movement during performance of a football skill, J Sports Sci Med, 5, pp. 517-524, (2006); Stankovi R., Bubanj R., Joksimovi S., Characteristics of the speed of segments of swing foot at the technique of kicking the ball in football, Int J Phys Educ, 12, pp. 171-182, (2004); Tanaka Y., Shiokawa M., Yamashita H., Tsuji T., Manipulability Analysis of Kicking Motion in Soccer Based on Human Physical Propertie, (2006); Wesson J., The Science of Soccer, pp. 15-29, (2002)","","","Polish Academy of Science, Committee of Physical Culture","16405544","","","","English","J. Hum. Kinet.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-84908123306" "Sinclair J.; Fewtrell D.; Taylor P.J.; Bottoms L.; Atkins S.; Hobbs S.J.","Sinclair, Jonathan (36544295100); Fewtrell, David (6506227299); Taylor, Paul John (56147689000); Bottoms, Lindsay (22957027800); Atkins, Stephen (14036820800); Hobbs, Sarah Jane (57192912686)","36544295100; 6506227299; 56147689000; 22957027800; 14036820800; 57192912686","Three-dimensional kinematic correlates of ball velocity during maximal instep soccer kicking in males","2014","European Journal of Sport Science","14","8","","799","805","6","21","10.1080/17461391.2014.908956","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84919847854&doi=10.1080%2f17461391.2014.908956&partnerID=40&md5=555c105280513d006aeba791d1aeb5f2","Division of Sport Exercise and Nutritional Sciences, University of Central Lancashire, Preston, United Kingdom; School of Psychology, University of Central Lancashire, Preston, United Kingdom; School of Health and Bioscience, University of East London, London, United Kingdom","Sinclair J., Division of Sport Exercise and Nutritional Sciences, University of Central Lancashire, Preston, United Kingdom; Fewtrell D., Division of Sport Exercise and Nutritional Sciences, University of Central Lancashire, Preston, United Kingdom; Taylor P.J., School of Psychology, University of Central Lancashire, Preston, United Kingdom; Bottoms L., School of Health and Bioscience, University of East London, London, United Kingdom; Atkins S., Division of Sport Exercise and Nutritional Sciences, University of Central Lancashire, Preston, United Kingdom; Hobbs S.J., Division of Sport Exercise and Nutritional Sciences, University of Central Lancashire, Preston, United Kingdom","Abstract: Achieving a high ball velocity is important during soccer shooting, as it gives the goalkeeper less time to react, thus improving a player's chance of scoring. This study aimed to identify important technical aspects of kicking linked to the generation of ball velocity using regression analyses. Maximal instep kicks were obtained from 22 academy-level soccer players using a 10-camera motion capture system sampling at 500 Hz. Three-dimensional kinematics of the lower extremity segments were obtained. Regression analysis was used to identify the kinematic parameters associated with the development of ball velocity. A single biomechanical parameter; knee extension velocity of the kicking limb at ball contact Adjusted R2 = 0.39, p ≤ 0.01 was obtained as a significant predictor of ball-velocity. This study suggests that sagittal plane knee extension velocity is the strongest contributor to ball velocity and potentially overall kicking performance. It is conceivable therefore that players may benefit from exposure to coaching and strength techniques geared towards the improvement of knee extension angular velocity as highlighted in this study. © 2014, © 2014 European College of Sport Science.","ball velocity; in-step kicking; kinematics; Soccer","Adolescent; Biomechanical Phenomena; Humans; Image Processing, Computer-Assisted; Male; Range of Motion, Articular; Regression Analysis; Soccer; adolescent; biomechanics; human; image processing; joint characteristics and functions; male; physiology; regression analysis; soccer","Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Ball K., Use of weighted balls for improving kicking for distance, Journal of Sports Science and Medicine, 6, (2007); Ball K., Biomechanical considerations of distance kicking in Australian Rules football, Sports Biomechanics, 7, 1, pp. 10-23, (2008); Barfield W.R., Effects of selected kinematic and kinetic variables on instep kicking with dominant and non-dominant limbs, Journal of Human Movement Studies, 29, pp. 251-272, (1995); Barfield W.R., Kirkendall D., Yu B., Kinematic instep kicking differences between elite female and male soccer players, Journal of Sports Science and Medicine, 3, pp. 72-79, (2002); Bell A.L., Brand R.A., Pedersen D.R., Prediction of hip joint centre location from external landmarks, Human Movement Science, 8, 1, pp. 3-16, (1989); Bull-Andersen T., Dorge H.C., Thomsen F.I., Collisions in soccer kicking, Sports Engineering, 2, 2, pp. 121-125, (1999); Cabri J., De Proft E., Dufour W., Clarys J.P., The relation between muscular strength and kicking performance, Science and football, pp. 186-193, (1988); Cappozzo A., Cappello A., Della C.U., Pensalfini F., Surface-marker cluster design criteria for 3-D bone movement reconstruction, IEEE Transactions on Biomedical Engineering, 44, pp. 1165-1174, (1997); Cappozzo A., Catani F., Leardini A., Benedeti M.G., Della C.U., Position and orientation in space of bones during movement: Anatomical frame definition and determination, Clinical Biomechanics, 10, pp. 171-178, (1995); Chen Y., Chang J.H., An investigation of soccer ball velocity on instep kick with and without arm swaying, (2010); Cometti G., Maffiuletti N.A., Pousson M., Chatard J.-C., Maffulli N., Isokinetic strength and anaerobic power of elite, subelite and amateur French soccer players, International Journal of Sports Medicine, 22, 1, pp. 45-51, (2001); Coombs R., Garbutt G., Developments in the use of the hamstring/quadriceps ratio for the assessment of muscle balance, Journal of Sport Science and Medicine, 1, pp. 56-62, (2002); DeProft E., Cabri J., Dufour W., Clarys J.P., Strength training and kick performance in soccer players, Science and Football, pp. 108-113, (1988); De Witt J.K., Hinrichs R.N., Mechanical factors associated with the development of high ball velocity during an instep soccer kick, Sports Biomechanics, 11, pp. 382-390, (2012); Dorge H.C., Anderson T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Science, 20, pp. 293-299, (2002); Dorge H., Bull-Andersen T., Sorensen H., Simonsen E., Aagaard H., Dyhre-Poulsen P., Klausen K., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scandinavian Journal of Medicine and Science in Sports, 9, pp. 155-200, (1999); Godik M., Fales I., Blashak I., Changing the kicking accuracy of soccer players depending on the type, value and aims of training and competitive loads, Science and soccer II, pp. 254-260, (1993); Harrison A., Mannering A., A biomechanical analysis of the instep kick in soccer with preferred and non-preferred foot, (2006); Isokawa M., Lees A.A., Biomechanical analysis of the instep kick motion in soccer, Proceedings of oral sessions, science and football, pp. 449-455, (1988); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Science and Medicine, 6, pp. 154-165, (2007); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Medicine and Science in Sports and Exercise, 36, pp. 1017-1028, (2004); Knudson D., Bahamonde R., Effect of endpoint conditions on position and velocity at impact in tennis, Journal of Sports Sciences, 19, pp. 839-844, (2001); Lees A., Barton G., Robinson M., The influence of Cardan rotation sequence on angular orientation data for the lower limb in the soccer kick, Journal of Sport Sciences, 28, pp. 445-450, (2010); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (1998); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and football, pp. 441-448, (1988); Narici M., Sirtori M., Mognoni P., Maximal ball velocity and peak torques of hip flexor and knee extensor muscles, Science and football, pp. 429-433, (1988); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kick with the preferred and non-preferred leg, Journal of Sports Sciences, 24, pp. 529-541, (2006); Poulmedis P., Rondoyannis G., Mitsou A., Tsarouchas E., The influence of isokinetic muscle torque exerted in various speeds on soccer ball velocity, Journal of Orthopaedics and Sports Physical Therapy, 10, 3, pp. 93-96, (1988); Putnam C., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Medicine and Science in Sports and Exercise, 23, pp. 130-141, (1991); Putnam C., Sequential motions of body segments in striking and throwing skills: descriptions and explanations, Journal of Biomechanics, 26, pp. 125-135, (1993); Putnam C.A., Dunn E.G., Performance variations in rapid swinging motions: Effects on segment interaction and resultant joint moments, Biomechanics X-B, pp. 661-665, (1987); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomechanics, 4, 1, pp. 59-72, (2005); Sinclair J., Edmundson C.J., Brooks D., Hobbs S.J., Evaluation of kinematic methods of identifying gait events during running, International Journal of Sports Science and Engineering, 5, pp. 188-192, (2011); Sinclair J., Richards J., Taylor P.J., Edmundson C.J., Brooks D., Hobbs S.J., Three-dimensional kinematic comparison of treadmill and overground running, Sports Biomechanics, 12, pp. 272-282, (2013); Sinclair J., Taylor P.J., Hobbs S.J., Digital filtering of three-dimensional lower extremity kinematics: An assessment, Journal of Human Kinetics, 39, 1, pp. 5-13, (2013); Teixeira L., Kinematics of kicking as a function of different sources of constraint on accuracy, Perceptual and Motor Skills, 88, pp. 785-789, (1999); Williams K.R., Cavanagh P.R., Relationship between running mechanics, running economy, and performance, Journal of Applied Physiology, 63, pp. 1236-1245, (1987); Zernicke R., Roberts E.M., Human lower extremity kinetic relationship during systematic variations in resultant limb velocity, Biomechanics V-B, pp. 20-25, (1976)","","","Taylor and Francis Ltd.","17461391","","","24754671","English","Eur. J. Sport Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84919847854" "DiCesare C.A.; Kiefer A.W.; Bonnette S.; Myer G.D.","DiCesare, Christopher A. (55620685100); Kiefer, Adam W. (35316086800); Bonnette, Scott (55004035700); Myer, Gregory D. (6701852696)","55620685100; 35316086800; 55004035700; 6701852696","High-Risk Lower-Extremity Biomechanics Evaluated in Simulated Soccer-Specific Virtual Environments","2020","Journal of sport rehabilitation","29","3","","294","300","6","17","10.1123/jsr.2018-0237","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101728285&doi=10.1123%2fjsr.2018-0237&partnerID=40&md5=49dc941cbee3deb809250b6b745e0bc7","","","CONTEXT: Laboratory-based biomechanical analyses of sport-relevant movements such as landing and cutting have classically been used to quantify kinematic and kinetic factors in the context of injury risk, which are then used to inform targeted interventions designed to improve risky movement patterns during sport. However, the noncontextual nature of standard assessments presents challenges for assessing sport-relevant skill transfer. OBJECTIVE: To examine injury-risk biomechanical differences exhibited by athletes during a jump-landing task performed as part of both a standard biomechanical assessment and a simulated, sport-specific virtual reality (VR)-based assessment. DESIGN: Observational study. SETTING: Medical center laboratory. PARTICIPANTS: Twenty-two female adolescent soccer athletes (age = 16.0 [1.4] y, height = 165.6 [4.9] cm, and weight = 60.2 [11.4] kg). INTERVENTIONS: The landing performance was analyzed for a drop vertical jump task and a VR-based, soccer-specific corner-kick scenario in which the athletes were required to jump to head a virtual soccer ball and land. MAIN OUTCOME MEASURES: Hip, knee, and ankle joint kinematic differences in the frontal and sagittal planes. RESULTS: Athletes exhibited reduced hip and ankle flexion, hip abduction, and frontal plane ankle excursion during landing in realistic sport scenario compared with the standard drop vertical jump task. CONCLUSION: VR-based assessments can provide a sport-specific context in which to assess biomechanical deficits that predispose athletes for lower-extremity injury and offer a promising approach to better evaluate skill transfer to sport that can guide future injury prevention efforts.","injury risk; sport biomechanics; virtual reality","Adolescent; Athletic Injuries; Biomechanical Phenomena; Female; Healthy Volunteers; Humans; Lower Extremity; Movement; Risk Assessment; Soccer; Task Performance and Analysis; Virtual Reality; adolescent; biomechanics; female; human; lower limb; movement (physiology); normal human; physiology; risk assessment; soccer; sport injury; task performance; virtual reality","","","","NLM (Medline)","15433072","","","30676190","English","J Sport Rehabil","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85101728285" "Gehring D.; Rott F.; Stapelfeldt B.; Gollhofer A.","Gehring, Dominic (36763456900); Rott, F. (6507677200); Stapelfeldt, B. (8513558400); Gollhofer, A. (55851165900)","36763456900; 6507677200; 8513558400; 55851165900","Effect of soccer shoe cleats on knee joint loads","2007","International Journal of Sports Medicine","28","12","","1030","1034","4","20","10.1055/s-2007-965000","https://www.scopus.com/inward/record.uri?eid=2-s2.0-37249027596&doi=10.1055%2fs-2007-965000&partnerID=40&md5=39a3d8463399e48d51dae9cb52dfd03c","Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany; Department of Sport and Sport Science, University of Freiburg, 79117 Freiburg, Schwarzwaldstraße 175, Germany","Gehring D., Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany, Department of Sport and Sport Science, University of Freiburg, 79117 Freiburg, Schwarzwaldstraße 175, Germany; Rott F., Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany; Stapelfeldt B., Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany; Gollhofer A., Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany","Noncontact injuries frequently occur during soccer matches and training. The purpose of this study was to examine the influences of different soccer shoe studs to kinematic, kinetic and electromyographic parameters in the knee joint. Six male soccer players performed complex turning movements (180°) with bladed and round studded soccer shoes. Ground reaction forces, 3-D kinematics and electromyographic activity of the lower leg muscles were recorded. Calculated external knee joint moments were similar with both stud configurations, although there was a trend towards increased vertical and anterior-posterior ground reaction forces with blades. Electromyography evidenced significantly higher activation of m. quadriceps femoris (p = 0.02) with round studs during initial phase of stance. In conclusion, comparison of soccer shoes with round and bladed studs showed no significant differences in externally applied knee joint loads during a complex injury related movement. The significant increased activation of m. quadriceps femoris with round studs during the critical weight acceptance can be associated with an additional internal load on the anterior cruciate ligament. Therefore, results revealed no higher risk of getting noncontact knee joint injuries with bladed soccer shoes. © Georg Thieme Verlag KG Stuttgart.","Anterior cruciate ligament; Biomechanics; EMG; Joint moment","Adult; Biomechanics; Competitive Behavior; Electromyography; Humans; Knee Injuries; Knee Joint; Male; Shoes; Soccer; Sports Equipment; Weight-Bearing; adult; anterior cruciate ligament; article; controlled study; electromyography; equipment design; human; kinematics; kinetics; knee; knee function; leg muscle; male; muscle contraction; quadriceps femoris muscle; shoe; sport","Andreasson G., Lindenberger U., Renstrom P., Peterson L., Torque developed at simulated sliding between sport shoes and an artificial turf, Am J Sports Med, 14, pp. 225-230, (1986); Ashton-Miller J.A., Wojtys E.M., Huston L.J., Fry-Welch D., Can proprioception relay be improved by exercise?, Knee Surg Sports Traumatol Arthrosc, 9, pp. 128-136, (2001); Bahr R., Krosshaug T., Understanding injury mechanisms: A key component of preventing injuries in sport, Br J Sports Med, 39, pp. 324-329, (2005); Besier T.F., Lloyd D.G., Cochrane J.L., Ackerland T.R., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1168-1175, (2001); Colby S., Francisco A., Kirkendall D., Finch M., Garrett W., Electromyographic and kniematic analysis of cutting maneuvers, Am J Sports Med, 28, pp. 234-240, (2000); Davis R.B., Ounpuu S., Tyburski D., Gage J.R., A gait analysis data collection and reduction technique, Hum Mov Sci, 10, pp. 575-587, (1991); Faune P., Wulff Jakobsen B., Mechanism of anterior cruciate ligament injuries in soccer, Int J Sports Med, 27, pp. 75-79, (2006); Heidt Jr R.S., Dormer S.G., Cawley P.W., Scranton Jr P.E., Losse G., Howard M., Differences in friction and torsional resistance in athletic shoe-turf surface interfaces, Am J Sports Med, 24, pp. 834-842, (1996); Kadaba M.P., Ramakrishnan H.K., Wootten M.E., Measurement of lower extremity kinematics during level walking, J Orthop Res, 8, pp. 383-392, (1990); Lambson R.B., Barnhill B.S., Higgins R.W., Football cleat design and its effect on anterior cruciate ligament injuries. A three-year prospective study, Am J Sports Med, 24, pp. 705-706, (1996); Livesay G.A., Reda D.R., Naumann E.A., Peak torque and rotational stiffness developed at a shoe-surface interaction - the effect of shoe type and playing surface, Am J Sports Med, 34, pp. 415-422, (2006); Lloyd D.G., Buchanan T.S., Besier T.F., Neuromuscular biomechanical modeling to understand knee ligament loading, Med Sci Sports Exerc, 37, pp. 1939-1947, (2005); McLean S.G., Lipfert S.W., van den Bogen A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, pp. 1008-1016, (2004); Nyland J.A., Caborn D., Shapiro R., Johnson D.L., Crossover cutting during hamstring fatigue produces transverse plane knee control deficits, J Athl Training, 34, pp. 137-143, (1999); Piziali R.L., Nagel D.A., Koogel T., Whalen R., Knee and tibia strength in snow skiing, Series, pp. 24-31, (1982); Wong P., Hong Y., Soccer injury in the lower extremities, Br J Sports Med, 39, pp. 473-482, (2005); Woods C., Hawkins R., Hulse M., Hodson A., The football association medical research programme: An audit of injuries in professional football - analysis of preseason injuries, Br J Sports Med, 36, pp. 436-441, (2002)","D. Gehring; Department of Sport and Sport Science, University of Freiburg, 79117 Freiburg, Schwarzwaldstraße 175, Germany; email: dominic.gehring@sport.uni-freiburg.de","","","01724622","","IJSMD","17455123","English","Int. J. Sports Med.","Article","Final","","Scopus","2-s2.0-37249027596" "Matthews M.J.; Heron K.; Todd S.; Tomlinson A.; Jones P.; Delextrat A.; Cohen D.D.","Matthews, Martyn J. (8687369500); Heron, Kate (57193762899); Todd, Stefanie (57193759152); Tomlinson, Andrew (57193756348); Jones, Paul (55308526600); Delextrat, Anne (6506543159); Cohen, Daniel D. (35483406300)","8687369500; 57193762899; 57193759152; 57193756348; 55308526600; 6506543159; 35483406300","Strength and endurance training reduces the loss of eccentric hamstring torque observed after soccer specific fatigue","2017","Physical Therapy in Sport","25","","","39","46","7","18","10.1016/j.ptsp.2017.01.006","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85016429350&doi=10.1016%2fj.ptsp.2017.01.006&partnerID=40&md5=1c71d0b06a8ab09019bb8c1576b376a1","School of Health Sciences, Centre for Health Sciences Research, University of Salford, Salford, M66PU, United Kingdom; Faculty of Sport and Health Sciences, Oxford Brookes University, Oxford, United Kingdom; Instituto de Investigaciones, Escuela de Medicina, Universidad de Santander, Bucaramanga, Santander, Colombia","Matthews M.J., School of Health Sciences, Centre for Health Sciences Research, University of Salford, Salford, M66PU, United Kingdom; Heron K., School of Health Sciences, Centre for Health Sciences Research, University of Salford, Salford, M66PU, United Kingdom; Todd S., School of Health Sciences, Centre for Health Sciences Research, University of Salford, Salford, M66PU, United Kingdom; Tomlinson A., School of Health Sciences, Centre for Health Sciences Research, University of Salford, Salford, M66PU, United Kingdom; Jones P., School of Health Sciences, Centre for Health Sciences Research, University of Salford, Salford, M66PU, United Kingdom; Delextrat A., Faculty of Sport and Health Sciences, Oxford Brookes University, Oxford, United Kingdom; Cohen D.D., Instituto de Investigaciones, Escuela de Medicina, Universidad de Santander, Bucaramanga, Santander, Colombia","Objectives To investigate the effect of two hamstring training protocols on eccentric peak torque before and after soccer specific fatigue. Participants Twenty-two university male soccer players. Design Isokinetic strength tests were performed at 60°/s pre and post fatigue, before and after 2 different training interventions. A 45-min soccer specific fatigue modified BEAST protocol (M-BEAST) was used to induce fatigue. Players were randomly assigned to a 4 week hamstrings conditioning intervention with either a maximum strength (STR) or a muscle endurance (END) emphasis. Main outcome measures The following parameters were evaluated: Eccentric peak torque (EccPT), angle of peak torque (APT), and angle specific torques at knee joint angles of 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80° and 90°. Results There was a significant effect of the M-BEAST on the Eccentric torque angle profile before training as well as significant improvements in post-fatigue torque angle profile following the effects of both strength and muscle endurance interventions. Conclusions Forty-five minutes of simulated soccer activity leads to reduced eccentric hamstring torque at longer muscle lengths. Short-term conditioning programs (4-weeks) with either a maximum strength or a muscular endurance emphasis can equally reduce fatigue induced loss of strength over this time period. © 2017 Elsevier Ltd","Fatigue; Hamstring; Torque; Training","Hamstring Muscles; Humans; Knee Joint; Male; Muscle Fatigue; Muscle Strength; Physical Endurance; Resistance Training; Soccer; Torque; Young Adult; angle of peak torque; angle specific torque; Article; biomechanics; clinical protocol; eccentric peak torque; endurance training; hamstring muscle; human; human experiment; isokinetic exercise; male; muscle exercise; muscle fatigue; musculoskeletal system parameters; normal human; performance; reliability; resistance training; soccer; controlled study; endurance; knee; muscle fatigue; muscle strength; physiology; randomized controlled trial; soccer; torque; young adult","Anastasi S., Hamzeh M., Does the eccentric Nordic Hamstring exercise have an effect on isokinetic muscle strength imbalance and dynamic jumping performance in female rugby union players?, Isokinetics & Exercise Science, 19, 4, pp. 251-260, (2011); 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Brito J., Figueiredo P., Fernandes L., Seabra A., Soares J.M., Krustrup P., Et al., Isokinetic strength effects of FIFA's “The 11+” injury prevention training programme, Isokinetics & Exercise Science, 18, 4, pp. 211-215, (2010); Brockett C.L., Morgan D.L., Proske U., Predicting hamstring strain injury in elite athletes, Medicine & Science in Sports & Exercise, 36, 3, pp. 379-387, (2004); Cohen D., Bingnan Z., Okwera B., Matthews M., Delextrat A., Angle-specific eccentric hamstring fatigue after simulated soccer, International Journal Of Sports Physiology & Performance, 10, 3, pp. 325-331, (2015); Delextrat A., Baker J., Cohen D.D., Clarke N.D., Effect of a simulated soccer match on the functional hamstrings-to-quadriceps ratio in amateur female players, Scandinavian Journal of Medicine & Science in Sports, 23, 4, pp. 478-486, (2013); Delextrat A., Gregory J., Cohen D., The use of the functional H: Q ratio to assess fatigue in soccer, International Journal of Sports Medicine, 31, 3, pp. 192-197, (2010); Ekstrand J., Hagglund M., Walden M., Epidemiology of muscle injuries in professional football (soccer), American Journal of Sports Medicine, 39, 6, pp. 1226-1232, (2011); Frohlich M., Emrich E., Pieter A., Stark R., Outcome effects and effects sizes in sport sciences, International Journal of Sports Science and Engineering, 3, 3, pp. 175-179, (2009); Gabbe B., Bennell K., Finch C., Wajswelner H., Orchard J., Predictors of hamstring injury at the elite level of Australian football, Scandinavian Journal Of Medicine & Science In Sports, 16, 1, pp. 7-13, (2006); Greig M., Siegler J., Soccer-specific fatigue and eccentric hamstring muscle strength, Journal Of Athletic Training (National Athletic’ Association), 44, 2, pp. 180-184, (2009); Haekkinen K., Komi P., Effect of explosive type strength training on electromyographic and force production characteristics of leg extensor muscles during concentric and various stretch-shortening cycle exercises, Scandinavian Journal Of Sports Sciences, 7, 2, pp. 65-76, (1985); Hoff J., Helgerud J., Endurance and strength training for soccer Players: Physiological considerations, Sports Medicine, 34, 3, pp. 165-180, (2004); Lord J., Aitkens S., McCrory M., Bernauer E., Isometric and isokinetic measurement of hamstring and quadriceps strength, Archives Of Physical Medicine & Rehabilitation, 73, 4, pp. 324-330, (1992); Lysholm J., Wiklander J., Injuries in runners/Les lesions des coureurs a pied, American Journal of Sports Medicine, 15, 2, pp. 168-171, (1987); Marshall P.W.M., Lovell R., Jeppesen G.K., Andersen K., Siegler J.C., Hamstring muscle fatigue and central motor output during a simulated soccer match, PLoS One., 9, 7, (2014); Matthews M., Jones P., Cohen D., Matthews H., The assisted nordic hamstring curl, Strength & Conditioning Journal, 37, 1, pp. 84-87, (2015); Mjolsnes R., Arnason A., Osthagen T., Raastad T., Bahr R., A 10-week randomized trial comparing eccentric vs. concentric hamstring strength training in well-trained soccer players, Scandinavian Journal of Medicine & Science in Sports, 14, 5, pp. 311-317, (2004); Orchard J., Seward H., Orchard J., Driscoll T., The speed-fatigue trade off in hamstring etiology: Analysis of 2011 AFL injury data, Sport Health, 31, 3, pp. 53-57, (2013); Petersen J., Thorborg K., Nielsen M.B., Budtz-Jorgensen E., Holmich P., Preventive effect of eccentric training on acute hamstring injuries in men's soccer: A cluster-randomized controlled trial, American Journal of Sports Medicine, 39, 11, pp. 2296-2303, (2011); Proske U., Morgan D.L., Brockett C.L., Percival P., Identifying athletes at risk of hamstring strains and how to protect them, Proceedings of the Australian Physiological and Pharmacological Society, 34, pp. 25-30, (2005); Rahnama N., Reilly T., Lees A., Graham-Smith P., Muscle fatigue induced by exercise simulating the work rate of competitive soccer, Journal of Sports Sciences, 21, 11, (2003); Rhea M.R., Determining the magnitude of treatment effects in strength training research through the use of the effect size, Journal of Strength and Conditioning Research, 18, 4, pp. 918-920, (2004); Sebellien C., Stiller C.H., Maher S.F., Qu X., Effects of implementing nordic hamstring exercises for semi-professional soccer players in Akershus, Norway, Orthopaedic Physical Therapy Practice, 26, 2, pp. 90-97, (2014); Small K., McNaughton R., Greig M., Lohkamp M., Lovell R., Soccer fatigue, sprinting and hamstring injury risk, International Journal of Sports Medicine, 30, 8, pp. 573-578, (2009); Small K., McNaughton L., Greig M., Lovell R., The effects of multidirectional soccer-specific fatigue on markers of hamstring injury risk, Journal of Science & Medicine in Sport, 13, 1, pp. 120-125, (2010); Thorborg K., Why hamstring eccentrics are hamstring essentials, British Journal Of Sports Medicine, 46, 7, pp. 463-465, (2012); Van der Horst H., Wouter Smits D., Petersen J., Goeghart E., Backx F., The preventive effect of the nordic hamstring exercise of hamstring injuries in amateur soccer players: Study protocol for a randomised controlled trial, Injury Prevention, 20, 4, pp. 1-5, (2014); Williams J.D., Abt G., Kilding A.E., Ball-port Endurance and sprint test (BEAST90): Validitiy and reliability of a 90-minute soccer performance test, Journal of Strength & Conditioning Research, 24, 12, pp. 3209-3218, (2010); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., The football association medical research programme: An audit of injuries in professional football - analysis of hamstring injuries, British Journal of Sports Medicine, 38, 1, pp. 36-41, (2004)","M.J. Matthews; University of Salford, School of Health Sciences, Salford, Frederick Road, M6 6PU, United Kingdom; email: m.j.matthews@salford.ac.uk","","Churchill Livingstone","1466853X","","PTSHB","28364615","English","Phys. Ther. Sport","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85016429350" "Celebrini R.G.; Eng J.J.; Miller W.C.; Ekegren C.L.; Johnston J.D.; Macintyre D.L.","Celebrini, Richard G. (54882312000); Eng, Janice J. (7102461610); Miller, William C. (56191693600); Ekegren, Christina L. (34968943200); Johnston, James D. (24483529300); Macintyre, Donna L. (7101720309)","54882312000; 7102461610; 56191693600; 34968943200; 24483529300; 7101720309","The effect of a novel movement strategy in decreasing acl risk factors in female adolescent soccer players","2012","Journal of Strength and Conditioning Research","26","12","","3406","3417","11","22","10.1519/JSC.0b013e3182472fef","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870447985&doi=10.1519%2fJSC.0b013e3182472fef&partnerID=40&md5=666313376de474bb39fbdc63e41fd63b","Graduate Program in Rehabilitation Sciences, University of BC, Vancouver, BC, Canada; Rehabilitation Research Laboratory, GF Strong Rehab Center, Vancouver, BC, Canada; Department of Physical Therapy, University of BC, Vancouver, BC, Canada; Department of Occupational Science and Occupational Therapy, University of BC, Vancouver, BC, Canada; Division of Physiotherapy, School of Health Sciences and Social Care, Brunel University, West London, United Kingdom; Department of Mechanical Engineering, University of Saskatchewan, Saskatoon, SK, Canada","Celebrini R.G., Graduate Program in Rehabilitation Sciences, University of BC, Vancouver, BC, Canada, Rehabilitation Research Laboratory, GF Strong Rehab Center, Vancouver, BC, Canada; Eng J.J., Graduate Program in Rehabilitation Sciences, University of BC, Vancouver, BC, Canada, Rehabilitation Research Laboratory, GF Strong Rehab Center, Vancouver, BC, Canada, Department of Physical Therapy, University of BC, Vancouver, BC, Canada; Miller W.C., Graduate Program in Rehabilitation Sciences, University of BC, Vancouver, BC, Canada, Rehabilitation Research Laboratory, GF Strong Rehab Center, Vancouver, BC, Canada, Department of Physical Therapy, University of BC, Vancouver, BC, Canada, Department of Occupational Science and Occupational Therapy, University of BC, Vancouver, BC, Canada; Ekegren C.L., Division of Physiotherapy, School of Health Sciences and Social Care, Brunel University, West London, United Kingdom; Johnston J.D., Department of Mechanical Engineering, University of Saskatchewan, Saskatoon, SK, Canada; Macintyre D.L., Graduate Program in Rehabilitation Sciences, University of BC, Vancouver, BC, Canada, Rehabilitation Research Laboratory, GF Strong Rehab Center, Vancouver, BC, Canada, Department of Physical Therapy, University of BC, Vancouver, BC, Canada","The effect of a novel movement strategy in decreasing ACL risk factors in female adolescent soccer players. J StrengthCondRes 26(12): 3406-3417, 2012-There is a need to investigate the effect of specific movement strategies in reducing biomechanical risk factors for anterior cruciate ligament injury in young female athletes. The purpose of this study was (a) to determine the feasibility of implementing a novel movement strategy (Core-PAC) into a team warm-up before soccer training based on subject compliance and integration of the Core-PAC into the warm-up and (b) to determine whether the Core-PAC would improve peak knee flexion angles and peak abduction moments at the knee during a side cut (SC) and an unanticipated side cut (USC) before kicking a soccer ball, and a side hop (SH) task after immediate instruction and after a 4-week training program. A convenience sample of ten 14- to 16-year-old female soccer players were instructed in the Core-PAC immediately after baseline testing and during a training program consisting of a 20-minute warm-up, 2 times per week. The Core-PAC was understood and accepted by the subjects and incorporated into their warmup activities with good compliance. After the immediate instruction, there were significant increases in peak knee flexion angles of a mean 6.4° during the SC (p = 0.001), 3.5° during the USC (p = 0.007), and 5.8° during the SH (p < 0.001) tasks. Peak knee abduction moments decreased by a mean of 0.25 N.m.kg-1 during the SC (p , 0.03), 0.17 N.m.kg -1 during the USC (p = 0.05), and 0.27 N.m.kg-1 during the SH (p = 0.04) tasks. After the 4-week training program, some individuals showed improvement. The results of this study suggest that the Core-PAC may be 1 method of modifying highrisk movements for ACL injury such as side cutting and singleleg landing. © 2012 National Strength and Conditioning Association.","Biomechanics; Injury prevention; Knee; Treatment outcome","Adolescent; Algorithms; Anterior Cruciate Ligament; Biomechanics; Feasibility Studies; Female; Humans; Knee Injuries; Physical Education and Training; Questionnaires; Risk Factors; Soccer; adolescent; algorithm; anterior cruciate ligament; article; biomechanics; feasibility study; female; human; injury; knee injury; methodology; physical education; questionnaire; risk factor; soccer","Besier T.F., Lloyd D.G., Ackland T.R., Cochrane J.L., Anticipatory effects on knee joint loading during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1176-1181, (2001); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1168-1175, (2001); Boden B.P., Dean G.S., Feagin Jr. J.A., Garrett Jr. W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Cochrane J.L., Lloyd D.G., Buttfield A., Seward H., McGivern J., Characteristics of anterior cruciate ligament injuries in australian football, J Sci Med Sport, 10, pp. 96-104, (2007); Cowling E.J., Steele J.R., McNair P.J., Effect of verbal instructions on muscle activity and risk of injury to the anterior cruciate ligament during landing, Br J Sports Med, 37, pp. 126-130, (2003); Decker M.J., Torry M.R., Noonan T.J., Riviere A., Sterett W.I., Landing adaptations after acl reconstruction, Med Sci Sports Exerc, 34, pp. 1408-1413, (2002); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Changing sidestep cutting technique reduces knee valgus loading, Am J Sports Med, 37, pp. 2194-2200, (2009); Eng J., Winter D.A., Kinetic analysis of the lower limbs during walking: What information can be gained from a three-dimensional model?, J Biomech, 28, pp. 753-758, (1995); Griffin L.Y., Agel J., Albohm M.J., Arendt E.A., Dick R.W., Garrett W.E., Garrick J.G., Hewett T.E., Huston L., Ireland M.L., Johnson R.J., Kibler W.B., Lephart S., Lewis J.L., Lindenfeld T.N., Mandelbaum B.R., Marchak P., Teitz C.C., Wojtys E.M., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, J Am Acad Orthop Surg, 8, pp. 141-150, (2000); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, J Biomech Eng, 105, pp. 136-144, (1983); Hame S.L., Oakes D.A., Markolf K.L., Injury to the anterior cruciate ligament during alpine skiing: A biomechanical analysis of tibial torque and knee flexion angle, Am J Sports Med, 30, pp. 537-540, (2002); Hartwick M., Meeuwisse W., Vandertuin J., Maitland M., Knee pain in the acl-deficient osteoarthritic knee and its relationship to quality of life, Physiother Res Int, 8, pp. 83-92, (2003); Hewett T.E., Paterno M.V., Myer G.D., Strategies for enhancing proprioception and neuromuscular control of the knee, Clin Orthop Relat Res, 402, pp. 76-94, (2002); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes. Decreased impact forces and increased hamstring torques, Am J Sports Med, 24, pp. 765-773, (1996); Hewett T.E., Torg J.S., Boden B.P., Video analysis of trunk and knee motion during non-contact anterior cruciate ligament injury infemale athletes: Lateral trunk and knee abduction motion are combined components of the injury mechanism, Br J Sports Med, 43, pp. 417-422, (2009); Jacobs C., Mattacola C., Sex differences in eccentric hip-abductor strength and knee-joint kinematics when landing from a jump, J Sport Rehabil, 14, pp. 346-355, (2005); Jian Y., Winter D.A., Ishac M.G., Gilchrist L., Trajectory of the body cog and cop during initiation and termination of gait, Gait Posture, 1, pp. 9-22, (1993); Kibler W.B., Press J., Sciascia A., The role of core stability in athletic function, Sports Med, 36, pp. 189-198, (2006); Koga H., Nakamae A., Shima Y., Iwasa J., Myklebust G., Engebretsen L., Bahr R., Krosshaug T., Mechanisms for noncontact anterior cruciate ligament injuries: Knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, pp. 2218-2225, (2010); Lephart S.M., Abt J.P., Ferris C.M., Sell T.C., Nagai T., Myers J.B., Irrgang J.J., Neuromuscular and biomechanical characteristic changes in high school athletes: A plyometric versus basic resistance program, Br J Sports Med, 39, pp. 932-938, (2005); Lim B.O., Lee Y.S., Kim J.G., An K.O., Yoo J., Kwon Y.H., Effects of sports injury prevention training on the biomechanical risk factors of anterior cruciate ligament injury in high school female basketball players, Am J Sports Med, 37, pp. 1728-1734, (2009); Lohmander L.S., Englund P.M., Dahl L.L., Roos E.M., The long-term consequence of anterior cruciate ligament and meniscus injuries: Osteoarthritis, Am J Sports Med, 35, pp. 1756-1769, (2007); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Knarr J.F., Thomas S.D., Griffin L.Y., Kirkendall D.T., Garrett Jr. W., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes: 2-year followup, Am J Sports Med, 33, pp. 1003-1010, (2005); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, pp. 930-935, (1995); McLean S.G., Walker K.B., Van Den Bogert A.J., Effect of gender on lower extremity kinematics during rapid direction changes: An integrated analysis of three sports movements, J Sci Med Sport, 8, pp. 411-422, (2005); Mizner R.L., Kawaguchi J.K., Chmielewski T.L., Muscle strength in the lower extremity does not predict postinstruction improvements in the landing patterns of female athletes, J Orthop Sports Phys Ther, 38, pp. 353-361, (2008); Myer G.D., Ford K.R., Hewett T.E., Methodological approaches and rationale for training to prevent anterior cruciate ligament injuries in female athletes, Scand J Med Sci Sports, 14, pp. 275-285, (2004); Myklebust G., Engebretsen L., Braekken I.H., Skjolberg A., Olsen O.E., Bahr R., Prevention of anterior cruciate ligament injuries in female team handball players: A prospective intervention study over three seasons, Clin J Sport Med, 13, pp. 71-78, (2003); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med, 32, pp. 1002-1012, (2004); Onate J.A., Guskiewicz K.M., Marshall S.W., Giuliani C., Yu B., Garrett W.E., Instruction of jump-landing technique using videotape feedback: Altering lower extremity motion patterns, Am J Sports Med, 33, pp. 831-842, (2005); Pollard C.D., Sigward S.M., Powers C.M., Gender differences in hip joint kinematics and kinetics during side-step cutting maneuver, Clin J Sport Med, 17, pp. 38-42, (2007); Pollard C.D., Sigward S.M., Powers C.M., Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments, Clin Biomech (Bristol, Avon, 25, pp. 142-146, (2010); Putnam C.A., Sequential motions of body segments in striking and throwing skills: Descriptions and explanations, J Biomech, 26, pp. 125-135, (1993); Renstrom P., Ljungqvist A., Arendt E., Beynnon B., Fukubayashi T., Garrett W., Georgoulis T., Hewett T.E., Johnson R., Krosshaug T., Mandelbaum B., Micheli L., Myklebust G., Roos E., Roos H., Schamasch P., Shultz S., Werner S., Wojtys E., Engebretsen L., Non-contact acl injuries in female athletes: An international olympic committee current concepts statement, Br J Sports Med, 42, pp. 394-412, (2008); Richardson C.A., Jull G.A., Muscle control-pain control. What exercises would you prescribe?, Man Ther, 1, pp. 2-10, (1995); Schmidt R.A., Lee T.D., Motor Control And Learning: A Behavioral Emphasis, (2005); Silvers H.J., Mandelbaum B.R., Prevention of anterior cruciate ligament injury in the female athlete, Br J Sports Med, 41, SUPPL. 1, (2007); Soligard T., Nilstad A., Steffen K., Myklebust G., Holme I., Dvorak J., Bahr R., Andersen T.E., Compliance with a comprehensive warm-up programme to prevent injuries in youth football, Br J Sports Med, 44, pp. 787-793, (2010); Winter D., Biomechanics And Motor Control Of Human Movement, (2004); Wulf G., Lauterbach B., Toole T., The learning advantages of an external focus of attention in golf, Res Q Exerc Sport, 70, pp. 120-126, (1999)","J.J. Eng; Graduate Program in Rehabilitation Sciences, University of BC, Vancouver, BC, Canada; email: janice.eng@ubc.ca","","","10648011","","","22210470","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-84870447985" "van den Tillaar R.; Fuglstad P.","van den Tillaar, Roland (6602938090); Fuglstad, Pål (57191479196)","6602938090; 57191479196","Effect of Instructions Prioritizing Speed or Accuracy on Kinematics and Kicking Performance in Football Players","2017","Journal of Motor Behavior","49","4","","414","421","7","19","10.1080/00222895.2016.1219311","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84990911178&doi=10.1080%2f00222895.2016.1219311&partnerID=40&md5=ab5422f8d54b6ee547249ff987d96ff5","Department of Sports Science and Physical Education, Nord University, Levanger, Norway","van den Tillaar R., Department of Sports Science and Physical Education, Nord University, Levanger, Norway; Fuglstad P., Department of Sports Science and Physical Education, Nord University, Levanger, Norway","The authors' purpose was to investigate if there is a speed accuracy trade-off in soccer kicking by using instructions prioritizing velocity, accuracy, or both upon soccer kicking performance and kicking direction in experienced soccer players. In addition, kinematics were measured to investigate the eventual differences in performance. Thirteen experienced male footballers performed penalty kicks with different instructions prioritizing velocity, accuracy or both. Three-dimensional kinematics, together with maximal ball velocity and hitting accuracy, were measured on all kicks. The main findings were that when the main aim was accuracy, accuracy increased, while the velocity reduced, which supports Fitts' law (Fitts, 1954). In addition, kicking accuracy was higher when kicking to the contralateral side. The slower ball velocity was caused by lower segmental and in run velocities. These lower segmental velocities were mainly caused by the lower maximal knee extension and pelvis rotation during the accuracy priority kicks. © 2017, Copyright © Taylor & Francis Group, LLC.","Fitts' law; kinematics; performance; speed-accuracy trade-off","Adult; Athletic Performance; Biomechanical Phenomena; Humans; Male; Psychomotor Performance; Soccer; Young Adult; football; human; kinematics; knee; pelvis; punishment; rotation; soccer player; adult; athletic performance; biomechanics; male; physiology; psychomotor performance; soccer; young adult","Andersen T., Dorge H., The influence of speed of approach and accuracy constraint on the maximal speed of the ball in soccer kicking, Scandinavian Journal of Medicine and Science in Sports, 21, pp. 79-84, (2011); Cohen J., Statistical power analysis for the behavioral sciences, (1988); Etnyre B.R., Accuracy characteristics of throwing as a result of maximum force effort, Perceptual and Motor Skills, 86, pp. 1211-1217, (1998); Feltner M.E., Dapena J., Three-dimensional interactions in a two-segment kinetic chain. Part I: general model, International Journal of Sports Biomechanics, 5, pp. 403-419, (1989); Fitts P.M., The information capacity of the human motor system in controlling the amplitude of movement, Journal of Experimental Psychology, 47, pp. 381-391, (1954); Hancock G.R., Butler M.S., Fishman M.G., On the problem of two-dimensional error scores: measures and analyses of accuracy, bias, and consistency, Journal of Motor Behavior, 27, pp. 241-250, (1995); Indermill C., Husak W.S., Relationship between speed and accuracy in an overarm throw, Perceptual and Motor Skills, 59, pp. 219-222, (1984); Lees A., Nolan L., Three-dimensional kinematic analysis of the instep kick under speed and accuracy conditions, Science and football IV, pp. 16-21, (2002); Plamondon R., Alimi A.M., Speed/accuracy trade-offs in target-directed movements, Behavioral and Brain Sciences, 20, pp. 279-349, (1997); Rivilla-Garcia R., Sampedro J., Grande I., van den Tillaar R., Influence of opposition on throwing velocity in the handball jump throw, Journal of Sports Sciences and Medicine, 10, pp. 534-539, (2011); Schmidt R.A., Zelaznik H.N., Frank J.S., Sources of inaccuracy in rapid movement, Information processing in motor control and learning, pp. 183-203, (1978); Schmidt R.A., Zelaznik H.N., Hawkins B., Frank J.S., Quinn J.T., Motor output variability: theory for the accuracy of rapid motor acts, Psychological Review, 86, pp. 415-451, (1979); van den Tillaar R., Ettema G., Influence of instruction on velocity and accuracy of overarm throwing, Perceptual and Motor Skills, 96, pp. 423-434, (2003); van den Tillaar R., Ettema G., A comparison between novices and experts in overarm throwing under the influence of type of instruction, Perceptual and Motor Skills, 103, pp. 503-514, (2006); van den Tillaar R., Ettema G., A three-dimensional analysis of overarm throwing in experienced handball players, Journal of Applied Biomechanics, 23, pp. 12-19, (2007); van den Tillaar R., Ettema G., Proximal-to distal sequence in overarm throwing in handball, Journal of Sports Science, 9, pp. 949-955, (2009); van den Tillaar R., Ettema G., A comparison of performance and kinematics in throwing with the dominant and non-dominant arm in handball players, Perceptual and Motor Skills, 109, pp. 315-326, (2009); van den Tillaar R., Ulvik A., Influence of instruction on velocity and accuracy in soccer kicking of experienced soccer players, Journal of Motor Behavior, 46, pp. 243-247, (2014)","R. van den Tillaar; Department of Sports Science and Physical Education, Nord University, Levanger, Odins veg 23, 7603, Norway; email: roland.v.tillaar@nord.no","","Routledge","00222895","","JMTBA","27740895","English","J. Mot. Behav.","Article","Final","","Scopus","2-s2.0-84990911178" "Page R.M.; Marrin K.; Brogden C.M.; Greig M.","Page, Richard M. (56888317900); Marrin, Kelly (26654971000); Brogden, Chris M. (56888703200); Greig, Matt (23034263700)","56888317900; 26654971000; 56888703200; 23034263700","Physical response to a simulated period of soccer-specific fixture congestion","2019","Journal of Strength and Conditioning Research","33","4","","1075","1085","10","18","10.1519/JSC.0000000000002257","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85058804810&doi=10.1519%2fJSC.0000000000002257&partnerID=40&md5=e304b56c8b40c6d30e092335456969bd","Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom","Page R.M., Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom; Marrin K., Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom; Brogden C.M., Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom; Greig M., Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom","Page, RM, Marrin, K, Brogden, CM, and Greig, M. Physical response to a simulated period of soccer-specific fixture congestion. J Strength Cond Res 33(4): 1075-1085, 2019-The aim of this study was to assess the physiological, perceptual, and mechanical measures associated with the completion of a simulated period of short-term soccer-specific fixture congestion. Ten male semiprofessional soccer players completed 3 trials of a treadmill-based match simulation, with 48 hours interspersing each trial. A repeated measures general linear model identified significantly (p = 0.02) lower knee flexor peak torque (PT) recorded at 3008$s21 in the second (141.27 6 28.51 N$m) and third trials (139.12 6 26.23 N$m) when compared with the first trial (154.17 6 35.25 N$m). Similarly, muscle soreness (MS) and PT data recorded at 608$s21 were significantly (p # 0.05) different in the third trial (MS = 42 6 25 a.u; PT60 = 131.10 6 35.38 N$m) when compared with the first trial (MS = 29 6 29 a.u; PT60 = 145.61 6 42.86 N$m). Significant (p = 0.003) differences were also observed for mean electromyography (EMGmean) of bicep femoris between the third trial (T0-15 = 126.36 6 15.57 mV; T75-90 = 52.18 6 17.19 mV) and corresponding time points in the first trial (T0-15 = 98.20 6 23.49 mV; T75-90 = 99.97 6 39.81 mV). Cumulative increases in perceived exertion, heart rate, oxygen consumption, blood lactate concentrations, EMGmean, and PlayerLoad (PL) were recorded across each trial. Muscle soreness and PT were also significantly different after trial. There were, however, no significant main effects or interactions for the salivary immunoglobulin A and the medial-lateral PL metrics. These data suggest a biomechanical and muscular emphasis with residual fatigue, with implications for injury risk and the development of recovery strategies. © 2017 National Strength and Conditioning Association","Biomechanics; Electromyography; Isokinetic; Physiology; PlayerLoad; Recovery","Adult; Electromyography; Exercise Test; Hamstring Muscles; Heart Rate; Humans; Immunoglobulin A; Knee Joint; Lactic Acid; Male; Muscle Fatigue; Myalgia; Oxygen Consumption; Physical Exertion; Quadriceps Muscle; Saliva; Soccer; Torque; Young Adult; immunoglobulin A; lactic acid; adult; blood; electromyography; exercise; exercise test; hamstring muscle; heart rate; human; knee; male; metabolism; muscle fatigue; myalgia; oxygen consumption; pathophysiology; physiology; quadriceps femoris muscle; saliva; soccer; torque; young adult","Barrett S., Midgley A., Lovell R., Playerload: Reliability, convergent validity, and influence of unit position during treadmill running, Int J Sports Physiol Perform, 9, pp. 945-952, (2014); Borg G., Perceived exertion as an indicator of somatic stress, Scand J Rehabil Med, 2, pp. 92-98, (1970); Boyd L.J., Ball K., Aughey R.J., The reliability of MinimaxX accelerometers for measuring physical activity in Australian football, Int J Sports Physiol Perform, 6, pp. 311-321, (2011); Carling C., Dupont G., Are declines in physical performance associated with a reduction in skill related performance during professional soccer match-play?, J Sports Sci, 29, pp. 63-71, (2011); Carling C., Gregson W., McCall A., Moreira A., Wong D.P., Bradley P.S., Match running performance during fixture congestion in elite soccer: Research issues and future directions, Sports Med, 45, pp. 605-613, (2015); Carling C., Le Gall F., Dupont G., Are physical performance and injury risk in a professional soccer team in match-play affected over a prolonged period of fixture congestion?, Int J Sports Med, 33, pp. 36-42, (2012); Carling C., McCall A., Le Gall F., Dupont G., What is the extent of exposure to periods of match congestion in professional soccer players?, J Sport Sci, 33, pp. 2116-2124, (2015); Carling C., Orhant E., Legall F., Match injuries in professional soccer: Inter-seasonal variation and effects of competition type, match congestion and positional role, Int J Sports Med, 31, pp. 271-276, (2010); Chen T.C., Nosaka K., Responses of elbow flexors to two strenuous eccentric exercise bouts separated by three days, J Strength Cond Res, 20, pp. 108-116, (2006); Cobley J.N., McGlory C., Morton J.P., Close G.L., N-Acetylcysteine's attenuation of fatigue after repeated bouts of intermittent exercise: Practical implications for tournament situations, Int J Sport Nutr Exerc Metab, 21, pp. 451-461, (2011); Cormack S.J., Mooney M.G., Morgan W., McGuigan M.R., Influence of neuromuscular fatigue on accelerometer load in elite Australian football players, Int J Sports Physiol Perform, 8, pp. 373-378, (2013); Dellal A., Lago-Penas C., Rey E., Chamari K., Orhant E., The effects of a congested fixture period on physical performance, technical activity and injury rate during matches in a professional soccer team, Br J Sports Med, 49, pp. 390-394, (2015); Dupont G., Nedelec M., McCall A., McCormack D., Berthoin S., Wisloff U., Effect of 2 soccer matches in a week on physical performance and injury rate, Am J Sports Med, 38, pp. 1752-1758, (2010); Ekstrand J., Hagglund M., Walden M., Epidemiology of muscle injuries in professional football (soccer), Am J Sports Med, 39, pp. 1226-1232, (2011); Eston R., Byrne C., Twist C., Muscle function after exercise-induced muscle damage: Considerations for athletic performance in children and adults, J Exerc Sci Fit, 1, pp. 85-96, (2003); Folgado H., Duarte R., Marques P., Sampaio J., The effects of congested fixture period on tactical and physical performance in elite football, J Sports Sci, 33, pp. 1238-1247, (2015); Greig M., McNaughton L.R., Lovell R.J., Physiological and mechanical response to soccer-specific intermittent activity and steady-state activity, Res Sports Med, 14, pp. 29-52, (2006); Greig M., The influence of soccer-specific fatigue on peak isokinetic torque production of the knee flexors and extensors, Am J Sports Med, 36, pp. 1403-1409, (2008); 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Lago-Penas C., Rey E., Lago-Ballesteros J., Casais L., Dominquez E., The influence of a congested calendar on physical performance in elite soccer, J Strength Cond Res, 25, pp. 2111-2117, (2011); Marshall P.W.M., Lovell R., Jeppesen G.K., Andersen K., Siegler J.C., Hamstring muscle fatigue and central motor output during a simulated soccer match, PLoS One, 9, (2014); McCall A., Carling C., Nedelec M., Davidson M., Le Gall F., Berthoin A., Dupont G., Risk factors, testing and preventative strategies for non-contact injuries in professional football: Current perceptions and practices of teams from various premier league teams, Br J Sports Med, 48, pp. 1352-1357, (2015); Mohr M., Draganidis D., Chatzinikolaou A., Barbero-Alvarez J.C., Castagna C., Douroudos I., Avloniti A., Margeli A., Papassotiriou I., Flouris A.D., Jamurtas A.Z., Krustrup P., Fatouros I.G., Muscle damage, inflammatory, immune and performance responses to three football games in 1 week in competitive Male players, Eur J Appl Physiol, 116, pp. 179-193, (2015); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, J Sports Sci, 21, pp. 519-528, (2003); Mortatti A.L., Moreira A., Aoki M.S., Crewther B.T., Castagna C., De Arruda A.F.S., Filho J.M., Effect of competition on salivary cortisol and immunoglobulin A, and upper respiratory tract infections in elite young soccer players, J Strength Cond Res, 26, pp. 1396-1401, (2012); Nedelec M., McCall A., Carling C., Legall F., Berthoin S., Dupont G., Recovery in soccer: Part II-Recovery strategies, Sports Med, 43, pp. 9-22, (2013); Odetoyinbo K., Wooster B., Lane A., The effect of a succession of matches on the activity profiles of professional soccer players, Science and Football VI, pp. 105-108, (2007); Orchard J.W., Driscoll T., Seward H., Orchard J.J., Relationship between interchange usage and risk of hamstring injuries in the Australian Football League, J Sci Med Sport, 15, pp. 201-206, (2012); Page R., Marrin K., Brogden C., Greig M., Biomechanical and physiological response to a contemporary soccer match-play simulation, J Strength Cond Res, 29, pp. 2860-2866, (2015); Page R., Marrin K., Brogden C., Greig M., The biomechanical and physiological response to repeated soccer-specific simulations interspersed by 48 or 72 hours recovery, Phys Ther Sport, 22, pp. 81-87, (2016); Rae D.E., Stephenson K.J., Roden L.C., Factors to consider when assessing diurnal variation in sports performance-The influence of chronotype and habitual training time-of-day, Eur J App Physiol, 115, pp. 1339-1349, (2015); Rahnama N., Reilly T., Lees A., Graham-Smith P., Muscle fatigue induced by exercise simulating the work rate of competitive soccer, J Sports Sci, 21, pp. 933-942, (2003); Rampinini E., Bosio A., Ferraresi I., Petruolo A., Morelli A., Sassi A., Match-related fatigue in soccer players, Med Sci Sports Exerc, 43, pp. 2161-2170, (2011); Rhea M.R., Landers D.M., Alvar B.A., Arent S.M., The effects of competition and the presence of an audience on weight lifting performance, J Strength Cond Res, 17, pp. 303-306, (2003); Rollo I., Impellizzeri F.M., Zago M., Laia F.M., Effects of 1 versus 2 games a week on physical and subjective scores of subelite soccer players, Int J Sports Physiol Perform, 9, pp. 425-431, (2014); Sari-Sarraf V., Reilly T., Doran D.A., Atkinson G., The effects of single and repeated bouts of soccer-specific exercise on salivary IgA, Arch Oral Biol, 52, pp. 526-532, (2007); Small K., McNaughton L.R., Greig M., Lohkamp M., Lovell R., Soccer fatigue, sprinting, and hamstring injury risk, Int J Sports Med, 30, pp. 573-578, (2009); Spencer M., Lawrence S., Rechichi C., Bishop D., Dawson B., Goodman C., Time-motion analysis of elite field hockey, with special reference to repeated-sprint activity, J Sports Sci, 22, pp. 843-850, (2004); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer: An update, Sports Med, 35, pp. 501-536, (2005); Winchester R., Turner L.A., Thomas K., Ansley L., Thompson K.G., Mickelwright D., St Clair Gibson A., Observer effects on the rating of perceived exertion and affect during exercise in recreationally active males, Percep Mot Skills, 115, pp. 213-227, (2012)","R.M. Page; Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom; email: Pager@edgehill.ac.uk","","NSCA National Strength and Conditioning Association","10648011","","","29023324","English","J. Strength Cond. Res.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85058804810" "Taylor J.B.; Ford K.R.; Schmitz R.J.; Ross S.E.; Ackerman T.A.; Shultz S.J.","Taylor, Jeffrey B. (55829673200); Ford, Kevin R. (7102539333); Schmitz, Randy J. (7102530016); Ross, Scott E. (57000613600); Ackerman, Terry A. (16404476400); Shultz, Sandra J. (57206316430)","55829673200; 7102539333; 7102530016; 57000613600; 16404476400; 57206316430","Biomechanical differences of multidirectional jump landings among female basketball and soccer players","2017","Journal of Strength and Conditioning Research","31","11","","3034","3045","11","24","10.1519/JSC.0000000000001785","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044136157&doi=10.1519%2fJSC.0000000000001785&partnerID=40&md5=a87f34db93397fa5876e2a4a27a82fdf","Department of Physical Therapy, High Point University, High Point, NC, United States; Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, United States; Department of Educational Research Methodology, University of North Carolina at Greensboro, Greensboro, NC, United States","Taylor J.B., Department of Physical Therapy, High Point University, High Point, NC, United States, Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, United States; Ford K.R., Department of Physical Therapy, High Point University, High Point, NC, United States; Schmitz R.J., Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, United States; Ross S.E., Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, United States; Ackerman T.A., Department of Educational Research Methodology, University of North Carolina at Greensboro, Greensboro, NC, United States; Shultz S.J., Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, United States","Taylor, JB, Ford, KR, Schmitz, RJ, Ross, SE, Ackerman, TA, and Shultz, SJ. Biomechanical differences of multidirectional jump landings among female basketball and soccer players. J Strength Cond Res 31(11): 3034–3045, 2017—Anterior cruciate ligament (ACL) injury prevention programs are less successful in basketball than soccer and may be due to distinct movement strategies that these athletes develop from sport-specific training. The purpose of this study was to identify biomechanical differences between female basketball and soccer players during multidirectional jump landings. Lower extremity biomechanics of 89 female athletes who played competitive basketball (n = 40) or soccer (n = 49) at the middle- or high-school level were analyzed with 3-dimensional motion analysis during a drop vertical jump, double- (SAG-DL) and single-leg forward jump (SAG-SL), and double- (FRONT-DL) and single-leg (FRONT-SL) lateral jump. Basketball players landed with either less hip or knee, or both hip and knee excursion during all tasks (p # 0.05) except for the SAGSL task, basketball players landed with greater peak hip flexion angles (p = 0.04). The FRONT-SL task elicited the most distinct sport-specific differences, including decreased hip adduction (p, 0.001) angles, increased hip internal rotation (p = 0.003), and increased relative knee external rotation (p = 0.001) excursions in basketball players. In addition, the FRONT-SL task elicited greater forces in knee abduction (p = 0.003) and lesser forces in hip adduction (p = 0.001) and knee external rotation (p, 0.001) in basketball players. Joint energetics were different during the FRONT-DL task, as basketball players exhibited less sagittal plane energy absorption at the hip (p, 0.001) and greater hip (p, 0.001) and knee (p = 0.001) joint stiffness. Sport-specific movement strategies were identified during all jump landing tasks, such that soccer players exhibited a more protective landing strategy than basketball players, justifying future efforts toward sport-specific ACL injury prevention programs. © 2017 National Strength and Conditioning Association.","Frontal plane; Injury risk; Single-leg; Sport-specific","Adolescent; Anterior Cruciate Ligament Injuries; Athletes; Basketball; Biomechanical Phenomena; Female; Hip Joint; Humans; Knee Joint; Lower Extremity; Movement; Range of Motion, Articular; Rotation; Soccer; Sports Medicine; adolescent; anterior cruciate ligament injury; athlete; basketball; biomechanics; female; hip; human; joint characteristics and functions; knee; lower limb; movement (physiology); pathophysiology; physiology; rotation; soccer; sports medicine","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A 13-year review, Am J Sports Med, 33, pp. 524-530, (2005); 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Granan L.P., Inacio M.C., Maletis G.B., Funahashi T.T., Engebretsen L., Sport-specific injury pattern recorded during anterior cruciate ligament reconstruction, Am J Sports Med, 41, pp. 2814-2818, (2013); Harris P.A., Taylor R., Thielke R., Payne J., Gonzalez N., Conde J.G., Research electronic data capture (REDCap)—a metadata-driven methodology and workflow process for providing translational research informatics support, J Biomed Inform, 42, pp. 377-381, (2009); Hashemi J., Breighner R., Chandrashekar N., Hardy D.M., Chaudhari A.M., Shultz S.J., Slauterbeck J.R., Beynnon B.D., Hip extension, knee flexion paradox: A new mechanism for non-contact ACL injury, J Biomech, 44, pp. 577-585, (2011); Herrington L., Knee valgus angle during landing tasks in female volleyball and basketball players, J Strength Cond Res, 25, pp. 262-266, (2011); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Van Den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Hewett T.E., Torg J.S., Boden B.P., Video analysis of trunk and knee motion during non-contact anterior cruciate ligament injury in female athletes: Lateral trunk and knee abduction motion are combined components of the injury mechanism, Br J Sports Med, 43, pp. 417-422, (2009); Hootman J.M., Dick R., Agel J., Epidemiology of collegiate injuries for 15 sports: Summary and recommendations for injury prevention initiatives, J Athl Train, 42, pp. 311-319, (2007); Jones P.A., Herrington L.C., Munro A.G., Graham-Smith P., Is there a relationship between landing, cutting, and pivoting tasks in terms of the characteristics of dynamic valgus?, Am J Sports Med, 42, pp. 2095-2102, (2014); Koga H., Nakamae A., Shima Y., Iwasa J., Myklebust G., Engebretsen L., Bahr R., Krosshaug T., Mechanisms for noncontact anterior cruciate ligament injuries: Knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, pp. 2218-2225, (2010); Kristianslund E., Krosshaug T., Comparison of drop jumps and sport-specific sidestep cutting: Implications for anterior cruciate ligament injury risk screening, Am J Sports Med, 41, pp. 684-688, (2013); Krosshaug T., Nakamae A., Boden B.P., Engebretsen L., Smith G., Slauterbeck J.R., Hewett T.E., Bahr R., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, Am J Sports Med, 35, pp. 359-367, (2007); LaBella C.R., Huxford M.R., Grissom J., Kim K.Y., Peng J., Christoffel K.K., Effect of neuromuscular warm-up on injuries in female soccer and basketball athletes in urban public high schools: Cluster randomized controlled trial, Arch Pediatr Adolesc Med, 165, pp. 1033-1040, (2011); Matthew D., Delextrat A., Heart rate, blood lactate concentration, and time-motion analysis of female basketball players during competition, J Sports Sci, 27, pp. 813-821, (2009); Michaelidis M., Koumantakis G.A., Effects of knee injury primary prevention programs on anterior cruciate ligament injury rates in female athletes in different sports: A systematic review, Phys Ther Sport, 15, pp. 200-210, (2013); Munro A., Herrington L., Comfort P., Comparison of landing knee valgus angle between female basketball and football athletes: Possible implications for anterior cruciate ligament and patellofemoral joint injury rates, Phys Ther Sport, 13, pp. 259-264, (2012); O'Brien J., Finch C.F., The implementation of musculoskeletal injury-prevention exercise programmes in team ball sports: A systematic review employing the RE-AIM framework, Sports Med, 44, pp. 1305-1318, (2014); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med, 32, pp. 1002-1012, (2004); Padua D.A., Marshall S.W., Boling M.C., Thigpen C.A., Garrett W.E., Beutler A.I., The landing error scoring system (LESS) is a valid and reliable clinical assessment tool of jump-landing biomechanics: The JUMP-ACL study, Am J Sports Med, 37, pp. 1996-2002, (2009); Piasecki D.P., Spindler K.P., Warren T.A., Andrish J.T., Parker R.D., Intraarticular injuries associated with anterior cruciate ligament tear: Findings at ligament reconstruction in high school and recreational athletes. An analysis of sex-based differences, Am J Sports Med, 31, pp. 601-605, (2003); Prodromos C.C., Han Y., Rogowski J., Joyce B., Shi K., A meta-analysis of the incidence of anterior cruciate ligament tears as a function of gender, sport, and a knee injury-reduction regimen, Arthroscopy, 23, pp. 1320-1325, (2007); Quatman C.E., Hewett T.E., The anterior cruciate ligament injury controversy: Is “valgus collapse” a sex-specific mechanism?, Br J Sports Med, 43, pp. 328-335, (2009); Sakane M., Livesay G.A., Fox R.J., Rudy T.W., Runco T.J., Woo S.L., Relative contribution of the ACL, MCL, and bony contact to the anterior stability of the knee, Knee Surg Sports Traumatol Arthrosc, 7, pp. 93-97, (1999); Schmitz R.J., Shultz S.J., Nguyen A.D., Dynamic valgus alignment and functional strength in males and females during maturation, J Athl Train, 44, pp. 26-32, (2009); Shimokochi Y., Shultz S.J., Mechanisms of noncontact anterior cruciate ligament injury, J Athl Train, 43, pp. 396-408, (2008); Sinsurin K., Vachalathiti R., Jalayondeja W., Limroongreungrat W., Different sagittal angles and moments of lower extremity joints during single-leg jump landing among various directions in basketball and volleyball athletes, J Phys Ther Sci, 25, pp. 1109-1113, (2013); Taylor J.B., Ford K.R., Nguyen A.D., Shultz S.J., Biomechanical comparison of single- and double-leg jump landings in the sagittal and frontal plane, Orthop J Sports Med, 4, (2016); Taylor J.B., Ford K.R., Nguyen A.D., Terry L.N., Hegedus E.J., Prevention of lower extremity injuries in basketball: A systematic review and meta-analysis, Sports Health, 7, pp. 392-398, (2015); Taylor J.B., Waxman J.P., Richter S.J., Shultz S.J., Evaluation of the effectiveness of anterior cruciate ligament injury prevention programme training components: A systematic review and meta-analysis, Br J Sports Med, 49, pp. 79-87, (2015); Waters E., Suggestions from the field for return to sports participation following anterior cruciate ligament reconstruction: Basketball, J Orthop Sports Phys Ther, 42, pp. 326-336, (2012)","J.B. Taylor; Department of Physical Therapy, High Point University, High Point, United States; email: jtaylor@highpoint.edu","","NSCA National Strength and Conditioning Association","10648011","","","29065078","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-85044136157" "Räty H.P.; Battié M.C.; Videman T.; Sarna S.","Räty, Heli P. (6603820878); Battié, Michele C. (57207595231); Videman, Tapio (7006756308); Sarna, S. (7103058531)","6603820878; 57207595231; 7006756308; 7103058531","Lumbar mobility in former élite male weight-lifters, soccer players, long-distance runners and shooters","1997","Clinical Biomechanics","12","5","","325","330","5","23","10.1016/S0268-0033(97)00011-9","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0031194759&doi=10.1016%2fS0268-0033%2897%2900011-9&partnerID=40&md5=dc2e2fc990147695cf81328bf949209a","Department of Public Health, University of Helsinki, Helsinki, Finland; Unit for Sports and Exercise Medicine, Institute of Biomedicine, University of Helsinki, Helsinki, Finland; Research Center for Sport and Health Sciences, Jyväskylä, Finland; University of Alberta, Edmonton, Alta., Canada; University of Jyväskylä, Jyväskylä, Finland; Department of Public Health, University of Helsinki, Finland","Räty H.P., Department of Public Health, University of Helsinki, Helsinki, Finland, Unit for Sports and Exercise Medicine, Institute of Biomedicine, University of Helsinki, Helsinki, Finland, Research Center for Sport and Health Sciences, Jyväskylä, Finland, Department of Public Health, University of Helsinki, Finland; Battié M.C., University of Alberta, Edmonton, Alta., Canada; Videman T., University of Alberta, Edmonton, Alta., Canada, University of Jyväskylä, Jyväskylä, Finland; Sarna S., Department of Public Health, University of Helsinki, Helsinki, Finland","Objective. To investigate the long-term effects of different loading conditions in sports and work on lumbar mobility. Design. Factors associated with lumbar mobility were sought by examining sports experience, occupational history, back pain history, anthropometric characteristics, and lumbar magnetic resonance images in 114 former Finnish male élite athletes: 30 soccer players, 29 weight-lifters, 27 long-distance runners, and 28 shooters, aged 45-68 yr. Background. Back pain and aging reduce spinal mobility, whereas some sports may increase it. Little is known about the effects of common loading conditions found in work and sports, that do not require extremes of spinal motion on lumbar mobility later in life. Methods. Sports and occupational histories were obtained from a standardized interview. Lumbar mobility was measured by the flexicurve method. Disc degeneration was evaluated from lumbar magnetic resonance images. The results were analysed with analysis of variance and covariance and multiple regression models. Results. The athlete groups did not differ significantly in lumbar sagittal mobility. Higher body-mass index was associated with less flexion, reduced disc height with less extension, as was a high lifetime number of low back pain episodes. Occupations characterized by varying work postures and light lifting were associated with greater mobility, and heavy work with lesser mobility. Conclusions. Participation in sports with clearly different loading patterns, that do not emphasize extremes of spinal range of motion, do not appear to lead to significant differences in back mobility in later adulthood, but occupational loading factors and disc height narrowing appear to influence spinal mobility. Relevance This study adds to knowledge about long-term effects of high-level sports participation and other factors on spinal mobility. The loading and stretching, common in many sports, do not seem to affect spinal mobility significantly in later adulthood. © 1997 Elsevier Science Ltd. All rights reserved.","Flexibility; Intervertebral disc degeneration; Low back pain; Occupational loading; Physical activity; Spine; Sports","Anthropometry; Magnetic resonance imaging; Mathematical models; Occupational risks; Regression analysis; Sports medicine; adult; aged; anthropometric parameters; article; athlete; biomechanics; body mass; body posture; finland; football; human; human experiment; intervertebral disk degeneration; interview; low back pain; lumbar spine; male; multiple regression; normal human; nuclear magnetic resonance imaging; occupation; physical activity; priority journal; running; weight lifting; Lumbar mobility; Biomechanics","Triano J.J., Schultz A.B., Correlation of objective measure of trunk motion and muscle function with low-back disability ratings, Spine, 12, pp. 561-565, (1987); Burton A.K., Tillotson K.M., Troup J.D.G., Variation in lumbar sagittal mobility with low-back trouble, Spine, 14, pp. 584-590, (1989); Pope M.H., Bevins T., Wildner D.G., Frymoyer J.W., The relationship between anthropometric, postural, muscular, and mobility characteristics of males aged 18-55, Spine, 10, pp. 644-648, (1985); Troup J.D.G., Foreman T.K., Baxter C.E., Brown D., The perception of back pain and the role of psychophysical tests of lifting capacity. 1987 Volvo Award of Clinical Sciences, Spine, 12, pp. 645-657, (1987); Mellin G., Correlations of spinal mobility with degree of chronic low back pain after correction for age and anthropometric factors, Spine, 12, pp. 464-468, (1987); Battle M.C., Bigos S.J., Sheehy A., Wortley M.D., Spinal flexibility, and individual factors that influence it, Phys Ther, 67, pp. 653-658, (1987); Battie M.C., Cherkin D.C., Dunn R., Ciol M.A., Wheeler K.J., Managing low back pain: Attitudes and treatment preferences of physical therapists, Phys Ther, 74, pp. 219-226, (1994); Battie M.C., Bigos S.J., Fisher L.D., Et al., The role of spinal flexibility in back pain complaints within industry: A prospective study, Spine, 15, 8, pp. 768-773, (1990); Kujala U.M., Taimela S., Salminen J.J., Oksanen A., Baseline anthropometry, flexibility and strength characteristics and future low back pain in adolescent athletes and non-athletes. a prospective one-year follow-up study, Scand J Med Sci Sports, 4, pp. 200-205, (1994); Ekstrand J., Gillquist J., The frequency of muscle tightness and injuries in soccer players, Am J Sports Med, 10, pp. 75-78, (1982); Chang D.E., Buschbacher L.P., Edlich R.F., Limited joint mobility in power lifters, Am J Sports Med, 16, pp. 280-284, (1988); Sward L., Eriksson B., Peterson L., Anthropometric characteristics, passive hip flexion, and spinal mobility in relation to back pain in athletes, Spine, 15, pp. 376-382, (1990); Kirby R.L., Simms F.C., Symington V.J., Garner J.B., Flexibility and musculoskeletal symptomatology of female gymnasts and age-matched controls, Am J Sports Med, 9, pp. 160-164, (1981); Burton A.K., Tillotson K., M. Does leisure sports activity influence lumbar mobility or the risk of low back trouble?, J Spinal Disord, 4, pp. 329-336, (1991); Sarna S., Sahi T., Koskenvuo M., Kaprio J., Increased life expectancy of world-class male athletes, Med Sci Sports Exerc, 25, pp. 237-244, (1993); Burton A.K., Regional lumbar sagittal mobility: Measurement by flexicurves, Clin Biomech, 1, pp. 20-26, (1986); Hyytiainen K., Salminen J., Suvitie T., Wikstrom G., Pentti J., Reproducibility of nine tests to measure spinal mobility and trunk muscle strength, Scand J Rehabil Med, 23, pp. 3-10, (1991); Videman T., Sarna S., Battle M.C., Et al., The long-term effects of physical loading and exercise lifestyles on back-related symptoms, disability, and spinal pathology among men, Spine, 20, pp. 699-709, (1995); BMDP Statistical Software Manual, 1-2, (1992); Raty H.P., Kujala U.M., Videman T., Battie M.C., Impivaara O., Sarna S., Lifetime musculoskeletal symptoms and injuries among former elite male athletes, Int J Sports Med, (1996); Burton A.K., Tillotson K.M., Reference values for 'normal' regional lumbar sagittal mobility, Clin Biomech, 3, pp. 106-113, (1988); Gibbons L.E., Battie M.C., Videman T., Changes in occupational physical loading during the lifetimes of Finnish men, Scand J Work Environ Health, 21, pp. 208-214, (1995); Burton A.K., Battie M.C., Gibbons L., Videman T., Tillotson K.M., Lumbar disc degeneration and sagittal flexibility, J Spinal Disord, 9, pp. 418-424, (1996); Kellgren J.H., Lawrence J.S., Osteo-arthrosis and disk degeneration in an urban population, Ann Rheum Dis, 17, (1958); Videman T., Nurminen M., Troup J.D.G., Lumbar spinal pathology in cadaveric material in relation to history of back pain, occupation, and physical loading, Spine, 15, 8, pp. 728-740, (1990); Battie M.C., Videman T., Gibbons L.E., Fisher L.D., Manninen H., Gill K., Determinants of lumbar disc degeneration: A study relating lifetime exposures and magnetic resonance imaging findings in identical twins, Spine, 20, pp. 2601-2612, (1995); Work Practices Guide for Manual Lifting, (1981)","","","Elsevier Ltd","02680033","","CLBIE","","English","Clin. Biomech.","Article","Final","","Scopus","2-s2.0-0031194759" "Requena B.; Garcia I.; Requena F.; Bressel E.; Saez-Saez de Villarreal E.; Cronin J.","Requena, Bernardo (8268059700); Garcia, Inmaculada (57197982697); Requena, Francisco (57225816614); Bressel, Eadric (6603039075); Saez-Saez de Villarreal, Eduardo (55253657300); Cronin, John (7103340842)","8268059700; 57197982697; 57225816614; 6603039075; 55253657300; 7103340842","Association between traditional standing vertical jumps and a soccer-specific vertical jump","2014","European Journal of Sport Science","14","SUPPL.1","","S398","S405","7","17","10.1080/17461391.2012.708790","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893068347&doi=10.1080%2f17461391.2012.708790&partnerID=40&md5=b71b7df9eb54611fda3f237c0f6320bd","University of Pablo de Olavide, Seville, Spain; Department of Orthopaedics and Traumatology, University of Granada, Granada, Spain; Biomechanics Laboratory, Utah State University, Logan, UT, United States; Sport Performance Research Institute New Zealand, AUT University, Auckland, New Zealand","Requena B., University of Pablo de Olavide, Seville, Spain; Garcia I., University of Pablo de Olavide, Seville, Spain; Requena F., Department of Orthopaedics and Traumatology, University of Granada, Granada, Spain; Bressel E., Biomechanics Laboratory, Utah State University, Logan, UT, United States; Saez-Saez de Villarreal E., University of Pablo de Olavide, Seville, Spain; Cronin J., Sport Performance Research Institute New Zealand, AUT University, Auckland, New Zealand","The present study aimed to determine the relationships between a soccer-specific vertical jump (ssVJ) test, that included common elements of a soccer VJ (e.g. run-up and intention to head), and three traditional VJ tests using elite soccer players. A secondary purpose of this study was to determine the reliability of the VJs used in the analysis. A randomised order and counterbalanced design was used to assess the relationships between these VJs [countermovement jump (CMJ), drop jump for height (DJh), drop jump for maximum height and minimum ground contact time (DJh/t) and the ssVJ]. Take-off velocity, contact time and flight time were the dependent variables of interest and compared between jumps. Intra-class correlation coefficient (ICC) and coefficient of variation (CV) were used as measures of inter-session reliability. All VJ tests were found to have high ICCs (0.89-0.99) and acceptable within-subject CVs (<7.5%). All the ssVJ dependent variables were not significantly related (r<0.44) with similar variables from the CMJ and DJh tests and only moderately related (r=~0.49) with the DJh/t test variables. In addition, the DJh/t variables were not significantly correlated (r<0.47) with DJh and CMJ test variables. In conclusion, it would seem that the proposed ssVJ test and CMJ or DJh tests assess different leg qualities and thought should be given before using them interchangeably to assess or develop the same performance measures (i.e. velocity at take-off or jump height). © 2014 Copyright European College of Sport Science.","biomechanics; elite soccer players; jump height; Muscle strength; sport performance","Accelerometry; Adult; Athletes; Athletic Performance; Biomechanical Phenomena; Humans; Male; Monitoring, Ambulatory; Movement; Muscle Strength; Soccer; Young Adult; accelerometry; adult; ambulatory monitoring; article; athlete; athletic performance; biomechanics; human; male; movement (physiology); muscle strength; physiology; soccer; young adult","Arteaga R., Dorado C., Chavarren J., Calbet A.L., Reliability of jumping performance in active men and women under different stretch loading conditions, Journal of Sports Medicine and Physical Fitness, 40, pp. 36-44, (2000); Bobbert M.F., Dependence of human squat jump performance on the series elastic compliance of the trices surae: A simulation study, Journal of Experimental Biology, 204, pp. 533-542, (2001); Bobbert M.F., Huijing P.A., Van Ingen Schenau G.J., Drop jumping I. The influence of jumping technique on the biomechanics of jumping, Medicine Science of Sports Exercise, 19, pp. 332-338, (1987); Brodt V., Wagner D.R., Heath E.M., Countermovement vertical jump with drop step is higher than without in collegiate football players, Journal of Strength and Conditioning Research, 22, pp. 1382-1385, (2008); Bueno J., Observational analysis of jumping and landing techniques in elite male soccer players, (2010); Chardonnens J., Favre J., Le Callennec B., Cuendet F., Gremion G., Aminian K., Automatic measurement of key ski jumping phases and temporal events with a wearable system, Journal of Sports Sciences, 30, pp. 53-61, (2012); Erkmen N., Evaluating the heading in professional soccer players by playing position, Journal of Strength and Conditioning Research, 23, pp. 1723-1728, (2009); Gissis I., Papadopoulos C., Kalapotharakos V.I., Sotiropoulos A., Komsis G., Manolopoulos E., Strength and speed characteristics of elite, subelite, and recreational young soccer players, Research in Sports Medicine, 14, pp. 205-214, (2006); Gutierrez-Davila M., Campos J., Navarro E., A comparison of two landing styles in a two-foot vertical jump, Journal of Strength and Conditioning of Research, 23, pp. 325-331, (2009); Ham D.J., Knez W.L., Young W.B., A deterministic model of vertical jump: Implications for training, Journal of Strength and Conditioning Research, 21, pp. 967-972, (2007); Hopkins W., Measures of reliability in sports medicine and science, Sports Medicine, 30, pp. 1-15, (2000); Hopkins W., Schabort E., Hawley J., Reliability of power in physical performance tests, Sports Medicine, 31, pp. 211-234, (2001); Kirkendall D.T., Garrett W.E., Heading in soccer: Integral skill or grounds for cognitive dysfunction?, Journal of Athletic Training, 36, pp. 328-333, (2001); Laffaye G., Barde B., Taiar R., Upper limb motion and drop jump: Effect of expertise, Journal of Sports Medicine and Physical Fitness, 46, pp. 238-247, (2006); Markovic G., Dizdar D., Jukic I., Cardinale M., Reliability and factorial validity of squat and countermovement jump tests, Journal of Strength and Conditioning Research, 18, pp. 551-555, (2004); Meylan C., McMaster T., Cronin J., Mohammad N.I., Rogers C., deKlerk M., Single-leg lateral, horizontal, and vertical jump assessment: Reliability, interrelationships, and ability to predict sprint and change-of-direction performance, Journal of Strength and Conditioning Research, 23, pp. 1140-1147, (2009); Miura K., Yamamoto M., Tamaki H., Zushi K., Determinants of the abilities to jump higher and shorten the contact time in a running 1-legged vertical jump in basketball, Journal of Strength and Conditioning Research, 24, pp. 201-206, (2010); Newton R., Gerber A., Nimphius S., Shim J., Doan B., Robertson M., Determination of functional strength imbalances of the lower extremities, Journal of Strength and Conditioning Research, 20, pp. 971-977, (2006); Picerno P., Camomilla V., Capranica L., Countermovement jump performance assessment using a wearable 3D inertial measurement unit, Journal of Sports Science, 29, 2, pp. 139-146, (2011); Requena B., Requena F., Garcia I., Saez-Saez de Villarreal E., Paasuke M., Reliability and validity of a wireless MEMs based system (Keimove™) for measuring vertical jumping performance, Journal of Sports Science and Medicine, 11, pp. 31-39, (2012); Schmidtbleicher D., Training for power events, The encyclopedia of sports medicine. Vol. 3: Strength and power in sport, pp. 169-179, (1992); Sheppard J.M., Croning J.B., Gabbett T.J., McGuigan M.R., Etxeberria N., Newton R.U., Relative importance of strength, power, and anthropometric measures to jump performance of elite volleyball players, Journal of Strength and Conditioning Research, 22, pp. 758-765, (2008); Sheppard J.M., Gabbett T.J., Stanganelli L.C., An analysis of playing positions in elite mem's volleyball: Considerations for competition demands and physiologic characteristics, Journal of Strength and Conditioning Research, 23, pp. 1858-1866, (2009); Slinde F., Suber C., Suber L., Edwen C.E., Svantesson U., Test-retest reliability of three different countermovement jumping tests, Journal of Strength and Conditioning Research, 22, pp. 640-644, (2008); Stephens T.M., Lawson B., DeVoe D., Reiser R.F., Gender and bilateral differences in single-leg countermovement jump performance with comparison to a double-leg jump, Journal of Applied Biomechanics, 3, pp. 190-202, (2007); Straume-Naesheim T.M., Andersen T.E., Dvorak J., Bahr R., Effects of heading exposure and previous concussions on neuro-phychological performance among Norwegian elite footballers, British Journal of Sports Medicine, 39, pp. 70-77, (2005); Van Soest A.J., Roebroeck M.E., Bobbert M.F., Huijing P.A., Van Ingen Shenau G.J., A comparison of one-legged and two-legged countermovement jumps, Medicine Science of Sports Exercise, 17, pp. 635-639, (1995); Vint P.F., Hinrichs R.N., Differences between one-foot and two-foot vertical jump performances, Journal of Applied Biomechanics, 12, pp. 338-358, (1996); Wisloff U., Castagna C., Helgerud J., Jones R., Hoff J., Strong correlation of maximal squat strength with sprint performance and vertical jump height in elite soccer players, British Journal of Sports Medicine, 38, pp. 285-288, (2004); Young W., Specificity of strength development for improving the takeoff ability in jumping events, Modern Athlete and Coach, 33, pp. 3-8, (1995); Young W.B., McDonald C., Flowers M.A., Validity of double- and single-leg vertical jumps as tests of leg extensor muscle function, Journal of Strength and Conditioning Research, 15, pp. 6-11, (2001); Young W., McDonald C., Heggen T., Fitzpatrick J., An evaluation of the specificity, validity and reliability of jumping tests, Journal of Sports Medicine and Physical Fitness, 37, pp. 240-245, (1997); Young W., Wilson G., Byrne C., Relationship between strength and performance in standing and run-up vertical jumps, Journal of Sports Medicine and Physical Fitness, 39, pp. 285-293, (1999)","B. Requena; University of Pablo de Olavide, 41013 Seville, Ctra. de Utrera Km 1, Spain; email: breqsan@upo.es","","","15367290","","","24444234","English","Eur. J. Sport Sci.","Article","Final","","Scopus","2-s2.0-84893068347" "Butler R.J.; Russell M.E.; Queen R.","Butler, R.J. (7401524529); Russell, M.E. (55927791000); Queen, R. (24503786500)","7401524529; 55927791000; 24503786500","Effect of soccer footwear on landing mechanics","2014","Scandinavian Journal of Medicine and Science in Sports","24","1","","129","135","6","18","10.1111/j.1600-0838.2012.01468.x","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892883241&doi=10.1111%2fj.1600-0838.2012.01468.x&partnerID=40&md5=10e98730fe6c5861872f755ebb4a6713","Physical Therapy Division, Duke University, Durham, NC, United States; Department of Orthopedic Surgery, Duke University, Durham, NC, United States; Michael W. Krzyzewski Human Performance Lab, Duke University, Durham, NC, United States","Butler R.J., Physical Therapy Division, Duke University, Durham, NC, United States; Russell M.E., Department of Orthopedic Surgery, Duke University, Durham, NC, United States, Michael W. Krzyzewski Human Performance Lab, Duke University, Durham, NC, United States; Queen R., Department of Orthopedic Surgery, Duke University, Durham, NC, United States, Michael W. Krzyzewski Human Performance Lab, Duke University, Durham, NC, United States","Lower-extremity injury is common in soccer. A number of studies have begun to assess why specific lower-extremity injuries occur. However, currently few studies have examined how footwear affects lower-extremity mechanics. In order to address this question, 14 male (age: 22.1±3.9 years, height: 1.77±0.06m, and mass: 73.3±11.5kg) and 14 female (age: 22.8±3.1 years, height: 1.68±0.07m and mass: 64.4±9.2kg) competitive soccer players underwent a motion analysis assessment while performing a jump heading task. Each subject performed the task in three different footwear conditions (running shoe, bladed cleat, and turf shoe). Two-way analyses of variance were used to examine statistical differences in landing mechanics between the footwear conditions while controlling for gender differences. These comparisons were made during two different parts (prior to and following) of a soccer-specific jump heading task. A statistically significant interaction for the peak dorsiflexion angle (P=0.02) and peak knee flexion angle (P=0.05) was observed. Male soccer players exhibited a degree increase in dorsiflexion in the bladed cleat while female soccer players exhibited a three-degree reduction in peak knee flexion in the bladed cleat condition. Other main effects for gender and footwear were also observed. The results suggest that landing mechanics differ based upon gender, footwear, and the type of landing. Therefore, training interventions aimed at reducing lower-extremity injury should consider utilizing sport-specific footwear when assessing movement patterns. © 2012 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.","Artificial turf; Biomechanics; Football; Gender; injury prevention","Adolescent; Adult; Ankle Injuries; Ankle Joint; Biomechanical Phenomena; Female; Hip Joint; Humans; Knee Injuries; Knee Joint; Male; Sex Factors; Shoes; Soccer; Young Adult; artificial turf; biomechanics; football; gender; injury prevention; accident prevention; adolescent; adult; ankle; ankle injury; article; artificial turf; biomechanics; female; football; gender; hip; human; knee; knee injury; male; physiology; sex difference; shoe; soccer; young adult","Arner O., Lindholm A., Subcutaneous rupture of the Achilles tendon, Acta Chir Scand, 239, pp. 7-51, (1959); Barber-Westin S.D., Noyes F.R., Smith S.T., Campbell T.M., Reducing the risk of noncontact anterior cruciate ligament injuries in the female athlete, Phys Sportsmed, 37, pp. 49-61, (2009); Beutler A.I., De La Motte S.J., Marshall S.W., Padua D., Boden B., Muscle strength and qualitative jump-landing differences in male and female military cadets: the jump-ACL study, J Sports Sci Med, 8, pp. 663-671, (2009); Brizuela G., Llana S., Ferrandis R., Garcia-Belenguer A.C., The influence of basketball shoes with increased ankle support on shock attenuation and performance in running and jumping, J Sports Sci, 15, pp. 505-515, (1997); Butler R.J., Davis I.S., Hamill J., Interaction of arch type and footwear on running mechanics, Am J Sports Med, 34, pp. 1998-2005, (2006); Butler R.J., Hamill J., Davis I., Effect of footwear on high and low arched runners' mechanics during a prolonged run, Gait Posture, 26, pp. 219-225, (2007); Caraffa A., Cerulli G., Projetti M., Aisa G., Rizzo A., Prevention of anterior cruciate ligament injuries in soccer: a prospective controlled study of proprioceptive training, Knee Surg Sports Traumatol Arthrosc, 4, pp. 19-21, (1996); Chappell J.D., Creighton R.A., Giuliani C., Yu B., Garrett W.E., Kinematics and electromyography of landing preparation in vertical stop-jump: risks for noncontact anterior cruciate ligament injury, Am J Sports Med, 35, pp. 235-241, (2007); Cheung R.T., Ng G.Y., Influence of different footwear on force of landing during running, Phys Ther, 88, pp. 620-628, (2008); Clarke T.E., Frederick E.C., Hamill C.L., The effects of shoe design parameters on rearfoot control in running, Med Sci Sports Exerc, 15, pp. 376-381, (1983); deKoning J.J., Nigg B.M., Kinematic factors affecting impact peak vertical ground reaction force in running, J Biomech, 27, (1994); Devita P., Skelly W.A., Effect of landing stiffness on joint kinetics and energetics in the lower extremity, Med Sci Sports Exerc, 24, pp. 108-115, (1992); Ferris D.P., Louie M., Farley C.T., Running in the real world: adjusting leg stiffness for different surfaces, Proc R Soc Lond B Biol Sci, 265, pp. 989-994, (1998); Ford K.R., Myer G.D., Smith R.L., Byrnes R.N., Dopirak S.E., Hewett T.E., Use of an overhead goal alters vertical jump performance and biomechanics, J Strength Cond Res, 19, pp. 394-399, (2005); Goldman E.F., Jones D.E., Interventions for preventing hamstring injuries, 1, (2010); Hamill J., Bates B.T., Holt K.G., Timing of lower extremity joint actions during treadmill running, Med Sci Sports Exerc, 24, pp. 807-813, (1992); Hennig E.M., The influence of soccer shoe design on player performance and injuries, Res Sports Med, 19, pp. 186-201, (2011); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J Bone Joint Surg Am, 86, pp. 1601-1608, (2004); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., van McLean S.G., denBogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Hewett T.E., Myer G.D., Ford K.R., Slauterbeck J.R., Preparticipation physical examination using a box drop vertical jump test in young athletes: the effects of puberty and sex, Clin J Sport Med, 16, pp. 298-304, (2006); Kerdok A., Biewener A.A., McMahon T.A., Weyand P.G., Herr H.M., Energetics and mechanics of human running on surfaces of different stiffnesses, J Appl Physiol, 92, pp. 469-478, (2002); Kong P.W., Candelaria N.G., Smith D.R., Running in new and worn shoes: a comparison of three types of cushioning footwear, Br J Sports Med, 43, pp. 745-749, (2009); Kulas A.S., Schmitz R.J., Schultz S.J., Watson M.A., Perrin D.H., Energy absorption as a predictor of leg impedance in highly trained females, J Appl Biomech, 22, pp. 177-185, (2006); Lephart S., Ferris C., Riemann B., Gender differences in strength and lower extremity kinematics during landing, Clin Orthop Relat Res, 401, pp. 162-169, (2002); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech, 16, pp. 438-445, (2001); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Knarr J.F., Thomas S.D., Griffin L.Y., Kirkendall D.T., Garrett W.E., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes: 2-year follow up, Am J Sports Med, 33, pp. 1003-1010, (2005); Marshall S.W., Guskiewicz K.M., Sports and recreational injury: the hidden cost of a healthy lifestyle, Inj Prev, 9, pp. 100-102, (2003); Morio C., Lake M.J., Gueguen N., Rao G., Baly L., The influence of footwear on foot motion during walking and running, J Biomech, 42, pp. 2081-2088, (2009); Myer G.D., Chu D.A., Brent J.L., Hewett T.E., Trunk and hip control neuromuscular training for the prevention of knee joint injury, Clin Sports Med, 27, pp. 425-448, (2008); Oliver G.D., Stone A.J., Booker J.M., Plummer H.A., A kinematic and kinetic analysis of drop landings in military boots, J R Army Med Corps, 157, pp. 218-221, (2011); Perry S.D., Lafortune M.A., Influences of inversion/eversion of the foot upon impact loading during locomotion, Clin Biomech, 10, pp. 253-257, (1995); Queen R.M., Abbey A.N., Wiegerinck J.I., Yoder J.C., Nunley J.A., Effect of shoe type on plantar pressure: a gender comparison, Gait Posture, 31, pp. 18-22, (2010); Sims E.L., Hardaker W.M., Queen R.M., Gender differences in plantar loading during three soccer-specific tasks, Br J Sports Med, 42, pp. 272-277, (2008); Sinclair J., Bottoms L., Taylor K., Greenhalgh A., Tibial shock measured during the fencing lunge: the influence of footwear, Sports Biomech, 9, pp. 65-71, (2010); Smith G., Watanatada P., Adjustment to vertical displacement and stiffness with changes to running footwear stiffness, Med Sci Sports Exerc, 34, (2002); Smith N., Dyson R., Janaway L., Ground reaction force measures when running in soccer boots and soccer training shoes on a natural turf surface, Sports Eng, 3, pp. 159-167, (2004); van Gent R.N., van Siem D., van Middelkoop M., Os A.G., Bierma-Zeinstra S.M., Koes B.W., Incidence and determinants of lower extremity running injuries in long distance runners: a systematic review, Br J Sports Med, 41, pp. 469-480, (2007); Wannop J.W., Worobets J.T., Stefanyshyn D.J., Footwear traction and lower extremity joint loading, Am J Sports Med, 38, pp. 1221-1228, (2010); Weinhandl J.T., Joshi M., O'Connor K.M., Gender comparisons between unilateral and bilateral landings, J Appl Biomech, 26, pp. 444-453, (2010)","R.J. Butler; Duke University, Durham, NC 27705, DUMC 104002, United States; email: robert.butler@duke.edu","","","16000838","","SMSSE","22515407","English","Scand. J. Med. Sci. Sports","Article","Final","","Scopus","2-s2.0-84892883241" "Myer G.D.; Ford K.R.; Foss K.D.B.; Rauh M.J.; Paterno M.V.; Hewett T.E.","Myer, Gregory D. (6701852696); Ford, Kevin R. (7102539333); Foss, Kim D. Barber (6507308390); Rauh, Mitchell J. (7004242306); Paterno, Mark V. (6602774922); Hewett, Timothy E. (7005201943)","6701852696; 7102539333; 6507308390; 7004242306; 6602774922; 7005201943","A predictive model to estimate knee-abduction moment: Implications for development of a clinically applicable patellofemoral pain screening tool in female athletes","2014","Journal of Athletic Training","49","3","","389","398","9","20","10.4085/1062-6050-49.2.17","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84905817722&doi=10.4085%2f1062-6050-49.2.17&partnerID=40&md5=e9c2901cce6dacb731cbd45a1ab398f8","Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, 3333 Burnet Avenue, MLC 10001, United States; Department of Pediatrics, College of Medicine, University of Cincinnati, OH, United States; Department of Orthopaedic Surgery, College of Medicine, University of Cincinnati, OH, United States; Micheli Center for Sports Injury Prevention, Waltham, MA, United States; Sports Health and Performance Institute, Ohio State University Medical Center, Columbus, United States; Department of Physical Therapy, School of Health Sciences, High Point University, NC, United States; Physical Therapy Program, School of Exercise and Nutritional Sciences, San Diego State University, CA, United States; Departments of Athletic Training, Orthopaedic and Sport Sciences, and Pediatric Science, Rocky Mountain University of Health Professions, Provo, UT, United States; Division of Occupational Therapy and Physical Therapy, Cincinnati Children's Hospital Medical Center, OH, United States; Athletic Training Division, School of Allied Medical Professions, Ohio State University, Columbus, United States; Ohio State University Sports Medicine, Health and Performance Institute, Departments of Physiology and Cell Biology, Orthopaedic Surgery, and Family Medicine, School of Allied Medical Professions and Biomedical Engineering, Columbus, United States","Myer G.D., Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, 3333 Burnet Avenue, MLC 10001, United States, Department of Pediatrics, College of Medicine, University of Cincinnati, OH, United States, Department of Orthopaedic Surgery, College of Medicine, University of Cincinnati, OH, United States, Micheli Center for Sports Injury Prevention, Waltham, MA, United States, Sports Health and Performance Institute, Ohio State University Medical Center, Columbus, United States; Ford K.R., Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, 3333 Burnet Avenue, MLC 10001, United States, Department of Pediatrics, College of Medicine, University of Cincinnati, OH, United States, Department of Physical Therapy, School of Health Sciences, High Point University, NC, United States; Foss K.D.B., Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, 3333 Burnet Avenue, MLC 10001, United States; Rauh M.J., Physical Therapy Program, School of Exercise and Nutritional Sciences, San Diego State University, CA, United States; Paterno M.V., Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, 3333 Burnet Avenue, MLC 10001, United States, Department of Pediatrics, College of Medicine, University of Cincinnati, OH, United States, Departments of Athletic Training, Orthopaedic and Sport Sciences, and Pediatric Science, Rocky Mountain University of Health Professions, Provo, UT, United States, Division of Occupational Therapy and Physical Therapy, Cincinnati Children's Hospital Medical Center, OH, United States; Hewett T.E., Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, 3333 Burnet Avenue, MLC 10001, United States, Department of Pediatrics, College of Medicine, University of Cincinnati, OH, United States, Department of Orthopaedic Surgery, College of Medicine, University of Cincinnati, OH, United States, Athletic Training Division, School of Allied Medical Professions, Ohio State University, Columbus, United States, Ohio State University Sports Medicine, Health and Performance Institute, Departments of Physiology and Cell Biology, Orthopaedic Surgery, and Family Medicine, School of Allied Medical Professions and Biomedical Engineering, Columbus, United States","Context: Prospective measures of high external kneeabduction moment (KAM) during landing identify female athletes at increased risk of patellofemoral pain (PFP). A clinically applicable screening protocol is needed. Objective: To identify biomechanical laboratory measures that would accurately quantify KAM loads during landing that predict increased risk of PFP in female athletes and clinical correlates to laboratory-based measures of increased KAM status for use in a clinical PFP injury-risk prediction algorithm. We hypothesized that we could identify clinical correlates that combine to accurately determine increased KAM associated with an increased risk of developing PFP. Design: Descriptive laboratory study. Setting: Biomechanical laboratory. Patients or Other Participants: Adolescent female basketball and soccer players (n = 698) from a single-county public school district. Main Outcome Measure(s): We conducted tests of anthropometrics, maturation, laxity, flexibility, strength, and landing biomechanics before each competitive season. Pearson correlation and linear and logistic regression modeling were used to examine high KAM (>15.4 Nm) compared with normal KAM as a surrogate for PFP injury risk. Results: The multivariable logistic regression model that used the variables peak knee-abduction angle, center-of-mass height, and hip rotational moment excursion predicted KAM associated with PFP risk (>15.4 NM of KAM) with 92% sensitivity and 74% specificity and a C statistic of 0.93. The multivariate linear regression model that included the same predictors accounted for 70% of the variance in KAM. We identified clinical correlates to laboratory measures that combined to predict high KAM with 92% sensitivity and 47% specificity. The clinical prediction algorithm, including knee-valgus motion (odds ratio [OR]=1.46, 95% confidence interval [CI]=1.31, 1.63), center-ofmass height (OR = 1.21, 95% CI = 1.15, 1.26), and hamstrings strength/body fat percentage (OR = 1.80, 95% CI = 1.02, 3.16) predicted high KAM with a C statistic of 0.80. Conclusions: Clinical correlates to laboratory-measured biomechanics associated with an increased risk of PFP yielded a highly sensitive model to predict increased KAM status. This screening algorithm consisting of a standard camcorder, physician scale for mass, and handheld dynamometer may be used to identify athletes at increased risk of PFP. © by the National Athletic Trainers' Association, Inc.","Assessment tools; High-risk biomechanics; Knee injury prevention; Patellofemoral risk factors; Targeted neuromuscular training","Adolescent; Adult; Algorithms; Arthralgia; Basketball; Biomechanical Phenomena; Female; Hip; Humans; Knee Joint; Logistic Models; Mass Screening; Models, Biological; Models, Statistical; Movement; Pain Measurement; Predictive Value of Tests; Prospective Studies; ROC Curve; Rotation; Sensitivity and Specificity; Soccer; Weight-Bearing; Young Adult; adolescent; adult; algorithm; arthralgia; basketball; biological model; biomechanics; devices; female; hip; human; injuries; knee; mass screening; movement (physiology); pain measurement; pathophysiology; physiology; predictive value; procedures; prospective study; receiver operating characteristic; rotation; sensitivity and specificity; soccer; statistical model; weight bearing; young adult","Fairbank J.C., Pynsent P.B., Van Poortvliet J.A., Phillips H., Mechanical factors in the incidence of knee pain in adolescents and young adults, J Bone Joint Surg Br, 66, 5, pp. 685-693, (1984); Blond L., Hansen L., Patellofemoral pain syndrome in athletes: A 5.7- year retrospective follow-up study of 250 athletes, Acta Orthop Belg, 64, 4, pp. 393-400, (1998); Fulkerson J.P., Arendt E.A., Anterior knee pain in females, Clin Orthop Relat Res, 372, pp. 69-73, (2000); Myer G.D., Ford K.R., Barber Foss K.D., Et al., The incidence and potential pathomechanics of patellofemoral pain in female athletes, Clin Biomech (Bristol, Avon), 25, 7, pp. 700-707, (2010); Myer G.D., Ford K.R., Hewett T.E., Quantification of knee load associated with increased risk for specific knee injury incidence [abstract], J Athl Train, 46, 3, (2011); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Biomechanics laboratory-based prediction algorithm to identify female athletes with high knee loads that increase risk of acl injury, Br J Sports Med, 45, 4, pp. 245-252, (2011); Ford K.R., Myer G.D., Hewett T.E., Reliability of landing 3d motion analysis: Implications for longitudinal analyses, Med Sci Sports Exerc, 39, 11, pp. 2021-2028, (2007); Quatman C.E., Ford K.R., Myer G.D., Paterno M.V., Hewett T.E., The effects of gender and pubertal status on generalized joint laxity in young athletes, J Sci Med Sport, 11, 3, pp. 257-263, (2008); Myer G.D., Ford K.R., Paterno M.V., Nick T.G., Hewett T.E., The effects of generalized joint laxity on risk of anterior cruciate ligament injury in young female athletes, Am J Sports Med, 36, 6, pp. 1073-1080, (2008); Myer G.D., Ford K.R., Barber Foss K.D., Liu C., Nick T.G., Hewett T.E., The relationship of hamstrings and quadriceps strength to anterior cruciate ligament injury in female athletes, Clin J Sport Med, 19, 1, pp. 3-8, (2009); Brent J., Myer G.D., Ford K.R., Paterno M., Hewett T., The effect of sex and age on isokinetic hip-abduction torques, J Sport Rehabil, 22, 1, pp. 41-46, (2013); Myer G.D., Brent J.L., Ford K.R., Hewett T.E., A pilot study to determine the effect of trunk and hip focused neuromuscular training on hip and knee isokinetic strength, Br J Sports Med, 42, 7, pp. 614-619, (2008); 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Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc, 33, 7, pp. 1168-1175, (2001); Li G., Rudy T.W., Sakane M., Kanamori A., Ma C.B., Woo S.L., The importance of quadriceps and hamstring muscle loading on knee kinematics and in-situ forces in the acl, J Biomech, 32, 4, pp. 395-400, (1999); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Development and validation of a clinic-based prediction tool to identify female athletes at high risk for anterior cruciate ligament injury, Am J Sports Med, 38, 10, pp. 2025-2033, (2010); Palmieri-Smith R.M., McLean S.G., Ashton-Miller J.A., Wojtys E.M., Association of quadriceps and hamstrings cocontraction patterns with knee joint loading, J Athl Train, 44, 3, pp. 256-263, (2009); Myer G.D., Ford K.R., Hewett T.E., The effects of gender on quadriceps muscle activation strategies during a maneuver that mimics a high acl injury risk position, J Electromyogr Kinesiol, 15, 2, pp. 181-189, (2005); Quatman C.E., Kiapour A., Myer G.D., Et al., Cartilage pressure distributions provide a footprint to define female anterior cruciate ligament injury mechanisms, Am J Sports Med, 39, 8, pp. 1706-1713, (2011); Beynnon B.D., Fleming B.C., Anterior cruciate ligament strain in-vivo: A review of previous work, J Biomech, 31, 6, pp. 519-525, (1998); Ford K.R., Myer G.D., Schmitt L.C., Uhl T.L., Hewett T.E., Preferential quadriceps activation in female athletes with incremental increases in landing intensity, J Appl Biomech, 27, 3, pp. 215-222, (2011); Barber Foss K.D., Hornsby M., Edwards N.M., Myer G.D., Hewett T.E., Is body composition associated with an increased risk of developing anterior knee pain in adolescent female athletes?, Phys Sportsmed, 40, 1, pp. 13-19, (2012); Lee S.P., Powers C., Association between functional hip abductor strength and hip joint kinematics and kinetics during a dynamic unipedal drop landing task, 35th Annual Meeting of the American Society of Biomechanics, (2011); Beynnon B., Slauterbeck J., Padua D., Et al., Update on acl risk factors and prevention strategies in the female athlete, 52nd Annual Meeting and Clinical Symposia of the National Athletic Trainers' Association;, (2001); Pataky T.C., Zatsiorsky V.M., Challis J.H., A simple method to determine body segment masses in vivo: Reliability, accuracy, and sensitivity analysis, Clin Biomech (Bristol, Avon), 18, 4, pp. 364-368, (2003); Quatman C.E., Ford K.R., Myer G.D., Hewett T.E., Maturation leads to gender differences in landing force and vertical jump performance: A longitudinal study, Am J Sports Med, 34, 5, pp. 806-813, (2006); Padua D.A., Marshall S.W., Beutler A.I., Et al., Predictors of knee valgus angle during a jump-landing task [abstract], Med Sci Sports Exerc, 37, 5, (2005); Myer G.D., Ford K.R., Palumbo J.P., Hewett T.E., Neuromuscular training improves performance and lower-extremity biomechanics in female athletes, J Strength Cond Res, 19, 1, pp. 51-60, (2005); Labella C.R., Huxford M.R., Smith T.L., Cartland J., Preseason neuromuscular exercise program reduces sports-related knee pain in female adolescent athletes, Clin Pediatr (Phila), 48, 3, pp. 327-330, (2009); Myer G.D., Ford K.R., Brent J.L., Hewett T.E., Differential neuromuscular training effects on acl injury risk factors in ""high-risk"" versus ""low-risk"" athletes, BMC Musculoskelet Disord, 8, (2007); Witvrouw E., Lysens R., Bellemans J., Et al., Intrinsic risk factors for the development of anterior knee pain in an athletic population: A two-year prospective study, Am J Sports Med, 28, 4, pp. 480-489, (2000)","G.D. Myer; Sports Medicine Biodynamics Center, Human Performance Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, 3333 Burnet Avenue, MLC 10001, United States; email: greg.myer@cchmc.org","","National Athletic Trainers' Association Inc.","10626050","","JATTE","24762234","English","J. Athl. Train.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-84905817722" "Fadillioglu C.; Stetter B.J.; Ringhof S.; Krafft F.C.; Sell S.; Stein T.","Fadillioglu, Cagla (57218158086); Stetter, Bernd J. (56644688500); Ringhof, Steffen (56514077900); Krafft, Frieder C. (56533822200); Sell, Stefan (7102838970); Stein, Thorsten (14055037900)","57218158086; 56644688500; 56514077900; 56533822200; 7102838970; 14055037900","Automated gait event detection for a variety of locomotion tasks using a novel gyroscope-based algorithm","2020","Gait and Posture","81","","","102","108","6","20","10.1016/j.gaitpost.2020.06.019","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85088147850&doi=10.1016%2fj.gaitpost.2020.06.019&partnerID=40&md5=d0f60b346c89bf822deb78c4ede1dd5e","Institute of Sports and Sports Science, Karlsruhe Institute of Technology, Engler-Bunte-Ring 15, Karlsruhe, 76131, Germany; Department of Sport and Sport Science, University of Freiburg, Schwarzwaldstr. 175, Freiburg, 79117, Germany; Joint Center Black Forest, Hospital Neuenbuerg, Neuenbuerg, 75305, Germany","Fadillioglu C., Institute of Sports and Sports Science, Karlsruhe Institute of Technology, Engler-Bunte-Ring 15, Karlsruhe, 76131, Germany; Stetter B.J., Institute of Sports and Sports Science, Karlsruhe Institute of Technology, Engler-Bunte-Ring 15, Karlsruhe, 76131, Germany; Ringhof S., Institute of Sports and Sports Science, Karlsruhe Institute of Technology, Engler-Bunte-Ring 15, Karlsruhe, 76131, Germany, Department of Sport and Sport Science, University of Freiburg, Schwarzwaldstr. 175, Freiburg, 79117, Germany; Krafft F.C., Institute of Sports and Sports Science, Karlsruhe Institute of Technology, Engler-Bunte-Ring 15, Karlsruhe, 76131, Germany; Sell S., Institute of Sports and Sports Science, Karlsruhe Institute of Technology, Engler-Bunte-Ring 15, Karlsruhe, 76131, Germany, Joint Center Black Forest, Hospital Neuenbuerg, Neuenbuerg, 75305, Germany; Stein T., Institute of Sports and Sports Science, Karlsruhe Institute of Technology, Engler-Bunte-Ring 15, Karlsruhe, 76131, Germany","Background: The robust identification of initial contact (IC) and toe-off (TO) events is a vital task in mobile sensor-based gait analysis. Shank attached gyroscopes in combination with suitable algorithms for data processing can robustly and accurately complete this task for gait event detection. However, little research has considered gait detection algorithms that are applicable to different locomotion tasks. Research question: Does a gait event detection algorithm for various locomotion tasks provide comparable estimation accuracies as existing task-specific algorithms? Methods: Thirteen males, equipped with a gyroscope attached to the right shank, volunteered to perform nine different locomotion tasks consisting of linear movements and movements with a change of direction. A rule-based algorithm for IC and TO events was developed based on the shank sagittal plane angular velocity. The algorithm was evaluated against events determined by vertical ground reaction force. Absolute mean error (AME), relative absolute mean error (RAME) and Bland–Altman analysis was used to assess its accuracy. Results: The average AME and RAME were 11 ± 3 ms and 3.07 ± 1.33 %, respectively, for IC and 29 ± 11 ms and 7.27 ± 2.92 %, respectively, for TO. Alterations of the walking movement, such as turns and types of running, slightly reduced the accuracy of IC and TO detection. In comparison to previous methods, increased or comparable accuracies for both IC and TO detection are shown. Significance: The study shows that the proposed algorithm is capable of detecting gait events for a variety of locomotion tasks by means of a single gyroscope located on the shank. In consequence, the algorithm can be applied to activities, which consist of various movements (e.g., soccer). Ultimately, this extends the use of mobile sensor-based gait analysis. © 2020 Elsevier B.V.","Initial contact; Linear movements; Rule-based algorithm; Toe-off; Turning conditions; Wearable sensors","Adult; Algorithms; Biomechanical Phenomena; Female; Gait; Gait Analysis; Humans; Locomotion; Male; adult; algorithm; Article; detection algorithm; error; gait; ground reaction force; human; human experiment; locomotion; male; normal human; priority journal; running; velocity; walking; biomechanics; female; gait; locomotion; physiology; procedures","Chen S., Lach J., Lo B., Yang G.Z., Toward pervasive gait analysis with wearable sensors: a systematic review, IEEE J. Biomed. Heal. Informatics, 20, pp. 1521-1537, (2016); Bergamini E., Picerno P., Pillet H., Natta F., Thoreux P., Camomilla V., Estimation of temporal parameters during sprint running using a trunk-mounted inertial measurement unit, J. 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Biomech., 35, pp. 689-699, (2002); Jasiewicz J.M., Allum J.H.J., Middleton J.W., Barriskill A., Condie P., Purcell B., Li R.C.T., Gait event detection using linear accelerometers or angular velocity transducers in able-bodied and spinal-cord injured individuals, Gait Posture, 24, pp. 502-509, (2006); Morgan D.W., Martin P.E., Krahenbuhl G.S., Baldini F.D., Variability in running economy and mechanics among trained male runners, Med. Sci. Sport. Exerc., 23, pp. 378-383, (1991)","B.J. Stetter; Institute of Sports and Sports Science, Karlsruhe Institute of Technology, Karlsruhe, Engler-Bunte-Ring 15, 76131, Germany; email: bernd.stetter@kit.edu","","Elsevier B.V.","09666362","","GAPOF","32707401","English","Gait Posture","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85088147850" "Charlot K.; Zongo P.; Leicht A.S.; Hue O.; Galy O.","Charlot, Keyne (35408525100); Zongo, Paul (56609159600); Leicht, Anthony Scott (6507370714); Hue, Olivier (7006395821); Galy, Olivier (55953483000)","35408525100; 56609159600; 6507370714; 7006395821; 55953483000","Intensity, recovery kinetics and well-being indices are not altered during an official FIFA futsal tournament in Oceanian players","2016","Journal of Sports Sciences","34","4","","379","388","9","21","10.1080/02640414.2015.1056822","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85027939053&doi=10.1080%2f02640414.2015.1056822&partnerID=40&md5=e6c1b482ccf0ae6f8e120d9c41838ac6","Laboratory ACTES, (EA 3596), University of Guadeloupe, Pointe à Pitre, Guadeloupe, France; UMR Inserm U1134 University of Guadeloupe, Pointe à Pitre, Guadeloupe, France; Laboratory LIRE, Research unit of ESPE, University of New Caledonia, Noumea, New Caledonia; College of Healthcare Sciences, Division of Tropical Health and Medicine, James Cook University, Townsville, QLD, Australia","Charlot K., Laboratory ACTES, (EA 3596), University of Guadeloupe, Pointe à Pitre, Guadeloupe, France, UMR Inserm U1134 University of Guadeloupe, Pointe à Pitre, Guadeloupe, France; Zongo P., Laboratory ACTES, (EA 3596), University of Guadeloupe, Pointe à Pitre, Guadeloupe, France, Laboratory LIRE, Research unit of ESPE, University of New Caledonia, Noumea, New Caledonia; Leicht A.S., College of Healthcare Sciences, Division of Tropical Health and Medicine, James Cook University, Townsville, QLD, Australia; Hue O., Laboratory ACTES, (EA 3596), University of Guadeloupe, Pointe à Pitre, Guadeloupe, France; Galy O., Laboratory LIRE, Research unit of ESPE, University of New Caledonia, Noumea, New Caledonia","Physiological responses (intensity and recovery kinetics) and well-being indices were examined during a 4-day FIFA international tournament. Ten outfield New Caledonian players (age: 25.5 ± 3.8 years; height: 170 ± 7 cm; weight: 70.7 ± 8.6 kg) were assessed during the four matches. Players’ aerobic and anaerobic capacities were measured before the tournament while heart rate (HR), intra-matches recovery and well-being indices (Hooper index) were measured throughout the tournament. HR (168 ± 8 bpm), exercise intensity (83.4 ± 2.3% of HR reserve) and recovery indices were similar throughout the tournament. Well-being indices were largely alike during the tournament while rating of perceived exertion increased throughout the tournament that was not associated with HR or well-being indices. High aerobic and anaerobic capacities were associated with high match intensities and slow recovery indices. In summary, match intensity assessed by HR, recovery kinetics and well-being of Oceanian futsal players were not modified during a 4-day FIFA futsal tournament. Assessment of aerobic and anaerobic capacities may be useful to select players for optimal performance during this type of international tournament. © 2015 Taylor & Francis.","ethnicity; Hooper index; Melanesian; New Caledonia; rating of perceived exertion; repeated sprint ability; soccer; South Pacific","Adult; Anthropometry; Athletic Performance; Biomechanical Phenomena; Competitive Behavior; Exercise Test; Heart Rate; Humans; Male; Oceania; Perception; Physical Exertion; Soccer; Young Adult; adult; anthropometry; athletic performance; biomechanics; competitive behavior; exercise; exercise test; heart rate; human; male; Pacific islands; perception; physiology; soccer; young adult","Aubry A., Hausswirth C., Louis J., Coutts A.J., Le Meur Y., Functional overreaching: The key to peak performance during the taper?, Medicine & Science in Sports & Exercise, 46, 9, pp. 1769-1777, (2014); Bangsbo J., The physiology of soccer – With special reference to intense intermittent exercise, Acta Physiologica Scandinavica. 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Foster C., Florhaug J.A., Franklin J., Gottschall L., Hrovatin L.A., Parker S., Dodge C., A new approach to monitoring exercise training, Journal of Strength and Conditioning Research/National Strength & Conditioning Association, 15, 1, pp. 109-115, (2001); Freitas V.H., De Souza E.A., Oliveira R.S., Pereira L.A., Nakamura F.Y., Efeito de quatro dias consecutivos de jogos sobre a potência muscular, estresse e recuperação percebida, em jogadores de futsal [Effect of four successive days of games in muscle power, perceived stress and recovery in futsal players], Revista Brasileira de Educação Física E Esporte, 28, pp. 23-30, (2014); Galy O., Zongo P., Chamari K., Chaouachi A., Michalak E., Dellal A., Hue O., Relationships between agility, explosivity and anthropometric characteristics in melanesian futsal players, Biol Sport, 32, pp. 3-9, (2015); Glaister M., Howatson G., Pattison J.R., McInnes G., The reliability and validity of fatigue measures during multiple-sprint work: An issue revisited, Journal of Strength and Conditioning Research/National Strength & Conditioning Association, 22, 5, pp. 1597-1601, (2008); 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Rodrigues V.M., Ramos G.P., Mendes T.T., Cabido C.E.T., Melo E.S., Condessa L.A., Garcia E.S., Intensity of official futsal matches, Journal of Strength and Conditioning Research/National Strength & Conditioning Association, 25, 9, pp. 2482-2487, (2011); Rodriguez-Marroyo J.A., Villa G., Garcia-Lopez J., Foster C., Comparison of heart rate and session rating of perceived exertion methods of defining exercise load in cyclists, Journal of Strength and Conditioning Research/National Strength & Conditioning Association, 26, 8, pp. 2249-2257, (2012); Schulpis K.H., Parthimos T., Papakonstantinou E.D., Tsakiris T., Parthimos N., Mentis A.F.A., Tsakiris S., Evidence for the participation of the stimulated sympathetic nervous system in the regulation of carnitine blood levels of soccer players during a game, Metabolism: Clinical and Experimental, 58, 8, pp. 1080-1086, (2009); Wong D., Characteristics of world cup soccer players, Soccer Journal, 53, 1, pp. 57-62, (2008)","K. Charlot; Laboratory ACTES, (EA 3596), University of Guadeloupe, Pointe à Pitre, Guadeloupe, 97159, France; email: keynecharlot@gmail.com","","Routledge","02640414","","JSSCE","26067492","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-85027939053" "Ford P.; Hodges N.J.; Williams A.M.","Ford, Paul (8617201900); Hodges, Nicola J. (7004363572); Williams, A. Mark (35580552000)","8617201900; 7004363572; 35580552000","Examining action effects in the execution of a skilled soccer kick by using erroneous feedback","2007","Journal of Motor Behavior","39","6","","481","490","9","17","10.3200/JMBR.39.6.481-490","https://www.scopus.com/inward/record.uri?eid=2-s2.0-36348971615&doi=10.3200%2fJMBR.39.6.481-490&partnerID=40&md5=a6aa44b3b7414c6d865f427221b90b22","Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, United Kingdom; School of Human Kinetics, University of British Columbia, Vancouver, BC, Canada; Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Henry Cotton Campus, Liverpool, L3 2ET, Trueman Street, United Kingdom","Ford P., Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, United Kingdom, Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Henry Cotton Campus, Liverpool, L3 2ET, Trueman Street, United Kingdom; Hodges N.J., School of Human Kinetics, University of British Columbia, Vancouver, BC, Canada; Williams A.M., Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, United Kingdom","The authors examined the role of action effects (i.e., ball trajectory) during the performance of a soccer kick. Participants were 20 expert players who kicked a ball over a height barrier toward a ground-level target. The authors occluded participants' vision of the ball trajectory after foot-to-ball contact. Participants in a 1st group received erroneous feedback from a video that showed a ball-trajectory apex approximately 75 cm lower than that of their actual kick, although the ball's landing position was unaltered. Participants in a 2nd group received correct video feedback of both the ball trajectory and the landing position. The erroneous-feedback group showed a significant bias toward higher ball trajectories than did the correct-feedback group. The authors conclude that performers at high levels of skill use the visual consequences of the action to plan and execute an action. Copyright © 2007 Heldref Publications.","Expertise; Feedback; Soccer kick; Vision","Adaptation, Psychological; Adolescent; Adult; Association Learning; Athletic Performance; Biomechanics; Choice Behavior; Feedback, Psychological; Humans; Male; Motor Skills; Practice (Psychology); Reference Values; Soccer; Visual Perception; action effect; article; athlete; ball trajectory; controlled study; erroneous feedback; foot; human; human experiment; male; motor performance; normal human; parameter; soccer kick; sport; task performance; videorecording; vision; visual information","Adams J.A., A closed-loop theory of motor learning, Journal of Motor Behavior, 3, pp. 111-150, (1971); Bennett S., Davids K., The manipulation of vision during the power lift squat: Exploring the boundaries of the specificity of practice hypothesis, Research Quarterly for Exercise and Sport, 66, pp. 210-218, (1995); Bennett S.J., Button C., Kingsbury D., Davids K., Manipulating visual informational constraints during practice enhances the acquisition of catching skill in children, Research Quarterly for Exercise and Sport, 70, pp. 220-232, (1999); Buekers M.J., Magill R.A., The role of task experience and prior knowledge for detecting invalid augmented feedback while learning a motor skill, Quarterly Journal of Experimental Psychology, 48 A, pp. 84-97, (1995); Buekers M.J., Magill R.A., Hall K.G., The effect of erroneous knowledge of results on skill acquisition when augmented feedback is redundant, Quarterly Journal of Experimental Psychology, 44 A, pp. 105-117, (1992); Elsner B., Hommel B., Effect anticipation and action control, Journal of Experimental Psychology: Human Perception and Performance, 27, pp. 229-240, (2001); Ford P., Hodges N.J., Huys R., Williams A.M., The role of external action-effects in the execution of a soccer kick: A comparison across skill level, Motor Control, 10, pp. 386-404, (2006); Huys R., Beek P.J., The coupling point between point-of-gaze and ball movements in three-ball cascade juggling: The effects of expertise, pattern and tempo, Journal of Sport Sciences, 20, pp. 171-185, (2002); Keller P.E., Koch I., The planning and execution of short auditory sequences, Psychonomic Bulletin and Review, 13, pp. 711-716, (2006); Khan M.A., Elliott D., Coull J., Chua R., Lyons J., Optimal control strategies under different feedback schedules: Kinematic evidence, Journal of Motor Behavior, 34, pp. 45-57, (2002); Koch I., Keller P.E., Prinz W., The ideomotor approach to action control: Implications for skilled performance, International Journal of Sport & Exercise Psychology, 2, pp. 362-372, (2004); Kunde W., Response-effect compatibility in manual choice reaction tasks, Journal of Experimental Psychology: Human Perception and Performance, 27, pp. 387-394, (2001); Kunde W., Temporal response-effect compatibility, Psychological Research, 67, pp. 153-159, (2003); Kunde W., Hoffmann J., Zellmann P., The impact of anticipated action effects on action planning, Acta Psychologica, 109, pp. 137-155, (2002); Kunde W., Koch I., Hoffmann J., Anticipated action effects affect the selection, initiation and execution of actions, Quarterly Journal of Experimental Psychology, Section A: Human Experimental Psychology, 57 A, pp. 87-106, (2004); McNevin N., Magill R.A., Buekers M.J., The effects of erroneous knowledge of results on transfer of anticipation timing, Research Quarterly for Exercise and Sport, 65, pp. 324-329, (1994); Prinz W., Perception and action planning, European Journal of Cognitive Psychology, 9, pp. 129-154, (1997); Proteau L., On the specificity of learning and the role of visual information for movement control, Vision and motor control, pp. 67-103, (1992); Robertson S., Collins J., Elliott D., Starkes J., The influence of skill and intermittent vision on dynamic balance, Journal of Motor Behavior, 26, pp. 333-339, (1994); Robertson S., Elliott D., The influence of skill in gymnastics and vision on dynamic balance, International Journal of Sport Psychology, 27, pp. 361-368, (1996); Schmidt R.A., A schema theory of discrete motor skill learning, Psychological Review, 82, pp. 225-260, (1975); Schmidt R.A., Control processes in motor skills, Exercise and Sport Sciences Reviews, 4, pp. 229-261, (1976); Schmidt R.A., McCabe J.F., Motor program utilization over extended practice, Journal of Human Movement Studies, 2, pp. 239-247, (1976); Soucy M.C., Proteau L., Development of multiple movement representations with practice: Specificity versus flexibility, Journal of Motor Behavior, 33, pp. 243-254, (2001); Vanvenckenray J., Buekers M.J., Mendes R.S., Helsen W.F., Relearning movements: Modifications of an incorrectly timed reversal movement, Perceptual and Motor Skills, 89, pp. 195-203, (1999); Williams A.M., Weigelt C., Harris M., Scott M.A., Age-related differences in vision and proprioception in a lower limb interceptive task: The effects of skill level and practice, Research Quarterly for Exercise and Sport, 73, pp. 386-395, (2002); Zar J.H., Biostatistical analysis, (1996)","P. Ford; Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Henry Cotton Campus, Liverpool, L3 2ET, Trueman Street, United Kingdom; email: p.ford@ljmu.ac.uk","","","00222895","","JMTBA","18055354","English","J. Mot. Behav.","Article","Final","","Scopus","2-s2.0-36348971615" "Ibrahim R.; Kingma I.; de Boode V.A.; Faber G.S.; van Dieën J.H.","Ibrahim, Rony (57811031800); Kingma, Idsart (7006133287); de Boode, Vosse A (56578823200); Faber, Gert S. (14053768900); van Dieën, Jaap H. (7005065606)","57811031800; 7006133287; 56578823200; 14053768900; 7005065606","Kinematic and kinetic analysis of the goalkeeper’s diving save in football","2019","Journal of Sports Sciences","37","3","","313","321","8","17","10.1080/02640414.2018.1499413","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85050536907&doi=10.1080%2f02640414.2018.1499413&partnerID=40&md5=45345c164cb90c23518740bc20bb4287","Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Science, Amsterdam, Netherlands; Adidas miCoach Performance Centre, AFC Ajax, Amsterdam, Netherlands","Ibrahim R., Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Science, Amsterdam, Netherlands; Kingma I., Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Science, Amsterdam, Netherlands; de Boode V.A., Adidas miCoach Performance Centre, AFC Ajax, Amsterdam, Netherlands; Faber G.S., Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Science, Amsterdam, Netherlands; van Dieën J.H., Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Science, Amsterdam, Netherlands","Kinetics and full body kinematics were measured in ten elite goalkeepers diving to save high and low balls at both sides of the goal, aiming to investigate their starting position, linear and angular momentum, and legs' contribution to end-performance. Our results showed that goalkeepers adopted a starting position with a stance width of 33 ± 1% of leg length, knee flexion angle of 62 ± 18° and hip flexion angle of 63 ± 18°. The contralateral leg contributed more than the ipsilateral leg to COM velocity (p < 0.01), both for the horizontal (2.7 ± 0.1 m·s−1 versus 1.2 ± 0.1 m·s−1) and for the vertical component (3.1 ± 0.3 m·s−1 versus 0.4 ± 0.2 m·s−1). Peak horizontal and peak angular momenta were significantly larger (p < 0.01) for low dives than for high dives with a mean difference of 55 kg·m·s−1 and 9 kg·m2·s−1, respectively. In addition, peak vertical momentum was significantly larger (p < 0.01) for high dives with a mean difference between dive heights of 113 kg·m·s−1. Coaches need to highlight horizontal lateral skills and exercises (e.g. sideward push-off, sideward jumps), with emphasis on pushing-off with the contralateral leg, when training and assessing goalkeeper’s physical performance. © 2018, © 2018 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.","Biomechanics; dive save; jumping; push-off; reaction time; sports performance","Adolescent; Biomechanical Phenomena; Hip Joint; Humans; Kinetics; Knee Joint; Movement; Range of Motion, Articular; Soccer; Young Adult; article; athletic performance; biomechanics; controlled study; diving; football; height; hip; jumping; kinetics; knee function; leg length; physical performance; reaction time; skill; standing; adolescent; human; joint characteristics and functions; kinetics; knee; movement (physiology); soccer; young adult","Barlett R.M., Sports biomechanics: Reducing injury and improving performance, (1999); Faber G.S., Chang C., Kingma I., Dennerlein J., Lifting style and participant’s sex do not affect optimal inertial sensor location for ambulatory assessment of trunk inclination, Journal of Biomechanics, 46, pp. 1027-1030, (2013); Faber G.S., Kingma I., van Dieen J.H., Effect of initial horizontal object position on peak L5/S1 moments in manual lifting is dependent on task type and familiarity with alternative lifting strategies, Ergonomics, 54, pp. 72-81, (2011); Franks I.M., Hanvey T., Cues for goalkeepers. High-tech methods used to measure penalty shot response, Soccer Journal, 42, pp. 30-33, (1997); Ibrahim R., Faber G.S., Kingma I., van Dieen J.H., Kinematic analysis of the drag flick in field hockey, Sports Biomechanics, 16, 1, pp. 45-57, (2016); Kingma I., de Looze P.M., Toussaint M.H., Klijnsma G.H., Bruijnen B.M.T., Validation of a full body 3-D dynamic linked segment model, Human Movement Science, 15, pp. 833-860, (1996); Kuhn W., Penalty kick strategies for shooters and goalkeepers, Science and football, pp. 489-492, (1988); Meylan C., McMaster T., Cronin J., Mohammad N., Rogers C., deKlerk M., Single-leg lateral, horizontal, and vertical jump assessment: Reliability, interrelationships, and ability to predict sprint and change-of-direction performance, Journal of Strength and Conditioning Research, 23, 4, pp. 1140-1147, (2009); Poor H.V., An introduction to signal detection and estimation, pp. 173-185, (1988); Powers S.K., Howley E.T., Exercise physiology, theory and application to fitness and performance, (2007); Savelsbergh G.J.P., Williams A.M., Van der Kamp J., Ward P., Visual search, anticipation and expertise in soccer goalkeepers, Journal of Sports Sciences, 20, pp. 279-287, (2002); Savelsbergh G.J.P., Williams A.M., Van der Kamp J., Ward P., Anticipation and visual search behavior in expert soccer goalkeepers, Ergonomics, 48, (2005); Spratford W., Mellifont R., Burkett B., The influence of dive direction on the movement characteristics for elite football goalkeepers, Sports Biomechanics, 8, pp. 235-245, (2009); Staude G., Wolf W., Objective motor response onset detection in surface myoelectric signals, Medical Engineering & Physics, 21, pp. 449-467, (1999); Suzuki S., Togari H., Isokawa M., Ohashi J., Ohgushi T., Analysis of the goalkeeper’s diving motion, Proceedings of the First World Congress of Science and Football, pp. 468-475, (1987); Williams A.M., Perceptual skill in soccer: Implications for talent identification and development, Journal of Sports Sciences, 18, pp. 1-14, (2000); Williams A.M., Davids K., Williams J.G., Visual perception and action in sport, (1999); Wu G., Siegler S., Allard P., Kirtley C., Leardini A., Rosenbaum D., Stokes I., ISB recommendation on definitions of joint coordinate system of various joints for the reporting of human joint motion, Part I: Ankle, hip and spine, Journal of Biomechanics, 35, pp. 543-548, (2002); Yeadon M.R., The simulation of aerial movement–III. The determination of the angular momentum of human body, Journal of Biomechanics, 23, 1, pp. 75-83, (1990); Yu B., Gabriel D., Noble L., An K., Estimate of the optimum cutoff frequency for the butterworth low-pass digital filter, Journal of Applied Biomechanics, 15, pp. 318-329, (1999)","I. Kingma; Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Science, Amsterdam, Netherlands; email: i.kingma@vu.nl","","Routledge","02640414","","JSSCE","30036138","English","J. Sports Sci.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-85050536907" "Nouni-Garcia R.; Carratala-Munuera C.; Orozco-Beltran D.; Lopez-Pineda A.; Asensio-Garcia M.R.; Gil-Guillen V.F.","Nouni-Garcia, Rauf (57195331875); Carratala-Munuera, Concepcion (13408606300); Orozco-Beltran, Domingo (57194561233); Lopez-Pineda, Adriana (57206683392); Asensio-Garcia, María Rosario (56960612300); Gil-Guillen, Vicente F. (6602729443)","57195331875; 13408606300; 57194561233; 57206683392; 56960612300; 6602729443","Clinical benefit of the FIFA 11 programme for the prevention of hamstring and lateral ankle ligament injuries among amateur soccer players","2018","Injury Prevention","24","2","","149","154","5","20","10.1136/injuryprev-2016-042267","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85027228988&doi=10.1136%2finjuryprev-2016-042267&partnerID=40&md5=149d8214eb6a1aa91b7b4817b4864cb9","Catedra de Medicina de Familia, Department of Clinical Medicine, Miguel Hernandez University, Carretera Nacional N332 s/n, San Juan de Alicante, Alicante, 03550, Spain; Department of Pathology and Surgery, Miguel Hernandez University, San Juan de Alicante, Spain","Nouni-Garcia R., Catedra de Medicina de Familia, Department of Clinical Medicine, Miguel Hernandez University, Carretera Nacional N332 s/n, San Juan de Alicante, Alicante, 03550, Spain; Carratala-Munuera C., Catedra de Medicina de Familia, Department of Clinical Medicine, Miguel Hernandez University, Carretera Nacional N332 s/n, San Juan de Alicante, Alicante, 03550, Spain; Orozco-Beltran D., Catedra de Medicina de Familia, Department of Clinical Medicine, Miguel Hernandez University, Carretera Nacional N332 s/n, San Juan de Alicante, Alicante, 03550, Spain; Lopez-Pineda A., Catedra de Medicina de Familia, Department of Clinical Medicine, Miguel Hernandez University, Carretera Nacional N332 s/n, San Juan de Alicante, Alicante, 03550, Spain; Asensio-Garcia M.R., Department of Pathology and Surgery, Miguel Hernandez University, San Juan de Alicante, Spain; Gil-Guillen V.F., Catedra de Medicina de Familia, Department of Clinical Medicine, Miguel Hernandez University, Carretera Nacional N332 s/n, San Juan de Alicante, Alicante, 03550, Spain","Objective To analyse the relationship between the implementation of the 11' protocol during the regular season in a men's amateur soccer team and the rate of hamstring and lateral ankle ligament (LAL) injuries, and to estimate the clinical benefit of the programme according to the type of injury and the position field. Methods This cohort study was conducted in two different men's amateur soccer teams. During two seasons, the exposed group (43 players) performed the 11' protocol twice a week, and the unexposed group (43 players) performed the regular training programme. All players trained three times per week for 1.5 hours per day. Data collection was performed for every 1000 hours of play. Results 18 hamstring injuries (injury rate (IR) of 2.26 injuries/1000 training+competition hours) and 15 LAL injuries (IR of 1.88 injuries/1000) were registered in the exposed group. In the unexposed group, there were 25 LAL injuries (IR of 3.14 injuries/1000) and 35 hamstring injuries (IR of 4.39 injuries/1000). The number needed to treat to prevent one new case was 3.9 in LAL injuries, 3.31 in biceps femoris injuries and 10.7 in recurrent hamstring injuries. Conclusions The 11' programme reduced the incidence of hamstring and LAL injuries in amateur players. According to the field position, the programme was effective for defenders and midfielders. In accordance with the type of injury, the exposed group had a lower risk of LAL, biceps femoris and hamstring injuries compared with those in the unexposed group. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2018.","athletic Injuries; football; lower extremity; primary prevention; soccer; sports medicine","Adult; Anterior Cruciate Ligament Injuries; Athletic Injuries; Biomechanical Phenomena; Hamstring Muscles; Humans; Incidence; Male; Primary Prevention; Program Evaluation; Retrospective Studies; Soccer; Spain; Warm-Up Exercise; Young Adult; adult; anterior cruciate ligament injury; biomechanics; epidemiology; hamstring muscle; human; incidence; injuries; male; pathophysiology; physiology; primary prevention; program evaluation; retrospective study; soccer; Spain; sport injury; warm up; young adult","Andersen T.E., Larsen O., Tenga A., Et al., Football incident analysis: A new video based method to describe injury mechanisms in professional football, Br J Sports Med, 37, pp. 226-232, (2003); Martinez L.C., Casais Martinez L., Revisión de las estrategias para la prevención de lesiones en el deporte desde la actividad física, Apunts. Medicina de l'Esport, 43, pp. 30-40, (2008); Maffulli N., Oliva F., Frizziero A., Et al., ISMuLT guidelines for muscle injuries, Muscles Ligaments Tendons J, 3, pp. 241-249, (2013); Guillodo Y., Here-Dorignac C., Thoribe B., Et al., Clinical predictors of time to return to competition following hamstring injuries, Muscles Ligaments Tendons J, 4, pp. 386-390, (2014); Inklaar H., Soccer injuries. II: Aetiology and prevention, Sports Med, 18, pp. 81-93, (1994); Woods C., Hawkins R., Hulse M., Et al., The Football Association Medical Research Programme: An audit of injuries in professional football-analysis of preseason injuries, Br J Sports Med, 36, pp. 436-441, (2002); Muller-Rath R., Schmidt C., Mumme T., Et al., The injury pattern following the introduction of the junior premier league in Germany compared to professional senior football (soccer), Sportverletz Sportschaden, 20, pp. 192-195, (2006); Askling C., Karlsson J., Thorstensson A., Hamstring injury occurrence in elite soccer players after preseason strength training with eccentric overload, Scand J Med Sci Sports, 13, pp. 244-250, (2003); Romero Rodriguez D., Tous Fajardo J., Prevención de Lesiones en El Deporte. Claves para un Rendimiento Ptimo, (2010); Pangrazio O., Forriol F., Epidemiology of soccer players traumatic injuries during the 2015 America Cup, Muscles Ligaments Tendons J, 6, pp. 124-130, (2016); Lephart S.M., Pincivero D.M., Giraldo J.L., Et al., The role of proprioception in the management and rehabilitation of sport injuries, Am J Sports Med, 25, pp. 130-137, (1997); Lorza G., La reeducación propioceptiva en la prevención y tratamiento de las lesiones en el baloncesto, AMD, 15, pp. 517-521, (1998); Thacker S.B., Stroup D.F., Branche C.M., Et al., Prevention of knee injuries in sports. A systematic review of the literature, J Sports Med Phys Fitness, 43, pp. 165-179, (2003); Zurich: Federación Internacional de Fútbol Asociación, (2006); Junge A., Lamprecht M., Stamm H., Et al., Countrywide campaign to prevent soccer injuries in Swiss amateur players, Am J Sports Med, 39, pp. 57-63, (2011); Rodas G., Pruna R., Til L.L., Et al., Guía de práctica clínica de las lesiones musculares. Epidemiología, diagnóstico, tratamiento y prevención, Apunts Med Esport, 169, pp. 179-203, (2009); The Prevention Programme. English Version; Peterson L., Junge A., Chomiak J., Et al., Incidence of football injuries and complaints in different age groups and skill-level groups, Am J Sports Med, 28, pp. 51-57, (2000); Phillips L.H., Hodgson L., Sports injury incidence, Br J Sports Med, 34, pp. 133-136, (2000); Orchard J., Seward H., Epidemiology of injuries in the Australian Football League, seasons 1997-2000, Br J Sports Med, 36, pp. 39-44, (2002); Soligard T., Myklebust G., Steffen K., Et al., Comprehensive warm-up programme to prevent injuries in young female footballers: Cluster randomised controlled trial, BMJ, 337, (2008); Silvers-Granelli H., Mandelbaum B., Adeniji O., Et al., Efficacy of the FIFA 11+ injury prevention program in the collegiate male soccer player, Am J Sports Med, 43, pp. 2628-2637, (2015); Stiell I.G., Greenberg G.H., McKnight R.D., Et al., Decision rules for the use of radiography in acute ankle injuries. Refinement and prospective validation, JAMA, 269, pp. 1127-1132, (1993); Dauty M., Menu P., Fouasson-Chailloux A., Et al., Prediction of hamstring injury in professional soccer players by isokinetic measurements, Muscles Ligaments Tendons J, 6, pp. 116-123, (2016)","R. Nouni-Garcia; Catedra de Medicina de Familia, Department of Clinical Medicine, Miguel Hernandez University, San Juan de Alicante, Alicante, Carretera Nacional N332 s/n, 03550, Spain; email: ramay24@hotmail.com","","BMJ Publishing Group","13538047","","","28642247","English","Injury Prev.","Article","Final","","Scopus","2-s2.0-85027228988" "Cristi-Sánchez I.; Danes-Daetz C.; Neira A.; Ferrada W.; Yáñez Díaz R.; Silvestre Aguirre R.","Cristi-Sánchez, Iver (57204647186); Danes-Daetz, Claudia (57204790155); Neira, Alejandro (56559892500); Ferrada, Wilson (57205353984); Yáñez Díaz, Roberto (57205354023); Silvestre Aguirre, Rony (57205349178)","57204647186; 57204790155; 56559892500; 57205353984; 57205354023; 57205349178","Patellar and Achilles Tendon Stiffness in Elite Soccer Players Assessed Using Myotonometric Measurements","2019","Sports Health","11","2","","157","162","5","20","10.1177/1941738118820517","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85059670536&doi=10.1177%2f1941738118820517&partnerID=40&md5=82c07c588740b49875d83da8cfa28225","Escuela de Kinesiología, Facultad de Ciencias, Universidad Mayor, Santiago, Chile; Laboratorio Integrativo de Biomecánica y Fisiología del Esfuerzo, Escuela de Kinesiología, Facultad de Medicina, Universidad de los Andes, Santiago, Chile; Clínica MEDS, Santiago, Chile","Cristi-Sánchez I., Escuela de Kinesiología, Facultad de Ciencias, Universidad Mayor, Santiago, Chile; Danes-Daetz C., Laboratorio Integrativo de Biomecánica y Fisiología del Esfuerzo, Escuela de Kinesiología, Facultad de Medicina, Universidad de los Andes, Santiago, Chile; Neira A., Escuela de Kinesiología, Facultad de Ciencias, Universidad Mayor, Santiago, Chile; Ferrada W., Clínica MEDS, Santiago, Chile; Yáñez Díaz R., Clínica MEDS, Santiago, Chile; Silvestre Aguirre R., Clínica MEDS, Santiago, Chile","Background: Tendon overuse injuries are an issue in elite footballers (soccer players) and may affect tendon function. Achilles and patellar tendinopathy are the most frequent pathologies. Tendon stiffness, the relationship between the force applied to a tendon and the displacement exerted, may help represent tendon function. Stiffness is affected by training and pathology. Nevertheless, information regarding this mechanical property is lacking for elite soccer athletes. Hypothesis: Achilles and patellar tendon stiffness assessed using myotonometric measurements will be greater in elite soccer athletes than in control participants. Study Design: Cross-sectional study. Level of Evidence: Level 4. Methods: Forty-nine elite soccer athletes and 49 control participants were evaluated during the 2017 preseason. A handheld device was used to measure Achilles and patellar tendon stiffness. Dominant and nondominant limbs were assessed for both groups. Results: A significantly stiffer patellar tendon was found for both the dominant and the nondominant limb in the elite soccer athletes compared with the control group. Nevertheless, no differences were found in Achilles tendon stiffness between groups. When comparing between playing positions in soccer athletes, no significant differences were found for both tendons. Conclusion: Greater patellar tendon stiffness may be related to an improvement in force transmission during muscle contraction. On the other hand, it seems that after years of professional training, Achilles tendon stiffness does not change, conserving the storing-releasing function of elastic energy. The nonsignificant differences between positions may be attributable to the years of homogeneous training that the players underwent. Clinical Relevance: The present study shows another technique for measuring mechanical properties of tendons in soccer athletes that could be used in clinical settings. In the future, this technique may help clinicians choose the best exercise protocol to address impairments in tendon stiffness. © 2019 The Author(s).","Achilles tendon; elite soccer athletes; myotonometric measurements; patellar tendon; soccer; tendon stiffness","Achilles Tendon; Adult; Biomechanical Phenomena; Biometry; Cross-Sectional Studies; Cumulative Trauma Disorders; Humans; Muscle Contraction; Patellar Ligament; Soccer; Tendinopathy; Young Adult; achilles tendon; adult; article; clinical article; clinician; controlled study; cross-sectional study; exercise; female; human; human experiment; limb; male; muscle contraction; muscle training; patellar ligament; rigidity; soccer player; achilles tendon; biomechanics; biometry; cumulative trauma disorder; injuries; patellar ligament; pathophysiology; physiology; procedures; soccer; tendinitis; young adult","Aoki H., O'Hata N., Kohno T., Morikawa T., Seki J., A 15-year prospective epidemiological account of acute traumatic injuries during official professional soccer league matches in Japan, Am J Sports Med, 40, pp. 1006-1014, (2012); Arya S., Kulig K., Tendinopathy alters mechanical and material properties of the Achilles tendon, J Appl Physiol (1985), 108, pp. 670-675, (2010); Bohm S., Mersmann F., Arampatzis A., Human tendon adaptation in response to mechanical loading: a systematic review and meta-analysis of exercise intervention studies on healthy adults, Sports Med Open, 1, (2015); Brophy R., Silvers H.J., Gonzales T., Mandelbaum B.R., Gender influences: the role of leg dominance in ACL injury among soccer players, Br J Sports Med, 44, pp. 694-697, (2010); Cook J., Khan K., Harcourt P., Grant M., Young D., Bonar S., A cross sectional study of 100 athletes with jumper’s knee managed conservatively and surgically. 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Ditroilo M., Cully L., Boreham C.A., De Vito G., Assessment of musculo-articular and muscle stiffness in young and older men, Muscle Nerve, 46, pp. 559-565, (2012); Ditroilo M., Watsford M., Murphy A., De Vito G., Assessing musculo-articular stiffness using free oscillations: theory, measurement and analysis, Sports Med, 41, pp. 1019-1032, (2011); Faude O., Junge A., Kindermann W., Dvorak J., Injuries in female soccer players: a prospective study in the German national league, Am J Sports Med, 33, pp. 1694-1700, (2005); Fletcher J.R., Esau S.P., MacIntosh B.R., Changes in tendon stiffness and running economy in highly trained distance runners, Eur J Appl Physiol, 110, pp. 1037-1046, (2010); Foure A., Nordez A., McNair P., Cornu C., Effects of plyometric training on both active and passive parts of the plantarflexors series elastic component stiffness of muscle-tendon complex, Eur J Appl Physiol, 111, pp. 539-548, (2011); Fukunaga T., Kawakami Y., Kubo K., Kanehisa H., Muscle and tendon interaction during human movements, Exerc Sport Sci Rev, 30, pp. 106-110, (2002); Gajhede-Knudsen M., Ekstrand J., Magnusson H., Maffulli N., Recurrence of Achilles tendon injuries in elite male football players is more common after early return to play: an 11-year follow-up of the UEFA Champions League injury study, Br J Sports Med, 47, pp. 763-768, (2013); Gapeyeva H., Vain A., Methodical Guide: Principles of Applying Myoton in Physical Medicine and Rehabilitation, (2008); Gervasi M., Sisti D., Amatori S., Et al., Muscular viscoelastic characteristics of athletes participating in the European Master Indoor Athletics Championship, Eur J Appl Physiol, 117, pp. 1739-1746, (2017); Heinemeier K., Kjaer M., In vivo investigation of tendon responses to mechanical loading, J Musculoskelet Neuronal Interact, 11, pp. 115-123, (2011); Ishikawa M., Komi P.V., Grey M.J., Lepola V., Bruggemann G.P., Muscle-tendon interaction and elastic energy usage in human walking, J Appl Physiol (1985), 99, pp. 603-608, (2005); Jarvinen T.A., Kannus P., Maffulli N., Khan K.M., Achilles tendon disorders: etiology and epidemiology, Foot Ankle Clin, 10, pp. 255-266, (2005); Junge A., Dvorak J., Injury surveillance in the world football tournaments 1998-2012, Br J Sports Med, 47, pp. 782-788, (2013); Kawakami Y., Muraoka T., Ito S., Kanehisa H., Fukunaga T., In vivo muscle fibre behaviour during counter-movement exercise in humans reveals a significant role for tendon elasticity, J Physiol, 540, pp. 635-646, (2002); Kongsgaard M., Nielsen C., Hegnsvad S., Aagaard P., Magnusson S., Mechanical properties of the human Achilles tendon, in vivo, Clin Biomech (Bristol, Avon), 26, pp. 772-777, (2011); Kubo K., Kanehisa H., Ito M., Fukunaga T., Effects of isometric training on the elasticity of human tendon structures in vivo, J Appl Physiol (1985), 91, pp. 26-32, (2001); Kubo K., Miyazaki D., Shimoju S., Tsunoda N., Relationship between elastic properties of tendon structures and performance in long distance runners, Eur J Appl Physiol, 115, pp. 1725-1733, (2015); Kubo K., Tabata T., Ikebukuro T., Igarashi K., Yata H., Tsunoda N., Effects of mechanical properties of muscle and tendon on performance in long distance runners, Eur J Appl Physiol, 110, pp. 507-514, (2010); Li X., Shin H., Li S., Zhou P., Assessing muscle spasticity with myotonometric and passive stretch measurements: validity of the myotonometer, Sci Rep, 7, (2017); Lian O.B., Engebretsen L., Bahr R., Prevalence of jumper’s knee among elite athletes from different sports: a cross-sectional study, Am J Sports Med, 33, pp. 561-567, (2005); Lichtwark G.A., Bougoulias K., Wilson A., Muscle fascicle and series elastic element length changes along the length of the human gastrocnemius during walking and running, J Biomech, 40, pp. 157-164, (2007); Lichtwark G.A., Wilson A., Optimal muscle fascicle length and tendon stiffness for maximising gastrocnemius efficiency during human walking and running, J Theor Biol, 252, pp. 662-673, (2008); Lichtwark G.A., Wilson A.M., Interactions between the human gastrocnemius muscle and the Achilles tendon during incline, level and decline locomotion, J Exp Biol, 209, pp. 4379-4388, (2006); Magnusson S.P., Narici M.V., Maganaris C.N., Kjaer M., Human tendon behaviour and adaptation, in vivo, J Physiol, 586, pp. 71-81, (2008); Malliaras P., Kamal B., Nowell A., Et al., Patellar tendon adaptation in relation to load-intensity and contraction type, J Biomech, 46, pp. 1893-1899, (2013); Park S.K., Yang D.J., Kim J.H., Heo J.W., Uhm Y.H., Yoon J.H., Analysis of mechanical properties of cervical muscles in patients with cervicogenic headache, J Phys Ther Sci, 29, pp. 332-335, (2017); Pfirrmann D., Herbst M., Ingelfinger P., Simon P., Tug S., Analysis of injury incidences in male professional adult and elite youth soccer players: a systematic review, J Athl Train, 51, pp. 410-424, (2016); Portney L.G., Watkins M.P., Foundations of Clinical Research: Applications to Practice, (2009); Pozarowszczyk B., Pawlaczyk W., Smoter M., Et al., Effects of karate fights on Achilles tendon stiffness measured by myotonometry, J Hum Kinet, 56, pp. 93-97, (2017); Rio E., Kidgell D., Moseley G.L., Et al., Tendon neuroplastic training: changing the way we think about tendon rehabilitation: a narrative review, Br J Sports Med, 50, pp. 209-215, (2016); Rogers S.A., Relationships Between Multiple Mechanical Stiffness Assessments and Performance in Middle-Distance Runners, (2015); Seynnes O.R., Bojsen-Moller J., Albracht K., Et al., Ultrasound-based testing of tendon mechanical properties: a critical evaluation, J Appl Physiol (1985), 118, pp. 133-141, (2015); Wiesinger H.-P., Kosters A., Muller E., Seynnes O.R., Effects of increased loading on in vivo tendon properties: a systematic review, Med Sci Sports Exerc, 47, pp. 1885-1895, (2015)","I. Cristi-Sánchez; Escuela de Kinesiología, Facultad de Ciencias, Universidad Mayor, Santiago, Chile; email: iver.cristi@mayor.cl","","SAGE Publications Inc.","19417381","","","30601077","English","Sports Health","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-85059670536" "Weidauer L.A.; Eilers M.M.; Binkley T.L.; Vukovich M.D.; Specker B.L.","Weidauer, L.A. (55260187800); Eilers, M.M. (55260341900); Binkley, T.L. (6603050137); Vukovich, M.D. (7003263863); Specker, B.L. (7006319685)","55260187800; 55260341900; 6603050137; 7003263863; 7006319685","Effect of different collegiate sports on cortical bone in the tibia","2012","Journal of Musculoskeletal Neuronal Interactions","12","2","","68","73","5","24","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84862742946&partnerID=40&md5=6f3d134441d3cda38d6a6f786b57eae3","EA Martin Program in Human Nutrition, South Dakota State University, Brookings, SD, United States","Weidauer L.A., EA Martin Program in Human Nutrition, South Dakota State University, Brookings, SD, United States; Eilers M.M., EA Martin Program in Human Nutrition, South Dakota State University, Brookings, SD, United States; Binkley T.L., EA Martin Program in Human Nutrition, South Dakota State University, Brookings, SD, United States; Vukovich M.D., EA Martin Program in Human Nutrition, South Dakota State University, Brookings, SD, United States; Specker B.L., EA Martin Program in Human Nutrition, South Dakota State University, Brookings, SD, United States","Objectives: The purpose of this study was to determine the effect of sports participation on cortical bone in the tibia. Methods: 53 female collegiate athletes (25 cross-country, 16 soccer, and 12 volleyball) and 20 inactive controls had the left distal 20% tibia scanned by pQCT. Cortical volumetric BMD (vBMD) was measured within the cortical shell at the anterior, posterior, medial, and lateral regions and standard deviations were calculated. Results: Total vBMD was greater in the control group (1161±5 mg/mm3) than each of the sports (p<0.05). Soccer players (1147±5 mg/mm3) had greater vBMD than volleyball players (1136±7 mg/mm3) (p<0.05), but similar to cross-country runners (1145±5 mg/mm3). Cortical thickness was greatest in soccer players (4.1±0.1 mm), while cross-country and control subjects (3.8±0.1 mm) had greater thickness than volleyball players (3.4±0.1 mm)(p<0.05). Periosteal circumference was greater in volleyball players (71±1.4 mm) than soccer, cross-country, and control subjects (68±0.9, 69±0.8, and 66±1 mm, respectively; all, p<0.05). vBMD variation within the cortical shell was greater among control subjects (70±6 mg/cm3) than each of the athlete groups, with soccer players having lower variation than cross country runners (within-in person SD 36±6 mg/cm3 and 54±5 mg/cm3 respectively; p<0.05). Conclusion: These results indicate bone geometry and distribution within the cortical shell of the tibia varies depending upon sporting activities of young women.","Athletes; Bone; Female; pQCT; Stress-fracture","Adolescent; Athletic Performance; Biomechanics; Bone Density; Bone Development; Female; Humans; Physical Education and Training; Physical Fitness; Tibia; Tomography, X-Ray Computed; Young Adult; article; athlete; athletic performance; bone density; bone mass; bone strength; computer assisted tomography; controlled study; cortical bone; female; human; human experiment; jumping; normal human; periosteum; sports medicine; stress strain relationship; tibia; volleyball; volumetry","Wolff J., Das Gestetz Der Transformation Der Knocken, (1892); Frost H.M., Bone ""mass"" and the ""mechanostat"": A proposal, Anat Rec, 219, pp. 1-9, (1987); Frost H.M., The mechanostat: A proposed pathogenic mechanism of osteoporoses and the bone mass effects of mechanical and nonmechanical agents, Bone Miner, 2, pp. 73-85, (1987); Frost H.M., Perspectives: A proposed general model of the ""mechanostat"" (suggestions from a new skeletal-biologic paradigm), Anat Rec, 244, pp. 139-147, (1996); Frost H.M., Bone's mechanostat: A 2003 update, Anat Rec a Discov Mol Cell Evol Biol, 275, pp. 1081-1101, (2003); Heinonen A., Oja P., Kannus P., Et al., Bone mineral density in female athletes representing sports with different loading characteristics of the skeleton, Bone, 17, pp. 197-203, (1995); Heinonen A., Oja P., Kannus P., Sievanen H., Manttari A., Vuori I., Bone mineral density of female athletes in different sports, Bone Miner, 23, pp. 1-14, (1993); Taaffe D.R., Robinson T.L., Snow C.M., Marcus R., High-impact exercise promotes bone gain in well-trained female athletes, J Bone Miner Res, 12, pp. 255-260, (1997); Nikander R., Sievanen H., Heinonen A., Kannus P., Femoral neck structure in adult female athletes subjected to different loading modalities, J Bone Miner Res, 20, pp. 520-528, (2005); Nikander R., Sievanen H., Heinonen A., Karstila T., Kannus P., Load-specific differences in the structure of femoral neck and tibia between world-class moguls skiers and slalom skiers, Scand J Med Sci Sports, 18, pp. 145-153, (2008); Liu L., Maruno R., Mashimo T., Et al., Effects of physical training on cortical bone at midtibia assessed by peripheral QCT, J Appl Physiol, 95, pp. 219-224, (2003); Haapasalo H., Kontulainen S., Sievanen H., Kannus P., Jarvinen M., Vuori I., Exercise-induced bone gain is due to enlargement in bone size without a change in volumetric bone density: A peripheral quantitative computed tomography study of the upper arms of male tennis players, Bone, 27, pp. 351-357, (2000); Kontulainen S., Sievanen H., Kannus P., Pasanen M., Vuori I., Effect of long-term impact-loading on mass, size, and estimated strength of humerus and radius of female racquet-sports players: A peripheral quantitative computed tomography study between young and old starters and controls, J Bone Miner Res, 18, pp. 352-359, (2003); Augat P., Reeb H., Claes L.E., Prediction of fracture load at different skeletal sites by geometric properties of the cortical shell, J Bone Miner Res, 11, pp. 1356-1363, (1996); Lai Y.M., Qin L., Hung V.W., Chan K.M., Regional differences in cortical bone mineral density in the weight-bearing long bone shaft - a pQCT study, Bone, 36, pp. 465-471, (2005); Crossley K., Bennell K.L., Wrigley T., Oakes B.W., Ground reaction forces, bone characteristics, and tibial stress fracture in male runners, Med Sci Sports Exerc, 31, pp. 1088-1093, (1999); Popp K.L., Hughes J.M., Smock A.J., Et al., Bone geometry, strength, and muscle size in runners with a history of stress fracture, Med Sci Sports Exerc, 41, pp. 2145-2150, (2009); Nikander R., Sievanen H., Uusi-Rasi K., Heinonen A., Kan-Nus P., Loading modalities and bone structures at non weight-bearing upper extremity and weight-bearing lower extremity: A pQCT study of adult female athletes, Bone, 39, pp. 886-894, (2006); Andreoli A., Monteleone M., van Loan M., Promenzio L., Tarantino U., de Lorenzo A., Effects of different sports on bone density and muscle mass in highly trained athletes, Med Sci Sports Exerc, 33, pp. 507-511, (2001); Fehling P.C., Alekel L., Clasey J., Rector A., Stillman R.J., A comparison of bone mineral densities among female athletes in impact loading and active loading sports, Bone, 17, pp. 205-210, (1995); Taaffe D.R., Snow-Harter C., Connolly D.A., Robinson T.L., Brown M.D., Marcus R., Differential effects of swimming versus weight-bearing activity on bone mineral status of eumenorrheic athletes, J Bone Miner Res, 10, pp. 586-593, (1995); Schoenau E., Neu C.M., Rauch F., Manz F., Gender-specific pubertal changes in volumetric cortical bone mineral density at the proximal radius, Bone, 31, pp. 110-113, (2002); Lai Y.M., Qin L., Hung V.W.Y., Chan K.M., Regional differences in cortical bone mineral density in the weight-bearing long bone shaft - A pQCT study, Bone, 36, pp. 465-471, (2005); Cooper D.M., Ahamed Y., Macdonald H.M., McKay H.A., Characterising cortical density in the mid-tibia: Intra-individual variation in adolescent girls and boys, Br J Sports Med, 42, pp. 690-695, (2008); Patel D.R., Stress fractures: Diagnosis and management in the primary care setting, Pediatric Clinics of North America, 57, pp. 819-827, (2010); Sonoda N., Chosa E., Totoribe K., Tajima N., Biomechanical analysis for stress fractures of the anterior middle third of the tibia in athletes: Nonlinear analysis using a three dimensional finite element method, J Orthop Sci, 8, pp. 505-513, (2003)","L. A. Weidauer; South Dakota State University, Brookings, SD 57007, SWC Box 506, United States; email: Lee.Weidauer@sdstate.edu","","","11087161","","JMNIB","22647279","English","J. Musculoskelet. Neuronal Interact.","Article","Final","","Scopus","2-s2.0-84862742946" "DiFiori J.P.","DiFiori, John P. (6701738194)","6701738194","Stress fracture of the proximal fibula in a young soccer player: A case report and a review of the literature","1999","Medicine and Science in Sports and Exercise","31","7","","925","928","3","23","10.1097/00005768-199907000-00002","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0033018749&doi=10.1097%2f00005768-199907000-00002&partnerID=40&md5=4409bcf39cae25713b9b0dca5008cb98","Department of Family Medicine, Division of Sports Medicine, University of California, Los Angeles, CA, United States; UCLA Department of Family Medicine, Los Angeles, CA 90095, 200 UCLA Medical Plaza Building, United States","DiFiori J.P., Department of Family Medicine, Division of Sports Medicine, University of California, Los Angeles, CA, United States, UCLA Department of Family Medicine, Los Angeles, CA 90095, 200 UCLA Medical Plaza Building, United States","A 14-yr-old soccer player complained of a history of leg pain with activity that had been present for several weeks. There was no history of direct trauma. Tenderness was found over the lateral aspect of the leg, and radiographs showed an area of calcification along the shaft of the proximal fibula. Because of the unusual location of the findings and to exclude a tumor, magnetic resonance imaging (MRI) was obtained which confirmed the diagnosis of a proximal fibular stress fracture. The patient returned to full sport participation with a period of relative rest, splinting, and strengthening and flexibility training. This case describes an injury that has not been reported in young athletes and only rarely described in active adults. The literature regarding this injury is reviewed, and two injury patterns of proximal fibular stress fractures are described.","Fibular Biomechanics; MRI; Overuse Injury","Adolescent; Fibula; Fractures, Stress; Humans; Magnetic Resonance Imaging; Male; Soccer; Splints; adolescent; article; biomechanics; bone radiography; calcification; case report; exercise; fibula; human; leg pain; male; nuclear magnetic resonance imaging; repetitive strain injury; rest; splinting; sport; stress fracture","Baxter-Jones A., Maffulli N., Helms P., Low injury rates in elite athletes, Arch. Dis. Child., 68, pp. 130-132, (1993); Bennell K.L., Bruckner P.D., Epidemiology and site specificity of stress fractures, Clin. Sports Med., 16, pp. 179-196, (1997); Blair W.F., Hanley S.R., Stress fracture of the proximal fibula, Am. J. Sports Med., 8, pp. 212-213, (1980); Burrows H.J., Fatigue fractures of the fibula, J. Bone Joint Surg., 308, pp. 266-279, (1948); Cavanagh P.R., Pollock M.L., Landa J., A biomechanical comparison of elite and good distance runners, Ann. N. Y. Acad. Sci., 301, pp. 328-345, (1977); Dalton S.E., Overuse injuries in adolescent athletes, Sports Med., 13, pp. 58-70, (1992); Devas M.B., Sweetnam R., Stress fractures of the fibula, J. Bone Joint Surg., 38 B, pp. 818-829, (1956); Devas M.B., Stress fractures in children, J. Bone Joint Surg., 45 B, pp. 528-541, (1963); Gardner L., Dziados J.E., Jones B.H., Et al., Prevention of lower extremity stress fractures: A controlled trial of a shock absorbent insole, Am. J. Publ. Health, 78, pp. 1563-1567, (1988); Goh J.C.H., Lee E.H., Ang E.J., Bayon P., Pho R.W.H., Biomechanical study on the load-bearing characteristics of the fibula and the effects of fibular resection, Clin. Orthop., 279, pp. 223-228, (1992); Hulkko A., Orava S., Stress fractures in athletes, Int. J. Sports Med., 8, pp. 221-226, (1987); King W.D., Wiss D.A., Ting A., Isolated fibular shaft fracture in a sprinter, Am. J. Sports Med., 18, pp. 209-210, (1990); Lacroix H., Keeman J.N., An unusual stress fracture of the fibula in a long-distance runner, Arch. Orthop. Trauma Surg., 111, pp. 289-290, (1992); Lambert K.L., The weight-bearing function of the fibula: A strain gauge study, J. Bone Joint Surg., 53 A, pp. 507-513, (1971); Milgrom C., Finestone A., Shlamkovitch N., Et al., Youth is a risk factor for stress fracture, J. Bone Joint Surg. (Br.), 76 B, pp. 20-22, (1994); Newberg A.H., Kalisher L., Case report: An unusual stress fracture in a jogger, J. Trauma, 18, pp. 816-817, (1978); Ogden J.A., The anatomy and function of the proximal tibiofibular joint, Clin. Orthop., 101, pp. 186-191, (1974); Orava S., Puranen J., Exertion injuries in adolescent athletes, Br. J. Sports Med., 12, pp. 4-10, (1978); Ounpuu S., The biomechanics of walking and running, Clin. Sports Med., 13, pp. 843-863, (1994); Reich I., Merkel G., Gebert L., Isolierter proximaler Wadenbeinbruch beim Marfan-Syndrom, Chirurg., 64, pp. 975-977, (1993); Schmidt Brudvig T.J., Gudger T.D., Obermeyer L.O., Stress fractures in 295 trainees: A one-year study of incidence as related to age, sex, and race, Milit. Med., 148, pp. 666-667, (1983); Scranton P.E., McMaster J.H., Kelly E., Dynamic fibular function, Clin. Orthop., 118, pp. 76-81, (1976); Strudwick W.J., Goodman S.B., Proximal fibular stress fracture in an aerobic dancer, Am. J. Sports Med., 20, pp. 481-482, (1992); Sullivan D., Warren R.F., Pavlov H., Kelman G., Stress fractures in 51 runners, Clin. Orthop., 187, pp. 188-192, (1984); Symeonides P.P., High stress fractures of the fibula, J. Bone Joint Surg., 62 B, pp. 192-193, (1980); Takebe K., Nakagawa A., Minami H., Kanazawa H., Hirohata K., Role of the fibula in weight-bearing, Clin. Orthop., 184, pp. 289-292, (1984); Watkins J., Peabody P., Sports injuries in children and adolescents treated at a sports injury clinic, J. Sports Med. Phys. Fitness, 36, pp. 43-48, (1996); Weaver J.B., Francisco C.B., Pseudofractures, a manifestation of non-suppurative osteomyelitis, J. Bone Joint Surg., 22, pp. 610-615, (1940); Weinert C.R. Jr., McMaster J., Ferguson R.J., Dynamic function of the human fibula, Am. J. Anal., 138, pp. 145-149, (1973); Yngve D.A., Stress fractures in the pediatric athlete, The Pediatric Athlete, pp. 235-240, (1988)","J.P. DiFiori; UCLA Department of Family Medicine, 200 UCLA Medical Plaza Building, Los Angeles, CA 90095, United States; email: jdifiori@ucla.edu","","","01959131","","MSCSB","10416551","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-0033018749" "Rada A.; Kuvačić G.; De Giorgio A.; Sellami M.; Ardigò L.P.; Bragazzi N.L.; Padulo J.","Rada, Ante (57192063621); Kuvačić, Goran (57193744253); De Giorgio, Andrea (57217025911); Sellami, Maha (56021097100); Ardigò, Luca Paolo (6603326166); Bragazzi, Nicola Luigi (57212030091); Padulo, Johnny (54684953400)","57192063621; 57193744253; 57217025911; 56021097100; 6603326166; 57212030091; 54684953400","The ball kicking speed: A new, efficient performance indicator in youth soccer","2019","PLoS ONE","14","5","e0217101","","","","22","10.1371/journal.pone.0217101","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85066107347&doi=10.1371%2fjournal.pone.0217101&partnerID=40&md5=c7bb47d40d3d3e51d175796887b0ed2f","Faculty of Kinesiology, University of Split, Split, Croatia; Sport Performance Lab, University of Split, Split, Croatia; Department of Psychology, University ECampus, Novedrate, Italy; Sport Science Program (SSP), College of Arts and Sciences (CAS), Qatar University, Doha, Qatar; School of Exercise and Sport Science, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy; School of Public Health, Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy; Tunisian Research Laboratory Sports Performance Optimization, National Center of Medicine and Science in Sport, Tunis, Tunisia","Rada A., Faculty of Kinesiology, University of Split, Split, Croatia; Kuvačić G., Faculty of Kinesiology, University of Split, Split, Croatia, Sport Performance Lab, University of Split, Split, Croatia; De Giorgio A., Sport Performance Lab, University of Split, Split, Croatia, Department of Psychology, University ECampus, Novedrate, Italy; Sellami M., Sport Science Program (SSP), College of Arts and Sciences (CAS), Qatar University, Doha, Qatar; Ardigò L.P., School of Exercise and Sport Science, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy; Bragazzi N.L., School of Public Health, Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy; Padulo J., Sport Performance Lab, University of Split, Split, Croatia, Department of Psychology, University ECampus, Novedrate, Italy, Tunisian Research Laboratory Sports Performance Optimization, National Center of Medicine and Science in Sport, Tunis, Tunisia","Success in different soccer skills like kicking depends on motor abilities achieved. Kicking is a soccer fundamental, which depends on many different and complex factors (technique, foot-ball interaction, ball flight, etc.). Therefore, it is important to identify players that are able to perform faster kicks using both dominant and non-dominant leg. The current study investigated some basic variables of different soccer kicking speed and their relevance to success in youth soccer academy. 119 players from the first and the second division participated to this study. They were randomly divided into age groups (U-15, U-17, and U19) and team status (first team, reserves). The diagnostic ability of the different ball kicking speed tests in capturing differences between first team players and reserves among different age categories were computed using the receiver operating characteristics analysis. Results demonstrated that first team players achieved better results when comparing to reserves in each category. In addition, differences were greater in the U-15 and the U-17 than in the U-19 age group. In conclusion, ball kicking speed could be one of the possible identification tools to evaluate players' success in youth soccer. © 2019 Rada et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.","","Adolescent; Athletic Performance; Biomechanical Phenomena; Cross-Sectional Studies; Humans; Lower Extremity; Male; Motor Skills; Muscle, Skeletal; Soccer; Time Factors; article; controlled study; human; juvenile; randomized controlled trial; receiver operating characteristic; soccer; velocity; adolescent; athletic performance; biomechanics; cross-sectional study; lower limb; male; motor performance; physiology; skeletal muscle; soccer; time factor","Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J Sports Sci Med., 6, pp. 154-165, (2007); Bacvarevic B.B., Pazin N., Bozic P., Mirkov D., Kukolj M., Jaric S., Evaluation of a composite test of kicking performance, J Strength Cond Res., 26, pp. 1945-1952, (2012); 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Severino V., Goncalves R.R., Silva M.J.C., Figueiredo A.J., Annals of Research in Sport and Physical Activity, 1, pp. 36-52, (2011); Rada A., Padulo J., Jelaska I., Ardigo L.P., Fumarco L., Relative age effect and second-tiers: No second chance for later-born players, PLoS One., 13, (2018)","","","Public Library of Science","19326203","","POLNC","31100091","English","PLoS ONE","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85066107347" "Dos’Santos T.; Thomas C.; Jones P.A.","Dos’Santos, Thomas (57170712800); Thomas, Christopher (56754565800); Jones, Paul A. (55308526600)","57170712800; 56754565800; 55308526600","How early should you brake during a 180° turn? A kinetic comparison of the antepenultimate, penultimate, and final foot contacts during a 505 change of direction speed test","2021","Journal of Sports Sciences","39","4","","395","405","10","14","10.1080/02640414.2020.1823130","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85098656398&doi=10.1080%2f02640414.2020.1823130&partnerID=40&md5=1b6bc7d791b5c67401d6122a1a9b6a55","Human Performance Laboratory, Directorate of Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom; Department of Sport and Exercise Sciences, Musculoskeletal Science and Sports Medicine Research Centre, Manchester Metropolitan University, Manchester, United Kingdom","Dos’Santos T., Human Performance Laboratory, Directorate of Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom, Department of Sport and Exercise Sciences, Musculoskeletal Science and Sports Medicine Research Centre, Manchester Metropolitan University, Manchester, United Kingdom; Thomas C., Human Performance Laboratory, Directorate of Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom; Jones P.A., Human Performance Laboratory, Directorate of Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom","The aim of the study was to compare ground reaction force (GRF) characteristics between the antepenultimate foot contact (APFC), penultimate foot contact (PFC), and final foot contact (FFC), and to examine the relationships between APFC, PFC, and FFC GRF characteristics with 505 change of direction (COD) speed performance. Twenty university male soccer players performed three COD trials, whereby GRFs were collected over the aforementioned foot contacts. Greater peak braking forces in shorter ground contact times were demonstrated over the APFC compared to the PFC and FFC (p ≤ 0.011, d = 0.96–7.82), while APFC mean GRFs were greater than the PFC (p ≤ 0.001, d = 1.86–7.57). Faster 505 performance was associated with greater APFC peak and mean vertical, horizontal, and resultant braking GRFs (r2 = 21.6–54.5%), greater FFC mean HGRFs (r2 = 38.8%), more horizontally orientated peak resultant APFC and PFC GRFs (r2 = 22.8–55.4%), and greater APFC, PFC, and FFC mean horizontal to vertical GRF ratios (r2 = 32.0–61.9%). Overall, the APFC plays a more pivotal role in facilitating deceleration compared to the PFC for effective 505 performance. Practitioners should develop their athletes’ technical ability to express force horizontally across all foot contacts and coach braking strategies that emphasise greater magnitudes of posteriorly directed APFC GRFs to facilitate faster 505 performance. © 2020 Informa UK Limited, trading as Taylor & Francis Group.","Braking force; deceleration; force-vector; ground contact time; impulse","Acceleration; Athletic Performance; Biomechanical Phenomena; Cross-Sectional Studies; Deceleration; Foot; Humans; Kinetics; Male; Movement; Soccer; Students; Task Performance and Analysis; Time Factors; Universities; adult; article; contact time; deceleration; foot; ground reaction force; human; male; physician; soccer player; acceleration; athletic performance; biomechanics; cross-sectional study; foot; kinetics; movement (physiology); physiology; soccer; student; task performance; time factor; university","Andrews J.R., McLeod W.D., Ward T., Howard K., The cutting mechanism, The American Journal of Sports Medicine, 5, 3, pp. 111-121, (1977); Ashton J., Jones P.A., The reliability of using a laser device to assess deceleration ability, Sports, 7, 8, (2019); Bloomfield J., Polman R., Donoghue P., Physical demands of different positions in FA premier league soccer, Journal of Science and Medicine in Sport, 61, pp. 63-70, (2007); Bourgeois F., McGuigan M.R., Gill N.D., Gamble G., Physical characteristics and performance in change of direction tasks: A brief review and training considerations, The Journal of Australian Strength and Conditioning, 25, pp. 104-117, (2017); Cohen J., Statistical analysis for the behavioral sciences, (1988); Dos' Santos T., McBurnie A., Thomas C., Comfort P., Jones P.A., Biomechanical determinants of the modified and traditional 505 change of direction speed test, Journal Of Strength And Conditioning Research, 34, 5, pp. 1285-1296, (2020); Dos'Santos T., Comfort P., Jones P.A., Average of trial peaks versus peak of average profile: Impact on change of direction biomechanics, Sport Biomechanics, pp. 1-10, (2018); Dos'Santos T., McBurnie A., Thomas C., Comfort P., Jones P.A., Biomechanical comparison of cutting techniques: A review and practical applications, Strength and Conditioning Journal, 414, pp. 40-54, (2019); Dos'Santos T., Thomas C., Comfort P., Jones P.A., The effect of angle and velocity on change of direction biomechanics: An angle-velocity trade-off, Sports Medicine, 48, 10, pp. 2235-2253, (2018); Dos'Santos T., Thomas C., Comfort P., Jones P.A., The role of the penultimate foot contact during change of direction: Implications on performance and risk of injury, Strength and Conditioning Journal, 41, 1, pp. 87-104, (2019); Dos'Santos T., Thomas C., Jones P.A., Comfort P., Mechanical determinants of faster change of direction speed performance in male athletes, Journal ofStrength and Conditioning Research, 31, 3, pp. 696-705, (2017); Dos'Santos T., Thomas C., Jones P.A., Comfort P., Asymmetries in single and triple hop are not detrimental to change of direction speed, Journal of Trainology, 6, 2, pp. 35-41, (2017); Dos'Santos T., Thomas C., Jones P.A., Comfort P., Assessing asymmetries in change of direction speed performance; application of change of direction deficit, Journal ofStrength and Conditioning Research, 33, 11, pp. 2953-2961, (2019); Draper J.A., Lancaster M.G., The 505 test: A test for agility in the horizontal plane, Australian Journal of Science and Medicine in Sport, 17, pp. 15-18, (1985); Duffield R., Drinkwater E.J., Time–motion analysis of test and one-day international cricket centuries, Journal ofSports Sciences, 26, 5, pp. 457-464, (2008); Faul F., Erdfelder E., Buchner A., Lang A.-G., Statistical power analyses using G* Power 3.1: Tests for correlation and regression analyses, Behavior ResearchMethods, 41, 4, pp. 1149-1160, (2009); Flanagan E.P., The effect size statistic - Applications for the strength and conditioning coach, Strength and Conditioning Journal, 35, 5, pp. 37-40, (2013); Foden M., Astley S., Comfort P., McMahon J.J., Matthews M.J., Jones P.A., Relationships between speed, change of direction and jump performance with cricket specific speed tests in male academy cricketers, Journal of Trainology, 4, 2, pp. 37-42, (2015); Graham-Smith P., Atkinson L., Barlow R., Jones P., Braking characteristics and load distribution in 180 degree turns, Presented at proceedings of the 5th annual UKSCA conference, (2009); Graham-Smith P., Rumpf M., Jones P.A., Assessment of deceleration ability and relationship to approach speed and eccentric strength, Presented at ISBS proceedings archive, (2018); Greig M., The influence of soccer-specific activity on the kinematics of an agility sprint, European Journal of Sport Science, 9, 1, pp. 23-33, (2009); Greig M., Naylor J., The efficacy of angle-matched isokinetic knee flexor and extensor strength parameters in predicting agility test performance, International Journal of Sports Physical Therapy, 12, 5, (2017); Haff G.G., Ruben R.P., Lider J., Twine C., Cormie P., A comparison of methods for determining the rate of force development during isometric midthigh clean pulls, Journal Of Strength And Conditioning Research, 292, pp. 386-395, (2015); Harper D.J., Jordan A.R., Kiely J., Relationships between eccentric and concentric knee strength capacities and maximal linear deceleration ability in male academy soccer players, Journal ofStrength and Conditioning Research, Publish Ahead of Print, (2018); Hopkins W.G., A scale of magnitudes for effect statistics. A new view of statistics, (2002); Jones P.A., Herrington L., Graham-Smith P., Braking characteristics during cutting and pivoting in female soccer players, Journal of Electromyography and Kinesiology, 301, pp. 46-54, (2016); Jones P.A., Herrington L., Graham-Smith P., Technique determinants of knee abduction moments during pivoting in female soccer players, Clinical Biomechanics, 31, pp. 107-112, (2016); Jones P.A., Stones S., Smith L., A comparison of braking characteristics between pre-planned and unanticipated changing direction tasks in female soccer players: An exploratory study. Day 1. Posters–biomechanics, BASES annual conference, 25 November 2014, St Georges Park, Burton, Journal of Sports Sciences, 32, pp. S25-S26, (2014); Jones P.A., Thomas C., Dos'Santos T., McMahon J., The G.S.P., Role of eccentric strength in 180° turns in female soccer players, Sports, 5, 2, (2017); Koo T.K., Li M.Y., A guideline of selecting and reporting intraclass correlation coefficients for reliability research, Journal of Chiropractic Medicine, 15, 2, pp. 155-163, (2016); Lu T.W., Chang C.F., Biomechanics of human movement and its clinical applications, The Kaohsiung Journal of Medical Sciences, 28, 2, pp. S13-S25, (2012); Morin J.-B., Edouard P., Samozino P., Technical ability of force application as a determinant factor of sprint performance, Medicine & Science inSports & Exercise, 43, 9, pp. 1680-1688, (2011); Nedergaard N.J., Kersting U., Lake M., Using accelerometry to quantify deceleration during a high-intensity soccer turning manoeuvre, Journal ofSports Sciences, 32, 20, pp. 1897-1905, (2014); Nimphius S., Increasing agility, High-performance training for sports, pp. 185-198, (2014); Nimphius S., Training change of direction and agility, Advanced strength and conditioning, pp. 291-308, (2017); Nimphius S., Callaghan S.J., Bezodis N.E., Lockie R.G., Change of direction and agility tests: Challenging our current measures of performance, Strength and Conditioning Journal, 40, 1, pp. 26-38, (2017); Robinson G., O'Donoghue P., Nielson P., Path changes and injury risk in English FA Premier League soccer, International Journal of Performance Analysis in Sport, 11, pp. 40-56, (2011); Sweeting A.J., Aughey R.J., Cormack S.J., Morgan S., Discovering frequently recurring movement sequences in team-sport athlete spatiotemporal data, Journal of Sports Sciences, 35, 24, pp. 2439-2445, (2017); Welch N., Richter C., Franklyn-Miller A., Moran K., Principal component analysis of the associations between kinetic variables in cutting and jumping, and cutting performance outcome, Journal of Strength and Conditioning Research, (2019); Yeadon M.R., Kato T., Kerwin D.G., Measuring running speed using photocells, Journal of Sports Sciences, 17, 3, pp. 249-257, (1999); Young W.B., Dawson B., Henry G.J., Agility and change-of-direction speed are independent skills: Implications for training for agility in invasion sports, International Journal of Sports Science & Coaching, 10, 1, pp. 159-169, (2015)","T. Dos’Santos; Manchester Metropolitan University, United Kingdom; email: t.dossantos@edu.salford.ac.uk","","Routledge","02640414","","JSSCE","33377421","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85098656398" "McGhie D.; Ettema G.","McGhie, David (37665498900); Ettema, Gertjan (55928778800)","37665498900; 55928778800","Biomechanical analysis of traction at the shoe-surface interface on third-generation artificial turf","2013","Sports Engineering","16","2","","71","80","9","14","10.1007/s12283-013-0115-1","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878106251&doi=10.1007%2fs12283-013-0115-1&partnerID=40&md5=81ff20a6a8a3e1bdb6889e70fd932244","Department of Human Movement Science, Norwegian University of Science and Technology, 7491 Trondheim, Norway; Centre for Sport Facilities and Technology, Department of Civil and Transport Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway","McGhie D., Department of Human Movement Science, Norwegian University of Science and Technology, 7491 Trondheim, Norway, Centre for Sport Facilities and Technology, Department of Civil and Transport Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway; Ettema G., Department of Human Movement Science, Norwegian University of Science and Technology, 7491 Trondheim, Norway","The existing knowledge of traction on artificial turf is based almost exclusively on mechanical devices. While most attention has traditionally been concentrated on rotational traction, sports such as soccer predominantly involve translational movements. The aim of the study was to investigate whether translational traction at the shoe-surface interface differed between various third-generation artificial turf systems in combination with different cleat configurations in vivo. Twenty-two male soccer players performed five short sprints with a 90° cut over a turf-covered force plate for each combination of three turf systems and three cleat configurations. The results showed that, despite various differences in other traction measures, traction coefficients were almost identical across turf systems and cleat configurations. © 2013 International Sports Engineering Association.","Artificial turf; Biomechanics; Cleats; Soccer; Traction","Biomechanics; Electric traction; Engineering; Industrial engineering; Artificial turfs; Biomechanical analysis; Cleats; Mechanical device; Soccer; Soccer player; Third generation; Traction coefficient; SportS","FIFA quality concept for football turf, Handbook of Requirements, (2009); FIFA Laws of the Game, (2011); Dragoo J.L., Braun H.J., The effect of playing surface on injury rate. A review of the current literature, Sports Med, 40, 11, pp. 981-990, (2010); NISOs arbeidslivsundersøkelser, Kunstgress 2007: 84% foretrekker naturgress, (2007); NISOs arbeidslivsundersøkelser, Kunstgress 2007: -Flest skader på kunstgress, (2007); Bonstingl R.W., Morehouse C.A., Niebel B.W., Torques developed by different types of shoes on various playing surfaces, Med Sci Sports, 7, pp. 127-131, (1975); Shorten M., Hudson B., Himmelsbach J., Shoe-surface traction of conventional and in-filled synthetic turf football surfaces, Proceedings XIX International Congress of Biomechanics, (2003); Frederick E.C., Optimal frictional properties for sport shoes and sport surfaces, Biomechanics in sports XI. In: Proceedings of the XIth symposium of the international society of biomechanics in sports, 11, pp. 15-22, (1993); Villwock M.R., Meyer E.G., Powell J.W., Fouty A.J., Haut R.C., The effects of various infills, fibre structures, and shoe designs on generating rotational traction on an artificial surface, J Sports Engng Technol, 223, 1, pp. 11-19, (2009); Livesay G.A., Reda D.R., Nauman E.A., Peak torque and rotational stiffness developed at the shoe-surface interface, Am J Sports Med, 34, 3, pp. 415-422, (2006); Villwock M.R., Meyer E.G., Powell J.W., Fouty A.J., Haut R.C., Football playing surface and shoe design affect rotational traction, Am J Sports Med, 37, 3, pp. 518-525, (2009); Severn A.K., Fleming P.R., Dixon N., Science of synthetic turf surfaces: player-surface interactions, Sports Technol, 3, 1, pp. 13-25, (2010); Kuhlman S., Sabick M., Pfeiffer R., Cooper B., Forhan J., Effect of loading condition on the traction coefficient between shoes and artificial turf surfaces, J Sports Engng Technol, 224, pp. 155-165, (2009); Severn A.K., Fleming P.R., Clarke J.D., Carre M.J., Science of synthetic turf surfaces: investigating traction behavior, J Sports Engng Technol, 225, pp. 147-158, (2011); Sabick M., Cooper B., Kuhlman S., Pfeiffer R., Balancing risks, rewards of athletic shoe traction, Lower Extremity Review, (2009); Wannop J.W., Luo G., Stefanyshyn D.J., Footwear traction at different areas on artificial and natural grass fields, Sports Eng, 15, pp. 111-116, (2012); Sterzing T., Muller C., Milani T.L., Traction on artificial turf: development of a soccer shoe outsole, Footwear Sci, 2, 1, pp. 37-49, (2010); Kirk R.F., Noble I.S.G., Mitchell T., Rolf C., Haake S.J., Carre M.J., High-speed observations of football-boot-surface interactions of players in their natural environment, Sports Eng, 10, pp. 129-144, (2007); Cawley P.W., Heidt Jr. R.S., Scranton Jr. P.E., Losse G.M., Howard M.E., Physiologic axial load, frictional resistance, and the football shoe-surface interface, Foot Ankle Int, 24, 7, pp. 551-556, (2003); Heidt Jr. R.S., Dormer S.G., Cawley P.W., Scranton Jr. P.E., Losse G., Howard M., Differences in friction and torsional resistance in athletic shoe-turf surface interfaces, Am J Sports Med, 24, 6, pp. 834-842, (1996); Alentorn-Geli E., Myer G.D., Silvers H.J., Samitier G., Romero D., Lazaro-Haro C., Cugat R., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: mechanisms of injury and underlying factors, Knee Surg Sports Traumatol Arthrosc, 17, 7, pp. 705-729, (2009); Andreasson G., Lindenberger U., Renstrom P., Peterson L., Torque developed at simulated sliding between sport shoes and an artificial turf, Am J Sports Med, 14, pp. 225-230, (1986); Bowers K.D., Martin R.B., Cleat-surface friction on new and old AstroTurf, Med Sci Sports Exerc, 7, 2, pp. 132-135, (1975); Newton R., Doan B., Meese M., Conroy B., Black K., Sebastianelli W., Kramer W., Interaction of wrestling shoe and competition surface: effects on coefficient of friction with implications for injury, Sports Biomech, 1, 2, pp. 157-166, (2002); Lloyd D.G., Stevenson M.G., Dynamic friction measurements on artificial sports turf, J Sports Turf Res Inst, 66, pp. 149-159, (1990); Wannop J.W., Worobets J.T., Stefanyshyn D.J., Footwear traction and lower extremity joint loading, Am J Sports Med, 38, 6, pp. 1221-1228, (2010); FIFA quality concept for football turf, Handbook of test methods, (2009); Valiant G.A., Friction-slipping-traction, Sportverl Sportschad, 7, 4, pp. 171-178, (1993); Ferris D.P., Liang K., Farley C.T., Runners adjust leg stiffness for their first step on a new surface, J Biomech, 32, pp. 787-794, (1999); Pedroza A., Fernandez S., Heidt Jr. R., Kaeding C., Evaluation of the shoe-surface interaction using an agility maneuver, Med Sci Sports Exerc, 42, 9, pp. 1754-1759, (2010); Nigg B.M., Segesser B., The influence of playing surfaces on the load of the locomotor system and on football and tennis injuries, Sports Med, 5, 6, pp. 375-385, (1988); Nigg B.M., Yeadon M.R., Biomechanical aspects of playing surfaces, J Sports Sci, 5, pp. 117-145, (1987); Stanitski C.L., McMaster J.H., Ferguson R.J., Synthetic turf and grass: a comparative study, J Sports Med, 2, 1, pp. 22-26, (1974)","D. McGhie; Department of Human Movement Science, Norwegian University of Science and Technology, 7491 Trondheim, Norway; email: david.mcghie@svt.ntnu.no","","","14602687","","","","English","Sports Eng.","Article","Final","","Scopus","2-s2.0-84878106251" "Fullenkamp A.M.; Campbell B.M.; Laurent C.M.; Lane A.P.","Fullenkamp, Adam M. (56326010000); Campbell, Brian M. (55433207000); Laurent, C. Matthew (16316438800); Lane, Amanda Paige (56911785800)","56326010000; 55433207000; 16316438800; 56911785800","The contribution of trunk axial kinematics to poststrike ball velocity during maximal instep soccer kicking","2015","Journal of Applied Biomechanics","31","5","","370","376","6","14","10.1123/jab.2014-0188","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84944688878&doi=10.1123%2fjab.2014-0188&partnerID=40&md5=f9683b6ac1a4164c4712a2483f82d2bf","Department of Exercise Science, Bowling Green State University, Bowling Green, OH, United States","Fullenkamp A.M., Department of Exercise Science, Bowling Green State University, Bowling Green, OH, United States; Campbell B.M., Department of Exercise Science, Bowling Green State University, Bowling Green, OH, United States; Laurent C.M., Department of Exercise Science, Bowling Green State University, Bowling Green, OH, United States; Lane A.P., Department of Exercise Science, Bowling Green State University, Bowling Green, OH, United States","To date, biomechanical analyses of soccer kicking have focused predominantly on lower-extremity motions, with little emphasis on the trunk and upper body. The purpose of this study was to evaluate differences in trunk axial kinematics between novice (n = 10) and skilled (n = 10) participants, as well as to establish the relationship of trunk axial motion and sagittal plane thigh rotation to poststrike ball velocity. Three-dimensional body segmental motion data were captured using high-resolution motion analysis (120 Hz) while each participant completed 5 maximal instep soccer-style kicks. The results demonstrate that skilled participants use 53% greater axial trunk range of motion compared with novice participants (P < .01), as well as 62% greater peak trunk rotation velocity (P < .01). The results also show a moderate, positive correlation of peak trunk rotation velocity with poststrike ball velocity (r = .57; P < .01), and peak hip flexion velocity with poststrike ball velocity (r = .63; P < .01). The current study highlights the potential for trunk rotation-specific training to improve maximum instep kick velocity in developing soccer athletes. © 2015 Human Kinetics, Inc.","Axial rotation velocity; Novice vs. skilled; Torso rotation","Acceleration; Athletic Performance; Biomechanical Phenomena; Humans; Imaging, Three-Dimensional; Lower Extremity; Male; Range of Motion, Articular; Rotation; Soccer; Thorax; Young Adult; Football; Kinematics; Rotation; Axial rotation; Biomechanical analysis; Novice vs. skilled; Positive correlations; Range of motions; Rotation velocity; Segmental motion; Three-dimensional body; adult; Article; artifact reduction; athlete; body mass; human; kinematics; male; motion; motor performance; muscle strength; normal human; poststrike ball velocity; range of motion; soccer; trunk; trunk axial kinematics; velocity; waveform; acceleration; athletic performance; biomechanics; joint characteristics and functions; lower limb; physiology; rotation; soccer; thorax; three dimensional imaging; young adult; Velocity","Davids K., Lees A., Burwitz L., Understanding and measuring coordination and control in kicking skills in soccer: Implications for talent identifcation and skill acquisition, J Sports Sci, 18, pp. 703-714, (2000); Amiri-Khorasani M., Mohammad Kazemi R., Sarafrazi S., Riyahi-Malayeri S., Sotoodeh V., Kinematics analyses related to stretch-shortening cycle during soccer instep kicking after different acute stretching, J Strength Cond Res, 26, 11, pp. 3010-3017, (2012); Barfeld W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, J Sports Sci Med, 1, pp. 72-79, (2002); Giagazoglou P., Katis A., Kellis E., Natsikas C., Differences in soccer kick kinematics between blind players and controls, Adapt Phys Activ Q, 28, pp. 251-266, (2011); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomech, 4, 1, pp. 59-72, (2005); Juarez D., Mallow J., De Subijana C.L., Navarro E., Kinematic analysis of kicking in young top-class soccer players, J Sports Med Phys Fitness, 51, 3, pp. 366-373, (2011); Kellis E., Katis A., Vrabas I.S., Effects of an intermittent exercise fatigue protocol on biomechanics of soccer kick performance, Scand J Med Sci Sports, 16, pp. 334-344, (2006); Scurr J.C., Abbott V., Ball N., Quadriceps EMG muscle activation during accurate soccer instep kicking, J Sports Sci, 29, 3, pp. 247-251, (2011); Ball K., Biomechanical considerations of distance kicking in Australian Rules football, Sports Biomech, 7, 1, pp. 10-23, (2008); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biome-chanical differences in soccer kicking with the preferred and the non-preferred leg, J Sports Sci, 20, 4, pp. 293-299, (2002); Ishii H., Yanagiya T., Naito H., Katamoto S., Maruyama T., Theoretical study of factors affecting ball velocity in instep soccer kicking, J Appl Biomech, 28, pp. 258-270, (2012); Sterzing T., Hennig E.M., The infuence of soccer shoes on kicking velocity in full-instep kicks, Exerc Sport Sci Rev, 36, 2, pp. 91-97, (2008); Young W.B., Rath D.A., Enhancing foot velocity in football kicking: The role of strength training, J Strength Cond Res, 25, 2, pp. 561-566, (2011); Naito K., Fukui Y., Maruyama T., Multijoint kinetic chain analysis of knee extension during the soccer instep kick, Hum Mov Sci, 29, pp. 259-276, (2010); Orloff H., Sumida B., Chow J., Habibi L., Fujino A., Kramer B., Ground reaction forces and kinematics of plant leg position during instep kicking in male and female collegiate soccer players, Sports Biomech, 7, 2, pp. 238-247, (2008); Naito K., Fukui Y., Maruyama T., Energy redistribution analysis of dynamic mechanisms of multi-body, multi-joint kinetic chain move-ment during soccer instep kicks, Hum Mov Sci, 31, pp. 161-181, (2012); Shan G., Yuan J., Hao W., Gu M., Zhang X., Regression equations for estimating the quality of maximal instep kick by males and females in soccer, Kinesiology, 44, 2, pp. 139-147, (2012); Davis Iii. R.B., Ounpuu S., Tyburski D., Gage J.R., A gait analysis data collection and reduction technique, Hum Mov Sci, 10, pp. 575-587, (1991); Charnock B.L., Lewis C.L., Garrett W.E., Queen R.M., Adductor longus mechanics during the maximal effort soccer kick, Sports Biomech, 8, 3, pp. 223-234, (2009); Cohen J., A power primer, Psychol Bull, 112, pp. 155-159, (1992); Kawamoto R., Miyagi O., Ohashi J., Fukashiro S., Kinetic comparison of a side-foot soccer kick between experienced and inexperienced players, Sports Biomech, 6, 2, pp. 187-198, (2007); Sedano S., Matheu A., Redondo J.C., Cuadrado G., Effects of plyomet-ric training on explosive strength, acceleration capacity and kicking speed in young elite soccer players, J Sports Med Phys Fitness, 51, pp. 50-58, (2011); Manolopoulos E., Papadopoulos C., Kellis E., Effects of combined strength and kick coordination training on soccer kick biomechanics in amateur players, Scand J Med Sci Sports, 16, pp. 102-110, (2006); Fitts P.M., The information capacity of the human motor system in controlling the amplitude of movement, J Exp Psychol, 47, 6, pp. 381-391, (1954)","A.M. Fullenkamp; Department of Exercise Science, Bowling Green State University, Bowling Green, United States; email: fullena@bgsu.edu","","Human Kinetics Publishers Inc.","10658483","","JABOE","26099160","English","J. Appl. Biomech.","Article","Final","","Scopus","2-s2.0-84944688878" "Celebrini R.G.; Eng J.J.; Miller W.C.; Ekegren C.L.; Johnston J.D.; Depew T.A.; Macintyre D.L.","Celebrini, Richard G. (54882312000); Eng, Janice J. (7102461610); Miller, William C. (56191693600); Ekegren, Christina L. (34968943200); Johnston, James D. (24483529300); Depew, Thomas A. (56080423500); Macintyre, Donna L. (7101720309)","54882312000; 7102461610; 56191693600; 34968943200; 24483529300; 56080423500; 7101720309","Effect of a novel movement strategy in decreasing ACL risk factors in female adolescent soccer players: A randomized controlled trial","2014","Clinical Journal of Sport Medicine","24","2","","134","141","7","16","10.1097/JSM.0000000000000014","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896706398&doi=10.1097%2fJSM.0000000000000014&partnerID=40&md5=089398b23c95e67d90bcbc9ce83b7f5b","Program in Rehabilitation Sciences, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada; Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC V6T 1Z3, 212-2177 Wesbrook Mall, Canada; Departments of Occupational Science and Occupational Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada; Department of Epidemiology and Preventive Medicine, Monash University, Monash, VIC, Australia; Department of Mechanical Engineering, University of Saskatchewan, Saskatoon, SK, Canada; Department of Physics and Astronomy, University of British Columbia, Vancouver, BC, Canada","Celebrini R.G., Program in Rehabilitation Sciences, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada; Eng J.J., Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC V6T 1Z3, 212-2177 Wesbrook Mall, Canada; Miller W.C., Departments of Occupational Science and Occupational Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada; Ekegren C.L., Department of Epidemiology and Preventive Medicine, Monash University, Monash, VIC, Australia; Johnston J.D., Department of Mechanical Engineering, University of Saskatchewan, Saskatoon, SK, Canada; Depew T.A., Department of Physics and Astronomy, University of British Columbia, Vancouver, BC, Canada; Macintyre D.L., Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC V6T 1Z3, 212-2177 Wesbrook Mall, Canada","OBJECTIVE: To determine the effect of a novel movement strategy incorporated within a soccer warm-up on biomechanical risk factors for anterior cruciate ligament injury during 3 sport-specific movement tasks. DESIGN: Single-blind, randomized controlled clinical trial. SETTING: Laboratory setting. PARTICIPANTS: Twenty top-tier female teenage soccer players. INTERVENTIONS: Subjects were randomized to the Core Position and Control movement strategy (Core-PAC) warm-up or standard warm-up, which took place before their regular soccer practice over a 6-week period. The Core-PAC focuses on getting the centre of mass closer to the plant foot or base of support. MAIN OUTCOME MEASURES: Peak knee flexion angle and abduction moments during a side-hop (SH), side-cut, and unanticipated side-cut task after the 6 weeks with (intervention group only) and without a reminder to use the Core-PAC strategy. RESULTS: The Core-PAC group increased peak flexion angles during the SH task [mean difference = 6.2 degrees; 95% confidence interval (CI), 1.9-10.5 degrees; effect size = 1.01; P = 0.034] after the 6-week warm-up program without a reminder. In addition, the Core-PAC group demonstrated increased knee flexion angles for the side-cut (mean difference = 8.5 degrees; 95% CI, 4.8-12.2 degrees; ES = 2.02; P = 0.001) and SH (mean difference = 10.0 degrees; 95% CI, 5.7-14.3 degrees; ES = 1.66; P = 0.001) task after a reminder. No changes in abduction moments were found. CONCLUSIONS: The results of this study suggest that the Core-PAC may be one method of modifying high-risk soccer-specific movements and can be implemented within a practical, team-based soccer warm-up. The results should be interpreted with caution because of the small sample size. Copyright © 2014 Female Athlete Triad Coalition.","biomechanics; injury prevention; knee; treatment outcome","Adolescent; Anterior Cruciate Ligament; Biomechanical Phenomena; Female; Humans; Knee Joint; Movement; Risk Factors; Single-Blind Method; Soccer; Warm-Up Exercise; abduction; adolescent; anterior cruciate ligament injury; article; athlete; biomechanics; clinical article; controlled study; female; human; knee function; movement (physiology); priority journal; randomized controlled trial; risk factor; soccer; task performance; warm up; anterior cruciate ligament; injuries; knee; movement (physiology); physiology; single blind procedure; soccer","Boden B.P., Dean G.S., Feagin Jr. J.A., Et al., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Krosshaug T., Nakamae A., Boden B.P., Et al., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, Am J Sports Med, 35, pp. 359-367, (2007); Griffin L.Y., Agel J., Albohm M.J., Et al., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, J Am Acad Orthop Surg, 8, pp. 141-150, (2000); Alentorn-Geli E., Myer G.D., Silvers H.J., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: Mechanisms of injury and underlying risk factors, Knee Surg Sports Traumatol Arthrosc, 17, pp. 705-729, (2009); Renstrom P., Ljungqvist A., Arendt E., Et al., Non-contact ACL injuries in female athletes: An International Olympic Committee current concepts statement, Br J Sports Med, 42, pp. 394-412, (2008); Cowling E.J., Steele J.R., McNair P.J., Effect of verbal instructions on muscle activity and risk of injury to the anterior cruciate ligament during landing, Br J Sports Med, 37, pp. 126-130, (2003); Dempsey A.R., Lloyd D.G., Elliott B.C., Et al., Changing sidestep cutting technique reduces knee valgus loading, Am J Sports Med, 37, pp. 2194-2200, (2009); Mizner R.L., Kawaguchi J.K., Chmielewski T.L., Muscle strength in the lower extremity does not predict postinstruction improvements in the landing patterns of female athletes, J Orthop Sports Phys Ther, 38, pp. 353-361, (2008); Onate J.A., Guskiewicz K.M., Marshall S.W., Et al., Instruction of jumplanding technique using videotape feedback: Altering lower extremity motion patterns, Am J Sports Med, 33, pp. 831-842, (2005); Hewett T.E., Paterno M.V., Myer G.D., Strategies for enhancing proprioception and neuromuscular control of the knee, Clin Orthop Relat Res, 402, pp. 76-94, (2002); Pollard C.D., Sigward S.M., Powers C.M., Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments, Clin Biomech (Bristol, Avon), 25, pp. 142-146, (2010); Celebrini R.G., Eng J.J., Miller W.C., Et al., The effect of a novel movement strategy in decreasing ACL risk factors in female adolescent soccer players, J Strength Cond Res, 26, pp. 3406-3417, (2012); Emery C.A., Meeuwisse W.H., Risk factors for injury in indoor compared with outdoor adolescent soccer, Am J Sports Med, 34, pp. 1636-1642, (2006); Ford K.R., Myer G.D., Toms H.E., Et al., Gender differences in the kinematics of unanticipated cutting in young athletes, Med Sci Sports Exerc, 37, pp. 124-129, (2005); Jian Y., Winter D.A., Ishac M.G., Et al., Trajectory of the body COG and COP during initiation and termination of gait, Gait Posture, 1, pp. 9-22, (1993); Eng J.J., Winter D.A., Kinetic analysis of the lower limbs during walking what information can be gained from a three-dimensional model?, J Biomech, 28, pp. 753-758, (1995); Winter D., Biomechanics and Motor Control of Human Movement, (2009); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, J Biomech Eng, 105, pp. 136-144, (1983); Dempsey A.R., Lloyd D.G., Elliott B.C., Et al., The effect of technique change on knee loads during sidestep cutting, Med Sci Sports Exerc, 39, pp. 1765-1773, (2007); Sigward S.M., Powers C.M., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clin Biomech (Bristol, Avon), 21, pp. 41-48, (2006); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Et al., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes: 2-year follow-up, Am J Sports Med, 33, pp. 1003-1010, (2005); Myklebust G., Engebretsen L., Braekken I.H., Et al., Prevention of anterior cruciate ligament injuries in female team handball players: A prospective intervention study over three seasons, Clin J Sport Med, 13, pp. 71-78, (2003); Soligard T., Myklebust G., Steffen K., Et al., Comprehensive warm-up programme to prevent injuries in young female footballers: Cluster randomised controlled trial, BMJ, 337, (2008); Wulf G., Lauterbach B., Toole T., The learning advantages of an external focus of attention in golf, Res Q Exerc Sport, 70, pp. 120-126, (1999); Richardson C.A., Jull G.A., Muscle control-pain control. What exercises would you prescribe?, Man Ther, 1, pp. 2-10, (1995); Sigward S., Powers C.M., The influence of experience on knee mechanics during side-step cutting in females, Clin Biomech (Bristol, Avon), 21, pp. 740-747, (2006); Donnelly C.J., Elliott B.C., Tla D., Et al., Changes in knee joint biomechanics following balance and technique training and a season of Australian football, Br J Sports Med, 46, pp. 917-922, (2012); McLean S.G., The ACL injury enigma: We can't prevent what we don't understand, J Athl Train, 43, pp. 538-540, (2008); Chappell J.D., Limpisvasti O., Effect of a neuromuscular training program on the kinetics and kinematics of jumping tasks, Am J Sports Med, 36, pp. 1081-1086, (2008)","J.J. Eng; Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC V6T 1Z3, 212-2177 Wesbrook Mall, Canada; email: Janice.Eng@ubc.ca","","Lippincott Williams and Wilkins","1050642X","","CJSME","24184850","English","Clin. J. Sport Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84896706398" "Shan G.; Zhang X.; Wan B.; Yu D.; Wilde B.; Visentin P.","Shan, Gongbing (7005942347); Zhang, Xiang (54381067000); Wan, Bingjun (57188647961); Yu, Daifeng (55569969000); Wilde, Brandie (7005399121); Visentin, Peter (7003972128)","7005942347; 54381067000; 57188647961; 55569969000; 7005399121; 7003972128","Biomechanics of coaching maximal instep soccer kick for practitioners","2019","Interdisciplinary Science Reviews","44","1","","12","20","8","12","10.1080/03080188.2018.1534359","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85057549759&doi=10.1080%2f03080188.2018.1534359&partnerID=40&md5=4ff689eda325dd37f3ba148046744f9a","Department of Kinesiology, University of Lethbridge, Lethbridge, AB, Canada; Department of Physical Education, Xinzhou Teachers University, Xinzhou, China; School of Physical Education, Shaanxi Normal University, Xian, China; Experimental Center, Shandong Institute of Physical Education and Sport, Jinan, China; Faculty of Fine Arts, University of Lethbridge, Lethbridge, AB, Canada","Shan G., Department of Kinesiology, University of Lethbridge, Lethbridge, AB, Canada, Department of Physical Education, Xinzhou Teachers University, Xinzhou, China, School of Physical Education, Shaanxi Normal University, Xian, China; Zhang X., Department of Kinesiology, University of Lethbridge, Lethbridge, AB, Canada, Department of Physical Education, Xinzhou Teachers University, Xinzhou, China; Wan B., Department of Kinesiology, University of Lethbridge, Lethbridge, AB, Canada, School of Physical Education, Shaanxi Normal University, Xian, China; Yu D., Experimental Center, Shandong Institute of Physical Education and Sport, Jinan, China; Wilde B., Department of Kinesiology, University of Lethbridge, Lethbridge, AB, Canada; Visentin P., Faculty of Fine Arts, University of Lethbridge, Lethbridge, AB, Canada","Kicking in soccer has been the subject of scientific research for more than 40 years yet review articles summarizing the biomechanical fundamentals of kick optimization as a guide to coaching are scarcely to be found. The current review article aims to bridge the gap between scientific research into the maximal instep kick (including studies employing 3D motion capture and full-body biomechanical modelling) and the application of such research in coaching. It does so by supplying a scientifically founded, coaching-friendly article explaining identifiable characteristics and motor control sequencing that define this skill. Relevant biomechanical factors are identified in a way that should help coaches better develop training programmes and, at the same time, foster better understanding of the skill among athletes. Such information will contribute to both accelerated skill acquisition and, by concomitant gains in skill efficiency, the development of programmes that minimize risk of injury to athletes during training. © 2018, © 2018 Institute of Materials, Minerals and Mining Published by Taylor & Francis on behalf of the Institute.","approaching; the gender; the placement of the supporting foot before the kick; the position of the kicking foot at impact; the tension arc","Three dimensional computer graphics; approaching; the gender; the placement of the supporting foot before the kick; the position of the kicking foot at impact; the tension arc; Sports","Egan C.D., Vwerheul M.H.G., Savelsbergh G.J.P., Effects of Experience on the Coordination of Internally and Externally Timed Soccer Kicks, Journal of Motor Behaviour, 39, pp. 423-432, (2007); Kollath E., Analyse des Innenspannstoßes aus biomechanischer Sicht, Fußballtraining, 2, 5, pp. 15-20, (1983); Komi P., Stretch-shortening Cycle: A Powerful Model to Study Normal and Fatigued Muscle, Journal of Biomechanics, 33, 10, pp. 1197-1206, (2000); Lees A., Asai T., Andersen T., Nunome H., Sterzing T., The Biomechanics of Kicking in Soccer: A Review, Journal of Sports Sciences, 28, 8, pp. 805-817, (2010); Lees A., Nolan L., Three Dimensional Kinematic Analysis of the Instep Kick Under Speed and Accuracy Conditions, (2002); Magill R.A., Motor Learning - Concepts and Applications, (2001); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact Phase Kinematics of Instep Kicking in Soccer, Journal of Sports Sciences, 24, pp. 11-22, (2006); Reilly T., Williams M., Science and Soccer, (2003); Roberts E., Metcalfe A., Mechanical Analysis of Kicking, (1967); Rodano R., Tavana R., Three Dimensional Analysis of the Instep Kick in Professional Soccer Players, Science and Football II, pp. 357-361, (1993); Shan G., Influence of Gender and Experience on the Maximal Instep Soccer Kick, European Journal of Sport Science, 9, 2, pp. 107-114, (2009); Shan G., Biomechanical Know-how of Fascinating Soccer-kicking Skills–3D, Full-body Demystification of Maximal Instep Kick, Bicycle Kick & Side Volley, 8th International Scientific Conference on Kinesiology, pp. 133-135, (2017); Shan G., Daniels D., Wang C., Wutzke C., Lemire G., Biomechanical Analysis of Maximal Instep Kick by Female Soccer Players, Journal of Human Movement Studies, 49, pp. 149-168, (2005); Shan G., Visentin P., Zhang X., Hao W., Yu D., Bicycle Kick in Soccer: Is the Virtuosity Systematically Entrainable?, Science Bulletin, 60, 8, pp. 819-821, (2015); Shan G., Westerhoff P., Full-body Kinematic Characteristics of the Maximal Instep Soccer Kick by Male Soccer Players and Parameters Related to Kick Quality, Sports Biomechanics, 4, 1, pp. 59-72, (2005); Shan G., Yuan J., Hao W., Gu M., Zhang X., Regression Equations Related to the Quality Evaluation of Soccer Maximal Instep Kick for Males and Females, Kinesiology, 44, 2, pp. 139-147, (2012); Shan G., Zhang X., From 2D Leg Kinematics to 3D Full-body Biomechanics–The Past, Present and Future of Scientific Analysis of Maximal Instep Kick in Soccer, Sports Medicine, Arthroscopy, Rehabilitation, Therapy & Technology, 3, (2011); Stoner L., Ben-Sira D., Variation in Movement Patterns of Professional Soccer Players When Executing a Long Range in-Step Soccer Kick, (1981); Tol J.L., Slim E., Soest A.J., Dijk C.N., The Relationship of the Kicking Action in Soccer and Anterior Ankle Impingement Syndrome, American Journal of Sports Medicine, 30, pp. 45-50, (2002); Willimczik K., Biomechanik der Sportarten, (1989)","G. Shan; Department of Kinesiology, University of Lethbridge, Lethbridge, 4401 University Drive, T1K 3M4, Canada; email: g.shan@uleth.ca","","Taylor and Francis Ltd.","03080188","","","","English","Interdiscip. Sci. Rev.","Article","Final","","Scopus","2-s2.0-85057549759" "Wallden M.; Walters N.","Wallden, Matthew (8201605200); Walters, Nick (57196644414)","8201605200; 57196644414","Does lumbo-pelvic dysfunction predispose to hamstring strain in professional soccer players?","2005","Journal of Bodywork and Movement Therapies","9","2","","99","108","9","15","10.1016/j.jbmt.2004.03.005","https://www.scopus.com/inward/record.uri?eid=2-s2.0-14644393028&doi=10.1016%2fj.jbmt.2004.03.005&partnerID=40&md5=9ce97c44a98b0a29b41781663853b986","Brit. Coll. of Osteopathic Medicine, London, Sumpter Close, 120-122 Finchley Road, United Kingdom","Wallden M., Brit. Coll. of Osteopathic Medicine, London, Sumpter Close, 120-122 Finchley Road, United Kingdom; Walters N., Brit. Coll. of Osteopathic Medicine, London, Sumpter Close, 120-122 Finchley Road, United Kingdom","Purpose: It has been reported that hamstring strain in athletes is commonly followed by subsequent hamstring strains (Am. J. Sports Med. 30(2) (2002) 199). The current management of these injuries is oftentimes unsuccessful and may plague the athlete throughout their sporting career. The aim of this study was to test the hypothesis that hamstring strain can be a ""symptom"" secondary to dysfunction in other parts of the same biomechanical chain. For reasons explained below, the functionality of the lumbo-pelvic mechanism was selected for assessment in a retrospective double-blinded randomized controlled experimental design. A by-product of the research methodology was the discrimination of predictive value between manual and machine assessment techniques. Methods: Five professional soccer teams sent 20 players with and without histories of hamstring injury for assessment of their lumbo-pelvic mechanisms (subjects=20, of which 15 were Hamstring group and 5 were controls, i.e. one control from each club). Each player followed the same procedure; first, their lumbo-pelvic mechanics were manually assessed using a standardized evaluation by the same blinded manual therapist; second, each player was assessed on a Cybex Norm dynamometer for trunk flexion-extension values. The data were analysed, and subsequently, the medical histories of the players were revealed. Results: Manual assessment revealed higher levels of lumbo-pelvic dysfunction in the hamstring group - particularly in players with recurrent strains (though not statistically significant). Cybex assessment appeared to be less sensitive than manual assessment. However, for subjects who had a greater time period out of competitive play, the dynamometry was more sensitive; indicating its use in assessing deconditioning syndromes. There was no statistical correlation between manual and dynamometer assessment results. Statistical evaluation proved insignificant, but was hampered by low subject number, and more importantly by lack of normative data and contamination of the control group. Conclusion: Further research is required to provide statistical validity for this clinically acceptable and highly evidenced hypothesis: hamstring strain can be associated with lumbo-pelvic dysfunction. © 2004 Elsevier Ltd. All rights reserved.","Biomechanical chain; Cybex norm dynamometer; Hamstring strain; Lumbo-pelvic rhythm; Manual assessment; Professional soccer players; Trunk flexion-extension","article; athlete; bone injury; clinical article; controlled study; correlation analysis; disease association; dynamometry; hamstring; hamstring strain; human; lumbo pelvic dysfunction; male; manipulative medicine; muscle injury; retrospective study; sport injury; statistical significance; symptom","Askling C., Tengvar M., Saartok T., Thortensson, Sports related hamstring strains - Two cases with different etiologies and injury sites, Scandinavian Journal of Medicine & Science in Sports, 10, pp. 304-307, (2000); Beimborn D., Morrissey M., A review of the literature related to trunk muscle performance, Spine, 13, 6, pp. 655-660, (1988); Brady S., Mayer T., Gatchel R., Physical progress and residual impairment quantification after functional restoration - Part 2: Isokinetic trunk strength, Spine, 19, 4, pp. 395-400, (1994); Byl, Sadowsky, Intersite reliability of repeated isokinetic measurements: Cybex back systems including trunk rotation, trunk extension-flexion, and liftask, Isokinetic and Exercise Science, 3, 3, pp. 139-147, (1993); Chaitow, How accurate are manual assessment methods?, Journal of Bodywork and Movement Therapies, 1, 3, (1997); Chek P., Scientific Back Training. Correspondence Course/Course Notes, 2-day Seminar, (1993); Comerford M., Mottram S., Functional stability re-training: Principles and strategies for managing mechanical dysfunction, Manual Therapy, 6, 1, pp. 3-14, (2001); Croisier J.-L., Forthomme F., Namurois M.-H., Vanderthommen M., Crielaard J.M., Hamstring muscle strain recurrence and strength performance disorders, The American Journal of Sports Medicine, 30, 2, pp. 199-203, (2002); Rationale for Standardised Rules and Protocols CYBEX NORM Testing and Rehabilitation System User's Guide, (1995); Delitto A., Rose S., Crandell C., Strube M., Reliability of isokinetic measurements of trunk muscle performance, Spine, 16, 7, pp. 800-803, (1991); DiGiovanna E., Somatic dysfunction - Introduction to osteopathic medicine, An Osteopathic Approach to Diagnosis and Treatment, (1991); Dvir Z., Differentiation of submaximal from maximal trunk extension effort - An isokinetic study using a new protocol, Spine, 22, 22, pp. 2672-2676, (1997); Hicks C., Research for Physiotherapists: Project Design and Analysis, pp. 223-224, (1999); Hutten, Hermens, Reliability of lumbar dynamometry measurements in low back pain with test-retest measurements on different days, European Spine Journal, 6, pp. 54-62, (1997); Jones J., Glossary of osteopathic terminology (Educational Council on Osteopathic Principle, 1995, Chairman: Jones), Foundations for Osteopathic Medicine, (1997); Kappler R., Somatic dysfunction palpation - Palpatory skills, Foundations of Osteopathic Medicine, pp. 475-476, (1997); Kappler R., Somatic dysfunction palpation - Palpatory skills, Foundations of Osteopathic Medicine 2nd Edition., pp. 475-476, (2002); Kuchera W., Jones J., Kappler R., Goodridge J., Musculoskeletal examination for somatic dysfunction, Foundations for Osteopathic Medicine, (1997); Kumar S., Dufresne R., Shoor T., Human trunk strength profile in flexion and extension, Spine, 20, 2, pp. 160-168, (1995); Laslett M., Pain provocation sacroiliac joint tests: Reliability and prevalence, Movement, Stability & Low Back Pain, pp. 287-295, (1997); Magee D.J., Grading Tenderness on Palpation in Orthopaedic Physical Assessment, 4th Edition, (2002); Mayer T., Tabor J., Bovasso E., Gatchel R., Physical progress and residual impairment quantification after functional restoration - Part 1: Lumbar mobility, Spine, 19, 4, pp. 389-394, (1994); McPartland J., Goodridge J., Counterstrain and traditional osteopathic examination of the cervical spine compared, Journal of Bodywork and Movement Therapies, 1, 3, pp. 173-178, (1997); Nannini L., Myers D., Glotzbach B., Poland P., The centennial olympic games and massage therapy: The first official team, Journal of Bodywork and Movement Therapies, 1, 3, pp. 130-133, (1997); Newton M., Waddel G., Trunk strength testing with iso-machines, Spine, 18, 7, pp. 801-811, (1993); O'Haire G., Inter & Intra Examiner agreement for the assessment of sacro-iliac landmarks, First International Conference on Advances in Osteopathic Research, (1999); Orchard J., Seward H., Epidemiology of injuries in the Australian football league, seasons 1997-2000, British Journal of Sports Medicine, 36, pp. 39-45, (2002); O'Sullivan P., Lumbar segmental 'instability' clinical presentation and specific stabilising exercise management, Manual Therapy, 5, 1, pp. 2-12, (2000); Pollard H., Quodling N., Management of hamstring injury: A review and case report, Sports Chiropractic & Rehabilitation, 13, 3, pp. 98-106, (1999); Reid, Hazard, Fenwick, Isokinetic trunk-strength deficits in people with and without low back pain: A comparative study with consideration of effort, Journal of Spinal Disorders, 4, 1, pp. 68-72, (1991); Sahrmann S., Diagnosis & Treatment of Movement Impairment Syndromes, (2000); Stone C., Holism, Science in the Art of Osteopathy - Principles and Practice, (1999); Tulloch S., The Readers Digest Oxford Complete Word Finder, (1993); Turl S., George K., Adverse neural tension: A factor in repetitive hamstring strain?, Journal of Orthopaedic & Sports Physical Therapy, 27, 1, pp. 16-21, (1998); Verral G.M., Slavotinek J.P., Barnes P.G., Fon G.T., Spriggins A.J., Clinical risk factors for hamstring muscle strain injury: A prospective study with correlation of injury by magnetic resonance imaging, British Journal of Sports Medicine, 35, pp. 435-440, (2001); Vincent-Smith, Gibbons, Inter-examiner and intra-examiner reliability of the standing flexion test, Manual Therapy, 4, 2, pp. 87-93, (1999); Wallden M., Lumbo-pelvic Associations with Hamstring Strain in Professional Footballers, (2000); Whiting Z., Hamstring Strain - Lower Extremity Injuries, Biomechanics of Musculoskeletal Injury. Human Kinetics, (1998)","M. Wallden; Brit. Coll. of Osteopathic Medicine, London, Sumpter Close, 120-122 Finchley Road, United Kingdom; email: matt-w-osteo@usa.net","","Churchill Livingstone","13608592","","JBOTF","","English","J. Bodywork Mov. Ther.","Article","Final","","Scopus","2-s2.0-14644393028" "Buśko K.; Górski M.; Nikolaidis P.T.; Mazur-Różycka J.; Łach P.; Staniak Z.; Gajewski J.","Buśko, Krzysztof (56067031300); Górski, Michał (57188931750); Nikolaidis, Pantelis Theodoros (57211101103); Mazur-Różycka, Joanna (56530752800); Łach, Patrycja (57188928174); Staniak, Zbigniew (56664382600); Gajewski, Jan (57195116713)","56067031300; 57188931750; 57211101103; 56530752800; 57188928174; 56664382600; 57195116713","Leg strength and power in Polish striker soccer players","2018","Acta of Bioengineering and Biomechanics","20","2","","109","116","7","12","10.5277/ABB-01066-2017-02","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85050072428&doi=10.5277%2fABB-01066-2017-02&partnerID=40&md5=cc0fe784d5945874d3e9846ad623f2f8","Department of Anatomy and Biomechanics, Kazimierz Wielki University, Bydgoszcz, Poland; Department of Biomechanics, Institute of Sport – National Research Institute, Warsaw, Poland; Department of Physical and Cultural Education, Hellenic Army Academy, Athens, Greece; Department of Ergonomics, Central Institute for Labour Protection – National Research Institute (CIOP – PIB), Warsaw, Poland; Department of Biometry, Józef Piłsudski University of Physical Education, Warsaw, Poland","Buśko K., Department of Anatomy and Biomechanics, Kazimierz Wielki University, Bydgoszcz, Poland; Górski M., Department of Biomechanics, Institute of Sport – National Research Institute, Warsaw, Poland; Nikolaidis P.T., Department of Physical and Cultural Education, Hellenic Army Academy, Athens, Greece; Mazur-Różycka J., Department of Ergonomics, Central Institute for Labour Protection – National Research Institute (CIOP – PIB), Warsaw, Poland; Łach P., Department of Ergonomics, Central Institute for Labour Protection – National Research Institute (CIOP – PIB), Warsaw, Poland; Staniak Z., Department of Biomechanics, Institute of Sport – National Research Institute, Warsaw, Poland; Gajewski J., Department of Biometry, Józef Piłsudski University of Physical Education, Warsaw, Poland","Purpose: The main goal of the present study was to examine muscle strength and power of dominant and non-dominant leg, knee extensors and flexors, and their correlations with jumping performances in soccer players. A secondary aim was to evaluate muscle sense. Methods: 31 male professional strikers (age 20.9 ± 2.3 years, body mass 75.1 ± 6.6 kg, body height 179.5 ± 4.7 cm) participated in the study. The power output of lower extremities and the height of rise of the body mass centre during vertical jumps were measured using a force plate. The maximum muscle torque of the flexors and extensors of the knee were measured under isometric conditions using a special isometric torquemeter. Force sense was measured in isometric conditions in two tests: (a) fifty percent of the maximal voluntary contraction was set as a value of target force and the participants were instructed to reproduce the target force, (b) the participants attempted to develop a torque reproducing a sine course within the range of 10 to 50% of MVC performed. Results: A direct relationship was observed between the peak muscle torque in knee extensors developed during isokinetic contraction at all velocities and power and height of three types of vertical jumps (p < 0.05). No correlation was observed between jumping performance and muscle torque under isometric condition. No differences were found in strength and jumping abilities as well as in force sense between dominant and non-dominant legs. Conclusions: This study offered a comprehensive and complete evaluation of leg muscle strength, sense and power, with the use of using force plate and isokinetic dynamometry. © 2018, Institute of Machine Design and Operation. All rights reserved.","Force sense; Height of jump; Isokinetic; Peak torque; Power; Striker soccer players","Analysis of Variance; Biomechanical Phenomena; Humans; Isometric Contraction; Leg; Male; Motor Activity; Poland; Soccer; Statistics, Nonparametric; Torque; Young Adult; analysis of variance; biomechanics; human; leg; male; motor activity; muscle isometric contraction; nonparametric test; physiology; Poland; soccer; torque; young adult","Andersson H.M., Raastad T., Nilsson J., Paulsen G., Garthe I., Kadi F., Neuromuscular fatigue and recovery in elite female soccer: Effects of active recovery, Med. Sci. Sports Exerc., 40, 2, pp. 372-380, (2008); Arnason A., Sigurdsson S.B., Gudmundsson A., Holme I., Engebretsen L., Bahr R., Physical fitness, injuries, and team performance in soccer, Med. Sci. Sports Exerc., 36, 2, pp. 278-285, (2004); Brito J., Vasconcellos F., Oliveira J., Krustrup P., Rebelo A., Short-term performance effects of three different low-volume strength-training programmes in college male soccer players, J. Hum. Kine., 40, 1, pp. 121-128, (2014); Chuman K., Hoshikawa Y., Iida T., Nishijima T., Quasi-simplex Structure among Physical Ability Factors with Relation to Sprint Speed in Pubescent Male Soccer Players, Football Sci, 10, pp. 57-64, (2013); Cometti G., Maffiuletti N.A., Pousson M., Chatard J.C., Maffulli N., Isokinetic strength and anaerobic power of elite, subelite and amateur French soccer players, Int. J. Sports Med., 22, 1, pp. 45-51, (2001); Fousekis K., Tsepis E., Vagenas G., Lower limb strength in professional soccer players: Profile, asymmetry, and training age, J. Sports Sci. Med., 9, 3, pp. 364-373, (2010); Fried T., Lloyd G.J., An overview of common soccer ınjuries, management and prevention, Sports Med, 14, pp. 269-275, (1992); Gajewski J., Michalski R., Busko K., Mazur-Rozycka J., Staniak Z., Countermovement depth – a variable which clarifies the relationship between the maximum power output and height of a vertical jump, Acta Bioeng. Biomech., 20, 1, (2018); Hewett T.E., Myer G.D., Zazulak B.T., Hamstrings to quadriceps peak torque ratios diverge between sexes with increasing isokinetic angular velocity, J. Sci. Med. Sport, 11, 5, pp. 452-459, (2008); Iwanska D., Karczewska M., Madej A., Urbanik C., Symmetry of proprioceptive sense in female soccer players, Acta Bioeng. Biomech., 17, 2, pp. 155-163, (2015); Kim D., Hong J., Hamstring to quadriceps strength ratio and noncontact leg injuries: A prospective study during one season, Isokinetics and Exercise Science, 19, 1, pp. 1-6, (2011); Lehance C., Binet J., Bury T., Croisier J.L., Muscular strength, functional performances and injury risk in professional and junior elite soccer players, Scand. J. Med. Sci. Sports, 19, 2, pp. 243-251, (2009); Menzel H.J., Chagas M.H., Szmuchrowski L.A., Araujo S.R., DE ANDRADE A.G., DE JESUS-MORALEIDA F.R., (2013). Analysis of lower limb asymmetries by isokinetic and vertical jump tests in soccer players, J. Strength Cond. Res., 27, 5, pp. 1370-1377, (2013); Muckle D.S., Injuries in professional footballers, Br. J. Sports Med., 15, 1, pp. 77-79, (1981); Park S., Toole T., Lee S., Functional roles of the proprioceptive system in the control of goal-directed movement, Percept. Mot. Skills, 88, 2, pp. 631-647, (1999); Pietraszewski B., Siemienski A., Bober T., Struzik A., Rutkowska-Kucharska A., Nosal J., Rokita A., Lower extremity power in female soccer athletes: A pre-season and in-season comparison, Acta Bioeng. Biomech., 17, 3, pp. 129-135, (2015); Rahnama N., Lees A., Bambaecichi E., A comparison of muscle strength and flexibility between the preferred and non-preferred leg in English soccer players, Ergonomics, 48, 11-14, pp. 1568-1575, (2005); Rampinini E., Coutts A.J., Castagna C., Sassi R., Impellizzeri F.M., Variation in top level soccer match performance, Int. J. Sports Med., 28, 12, pp. 1018-1024, (2007); Rebelo A., Brito J., Maia J., Coelho-E-Silva M.J., Figueiredo A.J., Bangsbo J., Malina R.M., Seabra A., Anthropometric characteristics, physical fitness and techni-cal performance of under-19 soccer players by competitive level and field position, Int. J. Sports Med., 34, 4, pp. 312-317, (2013); Rynkiewicz T., Niewolna N., The level of maximum strength and strength accuracy in chosen motor tasks in men, Antropomotoryka, 54, pp. 27-34, (2011); Silva J.R., Magalhaes J.F., Ascensao A.A., Oliveira E.M., Seabra A.F., Rebelo A.N., Individual match playing time during the season affects fitness-related parameters of male professional soccer players, J. Strength Cond. Res., 25, 10, pp. 2729-2739, (2011); Small K., McNaughton L., Greig M., Lovell R., The effects of multidirectional soccer-specific fatigue on markers of hamstring injury risk, J. Sci. Med. Sport, 13, 1, pp. 120-125, (2010); Stillman B.C., Making sense of proprioception, The Meaning of Proprioception, Kinaesthesia and Related Terms, Physiother, 88, 11, pp. 667-676, (2002); Struzik A., Pietraszewski B., Bober T., Relationships between the H/Q ratio and variables describing CMJ and DJ jumps, Mitteilungen Klosterneuburg, 66, 2, pp. 123-133, (2016); Struzik A., Pietraszewski B., Bober T., Siemienski A., Ratios of torques of antagonist muscle groups in female soccer players, Acta Bioeng. Biomech., 20, 1, (2018); Szpala A., Rutkowska-Kucharska A., Stawiany M., Symmetry of electromechanical delay, peak torque and rate of force development in knee flexors and extensors in female and male subjects, Acta Bioeng. Biomech., 17, 1, pp. 61-68, (2015); Szulc A., Busko K., Sandurska E., Kolodziejczyk M., The biomechanical characteristics of elite deaf and hearing female soccer players: Comparative analysis, Acta Bioeng. Biomech., 19, 4, pp. 127-133, (2017); Thompson B.J., Ryan E.D., Sobolewski E.J., Smith D.B., Akehi K., Conchola E.C., Buckminster T., Relationships between rapid isometric torque characteristics and vertical jump performance in Division I collegiate American football players: Influence of body mass normalization, J. Strength Cond. Res., 27, 10, pp. 2737-2742, (2013)","K. Buśko; Department of Anatomy and Biomechanics, Kazimierz Wielki University, Bydgoszcz, ul. Sportowa 2, 85-091, Poland; email: krzysztof.busko@ukw.edu.pl","","Institute of Machine Design and Operation","1509409X","","","30220718","English","Acta Bioeng. Biomech.","Article","Final","","Scopus","2-s2.0-85050072428" "al-Kashmiri A.; Delaney J.S.","al-Kashmiri, Ammar (15844749900); Delaney, J Scott (7103303508)","15844749900; 7103303508","Head and neck injuries in football (soccer)","2006","Trauma","8","3","","189","195","6","14","10.1177/1460408606071144","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33846993331&doi=10.1177%2f1460408606071144&partnerID=40&md5=ba26bc713e758c744b6f56d4f1f912d0","Accident and Emergency Department, Sultan Qaboos University Hospital, Department of Emergency Medicine, McGill University Health Centre, Quebec, Canada; Accident and Emergency Department, Sultan Qaboos University Hospital, Department of Emergency Medicine, McGill University Health Centre, McGill Sport Medicine Clinic, Quebec, Canada","al-Kashmiri A., Accident and Emergency Department, Sultan Qaboos University Hospital, Department of Emergency Medicine, McGill University Health Centre, Quebec, Canada; Delaney J.S., Accident and Emergency Department, Sultan Qaboos University Hospital, Department of Emergency Medicine, McGill University Health Centre, McGill Sport Medicine Clinic, Quebec, Canada","The incidence for concussions in football (soccer) is equivalent to other contact sports such as American football and ice hockey. The risk of concussion is increased in goalkeepers, females and perhaps young players. Head to head contact between athletes is the most common mechanism for concussion, while heading does not appear to be a frequent cause. Research is providing evidence that neck muscle development and protective headgear may play a role in the prevention of concussions. The presence and pathophysiology of a chronic encephalopathy secondary to a cumulative subconcussive blows obtained in football is still controversial. Neck injuries are not as common as head injuries and are not frequently reported in the literature. The biomechanics of neck injuries are different between children and adults which may account for the different types of injuries in these populations. Spinal cord injuries are rarely seen in football and are usually associated with major fractures/dislocations. © 2006, SAGE Publications. All rights reserved.","concussion; football; head; injury; neck; soccer","article; athlete; biomechanics; brain disease; concussion; contact sport; dislocation; football; fracture; head and neck injury; head injury; human; incidence; neck injury; neck muscle; pathophysiology; protective clothing; spinal cord injury","Barnes B.C., Cooper L., Kirkendall D.T., et a.l., Concussion history in elite male and female soccer players, Am J Sports Med, 26, pp. 433-438, (1998); Biros M.H., Head trauma, Emergency medicine: concepts and clinical practice, pp. 416-447, (1998); Boden B.P., Kirkendall D.T., Garrett WE J.r., Concussion incidence in elite college soccer players, Am J Sports Med, 26, pp. 238-241, (1998); Cantu R.C., Athletic head injuries, Clin Sports Med, 16, pp. 531-542, (1997); Cantu R.C., Diagnosis and management of concussion, American College of Sports Medicine's essentials of sports medicine, pp. 345-347, (1997); Delaney J.S., Head injuries presenting to emergency departments in the United States from 1990 to 1999 for ice hockey, soccer and football; Delaney J.S., Drummond R., Has the time come for protective headgear for soccer?, Clin J Sport Med, 9, pp. 121-123, (1999); Delaney J.S., Al-Kashmiri A., Neck injuries presenting to emergency departments in the United States from 1990 to 1999 for ice hockey, soccer, and American football, Br J Sports Med, 39, pp. e21-e21, (2005); Delaney J.S., Frankovich R., Head injuries and concussions in soccer, Clin J Sport Med, 15, pp. 216-219, (2005); Delaney J.S., Lacroix V.J., Leclerc S., et a.l., Concussions during the 1997 Canadian Football League season, Clin J Sport Med, 10, pp. 9-14, (2000); Delaney J.S., Lacroix V.J., Gagne C., et a.l., Concussions among university football and soccer players: a pilot study, Clin J Sport Med, 11, pp. 234-240, (2001); Delaney J.S., Lacroix V.J., Leclerc S., et a.l., Concussions among university football and soccer players, Clin J Sport Med, 12, pp. 331-338, (2002); Delaney J.S., Puni V., Rouah F., Mechanisms of injury for concussions in university football, ice hockey, and soccer -a pilot study, Clin J Sport Med, 16, pp. 162-165, (2006); Eleraky M.A., Theodore N., Adams M., et a.l., Pediatric cervical spine injuries: report of 102 cases and review of the literature, J Neurosurg, 92, pp. 12-17, (2000); Fesmire F.M., Luten R.C., The pediatric cervical spine: developmental anatomy and clinical aspects, J Emerg Med, 7, pp. 133-142, (1989); Fuller C.W., Junge A., Dvorak J., A six year prospective study of the incidence and causes of head and neck injuries in international football, Br J Sports Med, 39, 1, pp. i3-i9, (2005); Gerberich S.G., Priest J.D., Boen J.R., et a.l., Concussion incidences and severity in secondary school varsity football players, Am J Public Health, 73, pp. 1370-1375, (1983); Green G.A., Jordan S.E., Are brain injuries a significant problem in soccer?, Clin Sports Med, 17, pp. 795-809, (1998); Grindel S.H., Lovell M.R., Collins M.W., The assessment of sport-related concussion: the evidence behind neuropsychological testing and management, Clin J Sport Med, 11, pp. 134-143, (2001); Jordan S.E., Green G.A., Galanty H.L., et a.l., Acute and chronic brain injury in United States National Team soccer players, Am J Sports Med, 24, pp. 205-210, (1996); Kirkendall D.T., Jordan S.E., Garrett W.E., Heading and head injuries in soccer, Sports Med, 31, pp. 369-386, (2001); Kokoska E.R., Keller M.S., Rallo M.C., et a.l., Characteristics of pediatric cervical spine injuries, J Pediatr Surg, 36, pp. 100-105, (2001); Leclerc S., Lassonde M., Delaney J.S., et a.l., Recommendations for grading of concussion in athletes, Sports Med, 31, pp. 629-636, (2001); Lindsay K.W., McLatchie G., Jennett B., Serious head injury in sport, Br Med J, 281, pp. 789-791, (1980); Marx R.G., Delaney J.S., Sideline orthopedic emergencies in the young athlete, Pediatr Ann, 31, pp. 60-70, (2002); Matser J.T., Kessels A.G., Jordan B.D., et a.l., Chronic traumatic brain injury in professional soccer players, Neurology, 51, pp. 791-796, (1998); Matser E.J., Kessels A.G., Lezak M.D., et a.l., Neuropsychological impairment in amateur soccer players, JAMA, 282, pp. 971-973, (1999); McCrory P., Johnston K., Meeuwisse W., et a.l., Summary and agreement statement of the 2nd International Conference on Concussion in Sport, Prague 2004, Clin J Sport Med, 15, pp. 48-55, (2005); McGrory B.J., Klassen R.A., Chao E.Y., et a.l., Acute fractures and dislocations of the cervical spine in children and adolescents, J Bone Joint Surg Am, 75, pp. 988-995, (1993); Naunheim R.S., Ryden A., Standeven J., et a.l., Does soccer headgear attenuate the impact when heading a soccer ball?, Acad Emerg Med, 10, pp. 85-90, (2003); NIH Consensus Development Panel, Rehabilitation of Persons With Traumatic Brain Injury, Consensus conference. 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An evaluation by cerebral computed tomography, Neuroradiology, 31, pp. 44-48, (1989); Torg J.S., Epidemiology, pathomechanics, and prevention of athletic injuries to the cervical spine, Med Sci Sports Exerc, 17, pp. 295-303, (1985); Tucker A.M., Common soccer injuries. Diagnosis, treatment and rehabilitation, Sports Med, 23, pp. 21-32, (1997); Tysvaer A.T., Head and neck injuries in soccer. Impact of minor trauma, Sports Med, 14, pp. 200-213, (1992); Tysvaer A., Storli O., Association football injuries to the brain. A preliminary report, Br J Sports Med, 15, pp. 163-166, (1981); Tysvaer A.T., Storli O.V., Soccer injuries to the brain. A neurologic and electroencephalographic study of active football players, Am J Sports Med, 17, pp. 573-578, (1989); Tysvaer A.T., Lochen E.A., Soccer injuries to the brain. A neuropsychologic study of former soccer players, Am J Sports Med, 19, pp. 56-60, (1991); Withnall C., Shewchenko N., Wonnacott M., et a.l., Effectiveness of headgear in football, Br J Sports Med, 39, 1, pp. i40-i48, (2005); Yarnell P.R., Lynch S., The ‘ding’: amnestic states in football trauma, Neurology, 23, pp. 196-197, (1973)","","","","14604086","","","","English","Trauma","Article","Final","","Scopus","2-s2.0-33846993331" "Boden B.P.","Boden, B.P. (7004406488)","7004406488","Leg injuries and shin guards","1998","Clinics in Sports Medicine","17","4","","769","777","8","15","10.1016/S0278-5919(05)70117-4","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0031667868&doi=10.1016%2fS0278-5919%2805%2970117-4&partnerID=40&md5=97f6c580ba30bd42298e4910dcf01b3d","Silver Spring, MD 20902, 2101 Medical Park Dr. 305, United States","Boden B.P., Silver Spring, MD 20902, 2101 Medical Park Dr. 305, United States","Soccer players have a high risk of soft-tissue injuries to their legs. Fractures of the tibia and fibula represent a serious potential injury; despite this, the incidence of these fractures in soccer players is unknown. Shin guards have become the only protective devices that are required by international and collegiate soccer associations. Nonetheless, the protective ability of shin guards has only been studied to a limited extent. Shin guards are assumed to be most effective at reducing leg abrasions and contusions. The role of shin guards in protecting against fractures has yet to be determined. Further analysis of the clinical effectiveness and biomechanical properties of shin guards is necessary to reduce the rate of leg fractures.","","abrasion; athlete; biomechanics; contusion; fibula; human; incidence; leg injury; protective equipment; review; soft tissue injury; tibia fracture","Bir C.A., Cassatta S.J., Janda D.H., An analysis and comparison of soccer shin guards, Clin J Sport Med, 5, pp. 95-99, (1995); Engstrom B., Johansson C., Tornkvist H., Soccer injuries among elite female players, Am J Sports Med, 19, pp. 372-375, (1991); Gainor B.J., Piotrowski G., Puhl J.J., Et al., The kick: Biomechanics and collision injury, Am J Sports Med, 6, pp. 185-193, (1978); Hoff G.L., Martin T.A., Outdoor and indoor soccer: Injuries among youth players, Am J Sports Med, 14, pp. 231-233, (1986); Lohnes J.H., Garrett W.E., Monto R.R., Soccer, pp. 603-624, (1994); McCarroll J.R., Meaney C., Sieber J.M., Profile of youth soccer injuries, Physician Sportsmed, 12, 2, pp. 113-117, (1984); (1996); Nielsen A.B., Yde J., Epidemiology and traumatology of injuries in soccer, Am J Sports Med, 17, pp. 803-807, (1989); Putukian M., Knowles W.K., Swere S., Et al., Injuries in indoor soccer: The Lake Placid Dawn to Dark Soccer Tournament, Am J Sports Med, 14, pp. 317-322, (1996); van Laack W., Experimentelle untersuchungen uber die wirksamkeit verschiedener schienbeinschoner im fussballsport, Z Orthop, 123, pp. 951-956, (1985)","","","W.B. Saunders","02785919","","CSMEE","9922900","English","Clin. Sports Med.","Article","Final","","Scopus","2-s2.0-0031667868" "Li Y.; Singman E.; McCulley T.; Wu C.; Daphalapurkar N.","Li, Yang (57194173726); Singman, Eric (7801406502); McCulley, Timothy (6701489301); Wu, Chengwei (8964576200); Daphalapurkar, Nitin (14026456400)","57194173726; 7801406502; 6701489301; 8964576200; 14026456400","The Biomechanics of Indirect Traumatic Optic Neuropathy Using a Computational Head Model With a Biofidelic Orbit","2020","Frontiers in Neurology","11","","346","","","","16","10.3389/fneur.2020.00346","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85084541758&doi=10.3389%2ffneur.2020.00346&partnerID=40&md5=5644dee7a7b0384b9059af13882d4c0e","State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian, China; Hopkins Extreme Materials Institute, Johns Hopkins University, Baltimore, MD, United States; Wilmer Eye Institute, Johns Hopkins Medicine, Baltimore, MD, United States; Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, United States","Li Y., State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian, China, Hopkins Extreme Materials Institute, Johns Hopkins University, Baltimore, MD, United States; Singman E., Wilmer Eye Institute, Johns Hopkins Medicine, Baltimore, MD, United States; McCulley T., Wilmer Eye Institute, Johns Hopkins Medicine, Baltimore, MD, United States; Wu C., State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian, China; Daphalapurkar N., Hopkins Extreme Materials Institute, Johns Hopkins University, Baltimore, MD, United States, Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, United States","Indirect traumatic optic neuropathy (ITON) is an injury to the optic nerve due to head trauma and usually results in partial or complete loss of vision. In order to advance a mechanistic understanding of the injury to the optic nerve, we developed a head model with a biofidelic orbit. Head impacts were simulated under controlled conditions of impactor velocity. The locations of impact were varied to include frontal, lateral, and posterior parts of the head. Impact studies were conducted using two types of impactors that differed in their rigidity relative to the skull. The simulated results from both the impactors suggest that forehead impacts are those to which the optic nerve is most vulnerable. The mode and location of optic nerve injury is significantly different between the impacting conditions. Simulated results using a relatively rigid impactor (metal cylinder) suggest optic nerve injury initiates at the location of the intracranial end of the optic canal and spreads to the regions of the optic nerve in the vicinity of the optic canal. In this case, the deformation of the skull at the optic canal, resulting in deformation of the optic nerve, was the primary mode of injury. On the other hand, simulated results using a relatively compliant impactor (soccer ball) suggest that primary mode of injury comes from the brain tugging upon the optic nerve (from where it is affixed to the intracranial end of the optic canal) during coup countercoup motion of the brain. This study represents the first published effort to employ a biofidelic simulation of the full length of the optic nerve in which the orbit is integrated within the whole head. © Copyright © 2020 Li, Singman, McCulley, Wu and Daphalapurkar.","biomechanics; brain injury; concussion; finite element methods; head trauma; optic nerve; optic neuropathy; vision loss","Article; biomechanics; computer model; controlled study; extraocular muscle; finite element analysis; head movement; indirect traumatic optic neuropathy; optic chiasm; optic nerve; optic nerve disease; optic nerve injury; orbit; orbital fat; oscillation; skull malformation","Kline L.B., Morawetz R.B., Swaid S.N., Indirect injury of the optic nerve, Neurosurgery, 14, pp. 756-764, (1984); Levin L.A., Beck R.W., Joseph M.P., Seiff S., Kraker R., The treatment of traumatic optic neuropathy: the International Optic Nerve Trauma Study, Ophthalmology, 106, pp. 1268-1277, (1999); Singman E.L., Daphalapurkar N., White H., Nguyen T.D., Panghat L., Chang J., Et al., Indirect traumatic optic neuropathy, Mil Med Res, 3, (2016); 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Ganpule S., Daphalapurkar N.P., Ramesh K.T., Knutsen A.K., Pham D.L., Bayly P.V., Et al., A Three-dimensional computational human head model that captures live human brain dynamics, J Neurotrauma, 34, pp. 2154-2166, (2017); Robbins D.H., Wood J.L., Determination of mechanical properties of the bones of the skull, Exp Mech, 9, pp. 236-240, (1969); Miller K., Chinzei K., Mechanical properties of brain tissue in tension, J Biomech, 35, pp. 483-490, (2002); Larrabee W.F., Sutton D., A finite element model of skin deformation. II An experimental model of skin deformation, Laryngoscope, 96, pp. 406-412, (2009); Goldsmith W., Biomechanics of head injury, biomechanics, its foundations and objectives, Crashworthiness of Transportation Systems: Structural Impact and Occupant Protection, pp. 585-608, (1972); Sigal I.A., Flanagan J.G., Tertinegg I., Ethier C.R., Finite element modeling of optic nerve head biomechanics, Invest Ophthalmol Vis Sci, 45, pp. 4378-4387, (2004); Bereiter-Hahn J., Probing biological cells and tissues with acoustic microscopy, Advances in Acoustic Microscopy. Advances in Acoustic Microscopy, (1995); Bisplinghoff J.A., Mcnally C., Manoogian S.J., Duma S.M., Dynamic material properties of the human sclera, J Biomech, 42, pp. 1493-1497, (2009); Eby S.F., Song P., Chen S., Chen Q., Greenleaf J.F., An K.N., Validation of shear wave elastography in skeletal muscle, J Biomech, 46, pp. 2381-2387, (2013); Schoemaker I., Hoefnagel P.P., Mastenbroek T.J., Kolff C.F., Schutte S., van der Helm F.C., Et al., Elasticity, viscosity, and deformation of orbital fat, Invest Ophthalmol Vis Sci, 47, pp. 4819-4826, (2006); Nagasao T., Miyamoto J., Nagasao M., Ogata H., Kaneko T., Tamaki T., Et al., The effect of striking angle on the buckling mechanism in blowout fracture, Plast Reconstr Surg, 117, pp. 2373-2380, (2006); Waterhouse N., Lyne J., Urdang M., Garey L., An investigation into the mechanism of orbital blowout fractures, Br J Plast Surg, 52, pp. 607-612, (1999); Karimi A., Razaghi R., Navidbakhsh M., Sera T., Kudo S., Measurement of the mechanical properties of soccer balls using digital image correlation method, Sport Sci Health, 12, pp. 69-76, (2015); Kleiven S., Predictors for traumatic brain injuries evaluated through accident reconstructions, Stapp Car Crash J, 51, (2007); Larrabee W.F., A finite element model of skin deformation. I Biomechanics of skin and soft tissue: a review, Laryngoscope, 96, pp. 399-405, (2010); Bigler E.D., Anterior and middle cranial fossa in traumatic brain injury: relevant neuroanatomy and neuropathology in the study of neuropsychological outcome, Neuropsychology, 21, pp. 515-531, (2007); Asai T., Seo K., Kobayashi O., Sakashita R., Fundamental aerodynamics of the soccer ball, Sports Eng, 10, pp. 101-109, (2007); Bain A.C., Meaney D.F., Tissue-level thresholds for axonal damage in an experimental model of central nervous system white matter injury, J Biomech Eng, 122, pp. 615-622, (2000); Santos-Bueso E., Genol-Saavedra I., Calvo-Gonzalez C., Huelga-Zapico E., Diaz-Valle D., Benitez-Del-Castillo J.M., Amaurosis secondary to frontal traumatism amaurosis secundaria a traumatismo frontal, Arch Soc Española Oftalmol, 81, pp. 115-118, (2006); Collins M.W., Grindel S.H., Lovell M.R., Dede D.E., Moser D.J., Phalin B.R., Et al., Relationship between concussion and neuropsychological performance in college football players, JAMA, 282, pp. 964-970, (1999); Green G.A., Jordan S.E., ARE BRAIN INJURIES A SIGNIFICANT PROBLEM IN SOCCER?, Clin Sports Med, 17, (1998); Jeffery G., Evans A., Albon J., Duance V., Neal J., Dawidek G., The human optic nerve: fascicular organisation and connective tissue types along the extra-fascicular matrix, Anat Embryol, 191, pp. 491-502, (1995); Shin A., Yoo L., Park J., Demer J.L., Finite element biomechanics of optic nerve sheath traction in adduction, J Biomech Eng, 139, pp. 1010101-10, (2017); Dikici A.S., Mihmanli I., Kilic F., Ozkok A., Kuyumcu G., Sultan P., Et al., In vivo evaluation of the biomechanical properties of optic nerve and peripapillary structures by ultrasonic shear wave elastography in glaucoma, Iran J Radiol, 13, (2016); Hodgson N., Schaeffer M., Panghat L., Fu R., Ling Y.T.T., Konopacki E., Et al., Traumatic optic neuropathy biomechanics: high speed camera assessment in an animal model; Shaeffer M., Ling Y.T.T., Panghat L., Mukherjee D., Khalafallah A., Ramesh K.T., Et al., Results of an experimental model of traumatic optic neuropathy, (2020); Briet C., Braun K., Lefranc M., Toussaint P., Bony H., Should we assess pituitary function in children after a mild traumatic brain injury? A prospective study, Front Endocrinol, 10, (2019); Emelifeonwu J.A., Flower H., Loan J., McGivern K., Andrews P.J., Prevalence of Anterior pituitary dysfunction 12 months or more following traumatic brain injury in adults–a systematic review and meta-analysis, J Neurotrauma, 37, pp. 217-226, (2019); Pavlovic D., Pekic S., Stojanovic M., Popovic V., Traumatic brain injury: neuropathological, neurocognitive and neurobehavioral sequelae, Pituitary, 22, pp. 270-282, (2019)","N. Daphalapurkar; Hopkins Extreme Materials Institute, Johns Hopkins University, Baltimore, United States; email: daphala@gmail.com","","Frontiers Media S.A.","16642295","","","","English","Front. Neurol.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85084541758" "Di Paolo S.; Zaffagnini S.; Tosarelli F.; Aggio F.; Bragonzoni L.; Grassi A.; Della Villa F.","Di Paolo, Stefano (57209464265); Zaffagnini, Stefano (7003438311); Tosarelli, Filippo (57217386930); Aggio, Fabrizio (57244546200); Bragonzoni, Laura (7801511871); Grassi, Alberto (57205264407); Della Villa, Francesco (55780654000)","57209464265; 7003438311; 57217386930; 57244546200; 7801511871; 57205264407; 55780654000","A 2D qualitative movement assessment of a deceleration task detects football players with high knee joint loading","2021","Knee Surgery, Sports Traumatology, Arthroscopy","29","12","","4032","4040","8","11","10.1007/s00167-021-06709-2","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85114154267&doi=10.1007%2fs00167-021-06709-2&partnerID=40&md5=208e06195d6f628065c09387d7f7233b","Department for Life Quality Studies QUVI, University of Bologna, Via Giulio Cesare Pupilli, 1, Bologna, 40136, BO, Italy; 2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy; Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy; Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy","Di Paolo S., Department for Life Quality Studies QUVI, University of Bologna, Via Giulio Cesare Pupilli, 1, Bologna, 40136, BO, Italy; Zaffagnini S., 2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy; Tosarelli F., Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy; Aggio F., Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy; Bragonzoni L., Department for Life Quality Studies QUVI, University of Bologna, Via Giulio Cesare Pupilli, 1, Bologna, 40136, BO, Italy; Grassi A., 2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy; Della Villa F., Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy","Purpose: The deceleration (pressing) is a common situational pattern leading to anterior cruciate ligament (ACL) injury in football. Although mainly assessed for performance purposes, a stronger focus on movement quality might support the screening of at-risk athletes. The aim of the present study was to describe a 2D scoring system for the assessment of the deceleration task and to associate it with the knee joint loading (knee abduction moment) evaluated through the gold standard 3D motion capture. The hypothesis was that lower 2D scores would be associated with higher knee joint loading. Methods: Thirty-four competitive football (soccer) players (age 22.8 ± 4.1, 16 females) performed a series of deceleration tasks. 3D motion analysis was recorded using ten stereophotogrammetric cameras, a force platform, and three high-speed cameras. The 2D qualitative assessment was performed via a scoring system based on the video analysis of frontal and lateral planes joint kinematics for five scoring criteria. The intra- and inter-rater reliabilities were calculated for each 2D scoring criteria. The peak knee abduction moment was extracted and grouped according to the results of the 2D evaluation. Results: An ICC > 0.94 was found for all the 2D scoring criteria, both for intra-rater and inter-rater reliability. The players with low 2D frontal plane scores and low total scores (0–4) showed significantly higher peak knee abduction moment values (p < 0.001). A significant negative rank correlation was found between the total score and the peak knee abduction moment (ρ = − 0.25, p < 0.001). Conclusions: The qualitative 2D scoring system described successfully discerned between athletes with high and low knee joint loading during a deceleration task. The application of this qualitative movement assessment based on a detailed and accurate scoring system is suitable to identify players and patients with high knee joint loading (high knee abduction moments) and target additional training in the scenario of the primary and secondary ACL injury risk reduction. Level of evidence: Level IV. © 2021, The Author(s).","2D video analysis; ACL; ACL injury prevention; Deceleration; Return to sport; Soccer","Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Deceleration; Female; Football; Humans; Knee Joint; Movement; Reproducibility of Results; Soccer; anterior cruciate ligament injury; biomechanics; deceleration; female; football; human; knee; movement (physiology); reproducibility; soccer","Allen M.M., Pareek A., Krych A.J., Hewett T.E., Levy B.A., Stuart M.J., Dahm D.L., Are female soccer players at an increased risk of second anterior cruciate ligament injury compared with their athletic peers?, Am J Sports Med, 44, pp. 2492-2498, (2016); Anand M., Diekfuss J.A., Slutsky-Ganesh A.B., Grooms D.R., Bonnette S., Barber Foss K.D., DiCesare C.A., Hunnicutt J.L., Myer G.D., Integrated 3D motion analysis with functional magnetic resonance neuroimaging to identify neural correlates of lower extremity movement, J Neurosci Methods, (2021); Ardern C.L., Ekas G.R., Grindem H., Moksnes H., Anderson A., Chotel F., Cohen M., Forssblad M., Ganley T.J., Feller J.A., Karlsson J., Kocher M.S., LaPrade R.F., McNamee M., Mandelbaum B., Micheli L., Mohtadi N.G.H., Reider B., Roe J.P., Seil R., Siebold R., Silvers-Granelli H.J., Soligard T., Witvrouw E., Engebretsen L., Prevention, diagnosis and management of paediatric ACL injuries, Br J Sports Med, 52, pp. 1297-1298, (2018); Bahr R., Why screening tests to predict injury do not work-and probably never will: a critical review, Br J Sports Med, 50, pp. 776-780, (2016); Bates N.A., Myer G.D., Hale R.F., Schilaty N.D., Hewett T.E., Prospective frontal plane angles used to predict ACL strain and identify those at high risk for sports-related ACL injury, Orthop J Sports Med, 8, (2020); Brophy R.H., Stepan J.G., Silvers H.J., Mandelbaum B.R., Defending puts the anterior cruciate ligament at risk during soccer: a gender-based analysis, Sports Health, 7, pp. 244-249, (2015); Buckthorpe M., Optimising the late-stage rehabilitation and return-to-sport training and testing process after ACL reconstruction, Sports Med, 49, pp. 1043-1058, (2019); Buckthorpe M., Della Villa F., Della Villa S., Roi G.S., On-field rehabilitation part 1: 4 pillars of high-quality on-field rehabilitation are restoring movement quality, physical conditioning, restoring sport-specific skills, and progressively developing chronic training load, J Orthop Sports Phys Ther, 49, pp. 565-569, (2019); Criss C.R., Melton M.S., Ulloa S.A., Simon J.E., Clark B.C., France C.R., Grooms D.R., Rupture, reconstruction, and rehabilitation: a multi-disciplinary review of mechanisms for central nervous system adaptations following anterior cruciate ligament injury, Knee, 30, pp. 78-89, (2021); Criss C.R., Onate J.A., Grooms D.R., Neural activity for hip-knee control in those with anterior cruciate ligament reconstruction: a task-based functional connectivity analysis, Neurosci Lett, (2020); Della Villa F., Buckthorpe M., Grassi A., Nabiuzzi A., Tosarelli F., Zaffagnini S., Della Villa S., Systematic video analysis of ACL injuries in professional male football (soccer): injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, Br J Sports Med, (2020); Della Villa F., Di Paolo S., Santagati D., Della Croce E., Lopomo N.F., Grassi A., Zaffagnini S., A 2D video-analysis scoring system of 90° change of direction technique identifies football players with high knee abduction moment, Knee Surg Sports Traumatol Arthrosc, (2021); Della Villa F., Hagglund M., Della Villa S., Ekstrand J., Walden M., High rate of second ACL injury following ACL reconstruction in male professional footballers: an updated longitudinal analysis from 118 players in the UEFA Elite Club Injury Study, Br J Sports Med, (2021); Di Paolo S., Lopomo N.F., Della Villa F., Paolini G., Figari G., Bragonzoni L., Grassi A., Zaffagnini S., Rehabilitation and return to sport assessment after anterior cruciate ligament injury: quantifying joint kinematics during complex high-speed tasks through wearable sensors, Sensors, 21, (2021); Dix C., Arundale A., Silvers-Granelli H., Marmon A., Zarzycki R., Snyder-Mackler L., biomechanical measures during two sport-specific tasks differentiate between soccer players who go on to anterior cruciate ligament injury and those who do not: a prospective cohort analysis, Int J Sports Phys Ther, 15, pp. 928-935, (2020); Dos'Santos T., McBurnie A., Donelon T., Thomas C., Comfort P., Jones P.A., A qualitative screening tool to identify athletes with “high-risk” movement mechanics during cutting: the cutting movement assessment score (CMAS), Phys Ther Sport, 38, pp. 152-161, (2019); Dos'Santos T., Thomas C., McBurnie A., Comfort P., Jones P.A., Biomechanical determinants of performance and injury risk during cutting: a performance-injury conflict?, Sports Med, (2021); Grassi A., Smiley S.P., Roberti di Sarsina T., Signorelli C., Marcheggiani Muccioli G.M., Bondi A., Romagnoli M., Agostini A., Zaffagnini S., Mechanisms and situations of anterior cruciate ligament injuries in professional male soccer players: a YouTube-based video analysis, Eur J Orthop Surg Traumatol, 27, pp. 967-981, (2017); Hewett T.E., Bates N.A., Preventive biomechanics: a paradigm shift with a translational approach to injury prevention, Am J Sports Med, 45, pp. 2654-2664, (2017); Hewett T.E., Ford K.R., Xu Y.Y., Khoury J., Myer G.D., Effectiveness of neuromuscular training based on the neuromuscular risk profile, Am J Sports Med, 45, pp. 2142-2147, (2017); Koo T.K., Li M.Y., A guideline of selecting and reporting intraclass correlation coefficients for reliability research, J Chiropr Med, 15, pp. 155-163, (2016); Lucarno S., Zago M., Buckthorpe M., Grassi A., Tosarelli F., Smith R., Della Villa F., Systematic video analysis of anterior cruciate ligament injuries in professional female soccer players, Am J Sports Med, (2021); Padua D.A., DiStefano L.J., Beutler A.I., de la Motte S.J., DiStefano M.J., Marshall S.W., The landing error scoring system as a screening tool for an anterior cruciate ligament injury-prevention program in elite-youth soccer athletes, J Athl Train, 50, pp. 589-595, (2015); Paterno M.V., Kiefer A.W., Bonnette S., Riley M.A., Schmitt L.C., Ford K.R., Myer G.D., Shockley K., Hewett T.E., Prospectively identified deficits in sagittal plane hip-ankle coordination in female athletes who sustain a second anterior cruciate ligament injury after anterior cruciate ligament reconstruction and return to sport, Clin Biomech (Bristol, Avon), 30, pp. 1094-1101, (2015); Peel S.A., Schroeder L.E., Sievert Z.A., Weinhandl J.T., Comparing anterior cruciate ligament injury risk variables between unanticipated cutting and decelerating tasks, J Appl Biomech, 35, pp. 101-106, (2019); Poston G.R., Schmitt L.C., Ithurburn M.P., Hugentobler J.A., Thomas S., Paterno M.V., Reduced 2-D frontal plane motion during single-limb landing is associated with risk of future anterior cruciate ligament graft rupture after anterior cruciate ligament reconstruction and return to sport: a pilot study, J Orthop Sports Phys Ther, 51, pp. 82-87, (2021); Walden M., Krosshaug T., Bjorneboe J., Andersen T.E., Faul O., Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: a systematic video analysis of 39 cases, Br J Sports Med, 49, pp. 1452-1460, (2015); Weir G., Alderson J., Smailes N., Elliott B., Donnelly C., A reliable video-based ACL injury screening tool for female team sport athletes, Int J Sports Med, 40, pp. 191-199, (2019); Weitz F.K., Sillanpaa P.J., Mattila V.M., The incidence of paediatric ACL injury is increasing in Finland, Knee Surg Sports Traumatol Arthrosc, 28, pp. 363-368, (2020)","S. Di Paolo; Department for Life Quality Studies QUVI, University of Bologna, Bologna, Via Giulio Cesare Pupilli, 1, 40136, Italy; email: stefano.dipaolo@ior.it","","Springer Science and Business Media Deutschland GmbH","09422056","","","34480582","English","Knee Surg. Sports Traumatol. Arthroscopy","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85114154267" "Amiri-Khorasani M.; Mohammadkazemi R.; Sarafrazi S.; Riyahi-Malayeri S.; Sotoodeh V.","Amiri-Khorasani, Mohammadtaghi (36090950300); Mohammadkazemi, Reza (55509932800); Sarafrazi, Soodeh (55356138900); Riyahi-Malayeri, Shahin (55510103700); Sotoodeh, Vahid (55509308600)","36090950300; 55509932800; 55356138900; 55510103700; 55509308600","Kinematics analyses related to stretchshortening cycle during soccer instep kicking after different acute stretching","2012","Journal of Strength and Conditioning Research","26","11","","3010","3017","7","12","10.1519/JSC.0b013e3182443442","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870462592&doi=10.1519%2fJSC.0b013e3182443442&partnerID=40&md5=289027b302e813cd623b5261c80457d1","Department of Sports Biomechanics, Faculty of Physical Education and Sports Science, Shahid Bahonar University of Kerman, Kerman, Iran; Department of New Business, Faculty of Entrepreneurship, University of Tehran, Tehran, Iran; Department of Motor Behavior, Faculty of Physical Education and Sports Science, Shahid Bahonar University of Kerman, Kerman, Iran; Department of Physical Education and Sports Science, Islamic Azad University, East of Tehran Beranch, Tehran, Iran; Department of Physical Education, Darab Beranch, Islamic Azad University, Darab, Iran","Amiri-Khorasani M., Department of Sports Biomechanics, Faculty of Physical Education and Sports Science, Shahid Bahonar University of Kerman, Kerman, Iran; Mohammadkazemi R., Department of New Business, Faculty of Entrepreneurship, University of Tehran, Tehran, Iran; Sarafrazi S., Department of Motor Behavior, Faculty of Physical Education and Sports Science, Shahid Bahonar University of Kerman, Kerman, Iran; Riyahi-Malayeri S., Department of Physical Education and Sports Science, Islamic Azad University, East of Tehran Beranch, Tehran, Iran; Sotoodeh V., Department of Physical Education, Darab Beranch, Islamic Azad University, Darab, Iran","Kinematics analyses related to stretch-shortening cycle during soccer instep kicking after different acute stretching. J Strength Cond Res 26(11): 3010-3017, 2012-The purpose of this study was to examine the effects of static and dynamic stretching within a preexercise warm-up on angular velocity of knee joint, deepest knee flexion (DKF), and duration of eccentric and concentric contractions, which are relative to the stretch-shortening cycle (SSC) during instep kicking in professional soccer players. The kicking motions of dominant legs were captured from 18 Olympic professional male soccer players (height: 180.38 6 7.34 cm; weight: 69.77 6 9.73 kg; age: 19.22 6 1.83 years) using 4 digital video cameras at 50 Hz. There was a significant difference in the DKF after the dynamic stretching (23.22 6 3.10°) vs. static stretching (20.18 6 3.19°) relative to the no-stretching method with p , 0.001. Moreover, there was significant difference in eccentric duration after the dynamic stretching (0.006 6 0.01 seconds) vs. static stretching (20.003 6 0.01 seconds) relative to the no-stretching method with p , 0.015. There was a significant difference in the concentric duration after the dynamic stretching (20.007 6 0.01 seconds) vs. static stretching (0.002 6 0.01 seconds) relative to the no-stretching method with p, 0.001. There was also a significant difference in knee angular velocity after the dynamic stretching (4.08 6 3.81 rad°s-1) vs. static stretching (25.34 6 4.40 rad°s-1) relative to the no-stretching method with p , 0.001. We concluded that dynamic stretching during warm-ups, as compared with static stretching, is probably the most effective way as preparation for the kinematics characteristics of soccer instep kick, which are relative to the SSC. © 2012 National Strength and Conditioning Association.","Kicking velocity; Knee; SSC; Warm-Up","Adolescent; Adult; Biomechanics; Humans; Knee Joint; Male; Muscle Contraction; Muscle Stretching Exercises; Muscle, Skeletal; Plyometric Exercise; Soccer; Time Factors; Young Adult; adolescent; adult; article; biomechanics; controlled clinical trial; controlled study; human; knee; male; methodology; muscle contraction; physiology; plyometrics; randomized controlled trial; skeletal muscle; soccer; stretching exercise; time","Amiri-Khorasani M., Abu Osman N.A., Yusof A., Acute effect of static and dynamic stretching on kinematics of lower extremity during instep kicking in professional soccer players, Proceedings of 4th Asia Pacific Conference on Exercise and Sports Science & 8th International Sports Science Conference, pp. 223-228, (2009); Amiri-Khorasani M., Abu Osman N.A., Yusof A., Biomechanical responses of instep kick between different positions in professional soccer players, J Hum Kinetics, 22, pp. 21-27, (2009); Amiri-Khorasani M., Abu Osman N.A., Yusof A., Electromyography assessments of the vastus medialis muscle during soccer instep kicking between dynamic and static stretching, J Hum Kinetics, 24, pp. 35-42, (2010); Amiri-Khorasani M., Abu Osman N.A., Yusof A., Kinematics analysis: Number of trials necessary to achieve performance stability during soccer instep kicking, J Hum Kinetics, 23, pp. 15-20, (2010); Amiri-Khorasani M., Abu Osman N.A., Yusof A., Acute effect of static and dynamic stretching on hip dynamic range of motion (drom) during instep kicking in professional soccer players, J Strength Cond Res, 25, pp. 1177-1181, (2011); Amiri-Khorasani M., Abu Osman N.A., Yusof A., Biomechanical responses of thigh and lower leg during 10 consecutive soccer instep kicks, J Strength Cond Res, 25, pp. 1647-1652, (2011); Amiri-Khorasani M., Sahebozamani M., Tabrizi K.G., Yusof A., Acute effect of different stretching methods on illinois agility test in soccer players, J Strength Cond Res, 24, pp. 2698-2704, (2010); Behm D.G., Button D.C., Butt J.C., Factors affecting force loss with prolonged stretching, Can J Appl Physiol, 26, pp. 261-272, (2001); Cornwell A., Nelson A.G., Heise G.D., Sidaway B., Acute effects of passive muscle stretching on vertical jump performance, J Hum Mov Studies, 40, pp. 307-324, (2001); Cramer J.T., Housh T.J., Johnson G.O., Miller J.M., Coburn J.W., Beck T.W., Acute effects of static stretching on peak torque in women, J Strength Cond Res, 18, pp. 236-241, (2004); Cronin J.B., McNair P.J., Marshall R.N., Magnitude and decay of stretch-induced enhancement of power output, Eur J Appl Physiol, 84, pp. 575-581, (2001); Dyhre-Poulsen P., Simonsen E.B., Voigt M., Dynamic control of muscle stiffness and h reflex modulation during hopping and jumping in man, J Physiol, 437, pp. 287-304, (1991); Evetovich T.K., Nauman N.J., Conley D.S., Todd J.B., Effect of static stretching of the biceps brachii on torque, electromyography, and mechanomyography during concentric isokinetic muscle actions, J Strength Cond Res, 17, pp. 484-488, (2003); Faigenbaum A.D., Bellucci M., Bernieri A., Bakker B., Hoorens K., Acute effects of different warm-up protocols on fitness performance in children, J Strength Cond Res, 19, pp. 376-381, (2005); Fletcher I.M., Jones B., The effect of different warm-up stretch protocols on 20 meter sprint performance in trained rugby union players, J Strength Cond Res, 18, pp. 885-888, (2004); Fowles J.R., Sale D.G., MacDougall J.D., Reduced strength after passive stretch of the human plantar flexors, J App Physiol, 189, pp. 1179-1188, (2000); Fredrick G.A., Szymanski D.J., Baseball (part i): Dynamic flexibility, Strength Cond J, 23, pp. 21-30, (2001); Hedrick A., Dynamic flexibility training, Strength Cond J, 22, pp. 33-38, (2000); Herda T.J., Cramer J.T., Ryan E.D., Mchugh M.P., Stout J.R., Acute effects of static versus dynamic stretching on isometric peak torque, electromyography, and mechanomyography of the biceps femoris muscle, J Strength Cond Res, 22, pp. 809-817, (2008); 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The potential consequences, J Strength Cond Res, 28, pp. 66-74, (2006); Yamaguchi T., Ishii K., Effects of static stretching for 30 seconds and dynamic stretching on leg extension power, J Strength Cond Res, 19, pp. 677-683, (2005); Yamaguchi T., Ishii K., Yamanaka M., Yasuda K., Acute effects of dynamic stretching exercise on power output during concentric dynamic constant external resistance leg extension, J Strength Cond Res, 21, pp. 1238-1244, (2007)","M. Amiri-Khorasani; Department of Sports Biomechanics, Faculty of Physical Education and Sports Science, Shahid Bahonar University of Kerman, Kerman, Iran; email: amirikhorasani@uk.ac.ir","","","10648011","","","22158101","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-84870462592" "Taylor J.B.; Ford K.R.; Schmitz R.J.; Ross S.E.; Ackerman T.A.; Shultz S.J.","Taylor, Jeffrey B. (55829673200); Ford, Kevin R. (7102539333); Schmitz, Randy J. (7102530016); Ross, Scott E. (57000613600); Ackerman, Terry A. (16404476400); Shultz, Sandra J. (57206316430)","55829673200; 7102539333; 7102530016; 57000613600; 16404476400; 57206316430","Sport-specific biomechanical responses to an ACL injury prevention programme: A randomised controlled trial","2018","Journal of Sports Sciences","36","21","","2492","2501","9","13","10.1080/02640414.2018.1465723","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85045763304&doi=10.1080%2f02640414.2018.1465723&partnerID=40&md5=23c4f8bbc2a5d3fb04076f3c1ea2564c","Department of Physical Therapy, High Point University, High Point, NC, United States; Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, United States; American College Testing (ACT), Iowa City, IA, United States","Taylor J.B., Department of Physical Therapy, High Point University, High Point, NC, United States, Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, United States; Ford K.R., Department of Physical Therapy, High Point University, High Point, NC, United States; Schmitz R.J., Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, United States; Ross S.E., Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, United States; Ackerman T.A., American College Testing (ACT), Iowa City, IA, United States; Shultz S.J., Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, United States","Anterior cruciate ligament (ACL) injury prevention programmes have not been as successful at reducing injury rates in women’s basketball as in soccer. This randomised controlled trial (ClinicalTrials.gov #NCT02530333) compared biomechanical adaptations in basketball and soccer players during jump-landing activities after an ACL injury prevention programme. Eighty-seven athletes were cluster randomised into intervention (6-week programme) and control groups. Three-dimensional biomechanical analyses of drop vertical jump (DVJ), double- (SAG-DL) and single-leg (SAG-SL) sagittal, and double- (FRONT-DL) and single-leg (FRONT-SL) frontal plane jump landing tasks were tested before and after the intervention. Peak angles, excursions, and joint moments were analysed using two-way MANCOVAs of post-test scores while controlling for pre-test scores. During SAG-SL the basketball intervention group exhibited increased peak knee abduction angles (p = .004) and excursions (p = .003) compared to the basketball control group (p = .01) and soccer intervention group (p = .01). During FRONT-SL, the basketball intervention group exhibited greater knee flexion excursion after training than the control group (p = .01), but not the soccer intervention group (p = .11). Although women’s soccer players exhibit greater improvements in knee abduction kinematics than basketball players, these athletes largely exhibit similar biomechanical adaptations to ACL injury prevention programmes. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.","ACL; basketball; biomechanics; injury prevention; soccer","Adaptation, Physiological; Adolescent; Anterior Cruciate Ligament Injuries; Basketball; Biomechanical Phenomena; Humans; Knee; Physical Conditioning, Human; Plyometric Exercise; Soccer; Task Performance and Analysis; Young Adult; adaptation; adolescent; anterior cruciate ligament injury; basketball; biomechanics; comparative study; controlled study; exercise; human; injuries; knee; physiology; plyometrics; procedures; randomized controlled trial; soccer; task performance; young adult","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A 13-year review. 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[Meta-Analysis Research Support, N.I.H., Extramural], Journal of Athletic Training, 47, 6, pp. 714-723, (2012); Taylor J.B., Ford K.R., Nguyen A.D., Shultz S.J., Biomechanical comparison of single- and double-leg jump landings in the sagittal and frontal plane, Orthopedic Journal Sports Medica, 4, 6, (2016); Taylor J.B., Ford K.R., Nguyen A.D., Terry L.N., Hegedus E.J., Prevention of lower extremity injuries in basketball: A systematic review and meta-analysis, Sports Health, 7, 5, pp. 392-398, (2015); Taylor J.B., Ford K.R., Schmitz R.J., Ross S.E., Ackerman T.A., Shultz S.J., Biomechanical differences of multi-directional jump landings among female basketball and soccer players, Journal of Strength & Conditioning Research, (2017); Taylor J.B., Waxman J.P., Richter S.J., Shultz S.J., Evaluation of the effectiveness of anterior cruciate ligament injury prevention programme training components: A systematic review and meta-analysis, British Journal of Sports Medicine, 49, 2, pp. 79-87, (2015); Taylor J.B., Wright A.A., Dischiavi S.L., Townsend M.A., Marmon A.R., Activity demands during multi-directional team sports: A systematic review, Sports Medicine, 47, pp. 2533-2551, (2017); Thomson A., Whiteley R., Bleakley C., Higher shoe-surface interaction is associated with doubling of lower extremity injury risk in football codes: A systematic review and meta-analysis, British Journal of Sports Medicine, (2015); van Mechelen W., Hlobil H., Kemper H.C., Incidence, severity, aetiology and prevention of sports injuries. A review of concepts. [Comparative Study Research Support, Non-U.S. Gov’t Review], Sports Medicine, 14, 2, pp. 82-99, (1992); Wojtys E.M., Hoops News, Sports Health, 7, 5, pp. 390-391, (2015); Zebis M.K., Andersen L.L., Brandt M., Myklebust G., Bencke J., Lauridsen H.B., Aagaard P., Effects of evidence-based prevention training on neuromuscular and biomechanical risk factors for ACL injury in adolescent female athletes: A randomised controlled trial, British Journal of Sports Medicine, 50, 9, pp. 552-557, (2016)","J.B. Taylor; High Point University, High Point, One University Parkway, 27268, United States; email: jtaylor@highpoint.edu","","Routledge","02640414","","JSSCE","29671383","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-85045763304" "Pereira-Graterol E.; Álvarez-Díaz P.; Seijas R.; Ares O.; Cuscó X.; Cugat R.","Pereira-Graterol, Ernesto (55342848700); Álvarez-Díaz, Pedro (35785889400); Seijas, Roberto (23478773100); Ares, Oscar (24066638600); Cuscó, Xavier (21233688600); Cugat, Ramón (21233262500)","55342848700; 35785889400; 23478773100; 24066638600; 21233688600; 21233262500","Treatment and evolution of grade III acromioclavicular dislocations in soccer players","2013","Knee Surgery, Sports Traumatology, Arthroscopy","21","7","","1633","1635","2","12","10.1007/s00167-012-2186-0","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879266545&doi=10.1007%2fs00167-012-2186-0&partnerID=40&md5=6cadabbb326eda0331039a8dbe71dfda","Mutualidad Catalana de Futbolistas de la Federación Española de Fútbol, Barcelona, Spain; Department of Orthopaedic Surgery, Fundación García Cugat Hospital Quirón Barcelona, 08023 Barcelona, Pza Alfonso Comín 5-7 Planta-1 Hospital Quiron, Spain","Pereira-Graterol E., Mutualidad Catalana de Futbolistas de la Federación Española de Fútbol, Barcelona, Spain; Álvarez-Díaz P., Mutualidad Catalana de Futbolistas de la Federación Española de Fútbol, Barcelona, Spain, Department of Orthopaedic Surgery, Fundación García Cugat Hospital Quirón Barcelona, 08023 Barcelona, Pza Alfonso Comín 5-7 Planta-1 Hospital Quiron, Spain; Seijas R., Department of Orthopaedic Surgery, Fundación García Cugat Hospital Quirón Barcelona, 08023 Barcelona, Pza Alfonso Comín 5-7 Planta-1 Hospital Quiron, Spain; Ares O., Department of Orthopaedic Surgery, Fundación García Cugat Hospital Quirón Barcelona, 08023 Barcelona, Pza Alfonso Comín 5-7 Planta-1 Hospital Quiron, Spain; Cuscó X., Department of Orthopaedic Surgery, Fundación García Cugat Hospital Quirón Barcelona, 08023 Barcelona, Pza Alfonso Comín 5-7 Planta-1 Hospital Quiron, Spain; Cugat R., Mutualidad Catalana de Futbolistas de la Federación Española de Fútbol, Barcelona, Spain, Department of Orthopaedic Surgery, Fundación García Cugat Hospital Quirón Barcelona, 08023 Barcelona, Pza Alfonso Comín 5-7 Planta-1 Hospital Quiron, Spain","Purpose: To evaluate postoperative functional results in soccer players diagnosed with acute grade III acromioclavicular dislocation, stabilized with clavicular hook plate. Methods: Between 2006 and 2010, 11 soccer players were diagnosed with acute acromioclavicular dislocation. Mean age was 22.9 years. The clavicular hook plate was used for stabilization. The follow-up was 4 years (2-6 years). Results: Constant score showed 82 % excellent results and 18 % good functional results. Average pain measured with VAS was 1.8 (±0.59) mm out of 10. We did not report any complication within the process. Conclusions: Use of the clavicular hook plate is considered adequate for the treatment of acute acromioclavicular dislocation in soccer players, allowing a quick return to sports. Level of evidence: Retrospective case series, Level IV. © 2012 Springer-Verlag.","AC dislocation; AC dislocation in athletes; Clavicular hook plates; Soccer players","Acromioclavicular Joint; Biomechanical Phenomena; Bone Plates; Humans; Injury Severity Score; Male; Pain Measurement; Range of Motion, Articular; Retrospective Studies; Shoulder Dislocation; Soccer; Treatment Outcome; Young Adult; acromioclavicular joint; article; biomechanics; bone plate; human; injury; injury scale; joint characteristics and functions; male; pain assessment; retrospective study; shoulder dislocation; soccer; treatment outcome; young adult","Allman Jr. F.L., Fractures and ligamentous injuries of the clavicle and its articulation, J Bone Jt Surg Am, 49, pp. 774-784, (1967); Boileau P., Old J., Gastaud O., Brassart N., Roussanne Y., All-arthroscopic Weaver-Dunn-Chuinard procedure with double-button fixation for chronic acromioclavicular joint dislocation, Arthroscopy, 26, 2, pp. 149-160, (2010); Cardone D., Brown J.N., Roberts S.N., Saies A.D., Hayes M.G., Grade III acromioclavicular joint injury in Australian Rules Football, J Sci Med Sport, 5, 2, pp. 143-148, (2002); Cave E.F., Shoulder girdle injuries, Fractures and Other Injuries, pp. 258-259, (1958); Chandrasenan J., Badhe S., Cresswell T., DeBeer J., The clavicular hookplate consequences in three cases, Eur J Trauma Emerg Surg, 3, 5, pp. 557-559, (2007); De Baets T., Truijen J., Driesen R., Pittevils T., The treatment of acromioclavicular joint dislocation Tossy grade III with a clavicle hook plate, Acta Orthop Belg, 70, pp. 51-59, (2004); Faldini C., Nanni M., Leonetti D., Acri F., Galante C., Luciani D., Giannini S., Nonoperative treatment of closed displaced midshaft clavicle fractures, J Orthop Traumatol, 11, 4, pp. 229-236, (2010); Galpin R.D., Hawkins R.J., Grainger R.W., A comparative analysis of separation versus nonoperative treatment of grade III acromio-clavicular separations, Clin Orthop Relat Res, 193, pp. 150-155, (1985); Henkel T.H., Oetiker R., Hackenbruch W., Die Behandlung der frischen AC-luxation Tossy III durch Bandnaht und temporare Fixation mit Klavikula-Hakenplatte, Swiss Surg, 3, pp. 160-166, (1997); Larsen E., Bjerg-Nielsen A., Cristensen P., Conservative or surgical treatment of acromioclavicular dislocation, J Bone Jt Surg Am, 68, pp. 552-555, (1986); Lizaur A., Sanz-Reig J., Gonzalez-Parreno S., Long-term results of the surgical treatment of type III acromioclavicular dislocations: an update of a previous report, J Bone Jt Surg Br, 93, 8, pp. 1088-1092, (2011); Madsen B., Osteolysis of the acromial end of the clavicle following trauma, Br J Radiol, 36, pp. 822-828, (1963); Mazzocca A.D., Arciero R.A., Bicos J., Evaluation and treatment of acromioclavicular joint injuries, Am J Sports Med, 35, 2, pp. 316-329, (2007); Rockwood Jr. C.A., Williams G.R., Young D.C., Et al., Injuries of the acromioclavicular joint, Rockwood and Green's Fractures in Adults, pp. 1341-1431, (1996); Rockwood Jr. C.A., Williams G.R., Young D.C., Disorders of the acromioclavicular joint, The Shoulder, pp. 483-553, (1998); Salzmann G.M., Walz L., Buchmann S., Glabgly P., Venjakob A., Imhoff A.B., Arthroscopically assisted 2-bundle anatomical reduction of acute acromioclavicular joint separations, Am J Sports Med, 38, 6, pp. 1179-1187, (2010); Smith T.O., Chester R., Pearse E.O., Hing C.B., Operative versus non-operative management following Rockwood grade III acromioclavicular separation: a meta-analysis of the current evidence base, J Orthop Traumatol, 12, 1, pp. 19-27, (2011); Spencer E.E., Treatment of grade III acromioclavicular joint injuries, Clin Orthop Relat Res, 455, pp. 38-44, (2006); Tossy J.D., Mead N.C., Sigmond H.M., Acromioclavicular separation: useful and practical classification for treatment, Clin Orthop Relat Res, 28, pp. 111-119, (1963)","R. Seijas; Department of Orthopaedic Surgery, Fundación García Cugat Hospital Quirón Barcelona, 08023 Barcelona, Pza Alfonso Comín 5-7 Planta-1 Hospital Quiron, Spain; email: roberto6jas@gmail.com","","","14337347","","","22930193","English","Knee Surg. Sports Traumatol. Arthroscopy","Article","Final","","Scopus","2-s2.0-84879266545" "Zago M.; Moorhead A.P.; Bertozzi F.; Sforza C.; Tarabini M.; Galli M.","Zago, Matteo (57220045130); Moorhead, Alex Patten (57213002044); Bertozzi, Filippo (57197758376); Sforza, Chiarella (7005225305); Tarabini, Marco (23092293200); Galli, Manuela (7202606196)","57220045130; 57213002044; 57197758376; 7005225305; 23092293200; 7202606196","Maturity offset affects standing postural control in youth male soccer players","2020","Journal of Biomechanics","99","","109523","","","","12","10.1016/j.jbiomech.2019.109523","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85077509736&doi=10.1016%2fj.jbiomech.2019.109523&partnerID=40&md5=89b58fa7985780765aeb7d6c901c4871","Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Italy; E4Sport Lab, Politecnico di Milano, Italy; Fondazione Istituto Farmacologico Filippo Serpero, Milano, Italy; Dipartimento di Meccanica, Politecnico di Milano, Italy; Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Italy","Zago M., Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Italy, E4Sport Lab, Politecnico di Milano, Italy, Fondazione Istituto Farmacologico Filippo Serpero, Milano, Italy; Moorhead A.P., Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Italy, Dipartimento di Meccanica, Politecnico di Milano, Italy; Bertozzi F., Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Italy; Sforza C., Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Italy; Tarabini M., E4Sport Lab, Politecnico di Milano, Italy, Dipartimento di Meccanica, Politecnico di Milano, Italy; Galli M., Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Italy, E4Sport Lab, Politecnico di Milano, Italy","Quantifying the response of postural control in developmental athletes makes it possible to understand critical coordination and learning phases and to improve technical-physical interventions. However, the influence of maturation on postural control amongst young soccer players has neither been tested using quantitative methods, nor over a wide age range. In this study, we examined stabilometric parameters of 238 young male soccer players from 9 to 17 years old relative to maturity offset. Two 30-s tests (eyes open and eyes closed) were recorded on a baropodometric platform at 50 Hz. Participants were split into six groups according to their maturity offset, expressed as years from individual's peak height velocity. Dependent variables were: Sway Area, Center-of-Pressure velocity, standard deviation of the antero-posterior and medio-lateral Center-of-Pressure trajectory, Romberg Quotient. Sway Area was significantly higher in players with maturity offset <−1.5 than in groups with maturity offset > 0.5 years (p < 0.001, large effect). Center-of-Pressure velocity markedly dropped in players with maturity offset >−0.5 years (p < 0.001, very large effect). Antero-posterior standard deviation was higher before than after peak height velocity (p < 0.05, large effect) and significantly higher with closed eyes at some points. Medio-lateral standard deviation was higher in the youngest group of players (maturity offset <−2.5 years, large effect) than in those with maturity offset >−0.5 years. In sum, stabilometric parameters improved with age until zero maturity offset was achieved. Thereafter, variables describing postural control in developing soccer players were almost stable. No evidence of a changing role of vision in postural sway control during maturation was observed. © 2019 Elsevier Ltd","Balance; Peak height velocity; Stability; Team sports","Adolescent; Athletes; Biomechanical Phenomena; Child; Humans; Male; Postural Balance; Pressure; Soccer; Standing Position; Balancing; Convergence of numerical methods; Statistics; Velocity; Center of pressure; Dependent variables; Learning phasis; Peak height; Postural control; Quantitative method; Standard deviation; Team sports; adolescent; article; child; controlled study; dependent variable; eye; human; juvenile; male; maturity; soccer player; team sport; vision; athlete; biomechanics; body equilibrium; physiology; pressure; soccer; Sports","Corso M., Developmental changes in the youth athlete: implications for movement, skills acquisition, performance and injuries, J. Can. Chiropr. Assoc., 62, pp. 150-160, (2018); Demura S.-I., Noda M., Kitabayashi T., Aoki H., Age-stage differences in body sway during a static upright posture bnased on sway factors and relative accumulation of power frequency, Percept. Mot. Skills, 107, pp. 89-98, (2008); Fuller C.W., Ekstrand J., Junge A., Andersen T.E., Bahr R., Dvorak J., Hagglund M., McCrory P., Meeuwisse W.H., Consensus statement on injury definitions and data collection procedures in studies of football (soccer) injuries, Clin. J. Sport Med., 16, pp. 97-106, (2006); Galli M., Rigoldi C., Celletti C., Mainardi L., Tenore N., Albertini G., Camerota F., Postural analysis in time and frequency domains in patients with Ehlers-Danlos syndrome, Res. Dev. Disabil., 32, pp. 322-325, (2011); Gerbino P.G., Griffin E.D., Zurakowski D., Comparison of standing balance between female collegiate dancers and soccer players, Gait Posture, 26, pp. 501-507, (2007); Godoi D., Barela J.A., Optical flow structure effects in children's postural control, PLoS ONE, 11, (2016); Hsu Y.S., Kuan C.C., Young Y.H., Assessing the development of balance function in children using stabilometry, Int. J. Pediatr. Otorhinolaryngol., 73, pp. 737-740, (2009); Huurnink A., Fransz D.P., de Boode V.A., Kingma I., van Dieen J.H., Age-matched Z-scores for longitudinal monitoring of center of pressure speed in single-leg stance performance in elite male youth soccer players, J. Strength Cond. Res. epub ahead., (2018); John C., Rahlf A.L., Hamacher D., Zech A., Influence of biological maturity on static and dynamic postural control among male youth soccer players, Gait Posture, 68, pp. 18-22, (2019); Le Gall F., Carling C., Reilly T., Biological maturity and injury in elite youth football, Scand. J. Med. Sci. Sport., 17, pp. 564-572, (2007); Lloyd R.S., Oliver J.L., Faigenbaum A.D., Myer G.D., De Ste Croix M.B.A., Chronological age vs. biological maturation: Implications for exercise programming in youth, J. Strength Cond. Res., 28, pp. 1454-1464, (2014); Lovecchio N., Zago M., Perucca L., Sforza C., Short-term repeatability of stabilometric assessments, J. Mot. Behav., 49, pp. 123-128, (2017); Malina R.M., Rogol A.D., Cumming S.P., Coelho E Silva M.J., Figueiredo A.J., Biological maturation of youth athletes: Assessment and implications, Br. J. Sports Med., 49, pp. 852-859, (2015); Mirwald R.L., Baxter-Jones A.D.G., Bailey D.A., Beunen G.P., An assessment of maturity from anthropometric measurements, Med. Sci. Sports Exerc., 34, pp. 689-694, (2002); Monteiro Ferronato P.A., Barela J.A., Age-related changes in postural control: rambling and trembling trajectories, Mot. Control, 15, pp. 481-493, (2011); Moore S.A., McKay H.A., Macdonald H., Nettlefold L., Baxter-Jones A.D.G., Cameron N., Brasher P.M.A., Enhancing a somatic maturity prediction model, Med. Sci. Sports Exerc., 47, pp. 1755-1764, (2015); Nolan L., Grigorenko A., Thorstesson A., Balance control: sex and age differences in 9- to 16-year-olds, Dev. Med. Child Neurol., 47, pp. 449-454, (2005); Peterson M.L., Christou E., Rosengren K.S., Children achieve adult-like sensory integration during stance at 12-years-old, Gait Posture, 23, pp. 455-463, (2006); Quatman-Yates C.C., Quatman C.E., Meszaros A.J., Paterno M.V., Hewett T.E., A systematic review of sensorimotor function during adolescence: a developmental stage of increased motor awkwardness?, Br. J. Sports Med., 46, pp. 649-655, (2012); Riach C., Starkes J., Velocity of centre of pressure excursions as an indicator of postural control systems in children, Gait Posture, 167-172, (1994); Richardson J.T.E., Eta squared and partial eta squared as measures of effect size in educational research, Educ. Res. Rev., (2011); Sabato T.M., Walch T.J., Caine D.J., The elite young athlete: strategies to ensure physical and emotional health, Open Access J. Sport. Med., 6, pp. 99-113, (2016); Steindl R., Kunz K., Schrott-Fischer A., Scholtz A.W., Effect of age and sex on maturation of sensory systems and balance control, Dev. Med. Child Neurol., 48, pp. 477-482, (2006); Stratton G., Jones M., Fox K.R., Tolfrey K., Harris J., Maffulli N., Lee M., Frostick S.P., BASES position statement on guidelines for resistance exercise in young people, J. Sports Sci., 22, pp. 383-390, (2004); Verbecque E., Vereeck L., Hallemans A., Postural sway in children: A literature review, Gait Posture, 49, pp. 402-410, (2016); Wolff D.R., Rose J., Jones V.K., Bloch D.A., Oehlert J.W., Gamble J.G., Postural balance measurements for children and adolescents, J. Orthop. Res., 16, pp. 271-275, (1998); Zago M., Giuriola M., Sforza C., Effects of a combined technique and agility program on youth soccer players’ skills, Int. J. Sport. Sci. Coach., 11, pp. 710-720, (2016); Zago M., Motta A.F., Mapelli A., Annoni I., Galvani C., Sforza C., Effect of leg dominance on the center-of-mass kinematics during an inside-of-the-foot kick in amateur soccer players, J. Hum. Kinet., 42, pp. 51-61, (2014)","M. Zago; Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milano, Italy Piazza Leonardo da Vinci 32, 20133, Italy; email: matteo2.zago@polimi.it","","Elsevier Ltd","00219290","","JBMCB","31767282","English","J. Biomech.","Article","Final","","Scopus","2-s2.0-85077509736" "Hunter A.H.; Angilletta M.J., Jr.; Pavlic T.; Lichtwark G.; Wilson R.S.","Hunter, Andrew H. (56035848000); Angilletta, Michael J. (30267459000); Pavlic, Theodore (6504516761); Lichtwark, Glen (58668474400); Wilson, Robbie S. (7501532445)","56035848000; 30267459000; 6504516761; 58668474400; 7501532445","Modeling the two-dimensional accuracy of soccer kicks","2018","Journal of Biomechanics","72","","","159","166","7","16","10.1016/j.jbiomech.2018.03.003","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044314810&doi=10.1016%2fj.jbiomech.2018.03.003&partnerID=40&md5=9e3a0190d0827fd9a9be8a62b2c05f2a","School of Biological Sciences, The University of Queensland, St Lucia, 4072, QLD, Australia; School of Life Sciences, Arizona State University, United States; School of Computing, Informatics, and Decision Systems Engineering, Arizona State University, United States; School of Sustainability, Arizona State University, United States; School of Human Movement and Nutritional Sciences, The University of Queensland, St Lucia, QLD, Australia","Hunter A.H., School of Biological Sciences, The University of Queensland, St Lucia, 4072, QLD, Australia; Angilletta M.J., Jr., School of Life Sciences, Arizona State University, United States; Pavlic T., School of Computing, Informatics, and Decision Systems Engineering, Arizona State University, United States, School of Sustainability, Arizona State University, United States; Lichtwark G., School of Human Movement and Nutritional Sciences, The University of Queensland, St Lucia, QLD, Australia; Wilson R.S., School of Biological Sciences, The University of Queensland, St Lucia, 4072, QLD, Australia","In many sports, athletes perform motor tasks that simultaneously require both speed and accuracy for success, such as kicking a ball. Because of the biomechanical trade-off between speed and accuracy, athletes must balance these competing demands. Modelling the optimal compromise between speed and accuracy requires one to quantify how task speed affects the dispersion around a target, a level of experimental detail not previously addressed. Using soccer penalties as a system, we measured two-dimensional kicking error over a range of speeds, target heights, and kicking techniques. Twenty experienced soccer players executed a total of 8466 kicks at two targets (high and low). Players kicked with the side of their foot or the instep at ball speeds ranging from 40% to 100% of their maximum. The inaccuracy of kicks was measured in horizontal and vertical dimensions. For both horizontal and vertical inaccuracy, variance increased as a power function of speed, whose parameter values depended on the combination of kicking technique and target height. Kicking precision was greater when aiming at a low target compared to a high target. Side-foot kicks were more accurate than instep kicks. The centre of the dispersion of shots shifted as a function of speed. An analysis of the covariance between horizontal and vertical error revealed right-footed kickers tended to miss below and to the left of the target or above and to the right, while left-footed kickers tended along the reflected axis. Our analysis provides relationships needed to model the optimal strategy for penalty kickers. © 2018 Elsevier Ltd","Accuracy; Kick; Modeling; Penalty; Soccer; Speed; Trade-off","Adolescent; Adult; Athletes; Biomechanical Phenomena; Foot; Functional Laterality; Humans; Models, Biological; Soccer; Young Adult; Dispersions; Economic and social effects; Models; Sports; Accuracy; Kick; Penalty; Soccer; Trade off; accuracy; adolescent; adult; Article; biomechanics; controlled study; error; foot; human; human experiment; male; mathematical model; normal human; physical parameters; priority journal; soccer; soccer player; velocity; young adult; athlete; biological model; hemispheric dominance; physiology; soccer; Speed","Andersen T.B., Dorge H.C., The influence of speed of approach and accuracy constraint on the maximal speed of the ball in soccer kicking, Scand. J. Med. Sci. Sports, 21, pp. 79-84, (2011); Asai T., Carre M.J., Akatsuka T., Haake S.J., The curve kick of a football. I. Impact with the foot, Sports Eng., 5, pp. 183-192, (2002); Asami T., Togari H., Kikuchi T., Energy efficiency of ball kicking, Biomechanics V-B, pp. 135-140, (1976); Bar-Eli M., Azar O.H., Penalty kicks in soccer: an empirical analysis of shooting strategies and goalkeepers’ preferences, Soccer Soc., 10, pp. 183-191, (2009); Barton K., (2013); Browder K.D., Tant C.L., Wilkerson J.D., A three dimensional kinematic analysis of three kicking techniques in female players, Biomechanics in Sport IX, pp. 95-100, (1991); Burnham K.P., Anderson D.R., Model Selection and Multimodel Inference: A PracticalInformation-Theoretic Approach, (2002); Carre M.J., Asai T., Akatsuka T., Haake S.J., The curve kick of a football. II: Flight through the air, Sports Eng., 5, pp. 193-200, (2002); Etnyre B.R., Accuracy characteristics of throwing as a result of maximum force effort, Percept Mot. Skills, 86, pp. 1211-1217, (1998); Fitts P.M., The information capacity of the human motor system in controlling the amplitude of movement, J. Exp. Psychol., 47, pp. 381-391, (1954); Freeston J., Ferdinands R., Rooney K., Throwing velocity and accuracy in elite and sub-elite cricket players: a descriptive study, Euro. J. Sport Sci., 7, pp. 231-237, (2007); Freeston J., Rooney K., Throwing speed and accuracy in baseball and cricket players, Percept. Mot. Skills, 118, pp. 637-650, (2014); Hedrick T.L., Software techniques for two- and three-dimensional kinematic measurements of biological and biomimetic systems, Bioinspir. Biomim., 3, pp. 1-6, (2008); Indermill C., Husak W.S., Relationship between speed and accuracy in an over-arm throw, Percept. Mot. Skills, 59, pp. 219-222, (1984); Juras G., Slomka K., Latash M., Violations of fitts’ law in a ballistic task, J. Mot. Behav., 41, pp. 525-528, (2009); Kawamoto R., Miyaghi O., Ohashi J., Fukashiro S., Biomechanical study of mechanism of speed-accuracy trade-off in a side-foot soccer kick, Jpn. J. Biomech. Sports Exercise, 10, pp. 235-244, (2006); Lees A., Nolan L., Three-dimensional kinematic analysis of the instep kick under speed and accuracy conditions, Science and Football IV, pp. 16-21, (2002); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med. Sci. Sports Exerc., 30, pp. 917-927, (1998); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med. Sci. Sports Exerc., 34, pp. 2028-2036, (2002); Pinheiro J., Bates D., DebRoy S., Sarkar D., (2011); Core Team R., R: A language and environment for statistical computing, (2016); Sakamoto K., Asai T., Comparison of kicking motion characteristics at ball impact between female and male soccer players, Int. J. Sports Sci. Sci. Coach., 8, pp. 63-76, (2013); Schmidt R.A., Zelaznik H., Hawkins B., Frank J.S., Quinn J.T., Motor-output variability: a theory for the accuracy of rapid motor acts, Psychol. Rev., 86, pp. 415-451, (1979); Scurr J., Hall B., The effects of approach angle on penalty kicking accuracy and kick kinematics with recreational soccer players, J Sports Sci Med, 8, pp. 230-234, (2009); Shinkai H., Nunome H., Isokawa M., Ikegami Y., Ball impact dynamics of instep soccer kicking, Med. Sci. Sports Exerc., 41, pp. 889-897, (2009); Sterzing T., Lange J.S., Wachtler T., Muller C., Milani T.L., (2009); Stoner L., Ben-Sira D., Variation in movement patterns of professional soccer players when executing a long range in-step soccer kick, Biomechanics VII-B, pp. 337-342, (1981); Tol J.L., Slim E., van Soest A.J., van Dijk C.N., The relationship of the kicking action in soccer and anterior ankle impingement syndrome – a biomechanical analysis, Am. J. Sports Med., 30, pp. 45-50, (2002); Urbin M.A., Stodden D., Boros R., Shannon D., Examining impulse-variability in overarm throwing, Mot. Control, 16, pp. 19-30, (2012); Van Den Tillaar R., Ettema G., A comparison between novices and experts of the velocity-accuracy trade-off in overam throwing, Percept. Mot. Skills, 103, pp. 503-514, (2006); Vieira L.H.P., de Souza Serenza F., de Andrade V.L., de Paula Oliveira L., Mariano F.P., Santana J.E., Santiago P.R.P., Kicking performance and muscular strength parameters with dominant and nondominant lower limbs in brazilian elite professional futsal players, J. Appl. Biomech., 32, pp. 578-585, (2016); Wilhelm S., (2015)","A.H. Hunter; School of Biological Sciences, The University of Queensland, St Lucia, 4072, Australia; email: a.hunter@uq.edu.au","","Elsevier Ltd","00219290","","JBMCB","29580692","English","J. Biomech.","Article","Final","","Scopus","2-s2.0-85044314810" "Thomas C.; Dos'Santos T.; Comfort P.; Jones P.A.","Thomas, Christopher (56754565800); Dos'Santos, Thomas (57170712800); Comfort, Paul (26767602800); Jones, Paul A. (55308526600)","56754565800; 57170712800; 26767602800; 55308526600","Effect of Asymmetry on Biomechanical Characteristics During 180° Change of Direction","2020","Journal of Strength and Conditioning Research","34","5","","1297","1306","9","13","10.1519/JSC.0000000000003553","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85084027499&doi=10.1519%2fJSC.0000000000003553&partnerID=40&md5=41d906bbfeb7a4691587bff048ca79ba","Sport, Exercise and Physiotherapy, University of Salford, Greater Manchester, Salford, United Kingdom","Thomas C., Sport, Exercise and Physiotherapy, University of Salford, Greater Manchester, Salford, United Kingdom; Dos'Santos T., Sport, Exercise and Physiotherapy, University of Salford, Greater Manchester, Salford, United Kingdom; Comfort P., Sport, Exercise and Physiotherapy, University of Salford, Greater Manchester, Salford, United Kingdom; Jones P.A., Sport, Exercise and Physiotherapy, University of Salford, Greater Manchester, Salford, United Kingdom","The aim of this study was to explore the effect of asymmetry on biomechanical characteristics during two 180° change of direction (CoD) tasks (505 and modified 505 [505mod]). Fifty-two male (n = 24; age = 22.1 ± 4.8 years; height = 1.78 ± 0.06 m; body mass = 76.9 ± 10.8 kg) and female (n = 28; age = 19.1 ± 1.7 years; height = 1.67 ± 0.06 m; body mass = 60.4 ± 7.4 kg) team-sport players were recruited for this investigation. Three-dimensional motion data using 10 Qualisys Oqus 7 infrared cameras (240 Hz) and ground reaction force (GRF) data from 2 AMTI force platforms (1,200 Hz) were collected to analyze penultimate contacts (PEN) and final foot contacts. A series of repeated-measures analysis of variance were used to examine for differences in each dependent variable. Significant differences existed between dominant (D) and nondominant (ND) limbs for knee abduction angle (KAA) during 505mod (p = 0.048), while significant differences existed for peak horizontal and vertical GRF (vGRF) (p < 0.001) during 505. For both tasks, the PEN involved significantly greater peak vGRF, hip flexion angles, hip extensor moments, knee flexion angles, and knee extensor moments, but lower average vGRF, horizontal GRF, and peak ankle extensor moments. For 505, the ND limb involved significantly greater peak vGRF, but the opposite was revealed for peak horizontal GRF. For 505mod, the D limb involved significantly greater KAAs. Finally, there was a significant interaction (group × limb) for peak horizontal GRF ratio during 505. For both tasks, there was no interaction or main effects for time to completion. Therefore, it appears asymmetry influences GRFs and KAAs, but not completion time during 180° CoD in team-sport players. © 2020 National Strength and Conditioning Association.","anterior cruciate ligament injury; deceleration; ground reaction forces; hop testing; knee abduction moments; pivoting","Adolescent; Adult; Athletes; Athletic Performance; Biomechanical Phenomena; Cross-Sectional Studies; Exercise Test; Female; Humans; Lower Extremity; Male; Range of Motion, Articular; Rotation; Soccer; Transcription Factors; Young Adult; Thrsp protein, mouse; transcription factor; adolescent; adult; athlete; athletic performance; biomechanics; cross-sectional study; exercise test; female; human; joint characteristics and functions; lower limb; male; physiology; procedures; rotation; soccer; young adult","Aldukhail A., Jones P., Gillard H., Graham-Smith P., Clinical diagnosis of strength and power asymmetry, Biol Sport, 15, pp. 33-38, (2013); Angeloni C., Cappozzo A., Catani F., Leardini A., Quantification of relative displacement of skin-and plate-mounted markers with respect to bones, J Biomech, 26, (1993); Bell A.L., Brand R.A., Pedersen D.R., Prediction of hip joint centre location from external landmarks, Hum Mov Sci, 8, pp. 3-16, (1989); Boden B.P., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, (2000); Boden B.P., Sheehan F.T., Torg J.S., Hewett T.E., Non-contact ACL injuries: Mechanisms and risk factors, J Am Acad Orthop Surg, 18, (2010); Boden B.P., Torg J.S., Knowles S.B., Hewett T.E., Video analysis of anterior cruciate ligament injury abnormalities in hip and ankle kinematics, Am J Sports Med, 37, pp. 252-259, (2009); Brophy R., Silvers H.J., Gonzales T., Mandelbaum B.R., Gender influences: The role of leg dominance in ACL injury among soccer players, Br J Sports Med, 44, pp. 694-697, (2010); Brown N., Donelon T., Smith L.C., Jones P.A., An investigation into the effect of limb preference on knee mechanics and braking strategy during a 180° change of direction task: An exploratory study, J Sports Sci, 34, (2016); Brown S.R., Wang H., Dickin D.C., Weiss K.J., The relationship between leg preference and knee mechanics during sidestepping in collegiate female footballers, Sports Biomech, 13, pp. 351-361, (2014); 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Gabbett T.J., Kelly J.N., Sheppard J.M., Speed, change of direction speed, and reactive agility of rugby league players, J Strength Cond Res, 22, pp. 174-181, (2008); Graham-Smith P., Al-Dukhail A., Jones P., Agreement between attributes associated with bilateral jump asymmetry, ISBS-Conference Proc Archive, 33, pp. 926-929, (2015); Graham-Smith P., Atkinson L., Barlow R., Jones P., Braking characteristics and load distribution in 180 degree turns, UK Strength Cond Assoc, pp. 6-7, (2009); Greska E.K., Cortes N., Ringleb S.I., Onate J.A., Van Lunen B.L., Biomechanical differences related to leg dominance were not found during a cutting task, Scand J Med Sci Sports, 27, pp. 1328-1336, (2016); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, J Biomech Eng, 105, pp. 136-144, (1983); Havens K.L., Sigward S.M., Whole bodymechanics differ among running and cutting maneuvers in skilled athletes, Gait Posture, 42, pp. 240-245, (2015); 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Jones P.A., Thomas C., Dos'Santos T., McMahon J.J., Graham-Smith P., The role of eccentric strength in 180° turns in female soccer players, Sports, 5, (2017); Keiner M., Sander A., Wirth K., Schmidtbleicher D., Long-term strength training effects on change-of-direction sprint performance, J Strength Cond Res, 28, pp. 223-231, (2014); Kristianslund E., Faul O., Bahr R., Myklebust G., Krosshaug T., Sidestep cutting technique and knee abduction loading: Implications for ACL prevention exercises, Br J Sports Med, 48, pp. 779-783, (2014); Kristianslund E., Krosshaug T., Comparison of drop jumps and sportspecific sidestep cutting: Implications for anterior cruciate ligament injury risk screening, Am J Sports Med, 41, pp. 684-688, (2013); Krosshaug T., Nakamae A., Boden B.P., Et al., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, Am J Sports Med, 35, pp. 359-367, (2007); Lockie R.G., Callaghan S.J., Berry S.P., Et al., Relationship between unilateral jumping ability and asymmetry on multidirectional speed in team-sport athletes, J Strength Cond Res, 28, pp. 3557-3566, (2014); 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McLean S.G., Su A., Van Den Bogert A.J., Development and validation of a 3-D model to predict knee joint loading during dynamic movement, J Biomech Eng, 125, pp. 864-874, (2003); Munro A.G., Herrington L.C., Between-session reliability of four hop tests and the agility T-test, J Strength Cond Res, 25, pp. 1470-1477, (2011); Myklebust G., Maehlum S., Holm I., Bahr R., A prospective cohort study of anterior cruciate ligament injuries in elite Norwegian team handball, Scand J Med Sci Sports, 8, pp. 149-153, (1998); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball a systematic video analysis, Am J Sports Med, 32, pp. 1002-1012, (2004); Sheppard J.M., Young W.B., Agility literature review: Classifications, training and testing, J Sports Sci, 24, pp. 919-932, (2006); Sigward S.M., Cesar G.M., Havens K.L., Predictors of frontal plane knee moments during side-step cutting to 45 and 110 degrees in men and women: Implications for anterior cruciate ligament injury, Clin J Sport Med, 25, pp. 529-534, (2015); Sigward S.M., Pollard C.D., Havens K.L., Powers C.M., The influence of sex and maturation on knee mechanics during side-step cutting, Med Sci Sports Exerc, 44, pp. 1497-1503, (2012); Stuelcken M.C., Mellifont D.B., Gorman A.D., Sayers M.G.L., Mechanisms of anterior cruciate ligament injuries in elite women's netball: A systematic video analysis, J Sports Sci, 34, pp. 1-7, (2015); Thomas C., Dos'Santos T., Kyriakidou I., Et al., A Comparison of Braking Characteristics between Modified and Traditional 505 Change of Direction Tasks in Female Netball Players: An Exploratory Study, The 8th Annual Strength and Conditioning Student Conference, (2017); Thomas C., Dos'Santos T., Kyriakidou I., Et al., An Investigation into the Effect of Limb Preference on Knee Mechanics and Braking Strategy during Pivoting in Female Soccer Players: An Exploratory Study, The 8th Annual Strength and Conditioning Student Conference, (2017); Winter D.A., Biomechanics and Motor Control of Human Movement, pp. 107-110, (2009); Yeadon M.R., Kato T., Kerwin D.G., Measuring running speed using photocells, J Sports Sci, 17, pp. 249-257, (1999); Yu B., Lin C.F., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clin Biomech (Bristol, Avon), 21, pp. 297-305, (2006)","C. Thomas; Sport, Exercise and Physiotherapy, University of Salford, Salford, Greater Manchester, United Kingdom; email: c.thomas2@edu.salford.ac.uk","","NSCA National Strength and Conditioning Association","10648011","","","32149886","English","J. Strength Cond. Res.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85084027499" "Leblebici G.; Akalan E.; Apti A.; Kuchimov S.; Kurt A.; Onerge K.; Temelli Y.; Miller F.","Leblebici, Gokce (56925514500); Akalan, Ekin (23101996200); Apti, Adnan (56884716500); Kuchimov, Shavkat (35339199200); Kurt, Aslihan (57202816829); Onerge, Kubra (57194705636); Temelli, Yener (23391022900); Miller, Freeman (7401771177)","56925514500; 23101996200; 56884716500; 35339199200; 57202816829; 57194705636; 23391022900; 7401771177","Increased femoral anteversion-related biomechanical abnormalities: lower extremity function, falling frequencies, and fatigue","2019","Gait and Posture","70","","","336","340","4","14","10.1016/j.gaitpost.2019.03.027","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063690431&doi=10.1016%2fj.gaitpost.2019.03.027&partnerID=40&md5=01061df23cf80a17d2ec436708efd668","Istanbul Medeniyet University, Physiotherapy and Rehabilitation Department, Turkey; Istanbul Kultur University, Physiotherapy and Rehabilitation Department, Turkey; Bogazici University, Biomedical Engineering Institute, Turkey; Biruni University, Physiotherapy and Rehabilitation Department, Turkey; MedAmerikan Medical Center, Orthopedics Department, Turkey; Nemours/Alfred I. duPont Hospital for Children, Turkey","Leblebici G., Istanbul Medeniyet University, Physiotherapy and Rehabilitation Department, Turkey; Akalan E., Istanbul Kultur University, Physiotherapy and Rehabilitation Department, Turkey; Apti A., Istanbul Kultur University, Physiotherapy and Rehabilitation Department, Turkey; Kuchimov S., Bogazici University, Biomedical Engineering Institute, Turkey; Kurt A., Biruni University, Physiotherapy and Rehabilitation Department, Turkey; Onerge K., Istanbul Kultur University, Physiotherapy and Rehabilitation Department, Turkey; Temelli Y., MedAmerikan Medical Center, Orthopedics Department, Turkey; Miller F., Nemours/Alfred I. duPont Hospital for Children, Turkey","Background: Increased femoral anteversion (IFA) is defined as forwardly rotated femoral head relative to the transcondylar knee axis which may have a potential to reduce the functional quality of adolescents. Therefore, the aim of our study was to investigate the effects of IFA on lower-extremity function, falling frequency, and fatigue onset in neurologically intact children. Research question: Does increased femoral anteversion influence lower extremity function, falling frequency and fatigue on set in healthy children? Methods: Sixty-five participants with increased femoral anteversion (IFA) and thirty-two healthy peers as control were included into the study. For the function, the lower extremity function form (LEFF) which is adapted from Lower Extremity Function Test used. Falling frequency and fatigue onset time were assessed by a Likert-type scale. In addition, the activities which cause frequently fall for the participants were questioned.Results: Lower extremity function was found deteriorated (p= 0.02) and falling frequency was higher (p = 0.00) in IFA than in controls. Fatigue onset time was not different between groups, although lower extremity function was strongly correlated with fatigue onset (rho = –0.537, p < 0.001). IFA children fall four times more during running (60%), three times more during fast walking (21.42%) than their healthy peers (14.28%, 7.14% respectively). Significance: IFA leads functional problems, especially in the form of high falling frequencies. According to the LEFF score, the most difficult functional parameters for these children were walking long distances, becoming tired, walking more than a mile, and standing on one spot. Also, shorter fatigue onset time may worsen the lower-extremity function secondarily. Because of the higher frequency of falling and functional problems, children with IFA may be more defenseless to injuries, especially in high-motor-skill activities such as running and soccer. © 2019","Fall; Fatigue; Femoral anteversion; Function","Accidental Falls; Biomechanical Phenomena; Bone Anteversion; Case-Control Studies; Child; Female; Femur Head; Healthy Volunteers; Humans; Lower Extremity; Male; Muscle Fatigue; Running; Walking; Article; bone anteversion; child; controlled study; falling; fatigue; femur; human; Lower Extremity Functional Scale; major clinical study; priority journal; running; school child; standing; walking; biomechanics; bone anteversion; case control study; female; femoral head; lower limb; male; muscle fatigue; normal human; pathophysiology; physiology","Karol L.A., Rotational deformities in the lower extremities, Curr. Opin. Pediatr., 9, 1, pp. 77-80, (1997); Mooney J.F., 3rd, lower extremity rotational and angular issues in children, Pediatr. Clin. North Am., 61, 6, pp. 1175-1183, (2014); Akalan N.E., Temelli Y., Kuchimov S., Discrimination of abnormal gait parameters due to increased femoral anteversion from other effects in cerebral palsy, Hip Int., 23, 5, pp. 492-499, (2013); Staheli L.T., Rotational problems of the lower extremities, Orthop. Clin. North Am., 18, 4, pp. 503-512, (1987); Li Y.H., Leong J.C., Intoeing gait in children, Hong Kong Med. J., 5, 4, pp. 360-366, (1999); Staheli L.T., Corbett M., Wyss C., King H., Lower-extremity rotational problems in children. Normal values to guide management, J. Bone Joint Surg. Am., 67, 1, pp. 39-47, (1985); Bruce R.W., Torsional and angular deformities, Pediatr. Clin. North Am., 43, 4, pp. 867-881, (1996); Lincoln T.L., Suen P.W., Common rotational variations in children, J. Am. Acad. Orthop. 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Bone Joint Surg. Am., 97, 7, pp. 537-543, (2015); Naqvi G., Stohr K., Rehm A., Proximal femoral derotation osteotomy for idiopathic excessive femoral anteversion and intoeing gait, SICOT, 3, (2017); Staheli L.T., Rotational problems in children, J. Bone Joint Surg. Am., 75a, 6, pp. 939-952, (1993); Sass P., Hassan G., Lower extremity abnormalities in children, Am. Fam. Phys., 68, 3, pp. 461-468, (2003); Passmore E., Graham H.K., Pandy M.G., Sangeux M., Hip- and patellofemoral-joint loading during gait are increased in children with idiopathic torsional deformities, Gait Posture, 63, pp. 228-235, (2018); Davids J.R., Benfanti P., Blackhurst D.W., Allen B.L., Assessment of femoral anteversion in children with cerebral palsy: accuracy of the trochanteric prominence angle test, J. Pediatr. Orthop. 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Q, 31, 1, (2011); Fabry G., Macewen G.D., Shands A., Torsion of the femur: a follow-up study in normal and abnormal conditions, JBJS, 55, 8, pp. 1726-1738, (1973); Hudson D., The rotational profile: a study of lower limb axial torsion, hip rotation, and the foot progression angle in healthy adults, Gait Posture, 49, pp. 426-430, (2016); Thackeray C., Beeson P., In-toeing gait in children. A review of the literature, Foot Edinb. (Edinb), 6, 1, pp. 1-4, (1996); Beebe M.J., Wylie J.D., Bodine B.G., Kapron A.L., Maak T.G., Mei-Dan O., Et al., Accuracy and reliability of computed tomography and magnetic resonance imaging compared with true anatomic femoral version, J. Pediatr. Orthop., 37, 4, pp. e265-e270, (2017); Murray K.J., Woo P., Benign joint hypermobility in childhood, Rheumatol. Oxford (Oxford), 40, 5, pp. 489-491, (2001)","E. Akalan; Istanbul Kultur University, Physiotherapy and Rehabilitation Department, Turkey; email: ekin.akalan@gmail.com","","Elsevier B.V.","09666362","","GAPOF","30952106","English","Gait Posture","Article","Final","","Scopus","2-s2.0-85063690431" "Potthast W.","Potthast, Wolfgang (23035844800)","23035844800","Motion differences in goal kicking on natural and artificial soccer turf systems","2010","Footwear Science","2","1","","29","35","6","14","10.1080/19424280903535447","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79958742539&doi=10.1080%2f19424280903535447&partnerID=40&md5=99b4a491f6efd30ff20b38ba08cc14e3","German Sport University, Institute of Biomechanics and Orthopaedics, Cologne 50933, Am Sportpark Muengersdorf 6, Germany","Potthast W., German Sport University, Institute of Biomechanics and Orthopaedics, Cologne 50933, Am Sportpark Muengersdorf 6, Germany","Even though the importance of artificial soccer turf systems is increasing, the interaction of players with different surface systems during movements specific to soccer is not well understood. As the behaviour of the supporting leg might be crucial for the success of kicks at goal, the purpose of this study was to investigate the movement of the whole body and the supporting leg when kicking at goal on one type of natural turf and two different types of artificial soccer turf. Four synchronized high speed cameras were used to record the movements of 17 players when kicking at goal. The type of surface systems significantly influenced the kicking speed, accuracy, foot eversion of the supporting leg and player comportment during deceleration over the last step before ball contact. Difficulties in controlling the lower leg motion on one certain type of artificial turf might be the reason for variations and kicking performance. © 2010 Taylor & Francis.","Artificial turf; Biomechanics; Kicking; Movement control; Run up; Soccer","Biomechanics; High speed cameras; Artificial turfs; Kicking; Lower leg; Movement control; Run up; Surface systems; Whole body; Football","Andersson H., Ekblom B., Krustrup P., Elite football on artificial turf versus natural grass: Movement patterns, technical standards, and player impressions, Journal of Sports Sciences, 26, pp. 113-122, (2008); Barfield W.R., The biomechanics of kicking in soccer, Clinical Sports Medicine, 17, pp. 711-738, (1998); Eils E., Streyl M., A one year aging process of a soccer shoe does not increase plantar loading of the foot during soccer specific movements, Sportverletzung Sportschaden: Organ der Gesellschaft für Orthopädisch-Traumatologische Sportmedizin, 19, pp. 140-145, (2005); Eils E., Streyl M., Linnenbecker S., Thorwesten S., Volker S., Rosenbaum D., Characteristic plantar pressure distribution patterns during soccerspecific movements, The American Journal of Sports Medicine, 32, pp. 140-145, (2004); Ekstrand J., Timpka T., Hagglund M., Risk of injury in elite football played on artificial turf versus natural grass: A prospective two-cohort study, British Journal of Sports Medicine, 40, pp. 975-980, (2006); Technical Report, (2005); Technical Study 3, Turf Roots, pp. 31-36, (2008); Technical Study 4, Turf Roots, pp. 37-42, (2008); Fuller C.W., Dick R.W., Corlette J., Schmalz R., Comparison of the incidence, nature and cause of injuries sustained on grass and new generation artificial turf by male and female football players. Part 1: Match injuries, British Journal of Sports Medicine, 41, SUPPL. 1, (2007); Fuller C.W., Dick W.R., Corlette J., Schmalz R., Comparison of the incidence, nature and cause of injuries sustained on grass and new generation artificial turf by male and female football players. Part 2: Training injuries, British Journal of Sports Medicine, 41, SUPPL. 1, (2007); Hof A.L., Gazendam M.G.J., Sinke W.E., The condition for dynamic stability, Journal of Biomechanics, 38, pp. 1-8, (2005); Kapandji I.A., Funktionelle Anatomie der Gelenke, (1985); Karamanidis K., Arampatzis A., Mademli L., Age-related deficit in dynamic stability control after forward falls is affected by muscle strength and tendon stiffness, Journal of Electromyography and Kinesiology, 18, pp. 980-989, (2008); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (1998); Meijer K., Dethmers J., Savelberg H., Willems P., Wijers B., The influence of third generation artificial soccer turf characteristics on ground reaction forces during running, Proceedings of the 24th Symposium on Biomechanics in Sports 2006, Salzburg, pp. 1-4, (2006); Norkin C., Joint structure & function, a comprehensive review, 2, (1992); Nunome H., Ikegami Y., The effect of hip linear motion on lower leg angular velocity during soccer instep kicking, Proceedings of the 24th Symposium on Biomechanics in Sports 2005, pp. 770-772, (2005); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preffered leg, Journal of Sport Science, 24, pp. 529-541, (2006); Nunome H., Lake M., Georgakis A., Stergioulas L., Impact phase kinematics of instep kicking in soccer, Journal of Sports Sciences, 24, pp. 11-22, (2006); Orloff H., Sumida B., Chow J., Habibi L., Fujino A., Kramer B., Ground reaction forces and kinematics of plant leg position during instep kicking in male and female collegiate soccer players, Sports Biomechanics, 7, pp. 238-247, (2008); Reinschmidt C., Stacoff A., Stuessi E., Heel movement within a court shoe, Medicine and Science in Sports and Exercise, 24, pp. 1390-1395, (1992); Stacoff A., Reinschmidt C., Stuessi E., The movement of the heel within a running shoe, Medicine and Science in Sports and Exercise, 24, pp. 695-701, (1992); Stacoff A., Steger J., Stussi E., Reinschmidt C., Lateral stability in sideward cutting movements, Medicine and Science in Sports and Exercise, 28, pp. 350-358, (1996); Steffen K., Andersen T.E., Bahr R., Risk of injury on artificial turf and natural grass in young female football players, British Journal of Sports Medicine, 41, SUPPL. 1, (2007); Sterzing T., Hennig E.M., The influence of soccer shoes on kicking velocity in full-instep kicks, Exercise and Sport Sciences Reviews, 36, pp. 91-97, (2008); Tillman B., Tondury G., Anatomie des Menschen, Bewegungsapparat, 1, 3, (1998); Tsaousidis N., Zatsiorsky V., Two types of ball-effector interaction and their relative contribution to soccer kicking, Human Movement Science, 15, pp. 861-876, (1996); Walden M., Hagglund M., Ekstrand J., UEFA Champions League study: A prospective study of injuries in professional football during the 2001-2002 season, British Journal of Sports Medicine, 39, pp. 542-546, (2005); Zatsiorsky V.M., Seluyanov V.N., Biomechanics VIII-B, pp. 1152-1159, (1983)","W. Potthast; German Sport University, Institute of Biomechanics and Orthopaedics, Cologne 50933, Am Sportpark Muengersdorf 6, Germany; email: potthast@dshs-koeln.de","","Taylor and Francis Ltd.","19424280","","","","English","Footwear Sci.","Article","Final","","Scopus","2-s2.0-79958742539" "Welch N.; Richter C.; Franklyn-Miller A.; Moran K.","Welch, Neil (56494661900); Richter, Chris (7202686489); Franklyn-Miller, Andy (22234102200); Moran, Kieran (16245608800)","56494661900; 7202686489; 22234102200; 16245608800","Principal component analysis of the biomechanical factors associated with performance during cutting","2021","Journal of Strength and Conditioning Research","35","6","","1715","1723","8","14","10.1519/JSC.0000000000003022","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107085141&doi=10.1519%2fJSC.0000000000003022&partnerID=40&md5=3c5c67b6ddde59ac7b2366e922d19105","Sports Medicine Department, Sports Surgery Clinic, Dublin, Ireland; School of Health and Human Performance, Dublin City University, Dublin, Ireland; INSIGHT Center for Data Analytics, Dublin, Ireland; Center for Health Exercise and Sports Medicine, University of Melbourne, Melbourne, Australia","Welch N., Sports Medicine Department, Sports Surgery Clinic, Dublin, Ireland, School of Health and Human Performance, Dublin City University, Dublin, Ireland, INSIGHT Center for Data Analytics, Dublin, Ireland; Richter C., Sports Medicine Department, Sports Surgery Clinic, Dublin, Ireland, School of Health and Human Performance, Dublin City University, Dublin, Ireland; Franklyn-Miller A., Sports Medicine Department, Sports Surgery Clinic, Dublin, Ireland, Center for Health Exercise and Sports Medicine, University of Melbourne, Melbourne, Australia; Moran K., School of Health and Human Performance, Dublin City University, Dublin, Ireland, INSIGHT Center for Data Analytics, Dublin, Ireland","The main aim of the current study was to investigate the relationship between kinematic variables in cutting and performance outcome across different angled cuts through the use of principal component analysis and permutation testing. Twenty-five male intercounty Gaelic football players (23.5 ± 4.2 years, 183 ± 6 cm, and 83 ± 6.9 kg) participated in the study. Three-dimensional motion capture was used to perform a biomechanical analysis of 110 and 458 cutting tasks. Principal component analysis and permutation testing revealed one principal component within the 45° cut (r = 0.26) and 2 principal components within the 110° (r = 0.66 and 0.27) cut that consistently correlated with performance outcome. Within the 45° cut, the identified principal component was interpreted as relating to performance cues of maintaining a low center of mass during the concentric phase, using a shorter ground contact time, resisting a reduction in lateral center of mass to ankle and knee distance in the eccentric phase, and using faster and larger extensions of the hip and knee. Within the 110° cut, the first identified principal component was interpreted as relating to performance cues of maintaining a low center of mass during the concentric phase, using a shorter ground contact time, resisting a reduction in lateral center of mass to ankle and knee distance in the eccentric phase, and resisting hip flexion then using hip extension. The second principal component was interpreted as relating to a performance cue of leaning in the direction of the cut. © 2019 National Strength and Conditioning Association","Biomechanics; Change of direction; Time","Biomechanical Phenomena; Humans; Knee Joint; Male; Movement; Principal Component Analysis; Soccer; biomechanics; human; knee; male; movement (physiology); principal component analysis; soccer","Bruce P, Bruce A., Practical Statistics for Data Scientists: 50 Essential Concepts, (2017); Charoenpanich N, Boonsinsukh R, Sirisup S, Saengsirisuwan V., Principal component analysis identifies major muscles recruited during elite vertical jump, Sci Asia, 39, pp. 257-264, (2013); Dos'Santos T, Thomas C, Jones PA, Comfort P., Mechanical determinants of faster change of direction speed performance in male athletes, J Strength Cond Res, 31, pp. 696-705, (2017); Dufek JS, Bates BT, Stergiou N, James CR., Interactive effects between group and single-subject response patterns, Hum Mov Sci, 14, pp. 301-323, (1995); Havens KL, Sigward SM., Cutting mechanics: Relation to performance and anterior cruciate ligament injury risk, Med Sci Sport Exerc, 47, pp. 818-824, (2015); Havens KL, Sigward SM., Whole body mechanics differ among running and cutting maneuvers in skilled athletes, Gait Posture, 42, pp. 240-245, (2015); Hewit JK, Cronin JB, Hume PA., Understanding change of direction performance: A technical analysis of a 1808 ground-based turn and sprint task, Int J Sports Sci Coach, 7, pp. 493-501, (2012); Hopkins WG, Marshall SW, Batterham AM, Hanin J., Progressive statistics for studies in sports medicine and exercise science, Med Sci Sports Exerc, 41, pp. 3-12, (2009); Jan Van Os B, Meulman JJ., Chapter 4: The Use of Permutation Tests in Linear Principal Components Analysis, Adaptive Tests of Significance Using Permutations of Residuals with R and SAS, pp. 85-109, (2012); Joliffe I., Properties of Population Principle Components, Principal Component Analysis and Factor Analysis, pp. 10-27, (1986); Kristianslund E, Krosshaug T, van den Bogert AJ., Artefacts in measuring joint moments may lead to incorrect clinical conclusions: The nexus between science (biomechanics) and sports injury prevention !, Br J Sports Med, 47, pp. 470-474, (2013); Marshall BM, Franklyn-Miller AD, King EA, Moran KA, Strike SC, Falvey EC., Biomechanical factors associated with time to complete a change of direction cutting maneuver, J Strength Cond Res, 28, pp. 2845-2851, (2014); Milovanovic I, Popovic DB., Principal component analysis of gait kinematics data in acute and chronic stroke patients, Comput Math Methods Med, 2012, (2012); Raisbeck LD, Diekfuss JA., Verbal cues and attentional focus: A simulated target- shooting experiment, J Mot Learn Dev, 5, pp. 148-159, (2017); Sasaki S, Nagano Y, Kaneko S, Sakurai T, Fukubayashi T., The relationship between performance and trunk movement during change of direction, J Sport Sci Med, 10, pp. 112-118, (2011); Shimokochi Y, Ide D, Kokubu M, Nakaoji T., Relationships among performance of lateral cutting maneuver from lateral sliding and hip extension and abduction motions, ground reaction force, and body center of mass height, J Strength Cond Res, 27, pp. 1851-1860, (2013); Singer RN., Strategies and metastrategies in learning and performing self-paced athletic skills, Sport Psychol, 2, pp. 49-68, (1988); Spiteri T, Mcintyre F, Specos C, Myszka S, Mastery M., Cognitive training for agility: The integration between perception and action, Strength Cond J, 40, pp. 1-8, (2017); Thorpe MG, Milte CM, Crawford D, McNaughton SA., A comparison of the dietary patterns derived by principal component analysis and cluster analysis in older Australians, Int J Behav Nutr Phys Act, 13, pp. 30-14, (2016); Winter DA., Three Dimensional Kinematics and Kinetics, Biomechanics and Motor Control of Human Movement, pp. 176-199, (2009); Young WB, James R, Montgomery I., Is muscle power related to running speed with changed of direction ?, J Sports Med Phys Fitness, 42, pp. 282-288, (2002)","N. Welch; Sports Medicine Department, Sports Surgery Clinic, Dublin, Ireland; email: neilwelch@sportssurgeryclinic.com","","NSCA National Strength and Conditioning Association","10648011","","","30664108","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-85107085141" "Harry J.R.; Barker L.A.; James R.; Dufek J.S.","Harry, John R. (56669467000); Barker, Leland A. (57193807689); James, Roger (57192747845); Dufek, Janet S. (16149974600)","56669467000; 57193807689; 57192747845; 16149974600","Performance differences among skilled soccer players of different playing positions during vertical jumping and landing","2018","Journal of Strength and Conditioning Research","32","2","","304","312","8","14","10.1519/JSC.0000000000002343","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85049289241&doi=10.1519%2fJSC.0000000000002343&partnerID=40&md5=9afd928959800e59699b30c4827d9ccc","Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX, United States; Department of Kinesiology and Nutrition Sciences, University of Nevada, Las Vegas, NV, United States; Center for Rehabilitation Research, Texas Tech University Health Sciences Center, Lubbock, TX, United States","Harry J.R., Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX, United States; Barker L.A., Department of Kinesiology and Nutrition Sciences, University of Nevada, Las Vegas, NV, United States; James R., Center for Rehabilitation Research, Texas Tech University Health Sciences Center, Lubbock, TX, United States; Dufek J.S., Department of Kinesiology and Nutrition Sciences, University of Nevada, Las Vegas, NV, United States","Both jumping and landing performance of skilled soccer players is diminished when task demands are increased. However, it is unclear if performance changes are specific to players of certain playing positions. Therefore, we assessed jumping and landing performance among skilled soccer players of different playing positions. Twenty-five National Collegiate Athletic Association (NCAA) Division 1 male soccer players (179.5 ± 7.8 cm, 75.5 ± 7.1 kg, 19.7 ± 1.2 years) performed maximum effort vertical jump landings (VJLs), whereas vertical ground reaction force (vGRF) data were obtained. Participants were stratified into goalkeeping (GK), defensive (DEF), midfield (MID), and attacking (ATT) group according to their primary playing position. One-way analyses of variance (a = 0.05) and effect sizes (ESs; large ≥ 0.80) were used to compare differences among groups. The jumping phase variables evaluated were jump height, unloading and amortization vGRF magnitudes, eccentric rate of force development, and the reactive strength index. Landing phase variables included the peak vGRF magnitude, vGRF loading rate, vGRF attenuation rate, and landing time. No statistically significant differences were detected for any jumping or landing variable (p ≥ 0.05). However, a number of large magnitude differences were detected during landing after ES calculations. Specifically, greater peak vGRF magnitudes were detected in DEF vs. both MID (ES = 1.08) and ATT (ES = 0.93), a greater vGRF loading rate occurred in DEF vs. MID (ES = 0.93), and a greater vGRF attenuation rate occurred in DEF vs. both MID (ES = 1.00) and AT (ES = 0.80). It is concluded that highly skilled soccer players possess position-specific abilities with respect to the landing phase of VJL. Skilled soccer players might experience enhanced training outcomes after VJL training regimens tailored to the specific demands of their primary playing position. © 2017 National Strength and Conditioning Association.","Biomechanics; Force attenuation; Force production; Injury risk; Kinetics","Adolescent; Athletic Performance; Exercise Test; Humans; Male; Soccer; Young Adult; adolescent; athletic performance; exercise test; human; male; physiology; soccer; young adult","Barker L.A., Harry J.R., Dufek J.S., Mercer J.A., Aerial rotation effects of vertical jump performance among highly skilled collegiate soccer players, J Strength Cond Res, 31, pp. 932-938, (2017); Barker L.A., Harry J.R., Mercer J.A., Relationships between countermovement jump ground reaction forces and jump height, reactive strength index, and jump time, J Strength Cond Res, (2017); Bobbert M.F., Gerritsen K.G., Litjens M.C., Van Soest A.J., Why is countermovement jump height greater than squat jump height?, Med Sci Sports Exerc, 28, pp. 1402-1412, (1996); Bressel E., Cronin J., The landing phase of a jump: Strategies to minimize injuries, JOPERD, 76, pp. 30-47, (2005); Chaouachi A., Castagna C., Chtara M., Brughelli M., Turki O., Galy O., Chamari K., Behm D.G., Effect of warm-ups involving static or dynamic stretching on agility, sprinting, and jumping performance in trained individuals, J Strength Cond Res, 24, pp. 2001-2011, (2010); Cohen J., A power primer, Psychol Bull, 112, pp. 155-159, (1992); Cormie P., McGuigan M.R., Newton R.U., Changes in the eccentric phase contribute to improved stretch-shorten cycle performance after training, Med Sci Sports Exerc, 42, pp. 1731-1744, (2010); Cronin J.B., Hansen K.T., Strength and power predictors of sports speed, J Strength Cond Res, 19, pp. 349-357, (2005); Dufek J.S., Bates B.T., Biomechanical factors associated with injury during landing in jump sports, Sports Med, 12, pp. 326-337, (1991); Hamill J., Knutzen K.M., Derrick T.R., Biomechanical Basis of Human Movement, (2015); Harry J.R., Barker L.A., Eggleston J.D., Dufek J.S., Evaluating performance during maximum effort vertical jump landings, J Appl Biomech, (2017); Harry J.R., Barker L.A., Mercer J.A., Dufek J.S., Vertical and horizontal impact force comparison during jump-landings with and without rotation in NCAA Division 1 male soccer players, J Strength Cond Res, 31, pp. 1780-1786, (2017); Harry J.R., Freedman Silvernail J., Mercer J.A., Dufek J.S., A bilateral comparison of vertical jump landings and step-off landings from equal heights, J Strength Cond Res, (2017); Hunt M., Fulford S., Amateur soccer: Injuries in relation to field position, Br J Sports Med, 24, (1990); James C.R., Dufek J.S., Bates B.T., Effects of injury proneness and task difficulty on joint kinetic variability, Med Sci Sports Exerc, 32, pp. 1833-1844, (2000); Judelson D.A., Maresh C.M., Farrell M.J., Yamamoto L.M., Armstrong L.E., Kraemer W.J., Volek J.S., Spiering B.A., Casa D.J., Anderson J.M., Effect of hydration state on strength, power, and resistance exercise performance, Med Sci Sports Exerc, 39, pp. 1817-1844, (2007); Lees A., Vanrenterghem J., De Clercq D., Understanding how an arm swing enhances performance in the vertical jump, J Biomech, 37, pp. 1929-1940, (2004); Loturco I., Pereira L.A., Cal Abad C.C., D'Angelo R.A., Fernandes V., Kitamura K., Kobal R., Nakamura F.Y., Vertical and horizontal jump tests are strongly associated with competitive performance in 100-m dash events, J Strength Cond Res, 29, pp. 1966-1971, (2015); Manolopoulos K., Gissis I., Galazoulas C., Manolopoulos E., Patikas D., Gollhofer A., Kotzamanidis C., Effect of combined sensorimotor-resistance training on strength, balance, and jumping performance of soccer players, J Strength Cond Res, 30, pp. 53-59, (2016); Maulder P., Cronin J., Horizontal and vertical jump assessment: Reliability, symmetry, discriminative and predictive ability, Phys Ther Sport, 6, pp. 74-82, (2005); McNitt-Gray J.L., Kinetics of the lower extremities during drop landings from three heights, J Biomech, 26, pp. 1037-1046, (1993); Meylan C., McMaster T., Cronin J., Mohammad N.I., Rogers C., Deklerk M., Single-leg lateral, horizontal, and vertical jump assessment: Reliability, interrelationships, and ability to predict sprint and change-of-direction performance, J Strength Cond Res, 23, pp. 1140-1147, (2009); Meylan C.M., Nosaka K., Green J., Cronin J.B., Temporal and kinetic analysis of unilateral jumping in the vertical, horizontal, and lateral directions, J Sports Sci, 28, pp. 545-554, (2010); Nigg B.M., Bobbert M., On the potential of various approaches in load analysis to reduce the frequency of sports injuries, J Biomech, 23, pp. 3-12, (1990); Nuzzo J.L., McBride J.M., Cormie P., McCaulley G.O., Relationship between countermovement jump performance and multijoint isometric and dynamic tests of strength, J Strength Cond Res, 22, pp. 699-707, (2008); Radin E.L., Paul I.L., Response of joints to impact loading. I. In vitro wear, Arthritis Rheum, 14, pp. 356-362, (1971); Reilly T., Bangsbo J., Franks A., Anthropometric and physiological predispositions for elite soccer, J Sports Sci, 18, pp. 669-683, (2000); Rowley K.M., Richards J.G., Increasing plantarflexion angle during landing reduces vertical ground reaction forces, loading rates and the hip's contribution to support moment within participants, J Sports Sci, 33, pp. 1922-1932, (2015); Sporis G., Jukic I., Ostojic S.M., Milanovic D., Fitness profiling in soccer: Physical and physiologic characteristics of elite players, J Strength Cond Res, 23, pp. 1947-1953, (2009); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer, Sports Med, 35, pp. 501-536, (2005); Sullivan G.M., Feinn R., Using effect size-or why the P value is not enough, J Grad Med Educ, 4, pp. 279-282, (2012); Turner A.N., Stewart P.F., Strength and conditioning for soccer players, Strength Cond J, 36, pp. 1-13, (2014); Vanezis A., Lees A., A biomechanical analysis of good and poor performers of the vertical jump, Ergonomics, 48, pp. 1594-1603, (2005); Vincent W., Weir J., Statistics in Kinesiology, (2012); Wallmann H.W., Mercer J.A., Landers M.R., Surface electromyographic assessment of the effect of dynamic activity and dynamic activity with static stretching of the gastrocnemius on vertical jump performance, J Strength Cond Res, 22, pp. 787-793, (2008); Zhang S.N., Bates B.T., Dufek J.S., Contributions of lower extremity joints to energy dissipation during landings, Med Sci Sports Exerc, 32, pp. 812-819, (2000)","J.R. Harry; Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, United States; email: john.harry@ttu.edu","","NSCA National Strength and Conditioning Association","10648011","","","29369951","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-85049289241" "Cecchi N.J.; Monroe D.C.; Moscoso W.X.; Hicks J.W.; Reinkensmeyer D.J.","Cecchi, Nicholas J. (57208708991); Monroe, Derek C. (26032235300); Moscoso, Wyatt X. (57218698974); Hicks, James W. (7202879563); Reinkensmeyer, David J. (35584786200)","57208708991; 26032235300; 57218698974; 7202879563; 35584786200","Effects of soccer ball inflation pressure and velocity on peak linear and rotational accelerations of ball-to-head impacts","2020","Sports Engineering","23","1","16","","","","11","10.1007/s12283-020-00331-0","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85090087249&doi=10.1007%2fs12283-020-00331-0&partnerID=40&md5=83a172774b07996eedc55fe4fe7d4e95","Impact Sports Company, LLC, Anaheim, CA, United States; Department of Mechanical and Aerospace Engineering, University of California, Irvine, Irvine, CA, United States; Department of Neurology, University of California, Irvine, Irvine, CA, United States; Department of Ecology and Evolutionary Biology, University of California, Irvine, Irvine, 92697, CA, United States","Cecchi N.J., Impact Sports Company, LLC, Anaheim, CA, United States, Department of Mechanical and Aerospace Engineering, University of California, Irvine, Irvine, CA, United States; Monroe D.C., Department of Neurology, University of California, Irvine, Irvine, CA, United States; Moscoso W.X., Department of Mechanical and Aerospace Engineering, University of California, Irvine, Irvine, CA, United States; Hicks J.W., Department of Ecology and Evolutionary Biology, University of California, Irvine, Irvine, 92697, CA, United States; Reinkensmeyer D.J., Department of Mechanical and Aerospace Engineering, University of California, Irvine, Irvine, CA, United States","Exposure to head impacts is common in soccer and, in some cases, has been associated with neurocognitive and physiological consequences in soccer players. Ball-to-head impacts are particularly frequent, as soccer players regularly use their heads to pass, clear, and shoot the ball during game play and practice. The attenuation of head accelerations resulting from impact is of interest to promoting athlete brain health and numerical models have suggested that reducing soccer ball inflation pressure can lower head accelerations from ball-to-head impacts. The present study sought to test the effect of ball inflation pressure on peak linear acceleration and peak rotational acceleration of the head in a biomechanical reconstruction of ball-to-head impacts using an anthropomorphic testing device head and neck. Adult-sized soccer balls were inflated to five different pressures (34, 48, 55, 62, and 76 kPa), a range that spanned the lower bound on inflation pressure regulated by Fédération Internationale de Football Association and the National Collegiate Athletic Association (60 kPa). Balls were then thrown via a ball launcher at the forehead of the anthropomorphic testing device at three different velocities (17.3, 19.7, and 22.2 m/s). Repeated-measures analyses of variance, with pressure and velocity as repeated measures, revealed an increase in peak linear acceleration (p = 0.001) and peak rotational acceleration (p = 0.002) with higher ball velocities, and a decrease in peak linear acceleration (p < 0.001) and peak rotational acceleration (p < 0.001) with lower ball pressures. Consistent with previous numerical models, the results of this study suggest that reducing soccer ball inflation pressure may reduce head accelerations of ball-to-head impacts. © 2020, International Sports Engineering Association.","Biomechanics; Concussion; Football; Head acceleration; Head impact kinematics; Header","Football; Numerical models; Sporting goods; Velocity; Different pressures; Head accelerations; Head and neck; Inflation pressures; Linear accelerations; Repeated measures; Rotational acceleration; Testing device; Acceleration","Caccese J.B., Kaminski T.W., Minimizing head acceleration in soccer: a review of the literature, Sports Med, 46, 11, pp. 1591-1604, (2016); Lamond L.C., Caccese J.B., Buckley T.A., Glutting J., Kaminski T.W., Linear acceleration in direct head contact across impact type, player position, and playing scenario in collegiate women's soccer players, J Athl Train, 53, 2, pp. 115-121, (2018); King A.I., Yang K.H., Zhang L., Hardy W., Viano D.C., Is Head Injury Caused by Linear Or Angular Acceleration?, (2003); Caccese J.B., Lamond L.C., Buckley T.A., Kaminski T.W., Reducing purposeful headers from goal kicks and punts may reduce cumulative exposure to head acceleration, Res Sports Med, 24, 4, pp. 407-415, (2016); Harriss A., Johnson A.M., Walton D.M., Dickey J.P., Head impact magnitudes that occur from purposeful soccer heading depend on the game scenario and head impact location, Musculoskelet Sci Pract, 40, pp. 53-57, (2019); Lipton M.L., Kim N., Zimmerman M.E., Kim M., Stewart W.F., Branch C.A., Lipton R.B., Soccer heading is associated with white matter microstructural and cognitive abnormalities, Radiology, 268, 3, pp. 850-857, (2013); Matser J.T., Kessels A.G., Lezak M.D., Troost J., A dose-response relation of headers and concussions with cognitive impairment in professional soccer players, J Clin Exp Neuropsychol, 23, 6, pp. 770-774, (2001); Moore R.D., Lepine J., Ellemberg D., The independent influence of concussive and sub-concussive impacts on soccer players' neurophysiological and neuropsychological function, Int J Psychophysiol, 112, pp. 22-30, (2017); Zhang M.R., Red S.D., Lin A.H., Patel S.S., Sereno A.B., Evidence of cognitive dysfunction after soccer playing with ball heading using a novel tablet-based approach, PLoS ONE, 8, 2, (2013); Mainwaring L., Pennock K.M., Mylabathula S., Alavie B.Z., Subconcussive head impacts in sport: a systematic review of the evidence, Int J Psychophysiol, 132, pp. 39-54, (2018); Naunheim R.S., Ryden A., Standeven J., Genin G., Lewis L., Thompson P., Bayly P., Does soccer headgear attenuate the impact when heading a soccer ball?, Acad Emerg Med, 10, 1, pp. 85-90, (2003); Caccese J.B., Buckley T.A., Tierney R.T., Arbogast K.B., Rose W.C., Glutting J.J., Kaminski T.W., Head and neck size and neck strength predict linear and rotational acceleration during purposeful soccer heading, Sports Biomech, 17, 4, pp. 462-476, (2018); Babbs C.F., Biomechanics of heading a soccer ball: implications for player safety, Sci World J, 1, pp. 281-322, (2001); Shewchenko N., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football. Part 3: effect of ball properties on head response, Br J sports Med, 39, pp. i33-i39, (2005); Cecchi N.J., Oros T.J., Monroe D.C., Fote G.M., Moscoso W.X., Hicks J.W., Reinkensmeyer D.J., The effectiveness of protective headgear in attenuating ball-to-forehead impacts in water polo, Front Sports Active Living, 1, (2019); McCuen E., Svaldi D., Breedlove K., Kraz N., Cummiskey B., Breedlove E.L., Traver J., Desmond K.F., Hannemann R.E., Zanath E., Guerra A., Collegiate women's soccer players suffer greater cumulative head impacts than their high school counterparts, J Biomech, 48, 13, pp. 3720-3723, (2015); Queen R.M., Weinhold P.S., Kirkendall D.T., Yu B., Theoretical study of the effect of ball properties on impact force in soccer heading, Med Sci Sports Exerc, 35, 12, pp. 2069-2076, (2003); Hanlon E.M., Bir C.A., Real-time head acceleration measurement in girls’ youth soccer, Med Sci Sports Exerc, 44, 6, pp. 1102-1108, (2012); Lees A., Nolan L., The biomechanics of soccer: a review, J Sports Sci, 16, 3, pp. 211-234, (1998); Cecchi N.J., Monroe D.C., Oros T.J., Small S.L., Hicks J.W., Laboratory evaluation of a wearable head impact sensor for use in water polo and land sports, Proc Inst Mech Eng Part P J Sports Eng Technol, 234, 2, pp. 162-169, (2020); de Grau S., Post A., Meehan A., Champoux L., Hoshizaki T.B., Gilchrist M.D., Protective capacity of ice hockey helmets at different levels of striking compliance, Sports Eng, 23, (2020); Withnall C., Shewchenko N., Wonnacott M., Dvorak J., Effectiveness of headgear in football, Br J Sports Med, 39, pp. i40-i48, (2005); Dunn M., Davies D., Hart J., Effect of football size and mass in youth football head impacts, Proceedings, 49, (2020)","J.W. Hicks; Department of Ecology and Evolutionary Biology, University of California, Irvine, Irvine, 92697, United States; email: jhicks@uci.edu","","Springer","13697072","","","","English","Sports Eng.","Article","Final","","Scopus","2-s2.0-85090087249" "Charalambous L.; von Lieres und Wilkau H.C.; Potthast W.; Irwin G.","Charalambous, Laura (54784054800); von Lieres und Wilkau, Hans Christian (57191955626); Potthast, Wolfgang (23035844800); Irwin, Gareth (8894962800)","54784054800; 57191955626; 23035844800; 8894962800","The effects of artificial surface temperature on mechanical properties and player kinematics during landing and acceleration","2016","Journal of Sport and Health Science","5","3","","355","360","5","13","10.1016/j.jshs.2015.01.013","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84995459553&doi=10.1016%2fj.jshs.2015.01.013&partnerID=40&md5=acfdc1af55b68ee37cf0c3e4010d223a","Department of Sport Science and Physical Activity, University of Bedfordshire, Bedford, MK41 9EA, United Kingdom; Cardiff School of Sport, Cardiff Metropolitan University, Cardiff, CF23 6XD, United Kingdom; Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, 50933, Germany","Charalambous L., Department of Sport Science and Physical Activity, University of Bedfordshire, Bedford, MK41 9EA, United Kingdom; von Lieres und Wilkau H.C., Cardiff School of Sport, Cardiff Metropolitan University, Cardiff, CF23 6XD, United Kingdom; Potthast W., Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, 50933, Germany; Irwin G., Cardiff School of Sport, Cardiff Metropolitan University, Cardiff, CF23 6XD, United Kingdom","Background Artificial turf is considered a feasible global alternative to natural turf by many sports governing bodies. Consequently, its ability to provide a safe and consistent playing surface regardless of climate becomes essential. The aims of this study were to determine the effects of artificial surface temperature on: (1) mechanical properties of the turf and (2) the kinematics of a turf-sport related movement. Methods Two identical artificial turf pitches were tested: one with a cold surface temperature (1.8°C–2.4°C) and one with a warm surface temperature (14.5°C–15.2°C). Mechanical testing was performed to measure the surface properties. Four amateur soccer players performed a hurdle jump to sprint acceleration movement, with data (contact time, step length and hip, knee and ankle kinematics) collected using CODASport (200 Hz). Results The temperature difference had a significant influence on the mechanical properties of the artificial turf, including force absorption, energy restitution, rotational resistance, and the height where the head injury criterion was met. Both step length (p = 0.008) and contact time (p = 0.002) of the initial step after the landing were significantly longer on the warm surface. In addition, significant range of motion and joint angular velocity differences were found. Conclusion These findings highlight different demands placed on players due to the surface temperature and suggest a need for coaches, practitioners, and sports governing bodies to be aware of these differences. © 2016","Artificial turf; Biomechanics; Rugby; Soccer; Temperature","acceleration; Article; artificial surface temperature; cold; heat; hip; jumping; kinematics; knee; mechanics; motion; priority journal; running; soccer; temperature","Fleming P., Artificial turf systems for sports surfaces: current knowledge and research needs, Proc Inst Mech Eng Part P: J Sports Eng Technol, 225, pp. 43-64, (2011); Andersson H., Ekblom B., Krustrup P., Elite football on artificial turf versus natural grass: movement patterns, technical standards, and player impressions, J Sports Sci, 26, pp. 113-122, (2008); Ekstrand J., Timpka T., Hagglund M., Risk of injury in elite football played on artificial turf versus natural grass: a prospective two-cohort study, Br J Sports Med, 40, pp. 975-980, (2006); Fuller C.W., Dick R.W., Corlette J., Schmalz R., Comparison of the incidence, nature and cause of injuries sustained on grass and new generation artificial turf by male and female football players. Part 1: match injuries, Br J Sports Med, 41, pp. i20-6, (2007); Steffen K., Andersen T.E., Bahr R., Risk of injury on artificial turf and natural grass in young female footballers, Br J Sports Med, 41, pp. i33-7, (2007); World Rugby, Regulation 22, standard relating to the use of artificial rugby turf, (2008); Quality concept for football turf, (2009); Meijer K., Dethmers J., Savelberg H.C.M., Willems P., Wijers B., The influence of third generation artificial soccer turf characteristics on ground reaction forces during running, (2006); Nigg B.M., Yeadon M.R., Biomechanical aspects of playing surfaces, J Sports Sci, 5, pp. 117-145, (1987); Nigg B.M., The validity and relevance of tests used for the assessment of sports surfaces, Med Sci Sports Exerc, 22, pp. 131-139, (1990); Dixon S.J., Batt M.E., Collop A.C., Artificial playing surfaces research: a review of medical, engineering and biomechanical aspects, Int J Sports Med, 20, pp. 209-218, (1999); Williams C.F., Pulley G.E., Synthetic surface heat studies, (2003); Torg J.S., Stilwell G., Rogers K., The effect of ambient temperature on the shoe-surface interface release coefficient, Am J Sports Med, 24, pp. 79-82, (1996); Potthast W., Verhelst R., Hughes M., Stone K., De Clercq D., Football-specific evaluation of player–surface interaction on different football turf systems, Sports Tech, 3, pp. 5-12, (2010); Pedroza A., Fernandez S., Heidt R.J., Kaeding C., Evaluation of the shoe–surface interaction using an agility maneuver, Med Sci Sports Exerc, 42, pp. 1754-1759, (2010); Stiles V.H., Dixon S.J., Guisasola I.N., James I.T., Biomechanical response to variations in natural turf surfaces during running and turning, J Appl Biomech, 27, pp. 54-63, (2011); Dura J.V., Hoyoa J.V., Martinez A., Lozano L., The influence of friction on sports surfaces in turning movements, Sports Eng, 2, pp. 97-102, (1999); McMahon T.A., Greene P.R., The influence of track compliance on running, J Biomech, 12, pp. 893-904, (1979); Kerdok A.E., Biewener A.A., McMahon T.A., Weyand P.G., Herr H.M., Energetics and mechanics of human running on surfaces of different stiffnesses, J Appl Physiol, 92, pp. 469-478, (2002); Stafilidis S., Arampatzis A., Muscle-tendon unit mechanical and morphological properties and sprint performance, J Sports Sci, 25, pp. 1035-1046, (2007); Farley C.T., Houdijk H.H., Strien C.V., Louie M., Mechanism of leg stiffness adjustment for hopping on surfaces of different stiffnesses, J Appl Physiol, 85, pp. 1044-1055, (1998); Ferris D.P., Liang K., Farley C.T., Runners adjust leg stiffness for their first step on a new running surface, J Biomech, 32, pp. 787-794, (1999); Dixon S.J., Collop A.C., Batt M.E., Compensatory adjustments in lower extremity kinematics in response to a reduced cushioning of the impact interface in heel–toe running, Sports Eng, 8, pp. 47-55, (2005); Bezodis I.N., Thomson A., Gittoes M.J.R., Kerwin D.G., Identification of instants of touchdown and take-off in sprint running using an automated motion analysis system, (2007); Winter D.A., Biomechanics and motor control of human movement, (2009); Ast S., Kogel J., Reh J., Lieres und Wilkau H.C., Charalambous L., Irwin G., Identification of touchdown and toe-off in turf-sport specific movements using kinematic data, (2013); Hunter J.P., Marshall R.N., McNair P.J., Interaction of step length and step rate during sprint running, Med Sci Sports Exerc, 36, pp. 261-271, (2004); Murphy A.J., Lockie R.G., Coutts A.J., Kinematic determinants of early acceleration in field sport athletes, J Sports Sci Med, 2, pp. 144-150, (2003); Hewitt T.E., Ford K.R., Hoogenboom B.J., Myer G.D., Understanding and preventing ACL injuries: current biomechanical and epidemiologic considerations–update 2010, N Am J Sports Phys Ther, 5, pp. 234-251, (2010)","L. Charalambous; Department of Sport Science and Physical Activity, University of Bedfordshire, Bedford, MK41 9EA, United Kingdom; email: laura.charalambous@beds.ac.uk","","Elsevier B.V.","20952546","","","","English","J. Sport Health Sci.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-84995459553" "Reed W.F.; Feldman K.W.; Weiss A.H.; Tencer A.F.","Reed, William F. (7201846426); Feldman, Kenneth W. (35557673000); Weiss, Avery H. (7402248065); Tencer, Alan F. (7005320596)","7201846426; 35557673000; 7402248065; 7005320596","Does soccer ball heading cause retinal bleeding?","2002","Archives of Pediatrics and Adolescent Medicine","156","4","","337","340","3","12","10.1001/archpedi.156.4.337","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036203848&doi=10.1001%2farchpedi.156.4.337&partnerID=40&md5=692a8d5af9c1e02aedbb754b1fb1f83e","School of Medicine, University of Washington, United States; Department of Pediatrics, University of Washington, United States; Department of Ophthalmology, University of Washington, United States; Department of Orthopedics, University of Washington, United States; Department of Sports Medicine, University of Washington, United States; Children's Hospital, Regional Medical Center, Seattle, United States; Harborview Injury Prevention Center, Seattle, United States; Sacred Heart Hospital, Internal Medicine Residency Program, Spokane, WA, United States","Reed W.F., School of Medicine, University of Washington, United States, Sacred Heart Hospital, Internal Medicine Residency Program, Spokane, WA, United States; Feldman K.W., School of Medicine, University of Washington, United States, Department of Pediatrics, University of Washington, United States, Children's Hospital, Regional Medical Center, Seattle, United States; Weiss A.H., School of Medicine, University of Washington, United States, Department of Ophthalmology, University of Washington, United States, Children's Hospital, Regional Medical Center, Seattle, United States; Tencer A.F., School of Medicine, University of Washington, United States, Department of Orthopedics, University of Washington, United States, Department of Sports Medicine, University of Washington, United States, Harborview Injury Prevention Center, Seattle, United States","Objectives: To define forces of youth soccer ball heading (headers) and determine whether heading causes retinal hemorrhage. Setting: Regional Children's Hospital, youth soccer camp. Patients: Male and female soccer players, 13 to 16 years old, who regularly head soccer balls. Measurements: Dilated retinal examination, after 2-week header diary, and accelerometer measurement of heading a lofted soccer ball. Results: Twenty-one youth soccer players, averaging 79 headers in the prior 2 weeks, and 3 players who did not submit header diaries lacked retinal hemorrhage. Thirty control subjects also lacked retinal hemorrhage. Seven subjects heading the ball experienced linear cranial accelerations of 3.7±1.3g. Rotational accelerations were negligible. Conclusions: Headers, not associated with globe impact, are unlikely to cause retinal hemorrhage. Correctly executed headers did not cause significant rotational acceleration of the head, but incorrectly executed headers might.","","accelerometer; adolescent; article; biomechanics; clinical article; controlled study; female; human; male; priority journal; retina examination; retina hemorrhage; sport","Injuries in youth soccer: A subject review, Pediatrics, 105, pp. 659-661, (2000); Orlando R.G., Soccer-related eye injuries in children and adolescents, Physician Sports Med, 16, pp. 103-106, (1988); Duhaime A.C., Gennarelli T.A., Thibault L.E., Bruce D.A., Margulies S.S., Wiser R., The shaken baby syndrome: A clinical, pathological, and biomechanical study, J Neurosurg, 66, pp. 409-415, (1987); Alexander R., Sato Y., Smith W., Bennett T., Incidence of impact trauma with cranial injuries ascribed to shaking, AJDC, 144, pp. 724-726, (1990); Alexander R., Head trauma: Forensic pediatric approaches, San Diego Conference on Responding to Child Maltreatment, (1997); Levin A.V., Retinal hemorrhages and child abuse, Recent Adv Paediatr, 18, pp. 151-219, (2000); Ommaya A.K., Hirsch A.E., Tolerances for cerebral concussion from head impact and whiplash in primates, J Biomech, 4, pp. 13-21, (1971); Sebag J., Age-related differences in the human vitreoretinal interface, Arch Ophthalmol, 109, pp. 966-971, (1991); Mawdsley H., A biomechanical analysis of headers, Momentum, 3, pp. 30-40, (1978); Schneider K., Zernicke R.F., Computer simulation of head impact: Estimation of head injury risk during soccer heading, Int J Sports Biomech, 4, pp. 358-371, (1988); Anzil F., The football player's jumping abilities and head playing, International Congress on Sports Medicine Applied to Football, pp. 643-652, (1979); Burslem I., Lees A., Quantification of impact accelerations of the head during the heading of a football, Science and Football, pp. 243-248, (1988); Townsend M., Is heading the ball a dangerous activity?, Science and Football, pp. 237-242, (1988); Margulis S.S., Thibault L.E., A proposed tolerance criteria for diffuse axonal injury in man, J Biomech, 25, pp. 917-923, (1992); Hogan M.J., The vitreous, its structure, and relation to the ciliary body and retina, Invest Ophthalmol, 2, pp. 418-444, (1963); Harley J.A., If nothing goes wrong, is everything all right? interpreting zero numbers, JAMA, 249, pp. 1743-1745, (1983)","K.W. Feldman; Seattle, WA 98122, 2101 E Yesler Way, United States; email: kfeldman@u.washington.edu","","American Medical Association","10724710","","APAME","","English","Arch. Pediatr. Adolesc. Med.","Article","Final","","Scopus","2-s2.0-0036203848" "Langhout R.; Weber M.; Tak I.; Lenssen T.","Langhout, Rob (55311330400); Weber, Marvin (57190281500); Tak, Igor (55889523500); Lenssen, Ton (24314690700)","55311330400; 57190281500; 55889523500; 24314690700","Timing characteristics of body segments during the maximal instep kick in experienced football players","2016","Journal of Sports Medicine and Physical Fitness","56","7-8","","849","856","7","12","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978796177&partnerID=40&md5=647d939d8116d3810aaff6e8c96eb79b","Physiotherapy Dukenburg Nijmegen, Aldenhof 7003, Nijmegen, 6537 DZ, Netherlands; Master Musculoskeletal Therapy (SOMT), Amersfoort, Netherlands; Dutch Institute for Allied Health Care (NPi), Master of Physical Therapy in Sports, Amersfoort, Netherlands; Human Movement Sciences, Maastricht University, Maastricht, Netherlands; Physiotherapy Utrecht Oost, Utrecht, Netherlands; Academic Medical Centre Amsterdam, Department of Orthopaedics and Sports Traumatology, Amsterdam, Netherlands; Maastricht University Medical Centre, Department of Physical Therapy, Maastricht, Netherlands","Langhout R., Physiotherapy Dukenburg Nijmegen, Aldenhof 7003, Nijmegen, 6537 DZ, Netherlands, Master Musculoskeletal Therapy (SOMT), Amersfoort, Netherlands, Dutch Institute for Allied Health Care (NPi), Master of Physical Therapy in Sports, Amersfoort, Netherlands; Weber M., Human Movement Sciences, Maastricht University, Maastricht, Netherlands; Tak I., Dutch Institute for Allied Health Care (NPi), Master of Physical Therapy in Sports, Amersfoort, Netherlands, Physiotherapy Utrecht Oost, Utrecht, Netherlands, Academic Medical Centre Amsterdam, Department of Orthopaedics and Sports Traumatology, Amsterdam, Netherlands; Lenssen T., Maastricht University Medical Centre, Department of Physical Therapy, Maastricht, Netherlands","BACKGROUND: The first aim of this study was to describe duration and relative timing of the phases of the maximal instep kick. The second aim was to describe the concurrence of maximal range of motion, maximal angular acceleration, maximal angular deceleration and maximal angular velocity of body segments with four key points. METHODS: Twenty experienced football players performed three maximal instep kicks. The kicks were analysed using a full body, threedimensional motion capture system. Camera recordings determined kicking leg events. The concurrence of peak kinematics of body segments with four key points was calculated. RESULTS: Duration and timing of five phases were identified. Key point maximal hip extension (51.4±5.0%) concurred significantly with maximal range of motion (ROM) of shoulder extension. Key point maximal knee flexion (63.6±5.2%) concurred significantly with maximal angular acceleration of spine flexion and pelvis posterior tilt. Key point knee flexion 90 degrees (69.3±4.9%) concurred significantly with maximal angular velocity of shoulder flexion and spine flexion, maximal angular deceleration of hip flexion and maximal angular acceleration of knee extension. Key point ball impact (75.2±5.2%) concurred significantly with maximal ROM of hip deflexion and pelvis anterior rotation and with maximal angular deceleration of spine flexion and pelvis anterior rotation. CONCLUSIONS: This study demonstrated that eleven peak kinematics of upper body and kicking leg segments, significantly concurred with four kicking leg positions. These results provide Key points for kicking coordination and stress the importance of dynamical coupling as a kicking mechanism. © 2015 EDIZIONI MINERVA MEDICA.","Biomechanical phenomena; Energy transfer; Martial arts","Acceleration; Adolescent; Biomechanical Phenomena; Humans; Lower Extremity; Male; Motor Skills; Pelvis; Range of Motion, Articular; Rotation; Shoulder; Soccer; Spine; Time and Motion Studies; Time Factors; Young Adult; biomechanics; coordination; deceleration; energy transfer; football; hip; human; human experiment; kinematics; knee function; martial art; pelvis; range of motion; rotation; shoulder; spine; stress; acceleration; adolescent; biomechanics; joint characteristics and functions; lower limb; male; motor performance; physiology; soccer; task performance; time factor; young adult","Juarez D., Mallo J., De Subijana C., Navarro E., Kinematic analysis of kicking in young top-class soccer players, J Sports Med Phys Fitness, 51, pp. 366-373, (2011); Lees A., Nolan L., Biomechanics of soccer - A review, J Sports Sci, 16, pp. 211-234, (1998); Andersen T.B., Dorge H.C., Thomsen F.I., Collisions in soccer kicking, Sports Eng, 2, pp. 121-125, (2002); Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, J Sports Sci, 24, pp. 951-960, (2006); Asami T., Togashi H., Study on kicking in soccer, Japan J Phys Educ Hlth Sport Sci, 12, pp. 267-272, (1968); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and non-preferred leg, J Sports Sci, 20, pp. 293-299, (2002); Witt De J.K., Hinrichs R.N., Mechanical factors associated with the development of high ball velocity during an instep soccer kick, Sports Biomech, 11, pp. 282-290, (2012); Rahnama N., Reilly T., Lees A., Injury risk associated with playing actions during competitive soccer, Brit J Sport Med, 36, pp. 354-359, (2002); Verrall G., Slavotinek J., Fon G., Incidence of pubic bone marrow oedema in Australian rules football players: Relation to groin pain, Brit J Sport Med, 35, pp. 28-33, (2001); Brophy R.H., Backus S.I., Pansy B.S., Lyman S., Williams R.J., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, J Orthop Sports Phys Ther, 37, pp. 260-268, (2007); Naito K., Fukui Y., Maruyama T., Multijoint kinetic chain analysis of knee extension during the soccer instep kick, Hum Mov Sci, 29, pp. 259-276, (2010); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sport Biomech, 4, pp. 59-72, (2005); Shan G., Zhang X., From 2D leg kinematics to 3D full-body biomechanics - The past, present and future of scientific analysis of maximal instep kick in soccer, Sports Med Arthrosc Rehabil Ther Technol, 3, pp. 1-10, (2011); Glazier P.S., Davids K., Bartlett RM. Dynamical systems theory: A relevant framework for performance-oriented sports biomechanics research, Sportsci, 7, pp. 1-8, (2003); Burgess-Limerick R., Abernethy B., Neal R.J., Relative phase quantifies interjoint coordination, J Biomech, 26, pp. 91-94, (1993); Turvey M.T., Coordination, Am Psychol 1990, 45, pp. 938-953; Scholz J.P., Dynamic pattern theory-Some implications for therapeutics, Phys Ther, 70, pp. 827-843, (1990); Stergiou N., Jensen J.L., Bates B.T., Scholten S.D., Tzetzis G., A dynamical systems investigation of lower extremity coordination during running over obstacles, Clin Biomech, 16, pp. 213-221, (2001); Bizzi E., Cheung V.C.K., The neural origin of muscle synergies, Front Comput Neurosci, 7, pp. 1-6, (2013); Hamill J., Van Emmerik R.E.A., Heiderscheit B.C., Li L., A dynamical systems approach to lower extremity running injuries, Clin Biomech, 14, pp. 297-308, (1999); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med Sci Sports Exerc, 34, pp. 2028-2036, (2002); Lees A., Steward I., Rahnama N., Barton G., Lower limb function in the maximal instep kick in soccer, Contemporary Sport, Leisure and Ergonomics, pp. 149-160, (2009); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med Sci Sports Exerc, 30, pp. 917-927, (1998); Barfield W., Effects of selected kinematic and kinetic variables on instep kicking with dominant and nondominant limbs, J Hum Mov Stud, 29, pp. 251-272, (1995); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Aagaard H., Dyhre-Poulsen P., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scand J Med Sci Sports, 9, pp. 195-200, (1999); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, J Sports Sci, 24, pp. 529-541, (2006); Putnam C.A., A segment interaction analysis of proximal-to- distal sequential segment motion patterns, Med Sci Sports Exerc, 23, pp. 130-141, (1991); Fregly B.J., Zajac F.E., A state-space analysis of mechanical energy generation, absorption and transfer during pedaling, J Biomech, 29, pp. 81-90, (1996); Zajac F.E., Neptune R.R., Kautz S.A., Biomechanics and muscle coordination of human walking. Part I: Introduction to concepts, power transfer, dynamics and simulations, Gait Posture, 16, pp. 215-232, (2002); Naito K., Fukui Y., Maruyama T., Energy redistribution analysis of dynamic mechanisms of multi-body, multi-joint kinetic chain movement during soccer instep kicks, Hum Mov Sci, 31, pp. 161-181, (2012); Egan C., Verheul M., Savelsbergh G., Effects of experience on the coordination of internally and externally timed soccer kicks, J Motor Behav, 39, pp. 423-432, (2007); Zajac F.E., Understanding muscle coordination of the human leg with dynamical simulations, J Biomech, 35, pp. 1011-1018, (2002); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, J Sports Sci, 28, pp. 805-817, (2010); Putnam C.A., Sequential motions of body segments in striking and throwing skills: Descriptions and explanations, J Biomech, 26, pp. 125-135, (1993); Ross J.R., Nepple J.J., Philippon M.J., Kelly B.T., Larson C.M., Bedi A., Effect of changes in pelvic tilt on range of motion to impingement and radiographic parameters of acetabular morphologic characteristics, Am J Sports Med, 42, pp. 2402-2409, (2014); Schache A.G., Blanch P.D., Murphy A.T., Relation of anterior pelvic tilt during running to clinical and kinematic measures of hip extension, Brit J Sport Med, 34, pp. 279-283, (2000); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J Sports Sci Med, 6, pp. 154-165, (2007); Katis A., Giannadakis E., Kannas T., Amiridis I., Kellis E., Lees A., Mechanisms that influence accuracy of the soccer kick, J Electromyogr Kinesiol, 23, pp. 125-131, (2013)","R. Langhout; Physiotherapy Dukenburg Nijmegen, Nijmegen, Aldenhof 7003, 6537 DZ, Netherlands; email: noor.rob@gmail.com","","Edizioni Minerva Medica","00224707","","JMPFA","26129917","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-84978796177" "Gérin-Lajoie M.; Ronsky J.L.; Loitz-Ramage B.; Robu I.; Richards C.L.; McFadyen B.J.","Gérin-Lajoie, Martin (8939937800); Ronsky, Janet L. (35570023800); Loitz-Ramage, Barbara (7801349110); Robu, Ion (21741166500); Richards, Carol L. (7201656105); McFadyen, Bradford J. (7004877191)","8939937800; 35570023800; 7801349110; 21741166500; 7201656105; 7004877191","Navigational strategies during fast walking: A comparison between trained athletes and non-athletes","2007","Gait and Posture","26","4","","539","545","6","14","10.1016/j.gaitpost.2006.11.209","https://www.scopus.com/inward/record.uri?eid=2-s2.0-34548673742&doi=10.1016%2fj.gaitpost.2006.11.209&partnerID=40&md5=c163493bfbc8ce1b7e7046dfea93ac22","Center for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS), Department of Rehabilitation, Faculty of Medicine, Que., Canada; Human Performance Laboratory, Faculty of Kinesiology, Department of Mechanical and Manufacturing Engineering, Calgary, Alta., Canada","Gérin-Lajoie M., Center for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS), Department of Rehabilitation, Faculty of Medicine, Que., Canada; Ronsky J.L., Human Performance Laboratory, Faculty of Kinesiology, Department of Mechanical and Manufacturing Engineering, Calgary, Alta., Canada; Loitz-Ramage B., Human Performance Laboratory, Faculty of Kinesiology, Department of Mechanical and Manufacturing Engineering, Calgary, Alta., Canada; Robu I., Human Performance Laboratory, Faculty of Kinesiology, Department of Mechanical and Manufacturing Engineering, Calgary, Alta., Canada; Richards C.L., Center for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS), Department of Rehabilitation, Faculty of Medicine, Que., Canada; McFadyen B.J., Center for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS), Department of Rehabilitation, Faculty of Medicine, Que., Canada","Many common activities such as walking in a shopping mall, moving in a busy subway station, or even avoiding opponents during sports, all require different levels of navigational skills. Obstacle circumvention is beginning to be understood across age groups, but studying trained athletes with greater levels of motor ability will further our understanding of skilful adaptive locomotor behavior. The objective of this work was to compare navigational skills during fast walking between elite athletes (e.g. soccer, field hockey, basketball) and aged-matched non-athletes under different levels of environmental complexity in relation to obstacle configuration and visibility. The movements of eight women athletes and eight women non-athletes were measured as they walked as fast as possible through different obstacle courses in both normal and low lighting conditions. Results showed that athletes, despite similar unobstructed maximal speeds to non-athletes, had faster walking times during the navigation of all obstructed environments. It appears that athletes can process visuo-spatial information faster since both groups can make appropriate navigational decisions, but athletes can navigate through complex, novel, environments at greater speeds. Athletes' walking times were also more affected by the low lighting conditions suggesting that they normally scan the obstructed course farther ahead. This study also uses new objective measures to assess functional locomotor capacity in order to discriminate individuals according to their level of navigational ability. The evaluation paradigm and outcome measures developed may be applicable to the evaluation of skill level in athletic training and selection, as well as in gait rehabilitation following impairment. © 2006 Elsevier B.V. All rights reserved.","Elite athletes; Gait; Locomotor control; Navigation; Obstacle avoidance","Adult; Analysis of Variance; Biomechanics; Female; Humans; Psychomotor Performance; Reaction Time; Space Perception; Sports; Visual Perception; Walking; adaptation; adult; article; athlete; basketball; cognition; controlled study; depth perception; environmental factor; evaluation; female; functional assessment; gait; human; human experiment; illumination; locomotion; motor performance; navigational skill; normal human; outcome assessment; priority journal; skill; sport; training; visibility; walking speed","Vallis L.A., McFadyen B.J., Children use different anticipatory control strategies than adults to circumvent an obstacle in the travel path, Exp Brain Res, 167, pp. 119-127, (2005); Fajen B.R., Warren W.H., Behavioral dynamics of steering, obstacle avoidance, and route selection, J Exp Psychol Hum Percept Perform, 29, pp. 343-362, (2003); Patla A.E., Tomescu S.S., Ishac M.G., What visual information is used for navigation around obstacles in a cluttered environment?, Can J Physiol Pharmacol, 82, pp. 682-692, (2004); Gerin-Lajoie M., Richards C.L., McFadyen B.J., The negotiation of stationary and moving obstructions during walking: anticipatory locomotor adaptations and preservation of personal space, Motor Control, 9, pp. 242-269, (2005); Vallis L.A., McFadyen B.J., Locomotor adjustments for circumvention of an obstacle in the travel path, Exp Brain Res, 152, pp. 409-414, (2003); Gerin-Lajoie M., Richards C.L., McFadyen B.J., The circumvention of obstacles during walking in different environmental contexts: A comparison between older and younger adults, Gait Posture, 24, pp. 364-369, (2006); Reed R.J., Lowrey C.R., Vallis L.A., Middle-old and old-old retirement dwelling adults respond differently to locomotor challenges in cluttered environments, Gait Posture, 23, pp. 486-491, (2006); McFadyen B.J., Winter D.A., Anticipatory locomotor adjustments during obstructed human walking, Neurosci Res Commun, 9, pp. 37-44, (1991); Patla A.E., Prentice S.D., Robinson C., Neufeld J., Visual control of locomotion: strategies for changing direction and for going over obstacles, J Exp Psychol Hum Percept Perform, 17, pp. 603-634, (1991); Grasso R., Prevost P., Ivanenko Y.P., Berthoz A., Eye-head coordination for the steering of locomotion in humans: an anticipatory synergy, Neurosci Lett, 253, pp. 115-118, (1998); Sigward S., Powers C.M., The influence of experience on knee mechanics during side-step cutting in females, Clin Biomech, 21, pp. 740-747, (2006); Abernethy B., Training the visual-perceptual skills of athletes, Am J Sports Med, S-89, (1996); Micheli L.J., Metzl J.D., Di Canzio J., Zurakowski D., Anterior cruciate ligament reconstructive surgery in adolescent soccer and basketball players, Clin J Sport Med, 9, pp. 138-141, (1999)","B.J. McFadyen; Center for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS), Department of Rehabilitation, Faculty of Medicine, Que., Canada; email: brad.mcfadyen@rea.ulaval.ca","","","09666362","","GAPOF","17208442","English","Gait Posture","Article","Final","","Scopus","2-s2.0-34548673742" "Schmidt H.; Bashkuev M.; Weerts J.; Graichen F.; Altenscheidt J.; Maier C.; Reitmaier S.","Schmidt, Hendrik (35753329800); Bashkuev, Maxim (55338213100); Weerts, Jeronimo (57194872332); Graichen, Friedmar (7004634028); Altenscheidt, Joern (55780972900); Maier, Christoph (55345516500); Reitmaier, Sandra (55338725500)","35753329800; 55338213100; 57194872332; 7004634028; 55780972900; 55345516500; 55338725500","How do we stand? Variations during repeated standing phases of asymptomatic subjects and low back pain patients","2018","Journal of Biomechanics","70","","","67","76","9","14","10.1016/j.jbiomech.2017.06.016","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85023761582&doi=10.1016%2fj.jbiomech.2017.06.016&partnerID=40&md5=c0bff91b5fcb311aad3c27f55a20271f","Julius Wolff Institut, Charité – Universitätsmedizin Berlin, Germany; Department of Pain Management, BG-University Hospital Bergmannsheil, Bochum, Germany","Schmidt H., Julius Wolff Institut, Charité – Universitätsmedizin Berlin, Germany; Bashkuev M., Julius Wolff Institut, Charité – Universitätsmedizin Berlin, Germany; Weerts J., Julius Wolff Institut, Charité – Universitätsmedizin Berlin, Germany; Graichen F., Julius Wolff Institut, Charité – Universitätsmedizin Berlin, Germany; Altenscheidt J., Department of Pain Management, BG-University Hospital Bergmannsheil, Bochum, Germany; Maier C., Department of Pain Management, BG-University Hospital Bergmannsheil, Bochum, Germany; Reitmaier S., Julius Wolff Institut, Charité – Universitätsmedizin Berlin, Germany","An irreproducible standing posture can lead to mis-interpretation of radiological measurements, wrong diagnoses and possibly unnecessary treatment. This study aimed to evaluate the differences in lumbar lordosis and sacrum orientation in six repetitive upright standing postures of 353 asymptomatic subjects (including 332 non-athletes and 21 athletes – soccer players) and 83 low back pain (LBP) patients using a non-invasive back-shape measurement device. In the standing position, all investigated cohorts displayed a large inter-subject variability in sacrum orientation (∼40°) and lumbar lordosis (∼53°). In the asymptomatic cohort (non-athletes), 51% of the subjects showed variations in lumbar lordosis of 10–20% in six repeated standing phases and 29% showed variations of even more than 20%. In the sacrum orientation, 53% of all asymptomatic subjects revealed variations of >20% and 31% of even more than 30%. It can be concluded that standing is highly individual and poorly reproducible. The reproducibility was independent of age, gender, body height and weight. LBP patients and athletes showed a similar variability as the asymptomatic cohort. The number of standing phases performed showed no positive effect on the reproducibility. Therefore, the variability in standing is not predictable but random, and thus does not reflect an individual specific behavioral pattern which can be reduced, for example, by repeated standing phases. © 2017 Elsevier Ltd","Age; Gender; Human posture; Lumbar lordosis; MiSpEx; Sacrum orientation; Standing","Adult; Aged; Aged, 80 and over; Athletes; Female; Humans; Lordosis; Low Back Pain; Lumbar Vertebrae; Male; Middle Aged; Reproducibility of Results; Sacrum; Standing Position; Young Adult; Biomechanics; Mechanics; Gender; Human postures; Lumbar lordosis; MiSpEx; Standing; Article; asymptomatic disease; body height; body weight; cohort analysis; controlled study; diagnostic error; female; gender; global change; human; incidence; lordosis; low back pain; major clinical study; male; non invasive measurement; priority journal; reproducibility; sacrum; soccer; standing; adult; aged; athlete; low back pain; lumbar vertebra; middle aged; pathophysiology; physiology; very elderly; young adult; Diagnosis","Adams M.A., Dolan P., Time-dependent changes in the lumbar spine's resistance to bending, Clin. Biomech. (Bristol, Avon), 11, pp. 194-200, (1996); Adams M.A., Dolan P., Hutton W.C., Diurnal variations in the stresses on the lumbar spine, Spine, 12, pp. 130-137, (1987); Adams M.A., Dolan P., Marx C., Hutton W.C., An electronic inclinometer technique for measuring lumbar curvature, Clin. Biomech., 1, pp. 130-134, (1986); Amonoo-Kuofi H.S., Changes in the lumbosacral angle, sacral inclination and the curvature of the lumbar spine during aging, Acta Anat., 145, pp. 373-377, (1992); Aota Y., Saito T., Uesugi M., Ishida K., Shinoda K., Mizuma K., 34, pp. 808-812, (2009); Consmuller T., Rohlmann A., Weinland D., Druschel C., Duda G.N., Taylor W.R., Comparative evaluation of a novel measurement tool to assess lumbar spine posture and range of motion, Eur. Spine J., 21, pp. 2170-2180, (2012); Consmuller T., Rohlmann A., Weinland D., Druschel C., Duda G.N., Taylor W.R., Velocity of lordosis angle during spinal flexion and extension, PLoS ONE, 7, (2012); Dewi D.E., Veldhuizen A.G., Burgerhof J.G., Purnama I.K., van Ooijen P.M., Wilkinson M.H., Mengko T.L., Verkerke G.J., Reproducibility of standing posture for X-ray radiography: a feasibility study of the BalancAid with healthy young subjects, Ann. Biomed. Eng., 38, pp. 3237-3245, (2010); Dreischarf M., Albiol L., Rohlmann A., Pries E., Bashkuev M., Zander T., Duda G., Druschel C., Strube P., Putzier M., Schmidt H., Age-related loss of lumbar spinal lordosis and mobility–a study of 323 asymptomatic volunteers, PLoS ONE, 9, (2014); Faro F.D., Marks M.C., Pawelek J., Newton P.O., Evaluation of a functional position for lateral radiograph acquisition in adolescent idiopathic scoliosis, (2004); Gelb D.E., Lenke L.G., Bridwell K.H., Blanke K., 20, pp. 1351-1358, (1995); Gifford L.S., Circadian variation in human flexibility and grip strength, Aust. J. Physiother., 33, pp. 3-9, (1987); Granata K.P., Sanford A.H., 25, pp. 1413-1418, (2000); Guermazi M., Ghroubi S., Kassis M., Jaziri O., Keskes H., Kessomtini W., Ben Hammouda I., Elleuch M.H., Validity and reliability of Spinal Mouse to assess lumbar flexion, Annales de readaptation et de medecine physique: revue scientifique de la Societe francaise de reeducation fonctionnelle de readaptation et de medecine physique, 49, pp. 172-177, (2006); Hammerberg E.M., Wood K.B., Sagittal profile of the elderly, J. Spinal Disord. Techniq., 16, pp. 44-50, (2003); Hansson T., Bigos S., Beecher P., Wortley M., 10, pp. 154-155, (1985); Hayashi K., Upasani V.V., Pawelek J.B., Aubin C.E., Labelle H., Lenke L.G., Jackson R., Newton P.O., 34, pp. 792-797, (2009); Jackson R.P., Hales C., 25, pp. 2808-2815, (2000); Jackson R.P., 19, pp. 1611-1618, (1994); Jackson R.P., Peterson M.D., McManus A.C., Hales C., 23, pp. 1750-1767, (1998); Koreska J., Schwentker E.P., Albisser A.M., Gibson D.A., Mills R.H., A simple approach to standardized spinal radiographs, Med. Instrum., 12, pp. 59-63, (1978); Kumar M.N., Baklanov A., Chopin D., Correlation between sagittal plane changes and adjacent segment degeneration following lumbar spine fusion, Eur. Spine J., 10, pp. 314-319, (2001); La Grone M.O., Loss of lumbar lordosis. A complication of spinal fusion for scoliosis, Orthoped. Clin. North Am., 19, pp. 383-393, (1988); Lin R.M., Jou I.M., Yu C.Y., Lumbar lordosis: normal adults, J. Formosan Med. Assoc. = Taiwan yi zhi, 91, pp. 329-333, (1992); Maduri A., Pearson B.L., Wilson S.E., Lumbar-pelvic range and coordination during lifting tasks, J. Electromyograp. Kinesiol.: official journal of the International Society of Electrophysiological Kinesiology, 18, pp. 807-814, (2008); Manire J.T., Kipp R., Spencer J., Swank A.M., Diurnal variation of hamstring and lumbar flexibility, J. Strength Condition. Res./National Strength Condition. Assoc., 24, pp. 1464-1471, (2010); Peleg S., Dar G., Medlej B., Steinberg N., Masharawi Y., Latimer B., Jellema L., Peled N., Arensburg B., Hershkovitz I., Orientation of the human sacrum: anthropological perspectives and methodological approaches, Am. J. Phys. Anthropol., 133, pp. 967-977, (2007); Peleg S., Dar G., Steinberg N., Peled N., Hershkovitz I., Masharawi Y., (2007); Pellet N., Aunoble S., Meyrat R., Rigal J., Le Huec J.C., Sagittal balance parameters influence indications for lumbar disc arthroplasty or ALIF, Eur. Spine J., 20, pp. 647-662, (2011); Pries E., Dreischarf M., Bashkuev M., Putzier M., Schmidt H., The effects of age and gender on the lumbopelvic rhythm in the sagittal plane in 309 subjects, J. Biomech., 48, pp. 3080-3087, (2015); Pries E., Dreischarf M., Bashkuev M., Schmidt H., Application of a novel spinal posture and motion measurement system in active and static sitting, Ergonomics, pp. 1-6, (2015); (2016); Rohlmann A., Consmuller T., Dreischarf M., Bashkuev M., Disch A., Pries E., Duda G.N., Schmidt H., Measurement of the number of lumbar spinal movements in the sagittal plane in a 24-hour period, Eur. Spine J., 23, pp. 2375-2384, (2014); Schmidt J., Gassel F., Clinical use of the simple 3D-calculation in scoliosis, Skeletal Radiol., 23, pp. 43-48, (1994); Schwab F., Lafage V., Boyce R., Skalli W., Farcy J.P., (2006); Stagnara P., De Mauroy J.C., Dran G., Gonon G.P., Costanzo G., Dimnet J., 7, pp. 335-342, (1982); Stokes I.A., Bevins T.M., Lunn R.A., 12, pp. 355-361, (1987); Tafazzol A., Arjmand N., Shirazi-Adl A., Parnianpour M., Lumbopelvic rhythm during forward and backward sagittal trunk rotations: combined in vivo measurement with inertial tracking device and biomechanical modeling, Clin. Biomech. (Bristol, Avon), 29, pp. 7-13, (2014); Taylor W.R., Consmuller T., Rohlmann A., A novel system for the dynamic assessment of back shape, Med. Eng. Phys., 32, pp. 1080-1083, (2010); Troke M., Moore A.P., Maillardet F.J., Cheek E., A normative database of lumbar spine ranges of motion, Manual Ther., 10, pp. 198-206, (2005); Tuzun C., Yorulmaz I., Cindas A., Vatan S., Low back pain and posture, Clin. Rheumatol., 18, pp. 308-312, (1999); Van Herp G., Rowe P., Salter P., Paul J.P., Three-dimensional lumbar spinal kinematics: a study of range of movement in 100 healthy subjects aged 20 to 60+ years, Rheumatology, 39, pp. 1337-1340, (2000); Vedantam R., Lenke L.G., Keeney J.A., Bridwell K.H., 23, pp. 211-215, (1998); Vialle R., Levassor N., Rillardon L., Templier A., Skalli W., Guigui P., Radiographic analysis of the sagittal alignment and balance of the spine in asymptomatic subjects, J. Bone Joint Surg., 87, pp. 260-267, (2005)","H. Schmidt; Julius Wolff Institut, Charité – Universitätsmedizin Berlin, Berlin, Augustenburger Platz 1, 13353, Germany; email: hendrik.schmidt@charite.de","","Elsevier Ltd","00219290","","JBMCB","28683929","English","J. Biomech.","Article","Final","","Scopus","2-s2.0-85023761582" "Baumgart C.; Gokeler A.; Donath L.; Hoppe M.W.; Freiwald J.","Baumgart, Christian (15021681900); Gokeler, Alli (6603151338); Donath, Lars (27367766300); Hoppe, Matthias W. (37561282400); Freiwald, Jürgen (6701468045)","15021681900; 6603151338; 27367766300; 37561282400; 6701468045","Effects of static stretching and playing soccer on knee laxity","2015","Clinical Journal of Sport Medicine","25","6","","541","545","4","14","10.1097/jsm.0000000000000174","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946546955&doi=10.1097%2fjsm.0000000000000174&partnerID=40&md5=5244a32c2805dc1f2cb9a35be766a96d","Research Center for Performance Diagnostics and Training Advice, University of Wuppertal, Fuhlrottstraße 10, Wuppertal, 42119, Germany; University of Groningen, University Medical Center Groningen, Center for Human Movement Sciences, Groningen, Netherlands; Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland","Baumgart C., Research Center for Performance Diagnostics and Training Advice, University of Wuppertal, Fuhlrottstraße 10, Wuppertal, 42119, Germany; Gokeler A., University of Groningen, University Medical Center Groningen, Center for Human Movement Sciences, Groningen, Netherlands; Donath L., Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland; Hoppe M.W., Research Center for Performance Diagnostics and Training Advice, University of Wuppertal, Fuhlrottstraße 10, Wuppertal, 42119, Germany; Freiwald J., Research Center for Performance Diagnostics and Training Advice, University of Wuppertal, Fuhlrottstraße 10, Wuppertal, 42119, Germany","Objective: This study investigated exercise-induced effects of static stretching and playing soccer on anterior tibial translation (ATT) of the knee joint. Design: Randomized controlled trial. Setting: University biomechanics laboratory. Participants: Thirty-one athletes were randomly assigned into a stretching (26.9 ± 6.2 years, 1.77 ± 0.09 m, 67.9 ± 10.7 kg) and a control group (27.9 ± 7.4 years, 1.75 ± 0.08 m, 72.0 ± 14.9 kg). Thirty-one amateur soccer players in an additional soccer group (25.1 6 5.6 years, 1.74 ± 0.10 m, 71.8 ± 14.8 kg). All participants had no history of knee injury requiring surgery and any previous knee ligament or cartilage injury. Interventions: The stretching group performed 4 different static stretching exercises with a duration of 2 × 20 seconds interspersed with breaks of 10 seconds. The soccer group completed a 90-minute soccer-specific training program. The control group did not perform any physical activity for approximately 30 minutes. Main Outcome Measures: Anterior tibial translation was measured with the KT-1000 knee arthrometer at forces of 67 N, 89 N, and maximal manual force (Max) before and after the intervention. Results: There was a significant increase in ATT after static stretching and playing soccer at all applied forces. Maximal manual testing revealed a mean increase of ATT after static stretching of 2.1 ± 1.6 mm (P < 0.0005) and after playing soccer of 1.0 ± 1.5 mm (P = 0.001). The ATT increase after static stretching at 67 and 89 N is significantly higher than in controls. At maximum manual testing, significant differences were evident between all groups. Conclusions: Static stretching and playing soccer increase ATT and may consequently influence mechanical factors of the anterior cruciate ligament. The ATT increase after static stretching was greater than after playing soccer. Clinical Relevance: The observed increase in ATT after static stretching and playing soccer may be associated with changes in kinesthetic perception and sensorimotor control, activation of muscles, joint stability, overall performance, and higher injury risk. Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved.","ACL; Anterior tibial translation; Injury; Knee joint; KT-1000 arthrometer; Warm-up","Adult; Athletes; Humans; Joint Instability; Knee Joint; Muscle Stretching Exercises; Soccer; Young Adult; adult; arthrometer; Article; athlete; biomechanics; comparative study; controlled study; female; human; human experiment; knee anterior tibial translation; knee function; male; maximal manual force; musculoskeletal system parameters; outcome assessment; physical activity; priority journal; randomized controlled trial; soccer; static exercise; stretching exercise; therapy effect; treatment duration; injuries; joint instability; knee; physiology; procedures; soccer; stretching exercise; young adult","FIFA, Big Count: FIFA Survey, (2013); Herrero H., Salinero J.J., Del Coso J., Injuries among Spanish male amateur soccer players: A retrospective population study, Am J Sports Med., 42, pp. 78-85, (2014); Walden M., Hagglund M., Magnusson H., Et al., Anterior cruciate ligament injury in elite football: A prospective three-cohort study, Knee Surg Sports Traumatol Arthrosc., 19, pp. 11-19, (2011); Renstrom P., Ljungqvist A., Arendt E., Et al., Non-contact ACL injuries in female athletes: An International Olympic Committee current concepts statement, Br J Sports Med., 42, pp. 394-412, (2008); Alentorn-Geli E., Myer G.D., Silvers H.J., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: Mechanisms of injury and underlying risk factors, Knee Surg Sports Traumatol Arthrosc., 17, pp. 705-729, (2009); Fauno P., Wulff Jakobsen B., Mechanism of anterior cruciate ligament injuries in soccer, Int J Sports Med., 27, pp. 75-79, (2006); Davis I., Ireland M.L., Hanaki S., ACL injuries-The gender bias, J Orthop Sports Phys Ther., 37, pp. A2-A7, (2007); Myer G.D., Ford K.R., Paterno M.V., Et al., The effects of generalized joint laxity on risk of anterior cruciate ligament injury in young female athletes, Am J Sports Med., 36, pp. 1073-1080, (2008); Kirkley A., Mohtadi N., Ogilvie R., The effect of exercise on anteriorposterior translation of the normal knee and knees with deficient or reconstructed anterior cruciate ligaments, Am J Sports Med., 29, pp. 311-314, (2001); Skinner H.B., Wyatt M.P., Stone M.L., Et al., Exercise-related knee joint laxity, Am J Sports Med., 14, pp. 30-34, (1986); Rozzi S.L., Lephart S.M., Gear W.S., Et al., Knee joint laxity and neuromuscular characteristics of male and female soccer and basketball players, Am J Sports Med., 27, pp. 312-319, (1999); Johannsen H.V., Lind T., Jakobsen B.W., Et al., Exercise-induced knee joint laxity in distance runners, Br J Sports Med., 23, pp. 165-168, (1989); Sakai H., Tanaka S., Kurosawa H., Et al., The effect of exercise on anterior knee laxity in female basketball players, Int J Sports Med., 13, pp. 552-554, (1992); Maitland M.E., Lowe R., Stewart S., Et al., Does Cybex testing increase knee laxity after anterior cruciate ligament reconstructions?, Am J Sports Med., 21, pp. 690-695, (1993); Yamagishi T., Fujii K., Anterior knee laxity in skiers before and after racing, Knee Surg Sports Traumatol Arthrosc., 6, pp. 169-172, (1998); Nawata K., Teshima R., Morio Y., Et al., Anterior-posterior knee laxity increased by exercise. Quantitative evaluation of physiologic changes, Acta Orthop Scand., 70, pp. 261-264, (1999); Rowe A., Wright S., Nyland J., Et al., Effects of a 2-hour cheerleading practice on dynamic postural stability, knee laxity, and hamstring extensibility, J Orthop Sports Phys Ther., 29, pp. 455-462, (1999); Chapman V., Increased anterior translation of the knee in professional rugby players following one-hour game-related training: An etiological factor for anterior cruciate ligament ruptures?, OA Sports Med., 1, (2013); Steiner M.E., Grana W.A., Chillag K., Et al., The effect of exercise on anterior-posterior knee laxity, Am J Sports Med., 14, pp. 24-29, (1986); Sumen Y., Ochi M., Adachi N., Et al., Anterior laxity and MR signals of the knee after exercise. A comparison of 9 normal knees and 6 anterior cruciate ligament reconstructed knees, Acta Orthop Scand., 70, pp. 256-260, (1999); Shultz S.J., Schmitz R.J., Cone J.R., Et al., Multiplanar knee laxity increases during a 90-min intermittent exercise protocol, Med Sci Sports Exerc., 45, pp. 1553-1561, (2013); Pollard C.D., Braun B., Hamill J., Influence of gender, estrogen and exercise on anterior knee laxity, Clin Biomech (Bristol, Avon), 21, pp. 1060-1066, (2006); Medrano D., Smith D., A comparison of knee joint laxity among male and female collegiate soccer players and non-athletes, Sports Biomech., 2, pp. 203-212, (2003); Alter M.J., Science of Flexibility, pp. 11-13, (2004); Shrier I., Does stretching help prevent injuries?, Evidence-based Sports Medicine, pp. 36-58, (2007); Behm D.G., Chaouachi A., A review of the acute effects of static and dynamic stretching on performance, Eur J Appl Physiol., 111, pp. 2633-2651, (2011); Small K., McNaughton L., Matthews M., A systematic review into the efficacy of static stretching as part of a warm-up for the prevention of exercise-related injury, Res Sports Med., 16, pp. 213-231, (2008); Taylor J.B., Waxman J.P., Richter S.J., Et al., Evaluation of the effectiveness of anterior cruciate ligament injury prevention programme training components: A systematic review and meta-analysis, Br J Sports Med., 49, pp. 79-87, (2015); Alentorn-Geli E., Myer G.D., Silvers H.J., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 2: A review of prevention programs aimed to modify risk factors and to reduce injury rates, Knee Surg Sports Traumatol Arthrosc., 17, pp. 859-879, (2009); Sadoghi P., Von Keudell A., Vavken P., Effectiveness of anterior cruciate ligament injury prevention training programs, J Bone Joint Surg Am., 94, pp. 769-776, (2012); Harriss D.J., Atkinson G., International Journal of Sports Medicine - Ethical standards in sport and exercise science research, Int J Sports Med., 30, pp. 701-702, (2009); Pugh L., Mascarenhas R., Arneja S., Et al., Current concepts in instrumented knee-laxity testing, Am J Sports Med., 37, pp. 199-210, (2009); Monaco E., Labianca L., Maestri B., Et al., Instrumented measurements of knee laxity: KT-1000 versus navigation, Knee Surg Sports Traumatol Arthrosc., 17, pp. 617-621, (2009); Hertel J., Williams N.I., Olmsted-Kramer L.C., Et al., Neuromuscular performance and knee laxity do not change across the menstrual cycle in female athletes, Knee Surg Sports Traumatol Arthrosc., 14, pp. 817-822, (2006); Cohen J., Statistical Power Analysis for the Behavioral Sciences, pp. 284-291, (1988); Grana W.A., Muse G., The effect of exercise on laxity in the anterior cruciate ligament deficient knee, Am J Sports Med., 16, pp. 586-588, (1988); Solomonow M., Ligaments: A source of musculoskeletal disorders, J Bodyw Mov Ther., 13, pp. 136-154, (2009); Behrens M., Mau-Moeller A., Wassermann F., Et al., Effect of fatigue on hamstring reflex responses and posterior-anterior tibial translation in men and women, PLoS One., 8, (2013); Shultz S.J., Schmitz R.J., Effects of transverse and frontal plane knee laxity on hip and knee neuromechanics during drop landings, Am J Sports Med., 37, pp. 1821-1830, (2009); Riemann B.L., Lephart S.M., The sensorimotor system, part II: The role of proprioception in motor control and functional joint stability, J Athl Train., 37, pp. 80-84, (2002); Shultz S.J., Carcia C.R., Perrin D.H., Knee joint laxity affects muscle activation patterns in the healthy knee, J Electromyogr Kinesiol., 14, pp. 475-483, (2004); Boeth H., Duda G.N., Heller M.O., Et al., Anterior cruciate ligamentdeficient patients with passive knee joint laxity have a decreased range of anterior-posterior motion during active movements, Am J Sports Med., 41, pp. 1051-1057, (2013); Senisik S., Ozgurbuz C., Ergun M., Et al., Posterior tibial slope as a risk factor for anterior cruciate ligament rupture in soccer players, J Sports Sci Med., 10, pp. 763-767, (2011); Ergun M., Islegen C., Taskiran E., A cross-sectional analysis of sagittal knee laxity and isokinetic muscle strength in soccer players, Int J Sports Med., 25, pp. 594-598, (2004); Shultz S.J., Dudley W.N., Kong Y., Identifying multiplanar knee laxity profiles and associated physical characteristics, J Athl Train., 47, pp. 159-169, (2012)","C. Baumgart; Research Center for Performance Diagnostics and Training Advice, University of Wuppertal, Wuppertal, Fuhlrottstraße 10, 42119, Germany; email: baumgart@uni-wuppertal.de","","Lippincott Williams and Wilkins","1050642X","","CJSME","25647536","English","Clin. J. Sport Med.","Article","Final","","Scopus","2-s2.0-84946546955" "Alcock A.M.; Gilleard W.; Hunter A.B.; Baker J.; Brown N.","Alcock, Alison M. (30667447500); Gilleard, Wendy (6603049713); Hunter, Adam B. (22955778900); Baker, John (57197523970); Brown, Nicholas (14031257600)","30667447500; 6603049713; 22955778900; 57197523970; 14031257600","Curve and instep kick kinematics in elite female footballers","2012","Journal of Sports Sciences","30","4","","387","394","7","15","10.1080/02640414.2011.643238","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84856350149&doi=10.1080%2f02640414.2011.643238&partnerID=40&md5=5f713eba08406b45d0a43d048d9e879d","Department of Movement Science, Australian Institute of Sport, Belconnen, ACT 2616, Australia; Exercise Science and Sport Management, Southern Cross University, Lismore, NSW, Australia","Alcock A.M., Department of Movement Science, Australian Institute of Sport, Belconnen, ACT 2616, Australia, Exercise Science and Sport Management, Southern Cross University, Lismore, NSW, Australia; Gilleard W., Exercise Science and Sport Management, Southern Cross University, Lismore, NSW, Australia; Hunter A.B., Department of Movement Science, Australian Institute of Sport, Belconnen, ACT 2616, Australia; Baker J., Department of Movement Science, Australian Institute of Sport, Belconnen, ACT 2616, Australia; Brown N., Department of Movement Science, Australian Institute of Sport, Belconnen, ACT 2616, Australia","The three-dimensional kinematics of international female footballers performing a simulated direct free kick (curve kick) were compared with those of an instep kick. Reflective markers attached to the participants were tracked by 17 Vicon cameras sampling at 250 Hz. Foot velocity at ball impact did not differ between the two types of kick, but the way in which foot velocity was generated did differ, with instep kicks using a faster approach velocity and greater linear velocities of the hip and knee, and curve kicks using a greater knee angular velocity at impact. In both types of kick, peak knee angular velocity and peak ankle linear velocity occurred at ball impact, providing biomechanical support to the common coaching recommendation of kicking through the ball. To achieve a curved ball trajectory, players should take a wide approach angle, point the support foot to the right of the intended target (for right-footed players), swing the kicking limb across the face of the goal, and impact the ball with the foot moving upwards and in an abducted position. This information will be useful to coaches and players in identifying the fundamental coaching points necessary to achieve a curved trajectory of the ball compared with the more commonly described instep kick kinematics. © 2012 Taylor & Francis.","Biomechanics; Free kick; Set-play; Soccer; Technique","Adolescent; Adult; Biomechanics; Female; Hip; Humans; Lower Extremity; Movement; Soccer; Sports Equipment; Task Performance and Analysis; Young Adult; adolescent; adult; article; biomechanics; equipment; female; hip; human; leg; movement (physiology); physiology; sport; task performance","Alcock A., Analysis of direct free kicks in the women's football World Cup 2007, European Journal of Sport Science, 10, pp. 279-284, (2010); Asai T., Comparison of curve ball kick with instep kick in football, The Engineering of Sport: Research, Development and Innovation, pp. 487-494, (2000); Asai T., Carre M.J., Akatsuka T., Haake S.J., The curve kick of a football. I. Impact with the foot, Sports Engineering, 5, pp. 183-192, (2002); Asami T., Togari H., Kikuchi T., Energy efficiency of ball kicking, Biomechanics V-B, pp. 135-140, (1976); Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccerplayers, Journal of Sports Science and Medicine, 1, pp. 72-79, (2002); Besier T.F., Sturnieks D.L., Alderson J.A., Lloyd D.G., Repeatability of gait data using a functional hip joint centre and a mean helical knee axis, Journal of Biomechanics, 36, pp. 1159-1168, (2003); Beyer W.H., CRC Standard Mathematical Tables, (1987); Bray K., Kerwin G., Modelling the flight of a soccer ball in a direct free kick, Journal of Sports Sciences, 21, pp. 75-85, (2003); Browder K.D., Tant C.L., Wilkerson J.D., A Three Dimensional Kinematic Analysis of Three Kicking Techniques In Female Soccer Players, pp. 95-100, (1991); Carre M.J., Asai T., Akatsuka T., Haake S.J., The curve kick of a football. II. Flight through the air, Sports Engineering, 5, pp. 193-200, (2002); Chin A., Elliott B., Alderson J., Lloyd D., Foster D., The off-break and ""doosra"": Kinematic variations of elite and sub-elite bowlers in creating ball spin in cricket bowling, Sports Biomechanics, 8, pp. 187-198, (2009); Coleman S., Anderson D., An examination of the planar nature of golf club motion in the swings of experienced players, Journal of Sports Sciences, 25, pp. 739-748, (2007); Lees A., Nolan L., Three-dimensional kinematic analysis of the instep kick under speed and accuracy conditions, Science and Football, 4, pp. 16-21, (2002); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science In Sports and Exercise, 30, pp. 917-927, (1998); Lloyd D.G., Alderson J., Elliott B.C., An upper limb kinematic model for the examination of cricket bowling: A casestudy of Mutiah Muralitharan, Journal of Sports Sciences, 18, pp. 975-982, (2000); Nunome H., Asai T., Ikegami Y., Sakurai S., Threedimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science In Sports and Exercise, 34, pp. 2028-2036, (2002); Nunome H., Lake M., Georgakis A., Stergioulas L., Impact phase kinematics of instep kicking in soccer, Journal of Sports Sciences, 24, pp. 11-22, (2006); Orloff H., Sumida B., Chow J.Y., Habibi L., Fujino A., Kramer B., Ground reaction forces and kinematics of plant leg position during instep kicking in male and female collegiate soccer players, Sports Biomechanics, 7, pp. 238-247, (2008); Passmore M.A., Tuplin S., Spencer A., Jones R., Experimental studies of the aerodynamics of spinning and stationary footballs, Journal of Mechanical Engineering Science, 222, pp. 195-205, (2008); Sakurai S., Jinji T., Reid M., Cuitenho C., Elliott B., Direction of spin axis and spin rate of the ball in tennis serve, Journal of Biomechanics, 40, (2007); Shan G., Influence of gender and experience on the maximal instep soccer kick, European Journal of Sport Science, 9, pp. 107-114, (2009); Shan G., Daniels D., Wang C., Wutzke C., Lemire G., Biomechanical analysis of maximal instep kick by female soccer players, Journal of Human Movement Studies, 49, pp. 149-168, (2005); Tant C.L., Browder K.D., Wilkerson J.D., A Three Dimensional Kinematic Comparison of Kicking Techniques Between Male and Female Soccer Players, pp. 101-105, (1991); Teixeira L.A., Kinematics of kicking as a function of different sources of constraint on accuracy, Perceptual and Motor Skills, 88, pp. 785-789, (1999); Whiteside D., Alderson J., Elliott B., ""Bend it Like Beckham"": Ball Rotation In the Curved Football Kick, pp. 297-300, (2010)","A. M. Alcock; Department of Movement Science, Australian Institute of Sport, Belconnen, ACT 2616, Australia; email: Alison.alcock@sisport.com","","","1466447X","","JSSCE","22214481","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-84856350149" "Best R.; Mauch F.; Böhle C.; Huth J.; Brüggemann P.","Best, Raymond (24469931100); Mauch, Frieder (16555717100); Böhle, Caroline (55993139600); Huth, Jochen (57200161874); Brüggemann, Peter (8969823500)","24469931100; 16555717100; 55993139600; 57200161874; 8969823500","Residual mechanical effectiveness of external ankle tape before and after competitive professional soccer performance","2014","Clinical Journal of Sport Medicine","24","1","","51","57","6","12","10.1097/JSM.0b013e31829ddc74","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84891847315&doi=10.1097%2fJSM.0b013e31829ddc74&partnerID=40&md5=bb7ec6281512345b081741dcda78bd46","Department of Orthopedic Sports Medicine, Medical Clinic, University of Tübingen, 72076 Tübingen, Hoppe-Seyler-Straße 6, Germany; Department of Orthopedics, Sportklinik Stuttgart GmbH, Stuttgart, Germany; Department of Orthopedics and Biomechanics, German Sports University Cologne, Cologne, Germany","Best R., Department of Orthopedic Sports Medicine, Medical Clinic, University of Tübingen, 72076 Tübingen, Hoppe-Seyler-Straße 6, Germany, Department of Orthopedics, Sportklinik Stuttgart GmbH, Stuttgart, Germany; Mauch F., Department of Orthopedics, Sportklinik Stuttgart GmbH, Stuttgart, Germany; Böhle C., Department of Orthopedics and Biomechanics, German Sports University Cologne, Cologne, Germany; Huth J., Department of Orthopedics, Sportklinik Stuttgart GmbH, Stuttgart, Germany; Brüggemann P., Department of Orthopedics and Biomechanics, German Sports University Cologne, Cologne, Germany","OBJECTIVE:: To evaluate the presupposed preventive residual mechanical effectiveness of the widespread use of adhesive elastic ankle tape after a nonlaboratory, realistic soccer-specific outfield intervention reflecting a soccer halftime. DESIGN:: A prospective nonrandomized test-retest design was used. SETTING:: Laboratory. PARTICIPANTS:: Seventeen professional male outfield players (mean age, 25.5) without any signs of chronic ankle instability. INTERVENTION:: Participants were investigated before and after a 45-minute soccer-specific field intervention. MAIN OUTCOME MEASURES:: The passive inversion range of motion (ROM) of the ankle was tested unloaded on a self-developed inversion device with and without a standardized ankle tape before and after the intervention. Additionally, electromyography signal was taken to assure the inactivity of the protective evertor muscles, and reliability tests for the inversion device (test-retest and trial to trial) were conducted in 12 healthy controls. RESULTS:: Tape restricted the maximum passive inversion ROM of the uninjured ankle significantly to 50.3%. The protection declined nearly completely after 45 minutes of outfield soccer performance to a negligible nonsignificant ROM restriction of 9.7%. Pearson correlation coefficient for the reliability was 0.931 (P ≤ 0.001) for the test-retest and 0.983 (P ≤ 0.001) for the trial-to-trial test. CONCLUSIONS:: The initial significant protection of external ankle-tape support declines almost completely without relevant remaining residual mechanical effect after 45 minutes, reflecting a soccer halftime. The so far presupposed residual mechanical effectiveness of tape to prevent injury is increasingly irrelevant during soccer performance and consequently antidromic to the increasing injury risk toward the end of a soccer halftime. © 2014 by the American Medical Society for Sports Medicine.","ankle injury; exercise; professional soccer; tape protection","Adult; Ankle Joint; Athletes; Athletic Injuries; Athletic Tape; Humans; Male; Prospective Studies; Soccer; Young Adult; adult; article; athletic tape; biomechanics; controlled study; correlation coefficient; electromyography; external ankle tape; human; human experiment; male; priority journal; soccer; task performance; test retest reliability","Callaghan M.J., Role of ankle taping and bracing in the athlete, British Journal of Sports Medicine, 31, 2, pp. 102-108, (1997); Junge A., Dvorak J., Soccer injuries: A review on incidence and prevention, Sports Medicine, 34, 13, pp. 929-938, (2004); Junge A., Langevoort G., Pipe A., Et al., Injuries in team sport tournaments during the 2004 Olympic Games, Am J Sports Med, 34, pp. 565-576, (2006); Surve I., Schwellnus M.P., Noakes T., Lombard C., A fivefold reduction in the incidence of recurrent ankle sprains in soccer players using the sport-stirrup orthosis, American Journal of Sports Medicine, 22, 5, pp. 601-606, (1994); Woods C., Hawkins R., Hulse M., Hodson A., The Football Association Medical Research Programme: An audit of injuries in professional football: An analysis of ankle sprains, British Journal of Sports Medicine, 37, 3, pp. 233-238, (2003); Van Rijn R.M., Van Os A.G., Bernsen R.M., Et al., What is the clinical course of acute ankle sprains? A systematic literature review, Am J Med, 121, pp. 324-331, (2008); Nigg B.M., Skarvan G., Frank C.B., Yeadon M.R., Elongation and forces of ankle ligaments in a physiological range of motion, Foot and Ankle, 11, 1, pp. 30-40, (1990); Paris D.L., Vardaxis V., Kokaliaris J., Ankle ranges of motion during extended activity periods while taped and braced, J Athl Train, 30, pp. 223-228, (1995); Verhagen E., Bay K., Optimising ankle sprain prevention: A critical review and practical appraisal of the literature, Br J Sports Med, 44, pp. 1082-1088, (2010); Meana M., Alegre L.M., Elvira J.L.L., Aguado X., Kinematics of ankle taping after a training session, International Journal of Sports Medicine, 29, 1, pp. 70-76, (2008); Robbins S., Waked E., Factors associated with ankle injuries. Preventive measures, Sports Medicine, 25, 1, pp. 63-72, (1998); Greig M., Walker-Johnson C., The influence of soccer-specific fatigue on functional stability, Physical Therapy in Sport, 8, 4, pp. 185-190, (2007); Gribble P.A., Hertel J., Effect of lower-extremity muscle fatigue on postural control, Archives of Physical Medicine and Rehabilitation, 85, 4, pp. 589-592, (2004); Dupont G., Nedelec M., McCall M., Et al., Effect of 2 soccer matches in a week on physical performance an injury rate, Am J Sports Med, 38, pp. 1752-1758, (2010); Hawkins R.D., Hulse M.A., Wilkinson C., Hodson A., Gibson M., The association football medical research programme: An audit of injuries in professional football, British Journal of Sports Medicine, 35, 1, pp. 43-47, (2001); Lohkamp M., Craven S., Walker-Johnson C., Et al., The influence of ankle taping on changes in postural stability during soccer specific activity, J Sport Rehabil, 18, pp. 482-492, (2009); Gleeson N.P., Reilly T., Mercer T.H., Rakowski S., Rees D., Influence of acute endurance activity on leg neuromuscular and musculoskeletal performance, Medicine and Science in Sports and Exercise, 30, 4, pp. 596-608, (1998); Konradsen L., Voigt M., Hojsgaard C., Ankle inversion injuries: The role of the dynamic defense mechanism, American Journal of Sports Medicine, 25, 1, pp. 54-58, (1997); Alt W., Lohrer H., Gollhofer A., Functional properties of adhesive ankle taping: Neuromuscular and mechanical effects before and after exercise, Foot and Ankle International, 20, 4, pp. 238-245, (1999); Rozzi S.L., Yuktanandana P., Pincivero D.M., Et al., Role of fatigue on proprioception and neuromuscular control, Proprioception and Neuromuscular Control in Joint Stability, pp. 375-383, (2000); McHugh M.P., Tyler T.F., Mirabella M.R., Mullaney M.J., Nicholas S.J., The effectiveness of a balance training intervention in reducing the incidence of noncontact ankle sprains in high school football players, American Journal of Sports Medicine, 35, 8, pp. 1289-1294, (2007); Tropp H., Ekstrand J., Gillquist J., Stabilometry in functional instability of the ankle and its value in predicting injury, Medicine and Science in Sports and Exercise, 16, 1, pp. 64-66, (1984); Cordova M.L., Scott B.D., Ingersoll C.D., Leblanc M.J., Effects of ankle support on lower-extremity functional performance: A meta-analysis, Medicine and Science in Sports and Exercise, 37, 4, pp. 635-641, (2005); Handoll H.H.G., Rowe B.H., Quinn K.M., Et al., Interventions for preventing ankle ligament injuries, Cochrane Database Syst Rev, 3, (2005); Manfroy P.P., Ashton-Miller J.A., Wojtys E.M., The effect of exercise, prewrap, and athletic tape on the maximal active and passive ankle resistance to ankle inversion, American Journal of Sports Medicine, 25, 2, pp. 156-163, (1997); Pederson T.S., Ricard M.D., Merrill G., Schulthies S.S., Allsen P.E., The effects of spatting and ankle taping on inversion before and after exercise, Journal of Athletic Training, 32, 1, pp. 29-33, (1997); Rarick G.L., Bigley G., Karst R., Et al., The measurable support of the ankle joint by conventional methods of taping, J Bone Joint Surg Am, 44 A, pp. 1183-1191, (1962); Ricard M.D., Sherwood S., Schulthies S.S., Et al., Effects of tape and exercise on dynamic ankle inversion, J Athl Train, 35, pp. 31-37, (2000); Rovere G.D., Clarke T.J., Yates C.S., Et al., Retrospective comparison of taping and ankle stabilizers in preventing ankle injuries, Am J Sports Med, 16, pp. 228-233, (1988); Robbins S., Waked E., Foot position awareness: The effect of footwear on instability, excessive impact, and ankle spraining, Critical Reviews in Physical and Rehabilitation Medicine, 9, 1, pp. 53-74, (1997); Andreasson G., Edberg B., Rheological properties of medical tapes used to prevent athletic injuries, Textile Res J, 4, pp. 225-231, (1983); Bragg R.W., Macmahon J.M., Overom E.K., Yerby S.A., Matheson G.O., Carter D.R., Andriacchi T.P., Failure and fatigue characteristics of adhesive athletic tape, Medicine and Science in Sports and Exercise, 34, 3, pp. 403-410, (2002); Morris H.H., Musnicki W., The effect of taping on ankle mobility following moderate exercise, J Sports Med Phys Fitness, 11, pp. 37-42, (1989); Olmsted L.C., Vela L.I., Denegar C.R., Hertel J., Prophylactic Ankle Taping and Bracing: A Numbers-Needed-to-Treat and Cost-Benefit Analysis, Journal of Athletic Training, 39, 1, pp. 95-100, (2004); Purcell S.B., Schuckmann B.E., Docherty C.L., Et al., Differences in ankle range of motion before and after exercise in 2 tape conditions, Am J Sports Med, 37, pp. 383-389, (2009); Sawkins K., Refshauge K., Kilbreath S., Raymond J., The placebo effect of ankle taping in ankle instability, Medicine and Science in Sports and Exercise, 39, 5, pp. 781-787, (2007); Verhagen E.A.L.M., Van Der Beek A.J., Van Mechelen W., The effect of tape, braces and shoes on ankle range of motion, Sports Medicine, 31, 9, pp. 667-677, (2001); Robbins S., Waked E., Rappel R., Ankle taping improves proprioception before and after exercise in young men, British Journal of Sports Medicine, 29, 4, pp. 242-247, (1995); Stoffel K., Nicholls R.L., Winata A.R., Et al., Effect of ankle taping on knee and ankle joint biomechanics in sporting tasks, Med Sci Sports Exerc, 42, pp. 2089-2097, (2010); Refshauge K.M., Kilbreath S.L., Raymond J., The effect of recurrent ankle inversion sprain and taping on proprioception at the ankle, Medicine and Science in Sports and Exercise, 32, 1, pp. 10-15, (2000); Greene T.A., Hillman S.K., Comparison of support provided by a semirigid orthosis and adhesive ankle taping before, during, and after exercise, American Journal of Sports Medicine, 18, 5, pp. 498-506, (1990); Firer P., Effectiveness of taping for the prevention of ankle ligament sprains, British Journal of Sports Medicine, 24, 1, pp. 47-50, (1990); Cordova M.L., Ingersoll C.D., Leblanc M.J., Influence of ankle support on joint range motion before and after exercise: A meta-analysis, J Orthop Sports Phys Ther, 30, pp. 170-177, (2000); Laughman R.K., Carr T.A., Chao E.Y., Three-dimensional kinematics of the taped ankle before and after exercise, American Journal of Sports Medicine, 8, 6, pp. 425-431, (1980); Seitz C., Goldfuss A.J., The effect of taping and exercise on passive foot inversion and ankle plantarflexion, J Athl Train, 19, pp. 178-182, (1984); Fumich R.M., Ellison A.E., Guerin G.J., Et al., The measured effect of taping on combined foot and ankle motion before and after exercise, Am J Sports Med, 9, pp. 165-169, (1981); Myburgh K.H., Vaughan C.L., Isaacs S.K., The effects of ankle guards and taping on joint motion before, during, and after a squash match, American Journal of Sports Medicine, 12, 6, pp. 441-446, (1984); Dizon J.M., Reyes J.J., A systematic review on the effectiveness of external ankle supports in the prevention of inversion ankle sprains among elite recreational players, J Sci Med Sport, 13, pp. 309-317, (2010)","R. Best; Department of Orthopedic Sports Medicine, Medical Clinic, University of Tübingen, 72076 Tübingen, Hoppe-Seyler-Straße 6, Germany; email: raymond.best@med.uni-tuebingen.de","","","15363724","","CJSME","24080786","English","Clin. J. Sport Med.","Article","Final","","Scopus","2-s2.0-84891847315" "Adamec J.; Mai V.; Graw M.; Schneider K.; Hempel J.-M.; Schöpfer J.","Adamec, Jiri (36187698400); Mai, Vera (50161980200); Graw, Matthias (55072628000); Schneider, Klaus (57198322435); Hempel, John-Martin (7006348376); Schöpfer, Jutta (8512582100)","36187698400; 50161980200; 55072628000; 57198322435; 7006348376; 8512582100","Biomechanics and injury risk of a headbutt","2013","International Journal of Legal Medicine","127","1","","103","110","7","14","10.1007/s00414-011-0617-y","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84872423596&doi=10.1007%2fs00414-011-0617-y&partnerID=40&md5=a550a89cff8089823bd7744c26aed5a1","Institute of Legal Medicine, Ludwig-Maximilian University, Munich, Germany; Institute of Sports Sciences and Sports, University of the Federal Armed Forces, Munich, Germany; Department of Otorhinolaryngology Head and Neck Surgery, Ludwig-Maximilian University, Munich, Germany","Adamec J., Institute of Legal Medicine, Ludwig-Maximilian University, Munich, Germany; Mai V., Institute of Legal Medicine, Ludwig-Maximilian University, Munich, Germany; Graw M., Institute of Legal Medicine, Ludwig-Maximilian University, Munich, Germany; Schneider K., Institute of Sports Sciences and Sports, University of the Federal Armed Forces, Munich, Germany; Hempel J.-M., Department of Otorhinolaryngology Head and Neck Surgery, Ludwig-Maximilian University, Munich, Germany; Schöpfer J., Institute of Legal Medicine, Ludwig-Maximilian University, Munich, Germany","Headbutt is a relevant type of a criminal assault that can result in injuries. The aim of this study was to collect basic biomechanical data and assess the injury risk associated with a headbutt. Series of measurements were carried out with volunteers with and without relevant soccer heading experience, and the impact velocity of the striking head was measured. A soccer ball was used as a surrogate of the stationary victim's head. Two scenarios were considered: one corresponding to the typical headbutt situation, i.e. short movement of the assailant's head without backswing, and one representing the worst case, i.e. the most severe head impact without time or space constraints for the assailant. The results as well as epidemiological data from court cases and a large Munich's university clinic show that a typical headbutt is not likely to lead to life-threatening injuries, but bony injuries of the face can easily occur. Under certain circumstances (support of the victim's head, secondary impact on the ground etc.), severe injuries with potentially lethal outcomes are possible. A thorough analysis of each case is thus an imperative. The (soccer) heading experience does not influence the velocity of the headbutt. © 2011 Springer-Verlag.","Biomechanical tolerance; Biomechanics; Head injury; Headbutt; Injury risk","Adult; Biomechanics; Facial Bones; Female; Forensic Medicine; Head Injuries, Closed; Humans; Injury Severity Score; Male; Models, Biological; Skull Fractures; Violence; MLCS; MLOWN; adult; article; biological model; biomechanics; facial bone; female; forensic medicine; head injury; human; injury; injury scale; male; pathology; skull fracture; violence","Smith M.S., Dyson R.J., Hale T., Janaway L., Development of a boxing dynamometer and its punch force discrimination efficacy, J Sports Sci, 18, pp. 445-450, (2000); Waliko T.J., Viano D.C., Bir C.C., Biomechanics of the head for Olympic boxer punches to the face, Br J Sports Med, 39, pp. 710-719, (2005); Shewchenko W., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football. Part 1: Development of biomechanical methods to investigate head response, Br J Sports Med, 39, SUPPL. I, (2005); Bauer J.A., Thomas T.S., Cauraugh J.H., Kaminski T.W., Hass C.J., Impact forces and neck muscle activity in heading by collegiate female soccer players, J Sports Sci, 19, pp. 171-179, (2001); Goldsmith W., Plunkett J., A biomechanical analysis of the causes of traumatic brain injury in infants and children, Am J Forensic Med Pathol, 25, pp. 89-100, (2004); McIntosh A.S., McCrory P., Comerford J., The dynamics of concussive head impacts in rugby and Australian rules football, Med Sci Sports Exerc, 32, 12, pp. 1980-1984, (2000); Broglio S.P., Sosnoff J.J., Shin S., He X., Alcaraz C., Zimmerman J., Head impacts during high school football: A biomechanical assessment, J Athl Train, 44, 4, pp. 342-349, (2009); Viano D.C., Casson I.R., Pellman E.J., Bir C.A., Zhang L., Sherman D.C., Boitano M.A., Concussion in professional football: Comparison with boxing head impacts - Part 10, Neurosurgery, 57, pp. 1154-1172, (2005); Stan A.-C., Guenther D., Fieguth A., Hori A., Traumatic ponto-medullary tear: A case report, For Sci Int, 77, pp. 37-43, (1996); Enoch D.A., Gilham M.I., MacFarlane R., Antoun N., Sule O., A troublesome head-butt, Lancet Infect Dis, 7, (2007); Rimal D., Thapa S.R., Munasinghe N., Errington M., An unusual presentation of a minor head injury sustained during a game of rugby, Emerg Med J, 24, 7, pp. 485-486, (2007); Viano D.C., Parenteau C.S., Analysis of head impacts causing neck compression injury, Traffic Inj Prev, 9, pp. 144-152, (2008); Clauser C.E., McConville J.T., Young J.W., Weight, volume, and center of mass of segments of the human body, Technical Report AMRL-TR-69-70, Aerospace Medical Research Laboratory, (1969); Schneider D.C., Nahum A.M., Impact studies of facial bones and skull, Proceedings of the 16th Stapp Car Crash Conference, pp. 186-203, (1972); Advani S., Powell W., Huston J., Ojala S., Human head impact response - Experimental data and analytical simulations, Proceedings of the International Conference on the Biomechanics of Impact (IRCOBI), Berlin, pp. 153-162, (1975); Nahum A.M., Gatts J.D., Gadd C.W., Danforth J.P., Impact tolerance of the face and skull, Proceedings of the 12th Stapp Car Crash Conference, Detroit, pp. 302-317, (1968); Allsop D., Perl T.R., Warner C.Y., Force/deflection and fracture characteristics of the temporoparietal region of the human head, Proceedings of the 35th Stapp Car Crash Conference, Detroit, pp. 269-278, (1991); Advani S.H., Ommaya A.K., Yang W.J., Human Body Dynamics, (1982); Hampson D., Facial injury: A review of biomechanical studies and test procedures for facial injury assessment, J Biomech, 28, pp. 1-7, (1995); Nyquist G.W., Cavanaugh J.M., Goldberg S.J., King A.I., Facial impact tolerance and response, Proceedings of the 30th Stapp Car Crash Conference, Detroit, pp. 379-400, (1986); Gadd C.W., Use of weighted-impulse criterion for establishing injury hazard, Proceedings of the 10th Stapp Car Crash Conference, Detroit, pp. 164-174, (1966); Newman J.A., Shewchenko N., Welbourne E., A proposed new biomechanical head injury assessment function - The maximum power index, Stapp Car Crash J, 44, pp. 215-247, (2000); Ommaya A.K., Goldsmith W., Thibault L., Biomechanics and neuropathology of adult and paediatric head injury: Review, Br J Neurosurg, 16, 3, pp. 220-242, (2002); Bremer S., Praxl N., Schonpflug M., Schneider K., Graw M., The human punch - A forensic biomechanical research, For Sci Int, 136, (2003); Smith P.K., Hamil J., The effect of punching glove type and skill level on momentum transfer, J Hum Movement Stud, 12, pp. 153-161, (1986); Schneider K., Der Einfluß motorischer und mechanischer Stoßbedingungen auf das Verletzungsrisiko beim Fußball-Kopfstoß, Sportwissenschaft, 15, pp. 183-192, (1985); Yoganandan N., Pintar F.A., Biomechanics of temporo-parietal skull fracture, Clin Biomech, 19, pp. 225-239, (2004)","J. Adamec; Institute of Legal Medicine, Ludwig-Maximilian University, Munich, Germany; email: jiri.adamec@med.uni-muenchen.de","","","14371596","","IJLME","21922302","English","Int. J. Leg. Med.","Article","Final","","Scopus","2-s2.0-84872423596" "Whyte E.F.; Richter C.; O'Connor S.; Moran K.A.","Whyte, E.F. (35088875900); Richter, C. (7202686489); O'Connor, S. (56666947100); Moran, K.A. (16245608800)","35088875900; 7202686489; 56666947100; 16245608800","Effects of a dynamic core stability program on the biomechanics of cutting maneuvers: A randomized controlled trial","2018","Scandinavian Journal of Medicine and Science in Sports","28","2","","452","462","10","15","10.1111/sms.12931","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85023164056&doi=10.1111%2fsms.12931&partnerID=40&md5=418d312e22a1616c07a2f23ceb18108a","School of Health and Human Performance, Dublin City University, Glasnevin, Dublin, Ireland; Sports Surgery Clinic, Dublin, Ireland","Whyte E.F., School of Health and Human Performance, Dublin City University, Glasnevin, Dublin, Ireland; Richter C., Sports Surgery Clinic, Dublin, Ireland; O'Connor S., School of Health and Human Performance, Dublin City University, Glasnevin, Dublin, Ireland; Moran K.A., School of Health and Human Performance, Dublin City University, Glasnevin, Dublin, Ireland","Deficits in trunk control predict ACL injuries which frequently occur during high-risk activities such as cutting. However, no existing trunk control/core stability program has been found to positively affect trunk kinematics during cutting activities. This study investigated the effectiveness of a 6-week dynamic core stability program (DCS) on the biomechanics of anticipated and unanticipated side and crossover cutting maneuvers. Thirty-one male, varsity footballers participated in this randomized controlled trial. Three-dimensional trunk and lower limb biomechanics were captured in a motion analysis laboratory during the weight acceptance phase of anticipated and unanticipated side and crossover cutting maneuvers at baseline and 6-week follow-up. The DCS group performed a DCS program three times weekly for 6 weeks in a university rehabilitation room. Both the DCS and control groups concurrently completed their regular practice and match play. Statistical parametric mapping and repeated measures analysis of variance were used to determine any group (DCS vs control) by time (pre vs post) interactions. The DCS resulted in greater internal hip extensor (P=.017, η2=0.079), smaller internal knee valgus (P=.026, η2=0.076), and smaller internal knee external rotator moments (P=.041, η2=0.066) during anticipated side cutting compared with the control group. It also led to reduced posterior ground reaction forces for all cutting activities (P=.015-.030, η2=0.074-0.105). A 6-week DCS program did not affect trunk kinematics, but it did reduce a small number of biomechanical risk factors for ACL injury, predominantly during anticipated side cutting. A DCS program could play a role in multimodal ACL injury prevention programs. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd","anterior cruciate ligament; anticipation; crossover cutting; side cutting; statistical parametric mapping; trunk control","Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Humans; Lower Extremity; Male; Movement; Physical Conditioning, Human; Soccer; Torso; Young Adult; anterior cruciate ligament injury; biomechanics; controlled study; exercise; human; lower limb; male; movement (physiology); physiology; randomized controlled trial; soccer; trunk; young adult","Ardern C.L., Taylor N.F., Feller J.A., Webster K.E., Fifty-five per cent return to competitive sport following anterior cruciate ligament reconstruction surgery: an updated systematic review and meta-analysis including aspects of physical functioning and contextual factors, Br J Sports Med, 48, pp. 1543-1552, (2014); Oiestad B.E., Holm I., Aune A.K., Et al., Knee function and prevalence of knee osteoarthritis after anterior cruciate ligament reconstruction: a prospective study with 10 to 15 years of follow-up, Am J Sports Med, 38, pp. 2201-2210, (2010); Walden M., Atroshi I., Magnusson H., Wagner P., Hagglund M., Prevention of acute knee injuries in adolescent female football players: cluster randomised controlled trial, BMJ, 344, (2012); Gilchrist J., Mandelbaum B.R., Melancon H., Et al., A randomized controlled trial to prevent noncontact anterior cruciate ligament injury in female collegiate soccer players, Am J Sports Med, 36, pp. 1476-1483, (2008); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes. A prospective study, Am J Sports Med, 27, pp. 699-706, (1999); Sugimoto D., Myer G.D., Foss K.D., Hewett T.E., Specific exercise effects of preventive neuromuscular training intervention on anterior cruciate ligament injury risk reduction in young females: meta-analysis and subgroup analysis, Br J Sports Med, 49, pp. 282-289, (2015); Norcross M.F., Johnson S.T., Bovbjerg V.E., Koester M.C., Hoffman M.A., Factors influencing high school coaches' adoption of injury prevention programs, J Sci Med Sport, 19, pp. 299-304, (2016); Pappas E., Nightingale E.J., Simic M., Ford K.R., Hewett T.E., Myer G.D., Do exercises used in injury prevention programmes modify cutting task biomechanics? A systematic review with meta-analysis, Br J Sports Med, 49, pp. 673-680, (2015); Jamison S.T., McNeilan R.J., Young G.S., Givens D.L., Best T.M., Chaudhari A.M., Randomized controlled trial of the effects of a trunk stabilization program on trunk control and knee loading, Med Sci Sports Exerc, 44, pp. 1924-1934, (2012); Krosshaug T., Slauterbeck J.R., Engebretsen L., Bahr R., Biomechanical analysis of anterior cruciate ligament injury mechanisms: three-dimensional motion reconstruction from video sequences, Scand J Med Sci Sports, 17, pp. 508-519, (2007); Walden M., Krosshaug T., Bjorneboe J., Andersen T.E., Faul O., Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: a systematic video analysis of 39 cases, Br J Sports Med, 49, pp. 1452-1460, (2015); Hewett T.E., Torg J.S., Boden B.P., Video analysis of trunk and knee motion during non-contact anterior cruciate ligament injury in female athletes: lateral trunk and knee abduction motion are combined components of the injury mechanism, Br J Sports Med, 43, pp. 417-422, (2009); Hewett T.E., Ford K.R., Hoogenboom B.J., Myer G.D., Understanding and preventing acl injuries: current biomechanical and epidemiologic considerations – update 2010, N Am J Sports Phys Ther, 5, pp. 234-251, (2010); Zazulak B.T., Hewett T.E., Reeves N.P., Goldberg B., Cholewicki J., Deficits in neuromuscular control of the trunk predict knee injury risk: a prospective biomechanical-epidemiologic study, Am J Sports Med, 35, pp. 1123-1130, (2007); Leppanen M., Pasanen K., Kujala U.M., Et al., Stiff landings are associated with increased ACL injury risk in young female basketball and floorball players, Am J Sports Med, 45, pp. 386-393, (2017); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Sell T.C., Ferris C.M., Abt J.P., Et al., Predictors of proximal tibia anterior shear force during a vertical stop-jump, J Orthop Res, 25, pp. 1589-1597, (2007); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, pp. 930-935, (1995); Oh Y.K., Lipps D.B., Ashton-Miller J.A., Wojtys E.M., What strains the anterior cruciate ligament during a pivot landing?, Am J Sports Med, 40, pp. 574-583, (2012); Shimokochi Y., Ambegaonkar J.P., Meyer E.G., Lee S.Y., Shultz S.J., Changing sagittal plane body position during single-leg landings influences the risk of non-contact anterior cruciate ligament injury, Knee Surg Sports Traumatol Arthrosc, 21, pp. 888-897, (2013); Mornieux G., Gehring D., Furst P., Gollhofer A., Anticipatory postural adjustments during cutting manoeuvres in football and their consequences for knee injury risk, J Sports Sci, 32, pp. 1255-1262, (2014); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Russo K.A., The effect of technique change on knee loads during sidestep cutting, Med Sci Sports Exerc, 39, pp. 1765-1773, (2007); Jamison S.T., Pan X., Chaudhari A.M., Knee moments during run-to-cut maneuvers are associated with lateral trunk positioning, J Biomech, 45, pp. 1881-1885, (2012); Pataky T.C., Robinson M.A., Vanrenterghem J., Vector field statistical analysis of kinematic and force trajectories, J Biomech, 46, pp. 2394-2401, (2013); Richter C., O'Connor N.E., Marshall B., Moran K., Comparison of discrete-point vs. dimensionality-reduction techniques for describing performance-related aspects of maximal vertical jumping, J Biomech, 47, pp. 3012-3017, (2014); Hoffmann T.C., Glasziou P.P., Boutron I., Et al., Better reporting of interventions: template for intervention description and replication (TIDieR) checklist and guide, BMJ, 348, (2014); Weltin E., Gollhofer A., Mornieux G., Effects of perturbation or plyometric training on core control and knee joint loading in women during lateral movements, Scand J Med Sci Sports, 27, pp. 299-308, (2017); Steffen K., Myklebust G., Olsen O.E., Holme I., Bahr R., Preventing injuries in female youth football – a cluster-randomized controlled trial, Scand J Med Sci Sports, 18, pp. 605-614, (2008); Kristianslund E., Krosshaug T., van den Bogert A.J., Effect of low pass filtering on joint moments from inverse dynamics: implications for injury prevention, J Biomech, 45, pp. 666-671, (2012); Winter D.A., Biomechanics and Motor Control of Human Movement, (2009); Franklyn-Miller A., Richter C., King E., Et al., Athletic groin pain (part 2): a prospective cohort study on the biomechanical evaluation of change of direction identifies three clusters of movement patterns, Br J Sports Med, 51, pp. 460-468, (2017); Patla A.E., Adkin A., Ballard T., Online steering: coordination and control of body center of mass, head and body reorientation, Exp Brain Res, 129, pp. 629-634, (1999); Lee M.J., Lloyd D.G., Lay B.S., Bourke P.D., Alderson J.A., Effects of different visual stimuli on postures and knee moments during sidestepping, Med Sci Sports Exerc, 45, pp. 1740-1748, (2013); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Changing sidestep cutting technique reduces knee valgus loading, Am J Sports Med, 37, pp. 2194-2200, (2009); Khayambashi K., Ghoddosi N., Straub R.K., Powers C.M., Hip muscle strength predicts noncontact anterior cruciate ligament injury in male and female athletes: a prospective study, Am J Sports Med, 44, pp. 355-361, (2016); van den Bogert A.J., McLean S.G., Comment: effect of fatigue on knee kinetics and kinematics in stop-jump tasks, Am J Sports Med, 34, pp. 313-314, (2006); Yu B., Chappell J.J., Garrett W.E., Responses to letters to the editor, American Journal of Sports Medicine, 34, pp. 312-313, (2006); Chappell J.D., Herman D.C., Knight B.S., Kirkendall D.T., Garrett W.E., Yu B., Effect of fatigue on knee kinetics and kinematics in stop-jump tasks, Am J Sports Med, 33, pp. 1022-1029, (2005); Cerulli G., Benoit D.L., Lamontagne M., Caraffa A., Liti A., In vivo anterior cruciate ligament strain behaviour during a rapid deceleration movement: case report, Knee Surg Sports Traumatol Arthrosc, 11, pp. 307-311, (2003); Richter C., O'Connor N.E., Marshall B., Moran K., Clustering vertical ground reaction force curves produced during countermovement jumps, J Biomech, 47, pp. 2385-2390, (2014); Donnelly C.J., Chinnasee C., Weir G., Sasimontonkul S., Alderson J., Joint dynamics of rear- and fore-foot unplanned sidestepping, J Sci Med Sport, 20, pp. 32-37, (2017); Joy E.A., Taylor J.R., Novak M.A., Chen M., Fink B.P., Porucznik C.A., Factors influencing the implementation of anterior cruciate ligament injury prevention strategies by girls soccer coaches, J Strength Cond Res, 27, pp. 2263-2269, (2013); Sugimoto D., Myer G.D., Bush H.M., Klugman M.F., Medina McKeon J.M., Hewett T.E., Compliance with neuromuscular training and anterior cruciate ligament injury risk reduction in female athletes: a meta-analysis, J Athl Train, 47, pp. 714-723, (2012); Brown S.R., Brughelli M., Hume P.A., Knee mechanics during planned and unplanned sidestepping: a systematic review and meta-analysis, Sports Med, 44, pp. 1573-1588, (2014)","E.F. Whyte; School of Health and Human Performance, Dublin City University, Glasnevin, Dublin, Ireland; email: enda.whyte@dcu.ie","","Blackwell Munksgaard","09057188","","SMSSE","28605148","English","Scand. J. Med. Sci. Sports","Article","Final","","Scopus","2-s2.0-85023164056" "Segers V.; De Clercq D.; Janssens M.; Bourgois J.; Philippaerts R.","Segers, V. (24073308600); De Clercq, D. (7007178208); Janssens, M. (7005628608); Bourgois, J. (7006075759); Philippaerts, R. (6602176302)","24073308600; 7007178208; 7005628608; 7006075759; 6602176302","Running economy in early and late maturing youth soccer players does not differ","2008","British Journal of Sports Medicine","42","4","","289","294","5","15","10.1136/bjsm.2007.035915","https://www.scopus.com/inward/record.uri?eid=2-s2.0-42249094533&doi=10.1136%2fbjsm.2007.035915&partnerID=40&md5=eeafe7c86b8138f1085c9b6fa0dfdc63","Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium; Centre for Sports Medicine, Ghent University Hospital, Ghent, Belgium; Ghent University, Faculty of Medicine and Health Sciences, Department of Movement and Sports Sciences, 9000 Ghent, Watersportlaan 2, Belgium","Segers V., Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium; De Clercq D., Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium; Janssens M., Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium; Bourgois J., Centre for Sports Medicine, Ghent University Hospital, Ghent, Belgium; Philippaerts R., Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium, Ghent University, Faculty of Medicine and Health Sciences, Department of Movement and Sports Sciences, 9000 Ghent, Watersportlaan 2, Belgium","Purpose: The aim of this study was to investigate the influence of maturity on running economy in a population of young soccer players. Methods: 13 boys (mean age 14.3 years) active in soccer were divided into two groups: 6 early and 7 late maturers. Anthropometrical characteristics, respiratory exchange ratio, heart rate and maximal oxygen uptake were measured. Running economy was assessed at three submaximal running speeds (8, 9.5 and 11 km/h). Allometric coefficients were calculated and used to diminish the effect of body mass. In addition, running style was analysed biomechanically (stride length and meaningful kinematic values). Results: There was no significant difference in the running economy of early and late maturing soccer players, nor any significant differences in mass adjusted physiological values. Therefore physiological differences cannot explain why late maturers succeed in keeping up with early maturers. Late maturing boys take longer relative strides, and have more anteversion of the thigh at heel contact, a smaller knee-angle during swing-phase and a lower mass moment of inertia. Conclusion: Running style seems to be an important determinant in running economy of children.","","Adolescent; Adolescent Development; Analysis of Variance; Athletic Performance; Biomechanics; Exercise Test; Exercise Tolerance; Humans; Male; Oxygen Consumption; Puberty; Running; Soccer; adolescent; allometry; anthropometry; article; biomechanics; body mass; heart rate; heel; human; human experiment; kinematics; knee; lung gas exchange; male; mass; normal human; running; sport; thigh","Beunen G., Malina R.M., Growth and biological maturation: Relevance to athletic performance, The child and adolescent athlete, pp. 3-24, (1996); Malina R.M., Physical growth and biological maturation of young athletes, Exerc Sport Sci Rev, 22, pp. 389-433, (1994); Rowland T.W., Exercise and children's health, (1990); Williams A.M., Reilly T., Talent identification and development in soccer, J Sport Sci, 18, pp. 657-667, (2000); Malina R.M., Bouchard C., Bar-Or O., Growth, maturation and physical activity, (2004); Rowland T.W., Developmental exercise physiology, (1996); Malina R.M., Beunen G., Matching opponents in youth sports, The child and adolescent athlete, pp. 202-213, (1996); Malina R.M., Pena Reyes M.E., Eisenmann J.C., Et al., Height, mass and skeletal maturity of elite Portuguese soccer players aged 11-16 years, J Sport Sci, 18, pp. 685-693, (2000); Drust B., Reilly T., Cable N.T., Physiological responses to laboratory-based soccer-specific ad continuous exercise, J Sport Sci, 18, pp. 885-892, (2000); Reilly T., Bangsbo J., Franks A., Antropometric and physiological predispositions for elite soccer, Journal of Sports Sciences, 18, pp. 669-683, (2000); Philippaerts R.M., Vaeyens R., Janssens M., Et al., The relationship between peak height velocity and physical performance in youth soccer players, J Sport Sci, 24, pp. 221-230, (2006); Maliszewski A.F., Freedson P.S., Is running economy different between adults and children?, Pediatr Exerc Sci, 8, pp. 351-360, (1996); Rowland T.W., Auchinachie J.A., Keenam T.J., Et al., Physiologic responses to treadmill running in adult and prepubertal males, Int J Sports Med, 8, pp. 292-297, (1987); Rowland T.W., Green G.M., Physiological responses to treadmill exercise in females: Adult-child differences, MedSci Sport Exer, 20, pp. 474-478, (1988); Kemper H.C.G., Verschuur R., Ritmeester J.W., Longitudinal development of growth and fitness in early and late maturing teenagers, Pediatrician, 14, pp. 219-225, (1987); Armstrong N., Welsman J.R., Kirby B.J., Submaximal exercise and maturation in 12-year-olds, J Sport Sci, 17, pp. 107-114, (1999); Bergh U., Sjodin B., Forsberg A., Et al., The relationship between body mass and oxygen uptake during running in humans, MedSci Sport Exer, 23, pp. 205-211, (1991); Armstrong N., Welsman J., Assessment and interpretation of aerobic fitness in children and adolescents, Exerc Sport Sci Rev, 22, pp. 435-476, (1996); Chamari K., Moussa-Chamari I., Boussaidi L., Et al., Appropriate interpretation of aerobic capacity: Allometric scaling in adult and young soccer players, Br J Sports Med, 39, pp. 97-101, (2005); Nevill A.M., Holder R.M., Scaling, normalizing and per ratio standards: An allometric approach, J Appl Physiol, 79, pp. 1027-1031, (1995); Nevill A.M., Holder R.L., Baxter-Jones A., Et al., Modeling developmental changes in strength and aerobic power in children, J Appl Physiol, 84, pp. 963-970, (1998); Welsman J.R., Armstrong N., Kirby B.J., Et al., Scaling VO 2 for differences in body size, Med Sci Sport Exer, 28, pp. 259-265, (1996); Vaeyens R., Malina R.M., Janssens M., Et al., A multidisciplinary selection model for youth soccer: The Ghent Youth Soccer Project, Br J Sports Med, 40, pp. 928-934, (2006); Brisswalter J., Legros P., Durand M., Running economy, preferred step length correlated to body dimensions in elite middle distance runners, J Sport Med Phys Fit, 36, pp. 7-15, (1996); Williams K.R., Cavanagh P.R., Relationship between distance running mechanics, running economy and performance, J Appl Physiol, 63, pp. 1236-1245, (1987); Tanner J.M., Whitehouse R.H., Marshall W.A., Et al., Assessment of skeletal maturity and prediction of adult height (TW 2 method), (1975); Tanner J.M., Growth at adolescence, (1962); Lohman T.G., Roche A.F., Martorell R., Anthropometric standardization reference manual, (1988); Parizkova J., Body fat and physical fitness, (1977); Jensen R.K., Body segment mass, radius of gyration proportions of children, J Biomech, 19, pp. 359-368, (1986); Hall S.J., Basic biomechanics, (1995); Unnithan V.B., Murray L.A., Timmons J.A., Et al., Reproducibility of cardiorespiratory measurements during submaximal and maximal running in children, Br J Sports Med, 29, pp. 66-71, (1995); Baker R., Hausch A., McDowell B., Reducing the variability of oxygen consumption measurements, Gait Posture, 13, pp. 202-209, (2001); Morgan D., Factors affecting running economy, Sports Med, 7, pp. 310-330, (1989); Helgerud J., Engen L.C., Wisloff U., Et al., Aerobic training improves soccer performance, Med Sci Sport Exer, 33, pp. 1925-1931, (2001); Wisloff U., Helgerud J., Hoff J., Strength and endurance of elite soccer players, Med Sci Sport Exer, 30, pp. 432-467, (1998)","R. Philippaerts; Ghent University, Faculty of Medicine and Health Sciences, Department of Movement and Sports Sciences, 9000 Ghent, Watersportlaan 2, Belgium; email: renaat.philippaerts@ugent.be","","","03063674","","BJSMD","18390772","English","Br. J. Sports Med.","Article","Final","","Scopus","2-s2.0-42249094533" "Della Villa F.; Di Paolo S.; Santagati D.; Della Croce E.; Lopomo N.F.; Grassi A.; Zaffagnini S.","Della Villa, Francesco (55780654000); Di Paolo, Stefano (57209464265); Santagati, Dario (57223254597); Della Croce, Edoardo (57223256739); Lopomo, Nicola Francesco (55120444000); Grassi, Alberto (57205264407); Zaffagnini, Stefano (7003438311)","55780654000; 57209464265; 57223254597; 57223256739; 55120444000; 57205264407; 7003438311","A 2D video-analysis scoring system of 90° change of direction technique identifies football players with high knee abduction moment","2022","Knee Surgery, Sports Traumatology, Arthroscopy","30","11","","3616","3625","9","15","10.1007/s00167-021-06571-2","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105386998&doi=10.1007%2fs00167-021-06571-2&partnerID=40&md5=720b17359084cfb8724d269e5fc48bb9","Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy; Department for Life Quality Studies QUVI, Università Di Bologna, Via Giulio Cesare Pupilli, 1, BO, Bologna, 40136, Italy; Department of Information Engineering, University of Brescia, Brescia, Italy; 2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy; Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy","Della Villa F., Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy; Di Paolo S., Department for Life Quality Studies QUVI, Università Di Bologna, Via Giulio Cesare Pupilli, 1, BO, Bologna, 40136, Italy; Santagati D., Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy; Della Croce E., Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy; Lopomo N.F., Department of Information Engineering, University of Brescia, Brescia, Italy; Grassi A., 2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy; Zaffagnini S., 2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy","Purpose: Abnormal joint biomechanics and poor neuromuscular control are modifiable risk factors for Anterior Cruciate Ligament (ACL) injury. Although 3D motion capture is the gold standard for the biomechanical evaluation of high-speed multidirectional movements, 2D video analysis is a growing-interest alternative because of its higher cost-effectiveness and interpretability. The aim of the present study was to explore the possible association between a 2D evaluation of a 90° change of direction (COD) and the KAM measured with gold standard 3D motion analysis. Methods: Thirty-four competitive football (soccer) players (age 22.8 ± 4.1, 18 male and 16 females) were enrolled. Each athlete performed a series of pre-planned 90° COD at the maximum speed possible in a laboratory equipped with artificial turf. 3D motion analysis was recorded using 10 stereophotogrammetric cameras, a force platform, and three high-speed cameras. The 2D evaluation was performed through a scoring system based on the video analysis of frontal and sagittal plane joint kinematics. Five scoring criteria were adopted: limb stability (LS), pelvis stability (PS), trunk stability (TS), shock absorption (SA), and movement strategy (MS). For each criterion, a sub-score of 0/2 (non-adequate), 1/2 (partially adequate), or 2/2 (adequate) was attributed to the movement, based on objective measurements. The intra-rater and inter-rater reliability were calculated for each criterion and the total score. The Knee Abduction Moment (KAM) was extracted from the 3D motion analysis and grouped according to the results of the 2D evaluation. Results: Excellent intra-rater reliability (ICC > 0.88) and good-to-excellent inter-rater reliability (ICC 0.68–0.92) were found. Significantly higher KAM was found for athletes obtaining a 0/2 score compared to those obtaining a 2/2 score in all the sub-criteria and the total score (20–47% higher, p < 0.05). The total score and the LS score showed the best discriminative power between the three groups. Conclusion: The 2D video-analysis scoring system here described was a simple and effective tool to discriminate athletes with high and low KAM in the assessment of a 90° COD and could be a potential method to identify athletes at high risk of non-contact ACL injury. Level of evidence: IV. © 2021, The Author(s).","2D video analysis; ACL; ACL injury prevention; Cut maneuver; Return to sport","Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Female; Football; Humans; Knee Joint; Male; Reproducibility of Results; Soccer; anterior cruciate ligament injury; biomechanics; female; football; human; injury; knee; male; reproducibility; soccer","Ardern C.L., Ekas G.R., Grindem H., Moksnes H., Anderson A., Chotel F., Cohen M., Forssblad M., Ganley T.J., Feller J.A., Karlsson J., Kocher M.S., LaPrade R.F., McNamee M., Mandelbaum B., Micheli L., Mohtadi N.G.H., Reider B., Roe J.P., Seil R., Siebold R., Silvers-Granelli H.J., Soligard T., Witvrouw E., Engebretsen L., Prevention, diagnosis and management of paediatric ACL injuries, Br J Sports Med, 52, pp. 1297-1298, (2018); Bahr R., Why screening tests to predict injury do not work-and probably never will…: a critical review, Br J Sports Med, 50, pp. 776-780, (2016); Bates N.A., Myer G.D., Hale R.F., Schilaty N.D., Hewett T.E., Prospective frontal plane angles used to predict ACL strain and identify those at high risk for sports-related ACL injury, Orthop J Sports Med, 8, (2020); Bates N.A., Schilaty N.D., Nagelli C.V., Krych A.J., Hewett T.E., Multiplanar loading of the knee and its influence on anterior cruciate ligament and medial collateral ligament strain during simulated landings and noncontact tears, Am J Sports Med, 47, pp. 1844-1853, (2019); Buckthorpe M., Optimising the late-stage rehabilitation and return-to-sport training and testing process after ACL reconstruction, Sports Med, 49, pp. 1043-1058, (2019); Buckthorpe M., Della Villa F., Della Villa S., Roi G.S., On-field rehabilitation part 1: 4 pillars of high-quality on-field rehabilitation are restoring movement quality, physical conditioning, restoring sport-specific skills, and progressively developing chronic training load, J Orthop Sports Phys Ther, 49, pp. 565-569, (2019); Cannon J., Cambridge E.D.J., McGill S.M., Anterior cruciate ligament injury mechanisms and the kinetic chain linkage: the effect of proximal joint stiffness on distal knee control during bilateral landings, J Orthop Sports Phys Ther, 49, pp. 601-610, (2019); Della Villa F., Buckthorpe M., Grassi A., Nabiuzzi A., Tosarelli F., Zaffagnini S., Della Villa S., Systematic video analysis of ACL injuries in professional male football (soccer): injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, Br J Sports Med, 54, pp. 1423-1432, (2020); Dietvorst M., Brzoskowski M.H., van der Steen M., Delvaux E., Janssen R.P.A., Van Melick N., Limited evidence for return to sport testing after ACL reconstruction in children and adolescents under 16 years: a scoping review, J Exp Orthop, 7, (2020); Dix C., Arundale A., Silvers-Granelli H., Marmon A., Zarzycki R., Snyder-Mackler L., Biomechanical measures during two sport-specific tasks differentiate between soccer players who go on to anterior cruciate ligament injury and those who do not: a prospective cohort analysis, Intl J Sports Phys Ther, 15, pp. 928-935, (2020); Dos'Santos T., McBurnie A., Donelon T., Thomas C., Comfort P., Jones P.A., A qualitative screening tool to identify athletes with “high-risk” movement mechanics during cutting: the cutting movement assessment score (CMAS), Phys Ther Sport, 38, pp. 152-161, (2019); Hewett T.E., Bates N.A., Preventive biomechanics: a paradigm shift with a translational approach to injury prevention, Am J Sports Med, 45, pp. 2654-2664, (2017); Hewett T.E., Ford K.R., Xu Y.Y., Khoury J., Myer G.D., Effectiveness of neuromuscular training based on the neuromuscular risk profile, Am J Sports Med, 45, pp. 2142-2147, (2017); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., van den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Hewett T.E., Torg J.S., Boden B.P., Video analysis of trunk and knee motion during non-contact anterior cruciate ligament injury in female athletes: lateral trunk and knee abduction motion are combined components of the injury mechanism, Br J Sports Med, 43, pp. 417-422, (2009); Ishida T., Koshino Y., Yamanaka M., Ueno R., Taniguchi S., Samukawa M., Saito H., Matsumoto H., Aoki Y., Tohyama H., The effects of a subsequent jump on the knee abduction angle during the early landing phase, BMC Musculoskelet Disord, 19, (2018); King E., Richter C., Daniels K.A.J., Franklyn-Miller A., Falvey E., Myer G.D., Jackson M., Moran R., Strike S., Biomechanical but not strength or performance measures differentiate male athletes who experience acl reinjury on return to level 1 sports, Am J Sports Med, 49, (2021); King E., Richter C., Daniels K.A.J., Franklyn-Miller A., Falvey E., Myer G.D., Jackson M., Moran R., Strike S., Can biomechanical testing after anterior cruciate ligament reconstruction identify athletes at risk for subsequent ACL injury to the contralateral uninjured limb?, Am J Sports Med, 49, (2021); Koo T.K., Li M.Y., A guideline of selecting and reporting intraclass correlation coefficients for reliability research, J Chiropr Med, 15, pp. 155-163, (2016); Krosshaug T., Steffen K., Kristianslund E., Nilstad A., Mok K.-M., Myklebust G., Andersen T.E., Holme I., Engebretsen L., Bahr R., The vertical drop jump is a poor screening test for ACL injuries in female elite soccer and handball players: a prospective cohort study of 710 athletes, Am J Sports Med, 44, pp. 874-883, (2016); Leppanen M., Pasanen K., Krosshaug T., Kannus P., Vasankari T., Kujala U.M., Bahr R., Perttunen J., Parkkari J., Sagittal plane hip, knee, and ankle biomechanics and the risk of anterior cruciate ligament injury: a prospective study, Orthop J Sports Med, 5, (2017); Leppanen M., Pasanen K., Kujala U.M., Vasankari T., Kannus P., Ayramo S., Krosshaug T., Bahr R., Avela J., Perttunen J., Parkkari J., Stiff landings are associated with increased ACL injury risk in young female basketball and floorball players, Am J Sports Med, 45, pp. 386-393, (2017); McLean S.G., Walker K., Ford K.R., Myer G.D., Hewett T.E., van den Bogert A.J., Evaluation of a two dimensional analysis method as a screening and evaluation tool for anterior cruciate ligament injury, Br J Sports Med, 39, pp. 355-362, (2005); van Melick N., van Cingel R.E.H., Brooijmans F., Neeter C., van Tienen T., Hullegie W., Nijhuis-van der Sanden M.W.G., Evidence-based clinical practice update: practice guidelines for anterior cruciate ligament rehabilitation based on a systematic review and multidisciplinary consensus, Br J Sports Med, 50, pp. 1506-1515, (2016); van Melick N., van Rijn L., Nijhuis-van der Sanden M.W.G., Hoogeboom T.J., van Cingel R.E.H., Fatigue affects quality of movement more in ACL-reconstructed soccer players than in healthy soccer players, Knee Surg Sports Traumatol Arthrosc, 27, pp. 549-555, (2019); Myer G.D., Ford K.R., Di Stasi S.L., Foss K.D.B., Micheli L.J., Hewett T.E., High knee abduction moments are common risk factors for patellofemoral pain (PFP) and anterior cruciate ligament (ACL) injury in girls: is PFP itself a predictor for subsequent ACL injury?, Br J Sports Med, 49, pp. 118-122, (2015); Nagelli C.V., Wordeman S.C., Di Stasi S., Hoffman J., Marulli T., Hewett T.E., Neuromuscular training improves biomechanical deficits at the knee in anterior cruciate ligament-reconstructed athletes, Clin J Sport Med, 31, pp. 113-119, (2021); O'Kane J.W., Neradilek M., Polissar N., Sabado L., Tencer A., Schiff M.A., Risk factors for lower extremity overuse injuries in female youth soccer players, Orthop J Sports Med, 5, (2017); Ortiz A., Rosario-Canales M., Rodriguez A., Seda A., Figueroa C., Venegas-Rios H.L., Reliability and concurrent validity between two-dimensional and three-dimensional evaluations of knee valgus during drop jumps, Open Access J Sports Med, 7, pp. 65-73, (2016); Padua D.A., DiStefano L.J., Beutler A.I., de la Motte S.J., DiStefano M.J., Marshall S.W., The landing error scoring system as a screening tool for an anterior cruciate ligament injury-prevention program in elite-youth soccer athletes, J Athl Train, 50, pp. 589-595, (2015); Paterno M.V., Kiefer A.W., Bonnette S., Riley M.A., Schmitt L.C., Ford K.R., Myer G.D., Shockley K., Hewett T.E., Prospectively identified deficits in sagittal plane hip-ankle coordination in female athletes who sustain a second anterior cruciate ligament injury after anterior cruciate ligament reconstruction and return to sport, Clin Biomech (Bristol, Avon), 30, pp. 1094-1101, (2015); Raisanen A.M., Pasanen K., Krosshaug T., Vasankari T., Kannus P., Heinonen A., Kujala U.M., Avela J., Perttunen J., Parkkari J., Association between frontal plane knee control and lower extremity injuries: a prospective study on young team sport athletes, BMJ Open Sport Exerc Med, 4, (2018); Rothrauff B.B., Karlsson J., Musahl V., Irrgang J.J., Fu F.H., ACL consensus on treatment, outcome, and return to sport, Knee Surg Sports Traumatol Arthrosc, 28, pp. 2387-2389, (2020); Sigurdsson H.B., Karlsson J., Snyder-Mackler L., Briem K., Kinematics observed during ACL injury are associated with large early peak knee abduction moments during a change of direction task in healthy adolescents, J Orthop Res, (2020); Sigward S.M., Powers C.M., Loading characteristics of females exhibiting excessive valgus moments during cutting, Clin Biomech (Bristol, Avon), 22, pp. 827-833, (2007); Silvers-Granelli H.J., Bizzini M., Arundale A., Mandelbaum B.R., Snyder-Mackler L., Does the FIFA 11+ injury prevention program reduce the incidence of ACL injury in male soccer players?, Clin Orthop Relat Res, 475, pp. 2447-2455, (2017); Webster K.E., Feller J.A., Exploring the high reinjury rate in younger patients undergoing anterior cruciate ligament reconstruction, Am J Sports Med, 44, pp. 2827-2832, (2016); Weir G., Alderson J., Smailes N., Elliott B., Donnelly C., A reliable video-based ACL injury screening tool for female team sport athletes, Int J Sports Med, 40, pp. 191-199, (2019); Wiggins A.J., Grandhi R.K., Schneider D.K., Stanfield D., Webster K.E., Myer G.D., Risk of secondary injury in younger athletes after anterior cruciate ligament reconstruction: a systematic review and meta-analysis, Am J Sports Med, 44, pp. 1861-1876, (2016); Wilczynski B., Zorena K., Slezak D., Dynamic knee valgus in single-leg movement tasks. Potentially modifiable factors and exercise training options. A literature review, Int J Environ Res Public Health, (2020)","S. Di Paolo; Department for Life Quality Studies QUVI, Università Di Bologna, Bologna, Via Giulio Cesare Pupilli, 1, BO, 40136, Italy; email: stefano.dipaolo@ior.it","","Springer Science and Business Media Deutschland GmbH","09422056","","","33912979","English","Knee Surg. Sports Traumatol. Arthroscopy","Article","Final","All Open Access; Green Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85105386998" "Squadrone R.; Rodano R.; Preatoni E.","Squadrone, R. (6507328908); Rodano, R. (6603023939); Preatoni, E. (35801267400)","6507328908; 6603023939; 35801267400","Comparison of velocity and power output data derived from an inertial based system and an optical encoder during squat lifts in a weight room setting","2012","Journal of Sports Medicine and Physical Fitness","52","1","","40","46","6","13","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84860143219&partnerID=40&md5=adb41b15242cb02dca4a865cb5ae2567","Ab-Acus, Milan, Italy; Department of Bioengineering, Politecnico di Milano, 20133 Milan, Piazza L. Da Vinci 32, Italy; INDACO Department Politecnico di Milano, Milan, Italy; Sport, Health and Exercise Science, Department for Health, University of Bath, Bath, United Kingdom","Squadrone R., Ab-Acus, Milan, Italy; Rodano R., Department of Bioengineering, Politecnico di Milano, 20133 Milan, Piazza L. Da Vinci 32, Italy; Preatoni E., Department of Bioengineering, Politecnico di Milano, 20133 Milan, Piazza L. Da Vinci 32, Italy, INDACO Department Politecnico di Milano, Milan, Italy, Sport, Health and Exercise Science, Department for Health, University of Bath, Bath, United Kingdom","Aim: The purpose of this study was to assess a new wireless, light and portable inertial measurement system (FreePower; Sensorize, Rome, Italy), by comparing the measures of velocity and power it provides to the same measures derived from a high resolution optical encoder (Ergotest Technology a.s., Langesund, Norway). Methods: Fifteen male tennis and soccer players performed back squat lifts at the Smith Machine at loads ranging from 30% to 90% of their established 1RM load. The two devices measured the kinematics of the barbell simultaneously. The mean and peak velocity of the barbell and the mean and peak power applied to the barbell-body system were extracted and used for the comparison. Results: Measures of velocity and power, both in mean and peak values evidenced significant correlations (P<0.05) between the two systems. Linear regression r-squared values ranged from 0.978 for mean velocity to 0.993 for peak power, showing high-shared variance between the FreePower and the encoder values. Peak velocity, peak power and mean power values showed an absolute percentage difference of 2.8%, 3%, and 3.8%, respectively. The greatest discrepancy between the two systems was found in mean velocity values, where significantly lower values (P<0.05) were measured with the inertial system (-5.3%). Conclusion: The FreePower ® inertial system can provide practitioners with measures of velocity and power that are consistent, within reasonable error limits, with a high resolution optical encoder, when it is used in a standard weight room setting and a significant number of lifts are included in the analysis.","Athletic performance; Muscle strength; Soccer; Tennis","Adult; Athletes; Biomechanics; Humans; Linear Models; Male; Muscle Strength; Sports Medicine; Weight Lifting; Young Adult; adult; article; athlete; biomechanics; comparative study; human; instrumentation; male; muscle strength; physiology; sports medicine; statistical model; weight lifting","Schmidtbleicher D., Training for power events, Strength and Power in Sport, pp. 381-395, (1992); Baker D., Acute and Long-Term Power Responses to Power Training: Observations on the Training of an Elite Power Athlete, Strength and Conditioning Journal, 23, 1, pp. 47-56, (2001); Drinkwater E.J., Galna B., McKenna M.J., Hunt P.H., Pyne D.B., Validation of an optical encoder during free weight resistance movements and analysis of bench press sticking point power during fatigue, J Strength Cond Res, 21, pp. 510-517, (2007); Lawton T., Cronin J., Drinkwater E., Lindsell R., Pyne D., The effect of continuous repetition training and intra-set rest training on bench press strength and power, Journal of Sports Medicine and Physical Fitness, 44, 4, pp. 361-367, (2004); Jennings C.L., Viljoen W., Durandt J., Lambert M.I., The reliability of the FitroDyne as a measure of muscle power, Journal of Strength and Conditioning Research, 19, 4, pp. 859-863, (2005); Cronin J.B., Hing R.D., McNair P.J., Reliability and validity of a linear position transducer for measuring jump performance, Journal of Strength and Conditioning Research, 18, 3, pp. 590-593, (2004); Cronin J., McNair P.J., Marshall R.N., Lunge performance and its determinants, Journal of Sports Sciences, 21, 1, pp. 49-57, (2003); Bruenger A.J., Smith S.L., Sands W.A., Leigh M.R., Validation of instrumentation to monitor dynamic performance of Olympic weightlifters, J Strength Cond Res, 21, pp. 492-499, (2007); Thompson C.J., Bemben M.G., Reliability and comparability of the accelerometer as a measure of muscular power, Medicine and Science in Sports and Exercise, 31, 6, pp. 897-902, (1999); Sato K., Smith S.L., Sands W.A., Validation of an accelerometer for measuring sport performance, J Strength Cond Res, 23, pp. 341-347, (2009); Cotterman M.L., Darby L.A., Skelly W.A., Comparison of muscle force production using the Smith machine and free weights for bench press and squat exercises, Journal of Strength and Conditioning Research, 19, 1, pp. 169-176, (2005); Rehbinder H., Hu X., Drift-free attitude estimation for accelerated rigid bodies, Automatica, 40, pp. 653-659, (2004); Woodman O.J., An Introduction to Inertial Navigation, (2007); Bosco C., Belli A., Astrua M., Tihanyi J., Pozzo R., Kellis S., Et al., A dynamometer for evaluation of dynamic muscle work, Eur J Appl Physiol Occup Physiol, 70, pp. 379-386, (1995); McBride J.M., Triplett-McBride T., Davie A., Newton R.U., The effect of heavy-vs. light-load jump squats on the development of strength, power, and speed, J Strength Cond Res, 16, pp. 75-82, (2002); Siegel J.A., Gilders R.M., Staron R.S., Hagerman F.C., Human muscle power output during upper-and lower-body exercises, J Strength Cond Res, 16, pp. 173-178, (2002); Izquierdo M., Hakkinen K., Gonzalez-Badillo J.J., Ibanez J., Gorostiaga E.M., Effects of long-term training specificity on maximal strength and power of the upper and lower extremities in athletes from different sports, European Journal of Applied Physiology, 87, 3, pp. 264-271, (2002); Dugan E.L., Doyle T.L.A., Humphries B., Hasson C.J., Newton R.U., Determining the optimal load for jump squats: A review of methods and calculations, Journal of Strength and Conditioning Research, 18, 3, pp. 668-674, (2004); Hori N., Newton R.U., Andrews W.A., Kawamori N., McGuigan M.R., Nosaka K., Comparison of four different methods to measure power output during the hang power clean and weighted jump squat, J Strength Cond Res, 21, pp. 314-320, (2007); Wood G.A., Data smoothing and differentiation procedures in biomechanics, Exerc Sports Sci Rev, 10, pp. 308-362, (1982); Winter D.A., Biomechanics and Motor Control of Human Movement, (1990); Hori N., Newton R.U., Nosaka K., McGuigan M.R., Comparison of different methods of determining power output in weightlifting exercises, Strength and Conditioning Journal, 28, 2, pp. 34-40, (2006); Casartelli N., Muller R., Maffiuletti N.A., Validity and reliability of the Myotest accelerometric system for the assessment of vertical jump height, J Strength Cond Res, 24, pp. 3186-3193, (2010); Feldmann C.R., Weiss L.W., Ferreira L.C., Schilling B.K., Hammond K.G., Criterion validity of accelerometer-derived peak power obtained during jump squats, Med Sci Sports Exerc, 42, (2010)","R. Rodano; Department of Bioengineering, Politecnico di Milano, 20133 Milan, Piazza L. Da Vinci 32, Italy; email: renato.rodano@polimi.it","","","00224707","","JMPFA","22327085","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-84860143219" "Janse van Rensburg L.; Dare M.; Louw Q.; Crous L.; Cockroft J.; Williams L.; Olivier B.","Janse van Rensburg, L. (57194572698); Dare, M. (57194566703); Louw, Q. (13205459700); Crous, L. (6508090287); Cockroft, J. (39961275200); Williams, L. (57194564461); Olivier, B. (55928389000)","57194572698; 57194566703; 13205459700; 6508090287; 39961275200; 57194564461; 55928389000","Pelvic and hip kinematics during single-leg drop-landing are altered in sports participants with long-standing groin pain: A cross-sectional study","2017","Physical Therapy in Sport","26","","","20","26","6","15","10.1016/j.ptsp.2017.05.003","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020922311&doi=10.1016%2fj.ptsp.2017.05.003&partnerID=40&md5=5bc4e96b3843c7979b8363c13370344f","Faculty of Medicine and Health Sciences – Stellenbosch University, Physiotherapy Division, PO Box 241, Cape Town, 8000, South Africa; Faculty of Health Sciences, University of the Witwatersrand, Physiotherapy Department, 7 York Road, Parktown, 2193, Johannesburg, Gauteng, South Africa","Janse van Rensburg L., Faculty of Medicine and Health Sciences – Stellenbosch University, Physiotherapy Division, PO Box 241, Cape Town, 8000, South Africa; Dare M., Faculty of Medicine and Health Sciences – Stellenbosch University, Physiotherapy Division, PO Box 241, Cape Town, 8000, South Africa; Louw Q., Faculty of Medicine and Health Sciences – Stellenbosch University, Physiotherapy Division, PO Box 241, Cape Town, 8000, South Africa; Crous L., Faculty of Medicine and Health Sciences – Stellenbosch University, Physiotherapy Division, PO Box 241, Cape Town, 8000, South Africa; Cockroft J., Faculty of Medicine and Health Sciences – Stellenbosch University, Physiotherapy Division, PO Box 241, Cape Town, 8000, South Africa; Williams L., Faculty of Medicine and Health Sciences – Stellenbosch University, Physiotherapy Division, PO Box 241, Cape Town, 8000, South Africa; Olivier B., Faculty of Health Sciences, University of the Witwatersrand, Physiotherapy Department, 7 York Road, Parktown, 2193, Johannesburg, Gauteng, South Africa","Objectives The aim of this study was to determine the differences in three-dimensional pelvic and hip kinematics during a single-leg drop-landing task in active sports participants with long-standing groin pain compared to healthy matched controls. Design This was a descriptive study incorporating a cross-sectional design. Setting The study was conducted at the Unit for Human Movement Analysis, Stellenbosch University, South Africa. Participants The study sample was comprised of 20 male club level soccer, rugby, running and cycling participants between the ages of 18 and 55 years. Ten cases with long-standing groin pain and ten asymptomatic matched controls participated. Main outcome measures Three-dimensional pelvic and hip kinematics were captured with an optical motion capture system during a single-leg drop-landing task. Results Participants with groin pain landed with more downward lateral pelvic tilt (0.77°, p = 0.01, r = 0.35), hip abduction (2.05°, p < 0.001. r = 0.49), and hip external rotation (0.86°, p = 0.03, r = 0.29) at initial contact and more pelvic internal rotation (1.06°, p = 0.02, r = 0.30) at lowest vertical position than the healthy controls. Conclusions Sports participants with long-standing groin pain have altered pelvic and hip kinematics during single-leg drop-landing compared to healthy controls. The kinematic differences may contribute towards the persistent nature of groin pain, although these strategies may also be present as a result of the presence or the expectation of pain. © 2017 Elsevier Ltd","Groin pain; Hip; Kinematics; Pelvis","Abdominal Pain; Adult; Athletes; Biomechanical Phenomena; Case-Control Studies; Cross-Sectional Studies; Groin; Hip Joint; Humans; Male; Middle Aged; Movement; Rotation; Young Adult; adult; Article; clinical article; controlled study; cross-sectional study; cycling; descriptive research; hip abduction; hip external rotation; hip kinematics; human; inguinal pain; kinematics; lateral pelvic tilt; light related phenomena; long standing groin pain; male; motion; optical motion capture system; pelvic internal rotation; pelvic kinematics; priority journal; rugby; running; single leg drop landing task; soccer; South Africa; sport; tilting; abdominal pain; athlete; biomechanics; case control study; hip; inguinal region; middle aged; movement (physiology); pathophysiology; rotation; young adult","Arnason A., Sigurdsson S.B., Gudmundsson A., Holme I., Engebretsen L., Bahr R., Risk factors for injuries in football, The American Journal of Sports Medicine, 32, pp. 5S-16S, (2004); Cowan S.M., Schache A.G., Brukner P., Bennell K.L., Hodges P.W., Coburn P., Et al., Delayed onset of transversus abdominus in long-standing groin pain, Medicine and Science in Sports and Exercise, 36, pp. 2040-2045, (2004); Davies A.G., Clarke A.W., Gilmore J., Wotherspoon M., Connell D.A., Review: Imaging of groin pain in the athlete, Skeletal Radiology, 39, pp. 629-644, (2010); Davis R.B., Ounpuu S., Tyburski D., Gage J.R., A gait analysis data collection and analysis technique, Human Movement Science, 10, pp. 575-587, (1991); Delahunt E., Fitzpatrick H., Blake C., Pre-season adductor squeeze test and HAGOS function sport and recreation subscale scores predict groin injury in Gaelic football players, Physical Therapy in Sport, 23, pp. 1-6, (2017); Delahunt E., McEntee B.L., Kennelly C., Green B.S., Coughlan G.F., Intrarater reliability of the adductor squeeze test in gaelic games athletes, Journal of Athletic Training, 46, pp. 241-245, (2011); Ekstrand J., Gillquist J., The avoidability of soccer injuries, International Journal of Sports Medicine, 4, pp. 124-128, (1983); Gabbe B.J., Bailey M., Cook J.L., Makdissi M., Scase E., Ames N., Et al., The association between hip and groin injuries in the elite junior football years and injuries sustained during elite senior competition, British Journal of Sports Medicine, 44, pp. 799-802, (2010); Grissom R.J., Kim J.J., Effect sizes for research: Univariate and multivariate applications, (2012); Hawkins R.D., Hulse M.A., Wilkinson C., Hodson A., Gibson M., The association football medical research programme: An audit of injuries in professional football, British Journal of Sports Medicine, 35, pp. 43-47, (2001); Hodges P.W., Moseley G.L., Gabrielsson A., Gandevia S.C., Experimental muscle pain changes feedforward postural responses of the trunk muscles, Experimental Brain Research, 151, pp. 262-271, (2003); Hodges P.W., Richardson C.A., Contraction of the abdominal muscles associated with movement of the lower limb, Physical Therapy, 77, pp. 132-142, (1997); Larsson C., Ekvall Hansson E., Sundquist K., Jakobsson U., Impact of pain characteristics and fear-avoidance beliefs on physical activity levels among older adults with chronic pain: A population-based, longitudinal study, BioMed Central Geriatrics, 16, (2016); McCarthy Persson U., O'Sullivan R.M., Morrissey D., Wallace J., The ability of athletes with long-standing groin pain to maintain a stable lumbopelvic position: A laboratory study, Physical Therapy in Sport, 23, pp. 45-49, (2017); Merrifield H.H., Cowan R.F., Groin strain injuries in ice hockey, Journal of Sports Medicine, 1, pp. 41-42, (1973); Morrissey D., Graham J., Screen H., Sinha A., Small C., Twycross-Lewis R., Et al., Coronal plane hip muscle activation in football code athletes with chronic adductor groin strain injury during standing hip flexion, Manual Therapy, 17, pp. 145-149, (2012); Mosler A.B., Agricola R., Weir A., Holmich P., Crossley K.M., Which factors differentiate athletes with hip/groin pain from those without? A systematic review with meta-analysis, British Journal of Sports Medicine, 49, (2015); Neumann D.A., Kinesiology of the hip: A focus on muscular actions, Journal of Orthopaedic and Sports Physical Therapy, 40, pp. 82-94, (2010); Nguyen A.D., Shultz S.J., Sex differences in clinical measures of lower extremity alignment, Journal of Orthopaedic and Sports Physical Therapy, 37, pp. 389-398, (2007); Nguyen A.D., Shultz S.J., Schmitz R.J., Luecht R.M., Perrin D.H., A preliminary multifactorial approach describing the relationships among lower extremity alignment, hip muscle activation, and lower extremity joint excursion, Journal of Athletic Training, 46, pp. 246-256, (2011); Niven D.J., Berthiaume L.R., Fick G.H., Laupland K.B., Matched case-control studies: A review of reported statistical methodology, Clinical Epidemiology, 4, pp. 99-110, (2012); O'Sullivan P., Diagnosis and classification of chronic low back pain disorders: Maladaptive movement and motor control impairments as underlying mechanism, Manual Therapy, 10, pp. 242-255, (2005); O'Sullivan P., Beales D.J., Beetham J.A., Cripps J., Graf F., Lin I.B., Et al., Altered motor control strategies in subjects with sacroiliac joint pain during the active straight-leg-raise test, Spine (Phila Pa 1976), 27, pp. E1-E8, (2002); Rosenthal R., Meta-analytic procedures for social research, (1991); Ryan J., DeBurca N., Mc Creesh K., Risk factors for groin/hip injuries in field-based sports: A systematic review, British Journal of Sports Medicine, 48, pp. 1089-1096, (2014); Tyler T.F., Nicholas S.J., Campbell R.J., McHugh M.P., The association of hip strength and flexibility with the incidence of adductor muscle strains in professional ice hockey players, The American Journal of Sports Medicine, 29, pp. 124-128, (2001); Weir A., Brukner P., Delahunt E., Ekstrand J., Griffin D., Khan K.M., Et al., Doha agreement meeting on terminology and definitions in groin pain in athletes, British Journal of Sports Medicine, 49, pp. 768-774, (2015); Weltin E., Gollhofer A., Mornieux G., Effect of gender on trunk and pelvis control during lateral movements with perturbed landing, European Journal of Sport Science, 16, pp. 182-189, (2016); Whittaker J.L., Small C., Maffey L., Emery C.A., Risk factors for groin injury in sport: An updated systematic review, British Journal of Sports Medicine, 49, pp. 803-809, (2015)","B. Olivier; Faculty of Health Sciences, University of the Witwatersrand, Physiotherapy Department, Johannesburg, 7 York Road, Parktown, 2193, South Africa; email: benita.olivier@wits.ac.za","","Churchill Livingstone","1466853X","","PTSHB","28641201","English","Phys. Ther. Sport","Article","Final","","Scopus","2-s2.0-85020922311" "Ortiz A.; Trudelle-Jackson E.; McConnell K.; Wylie S.","Ortiz, Alexis (8297848700); Trudelle-Jackson, Elaine (6602470398); McConnell, Keegan (36128782200); Wylie, Stephanie (58344256800)","8297848700; 6602470398; 36128782200; 58344256800","Effectiveness of a 6-week injury prevention program on kinematics and kinetic variables in adolescent female soccer players: A pilot study","2010","Puerto Rico Health Sciences Journal","29","1","","40","48","8","16","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-77349107664&partnerID=40&md5=1e36d3167bac2c190e97306b9221f5d9","University of Puerto Rico-Medical Sciences Campus, School of Health Professions, Physical Therapy Program, San Juan, PR, Puerto Rico; Graduate Program in Exercise Sciences, University of Puerto Rico-Rio Piedras Campus, San Juan, PR, Puerto Rico; Texas Woman's University, School of Physical Therapy, Dallas, TX, United States; Sports Injury Prevention Programs, Dallas, TX, United States","Ortiz A., University of Puerto Rico-Medical Sciences Campus, School of Health Professions, Physical Therapy Program, San Juan, PR, Puerto Rico, Graduate Program in Exercise Sciences, University of Puerto Rico-Rio Piedras Campus, San Juan, PR, Puerto Rico; Trudelle-Jackson E., Texas Woman's University, School of Physical Therapy, Dallas, TX, United States; McConnell K., Sports Injury Prevention Programs, Dallas, TX, United States; Wylie S., Sports Injury Prevention Programs, Dallas, TX, United States","Background: Incidence of knee injuries in female soccer players is 2-6 times that of male counterparts. The objective was to determine whether an injury prevention program incorporated into the athlete's regular soccer practice is effective for improving landing mechanics. Methods: Two competitive adolescent female soccer teams (n = 30) participated in the study. One team served as the control group while the other team participated in a 6-week injury prevention program. Muscle strength, muscle length, and 3-dimensional kinematics and kinetics during a single legged drop jump and single legged squat task were measured pre and post-intervention. A 2 x 2 repeated measures multivariate analyses of variance (MANOVA's) were used to compare strength and flexibility measures as well as knee joint kinematics and kinetics. Significant multivariate results were followed with appropriate univariate analyses. Results: Quadriceps strength increased significantly (p=.004) following the injury prevention program while other strength and flexibility measurements were unchanged. Differences in knee joint angles and moments during the drop jump and squat tasks showed varied results with a tendency for improvement in the intervention group. Conclusions: Flexibility and strength do not appear to be affected by a short injury prevention program. Knee joint injury predisposing factors improved minimally but did not reach statistical significance with a short injury prevention program integrated as warm-up into soccer practice. Further research with a larger sample size is needed to explore the effectiveness of such programs.","ACL; Drop jump; Knee; Landing; Soccer","Adolescent; Athletic Injuries; Biomechanics; Female; Humans; Kinetics; Pilot Projects; Program Evaluation; Soccer; Time Factors; adolescent; article; biomechanics; female; health care quality; human; injury; kinetics; pilot study; sport; sport injury; time","Junge A., Dvorak J., Soccer injuries: A review on incidence and prevention, Sports Med, 34, pp. 929-938, (2004); Fauno P., Wulff J.B., Mechanism of anterior cruciate ligament injuries in soccer, Int J Sports Med Jan, 27, pp. 75-79, (2006); North Palm Beach, (1995); Mandelbaum B.R., Putukian M., Medical concerns and specificities in female soccer players, Science & Sports, 14, pp. 254-260, (1999); Injuries In Youth Soccer: A Subjects Review, (2000); National Electronic Injury Surveillance System Data, (1995); Lindenfeld T.N., Schmitt D.J., Hendy M.P., Et al., Incidence of injury in indoor soccer, Am J Sports Med, 22, pp. 364-371, (1994); Moeller J., Lamb M., Anterior cruciate ligament injuries in female athletes: Why are women more susceptible?, Phys Sportsmed, 25, pp. 31-54, (1997); Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. NCAA data and review of literature, Am J Sports Med, 23, pp. 694-701, (1995); Malone T., Hardaker W., Garrett W.E., Relationship of gender to anterior cruciate ligament injuries in intercollegiate basketball players, Southern Orthop Assoc, 2, pp. 36-39, (1993); Ferretti A., Papandrea P., Conteduca F., Et al., Knee ligament injuries in volleyball players, Am J Sports Med, 20, pp. 203-207, (1992); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Et al., The effect of neuromuscular training on the incidence of knee injury in female athletes. A prospective study, Am J Sports Med, 27, pp. 699-706, (1999); Fithian D.C., Paxton L.W., Goltz D.H., Fate of the anterior cruciate ligament-injured knee, Orthop Clin North Am, 33, pp. 621-636, (2002); Chandy T., Grana W., Secondary school athletic injury in boys and girls: A three-year comparison, Phys Sportsmed, 13, pp. 106-111, (1985); Daniel D.M., Stone M.L., Dobson B.E., Et al., Fate of the ACL-injured patient. A prospective outcome study, Am J Sports Med, 22, pp. 632-644, (1994); Noyes F.R., Matthews D.S., Mooar P.A., Et al., The symptomatic anterior cruciate-deficient knee. Part II: The results of rehabilitation, activity modification, and counseling on functional disability, J Bone Joint Surg Am, 65, pp. 163-174, (1983); Griffin L.Y., Agel J., Albohm M.J., Et al., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, J Am Acad Orthop Surg, 8, pp. 141-150, (2000); Chappell J.D., Yu B., Kirkendall D.T., Et al., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am J Sports Med, 30, pp. 261-267, (2002); Markolf K.L., Burchfield D.M., Shapiro M.M., Et al., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, pp. 930-935, (1995); Malinzak R.A., Colby S.M., Kirkendall D.T., Et al., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech, 16, pp. 438-445, (2001); Hewett T.E., Stroupe A.L., Nance T.A., Et al., Plyometric training in female athletes. Decreased impact forces and increased hamstring torques, Am J Sports Med, 24, pp. 765-773, (1996); Prapavessis H., McNair P.J., Anderson K., Et al., Decreasing landing forces in children: The effect of instructions, J Orthop Sports Phys Ther, 33, pp. 204-207, (2003); Olsen O.E., Myklebust G., Engebretsen L., Et al., Exercises to prevent lower limb injuries in youth sports: Cluster randomised controlled trial, Bmj, 330, (2005); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Et al., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes: 2-year follow-up, Am J Sports Med, 33, pp. 1003-1010, (2005); Trudelle-Jackson E., Smith S., Effects of post-rehabilitative exercises following total hip arthroplasty: A randomized controlled trial, Arch Phys Med Rehabil, 85, pp. 1056-1062, (2004); Trudelle-Jackson E., Emerson R., Smith S., Outcomes of total hip arthroplasty: A study of patients one year postsurgery, J Orthop Sports Phys Ther, 32, pp. 260-267, (2002); Anthropometric Source Book, 1, (1978); Borman N., Smith S., Effect of Position of Stretch On Hamstring Muscle Length, Lumbar Active Range of Motion, and Lumbar Curvature In Adults, (2003); Wojtys E.M., Wylie B.B., Huston L.J., The effects of muscle fatigue on neuromuscular function and anterior tibial translation in healthy knees, Am J Sports Med, 24, pp. 615-621, (1996); Colby S., Francisco A., Yu B., Et al., Electromyographic and kinematic analysis of cutting maneuvers: Implications for anterior cruciate ligament injury, Am J Sports Med, 28, pp. 234-240, (2000); Demorat G., Weinhold P., Blackburn T., Et al., Aggressive quadriceps loading can induce noncontact anterior cruciate ligament injury, Am J Sports Med, 32, pp. 477-483, (2004); Malinzak R.A., Colby S.M., Kirkendall D.T., Et al., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech, 16, pp. 438-445, (2001); White K.K., Lee S.S., Cutuk A., Et al., EMG power spectra of intercollegiate athletes and anterior cruciate ligament injury risk in females, Med Sci Sports Exerc, 35, pp. 371-376, (2003); Bandy W.D., Irion J.M., The effect of time on static stretch on the flexibility of the hamstring muscles, Phys Ther, 74, pp. 8445-8850, (1994); Bandy W.D., Irion J.M., Briggler M., The effect of static stretch and dynamic range of motion training on the flexibility of the hamstring muscles, J Orthop Sports Phys Ther, 27, pp. 295-300, (1998); Browder D., Enseki K., Fritz J., Intertester reliability of hip range of motion measurements and special tests, J Orthop Sports Phys Ther, 34, (2004); Norkin C.K., White D.J., Measurement of Joint Motion. a Guide to Goniometry, (2003); Ortiz A., Olson S.L., Libby C.L., Et al., Landing mechanics between non-injured women and women with anterior cruciate ligament reconstruction during 2 jump tasks, Am J Sports Med, 36, pp. 149-157, (2008); Ortiz A., Olson S.L., Libby C.L., Core stability for the female athlete: A review, J Women's Health Phys Ther, 30, pp. 11-17, (2006); Walsh M., Arampatzis A., Schade F., Et al., The effect of drop jump starting height and contact time on power, work performed, and moment of force, J Strength Cond Res, 18, pp. 561-566, (2004); Huston L.J., Vibert B., Ashton-Miller J.A., Et al., Gender differences in knee angle when landing from a drop-jump, Am J Knee Surg, 14, pp. 215-220, (2001); Ortiz A., Olson S.L., Libby C.L., Et al., Kinematic and kinetic reliability of two jumping and landing physical performance tasks in young adult women, Najspt, 2, pp. 104-112, (2007)","A. Ortiz; Physical Therapy Program, School of Health Professions, San Juan, PR 00936, PO Box 365067, Puerto Rico; email: alexis.ortiz@upr.edu","","","07380658","","","20222333","English","Puerto Rico Health Sci. J.","Article","Final","","Scopus","2-s2.0-77349107664" "Nguyen A.-D.; Zuk E.F.; Baellow A.L.; Pfile K.R.; DiStefano L.J.; Boling M.C.","Nguyen, Anh-Dung (12805987900); Zuk, Emma F. (57196195645); Baellow, Andrea L. (56685758300); Pfile, Kate R. (54403652700); DiStefano, Lindsay J. (24480755900); Boling, Michelle C. (14055392700)","12805987900; 57196195645; 56685758300; 54403652700; 24480755900; 14055392700","Longitudinal changes in hip strength and range of motion in female youth soccer players: Implications for ACL injury, A pilot study","2017","Journal of Sport Rehabilitation","26","5","","358","364","6","14","10.1123/jsr.2015-0197","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85032175755&doi=10.1123%2fjsr.2015-0197&partnerID=40&md5=36ab6b34ccd11e3957e6346f496caf86","Congdon School of Health Sciences, Dept of Athletic Training, High Point University, High Point, NC, United States; Dept of Health and Human Performance, Athletic Training Program, College of Charleston, Charleston, SC, United States; Dept of Kinesiology, Athletic Training Program, University of Connecticut, Storrs, CT, United States; Dept of Clinical and Applied Movement Sciences, Athletic Training Program, University of North Florida, Jacksonville, FL, United States","Nguyen A.-D., Congdon School of Health Sciences, Dept of Athletic Training, High Point University, High Point, NC, United States; Zuk E.F., Congdon School of Health Sciences, Dept of Athletic Training, High Point University, High Point, NC, United States; Baellow A.L., Congdon School of Health Sciences, Dept of Athletic Training, High Point University, High Point, NC, United States; Pfile K.R., Dept of Health and Human Performance, Athletic Training Program, College of Charleston, Charleston, SC, United States; DiStefano L.J., Dept of Kinesiology, Athletic Training Program, University of Connecticut, Storrs, CT, United States; Boling M.C., Dept of Clinical and Applied Movement Sciences, Athletic Training Program, University of North Florida, Jacksonville, FL, United States","Context: Risk of anterior cruciate ligament (ACL) injuries in young female athletes increases with age, appearing to peak during maturation. Changes in hip muscle strength and range of motion (ROM) during this time may contribute to altered dynamic movement patterns that are known to increase risk of ACL injuries. Understanding the longitudinal changes in hip strength and ROM is needed to develop appropriate interventions to reduce the risk of ACL injuries. Objective: To examine the longitudinal changes in hip strength and ROM in female youth soccer players. Design: Longitudinal descriptive study. Setting: Field setting. Participants: 14 female youth soccer athletes (14.1 ± 1.1 y, 165.8 ± 5.3 cm, 57.5 ± 9.9 kg) volunteered as part of a multiyear risk factor screening project. Main Outcome Measures: Clinical measures of hip strength and ROM were collected annually over 3 consecutive years. Passive hip internal rotation (IR), external rotation (ER), abduction (ABD), and adduction (ADD) ROM were measured with a digital inclinometer. Isometric hip ABD and extension (EXT) strength were evaluated using a hand-held dynamometer. Separate repeated-measures ANOVAs compared hip strength and ROM values across 3 consecutive years (P < .05). Results: As youth female soccer players increased in age, there were no changes in normalized hip ABD (P = .830) or EXT strength (P = .062) across 3 consecutive years. Longitudinal changes in hip ROM were observed with increases in hip IR (P = .001) and ABD (P < .001), while hip ADD (P = .009) and ER (P < .001) decreased. Conclusions: Anatomical changes at the hip occur as youth female soccer players increase in age. While there are no changes in hip strength, there is an increase in hip IR and ABD ROM with a concomitant decrease in hip ER and ADD ROM. The resulting asymmetries in hip ROM may decrease the activation and force producing capabilities of the hip muscles during dynamic activities, contributing to altered lower extremity mechanics known to increase the risk of ACL injuries. © 2017 Human Kinetics, Inc.","Adolescent athletes; Knee ligament injury; Risk factors","Adolescent; Anterior Cruciate Ligament Injuries; Athletes; Biomechanical Phenomena; Female; Hip; Humans; Muscle Strength; Muscle, Skeletal; Pilot Projects; Range of Motion, Articular; Rotation; Soccer; adolescent; anterior cruciate ligament injury; athlete; biomechanics; female; hip; human; joint characteristics and functions; muscle strength; physiology; pilot study; rotation; skeletal muscle; soccer","Joseph A.M., Collins C.L., Henke N.M., Yard E.E., Fields S.K., Comstock R.D., A multisport epidemiologic comparison of anterior cruciate ligament injuries in high school athletics, J Athl Train, 48, 6, pp. 810-817, (2013); Stracciolini A., Stein C.J., Zurakowski D., Meehan W.P.I., Myer G.D., Micheli L.J., Anterior cruciate ligament injuries in pediatric athletes presenting to sports medicine clinic: a comparison of males and females through growth and development, Sports Health, 7, 2, pp. 130-136, (2015); Shea K.G., Pfeiffer R., Wang J.H., Curtin M., Apel P.J., Anterior cruciate ligament injury in pediatric and adolescent soccer players: an analysis of insurance data, J Pediatr Orthop, 24, 6, pp. 623-628, (2004); Quatman C.E., Ford K.R., Myer G.D., Hewett T.E., Maturation leads to gender differences in landing force and vertical jump performance: a longitudinal study, Am J Sports Med, 34, pp. 806-813, (2006); Quatman-Yates C.C., Myer G.D., Ford K.R., Hewett T.E., A longitudinal evaluation of maturational effects on lower extremity strength in female adolescent athletes, Pediatr Phys Ther, 25, 3, pp. 271-276, (2013); Ford K.R., Myer G.D., Hewett T.E., Longitudinal effects of maturation on lower extremity joint stiffness in adolescent athletes, Am J Sports Med, 38, 9, pp. 1829-1837, (2010); Ford K.R., Shapiro R., Myer G.D., Van Den Bogert A.J., Hewett T.E., Longitudinal sex differences during landing in knee abduction in young athletes, Med Sci Sports Exerc, 42, 10, pp. 1923-1931, (2010); 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Nyland J., Kuzemchek S., Parks M., Caborn D.N., Femoral anteversion influences vastus medialis and gluteus medius emg amplitude: composite hip abductor emg amplitude ratios during isometric combined hip abduction-external rotation, J Electromyogr Kinesiol, 14, 2, pp. 255-261, (2004); Merchant A.C., Hip abductor muscle force; an experimental study of the influence of hip position with particular reference to rotation, J Bone Joint Surg Am, 47, pp. 462-476, (1965); DiStefano L.J., Martinez J.C., Crowley E., Et al., Maturation and sex differences in neuromuscular characteristics of youth athletes, J Strength Cond Res, 29, 9, pp. 2465-2473, (2015); Beutler A., de la Motte S., Marshall S., Padua D.B.B., Muscle strength and qulatitative jump-landing differences in male and female military cadets: the Jump-ACL study, J Sports Sci Med, 8, pp. 663-671, (2009); Gottschalk F., Kourosh S., Leveau B., The functional anatomy of tensor fasciae latae and gluteus medius and minimus, J Anat, 166, pp. 179-189, (1989); 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A follow-up study in normal and abnormal conditions, J Bone Joint Surg Am, 55, 8, pp. 1726-1738, (1973); Staheli L.T., Medial femoral torsion, Orthop Clin North Am, 11, 1, pp. 39-50, (1980); Dostal W.F., Andrews J.G., A three-dimensional biomechanical model of hip musculature, J Biomech, 14, 11, pp. 803-812, (1981); Dostal W.F., Soderberg G.L., Andrews J.G., Actions of hip muscles, Phys Ther, 66, 3, pp. 351-361, (1986); Delp S.L., Hess W.E., Hungerford D., Jones L.C., Variation of rotation moment arms with hip flexion, J Biomech, 32, pp. 493-501, (1999); Howard J.S., Fazio M.A., Mattacola C.G., Uhl T.L., Jacobs C.A., Structure, sex, and strength and knee and hip kinematics during landing, J Athl Train, 464, 4, pp. 376-385, (2011)","A.-D. Nguyen; Congdon School of Health Sciences, Dept of Athletic Training, High Point University, High Point, United States; email: anguyen@highpoint.edu","","Human Kinetics Publishers Inc.","10566716","","JSRHE","27632866","English","J. Sport Rehabil.","Article","Final","","Scopus","2-s2.0-85032175755" "Sasaki S.; Koga H.; Krosshaug T.; Kaneko S.; Fukubayashi T.","Sasaki, S. (37015495700); Koga, H. (12763750800); Krosshaug, T. (55888189500); Kaneko, S. (37015402200); Fukubayashi, T. (7003671492)","37015495700; 12763750800; 55888189500; 37015402200; 7003671492","Kinematic analysis of pressing situations in female collegiate football games: New insight into anterior cruciate ligament injury causation","2018","Scandinavian Journal of Medicine and Science in Sports","28","3","","1263","1271","8","13","10.1111/sms.13018","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85038003484&doi=10.1111%2fsms.13018&partnerID=40&md5=03123b7348b56cfe0a17186a0dff8bb1","Faculty of Health Sciences, Tokyo Ariake University of Medical and Health Sciences, Koto-ku, Tokyo, Japan; Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan; Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Graduate School of Sport Sciences, Waseda University, Tokorozaswa-city, Saitama, Japan; Faculty of Sport Sciences, Waseda University, Tokorozaswa-city, Saitama, Japan","Sasaki S., Faculty of Health Sciences, Tokyo Ariake University of Medical and Health Sciences, Koto-ku, Tokyo, Japan; Koga H., Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan; Krosshaug T., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Kaneko S., Graduate School of Sport Sciences, Waseda University, Tokorozaswa-city, Saitama, Japan; Fukubayashi T., Faculty of Sport Sciences, Waseda University, Tokorozaswa-city, Saitama, Japan","The most common events during which anterior cruciate ligament (ACL) injuries occur in football are pressing situations. This study aimed to describe the knee and hip joint kinematics during pressing situations in football games to identify kinematic patterns in actions with a high risk for ACL injuries. We filmed 5 female collegiate football matches and identified 66 pressing situations. Five situations with a large distance between the trunk and foot placements in the sagittal plane were analyzed using a model-based image-matching technique. The mean knee flexion angle at initial contact (IC) was 13° (range, 8°-28°) and increased by 11° (95% confidence interval [CI], 3°-14°) at 40 ms after IC. As for knee adduction and rotation angles, the knee positions were close to neutral at IC, and only minor knee angular changes occurred later in the sequences. The mean hip flexion was 25° (range, 8°-43°) at IC and increased by 22° (95% CI, 11°-32°) after 100 ms. The hip was also externally rotated by 7° (range, −19° to 3°) at IC, and gradually rotated internally, reaching 10° of internal rotation (range, −5° to 27°) at 100 ms after IC. This study suggests that the observed knee valgus, internal hip and knee rotation, and static hip flexion previously reported in non-contact ACL injury events are unique to injury situations. In contrast, neither rapid knee valgus nor increased internal rotation was seen in non-injury pressing maneuvers. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd","deceleration; defender; high risk maneuver; hip; knee; match situation; motion analysis","Anterior Cruciate Ligament Injuries; Athletic Injuries; Biomechanical Phenomena; Female; Hip Joint; Humans; Knee Joint; Range of Motion, Articular; Rotation; Soccer; Video Recording; anterior cruciate ligament injury; biomechanics; female; hip; human; injuries; joint characteristics and functions; knee; rotation; soccer; sport injury; videorecording","Koga H., Nakamae A., Shima Y., Et al., Mechanisms for noncontact anterior cruciate ligament injuries: knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, pp. 2218-2225, (2010); Koga H., Bahr R., Myklebust G., Engebretsen L., Grund T., Krosshaug T., Estimating anterior tibial translation from model-based image-matching of a noncontact anterior cruciate ligament injury in professional football: a case report, Clin J Sport Med, 21, pp. 271-274, (2011); Krosshaug T., Slauterbeck J.R., Engebretsen L., Bahr R., Biomechanical analysis of anterior cruciate ligament injury mechanisms: three-dimensional motion reconstruction from video sequences, Scand J Med Sci Sports, 17, pp. 508-519, (2007); Bere T., Mok K.M., Koga H., Krosshaug T., Nordsletten L., Bahr R., Kinematics of anterior cruciate ligament ruptures in World Cup alpine skiing: 2 case reports of the slip-catch mechanism, Am J Sports Med, 41, pp. 1067-1073, (2013); Walden M., Krosshaug T., Bjorneboe J., Andersen T.E., Faul O., Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: a systematic video analysis of 39 cases, Br J Sports Med, 49, pp. 1452-1460, (2015); Grassi A., Smiley S.P., Roberti di Sarsina T., Et al., Mechanisms and situations of anterior cruciate ligament injuries in professional male soccer players: a YouTube-based video analysis, Eur J Orthop Surg Traumatol; Brophy R.H., Stepan J.G., Silvers H.J., Mandelbaum B.R., Defending puts the anterior cruciate ligament at risk during soccer: a gender-based analysis, Sports Health, 7, pp. 244-249, (2015); Koga H., Muneta T., Bahr R., Engebretsen L., Krosshaug T., Video analysis of ACL injury mechanism using a model-based image-matching technique, Sports Injuries and Prevention, pp. 109-120, (2015); Koga H., Nakamae A., Shima Y., Bahr R., Krosshaug T., Hip and ankle kinematics in noncontact anterior cruciate ligament injury situations: video analysis using model-based image matching, Am J Sports Med; Sheehan F.T., Sipprell W.H., Boden B.P., Dynamic sagittal plane trunk control during anterior cruciate ligament injury, Am J Sports Med, 40, pp. 1068-1074, (2012); Krosshaug T., Bahr R., A model-based image-matching technique for three-dimensional reconstruction of human motion from uncalibrated video sequences, J Biomech, 38, pp. 919-929, (2005); Sasaki S., Koga H., Krosshaug T., Kaneko S., Fukubayashi T., Biomechanical analysis of defensive cutting actions during game situations: six cases in collegiate soccer competitions, J Hum Kinet, 46, pp. 9-18, (2015); Grood E.S., Suntay W.J., A joint coordination system for the clinical description of three-dimensional motions: application to the knee, J Biomech Eng, 105, pp. 136-144, (1983); Woltring H.G., A Fortran package for generalized, cross-validatory spline smoothing and differentiation, Adv Eng Softw, 8, pp. 104-113, (1986); Sheu C.L., Gray A.M., Brown D., Smith B.A., Sex differences in knee flexion angle during a rapid change of direction while running, Orthop J Sports Med, 3, pp. 1-5, (2015); Kristianslund E., Krosshaug T., Comparison of drop jumps and sport-specific sidestep cutting: implications for anterior cruciate ligament injury risk screening, Am J Sports Med, 41, pp. 684-688, (2013); Meinerz C.M., Malloy P., Geiser C.F., Kipp K., Anticipatory effects on lower extremity neuromechanics during a cutting task, J Athl Train, 50, pp. 905-913, (2015); Tominaga R., Ishii Y., Ueda T., Kurokawa T., The effects of running speed on ground reaction forces and lower limb kinematics during single-leg stop movement, J Strength Cond Res, 30, pp. 1224-1230, (2016); Nagano Y., Ida H., Akai M., Fukubayashi T., Relationship between three-dimensional kinematics of knee and trunk motion during shuttle run cutting, J Sports Sci, 29, pp. 1525-1534, (2011); Boden B.P., Torg J.S., Knowles S.B., Hewett T.E., Video analysis of anterior cruciate ligament injury: abnormalities in hip and ankle kinematics, Am J Sports Med, 37, pp. 252-259, (2009); Hewett T.E., Torg J.S., Boden B.P., Video analysis of trunk and knee motion during non-contact anterior cruciate ligament injury in female athletes: lateral trunk and knee abduction motion are combined components of the injury mechanism, Br J Sports Med, 3, pp. 417-422, (2009); Krosshaug T., Nakamae A., Boden B.P., Et al., Mechanisms of anterior cruciate ligament injury in basketball: video analysis of 39 cases, Am J Sports Med, 35, pp. 359-367, (2007); Yu B., Lin C.F., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clin Biomech (Bristol, Avon), 21, pp. 297-305, (2006); Meyer E.G., Haut R.C., Excessive compression of the human tibio-femoral joint causes ACL rupture, J Biomech, 38, pp. 2311-2316, (2005); Schmitz R.J., Kulas A.S., Perrin D.H., Riemann B.L., Shultz S.J., Sex differences in lower extremity biomechanics during single leg landings, Clin Biomech (Bristol, Avon), 22, pp. 681-688, (2007); Hashemi J., Breighner R., Chandrashekar N., Et al., Hip extension, knee flexion paradox: a new mechanism for non-contact ACL injury, J Biomech, 44, pp. 577-585, (2011); Hashemi J., Chandrashekar N., Jang T., Karpat F., Oseto M., Ekwaro-Osire S., An alternative mechanism of non-contact anterior cruciate ligament injury during jump-landing: in-vitro simulation, Exp Mech, 47, pp. 347-354, (2007); Bedi A., Warren R.F., Wojtys E.M., Et al., Restriction in hip internal rotation is associated with an increased risk of ACL injury, Knee Surg Sports Traumatol Arthrosc, 24, pp. 2024-2031, (2016); Lopes O.V., Gomes J.L., de Freitas S.L., Range of motion and radiographic analysis of the hip in patients with contact and non-contact anterior cruciate ligament injury, Knee Surg Sports Traumatol Arthrosc, 24, pp. 2868-2873, (2016); Tainaka K., Takizawa T., Kobayashi H., Umimura M., Limited hip rotation and non-contact anterior cruciate ligament injury: a case-control study, Knee, 21, pp. 86-90, (2014); Kristianslund E., Faul O., Bahr R., Myklebust G., Krosshaug T., Sidestep cutting technique and knee abduction loading: implications for ACL prevention exercises, Br J Sports Med, 48, pp. 779-783, (2014); Arendt E.A., Agel J., Dick R., Anterior cruciate ligament injury patterns among collegiate men and women, J Athl Train, 34, pp. 86-92, (1999); Walden M., Hagglund M., Magnusson H., Ekstrand J., Anterior cruciate ligament injury in elite football: a prospective three-cohort study, Knee Surg Sports Traumatol Arthrosc, 19, pp. 11-19, (2011); Stagni R., Fantozzi S., Cappello A., Leardini A., Quantification of soft tissue artefact in motion analysis by combining 3D fluoroscopy and stereophotogrammetry: a study on two subjects, Clin Biomech (Bristol, Avon), 20, pp. 320-329, (2005); Miranda D.L., Rainbow M.J., Crisco J.J., Fleming B.C., Kinematic differences between optical motion capture and biplanar videoradiography during a jump-cut maneuver, J Biomech, 46, pp. 567-573, (2013); Leardini A., Chiari L., Della Croce U., Cappozzo A., Human movement analysis using stereophotogrammetry. Part 3. Soft tissue artifact assessment and compensation, Gait Posture, 21, pp. 212-225, (2005); Mok K.M., Bahr R., Krosshaug T., The effect of overhead target on the lower limb biomechanics during a vertical drop jump test in elite female athletes, Scand J Med Sci Sports, 27, pp. 161-166, (2017); Mok K.M., Fong D.T., Krosshaug T., Hung A.S., Yung P.S., Chan K.M., An ankle joint model-based image-matching motion analysis technique, Gait Posture, 34, pp. 71-75, (2011); Krosshaug T., Nakamae A., Boden B., Et al., Estimating 3D kinematics from video sequences of running and cutting maneuvers – assessing the accuracy of simple visual inspection, Gait Posture, 26, pp. 378-385, (2007); Aizawa J., Ohji S., Koga H., Masuda T., Yagishita K., Correlations between sagittal plane kinematics and landing impact force during single-leg lateral jump-landings, J Phys Ther Sci, 28, pp. 2316-2321, (2016); Kaneko S., Sasaki S., Hirose N., Nagano Y., Fukano M., Fukubayashi T., Mechanism of anterior cruciate ligament injury in female soccer players, Asian J Sports Med, 8, (2017); Sugimoto D., Myer G.D., McKeon J.M., Hewett T.E., Evaluation of the effectiveness of neuromuscular training to reduce anterior cruciate ligament injury in female athletes: a critical review of relative risk reduction and numbers-needed-to-treat analyses, Br J Sports Med, 46, pp. 979-988, (2012); Sugimoto D., Myer G.D., Foss K.D., Hewett T.E., Specific exercise effects of preventive neuromuscular training intervention on anterior cruciate ligament injury risk reduction in young females: meta-analysis and subgroup analysis, Br J Sports Med, 49, pp. 282-289, (2015); Pfile K.R., Curioz B., Coach-led prevention programs are effective in reducing anterior cruciate ligament injury risk in female athletes: a number-needed-to-treat analysis, Scand J Med Sci Sports","S. Sasaki; Faculty of Health Sciences, Tokyo Ariake University of Medical and Health Sciences, Koto-ku, Tokyo, Japan; email: sasaki@tau.ac.jp","","Blackwell Munksgaard","09057188","","SMSSE","29144568","English","Scand. J. Med. Sci. Sports","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85038003484" "Grassi A.; Tosarelli F.; Agostinone P.; Macchiarola L.; Zaffagnini S.; Della Villa F.","Grassi, Alberto (57205264407); Tosarelli, Filippo (57217386930); Agostinone, Piero (57216392229); Macchiarola, Luca (57189997335); Zaffagnini, Stefano (7003438311); Della Villa, Francesco (55780654000)","57205264407; 57217386930; 57216392229; 57189997335; 7003438311; 55780654000","Rapid Posterior Tibial Reduction After Noncontact Anterior Cruciate Ligament Rupture: Mechanism Description From a Video Analysis","2020","Sports Health","12","5","","462","469","7","13","10.1177/1941738120936673","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85088363354&doi=10.1177%2f1941738120936673&partnerID=40&md5=be03472d2a45fe260e57a2c49cb1eb77","IIa Clinica Ortopedica e Traumatologica, IRCSS Istituto Ortopedico Rizzoli, Bologna, Italy; Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy","Grassi A., IIa Clinica Ortopedica e Traumatologica, IRCSS Istituto Ortopedico Rizzoli, Bologna, Italy; Tosarelli F., Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy; Agostinone P., IIa Clinica Ortopedica e Traumatologica, IRCSS Istituto Ortopedico Rizzoli, Bologna, Italy; Macchiarola L., IIa Clinica Ortopedica e Traumatologica, IRCSS Istituto Ortopedico Rizzoli, Bologna, Italy; Zaffagnini S., IIa Clinica Ortopedica e Traumatologica, IRCSS Istituto Ortopedico Rizzoli, Bologna, Italy; Della Villa F., Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy","Background: The mechanisms of noncontact anterior cruciate ligament (ACL) injuries are an enormously debated topic in sports medicine; however, the late phases of injury have not yet been investigated. Hypothesis: A well-defined posterior tibial translation can be visualized with its timing and patterns of knee flexion after ACL injury. Study Design: Case series. Level of Evidence: Level 4. Methods: A total of 137 videos of ACL injuries in professional male football (soccer) players were screened for a sudden posterior tibial reduction (PTR) in the late phase of noncontact ACL injury mechanism. The suitable videos were analyzed using Kinovea software for sport video analysis. The time of initial contact of the foot with the ground, the foot lift, the start of tibial reduction, and the end of tibial reduction were assessed. Results: A total of 21 videos exhibited a clear posterior tibial reduction of 42 ± 11 ms, after an average of 229 ± 81 ms after initial contact. The tibial reduction occurred consistently within the first 50 to 60 ms after foot lift (55 ± 30 ms) and with the knee flexed between 45° and 90° (62%) or more than 90° (24%). Conclusion: A rapid posterior tibial reduction is consistently present in the late phases of noncontact ACL injuries in some male soccer players, with a consistent temporal relationship between foot lift from the ground and consistent degrees of knee flexion near or above 90°. Clinical Relevance: This study provides insight into the late phases of ACL injury. The described mechanism, although purely theoretical, could be responsible for commonly observed intra-articular lesions. © 2020 The Author(s).","ACL injury; biomechanics; noncontact; soccer; video analysis","Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Humans; Knee; Male; Soccer; Tibia; Video Recording; anterior cruciate ligament injury; biomechanics; human; injury; knee; male; pathophysiology; physiology; soccer; tibia; videorecording","Arnold J.A., Coker T.P., Heaton L.M., Park J.P., Harris W.D., Natural history of anterior cruciate tears, Am J Sports Med, 7, pp. 305-313, (1979); Ayre C., Hardy M., Scally A., Et al., The use of history to identify anterior cruciate ligament injuries in the acute trauma setting: the “LIMP index., Emerg Med J, 34, pp. 302-307, (2017); DeMorat G., Weinhold P., Blackburn T., Chudik S., Garrett W., Aggressive quadriceps loading can induce noncontact anterior cruciate ligament injury, Am J Sports Med, 32, pp. 477-483, (2004); Feagin J.A., Curl W.W., Isolated tear of the anterior cruciate ligament: 5-year follow-up study, Am J Sports Med, 4, pp. 95-100, (1976); Fetto J.F., Marshall J.L., The natural history and diagnosis of anterior cruciate ligament insufficiency, Clin Orthop Relat Res, 147, pp. 29-38, (1980); Fung D.T., Zhang L.Q., Modeling of ACL impingement against the inter-condylar notch, Clin Biomech (Bristol, Avon), 18, pp. 933-941, (2003); Grassi A., Smiley S.P., Roberti D., Sarsina T., Et al., Mechanisms and situations of anterior cruciate ligament injuries in professional male soccer players: a YouTube-based video analysis, Eur J Orthop Surg Traumatol, 27, pp. 967-981, (2017); Kaplan P.A., Gehl R.H., Dussault R.G., Anderson M.W., Diduch D.R., Bone contusions of the posterior lip of the medial tibial plateau (contrecoup injury) and associated internal derangements of the knee at MR imaging, Radiology, 211, pp. 747-753, (1999); Koga H., Bahr R., Myklebust G., Engebretsen L., Grund T., Krosshaug T., Estimating anterior tibial translation from model-based image-matching of a noncontact anterior cruciate ligament injury in professional football: a case report, Clin J Sport Med, 21, pp. 271-274, (2011); Koga H., Nakamae A., Shima Y., Et al., Mechanisms for noncontact anterior cruciate ligament injuries: knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, pp. 2218-2225, (2010); Krosshaug T., Andersen T.E., Olsen O.E., Myklebust G., Bahr R., Research approaches to describe the mechanisms of injuries in sport: limitations and possibilities, Br J Sports Med, 39, pp. 330-339, (2005); Meyer E.G., Haut R.C., Anterior cruciate ligament injury induced by internal tibial torsion or tibiofemoral compression, J Biomech, 41, pp. 3377-3383, (2008); Patel S.A., Hageman J., Quatman C.E., Wordeman S.C., Hewett T.E., Prevalence and location of bone bruises associated with anterior cruciate ligament injury and implications for mechanism of injury: a systematic review, Sports Med, 44, pp. 281-293, (2014); Speer K.P., Spritzer C.E., Bassett F.H., Feagin J.A., Garrett W.E., Osseous injury associated with acute tears of the anterior cruciate ligament, Am J Sports Med, 20, pp. 382-389, (1992); Walden M., Krosshaug T., Bjorneboe J., Andersen T.E., Faul O., Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: a systematic video analysis of 39 cases, Br J Sports Med, 49, pp. 1452-1460, (2015); Zhang L., Hacke J.D., Garrett W.E., Liu H., Yu B., Bone bruises associated with anterior cruciate ligament injury as indicators of injury mechanism: a systematic review, Sports Med, 49, pp. 453-462, (2019)","L. Macchiarola; IIa Clinica Ortopedica e Traumatologica, IRCSS Istituto Ortopedico Rizzoli, Bologna, Italy; email: luca.macchiarola@hotmail.it","","SAGE Publications Inc.","19417381","","","32697672","English","Sports Health","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85088363354" "Theobald P.; Whitelegg L.; Nokes L.D.M.; Jones M.D.","Theobald, Peter (26653838800); Whitelegg, Liam (36098468300); Nokes, Leonard D.M. (56867478700); Jones, Michael D. (55491028600)","26653838800; 36098468300; 56867478700; 55491028600","The predicted risk of head injury from fall-related impacts on to third-generation artificial turf and grass soccer surfaces: A comparative biomechanical analysis","2010","Sports Biomechanics","9","1","","29","37","8","16","10.1080/14763141003690245","https://www.scopus.com/inward/record.uri?eid=2-s2.0-77951558455&doi=10.1080%2f14763141003690245&partnerID=40&md5=ce96b3b15c267a548242867892804d60","Trauma Biomechanics Research Group, Institute of Medical Engineering and Medical Physics, Cardiff University, The Parade, Cardiff, CF24 3AA, United Kingdom","Theobald P., Trauma Biomechanics Research Group, Institute of Medical Engineering and Medical Physics, Cardiff University, The Parade, Cardiff, CF24 3AA, United Kingdom; Whitelegg L., Trauma Biomechanics Research Group, Institute of Medical Engineering and Medical Physics, Cardiff University, The Parade, Cardiff, CF24 3AA, United Kingdom; Nokes L.D.M., Trauma Biomechanics Research Group, Institute of Medical Engineering and Medical Physics, Cardiff University, The Parade, Cardiff, CF24 3AA, United Kingdom; Jones M.D., Trauma Biomechanics Research Group, Institute of Medical Engineering and Medical Physics, Cardiff University, The Parade, Cardiff, CF24 3AA, United Kingdom","The risk of soccer players sustaining mild traumatic brain injury (MTBI) following head impact with a playing surface is unclear. This study investigates MTBI by performing headform impact tests from varying heights onto a range of third-generation artificial turf surfaces. Each turf was prepared as per manufacturers specifications within a laboratory, before being tested immediately following installation and then again after a bedding-in period. Each turf was tested dry and when wetted to saturation. Data from the laboratory tests were compared to an in situ third-generation surface and a professional grass surface. The surface performance threshold was set at a head impact criterion (HIC) = 400, which equates to a 10% risk of the head impact causing MTBI. All six third-generation surfaces had a >10% risk of MTBI from a fall >0.77 m; the inferior surfaces required a fall from just 0.46 m to have a 10% MTBI risk. Wetting the artificial turf did not produce a statistically significant improvement (P > 0.01). The in situ third-generation playing surface produced HIC values within the range of bedded-in experimental values. However, the natural turf pitch was the superior performer - necessitating fall heights exceeding those achievable during games to achieve HIC = 400. © 2010 Taylor & Francis.","Artificial; Head; Injury; Soccer; Turf","","Beckwith J.G., Chu J.J., Greenwald R.M., Validation of a noninvasive system for measuring head acceleration for use during boxing competition, Journal of Applied Biomechanics, 23, pp. 238-244, (2007); Bjorneboe J., Anderson T.E., Bahr R., Risk of injury on artificial turf in elite football, British Journal of Sports Medicine, 42, pp. 494-495, (2008); Boden B.P., Kirkendall D.T., Garrett W.E.J., Concussion incidence in elite college soccer players, American Journal of Sports Medicine, 26, pp. 238-241, (1998); BS 7188:1998 Impact Absorbing Playground Surfacing: Performance Requirements and Test Methods, (1998); Cory C.Z., Jones M.D., Development of a simulation system for performing in situ surface tests to assess the potential severity of head impacts from alleged childhood short falls, Forensic Science International, 163, pp. 102-114, (2006); Ekstrand J., Timpka T., Hagglund M., Risk of injury in elite football played on artificial turf versus natural grass: A prospective two-cohort study, British Journal of Sports Medicine, 40, pp. 975-980, (2006); Quality Concept For Football Turf, (2008); Fuller C.W., Dick R.W., Corlette J., Schmalz R., Comparison of the incidence, nature and cause of injuries sustained on grass and new generation artificial turf by male and female football players. Part 1: Match injuries, British Journal of Sports Medicine, 41, SUPPL. 1, (2007); Fuller C.W., Dick R.W., Corlette J., Schmalz R., Comparison of the incidence, nature and cause of injuries sustained on grass and new generation artificial turf by male and female football players. Part 2: Training injuries, British Journal of Sports Medicine, 41, SUPPL. 1, (2007); Funk J.R., Duma S.M., Manoogian S.J., Rowson S., Biomechanical risk estimates for mild traumatic brain injury, Annual Proceedings-Association For the Advancement of Automotive Medicine, 51, pp. 343-361, (2007); Guskiewicz K.M., Weaver N.L., Padua D.A., Garrett Jr. W.E., Epidemiology of concussion in collegiate and high school football players, American Journal of Sports Medicine, 28, pp. 643-650, (2000); Hrysomallis C., Impact energy attentuation of protective football headgear against a yielding surface, Journal of Science and Medicine In Sport, 7, pp. 156-164, (2004); King A.I., Yang K.H., Zhang L., Viano D.C., Is head injury caused by linear or angular acceleration?, International Conference On the Biomechanics of Impact, (2003); Mahieu N.N., Witvrouw E., Stevens V., van Tiggelen D., Roget P., Intrinsic risk factors for the development of achilles tendon overuse injury: A prospective study, American Journal of Sports Medicine, 34, pp. 226-235, (2006); Naunheim R., McGurren M., Standeven J., Fucetola R., Lauryssen C., Deibert E., Does the use of artificial turf contribute to head injuries?, Journal of Trauma, 53, pp. 691-694, (2002); Naunheim R., Parrott H., Standeven J., A comparison of artificial turf, Journal of Trauma, 57, pp. 1311-1314, (2004); National Highways & Transport Safety Administration (NHTSA) Code of Federal Regulations, (1998); Prasad P., Mertz H.J., The position of the United States delegation to the ISO working group 6 on the use of HIC in the automotive environment, SAE, (1985); Shorten M.R., Sports surfaces and the risk of traumatic brain injury, Sports Surfaces, (2003); Soligard T., Bahr R., Anderson T.E., Risk of football injuries on artificial turf in youth football: 3-year data from the Norway Cup tournament, British Journal of Sports Medicine, 42, (2008); Steffen K., Andersen T.E., Bahr R., Risk of injury on artificial turf and natural grass in young female football players, British Journal of Sports Medicine, 41, SUPPL. 1, (2007); Stojsih S., Boitano M., Wilhelm M., Bir C., A prospective study of punch biomechanics and cognitive function for amateur boxers, British Journal of Sports Medicine [Epub Ahead of Print], (2008)","M. D. Jones; Trauma Biomechanics Research Group, Institute of Medical Engineering and Medical Physics, Cardiff University, The Parade, Cardiff, CF24 3AA, United Kingdom; email: JonesMD1@Cardiff.ac.uk","","Routledge","14763141","","","20446637","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-77951558455" "Iosa M.; Morelli D.; Nisi E.; Sorbara C.; Negrini S.; Gentili P.; Paolucci S.; Fusco A.","Iosa, Marco (6507550201); Morelli, Daniela (7005579963); Nisi, Enrica (58391685700); Sorbara, Carlo (56059383300); Negrini, Stefano (16307641300); Gentili, Paola (56059553700); Paolucci, Stefano (35411524900); Fusco, Augusto (54397097500)","6507550201; 7005579963; 58391685700; 56059383300; 16307641300; 56059553700; 35411524900; 54397097500","Assessment of upper body accelerations in young adults with intellectual disabilities while walking, running, and dual-task running","2014","Human Movement Science","34","1","","187","195","8","14","10.1016/j.humov.2014.02.005","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899127571&doi=10.1016%2fj.humov.2014.02.005&partnerID=40&md5=c3f5f49d474db57dcf7328065e7d2bd2","Clinical Laboratory of Experimental Neurorehabilitation, Fondazione Santa Lucia I.R.C.C.S., Rome, Italy; Fondazione Santa Lucia I.R.C.C.S., Rome, Italy; Totti Soccer School, Rome, Italy; Physical and Rehabilitation Medicine, University of Brescia, Italy; Don Gnocchi Foundation I.R.C.C.S., Milan, Italy","Iosa M., Clinical Laboratory of Experimental Neurorehabilitation, Fondazione Santa Lucia I.R.C.C.S., Rome, Italy; Morelli D., Fondazione Santa Lucia I.R.C.C.S., Rome, Italy; Nisi E., Totti Soccer School, Rome, Italy; Sorbara C., Totti Soccer School, Rome, Italy; Negrini S., Physical and Rehabilitation Medicine, University of Brescia, Italy, Don Gnocchi Foundation I.R.C.C.S., Milan, Italy; Gentili P., Fondazione Santa Lucia I.R.C.C.S., Rome, Italy; Paolucci S., Clinical Laboratory of Experimental Neurorehabilitation, Fondazione Santa Lucia I.R.C.C.S., Rome, Italy, Fondazione Santa Lucia I.R.C.C.S., Rome, Italy; Fusco A., Clinical Laboratory of Experimental Neurorehabilitation, Fondazione Santa Lucia I.R.C.C.S., Rome, Italy","There is an increasing interest about upper body accelerations during locomotion and how they are altered by physical impairments. Recent studies have demonstrated that cognitive impairments affect gait stability in the elderly (i.e., their capacity for smoothing upper body accelerations during walking) but little attention has been paid to young adults with intellectual disabilities. The purpose of this study was to examine upright stability in young adults with intellectual disabilities during walking, running, and dual-task running (playing soccer). To this aim a wearable trunk-mounted device that permits on-field assessment was used to quantify trunk acceleration of 18 male teenagers with intellectual disabilities (IDG) and 7 mental-age-matched healthy children (HCG) who participated in the same soccer program. We did not find any significant difference during walking in terms of speed, whereas speed differences were found during running (p=.001). Upper body accelerations were altered in a pathology-specific manner during the dual task: the performance of subjects with autistic disorders was compromised while running and controlling the ball with the feet. Differences in upright locomotor patterns between IDG and HCG emerged during more demanding motor tasks in terms of a loss in the capacity of smoothing accelerations at the trunk level. © 2014.","Accelerometry; Autism disorders; Biomechanics; Down syndrome; Kinematic analysis; Pervasive developmental disorders","Acceleration; Adolescent; Attention; Child Development Disorders, Pervasive; Female; Gait; Humans; Intellectual Disability; Male; Postural Balance; Reference Values; Running; Sex Factors; Soccer; Walking; Young Adult; adult; article; autism; body movement; clinical article; controlled study; Down syndrome; human; intellectual impairment; male; pervasive developmental disorder not otherwise specified; running; soccer; social participation; upper body acceleration; walking; walking speed; young adult; acceleration; adolescent; attention; body equilibrium; Child Development Disorders, Pervasive; female; gait; Intellectual Disability; reference value; sex difference","Bergamini E., Picerno P., Pillet H., Natta F., Thoreux P., Camomilla V., Estimation of temporal parameters during sprint running using a trunk-mounted inertial measurement unit, Journal of Biomechanics, 45, pp. 1123-1126, (2012); Bohm H., Doderlein L., Gait asymmetries in children with cerebral palsy: Do they deteriorate with running?, Gait & Posture, 35, pp. 322-327, (2012); Cappozzo A., Low frequency self-generated vibration during ambulation in normal men, Journal of Biomechanics, 15, pp. 599-609, (1982); Esposito G., Venuti P., Apicella F., Muratori F., Analysis of unsupported gait in toddlers with autism, Brain Development, 33, pp. 367-373, (2011); Forner-Cordero A., Mateu-Arce M., Forner-Cordero I., Alcantara E., Moreno J.C., Pons J.L., Study of the motion artefacts of skin-mounted inertial sensors under different attachment conditions, Physiological Measurement, 29, (2008); Hinckson E.A., Curtis A., Measuring physical activity in children and youth living with intellectual disabilities: A systematic review, Research in Developmental Disabilities, 34, pp. 72-86, (2012); Horner F.E., Slade J., Bilzon J.L., The effect of anatomical placement and trunk adiposity on the reliability and validity of triaxial accelerometer output during treadmill exercise, Journal of Physical Activity & Health, 10, pp. 1193-1200, (2013); Ijmker T., Lamoth C.J., Gait and cognition: The relationship between gait stability and variability with executive function in persons with and without dementia, Gait & Posture, 35, pp. 126-130, (2012); Iosa M., Fusco A., Morone G., Paolucci S., Walking there: Environmental influence on walking-distance estimation, Behavioural Brain Research, 226, pp. 124-132, (2012); Iosa M., Fusco A., Morone G., Pratesi L., Coiro P., Venturiero V., Et al., Assessment of upper body dynamic stability during walking in patients with subacute stroke, Journal of Rehabilitation Research and Development, 49, pp. 439-450, (2012); Iosa M., Marro T., Paolucci S., Morelli D., Stability and harmony of gait in children with cerebral palsy, Research in Developmental Disabilities, 33, pp. 129-135, (2012); Iosa M., Mazza C., Pecoraro F., Aprile I., Ricci E., Cappozzo A., Control of the upper body movements during level walking in patients with facioscapulohumeral dystrophy, Gait & Posture, 31, pp. 68-72, (2010); Iosa M., Morelli D., Marro T., Paolucci S., Fusco A., Ability and stability of running and walking in children with cerebral palsy, Neuropediatrics, 44, pp. 147-154, (2013); Jarrold C., Brock J., To match or not to match? Methodological issues in autism-related research, Journal of Autism and Developmental Disorders, 34, pp. 81-86, (2004); Kavanagh J.J., Lower trunk motion and speed-dependence during walking, Journal of Neuroengineering and Rehabilitation, 6, (2009); Kavanagh J.J., Barrett R.S., Morrison S., Upper body accelerations during walking in healthy young and elderly men, Gait & Posture, 20, pp. 291-298, (2004); Kavanagh J.J., Menz H.B., Accelerometry: A technique for quantifying movement patterns during walking, Gait & Posture, 28, pp. 1-15, (2008); Kavanagh J.J., Morrison S., James D.A., Barrett R., Reliability of segmental accelerations measured using a new wireless gait analysis system, Journal of Biomechanics, 39, pp. 2863-2872, (2006); Kern L., Koegel R.L., Dunlap G., The influence of vigorous versus mild exercise on autistic stereotyped behaviours, Journal of Autism and Developmental Disorders, 14, pp. 57-67, (1984); Kern L., Koegel R.L., Dyer K., Blew P.A., Fenton L.R., The effects of physical exercise on self-stimulation and appropriate responding in autistic children, Journal of Autism and Developmental Disorders, 12, pp. 399-419, (1982); Khalili M.A., Elkins M.R., Aerobic exercise improves lung function in children with intellectual disability: A randomised trial, Australian Journal of Physiotherapy, 55, pp. 171-175, (2009); Kioumourtzoglou E., Batsiou S., Theodorakis Y., Mauromatis G., Selected motor skills of mentally retarded and nonretarded individuals, Perceptual Motor Skills, 78, pp. 1011-1015, (1994); Kubo M., Ulrich B.D., Early stage of walking: Development of control in mediolateral and antoposterior directions, Journal of Motor Behaviour, 38, pp. 229-237, (2006); Lamoth C.J., van Deudekom F.J., van Campen J.P., Appels B.A., de Vries O.J., Pijnappels M., Gait stability and variability measures show effects of impaired cognition and dual tasking in frail people, Journal of Neuroengineering and Rehabilitation, 8, (2011); Masci I., Vannozzi G., Getchell N., Cappozzo A., Assessing hopping developmental level in childhood using wearable inertial sensor devices, Motor Control, 16, pp. 317-328, (2012); Mazza C., Zok M., Cappozzo A., Head stabilization in children of both genders during level walking, Gait & Posture, 31, pp. 429-432, (2010); McConkey R., Dowling S., Hassan D., Menke S., Promoting social inclusion through Unified Sports for youth with intellectual disabilities: A five-nation study, Journal of Intellectual Disability Research, 57, pp. 923-935, (2013); Menz H.B., Walking stability in young, old and neuropathic subjects, (2002); Menz H.B., Lord S.R., Fitzpatrick R.C., Acceleration patterns of the head and pelvis when walking on level and irregular surfaces, Gait & Posture, 18, pp. 35-46, (2003); Mizuike C., Ohgi S., Morita S., Analysis of stroke patient walking dynamics using a tri-axial accelerometer, Gait & Posture, 30, pp. 60-64, (2009); Moe-Nilssen R., A new method for evaluating motor control in gait under real-life environmental conditions. Part 2: Gait analysis, Clinical Biomechanics, 13, pp. 328-335, (1998); Moe-Nilssen R., Test-retest reliability of trunk accelerometry during standing and walking, Archives of Physical Medicine and Rehabilitation, 79, pp. 1377-1385, (1998); Pastula R.M., Stopka C.B., Delisle A.T., Hass C.J., Effect of moderate-intensity exercise training on the cognitive function of young adults with intellectual disabilities, Journal of Strength and Conditioning Research, 26, pp. 3441-3448, (2012); Picerno P., Camomilla V., Capranica L., Countermovement jump performance assessment using a wearable 3D inertial measurement unit, Journal of Sports Sciences, 29, pp. 139-146, (2011); Rigoldi C., Galli M., Albertini G., Gait development during lifespan in subjects with Down syndrome, Research in Developmental Disabilities, 32, pp. 158-163, (2011); Senden R., Savelberg H.H., Grimm B., Heyligers I.C., Meijer K., Accelerometry-based gait analysis, an additional objective approach to screen subjects at risk for falling, Gait & Posture, 36, pp. 296-300, (2012); Vernazza-Martin S., Martin N., Vernazza A., Lepellec-Muller A., Rufo M., Massion J., Et al., Goal directed locomotion and balance control in autistic children, Journal of Autism and Developmental Disorders, 35, pp. 91-102, (2005); Vernazza-Martin S., Longuet S., Chamot J.M., Oreve M.J., Emotions and voluntary action: what link in children with autism?, Behavioural Brain Research, 251, pp. 176-187, (2013); Winter D.A., Human balance and posture control during standing and walking, Gait & Posture, 3, pp. 193-214, (1995); Official records of the World Health Organization, 2, (1946); Yogev-Seligmann G., Hausdorff J.M., Giladi N., Do we always prioritize balance when walking? Towards an integrated model of task prioritization, Movement Disorders, 27, pp. 765-770, (2012)","M. Iosa; Clinical Laboratory of Experimental Neurorehabilitation, Fondazione Santa Lucia I.R.C.C.S., 00179 Rome, via Ardeatina 306, Italy; email: m.iosa@hsantalucia.it","","Elsevier","01679457","","HMSCD","24630612","English","Hum. Mov. Sci.","Article","Final","","Scopus","2-s2.0-84899127571" "Mok K.-M.; Kristianslund E.K.; Krosshaug T.","Mok, Kam-Ming (37070831800); Kristianslund, Eirik Klami (57645843600); Krosshaug, Tron (55888189500)","37070831800; 57645843600; 55888189500","The effect of thigh marker placement on knee valgus angles in vertical drop jumps and sidestep cutting","2015","Journal of Applied Biomechanics","31","4","","269","274","5","16","10.1123/jab.2014-0137","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938322825&doi=10.1123%2fjab.2014-0137&partnerID=40&md5=e0053cd8ea174d7fd9bf53fd7a2946da","Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway","Mok K.-M., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Kristianslund E.K., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Krosshaug T., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway","Knee valgus angles measured in sidestep cutting and vertical drop jumps are key variables in research on anterior cruciate ligament (ACL) injury causation. These variables are also used to quantify knee neuromuscular control and ACL injury risk. The aims of the current study were to (1) quantify the differences in the calculated knee valgus angles between 6 different thigh marker clusters, (2) investigate the trial ranking based on their knee valgus angles, and (3) investigate the influence of marker clusters on the cross-talk effect. Elite female handball and football players (n = 41) performed sidestep cutting and vertical drop jumping motions. We found systematic differences up to almost 15° of peak valgus between the marker sets in the drop jump test. The Spearman's rank correlation coefficient varied from .505 to .974 among the 6 marker sets. In addition, the cross-talk effect varied considerably between the marker clusters. The results of the current study indicate that the choice of thigh marker cluster can have a substantial impact on the magnitude of knee valgus angle, as well as the trial ranking. A standardized thigh marker cluster, including nonanatomical landmark, is needed to minimize the variation of the measurement. © 2015 Human Kinetics, Inc.","Kinematics; Knee biomechanics; Marker cluster; Motion analysis","Anterior Cruciate Ligament Injuries; Athletic Injuries; Biomechanical Phenomena; Female; Humans; Knee Joint; Movement; Norway; Soccer; Thigh; Young Adult; Crosstalk; Drops; Kinematics; Motion analysis; Anterior cruciate ligament injury; Football players; Key variables; Knee biomechanics; Marker cluster; Neuromuscular control; Spearman's rank correlation coefficients; Vertical drops; adult; anterior cruciate ligament injury; anterior posterior axis; Article; biomechanics; clinical article; correlation coefficient; female; football; greater trochanter; ground reaction force; human; jumping; knee function; knee valgus angle; musculoskeletal system parameters; sidestep cutting; thigh; young adult; injuries; knee; movement (physiology); Norway; pathophysiology; physiology; soccer; sport injury; thigh; Physiological models","Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, 10, pp. 1745-1750, (2003); Imwalle L.E., Myer G.D., Ford K.R., Hewett T.E., Relationship between hip and knee kinematics in athletic women during cutting maneuvers: A possible link to noncontact anterior cruciate ligament injury and prevention, J Strength Cond Res, 23, 8, pp. 2223-2230, (2009); Kristianslund E., Krosshaug T., Comparison of drop jumps and sport-specific sidestep cutting: Implications for anterior cruciate ligament injury risk screening, Am J Sports Med, 41, 3, pp. 684-688, (2013); McLean S.G., Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: Potential for injury in women, Med Sci Sports Exerc, 31, 7, pp. 959-968, (1999); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes, Am J Sports Med, 33, 4, pp. 492-501, (2005); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of 3-dimensional motions - Application to the knee, J Biomech Eng, 105, 2, pp. 136-144, (1983); Wu G., Siegler S., Allard P., Et al., ISB recommendation on definitions of joint coordinate system of various joints for the reporting of human joint motion - Part 1: Ankle, hip, and spine, J Biomech, 35, 4, pp. 543-548, (2002); Leardini A., Chiari L., Della Croce U., Cappozzo A., Human movement analysis using stereophotogrammetry - Part 3. Soft tissue artifact assessment and compensation, Gait Posture, 21, 2, pp. 212-225, (2005); Baker R., Gait analysis methods in rehabilitation, J Neuroeng Rehabil, 3, (2006); Ferrari A., Benedetti M.G., Pavan E., Et al., Quantitative comparison of five current protocols in gait analysis, Gait Posture, 28, 2, pp. 207-216, (2008); Cappozzo A., Catani F., Leardini A., Benedetti M.G., DellaCroce U., Position and orientation in space of bones during movement: Experimental artefacts, Clin Biomech (Bristol, Avon), 11, 2, pp. 90-100, (1996); Reinschmidt C., VandenBogert A.J., Nigg B.M., Lundberg A., Murphy N., Effect of skin movement on the analysis of skeletal knee joint motion during running, J Biomech, 30, 7, pp. 729-732, (1997); Wren T.A.L., Do K.P., Hara R., Rethlefsen S.A., Use of a patella marker to improve tracking of dynamic hip rotation range of motion, Gait Posture, 27, 3, pp. 530-534, (2008); Peters A., Galna B., Sangeux M., Morris M., Baker R., Quantification of soft tissue artifact in lower limb human motion analysis: A systematic review, Gait Posture, 31, 1, pp. 1-8, (2010); Schulz B.W., Kimmel W.L., Can hip and knee kinematics be improved by eliminating thigh markers?, Clin Biomech (Bristol, Avon), 25, 7, pp. 687-692, (2010); Vicon, Plug-in-Gait Modelling Instructions. Vicon Manual, Vicon612 Motion Systems, (2002); Bell A.L., Pedersen D.R., Brand R.A., A comparison of the accuracy of several hip center location prediction methods, J Biomech, 23, 6, pp. 617-621, (1990); Camomilla V., Cereatti A., Cheze L., Cappozzo A., A hip joint kinematics driven model for the generation of realistic thigh soft tissue artefacts, J Biomech, 46, 3, pp. 625-630, (2013); Piazza S.J., Cavanagh P.R., Measurement of the screw-home motion of the knee is sensitive to errors in axis alignment, J Biomech, 33, 8, pp. 1029-1034, (2000); Della Croce U., Leardini A., Chiari L., Cappozzo A., Human movement analysis using stereophotogrammetry - Part 4: Assessment of anatomical landmark misplacement and its effects on joint kinematics, Gait Posture, 21, 2, pp. 226-237, (2005); Pohl M.B., Lloyd C., Ferber R., Can the reliability of three-dimensional running kinematics be improved using functional joint methodology?, Gait Posture, 32, 4, pp. 559-563, (2010); Robinson M.A., Vanrenterghem J., An evaluation of anatomical and functional knee axis definition in the context of side-cutting, J Biomech, 45, 11, pp. 1941-1946, (2012); Schache A.G., Baker R., Lamoreux L.W., Defining the knee joint flexion-extension axis for purposes of quantitative gait analysis: An evaluation of methods, Gait Posture, 24, 1, pp. 100-109, (2006); Stagni R., Fantozzi S., Cappello A., Leardini A., Quantification of soft tissue artefact in motion analysis by combining 3D fluoroscopy and stereophotogrammetry: A study on two subjects, Clin Biomech (Bristol, Avon), 20, 3, pp. 320-329, (2005); Kristianslund E., Krosshaug T., Van Den Bogert A.J., Effect of low pass filtering on joint moments from inverse dynamics: Implications for injury prevention, J Biomech, 45, 4, pp. 666-671, (2012); Kristianslund E., Krosshaug T., Mok K.M., McLean S., Van Den Bogert A.J., Expressing the joint moments of drop jumps and sidestep cutting in different reference frames - Does it matter?, J Biomech, 47, 1, pp. 193-199, (2014); Kristianslund E., Faul O., Bahr R., Myklebust G., Krosshaug T., Sidestep cutting technique and knee abduction loading: Implications for ACL prevention exercises, Br J Sports Med, 48, 9, pp. 779-783, (2014); Nilstad A., Andersen T.E., Kristianslund E., Et al., Physiotherapists can identify-female football players with high knee valgus angles during vertical drop jumps using real-time observational screening, J Orthop Sports Phys Ther, 44, 5, pp. 358-365, (2014); Nilstad A., Andersen T.E., Bahr R., Holme I., Steffen K., Risk factors for lower extremity injuries in elite female soccer players, Am J Sports Med, 42, 4, pp. 940-948, (2014); Davis R.B., Ounpuu S., Tyburski D., Gage J.R., A gait analysis data-collection and reduction technique, Hum Mov Sci, 10, 5, pp. 575-587, (1991); Eng J.J., Winter D.A., Kinetic-analysis of the lower-limbs during walking - What information can be gained from a 3-dimensional model, J Biomech, 28, 6, pp. 753-758, (1995); Woltring H.J., A Fortran package for generalized, cross-validatory spline smoothing and differentiation, Adv Eng Softw, 8, 2, pp. 104-113, (1986); Soderkvist I., Wedin P.A., Determining the movements of the skeleton using well-configured markers, J Biomech, 26, 12, pp. 1473-1477, (1993); Zou K.H., Hall W.J., On estimating a transformation correlation coefficient, J Appl Stat, 29, 5, pp. 745-760, (2002); Zou K.H., Tuncali K., Silverman S.G., Correlation and simple linear regression, Radiology, 227, 3, pp. 617-622, (2003); Akbarshahi M., Schache A.G., Fernandez J.W., Baker R., Banks S., Pandy M.G., Non-invasive assessment of soft-tissue artifact and its effect on knee joint kinematics during functional activity, J Biomech, 43, 7, pp. 1292-1301, (2010); Monnet T., Thouze A., Pain M.T.G., Begon M., Assessment of reproducibility of thigh marker ranking during walking and landing tasks, Med Eng Phys, 34, 8, pp. 1200-1208, (2012); Sangeux M., Peters A., Baker R., Hip joint centre localization: Evaluation on normal subjects in the context of gait analysis, Gait Posture, 34, 3, pp. 324-328, (2011); Leardini A., Cappozzo A., Catani F., Et al., Validation of a functional method for the estimation of hip joint centre location, J Biomech, 32, 1, pp. 99-103, (1999); Myers C.A., Torry M.R., Peterson D.S., Et al., Measurements of tibiofemoral kinematics during soft and stiff drop landings using biplane fluoroscopy, Am J Sports Med, 39, 8, pp. 1714-1722, (2011); Torry M.R., Shelburne K.B., Myers C., Et al., High knee valgus in female subjects does not yield higher knee translations during drop landings: A biplane fluoroscopic study, J Orthop Res, 31, 2, pp. 257-267, (2013); Miranda D.L., Rainbow M.J., Crisco J.J., Fleming B.C., Kinematic differences between optical motion capture and biplanar videoradiography during a jump-cut maneuver, J Biomech, 46, 3, pp. 567-573, (2013); Chappell J.D., Limpisvasti O., Effect of a neuromuscular training program on the kinetics and kinematics of jumping tasks, Am J Sports Med, 36, 6, pp. 1081-1086, (2008)","T. Krosshaug; Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; email: tron.krosshaug@nih.no","","Human Kinetics Publishers Inc.","10658483","","JABOE","25838259","English","J. Appl. Biomech.","Article","Final","","Scopus","2-s2.0-84938322825" "Gredin N.V.; Bishop D.T.; Williams A.M.; Broadbent D.P.","Gredin, N. Viktor (57201672781); Bishop, Daniel T. (22984231600); Williams, A. Mark (35580552000); Broadbent, David P. (56366883200)","57201672781; 22984231600; 35580552000; 56366883200","Integrating explicit contextual priors and kinematic information during anticipation","2021","Journal of Sports Sciences","39","7","","783","791","8","11","10.1080/02640414.2020.1845494","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097565762&doi=10.1080%2f02640414.2020.1845494&partnerID=40&md5=1e979023c11048e88ff5466af560260b","Division of Sport, Health and Exercise Sciences, Department of Life Sciences, Brunel University London, London, United Kingdom; Centre for Cognitive Neuroscience, College of Health and Life Sciences, Brunel University London, London, United Kingdom; Department of Health, Kinesiology, and Recreation, University of Utah, Salt Lake City, UT, United States","Gredin N.V., Division of Sport, Health and Exercise Sciences, Department of Life Sciences, Brunel University London, London, United Kingdom; Bishop D.T., Division of Sport, Health and Exercise Sciences, Department of Life Sciences, Brunel University London, London, United Kingdom, Centre for Cognitive Neuroscience, College of Health and Life Sciences, Brunel University London, London, United Kingdom; Williams A.M., Department of Health, Kinesiology, and Recreation, University of Utah, Salt Lake City, UT, United States; Broadbent D.P., Division of Sport, Health and Exercise Sciences, Department of Life Sciences, Brunel University London, London, United Kingdom, Centre for Cognitive Neuroscience, College of Health and Life Sciences, Brunel University London, London, United Kingdom","We examined the interaction between explicit contextual priors and kinematic information during anticipation in soccer. We employed a video-based anticipation task where skilled soccer players had to predict the direction of the imminent actions of an attacking opponent in possession of the ball. The players performed the task both with and without explicit contextual priors pertaining to the opponent’s action tendencies. The strength of the opponent’s action tendencies was altered in order to manipulate the reliability of contextual priors (low vs. high). Moreover, the reliability of kinematic information (low vs. high) was manipulated using the temporal occlusion paradigm. The explicit provision of contextual priors biased anticipation towards the most likely direction, given the opponent’s action tendencies, and resulted in enhanced performance. This effect was greater under conditions where the reliability of kinematic information was low rather than high. When the reliability of kinematic information was high, the players used explicit contextual priors of high, but not low, reliability to inform their judgements. Findings suggest that athletes employ reliability-based strategies when integrating contextual priors with kinematic information during anticipation. The impact of explicit contextual priors is dependent on the reliability both of the priors and the evolving kinematic information. © 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.","Bayesian; decision making; probabilistic information; soccer; uncertainty","Adult; Athletes; Biomechanical Phenomena; Cues; Feedback, Sensory; Female; Humans; Judgment; Male; Reaction Time; Reproducibility of Results; Soccer; Video Recording; adult; association; athlete; biomechanics; decision making; female; human; male; physiology; reaction time; reproducibility; sensory feedback; soccer; videorecording","Araujo D., Davids K., Hristovski R., The ecological dynamics of decision making in sport, Psychology of Sport and Exercise, 7, 6, pp. 653-676, (2006); Batterham A.M., Hopkins W.G., Making meaningful inferences about magnitudes, International Journal of Sports Physiology and Performance, 1, 1, pp. 50-57, (2006); Broadbent D.P., Gredin N.V., Rye J.L., Williams A.M., Bishop D.T., The impact of contextual priors and anxiety on performance effectiveness and processing efficiency in anticipation, Cognition & Emotion, (2018); Brouwer A.M., Knill D.C., Humans use visual and remembered information about object location to plan pointing movements, Journal of Vision, 9, 1, pp. 1-19, (2009); Canal-Bruland R., Mann D.L., Time to broaden the scope of research on anticipatory behavior: A case for the role of probabilistic information, Frontiers in Psychology, 6, (2015); Cohen J., Statistical power analysis for the behavioral sciences (2nd ed, (1988); Cumming G., Understanding the new statistics: Effect sizes, confidence intervals, and meta-analysis, (2012); Cumming G., The new statistics: Why and how, Psychological Science, 25, 1, pp. 7-29, (2014); Dror I.E., Peron A.E., Hind S.-L., Charlton D., When emotions get the better of us: The effect of contextual top-down processing on matching fingerprints, Applied Cognitive Psychology, 19, 6, pp. 799-809, (2005); Ericsson K.A., Ward P., Capturing the naturally occurring superior performance of experts in the laboratory: Toward a science of expert and exceptional performance, Current Directions in Psychological Science, 16, 6, pp. 346-350, (2007); Farrow D., Abernethy B., Jackson R.C., Probing expert anticipation with the temporal occlusion paradigm: Experimental investigations of some methodological issues, Motor Control, 9, 3, pp. 330-349, (2005); Gray R., How do batters use visual, auditory, and tactile information about the success of a baseball swing?, Research Quarterly for Exercise and Sport, 80, 3, pp. 491-501, (2009); Gray R., Canal-Bruland R., Integrating visual trajectory and probabilistic information in baseball batting, Psychology of Sport and Exercise, 36, January, pp. 123-131, (2018); Gredin N.V., Bishop D.T., Broadbent D.P., Tucker A., Williams A.M., Experts integrate contextual priors and environmental information to improve anticipation efficiency, Journal of Experimental Psychology, (2018); Gredin N.V., Broadbent D.P., Findon J.L., Williams A.M., Bishop D.T., The impact of task load on the integration of explicit contextual priors and visual information during anticipation, Psychophysiology, 57, 6, pp. 1-13, (2020); Gredin N.V., Broadbent D.P., Williams A.M., Bishop D.T., Judgement utility modulates the use of explicit contextual priors and visual information during anticipation, Psychology of Sport and Exercise, 45, July, (2019); Helm F., Canal-Bruland R., Mann D.L., Troje N.F., Munzert J., Integrating situational probability and kinematic information when anticipating disguised movements, Psychology of Sport and Exercise, 46January, (2020); Hopkins W.G., Probabilities of clinical or practical significance, Sportscience, 6July, (2002); Hopkins W.G., Sample sizes for various inferential methods, Sportscience, 24, 24, pp. 17-27, (2020); Jackson R.C., Ashford K.J., Norsworthy G., Attentional focus, dispositional reinvestment, and skilled motor performance under pressure, Journal of Sport & Exercise Psychology, 28, 1, pp. 49-68, (2006); Jackson R.C., Barton H., Bishop D.T., Knowledge is power? Outcome probability information impairs detection of deceptive intent, Psychology of Sport and Exercise, 50September, (2020); Loffing F., Canal-Bruland R., Anticipation in sport, Current Opinion in Psychology, 16August, pp. 6-11, (2017); Loffing F., Hagemann N., Skill differences in visual anticipation of type of throw in team-handball penalties, Psychology of Sport and Exercise, 15, 3, pp. 260-267, (2014); Mann D.T., Williams A.M., Ward P., Janelle C.M., Perceptual-cognitive expertise in sport : A meta-analysis, Journal of Sport & Exercise Psychology, 29, 4, pp. 457-478, (2007); Miyazaki M., Nozaki D., Nakajima Y., Testing Bayesian models of human coincidence timing, Journal of Neurophysiology, 94, 1, pp. 395-399, (2005); Muller S., Abernethy B., Expert anticipatory skill in striking sports: A review and a model, Research Quarterly for Exercise and Sport, 83, 2, pp. 175-187, (2012); Neyman J., Pearson E.S., On the problem of the most efficient tests of statistical hypotheses, Philosophical Transactions of the Royal Society Lond, 231, pp. 289-337, (1933); Pinder R.A., Davids K., Renshaw I., Araujo D., Representative learning design and functionality of research and practice in sport, Journal of Sport & Exercise Psychology, 33, 1, pp. 146-155, (2011); Roca A., Ford P.R., McRobert A.P., Williams A.M., Perceptual-cognitive skills and their interaction as a function of task constraints in soccer, Journal of Sport & Exercise Psychology, 35, 2, pp. 144-155, (2013); Roca A., Williams A.M., Ford P.R., Capturing and testing perceptual-cognitive expertise: A comparison of stationary and movement response methods, Behavior Research Methods, 46, 1, pp. 173-177, (2014); Runswick O.R., Roca A., Williams A.M., McRobert A.P., North J.S., The temporal integration of information during anticipation, Psychology of Sport and Exercise, 37, May, pp. 100-108, (2018); Runswick O.R., Roca A., Williams A.M., Bezodis N.E., Mcrobert A.P., North J.S., The impact of contextual information and a secondary task on anticipation performance: An interpretation using cognitive load theory, Applied Cognitive Psychology, 32, 2, pp. 141-149, (2018); Tassinari H., Hudson T.E., Landy M.S., Combining priors and noisy visual cues in a rapid pointing task, Journal of Neuroscience, 26, 40, pp. 10154-10163, (2006); Triolet C., Benguigui N., Le Runigo C., Williams A.M., Quantifying the nature of anticipation in professional tennis, Journal of Sports Sciences, 31, 8, pp. 820-830, (2013); van der Kamp J., Rivas F., van Doorn H., Savelsbergh G.J.P., Ventral and dorsal system contributions to visual anticipation in fast ball sports, International Journal of Sport Psychology, 39, 2, pp. 100-130, (2008); Vilares I., Kording K.P., Bayesian models: The structure of the world, uncertainty, behavior, and the brain, Annals of the New York Academy of Sciences, 1224, 1, pp. 22-39, (2011); Ward P., Hodges N.J., Starkes J.L., Williams M.A., The road to excellence: Deliberate practice and the development of expertise, High Ability Studies, 18, 2, pp. 119-153, (2007); Wasserstein R.L., Schirm A.L., Lazar N.A., Moving to a world beyond “p < 0.05”, American Statistician, 73, sup1, pp. 1-19, (2019); Wilkinson M., Distinguishing between statistical significance and practical/clinical meaningfulness using statistical inference, Sports Medicine, 44, 3, pp. 295-301, (2014); Williams A., Davids K., Visual search strategy, selective attention, and expertise in soccer, Research Quarterly for Exercise and Sport, 69, 2, pp. 111-128, (1998); Williams A.M., Perceptual skill in soccer: Implications for talent identification and development, Journal of Sports Sciences, 18, 9, pp. 737-750, (2000); Williams A.M., Jackson R.C., Psychology of sport & exercise anticipation in sport : Fifty years on, what have we learned and what research still needs to be undertaken?, Psychology of Sport and Exercise, August, (2019); Winter E.M., Abt G.A., Nevill A.M., Metrics of meaningfulness as opposed to sleights of significance, Journal of Sports Sciences, 32, 10, pp. 901-902, (2014); Wright M.J., Bishop D.T., Jackson R.C., Abernethy B., Brain regions concerned with the identification of deceptive soccer moves by higher-skilled and lower-skilled players, Frontiers in Human Neuroscience, 7, December, pp. 1-15, (2013)","D.P. Broadbent; Division of Sport, Health and Exercise Sciences, Department of Life Sciences, Brunel University London, London, United Kingdom; email: david.broadbent@brunel.ac.uk","","Routledge","02640414","","JSSCE","33320053","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85097565762" "Dix C.; Arundale A.; Silvers-Granelli H.; Marmon A.; Zarzycki R.; Snyder-Mackler L.","Dix, Celeste (57203785542); Arundale, Amelia (56529660500); Silvers-Granelli, Holly (56940696700); Marmon, Adam (24830668700); Zarzycki, Ryan (57192270904); Snyder-Mackler, Lynn (7006751957)","57203785542; 56529660500; 56940696700; 24830668700; 57192270904; 7006751957","Biomechanical changes during a 90º cut in collegiate female soccer players with participation in the 11+","2021","International Journal of Sports Physical Therapy","16","3","","671","680","9","12","10.26603/001c.22146","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118594024&doi=10.26603%2f001c.22146&partnerID=40&md5=29a425b223d84b78623f51565c58465e","Biomechanics and Movement Science, University of Delaware, Celeste Dix 540 S. College Ave, Suite 210Z, Newark, 19713, DE, United States; Biomechanics and Movement Science, University of Delaware; Department of Rehabilitation and Human Performance, Icahn School of Medicine at Mount Sinai Health System, United States; Biomechanics and Movement Science, University of Delaware; Director of Research Major League Soccer Medical Assessment Research Committee, Velocity Physical Therapy, United States; DJO Recovery Sciences, United States; Biomechanics and Movement Science, University of Delaware; Physical Therapy, Arcadia University, United States; Biomechanics and Movement Science, University of Delaware; Physical Therapy, University of Delaware, United States","Dix C., Biomechanics and Movement Science, University of Delaware, Celeste Dix 540 S. College Ave, Suite 210Z, Newark, 19713, DE, United States; Arundale A., Biomechanics and Movement Science, University of Delaware; Department of Rehabilitation and Human Performance, Icahn School of Medicine at Mount Sinai Health System, United States; Silvers-Granelli H., Biomechanics and Movement Science, University of Delaware; Director of Research Major League Soccer Medical Assessment Research Committee, Velocity Physical Therapy, United States; Marmon A., DJO Recovery Sciences, United States; Zarzycki R., Biomechanics and Movement Science, University of Delaware; Physical Therapy, Arcadia University, United States; Snyder-Mackler L., Biomechanics and Movement Science, University of Delaware; Physical Therapy, University of Delaware, United States","Background Valgus collapse and high knee abduction moments have been identified as biomechanical risk factors for ACL injury. It is unknown if participation in the 11+, a previously established, dynamic warm-up that emphasizes biomechanical technique and reduces ACL injury rates, reduces components of valgus collapse during a 90º cut. Hypothesis/Purpose To determine whether participation in the 11+ during a single soccer season reduced peak knee abduction moment and components of valgus collapse during a 90º cut in collegiate female soccer players. Study Design Prospective cohort study Methods Forty-six participants completed preseason and postseason motion analysis of a 90º cut. During the season, 31 players completed the 11+ and 15 players completed their typical warm-up (control group). Peak knee abduction moment, components of valgus collapse (hip adduction, internal rotation, and knee abduction angles), and a novel measure of knee valgus collapse were analyzed with repeated-measures ANOVAs to determine differences between preseason and postseason. Smallest detectable change (SDC) and minimal important difference (MID) values were applied to contextualize results. Results There was a significant main effect of time for non-dominant knee valgus collapse (p=0.03), but decreases in non-dominant knee valgus collapse only exceeded the SDC in the intervention team. Conclusions Clinically meaningful decreases in knee valgus collapse may indicate a beneficial biomechanical effect of the 11+. Participation in the 11+ may lower ACL injury risk by reducing valgus collapse during a 90º cut. Thank you to the University of Delaware, Temple University, and Wilmington University women’s soccer teams, coaches, and athletic training staff for their participation in this study. Thank you to Kelsey O’Donnell and Elise Krause for their assistance in data processing. © 2021, North American Sports Medicine Institute. All rights reserved.","Injury; Knee; Training","","Women’s Football Survey, (2014); Irick E., NCAA® Sports Sponsorship and Participation Rates Report, (2016); Agel J, Arendt EA, Bershadsky B., Anterior cruciate ligament injury in National Collegiate Athletic Association basketball and soccer: A 13-year review, Am J Sports Med, 33, 4, pp. 524-530, (2005); Prodromos CC, Han Y, Rogowski J, Joyce B, Shi K., A Meta-analysis of the incidence of anterior cruciate ligament tears as a function of gender, sport, and a knee injury-reduction regimen, Arthroscopy, 23, 12, pp. 1320-1325, (2007); Agel J, Rockwood T, Klossner D., Collegiate ACL injury rates across 15 sports: National Collegiate Athletic Association injury surveillance system data update (2004-2005 Through 2012-2013), Clin J Sport Med, 26, 6, pp. 518-523, (2016); Boden BP, Dean GS, Feagin JA, Garrett WE, Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Griffin LY, Albohm MJ, Arendt EA, Et al., Understanding and preventing noncontact anterior cruciate ligament injuries: A review of the Hunt Valley II Meeting, January 2005, Am J Sports Med, 34, 9, pp. 1512-1532, (2006); Alentorn-Geli E, Myer GD, Silvers HJ, Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players. 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Silvers-Granelli H, Mandelbaum B, Adeniji O, Et al., Efficacy of the FIFA 11+ injury prevention program in the collegiate male soccer player, Am J Sports Med, 43, 11, pp. 2628-2637, (2015); Soligard T, Myklebust G, Steffen K, Et al., Comprehensive warm-up programme to prevent injuries in young female footballers: Cluster randomised controlled trial, BMJ, 338, 7686, pp. 95-99, (2009); Arundale AJH, Silvers-Granelli HJ, Marmon A, Zarzycki R, Dix C, Snyder-Mackler L., Changes in biomechanical knee injury risk factors across two collegiate soccer seasons using the 11+ prevention program, Scand J Med Sci Sports, pp. 1-12, (2018); Thompson JA, Tran AA, Gatewood CT, Et al., Biomechanical effects of an injury prevention program in preadolescent female soccer athletes, Am J Sports Med, 45, 2, pp. 294-301, (2017); Krosshaug T, Steffen K, Kristianslund E, Et al., The vertical drop jump is a poor screening test for ACL injuries in female elite soccer and handball players, Am J Sports Med, 44, 4, pp. 874-883, (2015); Brophy RH, Stepan JG, Silvers HJ, Mandelbaum BR., Defending puts the anterior cruciate ligament at risk during soccer: A gender-based analysis, Sports Health, 7, 3, pp. 244-249, (2015); Faude O, Junge A, Kindermann W, Dvorak J., Injuries in female soccer players: A prospective study in the German national league, Am J Sports Med, 33, 11, pp. 1694-1700, (2005); Stearns KM, Pollard CD., Abnormal frontal plane knee mechanics during sidestep cutting in female soccer athletes after anterior cruciate ligament reconstruction and return to sport, Am J Sports Med, 41, 4, pp. 918-923, (2013); Hewett TE, Myer GD, Ford KR, Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Dos T, Christopher S, Comfort P, Jones PA., The effect of angle and velocity on change of direction biomechanics: An angle - velocity trade - off, Sport Med, 48, 10, pp. 2241-2259, (2018); (2011); Dix C, Arundale A, Silvers-Granelli HJ, Marmon A, Zarzycki R, Snyder-Mackler L., Biomechanical measures during two sport-specific tasks differentiate between soccer players who go on to anterior cruciate ligament injury and those who do not: A prospective cohort analysis, Int J Sports Phys Ther, 15, 6, pp. 928-935, (2020); Roewer BD, Ford KR, Myer GD, Hewett TE., The ‘impact’ of force filtering cut-off frequency on the peak knee abduction moment during landing: Artefact or ‘artifiction’?, Br J Sports Med, 48, 6, pp. 464-468, (2014); Brown SR, Wang H, Dickin DC, Weiss KJ., The relationship between leg preference and knee mechanics during sidestepping in collegiate female footballers, Sport Biomech, 13, 4, pp. 351-361, (2014); Bloomfield J, Polman R, O'Donoghue P., Physical demands of different positions in FA Premier League soccer, J Sport Sci Med, 6, 1, pp. 63-70, (2007); Dempsey AR, Lloyd DG, Elliott BC, Steele JR, Munro BJ., Changing sidestep cutting technique reduces knee valgus loading, Am J Sports Med, 37, 11, pp. 2194-2200, (2009); 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Dix C, Logerstedt D, Arundale A, Snyder-Mackler L., Perceived barriers to implementation of injury prevention programs among collegiate women’s soccer coaches, J Sci Med Sport, (2020); Bizzini M, Dvorak J., FIFA 11+: An effective programme to prevent football injuries in various player groups worldwide - A narrative review, Br J Sports Med, 49, 9, pp. 577-579, (2015); Hagglund M, Atroshi I, Wagner P, Walden M., Superior compliance with a neuromuscular training programme is associated with fewer ACL injuries and fewer acute knee injuries in female adolescent football players: Secondary analysis of an RCT, Br J Sports Med, 47, 15, pp. 986-991, (2013); Besier TF, Lloyd DG, Ackland TR, Cochrane JL., Anticipatory effects on knee joint loading during running and cutting maneuvers, Med Sci Sports Exerc, 33, 7, pp. 1176-1181, (2001); Myer GD, Sugimoto D, Thomas S, Hewett TE., The influence of age on the effectiveness of neuromuscular training to reduce anterior cruciate ligament injury in female athletes: A meta-analysis, Am J Sports Med, 41, 1, pp. 203-215, (2013); Thompson-Kolesar JA, Gatewood CT, Tran AA, Et al., Age influences biomechanical changes after participation in an anterior cruciate ligament injury prevention program, Am J Sports Med, 46, 3, pp. 598-606, (2018); Webster KE, Hewett T., Meta-analysis of meta- analyses of anterior cruciate ligament injury reduction training programs.pdf, J Orthop Res, (2018)","C. Dix; Biomechanics and Movement Science, University of Delaware, Newark, Celeste Dix 540 S. College Ave, Suite 210Z, 19713, United States; email: cdix@udel.edu","","North American Sports Medicine Institute","21592896","","","","English","Int. J. Sport. Phys. Ther.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85118594024" "Hughes J.M.; Dickin D.C.; Wang H.","Hughes, Julie M. (55449751700); Dickin, D. Clark (15050333900); Wang, He (34877807100)","55449751700; 15050333900; 34877807100","The relationships between multiaxial loading history and tibial strains during load carriage","2019","Journal of Science and Medicine in Sport","22","1","","48","53","5","12","10.1016/j.jsams.2018.05.026","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048571723&doi=10.1016%2fj.jsams.2018.05.026&partnerID=40&md5=32d340d82d94ac08fae859c971f14fce","Military Performance Division, U.S. Army Research Institute of Environmental Medicine, United States; School of Kinesiology, Ball State University, United States","Hughes J.M., Military Performance Division, U.S. Army Research Institute of Environmental Medicine, United States; Dickin D.C., School of Kinesiology, Ball State University, United States; Wang H., School of Kinesiology, Ball State University, United States","Objectives: To determine if a history of exercise involving multiaxial loading, through soccer participation, influences tibial stains during incremented load carriage. Design: Cross-sectional study. Methods: 20 female soccer players (20 ± 1 yr) and 20 mass- and height-matched healthy women (21 ± 1 yr) participated in walking tasks with 0 kg, 10 kg, 20 kg, and 30 kg loads on a force instrumented treadmill at 1.67 m/s. Subject-specific tibial CT models were combined with subject-specific musculoskeletal models for forward-dynamic simulations and finite element analyses. Strains from the middle third of the tibial shaft were analyzed. A mixed model repeated measures analysis of variance (ANOVA) and one-way ANOVAs were run with a Bonferroni correction setting significance at 0.0009. Results: Significant differences in tibial characteristics were found among loading conditions and between groups (all p < 0.0001). Tensile strains were 19.6%, 22.2%, 44.1%, and 20.7% lower in soccer players at 0 kg, 10 kg, 20 kg, and 30 kg of load carriage, respectively. Strain rates were 20.4%, 29.9%, 43.4%, and 18.9% lower, respectively, in soccer players. Lower compressive and shear strain magnitudes and rates were also observed in soccer players, with the only exception at the 30 kg loading condition in which controls had 2.4% lower strain magnitudes in compression, on average, compared to soccer players. Conclusions: A history of activity involving multiaxial loading was associated with generally lower estimated tibial strains during load carriage. Lower strain levels during repetitive physical activity may be protective from stress fracture. These findings suggest that physical training, such as participating in soccer, may be effective for preconditioning prior to entering military or endurance training. © 2018 Sports Medicine Australia","Finite element analysis; Gait mechanics; Stress fracture; Tibial strain magnitude; Tibial strain rates","Athletic Injuries; Biomechanical Phenomena; Cross-Sectional Studies; Female; Finite Element Analysis; Fractures, Stress; Humans; Soccer; Tibia; Walking; Weight-Bearing; Young Adult; adult; Article; body height; body mass; bone stress; female; finite element analysis; human; human experiment; soccer player; tibial shaft; treadmill test; walk test; weight bearing; young adult; biomechanics; cross-sectional study; injuries; pathophysiology; soccer; sport injury; stress fracture; tibia; walking; weight bearing","Cowan D., Jones B., Shaffer R., Musculoskeletal injuries in the military training environment, Military preventative medicine: mobilization and deployment, (2003); Bennell K., Matheson G., Meeuwisse W., Et al., Risk factors for stress fractures, Bone, 27, pp. 43-44, (2000); 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Finestone A., Milgrom C., Wolf O., Et al., Epidemiology of metatarsal stress fractures versus tibial and femoral stress fractures during elite training, Foot Ankle Int, 32, 1, pp. 16-20, (2011); Tenforde A.S., Kraus E., Fredericson M., Bone stress injuries in runners, Phys Med Rehabil Clin N Am, 27, 1, pp. 139-149, (2016); Burr D.B., Milgrom C., Fyhrie D., Et al., In vivo measurement of human tibial strains during vigorous activity, Bone, 18, 5, pp. 405-410, (1996); Al Nazer R., Rantalainen T., Heinonen A., Et al., Flexible multibody simulation approach in the analysis of tibial strain during walking, J Biomech, 41, 5, pp. 1036-1043, (2008); Xu C., Silder A., Zhang J., Et al., An integrated musculoskeletal-finite-element model to evaluate effects of load carriage on the tibia during walking, J Biomech Eng, 138, 10, (2016); Wang H., Kia M., Dickin D.C., Influences of load carriage and physical activity history on tibia bone strain, J Sport Health Sci, (2016); ACSM's guidelines for exercise testing and prescription, (2014); Sharp M.A., Physical fitness and occupational performance of women in the U.S. Army, Work, 4, 2, pp. 80-92, (1994); Harman E., Han K., Frykman P., Et al., The effects of backpack weight on the biomechanics of load carriage, (2000); Speirs A.D., Heller M.O., Duda G.N., Et al., Physiologically based boundary conditions in finite element modelling, J Biomech, 40, 10, pp. 2318-2323, (2007); Guess T.M., Stylianou A.P., Kia M., Concurrent prediction of muscle and tibiofemoral contact forces during treadmill gait, J Biomech Eng, 136, 2, (2014); Kia M., Stylianou A.P., Guess T.M., Evaluation of a musculoskeletal model with prosthetic knee through six experimental gait trials, Med Eng Phys, 36, 3, pp. 335-344, (2014); Krupenevich R., Rider P., Domire Z., Et al., Males and females respond similarly to walking with a standardized, heavy load, Mil Med, 180, 9, pp. 994-1000, (2015); Gabbett T.J., Hulin B.T., Blanch P., Et al., High training workloads alone do not cause sports injuries: how you get there is the real issue, Br J Sports Med, 50, 8, pp. 444-445, (2016); Wang H., Frame J., Ozimek E., Et al., Influence of fatigue and load carriage on mechanical loading during walking, Mil Med, 177, 2, pp. 152-156, (2012); Dames K.D., Smith J.D., Effects of load carriage and footwear on lower extremity kinetics and kinematics during overground walking, Gait Posture, 50, pp. 207-211, (2016); Tenforde A.S., Fredericson M., Sayres L.C., Et al., Identifying sex-specific risk factors for low bone mineral density in adolescent runners, Am J Sports Med, 43, 6, pp. 1494-1504, (2015); Nikander R., Kannus P., Rantalainen T., Et al., Cross-sectional geometry of weight-bearing tibia in female athletes subjected to different exercise loadings, Osteoporos Int, 21, 10, pp. 1687-1694, (2010); Al Nazer R., Lanovaz J., Kawalilak C., Et al., Direct in vivo strain measurements in human bone-a systematic literature review, J Biomech, 45, 1, pp. 27-40, (2012); Bulathsinhala L., Hughes J.M., McKinnon C.J., Et al., Risk of stress fracture varies by race/ethnic origin in a cohort study of 1.3 million US Army Soldiers, J Bone Miner Res, 32, 7, pp. 1546-1553, (2017); Popp K.L., Hughes J.M., Martinez-Betancourt A., Et al., Bone mass, microarchitecture and strength are influenced by race/ethnicity in young adult men and women, Bone, 103, pp. 200-208, (2017)","H. Wang; School of Kinesiology, Ball State University, United States; email: hwang2@bsu.edu","","Elsevier Ltd","14402440","","JSMSF","29884594","English","J. Sci. Med. Sport","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85048571723" "Ferri-Caruana A.; Prades-Insa B.; Serra-AÑÓ P.","Ferri-Caruana, Ana (57205125740); Prades-Insa, Beatriz (57219150403); Serra-AÑÓ, Pilar (24401919500)","57205125740; 57219150403; 24401919500","Effects of pelvic and core strength training on biomechanical risk factors for anterior cruciate ligament injuries","2020","Journal of Sports Medicine and Physical Fitness","60","8","","1128","1136","8","12","10.23736/S0022-4707.20.10552-8","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091411843&doi=10.23736%2fS0022-4707.20.10552-8&partnerID=40&md5=82039bb84d23a7fdb1f6bf37c51ac3b0","Department of Physical Education and Sport, Faculty of Science of Physical Activity and Sport, University of Valencia, Valencia, Spain; UBIC Research Group, Department of Physiotherapy, Faculty of Physiotherapy, University of Valencia, Valencia, Spain","Ferri-Caruana A., Department of Physical Education and Sport, Faculty of Science of Physical Activity and Sport, University of Valencia, Valencia, Spain; Prades-Insa B., Department of Physical Education and Sport, Faculty of Science of Physical Activity and Sport, University of Valencia, Valencia, Spain; Serra-AÑÓ P., UBIC Research Group, Department of Physiotherapy, Faculty of Physiotherapy, University of Valencia, Valencia, Spain","Little is known about the changes in biomechanical risk factors for an anterior cruciate ligament (ACL) injury after participation in a pelvic and core strength training (PCST) program in female team players. METHODS: This is a randomized controlled trial for which a total of 29 female soccer players were recruited from a soccer club and split into two groups, namely, experimental group (EG, N.=18; mean [SD] age, 17.8 [2.0 years], weight 64.0 [6.6] kg and height 1.7 [0.0] m) and control group (control, N.=11; mean [SD] age, 16.2 [1.2] years, weight 61.6 [7.3] kg and height 1.7 [0.0] m). The EG participated in an in-season 8-week PCST program (twice/week). Participants in the CG performed their normal training without additional pelvic and core strengthening. Pre- A nd postintervention knee frontal plane projection angle (FPPA), hip, knee and ankle peak flexion angles and jump height were collected during bilateral and unilateral drop jumps. RESULTS: PCST significantly reduced FPPA at dynamic landing, in both dominant (-7.1°) and non-dominant lower extremities (-8°). Further, this training significantly increased the peak hip (24.4°) and knee flexion angles (14.94°), but not the peak ankle dorsiflexion angle (P>0.05) which, significantly decreased in the CG (-3.5°). Following the intervention, EG significantly increased measures obtained for both bilateral (2.84 cm) and unilateral jumps (1.33 cm for the dominant leg and 1.22 cm for the non-dominant leg) (P<0.05), not so for CG (P<0.05). CONCLUSIONS: PCST resulted in improvements on ACL injury risk factors and vertical drop jump performance, suggesting that strengthening this body part warrants not only injury prevention, but increases jumping performance. © 2020 Edizioni Minerva Medica. All rights reserved.","","Adolescent; Ankle; Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Female; Hip; Humans; Infant; Knee; Muscle Strength; Pelvis; Resistance Training; Risk Factors; Soccer; adolescent; ankle; anterior cruciate ligament injury; biomechanics; controlled study; female; hip; human; infant; injury; knee; muscle strength; pelvis; physiology; procedures; randomized controlled trial; resistance training; risk factor; soccer","2len T, Chamari K, Castagna C, Wislï¿1/2ff U. Physiology of soccer: An update, Sports Med, 35, (2005); Ekstrand J, Hï¿1/2gglund M, Waldï¿1/2n M. Injury incidence and injury patterns in professional football: The UEFAinjury study, Br J Sports Med, 45, (2011); lana Belloch S, Pï¿1/2rez Soriano P, Lledï¿1/2 Figueres E. La epidemiologia en el fï¿1/2tbol: Una revisiï¿1/2n sistemï¿1/2tica, Rev Int Med Cienc Act Fï¿1/2sica Deporte, 10, (2010); Stubbe JH, van Beijsterveldt AM, van der Knaap S, Stege J, Verhagen EA, van Mechelen W, Et al., Injuries in professional male soccer players in the Netherlands: A prospective cohort study, J Athl Train, 50, (2015); Bjordal JM, Arn?y F, Hannestad B, Strand T., Epidemiology of anterior cruciate ligament injuries in soccer, Am J Sports Med, 25, (1997); Wulff Jakobsen B., Mechanism of anterior cruciate ligament injuries in soccer, Int J Sports Med, 27, (2006); Brophy RH, Schmitz L, Wright RW, Dunn WR, Parker RD, Andrish JT, Et al., Return to play and future ACLinjury risk after ACLreconstruction in soccer athletes from the Multicenter Orthopaedic Outcomes Network (MOON) group, Am J Sports Med, 40, (2012); Agel J, Arendt EA, Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A 13-year review, Am J Sports Med, 33, (2005); Mihata LC, Beutler AI, Boden BP., Comparing the incidence of anterior cruciate ligament injury in collegiate lacrosse, soccer, and basketball players: Implications for anterior cruciate ligament mechanism and prevention, Am J Sports Med, 34, (2006); Hewett TE, Myer GD, Ford KR., Anterior cruciate ligament injuries in female athletes: Part 1, mechanisms and risk factors, Am J Sports Med, 34, (2006); Lephart SM, Abt JP, Ferris CM, Sell TC, Nagai T, Myers JB, Et al., Neuromuscular and biomechanical characteristic changes in high school athletes: A plyometric versus basic resistance program, Br J Sports Med, 39, (2005); Pollard CD, Sigward SM, Ota S, Langford K, Powers CM., The influence of in-season injury prevention training on lower-extremity kinematics during landing in female soccer players, Clin J Sport Med, 16, (2006); Chappell JD, Limpisvasti O., Effect of a neuromuscular training program on the kinetics and kinematics of jumping tasks, Am J Sports Med, 36, (2008); Hewett TE, Ford KR, Hoogenboom BJ, Myer GD., Understanding and preventing acl injuries: Current biomechanical and epidemiologic considerations-update 2010, N Am J Sports Phys Ther, 5, (2010); Sigward SM, Pollard CD, Powers CM., The influence of sex and maturation on landing biomechanics: Implications for anterior cruciate ligament injury, Scand J Med Sci Sports, 22, (2012); Powers CM., The influence of abnormal hip mechanics on knee injury: A biomechanical perspective, J Orthop Sports Phys Ther, 40, (2010); Ayala F, De Ste Croix M, Sainz de Baranda P, Santonja F., Inter-session reliability and sex-related differences in hamstrings total reaction time, pre-motor time and motor time during eccentric isokinetic contractions in recreational athlete, J Electromyogr Kinesiol, 24, (2014); Brent JL, Myer GD, Ford KR, Paterno MV, Hewett TE., The effect of sex and age on isokinetic hip-abduction torques, J Sport Rehabil, 22, (2013); Paz GA, Maia MF, Farias D, Santana H, Miranda H, Lima V, Et al., Kinematic analysis of knee valgus during drop vertical jump and forward step-up in young basketball players, Int J Sports Phys Ther, 11, (2016); Markolf KL, Willems MJ, Jackson SR, Finerman GA., In situ calibration of miniature sensors implanted into the anterior cruciate ligament part I: Strain measurements, J Orthop Res, 16, (1998); 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Sports Med. Phys. Fitness","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85091411843" "Dupré T.; Tryba J.; Potthast W.","Dupré, Thomas (57194794521); Tryba, Julian (57221351184); Potthast, Wolfgang (23035844800)","57194794521; 57221351184; 23035844800","Muscle activity of cutting manoeuvres and soccer inside passing suggests an increased groin injury risk during these movements","2021","Scientific Reports","11","1","7223","","","","14","10.1038/s41598-021-86666-5","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85103745688&doi=10.1038%2fs41598-021-86666-5&partnerID=40&md5=dc01cb9514d4f5f2ff2f3c121958eb27","Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, 50933, Germany","Dupré T., Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, 50933, Germany; Tryba J., Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, 50933, Germany; Potthast W., Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, 50933, Germany","Cutting manoeuvres and inside passing are thought to increase the risk of sustaining groin injuries. But both movements have received little research attention in this regard. The purpose of this study was to investigate the muscle activity of adductor longus and gracilis as well as hip and knee joint kinematics during 90 ∘-cutting and inside passing. Thirteen male soccer players were investigated with 3D-motion capturing and surface electromyography of adductor longus and gracilis while performing the two movements. Hip and knee joint kinematics were calculated with AnyBody Modelling System. Muscle activity of both muscles was significantly higher during the cutting manoeuvre compared to inside passing. Kinematics showed that the highest activity occurred during phases of fast muscle lengthening and eccentric contraction of the adductors which is known to increase the groin injury risk. Of both movements, cutting showed the higher activity and is therefore more likely to cause groin injuries. However, passing might also increase the risk for groin injuries as it is one of the most performed actions in soccer, and therefore most likely causes groin injuries through overuse. Practitioners need to be aware of these risks and should prepare players accordingly through strength and flexibility training. © 2021, The Author(s).","","Adolescent; Adult; Biomechanical Phenomena; Groin; Humans; Male; Muscle Strength; Muscle, Skeletal; Risk Factors; Soccer; Thigh; adolescent; adult; biomechanics; clinical trial; human; inguinal region; injury; male; muscle strength; pathophysiology; risk factor; skeletal muscle; soccer; thigh","Hagglund M., Walden M., Ekstrand J., Risk factors for lower extremity muscle injury in professional soccer: the UEFA injury study, Am. J. Sports Med., 41, pp. 327-335, (2013); Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: the UEFA injury study, Br. J. Sports Med., 45, pp. 553-558, (2011); Lewin G., The incidence of injury in an English professional soccer club during one competitive season, Physiotherapy, 75, pp. 601-605, (1989); Walden M., Hagglund M., Ekstrand J., The epidemiology of groin injury in senior football: a systematic review of prospective studies, Br. J. Sports Med., 49, pp. 792-797, (2015); Arnason A., Et al., Risk factors for injuries in football, Am. J. Sports Med., 32, pp. 5S-16S, (2004); Werner J., Hagglund M., Walden M., Ekstrand J., UEFA injury study: a prospective study of hip and groin injuries in professional football over seven consecutive seasons, Br. J. Sports Med., 43, pp. 1036-1040, (2009); Haroy J., Et al., Groin problems in male soccer players are more common than previously reported, Am. J. Sports Med., 45, pp. 1304-1308, (2017); Serner A., Mosler A.B., Tol J.L., Bahr R., Weir A., Mechanisms of acute adductor longus injuries in male football players: a systematic visual video analysis, Br. J. Sports Med., 53, pp. 158-164, (2019); Maffey L., Emery C., What are the risk factors for groin strain injury in sport? A systematic review of the literature, Sports Med. (Auckland, N.Z.), 37, pp. 881-894, (2007); Ryan J., DeBurca N., McCreesh K., Risk factors for groin/hip injuries in field-based sports: a systematic review, Br. J. Sports Med., 48, pp. 1089-1096, (2014); Weir A., Et al., Doha agreement meeting on terminology and definitions in groin pain in athletes, Br. J. Sports Med., 49, pp. 768-774, (2015); Katis A., Kellis E., Three-dimensional kinematics and ground reaction forces during the instep and outstep soccer kicks in pubertal players, J. Sports Sci., 28, pp. 1233-1241, (2010); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med. Sci. Sports Exerc., 30, pp. 917-927, (1998); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med. Sci. Sports Exerc., 34, pp. 2028-2036, (2002); Charnock B.L., Lewis C.L., Garrett W.E., Queen R.M., Adductor longus mechanics during the maximal effort soccer kick, Sports Biomech., 8, pp. 223-234, (2009); Brophy R.H., Backus S.I., Pansy B.S., Lyman S., Williams R.J., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, J. Orthop. Sports Phys. Ther., 37, pp. 260-268, (2007); Rahnama N., Reilly T., Lees A., Injury risk associated with playing actions during competitive soccer, Br. J. Sports Med., 36, pp. 354-359, (2002); Watanabe K., Nunome H., Inoue K., Iga T., Akima H., Electromyographic analysis of hip adductor muscles in soccer instep and side-foot kicking, Sports Biomech., (2018); Dupre T., Et al., Does inside passing contribute to the high incidence of groin injuries in soccer? A biomechanical analysis, J. Sports Sci., 36, pp. 1827-1835, (2018); Chaudhari A.M.W., Jamison S.T., McNally M.P., Pan X., Schmitt L.C., Hip adductor activations during run-to-cut manoeuvres in compression shorts: implications for return to sport after groin injury, J. Sports Sci., 32, pp. 1333-1340, (2014); Hiti C.J., Stevens K.J., Jamati M.K., Garza D., Matheson G.O., Athletic osteitis pubis, Sports Med., 41, pp. 361-376, (2011); Edwards S., Brooke H.C., Cook J.L., Distinct cut task strategy in Australian football players with a history of groin pain, Phys. Ther. Sport, 23, pp. 58-66, (2017); Franklyn-Miller A., Et al., Athletic groin pain (part 2): a prospective cohort study on the biomechanical evaluation of change of direction identifies three clusters of movement patterns, Br. J. Sports Med., 51, pp. 460-468, (2017); Schache A.G., Kim H.-J., Morgan D.L., Pandy M.G., Hamstring muscle forces prior to and immediately following an acute sprinting-related muscle strain injury, Gait Posture, 32, pp. 136-140, (2010); Garrett W.E.J.R., Muscle strain injuries: clinical and basic aspects, Med. Sci. Sports Exerc., 22, pp. 436-443, (1990); David S., Komnik I., Peters M., Funken J., Potthast W., Identification and risk estimation of movement strategies during cutting maneuvers, J. Sci. Med. Sport, 20, pp. 1075-1080, (2017); David S., Mundt M., Komnik I., Potthast W., Understanding cutting maneuvers—the mechanical consequence of preparatory strategies and foot strike pattern, Hum. Mov. Sci., 62, pp. 202-210, (2018); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, J. Sports Sci., 24, pp. 11-22, (2006); Watanabe K., Katayama K., Ishida K., Akima H., Electromyographic analysis of hip adductor muscles during incremental fatiguing pedaling exercise, Eur. J. Appl. Physiol., 106, pp. 815-825, (2009); Hermens H.J., Et al., European Recommendations for Surface Electromyography, (1999); Lovell G.A., Blanch P.D., Barnes C.J., EMG of the hip adductor muscles in six clinical examination tests, Phys. Ther. Sport?, 13, pp. 134-140, (2012); Pollard C.D., Et al., A biomechanical comparison of dominant and non-dominant limbs during a side-step cutting task, Sports Biomech., 19, pp. 271-279, (2020); Dupre T., Dietzsch M., Komnik I., Potthast W., David S., Agreement of measured and calculated muscle activity during highly dynamic movements modelled with a spherical knee joint, J. Biomech., 84, pp. 73-80, (2019); Lund M.E., Andersen M.S., de Zee M., Rasmussen J., Scaling of musculoskeletal models from static and dynamic trials, Int. Biomech., 2, pp. 1-11, (2015); Winter E., Brookes F., Electromechanical response times and muscle elasticity in men and women, Eur. J. Appl. Physiol. Occup. Physiol., 63, pp. 124-128, (1991); Bensaida A., Shapiro–Wilk and Shapiro-Francia normality tests, MATLAB Central File Exchange, (2019); Durlak J.A., How to select, calculate, and interpret effect sizes, J. Pediatric Psychol., 34, pp. 917-928, (2009)","T. Dupré; Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, 50933, Germany; email: t.dupre@dshs-koeln.de","","Nature Research","20452322","","","33790373","English","Sci. Rep.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85103745688" "Abe S.; Narra N.; Nikander R.; Hyttinen J.; Kouhia R.; Sievänen H.","Abe, Shinya (56849819400); Narra, Nathaniel (23976753600); Nikander, Riku (8299715300); Hyttinen, Jari (35515938800); Kouhia, Reijo (55983369800); Sievänen, Harri (7005525254)","56849819400; 23976753600; 8299715300; 35515938800; 55983369800; 7005525254","Impact loading history modulates hip fracture load and location: A finite element simulation study of the proximal femur in female athletes","2018","Journal of Biomechanics","76","","","136","143","7","13","10.1016/j.jbiomech.2018.05.037","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048550485&doi=10.1016%2fj.jbiomech.2018.05.037&partnerID=40&md5=4315b54586f853bf9f17bd011334d5ae","Laboratory of Civil Engineering, Tampere University of Technology, Tampere, Finland; BioMediTech Institute and Faculty of Biomedical Sciences and Engineering, Tampere University of Technology, Tampere, Finland; Gerontology Research Center, Faculty of Sports Sciences, University of Jyväskylä, Jyväskylä, Finland; Central Hospital of Central Finland, Jyväskylä, Finland; GeroCenter Foundation for Aging Research and Development, Jyväskylä, Finland; The UKK Institute for Health Promotion Research, Tampere, Finland","Abe S., Laboratory of Civil Engineering, Tampere University of Technology, Tampere, Finland; Narra N., BioMediTech Institute and Faculty of Biomedical Sciences and Engineering, Tampere University of Technology, Tampere, Finland; Nikander R., Gerontology Research Center, Faculty of Sports Sciences, University of Jyväskylä, Jyväskylä, Finland, Central Hospital of Central Finland, Jyväskylä, Finland, GeroCenter Foundation for Aging Research and Development, Jyväskylä, Finland; Hyttinen J., BioMediTech Institute and Faculty of Biomedical Sciences and Engineering, Tampere University of Technology, Tampere, Finland; Kouhia R., Laboratory of Civil Engineering, Tampere University of Technology, Tampere, Finland; Sievänen H., The UKK Institute for Health Promotion Research, Tampere, Finland","Sideways falls impose high stress on the thin superolateral cortical bone of the femoral neck, the region regarded as a fracture-prone region of the hip. Exercise training is a natural mode of mechanical loading to make bone more robust. Exercise-induced adaptation of cortical bone along the femoral neck has been previously demonstrated. However, it is unknown whether this adaption modulates hip fracture behavior. The purpose of this study was to investigate the influence of specific exercise loading history on fall-induced hip fracture behavior by estimating fracture load and location with proximal femur finite element (FE) models created from magnetic resonance images (MRI) of 111 women with distinct exercise histories: 91 athletes (aged 24.7 ± 6.1 years, >8 years competitive career) and 20 women as controls (aged 23.7 ± 3.8 years). The athletes were divided into five groups based on typical loading patterns of their sports: high-impact (H-I: 9 triple-jumpers and 10 high jumpers), odd-impact (O-I: 9 soccer and 10 squash players), high-magnitude (H-M: 17 power-lifters), repetitive-impact (R-I: 18 endurance runners), and repetitive non-impact (R-NI: 18 swimmers). Compared to the controls, the H-I, O-I, and R-I groups had significantly higher (11–26%, p < 0.05) fracture loads. Also, the fracture location in the H-I and O-I groups was significantly more proximal (7–10%) compared to the controls. These results suggest that an exercise loading history of high impacts, impacts from unusual directions, or repetitive impacts increases the fracture load and may lower the risk of fall-induced hip fracture. © 2018 Elsevier Ltd","Bone strength; Exercise; Falling; Femoral neck; Finite element modeling","Accidental Falls; Adult; Athletes; Biomechanical Phenomena; Female; Femur; Finite Element Analysis; Hip Fractures; Humans; Weight-Bearing; Young Adult; Bone; Fracture; Fracture mechanics; Location; Magnetic levitation vehicles; Magnetic resonance; Magnetic resonance imaging; Sports; Bone strength; Exercise; Falling; Femoral necks; Finite element simulations; Fracture location; Magnetic resonance images (MRI); Mechanical loading; adult; Article; athlete; bone strength; controlled study; exercise; falling; female; femoral neck; finite element analysis; hip fracture; human; major clinical study; nuclear magnetic resonance imaging; priority journal; runner; sport; swimming; biomechanics; femur; hip fracture; pathophysiology; weight bearing; young adult; Finite element method","Abe S., Narra N., Nikander R., Hyttinen J., Kouhia R., Sievanen H., Exercise loading history and femoral neck strength in a sideways fall: a three-dimensional finite element modeling study, Bone, 92, pp. 9-17, (2016); Ball K., Loading and performance of the support leg in kicking, J. 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Res., 22, pp. 537-543, (2007); Sievanen H., Karstila T., Apuli P., Kannus P., Magnetic resonance imaging of the femoral neck cortex, Acta Radiol., 48, pp. 308-314, (2007); Smith N., Dyson R., Janaway L., Ground reaction force measures when running in soccer boots and soccer training shoes on a natural turf surface, Sport. Eng., 7, pp. 159-167, (2004); Swinton P.A., Lloyd R., Keogh J.W., Agouris I., Stewart A.D., A biomechanical comparison of the traditional squat, powerlifting squat, and box squat, J. Strength Cond. Res., 26, pp. 1805-1816, (2012); Taddei F., Cristofolini L., Martelli S., Gill H.S., Viceconti M., Subject-specific finite element models of long bones: an in vitro evaluation of the overall accuracy, J. Biomech., 39, pp. 2457-2467, (2006); Taubin G., Curve and surface smoothing without shrinkage, Proc. IEEE Int. Conf. Comput. Vis., 852-857, (1995); Verhulp E., van Rietbergen B., Huiskes R., Load distribution in the healthy and osteoporotic human proximal femur during a fall to the side, Bone, 42, pp. 30-35, (2008); Yang Y., Mackey D.C., Liu-Ambrose T., Feldman F., Robinovitch S.N., Risk factors for hip impact during real-life falls captured on video in long-term care, Osteoporos. Int., 27, pp. 537-547, (2016)","S. Abe; Laboratory of Civil Engineering, Tampere University of Technology, Tampere, Tekniikankatu 12, FI-33720, Finland; email: shinya.abe@tut.fi","","Elsevier Ltd","00219290","","JBMCB","29921524","English","J. Biomech.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85048550485" "McMorris T.; Swain J.; Lauder M.; Smith N.; Kelly J.","McMorris, T. (56213620800); Swain, J. (7102441802); Lauder, M. (8695538800); Smith, N. (26427089000); Kelly, J. (55462329100)","56213620800; 7102441802; 8695538800; 26427089000; 55462329100","Warm-up prior to undertaking a dynamic psychomotor task: Does it aid performance?","2006","Journal of Sports Medicine and Physical Fitness","46","2","","328","334","6","12","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33746786470&partnerID=40&md5=5f07f319a5844c55a04252542203d224","Centre for Sports Science and Medicine, University College Chichester, Chichester, United Kingdom; Centre for Sports Science and Medicine, University College Chichester, Chichester, West Sussex PO19 6PE, College Lane, United Kingdom","McMorris T., Centre for Sports Science and Medicine, University College Chichester, Chichester, United Kingdom, Centre for Sports Science and Medicine, University College Chichester, Chichester, West Sussex PO19 6PE, College Lane, United Kingdom; Swain J., Centre for Sports Science and Medicine, University College Chichester, Chichester, United Kingdom; Lauder M., Centre for Sports Science and Medicine, University College Chichester, Chichester, United Kingdom; Smith N., Centre for Sports Science and Medicine, University College Chichester, Chichester, United Kingdom; Kelly J., Centre for Sports Science and Medicine, University College Chichester, Chichester, United Kingdom","Aim. The purpose of this study was to examine the effect of differing types of warm-up on the performance of a psychomotor skill that required quick reaction and movement times (MTs), and whole-body co-ordination. Methods. Subjects (n=12) carried out a psychomotor task which involved reacting to 1 of 3 lights, then running through a slalom course before kicking a mini-soccer ball at a target. The task was completed following rest, a physical warm-up, a skill-specific warm-up and a skill plus physical warm-up. In the physical, and skill plus physical warm-ups the subjects cycled on an ergometer at a workload calculated to induce exercise at their lactate threshold. The outcome dependent variables were time to initiate a movement (reaction time), time to complete the slalom run (MT) and two measures of passing accuracy (constant error and variable error. Biomechanical variables(knee, hip and ankle angles, and horizontal and vertical ankle velocities at contact(were also compared. Results. A repeated measures analysis of variance showed no significant effect of warm-up type on any of the dependent variables. Stepwise multiple regression analyses showed that changes in heart rate from resting values to those before performance of the skill test (Δ HR pre-performance) and those after performance of the test (Δ HR post-performance) combined were significant predictors of MT (R2=0.31, P<0.001), while Δ HR post-performance significantly predicted reaction time (R2=0.12, P<0.02). Conclusion. It was concluded that warm-up provided no significant benefit in performance for a task that was dynamic in nature but that physical arousal probably aids reaction and MTs.","Activity-set; Arousal; Exercise; Motor control; Movement time; Reaction time","Adult; Anaerobic Threshold; Ankle Joint; Arousal; Biomechanics; Ergometry; Forecasting; Heart Rate; Hip Joint; Humans; Knee Joint; Male; Motor Activity; Psychomotor Performance; Reaction Time; Running; Soccer; Time Factors; adult; analysis of covariance; article; controlled study; exercise; human; male; motor control; psychomotor performance; reaction time","McMorris T., Acquisition and Performance of Sports Skills, (2004); Tipton C., Karpovich P., Exercise and the patellar reflex, J Appl Physiol, 21, pp. 15-18, (1966); Chmura J., Nazar K., Kaciuba-Ucilko H., Choice reaction time during graded exercise in relation to blood lactate and plasma catecholamines thresholds, Int J Sports Med, 15, pp. 172-176, (1994); Chmura J., Krysztofiak H., Ziemba A., Nazar K., Kaciuba-Ucilko H., Psychomotor performance during prolonged exercise above and below the blood lactate threshold, Eur J Appl Physiol, 77, pp. 77-80, (1998); McMorris T., Graydon J., The effect of incremental exercise on cognitive performance, Int J Sport Psychol, 31, pp. 66-81, (2000); Tomporowski P.D., Effects of acute bouts of exercise on cognition, Acta Psychol, 112, pp. 297-394, (2003); Stewart D., Macaluso A., De Vito G., The effect of an active warm-up on surface EMG and muscle performance in healthy humans, Eur J Appl Physiol, 89, pp. 509-513, (2003); Gray S., Nimmo M., Effects of active, passive and no warm-up on metabolism and performance during high-intensity exercise, J Sports Sci, 19, pp. 693-700, (2001); McMorris T., Sproule J., Draper S., Child R., Performance of a psychomotor skill following rest, exercise at the plasma epinephrine threshold and maximal intensity exercise, Percept Mot Skills, 91, pp. 553-562, (2000); McMorris T., Delves S., Sproule J., Lauder M., Hale B., Effect of incremental exercise on initiation and movement times in a choice-response, whole-body psychomotor task, Br J Sports Med, (2005); Nacson J., Schmidt R.A., The activity-set hypothesis for warm-up decrement, J Mot Behav, 3, pp. 1-15, (1971); Turvey M.T., Coordination, Am Psychol, 45, pp. 938-953, (1990); Beaver W.L., Wasserman K., Whipp B.J., Improved detection of lactate threshold during exercise using a log-log transformation, J Appl Physiol, 59, pp. 1936-1940, (1985); Astrand P.O., Rodahl K., Textbook of Work Physiology, (2002); McMorris T., Gibbs C., Palmer J., Payne J., Torpey S., Exercise and performance of a motor skill, Brit J Physical Ed S, 15, pp. 23-27, (1994); Scott A.J., Holt D., The effect of two-stage sampling on ordinary least squares methods, J Am Stat Assoc, 77, pp. 848-854, (1982); Donner A., Cunningham D.A., Regression analysis in physiological research: Some comments on the problem of repeated measurements, Med Sci Sports Exerc, 16, pp. 422-425, (1984); McMorris T., Myers S., MacGillivary W.W., Sexsmith J.R., Fallowfield J., Graydon J., Et al., Exercise, plasma catecholamine concentrations and decision-making performance of soccer players on a soccer-specific test, J Sports Sci, 17, pp. 667-676, (1999); McMorris T., Tallon M., Williams C., Sproule J., Draper S., Swain J., Et al., Incremental exercise, plasma concentrations of catecholamines, reaction time, and motor time during performance of a noncompatible choice response time task, Percept Mot Skills, 97, pp. 590-604, (2003); Podolin D.A., Munger P.A., Mazzeo R.S., Plasma catecholamine and lactate response during graded exercise with varied glycogen conditions, J Appl Physiol, 71, pp. 1427-1433, (1991); Kahneman D., Attention and Effort, (1973)","T. McMorris; Centre for Sports Science and Medicine, University College Chichester, Chichester, West Sussex PO19 6PE, College Lane, United Kingdom; email: T.McMorris@ucc.ac.uk","","","00224707","","JMPFA","16823366","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-33746786470" "Sankey S.P.; Robinson M.A.; Vanrenterghem J.","Sankey, Sean P. (55874115400); Robinson, Mark A. (24299659200); Vanrenterghem, Jos (6506257376)","55874115400; 24299659200; 6506257376","Whole-body dynamic stability in side cutting: Implications for markers of lower limb injury risk and change of direction performance","2020","Journal of Biomechanics","104","","109711","","","","15","10.1016/j.jbiomech.2020.109711","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85081218428&doi=10.1016%2fj.jbiomech.2020.109711&partnerID=40&md5=c65b768921d8e480d3a2aae2cf77d666","Research Institute for Sport and Exercise Sciences, Faculty of Science, Liverpool John Moores University, Liverpool, United Kingdom; School of Sport and Biological Sciences, University of Bolton, Bolton, United Kingdom; KU Leuven, Musculoskeletal Rehabilitation Research Group, Department of Rehabilitation Sciences and Physiotherapy, Faculty of Kinesiology and Rehabilitation Sciences, Belgium","Sankey S.P., Research Institute for Sport and Exercise Sciences, Faculty of Science, Liverpool John Moores University, Liverpool, United Kingdom, School of Sport and Biological Sciences, University of Bolton, Bolton, United Kingdom; Robinson M.A., Research Institute for Sport and Exercise Sciences, Faculty of Science, Liverpool John Moores University, Liverpool, United Kingdom; Vanrenterghem J., KU Leuven, Musculoskeletal Rehabilitation Research Group, Department of Rehabilitation Sciences and Physiotherapy, Faculty of Kinesiology and Rehabilitation Sciences, Belgium","Control of the centre of mass (CoM) whilst minimising the use of unnecessary movements is imperative for successful performance of dynamic sports tasks, and may indicate the condition of whole-body dynamic stability. The aims of this study were to express movement strategies that represent whole-body dynamic stability, and to explore their association with potentially injurious joint mechanics and side cutting performance. Twenty recreational soccer players completed 45° unanticipated side cutting. Five distinct whole-body dynamic stability movement strategies were identified, based on factors that influence the medial ground reaction force (GRF) vector during ground contact in the side cutting manoeuvre. Using Statistical Parametric Mapping, the movement strategies were linearly regressed against selected performance outcomes and peak knee abduction moment (peak KAM). Significant relationships were found between each movement strategy and at least one selected performance outcome or peak KAM. Our results suggest excessive medial GRFs were generated through sagittal plane movement strategies, and despite being beneficial for performance aspects, poor sagittal plane efficiency may destabilise control of the CoM. Frontal plane hip acceleration is the key non-sagittal plane movement strategy used in a corrective capacity to moderate excessive medial forces. However, whilst this movement strategy offered a way to retrieve control of the CoM, mitigating reduced whole-body dynamic stability, it also coincided with increased peak KAM. Overall, whole-body dynamic stability movement strategies helped explain the delicate interplay between the mechanics of changing direction and undesirable joint moments, providing insights that might support development of future intervention strategies. © 2020 Elsevier Ltd","Anterior cruciate ligament; Centre of mass; Dynamic stability; Sagittal plane efficiency; Side cutting","Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Humans; Knee; Knee Injuries; Knee Joint; Movement; Biophysics; Efficiency; Joints (anatomy); Sports; Stability; Anterior cruciate ligament; Centre of mass; Ground reaction forces; Intervention strategy; Performance aspects; Sagittal plane; Side-cutting; Statistical parametric mapping; adult; Article; biomechanics; clinical outcome; controlled study; disease marker; ground reaction force; human; human experiment; limb injury; male; medical parameters; movement perception; normal human; priority journal; process monitoring; risk factor; whole body dynamic stability; anterior cruciate ligament injury; knee; knee injury; movement (physiology); Dynamics","Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvres, Med. 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Sci., 33, pp. 312-320, (2014); Jones P.A., Herrington L.C., Graham-Smith P., Technique determinants of knee joint loads during cutting in female soccer players, Hum. Mov. Sci., 42, pp. 203-211, (2015); Kepple T.M., Siegel K.L., Stanhope S.J., Relative contributions of the lower extremity joint moments to forward progression and support during gait, Gait Post., 6, pp. 1-8, (1997); Kristianslund E., Faul O., Bahr R., Myklebust G., Krosshaug T., Sidestep cutting technique and knee abduction loading: implications for ACL prevention exercises, Br. J. Sports Med., 48, pp. 779-783, (2014); Kristianslund E., Krosshaug T., van den Bogert A.J., Effect of low pass filtering on joint moments from inverse dynamics: Implications for injury prevention, J. Biomech., 45, pp. 666-671, (2012); MacKinnon C.D., Winter D.A., Control of whole body balance in the frontal plane during human walking, J. 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Brain Res., 129, pp. 629-634, (1999); Sankey S.P., Raja Azidin R.M.F., Robinson M.A., Malfait B., Deschamps K., Verschueren S., Staes F., Vanrenterghem J., How reliable are knee kinematics and kinetics during side-cutting manoeuvres?, Gait Post., 41, pp. 905-911, (2015); Vanrenterghem J., Gormley D., Robinson M.A., Lees A., Solutions for representing the whole-body centre of mass in side cutting manoeuvres based on data that is typically available for lower limb kinematics, Gait Post., 31, pp. 517-521, (2010); Vanrenterghem J., Venables E., Pataky T., Robinson M.A., The effect of running speed on knee mechanical loading in females during side cutting, J. Biomech., 45, pp. 2444-2449, (2012); Winter D., Human balance and posture control during standing and walking, Gait Post., 3, pp. 193-214, (1995)","S.P. Sankey; School of Sport and Biological Sciences, University of Bolton, Bolton, United Kingdom; email: S.Sankey@bolton.ac.uk","","Elsevier Ltd","00219290","","JBMCB","32156443","English","J. Biomech.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85081218428" "Akbari H.; Sahebozamani M.; Daneshjoo A.; Amiri-Khorasani M.; Shimokochi Y.","Akbari, Hadi (57204285239); Sahebozamani, Mansour (37005126200); Daneshjoo, Ablolhamid (30267523100); Amiri-Khorasani, Mohammadtaghi (36090950300); Shimokochi, Yohei (12806432000)","57204285239; 37005126200; 30267523100; 36090950300; 12806432000","Effect of the FIFA 11+ on landing patterns and baseline movement errors in elite male youth soccer players","2020","Journal of Sport Rehabilitation","29","6","","730","737","7","13","10.1123/JSR.2018-0374","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85093079779&doi=10.1123%2fJSR.2018-0374&partnerID=40&md5=b21501863564eafd1b5f372734c430e7","Department of Sport Sciences, Faculty of Literature and Humanities, University of Zabol, Zabol, Iran; Department of Corrective Exercises and Sports Injuries, Faculty of Sport Science, Shahid Bahonar University of Kerman, Kerman, Iran; Department of Sport Biomechanics, Faculty of Sport Science, Shahid Bahonar University of Kerman, Kerman, Iran; Department of Health and Sport Management, School of Health and Sport Sciences, Osaka University of Health and Sport Sciences, Osaka, Japan","Akbari H., Department of Sport Sciences, Faculty of Literature and Humanities, University of Zabol, Zabol, Iran; Sahebozamani M., Department of Corrective Exercises and Sports Injuries, Faculty of Sport Science, Shahid Bahonar University of Kerman, Kerman, Iran; Daneshjoo A., Department of Corrective Exercises and Sports Injuries, Faculty of Sport Science, Shahid Bahonar University of Kerman, Kerman, Iran; Amiri-Khorasani M., Department of Sport Biomechanics, Faculty of Sport Science, Shahid Bahonar University of Kerman, Kerman, Iran; Shimokochi Y., Department of Health and Sport Management, School of Health and Sport Sciences, Osaka University of Health and Sport Sciences, Osaka, Japan","Context: There is no evidence regarding the effect of the FIFA 11+ on landing kinematics in male soccer players, and few studies exist regarding the evaluating progress of interventions based on the initial biomechanical profile. Objective: To investigate the effect of the FIFA 11+ program on landing patterns in soccer players classified as at low or high risk for noncontact anterior cruciate ligament injuries. Design: Randomized controlled trial. Setting: Field-based functional movement screening performed at the soccer field. Participants: A total of 24 elite male youth soccer players participated in this study. Intervention: The intervention group performed the FIFA 11+ program 3 times per week for 8 weeks, whereas the control group performed their regular warm-up program. Main Outcome Measures: Before and after the intervention, all participants were assessed for landing mechanics using the Landing Error Scoring System. Pretraining Landing Error Scoring System scores were used to determine risk groups. Results: The FIFA 11+ group had greater improvement than the control group in terms of improving the landing pattern; there was a significant intergroup difference (F1,20 = 28.86, P <.001, η2p =.591). Soccer players categorized as being at high risk displayed greater improvement from the FIFA 11+ program than those at low risk (P =.03). However, there was no significant difference in the proportion of risk category following the routine warm-up program (P = 1.000). Conclusions: The present study provides evidence of the usefulness of the FIFA 11+ program for reducing risk factors associated with noncontact anterior cruciate ligament injuries. The authors' results also suggest that soccer players with the higher risk profile would benefit more than those with lower risk profiles and that targeting them may improve the efficacy of the FIFA 11+ program. © 2020 Human Kinetics, Inc.","Anterior cruciate ligament injury; Landing biomechanics; Landing Error Scoring System; Risk profile; Warm-up program","Adolescent; Anterior Cruciate Ligament Injuries; Athletic Injuries; Exercise Therapy; Humans; Male; Movement; Soccer; Warm-Up Exercise; adolescent; anterior cruciate ligament injury; controlled study; human; kinesiotherapy; male; movement (physiology); physiology; procedures; randomized controlled trial; soccer; sport injury; warm up","Dai B, Mao D, Garrett WE, Yu B., Anterior cruciate ligament injuries in soccer: loading mechanisms, risk factors, and prevention programs, J Sport Health Sci, 3, 4, pp. 299-306, (2014); Alentorn-Geli E, Mendiguchia J, Samuelsson K, Et al., Prevention of non-contact anterior cruciate ligament injuries in sports. Part II: systematic review of the effectiveness of prevention programmes in male athletes, Knee Surg Sports Traumatol Arthrosc, 22, 1, pp. 16-25, (2014); Read P, Oliver JL, De Ste Croix MBA, Myer GD, Lloyd RS., Injury risk factors in male youth soccer players, Strength Cond J, 37, 5, pp. 1-7, (2015); DiStefano LJ, Padua DA, DiStefano MJ, Marshall SW., Influence of age, sex, technique, and exercise program on movement patterns after an anterior cruciate ligament injury prevention program in youth soccer players, Am J Sports Med, 37, 3, pp. 495-505, (2009); Hewett TE, Ford KR, Xu YY, Khoury J, Myer GD., Utilization of ACL injury biomechanical and neuromuscular risk profile analysis to determine the effectiveness of neuromuscular training, Am J Sports Med, 44, 12, pp. 3146-3151, (2016); Renstrom P, Ljungqvist A, Arendt E, Et al., Non-contact ACL injuries in female athletes: an International Olympic Committee current concepts statement, Br J Sports Med, 42, 6, pp. 394-412, (2008); Padua DA, Marshall SW, Boling MC, Thigpen CA, Garrett WE, Beutler AI., The Landing Error Scoring System (LESS) is a valid and reliable clinical assessment tool of jump-landing biomechanics: the JUMP-ACL study, Br J Sports Med, 37, 10, pp. 1996-2002, (2009); Padua DA, DiStefano LJ, Beutler AI, de la Motte SJ, DiStefano MJ, Marshall SW., The landing error scoring system as a screening tool for an anterior cruciate ligament injury-prevention program in elite-youth soccer athletes, J Athl Train, 50, 6, pp. 589-595, (2015); Herman DC, Onate JA, Weinhold PS, Et al., The effects of feedback with and without strength training on lower extremity biomechanics, Am J Sports Med, 37, 7, pp. 1301-1308, (2009); Myer GD, Ford KR, McLean SG, Hewett TE., The effects of plyometric versus dynamic stabilization and balance training on lower extremity biomechanics, Am J Sports Med, 34, 3, pp. 445-455, (2006); Onate JA, Guskiewicz KM, Marshall SW, Giuliani C, Yu B, Garrett WE., Instruction of jump-landing technique using videotape feedback: altering lower extremity motion patterns, Am J Sports Med, 33, 6, pp. 831-842, (2005); Ter Stege MH, Dallinga JM, Benjaminse A, Lemmink KA., Effect of interventions on potential, modifiable risk factors for knee injury in team ball sports: a systematic review, Sports Med, 44, 10, pp. 1403-1426, (2014); Sadoghi P, von Keudell A, Vavken P., Effectiveness of anterior cruciate ligament injury prevention training programs, J Bone Joint Surg, 94, 9, pp. 769-776, (2012); Silvers-Granelli HJ, Bizzini M, Arundale A, Mandelbaum BR, Snyder-Mackler L., Does the FIFA 11+ injury prevention program reduce the incidence of ACL injury in male soccer players?, Clin Orthop Relat Res, 475, 10, pp. 2447-2455, (2017); Myklebust G, Engebretsen L, Braekken IH, Skjolberg A, Olsen O-E, Bahr R., Prevention of anterior cruciate ligament injuries in female team handball players: a prospective intervention study over three seasons, Clin J Sport Med, 13, 2, pp. 71-78, (2003); Hewett TE, Lindenfeld TN, Riccobene JV, Noyes FR., The effect of neuromuscular training on the incidence of knee injury in female athletes, Am J Sports Med, 27, 6, pp. 699-706, (1999); Bizzini M, Junge A, Dvorak J., Implementation of the FIFA 11+ football warm up program: how to approach and convince the Football associations to invest in prevention, Br J Sports Med, 47, 12, pp. 803-806, (2013); Soligard T, Myklebust G, Steffen K, Et al., Comprehensive warm-up programme to prevent injuries in young female footballers: cluster randomised controlled trial, BMJ, 337, (2008); Silvers-Granelli H, Mandelbaum B, Adeniji O, Et al., Efficacy of the FIFA 11+ injury prevention program in the collegiate male soccer player, Am J Sports Med, 43, 11, pp. 2628-2637, (2015); Myer GD, Ford KR, Brent JL, Hewett TE., Differential neuromuscular training effects on ACL injury risk factors in “high-risk” versus “low-risk” athletes, BMC Musculoskelet Disord, 8, 1, (2007); Hewett TE, Ford KR, Xu YY, Khoury J, Myer GD., Effectiveness of neuromuscular training based on the neuromuscular risk profile, Am J Sports Med, 45, 9, pp. 2142-2147, (2017); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (1988); Dempsey AR, Lloyd DG, Elliott BC, Steele JR, Munro BJ., Changing sidestep cutting technique reduces knee valgus loading, Am J Sports Med, 37, 11, pp. 2194-2200, (2009); Donnelly CJ, Elliott BC, Doyle TL, Finch CF, Dempsey AR, Lloyd DG., Changes in knee joint biomechanics following balance and technique training and a season of Australian football, Br J Sports Med, 46, 13, pp. 917-922, (2012); Cochrane JL, Lloyd DG, Besier TF, Elliott BC, Doyle TL, Ackland TR., Training affects knee kinematics and kinetics in cutting maneuvers in sport, Med Sci Sports Exerc, 42, 8, pp. 1535-1544, (2010); Daneshjoo A, Mokhtar AH, Rahnama N, Yusof A., The effects of comprehensive warm-up programs on proprioception, static and dynamic balance on male soccer players, PloS ONE, 7, 12, (2012); Grooms DR, Palmer T, Onate JA, Myer GD, Grindstaff T., Soccer-specific warm-up and lower extremity injury rates in collegiate male soccer players, J Athl Train, 48, 6, pp. 782-789, (2013); Hammes D, Aus der Funten K, Kaiser S, Frisen E, Bizzini M, Meyer T., Injury prevention in male veteran football players-a randomised controlled trial using “FIFA 11+”, J Sports Sci, 33, 9, pp. 873-881, (2015); Thijs Y, Van Tiggelen D, Willems T, De Clercq D, Witvrouw E., Relationship between hip strength and frontal plane posture of the knee during a forward lunge, Br J Sports Med, 41, 11, pp. 723-727, (2007); Dallinga J, Benjaminse A, Gokeler A, Cortes N, Otten E, Lemmink K., Innovative video feedback on jump landing improves landing technique in males, Int J Sports Med, 38, pp. 150-158, (2017); Shimokochi Y, Shultz SJ., Mechanisms of noncontact anterior cruciate ligament injury, J Athl Train, 43, 4, pp. 396-408, (2008); Hewett TE, Stroupe AL, Nance TA, Noyes FR., Plyometric training in female athletes: decreased impact forces and increased hamstring torques, Am J Sports Med, 24, 6, pp. 765-773, (1996); van Mechelen W, Hlobil H, Kemper HC., Incidence, severity, aetiology and prevention of sports injuries, Sports Med, 14, 2, pp. 82-99, (1992); Bahr R, Krosshaug T., Understanding injury mechanisms: a key component of preventing injuries in sport, Br J Sports Med, 39, 6, pp. 324-329, (2005); Pappas E, Hagins M, Sheikhzadeh A, Nordin M, Rose D., Biomechanical differences between unilateral and bilateral landings from a jump: gender differences, Clin J Sport Med, 17, 4, pp. 263-268, (2007); Brito J, Figueiredo P, Fernandes L, Et al., Isokinetic strength effects of FIFA's “The 11+” injury prevention training programme, Isokinet Exerc Sci, 18, 4, pp. 211-215, (2010); Daneshjoo A, Mokhtar A, Rahnama N, Yusof A., The effects of injury prevention warm-up programmes on knee strength in male soccer players, Biol Sport, 30, 4, pp. 281-288, (2013); Mizner RL, Kawaguchi JK, Chmielewski TL., Muscle strength in the lower extremity does not predict postinstruction improvements in the landing patterns of female athletes, J Orthop Sports Phys Ther, 38, 6, pp. 353-361, (2008)","H. Akbari; Department of Sport Sciences, Faculty of Literature and Humanities, University of Zabol, Zabol, Iran; email: h.akbari@uoz.ac.ir","","Human Kinetics Publishers Inc.","10566716","","JSRHE","31629326","English","J. Sport Rehabil.","Article","Final","","Scopus","2-s2.0-85093079779" "Sannicandro I.; Rosa R.A.; De Pascalis S.; Piccinno A.","Sannicandro, I. (6507588903); Rosa, R.A. (56188607700); De Pascalis, S. (57118017000); Piccinno, A. (36925877900)","6507588903; 56188607700; 57118017000; 36925877900","The determination of functional asymmetries in the lower limbs of young soccer players using the countermovement jump. The lower limbs asymmetry of young soccer players","2012","Science and Sports","27","6","","375","377","2","12","10.1016/j.scispo.2011.11.001","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870399783&doi=10.1016%2fj.scispo.2011.11.001&partnerID=40&md5=d3f8eeac67d286ebfbcca5d811b158d1","Preventive and Adapted Physical Activity, Faculty of Medicine and Surgery, Corso di Laurea in Scienze Motorie, University of Foggia, Viale Virgilio, Foggia, Italy","Sannicandro I., Preventive and Adapted Physical Activity, Faculty of Medicine and Surgery, Corso di Laurea in Scienze Motorie, University of Foggia, Viale Virgilio, Foggia, Italy; Rosa R.A., Preventive and Adapted Physical Activity, Faculty of Medicine and Surgery, Corso di Laurea in Scienze Motorie, University of Foggia, Viale Virgilio, Foggia, Italy; De Pascalis S., Preventive and Adapted Physical Activity, Faculty of Medicine and Surgery, Corso di Laurea in Scienze Motorie, University of Foggia, Viale Virgilio, Foggia, Italy; Piccinno A., Preventive and Adapted Physical Activity, Faculty of Medicine and Surgery, Corso di Laurea in Scienze Motorie, University of Foggia, Viale Virgilio, Foggia, Italy","Introduction: This study investigated the functional asymmetries in the lower limbs of young soccer players using the countermovement jump (CMJ). Synthesis of the facts: Fifteen young soccer players were assessed on the CMJ using two unilateral dynamometric force platforms equipped with software for the analysis of the movement. Conclusion: The results indicate that the effects of functional asymmetries are important enough to require young soccer players to undergo a preventative screening before starting a sporting regime. © 2011 Elsevier Masson SAS.","Adolescent; Countermovement jump; Injury; Prevention; Soccer","adolescent; article; athlete; biomechanics; concentric muscle contraction; countermovement jump; dynamometry; eccentric muscle contraction; ground reaction force; human; jumping; motion analysis system; muscle strength; physical examination; priority journal","Gstottner M., Neher A., Scholtz A., Millonig M., Lembert S., Raschner C., Balance ability and muscle response of the preferred and non-preferred leg in soccer players, Motor Control, 13, pp. 218-231, (2009); Bubeck D., Gollhofer A., Load induced changes of jump performance and activation patterns in free drop jump exercise and sledge jumps, Eur J Sport Sci, 3, pp. 1-17, (2001); Impellizzeri F.M., Rampinini E., Maffiulletti N., Marcora S.M., A vertical jump force test for assessing bilateral strength asymmetry in athletes, Med Sci Sports Exerc, 39, pp. 2044-2050, (2007); Wong P., Chamari K., Chaouachi A., Wei Mao D., Wisloff U., Hong Y., Difference in plantar pressure between the preferred and non-preferred feet in four soccer-related movements, Br J Sports Med, 41, pp. 84-92, (2007); Noyes F.R., Barber-Westin S.D., Fleckenstein C., Walsh C., West J., The drop jump screening test, Am J Sports Med, 33, pp. 197-207, (2006); Fousekis K., Tsepis E., Vagenas G., Lower limb strength in professional soccer players: profile, asymmetry and training age, J Sports Sci Med, 9, pp. 346-373, (2010); Hewett T.E., Myer G.D., Ford K.R., Slauterbeck J.R., Preparticipation physical examination using a box drop vertical jump test in young athletes; the effects of puberty and sex, Clin J Sport Med, 16, pp. 298-304, (2006)","I. Sannicandro; Preventive and Adapted Physical Activity, Faculty of Medicine and Surgery, Corso di Laurea in Scienze Motorie, University of Foggia, Viale Virgilio, Foggia, Italy; email: i.sannicandro@unifg.it","","","17784131","","SCSPE","","English","Sci. Sports","Article","Final","","Scopus","2-s2.0-84870399783" "Westbrook A.E.; Taylor J.B.; Nguyen A.-D.; Paterno M.V.; Ford K.R.","Westbrook, Audrey E. (57194184121); Taylor, Jeffrey B. (55829673200); Nguyen, Anh-Dung (12805987900); Paterno, Mark V. (6602774922); Ford, Kevin R. (7102539333)","57194184121; 55829673200; 12805987900; 6602774922; 7102539333","Effects of maturation on knee biomechanics during cutting and landing in young female soccer players","2020","PLoS ONE","15","5","e0233701","","","","15","10.1371/journal.pone.0233701","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85085589830&doi=10.1371%2fjournal.pone.0233701&partnerID=40&md5=496c573f7c88374fe0c508aa42465710","Department of Physical Therapy, High Point University, High Point, NC, United States; Department of Physical Therapy, University of Tennessee, Health Science Center, Memphis, TN, United States; Division of Athletic Training, West Virginia University, Morgantown, WV, United States; Division of Occupational Therapy and Physical Therapy, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, OH, United States","Westbrook A.E., Department of Physical Therapy, High Point University, High Point, NC, United States; Taylor J.B., Department of Physical Therapy, High Point University, High Point, NC, United States, Department of Physical Therapy, University of Tennessee, Health Science Center, Memphis, TN, United States; Nguyen A.-D., Department of Physical Therapy, High Point University, High Point, NC, United States, Division of Athletic Training, West Virginia University, Morgantown, WV, United States; Paterno M.V., Division of Occupational Therapy and Physical Therapy, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, OH, United States; Ford K.R., Department of Physical Therapy, High Point University, High Point, NC, United States","Young female soccer players are at high risk of anterior cruciate ligament injury due to the fast-paced nature of the sport and surplus of unplanned movements during play. Neuromuscular training programs that aim to reduce this injury by targeting the associated biomechanical movements are a potential solution. While previous studies have examined the lack of dynamic knee control during landing, there are few that outline the role that maturation can play during unanticipated cutting. Therefore, the purpose of this study was to determine if young female soccer players across multiple phases of maturation exhibited the before seen differences in knee control during a drop landing as well as an unanticipated cutting task. 139 female soccer players volunteered to participate in this study and were classified in three maturational groups based on percent adult stature: Prepubertal (PRE), pubertal (PUB), and post-pubertal (POST). Each group performed a drop vertical jump (DVJ) and an unanticipated cutting task (CUT). Standard 3D motion capture techniques were used to determine peak knee flexion/abduction angles and moments during each task. Within tasks, POST exhibited significantly greater peak abduction angles and moments compared to PUB/PRE. While each maturational group exhibited greater peak knee abduction angles during the DVJ compared to the CUT, peak knee abduction moments during the CUT were greater compared to the DVJ. Participants within each maturational group exhibited greater knee flexion during the DVJ compared to the CUT, however there were no differences identified between groups. During both tasks, POST/PUB exhibited greater peak knee flexion moments compared to PRE, as well as POST compared to PUB. Overall, each group exhibited significantly greater peak knee flexion moments during the CUT compared to the DVJ. These observed differences indicate the need for neuromuscular training programs that target both jumping and cutting techniques to reduce ACL injuries. © 2020 Westbrook et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.","","Adolescent; Adult; Athletes; Biomechanical Phenomena; Female; Humans; Knee; Male; Movement; Range of Motion, Articular; Soccer; abduction; adolescent; anterior cruciate ligament injury; Article; biomechanics; controlled study; cutting; female; human; human experiment; jumping; knee; knee function; landing; maturation; movement (physiology); normal human; post puberty; prepuberty; puberty; soccer; soccer player; three-dimensional imaging; adult; athlete; biomechanics; clinical trial; joint characteristics and functions; knee; male; movement (physiology); physiology","Koutures C.G., Gregory A.J., Council on sports m, fitness. injuries in youth soccer, Pediatrics, 125, 2, pp. 410-414, (2010); DiStefano L.J., Dann C.L., Chang C.J., Putukian M., Pierpoint L.A., Currie D.W., Et al., The first decade of web-based sports injury surveillance: Descriptive epidemiology of injuries in us high school girls' soccer (2005-2006 through 2013-2014) and national collegiate athletic association women's soccer (2004-2005 through 2013-2014), J Athl Train, 53, 9, pp. 880-892, (2018); Wong P., Hong Y., Soccer injury in the lower extremities, Br J Sports Med, 39, 8, pp. 473-482, (2005); Beck N.A., Lawrence J.T.R., Nordin J.D., DeFor T.A., Tompkins M., ACL tears in school-aged children and adolescents over 20 years, Pediatrics, 139, 3, (2017); Myer G.D., Sugimoto D., Thomas S., Hewett T.E., The influence of age on the effectiveness of neuromuscular training to reduce anterior cruciate ligament injury in female athletes: A meta-analysis, Am J Sports Med, 41, 1, pp. 203-215, (2013); Taylor J.B., Waxman J.P., Richter S.J., Shultz S.J., Evaluation of the effectiveness of anterior cruciate ligament injury prevention programme training components: A systematic review and meta-analysis, Br J Sports Med, 49, 2, pp. 79-87, (2015); Pappas E., Nightingale E.J., Simic M., Ford K.R., Hewett T.E., Myer G.D., Do exercises used in injury prevention programmes modify cutting task biomechanics? A systematic review with meta-analysis, Br J Sports Med, 49, 10, pp. 673-680, (2015); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, 10, pp. 1745-1750, (2003); Hewett T.E., Myer G.D., Kiefer A.W., Ford K.R., Longitudinal increases in knee abduction moments in females during adolescent growth, Med Sci Sports Exerc, 47, 12, pp. 2579-2585, (2015); Ford K.R., Shapiro R., Myer G.D., Van Den Bogert A.J., Hewett T.E., Longitudinal sex differences during landing in knee abduction in young athletes, Med Sci Sports Exerc, 42, 10, pp. 1923-1931, (2010); Harris P.A., Taylor R., Thielke R., Payne J., Gonzalez N., Conde J.G., Research electronic data capture (redcap) - A metadata-driven methodology and workflow process for providing translational research informatics support, J Biomed Inform, 42, 2, pp. 377-381, (2009); Khamis H.J.R., Alex F., Predicting adult stature without using skeletal age: The khamis-roche method, PEDIATRICS, 94, 4, pp. 504-507, (1994); Taylor J.B., Nguyen A.D., Paterno M.V., Huang B., Ford K.R., Real-time optimized biofeedback utilizing sport techniques (robust): A study protocol for a randomized controlled trial, BMC Musculoskelet Disord, 18, 1, (2017); Ford K.R., Nguyen A.D., Hegedus E.J., Taylor J.B., Vertical jump biomechanics altered with virtual overhead goal, J Appl Biomech, 33, 2, pp. 153-159, (2017); Kristianslund E., Krosshaug T., Comparison of drop jumps and sport-specific sidestep cutting: Implications for anterior cruciate ligament injury risk screening, Am J Sports Med, 41, 3, pp. 684-688, (2013); Kristianslund E., Faul O., Bahr R., Myklebust G., Krosshaug T., Sidestep cutting technique and knee abduction loading: Implications for acl prevention exercises, Br J Sports Med, 48, pp. 779-783, (2014); Myer G.D., Ford K.R., Brent J.L., Hewett T.E., The effects of plyometric vs. dynamic stabilization and balance training on power, balance, and landing force in female athletes, Journal of Strength and Conditioning Research, 20, 2, pp. 345-353, (2006); Myklebust G., Engebretsen L., Hoff Braekken I., Skjolberg A., Olsen O., Bahr R., Prevention of anterior cruciate ligament injuries in female team handball players: A prospective intervention study over three seasons, Clinical Journal of Sport Medicine, 13, pp. 71-78, (2003); Walden M., Atroshi I., Magnusson H., Wagner P., Hagglund M., Prevention of acute knee injuries in adolescent female football players: Cluster randomised controlled trial, BMJ, 344, (2012); Voskanian N., ACL injury prevention in female athletes: Review of the literature and practical considerations in implementing an acl prevention program, Curr Rev Musculoskelet Med, 6, 2, pp. 158-163, (2013); Benjaminse A., Gokeler A., Dowling A.V., Faigenbaum A., Ford K.R., Hewett T.E., Et al., Optimization of the anterior cruciate ligament injury prevention paradigm: Novel feedback techniques to enhance motor learning and reduce injury risk, J Orthop Sports Phys Ther, 45, 3, pp. 170-182, (2015); Ford K.R., Myer G.D., Hewett T.E., Real-time biofeedback to target risk of anterior cruciate ligament injury: A technical report for injury prevention and rehabilitation, J Sport Rehabil, 24, 2, (2015); Hewett T.E., Myer G.D., Ford K.R., Slauterbeck J.R., Preparticipation physical examination using a box drop vertical jump test in young athletes: The effects of puberty and sex, Sex Clin J Sport Med, 16, pp. 298-304, (2006)","A.E. Westbrook; Department of Physical Therapy, High Point University, High Point, United States; email: awestbro@highpoint.edu","","Public Library of Science","19326203","","POLNC","32453805","English","PLoS ONE","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85085589830" "Raja Azidin R.M.F.; Sankey S.; Drust B.; Robinson M.A.; Vanrenterghem J.","Raja Azidin, R. M. Firhad (42862343900); Sankey, Sean (55874115400); Drust, Barry (8076138400); Robinson, Mark A. (24299659200); Vanrenterghem, Jos (6506257376)","42862343900; 55874115400; 8076138400; 24299659200; 6506257376","Effects of treadmill versus overground soccer match simulations on biomechanical markers of anterior cruciate ligament injury risk in side cutting","2015","Journal of Sports Sciences","33","13","","1332","1341","9","16","10.1080/02640414.2014.990491","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929842349&doi=10.1080%2f02640414.2014.990491&partnerID=40&md5=f603d5f33dda9c838de499f525ae7a84","School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom","Raja Azidin R.M.F., School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom; Sankey S., School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom; Drust B., School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom; Robinson M.A., School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom; Vanrenterghem J., School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom","Abstract: This study aimed to investigate whether treadmill versus overground soccer match simulations have similar effects on knee joint mechanics during side cutting. Nineteen male recreational soccer players completed a 45-min treadmill and overground match simulation. Heart rate (HR) and rating of perceived exertion (RPE) were recorded every 5 min. Prior to exercise (time 0 min), at “half-time” (time 45 min) and 15 min post-exercise (time 60 min), participants performed five trials of 45° side-cutting manoeuvres. Knee abduction moments and knee extension angles were analysed using two-way repeated measures analysis of variance (α = 0.05). Physiological responses were significantly greater during the overground (HR 160 ± 7 beats ∙ min−1; RPE 15 ± 2) than the treadmill simulation (HR 142 ± 5 beats ∙ min−1; RPE 12 ± 2). Knee extension angles significantly increased over time and were more extended at time 60 min compared with time 0 min and time 45 min. No significant differences in knee abduction moments were observed. Although knee abduction moments were not altered over time during both simulations, passive rest during half-time induced changes in knee angles that may have implications for anterior cruciate ligament injury risk. © 2015, © 2015 Taylor & Francis.","anterior cruciate ligament; knee mechanics; soccer","Adult; Anterior Cruciate Ligament; Biomechanical Phenomena; Exercise Test; Heart Rate; Humans; Knee Injuries; Knee Joint; Male; Perception; Physical Exertion; Risk Factors; Soccer; Task Performance and Analysis; Young Adult; adult; anterior cruciate ligament; biomechanics; controlled study; exercise; exercise test; heart rate; human; injuries; knee; knee injury; male; pathophysiology; perception; physiology; procedures; randomized controlled trial; risk factor; soccer; task performance; young adult","Bangsbo J., Energy demands in competitive soccer, Journal of Sports Sciences, 12, pp. 5-12, (1994); Bangsbo J., Norregaard L., Thorso F., Activity profile of competition soccer, Canadian Journal of Sport Sciences, 16, 2, pp. 110-116, (1991); 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Decker M.J., Torry M.R., Wyland D.J., Sterett W.I., Richard Steadman J., Gender differences in lower extremity kinematics, kinetics and energy absorption during landing, Clinical Biomechanics, 18, 7, pp. 662-669, (2003); Delextrat A., Gregory J., Cohen D., The use of the functional H:Q ratio to assess fatigue in soccer, International Journal of Sports Medicine, 31, 3, pp. 192-197, (2010); Deluzio K.J., Harrison A.J., Coffey N., Caldwell G., The analysis of biomechanical waveform data, Research methods in biomechanics, pp. 317-336, (2014); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Russo K.A., The effect of technique change on knee loads during sidestep cutting, Medicine and Science in Sports and Exercise, 39, 10, pp. 1765-1773, (2007); Fauno P., Wulff Jakobsen B., Mechanism of anterior cruciate ligament injuries in soccer, International Journal of Sports Medicine, 27, 1, pp. 75-79, (2006); Girden E.R., ANOVA: Repeated measures, (1992); Greig M., The influence of soccer-specific fatigue on peak isokinetic torque production of the knee flexors and extensors, The American Journal of Sports Medicine, 36, 7, pp. 1403-1409, (2008); Greig M., The influence of soccer-specific activity on the kinematics of an agility sprint, European Journal of Sport Science, 9, 1, pp. 23-33, (2009); Greig M., McNaughton L.R., Lovell R.J., Physiological and mechanical response to soccer-specific intermittent activity and steady-state activity, Research in Sports Medicine: An International Journal, 14, 1, pp. 29-52, (2006); Hashemi J., Breighner R., Chandrashekar N., Hardy D.M., Chaudhari A.M., Shultz S.J., Beynnon B.D., Hip extension, knee flexion paradox: A new mechanism for non-contact ACL injury, Journal of Biomechanics, 44, 4, pp. 577-585, (2011); Hawkins R.D., Hulse M.A., Wilkinson C., Hodson A., Gibson M., The association football medical research programme: An audit of injuries in professional football, British Journal of Sports Medicine, 35, 1, pp. 43-47, (2001); Hughes G., Watkins J., A risk-factor model for anterior cruciate ligament injury, Sports Medicine, 36, 5, pp. 411-428, (2006); Kristianslund E., Krosshaug T., Van Den Bogert A.J., Effect of low pass filtering on joint moments from inverse dynamics: Implications for injury prevention, Journal of Biomechanics, 45, 4, pp. 666-671, (2012); Krustrup P., Mohr M., Steensberg A., Bencke J., Kjaer M., Bangsbo J., Muscle and blood metabolites during a soccer game: Implications for sprint performance, Medicine and Science in Sports and Exercise, 38, 6, pp. 1165-1174, (2006); Laughlin W.A., Weinhandl J.T., Kernozek T.W., Cobb S.C., Keenan K.G., O'Connor K.M., The effects of single-leg landing technique on ACL loading, Journal of Biomechanics, 44, 10, pp. 1845-1851, (2011); Lovell R., Knapper B., Small K., Physiological responses to SAFT90: A new soccer-specific match simulation, (2008); Lovell R., Midgley A., Barrett S., Carter D., Small K., Effects of different half-time strategies on second half soccer-specific speed, power and dynamic strength, Scandinavian Journal of Medicine and Science in Sports, 23, 1, pp. 105-113, (2013); Lucci S., Cortes N., Van Lunen B., Ringleb S., Onate J., Knee and hip sagittal and transverse plane changes after two fatigue protocols, Journal of Science and Medicine in Sport, 14, 5, pp. 453-459, (2011); Malfait B., Sankey S., Firhad Raja Azidin R.M., Deschamps K., Vanrenterghem J., Robinson M.A., Verschueren S., How reliable are lower-limb kinematics and kinetics during a drop vertical jump?, Medicine and Science in Sports and Exercise, 46, 4, pp. 678-685, (2014); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, Journal of Orthopaedic Research, 13, 6, pp. 930-935, (1995); McLean S.G., Felin R.E., Suedekum N., Calabrese G., Passerallo A., Joy S., Impact of fatigue on gender-based high-risk landing strategies, Medicine and Science in Sports and Exercise, 39, 3, pp. 502-514, (2007); McLean S.G., Lipfert S.W., Van Den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Medicine and Science in Sports and Exercise, 36, 6, pp. 1008-1016, (2004); McLean S.G., Samorezov J.E., Fatigue-induced ACL injury risk stems from a degradation in central control, Medicine and Science in Sports and Exercise, 41, 8, pp. 1661-1672, (2009); 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Small K., McNaughton L., Greig M., Lovell R., The effects of multidirectional soccer-specific fatigue on markers of hamstring injury risk, Journal of Science and Medicine in Sport, 13, 1, pp. 120-125, (2010); Small K., McNaughton L.R., Greig M., Lohkamp M., Lovell R., Soccer fatigue, sprinting and hamstring injury risk, International Journal of Sports Medicine, 30, 8, pp. 573-578, (2009); Thatcher R., Batterham A.M., Development and validation of a sport-specific exercise protocol for elite youth soccer players, Journal of Sports Medicine and Physical Fitness, 44, 1, pp. 15-22, (2004); Tsai L.-C., Sigward S.M., Pollard C.D., Fletcher M.J., Powers C.M., Effects of fatigue and recovery on knee mechanics during side-step cutting, Medicine and Science in Sports and Exercise, 41, 10, pp. 1952-1957, (2009); Van Gool D., Van Gervan D., Boutmans J., The physiological load imposed on soccer players during real match-play, Science and Football, pp. 317-336, (1998); Vanrenterghem J., Gormley D., Robinson M., Lees A., Solutions for representing the whole-body centre of mass in side cutting manoeuvres based on data that is typically available for lower limb kinematics, Gait and Posture, 31, 4, pp. 517-521, (2010); Vanrenterghem J., Venables E., Pataky T., Robinson M.A., The effect of running speed on knee mechanical loading in females during side cutting, Journal of Biomechanics, 45, 14, pp. 2444-2449, (2012); Walden M., Hagglund M., Werner J., Ekstrand J., The epidemiology of anterior cruciate ligament injury in football (soccer): A review of the literature from a gender-related perspective, Knee Surgery, Sports Traumatology, Arthroscopy, 19, 1, pp. 3-10, (2011); Withrow T.J., Huston L.J., Wojtys E.M., Ashton-Miller J.A., Effect of varying hamstring tension on anterior cruciate ligament strain during in vitro impulsive knee flexion and compression loading, The Journal of Bone and Joint Surgery (American Volume), 90, 4, pp. 815-823, (2008); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., The football association medical research programme: An audit of injuries in professional football–analysis of hamstring injuries, British Journal of Sports Medicine, 38, 1, pp. 36-41, (2004); Yu B., Garrett W.E., Mechanisms of non-contact ACL injuries, British Journal of Sports Medicine, 41, pp. 47-51, (2007); Yu B., Lin C.-F., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clinical Biomechanics, 21, 3, pp. 297-305, (2006)","J. Vanrenterghem; School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, Tom Reilly Building, Byrom Street, L3 3AF, United Kingdom; email: j.vanrenterghem@ljmu.ac.uk","","Routledge","02640414","","JSSCE","25583274","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84929842349" "Wang T.; Kenny R.; Wu L.C.","Wang, Timothy (57768939500); Kenny, Rebecca (57224691947); Wu, Lyndia C. (56050329900)","57768939500; 57224691947; 56050329900","Head Impact Sensor Triggering Bias Introduced by Linear Acceleration Thresholding","2021","Annals of Biomedical Engineering","49","12","","3189","3199","10","14","10.1007/s10439-021-02868-y","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116654967&doi=10.1007%2fs10439-021-02868-y&partnerID=40&md5=ba5af05388467d0ab111f0b776d79132","Department of Mechanical Engineering, The University of British Columbia, 2054-6250 Applied Science Lane, Vancouver, V6T 1Z4, BC, Canada; Faculty of Medicine, The University of British Columbia, 2194 Health Sciences Mall, Vancouver, BC, Canada","Wang T., Department of Mechanical Engineering, The University of British Columbia, 2054-6250 Applied Science Lane, Vancouver, V6T 1Z4, BC, Canada; Kenny R., Faculty of Medicine, The University of British Columbia, 2194 Health Sciences Mall, Vancouver, BC, Canada; Wu L.C., Department of Mechanical Engineering, The University of British Columbia, 2054-6250 Applied Science Lane, Vancouver, V6T 1Z4, BC, Canada","Contact sports players frequently sustain head impacts, most of which are mild impacts exhibiting 10–30 g peak head center-of-gravity (CG) linear acceleration. Wearable head impact sensors are commonly used to measure exposure and typically detect impacts using a linear acceleration threshold. However, linear acceleration across the head can substantially vary during 6-degree-of-freedom motion, leading to triggering biases that depend on sensor location and impact condition. We conducted an analytical investigation with impact characteristics extracted from on-field American football and soccer data. We assumed typical mouthguard sensor locations and evaluated whether simulated multi-directional impacts would trigger recording based on per-axis or resultant acceleration thresholding. Across 1387 impact directions, a 10g peak CG linear acceleration impact would trigger at only 24.7% and 31.8% of directions based on a 10 g per-axis and resultant acceleration threshold, respectively. Anterior impact locations had lower trigger rates and even a 30 g impact would not trigger recording in some directions. Such triggering biases also varied by sensor location and linear-rotational head kinematics coupling. Our results show that linear acceleration-based impact triggering could lead to considerable bias in head impact exposure measurements. We propose a set of recommendations to consider for sensor manufacturers and researchers to mitigate this potential exposure measurement bias. © 2021, Biomedical Engineering Society.","Head impact exposure; Head impact sensors; Impact triggering; Linear acceleration threshold; Subconcussive impacts; Triggering bias","Acceleration; Location; Wearable sensors; Acceleration threshold; Head impact; Head impact exposure; Head impact sensor; Impact sensors; Impact triggering; Linear acceleration threshold; Linear accelerations; Subconcussive impact; Triggering bias; acceleration; Article; biomechanics; equipment design; football; head impact sensor; head movement; kinematics; linear acceleration threshold; manufacturing; measurement; measurement accuracy; simulation; soccer; statistical bias; Sports","Allison M.A., Kang Y.U.N.S., Iv J.H.B., Maltese M.R., Arbogast K.B., Validation of a helmet-based system to measure head impact biomechanics in ice hockey, Med. Sci. Sports Exerc., 46, 1, pp. 115-123, (2014); Bailes J.E., Role of subconcussion in repetitive mild traumatic brain injury, J. Neurosurg., 119, 5, pp. 1087-1357, (2013); Bartsch A., Samorezov S., Benzel E., Miele V., Brett D., Validation of an intelligent mouthguard single event head impact dosimeter, Stapp Car Crash J., 58, pp. 1-27, (2014); Beckwith J.G., Greenwald R.M., Chu J.J., Crisco J.J., Rowson S., Duma S.M., Broglio S.P., Mcallister T.W., Guskiewicz K.M., Mihalik J.P., Anderson S., Schnebel B., Brolinson P.G., Timing of concussion diagnosis is related to head impact exposure prior to injury, Med. Sci. Sports Exerc., 45, 4, pp. 747-754, (2013); Camarillo D.B., Shull P.B., Mattson J., Shultz R., Garza D., An instrumented mouthguard for measuring linear and angular head impact kinematics in American football, Ann. Biomed. 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Sports Med., 28, pp. 1-17, (2019); Montenigro P.H., Alosco M.L., Martin B., Daneshvar D.H., Mez J., Chaisson C., Nowinski C.J., Au R., McKee A.C., Cantu R.C., McClean M.D., Stern R.A., Tripodis Y., Cumulative head impact exposure predicts later-life depression, apathy, executive dysfunction, and cognitive impairment in former high school and college football players, J. Neurotrauma, 13, 617, (2016); Naunheim R.S., Bayly P.V., Standeven J., Neubauer J.S., Linear and angular head accelerations during heading of a soccer ball, Med. Sci. Sports Exerc., 35, 8, pp. 1406-1412, (2003); Patton D.A., Huber C.M., Jain D., Myers R.K., McDonald C.C., Margulies S.S., Master C.L., Arbogast K.B., Head impact sensor studies in sports: a systematic review of exposure confirmation methods, Ann. Biomed. Eng., 45, pp. 1-11, (2020); Rich A.M., Filben T.M., Miller L.E., Tomblin B.T., Van Gorkom A.R., Hurst M.A., Barnard R.T., Kohn D.S., Urban J.E., Stitzel J.D., Development, validation and pilot field deployment of a custom mouthpiece for head impact measurement, Ann. Biomed. Eng., 47, 10, pp. 2109-2121, (2019); Riches P.E., A dynamic model of the head acceleration associated with heading a soccer ball, Sports Eng., 9, pp. 39-47, (2006); Rowson S., Beckwith J.G., Chu J.J., Leonard D.S., Greenwald R.M., Duma S.M., A six degree of freedom head acceleration measurement device for use in football, J. Appl. Biomech., 27, pp. 8-14, (2011); Rowson S., Duma S.M., Brain injury prediction: assessing the combined probability of concussion using linear and rotational head acceleration, Ann. Biomed. Eng., 41, pp. 873-882, (2013); Stemper B.D., Shah A.S., Harezlak J., Rowson S., Duma S., Mihalik J.P., Riggen L.D., Brooks A., Cameron K.L., Giza C.C., Houston M.N., Jackson J., Posner M.A., McGinty G., DiFiori J., Broglio S.P., McAllister T.W., McCrea M., Hoy A.M., Hazzard J.B., Kelly L.A., Ortega J.D., Port N., Putukian M., Langford T.D., Tierney R., Goldman J.T., Benjamin H.J., Buckley T., Kaminski T.W., Clugston J.R., Schmidt J.D., Feigenbaum L.A., Eckner J.T., Guskiewicz K., Miles J.D., Anderson S., Master C.L., Collins M., Kontos A.P., Bazarian J.J., Chrisman S.P., O'Donnell P., Cameron K., Susmarski A., Rowson S., Bullers C.T., Miles C.M., Dykhuizen B.H., Lintner L., Repetitive head impact exposure in college football following an NCAA rule change to eliminate two: a-day preseason practices: a study from the NCAA-DoD CARE consortium, Ann. Biomed. Eng., 47, 10, pp. 2073-2085, (2019); Stemper B.D., Shah A.S., Harezlak J., Rowson S., Mihalik J.P., Duma S.M., Riggen L.D., Brooks A., Cameron K.L., Campbell D., DiFiori J.P., Giza C.C., Guskiewicz K.M., Jackson J., McGinty G.T., Svoboda S.J., McAllister T.W., Broglio S.P., McCrea M., Comparison of head impact exposure between concussed football athletes and matched controls: evidence for a possible second mechanism of sport-related concussion, Ann. Biomed. Eng., 47, pp. 2057-2072, (2018); Tiernan S., Byrne G., O'Sullivan D.M., Evaluation of skin-mounted sensor for head impact measurement, Proc. Inst. Mech. Eng. Part H, 233, 7, pp. 735-744, (2019); Wilcox B.J., Beckwith J.G., Greenwald R.M., Chu J.J., Mcallister T.W., Flashman L.A., Maerlender A.C., Duhaime A.-C., Crisco J.J., Head impact exposure in male and female collegiate ice hockey players, J. Biomech., 47, 1, pp. 109-114, (2014); Wu L.C., Kuo C., Loza J., Kurt M., Laksari K., Yanez L.Z., Senif D., Anderson S.C., Miller L.E., Urban J.E., Stitzel J.D., Camarillo D.B., Detection of american football head impacts using biomechanical features and support vector machine classification, Sci. Rep., 8, 1, pp. 1-14, (2018); Wu L.C., Nangia V., Bui K., Hammoor B., Kurt M., Hernandez F., Kuo C., Camarillo D.B., In vivo evaluation of wearable head impact sensors, Ann. Biomed. Eng., 44, pp. 1234-1245, (2016); Wu L.C., Zarnescu L., Nangia V., Cam B., Camarillo D.B., A head impact detection system using SVM classification and proximity sensing in an instrumented mouthguard, IEEE Trans. Biomed. Eng., 61, pp. 2659-2668, (2014)","L.C. Wu; Department of Mechanical Engineering, The University of British Columbia, Vancouver, 2054-6250 Applied Science Lane, V6T 1Z4, Canada; email: lwu@mech.ubc.ca","","Springer","00906964","","ABMEC","34622314","English","Ann Biomed Eng","Article","Final","","Scopus","2-s2.0-85116654967" "Devismes M.; Aeles J.; Philips J.; Vanwanseele B.","Devismes, Morgane (57209467353); Aeles, Jeroen (57189689811); Philips, Johan (24776833900); Vanwanseele, Benedicte (15053887800)","57209467353; 57189689811; 24776833900; 15053887800","Sprint force-velocity profiles in soccer players: impact of sex and playing level","2021","Sports Biomechanics","20","8","","947","957","10","15","10.1080/14763141.2019.1618900","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85067898110&doi=10.1080%2f14763141.2019.1618900&partnerID=40&md5=c8fddee74637e8354219742c4e888556","Department of Movement Sciences, KU Leuven, Leuven, Belgium; School of Human Movement and Nutrition Sciences, University of Queensland, Brisbane, Australia; Department of Mechanical Engineering - Flanders Make Core, Lab ROB, KU Leuven, Leuven, Belgium","Devismes M., Department of Movement Sciences, KU Leuven, Leuven, Belgium; Aeles J., School of Human Movement and Nutrition Sciences, University of Queensland, Brisbane, Australia; Philips J., Department of Mechanical Engineering - Flanders Make Core, Lab ROB, KU Leuven, Leuven, Belgium; Vanwanseele B., Department of Movement Sciences, KU Leuven, Leuven, Belgium","This study aimed to assess potential differences in force-velocity (Fv) profiles in both male and female soccer players of different playing levels. One hundred sixty three soccer players (63 women and 100 men) competing from the Regional to the National Belgian league were recruited. The participants performed two maximal 60-m sprints monitored via a 312 Hz laser. For each participant, the theoretical maximal force (F0) and velocity (v0), maximal power (Pmax), maximal ratio of force (RF) and the slope of the Fv profile (Sfv) were computed. Male players in the highest competition level showed higher values for all the Fv variables compared to lower level groups (Effect size range: 1.01–1.97). Higher Pmax and v0 were observed in the female players of highest competition level compared to all other groups (ES range: 1.09–1.48). Female players showed more negative Sfv than male players (ES = 1.11), which suggests that male players’ Fv profile is more velocity-oriented compared to female players. This study shows that the determinants of sprint performance increase with soccer playing level in both men and women, but that the contribution of each variable varies with sex. © 2019 Informa UK Limited, trading as Taylor & Francis Group.","acceleration; Sprint performance; team sports; training individualisation","Acceleration; Athletic Performance; Biomechanical Phenomena; Female; Humans; Male; Running; Soccer; acceleration; athletic performance; biomechanics; female; human; male; running; soccer","Bangsbo J., Norregaard L., Thorso F., Activity profile of competition soccer, Canadian Journal of Sport Sciences, 16, pp. 110-116, (1991); Buchheit M., Samozino P., Glynn J.A., Simpson B.M., Al Haddad H., Mendez-Villanueva A., Morin J.B., Mechanical determinants of acceleration and maximal sprinting speed in highly trained young soccer players, Journal of Sports Sciences, 32, pp. 1906-1913, (2014); Coen B., Urhausen A., Coen G., Kindermann W., Der Fußball-score: Bewertung der körperlichen fitness [A soccer specific fitness score], Deutsche Zeitschrift Für Sportmedizin, 49, pp. 187-192, (1998); Cross M., Brughelli M., Samozino P., Morin J.B., Methods of power-force-velocity profiling during sprint running: A narrative review, Sports Medicine, 47, pp. 1255-1269, (2017); Di Salvo V., Baron R., Tschan H., Calderon Montero F.J., Bachl N., Pigozzi F., Performance characteristics according to playing position in elite soccer, International Journal of Sports Medicine, 28, pp. 222-227, (2007); Dumbar G., Power K., Fitness profiles of English professional and semi-professional soccer players using a battery of field tests, Journal of Sports Sciences, 13, pp. 501-502, (1995); Faude O., Koch T., Meyer T., Straight sprinting is the most frequent action in goal situations in professional football, Journal of Sports Sciences, 30, pp. 625-631, (2012); Big count: 265 million playing football; Fenwick A.J., Wood A.M., Tanner B.C.W., Effects of cross-bridge compliance on the force-velocity relationship and muscle power output, PlosOne, 12, (2017); Haugen T., Tonnessen E., Hisdal J., Seiler S., The role and development of sprinting speed in soccer. Brief review, International Journal of Sports Physiology and Performance, 9, pp. 432-441, (2014); Haugen T., Tonnessen E., Seiler S., Speed and countermovement-jump characteristics of elite female soccer players, 1995-2010, International Journal of Sports Physiology and Performance, 7, pp. 340-349, (2012); Haugen T., Tonnessen E., Seiler S., Anaerobic performance testing of professional soccer players 1995-2010, International Journal of Sports Physiology and Performance, 8, pp. 146-156, (2013); Jimenez-Reyes P., Garcia-Ramos A., Cuadrado-Penafiel V., Parraga-Montilla J.A., Morcillo-Losa J.A., Samozino P., Morin J.B., Differences in sprint mechanical force-velocity profile between trained soccer and futsal players, International Journal of Sports Physiology and Performance, 14, pp. 478-485, (2019); Jimenez-Reyes P., Samonizon P., Garcia-Ramos A., Cuadrado-Penafiel V., Brughelli M., Moring J.B., Relationship between vertical and horizontal force-velocity-power profiles in various sports and levels of practice, PeerJ, 6, (2018); Marcote-Pequeno R., Garcia-Ramos A., Cuadrado-Penafiel V., Gonzalez-Hernandez J.M., Gomez M.A., Jimenez-Reyes P., Association between the force–velocity profile and performance variables obtained in jumping and sprinting in elite female soccer players, International Journal of Sports Physiology and Performance, 14, pp. 209-215, (2019); Morin J.B., Bourdin M., Edouard P., Peyrot N., Samozino P., Lacour J.R., Mechanical determinants of 100-m sprint running performance, European Journal of Applied Physiology, 112, (2012); Morin J.B., Edouard P., Samozino P., Technical ability of force application as a determinant factor of sprint performance, Medicine and Science in Sports and Exercise, 43, pp. 259-265, (2011); Morin J.B., Samozino P., Interpreting power-force-velocity profiles for individualized and specific training, International Journal of Sports Physiology and Performance, 11, pp. 267-272, (2016); Morin J.B., Samozino P., Bonnefoy R., Edouard P., Belli A., Direct measurement of power during one single sprint on treadmill, Journal of Biomechanics, 43, pp. 1970-1975, (2010); Mujika I., Santisteban J., Impellizzeri F.M., Castagna C., Fitness determinants of success in men’s and women’s football, Journal of Sports Sciences, 27, pp. 107-114, (2009); Rabita G., Dorel S., Slawinski J., Saez-de-Villarreal E., Couturier A., Samozino P., Morin J.B., Sprint mechanics in world-class athletes: A new insight into the limits of human locomotion, Scandinavian Journal of Medicine and Science in Sports, 25, pp. 583-594, (2015); Rakovic E., Paulsen G., Helland C., Eriksrud O., Haugen T., The effect of individualised sprint training in elite female team sport athletes: A pilot study, Journal of Sports Sciences, 36, pp. 2802-2808, (2018); Samozino P., Rabita G., Dorel S., Slawinski J., Peyrot N., Saez de Villarreal E., Morin J.B., A simple method for measuring power, force, velocity properties, and mechanical effectiveness in sprint running, Scandinavian Journal of Medicine and Science in Sports, 26, pp. 648-658, (2016); Samozino P., Rejc E., Di P.P.E., Belli A., Morin J.B., Optimal force-velocity profile in ballistic movements-altius: Citius of fortius?, Medicine and Science in Sports and Exercise, 44, pp. 313-322, (2012); Sedano S., Vaeyens R., Philippaerts R., Redondo J.C., Cuadrado G., Anthropometric and anaerobic fitness profile of elite and non-elite female soccer players, Journal of Sports Medicine and Physical Fitness, 49, pp. 387-394, (2009); Tomarken A.J., Serlin R.C., Comparison of ANOVA alternatives under variance heterogeneity and specific noncentrality structures, Psychological Bulletin, 99, pp. 90-99, (1986); (2014)","B. Vanwanseele; Department of Movement Sciences, KU Leuven, Leuven, Belgium; email: Benedicte.vanwanseele@kuleuven.be","","Routledge","14763141","","","31223073","English","Sports Biomech.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85067898110" "Wilhelm E.N.; Radaelli R.; Da Silva B.G.C.; Botton C.E.; Barbosa R.; Bottaro M.; Brown L.E.; Pinto R.S.","Wilhelm, Eurico N. (53980613900); Radaelli, Regis (36442589700); Da Silva, Bruna G.C. (36508622800); Botton, Cíntia E. (55062339700); Barbosa, Rafael (58583982200); Bottaro, Martim (55123938100); Brown, Lee E. (7404221149); Pinto, Ronei S. (26041048000)","53980613900; 36442589700; 36508622800; 55062339700; 58583982200; 55123938100; 7404221149; 26041048000","Single-joint isometric rate of torque development is not related to counter-movement jump performance in soccer players","2013","Isokinetics and Exercise Science","21","3","","181","186","5","16","10.3233/IES-130513","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883658865&doi=10.3233%2fIES-130513&partnerID=40&md5=1649407a4ad881843e043d1052ee37e7","Exercise Research Laboratory, School of Physical Education, Federal University of Rio Grande do Sul, Jardim Botanico, CEP: 90690-200, Porto Alegre, RS, Felizardo Street, 750, Brazil; College of Physical Education and Exercise Science, University of Brasília, Brasília, Brazil; Department of Kinesiology, California State University, Fullerton, CA, United States","Wilhelm E.N., Exercise Research Laboratory, School of Physical Education, Federal University of Rio Grande do Sul, Jardim Botanico, CEP: 90690-200, Porto Alegre, RS, Felizardo Street, 750, Brazil; Radaelli R., Exercise Research Laboratory, School of Physical Education, Federal University of Rio Grande do Sul, Jardim Botanico, CEP: 90690-200, Porto Alegre, RS, Felizardo Street, 750, Brazil; Da Silva B.G.C., Exercise Research Laboratory, School of Physical Education, Federal University of Rio Grande do Sul, Jardim Botanico, CEP: 90690-200, Porto Alegre, RS, Felizardo Street, 750, Brazil; Botton C.E., Exercise Research Laboratory, School of Physical Education, Federal University of Rio Grande do Sul, Jardim Botanico, CEP: 90690-200, Porto Alegre, RS, Felizardo Street, 750, Brazil; Barbosa R., Exercise Research Laboratory, School of Physical Education, Federal University of Rio Grande do Sul, Jardim Botanico, CEP: 90690-200, Porto Alegre, RS, Felizardo Street, 750, Brazil; Bottaro M., College of Physical Education and Exercise Science, University of Brasília, Brasília, Brazil; Brown L.E., Department of Kinesiology, California State University, Fullerton, CA, United States; Pinto R.S., Exercise Research Laboratory, School of Physical Education, Federal University of Rio Grande do Sul, Jardim Botanico, CEP: 90690-200, Porto Alegre, RS, Felizardo Street, 750, Brazil","Background and Objective: The quadriceps rate of torque development (RTD) is frequently used to evaluate explosive performance, but its functional meaning has been questioned. Thus, the aim of this study was to investigate if isometric quadriceps RTD correlates with multi-joint dynamic performance and if it has greater correlation with dynamic performance than with a single-joint isokinetic test in soccer players. Methods: Thirty-nine male soccer players (age 21 ± 5 years, body mass 75 ± 7.5 kg, height 179 ± 5 cm) performed five maximal concentric knee extension isokinetic contractions at a velocity of 180°/s, followed by three maximal voluntary isometric contractions (MVIC) with knee angle of 60°, and five countermovement jumps (CMJ). The RTD was derived from MIVC over various time intervals (of 0.05, 0.1, 0.2, 0.3 seconds, and peak RTD) and CMJ height was calculated by flight time method. Pearson Product Moment Correlations were used to determine the relationships between variables. Results: Absolute and relative isokinetic PT correlated positively with CMJ height (p< 0.001, r=0.513 and p=0.0007, r=0.521, respectively). However, none of the isometric RTD measures showed significant relationship with CMJ height (p> 0.05, r from -0.272 to 0.296). Conclusion: These results indicate that single-joint isometric RTD does not correlate with dynamic multi-joint performance. Thus, more specific tests in relation to contraction type, velocity and/or movement pattern should be used. © 2013 - IOS Press and the authors.","Knee extension; Muscle power; Muscle strength; Peak torque","adult; article; athletic performance; biomechanics; human; human experiment; jumping; knee function; male; muscle isometric contraction; torque","Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer: An update, Sports Med., 35, 6, pp. 501-36, (2005); Wisloff U., Castagna C., Helgerud J., Jones R., Hoff J., Strong correlation of maximal squat strength with sprint performance and vertical jump height in elite soccer players, Br J Sports Med., 38, 3, pp. 285-8, (2004); Aagaard P., Simonsen E.B., Andersen J.L., Magnusson P., Dyhre-Poulsen P., Increased rate of force development and neural drive of human skeletal muscle following resistance training, J Appl Physiol., 93, 4, pp. 1318-26, (2002); West D.J., Owen N.J., Jones M.R., Bracken R.M., Cook C.J., Cunningham D.J., Et al., Relationships between force-time characteristics of the isometric midthigh pull and dynamic performance in professional rugby league players, J Strength Cond Res., 25, 11, pp. 3070-5, (2011); De Ruiter C.J., Van Leeuwen D., Heijblom A., Bobbert M.F., De Haan A., Fast unilateral isometric knee extension torque development and bilateral jump height, Med Sci Sports Exerc., 38, 10, pp. 1843-52, (2006); Andersen L.L., Aagaard P., Influence of maximal muscle strength and intrinsic muscle contractile properties on contractile rate of force development, Eur J Appl Physiol., 96, 1, pp. 46-52, (2006); Aagaard P., Training-induced changes in neural function, Exerc Sport Sci Rev., 31, 2, pp. 61-7, (2003); Zatsiorsky V.M., Biomechanics of strength and strength training, Strength and Power in Sport. The Encyclopaedia of Sports Medicine, pp. 439-87, (2003); Tillin N.A., Pain M.T., Folland J., Explosive force production during isometric squats correlates with athletic performance in rugby union players, J Sports Sci., (2012); Wilson G.J., Lyttle A.D., Ostrowski K.J., Murphy A.J., Assessing dynamic performance: A comparison of rate of force development tests, J Strength Cond Res., 9, 3, pp. 176-81, (1995); Young W.B., Bilby G.E., The effect of voluntary effort to influence speed of contraction on strength, muscular power, and hypertrophy development, J Strength Cond Res., 7, 3, pp. 172-8, (1993); Stone M.H., Sands W.A., Carlock J., Callan S., Dickie D., Daigle K., Et al., The importance of isometric maximum strength and peak rate-of-force development in sprint cycling, J Strength Cond Res., 18, 4, pp. 878-84, (2004); Nuzzo J.L., McBride J.M., Cormie P., McCaulley G.O., Relationship between countermovement jump performance and multijoint isometric and dynamic tests of strength, J Strength Cond Res., 22, 3, pp. 699-707, (2008); Newton R.U., Hakkinen K., Hakkinen A., McCormick M., Volek J., Kraemer W.J., Mixed-methods resistance training increases power and strength of young and older men, Med Sci Sports Exerc., 34, 8, pp. 1367-75, (2002); Zebis M.K., Andersen L.L., Ellingsgaard H., Aagaard P., Rapid hamstring/quadriceps force capacity in male vs. Female elite soccer players, J Strength Cond Res., 25, 7, pp. 1989-93, (2011); Khamoui A.V., Brown L.E., Nguyen D., Uribe B.P., Coburn J.W., Noffal G.J., Et al., Relationship between force-time and velocity-time characteristics of dynamic and isometric muscle actions, J Strength Cond Res., 25, 1, pp. 198-204, (2011); Thorstensson A., Grimby G., Karlsson J., Force-velocity relations and fiber composition in human knee extensor muscles, J Appl Physiol., 40, 1, pp. 12-6, (1976); Korhonen M.T., Cristea A., Alen M., Hakkinen K., Sipila S., Mero A., Et al., Aging, muscle fiber type, and contractile function in sprint-trained athletes, J Appl Physiol., 101, 3, pp. 906-17, (2006); Aagaard P., Andersen J.L., Correlation between contractile strength and myosin heavy chain isoform composition in human skeletal muscle, Med Sci Sports Exerc., 30, 8, pp. 1217-22, (1998); De Ruiter C.J., Kooistra R.D., Paalman M.I., De Haan A., Initial phase of maximal voluntary and electrically stimulated knee extension torque development at different knee angles, J Appl Physiol., 97, 5, pp. 1693-701, (2004); Baker D., Wilson G., Carlyon B., Generality versus specificity: A comparison of dynamic and isometric measures of strength and speed-strength, Eur J Appl Physiol Occup Physiol., 68, 4, pp. 350-5, (1994); Murphy A.J., Wilson G.J., Poor correlations between isometric tests and dynamic performance: Relationship to muscle activation, Eur J Appl Physiol Occup Physiol., 73, 3-4, pp. 353-7, (1996); Nakazawa K., Kawakami Y., Fukunaga T., Yano H., Miyashita M., Differences in activation patterns in elbow flexor muscles during isometric, concentric and eccentric contractions, Eur J Appl Physiol Occup Physiol., 66, 3, pp. 214-20, (1993); Babault N., Pousson M., Michaut A., Van Hoecke J., Effect of quadriceps femoris muscle length on neural activation during isometric and concentric contractions, J Appl Physiol., 94, 3, pp. 983-90, (2003); Murphy A.J., Wilson G.J., Pryor J.F., Newton R.U., Isometric assessment of muscular function: The effect of joint angle, J Appl Biomech., 11, 2, pp. 205-15, (1995); Watanabe K., Akima H., Effect of knee joint angle on neuromuscular activation of the vastus intermedius muscle during isometric contraction, Scand J Med Sci Sports., 21, 6, (2011); Tsiokanos A., Kellis E., Jamurtas A., Kellis S., The relationship between jumping performance and isokinetic strength of hip and knee extensors and ankle plantar flexors, Isokinet Exerc Sci., 10, 2, pp. 107-15, (2002); Destaso J., Kaminski T.W., Perrin D.H., Relationship be-tween drop vertical jump heights and isokinetic measures uti-lizing the stretch-shortening cycle, Isokinet Exerc Sci., 6, pp. 175-9, (1997); Blackburn J.R., Morrissey M.C., The relationship between open and closed kinetic chain strength of the lower limb and jumping performance, J Orthop Sports Phys Ther., 27, 6, pp. 430-5, (1998)","E.N. Wilhelm; Exercise Research Laboratory, School of Physical Education, Federal University of Rio Grande do Sul, Jardim Botanico, CEP: 90690-200, Porto Alegre, RS, Felizardo Street, 750, Brazil; email: euricowilhelm@gmail.com","","","18785913","","IESCE","","English","Isokinetics Exerc. Sci.","Article","Final","","Scopus","2-s2.0-84883658865" "Okholm Kryger K.; Jarratt V.; Mitchell S.; Forrester S.","Okholm Kryger, Katrine (56470710000); Jarratt, Vicky (57190179784); Mitchell, Séan (7402391965); Forrester, Steph (23468912800)","56470710000; 57190179784; 7402391965; 23468912800","Can subjective comfort be used as a measure of plantar pressure in football boots?","2017","Journal of Sports Sciences","35","10","","953","959","6","12","10.1080/02640414.2016.1206661","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978114094&doi=10.1080%2f02640414.2016.1206661&partnerID=40&md5=d2c8c137d956e9731243e50a474aa69e","Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, United Kingdom; Sports Technology Institute, Loughborough University, Loughborough, United Kingdom","Okholm Kryger K., Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, United Kingdom, Sports Technology Institute, Loughborough University, Loughborough, United Kingdom; Jarratt V., Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, United Kingdom; Mitchell S., Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, United Kingdom, Sports Technology Institute, Loughborough University, Loughborough, United Kingdom; Forrester S., Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, United Kingdom, Sports Technology Institute, Loughborough University, Loughborough, United Kingdom","Comfort has been shown to be the most desired football boot feature by players. Previous studies have shown discomfort to be related to increased plantar pressures for running shoes which, in some foot regions, has been suggested to be a causative factor in overuse injuries. This study examined the correlation between subjective comfort data and objective plantar pressure for football boots during football-specific drills. Eight male university football players were tested. Plantar pressure data were collected during four football-specific movements for each of three different football boots. The global and local peak pressures based on a nine-sectioned foot map were compared to subjective comfort measures recorded using a visual analogue scale for global discomfort and a discomfort foot map for local discomfort. A weak (rs = −0.126) yet significant (P < 0.05) correlation was shown between the peak plantar pressure experienced and the visual analogue scale rated comfort. The model only significantly predicted (P > 0.001) the outcome for two (medial and lateral forefoot) of the nine foot regions. Subjective comfort data is therefore not a reliable measure of increased plantar pressures for any foot region. The use of plantar pressure measures is therefore needed to optimise injury prevention when designing studded footwear. © 2016 Informa UK Limited, trading as Taylor & Francis Group.","discomfort; foot sensitivity; Soccer; Tekscan; visual analogue scale","Biomechanical Phenomena; Equipment Design; Foot; Humans; Male; Pressure; Running; Shoes; Soccer; Sports Equipment; Young Adult; biomechanics; equipment design; foot; human; male; physiology; pressure; running; shoe; soccer; sports equipment; young adult","Bennell K.L., Malcolm S.A., Wark J.D., Brukner P.D., Models for the pathogenesis of stress fractures in athletes, British Journal ofSports Medicine, 30, pp. 200-204, (1996); Bentley J.A., Ramanathan A.K., Arnold G.P., Wang W., Abboud R.J., Harmful cleats of football boots: A biomechanical evaluation, Foot and Ankle Surgery, 17, pp. 140-144, (2011); Brace N., SPSS for psychologists, (2012); Braunstein B., Schulze N., Sanno M., Bruggemann G.-P., Comfort and plantar pressure pattern during running with prefabricated insoles, (2015); Che H., Nigg B.M., de Koning J., Relationship between plantar pressure distribution under the foot and insole comfort, Clinical Biomechanics, 9, pp. 335-341, (1994); Chen H., Nigg B.M., Hulliger M., de Koning J., Influence of sensory input on plantar pressure distribution, Clinical Biomechanics, 10, pp. 271-274, (1995); Debiasio J.C., Russell M.E., Butler R.J., Nunley J.A., Queen R.M., Changes in plantar loading based on shoe type and sex during a jump-landing task, Journal of Athletic Training, 48, pp. 601-609, (2013); Dinato R.C., Ribeiro A.P., Butugan M.K., Pereira I.L.R., Onodera A.N., Sacco I.C.N., Biomechanical variables and perception of comfort in running shoes with different cushioning technologies, Journal of Science and Medicine inSport, 18, pp. 93-97, (2014); Eils E., Streyl M., Linnenbecker S., Thorwesten L., Volker K., Rosenbaum D., Characteristic plantar pressure distribution patterns during soccer-specific movements, American Journal ofSports Medicine, 32, pp. 140-145, (2004); Ekstrand J., van Dijk C.N., Fifth metatarsal fractures among male professional footballers: A potential career-ending disease, British Journal Sports Medicine, 47, pp. 754-758, (2013); El Kati R., Forrester S., Fleming P., Evaluation of pressure insoles during running, Procedia Engineering, 2, pp. 3053-3058, (2010); FIFA quality concept for football turf, (2010); Fletcher I.M., Monte-Colombo M.M., An investigation into the effects of different warm-up modalities on specific motor skills related to soccer performance, Journal ofStrength and Conditioning Research, 24, pp. 2096-2101, (2010); Ford K.R., Manson N.A., Evans B.J., Myer G.D., Gwin R.C., Heidt R.S., Hewett T.E., Comparison of in-shoe foot loading patterns on natural grass and synthetic turf, Journal of Science and Medicine inSport, 9, pp. 433-440, (2006); Hennig E.M., The influence of soccer shoe design on player performance and injuries, Research in Sports Medicine, 19, pp. 186-201, (2011); Hennig E.M., Plantar pressure measurements for the evaluation of shoe comfort, overuse injuries and performance in soccer, Footwear Science, 6, pp. 119-127, (2014); Hinz P., Henningsen A., Matthes G., Jager B., Ekkernkamp A., Rosenbaum D., Analysis of pressure distribution below the metatarsals with different insoles in combat boots of the German Army for prevention of march fractures, Gait & Posture, 27, pp. 535-538, (2008); Hong W.-H., Lee Y.-H., Chen H.-C., Pei Y.-C., Wu C.-Y., Influence of heel height and shoe insert on comfort perception and biomechanical performance of young female adults during walking, Foot & Ankle International, 26, pp. 1042-1048, (2005); Jordan C., Bartlett R., Pressure distribution and perceived comfort in casual footwear, Gait & Posture, 3, pp. 215-220, (1995); Kinchington M.A., Ball K.A., Naughton G., Effects of footwear on comfort and injury in professional rugby league, Journal ofSports Sciences, 29, pp. 1407-1415, (2011); Kinchington M.A., Ball K.A., Naughton G., Relation between lower limb comfort and performance in elite footballers, Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine, 13, pp. 27-34, (2012); Kong P.W., De Heer H., Wearing the F-Scan mobile in-shoe pressure measurement system alters gait characteristics during running, Gait & Posture, 29, pp. 143-145, (2009); Lam W.K., Sterzing T., Cheung J.T.M., Reliability of a basketball specific testing protocol for footwear fit and comfort perception, Footwear Science, 3, pp. 151-158, (2011); Luo G., Stergiou P., Worobets J., Nigg B., Stefanyshyn D., Improved footwear comfort reduces oxygen consumption during running, Footwear Science, 1, pp. 25-29, (2009); Miller J.E., Nigg B.M., Liu W., Stefanyshyn D.J., Nurse M.A., Influence of foot, leg and shoe characteristics on subjective comfort, Foot & Ankle International, 21, pp. 759-767, (2000); Mills K., Blanch P., Vicenzino B., Identifying clinically meaningful tools for measuring comfort perception of footwear. [Miscellaneous article], Medicine & Science inSports & Exercise, 42, pp. 1966-1971, (2010); Mills K., Blanch P., Vicenzino B., Influence of contouring and hardness of foot orthoses on ratings of perceived comfort, Medicine & Science inSports & Exercise, 43, pp. 1507-1512, (2011); Mundermann A., Nigg B.M., Stefanyshyn D.J., Humble R.N., Development of a reliable method to assess footwear comfort during running, Gait & Posture, 16, pp. 38-45, (2002); Mundermann A., Stefanyshyn D.J., Nigg B.M., Relationship between footwear comfort of shoe inserts and anthropometric and sensory factors, Medicine and Science inSports and Exercise, 33, pp. 1939-1945, (2001); Nigg B.M., Nurse M.A., Stefanyshyn D.J., Shoe inserts and orthotics for sport and physical activities, Medicine & Science inSports & Exercise, 31, pp. SS421-SS428, (1999); Nunns M.P.I., Dixon S.J., Clarke J., Carre M., Boot-insole effects on comfort and plantar loading at the heel and fifth metatarsal during running and turning in soccer, Journal of Sports Sciences, pp. 1-8, (2015); Queen R.M., Charnock B.L., Garrett W.E., Hardaker W.M., Sims E.L., Moorman C.T., A comparison of cleat types during two football-specific tasks on FieldTurf, British Journal ofSports Medicine, 42, (2008); Queen R.M., Haynes B.B., Hardaker W.M., Garrett W.E., Forefoot loading during 3 athletic tasks, The American Journal ofSports Medicine, 35, pp. 630-636, (2007); Redmond A.C., Crosbie J., Ouvrier R.A., Development and validation of a novel rating system for scoring standing foot posture: The foot posture index, Clinical Biomechanics, 21, pp. 89-98, (2006); Reinschmidt C., Nigg B.M., Current issues in the design of running and court shoes, Sportverletzung Sportschaden : Organ der Gesellschaft für Orthopädisch-Traumatologische Sportmedizin, 14, pp. 71-81, (2000); Santos D., Carline T., Flynn L., Pitman D., Feeney D., Patterson C., Westland E., Distribution of in-shoe dynamic plantar foot pressures in professional football players, The Foot, 11, pp. 10-14, (2001); Sims E.L., Hardaker W.M., Queen R.M., Gender differences in plantar loading during three soccer-specific tasks, British Journal ofSports Medicine, 42, pp. 272-277, (2008); Warden S.J., Creaby M.W., Bryant A.L., Crossley K.M., Stress fracture risk factors in female football players and their clinical implications, British Journal ofSports Medicine, 41, pp. i38-i43, (2007); Wegener C., Burns J., Penkala S., Effect of neutral-cushioned running shoes on plantar pressure loading and comfort in athletes with Cavus feet: A crossover randomized controlled trial, The American Journal of Sports Medicine, 36, pp. 2139-2146, (2008); Williams A.E., Nester C.J., Patient perceptions of stock footwear design features, Prosthetics and Orthotics International, 30, pp. 61-71, (2006); Wong P., Chamari K., Mao D.W., Wisloff U., Hong Y., Higher plantar pressure on the medial side in four soccer-related movements, British Journal of Sports Medicine, 41, pp. 93-100, (2007)","K. Okholm Kryger; Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, United Kingdom; email: K.O.Kryger@lboro.ac.uk","","Routledge","02640414","","JSSCE","27400240","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84978114094" "Berg K.E.; LaVoie J.C.; Latin R.W.","Berg, Kris E. (7401939252); LaVoie, Joseph C. (7103144639); Latin, Richard W. (7004728229)","7401939252; 7103144639; 7004728229","Physiological training effects of playing youth soccer","1985","Medicine and Science in Sports and Exercise","17","6","","656","660","4","13","10.1249/00005768-198512000-00006","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0022373608&doi=10.1249%2f00005768-198512000-00006&partnerID=40&md5=d1eaae9c8622e4a6b75ee9a06e84bbb1","School of Health, Physical Education, and Recreation, Department of Psychology, University of Nebraska at Omaha, Omaha, NE, 68182-0216, United States","Berg K.E., School of Health, Physical Education, and Recreation, Department of Psychology, University of Nebraska at Omaha, Omaha, NE, 68182-0216, United States; LaVoie J.C., School of Health, Physical Education, and Recreation, Department of Psychology, University of Nebraska at Omaha, Omaha, NE, 68182-0216, United States; Latin R.W., School of Health, Physical Education, and Recreation, Department of Psychology, University of Nebraska at Omaha, Omaha, NE, 68182-0216, United States","BERG, K.E., J.C. LAVOIE, and R.W. LATIN. Physiological training effects of playing youth soccer. Med. Sci. Sports Exerc., Vol. 17, No. 6, pp. 656-660, 1985. The purpose of this investigation was to determine if a 9-wk youth soccer program had any effect on cardiorespiratory fitness (V˙O2maxand V˙O2submax), peak knee torque, and flexibility. Subjects were 20 sixth grade boys, 11 of whom were members pf a YMCA soccer team; 9 were normally active boys who were not participating in any organized sport during the study who served' as a control group. Mean ages (±SD) were 11.8 ± 0.34 and 11.5 ± 0.60 yr for the soccer and control group, respectively. Initial V˙O2maxvalues of 49.83 and 47.42 ml.kg-1.min-1for the soccer and the control group, respectively, are similar to those reported in the literature for untrained normal boys of this age. Results indicated that playing soccer three times weekly increased V˙Emaxand reduced V˙O2(ml·kg-1·min-1and l·min-1) at a submaximal running speed (all P's < 0.O5), while no change in V˙O2maxwas noted. No significant training effect was observed in peak knee torque or flexibility subsequent to soccer training. It is concluded that the effects of playing soccer in these subjects resulted in no change in cardiorespiratory fitness, peak knee torque, or flexibility. © 1985 by the American College of Sports Medicine.","Growth and development; Soccer; Training; V˙O2max","Biomechanics; Body Height; Body Weight; Child; Heart Rate; Human; Knee Joint; Male; Oxygen Consumption; Physical Education and Training; Physical Fitness; Pulmonary Gas Exchange; Soccer; Sports; Total Lung Capacity; cardiopulmonary hemodynamics; cardiovascular system; child; clinical article; controlled study; diagnosis; education; flexibility; great blood vessel; growth; heart; human; joint; juvenile; knee; lung function; normal human; normal value; respiratory system; running; school child; short survey; sport; training; velocity","Guidelines for Graded Exercise Testing and Exercise Prescription, pp. 33-56, (1980); Andrew G.M., Becklake M.R., Guleria J.S., Bates D.V., Heart and lung functions in swimmers and non-athletes during growth, J. Appl. Physiol, 32, pp. 245-251, (1972); Astrand I., Aerobic work capacity in men and women with special reference to age, Acta Physiol. Scand, 49, (1960); Astrand P.O., Rodahl K., Textbook of Work Physiology, pp. 391-445, (1977); Bailey D.A., Exercise, fitness, and physical education for the growing child: A concern, Can. J. Public Health, 64, pp. 421-430, (1973); Berg K., Sady S., Beal D., Savage M., Smith J., Development of an elementary school coronary heart disease prevention program, Phys. Sportsmed, 11, 10, pp. 99-105, (1983); Caru B., Le Coultre L., Aghemo P., Pinera Limas F., Maximal aerobic and anaerobic muscular power in football players, J. Sports Med, 10, pp. 100-103, (1970); Clausen J.P., Klausen K., Rasmussen B., Trap-Jensen J., Central and peripheral circulatory changes after training of the arms or legs, Am. J. Physiol, 225, pp. 675-682, (1973); Cunningham D.A., Telford P., Swart G.T., The cardiopulmonary capacities of young hockey players: Age 10, Med. Sci. Sports, 8, pp. 23-25, (1976); Cunningham D.A., Eynon R.B., The working capacity of young competitive swimmers, 10-16 years of age, Med. Sci. Sports, 5, pp. 227-231, (1973); Daniels J., Oldridge N., Changes in oxygen consumption of young boys during growth and running training, Med. Sci. Sports, 3, pp. 161-165, (1971); Ferguson R.J., Marcotte G.G., Montpetit R.R., A maximal oxygen uptake test during ice skating, Med. Sci. Sports, 1, pp. 207-211, (1969); Fox E., Bartels R., Billings C., O'brien R., Bason R., Mathews D., Frequency and duration of interval training programs and changes in aerobic power, J. Appl. Physiol, 38, pp. 481-484, (1975); Gilliam T.B., Katch V.L., Thorland W.G., Welt-Man A.L., Prevalence of coronary heart disease risk factors in active children 7 to 12 years of age, Med. Sci. Sports, 9, pp. 21-22, (1977); Leighton J.R., The Leighton flexometer and flexibility test, J. Assoc. Phys. Ment. Rehab, 20, pp. 86-93, (1966); Kobayashi K., Kitamura K., Miura M., Sodeyama H., Murase Y., Miyashita M., Matsui H., Aerobic power as related to body growth and training in Japanese boys: A longitudinal study, J. Appl. Physiol, 44, 5, pp. 666-672, (1978); Lussier L., Buskirk E.R., Effects of an endurance training regimen on assessment of work capacity in prepubertal children, Ann. NY Acad. Sci, 301, pp. 734-747, (1977); Mayers N., Gutin B., Physiological characteristics of elite prepubertal cross-country runners, Med. Sci. Sports, 11, pp. 172-176, (1979); Raven P.B., Gettman L.R., Pollock M.L., Cooper K.H., A physiological evaluation of professional soccer players, Br. J. Sports Med, 10, pp. 209-216, (1976); Saltin R., Karlsson J., Muscle glycogen utilization during work of different intensities, Muscle Metabolism During Exercise, pp. 289-299, (1971); Saunders R.L., Montoye H.J., Cunningham D.A., Kozar A.J., Physical fitness of high school students and participation in physical education classes, Res. Quart, 40, pp. 552-560, (1969); Shephard R.J., The working capacity of school children, Frontiers of Fitness, pp. 219-244, (1971); Sobolova V., Seliger V., Grussova D., Machovcova J., Zelenka V., The influence of age and sport training in swimming on physical fitness, Acta Paediatr. Scand, 217, pp. 63-67, (1971); Stewart K., Gutin B., Effects of physical training on cardiorespiratory fitness in children, Res. Quart, 47, pp. 110-120, (1976); Vrijens J., Muscle strength development in the pre- and post-pubescent age, Medicine and Sport (Vol. II): Pediatric Work Physiology, pp. 152-158, (1978)","","","","01959131","","","4079737","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-0022373608" "Herman D.C.; Riveros D.; Jacobs K.; Harris A.; Massengill C.; Vincent H.K.","Herman, Daniel C. (56524067600); Riveros, Diego (57204975592); Jacobs, Kimberly (57204977210); Harris, Andrew (57209008246); Massengill, Christopher (57208585866); Vincent, Heather K. (7006589229)","56524067600; 57204975592; 57204977210; 57209008246; 57208585866; 7006589229","Previous high school participation in varsity sport and jump-landing biomechanics in adult recreational athletes","2019","Journal of Athletic Training","54","10","","1089","1094","5","15","10.4085/1062-6050-412-18","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85073624103&doi=10.4085%2f1062-6050-412-18&partnerID=40&md5=c9f806ec516e67da78a4db8437d754ce","Department of Orthopaedics and Rehabilitation, University of Florida, PO Box 112727, Gainesville, 32611, FL, United States; Department of Emergency Medicine, University of South Florida, Tampa, United States; Department of Pediatrics, Stanford University, Palo Alto, CA, United States; College of Medicine, University of Florida, Gainesville, United States","Herman D.C., Department of Orthopaedics and Rehabilitation, University of Florida, PO Box 112727, Gainesville, 32611, FL, United States; Riveros D., Department of Emergency Medicine, University of South Florida, Tampa, United States; Jacobs K., Department of Pediatrics, Stanford University, Palo Alto, CA, United States; Harris A., College of Medicine, University of Florida, Gainesville, United States; Massengill C., College of Medicine, University of Florida, Gainesville, United States; Vincent H.K., Department of Orthopaedics and Rehabilitation, University of Florida, PO Box 112727, Gainesville, 32611, FL, United States","Context: Early sports sampling is associated with superior biomechanics in youth athletes; however, the effect of multisport participation on adult biomechanics is unknown. Objective: To compare jump-landing biomechanics between adult recreational athletes who previously participated in 0, 1, or 2 or more select high school varsity sports (VSs; basketball, lacrosse, soccer, volleyball) that feature landing and cutting tasks. Design: Descriptive laboratory study. Setting: University community setting. Patients or Other Participants: Fifty adult recreational athletes (22 women, 28 men; age = 23.8 ± 2.5 years) with no high school VS experience or with high school VS experience in basketball, lacrosse, soccer, or volleyball. Athletes were grouped into those who participated in 0 (0VS, n = 11), 1 (1VS, n = 21), or 2 or more (2VSs, n = 18) of these sports at the high school level. Main Outcome Measure(s): The average Landing Error Scoring System (LESS) total score from 3 individual jump landings was determined. A 1-way analysis of covariance using sex as the covariate was calculated to compare groups. The Pearson R was used to test for the correlation between the LESS score and number of sports played, and a linear regression analysis was performed using the number of sports played to predict the LESS score. The α level was set a priori at.05. Results: The 0VS athletes produced similar LESS scores as the 1VS athletes (5.89 ± 1.2 versus 5.38 ± 1.93 points, respectively, P =.463), whereas the 2VSs athletes demonstrated lower LESS scores (3.56 ± 1.97 points) than the 0VS (P =.002) and 1VS (P =.004) athletes. The LESS scores were moderately negatively correlated with the number of high school VSs played (R2 = -0.491, P<.001). The linear regression analysis was significant (F1,37 = 9.416, P =.004) with R2 = 0.203. For every additional VS played at the high school level, the LESS score decreased by 1.28 points. Conclusions: Landing Error Scoring System scores were lower in athletes who had a history of multisport high school varsity participation in basketball, lacrosse, soccer, or volleyball compared with those who had a history of single-sport or no participation in these sports at this level. Multisport high school varsity participation in these sports may result in improved neuromuscular performance and potentially reduced injury risks as adults. © by the National Athletic Trainers' Association, Inc","Injury risk; Neuromuscular performance; Sport specialization","Adolescent; Adult; Athletic Performance; Basketball; Biomechanical Phenomena; Female; Humans; Male; Racquet Sports; Recreation; Risk Reduction Behavior; Soccer; Volleyball; Wounds and Injuries; Youth Sports; adolescent; adult; athletic performance; basketball; biomechanics; female; human; injury; male; physiology; racquet sport; recreation; risk reduction; soccer; volleyball; youth sport","Myer G.D., Jayanthi N., DiFiori J.P., Et al., Sport specialization, part I: Does early sports specialization increase negative outcomes and reduce the opportunity for success in young athletes?, Sports Health, 7, 5, pp. 437-442, (2015); Malina R.M., Early sport specialization: Roots, effectiveness, risks, Curr Sports Med Rep, 9, 6, pp. 364-371, (2010); Smucny M., Parikh S.N., Pandya N.K., Consequences of single sport specialization in the pediatric and adolescent athlete, Orthop Clin North Am, 46, 2, pp. 249-258, (2015); Wojtys E.M., Sports specialization vs diversification, Sports Health, 5, 3, pp. 212-213, (2013); Read P.J., Oliver J.L., De Ste Croix M.B., Myer G.D., Lloyd R.S., Neuromuscular risk factors for knee and ankle ligament injuries in Male youth soccer players, Sports Med, 46, 8, pp. 1059-1066, (2016); Howell D.R., Lynall R.C., Buckley T.A., Herman D.C., Neuromuscular control deficits and the risk of subsequent injury after a concussion: A scoping review, Sports Med, 48, 5, pp. 1097-1115, (2018); Hubscher M., Zech A., Pfeifer K., Hansel F., Vogt L., Banzer W., Neuromuscular training for sports injury prevention: A systematic review, Med Sci Sports Exerc, 42, 3, pp. 413-421, (2010); De Blaiser C., Roosen P., Willems T., Danneels L., Bossche L.V., De Ridder R., Is core stability a risk factor for lower extremity injuries in an athletic population? A systematic review, Phys Ther Sport, 30, pp. 48-56, (2018); Padua D.A., DiStefano L.J., Hewett T.E., Et al., National Athletic Trainers' Association position statement: Prevention of anterior cruciate ligament injury, J Athl Train, 53, 1, pp. 5-19, (2018); DiStefano L.J., Beltz E.M., Root H.J., Sport sampling is associated with improved landing technique in youth athletes, Sports Health, 10, 2, pp. 160-168, (2018); Walters B.K., Read C.R., Estes A.R., The effects of resistance training, overtraining, and early specialization on youth athlete injury and development, J Sports Med Phys Fitness, 58, 9, pp. 1339-1348, (2018); Padua D.A., Marshall S.W., Boling M.C., Thigpen C.A., Garrett W.E., Beutler A.I., The Landing Error Scoring System (LESS) is a valid and reliable clinical assessment tool of jump-landing biomechanics: The JUMP-ACL study, Am J Sports Med, 37, 10, pp. 1996-2002, (2009); LaPrade R.F., Agel J., Baker J., Et al., AOSSM early sport specialization consensus statement, Orthop J Sports Med, 4, 4, (2016); Myer G.D., Jayanthi N., DiFiori J.P., Et al., Sports specialization, part II: Alternative solutions to early sport specialization in youth athletes, Sports Health, 8, 1, pp. 65-73, (2016); DiFiori J.P., Gulich A., Brenner J.A., Et al., The NBA and youth basketball: Recommendations for promoting a healthy and positive experience, Sports Med, 48, 9, pp. 2053-2065, (2018); DiStefano L.J., Martinez J.C., Crowley E., Et al., Maturation and sex differences in neuromuscular characteristics of youth athletes, J Strength Cond Res, 29, 9, pp. 2465-2473, (2015); Ford K.R., Shapiro R., Myer G.D., Van Den Bogert A.J., Hewett T.E., Longitudinal sex differences during landing in knee abduction in young athletes, Med Sci Sports Exerc, 42, 10, pp. 1923-1931, (2010); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J Bone Joint Surg Am, 86, 8, pp. 1601-1608, (2004); Rugg C., Kadoor A., Feeley B.T., Pandya N.K., The effects of playing multiple high school sports on National Basketball Association players' propensity for injury and athletic performance, Am J Sports Med, 46, 2, pp. 402-408, (2018); Coyte P.C., Asche C.V., Croxford R., Chan B., The economic cost of musculoskeletal disorders in Canada, Arthritis Care Res, 11, 5, pp. 315-325, (1998); Jakicic J.M., Clark, Coleman E., Et al., American College of Sports Medicine position stand: Appropriate intervention strategies for weight loss and prevention of weight regain for adults, Med Sci Sports Exerc, 33, 12, pp. 2145-2156, (2001); Herman D.C., Barth J.T., Drop-jump landing varies with baseline neurocognition: Implications for anterior cruciate ligament injury risk and prevention, Am J Sports Med, 44, 9, pp. 2347-2353, (2016); Smith H.C., Johnson R.J., Shultz S.J., Et al., A prospective evaluation of the Landing Error Scoring System (LESS) as a screening tool for anterior cruciate ligament injury risk, Am J Sports Med, 40, 3, pp. 521-526, (2012); Dai B., Herman D., Liu H., Garrett W.E., Yu B., Prevention of ACL injury, part I: Injury characteristics, risk factors, and loading mechanism, Res Sports Med, 20, 3-4, pp. 180-197, (2012); Padua D.A., Boling M.C., DiStefano L.J., Onate J.A., Beutler A.I., Marshall S.W., Reliability of the Landing Error Scoring System-real time, a clinical assessment tool of jump-landing biomechanics, J Sport Rehabil, 20, 2, pp. 145-156, (2011); Onate J., Cortes N., Welch C., Van Lunen B.L., Expert versus novice interrater reliability and criterion validity of the Landing Error Scoring System, J Sport Rehabil, 19, 1, pp. 41-56, (2010); Cameron K.L., Peck K.Y., Owens B.D., Et al., Landing Error Scoring System (LESS) items are predictive of lower extremity stress fracture, J Athl Train, 49, pp. S79-S80, (2014); Beese M.E., Joy E., Switzler C.L., Hicks-Little C.A., Landing Error Scoring System differences between single-sport and multi-sport female high school-aged athletes, J Athl Train, 50, 8, pp. 806-811, (2015)","D.C. Herman; Department of Orthopaedics and Rehabilitation, University of Florida, Gainesville, PO Box 112727, 32611, United States; email: hermadc@ortho.ufl.edu","","National Athletic Trainers' Association Inc.","10626050","","JATTE","31633413","English","J. Athl. Train.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85073624103" "Navandar A.; Veiga S.; Torres G.; Chorro D.; Navarro E.","Navandar, Archit (56167078800); Veiga, Santiago (25824489600); Torres, Gonzalo (57204837926); Chorro, David (57204842073); Navarro, Enrique (24449528700)","56167078800; 25824489600; 57204837926; 57204842073; 24449528700","A previous hamstring injury affects kicking mechanics in soccer players","2018","Journal of Sports Medicine and Physical Fitness","58","12","","1815","1822","7","15","10.23736/S0022-4707.18.07852-0","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85057488995&doi=10.23736%2fS0022-4707.18.07852-0&partnerID=40&md5=fde489d1be02efb51c46de23c4d8b666","Faculty of Sports Sciences, Universidad Politécnica de Madrid, C/ Martín Fierro 7, Madrid, 28040, Spain","Navandar A., Faculty of Sports Sciences, Universidad Politécnica de Madrid, C/ Martín Fierro 7, Madrid, 28040, Spain; Veiga S., Faculty of Sports Sciences, Universidad Politécnica de Madrid, C/ Martín Fierro 7, Madrid, 28040, Spain; Torres G., Faculty of Sports Sciences, Universidad Politécnica de Madrid, C/ Martín Fierro 7, Madrid, 28040, Spain; Chorro D., Faculty of Sports Sciences, Universidad Politécnica de Madrid, C/ Martín Fierro 7, Madrid, 28040, Spain; Navarro E., Faculty of Sports Sciences, Universidad Politécnica de Madrid, C/ Martín Fierro 7, Madrid, 28040, Spain","BACKGROUND: Although the kicking skill is influenced by limb dominance and sex, how a previous hamstring injury affects kicking has not been studied in detail. Thus, the objective of this study was to evaluate the effect of sex and limb dominance on kicking in limbs with and without a previous hamstring injury. METHODS: Forty-five professional players (males: N.=19, previously injured players=4, age=21.16±2.00 years; females: N.=19, previously injured players =10, age= 22.15±4.50 years) performed 5 kicks each with their preferred and non-preferred limb at a target 7m away, which were recorded with a three-dimensional motion capture system. Kinematic and kinetic variables were extracted for the backswing, leg cocking, leg acceleration and follow through phases. RESULTS: A shorter backswing (20.20±3.49% vs. 25.64±4.57%), and differences in knee flexion angle (58±10° vs. 72±14°) and hip flexion velocity (8±0 rad/s vs. 10±2 rad/s) were observed in previously injured, non-preferred limb kicks for females. A lower peak hip linear velocity (3.50±0.84 m/s vs. 4.10±0.45 m/s) was observed in previously injured, preferred limb kicks of females. These differences occurred in the backswing and leg-cocking phases where the hamstring muscles were the most active. A variation in the functioning of the hamstring muscles and that of the gluteus maximus and iliopsoas in the case of a previous injury could account for the differences observed in the kicking pattern. CONCLUSIONS: Therefore, the effects of a previous hamstring injury must be considered while designing rehabilitation programs to re-educate kicking movement. © 2017 Edizioni Minerva Medica.","Biomechanical phenomena; Kinetics; Sex characteristics","Acceleration; Adult; Athletic Injuries; Athletic Performance; Biomechanical Phenomena; Female; Hamstring Muscles; Hip; Humans; Male; Movement; Muscle, Skeletal; Range of Motion, Articular; Soccer; Video Recording; Young Adult; acceleration; adult; athletic performance; biomechanics; female; hamstring muscle; hip; human; injuries; joint characteristics and functions; male; movement (physiology); pathophysiology; physiology; skeletal muscle; soccer; sport injury; videorecording; young adult","Ekstrand J., Walden M., Hagglund M., Hamstring injuries have increased by 4% annually in men's professional football, since 2001: A 13-year longitudinal analysis of the UEFA Elite Club injury study, Br J Sports Med, 50, pp. 731-737, (2016); Noya J., Análisis de la incidencia lesional en el fútbol profesional español en la temporada 2008-2009, Universidad Politecnica de Madrid, (2015); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., The football association medical research programme: An audit of injuries in professional football-analysis of hamstring injuries, Br J Sports Med, 38, pp. 36-41, (2004); Petersen J., Holmich P., Evidence based prevention of hamstring injuries in sport, Br J Sports Med, 39, pp. 319-323, (2005); Chumanov E.S., Heiderscheit B.C., Thelen D.G., Hamstring musculotendon dynamics during stance and swing phases of high-speed running, Med Sci Sports Exerc, 43, pp. 525-532, (2011); Lee M.J., Reid S.L., Elliott B.C., Lloyd D.G., Running biomechanics and lower limb strength associated with prior hamstring injury, Med Sci Sports Exerc, 41, pp. 1942-1951, (2009); Schache A.G., Blanch P.D., Dorn T.W., Brown N.A., Rosemond D., Pandy M.G., Effect of running speed on lower limb joint kinetics, Med Sci Sports Exerc, 43, pp. 1260-1271, (2011); Schache A.G., Dorn T.W., Blanch P.D., Brown N.A., Pandy M.G., Mechanics of the human hamstring muscles during sprinting, Med Sci Sports Exerc, 44, pp. 647-658, (2012); 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Lees A., Biomechanics Applied to Soccer Skills, pp. 218-223, (2013); Duhig S.J., Williams M.D., Minett G.M., Opar D., Shield A.J., Drop punt kicking induces eccentric knee flexor weakness associated with reductions in hamstring electromyographic activity, J Sci Med Sport, 20, pp. 595-599, (2017); Navandar A., Gulino M., Antonio R., Navarro E., Effect of hamstring injuries on kicking in soccer using inverse dynamics, Biomecánica, 21, pp. 7-19, (2013); Opar D.A., Williams M.D., Timmins R.G., Hickey J., Duhig S.J., Shield A.J., Eccentric hamstring strength and hamstring injury risk in Australian footballers, Med Sci Sports Exerc, 47, pp. 857-865, (2015); Croisier J.L., Ganteaume S., Binet J., Genty M., Ferret J.M., Strength imbalances and prevention of hamstring injury in professional soccer players: A prospective study, Am J Sports Med, 36, pp. 1469-1475, (2008); Greig M., Siegler J.C., Soccer-specific fatigue and eccentric hamstrings muscle strength, J Athl Train, 44, pp. 180-184, (2009); 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Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, J Sports Sci Med, 1, pp. 72-79, (2002); Daneshjoo A., Rahnama N., Mokhtar A.H., Yusof A., Bilateral and unilateral asymmetries of isokinetic strength and flexibility in male young professional soccer players, J Hum Kinet, 36, pp. 45-53, (2013); Sinclair J., Fewtrell D., Taylor P.J., Atkins S., Bottoms L., Hobbs S.J., Three-dimensional kinematic differences between the preferred and non-preferred limbs during maximal instep soccer kicking, J Sports Sci, 32, pp. 1914-1923, (2014); Fousekis K., Tsepis E., Vagenas G., Lower limb strength in professional soccer players: Profile, asymmetry, and training age, J Sports Sci Med, 9, pp. 364-373, (2010); Reid M., Elliott B., Alderson J., Shoulder joint loading in the high performance flat and kick tennis serves, Br J Sports Med, 41, pp. 884-889, (2007); Woltring H., On optimal smoothing and derivate estimation from noisy displacement data in biomechanics, Hum Mov Sci, 4, pp. 229-245, (1985); 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Myer G.D., Chu D.A., Brent J.L., Hewett T.E., Trunk and hip control neuromuscular training for the prevention of knee joint injury, Clin Sports Med, 27, pp. 425-448, (2008); Padulo J., Attene G., Ardigo L.P., Bragazzi N.L., Maffulli N., Zagatto A.M., Et al., Can a Repeated Sprint Ability Test Help Clear a Previously Injured Soccer Player for Fully Functional Return to Activity? APilot Study, Clin J Sport Med, 27, pp. 361-368, (2017); Van Der Horst N., Backx F., Goedhart E.A., Huisstede B.M., Return to play after hamstring injuries in football (soccer): A worldwide Delphi procedure regarding definition, medical criteria and decision-making, Br J Sports Med, 51, pp. 1583-1591, (2017); Heiderscheit B.C., Sherry M.A., Silder A., Chumanov E.S., Thelen D.G., Hamstring strain injuries: Recommendations for diagnosis, rehabilitation, and injury prevention, J Orthop Sports Phys Ther, 40, pp. 67-81, (2010); Lees A., Nolan L., The biomechanics of soccer: A review, J Sports Sci, 16, pp. 211-234, (1998); Juarez D., Lopez De Subijana C., Mallo J., Navarro E., Acute effects of endurance exercise on jumping and kicking performance in top-class young soccer players, Eur J Sport Sci, 11, pp. 191-196, (2011); Sole G., Milosavljevic S., Nicholson H., Sullivan S.J., Altered muscle activation following hamstring injuries, Br J Sports Med, 46, pp. 118-123, (2012); Ball K.A., Kinematic comparison of the preferred and non-preferred foot punt kick, J Sports Sci, 29, pp. 1545-1552, (2011); Gil S., Gil J., Ruiz F., Irazusta A., Irazusta J., Anthropometrical characteristics and somatotype of young soccer players and their comparison with the general population, Biol Sport, 27, pp. 17-24, (2010)","A. Navandar; Faculty of Sports Sciences, Universidad Politécnica de Madrid, Madrid, C/ Martín Fierro 7, 28040, Spain; email: archit.navandar@upm.es","","Edizioni Minerva Medica","00224707","","JMPFA","29327823","English","J. Sports Med. Phys. Fitness","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85057488995" "Norouzi S.; Esfandiarpour F.; Mehdizadeh S.; Yousefzadeh N.K.; Parnianpour M.","Norouzi, Sadegh (55857538300); Esfandiarpour, Fateme (36113301000); Mehdizadeh, Sina (35201852100); Yousefzadeh, Nasim Kiani (57211487720); Parnianpour, Mohamad (7005310614)","55857538300; 36113301000; 35201852100; 57211487720; 7005310614","Lower extremity kinematic analysis in male athletes with unilateral anterior cruciate reconstruction in a jump-landing task and its association with return to sport criteria","2019","BMC Musculoskeletal Disorders","20","1","492","","","","12","10.1186/s12891-019-2893-5","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85074171980&doi=10.1186%2fs12891-019-2893-5&partnerID=40&md5=f1e6fc3ce6eb5f6b612c0f73a7607c6f","Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Department of Family Medicine, University of Alberta, Edmonton, Canada; Toronto Rehabilitation Institute, University of Health Network, Toronto, Canada; Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran","Norouzi S., Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Esfandiarpour F., Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran, Department of Family Medicine, University of Alberta, Edmonton, Canada; Mehdizadeh S., Toronto Rehabilitation Institute, University of Health Network, Toronto, Canada; Yousefzadeh N.K., Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Parnianpour M., Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran","Background: Return to sport (RTS) criteria are widely being used to identify anterior cruciate ligament reconstructed (ACLR) athletes ready to return to sportive activity and reduce risk of ACL re-injury. However, studies show a high rate of ACL re-injury in athletes who passed RTS criteria. This indicates that the current RTS criteria might not be sufficient to determine return to sport time in ACLR athletes. Previous studies have reported a close association between altered lower limb kinematics and ACL re-injury. However, it is not clear how lower extremity kinematics differs between ACLR athletes who passed the RTS-criteria and who failed. This study compared lower extremity kinematics in a jump-landing task between ACLR athletes who passed the RTS criteria (Limb symmetry in hop tests, quadriceps strength and questionnaires) to those who failed and to the healthy individuals. Methods: Participants were 27 male football players with unilateral ACLR including 14 who passed-RTS criteria and 13 failed, and 15 healthy football players. A 3D motion capture system recorded participants' lower extremity motion while performing 10 trials of a bilateral jump-landing task. Hip, knee and ankle angular motion were examined at initial contact. Two-way mixed analysis of variances (2 limbs × 3 groups) and Bonferroni post-hoc tests were performed to compare the joint angles between the limbs and groups. Results: Lower hip abduction angle was found in the failed (involved limb 4.1 ° ± 4.2) and passed RTS (involved limb 6.8° ± 3.3) groups compared to the healthy group (non-dominant limb 10.7° ± 3.7). Ankle inversion in the failed RTS (0.4° ± 4.9) group was significantly lower than both passed RTS (4.8° ± 4.8, p = 0.05) and healthy (8.2° ± 8.1, p < 0.001) groups. There were no significant differences between the groups in knee kinematics. Conclusions: Our findings indicate reduced hip abduction during initial contact phase of landing in athletes returned to sport. Reduced hip abduction during the complex multiplanar movement of jump-landing is a risk factor for ACL re-injury. Current RTS criteria may not be sufficient to identify ACLR athletes at high risk of re-injury. The kinematic analysis in conjunction with current RTS criteria can provide additional insight into the return to sport decision making. © 2019 The Author(s).","Anterior cruciate ligament; Clinical decision-making, soccer; Landing kinematics; Return to sport","Adult; Anterior Cruciate Ligament Injuries; Anterior Cruciate Ligament Reconstruction; Athletes; Biomechanical Phenomena; Cross-Sectional Studies; Humans; Knee Joint; Male; Muscle Strength; Recovery of Function; Recurrence; Return to Sport; Soccer; Treatment Outcome; Young Adult; adult; anterior cruciate ligament injury; anterior cruciate ligament reconstruction; Article; athlete; clinical article; clinical effectiveness; controlled study; female; football player; human; kinematics; lower limb; male; muscle strength; outcome assessment; quadriceps femoris muscle; return to sport; young adult; biomechanics; convalescence; cross-sectional study; injury; knee; pathophysiology; physiology; recurrent disease; return to sport; soccer; treatment outcome","Paschos N.K., Howell S.M., Anterior cruciate ligament reconstruction: Principles of treatment, EFORT Open Rev, 1, 11, pp. 398-408, (2016); Bien D.P., Dubuque T.J., Considerations for late stage acl rehabilitation and return to sport to limit re-injury risk and maximize athletic performance, Int J Sports Phys Ther., 10, 2, pp. 256-271, (2015); Creighton D.W., Shrier I., Shultz R., Meeuwisse W.H., Matheson G.O., Return-to-play in sport: A decision-based model, Clin J Sport Med, 20, 5, pp. 379-385, (2010); Grindem H., Snyder-Mackler L., Moksnes H., Engebretsen L., Risberg M.A., Simple decision rules can reduce reinjury risk by 84% after ACL reconstruction: The Delaware-Oslo ACL cohort study, Br J Sports Med, 50, 13, pp. 804-808, (2016); Di Stasi S.L., Logerstedt D., Gardinier E.S., Snyder-Mackler L., Gait patterns differ between ACL-reconstructed athletes who pass return-to-sport criteria and those who fail, Am J Sports Med, 41, 6, pp. 1310-1318, (2013); Wiggins A.J., Grandhi R.K., Schneider D.K., Stanfield D., Webster K.E., Myer G.D., Risk of secondary injury in younger athletes after anterior cruciate ligament reconstruction: A systematic review and meta-analysis, Am J Sports Med, 44, 7, pp. 1861-1876, (2016); Pinczewski L.A., Lyman J., Salmon L.J., Russell V.J., Roe J., Linklater J., A 10-year comparison of anterior cruciate ligament reconstructions with hamstring tendon and patellar tendon autograft: A controlled, prospective trial, Am J Sports Med, 35, 4, pp. 564-574, (2007); Paterno M.V., Schmitt L.C., Ford K.R., Rauh M.J., Myer G.D., Huang B., Et al., Biomechanical measures during landing and postural stability predict second anterior cruciate ligament injury after anterior cruciate ligament reconstruction and return to sport, Am J Sports Med, 38, 10, pp. 1968-1978, (2010); Padua D.A., DiStefano L.J., Beutler A.I., De La Motte S.J., DiStefano M.J., Marshall S.W., The landing error scoring system as a screening tool for an anterior cruciate ligament injury-prevention program in elite-youth soccer athletes, J Athl Train, 50, 6, pp. 589-595, (2015); Smith H.C., Vacek P., Johnson R.J., Slauterbeck J.R., Hashemi J., Shultz S., Et al., Risk factors for anterior cruciate ligament injury: A review of the literature-part 1: Neuromuscular and anatomic risk, Sports Health., 4, 1, pp. 69-78, (2012); Leppanen M., Pasanen K., Krosshaug T., Kannus P., Vasankari T., Kujala U.M., Et al., Sagittal plane hip, knee, and ankle biomechanics and the risk of anterior cruciate ligament injury: A prospective study, Orthop J Sports Med., 5, 12, (2017); Kyritsis P., Bahr R., Landreau P., Miladi R., Witvrouw E., Infographic. 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Meinerz C.M., Malloy P., Geiser C.F., Kipp K., Anticipatory effects on lower extremity Neuromechanics during a cutting task, J Athl Train, 50, 9, pp. 905-913, (2015); Kim J.H., Lee K.K., Kong S.J., An K.O., Jeong J.H., Lee Y.S., Effect of anticipation on lower extremity biomechanics during side- A nd cross-cutting maneuvers in young soccer players, Am J Sports Med, 42, 8, pp. 1985-1992, (2014)","F. Esfandiarpour; Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; email: fateme@ualberta.ca","","BioMed Central Ltd.","14712474","","","31656192","English","BMC Musculoskelet. Disord.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85074171980" "Arastoo A.A.; Aghdam E.M.; Habibi A.H.; Zahednejad S.","Arastoo, Ali Asghar (26653396100); Aghdam, Esmaeil Moharrami (56200483100); Habibi, Abdoul Hamid (56200648900); Zahednejad, Shahla (54379367200)","26653396100; 56200483100; 56200648900; 54379367200","Kinetic factors of vertical jumping for heading a ball in flexible flatfooted amateur soccer players with and without insole adoption","2014","Prosthetics and Orthotics International","38","3","","204","210","6","15","10.1177/0309364613492790","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902200544&doi=10.1177%2f0309364613492790&partnerID=40&md5=1482e25a13df462466b20bf838518f8f","Musculoskeletal Rehabilitation Research Center, Department of Physical Therapy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Tabriz Islamic Azad University, Tabriz, Iran; Faculty of Physical Education and Sport Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran","Arastoo A.A., Musculoskeletal Rehabilitation Research Center, Department of Physical Therapy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Aghdam E.M., Tabriz Islamic Azad University, Tabriz, Iran; Habibi A.H., Faculty of Physical Education and Sport Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran; Zahednejad S., Musculoskeletal Rehabilitation Research Center, Department of Physical Therapy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran","Background: According to literature, little is known regarding the effects of orthotic management of flatfoot on kinetics of vertical jump. Objectives: To compare the kinetic and temporal events of two-legged vertical jumping take-off from a force plate for heading a ball in normal and flexible flatfoot subjects with and without insole. Study design: A functional based interventional controlled study. Methods: Random sampling method was employed to draw a control group of 15 normal foot subjects to a group of 15 flatfoot subjects. A force platform was used to record kinetics of two-legged vertical jump shots. Results: Results indicate that insole did not lead to a significant effect on kinetics regarding anterior-posterior and mediolateral directions (p > 0.05). Results of kinetics related to vertical direction for maximum force due to take-off and stance duration revealed significant differences between the normal and flexible flatfoot subjects without insole (p < 0.05) and no significant differences between the normal foot and flexible flatfoot subjects with insole adoption (p > 0.05). Conclusions: These results suggest that the use of an insole in the flexible flatfoot subjects led to improved stance time and decrease of magnitude of kinetics regarding vertical direction at take-off as the main feature of two-legged vertical jumping function. © The International Society for Prosthetics and rthotics 2013.","Flexible flatfoot; Ground reaction force; Insole; Kinetics; Temporal factors; Vertical jumping function","Adult; Athletes; Flatfoot; Foot Orthoses; Humans; Male; Movement; Muscle, Skeletal; Soccer; Young Adult; adult; article; athlete; biomechanics; body weight; clinical article; controlled study; flatfoot; foot; foot orthosis; foot sole support; football; ground reaction force; human; human experiment; jumping; kinetics; male; motion analysis system; orthopedic shoe; standing; athlete; controlled clinical trial; flatfoot; movement (physiology); physiology; skeletal muscle; soccer; young adult","Lee M.S., Vanore J.V., Thomas J.L., Et al., Diagnosis and treatment of adult flatfoot, J Foot Ankle Surg, 44, 2, pp. 78-113, (2005); Lin C.J., Lai K.A., Kuan T.S., Et al., Correlating factors and clinical significance of flexible flatfoot in preschool children, J Pediatr Orthop, 21, 3, pp. 378-382, (2001); Harris R.J., Beath T., Army foot survey, 1, pp. 1-268, (1947); Mosca V.S., Flexible flatfoot in children and adolescents, J Child Orthop, 4, pp. 107-121, (2010); Wong P.L., Chamari K., Maode W., Et al., Higher pressure on the medial side in four soccer-related movements, Br J Sports Med, 41, 2, pp. 93-100, (2007); James S.L., Baten B.T., Ostering L.R., Injuries to runners, Am J Sports Med, 6, pp. 40-50, (1978); Leung A.K.L., Mak A.F.T., Evans J.H., Biomechanical gait evaluation of the immediate effect of orthotic treatment for flexible flatfoot, Prosthet Orthot Int, 22, pp. 25-34, (1998); Wasik J., Physical parameters of the rising kick in taekwon-do, Arch Budo, 2, pp. 28-30, (2006); Makaruk H., Sacewicz T., Effects plyometric training on maximal power output and jumping ability, Hum Mov, 11, 1, pp. 17-22, (2010); Magee D.J., Orthopedic physical assessment enhanced edition, 4th Ed. St Louis Mo: Saunders Elsevier, pp. 783-784, (2006); Sargent D.A., The physical test of a man, Am Phys Educ Rev, 26, pp. 188-194, (1921); Neumann D.A., Kinesiology of the musculoskeletal system -foundation for physical rehabilitation, St. Louis, MO: Mosby Inc, pp. 551-554, (2002); Perry J., Gait analysis -normal and pathologic function, Canada: McGraw-Hill Ryerson Limited, pp. 415-418, (1992); Linthrone N.P., Analysis of standing vertical jumps using a force platform, Am J Phys, 69, 11, pp. 1198-1204, (2001); Arastoo A.A., Biomechanical and physiological characterization of locomotor impairment, Bioengineering Unit, pp. 121-122, (1992); Kim C.S., Park S., Ahn S., Et al., Kinematics and kinetics differences between normal-and flat-arched foot posture during landing, Gait Posture, 36, (2012); Medved V., Measurement of human locomotion, pp. 142-144, (2001); D'Ambrosia R.D., Orthotics devices in running injuries, Clin Sports Med, 4, pp. 611-618, (1985); Imhauser C.W., Abidi N.A., Frankel D.Z., Et al., Biomechanical evaluation of the efficacy of external stabilizers in the conservative treatment of acquired flatfoot deformity, Foot Ankle Int, 23, 8, pp. 727-737, (2002); Prapavessis H., McNair P.J., Effects of instruction in jumping technique and experience jumping on ground reaction forces, J Orthop Sports Phys Ther, 29, 6, pp. 352-356, (1999)","S. Zahednejad; Musculoskeletal Rehabilitation Research Center, Department of Physical Therapy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; email: drshzahed@yahoo.co.uk","","SAGE Publications Ltd","03093646","","POIND","23828877","English","Prosthet. Orthot. Int.","Article","Final","","Scopus","2-s2.0-84902200544" "Di Paolo S.; Nijmeijer E.; Bragonzoni L.; Dingshoff E.; Gokeler A.; Benjaminse A.","Di Paolo, Stefano (57209464265); Nijmeijer, Eline (57761508700); Bragonzoni, Laura (7801511871); Dingshoff, Evelien (57761462200); Gokeler, Alli (6603151338); Benjaminse, Anne (13404499900)","57209464265; 57761508700; 7801511871; 57761462200; 6603151338; 13404499900","Comparing lab and field agility kinematics in young talented female football players: Implications for ACL injury prevention","2023","European Journal of Sport Science","23","5","","859","868","9","14","10.1080/17461391.2022.2064771","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85132649697&doi=10.1080%2f17461391.2022.2064771&partnerID=40&md5=fe6ba3d79205f394456f3352945b1801","Department for Life Quality Studies, University of Bologna, Bologna, Italy; Department of Human Movement Sciences, University Medical Center Groningen, University of Groningen, Groningen, Netherlands; Exercise and Neuroscience unit, Department Exercise & Health, Faculty of Science, Paderborn University, Paderborn, Germany; Amsterdam Collaboration for Health and Safety in Sports, Department of Public and Occupational Health, Amsterdam Movement Sciences, VU University Medical Center, Amsterdam, Netherlands; OCON Centre for Orthopaedic Surgery and Sports Medicine Clinic, Hengelo, Netherlands; School of Sport Studies, Hanze University Groningen, Groningen, Netherlands","Di Paolo S., Department for Life Quality Studies, University of Bologna, Bologna, Italy; Nijmeijer E., Department of Human Movement Sciences, University Medical Center Groningen, University of Groningen, Groningen, Netherlands; Bragonzoni L., Department for Life Quality Studies, University of Bologna, Bologna, Italy; Dingshoff E., Department of Human Movement Sciences, University Medical Center Groningen, University of Groningen, Groningen, Netherlands; Gokeler A., Exercise and Neuroscience unit, Department Exercise & Health, Faculty of Science, Paderborn University, Paderborn, Germany, Amsterdam Collaboration for Health and Safety in Sports, Department of Public and Occupational Health, Amsterdam Movement Sciences, VU University Medical Center, Amsterdam, Netherlands, OCON Centre for Orthopaedic Surgery and Sports Medicine Clinic, Hengelo, Netherlands; Benjaminse A., Department of Human Movement Sciences, University Medical Center Groningen, University of Groningen, Groningen, Netherlands, School of Sport Studies, Hanze University Groningen, Groningen, Netherlands","Modifiable (biomechanical and neuromuscular) anterior cruciate ligament (ACL) injury risk factors have been identified in laboratory settings. These risk factors were subsequently used in ACL injury prevention measures. Due to the lack of ecological validity, the use of on-field data in the ACL injury risk screening is increasingly advocated. Though, the kinematic differences between laboratory and on-field settings have never been investigated. The aim of the present study was to investigate the lower-limb kinematics of female footballers during agility movements performed both in laboratory and football field environments. Twenty-eight healthy young female talented football (soccer) players (14.9 ± 0.9 years) participated. Lower-limb joint kinematics was collected through wearable inertial sensors (Xsens Link) in three conditions: (1) laboratory setting during unanticipated sidestep cutting at 40-50°; on the football pitch (2) football-specific exercises (F-EX) and (3) football games (F-GAME). A hierarchical two-level random effect model in Statistical Parametric Mapping was used to compare joint kinematics among the conditions. Waveform consistency was investigated through Pearson’s correlation coefficient and standardized z-score vector. In-lab kinematics differed from the on-field ones, while the latter were similar in overall shape and peaks. Lower sagittal plane range of motion, greater ankle eversion, and pelvic rotation were found for on-field kinematics (p < 0.044). The largest differences were found during landing and weight acceptance. The biomechanical differences between lab and field settings suggest the application of context-related adaptations in female footballers and have implications in ACL injury prevention strategies. Highlights Talented youth female football players showed kinematical differences between the lab condition and the on-field ones, thus adopting a context-related motor strategy. Lower sagittal plane range of motion, greater ankle eversion, and pelvic rotation were found on the field. Such differences pertain to the ACL injury mechanism and prevention strategies. Preventative training should support the adoption of non-linear motor learning to stimulate greater self-organization and adaptability. It is recommended to test football players in an ecological environment to improve subsequent primary ACL injury prevention programmes. © 2022 European College of Sport Science.","ACL; female football; field; IMU; kinematics; laboratory","Adolescent; Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Female; Football; Humans; Knee Joint; Lower Extremity; Soccer; adolescent; anterior cruciate ligament injury; biomechanics; female; football; human; knee; lower limb; soccer","Agel J., Rockwood T., Klossner D., Collegiate ACL injury rates across 15 sports: National collegiate athletic association injury surveillance system data update (2004-2005 through 2012-2013), Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine, 26, 6, pp. 518-523, (2016); Alentorn-Geli E., Myer G.D., Silvers H.J., Samitier G., Romero D., Lazaro-Haro C., Cugat R., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: Mechanisms of injury and underlying risk factors, Knee Surgery, Sports Traumatology, Arthroscopy, 17, 7, pp. 705-729, (2009); Beck N.A., Lawrence J.T.R., Nordin J.D., DeFor T.A., Tompkins M., ACL Tears in school-aged children and adolescents over 20 years, Pediatrics, 139, 3, (2017); Besier T.F., Lloyd D.G., Ackland T.R., Cochrane J.L., Anticipatory effects on knee joint loading during running and cutting maneuvers, Medicine and Science in Sports and Exercise, 33, 7, pp. 1176-1181, (2001); Bolt R., Heuvelmans P., Benjaminse A., Robinson M.A., Gokeler A., An ecological dynamics approach to ACL injury risk research: A current opinion, Sports Biomechanics, pp. 1-14, (2021); Buckthorpe M., Della Villa F., Della Villa S., Roi G.S., On-field rehabilitation part 1: 4 pillars of high-quality on-field rehabilitation are restoring movement quality, physical conditioning, restoring sport-specific skills, and progressively developing chronic training load, Journal of Orthopaedic & Sports Physical Therapy, 49, 8, pp. 565-569, (2019); Chaaban C.R., Berry N.T., Armitano-Lago C., Kiefer A.W., Mazzoleni M.J., Padua D.A., Combining inertial sensors and machine learning to predict vGRF and knee biomechanics during a double limb jump landing task, Sensors (Basel, Switzerland), 21, 13, (2021); Della Villa F., Buckthorpe M., Grassi A., Nabiuzzi A., Tosarelli F., Zaffagnini S., Della Villa S., Systematic video analysis of ACL injuries in professional male football (soccer): Injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, (2020); Della Villa F., Di Paolo S., Santagati D., Della Croce E., Lopomo N.F., Grassi A., Zaffagnini S., A 2D video-analysis scoring system of 90° change of direction technique identifies football players with high knee abduction moment, Knee Surgery, Sports Traumatology, Arthroscopy, (2021); DiCesare C.A., Kiefer A.W., Bonnette S., Myer G.D., High-Risk lower-extremity biomechanics evaluated in simulated soccer-specific virtual environments, Journal of Sport Rehabilitation, 29, 3, pp. 294-300, (2020); Di Paolo S., Lopomo N.F., Della Villa F., Paolini G., Figari G., Bragonzoni L., Zaffagnini S., Rehabilitation and return to sport assessment after anterior cruciate ligament injury: Quantifying joint kinematics during complex high-speed tasks through wearable sensors, Sensors, 21, 7, (2021); Di Paolo S., Zaffagnini S., Pizza N., Grassi A., Bragonzoni L., Poor motor coordination elicits altered lower limb biomechanics in young football (soccer) players: Implications for injury prevention through wearable sensors, Sensors (Basel, Switzerland), 21, 13, (2021); Di Paolo S., Zaffagnini S., Tosarelli F., Aggio F., Bragonzoni L., Grassi A., Della Villa F., A 2D qualitative movement assessment of a deceleration task detects football players with high knee joint loading, Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA, (2021); Dos'Santos T., McBurnie A., Donelon T., Thomas C., Comfort P., Jones P.A., A qualitative screening tool to identify athletes with “high-risk” movement mechanics during cutting: The cutting movement assessment score (CMAS), Physical Therapy in Sport: Official Journal of the Association of Chartered Physiotherapists in Sports Medicine, 38, pp. 152-161, (2019); Dos'Santos T., Thomas C., Jones P.A., The effect of angle on change of direction biomechanics: Comparison and inter-task relationships, Journal of Sports Sciences, pp. 1-14, (2021); Giarmatzis G., Zacharaki E.I., Moustakas K., Real-time prediction of joint forces by motion capture and machine learning, Sensors (Basel, Switzerland), 20, 23, (2020); Hamill J., Palmer C., Van Emmerik R.E.A., Coordinative variability and overuse injury, Sports Medicine, Arthroscopy, Rehabilitation, Therapy & Technology: SMARTT, 4, 1, (2012); Hewett T.E., Myer G.D., Kiefer A.W., Ford K.R., Longitudinal increases in knee abduction moments in females during adolescent growth, Medicine and Science in Sports and Exercise, 47, 12, pp. 2579-2585, (2015); Koga H., Bahr R., Myklebust G., Engebretsen L., Grund T., Krosshaug T., Estimating anterior tibial translation from model-based image-matching of a noncontact anterior cruciate ligament injury in Professional football: A case report, Clinical Journal of Sport Medicine, 21, 3, pp. 271-274, (2011); Kotsifaki A., Korakakis V., Graham-Smith P., Sideris V., Whiteley R., Vertical and horizontal hop performance: Contributions of the hip, knee, and ankle, Sports Health, 13, 2, pp. 128-135, (2021); Lloyd D., The future of in-field sports biomechanics: Wearables plus modelling compute real-time in vivo tissue loading to prevent and repair musculoskeletal injuries, Sports Biomechanics, pp. 1-29, (2021); Lucarno S., Zago M., Buckthorpe M., Grassi A., Tosarelli F., Smith R., Della Villa F., Systematic video analysis of anterior cruciate ligament injuries in professional female soccer players, The American Journal of Sports Medicine, (2021); MacAlpine E.M., Talwar D., Storey E.P., Doroshow S.M., Lawrence J.T.R., Weight gain after ACL reconstruction in pediatric and adolescent patients, Sports Health, 12, 1, pp. 29-35, (2020); Mohammadi Orangi B., Yaali R., Bahram A., Aghdasi M.T., van der Kamp J., Vanrenterghem J., Jones P.A., Motor learning methods that induce high practice variability reduce kinematic and kinetic risk factors of non-contact ACL injury, Human Movement Science, 78, (2021); Myer G.D., Ford K.R., Di Stasi S.L., Foss K.D.B., Micheli L.J., Hewett T.E., High knee abduction moments are common risk factors for patellofemoral pain (PFP) and anterior cruciate ligament (ACL) injury in girls: Is PFP itself a predictor for subsequent ACL injury?, British Journal of Sports Medicine, 49, 2, pp. 118-122, (2015); Otte F.W., Davids K., Millar S.-K., Klatt S., Understanding how athletes learn: Integrating skill training concepts, Theory and Practice from an Ecological Perspective, 7, (2021); Pataky T.C., Vanrenterghem J., Robinson M.A., Zero- vs. One-dimensional, parametric vs. Non-parametric, and confidence interval vs. Hypothesis testing procedures in one-dimensional biomechanical trajectory analysis, Journal mof Biomechanics, 48, 7, pp. 1277-1285, (2015); Paterno M.V., Kiefer A.W., Bonnette S., Riley M.A., Schmitt L.C., Ford K.R., Hewett T.E., Prospectively identified deficits in sagittal plane hip-ankle coordination in female athletes who sustain a second anterior cruciate ligament injury after anterior cruciate ligament reconstruction and return to sport, Clinical Biomechanics (Bristol, Avon), 30, 10, pp. 1094-1101, (2015); Robert-Lachaine X., Mecheri H., Larue C., Plamondon A., Validation of inertial measurement units with an optoelectronic system for whole-body motion analysis, Medical & Biological Engineering & Computing, 55, 4, pp. 609-619, (2017); Rousseeuw P.J., Hubert M., Anomaly detection by robust statistics, WIRES Data Mining and Knowledge Discovery, 8, 2, (2018); Sanders T.L., Maradit Kremers H., Bryan A.J., Larson D.R., Dahm D.L., Levy B.A., Krych A.J., Incidence of anterior cruciate ligament tears and reconstruction: A 21-year population-based study, The American Journal of Sports Medicine, 44, 6, pp. 1502-1507, (2016); Schreurs M.J., Benjaminse A., Lemmink K.A.P.M., Sharper angle, higher risk? The effect of cutting angle on knee mechanics in invasion sport athletes, Journal of Biomechanics, 63, pp. 144-150, (2017); Sigurdsson H.B., Karlsson J., Snyder-Mackler L., Briem K., Kinematics observed during ACL injury are associated with large early peak knee abduction moments during a change of direction task in healthy adolescents, Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society, (2020); Silvers-Granelli H., Why female athletes injure their ACL’s more frequently? What can we do to mitigate their risk?, International Journal of Sports Physical Therapy, 16, 4, pp. 971-977, (2021); Slauterbeck J.R., Choquette R., Tourville T.W., Krug M., Mandelbaum B.R., Vacek P., Beynnon B.D., Implementation of the FIFA 11+ injury prevention program by high school athletic teams did not reduce lower extremity injuries: A cluster randomized controlled trial, The American Journal of Sports Medicine, 47, 12, pp. 2844-2852, (2019); Taborri J., Molinaro L., Santospagnuolo A., Vetrano M., Vulpiani M.C., Rossi S., A machine-learning approach to measure the anterior cruciate ligament injury risk in female basketball players, Sensors (Basel, Switzerland), 21, 9, (2021); van der Kruk E., Reijne M.M., Accuracy of human motion capture systems for sport applications; state-of-the-art review, European Journal of Sport Science, 18, 6, pp. 806-819, (2018); Weinhandl J.T., O'Connor K.M., Influence of ground reaction force perturbations on anterior cruciate ligament loading during sidestep cutting, Computer Methods in Biomechanics and Biomedical Engineering, 20, 13, pp. 1394-1402, (2017); Weir G., Alderson J., Smailes N., Elliott B., Donnelly C., A reliable video-based ACL injury screening tool for female team sport athletes, International Journal of Sports Medicine, 40, 3, pp. 191-199, (2019); Weir G., van Emmerik R., Jewell C., Hamill J., Coordination and variability during anticipated and unanticipated sidestepping, Gait & Posture, 67, pp. 1-8, (2019)","S. Di Paolo; Department for Life Quality Studies, University of Bologna, Bologna, Via di Barbiano 1/10, Italy; email: stefano.dipaolo@ior.it","","Taylor and Francis Ltd.","17461391","","","35400311","English","Eur. J. Sport Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85132649697" "Peacock J.C.A.; Ball K.","Peacock, James C. A. (57193082900); Ball, Kevin (7101771783)","57193082900; 7101771783","Strategies to improve impact efficiency in football kicking","2019","Sports Biomechanics","18","6","","608","621","13","12","10.1080/14763141.2018.1452970","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85047179850&doi=10.1080%2f14763141.2018.1452970&partnerID=40&md5=3c5cc4e355ca23e8b561cba88204f976","Institute for Health and Sport, Victoria University, Melbourne, Australia","Peacock J.C.A., Institute for Health and Sport, Victoria University, Melbourne, Australia; Ball K., Institute for Health and Sport, Victoria University, Melbourne, Australia","In football, kicking with high ball velocity can increase scoring opportunities and reduce the likelihood of interception. Efficient energy transfer from foot to ball during impact is important to attain a high ball velocity. It is considered impact efficiency can be increased by reducing the change in ankle plantarflexion during foot–ball impact. However, conflicting evidence exists, questioning its effectiveness as a coaching cue. The aim of the present study was to systematically analyse joint stiffness, foot velocity and impact location with a mechanical kicking machine to determine if change in ankle plantarflexion during foot–ball impact and ball velocity are influenced. Sagittal plane data of the shank, foot and ball were measured using high-speed video (4,000 Hz). Increasing joint stiffness reduced change in ankle plantarflexion and increased ball velocity from a greater effective mass. Increasing foot velocity increased change in ankle plantarflexion and increased ball velocity. Distal impact locations increased change in ankle plantarflexion and reduced ball velocity as coefficient of restitution decreased. These results identify that change in ankle plantarflexion is a dependent variable during foot–ball impact and does not directly influence ball velocity. Coaches can assess ankle motion during impact to provide feedback to athletes on their impact efficiency. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.","coaching football kicking; drop punt; Joint rigidity; kicking technique; soccer","Ankle; Biomechanical Phenomena; Efficiency; Energy Transfer; Foot; Humans; Motor Skills; Range of Motion, Articular; Soccer; Sports Equipment; Time and Motion Studies; ankle; biomechanics; energy transfer; foot; human; joint characteristics and functions; motor performance; physiology; productivity; soccer; sports equipment; task performance","Andersen T.B., Dorge H.C., Thomsen F.I., Collisions in soccer kicking, Sports Engineering, 2, pp. 121-125, (1999); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Ball K., Smith J., MacMahon C., Kick impact characteristics of junior kickers, Proceedings of the 28th International Conference on Biomechanics in Sports, (2010); Hayes G.J., Numerical approximation to functions and data, (1970); Ishii H., Yanagiya T., Naito H., Katamoto S., Maruyama T., Theoretical study of factors affecting ball velocity in instep soccer kicking, Journal of Applied Biomechanics, 28, pp. 258-270, (2012); Kellis E., Katis A., Biomechaincal characteristics and determinants of instep soccer kick, Journal of Sports Science and Medicine, 6, pp. 154-165, (2007); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (1998); Nunome H., IkegamI I., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 24, pp. 529-541, (2006); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, Journal of Sports Sciences, 24, pp. 11-22, (2006); Peacock J., Ball K., The impact phase of drop punt kicking: Validation and experimental data of a mechanical kicking limb, Paper presented at the 34th International Conference on Biomechanics in Sports, (2016); Peacock J., Ball K., The relationship between foot-ball impact and flight characteristics in punt kicking, Sports Engineering, 20, pp. 221-230, (2017); Peacock J., Ball K., Taylor S., The impact phase of drop punt kicking for maximal distance and accuracy, Journal of Sports Sciences, 35, pp. 2289-2296, (2017); Shinkai H., Nunome H., Isokawa M., Ikegami Y., Ball impact dynamics of instep soccer kicking, Medicine & Science in Sports & Exercise, 41, pp. 889-897, (2009); Shinkai H., Nunome H., Suito H., Inoue K., Ikegami Y., Cross-sectional change of ball impact in instep kicks from junior to professional footballers, Science and football VII: The proceedings of the Seventh World Congress on Science and Football, pp. 27-32, (2013); Smith J., Ball K., MacMahon C., Foot-to-ball interaction in preferred and non-preferred leg Australian rules kicking, Paper presented at the 27th International Conference on Biomechanics in Sports, (2009); Sterzing T., Kroiher J., Hennig E., Kicking velocity: Barefoot kicking superior to shod kicking?, Science and Football VI: The Proceedings of the Sixth World Congress on Science and Football, pp. 50-56, (2009)","J.C.A. Peacock; Institute for Health and Sport, Victoria University, Melbourne, Australia; email: james.peacock@live.vu.edu.au","","Routledge","14763141","","","29785871","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-85047179850" "Akins J.S.; Heebner N.R.; Lovalekar M.; Sell T.C.","Akins, Jonathan S. (37088236600); Heebner, Nicholas R. (55342842200); Lovalekar, Mita (6507675220); Sell, Timothy C. (57140170900)","37088236600; 55342842200; 6507675220; 57140170900","Reliability and validity of instrumented soccer equipment","2015","Journal of Applied Biomechanics","31","3","","195","201","6","14","10.1123/jab.2014-0191","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930336692&doi=10.1123%2fjab.2014-0191&partnerID=40&md5=c504d04ad38d1a44c648f12517b7d395","Department of Rehabilitation Science and Technology, University of Pittsburgh, Pittsburgh, PA, United States; Neuromuscular Research Laboratory, Department of Sports Medicine and Nutrition, University of Pittsburgh, Pittsburgh, PA, United States","Akins J.S., Department of Rehabilitation Science and Technology, University of Pittsburgh, Pittsburgh, PA, United States; Heebner N.R., Neuromuscular Research Laboratory, Department of Sports Medicine and Nutrition, University of Pittsburgh, Pittsburgh, PA, United States; Lovalekar M., Neuromuscular Research Laboratory, Department of Sports Medicine and Nutrition, University of Pittsburgh, Pittsburgh, PA, United States; Sell T.C., Neuromuscular Research Laboratory, Department of Sports Medicine and Nutrition, University of Pittsburgh, Pittsburgh, PA, United States","Ankle ligament sprains are the most common injury in soccer. The high rate of these injuries demonstrates a need for novel data collection methodologies. Therefore, soccer shoes and shin guards were instrumented with inertial sensors to measure ankle joint kinematics in the field. The purpose of this study was to assess test-retest reliability and concurrent criterion validity of a kinematic assessment using the instrumented soccer equipment. Twelve soccer athletes performed athletic maneuvers in the laboratory and field during 2 sessions. In the laboratory, ankle joint kinematics were simultaneously measured with the instrumented equipment and a conventional motion analysis system. Reliability was assessed using ICC and validity was assessed using correlation coefficients and RMSE. While our design criteria of good test-retest reliability was not supported (ICC > .80), sagittal plane ICCs were mostly fair to good and similar to motion analysis results; and sagittal plane data were valid (r = .90-.98; RMSE < 5°). Frontal and transverse plane data were not valid (r < .562; RMSE > 3°). Our results indicate that the instrumented soccer equipment can be used to measure sagittal plane ankle joint kinematics. Biomechanical studies support the utility of sagittal plane measures for lower extremity injury prevention. © 2015 Human Kinetics, Inc.","Biomechanics; Inertial sensors; Kinematics; Magnetic sensors","Accelerometry; Adult; Ankle Joint; Equipment Design; Equipment Failure Analysis; Humans; Male; Monitoring, Ambulatory; Protective Devices; Range of Motion, Articular; Reproducibility of Results; Sensitivity and Specificity; Shoes; Soccer; Sports Equipment; Biomechanics; Inertial navigation systems; Kinematics; Magnetic sensors; Motion analysis; Neuromuscular rehabilitation; Reliability analysis; Biomechanical studies; Correlation coefficient; Inertial sensor; Lower extremity injuries; Motion analysis system; Reliability and validity; Test-retest reliability; Transverse planes; analytical error; ankle; Article; biomechanics; correlation coefficient; general device; human; human experiment; instrumented soccer equipment; kinematics; male; normal human; root mean square error; soccer; test retest reliability; validity; accelerometry; adult; ambulatory monitoring; device failure analysis; devices; equipment design; evaluation study; joint characteristics and functions; physiology; protective equipment; reproducibility; sensitivity and specificity; shoe; sports equipment; validation study; Football","The FIFA Big Count 2006: 270 Million Active in Football, (2014); Agel J., Evans T., Dick R., Et al., Descriptive epidemiology of collegiate men's soccer injuries: National Collegiate Athletic Association Injury Surveillance System, 1988-1989 through 2002-2003, J Athl Train., 42, 2, pp. 270-277, (2007); Dick R., Putukian M., Agel J., Et al., Descriptive epidemiology of collegiate women's soccer injuries: National Collegiate Athletic Association Injury Surveillance System, 1988-1989 through 2002-2003, J Athl Train., 42, 2, pp. 278-285, (2007); Ekstrand J., Gillquist J., Soccer injuries and their mechanisms: A prospective study, Med Sci Sports Exerc., 15, 3, pp. 267-270, (1983); Yeung M.S., Chan K.M., So C., Et al., An epidemiological survey on ankle sprain, Br J Sports Med., 28, 2, pp. 112-116, (1994); 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Cloete T., Scheffer C., Repeatability of an off-the-shelf, full body inertial motion capture system during clinical gait analysis, Enginering in Medicine and Biology Society (EMBC), 2010 Annual International Conference of the IEEE, (2010); Neter J., Wasserman W., Kutner M., Applied Linear Statistical Models: Regression, Analysis or Variance, and Experimental Designs, (1985); Portney L.G., Watkins M.P., Foundations of Clinical Research: Applications to Practice, (2000); Bergmann J.H., Mayagoitia R.E., Smith I.C., A portable system for collecting anatomical joint angles during stair ascent: A comparison with an optical tracking device, Dyn Med., 8, 1, (2009); Cloete T., Scheffer C., Benchmarking of a full-body inertial motion capture system for clinical gait analysis, Enginering in Medicine and Biology Society (EMBC), 2008 Annual International Conference of the IEEE, (2008); Picerno P., Cereatti A., Cappozzo A., Joint kinematics estimate using wearable inertial and magnetic sensing modules, Gait Posture, 28, 4, pp. 588-595, (2008); Ferrari A., Cutti A.G., Garofalo P., Et al., First in vivo assessment of ""Outwalk"": A novel protocol for clinical gait analysis based on inertial and magnetic sensors, Med Biol Eng Comput., 48, 1, pp. 1-15, (2010); Madgwick S.O.H., Harrison A.J.L., Vaidyanathan R., Estimation of IMU and MARG orientation using a gradient descent algorithm, Rehabilitation Robotics, 2011 Annual International Conference of the IEEE, (2011); Butler R.J., Willson J.D., Fowler D., Et al., Gender differences in landing mechanics vary depending on the type of landing, Clin J Sport Med., 23, 1, pp. 52-57, (2013); Arnason A., Gudmundsson A., Dahl H., Et al., Soccer injuries in Iceland, Scand J Med Sci Sports., 6, 1, pp. 40-45, (1996); Cloke D.J., Spencer S., Hodson A., Et al., The epidemiology of ankle injuries occurring in English Football Association academies, Br J Sports Med., 43, 14, pp. 1119-1125, (2009); Fousekis K., Tsepis E., Vagenas G., Intrinsic risk factors of noncontact ankle sprains in soccer a prospective study on 100 professional players, Am J Sports Med., 40, 8, pp. 1842-1850, (2012); Woods C., Hawkins R., Hulse M., Et al., The football association medical research programme: An audit of injuries in professional football: An analysis of ankle sprains, Br J Sports Med., 37, 3, pp. 233-238, (2003); Davis R.B., Ounpuu S., Tyburski D., Et al., A gait analysis data collection and reduction technique, Hum Mov Sci., 10, 5, pp. 575-587, (1991); Kadaba M.P., Ramakrishnan H., Wootten M., Measurement of lower extremity kinematics during level walking, J Orthop Res., 8, 3, pp. 383-392, (1990); O'Donovan K.J., Kamnik R., O'Keeffe D.T., Et al., An inertial and magnetic sensor based technique for joint angle measurement, J Biomech., 40, 12, pp. 2604-2611, (2007); Jasiewicz J.M., Allum J.H.J., Middleton J.W., Et al., Gait event detection using linear accelerometers or angular velocity transducers in able-bodied and spinal-cord injured individuals, Gait Posture, 24, 4, pp. 502-509, (2006); Hreljac A., Marshall R.N., Algorithms to determine event timing during normal walking using kinematic data, J Biomech., 33, 6, pp. 783-786, (2000); Hreljac A., Stergiou N., Phase determination during normal running using kinematic data, Med Biol Eng Comput., 38, 5, pp. 503-506, (2000); Fleiss J.L., Design and Analysis of Clinical Experiments, (1985); Garofalo P., Cutti A.G., Filippi M.V., Et al., Inter-operator reliability and prediction bands of a novel protocol to measure the coordinated movements of shoulder-girdle and humerus in clinical settings, Med Biol Eng Comput., 47, 5, pp. 475-486, (2009); Kadaba M.P., Ramakrishnan H., Wootten M., Et al., Repeatability of kinematic, kinetic, and electromyographic data in normal adult gait, J Orthop Res., 7, 6, pp. 849-860, (1989); Yavuzer G., Oken O., Elhan A., Et al., Repeatability of lower limb three-dimensional kinematics in patients with stroke, Gait Posture, 27, 1, pp. 31-35, (2008); Young D., D'Orey S., Opperman R., Et al., Estimation of lower limb joint angles during walking using extended kalman filtering, Proceedings of the 6th World Congress of Biomechanics (WCB 2010), (2010); Brown C., Padua D., Marshall S.W., Et al., Individuals with mechanical ankle instability exhibit different motion patterns than those with functional ankle instability and ankle sprain copers, Clin Biomech (Bristol, Avon), 23, 6, pp. 822-831, (2008); Fong D.T.-P., Hong Y., Shima Y., Et al., Biomechanics of supination ankle sprain a case report of an accidental injury event in the laboratory, Am J Sports Med., 37, 4, pp. 822-827, (2009); Wright I.C., Neptune R., Van Den Bogert A.J., Et al., The influence of foot positioning on ankle sprains, J Biomech., 33, 5, pp. 513-519, (2000); Devita P., Skelly W.A., Effect of landing stiffness on joint kinetics and energetics in the lower extremity, Med Sci Sports Exerc., 24, 1, pp. 108-115, (1992); Hagins M., Pappas E., Kremenic I., Et al., The effect of an inclined landing surface on biomechanical variables during a jumping task, Clin Biomech (Bristol, Avon), 22, 9, pp. 1030-1036, (2007); Kovacs I., Tihanyi J., Devita P., Et al., Foot placement modifies kinematics and kinetics during drop jumping, Med Sci Sports Exerc., 31, 5, pp. 708-716, (1999)","J.S. Akins; Department of Rehabilitation Science and Technology, University of Pittsburgh, Pittsburgh, United States; email: jsa14@pitt.edu","","Human Kinetics Publishers Inc.","10658483","","JABOE","25734398","English","J. Appl. Biomech.","Article","Final","","Scopus","2-s2.0-84930336692" "Tierney G.J.; Power J.; Simms C.","Tierney, Gregory J. (57190610756); Power, Jonathan (57218876727); Simms, Ciaran (7004054929)","57190610756; 57218876727; 7004054929","Force experienced by the head during heading is influenced more by speed than the mechanical properties of the football","2021","Scandinavian Journal of Medicine and Science in Sports","31","1","","124","131","7","11","10.1111/sms.13816","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85090595809&doi=10.1111%2fsms.13816&partnerID=40&md5=c725ca179869a1f3b98e5ae4e2ab3151","School of Biomedical Sciences, University of Leeds, Leeds, United Kingdom; Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin, Ireland; The Football Association, London, United Kingdom","Tierney G.J., School of Biomedical Sciences, University of Leeds, Leeds, United Kingdom, Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin, Ireland; Power J., The Football Association, London, United Kingdom; Simms C., Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin, Ireland","There are growing concerns about the risk of neurodegenerative diseases associated with heading in football. It is essential to understand the biomechanics of football heading to guide player protection strategies to reduce the severity of the impact. The aim of this study was to assess the effect of football speed, mass, and stiffness on the forces experienced during football heading using mathematical and human body computational model simulations. Previous research indicates that a football header can be modeled as a lumped mass mathematical model with elastic contact. Football headers were then reconstructed using a human body modeling approach. Simulations were run by independently varying the football mass, speed, and stiffness. Peak contact force experienced by the head was extracted from each simulation. The mathematical and human body computational model simulations indicate that the force experienced by the head was directly proportional to the speed of the ball and directly proportional to the square root of the ball stiffness and mass. Over the practical range of ball speed, mass, and stiffness, the force experienced by the head during football heading is mainly influenced by the speed of the ball rather than its mass or stiffness. The findings suggest that it would be more beneficial to develop player protection strategies that aim to reduce the speed at which the ball is traveling when headed by a player. Law changes reducing high ball speeds could be trialed at certain age grades or as a phased introduction to football heading. © 2020 The Authors. Scandinavian Journal of Medicine & Science In Sports published by John Wiley & Sons Ltd","biomechanics; computational modeling; head injury","Biomechanical Phenomena; Equipment Design; Head; Humans; Models, Biological; Risk Factors; Soccer; Sports Equipment; biological model; biomechanics; equipment design; head; human; injury; physiology; risk factor; soccer; sports equipment","Rutherford A., Stewart W., Bruno D., Heading for trouble: is dementia a game changer for football?, Br J Sports Med, 53, 6, pp. 321-322, (2019); Kontos A.P., Braithwaite R., Chrisman S.P., Et al., Systematic review and meta-analysis of the effects of football heading, Br J Sports Med, 51, 15, pp. 1118-1124, (2017); Mackay D.F., Russell E.R., Stewart K., MacLean J.A., Pell J.P., Stewart W., Neurodegenerative disease mortality among former professional soccer players, N Engl J Med, 381, pp. 1801-1808, (2019); Lobelo F., Stoutenberg M., Hutber A., The exercise is medicine global health initiative: a 2014 update, Br J Sports Med, 48, 22, pp. 1627-1633, (2014); Updated heading guidance announced for youth training sessions; Naunheim R.S., Ryden A., Standeven J., Et al., Does soccer headgear attenuate the impact when heading a soccer ball?, Acad Emerg Med, 10, 1, pp. 85-90, (2003); Hanson H., Material and construction influences on football impact behaviour, (2014); McIntosh A.S., Patton D.A., Frechede B., Pierre P.-A., Ferry E., Barthels T., The biomechanics of concussion in unhelmeted football players in Australia: a case–control study, BMJ Open, 4, 5, (2014); Miller L.E., Pinkerton E.K., Fabian K.C., Et al., Characterizing head impact exposure in youth female soccer with a custom-instrumented mouthpiece, Res Sports Med, 28, 1, pp. 55-71, (2020); Shewchenko N., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football. Part 3: effect of ball properties on head response, Br J Sports Med, 39, pp. i33-i39, (2005); Tierney G.J., Simms C.K., The effects of tackle height on inertial loading of the head and neck in Rugby union: a multibody model analysis, Brain Inj, 31, 13-14, pp. 1925-1931, (2017); Queen R.M., Weinhold P.S., Kirkendall D.T., Yu B., Theoretical study of the effect of ball properties on impact force in soccer heading, Med Sci Sports Exerc, 35, 12, pp. 2069-2076, (2003); Kajzer J., Cavallero C., Bonnoit J., Morjane A., Ghanouchi S., Response of the knee joint in lateral impact: effect of bending moment, pp. 105-116, (1993); Yang J., Kajzer J., Cavallero C., Bonnoit J., Computer simulation of shearing and bending response of the knee joint to a lateral impact, SAE Tech Pap, pp. 148-7191, (1995); Bouquet R., Ramet M., Bermond F., Cesari D., Thoracic and pelvis human response to impact, pp. 100-109, (1994); Viano D.C., Biomechanical responses and injuries in blunt lateral impact, SAE Tech Pap, pp. 148-7191, (1989); Talantikite Y., Bouquet R., Ramet M., Guillemot H., Robin S., Voiglio E., Human thorax behaviour for side impact: influence of impact mass and velocities, (1998); Meyer E., Bonnoit J., Le choc latéral sur l’épaule: Mise en place d’un protocole expérimental en sollicitation dynamique, (1994); Elliott J., Lyons M., Kerrigan J., Wood D., Simms C., Predictive capabilities of the MADYMO multibody pedestrian model: three-dimensional head translation and rotation, head impact time and head impact velocity, P I Mech Eng K-J Mul, 226, 3, pp. 266-277, (2012); Yin S., Li J., Xu J., Exploring the mechanisms of vehicle front-end shape on pedestrian head injuries caused by ground impact, Accid Anal Prev, 106, pp. 285-296, (2017); Van Rooij L., Bhalla K., Meissner M., Et al., Pedestrian crash reconstruction using multi-body modeling with geometrically detailed, validated vehicle models and advanced pedestrian injury criteria, (2003); Sankarasubramanian H., Mukherjee S., Chawla A., Optimization of vehicle front for safety of pedestrians, (2011); Frechede B., McIntosh A., Use of MADYMO's human facet model to evaluate the risk of head injury in impact, (2007); Frechede B., McIntosh A.S., Numerical reconstruction of real-life concussive football impacts, Med Sci Sports Exerc, 41, 2, pp. 390-398, (2009); Tierney G.J., Richter C., Denvir K., Simms C.K., Could lowering the tackle height in rugby union reduce ball carrier inertial head kinematics?, J Biomech, 72, pp. 29-36, (2018); Tierney G., A biomechanical assessment of direct and inertial head loading in Rugby Union, Trinity College Dublin: 2018; Statistics reveal Britain's 'Mr and Mrs Average'; Hassan M.H.A., Taha Z., Hasanuddin I., Mokhtarudin M.J.M., Mechanics of soccer heading and protective headgear, (2018); Serway R.A., Jewett J.W., Physics for scientists and engineers with modern physics, (2018); Levendusky T., Armstrong C., Eck J., Jeziorowski J., Kugler L., Impact characteristics of two types of soccer balls, (1988); Cunningham J., Broglio S., Wilson F., Influence of playing rugby on long-term brain health following retirement: a systematic review and narrative synthesis, BMJ Open Sport Exerc Med, 4, 1, (2018); Stokes K.A., Locke D., Roberts S., Et al., Does reducing the height of the tackle through law change in elite men’s rugby union (The Championship, England) reduce the incidence of concussion? A controlled study in 126 games, Br J Sports Med, (2019); Law 16: the goal kick; Beaudouin F., Aus der Funten K., Tross T., Reinsberger C., Meyer T., Head injuries in professional male football (soccer) over 13 years: 29% lower incidence rates after a rule change (red card), Br J Sports Med, 53, 15, pp. 948-952, (2019); Tierney G.J., Simms C., Predictive capacity of the MADYMO multibody human body model applied to head kinematics during rugby union tackles, Appl Sci, 9, 4, (2019); Tierney G.J., Gildea K., Krosshaug T., Simms C.K., Analysis of ball carrier head motion during a rugby union tackle without direct head contact: a case study, Int J Sports Sci Coach, 14, 2, pp. 190-196, (2019); Tierney G.J., Joodaki H., Krosshaug T., Forman J.L., Crandall J.R., Simms C.K., The kinematics of head impacts in contact sport: an initial assessment of the potential of model based image matching, (2016); Tierney G.J., Joodaki H., Krosshaug T., Forman J.L., Crandall J.R., Simms C.K., Assessment of model-based image-matching for future reconstruction of unhelmeted sport head impact kinematics, Sports Biomech, 17, 1, pp. 33-47, (2018); Cazzola D., Holsgrove T.P., Preatoni E., Gill H.S., Trewartha G., Cervical spine injuries: a whole-body musculoskeletal model for the analysis of spinal loading, PLoS One, 12, 1, (2017); Tierney G.J., Kuo C., Wu L., Weaving D., Camarillo D., Analysis of head acceleration events in collegiate-level American football: a combination of qualitative video analysis and in-vivo head kinematic measurement, J Biomech, 110, (2020)","G.J. Tierney; School of Biomedical Sciences, University of Leeds, Leeds, United Kingdom; email: g.tierney@leeds.ac.uk; G.J. Tierney; Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin, Ireland; email: g.tierney@leeds.ac.uk","","John Wiley and Sons Inc","09057188","","SMSSE","32881107","English","Scand. J. Med. Sci. Sports","Article","Final","All Open Access; Green Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85090595809" "Khalid A.J.; Ian Harris S.; Michael L.; Joseph H.; Qu X.","Khalid, Abdul Jabbar (36835204900); Ian Harris, Sujae (57215717118); Michael, Loke (56478481800); Joseph, Hamill (19734120100); Qu, Xingda (57194640319)","36835204900; 57215717118; 56478481800; 19734120100; 57194640319","Effects of neuromuscular fatigue on perceptual-cognitive skills between genders in the contribution to the knee joint loading during side-stepping tasks","2015","Journal of Sports Sciences","33","13","","1322","1331","9","14","10.1080/02640414.2014.990485","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929836116&doi=10.1080%2f02640414.2014.990485&partnerID=40&md5=01fd263176b7b7142c138c6eea561e4d","School of Sports, Health & Leisure, Republic Polytechnic, Singapore; Biomechanics Laboratory, Department of Kinesiology, University of Massachusetts, Amherst, MA, United States; School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore","Khalid A.J., School of Sports, Health & Leisure, Republic Polytechnic, Singapore; Ian Harris S., School of Sports, Health & Leisure, Republic Polytechnic, Singapore; Michael L., School of Sports, Health & Leisure, Republic Polytechnic, Singapore; Joseph H., Biomechanics Laboratory, Department of Kinesiology, University of Massachusetts, Amherst, MA, United States; Qu X., School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore","Abstract: This study investigated whether neuromuscular fatigue affects the neuromuscular control of an athlete within a sports context setting and whether these effects were more pronounced in the females. Lower limb joint kinetics of 6 male and 6 female inter-varsity soccer players performing side-stepping tasks in non-fatigue versus fatigue and anticipated versus unanticipated conditions were quantified using 10 Motion Analysis Corporation cameras and a Kistler™ force platform. The Yo-Yo intermittent recovery Level 1 fatigue protocol was employed. Stance foot initial contact and peak forces, and peak joint knee moments of the lower limb were submitted to a 3-way mixed-model repeated measure ANOVA. The results suggested that males tend to elicit significantly higher knee joint loadings when fatigued. In addition, males elicited significantly higher peak proximal tibia anterior/posterior shear force, vertical ground reaction force at initial contact and peak internal rotational moments than females. These findings suggested that males were at greater overall injury risk than females, especially in the sagittal plane. Neuromuscular control-based training programmes/interventions that are designed to reduce the risk of the non-contact ACL injury need to be customised for the different genders. © 2014, © 2014 Taylor & Francis.","anterior cruciate ligament; decision-making; gender differences; neuromuscular fatigue","Anterior Cruciate Ligament; Biomechanical Phenomena; Cognition; Decision Making; Female; Humans; Knee Injuries; Knee Joint; Male; Muscle Fatigue; Muscle, Skeletal; Risk Factors; Sex Factors; Soccer; Time and Motion Studies; Weight-Bearing; Young Adult; anterior cruciate ligament; biomechanics; cognition; decision making; female; human; injuries; innervation; knee; knee injury; male; muscle fatigue; pathophysiology; physiology; risk factor; sex difference; skeletal muscle; soccer; task performance; weight bearing; young adult","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer a 13-year review, The American Journal of Sports Medicine, 33, 4, pp. 524-531, (2005); 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Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Medicine and Science in Sports and Exercise, 33, 7, pp. 1168-1175, (2001); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Borotikar B.S., Newcomer R., Koppes R., McLean S.G., Combined effects of fatigue and decision making on female lower limb landing postures: Central and peripheral contributions to ACL injury risk, Clinical Biomechanics, 23, 1, pp. 81-92, (2008); Brown T.N., Palmieri-Smith R.M., McLean S.G., Sex and limb differences in hip and knee kinematics and kinetics during anticipated and unanticipated jump landings: Implications for anterior cruciate ligament injury, British Journal of Sports Medicine, 43, 13, pp. 1049-1056, (2009); Chaudhuri A., Behan P.O., Fatigue in neurological disorders, The Lancet, 363, pp. 978-988, (2004); Cochrane J.L., Lloyd D.G., Besier T.F., Elliott B.C., Doyle T.I.M.L.A., Ackland T.R., Training affects knee kinematics and kinetics in cutting maneuvers in sport, Medicine and Science in Sports and Exercise, 42, 8, pp. 1535-1544, (2010); 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Kernozek T.W., Torry M.R., Iwasaki M., Gender differences in lower extremity landing mechanics caused by neuromuscular fatigue, The American Journal of Sports Medicine, 36, 3, pp. 554-565, (2008); Krustrup P., Mohr M., Amstrup T., Rysgaard T., Johansen J., Steensberg A., Bangsbo J., The Yo-Yo intermittent recovery test: Physiological response, reliability, and validity, Medicine and Science in Sports and Exercise, 35, 4, pp. 697-705, (2003); Lephart S.M., Abt J.P., Ferris C.M., Neuromuscular contributions to anterior cruciate ligament injuries in females, Current Opinion in Rheumatology, 14, 2, pp. 168-173, (2002); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clinical Biomechanics, 16, 5, pp. 438-445, (2001); McLean S.G., Felin R.E., Suedekum N., Calabrese G., Passerallo A., Joy S., Impact of fatigue on gender-based high-risk landing strategies, Medicine and Science in Sports and Exercise, 39, 3, pp. 502-514, (2007); McLean S.G., Huang X., Su A., Van Den Bogert A.J., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clinical Biomechanics, 19, 8, pp. 828-838, (2004); McLean S.G., Huang X., Van Den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clinical Biomechanics, 20, 8, pp. 863-870, (2005); McLean S.G., Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: Potential for injury in women, Medicine and Science in Sports and Exercise, 31, pp. 959-968, (1999); McLean S.G., Samorezov J.E., Fatigue-induced ACL injury risk stems from a degradation in central control, Medicine and Science in Sports and Exercise, 41, 8, pp. 1661-1672, (2009); Mielke D., Soccer fundamentals, (2003); Myers J.B., Guskiewicz K.M., Schneider R.A., Prentice W.E., Proprioception and neuromuscular control of the shoulder after muscle fatigue, Journal of Athletic Training, 34, 4, pp. 362-367, (1999); Myklebust G., Bahr R., Return to play guidelines after anterior cruciate ligament surgery, British Journal of Sports Medicine, 39, 3, pp. 127-131, (2005); Padua D.A., Arnold B.L., Perrin D.H., Gansneder B.M., Carcia C.R., Granata K.P., Fatigue, vertical leg stiffness, and stiffness control strategies in males and females, Journal of Athletic Training, 41, 3, pp. 294-304, (2006); Pollard C.D., Davis I.M., Hamill J., Influence of gender on hip and knee mechanics during a randomly cued cutting maneuver, Clinical Biomechanics, 19, 10, pp. 1022-1031, (2004); Quatman C.E., Hewett T.E., The anterior cruciate ligament injury controversy: Is “valgus collapse” a sex-specific mechanism?, British Journal of Sports Medicine, 43, 5, pp. 328-335, (2009); Rozzi S.L., Lephart S.M., Fu F.H., Effects of muscular fatigue on knee joint laxity and neuromuscular characteristics of male and female athletes, Journal of Athletic Training, 34, 2, pp. 106-114, (1999); Sanna G., O'Connor K.M., Fatigue-related changes in stance leg mechanics during sidestep cutting maneuvers, Clinical Biomechanics, 23, 7, pp. 946-954, (2008); Shimokochi Y., Shultz S.J., Mechanisms of noncontact anterior cruciate ligament injury, Journal of Athletic Training, 43, 4, pp. 396-408, (2008); Svenson O., Benson L., Framing and time pressure in decision making, Time pressure and stress in human judgment and decision making, pp. 133-144, (1993); Thomson K., Watt A.P., Liukkonen J., Differences in ball sports athletes speed discrimination skills before and after exercise induced fatigue, Journal of Sports Science & Medicine, 8, 2, pp. 259-264, (2009); Tomporowski P.D., Ellis N.R., Effects of exercise on cognitive processes: A review, Psychological Bulletin, 99, 3, pp. 338-346, (1986); Tsai L.-C., Sigward S.M., Pollard C.D., Fletcher M.J., Powers C.M., Effects of fatigue and recovery on knee mechanics during side-step cutting, Medicine and Science in Sports and Exercise, 41, 10, pp. 1952-1957, (2009); Williams A.M., Ericsson K.A., Perceptual-cognitive expertise in sport: Some considerations when applying the expert performance approach, Human Movement Science, 24, 3, pp. 283-307, (2005); Wojtys E.M., Wylie B.B., Huston L.J., The effects of muscle fatigue on neuromuscular function and anterior tibial translation in healthy knees, The American Journal of Sports Medicine, 24, 5, pp. 615-621, (1996); Woo S.L.-Y., Hollis J.M., Adams D.J., Lyon R.M., Takai S., Tensile properties of the human femur-anterior cruciate ligament-tibia complex: The effects of specimen age and orientation, The American Journal of Sports Medicine, 19, 3, pp. 217-225, (1991); Yu B., Chappell J.D., Garrett W.E., Authors’ response to letter to the editor, The American Journal of Sports Medicine, 34, pp. 312-315, (2006); Yu B., Garrett W.E., Mechanisms of non-contact ACL injuries, British Journal of Sports Medicine, 41, pp. 47-51, (2007)","","","Routledge","02640414","","JSSCE","25562469","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-84929836116" "Murtagh C.F.; Vanrenterghem J.; O'Boyle A.; Morgans R.; Drust B.; Erskine R.M.","Murtagh, Conall F. (56536788600); Vanrenterghem, Jos (6506257376); O'Boyle, Andrew (57190422135); Morgans, Ryland (56024877200); Drust, Barry (8076138400); Erskine, Robert M. (26633733900)","56536788600; 6506257376; 57190422135; 56024877200; 8076138400; 26633733900","Unilateral jumps in different directions: a novel assessment of soccer-associated power?","2017","Journal of Science and Medicine in Sport","20","11","","1018","1023","5","16","10.1016/j.jsams.2017.03.016","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85017433755&doi=10.1016%2fj.jsams.2017.03.016&partnerID=40&md5=1fb775b8ba189cc61522f1f263293873","School of Sport and Exercise Sciences, Liverpool John Moores University, United Kingdom; Liverpool Football Club, United Kingdom; KU Leuven—University of Leuven, Department of Rehabilitation Sciences, Belgium; Football Association of Wales, United Kingdom; Institute of Sport, Exercise & Health, University College London, United Kingdom","Murtagh C.F., School of Sport and Exercise Sciences, Liverpool John Moores University, United Kingdom, Liverpool Football Club, United Kingdom; Vanrenterghem J., School of Sport and Exercise Sciences, Liverpool John Moores University, United Kingdom, KU Leuven—University of Leuven, Department of Rehabilitation Sciences, Belgium; O'Boyle A., School of Sport and Exercise Sciences, Liverpool John Moores University, United Kingdom, Liverpool Football Club, United Kingdom; Morgans R., Football Association of Wales, United Kingdom; Drust B., School of Sport and Exercise Sciences, Liverpool John Moores University, United Kingdom, Liverpool Football Club, United Kingdom; Erskine R.M., School of Sport and Exercise Sciences, Liverpool John Moores University, United Kingdom, Institute of Sport, Exercise & Health, University College London, United Kingdom","Objectives We aimed to determine whether countermovement jumps (CMJs; unilateral and bilateral) performed in different directions assessed independent lower-limb power qualities, and if unilateral CMJs would better differentiate between elite and non-elite soccer players than the bilateral vertical (BV) CMJ. Design Elite (n = 23; age, 18.1 ± 1.0 years) and non-elite (n = 20; age, 22.3 ± 2.7 years) soccer players performed three BV, unilateral vertical (UV), unilateral horizontal-forward (UH) and unilateral medial (UM) CMJs. Methods Jump performance (height and projectile range), kinetic and kinematic variables from ground reaction forces, and peak activation levels of the vastus lateralis and biceps femoris (BF) muscles from surface electromyography, were compared between jumps and groups of players. Results Peak vertical power (V-power) was greater in BV (220.2 ± 30.1 W/kg) compared to UV (144.1 ± 16.2 W/kg), which was greater than UH (86.7 ± 18.3 W/kg) and UM (85.5 ± 13.5 W/kg) (all, p < 0.05) but there was no difference between UH and UM (p = 1.000). Peak BF EMG was greater in UH compared to all other CMJs (p ≤ 0.001). V-power was greater in elite than non-elite for all CMJs (p ≤ 0.032) except for BV (p = 0.197). Elite achieved greater UH projectile range than non-elite (51.6 ± 15.4 vs. 40.4 ± 10.4 cm, p = 0.009). Conclusions We have shown that UH, UV and UM CMJs assess distinct lower-limb muscular power capabilities in soccer players. Furthermore, as elite players outperformed non-elite players during unilateral but not BV CMJs, unilateral CMJs in different directions should be included in soccer-specific muscular power assessment and talent identification protocols, rather than the BV CMJ. © 2017 Sports Medicine Australia","Countermovement; Electromyography; Horizontal; Jump; Mediolateral; Vertical","Adolescent; Adult; Athletic Performance; Biomechanical Phenomena; Case-Control Studies; Electromyography; Exercise Test; Hamstring Muscles; Humans; Isometric Contraction; Male; Muscle Strength; Quadriceps Muscle; Soccer; Task Performance and Analysis; Young Adult; adult; biceps femoris muscle; clinical article; electromyography; ground reaction force; height; human; soccer player; vastus lateralis muscle; young adult; adolescent; athletic performance; biomechanics; case control study; electromyography; exercise test; hamstring muscle; male; muscle isometric contraction; muscle strength; physiology; procedures; quadriceps femoris muscle; soccer; task performance","Cormie P., McGuigan M.R., Newton R.U., Developing maximal neuromuscular power: part 1—biological basis of maximal power production, Sports Med, 41, 1, pp. 17-38, (2011); Faude O., Koch T., Meyer T., Straight sprinting is the most frequent action in goal situations in professional football, J Sports Sci, 30, 7, pp. 625-631, (2012); Chelly M.S., Ghenem M.A., Abid K., Et al., Effects of in-season short-term plyometric training program on leg power, jump-and sprint performance of soccer players, J Strength Cond Res, 24, 10, pp. 2670-2676, (2010); Ronnestad B.R., Nymark B.S., Raastad T., Effects of in-season strength maintenance training frequency in professional soccer players, J Strength Cond Res, 25, 10, pp. 2653-2660, (2011); Premier-League, Elite Player Performance Plan, (2011); Bradley P.S., Di Mascio M., Peart D., Et al., High-intensity activity profiles of elite soccer players at different performance levels, J Strength Cond Res, 24, 9, pp. 2343-2351, (2010); Withers R., Maricic Z., Wasilewski S., Et al., Match analysis of Australian professional soccer players, J Hum Mov Stud, 8, pp. 159-176, (1982); Reilly T., Thomas V., A motion analysis of work-rate in different positional roles in professional football match-play, J Hum Mov Stud, 2, 2, pp. 87-97, (1976); Anderson L., Orme P., Michele R.D., Et al., Quantification of seasonal-long physical load in soccer players with different starting status from the English Premier League: implications for maintaining squad physical fitness, Int J Sports Physiol Perform, 11, 8, pp. 1038-1046, (2016); Nedelec M., McCall A., Carling C., Et al., Recovery in soccer: part I—post-match fatigue and time course of recovery, Sports Med, 42, 12, pp. 997-1015, (2012); Meylan C.M., Nosaka K., Green J., Et al., Temporal and kinetic analysis of unilateral jumping in the vertical, horizontal, and lateral directions, J Sports Sci, 28, 5, pp. 545-554, (2010); Hewit J.K., Cronin J.B., Hume P.A., Asymmetry in multi-directional jumping tasks, Phys Ther Sport, 13, 4, pp. 238-242, (2012); Nagano A., Komura T., Fukashiro S., Optimal coordination of maximal-effort horizontal and vertical jump motions—a computer simulation study, Biomed Eng Online, 6, 1, pp. 1-9, (2007); Jones S.L., Caldwell G.E., Mono-and biarticular muscle activity during jumping in different directions, J Appl Biomech, 19, 3, pp. 205-222, (2003); Fukashiro S., Besier T.F., Barrett R., Et al., Direction control in standing horizontal and vertical jumps, Int J Sport Health Sci, 3, pp. 272-279, (2005); Markovic G., Jaric S., Is vertical jump height a body size-independent measure of muscle power?, J Sports Sci, 25, 12, pp. 1355-1363, (2007); Cometti G., Maffiuletti N.A., Pousson M., Et al., Isokinetic strength and anaerobic power of elite, subelite and amateur French soccer players, Int J Sports Med, 22, 1, pp. 45-51, (2001); Vanrenterghem J., De Clercq D., Cleven P.V., Necessary precautions in measuring correct vertical jumping height by means of force plate measurements, Ergonomics, 44, 8, pp. 814-818, (2001); Grimshaw P., Fowler N., Lees A., Et al., BIOS Instant Notes in Sport and Exercise Biomechanics, (2004); Meylan C.M., Cronin J.B., Oliver J.L., Et al., The reliability of jump kinematics and kinetics in children of different maturity status, J Strength Cond Res, 26, 4, pp. 1015-1026, (2012); Walsh M., Boling M.C., McGrath M., Et al., Lower extremity muscle activation and knee flexion during a jump-landing task, J Athl Train, 47, 4, (2012); Freriks B., Hermens H., Disselhorst-Klug C., Et al., The recommendations for sensors and sensor placement procedures for surface electromyography, Seniam, 8, pp. 13-54, (1999); Samozino P., Edouard P., Sangnier S., Et al., Force-velocity profile: imbalance determination and effect on lower limb ballistic performance, Int J Sports Med, 35, 6, pp. 505-510, (2014); Samozino P., Rejc E., Di Prampero P.E., Et al., Optimal force-velocity profile in ballistic movements—altius: citius or fortius?, Med Sci Sports Exerc, 44, 2, pp. 313-322, (2012); Dowling J.J., Vamos L., Identification of kinetic and temporal factors related to vertical jump performance, J Appl Biomech, 9, (1993); Wisloff U., Helgerud J., Hoff J., Strength and endurance of elite soccer players, Med Sci Sports Exerc, 30, 3, pp. 462-467, (1998); Arnason A., Sigurdsson S.B., Gudmundsson A., Et al., Physical fitness, injuries, and team performance in soccer, Med Sci Sports Exerc, 36, 2, pp. 278-285, (2004); Varley M.C., Aughey R.J., Acceleration profiles in elite Australian soccer, Int J Sports Med, 34, 1, pp. 34-39, (2013)","C.F. Murtagh; School of Sport and Exercise Sciences, Liverpool John Moores University, United Kingdom; email: C.F.Murtagh@2012.ljmu.ac.uk","","Elsevier Ltd","14402440","","JSMSF","28416354","English","J. Sci. Med. Sport","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85017433755" "Lahner M.; Von Schulze Pellengahr C.; Walter P.A.; Lukas C.; Falarzik A.; Daniilidis K.; Von Engelhardt L.V.; Abraham C.; Hennig E.M.; Hagen M.","Lahner, Matthias (36088565000); Von Schulze Pellengahr, Christoph (14720516300); Walter, Philipp Alexander (56126457100); Lukas, Carsten (57220182401); Falarzik, Andreas (56126154800); Daniilidis, Kiriakos (26649705700); Von Engelhardt, Lars Victor (13807420100); Abraham, Christoph (58299104300); Hennig, Ewald M (57196699689); Hagen, Marco (15821784900)","36088565000; 14720516300; 56126457100; 57220182401; 56126154800; 26649705700; 13807420100; 58299104300; 57196699689; 15821784900","Biomechanical and functional indicators in male semiprofessional soccer players with increased hip alpha angles vs. amateur soccer players","2014","BMC Musculoskeletal Disorders","15","1","88","","","","14","10.1186/1471-2474-15-88","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899074976&doi=10.1186%2f1471-2474-15-88&partnerID=40&md5=ba14d42d641c561de5d5cd7a39bdd14d","Department of Orthopaedic Surgery, Ruhr-University Bochum, St. Josef-Hospital, 44791 Bochum, Gudrunstr. 56, Germany; Department of Diagnostic and Interventional Radiology and Nuclear Medicine, Ruhr-University Bochum, St. Josef-Hospital, 44791 Bochum, Gudrunstr. 56, Germany; Olympic Training Center Westfalen/Bochum, 44866 Bochum, Hollandstr. 95, Germany; Department of Orthopaedic Surgery, Annastift Hannover, Medical School Hannover, MHH, 30625 Hannover, Anna-von-Borries-Str. 1-7, Germany; Faculty of Health Sciences, University of Witten/Herdecke, 58448 Witten, Alfred-Herrhausen-Str. 50, Germany; Biomechanics Laboratory, Department of Sport and Movement Sciences, University of Duisburg-Essen, 45141 Essen, Gladbecker Str. 182, Germany","Lahner M., Department of Orthopaedic Surgery, Ruhr-University Bochum, St. Josef-Hospital, 44791 Bochum, Gudrunstr. 56, Germany; Von Schulze Pellengahr C., Department of Orthopaedic Surgery, Ruhr-University Bochum, St. Josef-Hospital, 44791 Bochum, Gudrunstr. 56, Germany; Walter P.A., Department of Orthopaedic Surgery, Ruhr-University Bochum, St. Josef-Hospital, 44791 Bochum, Gudrunstr. 56, Germany; Lukas C., Department of Diagnostic and Interventional Radiology and Nuclear Medicine, Ruhr-University Bochum, St. Josef-Hospital, 44791 Bochum, Gudrunstr. 56, Germany; Falarzik A., Olympic Training Center Westfalen/Bochum, 44866 Bochum, Hollandstr. 95, Germany; Daniilidis K., Department of Orthopaedic Surgery, Annastift Hannover, Medical School Hannover, MHH, 30625 Hannover, Anna-von-Borries-Str. 1-7, Germany; Von Engelhardt L.V., Faculty of Health Sciences, University of Witten/Herdecke, 58448 Witten, Alfred-Herrhausen-Str. 50, Germany; Abraham C., Biomechanics Laboratory, Department of Sport and Movement Sciences, University of Duisburg-Essen, 45141 Essen, Gladbecker Str. 182, Germany; Hennig E.M., Biomechanics Laboratory, Department of Sport and Movement Sciences, University of Duisburg-Essen, 45141 Essen, Gladbecker Str. 182, Germany; Hagen M., Biomechanics Laboratory, Department of Sport and Movement Sciences, University of Duisburg-Essen, 45141 Essen, Gladbecker Str. 182, Germany","Background: Femoroacetabular impingement (FAI) is predominant in young male athletes, but not much is known about gait differences in cases of increased hip alpha angles. In our study, the hip alpha angle of Nötzli of soccer players was quantified on the basis of magnetic resonance imaging (MRI) with axial oblique sequences. The aim of the current study was to compare the rearfoot motion and plantar pressure in male semiprofessional soccer players with increased alpha angles to age-matched amateur soccer players. Methods. In a prospective analysis, male semiprofessional and amateur soccer players had an MRI of the right hip to measure the alpha angle of Nötzli. In a biomechanical laboratory setting, 14 of these participants in each group ran in two shoe conditions. Simultaneously in-shoe pressure distribution, tibial acceleration, and rearfoot motion measurements of the right foot were performed. Results: In the semiprofessional soccer group, the mean value of the alpha angle of group was 55.1 ± 6.58° (range 43.2-76.6°) and 51.6 ± 4.43° (range 41.9-58.8°) in the amateur group. In both shoe conditions, we found a significant difference between the two groups concerning the ground reaction forces, tibial acceleration, rearfoot motion and plantar pressure parameters (P < 0.01, P < 0.05, P = 0.04). Maximum rearfoot motion is about 22% lower in the semiprofessional group compared to the amateur group in both shoe conditions. Conclusions: This study confirmed that semiprofessional soccer players with increased alpha angles showed differences in gait kinematics compared to the amateur group. These findings support the need for a screening program for competitive soccer players. In cases of a conspicuous gait analysis and symptomatic hip pain, FAI must be ruled out by further diagnostic tests. © 2014 Lahner et al.; licensee BioMed Central Ltd.","Alpha angle of Nötzli; Femoroacetabular impingement; Magnetic resonance imaging; Rearfoot motion; Soccer players; Tibial acceleration","Acceleration; Anthropometry; Athletes; Disease Susceptibility; Femoracetabular Impingement; Foot; Gait; Hip Joint; Humans; Leg; Male; Motion; Observer Variation; Pressure; Prospective Studies; Running; Shoes; Single-Blind Method; Soccer; Supine Position; Young Adult; acceleration; adult; article; athlete; biomechanics; controlled study; femoroacetabular impingement; foot; gait; ground reaction force; hip; hip alpha angle; hip pain; human; kinematics; male; mass screening; measurement precision; musculoskeletal function; nuclear magnetic resonance imaging; physical activity; physical parameters; prospective study; range of motion; running; alpha angle; Article; hip malformation; increased hip alpha angle; musculoskeletal function; musculoskeletal system parameters; plantar pressure; rearfoot motion; tibial acceleration","Beck M., Kalhor M., Leunig M., Ganz R., Hip morphology influences the pattern of damage to the acetabular cartilage: Femoroacetabular impingement as a cause of early osteoarthritis of the hip, J Bone Joint Surg (Br), 87, pp. 1012-1018, (2005); Ganz R., Leunig M., Leunig-Ganz K., Harris W.H., The etiology of osteoarthritis of the hip: An integrated mechanical concept, Clin Orthop Relat Res, 466, pp. 264-272, (2008); Imam S., Khanduja V., Current concepts in diagnosis and management of femoroacetabular impingement, Int Orthop, 35, pp. 1427-1435, (2011); Leunig M., Ganz R., Femoroacetabular impingement. A common cause of hip complaints leading to arthrosis, Unfallchirurg, 108, pp. 9-10, (2005); Ganz R., Parvizi J., Beck M., Leunig M., Notzli H., Siebenrock K.A., Femoroacetabular impingement: A cause for osteoarthritis of the hip, Clin Orthop Relat Res, 417, pp. 112-120, (2003); Notzli H.P., Wyss T.F., Stoecklin C.H., Schmid M.R., Treiber K., Hodler J., The contour of the femoral head-neck junction as a predictor for the risk of anterior impingement, J Bone Joint Surg (Br), 84, pp. 556-560, (2002); Siebenrock K.A., Wahab K.H., Werlen S., Kalhor M., Leunig M., Ganz R., Abnormal extension of the femoral head epiphysis as a cause of cam impingement, Clin Orthop Relat Res, 418, pp. 54-60, (2004); Leunig M., Casillas M.M., Hamlet M., Hersche O., Notzli H., Slongo T., Ganz R., Slipped capital femoral epiphysis: Early mechanical damage to the acetabular cartilage by a prominent femoral metaphysic, Acta Orthop Scand, 413, pp. 370-375, (2000); Snow S.W., Keret D., Scarangella S., Bowen J.R., Anterior impingement of the femoral head: A late phenomenon of Legg-Calve-Perthes' disease, J Pediatr Orthop, 13, pp. 286-289, (1993); Kim W.Y., Hutchinson C.E., Andrew J.G., Allen P.D., The relationship between acetabular retroversion and osteoarthritis of the hip, J Bone Joint Surg (Br), 88, pp. 727-729, (2006); Beck M., Leunig M., Parvizi J., Boutier V., Wyss D., Ganz R., Anterior femoroacetabular impingement: Part II. Midterm results of surgical treatment, Clin Orthop Relat Res, 418, pp. 67-73, (2004); Papalia R., Del Buono A., Franceschi F., Marinozzi A., Maffulli N., Denaro V., Femoroacetabular impingement syndrome management: Arthroscopy or open surgery?, Int Orthop, 36, pp. 903-915, (2012); Johnson A.C., Shaman M.A., Ryan T.G., Femoroacetabular impingement in former high-level youth soccer players, Am J Sport Med, 40, pp. 1342-1346, (2012); Agricola R., Bessems J.H., Ginai A.Z., Heijboer M.P., Van Der Heijden R.A., Verhaar J.A., Weinans H., Waarsing J.H., The development of Cam-type deformity in adolescent and young male soccer players, Am J Sports Med, 40, pp. 1099-1106, (2012); Clemente F.M., Couceiro M.S., Martins F.M., Ivanova M.O., Mendes R., Activity profiles of soccer players during the 2010 world cup, J Hum Kinet, 38, pp. 201-211, (2013); Valent A., Frizzerio A., Bressan S., Zanella E., Giannotti E., Masiero S., Insertional tendinopathy of the adductors and rectus abdominis in athletes: A review, Muscles Ligaments Tendons J, 2, pp. 142-148, (2012); Kennedy M.J., Lamontagne M., Beaule P.E., Femoracetabular impingement alters hip and pelvic biomechanics during gait Walking biomechanics of FAI, Gait Posture, 30, pp. 41-44, (2009); Rylander J.H., Shu B., Andriacchi T.P., Safran M.R., Preoperative and postoperative sagittal plane hip kinematics in patients with femoracetabular during level walking, Am J Sports Med, 39, (2011); Hunt M.A., Gunether G.R., Gilbart M.K., Kinematic and kinetic differences during walking in patients with and without symptomatic femoroacetabular impingement, Clin Biomech (Bristol, Avon), 28, pp. 519-523, (2013); Brisson N., Lamontagne M., Kennedy M.J., Beaule P.E., The effects of cam femoroacetabular impingement corrective surgery on lower-extremity gait biomechanics, Gait Posture, 37, pp. 258-263, (2013); Lahner M., Walter P.A., Von Schulze Pellengahr C., Hagen M., Von Engelhardt L.V., Lukas C., Comparative study of the femoroacetabular impingement (FAI) prevalence in male semiprofessional and amateur soccer players, Arch Orthop Trauma Surg, (2014); Kassarjian A., Yoon L.S., Belzile E., Connolly S.A., Millis M.B., Palmer W.E., Triad of MR arthrographic findings in patients with cam-type femoroacetabular impingement, Radiology, 236, pp. 588-592, (2005); Hennig E.M., Cavanagh P.R., Albert H., Macmillan N.H., A piezoelectric method of measuring the vertical contact stress beneath the human foot, J Biomed Eng, 4, pp. 213-222, (1982); Milani T.L., Hennig E.M., Measurements of rearfoot motion during running, Sportverletz Sportschaden, 14, pp. 115-120, (2000); Lamontagne M., Kennedy M.J., Beaule P.E., The effect of cam FAI on hip and pelvic motion during maximum squat, Clin Orthop Relat, 467, pp. 645-650, (2009); Lahner M., Jahnke N.L., Zirke S., Teske W., Vetter G., Von Schulze Pellengahr C., Daniilidis K., Hagen M., Von Engelhardt L.V., The deviation of the mechanical leg axis correlates with an increased hip alpha angle and could be a predictor of femoroacetabular impingement, Int Orthop, 38, pp. 19-25, (2014)","M. Lahner; Department of Orthopaedic Surgery, Ruhr-University Bochum, St. Josef-Hospital, 44791 Bochum, Gudrunstr. 56, Germany; email: m.lahner@klinikum-bochum.de","","BioMed Central Ltd.","14712474","","","24628720","English","BMC Musculoskelet. Disord.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-84899074976" "Quagliarella L.; Sasanelli N.; Belgiovine G.; Accettura D.; Notarnicola A.; Moretti B.","Quagliarella, Livio (6603436884); Sasanelli, Nicola (57189195779); Belgiovine, Giuseppe (20733478100); Accettura, Domenico (57204033958); Notarnicola, Angela (23980743800); Moretti, Biagio (7003833156)","6603436884; 57189195779; 20733478100; 57204033958; 23980743800; 7003833156","Evaluation of counter movement jump parameters in young male soccer players","2011","Journal of Applied Biomaterials and Biomechanics","9","1","","40","46","6","12","10.5301/JABB.2011.7732","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955989698&doi=10.5301%2fJABB.2011.7732&partnerID=40&md5=5d5b92d3fe7d2b31c6ba000d39f41ecb","Biomedical Engineering Section, Department of Clinical Methodology and Medical-Surgical Technologies, Universityof Bari, Bari, Italy; Institute of Sports Medicine, Bari, Italy; Orthopedics and Traumatology Section, Department of Clinical Methodology and Medical-Surgical Technologies, University of Bari, Bari, Italy","Quagliarella L., Biomedical Engineering Section, Department of Clinical Methodology and Medical-Surgical Technologies, Universityof Bari, Bari, Italy; Sasanelli N., Biomedical Engineering Section, Department of Clinical Methodology and Medical-Surgical Technologies, Universityof Bari, Bari, Italy; Belgiovine G., Biomedical Engineering Section, Department of Clinical Methodology and Medical-Surgical Technologies, Universityof Bari, Bari, Italy; Accettura D., Institute of Sports Medicine, Bari, Italy; Notarnicola A., Orthopedics and Traumatology Section, Department of Clinical Methodology and Medical-Surgical Technologies, University of Bari, Bari, Italy; Moretti B., Orthopedics and Traumatology Section, Department of Clinical Methodology and Medical-Surgical Technologies, University of Bari, Bari, Italy","Purpose: The Counter Movement Jump (CMJ) is widely used as a feld test to evaluate the muscular explosive power of lower limbs in various sports, including soccer. The aim of the present study was to verify the possibility to discriminate the effect of training level and age on young adult male soccer players, adopting the fight time, the peak force, or the peak power obtained from a countermovement jump. Methods: One hundred and twenty three young male soccer players were enrolled in the study; the participants were split into groups according to Tanner's stages (pre- and post-pubertal) and training level (high and low activity). A piezoelectric force plate was used to acquire the ground reaction force used to calculate the fight time, the peak value of the vertical component of the ground reaction force, and the peak value of the developed power. Results: As expected, the best performances were obtained by the post pubertal highly-trained soccer players. All performance parameters presented statistically significant differences between ages, while only the fight time exhibited statistically significant differences between training levels. After normalization of the experimental data to body height and weight, there were no statistical differences between ages; statistically significant differences were found only for the fight time and for peak power between training levels. Conclusions: The fight time was the parameter more sensitive to detect differences in the jump performance related to training and age. Adopting a normalization procedure it was possible to highlight that only the fight time and the peak power are sensitive to training effects on young adult male soccer players.©2011 Societá Italiana Biomateriali.","Age; Counter movement jump; Soccer; Training level","Adolescent; Child; Energy Transfer; Humans; Leg; Male; Movement; Soccer; Task Performance and Analysis; adolescent; adult; adulthood; article; athlete; athletic performance; biomechanics; body height; body weight; child; controlled study; exercise intensity; flight; ground reaction force; human; human experiment; jumping; male; muscle force; muscle strength; muscle training; physical parameters; physical performance; piezoelectricity; plyometrics; prepuberty; school child; sensitivity and specificity","Bosco C., Komi P.V., Mechanical characteristics and fber composition of human leg extensor muscles, Eur J Appl Physiol, 41, pp. 275-284, (1979); Rothstein J.M., Muscle biology. 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Champaign, (2004); Philippaerts R.M., Vaeyens R., Janssens M., Et al., The relationship between peak height velocity and physical performance in youth soccer players, J Sports Sci, 24, pp. 221-230, (2006); Canavan P.K., Vescovi J.D., Evaluation of power prediction equations: Peak vertical jumping power in women, Med Sci Sports Exerc, 36, pp. 1589-1593, (2004); Duncan M.J., Lyons M., Nevill A.M., Evaluation of peak power prediction equations in male basketball players, J Strength Cond Res, 22, pp. 1379-1381, (2008); Hertogh C., Hue O., Jump evaluation of elite volleyball players using two methods: Jump power equations and force platform, J Sports Med Phys Fitness, 42, pp. 300-303, (2002); Sayers S.P., Harackiewicz D.V., Harman E.A., Frykman P.N., Rosenstein M.T., Cross-validation of three jump power equations, Med Sci Sports Exerc, 31, pp. 572-577, (1999); Lara A.J., Abian J., Alegre L.M., Jimenez L., Aguado X., Assessment of power output in jump tests for applicants to a sports sciences degree, J Sports Med Phys Fitness, 46, pp. 419-424, (2006); Reilly T., Williams A.M., Nevill A., Franks A., A multidisciplinary approach to talent identifcation in soccer, J Sports Sci, 18, pp. 695-702, (2000); Christou M., Smilios I., Sotiropoulos K., Volaklis K., Pilianidis T., Tokmakidis S P., Effects of resistance training on the physical capacities of adolescent soccer players, J Strength Cond Res, 20, pp. 783-791, (2006)","","","","17226899","","","21607936","English","J. Appl. Biomater. Biomech.","Article","Final","","Scopus","2-s2.0-79955989698" "Liao S.; Lynall R.C.; Mihalik J.P.","Liao, Steven (57111320000); Lynall, Robert C. (55346075000); Mihalik, Jason P. (8428192600)","57111320000; 55346075000; 8428192600","The Effect of Head Impact Location on Day of Diagnosed Concussion in College Football","2016","Medicine and Science in Sports and Exercise","48","7","","1239","1243","4","12","10.1249/MSS.0000000000000896","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84957916420&doi=10.1249%2fMSS.0000000000000896&partnerID=40&md5=a7b9d056404a091c81ba7ae454f47bee","Department of Exercise and Sport Science, Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, University of North Carolina, Chapel Hill, NC, United States; Department of Allied Health Sciences, School of Medicine, University of North Carolina, Chapel Hill, NC, United States","Liao S., Department of Exercise and Sport Science, Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, University of North Carolina, Chapel Hill, NC, United States; Lynall R.C., Department of Exercise and Sport Science, Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, University of North Carolina, Chapel Hill, NC, United States, Department of Allied Health Sciences, School of Medicine, University of North Carolina, Chapel Hill, NC, United States; Mihalik J.P., Department of Exercise and Sport Science, Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, University of North Carolina, Chapel Hill, NC, United States, Department of Allied Health Sciences, School of Medicine, University of North Carolina, Chapel Hill, NC, United States","Introduction Scientists and clinicians have attempted to identify and understand biomechanical factors that influence concussion likelihood. The effect of impact frequency to a given head location before the concussion has not been evaluated. The purpose of this study was to compare the frequency of impacts to a given head location on days of diagnosed concussion to the frequency of impacts to a given head location before kinematically matched nonconcussive impacts. Methods Head impact data were gathered from 33 Division I National Collegiate Athletic Association football players. Twenty-four concussions were identified and matched with impacts of similar kinematic and injury criterion values (linear acceleration, rotational acceleration, Gadd severity index, and head injury criterion) that occurred during the same event type (game, practice, or scrimmage). In addition, these same matching criteria were used to match all players to the closest kinematic/same player group. All impacts within a session before the impact of interest (concussive or matched impact) were analyzed. Results On days of diagnosed concussion, the concussive group sustained a lower percentage of impacts to the front of the head (34.5%) and a greater frequency of impacts to the sides (19.6%) and top (18.9%) of the head (χ2(3) = 10.23, P = 0.017) as compared with the matched nonconcussive group (front = 42.5%, sides = 16.6%, top = 14.0%). No significant difference in frequency was found in impacts to the back of the head. Conclusion It may be more difficult to mitigate concussive forces sustained in impacts to the top and sides of the head than the front of the head. These findings fall in line with previous research demonstrating that reduced impact magnitudes may lessen concussion risk. Studying appropriate training paradigms to develop safer playing techniques on the field is warranted. Copyright © 2016 by the American College of Sports Medicine. Unauthorized reproduction of this article is prohibited.","Brain injury; Concussion risk factors; Head impact biomechanics; Hit system","Acceleration; Biomechanical Phenomena; Brain Concussion; Football; Head; Humans; Universities; Young Adult; acceleration; biomechanics; brain concussion; football; head; human; injuries; pathology; university; young adult","Beckwith J.G., Greenwald R.M., Chu J.J., Measuring head kinematics in football: Correlation between the head impact telemetry system and Hybrid III headform, Ann Biomed Eng, 40, 1, pp. 237-248, (2012); Beckwith J.G., Greenwald R.M., Chu J.J., Head impact exposure sustained by football players on days of diagnosed concussion, Med Sci Sports Exerc, 45, 4, pp. 737-746, (2013); Beckwith J.G., Greenwald R.M., Chu J.J., Timing of concussion diagnosis is related to head impact exposure prior to injury, Med Sci Sports Exerc, 45, 4, pp. 747-754, (2013); Boden Breit B.I., Beachler J.A., Williams A., Mueller F.O., Fatalities in high school and college football players, Am J Sports Med, 41, 5, pp. 1108-1116, (2013); Broglio S., Schnebel B., Sosnoff J., Biomechanical properties of concussions in high school football, Med Sci Sports Exerc, 42, 11, pp. 2064-2071, (2010); Brolinson G., Manoogian S., McNeely D., Goforth M., Greenwald R., Duma S., Analysis of linear head accelerations from collegiate football impacts, Curr Sports Med Rep, 5, 1, pp. 23-28, (2006); Cobb B.R., Urban J.E., Davenport E.M., Head impact exposure in youth football: Elementary school ages 9-12 years and the effect of practice structure, Ann Biomed Eng, 41, 12, pp. 2463-2473, (2013); Covassin T., Swanik C.B., Sachs M.L., Sex differences and the incidence of concussions among collegiate athletes, J Athl Train, 38, 3, pp. 238-244, (2003); Crisco J.J., Wilcox B.J., Beckwith J.G., Head impact exposure in collegiate football players, J Biomech, 44, pp. 2673-2678, (2011); Crisco J.J., Chu J.J., Greenwald R.M., An algorithm for estimating acceleration magnitude and impact location using multiple nonorthogonal single-Axis accelerometers, J Biomech Eng, 126, 6, pp. 849-854, (2004); Crisco J.J., Fiore R., Beckwith J.G., Frequency and location of head impact exposures in individual collegiate football players, J Athl Train, 45, 6, pp. 549-559, (2010); Duma S.M., Manoogian S.J., Bussone W.R., Analysis of real-Time head accelerations in collegiate football players, Clin J Sport Med, 15, 1, pp. 3-8, (2005); Eckner J.T., Oh Y.K., Joshi M.S., Richardson J.K., Ashton-Miller J.A., Effect of neck muscle strength and anticipatory cervical muscle activation on the kinematic response of the head to impulsive loads, Am J Sports Med, 42, 3, pp. 566-576, (2014); Guskiewicz K.M., Mihalik J., Biomechanics of sport concussion: Quest for the elusive injury threshold, Exerc Sport Sci Rev, 39, 1, pp. 4-11, (2011); Guskiewicz K.M., Mihalik J., Shankar V., Measurement of head impacts in collegiate football players: Relationship between head impact biomechanics and acute clinical outcome after concussion, Neurosurgery, 61, 6, pp. 1244-1252, (2007); Harpham J.A., Mihalik J., Littleton A.C., Frank B.S., Guskiewicz K.M., The effect of visual and sensory performance on head impact biomechanics in college football players, Ann Biomed Eng, 42, 1, pp. 1-10, (2014); Kutcher J.S., Eckner J.T., At-risk populations in sports-related concussion, Curr Sports Med Rep, 9, 1, pp. 16-20, (2010); Langlois J., Rutland-Brown W., Wald M., The epidemiology and impact of traumatic brain injury: A brief overview, J Head Trauma Rehabil, 21, 5, pp. 375-378, (2006); Meehan W., Mannix R.C., O'Brien M.J., Collins M.W., The prevalence of undiagnosed concussions in athletes, Clin J Sport Med, 23, 5, pp. 339-342, (2013); Mihalik J., Bell D., Marshall S., Guskiewicz K., Measurement of head impacts in collegiate football players: An investigation of positional and event-Type differences, Neurosurgery, 61, 6, pp. 1229-1235, (2007); Mihalik J., Blackburn J.T., Greenwald R.M., Cantu R.C., Marshall S.W., Guskiewicz K.M., Collision type and player anticipation affect head impact severity among youth ice hockey players, Pediatrics, 125, 6, pp. e1394-e1401, (2010); Mihalik J., Guskiewicz K.M., Jeffries J.A., Greenwald R.M., Marshall S.W., Characteristics of head impacts sustained by youth ice hockey players, Proc Inst Mech Eng P J Sport Eng Technol, 222, 1, pp. 45-52, (2008); Mueller F.O., Cantu R.C., Catastrophic injuries and fatalities in high school and college sports, fall 1982-spring 1988, Med Sci Sports Exerc, 22, 6, pp. 737-741, (1990); Torg J.S., Guille J.T., Jaffe S., Injuries to the cervical spine in American football players, J Bone Joint Surg Am, 84, 1, pp. 112-122, (2002); Torg J.S., Quedenfeld T.C., Burstein A., Spealman A., Nichols C., National football head and neck injury registry: Report on cervical quadriplegia, 1971 to 1975, Am J Sports Med, 7, 2, pp. 127-132, (1979)","J.P. Mihalik; Department of Exercise and Sport Science, Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, University of North Carolina, Chapel Hill, United States; email: jmihalik@email.unc.edu","","Lippincott Williams and Wilkins","01959131","","MSCSB","26871990","English","Med. Sci. Sports Exerc.","Article","Final","","Scopus","2-s2.0-84957916420" "Marencakova J.; Maly T.; Sugimoto D.; Gryc T.; Zahalka F.","Marencakova, Jitka (57190304815); Maly, Tomas (35102864300); Sugimoto, Dai (55260780400); Gryc, Tomas (36717639400); Zahalka, Frantisek (36718411000)","57190304815; 35102864300; 55260780400; 36717639400; 36718411000","Foot typology, body weight distribution, and postural stability of adolescent elite soccer players: A 3-year longitudinal study","2018","PLoS ONE","13","9","e0204578","","","","12","10.1371/journal.pone.0204578","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054072393&doi=10.1371%2fjournal.pone.0204578&partnerID=40&md5=b4cc0c1ec39951cb9393f393c9153ea6","Sport Research Center, Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic; Orthopedic Center, Children’s Hospital Boston, Boston, United States; Micheli Center for Sports Injury Prevention, Waltham, United States; Department of Orthopaedic Surgery, Harvard Medical School, Boston, United States","Marencakova J., Sport Research Center, Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic; Maly T., Sport Research Center, Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic; Sugimoto D., Orthopedic Center, Children’s Hospital Boston, Boston, United States, Micheli Center for Sports Injury Prevention, Waltham, United States, Department of Orthopaedic Surgery, Harvard Medical School, Boston, United States; Gryc T., Sport Research Center, Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic; Zahalka F., Sport Research Center, Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic"," Objective The unique foot morphology and distinctive functions facilitate complex tasks and strategies such as standing, walking, and running. In those weight-bearing activities, postural stability (PS) plays an important role. Correlations among foot type, PS, and other musculoskeletal problems that increase sport injury risk are known. However, long-term associations among the foot type, the PS, and body weight (BW) distribution are lacking. Thus, the purpose of this study was to longitudinally identify changes in foot morphology, PS, and symmetry in BW distribution during adolescence among elite male soccer players. Methods Thirty-five Czech elite male soccer players (age, 15.49 ± 0.61 years; BW, 64.11 ± 6.16 kg; body height, 174.62 ± 5.71 cm) underwent foot type, PS, and BW distribution measurements during 3 consecutive years (T1, T2, T3). The Chippaux-Smirak index (CSI), BW distribution, and centre of pressure (COP) displacement (total traveled way [TTW]) of each player for the preferred (PL) and non-preferred leg (NL) were acquired. Repeated-measures analysis of variance (RM ANOVA), Bonferroni´s post hoc tests, and partial eta-squared (η p 2 ) coefficient were used for investigating the effect of time on selected variables and effect size evaluation. Results Statistically significant effect of time on CSI values (PL: F 2,68 = 5.08, p < 0.01, η p 2 = 0.13 and NL: F 2,68 = 10.87, p < 0.01, η p 2 = 0.24) and COP displacement values (PL: F 2,68 = 5.07, p < 0.01, η p 2 = 0.13; NL: F 2,68 = 3.53, p <0.05, η p 2 = 0.09) for both legs over 3-years period was identified. Furthermore, the Bonferroni´s post hoc analysis revealed a significant improvement of PS values in the PL (TTW T1 = 1617.11 ± 520.22 mm vs. TTW T2 = 1405.29 ± 462.76, p < 0.05; and between TTW T1 = 1617.11 ± 520.22 mm vs. TTW T3 = 1370.46 ± 373.94, p < 0.05). Only BW distribution parameter showed no significant differences, although slightly improved over time. Conclusions We observed changes in foot typology, PS, and BW distribution in young elite male soccer players during 3 consecutive years. Results demonstrated that changes in PS and body weight distribution under the high-load sport conditions during adolescence may improve with aging, except for foot morphology. Therefore, foot morphology should be carefully monitored to minimize sport injury risk in professional young soccer players during adolescence. Further research is necessary to determine more clear associations between these parameters, soccer-related injuries, and sport performances. © 2018 Marencakova et al. 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Klementa J., Somatometrie Nohy, (1987); Cheng P.T., Wu S.H., Liaw M.Y., Wong A.M., Tang F.T., Symmetrical body-weight distribution training in stroke patients and its effect on fall prevention, Arch Phys Med Rehabil, 82, pp. 1650-1654, (2001); Fousekis K., Tsepis E., Vagenas G., Lower limb strength in professional soccer players: Profile, asymmetry, and training age, J Sports Sci Med, 9, pp. 364-373, (2010); Haendlmayer K.T., Harris N.J., Flatfoot deformity: An overview, Orthop Trauma, 23, pp. 395-403, (2009); Earls J., Born to Walk: Myofascial Efficiency and The Body in Movement, (2014); Mala L., Maly T., Zahalka F., Postural performance in the bipedal and unipedal stance of elite soccer players in different age categories, Acta Kinesiol, 11, pp. 101-105, (2017); Paillard T., Noe F., Riviere T., Marion V., Montoya R., Dupui P., Postural performance and strategy in the unipedal stance of soccer players at different levels of competition, J Athl Train, 41, pp. 172-176, (2006)","T. Maly; Sport Research Center, Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic; email: maly@ftvs.cuni.cz","","Public Library of Science","19326203","","POLNC","30265689","English","PLoS ONE","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85054072393" "Fransz D.P.; Huurnink A.; de Boode V.A.; Kingma I.; van Dieën J.H.","Fransz, Duncan P. (55627058400); Huurnink, Arnold (25225892400); de Boode, Vosse A. (56578823200); Kingma, Idsart (7006133287); van Dieën, Jaap H. (7005065606)","55627058400; 25225892400; 56578823200; 7006133287; 7005065606","The effect of the stability threshold on time to stabilization and its reliability following a single leg drop jump landing","2016","Journal of Biomechanics","49","3","","496","501","5","13","10.1016/j.jbiomech.2015.12.048","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84954288351&doi=10.1016%2fj.jbiomech.2015.12.048&partnerID=40&md5=29bde058f8a2a549b222707a8cec2186","MOVE Research Institute Amsterdam, Department of Human Movement Sciences, VU University, Amsterdam, Netherlands; Department of Orthopaedic Surgery, Atrium Medical Center, Heerlen, Netherlands; Department of Nuclear Medicine, Academic Medical Center, Amsterdam, Netherlands; Adidas miCoach Performance Centre, AFC Ajax, Amsterdam, Netherlands","Fransz D.P., MOVE Research Institute Amsterdam, Department of Human Movement Sciences, VU University, Amsterdam, Netherlands, Department of Orthopaedic Surgery, Atrium Medical Center, Heerlen, Netherlands; Huurnink A., MOVE Research Institute Amsterdam, Department of Human Movement Sciences, VU University, Amsterdam, Netherlands, Department of Nuclear Medicine, Academic Medical Center, Amsterdam, Netherlands; de Boode V.A., Adidas miCoach Performance Centre, AFC Ajax, Amsterdam, Netherlands; Kingma I., MOVE Research Institute Amsterdam, Department of Human Movement Sciences, VU University, Amsterdam, Netherlands; van Dieën J.H., MOVE Research Institute Amsterdam, Department of Human Movement Sciences, VU University, Amsterdam, Netherlands","We aimed to provide insight in how threshold selection affects time to stabilization (TTS) and its reliability to support selection of methods to determine TTS.Eighty-two elite youth soccer players performed six single leg drop jump landings. The TTS was calculated based on four processed signals: raw ground reaction force (GRF) signal (RAW), moving root mean square window (RMS), sequential average (SA) or unbounded third order polynomial fit (TOP). For each trial and processing method a wide range of thresholds was applied. Per threshold, reliability of the TTS was assessed through intra-class correlation coefficients (ICC) for the vertical (V), anteroposterior (AP) and mediolateral (ML) direction of force. Low thresholds resulted in a sharp increase of TTS values and in the percentage of trials in which TTS exceeded trial duration. The TTS and ICC were essentially similar for RAW and RMS in all directions; ICC's were mostly 'insufficient' (<0.4) to 'fair' (0.4-0.6) for the entire range of thresholds. The SA signals resulted in the most stable ICC values across thresholds, being 'substantial' (>0.8) for V, and 'moderate' (0.6-0.8) for AP and ML. The ICC's for TOP were 'substantial' for V, 'moderate' for AP, and 'fair' for ML. The present findings did not reveal an optimal threshold to assess TTS in elite youth soccer players following a single leg drop jump landing. Irrespective of threshold selection, the SA and TOP methods yielded sufficiently reliable TTS values, while for RAW and RMS the reliability was insufficient to differentiate between players. © 2016 Elsevier Ltd.","Dynamic; Force plate; Force platform; Outcome measure; Postural control","Adolescent; Body Weight; Child; Exercise; Humans; Leg; Postural Balance; Reproducibility of Results; Signal Processing, Computer-Assisted; Soccer; Software; Sports; Stress, Mechanical; Biophysics; Drops; Dynamics; Reliability; Sports; Correlation coefficient; Force plate; Force platform; Ground reaction forces; Outcome measures; Postural control; Stability thresholds; Threshold selection; adolescent; adult; Article; athlete; biomechanics; body weight; child; controlled study; correlation coefficient; ground reaction force; human; human experiment; jumping; neuromuscular function; normal human; priority journal; reliability; task performance; time to stabilization; body equilibrium; exercise; leg; mechanical stress; physiology; reproducibility; signal processing; soccer; software; sport; Stabilization","Brown C.N., Ross S.E., Mynark R., Guskiewicz K.M., Assessing functional ankle instability with joint position sense, time to stabilization, and electromyography, J. Sport Rehabil., 13, pp. 122-134, (2004); Colby S.M., Hintermeister R.A., Torry M.R., Steadman J.R., Lower limb stability with ACL impairment, J. Orthop. Sports Phys. Ther., 29, pp. 444-451, (1999); DiStefano L.J., Padua D.A., Blackburn J.T., Garrett W.E., Guskiewicz K.M., Marshall S.W., Integrated injury prevention program improves balance and vertical jump height in children, J. Strength Cond. Res., 24, pp. 332-342, (2010); Ebben W.P., Vanderzanden T., Wurm B.J., Petushek E.J., Evaluating plyometric exercises using time to stabilization, J. Strength Cond. Res., 24, pp. 300-306, (2010); Flanagan E.P., Ebben W.P., Jensen R.L., Reliability of the reactive strength index and time to stabilization during depth jumps, J. Strength Cond. Res., 22, pp. 1677-1682, (2008); Fransz D.P., Huurnink A., de Boode V.A., Kingma I., van Dieen J.H., Time to stabilization in single leg drop jump landings: an examination of calculation methods and assessment of differences in sample rate, filter settings and trial length on outcome values, Gait Posture, 41, pp. 63-69, (2015); Fransz D.P., Huurnink A., Kingma I., van Dieen J.H., How does postural stability following a single leg drop jump landing task relate to postural stability during a single leg stance balance task?, J. Biomech., 47, pp. 3248-3253, (2014); Fransz D.P., Huurnink A., Kingma I., Verhagen E.A.L.M., van Dieen J.H., A systematic review and meta-analysis of dynamic tests and related force plate parameters used to evaluate neuromusculoskeletal function in foot and ankle pathology, Clin. Biomech., 28, pp. 591-601, (2013); Huurnink A., Fransz D.P., Kingma I., van Dieen J.H., Comparison of a laboratory grade force platform with a Nintendo Wii Balance Board on measurement of postural control in single-leg stance balance tasks, J. Biomech., 46, pp. 1392-1395, (2013); Ross S.E., Guskiewicz K.M., Time to stabilization: a method for analyzing dynamic postural stability, Athl. Ther. Today, 8, pp. 37-39, (2003); Ross S.E., Guskiewicz K.M., Yu B., Single-leg jump-landing stabilization times in subjects with functionally unstable ankles, J. Athl. Train., 40, pp. 298-304, (2005); Shaw M.Y., Gribble P.A., Frye J.L., Ankle bracing, fatigue, and time to stabilization in collegiate volleyball athletes, J. Athl. Train., 43, pp. 164-171, (2008); Shrout P.E., Measurement reliability and agreement in psychiatry, Stat. Methods Med. Res., 7, pp. 301-317, (1998); Svensson M., Drust B., Testing soccer players, J. Sports Sci., 23, pp. 601-618, (2005); Tulloch E., Phillips C., Sole G., Carman A., Abbott J.H., DMA Clinical Pilates Directional-Bias Assessment: Reliability and Predictive Validity, J. Orthop. Sports Phys. Ther., 42, pp. 676-687, (2012); de Vet H.C.W., Terwee C.B., Knol D.L., Bouter L.M., When to use agreement versus reliability measures, J. Clin. Epidemiol., 59, pp. 1033-1039, (2006); Wikstrom E.A., Tillman M.D., Smith A.N., Borsa P.A., A new force-plate technology measure of dynamic postural stability: The dynamic postural stability index, J. Athl. Train., 40, pp. 305-309, (2005); Witchalls J., Blanch P., Waddington G., Adams R., Intrinsic functional deficits associated with increased risk of ankle injuries: a systematic review with meta-analysis, Br. J. Sport. Med., 46, pp. 515-523, (2012)","D.P. Fransz; MOVE Research Institute Amsterdam, Department of Human Movement Sciences, Amsterdam, Van der Boechorststraat 9, 1081 BT, Netherlands; email: dpfransz@gmail.com","","Elsevier Ltd","00219290","","JBMCB","26777604","English","J. Biomech.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84954288351" "Dixon S.J.; James I.T.; Blackburn K.; Pettican N.; Low D.","Dixon, S.J. (57203056377); James, I.T. (57204025716); Blackburn, K. (22133258700); Pettican, N. (57191449649); Low, D. (56046523800)","57203056377; 57204025716; 22133258700; 57191449649; 56046523800","Influence of footwear and soil density on loading within the shoe and soil surface during running","2008","Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","222","1","","1","10","9","16","10.1243/17543371JSET16","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84990328128&doi=10.1243%2f17543371JSET16&partnerID=40&md5=ee370205abed0cc16612397c7876c144","Exeter Biomechanics Research Team, School of Sport and Health Sciences, University of Exeter, Exeter, United Kingdom; Centre for Sports Surface Technology, School of Applied Sciences, Cranfield University, Cranfield, United Kingdom","Dixon S.J., Exeter Biomechanics Research Team, School of Sport and Health Sciences, University of Exeter, Exeter, United Kingdom; James I.T., Centre for Sports Surface Technology, School of Applied Sciences, Cranfield University, Cranfield, United Kingdom; Blackburn K., Centre for Sports Surface Technology, School of Applied Sciences, Cranfield University, Cranfield, United Kingdom; Pettican N., Centre for Sports Surface Technology, School of Applied Sciences, Cranfield University, Cranfield, United Kingdom; Low D., Exeter Biomechanics Research Team, School of Sport and Health Sciences, University of Exeter, Exeter, United Kingdom","Using pressure transducers in soil surfaces prepared in controlled conditions, the vertical stress was recorded at 100 mm, 200 mm, and 350 mm depth within two soil surfaces of 1460 kg/m3 and 1590 kg/m3 for five subjects of 747–843 N body weight running at 4 m/s (5 per cent). Simultaneous in-shoe pressure data were collected to investigate the influence of soil density on loading experienced by the player and to provide information on the load applied to the surface. For each soil density, the subjects wore three different footwear types: soccer boots with traditional studs, boots with moulded studs, and boots designed for synthetic turf. For the mean of all subjects, there was no significant difference in the maximum vertical soil stress or loading rate between surfaces at any depth but within each surface there was a significant reduction of 32 kPa between –100 mm and the other depths. The peak loading rate was two orders of magnitude greater at –100 mm than at –200 mm or –350 mm. The variation in maximum vertical stress at –100 mm for different subjects was significant (p<0.001) and increased with increasing subject weight (R2 = 0.87); at –200 mm and –350 mm there was no significant subject or density effect; a similar pattern was observed with the peak loading rate, with a linear relationship between the loading rate and the subject weight. In-shoe pressure data revealed no significant differences in the peak force or loading rate between surfaces, but a significantly lower heel pressure for the soft (1460 kg/m3) surface compared with the hard (1590 kg/m3) surface (p<0.05). Wearing of different footwear had no influence on the peak force or pressure but revealed a lower rate of loading of force for the moulded boot than for the studded boot when performing on the hard surface. There was a low and non-significant relationship between the peak input force and the peak force experienced within the surface (R2 = 0.01; p > 0.05), however, peak resultant pressure data were used successfully to model the vertical stress distribution during running using a linear elastic model of soil behaviour. This novel approach to understanding the behaviour of the soil surface and the player has revealed a complex relationship between the input load and the load experienced by the surface. Future models will seek to understand this relationship further. © 2008, Institution of Mechanical Engineers. All rights reserved.","biomechanics; footwear; natural turf; running; soil mechanics; sports surface engineering; stress distribution","","Baker S.W., Gibbs R.J., Adams W.A., Case studies of the performance of different designs of winter games pitches, J. Sports Turf Res. Inst., 68, pp. 20-32, (1992); Newell A.J., Hart-Woods J.C., Wood A.D., Effects of four different levels of shade on the performance of three grass mixtures for use in lawn tennis courts, J. Turfgrass Science, 75, pp. 82-88, (1999); Dixon S.J., Collop A.C., Butt M.E., Compensatory adjustments in lower extremity kinematics in response to a reduced cushioning of the impact interface in heel-toe running, Sports Engng, 8, pp. 47-56, (2005); Godwin R.J., Spoor G., Soil failure with narrow lines, J. Agri. Engng Res, 22, pp. 213-218, (1977); Clarke T.E., Frederick E.C., Cooper L.B., Biomechanical measurement of running shoe cushioning properties, Biomechanical aspects of sport shoes and playing surfaces, pp. 25-34, (1983); Nigg B.M., Bahlsen H.A., Luethi S.M., Stokes S., The influence of running velocity and midsole hardness on external impact forces in heel—toe running, J. Biomechanics, 20, pp. 951-959, (1987); de Wit B., De Clercq D., Lonoir M., The effect of varying midsole hardness on impact forces and foot motion during foot contact in running, J. Appl. Biomechanics, 11, pp. 395-405, (1995); Lake M.J., Determining the protective function of footwear, Ergonomics, 43, pp. 1610-1621, (2000); Challis J., The variability in running gait caused by force plate targeting, J. Appl. Biomechanics, 17, pp. 77-83, (2001); Alexandrou A., Earl R., The relationship among precompaction stress, volumetric water content and initial dry bulk density of soil, J. Agri. Engng Res., 71, pp. 75-80, (1998); Ansorge D., Godwin R., The effect of tyres and a rubber track at high axle loads on soil compaction, Part 1: Single axle studies, Biosystems Engng, 98, pp. 115-126, (2007); Young C., Fleming P., A review of mechanical impact testing devices for sport surfaces, (2007); Muir-Wood D., Geotechnical modelling, (2004); Skempton A., Bjerrum L., A contribution to the settlement analysis of foundations on clay, Geotechnique, 7, pp. 168-178, (1957); Stiles V.H., Dixon S.J., James I.T., An initial investigation of human-natural turf interaction in the laboratory, The engineering of sport 6, 3, pp. 255-260, (2006); Dixon S.J., Batt M.E., Collop A.C., Artificial playing surfaces research: A review of medical, engineering and biomechanical aspects, Int. J. Sports Medicine, 20, pp. 209-218, (1999); Clingham R.T., Arnold G.P., Drew T.S., Coohrane L., Abboud R.J., Do you get value for money when you buy an expensive pair of running shoes?, Br. J. Sports Medicine, (2007); Dura J.V., Hoyos J.V., Lozano L., Martinez A., The effect of shock absorbing sports surfaces in jumping, Sports Engng, 2, pp. 103-108, (1999); Tillman M.D., Fiolkowski P., Bauer P., Reisinger K.D., In-shoe plantar measurements during running on different surfaces: Changes in temporal and kinetic aspects, Sports Engng, 5, pp. 121-128, (2002); Dixon S.J., Stiles V.H., Shoe-surface interaction in tennis, Sports Engng, 6, pp. 1-10; De Cock A., De Clercq D., Willems T., Witvrouw E., Temporal characteristics of foot roll-over during barefoot jogging: Reference data for young adults, Gait Posture, 21, 4, pp. 432-439, (2005)","","","","17543371","","","","English","Proc. Inst. Mech. Eng. Part P J. Sports Eng. Technol.","Article","Final","","Scopus","2-s2.0-84990328128" "Bastiaansen B.J.C.; Wilmes E.; Brink M.S.; de Ruiter C.J.; Savelsbergh G.J.P.; Steijlen A.; Jansen K.M.B.; van der Helm F.C.T.; Goedhart E.A.; van der Laan D.; Vegter R.J.K.; Lemmink K.A.P.M.","Bastiaansen, Bram J. C. (57216645857); Wilmes, Erik (57216648924); Brink, Michel S. (24469949200); de Ruiter, Cornelis J. (7006550668); Savelsbergh, Geert J. P. (56250040000); Steijlen, Annemarijn (57205529526); Jansen, Kaspar M. B. (35324197100); van der Helm, Frans C. T. (7003729104); Goedhart, Edwin A. (55311915500); van der Laan, Doris (57217121485); Vegter, Riemer J. K. (55345744400); Lemmink, Koen A. P. M. (6603663944)","57216645857; 57216648924; 24469949200; 7006550668; 56250040000; 57205529526; 35324197100; 7003729104; 55311915500; 57217121485; 55345744400; 6603663944","An inertial measurement unit based method to estimate hip and knee joint kinematics in team sport athletes on the field","2020","Journal of Visualized Experiments","2020","159","e60857","1","8","7","15","10.3791/60857","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086328510&doi=10.3791%2f60857&partnerID=40&md5=deab72298a7a1e7e5178d09a228bd9f2","Center for Human Movement Sciences, University Medical Center, University of Groningen, Netherlands; Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Netherlands; Emerging Materials, Department of Design Engineering, Delft University of Technology, Netherlands; Department of Biomechanical Engineering, Delft University of Technology, Netherlands; FIFA Medical Center, Royal Netherlands Football Association, Netherlands; Royal Dutch Hockey Association, Netherlands","Bastiaansen B.J.C., Center for Human Movement Sciences, University Medical Center, University of Groningen, Netherlands; Wilmes E., Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Netherlands; Brink M.S., Center for Human Movement Sciences, University Medical Center, University of Groningen, Netherlands; de Ruiter C.J., Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Netherlands; Savelsbergh G.J.P., Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Netherlands; Steijlen A., Emerging Materials, Department of Design Engineering, Delft University of Technology, Netherlands; Jansen K.M.B., Emerging Materials, Department of Design Engineering, Delft University of Technology, Netherlands; van der Helm F.C.T., Department of Biomechanical Engineering, Delft University of Technology, Netherlands; Goedhart E.A., FIFA Medical Center, Royal Netherlands Football Association, Netherlands; van der Laan D., Royal Dutch Hockey Association, Netherlands; Vegter R.J.K., Center for Human Movement Sciences, University Medical Center, University of Groningen, Netherlands; Lemmink K.A.P.M., Center for Human Movement Sciences, University Medical Center, University of Groningen, Netherlands","Current athlete monitoring practice in team sports is mainly based on positional data measured by global positioning or local positioning systems. The disadvantage of these measurement systems is that they do not register lower extremity kinematics, which could be a useful measure for identifying injury-risk factors. Rapid development in sensor technology may overcome the limitations of the current measurement systems. With inertial measurement units (IMUs) securely fixed to body segments, sensor fusion algorithms and a biomechanical model, joint kinematics could be estimated. The main purpose of this article is to demonstrate a sensor setup for estimating hip and knee joint kinematics of team sport athletes in the field. Five male subjects (age 22.5 ± 2.1 years; body mass 77.0 ± 3.8 kg; height 184.3 ± 5.2 cm; training experience 15.3 ± 4.8 years) performed a maximal 30-meter linear sprint. Hip and knee joint angles and angular velocities were obtained by five IMUs placed on the pelvis, both thighs and both shanks. Hip angles ranged from 195° (± 8°) extension to 100.5° (± 8°) flexion and knee angles ranged from 168.6° (± 12°) minimal flexion and 62.8° (± 12°) maximal flexion. Furthermore, hip angular velocity ranged between 802.6 °·s-1 (± 192 °·s-1) and-674.9 °·s-1 (± 130 °·s-1). Knee angular velocity ranged between 1155.9 °·s-1 (± 200 °·s-1) and-1208.2 °·s-1 (± 264 °·s-1). The sensor setup has been validated and could provide additional information with regard to athlete monitoring in the field. This may help professionals in a daily sports setting to evaluate their training programs, aiming to reduce injury and optimize performance. © 2020 Journal of Visualized Experiments.","Athletes; Behavior; Hockey; Inertial measurement units; Injury prevention; Issue 159; Kinematics; Lower extremity; Performance enhancement; Running; Smart textiles; Soccer","Athletes; Biomechanical Phenomena; Hip Joint; Humans; Knee Joint; Male; Mechanical Phenomena; Young Adult; athlete; biomechanics; hip; human; knee; male; mechanics; physiology; young adult","Bradley P.S., Et al., High-intensity running in English FA Premier League soccer matches, Journal of Sports Sciences, 27, 2, pp. 159-168, (2009); Di Salvo V., Et al., Performance characteristics according to playing position in elite soccer, International Journal of Sports Medicine, 28, 3, pp. 222-227, (2007); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, Journal of Sports Sciences, 21, 7, pp. 519-528, (2003); Rampinini E., Coutts A.J., Castagna C., Sassi R., Impellizzeri F.M., Variation in top level soccer match performance, International Journal of Sports Medicine, 28, 12, pp. 1018-1024, (2007); McGuinness A., Malone S., Hughes B., Collins K., Passmore D., Physical Activity and Physiological Profiles of Elite International Female Field Hockey Players Across the Quarters of Competitive Match Play, Journal of Strength and Conditioning Research, 33, 9, pp. 2513-2522, (2019); Ihsan M., Et al., Running Demands and Activity Profile of the New Four-Quarter Match Format in Men's Field Hockey, Journal of Strength and Conditioning Research, (2018); Wallace J.L., Norton K.I., Evolution of World Cup soccer final games 1966-2010: Game structure, speed and play patterns, Journal of Science and Medicine in Sport, 17, 2, pp. 223-228, (2014); Barnes C., Archer D.T., Hogg B., Bush M., Bradley P.S., The Evolution of Physical and Technical Performance Parameters in the English Premier League, International Journal of Sports Medicine, 35, 13, pp. 1095-1100, (2014); Smith D.J., A framework for understanding the training process leading to elite performance, Sports Medicine, 33, 15, pp. 1103-1126, (2003); Soligard T., Et al., How much is too much? 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Enschede., pp. 1-7, (2009); Roetenberg D., Slycke P.J., Veltink P.H., Ambulatory position and orientation tracking fusing magnetic and inertial sensing, IEEE Transactions on Biomedical Engineering, 54, 5, pp. 883-890, (2007); Madgwick S.O., Harrison A.J., Vaidyanathan A., Estimation of IMU and MARG orientation using a gradient descent algorithm, Proceedings of IEEE International Conference on Rehabilitation Robotics, (2011); Diebel J., Representing Attitude: Euler Angles, Unit Quaternions, and Rotation Vectors, Matrix., 58, 15-16, pp. 1-35, (2006); Struzik A., Et al., Relationship between Lower Limb Angular Kinematic Variables and the Effectiveness of Sprinting during the Acceleration Phase, Applied Bionics and Biomechanics, 9, (2016); Struzik A., Et al., Relationship between lower limbs kinematic variables and effectiveness of sprint during maximum velocity phase, Acta of Bioengineering and Biomechanics, 17, 4, pp. 131-138, (2015); Higashihara A., Nagano Y., Ono T., Fukubayashi T., Differences in hamstring activation characteristics between the acceleration and maximum-speed phases of sprinting, Journal of Sports Sciences, 36, 12, pp. 1313-1318, (2018); Wilmes E., Et al., Inertial Sensor-Based Motion Tracking in Football with Movement Intensity Quantification, Sensors (Basel), 20, 9, (2020); Camomilla V., Bergamini E., Fantozzi S., Vannozzi G., Trends Supporting the In-Field Use of Wearable Inertial Sensors for Sport Performance Evaluation: A Systematic Review, Sensors, 18, 3, (2018); Camomilla V., Dumas R., Cappozzo A., Human movement analysis: The soft tissue artefact issue, Journal of Biomechanics, 62, pp. 1-4, (2017); Robert-Lachaine X., Mecheri H., Larue C., Plamondon A., Effect of local magnetic field disturbances on inertial measurement units accuracy, Applied Ergonomics, 63, pp. 123-132, (2017); Small K., McNaughton L.R., Greig M., Lohkamp M., Lovell R., Soccer fatigue, sprinting and hamstring injury risk, International Journal of Sports Medicine, 30, 8, pp. 573-578, (2009); Wdowski M.M., Gittoes M.J.R., First-stance phase force contributions to acceleration sprint performance in semi-professional soccer players, European Journal of Sport Science, pp. 1-23, (2019); Bezodis N.E., North J.S., Razavet J.L., Alterations to the orientation of the ground reaction force vector affect sprint acceleration performance in team sports athletes, Journal of Sports Sciences, 35, 18, pp. 1-8, (2017); Hreljac A., Impact and overuse injuries in runners, Medicine & Science in Sports & Exercise, 36, 5, pp. 845-849, (2004); Willy R.W.R., In-field gait retraining and mobile monitoring to address running biomechanics associated with tibial stress fracture, Scandinavian Journal of Medicine & Science in Sports, 26, 2, pp. 197-205, (2016); van der Worp H., Vrielink J.W., Bredeweg S.W., Do runners who suffer injuries have higher vertical ground reaction forces than those who remain injury-free? A systematic review and meta-analysis, British Journal of Sports Medicine, 50, 8, pp. 450-457, (2016); Napier C.C., Kinetic risk factors of running-related injuries in female recreational runners, Scandinavian Journal of Medicine & Science in Sports, 28, 10, pp. 2164-2172, (2018); Wundersitz D.W., Netto K.J., Aisbett B., Gastin P.B., Validity of an upper-body-mounted accelerometer to measure peak vertical and resultant force during running and change-of-direction tasks, Sports Biomechanics, 12, 4, pp. 403-412, (2013); Nedergaard N.J., Et al., The Relationship Between Whole-Body External Loading and Body-Worn Accelerometry During Team-Sport Movements, International Journal of Sports Physiology and Performance, 12, 1, pp. 18-26, (2017); Lundgardh F., Svensson K., Alricsson M., Epidemiology of hip and groin injuries in Swedish male first football league, Knee Surgery, Sports Traumatology, Arthroscopy, pp. 1-8, (2019); Werner J., Hagglund M., Ekstrand J., Walden M., Hip and groin time-loss injuries decreased slightly but injury burden remained constant in men's professional football: The 15-year prospective UEFA Elite Club Injury Study, British Journal of Sports Medicine, 53, 9, pp. 539-546, (2019); Werner J., Hagglund M., Walden M., Ekstrand J., UEFA injury study: A prospective study of hip and groin injuries in professional football over seven consecutive seasons, British Journal of Sports Medicine, 43, 13, pp. 1036-1040, (2009); Havens K.L., Sigward S.M., Whole body mechanics differ among running and cutting maneuvers in skilled athletes, Gait & Posture, 42, 3, pp. 240-245, (2015); Charnock B.L., Lewis C.L., Garrett W.E., Queen R.M., Adductor longus mechanics during the maximal effort soccer kick, Sports Biomechanics, 8, 3, pp. 223-234, (2009); Nunome H., Inoue K., Watanabe K., Iga T., Akima H., Dynamics of submaximal effort soccer instep kicking, Journal of Sports Sciences, 36, 22, pp. 2588-2595, (2018); Kellis E., Katis A., Vrabas I.S., Effects of an intermittent exercise fatigue protocol on biomechanics of soccer kick performance, Scandinavian Journal of Medicine & Science in Sports, 16, 5, pp. 334-344, (2006)","B.J.C. Bastiaansen; Center for Human Movement Sciences, University Medical Center, University of Groningen, Netherlands; email: b.j.c.bastiaansen@umcg.nl","","Journal of Visualized Experiments","1940087X","","","32538899","English","J. Visualized Exp.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-85086328510" "Blache Y.; Monteil K.","Blache, Y. (36508468800); Monteil, K. (6505900223)","36508468800; 6505900223","Contralateral strength imbalance between dominant and non-dominant lower limb in soccer players","2012","Science and Sports","27","3","","e1","","","13","10.1016/j.scispo.2011.08.002","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84862331733&doi=10.1016%2fj.scispo.2011.08.002&partnerID=40&md5=32adac6941b0dac4552188345e8d486c","Centre de recherche et d'innovation sur le sport (CRIS), Université Claude-Bernard, Lyon-1, 69622 Villeurbanne cedex, 27-29, boulevard du 11-Novembre-1918, France","Blache Y., Centre de recherche et d'innovation sur le sport (CRIS), Université Claude-Bernard, Lyon-1, 69622 Villeurbanne cedex, 27-29, boulevard du 11-Novembre-1918, France; Monteil K., Centre de recherche et d'innovation sur le sport (CRIS), Université Claude-Bernard, Lyon-1, 69622 Villeurbanne cedex, 27-29, boulevard du 11-Novembre-1918, France","Objective: The aims of this study were firstly to determine if knee extensor and flexor muscle contralateral strength imbalances were present in soccer players and secondly to establish the influence of playing positions on contralateral strength imbalances. Methods: The knee extensor and flexor muscle concentric strength of 20 volunteer recreational soccer players were tested using leg extensor and leg curl devices respectively. The load-velocity relationships were established for knee extensor and flexor muscles on the dominant lower limb (DL) and the non-dominant lower limb (NDL). Results: Regardless of playing position, participants presented significant strength imbalances between the DL and the NDL for knee extensor and flexor muscles at 40% and 60% of maximal strength. When playing position was taken into consideration, axial players had a greater knee extensor muscle contralateral strength imbalance than side players, while side players had a greater knee flexor muscle contralateral strength imbalance than axial players. All of the strength imbalances were observed at intensities specific to soccer game actions (jumps, sprints, and shots). The playing position has probably an influence on the contralateral strength imbalance of the knee flexor and extensor muscles. © 2011 Elsevier Masson SAS.","Asymmetry; Biomechanics; Force; Hamstrings; Leg; Quadriceps","adult; article; athlete; body position; concentric muscle contraction; devices; human; human experiment; knee muscle extensor; knee muscle flexor; leg; leg curl device; leg extensor device; leg muscle; muscle strength; normal human; priority journal; weight bearing","Zakas A., Bilateral isokinetic peak torque of quadriceps and hamstring muscles in professional soccer players with dominance on one or both two sides, J Sports Med Phys Fitness, 46, pp. 28-35, (2006); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer. An update, Sports Med, 35, pp. 501-506, (2005); Soderman K., Alfredson H., Pietila T., Werner S., Risk factors for leg injuries in female soccer players: a prospective investigation during one out-door season, Knee Surg Sports Traumatol Arthrosc, 9, pp. 313-321, (2001); Newton R.U., Et al., Determination of functional strength imbalance of the lower extremities, J Strength Cond Res, 20, pp. 971-977, (2006); Dellal A., De l'entraînement à la performance en football, (2008); Baumhauer J.F., Alosa D.M., Renstrom A.F., Trevino S., Beynnon B., A prospective study of ankle injury risk factors, Am J Sports Med, 23, pp. 564-570, (1995); Theoharopoulos A., Tsitskaris G., Nikopoulou M., Tsaklis P., Knee strength of professional basketball players, J Strength Cond Res, 14, pp. 457-463, (2000); Siqueira C.M., Pelegrini F.R., Fontana M.F., Greve J.M., Isokinetic dynamometry of knee flexors and extensors: comparative study among non-athletes, jumper athletes and runner athletes, Rev Hosp Clin Fac Med Sao Paulo, 57, pp. 19-24, (2002); Brockett C.L., Morgan D.L., Proske U., Predicting hamstring strain injury in elite athletes, Med Sci Sports Exerc, 36, pp. 379-387, (2004); Hewett T.E., Myer G.D., Ford K.R., Prevention of anterior cruciate ligament injuries, Curr Womens Health Rep, 1, pp. 218-224, (2001); Orchard J., Marsden J., Lord S., Garlick D., Preseason hamstring muscle weakness associated with hamstring muscle injury in Australian footballers, Am J Sports Med, 25, pp. 81-85, (1997); Croisier J.L., Forthomme B., Namurois M.H., Vanderthommen M., Crielaard J.M., Et al., Hamstring muscle strain recurrence, Sports Med, 30, pp. 199-203, (2002); Askling C., Karlsson J., Thorstensson A., Hamstring injury occurrence in elite soccer players after preseason strength training with eccentric overload, Scand J Med Sci Sports, 13, pp. 244-250, (2003); Bennell K., Et al., Isokinetic strength testing does not predict hamstring injury in Australian Rules footballers, Br J Sports Med, 32, pp. 309-314, (1998); Reilly T., Fitness assessment, Science and soccer, pp. 87-97, (1996); Brady M.F., O'Regan M., McCormack B., Isokinetic assessment of uninjured soccer players, Science and football II, pp. 351-354, (1993); Gur H., Akova B., Punduk Z., Kucukoglu S., Effects of age on the reciprocal peak torque ratios during knee muscle contractions in elite soccer players, Scand J Med Sci Sports, 9, pp. 81-87, (1999); Wyatt M.P., Edwards A.M., Comparison of quadriceps and hamstring torque values during isokinetic exercise, J Orthop Sports Phys Ther, 3, pp. 48-56, (1981); Rahnama N., Lees A., Bambaecichi E., Comparison of muscle strength and flexibility between the preferred and non-preferred leg in English soccer players, Ergonomics, 48, pp. 1568-1575, (2005); Croisier J.L., Ganteaume S., Binet J., Genty M., Ferret J.M., Strength imbalances and prevention of hamstring injury in professional soccer players: a prospective study, Am J Sports Med, 36, pp. 1469-1475, (2008); Lehance C., Binet J., Bury T., Croisier J.L., Muscular strength, functional performances and injury risk in professional and junior elite soccer players, Scand J Med Sci Sports, 19, pp. 243-251, (2009); Winter D.A., Biomechanics and motor control of human movement, (1990); Kues J.M., Rothstein J.M., Lamb R.L., Obtaining reliable measurements of knee extensor torque produced during maximal voluntary contractions: an experimental investigation, Phys Ther, 72, pp. 492-501, (1992); Gross M.T., Huffman G.M., Phillips C.N., Wray J.A., Intramachine and intermachine reliability of the Biodex and Cybex II for knee flexion and extension peak torque and angular work, J Orthop Sports Phys Ther, 13, pp. 329-335, (1991); Harding B., Black T., Bruulsema A., Maxwell B., Stratford P.W., Reliability of a reciprocal test protocol performed on the kinetic communicator: an isokinetic test of knee extensor and flexor strength, J Orthop Sports Phys Ther, 10, pp. 218-223, (1988); Kannus P., Isokinetic evaluation of muscular performance: implications for muscle testing and rehabilitation, Int J Sports Med, 15, (1994); Sangnier S., Tourny-Chollet C., Comparison of the decrease in strength between hamstrings and quadriceps during isokinetic fatigue testing in semiprofessional soccer players, Int J Sports Med, 28, pp. 952-957, (2007); Van Ingen Schenau G.J., From rotation to translation: constraints on multi-joint movements and the unique action of bi-articular muscles, Hum Mov Sci, 8, pp. 301-337, (1989); Goubel F., Biomécanique : éléments de la mécanique musculaire, (2003); Croisier J.L., Ganteaume S., Ferret J.M., Pre-season isokinetic intervention as a preventive strategy for hamstring injury in professional soccer players [abstract], Br J Sports Med, 39, (2005); Tourny-Chollet C., Biette N., Leroy D., Sangnier S., Hamel M., Bleuret Blanquart F., Analysis of the functional isokinetic ratios according to the position of the soccer player in the horizontal and the vertical plane, Hum Mov Sci, 43, pp. 387-402, (2002); Wiemann K., Tidow G., Relative activity of hip and knee extensors in sprinting, USA by IAAF, 10, pp. 29-49, (1995); Bobbert M.F., van Ingen Schenau G.J., Coordination in vertical jumping, J Biomech, 21, pp. 249-262, (1988)","Y. Blache; Centre de recherche et d'innovation sur le sport (CRIS), Université Claude-Bernard, Lyon-1, 69622 Villeurbanne cedex, 27-29, boulevard du 11-Novembre-1918, France; email: yoann.blache@hotmail.fr","","Elsevier Masson SAS","07651597","","SCSPE","","English","Sci. Sports","Article","Final","","Scopus","2-s2.0-84862331733" "Hasan H.; Davids K.; Chow J.Y.; Kerr G.","Hasan, Hosni (42861506900); Davids, Keith (7003449117); Chow, Jia Yi (12776077700); Kerr, Graham (7102158133)","42861506900; 7003449117; 12776077700; 7102158133","Compression and texture in socks enhance football kicking performance","2016","Human Movement Science","48","","","102","111","9","13","10.1016/j.humov.2016.04.008","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84964800392&doi=10.1016%2fj.humov.2016.04.008&partnerID=40&md5=dbe4d8ecc77b26c03c2736a7bc7ed252","School of Exercise and Nutrition Science, Queensland University of Technology, Brisbane, Australia; FiDiPro Programme, Faculty of Sport and Health Sciences, University of Jyväskylä, Finland; Centre for Sports Engineering Research, Sheffield Hallam University, Sheffield, United Kingdom; Physical Education and Sports Science, Nanyang Technological University, Singapore, Singapore; Movement Neuroscience, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia; Faculty of Sports Science and Recreation, Universiti Teknologi MARA, Shah Alam, Malaysia","Hasan H., School of Exercise and Nutrition Science, Queensland University of Technology, Brisbane, Australia, Movement Neuroscience, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia, Faculty of Sports Science and Recreation, Universiti Teknologi MARA, Shah Alam, Malaysia; Davids K., FiDiPro Programme, Faculty of Sport and Health Sciences, University of Jyväskylä, Finland, Centre for Sports Engineering Research, Sheffield Hallam University, Sheffield, United Kingdom; Chow J.Y., Physical Education and Sports Science, Nanyang Technological University, Singapore, Singapore; Kerr G., School of Exercise and Nutrition Science, Queensland University of Technology, Brisbane, Australia, Movement Neuroscience, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia","The purpose of this study was to observe effects of wearing textured insoles and clinical compression socks on organisation of lower limb interceptive actions in developing athletes of different skill levels in association football. Six advanced learners and six completely novice football players (15.4 ± 0.9 years) performed 20 instep kicks with maximum velocity, in four randomly organised insoles and socks conditions, (a) Smooth Socks with Smooth Insoles (SSSI); (b) Smooth Socks with Textured Insoles (SSTI); (c) Compression Socks with Smooth Insoles (CSSI) and (d), Compression Socks with Textured Insoles (CSTI). Reflective markers were placed on key anatomical locations and the ball to facilitate three-dimensional (3D) movement recording and analysis. Data on 3D kinematic variables and initial ball velocity were analysed using one-way mixed model ANOVAs. Results revealed that wearing textured and compression materials enhanced performance in key variables, such as the maximum velocity of the instep kick and increased initial ball velocity, among advanced learners compared to the use of non-textured and compression materials. Adding texture to football boot insoles appeared to interact with compression materials to improve kicking performance, captured by these important measures. This improvement in kicking performance is likely to have occurred through enhanced somatosensory system feedback utilised for foot placement and movement organisation of the lower limbs. Data suggested that advanced learners were better at harnessing the augmented feedback information from compression and texture to regulate emerging movement patterns compared to novices. © 2016 Published by Elsevier B.V.","Attunement; Clinical compression socks; Instep kick; Skill level; Somatosensory information; Textured insoles","Adolescent; Athletic Performance; Biomechanical Phenomena; Feedback, Physiological; Foot; Football; Humans; Lower Extremity; Male; Movement; Orthotic Devices; Psychomotor Performance; Stockings, Compression; athlete; compression; controlled study; foot; football; human; human experiment; model; skill; somatosensory system; velocity; adolescent; anatomy and histology; athletic performance; biomechanics; compression stocking; football; lower limb; male; movement (physiology); orthosis; physiological feedback; physiology; psychomotor performance; randomized controlled trial","Ali A., Creasy R.H., Edge J.A., Physiological effects of wearing graduated compression stockings during running, European Journal of Applied Physiology, 109, 6, pp. 1017-1025, (2010); 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Chow J.Y., Davids K., Button C., Koh M., Coordination changes in a discrete multi-articular action as a function of practice, Acta Psychologica, 127, 1, pp. 163-176, (2008); Cohen J., Cohen P., West S., Aiken L., Applied multiple regression/correlation analysis for the behavioral sciences, (2013); Corbin D., Hart J.M., Palmieri-Smith R., Ingersoll C.D., Hertel J., The effect of textured insoles on postural control in double and single limb stance, Journal of Sport Rehabilitation, 16, 4, pp. 363-372, (2007); Davids K., Shuttleworth R., Button C., Renshaw I., Glazier P., Essential noise"" - enhancing variability of informational constraints benefits movement control: A comment on Waddington and Adams (2003), British Journal of Sports Medicine, 38, 5, pp. 601-605, (2004); Dixon J., Gamesby H., Robinson J., Hodgson D., Hatton A.L., Warnett R., Et al., The effect of textured insoles on gait in people with multiple sclerosis: An exploratory study, Physiotherapy Research International, 17, 2, pp. 121-122, (2012); Fajen B., Riley M., Turvey M., Information, affordances, and the control of action in sport, International Journal of Sport Psychology, 40, 1, (2008); Finnoff J., Newcomer K., Laskowski E., A valid and reliable method for measuring the kicking accuracy of soccer players, Journal of Science and Medicine in Sport, 5, 4, pp. 348-353, (2002); Gori M., Del Viva M., Sandini G., Burr D.C., Young children do not integrate visual and haptic form information, Current Biology, 18, 9, pp. 694-698, (2008); Han J., Anson J., Waddington G., Adams R., Sport attainment and proprioception, International Journal of Sports Science and Coaching, 9, 1, pp. 159-170, (2014); Han J., Waddington G., Anson J., Adams R., Level of competitive success achieved by elite athletes and multi-joint proprioceptive ability, Journal of Science and Medicine in Sport, 18, pp. 77-81, (2013); Hartmann A., Murer K., de Bie R.A., de Bruin E.D., The effect of a training program combined with augmented afferent feedback from the feet using shoe insoles on gait performance and muscle power in older adults: A randomised controlled trial, Disability & Rehabilitation, 32, 9, pp. 755-764, (2010); Hatton A., Dixon J., Martin D., Rome K., The effect of textured surfaces on postural stability and lower limb muscle activity, Journal of Electromyography and Kinesiology, 19, 5, pp. 957-964, (2009); Hatton A., Dixon J., Rome K., Newton J., Martin D., Altering gait by way of stimulation of the plantar surface of the foot: The immediate effect of wearing textured insoles in older fallers, Journal of Foot and Ankle Research, 5, 1, (2012); Hooper D.R., Dulkis L.L., Secola P.J., Holtzum G., Harper S.P., Kalkowski R.J., Et al., The roles of an upper body compression garment on athletic performances, Journal of Strength and Conditioning Research, 29, 9, pp. 2655-2660, (2015); Inoue K., Nunome H., Sterzing T., Shinkai H., Ikegami Y., Dynamics of the support leg in soccer instep kicking, Journal of Sports Sciences, 32, 11, pp. 1023-1032, (2014); Isokawa M., Lees A., A biomechanical analysis of the instep kick motion in soccer, Science and Football, 1, pp. 449-455, (1988); Katis A., Kellis E., Three-dimensional kinematics and ground reaction forces during the instep and outstep soccer kicks in pubertal players, Journal of Sports Sciences, 28, 11, pp. 1233-1241, (2010); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Science and Medicine, 6, 2, pp. 154-165, (2007); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Medicine and Science in Sports and Exercise, 36, 6, pp. 1017-1028, (2004); Kemmler W., von Stengel S., Kockritz C., Mayhew J., Wassermann A., Zapf J., Effect of compression stockings on running performance in men runners, The Journal of Strength & Conditioning Research, 23, 1, pp. 101-105, (2009); Knudson D., Bahamonde R., Effect of endpoint conditions on position and velocity near impact in tennis, Journal of Sports Sciences, 19, 11, pp. 839-844, (2001); Lee M.C., Chow J.Y., Komar J., Tan C.W., Button C., Nonlinear pedagogy: An effective approach to cater for individual differences in learning a sports skill, PLoS ONE, 9, 8, (2014); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, 8, pp. 805-817, (2010); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, 3, pp. 211-234, (1998); Lees A., Rahnama N., Variability and typical error in the kinematics and kinetics of the maximal instep kick in soccer, Sports Biomechanics, 12, 2, pp. 283-292, (2013); McLean B., Tumilty D., Left-right asymmetry in two types of soccer kick, British Journal of Sports Medicine, 27, 4, pp. 260-262, (1993); Miranda D.L., Hsu W.-H., Gravelle D., Petersen K., Ryzman R., Niemi J., Et al., Sensory enhancing insoles improve athletic performance during a hexagonal agility task, Journal of Biomechanics, 49, 7, pp. 1058-1063, (2016); Nurse M.A., Hulliger M., Wakeling J.M., Nigg B.M., Stefanyshyn D.J., Changing the texture of footwear can alter gait patterns, Journal of Electromyography and Kinesiology, 15, 5, pp. 496-506, (2005); Orth D., Davids K., Wheat J., Seifert L., Liukkonen J., Jaakkola T., Et al., The role of textured material in supporting perceptual-motor functions, PLoS ONE, 8, 4, pp. 1-14, (2013); Qiu F., Cole M., Davids K., Hennig E., Silburn P., Netscher H., Et al., Enhanced somatosensory information decreases postural sway in older people, Gait & Posture, 35, pp. 630-635, (2012); Qiu F., Cole M.H., Davids K.W., Hennig E.M., Silburn P.A., Netscher H., Et al., Effects of textured insoles on balance in people with Parkinson's disease, PLoS ONE, 8, 12, (2013); Richardson J., Eta squared and partial eta squared as measures of effect size in educational research, Educational Research Review, 6, 2, pp. 135-147, (2011); Shan G., Westerhoff P., Soccer: Full-body kinematic characteristics of the maximal instep Soccer kick by male soccer players and parameters related to kick quality, Sports Biomechanics, 4, 1, pp. 59-72, (2005); Shinkai H., Nunome H., Ikegami Y., Isokawa M., Ball-foot interaction in impact phase of instep soccer kicking, Science and Football VI, 6, (2008); Shinkai H., Nunome H., Isokawa M., Ikegami Y., Ball impact dynamics of instep soccer kicking, Medicine and Science in Sports and Exercise, 41, 4, pp. 889-897, (2009); Waddington G., Adams R., Textured insole effects on ankle movement discrimination while wearing athletic shoes, Physical Therapy in Sport, 1, 4, pp. 119-128, (2000); Waddington G., Adams R., Football boot insoles and sensitivity to extent of ankle inversion movement, British Journal of Sports Medicine, 37, 2, pp. 170-175, (2003); Wheat J.S., Haddad J.M., Fedirchuk K., Davids K., Effects of textured socks on balance control during single-leg standing in healthy adults, Procedia Engineering, 72, pp. 120-125, (2014); Woo M.T., Davids K., Liukkonen J., Jaakkola T., Chow J.Y., Effects of textured compression socks on postural control in physically active elderly individuals, Procedia Engineering, 72, pp. 162-167, (2014)","H. Hasan; School of Exercise and Nutrition Sciences, O Block, Kelvin Grove, Victoria Park Road, Kelvin Grove, 4059, Australia; email: hosni.hasan@hdr.qut.edu.au","","Elsevier B.V.","01679457","","HMSCD","27155962","English","Hum. Mov. Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84964800392" "Mendez-Rebolledo G.; Ramirez-Campillo R.; Guzman-Muñoz E.; Gatica-Rojas V.; Dabanch-Santis A.; Diaz-Valenzuela F.","Mendez-Rebolledo, Guillermo (55891096400); Ramirez-Campillo, Rodrigo (55675682700); Guzman-Muñoz, Eduardo (56520381200); Gatica-Rojas, Valeska (55891168600); Dabanch-Santis, Alexis (57203116204); Diaz-Valenzuela, Francisco (57203111287)","55891096400; 55675682700; 56520381200; 55891168600; 57203116204; 57203111287","Short-term effects of Kinesio taping on muscle recruitment order during a vertical jump: A pilot study","2018","Journal of Sport Rehabilitation","27","4","","319","326","7","16","10.1123/jsr.2017-0046","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85050513140&doi=10.1123%2fjsr.2017-0046&partnerID=40&md5=d0e2e9f07683a426ef6118623226313d","Human Motor Control Laboratory, Department of Human Movement Sciences, Universidad de Talca, Talca, Chile; Escuela de Kinesiología, Facultad de Salud, Universidad Santo Tomás, Chile; Department of Physical Activity Sciences, Universidad de Los Lagos, Osorno, Chile; Escuela de Kinesiología, Facultad de Ciencias de la Salud, Universidad de Talca, Talca, Chile","Mendez-Rebolledo G., Human Motor Control Laboratory, Department of Human Movement Sciences, Universidad de Talca, Talca, Chile, Escuela de Kinesiología, Facultad de Salud, Universidad Santo Tomás, Chile; Ramirez-Campillo R., Department of Physical Activity Sciences, Universidad de Los Lagos, Osorno, Chile; Guzman-Muñoz E., Escuela de Kinesiología, Facultad de Salud, Universidad Santo Tomás, Chile; Gatica-Rojas V., Human Motor Control Laboratory, Department of Human Movement Sciences, Universidad de Talca, Talca, Chile; Dabanch-Santis A., Escuela de Kinesiología, Facultad de Ciencias de la Salud, Universidad de Talca, Talca, Chile; Diaz-Valenzuela F., Escuela de Kinesiología, Facultad de Ciencias de la Salud, Universidad de Talca, Talca, Chile","Context: Kinesio taping is commonly used in sports and rehabilitation settings with the aim of prevention and treatment of musculoskeletal injuries. However, limited evidence exists regarding the effects of 24 and 72 hours of kinesio taping on trunk and lower limb neuromuscular and kinetic performance during a vertical jump. Objective: The purpose of this study was to analyze the short-term effects of kinesio taping on height and ground reaction force during a vertical jump, in addition to trunk and lower limb muscle latency and recruitment order. Design: Single-group pretest-posttest. Setting: University laboratory. Participants: Twelve male athletes from different sports (track and field, basketball, and soccer). Interventions: They completed a single squat and countermovement jump at basal time (no kinesio taping), 24, and 72 hours of kinesio taping application on the gluteus maximus, biceps femoris, rectus femoris, gastrocnemius medialis, and longissimus. Main Outcome Measures: Muscle onset latencies were assessed by electromyography during a squat and countermovement jump, in addition to measurements of the jump height and normalized ground reaction force. Results: The kinesio taping had no effect after 24 hours on either the countermovement or squat jump. However, at 72 hours, the kinesio taping increased the jump height (P = .02; d = 0.36) and normalized ground reaction force (P = .001; d = 0.45) during the countermovement jump. In addition, 72-hour kinesio taping reduced longissimus onset latency (P = .03; d = 1.34) and improved muscle recruitment order during a countermovement jump. Conclusions: These findings suggest that kinesio taping may improve neuromuscular and kinetic performance during a countermovement jump only after 72 hours of application on healthy and uninjured male athletes. However, no changes were observed on a squat jump. Future studies should incorporate a control group to verify kinesio taping's effects and its influence on injured athletes. © 2018 Human Kinetics, Inc.","Electromyography; Neuromuscular control; Sport performance; Tape; Timing","Adult; Athletes; Athletic Performance; Athletic Tape; Basketball; Biomechanical Phenomena; Electromyography; Humans; Male; Muscle, Skeletal; Pilot Projects; Soccer; Track and Field; Young Adult; adult; article; athlete; athletic performance; basketball; biceps femoris muscle; clinical article; controlled study; electromyography; gastrocnemius muscle; gluteus maximus muscle; ground reaction force; height; human; longissimus muscle; male; neuromuscular function; neurophysiological recruitment; outcome assessment; pilot study; pretest posttest design; rectus femoris muscle; soccer; track and field; trunk; athletic performance; athletic tape; biomechanics; electromyography; physiology; pilot study; skeletal muscle; young adult","Quagliarella L., Sasanelli N., Belgiovine G., Moretti L., Moretti B., Power output estimation in vertical jump performed by young male soccer players, J Strength Cond Res, 25, 6, pp. 1638-1646, (2011); Shalfawi S.A., Sabbah A., Kailani G., Tonnessen E., Enoksen E., The relationship between running speed and measures of vertical jump in professional basketball players: a field-test approach, J Strength Cond Res, 25, 11, pp. 3088-3092, (2011); Perez-Gomez J., Calbet J.A., Training methods to improve vertical jump performance, J Sports Med Phys Fitness, 53, 4, pp. 339-357, (2013); Bobbert M.F., van Ingen Schenau G.J., Coordination in vertical jumping, J Biomech, 21, 3, pp. 249-262, (1988); Pandy M.G., Zajac F.E., Sim E., Levine W.S., An optimal control model for maximum-height human jumping, J Biomech, 23, 12, pp. 1185-1198, (1990); Struyf F., Cagnie B., Cools A., Et al., Scapulothoracic muscle activity and recruitment timing in patients with shoulder impingement symptoms and glenohumeral instability, J Electromyogr Kinesiol, 24, 2, pp. 277-284, (2014); Santos M.J., Kanekar N., Aruin A.S., The role of anticipatory postural adjustments in compensatory control of posture: 1 Electromyographic analysis, J Electromyogr Kinesiol, 20, 3, pp. 388-397, (2010); Hudson J., Coordination of segments in the vertical jump, Med Sci Sports Exerc, 18, 2, pp. 242-251, (1986); Kopper B., Ureczky D., Tihanyi J., Trunk position influences joint activation pattern and physical performance during vertical jumping, Acta Physiol Hung, 99, 2, pp. 194-205, (2012); Markovic G., Does plyometric training improve vertical jump height? A meta-analytical review, Br J Sports Med, 41, 6, pp. 349-355, (2007); Sotiropoulos K., Smilios I., Christou M., Et al., Effects of warm-up on vertical jump performance and muscle electrical activity using halfsquats at low and moderate intensity, J Sports Sci Med, 9, 2, pp. 326-331, (2010); Chtourou H., Aloui A., Hammouda O., Chaouachi A., Chamari K., Souissi N., Effect of static and dynamic stretching on the diurnal variations of jump performance in soccer players, PLoS ONE, 8, 8, (2013); Bobbert M.F., Van Soest A.J., Effects of muscle strengthening on vertical jump height: a simulation study, Med Sci Sports Exerc, 26, 8, pp. 1012-1020, (1994); Prokopow P., Szyniszewski S., Pomorski K., The effects of changes in the timing of muscle activation on jump height: a simulation study, Hum Mov, 2, 12, pp. 116-123, (2005); Kase K., Wallis J., Kase T., Clinical Therapeutic Applications of the Kinesio Taping Method, (2003); Shakeri H., Keshavarz R., Arab A.M., Ebrahimi I., Clinical effectiveness of kinesiological taping on pain and pain-free shoulder range of motion in patients with shoulder impingement syndrome: a randomized, double blinded, placebo-controlled trial, Int J Sports Phys Ther, 8, 6, pp. 800-810, (2013); Williams S., Whatman C., Hume P.A., Sheerin K., Kinesio taping in treatment and prevention of sports injuries: a meta-analysis of the evidence for its effectiveness, Sports Med, 42, 2, pp. 153-164, (2012); Hsu Y.H., Chen W.Y., Lin H.C., Wang W.T., Shih Y.F., The effects of taping on scapular kinematics and muscle performance in baseball players with shoulder impingement syndrome, J Electromyogr Kinesiol, 19, 6, pp. 1092-1099, (2009); Huang C.Y., Hsieh T.H., Lu S.C., Su F.C., Effect of the kinesio tape to muscle activity and vertical jump performance in healthy inactive people, Biomed Eng Online, 10, (2011); MacDowall I., Sanzo P., Zerpa C., The effect of kinesio taping on vertical jump height and muscle electromyographic activity of the gastrocnemius and soleus in varsity athletes, Int J Sports Sci, 5, 4, pp. 162-170, (2015); Nunes G.S., de Noronha M., Cunha H.S., Ruschel C., Borges N.G., Effect of kinesio taping on jumping and balance in athletes: a crossover randomized controlled trial, J Strength Cond Res, 27, 11, pp. 3183-3189, (2013); Schiffer T., Mollinger A., Sperlich B., Memmert D., Kinesio taping and jump performance in elite female track and field athletes and jump performance in elite female track and field athletes, J Sport Rehabil, 24, 1, pp. 47-50, (2015); Bosco C., Luhtanen P., Komi P.V., A simple method for measurement of mechanical power in jumping, Eur J Appl Physiol Occup Physiol, 50, 2, pp. 273-282, (1983); Edwards S., Steele J.R., Cook J.L., Purdam C.R., McGhee D.E., Lower limb movement symmetry cannot be assumed when investigating the stop-jump landing, Med Sci Sports Exerc, 44, 6, pp. 1123-1130, (2012); Cavanaugh M.T., Aboodarda S.J., Behm D.G., Intra-and inter-session reliability of quadriceps' and hamstrings' electromyography during a standardized hurdle jump test with single-leg landing, J Strength Cond Res, 31, pp. 1601-1609, (2017); Hermens H.J., Freriks B., Disselhorst-Klug C., Rau G., Development of recommendations for SEMG sensors and sensor placement procedures, J Electromyogr Kinesiol, 10, 5, pp. 361-374, (2000); Bolgla L.A., Malone T.R., Umberger B.R., Uhl T.L., Reliability of electromyographic methods used for assessing hip and knee neuromuscular activity in females diagnosed with patellofemoral pain syndrome, J Electromyogr Kinesiol, 20, 1, pp. 142-147, (2010); Mizuguchi S., Sands W.A., Wassinger C.A., Lamont H.S., Stone M.H., A new approach to determining net impulse and identification of its characteristics in countermovement jumping: reliability and validity, Sports Biomech, 14, 2, pp. 258-272, (2015); Christou E.A., Patellar taping increases vastus medialis oblique activity in the presence of patellofemoral pain, J Electromyogr Kinesiol, 14, 4, pp. 495-504, (2004); Macgregor K., Gerlach S., Mellor R., Hodges P.W., Cutaneous stimulation from patella tape causes a differential increase in vasti muscle activity in people with patellofemoral pain, J Orthop Res, 23, 2, pp. 351-358, (2005); Akbas E., Atay A.O., Yuksel I., The effects of additional kinesio taping over exercise in the treatment of patellofemoral pain syndrome, Acta Orthop Traumatol Turc, 45, 5, pp. 335-341, (2011); Aguilar-Ferrandiz M.E., Castro-Sanchez A.M., Mataran-Penarrocha G.A., Garcia-Muro F., Serge T., Moreno-Lorenzo C., Effects of kinesio taping on venous symptoms, bioelectrical activity of the gastrocnemius muscle, range of ankle motion, and quality of life in postmenopausal women with chronic venous insufficiency: a randomized controlled trial, Arch Phys Med Rehabil, 94, 12, pp. 2315-2328, (2013); Bobbert M.F., van Zandwijk J.P., Sensitivity of vertical jumping performance to changes in muscle stimulation onset times: a simulation study, Biol Cybern, 81, 2, pp. 101-108, (1999); Slupik A., Dwornik M., Bialoszewski D., Zych E., Effect of Kinesio Taping on bioelectrical activity of vastus medialis muscle Preliminary report, Ortop Traumatol Rehabil, 9, 6, pp. 644-651, (2007); Proske U., Gandevia S.C., The proprioceptive senses: their roles in signaling body shape, body position and movement, and muscle force, Physiol Rev, 92, pp. 1651-1697, (2012); Slijper H., Latash M.L., The effects of muscle vibration on anticipatory postural adjustments, Brain Res, 1015, 1-2, pp. 57-72, (2004); Krishnan V., Aruin A.S., Postural control in response to a perturbation: role of vision and additional support, Exp Brain Res, 212, 3, pp. 385-397, (2011); Bae S.H., Lee J.H., Oh K.A., Kim K.Y., The effects of kinesio taping on potential in chronic low back pain patients anticipatory postural control and cerebral cortex, J Phys Ther Sci, 25, 11, pp. 1367-1371, (2013); Aguilar-Ferrandiz M.E., Castro-Sanchez A.M., Mataran-Penarrocha G.A., Guisado-Barrilao R., Garcia-Rios M.C., Moreno-Lorenzo C., A randomized controlled trial of a mixed Kinesio taping-compression technique on venous symptoms, pain, peripheral venous flow, clinical severity and overall health status in postmenopausal women with chronic venous insufficiency, Clin Rehabil, 28, 1, pp. 69-81, (2014); Csapo R., Alegre L.M., Effects of kinesio® taping on skeletal muscle strength-a meta-analysis of current evidence, J Sci Med Sport, 18, 4, pp. 450-456, (2015); Teepker M., Peters M., Vedder H., Schepelmann K., Lautenbacher S., Menstrual variation in experimental pain: correlation with gonadal hormones, Neuropsychobiology, 61, 3, pp. 131-140, (2010); Pereira H.M., Spears V.C., Schlinder-Delap B., Et al., Sex differences in arm muscle fatigability with cognitive demand in older adults, Clin Orthop Relat Res, 473, 8, pp. 2568-2577, (2015)","G. Mendez-Rebolledo; Human Motor Control Laboratory, Department of Human Movement Sciences, Universidad de Talca, Talca, Chile; email: guillermomendezre@santotomas.cl","","Human Kinetics Publishers Inc.","10566716","","JSRHE","28513281","English","J. Sport Rehabil.","Article","Final","","Scopus","2-s2.0-85050513140" "Krauss M.D.","Krauss, Michael D (7102444410)","7102444410","Equipment innovations and rules changes in sports.","2004","Current sports medicine reports","3","5","","272","276","4","15","10.1249/00149619-200410000-00007","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33645750164&doi=10.1249%2f00149619-200410000-00007&partnerID=40&md5=c4f8724be5422544c64c9b128c1ea63a","Purdue University Sports Medicine, West Lafayette, 47907-2070, IN, United States","Krauss M.D., Purdue University Sports Medicine, West Lafayette, 47907-2070, IN, United States","Participation in competitive athletics carries an inherent risk for injury. The acceptable level of risk in certain sports is often a topic of considerable debate. The National Collegiate Athletic Association, and other sports governing bodies, use injury surveillance and input from coaches, administrators, officials, athletes, and sports medicine experts in considering rules and equipment changes. Equipment innovations and/or equipment rules changes may decrease the risk of injury. However, equipment and rules changes can alter the essence or style of play of a particular sport, thus possibly increasing the risk of injury. This article discusses recent changes in equipment in various sports. The reasons for change, controversy, and relevant research related to those changes are also reviewed.","","Athletic Injuries; Baseball; Biomechanics; Brain Concussion; Equipment Design; Football; Gymnastics; Head Protective Devices; Humans; Protective Clothing; Racquet Sports; Soccer; Track and Field; article; baseball; biomechanics; brain concussion; equipment design; football; helmet; human; injury; pathophysiology; physical education; protective clothing; sport; sport injury","","","","","15378918","","","15324595","English","Curr Sports Med Rep","Article","Final","","Scopus","2-s2.0-33645750164" "Bortone I.; Moretti L.; Bizzoca D.; Caringella N.; Delmedico M.; Piazzolla A.; Moretti B.","Bortone, Ilaria (56347065600); Moretti, Lorenzo (8302956300); Bizzoca, Davide (56743348700); Caringella, Nuccio (57220152089); Delmedico, Michelangelo (57214991072); Piazzolla, Andrea (8720318900); Moretti, Biagio (7003833156)","56347065600; 8302956300; 56743348700; 57220152089; 57214991072; 8720318900; 7003833156","The importance of biomechanical assessment after Return to Play in athletes with ACL-Reconstruction","2021","Gait and Posture","88","","","240","246","6","11","10.1016/j.gaitpost.2021.06.005","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107677394&doi=10.1016%2fj.gaitpost.2021.06.005&partnerID=40&md5=c496b247266916508876bf64d7312825","Department of Basic Medical Sciences, Neuroscience and Sense Organs, School of Medicine, University of Bari “Aldo Moro”, AOU Consorziale Policlinico, Piazza Giulio Cesare 11, Bari, 70124, Italy; Orthopaedic & Trauma Unit, AOU Consorziale Policlinico, Piazza Giulio Cesare 11, Bari, 70124, Italy","Bortone I., Department of Basic Medical Sciences, Neuroscience and Sense Organs, School of Medicine, University of Bari “Aldo Moro”, AOU Consorziale Policlinico, Piazza Giulio Cesare 11, Bari, 70124, Italy; Moretti L., Orthopaedic & Trauma Unit, AOU Consorziale Policlinico, Piazza Giulio Cesare 11, Bari, 70124, Italy; Bizzoca D., Department of Basic Medical Sciences, Neuroscience and Sense Organs, School of Medicine, University of Bari “Aldo Moro”, AOU Consorziale Policlinico, Piazza Giulio Cesare 11, Bari, 70124, Italy; Caringella N., Department of Basic Medical Sciences, Neuroscience and Sense Organs, School of Medicine, University of Bari “Aldo Moro”, AOU Consorziale Policlinico, Piazza Giulio Cesare 11, Bari, 70124, Italy; Delmedico M., Department of Basic Medical Sciences, Neuroscience and Sense Organs, School of Medicine, University of Bari “Aldo Moro”, AOU Consorziale Policlinico, Piazza Giulio Cesare 11, Bari, 70124, Italy; Piazzolla A., Orthopaedic & Trauma Unit, AOU Consorziale Policlinico, Piazza Giulio Cesare 11, Bari, 70124, Italy; Moretti B., Department of Basic Medical Sciences, Neuroscience and Sense Organs, School of Medicine, University of Bari “Aldo Moro”, AOU Consorziale Policlinico, Piazza Giulio Cesare 11, Bari, 70124, Italy, Orthopaedic & Trauma Unit, AOU Consorziale Policlinico, Piazza Giulio Cesare 11, Bari, 70124, Italy","Background: Barriers to successful return to previous level of activity following Anterior Cruciate Ligament Reconstruction (ACLR) are multifactorial and recent research suggests that athletic performance deficits persist after completion of the rehabilitation course in a large percentage of patients. Research question: Do technology-based biomechanical assessments reveal underneath differences in both recreational and competitive athletes in Return to Play after ACL-Reconstruction? Methods: Thirty soccer athletes (26.9 ± 5.7 years old, male) with ACL injury were surgically treated with all-inside technique and semitendinosus tendon autograft. Before 2 years from surgery, they were called back for clinical examination, self-reported psychological scores, and biomechanical outcomes (balance, strength, agility and velocity, and symmetry). Athletes were classified into recreational (n = 15) and competitive (n = 15) according to the self-reported Return to Play Level based on the TALS post-injury. Nonparametric statistical tests have been adopted for group comparisons in terms of age, concomitant presence of meniscus tear, injury on dominant leg, presence of knee laxity, presence of varus/valgus, body sides, and return to different levels of sports. Results: Competitive athletes showed better in terms of strength (45.3 ± 5.4 W kg−1 vs 39.3 ± 3.4 W kg−1, P ≤ 0.01) associated with good self-reported outcomes (TLKS, CRSQ) and low fear of reinjury (TSK). However, all the athletes had a functional deficit in at least one subtest, and a safe return to sports could not have been recommended. Our findings confirmed that demographics, physical function, and psychological factors were related to playing the preinjury level sport at mean 2 years after surgery, supporting the notion that returning to sport after surgery is multifactorial. Significance: A strict qualitative and quantitative assessment of athletes’ status should be performed at different follow-ups after surgery to guarantee a safe and controlled RTP. © 2021 Elsevier B.V.","ACL injury; Biomechanics; Motion analysis; Return to Play; Sport performance","Adult; Anterior Cruciate Ligament Injuries; Anterior Cruciate Ligament Reconstruction; Athletes; Humans; Knee Joint; Male; Return to Sport; Young Adult; adult; agility; anterior cruciate ligament injury; anterior cruciate ligament reconstruction; Article; athlete; athletic performance; athletic rehabilitation; autograft; biomechanics; body equilibrium; clinical article; clinical assessment; clinical evaluation; clinical examination; comparative study; controlled study; fear; follow up; functional status; human; joint laxity; knee meniscus rupture; leg injury; male; muscle strength; outcome assessment; patient-reported outcome; physical activity; play; psychological aspect; return to sport; self report; semitendinous muscle; soccer; sport; surgical technique; tendon graft; valgus knee; varus knee; velocity; knee; return to sport; young adult","Singh N., International epidemiology of anterior cruciate ligament injuries, Orthop. Res. Online J., 3, (2018); Grassi A., Macchiarola L., Filippini M., Lucidi G.A., Della Villa F., Zaffagnini S., Epidemiology of anterior cruciate ligament injury in italian first division soccer players, Sports Health, 12, pp. 279-288, (2020); Falese L., Della Valle P., Federico B., Epidemiology of football (soccer) injuries in the 2012/2013 and 2013/2014 seasons of the Italian Serie A, Res. Sports Med., 24, pp. 426-432, (2016); Webster K.E., Feller J.A., A research update on the state of play for return to sport after anterior cruciate ligament reconstruction, J. Orthop. Traumatol., 20, (2019); Lai C.C.H., Feller J.A., Webster K.E., Fifteen-year audit of anterior cruciate ligament reconstructions in the australian football league from 1999 to 2013: return to play and subsequent ACL injury, Am. J. Sports Med., 46, pp. 3353-3360, (2018); Burgi C.R., Peters S., Ardern C.L., Magill J.R., Gomez C.D., Sylvain J., Reiman M.P., Which criteria are used to clear patients to return to sport after primary ACL reconstruction? A scoping review, Br. J. Sports Med., 53, pp. 1154-1161, (2019); Davies W.T., Myer G.D., Read P.J., Is it time we better understood the tests we are using for return to sport decision making following ACL reconstruction? A critical review of the hop tests, Sports Med., 50, pp. 485-495, (2020); Ashton M.L., Kraeutler M.J., Brown S.M., Mulcahey M.K., Psychological readiness to return to sport following anterior cruciate ligament reconstruction, JBJS Rev., 8, (2020); Paterno M.V., Rauh M.J., Schmitt L.C., Ford K.R., Hewett T.E., Incidence of second ACL injuries 2 years after primary ACL reconstruction and return to sport, Am. J. Sports Med., 42, pp. 1567-1573, (2014); Nagelli C.V., Hewett T.E., Should return to sport be delayed until 2 years after anterior cruciate ligament reconstruction? Biological and functional considerations, Sports Med., 47, pp. 221-232, (2017); Grindem H., Snyder-Mackler L., Moksnes H., Engebretsen L., Risberg M.A., Simple decision rules can reduce reinjury risk by 84% after ACL reconstruction: the Delaware-Oslo ACL cohort study, Br. J. Sports Med., 50, pp. 804-808, (2016); Sousa P.L., Krych A.J., Cates R.A., Levy B.A., Stuart M.J., Dahm D.L., Return to sport: does excellent 6-month strength and function following ACL reconstruction predict midterm outcomes?, Knee Surg. Sport. Traumatol. Arthrosc., 25, pp. 1356-1363, (2017); DeLuca P., Editorial commentary: put me back into the game coach! it's time, I'm ready: time is of No essence after an anterior cruciate ligament reconstruction, Arthroscopy., 35, pp. 163-165, (2019); Bortone I., Buongiorno D., Lelli G., Di Candia A., Cascarano G.D., Trotta G.F., Fiore P., Bevilacqua V., Gait analysis and Parkinson's disease: recent trends on main applications in healthcare, International Conference on NeuroRehabilitation, pp. 1121-1125, (2018); Bortone I., Leonardis D., Solazzi M., Procopio C., Crecchi A., Briscese L., Andre P., Bonfiglio L., Frisoli A., Serious game and wearable haptic devices for neuro motor rehabilitation of children with cerebral palsy, Converging Clinical and Engineering Research on Neurorehabilitation II, pp. 443-447, (2017); Buongiorno D., Cascarano G.D., De Feudis I., Brunetti A., Carnimeo L., Dimauro G., Bevilacqua V., Deep learning for processing electromyographic signals: a taxonomy-based survey, Neurocomputing, (2020); Bortone I., Quercia M.G., Ieva N., Cascarano G.D., Trotta G.F., Tato S.I., Bevilacqua V., Recognition and severity rating of Parkinson's disease from postural and kinematic features during gait analysis with Microsoft Kinect, Intelligent Computing Theories and Application, pp. 613-618, (2018); Buongiorno D., Bortone I., Cascarano G.D., Trotta G.F., Brunetti A., Bevilacqua V., A low-cost vision system based on the analysis of motor features for recognition and severity rating of Parkinson's Disease, BMC Med. Inform. Decis. Mak., 19, (2019); Adesida Y., Papi E., McGregor A.H., Exploring the role of wearable technology in sport kinematics and kinetics: a systematic review, Sensors, 19, (2019); Lubowitz J.H., Ahmad C.S., Anderson K., All-inside anterior cruciate ligament graft-link technique: second-generation, no-incision anterior cruciate ligament reconstruction, Arthroscopy, 27, pp. 717-727, (2011); Saka T., Principles of postoperative anterior cruciate ligament rehabilitation, World J. Orthop., 5, pp. 450-459, (2014); Shelbourne K.D., Donald Shelbourne K., Barnes A.F., Gray T., Correlation of a Single Assessment Numeric Evaluation (SANE) rating with modified Cincinnati knee rating system and IKDC subjective total scores for patients After ACL reconstruction or knee arthroscopy, Am. J. Sports Med., 40, pp. 2487-2491, (2012); Briggs K.K., Lysholm J., Tegner Y., Rodkey W.G., Kocher M.S., Richard Steadman J., The reliability, validity, and responsiveness of the Lysholm score and Tegner activity scale for anterior cruciate ligament injuries of the knee, Am. J. Sports Med., 37, pp. 890-897, (2009); Huang H., Nagao M., Arita H., Shiozawa J., Nishio H., Kobayashi Y., Kaneko H., Nagayama M., Saita Y., Ishijima M., Takazawa Y., Ikeda H., Kaneko K., Reproducibility, responsiveness and validation of the Tampa Scale for Kinesiophobia in patients with ACL injuries, Health Qual, Life Outcomes., 17, (2019); Sadeqi M., Klouche S., Bohu Y., Herman S., Lefevre N., Gerometta A., Progression of the psychological ACL-RSI score and return to sport after anterior cruciate ligament reconstruction: a prospective 2-year follow-up study from the French Prospective Anterior Cruciate Ligament Reconstruction Cohort Study (FAST), Orthop. J. Sports Med., 6, (2018); Hildebrandt C., Muller L., Zisch B., Huber R., Fink C., Raschner C., Functional assessments for decision-making regarding return to sports following ACL reconstruction. Part I: development of a new test battery, Knee Surg. Sports Traumatol. Arthrosc., 23, pp. 1273-1281, (2015); Herbst E., Hoser C., Hildebrandt C., Raschner C., Hepperger C., Pointner H., Fink C., Functional assessments for decision-making regarding return to sports following ACL reconstruction. Part II: clinical application of a new test battery, Knee Surg. Sports Traumatol. Arthrosc., 23, pp. 1283-1291, (2015); Cohen J., Statistical power analysis, Curr. Dir. Psychol. Sci., 1, pp. 98-101, (1992); Sepulveda F., Sanchez L., Amy E., Micheo W., Anterior cruciate ligament injury: return to play, function and long-term considerations, Curr. Sports Med. Rep., 16, pp. 172-178, (2017); Ardern C.L., Taylor N.F., Feller J.A., Whitehead T.S., Webster K.E., Sports participation 2 years after anterior cruciate ligament reconstruction in athletes who had not returned to sport at 1 year: a prospective follow-up of physical function and psychological factors in 122 athletes, Am. J. Sports Med., 43, pp. 848-856, (2015); Harput G., Ozer H., Baltaci G., Richards J., Self-reported outcomes are associated with knee strength and functional symmetry in individuals who have undergone anterior cruciate ligament reconstruction with hamstring tendon autograft, Knee, 25, pp. 757-764, (2018); Schmitt L.C., Paterno M.V., Ford K.R., Myer G.D., Hewett T.E., Strength asymmetry and landing mechanics at return to sport after anterior cruciate ligament reconstruction, Med. Sci. Sports Exerc., 47, pp. 1426-1434, (2015); Abrams G.D., Harris J.D., Gupta A.K., McCormick F.M., Bush-Joseph C.A., Verma N.N., Cole B.J., Bach B.R., Functional performance testing after anterior cruciate ligament reconstruction: a systematic review, Orthop. J. Sports Med., 2, (2014); Buckthorpe M., Frizziero A., Roi G.S., Update on functional recovery process for the injured athlete: return to sport continuum redefined, Br. J. Sports Med., 53, pp. 265-267, (2019); Notarnicola A., Maccagnano G., Barletta F., Ascatigno L., Astuto L., Panella A., Tafuri S., Moretti B., Returning to sport after anterior cruciate ligament reconstruction in amateur sports men: a retrospective study, Muscles Ligaments Tendons J., 6, pp. 486-491, (2016)","I. Bortone; Department of Basic Medical Sciences, Neuroscience and Sense Organs, School of Medicine, University of Bari “Aldo Moro”, AOU Consorziale Policlinico, Bari, Piazza Giulio Cesare 11, 70124, Italy; email: ilaria.bortone@uniba.it","","Elsevier B.V.","09666362","","GAPOF","34126566","English","Gait Posture","Article","Final","","Scopus","2-s2.0-85107677394" "Tomblin B.T.; Pritchard N.S.; Filben T.M.; Miller L.E.; Miles C.M.; Urban J.E.; Stitzel J.D.","Tomblin, Brian T. (57209822585); Pritchard, N. Stewart (57219384344); Filben, Tanner M. (57209830121); Miller, Logan E. (55955121600); Miles, Christopher M. (56723593400); Urban, Jillian E. (36119491100); Stitzel, Joel D. (7003389866)","57209822585; 57219384344; 57209830121; 55955121600; 56723593400; 36119491100; 7003389866","Characterization of on-field head impact exposure in youth soccer","2021","Journal of Applied Biomechanics","37","1","","36","42","6","15","10.1123/JAB.2020-0071","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100968621&doi=10.1123%2fJAB.2020-0071&partnerID=40&md5=57178fbf3ac6ee31086728fb385c8a71","Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States; School of Biomedical Engineering and Sciences, Virginia-Tech-Wake Forest University, Winston-Salem, NC, United States; Department of Family and Community Medicine, Wake Forest School of Medicine, Winston-Salem, NC, United States","Tomblin B.T., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia-Tech-Wake Forest University, Winston-Salem, NC, United States; Pritchard N.S., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia-Tech-Wake Forest University, Winston-Salem, NC, United States; Filben T.M., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia-Tech-Wake Forest University, Winston-Salem, NC, United States; Miller L.E., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia-Tech-Wake Forest University, Winston-Salem, NC, United States; Miles C.M., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, Department of Family and Community Medicine, Wake Forest School of Medicine, Winston-Salem, NC, United States; Urban J.E., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia-Tech-Wake Forest University, Winston-Salem, NC, United States; Stitzel J.D., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia-Tech-Wake Forest University, Winston-Salem, NC, United States","The objective of this research was to characterize head impacts with a validated mouthpiece sensor in competitive youth female soccer players during a single season with a validated mouthpiece sensor. Participants included 14 youth female soccer athletes across 2 club-level teams at different age levels (team 1, ages 12-13 y; team 2, ages 14-15 y). Head impact and time-synchronized video data were collected for 66 practices and games. Video data were reviewed to characterize the type and frequency of contact experienced by each athlete. A total of 2216 contact scenarios were observed; heading the ball (n = 681, 30.7%) was most common. Other observed contact scenarios included collisions, dives, falls, and unintentional ball contact. Team 1 experienced a higher rate of headers per player per hour of play than team 2, while team 2 experienced a higher rate of collisions and dives. A total of 935 video-verified contact scenarios were concurrent with recorded head kinematics. While headers resulted in a maximum linear acceleration of 56.1g, the less frequent head-to-head collisions (n = 6) resulted in a maximum of 113.5g. The results of this study improve the understanding of head impact exposure in youth female soccer players and inform head impact exposure reduction in youth soccer. © 2021 Human Kinetics, Inc.","Concussion; Head kinematics; Nonconcussive impacts; Pediatric","Acceleration; Adolescent; Athletes; Biomechanical Phenomena; Child; Female; Head; Humans; Soccer; Video Recording; Youth Sports; Video recording; Exposure reduction; Head impact; Linear accelerations; Rate of collision; Soccer player; Video data; acceleration; adolescent; Article; child; clinical article; concussion; female; head injury; human; kinematics; school child; soccer player; velocity; videorecording; athlete; biomechanics; head; soccer; youth sport; Football","Kunz M., FIFA Big Count: 265 million playing football, FIFA Mag, pp. 10-15, (2007); Lincoln AE, Caswell SV, Almquist JL, Dunn RE, Norris JB, Hinton RY., Trends in concussion incidence in high school sports: a prospective 11-year study, Am J Sports Med, 39, 5, pp. 958-963, (2011); Marar M, McIlvain NM, Fields SK, Comstock RD., Epidemiology of concussions among united states high school athletes in 20 sports, Am J Sports Med, 40, 4, pp. 747-755, (2012); Rosenthal JA, Foraker RE, Collins CL, Comstock RD., National high school athlete concussion rates from 2005-2006 to 2011-2012, Am J Sports Med, 42, 7, pp. 1710-1715, (2014); Implementation guidelines for U.S. Soccer's player safety campaign: concussion initiatives & heading for youth players, (2018); O'Kane JW., Is heading in youth soccer dangerous play?, Phys Sportsmed, 44, 2, pp. 190-194, (2016); O'Kane JW, Spieker A, Levy MR, Neradilek M, Polissar NL, Schiff MA., Concussion among female middle-school soccer players, JAMA Pediatr, 168, 3, pp. 258-264, (2014); Boden BP, Kirkendall DT, Garrett WE., Concussion incidence in elite college soccer players, Am J Sports Med, 26, 2, pp. 238-241, (1998); Yang T, Baugh CM., US Youth Soccer concussion policy: heading in the right direction, JAMA Pediatr, 170, 5, pp. 413-414, (2016); Mainwaring L, Ferdinand Pennock KM, Mylabathula S, Alavie BZ., Subconcussive head impacts in sport: a systematic review of the evidence, Int J Psychophysiol, 132, pp. 39-54, (2018); Rice SG., Medical conditions affecting sports participation, Pediatrics, 121, 4, pp. 841-848, (2008); Stewart WF, Bachrach TA, Ifrah CS, Et al., Symptoms from repeated intentional and unintentional head impact in soccer players, Neurology, 88, 9, pp. 901-908, (2017); Moore RD, Lepine J, Ellemberg D., The independent influence of concussive and sub-concussive impacts on soccer players' neurophysiological and neuropsychological function, Int J Psychophysiol, 112, pp. 22-30, (2017); Lipton ML, Kim N, Zimmerman ME, Et al., Soccer heading is associated with white matter microstructural and cognitive abnormalities, Radiology, 268, 3, pp. 850-857, (2013); Lamond LC, Caccese JB, Buckley TA, Glutting J, Kaminski TW., Linear acceleration in direct head contact across impact type, player position, and playing scenario in collegiate women's soccer players, J Athl Train, 53, 2, pp. 115-121, (2018); McCuen E, Svaldi D, Breedlove K, Et al., Collegiate women's soccer players suffer greater cumulative head impacts than their high school counterparts, J Biomech, 48, 13, pp. 3720-3723, (2015); Comstock RD, Currie DW, Pierpoint LA, Grubenhoff JA, Fields SK., An evidence-based discussion of heading the ball and concussions in high school soccer, JAMA Pediatr, 169, 9, (2015); Chrisman SPD, Donald CLM, Friedman S, Et al., Head impact exposure during a weekend youth soccer tournament, J Child Neurol, 31, 8, pp. 971-978, (2016); Chrisman SPD, Ebel BE, Stein E, Lowry SJ, Rivara FP., Head impact exposure in youth soccer and variation by age and sex, Clin J Sport Med, 29, 1, pp. 3-10, (2019); Hanlon EM, Bir CA., Real-time head acceleration measurement in girls' youth soccer, Med Sci Sports Exerc, 44, 6, pp. 1102-1108, (2012); Kirkendall DT, Jordan SE, Garrett WE., Heading and head injuries in soccer, Sport Med, 31, 5, pp. 369-386, (2001); Quintero LM, Moore JW, Yeager MG, Et al., Reducing risk of head injury in youth soccer: an extension of behavioral skills training for heading, J Appl Behav Anal, 53, 1, pp. 237-248, (2020); Reynolds BB, Patrie J, Henry EJ, Et al., Comparative analysis of head impact in contact and collision sports, J Neurotrauma, 34, 1, pp. 38-49, (2017); Bartsch A, Samorezov S, Benzel E, Miele V, Brett D., Validation of an “Intelligent Mouthguard” single event head impact dosimeter, Stapp Car Crash J, 58, pp. 1-27, (2014); Wu LC, Nangia V, Bui K, Et al., In vivo evaluation of wearable head impact sensors, Ann Biomed Eng, 44, 4, pp. 1234-1245, (2016); Miller LE, Wu LC, Stitzel JD, Urban JE, Camarillo DB, Kuo C., Validation of a custom instrumented retainer form factor for measuring linear and angular head impact kinematics, J Biomech Eng, 140, 5, (2018); Rich AM, Filben TM, Miller LE, Et al., Development, validation and pilot field deployment of a custom mouthpiece for head impact measurement, Ann Biomed Eng, 47, 10, pp. 2109-2121, (2019); Miller LE, Pinkerton EK, Fabian KC, Et al., Characterizing head impact exposure in youth female soccer with a custom-instrumented mouthpiece, Res Sport Med, 28, 1, pp. 55-71, (2020); Ambekar D, Al-Deneh Z, Dao T, Dziech AL, Subbian V, Beyette FR., Development of a point-of-care medical device to measure head impact in contact sports, Proc Annu Int Conf IEEE Eng Med Biol Soc EMBS, pp. 4167-4170, (2013); Rowson S, Duma SM., Brain injury prediction: assessing the combined probability of concussion using linear and rotational head acceleration, Ann Biomed Eng, 41, 5, pp. 873-882, (2013); Kelley ME, Kane JM, Espeland MA, Et al., Head impact exposure measured in a single youth football team during practice drills, J Neurosurg Pediatr, 20, 5, pp. 489-497, (2017); Powell JW, Barber-Foss KD., Traumatic brain injury in high school athletes, J Am Med Assoc, 282, 10, pp. 958-963, (1999); Di Salvo V, Benito PJ, Calderon FJ, Di Salvo M, Pigozzi F., Activity profile of elite goalkeepers during football match-play, J Sports Med Phys Fitness, 48, 4, pp. 443-446, (2008); Press JN, Rowson S., Quantifying head impact exposure in collegiate women's soccer, Clin J Sport Med, 27, 2, pp. 104-110, (2017); Lynall RC, Clark MD, Grand EE, Et al., Head impact biomechanics in women's college soccer, Med Sci Sports Exerc, 48, 9, pp. 1772-1778, (2016); Patton DA, Huber CM, McDonald CC, Margulies SS, Master CL, Arbogast KB., Video confirmation of head impact sensor data from high school soccer players, Am J Sports Med, 48, 5, pp. 1246-1253, (2020)","J.E. Urban; Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, United States; email: jurban@wakehealth.edu","","Human Kinetics Publishers Inc.","10658483","","JABOE","33152691","English","J. Appl. Biomech.","Article","Final","","Scopus","2-s2.0-85100968621" "Stacoff A.; Steger J.; Stüssi E.","Stacoff, A. (56617468300); Steger, J. (7005217169); Stüssi, E. (7006606223)","56617468300; 7005217169; 7006606223","Control of the rear foot in lateral movements in sports; [Die Kontrolle des Rückfusses bei Seitwärtsbewegungen im Sport.]","1993","Sportverletzung Sportschaden : Organ der Gesellschaft für Orthopädisch-Traumatologische Sportmedizin","7","1","","22","29","7","16","10.1055/s-2007-993479","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0027562975&doi=10.1055%2fs-2007-993479&partnerID=40&md5=60e268c597e70e853c49cf64da7e5a5c","Labortorium für Biomechanik, ETH Zürich., Switzerland","Stacoff A., Labortorium für Biomechanik, ETH Zürich., Switzerland; Steger J., Labortorium für Biomechanik, ETH Zürich., Switzerland; Stüssi E., Labortorium für Biomechanik, ETH Zürich., Switzerland","The goals of this investigation were to establish the frequency distribution of different movements in various ball sports (1) and to test the influence of altered shoe sole constructions on the stability in lateral breaking movements (2). Firstly, a video analysis was carried out to establish the frequency distribution of different movements in sporting activities such as volleyball, basketball, team handball and football (soccer). It is shown that a selected number of lateral cutting movements can represent more than half of all movements observed in one of the sporting activities. For part 2 an investigation with three systematically varied shoes was undertaken. The results show that with altered shoe sole constructions (torsion and change of shape of the shoe-sole) the supination movement with shoes comes close to the barefoot values. In respect of abduction/adduction of the foot the systematic changes of the shoe soles had no measurable influence.","","Adult; Ankle Injuries; Ankle Joint; Athletic Injuries; Biomechanics; Female; Humans; Male; Shoes; Torsion; MLCS; MLOWN; adult; ankle; ankle injury; article; biomechanics; female; human; male; pathophysiology; shoe; sport injury; torsion","","","","","09320555","","","8484163","German","Sportverletz Sportschaden","Article","Final","","Scopus","2-s2.0-0027562975" "Page R.M.; Marrin K.; Brogden C.M.; Greig M.","Page, Richard Michael (56888317900); Marrin, Kelly (26654971000); Brogden, Chris Michael (56888703200); Greig, Matt (23034263700)","56888317900; 26654971000; 56888703200; 23034263700","The biomechanical and physiological response to repeated soccer-specific simulations interspersed by 48 or 72 hours recovery","2016","Physical Therapy in Sport","22","","","81","87","6","13","10.1016/j.ptsp.2016.06.011","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84989927254&doi=10.1016%2fj.ptsp.2016.06.011&partnerID=40&md5=b42ce422f68cda62ecbc09d5020fc44b","Sports Injuries Research Group, Dept. of Sport & Physical Activity, Edge Hill University, St. Helens Road, Ormskirk, L39 4QP, Lancashire, United Kingdom","Page R.M., Sports Injuries Research Group, Dept. of Sport & Physical Activity, Edge Hill University, St. Helens Road, Ormskirk, L39 4QP, Lancashire, United Kingdom; Marrin K., Sports Injuries Research Group, Dept. of Sport & Physical Activity, Edge Hill University, St. Helens Road, Ormskirk, L39 4QP, Lancashire, United Kingdom; Brogden C.M., Sports Injuries Research Group, Dept. of Sport & Physical Activity, Edge Hill University, St. Helens Road, Ormskirk, L39 4QP, Lancashire, United Kingdom; Greig M., Sports Injuries Research Group, Dept. of Sport & Physical Activity, Edge Hill University, St. Helens Road, Ormskirk, L39 4QP, Lancashire, United Kingdom","Purpose To assess the residual fatigue response associated with the completion of two successive soccer-specific exercise protocols (SSEP). Methods Twenty male soccer players were pair-matched before completing SSEPs, interspersed by either 48 or 72 h. Outcome variables were measured every 15 min, and comprised uni-axial measures of PlayerLoad, mean (HR) and peak heart rate (HRpeak), blood lactate concentration, mean and peak (V˙O2peak) oxygen consumption, and rating of perceived exertion (RPE). Results No significant (P > 0.05) group interactions were identified for any outcome variables. Uni-axial (and total) PlayerLoad exhibited a significant (P < 0.05) main effect for time, with the exception of the relative contribution of medial lateral PlayerLoad™. Total PlayerLoad during the final 15 min (222.23 ± 15.16 a.u) was significantly higher than all other time points. All other outcome variables also exhibited a significant main effect for time, with HR, HRpeak and V˙O2peak also exhibiting significantly higher values in the first trial. There was also a significant (P = 0.003) trial*time interaction for RPE. Conclusions With equivalence at baseline, there was no difference in the fatigue response associated with two SSEPs interspersed by either 48 or 72 h recovery. The current study has implications for the design and micro management of training and competition schedules. © 2016 Elsevier Ltd","Biomechanics; Fixture congestion; Physiology; PlayerLoad™","Biomechanical Phenomena; Exercise Test; Fatigue; Heart Rate; Humans; Lactates; Male; Oxygen Consumption; Physical Exertion; Recovery of Function; Soccer; Time Factors; Young Adult; lactic acid; lactic acid derivative; adult; Article; biomechanics; clinical protocol; exercise recovery; fatigue; heart rate; human; human experiment; lactate blood level; male; multicenter study; musculoskeletal function; normal human; oxygen consumption; priority journal; soccer; soccer specific exercise protocol; sports medicine; time; biomechanics; blood; convalescence; exercise; exercise test; pathophysiology; physiology; procedures; soccer; time factor; young adult","Andersson H., Raastad T., Nilsson J., Paulsen G., Garthe I., Kadi F., Neuromuscular fatigue and recovery in elite female soccer: Effects of active recovery, Medicine and Science in Sports and Exercise, 40, pp. 372-380, (2008); Barrett S., Midgley A., Lovell R., PlayerLoad™: Reliability, convergent validity, and influence of unit position during treadmill running, International Journal of Sports Physiology and Performance, 9, pp. 945-952, (2014); Barron D.J., Atkins S., Edmundson C., Fewtrell D., Accelerometer derived load according to playing position in competitive youth soccer, International Journal Performance Analysis in Sport, 14, pp. 734-743, (2014); Borg G., Perceived Exertion as an indicator of somatic stress, Scandinavian Journal of Rehabilitation Medicine, 2, pp. 92-98, (1970); Boyd L.J., Ball K., Aughey R.J., The reliability of MinimaxX accelerometers for measuring physical activity in Australian football, International Journal of Sports Physiology, 6, pp. 311-321, (2011); Carling C., Gregson W., McCall A., Moreira A., Wong P., Bradley P.S., Match running performance during fixture congestion in elite soccer: Research issues and future directions, Sports Medicine, 45, 5, pp. 605-613, (2015); Carling C., Le Gall F., Dupont G., Are physical performance and injury risk in a professional soccer team in match-play affected over a prolonged period of fixture congestion?, International Journal of Sports Medicine, 33, 1, pp. 36-42, (2012); Carling C., Orhant E., Legall F., Match injuries in professional soccer: Inter-seasonal variation and effects of competition type, match congestion and positional role, International Journal of Sports Medicine, 31, 4, pp. 271-276, (2010); Dellal A., Lago-Penas C., Rey E., Chamari K., Orhant E., The effects of a congested fixture period on physical performance, technical activity and injury rate during matches in a professional soccer team, British Journal of Sports Medicine, 49, 6, pp. 390-394, (2015); Dupont G., Nedelec M., Mccall A., Mccormack D., Berthoin S., Wisloff U., Effect of 2 soccer matches in a week on physical performance and injury rate, American Journal of Sports Medicine, 38, pp. 1752-1758, (2010); Ekstrand J., Hagglund M., Walden M., Epidemiology of muscle injuries in professional football (soccer), American Journal of Sports Medicine, 39, 6, pp. 1226-1232, (2011); Folgado H., Duarte R., Marques P., Sampaio J., The effects of congested fixture period on tactical and physical performance in elite football, Journal of Sports Science, 33, 12, pp. 1238-1247, (2015); Greig M., McNaughton L.R., Lovell R.J., Physiological and mechanical response to soccer-specific intermittent activity and steady-state activity, Research in Sports Medicine, 14, pp. 29-52, (2006); Halson S.L., Monitoring training load to understand fatigue in athletes, Sports Medicine, 44, 2, pp. 139-147, (2014); Ispirlidis I., Fatouros I., Jamurtas A.Z., Nikolaidis M.G., Michailidis I., Douroudos I., Et al., Time-course of changes in inflammatory and performance responses following a soccer game, Clinical Journal of Sport Medicine, 18, pp. 423-431, (2008); Jones A.M., Doust J.H., 1% treadmill grade most accurately reflects the energetic cost of outdoor running, Journal of Sports Sciences, 14, pp. 321-327, (1996); Krustrup P., Mohr M., Steensberg A., Bencke J., Kjaer M., Bangsbo J., Muscle and blood metabolites during a soccer game: Implications for sprint performance, Medicine and Science in Sports and Exercise, 38, 6, pp. 1165-1174, (2006); Lambert E.V., St Clair Gibson A., Noakes T.D., Complex system model of fatigue: Integrative homeostatic control of peripheral physiological systems during exercise in humans, British Journal of Sports Medicine, 39, pp. 52-62, (2005); Magalhaes J., Rebelo A., Oliveira E., Silva J.R., Marques F., Ascensao A., Impact of Loughborough Intermittent Shuttle Test versus soccer match on physiological, biochemical and neuromuscular parameters, European Journal of Applied Physiology, 108, pp. 39-48, (2010); Mohr M., Draganidis D., Chatzinkolaou A., Barbero-Alvarex J.C., Castagna C., Douroudos I., Et al., Muscle damage, inflammatory, immune and performance responses to three football games in 1 week in competitive male players, European Journal of Applied Physiology, 116, 1, pp. 179-193, (2016); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, Journal of Sports Science, 21, pp. 519-528, (2003); Nedelec M., Mccall A., Carling C., Legall F., Berthoin S., Dupont G., Recovery in soccer: Part ii-recovery strategies, Sports Medicine, 43, 1, pp. 9-22, (2013); Odetoyinbo K., Wooster B., Lane A., The effect of a succession of matches on the activity profiles of professional soccer players, Science and football VI, pp. 105-108, (2007); Page R., Marrin K., Brogden C., Greig M., Biomechanical and physiological response to a contemporary soccer match-play simulation, Journal of Strength and Conditioning Research, 29, 10, pp. 2860-2866, (2015); Rae D.E., Stephenson K.J., Roden L.C., Factors to consider when assessing diurnal variation in sports performance - The influence of chronotype and habitual training time-of-day, European Journal of Applied Physiology, 115, 6, pp. 1339-1349, (2015); Rhea M.R., Landers D.M., Alvar B.A., Arent S.M., The effects of competition and the presence of an audience on weight lifting performance, Journal Strength and Conditioning Research, 17, 2, pp. 303-306, (2003); Richardson J.T.E., Eta squared and partial eta squared as measures of effect size in educational research, Education Research Review, 6, 22, pp. 135-147, (2011); Rollo I., Impellizzeri F.M., Zago M., Laia F.M., Effects of 1 versus 2 games a week on physical and subjective scores of subelite soccer players, International Journal of Sports Physiology and Performance, 9, pp. 425-431, (2014); Scott B.R., Lockie R.G., Knight T.J., Clark A.C., Janse De Jonge X.A., A comparison of methods to quantify the in-season training load of professional soccer players, International Journal of Sports Physiology and Performance, 8, pp. 195-202, (2013); Smith M.R., Marcora S.M., Coutts A.J., Mental fatigue impairs intermittent running performance, Medicine and Science in Sports and Exercise, 47, 8, pp. 1682-1690, (2015); Spencer M., Lawrence S., Rechichi C., Bishop D., Dawson B., Goodman C., Time-motion analysis of elite field hockey, with special reference to repeated-sprint activity, Journal of Sports Science, 22, pp. 843-850, (2004); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of Soccer: An update, Sports Medicine, 35, 6, pp. 501-536, (2005); Winchester R., Turner L.A., Thomas K., Ansley L., Thompson K.G., Mickelwright D., Et al., Observer effects on the rating of perceived exertion and affect during exercise in recreationally active males, Perceptual Motor Skills, 115, 1, pp. 213-227, (2012)","R.M. Page; Sports Injuries Research Group, Dept. of Sport & Physical Activity, Edge Hill University, Ormskirk, St. Helens Road, L39 4QP, United Kingdom; email: richard.page@edgehill.ac.uk","","Churchill Livingstone","1466853X","","PTSHB","27614926","English","Phys. Ther. Sport","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84989927254" "Lees A.; Rahnama N.","Lees, Adrian (7202900498); Rahnama, Nader (56017323800)","7202900498; 56017323800","Variability and typical error in the kinematics and kinetics of the maximal instep kick in soccer","2013","Sports Biomechanics","12","3","","283","292","9","15","10.1080/14763141.2012.759613","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884503418&doi=10.1080%2f14763141.2012.759613&partnerID=40&md5=2ae33e035c0779cf23660f905e85bc14","Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom; University of Isfahan, Isfahan, Iran","Lees A., Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom; Rahnama N., Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom, University of Isfahan, Isfahan, Iran","The purpose of this paper was to establish the variability and typical error of kinematic and kinetic variables representing the maximal instep kick in soccer for both the kicking and support legs. Ten skilled (good amateur or semi-professional) soccer players performed 20 maximal instep kicks of a stationary ball into a goal mouth. Motion of the kicking and support legs was recorded by an optoelectronic motion analysis system, and a six degrees of freedom model was used to compute kinematic and kinetic variables. Participants repeated the kicks on a second day at least 1 week later. The mean within-subject coefficient of variation across the kinematic and kinetic variables, trials, and days was 16% and did not change substantially as trial number increased or between day of test. Increasing trial number reduced the typical error (as determined by the standard error of the mean) such that for 20 trials 75% of the variables were below an arbitrary 5% threshold. It was concluded that for kicking investigations, 10-15 trials could be used and typical errors of 5% should be expected. © 2013 Copyright Taylor and Francis Group, LLC.","between-day; coefficient of variation; Kicking; within-subject","Adult; Athletic Performance; Biomechanical Phenomena; Humans; Imaging, Three-Dimensional; Lower Extremity; Movement; Reproducibility of Results; Soccer; Video Recording; Young Adult; adult; article; athletic performance; biomechanics; human; leg; movement (physiology); physiology; reproducibility; soccer; three dimensional imaging; videorecording; young adult","Bartlett R., Bussey M., Flyger N., Movement variability cannot be determined reliably from no-marker conditions, Journal of Biomechanics, 39, pp. 3076-3079, (2006); Bartlett R., Wheat J., Robins M., Is movement variability important for sports biomechanists, Sports Biomechanics, 6, pp. 224-243, (2007); Batterham A.M., Atkinson G., How big does my sample need to be? A primer on the murky world of sample size estimation, Physical Therapy in Sport, 6, pp. 153-163, (2005); Chow J.Y., Davids K., Button C., Koh M., Organisation of motor degrees of freedom during the soccer chip: An analysis of skilled performance, International Journal of Sport Psychology, 37, pp. 207-229, (2005); Dempster W.T., Space requirements of the seated operator (WADC Technical Report, 55-159), (1955); Egan C.D., Vwerheul M.H.G., Savelsbergh G.J.P., Effects of experience on the coordination of internally and externally timed soccer kicks, Journal of Motor Behaviour, 39, pp. 423-432, (2007); Hopkins W., Measures of reliability in sports medicine and science, Sports Medicine, 30, pp. 1-15, (2000); Hunter J.P., Marshall R.N., McNair P., Reliability of biomechanical variables of sprint running, Medicine and Science in Sports and Exercise, 36, pp. 850-861, (2004); Lees A., Nolan L., Three dimensional kinematic analysis of the instep kick under speed and accuracy conditions, Science and football IV, pp. 16-21, (2002); Lees A., Steward I., Rahnama N., Barton G., Lower limb function in the maximal instep kick in soccer, Contemporary sport, leisure and ergonomics, pp. 149-160, (2009); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of the instep kick in soccer, Journal of Sports Sciences, 24, pp. 11-22, (2006); Phillips S.J., Invariance of elite kicking performance, Biomechanics IX-B, pp. 539-542, (1985); Salo A., Grimshaw P.N., An examination of kinematic variability of motion analysis in sprint hurdles, Journal of Applied Biomechanics, 14, pp. 211-222, (1998)","A. Lees; Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, L2 3AF, Byrom Street, United Kingdom; email: a.lees@ljmu.ac.uk","","","17526116","","","24245053","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-84884503418" "Lanier A.S.; Knarr B.A.; Stergiou N.; Snyder-Mackler L.; Buchanan T.S.","Lanier, Amelia S. (57200253644); Knarr, Brian A. (36069600600); Stergiou, Nicholas (7004254944); Snyder-Mackler, Lynn (7006751957); Buchanan, Thomas S. (7103223185)","57200253644; 36069600600; 7004254944; 7006751957; 7103223185","ACL injury and reconstruction affect control of ground reaction forces produced during a novel task that simulates cutting movements","2020","Journal of Orthopaedic Research","38","8","","1746","1752","6","12","10.1002/jor.24604","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85085259614&doi=10.1002%2fjor.24604&partnerID=40&md5=e7a47d102f5a6ec8a9e666d0382ba65a","Department of Biomechanics, Center for Research in Human Movement Variability, University of Nebraska at Omaha, Omaha, NE, United States; Department of Environmental, Agricultural and Occupational Health, College of Public Health, University of Nebraska Medical Center, Omaha, NE, United States; Department of Physical Therapy, University of Delaware, Newark, DE, United States; Biomechanics and Movement Science Program, College of Engineering, University of Delaware, Newark, DE, United States; Delaware Rehabilitation Institute, University of Delaware, Newark, DE, United States","Lanier A.S., Department of Biomechanics, Center for Research in Human Movement Variability, University of Nebraska at Omaha, Omaha, NE, United States; Knarr B.A., Department of Biomechanics, Center for Research in Human Movement Variability, University of Nebraska at Omaha, Omaha, NE, United States; Stergiou N., Department of Biomechanics, Center for Research in Human Movement Variability, University of Nebraska at Omaha, Omaha, NE, United States, Department of Environmental, Agricultural and Occupational Health, College of Public Health, University of Nebraska Medical Center, Omaha, NE, United States; Snyder-Mackler L., Department of Physical Therapy, University of Delaware, Newark, DE, United States, Biomechanics and Movement Science Program, College of Engineering, University of Delaware, Newark, DE, United States; Buchanan T.S., Biomechanics and Movement Science Program, College of Engineering, University of Delaware, Newark, DE, United States, Delaware Rehabilitation Institute, University of Delaware, Newark, DE, United States","After anterior cruciate ligament (ACL) injury and reconstruction, biomechanical and neuromuscular control deficits persist and 25% of those who have experienced an ACL injury will experience a second ACL rupture in the first year after returning to sports. There remains a need for improved rehabilitation and the ability to detect an individual's risk of secondary ACL rupture. Nonlinear analysis metrics, such as the largest Lyapunov exponent (LyE) can provide new biomechanical insight in this population by identifying how movement patterns evolve over time. The purpose of this study was to determine how ACL injury, ACL reconstruction (ACLR), and participation in high-performance athletics affect control strategies, evaluated through nonlinear analysis, produced during a novel task that simulates forces generated during cutting movements. Uninjured recreational athletes, those with ACL injury who have not undergone reconstruction (ACLD [ACL deficient]), those who have undergone ACL reconstruction, and high-performance athletes completed a task that simulates cutting forces. The LyE calculated from forces generated during this novel task was greater (ie, force control was diminished) in the involved limb of ACLD and ACLR groups when compared with healthy uninjured controls and high-performance athletes. These data suggest that those who have experienced an ACL injury and subsequent reconstructive surgery exhibit poor force control when compared with both uninjured controls and high-performance athletes. Clinical significance: significantly larger LyE values after ACL injury and reconstruction when compared with healthy athletes suggest a continuing deficit in force control not addressed by current rehabilitation protocols and evaluation metrics that could contribute to secondary ACL rupture. © 2020 Orthopaedic Research Society. Published by Wiley Periodicals, Inc.","ACL; biomechanics; injury; kinematics and kinetics; knee; nonlinear; reconstruction; variability","Adolescent; Adult; Anterior Cruciate Ligament Injuries; Anterior Cruciate Ligament Reconstruction; Case-Control Studies; Female; Humans; Male; Middle Aged; Sports; Young Adult; adolescent; adult; anterior cruciate ligament injury; anterior cruciate ligament reconstruction; Article; biomechanics; clinical article; controlled study; female; ground reaction force; human; kinematics; knee function; male; motor control; movement (physiology); priority journal; soccer player; anterior cruciate ligament injury; anterior cruciate ligament reconstruction; case control study; middle aged; pathophysiology; physiology; sport; young adult","Bates N.A., Hewett T.E., Motion analysis and the anterior cruciate ligament: classification of injury risk, J Knee Surg, 29, pp. 117-125, (2015); Miyasaka K., Daniel D., Stone M., Hirshman P., The incidence of knee ligament injuries in the general population, Am J Knee Surg, 4, 46, pp. 43-48, (1991); Prodromos C.C., Finkle S.M., Joyce B.T., The economics of anterior cruciate ligament tear and reconstruction, The Anterior Cruciate Ligament: Reconstruction and Basic Science, pp. 66-70, (2017); Wiggins A.J., Grandhi R.K., Schneider D.K., Stanfield D., Webster K.E., Myer G.D., Risk of secondary injury in younger athletes after anterior cruciate ligament reconstruction: a systematic review and meta-analysis, Am J Sports Med, 44, pp. 1861-1876, (2016); Muaidi Q.I., Nicholson L.L., Refshauge K.M., Adams R.D., Roe J.P., Effect of anterior cruciate ligament injury and reconstruction on proprioceptive acuity of knee rotation in the transverse plane, Am J Sports Med, 37, 8, pp. 1618-1626, (2009); Besier T.F., Lloyd D., External loading of the knee joint during running and cutting maneuvers, Med Sci Sport Exerc, 33, 7, pp. 1168-1175, (2001); Daniel D.M., Stone M.L., Dobson B.E., Fithian D.C., Rossman D.J., Kaufman K.R., Fate of the ACL-injured patient, Am J Sports Med, 22, 5, pp. 632-644, (1994); Prodromos C.C., Han Y., Rogowski J., Joyce B., Shi K., A meta-analysis of the incidence of anterior cruciate ligament tears as a function of gender, sport, and a knee injury-reduction regimen, Arthroscopy, 23, 12, pp. 1320-1325, (2007); Hader K., Mendez-Villanueva A., Ahmaidi S., Williams B.K., Buchheit M., Changes of direction during high-intensity intermittent runs: neuromuscular and metabolic responses, BMC Sports Sci Med Rehabil, 6, 1, (2014); de Hoyo M., Gonzalo-Skok O., Sanudo B., Et al., Comparative effects of in-season full-back squat, resisted sprint training, and plyometric training on explosive performance in U-19 elite soccer players, J Strength Cond Res, 30, 2, pp. 368-377, (2016); Decker L.M., Moraiti C., Stergiou N., Georgoulis A.D., New insights into anterior cruciate ligament deficiency and reconstruction through the assessment of knee kinematic variability in terms of nonlinear dynamics, Knee Surg, Sport Traumatol Arthrosc, 19, pp. 1620-1633, (2011); Stergiou N., Decker L.M., Human movement variability, nonlinear dynamics, and pathology: is there a connection?, Hum Mov Sci, 30, 5, pp. 869-888, (2011); Dingwell J.B., Cusumano J.P., Nonlinear time series analysis of normal and pathological human walking, Chaos, 10, 2000, pp. 848-863, (2000); Wurdeman S.R., Myers S.A., Stergiou N., Transtibial amputee joint motion has increased attractor divergence during walking compared to non-amputee gait, Ann Biomed Eng, 41, 4, pp. 806-813, (2013); Wurdeman S.R., Myers S.A., Jacobsen A.L., Stergiou N., Adaptation and prosthesis effects on stride-to-stride fluctuations in amputee gait, PLoS One, 9, 6, (2014); Stergiou N., Moraiti C., Giakas G., Ristanis S., Georgoulis A.D., The effect of the walking speed on the stability of the anterior cruciate ligament deficient knee, Clin. Biomech., 19, 9, pp. 957-963, (2004); Moraiti C.O., Stergiou N., Vasiliadis H.S., Motsis E., Georgoulis A., Anterior cruciate ligament reconstruction results in alterations in gait variability, Gait Posture, 32, 2, pp. 169-175, (2010); Lanier A., Knarr B., Stergiou N., Buchanan T., A novel and safe approach to simulate cutting movements using ground reaction forces, Sensors, 18, 8, (2018); Abarbanel H.D.I., Brown R., Sidorowich J.J., Tsminring L.S., The analysis of observed chaotic data in physical systems, Rev Mod Phys, 65, 4, pp. 1331-1392, (1993); Wolf A., Swift J.B., Swinney H.L., Vastano J.A., Determining Lyapunov exponents from a time series, Phys. D Nonlinear Phenom, 16, pp. 285-317, (1985); Laurin J., Pin-Barre C., Bernard G., Dousset E., Decherchi P., Functional and neuromuscular changes after anterior cruciate ligament rupture in rats, Med Sci Sports Exerc, 48, pp. 1033-1043, (2015); Kapreli E., Athanasopoulos S., Gliatis J., Et al., Anterior cruciate ligament deficiency causes brain plasticity: a functional MRI study, Am J Sport. Med, 37, 12, pp. 2419-2426, (2009); Lepley A.S., Gribble P.A., Thomas A.C., Tevald M.A., Sohn D.H., Pietrosimone B.G., Quadriceps neural alterations in anterior cruciate ligament reconstructed patients: a 6-month longitudinal investigation, Scand J Med Sci Sport., 25, 6, pp. 828-839, (2015); Lepley A.S., Ericksen H.M., Sohn D.H., Pietrosimone B.G., Contributions of neural excitability and voluntary activation to quadriceps muscle strength following anterior cruciate ligament reconstruction, Knee, 21, 3, pp. 736-742, (2014); Stergiou N., Harbourne R., Cavanaugh J., Optimal movement variability: a new theoretical perspective for neurologic physical therapy, J Neurol Phys Ther, 30, 3, pp. 120-129, (2006); Harrison S.J., Stergiou N., Complex adaptive behavior and dexterous action, Nonlinear Dyn Psychol Life Sci, 19, 4, pp. 345-394, (2015); Culvenor A.G., Alexander B.C., Clark R.A., Et al., Dynamic single-leg postural control is impaired bilaterally following ACL reconstruction: implications for reinjury risk, J Orthop Sports Phys Ther, 46, pp. 357-364, (2016); Clagg S., Paterno M.V., Hewett T.E., Schmitt L.C., Performance on the modified star excursion balance test at the time of return to sport following anterior cruciate ligament reconstruction, J Orthop Sports Phys Ther, 45, 6, pp. 444-452, (2015); Paterno M.V., Schmitt L.C., Ford K.R., Et al., Biomechanical measures during landing and postural stability predict second anterior cruciate ligament injury after anterior cruciate ligament reconstruction and return to sport, Am J Sports Med, 38, 10, pp. 1968-1978, (2010); LaPrade C.M., Smith S.D., Rasmussen M.T., Et al., Consequences of tibial tunnel reaming on the meniscal roots during cruciate ligament reconstruction in a cadaveric model, part 1: the anterior cruciate ligament, Am J Sport Med., 43, 1, pp. 200-206, (2015); Watson J.N., Wilson K.J., LaPrade C.M., Et al., Iatrogenic injury of the anterior meniscal root attachments following anterior cruciate ligament reconstruction tunnel reaming, Knee Surg, Sport Traumatol Arthrosc, 23, pp. 2360-2366, (2014); Georgoulis A.D., Pappa L., Moebius U., Et al., The presence of proprioceptive mechanoreceptors in the remnants of the ruptured ACL as a possible source of re-innervation of the ACL autograft, Knee Surg, Sport Traumatol Arthrosc, 9, 6, pp. 364-368, (2001); Pollard C.D., Stearns K.M., Hayes A.T., Heiderscheit B.C., Altered lower extremity movement variability in female soccer players during side-step cutting after anterior cruciate ligament reconstruction, Am J Sports Med, 43, pp. 460-465, (2014); Macleod T.D., Neuromuscular Coordination Impairments: The Effect of ACL Injury and Reconstruction [Phd. Dissertation]., (2011); Georgoulis A.D., Papadonikolakis A., Three-dimensional tibiofemoral kinematics of the anterior cruciate ligament-deficient and reconstructed knee during walking, Am J Sports Med, 31, 1, pp. 75-79, (2003); Hofbauer M., Thorhauer E.D., Abebe E., Bey M., Tashman S., Altered tibiofemoral kinematics in the affected knee and compensatory changes in the contralateral knee after anterior cruciate ligament reconstruction, Am J Sports Med, 42, pp. 2715-2721, (2014)","A.S. Lanier; Department of Biomechanics, Center for Research in Human Movement Variability, University of Nebraska at Omaha, Omaha, United States; email: alanier@unomaha.edu","","John Wiley and Sons Inc.","07360266","","JORED","31971281","English","J. Orthop. Res.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85085259614" "Cortes N.; Greska E.; Ambegaonkar J.P.; Kollock R.O.; Caswell S.V.; Onate J.A.","Cortes, Nelson (23033673100); Greska, Eric (39961575800); Ambegaonkar, Jatin P. (12805539400); Kollock, Roger O. (24080964000); Caswell, Shane V. (7004094560); Onate, James A. (7004831141)","23033673100; 39961575800; 12805539400; 24080964000; 7004094560; 7004831141","Knee kinematics is altered post-fatigue while performing a crossover task","2014","Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA","22","9","","2202","2208","6","15","10.1007/s00167-013-2673-y","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85027943013&doi=10.1007%2fs00167-013-2673-y&partnerID=40&md5=3b56debc40272b4bda73f8b8470b2c05","Sports Medicine Assessment, Research & Testing (SMART) Laboratory, George Mason University, Manassas, VA, United States","Cortes N., Sports Medicine Assessment, Research & Testing (SMART) Laboratory, George Mason University, Manassas, VA, United States; Greska E., Sports Medicine Assessment, Research & Testing (SMART) Laboratory, George Mason University, Manassas, VA, United States; Ambegaonkar J.P., Sports Medicine Assessment, Research & Testing (SMART) Laboratory, George Mason University, Manassas, VA, United States; Kollock R.O., Sports Medicine Assessment, Research & Testing (SMART) Laboratory, George Mason University, Manassas, VA, United States; Caswell S.V., Sports Medicine Assessment, Research & Testing (SMART) Laboratory, George Mason University, Manassas, VA, United States; Onate J.A., Sports Medicine Assessment, Research & Testing (SMART) Laboratory, George Mason University, Manassas, VA, United States","PURPOSE: To examine the effect of a sequential fatigue protocol on lower extremity biomechanics during a crossover cutting task in female soccer players.; METHODS: Eighteen female collegiate soccer players alternated between a fatigue protocol and two consecutive unanticipated crossover trials until fatigue was reached. Lower extremity biomechanics were evaluated during the crossover using a 3D motion capture system and two force plates. Repeated-measures ANOVAs analysed differences between three sequential stages of fatigue (pre, 50, 100%) for each dependent variable (α = 0.05).; RESULTS: Knee flexion angles at initial contact (IC) for pre (-32 ± 9°) and 50% (-29 ± 11°) were significantly higher than at 100% fatigue (-22 ± 9°) (p < 0.001 and p = 0.015, respectively). Knee adduction angles at IC for pre (9 ± 5°) and 50% (8 ± 4°) were significantly higher (p = 0.006 and p = 0.049, respectively) than at 100% fatigue (6 ± 4°).; CONCLUSIONS: Fatigue altered sagittal and frontal knee kinematics after 50% fatigue whereupon participants had diminished knee control at initial contact. Interventions should attempt to reduce the negative effects of fatigue on lower extremity biomechanics by promoting appropriate frontal plane alignment and increased knee flexion during fatigue status.III.","","Adolescent; Biomechanical Phenomena; Exercise Test; Fatigue; Female; Humans; Imaging, Three-Dimensional; Knee Joint; Lower Extremity; Range of Motion, Articular; Soccer; Young Adult; adolescent; biomechanics; exercise test; fatigue; female; human; joint characteristics and functions; knee; leg; pathophysiology; physiology; soccer; three dimensional imaging; young adult","","","","","14337347","","","24045915","English","Knee Surg Sports Traumatol Arthrosc","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85027943013" "Narra N.; Nikander R.; Viik J.; Hyttinen J.; Sievänen H.","Narra, Nathaniel (23976753600); Nikander, Riku (8299715300); Viik, Jari (6602170698); Hyttinen, Jari (35515938800); Sievänen, Harri (7005525254)","23976753600; 8299715300; 6602170698; 35515938800; 7005525254","Femoral neck cross-sectional geometry and exercise loading","2013","Clinical Physiology and Functional Imaging","33","4","","258","266","8","15","10.1111/cpf.12022","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878130864&doi=10.1111%2fcpf.12022&partnerID=40&md5=9a2baba0bb937f8ba9d0ce6dfa0b4206","Department of Biomedical Engineering, Tampere University of Technology, Tampere, Finland; BioMediTech, Institute of Biosciences and Medical Technology, Tampere, Finland; Department of Welfare and Human Functioning, Helsinki Metropolia University of Applied Sciences, Helsinki, Finland; Bone Research Group, UKK Institute for Health Promotion Research, Tampere, Finland","Narra N., Department of Biomedical Engineering, Tampere University of Technology, Tampere, Finland, BioMediTech, Institute of Biosciences and Medical Technology, Tampere, Finland; Nikander R., Department of Welfare and Human Functioning, Helsinki Metropolia University of Applied Sciences, Helsinki, Finland; Viik J., Department of Biomedical Engineering, Tampere University of Technology, Tampere, Finland, BioMediTech, Institute of Biosciences and Medical Technology, Tampere, Finland; Hyttinen J., Department of Biomedical Engineering, Tampere University of Technology, Tampere, Finland, BioMediTech, Institute of Biosciences and Medical Technology, Tampere, Finland; Sievänen H., Bone Research Group, UKK Institute for Health Promotion Research, Tampere, Finland","The aim of this study was to examine the association between different types of exercise loading and femoral neck cross-sectional geometry. Our data comprised proximal femur magnetic resonance (MR) images obtained from 91 female athletes and their 20 age-matched controls. The athletes were categorized according to typical training activity - high impact (high and triple jumping), odd impact (racket and soccer playing), high magnitude (power lifting), repetitive low impact (endurance running) and repetitive non-impact (swimming). Segmented MR images at two locations, narrowest cross-section of the femoral neck (narrowFN) and the cross-section at insertion of articular capsule (distalFN), were investigated to detect between group differences in shape, curvature and buckling ratio derived using image and signal analysis tools. The narrowFN results indicated that the high-impact group had weaker antero-superior (33% larger buckling ratio than controls) but stronger inferior weight-bearing region (32% smaller than controls), while the odd-impact group had stronger superior, posterior and anterior region (21% smaller buckling ratio than controls). The distalFN results indicated that the high-impact group had stronger inferior region (37% smaller buckling ratio), but the odd-impact group had stronger superior region (22% smaller buckling ratio) than the controls. Overall, the results point towards odd-impact exercise loading, with inherently varying directions of impact, associated with more robust cross-sectional geometry along the femoral neck. In conclusion, our one-dimensional polar treatment for geometrical traits and intuitive presentation of differences in trends between exercise groups and controls provides a basis for analysis with high angular accuracy. © 2013 The Authors Clinical Physiology and Functional Imaging © 2013 Scandinavian Society of Clinical Physiology and Nuclear Medicine.","Bone geometry; Bone strength; Cortical bone; Magnetic resonance imaging; Sports","Athletes; Biomechanical Phenomena; Case-Control Studies; Exercise; Female; Femur Neck; Humans; Magnetic Resonance Imaging; Weight-Bearing; article; athlete; controlled study; correlational study; endurance sport; exercise; female; femur neck; functional anatomy; human; joint capsule; jumping; nuclear magnetic resonance imaging; priority journal; racquet sport; running; soccer; swimming; weight bearing; weight lifting","Barratt D.C., Chan C.S.K., Edwards P.J., Penney G.P., Slomczykowski M., Carter T.J., Hawkes D.J., Instantiation and registration of statistical shape models of the femur and pelvis using 3D ultrasound imaging, Med Image Anal, 12, pp. 358-374, (2008); Bass S.L., Saxon L., Daly R.M., Turner C.H., Robling A.G., Seeman E., Stuckey S., The effect of mechanical loading on the size and shape of bone in pre-, peri-, and postpubertal girls: a study in tennis players, J Bone Miner Res, 17, pp. 2274-2280, (2002); Daly R.M., Bass S.L., Lifetime sport and leisure activity participation is associated with greater bone size, quality and strength in older men, Osteoporos Int, 17, pp. 1258-1267, (2006); Duncan R.L., Mechanotransduction and the functional response of bone to mechanical strain, Calcif Tissue Int, 57, pp. 344-358, (1995); Frost H.M., Bone 'mass' and the 'mechanostat': a proposal, The Anatomical record, 219, pp. 1-9, (1987); van de Giessen M., Foumani M., Streekstra G.J., Strackee S.D., Maas M., Van Vliet L.J., Grimbergen K., Vos F.M., Statistical descriptions of scaphoid and lunate bone shapes, J Biomech, 43, pp. 1463-1469, (2010); Griffith J.F., Genant H.K., New imaging modalities in bone, Curr Rheumatol Rep, 13, pp. 241-250, (2011); Heimann T., Meinzer H.-P., Statistical shape models for 3D medical image segmentation: a review, Med Image Anal, 13, pp. 543-563, (2009); Heinonen A., Sievanen H., Kyrolainen H., Perttunen J., Kannus P., Mineral mass, size, and estimated mechanical strength of triple jumpers' lower limb, Bone, 29, pp. 279-285, (2001); Johannesdottir F., Poole K.E.S., Reeve J., Siggeirsdottir K., Aspelund T., Mogensen B., Jonsson B.Y., Sigurdsson S., Harris T.B., Gudnason V.G., Sigurdsson G., Distribution of cortical bone in the femoral neck and hip fracture: a prospective case-control analysis of 143 incident hip fractures; the AGES-REYKJAVIK Study, Bone, 48, pp. 1268-1276, (2011); Kazakia G.J., Majumdar S., New imaging technologies in the diagnosis of osteoporosis, Rev Endocr Metab Disord, 7, pp. 67-74, (2006); Klein-Nulend J., Bakker A.D., Osteocytes: mechanosensors of Bone and Orchestrators of Mechanical Adaptation, Clin Rev Bone Miner Metab, 5, pp. 195-209, (2008); Manske S.L., Macdonald H.M., Nishiyama K.K., Boyd S.K., McKay H.A., Clinical Tools to Evaluate Bone Strength, Clin Rev Bone Miner Metab, 8, pp. 122-134, (2010); Mayhew P.M., Thomas C.D., Clement J.G., Loveridge N., Beck T.J., Bonfield W., Burgoyne C.J., Reeve J., Relation between age, femoral neck cortical stability, and hip fracture risk, Lancet, 366, pp. 129-135, (2005); Mourtada F.A., Beck T.J., Hauser D.L., Ruff C.B., Bao G., Curved beam model of the proximal femur for estimating stress using dual-energy X-ray absorptiometry derived structural geometry, J Orthop Res, 14, pp. 483-492, (1996); Nikander R., Sievanen H., Heinonen A., Kannus P., Femoral neck structure in adult female athletes subjected to different loading modalities, J Bone Miner Res, 20, pp. 520-528, (2005); Nikander R., Sievanen H., Uusi-Rasi K., Heinonen A., Kannus P., Loading modalities and bone structures at nonweight-bearing upper extremity and weight-bearing lower extremity: a pQCT study of adult female athletes, Bone, 39, pp. 886-894, (2006); Nikander R., Kannus P., Dastidar P., Hannula M., Harrison L., Cervinka T., Narra N.G., Aktour R., Arola T., Eskola H., Soimakallio S., Heinonen A., Hyttinen J., Sievanen H., Targeted exercises against hip fragility, Osteoporos Int, 20, pp. 1321-1328, (2009); Nikander R., Kannus P., Rantalainen T., Uusi-Rasi K., Heinonen A., Sievanen H., Cross-sectional geometry of weight-bearing tibia in female athletes subjected to different exercise loadings, Osteoporos Int, 21, pp. 1687-1694, (2010); Nikander R., Sievanen H., Heinonen A., Daly R.M., Uusi-Rasi K., Kannus P., Targeted exercise against osteoporosis: a systematic review and meta-analysis for optimising bone strength throughout life, BMC Medicine, 8, (2010); Robling A.G., Castillo A.B., Turner C.H., Biomechanical and molecular regulation of bone remodeling, Annu Rev Biomed Eng, 8, pp. 455-498, (2006); Sievanen H., A physical model for dual-energy X-ray absorptiometry-derived bone mineral density, Invest Radiol, 35, pp. 325-330, (2000); Sievanen H., Jozsa L., Pap I., Jarvinen M., Jarvinen T.A., Kannus P., Jarvinen T.L., Fragile external phenotype of modern human proximal femur in comparison with medieval bone, J Bone Miner Res, 22, pp. 537-543, (2007); Turner C.H., Three rules for bone adaptation to mechanical stimuli, Bone, 23, pp. 399-407, (1998); Turner C.H., Pavalko F.M., Mechanotransduction and functional response of the skeleton to physical stress: the mechanisms and mechanics of bone adaptation, J Orthop Sci, 3, pp. 346-355, (1998); Verhulp E., van Rietbergen B., Huiskes R., Load distribution in the healthy and osteoporotic human proximal femur during a fall to the side, Bone, 42, pp. 30-35, (2008); Yushkevich P.A., Piven J., Hazlett H.C., Smith R.G., Ho S., Gee J.C., Gerig G., User-guided 3D active contour segmentation of anatomical structures: significantly improved efficiency and reliability, NeuroImage, 31, pp. 1116-1128, (2006)","N. Narra; Department of Biomedical Engineering, Tampere University of Technology, Finn-Medi 1 L 4, Biokatu 6, FI-33520, Tampere, Finland; email: nathaniel.narragirish@tut.fi","","","1475097X","","CPFIC","23692614","English","Clin. Physiol. Funct. Imaging","Article","Final","","Scopus","2-s2.0-84878130864" "Peacock J.; Ball K.; Taylor S.","Peacock, James (57193082900); Ball, Kevin (7101771783); Taylor, Simon (15758637300)","57193082900; 7101771783; 15758637300","The impact phase of drop punt kicking for maximal distance and accuracy","2017","Journal of Sports Sciences","35","23","","2289","2296","7","16","10.1080/02640414.2016.1266015","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85010660801&doi=10.1080%2f02640414.2016.1266015&partnerID=40&md5=54f4463f558d1a85c130d1bf08591bb7","Institute of Sport, Exercise and Active Living, Victoria University, Melbourne, Australia; College of Sport and Exercise Science, Victoria University, Melbourne, Australia","Peacock J., Institute of Sport, Exercise and Active Living, Victoria University, Melbourne, Australia, College of Sport and Exercise Science, Victoria University, Melbourne, Australia; Ball K., Institute of Sport, Exercise and Active Living, Victoria University, Melbourne, Australia, College of Sport and Exercise Science, Victoria University, Melbourne, Australia; Taylor S., Institute of Sport, Exercise and Active Living, Victoria University, Melbourne, Australia, College of Sport and Exercise Science, Victoria University, Melbourne, Australia","Impact is an important aspect of the kicking skill. This study examined foot and ball motion during impact and compared distance and accuracy punt kicks. Two-dimensional high-speed video (4000 Hz) captured data of the shank, foot and ball through impact of 11 elite performers kicking for maximal distance and towards a target 20 m in distance. Four phases were identified during impact, with an overall reduction in foot velocity of 5.0 m · s−1 (± 1.1 m · s−1) and increase in ball velocity of 22.7 m · s−1 (± 2.3 m · s−1) from the start to end of contact. Higher foot velocity was found in distance compared to accuracy kicks (22.1 ± 1.6 m · s−1 vs. 17.7 ± 0.9 m · s−1, P < 0.05), and was considered to produce the significant differences in all impact characteristics excluding foot-to-ball speed ratio. Ankle motion differed between the kicking tasks; distance kicks were characterised by greater rigidity compared to accuracy kicks evident by larger force (834 ± 107 N vs. 588 ± 64 N) and smaller change in ankle angle (2.2 ± 3.3° vs. 7.2 ± 6.4°). Greater rigidity was obtained by altering the position of the ankle at impact start; distance kicks were characterised by greater plantarflexion (130.1 ± 5.8° vs. 123.0 ± 7.9°, P < 0.05), indicating rigidity maybe actively controlled for specific tasks. © 2017 Informa UK Limited, trading as Taylor & Francis Group.","Australian football; drop punt kicking; energy transfer; high speed video; rigidity","Adult; Ankle; Biomechanical Phenomena; Foot; Humans; Male; Motor Skills; Movement; Soccer; Time and Motion Studies; ankle; energy transfer; foot; football; motion; rigidity; velocity; videorecording; adult; biomechanics; human; male; motor performance; movement (physiology); physiology; soccer; task performance","Andersen T.B., Dorge H.C., The influence of speed of approach and accuracy constraint on the maximal speed of the ball in soccer kicking, Scandinavian Journal of Medicine & Science in Sports, 21, pp. 79-84, (2011); Andersen T.B., Kristensen L.B., Sorensen H., Biomechanical differences between toe and instep kicking; influence of contact area on the coefficient of restitution, Football Science, 5, pp. 45-50, (2008); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Ball K., Biomechanical considerations of distance kicking in Australian rules football, Sports Biomechanics, 7, pp. 10-23, (2008); Ball K., Foot interaction during kicking in Australian rules football, Science and football VI: The proceedings of the sixth world congress on science and football, pp. 36-40, (2008); Ball K., Kick impact characteristics for different rugby league kicks, pp. 458-461, (2010); Ball K., Smith J., MacMahon C., Kick impact characteristics of junior kickers, Proceedings of the 28th international conference on biomechanics in sports, (2010); Cohen B.H., Welkowitz J., Lea R.B., Introductory statistics for the behavioral sciences, (2011); Cohen J., Statistical power analysis for the behavioral sciences, (1988); Cross R., Impact of sports balls with striking implements, Sports Engineering, 17, pp. 3-22, (2013); Hennig E.M., The influence of soccer shoe design on player performance and injuries, Research in Sports Medicine, 19, pp. 186-201, (2011); Holm S., A simple sequentially rejective multiple test procedure, Scandinavian Journal of Statistics, 6, pp. 65-70, (1979); Magill R.A., Anderson D., Motor learning and control: Concepts and applications, (2007); Nunome H., Ball K., Shinkai H., Myth and fact of ball impact dynamics in football codes, Footwear Science, 6, pp. 105-118, (2014); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, Journal of Sports Sciences, 24, pp. 11-22, (2006); Nunome H., Shinkai H., Ikegami Y., Ball impact kinematics and dynamics, Proceedings of the 30th International Conference on Biomechanics in Sports, (2012); Peacock J., Comparison of foot to ball interaction in Australian football in elite males, (2013); Peacock J., Ball K., The impact phase of drop punt kicking: Validation and experimental data of a mechanical kicking limb, (2016); Plagenhoef S., Patterns of human motion: A cinematographic analysis, (1971); Shinkai H., Nunome H., Isokawa M., Ikegami Y., Ball impact dynamics of instep soccer kicking, Medicine & Science in Sports & Exercise, 41, pp. 889-897, (2009); Smith J., Ball K., MacMahon C., Foot-to-ball interaction in preferred and non-preferred leg Australian rules kicking, (2009); Sterzing T., Hennig E.M., The influence of soccer shoes on kicking velocity in full-instep kicks, Exercise and Sport Sciences Reviews, 36, pp. 91-97, (2008); Tol J.L., Slim E., van Soest A.J., van Dijk C.N., The relationship of the kicking action in soccer and anterior ankle impingement syndrome: A biomechanical analysis, The American Journal of Sports Medicine, 30, pp. 45-50, (2002); Tsaousidis N., Zatsiorsky V., Two types of ball-effector interaction and their relative contribution to soccer kicking, Human Movement Science, 15, pp. 861-876, (1996); Winter D.A., Biomechanics and motor control of human movement, (2009)","J. Peacock; Victoria University, Melbourne, Footscray Park Campus, Ballarat Road, 3011, Australia; email: james.peacock@live.vu.edu.au","","Routledge","02640414","","JSSCE","28112577","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85010660801" "Cockcroft J.; Van Den Heever D.","Cockcroft, John (39961275200); Van Den Heever, Dawie (54893200600)","39961275200; 54893200600","A descriptive study of step alignment and foot positioning relative to the tee by professional rugby union goal-kickers","2016","Journal of Sports Sciences","34","4","","321","329","8","13","10.1080/02640414.2015.1050599","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85027944000&doi=10.1080%2f02640414.2015.1050599&partnerID=40&md5=dee0769455ef046ac95e1163cdf669b4","Department of Mechanical and Mechatronic Engineering, Stellenbosch University, Stellenbosch, South Africa","Cockcroft J., Department of Mechanical and Mechatronic Engineering, Stellenbosch University, Stellenbosch, South Africa; Van Den Heever D., Department of Mechanical and Mechatronic Engineering, Stellenbosch University, Stellenbosch, South Africa","This study describes foot positioning during the final two steps of the approach to the ball amongst professional rugby goal-kickers. A 3D optical motion capture system was used to test 15 goal-kickers performing 10 goal-kicks. The distance and direction of each step, as well as individual foot contact positions relative to the tee, were measured. The intra- and inter-subject variability was calculated as well as the correlation (Pearson) between the measurements and participant anthropometrics. Inter-subject variability for the final foot position was lowest (placed 0.03 ± 0.07 m behind and 0.33 ± 0.03 m lateral to the tee) and highest for the penultimate step distance (0.666 ± 0.149 m), performed at an angle of 36.1 ± 8.5° external to the final step. The final step length was 1.523 ± 0.124 m, executed at an external angle of 35.5 ± 7.4° to the target line. The intra-subject variability was very low; distances and angles for the 10 kicks varied per participant by 1.6–3.1 cm and 0.7–1.6°, respectively. The results show that even though the participants had variability in their run-up to the tee, final foot position next to the tee was very similar and consistent. Furthermore, the inter- and intra-subject variability could not be attributed to differences in anthropometry. These findings may be useful as normative reference data for coaching, although further work is required to understand the role of other factors such as approach speed and body alignment. © 2015 Taylor & Francis.","biomechanics; foot positioning; goal-kick; rugby union; run-up geometry","Adult; Anthropometry; Biomechanical Phenomena; Foot; Humans; Male; Motor Skills; Soccer; Time and Motion Studies; Young Adult; adult; anthropometry; biomechanics; foot; human; male; motor performance; physiology; soccer; task performance; young adult","Baktash S., Hy A., Muir S., Walton T., Zhang Y., The effects of different instep foot positions on ball velocity in place kicking, International Journal of Sports Science and Engineering, 3, 2, pp. 85-92, (2009); Ball K., Biomechanical considerations of distance kicking in Australian rules football, Sports Biomechanics, 7, 1, pp. 10-23, (2008); Ball K., Loading and performance of the support leg in kicking, Journal of Science and Medicine in Sport, 16, pp. 455-459, (2013); Ball K., Talbert D., Taylor S., Biomechanics of goal-kicking in rugby league, Science and football VII, pp. 47-52, (2013); Barfield W., Kirkendall D., Yu B., Kinematic instep kicking differences between elite female and male soccer players, Journal of Sport Science and Medicine, 1, pp. 72-79, (2002); Bezodis N., Trewartha G., Wilson C., Irwin G., Contributions of the non-kicking-side arm to rugby place-kicking technique, Sports Biomechanics, 6, 2, pp. 171-186, (2007); Egan C., Verheul M., Savelsbergh G., Effects of experience on the coordination of internally and externally timed soccer kicks, Journal of Motor Behavior, 39, 5, pp. 423-432, (2007); Harrison A., Mannering A., A biomechanical analysis of the instep kick in soccer with preferred and non-preferred foot, XXIV ISBS symposium, (2006); Hart N., Nimphius S., Dorman C., Newton R., Influence of leg strength and lean mass on kicking accuracy in Australian football, Journal of Australian Strength and Conditioning, 21, pp. 99-101, (2013); Hay J., The biomechanics of sports techniques, (1985); Hof A.L., Scaling gait data to body size, Gait & Posture, 4, 3, pp. 222-223, (1996); Isokawa M., Lees A., A biomechanical analysis of the instep kick motion in soccer, Science and soccer, pp. 449-455, (1988); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sport Science and Medicine, 6, pp. 154-165, (2007); Lees A., Asai T., Andersen T., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, 8, pp. 805-817, (2010); Lees A., Nolan L., Three dimensional kinematic analysis of the instep kick under speed and accuracy conditions, Science and football IV, pp. 16-21, (2002); McLean B., Tumilty D., Left-right asymmetry in two types of soccer kick, British Journal of Sports Medicine, 27, 4, pp. 260-262, (1993); Padulo J., Granatelli G., Ruscello B., D'Ottavio S., The place kick in rugby, The Journal of Sports Medicine and Physical Fitness, 53, 3, pp. 224-231, (2013); Phillips S., Invariance of elite kicking performance, Biomechanics IX-B, pp. 539-542, (1985); Scurr J., Hall B., The effects of approach angle on penalty kicking accuracy and kick kinematics with recreational soccer players, Journal of Sport Science and Medicine, 8, pp. 230-234, (2009); Stoner L., Ben-Sira D., Variation in movement patterns of professional soccer players when executing a long range and a medium range in-step soccer kick, Biomechanics VII-B: International series on Biomechanics, pp. 337-341, (1981); Zhang Y., Liu G., Xie S., Movement sequences during instep rugby kick: A 3D biomechanical analysis, International Journal of Sport Science and Engineering, 6, 2, pp. 89-95, (2012)","D. Van Den Heever; Department of Mechanical and Mechatronic Engineering, Stellenbosch University, South Africa; email: dawie@sun.ac.za","","Routledge","02640414","","JSSCE","26023827","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-85027944000" "Dupré T.; Funken J.; Müller R.; Mortensen K.R.L.; Lysdal F.G.; Braun M.; Krahl H.; Potthast W.","Dupré, Thomas (57194794521); Funken, Johannes (56449278700); Müller, Ralf (56941244800); Mortensen, Kristian R. L. (59104597900); Lysdal, Filip Gertz (57194199957); Braun, Markus (7402740011); Krahl, Hartmut (58310508700); Potthast, Wolfgang (23035844800)","57194794521; 56449278700; 56941244800; 59104597900; 57194199957; 7402740011; 58310508700; 23035844800","Does inside passing contribute to the high incidence of groin injuries in soccer? A biomechanical analysis","2018","Journal of Sports Sciences","36","16","","1827","1835","8","15","10.1080/02640414.2017.1423193","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85040967021&doi=10.1080%2f02640414.2017.1423193&partnerID=40&md5=a2de8b921b975397bf5f0a94c9bafe58","Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, Germany; School of Medicine and Health, Aalborg University, Aalborg, Denmark; Ballspielverein Borussia 09 e.V. Dortmund, Dortmund, Germany; ARCUS Clinics Pforzheim, Pforzheim, Germany","Dupré T., Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, Germany; Funken J., Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, Germany; Müller R., Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, Germany; Mortensen K.R.L., School of Medicine and Health, Aalborg University, Aalborg, Denmark; Lysdal F.G., School of Medicine and Health, Aalborg University, Aalborg, Denmark; Braun M., Ballspielverein Borussia 09 e.V. Dortmund, Dortmund, Germany; Krahl H., Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, Germany; Potthast W., Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, Germany, ARCUS Clinics Pforzheim, Pforzheim, Germany","Groin injuries are common in soccer and often cause time-loss from training. While groin injuries have been linked to full effort kicking, the role of inside passing is unclear. Therefore, the purpose of this study was to investigate hip joint kinematics and muscle force, stress and contraction velocity for adductor longus and gracilis during inside passing. 3D kinematics of ten soccer players (23.4 yrs; 77.5 kg; 1.81 m) were captured with a motion capture system inside a Footbonaut. Muscle force and contraction velocity were determined with AnyBody Modelling System. Gracilis muscle forces were 9% lower compared to adductor longus (p = 0.005), but muscle stress was 183% higher in gracilis (p = 0.005). Contraction velocity reveals eccentric contraction of gracilis in the last quarter of the swing phase. Considering the combination of eccentric contraction, high muscle stress and the repetitive nature of inside passing, gracilis accumulates high loads in matches and training. These results indicate that the high incidence of groin injuries in soccer could be linked to isolated pass training. Practitioners need to be aware of the risk and refrain from sudden increases in the amount of pass training. This gives the musculoskeletal system time to adapt and might avoid career threatening injuries. © 2018 Informa UK Limited, trading as Taylor & Francis Group.","Footbonaut; injury risk; muscle modelling; osteitis pubis; tendinopathy","Biomechanical Phenomena; Cross-Sectional Studies; Gracilis Muscle; Groin; Hip Joint; Humans; Incidence; Male; Motor Skills; Muscle Contraction; Muscle, Skeletal; Soccer; Thigh; Time and Motion Studies; Weight-Bearing; Young Adult; biomechanics; cross-sectional study; gracilis muscle; hip; human; incidence; inguinal region; injuries; male; motor performance; muscle contraction; physiology; skeletal muscle; soccer; task performance; thigh; weight bearing; young adult","Alexander N., Schwameder H., Comparison of estimated and measured muscle activity during inclined walking, Journal of Applied Biomechanics, 32, 2, pp. 150-159, (2016); Arnason A., Sigurdsson S.B., Gudmundsson A., Holme I., Engebretsen L., Bahr R., Risk factors for injuries in football, The American Journal of Sports Medicine, 32, 1, pp. 5S-16S, (2004); Brophy R.H., Backus S.I., Pansy B.S., Lyman S., Williams R.J., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, The Journal of Orthopaedic and Sports Physical Therapy, 37, 5, pp. 260-268, (2007); Brophy R.H., Wright R.W., Powell J.W., Matava M.J., Injuries to kickers in american football: The national football league experience, The American Journal of Sports Medicine, 38, 6, pp. 1166-1173, (2010); Charnock B.L., Lewis C.L., Garrett W.E., Queen R.M., Adductor longus mechanics during the maximal effort soccer kick, Sports Biomechanics, 8, 3, pp. 223-234, (2009); Cohen J., Statistical power analysis for the behavioral sciences, (1988); Cunningham P.M., Brennan D., O'Connell M., MacMahon P., O'Neill P., Eustace S., Patterns of bone and soft-tissue injury at the symphysis pubis in soccer players: observations at mri, AJR. American Journal of Roentgenology, 188, 3, pp. W291-W296, (2007); Davies J.C., Coaching the Tiki taka style of play, (2013); Dietzsch M., David S., Dupre T., Komnik I., Potthast W., Comparing estimated and measured muscle activation during highly dynamic and multidirectional movements-a validation study, International Society of Biomechanics in Sports Conference Proceedings, 35, 1, (2017); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Aagaard H., Dyhre-Poulsen P., Klausen K., Emg activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scandinavian Journal of Medicine & Science in Sports, 9, 4, pp. 195-200, (1999); Dorge H.C., Anderson T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, 4, pp. 293-299, (2002); Ekstrand J., Hagglund M., Walden M., Epidemiology of muscle injuries in professional football (soccer), The American Journal of Sports Medicine, 39, 6, pp. 1226-1232, (2011); Ekstrand J., Hilding J., The incidence and differential diagnosis of acute groin injuries in male soccer players, Scandinavian Journal of Medicine & Science in Sports, 9, 2, pp. 98-103, (1999); Engebretsen A.H., Myklebust G., Holme I., Engebretsen L., Bahr R., Intrinsic risk factors for groin injuries among male soccer players: A prospective cohort study, The American Journal of Sports Medicine, 38, 10, pp. 2051-2057, (2010); Garrett W.E., Muscle strain injuries: Clinical and basic aspects, Medicine and Science in Sports and Exercise, 22, 4, pp. 436-443, (1990); Hagglund M., Walden M., Ekstrand J., Risk factors for lower extremity muscle injury in professional soccer: the uefa injury study, The American journal of sports medicine, 41, 2, pp. 327-335, (2013); Hagglund M., Walden M., Magnusson H., Kristenson K., Bengtsson H., Ekstrand J., Injuries affect team performance negatively in professional football: an 11-year follow-up of the uefa champions league injury study, British journal of sports medicine, 47, 12, pp. 738-742, (2013); Haroy J., Clarsen B., Thorborg K., Holmich P., Bahr R., Andersen T.E., Groin problems in male soccer players are more common than previously reported, The American Journal of Sports Medicine, (2017); Heinemeier K.M., Bjerrum S.S., Schjerling P., Kjaer M., Expression of extracellular matrix components and related growth factors in human tendon and muscle after acute exercise, Scandinavian journal of medicine & science in sports, 23, 3, pp. e150-e161, (2013); Hiti C.J., Stevens K.J., Jamati M.K., Garza D., Matheson G.O., Athletic osteitis pubis, Sports Medicine, 41, 5, pp. 361-376, (2011); Holmich P., Thorborg K., Dehlendorff C., Krogsgaard K., Gluud C., Incidence and clinical presentation of groin injuries in sub-elite male soccer, British journal of sports medicine, 48, 16, pp. 1245-1250, (2014); Ibrahim A., Murrell G.A.C., Knapman P., Adductor strain and hip range of movement in male professional soccer players, Journal of Orthopaedic Surgery (Hong Kong), 15, 1, pp. 46-49, (2007); Katis A., Kellis E., Three-dimensional kinematics and ground reaction forces during the instep and outstep soccer kicks in pubertal players, Journal of Sports Sciences, 28, 11, pp. 1233-1241, (2010); Katis A., Kellis E., Lees A., Age and gender differences in kinematics of powerful instep kicks in soccer, Sports Biomechanics, 14, 3, pp. 287-299, (2015); Kawamoto R., Miyagi O., Ohashi J., Fukashiro S., Kinetic comparison of a sidefoot soccer kick between experienced and inexperienced players, Sports Biomechanics, 6, 2, pp. 187-198, (2007); Klein Horsman M.D., Koopman H.F.J.M., van der Helm F.C.T., Poliacu Prose L., Veeger H.E.J., Morphological muscle and joint parameters for musculoskeletal modelling of the lower extremity, Clinical Biomechanics, 22, 2, pp. 239-247, (2007); Kujala U.M., Orava S., Jarvinen M., Hamstring injuries, Sports Medicine, 23, 6, pp. 397-404, (1997); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, 6, pp. 917-927, (1998); Lewin G., The incidence of injury in an english professional soccer club during one competitive season, Physiotherapy, 75, 10, pp. 601-605, (1989); Lovell G., Galloway H., Hopkins W., Harvey A., Osteitis pubis and assessment of bone marrow edema at the pubic symphysis with mri in an elite junior male soccer squad, Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine, 16, 2, pp. 117-122, (2006); Lund M.E., Andersen M.S., de Zee M., Rasmussen J., Scaling of musculoskeletal models from static and dynamic trials, International Biomechanics, 2, 1, pp. 1-11, (2015); Maffey L., Emery C., What are the risk factors for groin strain injury in sport? a systematic review of the literature, Sports Medicine (Auckland, N.Z.), 37, pp. 881-894, (2007); Mersmann F., Bohm S., Schroll A., Boeth H., Duda G.N., Arampatzis A., Muscle and tendon adaptation in adolescent athletes: A longitudinal study, Scandinavian Journal of Medicine & Science in Sports, 27, 1, pp. 75-82, (2017); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, 12, pp. 2028-2036, (2002); Orchard J.W., Men at higher risk of groin injuries in elite team sports: a systematic review, British Journal of Sports Medicine, 49, pp. 798-802, (2015); Pedret C., Balius R., Barcel P., Miguel M., Llus A., Valle X., Maffulli N., Isolated tears of the gracilis muscle, The American Journal of Sports Medicine, 39, pp. 1077-1080, (2011); Rahnama N., Reilly T., Lees A., Injury risk associated with playing actions during competitive soccer, British Journal of Sports Medicine, 36, 5, pp. 354-359, (2002); Renstrom P., Peterson L., Groin injuries in athletes, British journal of Sports Medicine, 14, 1, pp. 30-36, (1980); Ryan J., DeBurca N., Mc Creesh K., Risk factors for groin/hip injuries in field-based sports: a systematic review, British journal of sports medicine, 48, 14, pp. 1089-1096, (2014); Saal C., Krug J., Zinner J., Mayer J., Footbonaut: ein innovatives mess- und information- ssystem im fußball, Leistungssport, 45, 1, pp. 13-19, (2015); Schache A.G., Kim H.-J., Morgan D.L., Pandy M.G., Hamstring muscle forces prior to and immediately following an acute sprinting-related muscle strain injury, Gait & Posture, 32, 1, pp. 136-140, (2010); Serner A., Weir A., Tol J.L., Thorborg K., Roemer F., Guermazi A., Holmich P., Characteristics of acute groin injuries in the adductor muscles: Adetailed mri study in athletes, Scandinavian Journal of Medicine & Science in Sports, (2017); Tak I., Glasgow P., Langhout R., Weir A., Kerkhoffs G., Agricola R., Hip range of motion is lower in professional soccer players with hip and groin symptoms or previous injuries, independent of cam deformities, The American Journal of Sports Medicine, 44, 3, pp. 682-688, (2016); Walden M., Hagglund M., Ekstrand J., The epidemiology of groin injury in senior football: a systematic review of prospective studies, British Journal of Sports Medicine, 49, 12, pp. 792-797, (2015); Werner J., Hagglund M., Walden M., Ekstrand J., Uefa injury study: a prospective study of hip and groin injuries in professional football over seven consecutive seasons, British Journal of Sports Medicine, 43, 13, pp. 1036-1040, (2009); Whittaker J.L., Small C., Maffey L., Emery C.A., Risk factors for groin injury in sport: an updated systematic review, British Journal of Sports Medicine, 49, 12, pp. 803-809, (2015); Winter D.A., Biomechanics and motor control of human movement, (2009)","T. Dupré; Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, Germany; email: t.dupre@dshs-koeln.de","","Routledge","02640414","","JSSCE","29333946","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-85040967021" "Harrison A.D.; Ford K.R.; Myer G.D.; Hewett T.E.","Harrison, A.D. (57196717351); Ford, K.R. (7102539333); Myer, G.D. (6701852696); Hewett, T.E. (7005201943)","57196717351; 7102539333; 6701852696; 7005201943","Sex differences in force attenuation: A clinical assessment of single-leg hop performance on a portable force plate","2011","British Journal of Sports Medicine","45","3","","198","202","4","13","10.1136/bjsm.2009.061788","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79951916934&doi=10.1136%2fbjsm.2009.061788&partnerID=40&md5=a7f63d628e21422c68ed6eabfb3a6510","Division of Occupational and Physical Therapy, Sports Medicine Biodynamics Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229-3039, 3333 Burnet Avenue, MLC 10001, United States; Department of Health Sciences, College of Mount Saint Joseph, Cincinnati, OH, United States; Departments of Pediatrics and Orthopaedic Surgery, College of Engineering, University of Cincinnati, Cincinnati, OH, United States","Harrison A.D., Division of Occupational and Physical Therapy, Sports Medicine Biodynamics Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229-3039, 3333 Burnet Avenue, MLC 10001, United States, Department of Health Sciences, College of Mount Saint Joseph, Cincinnati, OH, United States; Ford K.R., Division of Occupational and Physical Therapy, Sports Medicine Biodynamics Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229-3039, 3333 Burnet Avenue, MLC 10001, United States; Myer G.D., Division of Occupational and Physical Therapy, Sports Medicine Biodynamics Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229-3039, 3333 Burnet Avenue, MLC 10001, United States; Hewett T.E., Division of Occupational and Physical Therapy, Sports Medicine Biodynamics Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229-3039, 3333 Burnet Avenue, MLC 10001, United States, Departments of Pediatrics and Orthopaedic Surgery, College of Engineering, University of Cincinnati, Cincinnati, OH, United States","Objective: Impaired biomechanics and neuromuscular control have been suggested as probable links to female sex bias in the onset of patellofemoral pain syndrome. There are limited objective, clinical measures for assessment of impaired biomechanics and neuromuscular control. The primary objective of this investigation was to examine sex differences in vertical ground reaction force (vGRF) and force loading rate in young athletes performing maximum, repeated vertical single-leg hops (RVSHs). The authors hypothesised that females would demonstrate greater vGRF and force loading rate than males and show interlimb differences in force attenuation. Design: Cross-sectional study. Setting: Paediatric sports medicine clinic. Participants: 109 Healthy high school, soccer and basketball athletes. Assessment of risk factors: Participants performed RVSHs for 15 seconds on a portable force plate with a sampling rate of 400 Hz (Accupower; AMTI, Watertown, Massachusetts, USA). Main outcome measurements: Raw vGRF was fi ltered with a generalised cross-validation spline using a 50-Hz cutoff frequency and then normalised to potential energy. Force loading rate was calculated by dividing normalised vGRF by time-to-peak force. Group means were compared using analysis of variance. Results The females demonstrated signifi cantly greater normalised vGRF (p<0.001) and force loading rate (p<0.001) during landing than their male counterparts. Neither sex demonstrated signifi cant interlimb differences in force attenuation (p>0.05). Conclusions The female athletes may have altered force attenuation capability during RVSHs as identifi ed by increased vGRF and force loading rate compared with the male athletes. Portable force plates may be potential tools to identify altered force attenuation in clinical settings.","","Adolescent; Basketball; Biomechanics; Cross-Sectional Studies; Female; Humans; Leg; Male; Movement; Sex Characteristics; Soccer; Sports Medicine; adolescent; article; basketball; biomechanics; cross-sectional study; female; human; instrumentation; leg; male; movement (physiology); physiology; sexual development; sport; sports medicine","Salsich G.B., Brechter J.H., Farwell D., Powers C.M., The effects of patellar taping on knee kinetics, kinematics, and vastus lateralis muscle activity during stair ambulation in individuals with patellofemoral pain, Journal of Orthopaedic and Sports Physical Therapy, 32, 1, pp. 3-10, (2002); Witvrouw E., Lysens R., Bellemans J., Et al., Which factors predict outcome in the treatment program of anterior knee pain?, Scand J Med Sci Sports, 12, pp. 40-46, (2002); Heintjes E., Berger M., Bierma-Zeinstra S., Et al., Exercise Therapy for Patellofemoral Pain Syndrome, (2005); Loudon J.K., Gajewski B., Goist-Foley H.L., Loudon K.L., The effectiveness of exercise in treating patellofemoral-pain syndrome, Journal of Sport Rehabilitation, 13, 4, pp. 323-342, (2004); Natri A., Kannus P., Jarvinen M., Which factors predict the long-term outcome in chronic patellofemoral pain syndrome? A 7-yr prospective follow-up study, Medicine and Science in Sports and Exercise, 30, 11, pp. 1572-1577, (1998); Witvrouw E., Lysens R., Bellemans J., Cambier D., Vanderstraeten G., Intrinsic risk factors for the development of anterior knee pain in an athletic population: A two-year prospective study, American Journal of Sports Medicine, 28, 4, pp. 480-489, (2000); Fulkerson J.P., Diagnosis and treatment of patients with patellofemoral pain, American Journal of Sports Medicine, 30, 3, pp. 447-456, (2002); Fulkerson J.P., Arendt E.A., Anterior knee pain in females, Clinical Orthopaedics and Related Research, 372, pp. 69-73, (2000); Robinson R.L., Nee R.J., Analysis of hip strength in females seeking physical therapy treatment for unilateral patellofemoral pain syndrome, J Orthop Sports Phys Ther, 37, pp. 232-238, (2007); Fredericson M., Yoon K., Physical examination and patellofemoral pain syndrome, Am J Phys Med Rehabil, 85, pp. 234-243, (2006); Wilson T., The measurement of patellar alignment in patellofemoral pain syndrome: Are we confusing assumptions with evidence?, J Orthop Sports Phys Ther, 37, pp. 330-341, (2007); Kannus P., Niittymaki S., Which factors predict outcome in the nonoperative treatment of patellofemoral pain syndrome? A prospective follow-up study, Medicine and Science in Sports and Exercise, 26, 3, pp. 289-296, (1994); Loudon J.K., Wiesner D., Goist-Foley H.L., Et al., Intrarater reliability of functional performance tests for subjects with patellofemoral pain syndrome, J Athl Train, 37, pp. 256-261, (2002); Piva S.R., Fitzgerald K., Irrgang J.J., Et al., Reliability of measures of impairments associated with patellofemoral pain syndrome, BMC Musculoskelet Disord, 7, (2006); Duffey M.J., Martin D.F., Cannon D.W., Et al., Etiologic factors associated with anterior knee pain in distance runners, Med Sci Sports Exerc, 32, pp. 1825-1832, (2000); Messier S.P., Davis S.E., Curl W.W., Et al., Etiologic factors associated with patellofemoral pain in runners, Med Sci Sports Exerc, 23, pp. 1008-1015, (1991); Powers C.M., The Influence of Altered Lower-Extremity Kinematics on Patellofemoral Joint Dysfunction: A Theoretical Perspective, Journal of Orthopaedic and Sports Physical Therapy, 33, 11, pp. 639-646, (2003); 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Stefanyshyn D.J., Stergiou P., Lun V.M.Y., Meeuwisse W.H., Worobets J.T., Knee angular impulse as a predictor of patellofemoral pain in runners, American Journal of Sports Medicine, 34, 11, pp. 1844-1851, (2006); Wikstrom E.A., Tillman M.D., Kline K.J., Borsa P.A., Gender and limb differences in dynamic postural stability during landing, Clinical Journal of Sport Medicine, 16, 4, pp. 311-315, (2006); Ford K.R., Myer G.D., Smith R.L., Vianello R.M., Seiwert S.L., Hewett T.E., A comparison of dynamic coronal plane excursion between matched male and female athletes when performing single leg landings, Clinical Biomechanics, 21, 1, pp. 33-40, (2006); Hewett T.E., Ford K.R., Myer G.D., Wanstrath K., Scheper M., Gender differences in hip adduction motion and torque during a single-leg agility maneuver, Journal of Orthopaedic Research, 24, 3, pp. 416-421, (2006); Swartz E.E., Decoster L.C., Russell P.J., Croce R.V., Effects of developmental stage and sex on lower extremity kinematics and vertical ground reaction forces during landing, Journal of Athletic Training, 40, 1, pp. 9-14, (2005); Wikstrom E.A., Tillman M.D., Smith A.N., Borsa P.A., A new force-plate technology measure of dynamic postural stability: The dynamic postural stability index, Journal of Athletic Training, 40, 4, pp. 305-309, (2005); Kernozek T.W., Torry M.R., Van Hoof H., Cowley H., Tanner S., Gender differences in frontal and sagittal plane biomechanics during drop landings, Medicine and Science in Sports and Exercise, 37, 6, pp. 1003-1012, (2005); Salci Y., Kentel B.B., Heycan C., Akin S., Korkusuz F., Comparison of landing maneuvers between male and female college volleyball players, Clinical Biomechanics, 19, 6, pp. 622-628, (2004); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Medicine and Science in Sports and Exercise, 35, 10, pp. 1745-1750, (2003); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Medicine and Science in Sports and Exercise, 37, 1, pp. 124-129, (2005); Hewett T.E., Myer G.D., Ford K.R., Heidt Jr. R.S., Colosimo A.J., McLean S.G., Van Den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, American Journal of Sports Medicine, 33, 4, pp. 492-501, (2005); Zhang S.N., Bates B.T., Dufek J.S., Contributions of lower extremity joints to energy dissipation during landings, Med Sci Sports Exerc, pp. 812-819, (1998); Quatman C.E., Ford K.R., Myer G.D., Hewett T.E., Maturation leads to gender differences in landing force and vertical jump performance: A longitudinal study, American Journal of Sports Medicine, 34, 5, pp. 806-813, (2006); Norkin C.C., Levangie P.K., Joint Structure and Function: A Comprehensive Analysis, (1998); Dye S.F., Vaupel G.L., The pathophysiology of patellofemoral pain, Sports Med Arthrosc Rev, 2, pp. 203-210, (1994); Decker M.J., Torry M.R., Wyland D.J., Sterett W.I., Steadman J.R., Gender differences in lower extremity kinematics, kinetics and energy absorption during landing, Clinical Biomechanics, 18, 7, pp. 662-669, (2003); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, Journal of Bone and Joint Surgery - Series A, 86, 8, pp. 1601-1608, (2004); Hewett T.E., Myer G.D., Ford K.R., Slauterbeck J.R., Preparticipation physical examination using a box drop vertical jump test in young athletes: The effects of puberty and sex, Clinical Journal of Sport Medicine, 16, 4, pp. 298-304, (2006); Pittenger V.M., McCaw S.T., Thomas D.Q., Vertical ground reaction forces of children during one- and two-leg rope jumping, Res Q Exerc Sport, 73, pp. 445-449, (2002); Zheng N., Barrentine S.W., Biomechanics and motion analysis applied to sports, Physical Medicine and Rehabilitation Clinics of North America, 11, 2, pp. 309-322, (2000)","T. E. Hewett; Division of Occupational and Physical Therapy, Sports Medicine Biodynamics Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229-3039, 3333 Burnet Avenue, MLC 10001, United States; email: tim.hewett@cchmc.org","","","14730480","","BJSMD","19858114","English","Br. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-79951916934" "Kuo C.; Wu L.C.; Ye P.P.; Laksari K.; Camarillo D.B.; Kuhl E.","Kuo, Calvin (7404480701); Wu, Lyndia C. (56050329900); Ye, Patrick P. (57188824296); Laksari, Kaveh (34877202000); Camarillo, David B. (6506423628); Kuhl, Ellen (7004398913)","7404480701; 56050329900; 57188824296; 34877202000; 6506423628; 7004398913","Pilot Findings of Brain Displacements and Deformations during Roller Coaster Rides","2017","Journal of Neurotrauma","34","22","","3198","3205","7","15","10.1089/neu.2016.4893","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85033394359&doi=10.1089%2fneu.2016.4893&partnerID=40&md5=362f655e43a3bf06c927c659355d98ff","Department of Mechanical Engineering, Stanford University, 443 Via Ortega, Stanford, 94305, CA, United States; Department of Bioengineering, Stanford University, Stanford, CA, United States","Kuo C., Department of Mechanical Engineering, Stanford University, 443 Via Ortega, Stanford, 94305, CA, United States; Wu L.C., Department of Bioengineering, Stanford University, Stanford, CA, United States; Ye P.P., Department of Bioengineering, Stanford University, Stanford, CA, United States; Laksari K., Department of Bioengineering, Stanford University, Stanford, CA, United States; Camarillo D.B., Department of Mechanical Engineering, Stanford University, 443 Via Ortega, Stanford, 94305, CA, United States, Department of Bioengineering, Stanford University, Stanford, CA, United States; Kuhl E., Department of Mechanical Engineering, Stanford University, 443 Via Ortega, Stanford, 94305, CA, United States, Department of Bioengineering, Stanford University, Stanford, CA, United States","With 300,000,000 riders annually, roller coasters are a popular recreational activity. Although the number of roller coaster injuries is relatively low, the precise effect of roller coaster rides on our brains remains unknown. Here we present the quantitative characterization of brain displacements and deformations during roller coaster rides. For two healthy adult male subjects, we recorded head accelerations during three representative rides, and, for comparison, during running and soccer headers. From the recordings, we simulated brain displacements and deformations using rigid body dynamics and finite element analyses. Our findings show that despite having lower linear accelerations than sports head impacts, roller coasters may lead to brain displacements and strains comparable to mild soccer headers. The peak change in angular velocity on the rides was 9.9 rad/sec, which was higher than the 5.6 rad/sec in soccer headers with ball velocities reaching 7 m/sec. Maximum brain surface displacements of 4.0 mm and maximum principal strains of 7.6% were higher than in running and similar to soccer headers, but below the reported average concussion strain. Brain strain rates during roller coaster rides were similar to those in running, and lower than those in soccer headers. Strikingly, on the same ride and at a similar position, the two subjects experienced significantly different head kinematics and brain deformation. These results indicate that head motion and brain deformation during roller coaster rides are highly sensitive to individual subjects. Although our study suggests that roller coaster rides do not present an immediate risk of acute brain injury, their long-term effects require further longitudinal study. © Copyright 2017, Mary Ann Liebert, Inc.","brain modeling; head kinematics; traumatic brain injury; wearable sensors","Acceleration; Adult; Biomechanical Phenomena; Brain Injuries; Healthy Volunteers; Humans; Male; Models, Neurological; Pilot Projects; Running; Soccer; acceleration; adult; Article; brain cortex; brain deformation; brain displacement; controlled study; experience; head movement; human; human experiment; kinematics; male; nervous system parameters; normal human; pilot study; recreation; roller coaster ride; running; simulation; soccer; surface area; biological model; biomechanics; brain injury; pathophysiology; physiology","Braksiek R.J., Roberts D.J., Amusement park injuries and deaths, Ann. Emerg. 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Biomech., 49, pp. 1845-1853, (2016); Vasavada A.N., Danaraj J., Siegmund G.P., Head and neck anthropometry, vertebral geometry and neck strength in heightmatched men and women, J. Biomech., 41, pp. 114-121, (2008); Wu Laksari L.C.K., Kuo C., Luck J.F., Kleiven S., Dale Bass C.R., Camarillo D.B., Bandwidth and sample rate requirements for wearable head impact sensors, J. Biomech., 49, pp. 2918-2924, (2016); Cui F.N., Musigazi Z.Y., Ivens J.G.U., Depreitere B., Verbeken E., Vander Sloten J., Structural and mechanical characterisation of bridging veins: A review, J. Mech. Behav. Biomed. Mater., 41, pp. 222-240, (2015); Naunheim R.S., Bayly P.V., Standeven J., Neubauer J.S., Lewis L.M., Genin G.M., Linear and angular head accelerations during heading of a soccer ball, Med. Sci. Sports Exerc., 35, pp. 1406-1412, (2003); Camarillo D.B., Shull P.B., Mattson J., Shultz R., Garza D., An instrumented mouthguard for measuring linear and angular head impact kinematics in American football, Ann. 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Focus, 33, (2012); Nauman T.Tm., Breedlove E.A., Yoruk U.E.L., Dye A.E., Morigaki K.E., Feuer H., Leverenz L.J., Functionallydetected cognitive impairment in high school football players without clinically-diagnosed concussion, J. Neurotrauma, 31, pp. 327-338, (2010); Tang-Schomer M.D., Patel A.R., Baas P.W., Smith D.H., Mechanical breaking of microtubules in axons during dynamic stretch injury underlies delayed elasticity, microtubule disassembly, and axon degeneration, FASEB J., 24, pp. 1401-1410, (2010); Ahmadzadeh H., Smith D.H., Shenoy V.B., Viscoelasticity of tau proteins leads to strain rate-dependent breaking of microtubules during axonal stretch injury: Predictions from a mathematical model, Biophys. J., 106, pp. 1123-1133, (2014); Van Den Bedem H., Kuhl E., Tau-ism: The yin and yang of microtubule sliding, detachment, and rupture, Biophys. J., 109, pp. 2215-2217, (2015); Zhao W., Ford J.C., Flashman L.A., McAllister T.W., Ji S., White matter injury susceptibility via fiber strain evaluation using whole-brain tractography, J. Neurotrauma, 33, pp. 1834-1847, (2016); Ji S., Ghadyani H., Bolander R.P., Beckwith J.G., Ford J.C., McAllister T.W., Flashman L.A., Paulsen K.D., Ernstrom K., Jain S., Raman R., Zhang L., Greenwald R.M., Parametric comparisons of intracranial mechanical responses from three validated finite element models of the human head, Ann. Biomed. Eng., 42, pp. 11-24, (2014); Cloots R.J.H., Van Dommelen J.A.W., Kleiven S., Geers M.G.D., Multi-scale mechanics of traumatic brain injury: Predicting axonal strains from head loads, Biomech. Model. Mechanobiol., 12, pp. 137-150, (2013); Giordano C., Cloots R.J.H., Van Dommelen J.A.W., Kleiven S., The influence of anisotropy on brain injury prediction, J. Biomech., 47, pp. 1052-1059, (2014); Ho J., Kleiven S., Can sulci protect the brain from traumatic injury?, J Biomech., 42, pp. 2074-2080, (2009)","C. Kuo; Department of Mechanical Engineering, Stanford University, Stanford, 443 Via Ortega, 94305, United States; email: calvink@stanford.edu","","Mary Ann Liebert Inc.","08977151","","JNEUE","28683585","English","J. Neurotrauma","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85033394359" "Wilmes E.; De Ruiter C.J.; Bastiaansen B.J.C.; Goedhart E.A.; Brink M.S.; Van Der Helm F.C.T.; Savelsbergh G.J.P.","Wilmes, Erik (57216648924); De Ruiter, Cornelis J. (7006550668); Bastiaansen, Bram J. C. (57216645857); Goedhart, Edwin A. (55311915500); Brink, Michel S. (24469949200); Van Der Helm, Frans C. T. (7003729104); Savelsbergh, Geert J. P. (56250040000)","57216648924; 7006550668; 57216645857; 55311915500; 24469949200; 7003729104; 56250040000","Associations between Hamstring Fatigue and Sprint Kinematics during a Simulated Football (Soccer) Match","2021","Medicine and Science in Sports and Exercise","53","12","","2586","2595","9","15","10.1249/MSS.0000000000002753","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121841512&doi=10.1249%2fMSS.0000000000002753&partnerID=40&md5=f6070d7e6b303488b11a391dfcaa6fc3","Amsterdam Movement Sciences, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands; Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, Groningen, Netherlands; FIFA Medical Centre of Excellence, Royal Netherlands Football Association, Zeist, Netherlands; Department of Biomechanical Engineering, Delft University of Technology, Delft, Netherlands","Wilmes E., Amsterdam Movement Sciences, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands; De Ruiter C.J., Amsterdam Movement Sciences, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands; Bastiaansen B.J.C., Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, Groningen, Netherlands; Goedhart E.A., FIFA Medical Centre of Excellence, Royal Netherlands Football Association, Zeist, Netherlands; Brink M.S., Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, Groningen, Netherlands; Van Der Helm F.C.T., Department of Biomechanical Engineering, Delft University of Technology, Delft, Netherlands; Savelsbergh G.J.P., Amsterdam Movement Sciences, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands","Purpose Neuromuscular fatigue is considered to be important in the etiology of hamstring strain injuries in football. Fatigue is assumed to lead to decreases in hamstring contractile strength and changes in sprinting kinematics, which would increase hamstring strain injury risk. Therefore, the aim was to examine the effects of football-specific fatigue on hamstring maximal voluntary torque (MVT) and rate of torque development (RTD), in relation to alterations in sprinting kinematics. Methods Ten amateur football players executed a 90-min running-based football match simulation. Before and after every 15 min of simulated play, MVT and RTD of the hamstrings were obtained in addition to the performance and lower body kinematics during a 20-m maximal sprint. Linear mixed models and repeated measurement correlations were used to assess changes over time and common within participant associations between hamstring contractile properties and peak knee extension during the final part of the swing phase, peak hip flexion, peak combined knee extension and hip flexion, and peak joint angular velocities, respectively. Results Hamstring MVT and sprint performance were significantly reduced by 7.5% and 14.3% at the end of the football match simulation. Unexpectedly, there were no indications for reductions in RTD when MVT decrease was considered. Decreases in hamstring MVT were significantly correlated to decreases in peak knee angle (R = 0.342) and to increases in the peak combined angle (R = -0.251). Conclusions During a football match simulation, maximal voluntary isometric hamstring torque declines. This decline is related to greater peak knee extension and peak combined angle during sprint running, which indicates a reduced capacity of the hamstrings to decelerate the lower leg during sprint running with fatigue. Copyright © 2021 The Author(s).","Fatigue; Hamstring Strain Injury; Inertial Measurement Units; Lower Body Kinematics; Rate Of Torque Development; Sprinting","Adolescent; Adult; Biomechanical Phenomena; Hamstring Muscles; Humans; Male; Muscle Fatigue; Running; Soccer; Torque; Young Adult; adolescent; adult; biomechanics; hamstring muscle; human; injury; male; muscle fatigue; physiology; running; soccer; torque; young adult","Ekstrand J., Hagglund M., Walden M., Epidemiology of muscle injuries in professional football (soccer), Am J Sports Med., 39, 6, pp. 1226-1232, (2011); Woods C., Hawkins R., Hulse M., Hodson A., The Football Association Medical Research Programme: an audit of injuries in professional football-analysis of preseason injuries, Br J Sports Med., 36, 6, pp. 436-441, (2002); Spencer M., Bishop D., Dawson B., Goodman C., Physiological and metabolic responses of repeated-sprint activities, Sports Med., 35, 12, pp. 1025-1044, (2005); Marshall P.W., Lovell R., Jeppesen G.K., Andersen K., Siegler J.C., Hamstring muscle fatigue and central motor output during a simulated soccer match, PLoS One, 9, 7, (2014); Rampinini E., Bosio A., Ferraresi I., Petruolo A., Morelli A., Sassi A., Match-related fatigue in soccer players, Med Sci Sports Exerc., 43, 11, pp. 2161-2170, (2011); Small K., McNaughton L., Greig M., Lovell R., The effects of multidirectional soccer-specific fatigue on markers of hamstring injury risk, J Sci Med Sport, 13, 1, pp. 120-125, (2010); Small K., McNaughton L., Greig M., Lohkamp M., Lovell R., Soccer fatigue, sprinting and hamstring injury risk, Int J Sports Med., 30, 8, pp. 573-578, (2009); Chumanov E.S., Heiderscheit B.C., Thelen D.G., The effect of speed and influence of individual muscles on hamstring mechanics during the swing phase of sprinting, J Biomech., 40, 16, pp. 3555-3562, (2007); Chumanov E.S., Schache A.G., Heiderscheit B.C., Thelen D.G., Hamstrings are most susceptible to injury during the late swing phase of sprinting, Br J Sports Med., 46, 2, (2012); Heiderscheit B.C., Hoerth D.M., Chumanov E.S., Swanson S.C., Thelen B.J., Thelen D.G., Identifying the time of occurrence of a hamstring strain injury during treadmill running: a case study, Clin Biomech (Bristol, Avon), 20, 10, pp. 1072-1078, (2005); Wilmes E., De Ruiter C.J., Bastiaansen B.J., Et al., Inertial sensor-based motion tracking in football with movement intensity quantification, Sensors (Basel), 20, 9, (2020); Stevens T.G., De Ruiter C.J., Twisk J.W., Savelsbergh G.J., Beek P.J., Quantification of in-season training load relative tomatch load in professional Dutch Eredivisie football players, Sci Med Football., 1, 2, pp. 117-125, (2017); Vanrenterghem J., Nedergaard N.J., Robinson M.A., Drust B., Training Load monitoring in team sports: a novel framework separating physiological and biomechanical load-adaptation pathways, Sports Med., 47, 11, pp. 2135-2142, (2017); Lovell R., Midgley A., Barrett S., Carter D., Small K., Effects of different half-time strategies on second half soccer-specific speed, power and dynamic strength, Scand J Med Sci Sports, 23, 1, pp. 105-113, (2011); Barrettl S., Guardl A., Lovelll R., Elite-youth and university-level versions of SAFT90 simulate the internal and external loads of competitive soccer match-play, Science and Football VII: The Proceedings of the Seventh World Congress on Science and Football, (2013); De Ruiter C.J., Van Dieen J.H., Stride and step length obtained with inertial measurement units during maximal sprint acceleration, Sports (Basel), 7, 9, (2019); De Ruiter C.J., Van Leeuwen D., Heijblom A., Bobbert M.F., De Haan A., Fast unilateral isometric knee extension torque development and bilateral jump height, Med Sci Sports Exerc., 38, 10, pp. 1843-1852, (2006); Hermens H.J., Freriks B., Merletti R., Et al., European recommendations for surface electromyography, Roessingh Res Dev., 8, 2, pp. 13-54, (1999); Allison G., Trunk muscle onset detection technique for EMG signals with ECG artefact, J Electromyogr Kinesiol., 13, 3, pp. 209-216, (2003); De Ruiter C.J., De Korte A., Schreven S., De Haan A., Leg dominancy in relation to fast isometric torque production and squat jump height, Eur J Appl Physiol., 108, 2, pp. 247-255, (2010); Maffiuletti N.A., Aagaard P., Blazevich A.J., Folland J., Tillin N., Duchateau J., Rate of force development: physiological and methodological considerations, Eur J Appl Physiol., 116, 6, pp. 1091-1116, (2016); De Ruiter C.J., Vermeulen G., Toussaint H.M., De Haan A., Isometric knee-extensor torque development and jump height in volleyball players, Med Sci Sports Exerc., 39, 8, pp. 1336-1346, (2007); Pinheiro J., Bates D., Deb Roy S., Sarkar D., Team RC nlme: linear and nonlinear mixed effects models 2021;R package version 3.1-152; R: A Language and Environment for Statistical Computing, (2021); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (2013); Bakdash J.Z., Marusich L.R., Repeated measures correlation, Front Psychol., 8, (2017); Faul F., Erdfelder E., Buchner A., Lang A.-G., Statistical power analyses using G∗Power 3.1: tests for correlation and regression analyses, Behav Res Methods, 41, 4, pp. 1149-1160, (2009); Pinniger G., Steele J.R., Groeller H., Does fatigue induced by repeated dynamic efforts affect hamstring muscle function?, Med Sci Sports Exerc., 32, 3, pp. 647-653, (2000); Robineau J., Jouaux T., Lacroix M., Babault N., Neuromuscular fatigue induced by a 90-minute soccer game modeling, J Strength Cond Res., 26, 2, pp. 555-562, (2012); Greco C.C., Da Silva W.L., Camarda S.R., Denadai B.S., Fatigue and rapid hamstring/quadriceps force capacity in professional soccer players, Clin Physiol Funct Imaging, 33, 1, pp. 18-23, (2013); Rimmer E.E., Verheul J., Lake M., Effect of fatigue from repeated sprints on hamstring muscle activation patterns during running, ISBS Proceedings Archive, 38, 1, (2020); Ekstrand J., Healy J.C., Walden M., Lee J.C., English B., Hagglund M., Hamstring muscle injuries in professional football: the correlation of MRI findings with return to play, Br J Sports Med., 46, 2, pp. 112-117, (2012); Thorlund J.B., Aagaard P., Madsen K., Rapid muscle force capacity changes after soccer match play, Int J Sports Med., 30, 4, pp. 273-278, (2009); Grazioli R., Lopez P., Andersen L.L., Et al., Hamstring rate of torque development is more affected than maximal voluntary contraction after a professional soccer match, Eur J Sport Sci., 19, 10, pp. 1336-1341, (2019); Sahaly R., Vandewalle H., Driss T., Monod H., Maximal voluntary force and rate of force development in humans-importance of instruction, Eur J Appl Physiol., 85, 3-4, pp. 345-350, (2001); Andersson H.M., Raastad T., Nilsson J., Paulsen G., Garthe I., Kadi F., Neuromuscular fatigue and recovery in elite female soccer: effects of active recovery, Med Sci Sports Exerc., 40, 2, pp. 372-380, (2008)","","","Lippincott Williams and Wilkins","01959131","","MSCSB","34265817","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85121841512" "Nunns M.P.I.; Dixon S.J.; Clarke J.; Carré M.","Nunns, Michael P I (44061633200); Dixon, Sharon J (57203056377); Clarke, James (7403197924); Carré, Matt (7004446524)","44061633200; 57203056377; 7403197924; 7004446524","Boot-insole effects on comfort and plantar loading at the heel and fifth metatarsal during running and turning in soccer","2016","Journal of Sports Sciences","34","8","","730","737","7","12","10.1080/02640414.2015.1069378","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955631562&doi=10.1080%2f02640414.2015.1069378&partnerID=40&md5=200af72d5f90dd7c667387f3d0e0c2d2","Biomechanics Research Team, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom; Sports Engineering Research Group, University of Sheffield, Sheffield, United Kingdom","Nunns M.P.I., Biomechanics Research Team, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom; Dixon S.J., Biomechanics Research Team, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom; Clarke J., Sports Engineering Research Group, University of Sheffield, Sheffield, United Kingdom; Carré M., Sports Engineering Research Group, University of Sheffield, Sheffield, United Kingdom","Plantar loading may influence comfort, performance and injury risk in soccer boots. This study investigated the effect of cleat configuration and insole cushioning levels on perception of comfort and in-shoe plantar pressures at the heel and fifth metatarsal head region. Nine soccer academy players (age 15.7 ± 1.6 years; height 1.80 ± 0.40 m; body mass 71.9 ± 6.1 kg) took part in the study. Two boot models (8 and 6 cleats) and two insoles (Poron and Poron/gel) provided four footwear combinations assessed using pressure insoles during running and 180° turning. Mechanical and comfort perception tests differentiated boot and insole conditions. During biomechanical testing, the Poron insole generally provided lower peak pressures than the Poron/gel insole, particularly during the braking step of the turn. The boot model did not independently influence peak pressures at the fifth metatarsal, and had minimal influence on heel loads. Specific boot-insole combinations performed differently (P < 0.05). The 8-cleat boot and the Poron insole performed best biomechanically and perceptually, but the combined condition did not. Inclusion of kinematic data and improved control of the turning technique are recommended to strengthen future research. The mechanical, perception and biomechanical results highlight the need for a multi-faceted approach in the assessment of footwear. © 2015 Taylor & Francis.","boots; Insoles; perception; plantar pressure","Adolescent; Biomechanical Phenomena; Equipment Design; Heel; Humans; Metatarsal Bones; Motor Skills; Perception; Pressure; Running; Shoes; Soccer; adolescent; biomechanics; equipment design; heel; human; metatarsal bone; motor performance; perception; physiology; pressure; running; shoe; soccer","Brizuela G., Ferrandis R., Alcantara E., Martinez A., Forner A., Biomechanical design of football boots: Effect of studs on performance and injury prevention, H. J. Riehle & M. M. Vieten (Eds.), ISBS-Conference Proceedings Archive, 1, 1, (1998); Bus S.A., Ulbrecht J.S., Cavanagh P.R., Pressure relief and load redistribution by custom-made insoles in diabetic patients with neuropathy and foot deformity, Clinical Biomechanics, 19, 6, pp. 629-638, (2004); Che H., Nigg B.M., De Koning J., Relationship between plantar pressure distribution under the foot and insole comfort, Clinical Biomechanics, 9, 6, pp. 335-341, (1994); Chomiak J., Junge A., Peterson L., Dvorak J., Severe injuries in football players influencing factors, The American Journal of Sports Medicine, 28, (2000); Clarke J., Understanding the performance and comfort of soccer boots, Unpublished PhD Thesis, (2011); Clarke J.D., Carre M.J., Improving the performance of soccer boots on artificial and natural soccer surfaces, Procedia Engineering, 2, 2, pp. 2775-2781, (2010); Coyles V.R., Lake M.J., Forefoot plantar pressure distribution inside the soccer boot during running, Proceedings of the 4th Symposium on Footwear Biomechanics, pp. 30-31, (1999); Curryer M., Lemaire E.D., Effectiveness of various materials in reducing plantar shear forces. A pilot study, Journal of the American Podiatric Medical Association, 90, 7, pp. 346-353, (2000); Dixon S.J., Use of pressure insoles to compare in-shoe loading for modern running shoes, Ergonomics, 51, 10, pp. 1503-1514, (2008); Eils E., Streyl M., Linnenbecker S., Thorwesten L., Volker K., Rosenbaum D., Characteristic plantar pressure distribution patterns during soccer-specific movements, The American Journal of Sports Medicine, 32, 1, pp. 140-145, (2004); Ford K.R., Manson N.A., Evans B.J., Myer G.D., Gwin R.C., Heidt R.S., Hewett T.E., Comparison of in-shoe foot loading patterns on natural grass and synthetic turf, Journal of Science and Medicine in Sport, 9, 6, pp. 433-440, (2006); Gardner L.I., Dziados J.E., Jones B.H., Brundage J.F., Harris J.M., Sullivan R., Gill P., Prevention of lower extremity stress fractures: A controlled trial of a shock absorbent insole, American Journal of Public Health, 78, 12, pp. 1563-1567, (1988); Goske S., Erdemir A., Petre M., Budhabhatti S., Cavanagh P.R., Reduction of plantar heel pressures: Insole design using finite element analysis, Journal of Biomechanics, 39, 13, pp. 2363-2370, (2006); Hennig E.M., Sterzing T., The influence of soccer shoe design on playing performance: A series of biomechanical studies, Footwear Science, 2, 1, pp. 3-11, (2010); Hinz P., Henningsen A., Matthes G., Jager B., Ekkernkamp A., Rosenbaum D., Analysis of pressure distribution below the metatarsals with different insoles in combat boots of the German Army for prevention of march fractures, Gait & Posture, 27, 3, pp. 535-538, (2008); Jacquot X., Kruppa T., Poulhes J., Jaeger J., Fractures de fatigue de la base du 5e métatarsien chez le footballeur, Journal De Traumatologie Du Sport, 22, pp. 186-190, (2005); Jordan C., Bartlett R., Pressure distribution and perceived comfort in casual footwear, Gait & Posture, 3, 4, pp. 215-220, (1995); Jordan C., Payton C., Bartlett R., Perceived comfort and pressure distribution in casual footwear, Clinical Biomechanics (Bristol, Avon), 12, 3, (1997); Knapp T.P., Mandelbaum B.R., Garrett W.E., Why are stress injuries so common in the soccer player?, Clinics in Sports Medicine, 17, 4, pp. 835-853, (1998); Lake M.J., Determining the protective function of sports footwear, Ergonomics, 43, 10, pp. 1610-1621, (2000); Muller C., Sterzing T., Lake M., Milani T.L., Different stud configurations cause movement adaptations during a soccer turning movement, Footwear Science, 2, 1, pp. 21-28, (2010); Nigg B.M., Yeadon M.R., Biomechanical aspects of playing surfaces, Journal of Sports Sciences, 5, 2, pp. 117-145, (1987); Oleson M., Adler D., Goldsmith P., A comparison of forefoot stiffness in running and running shoe bending stiffness, Journal of Biomechanics, 38, 9, pp. 1886-1894, (2005); Osgood C.E., Suci G., Tannenbaum P., The measurement of meaning, (1957); Paavola M., Kannus P., Jarvinen T.A., Khan K., Jozsa L., Jarvinen M., Achilles tendinopathy, The Journal of Bone & Joint Surgery, 84, 11, pp. 2062-2076, (2002); Queen R.M., Charnock B.L., Garrett W.E., Hardaker W.M., Sims E.L., Moorman C.T., A comparison of cleat types during two football-specific tasks on FieldTurf, British Journal of Sports Medicine, 42, 4, pp. 278-284, (2008); Santos D., Carline T., Flynn L., Pitman D., Feeney D., Patterson C., Westland E., Distribution of in-shoe dynamic plantar foot pressures in professional football players, The Foot, 11, 1, pp. 10-14, (2001); Schwellnus M.P., Jordaan G., Noakes T.D., Prevention of common overuse injuries by the use of shock absorbing insoles: A prospective study, The American Journal of Sports Medicine, 18, 6, pp. 636-641, (1990); Shuen W.M.V., Boulton C., Batt M.E., Moran C., Metatarsal fractures and sports, The Surgeon, 7, 2, pp. 86-88, (2009); Smith N., Dyson R., Janaway L., Ground reaction force measures when running in soccer boots and soccer training shoes on a natural turf surface, Sports Engineering, 7, 3, pp. 159-167, (2004); Stiles V., Dixon S., Biomechanical response to systematic changes in impact interface cushioning properties while performing a tennis-specific movement, Journal of Sports Sciences, 25, 11, pp. 1229-1239, (2007); Stiles V.H., Dixon S.J., The influence of different playing surfaces on the biomechanics of a tennis running forehand foot plant, Journal of Applied Biomechanics, 22, 1, (2006); Wiegerinck J.I., Boyd J., Yoder J.C., Abbey A.N., Nunley J.A., Queen R.M., Differences in plantar loading between training shoes and racing flats at a self-selected running speed, Gait & Posture, 29, 3, pp. 514-519, (2009); Windle C., Gregory S., Dixon S., The shock attenuation characteristics of four different insoles when worn in a military boot during running and marching, Gait & Posture, 9, 1, pp. 31-37, (1999); Witana C.P., Goonetilleke R.S., Xiong S., Au E.Y.L., Effects of surface characteristics on the plantar shape of feet and subjects’ perceived sensations, Applied Ergonomics, 40, 2, pp. 267-279, (2009); Wong P.-L., Chamari K., Mao D.W., Wisloff U., Hong Y., Higher plantar pressure on the medial side in four soccer-related movements, British Journal of Sports Medicine, 41, 2, pp. 93-100, (2007)","M.P.I. Nunns; Biomechanics Research Team, College of Life and Environmental Sciences, University of Exeter, Exeter, EX1 2LU, United Kingdom; email: mn227@exeter.ac.uk","","Routledge","02640414","","JSSCE","26197986","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84955631562" "Gauffin H.; Areblad M.; Tropp H.","Gauffin, H. (6602866743); Areblad, M. (6507846002); Tropp, H. (7003970728)","6602866743; 6507846002; 7003970728","Three-dimensional analysis of the talocrural and subtalar joints in single-limb stance","1993","Clinical Biomechanics","8","6","","307","314","7","12","10.1016/0268-0033(93)90005-3","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0027703648&doi=10.1016%2f0268-0033%2893%2990005-3&partnerID=40&md5=b96c3d19713b41e80e626a971123ec1a","Department of Orthopaedic Surgery, University Hospital, Sweden; Division of Machine Design, Department of Mechanical Engineering, Linköping Institute of Technology, Linköping, Sweden","Gauffin H., Department of Orthopaedic Surgery, University Hospital, Sweden; Areblad M., Division of Machine Design, Department of Mechanical Engineering, Linköping Institute of Technology, Linköping, Sweden; Tropp H., Department of Orthopaedic Surgery, University Hospital, Sweden","A quasi-static three-dimensional model of the rear foot was developed to enable calculation of joint motion and net torque with respect to talocrural and subtalar joint axes. The functional behaviour of these joints was analysed during single-limb stance. Six female soccer players with unilateral functional instability of the ankle joint were examined. Recordings were performed both with eyes open and eyes closed. The rear-foot model was implemented into an optoelectronic motion analysis system together with a force plate. The subtalar torque precedes the angular movement by 0.1-0.2 s, indicating active postural corrections. Up to a certain limit of subtalar joint inversion, the external everting torque increases. If the inversion is further increased an external inverting torque is obtained. With eyes closed the amplitudes increased for joint motions, torques, centre of pressure trajectories, shear forces, and vertical forces. All events found with external inverting torques occurred when standing on the injured foot with the eyes closed. © 1993.","Ankle; motion analysis; postural control; three-dimensional model","Angle measurement; Biomechanics; Functional assessment; Kinematics; Loads (forces); Mathematical models; Motion control; Physiological models; Position control; Subjective testing; Three dimensional; Torque measurement; adult; ankle; article; athlete; body posture; clinical article; female; foot; human; joint function; model; standing; subtalar joint; torque; Ankle joints; Optoelectronic motion analysis; Postural control; Single limb stance; Talocrural and subtalar joints; Unilateral functional instability; Joints (anatomy)","Nashner, McCollum, The organization of human postural movements A formal basis and experimental synthesis, Behavioral and Brain Sciences, 8, pp. 135-172, (1985); Horak, Nashner, Central programming of postural movements Adaptation to altered support-surface configurations, J Neurophysiol, 55, pp. 1369-1381, (1986); Horak, Clinical measurement of postural control in adults, Phys Ther, 67, pp. 1881-1885, (1987); Gauffin, Tropp, Odenrick, Effect of ankle disk training on postural control in patients; with functional instability of the ankle joint, IntJSports Med, 9, pp. 141-144, (1988); Tropp, Odenrick, Gillquist, Stabilometry recordings in functional and mechanical instability of the ankle joint, IntJSports Med, 6, pp. 180-182, (1985); Tropp, Odenrick, Postural control in single-limb stance, Journal of Orthopaedic Research, 6, pp. 833-839, (1988); Tropp, Ekstrand, Gillquist, Stabilometry in functional instability of the ankle and its value in predicting injury, Medicine & Science in Sports & Exercise, 16, pp. 64-66, (1984); Friden, Zatterstrom, Lindstrand, Moritz, A stabilometric technique for evaluation of lower limb instabilities, The American Journal of Sports Medicine, 17, pp. 118-122, (1989); Nigg, Biomechanics of Running Shoes, (1980); Nigg, Morlock, The influence of lateral heel flare of running shoes on pronation and impact forces, Med Sci Sports Exerc, 3, pp. 294-302, (1987); Gauffin, Jarenmark, Tropp, Implementation of a two-dimensional biomechanical model in an opto-electronic motion analysis system, Clinical Biomechanics, 5, pp. 108-116, (1990); Benink, The constraint-mechanism of the human tarsus, Acta Orthop Scand Suppl, 215, (1985); Lundberg, Patterns of motion of the ankle/foot complex, Thesis, (1988); Nigg, The assessment of loads acting on the locomotor system in running and other sport activities, Semin Orthop, 3, pp. 197-206, (1988); Inman, The Joints of the Ankle, (1976); Odenrick, On analysis and clinical measurement of gait and upright stance, Thesis, (1985); Areblad, On modelling of the human rear foot, Thesis No. 238, (1990); Hayes, Biomechanics of postural control, Exercise and Sport Sciences Reviews, 10, pp. 363-391, (1982); Tropp, Functional instability of the ankle joint, Thesis No. 202, (1985); Rasmussen, Stability of the ankle joint, Acta Orthop Scand Suppl, 211, (1985)","","","","02680033","","CLBIE","","English","Clin. Biomech.","Article","Final","","Scopus","2-s2.0-0027703648" "Hughes T.; Jones R.K.; Starbuck C.; Sergeant J.C.; Callaghan M.J.","Hughes, Tom (35191732800); Jones, Richard K. (8972539000); Starbuck, Chelsea (41762953000); Sergeant, Jamie C. (38562164200); Callaghan, Michael J. (7006208379)","35191732800; 8972539000; 41762953000; 38562164200; 7006208379","The value of tibial mounted inertial measurement units to quantify running kinetics in elite football (soccer) players. A reliability and agreement study using a research orientated and a clinically orientated system","2019","Journal of Electromyography and Kinesiology","44","","","156","164","8","15","10.1016/j.jelekin.2019.01.001","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85059839830&doi=10.1016%2fj.jelekin.2019.01.001&partnerID=40&md5=b0722e9a3462c90d1db6529548f9356a","Manchester United Football Club, AON Training Complex, Carrington, Manchester, United Kingdom; Arthritis Research UK Centre for Epidemiology, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom; Health Sciences Research Centre, School of Health Sciences, University of Salford, Salford, United Kingdom; Centre for Biostatistics, University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom; Department of Health Professions, Manchester Metropolitan University, Manchester, United Kingdom","Hughes T., Manchester United Football Club, AON Training Complex, Carrington, Manchester, United Kingdom, Arthritis Research UK Centre for Epidemiology, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom; Jones R.K., Health Sciences Research Centre, School of Health Sciences, University of Salford, Salford, United Kingdom; Starbuck C., Health Sciences Research Centre, School of Health Sciences, University of Salford, Salford, United Kingdom; Sergeant J.C., Arthritis Research UK Centre for Epidemiology, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom, Centre for Biostatistics, University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom; Callaghan M.J., Manchester United Football Club, AON Training Complex, Carrington, Manchester, United Kingdom, Arthritis Research UK Centre for Epidemiology, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom, Department of Health Professions, Manchester Metropolitan University, Manchester, United Kingdom"," In elite football, measurement of running kinetics with inertial measurement units (IMUs) may be useful as a component of periodic health examination (PHE). This study determined the reliability of, and agreement between a research orientated IMU and clinically orientated IMU system for initial peak acceleration (IPA) and IPA symmetry index (SI) measurement during running in elite footballers. On consecutive days, 16 participants performed treadmill running at 14kmph and 18kmph. Both IMUs measured IPA and IPA SI concurrently. All measurements had good or excellent within-session reliability (intraclass correlation coefficient (ICC 2,1 ) range = 0.79–0.96, IPA standard error of measurement (SEM) range = 0.19–0.62 g, IPA SI SEM range = 2.50–8.05%). Only the research orientated IMU demonstrated acceptable minimal detectable changes (MDCs) for IPA at 14kmph (range = 7.46–9.80%) and IPA SI at both speeds (range = 6.92–9.21%). Considering both systems, between-session IPA reliability ranged from fair to good (ICC 2,1 range = 0.63–0.87, SEM range = 0.51–1.10 g) and poor to fair for IPA SI (ICC 2,1 range = 0.32–0.65, SEM range = 8.07–11.18%). All MDCs were >10%. For IPA and SI, the 95% levels of agreement indicated poor between system agreement. Therefore, the use of IMUs to evaluate treadmill running kinetics cannot be recommended in this population as a PHE test to identify prognostic factors for injuries or for rehabilitation purposes. © 2019 The Authors","Accelerometer; Gait; Lower extremity; Symmetry","Acceleration; Accelerometry; Adolescent; Adult; Biomechanical Phenomena; Exercise Test; Humans; Male; Muscle, Skeletal; Reproducibility of Results; Running; Soccer; adolescent; adult; Article; body movement; clinical research; cohort analysis; human; kinetic parameters; measurement precision; periodic medical examination; priority journal; prognosis; retrospective study; running; scoring system; soccer player; sport injury; tibia; treadmill exercise; velocity; acceleration; accelerometry; biomechanics; evaluation study; exercise test; male; physiology; procedures; reproducibility; running; skeletal muscle; soccer; standards","Al-Amri M., Nicholas K., Button K., Sparkes V., Sheeran L., Davies J.L., Inertial measurement units for clinical movement analysis: reliability and concurrent validity, Sensors, 18, (2018); Bangsbo J., Mohr M., Krustrup P., Physical and metabolic demands of training and match-play in the elite football player, J. Sports Sci., 24, pp. 665-674, (2006); Bergamini E., Ligorio G., Summa A., Vannozzi G., Cappozzo A., Sabatini A.M., Estimating orientation using magnetic and inertial sensors and different sensor fusion approaches: accuracy assessment in manual and locomotion tasks, Sensors, 14, pp. 18625-18649, (2014); Bland J.M., Altman D.G., Statistical methods for assessing agreement between two methods of clinical measurement, Lancet, 346, pp. 307-310, (1986); Brophy R.H., Backus S.I., Pansy B.S., Lyman S., Williams R.J., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, J. Orthop. Sports Phys. Ther., 37, pp. 260-268, (2007); Charry E., Hu W., Umer M., Ronchi A., Taylor S., (2013); Coppieters M., Stappaerts K., Janssens K., Jull G., Reliability of detecting ‘onset of pain’ and ‘submaximal pain’ during neural provocation testing of the upper quadrant, Physiother. Res. Int., 7, pp. 146-156, (2002); Dowling A.V., Favre J., Andriacchi T.P., A wearable system to assess risk for anterior cruciate ligament injury during jump landing: measurements of temporal events, jump height, and sagittal plane kinematics, J. Biomech. Eng., 133, (2011); Ferguson T., Rowlands A.V., Olds T., Maher C., The validity of consumer-level, activity monitors in healthy adults worn in free-living conditions: a cross-sectional study, Int. J. Behav. Nutr. Phys. Act., 12, (2015); Flansbjer U.B., Holmback A.M., Downham D., Patten C., Lexell J., Reliability of gait performance tests in men and women with hemiparesis after stroke, J. Rehabil. Med., 37, pp. 75-82, (2005); Gill H.S., O'Connor J.J., Heelstrike and the pathomechanics of osteoarthrosis: a pilot gait study, J. Biomech., 36, pp. 1625-1631, (2003); Greenhalgh A., Sinclair J., Leat A., Chockalingam N., Influence of footwear choice, velocity and surfaces on tibial accelerations experienced by field hockey participants during running, Footwear Sci., 4, pp. 213-219, (2012); Hegedus E.J., McDonough S.M., Bleakley C., Baxter D., Cook CE. Clinician-friendly lower extremity physical performance tests in athletes: a systematic review of measurement properties and correlation with injury. Part 2–the tests for the hip, thigh, foot and ankle including the star excursion balance test, Br J. Sports Med., 49, pp. 649-656, (2015); Hughes T., Sergeant J.C., Parkes M., Callaghan M.J., Prognostic factors for specific lower extremity and spinal musculoskeletal injuries identified through medical screening and training load monitoring in professional football (soccer): a systematic review, BMJ Open Sport & Exercise Med., 3, pp. 1-18, (2017); Hughes T., Sergeant J.C., van der Windt D.A., Riley R., Callaghan M.J., Periodic health examination and injury prediction in professional football (soccer): theoretically, the prognosis is good, Sports Med., 48, pp. 2443-2448, (2018); Kavanagh J.J., Menz H.B., Accelerometry: a technique for quantifying movement patterns during walking, Gait Posture, 28, pp. 1-15, (2008); Kottner J., Audige L., Brorson S., Donner A., Gajewski B.J., Hrobjartsson A., Et al., Guidelines for Reporting Reliability and Agreement Studies (GRRAS) were proposed, Int. J. Nurs. Stud., 48, pp. 661-671, (2011); Lafortune M.A., Three-dimensional acceleration of the tibia during walking and running, J. Biomech., 24, pp. 877-886, (1991); Lafortune M.A., Hennig E., Valiant G., Tibial shock measured with bone and skin transducers, J. Biomech., 28, pp. 989-993, (1995); Lafortune M.A., Hennig E.M., Contribution of angular motion and gravity to tibial acceleration, Med. Sci. Sports Exerc., 23, pp. 360-363, (1991); Liikavainio T., Bragge T., Hakkarainen M., Jurvelin J.S., Karjalainen P.A., Arokoski J.P., Reproducibility of loading measurements with skin-mounted accelerometers during walking, Arch. Phys. Med. Rehabil., 88, pp. 907-915, (2007); Ljungqvist A., Jenoure P.J., Engebretsen A.H., Alonso J.M., Bahr R., Clough A.F., Et al., The international olympic committee consensus statement on periodic health evaluation of Elite Athletes, March 2009, Clin. J. Sport Med., 19, pp. 347-360, (2009); Lucas-Cuevas A.G., Encarnacion-Martinez A., Camacho-Garcia A., Llana-Belloch S., Perez-Soriano P., The location of the tibial accelerometer does influence impact acceleration parameters during running, J. Sports Sci., 35, pp. 1734-1738, (2017); Magee D.J., Orthopedic Physical Assessment, (2008); McCall A., Dupont G., Ekstrand J., Injury prevention strategies, coach compliance and player adherence of 33 of the UEFA Elite Club Injury Study teams: a survey of teams’ head medical officers, Br. J. Sports Med., 50, pp. 725-730, (2016); Mercer J.A., Chona C., Stride length–velocity relationship during running with body weight support, J. Sport Health Sci., 4, pp. 391-395, (2015); Raper D.P., Witchalls J., Philips E.J., Knight E., Drew M.K., Waddington G., Use of a tibial accelerometer to measure ground reaction force in running: a reliability and validity comparison with force plates, J. Sci. Med. Sport., 21, pp. 84-88, (2018); Robinson R.O., Herzog W., Nigg B.M., Use of force platform variables to quantify the effects of chiropractic manipulation on gait symmetry, J. Manipulative Physiol. Ther., 10, pp. 172-176, (1987); Sadhegi H., Allard P., Prince F., Labelle H., Symmetry and limb dominance in able bodied gait: a review, Gait Posture, 12, (2000); Sheerin K.R., Besier T.F., Reid D., Hume P.A., The one-week and six-month reliability and variability of three-dimensional tibial acceleration in runners, Sports Biomech., 17, pp. 531-540, (2018); Tenforde A.S., Ruder M.C., Jamison S.T., Singh P.P., Davis I.S., Is symmetry of loading improved for injured runners during novice barefoot running?, Gait Posture, 62, pp. 317-320, (2018); Weir J.P., Quantifying test-retest reliability using the intraclass correlation coefficient and the SEM, J. Strength Condition. Res., 19, pp. 231-240, (2005); Whatman C., Hing W., Hume P., Kinematics during lower extremity functional screening tests-are they reliable and related to jogging?, Phys. Ther. Sport., 12, pp. 22-29, (2011); Whittaker J.L., Booysen N., de la Motte S., Dennett L., Lewis C.L., Wilson D., Et al., Predicting sport and occupational lower extremity injury risk through movement quality screening: a systematic review, Br. J. Sports Med., 51, pp. 580-585, (2017); Wright S.P., Hall Brown T.S., Collier S.R., Sandberg K., How consumer physical activity monitors could transform human physiology research, Am. J. Physiol. Regul. Integr. Comp. Physiol., 312, pp. R358-R367, (2017); Zifchock R.A., Davis I., Hamill J., Kinetic asymmetry in female runners with and without retrospective tibial stress fractures, J. Biomech., 39, pp. 2792-2797, (2006); Zifchock R.A., Davis I., Higginson J., Royer T., The symmetry angle: a novel, robust method of quantifying asymmetry, Gait Posture, 27, pp. 622-627, (2008)","T. Hughes; Manchester United Football Club, AON Training Complex, Carrington, United Kingdom; email: tom.hughes.physio@manutd.co.uk","","Elsevier Ltd","10506411","","JEKIE","30658231","English","J. Electromyogr. Kinesiology","Article","Final","All Open Access; Green Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85059839830" "Serrano C.; Sánchez-Sánchez J.; López-Fernández J.; Hernando E.; Gallardo L.","Serrano, Carlos (57205120708); Sánchez-Sánchez, Javier (57202375975); López-Fernández, Jorge (57190878256); Hernando, Enrique (57191902110); Gallardo, Leonor (25936144300)","57205120708; 57202375975; 57190878256; 57191902110; 25936144300","Influence of the playing surface on changes of direction and plantar pressures during an agility test in youth futsal players","2020","European Journal of Sport Science","20","7","","906","914","8","13","10.1080/17461391.2019.1677780","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85074423580&doi=10.1080%2f17461391.2019.1677780&partnerID=40&md5=29ffa3dbce353c5f7fe838d249de3f02","IGOID Research Group, University of Castilla-La Mancha, Toledo, Spain; School of Sport Science, European University, Madrid, Spain; Centre for Innovative Research across the Life Course (CIRAL), Coventry University, Coventry, United Kingdom","Serrano C., IGOID Research Group, University of Castilla-La Mancha, Toledo, Spain; Sánchez-Sánchez J., IGOID Research Group, University of Castilla-La Mancha, Toledo, Spain, School of Sport Science, European University, Madrid, Spain; López-Fernández J., IGOID Research Group, University of Castilla-La Mancha, Toledo, Spain, Centre for Innovative Research across the Life Course (CIRAL), Coventry University, Coventry, United Kingdom; Hernando E., IGOID Research Group, University of Castilla-La Mancha, Toledo, Spain; Gallardo L., IGOID Research Group, University of Castilla-La Mancha, Toledo, Spain","The ability to effect a change of direction (COD) when performing high-speed actions is essential in team sports like futsal. Nevertheless, the interaction effect of sports surfaces on this ability remains unknown. This research aimed to analyse the plantar pressures and time performance of 15 youth futsal players when performing CODs on two playing surfaces with different mechanical properties. The shock absorption and vertical deformation of one synthetic flooring surface and one wooden flooring surface were assessed. CODs were evaluated using a modified version of the Agility T-Test, while total time of the test, time of CODs, and plantar pressure in CODs were all recorded. The wooden flooring surface displayed higher values of shock absorption (35.70% ± 2.87%) and vertical deformation (2.77 ± 0.38 mm) compared with the synthetic flooring (p < 0.01). Faster CODs were performed on the wooden flooring than on the synthetic flooring (−0.05 s, 95% confidence interval [CI]: −0.10 to −0.007, effect size [ES]: 0.07, p < 0.05), but no differences in total test time were found (p > 0.05). Finally, no differences in plantar pressures by playing surface were found. In sum, the differences in the mechanical properties of the two futsal surfaces affected the performance of futsal players in the modified agility test. However, these differences were not great enough to generate different plantar pressures on players, probably due to playerś own adaptations. © 2019 European College of Sport Science.","agility; COD; Futsal; performance; plantar pressures; sports surface","Adolescent; Athletic Performance; Biomechanical Phenomena; Floors and Floorcoverings; Foot; Humans; Leg; Manufactured Materials; Movement; Pressure; Running; Soccer; Wood; agility; article; controlled study; effect size; human; juvenile; sport; adolescent; athletic performance; biomechanics; building; device material; foot; leg; movement (physiology); physiology; pressure; running; soccer; wood","Andersson H., Ekblom B., Krustrup P., Elite football on artificial turf versus natural grass: Movement patterns, technical standards, and player impressions, Journal of Sports Sciences, 26, 2, pp. 113-122, (2008); Baroud G., Nigg B.M., Stefanyshyn D., Energy storage and return in sport surfaces, Sports Engineering, 2, 3, pp. 173-180, (1999); Beato M., Coratella G., Schena F., Brief review of the state of art in futsal, The Journal of Sports Medicine and Physical Fitness, 56, 4, pp. 428-432, (2016); Caetano F.G., de Oliveira M.J., Marche A.L., Nakamura F.Y., Cunha S.A., Moura F.A., Characterization of the sprint and repeated-sprint sequences performed by professional futsal players, according to playing position, during official matches, Journal of Applied Biomechanics, 31, 6, pp. 423-429, (2015); Castagna C., Alvarez J.C.B., Physiological demands of an intermittent futsal-oriented high-intensity test, Journal of Strength and Conditioning Research, 24, 9, pp. 2322-2329, (2010); Di Michele R., Di Renzo A.M., Ammazzalorso S., Merni F., Comparison of physiological responses to an incremental running test on treadmill, natural grass, and synthetic turf in young soccer players, Journal of Strength and Conditioning Research, 23, 3, pp. 939-945, (2009); Dogramaci N.S., Watsford L.M., A comparison of two different methods for time-motion analysis in team sports, International Journal of Performance Analysis in Sport, 6, 1, pp. 73-83, (2006); Dowling A.V., Corazza S., Chaudhari A.M.W., Andriacchi T.P., Shoe-surface friction influences movement strategies during a sidestep cutting task, The American Journal of Sports Medicine, 38, 3, pp. 478-485, (2010); Eils E., Streyl M., Linnenbecker S., Thorwesten L., Volker K., Rosenbaum D., Characteristic plantar pressure distribution patterns during soccer-specific movements, The American Journal of Sports Medicine, 32, 1, pp. 140-145, (2004); Ekstrand J., Hagglund M., Fuller C.W., Comparison of injuries sustained on artificial turf and grass by male and female elite football players, Scandinavian Journal of Medicine & Science in Sports, 21, 6, pp. 824-832, (2011); Fleming P., Artificial turf systems for sport surfaces: Current knowledge and research needs, Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 225, 2, pp. 43-63, (2011); Ford K.R., Manson N.A., Evans B.J., Myer G.D., Gwin R.C., Heidt R.S., Hewett T.E., Comparison of in-shoe foot loading patterns on natural grass and synthetic turf, Journal of Science and Medicine in Sport, 9, 6, pp. 433-440, (2006); Gil J.V.D., Pena S.G., Marhuenda A.M., Alvarez T.Z., Standardization of equipment for sport: Safety and quality in the management of sports facilities, Ingeniería y Territorio, 66, pp. 52-59, (2004); Hennig E.M., The influence of soccer shoe design on player performance and injuries, Research in Sports Medicine, 19, 3, pp. 186-201, (2011); Jimenez-Reyes P., Garcia-Ramos A., Cuadrado-Penafiel V., Parraga-Montilla J.A., Morcillo-Losa J.A., Samozino P., Morin J.-B., Differences in sprint mechanical force–velocity profile between trained soccer and futsal players, International Journal of Sports Physiology and Performance, 14, 4, pp. 478-485, (2019); Katkat D., Bulut Y., Demir M., Akar S., Effects of different sport surfaces on muscle performance, Biology of Sport, 26, 3, pp. 285-296, (2009); Kerdok A.E., Biewener A.A., McMahon T.A., Weyand P.G., Herr H.M., Energetics and mechanics of human running on surfaces of different stiffnesses, Journal of Applied Physiology, 92, 2, pp. 469-478, (2002); Koch M., Measuring plantar pressure in conventional shoes with the Tekscan sensory system, Biomedizinische Technik/Biomedical Engineering, 38, 10, pp. 243-248, (1993); Lefchak F.J., Longen W.C., Is there a relationship between the type of floor on futsal courts and musculature adaptive responses of futsal male athletes?, Revista Brasileira De Medicina Do Esporte, 20, 1, pp. 8-12, (2014); Lopez-Fernandez J., Sanchez-Sanchez J., Garcia-Unanue J., Felipe J.L., Colino E., Gallardo L., Physiological and physical responses according to the game surface in a soccer simulation protocol, International Journal of Sports Physiology and Performance, 13, 5, pp. 612-619, (2018); Martin R.B., Liptai L., Yerby S., Williams K.R., The relationship between mass and acceleration for impacts on padded surfaces, Journal of Biomechanics, 27, 3, pp. 361-364, (1994); McGhie D., Ettema G., Biomechanical analysis of surface-athlete impacts on third-generation artificial turf, The American Journal of Sports Medicine, 41, 1, pp. 177-185, (2013); Moreira D., Godoy J., Braz R., Machado G., Santos H., Kinesiologic aproach of the kick in indoor soccer and your clinic implications’, Revista Brasileira de Ciências e Movimento, 12, pp. 81-85, (2004); Naser N., Ali A., Macadam P., Physical and physiological demands of futsal, Journal of Exercise Science & Fitness, 15, 2, pp. 76-80, (2017); Nedelec M., McCall A., Carling C., Legall F., Berthoin S., Dupont G., Recovery in soccer, Sports Medicine, 43, 1, pp. 9-22, (2013); Nigg B.M., Anton M., Energy aspects for elastic and viscous shoe soles and playing surfaces, Medicine and Science in Sports and Exercise, 27, 1, pp. 92-97, (1995); Nigg B.M., Stefanyshyn D., Cole G., Stergiou P., Miller J., The effect of material characteristics of shoe soles on muscle activation and energy aspects during running, Journal of Biomechanics, 36, 4, pp. 569-575, (2003); Nikolaidis P.T., Knechtle B., Effect of the recovery duration of a repeated sprint exercise on the power output, jumping performance and lactate concentration in pre-pubescent soccer players, Biomedical Human Kinetics, 8, 1, pp. 58-64, (2016); Olsen O.E., Myklebust G., Engebretsen L., Holme I., Bahr R., Relationship between floor type and risk of ACL injury in team handball, Scandinavian Journal of Medicine and Science in Sports, 13, 5, pp. 299-304, (2003); Salinero J.J., Abian-Vicen J., Del Coso J., Gonzalez-Millan C., The influence of ankle dorsiflexion on jumping capacity and the modified agility t-test performance, European Journal of Sport Science, 14, 2, pp. 137-143, (2014); Sanchez-Sanchez J., Felipe J.L., Burillo P., Del Corral J., Gallardo L., Effect of the structural components of support on the loss of mechanical properties of football fields of artificial turf, Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 228, 3, pp. 155-164, (2014); Sanchez-Sanchez J., Garcia-Unanue J., Felipe J.L., Jimenez-Reyes P., Viejo-Romero D., Burillo P., Guerrero L.G., Physical and physiological responses of amateur football players on third-generation artificial turf systems during simulated game situations, Journal of Strength and Conditioning Research, 30, 11, pp. 3165-3177, (2016); Sanchez-Sanchez J., Garcia-Unanue J., Jimenez-Reyes P., Gallardo A., Burillo P., Felipe J.L., Gallardo L., Influence of the mechanical properties of third-generation artificial turf systems on soccer players’ physiological and physical performance and their perceptions, PloS One, 9, 10, (2014); Sassi R.H., Dardouri W., Yahmed M.H., Gmada N., Mahfoudhi M.E., Gharbi Z., Relative and absolute reliability of a modified agility T-test and its relationship with vertical jump and straight sprint, Journal of Strength and Conditioning Research, 23, 6, pp. 1644-1651, (2009); Taylor J.B., Wright A.A., Dischiavi S.L., Townsend M.A., Marmon A.R., Activity demands during multi-directional team sports: A systematic review, Sports Medicine, 47, 12, pp. 2533-2551, (2017); Tessutti V., Trombini-Souza F., Ribeiro A.P., Nunes A.L., Sacco I.C.N., In-shoe plantar pressure distribution during running on natural grass and asphalt in recreational runners, Journal of Science and Medicine in Sport, 13, 1, pp. 151-155, (2010); Tillman M.D., Fiolkowski P., Bauer J.A., Reisinger K.D., In-shoe plantar measurements during running on different surfaces: Changes in temporal and kinetic parameters, Sports Engineering, 5, 3, pp. 121-128, (2002); Ubago-Guisado E., Garcia-Unanue J., Lopez-Fernandez J., Sanchez-Sanchez J., Gallardo L., Association of different types of playing surfaces with bone mass in growing girls, Journal of Sports Sciences, 35, 15, pp. 1484-1492, (2017); Varkiani M.E., Alizadeh M.H., Pourkazemi L., The epidemiology of futsal injuries via sport medicine federation injury surveillance system of Iran in 2010, Procedia-Social and Behavioral Sciences, 82, pp. 946-951, (2013); Wang L., Hong Y., Li J.-X., Zhou J.-H., Comparison of plantar loads during running on different overground surfaces, Research in Sports Medicine, 20, 2, pp. 75-85, (2012)","C. Serrano; IGOID Research Group, University of Castilla-La Mancha, Toledo, Spain; email: carlos.serrano.90@hotmail.com","","Taylor and Francis Ltd.","17461391","","","31591942","English","Eur. J. Sport Sci.","Article","Final","","Scopus","2-s2.0-85074423580" "Chalitsios C.; Nikodelis T.; Panoutsakopoulos V.; Chassanidis C.; Kollias I.","Chalitsios, Christos (57933010200); Nikodelis, Thomas (8617234000); Panoutsakopoulos, Vassilios (6507381440); Chassanidis, Christos (16686540100); Kollias, Iraklis (6602722384)","57933010200; 8617234000; 6507381440; 16686540100; 6602722384","Classification of soccer and basketball players’ jumping performance characteristics: A logistic regression approach","2019","Sports","7","7","163","","","","12","10.3390/sports7070163","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092643068&doi=10.3390%2fsports7070163&partnerID=40&md5=9f37ea45d3e7abd52ee187236f833bb0","Biomechanics Laboratory, Department of Physical Education and Sports Sciences, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece","Chalitsios C., Biomechanics Laboratory, Department of Physical Education and Sports Sciences, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece; Nikodelis T., Biomechanics Laboratory, Department of Physical Education and Sports Sciences, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece; Panoutsakopoulos V., Biomechanics Laboratory, Department of Physical Education and Sports Sciences, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece; Chassanidis C., Biomechanics Laboratory, Department of Physical Education and Sports Sciences, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece; Kollias I., Biomechanics Laboratory, Department of Physical Education and Sports Sciences, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece","This study aimed to examine countermovement jump (CMJ) kinetic data using logistic regression, in order to distinguish sports-related mechanical profiles. Eighty-one professional basketball and soccer athletes participated, each performing three CMJs on a force platform. Inferential parametric and nonparametric statistics were performed to explore group differences. Binary logistic regression was used to model the response variable (soccer or not soccer). Statistical significance (p < 0.05) was reached for differences between groups in maximum braking rate of force development (RFDDmax, U79 = 1035), mean braking rate of force development (RFDDavg, U79 = 1038), propulsive impulse (IMPU, t79 = 2.375), minimum value of vertical displacement for center of mass (SBCMmin, t79 = 3.135), and time difference (% of impulse time; ∆T ) between the peak value of maximum force value (FUmax ) and SBCMmin (U79 = 1188). Logistic regression showed that RFDDavg, impulse during the downward phase (IMPD ), IMPU, and ∆T were all significant predictors. The model showed that soccer group membership could be strongly related to IMPU, with the odds ratio being 6.48 times higher from the basketball group, whereas RFDDavg, IMPD, and ∆T were related to basketball group. The results imply that soccer players execute CMJ differently compared to basketball players, exhibiting increased countermovement depth and impulse generation during the propulsive phase. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.","Biomechanics; Impulse; Rate of force development; Sport specificity; Vertical ground reaction force","","Borges G.M., Vaz M.A., De La Rocha Freitas C., Rassier D.E., The torque-velocity relation of elite soccer players, J. Sports Med. Phys. Fitness, 43, pp. 261-266, (2003); Mujika I., Santisteban J., Castagna C., In-season effect of short-term sprint and power training programs on elite junior soccer players, J. Strength Cond. Res, 23, pp. 2581-2587, (2009); Cronin J., Hansen T., Strength and power predictors of sports speed, J. Strength Cond. Res, 19, pp. 349-357, (2005); Loturco I., Ugrinowitsch C., Tricoli V., Pivetti B., Roschel H., Different loading schemes in power training during the preseason promote similar performance improvements in Brazilian elite soccer players, J. Strength Cond. Res, 27, pp. 1791-1797, (2013); Los Arcos A., Yanci J., Mendiguchia J., Salinero J.J., Brughelli M., Castagna C., Short-term training effects of vertically and horizontally oriented exercises on neuromuscular performance in professional soccer players, Int. J. Sports Physiol. Perform, 9, pp. 480-488, (2014); Claudino J.G., Cronin J., Mezencio B., McMaster D.T., McGuigan M., Tricoli V., Amadio A.C., Serrao J.C., The countermovement jump to monitor neuromuscular status: A meta-analysis, J. Sci. Med. Sport, 16, pp. 30152-30154, (2016); Vescovi J., McGuigan R., Relationships between sprinting, agility, and jump ability in female athletes, J. Sports Sci, 26, pp. 97-107, (2008); Wisloff U., Castagna C., Helgerud J., Jones R., Hoff J., Strong correlation of maximal squat strength with sprint performance and vertical jump height in elite soccer players, Br. J. Sports Med, 38, pp. 285-288, (2004); Kollias I., Hatzitaki V., Papaiakovou G., Giatsis G., Using Principal Components Analysis to identify individual differences in vertical jump performance, Res. Q. Exerc. Sport, 72, pp. 63-67, (2001); Ugrinowitch C., Tricoli V., Rodacki A., Batista M., Ricard M., Influence of training background on jumping height, J. Strength Cond. Res, 21, pp. 848-852, (2007); Parker J., Lundgren L.E., Surfing the waves of CMJ. Are there between sports differences in waveform data?, Sports, 6, (2018); Laffaye G., Wagner P., Tombleson T., Countermovement Jump Height: Gender and sport-specific differences in the force-time variables, J. Strength Cond. Res, 28, pp. 1096-1105, (2014); Panoutsakopoulos V., Papachatzis N., Kollias I., Sport specificity background affects the principal component structure of vertical squat jump performance of young adult female athletes, J. Sport Health Sci, 3, pp. 239-247, (2014); Ferber R., Osis S.T., Hicks J.L., Delp S.L., Gait biomechanics in the era of data science, J. Biomech, 49, pp. 3759-3761, (2016); Kollias I., Panoutsakopoulos V., Papaiakovou G., Comparing jumping ability among athletes of various sports, J. Strength Cond. Res, 18, pp. 546-550, (2004); Linthorne N.P., Analysis of standing vertical jumps using a force platform, Am. J. Phys, 69, pp. 1198-1204, (2001); Bilder C.R., Loughin T.M., Model Evaluation and Selection, Analysis of Categorical Data with R, pp. 285-301, (2015); Stukel T.A., Generalized Logistic Models, J. Am. Stat. Assoc, 83, pp. 426-431, (1988); Sahiner B., Chan H., Hadjiiski L., Classifier performance prediction for computer-aided diagnosis using a limited dataset, Med. Phys, 35, pp. 1559-1570, (2008); Borra S., Di Ciaccio A., Measuring the prediction error. A comparison of cross-validation, bootstrap and covariance penalty methods, Comput. Stat. Data Anal, 53, pp. 3735-3745, (2009); Hosmer D.W., Hosmer T., Le Cessie S., Lemeshow S., A comparison of goodness-of-fit tests for the logistic regression model, Stat. Med, 16, pp. 965-980, (1997); Salles A., Baltzopoulos V., Rittweger J., Differential effects of countermovement magnitude and volitional effort on vertical jumping, Eur. J. Appl. Physiol, 111, pp. 441-448, (2011); Sanchez-Sixto A., Harrison A.J., Floria P., Larger countermovement increases the jump height of countermovement jump, Sports, 6, (2018); Arabatzis A., Bruggemann G.P., Klapsing G.M., Leg stiffness and mechanical energetic processes during jumping on a sprung surface, Med. Sci. Sports Exerc, 6, pp. 923-931, (2001); Fukashiro S., Komi P.V., Joint moment and mechanical power flow of the lower limb during vertical jump, Int. J. Sports Med, 8, pp. 15-21, (1987); Wade L., Lichtwark G., Farris J.D., Movement strategies for countermovement jumping are potentially influenced by elastic energy stored and released from tendons, Sci. Rep, 8, (2018); Bobbert M.F., Casius L.J., Is the effect of a countermovement on jump height due to active state development?, Med. Sci. Sports Exerc, 37, pp. 440-446, (2005); Bobbert M.F., Casius R., Sijpkens I., Jaspers R.T., Humans adjust control to initial squat depth in vertical squat jumping, J. Appl. Physiol, 105, pp. 1428-1440, (2008); Vanrenterghem J., Lees A., Lenoir M., Aerts P., De Clercq D., Performing the vertical jump: Movement adaptations for submaximal jumping, Hum. Mov. Sci, 22, pp. 713-727, (2004); Yamaguchi G., Sawa A., Moran D., Fessler M., Winters J., A Survey of Human Musculotendon Actuator Parameters, Multiple Muscle Systems: Biomechanics and Movement Organization, pp. 717-777, (1990); Greenland S., Mansournia M., Altman D., Sparse data bias: A problem hiding in plain sight, BMJ, 353, (2016); Sperandei S., Understanding logistic regression analysis, Biochem. Med, 24, pp. 12-18, (2014)","C. Chalitsios; Biomechanics Laboratory, Department of Physical Education and Sports Sciences, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece; email: cchalits@phed.auth.gr","","MDPI","20754663","","","","English","Sports","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85092643068" "Peacock J.C.A.; Ball K.","Peacock, James C.A. (57193082900); Ball, Kevin (7101771783)","57193082900; 7101771783","The influence of joint rigidity on impact efficiency and ball velocity in football kicking","2018","Journal of Biomechanics","71","","","245","250","5","10","10.1016/j.jbiomech.2018.02.015","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042363350&doi=10.1016%2fj.jbiomech.2018.02.015&partnerID=40&md5=756a91f231af52aba19654664b4364e9","Institute for Sport, Exercise and Active Living (ISEAL), College of Sport and Exercise Science, Victoria University, Melbourne, Australia","Peacock J.C.A., Institute for Sport, Exercise and Active Living (ISEAL), College of Sport and Exercise Science, Victoria University, Melbourne, Australia; Ball K., Institute for Sport, Exercise and Active Living (ISEAL), College of Sport and Exercise Science, Victoria University, Melbourne, Australia","Executing any skill with efficiency is important for performance. In football kicking, conflicting and non-significant results have existed between reducing ankle plantarflexion during foot-ball contact with impact efficiency, making it unclear as to its importance as a coaching instruction. The aims of this study were to first validate a mechanical kicking machine with a non-rigid ankle, and secondly compare a rigid to a non-rigid ankle during the impact phase of football kicking. Measures of foot-ball contact for ten trials per ankle configuration were calculated from data recorded at 4000 Hz and compared. The non-rigid ankle was characterised by initial dorsiflexion followed by plantarflexion for the remainder of impact, and based on similarities to punt and instep kicking, was considered valid. Impact efficiency (foot-to-ball speed ratio) was greater for the rigid ankle (rigid = 1.16 ± 0.02; non-rigid = 1.10 ± 0.01; p < 0.001). The rigid ankle was characterised by significantly greater effective mass and significantly less energy losses. Increasing rigidity allowed a greater portion of mass from the shank to be used during the collision. As the ankle remained in plantarflexion at impact end, stored elastic energy was not converted to ball velocity and was considered lost. Increasing rigidity is beneficial for increasing impact efficiency, and therefore ball velocity. © 2018 Elsevier Ltd","Ankle plantarflexion; Australian football; Ball velocity; Soccer","Ankle Joint; Biomechanical Phenomena; Football; Humans; Energy dissipation; Rigidity; Velocity; Ankle plantarflexion; Australian football; Ball speed; Dorsiflexions; Effective mass; Elastic energy; Joint rigidity; Soccer; ankle; Article; controlled study; dorsiflexion; elasticity; football; football kicking; human; joint rigidity; leg movement; mathematical computing; motion; plantarflexion; priority journal; rigidity; velocity; biomechanics; football; physiology; Sports","Andersen T.B., Kristensen L.B., Sorensen H., pp. 74-78, (2005); Andersen T.B., Kristensen L.B., Sorensen H., Biomechanical differences between toe and instep kicking; influence of contact area on the coefficient of restitution, Footb. Sci., 5, pp. 45-50, (2008); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Ball K., Smith J., (2010); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (1988); Cross R., Physics of Baseball & Softball, (2011); Goff J.E., A review of recent research into aerodynamics of sport projectiles, Sports Eng., 16, pp. 137-154, (2013); Holm S., A simple sequentially rejective multiple test procedure, Scand. J. Stat., 6, pp. 65-70, (1979); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J. Sports Sci. Med., 6, pp. 154-165, (2007); Lees A., Nolan L., The biomechanics of soccer: a review, J. Sports Sci., 16, pp. 211-234, (1998); Nunome H., Ball K., Shinkai H., Myth and fact of ball impact dynamics in football codes, Footwear Sci., 6, pp. 105-118, (2014); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, J. Sports Sci., 24, pp. 11-22, (2006); Peacock J., Ball K., (2016); Peacock J., Ball K., Taylor S., The impact phase of drop punt kicking for maximal distance and accuracy, J. Sports Sci., 35, pp. 2289-2296, (2017); Shinkai H., Nunome H., Isokawa M., Ikegami Y., Ball impact dynamics of instep soccer kicking, Med. Sci. Sports Exer., 41, pp. 889-897, (2009); Shinkai H., Nunome H., Suito H., Inoue K., Ikegami Y., (2013)","J.C.A. Peacock; Office PB2, Victoria University, Footscray Park Campus, Footscray, Australia; email: james.peacock@live.vu.edu.au","","Elsevier Ltd","00219290","","JBMCB","29482926","English","J. Biomech.","Article","Final","","Scopus","2-s2.0-85042363350" "Nguyen A.; Beasley I.; Calder J.","Nguyen, Anthony (57198227247); Beasley, Ian (6603490201); Calder, James (57219236573)","57198227247; 6603490201; 57219236573","Stress fractures of the medial malleolus in the professional soccer player demonstrate excellent outcomes when treated with open reduction internal fixation and arthroscopic spur debridement","2019","Knee Surgery, Sports Traumatology, Arthroscopy","27","9","","2884","2889","5","8","10.1007/s00167-019-05483-6","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85064165301&doi=10.1007%2fs00167-019-05483-6&partnerID=40&md5=ef8c8b57061533fec38823d11e4ad321","Fortius Clinic, 17 Fitzhardinge St, London, W1H 6EQ, United Kingdom; Queen Mary College, University of London, Mile End Rd, London, E1 4NS, United Kingdom","Nguyen A., Fortius Clinic, 17 Fitzhardinge St, London, W1H 6EQ, United Kingdom; Beasley I., Queen Mary College, University of London, Mile End Rd, London, E1 4NS, United Kingdom; Calder J., Fortius Clinic, 17 Fitzhardinge St, London, W1H 6EQ, United Kingdom","Purpose: Despite a debilitating effect on athletic performance and an incidence of up to 4% of all stress fractures, there have been only 31 documented cases of medial malleolus stress fractures (MMSF) to our knowledge in the literature. The largest series to date is presented in this study, of 16 professional soccer players undergoing uniform operative treatment. The authors attempt to justify their preferred treatment of MMSFs in the professional soccer player, with an emphasis on patient satisfaction, clinical and radiographic union, and return to high level sport. The authors aim to prove an association between lower limb varus alignment and the development of MMSFs. Method: Sixteen professional soccer players of mean age 23.6 years were analysed. A biomechanic assessment was performed. Preoperative CT+-MRI scan were performed to assess fracture lines and the presence of anteromedial tibial and/or talar spurs; which are the likely pathognomic lesion in the development of MMSFs. All patients underwent open reduction and internal fixation with three screws, as well as arthroscopic debridement of impringement spurs, and concentrated bone marrow aspirate into the fracture site. Patients completed the Ogilvie–Harris score, and all patients had CT scans at 3 months and until union. Results: All the patients in this cohort had causative bony spurs that were debrided at surgery. All of the cohort achieved clinical union. All patients were able to return to professional football; at the same level as prior to the injury. There was complete cohort follow up; and 81% of patients were graded as excellent and 19% as good by the Ogilvie–Harris score. We noted 50% of our cohort demonstrated varus malalignment, either genu varum or hindfoot varus. Conclusions: The authors conclude that open reduction and internal fixation of MMSFs with screws combined with arthroscopic spur debridement results in excellent clinical outcomes. It can be concluded that varus lower limb malalignment is a risk factor for MMSFs. Given the treatment controversy for these injuries, the results herein demonstrate that aggressive multimodal operative treatment produces excellent outcomes in high demand professional footballers. This study is the first to report a biomechanic association, which can alert the clinician to preventative measures; such as hindfoot orthoses. Level of evidence: IV. © 2019, European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA).","Arthroscopy; Fixation; Medial malleolus; Spur debridement; Stress fracture; Varus alignment","Adolescent; Adult; Ankle Fractures; Ankle Joint; Athletes; Biomechanical Phenomena; Debridement; Fracture Fixation, Internal; Fractures, Stress; Humans; Magnetic Resonance Imaging; Male; Open Fracture Reduction; Soccer; Tarsal Bones; Tibia; Young Adult; adolescent; adult; ankle; ankle fracture; athlete; biomechanics; debridement; human; male; nuclear magnetic resonance imaging; open fracture reduction; osteosynthesis; soccer; stress fracture; tarsal bone; tibia; young adult","Bhargava R., Sankhla S., Gupta A., Et al., Percutaneous autologous bone marrow injection in the treatment of delayed or non-union, Indian J Orthop, 41, 1, pp. 67-71, (2007); Chahla J., Mannava S., Cinque M., Et al., Bone marrow aspirate concentrate harvesting and processing technique, Arthrosc Tech, 6, 2, pp. e441-e445, (2017); Coull R., Raffiq T., James L., Stephens M., Open treatment of anterior impingement of the ankle, J Bone Jt Surg (Br), 85-B, pp. 550-553, (2003); Hernigou P., Poignard A., Beaujean F., Et al., Percutaneous autologous bone-marrow grafting for nonunions. Influence of the number and concentration of progenitor cells, J Bone Jt Surg Am, 87, 7, pp. 1430-1437, (2005); Irion V., Miller T., Kaeding C., The treatment and outcomes of medial malleolar stress fractures: a systematic review of the literature, Sports Health, 6, 6, pp. 527-530, (2014); Jowett A., Birks C., Blackney M., Medial malleolar stress fracture secondary to chronic ankle impingement, Foot Ankle Int, 29, 7, pp. 716-721, (2008); Kor A., Saltzman A., Wempe P., Medial malleolar stress fractures: literature review, diagnosis and treatment, J Am Podiatr Med Assoc, 93, 4, pp. 292-297, (2003); Lempainen L., Limatainen E., Heikkila J., Et al., Medial malleolar stress fracture in athletes: diagnosis and operative treatment, Scand J Surg, 10, 4, pp. 261-264, (2012); Madry H., Gao L., Eichler H., Et al., Bone marrow aspirate concentrate-enhanced marrow stimulation of chondral defects, Stem Cells Int, 2017, (2017); Menge T., Looney C., Medial malleolar stress fracture in an adolescent athlete, J Foot Ankle Surg, 54, 2, pp. 242-246, (2015); Murawski C., Kennedy J., Percutaneous internal fixation of proximal fifth metatarsal jones fractures (zones II and III) with Charlotte Carolina screw and bone marrow aspirate concentrate: an outcome study in athletes, Am J Sports Med, 39, 6, pp. 1295-1301, (2011); Orava S., Karpakka J., Taimela S., Et al., Stress fractures of the medial malleolus, J Bone Jt Surg Am, 77, 3, pp. 362-365, (1995); Sanders T., Fults-Ganey C., DeLee and Drez’s orthopaedic sports medicine, pp. 2133-2190, (2003); Shabat S., Sampson K., Mann G., Et al., Stress fractures of the medial malleolus-review of the literature and report of a 15-year-old elite gymnast, Foot Ankle Int, 23, 7, pp. 647-650, (2002); Shelbourne K., Fisher D., Rettig A., Et al., Stress fractures of the medial malleolus, Am J Sports Med, 16, 1, pp. 60-63, (1998); Sherbondy P., Sebastinaelli W., Stress fractures of the medial malleolus and distal fibula, Clin Sports Med, 25, 1, pp. 129-137, (2006); Stoller S., Hekmat F., Kleiger B., A comparative study of the frequency of anterior impingement exostoses of the ankle in dancers and nondancers, Foot Ankle, 4, 4, pp. 201-203, (1984); Soni A., Vollans S., Haendlmayer K., Et al., Bilateral medial malleolus stress fractures due to osteoarthritis of knee: A case report and review of literature, Int J Surg Case Rep, 6C, (2015); Wenger A., Wolinsky P., Robbins M., Garcia T., Maitra S., Amanatullah D., Antiglide plate of vertical medial malleolus fractures provides stiffer initial fixation than bicortical or unicortical screw fixation, Clin Biomech (Bristol Avon), 31, pp. 29-32, (2016)","A. Nguyen; Fortius Clinic, London, 17 Fitzhardinge St, W1H 6EQ, United Kingdom; email: dranthonynguyen@live.com","","Springer Verlag","09422056","","","30915513","English","Knee Surg. Sports Traumatol. Arthroscopy","Article","Final","","Scopus","2-s2.0-85064165301" "Juárez D.; Mallo J.; De Subijana C.L.; Navarro E.","Juárez, D. (57216932208); Mallo, J. (23992960900); De Subijana, C.L. (25936056800); Navarro, E. (24449528700)","57216932208; 23992960900; 25936056800; 24449528700","Kinematic analysis of kicking in young top-class soccer players","2011","Journal of Sports Medicine and Physical Fitness","51","3","","366","373","7","11","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-82955226305&partnerID=40&md5=feaaeace22ab0bfefa61ea91ed8c41d0","Sport Biomechanics Laboratory, Faculty of Physical Activity and Sport Sciences, Technical University of Madrid, Madrid, Spain; Faculty of Physical Activity and Sport Sciences, 28040 Madrid, Avenida Martín Fierro, s/n, Spain","Juárez D., Sport Biomechanics Laboratory, Faculty of Physical Activity and Sport Sciences, Technical University of Madrid, Madrid, Spain, Faculty of Physical Activity and Sport Sciences, 28040 Madrid, Avenida Martín Fierro, s/n, Spain; Mallo J., Sport Biomechanics Laboratory, Faculty of Physical Activity and Sport Sciences, Technical University of Madrid, Madrid, Spain; De Subijana C.L., Sport Biomechanics Laboratory, Faculty of Physical Activity and Sport Sciences, Technical University of Madrid, Madrid, Spain; Navarro E., Sport Biomechanics Laboratory, Faculty of Physical Activity and Sport Sciences, Technical University of Madrid, Madrid, Spain","Aim. The aim of this study was to describe the kinematic pattern of the kicking movement of young top-class soccer players focusing in examining the linear joint markers velocity of the leg kick and the segments angular position. Methods. Maximal instep kicks performed by 21 young top-class soccer players (16.1±0.2 years) were analyzed using a three dimensional motion capture system. Results. The ball was released at a mean velocity of 30.6±1.54 m/s. The maximum linear velocity of the hip (5.49±0.53 m/s), knee (10.89±0.63 m/s), ankle (19.36±0.96 m/s) and toe (24.59±1.33 m/s) joint markers were achieved consecutively during the kick, representing a typical proximal to distal kinetic chain. Significant (P<0.01) differences in the arms, trunk, thigh, shank and foot segments angular positions were found among the instant times in which the key events took place, determined by the maximum velocity of the hip (Tl), knee (T2), ankle (T3) and toe (T4) joint markers (except between T3 and T4). This fact indicates that the instant time when each joint marker reached its maximum velocity implied different positions of the body segments. Conclusion. The results of this study provide additional data about the kicking biomechanics of young top-class soccer players. This information should be taken in consideration by coaches that train young soccer players.","Biomechanics motor skills; Soccer","Adolescent; Analysis of Variance; Athletic Performance; Biomechanics; Humans; Kinetics; Lower Extremity; Male; Range of Motion, Articular; Soccer; adolescent; analysis of variance; article; athletic performance; biomechanics; human; joint characteristics and functions; kinetics; leg; male; physiology; sport","Barfield W., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, J Sports Sci Med, 1, pp. 72-79, (2002); Vucetic V., Sporis G., Jukic I., Muscle strength, kicking and sprinting performance parameters in elite female soccer players, J Sports Sci Med, pp. 109-110, (2007); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, Journal of Sports Sciences, 24, 1, pp. 11-22, (2006); Putnam C.A., A segment interaction analysis of proximal to distal secuential segment motion patterns, Med Sei Sports Exerc, 23, pp. 130-144, (1991); Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, Journal of Sports Sciences, 24, 9, pp. 951-960, (2006); Capranica L., Cama G., Fanton F., Tessitore A., Figura F., Force and power of preferred and non-preferred leg in young soccer players, Journal of Sports Medicine and Physical Fitness, 32, 4, pp. 358-363, (1992); Luhtanen P., Kinematics and kinetics of maximal instep kicking-in junior soccer players, Science and Football, pp. 441-448, (1988); Rodano R., Tavana R., Three-dimensional analysis of instep kick in profesional soccer players, Science and Football, pp. 357-361, (1993); Poulmedis P., Rondoyannis G., Mitsou A., Tsarouchas E., The influence of isokinetic muscle torque exerted in various speeds on soccer ball velocity, J Orthop Sport Phys Ther, 10, pp. 93-96, (1988); Taiana F., Grehaigne J.F., Cometti G., The influence of maximal strength training of lower limbs of soccer players on their physical and kick performances, Science and Football, pp. 94-97, (1993); Trolle M., Aagaard P., Simonsen E.B., Bangsbo J., Klausen K., Effects of strength training on kicking performance in soccer, Science and Football, pp. 95-97, (1993); Nunome H., Ikegami Y., Lozakai R., Apriantano T., Sano S., Segmentai dynamics of soccer instep kicking with the preferred and nonpreferred leg, J Sports Sci, 24, pp. 529-541, (2006); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, 12, pp. 2028-2036, (2002); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, 4, pp. 293-299, (2002); Manolopoulos E., Papadopoulos C., Salonikidis K., Katartzi E., Poluha S., Strength training effects on physical conditioning and instep kick kinematics in young amateur soccer players during preseason, Perceptual and Motor Skills, 99, 2, pp. 701-710, (2004); Barfield W.R., Effects of selected kinematic and kinetic variables on instep kicking with dominant and nondominant limbs, Journal of Human Movement Studies, 29, 6, pp. 251-272, (1995); Manolopoulos E., Papadopoulos C., Kellis E., Effects of combined strength and kick coordination training on soccer kick biomechanics in amateur players, Scandinavian Journal of Medicine and Science in Sports, 16, 2, pp. 102-110, (2006); Kellis E., Katis A., Vrabas I.S., Effects of an intermittent exercise fatigue protocol on biomechanics of soccer kick performance, Scandinavian Journal of Medicine and Science in Sports, 16, 5, pp. 334-344, (2006); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, 6, pp. 917-927, (1998); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomech, 4, pp. 59-72, (2005); Orloff H., Sumida B., Chow J., Habibi L., Fujino A., Kramer B., Ground reaction forcees and kinematics of plant leg position during instep kicking in male and female collegiate soccer players, Sports Biomech, 7, pp. 238-247, (2008); Shan G., Influence of gender and experience on the maximal instep soccer kick, Eur J Sport Sci, 9, pp. 107-114, (2009); Hay J., The Biomechanics of Sports Techniques., (1993); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J Sports Sci Med, 6, pp. 154-165, (2007); Vicon User Manual., (2003); Markovic G., Dizdar D., Jaric S., Evaluation of tests of maximum kicking performance, Journal of Sports Medicine and Physical Fitness, 46, 2, pp. 215-220, (2006); Woltring H.J., On optimal smoothing and derivative estimation from noisy displacement data in biomechanics, Human Movement Science, 4, 3, pp. 229-245, (1985); Kreighbaum E., Bartheis K.M., Biomechanics: A Qualitative Approach for Studying Human Movement., (1985); Mognoni P., Narici M.V., Sirtori M.D., Lorenzelli F., Isokinetic torques and kicking maximal ball velocity in young soccer players, J Sports Med Phys Fitness, 34, pp. 357-361, (1994); Helgerud J., Engen L.C., Wisloff U., Hoff J., Aerobic endurance training improves soccer performance, Medicine and Science in Sports and Exercise, 33, 11, pp. 1925-1931, (2001); Navarro E., Cabrero O., Vizcaino F., A three-dimensional analysis of angular velocities of segments in javelin throwing, Proceedings of the 16th ISBS Syposium on Biomechanics, pp. 204-207, (1998); McLean B.D., Tumilty D.M., Left-right asymmetry in two types of soccer kick, British Journal of Sports Medicine, 27, 4, pp. 260-262, (1993); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, 3, pp. 211-234, (1998)","D. Juárez; Faculty of Physical Activity and Sport Sciences, 28040 Madrid, Avenida Martín Fierro, s/n, Spain; email: djuarezsg@yahoo.es","","","00224707","","JMPFA","21904274","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-82955226305" "Barros R.M.L.; Cunha S.A.; Magalhães Jr. W.J.; Guimarães M.F.","Barros, Ricardo M. L. (7006625893); Cunha, S.A. (16416879600); Magalhães Jr., W.J. (15061446700); Guimarães, M.F. (15061567800)","7006625893; 16416879600; 15061446700; 15061567800","Representation and analysis of soccer players' actions using principal components","2006","Journal of Human Movement Studies","51","2","","103","116","13","8","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33750953272&partnerID=40&md5=f12743ce44c60d8ac8204745320df538","Laboratory of Instrumentation for Biomechanics, College of Physical Education, Campinas State University, Campinas, Brazil; Laboratory of Biomechancial Analysis, Department of Physical Education, Paulista State University, Rio Claro, Brazil; Universidade Estadual de Campinas, Faculdade de Educação Física, DEM, CEP 13083-970 - Campinas - SP, CX 6134, Brazil","Barros R.M.L., Laboratory of Instrumentation for Biomechanics, College of Physical Education, Campinas State University, Campinas, Brazil, Universidade Estadual de Campinas, Faculdade de Educação Física, DEM, CEP 13083-970 - Campinas - SP, CX 6134, Brazil; Cunha S.A., Laboratory of Biomechancial Analysis, Department of Physical Education, Paulista State University, Rio Claro, Brazil; Magalhães Jr. W.J., Laboratory of Biomechancial Analysis, Department of Physical Education, Paulista State University, Rio Claro, Brazil; Guimarães M.F., Laboratory of Biomechancial Analysis, Department of Physical Education, Paulista State University, Rio Claro, Brazil","This paper proposes the use of the Principal Components Analysis (PCA) method to represent and to analyse soccer players' actions distribution in the pitch. The seven games of the Brazilian National Team during the 2002 World Cup were analysed. The player's position actions were measured from videotapes in a computer interface. The results were: a) the graphical representation, given by two orthogonal segments in the two directions of maximal variability and centred at the mean of each player's actions position; b) the eccentricity measurement, given by the variability ratio and c) the actions zone area, given by variability product. The results showed that the individual characteristics of acting were well represented by the PCA, allowing comparisons among games and providing insights related to the tactical organisation of the team. ©2006 Teviot Scientific Publications.","Biomechanics; Notation; Tactical analysis","","Abdel-Aziz Y.I., Karara H.M., Direct linear transformation from comparator coordinates into object-space coordinates, ASP/UI Symposium on Close-Range Photogrammetry, pp. 1-18, (1971); Barros R.M.L., Bergo F., Anido R., Cunha S.A., Lima Filho E.C., Brenzikofer R., Freire J.B., Sistema de anotação de ações de jogadores de futebol, Revista Brasileira de Ciência e Movimento, 10, pp. 7-14, (2002); Barros R.M.L., Russomanno T.G., Brenzikofer R., Figueroa P.J., A method to synchronise video cameras using the audio band, J. Biomech., 39, pp. 776-780, (2006); Cunha S.A., Binotto M.R., Barros R.M.L., Análise da variabilidade na medição de posicionamento tático no futebol, Revista Paulista de Educação Física, 15, pp. 111-116, (2001); Dufour W., Computer-assisted scouting in soccer, Science and Football II, pp. 160-166, (1993); Figueroa P.J., Leite N.J., Barros R.M.L., A flexible software for tracking of markers used in human motion analysis, Comput. Meth. Prog. Bio., 72, pp. 155-165, (2003); Figueroa P.J., Leite N.J., Barros R.M.L., Background recovering in outdoor image sequences: An example of soccer players segmentation, Image Vis. Comput., 24, pp. 363-374, (2006); Figueroa P.J., Leite N.J., Barros R.M.L., Tracking soccer players aiming their kinematical motion analysis, Comput. Vis. Image Understand., 101, pp. 122-135, (2006); Hughes M., Notation analysis in football, Science and Football II, pp. 151-159, (1993); Hughes M., Franks I., Analysis of passing sequences, shots and goals in soccer, J. Sport Sci., 23, pp. 509-514, (2005); Jackson J.E., A User's Guide to Principal Components, (1991); Mcgill R., Tukey J., Larsen W.A., Variations of box plots, Am. Stat., 32, pp. 12-16, (1978); Nevill A.M., Atkinson G., Hughes M.D., Stephen-Mark C., Statistical methods for analysing discrete and categorical data recorded in performance analysis, J. Sport Sci., 20, pp. 829-844, (2002); Partridge D., Mosher R.E., Franks I.M., A computer assisted analysis of technical performance - A comparison of the 1990 World Cup and intercollegiate soccer, Science and Football II, pp. 221-231, (1993); Reep C., Benjamin B., Skill and chance in Association Football, J. R. Stat. Soc. Ser. A, 131, pp. 581-585, (1968); Reilly T., Science and Soccer, (1996); Sforza C., Michielon G., Grassi G., Alberti G., Ferrario V.F., Bivariate analysis of the repeatability of football offensive schemes, Science and Football III, pp. 233-239, (1997); Winkler W., A new approach to the video analysis of tactical aspects of soccer, Science and Football, pp. 368-372, (1988); Yamanaka K., Hughes M., Lott M., An analysis of playing patterns in the 1990 World Cup for association football, Science and Football II, pp. 206-214, (1993)","R.M.L. Barros; Universidade Estadual de Campinas, Faculdade de Educação Física, DEM, CEP 13083-970 - Campinas - SP, CX 6134, Brazil; email: ricardo@fef.unicamp.br","","","03067297","","","","English","J. Hum. Mov. Stud.","Article","Final","","Scopus","2-s2.0-33750953272" "Palucci Vieira L.H.; Santiago P.R.P.; Pinto A.; Aquino R.; Torres R.D.S.; Barbieri F.A.","Palucci Vieira, Luiz H. (56789595600); Santiago, Paulo R P (36098423400); Pinto, Allan (55557663800); Aquino, Rodrigo (57192645540); Torres, Ricardo da S (56385629000); Barbieri, Fabio A. (35798078800)","56789595600; 36098423400; 55557663800; 57192645540; 56385629000; 35798078800","Automatic Markerless Motion Detector Method against Traditional Digitisation for 3-Dimensional Movement Kinematic Analysis of Ball Kicking in Soccer Field Context","2022","International journal of environmental research and public health","19","3","1179","","","","9","10.3390/ijerph19031179","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85125591290&doi=10.3390%2fijerph19031179&partnerID=40&md5=0ae160a8893c2b0b763b2f0f8661c4ef","Human Movement Research Laboratory (MOVI-LAB), Graduate Program in Movement Sciences, Department of Physical Education, Faculty of Sciences, São Paulo State University (Unesp), Bauru, 17033-360, Brazil; LaBioCoM Biomechanics and Motor Control Laboratory, EEFERP School of Physical Education and Sport of Ribeirão Preto, USP University of São Paulo, Campus Ribeirão Preto, Ribeirão Preto 14040-907, Brazil; Reasoning for Complex Data Laboratory (RECOD Lab), Institute of Computing, University of Campinas, Campinas 13083-852, Brazil; FMRP Faculty of Medicine at Ribeirão Preto, University of São Paulo, Ribeirão Preto 14049-900, Brazil; LabSport, Department of Sports, CEFD Center of Physical Education and Sports, UFES Federal University of Espírito Santo, Vitória 29075-910, ES, Brazil; Department of ICT and Natural Sciences, NTNU-Norwegian University of Science and Technology, Ålesund, 6009, Norway","Palucci Vieira L.H., Human Movement Research Laboratory (MOVI-LAB), Graduate Program in Movement Sciences, Department of Physical Education, Faculty of Sciences, São Paulo State University (Unesp), Bauru, 17033-360, Brazil; Santiago P.R.P., LaBioCoM Biomechanics and Motor Control Laboratory, EEFERP School of Physical Education and Sport of Ribeirão Preto, USP University of São Paulo, Campus Ribeirão Preto, Ribeirão Preto 14040-907, Brazil; Pinto A., Reasoning for Complex Data Laboratory (RECOD Lab), Institute of Computing, University of Campinas, Campinas 13083-852, Brazil; Aquino R., LaBioCoM Biomechanics and Motor Control Laboratory, EEFERP School of Physical Education and Sport of Ribeirão Preto, USP University of São Paulo, Campus Ribeirão Preto, Ribeirão Preto 14040-907, Brazil, FMRP Faculty of Medicine at Ribeirão Preto, University of São Paulo, Ribeirão Preto 14049-900, Brazil, LabSport, Department of Sports, CEFD Center of Physical Education and Sports, UFES Federal University of Espírito Santo, Vitória 29075-910, ES, Brazil; Torres R.D.S., Department of ICT and Natural Sciences, NTNU-Norwegian University of Science and Technology, Ålesund, 6009, Norway; Barbieri F.A., Human Movement Research Laboratory (MOVI-LAB), Graduate Program in Movement Sciences, Department of Physical Education, Faculty of Sciences, São Paulo State University (Unesp), Bauru, 17033-360, Brazil","Kicking is a fundamental skill in soccer that often contributes to match outcomes. Lower limb movement features (e.g., joint position and velocity) are determinants of kick performance. However, obtaining kicking kinematics under field conditions generally requires time-consuming manual tracking. The current study aimed to compare a contemporary markerless automatic motion estimation algorithm (OpenPose) with manual digitisation (DVIDEOW software) in obtaining on-field kicking kinematic parameters. An experimental dataset of under-17 players from all outfield positions was used. Kick attempts were performed in an official pitch against a goalkeeper. Four digital video cameras were used to record full-body motion during support and ball contact phases of each kick. Three-dimensional positions of hip, knee, ankle, toe and foot centre-of-mass (CMfoot) generally showed no significant differences when computed by automatic as compared to manual tracking (whole kicking movement cycle), while only z-coordinates of knee and calcaneus markers at specific points differed between methods. The resulting time-series matrices of positions (r2 = 0.94) and velocity signals (r2 = 0.68) were largely associated (all p < 0.01). The mean absolute error of OpenPose motion tracking was 3.49 cm for determining positions (ranging from 2.78 cm (CMfoot) to 4.13 cm (dominant hip)) and 1.29 m/s for calculating joint velocity (0.95 m/s (knee) to 1.50 m/s (non-dominant hip)) as compared to reference measures by manual digitisation. Angular range-of-motion showed significant correlations between methods for the ankle (r = 0.59, p < 0.01, large) and knee joint displacements (r = 0.84, p < 0.001, very large) but not in the hip (r = 0.04, p = 0.85, unclear). Markerless motion tracking (OpenPose) can help to successfully obtain some lower limb position, velocity, and joint angular outputs during kicks performed in a naturally occurring environment.","COCO; deep learning; human estimation; image processing; MPII; team sports","Biomechanical Phenomena; Humans; Knee; Lower Extremity; Movement; Soccer; biomechanics; human; knee; lower limb; movement (physiology); soccer","","","","NLM (Medline)","16604601","","","35162201","English","Int J Environ Res Public Health","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85125591290" "King M.G.; Semciw A.I.; Schache A.G.; Middleton K.J.; Heerey J.J.; Sritharan P.; Scholes M.J.; Mentiplay B.F.; Crossley K.M.","King, Matthew G. (55636112000); Semciw, Adam I. (55022720000); Schache, Anthony G. (6602235911); Middleton, Kane J. (57202472881); Heerey, Joshua J. (57200082291); Sritharan, Prasanna (55151572300); Scholes, Mark J. (57196080819); Mentiplay, Benjamin F. (55675788700); Crossley, Kay M. (7004850146)","55636112000; 55022720000; 6602235911; 57202472881; 57200082291; 55151572300; 57196080819; 55675788700; 7004850146","Lower-limb biomechanics in football players with and without hip-related pain","2020","Medicine and Science in Sports and Exercise","52","8","","1776","1784","8","9","10.1249/MSS.0000000000002297","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85088251878&doi=10.1249%2fMSS.0000000000002297&partnerID=40&md5=7869f630cab0e9a0d89e88862f5947a6","La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Bundoora, VIC, Australia","King M.G., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Bundoora, VIC, Australia; Semciw A.I., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Bundoora, VIC, Australia; Schache A.G., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Bundoora, VIC, Australia; Middleton K.J., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Bundoora, VIC, Australia; Heerey J.J., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Bundoora, VIC, Australia; Sritharan P., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Bundoora, VIC, Australia; Scholes M.J., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Bundoora, VIC, Australia; Mentiplay B.F., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Bundoora, VIC, Australia; Crossley K.M., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Bundoora, VIC, Australia","Purpose: This study aimed to evaluate the differences in lower-limb biomechanics between adult subelite competitive football players with and without hip-related pain during two contrasting tasks-walking and single-leg drop jump (SLDJ)-and to determine whether potential differences, if present, are sex dependent. Methods: Eighty-eight football players with hip-related pain (23 women, 65 men) and 30 asymptomatic control football players (13 women, 17 men) who were currently participating in competitive sport were recruited. Biomechanical data were collected for the stance phase of walking and SLDJ. Pelvis, hip, knee, and ankle angles, as well as the impulse of the external joint moments, were calculated. Differences between groups and sex-specific effects were calculated using linear regression models. Results: Compared with their asymptomatic counterparts, football players with hip-related pain displayed a lower average pelvic drop angle during walking (P = 0.03) and a greater average pelvic hike angle during SLDJ (P < 0.05). Men with hip-related pain displayed a smaller total range of motion (excursion) for the transverse plane pelvis angle (P = 0.03) and a smaller impulse of the hip external rotation moment (P < 0.01) during walking compared with asymptomatic men. Women with hip-related pain displayed a greater total range of motion (excursion) for the sagittal plane knee angle (P = 0.01) during walking compared with asymptomatic women. Conclusion: Overall, few differences were observed in lower-limb biomechanics between football players with and without hip-related pain, irrespective of the task. This outcome suggests that, despite the presence of symptoms, impairments in lower-limb biomechanics during function do not appear to be a prominent feature of people with hip-related pain who are still participating in sport. Copyright © 2020 by the American College of Sports Medicine","Biomechanics; Femoroacetabular Impingement; Gait; Hip Pain; Rehabilitation; Walking","Adult; Arthralgia; Biomechanical Phenomena; Case-Control Studies; Cross-Sectional Studies; Female; Hip Joint; Humans; Lower Extremity; Male; Pelvis; Plyometric Exercise; Range of Motion, Articular; Rotation; Sex Factors; Soccer; Task Performance and Analysis; Walking; adult; arthralgia; biomechanics; case control study; cross-sectional study; female; hip; human; joint characteristics and functions; lower limb; male; pathophysiology; pelvis; physiology; plyometrics; rotation; sex factor; soccer; task performance; walking","Rankin A.T., Bleakley C.M., Cullen M., Hip joint pathology as a leading cause of groin pain in the sporting population: A 6-year review of 894 cases, Am J Sports Med, 43, 7, pp. 1698-1703, (2015); Heerey J.J., Kemp J.L., Mosler A.B., Et al., What is the prevalence of imaging-defined intra-articular hip pathologies in people with and without pain? A systematic review and meta-analysis, BJSM Online, 52, 9, pp. 581-593, (2018); Thorborg K., Rathleff M.S., Petersen P., Branci S., Holmich P., Prevalence and severity of hip and groin pain in sub-elite Male football: A cross-sectional cohort study of 695 players, Scand J Med Sci Sports, 27, 1, pp. 107-114, (2017); Diamond L.E., Wrigley T.V., Bennell K.L., Hinman R.S., O'Donnell J., Hodges P.W., Hip joint biomechanics during gait in people with and without symptomatic femoroacetabular impingement, Gait Posture, 43, pp. 198-203, (2016); Brisson N., Lamontagne M., Kennedy M.J., Beaule P.E., The effects of cam femoroacetabular impingement corrective surgery on lower-extremity gait biomechanics, Gait Posture, 37, 2, pp. 258-263, (2013); Rylander J., Shu B., Favre J., Safran M., Andriacchi T., Functional testing provides unique insights into the pathomechanics of femoroacetabular impingement and an objective basis for evaluating treatment outcome, J Orthop Res, 31, 9, pp. 1461-1468, (2013); Hunt M.A., Guenther J.R., Gilbart M.K., Kinematic and kinetic differences during walking in patients with and without symptomatic femoroacetabular impingement, Clin Biomech (Bristol, Avon), 28, 5, pp. 519-523, (2013); Diamond L.E., Allison K., Dobson F., Hall M., Hip joint moments during walking in people with hip osteoarthritis: A systematic review and meta-analysis, Osteoarthr Cartil, 26, 11, pp. 1415-1424, (2018); Meyer C.A.G., Wesseling M., Corten K., Et al., Hip movement pathomechanics of patients with hip osteoarthritis aim at reducing hip joint loading on the osteoarthritic side, Gait Posture, 59, pp. 11-17, (2018); Hurwitz D.E., Hulet C.H., Andriacchi T.P., Rosenberg A.G., Galante J.O., Gait compensations in patients with osteoarthritis of the hip and their relationship to pain and passive hip motion, J Orthop Res, 15, 4, pp. 629-635, (1997); Beaulieu M.L., Lamontagne M., Beaule P.E., Lower limb biomechanics during gait do not return to normal following total hip arthroplasty, Gait Posture, 32, 2, pp. 269-273, (2010); King M.G., Lawrenson P.R., Semciw A.I., Middleton K.J., Crossley K.M., Lower limb biomechanics in femoroacetabular impingement syndrome: A systematic review and meta-analysis, Br J Sports Med, 52, 9, pp. 566-580, (2018); King M.G., Heerey J.J., Schache A.G., Et al., Lower limb biomechanics during low- And high-impact functional tasks differ between men and women with hip-related groin pain, Clin Biomech, 68, pp. 96-103, (2019); Crossley K.M., Pandy M.G., Majumdar S., Et al., Femoroacetabular impingement and hip OsteoaRthritis cohort (FORCe): Protocol for a prospective study, J Physiotherapy, 64, 1, (2018); Agricola R., Heijboer M.P., Bierma-Zeinstra S.M., Verhaar J.A., Weinans H., Waarsing J.H., Cam impingement causes osteoarthritis of the hip: A nationwide prospective cohort study (CHECK), Ann Rheum Dis, 72, 6, pp. 918-923, (2013); Kellgren J.H., Lawrence J.S., Radiological assessment of osteo-arthrosis, Ann Rheum Dis, 16, 4, pp. 494-502, (1957); Thorborg K., Tijssen M., Habets B., Et al., Patient-Reported Outcome (PRO) questionnaires for young to middle-aged adults with hip and groin disability: A systematic review of the clinimetric evidence, Br J Sports Med, 49, 12, (2015); Thorborg K., Holmich P., Christensen R., Petersen J., Roos E.M., The Copenhagen Hip and Groin Outcome Score (HAGOS): Development and validation according to the COSMIN checklist, Br J Sports Med, 45, 6, pp. 478-491, (2011); Mohtadi N.G., Griffin D.R., Pedersen M.E., Et al., The development and validation of a self-administered quality-of-life outcome measure for young, active patients with symptomatic hip disease: The international hip outcome tool (IHOT-33), Art Ther, 28, 5, pp. 595-605, (2012); King M.G., Semciw A.I., Hart H.F., Et al., Sub-elite football players with hip-related groin pain and a positive flexion, adduction, and internal rotation test exhibit distinct biomechanical differences compared with the asymptomatic side, J Orthop Sports Phys Ther, 48, 7, pp. 584-593, (2018); Rutherford D.J., Moreside J., Wong I., Differences in hip joint biomechanics and muscle activation in individuals with femoroacetabular impingement compared with healthy, asymptomatic individuals: Is level-ground gait analysis enough?, Orthop J Sports Med, 6, 5, (2018); Schache A.G., Baker R., On the expression of joint moments during gait, Gait Posture, 25, 3, pp. 440-452, (2007); Baker R., Pelvic angles: A mathematically rigorous definition which is consistent with a conventional clinical understanding of the terms, Gait Posture, 13, 1, pp. 1-6, (2001); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, J Biomech Eng, 105, 2, pp. 136-144, (1983); Cohen J., Statisticcal Power Analysis for the Behavioral Sciences, (1988); Lewis C.L., Sahrmann S.A., Moran D.W., Anterior hip joint force increases with hip extension, decreased gluteal force, or decreased iliopsoas force, J Biomech, 40, 16, pp. 3725-3731, (2007); Semciw A.I., Pizzari T., Murley G.S., Green R.A., Gluteus medius: An intramuscular EMG investigation of anterior, middle and posterior segments during gait, J Electromyogr Kinesiol, 23, 4, pp. 858-864, (2013); Semciw A.I., Green R.A., Murley G.S., Pizzari T., Gluteus minimus: An intramuscular EMG investigation of anterior and posterior segments during gait, Gait Posture, 39, 2, pp. 822-826, (2014); Lewis C.L., Khuu A., Loverro K.L., Gait alterations in femoroacetabular impingement syndrome differ by sex, J Orthop Sports Phys Ther, 48, 8, pp. 649-658, (2018); Kennedy M.J., Lamontagne M., Beaule P.E., Femoroacetabular impingement alters hip and pelvic biomechanics during gait walking biomechanics of FAI, Gait Posture, 30, 1, pp. 41-44, (2009); Kumar D., Dillon A., Nardo L., Link T.M., Majumdar S., Souza R.B., Differences in the association of hip cartilage lesions and cam-type femoroacetabular impingement with movement patterns: A preliminary study, PM R, 6, 8, pp. 681-689, (2014); Watelain E., Dujardin F., Babier F., Dubois D., Allard P., Pelvic and lower limb compensatory actions of subjects in an early stage of hip osteoarthritis, Arch Phys Med Rehabil, 82, 12, pp. 1705-1711, (2001); Constantinou M., Loureiro A., Carty C., Mills P., Barrett R., Hip joint mechanics during walking in individuals with mild-to-moderate hip osteoarthritis, Gait Posture, 53, pp. 162-167, (2017); Meyer C.A., Corten K., Fieuws S., Et al., Biomechanical gait features associated with hip osteoarthritis: Towards a better definition of clinical hallmarks, J Orthop Res, 33, 10, pp. 1498-1507, (2015); Clohisy J.C., Baca G., Beaule P.E., Et al., Descriptive epidemiology of femoroacetabular impingement: A North American cohort of patients undergoing surgery, Am J Sports Med, 41, 6, pp. 1348-1356, (2013); Weir A., Brukner P., Delahunt E., Et al., Doha agreement meeting on terminology and definitions in groin pain in athletes, Br J Sports Med, 49, 12, pp. 768-774, (2015); Herzog W., Clark A., Wu J., Resultant and local loading in models of joint disease, Arthritis Rheum, 49, 2, pp. 239-247, (2003)","M.G. King; La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Bundoora, 3086, Australia; email: m.king@latrobe.edu.au","","Lippincott Williams and Wilkins","01959131","","MSCSB","32079924","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-85088251878" "Dupré T.; Lysdal F.G.; Funken J.; Mortensen K.R.L.; Müller R.; Mayer J.; Krahl H.; Potthast W.","Dupré, Thomas (57194794521); Lysdal, Filip Gertz (57194199957); Funken, Johannes (56449278700); Mortensen, Kristian R.L. (59104597900); Müller, Ralf (56941244800); Mayer, Jan (57207403185); Krahl, Hartmut (58310508700); Potthast, Wolfgang (23035844800)","57194794521; 57194199957; 56449278700; 59104597900; 56941244800; 57207403185; 58310508700; 23035844800","Groin Injuries in Soccer: Investigating the Effect of Age on Adductor Muscle Forces","2020","Medicine and Science in Sports and Exercise","52","6","","1330","1337","7","11","10.1249/MSS.0000000000002243","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85085229946&doi=10.1249%2fMSS.0000000000002243&partnerID=40&md5=67d8c58f693a8a2ddff494b3a7d6fe74","Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany; Sport Sciences, Department of Health Science and Technology, Aalborg University, Aalborg East, Denmark; TSG 1899 Hoffenheim Fußball-Spielbetriebs GmbH, Zuzenhausen, Germany; ARCUS Clinics Pforzheim, Pforzheim, Germany","Dupré T., Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany; Lysdal F.G., Sport Sciences, Department of Health Science and Technology, Aalborg University, Aalborg East, Denmark; Funken J., Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany; Mortensen K.R.L., Sport Sciences, Department of Health Science and Technology, Aalborg University, Aalborg East, Denmark; Müller R., Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany; Mayer J., TSG 1899 Hoffenheim Fußball-Spielbetriebs GmbH, Zuzenhausen, Germany; Krahl H., Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany; Potthast W., Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany, ARCUS Clinics Pforzheim, Pforzheim, Germany","Purpose: The sudden rise in the injury incidence during adolescence is also evident in soccer-related injuries to the groin. Submaximal passing applies high stress on the adductor muscles and pubic symphysis and is therefore likely to be connected to the occurrence of groin injuries. Therefore, the purpose of the study was to compare hip joint kinematics and adductor muscle forces of different adolescent age groups during submaximal soccer passing. Methods: Sixty participants, in four groups, younger than 12, 15, 16. and 23 yr (U12, U15, U16, U23), were analyzed. A Footbonaut, equipped with a 3D motion capture system consisting of 16 cameras, was used to capture kinematic data of short passes. Inverse dynamic analysis was performed to calculate muscle forces of 10 passes of each subject. Results: The U15 group showed reduced angular velocities. A rise in hip adductor muscle forces was evident from the youngest group up to the oldest groups. The largest increase (49%) was found between U12 and U15. Lower-limb mass was identified as the best predictor for the increasing adductor force. Conclusions: The reduced angular velocities of the U15 and the increase in muscle forces between all age groups were attributed to the increasing segment masses and length. This increases the moments of inertia of the leg segments thereby demanding higher forces to accelerate the segments. Most likely, the stress put upon the adductors apophyses increases during adolescence, as tendons are known to adapt slower than muscles, increasing the risk for overuse injuries. Coaches could use lower-limb mass as an indicator for fast increases in the force demand to identify players who would benefit from a reduced training volume. Copyright © 2019 by the American College of Sports Medicine","BIOMECHANICAL PHENOMENA (MESH); FOOTBALL; GROWTH AND DEVELOPMENT (MESH); SPORTS (MESH); SPRAINS AND STRAINS (MESH); WOUNDS AND INJURIES (MESH)","Adolescent; Adolescent Development; Age Factors; Anthropometry; Biomechanical Phenomena; Child; Cross-Sectional Studies; Groin; Hip Joint; Humans; Lower Extremity; Male; Muscle, Skeletal; Pubic Symphysis; Soccer; Sprains and Strains; Time and Motion Studies; Young Adult; adolescent; adolescent development; age; anatomy and histology; anthropometry; biomechanics; child; cross-sectional study; growth, development and aging; hip; human; inguinal region; injury; lower limb; male; pathophysiology; physiology; pubis symphysis; skeletal muscle; soccer; task performance; young adult","Backous D.D., Friedl K.E., Smith N.J., Parr T.J., Carpine W.D.J.R., Soccer injuries and their relation to physical maturity, Am J Dis Child, 142, 8, pp. 839-842, (1988); Backx F.J., Erich W.B., Kemper A.B., Verbeek A.L., Sports injuries in school-aged children. An epidemiologic study, Am J Sports Med, 17, 2, pp. 234-240, (1989); Volpi P., Pozzoni R., Galli M., The major traumas in youth football, Knee Surg Sports Traumatol Arthrosc Off J ESSKA, 11, 6, pp. 399-402, (2003); Shea K.G., Pfeiffer R., Wang J.H., Curtin M., Apel P.J., Anterior cruciate ligament injury in pediatric and adolescent soccer players: an analysis of insurance data, J Pediatr Orthop, 24, 6, pp. 623-628, (2004); Lohmander L.S., Englund P.M., Dahl L.L., Roos E.M., The long-term consequence of anterior cruciate ligament and meniscus injuries, Am J Sports Med, 35, 10, pp. 1756-1769, (2007); Wilder F.V., Hall B.J., Barrett J.P., Lemrow N.B., History of acute knee injury and osteoarthritis of the knee: a prospective epidemiological assessment. The Clearwater Osteoarthritis Study, Osteoarthr Cartil, 10, 8, pp. 611-616, (2002); Whittaker J.L., Small C., Maffey L., Emery C.A., Risk factors for groin injury in sport: an updated systematic review, Br J Sports Med, 49, 12, pp. 803-809, (2015); Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: the UEFA injury study, Br J Sports Med, 45, 7, pp. 553-558, (2011); Eckard T.G., Padua D.A., Dompier T.P., Dalton S.L., Thorborg K., Kerr Z.Y., Epidemiology of hip flexor and hip adductor strains in National Collegiate Athletic Association Athletes, 2009/2010-2014/2015, Am J Sports Med, pp. 73-80, (2017); Gabbe B.J., Bailey M., Cook J.L., Et al., The association between hip and groin injuries in the elite junior football years and injuries sustained during elite senior competition, Br J Sports Med, 44, 11, pp. 799-802, (2010); Hagglund M., Walden M., Magnusson H., Kristenson K., Bengtsson H., Ekstrand J., Injuries affect team performance negatively in professional football: an 11-year follow-up of the UEFA Champions League injury study, Br J Sports Med, 47, 12, pp. 738-742, (2013); Werner J., Hagglund M., Walden M., Ekstrand J., UEFA injury study: a prospective study of hip and groin injuries in professional football over seven consecutive seasons, Br J Sports Med, 43, 13, pp. 1036-1040, (2009); Mosler A.B., Weir A., Eirale C., Et al., Epidemiology of time loss groin injuries in a men's professional football league: a 2-year prospective study of 17 clubs and 606 players, Br J Sports Med, 52, pp. 292-297, (2018); O'Connor D.M., Groin injuries in professional rugby league players: a prospective study, J Sports Sci, 22, 7, pp. 629-636, (2004); Serner A., Tol J.L., Jomaah N., Et al., Diagnosis of acute groin injuries: a prospective study of 110 athletes, Am J Sports Med, 43, 8, pp. 1857-1864, (2015); Sailly M., Whiteley R., Read J.W., Giuffre B., Johnson A., Holmich P., Pubic apophysitis: a previously undescribed clinical entity of groin pain in athletes, Br J Sports Med, 49, 12, pp. 828-834, (2015); Dupre T., Funken J., Muller R., Et al., Does inside passing contribute to the high incidence of groin injuries in soccer? A biomechanical analysis, J Sports Sci, 36, 16, pp. 1827-1835, (2018); Cunningham P.M., Brennan D., O'Connell M., MacMahon P., O'Neill P., Eustace S., Patterns of bone and soft-tissue injury at the symphysis pubis in soccer players: observations at MRI, AJR Am J Roentgenol, 188, 3, pp. W291-W296, (2007); Rahnama N., Reilly T., Lees A., Injury risk associated with playing actions during competitive soccer, Br J Sports Med, 36, 5, pp. 354-359, (2002); Vieira L.H.P., Cunha S.A., Moraes R., Et al., Kicking performance in young U9 to U20 soccer players: assessment of velocity and accuracy simultaneously, Res Q Exerc Sport, 89, 2, pp. 210-220, (2018); Katis A., Kellis E., Three-dimensional kinematics and ground reaction forces during the instep and outstep soccer kicks in pubertal players, J Sports Sci, 28, 11, pp. 1233-1241, (2010); Kapidzic A., Huremovic T., Biberovic A., Kinematic analysis of the instep kick in youth soccer players, J Hum Kinet, 42, pp. 81-90, (2014); Lund M.E., Andersen M.S., de Zee M., Rasmussen J., Scaling of musculoskeletal models from static and dynamic trials, Int Biomech, 2, 1, pp. 1-11, (2015); Alexander N., Schwameder H., Comparison of estimated and measured muscle activity during inclined walking, J Appl Biomech, 32, 2, pp. 150-159, (2016); Dupre T., Dietzsch M., Komnik I., Potthast W., David S., Agreement of measured and calculated muscle activity during highly dynamic movements modelled with a spherical knee joint, J Biomech, 84, pp. 73-80, (2019); Winter D.A., Biomechanics and Motor Control of Human Movement, (2009); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med Sci Sports Exerc, 34, 12, pp. 2028-2036, (2002); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med Sci Sports Exerc, 30, 6, pp. 917-927, (1998); Philippaerts R.M., Vaeyens R., Janssens M., Et al., The relationship between peak height velocity and physical performance in youth soccer players, J Sports Sci, 24, 3, pp. 221-230, (2006); Wild C.Y., Munro B.J., Steele J.R., How young girls change their landing technique throughout the adolescent growth spurt, Am J Sports Med, 44, 5, pp. 1116-1123, (2016); Malina R.M., Adolescent changes in size, build, composition and performance, Hum Biol, 46, 1, pp. 117-131, (1974); Tak I., Engelaar L., Gouttebarge V., Et al., Is lower hip range of motion a risk factor for groin pain in athletes? A systematic review with clinical applications, Br J Sports Med, 51, 22, pp. 1611-1621, (2017); Kanehisa H., Ikegawa S., Tsunoda N., Fukunaga T., Strength and cross-sectional areas of reciprocal muscle groups in the upper arm and thigh during adolescence, Int J Sports Med, 16, 1, pp. 54-60, (1995); Heinemeier K.M., Bjerrum S.S., Schjerling P., Kjaer M., Expression of extracellular matrix components and related growth factors in human tendon and muscle after acute exercise, Scand J Med Sci Sports, 23, 3, pp. e150-e161, (2013); Mersmann F., Bohm S., Schroll A., Boeth H., Duda G., Arampatzis A., Evidence of imbalanced adaptation between muscle and tendon in adolescent athletes, Scand J Med Sci Sports, 24, 4, pp. e283-e289, (2014); Waugh C.M., Blazevich A.J., Fath F., Korff T., Age-related changes in mechanical properties of the Achilles tendon, J Anat, 220, 2, pp. 144-155, (2012); Couppe C., Kongsgaard M., Aagaard P., Et al., Differences in tendon properties in elite badminton players with or without patellar tendinopathy, Scand J Med Sci Sports, 23, 2, pp. e89-e95, (2013); Hiti C.J., Stevens K.J., Jamati M.K., Garza D., Matheson G.O., Athletic osteitis pubis, Sports Med, 41, 5, pp. 361-376, (2011); Bult H.J., Barendrecht M., Tak I.J.R., Injury risk and injury burden are related to age group and peak height velocity among talented male youth soccer players, Orthop J Sports Med, 6, 12, pp. 1-10, (2018); Haroy J., Thorborg K., Serner A., Et al., Including the Copenhagen adduction exercise in the FIFA 11+ provides missing eccentric hip adduction strength effect in male soccer players: a randomized controlled trial, Am J Sports Med, 45, 13, pp. 3052-3059, (2017)","T. Dupré; German Sport University Cologne, Institute of Biomechanics and Orthopaedics, Cologne, Am Sportpark Müngersdorf 6, 50933, Germany; email: t.dupre@dshs-koeln.de","","Lippincott Williams and Wilkins","01959131","","MSCSB","31895302","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-85085229946" "Kolodziej M.; Nolte K.; Schmidt M.; Alt T.; Jaitner T.","Kolodziej, Mathias (57203686274); Nolte, Kevin (56416032200); Schmidt, Marcus (58722150900); Alt, Tobias (56402929600); Jaitner, Thomas (22834949800)","57203686274; 56416032200; 58722150900; 56402929600; 22834949800","Identification of Neuromuscular Performance Parameters as Risk Factors of Non-contact Injuries in Male Elite Youth Soccer Players: A Preliminary Study on 62 Players With 25 Non-contact Injuries","2021","Frontiers in Sports and Active Living","3","","615330","","","","8","10.3389/fspor.2021.615330","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85124538126&doi=10.3389%2ffspor.2021.615330&partnerID=40&md5=fb2bdd8b4b59fc22cb126bc3af16926a","Department of Strength and Conditioning and Performance, Borussia Dortmund, Dortmund, Germany; Institute for Sports and Sport Science, Technical University (TU) Dortmund University, Dortmund, Germany; Department of Biomechanics, Performance Analysis and Strength and Conditioning, Olympic Training and Testing Centre Westphalia, Dortmund, Germany","Kolodziej M., Department of Strength and Conditioning and Performance, Borussia Dortmund, Dortmund, Germany, Institute for Sports and Sport Science, Technical University (TU) Dortmund University, Dortmund, Germany; Nolte K., Institute for Sports and Sport Science, Technical University (TU) Dortmund University, Dortmund, Germany; Schmidt M., Institute for Sports and Sport Science, Technical University (TU) Dortmund University, Dortmund, Germany; Alt T., Department of Biomechanics, Performance Analysis and Strength and Conditioning, Olympic Training and Testing Centre Westphalia, Dortmund, Germany; Jaitner T., Institute for Sports and Sport Science, Technical University (TU) Dortmund University, Dortmund, Germany","Introduction: Elite youth soccer players suffer increasing numbers of injuries owing to constantly increasing physical demands. Deficits in neuromuscular performance may increase the risk of injury. Injury risk factors need to be identified and practical cut-off scores defined. Therefore, the purpose of the study was to assess neuromuscular performance parameters within a laboratory-based injury risk screening, to investigate their association with the risk of non-contact lower extremity injuries in elite youth soccer players, and to provide practice-relevant cut-off scores. Methods: Sixty-two elite youth soccer players (age: 17.2 ± 1.1 years) performed unilateral postural control exercises in different conditions, isokinetic tests of concentric and eccentric knee extension and knee flexion (60°/s), isometric tests of hip adduction and abduction, and isometric tests of trunk flexion, extension, lateral flexion and transversal rotation during the preseason period. Non-contact lower extremities injuries were documented throughout 10 months. Risk profiling was assessed using a multivariate approach utilizing a Decision Tree model [Classification and Regression Tree (CART) method]. Results: Twenty-five non-contact injuries were registered. The Decision Tree model selected the COP sway, the peak torque for knee flexion concentric, the functional knee ratio and the path of the platform in that hierarchical order as important neuromuscular performance parameters to discriminate between injured and non-injured players. The classification showed a sensitivity of 0.73 and a specificity of 0.91. The relative risk was calculated at 4.2, meaning that the risk of suffering an injury is four times greater for a player, who has been classified as injured by the Decision Tree model. Conclusion: Measuring static postural control, postural control under unstable condition and the strength of the thigh seem to enable a good indication of injury risk in elite youth soccer players. However, this finding has to be taken with caution due to a small number of injury cases. Nonetheless, these preliminary results may have practical implications for future directions in injury risk screening and in planning and developing customized training programs to counteract intrinsic injury risk factors in elite youth soccer players. Copyright © 2021 Kolodziej, Nolte, Schmidt, Alt and Jaitner.","biomechanical screening; injury prevention; neuromuscular; performance; risk factors; youth elite soccer players","","Aagaard P., Simonsen E., Trolle M., Bangsbo J., Klausen K., Isokinetic hamstring/quadriceps strength ratio: influence from joint angular velocity, gravity correction and contraction mode, Acta Physiol. Scand, 154, pp. 421-427, (1995); Abernethy L., Bleakley C., Strategies to prevent injury in adolescent sport: a systematic review, Br. J. 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Living.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85124538126" "Weast J.A.; Walton A.; Chandler B.C.; Shockley K.; Riley M.A.","Weast, Julie A. (37073995100); Walton, Ashley (57225311651); Chandler, Braylen C. (56177831400); Shockley, Kevin (57204341535); Riley, Michael A. (7203009785)","37073995100; 57225311651; 56177831400; 57204341535; 7203009785","Essential kinematic information, athletic experience, and affordance perception for others","2014","Psychonomic Bulletin and Review","21","3","","823","829","6","11","10.3758/s13423-013-0539-4","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901324983&doi=10.3758%2fs13423-013-0539-4&partnerID=40&md5=ef47916db363a59d67fd76b62d989ac3","Center for Cognition, Action, and Perception, Department of Psychology, University of Cincinnati, Cincinnati, OH, 45221-0376, ML 0376, United States","Weast J.A., Center for Cognition, Action, and Perception, Department of Psychology, University of Cincinnati, Cincinnati, OH, 45221-0376, ML 0376, United States; Walton A., Center for Cognition, Action, and Perception, Department of Psychology, University of Cincinnati, Cincinnati, OH, 45221-0376, ML 0376, United States; Chandler B.C., Center for Cognition, Action, and Perception, Department of Psychology, University of Cincinnati, Cincinnati, OH, 45221-0376, ML 0376, United States; Shockley K., Center for Cognition, Action, and Perception, Department of Psychology, University of Cincinnati, Cincinnati, OH, 45221-0376, ML 0376, United States; Riley M.A., Center for Cognition, Action, and Perception, Department of Psychology, University of Cincinnati, Cincinnati, OH, 45221-0376, ML 0376, United States","The present study investigated the role of different types of movement in affordance perception, as well as the influence of sports experience. Perception of another actor's maximum vertical jumping height and horizontal long-jumping distance was evaluated for basketball players, soccer players, and nonplayer controls after viewing point-light representations of the actors' movements. Perceptual reports were more accurate after jumping-related movements (walking and squatting) were viewed than after nonrelated movements (standing and twisting). Vertical jump reports were more accurate than horizontal jump reports. Basketball and soccer players demonstrated higher accuracy than did controls. This research establishes that point-light displays contain essential kinematic information sufficient to support accurate affordance perception, and athletes appear better attuned to kinematic information specifying affordances for others as a result of their sports experience. © 2013 Psychonomic Society, Inc.","Affordances; Kinematic information; Perceptual learning; Sports experience","Adult; Anticipation, Psychological; Athletic Performance; Basketball; Biomechanical Phenomena; Humans; Male; Motion Perception; Movement; Soccer; Social Perception; Space Perception; Young Adult; adult; anticipation; athletic performance; basketball; biomechanics; depth perception; human; male; movement (physiology); movement perception; perception; physiology; soccer; young adult","Abernethy B., Anticipation in squash: Differences in advance cue utilization between expert and novice players, Journal of Sports Science, 8, pp. 17-34, (1990); Abernethy B., Gill D.P., Parks S.L., Packer S.T., Expertise and the perception of kinematic and situational probability information, Perception, 30, pp. 233-252, (2001); Abernethy B., Neal R.J., Koning P.V., Visual-perceptual and cognitive differences between expert, intermediate, and novice snooker players, Applied Cognitive Psychology, 8, pp. 185-211, (1994); Aglioti S.M., Cesari P., Romani M., Urgesi C., Action anticipation and motor resonance in elite basketball players, Nature Neuroscience, 11, pp. 1109-1116, (2008); Calvo-Merino B., Grezes J., Glaser D.E., Passingham R.E., Haggard P., Seeing or doing? 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Ramenzoni V.C., Riley M.A., Davis T., Shockley K., Armstrong R., Tuning in to another person's action capabilities: Perceiving maximal jumping-reach height from walking kinematics, Journal of Experimental Psychology: Human Perception and Performance, 34, pp. 919-928, (2008); Ramenzoni V.C., Riley M.A., Shockley K., Davis T., An information-based approach to action understanding, Cognition, 106, pp. 1059-1070, (2008); Robertson D.G., Fleming D., Kinetics of standing broad and vertical jumping, Canadian Journal of Sports Science, 12, 1, pp. 19-23, (1987); Runeson S., On visual perception of dynamic events, Acta Universitatis Upsaliensis: Studia Psychologica Upsaliensia, (1983); Runeson S., Perception of biological motion: The KSD-Principle and the implication of a distal versus proximal approach, Perceiving Events and Objects, pp. 383-405, (1994); Sebanz N., Shiffrar M., Detecting deception in a bluffing body: The role of expertise, Psychonomic Bulletin and Review, 16, pp. 170-175, (2009); Starkes J.L., Edwards P., Dissanayake P., Dunn T., A new technology and field test of advance cue usage in volleyball, Research Quarterly for Exercise and Sport, 66, 2, pp. 162-167, (1995); Steel K.A., Adams R.D., Canning C.G., Identifying swimmers as water-polo or swim team-mates from visual displays of less than one second, Journal of Sports Sciences, 25, 11, pp. 1251-1258, (2007); Troje N.F., Decomposing biological motion: A framework for analysis and synthesis of human gait patterns, Journal of Vision, 2, 5, pp. 371-387, (2002); Warren W.H., Perceiving affordances: Visual guidance of stair climbing, Journal of Experimental Psychology: Human Perception and Performance, 10, pp. 683-703, (1984); Weast J.A., Shockley K., Riley M.A., The influence of athletic experience and kinematic information on skill-relevant affordance perception, Quarterly Journal of Experimental Psychology, 64, 4, pp. 689-706, (2011)","J. A. Weast; Center for Cognition, Action, and Perception, Department of Psychology, University of Cincinnati, Cincinnati, OH, 45221-0376, ML 0376, United States; email: weastja@mail.uc.edu","","Springer Science and Business Media, LLC","10699384","","","24243136","English","Psychonom. Bull. Rev.","Article","Final","","Scopus","2-s2.0-84901324983" "Hughes T.; Jones R.K.; Starbuck C.; Picot J.; Sergeant J.C.; Callaghan M.J.","Hughes, Tom (35191732800); Jones, Richard K. (8972539000); Starbuck, Chelsea (41762953000); Picot, Jonathan (57204705085); Sergeant, Jamie C. (38562164200); Callaghan, Michael J. (7006208379)","35191732800; 8972539000; 41762953000; 57204705085; 38562164200; 7006208379","Are tibial angles measured with inertial sensors useful surrogates for frontal plane projection angles measured using 2-dimensional video analysis during single leg squat tasks? A reliability and agreement study in elite football (soccer) players","2019","Journal of Electromyography and Kinesiology","44","","","21","30","9","8","10.1016/j.jelekin.2018.11.005","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85056787288&doi=10.1016%2fj.jelekin.2018.11.005&partnerID=40&md5=ae83372658636aa24c8490919e7d164e","Manchester United Football Club, AON Training Complex, Manchester, United Kingdom; Arthritis Research UK Centre for Epidemiology, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom; Health Sciences Research Centre, School of Health Sciences, University of Salford, Salford, United Kingdom; Centre for Biostatistics, University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom; Department of Health Professions, Manchester Metropolitan University, Manchester, United Kingdom","Hughes T., Manchester United Football Club, AON Training Complex, Manchester, United Kingdom, Arthritis Research UK Centre for Epidemiology, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom; Jones R.K., Health Sciences Research Centre, School of Health Sciences, University of Salford, Salford, United Kingdom; Starbuck C., Health Sciences Research Centre, School of Health Sciences, University of Salford, Salford, United Kingdom; Picot J., Manchester United Football Club, AON Training Complex, Manchester, United Kingdom; Sergeant J.C., Arthritis Research UK Centre for Epidemiology, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom, Centre for Biostatistics, University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom; Callaghan M.J., Manchester United Football Club, AON Training Complex, Manchester, United Kingdom, Arthritis Research UK Centre for Epidemiology, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom, Department of Health Professions, Manchester Metropolitan University, Manchester, United Kingdom","During single leg squats (SLS), tibial angle (TA) quantification using inertial measurement units (IMU) may offer a practical alternative to frontal plane projection angle (FPPA) measurement using 2-dimensional (2D) video analysis. This study determined: (i) the reliability of IMUs and 2D video analysis for TA measurement, and 2D video analysis for FPPA measurement; (ii) the agreement between IMU TA and both 2D video TA and FPPA measurements during single leg squats in elite footballers. 18 players were tested on consecutive days. Absolute TA (ATA) and relative TA (RTA) were measured with IMUs. ATA and FPPA were measured concurrently using 2D video analysis. Within-session reliability for all measurements varied across days (intraclass correlation coefficient (ICC) range = 0.27–0.83, standard error of measurement (SEM) range = 2.12–6.23°, minimal detectable change (MDC) range = 5.87–17.26°). Between-sessions, ATA reliability was good for both systems (ICCs = 0.70–0.74, SEMs = 1.64–7.53°, MDCs = 4.55–7.01°), while IMU RTA and 2D FPPA reliability ranged from poor to good (ICCs = 0.39–0.72, SEMs = 2.60–5.99°, MDCs = 7.20–16.61°). All limits of agreement exceeded a 5° acceptability threshold. Both systems were reliable for between-session ATA, although agreement was poor. IMU RTA and 2D video FPPA reliability was variable. For SLS assessment, IMU derived TAs are not useful surrogates for 2D video FPPA measures in this population. © 2018 The Authors","Accelerometer; Gyroscope; Kinematics; Knee; Lower extremity","Accelerometry; Biomechanical Phenomena; Humans; Male; Muscle Contraction; Muscle, Skeletal; Posture; Reproducibility of Results; Soccer; Video Recording; Young Adult; 2 dimensional vido analysis; analytic method; Article; body mass; chemical analysis; correlation coefficient; football player; frontal plane projection angle; human; kinematics; medical parameters; priority journal; reliability; tibial angle; accelerometry; biomechanics; body position; evaluation study; male; muscle contraction; physiology; procedures; reproducibility; skeletal muscle; soccer; standards; videorecording; young adult","Bell D.R., Padua D.A., Clark M.A., Muscle strength and flexibility characteristics of people displaying excessive medial knee displacement, Arch. Phys. Med. Rehabil., 89, pp. 1323-1328, (2008); Bland J.M., Altman D.G., Statistical methods for assessing agreement between two methods of clinical measurement, Lancet., 346, pp. 307-310, (1986); Brophy R.H., Backus S.I., Pansy B.S., Lyman S., Williams R.J., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, J. Orthop. Sports Phys. Ther., 37, pp. 260-268, (2007); Charry E., Hu W., Umer M., Ronchi A., Taylor S., Study on estimation of peak ground reaction forces using tibial accelerations in running, Intelligent Sensors, Sensor Networks and Information Processing, IEEE Eighth International Conference. Melbourne, Australia, (2013); Coppieters M., Stappaerts K., Janssens K., Jull G., Reliability of detecting 'onset of pain' and 'submaximal pain' during neural provocation testing of the upper quadrant, Physiother. Res. Int., 7, pp. 146-156, (2002); Crossley K.M., Zhang W.-J., Schache A.G., Bryant A., Cowan S.M., Performance on the single-leg squat task indicates hip abductor muscle function, Am. J. Sports Med., 39, pp. 866-873, (2011); Gwynne C.R., Curran S.A., Quantifying frontal plane knee motion during single limb squats: reliability and validity of 2-dimensional measures, Int. J. Sports Phys. Ther., 9, pp. 898-906, (2014); Herrington L., Knee valgus angle during single leg squat and landing in patellofemoral pain patients and controls, Knee, 21, pp. 514-517, (2014); Herrington L., Alenezi F., Alzhrani M., Alrayani H., Jones R., The reliability and criterion validity of 2D video assessment of single leg squat and hop landing, J. Electromyogr. Kinesiol., 34, pp. 80-85, (2017); Hollman J.H., Ginos B.E., Kozuchowski J., Vaughn A.S., Krause D., Youdas J., Relationships between knee valgus, hip-muscle strength, and hip-muscle recruitment during a single-limb step-down, J. Sport Rehabil., 18, pp. 104-117, (2009); Hu W., Charry E., Umer M., Ronchi A., Taylor S., An inertial sensor system for measurements of tibia angle with applications to knee valgus/varus detection, Intelligent Sensors, Sensor Networks and Information Processing, Ninth IEEE International Conference. Singapore, (2014); Hughes T., Sergeant J.C., Parkes M., Callaghan M.J., Prognostic factors for specific lower extremity and spinal musculoskeletal injuries identified through medical screening and training load monitoring in professional football (soccer): a systematic review, BMJ Open Sport Exerc. Med., 3, pp. 1-18, (2017); Hughes T., Sergeant J.C., van der Windt D.A., Riley R., Callaghan M.J., Periodic health examination and injury prediction in professional football (Soccer): theoretically, the prognosis is good, Sports Med., (2018); Koga H., Bahr R., Myklebust G., Engebretsen L., Grund T., Krosshaug T., Estimating anterior tibial translation from model-based image-matching of a noncontact anterior cruciate ligament injury in professional football: a case report, Clin. J. Sport Med., 21, pp. 271-274, (2011); Kottner J., Audige L., Brorson S., Donner A., Gajewski B.J., Hrobjartsson A., Et al., Guidelines for reporting reliability and agreement studies (GRRAS) were proposed, Int. J. Nurs. Stud., 48, pp. 661-671, (2011); Krosshaug T., Nakamae A., Boden B.P., Engebretsen A.H., Smith G., Slauterbeck J.R., Et al., Mechanisms of anterior cruciate ligament injury in basketball: video analysis of 39 cases, Am. J. Sports Med., 35, pp. 359-367, (2007); Levinger P., Gilleard W., Coleman C., Femoral medial deviation angle during a one-leg squat test in individuals with patellofemoral pain syndrome, Phys. Ther. Sport., 8, pp. 163-168, (2007); Liikavainio T., Bragge T., Hakkarainen M., Jurvelin J.S., Karjalainen P.A., Arokoski J.P., Reproducibility of loading measurements with skin-mounted accelerometers during walking, Arch. Phys. Med. Rehabil., 88, pp. 907-915, (2007); Luiz R., Costa A.J.L., Kale P.L., Werneck G.L., Assessment of agreement of a quantitative variable: a new graphical approach, J. Clin. Epidemiol., 56, pp. 963-967, (2003); Magee D.J., Orthopedic Physical Assessment, (2008); Munro A., Herrington L., Carolan M., Reliability of 2-dimensional video assessment of frontal plane dynamic knee valgus during common athletic screening tasks, J. Sport Rehabil., 21, pp. 7-11, (2012); Nakagawa T.H., Moriya E.T.U., Maciel C.D., Serrao F.V., Trunk, pelvis, hip, and knee kinematics, hip strength, and gluteal muscle activation during a single-leg squat in males and females with and without patellofemoral pain syndrome, J. Orthop. Sports Phys. Ther., 42, pp. 491-501, (2012); Petersen W., Rembitzki I., Liebau C., Patellofemoral pain in athletes, Open Access J. Sports Med., 8, pp. 143-154, (2017); Powers C.M., The influence of altered lower extremity kinematics on patellofemoral joint dysfunction: a theoretical perspective, J. Orthop. Sports Phys. Ther., 33, pp. 639-646, (2003); Scholtes S.A., Salsich G.B., A dynamic valgus index that combines hip and knee angles: assessment of utility in females with Patellofemoral pain, Int. J. Sports Phys. Ther., 12, pp. 333-340, (2017); Walden M., Krosshaug T., Bjorneboe J., Andersen T.E., Faul O., Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: a systematic video analysis of 39 cases, Br. J. Sports Med., 49, pp. 1452-1460, (2015); Weir J.P., Quantifying test-retest reliability using the intraclass correlation coefficient and the SEM, J. Strength Condition. Res., 19, pp. 231-240, (2005); Whatman C., Hing W., Hume P., Kinematics during lower extremity functional screening tests–are they reliable and related to jogging?, Phys. Ther. Sport, 12, pp. 22-29, (2011); Whelan D.F., O'Reilly M.A., Ward T.E., Delahunt E., Caulfield B., Technology in rehabilitation: evaluating the single leg squat exercise with wearable inertial measurement units, Methods Inform. Med., 56, pp. 88-94, (2017); Willson J.D., Davis I., Utility of the frontal plane projection angle in females with Patellofemoral pain, J. Orthop. Sports Phys. Ther., 38, pp. 606-615, (2008); Willson J.D., Ireland M.L., Davis I., Core strength and lower extremity alignment during single leg squats, Med. Sci. Sports Exerc., 38, pp. 945-952, (2006); Willy R.W., Manal K.T., Witvrouw E.E., Davis I.S., Are mechanics different between male and female runners with patellofemoral pain?, Med. Sci. Sports Exerc., 44, pp. 2165-2171, (2012); Zeller B.L., McCrory J.L., Kibler W.B., Uhl T.L., Differences in kinematics and electromyographic activity between men and women during the single-legged squat, Am. J. Sports Med., 31, pp. 449-468, (2003)","T. Hughes; Manchester United Football Club, AON Training Complex, Manchester, United Kingdom; email: tom.hughes.physio@manutd.co.uk","","Elsevier Ltd","10506411","","JEKIE","30469107","English","J. Electromyogr. Kinesiology","Article","Final","All Open Access; Green Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85056787288" "Alsubaie S.F.; Abdelbasset W.K.; Alkathiry A.A.; Alshehri W.M.; Azyabi M.M.; Alanazi B.B.; Alomereni A.A.; Asiri F.Y.","Alsubaie, Saud F. (57202578838); Abdelbasset, Walid Kamal (57208873763); Alkathiry, Abdulaziz A. (57076948900); Alshehri, Waleed M. (57208370070); Azyabi, Mohammed M. (57221710643); Alanazi, Basil B. (57221714961); Alomereni, Abdulaziz A. (57221713534); Asiri, Faisal Y. (55972070100)","57202578838; 57208873763; 57076948900; 57208370070; 57221710643; 57221714961; 57221713534; 55972070100","Anterior cruciate ligament injury patterns and their relationship to fatigue and physical fitness levels – A cross-sectional study","2021","Medicine (United States)","100","1","e24171","","","","9","10.1097/MD.0000000000024171","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85099899432&doi=10.1097%2fMD.0000000000024171&partnerID=40&md5=0670490cd3cf25c1616856e8ca7d1204","Department of Physical Therapy and Health Rehabilitation, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, Alkharj, Saudi Arabia; Department of Physical Therapy, Kasr Al-Aini Hospital, Cairo University, Giza, Egypt; Department of Physical Therapy and Health Rehabilitation, College of Applied Medical Sciences, Majmaah University, Majmaah, Saudi Arabia; Rehabilitation Sciences Department, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia; Department of Rehabilitation Medical Science, College of Applied Medical Sciences, Najran University, Najran, Saudi Arabia; Rehabilitation Sciences Department, King Khalid University, Abha, Saudi Arabia","Alsubaie S.F., Department of Physical Therapy and Health Rehabilitation, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, Alkharj, Saudi Arabia; Abdelbasset W.K., Department of Physical Therapy and Health Rehabilitation, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, Alkharj, Saudi Arabia, Department of Physical Therapy, Kasr Al-Aini Hospital, Cairo University, Giza, Egypt; Alkathiry A.A., Department of Physical Therapy and Health Rehabilitation, College of Applied Medical Sciences, Majmaah University, Majmaah, Saudi Arabia; Alshehri W.M., Rehabilitation Sciences Department, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia; Azyabi M.M., Department of Physical Therapy and Health Rehabilitation, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, Alkharj, Saudi Arabia; Alanazi B.B., Department of Physical Therapy and Health Rehabilitation, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, Alkharj, Saudi Arabia; Alomereni A.A., Department of Rehabilitation Medical Science, College of Applied Medical Sciences, Najran University, Najran, Saudi Arabia; Asiri F.Y., Rehabilitation Sciences Department, King Khalid University, Abha, Saudi Arabia","Anterior cruciate ligament (ACL) injury is one of the most common knee injuries that leads to many consequences such as early osteoarthritis and knee joint instability. To explore the association of the types of ACL tear (complete and partial) and side of injury (dominant vs nondominate) with types of playing surfaces, sports, shoes, and mechanism of injuries as well as to determine whether higher levels of fatigue and physical fitness are risk factors for complete ACL tear. This cross-sectional study used a questionnaire to collect information from young male adults with a confirmed ACL injury who were attending rehabilitation programs. The outcomes of interest were patterns of ACL injury, levels of fatigue before the injury on a 0 to 10 scale, and levels of physical fitness (hours per week). Mann–Whitney U and Kruskal Wallis tests were used to assess the differences between groups, while the odds ratios were calculated to evaluate risk factors for complete ACL tear. One hundred thirteen young male adults with a confirmed ACL injury were enrolled. Most of the reported ACL injuries in this study were complete tear (80.5%) and occurred more frequently in the dominant leg (74.6%) due to noncontact mechanism (63.6%). More ACL injuries happened while playing soccer (97.2%) on artificial turf (53.3%). The level of fatigue before ACL injury was significantly higher in partial ACL tear injuries compared to complete ACL tear injuries (P = .014). For every 1-point increase in the level of fatigue on a 0–10 scale, there was a 25% reduction in complete ACL injury risk (P = .023). The pattern of ACL types of tear and side of injury varies in different playing surfaces and mechanisms of injuries. Higher levels of fatigue seem to be associated with a partial tear of the ACL and reduction of a complete ACL tear risk factor. Copyright © 2021 the Author(s). Published by Wolters Kluwer Health, Inc.","Anterior cruciate ligament; Artificial turf; Complete tear; Fatigue; Physical fitness","Adolescent; Adult; Anterior Cruciate Ligament Injuries; Athletic Injuries; Cross-Sectional Studies; Fatigue; Female; Humans; Male; Middle Aged; Physical Fitness; Risk Factors; Saudi Arabia; Soccer; Statistics, Nonparametric; adult; anterior cruciate ligament; anterior cruciate ligament injury; anterior cruciate ligament reconstruction; Article; biomechanics; body mass; complete anterior cruciate ligament injury; controlled study; cross-sectional study; fatigue; fitness; human; injury severity; major clinical study; male; observational study; partial anterior cruciate ligament injury; physical activity; priority journal; risk factor; soccer; sport injury; adolescent; anterior cruciate ligament injury; complication; fatigue; female; fitness; injury; middle aged; nonparametric test; pathophysiology; physiology; Saudi Arabia","Weston M, Taylor KL, Batterham AM, Et al., Effects of low-volume high-intensity interval training (HIT) on fitness in adults: a meta-analysis of controlled and non-controlled trials, Sports medicine, 44, pp. 1005-1017, (2014); Bouaziz W, Lang PO, Schmitt E, Et al., Health benefits of multicomponent training programmes in seniors: a systematic review, Int J Clin Pract, 70, pp. 520-536, (2016); Bouaziz W, Vogel T, Schmitt E, Et al., Health benefits of aerobic training programs in adults aged 70 and over: a systematic review, Arch Gerontol Geriatr, 69, pp. 110-127, (2017); Thomas E, Battaglia G, Patti A, Et al., Physical activity programs for balance and fall prevention in elderly: A systematic review, Medicine (Baltimore), 98, (2019); Kaeding CC, Leger-St-Jean B, Magnussen RA., Epidemiology and Diagnosis of Anterior Cruciate Ligament Injuries, Clin Sports Med, 36, pp. 1-8, (2017); Gottlob CA, Baker CL, Pellissier JM., Cost effectiveness of anterior cruciate ligament reconstruction in young adults, Clin Orthop Relat Res, 367, pp. 272-282, (1999); Spindler KP, Wright RW., Clinical practice. Anterior cruciate ligament tear, The New England journal of medicine, 359, pp. 2135-2142, (2008); Prodromos C, Joyce B, Shi K., A meta-analysis of stability of autografts compared to allografts after anterior cruciate ligament reconstruction, Knee surgery, sports traumatology, arthroscopy: official journal of the ESSKA, 15, pp. 851-856, (2007); Ardern CL, Webster KE, Taylor NF, Et al., Return to sport following anterior cruciate ligament reconstruction surgery: a systematic review and meta-analysis of the state of play, British journal of sports medicine, 45, pp. 596-606, (2011); Lohmander LS, Englund PM, Dahl LL, Et al., The long-term consequence of anterior cruciate ligament and meniscus injuries: osteoarthritis, Am J Sports Med, 35, pp. 1756-1769, (2007); Kiapour AM, Murray MM., Basic science of anterior cruciate ligament injury and repair, Bone Joint Res, 3, pp. 20-31, (2014); Kessler MA, Behrend H, Henz S, Et al., Function, osteoarthritis and activity after ACL-rupture: 11 years follow-up results of conservative versus reconstructive treatment, Knee surgery, sports traumatology, arthroscopy: official journal of the ESSKA, 16, pp. 442-448, (2008); Trivedi V, Mishra P, Verma D., Pediatric ACL Injuries: A Review of Current Concepts, Open Orthop J, 11, pp. 378-388, (2017); Joseph AM, Collins CL, Henke NM, Et al., A multisport epidemiologic comparison of anterior cruciate ligament injuries in high school athletics, Journal of athletic training, 48, pp. 810-817, (2013); Boden BP, Dean GS, Feagin JA, Et al., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Boden BP, Sheehan FT, Torg JS, Et al., Noncontact anterior cruciate ligament injuries: mechanisms and risk factors, J Am Acad Orthop Surg, 18, pp. 520-527, (2010); Uhorchak JM, Scoville CR, Williams GN, Et al., Risk factors associated with noncontact injury of the anterior cruciate ligament: a prospective four-year evaluation of 859 West Point cadets, Am J Sports Med, 31, pp. 831-842, (2003); DeMorat G, Weinhold P, Blackburn T, Et al., Aggressive quadriceps loading can induce noncontact anterior cruciate ligament injury, Am J Sports Med, 32, pp. 477-483, (2004); Chappell JD, Creighton RA, Giuliani C, Et al., Kinematics and electromyography of landing preparation in vertical stop-jump: risks for noncontact anterior cruciate ligament injury, Am J Sports Med, 35, pp. 235-241, (2007); Simonsen EB, Magnusson SP, Bencke J, Et al., Can the hamstring muscles protect the anterior cruciate ligament during a side-cutting maneuver?, Scandinavian journal of medicine & science in sports, 10, pp. 78-84, (2000); Meyer EG, Haut RC., Excessive compression of the human tibio-femoral joint causes ACL rupture, Journal of biomechanics, 38, pp. 2311-2316, (2005); Meyer EG, Baumer TG, Slade JM, Et al., Tibiofemoral contact pressures and osteochondral microtrauma during anterior cruciate ligament rupture due to excessive compressive loading and internal torque of the human knee, Am J Sports Med, 36, pp. 1966-1977, (2008); Laible C, Sherman OH., Risk factors and prevention strategies of noncontact anterior cruciate ligament injuries, Bull Hosp Jt Dis, 72, pp. 70-75, (2014); Kizilgoz V, Sivrioglu AK, Ulusoy GR, Et al., Analysis of the risk factors for anterior cruciate ligament injury: an investigation of structural tendencies, Clin Imaging, 50, pp. 20-30, (2018); Acevedo RJ, Rivera-Vega A, Miranda G, Et al., Anterior cruciate ligament injury: identification of risk factors and prevention strategies, Current sports medicine reports, 13, pp. 186-191, (2014); Barber-Westin SD, Noyes FR., Effect of Fatigue Protocols on Lower Limb Neuromuscular Function and Implications for Anterior Cruciate Ligament Injury Prevention Training: A Systematic Review, Am J Sports Med, 45, pp. 3388-3396, (2017); Benjaminse A, Webster KE, Kimp A, Et al., Revised Approach to the Role of Fatigue in Anterior Cruciate Ligament Injury Prevention: A Systematic Review with Meta-Analyses, Sports medicine, 49, pp. 565-586, (2019); Bourne MN, Webster KE, Hewett TE., Is Fatigue a Risk Factor for Anterior Cruciate Ligament Rupture?, Sports medicine, 49, pp. 1629-1635, (2019); Robertson RJ, Goss FL, Rutkowski J, Et al., Concurrent validation of the OMNI perceived exertion scale for resistance exercise, Medicine and science in sports and exercise, 35, pp. 333-341, (2003); Utter AC, Robertson RJ, Green JM, Et al., Validation of the Adult OMNI Scale of perceived exertion for walking/running exercise, Medicine and science in sports and exercise, 36, pp. 1776-1780, (2004); Robertson RJ, Goss FL, Dube J, Et al., Validation of the adult OMNI scale of perceived exertion for cycle ergometer exercise, Medicine and science in sports and exercise, 36, pp. 102-108, (2004); Faul F, Erdfelder E, Lang AG, Et al., G∗Power 3: a flexible statistical power analysis program for the social, behavioral, and biomedical sciences, Behav Res Methods, 39, pp. 175-191, (2007); Temponi EF, de Carvalho Junior LH, Sonnery-Cottet B, Et al., Partial tearing of the anterior cruciate ligament: diagnosis and treatment, Rev Bras Ortop, 50, pp. 9-15, (2015); Lamar DS, Bartolozzi AR, Freedman KB, Et al., Thermal modification of partial tears of the anterior cruciate ligament, Arthroscopy: the journal of arthroscopic & related surgery: official publication of the Arthroscopy Association of North America and the International Arthroscopy Association, 21, pp. 809-814, (2005); Arendt E, Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. NCAA data and review of literature, Am J Sports Med, 23, pp. 694-701, (1995); Ruedl G, Webhofer M, Helle K, Et al., Leg dominance is a risk factor for noncontact anterior cruciate ligament injuries in female recreational skiers, Am J Sports Med, 40, pp. 1269-1273, (2012); Steffen K, Andersen TE, Bahr R., Risk of injury on artificial turf and natural grass in young female football players, British journal of sports medicine, 41, pp. 33-37, (2007); Dragoo JL, Braun HJ, Harris AH., The effect of playing surface on the incidence of ACL injuries in National Collegiate Athletic Association American Football, Knee, 20, pp. 191-195, (2013)","S.F. Alsubaie; Department of Physical Therapy and Health Rehabilitation, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, Alkharj, Saudi Arabia; email: s.alsubaie@psau.edu.sa","","Lippincott Williams and Wilkins","00257974","","MEDIA","33429801","English","Medicine","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85099899432" "Rutkowska-Kucharska A.","Rutkowska-Kucharska, Alicja (56967068800)","56967068800","Asymmetry of lower limb strength and jumping ability of young soccer players","2020","Acta of Bioengineering and Biomechanics","22","1","","","","","11","10.37190/ABB-01513-2019-03","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85082464206&doi=10.37190%2fABB-01513-2019-03&partnerID=40&md5=f8bf4612dc7227ae40bd1a6307ff2957","University School of Physical Education in Wroclaw, Department of Biomechanics, Wroclaw, Poland","Rutkowska-Kucharska A., University School of Physical Education in Wroclaw, Department of Biomechanics, Wroclaw, Poland","Purpose: The aim of this study was to evaluate the potential correlation between asymmetry of lower limb muscle torque, asymmetry of vertical ground reaction force during take-off in young soccer players and their jumping abilities. Methods: Twenty-three young soccer player (16.9±0.64 years old) participated in measurements. An isokinetic dynamometer, the Biodex System, was applied to test muscle torque (PT) of the knee flexors and extensors. The vertical ground reaction force (vGRF) was recorded from two Kistler plates. Jumping abilities were assessed with the horizontal (HJ) and vertical jump (VJ) tests. The asymmetry index (AI) was used to assess the asymmetry of the limbs. Results: The asymmetry index showed the highest asymmetry (over 10%) for the PT under static conditions for knee flexors and extensors. The correlation (-0.432, p=0.038) was found between the asymmetry of vGRF and the height of the VJ. There was no correlation between the muscle torque and the height of the vertical jump. However, a correlation between the HJ length and muscle torque for flexors and extensors of the right and left lower limb was found. Conclusions: The asymmetry of the muscle torque of the flexors and extensors of the knee joint does not correlate with the results of both jumping ability tests. There was a statistically significant correlation between the vGRF asymmetry index during take-off and the height of the VJ. In the HJ, such a relationship was not found. © 2020, Institute of Machine Design and Operation. All rights reserved.","GRF; Jumping tests; Muscle torque","Adolescent; Athletes; Biomechanical Phenomena; Humans; Leg; Locomotion; Lower Extremity; Muscle Strength; Soccer; Statistics, Nonparametric; Torque; adolescent; athlete; biomechanics; human; leg; locomotion; lower limb; muscle strength; nonparametric test; physiology; soccer; torque","Bishop C., Read P., Shyam C., Turner A., Asymmetries of the lower limb: The calculation conundrum in strength training and conditioning, Strength. Cond. 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Cond. Res., 29, 3, pp. 661-671, (2015); Fousekis K., Tsepis E., Vagenas G., Lower limb strength in professional soccer players: Profile, asymmetry, and training age, J. Sports Sci. Med., 9, 3, pp. 364-373, (2010); Gajewski J., Michalski R., Busko K., Mazur-Rozycka J., Staniak Z., Countermovement depth – a variable which clarifies the relationship between the maximum power output and height of a vertical jump, Acta Bioeng. Biomech, 20, 1, pp. 127-134, (2018); Hamilton R.T., Shultz S.J., Schmitz R.J., Perrin D.H., Triple-Hop distance as a valid predictor of lower limb strength and power, J. Athl. Train., 43, 2, pp. 144-151, (2008); Hewit J., Cronin J., Hume P., Multidirectional leg asymmetry assessment in sport, Strength Cond. J., 34, 1, pp. 83-86, (2012); Hoffman J., Ratamess N., Klatt M., Faigenbaum A., Kang J., Do bilateral power deficits influence direction-specific movement patterns?, Res. Sports Med., 15, pp. 125-132, (2007); Maly T., Zahalka F., Mala L., Isokinetic strength, ipsilateral and bilateral ratio of peak muscle torque in knee flexors and extensors in elite young soccer players, Acta Kinesiologica, 4, 2, (2010); Maulder P., Cronin J., Horizontal and vertical jump assessment: Reliability, symmetry, discriminative and predictive ability, Physical Therapy in Sport, 6, pp. 74-82, (2005); Meylan C., McMaster T., Cronin J., Mohammad N.I., Rogers C., Deklar M., Single leg lateral, horizontal, and vertical jump assessment: Reliability, interrelationships and ability to predict sprint and change-of direction performance, J. Strength Cond. Res, 23, 4, pp. 1140-1147, (2009); Nagano A., Komura T., Fukashiro S., Optimal coordination of maximal-effort horizontal and vertical jump motions – a computer simulation study, Biomed. Engin. 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Sports Scie., 34, 6, pp. 542-548, (2016); Rutkowska-Kucharska A., Szpala A., The use of electromyography and magnetic resonance imaging to evaluate a core strengthening exercise programme, J. Back Musculoskele.T Rehabil., 31, pp. 355-362, (2018); Schiltz M., Lehance C., Maquet D., Bury T., Crierlaard J., Croisier J., Explosive strength imbalances in professional basketball players, J. Athl. Train., 44, pp. 39-47, (2009); Sliwowski R., Grygorowicz M., Wieczorek A., Jadczak L., The relationship between jumping performance, isokinetic strength and dynamic postural control in elite youth soccer player,, J. Sports Med. Phys. Fitness, 58, 9, pp. 1226-1233, (2019); Turner A., Walker S., Stembridge M., Coneyworth P., Reed G., Birdsey L., Barter P., Moody J., A testing battery for the assessment of fitness in soccer players, Strength Cond. J., 33, 5, pp. 29-39, (2011); Yanci J., Arcos A.L., Mendiguchia J., Brugheei M., Relationships between sprinting, agility, one-and two-leg vertical and horizontal jump in soccer players, Kinesiology, 46, 2, pp. 194-201, (2014); Zakas A., Bilateral isokinetic peak torque of quadriceps and hamstring muscles in professional soccer players with dominance on one or both two sides, J. Sports Med. Phys. Fitness, 46, 1, pp. 28-35, (2006)","A. Rutkowska-Kucharska; Department of Biomechanics, University School of Physical Education in Wroclaw, Wroclaw, al. I.J. Paderewskiego 35, 51-612, Poland; email: alicja.rutkowska-kucharska@awf.wroc.pl","","Institute of Machine Design and Operation","1509409X","","","32307464","English","Acta Bioeng. Biomech.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-85082464206" "Setuain I.; Lecumberri P.; Izquierdo M.","Setuain, Igor (44061926500); Lecumberri, Pablo (6506853386); Izquierdo, Mikel (7103111881)","44061926500; 6506853386; 7103111881","Sprint mechanics return to competition follow-up after hamstring injury on a professional soccer player: A case study with an inertial sensor unit based methodological approach","2017","Journal of Biomechanics","63","","","186","191","5","10","10.1016/j.jbiomech.2017.08.010","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85028356642&doi=10.1016%2fj.jbiomech.2017.08.010&partnerID=40&md5=0801912862ef76fb53f8da10d84be16e","Public University of Navarra, Department of Health Sciences, Tudela, Spain; TDN, Orthopaedic Surgery and Advanced Rehabilitation, Pamplona, Spain; Movalsys Movement Analysis Solutions, Pamplona, Spain","Setuain I., Public University of Navarra, Department of Health Sciences, Tudela, Spain, TDN, Orthopaedic Surgery and Advanced Rehabilitation, Pamplona, Spain; Lecumberri P., Movalsys Movement Analysis Solutions, Pamplona, Spain; Izquierdo M., Public University of Navarra, Department of Health Sciences, Tudela, Spain","Background: The present research aimed to describe an inertial unit (IU)-based sprint mechanics evaluation model for assessing players’ readiness to return to competition after suffering a grade I hamstring injury. Methods: A professional male football player (age 19 years; height 177 cm; weight 70 kg, midfielder, Spanish, 3° Division) with a grade 1 biceps femoris injury was evaluated at pre-season, at return to play after injury and at the end of the competitive season. Sprint mechanics were analyzed via the use of an inertial orientation tracker (Xsens Technologies B.V. Enschede, Netherlands) attached over the L3-L4 region of the subject's lumbar spine. Sprint mechanics such as horizontal components of ground reaction force were assessed in both legs during sprinting actions. Findings and interpretation: Both the coefficient of the horizontal force application (SFV) and the ratio of forces (DRF) applied at increasing velocity were decreased in the injured limb compared with the contralateral healthy limb at the return to play evaluation (73% and 76% reductions, respectively) and returned to symmetrical levels at the end-season evaluation. © 2017 Elsevier Ltd","Biomechanics; Functional evaluation; Return to play","Athletic Injuries; Follow-Up Studies; Hamstring Muscles; Humans; Male; Recovery of Function; Running; Soccer; Treatment Outcome; Young Adult; Biomechanics; Biophysics; Sports; Evaluation modeling; Football players; Functional evaluation; Ground reaction forces; Horizontal forces; Inertial sensor; Methodological approach; Return to play; acceleration; adult; Article; biomechanics; case report; case study; clinical article; follow up; football player; functional assessment; ground reaction force; hamstring muscle; human; inertial sensor unit; lumbar spine; male; muscle injury; priority journal; return to sport; running; soccer player; Spaniard; sprint mechanics; task performance; young adult; convalescence; hamstring muscle; injuries; pathophysiology; running; soccer; sport injury; treatment outcome; Mechanics","Bezodis I.N., Kerwin D.G., Salo A.I., Lower-limb mechanics during the support phase of maximum-velocity sprint running, Med. Sci. Sports Exerc., 40, pp. 707-715, (2008); Bonnet V., Mazza C., Fraisse P., Cappozzo A., Real-time estimate of body kinematics during a planar squat task using a single inertial measurement unit, IEEE Trans. Biomed. Eng., 60, pp. 1920-1926, (2013); Brughelli M., Cronin J., Mendiguchia J., Kinsella D., Nosaka K., Contralateral leg deficits in kinetic and kinematic variables during running in Australian rules football players with previous hamstring injuries, J. Strength Cond. Res., 24, pp. 2539-2544, (2010); Buchheit M., The numbers will love you back in return-I promise, Int. J. Sports Physiol. Perform., 11, pp. 551-554, (2016); Cavagna G.A., Komarek L., Mazzoleni S., The mechanics of sprint running, J. 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Phys., 69, pp. 1198-1204, (2001); Mendiguchia J., Edouard P., Samozino P., Brughelli M., Cross M., Ross A., Gill N., Morin J.B., Field monitoring of sprinting power-force-velocity profile before, during and after hamstring injury: two case reports, J. Sports Sci., 34, pp. 535-541, (2016); Mendiguchia J., Samonzino P., Martinez-Ruiz E., Brughelli M., Schmikli M., Morin J.B., Mendez-Villanueva A., Progression on mechanical properties during on the field sprint running and returning to sports from a hamstring muscle injury in soccer players, Int. J. Sports Med., 35, 8, pp. 690-695, (2014); Mero A.A., Komi P.V., Electromyographic activity in sprinting at speeds ranging from sub-maximal to supra-maximal, Med. Sci. Sports Exerc., 19, pp. 266-274, (1987); Millor N., Lecumberri P., Gomez M., Martinez-Ramirez A., Izquierdo M., Drift-free position estimation for periodic movements using inertial units, IEEE J. Biomed. Health Inform., 18, pp. 1131-1137, (2014); Morin J.B., Gimenez P., Edouard P., Arnal P., Jimenez-Reyes P., Samonzino P., Brughelli M., Mendiguchia J., Sprint acceleration mechanics: the major role of hamstrings in horizontal force production, Front. Physiol., 6, (2015); Patterson M.R., Delahunt E., A diagonal landing task to assess dynamic postural stability in ACL reconstructed females, Knee, 20, pp. 532-536, (2013); Rabita G., Dorel S., Slawinski J., Peyrot N., Saez de Villareal E., Morin J.B., Sprint mechanics in world-class athletes: a new insight into the limits of human locomotion, Scand. J. Med. Sci. Sports, 25, pp. 583-594, (2015); Requena B., Garcia I., Requena F., Saez-de Villareal V., Paasuke M., Reliability and validity of a wireless microelectromechanicals based system (keimove) for measuring vertical jumping performance, J. Sports Sci. Med., 11, pp. 115-122, (2012); Samozino P., Rabita G., Dorel S., Slawinski J., Peyrot N., Saez de Villareal E., Morin J.B., A simple method for measuring power, force, velocity properties, and mechanical effectiveness in sprint running, Scand. J. Med. Sci. Sports, 26, pp. 648-658, (2016); Setuain I., Martinikorena J., Gonzalez-Izal M., Martinez-Ramirez A., Gomez M., Alfaro-Adrian J., Izquierdo M., Vertical jumping biomechanical evaluation through the use of an inertial sensor-based technology, J. Sports Sci., 34, pp. 843-851, (2016); Setuain I., Lecumberri P., Ahtiainen J.P., Mero A.A., Hakkinen K., Izquierdo M., (2017); Thelen D.G., Chumanov E.S., Hoerth D.M., Best T.M., Swanson S.C., Lil L., Young M., Heiderscheit B.C., Hamstring muscle kinematics during treadmill sprinting, Med. Sci. Sports Exerc., 37, pp. 108-114, (2005); Weyand P.G., Sternlight D.B., Bellizzi M.J., Wright S., Faster top running speeds are achieved with greater ground forces not more rapid leg movements, J. Appl. Physiol., 2000, 89, pp. 1991-1999, (1985); Zebis M.K., Bencke J., Andersen L.L., Alkjaer T., Suetta C., Mortensen P., Kjaer M., Aagaard P., Acute fatigue impairs neuromuscular activity of anterior cruciate ligament-agonist muscles in female team handball players, Scand. J. Med. Sci. Sports, 21, 6, pp. 833-840, (2011)","M. Izquierdo; Department of Health Sciences, Public University of Navarra, Tudela, Campus of Tudela, Av. de Tarazona s/n, 31500, Spain; email: mikel.izquierdo@gmail.com","","Elsevier Ltd","00219290","","JBMCB","28844725","English","J. Biomech.","Article","Final","","Scopus","2-s2.0-85028356642" "Niinimäki S.; Narra N.; Härkönen L.; Abe S.; Nikander R.; Hyttinen J.; Knüsel C.J.; Sievänen H.","Niinimäki, Sirpa (37662123400); Narra, Nathaniel (23976753600); Härkönen, Laura (25721995200); Abe, Shinya (56849819400); Nikander, Riku (8299715300); Hyttinen, Jari (35515938800); Knüsel, Christopher J. (6602347979); Sievänen, Harri (7005525254)","37662123400; 23976753600; 25721995200; 56849819400; 8299715300; 35515938800; 6602347979; 7005525254","Do bone geometric properties of the proximal femoral diaphysis reflect loading history, muscle properties, or body dimensions?","2019","American Journal of Human Biology","31","4","e23246","","","","8","10.1002/ajhb.23246","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85064702174&doi=10.1002%2fajhb.23246&partnerID=40&md5=fd97a87a33dd0be0f4474cfc91350ef5","Archaeology, University of Oulu, Oulu, Finland; Department of Electronics and Communications Engineering, BioMediTech, Tampere University of Technology, Tampere, Finland; Aquatic population dynamics Natural Resources Institute Finland (Luke), Oulu, Finland; Laboratory of Civil Engineering, Tampere University of Technology, Tampere, Finland; Department of Health Sciences, University of Jyväskylä, Jyväskylä, Finland; GeroCenter Foundation for Aging Research and Development, Jyväskylä, Finland; Jyväskylä Central Hospital, Jyväskylä, Finland; De la Préhistoire à l'Actuel: Culture, Environnement, et Anthropologie (PACEA), Université de Bordeaux, Bordeaux, France; The UKK Institute for Health Promotion Research, Tampere, Finland","Niinimäki S., Archaeology, University of Oulu, Oulu, Finland; Narra N., Department of Electronics and Communications Engineering, BioMediTech, Tampere University of Technology, Tampere, Finland; Härkönen L., Aquatic population dynamics Natural Resources Institute Finland (Luke), Oulu, Finland; Abe S., Laboratory of Civil Engineering, Tampere University of Technology, Tampere, Finland; Nikander R., Department of Health Sciences, University of Jyväskylä, Jyväskylä, Finland, GeroCenter Foundation for Aging Research and Development, Jyväskylä, Finland, Jyväskylä Central Hospital, Jyväskylä, Finland; Hyttinen J., Department of Electronics and Communications Engineering, BioMediTech, Tampere University of Technology, Tampere, Finland; Knüsel C.J., De la Préhistoire à l'Actuel: Culture, Environnement, et Anthropologie (PACEA), Université de Bordeaux, Bordeaux, France; Sievänen H., The UKK Institute for Health Promotion Research, Tampere, Finland","Objectives: The aim of this study was to investigate activity-induced effects from bone geometric properties of the proximal femur in athletic vs nonathletic healthy females by statistically controlling for variation in body size, lower limb isometric, and dynamic muscle strength, and cross-sectional area of Musculus gluteus maximus. Methods: The material consists of hip and proximal thigh magnetic resonance images of Finnish female athletes (N = 91) engaged in either high jump, triple jump, soccer, squash, powerlifting, endurance running or swimming, and a group of physically active nonathletic women (N = 20). Cross-sectional bone geometric properties were calculated for the lesser trochanter, sub-trochanter, and mid-shaft of the femur regions. Bone geometric properties were analyzed using a general linear model that included body size, muscle size, and muscle strength as covariates. Results: Body size and isometric muscle strength were positively associated with bone geometric properties at all three cross-sectional levels of the femur, while muscle size was positively associated with bone properties only at the femur mid-shaft. When athletes were compared to nonathletic females, triple jump, soccer, and squash resulted in greater values in all studied cross-sections; high jump and endurance running resulted in greater values at the femoral mid-shaft cross-section; and swimming resulted in lower values at sub-trochanter and femur mid-shaft cross-sections. Conclusions: Activity effects from ground impact loading were associated with higher bone geometric values, especially at the femur mid-shaft, but also at lesser and sub-trochanter cross-sections. Bone geometric properties along the femur can be used to assess the mechanical stimuli experienced, where ground impact loading seems to be more important than muscle loading. © 2019 Wiley Periodicals, Inc.","","Adult; Anthropometry; Athletes; Biomechanical Phenomena; Diaphyses; Female; Femur; Finland; Hip; Humans; Magnetic Resonance Imaging; Male; Muscle, Skeletal; Thigh; Young Adult; adult; anatomy and histology; anthropometry; athlete; biomechanics; diaphysis; female; femur; Finland; hip; human; male; nuclear magnetic resonance imaging; physiology; skeletal muscle; thigh; young adult","Abe S., Narra N., Nikander R., Hyttinen J., Kouhia R., Sievanen H., Exercise loading history and femoral neck strength in a sideways fall: A three-dimensional finite element modeling study, Bone, 92, pp. 9-17, (2016); Andreoli A., Monteleone M., Van Loan M., Promenzio L., Tarantino U., de Lorenzo A., Effects of different sports on bone density and muscle mass in highly trained athletes, Medicine & Science in Sports & Exercise, 33, pp. 507-511, (2001); Ball K., Loading and performance of the support leg in kicking, Journal of Science and Medicine in Sport, 16, pp. 455-459, (2013); Blanksby B.A., Gathercole D.G., Marshall R.N., Force plate and video analysis of the tumble turn by age-group swimmers, Journal of Swimming Research, 11, pp. 40-45, (1996); Bramble D.M., Lieberman D.E., Endurance running and the evolution of Homo, Nature, 18, pp. 345-352, (2004); Brianza S.Z.M., D'Amelio P., Pugno N., Delise M., Bignardi C., Isaia G., Allometric scaling and biomechanical behaviour of the bone tissue: An experimental intraspecific investigation, Bone, 40, pp. 1635-1642, (2007); Brown C., Wilmore J.H., The effects of maximal resistance training on the strength and body composition of women athletes, Medicine & Science in Sports & Exercise, 6, pp. 174-177, (1974); Buford T.W., Rossi S.J., Smith D.B., Warren A.J., A comparison of periodization models during nine weeks with equated volume and intensity for strength, Journal of Strength and Conditioning Reseach, 21, pp. 1245-1250, (2007); Burr D.B., Muscle strength, bone mass, and age-related bone loss, Journal of Bone and Mineral al Research, 12, pp. 1547-1551, (1997); Chilibeck P.D., Calder A.W., Sale D.G., Webber C.E., A comparison of strength and muscle mass increases during resistance training in young women, European Journal of Applied Physiology, 77, pp. 170-175, (1998); Daly R., The effect of exercise on bone mass and structural geometry during growth, Medicine and Sport Science, 51, pp. 33-49, (2007); Daly R.M., Saxon L., Turner C.H., Robling A.G., Bass S.L., The relationship between muscle size and bone geometry during growth and in response to exercise, Bone, 34, pp. 281-287, (2004); Davies T.G., Stock J.T., The influence of relative body breadth on the diaphyseal morphology of the human lower limb, American Journal of Human Biology, 26, pp. 822-835, (2014); Dayakidis M.K., Boudolos K., Ground reaction force data in functional ankle instability during two cutting movements, Clinical biomechanics, 21, pp. 405-411, (2006); Duchateau J., Hainaut K., Isometric or dynamic training: Differential effects on mechanical properties of a human muscle, Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology, 56, 2, pp. 296-301, (1984); Duncan G.S., Blimke C.R.J., Cowell C.T., Burke S.T., Briody J.N., Howman-Giles R., Bone and mineral al density in adolescent female athletes: Relationship to exercise type and muscle strength, Medicine and Science in Sports and Exercise, 34, 2, pp. 286-294, (2002); Feik S.A., Thomas C.D.L., Clement J.G., Age trends in remodeling of the femoral midshaft differ between the sexes, Journal of Orthopaedic Research, 14, pp. 590-597, (1996); Forwood M.R., Burr D.B., Physical activity and bone mass: Exercises in futility?, Bone and Mineral, 21, pp. 89-112, (1993); Frontera W.R., Hughes V.A., Lutz K.J., Evans W.J., A cross-sectional study of muscle strength and muscle mass in 45- to 78-yr-old men and women, Journal of Applied Physiology, 71, pp. 644-650, (1991); Frost H.M., Bone “mass” and the “mechanostat”. 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Niinimäki; Archaeology, University of Oulu, Oulu, Finland; email: sirpa.niinimaki@oulu.fi","","Wiley-Liss Inc.","10420533","","AJHUE","31004392","English","Am. J. Human Biol.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85064702174" "Hasan U.C.H.; Silva R.; Clemente F.M.","Hasan, Uday C.H. (57213354123); Silva, Rui (57194473774); Clemente, Filipe Manuel (57209913336)","57213354123; 57194473774; 57209913336","Weekly variations of biomechanical load variables in professional soccer players: Comparisons between playing positions","2021","Human Movement","22","3","","19","34","15","10","10.5114/hm.2021.100321","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107429477&doi=10.5114%2fhm.2021.100321&partnerID=40&md5=26a6be66fa1921068fbd01b7f57f661f","Department of Physical Education and Sports Sciences, Al-Kitab University, Kirkuk, Iraq; Escola Superior Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal; Instituto de Telecomunicações, Delegação da Covilhã, Lisbon, Portugal","Hasan U.C.H., Department of Physical Education and Sports Sciences, Al-Kitab University, Kirkuk, Iraq; Silva R., Escola Superior Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal; Clemente F.M., Escola Superior Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal, Instituto de Telecomunicações, Delegação da Covilhã, Lisbon, Portugal","Purpose. The purpose of the present study was fourfold: (i) to describe the weekly variations of acute external load measures during a professional soccer season; (ii) to analyse the variability of external load measures within weeks; (iii) to analyse the acute:chronic workload ratio of players during the process; and (iv) to analyse the differences of external load measures between playing positions. Methods. Twenty professional soccer players (age: 24.9 ± 3.5 years; body mass: 71.6 ± 18.7 kg; height: 168.8 ± 41.4 cm) from the same team competing in the First Portuguese League (Europe) voluntarily participated in this study. They were daily monitored with a Global Positioning System (GPS) and the following external load variables were extracted per session: (i) total distance; (ii) running distance; (iii) high-speed running distance; (iv) distance at maximal speed; (v) distance at high accelerations; and (vi) players' training load. The acute load and acute:chronic workload ratio were weekly calculated for each of the GPS measures. Results. Week-by-week variations ranged from -57% to +115%, depending on the playing position and the variable measured. The within-week variability revealed coefficients of variation between 48% and 55%, depending on the measure. Considering the differences in mean load between playing positions, significant differences between players were found for the majority of the variables, with the only exceptions being maximal speed and high accelerations distances. Conclusions. Great between-week variations in the acute load as well as the variability of load within weeks were found. It was observed that acute load was position-dependent. © University School of Physical Education in Wroclaw","Association football; External load; Performance; Periodization; Training load","acceleration; adult; article; Europe; football; global positioning system; human; running; season; soccer player; workload; young adult","Gabbett TJ, Nassis GP, oetter E, Pretorius J, Johnston N, Medina D, Et al., The athlete monitoring cycle: a practical guide to interpreting and applying training monitoring data, br J Sports Med, 51, 20, pp. 1451-1452, (2017); Lambert MI, borresen J., Measuring training load in sports, Int J Sports Physiol Perform, 5, 3, pp. 406-411, (2010); Halson SL., Monitoring training load to understand fatigue in athletes, Sports Med, 44, pp. 139-147, (2014); bourdon PC, Cardinale M, Murray A, Gastin P, Kellmann M, Varley MC, Et al., Monitoring athlete training loads: consensus statement, Int J Sports Physiol Perform, 12, (2017); Carling C, bradley P, McCall A, Dupont G., Match-to-match variability in high-speed running activity in a professional soccer team, J Sports Sci, 34, 24, pp. 2215-2223, (2016); Hoppe MW, baumgart C, Slomka M, Polglaze T, Freiwald J., Variability of metabolic power data in elite soccer players during pre-season matches, J Hum Kinet, 58, 1, pp. 233-245, (2017); Jeong T-S, reilly T, Morton J, bae S-W, Drust b., Quantification of the physiological loading of one week of “pre-season” and one week of “in-season” training in professional soccer players, J Sports Sci, 29, 11, pp. 1161-1166, (2011); Clemente FM, rabbani A, Ferreira r, Araujo JP., Drops in physical performance during intermittent small-sided and conditioned games in professional soccer players, HumMov, 21, 1, pp. 7-14, (2020); Clemente FM, Sarmento H., The effects of small-sided soccer games on technical actions and skills: a systematic review, Hum Mov, 21, 3, pp. 100-119, (2020); Castellano J, blanco-Villasenor A, Alvarez D., Contextual variables and time-motion analysis in soccer, Int J SportsMed, 32, 6, pp. 415-421, (2011); Santos PM, Lago-Penas C., Defensive positioning on the pitch in relation with situational variables of a professional football team during regaining possession, Hum Mov, 20, 2, pp. 50-56, (2019); Lacome M, Simpson bM, Cholley Y, Lambert P, buchheit M., Small-sided games in elite soccer: does one size fit all?, Int J Sports Physiol Perform, 13, 5, pp. 568-576, (2018); Clemente FM., The threats of small-sided soccer games: a discussion about their differences with the match external load demands and their variability levels, Strength Cond J; Clemente FM, rabbani A, Conte D, Castillo D, Afonso J, Truman Clark CC, Et al., Training/match external load ratios in professional soccer players: a full-season study, Int J Environ res Public Health, 16, 17, (2019); Paul DJ, bradley PS, Nassis GP., Factors affecting match running performance of elite soccer players: shedding some light on the complexity, Int J Sports Physiol Perform, 10, 4, pp. 516-519, (2015); rago V, Silva Jr, Mohr M, barreira D, Krustrup P, rebelo AN., Variability of activity profile during medium-sided games in professional soccer, J Sports Med Phys Fitness, 59, 4, pp. 547-554, (2019); Clemente FM, rabbani A, Kargarfard M, Nikolaidis PT, rosemann T, Knechtle b., Session-to-session variations of external load measures of youth soccer players in medium-sided games, Int J Environ res Public Health, 16, 19, (2019); Clemente FM, Silva AF, Clark CCT, Conte D, ribeiro J, Mendes b, Et al., Analyzing the seasonal changes and relationships in training load and wellness in elite volleyball players, Int J Sports Physiol Perform, 15, 5, pp. 731-740, (2020); Malone S, owen A, Newton M, Mendes b, Collins KD, Gabbett TJ., The acute:chronic workload ratio in relation to injury risk in professional soccer, J Sci Med Sport, 20, 6, pp. 561-565, (2017); Hulin bT, Gabbett TJ, blanch P, Chapman P, bailey D, orchard JW., Spikes in acute workload are associated with increased injury risk in elite cricket fast bowlers, br J Sports Med, 48, 8, pp. 708-712, (2014); Malone JJ, Di Michele r, Morgans r, burgess D, Morton JP, Drust b., Seasonal training-load quantification in elite English Premier League soccer players, Int J Sports Physiol Perform, 10, 4, pp. 489-497, (2015); Dalen T, Ingebrigtsen J, Ettema G, Hjelde GH, Wisloff U., Player load, acceleration, and deceleration during forty-five competitive matches of elite soccer, J Strength Cond res, 30, 2, pp. 351-359, (2016); baptista I, Johansen D, Figueiredo P, rebelo A, Pettersen SA., Positional differences in peak- and accumulated-training load relative to match load in elite football, Sports, 8, 1, (2019); Nikolaidis PT, Clemente FM, van der Linden CMI, rosemannT Knechtleb, Validityandreliabilityof10-Hz global positioning system to assess in-line movement and change of direction, Front Physiol, 9, (2018); Gabbett TJ., The training-injury prevention paradox: should athletes be training smarter and harder?, br J Sports Med, 50, 5, pp. 273-280, (2016); Cohen J., Statistical power analysis for the behavioral sciences, (2013); batterham AM, Hopkins WG., Making meaningful inferences about magnitudes, Int J Sports Physiol Perform, 1, 1, pp. 50-57, (2006); Fessi MS, Nouira S, Dellal A, owen A, Elloumi M, Moalla W., Changes of the psychophysical state and feeling of wellness of professional soccer players during pre-season and in-season periods, res Sports Med, 24, 4, pp. 375-386, (2016); Clemente FM, Clark C, Castillo D, Sarmento H, Nikolaidis PT, rosemann T, Et al., Variations of training load, monotony, and strain and dose-response relationships with maximal aerobic speed, maximal oxygen uptake, and isokinetic strength in professional soccer players, PLoS one, 14, 12, (2019); 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Powers SK, Howley ET., Exercise physiology: theory and application to fitness and performance, (2014); Gabbett TJ., Debunking the myths about training load, injury and performance: empirical evidence, hot topics and recommendations for practitioners, br J Sports Med, 54, 1, pp. 58-66, (2020); Foster C., Monitoring training in athletes with reference to overtraining syndrome, Med Sci Sports Exerc, 30, 7, pp. 1164-1168, (1998); owen AL, Lago-Penns C, Gomez MA, Mendes b, Dellal A., Analysis of a training mesocycle and positional quantification in elite European soccer players, Int J Sports Sci Coach, 12, 5, pp. 665-676, (2017); Enright K, Green M, Hay G, Malone JJ., Workload and injury in professional soccer players: role of injury tissue type and injury severity, Int J Sports Med, 41, 2, pp. 89-97, (2020); bowen L, Gross AS, Gimpel M, bruce-Low S, Li FX., Spikes in acute:chronic workload ratio (ACWr) associated with a 5-7 times greater injury rate in English Premier League football players: a comprehensive 3-year study, br J Sports Med, 54, 12, pp. 731-738, (2020); Martin-Garcia A, Gomez Diaz A, bradley PS, Morera F, Casamichana D., Quantification of a professional football team's external load using a microcycle structure, J Strength Cond res, 32, 12, pp. 3511-3518, (2018); Dellal A, Wong DP, Moalla W, Chamari K., Physical and technical activity of soccer players in the French First League - with special reference to their playing position, Int SportMed J, 11, 2, pp. 278-290, (2010); bradley PS, Carling C, Archer D, roberts J, Dodds A, Di Mascio M, Et al., The effect of playing formation on high-intensity running and technical profiles in English FA Premier League soccer matches, J Sports Sci, 29, 8, pp. 821-830, (2011)","F.M. Clemente; Escola Superior Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Rua Escola Industrial e Comercial de Nun'Álvares, Viana do Castelo, 4900-347, Portugal; email: Filipe.clemente5@gmail.com","","University School of Physical Education in Wroclaw","17323991","","","","English","Hum. Mov.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85107429477" "Moreno-Pérez V.; Méndez-Villanueva A.; Soler A.; Del Coso J.; Courel-Ibáñez J.","Moreno-Pérez, Víctor (35096622700); Méndez-Villanueva, Alberto (15035651800); Soler, Aitor (57208735619); Del Coso, Juan (14053970400); Courel-Ibáñez, Javier (57222367161)","35096622700; 15035651800; 57208735619; 14053970400; 57222367161","No relationship between the nordic hamstring and two different isometric strength tests to assess hamstring muscle strength in professional soccer players","2020","Physical Therapy in Sport","46","","","97","103","6","9","10.1016/j.ptsp.2020.08.009","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85090021069&doi=10.1016%2fj.ptsp.2020.08.009&partnerID=40&md5=cfb0ad28a2de3f1cb1eb531f0974af60","Sports Research Center, Miguel Hernandez University of Elche, Alicante, Spain; Center for Translational Research in Physiotherapy, Department of Pathology and Surgery, Miguel Hernandez University of Elche, San Joan, Spain; Qatar Football Association, Doha, Qatar; Medical and Performance Department, Elche Club Fútbol, Spain; Centre for Sport Studies, Rey Juan Carlos University, Fuenlabrada, Madrid, Spain; Faculty of Sport Sciences, University of Murcia, Murcia, Spain","Moreno-Pérez V., Sports Research Center, Miguel Hernandez University of Elche, Alicante, Spain, Center for Translational Research in Physiotherapy, Department of Pathology and Surgery, Miguel Hernandez University of Elche, San Joan, Spain; Méndez-Villanueva A., Qatar Football Association, Doha, Qatar; Soler A., Medical and Performance Department, Elche Club Fútbol, Spain; Del Coso J., Centre for Sport Studies, Rey Juan Carlos University, Fuenlabrada, Madrid, Spain; Courel-Ibáñez J., Faculty of Sport Sciences, University of Murcia, Murcia, Spain","Objectives: To investigate the relationship between one eccentric and two isometric tests commonly used to assess hamstring strength in professional soccer. Settings: Professional soccer club. Design: Cross-sectional study. Participants: Twenty male professional soccer players. Main outcome measures: Hamstring force was quantified during 3 tests (Nordic hamstring eccentric, 90:20 isometric posterior-chain strength and isometric 15° knee flexion) using a load cell, a handheld dynamometer and a force platform, respectively. Results: Poor relationships and low concordance were observed between isometric and eccentric tests, showing different ability to discriminate hamstring weakness and asymmetries. The Nordic hamstring test identified between-limb asymmetry >15% in 30% of the players, 25% in the 15° knee flexion and 5% in the 90:20 test. All players obtained different results in the three tests with only one showing asymmetry >15% in two tests. Conclusion: Results obtained in each test cannot inform the others. Mechanical outputs of these tests must be used for particular purposes during the prevention, rehabilitation and monitoring process of hamstring injury. Isometric testing might be preferable during the initial phases of the recovery process of a hamstring injury while the Nordic hamstring test might be used in the last stages or detect muscle weakness/asymmetries in non-injured players. © 2020 Elsevier Ltd","Elite athlete; Football; Rehabilitation; Return to play","Adult; Athletes; Athletic Injuries; Cross-Sectional Studies; Hamstring Muscles; Humans; Male; Muscle Strength; Muscle Strength Dynamometer; Muscle Weakness; Soccer; adult; Article; biological monitoring; biomechanics; correlational study; cross-sectional study; eccentric muscle contraction; elite athlete; football; function test; hamstring muscle; human; human experiment; knee function; male; muscle disease; muscle isometric contraction; muscle strength; muscle weakness; normal human; priority journal; professional athlete; rehabilitation care; return to sport; soccer player; weight bearing; athlete; dynamometer; hamstring muscle; injury; muscle weakness; pathophysiology; soccer; sport injury","Al Attar W.S.A., Soomro N., Sinclair P.J., Pappas E., Sanders R.H., Effect of injury prevention programs that include the nordic hamstring exercise on hamstring injury rates in soccer players: A systematic review and meta-analysis, Sports Medicine, 47, 5, pp. 907-916, (2017); Askling C.M., Tengvar M., Thorstensson A., Acute hamstring injuries in Swedish elite football: A prospective randomised controlled clinical trial comparing two rehabilitation protocols, British Journal of Sports Medicine, 47, 15, pp. 953-959, (2013); Atkinson G., Nevill A., Statistical methods for assessing measurement Error (reliability) in variables relevant to sports medicine, Sports Medicine, 26, 4, pp. 217-238, (1998); Bartschi T.M., Sanders D.C., Farney T.M., Kokkonen J., Nelson A.G., A pre-exercise dose of muscle sentry((R)) has no effect on performing repeated leg press sets to failure, International Journal of Exercise Science, 10, 7, pp. 1000-1008, (2017); Bourne M.N., Opar D.A., Williams M.D., Shield A.J., Eccentric knee flexor strength and risk of hamstring injuries in rugby union, The American Journal of Sports Medicine, 43, 11, pp. 2663-2670, (2015); Brukner P., Nealon A., Morgan C., Burgess D., Dunn A., Recurrent hamstring muscle injury: Applying the limited evidence in the professional football setting with a seven-point programme, British Journal of Sports Medicine, 48, 11, pp. 929-938, (2014); Chumanov E.S., Schache A.G., Heiderscheit B.C., Thelen D.G., Hamstrings are most susceptible to injury during the late swing phase of sprinting, British Journal of Sports Medicine, 46, 2, (2012); Croisier J.L., Forthomme B., Namurois M.H., Vanderthommen M., Crielaard J.M., Hamstring muscle strain recurrence and strength performance disorders, The American Journal of Sports Medicine, 30, 2, pp. 199-203, (2002); De Vos R.-J., Reurink G., Goudswaard G.-J., Moen M.H., Weir A., Tol J.L., Clinical findings just after return to play predict hamstring re-injury, but baseline MRI findings do not, British Journal of Sports Medicine, 48, 18, pp. 1377-1384, (2014); van Dyk N., Witvrouw E., Bahr R., Interseason variability in isokinetic strength and poor correlation with Nordic hamstring eccentric strength in football players, Scandinavian Journal of Medicine & Science in Sports, 28, 8, pp. 1878-1887, (2018); Ekstrand J., Krutsch W., Spreco A., Van Zoest W., Roberts C., Meyer T., Et al., Time before return to play for the most common injuries in professional football: A 16-year follow-up of the UEFA elite club injury study, British Journal of Sports Medicine, 54, 7, pp. 421-426, (2020); Elerian A.E., El-Sayyad M.M., Dorgham H.A.A., Effect of pre-training and post-training Nordic exercise on hamstring injury prevention, recurrence, and severity in soccer players, Annals of Rehabilitation Medicine, 43, 4, pp. 465-473, (2019); Fort-Vanmeerhaeghe A., Montalvo A.M., Sitja-Rabert M., Kiefer A.W., Myer G.D., Neuromuscular asymmetries in the lower limbs of elite female youth basketball players and the application of the skillful limb model of comparison, Physical Therapy in Sport, 16, 4, pp. 317-323, (2015); Heiderscheit B.C., Sherry M.A., Silder A., Chummanov E.S., Thelen D.G., Hamstring strain injuries: Recommendations for diagnosis, rehabilitation, and injury prevention, Journal of Orthopaedic & Sports Physical Therapy, 40, 2, pp. 67-81, (2010); Hickey J.T., Timmins R.G., Maniar N., Rio E., Hickey P.F., Pitcher C.A., Et al., Pain-free versus pain-threshold rehabilitation following acute hamstring strain injury: A randomized controlled trial, Journal of Orthopaedic & Sports Physical Therapy, pp. 1-35, (2019); Lee J.W.Y., Mok K.M., Chan H.C.K., Yung P.S.H., Chan K.M., Eccentric hamstring strength deficit and poor hamstring-to-quadriceps ratio are risk factors for hamstring strain injury in football: A prospective study of 146 professional players, Journal of Science and Medicine in Sport, 21, 8, pp. 789-793, (2018); Maniar N., Shield A.J., Williams M.D., Timmins R.G., Opar D.A., Hamstring strength and flexibility after hamstring strain injury: A systematic review and meta-analysis, British Journal of Sports Medicine, 50, 15, pp. 909-920, (2016); Matinlauri A., Alcaraz P.E., Freitas T.T., Mendiguchia J., Abedin-Maghanaki A., Castillo A., Et al., A comparison of the isometric force fatigue-recovery profile in two posterior chain lower limb tests following simulated soccer competition, PLoS One, 14, 5, (2019); McBride G.B., A proposal for strength-of-agreement criteria for Lin's concordance correlation coefficient. NIWA client report: HAM2005-062, (2005); Onishi H., Yagi R., Oyama M., Akasaka K., Ihashi K., Handa Y., EMG-angle relationship of the hamstring muscles during maximum knee flexion, Journal of Electromyography and Kinesiology, 12, 5, pp. 399-406, (2002); Reurink G., Goudswaard G.J., Moen M.H., Tol J.L., Verhaar J.A.N., Weir A., Strength measurements in acute hamstring injuries: Intertester reliability and prognostic value of handheld dynamometry, Journal of Orthopaedic & Sports Physical Therapy, 46, 8, pp. 689-696, (2016); Ribeiro-Alvares J.B., Oliveira G.D.S., De Lima-E-Silva F.X., Baroni B.M., Eccentric knee flexor strength of professional football players with and without hamstring injury in the prior season, European Journal of Sport Science, pp. 1-26, (2020); Thelen D.G., Chumanov E.S., Hoerth D.M., Best T.M., Swanson S.C., Li L., Et al., Hamstring muscle kinematics during treadmill sprinting, Medicine & Science in Sports & Exercise, 37, 1, pp. 108-114, (2005); Thorborg K., Couppe C., Petersen J., Magnusson S.P., Holmich P., Eccentric hip adduction and abduction strength in elite soccer players and matched controls: A cross-sectional study, British Journal of Sports Medicine, (2011); Thorborg K., Krommes K.K., Esteve E., Clausen M.B., Bartels E.M., Rathleff M.S., Effect of specific exercise-based football injury prevention programmes on the overall injury rate in football: A systematic review and meta-analysis of the FIFA 11 and 11+ programmes, British Journal of Sports Medicine, 51, 7, pp. 562-571, (2017); Timmins R.G., Bourne M.N., Shield A.J., Williams M.D., Lorenzen C., Opar D.A., Short biceps femoris fascicles and eccentric knee flexor weakness increase the risk of hamstring injury in elite football (soccer): A prospective cohort study, British Journal of Sports Medicine, 50, 24, pp. 1524-1535, (2016); Van Dyk N., Behan F.P., Whiteley R., Including the nordic hamstring exercise in injury prevention programmes halves the rate of hamstring injuries: A systematic review and meta-analysis of 8459 athletes, British Journal of Sports Medicine, 53, 21, pp. 1362-1370, (2019); Wiesinger H.P., Gressenbauer C., Kosters A., Scharinger M., Muller E., Device and method matter: A critical evaluation of eccentric hamstring muscle strength assessments, Scandinavian Journal of Medicine & Science in Sports, 30, 2, pp. 217-226, (2020)","J. Courel-Ibáñez; University of Murcia, Faculty of Sport Sciences, San Javier, C/Argentina s/n, 30730, Spain; email: javier.courel.ibanez@gmail.com","","Churchill Livingstone","1466853X","","PTSHB","32890811","English","Phys. Ther. Sport","Article","Final","","Scopus","2-s2.0-85090021069" "Kim J.H.; Lee K.-K.; Ahn K.O.; Kong S.J.; Park S.C.; Lee Y.S.","Kim, Jin Hyun (42661621500); Lee, Ki-Kwang (55799131000); Ahn, Keun Ok (57189064840); Kong, Se Jin (56364403700); Park, Seong Cheol (57218956117); Lee, Yong Seuk (34872499400)","42661621500; 55799131000; 57189064840; 56364403700; 57218956117; 34872499400","Evaluation of the interaction between contact force and decision making on lower extremity biomechanics during a side-cutting maneuver","2016","Archives of Orthopaedic and Trauma Surgery","136","6","","821","828","7","8","10.1007/s00402-016-2457-1","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84965008563&doi=10.1007%2fs00402-016-2457-1&partnerID=40&md5=f907815cd0e2837bf9b6ba03db759e10","Sports Rehabilitation, Jeju International University, Jeju, South Korea; School of Sports Science, Kookmin University, Seoul, South Korea; Department of Kinesiologic Medical Science, Dankook University, Cheonan, South Korea; Department of Orthopaedic Surgery, Seoul National University College of Medicine, Bundang Hospital, 166 Gumi-ro, Bundang-gu, Seongnam, 463-707, Gyeonggi, South Korea","Kim J.H., Sports Rehabilitation, Jeju International University, Jeju, South Korea; Lee K.-K., School of Sports Science, Kookmin University, Seoul, South Korea; Ahn K.O., Department of Kinesiologic Medical Science, Dankook University, Cheonan, South Korea; Kong S.J., School of Sports Science, Kookmin University, Seoul, South Korea; Park S.C., Department of Orthopaedic Surgery, Seoul National University College of Medicine, Bundang Hospital, 166 Gumi-ro, Bundang-gu, Seongnam, 463-707, Gyeonggi, South Korea; Lee Y.S., Department of Orthopaedic Surgery, Seoul National University College of Medicine, Bundang Hospital, 166 Gumi-ro, Bundang-gu, Seongnam, 463-707, Gyeonggi, South Korea","Introduction: The purposes of this study were (1) to compare the effect between contact force [first and second ground reaction force (GRF)] and decision making (anticipation vs unanticipation) on lower extremity biomechanics during a side-cutting maneuver in young soccer players; and (2) to identify which condition is more vulnerable to biomechanical risk factors of the anterior cruciate ligament (ACL) injury. Materials and methods: Sixteen young, male middle school soccer players with right leg dominance participated in this study. Three-dimensional motion analysis featuring GRF and electromyography (EMG) of the right leg was used during the stance phase of the side-cutting maneuver. Kinematics, kinetics, and EMG data for each athlete were analyzed and averaged for three successful anticipated and unanticipated side-cutting maneuvers. Results: GRF was smaller and muscle activities were lower in most muscle groups in the first peak than that of the second peak. More flexion and internal rotational angles of the hip joint were observed in the unanticipated first peak that that of the second peak. Lesser flexion angle and moment of the knee joint observed in the first peak than that of the second peak, and abduction moment was increased after the unanticipation. Conclusion: The GRF and muscle activities were smaller in the first peak than those in the second peak; however, first peak showed a closer association with biomechanical risk factors of the ACL injury. There were some interactions between contact force and decision making and unanticipation made the first peak more risky to the ACL injury. © 2016, Springer-Verlag Berlin Heidelberg.","Anterior cruciate ligament; Biomechanics; Contact force; Side-cutting; Unanticipation","Adolescent; Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Child; Decision Making; Electromyography; Humans; Joints; Lower Extremity; Male; Soccer; abduction; anterior cruciate ligament injury; Article; biomechanics; controlled study; decision making; electromyography; ground reaction force; human; human experiment; kinematics; knee function; male; priority journal; risk assessment; risk factor; rotation; soccer player; adolescent; biomechanics; child; joint; lower limb; pathophysiology; physiology; soccer","Beaulieu M.L., Lamontagne M., Xu L., Gender differences in time-frequency EMG analysis of unanticipated cutting maneuvers, Med Sci Sports Exerc, 40, pp. 1795-1804, (2008); Beaulieu M.L., Lamontagne M., Xu L., Lower limb muscle activity and kinematics of an unanticipated cutting manoeuvre: a gender comparison, Knee Surg Sports Traumatol Arthrosc, 17, pp. 968-976, (2009); Besier T.F., Lloyd D.G., Ackland T.R., Cochrane J.L., Anticipatory effects on knee joint loading during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1176-1181, (2001); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Boden B.P., Griffin L.Y., Garrett W.E., Etiology and prevention of noncontact ACL injury, Phys Sportsmed, 28, pp. 53-60, (2000); Boden B.P., Sheehan F.T., Torg J.S., Hewett T.E., Noncontact anterior cruciate ligament injuries: mechanisms and risk factors, J Am Acad Orthop Surg, 18, pp. 520-527, (2010); Borotikar B.S., Newcomer R., Koppes R., McLean S.G., Combined effects of fatigue and decision making on female lower limb landing postures: central and peripheral contributions to ACL injury risk, Clin Biomech (Bristol, Avon), 23, pp. 81-92, (2008); Gainey J.C., Kadaba M.P., Wootten M.E., Ramakrishnan H.K., Siris E.S., Lindsay R., Canfield R., Cochran G.V., Gait analysis of patients who have Paget disease, J Bone Joint Surg Am, 71, pp. 568-579, (1989); Houck J.R., Duncan A., De Haven K.E., Comparison of frontal plane trunk kinematics and hip and knee moments during anticipated and unanticipated walking and side step cutting tasks, Gait Posture, 24, pp. 314-322, (2006); Imwalle L.E., Myer G.D., Ford K.R., Hewett T.E., Relationship between hip and knee kinematics in athletic women during cutting maneuvers: a possible link to noncontact anterior cruciate ligament injury and prevention, J Strength Cond Res, 23, pp. 2223-2230, (2009); Kadaba M.P., Ramakrishnan H.K., Wootten M.E., Measurement of lower extremity kinematics during level walking, J Orthop Res, 8, pp. 383-392, (1990); Kim J.H., Lee K.K., Kong S.J., An K.O., Jeong J.H., Lee Y.S., Effect of anticipation on lower extremity biomechanics during side- and cross-cutting maneuvers in young soccer players, Am J Sports Med, 42, pp. 1985-1992, (2014); Ladenhauf H.N., Graziano J., Marx R.G., Anterior cruciate ligament prevention strategies: are they effective in young athletes—current concepts and review of literature, Curr Opin Pediatr, 25, pp. 64-71, (2013); Landry S.C., McKean K.A., Hubley-Kozey C.L., Stanish W.D., Deluzio K.J., Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated run and crosscut maneuver, Am J Sports Med, 35, pp. 1901-1911, (2007); Landry S.C., McKean K.A., Hubley-Kozey C.L., Stanish W.D., Deluzio K.J., Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated side-cut maneuver, Am J Sports Med, 35, pp. 1888-1900, (2007); Landry S.C., McKean K.A., Hubley-Kozey C.L., Stanish W.D., Deluzio K.J., Gender differences exist in neuromuscular control patterns during the pre-contact and early stance phase of an unanticipated side-cut and cross-cut maneuver in 15–18 years old adolescent soccer players, J Electromyogr Kinesiol, 19, pp. e370-e379, (2009); Lieberman D.E., Venkadesan M., Werbel W.A., Daoud A.I., D'Andrea S., Davis I.S., Mang'eni R.O., Pitsiladis Y., Foot strike patterns and collision forces in habitually barefoot versus shod runners, Nature, 463, pp. 531-535, (2010); Lim B.O., Lee Y.S., Kim J.G., An K.O., Yoo J., Kwon Y.H., Effects of sports injury prevention training on the biomechanical risk factors of anterior cruciate ligament injury in high school female basketball players, Am J Sports Med, 37, pp. 1728-1734, (2009); Lohmander L.S., Ostenberg A., Englund M., Roos H., High prevalence of knee osteoarthritis, pain, and functional limitations in female soccer players 12 years after anterior cruciate ligament injury, Arthritis Rheum, 50, pp. 3145-3152, (2004); Mache M.A., Hoffman M.A., Hannigan K., Golden G.M., Pavol M.J., Effects of decision making on landing mechanics as a function of task and sex, Clin Biomech (Bristol, Avon), 28, pp. 104-109, (2013); Milner C.E., Ferber R., Pollard C.D., Hamill J., Davis I.S., Biomechanical factors associated with tibial stress fracture in female runners, Med Sci Sports Exerc, 38, pp. 323-328, (2006); Olsen O.E., Myklebust G., Engebretsen L., Holme I., Bahr R., Relationship between floor type and risk of ACL injury in team handball, Scand J Med Sci Sports, 13, pp. 299-304, (2003); Sigward S.M., Pollard C.D., Havens K.L., Powers C.M., Influence of sex and maturation on knee mechanics during side-step cutting, Med Sci Sports Exerc, 44, pp. 1497-1503, (2012); van Gent R.N., Siem D., van Middelkoop M., van Os A.G., Bierma-Zeinstra S.M., Koes B.W., Incidence and determinants of lower extremity running injuries in long distance runners: a systematic review, Br J Sports Med, 41, pp. 469-480, (2007)","Y.S. Lee; Department of Orthopaedic Surgery, Seoul National University College of Medicine, Bundang Hospital, Seongnam, 166 Gumi-ro, Bundang-gu, 463-707, South Korea; email: smcos1@hanmail.net","","Springer Verlag","09368051","","AOTSE","27142418","English","Arch. Orthop. Trauma Surg.","Article","Final","","Scopus","2-s2.0-84965008563" "Filben T.M.; Pritchard N.S.; Hanes-Romano K.E.; Miller L.E.; Miles C.M.; Urban J.E.; Stitzel J.D.","Filben, Tanner M. (57209830121); Pritchard, N. Stewart (57219384344); Hanes-Romano, Kathryn E. (57226307322); Miller, Logan E. (55955121600); Miles, Christopher M. (56723593400); Urban, Jillian E. (36119491100); Stitzel, Joel D. (7003389866)","57209830121; 57219384344; 57226307322; 55955121600; 56723593400; 36119491100; 7003389866","Comparison of women's collegiate soccer header kinematics by play state, intent, and outcome","2021","Journal of Biomechanics","126","","110619","","","","7","10.1016/j.jbiomech.2021.110619","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85111153873&doi=10.1016%2fj.jbiomech.2021.110619&partnerID=40&md5=8ebc0a788dccbff349d2192eebcf3172","Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States; School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, Winston-Salem, NC, United States; Sports Medicine, Wake Forest Baptist Health, Winston-Salem, NC, United States; Department of Family and Community Medicine, Wake Forest School of Medicine, Winston-Salem, NC, United States","Filben T.M., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, Winston-Salem, NC, United States; Pritchard N.S., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, Winston-Salem, NC, United States; Hanes-Romano K.E., Sports Medicine, Wake Forest Baptist Health, Winston-Salem, NC, United States; Miller L.E., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, Winston-Salem, NC, United States; Miles C.M., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, Sports Medicine, Wake Forest Baptist Health, Winston-Salem, NC, United States, Department of Family and Community Medicine, Wake Forest School of Medicine, Winston-Salem, NC, United States; Urban J.E., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, Winston-Salem, NC, United States; Stitzel J.D., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, Winston-Salem, NC, United States","Although most head impacts in soccer are headers, limited knowledge exists about how header magnitude varies by on-field scenario. This study aimed to compare head kinematics during on-field headers by play state (i.e., corner kick, goal kick, free kick, throw-in, drill, or live ball), intent (i.e., pass, shot, or clearance), and outcome (i.e., successful or unsuccessful). Fifteen female collegiate soccer players were instrumented with mouthpiece-based head impact sensors during 72 practices and 24 games. A total of 336 headers were verified and contextualized via film review. Play state was associated with peak linear acceleration, rotational acceleration, and rotational velocity (all p < .001) while outcome was associated with peak linear acceleration (p < .010). Header intent was not significantly associated with any kinematic metric. Headers during corner kicks (22.9 g, 2189.3 rad/s2, 9.87 rad/s), goal kicks (24.3 g, 2658.9 rad/s2, 10.1 rad/s), free kicks (18.0 g, 1843.3 rad/s2, 8.43 rad/s), and live balls (18.8 g, 1769.7 rad/s2, 8.09 rad/s) each had significantly greater mean peak linear acceleration (all p < .050), rotational acceleration (all p < .001), and rotational velocity (all p < .001) than headers during drills (13.0 g, 982.4 rad/s2, 5.28 rad/s). Headers during goal kicks also had a significantly greater mean rotational acceleration compared to headers during live ball scenarios (p < .050). Successful headers (18.3 g) had a greater mean peak linear acceleration compared to unsuccessful headers (13.8 g; p < .010). Results may help inform efforts to reduce head impact exposure in soccer. © 2021 Elsevier Ltd","Head impact exposure; Headers; Mouthpiece; Repetitive head impacts","Acceleration; Biomechanical Phenomena; Female; Humans; Intention; Soccer; Universities; Drills; Infill drilling; Kinematics; Sports; Field scenarios; Free kick; Head impact; Head impact exposure; Header; Linear accelerations; Mouthpiece; Repetitive head impact; Rotational acceleration; Rotational velocity; acceleration; adult; Article; female; head movement; human; kinematics; outcome assessment; play; soccer; soccer player; student athlete; velocity; young adult; behavior; biomechanics; soccer; university; Acceleration","Caccese J.B., Best C., Lamond L.C., DiFabio M., Kaminski T.W., Watson D., Getchell N., Buckley T.A., Effects of Repetitive Head Impacts on a Concussion Assessment Battery, Medicine & Science in Sports & Exercise, (2019); Caccese J.B., Lamond L.C., Buckley T.A., Kaminski T.W., Reducing purposeful headers from goal kicks and punts may reduce cumulative exposure to head acceleration, Research in Sports Medicine, 24, 4, pp. 407-415, (2016); Dick R., Ferrara M.S., Agel J., Courson R., Marshall S.W., Hanley M.J., Reifsteck F., Descriptive epidemiology of collegiate men's football injuries: National collegiate athletic association injury surveillance system, 1988–1989 through 2003–2004, J of Athletic Training, 42, 2, pp. 221-233, (2007); Guskiewicz K.M., Marshall S.W., Broglio S.P., Cantu R.C., Kirkendall D.T., No evidence of impaired neurocognitive performance in collegiate soccer players, Am. J. Sports Med., 30, 2, pp. 157-162, (2002); Harriss A., Johnson A.M., Walton D.M., Dickey J.P., Head impact magnitudes that occur from purposeful soccer heading depend on the game scenario and head impact location, Musculoskeletal Sci and Practice, 40, pp. 53-57, (2019); Hwang S., Ma L., Kawata K., Tierney R., Jeka J.J., Vestibular Dysfunction after Subconcussive Head Impact, J. Neurotrauma, 34, 1, pp. 8-15, (2017); Kawata K., Tierney R., Phillips J., Jeka J.J., Effect of Repetitive Sub-concussive Head Impacts on Ocular Near Point of Convergence, Int J Sports Med, 37, pp. 405-410, (2016); Kaminski T.W., Wikstrom A.M., Gutierrez G.M., Glutting J.J., Purposeful heading during a season does not influence cognitive function or balance in female soccer players, J of Clinical and Experimental Neuropsychology, 29, 7, pp. 742-751, (2007); Lamond L.C., Caccese J.B., Buckley T.A., Glutting J., Kaminski T.W., Linear Acceleration in Direct Head Contact Across Impact Type, Player Position, and Playing Scenario in Collegiate Women's Soccer Players, J of Athletic Training, 53, 2, pp. 115-121, (2018); Levitch C.F., Zimmerman M.E., Lubin N., Kim N., Lipton R.B., Stewart W.F., Kim M., Lipton M.L., Recent and Long-Term Soccer Heading Exposure Is Differentially Associated with Neuropsychological Function in Amateur Players, J of the International Neuropsychological Society, 24, 2, pp. 147-155, (2018); Lipton M.L., Kim N., Zimmerman M.E., Kim M., Stewart W.F., Branch C.A., Lipton R.B., Soccer heading is associated with white matter microstructural and cognitive abnormalities, Radiology, 268, 3, pp. 850-857, (2013); Lynall R.C., Clark M.D., Grand E.E., Stucker J.C., Littleton A.C., Aguilar A.J., Petschauer M.A., Teel E.F., Mihalik J.P., Head Impact Biomechanics in Women's College Soccer, Medicine and Science in Sports and Exercise, 48, 9, pp. 1772-1778, (2016); Mainwaring L., Ferdinand Pennock K.M., Mylabathula S., Alavie B.Z., Subconcussive head impacts in sport: A systematic review of the evidence, Int. J. Psychophysiol., 132, 2018, pp. 39-54, (2018); McCuen E., Svaldi D., Breedlove K., Kraz N., Cummiskey B., Breedlove E.L., Traver J., Desmond K.F., Hannemann R.E., Zanath E., Guerra A., Leverenz L., Talavage T.M., Nauman E.A., Collegiate women's soccer players suffer greater cumulative head impacts than their high school counterparts, J. Biomech., 48, 13, pp. 3729-3732, (2015); Miller L.E., Pinkerton E.K., Fabian K.C., Wu L.C., Espeland M.A., Lamond L.C., Miles C.M., Camarillo D.B., Stitzel J.D., Urban J.E., Characterizing head impact exposure in youth female soccer with a custom-instrumented mouthpiece, Research in Sports Medicine, 28, 1, pp. 55-71, (2020); Miller L.E., Urban J.E., Kelley M.E., Powers A.K., Whitlow C.T., Maldjian J.A., Rowson S., Stitzel J.D., Evaluation of Brain Response during Head Impact in Youth Athletes Using an Anatomically Accurate Finite Element Model, J. Neurotrauma, 36, 10, pp. 1561-1570, (2019); Nowak M.K., Bevilacqua Z.W., Ejima K., Huibregtse M.E., Chen Z., Mickleborough T.D., Newman S.D., Kawata K., Neuro-Ophthalmologic Response to Repetitive Subconcussive Head Impacts: A Randomized Clinical Trial, JAMA Ophthalmology, 138, 4, pp. 350-357, (2020); Press J.N., Rowson S., Quantifying Head Impact Exposure in Collegiate Women's Soccer, Clin. J. Sport Med., 27, 2, pp. 104-110, (2017); Quintero L.M., Moore J.W., Yeager M.G., Rowsey K., Olmi D.J., Britton-Slater J., Harper M.L., Zezenski L.E., Reducing risk of head injury in youth soccer: An extension of behavioral skills training for heading, J. Appl. Behav. Anal., 53, 1, pp. 237-248, (2020); Reynolds B.B., Patrie J., Henry E.J., Goodkin H.P., Broshek D.K., Wintermark M., Druzgal T.J., Effects of sex and event type on head impact in collegiate soccer, Orthopaedic J of Sports Medicine, 5, 4, pp. 1-10, (2017); Rich A.M., Filben T.M., Miller L.E., Tomblin B.T., Van Gorkom A.R., Hurst M.A., Barnard R.T., Kohn D.S., Urban J.E., Stitzel J.D., Development, validation and pilot field deployment of a custom mouthpiece for head impact measurement, Ann. Biomed. Eng., 47, 10, pp. 2109-2121, (2019); Rowson S., Duma S.M., Brain Injury Prediction: Assessing the Combined Probability of Concussion Using Linear and Rotational Head Acceleration, Ann. Biomed. Eng., 41, 5, pp. 873-882, (2013); Saunders T.D., Le R.K., Breedlove K.M., Bradney D.A., Bowman T.G., Sex differences in mechanisms of head impacts in collegiate soccer athletes, Clin. Biomech., 74, February, pp. 14-20, (2020); (2016); Wallace C., Smirl J.D., Zetterberg H., Blennow K., Bryk K., Burma J., Dierijck J., Wright A.D., Van Donkelaar P., Heading in soccer increases serum neurofilament light protein and SCAT3 symptom metrics, BMJ Open Sport and Exercise Medicine, 4, 1, (2018); Wirsching A., Chen Z., Bevilacqua Z.W., Huibregtse M.E., Kawata K., Association of Acute Increase in Plasma Neurofilament Light with Repetitive Subconcussive Head Impacts: A Pilot Randomized Control Trial, J. Neurotrauma, 36, 4, pp. 548-553, (2019); Wu L.C., Nangia V., Bui K., Hamoor B., Kurt M., Hernandez F., Kuo C., Camarillo D.B., In vivo evaluation of wearable head impact sensors, Ann. Biomed. Eng., 44, 4, pp. 1234-1245, (2016); Zuckerman S.L., Kerr Z.Y., Yengo-Kahn A., Wasserman E., Covassin T., Solomon G.S., Epidemiology of sports-related concussion in NCAA athletes from 2009–2010 to 2013–2014, Am. J. Sports Med., 43, 11, pp. 2654-2662, (2015)","T.M. Filben; Winston-Salem, 575 N Patterson Avenue, Suite 530, 27101, United States; email: tfilben@wakehealth.edu","","Elsevier Ltd","00219290","","JBMCB","34325122","English","J. Biomech.","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85111153873" "King M.G.; Semciw A.I.; Hart H.F.; Schache A.G.; Middleton K.J.; Heerey J.J.; Agricola R.; Crossley K.M.","King, Matthew G. (55636112000); Semciw, Adam I. (55022720000); Hart, Harvi F. (55216424200); Schache, Anthony G. (6602235911); Middleton, Kane J. (57202472881); Heerey, Josh J. (57200082291); Agricola, Rintje (55042139700); Crossley, Kay M. (7004850146)","55636112000; 55022720000; 55216424200; 6602235911; 57202472881; 57200082291; 55042139700; 7004850146","Sub-elite football players with hip-related groin pain and a positive flexion, adduction, and internal rotation test exhibit distinct biomechanical differences compared with the asymptomatic side","2018","Journal of Orthopaedic and Sports Physical Therapy","48","7","","584","593","9","10","10.2519/jospt.2018.7910","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85049538932&doi=10.2519%2fjospt.2018.7910&partnerID=40&md5=2cab5043646a63e44a2dc0b359d685e6","La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Australia; School of Health and Rehabilitation Sciences, University of Queensland, St Lucia, Australia; Department of Mechanical Engineering, University of Melbourne, Melbourne, Australia; Erasmus University Medical Center, Rotterdam, Netherlands","King M.G., La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Australia; Semciw A.I., La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Australia, School of Health and Rehabilitation Sciences, University of Queensland, St Lucia, Australia; Hart H.F., La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Australia; Schache A.G., La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Australia, Department of Mechanical Engineering, University of Melbourne, Melbourne, Australia; Middleton K.J., La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Australia; Heerey J.J., La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Australia; Agricola R., Erasmus University Medical Center, Rotterdam, Netherlands; Crossley K.M., La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Australia","BACKGROUND: Hip-related groin pain is common in sub-elite football players and may be associated with altered hip biomechanics. OBJECTIVES: To compare the hip biomechanics, bony hip morphology associated with femoroacetabular impingement (FAI) syndrome, and hip strength and range of motion (ROM) between the symptomatic and asymptomatic limbs of sub-elite football players with unilateral hip-related groin pain and a positive flexion, adduction, and internal rotation (FADIR) test. METHODS: Fifteen sub-elite football (soccer) players with unilateral hip-related groin pain and a positive FADIR test were recruited for this obser-vational cross-sectional study. Three-dimensional motion analysis and ground reaction force data were recorded for walking and a single-leg drop-jump (SLDJ) task. Participants also underwent a standard anterior-posterior hip radiograph and hip strength and ROM assessment. Between-limb differences were assessed using paired t tests or Wilcoxon signed-rank tests. RESULTS: The symptomatic limb displayed a smaller peak hip extension angle (P = .01) and a lower peak hip adduction moment (P = .03) compared with the asymptomatic limb during the stance phase of walking. Additionally, during the SLDJ, the symptomatic limb demonstrated less total sagittal plane ROM (P = .04). The symptomatic limb also demonstrated less external rotation ROM (P = .03). However, no differences were found between limbs for bony hip morphology associated with FAI syndrome or hip strength. CONCLUSION: This study found between-limb asymmetries in low-and high-impact functional tasks, such as walking and an SLDJ, in football players with unilateral hip-related groin pain. Despite unilateral pain, bony morphology associated with FAI syndrome did not differ between limbs. Copyright ©2018 Journal of Orthopaedic & Sports Physical Therapy®.","Biomechanics; Femoroacetabular impingement syndrome; Gait; Hip; Walking","Adolescent; Adult; Arthralgia; Biomechanical Phenomena; Cross-Sectional Studies; Female; Femoracetabular Impingement; Groin; Hip Joint; Humans; Male; Middle Aged; Muscle Strength; Physical Examination; Radiography; Range of Motion, Articular; Soccer; adolescent; adult; arthralgia; biomechanics; cross-sectional study; diagnostic imaging; female; femoroacetabular impingement; hip; human; inguinal region; joint characteristics and functions; male; middle aged; muscle strength; pathophysiology; physical examination; physiology; procedures; radiography; soccer","Agricola R., Heijboer M.P., Bierma-Zeinstra S.M., Verhaar J.A., Weinans H., Waarsing J.H., Cam impingement causes osteoarthritis of the hip: A nationwide prospective cohort study (check, Ann Rheum Dis, 72, pp. 918-923, (2013); Agricola R., Waarsing J.H., Thomas G.E., Et al., Cam impingement: Defining the presence of a cam deformity by the alpha angle: Data from the check cohort and Chingford cohort, Osteoarthritis Cartilage, 22, pp. 218-225, (2014); 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Winter D.A., Biomechanics and Motor Control of Human Movement, (2009); Zacharias A., Pizzari T., English D.J., Kapakoulakis T., Green R.A., Hip abductor muscle volume in hip osteoarthritis and matched controls, Osteoarthritis Cartilage, 24, pp. 1727-1735, (2016)","K.M. Crossley; La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, Australia; email: k.crossley@latrobe.edu.au","","Movement Science Media","01906011","","JOSPD","29739301","English","","Article","Final","","Scopus","2-s2.0-85049538932" "Muñoz E.R.; Caccese J.B.; Wilson B.E.; Shuler K.T.; Santos F.V.; Cabán C.T.; Jeka J.J.; Langford D.; Hudson M.B.","Muñoz, Eric R. (57204182863); Caccese, Jaclyn B. (57189060030); Wilson, Brittany E. (57220152740); Shuler, Kyle T. (57220151678); Santos, Fernando V. (57218423870); Cabán, Carolina T. (57192709861); Jeka, John J. (6603740007); Langford, Dianne (7005059205); Hudson, Matthew B. (23667253600)","57204182863; 57189060030; 57220152740; 57220151678; 57218423870; 57192709861; 6603740007; 7005059205; 23667253600","Effects of purposeful soccer heading on circulating small extracellular vesicle concentration and cargo","2021","Journal of Sport and Health Science","10","2","","122","130","8","9","10.1016/j.jshs.2020.11.006","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85098130870&doi=10.1016%2fj.jshs.2020.11.006&partnerID=40&md5=58d87b84285b42f6247f16bd109b2549","Department of Kinesiology and Applied Physiology, University of Delaware, 540 South College Avenue, Newark, 19713, DE, United States; The Ohio State University College of Medicine, School of Health and Rehabilitation Sciences, 453 W, 10th Avenue, Columbus, 43210, OH, United States; Department of Neuroscience, Lewis Katz School of Medicine, Temple University, 3500 North Broad Street, Philadelphia, 19140, PA, United States","Muñoz E.R., Department of Kinesiology and Applied Physiology, University of Delaware, 540 South College Avenue, Newark, 19713, DE, United States; Caccese J.B., The Ohio State University College of Medicine, School of Health and Rehabilitation Sciences, 453 W, 10th Avenue, Columbus, 43210, OH, United States; Wilson B.E., Department of Kinesiology and Applied Physiology, University of Delaware, 540 South College Avenue, Newark, 19713, DE, United States; Shuler K.T., Department of Kinesiology and Applied Physiology, University of Delaware, 540 South College Avenue, Newark, 19713, DE, United States; Santos F.V., Department of Kinesiology and Applied Physiology, University of Delaware, 540 South College Avenue, Newark, 19713, DE, United States; Cabán C.T., Department of Neuroscience, Lewis Katz School of Medicine, Temple University, 3500 North Broad Street, Philadelphia, 19140, PA, United States; Jeka J.J., Department of Kinesiology and Applied Physiology, University of Delaware, 540 South College Avenue, Newark, 19713, DE, United States; Langford D., Department of Neuroscience, Lewis Katz School of Medicine, Temple University, 3500 North Broad Street, Philadelphia, 19140, PA, United States; Hudson M.B., Department of Kinesiology and Applied Physiology, University of Delaware, 540 South College Avenue, Newark, 19713, DE, United States","Background: Considering the potential cumulative effects of repetitive head impact (HI) exposure, we need sensitive biomarkers to track short- and long-term effects. Circulating small extracellular vesicles (sEVs) (<200 nm) traffic biological molecules throughout the body and may have diagnostic value as biomarkers for disease. The purpose of this study was to identify the microRNA (miRNA) profile in circulating sEVs derived from human plasma following repetitive HI exposure. Methods: Healthy adult (aged 18–35 years) soccer players were randomly assigned to one of 3 groups: the HI group performed 10 standing headers, the leg impact group performed 10 soccer ball trapping maneuvers over 10 min, and the control group did not participate in any soccer drills. Plasma was collected before testing and 24 h afterward, and sEVs were isolated and characterized via nanoparticle tracking analysis. Next-generation sequencing was utilized to identify candidate miRNAs isolated from sEVs, and candidate microRNAs were analyzed via quantitative polymerase chain reaction. In silico target prediction was performed using TargetScan (Version 7.0; targetscan.org) and miRWalk (http://mirwalk.umm.uni-heidelberg.de/) programs, and target validation was performed using luciferase reporter vectors with a miR-7844-5p mimic in human embryonic kidney (HEK) 293T/17 cells. Results: Plasma sEV concentration and size were not affected across time and group following repetitive HI exposure. After 24 h, the HI read count from next-generation sequencing showed a 4-fold or greater increase in miR-92b-5p, miR-423-5p, and miR-24-3p and a 3-fold or greater decrease in miR-7844-5p, miR-144-5p, miR-221-5p, and miR-22-3p. Analysis of quantitative polymerase chain reaction revealed that leg impact did not alter the candidate miRNA levels. To our knowledge, miR-7844-5p is a previously unknown miRNA. We identified 8 miR-7844-5p mRNA targets: protein phosphatase 1 regulatory inhibitor subunit 1B (PPP1R1B), LIM and senescent cell antigen-like domains 1 (LIMS1), autophagy-related 12 (ATG12), microtubule-associated protein 1 light chain 3 beta (MAP1LC3B), integrin subunit alpha-1 (ITGA1), mitogen-activated protein kinase 1 (MAPK1), glycogen synthase kinase 3β (GSK3β), and mitogen-activated protein kinase 8 (MAPK8). Conclusion: Collectively, these data indicate repetitive HI exposure alters plasma sEV miRNA content, but not sEV size or number. Furthermore, for the first time we demonstrate that previously unknown miR-7844-5p targets mRNAs known to be involved in mitochondrial apoptosis, autophagy regulation, mood disorders, and neurodegenerative disease. © 2020","Biomarker; Concussion; MicroRNA; Repetitive head impact exposure; Soccer heading","Adult; Biomarkers; Extracellular Vesicles; Female; High-Throughput Nucleotide Sequencing; Humans; Male; MicroRNAs; Real-Time Polymerase Chain Reaction; Soccer; Time Factors; Young Adult; autophagy related protein 12; complementary DNA; glycogen synthase kinase 3beta; integrin subunit alpha 1; lim and senescent cell antigen like domains 1; microRNA; microRNA 144; microRNA 22; microRNA 221; microRNA 24; microRNA 423; microRNA 7844; microRNA 92b; microtubule associated protein 1 light chain 3 beta; mitogen activated protein kinase 1; occludin; protein; protein phosphatase 1 regulatory inhibitor subunit 1b; protein ZO1; stress activated protein kinase 1; stress induced phosphoprotein 1 homology and u box containing protein 1; unclassified drug; biological marker; microRNA; MIRN144 microRNA, human; MIRN22 microRNA, human; MIRN221 microRNA, human; MIRN24 microRNA, human; MIRN423 microRNA, human; MIRN92 microRNA, human; 3' untranslated region; adult; African American; Article; Asian; biomechanics; Caucasian; computer model; concussion; controlled study; exosome; female; gastrocnemius muscle; head injury; HEK293T cell line; high throughput sequencing; human; human cell; in vitro study; luminescence; male; mood disorder; neurologic disease; particle size; priority journal; randomized controlled trial; real time polymerase chain reaction; RNA isolation; soccer player; young adult; blood; exosome; genetics; metabolism; physiology; soccer; time factor","Bailes J.E., Petraglia A.L., Omalu B.I., Nauman E., Talavage T., Role of subconcussion in repetitive mild traumatic brain injury, J Neurosurg, 119, pp. 1235-1245, (2013); Tarnutzer A.A., Straumann D., Brugger P., Feddermann-Demont N., Persistent effects of playing football and associated (subconcussive) head trauma on brain structure and function: a systematic review of the literature, Br J Sports Med, 51, pp. 1592-1604, (2017); 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Hudson; Department of Kinesiology and Applied Physiology, University of Delaware, Newark, 540 South College Avenue, 19713, United States; email: mbhudson@udel.edu","","Elsevier B.V.","20952546","","","33189894","English","J. Sport Health Sci.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85098130870" "Thomas C.; Dos’Santos T.; Comfort P.; Jones P.A.","Thomas, Christopher (56754565800); Dos’Santos, Thomas (57170712800); Comfort, Paul (26767602800); Jones, Paul A. (55308526600)","56754565800; 57170712800; 26767602800; 55308526600","Male and female soccer players exhibit different knee joint mechanics during pre-planned change of direction","2024","Sports Biomechanics","23","1","","118","131","13","8","10.1080/14763141.2020.1830160","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85094655790&doi=10.1080%2f14763141.2020.1830160&partnerID=40&md5=722b6caf437f92c52d49575bac17732b","Directorate of Sport, Exercise and Physiotherapy, University of Salford, Greater Manchester, Salford, United Kingdom","Thomas C., Directorate of Sport, Exercise and Physiotherapy, University of Salford, Greater Manchester, Salford, United Kingdom; Dos’Santos T., Directorate of Sport, Exercise and Physiotherapy, University of Salford, Greater Manchester, Salford, United Kingdom; Comfort P., Directorate of Sport, Exercise and Physiotherapy, University of Salford, Greater Manchester, Salford, United Kingdom; Jones P.A., Directorate of Sport, Exercise and Physiotherapy, University of Salford, Greater Manchester, Salford, United Kingdom","Change of direction manoeuvres is important in soccer and associated with non-contact anterior cruciate ligament injury, yet it is not known how the mechanics differentiate between males and females during 180° turns. Twenty-eight soccer players (14 males and 14 females) performed 180° turns with ground reaction forces collected over penultimate and final contacts. A two-way (contact × limb) multivariate analysis of variance (MANOVA) were run to examine differences between contact (penultimate and final) or limb (dominant and non-dominant) for sagittal plane hip, knee and ankle peak angles and moments, and frontal plane knee abduction moments and angles between sexes. Average horizontal GRF was increased on the dominant limb, compared to non-dominant and for the final contact compared to the penultimate contact. Knee abduction angles were increased in females compared to males, while the opposite was true for knee abduction moments. Statistically significant differences were evident, with increases in peak vertical GRF, peak hip flexion angle, peak knee flexion angle, peak knee extensor moment, and peak ankle dorsiflexion angle observed in the penultimate contact compared to final contact. The results indicate the penultimate contact during turns helps reduce loading on the final contact, yet male and female soccer players exhibit different knee joint mechanics during pre-planned change of direction. © 2020 Informa UK Limited, trading as Taylor & Francis Group.","agility; anterior cruciate ligament; injury; knee abduction moments; word","Anterior Cruciate Ligament; Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Female; Humans; Knee Joint; Male; Soccer; anterior cruciate ligament; anterior cruciate ligament injury; biomechanics; female; human; knee; male; soccer","Bell A.L., Brand R.A., Pedersen D.R., Prediction of hip joint centre location from external landmarks, Human Movement Science, 8, 1, pp. 3-16, (1989); Bencke J., Curtis D., Krogshede C., Jensen L.K., Bandholm T., Zebis M.K., Biomechanical evaluation of the side-cutting manoeuvre associated with ACL injury in young female handball players, Knee Surgery, Sports Traumatology, Arthroscopy, 21, 8, pp. 1876-1881, (2013); 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The effect of cutting angle on knee mechanics in invasion sport athletes, Journal of Biomechanics, 63, pp. 144-150, (2017); Sigward S.M., Cesar G.M., Havens K.L., Predictors of frontal plane knee moments during side-step cutting to 45 and 110 degrees in men and women: Implications for anterior cruciate ligament injury, Clinical Journal of Sport Medicine, 25, pp. 529-534, (2015); Sigward S.M., Pollard C.D., Havens K.L., The influence of sex and maturation on knee mechanics during side-step cutting, Medicine and Science in Sports and Exercise, 44, pp. 1497-1503, (2012); Stuelcken M.C., Mellifont D.B., Gorman A.D., Sayers M.G.L., Mechanisms of anterior cruciate ligament injuries in elite women’s netball: A systematic video analysis, Journal of Sports Sciences, 34, 16, pp. 1516-1522, (2016); Thomas C., Dos'Santos T., Kyriakidou I., Cuthbert M., Fields C., Jones P.A., An investigation into the effect of limb preference on knee mechanics and braking strategy during pivoting in female soccer players: An exploratory study, Presented at the The 8th Annual Strength and Conditioning Student Conference, (2017); Winter D.A., Biomechanics and motor control of human movement, (2009); Yu B., Lin C.F., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clinical Biomechanics, 21, pp. 297-305, (2006)","C. Thomas; Directorate of Sport, Exercise and Physiotherapy, University of Salford, Salford, Greater Manchester, United Kingdom; email: c.thomas2@edu.salford.ac.uk","","Routledge","14763141","","","33115317","English","Sports Biomech.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85094655790" "Sayed Mohammad W.; Ragaa Abdelraouf O.; Abdel-Aziem A.A.","Sayed Mohammad, Walaa (55750397300); Ragaa Abdelraouf, Osama (56019515400); Abdel-Aziem, Amr Almaz (53881053500)","55750397300; 56019515400; 53881053500","Concentric and eccentric strength of trunk muscles in osteitis pubis soccer players","2014","Journal of Back and Musculoskeletal Rehabilitation","27","2","","147","152","5","11","10.3233/BMR-130429","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84922393871&doi=10.3233%2fBMR-130429&partnerID=40&md5=60565bb32c872fb01c392a34319061cb","Department of Biomechanics, Faculty of Physical Therapy, Cairo University, 7 Ahmed Elziat Street, Bean Elsariat, El Dokki, Giza, Egypt","Sayed Mohammad W., Department of Biomechanics, Faculty of Physical Therapy, Cairo University, 7 Ahmed Elziat Street, Bean Elsariat, El Dokki, Giza, Egypt; Ragaa Abdelraouf O., Department of Biomechanics, Faculty of Physical Therapy, Cairo University, 7 Ahmed Elziat Street, Bean Elsariat, El Dokki, Giza, Egypt; Abdel-Aziem A.A., Department of Biomechanics, Faculty of Physical Therapy, Cairo University, 7 Ahmed Elziat Street, Bean Elsariat, El Dokki, Giza, Egypt","BACKGROUND AND OBJECTIVES: Osteitis pubis refers to a painful, inflammatory condition involving the pubic bones, pubic symphysis, and adjacent structures. So, the aims of the study were to evaluate the strength of trunk muscles of soccer players suffering from osteitis pubis, and to compare the agonist/antagonist ratio of trunk muscles in osteitis pubis athletes with that of healthy athletes. MATERIALS AND METHODS: Twenty-five soccer male athletes with osteitis pubis, and 25 healthy soccer athletes. Peak torque/body weight (PT/BW) was recorded from trunk muscles during isokinetic concentric and eccentric contraction modes at a speed of 120°/s for healthy and osteitis pubis soccer players. RESULTS: There was a significant decrease in concentric contraction of back muscles in osteitis pubis group (p=0.01). A significant decrease in eccentric contraction of abdominal muscles was also recorded in osteitis pubis group (p=0.008). Concentric abdominal/back muscles ratio was significantly higher in osteitis pubis group (p=0.016), with no significant difference in eccentric abdominal/back muscles ratio between both groups (p>0.05). CONCLUSION: Osteitis pubis group displayed concentric weakness of back muscle and eccentric weakness of abdominal muscles that lead to disturbance of the normal concentric abdominal/back ratio. © 2014 - IOS Press and the authors. All rights reserved.","isokinetic; Osteitis pubis; ratio; trunk muscles","Abdominal Muscles; Adolescent; Athletes; Athletic Injuries; Back Muscles; Biomechanical Phenomena; Humans; Male; Muscle Contraction; Muscle Weakness; Osteitis; Pubic Bone; Pubic Symphysis; Soccer; Torque; Torso; Young Adult; abdominal wall musculature; Article; athlete; back muscle; body weight; clinical article; concentric muscle contraction; controlled study; dynamometer; eccentric muscle contraction; human; inflammation; male; muscle strength; osteitis; osteitis pubis; priority journal; skeletal muscle; soccer; torque; velocity; adolescent; Athletic Injuries; biomechanics; complication; injuries; muscle contraction; muscle weakness; osteitis; pathophysiology; physiology; pubic bone; pubis symphysis; trunk; young adult","Cowan S.M., Schache A.G., Brukner P., Bennell K.L., Hodges P.W., Coburn P., Et al., Delayed onset of transverses abdominus in long-standing groin pain, Med Sci Sports Exer, 36, pp. 2040-2045, (2004); Verrall G.M., Hamilton I.A., Slavotinek J.P., Oakeshott R.D., Spriggins A.J., Barnes P.G., Et al., Hip joint range of motion reduction in sports-related chronic groin injury diagnosed as pubic bone stress injury, J Science Med Sport, 8, pp. 77-84, (2005); Biedert R.M., Warnke K., Meyer S., Symphysis syndrome in athletes: Surgical treatment for chronic lower abdominal, groin, and adductor pain in athletes, Clin J Sports Med, 13, pp. 278-284, (2003); Mandelbaum B., Mora S.A., Osteitis pubis, Operative Tech Sports Med, 13, pp. 62-67, (2005); Robinson P., Barron D.A., Parsons W., Grainger A.J., Schilders E.M., O'Connor P.J., Adductor-related groin pain in athletes: Correlation of MR imaging with clinical findings, Skeletal Radiol, 33, pp. 451-457, (2004); Verrall G.M., Slavotinek J.P., Fon G.T., Incidence of pubic bone marrow oedema in Australian rules football players: Relation to groin pain, Br J Sports Med, 35, pp. 28-33, (2001); Williams P.R., Thomas D.P., Downes E.M., Osteitis pubis and instability of the pubic symphysis. When nonoperative measures fail, Am J Sports Med, 28, pp. 350-355, (2000); Rodriguez C., Miguel A., Lima H., Heinrichs K., Osteitis pubis syndrome in the professional soccer athlete: A case report, J Athl Train, 36, pp. 437-440, (2001); Bradshaw C., Holmich P., Longstanding groin pain, Clinical Sports Medicine, pp. 405-425, (2007); Ekstrand J., Ringborg S., Surgery versus conservative treatment in soccer players with chronic groin pain: A prospective randomised study in soccer players, Eur J Sports Trauma, 23, pp. 141-145, (2001); Holt M.A., Keene J.S., Graf B.K., Helwig D.C., Treatment of osteitis pubis in athletes. Results of corticosteroid injections, Am J Sports Med, 23, pp. 601-606, (1995); McKim K., Taunton J., The effectiveness of compression shorts in the treatment of athletes with osteitis pubis, NZ J Sports Med, 29, pp. 70-73, (2001); Pham D., Scott K., Presentation of osteitis and osteomyelitis pubis as acute abdominal pain, Permanente J, 11, pp. 65-68, (2007); Pontaga I., Muscle strength imbalance in the hip joint caused by fast movements, Mech Composite Materials, 39, 4, pp. 365-368, (2003); Alexander M.J.L., Peak torque values for antagonist muscle groups and concentric and eccentric contraction types for elite sprinters, Arch Phys Med Rehabil, 71, 5, pp. 334-339, (1990); Dvir Z., Keating J.L., Trunk extension effort in patients with chronic low back pain dysfunction, Spine, 28, 7, pp. 685-692, (2003); Shirado O., Ito T., Kaneda K., Strax T.E., Concentric and eccentric strength of trunk muscles: Influence of test postures on strength and characteristics of patients with chronic low back pain, Arch Phys Med Rehabil, 76, 7, pp. 437-440, (1995); Cohen P., Chantraine A., Gobelet C., Ziltener J.L., Influence of testing position on lumbar isokinetic measurements, Ann Read Med Phys, 45, 1, pp. 12-18, (2002); Williams C.A., Singh M., Dynamics trunk strength of Canadian football players, soccer players, and middle to long distance runners, J Orthop Sports Phys Ther, 25, 4, pp. 271-276, (1997); Findley B.W., Brown L.E., Whitehurst M., Gilbert R., Groo D.R., O'Neal J., Sitting vs. standing isokinetic trunk extension and flexion performance differences, J Strength Cond Res, 14, 3, pp. 310-315, (2000); O'Donovan O., Cheung J., Catley M., Mc Gregor A.H., Struutton P.H., An investigation of leg and trunk strength and reaction times of hard-style martial arts practitioners, J Sports SciMed, 5, 2, pp. 5-12, (2006); Brown L.E., Whitehurst M., Load range, Brown LE: Isokinetics in Human Performance, pp. 97-121, (2000); Kachingwe A., Grech S., Proposed algorithm for the management of athletes with athletic pubalgia: A case series, J Orthop Sports Phys Ther, 38, 12, pp. 768-780, (2008); Delahaye H., Laffargue P., Voisin P., Weissland T., Letombe A., Dupont L., Vanvelcenaher J., Evaluation of athletes with longstanding groin pain, Isokin Exer Sci, 11, 1, pp. 45-47, (2003); McCarty A., Vicenzino B., Treatment of osteitis pubis via the pelvic muscles, Manual Therapy, 8, 4, pp. 257-260, (2003); Conneely M., O'Sullivan K., Edmondston E., Dissection of gluleus maximus and medius with respect to their suggested roles in pelvic and hip stability: Implications for rehabilitation, Phys Ther Sport, 7, pp. 171-180, (2006); Van Ingen G.J., De Koning J.J., De Groot G., Optimization of sprinting performance of running, cycling, and speed skating, Sports Med, 14, 4, pp. 259-275, (1994); Bernard J.C., Bard R., Pujol A., Combey A., Boussard D., Begue C., Salghetti A.M., Muscle assessment in healthy teenagers comparison with teenagers with low back pain, Ann Read Med Phys, 51, 4, pp. 274-283, (2008); Dervisevic E., Hadzic V., Burger H., Reproducibility of trunk isokinetic strength findings in healthy individuals, Isokin Exer Sci, 15, 2, pp. 99-109, (2007); Drapala G., Trzaskoma Z., Maximal strength of trunk flexors and extensors in men and women with low back pain syndrome, Adv Rehabil, 2, pp. 24-30, (2006); Meeuwisse W.H., Assessing causation in sport injury: A multifactorial model, Clin J Sport Med, 4, pp. 166-170, (1994); Pizzari T., Coburn P.T., Crow J.F., Prevention and management of osteitis pubis in the Australian football league, Phys Ther Sport, 9, pp. 117-125, (2008); Paulis F., Cacchio A., Michelini O., Damiani A., Saggini R., Sports injuries in the pelvis and hip: Diagnostic imaging, Eur J Radiol, 27, pp. S49-S59, (1998); Duchateau J., Enoka R., Neural control of shortening and lengthening contractions: Influence of task constrains, J Physiol, 24, pp. 5853-5864, (2008); Quinn A., Hip and groin pain: Physiotherapy and rehabilitation issues, The Open Sports Medicine J, 4, pp. 93-107, (2010)","","","IOS Press","10538127","","JBMRF","23963270","English","J. Back Musculoskelet. Rehabil.","Article","Final","","Scopus","2-s2.0-84922393871" "Zhang Q.; Morel B.; Trama R.; Hautier C.A.","Zhang, Qingshan (57219965780); Morel, Baptiste (43761425800); Trama, Robin (57193950742); Hautier, Christophe A. (6602726583)","57219965780; 43761425800; 57193950742; 6602726583","Influence of Fatigue on the Rapid Hamstring/Quadriceps Force Capacity in Soccer Players","2021","Frontiers in Physiology","12","","627674","","","","10","10.3389/fphys.2021.627674","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101250360&doi=10.3389%2ffphys.2021.627674&partnerID=40&md5=a3143d1e0eae69b6a6f5cafeff111e40","Laboratoire Interuniversitaire de Biologie de la Motricité, Université Claude Bernard Lyon 1, Villeurbanne, France; Laboratoire Interuniversitaire de Biologie de la Motricité, Université Savoie Mont Blanc, Chambéry, France","Zhang Q., Laboratoire Interuniversitaire de Biologie de la Motricité, Université Claude Bernard Lyon 1, Villeurbanne, France; Morel B., Laboratoire Interuniversitaire de Biologie de la Motricité, Université Savoie Mont Blanc, Chambéry, France; Trama R., Laboratoire Interuniversitaire de Biologie de la Motricité, Université Claude Bernard Lyon 1, Villeurbanne, France; Hautier C.A., Laboratoire Interuniversitaire de Biologie de la Motricité, Université Claude Bernard Lyon 1, Villeurbanne, France","The objective of this study was to examine the effect of fatigue on maximal and rapid force capacities and muscular activation of the knee extensors and flexors. Seventeen professional soccer players volunteered to participate in this study. Peak torque (Tpeak) and rate of torque development (RTD) of knee flexor (90°. s–1, −30°. s–1) and extensor (90°. s–1) muscles were measured before and after fatigue (i.e., 30 maximal knee extension and flexion repetitions at 180°s–1) performed on an isokinetic dynamometer. Hamstring to quadriceps peak strength and RTD ratios were calculated. Besides, using surface EMG, the mean level of activation (RMSmean), Rate of EMG Rise (RER), and EMG Frequency-Time maps were measured on quadriceps and hamstring muscles. Following fatigue, Tpeak, RTD, RER declined significantly in the two muscle groups (all p < 0.05) without modification of RMSmean. No decrease in conventional and functional H/Q ratios was observed after fatigue except for a significant increase in the Hecc30/Qcon180 ratios (1.03 ± 0.19 vs. 1.36 ± 0.33, p < 0.001). Besides, the RTD H/Q ratios decreased significantly after fatigue, and the statistical parametric mapping analysis (SPM) performed on the EMG/angle curves, and EMG Frequency-Time maps showed that fatigue strongly influenced the muscle activation during the first 100 ms of the movement, following the higher EMG frequency component shift toward the lower frequency component. Our results show that the reduction of RTD and RER during the first 100 ms of the contraction after fatigue exercise makes more sense than any H/Q ratio modification in understanding injury risk in soccer players. © Copyright © 2021 Zhang, Morel, Trama and Hautier.","fatigue; H/Q ratio; peak torque; rate of EMG rise; rate of torque development","adult; Article; biomechanics; controlled study; disease risk assessment; electromyogram; extensor muscle; flexor muscle; functional status; hamstring muscle; human; human experiment; knee function; muscle excitation; muscle fatigue; muscle injury; muscle isometric contraction; muscle strength; musculoskeletal system parameters; normal human; professional athlete; quadriceps femoris muscle; soccer player; torque; volunteer","Aagaard P., Simonsen E.B., Andersen J.L., Magnusson P., Dyhre-Poulsen P., Increased rate of force development and neural drive of human skeletal muscle following resistance training, J. Appl. Physiol, 93, pp. 1318-1326, (2002); Alhammoud M., Morel B., Girard O., Racinais S., Sevrez V., Germain A., Et al., Hypoxia and fatigue impair rapid torque development of knee extensors in elite alpine skiers, Front. Physiol, 9, 962, (2018); Alhammoud M., Morel B., Hansen C., Wilson M., Mecca R., Nael E., Et al., Discipline and sex differences in angle-specific isokinetic analysis in elite skiers, Int. J. Sports Med, 40, pp. 317-330, (2019); Andersen L.L., Aagaard P., Influence of maximal muscle strength and intrinsic muscle contractile properties on contractile rate of force development, Eur. J. Appl. Physiol, 96, pp. 46-52, (2006); Angelozzi M., Madama M., Corsica C., Calvisi V., Properzi G., McCaw S.T., Et al., Rate of force development as an adjunctive outcome measure for return-to-sport decisions after anterior cruciate ligament reconstruction, J. Orthop. Sports Phys. Ther, 42, pp. 772-780, (2012); Baroni B.M., Ruas C.V., Ribeiro-Alvares J.B., Pinto R.S., Hamstring-to-quadriceps torque ratios of professional male soccer players: a systematic review, J. Strength Condition. Res, 34, pp. 281-293, (2020); Cohen D.D., Zhao B., Okwera B., Matthews M.J., Delextrat A., Angle-specific eccentric hamstring fatigue after simulated soccer, Int. J. Sports Physiol. Perform, 10, pp. 325-331, (2015); Coratella G., Bellin G., Beato M., Schena F., Fatigue affects peak joint torque angle in hamstrings but not in quadriceps, J. Sports Sci, 33, pp. 1276-1282, (2015); Correia P., Santos P., Mil-Homens P., Gomes M., Dias A., Valamatos M.J., Rapid hamstrings to quadriceps ratio at long muscle lengths in professional football players with previous hamstring strain injury, Eur. J. Sport Sci, 20, pp. 1405-1413, (2020); Croce R.V., Miller J.P., Angle- and velocity-specific alterations in torque and semg activity of the quadriceps and hamstrings during isokinetic extension-flexion movements, Electromyogr. Clin. Neurophysiol, 46, pp. 83-100, (2006); Croisier J.L., Ganteaume S., Binet J., Genty M., Ferret J.M., Strength imbalances and prevention of hamstring injury in professional soccer players: a prospective study, Am. J. Sports Med, 36, pp. 1469-1475, (2008); De Ruiter C.J., De Haan A., Similar effects of cooling and fatigue on eccentric and concentric force-velocity relationships in human muscle, J. Appl. Physiol, 90, pp. 2109-2116, (2001); De Ste Croix M., ElNagar Y.O., Iga J., Ayala F., James D., The impact of joint angle and movement velocity on sex differences in the functional hamstring/quadriceps ratio, Knee, 24, pp. 745-750, (2017); Edman K.A., Josephson R.K., Determinants of force rise time during isometric contraction of frog muscle fibres, J. Physiol, 580, Pt.3, pp. 1007-1019, (2007); Ekstrand J., Hagglund M., Walden M., Epidemiology of muscle injuries in professional football (soccer), Am. J. Sports Med, 39, pp. 1226-1232, (2011); Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: the UEFA injury study, Br. J. Sports Med, 45, pp. 553-558, (2011); Evangelidis P.E., Massey G.J., Ferguson R.A., Wheeler P.C., Pain M.T.G., Folland J.P., The functional significance of hamstrings composition: is it really a “fast” muscle group?, Scand. J. Med. Sci. Sports, 27, pp. 1181-1189, (2017); Evangelidis P.E., Pain M.T., Folland J., Angle-specific hamstring-to-quadriceps ratio: a comparison of football players and recreationally active males, J. Sports Sci, 33, pp. 309-319, (2015); Garrett W.E., Califf J.C., Bassett F.H., Histochemical correlates of hamstring injuries, Am. J. Sports Med, 12, pp. 98-103, (1984); Grazioli R., Lopez P., Andersen L.L., Machado C.L.F., Pinto M.D., Cadore E.L., Et al., Hamstring rate of torque development is more affected than maximal voluntary contraction after a professional soccer match, Eur. J. Sport Sci, 19, pp. 1336-1341, (2019); Greco C.C., da Silva W.L., Camarda S.R.A., Denadai B.S., Fatigue and rapid hamstring/quadriceps force capacity in professional soccer players, Clin. Physiol. Funct. Imaging, 33, pp. 18-23, (2013); Hautier C.A., Linossier M.T., Belli A., Lacour J.R., Arsac L.M., Optimal velocity for maximal power production in non-isokinetic cycling is related to muscle fibre type composition, Eur. J. Appl. Physiol. Occup. Physiol, 74, pp. 114-118, (1996); Hawkins R.D., Hulse M.A., Wilkinson C., Hodson A., Gibson M., The association football medical research programme: an audit of injuries in professional football, Br. J. Sports Med, 35, pp. 43-47, (2001); Ishoi L., Aagaard P., Nielsen M.F., Thornton K.B., Krommes K.K., Holmich P., Et al., The influence of hamstring muscle peak torque and rate of torque development for sprinting performance in football players: a cross-sectional study, Int. J. Sports Physiol. Perform, 14, pp. 665-673, (2019); Kawabata Y., Senda M., Oka T., Yagata Y., Takahara Y., Nagashima H., Et al., Measurement of fatigue in knee flexor and extensor muscles, Acta Med. Okayama, 54, pp. 85-90, (2000); Krustrup P., Mohr M., Steensberg A., Bencke J., Kjaer M., Bangsbo J., Muscle and blood metabolites during a soccer game: implications for sprint performance, Med. Sci Sports Exerc, 38, pp. 1165-1174, (2006); Lee J.W.Y., Mok K.M., Chan H.C.K., Yung P.S.H., Chan K.M., Eccentric hamstring strength deficit and poor hamstring-to-quadriceps ratio are risk factors for hamstring strain injury in football: A prospective study of professional players, J. Sci. Med. Sport, 21, pp. 789-793, (2018); Lilly J.M., Olhede S.C., Higher-order properties of analytic wavelets, IEEE Trans. Signal Process, 57, pp. 146-160, (2009); Maffiuletti N.A., Aagaard P., Blazevich A.J., Folland J., Tillin N., Duchateau J., Rate of force development: physiological and methodological considerations, Eur. J. Appl. Physiol, 116, pp. 1091-1116, (2016); Marshall P.W., Lovell R., Jeppesen G.K., Andersen K., Siegler J.C., Hamstring muscle fatigue and central motor output during a simulated soccer match, PLoS One, 9, e102753, (2014); Morel B., Hautier C.A., The neuromuscular fatigue induced by repeated scrums generates instability that can be limited by appropriate recovery, Scand. J. Med. Sci. Sports, 27, pp. 209-216, (2017); Morel B., Rouffet D.M., Saboul D., Rota S., Clemencon M., Hautier C.A., Peak torque and rate of torque development influence on repeated maximal exercise performance: contractile and neural contributions, PLoS One, 10, e0119719, (2015); Nichols T.E., Holmes A.P., Nonparametric permutation tests for functional neuroimaging: a primer with examples, Hum. Brain Mapp, 15, pp. 1-25, (2002); Parcell A.C., Sawyer R.D., Tricoli V.A., Chinevere T.D., Minimum rest period for strength recovery during a common isokinetic testing protocol, Med. Sci. Sports Exerc, 34, pp. 1018-1022, (2002); Pataky T.C., Generalized n-dimensional biomechanical field analysis using statistical parametric mapping, J. Biomech, 43, pp. 1976-1982, (2010); Pataky T.C., Robinson M.A., Vanrenterghem J., Vector field statistical analysis of kinematic and force trajectories, J. Biomech, 46, pp. 2394-2401, (2013); Rodriguez-Rosell D., Pareja-Blanco F., Aagaard P., Gonzalez-Badillo J.J., Physiological and methodological aspects of rate of force development assessment in human skeletal muscle, Clin. Physiol. Funct. Imaging, 38, pp. 743-762, (2018); Sangnier S., Tourny-Chollet C., Comparison of the decrease in strength between hamstrings and quadriceps during isokinetic fatigue testing in semiprofessional soccer players, Int. J. Sports Med, 28, pp. 952-957, (2007); Sangnier S., Tourny-Chollet C., Study of the fatigue curve in quadriceps and hamstrings of soccer players during isokinetic endurance testing, J. Strength Cond. Res, 22, pp. 1458-1467, (2008); Small K., McNaughton L., Greig M., Lovell R., The effects of multidirectional soccer-specific fatigue on markers of hamstring injury risk, J. Sci. Med. Sport, 13, pp. 120-125, (2010); Small K., McNaughton L.R., Greig M., Lohkamp M., Lovell R., Soccer fatigue, sprinting and hamstring injury risk, Int. J. Sports Med, 30, pp. 573-578, (2009); Walden M., Hagglund M., Magnusson H., Ekstrand J., ACL injuries in men’s professional football: a 15-year prospective study on time trends and return-to-play rates reveals only 65% of players still play at the top level 3 years after ACL rupture, Br. J. Sports Med, 50, pp. 744-750, (2016); Zebis M.K., Andersen L.L., Bencke J., Kjaer M., Aagaard P., Identification of athletes at future risk of anterior cruciate ligament ruptures by neuromuscular screening, Am. J. Sports Med, 37, pp. 1967-1973, (2009); Zebis M.K., Andersen L.L., Ellingsgaard H., Aagaard P., Rapid hamstring/quadriceps force capacity in male vs. female elite soccer players, J. Strength Cond. Res, 25, pp. 1989-1993, (2011)","Q. Zhang; Laboratoire Interuniversitaire de Biologie de la Motricité, Université Claude Bernard Lyon 1, Villeurbanne, France; email: zhang.qingshan@hotmail.com","","Frontiers Media S.A.","1664042X","","","","English","Front. Physiol.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85101250360" "Castillo D.; Yanci J.; Cámara J.","Castillo, Daniel (56946428100); Yanci, Javier (55755789700); Cámara, Jesús (54390773100)","56946428100; 55755789700; 54390773100","Impact of Official Matches on Soccer Referees' Power Performance","2018","Journal of Human Kinetics","61","1","","131","140","9","9","10.1515/hukin-2017-0116","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85045048312&doi=10.1515%2fhukin-2017-0116&partnerID=40&md5=41cb363d8532e74201f98375df9b7b93","Faculty of Education and Sport, University of the Basque Country, UPV/EHU, Lasarte, 71, Vitoria-Gasteiz, 01007, Spain","Castillo D., Faculty of Education and Sport, University of the Basque Country, UPV/EHU, Lasarte, 71, Vitoria-Gasteiz, 01007, Spain; Yanci J., Faculty of Education and Sport, University of the Basque Country, UPV/EHU, Lasarte, 71, Vitoria-Gasteiz, 01007, Spain; Cámara J., Faculty of Education and Sport, University of the Basque Country, UPV/EHU, Lasarte, 71, Vitoria-Gasteiz, 01007, Spain","The evaluation of match officials' neuromuscular performance is now an important consideration and the vertical jump test is considered suitable for assessing lower limb power, partly because it is directly related to refereeing. The aim of this study, therefore, was to determine the effect of soccer matches on match officials' vertical jump performance by assessing various biomechanical variables. Eighteen field referees (FRs) and 36 assistant referees (ARs) who officiated in 18 official matches participated in this study. Before the match, at half time and immediately after the match, officials performed two countermovement jumps. Flight phase time (FT), maximum force production (MFpropulsion), time to production of maximum force (TMFpropulsion), production of maximum power (MP), maximum landing force (MFlanding) and time to stabilization (TTS) were calculated for all jumps. There was a tendency for match officials' jumping performance to improve after matches than beforehand (FR: effect size (ES) = 0.19 ± 0.36, possibly trivial; AR: ES = 0.07 ± 0.17, likely trivial). There were also likely small and very likely moderate differences between FRs' MP in pre-match and half-time jumps (ES = 0.46 ± 0.47) and in their pre- and post-match jumps (ES = 0.71 ± 0.48). These results indicate that refereeing soccer matches does not reduce vertical jump performance; the subsequent neuromuscular fatigue is not sufficient to affect landing technique. © 2018 Editorial Committee of Journal of Human Kinetics 2018.","biomechanics; competition; fatigue; strength","","Bangsbo J., Iaia F.M., Krustrup P., Metabolic response and fatigue in soccer, Int J Sports Physiol Perform, 2, pp. 111-127, (2007); Bangsbo J., Mohr M., Krustrup P., Physical and metabolic demands of training and match-play in the elite football player, J Sports Sci, 24, pp. 665-674, (2006); Barnes C., Archer D.T., Hogg B., Bush M., Bradley P.S., The evolution of physical and technical performance parameters in the English Premier League, Int J Sports Med, 35, pp. 1095-1100, (2014); Boullosa D.A., Tuimil J.L., Postactivation potentiation in distance runners after two different field running protocols, J Strength Cond Res, 23, pp. 1560-1565, (2009); Boullosa D.A., Tuimil J.L., Alegre L.M., Iglesias E., Lusquinos F., Concurrent fatigue and potentiation in endurance athletes, Int J Sports Physiol Perform, 6, pp. 82-93, (2011); Bradley P.S., Sheldon W., Wooster B., Olsen P., Boanas P., Krustrup P., High-intensity running in English FA Premier League soccer matches, J Sports Sci, 27, pp. 159-168, (2009); Bressel E., Cronin J., The landing phase of a jump: Strategies to minimize injuries, J Phys Educ, Recre Dance, 76, pp. 31-47, (2005); Camara J., Diaz F., Anza M.S., Mejuto G., Puente A., Iturriaga G., Fernandez J.R., The effect of patellar taping on some landing characteristics during counter movement jumps in healthy subjects, J Sports Sci Med, 10, pp. 707-711, (2011); Castillo D., Yanci J., Camara J., Weston M., The influence of soccer match play on physiological and physical performance measures in soccer referees and assistant referees, J Sports Sci, 34, 6, pp. 557-563, (2016); Cortis C., Tessitore A., Lupo C., Perroni F., Pesce C., Capranica L., Changes in jump, sprint, and coordinative performances after a senior soccer match, J Strength Cond Res, 27, pp. 2989-2996, (2013); Cortis C., Tessitore A., Lupo C., Pesce C., Fossile E., Figura F., Capranica L., Inter-limb coordination, strength, jump, and sprint performances following a youth men's basketball game, J Strength Cond Res, 25, pp. 135-142, (2011); 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Hopkins W.G., Marshall S.W., Batterham A.M., Hanin J., Progressive statistics for studies in sports medicine and exercise science, Med Sci Sports Exer, 41, pp. 3-13, (2009); Krustrup P., Mohr M., Steensberg A., Bencke J., Kjaer M., Bangsbo J., Muscle metabolites during a football match in relation to a decreased sprinting ability, J Sports Sci, 22, 6, (2004); Krustrup P., Bangsbo J., Physiological demands of top-class soccer refereeing in relation to physical capacity: Effect of intense intermittent exercise training, J Sports Sci, 19, 11, pp. 881-891, (2001); Krustrup P., Helsen W., Randers M.B., Christensen J.F., MacDonald C., Rebelo A.N., Bangsbo J., Activity profile and physical demands of football referees and assistant referees in international games, J Sports Sci, 27, pp. 1167-1176, (2009); Krustrup P., Zebis M., Jensen J.M., Mohr M., Game-induced fatigue patterns in elite female soccer, J Strength Cond Res, 24, pp. 437-441, (2010); Mallo J., Navarro E., Garcia-Aranda J.M., Gilis B., Helsen W., Analysis of the kinematical demands imposed on top-class assistant referees during competitive soccer matches, J Strength Cond Res, 22, pp. 235-242, (2008); 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Povoas S.C., Ascensao A.A., Magalhaes J., Seabra A.F., Krustrup P., Soares J.M., Rebelo A.N., Analysis of fatigue development during elite Male handball matches, J Strength Cond Res, 28, pp. 2640-2648, (2014); Rojano D., Rodriguez E.C., Berral F.J., Analysis of the vertical ground reaction forces and temporal factors in the landing phase of a countermovement jump, J Sports Sci Med, 9, pp. 282-287, (2010); Seegmiller J.G., McCaw S.T., Ground reaction forces among gymnasts and recreational athletes in drop landings, J Athl Train, 38, pp. 311-314, (2003); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer, Sports Medicine, 35, 6, pp. 501-536, (2005); Stone M.H., O'Bryant H.S., McCoy L., Coglianese R., Lehmkuhl M., Schilling B., Power and maximum strength relationships during performance of dynamic and static weighted jumps, J Strength Cond Res, 17, pp. 140-147, (2003); Tessitore A., Cortis C., Meeusen R., Capranica L., Power performance of soccer referees before, during, and after official matches, J Strength Cond Res, 21, pp. 1183-1187, (2007); Thorlund J.B., Aagaard P., Madsen K., Rapid muscle force capacity changes after soccer match play, Int J Sports Med, 30, pp. 273-278, (2009); Weston M., Match performances of soccer referees: The role of sports science, Mov Sport Sci/Sci Mot, 87, pp. 113-117, (2014); Weston M., Castagna C., Impellizzeri F.M., Bizzini M., Williams A.M., Gregson W., Science and medicine applied to soccer refereeing an update, Sports Med, 42, pp. 615-631, (2012); Weston M., Castagna C., Impellizzeri F.M., Rampinini E., Abt G., Analysis of physical match performance in English Premier League soccer referees with particular reference to first half and player work rates, J Sci Med Sport, 10, pp. 390-397, (2007); Weston M., Drust B., Gregson W., Intensities of exercise during match-play in FA Premier League referees and players, J Sports Sci, 29, pp. 527-532, (2011)","D. Castillo; Faculty of Education and Sport, University of the Basque Country, UPV/EHU, Vitoria-Gasteiz, Lasarte, 71, 01007, Spain; email: daniel.castillo@ehu.es","","Polish Academy of Science, Committee of Physical Culture","16405544","","","","English","J. Hum. Kinet.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85045048312" "Mihalik J.P.; Amalfe S.A.; Roby P.R.; Ford C.B.; Lynall R.C.; Riegler K.E.; Teel E.F.; Wasserman E.B.; Putukian M.","Mihalik, Jason P. (8428192600); Amalfe, Stephanie A. (57219540103); Roby, Patricia R. (57216524739); Ford, Cassie B. (57200201675); Lynall, Robert C. (55346075000); Riegler, Kaitlin E. (57208820086); Teel, Elizabeth F. (55748774800); Wasserman, Erin B. (55897867400); Putukian, Margot (7004220392)","8428192600; 57219540103; 57216524739; 57200201675; 55346075000; 57208820086; 55748774800; 55897867400; 7004220392","Sex and Sport Differences in College Lacrosse and Soccer Head Impact Biomechanics","2020","Medicine and Science in Sports and Exercise","52","11","","2349","2356","7","9","10.1249/MSS.0000000000002382","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85093705920&doi=10.1249%2fMSS.0000000000002382&partnerID=40&md5=54ad893dd62c414925c6be7d84cc19fb","Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina, Chapel Hill, NC, United States; Curriculum in Human Movement Science, Department of Allied Health Sciences, School of Medicine, University of North Carolina, Chapel Hill, NC, United States; Athletic Medicine, University Health Services, Princeton University, Princeton, NJ, United States; School of Psychology, Fairleigh Dickinson University, Teaneck, NJ, United States; Department of Population Health Sciences, Duke University School of Medicine, Durham, NC, United States; Department of Kinesiology, University of Georgia, Athens, GA, United States; Department of Psychology, Pennsylvania State University, State College, PA, United States; School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada; Injury Surveillance and Analysis, Iqvia, Durham, NC, United States; Department of Family Medicine and Community Health, Robert Wood Johnson Medical School, Rutgers University, New Brunswick, NJ, United States","Mihalik J.P., Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina, Chapel Hill, NC, United States, Curriculum in Human Movement Science, Department of Allied Health Sciences, School of Medicine, University of North Carolina, Chapel Hill, NC, United States; Amalfe S.A., Athletic Medicine, University Health Services, Princeton University, Princeton, NJ, United States, School of Psychology, Fairleigh Dickinson University, Teaneck, NJ, United States; Roby P.R., Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina, Chapel Hill, NC, United States, Curriculum in Human Movement Science, Department of Allied Health Sciences, School of Medicine, University of North Carolina, Chapel Hill, NC, United States; Ford C.B., Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina, Chapel Hill, NC, United States, Department of Population Health Sciences, Duke University School of Medicine, Durham, NC, United States; Lynall R.C., Department of Kinesiology, University of Georgia, Athens, GA, United States; Riegler K.E., Athletic Medicine, University Health Services, Princeton University, Princeton, NJ, United States, Department of Psychology, Pennsylvania State University, State College, PA, United States; Teel E.F., School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada; Wasserman E.B., Injury Surveillance and Analysis, Iqvia, Durham, NC, United States; Putukian M., Athletic Medicine, University Health Services, Princeton University, Princeton, NJ, United States, Department of Family Medicine and Community Health, Robert Wood Johnson Medical School, Rutgers University, New Brunswick, NJ, United States","Purpose Sport-related head impact biomechanics research has been male-centric and focused primarily on American football and ice hockey, which do not address popular sports in which both sexes participate. The purpose of this study was to quantify college female and male lacrosse and soccer head impact biomechanics. Methods Head impact biomechanics were collected from college lacrosse and soccer players across two Division 1 college athletic programs (96 female athletes, 141 male athletes; age, 19.8 ± 1.3 yr; height, 174.8 ± 9.2 cm; mass, 72.4 ± 11.7 kg). We deployed helmetless head impact measurement devices (X2 Biosystems xPatch) before each event. Peak linear and rotational accelerations were log-transformed for random intercepts general linear mixed models, and subsequently categorized based on impact magnitude for additional categorical analyses. Results Most linear (69.4%) and rotational (72.3%) head impact accelerations sustained by our study cohort were categorized as mild. On average, male athletes sustained impacts with higher linear accelerations than females (P = 0.04), and lacrosse athletes sustained higher linear acceleration impacts than soccer athletes (P = 0.023). Soccer athletes sustained significantly higher-magnitude impacts during competitions versus practices (linear, P < 0.001, rotational, P < 0.001), whereas lacrosse athletes sustained higher-magnitude impacts during practices versus competition (linear, P < 0.001; rotational, P < 0.001). Male athletes sustained higher accelerations in competitions versus practice (linear, P = 0.004; rotational, P < 0.001), whereas female athletes sustained higher accelerations in practice versus competitions (linear, P < 0.001; rotational, P = 0.02). There were no interactions between sex and sport on impact magnitude. Conclusions Male athletes and lacrosse athletes experience higher-magnitude head impacts. Given the limited literature in this area, future research should continue characterizing head impact biomechanics in women's and nonhelmeted sports as well as validate nonhelmeted head impact technologies. © Lippincott Williams & Wilkins.","CONCUSSION; FOOTBALL; HEAD IMPACT FORCES; INJURY PREVENTION; SPORTS INJURY; SPORTS SAFETY","Adolescent; Adult; Athletes; Athletic Injuries; Biomechanical Phenomena; Cohort Studies; Craniocerebral Trauma; Female; Head; Head Protective Devices; Humans; Male; Prospective Studies; Racquet Sports; Sex Factors; Soccer; Universities; Young Adult; adolescent; adult; athlete; biomechanics; cohort analysis; female; head; head injury; human; male; physiology; prospective study; protective helmet; racquet sport; sex factor; soccer; sport injury; university; young adult","Pierpoint L.A., Caswell S.V., Walker N., Et al., The first decade of web-based sports injury surveillance: Descriptive epidemiology of injuries in us high school girls' lacrosse (2008-2009 through 2013-2014) and national collegiate athletic association women's lacrosse (2004-2005 through 2013-2014), J Athl Train., 54, 1, pp. 42-54, (2019); Roos K.G., Wasserman E.B., Dalton S.L., Et al., Epidemiology of 3825 injuries sustained in six seasons of National Collegiate Athletic Association men's and women's soccer (2009/2010-2014/2015), Br J Sports Med., 51, 13, pp. 1029-1034, (2017); Kerr Z.Y., Quigley A., Yeargin S.W., Et al., The epidemiology of NCAA men's lacrosse injuries, 2009/10-2014/15 academic years, Epidemiol., 4, 1, (2017); Gessel L.M., Fields S.K., Collins C.L., Dick R.W., Comstock R.D., Concussions among United States high school and collegiate athletes, J Athl Train., 42, 4, pp. 495-503, (2007); Covassin T., Swanik C.B., Sachs M.L., Sex differences and the incidence of concussions among collegiate athletes, J Athl Train., 38, 3, pp. 238-244, (2003); Lincoln A.E., Hinton R.Y., Almquist J.L., Lager S.L., Dick R.W., Head, face, and eye injuries in scholastic and collegiate lacrosse: A 4-year prospective study, Am J Sports Med., 35, 2, pp. 207-215, (2007); Zuckerman S.L., Kerr Z.Y., Yengo-Kahn A., Wasserman E., Covassin T., Solomon G.S., Epidemiology of sports-related concussion in NCAA athletes from 2009-2010 to 2013-2014: Incidence, recurrence, and mechanisms, Am J Sports Med., 43, 11, pp. 2654-2662, (2015); Mihalik J.P., Bell D.R., Marshall S.W., Guskiewicz K.M., Measurement of head impacts in collegiate football players: An investigation of positional and event-type differences, Neurosurgery., 61, 6, pp. 1229-1235, (2007); Mihalik J.P., Guskiewicz K.M., Marshall S.W., Blackburn J.T., Cantu R.C., Greenwald R.M., Head impact biomechanics in youth hockey: Comparisons across playing position, event types, and impact locations, Ann Biomed Eng., 40, 1, pp. 141-149, (2012); Moore R.D., Lepine J., Ellemberg D., The independent influence of concussive and sub-concussive impacts on soccer players' neurophysiological and neuropsychological function, J Psychophysiol., 112, pp. 22-30, (2017); Stewart W.F., Kim N., Ifrah C.S., Et al., Symptoms from repeated intentional and unintentional head impact in soccer players, Neurology., 88, 9, pp. 901-908, (2017); O'Connor K.L., Rowson S., Duma S.M., Broglio S.P., Head-impactmeasurement devices: A systematic review, J Athl Train., 52, 3, pp. 206-227, (2017); Ocwieja K.E., Mihalik J.P., Marshall S.W., Schmidt J.D., Trulock S.C., Guskiewicz K.M., The effect of play type and collision closing distance on head impact biomechanics, Ann Biomed Eng., 40, 1, pp. 90-96, (2012); Caswell S.V., Lincoln A.E., Stone H., Et al., Characterizing verified head impacts in high school girls' lacrosse, Am J Sports Med., (2017); Cortes N., Lincoln A.E., Myer G.D., Et al., Video analysis verification of head impact events measured by wearable sensors, Am J Sports Med., 45, 10, pp. 2379-2387, (2017); Marchesseault E.R., Nguyen D., Spahr L., Beals C., Razak B., Rosene J.M., Head impacts and cognitive performance in men's lacrosse, Phys Sportsmed., 46, 3, pp. 324-330, (2018); O'Day K.M., Koehling E.M., Vollavanh L.R., Et al., Comparison of head impact location during games and practices in Division III men's lacrosse players, Clin Biomech (Bristol, Avon)., 43, pp. 23-27, (2017); Lamond L.C., Caccese J.B., Buckley T.A., Glutting J., Kaminski T.W., Linear acceleration in direct head contact across impact type, player position, and playing scenario in collegiate women's soccer players, J Athl Train., 53, 2, pp. 115-121, (2018); Lynall R.C., Clark M.D., Grand E.E., Et al., Head impact biomechanics in women's college soccer, Med Sci Sports Exerc., 48, 9, pp. 1772-1778, (2016); Camarillo D.B., Shull P.B., Mattson J., Shultz R., Garza D., An instrumented mouthguard for measuring linear and angular head impact kinematics in American football, Ann Biomed Eng., 41, 9, pp. 1939-1949, (2013); McCuen E., Svaldi D., Breedlove K., Et al., Collegiate women's soccer players suffer greater cumulative head impacts than their high school counterparts, J Biomech., 48, 13, pp. 3720-3723, (2015); Cummiskey B., Schiffmiller D., Talavage T.M., Et al., Reliability and accuracy of helmet-mounted and head-mounted devices used to measure head accelerations, Proc Inst Mech Eng P J Sports Eng Technol., 231, 2, pp. 144-153, (2017); Tyson A.M., Duma S.M., Rowson S., Laboratory evaluation of low-cost wearable sensors for measuring head impacts in sports, J Appl Biomech., 34, 4, pp. 320-326, (2018); Guskiewicz K.M., McCrea M., Marshall S.W., Et al., Cumulative effects associated with recurrent concussion in collegiate football players: The NCAA Concussion Study, JAMA., 290, 19, pp. 2549-2555, (2003); McKee A.C., Cantu R.C., Nowinski C.J., Et al., Chronic traumatic encephalopathy in athletes: Progressive tauopathy after repetitive head injury, J Neuropathol Exp Neurol., 68, 7, pp. 709-735, (2009); Broglio S.P., Sosnoff J.J., Shin S., He X., Alcaraz C., Zimmerman J., Head impacts during high school football: A biomechanical assessment, J Athl Train., 44, 4, pp. 342-349, (2009); Rowson S., Brolinson G., Goforth M., Dietter D., Duma S., Linear and angular head acceleration measurements in collegiate football, J Biomech Eng., 131, 6, (2009); Reynolds B.B., Patrie J., Henry E.J., Et al., Effects of sex and event type on head impact in collegiate soccer, Orthop J Sports Med., 5, 4, (2017); Zuckerman S.L., Totten D.J., Rubel K.E., Kuhn A.W., Yengo-Kahn A.M., Solomon G.S., Mechanisms of injury as a diagnostic predictor of sport-related concussion severity in football, basketball, and soccer: Results from a regional concussion registry, Neurosurgery., 63, pp. 102-112, (2016); Sakamoto K., Sasaki R., Hong S., Matsukura K., Asai T., Comparison of kicking speed between female and Male soccer players, Procedia Eng., 72, pp. 50-55, (2014); Reynolds B.B., Patrie J., Henry E.J., Et al., Quantifying head impacts in collegiate lacrosse, Am J Sports Med., 44, 11, pp. 2947-2956, (2016); Schmidt J.D., Pierce A.F., Guskiewicz K.M., Register-Mihalik J.K., Pamukoff D.N., Mihalik J.P., Safe-play knowledge, aggression, and head-impact biomechanics in adolescent ice hockey players, J Athl Train., 51, 5, pp. 366-372, (2016); Martini D., Eckner J., Kutcher J., Broglio S.P., Subconcussive head impact biomechanics: Comparing differing offensive schemes, Med Sci Sports Exerc., 45, 4, pp. 755-761, (2013); Reynolds B.B., Patrie J., Henry E.J., Et al., Comparative analysis of head impact in contact and collision sports, J Neurotrauma., 34, 1, pp. 38-49, (2017); Urban J.E., Flood W.C., Zimmerman B.J., Et al., Evaluation of head impact exposure measured fromyouth football game plays, J Neurosurg Pediatr., pp. 1-10, (2019)","J.P. Mihalik; Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Campus Box 8700, 2201 Stallings-Evans Sports Medicine Center, Chapel Hill, 27599-8700, United States; email: jmihalik@email.unc.edu","","Lippincott Williams and Wilkins","01959131","","MSCSB","33064408","English","Med. Sci. Sports Exerc.","Article","Final","","Scopus","2-s2.0-85093705920" "Taylor J.B.; Nguyen A.-D.; Paterno M.V.; Huang B.; Ford K.R.","Taylor, Jeffrey B. (55829673200); Nguyen, Anh-Dung (12805987900); Paterno, Mark V. (6602774922); Huang, Bin (56512893300); Ford, Kevin R. (7102539333)","55829673200; 12805987900; 6602774922; 56512893300; 7102539333","Real-time optimized biofeedback utilizing sport techniques (ROBUST): a study protocol for a randomized controlled trial","2017","BMC Musculoskeletal Disorders","18","1","71","1","13","12","10","10.1186/s12891-017-1436-1","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85011695891&doi=10.1186%2fs12891-017-1436-1&partnerID=40&md5=7e9478ebaf8115186fc67d8b07041605","Department of Physical Therapy, Congdon School of Health Sciences, High Point University, High Point, 27268, NC, United States; Department of Athletic Training, Congdon School of Health Sciences, High Point University, High Point, NC, United States; Division of Occupational Therapy and Physical Therapy, Division of Sports Medicine, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, United States; Division of Biostatistics and Epidemiology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, United States","Taylor J.B., Department of Physical Therapy, Congdon School of Health Sciences, High Point University, High Point, 27268, NC, United States; Nguyen A.-D., Department of Athletic Training, Congdon School of Health Sciences, High Point University, High Point, NC, United States; Paterno M.V., Division of Occupational Therapy and Physical Therapy, Division of Sports Medicine, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, United States; Huang B., Division of Biostatistics and Epidemiology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, United States; Ford K.R., Department of Physical Therapy, Congdon School of Health Sciences, High Point University, High Point, 27268, NC, United States","Background: Anterior cruciate ligament (ACL) injuries in female athletes lead to a variety of short- and long-term physical, financial, and psychosocial ramifications. While dedicated injury prevention training programs have shown promise, ACL injury rates remain high as implementation has not become widespread. Conventional prevention programs use a combination of resistance, plyometric, balance and agility training to improve high-risk biomechanics and reduce the risk of injury. While many of these programs focus on reducing knee abduction load and posture during dynamic activity, targeting hip extensor strength and utilization may be more efficacious, as it is theorized to be an underlying mechanism of injury in adolescent female athletes. Biofeedback training may complement traditional preventive training, but has not been widely studied in connection with ACL injuries. We hypothesize that biofeedback may be needed to maximize the effectiveness of neuromuscular prophylactic interventions, and that hip-focused biofeedback will improve lower extremity biomechanics to a larger extent than knee-focused biofeedback during dynamic sport-specific tasks and long-term movement strategies. Methods: This is an assessor-blind, randomized control trial of 150 adolescent competitive female (9-19 years) soccer players. Each participant receives 3x/week neuromuscular preventive training and 1x/week biofeedback, the mode depending on their randomization to one of 3 biofeedback groups (hip-focused, knee-focused, sham). The primary aim is to assess the impact of biofeedback training on knee abduction moments (the primary biomechanical predictor of future ACL injury) during double-leg landings, single-leg landings, and unplanned cutting. Testing will occur immediately before the training intervention, immediately after the training intervention, and 6 months after the training intervention to assess the long-term retention of modified biomechanics. Secondary aims will assess performance changes, including hip and core strength, power, and agility, and the extent to which maturation effects biofeedback efficacy. Discussion: The results of the Real-time Optimized Biofeedback Utilizing Sport Techniques (ROBUST) trial will help complement current preventive training and may lead to clinician-friendly methods of biofeedback to incorporate into widespread training practices. Trial registration: Date of publication in ClinicalTrials.gov: 20/04/2016. ClinicalTrials.gov Identifier: NCT02754700 . © 2017 The Author(s).","Anterior cruciate ligament; Biofeedback; Hip extensor; Injury prevention; Knee abduction","Adolescent; Anterior Cruciate Ligament Injuries; Biofeedback, Psychology; Biomechanical Phenomena; Child; Computer Systems; Exercise Therapy; Female; Humans; Prospective Studies; Single-Blind Method; Soccer; Young Adult; adolescent; adult; agility; anterior cruciate ligament injury; Article; biomechanics; child; controlled study; feedback system; female; human; knee function; leg movement; major clinical study; methodology; motor performance; prediction; randomized controlled trial; school child; single blind procedure; soccer; strength; training; young adult; anterior cruciate ligament injury; biofeedback; computer system; injuries; kinesiotherapy; physiology; procedures; prospective study","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A 13-year review, Am J Sports Med, 33, pp. 524-530, (2005); 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Taylor J.B., Waxman J.P., Richter S.J., Shultz S.J., Evaluation of the effectiveness of anterior cruciate ligament injury prevention programme training components: A systematic review and meta-analysis, Br J Sports Med, 49, pp. 79-87, (2015); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Van den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, pp. 1745-1750, (2003); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Med Sci Sports Exerc, 37, pp. 124-129, (2005); Ford K.R., Myer G.D., Smith R.L., Vianello R.M., Seiwert S.L., Hewett T.E., A comparison of dynamic coronal plane excursion between matched male and female athletes when performing single leg landings, Clin Biomech (Bristol, Avon), 21, pp. 33-40, (2006); 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Taylor; Department of Physical Therapy, Congdon School of Health Sciences, High Point University, High Point, 27268, United States; email: jtaylor@highpoint.edu","","BioMed Central","14712474","","","28173788","English","BMC Musculoskelet. Disord.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85011695891" "Collings T.J.; Diamond L.E.; Barrett R.S.; Timmins R.G.; Hickey J.T.; du Moulin W.S.; Gonçalves B.A.M.; Cooper C.; Bourne M.N.","Collings, Tyler J. (57205570855); Diamond, Laura E. (56496397300); Barrett, Rod S. (7202350016); Timmins, Ryan G. (55540471700); Hickey, Jack T. (55882443800); du Moulin, William S. (56786403900); Gonçalves, Basílio A.M. (57211366866); Cooper, Christopher (57224734377); Bourne, Matthew N. (55937833800)","57205570855; 56496397300; 7202350016; 55540471700; 55882443800; 56786403900; 57211366866; 57224734377; 55937833800","Impact of prior anterior cruciate ligament, hamstring or groin injury on lower limb strength and jump kinetics in elite female footballers","2021","Physical Therapy in Sport","52","","","297","304","7","7","10.1016/j.ptsp.2021.10.009","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118335450&doi=10.1016%2fj.ptsp.2021.10.009&partnerID=40&md5=b67f4f1f376e565968c37586c4fe4535","School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia; Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia; Centre of Clinical Research Excellence in Spinal Pain, Injury & Health, School of Health & Rehabilitation Sciences, The University of Queensland, Brisbane, Australia; School of Behavioural and Health Sciences, Australian Catholic University, Melbourne, Australia; Sports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre, Australian Catholic University, Fitzroy, Victoria, Australia; La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Melbourne, Australia","Collings T.J., School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia, Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia; Diamond L.E., School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia, Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia, Centre of Clinical Research Excellence in Spinal Pain, Injury & Health, School of Health & Rehabilitation Sciences, The University of Queensland, Brisbane, Australia; Barrett R.S., School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia, Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia; Timmins R.G., School of Behavioural and Health Sciences, Australian Catholic University, Melbourne, Australia, Sports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre, Australian Catholic University, Fitzroy, Victoria, Australia; Hickey J.T., School of Behavioural and Health Sciences, Australian Catholic University, Melbourne, Australia; du Moulin W.S., School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia, Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia; Gonçalves B.A.M., School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia, Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia; Cooper C., School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia, Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia; Bourne M.N., School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia, Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia, La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Melbourne, Australia","Objective: To compare lower limb strength and countermovement jump (CMJ) kinetics between elite female footballers with and without a history of anterior cruciate ligament reconstruction (ACLR), hamstring strain, or hip/groin injury. Design: Cross-sectional. Setting: Field-based. Participants: 369 elite female Australian football, soccer and rugby league players aged 15–35. Main outcome measures: Isometric hip adductor and abductor strength, eccentric knee flexor strength, and CMJ vertical ground reaction forces, including between-leg asymmetry. Players reported their lifetime history of ACLR, and whether they had sustained a hamstring strain, or hip/groin injury in the previous 12-months. Results: Players with a unilateral history of ACLR (n = 24) had significant between-leg asymmetry in eccentric knee flexor strength (mean = −6.3%, 95%CI = −8.7 to −3.9%, P <.001), isometric hip abductor strength (mean = −2.5%, 95%CI = −4.3 to −0.7%, P =.008), and CMJ peak landing force (mean = −5.5%, 95%CI = −10.9 to −0.1%, P =.046). Together, between-leg asymmetry in eccentric knee flexor strength, isometric hip abductor strength, and CMJ peak landing force distinguished between players with and without prior ACLR with 93% accuracy. Conclusion: Elite female footballers with a history of ACLR, but not hamstring or hip/groin injury, exhibit persistent between-leg asymmetries in lower limb strength and jump kinetics following a return to sport. © 2021 Elsevier Ltd","Anterior cruciate ligament reconstruction; Asymmetry; Biomechanics; Rehabilitation; Screening","Anterior Cruciate Ligament; Anterior Cruciate Ligament Injuries; Australia; Cross-Sectional Studies; Female; Groin; Humans; Kinetics; Knee; Muscle Strength; adolescent; adult; anterior cruciate ligament injury; anterior cruciate ligament reconstruction; Article; Australian; biomechanics; comparative study; controlled study; countermovement jump peak landing force; cross-sectional study; eccentric muscle contraction; elite athlete; female; flexor muscle; football player; force; ground reaction force; hamstring muscle; hip injury; hip muscle; human; inguinal region; jumping; kinetics; leg muscle; lifespan; major clinical study; measurement accuracy; medical history; muscle injury; muscle isometric contraction; muscle strain; muscle strength; patient history of surgery; rehabilitation care; return to sport; rugby; soccer player; anterior cruciate ligament; Australia; inguinal region; kinetics; knee; muscle strength","Altman D.G., Bland J.M., Diagnostic tests 3: Receiver operating characteristic plots, BMJ British Medical Journal, 309, 6948, (1994); Antosh I.J., Svoboda S.J., Peck K.Y., Garcia E.S.J., Cameron K.L., Change in KOOS and WOMAC scores in a young athletic population with and without anterior cruciate ligament injury, The American Journal of Sports Medicine, 46, 7, pp. 1606-1616, (2018); Baumgart C., Schubert M., Hoppe M.W., Gokeler A., Freiwald J., Do ground reaction forces during unilateral and bilateral movements exhibit compensation strategies following ACL reconstruction?, Knee Surgery, Sports Traumatology, Arthroscopy, 25, 5, pp. 1385-1394, (2017); Bishop C., Read P., Lake J., Chavda S., Turner A., Interlimb asymmetries: Understanding how to calculate differences from bilateral and unilateral tests, Strength and Conditioning Journal, 40, 4, pp. 1-6, (2018); 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Maniar N., Schache A.G., Sritharan P., Opar D.A., Non-knee-spanning muscles contribute to tibiofemoral shear as well as valgus and rotational joint reaction moments during unanticipated sidestep cutting, Scientific Reports, 8, 1, (2018); Maniar N., Shield A.J., Williams M.D., Timmins R.G., Opar D.A., Hamstring strength and flexibility after hamstring strain injury: A systematic review and meta-analysis, British Journal of Sports Medicine, 50, 15, (2016); Mens J., Inklaar H., Koes B.W., Stam H.J., A new view on adduction-related groin pain, Clinical Journal of Sport Medicine, 16, 1, pp. 15-19, (2006); Messer D.J., Shield A.J., Williams M.D., Timmins R.G., Bourne M.N., Hamstring muscle activation and morphology are significantly altered 1–6 years after anterior cruciate ligament reconstruction with semitendinosus graft, Knee Surgery, Sports Traumatology, Arthroscopy, 28, 3, pp. 733-741, (2020); Montalvo A.M., Schneider D.K., Silva P.L., Yut L., Webster K.E., Riley M.A., Myer G.D., ‘What's my risk of sustaining an ACL injury while playing football (soccer)?’ A systematic review with meta-analysis, British Journal of Sports Medicine, 53, 21, pp. 1333-1340, (2018); 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A systematic review with meta-analysis, British Journal of Sports Medicine, 49, 12, (2015); Nevin F., Delahunt E., Adductor squeeze test values and hip joint range of motion in Gaelic football athletes with longstanding groin pain, Journal of Science and Medicine in Sport, 17, 2, pp. 155-159, (2014); O'Brien M., Bourne M., Heerey J., Timmins R., Pizzari T., A novel device to assess hip strength: Concurrent validity and normative values in male athletes, Physical Therapy in Sport, 35, (2019); Opar D.A., Piatkowski T., Williams M.D., Shield A.J., A novel device using the nordic hamstring exercise to assess eccentric knee flexor strength: A reliability and retrospective injury study, Journal of Orthopaedic & Sports Physical Therapy, 43, 9, pp. 636-640, (2013); Read P.J., Michael Auliffe S., Wilson M.G., Graham-Smith P., Lower limb kinetic asymmetries in professional soccer players with and without anterior cruciate ligament reconstruction: Nine months is not enough time to restore “functional” symmetry or return to performance, The American Journal of Sports Medicine, 48, 6, pp. 1365-1373, (2020); Roos E.M., Roos H.P., Lohmander L.S., Ekdahl C., Beynnon B.D., Therapy S.P., Knee injury and osteoarthritis outcome score (KOOS)—development of a self-administered outcome measure, Journal of Orthopaedic & Sports Physical Therapy, 28, 2, pp. 88-96, (1998); Ryan S., Kempton T., Pacecca E., Coutts A.J., Measurement properties of an adductor strength-assessment system in professional Australian footballers, International Journal of Sports Physiology and Performance, 14, 2, pp. 256-259, (2019); Sandon A., Engstrom B., Forssblad M., High risk of further anterior cruciate ligament injury in a 10-year follow-up study of anterior cruciate ligament-reconstructed soccer players in the Swedish national knee ligament registry, Journal of Arthroscopic and Related Surgery, 36, 1, pp. 189-195, (2020); Thorborg K., Branci S., Nielsen M.P., Tang L., Nielsen M.B., Holmich P., Eccentric and isometric hip adduction strength in male soccer players with and without adductor-related groin pain: An assessor-blinded comparison, Orthopaedic Journal of Sports Medicine, 2, 2, (2014); Thorborg K., Branci S., Stensbirk F., Jensen J., Holmich P., Copenhagen hip and groin outcome score (HAGOS) in male soccer: Reference values for hip and groin injury-free players, British Journal of Sports Medicine, 48, 7, pp. 557-559, (2014); Thorborg K., Holmich P., Christensen R., Petersen J., Roos E.M., The copenhagen hip and groin outcome score (HAGOS): Development and validation according to the COSMIN checklist, British Journal of Sports Medicine, 45, 6, pp. 478-491, (2011); Timmins R.G., Bourne M.N., Shield A.J., Williams M.D., Lorenzen C., Opar D.A., Short biceps femoris fascicles and eccentric knee flexor weakness increase the risk of hamstring injury in elite football (soccer): A prospective cohort study, British Journal of Sports Medicine, 50, 24, pp. 1524-1535, (2016); Toor A.S., Limpisvasti O., Ihn H.E., McGarry M.H., Banffy M., Lee T.Q., The significant effect of the medial hamstrings on dynamic knee stability, Knee Surgery, Sports Traumatology, Arthroscopy, 27, 8, pp. 2608-2616, (2019); Worner T., Sigurdsson H.B., Palsson A., Kostogiannis I., Ageberg E., Worse self-reported outcomes but no limitations in performance-based measures in patients with long-standing hip and groin pain compared with healthy controls, Knee Surgery, Sports Traumatology, Arthroscopy, 25, 1, pp. 101-107, (2017)","T.J. Collings; Clinical Sciences 1, Griffith University, Gold Coast, Southport 4215, Australia; email: tyler.collings@griffithuni.edu.au","","Churchill Livingstone","1466853X","","PTSHB","34742028","English","Phys. Ther. Sport","Article","Final","","Scopus","2-s2.0-85118335450" "Lloyd R.S.; Oliver J.L.; Myer G.D.; De Ste Croix M.; Read P.J.","Lloyd, Rhodri S. (24460583700); Oliver, Jon L. (7401628051); Myer, Gregory D. (6701852696); De Ste Croix, Mark (6603255583); Read, Paul J. (55764420600)","24460583700; 7401628051; 6701852696; 6603255583; 55764420600","Seasonal variation in neuromuscular control in young male soccer players","2020","Physical Therapy in Sport","42","","","33","39","6","8","10.1016/j.ptsp.2019.12.006","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85076831183&doi=10.1016%2fj.ptsp.2019.12.006&partnerID=40&md5=2483d1de05d11b0846781dfbc3f7bcbe","School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom; Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand; Centre for Sport Science and Human Performance, Waikato Institute of Technology, Hamilton, New Zealand; Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Department of Pediatrics and Orthopaedic Surgery, College of Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH, United States; The Micheli Center for Sports Injury Prevention, Boston, MA, United States; School of Sport and Exercise, University of Gloucestershire, Gloucester, United Kingdom; Athlete Health and Performance Research Centre, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar","Lloyd R.S., School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom, Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand, Centre for Sport Science and Human Performance, Waikato Institute of Technology, Hamilton, New Zealand; Oliver J.L., School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom, Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand; Myer G.D., Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Department of Pediatrics and Orthopaedic Surgery, College of Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH, United States, The Micheli Center for Sports Injury Prevention, Boston, MA, United States; De Ste Croix M., School of Sport and Exercise, University of Gloucestershire, Gloucester, United Kingdom; Read P.J., School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom, Athlete Health and Performance Research Centre, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar","Objective: Determine how lower limb neuromuscular control changes over the course of a competitive soccer season. Design: Repeated measures. Setting: Academy soccer club. Participants: 43 male youth soccer players (age 13.1 ± 2.2 yr; height 160.1 ± 15.7 cm; body mass 49.4 ± 14.3 kg; maturity offset 0.2 ± 1.9 yr). Main outcome measures: Pre-, mid- and end of season assessments of peak landing forces during single leg 75% horizontal hop and stick (75%HOP) and a single leg countermovement jump (SLCMJ), single leg hop for distance (SLHD), knee valgus during the tuck jump assessment (TJA) and inter-limb symmetries. Results: Hop distance increased significantly. Absolute peak landing forces in the left leg during the SLCMJ and 75%HOP increased significantly, with significant increases also present in the same leg for SLCMJ relative peak landing force. TJA knee valgus score was reduced in the right leg, but remained at a ‘moderate’ level in the left knee. Conclusion: Neuromuscular control, as evidenced by increased absolute and relative peak landing forces, appears to reduce over the course of a competitive season. Young soccer players should engage in neuromuscular training throughout the season to offset any decrements in neuromuscular control and to facilitate appropriate landing strategies. © 2019 Elsevier Ltd","Football; Injury; Knee valgus; Landing force; Youth","Adolescent; Biomechanical Phenomena; Humans; Knee Injuries; Knee Joint; Male; Monitoring, Physiologic; Seasons; Soccer; adolescent; anthropometric parameters; Article; body height; body mass; controlled study; hop distance; human; leg injury; leg length; lower limb; male; neuromuscular function; peak vertical landing force; priority journal; risk factor; seasonal variation; soccer player; sport injury; task performance; biomechanics; injury; knee; knee injury; pathophysiology; physiologic monitoring; procedures; season; soccer","Bishop C., Lake J., Loturco I., Papadopoulos K., Turner A., Read P.; Brink M.S., Visscher C., Arends S., Zwerver J., Post W.J., Lemmink K.A., Monitoring stress and recovery: New insights for the prevention of injuries and illnesses in elite youth soccer players, British Journal of Sports Medicine, 44, pp. 809-815, (2010); Caldwell B.P., Peters D.M., Seasonal variation in physiological fitness of a semiprofessional soccer team, The Journal of Strength & Conditioning Research, 23, pp. 1370-1377, (2009); Casajus J.A., Seasonal variation in fitness variables in professional soccer players, The Journal of Sports Medicine and Physical Fitness, 41, pp. 463-469, (2001); Clark N.A., Edwards A.M., Morton R.H., Butterly R.J., Season-to-season variations of physiological fitness within a squad of professional male soccer players, Journal of Sports Science and Medicine, 7, pp. 157-165, (2008); Cloke D.J., Ansell P., Avery P., Deehan D., Ankle injuries in football academies: A three-centre prospective study, British Journal of Sports Medicine, 45, pp. 702-708, (2011); Cloke D.J., Spencer S., Hodson A., Deehan D., The epidemiology of ankle injuries occurring in English Football Association academies, British Journal of Sports Medicine, 43, pp. 1119-1125, (2009); Cobley S., Till K., Longitudinal tracking of athlete development: Its importance, methods and future considerations, The handbook of talent identification and development in sport, pp. 248-266, (2017); Cobley S.P., Till K., O'Hara J., Cooke C., Chapman C., Variable and changing trajectories in youth athlete development: Further verification in advocating a long-term inclusive tracking approach, The Journal of Strength & Conditioning Research, 28, pp. 1959-1970, (2014); Cohen J., Statistical power analysis for the behavioural sciences, (1988); Croisier J.L., Crelaard J.M., Hamstring muscle tear with recurrent complaints: An isokinetic profile isokinet, Exercise Science, 8, pp. 175-180, (2000); Daneshjoo A., Rahnama N., Mokhtar A.H., Yusof A., Bilateral and unilateral asymmetries of isokinetic strength and flexibility in male young professional soccer players, Journal of Human Kinetics, 36, pp. 45-53, (2013); Dauty M., Collon S., Incidence of injuries in French professional soccer players, Int J Sports Med, 32, pp. 965-969, (2011); Ebben W.P., Vanderzanden T., Wurm B.J., Petushek E.J., Evaluating plyometric exercises using time to stabilization, The Journal of Strength & Conditioning Research, 24, pp. 300-306, (2010); Fousekis K., Tsepis E., Poulmedis P., Athanasopoulos S., Vagenas G., Intrinsic risk factors of non-contact quadriceps and hamstring strains in soccer: A prospective study of 100 professional players, British Journal of Sports Medicine, 45, pp. 709-714, (2011); aus der Funten K., Faude O., Lensch J., Meyer T., Injury characteristics in the German professional male soccer leagues after a shortened winter break, Journal of Athletic Training, 49, pp. 786-793, (2014); Goosens L., Witvrouw E., Vanden Bossche L., De Clerq D., Lower eccentric hamstring strength and single leg hop for distance predict hamstring injury in PETE students, European Journal of Sport Science, 15, pp. 436-442, (2015); Goossens L., Witvrouw E., Vanden Bossche L., De Clercq D., Lower eccentric hamstring strength and single leg hop for distance predict hamstring injury in PETE students, European Journal of Sport Science, 15, pp. 436-442, (2015); Gravina L., Gil S.M., Ruiz F., Zubero J., Gil J., Irazusta J., Anthropometric and physiological differences between first team and reserve soccer players aged 10-14 years at the beginning and end of the season, The Journal of Strength & Conditioning Research, 22, pp. 1308-1314, (2008); Haitz K., Shultz R., Hodgins M., Matheson G.O., Test-retest and interrater reliability of the functional lower extremity evaluation, Journal of Orthopaedic & Sports Physical Therapy, 44, pp. 947-954, (2014); Hewett T.E., Johnson D.L., ACL prevention programs: Fact or fiction?, Orthopedics, 33, pp. 36-39, (2010); Hopkins W.G., Marshall S.W., Batterham A.M., Hanin J., Progressive statistics for studies in sports medicine and exercise science, Medicine & Science in Sports & Exercise, 41, pp. 3-13, (2009); Klugman M.F., Brent J.L., Myer G.D., Ford K.R., Hewett T.E., Does an in-season only neuromuscular training protocol reduce deficits quantified by the tuck jump assessment?, Clinics in Sports Medicine, 30, pp. 825-840, (2011); Le Gall F., Carling C., Reilly T., Vandewalle H., Church J., Rochcongar P., Incidence of injuries in elite French youth soccer players: A 10-season study, The American Journal of Sports Medicine, 34, pp. 928-938, (2006); Lehnert M., Psotta R., Chvojka P., De Ste Croix M., Seasonal variation in isokinetic peak torque in youth soccer players, Kinesiology, 46, pp. 79-87, (2014); Lephart S.M., Ferris C.M., Riemann B.L., Myers J.B., Fu F.H., Gender differences in strength and lower extremity kinematics during landing, Clinical Orthopaedics and Related Research, 162-169, (2002); Leppanen M., Pasanen K., Kujala U.M., Vasankari T., Kannus P., Ayramo S., Et al., Stiff landings are associated with increased ACL injury risk in young female basketball and floorball players, The American Journal of Sports Medicine, 45, pp. 386-393, (2017); Myer G.D., Ford K.R., Hewett T.E., Tuck jump assessment for reducing Anterior Cruciate Ligament injury risk, Athletic Therapy Today, 13, pp. 39-44, (2008); Myer G.D., Stroube B.W., DiCesare C.A., Brent J.L., Ford K.R., Heidt R.S., Et al., Augmented feedback supports skill transfer and reduces high-risk injury landing mechanics: A double-blind, randomized controlled laboratory study, The American Journal of Sports Medicine, 41, pp. 669-677, (2013); Oliver J., Armstrong N., Williams C., Changes in jump performance and muscle activity following soccer-specific exercise, Journal of Sports Science, 26, pp. 141-148, (2008); Padua D.A., Arnold B.L., Perrin D.H., Gansneder B.M., Carcia C.R., Granata K.P., Fatigue, vertical leg stiffness, and stiffness control strategies in males and females, Journal of Athletic Training, 41, pp. 294-304, (2006); Price R.J., Hawkins R.D., Hulse M.A., Hodson A., The football association and medical research programme: An audit of injuries in academy youth football, British Journal of Sports Medicine, 38, pp. 466-471, (2004); Read P.J., Oliver J.L., Croix M.B., Myer G.D., Lloyd R.S., Consistency of field-based measures of neuromuscular control using force-plate diagnostics in elite male youth soccer players, The Journal of Strength & Conditioning Research, 30, pp. 3304-3311, (2016); Read P.J., Oliver J.L., De Ste Croix M., Myer G.D., Lloyd R.S., Reliability of the tuck jump injury risk screening assessment in elite male youth soccer players, The Journal of Strength & Conditioning Research, 30, pp. 1510-1516, (2016); Read P.J., Oliver J.L., De Ste Croix M.B.A., Myer G.D., Lloyd R.S., Landing kinematics in elite male youth soccer players of different chronologic ages and stages of maturation, Journal of Athletic Training, 53, pp. 372-378, (2018); Read P.J., Oliver J.L., De Ste Croix M.B.A., Myer G.D., Lloyd R.S., A prospective investigation to evaluate risk factors for lower extremity injury risk in male youth soccer players, Scandinavian Journal of Medicine & Science in Sports, 28, pp. 1244-1251, (2018); Read P.J., Oliver J.L., Myer G.D., De Ste Croix M.B.A., Belshaw A., Lloyd R.S., Altered landing mechanics are shown by male youth soccer players at different stages of maturation, Physical Therapy in Sport, 33, pp. 48-53, (2018); Read P.J., Oliver J.L., Myer G.D., De Ste Croix M.B.A., Lloyd R.S., The effects of maturation on measures of asymmetry during neuromuscular control tests in elite male youth soccer players, Pediatric Exercise Science, 30, pp. 168-175, (2018); Read P.J., Oliver J.L., De Ste Croix M.B.A., Myer G.D., Lloyd R.S., A review of field-based assessments of neuromuscular control and their utility in male youth soccer players, The Journal of Strength & Conditioning Research, 33, pp. 283-299, (2019); Rossi S.J., McMillan J., Buckley T., Seasonal changes of drop jump performance and recovery-stress scores in collegiate soccer players, The Journal of Strength & Conditioning Research, 25, (2011); Rousanoglou E.N., Barzouka K.G., Boudolos K.D., Seasonal changes of jumping performance and knee muscle strength in under-19 women volleyball players, The Journal of Strength & Conditioning Research, 27, pp. 1108-1117, (2013); Sprague P.A., Mokha G.M., Gatens D.R., Changes in functional movement screen scores over a season in collegiate soccer and volleyball athletes, The Journal of Strength & Conditioning Research, 28, pp. 3155-3163, (2014); Walden M., Krosshaug T., Bjorneboe J., Andersen T.E., Faul O., Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: A systematic video analysis of 39 cases, British Journal of Sports Medicine, 49, pp. 1452-1460, (2015); Williams C.A., Oliver J.L., Faulkner J., Seasonal monitoring of sprint and jump performance in a soccer youth academy, International Journal of Sports Physiology and Performance, 6, pp. 264-275, (2011); Yamada R.K., Arliani G.G., Almeida G.P., Venturine A.M., Santos C.V., Astur D.C., Et al., The effects of one-half of a soccer match on the postural stability and functional capacity of the lower limbs in young soccer players, Clinics, 67, pp. 1361-1364, (2012)","R.S. Lloyd; School of Sport, Cardiff Metropolitan University Cyncoed Campus, Cardiff, Cyncoed Road, CF23 6XD, United Kingdom; email: rlloyd@cardiffmet.ac.uk","","Churchill Livingstone","1466853X","","PTSHB","31869753","English","Phys. Ther. Sport","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85076831183" "Owen P.J.; Hangai M.; Kaneoka K.; Rantalainen T.; Belavy D.L.","Owen, Patrick J. (56937997700); Hangai, Mika (24597068300); Kaneoka, Koji (6603304959); Rantalainen, Timo (23135663200); Belavy, Daniel L. (15759062000)","56937997700; 24597068300; 6603304959; 23135663200; 15759062000","Mechanical loading influences the lumbar intervertebral disc. A cross-sectional study in 308 athletes and 71 controls","2021","Journal of Orthopaedic Research","39","5","","989","997","8","7","10.1002/jor.24809","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85088788296&doi=10.1002%2fjor.24809&partnerID=40&md5=3fd3e802855e99c335c7b5aac0062245","School of Exercise and Nutrition Sciences, Institute for Physical Activity and Nutrition, Deakin University, Geelong, VIC, Australia; Department of Orthopaedic Surgery, Sports Medical Center, Japan Institute of Sports Sciences, Tokyo, Japan; Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan; Gerontology Research Centre and Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland","Owen P.J., School of Exercise and Nutrition Sciences, Institute for Physical Activity and Nutrition, Deakin University, Geelong, VIC, Australia; Hangai M., Department of Orthopaedic Surgery, Sports Medical Center, Japan Institute of Sports Sciences, Tokyo, Japan; Kaneoka K., Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan; Rantalainen T., School of Exercise and Nutrition Sciences, Institute for Physical Activity and Nutrition, Deakin University, Geelong, VIC, Australia, Gerontology Research Centre and Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland; Belavy D.L., School of Exercise and Nutrition Sciences, Institute for Physical Activity and Nutrition, Deakin University, Geelong, VIC, Australia","There is evidence in animal populations that loading and exercise can positively impact the intervertebral disc (IVD). However, there is a paucity of information in humans. We examined the lumbar IVDs in 308 young athletes across six sporting groups (baseball, swimming, basketball, kendo, soccer, and running; mean age 19 years) and 71 nonathletic controls. IVD status was quantified via the ratio of IVD to vertebral body height (IVD hypertrophy) and ratio of signal intensity in the nucleus to that in the annulus signal (IVD nucleus hydration) on sagittal T2-weighted magnetic resonance imaging. P values were adjusted via the false discovery rate method to mitigate false positives. In examining the whole collective, compared to referents, there was evidence of IVD hypertrophy in basketball (P ≤.029), swimming (P ≤.010), soccer (P =.036), and baseball (P =.011) with greater IVD nucleus hydration in soccer (P =.007). After matching participants based on back-pain status and body height, basketball players showed evidence of IVD hypertrophy (P ≤.043) and soccer players greater IVD nucleus hydration (P =.001) than referents. Greater career duration and training volume correlated with less (ie, worse) IVD nucleus hydration, but explained less than 1% of the variance in this parameter. In this young collective, increasing age was associated with increased IVD height. The findings suggest that basketball and soccer may be associated with beneficial adaptations in the IVDs in young athletes. In line with evidence on other tissues, such as muscle and bone, the current study adds to evidence that specific loading types may beneficially modulate lumbar IVD properties. © 2020 Orthopaedic Research Society. Published by Wiley Periodicals LLC","back pain; exercise; intervertebral disc; low back pain; magnetic resonance imaging; spine; sports","Adaptation, Physiological; Adolescent; Athletes; Cross-Sectional Studies; Exercise; Female; Humans; Intervertebral Disc; Lumbar Vertebrae; Magnetic Resonance Imaging; Male; Stress, Mechanical; Young Adult; adult; annulus fibrosus; Article; athlete; backache; baseball; basketball; biomechanics; body height; career; controlled study; cross-sectional study; false positive result; female; human; hypertrophy; image analysis; image processing; lumbar disk; major clinical study; male; mechanical loading; nuclear magnetic resonance imaging; nucleus pulposus; priority journal; running; soccer; swimming; training; vertebral height; adaptation; adolescent; exercise; intervertebral disk; lumbar vertebra; mechanical stress; physiology; young adult","Wolff J., The law of bone remodeling (Das Gesetz der Transformation der Knochen), (1892); Hawley J.A., Specificity of training adaptation: time for a rethink?, J Physiol, 586, 1, pp. 1-2, (2008); Schoenfeld B.J., Ogborn D., Krieger J.W., Effects of resistance training frequency on measures of muscle hypertrophy: a systematic review and meta-analysis, Sports Med. 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NZ, 46, 11, pp. 1689-1697, (2016); Bolam K.A., van Uffelen J.G.Z., Taaffe D.R., The effect of physical exercise on bone density in middle-aged and older men: a systematic review, Osteoporos Int, 24, 11, pp. 2749-2762, (2013); Chan S.C.W., Ferguson S.J., Gantenbein-Ritter B., The effects of dynamic loading on the intervertebral disc, Eur Spine J, 20, 11, pp. 1796-1812, (2011); Iatridis J.C., MacLean J.J., Roughley P.J., Alini M., Effects of mechanical loading on intervertebral disc metabolism in vivo, J Bone Joint Surg Am, 88, pp. 41-46, (2006); Holm S., Nachemson A., Variations in the nutrition of the canine intervertebral disc induced by motion, Spine, 8, 8, pp. 866-874, (1983); Brisby H., Wei A.Q., Molloy T., Chung S.A., Murrell G.A., Diwan A.D., The effect of running exercise on intervertebral disc extracellular matrix production in a rat model, Spine Phila Pa, 35, 15, pp. 1429-1436, (2010); Sasaki N., Henriksson H.B., Runesson E., Et al., Physical exercise affects cell proliferation in lumbar intervertebral disc regions in rats, Spine, 37, 17, pp. 1440-1447, (2012); Ueta R.H.S., Tarini V.A.F., Franciozi C.E.S., Et al., Effects of training and overtraining on intervertebral disc proteoglycans, Spine, 43, 1, pp. E1-E6, (2018); Luan S., Wan Q., Luo H., Et al., Running exercise alleviates pain and promotes cell proliferation in a rat model of intervertebral disc degeneration, Int J Mol Sci, 16, 1, pp. 2130-2144, (2015); Sward L., Hellstrom M., Jacobsson B., Nyman R., Peterson L., Disc degeneration and associated abnormalities of the spine in elite gymnasts. A magnetic resonance imaging study, Spine, 16, 4, pp. 437-443, (1991); Videman T., Sarna S., Battie M.C., Et al., The long-term effects of physical loading and exercise lifestyles on back-related symptoms, disability, and spinal pathology among men, Spine, 20, 6, pp. 699-709, (1995); Kaneoka K., Shimizu K., Hangai M., Et al., Lumbar intervertebral disk degeneration in elite competitive swimmers: a case control study, Am J Sports Med, 35, 8, pp. 1341-1345, (2007); Belavy D.L., Quittner M.J., Ridgers N., Ling Y., Connell D., Rantalainen T., Running exercise strengthens the intervertebral disc, Sci Rep, 7, (2017); Belavy D.L., Quittner M., Ridgers N.D., Et al., Beneficial intervertebral disc and muscle adaptations in high-volume road cyclists, Med Sci Sports Exerc, 51, 1, pp. 211-217, (2019); Marinelli N.L., Haughton V.M., Munoz A., Anderson P.A., T2 relaxation times of intervertebral disc tissue correlated with water content and proteoglycan content, Spine, 34, 5, pp. 520-524, (2009); Mitchell U.H., Bowden J.A., Larson R.E., Belavy D.L., Owen P.J., Long-term running in middle-aged men and intervertebral disc health, a cross-sectional pilot study, PLoS One, 15, 2, (2020); Bowden J.A., Bowden A.E., Wang H., Et al., In vivo correlates between daily physical activity and intervertebral disc health, J Orthop Res, 36, 5, pp. 1313-1323, (2017); Hangai M., Kaneoka K., Hinotsu S., Et al., Lumbar intervertebral disk degeneration in athletes, Am J Sports Med, 37, 1, pp. 149-155, (2009); Videman T., Gibbons L.E., Kaprio J., Battie M.C., Challenging the cumulative injury model: positive effects of greater body mass on disc degeneration, Spine J, 10, 1, pp. 26-31, (2010); Mala L., Maly T., Zahalka F., Et al., Body composition of elite female players in five different sports games, J Hum Kinet, 45, pp. 207-215, (2015); Benjamini Y., Hochberg Y., Controlling the false discovery rate: a practical and powerful approach to multiple testing, J R Stat Soc Ser B, 57, 1, pp. 289-300, (1995); Belavy D.L., Albracht K., Bruggemann G.-P., Vergroesen P.P., van Dieen J.H., Can exercise positively influence the intervertebral disc?, Sports Med, 46, 4, pp. 473-485, (2016); Bartolozzi C., Caramella D., Zampa V., Dal Pozzo G., Tinacci E., Balducci F., [The incidence of disk changes in volleyball players. The magnetic resonance findings], Radiol Med (Torino), 82, 6, pp. 757-760, (1991); Wilke H.J., Neef P., Caimi M., Hoogland T., Claes L.E., New in vivo measurements of pressures in the intervertebral disc in daily life, Spine, 24, 8, pp. 755-762, (1999); Brinjikji W., Diehn F.E., Jarvik J.G., Et al., MRI findings of disc degeneration are more prevalent in adults with low back pain than in asymptomatic controls: a systematic review and meta-analysis, AJNR Am J Neuroradiol, 36, 12, pp. 2394-2399, (2015); Hebelka H., Lagerstrand K., Brisby H., Et al., The importance of level stratification for quantitative MR studies of lumbar intervertebral discs: a cross-sectional analysis in 101 healthy adults, Eur Spine J, 28, 9, pp. 2153-2161, (2019); Koeller W., Muehlhaus S., Meier W., Hartmann F., Biomechanical properties of human intervertebral discs subjected to axial dynamic compression—influence of age and degeneration, J Biomech, 19, 10, pp. 807-816, (1986); Sether L.A., Yu S., Haughton V.M., Fischer M.E., Intervertebral disk: normal age-related changes in MR signal intensity, Radiology, 177, 2, pp. 385-388, (1990); Boos N., Weissbach S., Rohrbach H., Weiler C., Spratt K.F., Nerlich A.G., Classification of age-related changes in lumbar intervertebral discs: 2002 Volvo Award in basic science, Spine, 27, 23, pp. 2631-2644, (2002); Sivan S.S., Tsitron E., Wachtel E., Et al., Aggrecan turnover in human intervertebral disc as determined by the racemization of aspartic acid, J Biol Chem, 281, 19, pp. 13009-13014, (2006); Sivan S.S., Wachtel E., Tsitron E., Et al., Collagen turnover in normal and degenerate human intervertebral discs as determined by the racemization of aspartic acid, J Biol Chem, 283, 14, pp. 8796-8801, (2008); Owen P.J., Miller C.T., Rantalainen T., Et al., Exercise for the intervertebral disc: a 6-month randomised controlled trial in chronic low back pain, Eur Spine J, (2020); Roberts N., Hogg D., Whitehouse G.H., Dangerfield P., Quantitative analysis of diurnal variation in volume and water content of lumbar intervertebral discs, Clin Anat, 11, pp. 1-8, (1998); Tyrrell A.R., Reilly T., Troup J.D., Circadian variation in stature and the effects of spinal loading, Spine, 10, 2, pp. 161-164, (1985)","D.L. Belavy; School of Exercise and Nutrition Sciences, Institute for Physical Activity and Nutrition, Deakin University, Geelong, Australia; email: d.belavy@deakin.edu.au","","John Wiley and Sons Inc","07360266","","JORED","32691862","English","J. Orthop. Res.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85088788296" "Ertelt T.; Gronwald T.","Ertelt, Thomas (30267637000); Gronwald, Thomas (53363487500)","30267637000; 53363487500","M. biceps femoris – A wolf in sheep's clothing: The downside of a lower limb injury prevention training","2017","Medical Hypotheses","109","","","119","125","6","9","10.1016/j.mehy.2017.10.002","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042863766&doi=10.1016%2fj.mehy.2017.10.002&partnerID=40&md5=24052a177c8242294bc5696132c720c0","Motions Science/Biomechanics, Faculty of Sport Science, University of Health and Sports, Berlin, Germany; Exercise and Training Science/Physical Education, Faculty of Sport Science, University of Health and Sports, Berlin, Germany","Ertelt T., Motions Science/Biomechanics, Faculty of Sport Science, University of Health and Sports, Berlin, Germany; Gronwald T., Exercise and Training Science/Physical Education, Faculty of Sport Science, University of Health and Sports, Berlin, Germany","Both, hamstring and ACL injuries are among the most typical injuries, particularly in change of direction and high speed running sports. They're also difficult to treat. Therefore, in the past few years, sports medicine practitioners and exercise scientists have mainly been focusing on the development and implementation of preventive programs in order to reduce the number of lower limb injuries, mainly by improving knee alignment. A number of studies have been able to prove the success of these training interventions, which are mainly addressing sensorimotor abilities and plyometric activities. The number of non-contact hamstring injuries has nevertheless been on the rise, particularly in sports like soccer and football. Therefore, the purpose of the following article is to introduce the hypothesis that the above-mentioned training interventions have a massive influence on the activation patterns on the targeted muscle group, and on the M. biceps femoris in particular. Muscle function and the resulting internal load are directly related to muscle architecture at the insertion. Training induced adaptations in hamstring activation patterns can thus lead to an increased injury susceptibility. In this case, a simulation model that directly relates to an acute deceleration maneuver provides valuable insights into the function of the biceps femoris muscle, especially when the rate of activity and the muscle geometry at the insertion area are taken into consideration. We conclude that there needs to be a greater individualization of prevention programs, especially in regards to anatomical requirements, in order to further reduce injury rates in elite sports. Moreover, it would also seem reasonable to apply a similar approach to aspects of chronic pain such as chronic non-specific low back pain. © 2017 Elsevier Ltd","","Anthropometry; Athletic Injuries; Biomechanical Phenomena; Body Weight; Computer Simulation; Exercise; Hamstring Muscles; Humans; Knee; Leg Injuries; Male; Models, Anatomic; Risk; Soccer; Sports; Sports Medicine; accident prevention; adaptation; Article; biceps femoris muscle; clinical practice; deceleration; leg injury; low back pain; muscle contraction; muscle training; simulation; anatomic model; anthropometry; biomechanics; body weight; computer simulation; exercise; hamstring muscle; human; injuries; knee; leg injury; male; pathophysiology; risk; soccer; sport; sport injury; sports medicine","Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: the UEFA injury study, Br J Sports Med, 45, 7, pp. 553-558, (2011); Hagglund M., Walden M., Ekstrand J., Injury incidence and distribution in elite football–a prospective study of the Danish and the Swedish top divisions, Scand J Med Sci Sports, 15, 1, pp. 21-28, (2005); Eirale C., Ekstrand J.; Woods C., Et al., The Football Association Medical Research Programme: an audit of injuries in professional football–analysis of hamstring injuries, Br J Sports Med, 38, 1, pp. 36-41, (2004); Orchard J.W., Intrinsic and extrinsic risk factors for muscle strains in Australian football, Am J Sports Med, 29, 3, pp. 300-303, (2001); Ekstrand J., Hagglund M., Walden M., Epidemiology of muscle injuries in professional football (soccer), Am J Sports Med, 39, 6, pp. 1226-1232, (2011); Ekstrand J., Keeping your top players on the pitch: the key to football medicine at a professional level, Br J Sports Med, 47, (2013); Ekstrand J., Et al., Hamstring muscle injuries in professional football: the correlation of MRI findings with return to play, Br J Sports Med, 46, 2, pp. 112-117, (2012); Schuermans J., Et al., Biceps femoris and semitendinosus–teammates or competitors? New insights into hamstring injury mechanisms in male football players: a muscle functional MRI study, Br J Sports Med, 48, 22, pp. 1599-1606, (2014); Tubbs R.S., Et al., Descriptive anatomy of the insertion of the biceps femoris muscle, Clin Anat, 19, 6, pp. 517-521, (2006); Branch E.A., Anz A.W., Distal insertions of the biceps femoris: a quantitative analysis, Orthop J Sports Med, 3, 9, (2015); Voigt M., Et al., Mechanical and muscular factors influencing the performance in maximal vertical jumping after different prestretch loads, J Biomech, 28, 3, pp. 293-307, (1995); van Ingen Schenau G.J., Bobbert M.F., Rozendal R.H., The unique action of bi-articular muscles in complex movements, J Anat, 155, pp. 1-5, (1987); Bobbert M.F., van Ingen Schenau G.J., Coordination in vertical jumping, J Biomech, 21, 3, pp. 249-262, (1988); Wiemann K.; Wiemann K., Präzisierung des Lombardschen Paradoxon in der Funktion der ischiocruralen Muskeln beim Sprint, Sportwissenschaft, 21, 4, pp. 413-428, (1991); Lombard W.P., Abbott F.M., The mechanical effects produced by the contraction of individual muscles of the thigh of the frog, Am J Physiol, 20, (1907); Ertelt T., Ertelt H.-J., Blickhan R., The geometry-critical functional dependence of the M. gastrocnemius, Int J Appl Mech, 3, 1, (2011); Ertelt T., Walking with chronic non-specific low back pain - a failed strategy and: What can we learn from sports?, Medical Hyptheses, 82, 5, pp. 601-605, (2014); Ertelt T., Blickhan R., Group specific behaviour of bi-articular upper leg muscles exemplified by sledge hopping, J Mech Med Biol, 11, 5, (2011); Vallee M., Muskel-Aktivierungsverhalten bei abrupten Bremsmanövern unter Berücksichtigung der sportlichen Spezialisierung, Bewegungswissenschaft, (2015); Gruber M., Bruhn S., Gollhofer A., Specific adaptations of neuromuscular control and knee joint stiffness following sensorimotor training, Int J Sports Med, 27, 8, pp. 636-641, (2006); Nagano Y., Et al., Effects of jump and balance training on knee kinematics and electromyography of female basketball athletes during a single limb drop landing: pre-post intervention study, Sports Med Arthrosc Rehabil Ther Technol, 3, 1, (2011); English A.W., Weeks O.I., An anatomical and functional analysis of cat biceps femoris and semitendinosus muscles, J Morphol, 191, 2, pp. 161-175, (1987); Best T.M., Tietze D.; Ekstrand J., Walden M., Hagglund M., Hamstring injuries have increased by 4% annually in men's professional football, since 2001: a 13-year longitudinal analysis of the UEFA Elite Club injury study, Br J Sports Med, 50, 12, pp. 731-737, (2016); Michaelidis M., Koumantakis G.A., Effects of knee injury primary prevention programs on anterior cruciate ligament injury rates in female athletes in different sports: a systematic review, Phys Ther Sport, 15, 3, pp. 200-210, (2014); Pasanen K., Et al., Neuromuscular training and the risk of leg injuries in female floorball players: cluster randomised controlled study, BMJ, 337, (2008); Walden M., Et al., Prevention of acute knee injuries in adolescent female football players: cluster randomised controlled trial, BMJ, 344, (2012); Mandelbaum B.R., Et al., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes: 2-year follow-up, Am J Sports Med, 33, 7, pp. 1003-1010, (2005); Bourne M.N., Et al., Impact of exercise selection on hamstring muscle activation, Br J Sports Med, (2016); Bourne M.N., Et al., Impact of the Nordic hamstring and hip extension exercises on hamstring architecture and morphology: implications for injury prevention, Br J Sports Med, 51, 5, pp. 469-477, (2017); Brukner P., Hamstring injuries: prevention and treatment—an update, Br J Sports Med, 49, 19, (2015); Pull M.R., Ranson C., Eccentric muscle actions: Implications for injury prevention and rehabilitation, Physical Therapy in Sport, 8, 2, (2007); Gunther M., (1997); Klein Horsman M.D., Et al., Morphological muscle and joint parameters for musculoskeletal modelling of the lower extremity, Clin Biomech (Bristol, Avon), 22, 2, pp. 239-247, (2007); Lohmann S., Eigenschaften biologischer Materialien zur Simulation menschlicher Bewegung - Funktionell-anatomische Grundlagen und Materialeigenschaften zur Erstellung dreidimensionaler Körpermodelle im Computer, Geschichte und Soziologie, (2005); Andrassy G., Computersimulation des einbeinigen Abstoppens aus der Laufbewegung mithilfe von ausgewählten Muskelkoordinationsmustern der unteren Extremitäten, Lehrstuhl für Bewegungswissenschaft, (2013); Hase K., Stein R.B., Analysis of rapid stopping during human walking, J Neurophysiol, 80, pp. 255-261, (1998); Ertelt T., Vallee M., Unterschiede beim Stoppen aus dem Lauf zwischen ausgewählten Sportarten, Beiträge zur Bewegungswissenschaft, (2013); Kramer A., Et al., A new sledge jump system that allows almost natural reactive jumps, J Biomech, 43, 14, pp. 2672-2677, (2010); Bubeck D., Gollhofer A., Load induced changes of jump performance and activation patterns in free drop jump exercises and in sledge jumps, Eur J Sport Sci, 3, 1, (2001); Vogt L., Pfeifer K., Banzer W., Neuromuscular control of walking with chronic low-back pain, Manual Ther, 8, 1, pp. 21-28, (2003); Ertelt T., Mueller R., Blickhan R., Leg adjustments as a key: initial insights into quick release trials between healthy controls and chronic non-specific low back pain patients, Acta Physiol, (2016); Wyke B., The neurological basis of thoracic spinal pain, Rheumatol Phys Med, 10, 7, pp. 356-367, (1970); Freynhagen R., Et al., PainDETECT: a new screening questionnaire to identify neuropathic components in patients with back pain, Curr Med Res Opin, 22, 10, pp. 1911-1920, (2006); Ertelt T., Schinkel A.-K., Ground reaction force patterns represent the level of training, J Sports Med Phys Fitness, 54, 1, (2014); Winter D.A., Yack H.J., EMG profiles during normal human walking: stride-to-stride and inter-subject variability, Electroencephalogr Clin Neurophysiol, 67, 5, pp. 402-411, (1987); Vallee M., Unterschiede beim Stoppen aus dem Lauf zwischen ausgewählten Sportarten, Lehrstuhl für Bewegungswissenschaft, (2012)","T. Ertelt; University of Health and Sports, Berlin, Vulkanstraße 1, 10367, Germany; email: thomas.ertelt@my-campus-berlin.com","","Churchill Livingstone","03069877","","MEHYD","29150270","English","Med. Hypotheses","Article","Final","","Scopus","2-s2.0-85042863766" "Wahlquist V.E.; Kaminski T.W.","Wahlquist, Victoria E. (57209139561); Kaminski, Thomas W. (7005758157)","57209139561; 7005758157","Analysis of head impact biomechanics in youth female soccer players following the get ahead safely in soccer™ heading intervention","2021","Sensors","21","11","3859","","","","7","10.3390/s21113859","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107131520&doi=10.3390%2fs21113859&partnerID=40&md5=bf90a8b805af21d3819aea11f99d7e0c","Athletic Training Research Laboratory, University of Delaware, Newark, 19716, DE, United States","Wahlquist V.E., Athletic Training Research Laboratory, University of Delaware, Newark, 19716, DE, United States; Kaminski T.W., Athletic Training Research Laboratory, University of Delaware, Newark, 19716, DE, United States","The effects of repetitive head impacts associated with soccer heading, especially in the youth population, are unknown. The purpose of this study was to examine balance, neurocognitive function, and head impact biomechanics after an acute bout of heading before and after the Get aHEAD Safely in Soccer™ program intervention. Twelve youth female soccer players wore a Triax SIM-G head impact sensor during two bouts of heading, using a lightweight soccer ball, one before and one after completion of the Get aHEAD Safely in Soccer™ program intervention. Participants completed balance (BESS and SWAY) and neurocognitive function (ImPACT) tests at baseline and after each bout of heading. There were no significant changes in head impact biomechanics, BESS, or ImPACT scores pre-to post-season. Deficits in three of the five SWAY positions were observed from baseline to post-season. Although we expected to see beneficial changes in head impact biomechanics following the intervention, the coaches and researchers observed an improvement in heading technique/form. Lightweight soccer balls would be a beneficial addition to header drills during training as they are safe and help build confidence in youth soccer players. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.","Concussion; Football; Repetitive head impacts; Wearable sensors","Adolescent; Biomechanical Phenomena; Biophysics; Female; Head; Humans; Soccer; Biomechanics; Biophysics; Sporting goods; Head impact; Neurocognitive functions; Soccer balls; Soccer player; TO header; adolescent; biomechanics; biophysics; female; head; human; soccer; Football","McKee A.C., Cantu R.C., Nowinski C.J., Hedley-whyte T., Gavett B.E., Budson A.E., Veronica E., Lee H., Kubilus C.A., Stern R.A., Chronic traumatic encephalopathy in athletes: Progressive tauopathy following repetitive head injury, J. Neuropathol. Exp. Neurol, 68, pp. 709-735, (2010); Alosco M.L., Healy R.C., Stern R.A., Chronic traumatic encephalopathy and the long-term consequences of repetitive head impacts in sports, Neuropsychology of Sports-Related Concussion, pp. 151-182, (2019); Mez J., Daneshvar D.H., Kiernan P.T., Abdolmohammadi B., Alvarez V.E., Huber B.R., Alosco M.L., Solomon T.M., Nowinski C.J., Mchale L., Et al., Clinicopathological evaluation of chronic traumatic encephalopathy in players of American football, JAMA, 318, pp. 360-370, (2017); Hales C., Neill S., Gearing M., Cooper D., Glass J., Lah J., Late-stage CTE pathology in a retired soccer player with dementia, Neurology, 83, pp. 2307-2309, (2014); Ling H., Morris H.R., Neal J.W., Lees A.J., Hardy J., Holton J.L., Revesz T., Williams D.D.R., Mixed pathologies including chronic traumatic encephalopathy account for dementia in retired association football (soccer) players, Acta Neuropathol, 133, pp. 337-352, (2017); FIFA Magazine, pp. 10-15, (2007); US Youth Soccer Who is US Youth Soccer?; US Club Soccer Concussions and Head Injuries; Bailes J.E., Petraglia A.L., Omalu B.I., Nauman E., Talavage T., Role of subconcussion in repetitive mild traumatic brain injury, J. Neurosurg, 119, pp. 1235-1245, (2013); Kaminski T.W., Chiampas G.T., Putukian M., Kirkendall D., Fokas J., Kontos A.P., Purposeful heading in U.S. youth soccer players: Results from the U.S. soccer online heading survey–epidemiological evidence: Original survey research, Sci. Med. Footb, 4, pp. 93-100, (2020); United Soccer Coaches Get aHEAD Safely in Soccer; Caccese J.B., Buckley T.A., Tierney R.T., Arbogast K.B., Rose W.C., Glutting J.J., Kaminski T.W., Head and neck size and neck strength predict linear and rotational acceleration during purposeful soccer heading, Sport. Biomech, 17, pp. 462-476, (2018); Gutierrez G.M., Conte C., Lightbourne K., The relationship between impact force, neck strength, and neurocognitive performance in soccer heading in adolescent females, Pediatr. Exerc. Sci, 26, pp. 33-40, (2014); Peek K., Elliott J.M., Orr R., Higher neck strength is associated with lower head acceleration during purposeful heading in soccer: A systematic review, J. Sci. Med. Sport, (2019); Kaminski T.W., Thompson A., Wahlquist V.E., Glutting J., Self-reported head injury symptoms exacerbated in those with previous concussions following an acute bout of purposeful soccer heading, Res. Sport. Med, 28, pp. 217-230, (2020); Caccese J.B., Buckley T.A., Tierney R.T., Rose W.C., Glutting J.J., Kaminski T.W., Postural control deficits after repetitive soccer heading, Clin. J. Sport Med, pp. 1-7, (2018); Schmitt D.M., Hertel J., Evans T.A., Olmsted L.C., Putukian M., Effect of an acute bout of soccer heading on postural control and self-reported concussion symptoms, Int. J. Sports Med, 25, pp. 326-331, (2004); Ashton J., Coyles G., Malone J.J., Roberts J.W., Immediate effects of an acute bout of repeated soccer heading on cognitive performance, Sci. Med. Footb, (2020); Broglio S.P., Guskiewicz K.M., Sell T.C., Lephart S.M., No acute changes in postural control after soccer heading, Br. J. Sports Med, 38, pp. 561-567, (2004); Haran F.J., Tierney R., Wright W.G., Keshner E., Silter M., Acute changes in postural control after soccer heading, Int. J. Sports Med, 34, pp. 350-354, (2013); Bonke E.M., Southard J., Buckley T.A., Reinsberger C., Koerte I.K., Howell D.R., The effects of repetitive head impacts on postural control: A systematic review, J. Sci. Med. Sport, (2020); Anderson S.L., Gatens D., Glatts C., Russo S.A., Normative data set of SWAY Balance Mobile Assessment in pediatric athletes, Clin. J. Sport Med, 29, pp. 413-420, (2019); Viel S., Vaugoyeau M., Assaiante C., Adolescence: A transient period of proprioceptive neglect in sensory integration of postural control, Motor Control, 13, pp. 25-42, (2009); Kaminski T.W., Wikstrom A.M., Gutierrez G.M., Glutting J.J., Purposeful heading during a season does not influence cognitive function or balance in female soccer players, J. Clin. Exp. Neuropsychol, 29, pp. 742-751, (2007); Alsalaheen B., McClafferty A., Haines J., Smith L., Yorke A., Reference values for the balance error scoring system in adolescents, Brain Inj, 30, pp. 914-918, (2016); Snyder A.R., Bauer R.M., A normative study of the sport concussion assessment tool (SCAT2) in children and adolescents, Clin. Neuropsychol, 28, pp. 1091-1103, (2014); Caccese J.B., Kaminski T.W., Comparing computer-derived and human-observed scores for the Balance Error Scoring System, J. Sport Rehabil, 25, pp. 133-136, (2016); Kontos A.P., Dolese A., Elbin R.J., Covassin T., Warren B.L., Relationship of soccer heading to computerized neurocognitive performance and symptoms among female and male youth soccer players, Brain Inj, 25, pp. 1234-1241, (2011); Wahlquist V.E., Glutting J.J., Kaminski T.W., Examining neurocognitive performance and heading in interscholastic female football players over their playing careers, Sci. Med. Footb, 3, pp. 115-124, (2019); Harriss A., Johnson A.M., Walton D.M., Dickey J.P., Head impact magnitudes that occur from purposeful soccer heading depend on the game scenario and head impact location, Musculoskelet. Sci. Pract, 40, pp. 53-57, (2019); Hanlon E.M., Bir C.A., Real-time head acceleration measurement in girls’ youth soccer, Med. Sci. Sports Exerc, 44, pp. 1102-1108, (2012); Caccese J.B., Buckley T.A., Tierney R.T., Rose W.C., Glutting J.J., Kaminski T.W., Sex and age differences in head acceleration during purposeful soccer heading, Res. Sports Med, 26, pp. 64-74, (2018); Lamond L.C., Caccesse J.B., Buckley T.A., Glutting J., Kaminski T.W., Linear acceleration in direct head contact across impact type, player position, and playing scenario in collegiate women’s soccer, J. Athl. Train, 53, pp. 115-121, (2018); Hosseini-Farid M., Amiri-Tehrani-Zadeh M., Ramzanpour M., Ziejewski M., Karami G., The strain rates in the Brain, brainstem, dura, and skull under dynamic loadings, Math. Comput. Appl, 25, (2020)","T.W. Kaminski; Athletic Training Research Laboratory, University of Delaware, Newark, 19716, United States; email: kaminski@udel.edu","","MDPI AG","14248220","","","34204896","English","Sensors","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85107131520" "Dos'santos T.; Thomas C.; Comfort P.; Jones P.A.","Dos'santos, Thomas (57170712800); Thomas, Christopher (56754565800); Comfort, Paul (26767602800); Jones, Paul A. (55308526600)","57170712800; 56754565800; 26767602800; 55308526600","Biomechanical Effects of a 6-Week Change of Direction Speed and Technique Modification Intervention: Implications for Change of Direction Side step Performance","2022","Journal of Strength and Conditioning Research","36","10","","2780","2791","11","10","10.1519/JSC.0000000000003950","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85135243017&doi=10.1519%2fJSC.0000000000003950&partnerID=40&md5=f99ee83d04a0c2e971b2305098329a17","Human Performance Laboratory, Directorate of Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom; Department of Sport and Exercise Sciences, Musculoskeletal Science and Sports Medicine Research Center, Manchester Metropolitan University, Manchester, United Kingdom; Edith Cowan University, School of Medical and Health Science, WA, Australia","Dos'santos T., Human Performance Laboratory, Directorate of Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom, Department of Sport and Exercise Sciences, Musculoskeletal Science and Sports Medicine Research Center, Manchester Metropolitan University, Manchester, United Kingdom; Thomas C., Human Performance Laboratory, Directorate of Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom; Comfort P., Human Performance Laboratory, Directorate of Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom, Edith Cowan University, School of Medical and Health Science, WA, Australia; Jones P.A., Human Performance Laboratory, Directorate of Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom","Dos'Santos, T, Thomas, C, Comfort, P, and Jones, PA. Biomechanical effects of a 6-week change of direction speed and technique modification intervention: Implications for change of direction side step performance. J Strength Cond Res 36(10): 2780-2791, 2022 - The aim of this study was to evaluate the biomechanical effects of change of direction (COD) speed and technique modification training on COD performance (completion time, ground contact time [GCT], and exit velocity) during 45° (CUT45) and 90° (CUT90) side step cutting. A nonrandomized, controlled 6-week intervention study was administrated. Fifteen male, multidirectional, sport athletes (age, 23.5 ± 5.2 years; height, 1.80 ± 0.05 m; mass, 81.6 ± 11.4 kg) formed the intervention group (IG) who participated in two 30-minute COD speed and technique modification sessions per week, whereas 12 male, multidirectional, sport athletes (age, 22.2 ± 5.0 years; height, 1.76 ± 0.08 m; mass, 72.7 ± 12.4 kg) formed the control group (CG) and continued their normal training. All subjects performed 6 trials of the CUT45 and CUT90 task whereby pre-to-post intervention changes in lower-limb and trunk kinetics and kinematics were evaluated using 3-dimensional motion and ground reaction force analyses. Two-way mixed analysis of variances revealed significant main effects for time (pre-to-post changes) for CUT45 completion time, exit velocity, and CUT90 completion time (p ≤ 0.045; η2= 0.152-0.539), and significant interaction effects of time and group were observed for CUT45 completion time, GCT, exit velocity, and CUT90 completion time (p ≤ 0.010; η2= 0.239-0.483), with the IG displaying superior performance postintervention compared with the CG (p ≤ 0.109; g = 0.83-1.35). Improvements in cutting performance were moderately to very largely associated (p ≤ 0.078; r or ρ = 0.469-0.846) with increased velocity profiles, increased propulsive forces over shorter GCTs, and decreased knee flexion. Change of direction speed and technique modification is a simple, effective training method requiring minimal equipment that can enhance COD performance, which practitioners should consider incorporating into their pitch- or court-based training programs. © 2022 NSCA National Strength and Conditioning Association. All rights reserved.","cutting; external cues; kinetics; side stepping","Adolescent; Adult; Athletes; Athletic Performance; Biomechanical Phenomena; Humans; Male; Running; Soccer; Young Adult; adult; article; athlete; contact time; controlled study; court; ground reaction force; human; human experiment; intervention study; kinematics; kinetics; knee function; lower limb; male; motion; physician; pitch; training; trunk; velocity; young adult; adolescent; athletic performance; biomechanics; clinical trial; controlled clinical trial; running; soccer","Bencke J., Naesborg H., Simonsen E.B., Klausen K., Motor pattern of the knee joint muscles during side-step cutting in European team handball, Scand J Med Sci Sports, 10, pp. 68-77, (2000); Benjaminse A., Welling W., Otten B., Gokeler A., Transfer of improved movement technique after receiving verbal external focus and video instruction, Knee Surg Sports Traumatol Arthrosc, 26, pp. 955-962, (2018); Bosco C., Komi P.V., Ito A., Prestretch potentiation of human skeletal muscle during ballistic movement, Acta Physiol Scand, 111, pp. 135-140, (1981); Cohen J., The analysis of variance and covariance, Statistical Analysis for the Behavioral Sciences, pp. 273-403, (1988); Dai B., William E.G., Michael T.G., The effects of 2 landing techniques on knee kinematics, kinetics, and performance during stop-jump and side-cutting tasks, Am J Sports Med, 43, pp. 466-474, (2014); De Hoyo M., Sanudo B., Carrasco L., Effects of 10-week eccentric overload training on kinetic parameters during change of direction in football players, J Sports Sci, 34, pp. 1380-1387, (2016); DeWeese B.H., Nimphius S., Haff G.G., Triplett N.T., Program design technique for speed and agility training, Essentials of Strength Training and Conditioning, pp. 521-558, (2016); Dos'Santos T., Comfort P., Jones P.A., Average of trial peaks versus peak of average profile: Impact on change of direction biomechanics, Sports Biomech, 19, pp. 483-492, (2020); Dos'Santos T., McBurnie A., Comfort P., Jones P.A., The effects of six-weeks change of direction speed and technique modification training on cutting performance and movement quality in male youth soccer players, Sports, 7, (2019); Dos'Santos T., Thomas C., Jones P.A., Comfort P., Mechanical determinants of faster change of direction speed performance in male athletes, J Strength Cond Res, 31, pp. 696-705, (2017); Dos'Santos T., McBurnie A., Thomas C., Comfort P., Jones P.A., Biomechanical comparison of cutting techniques: A review and practical applications, Strength Cond J, 41, pp. 40-54, (2019); Dos'Santos T., Thomas C., Comfort P., Jones P.A., The effect of angle and velocity on change of direction biomechanics: An angle-velocity trade-off, Sports Med, 48, pp. 2235-2253, (2018); Dos'Santos T., Thomas C., Comfort P., Jones P.A., The role of the penultimate foot contact during change of direction: Implications on performance and risk of injury, Strength Cond J, 41, pp. 87-104, (2019); Falch H.N., Raedergard H.G., Van Den Tillaar R., Effect of different physical training forms on change of direction ability: A systematic review and meta-analysis, Sports Med Open, 5, (2019); Faul F., Erdfelder E., Buchner A., Lang A.G., Statistical power analyses using G* Power 3.1: Tests for correlation and regression analyses, Behav Res Methods, 41, pp. 1149-1160, (2009); Fox A.S., Spittle M., Otago L., Saunders N., Offensive agility techniques performed during international netball competition, Int J Sports Sci Coach, 9, pp. 543-552, (2014); Gonzalo-Skok O., Tous-Fajardo J., Valero-Campo C., Eccentric-overload training in team-sport functional performance: Constant bilateral vertical versus variable unilateral multidirectional movements, Int J Sports Physiol Perform, 12, pp. 951-958, (2017); Hader K., Palazzi D., Buchheit M., Change of direction speed in soccer: How much braking is enough?, Kineziologija, 47, pp. 67-74, (2015); Havens K.L., Sigward S.M., Cutting mechanics: Relation to performance and anterior cruciate ligament injury risk, Med Sci Sports Exerc, 47, pp. 818-824, (2015); Hopkins W.G., Measures of reliability in sports medicine and science, Sports Med, 30, pp. 1-15, (2000); Hopkins W.G., A Scale of Magnitudes for Effect Statistics. A New View of Statistics; Jones P., Bampouras T.M., Marrin K., An investigation into the physical determinants of change of direction speed, J Sports Med Phys Fitness, 49, pp. 97-104, (2009); Jones P.A., Barber O.R., Smith L.C., Changing pivoting technique reduces knee valgus moments, J Sports Sci, 33, (2015); Jones P.A., Dos' Santos T., McMahon J.J., Graham-Smith P., Contribution of eccentric strength to cutting performance in female soccer players, J Strength Cond Res, 36, pp. 525-533, (2022); Jones P.A., Thomas C., Dos'Santos T., McMahon J., Graham-Smith P., The role of eccentric strength in 180° turns in female soccer players, Sports, 5, (2017); King E., Franklyn-Miller A., Richter C., Clinical and biomechanical outcomes of rehabilitation targeting intersegmental control in athletic groin pain: Prospective cohort of 205 patients, Br J Sports Med, 52, pp. 1054-1062, (2018); Marshall B.M., Franklyn-Miller A.D., King E.A., Biomechanical factors associated with time to complete a change of direction cutting maneuver, J Strength Cond Res, 28, pp. 2845-2851, (2014); McBurnie A., Dos' Santos T., Jones P.A., Biomechanical associates of performance and knee joint loads during an 70-90° cutting maneuver in sub-elite soccer players, J Strength Cond Res, 35, pp. 3190-3198, (2021); Nimphius S., Joyce D., Lewindon D., Increasing agility, High-Performance Training for Sports, pp. 185-198, (2014); Nimphius S., Turner A., Comfort P., Training change of direction and agility, Advanced Strength and Conditioning, pp. 291-308, (2017); Nimphius S., Callaghan S.J., Bezodis N.E., Lockie R.G., Change of direction and agility tests: Challenging our current measures of performance, Strength Cond J, 40, pp. 26-38, (2017); Porter J., Nolan R., Ostrowski E., Wulf G., Directing attention externally enhances agility performance: A qualitative and quantitative analysis of the efficacy of using verbal instructions to focus attention, Front Psychol, 1, (2010); Spiteri T., Cochrane J.L., Hart N.H., Haff G.G., Nimphius S., Effect of strength on plant foot kinetics and kinematics during a change of direction task, Eur J Sports Sci, 13, pp. 646-652, (2013); Spiteri T., Newton R.U., Binetti M., Mechanical determinants of faster change of direction and agility performance in female basketball athletes, J Strength Cond Res, 28, pp. 2205-2214, (2015); Tous-Fajardo J., Gonzalo-Skok O., Arjol-Serrano J.L., Tesch P., Enhancing change-of-direction speed in soccer players by functional inertial eccentric overload and vibration training, Int J Sports Physiol Perform, 11, pp. 66-73, (2015); Welch N., Richter C., Franklyn-Miller A., Moran K., Principal component analysis of the associations between kinetic variables in cutting and jumping, and cutting performance outcome, J Strength Cond Res, 35, pp. 1848-1855, (2021); Welch N., Richter C., Franklyn-Miller A., Moran K., Principal component analysis of the biomechanical factors associated with performance during cutting, J Strength Cond Res, 35, pp. 1715-1723, (2021); Winkelman N.C., Attentional focus and cueing for speed development, Strength Cond J, 40, pp. 13-25, (2018); Winter D.A., Kinematics, Biomechanics and Motor Control of Human Movement, pp. 45-81, (2009); Zahidi N.N.M., Ismail S.I., Notational analysis of evasive agility skills executed by attacking ball carriers among elite rugby players of the 2015 Rugby World Cup, Mov Health Ex, 7, pp. 99-113, (2018)","T. Dos'santos; Human Performance Laboratory, Directorate of Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom; email: t.dossantos@mmu.ac.uk","","NSCA National Strength and Conditioning Association","10648011","","","33651735","English","J. Strength Cond. Res.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85135243017" "Nunome H.; Inoue K.; Watanabe K.; Iga T.; Akima H.","Nunome, Hiroyuki (6507093692); Inoue, Koichiro (55964055200); Watanabe, Kohei (55615714600); Iga, Takahito (55707999300); Akima, Hiroshi (56014609400)","6507093692; 55964055200; 55615714600; 55707999300; 56014609400","Dynamics of submaximal effort soccer instep kicking","2018","Journal of Sports Sciences","36","22","","2588","2595","7","11","10.1080/02640414.2018.1470216","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046129254&doi=10.1080%2f02640414.2018.1470216&partnerID=40&md5=ee595d4e6d78acb0ca77d7a9d772b639","Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan; Faculty of Education, Art and Science, Yamagata University, Yamagata, Japan; School of International Liberal Studies, Chukyo University, Nagoya, Japan; Research Centre of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Japan","Nunome H., Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan; Inoue K., Faculty of Education, Art and Science, Yamagata University, Yamagata, Japan; Watanabe K., School of International Liberal Studies, Chukyo University, Nagoya, Japan; Iga T., Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan; Akima H., Research Centre of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Japan","During a soccer match, players are often required to control the ball velocity of a kick. However, little information is available for the fundamental qualities associated with kicking at various effort levels. We aimed to illustrate segmental dynamics of the kicking leg during soccer instep kicking at submaximal efforts. The instep kicking motion of eight experienced university soccer players (height: 172.4 ± 4.6 cm, mass: 63.3 ± 5.2 kg) at 50, 75 and 100% effort levels were recorded by a motion capture system (500 Hz), while resultant ball velocities were monitored using a pair of photocells. Between the three effort levels, kinetic adjustments were clearly identified in both proximal and distal segments with significantly different (large effect sizes) angular impulses due to resultant joint and interaction moments. Also, players tended to hit an off-centre point on the ball using a more medial contact point on the foot and with the foot in a less upright position in lower effort levels. These results suggested that players control their leg swing in a context of a proximal to distal segmental sequential system and add some fine-tuning of the resultant ball velocity by changing the manner of ball impact. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.","joint moment; motion-dependent interaction; Soccer kick; submaximal effort","Biomechanical Phenomena; Foot; Humans; Knee; Leg; Lower Extremity; Male; Motor Skills; Movement; Muscle, Skeletal; Soccer; Thigh; Time and Motion Studies; Young Adult; biomechanics; foot; human; knee; leg; lower limb; male; motor performance; movement (physiology); physiology; skeletal muscle; soccer; task performance; thigh; young adult","Ae M., Tang H., Yokoi T., Estimation of inertial properties on the body segments in Japanese athletes, Society of Biomechanisms Japan (Eds.), Biomechanisms 11: Form, motion, and function in humans, pp. 23-33, (1992); Andersen T.B., Dorge H.C., The influence of speed of approach and accuracy constrain on the maximal speed of the ball in soccer kicking, Scandinavian Journal of Medicine & Science in Sports, 21, 1, pp. 79-84, (2011); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Augustus S., Mundy P., Smith H., Support leg action can contribute to maximal instep soccer kick performance: An intervention study, Journal of Sports Sciences, 35, pp. 89-98, (2017); Barfield W.R., Effects of selected kinematic and kinetic variables on instep kicking with dominant and nondominant limbs, Journal of Human Movement Studies, 29, pp. 251-272, (1995); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, 8, pp. 293-299, (2002); Faul F., Erdfelder E., Lang A.-G., Buchner A., G*Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences, Behavior Research Methods, 39, pp. 175-191, (2007); Hanson H., Harland A., Holmes C., Lucas T., Method for understanding football ball motions using video-based notational analysis, Procedia Engineering, 34, pp. 164-169, (2012); Inoue K., Nunome H., Sterzing T., Shinkai H., Ikegami Y., Dynamics of the support leg in soccer instep kicking, Journal of Sports Sciences, 32, pp. 1023-1032, (2014); Isokawa M., Lees A., A biomechanical analysis of the instep kick motion in soccer, Science & Football, pp. 449-455, (1988); Katis A., Giannadakis E., Kannas T., Amiridis I., Kellis E., Lees A., Mechanisms that influence accuracy of the soccer kick, Journal of Electromyography and Kinesiology, 23, 1, pp. 125-131, (2013); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, pp. 805-817, (2010); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, 3, pp. 211-234, (1998); Levanon J., Dapena J., Comparison of the kinematics of the full-instep kick and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, pp. 917-927, (1998); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine & Science in Sports & Exercise, 34, pp. 2028-2036, (2002); Nunome H., Ikegami Y., The effect of hip linear motion on lower leg angular velocity during soccer instep kicking, Proceedings of the XXIIIrd symposium of the international society of biomechanics in sports, pp. 770-772, (2005); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 24, pp. 529-541, (2006); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, Journal of Sports Sciences, 24, pp. 11-22, (2006); Putnam C.A., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Medicine & Science in Sports & Exercise, 23, pp. 130-144, (1991); Roberts E.M., Metcalfe A., Mechanical analysis of kicking, Biomechanics I, pp. 315-319, (1968); Rodano R., Tavana R., Three-dimensional analysis of instep kick in professional soccer players, Science & Football II, pp. 441-448, (1993); Scurr J., Abbott V., Ball N., Quadriceps EMG muscle activation during accurate soccer instep kicking, Journal of Sports Sciences, 29, pp. 247-251, (2011); Scurr J., Hall B., The effects of approach angle on penalty kicking accuracy and kick kinematics with recreational soccer players, Journal of Sports Sciences & Medicine, 8, pp. 230-234, (2009); Sprigings E., Marshall R., Elliot B., Jennings L., A three-dimensional kinematic method for determining the effective of arm segment rotations in producing racquet-head speed, Journal of Biomechanics, 27, pp. 245-254, (1994); Teixeira L., Kinematics of kicking as a function of different sources of constraint on accuracy, Perceptual and Motor Skills, 88, pp. 785-789, (1999)","H. Nunome; Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan; email: nunome@fukuoka-u.ac.jp","","Routledge","02640414","","JSSCE","29714671","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-85046129254" "Murtagh C.F.; Naughton R.J.; McRobert A.P.; O’Boyle A.; Morgans R.; Drust B.; Erskine R.M.","Murtagh, Conall F. (56536788600); Naughton, Robert J. (56520033900); McRobert, Allistair P. (28767851000); O’Boyle, Andrew (57202339226); Morgans, Ryland (56024877200); Drust, Barry (8076138400); Erskine, Robert M. (26633733900)","56536788600; 56520033900; 28767851000; 57202339226; 56024877200; 8076138400; 26633733900","A Coding System to Quantify Powerful Actions in Soccer Match Play: A Pilot Study","2019","Research Quarterly for Exercise and Sport","90","2","","234","243","9","9","10.1080/02701367.2019.1576838","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85066143282&doi=10.1080%2f02701367.2019.1576838&partnerID=40&md5=2371ce2cf870a38c2bd86fcaea5d873d","Liverpool John Moores University, United Kingdom; Liverpool Football Club, United Kingdom; University of Huddersfield, United Kingdom; Celtic Football Club, United Kingdom; Football Association of Wales, United Kingdom; University College London, United Kingdom","Murtagh C.F., Liverpool John Moores University, United Kingdom, Liverpool Football Club, United Kingdom; Naughton R.J., University of Huddersfield, United Kingdom, Celtic Football Club, United Kingdom; McRobert A.P., Liverpool John Moores University, United Kingdom; O’Boyle A., Liverpool John Moores University, United Kingdom, Liverpool Football Club, United Kingdom; Morgans R., Football Association of Wales, United Kingdom; Drust B., Liverpool John Moores University, United Kingdom, Liverpool Football Club, United Kingdom; Erskine R.M., Liverpool John Moores University, United Kingdom, University College London, United Kingdom","Purpose: The powerful activity profile of elite soccer match play has not been documented appropriately to inform specific maximal power assessment and development criteria. The aims of the current study were to develop a reliable  soccer-specific powerful action (SSPA) notational analysis coding system that could be used to compare frequency and durations of powerful actions during elite youth soccer match play. Methods: Sixteen elite male English Premier League (EPL) Academy players (19 ± 1 yrs) were recorded by an individual camera during 16 competitive EPL U18 and U21 games. Video footage was analyzed using performance analysis software and SSPAs were coded according to the following categories: initial acceleration, leading acceleration, sprint, unilateral jump and bilateral jump. Results: The SSPA coding system demonstrated very good inter- and intra-rater reliability (kappa coefficients ≥ 0.827). Elite youth EPL soccer players undertook significantly more initial (31 ± 9) and leading (37 ± 12) accelerations than sprints (8 ± 3; p = .014, d = 1.7, and p < .001, d = 1.7, respectively) and jumps (6 ± 5; p = .002, d = 1.7 and p < .001, d = 1.7, respectively). Players performed a significantly greater number of initial and leading accelerations with action durations below 1.5 s compared to above 1.5 s (p = .001, d = 1.6, and p = .002, d = 1.4), respectively. Conclusions: Our SSPA coding system provides a reliable observational instrument for quantifying the frequency and duration of powerful actions performed during elite soccer match play. In our sample of elite youth soccer players, horizontal accelerations of short duration (< 1.5 s) from different starting speeds appear the most dominant powerful action in elite youth soccer match play. © 2019, © 2019 SHAPE America.","biomechanics; Locomotion; movement components; pediatric exercise","Acceleration; Adolescent; Athletic Performance; Biomechanical Phenomena; Classification; Humans; Male; Motor Skills; Pilot Projects; Reproducibility of Results; Soccer; Time and Motion Studies; Young Adult; acceleration; adult; article; biomechanics; exercise; human; intrarater reliability; juvenile; kappa statistics; locomotion; male; pilot study; soccer player; software; videorecording; adolescent; athletic performance; biomechanics; classification; motor performance; physiology; pilot study; procedures; reproducibility; soccer; task performance; young adult","Akenhead R., French D., Thompson K.G., Hayes P.R., The acceleration dependent validity and reliability of 10 Hz GPS, Journal of Science and Medicine in Sport, 17, 5, pp. 562-566, (2014); Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in FA Premier League soccer, Journal of Sports Science & Medicine, 6, 1, (2007); Bradley P.S., Di Mascio M., Peart D., Olsen P., Sheldon B., High-intensity activity profiles of elite soccer players at different performance levels, Journal of Strength and Conditioning Research, 24, 9, pp. 2343-2351, (2010); Bradley P.S., Sheldon W., Wooster B., Olsen P., Boanas P., Krustrup P., High-intensity running in English FA Premier League soccer matches, Journal of Sports Sciences, 27, 2, pp. 159-168, (2009); Brewer C.J., Jones R.L., A five-stage process for establishing contextually valid systematic observation instruments: The case of rugby union, The Sport Psychologist, 16, 2, pp. 138-159, (2002); Carling C., Bloomfield J., Nelsen L., Reilly T., The role of motion analysis in elite soccer: Contemporary performance measurement techniques and work rate data, Sports Medicine, 38, 10, pp. 839-862, (2008); Cometti G., Maffiuletti N.A., Pousson M., Chatard J.C., Maffulli N., Isokinetic strength and anaerobic power of elite, subelite and amateur French soccer players, International Journal of Sports Medicine, 22, 1, pp. 45-51, (2001); Cormie P., McGuigan M.R., Newton R.U., Developing maximal neuromuscular power: Part 1–Biological basis of maximal power production, Sports Medicine, 41, 1, pp. 17-38, (2011); Cotte T., Chatard J.C., Isokinetic strength and sprint times in English premier league football players, Biology of Sport, 28, 2, (2011); Di Salvo V., Baron R., Gonzalez-Haro C., Gormasz C., Pigozzi F., Bachl N., Sprinting analysis of elite soccer players during European Champions League and UEFA Cup matches, Journal of Sports Sciences, 28, 14, pp. 1489-1494, (2010); Dobbs C.W., Gill N.D., Smart D.J., McGuigan M.R., Relationship between vertical and horizontal jump variables and muscular performance in athletes, Journal of Strength & Conditioning Research, 29, 3, pp. 661-671, (2015); Dogramac S.N., Watsford M.L., Murphy A.J., The reliability and validity of subjective notational analysis in comparison to global positioning system tracking to assess athlete movement patterns, Journal of Strength & Conditioning Research, 25, 3, pp. 852-859, (2011); Faude O., Koch T., Meyer T., Straight sprinting is the most frequent action in goal situations in professional football, Journal of Sports Sciences, 30, 7, pp. 625-631, (2012); Issurin V.B., Training transfer: Scientific background and insights for practical application, Sports Medicine, 43, 8, pp. 675-694, (2013); Jennings D., Cormack S., Coutts A.J., Boyd L., Aughey R.J., The validity and reliability of GPS units for measuring distance in team sport specific running patterns, International Journal of Sports Physiology and Performance, 5, 3, pp. 328-341, (2010); Little T., Williams A.G., Specificity of acceleration, maximum speed, and agility in professional soccer players, Journal of Strength & Conditioning Research, 19, 1, pp. 76-78, (2005); Maulder P., Cronin J., Horizontal and vertical jump assessment: Reliability, symmetry, discriminative and predictive ability, Physical Therapy in Sport, 6, 2, pp. 74-82, (2005); Meylan C.M., Nosaka K., Green J., Cronin J.B., Temporal and kinetic analysis of unilateral jumping in the vertical, horizontal, and lateral directions, Journal of Sports Sciences, 28, 5, pp. 545-554, (2010); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, Journal of Sports Sciences, 21, 7, pp. 519-528, (2003); Murtagh C.F., Vanrenterghem J., O'Boyle A., Morgans R., Drust B., Erskine R.M., Unilateral jumps in different directions: A novel assessment of soccer-associated power?, Journal of Science and Medicine in Sport, 20, 11, pp. 1018-1023, (2017); Nevill A.M., Atkinson G., Assessing agreement between measurements recorded on a ratio scale in sports medicine and sports science, British Journal of Sports Medicine, 31, 4, pp. 314-318, (1997); Paul D.J., Bradley P.S., Nassis G.P., Factors affecting match running performance of elite soccer players: Shedding some light on the complexity, International Journal of Sports Physiology and Performance, 10, 4, pp. 516-519, (2015); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer: An update, Sports Medicine, 35, 6, pp. 501-536, (2005); Varley M.C., Aughey R.J., Acceleration profiles in elite Australian soccer, International Journal of Sports Medicine, 34, 1, pp. 34-39, (2013)","C.F. Murtagh; School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, L3 3AF, United Kingdom; email: C.F.Murtagh@ljmu.ac.uk","","Routledge","02701367","","RQESD","30882290","English","Res. Q. Exerc. Sport","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85066143282" "Kawai T.; Takamoto K.; Bito I.","Kawai, Tomonori (57223326956); Takamoto, Kouichi (35792894300); Bito, Itsumu (57223314569)","57223326956; 35792894300; 57223314569","Previous hamstring muscle strain injury alters passive tissue stiffness and vibration sense","2021","Journal of Bodywork and Movement Therapies","27","","","573","578","5","10","10.1016/j.jbmt.2021.05.002","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107788174&doi=10.1016%2fj.jbmt.2021.05.002&partnerID=40&md5=6c70bbdd930bc8b1946791c92c42f9e2","Department of Sports and Health Sciences, Faculty of Human Sciences, University of East Asia, Yamaguchi, Japan","Kawai T., Department of Sports and Health Sciences, Faculty of Human Sciences, University of East Asia, Yamaguchi, Japan; Takamoto K., Department of Sports and Health Sciences, Faculty of Human Sciences, University of East Asia, Yamaguchi, Japan; Bito I., Department of Sports and Health Sciences, Faculty of Human Sciences, University of East Asia, Yamaguchi, Japan","Background: Hamstring strain is one of the most common among sports injuries. A previous history of this injury is considered a strong predictor of recurrent hamstring strain injury. It has been suggested that fascial tissue alters after muscle strain injury. However, the association between previous hamstring strain injury and tissue stiffness and vibration sense detection has not been investigated. Objectives: We aimed to determine whether a previous history of hamstring strain injury affects tissue stiffness and vibration sense in professional soccer players. Method: The stiffness (MyotonPRO®) and vibration disappearance threshold (tuning fork) were measured in eight professional soccer players with previous history of hamstring strain and eight uninjured players. The differences between two groups’ means were analyzed. Side-to-side differences between injured and uninjured legs were also analyzed. Results: The tissue stiffness was higher, and the vibration detection threshold was lower, in previously injured players when compared to uninjured players. Similar differences were found between injured and uninjured legs. No significant relationship was detected between the age or body mass index (BMI) for both tissue stiffness and vibration detection threshold (all P < 0.05). Conclusions: Soccer players with a previous history of hamstring strain injury exhibited higher tissue stiffness and lower vibration sensitivity in the injured leg, regardless of the age and BMI. The results that players who have a previous hamstring strain injury with altered tissue stiffness and vibration sense will be useful and feasible evaluation for chronic muscle strain condition. © 2021 Elsevier Ltd","Altered sensory function; Muscle strain injury; Tissue stiffness; Vibration sense","Athletic Injuries; Hamstring Muscles; Humans; Muscular Diseases; Soccer; Vibration; adult; age; Article; athlete; biomechanics; body mass; clinical article; controlled study; cycling; echography; elastography; electromyography; gastrocnemius muscle; goniometry; grip strength; hamstring muscle; human; male; motor nerve conduction; muscle contraction; muscle strain; muscle strength; neurorehabilitation; questionnaire; rigidity; skin temperature; soccer; soccer player; test retest reliability; ulnar nerve; vibration; vibration sense; waveform; hamstring muscle; injury; muscle disease; soccer; sport injury","Adstrum S., Hedley G., Schleip R., Stecco C., Yucesoy C.A., Defining the fascial system, J. 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A systematic review and meta-analysis of the prevalence of extramuscular connective tissue Lesions in muscle strain injury, Orthopaedic Journal of Sports Medicine, 7, (2019); Yanagisawa O., Sakuma J., Kawakami Y., Effect of exercise-induced muscle damage on muscle hardness evaluated by ultrasound real-time tissue elastography, SpringerPlus, 4, (2015); Zugel M., Maganaris C.N., Wilke J., Jurkat-Rott K., Klingler W., Wearing S.C., Et al., Fascial tissue research in sports medicine: from molecules to tissue adaptation, injury and diagnostics: consensus statement, Br. J. Sports Med., 52, (2018)","T. Kawai; Department of Sports and Health Sciences, Faculty of Human Sciences, University of East Asia, Yamaguchi, Japan; email: tomochiro@toua-u.ac.jp","","Churchill Livingstone","13608592","","JBOTF","34391289","English","J. Bodywork Mov. Ther.","Article","Final","","Scopus","2-s2.0-85107788174" "Torreblanca-Martinez V.; Nevado-Garrosa F.; Otero-Saborido F.M.; Gonzalez-Jurado J.A,.","Torreblanca-Martinez, Victor (57193742255); Nevado-Garrosa, Fabio (56676306300); Otero-Saborido, Fernando M. (56242397000); Gonzalez-Jurado, Jose A. (23980085500)","57193742255; 56676306300; 56242397000; 23980085500","Effects of fatigue induced by repeated-sprint on kicking accuracy and velocity in female soccer players","2020","PLoS ONE","15","1","e0227214","","","","9","10.1371/journal.pone.0227214","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85077717526&doi=10.1371%2fjournal.pone.0227214&partnerID=40&md5=6be2edfbfb28e9381887046477f0f708","Faculty of Sport Sciences, Pablo de Olavide University, Seville, Spain; Department of Physical Education, Sport and Human Movement, Autonomous University of Madrid, Madrid, Spain","Torreblanca-Martinez V., Faculty of Sport Sciences, Pablo de Olavide University, Seville, Spain; Nevado-Garrosa F., Department of Physical Education, Sport and Human Movement, Autonomous University of Madrid, Madrid, Spain; Otero-Saborido F.M., Faculty of Sport Sciences, Pablo de Olavide University, Seville, Spain; Gonzalez-Jurado J.A,., Faculty of Sport Sciences, Pablo de Olavide University, Seville, Spain","The aim of this study was to investigate the effects of fatigue induced by repeated sprint in the kicking accuracy and velocity in female soccer players. Eighteen Under-23 female soccer players from a Spanish professional club were subjected to a fatigue protocol based on a repeated-sprint ability (RSA) test. Measurements of the kicking velocity (maximal ball velocity) and accuracy (Loughborough Soccer Shooting Test) were taken before and after fatigue induction. Correlations between the change in the maximal ball velocity/accuracy and the heart rate (HR), the fatigue index (FI), the sprint decrement (Sdec) and the rating of perceived exertion (RPE) were made. There was a significant difference between maximal ball velocity under fatigue conditions with respect to non-fatigue conditions (p = 0.001; ES = 0.89). However, despite a lower kicking accuracy punctuation with fatigue, this was not statistically significant (p = 0.433; ES = 0.22). Significant correlations were found between the maximal kicking velocity and the FI (r = 0.632, p < 0.01) and the Sdec (r = -0.554, p < 0.05) and between the kicking accuracy and the RPE (r = -0.506, p < 0.05). In conclusion, there was a significant reduction in the maximal kicking velocity, but not in the kicking accuracy, under fatigued conditions. The RSA-related FI and Sdec were the best predictors of the maximal kicking velocity and the RPE for the kicking accuracy. © 2020 Torreblanca-Mart?nez et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.","","Adolescent; Athletes; Athletic Performance; Exercise Test; Female; Humans; Muscle Fatigue; Running; Soccer; Spain; Young Adult; adult; Article; biomechanics; body mass; body movement; controlled study; descriptive research; fatigue; fatigue index; female; heart rate; human; human experiment; kicking velocity; Loughborough Soccer Shooting Test; measurement accuracy; measurement repeatability; rating of perceived exertion; reliability; repeated sprint ability test; soccer player; sports and sport related phenomena; sprint decrement; velocity; adolescent; athlete; athletic performance; exercise test; muscle fatigue; physiology; running; soccer; Spain; young adult","Rodriguez-Lorenzo L., Fernandez-Del-Olmo M., Martin-Acero R., A critical review of the technique parameters and sample features of maximal kicking velocity in soccer, Strength and Conditioning Journal, 37, pp. 26-39, (2015); 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Sedano Campo S., Vaeyens R., Philippaerts R.M., Redondo J.C., De Benito A.M., Et al., Effects of lower-limb plyometric training on body composition, explosive strength, and kicking speed in female soccer players, J Strength Cond Res, 23, pp. 1714-1722, (2009); De Witt J.K., Hinrichs R.N., Mechanical factors associated with the development of high ball velocity during an instep soccer kick, Sports Biomech, 11, pp. 382-390, (2012); Van Den Tillaar R., Fuglstad P., Effect of instructions prioritizing speed or accuracy on kinematics and kicking performance in football players, J Mot Behav, pp. 1-8, (2016)","V. Torreblanca-Martinez; Faculty of Sport Sciences, Pablo de Olavide University, Seville, Spain; email: victm81@hotmail.com","","Public Library of Science","19326203","","POLNC","31910235","English","PLoS ONE","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85077717526" "Arundale A.J.H.; Kvist J.; Hägglund M.; Fältström A.","Arundale, Amelia J. H. (56529660500); Kvist, Joanna (6701797719); Hägglund, Martin (6602402288); Fältström, Anne (55949393300)","56529660500; 6701797719; 6602402288; 55949393300","Jumping performance based on duration of rehabilitation in female football players after anterior cruciate ligament reconstruction","2019","Knee Surgery, Sports Traumatology, Arthroscopy","27","2","","556","563","7","8","10.1007/s00167-018-5154-5","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054175361&doi=10.1007%2fs00167-018-5154-5&partnerID=40&md5=f112344f8667fb3b3be30dd8f268c7ab","Division of Physiotherapy, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden; Division of Physiotherapy, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden; Football Research Group, Linköping University, Linköping, Sweden; Region Jönköping County, Rehabilitation Centre, Ryhov County Hospital, Jönköping, 551 85, Sweden","Arundale A.J.H., Division of Physiotherapy, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden; Kvist J., Division of Physiotherapy, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden, Division of Physiotherapy, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden; Hägglund M., Division of Physiotherapy, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden, Football Research Group, Linköping University, Linköping, Sweden; Fältström A., Division of Physiotherapy, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden, Region Jönköping County, Rehabilitation Centre, Ryhov County Hospital, Jönköping, 551 85, Sweden","Purpose: To determine if female football players who had longer durations of rehabilitation, measured in months, after anterior cruciate ligament reconstruction would have lower tuck jump scores (fewer technique flaws) and smaller asymmetries during drop vertical jump landing. Methods: One-hundred-and-seventeen female football players, aged 16–25 years, after primary unilateral ACL reconstruction (median 16 months, range 6–39) were included. Athletes reported the duration of rehabilitation they performed after anterior cruciate ligament reconstruction. Athletes also performed the tuck jump and drop vertical jump tests. Outcome variables were: tuck jump score, frontal plane knee motion and probability of peak knee abduction moment during drop vertical jump landing. Results: There was no difference in tuck jump score based on duration of rehabilitation (n.s.). No interaction (n.s.), difference between limbs (n.s.), or duration of rehabilitation (n.s.) was found for peak knee abduction moment during drop vertical jump landing. No interaction (n.s.) or difference between limbs (n.s.) was found for frontal plane knee motion, but there was a difference based on duration of rehabilitation (P = 0.01). Athletes with > 9 months of rehabilitation had more frontal plane knee motion (medial knee displacement) than athletes with < 6 months (P = 0.01) or 6–9 months (P = 0.03). Conclusion: As there was no difference in tuck jump score or peak knee abduction moment based on duration of rehabilitation, the results of this study press upon clinicians the importance of using objective measures to progress rehabilitation and clear athletes for return to sport, rather than time alone. Level of evidence: II. © 2018, The Author(s).","ACL injury; Soccer; Valgus","Adolescent; Adult; Anterior Cruciate Ligament Injuries; Anterior Cruciate Ligament Reconstruction; Biomechanical Phenomena; Female; Humans; Internet; Movement; Range of Motion, Articular; Return to Sport; Soccer; Surveys and Questionnaires; Young Adult; adolescent; adult; anterior cruciate ligament injury; anterior cruciate ligament reconstruction; biomechanics; female; human; injuries; Internet; joint characteristics and functions; movement (physiology); questionnaire; return to sport; soccer; young adult","Ardern C.L., Taylor N.F., Feller J.A., Webster K.E., 55% return to competitive sport following anterior cruciate ligament reconstruction surgery: an updated systematic review and meta-analysis including aspects of physical functioning and contextual factors, Br J Sports Med, 48, pp. 1543-1552, (2014); Ardern C.L., Webster K.E., Taylor N.F., Feller J.A., Return to the preinjury level of competitive sport after anterior cruciate ligament reconstruction surgery: two-thirds of patients have not returned by 12months after surgery, Am J Sports Med, 39, pp. 538-543, (2011); 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Krosshaug T., Steffen K., Kristianslund E., Nilstad A., Mok K.-M., Myklebust G., Et al., The vertical drop jump is a poor screening test for acl injuries in female elite soccer and handball players: a prospective cohort study of 710 athletes, Am J Sports Med, 44, pp. 874-883, (2016); Laboute E., Savalli L., Puig P., Trouve P., Sabot G., Monnier G., Et al., Analysis of return to competition and repeat rupture for 298 anterior cruciate ligament reconstructions with patellar or hamstring tendon autograft in sportspeople, Ann Phys Rehabil Med, 53, pp. 598-614, (2010); Mayhew L., Johnson M.I., Francis P., Snowdon N., Jones G., Inter-rater reliability, internal consistency and common technique flaws of the tuck jump assessment in elite female football players, Sci Med Football, 1, pp. 139-144, (2017); Myer G., Paterno M.V., Ford K.R., Quatman C.E., Hewett T.E., Rehabilitation after anterior cruciate ligament reconstruction: criteria-based progression through the return-to-sport phase, J Orthop Sports Phys Ther, 36, pp. 385-402, (2006); 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Nagelli C.V., Hewett T.E., Should return to sport be delayed until 2years after anterior cruciate ligament reconstruction? Biological and functional considerations, Sports Med, 47, pp. 221-232, (2017); Ortiz A., Rosario-Canales M., Rodriguez A., Seda A., Figueroa C., Venegas-Rios H.L., Reliability and concurrent validity between two-dimensional and three-dimensional evaluations of knee valgus during drop jumps, Open Access J Sports Med, 7, pp. 65-73, (2016); Paterno M., Schmitt L., Ford K., Rauh M., Myer G., Huang B., Et al., Biomechanical measures during landing and postural stability predict second anterior cruciate ligament injury after anterior cruciate ligament reconstruction and return to sport, Am J Sports Med, 38, pp. 1968-1978, (2010); Paterno M.V., Rauh M.J., Schmitt L.C., Ford K.R., Hewett T.E., Incidence of contralateral and ipsilateral anterior cruciate ligament (ACL) injury after primary ACL reconstruction and return to sport, Clin J Sports Med, 22, pp. 116-121, (2012); Paterno M.V., Rauh M.J., Schmitt L.C., Ford K.R., Hewett T.E., Incidence of second ACL injuries 2years after primary ACL reconstruction and return to sport, Am J Sports Med, 42, pp. 1567-1573, (2014); Rambaud A.J.M., Ardern C.L., Thoreux P., Regnaux J.-P., Edouard P., Criteria for return to running after anterior cruciate ligament reconstruction: a scoping review, Br J Sports Med, (2018); Read P.J., Oliver J.L., de Ste Croix M.B., Myer G.D., Lloyd R.S., Reliability of the tuck jump injury risk screening assessment in elite male youth soccer players, J Strength Cond Res, 30, pp. 1510-1516, (2016); Shelbourne K.D., Gray T., Haro M., Incidence of subsequent injury to either knee within 5years after anterior cruciate ligament reconstruction with patellar tendon autograft, Am J Sports Med, 37, pp. 246-251, (2009); Sonesson S., Kvist J., Ardern C., Osterberg A., Silbernagel K.G., Psychological factors are important to return to pre-injury sport activity after anterior cruciate ligament reconstruction: expect and motivate to satisfy, Knee Surg Sport Traumatol Arthrosc, 25, pp. 1375-1384, (2017)","A. Fältström; Region Jönköping County, Rehabilitation Centre, Ryhov County Hospital, Jönköping, 551 85, Sweden; email: anne.faltstrom@rjl.se","","Springer Verlag","09422056","","","30267186","English","Knee Surg. Sports Traumatol. Arthroscopy","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85054175361" "Zhang Q.; Pommerell F.; Owen A.; Trama R.; Martin C.; Hautier C.A.","Zhang, Qingshan (57219965780); Pommerell, Félicie (57221911763); Owen, Adam (50262685600); Trama, Robin (57193950742); Martin, Cyril (37960890400); Hautier, Christophe A. (6602726583)","57219965780; 57221911763; 50262685600; 57193950742; 37960890400; 6602726583","Running patterns and force-velocity sprinting profiles in elite training young soccer players: A cross-sectional study","2021","European Journal of Sport Science","21","12","","1718","1726","8","8","10.1080/17461391.2020.1866078","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100599141&doi=10.1080%2f17461391.2020.1866078&partnerID=40&md5=e0629e3dbe84c851bf18cacaca61f81f","Univ. Lyon, UCBL-Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité, Villeurbanne, France; Laboratoire Motricité, Interactions, Performance, MIP–EA4334, Le Mans Université, Le Mans Cedex 9, France","Zhang Q., Univ. Lyon, UCBL-Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité, Villeurbanne, France; Pommerell F., Laboratoire Motricité, Interactions, Performance, MIP–EA4334, Le Mans Université, Le Mans Cedex 9, France; Owen A., Univ. Lyon, UCBL-Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité, Villeurbanne, France; Trama R., Univ. Lyon, UCBL-Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité, Villeurbanne, France; Martin C., Univ. Lyon, UCBL-Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité, Villeurbanne, France; Hautier C.A., Univ. Lyon, UCBL-Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité, Villeurbanne, France","The Volodalen® field method permits to classify runners into aerial or terrestrial, based on vertical oscillation, upper-body motion, pelvis and foot position at ground contact, and foot strike pattern. The present study aimed to compare the sprint running force-velocity profiles between aerial and terrestrial runners. Sixty-Four French National-Level young soccer players (28 females, 36 males) performed three trials of unloaded maximal 40 m sprints. External horizontal power-force-velocity relationships were computed using a validated biomechanical model and based on the velocity-time curve. Accordingly, the participants were classified into patterns in aerial and terrestrial runners. Terrestrial runners showed a higher maximal horizontal force (F 0) (6.73 ± 1.03 vs 6.01 ± 0.94 N·kg−1), maximal horizontal power (P max) (14.04 ± 3.24 vs 12.51 ± 3.31W·kg−1), maximal acceleration (Acc) (6.83 ± 0.85 vs 6.26 ± 0.89 m·s−2), and maximal rate of horizontal force (RF max) (57.41 ± 4.64 vs 52.81 ± 5.69%) compared to aerial runners. In contrast, terrestrial runners displayed a more negative rate of decrease of RF (D RF) (−11.65 ± 1.71 vs −10.23 ± 1.66%) and slope of the Force-Velocity relationship (F-V slope) (−0.83 ± 0.11 vs −0.77 ± 0.10 N·s·m−1·kg−1) than aerial runners. The results indicate that terrestrial runners displayed more efficient force production in the forward direction and displayed more “force-oriented” F-V profiles. Nevertheless, aerial runners were more effective in maintaining a net horizontal force production with increasing speed. Our results suggest that terrestrial runners could be more adapted to the specific short distance and high acceleration sprints running. © 2021 European College of Sport Science.","maximal force; maximal power; mechanical properties; Sprint kinetics","Acceleration; Athletic Performance; Biomechanical Phenomena; Cross-Sectional Studies; Female; Humans; Male; Running; Soccer; acceleration; adult; article; clinical article; cross-sectional study; female; human; male; physical model; runner; running; soccer player; acceleration; athletic performance; biomechanics; cross-sectional study; soccer","Ahn A.N., Brayton C., Bhatia T., Martin P., Muscle activity and kinematics of forefoot and rearfoot strike runners, Journal of Sport and Health Science, 3, 2, pp. 102-112, (2014); Andrzejewski M., Chmura J., Pluta B., Kasprzak A., Analysis of motor activities of professional soccer players, Journal of Strength and Conditioning Research, 26, 6, pp. 1481-1488, (2012); Andrzejewski M., Chmura J., Pluta B., Strzelczyk R., Kasprzak A., Analysis of sprinting activities of professional soccer players, Journal of Strength and Conditioning Research, 27, 8, pp. 2134-2140, (2013); Buchheit M., Samozino P., Glynn J.A., Michael B.S., Al Haddad H., Mendez-Villanueva A., Morin J.B., Mechanical determinants of acceleration and maximal sprinting speed in highly trained young soccer players, Journal of Sports Sciences, 32, 20, pp. 1906-1913, (2014); Clark K.P., Ryan L.J., Weyand P.G., Foot speed, foot-strike and footwear: Linking gait mechanics and running ground reaction forces, Journal of Experimental Biology, 217, 12, pp. 2037-2040, (2014); Faude O., Koch T., Meyer T., Straight sprinting is the most frequent action in goal situations in professional football, Journal of Sports Sciences, 30, 7, pp. 625-631, (2012); Gindre C., Lussiana T., Hebert-Losier K., Mourot L., Aerial and terrestrial patterns: A novel approach to analyzing human running, International Journal of Sports Medicine, 37, 1, pp. 25-26, (2016); Haugen T., McGhie D., Ettema G., Sprint running: From fundamental mechanics to practice—a review, European Journal of Applied Physiology, 119, 6, pp. 1273-1287, (2019); Haugen T., Tonnessen E., Hisdal J., Seiler S., The role and development of sprinting speed in soccer, International Journal of Sports Physiology and Performance, 9, 3, pp. 432-441, (2014); Hayes P., Caplan N., Foot strike patterns and ground contact times during high-calibre middle-distance races, Journal of Sports Sciences, 30, 12, pp. 1275-1283, (2012); Hedges L.V., Distribution theory for glass’s estimator of effect size and related estimators, Journal of Educational Statistics, 6, 2, pp. 107-128, (1981); Hunter J.P., Marshall R.N., McNair P.J., Relationships between ground reaction force impulse and kinematics of sprint-running acceleration, Journal of Applied Biomechanics, 21, 1, pp. 31-43, (2005); Kawamori N., Nosaka K., Newton R.U., Relationships between ground reaction impulse and sprint acceleration performance in team sport athletes, Journal of Strength and Conditioning Research, 27, 3, pp. 568-573, (2013); Lussiana T., Gindre C., Feel your stride and find your preferred running speed, Biology Open, 5, 1, pp. 45-48, (2016); Lussiana T., Gindre C., Hebert-Losier K., Sagawa Y., Gimenez P., Mourot L., Similar running economy with different running patterns along the aerial-terrestrial continuum, International Journal of Sports Physiology and Performance, 12, 4, pp. 481-489, (2017); Lussiana T., Gindre C., Mourot L., Hebert-Losier K., Do subjective assessments of running patterns reflect objective parameters?, European Journal of Sport Science, 17, 7, pp. 847-857, (2017); Minano-Espin J., Casais L., Lago-Penas C., Gomez-Ruano M., High speed running and sprinting profiles of elite soccer players, Journal of Human Kinetics, 58, pp. 169-176, (2017); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, Journal of Sports Sciences, 21, 7, pp. 519-528, (2003); Morin J.-B., Bourdin M., Edouard P., Peyrot N., Samozino P., Lacour J.-R., Mechanical determinants of 100-m sprint running performance, European Journal of Applied Physiology, 112, 11, pp. 3921-3930, (2012); Morin J.B., Edouard P., Samozino P., Technical ability of force application as a determinant factor of sprint performance, Medicine & Science in Sports & Exercise, 43, 9, pp. 1680-1688, (2011); Morin J.B., Samozino P., Interpreting power-force-velocity profiles for individualized and specific training, International Journal of Sports Physiology and Performance, 11, 2, pp. 267-272, (2016); Patoz A., Gindre C., Mourot L., Lussiana T., Intra and inter-rater reliability of the Volodalen® scale to assess aerial and terrestrial running forms, Journal of Athletic Enhancement, 8, (2019); Rodacki A.L., Fowler N.E., Bennett S.J., Multi-segment coordination: Fatigue effects, Medicine and Science in Sports and Exercise, 33, 7, pp. 1157-1167, (2001); Romanov N., Fletcher G., Runners do not push off the ground but fall forwards via a gravitational torque, Sports Biomechanics, 6, 3, pp. 434-452, (2007); Ruddy J.D., Pollard C.W., Timmins R.G., Williams M.D., Shield A.J., Opar D.A., Running exposure is associated with the risk of hamstring strain injury in elite Australian footballers, British Journal of Sports Medicine, 52, 14, pp. 919-928, (2016); Samozino P., Rabita G., Dorel S., Slawinski J., Peyrot N., de Villarreal S., Morin J.-B., A simple method for measuring power, force, velocity properties, and mechanical effectiveness in sprint running, Scandinavian Journal of Medicine & Science in Sports, 26, 6, pp. 648-658, (2016); Sandford G.N., Kilding A.E., Ross A., Laursen P.B., Maximal sprint speed and the Anaerobic speed Reserve Domain: The untapped tools that differentiate the World’s best Male 800 m runners, Sports Medicine, 49, 6, pp. 843-852, (2019); Sarmento H., Marcelino R., Anguera M.T., CampaniCo J., Matos N., LeitAo J.C., Match analysis in football: A systematic review, Journal of Sports Sciences, 32, 20, pp. 1831-1843, (2014); Thompson A., Bezodis I.N., Jones R.L., An in-depth assessment of expert sprint coaches’ technical knowledge, Journal of Sports Sciences, 27, 8, pp. 855-861, (2009); Vigne G., Gaudino C., Rogowski I., Alloatti G., Hautier C., Activity profile in elite Italian soccer team, International Journal of Sports Medicine, 31, 5, pp. 304-310, (2010)","Q. Zhang; Univ. Lyon, UCBL-Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité, Villeurbanne, 7424, F-69622, France; email: zhang.qingshan@hotmail.com","","Taylor and Francis Ltd.","17461391","","","33331801","English","Eur. J. Sport Sci.","Article","Final","","Scopus","2-s2.0-85100599141" "Hawrylak A.; Brzeźna A.; Chromik K.","Hawrylak, Arletta (14519424000); Brzeźna, Anna (57222869521); Chromik, Krystyna (23023903900)","14519424000; 57222869521; 23023903900","Distribution of plantar pressure in soccer players","2021","International Journal of Environmental Research and Public Health","18","8","4173","","","","7","10.3390/ijerph18084173","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104122615&doi=10.3390%2fijerph18084173&partnerID=40&md5=0cfba4f7f5a281341eb6df9567531093","Department of Physiotherapy, University School of Physical Education, al. Ignacego Jana Paderewskiego 35, Wrocław, 51-612, Poland; Physiotherapist, Private Practice, 2 rue Jacques Rodallec, Gourin, 56110, France","Hawrylak A., Department of Physiotherapy, University School of Physical Education, al. Ignacego Jana Paderewskiego 35, Wrocław, 51-612, Poland; Brzeźna A., Physiotherapist, Private Practice, 2 rue Jacques Rodallec, Gourin, 56110, France; Chromik K., Department of Physiotherapy, University School of Physical Education, al. Ignacego Jana Paderewskiego 35, Wrocław, 51-612, Poland","(1) Background: The aim of this study was to evaluate differences in the static and dynamic distribution of foot pressure on the ground and to investigate the relationships between body mass index (BMI) and mean variables of plantar pressure between soccer players and their non-athlete peers. (2) Methods: The study involved 18 first-division Polish soccer players and 30 non-athlete physiotherapy students. The research experiment was conducted using the FreeMed platform. Basic descriptive statistics were calculated to summarize the variables. Additionally, in the static and dynamic tests, Spearman’s rank correlations between body mass index (BMI) and plantar load were calculated. (3) Results: Statistically significant differences between groups were observed in the loading of the dominant limb. A statistically significant correlation between BMI and loading of both limbs was found in the static test and between BMI and loading of the dominant limb in the dynamic test. (4) Conclusions: The baropodometric mat used in our study helped determine the plantar pressure distribution of soccer players and their non-athlete peers. Correlation analysis revealed that BMI was only associated with the mean plantar pressure of the dominant limb in the control group. Further research on a larger group of athletes is needed to determine how much sporting activity may affect the development to modifications within feet in soccer players. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.","Baropodometry; Biomechanics; Men; Soccer; Training","Athletes; Foot; Humans; Pressure; Soccer; Sports; body mass; gender relations; mens health; physical activity; sport; student; weight; article; biomechanics; body mass; clinical article; controlled study; correlation analysis; human; physical therapy student; plantar pressure; soccer player; athlete; foot; pressure; soccer; sport","Maffulli N., Longo U.G., Spiezia F., Denaro V., Aetiology and prevention of injuries in elite young athletes, Elite Young Athl, 56, pp. 187-200, (2011); Steinacker T., Steuer M., Holtke V., Injuries and overload-damages at players of the German lady-soccer-national-team, Sportver-letz. Sportschaden Organ Der Ges. Fur Orthop. Traumatol. Sportmed, 19, pp. 33-36, (2005); Wong P.-l., Chamari K., Wisloff U., Hong Y., Higher plantar pressure on the medial side in four soccer-related movements, Br. J. Sports Med, 41, pp. 93-100, (2007); Eils E., Streyl M., Linnenbecker S., Thorwesten L., Volker K., Rosenbaum D., Characteristic plantar pressure distribution patterns during soccer-specific movements, Am. J. Sports Med, 32, pp. 140-145, (2004); Bastos F.N., Vanderlei F.M., Vanderlei L.C.M., Junior J.N., Pastre C.M., Investigation of characteristics and risk factors of sports injuries in young soccer players: A retrospective study, Int. Arch. Med, 6, pp. 1-6, (2013); Chomiak J., Junge A., Peterson L., Dvorak J., Severe injuries in football players, Am. J. Sports Med, (2016); Bruttini F., Bonetti A., Dragoni S., Gianfelici A., Ethical principles in sports medicine research and motor sciences, Med. Dello Sport, 72, pp. 474-476, (2019); Hawrylak A., Chromik K., Ratajczak B., Barczyk-Pawelec K., Demczuk-Wlodarczyk E., Spinal range of motion and plantar pressure in sport climbers, Acta Bioeng. Biomech, 19, pp. 169-173, (2017); Hawrylak A., Gronowska H., Plantar Pressure Distribution in Female Olympic-Style Weightlifters, Int. J. Environ. Res. Public Health, 17, (2020); Tichy J., Belacek J., Laterality in children: Cerebellar dominance, handedness, footedness and hair whorl, Act. Nerv. Super. Rediviva, 51, pp. 9-20, (2009); Puszczalowska-Lizis E., Zwiazki wyskiepienia podłużnego z architektura poprzeczna i przednia strefa podparcia stopy u młodzieży akademickiej/Correlations between the longitudinal and the transverse arch and the front support area of the foot in students numer, Physiotherapy, 19, pp. 3-8, (2011); Grabara M., Influence of football training on alignment of the lower limbs and shaping of the feet, Hum. Mov, 9, pp. 46-50, (2008); Baron J., Bieniec A., Swinarew A.S., Gabrys T., Stanula A., Effect of 12-week functional training intervention on the speed of young footballers, Int. J. Environ. Res. Public Health, 17, (2020); Fiorilli G., Iuliano E., Mitrotasios M., Pistone E.M., Aquino G., Calcagno G., di Cagno A., Are change of direction speed and reactive agility useful for determining the optimal field position for young soccer players?, J. Sports Sci. Med, 16, (2017); Carl H.-D., Pauser J., Bernd Swoboda P., Jendrissek A., Brem M., Soccer boots elevate plantar pressures in elite male soccer professionals, Clin. J. Sport Med, 24, pp. 58-61, (2014); Woods C., Hawkins R., Hulse M., Hodson A., The Football Association Medical Research Programme: An audit of injuries in professional football: An analysis of ankle sprains, Br. J. Sports Med, 37, pp. 233-238, (2003); Puszczalowska-Lizis E., Lizis P., Szurmik T., Analiza zależności pomiędzy budowa ciała a parametrami przedniej strefy podparcia stopy z zastosowaniem różnych metod statystycznych, Young Sport Sci. Ukr, 3, pp. 163-170, (2012); Hills A., Hennig E., McDonald M., Bar-Or O., Plantar pressure differences between obese and non-obese adults: A biomechanical analysis, Int. J. Obes, 25, pp. 1674-1679, (2001); Tsung B.Y.S., Zhang M., Fan Y.B., Boone D.A., Quantitative comparison of plantar foot shapes under different weight-bearing conditions, J. Rehabil. Res. Dev, 40, pp. 517-526, (2003); da Rocha E.S., Bratz D.T.K., Gubert L.C., de David A., Carpes F.P., Obese children experience higher plantar pressure and lower foot sensitivity than non-obese, Clin. Biomech, 29, pp. 822-827, (2014); Kaplan T.A., Digel S.L., Scavo V.A., Arellana S.B., Effect of obesity on injury risk in high school football players, Clin. J. Sport Med. Off. J. Can. Acad. Sport Med, 5, pp. 43-47, (1995); Clark K.N., Balance and strength training for obese individuals, Acsm’s Health Fit. J, 8, pp. 14-20, (2004); Chaudhry S., Egol K.A., Ankle injuries and fractures in the obese patient, Orthop. Clin. N. Am, 42, pp. 45-53, (2011); Campa F., Piras A., Raffi M., Toselli S., Functional movement patterns and body composition of high-level volleyball, soccer, and rugby players, J. Sport Rehabil, 28, pp. 740-745, (2019); Kiesel K., Plisky P., Butler R., Functional movement test scores improve following a standardized off-season intervention program in professional football players, Scand. J. Med. Sci. Sports, 21, pp. 287-292, (2011); Lago-Penas C., Lago-Ballesteros J., Dellal A., Gomez M., Game-related statistics that discriminated winning, drawing and losing teams from the Spanish soccer league, J. Sports Sci. Med, 9, (2010); Gimenez J.V., Castellano J., Lipinska P., Zasada M., Gomez M.-A., Comparison of the Physical Demands of Friendly Matches and Different Types On-Field Integrated Training Sessions in Professional Soccer Players, Int. J. Environ. Res. Public Health, 17, (2020); Murphy D., Connolly D., Beynnon B., Risk factors for lower extremity injury: A review of the literature, Br. J. Sports Med, 37, pp. 13-29, (2003); Wong P., Hong Y., Soccer injury in the lower extremities, Br. J. Sports Med, 39, pp. 473-482, (2005)","A. Hawrylak; Department of Physiotherapy, University School of Physical Education, Wrocław, al. Ignacego Jana Paderewskiego 35, 51-612, Poland; email: arletta.hawrylak@awf.wroc.pl","","MDPI AG","16617827","","","33920849","English","Int. J. Environ. Res. Public Health","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85104122615" "Watanabe K.; Nunome H.; Inoue K.; Iga T.; Akima H.","Watanabe, Kohei (55615714600); Nunome, Hiroyuki (6507093692); Inoue, Koichiro (55964055200); Iga, Takahiro (55707999300); Akima, Hiroshi (56014609400)","55615714600; 6507093692; 55964055200; 55707999300; 56014609400","Electromyographic analysis of hip adductor muscles in soccer instep and side-foot kicking","2020","Sports Biomechanics","19","3","","295","306","11","10","10.1080/14763141.2018.1499800","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85051941924&doi=10.1080%2f14763141.2018.1499800&partnerID=40&md5=c8d62f8c63c44ae979e207847a0d3f44","School of International Liberal Studies, Chukyo University, Nagoya, Japan; Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan; Faculty of Education, Art and Science, Yamagata University, Yamagata, Japan; Research Centre of Health, Physical Fitness and Sports, Nagoya Univeristy, Nagoya, Japan","Watanabe K., School of International Liberal Studies, Chukyo University, Nagoya, Japan; Nunome H., Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan; Inoue K., Faculty of Education, Art and Science, Yamagata University, Yamagata, Japan; Iga T., Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan; Akima H., Research Centre of Health, Physical Fitness and Sports, Nagoya Univeristy, Nagoya, Japan","A possible link between soccer-specific injuries, such as groin pain and the action of hip adductor muscles has been suggested. This study aimed to investigate neuromuscular activation of the adductor magnus (AM) and longus (AL) muscles during instep and side-foot soccer kicks. Eight university soccer players performed the two types of kick at 50%, 75% and 100% of the maximal ball speed. Surface electromyography (EMG) was recorded from the AM, AL, vastus lateralis (VL) and biceps femoris (BF) muscles of both kicking and supporting legs and the kicking motions were three-dimensionally captured. In the kicking leg, an increase in surface EMG with an increase in ball speed during instep kicking was noted in the AM muscle (p < 0.016), but not in AL, VL or BF muscles (p > 0.016). In the supporting leg, surface EMG of both AM and AL muscles was significantly increased with an increase in the ball speed before ball impact during both instep and side-foot kicks (p < 0.016). These results suggest that hip adductor muscles markedly contribute to either the kicking or supporting leg to emphasise the action of soccer kicks. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.","adductor longus; adductor magnus; football; groin pain; Surface electromyography","Biomechanical Phenomena; Electromyography; Groin; Hip; Humans; Leg; Male; Motor Skills; Muscle, Skeletal; Pain; Soccer; Time and Motion Studies; Young Adult; biomechanics; electromyography; hip; human; inguinal region; injury; leg; male; motor performance; pain; pathophysiology; physiology; skeletal muscle; soccer; task performance; young adult","Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, Journal of Sports Sciences, 24, pp. 951-960, (2006); Brophy R.H., Backus S.I., Pansy B.S., Lyman S., Williams R.J., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, Journal of Orthopaedic and Sports Physical Therapy, 37, pp. 260-268, (2007); Charnock B.L., Lewis C.L., Garrett W.E., Queen R.M., Adductor longus mechanics during the maximal effort soccer kick, Sports Biomechanics, 8, pp. 223-234, (2009); Crow J.F., Pearce A.J., Veale J.P., Vanderwesthuizen D., Coburn P.T., Pizzari T., Hip adductor muscle strength is reduced preceding and during the onset of groin pain in elite junior Australian football players, Journal of Science and Medicine in Sport, 13, 202–204, (2010); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Aagaard H., Dyhre-Poulsen P., Klausen K., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scandinavian Journal of Medicine and Science in Sports, 9, pp. 195-200, (1999); Dorge H.C., Anderson T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, pp. 293-299, (2002); Ekstrand J., Gillquist J., Soccer injuries and their mechanisms: A prospective study, Medicine and Science in Sports and Exercise, 15, pp. 267-270, (1983); Engstrom B., Forssblad M., Johansson C., Tornkvist H., Does a major knee injury definitely sideline an elite soccer player?, American Journal of Sports Medicine, 18, pp. 101-105, (1990); Farina D., Merletti R., Nazzaro M., Caruso I., Effect of joint angle on EMG variables in leg and thigh muscles, IEEE Engineering in Medicine and Biology Magazine, 20, pp. 62-71, (2001); Haroy J., Clarsen B., Thorborg K., Holmich P., Bahr R., Andersen T.E., Groin problems in male soccer players are more common than previously reported, American Journal of Sports Medicine, 45, pp. 1304-1308, (2017); Hermens H., Freriks B., Merletti R., Stegeman D., Rau G., Hagg G., European recommendations for surface electromyography, (1999); Inoue K., Nunome H., Sterzing T., Shinkai H., Ikegami Y., Dynamics of the support leg in soccer instep kicking, Journal of Sports Sciences, 32, pp. 1023-1032, (2014); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Science & Medicine, 6, pp. 154-165, (2007); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Medicine and Science in Sports and Exercise, 36, pp. 1017-1028, (2004); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, pp. 805-817, (2010); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (1998); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, pp. 917-927, (1998); Martens M.A., Hansen L., Mulier J.C., Adductor tendinitis and musculus rectus abdominis tendopathy, American Journal of Sports Medicine, 15, pp. 353-356, (1987); Nielsen A.B., Yde J., Epidemiology and traumatology of injuries in soccer, American Journal of Sports Medicine, 17, pp. 803-807, (1989); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, pp. 2028-2036, (2002); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 24, pp. 529-541, (2006); Pressel T., Lengsfeld M., Functions of hip joint muscles, Medical Engineering and Physics, 20, pp. 50-56, (1998); Renstrom P., Peterson L., Groin injuries in athletes, British Journal of Sports Medicine, 14, pp. 30-36, (1980); Roberts E.M., Zernicke R.F., Youm Y., Huang T.C., Kinetic parameters of kicking, Biomechanics IV, pp. 157-162, (1974); Robinson P., Barron D.A., Parsons W., Grainger A.J., Schilders E.M., O'Connor P.J., Adductor-related groin pain in athletes: Correlation of MR imaging with clinical findings, Skeletal Radiology, 33, pp. 451-457, (2004); Schilders E., Bismil Q., Robinson P., O'Connor P.J., Gibbon W.W., Talbot J.C., Adductor-related groin pain in competitive athletes. Role of adductor enthesis, magnetic resonance imaging, and entheseal pubic cleft injections, Journal of Bone and Joint Surgery, 89, pp. 2173-2178, (2007); Vincent W.J., Statistics in kinesiology, (2005); Watanabe K., Katayama K., Ishida K., Akima H., Electromyographic analysis of hip adductor muscles during incremental fatiguing pedaling exercise, European Journal of Applied Physiology, 106, pp. 815-825, (2009); Watanabe K., Sato T., Mukaimoto T., Takashima W., Yamagishi M., Nishiyama T., Electromyographic analysis of thigh muscles during track cycling on a velodrome, Journal of Sports Sciences, 34, pp. 1413-1422, (2016); Zernicke R.F., Roberts E.M., Lower extremity forces and torques during systematic variation of non-weight bearing motion, Medicine and Science in Sports, 10, pp. 21-26, (1978)","K. Watanabe; School of International Liberal Studies, Chukyo University, Nagoya, Japan; email: wkohei@lets.chukyo-u.ac.jp","","Routledge","14763141","","","30102108","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-85051941924" "Smith T.; Gilleard W.","Smith, Tina (56315920700); Gilleard, Wendy (6603049713)","56315920700; 6603049713","Three-dimensional analysis of a lofted instep kick by male and female footballers","2016","European Journal of Sport Science","16","1","","57","64","7","10","10.1080/17461391.2014.992477","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84953639701&doi=10.1080%2f17461391.2014.992477&partnerID=40&md5=e6504cd35efab4565dc3ae35e22a99a0","School of Health and Human Sciences, Southern Cross University, Lismore, NSW, Australia","Smith T., School of Health and Human Sciences, Southern Cross University, Lismore, NSW, Australia; Gilleard W., School of Health and Human Sciences, Southern Cross University, Lismore, NSW, Australia","There is a paucity of data describing the lofted instep kick and little information on the kinematic differences between male and female footballers. This study provides a preliminary investigation into the differences in motion patterns between the sexes. A four-camera motion analysis system videoed 13 amateur footballers (7 female and 6 male) attempting a standardised task that represented a lofted instep kick of approximately 35 m. Footballers performed 20 kicks, with the three trials categorised closest to the standardised distance retained for statistical analysis. Three-dimensional motion patterns for kicks of 35 m illustrated that female footballers produced greater fluctuation in movement patterns for pelvic, hip joint and thoracolumbar spine motion in the frontal plane; thorax and hip joint transverse rotation; and ankle dorsiflexion/plantarflexion motion. Peak hip extension (P = 0.018), impact hip abduction (P = 0.032), impact ankle plantar flexion (P = 0.030) and resultant ball velocity (P = 0.004) differed significantly between sexes. Principle component analysis highlighted associations between kinematic variables related to ball velocity and sex including a reduced hip abduction and increased internal rotation approaching impact, and greater peak knee flexion, respectively. In summary, increased variation in direction of segment motion, increased backswing and formation of a tension arc by females compared to males, may be related to anthropometric, strength and muscle activation differences. Specifically, this exploratory study indicates future research would benefit from exploring trunk, pelvis and hip kinematics and kinetics, and whether training the trunk, pelvis and hip musculature assists female footballers. © 2015 European College of Sport Science.","football; Hip; kinematics; soccer; thoracolumbar spine","Adolescent; Adult; Athletic Performance; Biomechanical Phenomena; Female; Foot; Hip; Humans; Male; Soccer; Young Adult; adolescent; adult; athletic performance; biomechanics; female; foot; hip; human; male; physiology; soccer; young adult","Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, Journal of Sports Science and Medicine, 1, pp. 72-79, (2002); Bishop D., An applied research model for the sport sciences, Sports Medicine, 38, pp. 253-263, (2008); Brophy R.H., Backus S., Kraszewski A.P., Steele B.C., Ma Y., Osei D., Williams R.J., Differences between sexes in lower extremity alignment and muscle activation during soccer kicking, The Journal of Bone and Joint Surgery, 92, pp. 2050-2058, (2010); Brophy R.H., Chiaia T.A., Maschi R., Dodson C.C., Oh L.S., Lyman S., Williams R.J., Et al., The core and hip in soccer athletes compared by gender, International Journal of Sports Medicine, 30, pp. 663-667, (2009); Browder K.D., Tant C.L., Wilkerson J.D., A three-dimensional kinematic analysis of three kicking techniques in female soccer players, Biomechanics in sports IX: Proceedings of the 9th International Symposium on Biomechanics in Sports, pp. 95-100, (1991); Bull Anderson T., Dorge H.C., Thomsen F.I., Collisions in soccer kicking, Sports Engineering, 2, pp. 121-125, (1999); Faul F., Erdfelder E., Lang A.-G., Buchner A., G*Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences, Behavior Research Methods, 39, pp. 175-191, (2007); Laws of the game 2012/2013, (2012); Gilleard W., Crosbie J., Smith R., Effect of pregnancy on trunk range of motion when sitting and standing, Acta Obstetricia et Gynecologica Scandinavica, 81, pp. 1011-1020, (2002); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, Journal of Biomechanical Engineering, 105, pp. 136-144, (1983); Hargreaves A., Skills and strategies for coaching soccer, (1990); Hughes C., The Football Association coaching book of soccer tactics and skills, (1994); Jackson K.M., Fitting of mathematical functions to biomechanical data, IEEE Transactions on Biomedical Engineering, 26, pp. 122-124, (1979); Jan M., Chai H., Lin Y., Lin J., Tsai L., Ou Y., Lin D., Effects of age and sex on the results of an ankle plantar-flexor manual muscle test, Physical Therapy, 85, pp. 1078-1084, (2005); Johnson M.D., Buckley J.G., Muscle power patterns in the mid-acceleration phase of sprinting, Journal of Sports Sciences, 19, pp. 263-272, (2001); Lees A., Asai T., Andersen B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, pp. 805-817, (2010); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (1998); Lees A., Nolan L., Three-dimensional kinematic analysis of the instep kick under speed and accuracy conditions, Science and football IV, pp. 16-21, (2002); Lees A., Rahnama N., Variability and typical error in the kinematics and kinetics of the maximal instep kick in soccer, Sports Biomechanics, 12, pp. 283-292, (2013); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine & Science in Sports & Exercise, 30, pp. 917-927, (1998); Lloyd D.G., Alderson J., Elliott B.C., An upper limb kinematic model for the examination of cricket bowling: A case study of Mutiah Muralitharan, Journal of Sports Sciences, 18, pp. 975-982, (2000); Manolopoulos E., Papadopoulos C., Kellis E., Effects of combined strength and kick coordination training on soccer kick biomechanics in amateur players, Scandinavian Journal of Medicine and Science in Sports, 16, pp. 102-110, (2006); Muewssen H., Tant C.L., Kinematic analysis of a three-dimensional soccer instep kick (abstract, Journal of Sports Sciences, 10, (1992); Norton K., Olds T., Anthropometrica: A text book of body measurement for sports and health courses, (1996); Orloff H., Sumida B., Chow J., Habibi L., Fujino A., Kramer B., Ground reaction forces and kinematics of plant leg position during instep kicking in male and female collegiate soccer players, Sports Biomechanics, 7, pp. 238-247, (2008); Rey J., Plapp J., Stewart G., Richards I., Bashir M., Reliability of the psychosocial axes of DSM-III in an adolescent population, British Journal of Psychiatry, 150, pp. 228-234, (1987); Scott D., Analysis of all goals scored during the 1999 women's world cup finals, Insight, 3, 1, pp. 52-54, (1999); Shan G., Influence of gender and experience on the maximal instep kick, European Journal of Sport Science, 9, pp. 107-114, (2009); Shan G., Daniels D., Wang C., Wutzke C., Lemire G., Biomechanical analysis of maximal instep kick by female soccer players, Journal of Human Movement Studies, 49, pp. 149-168, (2005); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomechanics, 4, pp. 59-72, (2005); Shrout P.E., Fleiss J.L., Intraclass correlations: Uses in assessing rater reliability, Psychological Bulletin, 86, pp. 420-428, (1979); Vander Linden D.W., Carlson S.J., Hubbard R.L., Reproducibility and accuracy of angle measurements obtained under static conditions with the motion analysis video system, Physical Therapy, 72, pp. 300-305, (1992); Wilson D.J., Smith B.K., Gibson J.K., Choe B.K., Gaba B.C., Voelz J.T., Accuracy of digitization using automated and manual methods, Physical Therapy, 79, pp. 558-566, (1999)","T. Smith; Institute of Sport, University of Wolverhampton, Walsall, Gorway Road, WS1 3BD, United Kingdom; email: Tina.Smith@wlv.ac.uk","","Taylor and Francis Ltd.","17461391","","","25562661","English","Eur. J. Sport Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84953639701" "Snyder B.J.; Hutchison R.E.; Mills C.J.; Parsons S.J.","Snyder, Benjamin J. (59096688800); Hutchison, Randolph E. (36713434400); Mills, Christopher J. (57259266800); Parsons, Stephen J. (57258785300)","59096688800; 36713434400; 57259266800; 57258785300","Effects of two competitive soccer matches on landing biomechanics in female division i soccer players","2019","Sports","7","11","237","","","","11","10.3390/sports7110237","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102330546&doi=10.3390%2fsports7110237&partnerID=40&md5=6a1e34388a7ec80a5b59e32adeea35f5","Department of Health Sciences, Furman University, Greenville, 29613, SC, United States","Snyder B.J., Department of Health Sciences, Furman University, Greenville, 29613, SC, United States; Hutchison R.E., Department of Health Sciences, Furman University, Greenville, 29613, SC, United States; Mills C.J., Department of Health Sciences, Furman University, Greenville, 29613, SC, United States; Parsons S.J., Department of Health Sciences, Furman University, Greenville, 29613, SC, United States","Fatigue has been proposed to increase the risk of knee injury. This study tracked countermovement jump, knee isometric strength, and kinetics and kinematics in 8 female soccer players (experimental group) during an anticipated sidestep maneuver before and after two matches played over a 43-h period. Time points were: Before and after match 1 (T0 and T1), 12 h after the first match (T2), and immediately after the second match (T3). A control group participated only in practice sessions. Isometric knee extension strength decreased by 14.8% at T2 (p = 0.003), but knee flexion was not affected until T3, declining by 12.6% (p = 0.018). During the sidestep maneuver, knee joint degrees of flexion at initial contact was increased by 17.1% at T3, but maximum knee and hip angle at initial contact were unchanged. Peak resultant ground reaction force (GRF) increased by 12.6% (p = 0.047) at T3 (3.03 xBW) from 2.69 xBW at T0, while posterior GRF was significantly higher than T0 at all three subsequent time points (T1 = 0.82 ± 0.23 xBW, T2 = 0.87 ± 0.22 xBW, T3 = 0.89 ± 0.22 xBW). Anterior tibial shear force increased significantly (p = 0.020) at T3 (1.24 ± 0.12 xBW) compared to T1 (1.15 ± 0.13 xBW), an 8.8% increase. Lateral tibial shear force was significantly higher at both T1 (0.95 ± 0.20 xBW) and T3 (1.15 ± 0.38 xBW) compared to T0 (0.67 ± 0.25 xBW). These findings suggest that participation in a soccer match has significant effects on both physical performance parameters and kinetics/kinematics during a sidestep cut, but these can be more pronounced after a second match with short rest. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.","Anterior cruciate ligament; Anterior tibial shear; Fixture congestion; Football; Ground reaction force; Kinematics; Kinetics; Sidestep cut","","Roos E.M., Joint injury causes knee osteoarthritis in young adults, Curr. Opin. Rheumatol, 17, pp. 195-200, (2005); Hootman J.M., Anterior Cruciate Ligament Injury Prevention and Primary Prevention of Knee Osteoarthritis, J. Athl. Train, 5, pp. 589-590, (2012); Arendt E.A., Agel J., Dick R., Anterior cruciate ligament injury patterns among collegiate men and women, J. Athl. Train, 34, pp. 86-92, (1999); Gwinn D.E., Wilckens J.H., McDevitt E.R., Ross G., Kao T.C., The relative incidence of anterior cruciate ligament injury in men and women at the United States Naval Academy, Am. J. Sport Med, 28, pp. 98-102, (2000); Kiapour A.M., Quatman C.E., Goel V.K., Wordeman S.C., Hewett T.E., Demetropoulos C.K., Timing sequence of multi-planar knee kinematics revealed by physiologic cadaveric simulation of landing: Implications for ACL injury mechanism, Clin. Biomech, 29, pp. 75-82, (2014); Chappell J., Herman D.C., Knight B.S., Kirkendall D.T., Garrett W.E., Yu B., Effect of Fatigue on Knee Kinetics and Kinematics in Stop-Jump Tasks, Am. J. Sport Med, 33, pp. 1022-1029, (2005); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Silva J., Rumpf M., Hertzog M., Castagna C., Farooq A., Girard O., Hader K., Acute and Residual Soccer Match-Related Fatigue: A Systematic Review and Meta-analysis, Sports Med, 48, pp. 539-583, (2018); Nedelec M., McCall A., Carling C., Legall F., Berthoin S., Dupont G., Recovery in soccer: Part I—Post-match fatigue and time course of recovery, Sports Med, 42, pp. 997-1015, (2012); Barber-Westin S.D., Noyes F.R., Effect of Fatigue Protocols on Lower Limb Neuromuscular Function and Implications for Anterior Cruciate Ligament Injury Prevention Training: A Systematic Review, Am. J. Sport Med, 45, pp. 3388-3396, (2017); Bourne M.N., Webster K.E., Hewett T.E., Is Fatigue a Risk Factor for Anterior Cruciate Ligament Rupture?, Sports Med, 49, pp. 1-7, (2019); Benjaminse A., Webster K., Kimp A., Meijer M., Gokeler A., Revised Approach to the Role of Fatigue in Anterior Cruciate Ligament Injury Prevention: A Systematic Review with Meta-Analyses, Sports Med, 49, pp. 565-586, (2019); Carling C., Le Gall F., Dupont G., Are Physical Performance and Injury Risk in a Professional Soccer Team in Match-Play Affected Over a Prolonged Period of Fixture Congestion?, Int. J. Sports Med, 33, pp. 36-42, (2012); Dellal A., Lago-Penas C., Rey E., Chamari K., Orhant E., The effects of a congested fixture period on physical performance, technical activity and injury rate during matches in a professional soccer team, Br. J. Sport Med, 49, pp. 390-394, (2015); Dupont G., Nedelec M., McCall A., McCormack D., Berthoin S., Wisloff U., Effect of 2 Soccer Matches in a Week on Physical Performance and Injury Rate, Am. J. Sport Med, 38, pp. 1752-1758, (2010); Jones R.N., Greig M., Mawene Y., Barrow J., Page R.M., The influence of short-term fixture congestion on position specific match running performance and external loading patterns in English professional soccer, J. Sports Sci, 37, pp. 1338-1346, (2019); Lago-Penas C., Rey E., Lago-Ballesteros J., Casais L., Dominguez E., The Influence of a Congested Calendar on Physical Performance in Elite Soccer, J. Strength Cond. Res, 25, pp. 2111-2117, (2011); Poulios A., Fatouros I.G., Mohr M., Draganidis D.K., Deli C., Papanikolaou K., Sovatzidis A., Nakopoulou T., Ermidis G., Tzatzakis T., Et al., Post-Game High Protein Intake May Improve Recovery of Football-Specific Performance during a Congested Game Fixture: Results from the PRO-FOOTBALL Study, Nutrients, 10, (2018); Bakker R., Tomescu S., Brenneman E., Hangalur G., Laing A., Chandrashekar N., Effect of sagittal plane mechanics on ACL strain during jump landing, J. Orthop. Res, 34, pp. 1636-1644, (2016); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., van den Bogert A.J., Paterno M.V., Succop P., Biomechanical Measures of Neuromuscular Control and Valgus Loading of the Knee Predict Anterior Cruciate Ligament Injury Risk in Female Athletes: A Prospective Study, Am. J. Sport Med, 33, pp. 492-501, (2005); McLean S.G., Oh Y.K., Palmer M.L., Lucey S.M., Lucarelli D.G., Ashton-Miller J.A., Wojtys E.M., The Relationship Between Anterior Tibial Acceleration, Tibial Slope, and ACL Strain During a Simulated Jump Landing Task, J. Bone Jt. Surg, 93, (2011); Demorat G., Weinhold P., Blackburn T., Chudik S., Garrett W., Aggressive Quadriceps Loading Can Induce Noncontact Anterior Cruciate Ligament Injury, Am. J. Sport Med, 32, pp. 477-483, (2004); Margaria R., Aghemo P., Rovelli E., Measurement of muscular power (anaerobic) in man, J. Appl. Physiol, 21, pp. 1662-1664, (1966); Wu G., Siegler S., Allard P., Kirtley C., Leardini A., Rosenbaum D., Whittle M., D'Lima D.D., Cristofolini L., Witte H., Et al., ISB recommendation on definitions of joint coordinate system of various joints for the reporting of human joint motion—Part I: Ankle, hip, and spine, J. Biomech, 35, pp. 543-548, (2002); Baker R., ISB recommendation on definition of joint coordinate systems for the reporting of human joint motion—Part I: Ankle, hip and spine, J. Biomech, 2, pp. 300-302, (2003); Robertson G., Research Methods in Biomechanics, (2013); Sanna G., O'Connor K.M., Fatigue-related changes in stance leg mechanics during sidestep cutting maneuvers, Clin. Biomech, 23, pp. 946-954, (2008); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (2009); Lucci S., Cortes N., Van Lunen B., Ringleb S., Onate J., Knee and hip sagittal and transverse plane changes after two fatigue protocols, J. Sci. Med. Sport, 14, pp. 453-459, (2011); Butler D., Grood E.S., Noyes F., Ligamentous restraints to anterior drawer in the human knee: A biomechanical study, J. Bone Jt. 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Train, 48, pp. 306-313, (2013); Zebis M.K., Bencke J., Andersen L.L., Alkjaer T., Suetta C., Mortensen P., Kjaer M., Aagaard P., Acute fatigue impairs neuromuscular activity of anterior cruciate ligament-agonist muscles in female team handball players, Scand. J. Med. Sci. Sports, 21, pp. 833-840, (2011); Cortes N., Greska E., Ambegaonkar J., Kollock R., Caswell S., Onate J., Knee kinematics is altered post-fatigue while performing a crossover task, Knee Surg. Sports Traumatol. Arthrosc, 22, pp. 2202-2208, (2014); Kernozek T.W., Torry M.R., Iwasaki M., Gender differences in lower extremity landing mechanics caused by neuromuscular fatigue, Am. J. Sport Med, 36, pp. 554-565, (2008); Pandy M.G., Shelburne K.B., Dependence of cruciate-ligament loading on muscle forces and external load, J. Biomech, 30, pp. 1015-1024, (1997); Tsai L., Ko Y., Hammond K.E., Xerogeanes J.W., Warren G.L., Powers C.M., Increasing hip and knee flexion during a drop-jump task reduces tibiofemoral shear and compressive forces: Implications for ACL injury prevention training, J. Sport Sci, 35, pp. 2405-2411, (2017); Nedelec M., McCall A., Carling C., Legall F., Berthoin S., Dupont G., The Influence of Soccer Playing Actions on the Recovery Kinetics After a Soccer Match, J. Strength Cond. Res, 28, pp. 1517-1523, (2014)","B.J. Snyder; Department of Health Sciences, Furman University, Greenville, 29613, United States; email: ben.snyder@furman.edu","","MDPI","20754663","","","","English","Sports","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85102330546" "Kunugi S.; Koumura T.; Myotsuzono R.; Masunari A.; Yoshida N.; Miyakawa S.; Mukai N.","Kunugi, Shun (57125778100); Koumura, Takashi (57203856093); Myotsuzono, Ryota (57217166647); Masunari, Akihiko (56262106000); Yoshida, Naruto (57125387000); Miyakawa, Shumpei (15769772200); Mukai, Naoki (7005409455)","57125778100; 57203856093; 57217166647; 56262106000; 57125387000; 15769772200; 7005409455","Directions of single-leg landing affect multi-segment foot kinematics and dynamic postural stability in male collegiate soccer athletes","2020","Gait and Posture","80","","","285","291","6","8","10.1016/j.gaitpost.2020.06.007","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086591612&doi=10.1016%2fj.gaitpost.2020.06.007&partnerID=40&md5=cb15ca44aa43aab88ad17fae283eed61","Faculty of Health and Sport Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Ibaraki, Japan; Doctoral Program in Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan; Faculty of Sports Science Kyushu Kyoritsu University, 1-8 Jiyugaoka, Kitakyushu Yahatanishi-ku, Fukuoka, 807-8585, Japan; Kagoshima United Football Club, 39-11 Kamoikeshinmachi, Kagoshima, Kagoshima, 890-0064, Japan; Faculty of Health Care, Department of Acupuncture and Moxibusion Teikyo Heisei University, 2-51-4 Higashi-ikebukuro, Toshima-ku, Tokyo, 170-8445, Japan; Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan; Faculty of Health and Sport Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan","Kunugi S., Faculty of Health and Sport Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Ibaraki, Japan; Koumura T., Doctoral Program in Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan; Myotsuzono R., Faculty of Sports Science Kyushu Kyoritsu University, 1-8 Jiyugaoka, Kitakyushu Yahatanishi-ku, Fukuoka, 807-8585, Japan; Masunari A., Kagoshima United Football Club, 39-11 Kamoikeshinmachi, Kagoshima, Kagoshima, 890-0064, Japan; Yoshida N., Faculty of Health Care, Department of Acupuncture and Moxibusion Teikyo Heisei University, 2-51-4 Higashi-ikebukuro, Toshima-ku, Tokyo, 170-8445, Japan; Miyakawa S., Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan; Mukai N., Faculty of Health and Sport Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan","Background: Understanding lower limb kinematics and postural control in different directions of single-leg landings is critical to evaluate postural control and prevent lower limb injuries. However, foot and ankle kinematics and postural control during single-leg landings in different directions are less known. Research question: Does the difference in the direction of single-leg landing affect the foot kinematics on the frontal plane and dynamic postural stability? Methods: A cross-sectional study was conducted. Forty-nine male collegiate soccer players performed single-leg forward (FL), 45° lateral (LL), and medial (ML) direction landings. The lower limb, foot (rearfoot, midfoot, forefoot), and ankle kinematics during an impact phase were evaluated, and a curve analysis was performed using a statistical parametric mapping method to compare the three landings. The three landings were compared in terms of postural control parameters, including time to stabilization (TTS), peak of ground reaction forces (GRFs), root-mean-square of the mediolateral GRFs for 0–0.4 s (GRFML0.4), loading rate, and magnitude of horizontal GRFs from 0–0.4 s (HGRF-0.4), 0.4–2.4 s (HGRF-2.4), and 3.0–5.0 s. Results: Ankle and rearfoot kinematics in LL exhibited smaller eversion and pronation positions than FL and ML (p < 0.01). The TTS-mediolateral (TTS-ML) was longer in the LL than in FL and ML (p < 0.001). The GRFML0.4, HGRF-0.4, and -2.4 in the LL and ML were greater than those in the FL (p < 0.001). Significance: Directions of single-leg landing affect foot and ankle kinematics and postural stability. Specifically, the LL exhibits more inverted ankle and supinated rearfoot positions, and longer TTS-ML. Thus, the LL may induce stretching of the lateral ankle ligament. These findings can help understand foot kinematics and assess dynamic postural control. © 2020 Elsevier B.V.","Balance; Direction landing; Drop jump landing; Multi-segment foot model; Postural stability","Adolescent; Ankle; Ankle Joint; Athletes; Biomechanical Phenomena; Cross-Sectional Studies; Foot; Humans; Male; Postural Balance; Soccer; Young Adult; adult; ankle; Article; body equilibrium; body position; comparative study; cross-sectional study; evaluation study; foot; ground reaction force; human; human experiment; kinematics; lower limb; male; priority journal; single leg landing; soccer player; statistical parameters; student athlete; young adult; adolescent; athlete; biomechanics; foot; physiology; soccer","Swenson D.M., Yard E.E., Fields S.K., Comstock R.D., Patterns of recurrent injuries among US high school athletes, 2005–2008, Am. J. 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Train., 51, pp. 5-15, (2016); Liu K., Heise G.D., The effects of jump-landing directions on dynamic stability, J. Appl. Biomech., 29, pp. 634-638, (2013); Hargrave M.D., Carcia C.R., Gansneder B.M., Shultz S.J., Subtalar pronation does not influence impact forces or rate of loading during a single-leg landing, J. Athl. Train., 38, pp. 18-23, (2003); Leardini A., Benedetti M.G., Berti L., Bettinelli D., Nativo R., Giannini S., Rear-foot, mid-foot and fore-foot motion during the stance phase of gait, Gait Posture, 25, pp. 453-462, (2007); Portinaro N., Leardini A., Panou A., Monzani V., Caravaggi P., Modifying the Rizzoli foot model to improve the diagnosis of pes-planus: application to kinematics of feet in teenagers, J. Foot Ankle Res., 7, pp. 1-7, (2014); De Ridder R., Willems T., Vanrenterghem J., Robinson M., Pataky T., Roosen P., Gait kinematics of subjects with ankle instability using a multisegmented foot model, Med. Sci. Sports Exerc., 45, pp. 2129-2136, (2013); De Ridder R., Willems T., Vanrenterghem J., Robinson M.A., Palmans T., Roosen P., Multi-segment foot landing kinematics in subjects with chronic ankle instability, Clin. Biomech. (Bristol, Avon)., 30, pp. 585-592, (2015); Fraser J.J., Hart J.M., Saliba S.F., Park J.S., Tumperi M., Hertel J., Multisegmented ankle-foot kinematics during gait initiation in ankle sprains and chronic ankle instability, Clin. Biomech. (Bristol, Avon)., 68, pp. 80-88, (2019); Fraser J.J., Feger M.A., Hertel J., Clinical commentary on midfoot and forefoot involvement in lateral ankle sprains and chronic ankle instability. Part 2: clinical considerations, Int. J. Sports Ther., 11, pp. 1191-1203, (2016); Sinsurin K., Vachalathiti R., Jalayondeja W., Limroongreungrat W., Altered peak knee valgus during jump-landing among various directions in basketball and volleyball athletes, Asian J. Sports Med., 4, pp. 195-200, (2013); Azevefo A.M., Oliveira R., Vaz J.R., Cortes N., Professional dancers distinct biomechanical pattern during multidirectional landings, Med. Sci. Sports Exerc., 51, pp. 539-547, (2019); Wikstrom E.A., Tillman M.D., Schenker S.M., Borsa P.A., Jump-landing direction influences dynamic postural stability scores, J. Sci. Med. Sport, 11, pp. 106-111, (2008); Lee J., Song Y., Shin C.S., Effect of the sagittal ankle single at initial contact on energy dissipation in the lower extremity joints during a single-leg landing, Gait Posture, 62, pp. 99-104, (2018); Kunugi S., Masunari A., Noh B., Mori T., Yoshida N., Miyakawa S., Cross-cultural adaptation, reliability, and validity of the Japanese version of the Cumberland ankle instability tool, Disabil. Rehabil., 39, pp. 50-58, (2017); Pataky T.C., Generalized n-dimensional biomechanical field analysis using statistical parametric mapping, J. Biomech., 43, pp. 1976-1982, (2010); Delahuunt E., Monaghan K., Caulfield B., Changes in lower limb kinematics, kinetics, and muscle activity in subjects with functional instability of the ankle joint during a single leg drop jump, J. Orthop. Res., 24, pp. 1991-2000, (2006); Kunugi S., Masunari A., Koumura T., Fujimoto A., Yoshida N., Miyakawa S., Altered lower limb kinematics and muscle activities in soccer players with chronic ankle instability, Phys. Ther. Sport, 34, pp. 28-35, (2018); Eechaute C., De Ridder R., Maes T., Beckwee D., Swinnen E., Buyl R., Et al., Evidence of a different landing strategy in subjects with chronic ankle instability, Gait Posture, 52, pp. 62-67, (2017); Lee S.P., Powers C.M., Individuals with diminished hip abductor muscle strength exhibit altered ankle biomechanics and neuromuscular activation during unipedal balance tasks, Gate Posture., 39, pp. 933-938, (2014)","S. Kunugi; Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, 1-1-1 Tennodai, 305-8577, Japan; email: shun-kunugi@hotmail.com","","Elsevier B.V.","09666362","","GAPOF","32570194","English","Gait Posture","Article","Final","","Scopus","2-s2.0-85086591612" "Lee M.J.C.; Lloyd D.G.; Lay B.S.; Bourke P.D.; Alderson J.A.","Lee, Marcus J.C. (56143449000); Lloyd, David G. (57202439944); Lay, Brendan S. (7003960150); Bourke, Paul D. (7004729754); Alderson, Jacqueline A. (8599127100)","56143449000; 57202439944; 7003960150; 7004729754; 8599127100","Different visual stimuli affect muscle activation at the knee during sidestepping","2019","Journal of Sports Sciences","37","10","","1123","1128","5","11","10.1080/02640414.2018.1545276","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85057259096&doi=10.1080%2f02640414.2018.1545276&partnerID=40&md5=e3ef6f3d232c78aea04802f5cfc1d3a9","School of Sport Science, Exercise & Health, The University of Western Australia, Crawley, WA, Australia; Singapore Sport Institute, Sport Singapore, Singapore; Centre for Musculoskeletal Research, Griffith Health Institute, Griffith University, QLD, Australia; Sports Performance Research Institute New Zealand (SPRINZ), Auckland University of Technology, Auckland, New Zealand","Lee M.J.C., School of Sport Science, Exercise & Health, The University of Western Australia, Crawley, WA, Australia, Singapore Sport Institute, Sport Singapore, Singapore; Lloyd D.G., School of Sport Science, Exercise & Health, The University of Western Australia, Crawley, WA, Australia, Centre for Musculoskeletal Research, Griffith Health Institute, Griffith University, QLD, Australia; Lay B.S., School of Sport Science, Exercise & Health, The University of Western Australia, Crawley, WA, Australia; Bourke P.D.; Alderson J.A., School of Sport Science, Exercise & Health, The University of Western Australia, Crawley, WA, Australia, Sports Performance Research Institute New Zealand (SPRINZ), Auckland University of Technology, Auckland, New Zealand","Increasing knee stability via appropriate muscle activation could reduce anterior cruciate ligament (ACL) injury risk during unplanned sidestepping. High-level athletes may activate their knee muscles differently from low-level athletes when responding to quasi-game realistic versus non game-realistic stimuli. Eleven high-level and 10 low-level soccer players responded to a non game-realistic arrow-planned condition (AP), a quasi game-realistic one-defender scenario (1DS) and two-defender scenario (2DS), and an arrow-unplanned condition (AUNP), that imposed increasing time constraints to sidestep. Activation from eight knee muscles during sidestepping was measured during pre-contact and weight-acceptance. Knee flexor-extensor co-activation ratios were established. Muscle activation levels increased by approximately 27% solely in the 1DS in both sidestepping phases. In the 2DS, the shift from a flexor dominant co-activation strategy in pre-contact toward extensor dominance in weight-acceptance commenced earlier for the high-level players. Quasi game-realistic information allowed for anticipatory increases in knee muscle activation regardless of expertise levels but only when the time demands to respond were low (1DS). High-level players were better at interpreting complex game-realistic information (2DS) to activate their knee extensors earlier in preparation for single-leg landing during weight-acceptance. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.","ACL; biomechanics; cutting; EMG; injury; Sidestep","Adult; Athletes; Biomechanical Phenomena; Gait; Humans; Knee; Male; Muscle, Skeletal; Soccer; Visual Perception; Weight-Bearing; Young Adult; adult; athlete; biomechanics; gait; human; knee; male; physiology; skeletal muscle; soccer; vision; weight bearing; young adult","Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting manoeuvres, Medicine and Science in Sports and Exercise, 35, 1, pp. 119-127, (2003); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., Anticipatory effects on knee joint loading during running and cutting manoeuvres, Medicine and Science in Sports and Exercise, 33, 7, pp. 1176-1181, (2001); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting manoeuvres, Medicine and Science in Sports and Exercise, 33, 7, pp. 1168-1175, (2001); Boden B.P., Dean G.S., Feagin J.A.J., Garrett W.E.J., Mechanisms of anterior cruciate ligament injury, Orthopaedics, 23, 6, pp. 573-578, (2000); Branch T., Hunter R., Donath M., Dynamic EMG analysis of anterior cruciate ligament deficient legs with and without bracing during cutting, American Journal of Sports Medicine, 17, pp. 35-41, (1989); Buchannan T.S., Kim A.W., Lloyd D.G., Selective muscle activation following rapid valgus/varus perturbations at the knee, Medicine and Science in Sports and Exercise, 28, 7, pp. 870-876, (1996); Cochrane J.L., Lloyd D.G., Buttfield A., Seward H., McGivern J., Characteristics of anterior cruciate ligament injuries in Australian football, Journal of Science and Medicine in Sport, 10, pp. 96-104, (2007); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Changing sidestep cutting technique reduces knee valgus loading, American Journal of Sports Medicine, 37, 11, pp. 2194-2200, (2009); Draganich L.F., Vahey J.W., An in-vitro study of anterior cruciate ligament strain induced by quadriceps and hamstrings forces, Journal of Orthopaedic Research, 8, 1, pp. 52-60, (1990); Hashemi J., Breighner R., Jang T.H., Chandrashekar N., Ekwaeo-Osire S., Slauterbeck J.C., Increasing pre-activation of the quadriceps muscles protects the anterior cruciate ligament during the landing phase of a jump: An in vitro simulation, Knee, 17, 3, pp. 235-241, (2010); Heiden T.L., Lloyd D.G., Ackland T.R., Knee joint kinematics, kinetics and muscle co-contraction in knee osteoarthritis patient gait, Clinical Biomechanics, 24, 10, pp. 833-841, (2009); Hewett T.E., Lindenfeld T.N., Ricobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes: A prospective study, American Journal of Sports Medicine, 27, 6, pp. 699-706, (1999); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes. A prospective study, American Journal of Sports Medicine, 33, 4, pp. 492-501, (2005); Kim S.Y., Spritzer C.E., Utturkar G.M., Toth A.P., Garrett W.E., DeFrate L.E., Knee kinematics during noncontact anterior cruciate ligament injury as determined from bone bruise location, American Journal of Sports Medicine, 43, 10, pp. 2515-2521, (2015); Konrad P., The ABC of EMG, (2005); Lee M.J.C., Bourke P., Alderson J.A., Lloyd D.G., Lay B., Stereoscopic filming for investigating evasive sidestepping and anterior cruciate ligament injury risk, Proceedings of the SPIE-IS&T Electronic Imaging Science and Technology: Stereoscopic Displays and Applications XXI, (2010); Lee M.J.C., Lloyd D.G., Lay B.S., Bourke P.D., Alderson J.A., Effects of different visual stimuli on postures and knee moments during sidestepping, Medicine and Science in Sports and Exercise, 45, 9, pp. 1740-1748, (2013); Lee M.J.C., Lloyd D.G., Lay B.S., Bourke P.D., Alderson J.A., Different visual stimuli affect body reorientation strategies during sidestepping, Scandinavian Journal of Medicine and Science in Sports, 27, 5, pp. 492-500, (2016); Lloyd D.G., Buchannan T.S., A model of load sharing between muscles and soft tissues at the human knee during static tasks, Journal of Biomechanical Engineering, 118, pp. 367-376, (1996); Lloyd D.G., Buchannan T.S., Strategies of muscular support of varus and valgus isometric loads at the human knee, Journal of Biomechanics, 34, 10, pp. 1257-1267, (2001); Lloyd D.G., Buchannan T.S., Besier T.F., Neuromuscular modelling to understand knee ligament loading, Medicine and Science in Sports and Exercise, 37, 11, pp. 1939-1947, (2005); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, Journal of Orthopaedic Research, 13, 6, pp. 930-935, (1995); McConkey J., Anterior cruciate ligament rupture in skiing, American Journal of Sports Medicine, 14, 2, pp. 160-164, (1986); McLean S.G., Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: Potential for injury in women, Medicine and Science in Sports and Exercise, 31, 7, pp. 959-968, (1999); McNair P., Marshall R., Landing characteristics in subjects with normal and anterior cruciate deficient knee joints, Archives of Physical Medicine and Rehabilitation, 75, pp. 584-589, (1994); Novacheck T.F., The biomechanics of running, Gait and Posture, 7, 1, pp. 77-95, (1998); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, American Journal of Sports Medicine, 32, 4, pp. 1002-1012, (2004); Sturnieks D.L., Besier T.F., Lloyd D.G., Muscle activations to stabilize the knee following arthroscopic partial menisectomy, Clinical Biomechanics, 26, 3, pp. 292-297, (2011); Weinhandl J.T., Earl-Boehm J.E., Ebersole K.T., Huddleston W.E., Armstrong B.S., O'Connor K.M., Anticipatory effects on anterior cruciate ligament loading during sidestep cutting, Clinical Biomechanics, 28, 6, pp. 655-663, (2013)","M.J.C. Lee; Singapore Sport Institute, Sport Singapore, Singapore, 3 Stadium Drive, 397630, Singapore; email: marcusleejc@gmail.com","","Routledge","02640414","","JSSCE","30449252","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-85057259096" "Buckthorpe M.; Pisoni D.; Tosarelli F.; Danelon F.; Grassi A.; della Villa F.","Buckthorpe, Matthew (54783962800); Pisoni, Davide (57386034400); Tosarelli, Filippo (57217386930); Danelon, Furio (54879875200); Grassi, Alberto (57205264407); della Villa, Francesco (55780654000)","54783962800; 57386034400; 57217386930; 54879875200; 57205264407; 55780654000","Three Main Mechanisms Characterize Medial Collateral Ligament Injuries in Professional Male Soccer-Blow to the Knee, Contact to the Leg or Foot, and Sliding: Video Analysis of 37 Consecutive Injuries","2021","Journal of Orthopaedic and Sports Physical Therapy","51","12","","611","618","7","9","10.2519/jospt.2021.10529","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121695985&doi=10.2519%2fjospt.2021.10529&partnerID=40&md5=fc4145bad3ee328376796e2f0ce007e8","Isokinetic Medical Group, Education and Research Department, FIFA Medical Centre of Excellence, Bologna, Italy; Faculty of Sport, Allied Health and Performance Science, St Mary's University, London, United Kingdom; Isokinetic Medical Group, FIFA Medical Centre of Excellence, Milan, Italy; Clinica Ortopedica e Traumatologica 2, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy","Buckthorpe M., Isokinetic Medical Group, Education and Research Department, FIFA Medical Centre of Excellence, Bologna, Italy, Faculty of Sport, Allied Health and Performance Science, St Mary's University, London, United Kingdom; Pisoni D., Isokinetic Medical Group, FIFA Medical Centre of Excellence, Milan, Italy; Tosarelli F., Isokinetic Medical Group, Education and Research Department, FIFA Medical Centre of Excellence, Bologna, Italy; Danelon F., Isokinetic Medical Group, FIFA Medical Centre of Excellence, Milan, Italy; Grassi A., Clinica Ortopedica e Traumatologica 2, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy; della Villa F., Isokinetic Medical Group, Education and Research Department, FIFA Medical Centre of Excellence, Bologna, Italy","OBJECTIVE: To describe the mechanisms, situational patterns, and biomechanics (kinematics) of medial collateral ligament (MCL) injuries in professional male soccer players. DESIGN: Case series. METHODS: Fifty-seven consecutive MCL injuries across 2 seasons of professional soccer matches were identified. We obtained and reviewed 37 of 57 (65%) injury videos to establish the injury mechanism, situational pattern, and knee flexion angle. We used detailed biomechanical analysis to assess the indirect and noncontact injuries. Injury layoff times, timing of injuries during the match, and location of the injuries on the pitch were also reported. RESULTS: Twenty-three (62%) injuries were direct contact, 9 (24%) were indirect contact, and 5 (14%) were noncontact. Three main sprain mechanisms were noted: (1) direct contact/blow to the knee (n = 16), (2) contact to the leg or foot (lever like) (n = 7), and (3) sliding (n = 9). Seventy-three percent of MCL injuries occurred during 2 main situations: (1) pressing/tackling (n = 14, 38%) and (2) being tackled (n = 13, 35%). For indirect and noncontact injuries, knee valgus loading (100% of cases), hip abduction (73% of cases), and external foot rotation (92% of cases) were prominent injury kinematics, often with lateral trunk tilt (median, 10°; 64% of cases) and rotation (64% of cases). Knee flexion angles were higher for indirect and noncontact injuries (median, 100°) than for direct-contact injuries (median, 22°; P<.01). CONCLUSION: Nearly two thirds of MCL injuries occurred after direct contact; 1 in every 4 MCL injuries occurred after indirect contact. Three sprain mechanisms characterized MCL injuries: (1) blow to the knee, (2) contact to the leg or foot (lever like), and (3) sliding. Copyright © 2021 JOSPT®, Inc","Biomechanics; Injury mechanisms; Injury prevention; Knee injuries; Soccer","Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Collateral Ligaments; Humans; Knee Joint; Leg; Male; Soccer; anterior cruciate ligament injury; biomechanics; collateral ligament; human; knee; leg; male; soccer","Bahr R, Krosshaug T., Understanding injury mechanisms: a key component of preventing injuries in sport, Br J Sports Med, 39, pp. 324-329, (2005); Buckthorpe M., Optimising the late-stage rehabilitation and return-to-sport training and testing process after ACL reconstruction, Sports Med, 49, pp. 1043-1058, (2019); Cochrane JL, Lloyd DG, Buttfield A, Seward H, McGivern J., Characteristics of anterior cruciate ligament injuries in Australian football, J Sci Med Sport, 10, pp. 96-104, (2007); Della Villa F, Buckthorpe M, Grassi A, Et al., Systematic video analysis of ACL injuries in professional male football (soccer): injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, Br J Sports Med, 54, pp. 1423-1432, (2020); Devita P, Skelly WA., Effect of landing stiffness on joint kinetics and energetics in the lower extremity, Med Sci Sports Exerc, 24, pp. 108-115, (1992); Ekstrand J, Hagglund M, Walden M., Injury incidence and injury patterns in professional football: the UEFA injury study, Br J Sports Med, 45, pp. 553-558, (2011); Eliakim E, Morgulev E, Lidor R, Meckel Y., Estimation of injury costs: financial damage of English Premier League teams' underachievement due to injuries, BMJ Open Sport Exerc Med, 6, (2020); Grassi A, Rossi G, D'Hooghe P, Et al., Eighty-two per cent of male professional football (soccer) players return to play at the previous level two seasons after Achilles tendon rupture treated with surgical repair, Br J Sports Med, 54, pp. 480-486, (2020); Grood ES, Noyes FR, Butler DL, Suntay WJ., Ligamentous and capsular restraints preventing straight medial and lateral laxity in intact human cadaver knees, J Bone Joint Surg Am, 63, pp. 1257-1269, (1981); Hagglund M, Walden M, Magnusson H, Kristenson K, Bengtsson H, Ekstrand J., Injuries affect team performance negatively in professional football: an 11-year follow-up of the UEFA Champions League injury study, Br J Sports Med, 47, pp. 738-742, (2013); Hickey J, Shield AJ, Williams MD, Opar DA., The financial cost of hamstring strain injuries in the Australian Football League, Br J Sports Med, 48, pp. 729-730, (2014); Indelicato PA, Linton RC., Medial ligament injuries in the adult, DeLee & Drez's Orthopaedic Sports Medicine: Principles and Practice, pp. 1938-1949, (2003); Koga H, Nakamae A, Shima Y, Bahr R, Krosshaug T., Hip and ankle kinematics in noncontact anterior cruciate ligament injury situations: video analysis using model-based image matching, Am J Sports Med, 46, pp. 333-340, (2018); Koga H, Nakamae A, Shima Y, Et al., Mechanisms for noncontact anterior cruciate ligament injuries: knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, pp. 2218-2225, (2010); Krosshaug T, Andersen TE, Olsen OEO, Myklebust G, Bahr R., Research approaches to describe the mechanisms of injuries in sport: limitations and possibilities, Br J Sports Med, 39, pp. 330-339, (2005); Krosshaug T, Nakamae A, Boden B, Et al., Estimating 3D joint kinematics from video sequences of running and cutting maneuvers-assessing the accuracy of simple visual inspection, Gait Posture, 26, pp. 378-385, (2007); Krosshaug T, Nakamae A, Boden BP, Et al., Mechanisms of anterior cruciate ligament injury in basketball: video analysis of 39 cases, Am J Sports Med, 35, pp. 359-367, (2007); LaPrade RF, Wijdicks CA., The management of injuries to the medial side of the knee, J Orthop Sports Phys Ther, 42, pp. 221-233, (2012); Leventer L, Eek F, Hofstetter S, Lames M., Injury patterns among elite football players: a media-based analysis over 6 seasons with emphasis on playing position, Int J Sports Med, 37, pp. 898-908, (2016); Locks R, Utsunomiya H, Briggs KK, McNamara S, Chahla J, Philippon MJ., Return to play after hip arthroscopic surgery for femoroacetabular impingement in professional soccer players, Am J Sports Med, 46, pp. 273-279, (2018); Lundblad M, Hagglund M, Thomee C, Et al., Medial collateral ligament injuries of the knee in male professional football players: a prospective three-season study of 130 cases from the UEFA Elite Club Injury Study, Knee Surg Sports Traumatol Arthrosc, 27, pp. 3692-3698, (2019); Lundblad M, Walden M, Magnusson H, Karlsson J, Ekstrand J., The UEFA injury study: 11-year data concerning 346 MCL injuries and time to return to play, Br J Sports Med, 47, pp. 759-762, (2013); Marshall SW, Padua D, McGrath M., Incidence of ACL injury, Understanding and Preventing Noncontact ACL Injuries, pp. 5-29, (2007); McLean SG, Huang X, Su A, van den Bogert AJ., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clin Biomech (Bristol, Avon), 19, pp. 828-838, (2004); Montgomery C, Blackburn J, Withers D, Tierney G, Moran C, Simms C., Mechanisms of ACL injury in professional rugby union: a systematic video analysis of 36 cases, Br J Sports Med, 52, pp. 994-1001, (2018); Narvani A, Mahmud T, Lavelle J, Williams A., Injury to the proximal deep medial collateral ligament: a problematical subgroup of injuries, J Bone Joint Surg Br, 92, pp. 949-953, (2010); Niederer D, Engeroff T, Wilke J, Vogt L, Banzer W., Return to play, performance, and career duration after anterior cruciate ligament rupture: a case-control study in the five biggest football nations in Europe, Scand J Med Sci Sports, 28, pp. 2226-2233, (2018); Peterson L, Junge A, Chomiak J, Graf-Baumann T, Dvorak J., Incidence of football injuries and complaints in different age groups and skill-level groups, Am J Sports Med, 28, pp. S51-S57, (2000); Powers CM., The influence of abnormal hip mechanics on knee injury: a biomechanical perspective, J Orthop Sports Phys Ther, 40, pp. 42-51, (2010); Quatman CE, Quatman-Yates CC, Hewett TE., A 'plane' explanation of anterior cruciate ligament injury mechanisms: a systematic review, Sports Med, 40, pp. 729-746, (2010); Tomczak M, Tomczak E., The need to report effect size estimates revisited. An overview of some recommended measures of effect size, Trends Sport Sci, 1, pp. 19-25, (2014); van Mechelen W, Hlobil H, Kemper HC., Incidence, severity, aetiology and prevention of sports injuries. A review of concepts, Sports Med, 14, pp. 82-99, (1992); Walden M, Krosshaug T, Bjorneboe J, Andersen TE, Faul O, Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: a systematic video analysis of 39 cases, Br J Sports Med, 49, pp. 1452-1460, (2015); Warren LF, Marshall JL., The supporting structures and layers on the medial side of the knee: an anatomical analysis, J Bone Joint Surg Am, 61, pp. 56-62, (1979)","M. Buckthorpe; Faculty of Sport, Allied Health and Performance Science, St Mary's University, London, Twickenham, TW1 4SX, United Kingdom; email: matthew.buckthorpe@stmarys.ac.uk","","Movement Science Media","01906011","","JOSPD","34784244","English","J. Orthop. Sports Phys. Ther.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85121695985" "Yu C.; Huang T.-Y.; Ma H.-P.","Yu, Chun (57870516500); Huang, Ting-Yuan (57870611900); Ma, Hsi-Pin (7403096265)","57870516500; 57870611900; 7403096265","Motion Analysis of Football Kick Based on an IMU Sensor","2022","Sensors","22","16","6244","","","","8","10.3390/s22166244","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85137126941&doi=10.3390%2fs22166244&partnerID=40&md5=f17b3bd179337703e0d836a566d65334","Interdisciplinary Program of Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan; Department of Electrical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan; Center for Sport Science and Technology, National Tsing Hua University, Hsinchu, 300044, Taiwan","Yu C., Interdisciplinary Program of Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan; Huang T.-Y., Interdisciplinary Program of Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan; Ma H.-P., Department of Electrical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan, Center for Sport Science and Technology, National Tsing Hua University, Hsinchu, 300044, Taiwan","A greater variety of technologies are being applied in sports and health with the advancement of technology, but most optoelectronic systems have strict environmental restrictions and are usually costly. To visualize and perform quantitative analysis on the football kick, we introduce a 3D motion analysis system based on a six-axis inertial measurement unit (IMU) to reconstruct the motion trajectory, in the meantime analyzing the velocity and the highest point of the foot during the backswing. We build a signal processing system in MATLAB and standardize the experimental process, allowing users to reconstruct the foot trajectory and obtain information about the motion within a short time. This paper presents a system that directly analyzes the instep kicking motion rather than recognizing different motions or obtaining biomechanical parameters. For the instep kicking motion of path length around 3.63 m, the root mean square error (RMSE) is about 0.07 m. The RMSE of the foot velocity is 0.034 m/s, which is around 0.45% of the maximum velocity. For the maximum velocity of the foot and the highest point of the backswing, the error is approximately 4% and 2.8%, respectively. With less complex hardware, our experimental results achieve excellent velocity accuracy. © 2022 by the authors.","football; IMU; motion analysis; sports technology; trajectory reconstruction","Biomechanical Phenomena; Foot; Football; Lower Extremity; Motion; Soccer; Environmental technology; Mean square error; Motion analysis; Optoelectronic devices; Sports; Trajectories; 3-D motion analysis; 3D motion analysis; Environmental restriction; Inertial measurements units; Kicking motions; Maximum velocity; Optoelectronic systems; Root mean square errors; Sport technologies; Trajectory reconstruction; biomechanics; foot; football; lower limb; motion; soccer; Velocity","Foxlin E., Pedestrian tracking with shoe-mounted inertial sensors, IEEE Comput. Graph. Appl, 25, pp. 38-46, (2005); Bailey G.P., Harle R., Assessment of foot kinematics during steady state running using a foot-mounted IMU, Procedia Eng, 72, pp. 32-37, (2014); Schmidt M., Rheinlander C., Nolte K.F., Wille S., Wehn N., Jaitner T., IMU-based determination of stance duration during sprinting, Procedia Eng, 147, pp. 747-752, (2016); Yuan Q., Chen I.M., Human velocity and dynamic behavior tracking method for inertial capture system, Sens. Actuators A Phys, 183, pp. 123-131, (2012); Yuan Q., Chen I.M., Localization and velocity tracking of human via 3 IMU sensors, Sens. Actuators A Phys, 212, pp. 25-33, (2014); Rawashdeh S.A., Rafeldt D.A., Uhl T.L., Wearable IMU for shoulder injury prevention in overhead sports, Sensors, 16, (2016); Lapinski M., Medeiros C.B., Scarborough D.M., Berkson E., Gill T.J., Kepple T., Paradiso J.A., A wide-range, wireless wearable inertial motion sensing system for capturing fast athletic biomechanics in overhead pitching, Sensors, 19, (2019); Liu S., Zhang J., Zhang Y., Zhu R., A wearable motion capture device able to detect dynamic motion of human limbs, Nat Commun, 11, (2020); Nguyen L.N.N., Rodriguez-Martin D., Catala A., Perez-Lopez C., Sama A., Cavallaro A., Basketball Activity Recognition using Wearable Inertial Measurement Units, Proceedings of the XVI International Conference on Human Computer Interaction (Interacción ’15), pp. 1-6, (2015); Holzemann A., Laerhoven K.V., Using Wrist-Worn Activity Recognition for Basketball Game Analysis, Proceedings of the 5th International Workshop on Sensor-Based Activity Recognition and Interaction (iWOAR ’18), pp. 1-6, (2018); Hu X., Liang F., Fang Z., Qu X., Zhao Z., Ren Z., Cai W., Automatic temporal event detection of the Ollie movement during skateboarding using wearable IMUs, Sports Biomech, (2021); Blair S., Duthie G., Robertson S., Hopkins W., Ball K., Concurrent validation of an inertial measurement system to quantify kicking biomechanics in four football codes, J. Biomech, 73, pp. 24-32, (2019); Horenstein R.E., Goudeau Y.R., Lewis C.L., Shefelbine S.J., Using magneto-inertial measurement units to pervasively measure hip joint motion during sports, Sensors, 20, (2020); Wilmes E., De Ruiter C.J., Bastiaansen B.J.C., Van Zon J.F.J.A., Vegter R.J.K., Brink M.S., Goedhart E.A., Lemmink K.A.P.M., Savelsbergh G.J.P., Inertial sensor-based motion tracking in football with movement intensity quantification, Sensors, 20, (2020); Fuss F.K., Duking P., Weizman Y., Discovery of a sweet spot on the foot with a smart wearable soccer boot sensor that maximizes the chances of scoring a curved kick in soccer, Front. Physiol, 9, (2018); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, J. Sports Sci, 20, pp. 293-299, (2002); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomech, 4, pp. 59-72, (2005); Kondo Y., Ishii S., Aoyagi H., Hossain T., Yokokubo A., Lopez G., FootbSense: Soccer Moves Identification Using a Single IMU, Sensor- and Video-Based Activity and Behavior Computing, 291, (2022); Kim W., Kim M., Sports motion analysis system using wearable sensors and video cameras, Proceedings of the 2017 International Conference on Information and Communication Technology Convergence (ICTC), pp. 1089-1091, (2017); Zaki R., Bulgiba A., Ismail R., Ismail N.A., Statistical methods used to test for agreement of medical instruments measuring continuous variables in method comparison studies: A systematic review, PLoS ONE, 7, (2012); World’s First Wide-Range 6-Axis MEMS MotionTracking™ Device for Sports and High Impact Applications, DS-000192 Datasheet; Lapinski M., A Platform for High-Speed Biomechanical Data Analysis Using Wearable Wireless Sensors, Ph.D. Thesis, (2013); Ishii H., Yanagiya T., Naito H., Katamoto S., Maruyama T., Theoretical Study of Factors Affecting Ball Velocity in Instep Soccer Kicking, J. Appl. Biomech, 28, pp. 258-270, (2012); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J. Sports Sci. Med, 6, pp. 154-165, (2007); Zhou L., Tunca C., Fischer E., Brahms M., Ersoy C., Granacher U., Arnrich B., Validation of an IMU Gait Analysis Algorithm for Gait Monitoring in Daily Life Situations, Proceedings of the 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), pp. 4229-4232, (2020); Servati A., Zou L., Wang Z.J., Ko F., Servati P., Novel Flexible Wearable Sensor Materials and Signal Processing for Vital Sign and Human Activity Monitoring, Sensors, 17, (2017); Garlant J.A., Ammann K.R., Slepian M.J., Stretchable Electronic Wearable Motion Sensors Delineate Signatures of Human Motion Tasks, ASAIO J, 64, pp. 351-359, (2018); Rogers J.A., Someya T., Huang Y., Materials and Mechanics for Stretchable Electronics, Science, 327, pp. 1603-1607, (2010); Liu L., Qiu S., Wang Z.L., Li J., Wang J.X., Canoeing Motion Tracking and Analysis via Multi-Sensors Fusion, Sensors, 20, (2020); Medeiros C.B., Wanderley M.M., Multiple-Model Linear Kalman Filter Framework for Unpredictable Signals, IEEE Sens. J, 14, pp. 979-991, (2014)","H.-P. Ma; Department of Electrical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan; email: hp@ee.nthu.edu.tw","","MDPI","14248220","","","36016005","English","Sensors","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85137126941" "Pietraszewski B.; Siemieński A.; Bober T.; Struzik A.; Rutkowska-Kucharska A.; Nosal J.; Rokita A.","Pietraszewski, Bogdan (6504769077); Siemieński, Adam (6507227823); Bober, Tadeusz (6603565445); Struzik, Artur (55813050200); Rutkowska-Kucharska, Alicja (56967068800); Nosal, Jarosław (55807940600); Rokita, Andrzej (55734371300)","6504769077; 6507227823; 6603565445; 55813050200; 56967068800; 55807940600; 55734371300","Lower extremity power in female soccer athletes: A pre-season and in-season comparison","2015","Acta of Bioengineering and Biomechanics","17","3","","129","135","6","8","10.5277/ABB-00139-2014-02","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84964203454&doi=10.5277%2fABB-00139-2014-02&partnerID=40&md5=0a0fa31cd1b00ba52d60afa7ee1584f9","Department of Biomechanics, University School of Physical Education, Wrocław, Poland; Department of Team Sport Games, University School of Physical Education, Wrocław, Poland; Higher School of Physiotherapy, Wrocław, Poland","Pietraszewski B., Department of Biomechanics, University School of Physical Education, Wrocław, Poland; Siemieński A., Department of Biomechanics, University School of Physical Education, Wrocław, Poland; Bober T., Higher School of Physiotherapy, Wrocław, Poland; Struzik A., Department of Team Sport Games, University School of Physical Education, Wrocław, Poland; Rutkowska-Kucharska A., Department of Biomechanics, University School of Physical Education, Wrocław, Poland; Nosal J., Department of Team Sport Games, University School of Physical Education, Wrocław, Poland; Rokita A., Department of Team Sport Games, University School of Physical Education, Wrocław, Poland","Purpose: Lower extremity power is an important physical capacity of a soccer athlete. Power represents, and can be modified by, the training of strength and speed. Pre-season and in-season training differs in the relative emphasis on these two quantities. It is nevertheless desirable that the mechanical power remain the same or become higher during the in-season period. The purpose of this study was to identify changes in quantities related to “explosive strength” and to check whether, in collegiate female soccer players, pre- and inseason lower extremity power will remain unaltered. Methods: Twenty collegiate female soccer players, representing all field positions, participated. Lower extremity power was assessed by a series of drop jumps executed from four different heights (15, 30, 45, and 60 cm). Mechanical power was calculated using subject’s mass, jump height, and acceleration due to gravity. This value was further normalized by body mass of each athlete to obtain the relative (or normalized) mechanical power. Results: The normalized lower extremity mechanical power was highest when landing from the 30 cm height for both pre- and inseason periods. However, contrary to expectations, it turned out lower during the in-season than during the pre-season test, even though no significant differences were found between the corresponding jump heights. Conclusions: It is concluded that altered, perhaps inadequate, training strategies were employed during the in-season period. Besides, advantages of adding the relative mechanical power as a season readiness indicator are underlined compared with relying on the jump height alone. © 2015, Institute of Machine Design and Operation. All rights reserved.","Countermovement jump; Drop jump; Plyometric training; Relative power","Athletes; Biomechanical Phenomena; Female; Humans; Leg; Motor Activity; Seasons; Soccer; Young Adult; acceleration; athlete; expectation; female; gravity; height; human; human experiment; leg; season; soccer; biomechanics; clinical trial; comparative study; leg; motor activity; physiology; young adult","Bober T., Rutkowska-Kucharska A., Pietraszewski B., Lesiecki M., Biomechanical criteria for specifying the load applied in plyometric training in basketball, Research Yearbook, 12, 2, pp. 227-231, (2006); Bober T., Rutkowska-Kucharska A., Pietraszewski B., Plyometric exercises - Biomechanical characteristics, indexes, applications, Sport Wyczynowy, 7-9, pp. 511-513, (2007); Campo S.S., Vaeyens R., Philippaerts R.M., Redondo J.C., De Benito A.M., Cuadrado G., Effects of lower-limb plyometric training on body composition, explosive strength, and kicking speed in female soccer players, J. Strength Cond. Res., 23, 6, pp. 1714-1722, (2009); Chimera N.J., Swanik K.A., Swanik C.B., Straub S.J., Effect of plyometric training on muscle-activation strategies and performance in female athletes, J. Athl. Train, 39, 1, pp. 24-31, (2004); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes: A prospective study, Am. J. Sports Med., 27, 6, pp. 699-706, (1999); Kellis S.E., Tsitskaris G.K., Nikopoulou M.D., Mousikou K.C., The evaluation of jumping ability of male and female basketball players according to their chronological age and major leagues, J. Strength Cond. Res., 13, 1, pp. 40-46, (1999); Kotzamanidis C., Chatzopoulos D., Michailidis C., Papaiakovou G., Patikas D., The effect of a combined highintensity strength and speed training program on the running and jumping ability of soccer players, J. Strength Cond. Res., 19, 2, pp. 369-375, (2005); Laffaye G., Choukou M.A., Gender bias in the effect of dropping height on jumping performance in volleyball players, J. Strength Cond. Res., 24, 8, pp. 2143-2148, (2010); Lees A., Nolan L., The biomechanics of soccer: A review, J. Sports Sci., 16, 3, pp. 211-234, (1998); McClymont D., Hore A., Use of the Reactive Strength Index RSI as a plyometric monitoring tool, Proceedings of the 5th World Congress of Science in Football, (2003); Myer G.D., Ford K.R., Palumbo J.P., Hewett A.E., Neuromuscular training improves performance and lowerextremity biomechanics in female athletes, J. Strength Cond. Res., 19, 1, pp. 51-60, (2005); Oliver J., Armstrong N., Williams C., Changes in jump performance and muscle activity following soccer-specific exercise, J. Sports Sci., 26, 2, pp. 141-148, (2008); Pietraszewski B., Rutkowska-Kucharska A., Relative power of lower limbs in drop jump, Acta Bioeng. Biomech., 13, 1, pp. 13-18, (2011); Rubley M.D., Haase A.C., Holcomb W.R., Girouard T.J., Tandy R.D., The effect of plyometric training on power and kicking distance in female adolescent soccer players, J. Strength Cond. Res., 25, 1, pp. 129-134, (2011); Stonkus S., Basketball - History, Theory, Didactics, Lietuvos Kuno Kulturos Akademija, (2003); Struzik A., Pietraszewski B., Examination of the relationship between the static moment of force and the height of counter movement jump (CMJ) by using modern measuring devices, Acta Bio-Optica et Informatica Medica, 16, 4, pp. 346-350, (2010); Trzaskoma Z., Trzaskoma L., Strength and power in elite male and female players engaged in team sports, Acta Bioeng. Biomech., 1, pp. 519-522, (1999); Valovich McLeod T.C., Armstrong T., Miller M., Sauers J.L., Balance improvements in female high school basketball players after a 6-week neuromuscular-training program, J. Sport Rehabil., 18, 4, pp. 465-481, (2009); Vasconcellos F.V.A., De Salles P.G.C.M., Achour Junior A., De Mello D.B., Dantas E.H.M., The vertical jump height of soccer players after static overstretching, Hum. Mov., 13, 1, pp. 4-7, (2012); Walden M., Hagglund M., Werner J., Ekstrand J., The epidemiology of anterior cruciate ligament injury in football (soccer): A review of the literature from a gender-related perspective, Knee Surg. Sports Traumatol. Arthrosc., 19, 1, pp. 3-10, (2011)","A. Siemieński; Department of Biomechanics, University School of Physical Education, Wrocław, Ul. Mickiewicza 58, 51-684, Poland; email: adam.siemienski@awf.wroc.pl","","Institute of Machine Design and Operation","1509409X","","","26686768","English","Acta Bioeng. Biomech.","Article","Final","","Scopus","2-s2.0-84964203454" "Zhang X.; Shan G.; Liu F.; Yu Y.","Zhang, Xiang (54381067000); Shan, Gongbing (7005942347); Liu, Feng (57218291657); Yu, Yaguang (55570749500)","54381067000; 7005942347; 57218291657; 55570749500","Jumping side volley in soccer-A biomechanical preliminary study on the flying kick and its coaching know-how for practitioners","2020","Applied Sciences (Switzerland)","10","14","4785","","","","10","10.3390/app10144785","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85088646636&doi=10.3390%2fapp10144785&partnerID=40&md5=821fbe10cd02e614b0668b469b48c27b","Department of Physical Education, Xinzhou Teachers' University, Xinzhou, 034000, China; Biomechanics Lab, Faculty of Arts and Science, University of Lethbridge, Lethbridge, T1K 3M4, AB, Canada; School of Physical Education, Shaanxi Normal University, Xi'an, 710119, China; College of Martial Arts, Shandong Sport University, Rizhao, 276800, China","Zhang X., Department of Physical Education, Xinzhou Teachers' University, Xinzhou, 034000, China; Shan G., Department of Physical Education, Xinzhou Teachers' University, Xinzhou, 034000, China, Biomechanics Lab, Faculty of Arts and Science, University of Lethbridge, Lethbridge, T1K 3M4, AB, Canada, School of Physical Education, Shaanxi Normal University, Xi'an, 710119, China; Liu F., School of Physical Education, Shaanxi Normal University, Xi'an, 710119, China; Yu Y., College of Martial Arts, Shandong Sport University, Rizhao, 276800, China","The jumping side volley has created breathtaking moments and cherished memories for soccer fans. Regrettably, scientific studies on the skill cannot be found in the literature. Relying on the talent of athletes to improvise on the fly can hardly be considered a viable learning method. This study targeted to fill this gap by quantifying the factors of the jumping side volley and to contribute to the development of a coaching method for it. Using 3D motion capture (12 cameras, 200 Hz) and full-body biomechanical modeling, our study aimed to identify elements that govern the entrainment of skill execution. Given the rarity of players who have acquired this skill and the low success rate of the kick (even in professional games), we were able to achieve and review 23 successful trials from five college-level subjects and quantify them for the study. The results unveiled the following key elements: (1) the control of trunk rotation during jumping, (2) the angle between thighs upon take-off, (3) the whip-like control of the kicking leg while airborne, (4) timing between ball motion and limb coordination, and (5) damping mechanism during falling. An accurate kick can normally be achieved through repetitive training. This underlines the need for athletes to master a safe landing technique that minimizes risk of injury during practice. Therefore, training should begin with learning a safe falling technique. © 2020 by the authors.","3D motion capture; Dispersion of impact load during falling; Full-body biomechanical modeling; Hip flexibility; Whip-like movement; X-factor","","Average Number of Goals Scored per Game at the FIFA World Cup from 1930 to 2018. 2020; Hyballa P., The art of flying, Success Soccer, 5, pp. 19-26, (2002); Reilly T., Williams M., Science and Soccer, (2003); Shan G., Biomechanical Know-how of Fascinating Soccer-kicking Skills-3D, Full-body Demystification of Maximal Instep Kick, Bicycle Kick & Side Volley, Proceedings of the 8th International Scientific Conference on Kinesiology, (2017); Shan G., Zhang X., Wan B., Yu D., Wilde B., Visentin P., Biomechanics of coaching maximal instep soccer kick for practitioners, Interdiscip. Sci. Rev., 44, pp. 12-20, (2019); All 108 UEFA EURO 2016 Goals: Watch Every One. 2016, (2020); FIFA Puskás Award. 2019; Top Ten Goals of UEFA EURO 2016 Revealed. 2016; Shan G., Visentin P., Zhang X., Hao W., Yu D., Bicycle kick in soccer: Is the virtuosity systematically entrainable?, Sci. Bull., 60, pp. 819-821, (2015); Smith P.G., Morrow R.H., Ross D.A., Preliminary studies and pilot testing, Field Trials of Health Interventions: A Toolbox, (2015); The Most Precise MoCap Ecosystem. 2020; Smith S.L., Application of high-speed videography in sports analysis, Ultrahigh-and High-Speed Photography, Videography, and Photonics, (1993); Chang S.T., Evans J., Crowe S., Zhang X., Shan G., An innovative approach for Real Time Determination of Power and Reaction Time in a Martial Arts Quasi-Training Environment Using 3D Motion Capture and EMG Measurements, Arch. Budo, 7, pp. 185-196, (2011); Wan B., Gao Y., Wang Y., Zhang X., Li H., Shan G., Hammer Throw: A Pilot Study for a Novel Digital-route for Diagnosing and Improving Its Throw Quality, Appl. Sci., 10, (2020); Li S., Zhang Z., Wan B., Wilde B., Shan G., The relevance of body positioning and its training effect on badminton smash, J. Sports Sci., 35, pp. 310-316, (2017); Liu Y., Kong J., Wang X., Shan G., Biomechanical analysis of Yang's spear turning-stab technique in Chinese martial arts, Phys. Act. Rev., 8, pp. 16-22, (2020); Michalowski T., Applications of MATLAB in Science and Engineering, (2011); Yu D., Yu Y., Wilde B., Shan G., Biomechanical characteristics of the axe kick in Tae Kwon-Do, Arch. Budo, 8, pp. 213-218, (2012); Visentin P., Staples T., Wasiak E.B., Shan G., A pilot study on the efficacy of line-of-sight gestural compensation while conducting music, Percept. Mot. Skills, 110, pp. 647-653, (2010); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomech., 4, pp. 59-72, (2005); Shan G., Influences of Gender and Experience on the Maximal Instep Soccer Kick, Eur. J. Sport Sci., 9, pp. 107-114, (2009); Shan G., Zhang X., From 2D Leg Kinematics to 3D Full-body Biomechanics-The Past, Present and Future of Scientific Analysis of Maximal Instep Kick in Soccer, Sports Med. Arthrosc. Rehabil. Ther. Technol., 3, (2011); Shan G., Yuan J., Hao W., Gu M., Zhang X., Regression equations for estimating the quality of maximal instep kick by males and females in soccer, Kinesiology, 44, pp. 139-147, (2012); Shan G., Daniels D., Wang C., Wutzke C., Lemire G., Biomechanical analysis of maximal instep kick by female soccer players, J. Hum. Mov. Stud., 49, pp. 149-168, (2005); Wan B., Shan G., Biomechanical modeling as a practical tool for predicting injury risk related to repetitive muscle lengthening during learning and training of human complex motor skills, SpringerPlus, 5, (2016); Shan G., Bohn C., Anthropometrical data and coefficients of regression related to gender and race, Appl. Ergon., 34, pp. 327-337, (2003); Winter D.A., Biomechanics and Motor Control of Human Movement, (2009); Kearney J.K., Bhat D.N., Prasad B., Yuan S.S., Efficient generation of whip-like throwing and striking motions, Models and Techniques in Computer Animation, pp. 270-284, (1993); Zhang X., Shan G., Where do golf driver swings go wrong?-Factors Influencing Driver Swing Consistency, Scand. J. Med. Sci. Sports, 24, pp. 749-757, (2014); Zhang Z., Li S., Wan B., Visentin P., Jiang Q., Dyck M., Li H., Shan G., The influence of X-factor (trunk rotation) and experience on the quality of the badminton forehand smash, J. Hum. Kinet., 53, pp. 9-22, (2016); Wasik J.A., Ortenburger D.O., Gora T.O., Shan G.O., Mosler D., Wodarski P., Michnik R.A., The influence of gender, dominant lower limb and type of target on the velocity of taekwon-do front kick, Acta Bioeng. Biomech., 20, pp. 133-138, (2018); Ballreich R., Baumann W., Grundlagen der Biomechanik des Sports (The Basics of Biomechanics in Sports), (1996); Davids K., Araujo D., Hristovski R., Passos P., Chow J.Y., Ecological dynamics and motor learning design in sport, Skill Acquisition in Sport: Research, Theory and Practice, pp. 112-130, (2012); Santos S.D., Memmert D., Sampaio J., Leite N., The spawns of creative behavior in team sports: A creativity developmental framework, Front. Psychol., 7, (2016)","G. Shan; Department of Physical Education, Xinzhou Teachers' University, Xinzhou, 034000, China; email: g.shan@uleth.ca","","MDPI AG","20763417","","","","English","Appl. Sci.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85088646636" "Teymouri M.; Halabchi F.; Mirshahi M.; Mansournia M.A.; Ahranjani A.M.; Sadeghi A.","Teymouri, Meghdad (57196356382); Halabchi, Farzin (6505631803); Mirshahi, Maryam (55756881900); Mansournia, Mohammad Ali (34570618600); Ahranjani, Ali Mousavi (57196353802); Sadeghi, Amir (57196354162)","57196356382; 6505631803; 55756881900; 34570618600; 57196353802; 57196354162","Comparison of plantar pressure distribution between three different shoes and three common movements in futsal","2017","PLoS ONE","12","10","e0187359","","","","10","10.1371/journal.pone.0187359","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85032728067&doi=10.1371%2fjournal.pone.0187359&partnerID=40&md5=2b199a4dc645b068a897d1b10a8c15d7","Department of Physical Education, Payam Noor University (PNU), Shahrood, Iran; Sports Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Sports and Exercise Medicine, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran; Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran; Department of Epidemiology and Biostatistics, Tehran University of Medical Sciences, Tehran, Iran; Faculty of Engineering, Islamic Azad University, South Tehran Branch, Tehran, Iran; Faculty of Engineering, Rozbahan University, Sari, Iran","Teymouri M., Department of Physical Education, Payam Noor University (PNU), Shahrood, Iran; Halabchi F., Sports Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran, Department of Sports and Exercise Medicine, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran; Mirshahi M., Sports Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran; Mansournia M.A., Department of Epidemiology and Biostatistics, Tehran University of Medical Sciences, Tehran, Iran; Ahranjani A.M., Faculty of Engineering, Islamic Azad University, South Tehran Branch, Tehran, Iran; Sadeghi A., Faculty of Engineering, Rozbahan University, Sari, Iran","Introduction: Analysis of in-shoe pressure distribution during sport-specific movements may provide a clue to improve shoe design and prevent injuries. This study compared the mean and the peak pressures over the whole foot and ten separate areas of the foot, wearing different shoes during specific movements. Methods: Nine male adult recreational futsal players performed three trials of three sport-specific movements (shuffle, sprint and penalty kick), while they were wearing three brands of futsal shoes (Adidas, Lotto and Tiger). Plantar pressures on dominant feet were collected using the F-SCAN system. Peak and mean pressures for whole foot and each separate area were extracted. For statistical analysis, the mean differences in outcome variables between different shoes and movements were estimated using random-effects regression model using STATA ver.10. Results: In the average calculation of the three movements, the peak pressure on the whole foot in Adidas shoe was less than Lotto [8.8% (CI95%: 4.1–13.6%)] and Tiger shoes [11.8% (CI95%:7–16.7%)], (P<0.001). Also, the recorded peak pressure on the whole foot in penalty kick was 61.1% (CI95%: 56.3–65.9%) and 57.6% (CI95%: 52.8–62.3%) less than Shuffle and Sprint tests, respectively (P<0.001). Conclusion: Areas with the highest peak pressure during all 3 movements were not different between all shoes. This area was medial forefoot in cases of shuffle and sprint movements and medial heel in case of penalty kick. © 2017 Teymouri et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.","","Adult; Foot; Humans; Male; Movement; Pressure; Soccer; adult; Article; athlete; biomechanics; foot; foot sole; forefoot; futsal; heel; human; human experiment; leg movement; male; normal human; plantar pressure; pressure; soccer; weight bearing; comparative study; movement (physiology); pressure","FIFA Big Count, Statistical Summary, (2006); Junge A., Dvorak J., Graf-Baumann T., Peterson L., Football injuries during FIFA tournaments and the Olympic Games, 1998–2001: Development and implementation of an injury-reporting system, Am. J. Sports.med, 32, 1, pp. S80-S89, (2004); Castagna C., D'Ottavio S., Granda Vera J., Barbero Alvarez J.C., Match demands of professional Futsal: A case study, J Sci Med Sport, 12, 1, pp. 490-494, (2009); Barbero-Alvarez J., Soto V., Barbero-Alvarez V., Granda-Vera J., Match analysis and heart rate of futsal players during competition, J.sports.sci, 26, 4, pp. 63-73, (2008); Dogramaci S.N., Watsford M.L., A comparison of two different methods for time-motion analysis in team sports, Int. J.perf Analspor, 6, 1, pp. 73-83, (2006); Abate M., Schiavone C., Salini V., High prevalence of patellar and achillestendinopathies in futsal athletese, J Sports Sci Med, 11, 1, pp. 180-181, (2012); Junge A., Dvorak J., Injury risk of playing football in Futsal World Cups, Br J Sports Med, 44, 15, pp. 1089-1092, (2010); Cain L.E., Nicholson L.L., Adams R.D., Burns J., Foot morphology and foot/ankle injury in indoor football, J. Sci. Med. Sport, 10, 5, pp. 311-319, (2007); Angoorani H., Haratian Z., Mazaherinezhad A., Younesipour S., Injuries in Iran futsal national teams: A comparative study of incidence and characteristics, Asian J Sports Med, 5, 3, (2014); Dvorak J., Junge A., Chomiak J., Graf-Baumann T., Peterson L., Rosch D., Risk factor analysis for injuries in football players possibilities for a prevention program, Am. J. Sports.med, 28, pp. S69-S74, (2000); Eils E., Streyl M., Linnenbecker S., Thorwesten L., Volker K., Rosenbaum D., Characteristic plantar pressure distribution patterns during soccer-specific movements, Am. J. Sports. Med, 32, 1, pp. 140-145, (2004); Halabchi F., Angoorani H., Mirshahi M., Pourgharib M.H., Mansournia M.A., The prevalence of selected intrinsic risk factors for ankle sprain among elite Football and Basketball players, Asian J. Sports. Med, 7, 3, (2016); Knapp T.P., Mandelbaum B.R., Garrett W.E., Why are stress injuries so common in the soccer player?, Clin.sports. Med, 17, 4, pp. 835-853, (1998); Halabchi F., Mazaheri R., Seif-Barghi T., Patellofemoral pain syndrome and modifiable intrinsic risk factors; how to assess and address? Asian, J. Sports. Med., 4, 2, pp. 85-100, (2013); Althoff K., Hennig E., A comparison of futsal and outdoor soccer–consequences for footwear design, Footwear Sci, 3, pp. S1-S2, (2011); Cavanagh P.R., Jr H.F., Perry J., In-shoe plantar pressure measurement: A review, The Foot, 2, 4, pp. 185-194, (1992); Rosenbaum D., Becker H.P., Plantar pressure distribution measurements.Technical background and clinical applications, J. Foot.ankle. Surg, 3, 1, pp. 1-14, (1997); Bus S.A., De Lange A., Acomparison of the 1-step, 2-step, and 3-step protocols for obtaining barefoot plantar pressure data in the diabetic neuropathic foot, Clin.biomech, 20, 9, pp. 892-899, (2005); Keijsers N., Stolwijk N., Nienhuis B., Duysens J., A new method to normalize plantar pressure measurements for foot size and foot progression angle, J. Biomech, 42, 1, pp. 87-90, (2009); Bastos L.F., Tavares J.M.R., Improvement of modal matching image objects in dynamic pedobarography using optimization techniques, Articulated Motion and Deformable Objects, pp. 39-50, (2004); Zhu H.S., Wertsch J., Harris G., Loftsgaarden J., Price M., Foot pressure distribution during walking and shuffling, Arch. Phys.med. Rehabil, 72, 6, pp. 390-397, (1991); McDonough A.L., Batavia M., Chen F.C., Kwon S., Ziai J., The validity and reliability of the GAITRite system’s measurements: A preliminary evaluation, Arch. Phys.med. Rehabil, 82, 3, pp. 419-425, (2001); Titianova E.B., Mateev P.S., Tarkka I.M., Footprint analysis of gait using a pressure sensor system, J.electromyogr.kinesiol, 14, 2, pp. 275-281, (2004); Hughes J., Clark P., Linge K., Klenerman L., A comparison of two studies of the pressure distribution under the feet of normal subjects using different equipment, Foot.ankle.int., 14, 9, pp. 514-519, (1993); Che H., Nigg B., De Koning J., Relationship between plantar pressure distribution under the foot and insole comfort, Clin.biomech, 9, 6, pp. 335-341, (1994); Hennig E.M., Milani T.L., In-shoe pressure distribution for running in various types of footwear, J. Appl. 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Med, 32, 8, pp. 1893-1898, (2004); Fourchet F., Kelly L., Horobeanu C., Loepelt H., Taiar R., Millet G.P., Comparison of plantar pressure distribution in adolescent runners at low vs. High running velocity, Gait.posture, 35, 4, pp. 685-687, (2012); Santos D., Carline T., Flynn L., Pitman D., Feeney D., Patterson C., Westland E., Distribution of in-shoe dynamic plantar foot pressures in professional football players, The Foot, 11, 1, pp. 10-14, (2001); Carl H.D., Pauser J., Swoboda B., Jendrissek A., Brem M., Soccer boots elevate plantar pressures in elite Male soccer professionals, Clin J Sport Med, 24, 1, pp. 58-61, (2014); Wong P.L., Chamari K., Mao D.W., Wisloff U., Hong Y., Higher plantar pressure on the medial side in four soccer-related movements, Br. J. Sports. Med, 41, 2, pp. 93-100, (2007); Weist R., Rosenbaum D., Changes of plantar pressure and muscle activity patterns under the influence of fatigue under exhausting treadmill running, Emed Scientific Meeting; 2002 Kananaskis, Canada","F. Halabchi; Sports Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran; email: fhalabchi@tums.ac.ir","","Public Library of Science","19326203","","POLNC","29088278","English","PLoS ONE","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85032728067" "Kirkendall D.T.; Street G.M.","Kirkendall, D.T. (7003555207); Street, G.M. (56188012300)","7003555207; 56188012300","Mechanical jumping power in athletes.","1986","British journal of sports medicine","20","4","","163","164","1","8","10.1136/bjsm.20.4.163","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0022832453&doi=10.1136%2fbjsm.20.4.163&partnerID=40&md5=a521ce9d8490c5beb092174ec9f7f674","","","The Wingate cycle ergometer test is a widely used test of sustained muscular power. A limitation of the test is the lack of development and retrieval of stored elastic energy due to a lack of an eccentric phase. To measure mechanical power output of the entire stretch-shortening cycle, the test of Bosco et al (1983) was administered to 119 male athletes in 7 different activities during their pre-participation evaluations. The sports tested were indoor soccer, American football and ballet (professionals), outdoor soccer, basketball and wrestling (collegiate) and amateur bobsled. Results showed the overall average power output to be 20.37 W.kg-1 for the 60s reciprocal jumping test. Ballet dancers generated significantly less mechanical power than indoor soccer, basketball and bobsled athletes, while wrestlers generated significantly less power than indoor soccer and basketball athletes (all p less than 0.05). No other between-sport differences were seen. A subset of indoor soccer players (n = 10) were retested after 4 months of training. Power improved from 20.8 to 24.3 W.kg-1 (p less than 0.05). While between sport differences were limited, training differences in one subset of athletes were readily identified.","","Adult; Biomechanics; Energy Metabolism; Exercise Test; Humans; Male; Sports; adult; article; biomechanics; energy metabolism; exercise test; human; male; sport","","","","","03063674","","","3814986","English","Br J Sports Med","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-0022832453" "Hoshikawa Y.; Iida T.; Ii N.; Muramatsu M.; Nakajima Y.; Chumank K.; Kanehisa H.","Hoshikawa, Yoshihiro (7006180044); Iida, Tomomi (13404288100); Ii, Nozomi (46761146400); Muramatsu, Masataka (36779531500); Nakajima, Yoshiharu (57206865303); Chumank, Kentaro (54929809200); Kanehisa, Hiroaki (26643531500)","7006180044; 13404288100; 46761146400; 36779531500; 57206865303; 54929809200; 26643531500","Cross-sectional area of psoas major muscle and hip flexion strength in youth soccer players","2012","European Journal of Applied Physiology","112","10","","3487","3494","7","11","10.1007/s00421-012-2335-7","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84868550182&doi=10.1007%2fs00421-012-2335-7&partnerID=40&md5=4d1d4f6668db7e0ec236561bb2556fac","Sports Photonics Laboratory, Hamamatsu Photonics K.K., Iwata, Shizuoka 438-0016, 2150-1 Iwai, Japan; Yamaha Football Club Co. Ltd., Iwata, Shizuoka 438-0025, 2500, Shingai, Japan; National Institute of Fitness and Sports in Kanoya, Kanoya, Kagoshima 891-2393, 1 Shiromizu, Japan","Hoshikawa Y., Sports Photonics Laboratory, Hamamatsu Photonics K.K., Iwata, Shizuoka 438-0016, 2150-1 Iwai, Japan; Iida T., Sports Photonics Laboratory, Hamamatsu Photonics K.K., Iwata, Shizuoka 438-0016, 2150-1 Iwai, Japan; Ii N., Sports Photonics Laboratory, Hamamatsu Photonics K.K., Iwata, Shizuoka 438-0016, 2150-1 Iwai, Japan; Muramatsu M., Sports Photonics Laboratory, Hamamatsu Photonics K.K., Iwata, Shizuoka 438-0016, 2150-1 Iwai, Japan; Nakajima Y., Sports Photonics Laboratory, Hamamatsu Photonics K.K., Iwata, Shizuoka 438-0016, 2150-1 Iwai, Japan; Chumank K., Yamaha Football Club Co. Ltd., Iwata, Shizuoka 438-0025, 2500, Shingai, Japan; Kanehisa H., National Institute of Fitness and Sports in Kanoya, Kanoya, Kagoshima 891-2393, 1 Shiromizu, Japan","This study aimed to clarify the differences in the cross-sectional area (CSA) of the psoas major (PM) muscle and hip flexion force (HFF) of the right (dominant) side between adolescent male soccer players and age-matched non-athletes. PM CSA at L4-L5 and HFF at 1.05 rad/s were determined in 22 early (12.8-13.6 years) and 27 late (16.1-17.9 years) adolescent soccer players and 11 early (12.6-13.5 years) and 20 late (16.0-17.7 years) adolescent non-athletes. Fat-free mass (FFM) was greater in late adolescent soccer players than in late adolescent non-athletes, but was similar between the two early adolescent groups. Without the effect of age, PM CSA and HFF were greater in soccer players than in non-athletes. PM CSA and HFF were significantly correlated to FFM (soccer players, r = 0.860, P<0.0001; non-athletes, r = 0.709, P<0.0001) and PM CSA (soccer players, r = 0.760, P<0.0001; non-athletes, r = 0.777, P<0.0001), respectively. The difference between soccer players and non-athletes in PM CSA was still significant even when PM CSA was covaried for FFM. On the other hand, HFF covaried for PM CSA was similar between the two groups. The current results indicate that, as compared to age-matched non-athletes: (1) not only late, but also early adolescent soccer players have a greater PM CSA even when the difference in FFM was adjusted, and (2) their superiority in hip flexion force can be attributed to the difference in PM CSA. © Springer-Verlag 2012.","Adolescent athletes; Cross-sectional study; Dominant leg; Fat-free mass","Adolescent; Athletes; Biomechanics; Child; Female; Hip; Humans; Male; Psoas Muscles; Range of Motion, Articular; Soccer; adolescent; article; athlete; biomechanics; child; female; hip; human; joint characteristics and functions; male; physiology; psoas muscle; soccer","Andersson E., Oddsson L., Grundstrom H., Thorstensson A., The role of the psoas and iliacus muscles for stability and movement of the lumber spine, pelvis and hip, Scand J Med Sci Sports, 5, pp. 10-16, (1995); Andersson E.A., Nilsson J., Thorstensson A., Intramuscular EMG from the hip flexor muscles during human locomotion, Acta Physiol Scand, 161, pp. 361-370, (1997); 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Hu H., Meijer O.G., Van Dieen J.H., Hodges P.W., Bruijn S.M., Strijers R.L., Nanayakkara P.W.B., Van Royen B.J., Wu W.H., Xia C., Is the psoas a hip flexor in the active straight leg raise?, Eur Spine J, 20, pp. 759-765, (2011); Ishiguro N., Kanhisa H., Miyatani M., Masuo Y., Fukunaga T., A comparison of three bioelectrical impedance analyses for predicting lean body mass in a population with large difference in muscularity, Eur J Appl Physiol, 94, pp. 25-35, (2005); Kanehisa H., Fukunaga T., Profiles of musculo-skeletal development in limbs of college Olympic weightlifters and wrestlers, Eur J Appl Physiol, 79, pp. 414-420, (1999); Kanehisa H., Ikegawa S., Fukunaga T., Comparison of muscle cross-sectional areas between weight lifters and wrestlers, Int J Sports Med, 19, pp. 265-271, (1998); Kellis E., Katis A., The relationship between isokinetic knee extension and flexion strength with soccer kick kinematics: An electromyographic evaluation, J Sports Med Phys Fitness, 47, pp. 385-394, (2007); 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Sale D.G., Neural adaptation to strength training, Med Sci Sports Exerc, 20, SUPPL. 5, (1988); Santagaguida P.L., McGill S.M., The psoas major muscle: A three-dimensional geometric study, J Biomech, 28, pp. 339-345, (1995); Scimdtbleicher D., Haralambie G., Changes in contractile properties of muscle after strength training in man, Eur J Appl Physiol, 46, pp. 221-228, (1981); Taylor N.A.S., Sanders R.H., Howick E.I., Stanley S.N., Static and dynamic assessment of the Biodex dynamometer, Eur J Appl Physiol, 62, pp. 180-188, (1991); Taylor N.A., Cotter J.D., Stanley S.N., Marshall R.N., Functional torque-velocity and power-velocity characteristics of elite athletes, Eur J Appl Physiol, 62, pp. 116-121, (1991); Tumilty D., Physiological characteristics of elite soccer players, Sports Med, 16, pp. 80-96, (1993); Vincente-Rodeiquez G., Jimenez-Ramirez J., Ara I., Serrano-Sanchez J.A., Dorado C., Calbet J.A.L., Enhanced bone mass and physical fitness in prepubescent footballers, Bone, 33, pp. 853-859, (2003); Yoshio M., Murakami G., Sato T., Sato S., Noriyasu S., The function of the psoas major muscle: Passive kinetics and morphological using donated cadavers, J Orthop Sci, 7, pp. 199-207, (2002)","H. Kanehisa; National Institute of Fitness and Sports in Kanoya, Kanoya, Kagoshima 891-2393, 1 Shiromizu, Japan; email: hkane@nifs-k.ac.jp","","","14396319","","EJAPF","22297611","English","Eur. J. Appl. Physiol.","Article","Final","","Scopus","2-s2.0-84868550182" "Boraczynski M.T.; Sozanski H.A.; boraczynski T.W.","Boraczynski, Michal T. (56048039300); Sozanski, Henryk A. (55487397200); boraczynski, Tomasz W. (35117536500)","56048039300; 55487397200; 35117536500","EFFECTS OF A 12-MONTH COMPLEX PROPRIOCEPTIVECOORDINATIVE TRAINING PROGRAM ON SOCCER PERFORMANCE IN PREPUBERTAL BOYS AGED 10-11 YEARS","2019","Journal of Strength and Conditioning Research","33","5","","1380","1393","13","9","10.1519/JSC.0000000000001878","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85066010056&doi=10.1519%2fJSC.0000000000001878&partnerID=40&md5=1320a707a0e50d436bead321f970bbb5","Department of Physical Education, Jozef Rusiecki Olsztyn University College, Olsztyn, Poland; Department of Theory of Sport, Jozef Pilsudski University of Physical Education in Warsaw, Warsaw, Poland","Boraczynski M.T., Department of Physical Education, Jozef Rusiecki Olsztyn University College, Olsztyn, Poland; Sozanski H.A., Department of Theory of Sport, Jozef Pilsudski University of Physical Education in Warsaw, Warsaw, Poland; boraczynski T.W., Department of Physical Education, Jozef Rusiecki Olsztyn University College, Olsztyn, Poland","The aim was to examine the effects of a series of onfield proprioceptive-coordinative (P-C) exercises on motor performance (MP) in prepubertal soccer players. Fifty-three male soccer players aged 10.1-11.8 years were randomized among 2 experimental programs receiving P-C training (P-CT; n = 26) or regular training (RT; n = 27). A control group (C; n = 22) consisted of age-matched (10.3-11.9 years) cohorts not involved in any regular physical activity. Both experimental groups completed an identical 12-month comprehensive soccer program except training in P-CT was modified to substitute small-sided conditioning games with 24 multimode P-C exercises with modulated exercise intensity (every 8-9 weeks based on predicted maximal heart rate [HRmax]). Pre-, peri-, and posttraining measures included anthropometry and 5 tests assessing soccer-specific MP: Movement rhythm (turning the ball backwards-T1), motor adaptation (running with the ball around poles-T2), spatial orientation (running to sequentially numbered balls-T3), balance (single-leg static balance-T4), and kinesthetic differentiation of movement (landing the ball on a 2 3 2 m sector-T5). Repeated-measures analysis of variance revealed no significance between-group differences for age, anthropometry, and body-fat percentage at baseline. Significant main effects for group (P-CT vs. RT) were found in all tests (T1-T5) and main effects for time (group P-CT) in T3- T5, whereas a significant group 3 time interaction was observed only in T4 (F = 2.98, p = 0.0204). Post hoc tests indicated that P-CT attained significantly better results than RT at peritraining (by 26.4%; p < 0.01) and posttraining (by 31.9%, p < 0.01). Modulated exercise intensity had little effect on soccer performance (T1-T3, T5). Based on the results, it is recommended that the training of young soccer players be supplemented with the bilateral balance exercises and games used in the study. Furthermore, the suitability of monitoring HR in P-C exercises targeting the analyzed MP skills is questionable. © 2019 NSCA National Strength and Conditioning Association. All rights reserved.","Exercise intensity; Motor coordination abilities; Skill development; Youth soccer","Anthropometry; Athletic Performance; Biomechanical Phenomena; Body Weights and Measures; Child; Exercise; Humans; Male; Motor Skills; Movement; Proprioception; Running; Soccer; anthropometry; athletic performance; biomechanics; child; controlled study; exercise; human; male; morphometry; motor performance; movement (physiology); physiology; proprioception; randomized controlled trial; running; soccer","Ali A., Measuring soccer skill performance: A review, Scand J Med Sci Sports, 21, pp. 170-183, (2011); Bangsbo J, Mohr M, Krustrup P., Physical and metabolic demands of training and match-play in the elite football player, J Sports Sci, 24, pp. 665-674, (2006); Bressel E, Yonker JC, Kras J, Heath EM., Comparison of static and dynamic balance in female collegiate soccer, basketball, and gymnastics athletes, J Athl Train, 42, pp. 42-46, (2007); Buonomano DVand, Laje R., Population clocks: Motor timing with neural dynamics, Trends Cogn Sci, 14, pp. 521-527, (2010); Buschmann J, Bussmann H, Pabst K., The Basics of Coordination Training, Coordination: A New Approach to Soccer Coaching, pp. 9-20, (2002); Caraffa A, Cerulli G, Projetti M, Aisa G, Rizzo A., Prevention of anterior cruciate ligament injuries in soccer: A prospective controlled study of proprioceptive training, Knee Surg Sports Traumatol Arthrosc, 4, pp. 19-21, (1996); Chang YK, Tsai YJ, Chen TT, Hung TM., The impacts of coordinative exercise on executive function in kindergarten children: An ERP study, Exp Brain Res, 225, pp. 187-196, (2013); Cole TJ, Flegal KM, Nicholls D, Jackson AA., Body mass index cut offs to define thinness in children and adolescents: International survey, BMJ, 335, (2007); Croisier JL, Ganteaume S, Binet J, Genty M, Ferret JM., Strength imbalances and prevention of hamstring injury in professional soccer players a prospective study, Am J Sports Med, 36, pp. 1469-1475, (2008); Das SS, Banerjee AK., Variation in duration of training period on the performance variables of young soccer players, NIS Scientific J, 15, pp. 116-121, (1992); Davids K, Lees A, Burwitz L., Understanding and measuring coordination and control in kicking skills in soccer: Implications for talent identification and skill acquisition, J Sport Sci, 18, pp. 703-714, (2000); Davids K, Araujo D, Correia V, Vilar L., How small-sided and conditioned games enhance acquisition of movement and decisionmaking skills, Exerc Sport Sci Rev, 41, pp. 154-161, (2013); Davies PL, Rose JD., Motor skills of typically developing adolescents: Awkwardness or improvement?, Phys Occup Ther Pediatr, 20, pp. 19-42, (2000); Davlin CD., Dynamic balance in high level athletes, Percept Mot Skills, 98, pp. 1171-1176, (2004); Dobosz J, Mayorga-Vega D, Viciana J., Percentile values of physical fitness levels among polish children aged 7 to 19 Years-a population-based study, Cent Eur J Public Health, 23, (2015); Ferrete C, Requena B, Suarez-Arrones L, de Villarreal ES., Effect of strength and high-intensity training on jumping, sprinting, and intermittent endurance performance in prepubertal soccer players, J Strength Cond Res, 28, pp. 413-422, (2014); 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Jullien H, Bisch C, Largoue t N, Manouvrier C, Carling CJ, Amiard V., Does a short period of lower limb strength training improve performance in field-based tests of running and agility in young professional soccer players?, J Strength Cond Res, 22, pp. 404-411, (2008); Knobloch K, Martin-Schmitt S, Gosling T, Jagodzinski M, Zeichen J, Krettek C., Prospective proprioceptive and coordinative training for injury reduction in elite female soccer [in German], Sportverletzung Sportschaden, 19, pp. 123-129, (2005); Kraemer WJ, French DN, Paxton NJ, Ha kkinen K, Volek JS, Sebastianelli WJ, Knuttgen HG., Changes in exercise performance and hormonal concentrations over a big ten soccer season in starters and non-starters, J Strength Cond Res, 18, pp. 121-128, (2004); Lemmink KA, Visscher C., Effect of intermittent exercise on multiple-choice reaction times of soccer players, Percept Mot Skills, 100, pp. 85-95, (2005); Ljach Wand, Witkowski Z., Characteristics and Importance of Coordination Motor Abilities in Soccer, Coordination Motor Abilities in Soccer [in Polish], pp. 7-68, (2004); Ljach Wand, Witkowski Z., Development and training of coordination skills in 11-to 19-year-old soccer players, Hum Physiol, 36, pp. 64-71, (2010); Ljach W, Witkowski Z, Gutnik B, Samovarov A, Nash D., Toward effective forecast of professionally important sensorimotor cognitive abilities of young soccer players, Percept Mot Skills, 114, pp. 485-506, (2012); Malliou P, Gioftsidou A, Pafis G, Beneka A, Godolias G., Proprioceptive training (balance exercises) reduces lower extremity injuries in young soccer players, J Back Musculoskelet Rehabil, 17, pp. 101-104, (2004); Matsuda S, Demura S, Uchiyama M., Centre of pressure sway characteristics during static one-legged stance of athletes from different sports, J Sport Sci, 26, pp. 775-779, (2008); Maughan R, Gleeson M, Greenhaff PL., Metabolic Adaptations to Training, Biochemistry of Exercise and Training, pp. 204-227, (1997); Miranda R, Antunes H, Pauli J, Puggina E, Da Silva A., Effects of 10-week soccer training program on anthropometric, psychological, technical skills and specific performance parameters in youth soccer players, Sci Sports, 28, pp. 81-87, (2013); Paterno MV, Myer GD, Ford KR, Hewett T., Neuromuscular training improves single-limb stability in young female athletes, J Orthop Sports Phys Ther, 34, pp. 305-316, (2004); Pedersen AV, Loras H, Norvang OP, Asplund J., Measuring soccer technique with easy-to-administer field tasks in female soccer players from four different competitive levels 1, 2, Percept Mot Skills, 119, pp. 961-970, (2014); Quatman CE, Ford KR, Myer GD, Paterno MV, Hewett TE., The effects of gender and pubertal status on generalized joint laxity in young athletes, J Sci Med Sport, 11, pp. 257-263, (2008); Rhea M, Alvar B, Burkett L, Ball S., A meta-analysis to determine the dose-response relationship for strength, Med Sci Sports Exerc, 35, pp. 456-464, (2003); Reilly Tand, Gilbourne D., Science and football: A review of applied research in the football codes, J Sports Sci, 21, pp. 693-705, (2003); Roca A, Ford PR, McRobert AP, Williams AM., Perceptualcognitive skills and their interaction as a function of task constraints in soccer, J Sport Exerc Psychol, 35, pp. 144-155, (2013); Russel M, Kingsley M., Influence of exercise on skill proficiency in soccer, Sports Med, 41, pp. 523-539, (2011); Schmidt RA, Wrisberg CA., Rules of Motion Control and Accuracy of Movements, Motor Learning and Performance: From Principles and Practice, pp. 159-186, (2009); Sommer M, Ronnqvist L., Improved motor-timing: Effects of synchronized metronome training on golf shot accuracy, J Sports Sci Med, 8, pp. 648-656, (2009); Sommer M., Effect of Timing Training in Golf and Soccer Players: Skill, Movement Organization, and Brain Activity, (2014); Sporis G, Jukic I, Milanovic L, Vucetic V., Reliability and factorial validity of agility tests for soccer players, J Strength Cond Res, 24, pp. 679-686, (2010); Tanaka H, Monahan KD, Seals DR., Age-predicted maximal revisited, J Am Coll Cardiol, 37, pp. 153-156, (2001); Tessitore A, Perroni F, Cortis C, Meeusen R, Lupo C, Capranica L., Coordination of soccer players during preseason training, J Strength Cond Res, 25, pp. 3059-3069, (2011); Travassos B, Araujo D, Davids K, Vilar L, Esteves P, Vanda C., Informational constraints shape emergent functional behaviours during performance of interceptive actions in team sports, Psychol Sport Exerc, 13, pp. 216-223, (2012); Vaeyens R, Lenoir M, Williams AM, Mazyn L, Philippaerts RM., The effects of task constraints on visual search behavior and decisionmaking skill in youth soccer players, J Sport Exerc Psychol, 29, (2007); Va nttinen T, Blomqvist M, Ha kkinen K., Development of body composition, hormone profile, physical fitness, general perceptual motor skills, soccer skills and on-the-ball performance in soccerspecific laboratory test among adolescent soccer players, J Sports Sci Med, 9, (2010); Viru A., Hormones in Adaptation to Physical Exercises (Hormonal Responses to Exercise), Adaptations in Sports Training, pp. 21-46, (1995); Ward P, Williams AM., Perceptual and cognitive skill development in soccer: The multidimensional nature of expert performance, J Sport Exerc Psychol, 25, pp. 93-111, (2003); Yarrow K, Brown P, Krakauer JW., Inside the brain of an elite athlete: The neural processes that support high achievement in sports, Nat Rev Neurosci, 10, pp. 585-596, (2009); Zachopoulou E, Derri V, Chatzopoulos D, Ellinoudis T., Application of Orff and Dalcroze activities in preschool children: Do they affect the level of rhythmic ability?, Phys Educ, 60, pp. 50-56, (2003)","","","NSCA National Strength and Conditioning Association","10648011","","","28368953","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-85066010056" "Nguyen A.-D.; Taylor J.B.; Wimbish T.G.; Keith J.L.; Ford K.R.","Nguyen, Anh-Dung (12805987900); Taylor, Jeffrey B. (55829673200); Wimbish, Taylor G. (57202868352); Keith, Jennifer L. (57202866894); Ford, Kevin R. (7102539333)","12805987900; 55829673200; 57202868352; 57202866894; 7102539333","Preferred hip strategy during landing reduces knee abduction moment in collegiate female soccer players","2018","Journal of Sport Rehabilitation","27","3","","213","217","4","8","10.1123/jsr.2016-0026","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85049625428&doi=10.1123%2fjsr.2016-0026&partnerID=40&md5=15f7da39f6756e57fd4c7560cfb10ca8","Dept of Athletic Training, School of Health Sciences, High Point University, High Point, NC, United States; Dept of Physical Therapy, School of Health Sciences, High Point University, High Point, NC, United States; Dept of Exercise Science, School of Health Sciences, High Point University, High Point, NC, United States","Nguyen A.-D., Dept of Athletic Training, School of Health Sciences, High Point University, High Point, NC, United States; Taylor J.B., Dept of Physical Therapy, School of Health Sciences, High Point University, High Point, NC, United States; Wimbish T.G., Dept of Exercise Science, School of Health Sciences, High Point University, High Point, NC, United States; Keith J.L., Dept of Athletic Training, School of Health Sciences, High Point University, High Point, NC, United States; Ford K.R., Dept of Physical Therapy, School of Health Sciences, High Point University, High Point, NC, United States","Context: Hip-focused interventions are aimed to decrease frontal plane knee loading related to anterior cruciate ligament injuries. Whether a preferred hip landing strategy decreases frontal plane knee loading is unknown. Objective: To determine if a preferred hip landing strategy during a drop vertical jump (DVJ) is utilized during a single-leg landing (SLL) task and whether differences in frontal plane knee loading are consistent between a DVJ and an SLL task. Design: Descriptive laboratory study. Setting: Research laboratory. Participants: Twenty-three collegiate, female soccer players. Main Outcome Measures: Participants were dichotomized into a hip (HIP; n = 9) or knee/ankle (KA; n = 14) strategy group based on the percentage distribution of each lower extremity joint relative to the summated moment (% distribution) during the DVJ. Separate 1-way analysis of variances examined the differences in joint-specific % distribution and external knee abduction moment between the HIP and KA groups. Results: The HIP group had significantly greater %distribution of hip moment and less%distribution of knee moment compared with the KA group during the DVJ and SLL. External knee abduction moment was also significantly less in the HIP group compared with the KA group during the DVJ. Conclusions: Female soccer athletes who land with a preferred hip strategy during a DVJ also land with a preferred hip strategy during an SLL. The preferred hip strategy also resulted in less external knee abduction moments during the DVJ. Clinical Relevance: Targeting the neuromuscular control of the hip extensor may be useful in reducing risk of noncontact anterior cruciate ligament injuries. © 2018 Human Kinetics, Inc.","ACL risk factors; Knee loading; Lower extremity joint distribution","Adolescent; Ankle Joint; Athletes; Biomechanical Phenomena; Female; Hip Joint; Humans; Knee Joint; Range of Motion, Articular; Soccer; Young Adult; adolescent; ankle; athlete; biomechanics; female; hip; human; joint characteristics and functions; knee; physiology; soccer; young adult","Mendiguchia J., Ford K.R., Quatman C.E., Alentorn-Geli E., Hewett T.E., Sex differences in proximal control of the knee joint, Sports Med, 41, 7, pp. 541-557, (2011); Decker M.J., Torry M.R., Wyland D.J., Sterett W.I., Richard Steadman J., Gender differences in lower extremity kinematics, kinetics and energy absorption during landing, Clin Biomech, 18, 7, pp. 662-669, (2003); Ford K.R., Myer G.D., Hewett T.E., Longitudinal effects of maturation on lower extremity joint stiffness in adolescent athletes, Am J SportsMed, 38, 9, pp. 1829-1837, (2010); Shultz S.J., Nguyen A.D., Leonard M.D., Schmitz R.J., Thigh strength and activation as predictors of knee biomechanics during a drop jump task, Med Sci Sports Exerc, 41, 4, pp. 857-866, (2009); Sigward S.M., Pollard C.D., Powers C.M., The influence of sex and maturation on landing biomechanics: implications for anterior cruciated ligament injury, Scand J Med Sci Sports, 22, 4, pp. 502-509, (2012); Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stopjump tasks, Am J Sports Med, 30, 2, pp. 261-267, (2002); Stearns K.M., Keim R.G., Powers C.M., Influence of relative hip and knee extensor muscle strength on landing biomechanics, Med Sci Sports Exerc, 45, 5, pp. 935-941, (2013); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Lawrence R.K., Kernozek T.W., Miller E.J., Torry M.R., Reuteman P., Influences of hip external rotation strength on knee mechanics during single-leg drop landings in females, Clin Biomech, 23, pp. 806-813, (2008); Pollard C.D., Sigward S.M., Powers C.M., Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments, Clin Biomech, 25, 2, pp. 142-146, (2010); Myer G.D., Chu D.A., Brent J.L., Hewett T.E., Trunk and hip control neuromuscular training for the prevention of knee joint injury, Clin Sports Med, 27, 3, pp. 425-448, (2008); Chaudhari A.M., Andriacchi T.P., The mechanical consequences of dynamic frontal plane limb alignment for non-contact ACL injury, J Biomech, 39, 2, pp. 330-338, (2006); Olsen O., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball, Am J Sports Med, 32, 4, pp. 1002-1012, (2004); Krosshaug T., Slauterbek J.R., Engebretsen L., Bahr R., Biomechanical analysis of anterior cruciate ligament injury mechanisms: threedimensional motion reconstruction from video sequences, Scand J Med Sci Sports, 17, pp. 508-519, (2007); Koga H., Nakamae A., Yosuke S., Et al., Mechanisms for noncontact anterior cruciate ligament injuries: knee joint kinematics in 10 injury situations from female team handball and basketball, Am J SportsMed, 38, pp. 2218-2225, (2010); Ford K.R., DiCesare C.A., Myer G.D., Hewett T.E., Real-time biofeedback to target risk of anterior cruciate ligament injury: a technical report for injury prevention and rehabilitation, J Sport Rehabil, (2015); de Leva P., Joint center longitudinal positions computed from a selected subset of Chandler's data, J Biomech, 29, 9, pp. 1231-1233, (1996); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, 10, pp. 1745-1750, (2003); Lephart S.M., Ferris C.M., Riemann B.L., Myers J.B., Fu F.H., Gender differences in strength and lower extremity kinematics during landing, Clin Orthop Relat Res, 401, pp. 162-169, (2002); Colby S.M., Hintermeister R.A., Torry M.R., Steadman J.R., Lower limb stability with ACL impairment, J Orthop Sports Phys Ther, 29, 8, pp. 444-454, (1999); Ford K.R., Myer G.D., Hewett T.E., Reliability of landing 3D motion analysis: implications for longitudinal analyses, Med Sci Sports Exerc, 39, 11, pp. 2021-2028, (2007); Ford K.R., Myer G.D., Melson P.G., Darnell S.C., Brunner H.I., Hewett T.E., Land-jump performance in patients with Juvenile Idiopathic Arthritis (JIA): a comparison to matched controls, Int J Rheumatol, 2009, pp. 1-5, (2009); Bisseling R.W., Hof A.L., Handling of impact forces in inverse dynamics, J Biomech, 39, 13, pp. 2438-2444, (2006); McCaw S.T., Gardner J.K., Stafford L.N., Torry M.R., Filtering ground reaction force data affects the calculation and interpretation of joint kinetics and energetics during drop landings, J Appl Biomech, 29, 6, pp. 804-809, (2013); Winter D.A., Biomechanics and Motor Control of Human Movement, (2005); Zhang S.N., Bates B.T., Dufek J.S., Contributions of lower extremity joints to energy dissipation during landings, Med Sci Sports Exerc, 32, 4, pp. 812-819, (2000); Devita P., Skelly W.A., Effect of landing stiffness on joint kinetics and energetics in the lower extremity, Med Sci Sports Exerc, 24, 1, pp. 108-115, (1992); Yeow C.H., Lee P.V., Goh J.C., An investigation of lower extremity energy dissipation strategies during single-leg and double-leg landing based on sagittal and frontal plane biomechanics, Hum Mov Sci, 30, 3, pp. 624-635, (2011); Stearns K.M., Powers C.M., Improvements in hip muscle performance result in increased use of the hip extensors and abductors during a landing task, Am J Sports Med, 42, 3, pp. 602-609, (2014); Powers C.M., The influence of abnormal hip mechanics on knee injury: a biomechanical perspective, J Orthop Sports Phys Ther, 40, 2, pp. 42-51, (2010); Blackburn J.T., Padua D.A., Sagittal-plane trunk position, landing forces, and quadriceps electromyographic activity, J Athl Train, 44, 2, pp. 174-179, (2009); Shimokochi Y., Ambegaonkar J.P., Meyer E.G., Lee S.Y., Shultz S.J., Changing sagittal plane body position during single-leg landings influences the risk of non-contact anterior cruciate ligament injury, Knee Surg Sports Traumatol Arthrosc, 21, 4, pp. 888-897, (2012)","A.-D. Nguyen; Dept of Athletic Training, School of Health Sciences, High Point University, High Point, United States; email: anguyen@highpoint.edu","","Human Kinetics Publishers Inc.","10566716","","JSRHE","28338388","English","J. Sport Rehabil.","Article","Final","","Scopus","2-s2.0-85049625428" "Fílter A.; Olivares Jabalera J.; Molina-Molina A.; Suárez-Arrones L.; Robles-Rodríguez J.; Dos’Santos T.; Loturco I.; Requena B.; Santalla A.","Fílter, Alberto (57211533760); Olivares Jabalera, Jesús (57219375591); Molina-Molina, Alejandro (56575067500); Suárez-Arrones, Luis (55266540600); Robles-Rodríguez, José (54684813600); Dos’Santos, Thomas (57170712800); Loturco, Irineu (38661433700); Requena, Bernardo (8268059700); Santalla, Alfredo (6701840562)","57211533760; 57219375591; 56575067500; 55266540600; 54684813600; 57170712800; 38661433700; 8268059700; 6701840562","Effect of ball inclusion on jump performance in soccer players: a biomechanical approach","2022","Science and Medicine in Football","6","2","","241","247","6","7","10.1080/24733938.2021.1915495","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104766356&doi=10.1080%2f24733938.2021.1915495&partnerID=40&md5=e133cdff1c8bb57f6fe1c760ddbe3255","FSI Sport Research Lab, Granada, Spain; Research Group Physical Activity, Health and Sport CTS-948, Pablo De Olavide University, Seville, Spain; Sport and Health University Research Institute (iMUDS), Department of Physical and Sports Education, University of Granada, Granada, Spain; San Jorge University, Campus Universitario, Villanueva de Gállego, Zaragoza, Spain; Performance Department, FC Basel, Basel, 1893, Switzerland; Faculty of Psychology and Sport, University of Huelva, Huelva, Spain; Department of Exercise and Sport Science, Musculoskeletal Science and sports medicine Research Centre, Manchester Metropolitan University, Manchester, United Kingdom; NAR–Nucleus of High Performance in Sport, Sao Paulo, Brazil; University of South Wales, Pontypridd Wales, United Kingdom; Department of Human Movement Sciences, Federal University of São Paulo, Santos, Brazil","Fílter A., FSI Sport Research Lab, Granada, Spain, Research Group Physical Activity, Health and Sport CTS-948, Pablo De Olavide University, Seville, Spain; Olivares Jabalera J., FSI Sport Research Lab, Granada, Spain, Sport and Health University Research Institute (iMUDS), Department of Physical and Sports Education, University of Granada, Granada, Spain; Molina-Molina A., Sport and Health University Research Institute (iMUDS), Department of Physical and Sports Education, University of Granada, Granada, Spain, San Jorge University, Campus Universitario, Villanueva de Gállego, Zaragoza, Spain; Suárez-Arrones L., FSI Sport Research Lab, Granada, Spain, Research Group Physical Activity, Health and Sport CTS-948, Pablo De Olavide University, Seville, Spain, San Jorge University, Campus Universitario, Villanueva de Gállego, Zaragoza, Spain; Robles-Rodríguez J., Performance Department, FC Basel, Basel, 1893, Switzerland; Dos’Santos T., FSI Sport Research Lab, Granada, Spain, Faculty of Psychology and Sport, University of Huelva, Huelva, Spain; Loturco I., FSI Sport Research Lab, Granada, Spain, Department of Exercise and Sport Science, Musculoskeletal Science and sports medicine Research Centre, Manchester Metropolitan University, Manchester, United Kingdom, NAR–Nucleus of High Performance in Sport, Sao Paulo, Brazil, University of South Wales, Pontypridd Wales, United Kingdom, Department of Human Movement Sciences, Federal University of São Paulo, Santos, Brazil; Requena B., FSI Sport Research Lab, Granada, Spain; Santalla A., FSI Sport Research Lab, Granada, Spain, Research Group Physical Activity, Health and Sport CTS-948, Pablo De Olavide University, Seville, Spain","Objective: In soccer, vertical jump means jumping toward a ball. Since no vertical jump test includes the ball as a reference element, the effect that the ball would have in a vertical jump test is unknown. The aim of this study was to examine the biomechanical differences between run-up vertical jump measurements without (Run-up Vertical Jump) and with ball inclusion (Heading Test). Methods: Twelve semi- and professional soccer players were recruited. Athletes performed both jump tests in a biomechanical laboratory, where kinetic and spatiotemporal variables were collected and compared using a Student’s dependent t-test for paired samples. Results: Overall, players performed a different jumping strategy during the heading test compared to the run-up vertical jump, exhibiting: 1) higher horizontal velocity during initial contact (+45.3%, P ≤ .001), 2) shorter contact time, greater rate of force development, and total impulse during push-off (+27.5%, +53%, and +10.6%, respectively, P ≤ .008), 3) higher CoM horizontal and resultant velocity during take-off (+76.1% and 20.5%, respectively, P ≤ .001), 4) better vertical jump performance (+4.3%, P ≤ .0001), and 5) larger body angle rotation during landing (+63.3%, P = .006), compared to run-up vertical jump (effect size: 0.78 to 3.7). Conclusion: In general, soccer players display greater vertical jump heights in heading test, which highlights the importance of including an overhead ball during soccer-specific jump tests. Coaches and practitioners are encouraged to assess, and perhaps develop, the jumping ability of soccer players using a suspended ball as a specific target. © 2021 Informa UK Limited, trading as Taylor & Francis Group.","performance; soccer; strength; testing; Vertical jump","Athletes; Athletic Performance; Humans; Kinetics; Rotation; Soccer; athlete; athletic performance; human; kinetics; rotation; soccer","Batterham A.M., Hopkins W.G., Making meaningful inferences about magnitudes, Int J Sports Physiol Perform, 1, 1, pp. 50-57, (2006); Bell A.L., Brand R.A., Pedersen D.R., Prediction of hip joint centre location from external landmarks, Hum Mov Sci, 8, 1, pp. 3-16, (1989); Bosco C., Komi P.V., Mechanical characteristics and fiber composition of human leg extensor muscles, Eur J Appl Physiol Occup Physiol, 41, 4, pp. 275-284, (1979); Butler R.J., Russell M.E., Queen R., Effect of soccer footwear on landing mechanics, Scand J Med Sci Sports, 24, 1, pp. 129-135, (2014); Caccese J.B., Buckley T.A., Tierney R.T., Rose W.C., Glutting J.J., Kaminski T.W., Sex and age differences in head acceleration during purposeful soccer heading, Res Sports Med, 26, 1, pp. 64-74, (2018); Space requirements of the seated operator. (Technical Report WADC-TR-55-159), Wright-patterson air force base, OH: aerospace medical research laboratory, (1955); DiCesare C.A., Kiefer A.W., Bonnette S.H., Myer G.D., Realistic soccer-specific virtual environment exposes high-risk lower extremity biomechanics, J Sport Rehabil, 13, pp. 1-7, (2011); Erkmen N., Evaluating the heading in professional soccer players by playing positions, J Strength Conditioning Res, 23, 6, pp. 1723-1728, (2009); Flanagan E.P., An examination of the slow and fast stretch shortening cycle, Symposium A Quarterly Journal In Modern Foreign Literatures, November, pp. 51-54, (2007); Haff G., Ruben R., Lider J., Twine C., Cormie P., A comparison of methods for determining the rate of force development during isometric midthigh clean pulls, J Strength Conditioning Res, 29, 2, (2011); Ham D.J., Knez W.L., Young W.B., A deterministic model of the vertical jump: implications for training, J Strength Conditioning Res, 21, 3, pp. 967-972, (2007); Hanavan E.P., A mathematical model of the human body, (1964); Harry J.R., Barker L.A., Mercer J.A., Dufek J.S., Vertical and horizontal impact force comparison during jump landings with and without rotation in NCAA division i male soccer players, J Strength Conditioning Res, 31, 7, pp. 1780-1786, (2017); Hori N., Newton R.U., Kawamori N., McGuigan M.R., Kraemer W.J., Nosaka K., Reliability of performance measurements derived from ground reaction force data during countermovement jump and the influence of sampling frequency, J Strength Conditioning Res, 23, 3, pp. 874-882, (2009); Kristensen L.B., Andersen T.B., Sorensen H., Soccer: optimizing segmental movement in the jumping header in soccer, Sports Biomech, 3, 2, pp. 195-208, (2004); Marcolin G., Petrone N., A method for the performance evaluation of jumping headers in soccer, ISBS Conference Proceedings, pp. 10-13, (2007); McLellan C., Lovell D.I., Gass G., The role of rate of force development on vertical jump performance, J Strength Conditioning Res, 25, 2, pp. 379-385, (2011); Mok K.M., Bahr R., Krosshaug T., The effect of overhead target on the lower limb biomechanics during a vertical drop jump test in elite female athletes, Scand J Med Sci Sports, 27, 2, pp. 161-166, (2017); Njororai W.W.S., Analysis of goals scored in the 2010 world cup soccer tournament held in South Africa, J Phys Educ Sport, 13, 1, pp. 6-13, (2013); Paoli A., Bianco A., Palma A., Marcolin G., Training the vertical jump to head the ball in soccer, Strength Cond J, 34, 3, pp. 80-85, (2012); Requena B., Garcia I., Requena F., Bressel E., Saez-saez De Villarreal E., Cronin J., Association between traditional standing vertical jumps and a soccer-specific vertical jump, Eur J Sport Sci, 14, pp. 37-41, (2014); Rodriguez-Rosell D., Mora-Custodio R., Franco-Marquez F., Yanez-Garcia J.M., Gonzalez-Badillo J.J., Traditional vs. Sport-specific vertical jump tests, J Strength Conditioning Res, 31, 1, pp. 196-206, (2017); Sarajarvi J., Volossovitch A., Almeida C.H., Analysis of headers in high-performance football: evidence from the English Premier League, Int J Perform Anal Sport, pp. 1-17, (2020); Shewchenko N., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football. Part 1: development of biomechanical methods to investigate head response, Br J Sports Med, 39, pp. 10-26, (2005); Slimani M., Paravlic A., Bragazzi N.L., Data concerning the effect of plyometric training on jump performance in soccer players: a meta-analysis, Data Brief, 15, pp. 324-334, (2017); Stojanovic E., Ristic V., McMaster D.T., Milanovic Z., Effect of plyometric training on vertical jump performance in female athletes: a systematic review and meta-analysis, Sports Med, 47, 5, pp. 975-986, (2017); Turner A.N., Jeffreys I., The stretch-shortening cycle: proposed mechanisms and methods for enhancement, Strength Cond J, 32, 4, pp. 87-99, (2010); Wagner H., Tilp M., Von Duvillard S.P.V., Mueller E., Kinematic analysis of volleyball spike jump, Int J Sports Med, 30, 10, pp. 760-765, (2009); Wulf G., Dufek J., Increased jump height with an external focus due to enhanced lower extremity joint kinetics, J Mot Behav, 41, 5, pp. 401-409, (2009); Wulf G., Zachry T., Granados C., Dufek J.S., Increases in jump-and-reach height through an external focus of attention, Int J Sports Sci Coach, 2, 3, pp. 275-284, (2007); Young W., Macdonald C., Heggen T., Fitzpatrick J., An evaluation of the specificity, validity and reliability of jumping tests, J Sports Med Phys Fitness, 37, 4, pp. 240-245, (1997); Young W., Wilson G., Byrne C., Relationship between strength qualities and performance in standing and run-up-vertical jumps, J Sports Med Phys Fitness, 39, 4, pp. 285-293, (1999); Zahalka F., Maly T., Mala L., Ejem M., Zawartka M., Kinematic analysis of volleyball attack in the net center with various types of take-off, J Hum Kinet, 58, 1, pp. 261-271, (2017)","A. Fílter; Cañada Rosal, Seville, 41439, Spain; email: albertofr_91@hotmail.com","","Taylor and Francis Ltd.","24733938","","","35475740","English","Sci. Med. Footb.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-85104766356" "Stiffler-Joachim M.R.; Wille C.; Kliethermes S.; Heiderscheit B.","Stiffler-Joachim, Mikel R. (57208238413); Wille, Christa (38962194700); Kliethermes, Stephanie (55097054400); Heiderscheit, Bryan (6603343381)","57208238413; 38962194700; 55097054400; 6603343381","Factors influencing base of gait during running: Consideration of sex, speed, kinematics, and anthropometrics","2020","Journal of Athletic Training","55","12","","1300","1306","6","8","10.4085/1062-6050-565-19","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097961594&doi=10.4085%2f1062-6050-565-19&partnerID=40&md5=5d85f290ef11a8fc47d4920d953ce94d","University of Wisconsin-Madison, United States","Stiffler-Joachim M.R., University of Wisconsin-Madison, United States; Wille C., University of Wisconsin-Madison, United States; Kliethermes S., University of Wisconsin-Madison, United States; Heiderscheit B., University of Wisconsin-Madison, United States","Context: A narrow base of gait (BOG), the mediolateral distance between the foot and the body's line of gravity at midstance, during running is a suggested cause of injuries such as iliotibial band syndrome and tibial stress injury. However, an understanding of modifiable and nonmodifiable factors that influence BOG is lacking, which limits the development of corrective strategies. Objective: To determine if BOG varies by sex and running speed and the influence of running kinematics and anthropometrics on BOG. Design: Cross-sectional study. Setting: Record review of routinely collected performance data from a National Collegiate Athletic Association Division I intercollegiate athletic program. Patients or Other Participants: A total of 166 Division I collegiate athletes (basketball, cross-country, football, soccer). Main Outcome Measure(s): Running biomechanics (N = 166) and dual-energy x-ray absorptiometry-derived anthropometric data (n = 68) were extracted. Running variables were BOG, step rate, stride length, foot-inclination angle, center-ofmass vertical displacement, heel-to-center of mass anteroposterior distance, and peak stance-phase angles: Hip flexion, hip adduction, pelvic drop, knee flexion, and ankle dorsiflexion. Extracted anthropometric variables were height; leg, femur, and tibia length; and anterior-superior iliac spine, hip-joint, and greater trochanter width. We calculated linear mixed-effects models to assess the influence of sex and running speed on BOG and identify the kinematic and anthropometric variables most associated with BOG. Results: A significant interaction between sex and running speed on BOG was observed, with males demonstrating a smaller BOG than females at faster speeds and BOG decreasing overall with speed. The kinematic measures most associated with BOG at preferred running speed were footinclination angle at initial contact and peak stance-phase hip adduction and ankle dorsiflexion. Anterior-superior iliac spine width was the anthropometric variable most associated with BOG at preferred running speed. Conclusions: Sex and running speed must be considered when determining the appropriateness of an individual's BOG. Additionally, BOG was associated with several potentially modifiable kinematic parameters. © 2020 by the National Athletic Trainers' Association, Inc.","Biomechanics; Crossover; Dualenergy x-ray absorptiometry; Step width","Adult; Anthropometry; Basketball; Biomechanical Phenomena; Cross-Sectional Studies; Female; Foot; Gait; Hip Joint; Humans; Knee Joint; Male; Pelvis; Running; Sex Factors; Tibia; adduction; adult; ankle; anthropometry; article; basketball; biomechanics; computer assisted tomography; cross-sectional study; dual energy X ray absorptiometry; female; femur length; football; greater trochanter; heel; human; iliac bone; kinematics; knee function; major clinical study; male; medical record review; outcome assessment; running; soccer; standing; step width; stride length; stride width; student athlete; tibia; velocity; anthropometry; biomechanics; foot; gait; hip; injury; knee; pelvis; physiology; running; sex factor","Cavanagh PR., The biomechanics of lower extremity action in distance running, Foot Ankle, 7, 4, pp. 197-217, (1987); Meardon SA, Campbell S, Derrick TR., Step width alters iliotibial band strain during running, Sports Biomech, 11, 4, pp. 464-472, (2012); Meardon SA, Derrick TR., Effect of step width manipulation on tibial stress during running, J Biomech, 47, 11, pp. 2738-2744, (2014); Orendurff MS, Segal AD, Klute GK, Berge JS, Rohr ES, Kadel NJ., The effect of walking speed on center of mass displacement, J Rehabil Res Dev, 41, 6A, pp. 829-834, (2004); Stimpson KH, Heitkamp LN, Horne JS, Dean JC., Effects of walking speed on the step-by-step control of step width, J Biomech, 68, pp. 78-83, (2018); Stiffler-Joachim MR, Wille CM, Kliethermes SA, Johnston W, Heiderscheit BC., Foot angle and loading rate during running demonstrate a nonlinear relationship, Med Sci Sports Exerc, 51, 10, pp. 2067-2072, (2019); Brindle RA, Milner CE, Zhang S, Fitzhugh EC., Changing step width alters lower extremity biomechanics during running, Gait Posture, 39, 1, pp. 124-128, (2014); Heiderscheit BC, Chumanov ES, Michalski MP, Wille CM, Ryan MB., Effects of step rate manipulation on joint mechanics during running, Med Sci Sports Exerc, 43, 2, pp. 296-302, (2011); de Leva P., Adjustments to Zatsiorsky-Seluyanov's segment inertia parameters, J Biomech, 29, 9, pp. 1223-1230, (1996); Lu TW, O'Connor JJ., Bone position estimation from skin marker co-ordinates using global optimisation with joint constraints, J Biomech, 32, 2, pp. 129-134, (1999); LaVelle M., Natural selection and developmental sexual variation in the human pelvis, Am J Phys Anthropol, 98, 1, pp. 59-72, (1995); Pipkin A, Kotecki K, Hetzel S, Heiderscheit B., Reliability of a qualitative video analysis for running, J Orthop Sports Phys Ther, 46, 7, pp. 556-561, (2016)","B. Heiderscheit; University of Wisconsin-Madison, Madison, 1685 Highland Avenue, 53705, United States; email: heiderscheit@ortho.wisc.edu","","National Athletic Trainers' Association Inc.","10626050","","JATTE","33064810","English","J. Athl. Train.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85097961594" "Murtagh C.F.; Stubbs M.; Vanrenterghem J.; O’Boyle A.; Morgans R.; Drust B.; Erskine R.M.","Murtagh, Conall F. (56536788600); Stubbs, Michael (57202331070); Vanrenterghem, Jos (6506257376); O’Boyle, Andrew (57202339226); Morgans, Ryland (56024877200); Drust, Barry (8076138400); Erskine, Robert M. (26633733900)","56536788600; 57202331070; 6506257376; 57202339226; 56024877200; 8076138400; 26633733900","Patellar tendon properties distinguish elite from non-elite soccer players and are related to peak horizontal but not vertical power","2018","European Journal of Applied Physiology","118","8","","1737","1749","12","10","10.1007/s00421-018-3905-0","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85047904954&doi=10.1007%2fs00421-018-3905-0&partnerID=40&md5=22f4a51054be36bd87773d591c1e008b","School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, L3 3AF, United Kingdom; Liverpool Football Club, Liverpool, United Kingdom; Department of Rehabilitation Sciences, KU Leuven, University of Leuven, Leuven, 3000, Belgium; Football Association of Wales, Cardiff, United Kingdom; Institute of Sport, Exercise and Health, University College London, London, United Kingdom","Murtagh C.F., School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, L3 3AF, United Kingdom, Liverpool Football Club, Liverpool, United Kingdom; Stubbs M., School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, L3 3AF, United Kingdom; Vanrenterghem J., School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, L3 3AF, United Kingdom, Department of Rehabilitation Sciences, KU Leuven, University of Leuven, Leuven, 3000, Belgium; O’Boyle A., School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, L3 3AF, United Kingdom, Liverpool Football Club, Liverpool, United Kingdom; Morgans R., Football Association of Wales, Cardiff, United Kingdom; Drust B., School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, L3 3AF, United Kingdom, Liverpool Football Club, Liverpool, United Kingdom; Erskine R.M., School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, L3 3AF, United Kingdom, Institute of Sport, Exercise and Health, University College London, London, United Kingdom","Purpose: To investigate potential differences in patellar tendon properties between elite and non-elite soccer players, and to establish whether tendon properties were related to power assessed during unilateral jumps performed in different directions. Methods: Elite (n = 16; age 18.1 ± 1.0 years) and non-elite (n = 13; age 22.3 ± 2.7 years) soccer players performed vertical, horizontal-forward and medial unilateral countermovement jumps (CMJs) on a force plate. Patellar tendon (PT) cross-sectional area, elongation, strain, stiffness, and Young’s modulus (measured at the highest common force interval) were assessed with ultrasonography and isokinetic dynamometry. Results: Elite demonstrated greater PT elongation (6.83 ± 1.87 vs. 4.92 ± 1.88 mm, P = 0.011) and strain (11.73 ± 3.25 vs. 8.38 ± 3.06%, P = 0.009) than non-elite soccer players. Projectile range and peak horizontal power during horizontal-forward CMJ correlated positively with tendon elongation (r = 0.657 and 0.693, P < 0.001) but inversely with Young’s modulus (r = − 0.376 and − 0.402; P = 0.044 and 0.031). Peak medial power during medial CMJ correlated positively with tendon elongation (r = 0.658, P < 0.001) but inversely with tendon stiffness (r = − 0.368, P = 0.050). Conclusions: Not only does a more compliant patellar tendon appear to be an indicator of elite soccer playing status but it may also facilitate unilateral horizontal-forward and medial, but not vertical CMJ performance. These findings should be considered when prescribing talent selection and development protocols related to direction-specific power in elite soccer players. © 2018, The Author(s).","Countermovement jump; Elongation; Patellar tendon; Stiffness; Strain; Unilateral; Young’s modulus","Adolescent; Athletes; Athletic Performance; Biomechanical Phenomena; Elastic Modulus; Humans; Male; Muscle, Skeletal; Patellar Ligament; Soccer; Young Adult; adolescent; athlete; athletic performance; biomechanics; classification; human; male; patellar ligament; physiology; skeletal muscle; soccer; young adult; Young modulus","Bojsen-Moller J., Magnusson S.P., Rasmussen L.R., Kjaer M., Aagaard P., Muscle performance during maximal isometric and dynamic contractions is influenced by the stiffness of the tendinous structures, J Appl Physiol, 99, 3, pp. 986-994, (2005); Bradley P.S., Di Mascio M., Peart D., Olsen P., Sheldon B., High-intensity activity profiles of elite soccer players at different performance levels, J Strength Cond Res, 24, 9, pp. 2343-2351, (2010); 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Murtagh; Liverpool Football Club, Liverpool, United Kingdom; email: C.F.Murtagh@ljmu.ac.uk","","Springer Verlag","14396319","","EJAPF","29860681","English","Eur. J. Appl. Physiol.","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85047904954" "Auger J.; Markel J.; Pecoski D.D.; Leiva-Molano N.; Talavage T.M.; Leverenz L.; Shen F.; Nauman E.A.","Auger, Joshua (57219535893); Markel, Justin (57205608691); Pecoski, Dimitri D. (57219529998); Leiva-Molano, Nicolas (57219108024); Talavage, Thomas M. (6701846437); Leverenz, Larry (6507789912); Shen, Francis (7201583080); Nauman, Eric A. (7005589370)","57219535893; 57205608691; 57219529998; 57219108024; 6701846437; 6507789912; 7201583080; 7005589370","Factors affecting peak impact force during soccer headers and implications for the mitigation of head injuries","2020","PLoS ONE","15","10 October 2020","e0240162","","","","10","10.1371/journal.pone.0240162","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85093650872&doi=10.1371%2fjournal.pone.0240162&partnerID=40&md5=c3f357be3da797c8bd1ec95ca165352c","School of Mechanical Engineering, Purdue University, West Lafayette, IN, United States; Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, United States; School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, United States; Department of Health and Kinesiology, Purdue University, West Lafayette, IN, United States; University of Minnesota Law School, University of Minnesota, Minneapolis, MN, United States; Department of Basic Medical Sciences, Purdue University, West Lafayette, IN, United States","Auger J., School of Mechanical Engineering, Purdue University, West Lafayette, IN, United States; Markel J., School of Mechanical Engineering, Purdue University, West Lafayette, IN, United States; Pecoski D.D., Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, United States; Leiva-Molano N., Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, United States; Talavage T.M., Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, United States, School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, United States; Leverenz L., Department of Health and Kinesiology, Purdue University, West Lafayette, IN, United States; Shen F., University of Minnesota Law School, University of Minnesota, Minneapolis, MN, United States; Nauman E.A., School of Mechanical Engineering, Purdue University, West Lafayette, IN, United States, Department of Health and Kinesiology, Purdue University, West Lafayette, IN, United States, Department of Basic Medical Sciences, Purdue University, West Lafayette, IN, United States","It has been documented that up to 22% of all soccer injuries are concussions. This is in part due to players purposely using their head to direct the ball during play. To provide a more complete understanding of head trauma in soccer athletes, this study characterized the effects of four soccer ball characteristics (size, inflation pressure, mass, velocity) on the resulting peak impact force as it relates to the potential for incurring neurophysiological changes. A total of six hundred trials were performed on size 4 and 5 soccer balls as well as a novel lightweight soccer ball. Impact force was measured with a force plate and ball velocity was determined using motion capture. These data were used, in conjunction with dimensional analysis to relate impact force to ball size, mass, velocity, and pressure. Reasonable reductions in allowable ball parameters resulted in a 19.7% decrease in peak impact force. Adjustments to ball parameters could reduce a high cumulative peak translational acceleration soccer athlete down into a previously defined safer low loading range. In addition, it was noted that water absorption by soccer balls can result in masses that substantially increase impact force and quickly surpass the NCAA weight limit for game play. Additional research is required to determine whether varying soccer ball characteristics will enable soccer players to avoid persistent neurophysiological deficits or what additional interventions may be necessary and the legal implications of these data are discussed. © 2020 Auger et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.","","Acceleration; Athletic Injuries; Biomechanical Phenomena; Brain Concussion; Humans; Models, Biological; Soccer; Stress, Mechanical; adolescent; Article; force; head injury; human; mass; motion; pressure; risk factor; risk reduction; sensitivity analysis; soccer; soccer player; velocity; water absorption; acceleration; adverse event; biological model; biomechanics; brain concussion; injury; mechanical stress; soccer; sport injury","Covassin T, Swanik CB, Sachs ML., Epidemiological Considerations of Concussions Among Intercollegiate Athletes, Applied Neuropsychology, 10, 1, pp. 12-22, (2003); Barnes BC, Cooper L, Kirkendall DT, McDermott TP, Jordan BD, Garrett WE., Concussion History in Elite Male and Female Soccer Players, The American Journal of Sports Medicine, 26, 3, pp. 433-438, (1998); Rodrigues AC, Lasmar RP, Caramelli P., Effects of Soccer Heading on Brain Structure and Function, Frontiers in Neurology, 7, (2016); Fifa Big Count 2006: 270 Million People Active in Football, (2007); Levy ML, Kasasbeh AS, Baird LC, Amene C, Skeen J, Marshall L., Concussions in Soccer: A Current Understanding, World Neurosurgery, 78, 5, pp. 535-544, (2012); Delaney JS, Lacroix VJ, Leclerc S, Johnston KM., Concussions Among University Football and Soccer Players, Clinical Journal of Sport Medicine, 12, 6, pp. 331-338, (2002); Delaney JS., Head Injuries Presenting to Emergency Departments in the United States from 1990 to 1999 for Ice Hockey, Soccer, and Football, Clinical Journal of Sport Medicine, 14, 2, pp. 80-87, (2004); Gessel LM, Fields SK, Collins CL, Dick RW, Comstock RD., Concussions Among United States High School and Collegiate Athletes, Journal of Athletic Training, 42, 4, pp. 495-503, (2007); Kelly JP, Rosenberg JH., Diagnosis and Management of Concussion in Sports, Neurology, 48, 3, pp. 575-580, (1997); Taha Z, Hassan MHA, Hasanuddin I., Analytical Modelling of Soccer Heading, Sadhana, 40, 5, pp. 1567-1578, (2015); Koerte IK, Nichols E, Tripodis Y, Schultz V, Lehner S, Igbinoba R, Et al., Impaired Cognitive Performance in Youth Athletes Exposed to Repetitive Head Impacts, J Neurotrauma, 34, 16, pp. 2389-2395, (2017); Talavage TM, Nauman EA, Leverenz LJ., The Role of Medical Imaging in the Recharacterization of Mild Traumatic Brain Injury Using Youth Sports as a Laboratory, Frontiers in Neurology, 6, (2016); Bailes JE, Petraglia AL, Omalu BI, Nauman E, Talavage T., Role of Subconcussion in Repetitive Mild Traumatic Brain Injury, Journal of Neurosurgery, 119, 5, pp. 1235-1245, (2013); Matser EJT, Kessels AG, Lezak MD, Jordan BD, Troost J., Neuropsychological Impairment in Amateur Soccer Players, JAMA, 282, 10, pp. 971-973, (1999); O'Kane JW, Spieker A, Levy MR, Neradilek M, Polissar NL, Schiff MA., Concussion Among Female Middle-School Soccer Players, JAMA Pediatrics, 168, 3, pp. 258-264, (2014); 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McCuen E, Svaldi D, Breedlove K, Kraz N, Cummiskey B, Breedlove EL, Et al., Collegiate Women's Soccer Players Suffer Greater Cumulative Head Impacts Than Their High School Counterparts, Journal of Biomechanics, 48, 13, pp. 3720-3723, (2015); Svaldi DO, Joshi C, McCuen EC, Music JP, Hannemann R, Leverenz LJ, Et al., Accumulation of high magnitude acceleration events predicts cerebrovascular reactivity changes in female high school soccer athletes, Brain Imaging and Behavior; Queen RM, Weinhold PS, Kirkendall DT, Yu B., Theoretical Study of the Effect of Ball Properties on Impact Force in Soccer Heading, Medicine & Science in Sports & Exercise, 35, 12, pp. 2069-2076, (2003); Naunheim RS, Bayly PV, Standeven J, Neubauer JS, Lewis LM, Genin GM., Linear and Angular Head Accelerations during Heading of a Soccer Ball, Medicine & Science in Sports & Exercise, 35, 8, pp. 1406-1412, (2003); Broglio SP, Ju YY, Broglio MD, Sell TC., The Efficacy of Soccer Headgear, Journal of Athletic Training, 38, 3, pp. 220-224, (2003); Andres K, Ferguson A., NCAA 2016 and 2017 Men's and Women's Soccer Rules, (2016); Laws Of The Game 2015/2016, (2015); Soccer USY., Rules of the Game, (2017); Barenblatt GI., Scaling. 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Nauman; School of Mechanical Engineering, Purdue University, West Lafayette, United States; email: enauman@purdue.edu","","Public Library of Science","19326203","","POLNC","33064732","English","PLoS ONE","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85093650872" "Towlson C.; Abt G.; Barrett S.; Cumming S.; Hunter F.; Hamilton A.; Lowthorpe A.; Goncalves B.; Corsie M.; Swinton P.","Towlson, Christopher (23996181100); Abt, Grant (6603206187); Barrett, Steve (55390945900); Cumming, Sean (7004353592); Hunter, Frances (56464821800); Hamilton, Ally (57221614173); Lowthorpe, Alex (57391836400); Goncalves, Bruno (55950048800); Corsie, Martin (57391447400); Swinton, Paul (36786240800)","23996181100; 6603206187; 55390945900; 7004353592; 56464821800; 57221614173; 57391836400; 55950048800; 57391447400; 36786240800","The effect of bio-banding on academy soccer player passing networks: Implications of relative pitch size","2021","PLoS ONE","16","12 December","e0260867","","","","8","10.1371/journal.pone.0260867","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122000770&doi=10.1371%2fjournal.pone.0260867&partnerID=40&md5=2908edb43d0eb00bffeb4581ed1f6da4","Department of Sport, Health and Exercise Science, University of Hull, Hull, United Kingdom; Playermaker, London, United Kingdom; Department for Health, University of Bath, Bath, United Kingdom; Middlesbrough Football Club, Middlesbrough, United Kingdom; Hull City Football Club, Hull, United Kingdom; Departamento de Desporto e Saúde, Escola de Saúde e Desenvolvimento Humano, Universidade de Évora, Évora, Portugal; Comprehensive Health Research Centre (CHRC), Universidade de Évora, Évora, Portugal; Portugal Football School, Portuguese Football Federation, Oeiras, Portugal; School of Health Sciences, Robert Gordon University, Aberdeen, United Kingdom","Towlson C., Department of Sport, Health and Exercise Science, University of Hull, Hull, United Kingdom; Abt G., Department of Sport, Health and Exercise Science, University of Hull, Hull, United Kingdom; Barrett S., Playermaker, London, United Kingdom; Cumming S., Department for Health, University of Bath, Bath, United Kingdom; Hunter F., Middlesbrough Football Club, Middlesbrough, United Kingdom; Hamilton A., Hull City Football Club, Hull, United Kingdom; Lowthorpe A., Department of Sport, Health and Exercise Science, University of Hull, Hull, United Kingdom; Goncalves B., Departamento de Desporto e Saúde, Escola de Saúde e Desenvolvimento Humano, Universidade de Évora, Évora, Portugal, Comprehensive Health Research Centre (CHRC), Universidade de Évora, Évora, Portugal, Portugal Football School, Portuguese Football Federation, Oeiras, Portugal; Corsie M., School of Health Sciences, Robert Gordon University, Aberdeen, United Kingdom; Swinton P., School of Health Sciences, Robert Gordon University, Aberdeen, United Kingdom","The primary aims of this study were to examine the effects of bio-banding players on passing networks created during 4v4 small-sided games (SSGs), while also examining the interaction of pitch size using passing network analysis compared to a coach-based scoring system of player performance. Using a repeated measures design, 32 players from two English Championship soccer clubs contested mixed maturity and bio-banded SSGs. Each week, a different pitch size was used: Week 1) small (36.1 m2 per player); week 2) medium (72.0 m2 per player); week 3) large (108.8 m2 per player); and week 4) expansive (144.50 m2 per player). All players contested 12 maturity (mis)matched and 12 mixed maturity SSGs. Technical-tactical outcome measures were collected automatically using a foot-mounted device containing an inertial measurement unit (IMU) and the Game Technical Scoring Chart (GTSC) was used to subjectively quantify the technical performance of players. Passing data collected from the IMUs were used to construct passing networks. Mixed effect models were used with statistical inferences made using generalized likelihood ratio tests, accompanied by Cohen’s local f2 to quantify the effect magnitude of each independent variable (game type, pitch size and maturation). Consistent trends were identified with mean values for all passing network and coach-based scoring metrics indicating better performance and more effective collective behaviours for early compared with late maturation players. Network metrics established differences (f2 = 0.00 to 0.05) primarily for early maturation players indicating that they became more integral to passing and team dynamics when playing in a mixed-maturation team. However, coach-based scoring was unable to identify differences across bio-banding game types (f2 = 0.00 to 0.02). Pitch size had the largest effect on metrics captured at the team level (f2 = 0.24 to 0.27) with smaller pitch areas leading to increased technical actions. The results of this study suggest that the use of passing networks may provide additional insight into the effects of interventions such as bio-banding and that the number of early-maturing players should be considered when using mixed-maturity playing formats to help to minimize late-maturing players over-relying on their early-maturing counterparts during match-play. © 2021 Towlson et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.","","Academies and Institutes; Adolescent; Adolescent Development; Athletic Performance; Competitive Behavior; Humans; Male; Psychomotor Performance; Soccer; Task Performance and Analysis; Youth Sports; Article; athletic performance; biobanding; biomechanics; child; group dynamics; human; human experiment; male; mathematical phenomena; maturation; network analysis; normal human; passing network; physical parameters; pitch size; scoring system; soccer; soccer player; adolescent; adolescent development; competitive behavior; organization; physiology; psychology; psychomotor performance; task performance; youth sport","Malina RM, Rogol AD, Cumming SP, Coelho e Silva MJ, Figueiredo AJ., Biological maturation of youth athletes: assessment and implications, Br J Sports Med, 49, 13, pp. 852-859, (2015); 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Marris J, Barrett S, Abt G, Towlson C., Quantifying Technical Actions in Professional Soccer Using Foot-Mounted Inertial Measurement Units, Science and Medicine in Football, (2021); Wiig AS, Haland EM, Stalhane M, Hvattum LM., Analyzing passing networks in association football based on the difficulty, risk, and potential of passes, International Journal of Computer Science in Sport, 18, pp. 44-68, (2019); Nakagawa S, Schielzeth H., The mean strikes back: mean-variance relationships and heteroscedasticity, Trends Ecol Evol, 27, 9, pp. 474-475, (2012); Bakeman R., Recommended effect size statistics for repeated measures designs, Behav Res Methods, 37, 3, pp. 379-384, (2005); Bates D, Machler M, Bolker B, Walker S., Fitting linear mixed-effects models using lme4; Towlson C, MacMaster C, Goncalves B, Sampaio J, Toner J, MacFarlane N, Et al., The effect of bio-banding on technical and tactical indicators of talent identification in academy soccer players, Jornal of Science and Medicine in Football, (2021); Martone D, Giacobbe M, Capobianco A, Imperlini E, Mancini A, Capasso M, Et al., Exercise Intensity and Technical Demands of Small-Sided Soccer Games for Under-12 and Under-14 Players: Effect of Area per Player, J Strength Cond Res, 31, 6, pp. 1486-1492, (2017); Moreira PED, Barbosa GF, Murta CDCF, Perez Morales JC, Bredt SDGT, Praca GM, Et al., Network analysis and tactical behaviour in soccer small-sided and conditioned games: influence of absolute and relative playing areas on different age categories, International Journal of Performance Analysis in Sport, 20, 1, pp. 64-77, (2020); Parr J, Winwood K, Hodson-Tole E, Deconinck FJA, Parry L, Hill JP, Et al., Predicting the timing of the peak of the pubertal growth spurt in elite youth soccer players: evaluation of methods, Ann Hum Biol, pp. 1-23, (2020)","C. Towlson; Department of Sport, Health and Exercise Science, University of Hull, Hull, United Kingdom; email: c.towlson@hull.ac.uk","","Public Library of Science","19326203","","POLNC","34914749","English","PLoS ONE","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85122000770" "Rath M.E.; Stearne D.J.; Walker C.R.; Cox J.G.","Rath, Meghan E. (58434052300); Stearne, David J. (10239943000); Walker, Cameron R. (57189712538); Cox, Jaime G. (57206138670)","58434052300; 10239943000; 57189712538; 57206138670","Effect of foot type on knee valgus, ground reaction force, and hip muscle activation in female soccer players","2016","Journal of Sports Medicine and Physical Fitness","56","5","","546","553","7","10","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84974850998&partnerID=40&md5=3f8150446b5109cc7c570ce61077c5a5","Department of Kinesiology, West Chester University, 855 South New Street, West Chester, 19383, PA, United States","Rath M.E., Department of Kinesiology, West Chester University, 855 South New Street, West Chester, 19383, PA, United States; Stearne D.J., Department of Kinesiology, West Chester University, 855 South New Street, West Chester, 19383, PA, United States; Walker C.R., Department of Kinesiology, West Chester University, 855 South New Street, West Chester, 19383, PA, United States; Cox J.G., Department of Kinesiology, West Chester University, 855 South New Street, West Chester, 19383, PA, United States","BACKGROUND: The purpose of this study was to determine the degree to which subtalar joint pronation resulting from a supple planus foot affects knee alignment, hip muscle activation and ground reaction force attenuation in female athletes during a broad jump-to-cut maneuver. METHODS: Twelve National Collegiate Athletic Association (NCAA) Division II female soccer players (age=19.4± 1.4 years, height=1.64±0.05m, mass=64.10±4.8 kg) were identified as having either supple planus (SP) or rigid feet (RF). Participants completed three broad jump-to-cut trials onto a force plate while EMG and motion data were collected. Muscle activation levels (percentage of maximal voluntary contraction [%MVC]) in the gluteus maximus, gluteus medius, biceps femoris, and rectus femoris were calculated, and peak vertical and medial shear force, rate of loading, and valgus angle were collected for each trial. RESULTS: Mann-Whitney U tests revealed no statistical significance between foot-type groups, however, effect size statistics revealed practical significance for between-group %MVC biceps femoris (d=1.107), %MVC gluteus maximus (d=1.069), and vertical ground reaction force (d=l.061). CONCLUSIONS: Athletes with a SP foot type may experience decreased hip muscle activation associated with increased vertical ground reaction force during a broad jump-to-cut maneuver. This might result in reduced dynamic stability and neuromuscular control during deceleration, potentially increasing the risk of non-contact ACL injury in female soccer players. © 2015 Edizioni Minerva Medica.","Anterior cruciate ligament; Electromyography; Shear strength","Adult; Athletes; Athletic Performance; Biomechanical Phenomena; Electromyography; Female; Foot; Hip; Humans; Knee Joint; Muscle Strength; Muscle, Skeletal; Postural Balance; Quadriceps Muscle; Range of Motion, Articular; Soccer; adult; athlete; athletic performance; biomechanics; body equilibrium; electromyography; female; foot; hip; human; joint characteristics and functions; knee; muscle strength; physiology; quadriceps femoris muscle; skeletal muscle; soccer","Ford K., Myer G., Hewett T., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, pp. 1745-1750, (2003); Ireland M.L., Anterior cruciate ligament injury in female athletes: Epidemiology, J Athl Train, 34, pp. 150-154, (1999); Voskanian N., ACL injury prevention in female athletes: Review of the literature and practical considerations in implementing an ACL prevention program, Curr Rev Musculoskelet Med, 6, pp. 158-163, (2013); Hertel J., Dorfman J., Braham R., Lower extremity malalignments and anterior cruciate ligament injury history, J Sports Sci Med, 3, pp. 220-225, (2004); Shultz S., Carcia C., Gansneder B., Perrin D., The independent and interactive effects of navicular drop and quadriceps angle on neuromuscular responses to a weight-bearing perturbation, J Athl Train, 41, pp. 251-259, (2006); Coplan J., Rotational motion of the knee: A comparison of normal and pronating subjects, J Orthop Sports Phys Ther, 10, pp. 366-369, (1989); Russell K., Palmieri R., Zinder S., Ingersoll C., Sex differences in valgus knee angle during a single-leg drop jump, J Athl Train, 41, pp. 166-171, (2006); Hollman J.H., Ginos B.E., Kozuchowski J., Vaughn A.S., Krause D.A., Youdas J.W., Relationships between knee valgus, hip-muscle strength, and hip-muscle recruitment during a single-limb step-down, J Sport Rehabil, 18, pp. 104-117, (2009); Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stopjump tasks, Am J Sport Med, 30, pp. 261-267, (2002); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech, 16, pp. 438-445, (2001); Zeller B.L., McCrory J.L., Kibler W.B., Uhl T.L., Differences in kinematics and electromyographic activity between men and women during the single-legged squat, Am J Sport Med, 31, pp. 449-456, (2003); Willson J.D., Petrowitz I., Butler R.J., Kernozek T.W., Male and female gluteal muscle activity and lower extremity kinematics during running, Clin Biomech, 27, pp. 1052-1057, (2010); Winter D.A., Rau G., Kadefors R., Broman H., Deluca C.J., Units, Terms, and Standards in the Reporting of EMG Research, International Society of Electrophysiology and Kinesiology Ad Hoc Committee, (1980); Willson J.D., Ireland M.L., Davis I., Core strength and lower extremity alignment during single leg squats, Med Sci Sports Exerc, 38, pp. 945-952, (2006); Munro A., Herrington L., Carolan M., Reliability of 2-dimensional video assessment of frontal-plane dynamic knee valgus during common athletic screening tasks, J Sport Rehabil, 12, pp. 7-11, (2012); Mueller M.J., Host J.V., Norton B.J., Navicular drop test as a composite measure of excessive pronation, J Am Podiatr Med Assoc, 8, pp. 198-202, (1993); Seigel S., Castellan N.J., Nonparametric Statistics for the Behavioral Sciences, (1988); Conover W.J., Practical Nonparametric Statistics. Second Edition, (1980); Dexter F., Analysis of statistical tests to compare doses of analgesics among groups, Anesthesiology, 81, pp. 610-615, (1994); Zimmerman D.W., Zumbo B.D., Rank transformations and the power of the student t test and Welch t test for non-normal populations with unequal variances, Can J Exp Psychol, 47, pp. 523-539, (1993); Donatelli R., Abnormal biomechanics of the foot and ankle, J Orthop Sports Phys the, 9, pp. 11-16, (1987); Hollman J.H., Galardi C.M., Lin I.H., Voth B.C., Whitmarsh C.L., Frontal and transverse plane hip kinematics and gluteus maximus recruitment correlate with frontal plane knee kinematics during single-leg squat tests in women, Clin Biomech, 29, pp. 468-474, (2014); Jenkins W., Killian C., Williams D.S., Loudon J., Raedeke S., Anterior cruciate ligament injury in female and male athletes: The relationship between foot structure and injury, J Am Podiatr Med Assoc, 97, pp. 371-376, (2007); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Lephart S.M., Ferris C.M., Riemann B.L., Myers J.B., Fu F.H., Gender differences in strength and lower extremity kinematics during landing, Clin Orthop 2002, 401, pp. 162-169, (2002); Joseph M.F., Rahl M., Sheehan J., MacDougall B., Horn E., Denegar C.R., Trojian T.H., Et al., Timing of lower extremity frontal plane motion differs between female and male athletes during a landing task, Am J Sports Med, 39, pp. 1517-1521, (2011); Hintermann B., Nigg B., Pronation in runners: Implications for injuries, Am J Sports Med, 26, pp. 169-176, (1998); Tiberio D., The effect of excessive subtalar joint pronation on patellofemoral mechanics: A theoretical model, J Orthop Sports Phys Ther, 9, pp. 160-165, (1987); Brauner T., Thorsten S., Gras N., Milani T., Small changes in the varus alignment of running shoes allow gradual pronation control, Footwear Science, 2, pp. 103-110, (2009); Rattanaprasert U., Smith R., Sullivan M., Gilleard W., Three-dimensional kinematics of the forefoot, rearfoot, and leg without the function of tibialis posterior in comparison with normals during stance phase of walking, Clin Biomech, 14, pp. 14-23, (1999); Williams D.S., Arch structure and injury patterns in runners, Clin Biomech, 16, pp. 341-347, (2001); Powers C.M., The influence of altered lower extremity kinematics on patellofemoral joint dysfunction: A theoretical perspective, J Orthop Sports Phys Ther, 33, pp. 639-646, (2003); Chaudhari A.M., Andriacchi T.P., The mechanical consequences of dynamic frontal plane limb alignment for non-contact ACL injury, J Biomech, 39, (2006); Homan K.J., Norcross M.F., Goerger B.M., Prentice W.E., Blackburn J.T., The influence of hip strength on gluteal activity and lower extremity kinematics, J Electromyogr Kinesiol, 23, pp. 411-415, (2013)","D.J. Stearne; Department of Kinesiology, West Chester University, West Chester, 855 South New Street, 19383, United States; email: dsteame@wcupa.edu","","Edizioni Minerva Medica","00224707","","JMPFA","25781215","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-84974850998" "Majid F.; Bader D.L.","Majid, F. (6603098548); Bader, D.L. (7102450490)","6603098548; 7102450490","A biomechanical analysis of the plantar surface of soccer shoes","1993","Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine","207","2","","93","101","8","9","10.1243/PIME_PROC_1993_207_276_02","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0027765234&doi=10.1243%2fPIME_PROC_1993_207_276_02&partnerID=40&md5=b3027f1140ea434f2fef826463980e63","Department of Materials, Queen Mary and Westfield College, University of London","Majid F., Department of Materials, Queen Mary and Westfield College, University of London; Bader D.L., Department of Materials, Queen Mary and Westfield College, University of London","The incidence of severe injuries for soccer players may lead to long-term inactivity or, at worst, retirement from the game. Many of these injuries, particularly those involving the lower leg, can be attributed to adverse physical conditions at the interface between the soccer shoe and the playing support surface. This study investigated the biomechanical characteristics at this interface for a range of proprietary soccer shoes. An experimental system was designed and developed which, via a weighted pendulum arm making contact with a vertical column, provided controlled rotation of the forefoot of the soccer shoe on samples of playing surfaces. The overall rotation was found to depend on several physical and material factors. For example, the size 7 soccer shoes produced a statistically significant increase in axial rotation for the same impact energy compared to the larger sized shoes under test. In addition, flat soled shoes, designed for synthetic playing surfaces, produced consistently smaller rotations than shoes with either moulded or screw-in studs, although this finding depended on the moisture content of the playing surface. The pressure distribution within several soccer shoes was also measured using the F-Scan Gait Analysis System, for a subject walking across a grass surface. Results indicated differences in pressure distribution over the first metatarsal area of the foot, in existing shoe designs. © 1993, Institution of Mechanical Engineers. All rights reserved.","","Biomechanics; Equipment Design; Foot; Gait; Materials Testing; Pressure; Reproducibility of Results; Rotation; Shoes; Soccer; Support, Non-U.S. Gov't; Analysis; Interfaces (materials); Performance; Shoe manufacture; Traction (friction); Axial rotation; Forefoot; Playing surface; Shoe design; Soccer shoes; article; biomechanics; equipment design; foot; gait; materials testing; physiology; pressure; reproducibility; rotation; shoe; sport; Biomechanics","Baker S.W., Canaway P.M., Playing quality standards for association football field. Sixth International Conference on Turfgrass research, Tokyo, pp. 403-405, (1989); Stanitski C.L., McMaster J.H., Ferguson R.J., Synthetic turf and grass: A comparative study, J. Sports Medicine, 2, pp. 22-26, (1974); Bonstingl R.W., Morehouse C.A., Niebel B.W., Torques developed by different types of shoes on various playing surfaces, Medicine and Sci. in Sports, 7, pp. 127-131, (1975); Torg J.S., Quendenfeld T.C., Landau S., Football shoes and playing surfaces: From safe to unsafe, Physicians and Sportsmedicine, 1, pp. 51-54, (1973); Hennig E.M., Cavanagh P.R., Albert H.T., Macmillan N.H., A piezoelectric method of measuring the vertical contact stresses beneath the human foot, J. Biom Engng, 4, pp. 213-222, (1982); Lord M., Hosein R., Williams R.B., Method for in-shoe shear stress measurement, J. Biom Engng, 14, pp. 181-186, (1992); Cavanagh P.R., Rodgers M.M., Pressure distribution under the human foot, Biomechanics: current interdisciplinary research, pp. 85-95, (1985)","","","","09544119","","","8280319","English","Proc. Inst. Mech. Eng. Part H J. Eng. Med.","Article","Final","","Scopus","2-s2.0-0027765234" "Badawy C.R.; Jan K.; Beck E.C.; Fleet N.; Taylor J.; Ford K.; Waterman B.R.","Badawy, Charles R. (57430787200); Jan, Kyleen (57210790602); Beck, Edward C. (57204510338); Fleet, Niles (57193559674); Taylor, Jeffrey (55829673200); Ford, Kevin (7102539333); Waterman, Brian R. (36085868600)","57430787200; 57210790602; 57204510338; 57193559674; 55829673200; 7102539333; 36085868600","Contemporary Principles for Postoperative Rehabilitation and Return to Sport for Athletes Undergoing Anterior Cruciate Ligament Reconstruction","2022","Arthroscopy, Sports Medicine, and Rehabilitation","4","1","","e103","e113","10","11","10.1016/j.asmr.2021.11.002","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123709895&doi=10.1016%2fj.asmr.2021.11.002&partnerID=40&md5=0a91939939480b1cde121add984746a8","Department of Orthopedic Surgery, Wake Forest Baptist Health, Winston-Salem, NC, United States; University of Illinois College of Medicine, Chicago, IL, United States; Department of Athletics, Wake Forest University, Winston-Salem, NC, United States; Department of Physical Therapy, High Point University, High Point, NC, United States","Badawy C.R., Department of Orthopedic Surgery, Wake Forest Baptist Health, Winston-Salem, NC, United States; Jan K., University of Illinois College of Medicine, Chicago, IL, United States; Beck E.C., Department of Orthopedic Surgery, Wake Forest Baptist Health, Winston-Salem, NC, United States; Fleet N., Department of Athletics, Wake Forest University, Winston-Salem, NC, United States; Taylor J., Department of Physical Therapy, High Point University, High Point, NC, United States; Ford K., Department of Physical Therapy, High Point University, High Point, NC, United States; Waterman B.R., Department of Orthopedic Surgery, Wake Forest Baptist Health, Winston-Salem, NC, United States","Despite advancements in our understanding of anterior cruciate ligament (ACL) injury prevention and nonsurgical management, ACL reconstruction continues to occur at an alarming rate. Among athletic patients, individuals participating in basketball, soccer, and football have the highest incidence of ACL injury, often requiring surgical intervention. To ensure the optimal treatment strategy for return to sport and prevention of secondary graft re-tear, it is important to tailor to the specific demands of the injured athlete and apply evidence-based best practices and rehabilitation principles. The purpose of this review is to provide readers with a brief background regarding ACL injuries, a focused review of clinical outcome studies after ACL reconstruction, and an updated framework with expert-guided recommendations for postoperative rehabilitation and return to sporting activity. Currently, there is no gold standard for rehabilitation after ACL reconstruction, highlighting the need for robust studies evaluating the best modalities for athlete rehabilitation, as well as determining the efficacy of new tools for improving therapy including blood flow restriction therapy and neuromuscular electrical stimulation. Based on clinical experience, a renewed focus on objective, criteria-based milestones may maximize the ability of return to preinjury levels of athletic function. © 2021 The Authors","","anterior cruciate ligament injury; anterior cruciate ligament reconstruction; Article; athlete; basketball player; biomechanics; blood flow restriction training; dynamometry; evidence based practice; football player; functional anatomy; functional status; gold standard; human; incidence; kinematics; medical expert; medical research; muscle isometric contraction; neuromuscular electrical stimulation; neuromuscular function; patient education; postoperative care; practice guideline; range of motion; rehabilitation care; return to sport; soccer player; tensile strength; treatment outcome; weight bearing","Gornitzky A.L., Lott A., Yellin J.L., Fabricant P.D., Lawrence J.T., Ganley T.J., Sport-specific yearly risk and incidence of anterior cruciate ligament tears in high school athletes: A systematic review and meta-analysis, Am J Sports Med, 44, pp. 2716-2723, (2016); Joseph A.M., Collins C.L., Henke N.M., Yard E.E., Fields S.K., Comstock R.D., A multisport epidemiologic comparison of anterior cruciate ligament injuries in high school athletics, J Athl Train, 48, pp. 810-817, (2013); Beischer S., Gustavsson L., Senorski E.H., Et al., Young athletes who return to sport before 9 months after anterior cruciate ligament reconstruction have a rate of new injury 7 times that of those who delay return, J Orthop Sports Phys Ther, 50, pp. 83-90, (2020); Wiggins A.J., Grandhi R.K., Schneider D.K., Stanfield D., Webster K.E., Myer G.D., Risk of secondary injury in younger athletes after anterior cruciate ligament reconstruction: A systematic review and meta-analysis, Am J Sports Med, 44, pp. 1861-1876, (2016); Webster K.E., Feller J.A., Exploring the high reinjury rate in younger patients undergoing anterior cruciate ligament reconstruction, Am J Sports Med, 44, pp. 2827-2832, (2016); Paterno M.V., Rauh M.J., Schmitt L.C., Ford K.R., Hewett T.E., Incidence of second ACL injuries 2 years after primary ACL reconstruction and return to sport, Am J Sports Med, 42, pp. 1567-1573, (2014); Widner M., Dunleavy M., Lynch S., Outcomes following ACL reconstruction based on graft type: Are all grafts equivalent?, Curr Rev Musculoskelet Med, 12, pp. 460-465, (2019); Kraeutler M.J., Wolsky R.M., Vidal A.F., Bravman J.T., Anatomy and biomechanics of the native and reconstructed anterior cruciate ligament: Surgical implications, J Bone Joint Surg Am, 99, pp. 438-445, (2017); Siegel L., Vandenakker-Albanese C., Siegel D., Anterior cruciate ligament injuries: Anatomy, physiology, biomechanics, and management, Clin J Sport Med, 22, pp. 349-355, (2012); Scheffler S., The cruciate ligaments: Anatomy, biology, and biomechanics, Knee Joint, pp. 11-21, (2012); Amis A.A., Dawkins G.P., Functional anatomy of the anterior cruciate ligament. Fibre bundle actions related to ligament replacements and injuries, J Bone Joint Surg Br, 73, pp. 260-267, (1991); Norwood L.A., Cross M.J., Anterior cruciate ligament: Functional anatomy of its bundles in rotatory instabilities, Am J Sports Med, 7, pp. 23-26, (1979); Kato Y., Ingham S.J., Maeyama A., Et al., Biomechanics of the human triple-bundle anterior cruciate ligament, Arthroscopy, 28, pp. 247-254, (2012); Otsubo H., Shino K., Suzuki D., Et al., The arrangement and the attachment areas of three ACL bundles, Knee Surg Sports Traumatol Arthrosc, 20, pp. 127-134, (2012); Hassebrock J.D., Gulbrandsen M.T., Asprey W.L., Makovicka J.L., Chhabra A., Knee ligament anatomy and biomechanics, Sports Med Arthrosc Rev, 28, pp. 80-86, (2020); Takahashi M., Doi M., Abe M., Suzuki D., Nagano A., Anatomical study of the femoral and tibial insertions of the anteromedial and posterolateral bundles of human anterior cruciate ligament, Am J Sports Med, 34, pp. 787-792, (2006); Fujishiro H., Tsukada S., Nakamura T., Nimura A., Mochizuki T., Akita K., Attachment area of fibres from the horns of lateral meniscus: Anatomic study with special reference to the positional relationship of anterior cruciate ligament, Knee Surg Sports Traumatol Arthrosc, 25, pp. 368-373, (2017); Hwang M.D., Piefer J.W., Lubowitz J.H., Anterior cruciate ligament tibial footprint anatomy: Systematic review of the 21st century literature, Arthroscopy, 28, pp. 728-734, (2012); Colombet P., Robinson J., Christel P., Et al., Morphology of anterior cruciate ligament attachments for anatomic reconstruction: A cadaveric dissection and radiographic study, Arthroscopy, 22, pp. 984-992, (2006); Chiba D., Yamamoto Y., Kimura Y., Et al., Laterally shifted tibial tunnel can be the risk of residual knee laxity for double-bundle anterior cruciate ligament reconstruction [published online April 30, 2021]. 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A long-term follow-up study, Am J Sports Med, 20, pp. 7-12, (1992); Wu I.T., Hevesi M., Desai V.S., Et al., Comparative outcomes of radial and bucket-handle meniscal tear repair: A propensity-matched analysis, Am J Sports Med, 46, pp. 2653-2660, (2018); Richards D.P., Barber F.A., Herbert M.A., Compressive loads in longitudinal lateral meniscus tears: A biomechanical study in porcine knees, Arthroscopy, 21, pp. 1452-1456, (2005); McCulloch P.C., Jones H.L., Hamilton K., Hogen M.G., Gold J.E., Noble P.C., Does simulated walking cause gapping of meniscal repairs?, J Exp Orthop, 3, (2016)","E.C. Beck; Department of Orthopedic Surgery, Wake Forest Baptist Health, Winston-Salem, 1 Medical Center Blvd, 27157, United States; email: Ecbeck@wakehealth.edu","","Elsevier Inc.","2666061X","","","","English","Arthrosc., Sports Med., Rehabil.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85123709895" "Katis A.; Amiridis I.; Kellis E.; Lees A.","Katis, Athanasios (23135001400); Amiridis, Ioannis (6602623958); Kellis, Eleftherios (6603815400); Lees, Adrian (7202900498)","23135001400; 6602623958; 6603815400; 7202900498","Recovery of powerful kick biomechanics after intense running fatigue in male and female soccer players","2014","Asian Journal of Sports Medicine","5","4","e24013","","","8","8","10.5812/asjsm.24013","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84926380956&doi=10.5812%2fasjsm.24013&partnerID=40&md5=e02369b596920393c4715180469c5ac3","Aristotle University of Thessaloniki, Laboratory of Neuromechanics, Department of Physical Education and Sport Sciences of Serres, Serres, Greece; Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom","Katis A., Aristotle University of Thessaloniki, Laboratory of Neuromechanics, Department of Physical Education and Sport Sciences of Serres, Serres, Greece; Amiridis I., Aristotle University of Thessaloniki, Laboratory of Neuromechanics, Department of Physical Education and Sport Sciences of Serres, Serres, Greece; Kellis E., Aristotle University of Thessaloniki, Laboratory of Neuromechanics, Department of Physical Education and Sport Sciences of Serres, Serres, Greece; Lees A., Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom","Background: Fatigue seems to have a significant effect on soccer kick performance. However, the duration of these effects has not been previously investigated. Objectives: The purpose of the present study was to investigate the duration of the acute effects of fatigue on soccer kick performance in males and females. Patients and Methods: Ten male (age: 26.3 ± 4.9 years, height: 178.1 ± 5.1 cm, mass: 81.3 ± 8.1 kg) and ten female (age: 24.4 ± 4.2 years, height: 169.7 ± 5.7 cm, mass: 61.8 ± 5.1 kg) amateur soccer players performed three instep kicks prior to and after running on a treadmill till exhaustion. Three-dimensional kinematics were collected pre- and post-fatigue. Results: Analysis of variance indicated a statistically significant decline in ball speed during the first and the second trial after fatigue (P < 0.05), but recovered to pre-fatigue levels during the third post-fatigue kicking trial (P > 0.05). Similarly, maximum ankle, knee and hip linear velocity and ankle angular displacement were significantly lower during the first two trials (P < 0.05), but not during the third trial after fatigue (P > 0.05). Conclusions: Soccer kick parameters recovered to pre-fatigue levels approximately within a minute after the end of the protocol. These findings have a practical meaning for players who have to perform set piece kicks under fatigue conditions and for coaches who have to guide their players. © 2014, Kowsar Corp.","Fatigue; Gender; Performance; Skill","","Ekblom B., Football (Soccer), (1994); Mohr M., Krustrup P., Bangsbo J., Fatigue in soccer: A brief review, J Sports Sci, 23, 6, pp. 593-599, (2005); Lees A., Davies T., The effects of fatigue on soccer kick biomechanics, J Sports Sci, 8, pp. 156-157, (1998); Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, J Sports Sci, 24, 9, pp. 951-960, (2006); Kellis E., Katis A., Vrabas I.S., Effects of an intermittent exercise fatigue protocol on biomechanics of soccer kick performance, Scand J Med Sci Sports, 16, 5, pp. 334-344, (2006); Alcock A.M., Gilleard W., Hunter A.B., Baker J., Brown N., Curve and instep kick kinematics in elite female footballers, J Sports Sci, 30, 4, pp. 387-394, (2012); Barfield W., Effects of selected kinematic and kinetic variables on instep kicking with dominant and non-dominant limbs, J Hum Mov Stud, 29, pp. 251-272, (1995); Rahnama N., Reilly T., Lees A., Graham-Smith P., Muscle fatigue induced by exercise simulating the work rate of competitive soccer, J Sports Sci, 21, 11, pp. 933-942, (2003); Abdul-Aziz R., Tan F., Teh K.C., A pilot study comparing two field tests with the treadmill run test in soccer players, J Sports Sci Med, 4, pp. 105-112, (2005); Lees A., Barton G., Robinson M., The influence of Cardan rotation sequence on angular orientation data for the lower limb in the soccer kick, J Sports Sci, 28, 4, pp. 445-450, (2010); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med Sci Sports Exerc, 30, 6, pp. 917-927, (1998); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med Sci Sports Exerc, 34, 12, pp. 2028-2036, (2002); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Med Sci Sports Exerc, 36, 6, pp. 1017-1028, (2004); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J Sports Sci Med, 6, 2, pp. 154-165, (2007); Lees A., Asai T., Ersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, J Sports Sci, 28, 8, pp. 805-817, (2010); Asai T., Carre M., Akatsuka T., Haake S., The curve kick of a football I: Impact with the foot, Sports Eng, 5, pp. 183-192, (2002); Asami T., Nolte V., Analysis of Powerful Ball Kicking, (1983); Clark B.C., Collier S.R., Manini T.M., Ploutz-Snyder L.L., Sex differences in muscle fatigability and activation patterns of the human quadriceps femoris, Eur J Appl Physiol, 94, 1-2, pp. 196-206, (2005); Stackhouse S.K., Stevens J.E., Lee S.C., Pearce K.M., Snyder-Mackler L., Binder-Macleod S.A., Maximum voluntary activation in nonfatigued and fatigued muscle of young and elderly individuals, Phys Ther, 81, 5, pp. 1102-1109, (2001)","A. Katis; Aristotle University of Thessaloniki, Laboratory of Neuromechanics, Department of Physical Education and Sport Sciences of Serres, Serres, Greece; email: akatis@phed-sr.auth.gr","","Kowsar Medical Institute","2008000X","","","","English","Asian J. Sports Med.","Article","Final","All Open Access; Green Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-84926380956" "Wilson D.A.; Booysen N.; Dainese P.; Heller M.O.; Stokes M.; Warner M.B.","Wilson, David A. (57200511751); Booysen, Nadine (57192384558); Dainese, Paolo (57203805276); Heller, Markus O. (55772483500); Stokes, Maria (56230424500); Warner, Martin B. (25823530100)","57200511751; 57192384558; 57203805276; 55772483500; 56230424500; 25823530100","Accuracy of movement quality screening to document effects of neuromuscular control retraining exercises in a young ex-footballer with hip and groin symptoms: A proof of concept case study","2018","Medical Hypotheses","120","","","116","120","4","8","10.1016/j.mehy.2018.08.027","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053006704&doi=10.1016%2fj.mehy.2018.08.027&partnerID=40&md5=d7d73b88f5719e27be31bb4d9fc4f295","School of Health Sciences, University of Southampton, Southampton, United Kingdom; Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, United Kingdom; Institute for Life Sciences, University of Southampton, Southampton, United Kingdom; Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, United Kingdom; Department of Medical Science, University of Turin, Italy","Wilson D.A., School of Health Sciences, University of Southampton, Southampton, United Kingdom, Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, United Kingdom; Booysen N., School of Health Sciences, University of Southampton, Southampton, United Kingdom, Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, United Kingdom; Dainese P., Department of Medical Science, University of Turin, Italy; Heller M.O., Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, United Kingdom, Institute for Life Sciences, University of Southampton, Southampton, United Kingdom, Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, United Kingdom; Stokes M., School of Health Sciences, University of Southampton, Southampton, United Kingdom, Institute for Life Sciences, University of Southampton, Southampton, United Kingdom, Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, United Kingdom; Warner M.B., School of Health Sciences, University of Southampton, Southampton, United Kingdom, Institute for Life Sciences, University of Southampton, Southampton, United Kingdom, Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, United Kingdom","Hip and groin pain is common in footballers and altering movement patterns can reduce symptoms. Observational tests of movement control are thought to identify abnormal movement patterns, but their accuracy needs yet to be confirmed by comparison with an objective measure. To assess the accuracy, using 3D motion analysis, of observational movement control tests and their ability to detect changes, and document changes in symptoms following a neuromuscular control exercise programme in an ex-footballer with hip and groin pain. A 25-year-old male with chronic bilateral hip and groin pain had their movement control ability rated and kinematic data collected using 3D motion analysis while performing Small Knee Bend (SKB) and SKB with Rotation (SKB Rot) tests pre-and post-neuromuscular control exercise training. Movement control was rated as at fault if they were unable to control specific trunk and pelvic movements during the tests. The Copenhagen Hip and Groin Outcome Score (HAGOS) was used to assess symptoms. Following the intervention, observational rating during the SKB test improved from fault to no fault for anterior pelvic tilt, which decreased by 17° and 16° during right and left leg SKB tests respectively. The HAGOS symptoms subsection improved from 36% to 61%. Observational movement screening ratings were supported by 3-D motion analysis. These findings indicate that the screening tool was accurate for detecting improvements in trunk and pelvic movement control following an exercise programme in an ex-footballer who had presented with hip and groin pain. © 2018 Elsevier Ltd","","Adult; Athletes; Biomechanical Phenomena; Exercise Therapy; Groin; Hip; Humans; Imaging, Three-Dimensional; Male; Movement; Pain; Pain Management; Proof of Concept Study; Reproducibility of Results; Soccer; abduction; accuracy; adult; Article; electromyography; exercise; football player; gluteus medius muscle; Hip and Groin Outcome Score; hip muscle; hip pain; human; inguinal pain; knee function; male; middle aged; movement (physiology); muscle contraction; neuromuscular function; scoring system; small knee bend; small knee bend with rotation; analgesia; athlete; biomechanics; hip; inguinal region; kinesiotherapy; pain; pathology; procedures; proof of concept; reproducibility; soccer; three dimensional imaging","Walden M., Hagglund M., Ekstrand J., UEFA Champions League study: a prospective study of injuries in professional football during the 2001–2002 season, Br J Sports Med, 39, 8, pp. 542-546, (2005); 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Tijssen M., van Cingel R., Staal J., Et al., Physical therapy aimed at self-management versus usual care physical therapy after hip arthroscopy for femoroacetabular impingement: study protocol for a randomized controlled trial, Trials, 17, 1, (2016); Agresta C., Church C., Henley J., Et al., Single-Leg Squat Performance in Active Adolescents Aged 8–17 Years, J Strength Conditioning Res, 31, 5, pp. 1187-1191, (2017); Perrott M.A., Pizzari T., Opar M., Et al., Development of clinical rating criteria for tests of lumbopelvic stability, Rehabil Res Practice, 2012, (2012); Botha N., Clinical and functional tests in young footballers with femoroacetabular impingement (FAI): Pilot case study, (2013); Taylor W.R., Ehrig R.M., Duda G.N., Et al., On the influence of soft tissue coverage in the determination of bone kinematics using skin markers, J Orthop Res, 23, 4, pp. 726-734, (2005); Ehrig R.M., Taylor W.R., Duda G.N., Et al., A survey of formal methods for determining the centre of rotation of ball joints, J Biomech, 39, 15, pp. 2798-2809, (2006); Ehrig R.M., Taylor W.R., Duda G.N., Et al., A survey of formal methods for determining functional joint axes, J Biomech, 40, 10, pp. 2150-2157, (2007); Seay J.F., Van Emmerik R.E.A., Hamill J., Low back pain status affects pelvis-trunk coordination and variability during walking and running, Clin Biomech, 26, 6, pp. 572-578, (2011); Ganz R., Parvizi J., Beck M., Et al., Femoroacetabular impingement: a cause for osteoarthritis of the hip, Clin Orthop Relat Res, 417, pp. 112-120, (2003)","D.A. Wilson; School of Health Sciences, University of Southampton, Southampton, SO17 1BJ, United Kingdom; email: d.a.wilson@soton.ac.uk","","Churchill Livingstone","03069877","","MEHYD","30220329","English","Med. Hypotheses","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85053006704" "Taylor J.B.; Nguyen A.-D.; Shultz S.J.; Ford K.R.","Taylor, Jeffrey B. (55829673200); Nguyen, Anh-Dung (12805987900); Shultz, Sandra J. (57206316430); Ford, Kevin R. (7102539333)","55829673200; 12805987900; 57206316430; 7102539333","Hip biomechanics differ in responders and non-responders to an ACL injury prevention program","2020","Knee Surgery, Sports Traumatology, Arthroscopy","28","4","","1236","1245","9","8","10.1007/s00167-018-5158-1","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053906772&doi=10.1007%2fs00167-018-5158-1&partnerID=40&md5=86f473c6c669aa88ca9c4a8c63729921","Department of Physical Therapy, Congdon School of Health Sciences, High Point University, One University Parkway, High Point, 27268, NC, United States; Department of Kinesiology, School of Health and Human Sciences, University of North Carolina at Greensboro, Greensboro, NC, United States; Department of Athletic Training, Congdon School of Health Sciences, High Point University, High Point, NC, United States","Taylor J.B., Department of Physical Therapy, Congdon School of Health Sciences, High Point University, One University Parkway, High Point, 27268, NC, United States, Department of Kinesiology, School of Health and Human Sciences, University of North Carolina at Greensboro, Greensboro, NC, United States; Nguyen A.-D., Department of Athletic Training, Congdon School of Health Sciences, High Point University, High Point, NC, United States; Shultz S.J., Department of Kinesiology, School of Health and Human Sciences, University of North Carolina at Greensboro, Greensboro, NC, United States; Ford K.R., Department of Physical Therapy, Congdon School of Health Sciences, High Point University, One University Parkway, High Point, 27268, NC, United States","Purpose: To investigate the differences in demographic, anthropometric, biomechanical, and/or performance variables between those that do (responders) and do not (non-responders) exhibit reductions in knee abduction moments after an anterior cruciate ligament injury prevention program (ACL-IPP). Methods: Forty-three adolescent female athletes completed biomechanical (3D motion analysis of a drop vertical jump) and performance testing before and after randomization into a 6-week ACL-IPP. Participants were classified into responders and non-responders based on their level of reduction of knee abduction moment from pre- to post-test. Results: Compared to non-responders, responders exhibited increased hip adduction excursion at baseline (p = 0.02) and trended towards attending more training sessions (p = 0.07) and participating in soccer and not basketball (p = 0.07). Responders also showed greater improvements in hip flexion angles (p = 0.02) and moments (p < 0.001), and knee abduction angles (p < 0.001) and excursions (p = 0.001). There were no significant differences in age or experience with prior injury prevention programs (n.s.). Conclusions: After an ACL-IPP, athletes that exhibit the greatest reduction in knee abduction moments exhibit greater hip adduction excursion at baseline and show corresponding improvements in hip flexion and knee abduction kinematics and hip flexion moments. These results can help clinicians prospectively identify individuals that may not respond to an ACL-IPP and target individualized training for those at risk of injury. Level of evidence: I. Clinical trial registration number: Clinicaltrials.gov NCT02530333. © 2018, European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA).","Anterior cruciate ligament; Injury prevention; Knee abduction moments; Knee valgus","Adolescent; Anterior Cruciate Ligament Injuries; Athletes; Basketball; Biomechanical Phenomena; Female; Hip Joint; Humans; Knee Joint; Movement; Risk Factors; Soccer; Young Adult; adolescent; anterior cruciate ligament injury; athlete; basketball; biomechanics; female; hip; human; injury; knee; movement (physiology); pathophysiology; physiology; risk factor; soccer; young adult","Agel J., Rockwood T., Klossner D., Collegiate ACL injury rates across 15 sports: national collegiate athletic association injury surveillance system data update (2004–2005 through 2012–2013), Clin J Sport Med, 26, pp. 518-523, (2016); Bahr R., Why screening tests to predict injury do not work-and probably never will… a critical review, Br J Sports Med, 50, pp. 776-780, (2016); Bell A.L., Pedersen D.R., Brand R.A., A comparison of the accuracy of several hip center location prediction methods, J Biomech, 23, pp. 617-621, (1990); Chappell J.D., Limpisvasti O., Effect of a neuromuscular training program on the kinetics and kinematics of jumping tasks, Am J Sports Med, 36, pp. 1081-1086, (2008); Ford K.R., Nguyen A.D., Dischiavi S.L., Hegedus E.J., Zuk E.F., Taylor J.B., An evidence-based review of hip-focused neuromuscular exercise interventions to address dynamic lower extremity valgus, Open Access J Sports Med, 6, pp. 291-303, (2015); Grimm N.L., Jacobs J.C., Kim J., Denney B.S., Shea K.G., Anterior cruciate ligament and knee injury prevention programs for soccer players: a systematic review and meta-analysis, Am J Sports Med, 43, pp. 2049-2056, (2015); Hewett T.E., Ford K.R., Xu Y.Y., Khoury J., Myer G.D., Utilization of ACL injury biomechanical and neuromuscular risk profile analysis to determine the effectiveness of neuromuscular training, Am J Sports Med, 44, pp. 3146-3151, (2016); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes. 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Lim B.O., Lee Y.S., Kim J.G., An K.O., Yoo J., Kwon Y.H., Effects of sports injury prevention training on the biomechanical risk factors of anterior cruciate ligament injury in high school female basketball players, Am J Sports Med, 37, pp. 1728-1734, (2009); Michaelidis M., Koumantakis G.A., Effects of knee injury primary prevention programs on anterior cruciate ligament injury rates in female athletes in different sports: a systematic review, Phys Ther Sport, 15, pp. 200-210, (2014); Nilstad A., Andersen T.E., Kristianslund E., Bahr R., Myklebust G., Steffen K., Et al., Physiotherapists can identify female football players with high knee valgus angles during vertical drop jumps using real-time observational screening, J Orthop Sports Phys Ther, 44, pp. 358-365, (2014); Numata H., Nakase J., Kitaoka K., Shima Y., Oshima T., Takata Y., Et al., Two-dimensional motion analysis of dynamic knee valgus identifies female high school athletes at risk of non-contact anterior cruciate ligament injury, Knee Surg Sports Traumatol Arthrosc, 26, pp. 442-447, (2018); 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Smith H.C., Vacek P., Johnson R.J., Slauterbeck J.R., Hashemi J., Shultz S., Et al., Risk factors for anterior cruciate ligament injury: a review of the literature—part 1: neuromuscular and anatomic risk, Sports Health, 4, pp. 69-78, (2012); Stearns K.M., Powers C.M., Improvements in hip muscle performance result in increased use of the hip extensors and abductors during a landing task, Am J Sports Med, 42, pp. 602-609, (2014); Stevenson J.H., Beattie C.S., Schwartz J.B., Busconi B.D., Assessing the effectiveness of neuromuscular training programs in reducing the incidence of anterior cruciate ligament injuries in female athletes: a systematic review, Am J Sports Med, 43, pp. 482-490, (2015); Sugimoto D., Myer G.D., Foss K.D., Hewett T.E., Dosage effects of neuromuscular training intervention to reduce anterior cruciate ligament injuries in female athletes: meta- and sub-group analyses, Sports Med, 44, pp. 551-562, (2014); Sugimoto D., Myer G.D., Foss K.D., Hewett T.E., Specific exercise effects of preventive neuromuscular training intervention on anterior cruciate ligament injury risk reduction in young females: meta-analysis and subgroup analysis, Br J Sports Med, 49, pp. 282-289, (2015); 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Taylor J.B., Nguyen A.D., Paterno M.V., Huang B., Ford K.R., Real-time optimized biofeedback utilizing sport techniques (ROBUST): a study protocol for a randomized controlled trial, BMC Musculoskelet Disord, 18, (2017); Taylor J.B., Waxman J.P., Richter S.J., Shultz S.J., Evaluation of the effectiveness of anterior cruciate ligament injury prevention programme training components: a systematic review and meta-analysis, Br J Sports Med, 49, pp. 79-87, (2015); Taylor J.B., Wright A.A., Dischiavi S.L., Townsend M.A., Marmon A.R., Activity demands during multi-directional team sports: a systematic review, Sports Med, 47, pp. 2533-2551, (2017); Thompson-Kolesar J.A., Gatewood C.T., Tran A.A., Silder A., Shultz R., Delp S.L., Et al., Age influences biomechanical changes after participation in an anterior cruciate ligament injury prevention program, Am J Sports Med, 46, pp. 598-606, (2018); Vacek P.M., Slauterbeck J.R., Tourville T.W., Sturnick D.R., Holterman L.A., Smith H.C., Et al., Multivariate analysis of the risk factors for first-time noncontact acl injury in high school and college athletes: a prospective cohort study with a nested, matched case-control analysis, Am J Sports Med, 44, pp. 1492-1501, (2016); Webster K.E., Hewett T.E., Meta-analysis of meta-analyses of anterior cruciate ligament injury reduction training programs, J Orthop Res, (2018); Yoo J.H., Lim B.O., Ha M., Lee S.W., Oh S.J., Lee Y.S., Et al., A meta-analysis of the effect of neuromuscular training on the prevention of the anterior cruciate ligament injury in female athletes, Knee Surg Sports Traumatol Arthrosc, 18, pp. 824-830, (2010); Zebis M.K., Andersen L.L., Brandt M., Myklebust G., Bencke J., Lauridsen H.B., Et al., Effects of evidence-based prevention training on neuromuscular and biomechanical risk factors for ACL injury in adolescent female athletes: a randomised controlled trial, Br J Sports Med, 50, pp. 552-557, (2016)","J.B. Taylor; Department of Physical Therapy, Congdon School of Health Sciences, High Point University, High Point, One University Parkway, 27268, United States; email: jtaylor@highpoint.edu","","Springer","09422056","","","30259145","English","Knee Surg. Sports Traumatol. Arthroscopy","Article","Final","","Scopus","2-s2.0-85053906772" "Suarez-Arrones L.; Núñez F.J.; Lara-Lopez P.; Di Salvo V.; Méndez-Villanueva A.","Suarez-Arrones, Luis (55266540600); Núñez, F. Javier (26642769600); Lara-Lopez, Pilar (57207828578); Di Salvo, Valter (6603121942); Méndez-Villanueva, Alberto (15035651800)","55266540600; 26642769600; 57207828578; 6603121942; 15035651800","Inertial flywheel knee- And hip-dominant hamstring strength exercises in professional soccer players: Muscle use and velocity-based (mechanical) eccentric overload","2020","PLoS ONE","15","10 October","e0239977","","","","8","10.1371/journal.pone.0239977","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092257951&doi=10.1371%2fjournal.pone.0239977&partnerID=40&md5=7a5978be583d85f9cb04fc6e7e91b708","Department of Sport and Informatics, Section of Physical Education and Sport, Pablo de Olavide University, Sevilla, Spain; Performance Department, FC Basel, Basel, Switzerland; Football Performance & Science Department, ASPIRE Academy, Doha, Qatar; Department of Movement, Human and Health Sciences, University of Rome Foro Italico, Rome, Italy; Qatar Football Association, Doha, Qatar","Suarez-Arrones L., Department of Sport and Informatics, Section of Physical Education and Sport, Pablo de Olavide University, Sevilla, Spain, Performance Department, FC Basel, Basel, Switzerland; Núñez F.J., Department of Sport and Informatics, Section of Physical Education and Sport, Pablo de Olavide University, Sevilla, Spain; Lara-Lopez P., Department of Sport and Informatics, Section of Physical Education and Sport, Pablo de Olavide University, Sevilla, Spain; Di Salvo V., Football Performance & Science Department, ASPIRE Academy, Doha, Qatar, Department of Movement, Human and Health Sciences, University of Rome Foro Italico, Rome, Italy; Méndez-Villanueva A., Qatar Football Association, Doha, Qatar","The primary aim of the present study was to analyze mechanical responses during inertial knee- and hip-dominant hamstring strengthening exercises (flywheel leg-curl and hip-extension in conic-pulley), and the secondary aim was to measure and compare regional muscle use using functional magnetic resonance imaging. Mean power, peak power, mean velocity, peak velocity and time in the concentric (CON) and eccentric (ECC) phases were measured. The transverse relaxation time (T2) shift from pre- to post-exercise were calculated for the biceps femoris long (BFl) and short (BFs) heads, semitendinosus (ST) and semimembranosus (SM) muscles at proximal, middle and distal areas of the muscle length. Peak and mean power in flywheel leg-curl were higher during the CON than the ECC phase (p<0.01). ECC peak power was higher than CON phase (p<0.01) in conic-pulley hip-extension exercise, while mean power was higher during the CON than ECC phase (p<0.01). Flywheel leg-curl showed a higher T2 values in ST and BFs and BFl (p<0.05), while the conic-pulley hipextension had a higher T2 values in the proximal region of the ST and BFl (p<0.05). In conclusion, ECC overload was only observed in peak power during the conic-pulley hip-extension exercise. Flywheel leg-curl involved a greater overall use of the 4 muscle bellies, more specifically in the ST and BFs, with a selective augmented activity (compared with the conic-pulley) in the 3 regions of the BFs, while conic-pulley hip-extension exercise selectively targeted the proximal and medial regions of the BFl. Physiotherapists and strength and conditioning coaches should consider this when optimizing the training and recovery process for hamstring muscles, especially after injury. © 2020 Suarez-Arrones et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.","","Athletes; Biomechanical Phenomena; Exercise; Hamstring Muscles; Hip; Humans; Knee; Magnetic Resonance Imaging; Male; Mechanical Phenomena; Muscle Strength; Soccer; Weight-Bearing; Young Adult; acceleration phase; adult; Article; biceps femoris muscle; concentric muscle contraction; eccentric muscle contraction; eccentric overload; exercise; flywheel leg curl exercise; functional magnetic resonance imaging; hamstring muscle; hip extension; hip extension versa pulley exercise; human; human experiment; knee function; male; muscle length; muscle strength; musculoskeletal system parameters; physical phase; professional athlete; reflex; relaxation time; semimembranosus muscle; semitendinous muscle; soccer player; velocity; young adult; athlete; biomechanics; diagnostic imaging; hamstring muscle; hip; knee; mechanics; muscle strength; nuclear magnetic resonance imaging; physiology; soccer; weight bearing","Ekstrand J, Hagglund M, Walden M., Epidemiology of muscle injuries in professional football (soccer), Am J Sports Med, 39, 6, pp. 1226-1232, (2011); Woods C, Hawkins RD, Maltby S, Hulse M, Thomas A, Hodson A., The Football Association Medical Research Programme: an audit of injuries in professional football-analysis of hamstring injuries, Br J Sports Med, 38, 1, pp. 36-41, (2004); Hawkins RD, Hulse MA, Wilkinson C, Hodson A, Gibson M., The association football medical research programme: an audit of injuries in professional football, Br J Sports Med, 35, 1, pp. 43-47, (2001); Ekstrand J, Healy JC, Walden M, Lee JC, English B, Hagglund M., Hamstring muscle injuries in professional football: the correlation of MRI findings with return to play, Br J Sports Med, 46, 2, pp. 112-117, (2012); Hallen A, Ekstrand J., Return to play following muscle injuries in professional footballers, J Sports Sci, 32, 13, pp. 1229-1236, (2014); Brooks JH, Fuller CW, Kemp SP, Reddin DB., Incidence, risk, and prevention of hamstring muscle injuries in professional rugby union, Am J Sports Med, 34, 8, pp. 1297-1306, (2006); Ono T, Higashihara A, Fukubayashi T., Hamstring functions during hip-extension exercise assessed with electromyography and magnetic resonance imaging, Res Sports Med, 19, 1, pp. 42-52, (2011); More RC, Karras BT, Neiman R, Fritschy D, Woo SL, Daniel DM., Hamstrings-an anterior cruciate ligament protagonist. 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Comparison of force profile in a cylinder-shaped and a cone-shaped axis devices, J Sports Sci, 2020, pp. 1-5; Nunez FJ, Suarez-Arrones LJ, Cater P, Mendez-Villanueva A., The High Pull Exercise: A Comparison Between a Versapulley Flywheel Device and the Free Weight, Int J Sports Physiol Perform, pp. 1-21, (2016); Green RA, Wilson DJ., A pilot study using magnetic resonance imaging to determine the pattern of muscle group recruitment by rowers with different levels of experience, Skeletal Radiol, 29, 4, pp. 196-203, (2000); Takeda Y, Kashiwaguchi S, Endo K, Matsuura T, Sasa T., The most effective exercise for strengthening the supraspinatus muscle: evaluation by magnetic resonance imaging, Am J Sports Med, 30, 3, pp. 374-381, (2002); Wakahara T, Fukutani A, Kawakami Y, Yanai T., Nonuniform muscle hypertrophy: its relation to muscle activation in training session, Med Sci Sports Exerc, 45, 11, pp. 2158-2165, (2013); Ema R, Wakahara T, Miyamoto N, Kanehisa H, Kawakami Y., Inhomogeneous architectural changes of the quadriceps femoris induced by resistance training, Eur J Appl Physiol, 113, 11, pp. 2691-2703, (2013); Fernandez-Gonzalo R, Tesch PA, Linnehan RM, Kreider RB, Di Salvo V, Suarez-Arrones L, Et al., Individual Muscle use in Hamstring Exercises by Soccer Players Assessed using Functional MRI, Int J Sports Med, 37, 7, pp. 559-564, (2016); Borg G, Hassmen P, Lagerstrom M., Perceived exertion related to heart rate and blood lactate during arm and leg exercise, Eur J Appl Physiol Occup Physiol, 56, 6, pp. 679-685, (1987); Sweet TW, Foster C, McGuigan MR, Brice G., Quantitation of resistance training using the session rating of perceived exertion method, J Strength Cond Res, 18, 4, pp. 796-802, (2004); Lambert MI, Borresen J., Measuring training load in sports, Int J Sports Physiol Perform, 5, 3, pp. 406-411, (2010); Schuermans J, Van Tiggelen D, Danneels L, Witvrouw E., Susceptibility to Hamstring Injuries in Soccer: A Prospective Study Using Muscle Functional Magnetic Resonance Imaging, Am J Sports Med, 44, 5, pp. 1276-1285, (2016); Hopkins WG, Marshall SW, Batterham AM, Hanin J., Progressive statistics for studies in sports medicine and exercise science, Medicine & Science in Sports & Exercise, 41, 1, pp. 3-13, (2009); Shepstone TN, Tang JE, Dallaire S, Schuenke MD, Staron RS, Phillips SM., Short-term high- vs. lowvelocity isokinetic lengthening training results in greater hypertrophy of the elbow flexors in young men, J Appl Physiol (1985), 98, 5, pp. 1768-1776, (2005); Seynnes OR, de Boer M, Narici MV., Early skeletal muscle hypertrophy and architectural changes in response to high-intensity resistance training, J Appl Physiol (1985), 102, 1, pp. 368-373, (2007); Goldspink G., Changes in muscle mass and phenotype and the expression of autocrine and systemic growth factors by muscle in response to stretch and overload, Journal of anatomy, 194, pp. 323-334, (1999); Beato M, Dello Iacono A., Implementing Flywheel (Isoinertial) Exercise in Strength Training: Current Evidence, Practical Recommendations, and Future Directions, Frontiers in Physiology, 11, 569, (2020); Mendiguchia J, Garrues M, Cronin JB, Contreras B, Los Arcos A, Malliaropoulos N, Et al., Nonuniform changes in MRI measurements of the thigh muscles after two hamstring strengthening exercises, J Strength Cond Res, 27, 3, pp. 574-581, (2013); Mendiguchia J, Arcos A, Garrues M, Myer GD, Yanci J, Idoate F., The use of MRI to evaluate posterior thigh muscle activity and damage during nordic hamstring exercise, J Strength Cond Res, 27, 12, pp. 3426-3435, (2013); Orchard J, Best TM., The management of muscle strain injuries: an early return versus the risk of recurrence, Clin J Sport Med, 12, 1, pp. 3-5, (2002); Silder A, Heiderscheit BC, Thelen DG, Enright T, Tuite MJ., MR observations of long-term musculotendon remodeling following a hamstring strain injury, Skeletal Radiol, 37, 12, pp. 1101-1109, (2008); Hawkins D, Hull ML., A method for determining lower extremity muscle-tendon lengths during flexion/ extension movements, J Biomech, 23, 5, pp. 487-494, (1990); Visser JJ, Hoogkamer JE, Bobbert MF, Huijing PA., Length and moment arm of human leg muscles as a function of knee and hip-joint angles, Eur J Appl Physiol Occup Physiol, 61, 5-6, pp. 453-460, (1990); Ono T, Okuwaki T, Fukubayashi T., Differences in activation patterns of knee flexor muscles during concentric and eccentric exercises, Res Sports Med, 18, 3, pp. 188-198, (2010)","L. Suarez-Arrones; Department of Sport and Informatics, Section of Physical Education and Sport, Pablo de Olavide University, Sevilla, Spain; email: ljsuamor@upo.es","","Public Library of Science","19326203","","POLNC","33007010","English","PLoS ONE","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85092257951" "De Ste Croix M.; Hughes J.; Ayala F.; Taylor L.; Datson N.","De Ste Croix, Mark (6603255583); Hughes, Jonathan (36241583700); Ayala, Francisco (7101603256); Taylor, Luke (57204507358); Datson, Naomi (28267604200)","6603255583; 36241583700; 7101603256; 57204507358; 28267604200","Efficacy of Injury Prevention Training Is Greater for High-Risk vs Low-Risk Elite Female Youth Soccer Players","2018","American Journal of Sports Medicine","46","13","","3271","3280","9","10","10.1177/0363546518795677","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85055792627&doi=10.1177%2f0363546518795677&partnerID=40&md5=f55353f36ea5aea46731f689bd296096","School of Sport and Exercise, University of Gloucestershire, Gloucester, United Kingdom; Sports Research Centre, Miguel Hernandez University of Elche, Alacant, Spain; English Football Association, St Georges Park, Burton, United Kingdom; Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, United Kingdom; Institute of Sport, University of Chichester, Chichester, United Kingdom","De Ste Croix M., School of Sport and Exercise, University of Gloucestershire, Gloucester, United Kingdom; Hughes J., School of Sport and Exercise, University of Gloucestershire, Gloucester, United Kingdom; Ayala F., Sports Research Centre, Miguel Hernandez University of Elche, Alacant, Spain; Taylor L., English Football Association, St Georges Park, Burton, United Kingdom, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, United Kingdom; Datson N., English Football Association, St Georges Park, Burton, United Kingdom, Institute of Sport, University of Chichester, Chichester, United Kingdom","Background: The efficacy of robustness training for high- versus low-risk individuals within high-risk groups is currently unknown. Purpose: To explore the efficacy of robustness training on injury risk factors among female youth soccer players and to examine if high-risk athletes are greater responders to such training. Study Design: Controlled laboratory study. Methods: A total of 125 elite youth female soccer players on the English FA talent pathway were randomly selected into a training group (n = 71) or a control group (n = 54). Relative leg stiffness, 2-dimensional knee valgus and knee flexion range of motion from a single-legged countermovement jump, and probability of high knee abduction moment (pKAM) risk were all determined before and after a 16-week robustness training program. For further analysis, participants in the training group were split into groups based on risk: high risk (pKAM >0.80, n = 33) and low risk (pKAM <0.55, n = 33). Magnitude-based inferences were used to explore differences between the control and intervention groups and the high- and low-risk groups. Results: Magnitude-based inferences demonstrated significant beneficial effects in the training group for knee valgus, pKAM, and leg stiffness as compared with the control group. The control group demonstrated possible worthwhile differences in knee flexion range of motion as compared with the intervention group. The high-risk group demonstrated likely/very likely worthwhile differences versus the low-risk group for all parameters. Conclusion/Clinical Relevance: Robustness training induces significant beneficial improvements in injury risk factors among female youth soccer players. The beneficial effects of this multidimensional program are greater for those classified as high risk. © 2018 The Author(s).","female; injury risk; robustness training; youth","Adolescent; Athletic Injuries; Biomechanical Phenomena; Child; England; Female; Genu Valgum; Humans; Knee; Leg; Movement; Range of Motion, Articular; Risk Factors; Soccer; Sports Medicine; adolescent; biomechanics; child; education; England; epidemiology; female; human; joint characteristics and functions; knee; leg; movement (physiology); physiology; risk factor; soccer; sport injury; sports medicine; valgus knee","Alentorn-Geli E., Myer G.D., Silvers H.J., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players: part 2. A review of prevention programs aimed to modify risk factors and to reduce injury rates, Knee Surg Sports Traumatol Arthrosc, 17, 8, pp. 859-879, (2009); Barengo N.C., Meneses-Echavez J.F., Ramirez-Velez R., Et al., The impact of the FIFA 11+ training program on injury prevention in football players: a systematic review, Int J Environ Res Pub Health, 11, 11, pp. 11986-12000, (2014); Bastos F.N., Vanderlei F.M., Vanderlei L.C.M., Et al., Investigation of characteristics and risk factors of sports injuries in young soccer players: a retrospective study, Int Arch Med, 6, 1, (2013); Chappell J.D., Limpisvasti O., Effect of a neuromuscular training program on the kinetics and kinematics of jumping tasks, Am J Sports Med, 36, 6, pp. 1081-1086, (2008); Chappell J.D., Yu B., Kirkendall D.T., Et al., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am J Sports Med, 30, 2, pp. 261-267, (2002); Dalleau G., Belli A., Viale F., Et al., A simple method for field measurements of leg stiffness in hopping, Int J Sports Med, 25, pp. 170-176, (2004); De Ste Croix M.B.A., Hughes J.D., Lloyd R.S., Et al., Leg stiffness in female soccer players: intersession reliability and the fatiguing effects of soccer-specific exercise, J Strength Cond Res, 31, 11, pp. 3052-3058, (2017); DiStefano L.J., Padua D.A., Blackburn J.T., Et al., Integrated injury prevention program improves balance and vertical jump height in children, J Strength Cond Res, 24, 2, pp. 332-342, (2010); Emery C.A., Roy T.O., Whittaker J.L., Et al., Neuromuscular training injury prevention strategies in youth sport: a systematic review and meta-analysis, Br J Sports Med, 49, 13, pp. 865-870, (2015); Faude O., Rossler R., Junge A., Football injuries in children and adolescent players: are there clues for prevention?, Sports Med, 43, 9, pp. 819-837, (2013); Griffin L.Y., Albohm M.J., Arendt E.A., Et al., Understanding and preventing noncontact anterior cruciate ligament injuries: a review of the Hunt Valley II Meeting, January 2005, Am J Sports Med, 34, 9, pp. 1512-1532, (2006); Hagglund M., Walden M., Risk factors for acute knee injury in female youth football, Knee Surg Sports Traumatol Arthrosc, 24, 3, pp. 737-746, (2016); Hass C., Schick E., Tillman M., Et al., Knee biomechanics during landings: comparison of pre and post-pubescent females, Med Sci Sports Exerc, 37, pp. 100-107, (2005); Hewett T.E., Ford K.R., Xu Y.Y., Et al., Effectiveness of neuromuscular training based on the neuromuscular risk profile, Am J Sports Med, 45, 9, pp. 2142-2147, (2017); Hewett T.E., Myer G.D., Ford K.R., Anterior cruciate ligament injuries in female athletes: part 1. Mechanisms and risk factors, Am J Sports Med, 34, 2, pp. 299-311, (2006); Hewett T.E., Stroupe A.L., Nance T.A., Et al., Plyometric training in female athletes: decreased impact forces and increased hamstring torques, Am J Sports Med, 24, 6, pp. 765-773, (1996); Hopkins W., Marshall S., Batterham A., Et al., Progressive statistics for studies in sports medicine and exercise science, Med Sci Sports Exerc, 41, pp. 3-12, (2009); Hopkins W.G., A scale of magnitudes for effect statistics, A New View of Statistics, (2002); Jayanthi N.A., LaBella C.R., Fischer D., Et al., Sports-specialized intensive training and the risk of injury in young athletes: a clinical case-control study, Am J Sports Med, 43, 4, pp. 794-801, (2015); Krustrup P., Aagaard P., Nybo L., Et al., Recreational football as a health promoting activity: a topical review, Scand J Med Science Sports, 20, pp. 1-13, (2010); Lloyd R.S., Oliver J.L., Hughes M.G., Et al., Reliability and validity of field-based measures of leg stiffness and reactive strength in youths, J Sports Sci, 27, pp. 1565-1573, (2009); Maffulli N., Longo U.G., Gougoulias N., Et al., Long-term health outcomes of youth sports injuries, Br J Sports Med, 44, 1, pp. 21-25, (2010); Mirwald R., Baxter-Jones A., Bailey D., Et al., An assessment of maturity from anthropometric measurements, Med Sci Sports Exerc, 34, pp. 689-694, (2002); Myer G.D., Brent J., Ford K.R., Et al., A pilot study to determine the effect of trunk and hip focused neuromuscular training on hip and knee isokinetic strength, Br J Sports Med, 42, 7, pp. 614-619, (2008); Myer G.D., Ford K.R., Brent J.L., Et al., Differential neuromuscular training effects on ACL injury risk factors in “high-risk” versus” low-risk” athletes, BMC Musculoskel Disord, 8, (2007); Myer G.D., Ford K.R., Khoury J., Et al., Biomechanics laboratory-based prediction algorithm to identify female athletes with high knee loads that increase risk of ACL injury, Br J Sports Med, 45, 4, pp. 245-252, (2011); Myer G.D., Ford K.R., Khoury J., Et al., Three-dimensional motion analysis validation of a clinic-based nomogram designed to identify high ACL injury risk in female athletes, Phys Sportsmed, 39, 1, pp. 19-28, (2011); Myer G.D., Ford K.R., McLean S.G., Et al., The effects of plyometric versus dynamic stabilization and balance training on lower extremity biomechanics, Am J Sports Med, 34, 3, pp. 445-455, (2006); Myer G.D., Ford K.R., Palumbo O.P., Et al., Neuromuscular training improves performance and lower-extremity biomechanics in female athletes, J Strength Cond Res, 19, 1, pp. 51-60, (2005); O'Kane J.W., Tencer A., Neradilek M., Et al., Is knee separation during a drop jump associated with lower extremity injury in adolescent female soccer players?, Am J Sports Med, 44, 2, pp. 318-323, (2016); Pomares-Noguera C., Ayala F., Robles-Palazon F.J., Training effects of the FIFA 11+ kids on physical performance in youth football players: a randomized control trial, Front Pediatr, 6, (2018); Rossler R., Donath L., Bizzini M., Et al., A new injury prevention programme for children’s football—FIFA 11+ Kids—can improve motor performance: a cluster-randomised controlled trial, J Sports Sci, 34, 6, pp. 549-556, (2016); Rossler R., Junge A., Bizzini M., Et al., A multinational cluster randomised controlled trial to assess the efficacy of “11+ Kids”: a warm-up programme to prevent injuries in children’s football, Sports Med, 22, pp. 1-12, (2017); Rumpf M.C., Cronin J., Injury incidence, body site, and severity in soccer players aged 6-18 years: implications for injury prevention, Strength Cond J, 34, 1, pp. 20-31, (2012); Van der Sluis A., Elferink-Gemser M.T., Brink M.S., Et al., Importance of peak height velocity timing in terms of injuries in talented soccer players, Int J Sports Med, 36, 4, pp. 327-332, (2015); Venturelli M., Schena F., Zanolla L., Et al., Injury risk factors in young soccer players detected by a multivariate survival model, J Sci Med Sport, 14, 4, (2011)","M. De Ste Croix; School of Sport and Exercise, University of Gloucestershire, Gloucester, Oxstalls Campus, Oxstalls Lane, GL2 9HW, United Kingdom; email: mdestecroix@glos.ac.uk","","SAGE Publications Inc.","03635465","","AJSMD","30227000","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-85055792627" "Chrisman S.P.; O'Kane J.W.; Polissar N.L.; Tencer A.F.; Mack C.D.; Levy M.R.; Schiff M.A.","Chrisman, Sara P. (53866043800); O'Kane, John W. (7003456104); Polissar, Nayak L. (7004531027); Tencer, Allan F. (7005320596); Mack, Christopher D. (7101696069); Levy, Marni R. (36128712500); Schiff, Melissa A. (7102067342)","53866043800; 7003456104; 7004531027; 7005320596; 7101696069; 36128712500; 7102067342","Strength and jump biomechanics of elite and recreational female youth soccer players","2012","Journal of Athletic Training","47","6","","609","615","6","10","10.4085/1062-6050-47.6.01","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870335742&doi=10.4085%2f1062-6050-47.6.01&partnerID=40&md5=83170432a000feaa2b2a82bd5ee2f9c2","Department of Pediatrics, University of Washington School of Medicine, Seattle, WA 98101, Suite 500/MPW 8-1, Box 35900, 1100 Olive Way, United States; Departments of Orthopedics and Sports Medicine, and Epidemiology, University of Washington School of Medicine, Seattle, WA, United States; Departments of Epidemiology, University of Washington School of Medicine, Seattle, WA, United States; Mountain-Whisper-Light Statistical Consulting, Seattle, WA, United States; Harborview Injury Prevention and Research Center, Seattle, WA, United States","Chrisman S.P., Department of Pediatrics, University of Washington School of Medicine, Seattle, WA 98101, Suite 500/MPW 8-1, Box 35900, 1100 Olive Way, United States; O'Kane J.W., Departments of Orthopedics and Sports Medicine, and Epidemiology, University of Washington School of Medicine, Seattle, WA, United States; Polissar N.L., Mountain-Whisper-Light Statistical Consulting, Seattle, WA, United States; Tencer A.F., Departments of Orthopedics and Sports Medicine, and Epidemiology, University of Washington School of Medicine, Seattle, WA, United States; Mack C.D., Harborview Injury Prevention and Research Center, Seattle, WA, United States; Levy M.R., Harborview Injury Prevention and Research Center, Seattle, WA, United States; Schiff M.A., Departments of Epidemiology, University of Washington School of Medicine, Seattle, WA, United States, Harborview Injury Prevention and Research Center, Seattle, WA, United States","Context: Most researchers investigating soccer injuries have studied elite athletes because they have greater athleticexposure hours than other athletes, but most youth participate at the recreational level. If risk factors for injury vary by soccer level, then recommendations generated using research with elite youth soccer players might not generalize to recreational players. Objective: To examine injury risk factors of strength and jump biomechanics by soccer level in female youth athletes and to determine whether research recommendations based on elite youth athletes could be generalized to recreational players. Design: Cross-sectional study. Setting: Seattle Youth Soccer Association. Patients or Other Participants: Female soccer players (N = 92) aged 11 to 14 years were recruited from 4 randomly selected elite (n = 50; age = 12.5 years, 95% confidence interval [95% CI]) = 12.3, 12.8 years; height = 157.8 cm, 95% CI = 155.2, 160.3 cm; mass = 49.9 kg, 95% CI = 47.3, 52.6 kg) and 4 randomly selected recreational (n = 42; age = 13.2 years, 95% CI=13.0, 13.5 years; height=161.1 cm, 95% CI=159.2, 163.1 cm; mass = 50.6 kg, 95% CI = 48.3, 53.0 kg) soccer teams. Main Outcome Measure(s): Players completed a questionnaire about demographics, history of previous injury, and soccer experience. Physical therapists used dynamometry to measure hip strength (abduction, adduction, extension, flexion) and knee strength (flexion, extension) and Sportsmetrics to measure vertical jump height and jump biomechanics. We compared all measurements by soccer level using linear regression to adjust for age and mass. Results: Elite players were similar to recreational players in all measures of hip and knee strength, vertical jump height, and normalized knee separation (a valgus estimate generated using Sportsmetrics). Conclusions: Female elite youth players and recreational players had similar lower extremity strength and jump biomechanics. This suggests that recommendations generated from research with elite youth soccer players could be generalized to recreational players. © by the National Athletic Trainers' Association, Inc. 2012.","Adolescents; Athletic injuries; Children; Muscle strength; Risk factors","Adolescent; Athletes; Athletic Injuries; Biomechanics; Child; Cross-Sectional Studies; Exercise Test; Female; Humans; Knee Joint; Motor Activity; Muscle Strength; Muscle, Skeletal; Questionnaires; Risk Factors; Soccer; Sports; adolescent; article; athlete; biomechanics; child; cross-sectional study; exercise test; female; human; injury; knee; motor activity; muscle strength; physiology; questionnaire; risk factor; skeletal muscle; soccer; sport; sport injury","2008-09 High School Athletics Participation Survey Results, (2010); Teens & Sports Participation in America 2001, (2010); Brink M.S., Visscher C., Arends S., Et al., Monitoring stress and recovery: New insights for the prevention of injuries and illnesses in elite youth soccer players, Br J Sports Med, 44, 11, pp. 809-815, (2010); 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Soderman K., Alfredson H., Pietila T., Werner S., Risk factors for leg injuries in female soccer players: A prospective investigation during one outdoor season, Knee Surg Sports Traumatol Arthrosc, 9, 5, pp. 313-321, (2001); Myer G.D., Ford K.R., Barber Foss K.D., Liu C., Nick T.G., Hewett T.E., The relationship of hamstrings and quadriceps strength to anterior cruciate ligament injury in female athletes, Clin J Sport Med, 19, 1, pp. 3-8, (2009); Hansen L., Bangsbo J., Twisk J., Klausen K., Development of muscle strength in relation to training level and testosterone in young male soccer players, J Appl Physiol, 87, 3, pp. 1141-1147, (1999); Le Gall F., Carling C., Williams M., Reilly T., Anthropometric and fitness characteristics of international, professional and amateur male graduate soccer players from an elite youth academy, J Sci Med Sport, 13, 1, pp. 90-95, (2010); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Beutler A., De La Motte S., Marshall S., Padua D., Boden B., Muscle strength and qualitative jump-landing differences in male and female military cadets: The Jump-ACL study, J Sports Sci Med, 8, pp. 663-671, (2009); Gissis I., Papadopoulos C., Kalapotharakos V.I., Et al., Strength and speed characteristics of elite, subelite, and recreational young soccer players, Res Sports Med, 14, 3, pp. 205-214, (2006); Malina R.M., Maturity status and injury risk in youth soccer players, Clin J Sport Med, 20, 2, (2010); Sedano S., Vaeyens R., Philippaerts R.M., Redondo J.C., Cuadrado G., Anthropometric and anaerobic fitness profile of elite and non-elite female soccer players, J Sports Med Phys Fitness, 49, 4, pp. 387-394, (2009); Smith R., Ford K.R., Myer G.D., Et al., Biomechanical and performance differences between female soccer athletes in National Collegiate Athletic Divisions i and III, J Athl Train, 42, 4, pp. 470-476, (2007); Schiff M.A., MacK C.D., Polissar N.L., Et al., Soccer injuries in female youth players: Comparison of injury surveillance by certified athletic trainers and Internet, J Athl Train, 45, 3, pp. 238-242, (2010); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J Bone Joint Surg Am, 86, 8, pp. 1601-1608, (2004); Hewett T.E., Myer G.D., Zazulak B.T., Hamstrings to quadriceps peak torque ratios diverge between sexes with increasing isokinetic angular velocity, J Sci Med Sport, 11, 5, pp. 452-459, (2008); Quatman C.E., Ford K.R., Myer G.D., Hewett T.E., Maturation leads to gender differences in landing force and vertical jump performance: A longitudinal study, Am J Sports Med, 34, 5, pp. 806-813, (2006); Wiggin M., Wilkinson K., Habetz S., Chorley J., Watson M., Percentile values of isokinetic peak torque in children six through thirteen years old, Pediatr Phys Ther, 18, 1, pp. 3-18, (2006); Pierce S.R., Lauer R.T., Shewokis P.A., Rubertone J.A., Orlin M.N., Testretest reliability of isokinetic dynamometry for the assessment of spasticity of the knee flexors and knee extensors in children with cerebral palsy, Arch Phys Med Rehabil, 87, 5, pp. 697-702, (2006); Barber-Westin S.D., Noyes F.R., Galloway M., Jump-land characteristics and muscle strength development in young athletes: A gender comparison of 1140 athletes 9 to 17 years of age, Am J Sports Med, 34, 3, pp. 375-384, (2006); Bohannon R.W., Andrews A.W., Interrater reliability of hand-held dynamometry, Phys Ther, 67, 6, pp. 931-933, (1987); Bohannon R.W., Hand-held compared with isokinetic dynamometry for measurement of static knee extension torque (parallel reliability of dynamometers), Clin Phys Physiol Meas, 11, 3, pp. 217-222, (1990); Fulcher M.L., Hanna C.M., Raina Elley C., Reliability of handheld dynamometry in assessment of hip strength in adult male football players, J Sci Med Sport, 13, 1, pp. 80-84, (2010); Martin H.J., Yule V., Syddall H.E., Dennison E.M., Cooper C., Aihie Sayer A., Is hand-held dynamometry useful for the measurement of quadriceps strength in older people? A comparison with the gold standard Biodex dynamometry, Gerontology, 52, 3, pp. 154-159, (2006); Merlini L., Massone E.S., Solari A., Morandi L., Reliability of handheld dynamometry in spinal muscular atrophy, Muscle Nerve, 26, 1, pp. 64-70, (2002); Thorborg K., Couppe C., Petersen J., Magnusson S.P., Homlich P., Eccentric hip adduction and abduction strength in elite soccer players and matched controls: A cross-sectional study, Br J Sports Med, 45, 1, pp. 10-13, (2011); Noyes F.R., Barber-Westin S.D., Fleckenstein C., Walsh C., West J., The drop-jump screening test: Difference in lower limb control by gender and effect of neuromuscular training in female athletes, Am J Sports Med, 33, 2, pp. 197-207, (2005); Baldon Rde M., Nakagawa T.H., Muniz T.B., Amorim C.F., MacIel C.D., Serrao F.V., Eccentric hip muscle function in females with and without patellofemoral pain syndrome, J Athl Train, 44, 5, pp. 490-496, (2009); Dolak K.L., Silkman C., Medina McKeon J., Et al., Hip strengthening prior to functional exercises reduces pain sooner than quadriceps strengthening in females with patellofemoral pain syndrome: A randomized clinical trial, J Orthop Sports Phys Ther, 41, 8, pp. 560-570, (2011); Jacobs C.A., Uhl T.L., Mattacola C.G., Shapiro R., Rayens W.S., Hip abductor function and lower extremity landing kinematics: Sex differences, J Athl Train, 42, 1, pp. 76-83, (2007); Stockton K.A., Wrigley T.V., Mengersen K.A., Et al., Test-retest reliability of hand-held dynamometry and functional tests in systemic lupus erythematosus, Lupus, 20, 2, pp. 144-150, (2011); Taeymans J., Clarys P., Abidi H., Hebbelinck M., Duquet W., Developmental changes and predictability of static strength in individuals of different maturity: A 30-year longitudinal study, J Sports Sci, 27, 8, pp. 833-841, (2009); Forbes H., Sutcliffe S., Lovell A., McNaughton L.R., Siegler J.C., Isokinetic thigh muscle ratios in youth football: Effect of age and dominance, Int J Sports Med, 30, 8, pp. 602-606, (2009)","S.P. Chrisman; Department of Pediatrics, University of Washington School of Medicine, Seattle, WA 98101, Suite 500/MPW 8-1, Box 35900, 1100 Olive Way, United States; email: sdow@u.washington.edu","","","10626050","","JATTE","23182007","English","J. Athl. Train.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-84870335742" "Lyle M.A.; Sigward S.M.; Tsai L.-C.; Pollard C.D.; Powers C.M.","Lyle, Mark A. (52664113100); Sigward, Susan M. (9735729200); Tsai, Liang-Ching (15519947300); Pollard, Christine D. (7006671942); Powers, Christopher M. (7103284208)","52664113100; 9735729200; 15519947300; 7006671942; 7103284208","Influence of maturation on instep kick biomechanics in female soccer athletes","2011","Medicine and Science in Sports and Exercise","43","10","","1948","1954","6","8","10.1249/MSS.0b013e31821a4594","https://www.scopus.com/inward/record.uri?eid=2-s2.0-80052961338&doi=10.1249%2fMSS.0b013e31821a4594&partnerID=40&md5=68fc9226cff7510bdc2c740f63703d3d","Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, School of Dentistry, University of Southern California, Los Angeles, CA 90089-9006, 1540 E. Alcazar St., United States; Department of Physical Therapy, California State University Long Beach, Long Beach, CA, United States","Lyle M.A., Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, School of Dentistry, University of Southern California, Los Angeles, CA 90089-9006, 1540 E. Alcazar St., United States; Sigward S.M., Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, School of Dentistry, University of Southern California, Los Angeles, CA 90089-9006, 1540 E. Alcazar St., United States; Tsai L.-C., Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, School of Dentistry, University of Southern California, Los Angeles, CA 90089-9006, 1540 E. Alcazar St., United States; Pollard C.D., Department of Physical Therapy, California State University Long Beach, Long Beach, CA, United States; Powers C.M., Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, School of Dentistry, University of Southern California, Los Angeles, CA 90089-9006, 1540 E. Alcazar St., United States","Purpose: The purpose of this study was to compare kicking biomechanics between young female soccer players at two different stages of physical maturation and to identify biomechanical predictors of peak foot velocity. Methods: Swing and stance limb kinematics and kinetics were recorded from 20 female soccer players (10 prepubertal, 10 postpubertal) while kicking a soccer ball using an angled two-step approach. Peak foot velocity as well as hip and knee kinematics and kinetics were compared between groups using independent-samples t-tests. Pearson correlation coefficients and stepwise multiple regression were used to identify predictors of peak foot velocity. Results: Peak foot velocity and the peak swing limb net hip flexor moment was significantly greater in the postpubertal group when compared with the prepubertal group (13.4 vs 11.6 m•s, P = 0.003; 1.22 vs 1.07 N•m•kg•m, P = 0.03). Peak stance limb hip and knee extensor moments were not different between groups. Although the peak swing limb hip and knee flexion angles were similar between groups, the postpubertal group demonstrated significantly less peak stance limb hip and knee flexion angles when compared with the prepubertal group (P < 0.001 and P = 0.045). Using a linear regression model, swing limb peak hip flexor moment and peak swing limb hip extension range of motion combined to explain 65% of the variance in peak foot velocity. Conclusions: Despite a difference in stance limb kinematics, similar swing limb kinematics between groups indicates that the prepubertal female athletes kicked with a mature swing limb kick pattern. The ability to generate a large hip flexor moment of the swing limb seems to be an important factor for improving kicking performance in young female soccer players. © 2011 by the American College of Sports Medicine.","athlete performance; foot velocity; joint angle; Joint moment; physical development","Adolescent; Athletes; Biomechanics; Child; Female; Foot; Hip; Humans; Knee; Range of Motion, Articular; Soccer; adolescent; article; athlete; biomechanics; child; female; foot; hip; human; joint characteristics and functions; knee; physiology; sport","Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, Journal of Sports Sciences, 24, 9, pp. 951-960, (2006); Barfield W.R., Effects of selected kinematic and kinetic variables on instep kicking with dominant and nondominant limbs, Journal of Human Movement Studies, 29, 6, pp. 251-272, (1995); Barfield W.R., The biomechanics of kicking in soccer, Clinics in Sports Medicine, 17, 4, pp. 711-728, (1998); Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, J Sport Sci Med, 1, pp. 72-9, (2002); Bloomfield J., Elliott B., Davies C., Development of the soccer kick: A cinematographical analysis, J Hum Mov Stud, 5, pp. 152-9, (1979); Bober T., Putnam C.A., Woodworth G.G., Factors influencing the angular velocity of a human limb segment, Journal of Biomechanics, 20, 5, pp. 511-521, (1987); Brophy R.H., Backus S.I., Pansy B.S., Lyman S., Williams R.J., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, J Orthop Sports Phys Ther, 37, 5, pp. 260-8, (2007); Butterfield S., Loovis E., Influence of age, sex, balance, and sport participation on development of kicking by children in grades K-8, Percept Mot Skills, 79, pp. 691-7, (1994); Clagg S.E., Warnock A., Thomas J.S., Kinetic analyses of maximal effort soccer kicks in female collegiate athletes, Sports Biomech, 8, 2, pp. 141-53, (2009); Davies P.L., Rose J.D., Motor skills of typically developing adolescents: Awkwardness or improvement?, Phys Occup Ther Pediatr, 20, 1, pp. 19-42, (2000); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, 4, pp. 293-299, (2002); Enoka R.M., Eccentric contractions require unique activation strategies by the nervous system, Journal of Applied Physiology, 81, 6, pp. 2339-2346, (1996); Katis A., Kellis E., Three-dimensional kinematics and ground reaction forces during the instep and outstep soccer kicks in pubertal players, J Sports Sci, 28, 11, pp. 1233-41, (2010); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J Sports Sci Med, 6, pp. 154-65, (2007); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Medicine and Science in Sports and Exercise, 36, 6, pp. 1017-1028, (2004); Kellis E., Katis A., Vrabas I.S., Effects of an intermittent exercise fatigue protocol on biomechanics of soccer kick performance, Scandinavian Journal of Medicine and Science in Sports, 16, 5, pp. 334-344, (2006); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, 6, pp. 917-927, (1998); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 441-8, (1988); Manolopoulos E., Papadopoulos C., Kellis E., Effects of combined strength and kick coordination training on soccer kick biomechanics in amateur players, Scandinavian Journal of Medicine and Science in Sports, 16, 2, pp. 102-110, (2006); Naito K., Fukui Y., Maruyama T., Multijoint kinetic chain analysis of knee extension during the soccer instep kick, Hum Mov Sci, 29, 2, pp. 259-76, (2010); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, 12, pp. 2028-2036, (2002); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, J Sports Sci, 24, 5, pp. 529-41, (2006); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, Journal of Sports Sciences, 24, 1, pp. 11-22, (2006); Orloff H., Sumida B., Chow J., Habibi L., Fujino A., Kramer B., Ground reaction forces and kinematics of plant leg position during instep kicking in male and female collegiate soccer players, Sports Biomech, 7, 2, pp. 238-47, (2008); Schlossberger N.M., Turner R.A., Irwin Jr. C.E., Validity of selfreport of pubertal maturation in early adolescents, J Adolesc Health, 13, 2, pp. 109-13, (1992); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomech, 4, 1, pp. 59-72, (2005); Takarada Y., Hirano Y., Ishige Y., Ishii N., Stretch-induced enhancement of mechanical power output in human multijoint exercise with countermovement, Journal of Applied Physiology, 83, 5, pp. 1749-1755, (1997); Tanner J.M., Growth at Adolescence, (1962); Winter D.A., Biomechanics and Motor Control of Human Movement, pp. 70-3, (2009)","C.M. Powers; Jacquelin Perry Musculoskeletal Biomechanics Research Laboratory, School of Dentistry, University of Southern California, Los Angeles, CA 90089-9006, 1540 E. Alcazar St., United States; email: powers@usc.edu","","","15300315","","MSCSB","21448083","English","Med. Sci. Sports Exerc.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-80052961338" "Akagi R.; Tohdoh Y.; Takahashi H.","Akagi, Ryota (23992148200); Tohdoh, Yukihiro (55027010100); Takahashi, Hideyuki (56672263600)","23992148200; 55027010100; 56672263600","Strength and size ratios between reciprocal muscle groups in the thigh and lower leg of male collegiate soccer players","2014","Clinical Physiology and Functional Imaging","34","2","","121","125","4","9","10.1111/cpf.12073","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893758907&doi=10.1111%2fcpf.12073&partnerID=40&md5=77207999e9f747d13c3daad095de2094","College of Systems Engineering and Science, Shibaura Institute of Technology, Saitama-shi, Saitama, Japan; Department of Sports Sciences, Japan Institute of Sports Sciences, Kita-ku, Tokyo, Japan; Department of Sports Medicine, Japan Institute of Sports Sciences, Kita-ku, Tokyo, Japan","Akagi R., College of Systems Engineering and Science, Shibaura Institute of Technology, Saitama-shi, Saitama, Japan, Department of Sports Sciences, Japan Institute of Sports Sciences, Kita-ku, Tokyo, Japan; Tohdoh Y., Department of Sports Medicine, Japan Institute of Sports Sciences, Kita-ku, Tokyo, Japan; Takahashi H., Department of Sports Sciences, Japan Institute of Sports Sciences, Kita-ku, Tokyo, Japan","Summary: This study investigated the strength and size ratios between reciprocal muscle groups in the thigh and lower leg of soccer players. In 11 male collegiate soccer players and 21 male non-soccer players, the joint torques developed during isometric maximal voluntary contractions of the knee extensors (TQKE) and flexors (TQKF), plantar flexors (TQPF) and dorsiflexors (TQDF) were determined using a dynamometer. The muscle volumes of the same muscles (i.e. MVKE, MVKF, MVPF and MVDF) were determined by magnetic resonance imaging. There were no significant differences in any of the joint torques or muscle volumes between soccer and non-soccer players. TQKE/TQKF was significantly lower for soccer players than for non-soccer players. On the other hand, no significant difference in TQPF/TQDF was found between soccer and non-soccer players. MVKE/MVKF and MVPF/MVDF for soccer players were not significantly different from those for non-soccer players. Additionally, there were no significant correlations between MVKE/MVKF and TQKE/TQKF and between MVPF/MVDF and TQPF/TQDF of soccer players. Thus, the strength ratios appear not to be affected by the size ratios between the knee extensors and flexors and between the plantar flexors and dorsiflexors in soccer players. © 2013 Scandinavian Society of Clinical Physiology and Nuclear Medicine. Published by John Wiley & Sons Ltd.","Dorsiflexors; Joint torque; Knee extensors; Knee flexors; Muscle volume; Plantar flexors","Athletes; Biomechanical Phenomena; Case-Control Studies; Hip Joint; Humans; Isometric Contraction; Knee Joint; Lower Extremity; Magnetic Resonance Imaging; Male; Muscle Strength; Muscle, Skeletal; Organ Size; Range of Motion, Articular; Soccer; Students; Torque; Young Adult; dorsiflexors; joint torque; knee extensors; knee flexors; muscle volume; plantar flexors; adult; article; athlete; Babinski reflex; college student; controlled study; flexor muscle; human; human experiment; knee function; leg muscle; lower leg; male; muscle function; muscle mass; muscle strength; normal human; nuclear magnetic resonance imaging; priority journal; soccer; thigh; torque","Akagi R., Takai Y., Ohta M., Kanehisa H., Kawakami Y., Fukunaga T., Muscle volume compared to cross-sectional area is more appropriate for evaluating muscle strength in young and elderly individuals, Age Ageing, 38, pp. 564-569, (2009); Akagi R., Tohdoh Y., Takahashi H., Muscle strength and size balances between reciprocal muscle groups in the thigh and lower leg for young men, Int J Sports Med, 33, pp. 386-389, (2012); Bamman M.M., Newcomer B.R., Larson-Meyer D.E., Weinsier R.L., Hunter G.R., Evaluation of the strength-size relationship in vivo using various muscle size indices, Med Sci Sports Exerc, 32, pp. 1307-1313, (2000); Baumhauer J.F., Alosa D.M., Renstrom A.F., Trevino S., Beynnon B., A prospective study of ankle injury risk factors, Am J Sports Med, 23, pp. 564-570, (1995); Becker R., Awiszus F., Physiological alterations of maximal voluntary quadriceps activation by changes of knee joint angle, Muscle Nerve, 24, pp. 667-672, (2001); Cometti G., Maffiuletti N.A., Pousson M., Chatard J.C., Maffulli N., Isokinetic strength and anaerobic power of elite, subelite and amateur French soccer players, Int J Sports Med, 22, pp. 45-51, (2001); Darrow C.J., Collins C.L., Yard E.E., Comstock R.D., Epidemiology of severe injuries among United States high school athletes: 2005-2007, Am J Sports Med, 37, pp. 1798-1805, (2009); Fukunaga T., Roy R.R., Shellock F.G., Hodgson J.A., Edgerton V.R., Specific tension of human plantar flexors and dorsiflexors, J Appl Physiol, 80, pp. 158-165, (1996); Fukunaga T., Miyatani M., Tachi M., Kouzaki M., Kawakami Y., Kanehisa H., Muscle volume is a major determinant of joint torque in humans, Acta Physiol Scand, 172, pp. 249-255, (2001); Gadeberg P., Andersen H., Jakobsen J., Volume of ankle dorsiflexors and plantar flexors determined with stereological techniques, J Appl Physiol, 86, pp. 1670-1675, (1999); Gur H., Akova B., Punduk Z., Kucukoglu S., Effects of age on the reciprocal peak torque ratios during knee muscle contractions in elite soccer players, Scand J Med Sci Sports, 9, pp. 81-87, (1999); Hoppenfeld S., Physical Examination of the Spine and Extremities, (1976); Knapik J.J., Bauman C.L., Jones B.H., Harris J.M., Vaughan L., Preseason strength and flexibility imbalances associated with athletic injuries in female collegiate athletes, Am J Sports Med, 19, pp. 76-81, (1991); Leatt P., Shephard R.J., Plyley M.J., Specific muscular development in under-18 soccer players, J Sports Sci, 5, pp. 165-175, (1987); Lynch N.A., Metter E.J., Lindle R.S., Fozard J.L., Tobin J.D., Roy T.A., Hurley B.F., Muscle quality. I. Age-associated differences between arm and leg muscle groups, J Appl Physiol, 86, pp. 188-194, (1999); Macaluso A., Nimmo M.A., Foster J.E., Cockburn M., McMillan N.C., De Vito G., Contractile muscle volume and agonist-antagonist coactivation account for differences in torque between young and older women, Muscle Nerve, 25, pp. 858-863, (2002); Magalhaes J., Oliveira J., Ascensao A., Soares J., Concentric quadriceps and hamstrings isokinetic strength in volleyball and soccer players, J Sports Med Phys Fitness, 44, pp. 119-125, (2004); Mohamed O., Perry J., Hislop H., Relationship between wire EMG activity, muscle length, and torque of the hamstrings, Clin Biomech (Bristol, Avon), 17, pp. 569-579, (2002); Morse C.I., Thom J.M., Davis M.G., Fox K.R., Birch K.M., Narici M.V., Reduced plantarflexor specific torque in the elderly is associated with a lower activation capacity, Eur J Appl Physiol, 92, pp. 219-226, (2004); Nygaard E., Houston M., Suzuki Y., Jorgensen K., Saltin B., Morphology of the brachial biceps muscle and elbow flexion in man, Acta Physiol Scand, 117, pp. 287-292, (1983); Oberg B., Moller M., Gillquist J., Ekstrand J., Isokinetic torque levels for knee extensors and knee flexors in soccer players, Int J Sports Med, 7, pp. 50-53, (1986); O'Brien T.D., Reeves N.D., Baltzopoulos V., Jones D.A., Maganaris C.N., The effects of agonist and antagonist muscle activation on the knee extension moment-angle relationship in adults and children, Eur J Appl Physiol, 106, pp. 849-856, (2009); Rochcongar P., Morvan R., Jan J., Dassonville J., Beillot J., Isokinetic investigation of knee extensors and knee flexors in young French soccer players, Int J Sports Med, 9, pp. 448-450, (1988); So C.H., Siu T.O., Chan K.M., Chin M.K., Li C.T., Isokinetic profile of dorsiflexors and plantar flexors of the ankle-a comparative study of élite versus untrained subjects, Br J Sports Med, 28, pp. 25-30, (1994); Stafford M.G., Grana W.A., Hamstring/quadriceps ratios in college football players: a high velocity evaluation, Am J Sports Med, 12, pp. 209-211, (1984); Thorstensson A., Grimby G., Karlsson J., Force-velocity relations and fiber composition in human knee extensor muscles, J Appl Physiol, 40, pp. 12-16, (1976); Worrell T.W., Karst G., Adamczyk D., Moore R., Stanley C., Steimel B., Steimel S., Influence of joint position on electromyographic and torque generation during maximal voluntary isometric contractions of the hamstrings and gluteus maximus muscles, J Orthop Sports Phys Ther, 31, pp. 730-740, (2001)","R. Akagi; College of Systems Engineering and Science, Shibaura Institute of Technology, Saitama-shi, Saitama 337-8570, 307 Fukasaku, Minuma-ku, Japan; email: rakagi12@sic.shibaura-it.ac.jp","","","1475097X","","CPFIC","23865492","English","Clin. Physiol. Funct. Imaging","Article","Final","","Scopus","2-s2.0-84893758907" "Marshall P.W.M.; Lovell R.; Siegler J.C.","Marshall, Paul W.M. (55556102000); Lovell, Ric (7102670658); Siegler, Jason C. (16029575300)","55556102000; 7102670658; 16029575300","Changes in passive tension of the hamstring muscles during a simulated soccer match","2016","International Journal of Sports Physiology and Performance","11","5","","594","601","7","10","10.1123/ijspp.2015-0009","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84985972807&doi=10.1123%2fijspp.2015-0009&partnerID=40&md5=3e7c23415875b19f55f98841571f35fd","School of Science and Health, University of Western Sydney, Penrith South, NSW, Australia","Marshall P.W.M., School of Science and Health, University of Western Sydney, Penrith South, NSW, Australia; Lovell R., School of Science and Health, University of Western Sydney, Penrith South, NSW, Australia; Siegler J.C., School of Science and Health, University of Western Sydney, Penrith South, NSW, Australia","Purpose: Passive muscle tension is increased after damaging eccentric exercise. Hamstring-strain injury is associated with damaging eccentric muscle actions, but no research has examined changes in hamstring passive muscle tension throughout a simulated sport activity. The authors measured hamstring passive tension throughout a 90-min simulated soccer match (SAFT90), including the warm-up period and every 15 min throughout the 90-min simulation. Methods: Passive hamstring tension of 15 amateur male soccer players was measured using the instrumented straight-leg-raise test. Absolute torque (Nm) and slope (Nm/°) of the recorded torque-angular position curve were used for data analysis, in addition to total leg range of motion (ROM). Players performed a 15-min prematch warm-up, then performed the SAFT90 including a 15-min halftime rest period. Results: Reductions in passive stiffness of 20-50° of passive hip flexion of 22.1-29.2% (P <.05) were observed after the warm-up period. During the SAFT90, passive tension increased in the latter 20% of the range of motion of 10.1-10.9% (P <.05) concomitant to a 4.5% increase in total hamstring ROM (P =.0009). Conclusions: The findings of this study imply that hamstring passive tension is reduced after an active warm-up that includes dynamic stretching but does not increase in a pattern suggestive of eccentric induced muscle damage during soccer-specific intermittent exercise. Hamstring ROM and passive tension increases are best explained by improved stretch tolerance. © 2016 Human Kinetics, Inc.","Biomechanics; Muscle damage; Strain injury","Biomechanical Phenomena; Hamstring Muscles; Humans; Male; Range of Motion, Articular; Soccer; Sprains and Strains; Torque; Warm-Up Exercise; Young Adult; biomechanics; hamstring muscle; human; injury; joint characteristics and functions; male; pathophysiology; physiology; soccer; torque; warm up; young adult","Whitehead N.P., Weerakkody N.S., Gregory J.E., Morgan D.L., Proske U., Changes in passive tension of muscle in humans and animals after eccentric exercise, J Physiol, 533, pp. 593-604, (2001); Whitting J.W., Steele J.R., McGee D.E., Munro B.J., Passive dorsiflexion stiffness is poorly correlated with passive dorsiflexion range of motion, J Sci Med Sport, 16, pp. 157-161, (2013); Palmer T.B., Jenkins N.D.M., Cramer J.T., Reliability of manual versus automated techniques for assessing passive stiffness of the posterior muscles of the hip and thigh, J Sports Sci, 31, 8, pp. 867-877, (2013); Hoang P.D., Herbert R.D., Gandevia S.C., Effects of eccentric exercise on passive mechanical properties of human gastrocnemius in vivo, Med Sci Sports Exerc, 39, 5, pp. 849-857, (2007); Janecki D., Jarocka E., Jaskolska A., Marusiak J., Jaskolski A., Muscle passive stiffness increases less after the second bout of eccentric exercise compared to the first bout, J Sci Med Sport, 14, pp. 338-343, (2011); Lacourpaille L., Nordez A., Hug F., Couturier A., Dibie C., Guilhem G., Time-course effect of exercise induced muscle damage on localized muscle mechanical properties assessed using elastography, Acta Physiol (Oxf), 211, pp. 135-146, (2014); McHugh M.P., Connolly D.A.J., Eston R.G., Kremenic I.J., Nicholas S.J., Gleim G.W., The role of passive muscle stiffness in symptoms of exercise-induced muscle damage, Am J Sports Med, 27, 5, pp. 594-599, (1999); Gregory J.E., Morgan D.L., Proske U., Tendon organs as monitors of muscle damage from eccentric contractions, Exp Brain Res, 151, pp. 346-355, (2003); Proske U., Morgan D.L., Muscle damage from eccentric exercise: Mechanism, mechanical signs, adaptation and clinical applications, J Physiol, 537, pp. 333-345, (2001); Reisman S., Allen T.J., Proske U., Changes in passive tension after stretch of unexercised and eccentrically exercised human plantarfexor muscles, Exp Brain Res, 193, pp. 545-554, (2009); Arnason A., Gudmundsson A., Dahl H.A., Soccer injuries in Iceland, Scand J Med Sci Sports, 6, pp. 40-45, (1996); Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: The UEFA injury study, Br J Sports Med, 45, pp. 553-558, (2011); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., The football association medical research programme: An audit of injuries in professional football - Analysis of hamstring injuries, Br J Sports Med, 38, pp. 36-41, (2004); Opar D.A., Williams M.D., Shield A.J., Hamstring strain injuries, Sports Med, 42, 3, pp. 209-226, (2012); Heiderscheit B.C., Hoerth D.M., Chumanov E.S., Swanson W.C., Thelen B.J., Thelen D.G., Identifying the time of occurrence of a hamstring strain injury during treadmill running: A case study, Clin Biomech (Bristol, Avon), 20, 10, pp. 1072-1078, (2005); Schache A.G., Wrigley T.V., Baker R., Pandy M.G., Biomechanical response to hamstring muscle strain injury, Gait Posture, 29, 2, pp. 332-338, (2009); Kuitunen S., Komi P.V., Kyrolainen H., Knee and ankle joint stiffness in sprint running, Med Sci Sports Exerc, 34, pp. 166-173, (2002); Yu B., Queen R.M., Abbey A.N., Liu Y., Moorman C.T., Garrett W., Hamstring muscle kinematics and activation during overground sprinting, J Biomech, 41, 15, pp. 3121-3126, (2008); Chumanov E.S., Heiderscheit B.C., Thelen B.J., The effect of speed and influence of individual muscles on hamstring mechanics during the swing phase of sprinting, J Biomech, 40, 16, pp. 3555-3562, (2007); Bizzini M., Impellizzeri F.M., Dvorak J., Et al., Physiological and performance responses to the ""FIFA 11+"" (part 1): Is it an appropriate warm-up?, J Sports Sci, 31, 13, pp. 1481-1490, (2013); Towlson C., Midgley A.W., Lovell R., Warm-up strategies of professional soccer players: Practitioners' perspectives, J Sports Sci, 31, 13, pp. 1393-1401, (2013); Small K., McNaughton L., Greig M., Lovell R., The effects of multidirectional soccer-specific fatigue on markers of hamstring injury risk, J Sci Med Sport, 13, pp. 120-125, (2010); Lovell R., Knapper B., Small K., Physiological responses to SAFT90: A new soccer-specific match simulation, Coach Sports Sci, 3, 2, (2008); Lovell R., Midgley A.W., Barrett S., Carter D., Small K., Effects of different half-time strategies on second half soccer-specific speed, power and dynamic strength, Scand J Med Sci Sports, 23, pp. 105-113, (2013); Halbertsma J.P.K., Goeken L.N.H., Hof A.L., Groothoff J.W., Eisma W.H., Extensibility and stiffness of the hamstrings in patients with nonspecific low back pain, Arch Phys Med Rehabil, 82, 2, pp. 232-238, (2001); Marshall P.W.M., Mannion J., Murphy B.A., Extensibility of the hamstrings is best explained by mechanical components of muscle contraction, not behavioral measures in individuals with chronic low back pain, PMR, 1, pp. 709-718, (2009); Marshall P.W.M., Siegler J.C., Lower hamstring extensibility in men compared to women is explained by differences in stretch tolerance, BMC Musculoskelet Disord, 15, (2014); Ylinen J., Kankainen T., Kautiainen H., Rezasoltani A., Kuukkanen T., Hakkinen A., Effect of stretching on hamstring muscle compliance, J Rehabil Med, 41, 1, pp. 80-84, (2009); Marshall P.W.M., Cashman A., Cheema B.S., A randomized controlled trial for the effect of passive stretching on measures of hamstring extensibility, passive stiffness, strength, and stretch tolerance, J Sci Med Sport, 14, 6, pp. 535-540, (2011); Watsford M.L., Murphy A., McLachlan K., Et al., A prospective study of the relationship between lower body stiffness and hamstring injury in professional Australian rules footballers, Am J Sports Med, 38, 10, pp. 2058-2064, (2010); Longo S., Ce E., Rampichini S., Devoto M., Limonta E., Esposito F., Mechanomyogram amplitude correlates with human gastrocnemius medialis muscle and tendon stiffness both before and after acute passive stretching, Exp Physiol, 99, 10, pp. 1359-1369, (2014); Marshall P.W., Lovell R., Jeppesen G.K., Andersen K., Siegler J.C., Hamstring muscle fatigue and central motor output during a simulated soccer match, PLoS One, 9, 7, (2014); Marshall P.W., Lovell R., Knox M.F., Brennan S.L., Siegler J.C., Hamstring fatigue and muscle activation changes during six sets of nordic hamstring exercise in amateur soccer players, J Strength Cond Res, 29, 11, pp. 3124-3133, (2015); Junge A., Lamprecht M., Stamm H., Et al., Countrywide campaign to prevent soccer injuries in swiss amateur players, Am J Sports Med, 39, pp. 57-63, (2011); Van Der Horst N., Smits D., Petersen J., Goedhart E.A., Backx F.J.G., The preventive effect of the nordic hamstring exercise on hamstring injuries in amateur soccer players, Am J Sports Med, 43, 6, pp. 1316-1323, (2015)","P.W.M. Marshall; School of Science and Health, University of Western Sydney, Penrith South, Australia; email: p.marshall@uws.edu.au","","Human Kinetics Publishers Inc.","15550265","","","26458020","English","Int. J. Sport Physiol. Perform.","Article","Final","","Scopus","2-s2.0-84985972807" "Strutzenberger G.; Edmunds R.; Nokes L.D.M.; Mitchell I.D.; Mellalieu S.D.; Irwin G.","Strutzenberger, Gerda (37105200100); Edmunds, Rob (57215426385); Nokes, Len D. M. (56867478700); Mitchell, Ian D. (57216070971); Mellalieu, Stephen D. (6603633341); Irwin, Gareth (8894962800)","37105200100; 57215426385; 56867478700; 57216070971; 6603633341; 8894962800","Player–surface interactions: perception in elite soccer and rugby players on artificial and natural turf","2022","Sports Biomechanics","21","9","","1021","1031","10","9","10.1080/14763141.2020.1720279","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85080941433&doi=10.1080%2f14763141.2020.1720279&partnerID=40&md5=c4ef4cff53d5926f27523dcf69d97d3f","Department of Sport Science and Kinesiology/USI, University of Salzburg, Salzburg, Austria; School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom; School of Engineering, Cardiff University, Cardiff, United Kingdom; People and Team Development, the Football Association, Burton Upon Trent, United Kingdom","Strutzenberger G., Department of Sport Science and Kinesiology/USI, University of Salzburg, Salzburg, Austria, School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom; Edmunds R., School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom; Nokes L.D.M., School of Engineering, Cardiff University, Cardiff, United Kingdom; Mitchell I.D., People and Team Development, the Football Association, Burton Upon Trent, United Kingdom; Mellalieu S.D., School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom; Irwin G., School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom","Artificial turf (AT) is common at all levels of soccer and rugby. Employing an interdisciplinary design, this study aimed to examine the extent to which the negative attitude commonly expressed by players concerning AT is based on the difference in technique between AT and natural turf (NT), or due to pre-existing biases. Thirty professional soccer and rugby players performed a defined set of movements with masked and normal perception conditions on NT and AT. Two-dimensional kinematic analysis (100 Hz) of characteristics in parallel to a psychological assessment of the impact of cognitive bias for a playing surface was assessed. No significant interaction effects between the level of perception and surface type were found. For AT, contact time (CT) was shorter across conditions, while for NT rugby players had longer CT during acceleration/deceleration phases and shorter flight times. Pre-existing negative bias against AT was found during the normal perception trials in the technology acceptance model (Usefulness and Ease of Use) and the general preference questions on how much the athlete would like to play a game on it. The results suggest that opinion was not driven by surface characteristics, but by a cognitive bias, players brought with them to the pitch. © 2020 Informa UK Limited, trading as Taylor & Francis Group.","artificial turf; biomechanics; football codes; Perception; psychometrics","Acceleration; Biomechanical Phenomena; Humans; Perception; Rugby; Soccer; article; athlete; biomechanics; cognitive bias; contact time; deceleration; football; human; human experiment; perception; pitch; psychologic assessment; psychometry; rugby; soccer; acceleration; biomechanics; perception; rugby","Andersson H., Ekblom B., Krustrup P., Elite football on artificial turf versus natural grass: Movement patterns, technical standards, and player impressions, Journal of Sports Sciences, 26, pp. 113-122, (2008); Burillo P., Gallardo L., Felipe J.L., Gallardo A.M., Artificial turf surfaces: Perception of safety, sporting feature, satisfaction and preference of football users, European Journal of Sport Science, 14, pp. S437-S447, (2014); Carey K.M., Negativity bias in attribution of external agency, Journal of Experimental Psychology: General, 138, pp. 535-545, (2009); Cohen J., Eta-squared and partial eta-squared in fixed factor anova designs, Educational and Psychological Measurement, 33, pp. 107-112, (1973); Davis F., Perceived usefulness, perceived ease of use, and user acceptance of information technology, MIS Quarterly, 13, pp. 319-340, (1989); Duncker K., The influence of past experience upon perceptual properties, The American Journal of Psychology, 52, pp. 255-265, (1939); Ekstrand J., Hagglund M., Fuller C.W., Comparison of injuries sustained on artificial turf and grass by male and female elite football players, Scandinavian Journal of Medicine and Science in Sports, 21, pp. 824-832, (2011); Ekstrand J., Timpka T., Hagglund M., Risk of injury in elite football played on artificial turf versus natural grass: A prospective two-cohort study, British Journal of Sports Medicine, 40, pp. 975-980, (2006); Elite players’ perception of football playing surfaces, 2014, pp. 1-5; Fiske S.T., Taylor S.E., Social cognition, (1991); Hughes M.G., Birdsey L., Meyers R., Newcombe D., Oliver J.L., Smith P.M., Kerwin D.G., Effects of playing surface on physiological responses and performance variables in a controlled football simulation, Journal of Sports Sciences, 31, pp. 878-886, (2013); Johannson F., Nilsson P.R., Swedish Football players and artificial turf - a study about their attitudes regarding artificial turf and related injuries, SFS Svenska Fotbollspelare, pp. 1-25, (2007); Mehrabian A., Pleasure-arousal-dominance: A general framework for describing and measuring individual differences in temperament, Current Psychology: Developmental, Learning, Personality, Social, 14, pp. 261-292, (1996); Newell K.M., Constraints on the development of coordination, pp. 341-361, (1986); Potthast W., Verhelst R., Hughes M., Stone K., De Clercq D., Football-specific evaluation of player-surface interaction on different football turf systems, Sports Technology, 3, pp. 5-12, (2010); Poulos C.C., Gallucci J., Gage W.H., Baker J., Buitrago S., Macpherson A.K., The perceptions of professional soccer players on the risk of injury from competition and training on natural grass and 3rd generation artificial turf, BMC Sports Science, Medicine and Rehabilitation, 6, (2014); Roberts J., Osei-Owusu P., Harland A., Owen A., Smith A., Elite football players’ perceptions of football turf and natural grass surface properties, Procedia Engineering, 72, pp. 907-912, (2014); Ronkainen J., Osei-Owusu P., Webster J., Harland A., Roberts J., Elite player assessment of playing surfaces for football, Procedia Engineering, 34, pp. 837-842, (2012); Sassi A., Stefanescu A., Menaspa P., Bosio A., Riggio M., Rampinini E., The cost of running on natural grass and artificial turf surfaces, Journal of Strength & Conditioning Research, 25, pp. 606-611, (2011); Strutzenberger G., Bath D., Dill S., Potthast W., Irwin G., The effect of restricting the visual sense on the kinematics and kinetics of a cutting maneuver, International Society of Biomechanics in Sports Conference Proceedings, 32, pp. 693-696, (2014); Strutzenberger G., Cao H.-M., Koussev J., Potthast W., Irwin G., Effect of turf on the cutting movement of female football players, Journal of Sport and Health Science, 3, pp. 314-319, (2014); Strutzenberger G., Nokes L.D., Irwin G., Artificial turf in football: An injury perspective, Football biomechanics, pp. 204-221, (2018); Strutzenberger G., Potthast W., Irwin G., Artificial turf in football: A performance perspective, Football biomechanics, pp. 222-237, (2018); Vickers J.N., Perception, cognition and decision training: The quiet eye in action, (2007); Vickers J.N., Advances in coupling perception and action: The quiet eye as a bidirectional link between gaze, attention, and action, Progress in Brain Research, 174, pp. 279-288, (2009); Williams J.H., Akogyrem E., Williams J.R., A meta-analysis of soccer injuries on artificial turf and natural grass, Journal of Sports Medicine, 2013, (2013); Young C., A comparison of test methods and player perceptions, Paper presented at the SportSURF 4th workshop, (2007); Zanetti E.M., Amateur football game on artificial turf: Players’ perceptions, Applied Ergonomics, 40, pp. 485-490, (2009)","G. Irwin; School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom; email: GIrwin@cardiffmet.ac.uk","","Routledge","14763141","","","32129721","English","Sports Biomech.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85080941433" "Vieira L.H.P.; De Andrade V.L.; Aquino R.L.; Moraes R.; Barbieri F.A.; Cunha S.A.; Bedo B.L.; Santiago P.R.","Vieira, Luiz H. Palucci (56789595600); De Andrade, Vitor L. (55675892700); Aquino, Rodrigo L. (57192645540); Moraes, Renato (8093103700); Barbieri, Fabio A. (35798078800); Cunha, Sérgio A. (16416879600); Bedo, Bruno L. (56790057800); Santiago, Paulo R. (36098423400)","56789595600; 55675892700; 57192645540; 8093103700; 35798078800; 16416879600; 56790057800; 36098423400","Construct validity of tests that measure kick performance for young soccer players based on cluster analysis: Exploring the relationship between coaches rating and actual measures","2017","Journal of Sports Medicine and Physical Fitness","57","12","","1613","1622","9","10","10.23736/S0022-4707.16.06863-8","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85033780031&doi=10.23736%2fS0022-4707.16.06863-8&partnerID=40&md5=64459cc3077cd5e25999b2fac28a7574","Biomechanics and Motor Control Laboratory (LaBioCoM), School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil; Post-Graduate Program in Rehabilitation and Functional Performance, Faculty of Medicine at Ribeirão Preto, University of São Paulo (FMRP), Av. Bandeirantes 3900, Monte Alegre, Ribeirão Preto SP, CEP 14049-900, Brazil; CIFI2D, Faculty of Sport, University of Porto, Porto, Portugal; Botafogo Futebol Clube, Youth Training Department, Ribeirão Preto, São Paulo, Brazil; Laboratory of Information, Vision and Action, Physical Education Department, São Paulo State University Júlio de Mesquita Filho, Bauru, São Paulo, Brazil; Laboratory of Instrumentation for Biomechanics (LIB), Faculty of Physical Education (FEF), State University of Campinas, Campinas, São Paulo, Brazil","Vieira L.H.P., Biomechanics and Motor Control Laboratory (LaBioCoM), School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil, Post-Graduate Program in Rehabilitation and Functional Performance, Faculty of Medicine at Ribeirão Preto, University of São Paulo (FMRP), Av. Bandeirantes 3900, Monte Alegre, Ribeirão Preto SP, CEP 14049-900, Brazil; De Andrade V.L., Post-Graduate Program in Rehabilitation and Functional Performance, Faculty of Medicine at Ribeirão Preto, University of São Paulo (FMRP), Av. Bandeirantes 3900, Monte Alegre, Ribeirão Preto SP, CEP 14049-900, Brazil; Aquino R.L., Post-Graduate Program in Rehabilitation and Functional Performance, Faculty of Medicine at Ribeirão Preto, University of São Paulo (FMRP), Av. Bandeirantes 3900, Monte Alegre, Ribeirão Preto SP, CEP 14049-900, Brazil, CIFI2D, Faculty of Sport, University of Porto, Porto, Portugal, Botafogo Futebol Clube, Youth Training Department, Ribeirão Preto, São Paulo, Brazil; Moraes R., Biomechanics and Motor Control Laboratory (LaBioCoM), School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil, Post-Graduate Program in Rehabilitation and Functional Performance, Faculty of Medicine at Ribeirão Preto, University of São Paulo (FMRP), Av. Bandeirantes 3900, Monte Alegre, Ribeirão Preto SP, CEP 14049-900, Brazil; Barbieri F.A., Laboratory of Information, Vision and Action, Physical Education Department, São Paulo State University Júlio de Mesquita Filho, Bauru, São Paulo, Brazil; Cunha S.A., Laboratory of Instrumentation for Biomechanics (LIB), Faculty of Physical Education (FEF), State University of Campinas, Campinas, São Paulo, Brazil; Bedo B.L., Post-Graduate Program in Rehabilitation and Functional Performance, Faculty of Medicine at Ribeirão Preto, University of São Paulo (FMRP), Av. Bandeirantes 3900, Monte Alegre, Ribeirão Preto SP, CEP 14049-900, Brazil; Santiago P.R., Biomechanics and Motor Control Laboratory (LaBioCoM), School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil, Post-Graduate Program in Rehabilitation and Functional Performance, Faculty of Medicine at Ribeirão Preto, University of São Paulo (FMRP), Av. Bandeirantes 3900, Monte Alegre, Ribeirão Preto SP, CEP 14049-900, Brazil","BACKGROUND: The main aim of this study was to verify the relationship between the classification of coaches and actual performance in field tests that measure the kicking performance in young soccer players, using the K-means clustering technique. METHODS: Twenty-three U-14 players performed 8 tests to measure their kicking performance. Four experienced coaches provided a rating for each player as follows: 1: poor; 2: below average; 3: Average; 4: very good; 5: excellent as related to three parameters (i.e. accuracy, power and ability to put spin on the ball). RESULTS: The scores interval established from k-means cluster metric was useful to originating five groups of performance level, since ANOVA revealed significant differences between clusters generated (P<0.01). Accuracy seems to be moderately predicted by the penalty kick, free kick, kicking the ball rolling and Wall Volley Test (0.44≤r≤0.56), while the ability to put spin on the ball can be measured by the free kick and the corner kick tests (0.52≤r≤0.61). Body measurements, age and PHV did not systematically influence the performance. The Wall Volley Test seems to be a good predictor of other tests. CONCLUSIONS: Five tests showed reasonable construct validity and can be used to predict the accuracy (penalty kick, free kick, kicking a rolling ball and Wall Volley Test) and ability to put spin on the ball (free kick and corner kick tests) when kicking in soccer. In contrast, the goal kick, kicking the ball when airborne and the vertical kick tests exhibited low power of discrimination and using them should be viewed with caution. © 2016 Edizioni Minerva Medica.","Adolescent; Aptitude; Motor skills","Adolescent; Athletic Performance; Biomechanical Phenomena; Exercise Test; Humans; Male; Reproducibility of Results; Soccer; analysis of variance; anthropometry; classification; cluster analysis; construct validity; human; motor performance; punishment; soccer player; adolescent; athletic performance; biomechanics; exercise test; male; physiology; procedures; reproducibility; soccer; validation study","Berjan Bacvarevic B., Pazin N., Bozic P.R., Mirkov D., Kukolj M., Jaric S., Evaluation of a composite test of kicking performance, J Strength Cond Res, 26, pp. 1945-1952, (2012); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, J Sports Sci, 28, pp. 805-817, (2010); Anderson D.I., Sidaway B., Coordination changes associated with practice of a soccer kick, Res Q Exerc Sport, 65, pp. 93-99, (1994); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med Sci Sports Exerc, 34, pp. 2028-2036, (2002); Barbieri F.A., Gobbi L.T., Santiago P.R., Cunha S.A., Dominant-non-dominant asymmetry of kicking a stationary and rolling ball in a futsal context, J Sports Sci, 33, pp. 1411-1419, (2015); Marques-Bruna P., Lees A., Scott M., Development of technique in soccer, Int J Coach Sci, 1, pp. 1-13, (2007); Ali A., Williams C., Hulse M., Strudwick A., Reddin J., Howarth L., Et al., Reliability and validity of two tests of soccer skill, J Sports Sci, 25, pp. 1461-1470, (2007); Finnoff J.T., Newcomer K., Laskowski E.R., A valid and reliable method for measuring the kicking accuracy of soccer players, J Sci Med Sport, 5, pp. 348-353, (2002); Marques M.C., Pereira F., Marinho D.A., Reis M., Cretu M., Van Den Tillaar R., A comparison of ball velocity in different kicking positions with dominant and non-dominant leg in junior soccer players, J Phys Ed Sport, 11, pp. 49-56, (2011); Rosch D., Hodgson R., Peterson T.L., Graf-Baumann T., Junge A., Chomiak J., Et al., Assessment and evaluation of football performance, Am J Sports Med, 28, pp. 29-39, (2000); Russell M., Benton D., Kingsley M., Reliability and construct validity of soccer skills tests that measure passing, shooting, and dribbling, J Sports Sci, 28, pp. 1399-1408, (2010); Vaeyens R., Malina R.M., Janssens M., Van Renterghem B., Bourgois J., Vrijens J., Et al., A multidisciplinary selection model for youth soccer: The Ghent Youth Soccer Project, Br J Sports Med, 40, pp. 928-934, (2006); Unnithan V., White J., Georgiou A., Iga J., Drust B., Talent identification in youth soccer, J Sports Sci, 30, pp. 1719-1726, (2012); Garcia-Pinillos F., Martinez-Amat A., Hita-Contreras F., Martinez-Lopez E.J., Latorre-Roman P.A., Effects of a contrast training program without external load on vertical jump, kicking speed, sprint, and agility of young soccer players, J Strength Cond Res, 28, pp. 2452-2460, (2014); Juarez D., Lopez De Subijana C., Mallo J., Navarro E., Acute effects of endurance exercise on jumping and kicking performance in top-class young soccer players, Eur J Sport Sci, 11, pp. 191-196, (2011); Wong P.L., Chamari K., Dellal A., Wisloff U., Relationship between anthropometric and physiological characteristics in youth soccer players, J Strength Cond Res, 23, pp. 1204-1210, (2009); Juarez D., Mallo J., De Subijana C., Navarro E., Kinematic analysis of kicking in young top-class soccer players, J Sports Med Phys Fitness, 51, pp. 366-373, (2011); Davids K., Lees A., Burwitz L., Understanding and measuring coordination and control in kicking skills in soccer: Implications for talent identification and skill acquisition, J Sports Sci, 18, pp. 703-714, (2000); Wickstrom R.L., Developmental kinesiology, Exerc Sports Sci Rev, 3, pp. 163-192, (1975); Coelho Silva E.M.J., Figueiredo A.J., Simoes F., Seabra A., Natal A., Vaeyens R., Et al., Discrimination of u-14 soccer players by level and position, Int J Sports Med, 31, pp. 790-796, (2010); O'Reagan S., Ali A., Wilson F., Impact of playing level on skill performance in early pubescent Irish soccer players, J Sports Sci Med, 6, pp. 187-191, (2007); Figueiredo A.J., Goncalves C.E., Silva C.E., Malina R.M.M.J., Youth soccer players, 11-14 years: Maturity, size, function, skill and goal orientation, Ann Hum Biol, 36, pp. 60-73, (2009); Malina R.M., Cumming S.P., Kontos A.P., Eisenmann J.C., Ribeiro B., Aroso J., Maturity-associated variation in sport-specific skills of youth soccer players aged 13-15 years, J Sports Sci, 23, pp. 515-522, (2005); Costa I.T., Garganta J., Greco P.J., Mesquita I., Maia J., Sistema de avaliação táctica no Futebol (FUT-SAT): Desenvolvimento e validação preliminar. 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Santiago; Post-Graduate Program in Rehabilitation and Functional Performance, Faculty of Medicine at Ribeirão Preto, University of São Paulo (FMRP), Monte Alegre, Ribeirão Preto SP, Av. Bandeirantes 3900, CEP 14049-900, Brazil; email: paulosantiago@usp.br","","Edizioni Minerva Medica","00224707","","JMPFA","27991485","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-85033780031" "Sánchez-Sánchez A.J.; Chirosa-Ríos L.J.; Chirosa-Ríos I.J.; García-Vega A.J.; Jerez-Mayorga D.","Sánchez-Sánchez, Antonio Jesús (57226079478); Chirosa-Ríos, Luis Javier (6503931491); Chirosa-Ríos, Ignacio Jesús (16645051800); García-Vega, Agustín José (57226070250); Jerez-Mayorga, Daniel (57212615340)","57226079478; 6503931491; 16645051800; 57226070250; 57212615340","Test-retest reliability of a functional electromechanical dynamometer on swing eccentric hamstring exercise measures in soccer players","2021","PeerJ","9","","e11743","","","","9","10.7717/peerj.11743","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85110345667&doi=10.7717%2fpeerj.11743&partnerID=40&md5=24e2066996d27c31ee1da381c9021c69","Department Physical Education and Sports., Faculty of Sport Sciences, Universidad de Granada, Granada, Spain; Faculty of Rehabilitation Sciences, Universidad Andres Bello, Santiago, Chile","Sánchez-Sánchez A.J., Department Physical Education and Sports., Faculty of Sport Sciences, Universidad de Granada, Granada, Spain; Chirosa-Ríos L.J., Department Physical Education and Sports., Faculty of Sport Sciences, Universidad de Granada, Granada, Spain; Chirosa-Ríos I.J., Department Physical Education and Sports., Faculty of Sport Sciences, Universidad de Granada, Granada, Spain; García-Vega A.J., Department Physical Education and Sports., Faculty of Sport Sciences, Universidad de Granada, Granada, Spain; Jerez-Mayorga D., Faculty of Rehabilitation Sciences, Universidad Andres Bello, Santiago, Chile","Background: The use of a functional electromechanical dynamometer (FEMD) has been proposed as a valid and effective tool to evaluate specific movement patterns. The aim of this study was to determine the reliability of FEMD on swing eccentric hamstring exercise (SEHE) measures in soccer players. Methods: Nineteen federated male soccer players (20.74 ± 4.04 years) performed the SEHE at three different isokinetic velocities (20–40–60 cm/s). These evaluations were conducted in four sessions, two for familiarization and two for registration. The average and maximum load (N) of the three isokinetic velocities was calculated from the values obtained from the FEMD (DynasystemÒ, Bangalore). Results: The main results of this research showed that the reliability was high for the average load in the condition of 40 cm/s, presenting the highest ICC value (0.94). For maximum load, reliability was high in the condition of 20 cm/s. The manifestation of the most reliable load was the maximum load (ICC = 0.91–0.87). Conclusions: FEMD (DynasystemÒ, Bangalore) is a reliable device to evaluate the eccentric strength of the hamstring muscles in soccer players. © 2021 PeerJ Inc.. All rights reserved.","Dynamometer; Eccentric; Hamstring; Isokinetic; Lower extremity; Soccer players","adult; ankle; Article; bicycle ergometry; biomechanics; clinical article; confidence interval; cross-sectional study; data analysis; dynamometry; exercise; gluteus muscle; goniometry; hamstring muscle; human; knee function; male; muscle contraction; muscle strength; running; test retest reliability; training; velocity; warm up; young adult","Al Attar WSA, Soomro N, Sinclair PJ, Pappas E, Sanders RH., Effect of injury prevention programs that include the nordic hamstring exercise on hamstring injury rates in soccer players: a systematic review and meta-analysis, Sports Medicine, 47, 5, pp. 907-916, (2017); Askling C, Karlsson J, Thorstensson A., Hamstring injury occurrence in elite soccer players after preseason strength training with eccentric overload, Scandinavian Journal of Medicine & Science in Sports, 13, 4, pp. 244-250, (2003); Bautista IJ, Vicente-Mampel J, Baraja-Vegas L, Segarra V, Martin F, Van Hooren B., The effects of the Nordic hamstring exercise on sprint performance and eccentric knee flexor strength: a systematic review and meta-analysis of intervention studies among team sport players, Journal of Science and Medicine in Sport, 49, 6, (2021); 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Suarez-Arrones L, Nakamura FY, Maldonado RA, Torreno N, Di Salvo V, Mendez-Villanueva A., Applying a holistic hamstring injury prevention approach in elite football: 12 seasons, single club study, Scandinavian Journal of Medicine & Science in Sports, 31, 4, pp. 861-874, (2021); Tous-Fajardo J, Maldonado RA, Quintana JM, Pozzo M, Tesch PA., The flywheel leg-curl machine: offering eccentric overload for hamstring development, International Journal of Sports Physiology and Performance, 1, 3, pp. 293-298, (2006); Van Dyk N, Behan FP, Whiteley R., Including the Nordic hamstring exercise in injury prevention programmes halves the rate of hamstring injuries: a systematic review and meta-analysis of 8459 athletes, British Journal of Sports Medicine, 53, 21, pp. 1362-1370, (2019); Van Dyk N, Witvrouw E, Bahr R., Interseason variability in isokinetic strength and poor correlation with Nordic hamstring eccentric strength in football players, Scandinavian Journal of Medicine & Science in Sports, 28, 8, pp. 1878-1887, (2018); Vatovec R, Kozinc Z, Sarabon N., Exercise interventions to prevent hamstring injuries in athletes: a systematic review and meta-analysis, European Journal of Sport Science, 7, pp. 1-29, (2019); Wiesinger HP, Gressenbauer C, Kosters A, Scharinger M, Muller E., Device and method matter: a critical evaluation of eccentric hamstring muscle strength assessments, Scandinavian Journal of Medicine & Science in Sports, 30, 2, pp. 217-226, (2020)","D. Jerez-Mayorga; Faculty of Rehabilitation Sciences, Universidad Andres Bello, Santiago, Chile; email: daniel.jerez@unab.cl","","PeerJ Inc.","21678359","","","","English","PeerJ","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85110345667" "Marks M.E.; Holcomb T.D.; Pritchard N.S.; Miller L.E.; Espeland M.A.; Miles C.M.; Moore J.B.; Foley K.L.; Stitzel J.D.; Urban J.E.","Marks, Madison E. (57863349300); Holcomb, Ty D. (57938138200); Pritchard, N. Stewart (57219384344); Miller, Logan E. (55955121600); Espeland, Mark A. (35236499700); Miles, Christopher M. (56723593400); Moore, Justin B. (35366936400); Foley, Kristie L. (7102856444); Stitzel, Joel D. (7003389866); Urban, Jillian E. (36119491100)","57863349300; 57938138200; 57219384344; 55955121600; 35236499700; 56723593400; 35366936400; 7102856444; 7003389866; 36119491100","Characterizing Exposure to Head Acceleration Events in Youth Football Using an Instrumented Mouthpiece","2022","Annals of Biomedical Engineering","50","11","","1620","1632","12","9","10.1007/s10439-022-03097-7","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85140414425&doi=10.1007%2fs10439-022-03097-7&partnerID=40&md5=407de6edc5151c85e6f540d7cab75da1","Department of Biomedical Engineering, Wake Forest University School of Medicine, 575 Patterson Avenue, Suite 530, Winston-Salem, 27101, NC, United States; Virginia Tech – Wake Forest University School of Biomedical Engineering and Sciences, Winston-Salem, NC, United States; Department of Biostatistics and Data Sciences, Wake Forest University School of Medicine, Winston-Salem, NC, United States; Department of Gerontology and Geriatric Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, United States; Department of Family and Community Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, United States; Department of Implementation Science, Wake Forest University School of Medicine, Winston-Salem, NC, United States; Department of Epidemiology & Prevention, Wake Forest University School of Medicine, Winston-Salem, NC, United States; Division of Public Health Sciences, Wake Forest University School of Medicine, Winston-Salem, NC, United States","Marks M.E., Department of Biomedical Engineering, Wake Forest University School of Medicine, 575 Patterson Avenue, Suite 530, Winston-Salem, 27101, NC, United States, Virginia Tech – Wake Forest University School of Biomedical Engineering and Sciences, Winston-Salem, NC, United States; Holcomb T.D., Department of Biomedical Engineering, Wake Forest University School of Medicine, 575 Patterson Avenue, Suite 530, Winston-Salem, 27101, NC, United States, Virginia Tech – Wake Forest University School of Biomedical Engineering and Sciences, Winston-Salem, NC, United States; Pritchard N.S., Department of Biomedical Engineering, Wake Forest University School of Medicine, 575 Patterson Avenue, Suite 530, Winston-Salem, 27101, NC, United States, Virginia Tech – Wake Forest University School of Biomedical Engineering and Sciences, Winston-Salem, NC, United States; Miller L.E., Department of Biomedical Engineering, Wake Forest University School of Medicine, 575 Patterson Avenue, Suite 530, Winston-Salem, 27101, NC, United States, Virginia Tech – Wake Forest University School of Biomedical Engineering and Sciences, Winston-Salem, NC, United States; Espeland M.A., Department of Biostatistics and Data Sciences, Wake Forest University School of Medicine, Winston-Salem, NC, United States, Department of Gerontology and Geriatric Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, United States; Miles C.M., Department of Family and Community Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, United States; Moore J.B., Department of Implementation Science, Wake Forest University School of Medicine, Winston-Salem, NC, United States, Department of Epidemiology & Prevention, Wake Forest University School of Medicine, Winston-Salem, NC, United States, Division of Public Health Sciences, Wake Forest University School of Medicine, Winston-Salem, NC, United States; Foley K.L., Department of Implementation Science, Wake Forest University School of Medicine, Winston-Salem, NC, United States, Division of Public Health Sciences, Wake Forest University School of Medicine, Winston-Salem, NC, United States; Stitzel J.D., Department of Biomedical Engineering, Wake Forest University School of Medicine, 575 Patterson Avenue, Suite 530, Winston-Salem, 27101, NC, United States, Virginia Tech – Wake Forest University School of Biomedical Engineering and Sciences, Winston-Salem, NC, United States; Urban J.E., Department of Biomedical Engineering, Wake Forest University School of Medicine, 575 Patterson Avenue, Suite 530, Winston-Salem, 27101, NC, United States, Virginia Tech – Wake Forest University School of Biomedical Engineering and Sciences, Winston-Salem, NC, United States","Understanding characteristics of head acceleration events (HAEs) in youth football is vital in developing strategies to improve athlete safety. This study aimed to characterize HAEs in youth football using an instrumented mouthpiece. Youth football athletes (ages 11–13) participating on two teams were enrolled in this study for one season. Each athlete was instrumented with a mouthpiece-based sensor throughout the season. HAEs were verified on film to ensure that mouthpiece-based sensors triggered during contact. The number of HAEs, peak resultant linear and rotational accelerations, and peak resultant rotational velocity were quantified. Mixed effects models were used to evaluate differences in mean kinematic metrics among all HAEs for session type, athlete position, and contact surface. A total of 5,292 HAEs were collected and evaluated from 30 athletes. The median (95th percentile) peak resultant linear acceleration, rotational acceleration, and rotational velocity was 9.5 g (27.0 g), 666.4 rad s−2 (1863.3 rad s−2), and 8.5 rad s−1 (17.4 rad s−1), respectively. Athletes experienced six (22) HAEs per athlete per session (i.e., practice, game). Competition had a significantly higher mean number of HAEs per athlete per session and mean peak rotational acceleration. Peak resultant rotational kinematics varied significantly among athlete positions. Direct head impacts had higher mean kinematics compared to indirect HAEs, from body collisions. The results of this study demonstrate that session type, athlete position, and contact surface (i.e., direct, indirect) may influence HAE exposure in youth football. © 2022, The Author(s) under exclusive licence to Biomedical Engineering Society.","American football; Head impact exposure; Head kinematics; Instrumented mouthguard; Video review","Acceleration; Adolescent; Athletes; Biomechanical Phenomena; Brain Concussion; Child; Football; Head; Head Protective Devices; Humans; Soccer; Acceleration; Sports; American footballs; Head accelerations; Head impact; Head impact exposure; Head kinematic; Instrumented mouthguard; Linear accelerations; Mouthguards; Rotational acceleration; Video review; acceleration; adolescent; Article; athlete; child; collision sport; competition; contact sport; controlled study; football; football player; head; head acceleration event; human; human experiment; juvenile; kinematics; male; normal human; position; rotation; velocity; videorecording; acceleration; biomechanics; brain concussion; head; helmet; soccer; Kinematics","Seahawks Tackling, (2014); Alois J., Bellamkonda S., Campolettano E.T., Et al., Do youth American football players intentionally use their heads for high-magnitude impacts?, Am. J. Sports Med., 47, 14, (2019); Alosco M.L., Tripodis Y., Jarnagin J., Et al., Repetitive head impact exposure and later-life plasma total tau in former National Football League players, Alzheimers Dement (Amst)., 7, pp. 33-40, (2016); Beckwith J.G., Greenwald R.M., Chu J.J., Measuring head kinematics in football: correlation between the head impact telemetry system and Hybrid III headform, Ann. Biomed. Eng., 40, 1, pp. 237-248, (2012); Bellamkonda S., Woodward S.J., Campolettano E., Et al., Head impact exposure in practices correlates with exposure in games for youth football players, J. Appl. Biomech., 34, 5, pp. 354-360, (2018); Caccese J.B., Kaminski T.W., Minimizing head acceleration in soccer: a review of the literature, Sports Med., 46, 11, pp. 1591-1604, (2016); Campolettano E.T., Gellner R.A., Egeli E., Rowson S., The effect of coaching and player position on head impact exposure in youth football players, Biomed. Sci. Instrum., 55, 2, (2019); Campolettano E.T., Gellner R.A., Rowson S., High-magnitude head impact exposure in youth football, J. Neurosurg. Pediatr., 20, 6, (2017); Choi G.B., Smith E.P., Duma S.M., Et al., Head impact exposure in youth and collegiate American football, Ann. Biomed. Eng., (2022); Cobb B.R., Urban J.E., Davenport E.M., Et al., Head impact exposure in youth football: elementary school ages 9–12 years and the effect of practice structure, Ann. Biomed. Eng., 41, 12, (2013); Daniel R.W., Rowson S., Duma S.M., Head impact exposure in youth football, Ann. Biomed. Eng., 40, 4, (2012); DiGuglielmo D.M., Kelley M.E., Espeland M.A., Et al., The effect of player contact characteristics on head impact exposure in youth football games, J. Appl. Biomech., 37, 2, pp. 145-155, (2021); Filben T.M., Pritchard N.S., Miller L.E., Et al., Characterization of head impact exposure in women’s collegiate soccer, J. Appl. Biomech., 38, 1, pp. 2-11, (2021); Gessel L.M., Fields S.K., Collins C.L., Dick R.W., Comstock R.D., Concussions among United States high school and collegiate athletes, J. Athletic Train., 42, 4, (2007); Gottschalk A.W., Andrish J.T., Epidemiology of sports injury in pediatric athletes, Sports Med. Arthrosc. Rev., 19, 1, pp. 2-6, (2011); Guskiewicz K.M., Weaver N.L., Padua D.A., Garrett W.E., Epidemiology of concussion in collegiate and high school football players, Am. J. Sports Med., 28, 5, pp. 643-650, (2000); Kelley M.E., Espeland M.A., Flood W.C., Et al., Comparison of head impact exposure in practice drills among multiple youth football teams, J. Neurosurg. Pediatr., 23, 3, pp. 381-389, (2018); Kelley M.E., Jones D.A., Espeland M.A., Et al., Physical performance measures correlate with head impact exposure in youth football, Med. Sci. Sports Exerc., 52, 2, pp. 449-456, (2020); Kelley M.E., Kane J.M., Espeland M.A., Et al., Head impact exposure measured in a single youth football team during practice drills, J. Neurosurgery, 20, 5, pp. 489-497, (2017); Kelley M.E., Urban J.E., Miller L.E., Et al., Head impact exposure in youth football: comparing age- and weight-based levels of play, J. Neurotrauma, 34, 11, pp. 1939-1947, (2017); King D., Hume P.A., Brughelli M., Gissane C., Instrumented mouthguard acceleration analyses for head impacts in amateur rugby union players over a season of matches, Am. J. Sports Med., 43, 3, pp. 614-624, (2015); Lamond L.C., Caccese J.B., Buckley T.A., Glutting J., Kaminski T.W., Linear acceleration in direct head contact across impact type, player position, and playing scenario in collegiate women’s soccer players, J. Athletic Train., 53, 2, (2018); Lee T.A., Lycke R.J., Lee P.J., Et al., Distribution of head acceleration events varies by position and play type in North American football, Clin J Sport Med., 31, 5, pp. e245-e250, (2021); Mihalik J.P., Guskiewicz K.M., Marshall S.W., Blackburn J.T., Cantu R.C., Greenwald R.M., Head impact biomechanics in youth hockey: comparisons across playing position, event types, and impact locations, Ann. Biomed. Eng., 40, 1, pp. 141-149, (2011); Montenigro P.H., Alosco M.L., Martin B.M., Et al., Cumulative Head impact exposure predicts later-life depression, apathy, executive dysfunction, and cognitive impairment in former high school and college football players, J. Neurotrauma., 34, 2, pp. 328-340, (2017); O'Connor K.L., Rowson S., Duma S.M., Broglio S.P., Head-impact–measurement devices: a systematic review, J. Athletic Train., 52, 3, (2017); Patton D.A., Huber C.M., Margulies S.S., Master C.L., Arbogast K.B., Comparison of video-identified head contacts and sensor-recorded events in high school soccer, J. Appl. Biomech., 37, 6, pp. 573-577, (2021); Rich A.M., Filben T.M., Miller L.E., Et al., Development, validation and pilot field deployment of a custom mouthpiece for head impact measurement, Ann. Biomed. Eng., 47, 10, pp. 2109-2121, (2019); Sarmiento K., Waltzman D., Devine O., Et al., Differences in head impact exposures between youth tackle and flag football games and practices: potential implications for prevention strategies, Am. J. Sports Med., 49, 8, pp. 2218-2226, (2021); Stamm J.M., Bourlas A.P., Baugh C.M., Et al., Age of first exposure to football and later-life cognitive impairment in former NFL players, Neurology, 84, 11, pp. 1114-1120, (2015); Stamm J.M., Koerte I.K., Muehlmann M., Et al., Age at first exposure to football is associated with altered corpus callosum white matter microstructure in former professional football players, J. Neurotrauma, 32, 22, pp. 1768-1776, (2015); Stemper B.D., Shah A.S., Pintar F.A., Et al., Head rotational acceleration characteristics influence behavioral and diffusion tensor imaging outcomes following concussion, Ann. Biomed. Eng., 43, 5, (2015); Swenson A.G., Pritchard N.S., Miller L.E., Urban J.E., Stitzel J.D., Characterization of head impact exposure in boys’ youth ice hockey, Res Sports Med., (2021); Tierney G.J., Kuo C., Wu L., Weaving D., Camarillo D., Analysis of head acceleration events in collegiate-level American football: a combination of qualitative video analysis and in-vivo head kinematic measurement, J. Biomech., 110, (2020); Tomblin B.T., Pritchard N.S., Filben T.M., Et al., Characterization of on-field head impact exposure in youth soccer, J. Appl. Biomech., 37, 1, pp. 36-42, (2020); Tooby J., Weaving D., Al-Dawoud M., Tierney G., Quantification of head acceleration events in rugby league: an instrumented mouthguard and video analysis pilot study, Sensors (Basel)., (2022); Urban J.E., Davenport E.M., Golman A.J., Et al., Head impact exposure in youth football: high school ages 14 to 18 years and cumulative impact analysis, Ann. Biomed. Eng., 41, 12, pp. 2474-2487, (2013); Urban J.E., Flood W.C., Zimmerman B.J., Et al., Evaluation of head impact exposure measured from youth football game plays, J. Neurosurg. Pediatr., 24, 2, pp. 190-199, (2019); Wu L.C., Kuo C., Loza J., Et al., Detection of American football head impacts using biomechanical features and support vector machine classification, Sci. Rep., (2017); Wu L.C., Nangia V., Bui K., Et al., In vivo evaluation of wearable head impact sensors, Ann. Biomed. Eng., 44, 4, (2016)","J.E. Urban; Department of Biomedical Engineering, Wake Forest University School of Medicine, Winston-Salem, 575 Patterson Avenue, Suite 530, 27101, United States; email: jurban@wakehealth.edu","","Springer","00906964","","ABMEC","36274103","English","Ann Biomed Eng","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85140414425" "Almonroeder T.G.; Jayawickrema J.; Richardson C.T.; Mercker K.L.","Almonroeder, Thomas Gus (55668374500); Jayawickrema, Jithmie (57226731763); Richardson, Carlee Tonia (58296645000); Mercker, Kristin Leigh (58297520400)","55668374500; 57226731763; 58296645000; 58297520400","THE INFLUENCE OF ATTENTIONAL FOCUS ON LANDING STIFFNESS IN FEMALE ATHLETES: A CROSS-SECTIONAL STUDY","2020","International Journal of Sports Physical Therapy","15","4","","510","518","8","11","10.26603/ijspt20200510","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85111011900&doi=10.26603%2fijspt20200510&partnerID=40&md5=3176a3c21857b2799d41a1af9dcd8283","University of Wisconsin – La Crosse, La Crosse, WI, United States; Trine University, Fort Wayne, IN, United States","Almonroeder T.G., University of Wisconsin – La Crosse, La Crosse, WI, United States; Jayawickrema J., Trine University, Fort Wayne, IN, United States; Richardson C.T., Trine University, Fort Wayne, IN, United States; Mercker K.L., Trine University, Fort Wayne, IN, United States","Background: Anterior cruciate ligament injury prevention often involves instructing athletes to reduce landing stiff-ness. Instructions promoting an external focus appear to result in superior motor performance for a wide range of tasks; however, the effect of attentional focus on landing stiffness has not been examined. Hypothesis/Purpose: The purpose of this study was to compare the influence of instructions promoting an internal focus vs. those promoting an external focus on landing stiffness. It was hypothesized that both types of instructions would reduce landing stiffness vs. landings performed prior to instruction. It was also hypothesized that participants would demonstrate a greater reduction in landing stiffness when provided with instructions promoting an external focus. Study Design: Cross-sectional, quasi-experimental Methods: Sixteen female athletes (basketball, soccer, volleyball) completed drop landings while force and kinematic data were collected. Participants first performed drop landings with their typical technique (baseline). They then received instructions promoting an internal focus and an external focus before performing additional drop landings. Peak force, time-to-peak force, leg stiffness, and hip, knee, and ankle sagittal plane angles were analyzed. Results: Both types of instructions resulted in lower landing forces, less leg stiffness, and greater hip and knee flexion versus at baseline. However, athletes demonstrated more knee flexion at the time of the peak force (59.4 ± 9.6° vs. 56.0 ± 9.5°) and less leg stiffness (69.5 ± 17.9 Nkg-1/m vs. 84.0 ± 38.1 Nkg-1/m) when provided with instructions promoting an external focus, compared to when they were provided with instructions promoting an internal focus. Conclusion: Instructions promoting an external focus appear to result in a greater reduction in landing stiffness. Clinicians should consider providing instructions promoting an external focus when training athletes to reduce lower extremity stiffness during drop landings. The findings from this study may help to inform clinicians involved in movement pattern re-training for female athletes. Level of Evidence: Level 3b. © 2020, North American Sports Medicine Institute. All rights reserved.","ACL injury; biomechanics; external focus; motor control; movement system","","Gornitzky AL, Lott A, Yellin JL, Et al., Sport-specific yearly risk and incidence of anterior cruciate ligament tears in high school athletes: a systematic review and meta-analysis, Am J Sports Med, 44, 10, pp. 2716-2723, (2016); Agel J, Rockwood T, Klossner D., Collegiate ACL injury rates across 15 sports: National Collegiate Athletic Association Injury Surveillance System data update (2004-2005 through 2012-2013), Clin J Sport Med, 26, 6, pp. 518-523, (2016); Sanders TL, Maradit Kremers H, Bryan AJ, Et al., Incidence of anterior cruciate ligament tears and reconstruction: a 21-year population-based study, Am J Sports Med, 44, 6, pp. 1502-1507, (2016); Mall NA, Chalmers PN, Moric M, Et al., Incidence and trends of anterior cruciate ligament reconstruction in the United States, Am J Sports Med, 42, 10, pp. 2363-2370, (2014); Boden BP, Dean GS, Feagin JA, Et al., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); 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Boden BP, Torg JS, Knowles SB, Et al., Video analysis of anterior cruciate ligament injury: abnormalities in hip and ankle kinematics, Am J Sports Med, 37, 2, pp. 252-259, (2009); Koga H, Nakamae A, Shima Y, Et al., Mechanisms for noncontact anterior cruciate ligament injuries: knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, 11, pp. 2218-2225, (2010); Padua DA, Distefano LJ., Sagittal plane knee biomechanics and vertical ground reaction forces are modified following ACL injury prevention programs: a systematic review, Sports Health, 1, 2, pp. 165-173, (2009); Benjaminse A, Otten E., ACL injury prevention, more effective with a different way of motor learning?, Knee Surg Sports Traumatol Arthrosc, 19, 4, pp. 622-627, (2011); Hunt C, Paez A, Folmar E., The impact of attentional focus on the treatment of musculoskeletal and movement disorders, Int J Sports Phys Ther, 12, 6, pp. 901-907, (2017); Johnson L, Burridge JH, Demain SH., Internal and external focus of attention during gait re-education: an observational study of physical therapist practice in stroke rehabilitation, Phys Ther, 93, 7, pp. 957-966, (2013); Durham K, Van Vliet PM, Badger F, Et al., Use of information feedback and attentional focus of feedback in treating the person with a hemiplegic arm, Physiother Res Int, 14, 2, pp. 77-90, (2009); Wulf G., Attentional focus and motor learning: a review of 15 years, Int Rev Sport Exerc Psychol, 6, 1, pp. 77-104, (2013); Gokeler A, Benjaminse A, Welling W, Et al., The effects of attentional focus on jump performance and knee joint kinematics in patients after ACL reconstruction, Phys Ther Sport, 16, 2, pp. 114-120, (2015); Welling W, Benjaminse A, Gokeler A, Et al., Enhanced retention of drop vertical jump landing technique: a randomized controlled trial, Hum Mov Sci, 45, pp. 84-95, (2016); Welling W, Benjaminse A, Gokeler A, Et al., Retention of movement technique: implications for primary prevention of ACL injuries, Int J Sports Phys Ther, 12, 6, pp. 908-920, (2017); Daniel DM, Stone ML, Dobson BE, Et al., Fate of the ACL-injured patient. 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Almonroeder; University of Wisconsin – La Crosse, Department of Health Professions, Physical Therapy Program, La Crosse, 1300 Badger St., 54601, United States; email: almonroeder.thomas@gmail.com","","North American Sports Medicine Institute","21592896","","","","English","Int. J. Sport. Phys. Ther.","Article","Final","","Scopus","2-s2.0-85111011900" "Pryhoda M.K.; Wathen R.J.; Dicharry J.; Shelburne K.B.; Feeney D.; Harrison K.; Davidson B.S.","Pryhoda, Moira K. (57208209947); Wathen, Rachel J. (57221787383); Dicharry, Jay (24831542100); Shelburne, Kevin B. (6601991041); Feeney, Daniel (57188750271); Harrison, Kathryn (57202257933); Davidson, Bradley S. (7402965749)","57208209947; 57221787383; 24831542100; 6601991041; 57188750271; 57202257933; 7402965749","Alternative upper configurations during agility-based movements: part 1, biomechanical performance","2021","Footwear Science","13","1","","91","103","12","9","10.1080/19424280.2020.1853824","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100191158&doi=10.1080%2f19424280.2020.1853824&partnerID=40&md5=412f46830a8b596a5b400b231c54df14","Department of Mechanical and Materials Engineering, Human Dynamics Laboratory, University of Denver, Denver, CO, United States; REP Biomechanics Lab, Rebound Physical Therapy, Bend, OR, United States; Performance Fit Laboratory, BOA Technology Inc, Denver, CO, United States","Pryhoda M.K., Department of Mechanical and Materials Engineering, Human Dynamics Laboratory, University of Denver, Denver, CO, United States; Wathen R.J., Department of Mechanical and Materials Engineering, Human Dynamics Laboratory, University of Denver, Denver, CO, United States; Dicharry J., REP Biomechanics Lab, Rebound Physical Therapy, Bend, OR, United States; Shelburne K.B., Department of Mechanical and Materials Engineering, Human Dynamics Laboratory, University of Denver, Denver, CO, United States; Feeney D., Performance Fit Laboratory, BOA Technology Inc, Denver, CO, United States; Harrison K., Performance Fit Laboratory, BOA Technology Inc, Denver, CO, United States; Davidson B.S., Department of Mechanical and Materials Engineering, Human Dynamics Laboratory, University of Denver, Denver, CO, United States","The objective of this research was to determine if three alternative shoe closures improve biomechanical performance measures compared to a standard lace closure in agility-based movements. NCAA Division 1 and club-level male athletes recruited from lacrosse, soccer, tennis, and rugby performed four court-based movements: Lateral Skater Jump Repeats (LSJ), Countermovement Jump Repeats (CMJ), Triangle Drop Step Drill (TDS), and Anterior-Posterior Drill (AP). Each athlete performed the movements in four shoe upper closures: Standard Closure, Lace Replacement, Y Wrap, and Tri Panel. Movement completion time, Ground contact time, peak eccentric rate of force development (RFD), peak concentric GRF, peak concentric COM power, eccentric work, and concentric work were measured. The Y Wrap configuration the Tri Panel configuration delivered improvements between 3 and 9% over the Standard Closure depending on the movement tested and variable of interest. The Lace Replacement had mixed results with some improvements and some declines in performance. This study allowed for the mechanical properties of the shoe bottom package to remain consistent across designs to examine if alternative upper configurations could enhance performance. We hypothesise that improved containment and possibly increased proprioception—due to the wrapping fit of the configurations influences these changes in performance. These findings suggest that the design and construction shoe upper is essential to consider in athletic shoe design. © 2021 Informa UK Limited, trading as Taylor & Francis Group.","athletic shoe; biomechanical performance; fit; Shoe closure; shoe design; shoe upper","Drills; Infill drilling; Tennis; Anterior posteriors; Biomechanical performance; Completion time; Countermovement; Design and construction; Ground contacts; Panel configurations; Rate of force development; Biomechanics","Argus C.K., Gill N.D., Keogh J.W., Blazevich A.J., Hopkins W.G., Kinetic and training comparisons between assisted, resisted, and free countermovement jumps, The Journal of Strength & Conditioning Research, 25, 8, pp. 2219-2227, (2011); Arnold J.B., Bishop C., Quantifying foot kinematics inside athletic footwear: A review, Footwear Science, 5, 1, pp. 55-62, (2013); Barnes R.A., Smith P.D., The role of footwear in minimizing lower limb injury, Journal of Sports Sciences, 12, 4, pp. 341-353, (1994); Bishop M., Fiolkowski P., Conrad B., Brunt D., Horodyski M., Athletic footwear, leg stiffness, and running kinematics, Journal of Athletic Training, 41, 4, pp. 387-392, (2006); Boppana A., Hoogkamer W., Kram R., Anderson A.P., Using dynamic foot morphology data to design spacesuit footwear, Footwear Science, 11, pp. S132-S4, (2019); Brauner T., Zwinzscher M., Sterzing T., Basketball footwear requirements are dependent on playing position, Footwear Science, 4, 3, pp. 191-198, (2012); Burkner P.C., brms: An R package for Bayesian multilevel models using stan, Journal of Statistical Software, 80, 1, pp. 1-28, (2017); Button K.S., Ioannidis J.P., Mokrysz C., Nosek B.A., Flint J., Robinson E.S., Munafo M.R., Power failure: Why small sample size undermines the reliability of neuroscience, Nature Reviews. Neuroscience, 14, 5, pp. 365-376, (2013); Cormack S.J., Newton R.U., McGuigan M.R., Doyle T.L., Reliability of measures obtained during single and repeated countermovement jumps, International Journal of Sports Physiology and Performance, 3, 2, pp. 131-144, (2008); Dicharry J.M., Franz J.R., Croce U.D., Wilder R.P., Riley P.O., Kerrigan D.C., Differences in static and dynamic measures in evaluation of talonavicular mobility in gait, Journal of Orthopaedic & Sports Physical Therapy, 39, 8, pp. 628-634, (2009); Gregory R.W., Axtell R.S., Robertson M.I., Lunn W.R., The effects of a carbon fiber shoe insole on athletic performance in collegiate athletes, Journal of Sports Science, 6, pp. 219-230, (2018); Hennig E.M., Sterzing T., The influence of soccer shoe design on playing performance: A series of biomechanical studies, Footwear Science, 2, 1, pp. 3-11, (2010); Jastifer J., Kent R., Crandall J., Sherwood C., Lessley D., McCullough K.A., Coughlin M.J., Anderson R.B., The athletic shoe in football: Apparel or protective equipment?, Sports Health, 9, 2, pp. 126-131, (2017); Jensen R.L., Ebben W.P., Quantifying plyometric intensity via rate of force development, knee joint, and ground reaction forces, The Journal of Strength & Conditioning Research, 21, 3, pp. 763-767, (2007); Kong D., Basketball footwear design: The guard position, integration of performance, (2018); Kouchi M., Kimura M., Mochimaru M., Deformation of foot cross-section shapes during walking, Gait & Posture, 30, 4, pp. 482-486, (2009); Kurz M.J., Stergiou N., The spanning set indicates that variability during the stance period of running is affected by footwear, Gait & Posture, 17, 2, pp. 132-135, (2003); Kuznetsova A., Brockhoff P.B., Christensen R.H., lmerTest package: Tests in linear mixed effects models, Journal of Statistical Software, 82, 13, pp. 1-26, (2017); Lam W.-K., Lee C.-C., Lee W.M., Ma Z.-H., Kong P.W., Segmented forefoot plate in basketball footwear: Does it influence performance and foot joint kinematics and kinetics?, Journal of Applied Biomechanics, 34, 1, pp. 31-38; Lam W.K., Sterzing T., Cheung J.T., Reliability of a basketball specific testing protocol for footwear fit and comfort perception, Footwear Science, 3, 3, pp. 151-158, (2011); Lamas L., Ugrinowitsch C., Rodacki A., Pereira G., Mattos E.C., Kohn A.F., Tricoli V., Effects of strength and power training on neuromuscular adaptations and jumping movement pattern and performance, The Journal of Strength & Conditioning Research, 26, 12, pp. 3335-3344, (2012); Lenth R., Singmann H., Love J., Buerkner P., Herve M., Emmeans: Estimated marginal means, aka least-squares means, R Package Version, 1, 1, (2018); Luke S.G., Evaluating significance in linear mixed-effects models in R, Behavior Research Methods, 49, 4, pp. 1494-1502, (2017); Marshall B.M., Moran K.A., Which drop jump technique is most effective at enhancing countermovement jump ability, “countermovement” drop jump or “bounce” drop jump?, Journal of Sports Sciences, 31, 12, pp. 1368-1374, (2013); McLellan C.P., Lovell D.I., Gass G.C., The role of rate of force development on vertical jump performance, The Journal of Strength & Conditioning Research, 25, 2, pp. 379-385, (2011); McPoil T.G., Athletic footwear: Design, performance and selection issues, Journal of Science and Medicine in Sport, 3, 3, pp. 260-267, (2000); Meyer C., Mohr M., Falbriard M., Nigg S.R., Nigg B.M., Influence of footwear comfort on the variability of running kinematics, Footwear Science, 10, 1, pp. 29-38, (2018); Onodera A.N., Neto W.P., Roveri M.I., Oliveira W.R., Sacco I.C., Immediate effects of EVA midsole resilience and upper shoe structure on running biomechanics: A machine learning approach, PeerJ, 5, (2017); Reinschmidt C., Nigg B.M., Current issues in the design of running and court shoes, Sportverletzung · Sportschaden, 14, 3, pp. 72-81, (2000); Robbins S., Waked E., Mcclaran J., Proprioception and stability: Foot position awareness as a function of age and footwear, Age and Ageing, 24, 1, pp. 67-72, (1995); Robbins S., Waked E., Rappel R., Ankle taping improves proprioception before and after exercise in young men, British Journal of Sports Medicine, 29, 4, pp. 242-247, (1995); Stefanyshyn D.J., Wannop J.W., The influence of forefoot bending stiffness of footwear on athletic injury and performance, Footwear Science, 8, 2, pp. 51-63, (2016); Sterzing T., Muller C., Hennig E.M., Milani T.L., Actual and perceived running performance in soccer shoes: A series of eight studies, Footwear Science, 1, 1, pp. 5-17, (2009); Van Lieshout K.G., Anderson J.G., Shelburne K.B., Davidson B.S., Intensity rankings of plyometric exercises using joint power absorption, Clinical Biomechanics, 29, 8, pp. 918-922, (2014); Vienneau J., Nigg S.R., Tomaras E.K., Enders H., Nigg B.M., Soccer shoe bending stiffness significantly alters game-specific physiology in a 25-minute continuous field-based protocol, Footwear Science, 8, 2, pp. 83-90, (2016); Worobets J., Wannop J.W., Influence of basketball shoe mass, outsole traction, and forefoot bending stiffness on three athletic movements, Sports Biomechanics, 14, 3, pp. 351-360, (2015)","","","Taylor and Francis Ltd.","19424280","","","","English","Footwear Sci.","Article","Final","","Scopus","2-s2.0-85100191158" "Van Laack W.","Van Laack, W. (6507126972)","6507126972","Experimental studies of the effectiveness of various shin guards in association football; [EXPERIMENTELLE UNTERSUCHUNGEN UBER DIE WIRKSAMKEIT VERSCHIEDENER SCHIENBEINSCHONER IM FUSSBALLSPORT]","1985","Zeitschrift fur Orthopadie und Ihre Grenzgebiete","123","6","","951","956","5","8","10.1055/s-2008-1044785","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0022156363&doi=10.1055%2fs-2008-1044785&partnerID=40&md5=84e126e3dff738f9538639dc2d7a7c70","Germany","Van Laack W., Germany","These experimental studies with protective shin-guards show, whether it is possible to protect soccer players' shins effectively, even to prevent shin-fractures. In simulating different forces, acting on shin-guard protected wooden rollers compared to non-protected ones, it could be shown, that injury-protection can be efficient due to stretching the acting forces over a longer period of time, so that the maximal acting force can be decisively reduced. It could be shown, that the greatest effect was seen on maximal forces of less than about 300 kp (3000 N), and that increasing the acting forces will soon reduce this effect. A comparison with forces which are able to fracture human tibial bones show, that this effect can sometimes even be great enough to prevent tibial fractures. Shin-guards greatest effect nevertheless lies in preventing the great majority of soft tissue damage.","","Athletic Injuries; Biomechanics; English Abstract; Human; Protective Devices; Soccer; Sports; Tibial Fractures; bone; human; injury; leg injury; nonbiological model; normal human; prevention; short survey; sport; article; biomechanics; protective equipment; sport injury; tibia fracture","","","","","00443220","","ZOIGA","3832682","German","Z. ORTHOP. IHRE GRENZGEB.","Article","Final","","Scopus","2-s2.0-0022156363" "Jandačka D.; Beremlijski P.","Jandačka, Daniel (24921295800); Beremlijski, Petr (6508139382)","24921295800; 6508139382","Determination of strength exercise intensities based on the load-power-velocity relationship","2011","Journal of Human Kinetics","28","1","","33","44","11","8","10.2478/v10078-011-0020-2","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79960278350&doi=10.2478%2fv10078-011-0020-2&partnerID=40&md5=6648d7d3a99779d1988ccda8800e2791","Human Motion Diagnostic Center, University of Ostrava, 70200, Varenska 40 A, Czech Republic; Department of Applied Mathematics, Faculty of Electrical Engineering and Computer Science, Technical University of Ostrava, Czech Republic","Jandačka D., Human Motion Diagnostic Center, University of Ostrava, 70200, Varenska 40 A, Czech Republic; Beremlijski P., Department of Applied Mathematics, Faculty of Electrical Engineering and Computer Science, Technical University of Ostrava, Czech Republic","The velocity of movement and applied load affect the production of mechanical power output and subsequently the extent of the adaptation stimulus in strength exercises. We do not know of any known function describing the relationship of power and velocity and load in the bench press exercise. The objective of the study is to find a function modeling of the relationship of relative velocity, relative load and mechanical power output for the bench press exercise and to determine the intensity zones of the exercise for specifically focused strength training of soccer players. Fifteen highly trained soccer players at the start of a competition period were studied. The subjects of study performed bench presses with the load of 0, 10, 30, 50, 70 and 90% of the predetermined one repetition maximum with maximum possible speed of movement. The mean measured power and velocity for each load (kg) were used to develop a multiple linear regression function which describes the quadratic relationship between the ratio of power (W) to maximum power (W) and the ratios of the load (kg) to one repetition maximum (kg) and the velocity (ṁs-1) to maximal velocity (ṁs-1). The quadratic function of two variables that modeled the searched relationship explained 74% of measured values in the acceleration phase and 75% of measured values from the entire extent of the positive power movement in the lift. The optimal load for reaching maximum power output suitable for the dynamics effort strength training was 40% of one repetition maximum, while the optimal mean velocity would be 75% of maximal velocity. Moreover, four zones: maximum power, maximum velocity, velocity-power and strength-power were determined on the basis of the regression function.","bench press; biomechanics; optimization; soccer","","Baker D., Nance S., Moore M., The load that maximizes the average mechanical power output during explosive bench press throws in highly trained athletes, Journal of Strength and Conditioning Research, 15, 1, pp. 20-24, (2001); Baker D., Nance S., Moore M., The load that maximizes the average mechanical power output during jump squats in power-trained athletes, Journal of Strength and Conditioning Research, 15, 1, pp. 92-97, (2001); Bonnans J.F., Gilbert J.C., Lemarechal C., Sagastizabal C.A., Numerical Optimization: Theoretical and Practical Aspects, (2006); Caldwell G.E., Muscle modeling, Research methods in Biomechanics, pp. 183-209, (2004); Carpinelli R.N., The size principle and a critical analysis of the unsubstantiated heavier-is-better recommendation for resistance training, J Exerc Sci Fit, 6, pp. 67-86, (2008); Cormie P., McBride J.M., McCaulley G.O., Validation of power measurement techniques in dynamic lower body resistance exercises, Journal of Applied Biomechanics, 23, 2, pp. 103-118, (2007); Cormie P., Mccaulley G.O., Triplett N.T., Mcbride J.M., Optimal loading for maximal power output during lower-body resistance exercises, Medicine and Science in Sports and Exercise, 39, 2, pp. 340-349, (2007); Hill A.V., The heat of shortening and the dynamic constants of muscle, Proceedings of the Royal Society, B126, pp. 136-195, (1938); Hori N., Newton R.U., Nosaka K., McGuigan M.R., Comparison of different methods of determining power output in weightlifting exercises, Strength and Conditioning Journal, 28, 2, pp. 34-40, (2006); Jandacka D., Uchytil J., Optimal load maximizes the mean mechanical power output during upper body exercise in highly trained soccer players, J Strength Cond Res; Jandacka D., Vaverka F., A regression model to determine load for maximum power output, Sport Biomech, 7, pp. 361-371, (2008); Jandacka D., Vaverka F., Validity of mechanical power measurement at bench press exercise, J Human Kinetics, 21, pp. 33-43, (2009); Jidovtseff B., Quievre J., Hanon C., Crielaard J., Inertial muscular profiles allow a more accurate training loads definition, Sci Sport, 24, pp. 91-96, (2009); Kawamori N., Crum A.J., Blumert P.A., Kulik J.R., Childers J.T., Wood J.A., Stone M.H., Haff G.G., Influence of different relative intensities on power output during the hang power clean: Identification of the optimal load, Journal of Strength and Conditioning Research, 19, 3, pp. 698-708, (2005); Kovaleski J., Heitman R., Scaffidi F., Fondren F., Effects of isokinetic velocity spectrum exercise on average power and total work, J Athl Training, 27, pp. 54-56, (1992); Kraemer W.J., Newton R.U., Training for muscular power, Physical Medicine and Rehabilitation Clinics of North America, 11, 2, pp. 341-368, (2000); Kraemer J.W., Ratamess A.N., Fry C.A., French N.D., Strength training: Development and evaluation of methodology, Physiological Assessment of Human Fitness, pp. 119-150, (2006); Li L., Olson M., Winchester J., A proposed method for determining peak power in the jump squat exercise, J Strength Cond Res., 22, pp. 326-331, (2008); Miller C., Développement des capacités musculaires, Entraǐnement de la force - spécificité et planification Les cahiers de l'Insep, pp. 49-84, (1997); Newton R.U., Murphy A.J., Humphries B.J., Wilson G.J., Kraemer W.J., Hakkinen K., Influence of load and stretch shortening cycle on the kinematics, kinetics and muscle activation that occurs during explosive upper-body movements, European Journal of Applied Physiology and Occupational Physiology, 75, 4, pp. 333-342, (1997); Thomas G., Kraemer W., Spiering B., Volek J., Anderson J., Maresh C., Maximal power at different percentages of one repetition maximum: Influence of resistance and gender, J Strength Cond Res, 21, pp. 336-342, (2007); Zatsiorsky V.M., Kinetics of Human Motion, pp. 528-529, (2002); Zatsiorsky V.M., Kraemer J.W., Science and Practice of Strength Training, pp. 194-195, (2006)","D. Jandačka; Human Motion Diagnostic Center, University of Ostrava, 70200, Varenska 40 A, Czech Republic; email: daniel.jandacka@osu.cz","","Termedia Publishing House Ltd.","16405544","","","","English","J. Hum. Kinet.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-79960278350" "Murray N.G.; D'Amico N.R.; Powell D.; Mormile M.E.; Grimes K.E.; Munkasy B.A.; Gore R.K.; Reed-Jones R.J.","Murray, Nicholas G. (56999177700); D'Amico, Nathan R. (57193564384); Powell, Douglas (36803356600); Mormile, Megan E. (57193561029); Grimes, Katelyn E. (57193565785); Munkasy, Barry A. (7801350317); Gore, Russell K. (36554089700); Reed-Jones, Rebecca J. (23036708600)","56999177700; 57193564384; 36803356600; 57193561029; 57193565785; 7801350317; 36554089700; 23036708600","ASB clinical biomechanics award winner 2016: Assessment of gaze stability within 24–48 hours post-concussion","2017","Clinical Biomechanics","44","","","21","27","6","8","10.1016/j.clinbiomech.2017.03.002","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85014908102&doi=10.1016%2fj.clinbiomech.2017.03.002&partnerID=40&md5=7458288deda4d600f0af493a69e6e9cb","School of Health and Kinesiology, College of Health and Human Sciences, Georgia Southern University, Statesboro, GA, United States; Department of Health, Human Performance, and Recreation, Office for Sport Concussion Research, University of Arkansas, Fayetteville, AR, United States; School of Health Studies, University of Memphis, Memphis, TN, United States; Atlanta, GA, United States; Department of Applied Human Sciences, Faculty of Science, University of Prince Edward Island, Charlottetown, Prince Edward Island, Canada","Murray N.G., School of Health and Kinesiology, College of Health and Human Sciences, Georgia Southern University, Statesboro, GA, United States; D'Amico N.R., Department of Health, Human Performance, and Recreation, Office for Sport Concussion Research, University of Arkansas, Fayetteville, AR, United States; Powell D., School of Health Studies, University of Memphis, Memphis, TN, United States; Mormile M.E., School of Health and Kinesiology, College of Health and Human Sciences, Georgia Southern University, Statesboro, GA, United States; Grimes K.E., School of Health and Kinesiology, College of Health and Human Sciences, Georgia Southern University, Statesboro, GA, United States; Munkasy B.A., School of Health and Kinesiology, College of Health and Human Sciences, Georgia Southern University, Statesboro, GA, United States; Gore R.K., Atlanta, GA, United States; Reed-Jones R.J., Department of Applied Human Sciences, Faculty of Science, University of Prince Edward Island, Charlottetown, Prince Edward Island, Canada","Background Approximately 90% of athletes with concussion experience a certain degree of visual system dysfunction immediately post-concussion. Of these abnormalities, gaze stability deficits are denoted as among the most common. Little research quantitatively explores these variables post-concussion. As such, the purpose of this study was to investigate and compare gaze stability between a control group of healthy non-injured athletes and a group of athletes with concussions 24–48 hours post-injury. Methods Ten collegiate NCAA Division I athletes with concussions and ten healthy control collegiate athletes completed two trials of a sport-like antisaccade postural control task, the Wii Fit Soccer Heading Game. During play all participants were instructed to minimize gaze deviations away from a central fixed area. Athletes with concussions were assessed within 24–48 post-concussion while healthy control data were collected during pre-season athletic screening. Raw ocular point of gaze coordinates were tracked with a monocular eye tracking device (240 Hz) and motion capture during the postural task to determine the instantaneous gaze coordinates. This data was exported and analyzed using a custom algorithm. Independent t-tests analyzed gaze resultant distance, prosaccade errors, mean vertical velocity, and mean horizontal velocity. Findings Athletes with concussions had significantly greater gaze resultant distance (p = 0.006), prosaccade errors (p < 0.001), and horizontal velocity (p = 0.029) when compared to healthy controls. Interpretation These data suggest that athletes with concussions had less control of gaze during play of the Wii Fit Soccer Heading Game. This could indicate a gaze stability deficit via potentially reduced cortical inhibition that is present within 24–48 hours post-concussion. © 2017 Elsevier Ltd","Concussion; Mild traumatic brain injury; Oculomotor; Vestibular ocular reflex","Adult; Athletes; Athletic Injuries; Awards and Prizes; Biomechanical Phenomena; Brain Concussion; Eye Movements; Female; Fixation, Ocular; Humans; Male; Reflex, Vestibulo-Ocular; Risk Factors; Young Adult; Brain; Sports; Concussion; Eye tracking devices; Gaze stabilities; Horizontal velocity; Mean vertical velocity; Mild traumatic brain injuries; Oculomotor; Vestibular ocular reflexes; adult; Article; athlete; biomechanics; brain concussion; clinical article; clinical assessment; controlled study; eye tracking; female; gaze; human; male; priority journal; saccadic eye movement; sport injury; symptom assessment; awards and prizes; brain concussion; eye fixation; eye movement; pathophysiology; physiology; risk factor; vestibuloocular reflex; young adult; Stability","Balaban C., Hoffer M.E., Szczupak M., Snapp H., Crawford J., Murphy S., Marshall K., Pelusso C., Knowles S., Kiderman A., Oculomotor, vestibular, and reaction time tests in mild traumatic brain injury, PLoS One, 11, 9, (2016); Broglio S.P., Collins M.W., Williams R.M., Mucha A., Kontos A.P., Current and emerging rehabilitation for concussion: a review of the evidence, Clin. Sports Med., 34, 2, pp. 213-231, (2015); Cifu D.X., Wares J.R., Hoke K.W., Wetzel P.A., Gitchel G., Carne W., Differential eye movements in mild traumatic brain injury versus normal controls, J. Head Trauma Rehabil., 30, 1, pp. 21-28, (2015); Ciuffreda K.J., Ludlam D., Thiagarajan P., Oculomotor diagnostic protocol for the mTBI population, Optometry (St. Louis, MO), 82, 2, pp. 61-63, (2011); Cullen K.E., The vestibular system: multimodal integration and encoding of self-motion for motor control, Trends Neurosci., 35, 3, pp. 185-196, (2012); Eierud C., Craddock R.C., Fletcher S., Aulakh M., King-Casas B., Kuehl D., LaConte S.M., Neuroimaging after mild traumatic brain injury: review and meta-analysis, Neuroimage Clin., 4, pp. 283-294, (2014); Gessel L.M., Fields S.K., Collins C.L., Dick R.W., Comstock R.D., Concussions among United States high school and collegiate athletes, J. Athl. 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Opt., 31, 5, pp. 456-468, (2011); Ventura R.E., Balcer L.J., Galetta S.L., The neuro-ophthalmology of head trauma, Lancet Neurol., 13, 10, pp. 1006-1016, (2014)","N.G. Murray; School of Health and Kinesiology, Georgia Southern University, Statesboro, PO Box 8076, 30460-8076, United States; email: nmurray@georgiasouthern.edu","","Elsevier Ltd","02680033","","CLBIE","28292694","English","Clin. Biomech.","Article","Final","","Scopus","2-s2.0-85014908102" "Kenny R.; Elez M.; Clansey A.; Virji-Babul N.; Wu L.C.","Kenny, Rebecca (57224691947); Elez, Marko (57418024000); Clansey, Adam (55364177300); Virji-Babul, Naznin (6602934805); Wu, Lyndia C. (56050329900)","57224691947; 57418024000; 55364177300; 6602934805; 56050329900","Head Impact Exposure and Biomechanics in University Varsity Women’s Soccer","2022","Annals of Biomedical Engineering","50","11","","1461","1472","11","10","10.1007/s10439-022-02914-3","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123124222&doi=10.1007%2fs10439-022-02914-3&partnerID=40&md5=95d954f8ca47f763f58a8a77187c2040","Department of Rehabilitation Sciences, The University of British Columbia, 2177 Wesbrook Mall, Vancouver, V6T 1Z3, BC, Canada; Department of Integrated Sciences, The University of British Columbia, 6356 Agricultural Rd Room 464, Vancouver, V6T 1Z2, BC, Canada; Department of Mechanical Engineering, The University of British Columbia, 6250 Applied Science Ln #2054, Vancouver, V6T 1Z4, BC, Canada; Department of Physical Therapy, The University of British Columbia, 2177 Wesbrook Mall, Vancouver, V6T 1Z3, BC, Canada","Kenny R., Department of Rehabilitation Sciences, The University of British Columbia, 2177 Wesbrook Mall, Vancouver, V6T 1Z3, BC, Canada; Elez M., Department of Integrated Sciences, The University of British Columbia, 6356 Agricultural Rd Room 464, Vancouver, V6T 1Z2, BC, Canada; Clansey A., Department of Mechanical Engineering, The University of British Columbia, 6250 Applied Science Ln #2054, Vancouver, V6T 1Z4, BC, Canada; Virji-Babul N., Department of Physical Therapy, The University of British Columbia, 2177 Wesbrook Mall, Vancouver, V6T 1Z3, BC, Canada; Wu L.C., Department of Mechanical Engineering, The University of British Columbia, 6250 Applied Science Ln #2054, Vancouver, V6T 1Z4, BC, Canada","Soccer is a unique sport where players purposefully and voluntarily use their unprotected heads to manipulate the direction of the ball. There are limited soccer head impact exposure data to further study brain injury risks. The objective of the current study was to combine validated mouthpiece sensors with comprehensive video analysis methods to characterize head impact exposure and biomechanics in university varsity women’s soccer. Thirteen female soccer athletes were instrumented with mouthpiece sensors to record on-field head impacts during practices, scrimmages, and games. Multi-angle video was obtained and reviewed for all on-field activity to verify mouthpiece impacts and identify contact scenarios. We recorded 1307 video-identified intentional heading impacts and 1011 video-verified sensor impacts. On average, athletes experienced 1.83 impacts per athlete-exposure, with higher exposure in practices than games/scrimmages. Median and 95th percentile peak linear and peak angular accelerations were 10.0, 22.2 g, and 765, 2296 rad/s2, respectively. Long kicks, top of the head impacts and jumping headers resulted in the highest impact kinematics. Our results demonstrate the importance of investigating and monitoring head impact exposure during soccer practices, as well as the opportunity to limit high-kinematics impact exposure through heading technique training and reducing certain contact scenarios. © 2022, The Author(s) under exclusive licence to Biomedical Engineering Society.","Female athletes; Head impact exposure; Head impact kinematics; Mouthpiece sensor; Repetitive head impacts; Soccer heading; Video verification","Acceleration; Athletes; Biomechanical Phenomena; Brain Concussion; Female; Head; Humans; Soccer; Universities; Biomechanics; Biophysics; Sports; Female athlete; Head impact; Head impact exposure; Head impact kinematic; Impact kinematics; Mouthpiece sensor; Repetitive head impact; Soccer heading; Video verification; acceleration; adult; analysis; angular acceleration; angular velocity; Article; biomechanics; exposure; female; head impact exposure; human; kinematics; linear acceleration; monitoring; soccer; soccer player; velocity; video analysis; young adult; athlete; biomechanics; brain concussion; head; injury; university; Kinematics","Babbs C.F., Biomechanics of heading a soccer ball: implications for player safety, ScientificWorldJournal., 1, pp. 281-322, (2001); Bartsch A., Benzel E., Miele V., Morr D., Prakash V., Impact ‘fingerprints’ and preliminary implications for an ‘intelligent mouthguard’ head impact dosimeter, Sport. 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Biomech., 34, 4, pp. 320-326, (2018); Soccer Federation U.S., Concussions and Head Injuries, (2018); Wang T., Kenny R., Wu L.C., Head impact sensor triggering bias introduced by linear acceleration thresholding, Ann. Biomed. Eng., 49, pp. 3189-3199, (2021); Witol A.D., Webbe F.M., Soccer heading frequency predicts neuropsychological deficits, Arch. Clin. Neuropsychol., 18, 4, pp. 397-417, (2003); Wu L.C., Et al., In vivo evaluation of wearable head impact sensors, Ann. Biomed. Eng., 44, 4, pp. 1234-1245, (2015); Wu L.C., Et al., In vivo evaluation of wearable head impact sensors, Ann. Biomed. Eng., 44, 4, pp. 1234-1245, (2016); Wu L.C., Et al., Bandwidth and sample rate requirements for wearable head impact sensors, J. Biomech., 49, 13, pp. 2918-2924, (2016)","L.C. Wu; Department of Mechanical Engineering, The University of British Columbia, Vancouver, 6250 Applied Science Ln #2054, V6T 1Z4, Canada; email: lwu@mech.ubc.ca","","Springer","00906964","","ABMEC","35041117","English","Ann Biomed Eng","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-85123124222" "Coulier B.","Coulier, Bruno (56248949500)","56248949500","Acute avulsion of the iliac crest apophysis in an adolescent indoor soccer","2015","JBR-BTR","99","2","","20","24","4","8","10.5334/jbr-btr.876","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84973511450&doi=10.5334%2fjbr-btr.876&partnerID=40&md5=5f1273769f8f6b6313a237540ed789bb","Clinique Saint-Luc, Bouge, Belgium","Coulier B., Clinique Saint-Luc, Bouge, Belgium","We report a typical case of acute avulsion of the anterior iliac crest apophysis diagnosed in an indoor football player. The injury occurred as a result of a sudden twist of the trunk while kicking. Plain radiographs made the diagnosis. Complementary CT with 3D reconstructions was preferred to ultrasound because of the very strong habitus - 110 kilograms for 1,73 meter - of the 15-year old adolescent. CT confirmed that occult chronic mechanical stress on the iliac apophysis had preceded the acute avulsion and also emphasized the crucial role of the tensor fascia lata in the mechanism of the injury. The patient was successfully treated conservatively. The case is presented with a short review of the literature. © 2015 The Author(s).","Apophyseal fracture; Apophysis; Avulsion fracture; Iliac crest; Pelvis","adolescent; Article; avulsion injury; case report; computer assisted tomography; echography; human; iliac crest apophysis; image reconstruction; male; mechanical stress; pelvis radiography; priority journal; soccer; tensor fascia lata muscle; avulsion injury; biomechanics; bone radiography; bone stress; conservative treatment; football player; iliac crest; pelvis injury; soccer; three dimensional imaging; ultrasound; x-ray computed tomography","Kjellin I., Stadnick M.E., Awh M.H., Orthopaedic magnetic resonance imaging challenge: apophyseal avulsions at the pelvis, Sports Health, 2, pp. 247-255, (2010); Hebert K.J., Laor T., Divine J.G., Et al., MRI appearance of chronic stress injury of the iliac crest apophysis in adolescent athletes, AJR Am J Roentgenol, 190, pp. 1487-1491, (2008); Vandervliet E.J., Vanhoenacker F.M., Snoeckx A., Gielen J.L., Van Dyck P., Parizel P.M., Sportsrelated acute and chronic avulsion injuries in children and adolescents with special emphasis on tennis, Br J Sports Med, 41, pp. 827-831, (2007); Kerssemakers S.P., Fotiadou A.N., de Jonge M.C., Et al., Sport injuries in the paediatric and adolescent patient: a growing problem, Pediatr Radiol, 39, pp. 471-484, (2009); Aksoy B., Ozturk K., Ensenyel C.Z., Et al., Avulsion of the iliac crest apophysis, Int J Sports Med, 19, pp. 76-78, (1998); Steerman J.G., Reeder M.T., Udermann B.E., Et al., Avulsion fracture of the iliac crest apophysis in a collegiate wrestler, Clin J Sport Med, 18, pp. 102-103, (2008); Lambert M.J., Fligner D.J., Avulsion of the iliac crest apophysis: a rare fracture in adolescent athletes, Ann Emerg Med, 22, pp. 1218-1220, (1993); Porr J., Lucaciu C., Birkett S., Avulsion fractures of the pelvis-a qualitative systematic review of the literature, J Can Chiropr Assoc, 55, pp. 247-255, (2011); Valdes M., Molins J., Acebes O., Avulsion fracture of the iliac crest in a football player, Scand J Med Sci Sports, 10, pp. 178-180, (2000)","B. Coulier; Clinique Saint-Luc, Bouge, Belgium; email: bcoulier.md@gmail.com","","ARSMB-KVBMG","17802393","","","","English","JBR-BRT","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-84973511450" "Augustus S.; Amca A.M.; Hudson P.E.; Smith N.","Augustus, Simon (57185741400); Amca, Arif Mithat (55135918800); Hudson, Penny E. (57224834909); Smith, Neal (26427089000)","57185741400; 55135918800; 57224834909; 26427089000","Improved accuracy of biomechanical motion data obtained during impacts using a time-frequency low-pass filter","2020","Journal of Biomechanics","101","","109639","","","","10","10.1016/j.jbiomech.2020.109639","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85078136693&doi=10.1016%2fj.jbiomech.2020.109639&partnerID=40&md5=18b680d46af066bb6d44e6de3b44ec18","Chichester Institute of Sport, University of Chichester, Chichester, United Kingdom; Faculty of Sport Sciences, Hacettepe University, Ankara, Turkey","Augustus S., Chichester Institute of Sport, University of Chichester, Chichester, United Kingdom; Amca A.M., Faculty of Sport Sciences, Hacettepe University, Ankara, Turkey; Hudson P.E., Chichester Institute of Sport, University of Chichester, Chichester, United Kingdom; Smith N., Chichester Institute of Sport, University of Chichester, Chichester, United Kingdom","Biomechanical motion data involving impacts are not adequately represented using conventional low-pass filters (CF). Time-frequency filters (TFF) are a viable alternative, but have been largely overlooked by movement scientists. We modified Georgakis and Subramaniam's (2009) fractional Fourier filter (MFrFF) and demonstrated it performed better than CFs for obtaining lower leg accelerations during football instep kicking. The MFrFF displayed peak marker accelerations comparable to a reference accelerometer during foot-to-ball impact (peak % error = −5.0 ± 11.4%), whereas CFs severely underestimated these peaks (30–70% error). During the non-impact phases, the MFrFF performed comparably to CFs using an appropriate (12–20 Hz) cut-off frequency (RMSE = 37.3 ± 7.6 m/s2 vs. 42.1 ± 11.4 m/s2, respectively). Since accuracy of segmental kinematics is fundamental for understanding human movement, the MFrFF should be applied to a range of biomechanical impact scenarios (e.g. locomotion, landing and striking motions) to enhance the efficacy of study in these areas. © 2020 Elsevier Ltd","Biomechanics; Butterworth filter; Error; Fractional Fourier domain filter; Motion analysis","Acceleration; Biomechanical Phenomena; Foot; Humans; Leg; Male; Mechanical Phenomena; Movement; Soccer; Biomechanics; Butterworth filters; Errors; Motion analysis; Biomechanical motions; Fractional fourier; Fractional Fourier domains; Human movements; Impact scenarios; Lower leg; Time frequency; adult; Article; biomechanics; controlled study; data accuracy; data processing; football player; human; human experiment; kinematics; leg movement; locomotion; male; normal human; priority journal; acceleration; biomechanics; foot; leg; mechanics; movement (physiology); physiology; soccer; Low pass filters","Alonso F.J., Castillo J.M., Pintado P., Application of singular spectrum analysis to the smoothing of raw kinematic signals, J. Biomech., 38, pp. 1085-1092, (2005); Ball K., Biomechanical considerations of distance kicking in Australian Rules football, Sports Biomech., 7, pp. 10-23, (2008); Bland J.M., Altman D.G., Measuring agreement in method comparison studies, Stat. Methods Med. Res., 8, pp. 135-160, (1999); Cohen J., Statistical power analysis for the behavioral sciences, (1988); Dorge H.C., Anderson T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, J. Sports Sci., 20, pp. 293-299, (2002); Georgakis A., Stergioulas L.K., Giakas G., Automatic algorithm for filtering kinematic signals with impacts in the Wigner representation, Med. Biol. Eng. Comput., 40, pp. 625-633, (2002); Georgakis A., Stergioulas L.K., Giakas G., Wigner filtering with smooth roll-off boundary for differentiation of noisy non-stationary signals, Signal Process., 82, pp. 1411-1415, (2002); Georgakis A., Subramaniam S.R., Estimation of the Second Derivative of Kinematic Impact Signals Using Fractional Fourier Domain Filtering, IEEE T. Signal Proces., 56, pp. 996-1004, (2009); Giakas G., Stergioulas L.K., Vourdas A., Time-frequency analysis and filtering of kinematic signals with impacts using the Wigner function: accurate estimation of the second derivative, J. Biomech., 33, pp. 567-574, (2000); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am. J. Sports Med., 33, pp. 492-501, (2005); Joyce C., Burnett A., Ball K., Methodological considerations for the 3D measurement of the X-factor and lower trunk movement in golf, Sports Biomech., 9, pp. 206-221, (2010); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J. Sport. Sci. Med., 6, pp. 154-165, (2007); Knudson D., Bahamonde R., Effect of endpoint conditions on position and velocity near impact in tennis, J. Sports Sci., 19, pp. 839-844, (2001); Marshall R.N., Elliott B.C., Long-axis rotation: the missing link in proximal-to-distal segmental sequencing, J. Sports Sci., 18, pp. 247-254, (2000); Milner C.E., Ferber R., Pollard C.D., Hamill J., Davis I.S., Biomechanical factors associated with tibial stress fracture in female runners, Med. Sci. Sports Exerc., 38, pp. 323-328, (2006); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in football, J. Sports Sci., 24, pp. 11-22, (2006); Ozaktas H.M., Kutay M.A., Mendlovic D., Introduction to the Fractional Fourier Transform and Its Applications, Advances in Imaging and Electron Physics, pp. 239-291, (1999); Pohl M.B., Mullineaux D.R., Milner C.E., Hamill J., Davis I.S., Biomechanical predictors of retrospective tibial stress fractures in runners, J. Biomech., 41, pp. 1160-1165, (2008); Robertson D.G.E., Dowling J., Design and responses of Butterworth and critically damped digital filters, J. Electromyogr. Kinesiol., 13, pp. 569-573, (2003); Shinkai H., Nunome H., Isokawa M., Ikegami Y., Ball impact dynamics of instep soccer kicking, Med. Sci. Sports Exerc., 41, pp. 889-897, (2009); Winter D.A., Biomechanics and motor control of human movement, (2009)","S. Augustus; Chichester Institute of Sport, University of Chichester, Chichester, College Lane, PO19 6PE, United Kingdom; email: s.augustus@chi.ac.uk","","Elsevier Ltd","00219290","","JBMCB","31983403","English","J. Biomech.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85078136693" "Katis A.; Kellis E.","Katis, Athanasios (23135001400); Kellis, Eleftherios (6603815400)","23135001400; 6603815400","Is soccer kick performance better after a ""faking"" (cutting) maneuver task?","2011","Sports Biomechanics","10","1","","35","45","10","10","10.1080/14763141.2010.547594","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952510327&doi=10.1080%2f14763141.2010.547594&partnerID=40&md5=7e0cec6b63668d259bbdcb78d51334ec","Laboratory of Neuromechanics, Department of Physical Education and Sports Sciences of Serres, Aristotle University of Thessaloniki, Ag. Ioannis, Serres, 62122, Greece","Katis A., Laboratory of Neuromechanics, Department of Physical Education and Sports Sciences of Serres, Aristotle University of Thessaloniki, Ag. Ioannis, Serres, 62122, Greece; Kellis E., Laboratory of Neuromechanics, Department of Physical Education and Sports Sciences of Serres, Aristotle University of Thessaloniki, Ag. Ioannis, Serres, 62122, Greece","Cutting in soccer is a common skill used to avoid the opponent's pressure but the potential effects of such a skill on instep kicking performance have not been previously investigated. The purpose of this study was to examine the differences in lower limb biomechanics between straight approach soccer kicks and kicks performed following a cutting maneuver task. Ten young amateur soccer players performed, in a random order, instep kicks after a two-step straight approach run and kicks after a double ""faking"" cutting maneuver task. The results showed that kicking after a cutting maneuver task displayed significantly lower ball speed values compared with the straight approach instep kicking (16.73 vs. 19.78 m/s, respectively; p < 0.05). Moreover, analysis of variance showed significant differences between the two kicking conditions in ankle, knee and hip joint displacements. The present study indicated that performing instep kicks after a double-cutting maneuver reduces ball and foot speed probably due to increasing joint frontal and transverse plane rotations. Improvements in the performance of the cutting maneuver task through training might result in better transfer of energy and speed to the kicking task thus permitting players to perform more powerful kicks under realistic game conditions. © 2011 Taylor & Francis.","Kicking; Kinematics; Soccer; Techniques","Adolescent; Analysis of Variance; Athletic Performance; Biomechanics; Humans; Imaging, Three-Dimensional; Lower Extremity; Movement; Soccer; adolescent; analysis of variance; article; athletic performance; biomechanics; human; leg; movement (physiology); physiology; sport; three dimensional imaging","Asai T., Carre M., Akatsuka T., Haake S., The curve kick of a football I: Impact with the foot, Sports Engineering, 5, pp. 183-192, (2002); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Barbieri F.A., Gobbi L.T., Santiago P.R., Cunha S.A., Performance comparisons of the kicking of stationary and rolling balls in a futsal context, Sports Biomechanics, 9, pp. 1-15, (2010); Barfield W., Effects of selected kinematic and kinetic variables on instep kicking with dominant and non dominant limbs, Journal of Human Movement Studies, 29, pp. 251-272, (1995); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Medicine and Science in Sports and Exercise, 33, pp. 1168-1175, (2001); Bull-Andersen T., Dorge H., Thomsen F., Collisions in soccer kicking, Sports Engineering, 2, pp. 121-125, (1999); Caligiuri P., High-performance soccer: Techniques and tactics for advanced play, (1997); Dorge H., Bull-Andersen T., Sorensen H., Simonsen E., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, pp. 293-299, (2002); Duffour W., Computer assisted scouting in soccer, Science and football II, pp. 160-166, (1993); Isokawa M., Lees A., A biomechanical analysis of the instep kick motion in soccer, Science and football, pp. 449-455, (1988); Jinshan X., Xiaoke C., Yamanaka K., Matsumoto M., Analysis of the goals in the 14th World Cup, Science and football II, pp. 202-205, (1993); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Science and Medicine, 6, pp. 154-165, (2007); Kellis E., Katis A., Vrabas I., Effects of an intermittent exercise fatigue protocol on biomechanics of soccer kick performance, Scandinavian Journal of Medicine and Science in Sports, 16, pp. 334-344, (2006); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, pp. 917-927, (1998); Masuda K., Kikuhara N., Demura S., Katsuta S., Yamanaka K., Relationship between muscle strength in various isokinetic movements and kick performance among soccer players, Journal of Sports Medicine and Physical Fitness, 45, pp. 44-52, (2005); McLean S.G., Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: Potential for injury in women, Medicine and Science in Sports and Exercise, 31, pp. 959-968, (1999); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, pp. 2028-2036, (2002); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 24, pp. 529-541, (2006); Olsen E., An analysis of goal scoring strategies in the World championship in Mexico, 1986, Science and football, pp. 373-376, (1988); Opavsky P., An investigation of linear and angular kinematics of the leg during two types of soccer kick, Science and football, pp. 456-459, (1988); Rand M.K., Ohtsuki T., EMG analysis of lower limb muscles in humans during quick change in running directions, Gait and Posture, 12, pp. 169-183, (2000); Zebis M.K., Bencke J., Andersen L.L., Dossing S., Alkjaer T., Magnusson S.P., Et al., The effects of neuromuscular training on knee joint motor control during sidecutting in female elite soccer and handball players, Clinical Journal of Sport Medicine, 18, pp. 329-337, (2008)","A. Katis; Laboratory of Neuromechanics, Department of Physical Education and Sports Sciences of Serres, Aristotle University of Thessaloniki, Ag. Ioannis, Serres, 62122, Greece; email: akatis@phed-sr.auth.gr","","","17526116","","","21560750","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-79952510327" "Rolley T.L.; Saunders N.; Bonacci J.; Keast M.; Fox A.S.","Rolley, Tess L. (58177594900); Saunders, Natalie (36697145100); Bonacci, Jason (35331631200); Keast, Meghan (57392954000); Fox, Aaron S. (55699175100)","58177594900; 36697145100; 35331631200; 57392954000; 55699175100","Video analysis of anterior cruciate ligament injury situations in the women’s Australian football league","2023","Science and Medicine in Football","7","2","","106","123","17","7","10.1080/24733938.2022.2076897","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85131411393&doi=10.1080%2f24733938.2022.2076897&partnerID=40&md5=99904910cf88a8dd3534a8b4102e02a4","Centre for Sport Research, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia","Rolley T.L., Centre for Sport Research, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia; Saunders N., Centre for Sport Research, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia; Bonacci J., Centre for Sport Research, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia; Keast M., Centre for Sport Research, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia; Fox A.S., Centre for Sport Research, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia","Background: Anterior cruciate ligament (ACL) injury rates in the Women’s Australian Football League (AFLW) are alarmingly high. Understanding injuries within their sporting context is important to develop effective injury prevention strategies, yet there is currently little knowledge of how ACL injuries occur to AFLW players. This study addressed the common scenarios and characteristics of AFLW ACL injuries. Methods: Online match and AFLW club injury reports identified 38 ACL injury cases. After excluding injuries where footage was unavailable (i.e. training, pre-season games), a video analysis of 21 match ACL injuries from the 2017–2020 AFLW seasons was performed. We examined match characteristics, and the player’s movements and body postures preceding and at the estimated time of injury. Descriptive frequencies and relative proportions were determined across the assessed categories. Results: Non-contact ACL injuries were frequently observed (n = 13, 61.9%), while contact preceding the injury event (i.e. indirect contact) was also common (n = 10, 47.6%). The most common game situation was direct defence (i.e. defending an opponent in possession) (n = 14, 66.7%). Sidestep cutting was the most prevalent movement (n = 11, 52.4%), with this commonly performed while applying defensive pressure (n = 6 of 11, 54.6%). Conclusion: Sidestep cutting when applying defensive pressure is the most common non-contact ACL injury scenario in the AFLW. Preceding contact potentially contributing to a player’s loss of balance was another prominent AFLW scenario. AFLW players may benefit from injury prevention programs emphasising appropriate sidestep cutting technique during reactive defensive scenarios, and maintenance of lower limb postures known to withstand knee loading relative to the sporting task. © 2022 Informa UK Limited, trading as Taylor & Francis Group.","ACL; AFLW; biomechanics; injury; injury prevention","Anterior Cruciate Ligament Injuries; Australia; Female; Football; Humans; Knee Joint; Soccer; anterior cruciate ligament injury; Australia; female; football; human; injury; knee; soccer","AFL Injury Report, (2017); AFLW Injury Report, Australian Football League - Womens, (2019); AFL Injury Report, (2019); AFL Injury Report. 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International Society of Biomechanics in Sport, pp. 148-151, (2010); Walden M., Krosshaug T., Bjorneboe J., Andersen T.E., Faul O., Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: a systematic video analysis of 39 cases, Br J Sports Med, 49, 22, pp. 1452-1460, (2015); Webster K.E., Hewett T.E., Feller J.A., Anterior cruciate ligament injuries in Australian rules football: incidence, prevention and return to play outcomes, Open Access J Sports Med, 12, pp. 33-41, (2021); Weltin E., Gollhofer A., Mornieux G., Effects of perturbation or plyometric training on core control and knee joint loading in women during lateral movements, Scand J Med Sci Sports, 27, 3, pp. 299-308, (2017); Xu D., Jiang X., Cen X., Baker J.S., Gu Y., Single-leg landings following a volleyball spike may increase the risk of anterior cruciate ligament injury more than landing on both-legs, Applied Sciences, 11, 1, (2020); Yom J.P., Simpson K.J., Arnett S.W., Brown C.N., The effects of a lateral in-flight perturbation on lower extremity biomechanics during drop landings, J Appl Biomech, 30, 5, pp. 655-662, (2014); Yoshida N., Kunugi S., Mashimo S., Okuma Y., Masunari A., Miyazaki S., Hisajima T., Miyakawa S., Effect of forefoot strike on lower extremity muscle activity and knee joint angle during cutting in female team handball players, Sports Med Open, 2, (2015)","T.L. Rolley; Centre for Sport Research, School of Exercise and Nutrition Sciences, Deakin University, 75 Pigdons Road, Waurn Ponds, 3216, Australia; email: tlrolley@deakin.edu.au","","Taylor and Francis Ltd.","24733938","","","35544763","English","Sci. Med. Footb.","Article","Final","","Scopus","2-s2.0-85131411393" "Daneshjoo A.; Abu Osman N.A.; Sahebozamani M.; Yusof A.","Daneshjoo, Abdolhamid (30267523100); Abu Osman, Noor Azuan (8511221500); Sahebozamani, Mansour (37005126200); Yusof, Ashril (35331324700)","30267523100; 8511221500; 37005126200; 35331324700","Analysis of jumping-landing manoeuvers after different speed performances in soccer players","2015","PLoS ONE","10","11","e0143323","","","","11","10.1371/journal.pone.0143323","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84963791304&doi=10.1371%2fjournal.pone.0143323&partnerID=40&md5=7bf0dd3b3fc1f888048498b5ab3194ea","Department of Sports Injuries and Corrective Exercises, Faculty of Physical Education and Sport Science, Shahid Bahonar University of Kerman, Kerman, Iran; Department of Biomedical Engineering, University of Malaya, Kuala Lumpur, Malaysia; Sports Centre, University of Malaya, Kuala Lumpur, Malaysia","Daneshjoo A., Department of Sports Injuries and Corrective Exercises, Faculty of Physical Education and Sport Science, Shahid Bahonar University of Kerman, Kerman, Iran; Abu Osman N.A., Department of Biomedical Engineering, University of Malaya, Kuala Lumpur, Malaysia; Sahebozamani M., Department of Sports Injuries and Corrective Exercises, Faculty of Physical Education and Sport Science, Shahid Bahonar University of Kerman, Kerman, Iran; Yusof A., Sports Centre, University of Malaya, Kuala Lumpur, Malaysia","Purpose: Running at high speed and sudden change in direction or activity stresses the knee. Surprisingly, not many studies have investigated the effects of sprinting on knee's kinetics and kinematics of soccer players. Hence, this study is aimed to investigate indices of injury risk factors of jumping-landing maneuvers performed immediately after sprinting in male soccer players. Methods: Twenty-three collegiate male soccer players (22.1±1.7 years) were tested in four conditions; vertical jump (VJ), vertical jump immediately after slow running (VJSR), vertical jump immediately after sprinting (VJFR) and double horizontal jump immediately after sprinting (HJFR). The kinematics and kinetics data were measured using Vicon motion analyzer (100Hz) and two Kistler force platforms (1000Hz), respectively. Results: For knee flexion joint angle, (p = 0.014, η = 0.15) and knee valgus moment (p = 0.001, η = 0.71) differences between condition in the landing phase were found. For knee valgus joint angle, a main effect between legs in the jumping phase was found (p = 0.006, η = 0.31), which suggests bilateral deficit existed between the right and left lower limbs. Conclusion: In brief, the important findings were greater knee valgus moment and less knee flexion joint angle proceeding sprint (HJFR & VJFR) rather than no sprint condition (VJ) present an increased risk for knee injuries. These results seem to suggest that running and sudden subsequent jumping-landing activity experienced during playing soccer may negatively change the knee valgus moment. Thus, sprinting preceding a jump task may increase knee risk factors such as moment and knee flexion joint angle. © 2015 Daneshjoo et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.","","Adult; Athletic Performance; Biomechanical Phenomena; Humans; Knee Joint; Male; Soccer; Young Adult; adult; Article; athlete; human; jumping; jumping landing maneuver; kinematics; kinetics; knee flexion joint angle; knee function; knee injury; knee valgus moment; male; musculoskeletal system parameters; physical performance; risk factor; running; velocity; athletic performance; biomechanics; knee; physiology; soccer; young adult","Christou M., Smilios I., Sotiropoulos K., Volaklis K., Pilianidis T., Tokmakidis S.P., Effects of resistance training on the physical capacities of adolescent soccer players, J Strength Cond Res., 20, 4, pp. 783-791, (2006); Little T., Williams A.G., Effects of differential stretching protocols during warm-ups on high speed motor capacities in professional soccer players, J Strength Cond Res., 20, 1, pp. 203-207, (2006); Adams G.M., Beam W.C., Exercise Physiology: Laboratory Manual, (1994); Bahr R., Holme I., Risk factors for sports injuries - A methodological approach, Br J Sports Med., 37, 5, pp. 384-392, (2003); Bahr R., Krosshaug T., Understanding injury mechanisms: A key component of preventing injuries in sport, Br J Sports Med., 39, 6, pp. 324-329, (2005); Wong P., Hong Y., Soccer injury in the lower extremities, Br J Sports Med., 39, 8, pp. 473-482, (2005); Rahnama N., Bambaeichi E., Daneshjoo A.H., The epidemiology of knee injuries in Iranian male professional soccer players, Sport Sci Health, 5, 1, pp. 9-14, (2009); Daneshjoo A., Mokhtar A.H., Rahnama N., Yusof A., The effects of injury prevention warm-up programmes on knee strength in male soccer players, Biol Sport, 30, 4, pp. 281-288, (2013); Hootman J.M., Albohm M.J., Anterior cruciate ligament injury prevention and primary prevention of knee osteoarthritis, J Athl Train., 47, 5, pp. 589-590, (2012); Fauno P., Jakobsen B.W., Mechanism of anterior cruciate ligament injuries in soccer, Int J Sports Med., 27, 1, pp. 75-79, (2006); Alentorn-Geli E., Myer G.D., Silvers H.J., Samitier G., Romero D., Lazaro-Haro C., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players. 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(8682074600); Patel, Dipesh S. (57210521384)","8682074600; 57210521384","Optimum projection angle for attaining maximum distance in a soccer punt kick","2011","Journal of Sports Science and Medicine","10","1","","203","214","11","10","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952463920&partnerID=40&md5=85a5c271e570784a7b32b7761edc73b6","Centre for Sports Medicine and Human Performance, School of Sport and Education, Brunel University, Uxbridge, Middlesex, United Kingdom","Linthorne N.P., Centre for Sports Medicine and Human Performance, School of Sport and Education, Brunel University, Uxbridge, Middlesex, United Kingdom; Patel D.S., Centre for Sports Medicine and Human Performance, School of Sport and Education, Brunel University, Uxbridge, Middlesex, United Kingdom","To produce the greatest horizontal distance in a punt kick the ball must be projected at an appropriate angle. Here, we investigated the optimum projection angle that maximises the distance attained in a punt kick by a soccer goalkeeper. Two male players performed many maximum-effort kicks using projection angles of between 10° and 90°. The kicks were recorded by a video camera at 100 Hz and a 2-D biomechanical analysis was conducted to obtain measures of the projection velocity, projection angle, projection height, ball spin rate, and foot velocity at impact. The player's optimum projection angle was calculated by substituting mathematical equations for the relationships between the projection variables into the equations for the aerodynamic flight of a soccer ball. The calculated optimum projection angles were in agreement with the player's preferred projection angles (40° and 44°). In projectile sports even a small dependence of projection velocity on projection angle is sufficient to produce a substantial shift in the optimum projection angle away from 45°. In the punt kicks studied here, the optimum projection angle was close to 45° because the projection velocity of the ball remained almost constant across all projection angles. This result is in contrast to throwing and jumping for maximum distance, where the projection velocity the athlete is able to achieve decreases substantially with increasing projection angle and so the optimum projection angle is well below 45°. © Journal of Sports Science and Medicine.","Sports biomechanics; Sports projectile","","Asai T., Seo K., Kobayashi O., Sakashita R., Fundamental aerodynamics of the soccer ball, Sports Engineering, 10, pp. 101-110, (2007); Ball K., Biomechanical considerations of distance kicking in Australian Rules football, Sports Biomechanics, 7, pp. 10-23, (2008); Bartlett R., Muller E., Lindinger S., Brunner F., Morriss C., Three-dimensional evaluation of the kinetic release parameters for javelin throwers of different skill levels, Journal of Applied Biomechanics, 12, pp. 58-71, (1996); Bray K., Kerwin D.G., Modelling the long soccer throw-in using aerodynamic lift and drag, The Engineering of Sport 5 (Vol. 1), pp. 56-62, (2004); Cabri J., de Proft E., Dufour W., Clarys J.P., The relation between muscular strength and kicking performance, Science and Football, pp. 186-193, (1988); Carre M.J., Asai T., Akatsuka T., Haake S.J., The curve kick of a football II: Flight through the air, Sports Engineering, 5, pp. 193-200, (2002); de Mestre N., The Mathematics of Projectiles In Sport, (1990); Efron B., Tibshirani R.J., An Introduction to The Bootstrap. CRC Press, (1993); Gomez piriz P.T., Gutierrez davilla M., Cabello Manrique D., Lees A., Biomechanics of the volley kick by the soccer goalkeeper, International Research In Science and Soccer, pp. 47-53, (2010); Hay J.G., The Biomechanics of Sports Techniques, (1993); Holmes C., Jones R., Harland A., Petzing J., Ball launch characteristics for elite rugby union players, In: The Engineering of Sport 6, 1, pp. 211-216, (2006); Hubbard M., The Flight of Sports Projectiles, pp. 381-400, (2000); Hubbard M., de Mestre N.J., Scott J., Dependence of release variables in the shot put, Journal of Biomechanics, 34, pp. 449-456, (2001); Knudson D., Bahamonde R., Effect of endpoint conditions on position and velocity near impact in tennis, Journal of Sports Sciences, 19, pp. 839-844, (2001); Kreighbaum E., Barthels M., Biomechanics: A Qualitative Approach For Studying Human Movement, (1996); Lees A., Nolan L., Biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (1998); Leigh S., Liu H., Hubbard M., Yu B., Individualized optimal release angles in discus throwing, Journal of Biomechanics, 43, pp. 540-545, (2010); Linthorne N.P., Optimum projection angle in the shot put, Journal of Sports Sciences, 19, pp. 359-372, (2001); Linthorne N.P., Everett D.J., Release angle for achieving maximum distance in the soccer throw-in, Sports Biomechanics, 5, pp. 243-260, (2006); Linthorne N.P., Guzman M.S., Bridgett L.A., Optimum projection angle in the long jump, Journal of Sports Sciences, 23, pp. 703-712, (2005); Maheras A.V., The Relationship Between the Angle of Release and the Velocity of Release In the Shot-put, and the Application of a Theoretical Model to Estimate The Optimum Angle of Release, (1995); Manolopoulos E., Papadopoulos C., Kellis E., Effects of combined strength and kick coordination training on soccer kick biomechanics in amateur players, Scandinavian Journal of Medicine and Science In Sports, 16, pp. 102-110, (2006); Motulsky H., Christopoulos A., Fitting Models to Biological Data Using Linear and Nonlinear Regression, (2004); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 24, pp. 529-541, (2006); Press W.H., Flannery B.P., Teukolsky S.A., Vetterling W.T., Numerical Recipes In C: The Art of Scientific Computing, (1988); Red W.E., Zogaib A.J., Javelin dynamics including body interaction, Journal of Applied Mechanics, 44, pp. 496-498, (1977); Salter C.W., Sinclair P.J., Portus M.R., The associations between fast bowling technique and ball release speed: A pilot study of the within-bowler and between-bowler approaches, Journal of Sports Sciences, 25, pp. 1279-1285, (2007); Tsaousidis N., Zatsiorsky V., Two types of ball-effector interaction and their relative contribution to soccer kicking, Human Movement Science, 15, pp. 861-876, (1996); Smith H., A Cinematographic Analysis of Football Punting, (1949); Viitasalo J., Mononen H., Norvapalo K., Release parameters at the foul line and the official result in javelin throwing, Sports Biomechanics, 2, pp. 15-34, (2003); Wakai M., Linthorne N.P., Optimum takeoff angle in the standing long jump, Human Movement Science, 24, pp. 81-96, (2005); Wesson J., The Science of Soccer, (2002); Winter D.A., Biomechanics and Motor Control of Human Movement, (2009)","N. P. Linthorne; Centre for Sports Medicine and Human Performance, School of Sport and Education, Brunel University, Uxbridge, Middlesex, United Kingdom; email: nick.linthorne@brunel.ac.uk","","","13032968","","","","English","J. Sports Sci. Med.","Article","Final","","Scopus","2-s2.0-79952463920" "Montini M.; Felici F.; Nicolò A.; Sacchetti M.; Bazzucchi I.","Montini, Marco (47161346200); Felici, Francesco (17633945000); Nicolò, Andrea (55882246900); Sacchetti, Massimo (7006210638); Bazzucchi, Ilenia (6506000347)","47161346200; 17633945000; 55882246900; 7006210638; 6506000347","Neuromuscular demand in a soccer match assessed by a continuous electromyographic recording","2017","Journal of Sports Medicine and Physical Fitness","57","4","","345","352","7","9","10.23736/S0022-4707.16.06130-2","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85015107204&doi=10.23736%2fS0022-4707.16.06130-2&partnerID=40&md5=5d43b40c1c6ad4f455b2674b6fa6aaf6","Department of Movement, Human and Health Sciences, Università degli Studi di Roma Foro Italico, Piazza Lauro De Bosis 6, Rome, 00135, Italy","Montini M., Department of Movement, Human and Health Sciences, Università degli Studi di Roma Foro Italico, Piazza Lauro De Bosis 6, Rome, 00135, Italy; Felici F., Department of Movement, Human and Health Sciences, Università degli Studi di Roma Foro Italico, Piazza Lauro De Bosis 6, Rome, 00135, Italy; Nicolò A., Department of Movement, Human and Health Sciences, Università degli Studi di Roma Foro Italico, Piazza Lauro De Bosis 6, Rome, 00135, Italy; Sacchetti M., Department of Movement, Human and Health Sciences, Università degli Studi di Roma Foro Italico, Piazza Lauro De Bosis 6, Rome, 00135, Italy; Bazzucchi I., Department of Movement, Human and Health Sciences, Università degli Studi di Roma Foro Italico, Piazza Lauro De Bosis 6, Rome, 00135, Italy","BACKGROUND: The bulk of research investigating soccer player's performance has been concentrated on the metabolic demand, while only few studies focused on the neuromuscular activation. The present study aimed at investigating the activation profile of the leg muscles throughout a 90-minute soccer match. METHODS: Fifteen football players (18.3±0.7 years) performed: 1) an isometric maximal voluntary contraction (MVC) before the game [MVCpre]; 2) a 90-minute soccer match (composed of two 45-minute periods separated by a 15-minute rest); 3) a second MVC after the match [MVCpost]. Electromyographic (EMG) activity of the Vastus Lateralis (VL) muscle of the dominant leg was recorded during the match. The root mean square (RMS) of the EMG signals was normalized for the maximal RMS obtained during the MVCpre (100%RMSmax) and six intensity classes were created in order to represent the %RMS distribution during the match (1st: 0-20%RMSmax; 2nd: 20-40%RMSmax; 3rd: 40-60%RMSmax; 4th: 60-80%RMSmax; 5th: 80-100%RMSmax; 6th: 100-120%RMSmax). RESULTS: After the 90-minute soccer match, knee extensor MVC failed to show any statistical difference from pre-game values (-4.2%; P>0.05) whilst the neuromuscular activation demonstrated a significant reduction (-26.3%, P<0.01). During the game, the mean total distribution of RMS of the players was: 84.8±7.1% of total time in the 1st class, 8.5±3.9% in the 2nd, 3.6±1.6% in the 3rd, 1.7±1.0% in the 4th, 0.9±0.6% in the 5th and 0.4±0.5% in the 6th class of intensity. There was a significant difference (P<0.05) between the first versus the second half for the classes 1st, 3rd and 4th. CONCLUSIONS: This represents the first attempt to characterize the neuromuscular activation profile during a 90-minute soccer match. Integrating this approach with more traditional ones may help further our understanding of the physiological demand of competitive soccer. © 2016 EDIZIONI MINERVA MEDICA.","Athletic performance; Electromyography; Soccer","Adolescent; Analysis of Variance; Biomechanical Phenomena; Electromyography; Humans; Isometric Contraction; Male; Muscle Fatigue; Quadriceps Muscle; Soccer; Young Adult; athletic performance; electromyography; football; human; knee; muscle contractility; rest; soccer; vastus lateralis muscle; adolescent; analysis of variance; biomechanics; electromyography; male; muscle fatigue; muscle isometric contraction; physiology; quadriceps femoris muscle; soccer; young adult","Rampinini E., Bosio A., Ferraresi I., Petraoio A., Morelli A., Sassi A., Match-related fatigue in soccer players, Med Sci Sports Exerc, 43, pp. 2161-2170, (2011); Williams A.M., Perceptual skill in soccer: Implications for talent identification and development, J Sports Sci, 18, pp. 737-750, (2000); Bangsbo J., Energy demands in competitive soccer, J Sports Sci, 12, pp. S5-S12, (1994); Bangsbo J., Norregaard L., Thorso F., Activity profile of competition soccer, Can J Sport Sci, 16, pp. 110-116, (1991); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, J Sports Sci, 21, pp. 519-528, (2003); Krustrup P., Mohr M., Ellingsgaard H., Bangsbo J., Physical demands during an elite female soccer game: Importance of training status, Med Sci Sports Exerc, 37, pp. 1242-1248, (2005); Krustrap P., Mohr M., Steensberg A., Bencke J., Klaer M., Bangsbo J., Muscle and blood metabolites during a soccer game: Implications for sprint performance, Med Sci Sports Exerc, 38, pp. 1165-1174, (2006); Bloomfield J., Reliability of the bloomfield movement classification, Int J Perform Anal Sport, 1, pp. 20-27, (2007); Bangsbo J., The physiology of soccer-with special reference to intense intermittent exercise, Acta Physiol Scand Suppl, 619, pp. 1-155, (1994); Drust B., Atkinson G., Reilly T., Future perspectives in the evaluation of the physiological demands of soccer, Sport Med, 37, pp. 783-805, (2007); Robineau J., Jouaux T., Lacroix M., Babault N., Neuromuscular Fatigue Induced by a 90-Minute Soccer Game Modeling, J Strength Cond Res, 26, pp. 555-562, (2012); Scurr J.C., Abbott V., Ball N., Quadriceps EMG muscle activation during accurate soccer instep kicking, J Sports Sci, 29, pp. 247-251, (2011); Dorge H.C., Andersen T.B., Seirensen H., Simonsen E.B., Aagaard H., Dyhre-Poulsen P., Et al., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scand J Med Sci Sports, 9, pp. 195-200, (1999); Thorlund J.B., Aagaard P., Madsen K., Rapid muscle force capacity changes after soccer match play, Int J Sports Med, 30, pp. 273-278, (2009); Marshall P.W.M., Lovell R., Jeppesen G.K., Andersen K., Siegler J.C., Hamstring muscle fatigue and central motor output during a simulated soccer match, PLoS One, 9, (2014); Bazzucchi I., Felici F., Macaluso A., De Vito G., Differences between young and older women in maximal force, force fluctuations, and surface EMG during isometric knee extension and elbow flexion, Muscle Nerve, 30, pp. 626-635, (2004); Harwood B., Edwards D.L., Jakobi J.M., Age- and sex-related differences in muscle activation for a discrete functional task, Eur J Appl Physiol, 103, pp. 677-686, (2008); Di Salvo V., Baron R., Tschan H., Calderon Montero F.J., Bachl N., Pigozzi F., Performance characteristics according to playing position in elite soccer, Int J Sports Med, 28, pp. 222-227, (2007); Gaudino P., Alberti G., Iaia F.M., Estimated metabolic and mechanical demands during different small-sided games in elite soccer players, Hum Mov Sci, 36, pp. 123-133, (2014); Osgnach C., Poser S., Bernardini R., Rinaldo R., Di Prampero P.E., Energy cost and metabolic power in elite soccer: A new match analysis approach, Med Sci Sports Exerc, 42, pp. 170-178, (2010); Impellizzeri F.M., Marcora S.M., Castagna C., Reilly T., Sassi A., Iaia F.M., Et al., Physiological and performance effects of generic versus specific aerobic training in soccer players, Int J Sports Med, 27, pp. 483-492, (2006); DeVries H.A., Efficiency of electrical activity"" as a physiological measure of the functional state of muscle tissue, Am J Phys Med, 47, pp. 10-22, (1968); Eloranta V., Patterning of muscle activity in static knee extension, Electromyogr Clin Neurophysiol., 29, pp. 369-375, (1989); Salzman A., Torburn L., Perry J., Contribution of rectus femoris and vasti to knee extension. An electromyographic study, Clin Orthop Relat Res, 290, pp. 236-243, (1993); Hodges P.W., Mellor R., Crossley K., Bennell K., Pain induced by injection of hypertonic saline into the infrapatellar fat pad and effect on coordination of the quadriceps muscles, Arthritis Care Res, 61, pp. 70-77, (2009); Hader K., Mendez-Villanueva A., Ahmaidi S., Williams B.K., Buchheit M., Changes of direction during high-intensity intermittent runs: Neuromuscular and metabolic responses, BMC Sports Sci Med Rehabil, 6, (2014)","I. Bazzucchi; Department of Movement, Human and Health Sciences, Università degli Studi di Roma Foro Italico, Rome, Piazza Lauro De Bosis 6, 00135, Italy; email: ilenia.bazzucchi@uniroma4.it","","Edizioni Minerva Medica","00224707","","JMPFA","27015101","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-85015107204" "Harato K.; Morishige Y.; Kobayashi S.; Niki Y.; Nagura T.","Harato, Kengo (23670218400); Morishige, Yutaro (56539739000); Kobayashi, Shu (7405377513); Niki, Yasuo (7102048788); Nagura, Takeo (8650289700)","23670218400; 56539739000; 7405377513; 7102048788; 8650289700","Biomechanical features of drop vertical jump are different among various sporting activities","2022","BMC Musculoskeletal Disorders","23","1","331","","","","8","10.1186/s12891-022-05290-0","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127896321&doi=10.1186%2fs12891-022-05290-0&partnerID=40&md5=15b46a0a39f675a45b8e62f69efa921f","Department of Orthopedic Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan; Department of Clinical Biomechanics, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan","Harato K., Department of Orthopedic Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan, Department of Clinical Biomechanics, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan; Morishige Y., Department of Orthopedic Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan, Department of Clinical Biomechanics, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan; Kobayashi S., Department of Orthopedic Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan; Niki Y., Department of Orthopedic Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan; Nagura T., Department of Orthopedic Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan, Department of Clinical Biomechanics, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan","Background: Risk for non-contact anterior cruciate ligament (ACL) injury can be assessed based on drop vertical jump (DVJ). However, biomechanics of DVJ may differ with various sporting activities. The purpose of the present study was to clarify whether biomechanical features of DVJ are different among various sporting activities in female athletes. Methods: A total of 42 female athletes, including 25 basketball, 8 soccer and 9 volleyball players, participated in the current investigation. DVJ was done for each female athlete using a three-dimensional motion analysis system which consisted of six cameras, two force plates and 46 retro-reflective markers. Kinematic and kinetic data were recorded for both limbs in each athlete. Simultaneously, frontal and sagittal plane views of the DVJ were recorded using two different high-resolution video cameras to evaluate Landing Error Scoring System (LESS) score. Three-dimensional biomechanical parameters at the knee joint and LESS were compared among three different sporting activities using ANOVA or Kruskal–Wallis test after confirming normality assumption. Thereafter post hoc Tukey or Steel–Dwass was utilized for multiple comparison. Results: Soccer players had better LESS score, and peak knee flexion angle was significantly larger in soccer players compared to the other sports. In addition, knee abduction angle at initial contact (IC), peak knee abduction angle, knee internal rotation angle, and knee abduction moment within 40 ms from IC were significantly smaller in soccer players, compared to basketball players. In terms of volleyball players, knee abduction angle at IC and knee internal rotation angle at IC were significantly larger than soccer players, whereas no significant biomechanical differences were found between basketball and volleyball players. Conclusions: From the present study, female basketball and volleyball players have worse LESS score, smaller peak knee flexion angle, greater knee abduction angle at IC and greater knee internal rotation angle at IC, compared to female soccer players. Thus, female basketball and volleyball players may have an increased risk of non-contact ACL injury during the jump-landing task, compared to soccer players. Biomechanics of DVJ depends on characteristics of the athlete's primary sport. © 2022, The Author(s).","Anterior cruciate ligament; Biomechanics; Drop vertical jump; Female athletes; Sport-specific movement","Anterior Cruciate Ligament Injuries; Athletes; Basketball; Biomechanical Phenomena; Female; Humans; Knee; Knee Joint; Soccer; adult; anterior cruciate ligament injury; Article; athlete; basketball player; biomechanics; drop vertical jump; female; ground reaction force; human; human experiment; jumping; kinematics; knee abduction angle; knee abduction moment; knee angle; knee flexion angle; knee internal rotation angle; Kruskal Wallis test; landing error scoring system; physical parameters; post hoc analysis; range of motion; scoring system; soccer player; volleyball; athlete; basketball; biomechanics; injury; knee; soccer","Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., van den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Bates N.A., Ford K.R., Myer G.D., Hewett T.E., Timing differences in the generation of ground reaction forces between the initial and secondary landing phases of the drop vertical jump, Clin Biomech (Bristol, Avon), 28, 7, pp. 796-799, (2013); Braun H.J., Shultz R., Malone M., Leatherwood W.E., Silder A., Dragoo J.L., Differences in ACL biomechanical risk factors between field hockey and lacrosse female athletes, Knee Surg Sports Traumatol Arthrosc, 23, 4, pp. 1065-1070, (2015); Cesar G.M., Tomasevicz C.L., Burnfield J.M., Frontal plane comparison between drop jump and vertical jump: implications for the assessment of ACL risk of injury, Sports Biomech, 15, 4, pp. 440-449, (2016); Dingenen B., Malfait B., Nijs S., Peers K.H., Vereecken S., Verschueren S.M., Staes F.F., Can two-dimensional video analysis during single-leg drop vertical jumps help identify non-contact knee injury risk? A one-year prospective study, Clin Biomech (Bristol, Avon), 30, 8, pp. 781-787, (2015); Dingenen B., Malfait B., Vanrenterghem J., Robinson M.A., Verschueren S.M., Staes F.F., Can two-dimensional measured peak sagittal plane excursions during drop vertical jumps help identify three-dimensional measured joint moments?, Knee, 22, 2, pp. 73-79, (2015); Hewett T.E., Myer G.D., Kiefer A.W., Ford K.R., Longitudinal Increases in Knee Abduction Moments in Females during Adolescent Growth, Med Sci Sports Exerc, 47, 12, pp. 2579-2585, (2015); Husted R.S., Bencke J., Andersen L.L., Myklebust G., Kallemose T., Lauridsen H.B., Holmich P., Aagaard P., Zebis M.K., A comparison of hamstring muscle activity during different screening tests for non-contact ACL injury, Knee, 23, 3, pp. 362-366, (2016); Malfait B., Sankey S., Firhad Raja Azidin R.M., Deschamps K., Vanrenterghem J., Robinson M.A., Staes F., Verschueren S., How reliable are lower-limb kinematics and kinetics during a drop vertical jump?, Med Sci Sports Exerc, 46, 4, pp. 678-685, (2014); Mueske N.M., Patel A.R., Pace J.L., Zaslow T.L., VandenBerg C.D., Katzel M.J., Edison B.R., Wren T.A.L., Improvements in landing biomechanics following anterior cruciate ligament reconstruction in adolescent athletes, Sports Biomech, 19, 6, pp. 738-749, (2020); Munro A., Herrington L., The effect of videotape augmented feedback on drop jump landing strategy: Implications for anterior cruciate ligament and patellofemoral joint injury prevention, Knee, 21, 5, pp. 891-895, (2014); Nichols J.K., O'Reilly O.M., Verifying the equivalence of representations of the knee joint moment vector from a drop vertical jump task, Knee, 24, 2, pp. 484-490, (2017); Nyman E., Armstrong C.W., Real-time feedback during drop landing training improves subsequent frontal and sagittal plane knee kinematics, Clin Biomech (Bristol, Avon), 30, 9, pp. 988-994, (2015); Padua D.A., DiStefano L.J., Beutler A.I., de la Motte S.J., DiStefano M.J., Marshall S.W., The Landing Error Scoring System as a Screening Tool for an Anterior Cruciate Ligament Injury-Prevention Program in Elite-Youth Soccer Athletes, J Athl Train, 50, 6, pp. 589-595, (2015); Padua D.A., Marshall S.W., Boling M.C., Thigpen C.A., Garrett W.E., Beutler A.I., The Landing Error Scoring System (LESS) Is a valid and reliable clinical assessment tool of jump-landing biomechanics: The JUMP-ACL study, Am J Sports Med, 37, 10, pp. 1996-2002, (2009); Satkunskiene D., Kamandulis S., Brazaitis M., Snieckus A., Skurvydas A., Effect of high volume stretch-shortening cycle exercise on vertical leg stiffness and jump performance, Sports Biomech, 20, 1, pp. 38-54, (2021); Taylor J.B., Nguyen A.D., Shultz S.J., Ford K.R., Hip biomechanics differ in responders and non-responders to an ACL injury prevention program, Knee Surg Sports Traumatol Arthrosc, 28, 4, pp. 1236-1245, (2020); Krosshaug T., Steffen K., Kristianslund E., Nilstad A., Mok K.M., Myklebust G., Andersen T.E., Holme I., Engebretsen L., Bahr R., The Vertical Drop Jump Is a Poor Screening Test for ACL Injuries in Female Elite Soccer and Handball Players: A Prospective Cohort Study of 710 Athletes, Am J Sports Med, 44, 4, pp. 874-883, (2016); Hewett T.E., Di Stasi S.L., Myer G.D., Current concepts for injury prevention in athletes after anterior cruciate ligament reconstruction, Am J Sports Med, 41, 1, pp. 216-224, (2013); Hewett T.E., Ford K.R., Hoogenboom B.J., Myer G.D., Understanding and preventing acl injuries: current biomechanical and epidemiologic considerations - update 2010, N Am J Sports Phys Ther, 5, 4, pp. 234-251, (2010); Harato K., Morishige Y., Niki Y., Kobayashi S., Nagura T., Fatigue and recovery have different effects on knee biomechanics of drop vertical jump between female collegiate and recreational athletes, J Orthop Surg Res, 16, 1, (2021); Nishizawa K., Hashimoto T., Hakukawa S., Nagura T., Otani T., Harato K., Effects of foot progression angle on kinematics and kinetics of a cutting movement, J Exp Orthop, 9, 1, (2022); Morishige Y., Harato K., Kobayashi S., Niki Y., Matsumoto M., Nakamura M., Nagura T., Difference in leg asymmetry between female collegiate athletes and recreational athletes during drop vertical jump, J Orthop Surg Res, 14, 1, (2019)","K. Harato; Department of Orthopedic Surgery, Keio University School of Medicine, Tokyo, 35 Shinanomachi, Shinjuku-ku, 160-8582, Japan; email: harato@keio.jp","","BioMed Central Ltd","14712474","","","35395841","English","BMC Musculoskelet. Disord.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85127896321" "Carrilho D.; Couceiro M.S.; Brito J.; Figueiredo P.; Lopes R.J.; Araújo D.","Carrilho, Daniel (57218905055); Couceiro, Micael Santos (35076901800); Brito, João (7101605635); Figueiredo, Pedro (23099660500); Lopes, Rui J. (57211016380); Araújo, Duarte (9334135800)","57218905055; 35076901800; 7101605635; 23099660500; 57211016380; 9334135800","Using optical tracking system data to measure team synergic behavior: Synchronization of player-ball-goal angles in a football match","2020","Sensors (Switzerland)","20","17","4990","1","14","13","10","10.3390/s20174990","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85090729586&doi=10.3390%2fs20174990&partnerID=40&md5=1a432683e968e2a22e519e2861597b9a","CIPER, Faculty of Human Kinetics, University of Lisbon, Cruz Quebrada, 1495-751, Portugal; Ingeniarius, Lda., Coimbra, 3025-307, Portugal; Portugal Football School, Portuguese Football Federation (FPF), Cruz Quebrada, 1495-751, Portugal; Research Centre in Sports Sciences, Health Sciences and Human Development, CIDESD, University Institute of Maia, ISMAI, Maia, 4475-690, Portugal; Department of Science and Information Technology, ISCTE, University Institute of Lisbon, Lisbon, 1649-026, Portugal; Telecommunications Institute, ISCTE, University Institute of Lisbon, Lisbon, 1049-001, Portugal","Carrilho D., CIPER, Faculty of Human Kinetics, University of Lisbon, Cruz Quebrada, 1495-751, Portugal; Couceiro M.S., CIPER, Faculty of Human Kinetics, University of Lisbon, Cruz Quebrada, 1495-751, Portugal, Ingeniarius, Lda., Coimbra, 3025-307, Portugal; Brito J., Portugal Football School, Portuguese Football Federation (FPF), Cruz Quebrada, 1495-751, Portugal; Figueiredo P., Portugal Football School, Portuguese Football Federation (FPF), Cruz Quebrada, 1495-751, Portugal, Research Centre in Sports Sciences, Health Sciences and Human Development, CIDESD, University Institute of Maia, ISMAI, Maia, 4475-690, Portugal; Lopes R.J., Department of Science and Information Technology, ISCTE, University Institute of Lisbon, Lisbon, 1649-026, Portugal, Telecommunications Institute, ISCTE, University Institute of Lisbon, Lisbon, 1049-001, Portugal; Araújo D., CIPER, Faculty of Human Kinetics, University of Lisbon, Cruz Quebrada, 1495-751, Portugal","The ecological dynamics approach to interpersonal relationships provides theoretical support to the use of kinematic data, obtained with sensor-based systems, in which players of a team are linked mainly by information from the performance environment. Our goal was to capture the properties of synergic behavior in football, using spatiotemporal data from one match of the 2018 FIFA WORLD CUP RUSSIA, to explore the application of player-ball-goal angles in cluster phase analysis. Linear mixed effects models were used to test the statistical significance of different effects, such as: team, half(-time), role and pitch zones. Results showed that the cluster phase values (synchronization) for the home team, had a 3.812 × 10−2 ± 0.536 × 10−2 increase with respect to the away team (X2 (41) = 259.8, p < 0.001) and that changing the role from with ball to without ball increased synchronization by 16.715 × 10−2 ± 0.283 × 10−2 (X2 (41) = 12227.0, p < 0.001). The interaction between effects was also significant. The player-team relative phase, the player-ball-goal angles relative frequency and the team configurations, showed that variations of synchronization might indicate critical performance changes (ball possession changes, goals scored, etc.). This study captured the ongoing player-environment link and the properties of team synergic behavior, supporting the use of sensor-based data computations in the development of relevant indicators for tactical analysis in sports. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.","Cluster phase analysis; Ecological dynamics; Football analytics; Group kinematics; Order parameter; Soccer; Spatiotemporal data; Synergies; Team behavior","Athletes; Athletic Performance; Biomechanical Phenomena; Group Processes; Humans; Soccer; Synchronization; Tracking (position); Ecological dynamics; Interpersonal relationship; Linear mixed-effects model; Optical tracking systems; Relative frequencies; Sensor based systems; Spatio-temporal data; Statistical significance; athlete; athletic performance; biomechanics; group process; human; soccer; Football","Linke D., Link D., Lames M., Football-specific validity of TRACAB’s optical video tracking systems, PLoS ONE, 15, (2020); Rodrigues A.C.N., Pereira A.S., Mendes R.M.S., Araujo A.G., Couceiro M.S., Figueiredo A.J., Using Artificial Intelligence for Pattern Recognition in a Sports Context, Sensors, 20, (2020); Hodder R.W., Ball K.A., Serpiello F.R., Criterion Validity of Catapult ClearSky T6 Local Positioning System for Measuring Inter-Unit Distance, Sensors, 20, (2020); Rein R., Memmert D., Big data and tactical analysis in elite soccer: Future challenges and opportunities for sports science, SpringerPlus, 5, (2016); Araujo D., Davids K., Team Synergies in Sport: Theory and Measures, Front. Psychol, 7, (2016); Silva P., Garganta J., Araujo D., Davids K., Aguiar P., Shared Knowledge or Shared Affordances? Insights from an Ecological Dynamics Approach to Team Coordination in Sports, Sports Med, 43, pp. 765-772, (2013); Woods C.T., McKeown I., Rothwell M., Araujo D., Robertson S., Davids K., Sport practitioners as sport ecology designers: How ecological dynamics has progressively changed perceptions of skill “acquisition” in the sporting habitat, Front. Psychol, 11, (2020); Button C., Wheat J., Lamb P., Why coordination dynamics is relevant for studying sport performance, Complex Systems in Sport, pp. 44-61, (2015); Hristovski R., Balague N., Schollhorn W.I., Basic notions in the science of complex systems and nonlinear dynamics, Complex Systems in Sport, pp. 3-17, (2015); Silva P., Vilar L., Davids K., Araujo D., Garganta J., Sports teams as complex adaptive systems: Manipulating player numbers shapes behaviours during football small-sided games, SpringerPlus, 5, (2016); Diniz A., Passos P., Modelling Interpersonal Coordination, Interpersonal Coordination and Performance in Social Systems, pp. 294-304, (2017); Riley M.A., Richardson M.J., Shockley K., Ramenzoni V.C., Interpersonal Synergies, Front. Psychol, 2, (2011); Bernstein N.A., The Co-Ordination and Regulation of Movements, (1967); Bruton M., O'Dwyer N., Synergies in coordination: A comprehensive overview of neural, computational, and behavioral approaches, J. 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Sport Sci, 14, pp. S487-S492, (2014); Fonseca S., Milho J., Travassos B., Araujo D., Spatial dynamics of team sports exposed by Voronoi diagrams, Hum. Mov. Sci, 31, pp. 1652-1659, (2012); Rein R., Raabe D., Perl J., Memmert D., Evaluation of changes in space control due to passing behavior in elite soccer using Voronoi-cells, Advances in Intelligent Systems and Computing, Proceedings of the 10th International Symposium on Computer Science in Sports (ISCSS), Loughborough, UK, 9–11 September 2015; Lopez-Felip M.A., Davis T.J., Frank T.D., Dixon J.A., A cluster phase analysis for collective behavior in team sports, Hum. Mov. Sci, 59, pp. 96-111, (2018); Clemente F.M., Castillo D., Los Arcos A., Tactical analysis according to age-level groups during a 4 vs. 4 plus goalkeepers small-sided game, Int. J. Environ. Res. Public Health, 17, (2020); Silva P., Chung D., Carvalho T., Cardoso T., Davids K., Araujo D., Garganta J., Practice effects on intra-team synergies in football teams, Hum. Mov. Sci, 46, pp. 39-51, (2016); Duarte R., Araujo D., Correia V., Davids K., Sports teams as superorganisms: Implications of sociobiological models of behaviour for research and practice in team sports performance analysis, Sports Med, 42, pp. 633-642, (2012); Sumpter D.J.T., Mann R.P., Perna A., The modelling cycle for collective animal behaviour, Interface Focus, 2, pp. 764-773, (2012); Couzin I.D., Collective cognition in animal groups, Trends Cogn. 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Sport, 14, pp. 170-176, (2011); Ramos J., Lopes R.J., Marques P., Araujo D., Hypernetworks Reveal Compound Variables That Capture Cooperative and Competitive Interactions in a Soccer Match, Front. Psychol, 8, (2017); Ribeiro J., Davids K., Araujo D., Silva P., Ramos J., Lopes R., Garganta J., The Role of Hypernetworks as a Multilevel Methodology for Modelling and Understanding Dynamics of Team Sports Performance, Sports Med, 49, pp. 1337-1344, (2019); Shaw L., Glickman M., Dynamic analysis of team strategy in professional football, Proceedings of the Barça Sports Analytics Summit, (2019); Travassos B., Araujo D., Duarte R., McGarry T., Spatiotemporal coordination behaviors in futsal (indoor football) are guided by informational game constraints, Hum. Mov. Sci, 31, pp. 932-945, (2012); Frank T.D., Richardson M.J., On a test statistic for the Kuramoto order parameter of synchronization: An illustration for group synchronization during rocking chairs, Phys. Nonlinear Phenom, 239, pp. 2084-2092, (2010); Acebron J.A., Bonilla L.L., Vicente C.J.P., Ritort F., Spigler R., The Kuramoto model: A simple paradigm for synchronization phenomena, Rev. Mod. Phys, 77, pp. 137-185, (2005)","D. Carrilho; CIPER, Faculty of Human Kinetics, University of Lisbon, Cruz Quebrada, 1495-751, Portugal; email: carrilho.daniel@campus.ul.pt","","MDPI AG","14248220","","","32899219","English","Sensors","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85090729586" "Cordeiro N.; Cortes N.; Fernandes O.; Diniz A.; Pezarat-Correia P.","Cordeiro, Nuno (55670528700); Cortes, Nelson (23033673100); Fernandes, Orlando (25521514400); Diniz, Ana (35995152200); Pezarat-Correia, Pedro (6508015737)","55670528700; 23033673100; 25521514400; 35995152200; 6508015737","Dynamic knee stability and ballistic knee movement after ACL reconstruction: an application on instep soccer kick","2015","Knee Surgery, Sports Traumatology, Arthroscopy","23","4","","1100","1106","6","9","10.1007/s00167-014-2894-8","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893468430&doi=10.1007%2fs00167-014-2894-8&partnerID=40&md5=5a9276f3a02e5ddb9217c906d210baae","Interdisciplinary Centre for the Study of Human Performance, University of Lisbon, Lisbon, Portugal; Sports Medicine Assessment, Research & Testing (SMART) Laboratory, George Mason University, Manassas, VA, United States; Sport Sciences Department, Technology and Science School, Evora University, Évora, Portugal","Cordeiro N., Interdisciplinary Centre for the Study of Human Performance, University of Lisbon, Lisbon, Portugal; Cortes N., Sports Medicine Assessment, Research & Testing (SMART) Laboratory, George Mason University, Manassas, VA, United States; Fernandes O., Sport Sciences Department, Technology and Science School, Evora University, Évora, Portugal; Diniz A., Interdisciplinary Centre for the Study of Human Performance, University of Lisbon, Lisbon, Portugal; Pezarat-Correia P., Interdisciplinary Centre for the Study of Human Performance, University of Lisbon, Lisbon, Portugal","Purpose: The instep soccer kick is a pre-programmed ballistic movement with a typical agonist–antagonist coordination pattern. The coordination pattern of the kick can provide insight into deficient neuromuscular control. The purpose of this study was to investigate knee kinematics and hamstrings/quadriceps coordination pattern during the knee ballistic extension phase of the instep kick in soccer players after anterior cruciate ligament reconstruction (ACL reconstruction). Methods: Seventeen players from the Portuguese Soccer League participated in this study. Eight ACL-reconstructed athletes (experimental group) and 9 healthy individuals (control group) performed three instep kicks. Knee kinematics (flexion and extension angles at football contact and maximum velocity instants) were calculated during the kicks. Rectus femoris (RF), vastus lateralis, vastus medialis, biceps femoralis, and semitendinosus muscle activations were quantified during the knee extension phase. Results: The ACL-reconstructed group had significantly lower knee extension angle (−1.2 ± 1.6, p < 0.021) and increased variability (1.1 ± 1.2, p < 0.012) when compared with the control group. Within the EMG variables, the RF had a significantly greater activity in the ACL-reconstructed group than in the control group (79.9 ± 27.7 % MVC vs. 49.2 ± 20.8 % MVC, respectively, p < 0.034). No other statistically significant differences were found. Conclusions: The findings of this study demonstrate that changes in ACL-reconstructed individuals were observed on knee extension angle and RF muscle activation while performing an instep kick. These findings are in accordance with the knee stability recovery process after ACL reconstruction. No differences were observed in the ballistic control movement pattern between normal and ACL-reconstructed subjects. Performing open kinetic chain exercises using ballistic movements can be beneficial when recovering from ACL reconstruction. The exercises should focus on achieving multi-joint coordination and full knee extension (range of motion). Level of evidence: III. © 2014, Springer-Verlag Berlin Heidelberg.","Movement pattern; Neuromuscular control; Open kinetic chain and coordination","Adult; Anterior Cruciate Ligament Reconstruction; Athletes; Biomechanical Phenomena; Humans; Knee Injuries; Knee Joint; Male; Muscle, Skeletal; Range of Motion, Articular; Recovery of Function; Soccer; Young Adult; adult; anterior cruciate ligament reconstruction; athlete; biomechanics; convalescence; human; injuries; joint characteristics and functions; knee; Knee Injuries; male; pathophysiology; physiology; skeletal muscle; soccer; young adult","Amiri-Khorasani M., Abu Osman N.A., Yusof A., Biomechanical responses of thigh and lower leg during 10 consecutive soccer instep kicks, J Strength Cond Res, 25, 4, pp. 1177-1181, (2011); Arms S.W., Pope M.H., Johnson R.J., Fischer R.A., Arvidsson I., Eriksson E., The biomechanics of anterior cruciate ligament rehabilitation and reconstruction, Am J Sport Med, 12, 1, pp. 8-18, (1984); Aruin A.S., Simple lower extremity two-joint synergy, Percept Mot Skills, 92, 2, pp. 563-568, (2001); Aune A.K., Ekeland A., Nordsletten L., Effect of quadriceps or hamstring contraction on the anterior shear force to anterior cruciate ligament failure. 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Biomechanics of the simultaneous isometric contraction method of the quadriceps and the hamstrings, Clin Orthop Relat Res, 220, pp. 266-274, (1987); Zouita Ben Moussa A., Zouita S., Dziri C., Ben Salah F.Z., Single-leg assessment of postural stability and knee functional outcome two years after anterior cruciate ligament reconstruction, Ann Phys Rehabil Med, 52, 6, pp. 475-484, (2009)","","","Springer Verlag","09422056","","","24519621","English","Knee Surg. Sports Traumatol. Arthroscopy","Article","Final","","Scopus","2-s2.0-84893468430" "Lam M.R.; Dong P.; Shokrollahi Y.; Gu L.; Suh D.W.","Lam, Matthew R. (58029153700); Dong, Pengfei (57197794685); Shokrollahi, Yasin (57736431600); Gu, Linxia (8347437400); Suh, Donny W. (7202639594)","58029153700; 57197794685; 57736431600; 8347437400; 7202639594","Finite Element Analysis of Soccer Ball-Related Ocular and Retinal Trauma and Comparison with Abusive Head Trauma","2022","Ophthalmology Science","2","2","100129","","","","7","10.1016/j.xops.2022.100129","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85132984724&doi=10.1016%2fj.xops.2022.100129&partnerID=40&md5=952f9379adc284ee0483d31fd2df8623","Creighton University School of Medicine, Omaha, NE, United States; Florida Institute of Technology, Department of Biomedical and Chemical Engineering & Department of Mechanical Engineering, Florida, Melbourne; Gavin Herbert Eye Institute, University of California at Irvine, Department of Ophthalmology and Visual Sciences, Irvine, California, United States","Lam M.R., Creighton University School of Medicine, Omaha, NE, United States; Dong P., Florida Institute of Technology, Department of Biomedical and Chemical Engineering & Department of Mechanical Engineering, Florida, Melbourne; Shokrollahi Y., Florida Institute of Technology, Department of Biomedical and Chemical Engineering & Department of Mechanical Engineering, Florida, Melbourne; Gu L., Florida Institute of Technology, Department of Biomedical and Chemical Engineering & Department of Mechanical Engineering, Florida, Melbourne; Suh D.W., Gavin Herbert Eye Institute, University of California at Irvine, Department of Ophthalmology and Visual Sciences, Irvine, California, United States","Purpose: Trauma to the eye resulting from a soccer ball is a common sports-related injury. Although the types of ocular pathologic features that result from impact have been documented, the underlying pathophysiologic mechanics are not as well studied. The purpose of this study was to evaluate the biomechanical events after the collision of a soccer ball with the eye to better understand the pathophysiology of observed ocular and retinal injuries and to compare them with those observed in abusive head trauma (AHT). Design: Computer simulation study. Participants: None. Methods: A finite element model of the eye was used to investigate the effects of a collision of a soccer ball on the eye. Main Outcome Measures: Intraocular pressure and stress. Results: Impact of the soccer ball with the eye generated a pressure wave that traveled through the vitreous, creating transient pockets of high and negative pressure. During the high-frequency phase, pressure in the vitreous near the posterior pole ranged from 39.6 to –30.9 kPa. Stress in ocular tissue was greatest near the point of contact, with a peak of 66.6 kPa. The retina experienced the greatest stress at the vasculature, especially at distal branches, where stress rose to 15.4 kPa. On average, retinal stress was greatest in the subretinal layer, but was highest in the preretinal layer when considering only vascular tissue. Conclusions: The high intraocular pressure and stress in ocular tissue near the point of soccer ball impact suggest that injuries to the anterior segment of the eye can be attributed to direct transmission of force from the ball. The subsequent propagation of a pressure wave may cause injuries to the posterior segment as the positive and negative pressures exert compressive and tractional forces on the retina. The linear movement of the pressure wave likely accounts for localization of retinal lesions to the posterior pole or superior temporal quadrant. The primarily linear force in soccer ball trauma is the probable cause for the more localized injury profile and lower retinal hemorrhage incidence compared with AHT, in which repetitive angular force is also at play. © 2022 American Academy of Ophthalmology","Abusive head trauma; Blunt trauma; Computer simulation; Retinal hemorrhage; Sports injury","anterior eye segment; Article; biomechanics; collision sport; computer simulation; disease association; disease course; eye injury; eye tissue; finite element analysis; force; head injury; human; human tissue; incidence; intraocular pressure; ocular blood vessel; outcome assessment; pathophysiology; retina hemorrhage; retina injury; soccer; vitreous body","Goldstein M.H., Wee D., Sports injuries: an ounce of prevention and a pound of cure, Eye Contact Lens, 37, 3, pp. 160-163, (2011); Napier S.M., Baker R.S., Sanford D.G., Easterbrook M., Eye injuries in athletics and recreation, Surv Ophthalmol, 41, 3, pp. 229-244, (1996); Haring R.S., Sheffield I.D., Canner J.K., Schneider E.B., Epidemiology of sports-related eye injuries in the United States, JAMA Ophthalmol, 134, 12, pp. 1382-1390, (2016); Miller K.N., Collins C.L., Chounthirath T., Smith G.A., Pediatric sports- and recreation-related eye injuries treated in US emergency departments, Pediatrics, 141, 2, (2018); Mishra A., Verma A.K., Sports related ocular injuries, Med J Armed Forces India, 68, 3, pp. 260-266, (2012); Arias E., Tejada-Vera B., Ahmad F., Provisional life expectancy estimates for January through June, 2020. 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Lam; Creighton University School of Medicine, Omaha, 2500 California Plaza, 68178, United States; email: matthewlam@creighton.edu","","Elsevier Inc.","26669145","","","","English","Ophthalmol. Sci.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85132984724" "Brull-Muria E.; Beltran-Garrido J.V.","Brull-Muria, Eric (57271447900); Beltran-Garrido, Jose Vicente (57194535366)","57271447900; 57194535366","Effects of a specific core stability program on the sprint and change-of-direction maneuverability performance in youth, male soccer players","2021","International Journal of Environmental Research and Public Health","18","19","116","","","","10","10.3390/ijerph181910116","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85115680870&doi=10.3390%2fijerph181910116&partnerID=40&md5=41b4f579766634aa350934408a7c3ec1","EUSES Escola Universitària de la Salut i l’Esport, Rovira i Virgili University, Tarragona, 43870, Spain; Department Education and Specific Didactics, Faculty of Humanities and Social Sciences, Universitat Jaume I, Castellón de la Plana, 12071, Spain","Brull-Muria E., EUSES Escola Universitària de la Salut i l’Esport, Rovira i Virgili University, Tarragona, 43870, Spain; Beltran-Garrido J.V., EUSES Escola Universitària de la Salut i l’Esport, Rovira i Virgili University, Tarragona, 43870, Spain, Department Education and Specific Didactics, Faculty of Humanities and Social Sciences, Universitat Jaume I, Castellón de la Plana, 12071, Spain","Although it is recommended to use sport-specific training programs to optimize perfor-mance, studies analyzing the effects of the core stability training with high levels of sport-specificity on athletic performance are insufficient and unclear. The objective of this study was to analyze the effects of the level of specificity of a CORE stability program on specific soccer actions. Fourteen youth players were randomly assigned to the specific core stability group (SCS; n = 7) or the general core stability group (GCS; n = 7). The eight-week intervention consisted of two weekly training sessions added to the usual soccer training. Both groups performed four CORE stability tasks. The SCS group followed the principle of sports specificity, while the GCS group performed CORE stability commons. Ten-meter linear sprinting (Sprint) and change-of-direction maneuverability (V-cut) were evaluated before and after the intervention programs. A statistically significant improvement was obtained in Sprint (d = 0.84 95% CI (0.22, 1.45), p = 0.008) and V-cut (d = 1.24 95% CI (0.52, 1.93), p < 0.001). At posttest, statistically nonsignificant differences were obtained between groups in Sprint (d = 1.03 95% CI (−0.25, 2.30), p = 0.082) and V-cut (d = −0.56 95% CI (−1.89, 0.78), p = 0.370). In conclusion, sprint and change-of-direction maneuverability were improved, but there was no superiority of any type of training. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.","Core stability; Soccer; Youth","Adolescent; Athletic Performance; Behavior Therapy; Humans; Male; Resistance Training; Soccer; biomechanics; male; performance assessment; physical activity; sport; training; young population; adolescent; article; clinical article; controlled study; human; juvenile; male; randomized controlled trial; soccer player; athletic performance; behavior therapy; resistance training; soccer","Akuthota V., Ferreiro A., Moore T., Fredericson M., Core stability exercise principles, Curr. Sports Med. 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Sports Exerc, 41, pp. 3-12, (2009); Sever O., Zorba E., Comparison of effect of static and dynamic core exercises on speed and agility performance in soccer players, Isokinet. Exerc. Sci, 26, pp. 29-36, (2018); Afyon Y.A., Effect of Core Training on 16 Year-Old Soccer Players, Educ. Res. Rev, 9, pp. 1275-1279, (2014); Myer G.D., Chu D.A., Brent J.L., Hewett T.E., Trunk and hip control neuromuscular training for the prevention of knee joint injury, Clin. Sports Med, 27, pp. 425-448, (2008); Soligard T., Myklebust G., Steffen K., Holme I., Silvers H., Bizzini M., Junge A., Dvorak J., Bahr R., Andersen T.E., Comprehensive warm-up programme to prevent injuries in young female footballers: Cluster randomised controlled trial, BMJ, 337, (2008); Imai A., Kaneoka K., Okubo Y., Shiraki H., Immediate effects of different trunk exercise programs on jump performance, Int. J. Sports Med, 37, pp. 197-201, (2016)","J.V. Beltran-Garrido; EUSES Escola Universitària de la Salut i l’Esport, Rovira i Virgili University, Tarragona, 43870, Spain; email: jose.vicente@euseste.es","","MDPI","16617827","","","34639418","English","Int. J. Environ. Res. Public Health","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85115680870" "Van Den Tillaar R.","Van Den Tillaar, Roland (6602938090)","6602938090","Comparison of step-by-step kinematics in repeated 30-m sprints in female soccer players","2018","Journal of Strength and Conditioning Research","32","7","","1923","1928","5","9","10.1519/JSC.0000000000002429","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85055601432&doi=10.1519%2fJSC.0000000000002429&partnerID=40&md5=481906b20f21e5a088fa7cceab416b35","Department of Sport Science and Physical Education, Nord University, Levanger, Norway","Van Den Tillaar R., Department of Sport Science and Physical Education, Nord University, Levanger, Norway","The aim of this study was to compare kinematics in repeated 30-m sprints in female soccer players. Seventeen subjects performed seven 30-m sprints every 30 seconds in one session. Kinematics was measured with an infrared contact mat and laser gun, and running times with an electronic timing device. The main findings were that sprint times increased in the repeated-sprint ability test. The main changes in kinematics during the repeated-sprint ability test were increased contact time and decreased step frequency, whereas no change in step length was observed. The step velocity increased in almost each step until the 14th, which occurred around 22 m. After this, the velocity was stable until the last step, when it decreased. This increase in step velocity was mainly caused by the increased step length and decreased contact times. It was concluded that the fatigue induced in repeated 30-m sprints in female soccer players resulted in decreased step frequency and increased contact time. Using this approach in combination with a laser gun and infrared mat for 30 m makes it very easy to analyze running kinematics in repeated sprints in training. This extra information gives the athlete, coach, and sports scientist the opportunity to give more detailed feedback and helps to target these changes in kinematics better to enhance repeated-sprint performance. © 2018 National Strength and Conditioning Association.","Contact time; Flight time; Step frequency; Step length","Adolescent; Athletes; Athletic Performance; Biomechanical Phenomena; Fatigue; Female; Humans; Running; Soccer; Young Adult; adolescent; athlete; athletic performance; biomechanics; comparative study; fatigue; female; human; pathophysiology; physiology; psychology; running; soccer; young adult","Bishop D., Girard O., Mendez-Villanueva A., Repeated-sprint ability - Part II, Sports Med, 41, pp. 741-756, (2011); Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in FA Premier League soccer, J Sports Sci Med, 6, pp. 63-70, (2007); Brocherie F., Millet G., Girard O., Neuro-mechanical and metabolic adjustments to the repeated anaerobic sprint test in professional football players, Eur J Appl Physiol, 115, pp. 891-903, (2015); Cohen J., Statistical Power Analysis for the Behavioral Sciences, pp. 174-178, (1988); Dawson B., Fitzsimons M., Green S., Goodman C., Carey M., Cole K., Changes in performance muscle metabolites enzymes and fibre types after short sprint training, Eur J Appl Physiol, 78, pp. 163-169, (1998); Ferraz R., Van Den Tillaar R., Marques M.C., The effect of fatigue on kicking velocity in soccer players, J Hum Kin, 35, pp. 97-107, (2012); Girard O., Brocherie F., Morin J.-B., Degache F., Millet G.P., Comparison of four sections for analyzing running mechanics alterations during repeated treadmill sprints, J Appl Biomech, 31, pp. 389-395, (2015); Girard O., Mendez-Villanueva A., Bishop D., Repeatedsprint ability - Part I: Factors contributing to fatigue, Sports Med, 41, pp. 673-694, (2011); Girard O., Micallef J.P., Millet G.P., Changes in spring-mass model characteristics during repeated running sprints, Eur J Appl Physiol, 111, pp. 125-134, (2011); Girard O., Racinais S., Kelly L., Millet G., Brocherie F., Repeated sprinting on natural grass impairs vertical stiffness but does not alter plantar loading in soccer players, Eur J Appl Physiol, 111, pp. 2547-2555, (2011); Glaister M., Howatson G., Pattison J.R., McInnes G., The reliability and validity of fatigue measures during multiple-sprint work: An issue revisited, J Strength Cond Res, 22, pp. 1597-1601, (2008); Mero A., Komi P.V., Gregor R.J., Biomechanics of sprint running: A review, Sports Med, 13, pp. 376-392, (1992); Millet G., Can Neuromuscular fatigue explain running strategies and performance in Ultra-marathons?, Sports Med, 41, pp. 489-506, (2011); Morin J.-B., Samozino P., Edouard P., Tomazin K., Effect of fatigue on force production and force application technique during repeated sprints, J Biomech, 44, pp. 2719-2723, (2011); Morin J., Dalleau G., Kyrolainen H., Jeannin T., Belli A., A simple method for measuring stiffness during running, J Appl Biomech, 21, pp. 167-180, (2005); Nagahara R., Morin J.B., Masaaki K., Impairment of sprint mechanical properties in an actual soccer match: A pilot study, Int J Sports Physiol Perf, 11, pp. 893-898, (2016); Spencer M., Bishop D., Dawson B., Goodman C., Physiological and metabolic responses of repeated-sprint Activities: Specific to field-based team sports, Sports Med, 35, pp. 1025-1044, (2005); Taskin H., Evaluation sprinting ability, density of acceleration, and speed dribbling ability of professional soccer players with respect to their positions, J Strength Cond Res, 22, pp. 1481-1486, (2008); Van Den Tillaar R., Gamble P., Comparison of step-by-step kinematics of resisted, normal and assisted 30 m sprints in experienced sprinters, Conference Proceedings of the 35th International Conference on Biomechanics in Sports, pp. 452-455, (2017); Van Den Tillaar R., Vatten T., Von Heimburg E., Effects of short or long warm-up on intermediate running performance, J Strength Cond Res, 31, pp. 37-44, (2017); Van Den Tillaar R., Von Heimburg E., Comparison of two types of warm-up upon repeated sprint performance in experienced soccer players, J Strength Cond Res, 30, pp. 2258-2265, (2016)","R. Van Den Tillaar; Department of Sport Science and Physical Education, Nord University, Levanger, Norway; email: roland.v.tillaar@nord.no","","NSCA National Strength and Conditioning Association","10648011","","","29337832","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-85055601432" "Ocarino J.M.; Resende R.A.; Bittencourt N.F.N.; Correa R.V.A.; Mendonça L.M.; Reis G.F.; Souza T.R.; Fonseca S.T.","Ocarino, Juliana M. (23480457400); Resende, Renan A. (53264832000); Bittencourt, Natalia F.N. (13409617500); Correa, Ricardo V.A. (57219914236); Mendonça, Luciana M. (36069252900); Reis, Guilherme F. (56946472300); Souza, Thales R. (6603712223); Fonseca, Sergio T. (7005476583)","23480457400; 53264832000; 13409617500; 57219914236; 36069252900; 56946472300; 6603712223; 7005476583","Normative data for hip strength, flexibility and stiffness in male soccer athletes and effect of age and limb dominance","2021","Physical Therapy in Sport","47","","","53","58","5","8","10.1016/j.ptsp.2020.11.022","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096078604&doi=10.1016%2fj.ptsp.2020.11.022&partnerID=40&md5=9df363ae9b2d2d5c3bb3a040ddd9befb","Department of Physical Therapy, Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, School of Physical Education, Physical Therapy and Occupational Therapy, Belo Horizonte, MG, Brazil; Department of Physical Therapy, Centro Universitário de Belo Horizonte, Belo Horizonte, MG, Brazil; Department of Physical Therapy, Universidade Federal do Vale do Jequitinhonha e Mucuri, Diamantina, MG, Brazil","Ocarino J.M., Department of Physical Therapy, Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, School of Physical Education, Physical Therapy and Occupational Therapy, Belo Horizonte, MG, Brazil; Resende R.A., Department of Physical Therapy, Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, School of Physical Education, Physical Therapy and Occupational Therapy, Belo Horizonte, MG, Brazil; Bittencourt N.F.N., Department of Physical Therapy, Centro Universitário de Belo Horizonte, Belo Horizonte, MG, Brazil; Correa R.V.A., Department of Physical Therapy, Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, School of Physical Education, Physical Therapy and Occupational Therapy, Belo Horizonte, MG, Brazil; Mendonça L.M., Department of Physical Therapy, Universidade Federal do Vale do Jequitinhonha e Mucuri, Diamantina, MG, Brazil; Reis G.F., Department of Physical Therapy, Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, School of Physical Education, Physical Therapy and Occupational Therapy, Belo Horizonte, MG, Brazil; Souza T.R., Department of Physical Therapy, Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, School of Physical Education, Physical Therapy and Occupational Therapy, Belo Horizonte, MG, Brazil; Fonseca S.T., Department of Physical Therapy, Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, School of Physical Education, Physical Therapy and Occupational Therapy, Belo Horizonte, MG, Brazil","Objective: The objective was to establish normative data for hip strength, flexibility, and stiffness in male soccer athletes and to investigate the effect of age and limb dominance on these variables. Design: Cross-sectional. Setting: Soccer team physical therapy department. Participants: A total of 293 asymptomatic male soccer athletes were assessed. Elite youth players aged 15–17 years and professional adult players aged 18–29 years old. Main outcome measures: Rectus femoris, iliopsoas, hamstring muscle flexibility, passive hip stiffness, and isometric hip strength were measured using a goniometer, inclinometer, and handheld dynamometer, respectively. Descriptive and mixed analyses of variance were used as statistical procedures. Results: The dominant limb had lower iliopsoas (P = 0.010) and rectus femoris (P = 0.003) flexibility and higher external rotators torque compared to the non-dominant limb (P = 0.006) in both age groups. In adult athletes, the dominant limb had lower hip stiffness than the non-dominant limb (P = 0.002). Adults had higher hip external rotator torque than younger athletes (P < 0.0001). No differences were observed for hamstrings flexibility and hip extensors torque. Conclusion: This study provided normative data of hip strength, flexibility, and stiffness for youth and adult male soccer athletes. In addition, there were no clinically relevant inter-limb differences. © 2020 Elsevier Ltd","Asymmetry; Physical therapy; Preseason screening; Reference values","Adolescent; Adult; Age Factors; Athletes; Cross-Sectional Studies; Functional Laterality; Hip; Humans; Male; Muscle Strength; Muscle Strength Dynamometer; Muscle, Skeletal; Quadriceps Muscle; Soccer; Thigh; Torque; Young Adult; adolescent; adult; age; analytic method; Article; asymptomatic disease; biomechanics; controlled study; cross-sectional study; dynamometry; elite athlete; goniometry; hamstring muscle; hip; hip flexibility; hip stiffness; hip strength; human; iliopsoas muscle; inclinometer; inclinometry; joint mobility; joint stiffness; limb dominance; major clinical study; male; muscle isometric contraction; musculoskeletal system parameters; physiotherapy; priority journal; professional athlete; rectus femoris muscle; reference value; soccer player; strength; torque; age; athlete; dynamometer; hemispheric dominance; hip; muscle strength; physiology; quadriceps femoris muscle; skeletal muscle; soccer; thigh; young adult","Araujo V.L., Carvalhais V.O.D.C., Santos T.R.T.D., Goncalves G.G.P., Prado L.S., Fonseca S.T., Characterization of hip passive stiffness of volleyball, basketball and futsal young athletes, Physical Therapy in Sport, 14, 4, pp. 227-231, (2013); Bittencourt N., Ocarino J., Mendonca L., Hewett T., Fonseca S., Foot and hip contributions to high frontal plane knee projection angle in athletes: A classification and regression tree approach, Journal of Orthopaedic & Sports Physical Therapy, 42, 12, pp. 996-1004, (2012); Brunner R., Friesenbichler B., Casartelli N.C., Bizzini M., Maffiuletti N.A., Niedermann K., Effectiveness of multicomponent lower extremity injury prevention programmes in team-sport athletes: An umbrella review, British Journal of Sports Medicine, 53, 5, pp. 282-288, (2018); Carvalhais V., Araujo V., Souza T., Goncalves G., Ocarino J., Fonseca S., Validity and reliability of clinical tests for assessing hip passive stiffness, Manual Therapy, 16, 3, pp. 240-245, (2011); Cejudo A., Sainz de Baranda P., Ayala F., Santonja F., Test-retest reliability of seven common clinical tests for assessing lower extremity muscle flexibility in futsal and handball players, Physical Therapy in Sport, 16, 2, pp. 107-113, (2015); Chumanov E.S., Heiderscheit B.C., Thelen D.G., The effect of speed and influence of individual muscles on hamstring mechanics during the swing phase of sprinting, Journal of Biomechanics, 40, 16, pp. 3555-3562, (2007); Corkery M., Briscoe H., Ciccone N., Foglia G., Johnson P., Kinsman S., Et al., Establishing normal values for lower extremity muscle length in college-age students, Physical Therapy in Sport, 8, 2, pp. 66-74, (2007); Davis D.S., Quinn R.O., Whiteman C.T., Williams J.D., Young C.R., Concurrent validity of four clinical tests used to measure hamstring flexibility, The Journal of Strength & Conditioning Research, 22, 2, pp. 583-588, (2008); DeLang M.D., Rouissi M., Bragazzi N.L., Chamari K., Salamh P.A., Soccer footedness and between-limbs muscle strength: Systematic review and meta-analysis, International Journal of Sports Physiology and Performance, 14, 5, pp. 551-562, (2019); van Dyk N., Farooq A., Bahr R., Witvrouw E., Hamstring and ankle flexibility deficits are weak risk factors for hamstring injury in professional soccer players: A prospective cohort study of 438 players including 78 injuries, The American Journal of Sports Medicine, 46, 9, pp. 2203-2210, (2018); Fonseca S., Souza T., Ocarino J., Goncalves G., Bittencourt N., Applied biomechanics of soccer, Athletic and sports issues in musculoskeletal rehabilitation, pp. 315-329, (2011); Fousekis K., Tsepis E., Vagenas G., Lower limb strength in professional soccer players: Profile, asymmetry, and training age, Journal of Sports Science and Medicine, 9, 3, pp. 364-373, (2010); Gabbe B.J., Finch C.F., Bennell K.L., Wajswelner H., Risk factors for hamstring injuries in community level Australian football, British Journal of Sports Medicine, 39, 2, pp. 106-110, (2005); Gajdosik R.L., Passive extensibility of skeletal muscle: Review of the literature with clinical implications, Clinical Biomechanics, 16, 22, pp. 87-101, (2001); Garcia-Pinillos F., Ruiz-Ariza A., Moreno del Castillo R., Latorre-Roman P., Impact of limited hamstring flexibility on vertical jump, kicking speed, sprint, and agility in young football players, Journal of Sports Sciences, 33, 12, pp. 1293-1297, (2015); Higashihara A., Nagano Y., Ono T., Fukubayashi T., Relationship between the peak time of hamstring stretch and activation during sprinting, European Journal of Sport Science, 16, 1, pp. 36-41, (2016); King M.G., Semciw A.I., Hart H.F., Schache A.G., Middleton K.J., Heerey J.J., Et al., Sub-elite football players with hip-related groin pain and a positive flexion, adduction, and internal rotation test exhibit distinct biomechanical differences compared with the asymptomatic side, Journal of Orthopaedic & Sports Physical Therapy, 48, 7, pp. 584-593, (2018); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, 8, pp. 805-817, (2010); Leporace G., Tannure M., Zeitoune G., Metsavaht L., Marocolo M., Souto Maior A., Association between knee-to-hip flexion ratio during single-leg vertical landings, and strength and range of motion in professional soccer players, Sports Biomechanics, 19, 3, pp. 1-10, (2018); Malliaras P., Hogan A., Nawrocki A., Crossley K., Schache A., Hip flexibility and strength measures: Reliability and association with athletic groin pain, British Journal of Sports Medicine, 43, 10, pp. 739-744, (2009); Manning C., Hudson Z., Comparison of hip joint range of motion in professional youth and senior team footballers with age-matched controls: An indication of early degenerative change?, Physical Therapy in Sport, 10, 1, pp. 25-29, (2009); Mendiguchia J., Alentorn-Geli E., Idoate F., Myer G.D., Rectus femoris muscle injuries in football: A clinically relevant review of mechanisms of injury, risk factors and preventive strategies, British Journal of Sports Medicine, 47, 6, pp. 359-366, (2013); Mosler A.B., Crossley K.M., Thorborg K., Whiteley R.J., Weir A., Serner A., Et al., Hip strength and range of motion: Normal values from a professional football league, Journal of Science and Medicine in Sport, 20, 4, pp. 339-343, (2017); Nagano Y., Higashihara A., Takahashi K., Fukubayashi T., Mechanics of the muscles crossing the hip joint during sprint running, Journal of Sports Sciences, 32, 18, pp. 1722-1728, (2014); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine & Science in Sports & Exercise, 34, 12, pp. 2028-2036, (2002); Page P., Beyond statistical significance: Clinical interpretation of rehabilitation research literature, International Journal of Sports Physical Therapy, 9, 5, pp. 726-736, (2014); Powers C.M., The influence of abnormal hip mechanics on knee injury: A biomechanical perspective, Journal of Orthopaedic & Sports Physical Therapy, 40, 2, pp. 42-51, (2010); Ruan M., Li L., Chen C., Wu X., Stretch could reduce hamstring injury risk during sprinting by right shifting the length-torque curve, The Journal of Strength & Conditioning Research, 32, 8, pp. 2190-2198, (2018); Zambaldi M., Beasley I., Rushton A., Return to play criteria after hamstring muscle injury in professional football: A delphi consensus study, British Journal of Sports Medicine, 51, 16, pp. 1221-1226, (2017)","J.M. Ocarino; Universidade Federal de Minas Gerais, Campus Pampulha, Physical Education, Physical Therapy and Occupational Therapy School, Department of Physical Therapy, Belo Horizonte, Avenida Antônio Carlos 6627, 31270901, Brazil; email: jocarino@ufmg.br","","Churchill Livingstone","1466853X","","PTSHB","33197873","English","Phys. Ther. Sport","Article","Final","","Scopus","2-s2.0-85096078604" "Auer S.; Kubowitsch S.; Süß F.; Renkawitz T.; Krutsch W.; Dendorfer S.","Auer, Simon (57220646547); Kubowitsch, Simone (57220637765); Süß, Franz (6602834214); Renkawitz, Tobias (17346651400); Krutsch, Werner (45961098800); Dendorfer, Sebastian (15042186900)","57220646547; 57220637765; 6602834214; 17346651400; 45961098800; 15042186900","Mental stress reduces performance and changes musculoskeletal loading in football-related movements","2021","Science and Medicine in Football","5","4","","323","329","6","10","10.1080/24733938.2020.1860253","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097495526&doi=10.1080%2f24733938.2020.1860253&partnerID=40&md5=3a764f59b7e32ce7226a0a6d20576efb","Laboratory for Biomechanics, OTH Regensburg, Regensburg, Germany; Regensburg Center of Biomedical Engineering, OTH and University Regensburg, Regensburg, Germany; Department of Orthopaedics and Trauma Surgery, Heidelberg University Hospital, Heidelberg, Germany; Department of Trauma Surgery, Regensburg University Medical Center, Regensburg, Germany","Auer S., Laboratory for Biomechanics, OTH Regensburg, Regensburg, Germany, Regensburg Center of Biomedical Engineering, OTH and University Regensburg, Regensburg, Germany; Kubowitsch S., Laboratory for Biomechanics, OTH Regensburg, Regensburg, Germany; Süß F., Laboratory for Biomechanics, OTH Regensburg, Regensburg, Germany; Renkawitz T., Department of Orthopaedics and Trauma Surgery, Heidelberg University Hospital, Heidelberg, Germany; Krutsch W., Department of Trauma Surgery, Regensburg University Medical Center, Regensburg, Germany; Dendorfer S., Laboratory for Biomechanics, OTH Regensburg, Regensburg, Germany, Regensburg Center of Biomedical Engineering, OTH and University Regensburg, Regensburg, Germany","Purpose: Football players have a high risk of leg muscle injuries, especially when exposed to mental stress. Hence, this study investigated the musculoskeletal response of elite youth football players during highly dynamic movements under stress. The hypothesis is that mental stress reduces performance and changes the muscular forces exerted. Materials & methods: Twelve elite youth football players were subjected to mental stress while performing sports-specific change-of-direction movements. A modified version of the d2 attention test was used as stressor. The kinetics are computed using inverse dynamics. Running times and exerted forces of injury-prone muscles were analysed. Results: The stressor runs were rated more mentally demanding by the players (p = 0.006, rs = 0.37) with unchanged physical demand (p = 0.777, rs = 0.45). This resulted in 10% longer running times under stress (p < 0.001, d = −1.62). The musculoskeletal analysis revealed higher peak muscle forces under mental stress for some players but not for others. Discussion: The study shows that motion capture combined with musculoskeletal computation is suitable to analyse the effects of stress on athletes in highly dynamic movements. For the first time in football medicine, our data quantifies an association between mental stress with reduced football players’ performance and changes in muscle force. © 2020 Informa UK Limited, trading as Taylor & Francis Group.","attention; Biomechanics; muscle injury; musculoskeletal simulation","Adolescent; Athletes; Football; Humans; Leg Injuries; Muscle, Skeletal; Running; Soccer; adolescent; athlete; football; human; injury; leg injury; running; skeletal muscle; soccer","Achenbach L., Krutsch W., Koch M., Zeman F., Nerlich M., Angele P., Contact times of change-of-direction manoeuvres are influenced by age and the type of sports: a novel protocol using the SPEEDCOURT system, Knee Surg Sports Traumatol Arthrosc, 27, pp. 991-999, (2019); Ali N., Andersen M.S., Rasmussen J., Robertson D.G.E., Rouhi G., The application of musculoskeletal modeling to investigate gender bias in non-contact ACL injury rate during single-leg landings, Comput Methods Biomech Biomed Eng, 17, pp. 1602-1616, (2014); Arnason A., Tenga A., Engebretsen L., Bahr R., A prospective video-based analysis of injury situations in elite male football: football incident analysis, Am J Sports Med, 32, pp. 1459-1465, (2004); Atkinson G., Batterham A.M., True and false interindividual differences in the physiological response to an intervention, Exp Physiol, 100, pp. 577-588, (2015); Bartels T., Proeger S., Brehme K., Pyschik M., Delank K.-S., Schulze S., Schwesig R., Fieseler G., The SpeedCourt system in rehabilitation after reconstruction surgery of the anterior cruciate ligament (ACL), Arch Orthop Trauma Surg, 136, pp. 957-966, (2016); Bloemsaat J.G., Meulenbroek R.G.J., van Galen G.P., Differential effects of mental load on proximal and distal arm muscle activity, Exp Brain Res, 167, pp. 622-634, (2005); Born D.-P., Zinner C., Duking P., Sperlich B., Multi-directional sprint training improves change-of-direction speed and reactive agility in young highly trained soccer players, J Sports Sci Med, 15, pp. 314-319, (2016); Brickenkamp R., Schmidt-Atzert L., Liepmann D., d2-R: d2 test of attention - revised, (2016); Damsgaard M., Rasmussen J., Christensen S.T., Surma E., Zee M., Analysis of musculoskeletal systems in the anybody modeling system, Simul. Modell Pract Theory, 14, pp. 1100-1111, (2006); David S., Komnik I., Peters M., Funken J., Potthast W., Identification and risk estimation of movement strategies during cutting maneuvers, J Sci Med Sport, 20, pp. 1075-1080, (2017); Dorn T.W., Schache A.G., Pandy M.G., Muscular strategy shift in human running: dependence of running speed on hip and ankle muscle performance, J Exp Biol, 215, pp. 1944-1956, (2012); Duking P., Born D.-P., Sperlich B., The speedcourt: reliability, usefulness, and validity of a new method to determine change-of-direction speed, Int J Sports Physiol Perform, 11, pp. 130-134, (2016); Ekstrand J., Hagglund M., Walden M., Epidemiology of muscle injuries in professional football (soccer), Am J Sports Med, 39, pp. 1226-1232, (2011); Fukuchi C.A., Fukuchi R.K., Duarte M., Effects of walking speed on gait biomechanics in healthy participants: a systematic review and meta-analysis, Syst Rev, 8, (2019); Hart S.G., Staveland L.E., Development of NASA-TLX (task load index): results of empirical and theoretical research. In: Peter AH, Najmedin M, editors. Human mental workload, 52, pp. 139-183, (1988); Higuchi T., Imanaka K., Hatayama T., Freezing degrees of freedom under stress: kinematic evidence of constrained movement strategies, Hum Mov Sci, 21, pp. 831-846, (2002); Ivarsson A., Johnson U., Psychological factors as predictors of injuries among senior soccer players. a prospective study, J Sports Sci Med, 9, pp. 347-352, (2010); Ivarsson A., Johnson U., Podlog L., Psychological predictors of injury occurrence: a prospective investigation of professional Swedish soccer players, J Sport Rehabil, 22, pp. 19-26, (2013); Jansen P., Lehmann J., Fellner B., Huppertz G., Loose O., Achenbach L., Krutsch W., Relation of injuries and psychological symptoms in amateur soccer players, BMJ Open Sport Exerc Med, 5, (2019); Junge A., Rosch D., Peterson L., Graf-Baumann T., Dvorak J., Prevention of soccer injuries: a prospective intervention study in youth amateur players, Am J Sports Med, 30, pp. 652-659, (2002); Lohse K.R., Sherwood D.E., Thinking about muscles: the neuromuscular effects of attentional focus on accuracy and fatigue, Acta Psychol (Amst), 140, pp. 236-245, (2012); Loose O., Fellner B., Lehmann J., Achenbach L., Krutsch V., Gerling S., Jansen P., Angele P., Nerlich M., Krutsch W., Injury incidence in semi-professional football claims for increased need of injury prevention in elite junior football, Knee Surg Sports Traumatol Arthrosc, 27, pp. 978-984, (2019); Lundberg U., Forsman M., Zachau G., Eklof M., Palmerud G., Melin B., Kadefors R., Effects of experimentally induced mental and physical stress on motor unit recruitment in the trapezius muscle, Work Stress, 16, pp. 166-178, (2002); Marras W.S., Davis K.G., Heaney C.A., Maronitis A.B., Allread W.G., The influence of psychosocial stress, gender, and personality on mechanical loading of the lumbar spine, Spine, 25, pp. 3045-3054, (2000); McCall A., Dupont G., Ekstrand J., Internal workload and non-contact injury: a one-season study of five teams from the UEFA elite club injury study, Br J Sports Med, 52, pp. 1517-1522, (2018); Mendez-Villanueva A., Buchheit M., Simpson B., Bourdon P.C., Match play intensity distribution in youth soccer, Int J Sports Med, 34, pp. 101-110, (2013); Nilsson T., Ostenberg A.H., Alricsson M., Injury profile among elite male youth soccer players in a Swedish first league, J Exerc Rehabil, 12, pp. 83-89, (2016); Nimbarte A.D., Al Hassan M.J., Guffey S.E., Myers W.R., Influence of psychosocial stress and personality type on the biomechanical loading of neck and shoulder muscles, Int J Ind Ergon, 42, pp. 397-405, (2012); Rebelo A., Brito J., Seabra A., Oliveira J., Krustrup P., Physical match performance of youth football players in relation to physical capacity, Eur J Sport Sci, 14, pp. 148-156, (2014); Sakai R., Ohtaki Y., Sakaguchi N., Takahira N., Kenmoku T., Yoshida K., Ujihira M., Analysis of forearm muscle activity aiming at prevention of refractory tennis elbow: comparison of one-handed backhand stroke form, SM Orthopedics Muscular Syst, 2, (2018); Skals S., Jung M.K., Damsgaard M., Andersen M.S., Prediction of ground reaction forces and moments during sports-related movements, Multibody Syst Dyn, 39, pp. 175-195, (2017); Slimani M., Baker J.S., Cheour F., Taylor L., Bragazzi N.L., Steroid hormones and psychological responses to soccer matches: insights from a systematic review and meta-analysis, PLoS ONE, 12, (2017); Srinivasan D., Mathiassen S.E., Hallman D.M., Samani A., Madeleine P., Lyskov E., Effects of concurrent physical and cognitive demands on muscle activity and heart rate variability in a repetitive upper-extremity precision task, Eur J Appl Physiol, 116, pp. 227-239, (2016); Swanik C.B., Covassin T., Stearne D.J., Schatz P., The relationship between neurocognitive function and noncontact anterior cruciate ligament injuries, Am J Sports Med, 35, pp. 943-948, (2007); Weinhandl J.T., Irmischer B.S., Sievert Z.A., Effects of gait speed of femoroacetabular joint forces, Appl Bionics Biomech, (2017); Wijsman J., Grundlehner B., Penders J., Hermens H., Trapezius muscle EMG as predictor of mental stress, ACM Trans Embed Comput Syst, 12, pp. 1-20, (2013); Zinner C., Born D.-P., Sperlich B., Ischemic preconditioning does not alter performance in multidirectional high-intensity intermittent exercise, Front Physiol, 8, (2017)","S. Auer; Laboratory for Biomechanics, Ostbayerische Technische Hochschule Regensburg, Regensburg, Germany; email: simon.auer@oth-regensburg.de","","Taylor and Francis Ltd.","24733938","","","35077309","English","Sci. Med. Footb.","Article","Final","","Scopus","2-s2.0-85097495526" "Kristensen L.B.; Andersen T.B.; Sørensen H.","Kristensen, L.B. (36765384200); Andersen, T. Bull (7201524099); Sørensen, H. (36038149900)","36765384200; 7201524099; 36038149900","Soccer: Optimizing segmental movement in the jumping header in soccer","2004","Sports Biomechanics","3","2","","195","208","13","8","10.1080/14763140408522840","https://www.scopus.com/inward/record.uri?eid=2-s2.0-16644397836&doi=10.1080%2f14763140408522840&partnerID=40&md5=06865051da2640ef049b60ab3a64606f","Department of Sports Science, University of Aarhus, Denmark","Kristensen L.B., Department of Sports Science, University of Aarhus, Denmark; Andersen T.B., Department of Sports Science, University of Aarhus, Denmark; Sørensen H., Department of Sports Science, University of Aarhus, Denmark","This study looks at segmental movements in the jumping header from an optimization viewpoint. Investigations on the header so far have focused on head restriction in the movement but have not clarified how and to what extent body segments influence the performance of the skill. In the present study a biomechanical model was used to analyze the jumping header in simulated competition to give a clear picture of an optimized header. Skilled soccer players headed balls at speeds of 13 m.s.‐1 the results indicated that the head moves as a free non‐restricted segment in the jumping header and should be allowed to do so, even though much soccer literature says otherwise to prevent injuries. The arm movement showed individual characteristics and gave no general advantages in optimizing ball speed after impact in the header. The movement of the legs was, on the other hand, the single most important factor in the skill. Therefore, coaches and players should focus on developing muscle strength in the stomach, back and pelvis and should put no restrictions on head and arm movement to optimize the jumping header. © 2004 Taylor & Francis Group, LLC. All rights reserved.","Heading; Optimization; Segmental movement; Soccer","Adult; Analysis of Variance; Biomechanics; Body Composition; Body Mass Index; Humans; Male; Movement; Muscle, Skeletal; Physical Education and Training; Physical Endurance; Sampling Studies; Sensitivity and Specificity; Soccer; adult; analysis of variance; article; biomechanics; body composition; body mass; endurance; epidemiology; human; male; methodology; movement (physiology); physical education; physiology; sensitivity and specificity; skeletal muscle; sport","Asken J.M., Schwartz R.C., Heading the ball in soccer: What's the risk of brain injury?, The Physician and Sportsmedicine, 26, pp. 37-44, (1998); Barthels K.M., Kriegbaum E., Biomechanics-A Qualitative Approach for Studying Human Movement, (1996); Burslem I., Lees A., Quantifications of impact accelerations of the head during the heading of a football, Science and Football, pp. 243-248, (1988); (2004); Holmich P., Kierulf S., Teamwork for eliteudøvere, Notes from TEAM Danmark Seminar 1989, pp. 1-4, (1989); Kristensen L.B., Investigation of segmental characteristics in powerful soccer heading, Scientific Proceedings of the Xxth International Symposium on Biomechanics in Sports, pp. 409-412, (2002); Liberi V., Richards J.G., Determining linear head accelerations and risk and injury in soccer heading, Abstracts of the U.S. Soccer Symposium on the Sports Medicine of Soccer, (1994); Luhtanen P., (2004); Mawdsley H.P., A biomechanical analysis of heading, Momentum, 3, pp. 30-40, (1978); Peitersen B., Fodboldteknik, ungdomstræningens ABC, (1993); Schneider K., Zernicke R.F., Computer simulation of head impact: Estimation of head-injury risk during soccer heading, International Journal of Sport Biomechanics, 4, pp. 358-371, (1988); Smodlaka V.N., Medical aspects of heading the ball in soccer, The Physician and Sportsmedicine, 12, pp. 127-131, (1984); (2001); Sortland O., Tysvaer A.T., Brain damage in former Association Football players, Neuroradiology, 31, pp. 44-48, (1989); Townend M.S., Is heading the ball a dangerous activity?, Science and Football, pp. 237-242, (1988); Winter D.A., Biomechanics and Motor Control of Human Movement, (1990)","","","","14763141","","","15552580","English","Sports Biomech.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-16644397836" "Nakahira Y.; Taketomi S.; Kawaguchi K.; Mizutani Y.; Hasegawa M.; Ito C.; Uchiyama E.; Ikegami Y.; Fujiwara S.; Yamamoto K.; Nakamura Y.; Tanaka S.; Ogata T.","Nakahira, Yu (57808755500); Taketomi, Shuji (37000367800); Kawaguchi, Kohei (57201548419); Mizutani, Yuri (57219010051); Hasegawa, Masato (57808487200); Ito, Chie (57808352700); Uchiyama, Emiko (57193081164); Ikegami, Yosuke (55325254800); Fujiwara, Sayaka (7401827218); Yamamoto, Ko (35786750700); Nakamura, Yoshihiko (7406394118); Tanaka, Sakae (55555616600); Ogata, Toru (7402000738)","57808755500; 37000367800; 57201548419; 57219010051; 57808487200; 57808352700; 57193081164; 55325254800; 7401827218; 35786750700; 7406394118; 55555616600; 7402000738","Kinematic Differences Between the Dominant and Nondominant Legs During a Single-Leg Drop Vertical Jump in Female Soccer Players","2022","American Journal of Sports Medicine","50","10","","2817","2823","6","7","10.1177/03635465221107388","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85134397836&doi=10.1177%2f03635465221107388&partnerID=40&md5=1d3e69424575b8337c69155797a67af0","Department of Rehabilitation Medicine, Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Tokyo Sports Science Initiative, The University of Tokyo, Tokyo, Japan; The Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan; Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Department of Rehabilitation Medicine, Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan; The Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan","Nakahira Y., Department of Rehabilitation Medicine, Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Taketomi S., Tokyo Sports Science Initiative, The University of Tokyo, Tokyo, Japan, Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Kawaguchi K., Tokyo Sports Science Initiative, The University of Tokyo, Tokyo, Japan, Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Mizutani Y., Tokyo Sports Science Initiative, The University of Tokyo, Tokyo, Japan; Hasegawa M., Department of Rehabilitation Medicine, Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Ito C., Department of Rehabilitation Medicine, Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Uchiyama E., The Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan; Ikegami Y., The Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan; Fujiwara S., Department of Rehabilitation Medicine, Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Yamamoto K., Tokyo Sports Science Initiative, The University of Tokyo, Tokyo, Japan, The Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan; Nakamura Y., Tokyo Sports Science Initiative, The University of Tokyo, Tokyo, Japan, The Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan; Tanaka S., Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Ogata T., Tokyo Sports Science Initiative, The University of Tokyo, Tokyo, Japan, Department of Rehabilitation Medicine, Faculty of Medicine, The University of Tokyo, Tokyo, Japan","Background: In soccer, the roles of the dominant (kicking) and nondominant (supporting) legs are different. The kinematic differences between the actions of the dominant and nondominant legs in female soccer players are not clear. Purpose: To clarify the kinematic differences between dominant and nondominant legs during a single-leg drop vertical jump (DVJ) in female soccer players. Study Design: Controlled laboratory study. Methods: A total of 64 female high school and college soccer players were included in this study. Participants performed a single-leg DVJ test utilizing video motion capture with artificial intelligence during the preseason period. This study assessed the knee flexion angles, knee valgus angles, hip flexion angles, and lower leg anterior inclination angle at 3 time points (initial contact, maximum flexion of the knee, and toe-off) and compared them between the dominant and nondominant legs. These angles were calculated from motion capture data and analyzed in 3 dimensions. A paired t test was used to analyze the differences between legs, and the significance level was set at P <.05. Results: The knee valgus angle at initial contact was greater in the nondominant leg (mean ± SD, 0.8°± 5.2°) than the dominant leg (−0.9°± 4.9°) (P <.01). There were no differences between legs for any other angles at any of the time points. Conclusion: The kinematics of the dominant and nondominant legs of female soccer players in a single-leg DVJ differ in knee valgus angle. Clinical Relevance: Leg dominance is associated with the risk of sports injuries. Kinematic differences between the dominant and nondominant legs may be a noteworthy factor in elucidating the mechanisms and risk of sports injury associated with leg dominance. © 2022 The Author(s).","drop vertical jump; female; leg dominance; soccer","Anterior Cruciate Ligament Injuries; Artificial Intelligence; Athletic Injuries; Biomechanical Phenomena; Female; Humans; Knee Joint; Leg; Soccer; anterior cruciate ligament injury; artificial intelligence; biomechanics; female; human; injury; knee; leg; soccer; sport injury","Alentorn-Geli E., Choi J.H., Stuart J.J., Et al., Inside-out or outside-in suturing should not be considered the standard repair method for radial tears of the midbody of the lateral meniscus: a systematic review and meta-analysis of biomechanical studies, J Knee Surg, 29, 7, pp. 604-612, (2016); Beynnon B.D., Vacek P.M., Newell M.K., Et al., The effects of level of competition, sport, and sex on the incidence of first-time noncontact anterior cruciate ligament injury, Am J Sports Med, 42, 8, pp. 1806-1812, (2014); Brophy R., Silvers H.J., Gonzales T., Mandelbaum B.R., Gender influences: the role of leg dominance in ACL injury among soccer players, Br J Sports Med, 44, 10, pp. 694-697, (2010); Cao Z., Simon T., Wei S., Sheilh Y., Realtime multi-person 2D pose estimation using part affinity fields, 2017 IEEE Conference on Computer Vision and Pattern Recognition, 2017, pp. 1302-1310; Ceroni D., Martin X.E., Delhumeau C., Farpour-Lambert N.J., Bilateral and gender differences during single-legged vertical jump performance in healthy teenagers, J Strength Cond Res, 26, 2, pp. 452-457, (2012); Ekstrand J., Gillquist J., Soccer injuries and their mechanisms: a prospective study, Med Sci Sports Exerc, 15, 3, pp. 267-270, (1983); Engstrom B., Johansson C., Tornkvist H., Soccer injuries among elite female players, Am J Sports Med, 19, 4, pp. 372-375, (1991); Faude O., Junge A., Kindermann W., Dvorak J., Injuries in female soccer players: a prospective study in the German national league, Am J Sports Med, 33, 11, pp. 1694-1700, (2005); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, 10, pp. 1745-1750, (2003); Fort-Vanmeerhaeghe A., Montalvo A.M., Sitja-Rabert M., Kiefer A.W., Myer G.D., Neuromuscular asymmetries in the lower limbs of elite female youth basketball players and the application of the skillful limb model of comparison, Phys Ther Sport, 16, 4, pp. 317-323, (2015); Fukuda Y., Woo S.L., Loh J.C., Et al., A quantitative analysis of valgus torque on the ACL: a human cadaveric study, J Orthop Res, 21, 6, pp. 1107-1112, (2003); Hagglund M., Walden M., Risk factors for acute knee injury in female youth football, Knee Surg Sports Traumatol Arthrosc, 24, 3, pp. 737-746, (2016); Hawkins R.D., Fuller C.W., An examination of the frequency and severity of injuries and incidents at three levels of professional football, Br J Sports Med, 32, 4, pp. 326-332, (1998); Hawkins R.D., Fuller C.W., A prospective epidemiological study of injuries in four English professional football clubs, Br J Sports Med, 33, 3, pp. 196-203, (1999); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J Bone Joint Surg Am, 86, 8, pp. 1601-1608, (2004); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Hewit J.K., Cronin J.B., Hume P.A., Asymmetry in multi-directional jumping tasks, Phys Ther Sport, 13, 4, pp. 238-242, (2012); Holden S., Doherty C., Boreham C., Delahunt E., Sex differences in sagittal plane control emerge during adolescent growth: a prospective investigation, Knee Surg Sports Traumatol Arthrosc, 27, 2, pp. 419-426, (2019); Impellizzeri F.M., Rampinini E., Maffiuletti N., Marcora S.M., A vertical jump force test for assessing bilateral strength asymmetry in athletes, Med Sci Sports Exerc, 39, 11, pp. 2044-2050, (2007); Inklaar H., Soccer injuries. I: incidence and severity, Sports Med, 18, 1, pp. 55-73, (1994); Inoue K., Nunome H., Sterzing T., Shinkai H., Ikegami Y., Dynamics of the support leg in soccer instep kicking, J Sports Sci, 32, 11, pp. 1023-1032, (2014); Kawaguchi K., Taketomi S., Mizutani Y., Et al., Hip abductor muscle strength deficit as a risk factor for inversion ankle sprain in male college soccer players: a prospective cohort study, Orthop J Sports Med, 9, 7, (2021); Kawaguchi K., Taketomi S., Mizutani Y., Et al., Sex-based differences in the drop vertical jump as revealed by video motion capture analysis using artificial intelligence, Orthop J Sports Med, 9, 11, (2021); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J Sports Sci Med, 6, 2, pp. 154-165, (2007); Koga H., Nakamae A., Shima Y., Et al., Mechanisms for noncontact anterior cruciate ligament injuries: knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, 11, pp. 2218-2225, (2010); Krosshaug T., Steffen K., Kristianslund E., Et al., The vertical drop jump is a poor screening test for ACL injuries: response, Am J Sports Med, 44, 6, (2016); Laughlin W.A., Weinhandl J.T., Kernozek T.W., Cobb S.C., Keenan K.G., O'Connor K.M., The effects of single-leg landing technique on ACL loading, J Biomech, 44, 10, pp. 1845-1851, (2011); Leppanen M., Pasanen K., Krosshaug T., Et al., Sagittal plane hip, knee, and ankle biomechanics and the risk of anterior cruciate ligament injury: a prospective study, Orthop J Sports Med, 5, 12, (2017); Markolf K.L., Burchfield D.M., Shapiro M.M., Shepard M.F., Finerman G.A., Slauterbeck J.L., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, 6, pp. 930-935, (1995); Markou S., Vagenas G., Multivariate isokinetic asymmetry of the knee and shoulder in elite volleyball players, Eur J Sport Sci, 6, 1, pp. 71-80, (2006); McMaster W.C., Walter M., Injuries in soccer, Am J Sports Med, 6, 6, pp. 354-357, (1978); Meylan C., McMaster T., Cronin J., Mohammad N.I., Rogers C., Deklerk M., Single-leg lateral, horizontal, and vertical jump assessment: reliability, interrelationships, and ability to predict sprint and change-of-direction performance, J Strength Cond Res, 23, 4, pp. 1140-1147, (2009); Morishige Y., Harato K., Kobayashi S., Niki Y., Et al., Difference in leg asymmetry between female collegiate athletes and recreational athletes during drop vertical jump, J Orthop Surg Res, 14, 1, pp. 424-425, (2019); Numata H., Nakase J., Kitaoka K., Et al., Two-dimensional motion analysis of dynamic knee valgus identifies female high school athletes at risk of non-contact anterior cruciate ligament injury, Knee Surg Sports Traumatol Arthrosc, 26, 2, pp. 442-447, (2018); Ohashi T., Ikegami Y., Yamamoto K., Takano W., Nakamura Y., Video motion capture from the part confidence maps of multi-camera images by spatiotemporal filtering using the human skeletal model, Internal Conference on Intelligent Robotic and Systems, 2018, pp. 4226-4231; Rahnama N., Reilly T., Lees A., Injury risk associated with playing actions during competitive soccer, Br J Sports Med, 36, 5, pp. 354-359, (2002); Sandelin J., Santavirta S., Kiviluoto O., Acute soccer injuries in Finland in 1980, Br J Sports Med, 19, 1, pp. 30-33, (1985); Shimokochi Y., Shultz S.J., Mechanisms of noncontact anterior cruciate ligament injury, J Athl Train, 43, 4, pp. 396-408, (2008); Taketomi S., Kawaguchi K., Mizutani Y., Et al., Anthropometric and musculoskeletal gender differences in young soccer players, J Sports Med Phys Fitness; Theoharopoulos A., Tsitskaris G., Nikopoulou M., Knee strength of professional basketball players, J Strength Cond Res, 14, 4, pp. 457-463, (2000); Uhorchak J.M., Scoville C.R., Williams G.N., Arciero R.A., St Pierre P., Taylor D.C., Risk factors associated with noncontact injury of the anterior cruciate ligament: a prospective four-year evaluation of 859 West Point cadets, Am J Sports Med, 31, 6, pp. 831-842, (2003); Wei S., Ramakrishna V., Kanade T., Sheikh Y., Convolutional pose machines, 2016 IEEE Conference on Computer Vision and Pattern Recognition, 2016, pp. 4724-4732","S. Taketomi; Tokyo Sports Science Initiative, The University of Tokyo, Tokyo, Japan; email: takeos-tky@umin.ac.jp","","SAGE Publications Inc.","03635465","","AJSMD","35850117","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-85134397836" "Gammons M.R.","Gammons, Matthew R. (20733969100)","20733969100","Helmets in sport: Fact and fallacy","2013","Current Sports Medicine Reports","12","6","","377","380","3","9","10.1249/JSR.0000000000000016","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892718566&doi=10.1249%2fJSR.0000000000000016&partnerID=40&md5=f689e2c437347bb6f48fbe5bff4e7f1a","Vermont Orthopaedic Clinic, Department of Family and Community Medicine, Medical College of Wisconsin, Rutland, VT 05701, 3 Albert Cree Drive, United States","Gammons M.R., Vermont Orthopaedic Clinic, Department of Family and Community Medicine, Medical College of Wisconsin, Rutland, VT 05701, 3 Albert Cree Drive, United States","Head injuries and the prevention of both the short-term and long-term consequences have received heightened awareness in recent years. Education and legislative efforts have promoted both appropriate treatment of concussion and pushed the use of helmets for protection from head injuries. Current scientific data would suggest that helmets are effective at decreasing the risk of serious head injuries. However there is no evidence to suggest that helmets are protective against concussive injuries or the long-term impact of repetitive head trauma. Copyright © 2013 by the American College of Sports Medicine.","","Athletic Injuries; Craniocerebral Trauma; Evidence-Based Medicine; Head Protective Devices; Humans; Prevalence; Risk Assessment; Sports Equipment; article; awareness; biomechanics; chronic disease; clinical study; concussion; football; head injury; helmet; human; law; neck injury; risk factor; rugby; soccer; sport; standard; traumatic brain injury","Amoros E., Chiron M., Martin J.L., Et al., Bicycle helmet wearing and the risk of head, face, and neck injury: A french case-control study based on a road trauma registry, Inj. Prev., 18, pp. 27-32, (2012); Attewell R.G., Glase K., McFadden M., Bicycle helmet efficacy: A meta-analysis, Accid. Anal. Prev., 33, pp. 345-352, (2001); Bartsch A., Benzel E., Miele V., Et al., Hybrid III anthropomorphic test device (ATD) response to head impacts and potential implications for athletic headgear testing, Accid. Anal. Prev., 48, pp. 285-291, (2012); Beckwith J.G., Greenwald R.M., Chu J.J., Measuring head kinematics in football: Correlation between the head impact telemetry system and hybrid III headform, Ann. Biomed. Eng., 40, pp. 237-248, (2012); Biasca N., Wirth S., Tegner Y., The avoidability of head and neck injuries in ice hockey: An historical review, Br. J. Sports Med., 36, pp. 410-427, (2002); Broglio S.P., Eckner J.T., Martini D., Et al., Cumulative head impact burden in high school football, J. Neurotrauma., 28, pp. 2069-2078, (2011); Broglio S.P., Eckner J.T., Surma T., Kutcher J.S., Post-concussion cognitive declines and symptomatology are not related to concussion biomechanics in high school football players, J. Neurotrauma., 28, pp. 2061-2068, (2011); Collins M., Lovell M.R., Iverson G.L., Et al., Examining concussion rates and return to play in high school football players wearing newer helmet technology: A three-year prospective cohort study, Neurosurgery., 58, pp. 275-286, (2006); Crisco J.J., Wilcox B.J., Beckwith J.G., Et al., Head impact exposure in collegiate football players, J. Biomech., 44, pp. 2673-2678, (2011); Cusimano M.D., Kwok J., The effectiveness of helmet wear in skiers and snowboarders: A systematic review, Br. J. Sports Med., 44, pp. 781-786, (2010); Daneshvar D.H., Baugh C.M., Nowinski C.J., Et al., Helmets and mouth guards: The role of personal equipment in preventing sport-related concussions, Clin. Sports Med., 30, pp. 145-163, (2011); Duhaime A.C., Beckwith J.G., Maerlender A.C., Et al., Spectrum of acute clinical characteristics of diagnosed concussions in college athletes wearing instrumented helmets: Clinical article, J. Neurosurg., 117, pp. 1092-1099, (2012); Eckner J.T., Sabin M., Kutcher J.S., Broglio S.P., No evidence for a cumulative impact effect on concussion injury threshold, J. Neurotrauma., 28, pp. 2079-2090, (2011); Forbes J.A., Awad A.J., Zuckerman S., Et al., Association between biomechanical parameters and concussion in helmeted collisions in American football: A review of the literature, Neurosurg. Focus., 33, E10, pp. 1-6, (2012); Guskiewicz K.M., Mihalik J.P., Biomechanics of sport concussion: Quest for the elusive injury threshold, Exerc. Sport Sci. Rev., 39, pp. 4-11, (2011); Hagel B.E., Russell K., Goulet C., Et al., Helmet use and risk of neck injury in skiers and snowboarders, Am. J. Epidemiol., 171, pp. 1134-1143, (2010); Hansen K., Dau N., Feist F., Et al., Angular impact mitigation system for bicycle helmets to reduce head acceleration and risk of traumatic brain injury, Accid. Anal. Prev., 59 C, pp. 109-117, (2013); Harmon K.G., Drezner J., Gammons M., Et al., American medical society for sports medicine position statement: Concussion in sport, Clin. J. Sport Med., 23, pp. 1-18, (2013); Hollis S.J., Stevenson M.R., McIntosh A.S., Et al., Incidence, risk, and protective factors of mild traumatic brain injury in a cohort of Australian nonprofessional male rugby players, Am. J. Sports Med., 37, pp. 2328-2333, (2009); Jadischke R., Viano D.C., Dau N., Et al., On the accuracy of the head impact telemetry (HIT) system used in football helmets, J. Biomech., 46, pp. 2310-2315, (2013); Kemp S.P.T., Hudson Z., Brooks J.H.M., Fuller C.W., The epidemiology of head injuries in English professional rugby union, Clin. J. Sport Med., 18, pp. 227-234, (2008); McCrory P., Meeuwisse W.H., Aubry M., Et al., Consensus statement on concussion in sport - The 4th international conference on concussion in sport held in zurich, november 2012, Clin. J. 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Anal., 31, pp. 1187-1195, (2011); Gammons M.R., Hatzenbuehler J.R., Et al., Agreement of ski patrol and emergency department assessment of severe head injury, CJSM, 21, (2011); Rivara F.P., Thompson D.C., Thompson R.S., Epidemiology of bicycle injuries and risk factors for serious injury, Inj. Prev., 3, pp. 110-114, (1997); Rowson S., Beckwith J.G., Chu J.J., Et al., A six degree of freedom head acceleration measurement device for use in football, J. Appl. Biomech., 27, pp. 8-14, (2011); Rowson S., Daniel R.W., Duma S.M., Biomechanical performance of leather and modern football helmets, J. Neurosurg., 119, pp. 805-809, (2013); Rowson S., Duma S.M., Brain injury prediction: Assessing the combined probability of concussion using linear and rotational head acceleration, Ann. Biomed. Eng., 41, pp. 873-882, (2013); Rowson S., Duma S.M., Development of the STAR evaluation system for football helmets: Integrating player head impact exposure and risk of concussion, Ann. Biomed. Eng., 39, pp. 2130-2140, (2011); Rowson S., Duma S.M., Beckwith J.G., Et al., Rotational head kinematics in football impacts: An injury risk function for concussion, Ann. Biomed. Eng., 40, pp. 1-13, (2012); Ruedl G., Abart M., Ledochowski L., Et al., Self reported risk taking and risk compensation in skiers and snowboarders are associated with sensation seeking, Accid. Anal. Prev., 48, pp. 292-296, (2012); Ruedl G., Kopp M., Burtscher M., Does risk compensation undo the protection of ski helmet use?, Epidemiology., 23, pp. 936-937, (2012); Russell K., Christie J., Hagel B.E., The effect of helmets on the risk of head and neck injuries among skiers and snowboarders: A meta-analysis, CMAJ, 182, pp. 333-340, (2010); Scott M.D., Buller D.B., Andersen P.A., Et al., Testing the risk compensation hypothesis for safety helmets in alpine skiing and snowboarding, Inj. Prev., 13, pp. 173-177, (2007); Shealy J.E., Ettlinger C.F., Johnson R.J., How fast do winter sports participants travel on alpine slopes?, Journal of ASTM International, 2, 7, (2005); Shealy J.E., Johnson R.J., Ettlinger C.F., Do helmets reduce fatalities or merely alter the patterns of death?, Journal of ASTM International, 5, 10, (2008); Thompson D.C., Rivara F., Thompson R., Helmets for preventing head and facial injuries in bicyclists, Cochrane Database Syst. Rev., 2, (2000); Torg J.S., Harris S.M., Rogers K., Et al., Retrospective report on the effectiveness of a polyurethane football helmet cover on the repeated occurrence of cerebral concussions, Am. J. Orthop. (Belle Mead NJ), 28, pp. 128-132, (1999); Urban J.E., Davenport E.M., Golman A.J., Et al., Head impact exposure in youth football: High school ages 14 to 18 years and cumulative impact analysis, Ann. Biomed. Eng., (2013); Yi J., Padalino D.J., Chin L.S., Et al., Chronic traumatic encephalopathy, Curr. Sports Med. Rep., 12, pp. 28-32, (2013)","M.R. Gammons; Vermont Orthopaedic Clinic, Department of Family and Community Medicine, Medical College of Wisconsin, Rutland, VT 05701, 3 Albert Cree Drive, United States; email: mgammons@rrmc.org","","","15378918","","","24225522","English","Curr. Sports Med. Rep.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-84892718566" "Fritsch C.G.; Dornelles M.P.; Oliveira G.D.S.; Baroni B.M.","Fritsch, Carolina G. (56911988000); Dornelles, Maurício P. (57188878466); Oliveira, Gabriel dos S. (57201460212); Baroni, Bruno M. (36872912000)","56911988000; 57188878466; 57201460212; 36872912000","Poor hamstrings-to-quadriceps torque ratios in male soccer players: weak hamstrings, strong quadriceps, or both?","2023","Sports Biomechanics","22","7","","811","821","10","7","10.1080/14763141.2020.1766100","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086923122&doi=10.1080%2f14763141.2020.1766100&partnerID=40&md5=020cba9c358f5696c42592179e39c154","Department of Physiotherapy, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil","Fritsch C.G., Department of Physiotherapy, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil; Dornelles M.P., Department of Physiotherapy, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil; Oliveira G.D.S., Department of Physiotherapy, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil; Baroni B.M., Department of Physiotherapy, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil","This study aimed to evaluate the influence of hamstrings and quadriceps strength on the hamstrings-to-quadriceps conventional (H:Qcon) and functional (H:Qfun) ratios in male soccer players. Quadriceps concentric peak torque (PT) and hamstrings concentric and eccentric PT were assessed with isokinetic dynamometry at 60°/s in 101 players (202 legs). The cut-points of 0.50, 0.55 and 0.60 were used to assess muscle imbalance through the H:Qcon ratio, while 0.80, 0.85 and 0.90 were used for H:Qfun ratio. Legs with lower H:Qcon ratio had decreased hamstrings concentric PT (p < 0.01; moderate and large effect sizes) and increased quadriceps concentric PT (p < 0.01; moderate effect sizes) in all cut-points. Legs with lower H:Qfun ratio had decreased hamstrings eccentric PT (p < 0.01; large effect sizes) for all cut-points, and controversial results for quadriceps concentric PT (p < 0.01 only for 0.80 cut-point; small effect sizes). H:Qcon ratio presented only weak correlations with quadriceps (r = −0.37) and hamstrings (r = 0.45) concentric PT, while H:Qfun ratio had a negligible correlation with quadriceps concentric PT (r = −0.30) and a moderate correlation with hamstrings eccentric PT (r = 0.66). In conclusion, our findings support that hamstrings strength deficit is the key factor for low H:Q ratios in male soccer players, especially those with poor H:Qfun ratio. © 2020 Informa UK Limited, trading as Taylor & Francis Group.","Football; knee extensor; knee flexor; muscle imbalance; strength ratio","Biomechanical Phenomena; Humans; Male; Muscle Strength; Muscle, Skeletal; Quadriceps Muscle; Soccer; Torque; adult; article; controlled study; dynamometry; effect size; football; hamstring muscle; human; knee; male; muscle training; quadriceps femoris muscle; soccer player; torque; biomechanics; muscle strength; physiology; quadriceps femoris muscle; skeletal muscle; soccer; torque","Al Attar W.S.A., Soomro N., Sinclair P.J., Pappas E., Sanders R.H., Effect of injury prevention programs that include the nordic hamstring exercise on hamstring injury rates in soccer players: A systematic review and meta-analysis, Sports Medicine, 47, pp. 907-916, (2017); Bahr R., Clarsen B., Ekstrand J., Why we should focus on the burden of injuries and illnesses, not just their incidence, British Journal of Sports Medicine, 52, 1018-1021, (2017); Baroni B.M., Ruas C.V., Ribeiro-Alvares J.B., Pinto R.S., Hamstring-to-quadriceps torque ratios of professional male soccer players: A systematic review, Journal of Strength and Conditioning Research, 34, pp. 281-293, (2020); Bittencourt N.F.N., Meeuwisse W.H., Mendonca L.D., Nettel-Aguirre A., Ocarino J.M., Fonseca S.T., Complex systems approach for sports injuries: Moving from risk factor identification to injury pattern recognition-narrative review and new concept, British Journal of Sports Medicine, 50, pp. 1309-1314, (2016); Bogdanis G.C., Kalapotharakos V.I., Knee extension strength and hamstrings-to-quadriceps imbalances in elite soccer players, International Journal of Sports Medicine, 37, pp. 119-124, (2016); Buckthorpe M., Wright S., Bruce-Low S., Nanni G., Sturdy T., Gross A.S., Bowen L., Styles B., Della Villa S., Davison M., Gimpel M., Recommendations for hamstring injury prevention in elite football: Translating research into practice, British Journal of Sports Medicine, 53, pp. 449-456, (2019); Cohen J., Statistical power analysis for the behavioral sciences, (1977); Coombs R., Garbutt G., Developments in the use of the hamstring/quadriceps ratio for the assessment of muscle balance, Journal of Sports Science & Medicine, 1, pp. 56-62, (2002); Croisier J.-L., Forthomme B., Namurois M.-H., Vanderthommen M., Crielaard J.-M., Hamstring muscle strain recurrence and strength performance disorders, The American Journal of Sports Medicine, 30, pp. 199-203, (2002); Croisier J.-L., Ganteaume S., Binet J., Genty M., Ferret J.-M., Strength imbalances and prevention of hamstring injury in professional soccer players: A prospective study, The American Journal of Sports Medicine, 36, pp. 1469-1475, (2008); Dauty M., Menu P., Fouasson-Chailloux A., Cutoffs of isokinetic strength ratio and hamstring strain prediction in professional soccer players, Scandinavian Journal of Medicine & Science in Sports, 28, pp. 276-281, (2018); De Abreu Camarda S.R., Denadai B.S., Does muscle imbalance affect fatigue after soccer specific intermittent protocol?, Journal of Science and Medicine in Sport, 15, pp. 355-360, (2012); De Araujo Ribeiro Alvares J.B., Rodrigues R., de Azevedo Franke R., da Silva B.G.C., Pinto R.S., Vaz M.A., Baroni B.M., Inter-machine reliability of the Biodex and Cybex isokinetic dynamometers for knee flexor/extensor isometric, concentric and eccentric tests, Physical Therapy in Sport, 16, pp. 59-65, (2015); Dvir Z., Eger G., Halperin N., Shklar A., Thigh muscle activity and anterior cruciate ligament insufficiency, Clinical Biomechanics, 4, pp. 87-91, (1989); Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: The UEFA injury study, British Journal of Sports Medicine, 45, pp. 553-558, (2011); Ekstrand J., Walden M., Hagglund M., Hamstring injuries have increased by 4% annually in men’s professional football, since 2001: A 13-year longitudinal analysis of the UEFA Elite Club injury study, British Journal of Sports Medicine, 50, pp. 731-737, (2016); Greco C.C., Da Silva W.L., Camarda S.R.A., Denadai B.S., Rapid hamstrings/quadriceps strength capacity in professional soccer players with different conventional isokinetic muscle strength ratios, Journal of Sports Science & Medicine, 11, pp. 418-422, (2012); Hamilton R.T., Shultz S.J., Schmitz R.J., Perrin D.H., Triple-hop distance as a valid predictor of lower limb strength and power, Journal of Athletic Training, 43, pp. 144-151, (2008); Hawkins R.D., Fuller C.W., An examination of the frequency and severity of injuries and incidents at three levels of professional football, British Journal of Sports Medicine, 32, pp. 326-332, (1998); Heiderscheit B.C., Sherry M.A., Silder A., Chumanov E.S., Thelen D.G., Hamstring strain injuries: Recommendations for diagnosis, rehabilitation, and injury prevention, The Journal of Orthopaedic and Sports Physical Therapy, 40, pp. 67-81, (2010); Hislop H.J., Perrine J.J., The isokinetic concept of exercise, Physical Therapy, 47, pp. 114-117, (1967); Lee J.W.Y., Mok K.-M., Chan H.C.K., Yung P.S.H., Chan K.-M., Eccentric hamstring strength deficit and poor hamstring-to-quadriceps ratio are risk factors for hamstring strain injury in football: A prospective study of 146 professional players, Journal of Science and Medicine in Sport, 21, pp. 789-793, (2018); McCall A., Carling C., Nedelec M., Davison M., Le Gall F., Berthoin S., Dupont G., Risk factors, testing and preventative strategies for non-contact injuries in professional football: Current perceptions and practices of 44 teams from various premier leagues, British Journal of Sports Medicine, 48, pp. 1352-1357, (2014); Medeiros T.M., Ribeiro-Alvares J.B., Fritsch C.G., Oliveira G.S., Severo-Silveira L., Pappas E., Baroni B.M., Effect of weekly training frequency with the nordic hamstring exercise on muscle strain risk factors in football players: A randomized trial, International Journal of Sports Physiology and Performance, Ahead of Print; Meurer M.C., Silva M.F., Baroni B.M., Strategies for injury prevention in Brazilian football: Perceptions of physiotherapists and practices of premier league teams, Physical Therapy in Sport, 28, pp. 1-8, (2017); Mjolsnes R., Arnason A., Osthagen T., Raastad T., Bahr R., A 10-week randomized trial comparing eccentric vs. concentric hamstring strength training in well-trained soccer players, Scandinavian Journal of Medicine & Science in Sports, 14, pp. 311-317, (2004); Monajati A., Larumbe-Zabala E., Goss-Sampson M., Naclerio F., Injury prevention programs based on flywheel vs. body weight resistance in recreational athletes, Journal of Strength and Conditioning Research, (2018); Monajati A., Larumbe-Zabala E., Goss-Sampson M., Naclerio F., Cavarretta E., The effectiveness of injury prevention programs to modify risk factors for non-contact anterior cruciate ligament and hamstring injuries in uninjured team sports athletes: A systematic review, PloS One, 11, (2016); Opar D.A., Williams M.D., Timmins R.G., Hickey J., Duhig S.J., Shield A.J., Eccentric hamstring strength and hamstring injury risk in Australian footballers, Medicine and Science in Sports and Exercise, 47, pp. 857-865, (2015); Orchard J., Marsden J., Lord S., Garlick D., Preseason hamstring muscle weakness associated with hamstring muscle injury in Australian footballers, American Journal of Sports Medicine, 25, pp. 81-85, (1997); Ribeiro-Alvares J.B., Dornelles M.P., Fritsch C.G., de Lima E.S.F.X., Medeiros T.M., Severo-Silveira L., Marques V.B., Baroni B.M., Prevalence of hamstring strain injury risk factors in professional and under-20 male football (Soccer) players, Journal of Sport Rehabilitation, (2019); Ruas C.V., Brown L.E., Lima C.D., Costa P.B., Pinto R.S., Effect of three different muscle action training protocols on knee strength ratios and performance, Journal of Strength and Conditioning Research, 32, pp. 2154-2165, (2018); Stastny P., Lehnert M., Tufano J.J., Muscle imbalances: Testing and training functional eccentric hamstring strength in athletic populations, Journal of Visualized Experiments, 1, (2018); Timmins R.G., Bourne M.N., Shield A.J., Williams M.D., Lorenzen C., Opar D.A., Short biceps femoris fascicles and eccentric knee flexor weakness increase the risk of hamstring injury in elite football (soccer): A prospective cohort study, British Journal of Sports Medicine, 50, pp. 1524-1535, (2016); Van Dyk N., Bahr R., Burnett A.F., Whiteley R., Bakken A., Mosler A., Farooq A., Witvrouw E., A comprehensive strength testing protocol offers no clinical value in predicting risk of hamstring injury: A prospective cohort study of 413 professional football players, British Journal of Sports Medicine, 51, pp. 1695-1702, (2017); Van Dyk N., Bahr R., Whiteley R., Tol J.L., Kumar B.D., Hamilton B., Farooq A., Witvrouw E., Hamstring and quadriceps isokinetic strength deficits are weak risk factors for hamstring strain injuries, The American Journal of Sports Medicine, 44, pp. 1789-1795, (2016); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., The Football Association Medical Research Programme: An audit of injuries in professional football–analysis of hamstring injuries, British Journal of Sports Medicine, 38, pp. 36-41, (2004); Yeung S.S., Suen A.M.Y., Yeung E.W., A prospective cohort study of hamstring injuries in competitive sprinters: Preseason muscle imbalance as a possible risk factor, British Journal of Sports Medicine, 43, pp. 589-594, (2009)","C.G. Fritsch; Institute of Bone and Joint Research, The Kolling Institute, Northern Clinical School, Faculty of Medicine and Health, The University of Sydney, Australia; email: cgas5003@sydney.edu.au","","Routledge","14763141","","","32508266","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-85086923122" "Langhout R.; Tak I.; Van Der Westen R.; Lenssen T.","Langhout, Rob (55311330400); Tak, Igor (55889523500); Van Der Westen, Roelof (57193575275); Lenssen, Ton (24314690700)","55311330400; 55889523500; 57193575275; 24314690700","Range of motion of body segments is larger during the maximal instep kick than during the submaximal kick in experienced football players","2017","Journal of Sports Medicine and Physical Fitness","57","4","","388","395","7","8","10.23736/S0022-4707.16.06107-7","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85015008974&doi=10.23736%2fS0022-4707.16.06107-7&partnerID=40&md5=3eb29e2d26248d7190ec9513a3f1a636","Physiotherapy Institute Dukenburg, Aldenhof 7003, Nijmegen, 6537 DZ, Netherlands; Institute for Master Education in Musculoskeletal Therapies (SOMT), Amersfoort, Netherlands; Dutch Institute for Allied Health Care (NPi), Amersfoort, Netherlands; Fysiotherapie Utrecht Oost B.V., Utrecht, Netherlands; Academic Medical Center, Department of Orthopedics and Sports Traumatology, Amsterdam, Netherlands; Academic Center for Evidence-based Sports Medicine (ACES), Amsterdam, Netherlands; FysioStofberg, Maastricht, Netherlands; Maastricht University Medical Center, Department of Physical Therapy, Maastricht, Netherlands","Langhout R., Physiotherapy Institute Dukenburg, Aldenhof 7003, Nijmegen, 6537 DZ, Netherlands, Institute for Master Education in Musculoskeletal Therapies (SOMT), Amersfoort, Netherlands, Dutch Institute for Allied Health Care (NPi), Amersfoort, Netherlands; Tak I., Dutch Institute for Allied Health Care (NPi), Amersfoort, Netherlands, Fysiotherapie Utrecht Oost B.V., Utrecht, Netherlands, Academic Medical Center, Department of Orthopedics and Sports Traumatology, Amsterdam, Netherlands, Academic Center for Evidence-based Sports Medicine (ACES), Amsterdam, Netherlands; Van Der Westen R., FysioStofberg, Maastricht, Netherlands; Lenssen T., Maastricht University Medical Center, Department of Physical Therapy, Maastricht, Netherlands","BACKGROUND: Football players with groin injury refrain from maximal kicking. Previous groin injury is related to decreased hip range of motion (ROM). Information on ROM differences between maximal and submaximal kicking within players is lacking. The first aim of this study is to quantify ROM of body segments during the maximal (MaxK) and submaximal (SubK) instep kick at four key points. The second aim is to study ROM differences of tension arc and movement trajectories between MaxK and SubK. METHODS: Maximal (100% ball speed) and submaximal (70% ball speed) instep kicks from 15 experienced football players were registered with motion capture. ROM of hip, spine, pelvis and knee segments were determined at four key points. Differences in segmental ROM for the tension arc and movement trajectories between MaxK and SubK were studied. Effect sizes (ES) were calculated. RESULTS: Ball speed was 98.8±9.0 km/h for MaxK and 69.5±7.1 km/h for SubK. Three key points timed similarly (P<0.05) for MaxK and SubK. MaxK shows increased ROM for all segments (P<0.05) but not for hip flexion. MaxK results in enlargement of tension arc and movement trajectories. Spine flexion (ES=3.2) and pelvis posterior tilt (ES=2.2) show the greatest relative increase. CONCLUSIONS: Maximal kicking shows larger segmental ROM than submaximal kicking. Enlargement of tension arc and movement trajectories relate to increased segmental velocity, according to biomechanical concepts. Central body actions play an important role in kicking. This information can be used to further identify kicking strategies in athletes with injury. © 2016 EDIZIONI MINERVA MEDICA.","Articular range of motion; Athletic injuries; Football; Groin","Adult; Biomechanical Phenomena; Humans; Image Processing, Computer-Assisted; Lower Extremity; Male; Movement; Muscle, Skeletal; Range of Motion, Articular; Soccer; adult; biomechanics; comparative study; human; image processing; joint characteristics and functions; lower limb; male; movement (physiology); physiology; skeletal muscle; soccer","Andersen T., Dorge C., The influence of speed of approach and accuracy constraint on the maximal speed of the ball in soccer kicking, Scand J Med Sci Spor, 21, pp. 79-84, (2011); Lees A., Nolan L., Biomechanics of soccer - A review, J Sports Sci, 16, pp. 211-234, (1998); Masuda K., Kikuhara N., Demura S., Yamanaka K., Katsuta S., Relationship between muscle strength in various isokinetic movements and kick performance among soccer players, J Sports Med Phys Fitness, 45, pp. 44-52, (2005); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, J Sports Sci, 24, pp. 529-541, (2006); Serner A., Tol J., Jomaah N., Weir A., Whiteley R., Thorborg K., Robinson M., Holmich P., Diagnosis of acute groin injuries: A prospective study of 110 athletes, Am J Sports Med, 43, pp. 1857-1864, (2015); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sport Biomech, 4, pp. 59-72, (2005); Brophy R., Backus S., Pansy B., Lyman S., Williams R., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, J Orthop Sports Phys Ther, 37, pp. 260-268, (2007); Langhout R., Weber B., Tak I., Lenssen T., Timing characteristics of body segments during the maximal instep kick in experienced football players, J Sports Med Phys Fitness, 56, pp. 849-856, (2015); Bober T., Putnam C., Woodworth G., Factors influencing the angular velocity of a human limb segment, J Biomech, 20, pp. 511-521, (1987); Young W., Clothier P., Otago L., Bruce L., Liddell D., Acute effects of exercise on kicking accuracy in elite Australian football, J Sci Med Sport, 13, pp. 85-89, (2004); Putnam C., Sequential motions of body segments in striking and throwing skills: Descriptions and explanations, J Biomech, 26, pp. 125-135, (1993); Witt De J., Hinrichs R., Mechanical factors associated with the development of high ball velocity during an instep soccer kick, Sports Biomech, 11, pp. 282-290, (2012); Juarez D., Mallo J., De Subijana C., Navarro E., Kinematic analysis of kicking in young top-class soccer players, J Sports Med Phys Fitness, 51, pp. 366-373, (2011); Lees A., Steward I., Rahnama N., Barton G., Lower limb function in the maximal instep kick in soccer, Contemporary sport, leisure and ergonomics, pp. 149-160, (2009); Charnock B., Lewis C., Adductor longus mechanics during the maximal effort soccer kick, Sports Biomech, 8, pp. 223-234, (2009); Hagglund M., Walden M., Ekstrand J., Previous injury as a risk factor for injury in elite football. A prospective study over two consecutive seasons, Br J Sports Med, 40, pp. 767-772, (2006); Whittaker J.L., Small C., Maffey L., Emery C., Risk factors for groin injury in sport: An updated systematic review, Br J Sports Med, 49, pp. 803-809, (2015); Arnason A., Sigurdsson S.B., Gudmundsson A., Holme I., Engebretsen L., Bahr R., Risk factors for injuries in football, Am J Sports Med., 32, pp. 5-16, (2004); Ibrahim A., Murreil G., Knapman P., Adductor strain and hip range of movement in male professional soccer players, J Orthop Surg (Hong Kong), 15, pp. 46-49, (2007); Mosler A.B., Agricola R., Weir A., Holmich P., Crossley K., Which factors differentiate athletes with hip/groin pain from those without? A systematic review with meta-analysis, Br J Sports Med, 49, (2015); Verrall G., Hamilton I., Slavotinek J., Oakeshott R., Spriggins A., Barnes P., Et al., Hip joint range of motion reduction in sports-related chronic groin injury diagnosed as pubic bone stress injury, J Sci Med Sport, 8, pp. 77-84, (2005); Tak I., Glasgow P., Langhout R., Weir A., Kerkhoffs G., Agricola R., Hip range of motion is lower in professional football players with hip and groin symptoms or previous injury, independent of cam deformity, A J Sports Med, 44, pp. 682-688, (2016); Holmich P., Long-standing groin pain in sportspeople falls into three primary patterns, a ""clinical entity"" approach: A prospective study of 207 patients, Br J Sports Med, 4, pp. 247-252, (2007); Tak I., Langhout R., Groin injury in soccer. Steps towards a sport-specific approach. From hypothesis to physical examination and treatment, Aspetar Sports Med J, 6, pp. 272-277, (2014); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med Sci Sport Exer, 34, pp. 2028-2036, (2002); Zernicke R., Roberts E., Lower extremity forces and torques during systematic variation of non-weight bearing motion, Med Sci Sport, 10, pp. 21-26, (1978); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med Sci Sport Exer, 30, pp. 917-927, (1998); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Aagaard H., Dyhre-Poulsen P., Et al., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scand J Med Sci Sports, 9, pp. 195-200, (1999); Cavagna G., Storage and utilization of elastic energy in skeletal muscle, Exerc Sport Sci Rev, 5, pp. 89-129, (1977); Naito K., Fukui Y., Maruyama T., Multijoint kinetic chain analysis of knee extension during the soccer instep kick, Hum Mov Sci, 29, pp. 259-276, (2010); Kapandji I., Physiology of the joints: Lower limb, 2, (2010); Asami T., Togashi H., Study on kicking in soccer, Japan J Phys Educ Hlth Sport Sci, 12, pp. 267-272, (1968); Luthanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 143-148, (1988); Robertson D., Mosher P., Work and power of the leg muscles in soccer kicking, Biomechanics IX-B, pp. 533-538, (1985); Schache A., Blanch P., Rath D., Wrigley T., Benneil K., Three-dimensional angular kinematics of the lumbar spine and pelvis during running, Hum Mov Sci, 21, pp. 273-293, (2002); Putnam C., Asegment interaction analysis of proximal-to-distal sequential segment motion patterns, Med Sci Sport Exer, 23, pp. 130-141, (1991); Zajac F.E., Neptune R.R., Kautz S.A., Biomechanics and muscle coordination of human walking. Part I: Introduction to concepts, power transfer, dynamics and simulations, Gait Posture, 16, pp. 215-232, (2002); Geraci M., Overuse injuries of the hip and pelvis, Journal of Back and Musculoskeletal Rehabilitation, 6, pp. 5-19, (1996); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and non-preferred leg, J Sports Sci, 20, pp. 293-299, (2002); Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, J Sports Sci, 24, pp. 951-960, (2006); Keilis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Med Sci Sport Exer, 36, pp. 1017-1028, (2004); Egan C., Verheul M., Savelsbergh G., Effects of experience on the coordination of internally and externally timed soccer kicks, J Motor Behav, 39, pp. 423-432, (2007)","R. Langhout; Physiotherapy Institute Dukenburg, Nijmegen, Aldenhof 7003, 6537 DZ, Netherlands; email: noor.rob@gmail.com","","Edizioni Minerva Medica","00224707","","JMPFA","27028720","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-85015008974" "Kelm J.; Ludwig O.; Schneider G.; Hopp S.","Kelm, J. (7006747095); Ludwig, O. (23967098400); Schneider, G. (57205684954); Hopp, S. (14015800100)","7006747095; 23967098400; 57205684954; 14015800100","Injury of the Obturator Internus Muscle - A Rare Differential Diagnosis in a Soccer Player; [Verletzung des M. obturatorius internus - eine seltene Differenzialdiagnose beim Fußballspieler]","2016","Sportverletzung-Sportschaden","30","1","","50","53","3","5","10.1055/s-0042-100959","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961933706&doi=10.1055%2fs-0042-100959&partnerID=40&md5=8c9a69d9cc87e64930c0b366bce32b33","Chirurgisch-Orthopädisches Zentrum Illingen, Rathausstraβe 2, Illingen/Saar, 66557, Germany; Sportwissenschaftliches Institut, Universität des Saarlandes, Saarbrücken, Germany; Klinik für Diagnostische und Interventionelle Radiologie, Universitätsklinikum des Saarlandes, Homburg/Saar, Germany; Klinik für Unfall-Hand- und Wiederherstellungschirurgie, Universitätsklinikum des Saarlandes, Homburg/Saar, Germany","Kelm J., Chirurgisch-Orthopädisches Zentrum Illingen, Rathausstraβe 2, Illingen/Saar, 66557, Germany; Ludwig O., Sportwissenschaftliches Institut, Universität des Saarlandes, Saarbrücken, Germany; Schneider G., Klinik für Diagnostische und Interventionelle Radiologie, Universitätsklinikum des Saarlandes, Homburg/Saar, Germany; Hopp S., Klinik für Unfall-Hand- und Wiederherstellungschirurgie, Universitätsklinikum des Saarlandes, Homburg/Saar, Germany","Background: Lesions/irritations of the obturator internus muscle (OIM) are rare, several differential diagnoses are possible. Patient: This paper describes the case of an OIM injury in a professional football player. Results: On clinical examination, painful internal rotation of the hip joint was an indication for a lesion/irritation of the OIM. MRI was the procedure of choice for imaging. Movement analysis served to detect a functional malposition. Conclusion: A short recovery time requires functional treatment as well as the use of orthopaedic aids to correct possible deformities. © Georg Thieme Verlag KG Stuttgart New York.","biomechanics; injury; obturator internus muscle; overuse injury; pathomechanics","Adult; Athletic Injuries; Diagnosis, Differential; Hip Injuries; Humans; Muscle, Skeletal; Pelvis; Rare Diseases; Soccer; adult; Athletic Injuries; case report; differential diagnosis; Hip Injuries; human; injuries; pelvis; rare disease; skeletal muscle; soccer","Busfield B.T., Romero D.M., Obturator internus strain in the hip of an adolescent athlete, Am J Orthop, 38, pp. 588-589, (2009); Velleman M.D., Jansen Van Rensburg A., Janse Van Rensburg D.C., Et al., Acute obturator internus muscle strain in a rugby player - A Case study, J Sports Med Phys Fitness, (2014); Vaarbakken K., Steen H., Samuelsen G., Et al., Lengths of the external hip rotators in mobilized cadavers indicate the quadriceps coxa as a primary abductor and extensor of the flexed hip, Clin Biomech, 29, pp. 794-802, (2014); Perez-Bellmunt A., Miguel-Perez M., Brugue M.B., Et al., An Anatomical and Histological Study of the Structures Surrounding the Proximal Attachment of the Hamstring Muscles, 21, (2014); Bucknor M.D., Steinbach L.S., Saloner D., Et al., Magnetic resonance neurography evaluation of chronic extraspinal sciatica after remote proximal hamstring injury: A preliminary retrospective analysis, J Neurosurg, 121, pp. 408-414, (2014); Ohishi T., Ito T., Suzuki D., Et al., Occult hip and pelvic fractures and accompanying muscle injuries around the hip, Arch Orthop Trauma Surg, 132, pp. 105-112, (2012); Retchford T.H., Crossley K.M., Grimaldi A., Et al., Can local muscles augment stability in the hip? A narrative literature review, J Musculoskelet Neuronal Interact, 13, pp. 1-12, (2013); Estors Sastre B., Gomez Palacio V.E., Fernandez Atuan R.L., Et al., Internus obturator muscle abscess: Presentation of 2 cases, An Pediatr (Barc), (2014); Amari R., Yokoi H., Pyomyositis of the obturator internus muscle extending to septic arthritis of the hip in a child: A case report, J Pediatr Orthop B, 23, pp. 55-58, (2014); Gibelin A., Contou D., Labbe V., Et al., Acute respiratory distress syndrome in a young soccer player: Search obturator internus primary pyomyositis. A reverse Lemierre syndrome, Am J Emerg Med, (2014); Singh R., Bony spurs projecting in the obturator foramen, Folia Morphol (Warsz), 71, pp. 125-127, (2012); Rohde R.S., Ziran B.H., Obturator internus tendinitis as a source of chronic hip pain, Orthopedics, 26, pp. 425-426, (2003); Insola A., Granata G., Padua L., Alcock canal syndrome due to obturator internus muscle fibrosis, Muscle Nerve, 42, pp. 431-432, (2010); Waldeyer A., Mayet A., Anatomie des Menschen. Erster Teil, 14. Neubearbeitete Auflage, 280, (1980); Platzer W., Taschenatlas der Anatomie Band 1, 9. Überarbeitete Auflage, 238, (2005); Hodges P.W., McLean L., Hodder J., Insight into the function of the obturator internus muscle in humans: Observations with development and validation of an electromyography recording technique, J Electromyogr Kinesiol, 24, pp. 489-496, (2014); Buldt A.K., Murley G.S., Butterworth P., Et al., The relationship between foot posture and lower limb kinematics during walking: A systematic review, Gait and Posture, 38, pp. 363-372, (2013); Tateuchi H., Wada O., Ichihashi N., Effects of calcaneal eversion on three-dimensional kinematics of the hip, pelvis and thorax in unilateral weight bearing, Hum Mov Sci, 30, pp. 566-573, (2011)","J. Kelm; Chirurgisch-Orthopädisches Zentrum Illingen, Illingen/Saar, Rathausstraβe 2, 66557, Germany; email: jk66421@hotmail.de","","Georg Thieme Verlag","09320555","","","27002708","German","Sportverletzung-Sportschaden","Article","Final","","Scopus","2-s2.0-84961933706" "Alanazi A.; Mitchell K.; Roddey T.; Alenazi A.; Alzhrani M.; Ortiz A.","Alanazi, Ahmad (57218652732); Mitchell, Katy (56372727200); Roddey, Toni (6602741290); Alenazi, Aqeel (56345932000); Alzhrani, Msaad (57194049552); Ortiz, Alexis (8297848700)","57218652732; 56372727200; 6602741290; 56345932000; 57194049552; 8297848700","Landing Evaluation in Soccer Players with or without Anterior Cruciate Ligament Reconstruction","2020","International Journal of Sports Medicine","41","13","","962","971","9","5","10.1055/a-1171-1900","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85093975354&doi=10.1055%2fa-1171-1900&partnerID=40&md5=1b524f27ed309bc5a1883abeb4df98be","Department of Physical Therapy, College of Applied Medical Sciences, Majmaah University, Al Majma'ah, Saudi Arabia; Physical Therapy, Texas Woman's University, Institute of Health Sciences- Houston Center, Houston, United States; Physical Therapy, Prince Sattam Bin Abdulaziz University College of Applied Medical Sciences, Al-Kharj, Saudi Arabia; Physical Therapy, University of the Incarnate Word School of Physical Therapy, San Antonio, United States","Alanazi A., Department of Physical Therapy, College of Applied Medical Sciences, Majmaah University, Al Majma'ah, Saudi Arabia; Mitchell K., Physical Therapy, Texas Woman's University, Institute of Health Sciences- Houston Center, Houston, United States; Roddey T., Physical Therapy, Texas Woman's University, Institute of Health Sciences- Houston Center, Houston, United States; Alenazi A., Physical Therapy, Prince Sattam Bin Abdulaziz University College of Applied Medical Sciences, Al-Kharj, Saudi Arabia; Alzhrani M., Department of Physical Therapy, College of Applied Medical Sciences, Majmaah University, Al Majma'ah, Saudi Arabia; Ortiz A., Physical Therapy, University of the Incarnate Word School of Physical Therapy, San Antonio, United States","The purpose of this study was to evaluate landing biomechanics in soccer players following ACLR during two landing tasks. Eighteen soccer players with an ACLR and 18 sex-matched healthy control soccer players participated in the study. Planned landing included jumping forward and landing on the force-plates, whereas unplanned landing included jumping forward to head a soccer ball and landing on the force-plates. A significant landing×group interaction was found only for knee flexion angles (p=0.002). Follow-up comparisons showed that the ACL group landed with greater knee flexion during planned landing compared with unplanned landing (p<0.001). Significant main effects of landing were found. The unplanned landing showed reduction in hip flexion (p<0.001), hip extension moments (p<0.013), knee extension moments (p<0.001), and peak pressure (p<0.001). A significant main effect for group for gastrocnemius muscle was found showing that the ACL group landed with reduced gastrocnemius activity (p=0.002). Unplanned landing showed greater injury predisposing factors compared with planned landing. The ACL group showed nearly similar landing biomechanics to the control group during both landing tasks. However, the ACL group used a protective landing strategy by reducing gastrocnemius activity. © 2021 American Society of Civil Engineers (ASCE). All rights reserved.","ACL reconstruction; landing; soccer","Adult; Anterior Cruciate Ligament Injuries; Anterior Cruciate Ligament Reconstruction; Biomechanical Phenomena; Electromyography; Female; Hip; Humans; Knee; Male; Muscle, Skeletal; Plyometric Exercise; Risk Factors; Soccer; Time and Motion Studies; Young Adult; adult; anterior cruciate ligament injury; anterior cruciate ligament reconstruction; biomechanics; electromyography; female; hip; human; knee; male; pathophysiology; physiology; plyometrics; risk factor; skeletal muscle; soccer; task performance; young adult","Yu B., Garrett W.E., Mechanisms of non-contact ACL injuries, Br J Sports Med, 41, pp. i47-i51, (2007); Childs S.G., Pathogenesis of anterior cruciate ligament injury, Orthop Nurs, 21, pp. 35-40, (2002); Prodromos C.C., Han Y., Rogowski J., Et al., A meta-analysis of the incidence of anterior cruciate ligament tears as a function of gender, sport, and a knee injury-reduction regimen, Arthroscopy, 23, pp. 1320-1325, (2007); Lohmander L.S., Englund P.M., Dahl L.L., Et al., The long-term consequence of anterior cruciate ligament and meniscus injuries: Osteoarthritis, Am J Sports Med, 35, pp. 1756-1769, (2007); Griffin L.Y., Agel J., Albohm M.J., Et al., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, J Am Acad Orthop Surg, 8, pp. 141-150, (2000); Viola R.W., Steadman J.R., Mair S.D., Et al., Anterior cruciate ligament injury incidence among male and female professional alpine skiers, Am J Sports Med, 27, pp. 792-795, (1999); Arendt E., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. 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Bressel E., Cronin J., The Landing Phase of a Jump Strategies to Minimize Injuries, Journal of Physical Education, Recreation & Dance, 76, pp. 30-35, (2005); Levangie P.K., Norkin C.C., Joint Structure and Function: A Comprehensive Analysis Fifth Edition. 5th Edition; Butler R.J., Willson J.D., Fowler D., Et al., Gender differences in landing mechanics vary depending on the type of landing, Clin J Sport Med, 23, pp. 52-57, (2013); Papadonikolakis A., Cooper L., Stergiou N., Et al., Compensatory mechanisms in anterior cruciate ligament deficiency, Knee Surg Sports Traumatol Arthrosc, 11, pp. 235-243, (2003); Morgan K.D., Donnelly C.J., Reinbolt J.A., Elevated gastrocnemius forces compensate for decreased hamstrings forces during the weight-acceptance phase of single-leg jump landing: Implications for anterior cruciate ligament injury risk, J Biomech, 47, pp. 3295-3302, (2014); Adouni M., Shirazi-Adl A., Marouane H., Role of gastrocnemius activation in knee joint biomechanics: Gastrocnemius acts as an ACL antagonist, Comput Methods Biomech Biomed Engin, 19, pp. 376-385, (2016); 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Malfait B., Dingenen B., Smeets A., Et al., Knee and hip joint kinematics predict quadriceps and hamstrings neuromuscular activation patterns in drop jump landings, PLoS One, 11, (2016); Moore K.L., Dalley A.F., Agur A.M.R., Clinically Oriented Anatomy; Myer G.D., Ford K.R., Brent J.L., Et al., The effects of plyometric vs. dynamic stabilization and balance training on power, balance, and landing force in female athletes, J Strength Cond Res, 20, pp. 345-353, (2006); Clarke S.B., Kenny I.C., Harrison A.J., Dynamic knee joint mechanics after anterior cruciate ligament reconstruction, Med Sci Sports Exerc, 47, pp. 120-127, (2015); Hewett T.E., Torg J.S., Boden B.P., Video analysis of trunk and knee motion during non-contact anterior cruciate ligament injury in female athletes: Lateral trunk and knee abduction motion are combined components of the injury mechanism, Br J Sports Med, 43, pp. 417-422, (2009); Zazulak B.T., Hewett T.E., Reeves N.P., Et al., Deficits in neuromuscular control of the trunk predict knee injury risk: A prospective biomechanical-epidemiologic study, Am J Sports Med, 35, pp. 1123-1130, (2007); Zazulak B.T., Hewett T.E., Reeves N.P., Et al., The effects of core proprioception on knee injury: A prospective biomechanical-epidemiological study, Am J Sports Med, 35, pp. 368-373, (2007); Markolf K.L., Burchfield D.M., Shapiro M.M., Et al., Combined knee loading states that generate high anterior cruciate ligament forces, J Orthop Res, 13, pp. 930-935, (1995); Oeffinger D.J., Shapiro R., Nyland J., Et al., Delayed gastrocnemius muscle response to sudden perturbation in rehabilitated patients with anterior cruciate ligament reconstruction, Knee Surg Sports Traumatol Arthrosc, 9, pp. 19-27, (2001); Garcia-Pinillos F., Lago-Fuentes C., Latorre-Roman P.A., Et al., Jump-Rope Training: Improved 3-km time-trial performance in endurance runners via enhanced lower-limb reactivity and foot-arch stiffness, Int J Sports Physiol Perform, 12, pp. 1-7, (2020); Bangsbo J., Energy demands in competitive soccer, J Sports Sci, 12, pp. S5-S12, (1994); Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in FA premier league soccer, J Sports Sci Med, 6, pp. 63-70, (2007)","A. Alanazi; Department of Physical Therapy, Majmaah University, Al Majma'ah, 11952, Saudi Arabia; email: aalanazi@mu.edu.sa","","Georg Thieme Verlag","01724622","","IJSMD","32688412","English","Int. J. Sports Med.","Article","Final","","Scopus","2-s2.0-85093975354" "Lindblom H.; Hägglund M.; Sonesson S.","Lindblom, Hanna (54791269900); Hägglund, Martin (6602402288); Sonesson, Sofi (56736234300)","54791269900; 6602402288; 56736234300","Intra- and interrater reliability of subjective assessment of the drop vertical jump and tuck jump in youth athletes","2021","Physical Therapy in Sport","47","","","156","164","8","7","10.1016/j.ptsp.2020.11.031","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097439272&doi=10.1016%2fj.ptsp.2020.11.031&partnerID=40&md5=11ab147153eb37767bef06d0dc7d4f8e","Unit of Physiotherapy, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden; Sport Without Injury ProgrammE (SWIPE), Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden","Lindblom H., Unit of Physiotherapy, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden, Sport Without Injury ProgrammE (SWIPE), Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden; Hägglund M., Unit of Physiotherapy, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden, Sport Without Injury ProgrammE (SWIPE), Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden; Sonesson S., Unit of Physiotherapy, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden, Sport Without Injury ProgrammE (SWIPE), Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden","Objectives: To investigate intra- and interrater reliability of the subjective assessments of filmed DVJ and TJA in youth male and female soccer players and to compare subjective assessment of the DVJ with two-dimensional movement analysis. Design: Cross-sectional study. Participants: 115 soccer players (66 boys, 49 girls) mean age 14 ± 1 (range 13–16) years. Main outcome measures: Knee control during landing phase of DVJ was assessed using a 3-graded scoring scale. TJA was assessed according to ten criteria using a dichotomous grading scale. Subjective assessment of DVJ was compared with calculation of normalized knee separation distance (NKSD). Results: Intrarater reliability for DVJ was substantial to almost perfect (kappa 0.72 rater 1; 0.85 rater 2). Interrater reliability was substantial to almost perfect (kappa from 0.68 to 0.83). The TJA total score intrarater reliability was ICC 0.59 for rater 1 and 0.90 for rater 2. Interrater reliability ranged from ICC 0.51 to 0.60. There were between-group differences in mean NKSD during DVJ for players rated as 0, 1 and 2, but within-group variability was large. Conclusion: Assessment of DVJ and TJA in youth athletes was rater dependent. Players with subjectively assessed reduced or poor knee control had smaller normalized knee separation distance in DVJ. © 2020 The Authors","Adolescents; Anterior cruciate ligament injury; Jump-landing technique; Soccer; Test-retest reliability","Adolescent; Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Cross-Sectional Studies; Female; Humans; Knee; Male; Movement; Plyometric Exercise; Reproducibility of Results; Risk Factors; Self Report; Soccer; adolescent; adolescent health; Article; cross-sectional study; drop vertical jump; female; football; football player; human; human experiment; interrater reliability; intrarater reliability; jumping; male; neuromuscular function; outcome assessment; plyometrics; priority journal; scoring system; soccer; soccer player; test retest reliability; tuck jump; anterior cruciate ligament injury; biomechanics; knee; movement (physiology); pathophysiology; physiology; plyometrics; reproducibility; risk factor; self report","Donnelly C.J., Elliott B.C., Ackland T.R., Doyle T.L., Beiser T.F., Finch C.F., Lloyd D.G., An anterior cruciate ligament injury prevention framework: Incorporating the recent evidence, Research in Sports Medicine, 20, pp. 239-262, (2012); Dudley L.A., Smith C.A., Olson B.K., Chimera N.J., Schmitz B., Warren M., Interrater and intrarater reliability of the tuck jump assessment by Health professionals of varied educational backgrounds, The Journal of Sports Medicine, 2013, (2013); Fort-Vanmeerhaeghe A., Benet A., Mirada S., Montalvo A.M., Myer G.D., Sex and maturation differences in performance of functional jumping and landing deficits in youth athletes, Journal of Sport Rehabilitation, pp. 1-8, (2019); Fort-Vanmeerhaeghe A., Montalvo A.M., Lloyd R.S., Read P., Myer G.D., Intra- and inter-rater reliability of the modified tuck jump assessment, Journal of Sports Science and Medicine, 16, pp. 117-124, (2017); Fox A.S., Bonacci J., McLean S.G., Saunders N., Efficacy of ACL injury risk screening methods in identifying high-risk landing patterns during a sport-specific task, Scandinavian Journal of Medicine & Science in Sports, 27, pp. 525-534, (2017); Gisev N., Bell J.S., Chen T.F., Interrater agreement and interrater reliability: Key concepts, approaches, and applications, Research in Social and Administrative Pharmacy, 9, pp. 330-338, (2013); 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Kiapour A.M., Demetropoulos C.K., Kiapour A., Quatman C.E., Wordeman S.C., Goel V.K., Hewett T.E., Strain response of the anterior cruciate ligament to uniplanar and multiplanar loads during simulated landings: Implications for injury mechanism, The American Journal of Sports Medicine, 44, pp. 2087-2096, (2016); Koo T.K., Li M.Y., A guideline of selecting and reporting intraclass correlation coefficients for reliability research, Journal of Chiropractic Medicine, 15, pp. 155-163, (2016); Kottner J., Audige L., Brorson S., Donner A., Gajewski B.J., Hrobjartsson A., Streiner D.L., Guidelines for reporting reliability and agreement studies (GRRAS) were proposed, Journal of Clinical Epidemiology, 64, pp. 96-106, (2011); Landis J.R., Koch G.G., The measurement of observer agreement for categorical data, Biometrics, 33, pp. 159-174, (1977); Lininger M.R., Smith C.A., Chimera N.J., Hoog P., Warren M., Tuck jump assessment: An exploratory factor Analysis in a college age population, The Journal of Strength & Conditioning Research, 31, pp. 653-659, (2017); 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Quatman-Yates C.C., Quatman C.E., Meszaros A.J., Paterno M.V., Hewett T.E., A systematic review of sensorimotor function during adolescence: A developmental stage of increased motor awkwardness?, British Journal of Sports Medicine, 46, pp. 649-655, (2012); Read P.J., Oliver J.L., de Ste Croix M.B., Myer G.D., Lloyd R.S., Reliability of the tuck jump injury risk screening assessment in elite male youth soccer players, The Journal of Strength & Conditioning Research, 30, pp. 1510-1516, (2016); Schmitz R.J., Shultz S.J., Nguyen A.D., Dynamic valgus alignment and functional strength in males and females during maturation, Journal of Athletic Training, 44, pp. 26-32, (2009); Sim J., Wright C.C., The kappa statistic in reliability studies: Use, interpretation, and sample size requirements, Physical Therapy, 85, pp. 257-268, (2005); Stensrud S., Myklebust G., Kristianslund E., Bahr R., Krosshaug T., Correlation between two-dimensional video analysis and subjective assessment in evaluating knee control among elite female team handball players, British Journal of Sports Medicine, 45, pp. 589-595, (2011); Thompson-Kolesar J.A., Gatewood C.T., Tran A.A., Silder A., Shultz R., Delp S.L., Dragoo J.L., Age influences biomechanical changes after participation in an anterior cruciate ligament injury prevention program, The American Journal of Sports Medicine, 46, pp. 598-606, (2018); Toivo K., Kannus P., Kokko S., Alanko L., Heinonen O.J., Korpelainen R., Parkkari J., Musculoskeletal examination in young athletes and non-athletes: The Finnish Health promoting sports club (FHPSC) study, BMJ Open Sport and Exercise Medicine, 4, (2018); Walter S.D., Eliasziw M., Donner A., Sample size and optimal designs for reliability studies, Statistics in Medicine, 17, pp. 101-110, (1998); Zazulak B.T., Hewett T.E., Reeves N.P., Goldberg B., Cholewicki J., Deficits in neuromuscular control of the trunk predict knee injury risk: A prospective biomechanical-epidemiologic study, The American Journal of Sports Medicine, 35, pp. 1123-1130, (2007)","S. Sonesson; Unit of Physiotherapy, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Campus US, Entrance 78, Level 15, S-581 83, Sweden; email: sofi.sonesson@liu.se","","Churchill Livingstone","1466853X","","PTSHB","33285488","English","Phys. Ther. Sport","Article","Final","All Open Access; Green Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85097439272" "Shan G.; Zhang X.","Shan, Gongbing (7005942347); Zhang, Xiang (54381067000)","7005942347; 54381067000","Soccer Scoring Techniques—A Biomechanical Re-Conception of Time and Space for Innovations in Soccer Research and Coaching","2022","Bioengineering","9","8","333","","","","6","10.3390/bioengineering9080333","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85137349124&doi=10.3390%2fbioengineering9080333&partnerID=40&md5=c6ee1a5d65b211818ed74187ff4803d6","Biomechanics Lab, Faculty of Arts Science, University of Lethbridge, Lethbridge, T1K 3M4, AB, Canada; Department of Physical Education, Xinzhou Teachers’ University, Xinzhou, 034000, China","Shan G., Biomechanics Lab, Faculty of Arts Science, University of Lethbridge, Lethbridge, T1K 3M4, AB, Canada, Department of Physical Education, Xinzhou Teachers’ University, Xinzhou, 034000, China; Zhang X., Department of Physical Education, Xinzhou Teachers’ University, Xinzhou, 034000, China","Background: Scientifically, both temporal and spatial variables must be examined when developing programs for training various soccer scoring techniques (SSTs). Unfortunately, previous studies on soccer goals have overwhelmingly focused on the development of goal-scoring opportunities or game analysis in elite soccer, leaving the consideration of player-centered temporal-spatial aspects of SSTs mostly neglected. Consequently, there is a scientific gap in the current scoring-opportunity identification and a dearth of scientific concepts for developing SST training in elite soccer. Objectives: This study aims to bridge the gap by introducing effective/proprioceptive shooting volume and a temporal aspect linked to this volume. Method: the SSTs found in FIFA Puskás Award (132 nominated goals between 2009 and 2021) were quantified by using biomechanical modeling and anthropometry. Results: This study found that players’ effective/proprioceptive shooting volume could be sevenfold that of normal practice in current coaching. Conclusion: The overlooked SSTs in research and training practice are commonly airborne and/or acrobatic, which are perceived as high-risk and low-reward. Relying on athletes’ talent to improvise on these complex skills can hardly be considered a viable learning/training strategy. Future research should focus on developing player-centered temporal-spatial SST training to help demystify the effectiveness of proprioceptive shooting volume and increase scoring opportunities in soccer. © 2022 by the authors.","airborne; anthropometry; biomechanical modeling; proprioceptive shooting volume; scoring opportunity identification; zero possession shot","","265 Million Playing Football, (2007); Sawe B.E., The Most Popular Sports in the World, (2018); Current World Population, (2018); Zhang X., Shan G., Liu F., Yu Y., Jumping Side Volley in Soccer—A Biomechanical Preliminary Study on the Flying Kick and Its Coaching Know-How for Practitioners, Appl. 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Rev, 9, pp. 86-99, (2021); Average Number of Goals Scored per Game at the FIFA World Cup from 1930 to 2018, (2020); Benezet J.-M., Hasler H., Youth Football, (2017); FIFA Coaching Manual, (2017); Thommes F., Fußballtraining für jeden Tag: Die 365 besten Übungen; [+ 16 Seiten moderne Entwicklungstendenzen], (2012); Ballreich R., Baumann W., Grundlagen der Biomechanik des Sports (The Basics of Biomechanics in Sports), (1996); Liu Y., Kong J., Wang X., Shan G., Biomechanical analysis of Yang’s spear turning-stab technique in Chinese martial arts, Phys. Act. Rev, 8, pp. 16-22, (2020); Visentin P., Shan G., Wasiak E.B., Informing music teaching and learning using movement analysis technology, Int. J. Music Educ, 26, pp. 73-87, (2008); Yu D., Yu Y., Wilde B., Shan G., Biomechanical characteristics of the axe kick in Tae Kwon-Do, Arch. Budo, 8, pp. 213-218, (2012); Turner C., Visentin P., Oye D., Rathwell S., Shan G., Pursuing Artful Movement Science in Music Performance: Single Subject Motor Analysis With Two Elite Pianists, Percept. Motor Skills, 128, pp. 1252-1274, (2021); Wasik J., Shan G., Factors influencing the effectiveness of axe kick in taekwon-do, Arch. Budo, 10, pp. 29-34, (2014); Zhang Z., Li S., Wan B., Visentin P., Jiang Q., Dyck M., Li H., Shan G., The influence of X-factor (trunk rotation) and experience on the quality of the badminton forehand smash, J. Hum. Kinet, 53, pp. 9-22, (2016); FIFA Introduces New FIFA Puskás award to Honour the “Goal of the Year, (2009); Gusenbauer M., Haddaway N.R., Which academic search systems are suitable for systematic reviews or meta-analyses? Evaluating retrieval qualities of Google Scholar, PubMed, and 26 other resources, Res. Synth. 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Sport, 11, pp. 438-449, (2011); Armatas V., Yiannakos A., Analysis and evaluation of goals scored in 2006 World Cup, J. Sport Health Res, 2, pp. 119-128, (2010); Alsmith A.J., Longo M.R., Where exactly am I? Self-location judgements distribute between head and torso, Conscious. Cognit, 24, pp. 70-74, (2014); Aman J.E., Elangovan N., Yeh I.-L., Ekonczak J., The effectiveness of proprioceptive training for improving motor function: A systematic review, Front. Hum. Neurosci, 8, (2015); Sherrington C.S., On the proprioceptive system, especially in its reflex aspect, Brain, 29, pp. 467-482, (1907); Wong J.D., Kistemaker D.A., Chin A., Gribble P.L., Can proprioceptive training improve motor learning?, J. Neurophys, 108, pp. 3313-3321, (2012); Shan G., Influence of gender and experience on the maximal instep soccer kick, Eur. J. Sport Sci, 9, pp. 107-114, (2009); Shan G., Daniels D., Wang C., Wutzke C., Lemire G., Biomechanical analysis of maximal instep kick by female soccer players, J. Hum. Mov. Stud, 49, pp. 149-168, (2005); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomech, 4, pp. 59-72, (2005); Shan G., Yuan J., Hao W., Gu M., Zhang X., Regression equations for estimating the quality of maximal instep kick by males and females in soccer, Kinesiology, 44, pp. 139-147, (2012); Shan G., Bohn C., Anthropometrical data and coefficients of regression related to gender and race, Appl. Ergon, 34, pp. 327-337, (2003); Aragon L.F., Evaluation of four vertical jump tests: Methodology, reliability, validity, and accuracy, Meas. Phys. Educ. Exerc. Sci, 4, pp. 215-228, (2000); Shergold A., The Height of Perfection: Why Cristiano Ronaldo Can Jump Higher than Anyone Else, (2013); Blanksby B., Nicholson L., Elliott B., Swimming: Biomechanical analysis of the grab, track and handle swimming starts: An intervention study, Sports Biomech, 1, pp. 11-24, (2002); CRISTIANO RONALDO Great MAN. UNITED #UCL GOALS!, (2021); Zlatan Ibrahimović GOAL—FIFA Puskas Award 2013 WINNER, (2013); 2014_FIFA Puskas Award—All Nominees Goals, (2014)","G. Shan; Biomechanics Lab, Faculty of Arts Science, University of Lethbridge, Lethbridge, T1K 3M4, Canada; email: g.shan@uleth.ca","","MDPI","23065354","","","","English","Bioeng.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85137349124" "Muzaffar S.; Elfadel I.M.","Muzaffar, Shahzad (56938249200); Elfadel, Ibrahim M. (6701583862)","56938249200; 6701583862","Shoe-integrated, force sensor design for continuous body weight monitoring","2020","Sensors (Switzerland)","20","12","3339","1","22","21","5","10.3390/s20123339","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086476803&doi=10.3390%2fs20123339&partnerID=40&md5=fbdefa6b6c3d96754f53ae8c1777e3e6","Electrical Engineering and Computer Science, Khalifa University, Abu Dhabi, United Arab Emirates; Center for Cyber Physical Systems (C2PS), Khalifa University, Abu Dhabi, United Arab Emirates","Muzaffar S., Electrical Engineering and Computer Science, Khalifa University, Abu Dhabi, United Arab Emirates; Elfadel I.M., Electrical Engineering and Computer Science, Khalifa University, Abu Dhabi, United Arab Emirates, Center for Cyber Physical Systems (C2PS), Khalifa University, Abu Dhabi, United Arab Emirates","Traditional pedobarography methods use direct force sensor placement in the shoe insole to record pressure patterns. One problem with such methods is that they tap only a few points on the flat sole under the foot and, therefore, do not account for the total ground reaction force. As a result, body weight tends to be under-estimated. This disadvantage has made it more difficult for pedobarography to be used to monitor many diseases, especially when their symptoms include body weight changes. In this paper, the problem of pedobarographic body weight measurement is addressed using a novel ergonomic shoe-integrated sensor array architecture based on concentrating the applied force via three-layered structures that we call Sandwiched Sensor Force Consolidators (SSFC). A shoe prototype is designed with the proposed sensors and shown to accurately measure body weight with an achievable relative accuracy greater than 99%, even in the presence of motion. The achieved relative accuracy is at least 4X better than the existing state of the art. The SSFC shoe prototype is built using readily available soccer shoes and piezoresistive FlexiForce sensors. To improve the wearability and comfort of the instrumented shoe, a semi-computational sensor design methodology is developed based on an equivalent-area concept that can accurately account for SSFC’s with arbitrary shapes. The search space of the optimal SSFC design is shown to be combinatorial, and a high-performance computing (HPC) framework based on OpenMP parallel programming is proposed to accelerate the design optimization process. An optimal sensor design speedup of up to 22X is shown to be achievable using the HPC implementation. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.","Biomedical IoT; Continuous weight measurement; Flexible packaging; Force sensor design; Gait monitoring; Shoe-integrated sensing","Biomechanical Phenomena; Body Weight; Equipment Design; Foot; Gait; Humans; Pressure; Shoes; Wearable Electronic Devices; Anthropometry; Application programming interfaces (API); Biophysics; Parallel programming; Weighing; Computational sensors; Equivalent areas; Ground reaction forces; High performance computing (HPC); Integrated sensor arrays; Pressure patterns; Relative accuracy; Three-layered structures; biomechanics; body weight; electronic device; equipment design; foot; gait; human; pressure; shoe; Design","Self-Check Plan for Heart-Failure Management; Chaudhry S.I., Wang Y., Concato J., Gill T.M., Krumholz H., Patterns of Weight Change Preceding Hospitalization for Heart Failure, Circulation, 116, pp. 1549-1554, (2007); Zhang J., Goode K.M., Cuddihy P.E., Cleland J.G., Predicting hospitalization due to worsening heart failure using daily weight measurement: Analysis of the trans-European networkehome-care management system (ten-hms) study, Eur. J. Heart Fail., 11, pp. 420-427, (2009); Hegde N., Bries M., Sazonov E., A Comparative Review of Footwear-Based Wearable Systems, Electronics, 5, (2016); F-Scan, In-Shoe Pressure Measurement Technology; Castro M., Soares D., Machado L., Comparison of Vertical GRF Obtained from Force Plate, Pressure Plate and Insole Pressure System, Port. J. Sport. Sci., 11, pp. 849-852, (2011); Eng S., Al-Mai O., Ahmadi M., A 6 DoF, Wearable, Compliant Shoe Sensor for Total Ground Reaction Measurement, IEEE Trans. Instrum. Meas., 67, pp. 2714-2722, (2018); Jawale B., Korra L., Wearable Body Weight Estimation using FSR, Int. Res. J. Eng. Technol. (IRJET), 5, pp. 90-93, (2018); Hellstrom P., Folke M., Ekstrom M., Wearable Weight Estimation System, Procedia Comput. Sci., 64, pp. 146-152, (2015); Morris S.J., Paradiso J.A., Shoe-integrated sensor system for wireless gait analysis and real-time feedback, Proceedings of the Second Joint 24Th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society [Engineering in Medicine and Biology], pp. 2468-2469; Saadeh W., Altaf M.A.B., Butt S.A.A., Wearable Neuro-Degenerative Diseases Detection System Based on Gait Dynamics, Proceedings of the 25Th IFIP/IEEE International Conference on Very Large Scale Integration (Vlsi-Soc 2017), pp. 1-6; Thepudom T., Seesaard T., Donkrajang W., Kerdcharoen T., Healthcare Shoe System for Gait Monitoring and Foot Odor Detections, In Proceedings of the 2Nd IEEE Global Conference on Consumer Electronics (GCCE), pp. 81-82; Eguchi R., Yorozu A., Takahashi M., Accessible Ground Reaction Force Estimation Using Insole Force Sensors Without Force Plates, In Proceedings of the 11Th Asian Control Conference (ASCC), pp. 2861-2865; Malvade P.S., Joshi A.K., Madhe S.P., IoT Based Monitoring of Foot Pressure Using FSR Sensor, Proceedings of the International Conference on Communication and Signal Processing (ICCSP), pp. 635-639; Wu H., Zhou Z., Wang J., An H., Wei Q., Recognization of Stance Phase Using Flexible Pressure Sensors, In Proceedings of the 8Th International Conference on Intelligent Human-Machine Systems and Cybernetics (IHMSC), pp. 509-512; Eguchi R., Yorozu A., Takahashi M., Kinetic and Spatiotemporal Gait Analysis System Using Instrumented Insoles and Laser Range Sensor, Proceedings of the IEEE International Conference on Systems, Man, and Cybernetics (SMC), pp. 705-709, (2017); Aoike K., Nagamune K., Takayama K., Kuroda R., Kurosaka M., Gait Analysis of Normal Subjects by Using Force Sensor and Six Inertial Sensor With Wireless Module, Proceedings of the IEEE International Conference on Systems, Man, and Cybernetics (SMC), pp. 1257-1260; Ishida T., Development of a Small Biped Entertainment Robot QRIO, Proceedings of the 4Th Symposium on Micro-Nanomechatronics and Human Science, pp. 23-28, (2004); Delgado-Gonzalo R., Hubbard J., Renevey P., Lemkaddem A., Vellinga Q., Ashby D., Willardson J., Bertschi M., Real-time Gait Analysis With Accelerometer-based Smart Shoes, Proceedings of the 39Th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), (2017); McCoy S., Altra’s First ‘Smart Shoe’ Will Change the Way You Run; Sensoria Artificial Intelligence Sportswear; Digitsole Smartshoe, The World’s First Intelligent Sneaker; 3L Labs, Footlogger; Liu T., Inoue Y., Shibata K., A Small and Low-Cost 3-D Tactile Sensor for a Wearable Force Plate, IEEE Sens. J., 9, pp. 1103-1110, (2009); Kong K., Tomizuka M., A Gait Monitoring System Based on Air Pressure Sensors Embedded in a Shoe, IEEE/ASME Trans. Mechatronics, 14, pp. 358-370, (2009); Chinimilli P.T., Redkar S., Zhang W., Human Activity Recognition Using Inertial Measurement Units and Smart Shoes, In Proceedings of the American Control Conference, pp. 1462-1467, (2017); Al-Mai O., Ahmadi M., Albert J., A Compliant 3-Axis Fiber-Optic Force Sensor for Biomechanical Measurement, IEEE Sens. J., 17, pp. 1-9, (2017); Liu T., Inoue Y., Shibata K., A Wearable Ground Reaction Force Sensor System and Its Application to the Measurement of Extrinsic Gait Variability, Sensors, 10, pp. 10240-10255, (2010); Choi H., Lee C., Shim M., Han J., Baek Y., Design of an Artificial Neural Network Algorithm for a Low-Cost Insole Sensor to Estimate the Ground Reaction Force (GRF) and Calibrate the Center of Pressure (CoP), Sensors, 18, (2018); Park J., Na Y., Gu G., Kim J., Flexible Insole Ground Reaction Force Measurement Shoes for Jumping and Running, In Proceedings of the 6Th IEEE International Conference on Biomedical Robotics and Biomechatronics (Biorob), Singapore, 26–29 June, pp. 1062-1067, (2016); Rouhani H., Favre J., Crevoisier X., Aminian K., Ambulatory Assessment of 3D Ground Reaction Force Using Plantar Pressure Distribution, Gait Posture, 32, pp. 311-316, (2010); Rosquist P.G., Collins G., Merrell A.J., Tuttle N.J., Tracy J.B., Bird E.T., Seeley M.K., Fullwood D.T., Christensen W.F., Bowden A.E., Estimation of 3D Ground Reaction Force Using Nanocomposite Piezo-Responsive Foam Sensors During Walking, Ann. Biomed. Eng., 45, pp. 2122-2134, (2017); Muzaffar S., Elfadel I.M., Piezoresistive Sensor Array Design for Shoe-integrated Continuous Body Weight and Gait Measurement, Proceedings of the 20Th Symposium on Design, Test, Integration & Packaging of MEMS/MOEMS (DTIP 2019), 12-15, pp. 1-4, (2019); Muzaffar S., Elfadel I.M., Sensor Array for Consolidated Force Measurement; Lumen Learning, Elasticity: Stress and Strain; The Openmp API Specification for Parallel Programming; Singletact Miniature Force Sensors; Palmer H.B., Capacitance of a Parallel-plate Capacitor by the Schwartz-Christoffel Transformation, Trans. Am. Inst. Electr. Eng., 56, pp. 363-366, (1937); Baeuscher M., Wang B., Hu X., Mackowiak P., Merchau N., Ehrmann O., Schneider-Ramelow M., Lang K.-D., Ngo H.D., Simulation And Electrical Characterization Of A Novel 2D-Printed Incontinence Sensor With Conductive Polymer PEDOT:PSS For Medical Applications, Proceedings of the 2018 IEEE 20Th Electronics Packaging Technology Conference (EPTC), pp. 565-572, (2018); Rao K.S., Sailaja B.V.S., Sravani K.G., Vineetha K.V., Kumar P.A., Prathyusha D., Sai Lakshmi G., Gopi Chand C.H., Guha K., New Analytical Capacitance Modeling of the Perforated Switch Considering the Fringing Effect, IEEE Access, 7, pp. 27026-27036, (2019)","I.M. Elfadel; Electrical Engineering and Computer Science, Khalifa University, Abu Dhabi, United Arab Emirates; email: ibrahim.elfadel@ku.ac.ae; I.M. Elfadel; Center for Cyber Physical Systems (C2PS), Khalifa University, Abu Dhabi, United Arab Emirates; email: ibrahim.elfadel@ku.ac.ae","","MDPI AG","14248220","","","32545528","English","Sensors","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85086476803" "Fong D.T.P.; Leung W.-C.; Mok K.-M.; Yung P.S.H.","Fong, Daniel T. P. (8274063100); Leung, Wing-Ching (57218277616); Mok, Kam-Ming (37070831800); Yung, Patrick S. H. (55664067300)","8274063100; 57218277616; 37070831800; 55664067300","Delayed ankle muscle reaction time in female amateur footballers after the first 15 min of a simulated prolonged football protocol","2020","Journal of Experimental Orthopaedics","7","1","54","","","","7","10.1186/s40634-020-00275-1","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85088568015&doi=10.1186%2fs40634-020-00275-1&partnerID=40&md5=914864100571bb33acc837e3131bda38","National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom; Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong; Sports Medicine Centre, Elite Training Science & Technology Division, Hong Kong Sports Institute, Hong Kong; Student Services Centre, Lingnan University, Hong Kong","Fong D.T.P., National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom; Leung W.-C., Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, Sports Medicine Centre, Elite Training Science & Technology Division, Hong Kong Sports Institute, Hong Kong; Mok K.-M., Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, Student Services Centre, Lingnan University, Hong Kong; Yung P.S.H., Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong","Purpose: Ankle sprain injury rate is reported to be higher towards the end of a football match. Muscle fatigue may contribute to the delayed muscle reaction and subsequent injury. This study investigated the ankle muscle reaction time during a simulated, prolonged football protocol. Methods: Seven amateur female football players participated in a 105-min simulated, prolonged football protocol. An ankle muscle reaction test was conducted with a pair of ankle sprain simulators at a scheduled interval every 15-min. The reaction times of peroneus longus, tibialis anterior, and lateral gastrocnemius were collected using an electromyography system sampling at 1000 Hz. Repeated measures one-way multivariate analysis of variance with post-hoc paired t-tests were conducted to evaluate if the reaction time at each time point significantly differed from baseline. Statistical significance was set at p < 0.05 level. Results: Reaction times started from 40.5–47.7 ms at baseline and increased to 48.6–55.7 ms at the end. Reaction times significantly increased in all muscles after the first 15 min except for the dominant lateral gastrocnemius. Increased reaction times were seen in the non-dominant limb after 60 min for tibialis anterior, after 75 min for peroneus longus, and after 90 min for the lateral gastrocnemius. Conclusions: Delayed reaction time of the ankle muscles were found after the first 15 min and in the final 45 min of a simulated prolonged football protocol. Strategies for injury prevention should also focus on tackling the delayed ankle muscle reaction time in the acute phase (the first 15 min), in addition to the latter minutes in the second half. Level of evidence: Controlled laboratory study, Level V. © 2020, The Author(s).","Ankle injuries; Ankle sprain; Biomechanics; Ligamentous sprain; Soccer; Sports medicine; Syndesmotic injury","adult; ankle instability; ankle muscle reaction test; ankle sprain; Article; clinical article; electromyography; experimental behavioral test; female; femoral condyle; football player; gastrocnemius muscle; heart rate; human; motor reaction time; multivariate analysis; muscle contraction; muscle fatigue; muscle strength; muscle stretching; peroneus muscle; priority journal; tibialis anterior muscle","Griffin J., Larsen B., Horan S., Keogh J., Dodd K., Andreatta M., Mihahan C., Women’s football: An examination of factors that influence movement patterns, J Strength Cond Res, (2020); Engstrom B., Johansson C., Tornkvist H., Soccer injuries among elite female players, Am J Sports Med, 19, pp. 372-375, (1991); Alamad T.A., Kearney P., Cahalan R., Injury in elite women’s soccer: A systematic review, Phys Sportsmed, (2020); Mortvedt A.I., Krosshaug T., Bahr R., Petushek E., I spy with my little eye … a knee about to go ‘pop’? Can coaches and sports medicine professionals predict who is at greater risk of ACL rupture?, Br J Sports Med, 54, pp. 154-158, (2020); Prien A., Boudabous S., Junge A., Verhagen E., Delattre B.M.A., Tscholl P.M., Every second retired elite female football player has MRI evidence of knee osteoarthritis before age 50 years: a cross-sectional study of clinical and MRI outcomes, Knee Surg Sports Traumatol Arthrosc, 28, pp. 353-362, (2020); Soligard T., Grindem H., Bahr R., Andersen T.E., Are skilled players at greater risk of injury in female youth football?, Br J Sports Med, 44, pp. 1118-1123, (2010); Sarmento H., Clemente F.M., Marques A., Milanovic Z., Harper L.D., Figueiredo A., Recreational football is medicine against non-communicable diseases: a systematic review, Scand J Med Sci Sports, 30, pp. 618-637, (2020); Wright I.C., Neptune R.R., van den Bogart A.J., Nigg B.M., The influence of foot positioning on ankle sprains, J Biomech, 33, pp. 513-519, (2000); Reilly T., Drust B., Clarke N., Muscle fatigue during football match-play, Sports Med, 38, pp. 357-367, (2008); Hoch M.C., McKeon P.O., Peroneal reaction time after ankle sprain: a systematic review and meta-analysis, Med Sci Sports Exerc, 46, pp. 546-556, (2014); Doherty C., Delahunt E., Caulfield B., Hertel J., Ryan J., Bleakley C., The incidence and prevalence of ankle sprain injury: a systematic review and meta-analysis of prospective epidemiological studies, Sports Med, 44, pp. 123-140, (2014); Fong D.T.P., Hong Y., Chan L.K., Yung P.W.H., Chan K.M., A systematic review on ankle injury and ankle sprain in sports, Sports Med, 37, pp. 73-94, (2007); Del Coso J., Herrero H., Salinero J.J., Injuries in Spanish female soccer players, J Sport Health Sci, 7, pp. 183-190, (2018); Larruskain J., Lekue J.A., Diaz N., Odriozola A., Gil S.M., A comparison of injuries in elite male and female football players: a five-season prospective study, Scand J Med Sci Sports, 28, pp. 237-245, (2018); Gaulrapp H., Becker A., Walther M., Hess H., Injuries in women’s soccer: a 1-year all players prospective field study of the women’s Bundesliga (German premier league), Clin J Sport Med, 20, pp. 264-271, (2010); Fong D.T.P., Hong Y., Shima Y., Krosshaug T., Yung P.S.H., Chan K.M., Biomechanics of supination ankle sprain: a case report of an accidental injury event in the laboratory, Am J Sports Med, 37, pp. 822-827, (2009); Mok K.M., Fong D.T.P., Krosshaug T., Engebretsen L., Hung A.S.L., Yung P.S.H., Chan K.M., Kinematics analysis of ankle inversion ligamentous sprain injuries in sports: 2 cases during the 2008 Beijing Olympics, Am J Sports Med, 39, pp. 1548-1552, (2011); Delahunt E., Monaghan K., Caufield B., Ankle function during hopping in subjects with functional instability of the ankle joint, Scand J Med Sci Sports, 17, pp. 641-648, (2007); Patel N.K., Murphy C.I., Pfeiffer T.R., Naendrup J.H., Zlotnicki J.P., Debski R.E., Hogan M.V., Musahl V., Sagittal instability with inversion is important to evaluate after syndesmosis injury and repair: a cadaveric robotic study, J Exp Orthop, 7, (2020); de Noronha M., Lay E.K., McPhee M.R., Mnatzaganian G., Nunes G.S., Ankle sprain has higher occurrence during the latter parts of matches: systematic review with meta-analysis, J Sport Rehabil, 28, pp. 373-380, (2019); Behan F.P., Willis S., Pain M.T.G., Folland J.P., Effects of football simulated fatigue on neuromuscular function and whole-body response to disturbances in balance, Scand J Med Sci Sports, 28, pp. 2547-2557, (2018); Gribble P.A., Hertal J., Denegar C.R., Chronic ankle instability and fatigue create proximal joint alterations during performance of the star excursion balance test, Int J Sports Med, 28, pp. 236-242, (2007); Jackson N.D., Gutierrez G.M., Kaminski T., The effect of fatigue and habituation on the stretch reflex of the ankle musculature, J Electromyogr Kinesiol, 19, pp. 75-84, (2009); Rahnama N., Lees A., Reilly T., Electromyography of selected lower-limb muscles fatigued by exercise at the intensity of soccer match-play, J Electromyogr Kinesiol, 16, pp. 257-263, (2006); Karlsson J., Andreasson G.O., The effect of external ankle support in chronic lateral ankle joint instability: an electromyographic study, Am J Sports Med, 20, pp. 257-261, (1992); Nicholas C.W., Nuttall F.E., Williams C., The Loughborough intermittent shuttle test: a field test that simulates the activity pattern of soccer, J Sports Sci, 18, pp. 97-104, (2000); Chan Y.Y., Fong D.T.P., Yung P.S.H., Fung K.Y., Chan K.M., A mechanical supination sprain simulator for studying ankle supination sprain kinematics, J Biomech, 41, pp. 2571-2574, (2008); Perotto A.O., Anatomical guide for the electromyographer: the limb and trunk, pp. 175-192, (2005); Della Villa F., Buckthorpe M., Grassi A., Nabiuzzi A., Tosarelli F., Zaffagnini S., Della Villa S., Systematic video analysis of ACL injuries in professional male football (soccer): injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, Br J Sports Med, (2020); Almonroeder T.G., Tighe S.M., Miller T.M., Lanning C.R., The influence of fatigue on decision-making in athletes: a systematic review, Sports Biomech, 19, pp. 76-89, (2020); Valldecabres R., Richards J., De Benito A.M., The effect of match fatigue in elite badminton players using plantar pressure measurements and the implications to injury mechanisms, Sports Biomech, (2020); Konradsen L., Ravn J.B., Prolonged peroneal reaction time in ankle instability, Int J Sports Med, 12, pp. 290-292, (1991); Greig M., Walker-Johnson C., The influence of soccer-specific fatigue on functional stability, Phys Ther Sport, 8, pp. 185-190, (2007); Lohkamp M., Craven S., Walker-Johnson C., Greig M., The influence of ankle taping on changes in postural stability during soccer-specific activity, J Sport Rehabil, 18, pp. 482-492, (2009); Millet G.Y., Lepers R., Alterations of neuromuscular function after prolonged running, cycling and skiing exercises, Sports Med, 34, pp. 105-116, (2004); Petisco C., Ramirez-Campillo R., Hernandez D., Gonzalo-Skok O., Nakamura F.Y., Sanchez-Sanchez J., Post-activation potentiation: effects of different conditioning intensities on measures of physical fitness in male young professional soccer players, Front Psychol, 10, (2019); De Luca C.J., Sabbahi M.A., Roy S.H., Median frequency of the myoelectric signal: effects of hand dominance, Eur J Appl Physiol, 55, pp. 457-464, (1986); Farina D., Kallenberg L.A., Merletti R., Hermens H.J., Effect of side dominance on myoelectric manifestations of muscle fatigue in the human upper trapezius muscle, Eur J Appl Physiol, 90, pp. 480-488, (2003); Linford C.W., Hopkins J.T., Schulthies S.S., Freland B., Draper D.O., Hunter I., Effects of neuromuscular training on the reaction time and electromechanical delay of the peroneus longus muscle, Arch Phys Med Rehabil, 87, pp. 395-401, (2006); Eils E., Rosenbaum D., A multi-station proprioceptive exercise program in patients with ankle instability, Med Sci Sports Exerc, 33, pp. 1991-1998, (2001); Hertel J., Functional instability following lateral ankle sprain, Sports Med, 29, pp. 361-371, (2000); Verhagen E., van der Beek A., Twisk J., Bouter L., van Mechelen W., The effect of a proprioceptive balance board training program for the prevention of ankle sprains: a prospective controlled trial, Am J Sports Med, 32, pp. 1385-1393, (2004); Sheth P., Yu B., Laskowski E.R., An K.N., Ankle disk training influences reaction times of selected muscles in a simulated ankle sprain, Am J Sports Med, 25, pp. 538-543, (1997); Delvaux F., Schwartz C., Rodriguez C., Forthomme B., Kaux J.F., Croisier J.L., Preseason assessment of anaerobic performance in elite soccer players: Comparison of isokinetic and functional test, Sports Biomech, (2020)","P.S.H. Yung; Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong; email: patrickyung@cuhk.edu.hk","","Springer","21971153","","","","English","J. Exp. Orthop.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85088568015" "McGovern A.; Dude C.; Munkley D.; Martin T.; Wallace D.; Feinn R.; Dione D.; Garbalosa J.C.","McGovern, Andrew (56667235200); Dude, Christopher (56667500900); Munkley, Daniel (56667586400); Martin, Thomas (56562291200); Wallace, David (56666697700); Feinn, Richard (6602797347); Dione, Donald (6603622762); Garbalosa, Juan C. (8504249800)","56667235200; 56667500900; 56667586400; 56562291200; 56666697700; 6602797347; 6603622762; 8504249800","Lower limb kinematics of male and female soccer players during a self-selected cutting maneuver: Effects of prolonged activity","2015","Knee","22","6","","510","516","6","7","10.1016/j.knee.2015.05.005","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930357500&doi=10.1016%2fj.knee.2015.05.005&partnerID=40&md5=d54cf855c9d5433adf29ad47b9d6c6b2","Physical Therapy Department, Quinnipiac University, 275 Mount Carmel Ave, Hamden, CT, United States; Department of Biomedical Sciences, Quinnipiac University, 275 Mount Carmel Ave, Hamden, CT, United States; Frank H Netter, MD, School of Medicine, Quinnipiac University, 275 Mount Carmel Ave, Hamden, CT, United States; Yale University, School of Medicine, New Haven, CT, United States; Motion Analysis Laboratory, Quinnipiac University, 275 Mount Carmel Ave, Hamden, CT, United States; Physical Therapy Department, Quinnipiac University, 275 Mount Carmel Ave, Hamden, CT, United States","McGovern A., Physical Therapy Department, Quinnipiac University, 275 Mount Carmel Ave, Hamden, CT, United States; Dude C., Physical Therapy Department, Quinnipiac University, 275 Mount Carmel Ave, Hamden, CT, United States; Munkley D., Physical Therapy Department, Quinnipiac University, 275 Mount Carmel Ave, Hamden, CT, United States; Martin T., Department of Biomedical Sciences, Quinnipiac University, 275 Mount Carmel Ave, Hamden, CT, United States; Wallace D., Physical Therapy Department, Quinnipiac University, 275 Mount Carmel Ave, Hamden, CT, United States; Feinn R., Frank H Netter, MD, School of Medicine, Quinnipiac University, 275 Mount Carmel Ave, Hamden, CT, United States; Dione D., Yale University, School of Medicine, New Haven, CT, United States; Garbalosa J.C., Physical Therapy Department, Quinnipiac University, 275 Mount Carmel Ave, Hamden, CT, United States, Motion Analysis Laboratory, Quinnipiac University, 275 Mount Carmel Ave, Hamden, CT, United States, Physical Therapy Department, Quinnipiac University, 275 Mount Carmel Ave, Hamden, CT, United States","Background: Despite the recent emphasis on injury prevention, anterior cruciate ligament (ACL) injury rates remain high. This study aimed to ascertain the effects of prolonged activity on lower limb kinematics during a self-selected cutting maneuver. Methods: Angular kinematics were recorded during an agility test performed until the completion time was greater than the mean plus one SD of baseline trials. Cut type was identified and the hip and knee angles at 33 ms post heel strike were determined. A linear mixed effects model assessed the effects of cut type, gender, and activity status on the hip and knee angles. Results: Males performed sidestep cuts more frequently than females. Females increased the incidence of sidestep cuts after prolonged activity. At the hip, a gender-cut type interaction existed for the transverse (p = 0.001) and sagittal (p = 0.11) planes. Females showed more internal rotation during sidestep and more external rotation and less flexion during crossover cuts. For the frontal plane, a gender-activity status interaction (p = 0.032) was due to no change within females but greater hip adduction during prolonged activity within males. With prolonged activity, both genders displayed less hip (p = 0.29) and knee (p = 0.009) flexion and more knee (p = 0.001) adduction. Females displayed less hip and knee flexion than men (p = 0.001). Conclusions: Sidestep may be more risky than crossover cuts. Both genders place themselves in at-risk postures with prolonged activity due to less hip and knee flexion. Level of evidence: Level 4. © 2015 Elsevier B.V.","ACL; Cutting; Kinematics; Knee","Adolescent; Exercise; Female; Hip Joint; Humans; Knee Injuries; Knee Joint; Lower Extremity; Male; Motor Activity; Range of Motion, Articular; Resistance Training; Soccer; Time Factors; Young Adult; adult; age distribution; agility; Article; biomechanics; body height; body weight; female; human; human experiment; joint function; lower limb; male; musculoskeletal function; musculoskeletal system parameters; normal human; priority journal; range of motion; sex difference; soccer player; adolescent; exercise; hip; joint characteristics and functions; knee; Knee Injuries; lower limb; motor activity; physiology; procedures; resistance training; soccer; time factor; young adult","Hewett T.E., Ford K.R., Hoogenboom B.J., Myer G.D., Understanding and preventing ACL injuries: current biomechanical and epidemiologic considerations - update 2010, N Am J Sports Phys Ther, 5, pp. 234-251, (2010); Arendt E.A., Dick R., Knee injury patterns among men and women in collegiate basketball and soccer. NCAA data and review of literature, Am J Sports Med, 23, pp. 694-701, (1995); Bendjaballah M.Z., Shirazi-Adl A., Zukor D.J., Finite element analysis of human knee joint in varus-valgus, Clin Biomech, 12, pp. 139-148, (1997); Melnyk M., Gollhofer A., Submaximal fatigue of the hamstrings impairs specific reflex components and knee stability, Knee Surg Sports Traumatol Arthrosc, 15, pp. 525-532, (2007); Shin C.S., Chaudhari A.M., Andriacchi T.P., Valgus plus internal rotation moments increase anterior cruciate ligament strain more than either alone, Med Sci Sports Exerc, 43, pp. 1484-1491, (2011); Mather R.C., Koenig L., Kocher M.S., Dall T.M., Gallo P., Scott D.J., Et al., Societal and economic impact of anterior cruciate ligament tears, J Bone Joint Surg Am, 95, pp. 1751-1759, (2013); Cholewicki J., Silfies S.P., Shah R.A., Greene H.S., Reeves N.P., Alvi K., Et al., Delayed trunk muscle reflex responses increase the risk of low back injuries, Spine, 30, pp. 2614-2620, (2005); Cholewicki J., VanVliet J., Relative contribution of trunk muscles to the stability of the lumbar spine during isometric exertions, Clin Biomech, 17, pp. 99-105, (2002); Thomas A.C., McLean S.G., Palmieri-Smith R.M., Quadriceps and hamstrings fatigue alters hip and knee mechanics, J Appl Biomech, 26, pp. 159-170, (2010); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Cochrane J.L., Lloyd D.G., Buttfield A., Seward H., McGivern J., Characteristics of anterior cruciate ligament injuries in Australian football, J Sci Med Sport, 10, pp. 96-104, (2007); Ireland M.L., The female ACL: why is it more prone to injury?, Orthopedic Cinics of North America, 33, (2002); Krosshaug T., Nakamae A., Boden B.P., Engebretsen L., Smith G., Slauterbeck J.R., Et al., Mechanisms of anterior cruciate ligament injury in basketball: video analysis of 39 cases, Am J Sports Med, 35, pp. 359-367, (2007); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: a systematic video analysis, Am J Sports Med, 32, pp. 1002-1012, (2004); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech, 16, pp. 438-445, (2001); Landry S.C., McKean K.A., Hubley-Kozey C.L., Stanish W.D., Deluzio K.J., Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated run and crosscut maneuver, Am J Sports Med, 35, pp. 1901-1911, (2007); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1168-1175, (2001); Hawkins R.D., Hulse M.A., Wilkinson C., Hodson A., Gibson M., The association football medical research programme: an audit of injuries in professional football, Br J Sports Med, 35, pp. 43-47, (2001); Ostenberg A., Roos H., Injury risk factors in female European football. A prospective study of 123 players during one season, Scand J Med Sci Sports, 10, pp. 279-285, (2000); McLean S.G., Fellin R.E., Suedekum N., Calabrese G., Passerallo A., Joy S., Impact of fatigue on gender-based high-risk landing strategies, Med Sci Sports Exerc, 39, pp. 502-514, (2007); Rozzi S.L., Lephart S.M., Fu F.H., Effects of muscular fatigue on knee joint laxity and neuromuscular characteristics of male and female athletes, J Athl Train, 34, pp. 106-114, (1999); Chappell J.D., Herman D.C., Knight B.S., Kirkendall D.T., Garrett W.E., Yu B., Effect of fatigue on knee kinetics and kinematics in stop-jump tasks, Am J Sports Med, 33, pp. 1022-1029, (2005); Fagenbaum R., Darling W.G., Jump landing strategies in male and female college athletes and the implications of such strategies for anterior cruciate ligament injury, Am J Sports Med, 31, pp. 233-240, (2003); Nyland J.A., Shapiro R., Caborn D.N., Nitz A.J., Malone T.R., The effect of quadriceps femoris, hamstring, and placebo eccentric fatigue on knee and ankle dynamics during crossover cutting, J Orthop Sports Phys Ther, 25, pp. 171-184, (1997); Manal K., McClay I., Stanhope S., Richards J., Galinat B., Comparison of surface mounted markers and attachment methods in estimating tibial rotations during walking: an in vivo study, Gait Posture, 11, pp. 38-45, (2000); Koga H., Nakamae A., Shima Y., Iwasa J., Myklebust G., Engebretsen L., Et al., Mechanisms for noncontact anterior cruciate ligament injuries: knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, pp. 2218-2225, (2010); McLean S.G., Lipfert S.W., van den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, pp. 1008-1016, (2004); Utturkar G.M., Irribarra L.A., Taylor K.A., Spritzer C.E., Taylor D.C., Garrett W.E., Et al., The effects of a valgus collapse knee position on in vivo ACL elongation, Ann Biomed Eng, 41, pp. 123-130, (2013); Fauno P., Wulff J.B., Mechanism of anterior cruciate ligament injuries in soccer, Int J Sports Med, 27, pp. 75-79, (2006); Ford K.R., Myer G.D., Toms H.E., Hewett T.E., Gender differences in the kinematics of unanticipated cutting in young athletes, Med Sci Sports Exerc, 37, pp. 124-129, (2005); Cortes N., Quammen D., Lucci S., Greska E., Onate J., A functional agility short-term fatigue protocol changes lower extremity mechanics, J Sports Sci, 30, pp. 797-805, (2012); Borotikar B.S., Newcomer R., Koppes R., McLean S.G., Combined effects of fatigue and decision making on female lower limb landing postures: central and peripheral contributions to ACL injury risk, Clin Biomech (Bristol, Avon), 23, pp. 81-92, (2008); Bangsbo J., Mohr M., Krustrup P., Physical and metabolic demands of training and match-play in the elite football player, J Sports Sci, 24, pp. 665-674, (2006); Cortes N., Onate J., Morrison S., Differential effects of fatigue on movement variability, Gait Posture, 39, pp. 888-893, (2014); Stern A., Kuenze C., Herman D., Sauer L.D., Hart J.M., A gender comparison of central and peripheral neuromuscular function after exercise, J Sport Rehabil, 21, pp. 209-217, (2012); Iguchi J., Tateuchi H., Taniguchi M., Ichihashi N., The effect of sex and fatigue on lower limb kinematics, kinetics, and muscle activity during unanticipated side-step cutting, Knee Surg Sports Traumatol Arthrosc, 22, pp. 41-48, (2014)","J.C. Garbalosa; Quinnipiac University, Hamden, MNH 141A, 275 Mount Carmel Ave, 06518, United States; email: juan.garbalosa@quinnipiac.edu","","Elsevier B.V.","09680160","","KNEEF","26050139","English","Knee","Article","Final","","Scopus","2-s2.0-84930357500" "Eils E.; Streyl M.","Eils, E. (6602491840); Streyl, M. (6504318457)","6602491840; 6504318457","A one year aging process of a soccer shoe does not increase plantar loading of the foot during soccer specific movements; [Eine einjährige nutzung eines fußballschuhs führt nicht zu einer verstärkten plantaren belastung des fußes bei fußballspezifischen bewegungen]","2005","Sportverletzung-Sportschaden","19","3","","140","145","5","6","10.1055/s-2005-858471","https://www.scopus.com/inward/record.uri?eid=2-s2.0-26244455110&doi=10.1055%2fs-2005-858471&partnerID=40&md5=70cd59da55bea0298e2fe776c8eb6286","Funktionsbereich Bewegungsanalytik, Klinik und Poliklinik für Allgemeine Orthopädie, Universitätsklinikum Münster, Germany; Funktionsbereich Bewegungsanalytik, Klinik und Poliklinik für Allgemeine Orthopädie, Universitätsklinikum Münster, 48129 Münster, Domagkstraße 3, Germany","Eils E., Funktionsbereich Bewegungsanalytik, Klinik und Poliklinik für Allgemeine Orthopädie, Universitätsklinikum Münster, Germany, Funktionsbereich Bewegungsanalytik, Klinik und Poliklinik für Allgemeine Orthopädie, Universitätsklinikum Münster, 48129 Münster, Domagkstraße 3, Germany; Streyl M., Funktionsbereich Bewegungsanalytik, Klinik und Poliklinik für Allgemeine Orthopädie, Universitätsklinikum Münster, Germany","Introduction: Excessive loading of the plantar surface of the foot has been considered as a possible cause for overuse injuries in soccer. The question arises whether this excessive loading may be reduced by the use of cushioning insoles in a soccer shoe. Aim: To evaluate the influence of a controlled aging process on the loading pattern of the foot inside a soccer shoe. Materials and Methods: 11 experienced soccer players wore a soccer shoe for one year on a regular basis during training sessions and games. After this period, three different aging conditions (old shoe with old insole, old shoe with new insole and new shoe with new insole) were tested during different soccer specific movements regarding plantar loading characteristics using an insole pressure distribution system (Pedar, Novel GmbH, Munich). Results: The comparison between the three different aging conditions showed no consistent results for the parameters peak pressures and relative loads for 10 different foot areas. A trend towards slightly reduced peak pressures was found for characteristic loading zones during side-cutting and kicking. On the other hand, slightly increased peak pressures were found during running and sprinting after using a new insole or a new shoe. No consistent results were found for the relative loads between conditions. Discussion: The hypothesis of a load reduction after introducing a new insole or a new shoe could not be confirmed. The aging process appears to be influenced by different factors like material properties, form changes or individual adaptation processes. © Georg Thieme Verlag KC Stuttgart.","Aging process; Biomechanics; Insoles; Pressure distribution; Soccer","Adult; Athletic Injuries; Equipment Design; Equipment Failure Analysis; Foot; Humans; Male; Movement; Pressure; Shoes; Soccer; Sports Equipment; Time Factors; Weight-Bearing; adult; article; clinical trial; equipment; equipment design; foot; human; male; movement (physiology); physiology; pressure; shoe; sport; sport injury; time; weight bearing","Knapp T.P., Mandelbaum B.R., Garrett W.E., Why are stress injuries so common in the soccer player?, Clin Sports Med, 17, pp. 835-853, (1998); Monto R.R., Time to redesign the trusty football boot?, New Scientist, (1993); Peterson L., Junge A., Chomiak J., Et al., Incidence of football injuries and complaints in different age groups and skill-level groups, Am J Sports Med, 28, (2000); Inklaar H., Soccer injuries. II: Aetiology and prevention, Sports Med, 18, pp. 81-93, (1994); Andersen T.E., Larsen O., Tenga A., Et al., Football incident analysis: A new video based method to describe injury mechanisms in professional football, Br J Sports Med, 37, pp. 226-232, (2003); Caraffa A., Cerulli G., Projetti M., Et al., Prevention of anterior cruciate ligament injuries in soccer, Knee Surgery, Sports Traumatology, Arthroscopy, 4, pp. 19-21, (1996); Fried T., Lloyd G.J., An overview of common soccer injuries. Management and prevention, Sports Med, 14, pp. 269-275, (1992); Inklaar H., Soccer injuries. I: Incidence and severity, Sports Med, 18, pp. 55-73, (1994); Keller C.S., Noyes F.R., Buncher C.R., The medical aspects of soccer injury epidemiology, Am J Sports Med, 16, (1988); Dvorak J., Junge A., Football injuries and physical symptoms. A review of the literature, Am J Sports Med, 28, (2000); Eils E., Streyl M., Linnenbecker S., Et al., Characteristic plantar pressure distribution patterns during soccer-specific movements, Am J Sports Med, 32, pp. 140-145, (2004); Eils E., Streyl M., Linnenbecker S., Et al., Plantar pressure measurements in a soccer shoe: Characterization of soccer specific movements and effects after six weeks of ageing, 5th Symposium on Footwear Biomechanics, pp. 32-33, (2001); Hennig E., Biomechanische Testkriterien für Sportschuhe, Sportverletzung Sportschaden, 7, pp. 191-195, (1993); House C.M., Waterworth C., Allsopp A.J., Et al., The influence of simulated wear upon the ability of insoles to reduce peak pressures during running when wearing military boots, Gait Posture, 16, pp. 297-303, (2002); Nigg B.M., The role of impact forces and foot pronation: A new paradigm, Clin J Sport Med, 11, pp. 2-9, (2001)","E. Eils; Funktionsbereich Bewegungsanalytik, Klinik und Poliklinik für Allgemeine Orthopädie, Universitätsklinikum Münster, 48129 Münster, Domagkstraße 3, Germany; email: eils@uni-muenster.de","","","09320555","","","16167267","German","Sportverletzung-Sportschaden","Article","Final","","Scopus","2-s2.0-26244455110" "Zhang X.; Shan G.; Liu F.; Yang S.; Meng M.","Zhang, Xiang (54381067000); Shan, Gongbing (7005942347); Liu, Feng (57218291657); Yang, Shenglai (57222102257); Meng, Mingliang (9043286000)","54381067000; 7005942347; 57218291657; 57222102257; 9043286000","Diversity of scoring, ingenuity of striking, art of flying ’ conceptual and systematical identification of soccer scoring techniques","2021","Physical Activity Review","9","1","","79","92","13","6","10.16926/par.2021.09.10","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101394109&doi=10.16926%2fpar.2021.09.10&partnerID=40&md5=e05e723f78768ce1d4fecd9558a4c68c","Department of Physical Education, Xinzhou Teachers' University, Xinzhou, China; Department of Kinesiology, University of Lethbridge, Lethbridge, Canada; School of Physical Education, Shaanxi Normal University, Xi’an, China","Zhang X., Department of Physical Education, Xinzhou Teachers' University, Xinzhou, China; Shan G., Department of Physical Education, Xinzhou Teachers' University, Xinzhou, China, Department of Kinesiology, University of Lethbridge, Lethbridge, Canada, School of Physical Education, Shaanxi Normal University, Xi’an, China; Liu F., School of Physical Education, Shaanxi Normal University, Xi’an, China; Yang S., School of Physical Education, Shaanxi Normal University, Xi’an, China; Meng M., Department of Physical Education, Xinzhou Teachers' University, Xinzhou, China","The terms of soccer scoring techniques (SSTs) used in practice and research have been remaining confusing; even dramatic, we still do not know how many SSTs available for the game. This scenario hinders not only the scientific studies on some unique SSTs but also the development of novel coaching methods for learning these SSTs. The current paper aims to bridge the gap by establishing a SST terminology system. The system is built based on goal repeatability, selected anatomical & biomechanical parameters, and analyses of 579 attractive goals from international professional tournaments. The results have revealed that there are 43 SSTs existed in current soccer practice. Some SSTs can be identified by preliminary parameters (i.e. anatomical parameters, the ball vertical position at the shot and the hit-point on the ball), but most of them need additional biomechanical examination on the movement control in frontal & transverse planes, jumping control, and trunk orientation at shots in order to identify uniquely. Further, the new SST terminology has disclosed that soccer attractiveness is linked to the diversity, ingenuity and artistry of shots. The most attractive type of scoring awaited by millions of spectators is aerial shots. Lastly, the most important contribution of the new SST terminology system is to help researchers and practitioners launch target-orientated studies that would provide a practical and convincing scientific coach-method, clear definitions, and means to reevaluate and improve SSTs in practice. © 2021. All rights reserved.","aerial shots; anatomy; biomechanics; goal repeatability; scientific-based training system","","Reilly T, Williams M., Science and soccer, (2003); Shan G, Et al., Biomechanics of coaching maximal instep soccer kick for practitioners, Interdisciplinary Science Reviews, 44, 1, pp. 12-20, (2019); Average number of goals scored per game at the FIFA World Cup from 1930 to 2018, 2020; Shan G, Zhang X., From 2D Leg Kinematics to 3D Full-body Biomechanics – The Past, Present and Future of Scientific Analysis of Maximal Instep Kick in Soccer, Sports Medicine Arthroscopy Rehabilitation Therapy Technology, 3, (2011); Lees A, Et al., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, 8, pp. 805-817, (2010); Shan G, Et al., Biomechanical analysis of maximal instep kick by female soccer players, Journal of Human Movement Studies, 49, pp. 149-168, (2005); La liga. TOP 20 GOALS Acrobáticos LaLiga Santander 2008-2009 a 2018-2019, 2020; Top 10 Best Acrobatic Goals of The Decade 2010-2019, 2020; Stunning Acrobatic, Overhead & Bicycle Kick Goals - Premier League, 2020; EPIC Premier League Volleys, 2020; Cheeky Premier League Goals, 2020; Shan G., Influences of Gender and Experience on the Maximal Instep Soccer Kick, European Journal of Sport Science, 9, 2, pp. 107-114, (2009); Shan G., Biomechanical Know-how of Fascinating Soccer-kicking Skills – 3D, Full-body Demystification of Maximal Instep Kick, Bicycle kick & Side Volley, 8th International Scientific Conference on Kinesiology, (2017); FIFA introduces new FIFA Puskás Award to honour the ""goal of the year, (2009); Shan G, Et al., Regression Equations related to the Quality Evaluation of Soccer Maximal Instep Kick for Males and Females, Kinesiology, 44, 2, pp. 139-147, (2012); Zhang X, Shan G., Where do golf driver swings go wrong? - Factors Influencing Driver Swing Consistency, Scandinavian Journal of Medicine and Science in Sports, 24, 5, pp. 749-757, (2014); Visentin P, Et al., Unraveling mysteries of personal performance style; biomechanics of left-hand position changes (shifting) in violin performance, Peer J, 3, (2015); Shan G, Et al., Bicycle kick in soccer: is the virtuosity systematically entrainable?, Science bulletin, 60, 8, pp. 819-821, (2015); Wan B, Shan G., Biomechanical modeling as a practical tool for predicting injury risk related to repetitive muscle lengthening during learning and training of human complex motor skills, SpringerPlus, 5, 1, (2016); Visentin P, Shan G, Wasiak EB., Informing music teaching and learning using movement analysis technology, International Journal of Music Education, 26, 1, pp. 73-87, (2008); Zhang Z, Et al., The influence of X-factor (trunk rotation) and experience on the quality of the badminton forehand smash, Journal of human kinetics, 53, 1, pp. 9-22, (2016); Li S, Et al., The relevance of body positioning and its training effect on badminton smash, Journal of sports sciences, 35, 4, pp. 310-316, (2017); Yu D, Et al., Biomechanical characteristics of the axe kick in Tae Kwon-Do, Archives of Budo, 8, 4, pp. 213-218, (2012); Wasik J, Shan G., Target effect on the kinematics of Taekwondo Roundhouse Kick–is the presence of a physical target a stimulus, influencing muscle-power generation?, Acta of Bioengineering and Biomechanics, 17, 4, pp. 115-120, (2015); Liu Y, Et al., Biomechanical analysis of Yang’s spear turning-stab technique in Chinese martial arts, Physical Activity Review, 8, 2, pp. 16-22, (2020); Youth Football Training Manual, (2017); Magill R.A., Motor learning concepts and applications, (2001); Wasik J, Et al., The influence of gender, dominant lower limb and type of target on the velocity of taekwon-do front kick, Acta of Bioengineering and Biomechanics, 20, 2, pp. 133-138, (2018); Wasik J, Shan G., Kinematics of the turning kick – measurements obtained in testing well-trained taekwon-do athletes, Archives of Budo, 11, pp. 61-67, (2015); Wasik J., Kinematics and Kinetics of Taekwon-do Side Kick, Journal of Human Kinetics, 30, pp. 13-20, (2011); (2017); Goyder J., Is Soccer Star Zlatan Ibrahimovic Using Taekwondo to Score Goals? 2020; UEFA. Videos; La liga. Videos; Premier League. Videos; Bundesliga. Videos; YouTube. Zlatan Ibrahimovic - TOP 25 Greatest Goals Ever, (2020); Shan G, Bohn C., Anthropometrical data and coefficients of regression related to gender and race, Applied ergonomics, 34, 4, pp. 327-337, (2003); Winter DA., Biomechanics and motor control of human movement, (2009); Shan G, Westerhoff P., Full body kinematic characteristics of the maximal instep Soccer kick by male soccer players and parameters related to kick quality, Sports Biomechanics, 4, 1, pp. 59-72, (2005); Zhang X, Et al., Jumping Side Volley in Soccer – a Biomechanical Preliminary Study on the Flying Kick and Its Coaching Know-how for Practitioners, Preprints, (2020); Thommes F, Fußballtraining für jeden Tag: die 365 besten Übungen, (2012); Banerjee R., Knuckleball free-kick tutorial: How to hit a free-kick like Cristiano Ronaldo and Gareth Bale?, (2019); American Institute of Physics, What's behind the success of the soccer ‘Knuckleball’?, (2012)","G. Shan; Department of Kinesiology, University of Lethbridge, Lethbridge, Canada; email: g.shan@uleth.ca","","PPHU Projack","23005076","","","","English","Phys. Act. Rev.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85101394109" "Hanimann J.; Ellenberger L.; Bernhard T.; Franchi M.V.; Roth R.; Faude O.; Spörri J.","Hanimann, Jonas (57218602874); Ellenberger, Lynn (57208859927); Bernhard, Thomas (57472004400); Franchi, Martino V. (56026602500); Roth, Ralf (14046100300); Faude, Oliver (8323085800); Spörri, Jörg (55330838300)","57218602874; 57208859927; 57472004400; 56026602500; 14046100300; 8323085800; 55330838300","More than just a side effect: Dynamic knee valgus and deadbug bridging performance in youth soccer players and alpine skiers have similar absolute values and asymmetry magnitudes but differ in terms of the direction of laterality","2023","Frontiers in Physiology","14","","1129351","","","","4","10.3389/fphys.2023.1129351","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85150490212&doi=10.3389%2ffphys.2023.1129351&partnerID=40&md5=f79dc9ff85b7458bc5e5e470f41b9e0d","Sports Medical Research Group, Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland; University Centre for Prevention and Sports Medicine, Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland; Swiss Council for Accident Prevention BFU, Bern, Switzerland; Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland; FC Basel, Basel, 1893, Switzerland; Institute of Physiology, Department of Biomedical Sciences, University of Padova, Padova, Italy","Hanimann J., Sports Medical Research Group, Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland, University Centre for Prevention and Sports Medicine, Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland; Ellenberger L., Sports Medical Research Group, Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland, University Centre for Prevention and Sports Medicine, Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland, Swiss Council for Accident Prevention BFU, Bern, Switzerland; Bernhard T., Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland, FC Basel, Basel, 1893, Switzerland; Franchi M.V., Institute of Physiology, Department of Biomedical Sciences, University of Padova, Padova, Italy; Roth R., Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland; Faude O., Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland; Spörri J., Sports Medical Research Group, Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland, University Centre for Prevention and Sports Medicine, Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland","From a preventative perspective, leg axis and core stabilization capacities are important for soccer players and alpine skiers; however, due to different sport-specific demands, the role of laterality clearly differs and may result in functional long-term adaptations. The aims of this study are 1) to determine whether there are differences in leg axis and core stability between youth soccer players and alpine skiers and 2) between dominant and non-dominant sides, and 3) to explore the outcomes of applying common sport-specific asymmetry thresholds to these two distinct cohorts. Twenty-one highly trained/national-level soccer players (16.1 years, 95% CI: 15.6, 16.5) and 61 alpine skiers (15.7 years, 95% CI: 15.6, 15.8) participated in this study. Using a marker-based 3D motion capture system, dynamic knee valgus was quantified as the medial knee displacement (MKD) during drop jump landings, and core stability was quantified as the vertical displacement during deadbug bridging exercise (DBBdisplacement). For the analysis of sports and side differences, a repeated-measures multivariate analysis of variance was used. For the interpretation of laterality, coefficients of variation (CV) and common asymmetry thresholds were applied. There were no differences in MKD or DBBdisplacement between soccer players and skiers or between the dominant and non-dominant sides, but there was an interaction effect side*sports for both variables (MKD: p = 0.040, η2p = 0.052; DBBdisplacement: p = 0.025, η2p = 0.061). On average, MKD was larger on the non-dominant side and DBBdisplacement laterality on the dominant side in soccer players, whereas this pattern was reversed in alpine skiers. Despite similar absolute values and asymmetry magnitudes of dynamic knee valgus and deadbug bridging performance in youth soccer players and alpine skiers, the effect on the direction of laterality was opposite even though much less pronounced. This may imply that sport-specific demands and potential laterality advantages should be considered when dealing with asymmetries in athletes. Copyright © 2023 Hanimann, Ellenberger, Bernhard, Franchi, Roth, Faude and Spörri.","alpine skiing; athletes; exercise test; injury prevention; performance; soccer","acceleration; accident prevention; adolescent; anthropometric parameters; Article; biomechanics; core stability; cross-sectional study; deadbug bridging performance; dynamic knee valgus; exercise test; ground reaction force; hemispheric dominance; human; human experiment; injury; knee; male; medial knee displacement; medical procedures; musculoskeletal system; rheumatoid arthritis; skier; soccer player; velocity","Alentorn-Geli E., Myer G.D., Silvers H.J., Samitier G., Romero D., Lazaro-Haro C., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: Mechanisms of injury and underlying risk factors, Knee Surg. Sports Traumatol. Arthrosc, 17, pp. 705-729, (2009); Barber S.D., Noyes F.R., Mangine R.E., Mccloskey J.W., Hartman W., Quantitative assessment of functional limitations in normal and anterior cruciate ligament-deficient knees, Clin. Orthop. Relat. Res, 255, pp. 204-214, (1990); Bere T., Florenes T.W., Krosshaug T., Koga H., Nordsletten L., Irving C., Et al., Mechanisms of anterior cruciate ligament injury in world cup alpine skiing: A systematic video analysis of 20 cases, Am. J. Sports Med, 39, pp. 1421-1429, (2011); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Med. Sci. Sports Exerc, 33, pp. 1168-1175, (2001); Bishop C., Abbott W., Brashill C., Turner A., Lake J., Read P., Bilateral vs. Unilateral countermovement jumps: Comparing the magnitude and direction of asymmetry in elite academy soccer players, J. Strength Cond. Res, 36, pp. 1660-1666, (2022); Bishop C., Lake J., Loturco I., Papadopoulos K., Turner A., Read P., Interlimb asymmetries: The need for an individual approach to data analysis, J. Strength Cond. Res, 35, pp. 695-701, (2021); Bishop C., Read P., Lake J., Chavda S., Turner A., Interlimb asymmetries: Understanding how to calculate differences from bilateral and unilateral tests, Strength & Cond. J, 40, pp. 1-6, (2018); Bishop C., Turner A., Read P., Effects of inter-limb asymmetries on physical and sports performance: A systematic review, J. Sports Sci, 36, pp. 1135-1144, (2018); Bjordal J.M., Arnly F., Hannestad B., Strand T., Epidemiology of anterior cruciate ligament injuries in soccer, Am. J. 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Physiology, 8, (2017); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer: An update, Sports Med, 35, pp. 501-536, (2005); Supej M., Ogrin J., Holmberg H.C., Whole-body vibrations associated with alpine skiing: A risk factor for low back pain?, Front. Physiol, 9, (2018); Westin M., Harringe M.L., Engstrom B., Alricsson M., Werner S., Risk factors for anterior cruciate ligament injury in competitive adolescent alpine skiers, Orthop. J. Sports Med, 6, (2018); Westin M., Mirbach L.I., Harringe M.L., Side-to-side differences in knee laxity and side hop test may predispose an anterior cruciate ligament reinjury in competitive adolescent alpine skiers, Front. Sports Act. Living, 4, (2022); Westin M., Norlen A., Harringe M., Werner S., A screening instrument for side dominance in competitive adolescent alpine skiers, Front. Sports Act. Living 4, 4, (2022); Zazulak B.T., Hewett T.E., Reeves N.P., Goldberg B., Cholewicki J., Deficits in neuromuscular control of the trunk predict knee injury risk: A prospective biomechanical-epidemiologic study, Am. J. Sports Med, 35, pp. 1123-1130, (2007); Zorko M., Nemec B., Babic J., Lesnik B., Supej M., The waist width of skis influences the kinematics of the knee joint in alpine skiing, J. Sports Sci. Med, 14, pp. 606-619, (2015)","J. Hanimann; Sports Medical Research Group, Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland; email: jonas.hanimann@balgrist.ch","","Frontiers Media SA","1664042X","","","","English","Front. Physiol.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85150490212" "Leporace G.; Tannure M.; Zeitoune G.; Metsavaht L.; Marocolo M.; Souto Maior A.","Leporace, Gustavo (36185833500); Tannure, Marcio (57202919252); Zeitoune, Gabriel (55515966900); Metsavaht, Leonardo (6507801398); Marocolo, Moacir (15843702500); Souto Maior, Alex (57202915406)","36185833500; 57202919252; 55515966900; 6507801398; 15843702500; 57202915406","Association between knee-to-hip flexion ratio during single-leg vertical landings, and strength and range of motion in professional soccer players","2020","Sports Biomechanics","19","3","","411","420","9","5","10.1080/14763141.2018.1494207","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85049790603&doi=10.1080%2f14763141.2018.1494207&partnerID=40&md5=a74f6b269c5adf4f580da6c35e8ad4bf","Department of Research in Biomechanics, Institute Brazil of Technologies in Health, Rio de Janeiro, Brazil; Performance Excellence Center, Flamengo Sport Club, Rio de Janeiro, Brazil; Biomedical Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; Department of Physiology, Institute of Biological Sciences, Universidade Federal de Juiz de Fora, Minas Gerais, Brazil; Department of Rehabilitation Sciences, University Augusto Mota, Rio de Janeiro, Brazil","Leporace G., Department of Research in Biomechanics, Institute Brazil of Technologies in Health, Rio de Janeiro, Brazil; Tannure M., Performance Excellence Center, Flamengo Sport Club, Rio de Janeiro, Brazil; Zeitoune G., Department of Research in Biomechanics, Institute Brazil of Technologies in Health, Rio de Janeiro, Brazil, Biomedical Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; Metsavaht L., Department of Research in Biomechanics, Institute Brazil of Technologies in Health, Rio de Janeiro, Brazil; Marocolo M., Department of Physiology, Institute of Biological Sciences, Universidade Federal de Juiz de Fora, Minas Gerais, Brazil; Souto Maior A., Department of Rehabilitation Sciences, University Augusto Mota, Rio de Janeiro, Brazil","The aim of this study was to test the correlation between knee-to-hip flexion ratio during a single leg landing task and hip and knee strength, and ankle range of motion. Twenty-four male participants from a professional soccer team performed a continuous single leg jump-landing test during 10s, while lower limb kinematics data were collected using a motion analysis system. After biomechanical testing, maximal isometric hip (abduction, extension, external rotation), knee extension and flexion strength were measured. Maximum ankle dorsiflexion range of motion was assessed statically using the weight bearing lunge test. Pearson correlation coefficients were calculated to determine the associations between the predictor variables (knee and hip strength, and ankle ROM) and the main outcome measure (knee-to-hip flexion ratio). Correlation between knee-to-hip flexion ratio and hip abductors strength was significant (r = −0.47; p = 0.019). No other significant correlations were observed among the variables (p > 0.05). These results demonstrated that a lower hip abductors strength in male soccer players was correlated with a high knee-to-hip flexion ratio during landing from a single leg jump, potentially increasing knee overload by decreasing energy absorption at the hip. The results provide a novel proposal for the functioning of hip muscles to control knee overload. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.","biomechanics; injury; jumping; male; Quadriceps dominance","Adult; Ankle; Biomechanical Phenomena; Hip; Humans; Knee; Male; Muscle Strength; Range of Motion, Articular; Soccer; Time and Motion Studies; Young Adult; adult; ankle; biomechanics; hip; human; joint characteristics and functions; knee; male; muscle strength; physiology; soccer; task performance; young adult","Backman L.J., Danielson P., Low range of ankle dorsiflexion predisposes for patellar tendinopathy in junior elite basketball players: A 1-year prospective study, The American Journal of Sports Medicine, 39, pp. 2626-2633, (2011); Baldon R.M., Lobato D.F.M., Carvalho L.P., Santiago P.R.P., Benze B.G., Serrao F.V., Relationship between eccentric hip torque and lower-limb kinematics: Gender differences, Journal of Applied Biomechanics, 27, pp. 223-232, (2011); 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Hoch M.C., McKeon P.O., Joint mobilization improves spatiotemporal postural control and range of motion in those with chronic ankle instability, Journal of Orthopaedic Research, 29, pp. 326-332, (2011); Ieiri A., Tushima E., Ishida K., Inoue M., Kanno T., Masuda T., Reliability of measurements of hip abduction strength obtained with a hand-held dynamometer, Physiotherapy in Theory and Practice, 31, pp. 146-152, (2015); Jacobs C.A., Uhl T.L., Mattacola C.G., Shapiro R., Rayens W.S., Hip abductor function and lower extremity landing kinematics: Sex differences, Journal of Athletic Training, 42, pp. 76-83, (2007); Kadaba M.P., Ramakrishnan H.K., Wootten M.E., Measurement of lower extremity kinematics during level walking, Journal of Orthopaedic Research, 8, pp. 383-392, (1990); Kainz H., Modenese L., Lloyd D.G., Maine S., Walsh H.P., Carty C.P., Joint kinematic calculation based on clinical direct kinematic versus inverse kinematic gait models, Journal of Biomechanics, 49, pp. 1658-1669, (2016); Kim S.G., Lee Y.S., The intra- and inter-rater reliabilities of lower extremity muscle strength assessment of healthy adults using a hand held dynamometer, Journal of Physical Therapy and Science, 27, pp. 1799-1801, (2015); Lian O.B., Engebretsen L., Bahr R., Prevalence of jumper's knee among elite athletes from different sports: A cross-sectional study, The American Journal of Sports Medicine, 33, pp. 561-567, (2005); Malloy P., Morgan A.M., Meinerz C.M., Geiser C.F., Kipp K., The association of dorsiflexion flexibility on knee kinematics and kinetics during a drop vertical jump in healthy female athletes, Knee Surgery, Sports Traumatology and Arthroscopy, 23, pp. 3550-3555, (2015); Malloy P.J., Morgan A.M., Meinerz C.M., Geiser C.F., Kipp K., Hip external rotator strength is associated with better dynamic control of the lower extremity during landing tasks, Journal of Strength and Conditioning Research, 30, pp. 282-291, (2016); Mann K.J., Edwards S., Drinkwater E.J., Bird S.P., A lower limb assessment tool for athletes at risk of developing patellar tendinopathy, Medicine and Science in Sports and Exercise, 45, pp. 527-533, (2013); Powers C.M., The influence of abnormal hip mechanics on knee injury: A biomechanical perspective, Journal of Orthopedics and Sports Physical Therapy, 40, pp. 42-51, (2010); Read P.J., Oliver J.L., De Ste Croix M.B., Myer G.D., Lloyd R.S., Neuromuscular risk factors for knee and ankle ligament injuries in male youth soccer players, Sports Medicine, 46, pp. 1059-1066, (2016); Scattone Silva R., Ferreira A.L., Nakagawa T.H., Santos J.E., Serrao F.V., Rehabilitation of patellar tendinopathy using hip extensor strengthening and landing-strategy modification: Case report with 6-month follow-up, Journal of Orthopedics and Sports Physical Therapy, 45, pp. 899-909, (2015); Shultz S.J., Nguyen A.D., Leonard M.D., Schmitz R.J., Thigh strength and activation as predictors of knee biomechanics during a drop jump task, Medicine and Science in Sports and Exercise, 41, pp. 857-866, (2009); Stratford P.W., Balsor B.E., A comparison of make and break tests using a hand-held dynamometer and the kin-com, Journal of Orthopedics and Sports Physical Therapy, 19, pp. 28-32, (1994); Suzuki H., Omori G., Uematsu D., Nishino K., Endo N., The influence of hip strength on knee kinematics during a single-legged medial drop landing among competitive collegiate basketball players, International Journal of Sports Physical Therapy, 10, pp. 592-601, (2015); Teng H.L., Powers C.M., Hip-extensor strength, trunk posture, and use of the knee-extensor muscles during running, Journal of Athletic Training, 51, pp. 519-524, (2016); Thorborg K., Bandholm T., Holmich P., Hip- and knee-strength assessments using a hand-held dynamometer with external belt-fixation are inter-tester reliable, Knee Surgery, Sports Traumatology and Arthroscopy, 21, pp. 550-555, (2013); Van der Worp H., de Poel H.J., Diercks R.L., van den Akker-Scheek I., Zwerver J., Jumper’s knee or lander’s knee? A systematic review of the relation between jump biomechanics and patellar tendinopathy, International Journal of Sports Medicine, 35, pp. 714-722, (2014); Wojtys E.M., Ashton-Miller J.A., Huston L.J., A gender-related difference in contribution of the knee musculature to sagittal-plane shear stiffness in subjects with similar knee laxity, Journal of Bone and Joint Surgery, 84, pp. 10-16, (2002)","G. Leporace; Department of Research in Biomechanics, Institute Brazil of Technologies in Health, Rio de Janeiro, Brazil; email: gustavo@biocinetica.com.br","","Routledge","14763141","","","30001180","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-85049790603" "Fischer P.D.; Hutchison K.A.; Becker J.N.; Monfort S.M.","Fischer, Patrick D. (57226705953); Hutchison, Keith A. (7005354201); Becker, James N. (56498343600); Monfort, Scott M. (56581629500)","57226705953; 7005354201; 56498343600; 56581629500","Evaluating the spectrum of cognitive-motor relationships during dual-task jump landing","2021","Journal of Applied Biomechanics","37","4","","388","395","7","4","10.1123/jab.2020-0388","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85112406192&doi=10.1123%2fjab.2020-0388&partnerID=40&md5=aba8ae241ec4c2f2ede2fae490aa6e8c","Department of Mechanical and Industrial Engineering, Montana State University, Bozeman, MT, United States; Department of Psychology, Montana State University, Bozeman, MT, United States; Department of Health and Human Performance, Montana State University, Bozeman, MT, United States","Fischer P.D., Department of Mechanical and Industrial Engineering, Montana State University, Bozeman, MT, United States; Hutchison K.A., Department of Psychology, Montana State University, Bozeman, MT, United States; Becker J.N., Department of Health and Human Performance, Montana State University, Bozeman, MT, United States; Monfort S.M., Department of Mechanical and Industrial Engineering, Montana State University, Bozeman, MT, United States","Cognitive function plays a role in understanding noncontact anterior cruciate ligament injuries, but the research into how cognitive function influences sport-specific movements is underdeveloped. The purpose of this study was to determine how various cognitive tasks influenced dual-task jump-landing performance along with how individuals' baseline cognitive ability mediated these relationships. Forty female recreational soccer and basketball players completed baseline cognitive function assessments and dual-task jump landings. The baseline cognitive assessments quantified individual processing speed, multitasking, attentional control, and primary memory ability. Dual-task conditions for the jump landing included unanticipated and anticipated jump performance, with and without concurrent working memory and captured visual attention tasks. Knee kinematics and kinetics were acquired through motion capture and ground reaction force data. Jumping conditions that directed visual attention away from the landing, whether anticipated or unanticipated, were associated with decreased peak knee flexion angle (P < .001). No interactions between cognitive function measures and jump-landing conditions were observed for any of the biomechanical variables, suggesting that injury-relevant cognitive-motor relationships may be specific to secondary task demands and movement requirements. This work provides insight into group- and subject-specific effects of established anticipatory and novel working memory dual-task paradigms on the neuromuscular control of a sport-specific movement. © 2021 Human Kinetics, Inc.","ACL; Cognition; Knee; Sports biomechanics","Anterior Cruciate Ligament Injuries; Basketball; Biomechanical Phenomena; Cognition; Female; Humans; Knee Joint; Movement; Basketball; Behavioral research; Biophysics; Brain; Physiological models; Reaction kinetics; Anterior cruciate ligament injury; Cognitive assessments; Cognitive functions; Dual-task conditions; Ground reaction forces; Knee flexion angle; Neuromuscular control; Subject-specific effects; adult; Article; basketball; basketball player; biomechanics; cognition; cognition assessment; controlled study; dual-task performance (test); female; ground reaction force; human; jumping; kinematics; kinetics; knee function; processing speed; recreation; soccer; soccer player; visual attention; working memory; young adult; anterior cruciate ligament injury; basketball; cognition; knee; movement (physiology); Landing","Herzog MM, Marshall SW, Lund JL, Pate V, Spang JT., Cost of outpatient arthroscopic anterior cruciate ligament reconstruction among commercially insured patients in the United States, 2005-2013, Orthop J Sports Med, 5, 1, (2017); Wiggins AJ, Grandhi RK, Schneider DK, Stanfield D, Webster KE, Myer GD., Risk of secondary injury in younger athletes after anterior cruciate ligament reconstruction: A systematic review and metaanalysis, Am J Sports Med, 44, 7, pp. 1861-1876, (2016); Simon D, Mascarenhas R, Saltzman BM, Rollins M, Bach BR, MacDonald P., The relationship between anterior cruciate ligament injury and osteoarthritis of the knee, Adv Orthop, 2015, (2015); Thomas AC, Villwock M, Wojtys EM, Palmieri-Smith RM., Lower extremity muscle strength after anterior cruciate ligament injury and reconstruction, J Athl Train, 48, 5, pp. 610-620, (2013); Krosshaug T, Nakamae A, Boden BP, Et al., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, Am J Sports Med, 35, 3, pp. 359-367, (2007); Walden M, Krosshaug T, Bjorneboe J, Andersen TE, Faul O, Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: A systematic video analysis of 39 cases, Br J Sports Med, 49, 22, pp. 1452-1460, (2015); Boden BP, Dean GS, Feagin JA, Garrett WE., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Swanik CB, Covassin T, Stearne DJ, Schatz P., The relationship between neurocognitive function and noncontact anterior cruciate ligament injuries, Am J Sports Med, 35, 6, pp. 943-948, (2007); McPherson AL, Shirley MB, Schilaty ND, Larson DR, Hewett TE., Effect of a concussion on anterior cruciate ligament injury risk in a general population, Sports Med, 50, 6, pp. 1203-1210, (2020); Wilkerson GB, Grooms DR, Acocello SN., Neuromechanical considerations for postconcussion musculoskeletal injury risk management, Curr Sports Med Rep, 16, 6, pp. 419-427, (2017); Brooks MA, Peterson K, Biese K, Sanfilippo J, Heiderscheit BC, Bell DR., Concussion increases odds of sustaining a lower extremity musculoskeletal injury after return to play among collegiate athletes, Am J Sports Med, 44, 3, pp. 742-747, (2016); Covassin T, Elbin RJ., The cognitive effects and decrements following concussion, Open Access J Sports Med, 2010, 1, pp. 55-61, (2010); Gilbert FC, Burdette GT, Joyner AB, Llewellyn TA, Buckley TA., Association between concussion and lower extremity injuries in collegiate athletes, Sports Health, 8, 6, pp. 561-567, (2016); Herman DC, Jones D, Harrison A, Et al., Concussion may increase the risk of subsequent lower extremity musculoskeletal injury in collegiate athletes, Sports Med, 47, 5, pp. 1003-1010, (2017); Howell DR, Lynall RC, Buckley TA, Herman DC., Neuromuscular control deficits and the risk of subsequent injury after a concussion: A scoping review, Sports Med, 48, 5, pp. 1097-1115, (2018); Wilkerson GB., Neurocognitive reaction time predicts lower extremity sprains and strains, Int J Athl Ther Train, 17, 6, pp. 4-9, (2012); Shultz SJ, Schmitz RJ, Cameron KL, Et al., Anterior cruciate ligament research retreat VIII summary statement: An update on injury risk identification and prevention across the anterior cruciate ligament injury continuum, March 14-16, 2019, Greensboro, NC, J Athl Train, 54, 9, pp. 970-984, (2019); Kahneman D., Attention and Effort, (1973); Dai B, Cook RF, Meyer EA, Et al., The effect of a secondary cognitive task on landing mechanics and jump performance, Sports Biomech, 17, 2, pp. 192-205, (2018); Almonroeder TG, Kernozek T, Cobb S, Slavens B, Wang J, Huddleston W., Cognitive demands influence lower extremity mechanics during a drop vertical jump task in female athletes, J Orthop Sports Phys Ther, 48, 5, pp. 381-387, (2018); Brown TN, Palmieri-Smith RM, McLean SG., Sex and limb differences in hip and knee kinematics and kinetics during anticipated and unanticipated jump landings: Implications for anterior cruciate ligament injury, Br J Sports Med, 43, 13, pp. 1049-1056, (2009); Herman DC, Barth JT., Drop-jump landing varies with baseline neurocognition: Implications for anterior cruciate ligament injury risk and prevention, Am J Sports Med, 44, 9, pp. 2347-2353, (2016); Besier TF, Lloyd DG, Ackland TR., Muscle activation strategies at the knee during running and cutting maneuvers, Med Sci Sports Exerc, 35, 1, pp. 119-127, (2003); Besier TF, Lloyd DG, Ackland TR, Cochrane JL., Anticipatory effects on knee joint loading during running and cutting maneuvers, Med Sci Sports Exerc, 33, 7, pp. 1176-1181, (2001); Besier TF, Lloyd DG, Cochrane JL, Ackland TR., External loading of the knee joint during running and cutting maneuvers, Med Sci Sports Exerc, 33, 7, pp. 1168-1175, (2000); Cortes N, Blount E, Ringleb S, Onate JA., Soccer-specific video simulation for improving movement assessment, Sports Biomech, 10, 1, pp. 22-34, (2011); Monfort SM, Pradarelli JJ, Grooms DR, Hutchison KA, Onate JA, Chaudhari AMW., Visual-spatial memory deficits are related to increased knee valgus angle during a sport-specific sidestep cut, Am J Sports Med, 47, 6, pp. 1488-1495, (2019); Shibata S, Takemura M, Miyakawa S., The influence of differences in neurocognitive function on lower limb kinematics, kinetics, and muscle activity during an unanticipated cutting motion, Phys Ther Res, 21, 2, pp. 44-52, (2018); Giesche F, Wilke J, Engeroff T, Et al., Are biomechanical stability deficits during unplanned single-leg landings related to specific markers of cognitive function?, J Sci Med Sport, 23, 1, pp. 82-88, (2020); Hambrick DZ, Oswald FL, Darowski ES, Rench TA, Brou R., Predictors of multitasking performance in a synthetic work paradigm, Appl Cogn Psychol, 24, 8, pp. 1149-1167, (2010); Unsworth N, Fukuda K, Awh E, Vogel EK., Working memory and fluid intelligence: Capacity, attention control, and secondary memory retrieval, Cogn Psychol, 71, pp. 1-26, (2014); Pollack I, Johnson LB, Knaff PR., Running memory span, J Exp Psychol, 57, 3, pp. 137-146, (1959); Hutchison KA., Attentional control and the relatedness proportion effect in semantic priming, J Exp Psychol Learn Mem Cogn, 33, 4, pp. 645-662, (2007); Scarpina F, Tagini S., The stroop color and word test, Front Psychol, 8, (2017); Redick TS, Shipstead Z, Meier ME, Et al., Cognitive predictors of a common multitasking ability: Contributions from working memory, attention control, and fluid intelligence, J Exp Psychol Gen, 145, 11, pp. 1473-1492, (2016); McLean SG, Lipfert SW, van den Bogert AJ., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, 6, pp. 1008-1016, (2004); Stephenson ML, Hinshaw TJ, Wadley HA, Et al., Effects of timing of signal indicating jump directions on knee biomechanics in jumplanding-jump tasks, Sports Biomech, 17, 1, pp. 67-82, (2018); Kristianslund E, Krosshaug T, van den Bogert AJ., Effect of low pass filtering on joint moments from inverse dynamics: Implications for injury prevention, J Biomech, 45, 4, pp. 666-671, (2012); Deng HL, Gouveia W, Scales JH., An object-oriented toolbox for studying optimization problems, Inverse Methods, pp. 320-330, (1996); Fischer R, Milfont TL., Standardization in psychological research, Int J Psychol Res, 3, 1, pp. 88-96, (2010); Kreidler SM, Muller KE, Grunwald GK, Et al., GLIMMPSE: Online power computation for linear models with and without a baseline covariate, J Stat Softw, 54, 10, (2013); Ford KR, Myer GD, Smith RL, Byrnes RN, Dopirak SE, Hewett TE., Use of an overhead goal alters vertical jump performance and biomechanics, J Strength Cond Res, 19, 2, pp. 394-399, (2005); Mok KM, Bahr R, Krosshaug T., The effect of overhead target on the lower limb biomechanics during a vertical drop jump test in elite female athletes, Scand J Med Sci Sports, 27, 2, pp. 161-166, (2017); Wilke J, Giesche F, Niederer D, Et al., Increased visual distraction can impair landing biomechanics, Biol Sport, 38, 1, pp. 123-127, (2020); Marquez G, Alegre LM, Jaen D, Martin-Casado L, Aguado X., Sex differences in kinetic and neuromuscular control during jumping and landing, J Musculoskelet Neuronal Interact, 17, 1, pp. 409-416, (2017); Louw Q, Grimmer K, Vaughan C., Knee movement patterns of injured and uninjured adolescent basketball players when landing from a jump: A case-control study, BMC Musculoskelet Disord, 7, 22, pp. 1-7, (2006); Taylor JB, Ford KR, Schmitz RJ, Ross SE, Ackerman TA, Shultz SJ., Biomechanical differences of multidirectional jump landings among female basketball and soccer players, J Strength Cond Res, 31, 11, pp. 3034-3045, (2017)","P.D. Fischer; Department of Mechanical and Industrial Engineering, Montana State University, Bozeman, United States; email: patrick.fischer2@student.montana.edu","","Human Kinetics Publishers Inc.","10658483","","JABOE","34271547","English","J. Appl. Biomech.","Article","Final","","Scopus","2-s2.0-85112406192" "Lloyd R.S.; Oliver J.L.; Myer G.D.; de Ste Croix M.B.; Wass J.; Read P.J.","Lloyd, Rhodri S. (24460583700); Oliver, Jon L. (7401628051); Myer, Gregory D. (6701852696); de Ste Croix, Mark B. (6603255583); Wass, Josh (57211579829); Read, Paul J. (55764420600)","24460583700; 7401628051; 6701852696; 6603255583; 57211579829; 55764420600","Comparison of drop jump and tuck jump knee joint kinematics in elite male youth soccer players: Implications for injury risk screening","2020","Journal of Sport Rehabilitation","29","6","","760","765","5","6","10.1123/JSR.2019-0077","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85093081381&doi=10.1123%2fJSR.2019-0077&partnerID=40&md5=1ee7a28e3f475594875a33980da91b2c","School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom; Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand; Centre for Sport Science and Human Performance, Waikato Institute of Technology, Hamilton, Waikato, New Zealand; Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Department of Pediatrics and OrthopaedicSurgery, College of Medicine, University of Cincinnati, Cincinnati, OH, United States; Micheli Center for Sports Injury Prevention, Boston, MA, United States; School of Sport and Exercise, University of Gloucestershire, Gloucester, United Kingdom; English Institute of Sport, Manchester Institute of Health and Performance, Manchester, United Kingdom; Athlete Health and Performance Research Centre, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar","Lloyd R.S., School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom, Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand, Centre for Sport Science and Human Performance, Waikato Institute of Technology, Hamilton, Waikato, New Zealand; Oliver J.L., School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom, Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand; Myer G.D., Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States, Department of Pediatrics and OrthopaedicSurgery, College of Medicine, University of Cincinnati, Cincinnati, OH, United States, Micheli Center for Sports Injury Prevention, Boston, MA, United States; de Ste Croix M.B., School of Sport and Exercise, University of Gloucestershire, Gloucester, United Kingdom; Wass J., English Institute of Sport, Manchester Institute of Health and Performance, Manchester, United Kingdom; Read P.J., School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom, Athlete Health and Performance Research Centre, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar","Context: Despite the popularity of jump-landing tasks being used to identify injury risk factors, minimal data currently exist examining differences in knee kinematics during commonly used bilateral jumping tasks. This is especially the case for rebounding-based protocols involving young athletes. Objective: To compare the frontal plane projection angles (FPPAs) during the drop vertical jump (DVJ) and tuck jump assessment (TJA) in a cohort of elite male youth soccer players of varying maturity status. Methods: A total of 57 male youth soccer players from an English championship soccer club participated in this study. Participants performed 3 trials of the DVJ and TJA, during which movement was recorded with 2-dimensional video cameras. FPPA for both right (FPPA-r) and left (FPPA-l) legs, with values <180° indicative of medial knee displacement. Results: On a whole-group level, FPPA-r (172.7° [7.4°] vs 177.2° [11.7°]; P <.05; effect size [ES] = 0.46) and FPPA-l (173.4° [7.3°] vs 179.2° [11.0°]; P <.05; ES = 0.62) were significantly greater for both limbs in the TJA compared with the DVJ; however, these differences were less consistent when grouped by maturity status. FPPA-r during the TJA was significantly and moderately greater in the circa-peak height velocity (PHV) group compared with the post-PHV cohorts (169.4° [6.4°] vs 175.3° [7.8°]; P <.05; ES = 0.49). Whole-group data showed moderate relationships for FPPA-r and FPPA-l between the TJA and DVJ; however, stronger relationships were shown in circa- and post-PHV players compared with the pre-PHV cohort. Conclusions: Considering that the TJA exposed players to a larger FPPA and was sensitive to between-group differences in FPPA-r, the TJA could be viewed as a more suitable screen for identifying FPPA in young male soccer players. © 2020 Human Kinetics, Inc.","Frontal plane projection angle; Knee valgus; Maturation; Tuck jump assessment","Adolescent; Athletic Injuries; Biomechanical Phenomena; Child; Exercise Test; Humans; Knee Joint; Male; Mass Screening; Movement; Risk Factors; Soccer; adolescent; biomechanics; child; comparative study; exercise test; human; knee; male; mass screening; movement (physiology); physiology; procedures; risk factor; soccer; sport injury","Schmikli SL, de Vries WR, Inklaar H, Backx FJ., Injury prevention target groups in soccer: injury characteristics and incidence rates in male junior and senior players, J Sci Med Sport, 14, 3, pp. 199-203, (2011); Read PJ, Oliver JL, De Ste Croix MBA, Myer GD, Lloyd RS., An audit of injuries in six English professional soccer academies, J Sports Sci, 36, 13, pp. 1542-1548, (2018); Read PJ, Oliver JL, De Ste Croix M, Myer GD, Lloyd RS., Neuromuscular injury risk factors for knee and ankle injuries in male youth soccer players, Sports Med, 46, 8, pp. 1059-1066, (2016); Hewett TE, Myer GD, Ford KR, Slauterbeck JR., Preparticipation physical examination using a box drop vertical jump test in young athletes: the effects of puberty and sex, Clin J Sport Med, 16, 4, pp. 298-304, (2006); Padua DA, DiStefano LJ, Beutler AI, de la Motte SJ, DiStefano MJ, Marshall SW., The landing error scoring system as a screening tool for an anterior cruciate ligament injury-prevention program in elite-youth soccer athletes, J Athl Train, 50, 6, pp. 589-595, (2015); Myer GD, Ford KR, Brent JL, Hewett TE., Differential neuromuscular training effects on ACL injury risk factors in“high-risk” versus “low-risk” athletes, BMC Musculoskelet Disord, 8, (2007); Read PJ, Jimenez P, Oliver JL, Lloyd RS., Injury prevention in male youth soccer: current practices and perceptions of practitioners working at elite English academies, J Sports Sci, 36, 12, pp. 1423-1431, (2018); Hewett TE, Myer GD, Ford KR, Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Leppanen M, Pasanen K, Kujala UM, Et al., Stiff landings are associated with increased ACL injury risk in young female basketball and floorball players, Am J Sports Med, 45, 2, pp. 386-393, (2017); Souza RB, Powers CM., Differences in hip kinematics, muscle strength, and muscle activation between subjects with and without patellofemoral pain, J Orthop Sports Phys Ther, 39, 1, pp. 12-19, (2009); Krosshaug T, Steffen K, Kristianslund E, Et al., The vertical drop jump is a poor screening test for ACL injuries in female elite soccer and handball players: a prospective cohort study of 710 athletes, Am J Sports Med, 44, 4, pp. 874-883, (2016); Read PJ, Oliver JL, De Ste Croix M, Myer GD, Lloyd RS., Reliability of the tuck jump injury risk screening assessment in elite male youth soccer players, J Strength Cond Res, 30, 6, pp. 1510-1516, (2016); Myer GD, Ford KR, Hewett TE., Tuck jump assessment for reducing anterior cruciate ligament injury risk, Athl Ther Today, 13, 5, pp. 39-44, (2008); Stroube BW, Myer GD, Brent JL, Ford KR, Heidt RS, Hewett TE., Effects of task-specific augmented feedback on deficit modification during performance of the tuck-jump exercise, J Sport Rehabil, 22, 1, pp. 7-18, (2013); Earl JE, Monteiro SK, Snyder KR., Differences in lower extremity kinematics between a bilateral drop-vertical jump and a single-leg step-down, J Orthop Sports Phys Ther, 37, 5, pp. 245-252, (2007); Munro A, Herrington L, Comfort P., The relationship between 2-dimensional knee-valgus angles during single-leg squat, single-leg-land, and drop-jump screening tests, J Sport Rehabil, 26, 1, pp. 72-77, (2017); Malina R, Bouchard C, Bar-Or O., Growth, Maturation and Physical Activity, (2004); Mirwald RL, Baxter-Jones AD, Bailey DA, Beunen GP., An assessment of maturity from anthropometric measurements, Med Sci Sports Exerc, 34, 4, pp. 689-694, (2002); Noyes FR, Barber-Westin SD, Fleckenstein C, Walsh C, West J., The drop-jump screening test: difference in lower limb control by gender and effect of neuromuscular training in female athletes, Am J Sports Med, 33, 2, pp. 197-207, (2005); Quatman CE, Ford KR, Myer GD, Hewett TE., Maturation leads to gender differences in landing force and vertical jump performance: a longitudinal study, Am J Sports Med, 34, 5, pp. 806-813, (2006); Read PJ, Oliver JL, Myer GD, De Ste Croix MBA, Belshaw A, Lloyd RS., Altered landing mechanics are shown by male youth soccer players at different stages of maturation, Phys Ther Sport, 33, pp. 48-53, (2018); Munro A, Herrington L, Carolan M., Reliability of 2-dimensional video assessment of frontal-plane dynamic knee valgus during common athletic screening tasks, J Sport Rehabil, 21, 1, pp. 7-11, (2012); McLean SG, Walker K, Ford KR, Myer GD, Hewett TE, van den Bogert AJ., Evaluation of a two dimensional analysis method as a screening and evaluation tool for anterior cruciate ligament injury, Br J Sports Med, 39, 6, pp. 355-362, (2005); Cohen J., Statistical Power Analysis for the Behavioural Sciences, (1988); Hopkins WG., A new view of statistics: a scale of magnitudes for effect statistics, (2002); Paz GA, de Freitas Maia M, Santana HG, Miranda H, Lima V, Willson JD., Knee frontal plane projection angle: a comparison study between drop vertical jump and step-down tests with young volleyball athletes, J Sport Rehabil, pp. 1-21, (2017); Read PJ, Oliver JL, De Ste Croix MBA, Myer GD, Lloyd RS., Hopping and landing performance in male youth soccer players: effects of age and maturation, Int J Sports Med, 38, 12, pp. 902-908, (2017); Philippaerts RM, Vaeyens R, Janssens M, Et al., The relationship between peak height velocity and physical performance in youth soccer players, J Sports Sci, 24, 3, pp. 221-230, (2006); van der Sluis A, Elferink-Gemser MT, Coelho-e-Silva MJ, Nijboer JA, Brink MS, Visscher C., Sport injuries aligned to peak height velocity in talented pubertal soccer players, Int J Sports Med, 35, 4, pp. 351-355, (2014); Cesar GM, Tomasevicz CL, Burnfield JM., Frontal plane comparison between drop jump and vertical jump: implications for the assessment of ACL risk of injury, Sports Biomech, 15, 4, pp. 440-449, (2016); Focke A, Strutzenberger G, Jekauc D, Worth A, Woll A, Schwameder H., Effects of age, sex and activity level on counter-movement jump performance in children and adolescents, Eur J Sport Sci, 13, 5, pp. 518-526, (2013); Hart NH, Nimphius S, Weber J, Et al., Musculoskeletal asymmetry in football athletes: a product of limb function over time, Med Sci Sports Exerc, 48, 7, pp. 1379-1387, (2016); Schurr SA, Marshall AN, Resch JE, Saliba SA., Two-dimensional video analysis is comparable to 3D motion capture in lower extremity movement assessment, Int J Sports Phys Ther, 12, 2, pp. 163-172, (2017); Herrington L, Alenezi F, Alzhrani M, Alrayani H, Jones R., The reliability and criterion validity of 2D video assessment of single leg squat and hop landing, J Electromyogr Kinesiol, 34, pp. 80-85, (2017)","R.S. Lloyd; School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom; email: rlloyd@cardiffmet.ac.uk","","Human Kinetics Publishers Inc.","10566716","","JSRHE","31629336","English","J. Sport Rehabil.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85093081381" "Uthmann T.; Dauscher P.","Uthmann, Thomas (6602680484); Dauscher, Peter (6507482723)","6602680484; 6507482723","Analysis of motor control and behavior in multi agent systems by means of artificial neural networks","2005","Clinical Biomechanics","20","2","","119","125","6","6","10.1016/j.clinbiomech.2004.04.007","https://www.scopus.com/inward/record.uri?eid=2-s2.0-11144330896&doi=10.1016%2fj.clinbiomech.2004.04.007&partnerID=40&md5=4060481e69440d5cbb75391b9da71fa0","Department of Computer Science, Johannes Gutenberg University, Mainz, Germany","Uthmann T., Department of Computer Science, Johannes Gutenberg University, Mainz, Germany; Dauscher P., Department of Computer Science, Johannes Gutenberg University, Mainz, Germany","This article gives a short introduction to Self-Organizing Maps, a particular form of Artificial Neural Networks and shows by some examples, how these approaches can be used in order to analyze and visualize time series data originating from complex systems. The methods shown in this article have originally been developed for the analysis of RoboCup robot soccer games, a special kind of so-called Multi Agent Systems. Although this application has no direct connection to biomechanics, the examples shown here may give an impression of the abilities of Neural Networks in the field of Time Series Analysis in general. Because of the abstractness of the methods, it appears to be very likely that they can easily be adapted to Time Series Analysis problems within the biomechanics context. © 2004 Elsevier Ltd. All rights reserved.","Multi Agent Systems; Neural networks; RoboCup; Self-Organizing Maps; Time series analysis","Biomechanics; Data reduction; Large scale systems; Neural networks; Problem solving; Time series analysis; Motor control; Soccer; analytic method; artificial neural network; biomechanics; computer program; locomotion; mathematical analysis; motor control; priority journal; review; time series analysis; Multi agent systems","Boll M., Analyse Von Verhaltensprozessen Mit Hilfe Neuronaler Netze, (1999); Fritzke B., A growing neural gas network learns topologies, Advances in Neural Information Processing Systems, 7, pp. 625-632, (1995); Hawlitzky M., Untersuchungen Zu Dynamischen Enveiterungen As Kohonen-Karten, (2001); Hopfield J., Neural networks and physical systems with emergent collective computational abilities, Proc. Nat. Acad. Sci. USA, 79, pp. 2554-2558, (1982); Kohonen T., Self-organized formation of topologically correct feature maps, Biol. Cybern., 43, pp. 59-69, (1982); Kohonen T., Self-Organizing Maps, (1995); Perl J., Artificial neural networks in sports: New concepts and approaches, Int. J. Perform. Anal. Sport, (2001); Ritter H., Martinetz T., Schulten K., Neural Computation and Self-Organizing Maps: An Introduction, (1992); Rumelhart D., McClelland J., Parallel Distributed Processing, (1986); Wunstel M., Polani D., Uthmann T., Perl J., Behavior classification with self-organizing maps, RoboCup 2000. LNAI, 2019, pp. 108-118, (2001)","P. Dauscher; Department of Computer Science, Johannes Gutenberg University, Mainz, Germany; email: dauscher@informatik.uni-mainz.de","","Elsevier Ltd","02680033","","CLBIE","15621314","English","Clin. Biomech.","Article","Final","","Scopus","2-s2.0-11144330896" "Wright M.; Chesterton P.; Wijnbergen M.; O'Rourke A.; Macpherson T.","Wright, Matthew (56594236400); Chesterton, Paul (57192869471); Wijnbergen, Mark (57194473193); O'Rourke, Adrian (57194899354); Macpherson, Tom (56562746400)","56594236400; 57192869471; 57194473193; 57194899354; 56562746400","The Effect of a Simulated Soccer Match on Anterior Cruciate Ligament Injury Risk Factors","2017","International Journal of Sports Medicine","38","8","","620","626","6","5","10.1055/s-0043-109238","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020301636&doi=10.1055%2fs-0043-109238&partnerID=40&md5=d8364421d40d5df885a08eb89719ba2e","Sport and Wellbeing Olympia Building, Stude't and Library Services, Teesside University, Middlesbrough, TS1 3BX, United Kingdom; Sport and Exercise, School of Social Sciences, Business and Law, Teesside University, Middlesbrough, United Kingdom","Wright M., Sport and Wellbeing Olympia Building, Stude't and Library Services, Teesside University, Middlesbrough, TS1 3BX, United Kingdom; Chesterton P., Sport and Exercise, School of Social Sciences, Business and Law, Teesside University, Middlesbrough, United Kingdom; Wijnbergen M., Sport and Exercise, School of Social Sciences, Business and Law, Teesside University, Middlesbrough, United Kingdom; O'Rourke A., Sport and Wellbeing Olympia Building, Stude't and Library Services, Teesside University, Middlesbrough, TS1 3BX, United Kingdom; Macpherson T., Sport and Exercise, School of Social Sciences, Business and Law, Teesside University, Middlesbrough, United Kingdom","To investigate the effect of within match fatigue on knee kinematics and jump kinetics in girls' soccer players, a quasi-experiment time series design was employed collecting data before, after and at 15-min intervals during a 90-min simulated soccer match. 15 girl players (age 13.1±1.4 years) performed a counter movement jump and a single-leg drop jump. Mean concentric force and flight time to contraction time ratio were derived from the counter movement jump. Knee valgus and flexion angles were calculated during the single-leg drop from 3-dimensional motion capture. Subjective ratings of perceived exertion (RPE) and readiness were collected at each time series. Small to large increases in RPE and reductions in readiness were observed throughout the match from baseline. Moderate to large improvements in mean concentric force were shown at 15, 75 and 90-min when compared to baseline. Flight time to contraction time ratio increased moderately at 15 min. Changes in kinematics were typically trivial or unclear however, small increases in knee valgus were shown after 30 min compared to baseline. Subjective measures may provide useful information to understand the physical response of young players to match play. © Georg Thieme Verlag KG Stuttgart · New York.","adolescents; fatigue; injury prevention; knee joint; RPE","Adolescent; Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Female; Humans; Knee Joint; Muscle Fatigue; Plyometric Exercise; Risk Factors; Soccer; adolescent; anterior cruciate ligament injury; biomechanics; female; human; knee; muscle fatigue; physiology; plyometrics; risk factor; soccer","Batterham A.M., Hopkins W.G., Making meaningful inferences about magnitudes, Int J Sports Physiol Perform, 1, pp. 50-57, (2006); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Bonnard M., Sirin A.V., Oddsson L., Thorstensson A., Different strategies to compensate for the effects of fatigue revealed by neuromuscular adaptation processes in humans, Neurosci Lett, 166, pp. 101-105, (1994); Borg E., Borg G., A comparison of AME and CR100 for scaling perceived exertion, Acta Psychol (Amst), 109, pp. 157-175, (2002); Borotikar B.S., Newcomer R., Koppes R., Mclean S.G., Combined effects of fatigue and decision making on female lower limb landing postures: Central and peripheral contributions to ACL injury risk, Clin Biomech, 23, pp. 81-92, (2008); Byrne C., Eston R., The effect of exercise-induced muscle damage on isometric and dynamic knee extensor strength and vertical jump performance, J Sports Sci, 20, pp. 417-425, (2010); Chappell J.D., Herman D.C., Knight B.S., Kirkendall D.T., Garrett W.E., Yu B., Effect of fatigue on knee kinetics and kinematics in stop-jump tasks, Am J Sports Med, 33, pp. 1022-1029, (2005); Cormack S.J., Newton R.U., McGuigan M.R., Doyle T.L.A., Reliability of measures obtained during single and repeated countermovement jumps, Int J Sports Physiol Perform, 3, pp. 131-144, (2008); De Ste Croix M.B.A., Priestley A.M., Lloyd R.S., Oliver J.L., ACL injury risk in elite female youth soccer: Changes in neuromuscular control of the knee following soccer-specific fatigue, Scand J Med Sci Sports, 25, pp. e531-e538, (2015); Dickin D.C., Johann E., Wang H., Popp J.K., Combined effects of drop height and fatigue on landing mechanics in active females, J Appl Biomech, 31, pp. 237-243, (2015); Dingenen B., Malfait B., Nijs S., Peers K.H.E., Vereecken S., Verschueren S.M.P., Staes F.F., Can two-dimensional video analysis during single-leg drop vertical jumps help identify non-contact knee injury risk? A one-year prospective study, Clin Biomech, 30, pp. 781-787, (2015); Fagenbaum R., Darling W.G., Jump landing strategies in male and female college athletes and the implications of such strategies for anterior cruciate ligament injury, Am J Sports Med, 31, pp. 233-240, (2003); Harriss D., Atkinson G., Ethical standards in sport and exercise science research: 2016 Update, Int J Sports Med, 36, pp. 1121-1124, (2015); Hewett T.E., Ford K.R., Hoogenboom B.J., Myer G.D., Understanding and preventing acl injuries: Current biomechanical and epidemiologic considerations - Update 2010, N Am J Sports Phys Ther, 5, pp. 234-251, (2010); Hewett T.E., Myer G.D., Ford K.R., Slauterbeck J.R., Preparticipation physical examination using a box drop vertical jump test in young athletes: The effects of puberty and sex, Clin J Sport Med, 16, pp. 298-304, (2006); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., Mclean S.G., Van Den Bogert A.J., Patern M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict Anterior Cruciate Ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Hopkins W.G., Marshall S.W., Batterham A.M., Hanin J., Progressive statistics for studies in sports medicine and exercise science, Med Sci Sports Exerc, 41, pp. 3-13, (2009); Krosshaug T., Nakamae A., Boden B.P., Engebretsen L., Smith G., Slauterbeck J.R., Hewett T.E., Bahr R., Mechanisms of anterior cruciate ligament injury in basketball: Video Analysis of 39 Cases, Am J Sports Med, 35, pp. 359-367, (2006); Krustrup P., Zebis M., Jensen J.M., Mohr M., Game-induced fatigue patterns in elite female soccer, J Strength Cond Res, 24, pp. 437-441, (2010); Lovell R., Knapper B., Small K., Physiological responses to SAFT90: A new soccer-specific match simulation, Coach Sports Sci, 2, pp. 5-8, (2008); Lovell R., Midgley A., Barrett S., Carter D., Small K., Effects of different half-time strategies on second half soccer-specific speed, power and dynamic strength, Scand J Med Sci Sports, 23, pp. 105-113, (2011); Mclaren S.J., Graham M., Spears I.R., Weston M., The sensitivity of differential ratings of perceived exertion as measures of internal load, Int J Sports Physiol Perform, 11, pp. 404-406, (2016); Mclaren S.J., Smith A., Spears I.R., Weston M., A detailed quantification of differential ratings of perceived exertion during team-sport training, J Sci Med Sport, pp. 1-6, (2016); Mclean S.G., Fellin R.E., Felin R.E., Suedekum N., Calabrese G., Passerallo A., Joy S., Impact of fatigue on gender-based high-risk landing strategies, Med Sci Sports Exerc, 39, pp. 502-514, (2007); Mclean S.G., Samorezov J.E., Fatigue-induced ACL injury risk stems from a degradation in central control, Med Sci Sports Exerc, 41, pp. 1661-1672, (2009); Munro A., Herrington L., Carolan M., Reliability of 2-dimensional video assessment of frontal-plane dynamic knee valgus during common athletic screening tasks, J Sport Rehabil, 21, pp. 7-11, (2012); Prodromos C.C., Han Y., Rogowski J., Joyce B., Shi K., A meta-analysis of the incidence of anterior cruciate ligament tears as a function of gender, sport, and a knee injury-reduction regimen, Arthroscopy, 23, (2007); Quatman C.E., Kiapour A., Myer G.D., Ford K.R., Demetropoulos C.K., Goel V.K., Hewett T.E., Cartilage Pressure distributions provide a footprint to define female Anterior Cruciate Ligament injury mechanisms, Am J Sports Med, 39, pp. 1706-1713, (2011); Quatman C.E., Quatman-Yates C.C., Hewett T.E.A., Plane Explanation of Anterior Cruciate Ligament injury mechanisms, Sports Med, 40, pp. 729-746, (2010); Rahnama N., Reilly T., Lees A., Injury risk associated with playing actions during competitive soccer, Br J Sport Med, 36, pp. 354-359, (2002); Renstrom P., Ljungqvist A., Arendt E., Beynnon B., Fukubayashi T., Garrett W., Georgoulis T., Hewett T.E., Johnson R., Krosshaug T., Mandelbaum B., Micheli L., Myklebust G., Roos E., Roos H., Schamasch P., Shultz S., Werner S., Wojtys E., Engebretsen L., Non-contact ACL injuries in female athletes: An International Olympic Committee current concepts statement, Br J Sport Med, 42, pp. 394-412, (2008); Robineau J., Jouaux T., Lacroix M., Babault N., Neuromuscular fatigue induced by a 90-minute soccer game modeling, J Strength Cond Res, 26, pp. 555-562, (2012); Russell K.A., Palmieri R.M., Zinder S.M., Ingersoll C.D., Sex differences in valgus knee angle during a single-leg drop jump, J Athl Train, 41, pp. 166-171, (2006); Saw A.E., Main L.C., Gastin P.B., Monitoring the athlete training response: Subjective self-reported measures trump commonly used objective measures: A systematic review, Br J Sport Med, pp. 1-13, (2015); Taylor J.L., Gandevia S.C., A comparison of central aspects of fatigue in submaximal and maximal voluntary contractions, J Appl Physiol, 104, pp. 542-550, (2007); Twist C., Highton J., Monitoring fatigue and recovery in rugby league players, Int J Sports Physiol Perform, 8, pp. 467-474, (2013); Willson J.D., Ireland M.L., Davis I., Core strength and lower extremity alignment during single leg squats, Med Sci Sports Exerc, 38, pp. 945-952, (2006)","M. Wright; Sport and Wellbeing Olympia Building, Stude't and Library Services, Teesside University, Middlesbrough, TS1 3BX, United Kingdom; email: m.wright@tees.ac.uk","","Georg Thieme Verlag","01724622","","IJSMD","28575923","English","Int. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85020301636" "Rites A.; Viana D.; Merino-Muñoz P.; Miarka B.; Aedomuñoz E.; Peréz-Contreras J.; Salerno V.P.","Rites, Alex (57218565525); Viana, Diego (58035675300); Merino-Muñoz, Pablo (57221328367); Miarka, Bianca (37081636300); Aedomuñoz, Esteban (57795103300); Peréz-Contreras, Jorge (57221334278); Salerno, Verônica Pinto (24071999900)","57218565525; 58035675300; 57221328367; 37081636300; 57795103300; 57221334278; 24071999900","Do contextual factors, tournament level, and location affect external match load in elite Brazilian youth soccer players?","2022","Journal of Physical Education and Sport","22","11","366","2898","2903","5","4","10.7752/jpes.2022.11366","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85145056700&doi=10.7752%2fjpes.2022.11366&partnerID=40&md5=16164d45049b28d13c2c296b2ab0eab8","Postgraduate Program in Physical Education, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; Núcleo de Investigación en Ciencias de la Motricidad Humana, Universidad Adventista de Chile, Chillán, Chile; Escuela de Ciencias de la Actividad Física, el Deporte y la Salud, Facultad de Ciencias Médicas, Universidad de Santiago de Chile, Chile; Escuela de Ciencias del Deporte, Facultad de Salud, Universidad Santo Tómas, Chile","Rites A., Postgraduate Program in Physical Education, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil, Núcleo de Investigación en Ciencias de la Motricidad Humana, Universidad Adventista de Chile, Chillán, Chile; Viana D., Núcleo de Investigación en Ciencias de la Motricidad Humana, Universidad Adventista de Chile, Chillán, Chile; Merino-Muñoz P., Postgraduate Program in Physical Education, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil, Núcleo de Investigación en Ciencias de la Motricidad Humana, Universidad Adventista de Chile, Chillán, Chile; Miarka B., Postgraduate Program in Physical Education, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; Aedomuñoz E., Postgraduate Program in Physical Education, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil, Escuela de Ciencias de la Actividad Física, el Deporte y la Salud, Facultad de Ciencias Médicas, Universidad de Santiago de Chile, Chile; Peréz-Contreras J., Escuela de Ciencias del Deporte, Facultad de Salud, Universidad Santo Tómas, Chile; Salerno V.P., Postgraduate Program in Physical Education, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil","Objective: The present study compares the external load of a Brazilian first-division U-20 team match between the tournament level (regional vs. national) and the match's location (home or away). Methods: Thirty-five athletes from a U-20 team belonging to the same Brazilian first-division team participated in the study (age=19.1 ±0.58 years; body mass=70.1 ±7.64 kg; height=176.1 ±6.28 cm). Twenty-eight games belonging to the national championship (14 Brasileirão matches) and regional championship (14 Carioca state matches) were analyzed, following these external load variables through a global positioning system: Total distance traveled (TD), player load (PL), distance traveled >20 km/h, distance traveled >25km/h, the number of accelerations and decelerations > 2 m/s2 (AD2) and >3 m/s2 (AD3) and the number of Repeat High-Intensity Efforts (RHIE). A two-factor ANOVA compared the tournament level and the match’s location, and the effect size (ES) was verified, considering p≤0.05. Results: Significant differences were found in TD (F=3.42 and ES=0.7), PL (F=4.2 and ES=0.8), D20 (F=2.87 and ES=0.67), AD3 (F=6.49 and ES=0.97), RHIE (F=14.6 and ES=1.18) and in AD2 (F=10.1 and ES=1.24). No effects were found according to location or interaction effects (p>0.1). Conclusion: Findings indicated that the tournament type impacts the external match load - with higher effort values in the national tournament. The location did not affect the external load, but further studies are required to corroborate these results due to the lack of public presence because of the COVID-19 pandemic. The following data may be helpful for the coaching staff to consider this factor when planning and programming the training load concerning the tournament in which they are participating. © JPES.","Athletic Performance; Biomechanics; Football; Match Running performance; Physiology; Youth Sports","","Akyildiz Z., Clemente F. M., Senturk D., Gurol B., Yildiz M., Ocak Y., Gunay M., Investigation of the convergent validity and reliability of unit position differences of Catapult S5 GPS units in field conditions, Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, (2022); Aquino R., Carling C., Palucci Vieira L. H., Martins G., Jabor G., Machado J., Santiago P., Garganta J., Puggina E., Influence of Situational Variables, Team Formation, and Playing Position on MatchRunning Performance and Social Network Analysis in Brazilian Professional Soccer Players, Journal of Strength and Conditioning Research, 34, 3, pp. 808-817, (2020); Aquino R., Goncalves L. G., Galgaro M., Maria T. S., Rostaiser E., Pastor A., Nobari H., Garcia G. R., Viana M., Neto M., Match running performance in Brazilian professional soccer players: Comparisons between successful and unsuccessful teams, BMC Sports Science, Medicine and Rehabilitation, pp. 1-10, (2021); Augusto D., Brito J., Aquino R., Figueiredo P., Eiras F., Tannure M., Veiga B., Vasconcellos F., Contextual Variables Affect Running Performance in Professional Soccer Players: A Brief Report, Frontiers in Sports and Active Living, 3, (2021); Carling C., Wright C., Nelson L. J., Bradley P. S., Comment on “Performance analysis in football: A critical review and implications for future research, Journal of Sports Sciences, 32, 1, pp. 2-7, (2014); Dolci F., Hart N. H., Kilding A. E., Chivers P., Piggott B., Spiteri T., Physical and Energetic Demand of Soccer: A Brief Review, Strength & Conditioning Journal, 42, 3, pp. 70-77, (2020); Freire L. A., Brito M. A., Esteves N. S., Tannure M., Slimani M., Znazen H., Bragazzi N. L., Brito C. J., Soto D. A. S., Goncalves D., Miarka B., Running Performance of High-Level Soccer Player Positions Induces Significant Muscle Damage and Fatigue Up to 24 h Postgame, Frontiers in Psychology, 12, pp. 1-9, (2021); Freire L. D. A., Brito M. A., Munoz P. M., Perez D. I. V., Kohler H. C., Aedo-Munoz E. A., Slimani M., Brito C. J., Bragazzi N. L., Znazen H., Miarka B., Match Running Performance of Brazilian Professional Soccer Players according to Tournament Types, Montenegrin Journal of Sports Science and Medicine, 11, 1, pp. 53-58, (2022); Freire L., Merino-munoz P., Aedo-munoz E., Soto A. S., Brito C. J., Miarka B., Soccer pacing strategy: Chronological intra-comparison of the same soccer athletes, disputing with the same opponent during the same year, Journal of Physical Education and Sport, 22, 5, pp. 1333-1339, (2022); Freire L., Tannure M., Goncalves D., Aedo-Munoz E., Perez D. I. V., Brito C. J., Miarka B., Correlation between creatine kinase and match load in soccer: A case report, Journal of Physical Education and Sport, 20, 3, pp. 1279-1283, (2020); Fowler P., Duffield R., Vaile J., Effects of simulated domestic and international air travel on sleep, performance, and recovery for team sports, Scandinavian Journal of Medicine and Science in Sports, 25, 3, pp. 441-451, (2015); Gastin P. B., Tangalos C., Torres L., Robertson S., Match running performance and skill execution improves with age but not the number of disposals in young Australian footballers, J Sports Sci, 35, 24, pp. 2397-2404, (2017); Gimenez J. V, Del-Coso J., Leicht A. S., Gomez M. A., Comparison of the movement patterns between small- and large-sided game training and competition in professional soccer players, J Sports Med Phys Fitness, 58, 10, pp. 1383-1389, (2018); Goncalves L. G. C., Clemente F. M., Vieira L. H. P., Bedo B., Puggina E. F., Moura F., Mesquita F., Santiago P. R. P., Almeida R., Aquino R., Effects of match location, quality of opposition, match outcome, and playing position on load parameters and players’ prominence during official matches in professional soccer players, Human Movement, 22, 3, pp. 35-44, (2021); Haycraft J. A. Z., Kovalchik S., Pyne D. B., Robertson S., Relationships Between Physical Testing and Match Activity Profiles Across the Australian Football League Participation Pathway, Int J Sports Physiol Perform, 14, 6, pp. 771-778, (2019); Hopkins W. G., Marshall S. W., Batterham A. M., Hanin J., Progressive statistics for studies in sports medicine and exercise science, Medicine and Science in Sports and Exercise, 41, 1, pp. 3-12, (2009); Ingebrigtsen J., Dalen T., Hjelde G. H., Drust B., Wisloff U., Acceleration and sprint profiles of a professional elite football team in match play, Eur J Sport Sci, 15, 2, pp. 101-110, (2015); Impellizzeri F. M., Marcora S. M., Coutts A. J., Internal and External Training Load: 15 Years On Training Load: Internal and External Load Theoretical Framework: The Training Process, International Journal of Sports Physiology and Performance, 14, 2, pp. 270-273, (2018); Johnston R. J., Watsford M. L., Kelly S. J., Pine M. J., Spurrs R. W., Validity and Interunit Reliability of 10 Hz and 15 Hz GPS Units for Assessing Athlete Movement Demands, Journal of Strength and Conditioning Research, 28, 6, pp. 1649-1655, (2014); Kempton T., Sirotic A. C., Coutts A. J., An integrated analysis of match-related fatigue in professional rugby league, J Sports Sci, 33, 1, pp. 39-47, (2015); Kobal R., Loturco I., Gil S., Cal Abad C. C., Cuniyochi R., Barroso R., Tricoli V., Comparison ofphysical performance among Brazilian elite soccer players of different age categories, J Sports Med Phys Fitness, 56, 4, pp. 376-382, (2016); Link D., De Lorenzo M. F., Seasonal pacing - Match importance affects activity in professional soccer, PLoS ONE, 11, 6, pp. 1-10, (2016); Malone J. J., Di Michele R., Morgans R., Burgess D., Morton J. P., Drust B., Seasonal trainingload quantification in elite English Premier League soccer players, International Journal of Sports Physiology and Performance, 10, 4, pp. 489-497, (2015); Morin J. B., Le Mat Y., Osgnach C., Barnabo A., Pilati A., Samozino P., di Prampero P. E., Individual acceleration-speed profile in-situ: A proof of concept in professional football players, J Biomech, 123, (2021); Naser N., Ali A., A descriptive-comparative study of performance characteristics in futsal players of different levels, J Sports Sci, 34, 18, pp. 1707-1715, (2016); Nikolaidis P. T., Ingebrigtsen J., Jeffreys I., The effects of anthropometry and leg muscle power on drive and transition phase of acceleration: A longitudinal study on young soccer players, J Sports Med Phys Fitness, 56, 10, pp. 1156-1162, (2016); Palucci Vieira L. H., Aquino R., Lago-Penas C., Munhoz Martins G. H., Puggina E. F., Barbieri F. A., Running Performance in Brazilian Professional Football Players During a Congested Match Schedule, J Strength Cond Res, 32, 2, pp. 313-325, (2018); Palucci Vieira L. H., Carling C., Barbieri F. A., Aquino R., Santiago P. R. P., Match Running Performance in Young Soccer Players: A Systematic Review, Sports Medicine, 49, 2, pp. 289-318, (2019); Perez-contreras J., Elgueta-moya S., Villaseca-vicuna R., Aedo-munoz E., Miarka B., Merino-munoz P., Diferencias de carga interna y externa entre futbolistas adultos y juveniles en un partido amistoso, Archivos de Medicina Del Deporte, 39, 2, pp. 89-94, (2022); Reinhardt L., Schwesig R., Lauenroth A., Schulze S., Kurz E., Enhanced sprint performance analysis in soccer: New insights from a GPS-based tracking system, PLoS One, 14, 5, (2019); Sangnier S., Cotte T., Brachet O., Coquart J., Tourny C., Planning Training Workload in Football Using Small-Sided Games’ Density, J Strength Cond Res, 33, 10, pp. 2801-2811, (2019); Silva R., Camoes M., Barbosa A., Badicu G., Nobari H., Bernardo A., Carvalho S. A., Sant'Ana T., Lima R., Bezerra P., Clemente F. M., Relationship between training load and match running performance in men’s soccer, Journal of Men’s Health, 17, 4, pp. 92-98, (2021); Shearer D. A., Sparkes W., Northeast J., Cunningham D. J., Cook C. J., Kilduff L. P., Measuring recovery: An adapted Brief Assessment of Mood (BAM+) compared to biochemical and power output alterations, J Sci Med Sport, 20, 5, pp. 512-517, (2017); Trewin J., Meylan C., Varley M. C., Cronin J., The match-to-match variation of match-running in elite female soccer, J Sci Med Sport, 21, 2, pp. 196-201, (2018); Wasserstein R. L., Schirm A. L., Lazar N. A., Moving to a World Beyond “p < 0.05, American Statistician, 73, sup1, pp. 1-19, (2019); Weston M., Training load monitoring in elite English soccer: A comparison of practices and perceptions between coaches and practitioners, Science and Medicine in Football, 2, 3, pp. 216-224, (2018)","V.P. Salerno; Postgraduate Program in Physical Education, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; email: vpsalerno@yahoo.com.br","","Editura Universitatii din Pitesti","22478051","","","","English","J. Phys. Educ. Sport","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85145056700" "Tereso D.; Paulo R.; Petrica J.; Duarte-Mendes P.; Gamonales J.M.; Ibáñez S.J.","Tereso, Diogo (57226392413); Paulo, Rui (56950584500); Petrica, João (55777717400); Duarte-Mendes, Pedro (56879871000); Gamonales, José M. (57202511630); Ibáñez, Sergio J. (16031388100)","57226392413; 56950584500; 55777717400; 56879871000; 57202511630; 16031388100","Assessment of body composition, lower limbs power, and anaerobic power of senior soccer players in Portugal: Differences according to the competitive level","2021","International Journal of Environmental Research and Public Health","18","15","8069","","","","5","10.3390/ijerph18158069","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85111415118&doi=10.3390%2fijerph18158069&partnerID=40&md5=08dce930a11dbd2e7b64c8ce9e9ba89e","Department of Sport and Well-Being, Polytechnic Institute of Castelo Branco, Castelo Branco, 6000-084, Portugal; Sport, Health and Exercise Research Unit (SHERU), Polytechnic Institute of Castelo Branco, Castelo Branco, 6000-266, Portugal; Research in Education and Community Intervention (RECI), Viseu, 3515-776, Portugal; Research Group in Optimization of Training and Sport Performance (GOERD), Faculty of Sports Sciences, University of Extremadura, Caceres, 10003, Spain","Tereso D., Department of Sport and Well-Being, Polytechnic Institute of Castelo Branco, Castelo Branco, 6000-084, Portugal; Paulo R., Department of Sport and Well-Being, Polytechnic Institute of Castelo Branco, Castelo Branco, 6000-084, Portugal, Sport, Health and Exercise Research Unit (SHERU), Polytechnic Institute of Castelo Branco, Castelo Branco, 6000-266, Portugal, Research in Education and Community Intervention (RECI), Viseu, 3515-776, Portugal; Petrica J., Department of Sport and Well-Being, Polytechnic Institute of Castelo Branco, Castelo Branco, 6000-084, Portugal, Sport, Health and Exercise Research Unit (SHERU), Polytechnic Institute of Castelo Branco, Castelo Branco, 6000-266, Portugal; Duarte-Mendes P., Department of Sport and Well-Being, Polytechnic Institute of Castelo Branco, Castelo Branco, 6000-084, Portugal, Sport, Health and Exercise Research Unit (SHERU), Polytechnic Institute of Castelo Branco, Castelo Branco, 6000-266, Portugal, Research in Education and Community Intervention (RECI), Viseu, 3515-776, Portugal; Gamonales J.M., Research Group in Optimization of Training and Sport Performance (GOERD), Faculty of Sports Sciences, University of Extremadura, Caceres, 10003, Spain; Ibáñez S.J., Research Group in Optimization of Training and Sport Performance (GOERD), Faculty of Sports Sciences, University of Extremadura, Caceres, 10003, Spain","Background. During a soccer game, the most diversified stimuli occur all the time, the physical condition level plays a determinant role, and there may be variations according to the competitive level. In this sense, the present study aimed to verify differences in body composition, lower limbs power, and anaerobic power, comparing senior soccer players of different competitive levels. Methods. Participants were 81 players belonging to six soccer teams, aged between 18 and 35 years, with a mean age of 23.14 ± 4.23 years, who were divided into three distinct competitive levels: Elite, Sub-Elite and Non-Elite. The players performed bioimpedance evaluations on a tetrapolarInbody270 scale (body composition), the Countermovement Jump (CMJ) through the ChronoJump (lower limbs power), and Running Anaerobic Sprint Test (RAST) (anaerobic power). Results. Based on the competitive level analysis, we verified that the players present body composition values similar to each other regardless of the competitive level in which they play. Concerning the performance evaluations, we verified that the elite players present higher values of highest jump (p = 0.012; d = 0.76, moderate; and p = 0.022; d = 0.71, moderate) and maximum force produced (p = 0.05; d = 0.64, moderate; and p = 0.002; d = 1.00, moderate), together with higher values of anaerobic power (p < 0.001; d = 2.43, very large; and p < 0.001; d = 2.22, very large), compared to the others. Conclusions. We can thus conclude that there is a homogeneity regarding the body composition of soccer players, regardless of their competitive level; in turn, elite players show better performance indicators in all variables. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.","Anaerobic power; Body composition; Competitive level; Lower limbs power; Soccer","Adolescent; Adult; Anaerobiosis; Athletic Performance; Body Composition; Exercise Test; Humans; Lower Extremity; Portugal; Soccer; Young Adult; Portugal; biomechanics; body condition; limb; performance assessment; physical activity; sport; adult; article; body composition; controlled study; human; lower limb; performance indicator; Portugal; running; soccer player; young adult; adolescent; anaerobic growth; athletic performance; body composition; exercise test; lower limb; Portugal; soccer","Gomez-Carmona C.D., Gamonales J.M., Pino-Ortega J., Ibanez S.J., Comparative Analysis of Load Profile between Small-Sided Games and Official Matches in Youth Soccer Players, Sports, 12, (2018); Mattos D.M., Jabur M.N., Capacidade aeróbia e composição corporal nas diferentes posições do futebol, Lect. Educ. Física Deport. Buenos Aires, (2008); Ribeiro F., Bastos E., Bastos-Silva V., Araujo G., Caracteristicas por posição da potência anaeróbia, capacidade aeróbia e composição corporal em futebolista de alto rendimento, Rev. Norte-Min. Educ. Física, 5, pp. 20-29, (2015); Garganta J., Futebol e Ciência, Ciência e Futebol. Lect. Educ. Física Deport. Rev. Digit, 7, (2001); Arnason A., Sigurdsson S.B., Gudmundsson A., Holme I., Engebretsen L., Bahr R., Physical Fitness, Injuries, and Team Performance in Soccer, Med. Sci. Sports Exerc, 36, pp. 278-285, (2004); Petreca D.R., Junior E.D., Becker L.E., Comparação da Composição Corporal de Atletas Profissionais de Futsal e Futebol de Campo, Rev. Bras. Futsal Futeb, 9, pp. 180-189, (2017); Pinto M.R., Azevedo V.B., Navarro F., Alterações da composição corporal de jogadores profissionais de futebol do Rio Preto Esporte Clube, Rev. Bras. Nutr. Esportiva, 1, pp. 17-24, (2007); Carvalho A.C., Estudo Comparativo do Salto Vertical Entre Desportistas especializados em Saltos e Não-Desportistas, de Ambos os Géneros; Coelho D.B., Coelho L.G., Braga M.L., Paolucci A., Cabido C.E., Junior J.B., Mendes T.T., Prado L.S., Garcia E.S., Correlação entre o desempenho de jogadores de futebol no teste de sprint de 30m e no teste de salto vertical, Motriz, 17, pp. 63-70, (2011); Gomes M.M., Pereira G., Freitas P.B., Barela J.A., Características cinemáticas e cinéticas do salto vertical: Comparação entre jogadores de futebol e basquetebol Características cinemáticas e cinéticas do salto vertical: Comparação entre jogadores de futebol e basquetebol, Rev. Bras. Cineantropometria Desempenho Hum, 11, pp. 392-399, (2009); McMillan K., Helgerud J., Macdonald R., Hoff J., Physiological adaptations to soccer specific endurance training in professional youth soccer players, Br. J. Sports Med, 39, pp. 273-277, (2005); Lago-Penas C., Rey E., Lago-Ballesteros J., The Influence of Effective Playing Time on Physical Demands of Elite Soccer Players, Open Sport Sci. J, 5, pp. 188-192, (2012); Bangsbo J., The physiology of soccer-with special reference to intense intermittent exercise, Acta Physiol. (Print Ed.), 151, (1994); Ekblom B., Applied Physiology of Soccer, Sport Med, 3, pp. 50-60, (1986); Reilly T., Bangsbo J., Franks A., Anthropometric and physiological predispositions for elite soccer, J. Sports Sci, 18, pp. 669-683, (2000); Rouquayrol M.Z., Epídemiologia e Saúde, (1994); Diehl A.A., Tatim D.C., Pesquisa em Ciências Sociais Aplicadas: Métodos e Técnicas, (2004); Jimenez M., Alvero-Cruz J.R., Solla J., Garcia-Bastida J., Garcia-Coll V., Rivilla I., Ruiz E., Garcia-Romero J., Carnero E.A., Clemente-Suarez V.J., Competition Seriousness and Competition Level Modulate Testosterone and Cortisol Responses in Soccer Players, Int. J. Environ. Res. Public Health, 17, (2020); Miller R.M., Chambers T.L., Burns S.P., Validating InBody® 570 Multi-frequency Bioelectrical Impedance Analyzer versus DXA for Body Fat Percentage Analysis, J. Exerc. Physiol, 19, pp. 71-78, (2016); Bosco C., Luhtanen P., Komi P., A Simple Method for Measurement of Mechanical Power in Jumping Carmelo, Eur. J. Appl. Physiol. Occup. Physiol, 50, pp. 273-282, (1983); Markovic G., Dizdar D., Jukic I., Cardinale M., Reliability and Factorial Validity of Squat and Countermovement Jump Tests, J. Strength Cond. Res, 18, pp. 551-555, (2004); Zagatto A.M., Beck W.R., Gobatto C.A., Validity of the Running Anaerobic Sprint Test for Assessing Anaerobic Power and Predicting Short-Distance Performances, J. Strength Cond. 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Perform, 8, pp. 48-156, (2013); Santos J.A., Estudo Comparativo, Fisiologico, Antropometrico e Motor entre Futebolistas de Diferente Nivel Competitivo, Rev. Paul. Educ. Física, 13, pp. 146-159, (1999); Nobre G.C., Fernandes W.L., Amorim M.A., Pereira A.E., Melo G.N., Freitas R.P., Bandeira P.F., Análise comparativa de variáveis antropométricas e composição corporal de atletas profissionais de futebol de primeira e segunda divisão, Lect. Educ. Física Deport. Rev. Digit. Buenos Aires, (2009); Slentz C.A., Duscha B.D., Johnson J.L., Ketchum K., Aiken L.B., Samsa G.P., Houmard J.A., Bales C.W., Kraus W.E., Effects of the Amount of Exercise on Body Weight, Body Composition, and Measures of Central Obesity: STRRIDE—A Randomized Controlled Study, Arch. Intern. Med, 164, pp. 31-39, (2004); Ribeiro R.S., Dias D.F., Claudino J.G., Goncalves R., Análise do somatotipo e condicionamento físico entre atletas de futebol de campo sub-20, Motriz, 13, pp. 280-287, (2007); Spigolon L.M., Borin J.P., Leite G.S., Padovani R.P., Padovani C.R., Potência Anaeróbia em Atletas de Futebol de Campo: Diferenças entre Categorias, Coleção Pesqui Educ. Física, 6, pp. 421-428, (2007); Pellegrinotti I.L., Daniel J.F., Cielo F.B., Cavaglieri C.R., Neto J.B., Montebelo M.I., Cesar M.C., Análise da Potência Anaeróbia de Jogadores de Futebol de três categorias, por meio do “Teste de Velocidade para Potência Anaeróbia” (TVPA) do Running Based Anaerobic Sprint Test (RAST), Arq. Mov, 4, pp. 4-15, (2008); Moro V.L., Fuke K., Cancian L., Matheus S.C., Moro A.R., Anaerobic capacity in soccer players from diferent competitive levels: Comparison of players in diferent field positions, J. Mot, 8, pp. 71-78, (2012); Alves A.L., Mendes T.T., Coelho D.B., Soncin R., Pereira E.R., Slimani-Garcia E., Análise das variáveis anaeróbias e antropométricas entre futebolistas profissionais e juniores, Lect. Educ. Física Deport. Rev. Digit. Buenos Aires, (2010)","D. Tereso; Department of Sport and Well-Being, Polytechnic Institute of Castelo Branco, Castelo Branco, 6000-084, Portugal; email: diogotereso@hotmail.com","","MDPI AG","16617827","","","34360362","English","Int. J. Environ. Res. Public Health","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85111415118" "Lucas L.A.; England B.S.; Mason T.W.; Lanning C.R.; Miller T.M.; Morgan A.M.; Almonroeder T.G.","Lucas, Logan A. (57204441006); England, Benjamin S. (57204442460); Mason, Travis W. (57204438375); Lanning, Christopher R. (57204440420); Miller, Taylor M. (57204440509); Morgan, Alexander M. (56311955100); Almonroeder, Thomas Gus (55668374500)","57204441006; 57204442460; 57204438375; 57204440420; 57204440509; 56311955100; 55668374500","Decision making influences tibial impact accelerations during lateral cutting","2018","Journal of Applied Biomechanics","34","5","","414","418","4","5","10.1123/jab.2017-0397","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85055597409&doi=10.1123%2fjab.2017-0397&partnerID=40&md5=cdadc5c040507a54caa79d3f4a8ae79f","Physical Therapy Program, Rinker-Ross School of Health Sciences, Trine University, Fort Wayne, IN, United States; Department of Kinesiology, University of Wisconsin–Milwaukee, Milwaukee, WI, United States","Lucas L.A., Physical Therapy Program, Rinker-Ross School of Health Sciences, Trine University, Fort Wayne, IN, United States; England B.S., Physical Therapy Program, Rinker-Ross School of Health Sciences, Trine University, Fort Wayne, IN, United States; Mason T.W., Physical Therapy Program, Rinker-Ross School of Health Sciences, Trine University, Fort Wayne, IN, United States; Lanning C.R., Physical Therapy Program, Rinker-Ross School of Health Sciences, Trine University, Fort Wayne, IN, United States; Miller T.M., Physical Therapy Program, Rinker-Ross School of Health Sciences, Trine University, Fort Wayne, IN, United States; Morgan A.M., Department of Kinesiology, University of Wisconsin–Milwaukee, Milwaukee, WI, United States; Almonroeder T.G., Physical Therapy Program, Rinker-Ross School of Health Sciences, Trine University, Fort Wayne, IN, United States","Lower-extremity musculoskeletal injuries are common in sports such as basketball and soccer. Athletes competing in sports of this nature must maneuver in response to the actions of their teammates, opponents, etc. This limits their ability to preplan movements. The purpose of this study was to compare impact accelerations during preplanned versus unplanned lateral cutting. A total of 30 subjects (15 males and 15 females) performed preplanned and unplanned cuts while the authors analyzed impact accelerations using an accelerometer secured to their tibia. For the preplanned condition, subjects were aware of the movement to perform before initiating a trial. For the unplanned condition, subjects initiated their movement and then reacted to the illumination of one of 3 visual stimuli which dictated whether they would cut, land, or land-and-jump. A mixed-model analysis of variance with a between factor of sex (male and female) and a within factor of condition (preplanned and unplanned) was used to analyze the magnitude and variability of the impact accelerations for the cutting trials. Both males and females demonstrated higher impact accelerations (P = .01) and a trend toward greater intertrial variability (P = .07) for the unplanned cutting trials (vs preplanned cuts). Unplanned cutting may place greater demands on the musculoskeletal system. © 2018 Human Kinetics, Inc.","Anticipation; Biomechanics; Motor control; Sports injuries","Acceleration; Adolescent; Adult; Biomechanical Phenomena; Decision Making; Female; Humans; Male; Sports; Tibia; Biomechanics; Decision making; Musculoskeletal system; Sports; Sports medicine; Anticipation; Lower extremity; Mixed-model analysis; Motor control; Musculo-skeletal injuries; Sports injuries; Visual stimulus; acceleration; adult; Article; basketball; decision making; female; human; illumination; male; movement (physiology); normal human; soccer; tibia; acceleration; adolescent; biomechanics; physiology; sport; tibia; Acceleration","Eime R.M., Young J.A., Harvey J.T., Charity M.J., Payne W.R., A systematic review of the psychological and social benefits of participation in sport for adults: Informing development of a conceptual model of health through sport, Int J Behav Nutr Phys Act, 10, (2013); Eime R.M., Young J.A., Harvey J.T., Charity M.J., Payne W.R., A systematic review of the psychological and social benefits of participation in sport for children and adolescents: Informing development of a conceptual model of health through sport, Int J Behav Nutr Phys Act, 10, (2013); 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Schmidt R.A., Lee T.D., Motor Learning and Performance: From Principles to Application, (2014); Miller B.T., Clapp W.C., From vision to decision: The role of visual attention in elite sports performance, Eye Contact Lens, 37, 3, pp. 131-139, (2011); Almonroeder T.G., Garcia E., Kurt M., The effects of anticipation on the mechanics of the knee during single-leg cutting tasks: A systematic review, Int J Sports Phys Ther, 10, 7, pp. 918-928, (2015); Brown S.R., Brughelli M., Hume P.A., Knee mechanics during planned and un-planned sidestepping: A systematic review and meta-analysis, Sports Med, 44, 11, pp. 1573-1588, (2014); McLean S.G., Lipfert S.W., Van Den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, 6, pp. 1008-1016, (2004); McLean S.G., Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: Potential for injury in women, Med Sci Sports Exerc, 31, 7, pp. 959-968, (1999); Tegner Y., Lysholm J., Rating systems in the evaluation of knee ligament injuries, Clin Orthop Relat Res, 198, pp. 43-49, (1985); Schutte K.H., Seerden S., Venter R., Vanwanseele B., Influence of outdoor running fatigue and medial tibial stress syndrome on accelerometer-based loading and stability, Gait Posture, 59, pp. 222-228, (2018); Brophy R., Silvers H.J., Gonzales T., Mandelbaum B.R., Gender influences: The role of leg dominance in ACL injury among soccer players, Br J Sports Med, 44, 10, pp. 694-697, (2010); Ruedl G., Webhofer M., Helle K., Et al., Leg dominance is a risk factor for noncontact anterior cruciate ligament injuries in female recreational skiers, Am J Sports Med, 40, 6, pp. 1269-1273, (2012); Stensrud S., Myklebust G., Kristianslund E., Bahr R., Krosshaug T., Correlation between two-dimensional video analysis and subjective assessment in evaluating knee control among elite female team handball players, Br J Sports Med, 45, 7, pp. 589-595, (2011); Cohen J., Statistical Power Analysis for The Behavioral Sciences; Faul F., Erdfelder E., Lang A.G., Buchner A., G*Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences, Behav Res Methods, 39, 2, pp. 175-191, (2007); Meinerz C.M., Malloy P., Geiser C.F., Kipp K., Anticipatory effects on lower extremity neuromechanics during a cutting task, J Athl Train, 50, 9, pp. 905-913, (2015); Mornieux G., Gehring D., Furst P., Gollhofer A., Anticipatory postural adjustments during cutting manoeuvres in football and their consequences for knee injury risk, J Sports Sci, 32, 13, pp. 1255-1262, (2014); Elvin N.G., Elvin A.A., Arnoczky S.P., Correlation between ground reaction force and tibial acceleration in vertical jumping, J Appl Biomech, 23, 3, pp. 180-189, (2007); Wilkerson G.B., Simpson K.A., Clark R.A., Assessment and training of visuomotor reaction time for football injury prevention, J Sport Rehabil, 26, 1, pp. 26-34, (2017); Lee M.J.C., Lloyd D.G., Lay B.S., Bourke P.D., Alderson J.A., Effects of different visual stimuli on postures and knee moments during sidestepping, Med Sci Sports Exerc, 45, 9, pp. 1740-1748, (2013); Cortes N., Blount E., Ringleb S., Onate J.A., Soccer-specific video simulation for improving movement assessment, Sports Biomech, 10, 1, pp. 22-34, (2011); Kipp K., Brown T.N., McLean S.G., Palmieri-Smith R.M., Decision making and experience level influence frontal plane knee joint biomechanics during a cutting maneuver, J Appl Biomech, 29, 6, pp. 756-762, (2013); Sell T.C., Akins J.S., Opp A.R., Lephart S.M., Relationship between tibial acceleration and proximal anterior tibia shear force across increasing jump distance, J Appl Biomech, 30, 1, pp. 75-81, (2014)","T.G. Almonroeder; Physical Therapy Program, Rinker-Ross School of Health Sciences, Trine University, Fort Wayne, United States; email: almonroedert@trine.edu","","Human Kinetics Publishers Inc.","10658483","","JABOE","29809103","English","J. Appl. Biomech.","Article","Final","","Scopus","2-s2.0-85055597409" "Ortiz-Padilla V.E.; Ramírez-Moreno M.A.; Presbítero-Espinosa G.; Ramírez-Mendoza R.A.; Lozoya-Santos J.J.","Ortiz-Padilla, Vanessa E. (57638488000); Ramírez-Moreno, Mauricio A. (56809262000); Presbítero-Espinosa, Gerardo (36976051600); Ramírez-Mendoza, Ricardo A. (6506830381); Lozoya-Santos, Jorge de J. (35146305700)","57638488000; 56809262000; 36976051600; 6506830381; 35146305700","Survey on Video-Based Biomechanics and Biometry Tools for Fracture and Injury Assessment in Sports","2022","Applied Sciences (Switzerland)","12","8","3981","","","","5","10.3390/app12083981","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85128868835&doi=10.3390%2fapp12083981&partnerID=40&md5=382f119c65ac4c88bb0557807bc0c937","Mechatronics Department, School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Tecnológico, Monterrey, 64849, Mexico","Ortiz-Padilla V.E., Mechatronics Department, School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Tecnológico, Monterrey, 64849, Mexico; Ramírez-Moreno M.A., Mechatronics Department, School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Tecnológico, Monterrey, 64849, Mexico; Presbítero-Espinosa G., Mechatronics Department, School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Tecnológico, Monterrey, 64849, Mexico; Ramírez-Mendoza R.A., Mechatronics Department, School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Tecnológico, Monterrey, 64849, Mexico; Lozoya-Santos J.J., Mechatronics Department, School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Tecnológico, Monterrey, 64849, Mexico","This work presents a survey literature review on biomechanics, specifically aimed at the study of existent biomechanical tools through video analysis, in order to identify opportunities for researchers in the field, and discuss future proposals and perspectives. Scientific literature (journal papers and conference proceedings) in the field of video-based biomechanics published after 2010 were selected and discussed. The most common application of the study of biomechanics using this technique is sports, where the most reported applications are american football, soccer, basketball, baseball, jumping, among others. These techniques have also been studied in a less proportion, in ergonomy, and injury prevention. From the revised literature, it is clear that biomechanics studies mainly focus on the analysis of angles, speed or acceleration, however, not many studies explore the dynamical forces in the joints. The development of video-based biomechanic tools for force analysis could provide methods for assessment and prediction of biomechanical force associated risks such as injuries and fractures. Therefore, it is convenient to start exploring this field. A few case studies are reported, where force estimation is performed via manual tracking in different scenarios. This demonstration is carried out using conventional manual tracking, however, the inclusion of similar methods in an automated manner could help in the development of intelligent healthcare, force prediction tools for athletes and/or elderly population. Future trends and challenges in this field are also discussed, where data availability and artificial intelligence models will be key to proposing new and more reliable methods for biomechanical analysis. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.","biomechanics; biometry; digital tracking; force estimation; video analysis","","Yoshida Y., Nishimura T., Jokinen K., Biomechanics for understanding movements in daily activities, Proceedings of the LREC 2018 Workshop Language and Body in Real Life, (2018); Singh G.K., Biomechanics of Human Movement in Occupational Tasks with Ergonomic Considerations, (2014); Dafoulas G.A., Maia C.C., Clarke J.S., Ali A., Augusto J., Investigating the role of biometrics in education—The use of sensor data in collaborative learning, Proceedings of the MCCSIS 2018—Multi Conference on Computer Science and Information Systems, pp. 115-123, (2018); Albert J.A., Owolabi V., Gebel A., Brahms C.M., Granacher U., Arnrich B., Evaluation of the pose tracking performance of the azure kinect and kinect v2 for gait analysis in comparison with a gold standard: A pilot study, Sensors, 20, (2020); Fernandez-Baena A., Susin A., Lligadas X., Biomechanical validation of upper-body and lower-body joint movements of kinect motion capture data for rehabilitation treatments, Proceedings of the 2012 4th International Conference on Intelligent Networking and Collaborative Systems, pp. 656-661, (2012); De Froda S.F., Thigpen C.A., Kriz P.K., Two-dimensional video analysis of youth and adolescent pitching biomechanics: A tool for the common athlete, Curr. Sports Med. Rep, 15, pp. 350-358, (2016); Guten G.N., Running Injuries, (1997); Fredericson M., Jennings F., Beaulieu C., Matheson G.O., Stress fractures in athletes, Top. Magn. Reson. Imaging, 17, pp. 309-325, (2006); Baggaley M., Esposito M., Xu C., Unnikrishnan G., Reifman J., Edwards W.B., Effects of load carriage on biomechanical variables associated with tibial stress fractures in running, Gait Posture, 77, pp. 190-194, (2020); Garrett W.E., Principles and Practice of Orthopaedic Sports Medicine, (2000); Irani M., Principles and Practice of Primary Care Sports Medicine, (2001); Iwamoto J., Takeda T., Stress fractures in athletes: Review of 196 cases, J. Orthop. Sci, 8, pp. 273-278, (2003); Troy K.L., Davis I.S., Tenforde A.S., A Narrative Review of Metatarsal Bone Stress Injury in Athletic Populations: Etiology, Biomechanics, and Management, PM&R, 13, pp. 1281-1290, (2020); Bennell K., Brukner P., Preventing and managing stress fractures in athletes, Phys. Ther. Sport, 6, pp. 171-180, (2005); Boutefnouchet T., Budair B., Backshayesh P., Ali S.A., Metatarsal fractures: A review and current concepts, Trauma, 16, pp. 147-163, (2014); Miller D., Marsland D., Jones M., Calder J., Early return to playing professional football following fixation of 5th metatarsal stress fractures may lead to delayed union but does not increase the risk of long-term non-union, Knee Surg. Sports Traumatol. Arthrosc, 27, pp. 2796-2801, (2019); Ekstrand J., van Dijk C.N., Fifth metatarsal fractures among male professional footballers: A potential career-ending disease, Br. J. Sports Med, 47, pp. 754-758, (2013); Lawrence S.J., Botte M.J., Jones’ fractures and related fractures of the proximal fifth metatarsal, Foot Ankle, 14, pp. 358-365, (1993); Kuzuyama M., Perrier J., Kusaki Y., Sato K., Yamaura I., Tsuchiya A., Characteristics of plantar pressure distribution in elite male soccer players with or without history of proximal fifth metatarsal fracture: A case-control study, J. Phys. Ther. Sci, 31, pp. 530-535, (2019); Thomson A., Akenhead R., Whiteley R., D'Hooghe P., Van Alsenoy K., Bleakley C., Fifth metatarsal stress fracture in elite male football players: An on-field analysis of plantar loading, BMJ Open Sport Exerc. Med, 4, (2018); Sims E., Hardaker W., Queen R., Gender differences in plantar loading during three soccer-specific tasks, Br. J. Sports Med, 42, pp. 272-277, (2008); Fujitaka K., Taniguchi A., Isomoto S., Kumai T., Otuki S., Okubo M., Tanaka Y., Pathogenesis of fifth metatarsal fractures in college soccer players, Orthop. J. Sports Med, 3, (2015); Matsuda S., Fukubayashi T., Hirose N., Characteristics of the foot static alignment and the plantar pressure associated with fifth metatarsal stress fracture history in male soccer players: A case-control study, Sports Med.-Open, 3, pp. 1-7, (2017); Azevedo R.R., da Rocha E.S., Franco P.S., Carpes F.P., Plantar pressure asymmetry and risk of stress injuries in the foot of young soccer players, Phys. Ther. Sport, 24, pp. 39-43, (2017); Fujitaka K., Tanaka Y., Taniguchi A., Ogawa M., Isomoto S., Otuki S., Okubo M., Pathoanatomy of the Jones fracture in male university soccer players, Am. J. 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Eugenio Garza Sada 2501 Sur, Tecnológico, 64849, Mexico; email: jorge.lozoya@tec.mx","","MDPI","20763417","","","","English","Appl. Sci.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85128868835" "Sokol-Randell D.; Stelzer-Hiller O.W.; Allan D.; Tierney G.","Sokol-Randell, Darek (57219230220); Stelzer-Hiller, Oscar W. (57920518500); Allan, David (57203949193); Tierney, Gregory (57190610756)","57219230220; 57920518500; 57203949193; 57190610756","Heads Up! A Biomechanical Pilot Investigation of Soccer Heading Using Instrumented Mouthguards (iMGs)","2023","Applied Sciences (Switzerland)","13","4","2639","","","","5","10.3390/app13042639","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85149320057&doi=10.3390%2fapp13042639&partnerID=40&md5=ee8a33a266477eb2347e51e0383495d3","Sport and Exercise Sciences Research Institute, School of Sport, Faculty of Life and Health Sciences, Ulster University, Belfast, BT15 1ED, United Kingdom; Department of Neurology, Memorial University of Newfoundland, St. John’s, A1B 3V6, NL, Canada; School of Exercise and Sport Science, University of Sydney, Camperdown, 2006, NSW, Australia; Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, United Kingdom","Sokol-Randell D., Sport and Exercise Sciences Research Institute, School of Sport, Faculty of Life and Health Sciences, Ulster University, Belfast, BT15 1ED, United Kingdom, Department of Neurology, Memorial University of Newfoundland, St. John’s, A1B 3V6, NL, Canada; Stelzer-Hiller O.W., School of Exercise and Sport Science, University of Sydney, Camperdown, 2006, NSW, Australia, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, United Kingdom; Allan D., Sport and Exercise Sciences Research Institute, School of Sport, Faculty of Life and Health Sciences, Ulster University, Belfast, BT15 1ED, United Kingdom; Tierney G., Sport and Exercise Sciences Research Institute, School of Sport, Faculty of Life and Health Sciences, Ulster University, Belfast, BT15 1ED, United Kingdom","Soccer players purposefully head the ball, raising concerns about reduced tolerance to concussion and potential long-term brain health. By combining qualitative video analysis with custom-fit instrumented mouthguards (iMGs), we aimed to categorize header kinematics (peak linear acceleration (PLA) and peak angular acceleration (PAA)) by header type and ball delivery method. iMGs were fitted to 10 male collegiate players for twelve matches. A total of 133 headers were verified and contextualized via video review. The most common header type (38.7%), as well as the preceding ball delivery method (47.4%), was found to be a pass. Approximately one-quarter of header impacts (27.0%) occurred below 10 g. For header type, there were no significant differences in kinematics, with shot attempts having the highest median PLA and PAA. For ball delivery methods, goal kicks had significantly greater PAA than long balls and pass attempts. The current study highlights the utility of qualitative video analysis in combination with real-time head kinematic data from iMGs to understand the mechanism and severity of header impacts. The pilot findings indicate that high-speed ball delivery methods result in higher head kinematics and should be a focus of future mitigation strategies. © 2023 by the authors.","biomechanics; concussion; football; head acceleration events; head impacts; heading","","Kenny R., Elez M., Clansey A., Virji-Babul N., Wu L.C., Head Impact Exposure and Biome-chanics in University Varsity Women’s Soccer, Ann. Biomed. Eng, 50, pp. 1461-1472, (2022); Kirkendall D.T., Jordan S.E., Garrett W.E., Heading and Head Injuries in Soccer, Sports Med, 31, pp. 369-386, (2001); Armstrong N., Rotundo M., Aubrey J., Tarzi C., Cusimano M.D., Characteristics of po-tential concussive events in three elite football tournaments, Inj. 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A comparative analysis of ball retention and team success in European and interna-tional football, 2007–2010, J. Sport. Sci, 31, pp. 123-136, (2013); Updated Heading Guidance Announced for Youth Training Sessions, (2020); Lynall R.C., Clark M.D., Grand E.E., Stucker J.C., Littleton A.C., Aguilar A.J., Petschauer M.A., Teel E.F., Mihalik J.P., Head Impact Biomechanics in Women’s College Soccer, Med. Sci. Sport. Exerc, 48, pp. 1772-1778, (2016); Nevins D., Hildenbrand K., Vasavada A., Kensrud J., Smith L., In-Game Head Impact Exposure of Male and Female High School Soccer Players, Athl. Train. Sports Health Care, 11, pp. 174-182, (2019); Hanlon E.M., Bir C.A., Real-Time Head Acceleration Measurement in Girls’ Youth Soccer, Med. Sci. Sports Exerc, 44, pp. 1102-1108, (2012); Tierney G., Weaving D., Tooby J., Al-Dawoud M., Hendricks S., Phillips G., Stokes K.A., Till K., Jones B., Quantifying head acceleration exposure via instrumented mouthguards (iMG): A validity and fea-sibility study protocol to inform iMG suitability for the TaCKLE project, BMJ Open Sport Exerc. Med, 7, (2021); Mackay D.F., Russell E.R., Stewart K., MacLean J.A., Pell J.P., Stewart W., Neurodegenerative Disease Mortality among Former Professional Soccer Players, N. Engl. J. Med, 381, pp. 1801-1808, (2019); Kaminski T.W., Wikstrom A.M., Gutierrez G., Glutting J.J., Purposeful heading during a season does not influence cognitive function or balance in female soccer players, J. Clin. Exp. Neuropsychol, 29, pp. 742-751, (2007); Wu S., Zhao W., Rowson B., Rowson S., Ji S., A network-based response feature matrix as a brain injury metric, Biomech. Model. Mechanobiol, 19, pp. 927-942, (2020); Bian K., Mao H., Mechanisms and variances of rotation-induced brain injury: A parametric investigation between head kinematics and brain strain, Biomech. Model. Mechanobiol, 19, pp. 2323-2341, (2020); Prosser H., Perceptions, Attitudes, Self-Efficacy, and Behaviors of Mouthguard Use Among Collegiate Athletes, (2020); Collins C.L., McKenzie L.B., Roberts K.J., Fields S.K., Comstock R.D., Mouthguard BITES (Behavior, Impulsivity, Theory Evaluation Study): What Drives Mouthguard Use Among High School Basketball and Baseball/Softball Athletes, J. Prim. Prev, 36, pp. 323-334, (2015); Tanaka Y., Maeda Y., Yang T.C., Ando T., Tauchi Y., Miyanaga H., Prevention of orofacial injury via the use of mouthguards among young male rugby players, Int. J. Sports Med, 36, pp. 254-261, (2015); Dursun E., Ilarslan Y.D., Ozgul O., Donmez G., Prevalence of dental trauma and mouthguard awareness among weekend warrior soccer players, J. Oral Sci, 57, pp. 191-194, (2015)","G. Tierney; Sport and Exercise Sciences Research Institute, School of Sport, Faculty of Life and Health Sciences, Ulster University, Belfast, BT15 1ED, United Kingdom; email: g.tierney@ulster.ac.uk","","MDPI","20763417","","","","English","Appl. Sci.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85149320057" "Suchomel T.J.; Nimphius S.; Stone M.H.","Suchomel, Timothy J. (55307500500); Nimphius, Sophia (15751645000); Stone, Michael H. (7402473307)","55307500500; 15751645000; 7402473307","Scaling isometric mid-thigh pull maximum strength in division I Athletes: are we meeting the assumptions?","2020","Sports Biomechanics","19","4","","532","546","14","5","10.1080/14763141.2018.1498910","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85051936097&doi=10.1080%2f14763141.2018.1498910&partnerID=40&md5=fe606d451b22e60e4f3e4d7e011ef136","Department of Human Movement Sciences, Carroll University, Waukesha, WI, United States; Centre for Exercise and Sports Science Research, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia; Department of Exercise and Sport Sciences, East Tennessee State University, Johnson City, TN, United States","Suchomel T.J., Department of Human Movement Sciences, Carroll University, Waukesha, WI, United States; Nimphius S., Centre for Exercise and Sports Science Research, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia; Stone M.H., Department of Exercise and Sport Sciences, East Tennessee State University, Johnson City, TN, United States","This study examined the validity of various scaling methods, isometric mid-thigh pull (IMTP) peak force using various scaling methods, and the relationships between IMTP peak force and countermovement jump height.  Fifty-one collegiate baseball and soccer athletes performed two maximal IMTPs.  Absolute peak force was compared between teams and when data were scaled using ratio (RS), traditional allometric (ALLOTrad), and fitted allometric (ALLOFit) scaling.  ALLOTrad and ALLOFit validity was violated because different derived exponents existed for baseball (b = 0.20) and soccer (b = 1.20).  Soccer athletes produced greater RS peak force compared to baseball (p = 0.012), while no difference existed with absolute, ALLOTrad or ALLOFit (all p > 0.05) peak force.  Moderate relationships existed between body mass and absolute (r = 0.402, p = 0.003) and RS (r = -0.328, p = 0.019) peak force, while trivial relationships existed with ALLOTrad and ALLOFit (both r < -0.10, p > 0.05).  Trivial relationships existed between countermovement jump height and absolute, RS, ALLOTrad, and ALLOFit (all r < 0.20, p > 0.05) peak force.  The current dataset violated allometric scaling assumptions, making it inappropriate to use ALLOTrad and ALLOFit scaling.  Practitioners must understand the assumptions, limitations, and purpose of scaling methods. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.","allometric scaling; athletic performance; countermovement jump; isometric strength; Ratio scaling","Adolescent; Baseball; Biomechanical Phenomena; Body Mass Index; Cross-Sectional Studies; Exercise Test; Humans; Isometric Contraction; Muscle Strength; Muscle, Skeletal; Plyometric Exercise; Reproducibility of Results; Soccer; Thigh; Young Adult; adolescent; baseball; biomechanics; body mass; cross-sectional study; exercise test; human; muscle isometric contraction; muscle strength; physiology; plyometrics; procedures; reproducibility; skeletal muscle; soccer; thigh; young adult","Atkins S.J., Normalizing expressions of strength in elite rugby league players, Journal of Strength and Conditioning Research, 18, pp. 53-58, (2004); Batterham A.M., George K.P., Allometric modeling does not determine a dimensionless power function ratio for maximal muscular function, Journal of Applied Physiology, 83, pp. 2158-2166, (1997); Beckham G.K., Suchomel T.J., Bailey C.A., Sole C.J., Grazer J.L., The relationship of the reactive strength index-modified and measures of force development in the isometric mid-thigh pull, Paper presented at the XXXIInd International Conference of Biomechanics in Sports, (2014); Chia M., Aziz A.R., Modelling maximal oxygen uptake in athletes: Allometric scaling versus ratio-scaling in relation to body mass, Annals academy of medicine Singapore, 37, pp. 300-306, (2008); Comfort P., Pearson S.J., Scaling—Which methods best predict performance?, Journal of Strength and Conditioning Research, 28, pp. 1565-1572, (2014); Crewther B.T., Gill N., Weatherby R.P., Lowe T., A comparison of ratio and allometric scaling methods for normalizing power and strength in elite rugby union players, Journal of Sports Sciences, 27, pp. 1575-1580, (2009); Crewther B.T., Kilduff L.P., Cook C.J., Cunningham D.J., Bunce P.J., Bracken R.M., Gaviglio C.M., Scaling strength and power for body mass differences in rugby union players, Journal of Sports Medicine and Physical Fitness, 52, pp. 27-32, (2012); Dooman C.S., Vanderburgh P.M., Allometric modeling of the bench press and squat: Who is the strongest regardless of body mass?, Journal of Strength and Conditioning Research, 14, pp. 32-36, (2000); Haff G.G., Stone M.H., O'Bryant H.S., Harman E., Dinan C., Johnson R., Han K.-H., Force-time dependent characteristics of dynamic and isometric muscle actions, Journal of Strength and Conditioning Research, 11, pp. 269-272, (1997); Ham D.J., Knez W.L., Young W.B., A deterministic model of the vertical jump: Implications for training, Journal of Strength and Conditioning Research, 21, pp. 967-972, (2007); Hansen K.T., Cronin J.B., Pickering S.L., Douglas L., Do force–Time and power–Time measures in a loaded jump squat differentiate between speed performance and playing level in elite and elite junior rugby union players?, Journal of Strength and Conditioning Research, 25, pp. 2382-2391, (2011); Hoff J., Kemi O.J., Helgerud J., Strength and endurance differences between elite and junior elite ice hockey players. The importance of allometric scaling, International Journal of Sports Medicine, 26, pp. 537-541, (2005); Hopkins W.G., A scale of magnitude for effect statistics, (2014); Jacobson B.H., Thompson B.J., Conchola E.C., Glass R., A comparison of absolute, ratio and allometric scaling methods for normalizing strength in elite American football players, Journal of Athletic Enhancement, 2, (2013); Jaric S., Mirkov D., Markovic G., Normalizing physical performance tests for body size: A proposal for standardization, Journal of Strength and Conditioning Research, 19, pp. 467-474, (2005); Kraska J.M., Ramsey M.W., Haff G.G., Fethke N., Sands W.A., Stone M.E., Stone M.H., Relationship between strength characteristics and unweighted and weighted vertical jump height, International Journal of Sports Physiol and Performance, 4, pp. 461-473, (2009); Linthorne N.P., Analysis of standing vertical jumps using a force platform, American Journal of Physics, 69, pp. 1198-1204, (2001); Mullineaux D.R., Milner C.E., Davis I.S., Hamill J., Normalization of ground reaction forces, Journal of Applied Biomechanics, 22, pp. 230-233, (2006); Nevill A.M., Bate S., Holder R.L., Modeling physiological and anthropometric variables known to vary with body size and other confounding variables, American Journal of Physical Anthropology, 128S41, pp. 141-153, (2005); Nevill A.M., Ramsbottom R., Williams C., Scaling physiological measurements for individuals of different body size, European Journal of Applied Physiology and Occupational Physiology, 65, pp. 110-117, (1992); Nevill A.M., Stewart A.D., Olds T., Holder R., Are adult physiques geometrically similar? The dangers of allometric scaling using body mass power laws, American Journal of Physical Anthropology, 124, pp. 177-182, (2004); Sole C.J., Mizuguchi S., Sato K., Moir G.L., Stone M.H., Phase characteristics of the countermovement jump force-time curve: A comparison of athletes by jumping ability, Journal of Strength and Conditioning Research, 32, pp. 1155-1165, (2018); Sole C.J., Mizuguchi S., Suchomel T.J., Sands W.A., Stone M.H., Longitudinal monitoring of countermovement jump mechanical variables: A preliminary investigation, Paper presented at the XXXIInd International Conference of Biomechanics in Sports, (2014); Stone M.H., Sands W.A., Pierce K.C., Carlock J., Cardinale M., Newton R.U., Relationship of maximum strength to weightlifting performance, Medicine and Science in Sports and Exercise, 37, pp. 1037-1043, (2005); Suchomel T.J., Bailey C.A., Monitoring and managing fatigue in baseball players, Strength and Conditioning Journal, 36, pp. 39-45, (2014); Suchomel T.J., Bailey C.A., Sole C.J., Grazer J.L., Beckham G.K., Using reactive strength index-modified as an explosive performance measurement tool in Division I athletes, Journal of Strength and Conditioning Research, 29, pp. 899-904, (2015); Suchomel T.J., Lamont H.S., Moir G.L., Understanding vertical jump potentiation: A deterministic model, Sports Medicine, 46, pp. 809-828, (2016); Suchomel T.J., Nimphius S., Stone M.H., The importance of muscular strength in athletic performance, Sports Medicine, 46, pp. 1419-1449, (2016); Suchomel T.J., Sole C.J., Bailey C.A., Grazer J.L., Beckham G.K., A comparison of reactive strength index-modified between six U.S. collegiate athletic teams, Journal of Strength and Conditioning Research, 29, pp. 1310-1316, (2015); Tanner J.M., Fallacy of per-weight and per-surface area standards, and their relation to spurious correlation, Journal of Applied Physiology, 2, pp. 1-15, (1949); Thomas C., Jones P.A., Rothwell J., Chiang C.-Y., Comfort P., An investigation into the relationship between maximum isometric strength and vertical jump performance, Journal of Strength and Conditioning Research, 29, pp. 2176-2185, (2015); Thompson B.J., Smith D.B., Jacobson B.H., Fiddler R.E., Warren A.J., Long B.C., Ryan E.D., The influence of ratio and allometric scaling procedures for normalizing upper body power output in division I collegiate football players, Journal of Strength and Conditioning Research, 24, pp. 2269-2273, (2010); Vanderburgh P.M., Two important cautions in the use of allometric scaling: The common exponent and group difference principles, Measurement in Physical Education and Exercise Science, 2, pp. 153-163, (1998); Welsman J.R., Scaling performance for differences in body size, Pedatric exercise and sport medicine, pp. 7-23, (2000); Winter E.M., Importance and principles of scaling for size differences, The child and adolescent athlete, pp. 673-679, (1996)","T.J. Suchomel; Department of Human Movement Sciences, Carroll University, Waukesha, United States; email: tsuchome@carrollu.edu","","Routledge","14763141","","","30102119","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-85051936097" "Forelli F.; Le Coroller N.; Gaspar M.; Memain G.; Kakavas G.; Miraglia N.; Marine P.; Maille P.; Hewett T.E.; Rambaud A.J.M.","Forelli, Florian (58066572800); Le Coroller, Nicolas (58193759800); Gaspar, Maxime (58193945400); Memain, Geoffrey (58194317600); Kakavas, Georgios (57210750268); Miraglia, Nicholas (58193390600); Marine, Patrice (57797452900); Maille, Pascal (47962096100); Hewett, Timothy E. (7005201943); Rambaud, Alexandre J. M. (57194700528)","58066572800; 58193759800; 58193945400; 58194317600; 57210750268; 58193390600; 57797452900; 47962096100; 7005201943; 57194700528","Ecological and Specific Evidence-Based Safe Return To Play After Anterior Cruciate Ligament Reconstruction In Soccer Players: A New International Paradigm","2023","International Journal of Sports Physical Therapy","18","2","","526","540","14","4","10.26603/001c.73031","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85153402194&doi=10.26603%2f001c.73031&partnerID=40&md5=861302c2523f51141d63b1ff0f1ef97d","Orthosport; La Tour Hospital; Clairefontaine Medical Center; Fysiotek Spine & Sports Lab; Miraglia Private Clinic; Marshall University; University Hospital of Saint Etienne","Forelli F., Orthosport; Le Coroller N., La Tour Hospital; Gaspar M., Clairefontaine Medical Center; Memain G., Clairefontaine Medical Center; Kakavas G., Fysiotek Spine & Sports Lab; Miraglia N., Miraglia Private Clinic; Marine P., Orthosport; Maille P., Clairefontaine Medical Center; Hewett T.E., Marshall University; Rambaud A.J.M., University Hospital of Saint Etienne","Existing return to play (RTP) assessments have not demonstrated the ability to decrease risk of subsequent anterior cruciate ligament (ACL) injury after reconstruction (ACLR). RTP criteria are standardized and do not simulate the physical and cognitive activity required by the practice of sport. Most RTP criteria do not include an ecological approach. There are scientific algorithms as the “5 factor maximum model” that can identify risk profiles and help reduce the risk of a second anterior cruciate ligament injury. Nevertheless, these algorithms remain too standardized and do not include the situations experienced in games by soccer players. This is why it is important to integrate ecological situations specific to the environment of soccer players in order to evaluate players under conditions closest to their sporting activity, especially with high cognitive load. One should identify high risk players under two conditions: Clinical analyses commonly include assessments such as isokinetic testing, functional tests (hop tests, vertical force-velocity, profile), running, clinical assessments (range of motion and graft laxity), proprioception and balance (Star Excursion Balance Test modified, Y-Balance, stabilometry) and psychological parameters (kinesophobia, quality of life and fear of re-injury). Field testing usually includes game simulation, evaluation under dual-task conditions, fatigue and workload analysis, deceleration, timed-agility-test and horizontal force-velocity profiles. Although it seems important to evaluate strength, psychological variables and aerobic and anaerobic capacities, evaluation of neuromotor control in standard and ecological situations may be helpful for reducing the risk of injury after ACLR. This proposal for RTP testing after ACLR is supported by the scientific literature and attempts to approximate the physical and cognitive loads during a soccer match. Future scientific investigation will be required to demonstrate the validity of this approach. © 2023, North American Sports Medicine Institute. All rights reserved.","anterior cruciate ligament reconstruction; battery test; ecological approach; return to play; soccer specific","anterior cruciate ligament injury; anterior cruciate ligament reconstruction; Article; biomechanics; cognition assessment; disease assessment; ecology; endurance training; fatigue; football player; ground reaction force; human; isokinetic exercise; kinesiophobia; limb symmetry index; muscle strength; physical activity; quality of life; range of motion; risk factor; soccer; treadmill exercise; triple hop test; walking; work environment; workload","Gilchrist J, Mandelbaum BR, Melancon H, Et al., A randomized controlled trial to prevent noncontact anterior cruciate ligament injury in female collegiate soccer players, Am J Sports Med, 36, 8, pp. 1476-1483, (2008); Forsythe B, Lavoie-Gagne OZ, Forlenza EM, Diaz CC, Mascarenhas R., return-to-play times and player performance after acl reconstruction in elite UEFA professional soccer players: a matched-cohort analysis from 1999 to 2019, Orthop J Sports Med, 9, 5, (2021); Della Villa F, Hagglund M, Della Villa S, Ekstrand J, Walden M., High rate of second acl injury following acl reconstruction in male professional footballers: an updated longitudinal analysis from 118 players in the uefa elite club injury study, Br J Sports Med, 55, 23, pp. 1350-1357, (2021); Eliakim E, Morgulev E, Lidor R, Meckel Y., Estimation of injury costs: financial damage of english premier league teams’ underachievement due to injuries, BMJ Open Sport Exerc Med, 6, 1, (2020); Webster KE, Hewett TE., What is the evidence for and validity of return-to-sport testing after anterior cruciate ligament reconstruction surgery? a systematic review and meta-analysis, Sports Med, 49, 6, pp. 917-929, (2019); Welling W, Benjaminse A, Lemmink K, Gokeler A., Passing return to sports tests after acl reconstruction is associated with greater likelihood for return to sport but fail to identify second injury risk, Knee, 27, 3, pp. 949-957, (2020); Gokeler A, Benjaminse A, Della Villa F, Tosarelli F, Verhagen E, Baumeister J., Anterior cruciate ligament injury mechanisms through a neurocognition lens: implications for injury screening, BMJ Open Sport Exerc Med, 7, 2, (2021); Gokeler A, Welling W, Zaffagnini S, Seil R, Padua D., Development of a test battery to enhance safe return to sports after anterior cruciate ligament reconstruction, Knee Surg Sports Traumatol Arthrosc, 25, 1, pp. 192-199, (2017); Gokeler A, Dingenen B, Hewett TE., Rehabilitation and return to sport testing after anterior cruciate ligament reconstruction: where are we in 2022?, Arthrosc Sports Med Rehabil, 4, 1, pp. e77-e82, (2022); Benjaminse A, Verhagen E., Implementing acl injury prevention in daily sports practice—it’s not just the program: let’s build together, involve the context, and improve the content, Sports Med, 51, 12, pp. 2461-2467, (2021); Hewett TE, Webster KE, Hurd WJ., Systematic selection of key logistic regression variables for risk prediction analyses: a five-factor maximum model, Clin J Sport Med, 29, 1, pp. 78-85, (2019); Hewett TE., prediction of future injury in sport: primary and secondary anterior cruciate ligament injury risk and return to sport as a model, J Orthop Sports Phys Ther, 47, 4, pp. 228-231, (2017); Rambaud AJM, Ardern CL, Thoreux P, Regnaux JP, Edouard P., Criteria for return to running after anterior cruciate ligament reconstruction: a scoping review, Br J Sports Med, 52, 22, pp. 1437-1444, (2018); Hackney JM, Wade MG, Larson C, Smith JP, Rakow J., Impairment in people with anterior cruciate ligament reconstruction in adjusting ground reaction force in running, Physiother Theory Pract, 26, 5, pp. 289-296, (2010); Greenberg EM, Greenberg ET, Albaugh J, Storey E, Ganley TJ., Rehabilitation practice patterns following anterior cruciate ligament reconstruction: a survey of physical therapists, J Orthop Sports Phys Ther, 48, 10, pp. 801-811, (2018); Knurr KA, Kliethermes SA, Stiffler-Joachim MR, Cobian DG, Baer GS, Heiderscheit BC., Running biomechanics before injury and 1 year after anterior cruciate ligament reconstruction in division i collegiate athletes, Am J Sports Med, 49, 10, pp. 2607-2614, (2021); Manal TJ, Snyder-Mackler L., Practice guidelines for anterior cruciate ligament rehabilitation: a criterion-based rehabilitation progression, Oper Tech Orthop, 6, 3, pp. 190-196, (1996); Adams D, Logerstedt D, Hunter-Giordano A, Axe MJ, Snyder-Mackler L., Current concepts for anterior cruciate ligament reconstruction: a criterion-based rehabilitation progression, J Orthop Sports Phys Ther, 42, 7, pp. 601-614, (2012); Rambaud AJ, Neri T, Edouard P., Reconstruction, rehabilitation and return-to-sport continuum after anterior cruciate ligament injury (ACLR3-continuum): Call for optimized programs, Ann Phys Rehabil Med, 65, 4, (2021); Morin JB, Dalleau G, Kyrolainen H, Jeannin T, Belli A., A simple method for measuring stiffness during running, J Appl Biomech, 21, 2, pp. 167-180, (2005); Pappas P, Paradisis G, Tsolakis C, Smirniotou A, Morin JB., Reliabilities of leg and vertical stiffness during treadmill running, Sports Biomech, 13, 4, pp. 391-399, (2014); Gokeler A, Dingenen B, Mouton C, Seil R., Clinical course and recommendations for patients after anterior cruciate ligament injury and subsequent reconstruction: a narrative review, EFORT Open Rev, 2, 10, pp. 410-420, (2017); 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Impellizzeri F, Rampinini E, Castagna C, Et al., Validity of a repeated-sprint test for football, Int J Sports Med, 29, 11, pp. 899-905, (2008); Taberner M, Allen T, Cohen DD., Progressing rehabilitation after injury: consider the ‘control-chaos continuum, Br J Sports Med, 53, 18, pp. 1132-1136, (2019); Neto T, Sayer T, Theisen D, Mierau A., Functional brain plasticity associated with acl injury: a scoping review of current evidence, Neural Plast, 2019, pp. 1-17, (2019); Gokeler A, Benjaminse A, Hewett TE, Et al., Feedback techniques to target functional deficits following anterior cruciate ligament reconstruction: implications for motor control and reduction of second injury risk, Sports Med, 43, 11, pp. 1065-1074, (2013); De Blaiser C, Roosen P, Willems T, Danneels L, Bossche LV, De Ridder R., Is core stability a risk factor for lower extremity injuries in an athletic population? a systematic review, Phys Ther Sport, 30, pp. 48-56, (2018); Dalen T, Loras H, Hjelde GH, Kjosnes TN, Wisloff U., Accelerations – a new approach to quantify physical performance decline in male elite soccer?, Eur J Sport Sci, 19, 8, pp. 1015-1023, (2019); Buckthorpe M., Optimising the Late-Stage Rehabilitation and return-to-sport training and testing process after acl reconstruction, Sports Med, 49, 7, pp. 1043-1058, (2019); Abrams GD, Harris JD, Gupta AK, Et al., Functional performance testing after anterior cruciate ligament reconstruction: a systematic review, Orthop J Sports Med, 2, 1, (2014); Lozano D, Lampre M, Diez A, Et al., Global positioning system analysis of physical demands in small and large-sided games with floaters and official matches in the process of return to play in high level soccer players, Sensors, 20, 22, (2020); Ritchie D, Hopkins WG, Buchheit M, Cordy J, Bartlett JD., Quantification of training load during return to play after upper-and lower-body injury in australian rules football, Int J Sports Physiol Perform, 12, 5, pp. 634-641, (2017); Foster C, Rodriguez-Marroyo JA, de Koning JJ., Monitoring training loads: the past, the present, and the future, Int J Sports Physiol Perform, 12, s2, (2017); Di Paolo S, Zaffagnini S, Tosarelli F, Et al., A 2D qualitative movement assessment of a deceleration task detects football players with high knee joint loading, Knee Surg Sports Traumatol Arthrosc, 29, 12, pp. 4032-4040, (2021); Dix C, Arundale A, Silvers-Granelli H, Marmon A, Zarzycki R, Snyder-Mackler L., Biomechanical measures during two sport-specific tasks differentiate between soccer players who go on to anterior cruciate ligament injury and those who do not: a prospective cohort analysis, Int J Sports Phys Ther, 15, 6, pp. 928-935, (2020); Dos'Santos T, McBurnie A, Donelon T, Thomas C, Comfort P, Jones PA., A qualitative screening tool to identify athletes with ‘high-risk’ movement mechanics during cutting: the cutting movement assessment score (CMAS), Phys Ther Sport, 38, pp. 152-161, (2019); Dos'Santos T, Thomas C, Comfort P, Jones PA., The effect of training interventions on change of direction biomechanics associated with increased anterior cruciate ligament loading: a scoping review, Sports Med, 49, 12, pp. 1837-1859, (2019); Taberner M, van Dyk N, Allen T, Et al., Physical preparation and return to performance of an elite female football player following acl reconstruction: a journey to the fifa women’s world cup, BMJ Open Sport Exerc Med, 6, 1, (2020); Angelozzi M, Madama M, Corsica C, Et al., Rate of force development as an adjunctive outcome measure for return-to-sport decisions after anterior cruciate ligament reconstruction, J Orthop Sports Phys Ther, 42, 9, pp. 772-780, (2012); Filter A, Olivares-Jabalera J, Santalla A, Et al., Curve Sprinting in soccer: kinematic and neuromuscular analysis, Int J Sports Med, 41, 11, pp. 744-750, (2020); Barnes C, Archer D, Hogg B, Bush M, Bradley P., The evolution of physical and technical performance parameters in the english premier league, Int J Sports Med, 35, 13, pp. 1095-1100, (2014); Bradley PS, Sheldon W, Wooster B, Olsen P, Boanas P, Krustrup P., high-intensity running in english fa premier league soccer matches, J Sports Sci, 27, 2, pp. 159-168, (2009); Caldbeck P., contextual sprinting in premier league football, (2020); Loturco I, Pereira LA, Filter A, Et al., Curve sprinting in soccer: relationship with linear sprints and vertical jump performance, Biol Sport, 37, 3, pp. 277-283, (2020); Barber-Westin SD, Noyes FR., Effect of fatigue protocols on lower limb neuromuscular function and implications for anterior cruciate ligament injury prevention training: a systematic review, Am J Sports Med, 45, 14, pp. 3388-3396, (2017); Benjaminse A, Webster KE, Kimp A, Meijer M, Gokeler A., Revised approach to the role of fatigue in anterior cruciate ligament injury prevention: a systematic review with meta-analyses, Sports Med, 49, 4, pp. 565-586, (2019); Bourne MN, Webster KE, Hewett TE., Is fatigue a risk factor for anterior cruciate ligament rupture?, Sports Med, 49, 11, pp. 1629-1635, (2019); Chappell JD, Herman DC, Knight BS, Kirkendall DT, Garrett WE, Yu B., Effect of Fatigue on Knee Kinetics and Kinematics in Stop-Jump Tasks, Am J Sports Med, 33, 7, pp. 1022-1029, (2005); Gokeler A, Eppinga P, Dijkstra PU, Et al., Effect of fatigue on landing performance assessed with the landing error scoring system (less) in patients after acl reconstruction. a pilot study, Int J Sports Phys Ther, 9, 3, pp. 302-311, (2014); Morin JB, Gimenez P, Edouard P, Et al., Sprint acceleration mechanics: the major role of hamstrings in horizontal force production, Front Physiol, 6, (2015); Mendiguchia J, Edouard P, Samozino P, Et al., Field monitoring of sprinting power–force–velocity profile before, during and after hamstring injury: two case reports, J Sports Sci, 34, 6, pp. 535-541, (2016); Baena-Raya A, Rodriguez-Perez MA, Jimenez-Reyes P, Soriano-Maldonado A., maximizing acceleration and change of direction in sport: a case series to illustrate how the force-velocity profile provides additional information to that derived from linear sprint time, Int J Environ Res Public Health, 18, 11, (2021); Kakavas G, Malliaropoulos N, Blach W, Bikos G, Migliorini F, Maffulli N., Ball heading and subclinical concussion in soccer as a risk factor for anterior cruciate ligament injury, J Orthop Surg Res, 16, 1, (2021); Kakavas G, Malliaropoulos N, Pruna R, Traster D, Bikos G, Maffulli N., Neuroplasticity and anterior cruciate ligament injury, Indian J Orthop, 54, 3, pp. 275-280, (2020); Kakavas G, Malliaropoulos N, Bikos G, Et al., Periodization in anterior cruciate ligament rehabilitation: a novel framework, Med Princ Pract, 30, 2, pp. 101-108, (2021)","F. Forelli; Orthosport Rehab Center, Domont, 16 rue de Paris, 95330, France; email: fforelli@capio.fr","","North American Sports Medicine Institute","21592896","","","","English","Int. J. Sport. Phys. Ther.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85153402194" "Noh B.; Masunari A.; Akiyama K.; Fukano M.; Fukubayashi T.; Miyakawa S.","Noh, Byungjoo (57194265166); Masunari, Akihiko (56262106000); Akiyama, Kei (56262486900); Fukano, Mako (23034475000); Fukubayashi, Toru (7003671492); Miyakawa, Shumpei (15769772200)","57194265166; 56262106000; 56262486900; 23034475000; 7003671492; 15769772200","Structural deformation of longitudinal arches during running in soccer players with medial tibial stress syndrome","2015","European Journal of Sport Science","15","2","","173","181","8","7","10.1080/17461391.2014.932848","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84964284225&doi=10.1080%2f17461391.2014.932848&partnerID=40&md5=3e6949e0521be01f021970991e13de38","Department of Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, Japan; Center for Medical Sciences, Ibaraki Prefectural University of Health Sciences, Ibaraki, Japan; Graduate School of Sport Sciences, Waseda University, Saitama, Japan; Waseda University, Saitama, Japan","Noh B., Department of Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, Japan; Masunari A., Department of Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, Japan, Center for Medical Sciences, Ibaraki Prefectural University of Health Sciences, Ibaraki, Japan; Akiyama K., Graduate School of Sport Sciences, Waseda University, Saitama, Japan; Fukano M., Waseda University, Saitama, Japan; Fukubayashi T., Waseda University, Saitama, Japan; Miyakawa S., Department of Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, Japan","Abstract: The purpose of this study was to compare angular change and translational motion from the medial longitudinal arch (MLA) and lateral longitudinal arch (LLA) during running between medial tibial stress syndrome (MTSS) and non-MTSS subjects. A total of 10 subjects volunteered, comprising 5 subjects with MTSS and 5 subjects without injury (non-MTSS) as the control group. All subjects performed the test movement that simulated running. Fluoroscopic imaging was used to investigate bone movement during landing in running. Sagittal motion was defined as the angular change and translational motion of the arch. A Mann-Whitney U-test was performed to determine the differences in the measured values between the MTSS and non-MTSS groups. The magnitude of angular change for the MLA and LLA was significantly greater for subjects with MTSS than for control subjects. Translational motion of the MLA and LLA of the MTSS group was also significantly greater than that of the non-MTSS group (all p < 0.05). Soccer players with MTSS have an abnormal structural deformation of foot during support (or stance) phase of running, with a large decrease in both the MLA and LLA. This abnormal motion could be a risk factor for the development of MTSS in these subjects. © 2014, © 2014 European College of Sport Science.","fluoroscopy; foot biomechanics; longitudinal arch; Medial tibial stress syndrome","Adult; Biomechanical Phenomena; Bone and Bones; Cumulative Trauma Disorders; etiology; etiology; Foot; Humans; Male; Medial Tibial Stress Syndrome; Movement; pathology; pathology; pathology; Risk Factors; Running; Soccer; Young Adult; adult; biomechanics; bone; comparative study; Cumulative Trauma Disorders; etiology; etiology; foot; human; male; medial tibial stress syndrome; movement (physiology); pathology; risk factor; running; soccer; young adult","Banks A.S., Downey M.S., Martin D.E., Miller S.J., McGlamry's comprehensive book of foot and ankle surgery, (2001); Bartosik K.E., Sitler M., Hillstrom H.J., Palamarchuk H., Huxel K., Kim E., Anatomical and biomechanical assessments of medial tibial stress syndrome, Journal of the American Podiatric Medical Association, 100, 2, pp. 121-132, (2010); Bates P., Shin splints: A literature review, British Journal of Sports Medicine, 19, 3, pp. 132-137, (1985); Beck B.R., Osternig L.R., Medial tibial stress syndrome: The location of muscles in the leg in relation to syndrome, Journal of Bone and Joint Surgery. American Volume, 76, pp. 1057-1061, (1994); Behnke R.S., Kinetic anatomy, (2006); Clanton T.O., Solcher B.W., Chronic leg pain in the athlete, Clinical Journal of Sport Medicine, 13, pp. 743-759, (1994); Devas M.B., Stress fractures of the tibia in athlete or shin soreness, Journal of Bone and Joint Surgery. British Volume, 40-B, pp. 227-239, (1958); Donald A.N., Kinesiology of the musculoskeletal system, (2004); Franklyn M., Oakes B., Field B., Wells P., Morgan D., Section modulus is the optimum geometric predictor for stress fractures and medial tibial stress syndrome in both male and female athletes, American Journal of Sports Medicine, 36, pp. 1179-1189, (2008); Fukano M., Fukubayashi T., Motion characteristics of the medial and lateral longitudinal arch during landing, European Journal of Applied Physiology, 105, pp. 387-392, (2009); Fukano M., Fukubayashi T., Gender-based differences in the functional deformation of the foot longitudinal arch, Foot, 22, 1, pp. 6-9, (2012); Gath W.P.J., Miller S.T., Evaluation of claw toe deformity, weakness of the foot intrinsic, and posteromedial shin pain, American Journal of Sports Medicine, 17, pp. 821-827, (1989); Gefen A., Plantar soft tissue loading under the medial metatarsals in the standing diabetic foot, Medical Engineering & Physics, 25, pp. 491-499, (2003); Gefen A., Megido-Ravid M., Itzchak Y., Arcan M., Biomechanical analysis of the three-dimensional foot structure during gait: A basic tool for clinical applications, Journal of Biomechanical Engineering, 122, pp. 630-639, (2000); Gehlsen G.M., Seger A., Selected measures of angular displacement, strength, and flexibility in subjects with and without shin splints, Research Quarterly for Exercise and Sport, 51, pp. 478-485, (1980); Hasegawa H., Yamauchi T., Kraemer W.J., Foot strike patterns of runners at the 15-km point during an elite-level half marathon, Journal of Strength and Conditioning Research, 21, pp. 888-893, (2007); Hintermann B., Nigg B.M., Pronation in runners: Implications for injuries, Sports Medicine, 26, pp. 169-176, (1998); Hubbard T.J., Carpenter E.M., Cordova M.L., Contributing factors to medial tibial stress syndrome: A prospective investigation, Medicine and Science in Sports and Exercise, 41, pp. 490-496, (2009); Kozanek M., Hosseini A., de Velde S.K., Moussa M.E., Li J.S., Gill T.J., Li G., Kinematic evaluation of the step-up exercise in anterior cruciate ligament deficiency, Clinical Biomechanics, 26, pp. 950-954, (2011); Magnusson H.I., Westlin N.E., Nyqvist F., Gardsell P., Seeman E., Karlsson M.K., Abnormally decreased regional bone density in athletes with medial tibial stress syndrome, American Journal of Sports Medicine, 29, pp. 712-715, (2001); Mann R., Inman V.T., Phasic activity of intrinsic muscles of the foot, Journal of Bone and Joint Surgery, 46, pp. 469-481, (1964); McKeag D.B., Dolan C., Overuse syndromes of the lower-extremity, Physician and Sports Medicine, 17, pp. 108-123, (1989); Moen M.H., Bongers T., Bakker E.W., Zimmer-mann W.O., Weir A., Tol J.L., Backx F.J., Risk factors and prognostic indicators for medial tibial stress syndrome, Scandinavian Journal of Medicine and Science in Sports, 22, 1, pp. 34-39, (2012); Mubarak S.J., Gould R.N., Lee Y.F., Schmidt D.A., Hargens A.R., The medial tibial stress syndrome: A cause of shin splints, American Journal of Sports Medicine, 10, pp. 201-205, (1982); Plisky M.S., Rauh M.J., Heiderscheit B., Underwood F.B., Tank R.T., Medial tibial stress syndrome in high school cross-country runners: Incidence and risk factors, Journal of Orthopaedic and Sports Physical Therapy, 37, 2, pp. 40-47, (2007); Raissi G.R., Cherati A.D., Mansoori K.D., Razi M.D., The relationship between lower extremity alignment and medial tibial stress syndrome among non-professional athletes, Sports Medicine, Arthroscopy, Rehabilitation, Therapy and Technology, 1, 1, pp. 11-18, (2009); Reshef N., Guelich D.R., Medial tibial stress syndrome, Clinics in Sports Medicine, 31, 2, pp. 273-290, (2012); Saxena A., O'Brien T., Bunce D., Anatomic dissection of the tibialis posterior muscle and its correlation to medial tibial stress syndrome, Journal of Foot Surgery, 29, 2, pp. 105-108, (1990); Stickley C.D., Hetzler R.K., Kimura I.F., Lozanoff S., Crural fascia and muscle origins related to medial tibial stress syndrome symptom location, Medicine and Science in Sports and Exercise, 41, 11, pp. 1191-1196, (2009); Terawaki A., Kouno T., Fujiya H., Yatabe K., Suga E., Foot pressure during standing and walking related to the onset of Shin splints, Japanese Journal of Physical Fitness and Sports Medicine, 58, (2009); Tweed J.L., Campbell J.A., Avil S.J., Biomechanical risk factors in the development of medial tibial stress syndrome in distance runners, Journal of the American Podiatric Medical Association, 98, pp. 436-444, (2008); Yates B., White S., The incidence and risk factors in the development of medial tibial stress syndrome among naval recruits, American Journal of Sports Medicine, 32, pp. 772-780, (2004)","","","Taylor and Francis Ltd.","17461391","","","25014846","English","Eur. J. Sport Sci.","Article","Final","","Scopus","2-s2.0-84964284225" "Parrington L.; Ball K.; MacMahon C.","Parrington, Lucy (55608149300); Ball, Kevin (7101771783); MacMahon, Clare (6602849021)","55608149300; 7101771783; 6602849021","Kinematics of a striking task: accuracy and speed–accuracy considerations","2015","Journal of Sports Sciences","33","4","","346","357","11","6","10.1080/02640414.2014.942685","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84919865684&doi=10.1080%2f02640414.2014.942685&partnerID=40&md5=94a9af4870828d4aae15a7a9d3ea299e","Institute of Sport, Exercise and Active Living, College of Sport and Exercise Science, Victoria University, Melbourne, Australia; School of Health Sciences, Swinburne University, Melbourne, Australia","Parrington L., Institute of Sport, Exercise and Active Living, College of Sport and Exercise Science, Victoria University, Melbourne, Australia; Ball K., Institute of Sport, Exercise and Active Living, College of Sport and Exercise Science, Victoria University, Melbourne, Australia; MacMahon C., School of Health Sciences, Swinburne University, Melbourne, Australia","Handballing in Australian football (AF) is the most efficient passing method, yet little research exists examining technical factors associated with accuracy. This study had three aims: (a) To explore the kinematic differences between accurate and inaccurate handballers, (b) to compare within-individual successful (hit target) and unsuccessful (missed target) handballs and (c) to assess handballing when both accuracy and speed of ball-travel were combined using a novel approach utilising canonical correlation analysis. Three-dimensional data were collected on 18 elite AF players who performed handballs towards a target. More accurate handballers exhibited a significantly straighter hand-path, slower elbow angular velocity and smaller elbow range of motion (ROM) compared to the inaccurate group. Successful handballs displayed significantly larger trunk ROM, maximum trunk rotation velocity and step-angle and smaller elbow ROM in comparison to the unsuccessful handballs. The canonical model explained 73% of variance shared between the variable sets, with a significant relationship found between hand-path, elbow ROM and maximum elbow angular velocity (predictors) and hand-speed and accuracy (dependant variables). Interestingly, not all parameters were the same across each of the analyses, with technical differences between inaccurate and accurate handballers different from those between successful and unsuccessful handballs in the within-individual analysis. © 2014, © 2014 Taylor & Francis.","Australian football; canonical correlation; handballing; three-dimensional analysis; underarm","Adult; Australia; Biomechanical Phenomena; Elbow; Hand; Humans; Male; Motor Skills; Range of Motion, Articular; Rotation; Shoulder; Soccer; Task Performance and Analysis; Torso; Young Adult; adult; Australia; biomechanics; elbow; hand; human; joint characteristics and functions; male; motor performance; physiology; rotation; shoulder; soccer; task performance; trunk; young adult","AFL statistics [match statistics documented from 2001–2013)], (2013); Ball K., Biomechanical considerations of distance kicking in Australian rules football, Sports Biomechanics, 7, 1, pp. 10-23, (2008); Ball K., Biomechanics of punt style kicks in football codes, Proceedings of the 7th world congress on science and football, (2011); Blackwell J., Knudson D., Tennis, Sports Biomechanics, 1, 2, pp. 187-191, (2002); Cappozzo A., Catani F., Della Croce U., Leardini A., Position and orientation in space of bones during movement: Anatomical frame definition and determination, Clinical Biomechanics, 10, 4, pp. 171-178, (1995); Cohen J., Statistical power analysis for the behavioural sciences, (1988); Dichiera A., Webster K., Kuilboer L., Morris M., Bach T., Feller J., Kinematic patterns associated with accuracy of the drop punt kick in Australian football, Journal of Science and Medicine in Sport, 9, pp. 292-298, (2006); Hair J.F., Tatham R.L., Anderson R.E., Black C.W., Multivariate data analysis, (1998); Knudson D., Fundamentals of biomechanics, (2007); Knudson D., Bahamonde R., Effect of endpoint conditions on position and velocity near impact in tennis, Journal of Sports Sciences, 19, 11, pp. 839-844, (2001); Ko Y.G., Challis J.H., Newell K.M., Learning to coordinate redundant degrees of freedom in a dynamic balance task, Human Movement Science, 22, pp. 47-66, (2003); Manal K., McClay I., Stanhope S., Richards J., Galinat B., Comparison of surface mounted markers and attachment methods in estimating tibial rotations during walking: An in vivo study, Gait and Posture, 11, pp. 38-45, (2000); Parrington L., Ball K., MacMahon C., Square to the target? Coaching cues and technical analysis of the Australian football handball, Proceedings from the 30th international conference on biomechanics in sports, pp. 158-161, (2012); Parrington L., Ball K., MacMahon C., Game-based analysis of handballing in Australian football, International Journal of Performance Analysis in Sport, 13, pp. 759-772, (2013); Parrington L., Ball K., MacMahon C., Taylor S., Biomechanical analysis of the handball in Australian football, Proceedings of the 27th international conference on biomechanics in sports, (2009); Phillips E., Portus M., Davids K., Renshaw I., Performance accuracy and functional variability in elite and developing fast bowlers, Journal of Science and Medicine in Sport, 15, pp. 182-188, (2012); Sachlikidis A., Salter C., A biomechanical comparison of dominant and non-dominant arm throws for speed and accuracy, Sports Biomechanics, 6, 3, pp. 334-344, (2007); Sherry A., Henson R.K., Conducting and interpreting canonical correlation analysis in personality research: A user friendly primer, Journal of Personality Assessment, 84, 1, pp. 37-48, (2005); Tabachnick B.G., Fidell L.S., Using multivariate statistics, (2007); Urbin M.A., Stodden D., Boros R., Shannon D., Examining the impulse-variability in overarm throwing, Motor Control, 16, pp. 19-30, (2012); Urbin M.A., Stodden D., Fischman M.G., Weimar W.H., Impulse-variability theory: Implications for ballistic, multijoint motor skill performance, Journal of Motor Behavior, 43, 3, pp. 275-283, (2011); van den Tillaar R., Ettema G., Influence of instruction on velocity and accuracy of overarm throwing, Perceptual and Motor Skills, 96, pp. 423-434, (2003); van den Tillaar R., Ettema G., Instructions emphasizing velocity, accuracy, or both in performance and kinematics of overarm throwing by experienced team handball players, Perceptual and Motor Skills, 97, pp. 731-742, (2003); Vereijken B., van Emmerik R.E.A., Whiting H.T.A., Newell K.M., Free(z)ing degrees of freedom in skill acquisition, Journal of Motor Behavior, 24, 1, pp. 133-142, (1992); Winter D., Biomechanics and motor control of human movement, (2009); Yang J.F., Scholz J., Learning a throwing task is associated with differential changes in the use of motor abundance, Experimental Brain Research, 163, 2, pp. 137-158, (2005)","","","Routledge","02640414","","JSSCE","25079111","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-84919865684" "Horenstein R.E.; Goudeau Y.R.; Lewis C.L.; Shefelbine S.J.","Horenstein, Rachel E. (56650859700); Goudeau, Yohann R. (57218700831); Lewis, Cara L. (35609612800); Shefelbine, Sandra J. (6507317962)","56650859700; 57218700831; 35609612800; 6507317962","Using magneto-inertial measurement units to pervasively measure hip joint motion during sports","2020","Sensors (Switzerland)","20","17","4970","1","19","18","7","10.3390/s20174970","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85090096616&doi=10.3390%2fs20174970&partnerID=40&md5=8e24c28a0af77c1e37beb51e19bb9b05","Department of Mechanical & Industrial Engineering, Northeastern University, Boston, 02115, MA, United States; Department of Physical Therapy & Athletic Training, Boston University, Boston, 02215, MA, United States; Department of Bioengineering, Northeastern University, Boston, 02115, MA, United States","Horenstein R.E., Department of Mechanical & Industrial Engineering, Northeastern University, Boston, 02115, MA, United States; Goudeau Y.R., Department of Mechanical & Industrial Engineering, Northeastern University, Boston, 02115, MA, United States; Lewis C.L., Department of Physical Therapy & Athletic Training, Boston University, Boston, 02215, MA, United States; Shefelbine S.J., Department of Mechanical & Industrial Engineering, Northeastern University, Boston, 02115, MA, United States, Department of Bioengineering, Northeastern University, Boston, 02115, MA, United States","The use of wireless sensors to measure motion in non-laboratory settings continues to grow in popularity. Thus far, most validated systems have been applied to measurements in controlled settings and/or for prescribed motions. The aim of this study was to characterize adolescent hip joint motion of elite-level athletes (soccer players) during practice and recreationally active peers (controls) in after-school activities using a magneto-inertial measurement unit (MIMU) system. Opal wireless sensors (APDM Inc., Portland OR, USA) were placed at the sacrum and laterally on each thigh (three sensors total). Hip joint motion was characterized by hip acceleration and hip orientation for one hour of activity on a sports field. Our methods and analysis techniques can be applied to other joints and activities. We also provide recommendations in order to guide future work using MIMUs to pervasively assess joint motions of clinical relevance. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.","Cam morphology; Hip joint motion; Magneto-inertial measurement units; Pervasive measurements; Wireless sensor motion-capture system","Acceleration; Adolescent; Biomechanical Phenomena; Hip Joint; Humans; Motion; Range of Motion, Articular; Sports; Wearable Electronic Devices; Hip prostheses; Wireless sensor networks; Analysis techniques; Hip joints; Inertial measurement unit; Joint motion; Soccer player; Three sensors; Wireless sensor; acceleration; adolescent; biomechanics; electronic device; hip; human; joint characteristics and functions; motion; sport; Sports","Morrow M.M.B., Lowndes B.R., Fortune E., Kaufman K.R., Hallbeck M.S., Validation of inertial measurement units for upper body kinematics, J. Appl. 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Biomech, 46, pp. 56-62, (2013); Fasel B., Sporri J., Schutz P., Lorenzetti S., Aminian K., An inertial sensor-based method for estimating the athlete’s relative joint center positions and center of mass kinematics in alpine ski racing, Front. Physiol, 8, (2017); Nagahara R., Kameda M., Neville J., Morin J.-B., Inertial measurement unit-based hip flexion test as an indicator of sprint performance, J. Sports Sci, 38, pp. 53-61, (2020); De Ruiter C.J., van Dieen J.H., Stride and Step Length Obtained with Inertial Measurement Units during Maximal Sprint Acceleration, Sports, 7, (2019); Wik E.H., Luteberget L.S., Spencer M., Activity Profiles in International Women’s Team Handball Using PlayerLoad, Int. J. Sports Physiol. 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Sports Med, 52, pp. 601-610, (2018); Agricola R., Bessems J.H.J.M., Ginai A.Z., Heijboer M.P., van der Heijden R.A., Verhaar J.A.N., Weinans H., Waarsing J.H., The Development of Cam-Type Deformity in Adolescent and Young Male Soccer Players, Am. J. Sports Med, 40, pp. 1099-1106, (2012); Agricola R., Heijboer M.P., Ginai A.Z., Roels P., Zadpoor A.A., Verhaar J.A.N., Weinans H., Waarsing J.H., A Cam Deformity Is Gradually Acquired During Skeletal Maturation in Adolescent and Young Male Soccer Players: A Prospective Study with Minimum 2-Year Follow-up, Am. J. Sports Med, 42, pp. 798-806, (2014); Lahner M., von Schulze Pellengahr C., Walter P.A., Lukas C., Falarzik A., Daniilidis K., von Engelhardt L.V., Abraham C., Hennig E.M., Hagen M., Biomechanical and functional indicators in male semiprofessional soccer players with increased hip alpha angles vs. amateur soccer players, BMC Musculoskelet. Disord, 15, (2014); Tak I., Weir A., Langhout R., Waarsing J.H., Stubbe J., Kerkhoffs G., Agricola R., The relationship between the frequency of football practice during skeletal growth and the presence of a cam deformity in adult elite football players, Br. J. Sports Med, 49, pp. 630-634, (2015); Johnson A.C., Shaman M.A., Ryan T.G., Femoroacetabular Impingement in Former High-Level Youth Soccer Players, Am. J. Sports Med, 40, pp. 1342-1346, (2012); Gerhardt M.B., Romero A.A., Silvers H.J., Harris D.J., Watanabe D., Mandelbaum B.R., The prevalence of radiographic hip abnormalities in elite soccer players, Am. J. Sports Med, 40, pp. 584-588, (2012); Siebenrock K.A., Ferner F., Noble P.C., Santore R.F., Werlen S., Mamisch T.C., The Cam-type Deformity of the Proximal Femur Arises in Childhood in Response to Vigorous Sporting Activity, Clin. Orthop. Relat. Res, 469, pp. 3229-3240, (2011); Siebenrock K.A., Behning A., Mamisch T.C., Schwab J.M., Growth Plate Alteration Precedes Cam-type Deformity in Elite Basketball Players, Clin. Orthop. Relat. Res, 471, pp. 1084-1091, (2013); Philippon M.J., Ho C.P., Briggs K.K., Stull J., LaPrade R.F., Prevalence of Increased Alpha Angles as a Measure of Cam-Type Femoroacetabular Impingement in Youth Ice Hockey Players, Am. J. Sports Med, 41, pp. 1357-1362, (2013); Lerebours F., Robertson W., Neri B., Schulz B., Youm T., Limpisvasti O., Prevalence of Cam-Type Morphology in Elite Ice Hockey Players, Am. J. Sports Med, 44, pp. 1024-1030, (2016); Siebenrock K.A., Kaschka I., Frauchiger L., Werlen S., Schwab J.M., Prevalence of Cam-Type Deformity and Hip Pain in Elite Ice Hockey Players Before and After the End of Growth, Am. J. Sports Med, 41, pp. 2308-2313, (2013); Bizzini M., Notzli H.P., Maffiuletti N.A., Femoroacetabular Impingement in Professional Ice Hockey Players: A Case Series of 5 Athletes after Open Surgical Decompression of the Hip, Am. J. Sports Med, 35, pp. 1955-1959, (2007); Nawabi D.H., Bedi A., Tibor L.M., Magennis E., Kelly B.T., The demographic characteristics of high-level and recreational athletes undergoing hip arthroscopy for femoroacetabular impingement: A sports-specific analysis, Arthroscopy, 30, pp. 398-405, (2014); Carter C.W., Bixby S., Yen Y.-M., Nasreddine A.Y., Kocher M.S., The relationship between cam lesion and physis in skeletally immature patients, J. Pediatr. Orthop, 34, pp. 579-584, (2014); Van Klij P., Heijboer M.P., Ginai A.Z., Verhaar J.A.N., Waarsing J.H., Agricola R., Cam morphology in young male football players mostly develops before proximal femoral growth plate closure: A prospective study with 5-year follow-up, Br. J. Sports Med, (2018); Siebenrock K.A., Wahab K.H.A., Werlen S., Kalhor M., Leunig M., Ganz R., Abnormal extension of the femoral head epiphysis as a cause of cam impingement, Clin. Orthop. Relat. Res, 418, pp. 54-60, (2004); Siebenrock K.A., Schwab J.M., The Cam-Type Deformity—What Is It: SCFE, Osteophyte, or a New Disease?, J. Pediatr. Orthop, 33, pp. S121-S125, (2013); Whiteside D., Deneweth J.M., Bedi A., Zernicke R.F., Goulet G.C., Femoroacetabular Impingement in Elite Ice Hockey Goaltenders: Etiological Implications of On-Ice Hip Mechanics, Am. J. Sports Med, 43, pp. 1689-1697, (2015); Sink E.L., Gralla J., Ryba A., Dayton M., Clinical Presentation of Femoroacetabular Impingement in Adolescents, J. Pediatric. Orthop, 28, pp. 806-811, (2008); Stull J.D., Philippon M.J., LaPrade R.F., “At-Risk” Positioning and Hip Biomechanics of the Peewee Ice Hockey Sprint Start, Am. J. Sports Med, 39, pp. 29-35, (2011); Lee C.B., Spencer H.T., Nygaard K.F., Femoral cam deformity due to anterior capsular force: A theoretical model with MRI and cadaveric correlation, J. Orthop, 13, pp. 331-336, (2016); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, J. Biomech. Eng, 105, pp. 136-144, (1983); Cole G.K., Nigg B.M., Ronsky J.L., Yeadon M.R., Application of the joint coordinate system to three-dimensional joint attitude and movement representation: A standardization proposal, J. Biomech. Eng, 115, pp. 344-349, (1993); Tadano S., Takeda R., Miyagawa H., Tadano S., Takeda R., Miyagawa H., Three dimensional gait analysis using wearable acceleration and gyro sensors based on quaternion calculations, Sensors, 13, pp. 9321-9343, (2013); Pataky T.C., Generalized n-dimensional biomechanical field analysis using statistical parametric mapping, J. Biomech, 43, pp. 1976-1982, (2010); Pataky T.C., Spatial resolution in plantar pressure measurement revisited, J. Biomech, 45, pp. 2116-2124, (2012); Turley G.A., Williams M.A., Wellings R.M., Griffin D.R., Evaluation of range of motion restriction within the hip joint, Med. Biol. Eng. Comput, 51, pp. 467-477, (2013); Wu G., Siegler S., Allard P., Kirtley C., Leardini A., Rosenbaum D., Whittle M., D'Lima D.D., Cristofolini L., Witte H., Et al., ISB recommendation on definitions of joint coordinate system of various joints for the reporting of human joint motion—Part I: Ankle, hip, and spine, J. Biomech, 35, pp. 543-548, (2002); Wu G., van der Helm F.C.T., Veeger H.E.J.D., Makhsous M., Van Roy P., Anglin C., Nagels J., Karduna A.R., McQuade K., Wang X., Et al., ISB recommendation on definitions of joint coordinate systems of various joints for the reporting of human joint motion–Part II: Shoulder, elbow, wrist and hand, J. 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Res, 5, pp. 387-392, (2016); Bachmann E.R., Yun X., Peterson C.W., An investigation of the effects of magnetic variations on inertial/magnetic orientation sensors, Proceedings of the IEEE International Conference on Robotics and Automation, 2, pp. 1115-1122, (2004); De Vries W.H.K., Veeger H.E.J., Baten C.T.M., van der Helm F.C.T., Magnetic distortion in motion labs, implications for validating inertial magnetic sensors, Gait Posture, 29, pp. 535-541, (2009); Nepple J.J., Vigdorchik J.M., Clohisy J.C., What Is the Association Between Sports Participation and the Development of Proximal Femoral Cam Deformity?: A Systematic Review and Meta-analysis, Am. J. Sports Med, 43, pp. 2833-2840, (2015); Roetenberg D., Luinge H.J., Baten C.T.M., Veltink P.H., Compensation of magnetic disturbances improves inertial and magnetic sensing of human body segment orientation, IEEE Trans. Neural Syst. Rehabil. Eng, 13, pp. 395-405, (2005); Sabatini A.M., Quaternion-based extended Kalman filter for determining orientation by inertial and magnetic sensing, IEEE Trans. Biomed. Eng, 53, pp. 1346-1356, (2006); Bergamini E., Ligorio G., Summa A., Vannozzi G., Cappozzo A., Sabatini A.M., Estimating orientation using magnetic and inertial sensors and different sensor fusion approaches: Accuracy assessment in manual and locomotion tasks, Sensors, 14, pp. 18625-18649, (2014); Takeda R., Lisco G., Fujisawa T., Gastaldi L., Tohyama H., Tadano S., Drift removal for improving the accuracy of gait parameters using wearable sensor systems, Sensors, 14, pp. 23230-23247, (2014); Yadav P., Shefelbine S.J., Gutierrez-Farewik E.M., Effect of growth plate geometry and growth direction on prediction of proximal femoral morphology, J. Biomech, 49, pp. 1613-1619, (2016); Carter D.R., Orr T.E., Fyhrie D.P., Schurman D.J., Influences of mechanical stress on prenatal and postnatal skeletal development, Clin. Orthop. Relat. Res, 219, pp. 237-250, (1987); Sadeghian S.M., Lewis C.L., Shefelbine S.J., Predicting growth plate orientation with altered hip loading: Potential cause of cam morphology, Biomech. Model. Mechanobiol, (2019); Wong M., Carter D.R., A theoretical model of endochondral ossification and bone architectural construction in long bone ontogeny, Anat. Embryol, 181, pp. 523-532, (1990); Shefelbine S.J., Carter D.R., Mechanobiological Predictions of Femoral Anteversion in Cerebral Palsy, Ann. Biomed. Eng, 32, pp. 297-305, (2004); Roels P., Agricola R., Oei E.H., Weinans H., Campoli G., Zadpoor A.A., Mechanical factors explain development of cam-type deformity, Osteoarthr. Cartil, 22, pp. 2074-2082, (2014)","S.J. Shefelbine; Department of Mechanical & Industrial Engineering, Northeastern University, Boston, 02115, United States; email: s.shefelbine@northeastern.edu; S.J. Shefelbine; Department of Bioengineering, Northeastern University, Boston, 02115, United States; email: s.shefelbine@northeastern.edu","","MDPI AG","14248220","","","32887517","English","Sensors","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85090096616" "Tlili M.; Mottet D.; Dupuy M.-A.; Pavis B.","Tlili, M. (6602410924); Mottet, D. (6603744043); Dupuy, M.-A. (7004884546); Pavis, B. (6507997222)","6602410924; 6603744043; 7004884546; 6507997222","Stability and phase locking in human soccer juggling","2004","Neuroscience Letters","360","1-2","","45","48","3","5","10.1016/j.neulet.2004.02.048","https://www.scopus.com/inward/record.uri?eid=2-s2.0-1842663311&doi=10.1016%2fj.neulet.2004.02.048&partnerID=40&md5=fff2d6796213be8cdace7456e47ca4c4","Université Marc Bloch, 67084 Strasbourg, 14 rue Descartes, France; Université de Montpellier 1, 34090 Montpellier, 700 av du Pic St Loup, France; Université d'Artois, 62800 Liévin, Chemin du Marquage, France; Université de Poitiers, 8600, Poitiers, 4 allée Jean Monet, France","Tlili M., Université Marc Bloch, 67084 Strasbourg, 14 rue Descartes, France; Mottet D., Université de Montpellier 1, 34090 Montpellier, 700 av du Pic St Loup, France; Dupuy M.-A., Université d'Artois, 62800 Liévin, Chemin du Marquage, France; Pavis B., Université de Poitiers, 8600, Poitiers, 4 allée Jean Monet, France","We explored a variant of juggling in which human adults were asked to rhythmically bounce a soccer ball with their dominant foot while standing on the other foot. Eight subjects performed the task at three prescribed heights and one free height condition. Kinematic analyses of foot movement at ball-foot impact showed that, for the smallest height, foot acceleration was positive or zero at impact, which indicates an active stabilization regime. Increasing juggling height resulted in foot acceleration becoming increasingly negative at impact, which is required for a passive dynamical stability regime. These results show that skilled soccer jugglers exploit the passive stability regime afforded by the task, but that similar stability can be achieved with an active stabilization strategy. © 2004 Elsevier Ireland Ltd. All rights reserved.","Cyclic behavior; Dynamics; Human; Juggling; Kinematics; Phase locking; Stability","Adult; Analysis of Variance; Biomechanics; Humans; Musculoskeletal Equilibrium; Soccer; acceleration; adult; article; clinical article; controlled study; foot; height; human; joint function; kinematics; normal human; priority journal; skill; sport; task performance","Aboaf E.W., Drucker S.M., Atkeson C.G., Task-level robot learning: Juggling a tennis ball more accurately, Proceedings of IEEE International Conference on Robotics and Automation, (1989); Beek P.J., Juggling Dynamics, (1989); Beek P.J., Beek W.J., Tools for constructing dynamical models of rhythmic movement, Hum. Mov. Sci., 7, pp. 301-342, (1988); Buhler M., Koditschek D.E., Kindlmann P.J., Planning and control of robotic juggling and catching tasks, Int. J. Robotics Res., 13, pp. 101-118, (1994); Dijkstra T.M.H., Katsumata H., De Rugy A., Sternad D., The dialogue between data and model: Passive stability and relaxation behavior in a ball bouncing task, J. Nonlinear Sci., (2004); Dupuy M.A., Mottet D., Ripoll H., The regulation of the release parameters in underarm precision throwing, J. Sports Sci., 18, pp. 375-382, (2000); Katsumata H., Zatsiorsky V., Sternad D., Control of ball-racket interactions in rhythmic propulsion of elastic and non-elastic balls, Exp. Brain Res., 149, pp. 17-29, (2003); Mottet D., Bootsma R.J., The dynamics of goal-directed rhythmical aiming, Biol. Cybern., 80, pp. 235-245, (1999); Schaal S., Sternad D., Atkeson C.G., One-handed juggling: Dynamical approaches to a rhythmic task, J. Mot. Behav., 28, pp. 165-183, (1996); Sternad D., Duarte M., Katsumata H., Schaal S., Dynamics of a bouncing ball in human performance, Phys. Rev. e, 63, (2000); Sternad D., Duarte M., Katsumata H., Schaal S., Bouncing a ball: Tuning into dynamic stability, J. Exp. Psychol. Hum. Percept. Perform., 27, pp. 1163-1185, (2001)","D. Mottet; Université de Montpellier 1, 34090 Montpellier, 700 av du Pic St Loup, France; email: denis.mottet@univ-montp1.fr","","","03043940","","NELED","15082175","English","Neurosci. Lett.","Article","Final","","Scopus","2-s2.0-1842663311" "Arslan S.; Ertat K.A.; Karamizrak S.O.; İŞleğen Ç.; Arslan T.","Arslan, Serdar (57202159979); Ertat, Kadir Ahmet (55928872600); Karamizrak, S Oğuz (7801632337); İŞleğen, Çetin (6506035541); Arslan, Tuğba (57202161335)","57202159979; 55928872600; 7801632337; 6506035541; 57202161335","Soccer match induced fatigue effect on landing biomechanic and neuromuscular performance","2019","Acta Medica Mediterranea","35","1","","391","397","6","6","10.19193/0393-6384_2019_1_64","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85060512932&doi=10.19193%2f0393-6384_2019_1_64&partnerID=40&md5=522b318a26ec5dee778145161155e4e4","Necmettin Erbakan University, Faculty of Health Sciences Konya, Turchey, Turkey; Ege University, Sports medicine, İzmir, Turchey, Turkey; Ege University, Health Sciences Institute, İzmir, Turchey, Turkey","Arslan S., Necmettin Erbakan University, Faculty of Health Sciences Konya, Turchey, Turkey; Ertat K.A., Ege University, Sports medicine, İzmir, Turchey, Turkey; Karamizrak S.O., Ege University, Sports medicine, İzmir, Turchey, Turkey; İŞleğen Ç., Ege University, Sports medicine, İzmir, Turchey, Turkey; Arslan T., Ege University, Health Sciences Institute, İzmir, Turchey, Turkey","Introduction: Insufficiencies in landing biomechanics and neuromuscular fatique that induced from sportive activities are risk factor for sport injuries. The combination of these factors increases the risk of sports injuries. Aim of the study was to evaluate the effec-tivness of soccer match induced fatigue on landing biomechanical parameters and neuromuscular performance. Materials and methods: Eighteen young professional male soccer players were included the study. Fatigue level was assessed with the Borg Rate of Perceived Exertion and Pain Scale (BRPEPS). Neuromuscular function measured using a force platform during drop jump test. The Landing Error Scoring System (LESS) was used for infucient of landing biomechanics. The night before the offical match when players were not tired was selected for the pre-match test. The post-match test was conducted in two hours following the end of the match. Results: The difference of pre and post match the BRPEPS was statistically significant (p0.05). There were no statistically significant differences between pre-match and post-match neuromuscular performance values. However, pre-match and post-match LESS scores were statistically significant different(p0.05). Conclusion: It was concluded thatfatigue that occurs in a soccer match disrupts landing biomechanics. Impairment of landing biomechanics doesn’t releated with neuromuscular function, but reduction of postural control, proprioceptive acuity and neromuscular control may affect landing biomechanics. © 2019 A. CARBONE Editore. All rights reserved.","Carbonmonoxide; Copeptin; Lactate; Poisoning","adult; ankle injury; Article; biomechanics; Borg Rate of Perceived Exertion and Pain Scale; clinical article; cross-sectional study; functional status assessment; hamstring muscle; hip injury; human; knee medial collateral ligament; landing biomechanics; Landing Error Scoring System; lateral malleolar fracture; ligament injury; low back pain; male; muscle strain; muscle weakness; neuromuscular function; pain assessment; pubalgia; scoring system; shoulder dislocation; soccer; soccer player; sport injury; young adult","Andersson H., Raastad T., Nilsson J., Paulsen G., Garthe I., Kadi F., Neuromuscular fatigue and recovery in elite female soccer: Effects of active recovery, Med Sci Sports Exerc, 40, 2, pp. 372-380, (2008); Ascensao A., Leite M., Rebelo A.N., Magalhaes S., Magalhaes J., Effects of cold water immersion on the recovery of physical performance and muscle damage following a one-off soccer match, J Sports Sci, 29, 3, pp. 217-225, (2011); Borg G.A., Psychophysical bases of perceived exertion, Med Sci Sports Exerc1982, 14, 5, pp. 377-381; Borotikar B.S., Newcomer R., Koppes R., McLean S.G., Combined effects of fatigue and decision making on female lower limb landing postures: Central and peripheral contributions to ACL injury risk, Clinical Biomechanics, 23, 1, pp. 81-92, (2008); Byrne C., Eston R., The effect of exercise-induced muscle damage on isometric and dynamic knee extensor strength and vertical jump performance, J Sports Sci, 20, 5, pp. 417-425, (2002); Chappell J.D., Herman D.C., Knight B.S., Kirkendall D.T., Garrett W.E., Yu B., Effect of fatigue on knee kinetics and kinematics in stop-jump tasks, Am J Sports Med, 33, 7, pp. 1022-1029, (2005); Cortes N., Greska E., Kollock R., Ambegaonkar J., Onate J.A., Changes in lower extremity biomechanics due to a short-term fatigue protocol, J Athl Train, 48, 3, pp. 306-313, (2013); De Ste Croix M.B., Priestley A.M., Lloyd R.S., Oliver J.L., ACL injury risk in elite female youth soccer: Changes in neuromuscular control of the knee following soccer-specific fatigue, Scand J Med Sci Sports, 25, 5, pp. e531-e538, (2015); Duffield R., Murphy A., Snape A., Minett G.M., Skein M., Post-match changes in neuromuscular function and the relationship to match demands in amateur rugby league matches, J Sci Med Sport, 15, pp. 238-243, (2012); Fox A.S., Bonacci J., McLean S.G., Spittle M., Saunders N., What is normal? Female lower limb kinematic profiles during athletic tasks used to examine anterior cruciate ligament injury risk: A systematic review, Sports Med, 44, 6, pp. 815-832, (2014); Gear W.S., Effect of different levels of localized muscle fatigue on knee position sense, J Sports Sci Med, 10, 4, pp. 725-730, (2011); Hassanlouei H., Arendt-Nielsen L., Kersting U.G., Falla D., Effect of exercise-induced fatique on postural control of the knee, J Electromyogr Kinesiol, 22, pp. 342-347, (2012); Hewett T.E., Torg J.S., Boden B.P., Video analysis of trunk and knee motion during noncontact anterior cruciate ligament injury in female athletes: Lateral trunk and knee abduction motion are combined components of the injury mechanism, Br J Sports Med, 43, 6, pp. 417-422, (2009); Hoffman J.R., Nusse V., Kang J., The effect of an intercollegiate soccer game on maximal power performance, Can J Appl Physiol, 28, 6, pp. 807-817, (2003); Iguchi J., Tateuchi H., Taniguchi M., Ichihashi N., The effect of sex and fatigue on lower limb kinematics, kinetics, and muscle activity during unanticipated side-step cutting, Knee Surg Sports Traumatol Arthrosc, 22, 1, pp. 41-48, (2014); Junge A., Dvorak J., Soccer injuries: A review on incidence and prevention, Sports Med, 34, 13, pp. 929-938, (2004); Lehnert M., De Ste Croix M., Zaatar A., Hughes J., Varekova R., Lastovicka O., Muscular and neuromuscular control following soccer-specific exercise in Male youth: Changes in injury risk mechanisms, Scand J Med Sci Sports, (2016); Liederbach M., Kremenic I.J., Orishimo K.F., Pappas E., Hagins M., Comparison of landing biomechanics between Male and female dancers and athletes. Part 2: Influence of fatigue and implications for anterior cruciate ligament injury, Am J Sports Med, 42, 5, pp. 1089-1095, (2014); Longpre H.S., Potvin J.R., Maly M.R., Biomechanical changes at the knee after lower limb fatique in healthy young women, Clin Biomech (Bristol, Avon), 28, 4, pp. 441-447, (2013); Lucci S., Cortes N., Van Lunen B., Ringleb S., Onate J., Knee and hip sagittal and transverse plane changes after two fatigue protocols, J Sci Med Sport, 14, 5, pp. 453-459, (2011); Magalhaes J., Rebelo A., Oliveira E., Silva J.R., Marques F., Ascensao A., Impact of Loughborough Intermittent Shuttle Test versus soccer match on physiological, biochemical and neuromuscular parameters, Eur J Appl Physiol, 108, pp. 39-48, (2010); McLean S.G., Samorezov J.E., Fatigue-induced ACL injury risk stems from a degradation in central control, Med Sci Sports Exerc, 41, 8, pp. 1661-1672, (2009); McLellan C.P., Lovell D.I., Gass G.C., Markers of post-match fatigue in professional rugby league players, J Strength Cond Res, 25, 4, pp. 1030-1039, (2011); Michaelidis M., Koumantakis G.A., Effects of knee injury primary prevention programs on anterior cruciate ligament injury rates in female athletes in different sports: A systematic review, Phys Ther Sport, 15, 3, pp. 200-210, (2014); Moran K.A., Clarke M., Reilly F., Wallace E.S., Brabazon D., Marshall B., Does endurance fatique increase the risk of injury when performing drop jumps?, J Strength Cond Res, 23, 5, pp. 1448-1455, (2009); Norcross M.F., Lewek M.D., Padua D.A., Shultz S.J., Weinhold P.S., Blackburn J.T., Lower extremity energy absorption and biomechanics during landing. Part I: Sagittal-plane energy absorption analyses, J Athl Train, 48, 6, pp. 748-756, (2013); Nosaka K., Abbiss C., Watson G., Wall B., Suzuki K., Laursen P., Recovery following an Ironman triathlon: A case study, European Journal of Sport Science, 10, 2, pp. 169-1165, (2010); Orishimo K.F., Liederbach M., Kremenic I.J., Hagins M., Pappas E., Comparison of landing biomechanics between Male and female dancers and athletes, part 1: Influence of sex on risk of anterior cruciate ligament injury, Am J Sports Med, 42, 5, pp. 1082-1088, (2014); Padua D.A., DiStefano L.J., Beutler A.I., De la Motte S.J., DiStefano M.J., Marshall S.W., The Landing Error Scoring System as a screening tool for an anterior cruciate ligament injury-prevention program in elite-youth soccer athletes, J Athl Train, 50, 6, pp. 589-595, (2015); Padua D.A., Marshall S.W., Boling M.C., Thigpen C.A., Garrett W.E., Beutler A.I., The Landing Error Scoring System (LESS) is a valid and reliable clinical assessment tool of jump-landing biomechanics: The JUMP-ACL study, Am J Sports Med, 37, 10, pp. 1996-2002, (2009); Papa E.V., Foreman K.B., Dibble L.E., Effects of age and acute muscle fatigue on reactive postural control in healthy adults, Clin Biomech (Bristol, Avon), 30, 10, pp. 1108-1113, (2015); Pappas E., Sheikhzadeh A., Hagins M., Nordin M., The effect of gender and fatigue on the biomechanics of bilateral landings from a jump: Peak values, J Sports Sci Med, 6, 1, pp. 77-84, (2007); Ribeiro F., Santos F., Goncalves P., Oliveira J., Effects of volleyball match-induced fatigue on knee joint position sense, European Journal of Sport Science, 8, 6, pp. 397-402, (2008); Shimokochi Y., Shultz S.J., Mechanisms of noncontact anterior cruciate ligament ınjury, J Athl Train, 43, 4, pp. 396-408, (2008); Shultz S.J., Schmitz R.J., Cone J.R., Henson R.A., Montgomery M.M., Pye M.L., Tritsch A.J., Changes in fatigue, multiplanar knee laxity, and landing biomechanics during intermittent exercise, J Athl Train, 50, 5, pp. 486-497, (2015); Thorlund J.B., Michalsik L.B., Madsen K., Aagaard P., Acute fatigue-induced changes in muscle mechanical properties and neuromuscular activity in elite handball players following a handball match, Scand J Med Sci Sports, 18, 4, pp. 462-472, (2008); Wesley C.A., Aronson P.A., Docherty C.L., Lower Extremity Landing Biomechanics in Both Sexes After a Functional Exercise Protocol, J Athl Train, 50, 9, pp. 914-920, (2015); Zahradnik D., Jandacka D., Uchytil J., Farana R., Hamill J., Lower extremity mechanic during landing after a voley-ball block as a risk factor for anterior cruciate ligament injury, Phys Ther Sport, 16, 1, pp. 53-58, (2015); Zemkova E., Hamar D., The Effect ofd soccer match induced fatigue on neuromuscular performance, Kinesiology, 2, pp. 195-202, (2009)","S. Arslan; Büyük İhsaniye, Selçuklu/Konya, Mahallesi Kazım Karabekir Caddesi No:82, Turkey; email: etsarslan@gmail.com","","A. CARBONE Editore","03936384","","AMMCC","","English","Acta Med. Mediterr.","Article","Final","","Scopus","2-s2.0-85060512932" "Kraus K.; Schütz E.; Doyscher R.","Kraus, Kornelius (56041021500); Schütz, Elisabeth (56574825700); Doyscher, Ralf (55776749600)","56041021500; 56574825700; 55776749600","The Relationship between a Jump-Landing Task and Functional Movement Screen Items: A Validation Study","2019","Journal of Strength and Conditioning Research","33","7","","1855","1863","8","5","10.1519/JSC.0000000000002121","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85068821123&doi=10.1519%2fJSC.0000000000002121&partnerID=40&md5=8ffee1e6cd651ee2f0a4fe48c036b78f","Department of Sports Science, Munich University of Federal Armed Forces, Neubiberg, Germany; Medical Department, University of Munich (LMU), Munich, Germany; Centrum for Orthopedics and Trauma Surgery, Department of Sports Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany","Kraus K., Department of Sports Science, Munich University of Federal Armed Forces, Neubiberg, Germany; Schütz E., Medical Department, University of Munich (LMU), Munich, Germany; Doyscher R., Centrum for Orthopedics and Trauma Surgery, Department of Sports Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany","Kraus, K, Schütz, E, and Doyscher, R. The relationship between a jump-landing task and functional movement screen items: a validation study. J Strength Cond Res 33(7): 1855-1863, 2019 - Sports injuries and athletic performance are complex areas, which are characterized by manifold interdependencies. The landing error scoring system (LESS) is a valid screening tool to examine bilateral jump-landing mechanics, whereas the Functional Movement Screen (FMS) items are thought to operationalize flexibility and motor behavior during low-intense bodyweight patterns. The aim of the study was to explore possible interdependency of the diagnostic information of these screening tools. Fifty-three athletes (age 23.3 ± 2.1 years) were tested in a sport scientific laboratory. In detail, 31 professional soccer players (third division) and 22 collegiate athletes were studied. Linear, partial correlational, and cluster analysis were performed to examine possible trends. Generally, the sportsmen achieved a LESS score of 6.6 ± 2 and a jumping height of 37 ± 7.8 cm. Partial correlational analysis indicates that trunk control (r = 0.4; p < 0.01) is moderately related to landing mechanics, which in turn was negatively related on LESS height (r = -0.67, p < 0.01). In addition, clustering showed by trend that a higher active straight leg raise (ASLR) score is related to better landing mechanics (ASLR score 1: LESS 6.9 ± 1.8; n = 15 vs. ASLR score 3: LESS 5.6 ± 2.1; n = 10). On the task-specific level, jump-landing mechanics were directly related to jumping performance in this cohort with poor mechanics. On unspecific analysis level, kinetic chain length (ASLR) and trunk control have been identified as potential moderator variables for landing mechanics, indicating that these parameters can limit landing mechanics and ought to be optimized within the individual's context. A potential cognitive strategy shift from internal (FMS) to external focus (LESS) and different muscle recruitment patterns are potential explanations for the nonsignificant linear relationship between the FMS and LESS data. © 2019 The Author(s). Published by Wolters Kluwer Health, Inc.","FMS; injury prevention; LESS; motor control; motor screening","Adolescent; Adult; Athletic Injuries; Athletic Performance; Biomechanical Phenomena; Exercise Test; Female; Humans; Male; Movement; Soccer; Young Adult; adolescent; adult; athletic performance; biomechanics; exercise test; female; human; male; movement (physiology); pathophysiology; physiology; procedures; soccer; sport injury; validation study; young adult","Aagaard P., Simonsen E.B., Magnusson S.P., Larsson B., Dyhre-Poulsen P., A new concept for isokinetic hamstring: Quadriceps muscle strength ratio, Am J Sports Med, 26, pp. 231-237, (1998); Balsalobre-Fernandez C., Glaister M., Lockey R.A., The validity and reliability of an iPhone app for measuring vertical jump performance, J Sports Sci, 33, pp. 1574-1579, (2015); Beardsley C., Contreras B., The functional movement screen: A review, J Strength Cond, 36, pp. 72-80, (2014); Bosco C., Methods of functional testing during rehabilitation exercises, Rehabilitation of Sports Injuries, pp. 11-22, (2001); 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Wellmon R.H., Gulick D.T., Paterson M.L., Gulick C.N., Validity and reliability of 2 goniometric mobile apps: Device, application, and examiner factors, J Sport Rehabil, 25, pp. 371-379, (2016); Whiteside D., Deneweth J.M., Pohorence M.A., Sandoval B., Russell J.R., McLean S.G., Zernicke R.F., Goulet G.C., Grading the functional movement screen: A comparison of manual (real-time) and objective methods, J Strength Cond Res, 30, pp. 924-933, (2016); Wiemann K., Tidow G., Relative activity of hip and knee extensors in sprinting-implications for training, N Stud Athl, 10, pp. 29-49, (1995); Windt J., Zumbo B.D., Sporer B., MacDonald K., Gabbett T.J., Why do workload spikes cause injuries, and which athletes are at higher risk? Mediators and moderators in workload-injury investigations, Br J Sports Med, 51, pp. 993-994, (2017); Zumbo B.D., Validity: Foundational issues and statistical methodology, Handbook of Statistics: Psychometrics, pp. 45-79, (2014)","K. Kraus; Department of Sports Science, Munich University of Federal Armed Forces, Neubiberg, Germany; email: kornelius.kraus@unibw.de","","NSCA National Strength and Conditioning Association","10648011","","","28859011","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-85068821123" "Miyagi R.; Sairyo K.; Sakai T.; Yoshioka H.; Yasui N.; Dezawa A.","Miyagi, Ryo (43761302300); Sairyo, Koichi (7003570115); Sakai, Toshinori (35485360900); Yoshioka, Hiroshi (7401586591); Yasui, Natsuo (7102544224); Dezawa, Akira (6603185155)","43761302300; 7003570115; 35485360900; 7401586591; 7102544224; 6603185155","Two types of laminolysis in adolescent athletes","2012","Journal of Orthopaedics and Traumatology","13","4","","225","228","3","6","10.1007/s10195-012-0206-y","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878034417&doi=10.1007%2fs10195-012-0206-y&partnerID=40&md5=57bb7f766bbba0499f139d86300f386a","Department of Radiological Sciences, University of California, Irvine, CA, United States; Department of Orthopedic Surgery, University of California, Irvine, CA, United States; Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, Tokushima, Japan; Department of Orthopaedic Surgery, Teikyo University, Mizonokuchi Hospital, Takatsu-ku, Kawasaki 213-8507, 3-8-3 Mizonokuchi, Japan","Miyagi R., Department of Radiological Sciences, University of California, Irvine, CA, United States, Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, Tokushima, Japan; Sairyo K., Department of Orthopaedic Surgery, Teikyo University, Mizonokuchi Hospital, Takatsu-ku, Kawasaki 213-8507, 3-8-3 Mizonokuchi, Japan; Sakai T., Department of Orthopedic Surgery, University of California, Irvine, CA, United States, Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, Tokushima, Japan; Yoshioka H., Department of Radiological Sciences, University of California, Irvine, CA, United States; Yasui N., Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, Tokushima, Japan; Dezawa A., Department of Orthopaedic Surgery, Teikyo University, Mizonokuchi Hospital, Takatsu-ku, Kawasaki 213-8507, 3-8-3 Mizonokuchi, Japan","Bony defects in the spine are divided into three main types: spondylolysis, pediculolysis, and laminolysis. Lumbar spondylolysis is a well-known stress fracture that occurs frequently in adolescent athletes. Pediculolysis means stress fracture of the pedicle, which sometimes occurs subsequent to unilateral spondylolysis. Laminolysis is a rarely reported stress fracture similar to spondylolysis and pediculolysis that sometimes causes low back pain (LBP). However, its pathomechanism has not been elucidated. Recently, we encountered four adolescent athletes with symptomatic laminolysis. Mean age was 15.8 (range 15-17) years. All subjects reported severe LBP exacerbated by extension of the lumbar spine, and radiology revealed two types of laminolysis: hemilaminar type and intralaminar type. To elucidate the mechanisms of each type, we reviewed a biomechanical study, and found that the hemilaminar type was thought to be subsequent to contralateral spondylolysis, while the intralaminar type might be a result of a stress fracture due to repetitive extension loading. © 2012 The Author(s).","Laminar fracture; Laminolysis; Lumbar spine; Retroisthmic cleft; Spondylolysis; Stress fracture","Adolescent; Biomechanics; Fractures, Stress; Humans; Low Back Pain; Lumbar Vertebrae; Magnetic Resonance Imaging; Male; Pseudarthrosis; Spinal Fractures; Spine; Spondylolysis; Sports; Tomography, X-Ray Computed; lidocaine; steroid; adolescent; article; athlete; ballet dancer; baseball; brace; case report; computer assisted tomography; hemilaminar type laminolysis; human; intralaminar type laminolysis; low back pain; male; nuclear magnetic resonance imaging; priority journal; pseudarthrosis; soccer; spine disease; spine surgery; spondylolysis; wrestling; biomechanics; injury; low back pain; lumbar vertebra; pathology; pathophysiology; pseudarthrosis; radiography; spine; spine fracture; spondylolysis; sport; stress fracture","Sairyo K., Katoh S., Sakamaki T., Komatsubara S., Endo K., Yasui N., Three successive stress fractures at the same vertebral level in an adolescent baseball player, American Journal of Sports Medicine, 31, 4, pp. 606-610, (2003); Wiltse L.L., The etiology of spondylolisthesis, J Bone Joint Surg, 44, pp. 539-560, (1962); Fredrickson B.E., Baker D., McHolick W.J., The natural history of spondylolysis and spondylolisthesis, Journal of Bone and Joint Surgery - Series A, 66, 5, pp. 699-707, (1984); Sakai T., Sairyo K., Takao S., Nishitani H., Yasui N., Incidence of lumbar spondylolysis in the general population in Japan based on multidetector computed tomography scans from two thousand subjects, Spine (Phil Pa 1976), 34, pp. 2346-2350, (2009); Sairyo K., Katoh S., Sasa T., Yasui N., Goel V.K., Vadapalli S., Masuda A., Biyani A., Ebraheim N., Athletes with unilateral spondylolysis are at risk of stress fracture at the contralateral pedicle and pars interarticularis: A clinical and biomechanical study, American Journal of Sports Medicine, 33, 4, pp. 583-590, (2005); Sakai T., Sairyo K., Takao S., Kosaka H., Yasui N., Adolescents with symptomatic laminolysis: Report of two cases, J Orthop Traumatol, 11, 3, pp. 189-193, (2010); Sairyo K., Goel V.K., Vadapalli S., Vishnubhotla S.L., Biyani A., Ebraheim N., Terai T., Sakai T., Biomechanical comparison of lumbar spine with or without spina bifida occulta. A finite element analysis, Spinal Cord, 44, 7, pp. 440-444, (2006); Micheli L.J., Wood R., Back pain in young athletes. Significant differences from adults in causes and patterns, Arch Pediatr Adolesc Med, 149, 1, pp. 15-18, (1995); Johansen J.G., Hemminghytt S., Haughton V.M., CT Appearance of the Retroisthmic Cleft AJNR, 5, pp. 835-836, (1984); Sairyo K., Katoh S., Komatsubara S., Terai T., Yasui N., Goel V.K., Et al., Spondylolysis fracture angle in children and adolescents on CT indicates the facture producing force vector: A biomechanical rationale, Internet J Spine Surg., (2005)","K. Sairyo; Department of Orthopaedic Surgery, Teikyo University, Mizonokuchi Hospital, Takatsu-ku, Kawasaki 213-8507, 3-8-3 Mizonokuchi, Japan; email: sairyokun@hotmail.com","","","15909999","","JOTOB","22815057","English","J. Orthop. Traumatol.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-84878034417" "Grooms D.R.; Diekfuss J.A.; Slutsky-Ganesh A.B.; Ellis J.D.; Criss C.R.; Thomas S.M.; DiCesare C.A.; Wong P.; Anand M.; Lamplot J.; Simon J.E.; Myer G.D.","Grooms, Dustin R. (55616564700); Diekfuss, Jed A. (56784267000); Slutsky-Ganesh, Alexis B. (57219537139); Ellis, Jonathan D. (57202255000); Criss, Cody R. (57214774972); Thomas, Staci M. (55772425700); DiCesare, Christopher A. (55620685100); Wong, Phil (57824977300); Anand, Manish (56583686200); Lamplot, Joseph (57203176430); Simon, Janet E. (55449179200); Myer, Gregory D. (6701852696)","55616564700; 56784267000; 57219537139; 57202255000; 57214774972; 55772425700; 55620685100; 57824977300; 56583686200; 57203176430; 55449179200; 6701852696","Preliminary Report on the Train the Brain Project, Part I: Sensorimotor Neural Correlates of Anterior Cruciate Ligament Injury Risk Biomechanics","2022","Journal of Athletic Training","57","9-10","","902","910","8","4","10.4085/1062-6050-0547.21","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146363754&doi=10.4085%2f1062-6050-0547.21&partnerID=40&md5=52f30693403a6ddf65106be12b39f4ca","Ohio Musculoskeletal and Neurological Institute, College of Health Sciences and Professions, Ohio University, Athens, GA, United States; Division of Physical Therapy, School of Rehabilitation and Communication Sciences, College of Health Sciences and Professions, Ohio University, Athens, GA, United States; Division of Athletic Training, School of Applied Health Sciences and Wellness, College of Health Sciences and Professions, Ohio University, Athens, GA, United States; Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, United States; Emory Sports Medicine Center, Atlanta, GA, United States; Department of Orthopaedics, Emory University, School of Medicine, Atlanta, GA, United States; Department of Kinesiology, University of North Carolina Greensboro, United States; University of Cincinnati, Medical Center, OH, United States; Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, OH, United States; Exponent Inc, Farmington Hills, MI, United States; Division of Musculoskeletal Imaging, Department of Radiology and Imaging Sciences, Emory University, School of Medicine, Atlanta, GA, United States; The Micheli Center for Sports Injury Prevention, Waltham, MA, United States","Grooms D.R., Ohio Musculoskeletal and Neurological Institute, College of Health Sciences and Professions, Ohio University, Athens, GA, United States, Division of Physical Therapy, School of Rehabilitation and Communication Sciences, College of Health Sciences and Professions, Ohio University, Athens, GA, United States, Division of Athletic Training, School of Applied Health Sciences and Wellness, College of Health Sciences and Professions, Ohio University, Athens, GA, United States; Diekfuss J.A., Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, United States, Emory Sports Medicine Center, Atlanta, GA, United States; Slutsky-Ganesh A.B., Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, United States, Emory Sports Medicine Center, Atlanta, GA, United States, Department of Orthopaedics, Emory University, School of Medicine, Atlanta, GA, United States, Department of Kinesiology, University of North Carolina Greensboro, United States; Ellis J.D., University of Cincinnati, Medical Center, OH, United States; Criss C.R., Ohio Musculoskeletal and Neurological Institute, College of Health Sciences and Professions, Ohio University, Athens, GA, United States; Thomas S.M., Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, OH, United States; DiCesare C.A., Exponent Inc, Farmington Hills, MI, United States; Wong P., Division of Musculoskeletal Imaging, Department of Radiology and Imaging Sciences, Emory University, School of Medicine, Atlanta, GA, United States; Anand M., Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, United States, Emory Sports Medicine Center, Atlanta, GA, United States, Department of Orthopaedics, Emory University, School of Medicine, Atlanta, GA, United States; Lamplot J., Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, United States, Emory Sports Medicine Center, Atlanta, GA, United States, Department of Orthopaedics, Emory University, School of Medicine, Atlanta, GA, United States; Simon J.E., Ohio Musculoskeletal and Neurological Institute, College of Health Sciences and Professions, Ohio University, Athens, GA, United States, Division of Athletic Training, School of Applied Health Sciences and Wellness, College of Health Sciences and Professions, Ohio University, Athens, GA, United States; Myer G.D., Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, United States, Emory Sports Medicine Center, Atlanta, GA, United States, Department of Orthopaedics, Emory University, School of Medicine, Atlanta, GA, United States, The Micheli Center for Sports Injury Prevention, Waltham, MA, United States","Context: Anterior cruciate ligament injury commonly occurs via noncontact motor coordination errors that result in excessive multiplanar loading during athletic movements. Preventing motor coordination errors requires neural sensorimotor integration activity to support knee-joint neuromuscular control, but the underlying neural mechanisms driving injury-risk motor control are not well understood. Objective: To evaluate brain activity differences for knee sensorimotor control between athletes with high or low injuryrisk mechanics. Design: Case-control study. Setting: Research laboratory. Patients or Other Participants: Of 38 female high school soccer players screened, 10 were selected for analysis based on magnetic resonance imaging compliance, injury-risk classification via 3-dimensional biomechanics during a drop vertical jump, and matching criteria to complete neuroimaging during knee motor tasks. Main Outcome Measure(s): Peak knee-abduction moment during landing was used for group allocation into the high (≥21.74 newton meters [Nm], n = 9) or low (≤10.6 Nm, n = 11) injury-risk classification (n = 11 uncategorized, n = 7 who were not compliant with magnetic resonance imaging). Ten participants (5 high risk, 5 low risk) with adequate data were matched and compared across 2 neuroimaging paradigms: unilateral knee-joint control and unilateral multijoint leg press against resistance. Results: Athletes with high injury-risk biomechanics had less neural activity in 1 sensory-motor cluster for isolated kneejoint control (precuneus, peak Z score = 4.14, P ≤ .01, 788 voxels) and greater brain activity for the multijoint leg press in 2 cognitive-motor clusters: the frontal cortex (peak Z score=4.71, <.01, 1602 voxels) and posterior cingulate gyrus (peak Z score = 4.43, <.01, 725 voxels) relative to the low injury-risk group. Conclusions: The high injury-risk group's lower relative engagement of neural sensory resources controlling the knee joint may elevate demand on cognitive motor resources to control loaded multijoint action. The neural activity profile in the high injury-risk group may manifest as a breakdown in neuromuscular coordination, resulting in elevated knee-abduction moments during landing. © 2022 the National Athletic Trainers' Association, Inc.","functional magnetic resonance imaging; injury prevention; landing neuromuscular control; motion capture; neuroimaging; sensorimotor control","Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Brain; Case-Control Studies; Female; Humans; Knee Joint; anterior cruciate ligament injury; biomechanics; brain; case control study; diagnostic imaging; female; human; knee","Global recommendations on physical activity for health, (2010); Luc B, Gribble PA, Pietrosimone BG., Osteoarthritis prevalence following anterior cruciate ligament reconstruction: a systematic review and numbers-needed-to-treat analysis, J Athl Train, 49, 6, pp. 806-819, (2014); Mather RC, Koenig L, Kocher MS, Et al., Societal and economic impact of anterior cruciate ligament tears, J Bone Joint Surg Am, 95, 19, pp. 1751-1759, (2013); Swanik CB., Brains and sprains: the brain's role in noncontact anterior cruciate ligament injuries, J Athl Train, 50, 10, pp. 1100-1102, (2015); Diekfuss JA, Grooms DR, Yuan W, Et al., Does brain functional connectivity contribute to musculoskeletal injury?. A preliminary prospective analysis of a neural biomarker of ACL injury risk, J Sci Med Sport, 22, 2, pp. 169-174, (2019); Hewett TE, Myer GD, Ford KR, Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Bonnette S, Diekfuss JA, Grooms DR, Et al., Electrocortical dynamics differentiate athletes exhibiting low- and high- ACL injury risk biomechanics, Psychophysiology, 57, 4, (2020); Powers CM, Fisher B., Mechanisms underlying ACL injuryprevention training: the brain-behavior relationship, J Athl Train, 45, 5, pp. 513-515, (2010); Myer GD, Ford KR, Khoury J, Hewett TE., Three-dimensional motion analysis validation of a clinic-based nomogram designed to identify high ACL injury risk in female athletes, Phys Sportsmed, 39, 1, pp. 19-28, (2011); Grooms DR, Diekfuss JA, Ellis JD, Et al., A novel approach to evaluate brain activation for lower extremity motor control, J Neuroimaging, 29, 5, pp. 580-588, (2019); Desikan RS, Segonne F, Fischl B, Et al., An automated labeling system for subdividing the human cerebral cortex on MRI scans into gyral based regions of interest, Neuroimage, 31, 3, pp. 968-980, (2006); Smith SM, Jenkinson M, Woolrich MW, Et al., Advances in functional and structural MR image analysis and implementation as FSL, Neuroimage, 23, pp. S208-S219, (2004); Smith AJ, Blumenfeld H, Behar KL, Rothman DL, Shulman RG, Hyder F., Cerebral energetics and spiking frequency: the neurophysiological basis of fMRI, Proc Natl Acad Sci U S A, 99, 16, pp. 10765-10770, (2002); Jenkinson M, Bannister P, Brady M, Smith S., Improved optimization for the robust and accurate linear registration and motion correction of brain images, Neuroimage, 17, 2, pp. 825-841, (2002); Jenkinson M, Smith S., A global optimisation method for robust affine registration of brain images, Med Image Anal, 5, 2, pp. 143-156, (2001); Woolrich MW, Ripley BD, Brady M, Smith SM., Temporal autocorrelation in univariate linear modeling of FMRI data, Neuroimage, 14, 6, pp. 1370-1386, (2001); Worsley KJ., Statistical analysis of activation images, Functional Magnetic Resonance Imaging: An Introduction to Methods, pp. 251-270, (2001); Cavanna AE, Trimble MR., The precuneus: a review of its functional anatomy and behavioural correlates, Brain, 129, 3, pp. 564-583, (2006); Oshio R, Tanaka S, Sadato N, Sokabe M, Hanakawa T, Honda M., Differential effect of double-pulse TMS applied to dorsal premotor cortex and precuneus during internal operation of visuospatial information, Neuroimage, 49, 1, pp. 1108-1115, (2010); Wenderoth N, Debaere F, Sunaert S, Swinnen SP., The role of anterior cingulate cortex and precuneus in the coordination of motor behaviour, Eur J Neurosci, 22, 1, pp. 235-246, (2005); Grooms DR, Onate JA., Neuroscience application to noncontact anterior cruciate ligament injury prevention, Sports Health, 8, 2, pp. 149-152, (2016); Kapreli E, Athanasopoulos S, Gliatis J, Et al., Anterior cruciate ligament deficiency causes brain plasticity: a functional MRI study, Am J Sports Med, 37, 12, pp. 2419-2426, (2009); Grooms DR, Criss CR, Simon JE, Haggerty AL, Wohl TR., Neural correlates of knee extension and flexion force control: a kineticallyinstrumented neuroimaging study, Front Hum Neurosci, 14, (2020); Mehta JP, Verber MD, Wieser JA, Schmit BD, Schindler-Ivens SM., The effect of movement rate and complexity on functional magnetic resonance signal change during pedaling, Motor Control, 16, 2, pp. 158-175, (2012); Reuter-Lorenz PA, Cappell KA., Neurocognitive aging and the compensation hypothesis, Curr Dir Psychol Sci, 17, 3, pp. 177-182, (2008); Anand M, Diekfuss JA, Slutsky-Ganesh AB, Et al., Integrated 3D motion analysis with functional magnetic resonance neuroimaging to identify neural correlates of lower extremity movement, J Neurosci Methods, 355, (2021); Herman DC, Barth JT., Drop-jump landing varies with baseline neurocognition: implications for anterior cruciate ligament injury risk and prevention, Am J Sports Med, 44, 9, pp. 2347-2353, (2016); Swanik CB, Covassin T, Stearne DJ, Schatz P., The relationship between neurocognitive function and noncontact anterior cruciate ligament injuries, Am J Sports Med, 35, 6, pp. 943-948, (2007); Dunst B, Benedek M, Jauk E, Et al., Neural efficiency as a function of task demands, Intelligence, 42, 100, pp. 22-30, (2014); Del Percio C, Babiloni C, Marzano N, Et al., Neural efficiency"" of athletes' brain for upright standing: a high-resolution EEG study, Brain Res Bull, 79, 3-4, pp. 193-200, (2009); Costanzo ME, VanMeter JW, Janelle CM, Et al., Neural efficiency in expert cognitive-motor performers during affective challenge, J Mot Behav, 48, 6, pp. 573-588, (2016); Di Domenico SI, Rodrigo AH, Ayaz H, Fournier MA, Ruocco AC., Decision-making conflict and the neural efficiency hypothesis of intelligence: a functional near-infrared spectroscopy investigation, Neuroimage, 109, pp. 307-317, (2015); Beck NA, Lawrence JTR, Nordin JD, DeFor TA, Tompkins M., ACL tears in school-aged children and adolescents over 20 years, Pediatrics, 139, 3, (2017); Grooms DR, Kiefer AW, Riley MA, Et al., Brain-behavior mechanisms for the transfer of neuromuscular training adaptions to simulated sport: initial findings from the Train the Brain Project, J Sport Rehabil, 27, 5, pp. 1-5, (2018); Diekfuss JA, Grooms DR, Hogg JA, Et al., Targeted application of motor learning theory to leverage youth neuroplasticity for enhanced injury-resistance and exercise performance: OPTIMAL PREP, J Sci Sport Exerc, 3, 1, pp. 17-36, (2021); Chmielewski TL, Hurd WJ, Rudolph KS, Axe MJ, Snyder-Mackler L., Perturbation training improves knee kinematics and reduces muscle co-contraction after complete unilateral anterior cruciate ligament rupture, Phys Ther, 85, 8, pp. 740-749, (2005); Krosshaug T, Steffen K, Kristianslund E, Et al., The vertical drop jump is a poor screening test for ACL injuries in female elite soccer and handball players: a prospective cohort study of 710 athletes, Am J Sports Med, 44, 4, pp. 874-883, (2016)","D.R. Grooms; Ohio Musculoskeletal and Neurological Institute, W283 Grover Center, Ohio University, Athens, 45701, United States; email: groomsd@ohio.edu","","National Athletic Trainers' Association Inc.","10626050","","JATTE","35271712","English","J. Athl. Train.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85146363754" "Hasan H.; Davids K.; Chow J.Y.; Kerr G.","Hasan, Hosni (42861506900); Davids, Keith (7003449117); Chow, Jia Yi (12776077700); Kerr, Graham (7102158133)","42861506900; 7003449117; 12776077700; 7102158133","Changes in organisation of instep kicking as a function of wearing compression and textured materials","2017","European Journal of Sport Science","17","3","","294","302","8","7","10.1080/17461391.2016.1241829","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84991037389&doi=10.1080%2f17461391.2016.1241829&partnerID=40&md5=d08a2433c25f0d98e53b83d2a03f3788","School of Exercise and Nutrition Science, Queensland University of Technology, Victoria Park Road, Kelvin Grove, 4059, QLD, Australia; Centre for Sports Engineering Research, Sheffield Hallam University, Broomgrove Road, Sheffield, S10 2NA, United Kingdom; Physical Education and Sports Science, National Institute of Education, Nanyang Technological University, 1 Nanyang Walk, Singapore, Singapore; Movement Neuroscience, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, 4059, QLD, Australia; Faculty of Sports Science and Recreation, Universiti Teknologi MARA, Shah Alam, 40450, Selangor, Malaysia","Hasan H., School of Exercise and Nutrition Science, Queensland University of Technology, Victoria Park Road, Kelvin Grove, 4059, QLD, Australia, Movement Neuroscience, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, 4059, QLD, Australia, Faculty of Sports Science and Recreation, Universiti Teknologi MARA, Shah Alam, 40450, Selangor, Malaysia; Davids K., Centre for Sports Engineering Research, Sheffield Hallam University, Broomgrove Road, Sheffield, S10 2NA, United Kingdom; Chow J.Y., Physical Education and Sports Science, National Institute of Education, Nanyang Technological University, 1 Nanyang Walk, Singapore, Singapore; Kerr G., School of Exercise and Nutrition Science, Queensland University of Technology, Victoria Park Road, Kelvin Grove, 4059, QLD, Australia, Movement Neuroscience, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, 4059, QLD, Australia","This study investigated effects of wearing compression garments and textured insoles on modes of movement organisation emerging during performance of lower limb interceptive actions in association football. Participants were six skilled (age = 15.67 ± 0.74 years) and six less-skilled (age = 15.17 ± 1.1 years) football players. All participants performed 20 instep kicks with maximum velocity in four randomly organised insoles and socks conditions, (a) Smooth Socks with Smooth Insoles (SSSI); (b) Smooth Socks with Textured Insoles (SSTI); (c) Compression Socks with Smooth Insoles (CSSI); and (d), Compression Socks with Textured Insoles (CSTI). Results showed that, when wearing textured and compression materials (CSSI condition), less-skilled participants displayed significantly greater hip extension and flexion towards the ball contact phase, indicating larger ranges of motion in the kicking limb than in other conditions. Less-skilled participants also demonstrated greater variability in knee–ankle intralimb (angle–angle plots) coordination modes in the CSTI condition. Findings suggested that use of textured and compression materials increased attunement to somatosensory information from lower limb movement, to regulate performance of dynamic interceptive actions like kicking, especially in less-skilled individuals. © 2016 European College of Sport Science.","attunement; clinical compression socks; instep kick; somatosensory information; Textured insoles","Adolescent; Athletes; Athletic Performance; Biomechanical Phenomena; Cohort Studies; Feedback, Sensory; Foot; Humans; Male; Random Allocation; Range of Motion, Articular; Soccer; Stockings, Compression; adolescent; athlete; athletic performance; biomechanics; cohort analysis; compression stocking; foot; human; joint characteristics and functions; male; physiology; randomization; sensory feedback; soccer; statistics and numerical data","Anderson D., Sidaway B., Coordination changes associated with practice of a soccer kick, Research Quarterly for Exercise and Sport, 65, 2, pp. 93-99, (1994); Ball K.A., Kinematic comparison of the preferred and non-preferred foot punt kick, Journal of Sports Sciences, 29, 14, pp. 1545-1552, (2011); Chow J.Y., Davids K., Button C., Koh M., Variation in coordination of a discrete multiarticular action as a function of skill level, Journal of Motor Behavior, 39, 6, pp. 463-479, (2007); Chow J.Y., Davids K., Button C., Koh M., Coordination changes in a discrete multi-articular action as a function of practice, Acta Psychologica, 127, 1, pp. 163-176, (2008); Davids K., Lees A., Burwitz L., Understanding and measuring coordination and control in kicking skills in soccer: Implications for talent identification and skill acquisition, Journal of Sports Sciences, 18, 9, pp. 703-714, (2000); Davids K., Shuttleworth R., Button C., Renshaw I., Glazier P., Essential noise”–enhancing variability of informational constraints benefits movement control: A comment on Waddington and Adams (2003), British Journal of Sports Medicine, 38, 5, pp. 601-605, (2004); Egan C.D., Verheul M.H., Savelsbergh G.J., Effects of experience on the coordination of internally and externally timed soccer kicks, Journal of Motor Behavior, 39, 5, pp. 423-432, (2007); Han J., Anson J., Waddington G., Adams R., Sport attainment and proprioception, International Journal of Sports Science and Coaching, 9, 1, pp. 159-170, (2014); Han J., Waddington G., Anson J., Adams R., Level of competitive success achieved by elite athletes and multi-joint proprioceptive ability, Journal of Science and Medicine in Sport, 18, pp. 77-81, (2013); Hartmann A., Murer K., de Bie R.A., de Bruin E.D., The effect of a training program combined with augmented afferent feedback from the feet using shoe insoles on gait performance and muscle power in older adults: A randomised controlled trial, Disability & Rehabilitation, 32, 9, pp. 755-764, (2010); Hasan H., Davids K., Chow J.Y., Kerr G., Compression and texture in socks enhance football kicking performance, Human Movement Science, 48, pp. 102-111, (2016); Hatton A., Dixon J., Rome K., Newton J., Martin D., Altering gait by way of stimulation of the plantar surface of the foot: The immediate effect of wearing textured insoles in older fallers, Journal of Foot and Ankle Research, 5, 1, (2012); Hodges N.J., Hayes S., Horn R.R., Williams A.M., Changes in coordination, control and outcome as a result of extended practice on a novel motor skill, Ergonomics, 48, 11-14, pp. 1672-1685, (2005); Inoue K., Nunome H., Sterzing T., Shinkai H., Ikegami Y., Dynamics of the support leg in soccer instep kicking, Journal of Sports Sciences, 32, 11, pp. 1023-1032, (2014); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Science and Medicine, 6, 2, pp. 154-165, (2007); Lee M.C., Chow J.Y., Komar J., Tan C.W., Button C., Nonlinear pedagogy: An effective approach to cater for individual differences in learning a sports skill, PLoS One, 9, 8, (2014); Lees A., Rahnama N., Variability and typical error in the kinematics and kinetics of the maximal instep kick in soccer, Sports Biomechanics, (2013); Maki B.E., Perry S.D., Norrie R.G., McIlroy W.E., Effect of facilitation of sensation from plantar foot-surface boundaries on postural stabilization in young and older adults, The Journals of Gerontology Series A: Biological Sciences and Medical Sciences, 54, 6, pp. M281-M287, (1999); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, Journal of Sports Sciences, 24, 1, pp. 11-22, (2006); Orth D., Davids K., Wheat J., Seifert L., Liukkonen J., Jaakkola T., Kerr G., The role of textured material in supporting perceptual-motor functions, PLoS ONE, 8, 4, (2013); Perry S.D., Radtke A., McIlroy W.E., Fernie G.R., Maki B.E., Efficacy and effectiveness of a balance-enhancing insole, The Journals of Gerontology Series A: Biological Sciences and Medical Sciences, 63, 6, pp. 595-602, (2008); Qiu F., Cole M.H., Davids K.W., Hennig E.M., Silburn P.A., Netscher H., Kerr G.K., Effects of textured insoles on balance in people with Parkinson’s disease, PloS one, 8, 12, (2013); Sayers M., Morris J., (2012); Sinclair J., Fewtrell D., Taylor P.J., Bottoms L., Atkins S., Hobbs S.J., Three-dimensional kinematic correlates of ball velocity during maximal instep soccer kicking in males, European Journal of Sport Science, 14, 8, pp. 799-805, (2014); Steinberg N., Tirosh O., Adams R., Karin J., Waddington G., Does wearing textured insoles during non-class time improve proprioception in professional dancers?, International Journal of Sports Medicine, (2015); Steinberg N., Waddington G., Adams R., Karin J., Begg R., Tirosh O., Can textured insoles improve ankle proprioception and performance in dancers?, Journal of Sports Sciences, (2015); Steinberg N., Waddington G., Adams R., Karin J., Tirosh O., The effect of textured ballet shoe insoles on ankle proprioception in dancers, Physical Therapy in Sport, (2015); Tsaousidis N., Zatsiorsky V., Two types of ball-effector interaction and their relative contribution to soccer kicking, Human Movement Science, 15, 6, pp. 861-876, (1996); Waddington G., Adams R., Football boot insoles and sensitivity to extent of ankle inversion movement, British Journal of Sports Medicine, 37, 2, pp. 170-175, (2003); Wheat J.S., Haddad J.M., Fedirchuk K., Davids K., Effects of textured socks on balance control during single-leg standing in healthy adults, Procedia Engineering, 72, pp. 120-125, (2014); Woo M.T., Davids K., Liukkonen J., Jaakkola T., Chow J.Y., Effects of textured compression socks on postural control in physically active elderly individuals, Procedia Engineering, 72, pp. 162-167, (2014)","H. Hasan; School of Exercise and Nutrition Science, Queensland University of Technology, Kelvin Grove, Victoria Park Road, 4059, Australia; email: hosni.hasan@hdr.qut.edu.au","","Taylor and Francis Ltd.","17461391","","","27739339","English","Eur. J. Sport Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84991037389" "Linke D.; Lames M.","Linke, Daniel (56416073300); Lames, Martin (11241532700)","56416073300; 11241532700","Impact of sensor/reference position on player tracking variables: Center of scapulae vs center of pelvis","2019","Journal of Biomechanics","83","","","319","323","4","5","10.1016/j.jbiomech.2018.11.046","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85058009537&doi=10.1016%2fj.jbiomech.2018.11.046&partnerID=40&md5=75ba3d6bdc146ee529ee66a7e30e7bf1","Department of Sport and Health Sciences, Chair of Performance Analysis and Sports Informatics, Technical University of Munich, Germany","Linke D., Department of Sport and Health Sciences, Chair of Performance Analysis and Sports Informatics, Technical University of Munich, Germany; Lames M., Department of Sport and Health Sciences, Chair of Performance Analysis and Sports Informatics, Technical University of Munich, Germany"," Electronic performance and tracking systems (EPTS) traditionally rely on one of two body positions as the ultimate representative for the entire body in space: the upper torso between the scapulae (GPS- and radar-based systems) or the body's estimated center (optical and some radar-based systems). The aim of this study was to quantify the impact of the respective reference point upon the resulting kinematic tracking variables. We present a marker-based method comparing center of pelvis (COP) derived tracking variables with center of scapulae (COS) derived tracking variables in a 30 × 30 m (900 m 2 ) VICON measurement area. Fourteen male soccer players completed a running circuit with prescribed team-sport specific movements. Results showed that differences between COP and COS heavily depend on the underlying movement characteristic. Low-speed running showed the lowest deviations whereas accelerated movements and movements with sharp changes in direction lead to a significant increase in the observed differences. Results further showed that COS sprinting distance was on average −44.65% (p < 0.001) lower in comparison to COP. Similarly, maximum speed obtained from COS was −2.94% (p = 0.001) lower in comparison to COP. On the contrary, maximum acceleration values of COS were on average 16.15% (p = 0.02) higher compared to COP. Our work illustrates that the anatomical reference point used to represent the entire body in space needs to be carefully considered in the interpretation of tracking variables delivered by different EPTS. © 2018 Elsevier Ltd","Athlete tracking systems; Body reference; Center of pelvis; Tracking variables; Wearable sensors","Acceleration; Athletic Performance; Biomechanical Phenomena; Humans; Male; Monitoring, Physiologic; Movement; Pelvis; Running; Scapula; Soccer; Young Adult; Space-based radar; Sports; Tracking (position); Body positions; Body reference; Center of pelvis; Electronic performance; Maximum acceleration; Movement characteristics; Reference points; Tracking system; acceleration; agility; Article; controlled study; electronic performance and tracking system; exercise; Friedman test; human; kinematics; male; motion; movement (physiology); pelvis; priority journal; running; scapula; soccer player; athletic performance; biomechanics; devices; physiologic monitoring; physiology; soccer; young adult; Wearable sensors","Beek P.J., Peper C.E., Stegeman D.F., (1995); Buchheit M., Allen A., Poon T.K., Modonutti M., Gregson W., Di Salvo V., Integrating different tracking systems in football: multiple camera semi-automatic system, local position measurement and GPS technologies, J. Sports Sci., 32, 20, pp. 1844-1857, (2014); Buchheit M., Simpson B.M., Player-tracking technology: half-full or half-empty glass?, Int. J. Sports Physiol. Performance, 12, (2017); Carling C., Interpreting physical performance in professional soccer match-play: should we be more pragmatic in our approach?, Sports Med., 43, 8, pp. 655-663, (2013); Cohen J., A power primer, Psychol. Bull., 112, 1, (1992); Hewit J., Cronin J., Button C., Hume P., Understanding deceleration in sport, Strength Conditioning J., 33, 1, pp. 47-52, (2011); Johnston R.J., Watsford M.L., Kelly S.J., Pine M.J., Spurrs R.W., Validity and interunit reliability of 10 Hz and 15 Hz GPS units for assessing athlete movement demands, J. Strength Condition. Res., 28, 6, pp. 1649-1655, (2014); Kavanagh J.J., Barrett R., Morrison S., Upper body accelerations during walking in healthy young and elderly men, Gait Posture, 20, 3, pp. 291-298, (2004); Lamoth C., Beek P.J., Meijer O.G., Pelvis–thorax coordination in the transverse plane during gait, Gait and Posture, 16, 2, pp. 101-114, (2002); Linke D., Link D., Lames M., Validation of electronic performance and tracking systems EPTS under field conditions, PloS one, 13, 7, (2018); Malone J.J., Lovell R., Varley M.C., Coutts A.J., Unpacking the black box: applications and considerations for using GPS devices in sport, Int. J. Sports Physiol. Perform., 12, (2017); Manafifard M., Ebadi H., Moghaddam H.A., A survey on player tracking in soccer videos, Comput. Vision Image Understand., 159, pp. 19-46, (2017); Mero A., Komi P., Gregor R., Biomechanics of sprint running. A review, Sports Med., 13, 6, pp. 376-392, (1992); Randers M.B., Mujika I., Hewitt A., Santisteban J., Bischoff R., Solano R., Zubillaga A., Peltola E., Krustrup P., Mohr M., Application of four different football match analysis systems: a comparative study, J. Sports Sci., 28, 2, pp. 171-182, (2010); Saini M., Kerrigan D.C., Thirunarayan M.A., Duff-Raffaele M., The vertical displacement of the center of mass during walking: a comparison of four measurement methods, J. Biomech. Eng., 120, 1, pp. 133-139, (1998); Schache A.G., Bennell K.L., Blanch P.D., Wrigley T.V., The coordinated movement of the lumbo–pelvic–hip complex during running: a literature review, Gait Posture, 10, 1, pp. 30-47, (1999); Siegle M., Stevens T., Lames M., Design of an accuracy study for position detection in football, J. Sports Sci., 31, 2, pp. 166-172, (2013); Stevens T.G., de Ruiter C.J., van Niel C., van de Rhee R., Beek P.J., Savelsbergh G.J., Measuring acceleration and deceleration in soccer-specific movements using a local position measurement (LPM) system, Int. J. Sports Physiol. Perform., 9, 3, pp. 446-456, (2014)","D. Linke; Department of Sport and Health Sciences, Chair of Training Science and Sports Informatics, Technical University of Munich, Munich, Uptown München - Campus D, Georg-Brauchle Ring 60/62, D-80992, Germany; email: daniel.linke@tum.de","","Elsevier Ltd","00219290","","JBMCB","30551921","English","J. Biomech.","Article","Final","","Scopus","2-s2.0-85058009537" "Peker A.T.; Böge V.; Bailey G.; Wagman J.B.; Stoffregen T.A.","Peker, Alper Tunga (57206255267); Böge, Veysel (57219002814); Bailey, George (57218996985); Wagman, Jeffrey B. (6604071781); Stoffregen, Thomas A. (7004273351)","57206255267; 57219002814; 57218996985; 6604071781; 7004273351","Perception of Affordances in Soccer: Kicking for Power Versus Kicking for Precision","2022","Research Quarterly for Exercise and Sport","93","1","","144","152","8","6","10.1080/02701367.2020.1812494","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85090956506&doi=10.1080%2f02701367.2020.1812494&partnerID=40&md5=a305cff808d1fe22ea2e8c934e34672b","University of Minnesota, United States; Selçuk University, Turkey; Illinois State University, United States","Peker A.T., University of Minnesota, United States; Böge V., Selçuk University, Turkey; Bailey G., University of Minnesota, United States; Wagman J.B., Illinois State University, United States; Stoffregen T.A., University of Minnesota, United States","Purpose: We investigated youth soccer players’ perception of affordances for different types of kicks. Method: In the Power task, players judged the maximum distance they could kick the ball. In the Precision task, players judged how close to a designated target line they could kick the ball. Following judgments, players performed each task. Both judgments and performance were assessed immediately before and immediately after players competed in a regulation soccer match, thereby permitting us to assess possible effects of long-term experience on perceptual sensitivity to short-term changes in ability. We compared players from two league groups: U16 (mean age = 15.45 years, SD = 0.52 years) versus U18 (mean age = 17.55 years, SD = 0.52 years). Results: As expected, for the Power task actual kicking ability was greater for the U18 group (p <.05). In statistically significant interactions, we found that judgments of Power kicking ability differed before versus after match play, but only for the U16 group. We found no statistically significant effects for the Precision task. Conclusions: We identified interactions between long-term and short-term soccer experience which revealed that the effects of long-term experience on affordance perception were not general. Two additional years of playing experience (in the U18 group, relative to the U16 group) did not lead to an overall improvement in the perception of kicking-related affordances. Rather, variation in long-term experience was associated with changes in affordance perception which were situation-specific, being manifested only after playing a soccer match, and not before. © 2020 SHAPE America.","Affordances; kicking; learning; soccer","Adolescent; Athletic Performance; Biomechanical Phenomena; Humans; Perception; Soccer; adolescent; article; decision making; human; juvenile; learning; perception; soccer player; athletic performance; biomechanics; perception; physiology; soccer","Chang C.-H., Wade M.G., Stoffregen T.A., Ho H.-Y., Length perception by dynamic touch: The effects of age and experience, Journal of Gerontology: Psychological Sciences, 63B, 3, pp. P165-P170, (2008); Durgin F.H., Klein B., Spiegel C.J., Williams M., The social psychology of perception experiments: Hills, backpacks, glucose, and the problem of generalizability, Journal of Experimental Psychology: Human Perception & Performance, 38, pp. 1582-1595, (2012); Faul F., Erdfelder E., Lang A.G., Buchner A., G* Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences, Behavior Research Methods, 39, 2, pp. 175-191, (2007); Fink P.W., Foo P.S., Warren W.H., Catching fly balls in virtual reality: A critical test of the outfielder problem, Journal of Vision, 9, 13, (2009); Firestone C., Scholl B.J., Cognition does not affect perception: Evaluating the evidence for “top-down” effects, Behavioral and Brain Sciences, 39, (2016); Firestone F., How “Paternalistic” is spatial perception? Why wearing a heavy backpack doesn’t—and couldn’t—make hills look steeper, Perspectives on Psychological Science, 8, 4, pp. 455-473, (2013); Franchak J.M., Adolph K.E., Gut estimates: Pregnant women adapt to changing possibilities for squeezing through doorways, Attention, Perception, & Psychophysics, 76, 2, pp. 460-472, (2014); Gibson J.J., The ecological approach to visual perception, (2014); Grechkin T.Y., Chihak B.J., Cremer J.F., Kearney J.K., Plumert J.M., Perceiving and acting on complex affordances: How children and adults bicycle across two lanes of opposing traffic, Journal of Experimental Psychology: Human Perception and Performance, 39, 1, pp. 23-36, (2013); Heras-Escribano M., The philosophy of affordances, (2019); Higuchi T., Murai G., Kijima A., Seya Y., Wagman J.B., Imanaka K., Athletic experience influences shoulder rotations when running through apertures, Human Movement Science, 30, 3, pp. 534-549, (2011); Hove P., Riley M.A., Shockley K., Perceiving affordances of hockey sticks by dynamic touch, Ecological Psychology, 18, 3, pp. 163-189, (2006); Ishak S., Franchak J.M., Adolph K.E., Perception–action development from infants to adults: Perceiving affordances for reaching through openings, Journal of Experimental Child Psychology, 117, pp. 92-105, (2014); Karasik L.B., Tamis-LeMonda C.S., Adolph K.E., Transition from crawling to walking and infants’ actions with objects and people, Child Development, 82, 4, pp. 1199-1209, (2011); Lee Y., Lee S., Carello C., Turvey M.T., An archer’s perceived form scales the “hitableness” of archery targets, Journal of Experimental Psychology: Human Perception and Performance, 38, 5, (2012); Malek E.A., Wagman J.B., Kinetic potential influences visual and remote haptic perception of affordances for standing on inclined surfaces, The Quarterly Journal of Experimental Psychology, 61, 12, pp. 1813-1826, (2008); Mark L.S., Eyeheight-scaled information about affordances: A study of sitting and stair climbing, Journal of Experimental Psychology: Human Perception & Performance, 13, pp. 361-370, (1987); Paterson G., van der Kamp J., Bressan E., Savelsbergh G., Action-specific effects on perception are grounded in affordance perception: An examination of soccer players’ action choices in a free-kick task, International Journal of Sport Psychology, 47, pp. 318-334, (2016); Peker A.T., Erkmen N., Kocaoglu Y., Bayraktar Y., Arguz A., Wagman J.B., Stoffregen T.A., Perception of affordances for vertical and horizontal jumping in children: Gymnasts versus non-athletes, (2020); Pijpers J.R., Oudejans R.R.D., Bakker F.C., Changes in the perception of action possibilities while climbing to fatigue on a climbing wall, Journal of Sports Sciences, 25, 1, pp. 97-110, (2007); Seifert L., Orth D., Mantel B., Boulanger J., Herault R., Dicks M., Affordance realization in climbing: Learning and transfer, Frontiers in Psychology, 9, (2018); Stoffregen T.A., Affordances as properties of the animal-environment system, Ecological Psychology, 15, 2, pp. 115-134, (2003); Tucker S.I., Moyer-Packenham P.S., Westenskow A., Jordan K.E., The complexity of the affordance-ability relationship when second-grade children interact with mathematics virtual manipulative apps, Technology, Knowledge, & Learning, 21, 3, pp. 341-360, (2016); Walter H., Wagman J.B., Stergiou N., Erkmen N., Stoffregen T.A., Dynamic perception of dynamic affordances: Walking on a ship at sea, Experimental Brain Research, 235, 2, pp. 517-524, (2017); Warren W.H., Perceiving affordances: Visual guidance of stair climbing, Journal of Experimental Psychology: Human Perception & Performance, 10, pp. 683-703, (1984); Weast J., Shockley K., Riley M., The influence of athletic experience and kinematic information on skill-relevant affordance perception, Quarterly Journal of Experimental Psychology, 64, 4, pp. 689-706, (2011); Witt J., Action’s influence on spatial perception: Resolution and a mystery, Current Opinion in Psychology, 32, pp. 153-157, (2020); Witt J.K., Dorsch T.E., Kicking to bigger uprights: Field goal kicking performance influences perceived size, Perception, 38, 9, pp. 1328-1340, (2009)","T.A. Stoffregen; University of Minnesota, United States; email: tas@umn.edu","","Routledge","02701367","","RQESD","32924810","English","Res. Q. Exerc. Sport","Article","Final","","Scopus","2-s2.0-85090956506" "Niinimäki S.; Härkönen L.; Nikander R.; Abe S.; Knüsel C.; Sievänen H.","Niinimäki, Sirpa (37662123400); Härkönen, Laura (25721995200); Nikander, Riku (8299715300); Abe, Shinya (56849819400); Knüsel, Christopher (6602347979); Sievänen, Harri (7005525254)","37662123400; 25721995200; 8299715300; 56849819400; 6602347979; 7005525254","The cross-sectional area of the gluteus maximus muscle varies according to habitual exercise loading: Implications for activity-related and evolutionary studies","2016","HOMO- Journal of Comparative Human Biology","67","2","","125","137","12","7","10.1016/j.jchb.2015.06.005","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84941798020&doi=10.1016%2fj.jchb.2015.06.005&partnerID=40&md5=3ef3ab5ef873d154ebd5530e49805411","Department of Archaeology, University of Oulu, PO Box 1000, Oulu, 90014, Finland; Department of Ecology, University of Oulu, PO Box 3000, Oulu, 90014, Finland; Department of Biology, University of Eastern Finland, PO Box 111, Joensuu, 80101, Finland; Department of Health Sciences, University of Jyväskylä, PO BOX 35, Jyväskylä, 40014, Finland; GeroCenter Foundation for Aging Research and Development, Rautpohjankatu 8, Jyväskylä, 40700, Finland; Jyväskylä Central Hospital, Keskussairaalantie 19, Jyväskylä, 40620, Finland; Department of Mechanical Engineering and Industrial Systems, Tampere University of Technology, PO Box 589, Tampere, 33101, Finland; De la Préhistoire à l'Actuel-Culture, Environnement, et Anthropologie (PACEA), UMR5199 PACEA, Batiment B8, Allée Geoffroy Saint Hilaire, CS 50023, Pessac Cedex, 33615, France; The UKK Institute for Health Promotion Research, Kaupinpuistonkatu 1, PO Box 30, Tampere, 33501, Finland","Niinimäki S., Department of Archaeology, University of Oulu, PO Box 1000, Oulu, 90014, Finland, Department of Ecology, University of Oulu, PO Box 3000, Oulu, 90014, Finland; Härkönen L., Department of Ecology, University of Oulu, PO Box 3000, Oulu, 90014, Finland, Department of Biology, University of Eastern Finland, PO Box 111, Joensuu, 80101, Finland; Nikander R., Department of Health Sciences, University of Jyväskylä, PO BOX 35, Jyväskylä, 40014, Finland, GeroCenter Foundation for Aging Research and Development, Rautpohjankatu 8, Jyväskylä, 40700, Finland, Jyväskylä Central Hospital, Keskussairaalantie 19, Jyväskylä, 40620, Finland; Abe S., Department of Mechanical Engineering and Industrial Systems, Tampere University of Technology, PO Box 589, Tampere, 33101, Finland; Knüsel C., De la Préhistoire à l'Actuel-Culture, Environnement, et Anthropologie (PACEA), UMR5199 PACEA, Batiment B8, Allée Geoffroy Saint Hilaire, CS 50023, Pessac Cedex, 33615, France; Sievänen H., The UKK Institute for Health Promotion Research, Kaupinpuistonkatu 1, PO Box 30, Tampere, 33501, Finland","Greater size of the gluteus maximus muscle in humans compared to non-human primates has been considered an indication of its function in bipedal posture and gait, especially running capabilities. Our aim was to find out how the size of the gluteus maximus muscle varies according to sports while controlling for variation in muscle strength and body weight. Data on gluteus maximus muscle cross-sectional area (MCA) were acquired from magnetic resonance images of the hip region of female athletes (N = 91), and physically active controls (N = 20). Dynamic muscle force was measured as counter movement jump and isometric knee extension force as leg press. Five exercise loading groups were created: high impact (triple-jumpers and high-jumpers), odd impact (soccer and squash players), high magnitude (power-lifters), repetitive impact (endurance runners) and repetitive non-impact (swimmers) loadings. Individuals in high impact, odd impact or high-magnitude loading groups had greater MCA compared to those of controls, requiring powerful hip extension, trunk stabilization in rapid directional change and high explosive muscle force. Larger body size and greater muscle strength were associated with larger MCA. An increase in dynamic force was associated with larger MCA, but the strength of this relationship varied with body weight. Thus, gluteal adaptation in humans promotes powerful lower limb movements required in sprinting and rapid changes in direction, as well as maintenance and stabilization of an erect trunk which also provides a platform for powerful motions of the upper limbs. These movements have likely evolved to facilitate food acquisition, including hunting. © 2015 Elsevier GmbH.","Bipedalism; Endurance running; Hominin; Human evolution; Hunting; Medical imaging; Sprinting","Adolescent; Adult; Biological Evolution; Biomechanical Phenomena; Body Weight; Exercise; Female; Gait; Hip; Humans; Magnetic Resonance Imaging; Muscle Strength; Muscle, Skeletal; Organ Size; Sports; Weight-Bearing; Young Adult; adolescent; adult; anatomy and histology; biomechanics; body weight; diagnostic imaging; evolution; exercise; female; gait; hip; human; muscle strength; nuclear magnetic resonance imaging; organ size; physiology; skeletal muscle; sport; weight bearing; young adult","Ahtiainen J.P., Pakarinen A., Alen M., Kraemer W.J., Hakkinen K., Muscle hypertrophy, hormonal adaptations and strength development during strength training in strength-trained and untrained men, Eur. J. Appl. Physiol., 89, pp. 555-563, (2003); Aiello L., Dean C., An Introduction to Human Evolutionary Anatomy, (1990); Alves Cardoso F., Henderson C., The categorisation of occupation in identified skeletal collections: a source of bias?, Int. J. Osteoarchaeol., 23, pp. 186-196, (2013); Andreoli A., Monteleone M., Van Loan M., Promenzio L., Tarantino U., de Lorenzo A., Effects of different sports on bone density and muscle mass in highly trained athletes, Med. Sci. Sports Exerc., 33, pp. 507-511, (2001); Arnqvist G., Martensson T., Measurement error in geometric morphometrics: empirical strategies to assess and reduce its impact on measure of shape, Acta Zool. Acad. Sci. Hung., 44, pp. 73-96, (1998); Bartlett J.L., Sumner B., Ellis R.G., Kram R., Activity and function of the human Gluteal muscles in walking, running, sprinting, and climbing, Am. J. Phys. Anthropol., 153, pp. 124-131, (2014); Bencke J., Damsgaard R., Saekmose A., Jorgensen P., Jorgensen K., Klausen K., Anaerobic power and muscle strength characteristics of 11 years old elite and non-elite boys and girls for gymnastics, team handball, tennis and swimming, Scand. J. Med. Sci. Sports, 12, pp. 171-178, (2002); Bramble D.M., Lieberman D.E., Endurance running and the evolution of Homo, Nature, 18, pp. 345-352, (2004); Brown C., Wilmore J.H., The effects of maximal resistance training on the strength and body composition of women athletes, Med. Sci. Sports Exerc., 6, pp. 174-177, (1974); Buford T.W., Rossi S.J., Smith D.B., Warren A.J., A comparison of periodization models during nine weeks with equated volume and intensity for strength, J. Strength Cond. Res., 21, pp. 1245-1250, (2007); Campos G.E., Lueche T.J., Wendeln H.K., Toma K., Hagerman F.C., Murray T.F., Raqq K.E., Ratamess N.A., Kraemer W.J., Staron R.S., Muscular adaptations in response to three different resistance-training regimes: specificity of repetition maximum training zones, Eur. J. Appl. Physiol., 88, pp. 50-60, (2002); Chilibeck P.D., Calder A.W., Sale D.G., Webber C.E., A comparison of strength and muscle mass increases during resistance training in young women, Eur. J. Appl. Physiol., 77, pp. 170-175, (1998); Dawson J.F., Moderation in management research: what, why, when and how, J. Bus. Psychol., 29, pp. 1-19, (2013); Eshed V., Gopher A., Galili E., Musculoskeletal stress markers in Natufian hunter-gatherers and Neolithic farmers in the Levant: the upper limb, Am. J. Phys. Anthropol., 123, pp. 303-315, (2004); Forbes G.B., Lean body mass-body fat interrelationships in humans, Nutr. 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Physiol., 5, pp. 145-154, (1985); Wilczak C., Consideration of sexual dimorphism, age, and asymmetry in quantitative measurements of muscle insertion sites, Int. J. Osteoarchaeol., 8, pp. 311-325, (1998); Zumwalt A., The effect of endurance exercise on the morphology of muscle attachment sites, J. Exp. Biol., 209, pp. 444-454, (2006)","S. Niinimäki; University of Oulu, Department of Archaeology, Oulu, PO Box 1000, 90014, Finland; email: sirpa.niinimaki@oulu.fi","","Elsevier GmbH","0018442X","","","26384568","English","HOMO","Article","Final","","Scopus","2-s2.0-84941798020" "da Silva Azevedo A.P.; Michelone Acquesta F.; Lancha A.H., Jr.; Bertuzzi R.; Poortmans J.R.; Amadio A.C.; Cerca Serrão J.","da Silva Azevedo, Ana Paula (58610463300); Michelone Acquesta, Fernanda (57205555439); Lancha, Antonio Herbert (7003709994); Bertuzzi, Romulo (26646258900); Poortmans, Jacques R. (7006766204); Amadio, Alberto Carlos (6506701350); Cerca Serrão, Julio (7006430142)","58610463300; 57205555439; 7003709994; 26646258900; 7006766204; 6506701350; 7006430142","Creatine supplementation can improve impact control in high-intensity interval training","2019","Nutrition","61","","","99","104","5","6","10.1016/j.nut.2018.09.020","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85060511318&doi=10.1016%2fj.nut.2018.09.020&partnerID=40&md5=bd2be8ebffd7fc1927bde96c8561cd5f","Laboratory of Biomechanics, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil; Laboratory of Applied Nutrition and Metabolism, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil; Endurance Sports Research Group, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil; Faculté des Sciences de la Motricité, Université Libre de Bruxelles, Brussels, Belgium","da Silva Azevedo A.P., Laboratory of Biomechanics, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil; Michelone Acquesta F., Laboratory of Biomechanics, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil; Lancha A.H., Jr., Laboratory of Applied Nutrition and Metabolism, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil; Bertuzzi R., Endurance Sports Research Group, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil; Poortmans J.R., Faculté des Sciences de la Motricité, Université Libre de Bruxelles, Brussels, Belgium; Amadio A.C., Laboratory of Biomechanics, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil; Cerca Serrão J., Laboratory of Biomechanics, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil","Objectives: This study aimed to investigate the effects of creatine (Cr) supplementation on biomechanical parameters related to shock attenuation during a session of high-intensity interval training (HIIT). Methods: A single-blinded, placebo-controlled, crossover design was adopted to test eight male elite soccer players during HIIT sessions under two conditions: after placebo supplementation and after Cr supplementation. HIIT test sessions consisted of an intermittent test (five bouts of running) with a constant load applied until exhaustion was reached. The vertical component of ground reaction force and electromyography data were recorded by Gaitway and Lynx-EMG Systems, respectively. Heart rate, rated perceived exertion (Borg's Scale) and lactate concentration information were also obtained. Results: Cr supplementation did not affect heart rate, rated perceived exertion, and lactate concentration. Decreased values of magnitude of the first peak of the vertical component of ground reaction force (17.2–24.2%) and impulse of the first 50 ms (Imp50; 34.3%) were observed for Cr, but higher values of time to reach the first peak were detected for Cr compared with placebo. Significant modifications in muscle activation were also observed, mainly in the pre-activation phase, and changes were observed in intermediary bouts. Conclusions: Cr supplementation has the potential to influence biomechanical parameters related to impact control during a single session of HIIT based on running. In particular, the findings of the current study indicate possible improvements in shock attenuation and a safer practice of HIIT under Cr supplementation. © 2018 Elsevier Inc.","Exhaustion; Injury risk; Muscle activity; Running; Shock attenuation; Sports nutrition","Adolescent; Biomechanical Phenomena; Creatine; Cross-Over Studies; Dietary Supplements; Heart Rate; High-Intensity Interval Training; Humans; Lactic Acid; Male; Physical Exertion; Single-Blind Method; Soccer; Young Adult; creatine; lactic acid; creatine; lactic acid; adolescent; Article; biomechanics; Borg Scale; controlled study; crossover procedure; diet supplementation; electromyography; exhaustion; ground reaction force; heart rate; high intensity interval training; human; lactate blood level; male; muscle contraction; priority journal; running; scoring system; shock; single blind procedure; soccer player; dietary supplement; drug effect; exercise; metabolism; physiology; randomized controlled trial; soccer; young adult","Burgomaster K.A., Heigenhauser G.J.F., Gibala M.J., Effect of short-term sprint interval training on human skeletal muscle carbohydrate metabolism during exercise and time-trial performance, J Appl Physiol, 100, pp. 2041-2047, (2006); 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Roy S.H., De Luca C.J., Schneider J., Effects of electrode location on myoelectric conduction velocity and median frequency estimates, J Appl Physiol, 61, pp. 1510-1517, (1986); Mujika I., Padilla S., Ibanez J., Izquierdo M., Gorostiaga E., Creatine supplementation and sprint performance in soccer players, Med Sci Sport Exerc, 32, pp. 518-525, (2000); Paavolainen L., Hakkinen K., Hamalainen I., Nummela A., Rusko H., Explosive-strength training improves 5-km running time by improving running economy and muscle power, J Appl Physiol (1985), 86, pp. 1527-1533, (1999)","A.P. da Silva Azevedo; Laboratory of Biomechanics, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil; email: anaazevedo@usp.br","","Elsevier Inc.","08999007","","NUTRE","30708260","English","Nutrition","Article","Final","","Scopus","2-s2.0-85060511318" "Tojima M.; Torii S.","Tojima, Michio (55324782700); Torii, Suguru (8914173800)","55324782700; 8914173800","Difference in kick motion of adolescent soccer players in presence and absence of low back pain","2018","Gait and Posture","59","","","89","92","3","5","10.1016/j.gaitpost.2017.10.012","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85030855005&doi=10.1016%2fj.gaitpost.2017.10.012&partnerID=40&md5=63c2304504058546504133c7ee012200","Tokyo International University, Saitama, Japan; Faculty of Sport Sciences, Waseda University, Saitama, Japan","Tojima M., Tokyo International University, Saitama, Japan, Faculty of Sport Sciences, Waseda University, Saitama, Japan; Torii S., Faculty of Sport Sciences, Waseda University, Saitama, Japan","Many adolescent soccer players experience low back pain (LBP). However, there are no reports studying the kick motion of adolescent soccer players experiencing LBP. This study aimed to clarify the kick motion of adolescent soccer players in the presence and absence of LBP. We recruited 42 adolescent soccer players and divided them into two groups according to the presence of LBP (LBP group, n = 22) and absence of LBP (NBP group, n = 20). We measured real-time kick motion using a three-dimensional motion analysis system. We placed 65 spherical markers on each anatomical landmark and calculated the angle of the lumbar spine, center of mass (COM) of the whole body, and displacement of the support foot. We used an unpaired t-test to compare the data between the groups. Compared with the NBP group, the LBP group showed a lateral shift in COM, which increased the duration of kick motion. The presence of LBP affected the posterior positioning of the support foot and restricted the player's lumbar spine from bending laterally. A lateral shift in COM and larger rotation of the lumbar spine could stress the lumbar spine during kick motion. Therefore, coaches and athletic trainers should pay attention to soccer players’ lumbar spine rotation and the COM shift during kick motion. This would be important for preventing LBP in adolescent soccer players. © 2017 Elsevier B.V.","Adolescent; Kick motion; Low back pain; Lumbar spine; Soccer","Adolescent; Biomechanical Phenomena; Cross-Sectional Studies; Humans; Imaging, Three-Dimensional; Low Back Pain; Lumbar Vertebrae; Range of Motion, Articular; Rotation; Soccer; adolescent; anatomic landmark; Article; athletic trainer; biomechanics; body mass; clinical article; controlled study; foot; human; kicking; leg movement; low back pain; lumbar spine; male; motion analysis system; physical activity; priority journal; rotation; soccer; soccer player; spinous process; cross-sectional study; joint characteristics and functions; low back pain; lumbar vertebra; pathophysiology; physiology; procedures; three dimensional imaging","Van der Sluis A., Elferink-Gemser M.T., Brink M.S., Visscher C., Importance of peak height velocity timing in terms of injuries in talented soccer players, Int. J. 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Ther., 37, 5, pp. 260-268, (2007); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med. Sci. Sports Exerc., 34, 12, pp. 2028-2036, (2002); Philippaerts R.M., Vaeyens R., Janssens M., Van Renterghem B., Matthys D., Craen R., Bourgois J., Vrijens J., Beunen G., Malina R.M., The relationship between peak height velocity and physical performance in youth soccer players, J. Sports Sci., 24, 3, pp. 221-230, (2006)","M. Tojima; Tokyo International University, Saitama, Japan; email: mtojima@tiu.ac.jp","","Elsevier B.V.","09666362","","GAPOF","29028625","English","Gait Posture","Article","Final","","Scopus","2-s2.0-85030855005" "Thomas C.; Jones P.A.; Dos’santos T.","Thomas, Christopher (56754565800); Jones, Paul A. (55308526600); Dos’santos, Thomas (57170712800)","56754565800; 55308526600; 57170712800","Countermovement Jump Force–Time Curve Analysis between Strength-Matched Male and Female Soccer Players","2022","International Journal of Environmental Research and Public Health","19","6","3352","","","","5","10.3390/ijerph19063352","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85126310026&doi=10.3390%2fijerph19063352&partnerID=40&md5=626cf9efe808d4858408f400c01a601d","Directorate of Psychology and Sport, University of Salford, Salford, M6 6PU, United Kingdom; Department of Sport and Exercise Sciences, Musculoskeletal Science and Sports Medicine Research Centre, Manchester Metropolitan University, Manchester, M15 6BH, United Kingdom","Thomas C., Directorate of Psychology and Sport, University of Salford, Salford, M6 6PU, United Kingdom; Jones P.A., Directorate of Psychology and Sport, University of Salford, Salford, M6 6PU, United Kingdom; Dos’santos T., Department of Sport and Exercise Sciences, Musculoskeletal Science and Sports Medicine Research Centre, Manchester Metropolitan University, Manchester, M15 6BH, United Kingdom","The purpose of this study was to compare countermovement jump force–time measures between strength-matched male and female soccer players. Males (n = 11) and females (n = 11) were strength-matched via isometric mid-thigh pull testing, whereby peak force values were normalised to body mass. Subjects performed three maximal-effort countermovement jumps (CMJs) on a force platform from which a range of kinetic and kinematic variables were calculated via forward dynamics. Thereafter, differences in gross measures were examined via independent t-tests, while differences in force–, power–, velocity–, and displacement–time curves throughout the entire CMJ were analysed using statistical parametric mapping (SPM). Jump height, reactive strength index modified, propulsion mean force, propulsion impulse, and propulsion mean velocity were all greater for males (d = 1.50 to 3.07). Relative force– and velocity–time curves were greater for males at 86–93% (latter half of the concentric phase) and 85–100% (latter half of the concentric phase) of normalized movement time, respectively. Time to take-off, braking phase time, braking mean velocity and impulse, propulsion phase time and centre of mass displacement were similar between males and females (d = −0.23 to 0.97). This research demonstrates the strength of SPM to identify changes between entire force-time curves. Continued development and the use of SPM analysis could present the opportunity for a refined comparison of strength-matched male and female CMJ performance with the analysis of entire force–time curves. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.","Gender differences; Isometric mid-thigh pull; Statistical parametric mapping; Waveform analysis","Biomechanical Phenomena; Female; Humans; Male; Movement; Muscle Strength; Soccer; Thigh; gender disparity; parameterization; public health; sport; statistical analysis; waveform analysis; adult; Article; body mass; body weight; clinical article; comparative study; controlled study; countermovement jump force; cross-sectional study; female; human; isometrics; jumping; kinematics; kinetics; male; movement time; muscle contraction; muscle strength; soccer player; velocity; waveform; biomechanics; movement (physiology); soccer; thigh","Hughes S., Warmenhoven J., Haff G.G., Chapman D.W., Nimphius S., Countermovement Jump and Squat Jump Force-Time Curve Analysis in Control and Fatigue Conditions, J. Strength Cond. Res, (2021); McMahon J.J., Jones P.A., Comfort P., Comparison of Countermovement Jump–Derived Reactive Strength Index Modified and Underpinning Force-Time Variables between Super League and Championship Rugby League Players, J. Strength Cond. Res, 36, pp. 226-231, (2019); Rice P.E., Goodman C.L., Capps C.R., Triplett N.T., Erickson T.M., McBride J.M., Force–and Power–Time Curve Comparison during Jumping between Strength-Matched Male and Female Basketball Players, Eur. J. Sport Sci, 17, pp. 286-293, (2017); Philpott L.K., Forrester S.E., van Lopik K.A., Hayward S., Conway P.P., West A.A., Countermovement Jump Performance in Elite Male and Female Sprinters and High Jumpers, Proc. Inst. Mech. Eng. Part P J. Sports Eng. Technol, 235, pp. 131-138, (2021); Moir G.L., Garcia A., Dwyer G.B., Intersession Reliability of Kinematic and Kinetic Variables during Vertical Jumps in Men and Women, Int. J. Sports Physiol. Perform, 4, (2009); Gathercole R., Sporer B., Stellingwerff T., Sleivert G., Alternative Countermovement-Jump Analysis to Quantify Acute Neuromuscular Fatigue, Int. J. Sports Physiol. Perform, 10, pp. 84-92, (2015); Cormie P., McGuigan M.R., Newton R.U., Changes in the Eccentric Phase Contribute to Improved Stretch-Shorten Cycle Performance after Training, Med. Sci. Sports Exerc, 42, pp. 1731-1744, (2010); Ebben W., Flanagan E., Jensen R., Gender Similarities in Rate of Force Development and Time to Takeoff During the Countermovement Jump, J. Exerc. Physiol. Online, 10, pp. 10-16, (2007); McMahon J., Rej S., Comfort P., Sex Differences in Countermovement Jump Phase Characteristics, Sports, 5, (2017); Laffaye G., Wagner P.P., Tombleson T.I., Countermovement Jump Height: Gender and Sport-Specific Differences in the Force-Time Variables, J. Strength Cond. Res, 28, pp. 1096-1105, (2014); Nimphius S., Exercise and Sport Science Failing by Design in Understanding Female Athletes, Int. J. Sports Physiol. Perform, 14, pp. 1157-1158, (2019); Nimphius S., McBride J.M., Rice P.E., Goodman-Capps C.L., Capps C.R., Comparison of Quadriceps and Hamstring Muscle Activity during an Isometric Squat between Strength-Matched Men and Women, J. Sports Sci. Med, 18, (2019); Riggs M.P., Sheppard J.M., The Relative Importance of Strength and Power Qualities to Vertical Jump Height of Elite Beach Volleyball Players during the Counter-Movement and Squat Jump, J. Hum. Sport Exerc, 4, pp. 221-236, (2009); Staron R.S., Karapondo D.L., Kraemer W.J., Fry A.C., Gordon S.E., Falkel J.E., Hagerman F.C., Hikida R.S., Skeletal Muscle Adaptations during Early Phase of Heavy-Resistance Training in Men and Women, J. Appl. Physiol, 76, pp. 1247-1255, (1994); Cormie P., McBride J.M., McCaulley G.O., Power-Time, Force-Time, and Velocity-Time Curve Analysis of the Countermovement Jump: Impact of Training, J. Strength Cond. 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Physiol, 99, pp. 235-243, (2007); Perez-Castilla A., Rojas F.J., Gomez-Martinez F., Garcia-Ramos A., Vertical Jump Performance Is Affected by the Velocity and Depth of the Countermovement, Sports Biomech, 20, pp. 1015-1030, (2019); Bobbert M.F., Gerritsen K.G., Litjens M.C., Van Soest A.J., Why Is Countermovement Jump Height Greater than Squat Jump Height?, Med. Sci. Sports Exerc, 28, pp. 1402-1412, (1996); Bailey C.A., Suchomel T.J., Beckham G.K., Sole C.J., Grazer J.L., Reactive Strength Index-Modified Differences between Baseball Position Players and Pitchers, Proceedings of the XXXII International Conference of Biomechanics in Sports, pp. 562-565, (2014); Brady C.J., Harrison A.J., Flanagan E.P., Haff G.G., Comyns T.M., A Comparison of the Isometric Midthigh Pull and Isometric Squat: Intraday Reliability, Usefulness, and the Magnitude of Difference between Tests, Int. J. Sports Physiol. Perform, 13, pp. 844-852, (2018)","C. Thomas; Directorate of Psychology and Sport, University of Salford, Salford, M6 6PU, United Kingdom; email: c.thomas2@edu.salford.ac.uk","","MDPI","16617827","","","35329039","English","Int. J. Environ. Res. Public Health","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85126310026" "Alcantarilla-Pedrosa M.; Álvarez-Santana D.; Hernández-Sánchez S.; Yañez-Álvarez A.; Albornoz-Cabello M.","Alcantarilla-Pedrosa, Manuel (57221861852); Álvarez-Santana, David (57221873438); Hernández-Sánchez, Sergio (35096143300); Yañez-Álvarez, Angel (57218719129); Albornoz-Cabello, Manuel (18435941200)","57221861852; 57221873438; 35096143300; 57218719129; 18435941200","Assessment of external load during matches in two consecutive seasons using the mediacoach® video analysis system in a Spanish professional soccer team: Implications for injury prevention","2021","International Journal of Environmental Research and Public Health","18","3","1128","1","10","9","6","10.3390/ijerph18031128","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100504531&doi=10.3390%2fijerph18031128&partnerID=40&md5=95d79d3b83bf887b67e83d384fe329fe","Medical Department of Real Betis Balompié S.A.D, Avda. Heliópolis, s/n, Sevilla, 41012, Spain; Translational Research Center of Physiotherapy, Department of Pathology and Surgery, Miguel Hernandez University, Sant Joan, Alicante, 03550, Spain; Department of Physiotherapy, Faculty of Nursing, Physiotherapy, and Podiatry, University of Seville, Seville, 41009, Spain","Alcantarilla-Pedrosa M., Medical Department of Real Betis Balompié S.A.D, Avda. Heliópolis, s/n, Sevilla, 41012, Spain; Álvarez-Santana D., Medical Department of Real Betis Balompié S.A.D, Avda. Heliópolis, s/n, Sevilla, 41012, Spain; Hernández-Sánchez S., Translational Research Center of Physiotherapy, Department of Pathology and Surgery, Miguel Hernandez University, Sant Joan, Alicante, 03550, Spain; Yañez-Álvarez A., Department of Physiotherapy, Faculty of Nursing, Physiotherapy, and Podiatry, University of Seville, Seville, 41009, Spain; Albornoz-Cabello M., Department of Physiotherapy, Faculty of Nursing, Physiotherapy, and Podiatry, University of Seville, Seville, 41009, Spain","(1) Background: Knowledge of competition loads is a relevant aspect of injury prevention. We aimed to describe the training and match injury incidence and physical demand variables observed during a competition using a multi-camera video analysis system (Mediacoach®) (LaLigaTM, Madrid, Spain) in a professional Spanish soccer team during two consecutive seasons. (2) Methods: 30 players (age: 26.07 ± 3.78 years) participated in the study. Physical variables of 74 matches were collected retrospectively. Injury characteristics of both seasons were also collected. Differences in these variables between the two seasons and by player position and correlations between variables were explored. (3) Results: There were statistically significant differences between the two seasons in the total distance traveled and the distance traveled at a high-intensity sprint (p < 0.05). During the two seasons, there was an average of 4.7 ± 2.2 injuries. The total distance traveled was different according to the playing position, and statistically significant correlations were found in the total distance and sprint at a high intensity for certain positions with different injury severity (4) Conclusions: The match performance data recorded by the Mediacoach® system may provide relevant information by player position to technical and medical staff for injury prevention. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.","Injury; Match-performance; Prevention; Soccer; Video-analysis","Adult; Athletic Performance; Humans; Retrospective Studies; Running; Seasons; Soccer; Spain; Young Adult; Spain; assessment method; correlation; injury; performance assessment; sport; adult; Article; behavioral test parameters; biomechanics; clinical article; competition; controlled study; distance traveled at a high intensity sprint; human; imaging and display; injury severity; male; medical staff; professional athlete; retrospective study; soccer; soccer player; Spaniard; sport injury; sporting event; total distance traveled; training; athletic performance; running; season; Spain; young adult","Dvorak J., Junge A., Derman W., Schwellnus M., Injuries and illnesses of football players during the 2010 FIFA World Cup, Br. J. Sports Med, 45, pp. 626-630, (2011); Orhant E., Carling C., Cox A., A three-year prospective study of illness in professional soccer players, Res. Sports Med, 18, pp. 199-204, (2010); Hagglund M., Walden M., Magnusson H., Kristenson K., Bengtsson H., Ekstrand J., Injuries affect team performance negatively in professional football: An 11-year follow-up of the UEFA Champions League injury study, Br. J. Sports Med, 47, pp. 738-742, (2013); Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: The UEFA injury study, Br. J. Sports Med, 45, pp. 553-558, (2011); Ekstrand J., Keeping your top players on the pitch: The key to football medicine at a professional level, Br. J. Sports Med, 47, pp. 723-724, (2013); Lopez-Valenciano A., Ruiz-Perez I., Garcia-Gomez A., Vera-Garcia F.J., De Ste Croix M., Myer G., Ayala F., Epidemiology of injuries in professional football: A systematic review and meta-analysis, Br. J. Sports Med, 54, pp. 711-718, (2019); Ekstrand J., Dvorak J., D'Hooghe M., Sports medicine research needs funding: The International football federations are leading the way, Br. J. Sports Med, 47, pp. 726-728, (2013); Dupont G., Nedelec M., McCall A., McCormack D., Berthoin S., Wisloff U., Effect of 2 soccer matches in a week on physical performance and injury rate, Am. J. Sports Med, 38, pp. 1752-1758, (2010); Bush M., Barnes C., Archer D., Hogg R., Bradley P., Evolution of match performance parameters for various playing positions in the English Premier League, Hum. Mov. Sci, 39, pp. 1-11, (2015); Meeusen R., Duclos M., Foster C., Fry A., Gleeson M., Nieman D., Raglin J., Rietjens G., Steninacker J., Urhausen A., Prevention, diagnosis, and treatment of the overtraining syndrome: Joint consensus statement of the European College of Sport Science and the American College of Sports Medicine, Med. Sci. Sports Exerc, 45, pp. 186-205, (2013); Malone J.J., Lovell R., Varley M.C., Coutts A.J., Unpacking the black box: Applications and considerations for using GPS devices in sport, Int. J. Sport Physiol, 12, pp. 18-26, (2017); Ehrmann F.E., Duncan C.S., Sindhusake D., Franzsen W.N., Greene D.A., GPS and injury prevention in professional soccer, J. Strength Cond. Res, 30, pp. 360-367, (2016); Carling C., Gall F., Reilly T., Effects of physical efforts on injury in elite soccer, Int. J. Sports Med, 31, pp. 180-185, (2009); Felipe J.L., Garcia-Unanue J., Viejo-Romero D., Navandar A., Sanchez-Sanchez J., Validation of a video-based performance analysis system (Mediacoach®) to analyze the physical demands during matches in La Liga, Sensors, 19, (2019); Pons E., Garcia-Calvo T., Resta R., Blanco H., del Campo R.L., Diaz Gacria J., Pulido J.J., A comparison of a GPS device and a multi-camera video technology during official soccer matches: Agreement between systems, PLoS ONE, 14, (2019); Di Salvo V., Adam C., Barry M., Cardinale M., Validation of Prozone®: A new video-based performance analysis system, Int. J. Perform. Anal. 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Sport, 15, pp. 135-146, (2015); Mallo J., Mena E., Nevado F., Paredes V., Physical demands of top-class soccer friendly matches in relation to a playing position using global positioning system technology, J. Hum. Kinet, 47, pp. 179-188, (2015); Folgado H., Duarte R., Marques P., Sampaio J., The effects of congested fixtures period on tactical and physical performance in elite football, J. Sports Sci, 33, pp. 1238-1247, (2015); Goncalves B., Coutinho D., Travassos B., Folgado H., Caixinha P., Sampaio J., Speed synchronization, physical workload and match-to- match performance variation of elite football players, PLoS ONE, 13, (2018); Smith M., Zeuwts L., Lenoir M., Hens N., De Jong L., Coutts A., Mental fatigue impairs soccer-specific decision-making skill, J. Sports Sci, 34, pp. 1297-1304, (2016); Owoeye O.B.A., VanderWey M.J., Pike I., Reducing Injuries in Soccer (Football): An Umbrella Review of Best Evidence Across the Epidemiological Framework for Prevention, Sports Med. Open, 6, (2020); Pfirrmann D., Herbst M., Ingelfinger P., Simon P., Tug S., Analysis of Injury Incidences in Male Professional Adult and Elite Youth Soccer Players: A Systematic Review, J. Athl. Train, 51, pp. 410-424, (2016); Fuller C.W., Ekstrand J., Junge A., Andersen T.E., Bahr R., Dvorak J., Hagglund M., McCrory P., Meeuwisse W.H., Consensus statement on injury definitions and data collection procedures in studies of football (Soccer) Injuries, Br. J. Sports Med, 40, pp. 193-201, (2006); McCall A., Pruna R., Van Der Horst N., Dupont G., Buchheit M., Coutts A.J., Impellizzeri F.M., Fanchini M., Exercise-Based Strategies to Prevent Muscle Injury in Male Elite Footballers: An Expert-Led Delphi Survey of 21 Practitioners Belonging to 18 Teams from the Big-5 European Leagues, Sports Med, 50, pp. 1667-1681, (2020); Harper D.J., Carling C., Kiely J., High-Intensity Acceleration and Deceleration Demands in Elite Team Sports Competitive Match Play: A Systematic Review and Meta-Analysis of Observational Studies, Sports Med, 49, pp. 1923-1947, (2019); Impellizzeri F.M., Menaspa P., Coutts A.J., Kalkhoven J., Menaspa M.J., Training Load and Its Role in Injury Prevention, Part I: Back to the Future, J. Athl. Train, 55, pp. 885-892, (2020); Suarez-Arrones L., De Alba B., Roll M., Torreno I., Strutt S., Freyler K., Ritzmann R., Player Monitoring in Professional Soccer: Spikes in Acute:Chronic Workload Are Dissociated From Injury Occurrence, Front. Sports Act. Living, 2, (2020); Bowen L., Gross A.S., Gimpel M., Bruce-Low S., Li F.X., Spikes in acute:chronic workload ratio (ACWR) associated with a 5- 7 times greater injury rate in English Premier League football players: A comprehensive 3-year study, Br. J. Sports Med, 54, pp. 731-738, (2020)","","","MDPI AG","16617827","","","33514057","English","Int. J. Environ. Res. Public Health","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85100504531" "Austin K.; Lee B.J.; Flood T.R.; Toombs J.; Borisova M.; Lauder M.; Heslegrave A.; Zetterberg H.; Smith N.A.","Austin, Kieran (57205408747); Lee, Ben J (56587075700); Flood, Tessa R (57194207523); Toombs, Jamie (14029427000); Borisova, Mina (57220122962); Lauder, Mike (8695538800); Heslegrave, Amanda (36463576300); Zetterberg, Henrik (6701454676); Smith, Neal a (26427089000)","57205408747; 56587075700; 57194207523; 14029427000; 57220122962; 8695538800; 36463576300; 6701454676; 26427089000","Serum neurofilament light concentration does not increase following exposure to low velocity football heading","2021","Science and Medicine in Football","5","3","","188","194","6","5","10.1080/24733938.2020.1853210","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096979057&doi=10.1080%2f24733938.2020.1853210&partnerID=40&md5=8efc04f2abd91571ab55b3a5ede56a76","Institute of Sport, University of Chichester, Chichester, United Kingdom; Centre for Discovery Brain Sciences, UK Dementia Research Institute, The University of Edinburgh, United Kingdom; Department of Neurodegenerative Diseases, University College London, London, United Kingdom; UK Dementia Research Institute at UCL, London, United Kingdom; Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden; Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden","Austin K., Institute of Sport, University of Chichester, Chichester, United Kingdom; Lee B.J., Institute of Sport, University of Chichester, Chichester, United Kingdom; Flood T.R., Institute of Sport, University of Chichester, Chichester, United Kingdom; Toombs J., Centre for Discovery Brain Sciences, UK Dementia Research Institute, The University of Edinburgh, United Kingdom; Borisova M., Department of Neurodegenerative Diseases, University College London, London, United Kingdom, UK Dementia Research Institute at UCL, London, United Kingdom; Lauder M., Institute of Sport, University of Chichester, Chichester, United Kingdom; Heslegrave A., Department of Neurodegenerative Diseases, University College London, London, United Kingdom, UK Dementia Research Institute at UCL, London, United Kingdom; Zetterberg H., Department of Neurodegenerative Diseases, University College London, London, United Kingdom, UK Dementia Research Institute at UCL, London, United Kingdom, Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden, Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden; Smith N.A., Institute of Sport, University of Chichester, Chichester, United Kingdom","Objectives: To investigate if heading frequency and impact biomechanics in a single session influence the concentration of serum neurofilament light (NF-L), a sensitive biomarker for axonal damage, up to 7 days after heading incident at ball velocities reflecting basic training drills. Methods: Forty-four males were randomized into either control (n = 8), 10 header (n = 12), 20 header (n = 12) or 40 header (n = 12) groups. Linear and angular head accelerations were quantified during heading. Venous blood samples were taken at baseline, 6 h, 24 h and 7 days after heading. Serum NF-L was quantified using Quanterix NF-L assay kit on the Simoa HD-1 Platform. Results: Serum NF-L did not alter over time (p = 0.44) and was not influenced by number of headers [p = 0.47; mean (95% CI) concentrations at baseline 6.00 pg · ml−1 (5.00–7.00 pg · ml−1); 6 h post 6.50 pg · ml−1 (5.70–7.29 pg · ml−1); 24 h post 6.07 pg · ml−1 (5.14–7.01 pg · ml−1); and 7 days post 6.46 pg · ml−1 (5.45–7.46 pg · ml−1)]. There was no relationship between percentage change in NF-L and summed session linear and angular head accelerations. Conclusion: In adult men, heading frequency or impact biomechanics did not affect NF-L response during a single session of headers at ball velocities reflective of basic training tasks. © 2020 Informa UK Limited, trading as Taylor & Francis Group.","axonal damage; biomechanics; brain injury; heading; Soccer","Acceleration; Adult; Biomechanical Phenomena; Football; Humans; Intermediate Filaments; Male; Soccer; acceleration; adult; biomechanics; controlled study; football; human; intermediate filament; male; physiology; randomized controlled trial; soccer","Augustus S., Amca A.M., Hudson P.E., Improved accuracy of biomechanical motion data obtained during impacts using a time-frequency low-pass filter, J Biomech, (2020); Bernick C., Zetterberg H., Shan G., Longitudinal performance of plasma neurofilament light and tau in professional fighters : the professional fighters brain health study, J Neurotrauma, pp. 1-22, (2018); Buuren S.V., Groothuis-Oudshoom K., Mice: Multivariate imputation by chained equations in R. J. Stat. Softwre, pp. 1-68, (2010); Georgakis A., Stergioulas L.K., Giakas G., Automatic algorithm for filtering kinematic signals with impacts in the Wigner representation, Med Biol Eng Comput, 40, pp. 625-633, (2002); Georgakis A., Subramaniam S.R., Estimation of the second derivative of kinematic impact signals using fractional fourier domain filtering, IEEE Trans Biomed Eng, 56, pp. 996-1004, (2009); Giakas G., Stergioulas L.K., Vourdas A., Time-frequency analysis and filtering of kinematic signals with impacts using the Wigner function: accurate estimation of the second derivative, J Biomech, 33, pp. 567-574, (2000); Grinberg L., Anghinah R., Nascimento C.F., Chronic traumatic encephalopathy presenting as Alzheimer’s disease in a retired soccer player, J Alzheimer’s Dis, 54, pp. 169-174, (2016); Javed A., Stankiewicz J., Point/counterpoint: neurofilament light, (2020); Kassambara A., rstatix: Pipe-Friendly Framework for Basic Statistical Tests. R package version 0.3.1, (2019); Kontos A.P., Braithwaite R., Chrisman S.P.D., Systematic review and meta-analysis of the effects of football heading, Br J Sports Med, 51, pp. 1118-1124, (2017); Ling H., Morris H.R., Neal J.W., Mixed pathologies including chronic traumatic encephalopathy account for dementia in retired association football (soccer) players, Acta Neuropathol, 133, pp. 337-352, (2017); Little R.J.A., A test of missing completely at random for multivariate data with missing values, J Am Stat Assoc, 83, pp. 1198-1202, (1988); Mackay D.F., Russell E.R., Stewart K., Neurodegenerative disease mortality among former professional soccer players, N Engl J Med, pp. 1-8, (2019); McCuen E., Svaldi D., Breedlove K., Collegiate women’s soccer players suffer greater cumulative head impacts than their high school counterparts, J Biomech, 48, pp. 3729-3732, (2015); Mckee A.C., Abdolmohammadi B., Stein T.D., The neuropathology of chronic traumatic encephalopathy, (2018); Merchant-Borna K., Asselin P., Narayan D., Novel method of weighting cumulative helmet impacts improves correlation with brain white matter changes after one football season of sub-concussive head blows, Ann Biomed Eng, 44, pp. 3679-3692, (2016); Nunome H., Lake M., Georgakis A., Impact phase kinematics of instep kicking in soccer, J Sports Sci, 24, pp. 11-22, (2006); Oliver J.M., Jones M.T., Kirk K.M., Serum neurofilament light in American football athletes over the course of a season, J Neurotrauma, 33, pp. 1784-1789, (2016); Rubin L.H., Tierney R., Kawata K., NFL blood levels are moderated by subconcussive impacts in a cohort of college football players, Brain Inj, (2019); Rubin T.G., Catenaccio E., Fleysher R., MRI-defined white matter microstructural alteration associated with soccer heading is more extensive in women than men, Radiology, (2018); Sandmo S.B., Filipcik P., Cente M., Neurofilament light and tau in serum after head-impact exposure in soccer, Brain Inj, 34, pp. 602-609, (2020); Shahim P., Gren M., Liman V., Serum neurofilament light protein predicts clinical outcome in traumatic brain injury, Sci Rep, 6, pp. 1-9, (2016); Shahim P., Tegner Y., Marklund N., Neurofilament light and tau as blood biomarkers for sports-related concussion, Neurology, 90, pp. e1780-e1788, (2018); Shahim P., Zetterberg H., Tegner Y., Serum neurofilament light as a biomarker for mild traumatic brain injury in contact sports, Neurology, 88, pp. 1788-1794, (2017); Shewchenko N., Withnall C., Keown M., Heading in football. Part 1: development of biomechanical methods to investigate head response, Br J Sports Med, 39, pp. 10-26, (2005); Tyson A.M., Duma S.M., Rowson S., Laboratory evaluation of low-cost wearable sensors for measuring head impacts in sports, J Appl Biomech, 34, pp. 320-326, (2018); van Ginkel J.R., Linting M., Rippe R.C.A., Rebutting existing misconceptions about multiple imputation as a method for handling missing data, J Pers Assess, pp. 1-12, (2019); Wallace C., Smirl J.D., Zetterberg H., Heading in soccer increases serum neurofilament light protein and SCAT3 symptom metrics, BMJ Open Sport Exerc Med, 4, pp. 1-5, (2018); Wirsching A., Chen Z., Bevilacqua Z.W., Association of acute increase in plasma neurofilament light with repetitive subconcussive head impacts: a pilot randomized control trial, J Neurotrauma, 36, pp. 548-553, (2019); Zetterberg H., Blennow K., Fluid biomarkers for mild traumatic brain injury and related conditions, Nat Rev Neurol, 12, pp. 563-574, (2016); Zetterberg H., Jonsson M., Rasulzada A., No neurochemical evidence for brain injury caused by heading in soccer, Br J Sports Med, 41, pp. 574-577, (2007); Zuckerman S., Lee Y., Odom M., Recovery from sports-related concussion: days to return to neurocognitive baseline in adolescents versus young adults, Surg Neurol Int, 3, (2012)","K. Austin; Institute of Sport, University of Chichester, Chichester, United Kingdom; email: K.Austin@chi.ac.uk","","Taylor and Francis Ltd.","24733938","","","35077291","English","Sci. Med. Footb.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85096979057" "Scoz R.D.; Alves B.M.O.; Burigo R.L.; Vieira E.R.; Ferreira L.M.A.; Da Silva R.A.; Hirata R.P.; Amorim C.F.","Scoz, Robson Dias (57189907286); Alves, Bruno Mazziotti Oliveira (57202754615); Burigo, Ricardo Lima (57202757595); Vieira, Edgar Ramos (7102986953); Ferreira, Luciano Maia Alves (7202856789); Da Silva, Rubens Alexandre (56667857300); Hirata, Rogerio Pessoto (35181344100); Amorim, Cesar Ferreira (23024072100)","57189907286; 57202754615; 57202757595; 7102986953; 7202856789; 56667857300; 35181344100; 23024072100","Strength development according with age and position: A 10-year study of 570 soccer players","2021","BMJ Open Sport and Exercise Medicine","7","1","e000927","","","","6","10.1136/bmjsem-2020-000927","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102188679&doi=10.1136%2fbmjsem-2020-000927&partnerID=40&md5=899aeef6a0e465097322d716141b3bb4","Universidade Cidade de Sao Paulo (UNICID), Sao Paulo, Brazil; Physical Therapy Department, Arsenal Football Club, London, United Kingdom; Physical Therapy Department, Florida International University (FIU), Miami, FL, United States; KinesioLab, Instituto Piaget, Silves, Portugal; Laboratoire de Recherche BioNR, Université du Quebec À Chicoutimi (UQAC), Saguenay, QC, Canada; Department of Health Science and Technology, Aalborg Universitet, Aalborg, Denmark","Scoz R.D., Universidade Cidade de Sao Paulo (UNICID), Sao Paulo, Brazil; Alves B.M.O., Universidade Cidade de Sao Paulo (UNICID), Sao Paulo, Brazil, Physical Therapy Department, Arsenal Football Club, London, United Kingdom; Burigo R.L., Universidade Cidade de Sao Paulo (UNICID), Sao Paulo, Brazil; Vieira E.R., Physical Therapy Department, Florida International University (FIU), Miami, FL, United States; Ferreira L.M.A., KinesioLab, Instituto Piaget, Silves, Portugal; Da Silva R.A., Laboratoire de Recherche BioNR, Université du Quebec À Chicoutimi (UQAC), Saguenay, QC, Canada; Hirata R.P., Department of Health Science and Technology, Aalborg Universitet, Aalborg, Denmark; Amorim C.F., Universidade Cidade de Sao Paulo (UNICID), Sao Paulo, Brazil, Physical Therapy Department, Florida International University (FIU), Miami, FL, United States, KinesioLab, Instituto Piaget, Silves, Portugal, Laboratoire de Recherche BioNR, Université du Quebec À Chicoutimi (UQAC), Saguenay, QC, Canada","Background/aim The purpose of this study was to compare the isokinetic peak torque profiles from the quadriceps and hamstrings muscles during concentric and eccentric contractions in elite Brazilian soccer players across different field positions and age categories. Our hypothesis was that soccer players from different field positions are subjected to different ageing-related effects on their isokinetic peak torque. Methods This is a retrospective study based on professional elite-level soccer players between the years 2009 and 2019. It included 570 adult males who played for at least 5 years on first or second Brazilian divisions. Playing positions were divided as: goalkeepers, defenders, sidebacks, midfielders and forwards. Age categories were also divided as: G1 (17-20 years old), G2 (21-24 years old), G3 (25-28 years old), G4 (29-32 years old) and G5 (33 years old or more). Results The results indicate a moderate effect of age (F(4545)=8.197; p<0.001; Î • 2 =0.057) and a small effect of playing position (F(4545)=2.993; p<0.05; Î • 2 =0.021) on torque of concentric extensors; mainly from midfielders and goalkeepers with 29 years or more. Conclusions Soccer players from different field positions are subjected to different ageing related effects on their muscular performance during their career special attention should be given to these players to avoid reduction in physical performance. © Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.","Aging; Assessing physical training modalities in enhancing sports performance; Athlete; Biomechanics; Soccer","adolescent; adult; aging; Article; body mass; Brazilian; concentric muscle contraction; controlled study; eccentric muscle contraction; elite athlete; hamstring muscle; human; isokinetic peak torque; major clinical study; male; muscle strength; musculoskeletal system parameters; physical performance; priority journal; quadriceps femoris muscle; reference value; retrospective study; soccer player; young adult","Ma R., Steffen K., Nilstad A., Et al., Normative quadriceps and hamstring muscle strength values for female, healthy, elite Handball and football players, J Strength Cond Res, 32, pp. 2314-2323, (2018); Rey E., Costa P.B., Corredoira F.J., Et al., Effects of age on physical match performance in professional soccer players, J Strength Cond Res, (2019); Sal De Rellan-Guerra A., Rey E., Kalen A., Et al., Age-related physical and technical match performance changes in elite soccer players, Scand J Med Sci Sports, 29, pp. 1421-1427, (2019); Rahnama N., Lees A., Bambaecichi E., Comparison of muscle strength and fexibility between the preferred and non-preferred leg in English soccer players, Ergonomics, 48, pp. 1568-1575, (2005); Houweling T.A.W., Head A., Hamzeh MA., Validity of isokinetic testing for previous hamstring injury detection in soccer players, Isokinet Exerc Sci, 17, pp. 213-220, (2009); Paul D.J., Nassis G.P., Testing strength and power in soccer players: The application of conventional and traditional methods of assessment, J Strength Cond Res, 29, pp. 1748-1758, (2015); Manou V., Arseniou P., Gerodimos V., Et al., Test-retest reliability of an isokinetic muscle endurance test, Isokinet Exerc Sci, 10, pp. 177-181, (2002); Ribeiro-Alvares J.B., Dornelles M.P., Fritsch C.G., Et al., Prevalence of hamstring strain injury risk factors in professional and Under-20 male football (soccer) players, J Sport Rehabil, 29, pp. 339-345, (2020); Powell C., Jensen J., Johnson S., Functional performance measures used for Return-to-Sport criteria in youth following lower-extremity injury, J Sport Rehabil, 27, pp. 581-590, (2018); Scoz R.D., Amorim C.F., Mazziotti B.O.A., Et al., Diagnostic validity of an isokinetic testing to identify partial anterior cruciate ligament injuries, J Sport Rehabil, 29, pp. 1-7, (2020); Burigo R.L., Scoz R.D., BMdeO A., Et al., Concentric and eccentric isokinetic hamstring injury risk among 582 professional elite soccer players: A 10-years retrospective cohort study, Bmj Open Sport Exerc Med, 6, (2020); Von Elm E., Altman D.G., Egger M., Et al., The strengthening the reporting of observational studies in epidemiology (STROBE) statement: Guidelines for reporting observational studies, Lancet, 370, pp. 1453-1457, (2007); Motheral B., Brooks J., Ma C., Et al., A checklist for retrospective database studies-report of the ISPOR Task Force on Retrospective Databases, Value Health, 6, pp. 90-97, (2003); Harriss D.J., MacSween A., Atkinson G., Ethical standards in sport and exercise science research: 2020 update, Int J Sports Med, 40, pp. 813-817, (2019); Pincivero D.M., Coelho A.J., Campy R.M., Gender differences in perceived exertion during fatiguing knee extensions, Med Sci Sports Exerc, 36, pp. 109-117, (2004); Robertson R.J., Goss F.L., Metz K.F., Perception of physical exertion during dynamic exercise: A tribute to Professor Gunnar A. V. Borg, Percept Mot Skills, 86, pp. 183-191, (1998); Logerstedt D.S., Snyder-Mackler L., Ritter R.C., Et al., Knee pain and mobility impairments: Meniscal and articular cartilage lesions, J Orthop Sports Phys Ther, 40, pp. A1-A597, (2010); Ahtiainen J.P., Pakarinen A., Alen M., Et al., Short vs. long rest period between the sets in hypertrophic resistance training: Infuence on muscle strength, size, and hormonal adaptations in trained men, J Strength Cond Res, 19, pp. 572-582, (2005); Kannus P., Isokinetic evaluation of muscular performance: Implications for muscle testing and rehabilitation, Int J Sports Med, 15, pp. S11-S18, (1994); Osternig L.R., Isokinetic dynamometry: Implications for muscle testing and rehabilitation, Exerc Sport Sci Rev, 14, pp. 45-80, (1986); Amaral G.M., Marinho H.V.R., Ocarino J.M., Et al., Muscular performance characterization in athletes: A new perspective on isokinetic variables, Braz J Phys Ther, 18, pp. 521-529, (2014); Espirito-Santo H., Daniel F., Calculating and reporting effect sizes on scientifc papers (3): Guide to report regression models and ANOVA effect sizes Calcular E apresentar tamanhos do efeito em trabalhos científcos (3): Guia para reportar os tamanhos do efeito para análises de regressão E ANOVAs, Revista Portuguesa de Investigação Comportamental e Social, 4, pp. 43-60, (2018); Lakens D., Calculating and reporting effect sizes to facilitate cumulative science: A practical primer for t-tests and ANOVAs, Front Psychol, 4, (2013); Schuth G., Carr G., Barnes C., Et al., Positional interchanges infuence the physical and technical match performance variables of elite soccer players, J Sports Sci, 34, pp. 501-508, (2016); Brent J.L., Myer G.D., Ford K.R., Et al., The effect of sex and age on isokinetic hip-abduction torques, J Sport Rehabil, 22, pp. 41-46, (2013); Deprez D., Fransen J., Boone J., Et al., Characteristics of high-level youth soccer players: Variation by playing position, J Sports Sci, 33, pp. 243-254, (2015); Romann M., Fuchslocher J., Relative age effects in Swiss junior soccer and their relationship with playing position, Eur J Sport Sci, 13, pp. 356-363, (2013); Al Haddad H., Simpson B.M., Buchheit M., Et al., Peak match speed and maximal sprinting speed in young soccer players: Effect of age and playing position, Int J Sports Physiol Perform, 10, pp. 888-896, (2015); Towlson C., Cobley S., Midgley A.W., Et al., Relative age, maturation and physical biases on position allocation in Elite-Youth soccer, Int J Sports Med, 38, pp. 201-209, (2017); Brustio P.R., Lupo C., Ungureanu A.N., Et al., The relative age effect is larger in Italian soccer top-level youth categories and smaller in Serie a, PLoS One, 13, (2018); Slimani M., Nikolaidis P.T., Anthropometric and physiological characteristics of male soccer players according to their competitive level, playing position and age group: A systematic review, J Sports Med Phys Fitness, 59, pp. 141-163, (2019); Hannon J.P., Wang-Price S., Garrison J.C., Et al., Normalized hip and knee strength in two age groups of adolescent female soccer players, J Strength Cond Res, (2019); Rey E., Costa P.B., Corredoira F.J., Et al., Effects of age on physical match performance in professional soccer players, J Strength Cond Res, (2019); Svensson K., Alricsson M., Karneback G., Et al., Muscle injuries of the lower extremity: A comparison between young and old male elite soccer players, Knee Surg Sports Traumatol Arthrosc, 24, pp. 2293-2299, (2016); Dauty M., Menu P., Fouasson-Chailloux A., Et al., Prediction of hamstring injury in professional soccer players by isokinetic measurements, Muscles Ligaments Tendons J, 6, pp. 116-123, (2016); Wik E.H., Auliffe S.M., Read P.J., Examination of physical characteristics and positional differences in professional soccer players in Qatar, Sports, 7, (2018)","C.F. Amorim; Universidade Cidade de Sao Paulo (UNICID), Sao Paulo, Brazil; email: cesar.amorim@unicid.edu.br","","BMJ Publishing Group","20557647","","","","English","BMJ Open Sport Exerc. Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85102188679" "Palucci Vieira L.H.; Barbieri F.A.; Kellis E.; Oliveira L.; Aquino R.; Cunha S.; Bedo B.; Manechini J.; Santiago P.","Palucci Vieira, Luiz H. (56789595600); Barbieri, Fabio A. (35798078800); Kellis, Eleftherios (6603815400); Oliveira, Lucas (57192647430); Aquino, Rodrigo (57192645540); Cunha, Sérgio (16416879600); Bedo, Bruno (56790057800); Manechini, João (57217054482); Santiago, Paulo (36098423400)","56789595600; 35798078800; 6603815400; 57192647430; 57192645540; 16416879600; 56790057800; 57217054482; 36098423400","Organisation of instep kicking in young U11 to U20 soccer players","2021","Science and Medicine in Football","5","2","","111","120","9","6","10.1080/24733938.2020.1807043","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85089520055&doi=10.1080%2f24733938.2020.1807043&partnerID=40&md5=07508f2f7309c4c17ac6522b14e647ee","LaBioCoM Biomechanics and Motor Control Laboratory, School of Physical Education and Sport, University of São Paulo, Campus Ribeirão Preto, Ribeirão Preto, Brazil; FMRP Faculty of Medicine at Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil; MOVI-LAB Human Movement Research Laboratory, School of Sciences, Physical Education Department, UNESP São Paulo State University, Bauru, Brazil; Laboratory of Neuromechanics, Department of Physical Education and Sports Sciences of Serres, Aristotle University of Thessaloniki, Serres, Greece; Department of Sports, Center of Physical Education and Sports (CEFD), Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil; LIB Laboratory of Instrumentation for Biomechanics, FEF Faculty of Physical Education, UNICAMP, Campinas, Brazil","Palucci Vieira L.H., LaBioCoM Biomechanics and Motor Control Laboratory, School of Physical Education and Sport, University of São Paulo, Campus Ribeirão Preto, Ribeirão Preto, Brazil, FMRP Faculty of Medicine at Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil, MOVI-LAB Human Movement Research Laboratory, School of Sciences, Physical Education Department, UNESP São Paulo State University, Bauru, Brazil; Barbieri F.A., MOVI-LAB Human Movement Research Laboratory, School of Sciences, Physical Education Department, UNESP São Paulo State University, Bauru, Brazil; Kellis E., Laboratory of Neuromechanics, Department of Physical Education and Sports Sciences of Serres, Aristotle University of Thessaloniki, Serres, Greece; Oliveira L., FMRP Faculty of Medicine at Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil; Aquino R., Department of Sports, Center of Physical Education and Sports (CEFD), Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil; Cunha S., LIB Laboratory of Instrumentation for Biomechanics, FEF Faculty of Physical Education, UNICAMP, Campinas, Brazil; Bedo B., LaBioCoM Biomechanics and Motor Control Laboratory, School of Physical Education and Sport, University of São Paulo, Campus Ribeirão Preto, Ribeirão Preto, Brazil, FMRP Faculty of Medicine at Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil; Manechini J., FMRP Faculty of Medicine at Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil; Santiago P., LaBioCoM Biomechanics and Motor Control Laboratory, School of Physical Education and Sport, University of São Paulo, Campus Ribeirão Preto, Ribeirão Preto, Brazil, FMRP Faculty of Medicine at Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil","Aim: The main purpose of the study was to investigate kicking kinematics and performance in young-trained soccer players according to age, playing status, and biological maturity.Methods: Youth male soccer players (N = 105) from five age groups (under-11, under-13, under-15, under-17, and under-20) were evaluated. Four digital video cameras (300 Hz) captured the participants’ lower extremity and ball kinematics during penalty kick trials using dominant limb.Results: It was possible to identify non-linear differences in angular joint kinematics (displacement and velocity) of hip, knee and ankle across age-groups. Kicked ball speed and lower extremity mechanical factors discriminated among under-15 players with distinct status (e.g., ball speed and foot-to-ball speed ratio: starters > non-starters and non-participating substitutes; effect size = 1.05 to 1.49 [large]). Estimated maturity offset was not correlated with performance outputs in any age-group (r = −0.28 to 0.39; P > 0.05).Conclusion: We conclude that from ages ~10 to 19 years, differences in kicking kinematics and performance vary across time in youth players. Transition phase between under-13 to under-15 appears the most sensible period for powerful instep kick performance development. Kicking speed in youth soccer is discriminated according to player status, but not estimated biological maturity. © 2020 Informa UK Limited, trading as Taylor & Francis Group.","3-D kinematics; association football; coordination; development; technique","Adolescent; Adult; Biomechanical Phenomena; Child; Foot; Humans; Knee; Lower Extremity; Male; Soccer; Young Adult; adolescent; adult; biomechanics; child; foot; human; knee; lower limb; male; soccer; young adult","Barbieri F.A., Gobbi L.T., Santiago P.R., Cunha S.A., Dominant-non-dominant asymmetry of kicking a stationary and rolling ball in a futsal context, J Sports Sci, 33, 13, pp. 1411-1419, (2015); Barros R.M.L., Russomanno T.G., Brenzikofer R., Figueroa P.J., A method to synchronise video cameras using the audio band, J Biomech, 39, 4, pp. 776-780, (2006); Bennett N., Woodcock S., Pluss M.A., Bennett K.J.M., Deprez D., Vaeyens R., Lenoir M., Fransen J., Forecasting the development of explosive leg power in youth soccer players, Sci Med Football, 3, 2, pp. 131-137, (2019); 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Zatsiorsky V.M., Kinematics of Human Motion, (1998)","L.H. Palucci Vieira; Bauru, 17033-360, Brazil; email: luiz.palucci@unesp.br","","Taylor and Francis Ltd.","24733938","","","35077335","English","Sci. Med. Footb.","Article","Final","","Scopus","2-s2.0-85089520055" "Chen Z.; Hemami M.","Chen, Zengshi (56099153200); Hemami, Mahmoud (56600387600)","56099153200; 56600387600","Sliding mode control of kicking a soccer ball in the sagittal plane","2007","IEEE Transactions on Systems, Man, and Cybernetics Part A:Systems and Humans","37","6","","1131","1139","8","5","10.1109/TSMCA.2007.906573","https://www.scopus.com/inward/record.uri?eid=2-s2.0-36248968848&doi=10.1109%2fTSMCA.2007.906573&partnerID=40&md5=c7af5578d7a974a52e230797a7e28cf9","Pioneer Air Systems, Inc., Wartburg, TN 37887, United States; Department of Mechanical Engineering, Isfahan University of Technology, Isfahan 8415683111, Iran","Chen Z., Pioneer Air Systems, Inc., Wartburg, TN 37887, United States; Hemami M., Department of Mechanical Engineering, Isfahan University of Technology, Isfahan 8415683111, Iran","Collision modeling and control are important aspects of simulation of many human and robotic tasks. A scientific inquiry into a foot-ball collision is made in this paper from the perspective of dynamics, control, modeling, and simulation. As an extension of the Hertzian contact model, our generalized compliant collision model with nonlinear elasticity and damping is tested by a human lower limb kicking a soccer ball. The experiment-based elasticity is used to model the energy transfer of the foot-ball collision and overcome some problems caused by impulse impact modeling. The nonlinear damping in proportion to a restitution-related constant eliminates impact discontinuity. A robust sliding mode controller is developed to track the preplanned trajectory against modeling uncertainties and impact disturbances. The collision duration (about 0.014 s), the ball departure velocity (31.83 m/s), the average foot-ball collision force (about 975.5 N), and the ball peak deformation (about 0.079 m) obtained by simulation match the reported results. The observed three phases of the foot-ball collision are confirmed by our simulation, and the ""follow-through"" phenomenon in sports is demonstrated. © 2007 IEEE.","Kicking; Restitution; Sliding mode control; Viscoelastic","Biomedical engineering; Computer simulation; Human computer interaction; Human engineering; Robust control; Sliding mode control; Collision modeling; Hertzian contact model; Robust sliding; Biomechanics","Jalics L., Trajectory planning for terrain adaptive rhythmic movements of a neuromuscular biped,, (1996); Zheng Y.F., Hemami H., Impact effects of biped contact with the environment, IEEE Trans. Syst., Man, Cybern. A, Syst., Humans, SMCA-18, 3, pp. 437-443, (1984); Dicks M., Kingman J., The effect of altered ball approach on kicking kinematics and shot accuracy: A soccer case study, J. Sports Sci, 23, 2, pp. 99-100, (2005); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, J. Sports Sci, 24, 1, pp. 11-22, (2006); Levanon J., Three-dimensional kinematic and kinetic analysis of two common kicking techniques in soccer,, (1995); Tant C.L., Segmental interactions of a three-dimensional soccer instep kick motion,, (1990); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics, VIII-B, pp. 695-700, (1990); Plagenhoef S., Patterns of Human Motion - A Cinematographic Analysis, (1990); Andersen T.B., Dorge H.C., Thomsen F.I., Collisions in soccer kicking, Sports Eng, 2, 2, pp. 121-125, (1999); Den Hartog J.P., Mechanics, (1948); Lindbeck L., Impulse and moment of impulse in the leg joints by impact from kicking, ASME J. Biomech. Eng, 3, 105, pp. 108-111, (1983); Huang T.C., Roberts E.M., Youm Y., Biomechanics of kicking, Human Body Dynamics: Impact, Occupational, and Atheletic Aspects, pp. 409-443, (1982); Tsaousidis N., Zatsiorsky V., Two types of ball-effector interaction and their relative contribution to soccer kicking, Human Movement Sci, 15, 6, pp. 861-876, (1996); Taiana F., Grehaigne J.F., Cometti G., The influence of maximal strength training of lower limbs of soccer players on their physical and kicking performances, Science and Football II, pp. 98-103, (1993); Walker I.D., The use of kinematic redundancy in reducing impact and contact effects in manipulation, Proc. IEEE Conf. Robot. Autom, pp. 434-439, (1990); Choi J.Y., So B.R., Yi B.J., Kim W., Sub I.H., Impact based trajectory planning of a soccer ball in a kicking robot, Proc. Int. Conf. Robot. Autom, pp. 2834-2840, (2005); Marhefka D.W., Orin D.E., A compliant contact model with nonlinear damping for simulation of robotic systems, IEEE Trans. Syst., Man Cybern. A, Syst., Humans, 29, 6, pp. 566-572, (1999); Wang Y.T., Kumar V., Abel J., Dynamics of rigid bodies undergoing multiple frictional contacts, Proc. IEEE Int. Conf. Robot. Autom, pp. 2764-2769, (1992); Mills J.K., Nguyen C.V., Robotic manipulator collisions: Modeling and simulation, Trans. ASME J. Dyn. Syst. Meas. Control, 114, 4, pp. 650-659, (1992); Yigit A.S., The effect of flexibility on the impact response of a two link rigid-flexible manipulator, J. Sound Vib, 77, 3, pp. 349-361, (1994); Asai T., Carre M.J., Akatsuka T., Haake S.J., The curve kick of a football I: Impact with the foot, Sports Eng, 5, 4, pp. 183-192, (2002); Wang J.S., Griffin M., Kinematic analysis of the soccer curve ball shot, Strength Conditioning, 19, 1, pp. 54-57, (1997); Asai T., Akatsuka T., Nasako M., Murakami O., Computer simulation of curve-ball kicking in soccer, Eng. Sport, pp. 433-440, (1998); Carre M.J., Asai T., Akatsuka T., Haake S.J., The curve kick of a football II: Hight through the air, Eng. Sport, 5, 4, pp. 193-200, (2002); Kaveh P., Shtessel Y., Higher order sliding mode control for blood glucose regulation, Proc. Int. Workshop Variable Structure Syst, pp. 11-16, (2006); Chang T.-H., Hurmuzlu Y., Sliding control without reaching phase and its application to biped locomotion, Trans. ASME J. Dyn. Syst. Meas. Control, 115, pp. 447-455, (1993); Mu X.P., Wu Q., Development of a complete dynamic model of a planar five-link biped and sliding mode control of its locomotion during the double support phase, Int. J. Control, 77, 8, pp. 789-799, (2004); Utkin V., Guldner J., Shi J.X., Sliding Mode Control in Electromechanical Systems, (1999); Hunt K.H., Crossley F.R.E., Coefficient of restitution interpreted as damping in vibroimpact, Trans. ASME J. Appl. Mech, 42, pp. 440-445, (1975); Franklin G.F., Powell J.D., Emami-Naein A., Feedback Control of Dynamic Systems, (1991); Shabana A.A., Dynamics of Multibody Systems, (1989); Muybridge E., Muybridge's Complete Hwnan and Animal Locomotion, (1979); Smith G.D., Numerical Solution of Partial Differential Equations: Finite Difference Methods, (1985)","Z. Chen; Pioneer Air Systems, Inc., Wartburg, TN 37887, United States; email: chen.905@osu.edu","","","10834427","","ITSHF","","English","IEEE Trans Syst Man Cybern Pt A Syst Humans","Article","Final","","Scopus","2-s2.0-36248968848" "Sigurðsson H.B.; Briem K.","Sigurðsson, Haraldur B. (57526782600); Briem, Kristín (16051954700)","57526782600; 16051954700","Cluster analysis successfully identifies clinically meaningful knee valgus moment patterns: frequency of early peaks reflects sex-specific ACL injury incidence","2019","Journal of Experimental Orthopaedics","6","1","37","","","","7","10.1186/s40634-019-0205-5","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85070393398&doi=10.1186%2fs40634-019-0205-5&partnerID=40&md5=73da2eedf79d0c02083928375caf0683","Research Centre for Movement Sciences, University of Iceland, Reykjavík, Iceland","Sigurðsson H.B., Research Centre for Movement Sciences, University of Iceland, Reykjavík, Iceland; Briem K., Research Centre for Movement Sciences, University of Iceland, Reykjavík, Iceland","Background: Biomechanical studies of ACL injury risk factors frequently analyze only a fraction of the relevant data, and typically not in accordance with the injury mechanism. Extracting a peak value within a time series of relevance to ACL injuries is challenging due to differences in the relative timing and size of the peak value of interest. Aims/hypotheses: The aim was to cluster analyze the knee valgus moment time series curve shape in the early stance phase. We hypothesized that 1a) There would be few discrete curve shapes, 1b) there would be a shape reflecting an early peak of the knee valgus moment, 2a) youth athletes of both sexes would show similar frequencies of early peaks, 2b) adolescent girls would have greater early peak frequencies. Methods: N = 213 (39% boys) youth soccer and team handball athletes (phase 1) and N = 35 (45% boys) with 5 year follow-up data (phase 2) were recorded performing a change of direction task with 3D motion analysis and a force plate. The time series of the first 30% of stance phase were cluster analyzed based on Euclidean distances in two steps; shape-based main clusters with a transformed time series, and magnitude based sub-clusters with body weight normalized time series. Group differences (sex, phase) in curve shape frequencies, and shape-magnitude frequencies were tested with chi-squared tests. Results: Six discrete shape-clusters and 14 magnitude based sub-clusters were formed. Phase 1 boys had greater frequency of early peaks than phase 1 girls (38% vs 25% respectively, P < 0.001 for full test). Phase 2 girls had greater frequency of early peaks than phase 2 boys (42% vs 21% respectively, P < 0.001 for full test). Conclusions: Cluster analysis can reveal different patterns of curve shapes in biomechanical data, which likely reflect different movement strategies. The early peak shape is relatable to the ACL injury mechanism as the timing of its peak moment is consistent with the timing of injury. 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A review of concepts, Sports Med, 14, pp. 82-99, (1992); Walden M., Hagglund M., Werner J., Ekstrand J., The epidemiology of anterior cruciate ligament injury in football (soccer): a review of the literature from a gender-related perspective, Knee Surg Sports Traumatol Arthrosc, 19, pp. 3-10, (2011); Walden M., Krosshaug T., Bjorneboe J., Andersen T.E., Faul O., Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: a systematic video analysis of 39 cases, Br J Sports Med, 49, pp. 1452-1460, (2015)","H.B. Sigurðsson; Research Centre for Movement Sciences, University of Iceland, Reykjavík, Iceland; email: harbs@hi.is","","Springer Berlin Heidelberg","21971153","","","","English","J. Exp. Orthop.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85070393398" "Moreno-Pérez V.; Rodas G.; Peñaranda-Moraga M.; López-Samanes Á.; Romero-Rodríguez D.; Aagaard P.; Del Coso J.","Moreno-Pérez, Víctor (35096622700); Rodas, Gil (6602977666); Peñaranda-Moraga, Marcelo (56335769000); López-Samanes, Álvaro (55173934400); Romero-Rodríguez, Daniel (36661519100); Aagaard, Per (55043777500); Del Coso, Juan (14053970400)","35096622700; 6602977666; 56335769000; 55173934400; 36661519100; 55043777500; 14053970400","Effects of Football Training and Match-Play on Hamstring Muscle Strength and Passive Hip and Ankle Range of Motion during the Competitive Season","2022","International Journal of Environmental Research and Public Health","19","5","2897","","","","6","10.3390/ijerph19052897","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85125412550&doi=10.3390%2fijerph19052897&partnerID=40&md5=58644f8ae4fd6bf619e94fd01920dcee","Sports Research Centre, Miguel Hernandez University of Elche, Elche, 03202, Spain; Medical Department, Futbol Club Barcelona, Barcelona, 08028, Spain; Elche Football Club SAD, Elche, 03208, Spain; Faculty of Health Sciences, Universidad Francisco de Vitoria, Pozuelo de Alarcón, 28223, Spain; Sport Performance Area, Futbol Club Barcelona, Barcelona, 08028, Spain; Department of Sports Science and Clinical Biomechanics, Research Unit for Muscle Physiology and Biomechanics, University of Southern Denmark, Odense, 5230, Denmark; Centre for Sport Studies, Rey Juan Carlos University, Fuenlabrada, 28943, Spain","Moreno-Pérez V., Sports Research Centre, Miguel Hernandez University of Elche, Elche, 03202, Spain; Rodas G., Medical Department, Futbol Club Barcelona, Barcelona, 08028, Spain; Peñaranda-Moraga M., Elche Football Club SAD, Elche, 03208, Spain; López-Samanes Á., Faculty of Health Sciences, Universidad Francisco de Vitoria, Pozuelo de Alarcón, 28223, Spain; Romero-Rodríguez D., Sport Performance Area, Futbol Club Barcelona, Barcelona, 08028, Spain; Aagaard P., Department of Sports Science and Clinical Biomechanics, Research Unit for Muscle Physiology and Biomechanics, University of Southern Denmark, Odense, 5230, Denmark; Del Coso J., Centre for Sport Studies, Rey Juan Carlos University, Fuenlabrada, 28943, Spain","Deficits in hamstring muscle strength and in hip range of motion (ROM) have been considered risk factors for hamstring muscle injuries. However, there is a lack of information on how chronic exposure to regular football training affects hamstring muscle strength and hip ROM. The aim of this study was to examine the longitudinal effect of football training and competition during a complete season on hamstring muscle strength and hip ROM in football players. A total of 26 semi-professional football players underwent measurements of isometric hamstring muscle strength and passive hip flexion/extension, and internal/external hip rotation (IR/ER) ROM during the football season (pre-season, mid-season, end-season). Compared to pre-season, hamstring muscle strength increased in the dominant (+11.1%, p = 0.002) and non-dominant (+10.5%, p = 0.014) limbs in the mid-season. Compared to mid-season, hamstring strength decreased in the dominant (−9.3%, p = 0.034) limb at end-season. Compared to the pre-season, hip extension ROM decreased in mid-season in the dominant (−31.7%, p = 0.007) and non-dominant (−44.1%, p = 0.004) limbs, and further decreased at end-season (−49.0%, p = 0.006 and −68.0%, p < 0.001) for the dominant and non-dominant limbs. Interlimb asymmetry for hip IR ROM increased by 57.8% (p < 0.002) from pre-season to mid-season. In summary, while hamstring muscle strength increased during the first half of the football season in football players, a progressive reduction in hip extension ROM was observed throughout the season. The reduced hip extension ROM suggests a reduced mobility of the hip flexors, e.g., iliopsoas, produced by the continuous practice of football. Consequently, hip-specific stretching and conditioning exercises programs should be implemented during the football season. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.","Elite athlete; Fatigue; Flexibility; Muscle injury; Soccer; Team sport","Ankle; Football; Hamstring Muscles; Lower Extremity; Range of Motion, Articular; Seasons; biomechanics; injury; muscle; physiology; sport; training; adult; Article; athletic performance; elite athlete; exercise intensity; football; football player; hamstring muscle; human; joint mobility; muscle injury; muscle isometric contraction; muscle strength; observational study; prospective study; range of motion; resistance training; sporting event; training; ankle; injury; joint characteristics and functions; lower limb; physiology; season","Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: The UEFA injury study, Br. J. 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Sports Med, 46, pp. 81-85, (2012); Lee J.W.Y., Mok K.M., Chan H.C.K., Yung P.S.H., Chan K.M., Eccentric hamstring strength deficit and poor hamstring-to-quadriceps ratio are risk factors for hamstring strain injury in football: A prospective study of 146 professional players, J. Sci. Med. Sport, 21, pp. 789-793, (2018); Timmins R.G., Bourne M.N., Shield A.J., Williams M.D., Lorenzen C., Opar D.A., Short biceps femoris fascicles and eccentric knee flexor weakness increase the risk of hamstring injury in elite football (soccer): A prospective cohort study, Br. J. Sports Med, 50, pp. 1524-1535, (2016); Bradley P.S., Portas M.D., The relationship between preseason range of motion and muscle strain injury in elite soccer players, J. Strength Cond. Res, 21, pp. 1155-1159, (2007); Gabbe B.J., Bennell K.L., Finch C.F., Wajswelner H., Orchard J.W., Predictors of hamstring injury at the elite level of Australian football, Scand. J. Med. Sci. 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Sport, 29, pp. 14-18, (2018); Mujika I., Padilla S., Detraining: Loss of training induced physiological and performance adaptation. Part I. Short term insufficient training stimulus, Sports Med, 30, pp. 79-87, (2000); Moreno-Perez V., Soler A., Ansa A., Lopez-Samanes A., Madruga-Parera M., Beato M., Romero-Rodriguez D., Acute and chronic effects of competition on ankle dorsiflexion ROM in professional football players, Eur. J. Sport Sci, 20, pp. 51-60, (2020); Lopez-Valenciano A., Ayala F., Vera-Garcia F.J., de Ste Croix M., Hernandez-Sanchez S., Ruiz-Perez I., Cejudo A., Santonja F., Comprehensive profile of hip, knee and ankle ranges of motion in professional football players, J. Sports Med. Phys. Fit, 59, pp. 102-109, (2019); Seymore K.D., Domire Z.J., DeVita P., Rider P.M., Kulas A.S., The effect of Nordic hamstring strength training on muscle architecture, stiffness, and strength, Eur. J. Appl. Physiol, 117, pp. 943-953, (2017); Mizrahi J., Fatique Effect on Running Kinematics, Hum. Mov. Sci, 19, pp. 139-151, (2000); Fousekis K., Tsepis E., Vagenas G., Lower limb strength in professional soccer players: Profile, asymmetry, and training age, J. Sports Sci. Med, 9, pp. 364-373, (2010); Daneshjoo A., Rahnama N., Mokhtar A.H., Yusof A., Bilateral and unilateral asymmetries of isokinetic strength and flexibility in male young professional soccer players, J. Hum. Kinet, 36, pp. 45-53, (2013); Oshita K., Yano S., Asymmetry of Force Fluctuation During Low Intensity Isometric Contraction in Leg Muscle, Int. J. Exerc. Sci, 3, pp. 68-77, (2010); Holmich P., Uhrskou P., Ulnits L., Kanstrup I.L., Bachmann Nielsen M., Bjerg A.M., Krogsgaarda K., Effectiveness of active physical training as treatment for long-standing adductor-related groin pain in athletes: Randomised trial, Lancet, 353, pp. 439-443, (1999); Bourne M.N., Timmins R.G., Opar D.A., Pizzari T., Ruddy J.D., Sims C., Williams M.D., Shield A.J., An Evidence-Based Framework for Strengthening Exercises to Prevent Hamstring Injury, Sports Med, 48, pp. 251-267, (2018)","J. Del Coso; Centre for Sport Studies, Rey Juan Carlos University, Fuenlabrada, 28943, Spain; email: juan.delcoso@urjc.es","","MDPI","16617827","","","35270589","English","Int. J. Environ. Res. Public Health","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85125412550" "Akbari H.; Shimokochi Y.; Sheikhi B.","Akbari, Hadi (57204285239); Shimokochi, Yohei (12806432000); Sheikhi, Bahram (57220054960)","57204285239; 12806432000; 57220054960","Ankle dorsiflexion range of motion and landing postures during a soccer-specific task","2023","PLoS ONE","18","3 March","e0283150","","","","4","10.1371/journal.pone.0283150","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85150243604&doi=10.1371%2fjournal.pone.0283150&partnerID=40&md5=6a0edd4eb0f7fa246a13686279091403","Department of Sport Sciences, University of Zabol, Zabol, Iran; Department of Health and Sport Management, School of Health and Sport Sciences, Osaka University of Health and Sport Sciences, Osaka, Japan; Department of Biomechanics and Sport Injuries, Kharazmi University, Tehran, Iran","Akbari H., Department of Sport Sciences, University of Zabol, Zabol, Iran; Shimokochi Y., Department of Health and Sport Management, School of Health and Sport Sciences, Osaka University of Health and Sport Sciences, Osaka, Japan; Sheikhi B., Department of Biomechanics and Sport Injuries, Kharazmi University, Tehran, Iran","Introduction Ankle dorsiflexion range of motion (DF-ROM) has been shown to be associated with poor landing posture. However, previously used tasks have been controlled, and it is unclear whether clinical measurements of the ankle DF-ROM, are associated with landing positions during sport-specific task. This study sought to determine the relationship between ankle DF-ROM and landing positions. Methods Thirty male soccer players participated in this study. The ankle DF-ROM was measured by the weight bearing lunge test in degrees using a cell phone app (TiltMeter). Landing patterns were assessed during a soccer-specific task using landing error scoring system items using Kinovea software. Simple correlations were used to evaluate the relationships between ankle DF-ROM and landing error scores. Results Significant correlations were found between ankle DF-ROM and landing errors (r =-0.450, P = 0.006). A decreased ankle DF-ROM was associated with greater landing errors in a soccer specific situation. Conclusion These results suggest that ankle DF-ROM may serve a useful clinical measure for identifying poor landing posture in the real-world environment. Therefore, assessment of ankle DFROM could be included in the screening process, which could help identify the cause of the faulty motion. © 2023 Public Library of Science. All rights reserved.","","Ankle; Ankle Joint; Biomechanical Phenomena; Humans; Male; Posture; Range of Motion, Articular; Soccer; adolescent; adult; ankle dorsiflexion angle; Article; body mass; body position; controlled study; correlation analysis; descriptive research; human; jogging; jumping; kinematics; knee function; landing position; male; musculoskeletal system examination; range of motion; soccer; soccer player; squatting (exercise); stretching exercise; task performance; weight bearing; weight bearing lunge test; work experience; ankle; biomechanics; body position; joint characteristics and functions","Wong P, Hong Y., Soccer injury in the lower extremities, Br J Sports Med, 39, 8, pp. 473-482, (2005); Alentorn-Geli E, Mendiguchia J, Samuelsson K, Musahl V, Karlsson J, Cugat R, Et al., Prevention of non-contact anterior cruciate ligament injuries in sports. Part II: systematic review of the effectiveness of prevention programmes in male athletes, Knee Surg Sports Traumatol Arthrosc, 22, 1, pp. 16-25, (2014); Alentorn-Geli E, Myer GD, Silvers HJ, Samitier G, Romero D, Lazaro-Haro C, Et al., Prevention of noncontact anterior cruciate ligament injuries in soccer players. Part 1: Mechanisms of injury and underlying risk factors, Knee Surg Sports Traumatol Arthrosc, 17, 7, (2009); Walden M, Krosshaug T, Bjorneboe J, Andersen TE, Faul O, Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: A systematic video analysis of 39 cases, Br J Sports Med, 49, 22, pp. 1452-1460, (2015); Silvers-Granelli HJ, Bizzini M, Arundale A, Mandelbaum BR, Snyder-Mackler L., Does the FIFA 11+ Injury Prevention Program Reduce the Incidence of ACL Injury in Male Soccer Players?, Clin Orthop Relat Res, 475, 10, (2017); Shimokochi Y, Shultz SJ., Mechanisms of noncontact anterior cruciate ligament injury, Journal of athletic training, 43, 4, pp. 396-408, (2008); Boden BP, Torg JS, Knowles SB, Hewett TE., Video analysis of anterior cruciate ligament injury: Abnormalities in hip and ankle kinematics, Am J Sports Med, 37, 2, (2009); Carlson VR, Sheehan FT, Boden BP., Video Analysis of Anterior Cruciate Ligament (ACL) Injuries: A Systematic Review, JBJS Rev, 4, 11, (2016); 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Dai B, Cook RF, Meyer EA, Sciascia Y, Hinshaw TJ, Wang C, Et al., The effect of a secondary cognitive task on landing mechanics and jump performance, Sports Biomech, 17, 2, pp. 192-205, (2018); Almonroeder TG, Kernozek T, Cobb S, Slavens B, Wang J, Huddleston W., Cognitive Demands Influence Lower Extremity Mechanics During a Drop Vertical Jump Task in Female Athletes, J Orthop Sports Phys Ther, 48, 5, (2018); Ford KR, Myer GD, Smith RL, Byrnes RN, Dopirak SE, Hewett TE., Use of an overhead goal alters vertical jump performance and biomechanics, J Strength Cond Res, 19, 2, (2005); Mok KM, Bahr R, Krosshaug T., The effect of overhead target on the lower limb biomechanics during a vertical drop jump test in elite female athletes, Scand J Med Sci Sports, 27, 2, (2017); Kristianslund E, Krosshaug T., Comparison of drop jumps and sport-specific sidestep cutting: implications for anterior cruciate ligament injury risk screening, Am J Sports Med, 41, 3, (2013); Padua DA, Marshall SW, Boling MC, Thigpen CA, Garrett WE, Beutler AI., The Landing Error Scoring System (LESS) Is a valid and reliable clinical assessment tool of jump-landing biomechanics: The JUMP-ACL study, Am J Sports Med, 37, 10, (2009); Powden CJ, Hoch JM, Hoch MC., Reliability and minimal detectable change of the weight-bearing lunge test: A systematic review, Man Ther, 20, 4, pp. 524-532, (2015); Williams CM, Caserta AJ, Haines TP., The TiltMeter app is a novel and accurate measurement tool for the weight bearing lunge test, J Sci Med Sport, 16, 5, (2013); Butler RJ, Russell ME, Queen R., Effect of soccer footwear on landing mechanics, Scand J Med Sci Sports, 24, 1, pp. 129-135, (2014); Cohen J., Statistical power analysis for the behavioral sciences, (1988); Devita P, Skelly WA., Effect of landing stiffness on joint kinetics and energetics in the lower extremity, Med Sci Sports Exerc, 24, 1, pp. 108-115, (1992); Blackburn JT, Padua DA., Influence of trunk flexion on hip and knee joint kinematics during a controlled drop landing, Clin Biomech (Bristol, Avon), 23, 3, (2008); Mokhtarzadeh H, Yeow CH, Hong Goh JC, Oetomo D, Malekipour F, Lee PV., Contributions of the soleus and gastrocnemius muscles to the anterior cruciate ligament loading during single-leg landing, J Biomech, 46, 11, (2013); Hewett TE, Myer GD, Ford KR, Heidt RS, Colosimo AJ, McLean SG, Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Bahr R, Krosshaug T., Understanding injury mechanisms: A key component of preventing injuries in sport, Br J Sports Med, 39, 6, (2005); Yu B, Garrett WE., Mechanisms of non-contact ACL injuries, British journal of sports medicine, 41, (2007); Hewett TE, Ford KR, Hoogenboom BJ, Myer GD., Understanding and preventing acl injuries: current biomechanical and epidemiologic considerations-update 2010, North American journal of sports physical therapy: NAJSPT, 5, 4, (2010); Bahr R., Why screening tests to predict injury do not work-And probably never will. . .: A critical review, Br J Sports Med, 50, 13, pp. 776-780, (2016); Dai B, Herman D, Liu H, Garrett WE, Yu B., Prevention of ACL injury, part II: effects of ACL injury prevention programs on neuromuscular risk factors and injury rate, Res Sports Med, 20, 3 4, pp. 198-222, (2012); Akbari H, Sahebozamani M, Daneshjoo A, Amiri-Khorasani M, Shimokochi Y., Effect of the FIFA 11+ on Landing Patterns and Baseline Movement Errors in Elite Male Youth Soccer Players, J Sport Rehabil, 29, 6, (2020); Shultz SJ, Schmitz RJ, Benjaminse A, Collins M, Ford K, Kulas AS., ACL Research Retreat VII: An Update on Anterior Cruciate Ligament Injury Risk Factor Identification, Screening, and Prevention, J Athl Train, 50, 10, pp. 1076-1093, (2015); Quatman CE, Quatman-Yates CC, Hewett TE., A plane explanation of anterior cruciate ligament injury mechanisms: A systematic review, Sports Med, 40, 9, pp. 729-746, (2010); Rahlf AL, John C, Hamacher D, Zech A., Effects of a 10 vs. 20-Min Injury Prevention Program on Neuromuscular and Functional Performance in Adolescent Football Players, Front Physiol, 11, (2020); Hanzlikova I, Athens J, Hebert-Losier K., Factors influencing the Landing Error Scoring System: Systematic review with meta-Analysis, Journal of Science and Medicine in Sport, 24, 3, pp. 269-280, (2021)","H. Akbari; Department of Sport Sciences, University of Zabol, Zabol, Iran; email: h.akbari@uoz.ac.ir","","Public Library of Science","19326203","","POLNC","36928236","English","PLoS ONE","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85150243604" "Greig M.","Greig, Matt (23034263700)","23034263700","Concurrent changes in eccentric hamstring strength and knee joint kinematics induced by soccer-specific fatigue","2019","Physical Therapy in Sport","37","","","21","26","5","7","10.1016/j.ptsp.2019.02.003","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062228770&doi=10.1016%2fj.ptsp.2019.02.003&partnerID=40&md5=aa34b631fc633a999a2215978bcd961e","Sports Injuries Research Group, Edge Hill University, St Helens Road, Ormskirk, L39 4QP, Lancs, United Kingdom","Greig M., Sports Injuries Research Group, Edge Hill University, St Helens Road, Ormskirk, L39 4QP, Lancs, United Kingdom"," Objectives: To investigate the influence of soccer-specific fatigue on concurrent changes in knee joint kinematics and hamstring strength, given the increased risk of injury during the latter stages of match-play and the prevalence of knee joint and hamstring muscular injury. Design: Repeated measures, randomized order trials. Setting: Laboratory. Participants: Ten male professional soccer players. Main outcome measures: Reactive inversion, eversion and neutral hop tasks were completed at 15 min intervals during a soccer-specific protocol, with touchdown knee joint kinematics in the frontal and sagittal planes calculated at 200 Hz. In a separate trial, players completed maximal eccentric knee flexions at 160°·s −1 (reflecting average knee angular velocity in the functional task) at 15 min intervals, quantifying peak torque. Results: All trials were characterized by knee varus at touchdown, with ∼4° greater mal-alignment elicited over the final 15 min of the protocol (P ≤ 0.05). Peak eccentric hamstring strength was significantly (P = 0.045) reduced throughout the 2nd half. Conclusions: The coincident impairment of eccentric hamstring strength and increased knee varus at touchdown predisposes the player to injury, supporting epidemiological observations. Knee varus in these elite male players is in marked contrast to the valgus associated with ACL injury risk in female players. © 2019","Eccentric hamstring strength; Fatigue; Knee varus; Soccer","Adult; Biomechanical Phenomena; Hamstring Muscles; Humans; Knee Joint; Male; Muscle Fatigue; Muscle Strength; Random Allocation; Soccer; Young Adult; adult; Article; athlete; clinical article; controlled clinical trial; controlled study; disease predisposition; eccentric muscle contraction; elite athlete; function test; functional assessment; functional status; hamstring muscle; health hazard; human; jumping; kinematics; knee; knee function; knee injury; male; muscle fatigue; muscle injury; muscle isometric contraction; muscle strength; occupational exposure; occupational health; prevalence; priority journal; quantitative analysis; randomized controlled trial; range of motion; risk assessment; soccer; sport injury; task performance; torque; varus knee; velocity; biomechanics; hamstring muscle; knee; muscle fatigue; muscle strength; pathophysiology; physiology; randomization; soccer; young adult","Besier T.F., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Medicine & Science in Sports & Exercise, 33, pp. 1168-1175, (2001); Brouwer G.M., van Tol A.W., Bergink A.P., Belo R.M., Bernsen R.M.D., Reijman M., Et al., Association between valgus and varus alignment and the development and progression of radiographic osteoarthritis of the knee, Arthritisis and Rheumatology, 56, pp. 1204-1211, (2007); Chantraine A., Knee joint in soccer players: Osteoarthritis and axis deviation, Medicine & Science in Sports & Exercise, 17, 4, pp. 434-439, (1985); Claiborne T.L., Armstrong C.W., Gandhi V., Pincivero D.M., Relationship between hip and knee strength and knee valgus during a single leg squat, Journal of Applied Biomechanics, 22, 1, pp. 41-50, (2006); Dewig D.R., The influences of eccentric hamstring strength and stiffness on jump landing biomechanics, (2016); Drawer S., Fuller C.W., Propensity for osteoarthritis and lower limb joint pain in retired professional soccer players, British Journal of Sports Medicine, 35, pp. 402-408, (2001); Ekstrand J., Hagglund M., Kristenson K., Magnusson H., Walden M., Fewer ligament injuries but No preventive effect on muscle injuries and severe injuries: An 11-year follow-up of the UEFA champions league study, British Journal of Sports Medicine, 47, 12, pp. 732-737, (2013); Ekstrands J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: The UEFA injury study, British Journal of Sports Medicine, 45, pp. 553-558, (2011); Ekstrand J., Walden M., Hagglund M., Hamstring injuries have increased by 4% annually in men's professional football, since 2001: A 13-year longitudinal analysis of the UEFA elite club injury study, British Journal of Sports Medicine, 50, 12, pp. 731-737, (2016); Garrett W.E., The anterior cruciate ligament: The big picture, International journal of football and sports medicine: Caring for the soccer athlete worldwide, pp. 235-243, (2005); Gehring D., Melnyk M., Gollhofer A., Gender and fatigue have influence on knee joint control strategies during landing, Clinical Biomechanics, 24, 1, pp. 82-87, (2009); Greig M., The influence of soccer-specific fatigue on peak isokinetic torque production of the knee flexors and extensors, The American Journal of Sports Medicine, 36, 7, pp. 1403-1409, (2008); Greig M., The influence of soccer-specific activity on the kinematics of an agility sprint, European Journal of Sport Science, 9, 1, pp. 23-33, (2009); Greig M., McNaughton L.R., Lovell R.J., Physiological and mechanical response to soccer-specific intermittent activity and steady-state activity, Research in Sports Medicine: An International Journal, 14, 1, pp. 29-52, (2006); Hagglund M., Zwerver J., Ekstrand J., Epidemiology of patellar tendinopathy in elite male soccer players, The American Journal of Sports Medicine, 39, 9, pp. 1906-1911, (2011); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes, The American Journal of Sports Medicine, 33, 4, pp. 492-501, (2005); Kernozek T.W., Torry M.R., Iwasaki M., Gender differences in lower extremity landing mechanics caused by neuromuscular fatigue, The American Journal of Sports Medicine, 36, 3, pp. 554-565, (2008); Kuijt M.-T.K., Inklaar H., Gouttebarge V., Frings-Dresen M.H.W., Knee and ankle osteoarthritis in former elite soccer players: A systematic review of the recent literature, Journal of Science and Medicine in Sport, 15, pp. 480-487, (2012); Lewek M.D., Rudolph K.S., Snyder-Mackler L., Control of frontal plane knee laxity during gait in patients with medial compartment knee osteoarthritis, Osteoarthritis and Cartilage, 12, pp. 745-751, (2004); Messier S.P., Davis S.E., Curl W.W., Lowery R.B., Pack R.J., Etiologic factors associated with PF pain in runners, Medicine & Science in Sports & Exercise, 23, pp. 1008-1015, (1991); Small K., McNaughton L.R., Greig M., Lovell R., Soccer fatigue, sprinting and hamstring injury risk, International Journal of Sports Medicine, 30, pp. 573-578, (2009); Small K., McNaughton L., Greig M., Lovell R., The effects of multidirectional soccer-specific fatigue on markers of hamstring injury risk, Journal of Science and Medicine in Sport, 13, 1, pp. 120-125, (2010); Wild C.Y., Steele J., Munro B., Insufficient hamstring strength compromises landing technique in adolescent girls, Medicine & Science in Sports & Exercise, 45, 3, pp. 497-505, (2013); Wind W.M., Bergfeld J.A., Parker R.D., Evaluation and treatment of posterior cruciate ligament injuries revisited, The American Journal of Sports Medicine, 32, 7, pp. 1765-1775, (2004); Witvrouw E., Danneels L., Thijs Y., Cambier D., Bellemans J., Does soccer participation lead to genu varum?, Knee Surgery, Sports Traumatology, Arthroscopy, 17, pp. 422-427, (2009); Woods C., Hawkins R., Hulse M., Hodson A., The football association medical research programme: An audit of injuries in professional football: An analysis of ankle sprains, British Journal of Sports Medicine, 37, pp. 233-238, (2003); Woods C., Hawkins R.D., Maltby S., Hulse M.A., Thomas A., Hodson A., The football association medical research programme: An audit of injuries in professional football – analysis of hamstring injuries, British Journal of Sports Medicine, 38, pp. 36-41, (2004); Yu B., McClure S.B., Onate J.A., Guskiewicz K.M., Kirkendall D.T., Garrett W.E., Age and gender effects on lower extremity kinematics of youth soccer players in a stop-jump tasks, The American Journal of Sports Medicine, 33, 9, pp. 1356-1564, (2005)","M. Greig; Sports Injuries Research Group, Edge Hill University, Ormskirk, St Helens Road, L39 4QP, United Kingdom; email: matt.greig@edgehill.ac.uk","","Churchill Livingstone","1466853X","","PTSHB","30802762","English","Phys. Ther. Sport","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85062228770" "Olivares-Jabalera J.; Fílter-Ruger A.; Dos'Santos T.; Ortega-Domínguez J.; Sánchez-Martínez R.R.; Soto Hermoso V.M.; Requena B.","Olivares-Jabalera, Jesús (57219375591); Fílter-Ruger, Alberto (57211533760); Dos'Santos, Thomas (57170712800); Ortega-Domínguez, José (57734660200); Sánchez-Martínez, Rubén R. (57734660300); Soto Hermoso, Víctor M. (25960408800); Requena, Bernardo (8268059700)","57219375591; 57211533760; 57170712800; 57734660200; 57734660300; 25960408800; 8268059700","Is there association between cutting and jump-landing movement quality in semi-professional football players? Implications for ACL injury risk screening","2022","Physical Therapy in Sport","56","","","15","23","8","6","10.1016/j.ptsp.2022.05.015","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85131681818&doi=10.1016%2fj.ptsp.2022.05.015&partnerID=40&md5=55287e74a5554bd44227f4e99b9af0df","Sport and Health University Research Institute (iMUDS), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, 18071, Spain; FSI Sport Research Lab, Granada, Spain; Department of Sport and Exercise Sciences, Musculoskeletal Science and Sports Medicine Research Centre, Manchester Metropolitan University, Manchester Campus John Dalton Building, Manchester Campus, All Saints Building, Manchester, M15 6BH, United Kingdom; Club Deportivo Don Benito, Badajoz, Spain","Olivares-Jabalera J., Sport and Health University Research Institute (iMUDS), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, 18071, Spain, FSI Sport Research Lab, Granada, Spain; Fílter-Ruger A., FSI Sport Research Lab, Granada, Spain; Dos'Santos T., FSI Sport Research Lab, Granada, Spain, Department of Sport and Exercise Sciences, Musculoskeletal Science and Sports Medicine Research Centre, Manchester Metropolitan University, Manchester Campus John Dalton Building, Manchester Campus, All Saints Building, Manchester, M15 6BH, United Kingdom; Ortega-Domínguez J., Club Deportivo Don Benito, Badajoz, Spain; Sánchez-Martínez R.R., Sport and Health University Research Institute (iMUDS), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, 18071, Spain; Soto Hermoso V.M., Sport and Health University Research Institute (iMUDS), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, 18071, Spain; Requena B., Sport and Health University Research Institute (iMUDS), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, 18071, Spain, FSI Sport Research Lab, Granada, Spain","Objectives: To investigate the relationship between the Landing Error Scoring System (LESS) and Cutting Movement Assessment Score (CMAS) to evaluate movement quality, their intra- (INTRAob) and inter-observer (INTERob) reliability, and the comparison between the two drop vertical jump (DVJ) landings (1st and 2nd). Design: Cross-sectional. Participants: 42 male semi-professional soccer players performed three trials of DVJ and 70° change of direction with a ball located as an external focus. Main outcome measures: Movement quality was evaluated through 2D video footage using the CMAS and LESS, screened by two observers. Relational, comparative and reliability analyses were conducted. Results: Both tools showed moderate to substantial (ICC = 0.58–0.71), and substantial to almost perfect (ICC = 0.68–0.87) INTRAob and INTERob reliability, respectively. No significant associations were found among CMAS, LESS 1st and 2nd for either scores or risk profiles (r = −0.158–0.202, p > 0.05). LESS 2nd was moderately higher (ES = 0.80–0.83, p = 0.002–0.007) than 1st scores. Conclusions: CMAS and LESS are reliable tools to evaluate movement quality, although evaluations should be preferably performed by the same observer; ACL injury risk profile's is task-dependent; both landings of the DVJ should be assessed as they represent different biomechanical and neuromuscular control deficits. © 2022 Elsevier Ltd","Change of direction; Field assessments; Landing; Qualitative evaluation","Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Cross-Sectional Studies; Football; Humans; Male; Movement; Reproducibility of Results; Soccer; adult; anterior cruciate ligament reconstruction; Article; Berg Balance Scale; biomechanics; clinical article; field study; football player; ground reaction force; human; interrater reliability; kinematics; knee function; male; neuromuscular function; outcome assessment; physical activity; qualitative analysis; questionnaire; reliability; risk assessment; scoring system; soccer player; anterior cruciate ligament injury; cross-sectional study; football; injury; movement (physiology); reproducibility; soccer","Bahr R., Why screening tests to predict injury do not work-and probably never will.: A critical review, British Journal of Sports Medicine, 50, 13, pp. 776-780, (2016); Bates N.A., Ford K.R., Myer G.D., Hewett T.E., Impact differences in ground reaction force and center of mass between the first and second landing phases of a drop vertical jump and their implications for injury risk assessment, Journal of Biomechanics, 46, 7, pp. 1237-1241, (2013); Bates N.A., Ford K.R., Myer G.D., Hewett T.E., Kinetic and kinematic differences between first and second landings of a drop vertical jump task: Implications for injury risk assessments?, Clinical Biomechanics, 28, 4, pp. 459-466, (2013); Bates N.A., Ford K.R., Myer G.D., Hewett T.E., Timing differences in the generation of ground reaction forces between the initial and secondary landing phases of the drop vertical jump, Clinical Biomechanics, 28, 7, pp. 796-799, (2013); Baumgartner T.A., Chung H., Measurement in physical education and exercise science confidence limits for intraclass reliability coefficients. 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A systematic review and meta-analysis, Orthopaedic Journal of Sports Medicine, 8, 12, pp. 1-13, (2020); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer, Physiology of Soccer, 35, 6, pp. 501-536, (2005); Tabben M., Eirale C., Singh G., Al-Kuwari A., Ekstrand J., Chalabi H., Et al., Injury and illness epidemiology in professional Asian football: Lower general incidence and burden but higher ACL and hamstring injury burden compared with Europe, British Journal of Sports Medicine, pp. 1-6, (2020); Verhagen E., Van Dyk N., Clark N., Shrier I., Do not throw the baby out with the bathwater; Screening can identify meaningful risk factors for sports injuries, British Journal of Sports Medicine, 52, 19, pp. 1223-1224, (2018); Viera A.J., Garret J.M., Understanding interobserver agreement: The Kappa statistic, Family Medicine, 37, 5, pp. 360-363, (2005); Walden M., Hagglund M., Magnusson H., Ekstrand J., ACL injuries in men's professional football: A 15-year prospective study on time trends and return-to-play rates reveals only 65% of players still play at the top level 3 years after ACL rupture, British Journal of Sports Medicine, 50, 12, pp. 744-750, (2016); Walden M., Krosshaug T., Bjorneboe J., Andersen T.E., Faul O., Hagglund M., Three distinct mechanisms predominate in noncontact anterior cruciate ligament injuries in male professional football players: A systematic video analysis of 39 cases, British Journal of Sports Medicine, 49, 22, pp. 1452-1460, (2015); Webster K.E., Return to sport and reinjury rates in Elite female athletes after anterior cruciate ligament rupture, Sports Medicine, (2021); Whyte E.F., Kennelly P., Milton O., Richter C., O'Connor S., Moran K.A., The effects of limb dominance and a short term, high intensity exercise protocol on both landings of the vertical drop jump: Implications for the vertical drop jump as a screening tool, Sports Biomechanics, 3141, September, pp. 1-13, (2017); Zhou B., Li B., Bai L., The effect of the change of football turf on knee kinematics of adolescent male football players, Journal of Sports Medicine and Physical Fitness, 59, 12, pp. 2040-2044, (2019)","V.M. Soto Hermoso; iMUDS, University of Granada, Granada, C/Menéndez Pelayo, 32, 18016, Spain; email: vsoto@ugr.es","","Churchill Livingstone","1466853X","","PTSHB","35691245","English","Phys. Ther. Sport","Article","Final","","Scopus","2-s2.0-85131681818" "Hoenig T.; Gronwald T.; Hollander K.; Klein C.; Frosch K.-H.; Ueblacker P.; Rolvien T.","Hoenig, Tim (57203989855); Gronwald, Thomas (53363487500); Hollander, Karsten (56179346900); Klein, Christian (57193389602); Frosch, Karl-Heinz (6602307620); Ueblacker, Peter (6506302817); Rolvien, Tim (56671307900)","57203989855; 53363487500; 56179346900; 57193389602; 6602307620; 6506302817; 56671307900","Video analysis of Achilles tendon ruptures in professional male football (soccer) reveals underlying injury patterns and provides strategies for injury prevention","2023","Knee Surgery, Sports Traumatology, Arthroscopy","31","6","","2236","2245","9","5","10.1007/s00167-023-07384-1","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85151356164&doi=10.1007%2fs00167-023-07384-1&partnerID=40&md5=320576804a99bab2c4bd6bca5b4d618a","Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, Hamburg, 20251, Germany; Institute of Interdisciplinary Exercise Science and Sports Medicine, MSH Medical School Hamburg, Hamburg, Germany; Department of Sports Injury Prevention, VBG, German Statutory Accident Insurance for the Administrative Sector, Hamburg, Germany; FC Bayern München Football Club, Munich, Germany; Orthopaedics and Sports Medicine Practice, Munich, Germany","Hoenig T., Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, Hamburg, 20251, Germany; Gronwald T., Institute of Interdisciplinary Exercise Science and Sports Medicine, MSH Medical School Hamburg, Hamburg, Germany; Hollander K., Institute of Interdisciplinary Exercise Science and Sports Medicine, MSH Medical School Hamburg, Hamburg, Germany; Klein C., Department of Sports Injury Prevention, VBG, German Statutory Accident Insurance for the Administrative Sector, Hamburg, Germany; Frosch K.-H., Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, Hamburg, 20251, Germany; Ueblacker P., Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, Hamburg, 20251, Germany, FC Bayern München Football Club, Munich, Germany, Orthopaedics and Sports Medicine Practice, Munich, Germany; Rolvien T., Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, Hamburg, 20251, Germany","Purpose: In professional football (soccer), Achilles tendon ruptures are severe injuries. Video analysis promotes a better understanding of the underlying situational and biomechanical patterns, and provides a roadmap for future research to improve the management and prevention of Achilles tendon ruptures. The purpose of this study was to identify injury patterns contributing to acute Achilles tendon ruptures in professional male football players. Methods: Professional male football players with an acute Achilles tendon rupture were identified using an online database. For every in-competition injury, the corresponding football match was detected. Video footage of the injury was accessed using Wyscout.com or publicly available video databases. Situational patterns and injury biomechanics of the injury frame were independently analysed by two reviewers using a standardised checklist and a motion analysis software. Finally, consensus was reached to describe the main injury patterns of Achilles tendon ruptures in professional male football players. Results: The search identified video footage of 80 Achilles tendon ruptures in 78 players. Most injuries (94%) occurred through indirect or non-contact mechanisms. The kinematic analysis revealed characteristic joint positions at the time of injury consisting of hip extension, knee extension, ankle dorsiflexion, foot abduction, and foot pronation in most cases. The underlying direction of movement was from flexion to extension (knee) and from plantarflexion to dorsiflexion (ankle). Player actions identified as main injury patterns were stepping back (26%), landing (20%), running/sprinting (18%), jumping (13%), and starting (10%). Conclusion: Most Achilles tendon ruptures in professional male football players are closed-chain indirect or non-contact injuries. Sudden loading to the plantarflexor musculotendinous unit remains to be the main component for most cases. By achieving a better understanding of underlying injury mechanisms, this study provides new strategies for the prevention of Achilles tendon ruptures. Level of evidence: Level IV. © 2023, The Author(s).","Achilles tendon rupture; Biomechanics; Football; Injury prevention; Soccer","Achilles Tendon; Ankle Injuries; Football; Humans; Male; Rupture; Soccer; Tendon Injuries; achilles tendon; ankle injury; football; human; male; rupture; soccer; tendon injury","Arner O., Lindholm A., Subcutaneous rupture of the Achilles tendon; a study of 92 cases, Acta Chir Scand Suppl, 116, pp. 1-51, (1959); Bahr R., Clarsen B., Derman W., Dvorak J., Emery C.A., Finch C.F., Et al., International olympic committee consensus statement: methods for recording and reporting of epidemiological data on injury and illness in sport 2020 (including STROBE extension for sport injury and illness surveillance (STROBE-SIIS)), Br J Sports Med, 54, (2020); Bahr R., Krosshaug T., Bahr R., Krosshaug T., Understanding injury mechanisms: a key component of preventing injuries in sport, Br J Sports Med, 39, pp. 324-329, (2005); Bohm S., Mersmann F., Santuz A., Arampatzis A., The force–length–velocity potential of the human soleus muscle is related to the energetic cost of running, Proc Royal Soc B, 286, (2019); Cooper M.T., Acute achilles tendon ruptures: does surgery offer superior results (and other confusing issues)?, Clin Sports Med, 34, pp. 595-606, (2015); Couppe C., Svensson R.B., Silbernagel K.G., Langberg H., Magnusson S.P., Eccentric or concentric exercises for the treatment of tendinopathies?, J Orthop Sports Phys Ther, 45, pp. 853-863, (2015); De la Fuente C., Ramirez-Campillo R., Gallardo-Fuentes F., Alvarez C., Bustamante C., Henriquez H., Et al., Pattern analysis of a complete Achilles tendon rupture suffered during high jump preparation in an official national-level athletic competition, Sports Biomech, 21, pp. 312-322, (2022); Della Villa F., Buckthorpe M., Grassi A., Nabiuzzi A., Tosarelli F., Zaffagnini S., Et al., Systematic video analysis of ACL injuries in professional male football (soccer): injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, Br J Sports Med, 54, pp. 1423-1432, (2020); Diniz P., Pacheco J., Guerra-Pinto F., Pereira H., Ferreira F.C., Kerkhoffs G., Achilles tendon elongation after acute rupture: is it a problem? 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Lai A., Lichtwark G.A., Schache A.G., Lin Y.-C., Brown N.A., Pandy M.G., In vivo behavior of the human soleus muscle with increasing walking and running speeds, J Appl Physiol, 118, pp. 1266-1275, (2015); LaPrade C.M., Chona D.V., Cinque M.E., Freehill M.T., McAdams T.R., Abrams G.D., Et al., Return-to-play and performance after operative treatment of Achilles tendon rupture in elite male athletes: a scoping review, Br J Sports Med, 56, pp. 515-520, (2022); Lemme N.J., Li N.Y., DeFroda S.F., Kleiner J., Owens B.D., Epidemiology of Achilles tendon ruptures in the united states: athletic and nonathletic injuries from 2012 to 2016, Orthop J Sports Med, 6, (2018); Lemme N.J., Li N.Y., Kleiner J.E., Tan S., DeFroda S.F., Owens B.D., Epidemiology and video analysis of achilles tendon ruptures in the national basketball association, Am J Sports Med, 47, pp. 2360-2366, (2019); Leventer L., Eek F., Hofstetter S., Lames M., Injury patterns among elite football players: a media-based analysis over 6 seasons with emphasis on playing position, Int J Sports Med, 37, pp. 898-908, (2016); 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Montgomery C., Blackburn J., Withers D., Tierney G., Moran C., Simms C., Mechanisms of ACL injury in professional rugby union: a systematic video analysis of 36 cases, Br J Sports Med, 52, pp. 994-1001, (2018); Myhrvold S.B., Brouwer E.F., Andresen T.K., Rydevik K., Amundsen M., Grun W., Et al., Nonoperative or surgical treatment of acute achilles’ tendon rupture, N Engl J Med, 386, pp. 1409-1420, (2022); Niederer D., Engeroff T., Wilke J., Vogt L., Banzer W., Return to play, performance, and career duration after anterior cruciate ligament rupture: a case-control study in the five biggest football nations in Europe, Scand J Med Sci Sports, 28, pp. 2226-2233, (2018); Puig-Divi A., Escalona-Marfil C., Padulles-Riu J.M., Busquets A., Padulles-Chando X., Marcos-Ruiz D., Validity and reliability of the Kinovea program in obtaining angles and distances using coordinates in 4 perspectives, PLoS ONE, 14, (2019); Serner A., Mosler A.B., Tol J.L., Bahr R., Weir A., Mechanisms of acute adductor longus injuries in male football players: a systematic visual video analysis, Br J Sports Med, 53, pp. 158-164, (2019); Walden M., Krosshaug T., Bjorneboe J., Andersen T.E., Faul O., Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: a systematic video analysis of 39 cases, Br J Sports Med, 49, pp. 1452-1460, (2015); Zellers J.A., Carmont M.R., Gravare Silbernagel K., Return to play post-Achilles tendon rupture: a systematic review and meta-analysis of rate and measures of return to play, Br J Sports Med, 50, pp. 1325-1332, (2016)","T. Hoenig; Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Martinistraße 52, 20251, Germany; email: t.hoenig@uke.de","","Springer Science and Business Media Deutschland GmbH","09422056","","","36977780","English","Knee Surg. Sports Traumatol. Arthroscopy","Article","Final","All Open Access; Green Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85151356164" "Savoia C.; Iellamo F.; Caminiti G.; Doran D.A.; Pullinger S.; Innaurato M.R.; Annino G.; Manzi V.","Savoia, Cristian (57221099984); Iellamo, Ferdinando (7003418160); Caminiti, Giuseppe (6603746727); Doran, Dominic A. (7006779120); Pullinger, Samuel (55647688500); Innaurato, Mario R. (57224652119); Annino, Giuseppe (23388348900); Manzi, Vincenzo (23389756300)","57221099984; 7003418160; 6603746727; 7006779120; 55647688500; 57224652119; 23388348900; 23389756300","Rethinking training in elite soccer players: Comparative evidence of small-sided games and official match play in kinematic parameters","2021","Journal of Sports Medicine and Physical Fitness","61","6","","763","770","7","5","10.23736/S0022-4707.20.11400-2","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85108123961&doi=10.23736%2fS0022-4707.20.11400-2&partnerID=40&md5=9f2f5c9402b0e6689563da577d967cc8","Research institute for Sport and exercise Sciences, Tom reilly Building, liverpool John Moores university, liverpool, United Kingdom; department of clinical Sciences and Translational Medicine, Tor Vergata university, rome, Italy; IRCCS San raffaele pisana, rome, Italy; department Sports Sciences, aspire academy, doha, Qatar; institute of physical education, haute ecole de la province de liège (HEPL), liège, Belgium; department of Medicine Systems, faculty of Medicine and Surgery, Tor Vergata university, rome, Italy; dipartimento di Scienze umanistiche, università Telematica pegaso, Naples, Italy","Savoia C., Research institute for Sport and exercise Sciences, Tom reilly Building, liverpool John Moores university, liverpool, United Kingdom; Iellamo F., department of clinical Sciences and Translational Medicine, Tor Vergata university, rome, Italy, IRCCS San raffaele pisana, rome, Italy; Caminiti G., IRCCS San raffaele pisana, rome, Italy; Doran D.A., Research institute for Sport and exercise Sciences, Tom reilly Building, liverpool John Moores university, liverpool, United Kingdom; Pullinger S., Research institute for Sport and exercise Sciences, Tom reilly Building, liverpool John Moores university, liverpool, United Kingdom, department Sports Sciences, aspire academy, doha, Qatar; Innaurato M.R., institute of physical education, haute ecole de la province de liège (HEPL), liège, Belgium; Annino G., department of Medicine Systems, faculty of Medicine and Surgery, Tor Vergata university, rome, Italy; Manzi V., dipartimento di Scienze umanistiche, università Telematica pegaso, Naples, Italy","BACKGROUND: The aim of this study was to compare kinematics parameters among official matches and SSGs of an Italian premier league soccer team. METHODS: Eighteen elite professional male soccer players (4 central defenders, 4 wide defenders, 3 central midfielders, 3 box-to-box midfielders, 2 wingers and 2 strikers) took part in the study. Players were monitored during four months of full training (including preseason and in-season) and over 26 matches (14 Serie A matches, 9 Europa League matches, and 3 friendly matches), from July 2017 until November 2017. The kinematic parameters during official matches and SSGs were evaluated through video match analysis. RESULTS: The kinematic data analysis shows that the metabolic power, that constitutes an integrated measure of acceleration and velocity, fails to reflect what occurs during actual match-play. CONCLUSIONS: An increased attention should be place in planning SSGs during training to better reproduce actual match situations. © 2020 EDIZIONI MINERVA MEDICA","Athletes; Exercise; Soccer","Acceleration; Adult; Athletic Performance; Biomechanical Phenomena; Humans; Italy; Male; Prospective Studies; Running; Soccer; acceleration; adult; article; attention; data analysis; exercise; human; kinematics; male; season; soccer player; videorecording; athletic performance; biomechanics; Italy; physiology; prospective study; psychology; running; soccer","Wallace JL, Norton KI., Evolution of World Cup soccer final games 1966-2010: game structure, speed and play patterns, J Sci Med Sport, 17, pp. 223-228, (2014); Di Mascio M, Ade J, Bradley PS., The reliability, validity and sensitivity of a novel soccer-specific reactive repeated-sprint test (RRST), Eur J appl physiol, 115, pp. 2531-2542, (2015); Bangsbo J, Mohr M, Krustrup P., Physical and metabolic demands of training and match-play in the elite football player, J Sports Sci, 24, pp. 665-674, (2006); da Mota Gr, Thiengo cr, Gimenes SV, Bradley pS., The effects of ball possession status on physical and technical indicators during the 2014 fifa World cup finals, J Sports Sci, 34, pp. 493-500, (2016); osgnach c, poser S, Bernardini r, rinaldo r, di prampero pe. energy cost and metabolic power in elite soccer: a new match analysis approach, Med Sci Sports exerc, 42, pp. 170-178, (2010); ogris G, leser r, horsak B, Kornfeind p, heller M, Baca a., accuracy of the lpM tracking system considering dynamic position changes, J Sports Sci, 30, pp. 1503-1511, (2012); di Salvo V, adam c, Barry M, cardinale M., Validation of prozone®: A new video-based performance analysis system, Int J Perform Anal Sport, 6, pp. 108-119, (2006); Carling C, Bloomfield J, Nelsen L, Reilly T., The role of motion analysis in elite soccer: contemporary performance measurement techniques and work rate data, Sports Med, 38, pp. 839-862, (2008); lago-Ballesteros J, lago-penas c, rey e., The effect of playing tactics and situational variables on achieving score-box possessions in a professional soccer team, J Sports Sci, 30, pp. 1455-1461, (2012); di Salvo V, Gregson W, atkinson G, Tordoff p, drust B., analysis of high intensity activity in premier league soccer, int J Sports Med, 30, pp. 205-212, (2009); harley Ja, lovell rJ, Barnes ca, portas Md, Weston M., The interchangeability of global positioning system and semiautomated video-based performance data during elite soccer match play, J Strength Cond res, 25, pp. 2334-2336, (2011); Randers MB, Mujika I, Hewitt A, Santisteban J, Bischoff R, Solano r, Et al., Application of four different football match analysis systems: a comparative study, J Sports Sci, 28, pp. 171-182, (2010); Filetti C, Ruscello B, D'Ottavio S, Fanelli V., A study of relationships among technical, tactical, physical parameters and final outcomes in elite soccer matches as analyzed by a semiautomatic video tracking system, percept Mot Skills, 124, pp. 601-620, (2017); Mackenzie R, Cushion C., Performance analysis in football: a critical review and implications for future research, J Sports Sci, 31, pp. 639-676, (2013); little T., optimizing the use of Soccer drills for physiological development, Strength condit J, 31, (2009); Aasgaard M, Kilding AE., Does man marking influence running outputs and intensity during small-sided soccer games?, J Strength cond res, 34, pp. 3266-3274, (2020); Asian-Clemente J, Rabano-Munoz A, Munoz B, Franco J, Suarezarrones l., can small-side games provide adequate high-speed training in professional soccer?, Int J Sports Med, (2020); dalen T, Sandmael S, Stevens TG, hjelde Gh, Kjosnes TN, Wisloff U., Differences in acceleration and high-intensity activities between small-sided games and peak periods of official matches in elite soccer players, J Strength Cond Res, (2019); Castellano J, Casamichana D., Differences in the number of accelerations between small-sided games and friendly matches in soccer, J Sports Sci Med, 12, pp. 209-210, (2013); Riboli A, Coratella G, Rampichini S, Ce E, Esposito F., Area per player in small-sided games to replicate the external load and estimated physiological match demands in elite soccer players, ploS one, 15, (2020); Stojanovic E, Stojiljkovic N, Stankovic R, Scanlan AT, Dalbo VJ, Milanovic Z., Game format alters the physiological and activity demands encountered during small-sided football games in recreational players, J exerc Sci fit, 19, pp. 40-46, (2021); clemente fM., Small-sided and conditioned games in soccer training: the science and practical applications, (2016); Halouani J, Chtourou H, Gabbett T, Chaouachi A, Chamari K., Small-sided games in team sports training: a brief review, J Strength Cond Res, 28, pp. 3594-3618, (2014); Witte Th, Wilson aM., accuracy of non-differential GpS for the determination of speed over ground, J Biomech, 37, pp. 1891-1898, (2004); lames M., Validation of electronic performance and tracking systems EPTS under field conditions, PLoS One, 13, (2018); Taberner M, O'Keefe J, Flower D, Phillips J, Close G, Cohen DD, Et al., Interchangeability of position tracking technologies; can we merge the data?, Sci Med Football, 4, pp. 76-81, (2020); SpSS for Windows made simple, (1999); Bradley pS, di Mascio M, peart d, olsen p, Sheldon B., high-intensity activity profiles of elite soccer players at different performance levels, J Strength cond res, 24, pp. 2343-2351, (2010); casamichana d, castellano J, castagna c., comparing the physical demands of friendly matches and small-sided games in semiprofessional soccer players, J Strength cond res, 26, pp. 837-843, (2012); Varley MC, Aughey RJ., Acceleration profiles in elite Australian soccer, int J Sports Med, 34, pp. 34-39, (2013); Gaudino P, Iaia FM, Alberti G, Hawkins RD, Strudwick AJ, Gregson W., Systematic bias between running speed and metabolic power data in elite soccer players: influence of drill type, Int J Sports Med, 35, pp. 489-493, (2014); Sangnier S, cotte T, Brachet o, coquart J, Tourny c., planning training workload in football using small-sided games’ density, J Strength cond res, 33, pp. 2801-2811, (2019); Moreira a, Saldanha aoki M, alan rodrigues lopes r, Schultz de arruda a, lima M, Et al., Temporal changes in technical and physical performances during a small-sided game in elite youth soccer players, asian J Sports Med, 7, (2016); ferrari Bravo d, impellizzeri fM, rampinini e, castagna c, Bishop D, Wisloff U., Sprint vs. interval training in football, Int J Sports Med, 29, pp. 668-674, (2008); impellizzeri fM, Marcora SM, castagna c, reilly T, Sassi a, iaia fM, Et al., physiological and performance effects of generic versus specific aerobic training in soccer players, Int J Sports Med, 27, pp. 483-492, (2006)","V. Manzi; dipartimento di Scienze umanistiche, università Telematica pegaso, Naples, Italy; email: vimanzi@yahoo.com","","Edizioni Minerva Medica","00224707","","JMPFA","33314878","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-85108123961" "Gottfried J.M.","Gottfried, J Michael (57202134202)","57202134202","Molecular soccer balls connected to make a 2D material","2022","Nature","606","7914","","470","471","1","4","10.1038/d41586-022-01568-4","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85132172586&doi=10.1038%2fd41586-022-01568-4&partnerID=40&md5=7d0b1d5ccc12a3d83dad1567d2bbe310","","","[No abstract available]","Chemistry; Materials science; Nanoscience and technology","Athletic Performance; Biomechanical Phenomena; Soccer; athletic performance; biomechanics; soccer","","","","NLM (Medline)","14764687","","","35705816","English","Nature","Note","Final","","Scopus","2-s2.0-85132172586" "Petrovic M.; Sigurðsson H.B.; Sigurðsson H.J.; Sveinsson T.; Briem K.","Petrovic, Milos (57194231022); Sigurðsson, Haraldur B. (57526782600); Sigurðsson, Hjálmar J. (58299678400); Sveinsson, Thorarinn (55612339400); Briem, Kristín (16051954700)","57194231022; 57526782600; 58299678400; 55612339400; 16051954700","Effect of Sex on Anterior Cruciate Ligament Injury–Related Biomechanics During the Cutting Maneuver in Preadolescent Athletes","2020","Orthopaedic Journal of Sports Medicine","8","7","","","","","6","10.1177/2325967120936980","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85088384797&doi=10.1177%2f2325967120936980&partnerID=40&md5=eed20a8574a4ae69c3238aa3602f4f33","Department of Physical Therapy, Research Centre of Movement Science, University of Iceland, Reykjavik, Iceland","Petrovic M., Department of Physical Therapy, Research Centre of Movement Science, University of Iceland, Reykjavik, Iceland; Sigurðsson H.B., Department of Physical Therapy, Research Centre of Movement Science, University of Iceland, Reykjavik, Iceland; Sigurðsson H.J., Department of Physical Therapy, Research Centre of Movement Science, University of Iceland, Reykjavik, Iceland; Sveinsson T., Department of Physical Therapy, Research Centre of Movement Science, University of Iceland, Reykjavik, Iceland; Briem K., Department of Physical Therapy, Research Centre of Movement Science, University of Iceland, Reykjavik, Iceland","Background: There are 2 movement patterns associated with an anterior cruciate ligament (ACL) injury: dynamic valgus and stiff landing. Although sex-dependent differences have been identified for adults, less is known for preadolescent athletes regarding movement patterns known to load the ACL. Hypothesis: We hypothesized that girls would demonstrate greater vertical ground reaction forces and knee valgus angles. We further hypothesized that the exercise intervention would affect girls more than boys and that this would primarily be demonstrated in less sagittal plane excursions, increased vertical ground reaction forces and knee valgus moments for girls than for boys. Study Design: Controlled laboratory study. Methods: Male and female soccer and handball players (n = 288; age range, 9-12 years) were recruited. A motion capture system synchronized to a force platform was used to record 5 trials of a cutting maneuver before and after a 5-minute fatigue intervention. Linear mixed models were constructed, and analysis of variance was used to analyze differences in outcomes associated with the sex of the athletes. Results: Boys showed greater peak knee valgus moment (0.26 vs 0.22 N·m/kg, respectively; P =.048), peak knee internal rotation moment (–0.13 vs –0.10 N·m/kg, respectively; P =.021), knee rotation excursion (–7.9° vs –6.9°, respectively; P =.014), and knee extension excursion (2.7° vs 1.4°, respectively; P <.001) compared with that in girls. A significant sex × fatigue intervention interaction (F = 7.6; P =.006) was found, which was caused by a greater increase in first peak vertical ground-reaction force (vGRF) from before to after the fatigue intervention for girls (15.3 to 16.0 N/kg) compared with boys (16.4 to 16.5 N/kg). Conclusion: Differences detected for biomechanical factors during the cutting maneuver do not point to a greater ACL injury risk for prepubescent or early pubescent girls than for boys. Nonetheless, girls go on to develop more detrimental movement patterns in adolescence than those in boys in terms of biomechanical risk factors. Clinical Relevance: Early adolescence is a good target age to learn and develop muscular control; balance, strength; flexibility; and jumping, running, and landing control. This time of physical and athletic growth may therefore be an appropriate period to influence biomechanical factors and thereby task execution and the injury risk. © The Author(s) 2020.","ACL; biomechanics; cutting maneuver; injury prevention; sports medicine","anterior cruciate ligament injury; Article; athlete; biomechanics; body weight; child; cohort analysis; computer analysis; cutting maneuver; dynamic valgus cluster; dynamics; exercise; fatigue; female; ground reaction force; handball player; human; human experiment; intervention study; kinematics; knee extension excursion; knee function; knee rotation excursion; leg length; leg muscle; magnitude estimation method; male; outcome assessment; parameters; priority journal; radiography; risk factor; school child; sexual behavior; soccer player; stiff landing cluster; valgus knee","Ajuied A., Wong F., Smith C., Et al., Anterior cruciate ligament injury and radiologic progression of knee osteoarthritis: a systematic review and meta-analysis, Am J Sports Med, 42, 9, pp. 2242-2252, (2014); Ardern C.L., Webster K.E., Taylor N.F., Feller J.A., Return to sport following anterior cruciate ligament reconstruction surgery: a systematic review and meta-analysis of the state of play, Br J Sports Med, 45, 7, pp. 596-606, (2011); Arendt E.A., Agel J., Dick R., Anterior cruciate ligament injury patterns among collegiate men and women, J Athl Train, 34, 2, pp. 86-92, (1999); Barber-Westin S.D., Noyes F.R., Effect of fatigue protocols on lower limb neuromuscular function and implications for anterior cruciate ligament injury prevention training: a systematic review, Am J Sports Med, 45, 14, pp. 3388-3396, (2017); Benjaminse A., Webster K.E., Kimp A., Meijer M., Gokeler A., Revised approach to the role of fatigue in anterior cruciate ligament injury prevention: a systematic review with meta-analyses, Sports Med, 49, 4, pp. 565-586, (2019); Boden B.P., Dean G., Feagin J.J., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Bourne M.N., Webster K.E., Hewett T.E., Is fatigue a risk factor for anterior cruciate ligament rupture?, Sport Med, 49, 11, pp. 1629-1635, (2019); Briem K., Jonsdottir K.V., Arnason A., Sveinsson Th., Effects of sex and fatigue on biomechanical measures during the drop-jump task in children, Orthop J Sports Med, 5, 1, (2017); Doyle T., Schilaty N., Webster K., Hewett T.E., Time of season and game segment is not related to likelihood of lower-limb injuries: a meta-analysis, Clin J Sport Med; Fauno P., Jakobsen B.W., Mechanism of anterior cruciate ligament injuries in soccer, Int J Sports Med, 27, 1, pp. 75-79, (2006); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes: a prospective study, Am J Sports Med, 27, 6, pp. 699-706, (1999); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Hewett T.E., Myer G.D., Ford K.R., Paterno M.V., Quatman C.E., The sequence of prevention: a systematic approach to prevent anterior cruciate ligament injury knee, Clin Orthop Relat Res, 470, 10, pp. 2930-2940, (2012); Kiapour A.M., Kiapour A., Goel V.K., Et al., Uni-directional coupling between tibiofemoral frontal and axial plane rotation supports valgus collapse mechanism of ACL injury, J Biomech, 48, 10, pp. 1745-1751, (2015); Kolarz G., Kotz R., Hochmayer I., Long-term benefits and repeated treatment cycles of intra-articular sodium hyaluronate (Hyalgan) in patients with osteoarthritis of the knee, Semin Arthritis Rheum, 32, 5, pp. 310-319, (2003); Kristianslund E., Krosshaug T., Comparison of drop jumps and sport-specific sidestep cutting: implications for anterior cruciate ligament injury risk screening, Am J Sports Med, 41, 3, pp. 684-688, (2013); Krosshaug T., Nakamae A., Boden B.P., Et al., Mechanisms of anterior cruciate ligament injury in basketball: video analysis of 39 cases, Am J Sports Med, 35, 3, pp. 359-367, (2007); Leigh R.J., Pohl M.B., Ferber R., Does tester experience influence the reliability with which 3D gait kinematics are collected in healthy adults?, Phys Ther Sport, 15, 2, pp. 112-116, (2014); Leppanen M., Pasanen K., Kujala U.M., Et al., Stiff landings are associated with increased ACL injury risk in young female basketball and floorball players, Am J Sports Med, 45, 2, pp. 386-393, (2017); Markolf K., Gorek J., Kabo J., Shapiro M., Direct measurement of resultant forces in the anterior cruciate ligament: an in vitro study performed with a new experimental technique, J Bone Joint Surg Am, 72, 4, pp. 557-567, (1990); Meyer E.G., Haut R.C., Anterior cruciate ligament injury induced by internal tibial torsion or tibiofemoral compression, J Biomech, 41, 16, pp. 3377-3383, (2008); Moksnes H., Grindem H., Prevention and rehabilitation of paediatric anterior cruciate ligament injuries, Knee Surg Sports Traumatol Arthrosc, 24, 3, pp. 730-736, (2016); Myer G., Brent J.L., Ford K.R., Hewett T.E., Real-time assessment and neuromuscular training feedback techniques to prevent ACL injury in female athletes, Strength Cond J, 33, 3, pp. 21-35, (2011); Nicholls M., Aspelund T., Ingvarsson T., Briem K., Nationwide study highlights a second peak in ACL tears for women in their early forties, Knee Surg Sports Traumatol Arthrosc, 26, 2, pp. 648-654, (2018); Sankey S.P., Raja Azidin R.M.F., Robinson M.A., Et al., How reliable are knee kinematics and kinetics during side-cutting manoeuvres?, Gait Posture, 41, 4, pp. 905-911, (2015); Shaw L., Finch C.F., Trends in pediatric and adolescent anterior cruciate ligament injuries in Victoria, Australia 2005-2015, Int J Environ Res Public Health, 14, 6, pp. 1-10, (2017); Sigurdsson H.B., Sveinsson Th., Briem K., Timing, not magnitude, of force may explain sex-dependent risk of ACL injury, Knee Surg Sports Traumatol Arthrosc, 26, 8, pp. 2424-2429, (2018); Sigward S.M., Pollard C.D., Havens K., Powers C.M., The influence of sex and maturation on knee valgus moments during cutting: implications for ACL injury, Conf Proc Annu Meet Am Soc Biomech, 44, 8, pp. 122-123, (2010); Sigward S.M., Powers C.M., The influence of experience on knee mechanics during side-step cutting in females, Clin Biomech (Bristol, Avon), 21, 7, pp. 740-747, (2006); Sigward S.M., Powers C.M., The influence of sex on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clin Biomech, 21, 1, pp. 41-48, (2006); Swart E., Redler L., Fabricant P.D., Mandelbaum B.R., Ahmad C.S., Wang Y.C., Prevention and screening programs for anterior cruciate ligament injuries in young athletes: a cost-effectiveness analysis, J Bone Joint Surg Am, 96, 9, pp. 705-711, (2014); Tanikawa H., Matsumoto H., Komiyama I., Kiriyama Y., Toyama Y., Nagura T., Comparison of knee mechanics among risky athletic motions for noncontact anterior cruciate ligament injury, J Appl Biomech, 29, 6, pp. 749-755, (2013); Tranberg R., Saari T., Zugner R., Karrholm J., Simultaneous measurements of knee motion using an optical tracking system and radiostereometric analysis (RSA), Acta Orthop, 82, 2, pp. 171-176, (2011); Tsai T.Y., Lu T.W., Kuo M.Y., Lin C.C., Effects of soft tissue artifacts on the calculated kinematics and kinetics of the knee during stair-ascent, J Biomech, 44, 6, pp. 1182-1188, (2011); Walden M., Hagglund M., Werner J., Ekstrand J., The epidemiology of anterior cruciate ligament injury in football (soccer): a review of the literature from a sex-related perspective, Knee Surg Sports Traumatol Arthrosc, 19, 1, pp. 3-10, (2011)","K. Briem; Department of Physical Therapy, Research Centre of Movement Science, University of Iceland, Reykjavik, Iceland; email: kbriem@hi.is","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85088384797" "Sasadai J.; Urabe Y.; Maeda N.; Shinohara H.; Fujii E.","Sasadai, Junpei (55552049800); Urabe, Yukio (7006603067); Maeda, Noriaki (55324041300); Shinohara, Hiroshi (55552440900); Fujii, Eri (37161208600)","55552049800; 7006603067; 55324041300; 55552440900; 37161208600","The effect of ankle taping to restrict plantar flexion on ball and foot velocity during an instep kick in soccer","2015","Journal of Sport Rehabilitation","24","3","","261","267","6","7","10.1123/jsr.2014-0156","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84944218590&doi=10.1123%2fjsr.2014-0156&partnerID=40&md5=f45b88b01a03157602221872f099e811","Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan","Sasadai J., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Urabe Y., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Maeda N., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Shinohara H., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Fujii E., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan","Context: Posterior ankle impingement syndrome is a common disorder in soccer players and ballet dancers. In soccer players, it is caused by the repetitive stress of ankle plantar flexion due to instep kicking. Protective ankle dorsiflexion taping is recommended with the belief that it prevents posterior ankle impingement. However, the relationship between ankle taping and ball-kicking performance remains unclear. Objective: To demonstrate the relationship between the restrictions of ankle taping and performance of an instep kick in soccer. Design: Laboratory-based repeated-measures. Setting: University laboratory. Participants: 11 male university soccer players. Intervention: The subjects' ankle plantar flexion was limited by taping. Four angles of planter flexion (0°, 15°, 30°, and without taping) were formed by gradation limitation. The subjects performed maximal instep kicks at each angle. Main Outcome Measures: The movements of the kicking legs and the ball were captured using 3 high-speed cameras at 200 Hz. The direct linear-transformation method was used to obtain 3-dimensional coordinates using a digitizing system. Passive ankle plantar-flexion angle, maximal plantar-flexion angle at ball impact, ball velocity, and foot velocity were measured. The data were compared among 4 conditions using repeated-measures ANOVA, and the correlations between ball velocity and foot velocity and between ball velocity and toe velocity were calculated. Results: Ankle dorsiflexion taping could gradually limit both passive plantar flexion and plantar flexion at the impact. Furthermore, limitation of 0° and 15° reduced the ball velocity generated by instep kicks. Conclusion: Plantar-flexion-limiting taping at 30° has a potential to prevent posterior ankle impingement without decreasing the ball velocity generated by soccer instep kicks. © 2015 Human Kinetics, Inc.","Motion analysis; Posterior ankle impingement syndrome; Sports performance","Adult; Ankle Injuries; Ankle Joint; Athletic Tape; Biomechanical Phenomena; Foot; Humans; Male; Range of Motion, Articular; Soccer; Young Adult; adult; ankle; Ankle Injuries; athletic tape; biomechanics; foot; human; joint characteristics and functions; male; pathophysiology; physiology; soccer; young adult","Japan Football Association Profile, (2013); Giannini S., Buda R., Mosca M., Parma A., Di Caprio F., Posterior ankle impingement, Foot Ankle Int, 34, pp. 459-465, (2013); Rathur S., Clifford P.D., Chapman C.B., Posterior ankle impingement: os trigonum syndrome, Am J Orthop, 38, pp. 252-253, (2009); Robinson P., Bollen S.R., Posterior ankle impingement in professional soccer players: effectiveness of sonographically guided therapy, Am J Roentgenol, 187, pp. W53-W58, (2006); McDougall A., The os trigonum, J Bone Joint Surg Br, 37B, pp. 257-265, (1955); Calder J.D., Sexton S.A., Pearce C.J., Return to training and playing after posterior ankle arthroscopy for posterior impingement in elite professional soccer, Am J Sports Med, 38, pp. 120-124, (2010); van Dijk C.N., de Leeuw P.A., Scholten P.E., Hindfoot endoscopy for posterior ankle impingement: surgical technique, J Bone Joint Surg Am, 91, pp. 287-298, (2009); Rodano R., Tavana R., Three dimensional analysis of the instep kick in professional soccer players, Science and Football II, pp. 357-361, (1993); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med Sci Sports Exerc, 30, pp. 917-927, (1998); Lees A., Nolan L., The biomechanics of soccer: a review, J Sports Sci, 16, pp. 211-234, (1998); Wilkerson G.B., Biomechanical and neuromuscular effects of ankle taping and bracing, J Athl Train, 37, pp. 436-445, (2002); Metcalfe R.C., Schlabach G.A., Looney M.A., Renehan E.J., A comparison of moleskin tape, linen tape, and lace-up brace on joint restriction and movement performance, J Athl Train, 32, pp. 136-140, (1997); Quackenbush K.E., Barker P.R., Stone Fury S.M., Behm D.G., The effects of two adhesive ankle-taping methods on strength, power, and range of motion in female athletes, N Am J Sports Phys Ther, 3, pp. 25-32, (2008); Chapman J.P., Chapman L.J., Allen J.J., The measurement of foot preference, Neuropsychologia, 25, pp. 579-584, (1987); Krause D.A., Cloud B.A., Forster L.A., Schrank J.A., Hollman J.H., Measurement of ankle dorsiflexion: a comparison of active and passive techniques in multiple positions, J Sport Rehabil, 20, 3, pp. 333-344, (2011); Ishii H., Yanagiya T., Naito H., Katamoto S., Maruyama T., Numerical study of ball behavior in side-foot soccer kick based on impact dynamic theory, J Biomech, 42, pp. 2712-2720, (2009); Lees A., Steward I., Rahnama N., Barton G., Lower limb function in the maximal instep kick in soccer, Contemporary Sport, Leisure and Ergonomics, pp. 149-160, (2009); Tol J.L., Slim E., van Soest A.J., van Dijk C.N., The relationship of the kicking action in soccer and anterior ankle impingement syndrome, Am J Sports Med, 30, pp. 45-50, (2002); Shinkai H., Nunome H., Isokawa M., Ikegami Y., Ball impact dynamics of instep soccer kicking, Med Sci Sports Exerc, 41, pp. 889-897, (2009); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non preferred leg, J Sports Sci, 20, pp. 293-299, (2002); Forbes H., Thrussell S., Haycock N., Lohkamp M., White M., The effect of prophylactic ankle support during simulated soccer activity, J Sport Rehabil, 22, 3, pp. 170-176, (2013); Landis J.R., Koch G.G., The measurement of observer agreement for categorical data, Biometrics, 33, pp. 159-174, (1977); van Dijk C.N., Scholten P.E., Krips R., A 2-portal endoscopic approach for diagnosis and treatment of posterior ankle pathology, Arthroscopy, 16, pp. 871-876, (2000); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med Sci Sports Exerc, 34, pp. 2028-2036, (2002); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Rarick G.L., Bigley G., Karst R., Malina R.M., The measurable support of the ankle joint by conventional methods of taping, J Bone Joint Surg Am, 44A, pp. 1183-1190, (1962)","","","Human Kinetics Publishers Inc.","10566716","","JSRHE","25115347","English","J. Sport Rehabil.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84944218590" "Gonzalez-Jurado J.A.; Pérez A.M.M.; Martín F.P.","Gonzalez-Jurado, J.A. (23980085500); Pérez, Amate M.M. (55378005700); Martín, Floría P. (55440138600)","23980085500; 55378005700; 55440138600","Differences in kinematics parameters in soccer kick between male and female; [Diferencias en parámetros cinemáticos del golpeo en fútbol entre hombres y mujeres]","2012","Revista Internacional de Medicina y Ciencias de la Actividad Fisica y del Deporte","12","47","","431","443","12","6","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84867175022&partnerID=40&md5=7c993db86a68e7271f2c4c2eabc27adf","Universidad Pablo de Olavide de Sevilla, Spain; Licenciada en Ciencias de la Actividad Física y del Deporte, Delegación de Educación de Sevilla, Consejería de Educación y Ciencia, Spain","Gonzalez-Jurado J.A., Universidad Pablo de Olavide de Sevilla, Spain; Pérez A.M.M., Licenciada en Ciencias de la Actividad Física y del Deporte, Delegación de Educación de Sevilla, Consejería de Educación y Ciencia, Spain; Martín F.P., Universidad Pablo de Olavide de Sevilla, Spain","The aim was to discover if any differences between men and women's instep kick as well as their possible causes. Methods: Twenty-two expert footballers (11 male and female), aged 17-19 years participated in the study. The participants performed up to three kicks, which were filmed by a three-dimensional motion capture system. The variables analysed comprised maximum velocity (Vmáx)(m/s) and velocity at kick (Vkick) (m/s). Results: We found statistically significant differences in Vmáx. Foot: Men (16.34±2), Women (14.52±1.15). Vkick. Foot also was higher in men (16.34±2.05) than women (14.52±1.15), but the Vkick. Hip was higher in women (1.27 ± 0.31) than in men (0.94±0.33). Conclusion: There are differences in the mechanics of kicking between male and female, which cannot be associated to the use of different motor patterns, but less effective deceleration of the more proximal joints (hip and knee) in women.","Biomechanics; Kick; Soccer; Technique; Velocity","","Andersen T.B., Doerge H.C., Thomsen F.I., Collisions in soccer kicking, Sports Engineering, 2, 2, pp. 121-125, (1999); Asai T., Carre M.J., Akatsuka T., Haake S.J., The curve kick of a football I: Impact with the foot, Sports Engineering, 5, 4, pp. 183-192, (2002); Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, Journal of Sports Science & Medicine, 1, 3, pp. 72-79, (2002); Capranica L., Cama G., Fanton F., Tessitore A., Figura F., Force and power of preferred and non-preferred leg in young soccer players, Journal of Sports Medicine & Physical Fitness, 32, 4, pp. 358-363, (1992); Carre M.J., Asai T., Akatsuka T., Haake S.J., The curve kick of a football II: Flight through the air, Sports Engineering, 5, 4, pp. 193-200, (2002); Clagg S.E., Warnock A., Thomas J.S., Kinetic analyses of maximal effort soccer kicks in female collegiate athletes, Sports Biomechanics, 8, 2, pp. 141-153, (2009); Chu Y., Fleisig G.S., Simpson K.J., Andrews J.R., Biomechanical comparison between elite female and male baseball pitchers, Journal of Applied Biomechanics, 25, 1, pp. 22-31, (2009); Dorge H.C., Bull Andersen T., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, 4, pp. 293-299, (2002); Elliott B.C., Bloomfield J., Davies C.M., Development of the punt kick: A cinematographic analysis, Journal of Human Movement Studies, 6, 2, pp. 142-150, (1980); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Science & Medicine, 6, 2, pp. 154-165, (2007); Kellis E., Katis A., Vrabas I.S., Effects of an intermittent exercise fatigue protocol on biomechanics of soccer kick performance, Scandinavian Journal of Medicine & Science In Sports, 16, 5, pp. 334-344, (2006); Lees A., Biomechanics Applied to Soccer Skills, Science and soccer, pp. 123-133, (1996); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, 3, pp. 211-234, (1998); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science In Sports and Exercise, 30, 6, pp. 917-927, (1998); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science In Sports and Exercise, 34, 12, pp. 2028-2036, (2002); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, Journal of Sports Sciences, 24, 1, pp. 11-22, (2006); Putnam C.A., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Medicine and Science In Sports and Exercise, 23, 1, pp. 130-144, (1991); Shan G., Influence of gender and experience on the maximal instep soccer kick, European Journal of Sport Science, 9, 2, pp. 107-114, (2009); Shinkai H., Nunome H., Isokawa M., Ikegami Y., Ball impact dynamics of instep soccer kicking, Medicine and Science In Sports and Exercise, 41, 4, pp. 889-897, (2009); Tsaousidis N., Zatsiorsky V., Two types of ball-effector interaction and their relative contribution to soccer kicking, Human Movement Science, 15, 6, pp. 861-876, (1996); Wickstrom R.L., Developmental kinesiology: Maturation on basic motor patterns, Exercise & Sport Sciences Reviews, 3, pp. 163-192, (1975)","J. A. Gonzalez-Jurado; Universidad Pablo de Olavide de Sevilla, Spain; email: jagonjur@upo.es","","","15770354","","","","English","Revista Internacional Medicina Ciencias Actividad Fisica Deporte","Article","Final","","Scopus","2-s2.0-84867175022" "Mazuquin B.F.; Dela Bela L.F.; Pelegrinelli A.R.M.; Dias J.M.; Carregaro R.L.; Moura F.A.; Selfe J.; Richards J.; Brown L.E.; Cardoso J.R.","Mazuquin, B.F. (55811674200); Dela Bela, L.F. (55566863400); Pelegrinelli, A.R.M. (57189641074); Dias, J.M. (51664753800); Carregaro, R.L. (24340838100); Moura, F.A. (16417087000); Selfe, J. (6603035721); Richards, J. (55337584100); Brown, L.E. (7404221149); Cardoso, J.R. (12792644500)","55811674200; 55566863400; 57189641074; 51664753800; 24340838100; 16417087000; 6603035721; 55337584100; 7404221149; 12792644500","Torque-angle-velocity Relationships and Muscle Performance of Professional and Youth Soccer Players","2016","International Journal of Sports Medicine","37","12","","992","996","4","5","10.1055/s-0042-108199","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84980318129&doi=10.1055%2fs-0042-108199&partnerID=40&md5=1bfeddca6928373564860b27050b6cb4","Allied Health Research Unit, University of Central Lancashire, United Kingdom; Laboratory of Biomechanics and Clinical Epidemiology, Universidade Estadual de Londrina, Londrina, Brazil; Campus UnB Ceilândia, Universidade de Brasília (UnB), Brasília, Brazil; Physical Education and Sports Centre, Universidade Estadual de Londrina, Londrina, Brazil; Department of Kinesiology, California State University, Fullerton, United States","Mazuquin B.F., Allied Health Research Unit, University of Central Lancashire, United Kingdom; Dela Bela L.F., Laboratory of Biomechanics and Clinical Epidemiology, Universidade Estadual de Londrina, Londrina, Brazil; Pelegrinelli A.R.M., Laboratory of Biomechanics and Clinical Epidemiology, Universidade Estadual de Londrina, Londrina, Brazil; Dias J.M., Laboratory of Biomechanics and Clinical Epidemiology, Universidade Estadual de Londrina, Londrina, Brazil; Carregaro R.L., Campus UnB Ceilândia, Universidade de Brasília (UnB), Brasília, Brazil; Moura F.A., Physical Education and Sports Centre, Universidade Estadual de Londrina, Londrina, Brazil; Selfe J., Allied Health Research Unit, University of Central Lancashire, United Kingdom; Richards J., Allied Health Research Unit, University of Central Lancashire, United Kingdom; Brown L.E., Department of Kinesiology, California State University, Fullerton, United States; Cardoso J.R., Laboratory of Biomechanics and Clinical Epidemiology, Universidade Estadual de Londrina, Londrina, Brazil","Soccer matches consist of a variety of different activities, including repeated sprints. Time to attain velocity (TTAV), load range (LR) and the torque-angle-velocity relationship (TAV3D) represent an important measurement of muscle performance, however there are few related studies. The aim of this study was to compare these outcomes between soccer players of different age category. 17 professional (PRO) and 17 under-17 (U17) soccer players were assessed for concentric knee flexion/extension at 60, 120 and 300°/s. For the extensor muscles, differences were found in favor of the U17 group for TTAV and LR outcomes at 120°/s, however, the PRO group maintained higher torques in both movement directions in comparison to the U17 in TAV3D evaluation. These results suggest that muscle performance of the PRO group is more efficient than the U17 group. © Georg Thieme Verlag KGStuttgart · New York.","3D surface mapping; biomechanics; isokinetic; knee","Adolescent; Adult; Age Factors; Athletes; Athletic Performance; Humans; Knee Joint; Muscle, Skeletal; Running; Soccer; Time Factors; Torque; Young Adult; adolescent; biomechanics; extensor muscle; human; juvenile; knee function; muscle function; soccer player; torque; velocity; adult; age; athlete; athletic performance; knee; physiology; running; skeletal muscle; soccer; time factor; torque; young adult","Anderson D.E., Madigan M.L., Nussbaum M.A., Maximum voluntary joint torque as a function of joint angle and angular velocity: Model development and application to the lower limb, J Biomech, 40, pp. 3105-3113, (2007); Bangsbo J., The physiology of soccer: With special reference to intense physical exercise, Acta Physiol Scand Suppl, 619, pp. 1-155, (1994); Biodex multi-joint system, Isokinetic source book; Brown L.E., Whitehurst M., Findley B.W., Reliability of rate of velocity development and phase measures of an isokinetic device, J Strength Cond Res, 19, pp. 189-192, (2005); Brown L.E., Whitehurst M., Gilbert R., Buchalter D.N., The effect of velocity and gender on load range during knee extension and flexion exercise in an isokinetic device, J Orthop Sports Phys Ther, 21, pp. 107-112, (1995); Cabri J., De Proft E., Dufour W., Clarys J.P., The relation between muscular sthength and kick performance, (1988); Carvalho P., Cabri P., Isokinetic evaluation of the thigh muscles in soccer players, Rev Port Fisioter Desp, 1, pp. 4-13, (2007); Chollet-Tourny C., Leger H., Beuret-Blanquart F., Isokinetic knee muscles strength of soccer players according to their position, Isokinet Exerc Sci, 8, pp. 187-193, (2000); Chulani V.L., Gordon L.P., Adolescent growth and development, Prim Care, 41, pp. 465-487, (2014); Cormie P., McGuigan M.R., Newton R.U., Developing maximal neuromuscular power. Part 2 - training considerations for improving maximal power production, Sports Med, 41, pp. 125-146, (2011); Cotte T., Chatard J.C., Isokinetic strength and sprint times in English premier league football players, Biol Sport, 28, pp. 89-94, (2011); Cunha R., Carregaro R.L., Martorelli A., Vieira A., Oliveira A.B., Bottaro M., Effects of short-term isokinetic training with reciprocal knee extensors agonist and antagonist muscle actions: A controlled and randomized trial, Braz J Phys Ther, 17, pp. 137-145, (2013); Faul F., Erdfelder E., Lang A.G., Buchner A.G., G*Power 3: a flexible statistical power analysis program for the social, behavioral, and biomedical sciences, Behav Res Methods, 39, pp. 175-191, (2007); Frey-Law L.A., Laake A., Avin K.G., Heitsman J., Marler T., Abdel-Malek K., Knee and elbow 3D strength surfaces: Peak torque-angle-velocity relationships, J Appl Biomech, 28, pp. 726-737, (2012); Frisch A., Urhausen A., Seil R., Croisier J.L., Windal T., Theisen D., Association between preseason functional tests and injury in youth football: a prospective follow-up, Scand J Med Sci Sports, 21, pp. e468-e476, (2011); Harriss D.J., Atkinson G., Ethical Standards in Sport and Exercise Science Research: 2016 Update, Int J Sports Med, 36, pp. 1121-1124, (2015); Herdy C., Alkimim R., Selfe J., Pedrinelli A., Isokinetic testing of athletes Brazilian U17, U20 and professional [abstract]. 22nd International Conference on Sports Rehabilitation and Traumatology: Football Medicine Strategies for muscle and tendon injuries, (2013); Hill A.V., The heat of shortening and the dynamic constants of muscle, Proc R Soc Biol, 126, pp. 612-745, (1938); Houwelling T.W., Hamzeh M.A., Does knee joint alignment with the axis of the isokinetic dynamometer affect peak torque?, Isokinet Exerc Sci, 18, pp. 217-221, (2010); Katis A., Giannadakis E., Kannas T., Amiridis I., Kellis E., Lees A., Mechanisms that influence accuracy of soccer kick, J Electromyogr Kinesiol, 23, pp. 125-131, (2013); Kellis E., Galanis N., Kapetanos G., Natsis K., Architectural differences between the hamstring muscles, J Electromyogr Kinesiol, 22, pp. 520-526, (2012); Khalaf K.A., Parnianpour M., Karakostas T., Surface responses of maximum isokinetic ankle torque generation capability, J Appl Biomech, 16, pp. 52-59, (2000); Le Gall F.L., Laurent T., Rochcongar P., Évolution de la force musculaire des fléchisseurs et extenseurs du genou mesurée par dynamomètre isocinétique concentrique chez le footballeur de haut niveau, Sci Sport, 14, pp. 167-172, (1999); Lehance C., Binet J., Bury T., Croisier J.L., Muscular strength, functional performances and injury risk in professional and junior elite soccer players, Scand J Med Sci Sports, 19, pp. 243-251, (2009); Lin P.C., Robinson M.E., Junior J.C., O'Connor P., Detections of submaximal effort in isometric and isokinetic knee extension tests, J Orthop Sports Phys Ther, 24, pp. 19-24, (1996); Malina R.M., Cumming S.P., Kontos A.P., Eisenmann J.C., Ribeiro B., Aroso J., Maturity-associated variation in sport-specific skills of youth soccer players aged 13-15 years, J Sports Sci, 23, pp. 515-522, (2005); Newman M.A., Tarpenninc K., Marino F.E., Relationships between isokinetic knee strength, single-sprint performance, and repeated-sprint ability in football players, J Strength Cond Res, 18, pp. 867-872, (2004); Ostenberg A., Roos E., Ekdahl C., Roos H., Isokinetic knee extensor strength and functional performance in healthy female soccer players, Scand J Med Sci Sports, 8, pp. 257-264, (1998); Payne V.G., Isaacs L.D., Human motor development. A lifespan approach, (1995); Reilly T., Williams A.M., Nevill A., Franks A., A multidisciplinary approach to talent identification in soccer, J Sports Sci, 18, pp. 695-702, (2000); Schwartz F.P., Bottaro M., Celes R.C., Brown L.E., Nascimento F.O., The influence of velocity overshoot movement artefact on isokinetic knee extension tests, J Sports Sci Med, 9, pp. 140-146, (2010)","J.R. Cardoso; Physical Therapy, Universidade Estadual de Londrina, Londrina, Av. Robert Kock 60, 86038-350, Brazil; email: jeffcar@uel.br","","Georg Thieme Verlag","01724622","","IJSMD","27479459","English","Int. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84980318129" "Oliva-Lozano J.M.; Maraver E.F.; Fortes V.; Muyor J.M.","Oliva-Lozano, José M. (57213591670); Maraver, Elisa F. (57219472595); Fortes, Víctor (57216831196); Muyor, José M. (35103040000)","57213591670; 57219472595; 57216831196; 35103040000","Kinematic analysis of the postural demands in professional soccer match play using inertial measurement units","2020","Sensors (Switzerland)","20","21","5971","1","11","10","7","10.3390/s20215971","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85094111805&doi=10.3390%2fs20215971&partnerID=40&md5=903d8161b4f1ce7d556245619cd47e60","Health Research Centre, University of Almería, Almería, 04120, Spain; Faculty of Computer Science, Multimedia and Telecommunications, Universitat Oberta de Catalunya, Barcelona, 08018, Spain; Unión Deportiva Almería, Almería, 04007, Spain; Laboratory of Kinesiology, Biomechanics and Ergonomics (KIBIOMER Lab.), Research Central Services, University of Almería, Almería, 04120, Spain","Oliva-Lozano J.M., Health Research Centre, University of Almería, Almería, 04120, Spain; Maraver E.F., Faculty of Computer Science, Multimedia and Telecommunications, Universitat Oberta de Catalunya, Barcelona, 08018, Spain; Fortes V., Unión Deportiva Almería, Almería, 04007, Spain; Muyor J.M., Health Research Centre, University of Almería, Almería, 04120, Spain, Laboratory of Kinesiology, Biomechanics and Ergonomics (KIBIOMER Lab.), Research Central Services, University of Almería, Almería, 04120, Spain","The development of wearable sensors has allowed the analysis of trunk kinematics in match play, which is necessary for a better understanding of the postural demands of the players. The aims of this study were to analyze the postural demands of professional soccer players by playing position. A longitudinal study for 13 consecutive microcycles, which included one match per microcycle, was conducted. Wearable sensors with inertial measurement units were used to collect the percentage (%) of playing time spent and G-forces experienced in different trunk inclinations and the inclination required for different speeds thresholds. The inclination zone had a significant effect on the time percentage spent on each zone (p < 0.001, partial eta-squared (ηp2 = 0.85) and the G-forces experienced by the players (p < 0.001, ηp2 = 0.24). Additionally, a significant effect of the speed variable on the trunk inclination zones was found, since trunk flexion increased with greater speeds (p < 0.001; ηp2 = 0.73), except for midfielders. The players spent most of the time in trunk flexion between 20◦ and 40◦; the greatest G-forces were observed in trunk extension zones between 0◦ and 30◦, and a linear relationship between trunk inclination and speed was found. This study presents a new approach for the analysis of players’ performance. Given the large volumes of trunk flexion and the interaction of playing position, coaches are recommended to incorporate position-specific training drills aimed to properly prepare the players for the perception-action demands (i.e., visual exploration and decision-making) of the match, as well as trunk strength exercises and other compensatory strategies before and after the match. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.","Football demands; Game analysis; Load management; Running posture; Team sports; Tracking systems","Athletic Performance; Biomechanical Phenomena; Geographic Information Systems; Humans; Longitudinal Studies; Posture; Running; Soccer; Torso; Decision making; Football; Kinematics; Compensatory strategy; Inertial measurement unit; Kinematic Analysis; Linear relationships; Longitudinal study; Perception-action; Trunk inclination; Visual exploration; athletic performance; biomechanics; body position; geographic information system; human; longitudinal study; physiology; running; soccer; trunk; Wearable sensors","Vanttinen T., Blomqvist M., Hakkinen K., Development of Body Composition, Hormone Profile, Physical Fitness, General Perceptual Motor Skills, Soccer Skills and On-The-Ball Performance in Soccer-Specific Laboratory Test Among Adolescent Soccer Players, J. Sports Sci. 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Am, 27, pp. 217-236, (2016); Teng H.-L., Powers C.M., Influence of Trunk Posture on Lower Extremity Energetics During Running, Med. Sci. Sports Exerc, 47, pp. 625-630, (2014); Schuermans J., Van Tiggelen D., Palmans T., Danneels L., Witvrouw E., Deviating running kinematics and hamstring injury susceptibility in male soccer players: Cause or consequence?, Gait Posture, 57, pp. 270-277, (2017); Teng H.-L., Powers C.M., Sagittal Plane Trunk Posture Influences Patellofemoral Joint Stress During Running, J. Orthop. Sports Phys. Ther, 44, pp. 785-792, (2014); Grosdent S., Demoulin C., de La Cruz C.R., Giop R., Tomasella M., Crielaard J.-M., Vanderthommen M., Lumbopelvic motor control and low back pain in elite soccer players: A cross-sectional study, J. Sports Sci, 34, pp. 1021-1029, (2016); Oliva-Lozano J.M., Rojas-Valverde D., Gomez-Carmona C.D., Fortes V., Pino-Ortega J., Impact of contextual variables on the representative external load profile of Spanish professional soccer match-play: A full season study, Eur. J. Sport Sci, pp. 1-10, (2020); Oliva-Lozano J.M., Fortes V., Muyor J.M., The first, second, and third most demanding passages of play in professional soccer: a longitudinal study, Biol. Sport, 38, pp. 165-174, (2020); Granero-Gil P., Gomez-Carmona C.D., Bastida-Castillo A., Rojas-Valverde D., de la Cruz E., Pino-Ortega J., Influence of playing position and laterality in centripetal force and changes of direction in elite soccer players, PLoS ONE, 15, (2020); Riboli A., Semeria M., Coratella G., Esposito F., Effect of formation, ball in play and ball possession on peak demands in elite soccer, Biol. Sport, 38, pp. 195-205, (2021); Simoni L., Pancani S., Vannetti F., Macchi C., Pasquini G., Relationship between Lower Limb Kinematics and Upper Trunk Acceleration in Recreational Runners, J. Healthc. Eng, 20, pp. 1-7, (2020); Lindsay T.R., Yaggie J.A., McGregor S.J., Contributions of lower extremity kinematics to trunk accelerations during moderate treadmill running, J. Neuroeng. Rehabil, 11, (2014); Oliva-Lozano J.M., Maraver E.F., Fortes V., Muyor J.M., Effect of Playing Position, Match Half, and Match Day on the Trunk Inclination, G-Forces, and Locomotor Efficiency Experienced by Elite Soccer Players in Match Play, Sensors, 20, (2020); Gomez-Carmona C.D., Bastida-Castillo A., Ibanez S.J., Pino-Ortega J., Accelerometry as a method for external workload monitoring in invasion team sports. A systematic review, PLoS ONE, 15, (2020); Oliva-Lozano J.M., Martin-Fuentes I., Muyor J.M., Validity and Reliability of a New Inertial Device for Monitoring Range of Motion at the Pelvis During Sexual Intercourse, Int. J. Environ. Res. Public Health, 17, (2020); Poitras I., Dupuis F., Bielmann M., Campeau-Lecours A., Mercier C., Bouyer L., Roy J.-S., Validity and Reliability of Wearable Sensors for Joint Angle Estimation: A Systematic Review, Sensors, 19, (2019); Warman G.E., Chalkley D., Cole M.H., Pepping G.-J., Utilising GPS Data to Quantify Torso Range of Motion in Field Hockey Athletes, Proceedings, 2, (2018); Harriss D., Atkinson G., Ethical Standards in Sport and Exercise Science Research: 2016 Update, Int. J. Sports Med, 36, pp. 1121-1124, (2015); Oliva-Lozano J.M., Gomez-Carmona C.D., Pino-Ortega J., Moreno-Perez V., Rodriguez-Perez M.A., Match and Training High Intensity Activity-Demands Profile during a Competitive Mesocycle in Youth Elite Soccer Players, J. Hum. Kinet, 75, pp. 131-141, (2020); Oliva-Lozano J.M., Rojas-Valverde D., Gomez-Carmona C.D., Fortes V., Pino-Ortega J., Worst case scenario match analysis and contextual variables in professional soccer players: A longitudinal study, Biol. Sport, 37, pp. 429-436, (2020); Gomez-Carmona C.D., Bastida-Castillo A., Garcia-Rubio J., Ibanez S.J., Pino-Ortega J., Static and dynamic reliability of WIMU PROTM accelerometers according to anatomical placement, Proc. Inst. Mech. Eng. Part P J. Sport. Eng. Technol, 233, pp. 238-248, (2019); Bastida-Castillo A., Gomez-Carmona C.D., De la Cruz Sanchez E., Pino-Ortega J., Accuracy, intra-and inter-unit reliability, and comparison between GPS and UWB-based position-tracking systems used for time–motion analyses in soccer, Eur. J. Sport Sci, 18, pp. 450-457, (2018); Ade J., Fitzpatrick J., Bradley P.S., High-intensity efforts in elite soccer matches and associated movement patterns, technical skills and tactical actions. Information for position-specific training drills, J. Sports Sci, 34, pp. 2205-2214, (2016); Oliva-Lozano J.M., Muyor J.M., Core Muscle Activity during Physical Fitness Exercises: A Systematic Review, Int. J. Environ. Res. Public Health, 17, (2020); Muller R., Ertelt T., Blickhan R., Low back pain affects trunk as well as lower limb movements during walking and running, J. Biomech, 48, pp. 1009-1014, (2015); Hides J.A., Oostenbroek T., Franettovich Smith M.M., Mendis M.D., The effect of low back pain on trunk muscle size/function and hip strength in elite football (soccer) players, J. Sports Sci, 34, pp. 2303-2311, (2016); Russell M., Sparkes W., Northeast J., Cook C.J., Love T.D., Bracken R.M., Kilduff L.P., Changes in Acceleration and Deceleration Capacity throughout Professional Soccer Match-Play, J. Strength Cond. Res, 30, pp. 2839-2844, (2016); Saunders S.W., Schache A., Rath D., Hodges P.W., Changes in three dimensional lumbo-pelvic kinematics and trunk muscle activity with speed and mode of locomotion, Clin. Biomech, 20, pp. 784-793, (2005); Clemente F.M., Martins F.M.L., Wong P.D., Kalamaras D., Mendes R.S., Midfielder as the prominent participant in the building attack: A network analysis of national teams in FIFA World Cup 2014, Int. J. Perform. Anal. Sport, 15, pp. 704-722, (2015); Jeffreys I., Movement Training for Field Sports: Soccer, Strength Cond. J, 30, pp. 19-27, (2008); Kos M., Kramberger I., A Wearable Device and System for Movement and Biometric Data Acquisition for Sports Applications, IEEE Access, 5, pp. 6411-6420, (2017); Rojas-Valverde D., Gomez-Carmona C.D., Gutierrez-Vargas R., Pino-Ortega J., From big data mining to technical sport reports: the case of inertial measurement units, BMJ Open Sport Exerc. Med, 5, (2019); Fasel B., Sporri J., Chardonnens J., Kroll J., Muller E., Aminian K., Joint Inertial Sensor Orientation Drift Reduction for Highly Dynamic Movements, IEEE J. Biomed. Health Inform, 22, pp. 77-86, (2017); Fong D.T.-P., Chan Y.-Y., The Use of Wearable Inertial Motion Sensors in Human Lower Limb Biomechanics Studies: A Systematic Review, Sensors, 10, pp. 11556-11565, (2010); Guiry J., van de Ven P., Nelson J., Multi-Sensor Fusion for Enhanced Contextual Awareness of Everyday Activities with Ubiquitous Devices, Sensors, 14, pp. 5687-5701, (2014); Liu L., Qiu S., Wang Z., Li J., Wang J., Canoeing Motion Tracking and Analysis via Multi-Sensors Fusion, Sensors, 20, (2020); Gandolla M., Ferrante S., Costa A., Bortolotti D., Sorti S., Vitale F., Bocciolone M., Braghin F., Masiero S., Pedrocchi A., Wearable Biofeedback Suit to Promote and Monitor Aquatic Exercises: A Feasibility Study, IEEE Trans. Instrum. Meas, 69, pp. 1219-1231, (2020); Medina D., Pons E., Gomez A., Guitart M., Martin A., Vazquez-Guerrero J., Camenforte I., Carles B., Font R., Are There Potential Safety Problems Concerning the Use of Electronic Performance-Tracking Systems? The Experience of a Multisport Elite Club, Int. J. Sports Physiol. Perform, 12, pp. 1115-1118, (2017)","J.M. Oliva-Lozano; Health Research Centre, University of Almería, Almería, 04120, Spain; email: jol908@ual.es","","MDPI AG","14248220","","","33105576","English","Sensors","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85094111805" "Wannop J.W.; Killick A.; Madden R.; Stefanyshyn D.J.","Wannop, John William (36105346700); Killick, Anthony (57073630200); Madden, Ryan (55327223500); Stefanyshyn, Darren J. (6701771084)","36105346700; 57073630200; 55327223500; 6701771084","The influence of gearing footwear on running biomechanics","2017","Footwear Science","9","2","","111","119","8","7","10.1080/19424280.2017.1342705","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85023606961&doi=10.1080%2f19424280.2017.1342705&partnerID=40&md5=db2f982b87413eac7e715d4a7a8c0b6d","Human Performance Lab, Faculty of Kinesiology, University of Calgary, Calgary, Canada","Wannop J.W., Human Performance Lab, Faculty of Kinesiology, University of Calgary, Calgary, Canada; Killick A., Human Performance Lab, Faculty of Kinesiology, University of Calgary, Calgary, Canada; Madden R., Human Performance Lab, Faculty of Kinesiology, University of Calgary, Calgary, Canada; Stefanyshyn D.J., Human Performance Lab, Faculty of Kinesiology, University of Calgary, Calgary, Canada","The influence of nonlinear bending stiffness footwear, which alters the metatarsophalangeal (MTP) joint bending as a function of forefoot bending stiffness, has been postulated to improve athletic performance and reduce injury risk during many sports. As the shoe moves through greater amounts of bending, forefoot stiffness should increase nonlinearly, to shift the centre of pressure forward (improving performance), while restricting forefoot bending in regions where turf toe injury may result. Recently, materials which allow for stiffness modifications as a function of forefoot flexion angle have been developed; however, the efficacy of this technology is unknown. Therefore, the purpose of this project was to evaluate the influence of gearing technology (a variable bending stiffness shoe) on biomechanics during running and sprinting. Ten male recreational athletes performed running and sprinting in two footwear conditions consisting of an altered US 10 adidas 16.4 FXG cleat. The footwear was altered by placing carbon fibre insoles with variable (nonlinear stiffness) into the shoes creating two different conditions: Control (no insole) and the variable stiffness (varStiff) shoe (gearing insoles). Kinematic (joint angles) and kinetic (ground reaction force and 3D joint moments) data of the lower extremity were recorded during each movement. The results of the study indicate that the variable stiffness insoles did positively influence athlete lower extremity biomechanics. At the MTP joint, as running speed increased (and normal MTP bending range of motion increased), the variable stiffness insoles reduced the amount of MTP bending of the shoes and reduced the medial–lateral movement of the point of force application. Additionally, the variable stiffness insoles reduced key biomechanical injury risk variables, such as non-sagittal plane joint loading at the knee and ankle joint. © 2017 Informa UK Limited, trading as Taylor & Francis Group.","bending; forefoot; gearing; longitudinal; soccer; stiffness","Bending (forming); Biophysics; Football; Gait analysis; Gears; Graphite fibers; Joints (anatomy); Machinery; Stiffness; Wheels; Athletic performance; Biomechanical injury; forefoot; Ground reaction forces; Improving performance; longitudinal; Non-linear stiffness; Nonlinear bending stiffness; Sports","Clanton T.O., Ford J.J., Turf toe injury, Clinics in Sports Medicine, 13, 4, pp. 731-741, (1994); Coker T.P., Arnold J.A., Weber D.L., Traumatic lesions of the metatarsophalangeal joint of the great toe in athletes, The American Journal of Sports Medicine, 6, 6, pp. 326-334, (1977); Enders H., Vienneau J., Tomaras E.K., Koerger H., Nigg S., Nigg B., Soccer shoe bending stiffness significantly alters game-specific physiology in a 25-minute continuous field-based protocol, Footwear Science, 8, 2, pp. 83-90, (2016); Ford K., Taylor J., Baellow A., Arpante A., Wright K., Nguyen A., Effects of plate stiffness on first metatarsophalangeal joint motion during unanticipated cutting and resisted sled pushing in football players, Footwear Science, 8, 2, pp. 75-82, (2016); Frimenko R.E., Lievers W.B., Riley P.O., Park J.S., Hogan M.V., Crandall J.R., Kent R.W., Development of an injury risk function for first metatarsophalangeal joint sprains, Medicine & Science in Sports & Exercise, 45, 11, pp. 2144-2150, (2013); Gissane C., Jennings D., White J., Cumine A., Injury in summer rugby league football: The experiences of one club, British Journal of Sports Medicine, 32, 2, pp. 149-152, (1998); Hewett T., Myer G., Ford K., Heidt R., Colosimo A., McLean S., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, American Journal of Sports Medicine, 33, 4, pp. 492-501, (2005); Hockenbury R.T., Forefoot problems in athletes, Medicine & Science in Sports & Exercise, 31, pp. S448-S458, (1999); Hurwitz D., Sumner D., Andriacchi T., Sugar D., Dynamic knee loads during gait predict proximal tibial bone distribution, Journal of Biomechanics, 31, 5, pp. 423-430, (1998); Krell J., The influence of the metatarsophalangeal joint in determining sprint running, Unpublished master's thesis, (2002); Lessley D.J., Crandall J., Frederick E.C., Kent R., Sherwood C., Quantifying the forefoot bending stiffness of cleated American football shoes using the Football American Shoe Tester (FAST), Footwear Science, 8, 2, pp. 65-74, (2016); Luo G., Stergiou P., Worobets J., Nigg B., Stefanyshyn D., Improved footwear comfort reduces oxygen consumption during running, Footwear Science, 1, 1, pp. 25-29, (2009); Manning M.R., Levy R.S., Soccer, Physical Medicine and Rehabilitation Clinics of North America, 17, 3, pp. 677-695, (2006); McCormick J.J., Anderson R.B., The great toe: Failed turf toe, chronic turf toe, and complicated sesamoid injuries, Foot and Ankle Clinics, 14, 2, pp. 135-150, (2009); Miller J.E., Nigg B.M., Liu W., Stefanyshyn D.J., Nurse M.A., Influence of foot, leg and shoe characteristics on subjective comfort, Foot & Ankle International, 21, 9, pp. 759-767, (2000); Roy J., Stefanyshyn D., Shoe midsole longitudinal bending stiffness and running economy, joint energy, and EMG, Medicine & Science in Sports & Exercise, 38, 3, pp. 562-569, (2006); Sharma L., Hurwitz D., Thonar E., Sum J., Lenz M., Dunlop D., Knee adduction moment, serum hyaluronan level, and disease severity in medial tibiofemoral osteoarthritis, Arthritis & Rheumatism, 41, 7, pp. 1233-1240, (1998); Shin C., Chaudhari A., Andriacchi T., The effect of isolated valgus moments on ACL strain during single-leg landing: A simulation study, Journal of Biomechanics, 42, 3, pp. 280-285, (2009); Stefanyshyn D.J., Fusco C., Athletics: Increased shoe bending stiffness increases sprint performance, Sports Biomechanics, 3, 1, pp. 55-66, (2004); Stefanyshyn D., Stergiou P., Lun V., Meeuwisse W., Worobets J., Knee angular impulse as a predictor of patellofemoral pain in runners, American Journal of Sports Medicine, 34, pp. 1844-1851, (2006); Stefanyshyn D.J., Nigg B.M., Influence of midsole bending stiffness on joint energy and jump height performance, Medicine & Science in Sports & Exercise, 32, pp. 471-476, (2000); Stefanyshyn D.J., Wannop J.W., The influence of forefoot bending stiffness of footwear on athletic injury and performance, Footwear Science, 8, 2, pp. 51-63, (2016); Thorp L., Wimmer M., Block J., Moisio K., Shott S., Goker B., Sumner D., Bone mineral density in the proximal tibia varies as a function of static alignment and knee adduction angular momentum in individuals with medial knee osteoarthritis, Bone, 39, 5, pp. 1116-1122, (2006); Tinoco N., Bourgit D., Morin J.B., Influence of midsole metatarsophalangeal stiffness on jumping and cutting movement abilities, Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 224, pp. 209-217, (2010); Willwacher S., Konig M., Braunstein B., Goldmann J.P., Bruggemann G.P., The gearing function of running shoe longitudinal bending stiffness, Gait & Posture, 40, 3, pp. 386-390, (2014); Willwacher S., Konig M., Potthast W., Bruggemann G.P., Does specific footwear facilitate energy storage and return at the metatarsophalangeal joint in running, Journal of Applied Biomechanics, 29, 5, pp. 583-592, (2013); Willwacher S., Kurz M., Menne C., Schrodter E., Bruggemann G.P., Biomechanical response to altered footwear longitudinal bending stiffness in the early acceleration phase of sprinting, Footwear Science, 8, 2, pp. 99-108, (2016)","J.W. Wannop; Human Performance Lab, Faculty of Kinesiology, University of Calgary, Calgary, Canada; email: bwannop@kin.ucalgary.ca","","Taylor and Francis Ltd.","19424280","","","","English","Footwear Sci.","Article","Final","","Scopus","2-s2.0-85023606961" "Louder T.J.; Bressel E.; Nardoni C.; Dolny D.G.","Louder, Talin J (56037608100); Bressel, Eadric (6603039075); Nardoni, Clint (57205167874); Dolny, Dennis G (6603351771)","56037608100; 6603039075; 57205167874; 6603351771","Biomechanical Comparison of Loaded Countermovement Jumps Performed on Land and in Water","2019","Journal of Strength and Conditioning Research","33","1","","25","35","10","7","10.1519/JSC.0000000000001900","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85049628934&doi=10.1519%2fJSC.0000000000001900&partnerID=40&md5=6dca984998f764566c41cf7b56910e43","Department of Kinesiology and Health Science, Utah State University, Logan, UT, United States; Sport Performance Research Institute, Auckland University of Technology, Auckland, New Zealand","Louder T.J., Department of Kinesiology and Health Science, Utah State University, Logan, UT, United States; Bressel E., Department of Kinesiology and Health Science, Utah State University, Logan, UT, United States, Sport Performance Research Institute, Auckland University of Technology, Auckland, New Zealand; Nardoni C., Department of Kinesiology and Health Science, Utah State University, Logan, UT, United States; Dolny D.G., Department of Kinesiology and Health Science, Utah State University, Logan, UT, United States","Louder, T, Bressel, E, Nardoni, C, and Dolny, D. Biomechanical comparison of loaded countermovement jumps performed on land and in water. J Strength Cond Res 33(1): 25-35, 2019 - Researchers have observed physical improvements after the completion of aquatic-based jump training. However, there is a lack of research on the biomechanical specificity of aquatic-based movement. Therefore, the purpose of this investigation was to evaluate the kinetics and kinematics of loaded countermovement jumps performed in water versus land. Twenty young men and 24 National Collegiate Athletic Association (NCAA) Division I female soccer and gymnastics athletes were asked to perform unloaded and loaded countermovement jumps on land and in chest-deep water immersion. A triaxial force platform and 2-dimensional videography produced various kinetic and kinematic measures of jump performance. Peak and mean mechanical power outputs (W) were 88% (8,919 ± 3,744 vs. 4,734 ± 1,418 W; p < 0.001) and 81% (3,640 ± 1,807 vs. 2,011 ± 736 W; p < 0.001) greater for jumps performed in water vs. land. Peak dorsiflexion velocity was 688% faster (44 ± 39 vs. 5.6 ± 5.4 degree·s-1; p < 0.001) for jumps performed in water and tended to model similarly with measures of mechanical power and amortization rate. Body weight normalized peak and mean mechanical power outputs decreased by 23.6 ± 2.7 and 23.8 ± 1.9% when load was added in the water. The addition of load on land was associated with an 8.7 ± 2.3 and 10.5 ± 4.4% decrease in body weight normalized peak and mean mechanical power. Results suggest that the aquatic environment alters movement primarily at amortization and may provide a unique training stimulus. Also, it can be concluded that fluid resistance and buoyancy combine to influence the mechanics of jumping movements performed in the water. © 2018 National Strength and Conditioning Association.","aquatic; biomechanics; exercise; jumping; plyometric; rehabilitation","Adolescent; Adult; Athletes; Athletic Performance; Biomechanical Phenomena; Body Weight; Cross-Sectional Studies; Female; Gymnastics; Humans; Male; Muscle Strength; Plyometric Exercise; Soccer; Water; Young Adult; water; adolescent; adult; athlete; athletic performance; biomechanics; body weight; cross-sectional study; female; human; male; muscle strength; physical education; plyometrics; soccer; young adult","Arazi H., Coetzee B., Asadi A., Comparative effect of land and aquatic based plyometric training on the jumping ability and agility of young basketball players, S Afr J Res Sport Ph, 34, pp. 1-14, (2012); Arazi H., Eston R., Asadi A., Roozbeh B., Saati Zarei A., Type of ground surface during plyometric training affects the severity of exercise-induced muscle damage, Sports, 4, (2016); Atanaskovic A., Georgiev M., Mutavdzic V., The impact of plyometrics and aqua plyometrics on the lower extremities explosive strength in children aged 11-15, Res Kinesiol, 43, pp. 111-114, (2015); Barker A.L., Talevski J., Morello R.T., Brand C.A., Rahmann A.E., Urquhart D.M., Effectiveness of aquatic exercise for musculoskeletal conditions: A meta-analysis, Arch Phys Med Rehabil, 95, pp. 1776-1786, (2014); Bell D.R., Sanfilippo J.L., Binkley N., Heiderscheit B.C., Lean mass asymmetry influences force and power asymmetry during jumping in collegiate athletes, J Strength Cond Res, 28, pp. 884-891, (2014); Bento P.C.B., Pereira G., Ugrinowitsch C., Rodacki A.L., The effects of a water-based exercise program on strength and functionality of older adults, J Aging Phys Act, 20, pp. 469-483, (2012); Bressel E., Wing J., Miller A., Dolny D., High-intensity interval training on an aquatic treadmill in adults with osteoarthritis: Effect on pain, balance, function, and mobility, J Strength Cond Res, 28, pp. 2088-2096, (2014); Clark M.A., Lucett S., Corn R.J., Plyometric (reactive) training concepts, NASM Essentials of Personal Fitness Training, pp. 254-255, (2008); Colado J.C., Tella V., Triplett N.T., Gonzalez L.M., Effects of a short-term aquatic resistance program on strength and body composition in fit young men, J Strength Cond Res, 23, pp. 549-559, (2009); Dell'Antonio E., Ruschel C., De Brito Fontana H., Haupenthal A., Pereira S.M., Roesler H., Effect of immersion on ground reaction force and contact time during drop jump exercise, J Strength Cond Res, 30, pp. 3443-3449, (2016); Donoghue O.A., Shimojo H., Takagi H., Impact forces of plyometric exercises performed on land and in water, Sports Health, 3, pp. 303-309, (2011); Douris P., Southard V., Varga C., Schauss W., Gennaro C., Reiss A., The effect of land and aquatic exercise on balance scores in older adults, J Geriatr Phys Ther, 26, pp. 3-6, (2003); Driss T., Driss T., Vandewalle H., Quievre J., Miller C., Monod H., Effects of external loading on power output in a squat jump on a force platform: A comparison between strength and power athletes and sedentary individuals, J Sports Sci, 19, pp. 99-105, (2001); Irandoust K., Taheri M., The effects of aquatic exercise on body composition and nonspecific low back pain in elderly males, J Phys Ther Sci, 27, pp. 433-435, (2015); Kieffer H.S., Lehman M.A., Veacock D., Korkuch L., The effects of a short-term novel aquatic exercise program on functional strength and performance of older adults, Int J Exerc Sci, 5, pp. 321-333, (2011); Kobak M.S., Rebold M.J., DeSalvo R., Otterstetter R., A comparison of aquatic vs. Land-based plyometrics on various performance variables, Int J Exerc Sci, 8, (2015); Laffaye G., Wagner P.P., Tombleson T.I., Countermovement jump height: Gender and sport-specific differences in the force-time variables, J Strength Cond Res, 28, pp. 1096-1105, (2014); Louder T., Bressel E., Baldwin M., Dolny D.G., Gordin R., Miller A., Effect of aquatic immersion on static balance, IJARE, 8, pp. 53-65, (2014); Louder T.J., Searle C.J., Bressel E., Mechanical parameters and flight phase characteristics in aquatic plyometric jumping, Sports Biomech, 15, pp. 342-356, (2016); Maher C.G., Sherrington C., Herbert R.D., Moseley A.M., Elkins M., Reliability of the PEDro scale for rating quality of randomized controlled trials, Phys Ther, 83, pp. 713-721, (2003); Markovic S., Mirkov D.M., Nedeljkovic A., Jaric S., Body size and countermovement depth confound relationship between muscle power output and jumping performance, Hum Mov Sci, 33, pp. 203-210, (2014); Marsico M.F., Malyszek K.K., Bagley J.R., Galpin A.J., A supplemental aquatic speed training program for NFL combine preparation, Strength Cond J, 37, pp. 58-64, (2015); McBride J.M., Skinner J.W., Schafer P.C., Haines T.L., Kirby T.J., Comparison of kinetic variables and muscle activity during a squat vs. a box squat, J Strength Cond Res, 24, pp. 3195-3199, (2010); Park S.E., Kim S.H., Lee S.B., An H.J., Choi W.S., Moon O.G., Kim J.S., Shin H.J., Choi Y.R., Min K.O., Comparison of underwater and overground treadmill walking to improve gait pattern and muscle strength after stroke, J Phys Ther Sci, 24, pp. 1087-1090, (2012); Staub J.N., Kraemer W.J., Pandit A.L., Haug W.B., Comstock B.A., Dunn-Lewis C., Hooper D.R., Maresh C.M., Volek J.S., Hakkinen K., Positive effects of augmented verbal feedback on power production in NCAA Division i collegiate athletes, J StrengthCond Res, 27, pp. 2067-2072, (2013); Triplett N.T., Colado J.C., Benavent J., Alakhdar Y., Madera J.O., Gonzalez L.M., Tella V., Concentric and impact forces of singleleg in an aquatic environment versus on land, Med Sci Sports Exerc, 41, pp. 1790-1796, (2009); Waller M., Gersick M., Holman D., Various jump training styles for improvement of vertical jump performance, Strength Cond J, 35, pp. 82-89, (2013); Waller B., Ogonowska-Slodownik A., Vitor M., Lambeck J., Daly D., Kujala U.M., Heinonen A., Effect of therapeutic aquatic exercise on symptoms and function associated with lower limb osteoarthritis: Systematic review with meta-analysis, Phys Ther, 94, pp. 1383-1395, (2014); Walsh M.S., Harald B., Butterfield M.M., Santhosam J., Gender bias in the effects of arms and countermovement on jumping performance, J Strength Cond Res, 21, pp. 362-366, (2007)","T.J. Louder; Department of Kinesiology and Health Science, Utah State University, Logan, United States; email: talinlouder@yahoo.com","","NSCA National Strength and Conditioning Association","10648011","","","29194184","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-85049628934" "Seyedi M.; Zarei M.; Daneshjoo A.; Rajabi R.; Shirzad E.; Mozafaripour E.; Mohammadpour S.","Seyedi, Mohammadreza (57315485200); Zarei, Mostafa (57200677685); Daneshjoo, Abdolhamid (30267523100); Rajabi, Reza (23988029900); Shirzad, Elham (36560343500); Mozafaripour, Esmaeil (57193059473); Mohammadpour, Shadan (55965808500)","57315485200; 57200677685; 30267523100; 23988029900; 36560343500; 57193059473; 55965808500","Effects of FIFA 11 + warm-up program on kinematics and proprioception in adolescent soccer players: a parallel‑group randomized control trial","2023","Scientific Reports","13","1","5527","","","","5","10.1038/s41598-023-32774-3","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85151788581&doi=10.1038%2fs41598-023-32774-3&partnerID=40&md5=7c0d7d526a332b183141823f4765ccbe","Department of Sport Medicine, Sport Sciences Research Institute, Tehran, Iran; Sport Rehabilitation and Health Department, Faculty of Sports Sciences and Health, Shahid Beheshti University, Tehran, Iran; Department of Sports Injuries and Corrective Exercises, Faculty of Physical Education and Sport Science, Shahid Bahonar University of Kerman, Kerman, Iran; Department of Health and Sport Medicine, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran","Seyedi M., Department of Sport Medicine, Sport Sciences Research Institute, Tehran, Iran; Zarei M., Sport Rehabilitation and Health Department, Faculty of Sports Sciences and Health, Shahid Beheshti University, Tehran, Iran; Daneshjoo A., Department of Sports Injuries and Corrective Exercises, Faculty of Physical Education and Sport Science, Shahid Bahonar University of Kerman, Kerman, Iran; Rajabi R., Department of Health and Sport Medicine, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran; Shirzad E., Department of Health and Sport Medicine, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran; Mozafaripour E., Department of Health and Sport Medicine, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran; Mohammadpour S., Department of Health and Sport Medicine, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran","This study aimed to compare the effects of 8 weeks 11 + warm-up injury prevention program on kinematics and proprioception in adolescent male and female soccer players. Forty adolescent soccer players (20 males, 20 females) aged between 14–16 years old were randomly assigned into four groups. The experimental group performed the 11 + program for 8 weeks and the control group did their warm-up program. The kinematic variable in a cutting maneuver was measured using VICON motion analysis and ankle and knees’ proprioception by joint position sense (JPS) was measured using a digital inclinometer. For kinematic variables only significant differences in knee valgus among females 11 + compared with female and male control groups were found (P < 0.05). Moreover, there were significant improvements in joint position sense variables in 11 + groups compared to control groups (P < 0.05). In conclusion, the 11 + program was proven to be a useful warm-up protocol in improving knee valgus and JPS among female and male adolescent soccer players. We suggest adding more training elements to the 11 + program that aimed to enhance the proper alignment of lower extremities which may consequently improve joint kinematics. © 2023, The Author(s).","","Adolescent; Biomechanical Phenomena; Female; Humans; Knee; Knee Joint; Male; Proprioception; Soccer; Warm-Up Exercise; accident prevention; adolescent; ankle; article; clinical article; controlled study; female; human; kinematics; knee; lower limb; male; motion; proprioception; randomized controlled trial; soccer player; warm up; biomechanics; proprioception; soccer","Olivares-Jabalera J., Et al., Exercise-based training strategies to reduce the incidence or mitigate the risk factors of anterior cruciate ligament injury in adult football (Soccer) players: A systematic review, Int. J. Environ. Res. Public Health, 18, (2021); Hawkins R.D., Hulse M.A., Wilkinson C., Hodson A., Gibson M., The association football medical research programme: An audit of injuries in professional football, Br. J. Sports Med., 35, pp. 43-47, (2001); Eirale C., Tol J.L., Farooq A., Smiley F., Chalabi H., Low injury rate strongly correlates with team success in Qatari professional football, Br. J. Sports Med., 47, pp. 807-808, (2013); Orsi A.D., Et al., The effects of knee joint kinematics on anterior cruciate ligament injury and articular cartilage damage, Comput. Methods Biomech. Biomed. Eng., 19, pp. 493-506, (2016); Daneshjoo A., Abu Osman N.A., Sahebozamani M., Yusof A., Analysis of jumping-landing manoeuvers after different speed performances in soccer players, PLoS ONE, 10, (2015); Durall C.J., Et al., Associations between single-leg postural control and drop-landing mechanics in healthy women, J. Sport Rehabil., 20, pp. 406-418, (2011); Griffin L.Y., Et al., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, J. Am. Acad. Orthop. Surg., 8, pp. 141-150, (2000); Mancini S., Et al., Effects of a soccer-specific vertical jump on lower extremity landing kinematics, Sports Med. Health Sci, (2022); Walsh M., Boling M.C., McGrath M., Blackburn J.T., Padua D.A., Lower extremity muscle activation and knee flexion during a jump-landing task, J. Athl. Train, 47, pp. 406-413, (2012); Daneshjoo A., Mokhtar A., Rahnama N., Yusof A., The effects of comprehensive warm-up programs on proprioception, static and dynamic balance on male soccer players, PLoS ONE, 7, (2012); Zarei M., Et al., The 11+ Kids warm-up programme to prevent injuries in young Iranian male high-level football (soccer) players: A cluster-randomised controlled trial, J. Sci. Med. Sport, 23, pp. 469-474, (2020); Al Attar W.S.A., Et al., The FIFA 11+ shoulder injury prevention program was effective in reducing upper extremity injuries among soccer goalkeepers: A randomized controlled trial, Am. J. Sports Med., 49, pp. 2293-2300, (2021); Kiani A., Et al., Prevention of soccer-related knee injuries in teenaged girls, Arch. Intern. Med., 170, pp. 43-49, (2010); Walden M., Atroshi I., Magnusson H., Wagner P., Hagglund M., Prevention of acute knee injuries in adolescent female football players: cluster randomised controlled trial, BMC Musculoskelet. Disord., 344, (2012); Richmond S.A., Kang J., Doyle-Baker P.K., Nettel-Aguirre A., Emery C.A., A school-based injury prevention program to reduce sport injury risk and improve healthy outcomes in youth: A pilot cluster-randomized controlled trial, Clin. J. Sport Med. Off. J. Can. Acad. Sport Med., 26, pp. 291-298, (2016); van de Hoef P.A., Et al., Does a bounding exercise program prevent hamstring injuries in adult male soccer players?—A cluster-RCT, Scand. J. Med. Sci. Sports, 29, pp. 515-523, (2019); Thompson J.A., Et al., Biomechanical effects of an injury prevention program in preadolescent female soccer athletes, Am. J. Sports Med., 45, pp. 294-301, (2017); Dix C., Et al., Biomechanical changes during a 90º cut in collegiate female soccer players with participation in the 11, Int. J. Sports Phys. Ther., 16, pp. 671-680, (2021); Lopes M., Et al., Balance and proprioception responses to FIFA 11+ in amateur futsal players: Short and long-term effects, J. Sports Sci., 37, pp. 2300-2308, (2019); Navarro-Santana M.J., Et al., Effects of two exercise programmes on joint position sense, dynamic balance and countermovement jump in male amateur football players. A randomised controlled trial, J. Sports Sci., 38, pp. 2620-2630, (2020); Al Attar W.S.A., Soomro N., Pappas E., Sinclair P.J., Sanders R.H., Adding a post-training FIFA 11+ exercise program to the pre-training FIFA 11+ injury prevention program reduces injury rates among male amateur soccer players: A cluster-randomised trial, J. Physiother., 63, pp. 235-242, (2017); Mozafaripour E., Seidi F., Minoonejad H., Bayattork M., Khoshroo F., The effectiveness of the comprehensive corrective exercise program on kinematics and strength of lower extremities in males with dynamic knee valgus: A parallel-group randomized wait-list controlled trial, BMC Musculoskelet. Disord., 23, pp. 1-10, (2022); Cochrane J.L., Et al., Training affects knee kinematics and kinetics in cutting maneuvers in sport, Med. Sci. Sports Exerc., 42, pp. 1535-1544, (2010); Pfile K.R., Et al., Different exercise training interventions and drop-landing biomechanics in high school female athletes, J. Athl. Train., 48, pp. 450-462, (2013); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes: Decreased impact forces and increased hamstring torques, Am. J. 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Ther., 16, (2021); Gilman S., Joint position sense and vibration sense: Anatomical organisation and assessment, J. Neurol. Neurosurg. Psychiat., 73, pp. 473-477, (2002); Steffen K., Bakka H., Myklebust G., Bahr R., Performance aspects of an injury prevention program: A ten-weeks intervention in adolescent female football players, Scand. J. Med. Sci. Sports, 18, pp. 596-604, (2008); Hall R., Foss K.B., Hewett T.E., Myer G.D., Sport specialization’s association with an increased risk of developing anterior knee pain in adolescent female athletes, J. Sport Rehabil., 24, pp. 31-35, (2015); Ludwig O., Kelm J., Hammes A., Schmitt E., Frohlich M., Neuromuscular performance of balance and posture control in childhood and adolescence, Heliyon, 6, (2020); Taube W., Gruber M., Gollhofer A., Spinal and supraspinal adaptations associated with balance training and their functional relevance, Acta Physiol., 193, pp. 101-116, (2008); Subasi S.S., Gelecek N., Aksakoglu G., Effects of different warm-up periods on knee proprioception and balance in healthy young individuals, J. Sport Rehabil., 17, pp. 186-205, (2008); de Villarreal E.S.-S., Kellis E., Kraemer W.J., Izquierdo M., Determining variables of plyometric training for improving vertical jump height performance: A meta-analysis, J. Strength Cond. Res., 23, pp. 495-506, (2009); Asgari M., Nazari B., Bizzini M., Jaitner T., Effects of the FIFA 11+ program on performance, biomechanical measures, and physiological responses: A systematic review, J. Sport Health Sci., 12, pp. 226-235, (2022); Myer G.D., Sugimoto D., Thomas S., Hewett T.E., The influence of age on the effectiveness of neuromuscular training to reduce anterior cruciate ligament injury in female athletes: A meta-analysis, Am. J. Sports Med., 41, pp. 203-215, (2013); Faul F., Erdfelder E., Lang A.-G., Buchner A., G* Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences, Behav. Res. Methods, 39, pp. 175-191, (2007); Orishimo K.F., Kremenic I.J., Mullaney M.J., McHugh M.P., Nicholas S.J., Adaptations in single-leg hop biomechanics following anterior cruciate ligament reconstruction, Knee Surg. Sports Traumatol. Arthrosc., 18, pp. 1587-1593, (2010); Hardy L., Huxel K., Brucker J., Nesser T., Prophylactic ankle braces and star excursion balance measures in healthy volunteers, J. Athl. Train, 43, pp. 347-351, (2008); Daneshjoo A., Et al., Comparison of knee and hip kinematics during landing and cutting between elite male football and futsal players, Healthcare, 9, (2021); Romero-Franco N., Montano-Munuera J.A., Fernandez-Dominguez J.C., Jimenez-Reyes P., Validity and reliability of a digital inclinometer to assess knee joint position sense in an open kinetic chain, J. Sport Rehabil., 28, pp. 332-338, (2019); Pallant J., SPSS Survival Manual: A Step By Step Guide To Data Analysis Using SPSS, (2009)","M. Seyedi; Department of Sport Medicine, Sport Sciences Research Institute, Tehran, Iran; email: seyedi@ssrc.ac.ir","","Nature Research","20452322","","","37016130","English","Sci. Rep.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85151788581" "Rusdiana A.; Dede Rohmat N.; Ronald Ray H.; Syahid A.M.","Rusdiana, Agus (57216643240); Dede Rohmat, N. (57220483833); Ronald Ray, Hamidie (56780225800); Syahid, Angga M. (57216297751)","57216643240; 57220483833; 56780225800; 57216297751","Effect of fatigue on the kinematic variables of jump header performance in soccer","2020","Journal of Physical Education and Sport","20","2","95","649","657","8","5","10.7752/jpes.2020.02095","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85083050950&doi=10.7752%2fjpes.2020.02095&partnerID=40&md5=10486ac72ff43153f137dd963742db69","Faculty of Sport and Health Education, Universitas Pendidikan Indonesia, Indonesia","Rusdiana A., Faculty of Sport and Health Education, Universitas Pendidikan Indonesia, Indonesia; Dede Rohmat N., Faculty of Sport and Health Education, Universitas Pendidikan Indonesia, Indonesia; Ronald Ray H., Faculty of Sport and Health Education, Universitas Pendidikan Indonesia, Indonesia; Syahid A.M., Faculty of Sport and Health Education, Universitas Pendidikan Indonesia, Indonesia","The purpose of this study was to examine the influence of cardiovascular fatigue on the lower and upper body kinematic and kinetic movements while performing jump heading in soccer. Kinematic and kinetic analyses consist of ball velocity, jump height, maximal leg power, vertical force, knee extension angular velocity take off, trunk flexion, trunk extension angular velocity, trunk flexion angular velocity, knee flexion, head velocity, and landing. In this study a quantitative descriptive method was used. The study involved 21 male university level players as participants. The participants had the following characteristics: a mean age 18.1 ± 2.6 years; height 1.66 ± 0.04 m, body mass 60.6 ± 4.26 kg, BMI 22.1 ± 1.2 kg/m2, VO2Max 45.4 ± 3.05 m/kg/min, and mean maximum heart beats 187.0 ± 4.63 bpm. Furthermore, there were significant differences in ball velocity, jump height, maximum leg power, maximum trunk flexion, head velocity, and feet landing indicators (p = 0.033, p = 0.041, p = 0.034, p = 0.042, p = 0.041, and p = 0.023, respectively) with the p-value = 0.000 < 0.05. We recommend that coaches and athletes strengthen their core muscles. In addition, cervical and neck muscles should become the focus in complementing exercise programs. © JPES.","Fatigue; Heading; Maximum heart rate; Soccer; Sport biomechanics","","Arastoo A.A., Aghdam E.M., Habibi A.H., Zahednejad S., Kinetic factors of vertical jumping for heading a ball in flexible flatfooted amateur soccer players with and without insole adoption, Prosthetics and Orthotics International, 38, 3, pp. 204-210, (2014); Baltzopoulos V., Biomechanical Evaluation of Movement in Sport and Exercise, Biomechanical Evaluation of Movement in Sport and Exercise, (2008); Bangsbo J., Iaia F.M., Krustrup P., Metabolic response and fatigue in soccer, International Journal of Sports Physiology and Performance, 2, 2, pp. 111-127, (2007); Barte J.C.M., Nieuwenhuys A., Geurts S.A.E., Kompier M.A.J., Effects of fatigue on interception decisions in soccer, International Journal of Sport and Exercise Psychology, pp. 1-12, (2018); Bartlett R., Introduction to Sports Biomechanics, Introduction to Sports Biomechanics, (2018); Bauer J.A., Thomas T.S., Cauraugh J.H., Kaminski T.W., Hass C.J., Impact forces and neck muscle activity in heading by collegiate female soccer players, Journal of Sports Sciences, 19, 3, pp. 171-179, (2001); Becker S., Frohlich M., Kelm J., Ludwig O., Change of Muscle Activity as Well as Kinematic and Kinetic Parameters during Headers after Core Muscle Fatigue, Sports, 5, 1, (2017); Marques-Jimenez D., Calleja-Gonzalez J., Arratibel I., Delextrat A., Terrados N., Fatigue and Recovery in Soccer: Evidence and Challenges, The Open Sports Sciences Journal, 10, pp. 52-70, (2017); Dezman Z.D.W., Ledet E.H., Kerr H.A., Neck Strength Imbalance Correlates With Increased Head Acceleration in Soccer Heading, Sports Health, 5, 4, pp. 320-326, (2013); Economiche S., Bucci P.P., Cubo C., Scoppa V., Calabria U., Fatigue and Team Performance in Soccer: Evidence from the Fifa World Cup and The, 7519, pp. 0-16, (2013); Gu F., Biomechanics Analysis of Side Header in Soccer Players. Proceedings of the 2016 6Th International Conference on Machinery, Materials, Environment, Biotechnology and Computer (Mmebc), 88, Mmebc, pp. 1305-1308, (2016); Himanshu T., Tirthankar C., Debojyoti B., Subhojit C., Suranjana S., Sudan Madhu P., Evaluation and Assessment of Leg Muscle Activity and Fatigue Accross Two Popular Step Test Exercises, 13, (2017); James J., Ambegaonkar J.P., Caswell S.V., Onate J., Cortes N., Analyses of Landing Mechanics in Division I Athletes Using the Landing Error Scoring System, Sports Health, 8, 2, pp. 182-186, (2016); Kristensen L.B., Andersen T.B., Sorensen H., Soccer: Optimizing segmental movement in the jumping header in soccer, Sports Biomechanics, 3, 2, pp. 195-208, (2004); Maher M.E., Hutchison M., Cusimano M., Comper P., Schweizer T.A., Concussions and heading in soccer: A review of the evidence of incidence, mechanisms, biomarkers and neurocognitive outcomes, Brain Injury, 28, 3, pp. 271-285, (2014); Marques-Jimenez D., Calleja-Gonzalez J., Arratibel I., Delextrat A., Terrados N., Fatigue and Recovery in Soccer: Evidence and Challenges, The Open Sports Sciences Journal, 10, pp. 52-70, (2017); McCrory P.R., Brain injury and heading in soccer, Bmj, 327, 7411, pp. 351-352, (2003); Mohr M., Krustrup P., Bangsbo J., Fatigue in soccer: A brief review, Journal of Sports Sciences, 23, 6, pp. 593-599, (2005); Mohr M., Mujika I., Santisteban J., Randers M.B., Bischoff R., Solano R., Krustrup P., Examination of fatigue development in elite soccer in a hot environment: A multi-experimental approach, Scandinavian Journal of Medicine and Science in Sports, 20, pp. 125-132, (2010); Moir G.L., Three different methods of calculating vertical jump height from force platform data in men and women, Measurement in Physical Education and Exercise Science, 12, 4, pp. 207-218, (2008); Naunheim R.S., Bayly P.V., Standeven J., Neubauer J.S., Lewis L.M., Genin G.M., Linear and angular head accelerations during heading of a soccer ball, Medicine and Science in Sports and Exercise, 35, 8, pp. 1406-1412, (2003); Queen R.M., Weinhold P.S., Kirkendall D.T., Yu B., Theoretical Study of the Effect of Ball Properties on Impact Force in Soccer Heading, Medicine and Science in Sports and Exercise, 35, 12, pp. 2069-2076, (2003); Requena B., Garcia I., Requena F., Bressel E., Saez-Saez de Villarreal E., Cronin J., Association between traditional standing vertical jumps and a soccer-specific vertical jump, European Journal of Sport Science, 14, pp. 37-41, (2014); Shewchenko N., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football. Part 2: Biomechanics of ball heading and head response, British Journal of Sports Medicine, 39, pp. 26-32, (2005); Small K., McNaughton L.R., Greig M., Lohkamp M., Lovell R., Soccer fatigue, sprinting and hamstring injury risk, International Journal of Sports Medicine, 30, 8, pp. 573-578, (2009); Sunami S., Maruyama T., Motion and EMG Analysis of Soccer-ball Heading for the Lateral Direction, Football Science, 5, pp. 7-17, (2007); Tierney R.T., Higgins M., Caswell S.V., Brady J., McHardy K., Driban J.B., Darvish K., Sex differences in head acceleration during heading while wearing soccer headgear, Journal of Athletic Training, 43, 6, pp. 578-584, (2008)","A. Rusdiana; Faculty of Sport and Health Education, Universitas Pendidikan Indonesia, Indonesia; email: agus.rusdiana@upi.edu","","Editura Universitatii din Pitesti","22478051","","","","English","J. Phys. Educ. Sport","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85083050950" "Cormier P.; Tsai M.-C.; Meylan C.; Klimstra M.","Cormier, Patrick (57216605206); Tsai, Ming-Chang (57193548288); Meylan, César (26768140200); Klimstra, Marc (16304420300)","57216605206; 57193548288; 26768140200; 16304420300","Comparison of acceleration-speed profiles from training and competition to individual maximal sprint efforts","2023","Journal of Biomechanics","157","","111724","","","","4","10.1016/j.jbiomech.2023.111724","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85164698786&doi=10.1016%2fj.jbiomech.2023.111724&partnerID=40&md5=03700adc6c8add52af49acf1ab8b7f43","Canadian Sport Institute Pacific, Victoria, BC, Canada; School of Exercise Science, Physical and Health Education, University of Victoria, Victoria, BC, Canada; School of Kinesiology, University of British Columbia, Vancouver, BC, Canada; Health and Athletic Performance Department, Canada Soccer, Ottawa, ON, Canada","Cormier P., Canadian Sport Institute Pacific, Victoria, BC, Canada, School of Exercise Science, Physical and Health Education, University of Victoria, Victoria, BC, Canada, Health and Athletic Performance Department, Canada Soccer, Ottawa, ON, Canada; Tsai M.-C., Canadian Sport Institute Pacific, Victoria, BC, Canada; Meylan C., Canadian Sport Institute Pacific, Victoria, BC, Canada, School of Kinesiology, University of British Columbia, Vancouver, BC, Canada, Health and Athletic Performance Department, Canada Soccer, Ottawa, ON, Canada; Klimstra M., Canadian Sport Institute Pacific, Victoria, BC, Canada, School of Exercise Science, Physical and Health Education, University of Victoria, Victoria, BC, Canada","This study aimed to (1) compare “in-situ” monitored acceleration-speed (ASin-situ) profile metrics from training/competition data in elite female soccer players to similar metrics from profiles developed from isolated maximal sprint efforts (ASsprint) and; (2) compare the confidence interval (CI) and a Tukey boxplot (BP) outlier removal technique on the training/competition data to derive ASin-situ profiles. Fifteen national team soccer players participated in a 4-week camp while wearing 10 Hz GNSS units. Towards the middle of the camp, 2 × 40 m isolated maximal sprints were performed. ASin-situ profiles (theoretical maximum acceleration A0 in m∙s−2 and speed S0 in m∙s−1) were computed using the CI and BP techniques with training/competition data. The sprint data were modelled separately to construct horizontal force–velocity (FV) profiles, from which ASsprint profiles were derived. Bland-Altman analysis was used to assess agreement between the CI- and BP-derived ASin-situ profiles to the ASsprint profiles, as well as regression analysis for systematic and proportional bias. Additionally, 1-way ANOVAs with Tukey posthoc compared the metrics between each method of analysis. Using the BP method, good agreement of the ASin-situ with ASsprint profile metrics A0/S0 was displayed, whereas good to moderate agreement was shown for the CI. The CI technique showed a proportional bias for A0/S0. Good to excellent intertrial reliability was demonstrated for isolated sprint metrics. Both BP and CI techniques provided comparable ASin-situ profiles to ASsprint profiles. This current research demonstrated that ASin-situ profiling is applicable in elite women's soccer and will have further application in many team sports. © 2023 Elsevier Ltd","Biomechanics; Running; Soccer; Sprint kinematics; Wearables","Sports; Wearable technology; Confidence interval; Interval technique; Maximum acceleration; Outlier removals; Running; Soccer player; Speed profile; Sprint kinematic; Training and competitions; Wearables; acceleration; adult; article; biomechanics; competition; controlled study; female; human; intermethod comparison; kinematics; protein fingerprinting; reliability; running; soccer; soccer player; team sport; theoretical study; velocity; Regression analysis","Alonso-Callejo A., Garcia-Unanue J., Perez-Guerra A., Gomez D., Sanchez-Sanchez J., Gallardo L., Oliva-Lozano J.M., Felipe J.L., Effect of playing position and microcycle days on the acceleration speed profile of elite football players, Sci. Rep., 12, (2022); Bland J.M., Altman D.G., Statistical methods for assessing agreement between two methods of clinical measurement, Lancet, 1, pp. 307-310, (1986); Clavel P., Leduc C., Morin J.-B., Owen C., Samozino P., Peeters A., Buchheit M., Lacome M., Concurrent validity and reliability of sprinting force-velocity profile assessed with GPS devices in Elite athletes, Int. J. Sports Physiol. Perform., 12, pp. 1527-1531, (2022); Clavel P., Leduc C., Morin J.-B., Buchheit M., Lacome M., Reliability of individual acceleration-speed profile in-situ in elite youth soccer players, J. Biomech., 153, (2023); Cormier P., Tsai M.-C., Meylan C., Agar-Newman D., Epp-Stobbe A., Kalthoff Z., Klimstra M., Concurrent validity and reliability of different technologies for sprint-derived horizontal force-velocity-power profiling, J. Strength Cond. Res., (2023); Delves R.I.M., Aughey R.J., Ball K., Duthie G.M., The quantification of acceleration events in elite team sport: a systematic review, Sports Med. - Open, 7, (2021); (2023); Fornasier-Santos C., Arnould A., Jusseaume J., Millot B., Guilhem G., Couturier A., Samozino P., Slawinski J., Morin J.-B., Sprint acceleration mechanical outputs derived from position– or velocity–time data: A multi-system comparison study, Sensors, 22, (2022); Hopkins W.G., Marshall S.W., Batterham A.M., Hanin J., Progressive statistics for studies in sports medicine and exercise science, Med. Sci. Sports Exerc., 41, pp. 3-13, (2009); Imbach F., Ragheb W., Leveau V., Chailan R., Candau R., Perrey S., Using global navigation satellite systems for modeling athletic performances in elite football players, Sci. Rep., 12, (2022); Koo T.K., Li M.Y., A guideline of selecting and reporting intraclass correlation coefficients for reliability research, J. Chiropr. Med., 15, pp. 155-163, (2016); Krzywinski M., Altman N., Visualizing samples with box plots, Nat. Methods, 11, pp. 119-120, (2014); Lahti J., Mendiguchia J., Edouard P., Morin J.-B., A novel multifactorial hamstring screening protocol: association with hamstring muscle injuries in professional football (soccer) – a prospective cohort study, Biol. Sport, 39, pp. 1021-1031, (2021); Lopez-Sagarra A., Baena-Raya A., Casimiro-Artes M.A., Granero-Gil P., Rodriguez-Perez M.A., Seasonal changes in the acceleration–speed profile of elite soccer players: A longitudinal study, Appl. Sci., 12, (2022); Malone J.J., Lovell R., Varley M.C., Coutts A.J., Unpacking the black box: Applications and considerations for using GPS devices in sport, Int. J. Sports Physiol. Perform., 12, pp. S218-S226, (2017); Mendiguchia J., Edouard P., Samozino P., Brughelli M., Cross M., Ross A., Gill N., Morin J.B., Field monitoring of sprinting power-force-velocity profile before, during and after hamstring injury: two case reports, J. Sports Sci., 34, pp. 535-541, (2016); Morin J.-B., Samozino P., Murata M., Cross M.R., Nagahara R., A simple method for computing sprint acceleration kinetics from running velocity data: Replication study with improved design, J. Biomech., 94, pp. 82-87, (2019); Morin J.-B., Le Mat Y., Osgnach C., Barnabo A., Pilati A., Samozino P., di Prampero P.E., Individual acceleration-speed profile in-situ: A proof of concept in professional football players, J. Biomech., 123, (2021); Samozino P., Rabita G., Dorel S., Slawinski J., Peyrot N., Saez de Villarreal E., Morin J.-B., A simple method for measuring power, force, velocity properties, and mechanical effectiveness in sprint running, Scand. J. Med. Sci. Sports, 26, pp. 648-658, (2016); Simperingham K.D., Cronin J.B., Pearson S.N., Ross A., Reliability of horizontal force–velocity–power profiling during short sprint-running accelerations using radar technology, Sports Biomech., 18, pp. 88-99, (2019); Torres-Ronda L., Beanland E., Whitehead S., Sweeting A., Clubb J., Tracking systems in team sports: A narrative review of applications of the data and sport specific analysis, Sports Med. - Open, 8, (2022); Trewin J., Meylan C., Varley M.C., Cronin J., The match-to-match variation of match-running in elite female soccer, J. Sci. Med. Sport, 21, pp. 196-201, (2018); Tukey J.W., Exploratory data analysis, (1977); Varley M.C., Jaspers A., Helsen W.F., Malone J.J., Methodological considerations when quantifying high-intensity efforts in team sport using global positioning system technology, Int. J. Sports Physiol. Perform., 12, pp. 1059-1068, (2017)","P. Cormier; University of Victoria, School of Exercise Science, Physical and Health Education, Victoria, V8W 2Y2, Canada; email: pcormier@csipacific.ca","","Elsevier Ltd","00219290","","JBMCB","37451206","English","J. Biomech.","Article","Final","","Scopus","2-s2.0-85164698786" "Ruscello B.; Esposito M.; Siligato G.; Lunetta L.; Marcelli L.; Tanella L.P.; Gabrielli P.R.; D'Ottavio S.","Ruscello, Bruno (55825604400); Esposito, Mario (56238804300); Siligato, Gianmarco (57219149854); Lunetta, Laura (57188768898); Marcelli, Lorenzo (58092858400); Tanella, Laura Panpan (57219340448); Gabrielli, Paolo R. (57212086711); D'Ottavio, Stefano (6603498439)","55825604400; 56238804300; 57219149854; 57188768898; 58092858400; 57219340448; 57212086711; 6603498439","Gender differences in instep soccer kicking biomechanics, investigated through a 3D human motion tracker system","2020","Journal of Sports Medicine and Physical Fitness","60","8","","1072","1080","8","6","10.23736/S0022-4707.20.10676-5","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091444790&doi=10.23736%2fS0022-4707.20.10676-5&partnerID=40&md5=89cf5f197d2a53bc4cffd37ee6178824","School of Sport Sciences and Exercise, Faculty of Medicine and Surgery, Tor Vergata University, Rome, Italy; School of Sports and Exercise Sciences, San Raffaele University, Rome, Italy; Department of Industrial Engineering, Faculty of Engineering, Tor Vergata University, Rome, Italy; LUI SS SportLab, LUI SS University, Rome, Italy; Department of Clinical Science and Translational Medicine, Faculty of Medicine and Surgery, Tor Vergata University, Rome, Italy","Ruscello B., School of Sport Sciences and Exercise, Faculty of Medicine and Surgery, Tor Vergata University, Rome, Italy, School of Sports and Exercise Sciences, San Raffaele University, Rome, Italy, Department of Industrial Engineering, Faculty of Engineering, Tor Vergata University, Rome, Italy, LUI SS SportLab, LUI SS University, Rome, Italy; Esposito M., School of Sport Sciences and Exercise, Faculty of Medicine and Surgery, Tor Vergata University, Rome, Italy; Siligato G., School of Sport Sciences and Exercise, Faculty of Medicine and Surgery, Tor Vergata University, Rome, Italy, Department of Clinical Science and Translational Medicine, Faculty of Medicine and Surgery, Tor Vergata University, Rome, Italy; Lunetta L., School of Sport Sciences and Exercise, Faculty of Medicine and Surgery, Tor Vergata University, Rome, Italy, Department of Industrial Engineering, Faculty of Engineering, Tor Vergata University, Rome, Italy; Marcelli L., School of Sport Sciences and Exercise, Faculty of Medicine and Surgery, Tor Vergata University, Rome, Italy; Tanella L.P., School of Sport Sciences and Exercise, Faculty of Medicine and Surgery, Tor Vergata University, Rome, Italy; Gabrielli P.R., School of Sport Sciences and Exercise, Faculty of Medicine and Surgery, Tor Vergata University, Rome, Italy, LUI SS SportLab, LUI SS University, Rome, Italy; D'Ottavio S., School of Sport Sciences and Exercise, Faculty of Medicine and Surgery, Tor Vergata University, Rome, Italy","BAC KGROUND : This study aims at describing and comparing each other male and female soccer players kicking instep a stationary ball. The different measures we collected by the 3D motion capture system Movit G1 and the High-Speed Camera (240 fps) were considered as dependent variables, whereas the gender was considered as the independent one. METHOD S: Twenty soccer well trained non-professional players: 10 men (age: 25.3±6.5 yrs; height 1.80±0.07 m; body mass 76.9±13.2 kg) and 10 women (age: 19±3.34 yrs; height 1.64±0.07 m; body mass 58.2±7.2 kg) volunteered to participate in the study. RESULTS: Gender differences were found, with a statistical significance (P<0.05) or interesting magnitude (Cohen d>0.5). The most relevant ones were the differences in hip extension of the kicking leg when the foot of the supporting one touches the ground, just before the impact on the ball (independent sample t-Test; P=0.03; Cohen d=1.64) and the speed of the ball, reached immediately after kicking (P<0.001;d=1.23). CONCLU SION S: These results, together with the greater pelvic acceleration shown by men compared to women, highlight the need to develop a gender-differentiated training model, in order to customize the kicking technique in women and to reduce the likelihood, currently higher than for men, of kicking related injuries. © 2020 Edizioni Minerva Medica. All rights reserved.","Exercise; Imaging; Soccer; Three-Dimensional","Acceleration; Adult; Biomechanical Phenomena; Female; Foot; Hip; Humans; Knee; Lower Extremity; Male; Pelvis; Sex Characteristics; Sex Factors; Soccer; Time and Motion Studies; Young Adult; acceleration; adult; biomechanics; female; foot; hip; human; knee; lower limb; male; pelvis; physiology; sex factor; sexual characteristics; soccer; task performance; young adult","Ra?a A, Kuva?i? G, De Giorgio A, Sellami M, Ardig-2 LP, Bragazzi NL, Et al., The ball kicking speed: A new, efficient performance indicator in youth soccer, PLoS One, 14, (2019); Woods CT, Raynor AJ, Bruce L, McDonald Z, Robertson S., The application of a multi-dimensional assessment approach to talent identification in Australian football, J Sports Sci, 34, pp. 1340-25, (2016); Langhout R, Weber M, Tak I, Lenssen T., Timing characteristics of body segments during the maximal instep kick in experienced football players, J Sports Med Phys Fitness, 56, pp. 849-256, (2016); Chew-Bullock TS, Anderson DI, Hamel KA, Gorelick ML, Wallace SA, Sidaway B., Kicking performance in relation to balance ability over the support leg, Hum Mov Sci, 31, pp. 1615-223, (2012); Andersen TB, D-2rge HC., The influence of speed of approach and accuracy constraint on the maximal speed of the ball in soccer kicking, Scand J Med Sci Sports, 21, pp. 79-284, (2011); Ali A., Measuring soccer skill performance: A review, Scand J Med Sci Sports, 21, pp. 170-283, (2011); Pereira Santiago PR, Palucci Vieira LH, Barbieri FA, Moura FA, Exel Santana J, de Andrade VL, Et al., Comparison of the Kinematic Patterns of Kick Between Brazilian and Japanese Young Soccer Players, Asian J Sports Med, 7, (2016); Katis A, Kellis E, Lees A., Age and gender differences in kinematics of powerful instep kicks in soccer, Sports Biomech, 14, pp. 287-299, (2015); Katis A, Amiridis I, Kellis E, Lees A., Recovery of powerful kick biomechanics after intense running fatigue in male and female soccer players, Asian J Sports Med, 5, (2014); Kapid-2i? A, Huremovi? T, Biberovic A., Kinematic analysis of the instep kick in youth soccer players, J Hum Kinet, 42, pp. 81-290, (2014); Ju-2rez D, Mallo J, De Subijana C, Navarro E., Kinematic analysis of kicking in young top-class soccer players, J Sports Med Phys Fitness, 51, pp. 366-273, (2011); Lees A, Asai T, Andersen TB, Nunome H, Sterzing T., The biomechanics of kicking in soccer: A review, J Sports Sci, 28, pp. 805-217, (2010); Barfield WR, Kirkendall DT, Yu B., Kinematic instep kicking differences between elite female and male soccer players, J Sports Sci Med, 1, pp. 72-29, (2002); Baumgart C, Hoppe MW, Freiwald J., Different endurance characteristics of female and male german soccer players, Biol Sport, 31, pp. 227-232, (2014); Pollard R, G-2mez MA., Comparison of home advantage in men-2s and women-2s football leagues in Europe, Eur J Sport Sci, 14, pp. S77-283, (2014); Bradley PS, Dellal A, Mohr M, Castellano J, Wilkie A., Gender differences in match performance characteristics of soccer players competing in the UEFAChampions League, Hum Mov Sci, 33, pp. 159-271, (2014); Ruscello B, Esposito M, Fusco C, Ceccarelli C, Pomponi S, Filetti C, Et al., Acute effects of two different initial heart rates on testing the repeated sprint ability in elite women soccer players, J Sports Med Phys Fitness, 60, pp. 527-235, (2020); Ruscello B, Esposito M, Partipilo F, Di Cicco D, Filetti C, Pantanella L, Et al., Exercise-to-rest ratios in repeated sprint ability training in women-2s soccer, J Sports Med Phys Fitness, 58, pp. 1790-1829, (2018); Costantini G, Casali D, Paolizzo F, Alessandrini M, Micarelli A, Viziano A, Et al., Towards the enhancement of body standing balance recovery by means of a wireless audio-biofeedback system, Med Eng Phys, 54, pp. 74-281, (2018); Ricci M, Terribili M, Giannini F, Errico V, Pallotti A, Galasso C, Et al., Wearable-based electronics to objectively support diagnosis of motor impairments in school-aged children, J Biomech, 83, pp. 243-252, (2019); Alcock A, Gilleard W, Brown NAT, Baker J, Hunter A., Initial ball flight characteristics of curve and instep kicks in elite women-2s football, J Appl Biomech, 28, pp. 70-27, (2012); Brooks KA, Clark SL, Dawes JJ., Isokinetic Strength and Performance in Collegiate Women-2s Soccer, J Nov Physiother, (2013); Brophy RH, Backus S, Kraszewski AP, Steele BC, Ma Y, Osei D, Bradley PS, Dellal A, Mohr M, Castellano J, Wil and muscle activation during soccer kick, J Bone Joint Surg Am, 92, pp. 2050-28, (2010); Li Y, Alexander M, Glazebrook C, Leiter J., Quantifying Inter-Segmental Coordination during the Instep Soccer Kicks, Int J Exerc Sci, 9, pp. 646-256, (2016); Augustus S, Mundy P, Smith N., Support leg action can contribute to maximal instep soccer kick performance: An intervention study, J Sports Sci, 35, pp. 89-298, (2017); Langhout R, Tak I, van der Westen R, Lenssen T., Range of motion of body segments is larger during the maximal instep kick than during the submaximal kick in experienced football players, J Sports Med Phys Fitness, 57, pp. 388-295, (2017); Hunter AH, Angilletta MJ, Pavlic T, Lichtwark G, Wilson RS., Modeling the two-dimensional accuracy of soccer kicks, J Biomech, 72, pp. 159-266, (2018); Nunome H, Inoue K, Watanabe K, Iga T, Akima H., Dynamics of submaximal effort soccer instep kicking, J Sports Sci, 36, pp. 2588-295, (2018); Peacock JC, Ball K., The influence of joint rigidity on impact efficiency and ball velocity in football kicking, J Biomech, 71, pp. 245-250, (2018); Borman KM, Kurdek LA., Gender differences associated with playing high school varsity soccer, J Youth Adolesc, 16, pp. 379-2400, (1987); Smith T, Gilleard W., Three-dimensional analysis of a lofted instep kick by male and female footballers, Eur J Sport Sci, 16, pp. 571-264, (2016)","B. Ruscello; School of Sport Sciences and Exercise, Faculty of Medicine and Surgery, Tor Vergata University, Rome, Italy; email: bruno.ruscello@uniroma2.it; B. Ruscello; School of Sports and Exercise Sciences, San Raffaele University, Rome, Italy; email: bruno.ruscello@uniroma2.it; B. Ruscello; Department of Industrial Engineering, Faculty of Engineering, Tor Vergata University, Rome, Italy; email: bruno.ruscello@uniroma2.it; B. Ruscello; LUI SS SportLab, LUI SS University, Rome, Italy; email: bruno.ruscello@uniroma2.it","","Edizioni Minerva Medica","00224707","","JMPFA","32955833","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-85091444790" "Sasaki S.; Koga H.; Krosshaug T.; Kaneko S.; Fukubayashi T.","Sasaki, Shogo (37015495700); Koga, Hideyuki (12763750800); Krosshaug, Tron (55888189500); Kaneko, Satoshi (37015402200); Fukubayashi, Toru (7003671492)","37015495700; 12763750800; 55888189500; 37015402200; 7003671492","Biomechanical Analysis of Defensive Cutting Actions during Game Situations: Six Cases in Collegiate Soccer Competitions","2015","Journal of Human Kinetics","46","1","","9","18","9","7","10.1515/hukin-2015-0029","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84937807281&doi=10.1515%2fhukin-2015-0029&partnerID=40&md5=6de5185fefb94a78ac222646001df64b","Faculty of Health Sciences, Tokyo Ariake University of Medical and Health Sciences, 2-9-1 Ariake, Koto-ku, Tokyo, 135-0063, Japan; Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University, Tokyo, Japan; Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Graduate School of Sport Sciences, Waseda University, Saitama, Japan; Faculty of Sport Sciences, Waseda University, Saitama, Japan","Sasaki S., Faculty of Health Sciences, Tokyo Ariake University of Medical and Health Sciences, 2-9-1 Ariake, Koto-ku, Tokyo, 135-0063, Japan; Koga H., Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University, Tokyo, Japan; Krosshaug T., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Kaneko S., Graduate School of Sport Sciences, Waseda University, Saitama, Japan; Fukubayashi T., Faculty of Sport Sciences, Waseda University, Saitama, Japan","The strengths of interpersonal dyads formed by the attacker and defender in one-on-one situations are crucial for performance in team ball sports such as soccer. The purpose of this study was to analyze the kinematics of one-on-one defensive movements in soccer competitions, and determine the relationships between lower limb kinematics and the center of mass translation during cutting actions. Six defensive scenes in which a player was responding to an offender's dribble attack were selected for analysis. To reconstruct the three-dimensional kinematics of the players, we used a photogrammetric model-based image-matching technique. The hip and knee kinematics were calculated from the matched skeleton model. In addition, the center of mass height was expressed as a ratio of each participant's body height. The relationships between the center of mass height and the kinematics were determined by the Pearson's product-moment correlation coefficient. The normalized center of mass height at initial contact was correlated with the vertical center of mass displacement (r = 0.832, p = 0.040) and hip flexion angle at initial contact (r = -0.823, p = 0.044). This suggests that the lower center of mass at initial contact is an important factor to reduce the downwards vertical center of mass translation during defensive cutting actions, and that this is executed primarily through hip flexion. It is therefore recommended that players land with an adequately flexed hip at initial contact during one-on-one cutting actions to minimize the vertical center of mass excursion. © Shogo Sasaki et al. 2015.","center of mass; defender; kinematics; performance; Video analysis","","Bere T., Mok K.M., Koga H., Krosshaug T., Nordsletten L., Bahr R., Kinematics of anterior cruciate ligament ruptures in World Cup alpine skiing: 2 case reports of the slip-catch mechanism, Am J Sports Med, 41, 5, pp. 1067-1073, (2013); Boden B.P., Torg J.S., Knowles S.B., Hewett T.E., Video analysis of anterior cruciate ligament injury: Abnormalities in hip and ankle kinematics, Am J Sports Med, 37, 2, pp. 252-259, (2009); Bradshaw R.J., Young W.B., Russell A., Burge P., Comparison of offensive agility techniques in Australian Rules football, J Sci Med Sport, 14, 1, pp. 65-69, (2011); Beutler A., De La Motte S., Marshall S., Padua D., Boden B., Muscle strength and qualitative jump-landing differences in male and female military cadets: The jump-ACL study, J Sports Sci Med, 8, 4, pp. 663-671, (2009); Cohen J., A power primer, Psychol Bull, 112, 1, pp. 155-159, (1992); Duarte R., Araujo D., Davids K., Travassos B., Gazimba V., Sampaio J., Interpersonal coordination tendencies shape 1-vs-1 sub-phase performance outcomes in youth soccer, J Sports Sci, 30, 9, pp. 871-877, (2012); Fong D.T., Hong Y., Shima Y., Krosshaug T., Yung P.S., Chan K.M., Biomechanics of supination ankle sprain: A case report of an accidental injury event in the laboratory, Am J Sports Med, 37, 4, pp. 822-827, (2009); Fong D.T., Ha S.C., Mok K.M., Chan C.W., Chan K.M., Kinematics analysis of ankle inversion ligamentous sprain injuries in sports: Five cases from televised tennis competitions, Am J Sports Med, 40, 11, pp. 2627-2632, (2012); Grood E.S., Suntay W.J., A joint coordination system for the clinical description of three-dimensional motions: Application to the knee, J Biomech Eng, 105, pp. 136-144, (1983); Henriksen M., Lund H., Moe-Nilssen R., Bliddal H., Danneskiod-Samse B., Test-retest reliability of trunk accelerometric gait analysis, Gait Posture, 19, 3, pp. 288-297, (2004); Hewett T.E., Torg J.S., Boden B.P., Video analysis of trunk and knee motion during non-contact anterior cruciate ligament injury in female athletes: Lateral trunk and knee abduction motion are combined components of the injury mechanism, Br J Sports Med, 43, 6, pp. 417-422, (2009); Koga H., Nakamae A., Shima Y., Iwasa J., Myklebust G., Engebretsen L., Bahr R., Krosshaug T., Am J Sports Med, 38, 11, pp. 2218-2225, (2010); Koga H., Bahr R., Myklebust G., Engebretsen L., Grund T., Krosshaug T., Estimating anterior tibial translation from model-based image-matching of a noncontact anterior cruciate ligament injury in professional football: A case report, Clin J Sport Med, 21, 3, pp. 271-274, (2011); Kristianslund E., Faul O., Bahr R., Myklebust G., Krosshaug T., Sidestep cutting technique and knee abduction loading: Implications for ACL prevention exercises, Br J Sports Med, 48, 9, pp. 779-783, (2014); Krosshaug T., Bahr R., A model-based image-matching technique for three-dimensional reconstruction of human motion from uncalibrated video sequences, J Biomech, 38, 4, pp. 919-929, (2005); Krosshaug T., Slauterbeck J.R., Engebretsen L., Bahr R., Biomechanical analysis of anterior cruciate ligament injury mechanisms: Three-dimensional motion reconstruction from video sequences, Scand J Med Sci Sports, 5, pp. 508-519, (2007); Krosshaug T., Nakamae A., Boden B., Engebresten L., Smith G., Slauterbeck J., Hewett T.E., Bahr R., Estimating 3D kinematics from video sequences of running and cutting maneuvers - Assessing the accuracy of simple visual inspection, Gait Posture, 26, 3, pp. 378-385, (2007); Krosshaug T., Nakamae A., Boden B.P., Engebretsen L., Smith G., Slauterbeck J.R., Hewett T.E., Bahr R., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, Am J Sports Med, 35, 3, pp. 359-367, (2007); Leetun D.T., Ireland M.L., Willson J.D., Ballantyne B.T., Davis I.M., Core stability measures as risk factors for lower extremity injury in athletes, Med Sci Sports Exerc, 36, 6, pp. 926-934, (2004); McLean S.G., Lipfert S.W., Van Den Bogert A.J., Effect of gender and defensive opponent on the biomechanics of sidestep cutting, Med Sci Sports Exerc, 36, 6, pp. 1008-1016, (2004); Mok K.M., Fong D.T., Krosshaug T., Engebretsen L., Hung A.S., Yung P.S., Chan K.M., Kinematics analysis of ankle inversion ligamentous sprain injuries in sports: 2 cases during the 2008 Beijing Olympics, Am J Sports Med, 39, 7, pp. 1548-1552, (2011); Moran K.A., Marshall B.M., Effect of fatigue on tibial impact accelerations and knee kinematics in drop jumps, Med Sci Sports Exerc, 38, 10, pp. 1836-1842, (2006); Nagano Y., Ida H., Akai M., Fukubayashi T., Relationship between three-dimensional kinematics of knee and trunk motion during shuttle run cutting, J Sports Sci, 29, 14, pp. 1525-1534, (2011); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med, 32, 4, pp. 1002-1012, (2004); Pollard C.D., Sigward S.M., Powers C.M., Gender differences in hip joint kinematics and kinetics during sidestep cutting maneuver, Clin J Sport Med, 17, 1, pp. 38-42, (2007); Sasaki S., Koga H., Krosshaug T., Sakurai T., Fukubayashi T., A biomechanical approach to evaluating field sports performance using a model-based image-matching technique: A case report of 4 defensive football game situations, Gazz Med Ital, 172, 10, pp. 799-805, (2013); Sheehan F.T., Sipprell W.H., Boden B.P., Dynamic sagittal plane trunk control during anterior cruciate ligament injury, Am J Sports Med, 40, 5, pp. 1068-1074, (2012); Shimokochi Y., Ide D., Kokubu M., Nakaoji T., Relationships among performance of lateral cutting maneuver from lateral sliding and hip extension and abduction motions, ground reaction force, and body center of mass height, J Strength Cond Res, 27, 7, pp. 1851-1860, (2013); Stearns K.M., Keim R.G., Powers C.M., Influence of relative hip and knee extensor muscle strength on landing biomechanics, Med Sci Sports Exerc, 45, 5, pp. 935-941, (2013); Wheeler K.W., Sayers M.G., Modification of agility running technique in reaction to a defender in rugby union, J Sports Sci Med, 9, 3, pp. 445-451, (2010); Woltring H.G., A Fortran package for generalized, cross-validatory spline smoothing and differentiation, Adv Eng Software, 8, pp. 104-113, (1986)","S. Sasaki; Faculty of Health Sciences, Tokyo Ariake University of Medical and Health Sciences, Koto-ku, Tokyo, 2-9-1 Ariake, 135-0063, Japan; email: sasaki@tau.ac.jp","","Polish Academy of Science, Committee of Physical Culture","16405544","","","","English","J. Hum. Kinet.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-84937807281" "Pefanis N.; Karagounis P.; Tsiganos G.; Armenis E.; Baltopoulos P.","Pefanis, Nikolaos (35337612700); Karagounis, Panagiotis (6505599553); Tsiganos, Georgios (6504801642); Armenis, Elias (35268157100); Baltopoulos, Panagiotis (6603082691)","35337612700; 6505599553; 6504801642; 35268157100; 6603082691","Tibiofemoral Angle and Its Relation to Ankle Sprain Occurrence","2009","Foot & Ankle Specialist","2","6","","271","276","5","5","10.1177/1938640009349502","https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954921549&doi=10.1177%2f1938640009349502&partnerID=40&md5=f0dd7f9a484f2c407c95c2d8f4a292b5","Laboratory of Functional Anatomy and Sports Medicine, Department of Physical Education and Sports Science, University of Athens, Greece; Department of Sports Medicine and Biology of Physical Activity, Department of Physical Education and Sports Science, University of Athens, Greece","Pefanis N., Laboratory of Functional Anatomy and Sports Medicine, Department of Physical Education and Sports Science, University of Athens, Greece; Karagounis P., Laboratory of Functional Anatomy and Sports Medicine, Department of Physical Education and Sports Science, University of Athens, Greece; Tsiganos G., Department of Sports Medicine and Biology of Physical Activity, Department of Physical Education and Sports Science, University of Athens, Greece; Armenis E., Laboratory of Functional Anatomy and Sports Medicine, Department of Physical Education and Sports Science, University of Athens, Greece; Baltopoulos P., Laboratory of Functional Anatomy and Sports Medicine, Department of Physical Education and Sports Science, University of Athens, Greece","The lack of a normal joint orientation generates translational or shear forces across the joint. These forces can put abnormally high strain on the cartilage and the surrounding capsuloligamentous tissues. Ankle joint structure can affect or be affected by bony malformations of the surrounding areas, including the knee and hip. The aim of the current study is to examine the possible relationship between the tibiofemoral (TFA) angle and other factors (anthropometric characteristics, medical history, and age) on the occurrence of ankle sprains because its value provides useful information for the anatomical alignment of the lower extremity. The study sample consisted of 45 high-level athletes, evenly distributed among 3 sports (basketball, soccer, and volleyball). TFA measurements were made on radiographs. The study lasted 2 years. A logistic regression was used to determine the importance of each factor on the probability in question. A significance level of P = .1 was used. The factors contributing more to an ankle sprain were a previous injury of the same type followed by body mass index (BMI) and age. On the contrary, TFA was proven to be statistically nonsignificant. When the BMI variable was substituted with body inertia propensity, a derived variable, the TFA remained statistically nonsignificant. TFA magnitude does not seem to be a determinant factor that could increase the probability of spraining an ankle. © 2009, SAGE Publications. All rights reserved.","anatomic alignment; ankle sprain; body mass index; body mass moment of inertia; injury risk factors; tibiofemoral angle","Adolescent; Adult; Ankle Injuries; Athletic Injuries; Biomechanics; Body Mass Index; Humans; Knee Joint; Male; Prospective Studies; Risk Factors; Sprains and Strains; Young Adult; adolescent; adult; ankle injury; article; biomechanics; body mass; histology; human; injury; knee; male; prospective study; risk factor; sport injury","Munn J., Beard D.J., Refshauge K.M., Et al., Eccentric muscle strength in functional ankle instability, Med Sci Sports Exerc, 35, pp. 245-250, (2003); Riley P.O., Della C.U., Kerrigan C.D., Propulsive adaption to changing gait speed, J Biomech, 34, pp. 197-202, (2001); Kettelkamp D.B., Hillberry B.M., Murrish D.E., Heck D.A., Degenerative arthritis of the knee secondary to fracture malunion, Clin Orthop, 234, (1988); Green S.T., Patellofemoral syndrome, J Bodyw Mov Ther, 9, pp. 16-26, (2003); Glimet T., Masse J.P., Ryckwaert A., Etude radiologique des genoux indolores de 50 hommes de plus 65 ans, J Radiol, 61, pp. 509-510, (1980); 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Maehlum S., Daljord O.A., Acute sports injury in Oslo: a one year study, Br J Sports Med, 18, pp. 181-185, (1984); Fong D., Tik-P H.Y., Chan L., Et al., A systematic review on ankle injury and ankle sprain in sports, Sports Med, 37, pp. 73-94, (2007); McKay G.D., Payne W.R., Goldie P.A., A comparison of the injuries sustained by female basketball and netball players, Aust J Sci Med Sport, 28, pp. 12-17, (1996); Garrick J.G., The frequency of injury, mechanism of injury, and epidemiology of ankle sprains, Am J Sports Med, 5, pp. 241-242, (1977); Giza E., Fuller C., Junge A., Et al., Mechanisms of foot and ankle injuries in soccer, Am J Sports Med, 31, pp. 550-554, (2003); Williams J.G.P., Aetiologic classification of sports injuries, Br J Sports Med, 4, pp. 228-230, (1971); Taimela S., Kujala U.M., Osterman K., Intrinsic risk factors and athletic injuries, Sports Med, 9, pp. 205-215, (1990); Freeman M.A.R., Dean M.R.E., Hanham W.F., The etiology and prevention of functional instability of the foot, J Bone Joint Surg, 47B, pp. 678-685, (1965); Smith R.W., Reischl S.F., Treatment of ankle sprains in young athletes, Am J Sports Med, 14, pp. 465-471, (1968); Lentell G., Baas B., Lopez D., McGuire L., Sarrels M., Synder P., The contributions of proprioceptive deficits, muscle function, and anatomic laxity to functional instability of the ankle, J Orthop Sports Phys Ther, 21, pp. 206-215, (1995); Hopper D.M., Hopper J.L., Elliott B.C., Do selected kinanthropometric and performance variables predict injuries in female netball players?, J Sports Sci, 13, pp. 213-222, (1995); Beynnon B., Renstrom P.A., Alosa D.M., Et al., Ankle ligament injury risk factors: a prospective study of college athletes, J Orthop Res, 19, pp. 213-220, (2001); Ostenberg A., Roos H., Injury risk factors in female European football: a prospective study of 123 players during one season, Scand J Med Sci Sports, 10, pp. 279-285, (2000); Knapik J.J., Sharp M.A., Canham-Chervak M., Risk factors for training-related injuries among men and women in basic combat training, Med Sci Sports Exerc, 33, pp. 946-954, (2001); Milgrom C., Shlamkovitch N., Finestone A., Risk factors for lateral ankle sprain: a prospective study among military recruits, Foot Ankle, 12, pp. 26-30, (1991); Pefanis N., Papaharalampous X., Tsiganos G., Papadakou E., Baltopoulos P., The effect of q angle on ankle sprain occurrence, Foot Ankle Spec., 2, 1, pp. 22-26, (2009); Arazi M., Ogun T.C., Memik R., Normal development of the tibiofemoral angle in children: a clinical study of 590 normal subjects from 3 to 17 years of age, J Pediatr Orthop, 21, pp. 264-267, (2001); Culik J., Marik I., Force effect of orthosis with high prestress to femur and tibia [in Czech], Locomotor System, 8, 2, pp. 74-81, (2001); Culik J., Marik I., Nomograms for definition of tibiofemoral angle [in Czech], Locomotor System, 8, 3-4, pp. 81-89, (2002); Sitler M.R., Ryan J., Wheeler B., The efficacy of a semirigid ankle stabilizer to reduce acute ankle injuries in basketball: a randomized clinical study at West Point, Am J Sports Med, 22, pp. 454-461, (1994); 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Dvorak J., Junge A., Chomiak J., Et al., Risk factor analysis for injuries in football players: possibilities for a prevention program, Am J Sports Med, 28, 5, pp. S69-S74, (2000); Beynnon B.D., Vacek P.M., Murphy D., First-time inversion ankle ligament trauma: the effects of sex, level of competition, and sport on the incidence of injury, Am J Sports Med, 33, pp. 1485-1491, (2005); Beynnon B., Darlene D., Murphy F., Et al., Predictive factors for lateral ankle sprains: a literature review, J Athl Train, 37, pp. 376-380, (2002); Surve I., Schwellnus M.P., Noakes T., Et al., A fivefold reduction in the incidence of recurrent ankle sprains in soccer players using the Sport-Stirrup orthosis, Am J Sports Med, 22, pp. 601-606, (1994); Verhagen E.A., Van D.B., Bouter L.M., Et al., A one season prospective cohort study of volleyball injuries, Br J Sports Med, 38, pp. 477-481, (2004); Ekstrand J., Gillquist J., Soccer injuries and their mechanisms: a prospective study, Med Sci Sports Exerc, 15, pp. 267-270, (1983); Barrett J.R., Tanji J.L., Drake C., Et al., High versus low-top shoes for the prevention of ankle sprains in basketball players: a prospective randomized study, Am J Sports Med, 21, pp. 582-585, (1993); Baumhauer J.F., Alosa D.M., Renstrom A.F., Et al., A prospective study of ankle injury risk factors, Am J Sports Med, 23, pp. 564-570, (1995); Murphy D.F., Connolly D., Beynnon B.D., Risk factors for lower extremity injury: a review of the literature, Br J Sports Med, 37, pp. 13-29, (2002); Peterson L., Junge A., Chomiak J., Incidence of football injuries and complaints in different age groups and skill-level groups, Am J Sports Med, 28, pp. S51-S57, (2000); Chomiak J., Junge A., Peterson L., Severe injuries in football players influencing factors, Am J Sports Med, 28, pp. S58-S68, (2000); Soderman K., Alfredson H., Pietila T., Risk factors for leg injuries in female soccer players: a prospective investigation during one out-door season, Knee Surg Sports Traumatol Athrosc, 9, pp. 313-321, (2001); Tyler T.F., McHugh M.P., Mirabella M.R., Et al., Risk factors for noncontact ankle sprains in high school football players: the role of previous ankle sprains and body mass index, Am J Sports Med, 34, pp. 471-475, (2006); Willems T.M., Witvrouw E., Delbaere K., Et al., Intrinsic risk factors for inversion ankle sprains in male subjects: a prospective study, Am J Sports Med, 33, pp. 415-423, (2005)","","","","19386400","","","20400424","English","Foot Ankle Spec.","Article","Final","","Scopus","2-s2.0-77954921549" "Delvaux F.; Schwartz C.; Rodriguez C.; Forthomme B.; Kaux J.-F.; Croisier J.-L.","Delvaux, François (8255510000); Schwartz, Cédric (23975098700); Rodriguez, Carlos (57217118549); Forthomme, Bénédicte (7801345414); Kaux, Jean-François (16425976600); Croisier, Jean-Louis (56245079700)","8255510000; 23975098700; 57217118549; 7801345414; 16425976600; 56245079700","Preseason assessment of anaerobic performance in elite soccer players: comparison of isokinetic and functional tests","2023","Sports Biomechanics","22","5","","689","703","14","6","10.1080/14763141.2020.1750681","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086330430&doi=10.1080%2f14763141.2020.1750681&partnerID=40&md5=823570704722bcf2b1809c47dbcaff45","Department of Physical Medicine and Rehabilitation, University of Liege, Liege, Belgium; Laboratory of Human Motion Analysis, University of Liege, Liege, Belgium","Delvaux F., Department of Physical Medicine and Rehabilitation, University of Liege, Liege, Belgium, Laboratory of Human Motion Analysis, University of Liege, Liege, Belgium; Schwartz C., Department of Physical Medicine and Rehabilitation, University of Liege, Liege, Belgium, Laboratory of Human Motion Analysis, University of Liege, Liege, Belgium; Rodriguez C., Department of Physical Medicine and Rehabilitation, University of Liege, Liege, Belgium; Forthomme B., Department of Physical Medicine and Rehabilitation, University of Liege, Liege, Belgium, Laboratory of Human Motion Analysis, University of Liege, Liege, Belgium; Kaux J.-F., Department of Physical Medicine and Rehabilitation, University of Liege, Liege, Belgium; Croisier J.-L., Department of Physical Medicine and Rehabilitation, University of Liege, Liege, Belgium, Laboratory of Human Motion Analysis, University of Liege, Liege, Belgium","Isokinetic and functional jump tests are frequently performed for assessing the physical qualities of soccer players during preseason. The purpose of this investigation was to explore, in an elite soccer players population, the relationships between isokinetic strength and functional jump performances. Thirty-eight professional soccer players were evaluated as follows: isokinetic knee assessment in concentric (CON) mode (60, 240°/s) for quadriceps and hamstrings, and in eccentric (ECC) mode for the hamstrings only (30°/s); one-leg hop tests for distance (single hop (SH), triple hop (TH) and triple crossover hop (TCH)); one-leg vertical jump tests (countermovement jump, drop jump). Players with a low bodyweight normalised (BWN) quadriceps (Q) strength (<2.71 Nm/kg) performed, for a majority of the measured variables, significantly reduced jump performances compared to the players with high BWN Q strength (>3.14 Nm/kg; p < 0.05). Greater bilateral differences between uninjured and past injured lower limbs were found with isokinetics (Q CON 60°/s (mean bilateral difference (MBD): 10.3%; p < 0.01), Q CON 240°/s (MBD: 9.9%; p < 0.05), H ECC 30°/s (MBD: 16.1%; p < 0.001) than with functional tests (MBD: 2 to 9%; p > 0.05. In conclusion, due to their complementary role and implications for performance, functional and isokinetic tests should be associated in a preseason soccer players assessment. © 2020 Informa UK Limited, trading as Taylor & Francis Group.","high-level soccer; hop tests; jump tests; Muscle strength","Anaerobiosis; Biomechanical Phenomena; Humans; Knee Joint; Muscle Strength; Muscle, Skeletal; Soccer; article; body weight; controlled study; hamstring muscle; human; knee; muscle strength; muscle training; quadriceps femoris muscle; soccer player; anaerobic growth; biomechanics; knee; muscle strength; skeletal muscle; soccer","Bangsbo J., Mohr M., Krustrup P., Physical and metabolic demands of training and match-play in the elite football player, Journal of Sports Sciences, 24, pp. 665-674, (2006); Barber S.D., Noyes F.R., Mangine R.E., McCloskey J.W., Hartman W., Quantitative assessment of functional limitations in normal and anterior cruciate ligament-deficient knees, Clinical Orthopaedics and Related Research, pp. 204-214, (1990); Barber-Westin S.D., Noyes F.R., Objective criteria for return to athletics after anterior cruciate ligament reconstruction and subsequent reinjury rates: A systematic review, The Physician and Sportsmedicine, 39, pp. 100-110, (2011); Bogdanis G.C., Kalapotharakos V.I., Knee extension strength and hamstrings-to-quadriceps imbalances in elite soccer players, International Journal of Sports Medicine, 37, pp. 119-124, (2016); Cometti G., Maffiuletti N.A., Pousson M., Chatard J.C., Maffulli N., Isokinetic strength and anaerobic power of elite, subelite and amateur French soccer players, International Journal of Sports Medicine, 22, pp. 45-51, (2001); Coratella G., Bellin G., Beato M., Schena F., Fatigue affects peak joint torque angle in hamstrings but not in quadriceps, Journal of Sports Sciences, 33, pp. 1276-1282, (2015); Croisier J.-L., Forthomme B., Namurois M.-H., Vanderthommen M., Crielaard J.-M., Hamstring muscle strain recurrence and strength performance disorders, The American Journal of Sports Medicine, 30, pp. 199-203, (2002); Croisier J.-L., Ganteaume S., Binet J., Genty M., Ferret J.-M., Strength imbalances and prevention of hamstring injury in professional soccer players: A prospective study, The American Journal of Sports Medicine, 36, pp. 1469-1475, (2008); Dauty M., Menu P., Fouasson-Chailloux A., Cutoffs of isokinetic strength ratio and hamstring strain prediction in professional soccer players, Scandinavian Journal of Medicine & Science in Sports, 28, pp. 278-281, (2018); Dauty M., Menu P., Fouasson-Chailloux A., Hamstring muscle injury prediction by isokinetic ratios depends on the method used, Clinical Journal of Sport Medicine, (2020); Dauty M., Menu P., Fouasson-Chailloux A., Ferreol S., Dubois C., Prediction of hamstring injury in professional soccer players by isokinetic measurements, Muscles, Ligaments and Tendons Journal, 6, pp. 116-123, (2016); Dobbs C.W., Gill N.D., Smart D.J., McGuigan M.R., Relationship between vertical and horizontal jump variables and muscular performance in athletes, Journal of Strength and Conditioning Research, 29, pp. 661-671, (2015); Ekstrand J., Hagglund M., Walden M., Epidemiology of muscle injuries in professional football (soccer), The American Journal of Sports Medicine, 39, pp. 1226-1232, (2011); Ekstrand J., Walden M., Hagglund M., Hamstring injuries have increased by 4% annually in men’s professional football since 2001: A 13-year longitudinal analysis of the UEFA Elite Club injury study, British Journal of Sports Medicine, 50, pp. 731-737, (2016); Greenberger H.B., Paterno M.V., Relationship of knee extensor strength and hopping test performance in the assessment of lower extremity function, The Journal of Orthopaedic and Sports Physical Therapy, 22, pp. 202-206, (1995); Grygorowicz M., Michalowska M., Walczak T., Owen A., Grabski J.K., Pyda A., Piontek T., Kotwicki T., Discussion about different cut-off values of conventional hamstring-to-quadriceps ratio used in hamstring injury prevention among professional male football players, PLoS One, 7, (2017); Hamilton R.T., Shultz S.J., Schmitz R.J., Perrin D.H., Triple-hop distance as a valid predictor of lower limb strength and power, Journal of Athletic Training, 43, pp. 144-151, (2008); Impellizzeri F.M., Rampinini E., Maffiuletti N., Marcora S.M., A vertical jump force test for assessing bilateral strength asymmetry in athletes, Medicine and Science in Sports and Exercise, 39, pp. 2044-2050, (2007); Jones P.A., Bampouras T.M., A comparison of isokinetic and functional methods of assessing bilateral strength imbalance, Journal of Strength and Conditioning Research, 24, pp. 1553-1558, (2010); Kvist J., Rehabilitation following anterior cruciate ligament injury: Current recommendations for sports participation, Sports Medicine, 34, pp. 269-280, (2004); Kyritsis P., Bahr R., Landreau P., Miladi R., Witvrouw E., Likelihood of ACL graft rupture: Not meeting six clinical discharge criteria before return to sport is associated with a four times greater risk of rupture, British Journal of Sports Medicine, 50, pp. 946-951, (2016); Lehance C., Binet J., Bury T., Croisier J.L., Muscular strength, functional performances and injury risk in professional and junior elite soccer players, Scandinavian Journal of Medicine & Science in Sports, 19, pp. 243-251, (2009); Lockie R.G., Callaghan S.J., Berry S.P., Cooke E.R.A., Jordan C.A., Luczo T.M., Jeffriess M.D., Relationship between unilateral jumping ability and asymmetry on multidirectional speed in team-sport athletes, Journal of Strength and Conditioning Research, 28, pp. 3557-3566, (2014); Loturco I., Pereira L.A., Cal Abad C.C., D'Angelo R.A., Fernandes V., Kitamura K., Nakamura F.Y., Vertical and horizontal jump tests are strongly associated with competitive performance in 100-m Dash events, Journal of Strength and Conditioning Research, 29, pp. 1966-1971, (2015); Menzel H.-J., Chagas M.H., Szmuchrowski L.A., Araujo S.R.S., de Andrade A.G.P., de Jesus-moraleida F.R., Analysis of lower limb asymmetries by isokinetic and vertical jump tests in soccer players, Journal of Strength and Conditioning Research, 27, pp. 1370-1377, (2013); Newton R.U., Gerber A., Nimphius S., Shim J.K., Doan B.K., Robertson M., Kraemer W.J., Determination of functional strength imbalance of the lower extremities, Journal of Strength and Conditioning Research, 20, pp. 971-977, (2006); 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Ross M.D., Langford B., Whelan P.J., Test-retest reliability of 4 single-leg horizontal hop tests, Journal of Strength and Conditioning Research, 16, pp. 617-622, (2002); Ruas C.V., Minozzo F., Pinto M.D., Brown L.E., Pinto R.S., Lower-extremity strength ratios of professional soccer players according to field position, Journal of Strength and Conditioning Research, 29, pp. 1220-1226, (2015); Schwartz C., Forthomme B., Paulus J., Kaux J.-F., Bruls O., Denoel V., Croisier J.-L., Reliability of unipodal and bipodal counter movement jump landings in a recreational male population, European Journal of Sport Science, 1, pp. 1143-1152, (2017); Thomee R., Kaplan Y., Kvist J., Myklebust G., Risberg M.A., Theisen D., Witvrouw E., Muscle strength and hop performance criteria prior to return to sports after ACL reconstruction, Knee Surgery, Sports Traumatology, Arthroscopy, 19, pp. 1798-1805, (2011); van Dyk N., Bahr R., Whiteley R., Tol J.L., Kumar B.D., Hamilton B., Witvrouw E., Hamstring and quadriceps isokinetic strength deficits are weak risk factors for hamstring strain injuries: A 4-year cohort study, The American Journal of Sports Medicine, 44, pp. 1789-1795, (2016); Wisloff U., Castagna C., Helgerud J., Jones R., Hoff J., Strong correlation of maximal squat strength with sprint performance and vertical jump height in elite soccer players, British Journal of Sports Medicine, 38, pp. 285-288, (2004); Zvijac J.E., Toriscelli T.A., Merrick S., Kiebzak G.M., Isokinetic concentric quadriceps and hamstring strength variables from the NFL Scouting combine are not predictive of hamstring injury in first-year professional football players, The American Journal of Sports Medicine, 41, pp. 1511-1518, (2013)","F. Delvaux; Department of Physical Medicine and Rehabilitation, University of Liege, Liege, Belgium; email: fdelvaux@uliege.be","","Routledge","14763141","","","32460644","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-85086330430" "Severin A.C.; Mellifont D.B.; Sayers M.G.L.","Severin, Anna C. (57195263846); Mellifont, Daniel B. (55321381600); Sayers, Mark G. L. (36128060500)","57195263846; 55321381600; 36128060500","Influence of previous groin pain on hip and pelvic instep kick kinematics","2017","Science and Medicine in Football","1","1","","80","85","5","6","10.1080/02640414.2016.1221527","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85052737216&doi=10.1080%2f02640414.2016.1221527&partnerID=40&md5=38457c53d307ec81c7e50e28caf1cc13","School of Health and Sports Sciences, University of the Sunshine Coast, Maroochydore, QLD, Australia","Severin A.C., School of Health and Sports Sciences, University of the Sunshine Coast, Maroochydore, QLD, Australia; Mellifont D.B., School of Health and Sports Sciences, University of the Sunshine Coast, Maroochydore, QLD, Australia; Sayers M.G.L., School of Health and Sports Sciences, University of the Sunshine Coast, Maroochydore, QLD, Australia","This study analyzed differences in pelvic and hip joint kinematics during maximal instep kicks from two different approach angles in football players with and without previous groin pain (Group C and PGP Group, respectively). Kinematic data were recorded at 500 Hz, from 22 semiprofessional, male football players (age 23 [19–26] years) performing 12 instep kicks from 45° and 60° approach angles. Two-way analysis of variance identified differences between groups, and Cohen’s d determined the magnitude of effect sizes. Foot velocity at impact did not differ significantly between the groups for kicks from the 45° approach angle (P = 0.458, d = 0.13), although both groups slowed significantly at 60° (Group C: P < 0.001, d = 0.87; PGP Group: P < 0.001, d = 0.65). For kicks from the 45° approach angle, numerous significant differences existed between groups in pelvic and hip joint orientations, range of motion and maximal velocities. When kicking from the more acute 60° approach angle, Group C modified multiple aspects of pelvis and hip kinematics, while the PGP Group failed to adapt their technique. During maximal instep, kicking football players with previous groin pain employed different hip and pelvis kinematics to uninjured controls. The kicking kinematics adopted by the PGP group were consistent with aberrant kinetic chain utilization. Practical Implications: Previous research has associated the football kicking action with groin pain. Simple outcome measures like instep kicking velocity and ability to play appear unable to identify footballers with a history of groin pain. Not only do footballers with a history of groin pain kick with aberrant hip and pelvis motion, they also demonstrate limited ability to adapt to a more challenging approach angle when instep kicking. © 2016, © 2016 Informa UK Limited, trading as Taylor & Francis Group.","biomechanics; football; Groin injury; lower limb; soccer","","Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, J Sports Sci, 24, pp. 951-960, (2006); Asai T., Carre M., Akatsuka T., Haake S., The curve kick of a football I: impact with the foot, Sports Eng, 5, pp. 183-192, (2002); Brophy R.H., Backus S.I., Pansy B.S., Lyman S., Williams R.J., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, J Orthop Sports Phys Ther, 37, pp. 260-268, (2007); Brughelli M., Cronin J., Mendiguchia J., Kinsella D., Nosaka K., Contralateral leg deficits in kinetic and kinematic variables during running in Australian rules football players with previous hamstring injuries, J Strength Cond Res, 24, pp. 2539-2544, (2010); Cetin C., Sekir U., Yildiz Y., Aydin T., Ors F., Kalyon T.A., Chronic groin pain in an amateur soccer player, Br J Sports Med, 38, pp. 223-224, (2004); Coffey N., Harrison A.J., Donoghue O.A., Hayes K., Common functional principal components analysis: A new approach to analyzing human movement data, Hum Mov Sci, 30, pp. 1144-1166, (2011); Cohen J., Statistical power analysis for the behavioral sciences, (1988); Davids K., Glazier P., Araujo D., Bartlett R., Movement systems as dynamical systems - the functional role of variability and its implications for sports medicine, Sports Med, 33, pp. 245-260, (2003); Davids K., Lees A., Burwitz L., Understanding and measuring coordination and control in kicking skills in soccer: implications for talent identification and skill acquisition, J Sports Sci, 18, pp. 703-714, (2000); Dichiera A., Webster K.E., Kuilboer L., Morris M.E., Bach T.M., Feller J.A., Kinematic patterns associated with accuracy of the drop punt kick in Australian Football, J Sci Med Sport, 9, pp. 292-298, (2006); Dorge H.C., Anderson T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, J Sports Sci, 20, pp. 293-299, (2002); Edwards S., Brooke H.C., Cook J.L., Distinct cut task strategy in Australian football players with a history of groin pain, Phys Ther Sport, (2016); Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: the UEFA injury study, Br J Sports Med, 45, pp. 553-558, (2011); Esteve E., Rathleff M.S., Bagur-Calafat C., Urrutia G., Thorborg K., Prevention of groin injuries in sports: a systematic review with meta-analysis of randomised controlled trials, Br J Sports Med, 49, pp. 785-791, (2015); Graven-Nielsen T., Svensson P., Arendt-Nielsen L., Effect of muscle pain on motor control: A human experimental approach, Adv Physiother, 2, pp. 26-38, (2000); Holmich P., Larsen K., Krogsgaard K., Gluud C., Exercise program for prevention of groin pain in football players: a cluster-randomized trial, Scand J Med Sci Sports, 20, pp. 814-821, (2010); Holmich P., Thorborg K., Dehlendorff C., Krogsgaard K., Gluud C., Incidence and clinical presentation of groin injuries in sub-elite male soccer, Br J Sports Med, 48, pp. 1245-1250, (2014); Holmich P., Uhrskou P., Ulnits L., Kanstrup I.L., Nielsen M.B., Bjerg A.M., Krogsgaard K., Effectiveness of active physical training as treatment for longstanding adductor-related groin pain in athletes: randomised trial, Lancet, 353, pp. 439-443, (1999); Inoue K., Nunome H., Sterzing T., Shinkai H., Ikegami Y., Dynamics of the support leg in soccer instep kicking, J Sports Sci, (2014); Kawamoto R., Miyagi O., Ohashi J., Fukashiro S., Kinetic comparison of a side-foot soccer kick between experienced and inexperienced players, Sports Biomech, 6, pp. 187-198, (2007); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Med Sci Sports Exerc, 36, pp. 1017-1028, (2004); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: a review, J Sports Sci, 28, pp. 805-817, (2010); 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Sayers M., Morris J., The role of the axial skeleton during rugby union punt kicking, Science in Football VII, pp. 55-60, (2013); Schache A.G., Blanch P.D., Murphy A.T., Relation of anterior pelvic tilt during running to clinical and kinematic measures of hip extension, Br J Sports Med, 34, pp. 279-283, (2000); Scurr J., Hall B., The effects of approach angle on penalty kicking accuracy and kick kinematics with recreational soccer players, J Sports Sci Med, 8, pp. 230-234, (2009); Shinkai H., Nunome H., Isokawa M., Ikegami Y., Ball impact dynamics of instep soccer kicking, Med Sci Sports Exerc, 41, pp. 889-897, (2009); Silder A., Thelen D.G., Heiderscheit B.C., Effects of prior hamstring strain injury on strength, flexibility, and running mechanics, Clin Biomech (Bristol, Avon), 25, pp. 681-686, (2010); Weir A., Brukner P., Delahunt E., Ekstrand J., Griffin D., Khan K.M., Doha agreement meeting on terminology and definitions in groin pain in athletes, Br J Sports Med, 49, pp. 768-774, (2015); Werner J., Hagglund M., Walden M., Ekstrand J., UEFA injury study: a prospective study of hip and groin injuries in professional football over seven consecutive seasons, Br J Sports Med, 43, pp. 1036-1040, (2009)","A.C. Severin; School of Health and Sports Sciences, University of the Sunshine Coast, Maroochydore, Australia; email: aseverin@usc.edu.au","","Taylor and Francis Ltd.","24733938","","","","English","Sci. Med. Footb.","Article","Final","","Scopus","2-s2.0-85052737216" "Freiwald J.; Baumgart C.; Hoppe M.W.; Slomka M.; Brexendorf B.; Partenheimer A.; Blume R.","Freiwald, Jürgen (6701468045); Baumgart, Christian (15021681900); Hoppe, Matthias W. (37561282400); Slomka, Mirko (15023384500); Brexendorf, Bernd (36706999400); Partenheimer, Axel (6602646816); Blume, Ralf (58335463100)","6701468045; 15021681900; 37561282400; 15023384500; 36706999400; 6602646816; 58335463100","Return to Sport after Injuries in High Level Soccer - analysis of needs; [Return to Sport nach Verletzungen im Hochleistungsfußball - was ist dazu notwendig?]","2013","Sport-Orthopadie - Sport-Traumatologie","29","1","","4","12","8","5","10.1016/j.orthtr.2013.02.039","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878016522&doi=10.1016%2fj.orthtr.2013.02.039&partnerID=40&md5=10a82e722232be4d4891f0238ca7143d","Bergische Universität - Arbeitsbereich Bewegungswissenschaft - Wuppertal, Forschungszentrum für Leistungsdiagnostik und Trainingsberatung (FLT), Germany; Hannoverscher Sportverein von 1896 e.V., Germany; Evangelisches Diakoniekrankenhaus Friederikenstift Hannover, Germany","Freiwald J., Bergische Universität - Arbeitsbereich Bewegungswissenschaft - Wuppertal, Forschungszentrum für Leistungsdiagnostik und Trainingsberatung (FLT), Germany, Hannoverscher Sportverein von 1896 e.V., Germany; Baumgart C., Bergische Universität - Arbeitsbereich Bewegungswissenschaft - Wuppertal, Forschungszentrum für Leistungsdiagnostik und Trainingsberatung (FLT), Germany; Hoppe M.W., Bergische Universität - Arbeitsbereich Bewegungswissenschaft - Wuppertal, Forschungszentrum für Leistungsdiagnostik und Trainingsberatung (FLT), Germany; Slomka M., Hannoverscher Sportverein von 1896 e.V., Germany; Brexendorf B., Hannoverscher Sportverein von 1896 e.V., Germany; Partenheimer A., Hannoverscher Sportverein von 1896 e.V., Germany, Evangelisches Diakoniekrankenhaus Friederikenstift Hannover, Germany; Blume R., Hannoverscher Sportverein von 1896 e.V., Germany","The aim of the present article was to describe the personnel, structural, and organizational prerequisites of injured professional soccer players, which are necessary to return to sport without recidivisms. Therefore, notions and particularities in medicine and physiotherapy, e.g. the interpretation of blood values and imaging methods (MRT), will be defined. Additionally, we mention the particularities for coaches, physicians, trainers, and physiotherapists and describe exemplary rehabilitative processes. Finally, we highlight trends in biomechanics, genetics, nutrition, medicine, strength and conditioning, and physiotherapy. © 2013.","Genetic; Injuries; Physiotherapy; Rehabilitation; Soccer; Sports science","article; biomechanics; genetics; nutrition; physician; physiotherapist; physiotherapy; recidivism; soccer; sport injury; strength","Appleton C.T., McErlain D.D., Pitelka V., Schwartz N., Bernier S.M., Henry J.L., Beier F., Forced mobilization accelerates pathogenesis: characterization of a preclinical surgical model of osteoarthritis, Arthritis Res Ther, 9, 1, (2007); Armatas V., Pollard R., Home advantage in Greek football, European Journal of Sport Science, pp. 1-7, (2012); Benardot D., Advanced sports nutrition, (2012); Benton M.J., Kasper M.J., Raab S.A., Waggener G.T., Swan P.D., Short-term effects of resistance training frequency on body composition and strength in middle-aged women, J Strength Cond Res, 25, 11, pp. 3142-3149, (2011); Burke L., Practical sports nutrition, (2007); Campbell B.I., Spano M.A., NSCA's guide to sport and exercise nutrition, (2011); Engelhardt M., Sportverletzungen - Diagnose, Managment und Begleitmaßnahmen, (2009); Freiwald J., Rehabilitation after athletic injuries, Sport Orthopedics, pp. 687-709, (2011); Freiwald J., Baumgart C., Jansen C.T., Hoppe M.W., Slomka M., Ausgewählte Aspekte der Betreuung in der Fußball-Bundesliga der Männer, Schriften der Deutschen Vereinigung für Sportwissenschaft, pp. 174-179, (2012); Freiwald J., Papadopoulos C., Slomka M., Bizzini M., Baumgart C., Prävention im Fußballsport, SportOrthoTrauma, 22, pp. 140-150, (2006); Havercamp S.M., Reiss S., A comprehensive assessment of human strivings: test-retest reliability and validity of the Reiss Profile, J Pers Assess, 81, 2, pp. 123-132, (2003); Juffer P., Furrer R., Gonzalez-Freire M., Santiago C., Verde Z., Serratosa L., Lucia A., Genotype distributions in top-level soccer players: a role for ACE?, Int J Sports Med, 30, 5, pp. 387-392, (2009); Kasper H., Ernährungsmedizin und Diätetik, 10, (2004); Lamberts S.W., Uitterlinden A.G., Genetic testing in clinical practice, Annu Rev Med, 60, pp. 431-442, (2009); Reilly T., Bangsbo J., Franks A., Anthropometric and physiological predispositions for elite soccer, J Sports Sci, 18, 9, pp. 669-683, (2000); Reiss S., Wiltz J., Sherman M., Trait motivational correlates of athleticism, Personality and Individual Differences, 30, 7, pp. 1139-1145, (2001); Santiago C., Gonzalez-Freire M., Serratosa L., Morate F.J., Meyer T., Gomez-Gallego F., Lucia A., ACTN3 genotype in professional soccer players, Br J Sports Med, 42, 1, pp. 71-73, (2008)","J. Freiwald; Bergische Universität Wuppertal, Forschungszentrum für Leistungsdiagnostik und Trainingsberatung, D-42097 Wuppertal, Fuhlrottstraße 10, Germany; email: Freiwald@uni-wuppertal.de","","Elsevier GmbH","0949328X","","","","German","Sport Orthop. Sport Traumatol.","Article","Final","","Scopus","2-s2.0-84878016522" "Harrison K.; Feeney D.; Pryhoda M.K.; Dicharry J.; Nelson N.M.; Shelburne K.B.; Davidson B.S.","Harrison, Kathryn (57202257933); Feeney, Daniel (57188750271); Pryhoda, Moira K. (57208209947); Dicharry, Jay (24831542100); Nelson, Nicholas M. (57222558986); Shelburne, Kevin B. (6601991041); Davidson, Bradley S. (7402965749)","57202257933; 57188750271; 57208209947; 24831542100; 57222558986; 6601991041; 7402965749","Alternative upper configurations during agility-based movements: part 2, joint-level biomechanics","2021","Footwear Science","13","2","","167","180","13","5","10.1080/19424280.2021.1899296","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85103225136&doi=10.1080%2f19424280.2021.1899296&partnerID=40&md5=59776f95d91da8476a26b419cc3bf493","Performance Fit Lab, BOA Technology, Denver, CO, United States; Department of Biomechanics, BOA Technology, Denver, CO, United States; Department of Mechanical Engineering, University of Denver, Denver, CO, United States; REP Lab, Bend, OR, United States","Harrison K., Performance Fit Lab, BOA Technology, Denver, CO, United States; Feeney D., Department of Biomechanics, BOA Technology, Denver, CO, United States; Pryhoda M.K., Department of Mechanical Engineering, University of Denver, Denver, CO, United States; Dicharry J., REP Lab, Bend, OR, United States; Nelson N.M., Department of Mechanical Engineering, University of Denver, Denver, CO, United States; Shelburne K.B., Department of Mechanical Engineering, University of Denver, Denver, CO, United States; Davidson B.S., Department of Mechanical Engineering, University of Denver, Denver, CO, United States","Alternative shoe fit configurations can improve agility performance, however the joint level biomechanical changes that contribute to enhanced performance are unknown. The purpose of this study was to assess differences in joint-level biomechanics related to jumping and cutting performance and potential injury risk mechanisms, between different shoe upper configurations. NCAA Division 1 and club-level male athletes (n = 31) recruited from lacrosse, soccer, tennis, and rugby performed four agility-based movements: Lateral Skater Jump Repeats (LSJ), Countermovement Jump Repeats (CMJ), Triangle Drop Step Drill (TDS), and Anterior-Posterior Drill (AP). Each athlete performed the movements in four shoe upper closures: Standard Closure, Lace Replacement, Y Wrap, and Tri Panel. Ankle, knee and hip range of motion and peak joint moments in the sagittal, frontal and transverse planes, as well as peak joint powers, were calculated for CMJ and LSJ movements. Alternative fit configurations led to increased ankle plantarflexion and knee extension joint moments. Further, frontal and transverse plane ranges of motion at the ankle, knee and hip were reduced with at least one alternative fit configuration. These findings help to explain improved agility performance with upper configurations designed to better fit the shape of the foot and suggest improved lower limb alignment which may help to prevent musculoskeletal injury. © 2021 Informa UK Limited, trading as Taylor & Francis Group.","athletic shoe; joint moment; range of motion; Shoe closure; shoe design; shoe upper","Biomechanics; Drills; Infill drilling; Risk assessment; Tennis; Anterior posteriors; Biomechanical changes; Countermovement; Cutting performance; Knee extension; Musculo-skeletal injuries; Range of motions; Transverse planes; Joints (anatomy)","pp. 34-37; Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in FA premier league soccer, Journal of Sports Science & Medicine, 6, 1, pp. 63-70, (2007); Boden B.P., Torg J.S., Knowles S.B., Hewett T.E., Video analysis of anterior cruciate ligament injury: Abnormalities in hip and ankle kinematics, The American Journal of Sports Medicine, 37, 2, pp. 252-259, (2009); 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Part H, Journal of Engineering in Medicine, 232, 5, pp. 458-467, (2018); (2019); Robbins S., Waked E., Rappel R., Ankle taping improves proprioception before and after exercise in young men, British Journal of Sports Medicine, 29, 4, pp. 242-247, (1995); Sandrey M.A., Kent T.E., The effects of eversion fatigue on frontal plane joint position sense in the ankle, Journal of Sport Rehabilitation, 17, 3, pp. 257-268, (2008); Sigward S.M., Cesar G.M., Havens K.L., Predictors of frontal plane knee moments during side-step cutting to 45 and 110 degrees in men and women: Implications for anterior cruciate ligament injury, Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine, 25, 6, pp. 529-534, (2015); Smith R.E., Paquette M.R., Harry J.R., Powell D.W., Weiss L.W., Footwear and sex differences in performance and joint kinetics during maximal vertical jumping, Journal of Strength and Conditioning Research, 34, 6, pp. 1634-1642, (2020); Tsai L.-C., Ko Y.-A., Hammond K.E., Xerogeanes J.W., Warren G.L., Powers C.M., Increasing hip and knee flexion during a drop-jump task reduces tibiofemoral shear and compressive forces: Implications for ACL injury prevention training, Journal of Sports Sciences, 35, 24, pp. 2405-2411, (2017); Ueno R., Navacchia A., DiCesare C.A., Ford K.R., Myer G.D., Ishida T., Tohyama H., Hewett T.E., Knee abduction moment is predicted by lower gluteus medius force and larger vertical and lateral ground reaction forces during drop vertical jump in female athletes, Journal of Biomechanics, 103, (2020); Worobets J., Wannop J.W., Influence of basketball shoe mass, outsole traction, and forefoot bending stiffness on three athletic movements, Sports Biomechanics, 14, 3, pp. 351-360, (2015); Yang Y., Fang Y., Zhang X., He J., Fu W., Does shoe collar height influence ankle joint kinematics and kinetics in sagittal plane maneuvers?, Journal of Sports Science & Medicine, 16, 4, pp. 543-550, (2017)","","","Taylor and Francis Ltd.","19424280","","","","English","Footwear Sci.","Article","Final","","Scopus","2-s2.0-85103225136" "Marquez G.J.; Mon J.; Acero R.M.; Sanchez J.A.; Fernandez-Del-Olmo M.","Marquez, Gonzalo J. (24176177000); Mon, Javier (35115311700); Acero, Rafael M. (57222101186); Sanchez, Jose A. (57300617000); Fernandez-Del-Olmo, Miguel (14041137700)","24176177000; 35115311700; 57222101186; 57300617000; 14041137700","Low-intensity cycling affects the muscle activation pattern of consequent countermovement jumps","2009","Journal of Strength and Conditioning Research","23","5","","1470","1476","6","7","10.1519/JSC.0b013e3181a517f3","https://www.scopus.com/inward/record.uri?eid=2-s2.0-70350731789&doi=10.1519%2fJSC.0b013e3181a517f3&partnerID=40&md5=850d299c1f94df3e954a24e3142e85fb","Learning and Human Movement Control Group, Facultade de Ciencias Do Deporte e A, Universidad de A Coruña, A Coruña, Spain","Marquez G.J., Learning and Human Movement Control Group, Facultade de Ciencias Do Deporte e A, Universidad de A Coruña, A Coruña, Spain; Mon J., Learning and Human Movement Control Group, Facultade de Ciencias Do Deporte e A, Universidad de A Coruña, A Coruña, Spain; Acero R.M., Learning and Human Movement Control Group, Facultade de Ciencias Do Deporte e A, Universidad de A Coruña, A Coruña, Spain; Sanchez J.A., Learning and Human Movement Control Group, Facultade de Ciencias Do Deporte e A, Universidad de A Coruña, A Coruña, Spain; Fernandez-Del-Olmo M., Learning and Human Movement Control Group, Facultade de Ciencias Do Deporte e A, Universidad de A Coruña, A Coruña, Spain","Players (eg, basketball, soccer, and football) often use a static bicycle during a game to maintain warming. However, the effectiveness of this procedure has not been addressed in the literature. Thus, it runknown whether low-intensity cycling movement can affect explosive movement performance. In this study, 1 0 male subjects performed countermovement jumps before and after a 15- minutes cycling bout at 35% of their maximal power output. Three sessions were tested for 3 different cadences of cycling: freely chosen cadence, 20% lower than freely chosen cadence (FCC-20%), and 20% higher than freely chosen cadence (FCC+20%). Jump height, kinematics, and electromyogram were recorded simultaneously during the countermovement jumps. The results showed a significant decreasing in the height of countermovement jump after cycling at freely chosen cadence and FCC-20% (p = 0.03 and p = 0.04, respectively), but not for FCC+20% cadences. The electromyographic parameters suggest that changes in the countermovement jump after cycling can be attributed to alteration of the pattern of activation and may be modulated by the preceding cycling cadence. Our study indicates that to avoid a possible negative effect of the cycling in the subsequent explosive movements, a cadence 20% higher than the preferred cadence must be used. © 2009 National Strength and Conditioning Association.","Cadence; EMG; Vertical jump; Warmup","Biomechanics; Electromyography; Ergometry; Humans; Lower Extremity; Male; Movement; Muscle, Skeletal; Young Adult; adult; article; biomechanics; electromyography; ergometry; human; innervation; leg; male; methodology; movement (physiology); physiology; skeletal muscle","Ahlquist L.E., Bassett J.R., Sufit R., Nagle F.J., Thomas D.P., The effect of pedaling frequency on glycogen depletion rates in type i and type II quadriceps muscle fibers during submaximal cycling exercise, Eur J Appl Physiol Occup Physiol, 65, pp. 360-364, (1992); Argentin S., Hausswirth C., Bernard T., Bieuzen F., Leveque J.M., Couturier A., Lepers R., Relation between preferred and optimal cadences during two hours of cycling in triathletes, Br J Sports Med, 40, pp. 293-298, (2006); Bentley D.J., Smith P.A., Davie A.J., Zhou S., Muscle activation of the knee extensors following high intensity endurance exercise in cyclists, Eur J Appl Physiol, 81, pp. 297-302, (2000); Bosco C., Komi P.V., Mechanical characteristics and fiber composition of human leg extensor muscles, Eur JAppl Physiol Occup Physiol, 41, pp. 275-284, (1979); Bosco C., Luhtanen P., Komi P.V., A simple method for measurement of mechanical power in jumping, Eur J Appl Physiol Occup Physiol, 50, pp. 273-282, (1983); Bosco C., Viitasalo J.T., Potentiation of myoelectrical activity of human muscles in vertical jumps, Electromyogr Clin Neurophysiol, 22, pp. 549-562, (1982); Faria E.W., Parker D.L., Faria I.E., The science of cycling: Factors affecting performance-Part 2, Sports Med, 35, pp. 313-337, (2005); Goodwin P.C., Koorts K., MacK R., Mai S., Morrissey M.C., Hooper D.M., Reliability ofleg muscle electromyography in vertical jumping, Eur J Appl Physiol Occup Physiol, 79, pp. 374-378, (1999); Hausswirth C., Lehenaff D., Dreano P., Savonen K., Effects of cycling alone or in a sheltered position on subsequent running performance during a triathlon, Med Sci Sports Exerc, 31, pp. 599-604, (1999); 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Millet G.Y., Lepers R., Alterations of neuromuscular function after prolonged running, cycling and skiing exercises, Sports Med, 34, pp. 105-116, (2004); Nardone A., Schieppati M., Postural adjustments associated with voluntary contraction ofleg muscles in standing man, Exp Brain Res, 69, pp. 469-480, (1988); Rodacki A.L., Fowler N.E., Bennet S.J., Vertical jump coordination: Fatigue effects, Med Sci Sport Exerc, 34, pp. 105-116, (2002); Samozino P., Horvais N., Hintzy F., Interactions between cadence and power output effects on mechanical efficiency during sub maximal cycling exercises, Eur J Appl Physiol, 97, pp. 133-139, (2006); Sanderson D.J., Martin P.E., Honeyman G., Keefer J., Gastrocnemius and soleus muscle length, velocity, and EMG responses to changes in pedalling cadence, J Electromyogr Kinesiol, 16, pp. 642-649, (2006); Sarre G., Lepers R., Neuromuscular function during prolonged pedalling exercise at different cadences, Acta Physiol Scand, 185, pp. 321-328, (2005); Sarre G., Lepers R., Maffiuletti N., Millet G., Martin A., Influence of cycling cadence on neuromuscular activity of the knee extensors in humans, Eur J Appl Physiol, 88, pp. 476-479, (2003); Vercruyssen F., Brisswalter J., Hausswirth C., Bernard T., Bernard O., Vallier J.M., Influence of cycling cadence on subsequent running performance in triathletes, Med Sci Sports Exerc, 34, pp. 530-536, (2002)","M. Fernandez-Del-Olmo; Learning and Human Movement Control Group, Facultade de Ciencias Do Deporte e A, Universidad de A Coruña, A Coruña, Spain; email: mafo@udc.es","","","10648011","","","19620918","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-70350731789" "Burigo R.L.; Scoz R.D.; Alves B.M.D.O.; Da Silva R.A.; Melo-Silva C.A.; Vieira E.R.; Hirata R.P.; Amorim C.F.","Burigo, Ricardo Lima (57202757595); Scoz, Robson Dias (57189907286); Alves, Bruno Mazziotti De Oliveira (57202754615); Da Silva, Rubens Alexandre (56667857300); Melo-Silva, Cesar Augusto (51161538400); Vieira, Edgar Ramos (7102986953); Hirata, Rogerio Pessoto (35181344100); Amorim, Cesar Ferreira (23024072100)","57202757595; 57189907286; 57202754615; 56667857300; 51161538400; 7102986953; 35181344100; 23024072100","Concentric and eccentric isokinetic hamstring injury risk among 582 professional elite soccer players: A 10-years retrospective cohort study","2020","BMJ Open Sport and Exercise Medicine","6","1","e000868","","","","7","10.1136/bmjsem-2020-000868","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102167354&doi=10.1136%2fbmjsem-2020-000868&partnerID=40&md5=e1ab35a9b24098f0f01db85f0e5497ac","Physical Therapy Department, Universidade Cidade de Sao Paulo, Sao Paulo, SP, Brazil; Physiotherapy, Universidade Cidade de Sao Paulo, Sao Paulo, Brazil; Physical Therapy Department, Universite du Quebec, Quebec, QC, Canada; Faculty of Medicine, Universidade de Brasilia, Brasilia, DF, Brazil; Physical Therapy Department, Florida International University, Miami, FL, United States; Department of Health Science and Technology, Aalborg Universitet, Aalborg, Denmark","Burigo R.L., Physical Therapy Department, Universidade Cidade de Sao Paulo, Sao Paulo, SP, Brazil; Scoz R.D., Physical Therapy Department, Universidade Cidade de Sao Paulo, Sao Paulo, SP, Brazil; Alves B.M.D.O., Physical Therapy Department, Universidade Cidade de Sao Paulo, Sao Paulo, SP, Brazil, Physiotherapy, Universidade Cidade de Sao Paulo, Sao Paulo, Brazil; Da Silva R.A., Physiotherapy, Universidade Cidade de Sao Paulo, Sao Paulo, Brazil, Physical Therapy Department, Universite du Quebec, Quebec, QC, Canada; Melo-Silva C.A., Physiotherapy, Universidade Cidade de Sao Paulo, Sao Paulo, Brazil, Faculty of Medicine, Universidade de Brasilia, Brasilia, DF, Brazil; Vieira E.R., Physiotherapy, Universidade Cidade de Sao Paulo, Sao Paulo, Brazil, Physical Therapy Department, Florida International University, Miami, FL, United States; Hirata R.P., Physiotherapy, Universidade Cidade de Sao Paulo, Sao Paulo, Brazil, Department of Health Science and Technology, Aalborg Universitet, Aalborg, Denmark; Amorim C.F., Physical Therapy Department, Universidade Cidade de Sao Paulo, Sao Paulo, SP, Brazil, Physiotherapy, Universidade Cidade de Sao Paulo, Sao Paulo, Brazil, Physical Therapy Department, Universite du Quebec, Quebec, QC, Canada, Physical Therapy Department, Florida International University, Miami, FL, United States","Background/Aim Different authors have tried to correlate the peak isokinetic torque values with the incidence of soccer match injuries. However, due to the wide variety of assessment testing protocols, such an inference becomes difficult. This study aimed to verify the capacity of an isokinetic test to establish injury risk reference values for hamstring strain injuries. Methods A retrospective cohort study based on isokinetic data and clinical records from the last 10 years was conducted in 582 Brazilian elite-professional soccer players, who were subjected to the same isokinetic test protocol, machine, and tester. A Multivariate Logistic Regression Analysis for Complex Data Sampling was used to generate injury risk statistical indexes. Results Multivariate regression analysis of both legs provided important data to identify the cut-off values of Concentric Peak Torque (181.82 Newton/∗metres), Concentric Work (236.23 watts) and Concentric Power (130.11 joules). Conclusions The injury risk indexes indicate that an increase of just one Newton unit in CPT (Concentric Peak Torque) and CJ (Concentric Power) above those cut-off values, can reduce the risk of future injuries by 2% and 2.7%, respectively. © Author(s) (or their employer(s)) 2020.","Biomechanics; Isokinetics; Muscle damage/injuries; Soccer","","Al Attar W.S.A., Soomro N., Sinclair P.J., Et al., Effect of injury prevention programs that include the nordic hamstring exercise on hamstring injury rates in soccer players: A systematic review and meta-Analysis, Sports Med, 47, pp. 907-916, (2017); Dauty M., Menu P., Fouasson-Chailloux A., Et al., Prediction of hamstring injury in professional soccer players by isokinetic measurements, Muscles Ligaments Tendons J, 6, pp. 116-123, (2016); Junge A., Dvorak J., Soccer injuries during the 2014 FIFA World Cup, Br J Sports Med, 49, pp. 599-602, (2015); Fousekis K., Tsepis E., Poulmedis P., Et al., Intrinsic risk factors of non-contact quadriceps and hamstring strains in soccer: A prospective study of 100 professional players, Br J Sports Med, 45, pp. 709-714, (2011); Zvijac J.E., Toriscelli T.A., Merrick S., Et al., Isokinetic concentric quadriceps and hamstring strength variables from the NFL scouting combine are not predictive of hamstring injury in first-year professional soccer players, Am J Sports Med, 41, pp. 1511-1518, (2013); Bourne M.N., Timmins R.G., Opar D.A., Et al., An evidence-based framework for strengthening exercises to prevent hamstring injury, Sports Med, 48, pp. 251-267, (2018); Pincivero D.M., Coelho A.J., Campy R.M., Gender differences in perceived exertion during fatiguing knee extensions, Med Sci Sports Exerc, 36, pp. 109-117, (2004); Robertson R.J., Goss F.L., Metz K.F., Perception of physical exertion during dynamic exercise: A tribute to Professor Gunnar A. V. Borg, Percept Mot Skills, 86, pp. 183-191, (1998); Kannus P., Isokinetic evaluation of muscular performance: Implications for muscle testing and rehabilitation, Int J Sports Med, 15, pp. S11-S18, (1994); Osternig L.R., Isokinetic dynamometry: Implications for muscle testing and rehabilitation, Exerc Sport Sci Rev, 14, pp. 45-80, (1986); Houweling T., Head A., Hamzeh M., Validity of isokinetic testing for previous hamstring injury detection in soccer players, Isokinet Exerc Sci, 17, pp. 213-220, (2009); Manou V., Arseniou P., Gerodimos V., Et al., Test-retest reliability of an isokinetic muscle endurance test, Isokinet Exerc Sci, 10, pp. 177-181, (2002); Amaral G., Marinho H., Ocarino J., Et al., Muscular performance characterization in athletes: A new perspective on isokinetic variables, Braz J Phys Ther, (2014); Paul D.J., Nassis G.P., Testing strength and power in soccer players: The application of conventional and traditional methods of assessment, J Strength Cond Res, 29, pp. 1748-1758, (2015); Lee J.W.Y., Mok K.-M., Chan H.C.K., Et al., Eccentric hamstring strength deficit and poor hamstring-To-quadriceps ratio are risk factors for hamstring strain injury in soccer: A prospective study of 146 professional players, J Sci Med Sport, 21, pp. 789-793, (2018); Van Dyk N., Bahr R., Whiteley R., Et al., Hamstring and quadriceps isokinetic strength deficits are weak risk factors for hamstring strain injuries: A 4-year cohort study, Am J Sports Med, 44, pp. 1789-1795, (2016); Jrlc S., Detanico D., Pupo J.D., Et al., Bilateral asymmetry of knee and ankle isokinetic torque in soccer players u20 category, Revista Brasileira de Cineantropometria Desempenho Humano, 17, pp. 195-204, (2015); Hagglund M., Walden M., Magnusson H., Et al., Injuries affect team performance negatively in professional soccer: An 11-year follow-up of the UEFA champions league injury study, Br J Sports Med, 47, pp. 738-742, (2013); Weber F.S., Bgcd S., Radaelli R., Et al., Avaliação isocinética em jogadores de futebol profissional e comparação do desempenho entre as diferentes posições ocupadas no campo, Rev Bras Med Esporte, 16, pp. 264-268, (2010); Logerstedt D.S., Snyder-Mackler L., Ritter R.C., Et al., Orthopedic section of the American physical therapy association. Knee pain and mobility impairments: Meniscal and articular cartilage lesions, J Orthop Sports Phys Ther, 40, pp. A1-A35, (2010); Ahtiainen J.P., Pakarinen A., Alen M., Et al., Short vs. Long rest period between the sets in hypertrophic resistance training: Influence on muscle strength, size, and hormonal adaptations in trained men, J Strength Cond Res, 19, pp. 572-582, (2005); Fousekis K., Tsepis E., Vagenas G., Multivariate isokinetic strength asymmetries of the knee and ankle in professional soccer players, J Sports Med Phys Fitness, 50, pp. 465-474, (2010); Fousekis K., Tsepis E., Vagenas G., Lower limb strength in professional soccer players: Profile, asymmetry, and training age, J Sports Sci Med, 9, pp. 364-373, (2010); Dauty M., Menu P., Fouasson-Chailloux A., Hamstring muscle injury prediction by isokinetic ratios depends on the method used, Clin J Sport Med, 30, pp. 40-45, (2020); Orchard J., Marsden J., Lord S., Et al., Preseason hamstring muscle weakness associated with hamstring muscle injury in Australian soccerers, Am J Sports Med, 25, pp. 81-85, (1997); Bennell K., Wajswelner H., Lew P., Et al., Isokinetic strength testing does not predict hamstring injury in Australian rules soccerers, Br J Sports Med, 32, pp. 309-314, (1998)","C.F. Amorim; Physical Therapy Department, Universidade Cidade de Sao Paulo, Sao Paulo, Brazil; email: cesar.amorim@unicid.edu.br","","BMJ Publishing Group","20557647","","","","English","BMJ Open Sport Exerc. Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85102167354" "Oliva-Lozano J.M.; Maraver E.F.; Fortes V.; Muyor J.M.","Oliva-Lozano, José M. (57213591670); Maraver, Elisa F. (57219472595); Fortes, Víctor (57216831196); Muyor, José M. (35103040000)","57213591670; 57219472595; 57216831196; 35103040000","Effect of playing position, match half, and match day on the trunk inclination, G-forces, and locomotor efficiency experienced by Elite Soccer players in match play","2020","Sensors (Switzerland)","20","20","5814","1","13","12","7","10.3390/s20205814","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092936372&doi=10.3390%2fs20205814&partnerID=40&md5=f6791863c6f9eceb258b00d60ee2501c","Health Research Centre, University of Almería, Almería, 04120, Spain; Faculty of Computer Science, Multimedia and Telecommunications, Universitat Oberta de Catalunya, Barcelona, 08018, Spain; Unión Deportiva Almería, Almería, 04007, Spain; Laboratory of Kinesiology, Biomechanics and Ergonomics (KIBIOMER Lab.), Research Central Services, University of Almería, Almería, 04120, Spain","Oliva-Lozano J.M., Health Research Centre, University of Almería, Almería, 04120, Spain; Maraver E.F., Faculty of Computer Science, Multimedia and Telecommunications, Universitat Oberta de Catalunya, Barcelona, 08018, Spain; Fortes V., Unión Deportiva Almería, Almería, 04007, Spain; Muyor J.M., Health Research Centre, University of Almería, Almería, 04120, Spain, Laboratory of Kinesiology, Biomechanics and Ergonomics (KIBIOMER Lab.), Research Central Services, University of Almería, Almería, 04120, Spain","The rapid growth of wearable sensors has allowed the analysis of trunk kinematics during the match, which is necessary for having a better understanding of the postural demands of soccer players. However, some contextual variables may have an impact on the physical demands of the players. This study aimed to analyze the effect of three contextual variables (playing position, match half, and match day) on the sagittal trunk inclination, G-forces, and locomotor efficiency experienced by soccer players in match play. Then, wearable sensors were used to collect the trunk kinematics during 13 matches. Firstly, positional differences were found on the trunk inclination (p = 0.01) and the G-forces experienced by the players (p < 0.001). For example, the greatest and lowest trunk inclination was found for FW (~34.01°) and FB (~28.85°) while the greatest and lowest G-forces were found for WMF (1.16 G) and CD (1.12 G), respectively. However, there were no positional differences in the locomotor efficiency (p = 0.10). Secondly, the match half had a significant effect on the trunk inclination (p = 0.01) and the G-forces experienced by the players (p < 0.001) with significantly lower values observed during the second half. No differences between halves were found on the locomotor efficiency for any playing position (p = 0.41). Finally, no significant effect of match day on any variable was observed. This investigation is one of the first steps towards enhancing the understanding of trunk kinematics from elite soccer players. The positional differences found on the trunk inclination and G-forces imply that the development of positionspecific training drills considering the postural demands is necessary to prepare the players not only for the physical demands but also for successful performance in the field of regard. The resistance to fatigue needs to be trained given the differences between halves. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.","Football; Inertial measurement units; Load; Match analysis; Posture; Team sports","Adult; Athletes; Athletic Performance; Biomechanical Phenomena; Fatigue; Humans; Male; Running; Soccer; Torso; Young Adult; Efficiency; Football; Kinematics; Contextual variables; Field of regard; Physical demand; Rapid growth; Soccer player; Trunk inclination; Trunk kinematics; adult; athlete; athletic performance; biomechanics; fatigue; human; male; physiology; running; soccer; trunk; young adult; Wearable sensors","Oliva-Lozano J.M., Fortes V., Muyor J.M., The first, second, and third most demanding passages of play in professional soccer: a longitudinal study, Biol. Sport, 38, pp. 165-174, (2020); Oliva-Lozano J.M., Rojas-Valverde D., Gomez-Carmona C.D., Fortes V., Pino-Ortega J., Impact of contextual variables on the representative external load profile of Spanish professional soccer match-play:A full season study, Eur. J. Sport Sci, pp. 1-10, (2020); Martin-Garcia A., Casamichana D., Gomez Diaz A., Cos F., Gabbett T.J., Positional Differences in the Most Demanding Passages of Play in Football Competition, J. Sports Sci. Med, 17, pp. 563-570, (2018); Liu H., Wang L., Huang G., Zhang H., Mao W., Activity profiles of full-match and substitution players in the 2018 FIFA World Cup, Eur. J. Sport Sci, 20, pp. 599-605, (2019); Riboli A., Semeria M., Coratella G., Esposito F., Effect of formation, ball in play and ball possession on peak demands in elite soccer, Biol. Sport, 38, pp. 195-205, (2021); Hennessy L., Jeffreys I., The Current Use of GPS, Its Potential, and Limitations in Soccer, Strength Cond. J, 40, pp. 83-94, (2018); Vanttinen T., Blomqvist M., Hakkinen K., Development of Body Composition, Hormone Profile, Physical Fitness, General Perceptual Motor Skills, Soccer Skills and On-The-Ball Performance in Soccer-Specific Laboratory Test Among Adolescent Soccer Players, J. Sports Sci. Med, 9, pp. 547-556, (2010); Ward P., Williams A.M., Perceptual and Cognitive Skill Development in Soccer: The Multidimensional Nature of Expert Performance, J. Sport Exerc. Psychol, 25, pp. 93-111, (2003); Vaeyens R., Lenoir M., Williams A.M., Mazyn L., Philippaerts R.M., The Effects of Task Constraints on Visual Search Behavior and Decision-Making Skill in Youth Soccer Players, J. Sport Exerc. Psychol, 29, pp. 147-169, (2007); Warman G.E., Cole M.H., Johnston R.D., Chalkley D., Pepping G.-J., Using Microtechnology to Quantify Torso Angle During Match-Play in Field Hockey, J. Strength Cond. Res, 33, pp. 2648-2654, (2019); Warman G.E., Chalkley D., Cole M.H., Pepping G.-J., Utilising GPS Data to Quantify Torso Range of Motion in Field Hockey Athletes, Proceedings, 2, (2018); Grosdent S., Demoulin C., de La Cruz C.R., Giop R., Tomasella M., Crielaard J.-M., Vanderthommen M., Lumbopelvic motor control and low back pain in elite soccer players: A cross-sectional study, J. Sports Sci, 34, pp. 1021-1029, (2016); Schuermans J., Van Tiggelen D., Palmans T., Danneels L., Witvrouw E., Deviating running kinematics and hamstring injury susceptibility in male soccer players: Cause or consequence?, Gait Posture, 57, pp. 270-277, (2017); Teng H.-L., Powers C.M., Influence of Trunk Posture on Lower Extremity Energetics During Running, Med. Sci. Sports Exerc, 47, pp. 625-630, (2014); Teng H.-L., Powers C.M., Sagittal Plane Trunk Posture Influences Patellofemoral Joint Stress During Running, J. Orthop. Sports Phys. Ther, 44, pp. 785-792, (2014); Lim J., Palmer C.J., Busa M.A., Amado A., Rosado L.D., Ducharme S.W., Simon D., Van Emmerik R.E.A., Additional helmet and pack loading reduce situational awareness during the establishment of marksmanship posture, Ergonomics, 60, pp. 824-836, (2017); Gomez-Carmona C.D., Pino-Ortega J., Sanchez-Urena B., Ibanez S.J., Rojas-Valverde D., Accelerometry-Based External Load Indicators in Sport: Too Many Options, Same Practical Outcome?, Int. J. Environ. Res. Public Health, 16, (2019); Gomez-Carmona C.D., Bastida-Castillo A., Ibanez S.J., Pino-Ortega J., Accelerometry as a method for external workload monitoring in invasion team sports. A systematic review, PLoS One, 15, (2020); Granero-Gil P., Gomez-Carmona C.D., Bastida-Castillo A., Rojas-Valverde D., de la Cruz E., Pino-Ortega J., Influence of playing position and laterality in centripetal force and changes of direction in elite soccer players, PLoS One, 15, (2020); Simoni L., Pancani S., Vannetti F., Macchi C., Pasquini G., Relationship between Lower Limb Kinematics and Upper Trunk Acceleration in Recreational Runners, J. Healthc. Eng, 20, pp. 1-7, (2020); Lindsay T.R., Yaggie J.A., McGregor S.J., Contributions of lower extremity kinematics to trunk accelerations during moderate treadmill running, J. Neuroeng. Rehabil, 11, (2014); Barrett S., Midgley A., Reeves M., Joel T., Franklin E., Heyworth R., Garrett A., Lovell R., The withinmatch patterns of locomotor efficiency during professional soccer match play: Implications for injury risk?, J. Sci. Med. Sport, 19, pp. 810-815, (2016); Trewin J., Meylan C., Varley M.C., Cronin J., The match-to-match variation of match-running in elite female soccer, J. Sci. Med. Sport, 21, pp. 196-201, (2018); Oliva-Lozano J.M., Rojas-Valverde D., Gomez-Carmona C.D., Fortes V., Pino-Ortega J., Worst case scenario match analysis and contextual variables in professional soccer players: A longitudinal study, Biol. Sport, 37, pp. 429-436, (2020); Russell M., Sparkes W., Northeast J., Cook C.J., Love T.D., Bracken R.M., Kilduff L.P., Changes in Acceleration and Deceleration Capacity Throughout Professional Soccer Match-Play, J. Strength Cond. Res, 30, pp. 2839-2844, (2016); Carling C., Dupont G., Are declines in physical performance associated with a reduction in skill-related performance during professional soccer match-play?, J. Sports Sci, 29, pp. 63-71, (2011); Oliva-Lozano J.M., Gomez-Carmona C.D., Pino-Ortega J., Moreno-Perez V., Rodriguez-Perez M.A., Match and Training High Intensity Activity-Demands Profile During a Competitive Mesocycle in Youth Elite Soccer Players, J. Hum. Kinet, 75, pp. 1-11, (2020); Gomez-Carmona C.D., Bastida-Castillo A., Gonzalez-Custodio A., Olcina G., Pino-Ortega J., Using an Inertial Device (WIMU PRO) to Quantify Neuromuscular Load in Running, J. Strength Cond. Res, 34, pp. 365-373, (2020); Barrett S., Midgley A.W., Towlson C., Garrett A., Portas M., Lovell R., Within-Match PlayerLoadTM Patterns During a Simulated Soccer Match: Potential Implications for Unit Positioning and Fatigue Management, Int. J. Sports Physiol. Perform, 11, pp. 135-140, (2016); Oliva-Lozano J.M., Martin-Fuentes I., Muyor J.M., Validity and Reliability of a New Inertial Device for Monitoring Range of Motion at the Pelvis During Sexual Intercourse, Int. J. Environ. Res. Public Health, 17, (2020); Gomez-Carmona C.D., Bastida-Castillo A., Garcia-Rubio J., Ibanez S.J., Pino-Ortega J., Static and dynamic reliability of WIMU PROTM accelerometers according to anatomical placement, Proc. Inst. Mech. Eng. Part P J. Sport. Eng. Technol, 233, pp. 238-248, (2019); Oliva-Lozano J.M., Fortes V., Krustrup P., Muyor J.M., Acceleration and sprint profiles of professional male football players in relation to playing position, PLoS One, 15, (2020); Di Salvo V., Baron R., Tschan H., Calderon Montero F.J., Bachl N., Pigozzi F., Performance characteristics according to playing position in elite soccer, Int. J. Sports Med, 28, pp. 222-227, (2007); Castellano J., Blanco-Villasenor A., Alvarez D., Contextual Variables and Time-Motion Analysis in Soccer, Int. J. Sports Med, 32, pp. 415-421, (2011); Reilly T., Drust B., Clarke N., Muscle Fatigue During Football Match-Play, Sports Med, 38, pp. 357-367, (2008); Oliva-Lozano J.M., Muyor J.M., Core Muscle Activity During Physical Fitness Exercises: A Systematic Review, Int. J. Environ. Res. Public Health, 17, pp. 1-38, (2020); Al Haddad H., Mendez-Villanueva A., Torreno N., Munguia-Izquierdo D., Suarez-Arrones L., Variability of GPS-derived running performance during official matches in elite professional soccer players, J. Sports Med. Phys. Fitness, 58, pp. 1439-1445, (2017); Rojas-Valverde D., Sanchez-Urena B., Pino-Ortega J., Gomez-Carmona C., Gutierrez-Vargas R., Timon R., Olcina G., External Workload Indicators of Muscle and Kidney Mechanical Injury in Endurance Trail Running, Int. J. Environ. Res. Public Health, 16, (2019); Gomez-Carmona C., Gamonales J., Pino-Ortega J., Ibanez S., Comparative Analysis of Load Profile Between Small-Sided Games and Official Matches in Youth Soccer Players, Sports, 6, (2018); Cummins C., Orr R., Analysis of Physical Collisions in Elite National Rugby League Match Play, Int. J. Sports Physiol. Perform, 10, pp. 732-739, (2015); Fernandez-Leo A., Gomez-Carmona C.D., Garcia-Rubio J., Ibanez S.J., Influence of Contextual Variables on Physical and Technical Performance in Male Amateur Basketball: A Case Study, Int. J. Environ. Res. Public Health, 17, (2020); Bastida-Castillo A., Gomez-Carmona C.D., De la Cruz Sanchez E., Pino-Ortega J., Accuracy, intra- and inter-unit reliability, and comparison between GPS and UWB-based position-tracking systems used for time-motion analyses in soccer, Eur. J. Sport Sci, 18, pp. 450-457, (2018); Munoz-Lopez A., Granero-Gil P., Pino-Ortega J., De Hoyo M., The validity and reliability of a 5-hz GPS device for quantifying athletes’ sprints and movement demands specific to team sports, J. Hum. Sport Exerc, 12, pp. 156-166, (2017); Poitras I., Dupuis F., Bielmann M., Campeau-Lecours A., Mercier C., Bouyer L., Roy J.-S., Validity and Reliability of Wearable Sensors for Joint Angle Estimation: A Systematic Review, Sensors, 19, (2019); Fasel B., Sporri J., Chardonnens J., Kroll J., Muller E., Aminian K., Joint Inertial Sensor Orientation Drift Reduction for Highly Dynamic Movements, IEEE J. Biomed. Heal. Informatics, 22, pp. 77-86, (2017); Fong D.T.-P., Chan Y.-Y., The Use of Wearable Inertial Motion Sensors in Human Lower Limb Biomechanics Studies: A Systematic Review, Sensors, 10, pp. 11556-11565, (2010); Qiu S., Wang Z., Zhao H., Qin K., Li Z., Hu H., Inertial/magnetic sensors based pedestrian dead reckoning by means of multi-sensor fusion, Inf. Fusion, 39, pp. 108-119, (2018); Guiry J., van de Ven P., Nelson J., Multi-Sensor Fusion for Enhanced Contextual Awareness of Everyday Activities with Ubiquitous Devices, Sensors, 14, pp. 5687-5701, (2014); Oliva-Lozano J.M., Martin-Fuentes I., Muyor J.M., Validity and Reliability of an Inertial Device for Measuring Dynamic Weight-Bearing Ankle Dorsiflexion, Sensors, 20, (2020); Medina D., Pons E., Gomez A., Guitart M., Martin A., Vazquez-Guerrero J., Camenforte I., Carles B., Font R., Are There Potential Safety Problems Concerning the Use of Electronic Performance-Tracking Systems? The Experience of a Multisport Elite Club, Int. J. Sports Physiol. Perform, 12, pp. 1115-1118, (2017)","J.M. Muyor; Health Research Centre, University of Almería, Almería, 04120, Spain; email: jol908@ual.es","","MDPI AG","14248220","","","33066676","English","Sensors","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85092936372" "Graydon R.; Fewtrell D.; Atkins S.; Sinclair J.","Graydon, R. (57193212351); Fewtrell, D. (6506227299); Atkins, S. (14036820800); Sinclair, J. (36544295100)","57193212351; 6506227299; 14036820800; 36544295100","The effects of ankle protectors on lower limb kinematics in male football players: A comparison to braced and unbraced ankles","2017","Comparative Exercise Physiology","13","4","","251","258","7","5","10.3920/cep160031","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85033409172&doi=10.3920%2fcep160031&partnerID=40&md5=acf0469b1efe7af2dc0e3f0e9fb21b61","Centre for Applied Sport and Exercise Sciences, School of Sport and Wellbeing, University of Central Lancashire, Fylde road, Preston, Lancashire, PR1 2HE, United Kingdom; School of Health Sciences, University of Salford, Manchester, M5 4WT, United Kingdom","Graydon R., Centre for Applied Sport and Exercise Sciences, School of Sport and Wellbeing, University of Central Lancashire, Fylde road, Preston, Lancashire, PR1 2HE, United Kingdom; Fewtrell D., Centre for Applied Sport and Exercise Sciences, School of Sport and Wellbeing, University of Central Lancashire, Fylde road, Preston, Lancashire, PR1 2HE, United Kingdom; Atkins S., School of Health Sciences, University of Salford, Manchester, M5 4WT, United Kingdom; Sinclair J., Centre for Applied Sport and Exercise Sciences, School of Sport and Wellbeing, University of Central Lancashire, Fylde road, Preston, Lancashire, PR1 2HE, United Kingdom","Football (soccer) players have a high risk of injuring the lower extremities. To reduce the risk of ankle inversion injuries ankle braces can be worn. To reduce the risk of ankle contusion injuries ankle protectors can be utilised. However, athletes can only wear one of these devices at a time. The effects of ankle braces on stance limb kinematics has been extensively researched, however ankle protectors have had little attention. Therefore, the current study aimed to investigate the effects of ankle protectors on lower extremity kinematics during the stance phase of jogging and compare them with braced and uncovered ankles. Twelve male participants ran at 3.4 m/s in three test conditions; ankle braces (BRACE), ankle protectors (PROTECTOR) and with uncovered ankles (WITHOUT). Stance phase kinematics were collected using an eight-camera motion capture system. Kinematic data between conditions were analysed using one-way repeated measures ANOVA. The results showed that BRACE (absolute range of motion (ROM) = 10.72° and relative ROM = 10.26°) significantly (P < 0.05) restricted the ankle in the coronal plane when compared to PROTECTOR (absolute ROM=13.44° and relative ROM =12.82°) and WITHOUT (absolute ROM=13.64° and relative ROM=13.10°). It was also found that both BRACE (peak dorsiflexion=17.02° and absolute ROM=38.34°) and PROTECTOR (peak dorsiflexion =18.46° and absolute ROM =40.15°) significantly (P < 0.05) reduced sagittal plane motion when compared to WITHOUT (peak dorsiflexion =19.20° and absolute ROM =42.66°). Ankle protectors' effects on lower limb kinematics closely resemble that of an unbraced ankle. Therefore, ankle protectors should only be used as a means to reduce risk of ankle contusion injuries and not implemented as a method to reduce the risk of ankle inversion injuries. Furthermore, the reductions found in sagittal plane motion of the ankle could possibly increase the bodies energy demand needed for locomotion when ankle protectors are utilised. © 2017 Wageningen Academic Publishers.","Ankle braces; Ankle protectors; Biomechanics; Football; Motion analysis; Soccer","","Andersen T.E., Floerenes T.W., Arnason A., Bahr R., Video analysis of the mechanisms for ankle injuries in football, American Journal of Sports Medicine, 32, pp. 69-79, (2004); Ankrah S., Mills N., Ankle protection in football shin guards, (2002); Ankrah S., Mills N., Analysis of ankle protection in association football, Sports Engineering, 7, pp. 41-52, (2004); Bocchinfuso C., Sitler M.R., Kimur I.F., Effects of two semirigid prophylactic ankle stabilizers on speed, agility, and vertical jump, Journal of Sport Rehabilitation, 3, pp. 125-134, (1994); Cappozzo A., Catani F., Croce U.D., Leardini A., Position and orientation in space of bones during movement: anatomical frame definition and determination, Clinical Biomechanics, 10, pp. 171-178, (1995); 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Gross M.T., Clemence L.M., Cox B.D., McMillan H.P., Meadows A.F., Piland C.S., Powers W.S., Effect of ankle orthoses on functional performance for individuals with recurrent lateral ankle sprains, Journal of Orthopaedic and Sports Physical Therapy, 25, pp. 245-252, (1997); Hagglund M., Walden M., Magnusson H., Kristenson K., Bengtsson H., Ekstrand J., Injuries affect team performance negatively in professional football: an 11-year follow-up of the UEFA Champions League injury study, British Journal of Sports Medicine, 47, pp. 738-742, (2013); Hawkins R.D., Fuller C.W., A prospective epidemiological study of injuries in four English professional football clubs, British Journal Of Sports Medicine, 33, pp. 196-203, (1999); Huang T.P., Shorter K.A., Adamczyk P.G., Kuo A.D., Mechanical and energetic consequences of reduced ankle plantarflexion in human walking, Journal of Experimental Biology, 218, pp. 3541-3550, (2015); Janssen K.W., Mechelen W.V., Verhagen E.A.L.M., Bracing superior to neuromuscular training for the prevention of selfreported recurrent ankle sprains: a three-arm randomised controlled trial, British Journal of Sports Medicine, 48, pp. 1235-1239, (2014); Junge A., Dvorak J., Injury surveillance in the World Football Tournaments 1998-2012, British Journal of Sports Medicine, 47, pp. 782-788, (2013); Kaplan Y., Prevention of ankle sprains in sport: a systematic literature review, British Journal Of Sports Medicine, 45, (2011); Locke A., Sitler M., Aland C., Kimura I., Long-term use of a softshell prophylactic ankle stabilizer on speed, agility, and vertical jump performance, Journal of Sport Rehabilitation, 6, pp. 235-245, (1997); Lohkamp M., Craven S., Walker-Johnson C., Greig M., The influence of ankle taping on changes in postural stability during soccer-specific activity, Journal of Sport Rehabilitation, 18, pp. 482-492, (2009); McGuine T.A., Keene J.S., The effect of a balance training program on the risk of ankle sprains in high school athletes, American Journal of Sports Medicine, 34, pp. 1103-1111, (2006); Olmsted L.C., Vela L.I., Denegar C.R., Hertel J., Prophylactic ankle taping and bracing: a numbers-needed-to-treat and costbenefit analysis, Journal of Athletic Training, 39, pp. 95-100, (2004); Pedowitz D.I., Reddy S., Parekh S.G., Huffman G.R., Sennett B.J., Prophylactic bracing decreases ankle injuries in collegiate female volleyball players, American Journal of Sports Medicine, 36, pp. 324-327, (2008); Salces J.N., Gomez-Carmona P.M., Gracia-Marco L., Moliner-Urdiales D., Sillero-Quintana M., Epidemiology of injuries in first division Spanish football, Journal of Sports Sciences, 32, pp. 1263-1270, (2014); Santos M.J., McIntire K., Foecking J., Liu W., The effects of ankle bracing on motion of the knee and hip joint during trunk roatation tasks, Clinical Biomechanics, 19, pp. 964-971, (2004); Sinclair J., Edmundson C.J., Brooks D., Hobbs S.J., Evaluation of kinematic methods of identifying gait events during running, International Journal of Sports Science and Engineering, 5, pp. 188-192, (2011); Sinclair J., Hebron J., Taylor P.J., The test-retest reliability of knee joint center location techniques, Journal of Applied Biomechanics, 31, pp. 117-121, (2015); Sinclair J., Hobbs S.J., Taylor P.J., Currigan G., Greenhalgh A., The influence of different force and pressure measuring transducers on lower extremity kinematics measured during running, Journal of Applied Biomechanics, 30, pp. 166-172, (2014); Sinclair J., Taylor P.J., Currigan G., Hobbs S.J., The test-retest reliability of three different hip joint centre location techniques, Movement and Sport Sciences, 83, pp. 31-39, (2014); Tang Y.M., Wu Z.H., Liao W.H., Chan K.M., A study of semi-rigid support on ankle supination sprain kinematics, Scandinavian Journal of Medicine and Science in Sports, 20, pp. 822-826, (2010); Thacker S.B., Stroup D.F., Branche C.M., Gilchrist J., Goodman R.A., Weitman E.A., The prevention of ankle sprains in sports, American Journal of Sports Medicine, 27, pp. 753-760, (1999); Verhagen E.A.L.M., Van Mechelen W., De Vente W., The effect of preventive measures on the incidence of ankle sprains, Clinical Journal of Sport Medicine, 10, pp. 291-296, (2000); Walden M., Hagglund M., Ekstrand J., Time-trends and circumstances surrounding ankle injuries in men's professional football: an 11-year follow-up of the UEFA Champions League injury study, British Journal of Sports Medicine, 47, pp. 748-753, (2013)","R. Graydon; Centre for Applied Sport and Exercise Sciences, School of Sport and Wellbeing, University of Central Lancashire, Preston, Lancashire, Fylde road, PR1 2HE, United Kingdom; email: rwgraydon@uclan.ac.uk","","Wageningen Academic Publishers","17552540","","","","English","Comp. Exerc. physiol.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85033409172" "Soroka A.","Soroka, Andrzej (56226232500)","56226232500","The locomotor activity of soccer players based on playing positions during the 2010 World cup","2018","Journal of Sports Medicine and Physical Fitness","58","6","","837","842","5","5","10.23736/S0022-4707.17.04323-7","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048247843&doi=10.23736%2fS0022-4707.17.04323-7&partnerID=40&md5=6fdd3fa3a7951fada6c29ea663aab194","University of Natural Sciences and Humanities in Siedlce, Faculty of Natural Science, B. Prusa 12 St., Siedlce, 08-110, Poland","Soroka A., University of Natural Sciences and Humanities in Siedlce, Faculty of Natural Science, B. Prusa 12 St., Siedlce, 08-110, Poland","Background: The aim of this study was to defne the locomotor activity of footballer players during the 2010 World Cup and to assess what differences existed among different playing positions. Methods: research was conducted using research material collected from the castrol performance index, a kinematic game analysis system that records player movements during a game by use of semi-automatic cameras. a total of 599 players who participated in the championships were analyzed. The results were evaluated using one-way analysis of variance (aNoVa) and a post-hoc test that calculated the Honestly Signifcant Difference (HSD) in order to determine which mean values signifcantly differed among the player positions. Results: It was found that midfelders covered on average the largest distance during a match (10,777.6 m, p<0.001) as well as performing the most locomotor activity at high and sprint intensities (2936.8 m and 108.4 m, respectively). Additionally, midfelders also spent the largest amount of time at performing at a high intensity (10.6%). Strikers also featured high levels of the above parameters; the total length of distance covered with high intensities was found to be on average 2586.7 m, the distance covered at sprint intensity was 105 m. Conclusions: The footballers, playing at the championship level feature excellent locomotor preparation. This fact is undoubtedly supported by the aerobic training of high intensity. Such training allows footballers to extend the distance they cover during the match, increase the intensity of locomotor activities and sprint speed distance. © 2017 Edizioni Minerva Medica.","Athletic performance; Motor activity; Soccer","Adult; Analysis of Variance; Biomechanical Phenomena; Humans; Locomotion; Male; Soccer; Time and Motion Studies; Young Adult; analysis of variance; article; athletic performance; football player; human; locomotion; motor activity; muscle training; post hoc analysis; soccer player; velocity; adult; biomechanics; locomotion; male; physiology; soccer; task performance; young adult","Mohr M., Krustrup P., Andersson H., Kirkendal D., Bangsbo J., Match activities in elite women soccer players at different performance lev-els, J Strenght Cond Res, 22, pp. 341-349, (2008); Rampinini E., Impellizzeri F.M., Castagna C., Coutts A.J., Wisloff U., Technical performance during soccer matches of the Italian Serie a league: Effect of fatigue and competitive level, J Sci Med Sport, 12, pp. 227-233, (2008); Rampinini E., Coutts A.J., Castagna C., Sassi R., Impellizzeri F.M., Variation in top level soccer match performance, Int J Sport Med, 28, pp. 1018-1024, (2007); Bangsbo J., Physiology of Intermittent Exercise, pp. 53-65, (2000); Wisloff U., Helgerud J., Hoff J., Strength and endurance of elite soccer players, Med Sci Sport Exer, 30, pp. 462-467, (1998); Helgerud J., Engen L.C., Wisloff U., Hoff J., Aerobic endurance training improves soccer performance, Med Sci Sport Exer, 33, pp. 1925-1931, (2001); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer: An update, Sport Med, 35, pp. 501-536, (2005); Kemi O.J., Hoff J., Engen L.C., Helgerud J., Wisloff U., Soccer spe-cifc testing of maximal oxygen uptake, J Sports Med Phys Fitness, 43, pp. 139-144, (2003); Sotiropoulos A., Travlos A.K., Gissis I., Souglis A.G., Grezios A., The effect of a 4-week training regimen on body fat and aerobic capacity of professional soccer players during the transition period, J Strenght Cond Res, 23, pp. 1697-1703, (2009); Bloomfeld J., Polman R., O'Donoghue P., Physical demands of different positions in fa premier league soccer, J Sport Sci Med, 6, pp. 63-70, (2007); Andersson H., Ekblom B., Krustrup P., Elite soccer on artifcial turf versus natural grass: Movement pattern, technical standards and player impressions, J Sport Sci, 26, pp. 113-122, (2008); Little T., Williams A.G., Specifcity of acceleration, maximum speed and agility in professional soccer players, J Strenght Cond Res, 19, pp. 76-78, (2007); Krustrup P., Mohr M., Ellingsgaard H., Bangsbo J., Physical demands during an elite female soccer game: Importance of training status, Med Sci Sport Exer, 37, pp. 1242-1248, (2005); Barros R.M.L., Misuta M.S., Menezes R.P., Figueroa P.J., Moura F.A., Cunha S.A., Et al., Analysis of the distances covered by first division Brazilian soccer players obtained with an automatic tracking method, J Sport Sci Med, 6, pp. 233-242, (2007); Di Salvo V., Baron R., Tschan H., Calderon Montero F.J., Bachl N., Pigozzi F., Performance characteristics according to playing position in elite soccer, Int J Sport Med, 28, pp. 222-227, (2007); Bangsbo J., Norregaard L., Thorsoe F., Activity profle of competition soccer, Can J Sport Sci, 16, pp. 110-116, (1991); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, J Sport Sci, 21, pp. 519-528, (2003); Rienzi E., Drust B., Reilly T., Jel C., Martin A., Investigation of anthropometric and work-rate profles of elite South American international soccer players, J Sports Med Phys Fitness, 40, pp. 162-169, (2000); Reilly T., Bangsbo J., Franks A., Anthropometric and physiological predispositions for elite soccer, J Sport Sci, 18, pp. 669-683, (2000); Liebermann D.G., Katz L., Hughes M.D., Bartlett R.M., McClements J., Franks I.M., Advances in the application of information technology to sport performance, J Sport Sci, 20, pp. 755-769, (2002); Di Salvo V., Collins A., Mc Neill B., Cardinale M., Validation of pro-Zone. A new video-based performance analysis system, Int J Perform Anal Sport, 6, pp. 108-119, (2006); Zubillaga A., Gorospe G., Hernadez-Mendo A Blanco-Villanesor A., Comparative Analysis of the High-intensity Activity of Soccer Players in Top-level Competition, pp. 182-186, (2008); Grant A., Lovell R., The use of individualized speed and intensity thresholds for determining the distance run at high-intensity in professional soccer, J Sport Sci, 27, pp. 893-898, (2009); Randers M.B., Mujika I., Hewitt A., Santisteban J., Bischoff R., Solano R., Et al., Application of four different soccer match analysis systems: A comparative study, J Sport Sci, 28, pp. 171-182, (2010); Bradley P.D., Sheldon W., Wooster B., Olsen P., Boanas P., Krustrup P., High-intensity running in fa premier league soccer matches, J Sport Sci, 27, pp. 159-168, (2009); Reilly T., Energetic of high-intensity exercise (soccer) with particular reference to fatigue, J Sport Sci, 15, pp. 257-263, (1997); Di Salvo V., Gregson W., Atkinson G., Tordoff P., Drust B., Analysis of highs intensity activity in premier league soccer, Int J Sport Med, 30, pp. 205-212, (2009); Bangsbo J., The physiology of soccer with special reference to intense intermittent exercise, Acta Phys Scand, 151, pp. 1-156, (1994); Al-Hazzaa H., Almuzaini K.S., Al-Refaee S.A., Ma S., Dafter-Dar M.Y., Al-Ghamedi A., Et al., Aerobic and anaerobic power characteristics of Saudi elite soccer players, J Sports Med Phys Fitness, 41, pp. 54-61, (2001); Santos-Silva P.R., Fonseca A.J., Castrol A.W., Greve Dandrea J.M., Hernandez A.J., Reproducibility of maximum aerobic power (Vo2max) among soccer players using a modifed heck protocol, Clinics Sao Paulo, 62, pp. 391-396, (2007); Soroka A., Bergier J., The relationship among the somatic characteristics, age and covered distance of soccer players, Hum Mov, 12, pp. 353-360, (2011); Clark P., Intermittent light intensity activity in english fa premier league soccer, Int J Perform Anal Sport, 10, pp. 139-151, (2010); Odetoyinbo K., Wooster B., Lane A., The effect of a succession of matches on the activity profles of professional soccer players, Science and Soccer VI, pp. 105-111, (2008); Rey E., Lago-Penas C., Lago-Ballesteros J., Casais L., Dellal A., The effect of cumulative fatigue on activity profles of professional soccer players during a congest fxture period, Biol Sport, 27, pp. 181-185, (2010); Carling C., Bloomfeld J., Nelsen L., Reilly T., The role of motion analysis in elite soccer: Contemporary performance measurement techniques and work-rate data, Sport Med, 38, pp. 839-862, (2008); Van Gool D., Van Gerven D., Boutmans J., The physiological load imposed on soccer players during real match-play, Science and Soccer, pp. 51-59, (1988); Di Salvo V., Baron R., Gonzalez-Haro G., Ch G., Pigozzi F., Bachl N., Sprinting analysis of elite soccer players during european champions league and uefa cup matches, J Sport Sci, 28, pp. 1489-1494, (2010); Dellal A., Chamari K., Owenl A., Wong D.P., Lago-Penas C., Hill-Haas S., Infuence of technical instructions on the physiological and physical demands of small-sided soccer games, Eur J Sport Sci, 11, pp. 341-346, (2011); Dellal A., Wong D.P., Moalla W., Chamari K., Physical and technical activity of soccer players in the French frst division-with special reference the playing position, Int Sport Med J, 11, pp. 278-290, (2010); Ch O., Poster S., Bernardini R., Rinaldo R., Di Prampero P.E., Energy cost and metabolic power in elite soccer: A new match analysis approach, Med Sci Sport Exer, 42, pp. 170-178, (2010); Wisloff U., Castagna C., Helgerud J., Jones R., Hoff J., Strong correlation of maximal squat strength with sprint performance and vertical jump height in elite soccer players, Brit J Sport Med, 38, pp. 285-288, (2004); Chamari K., Hachana Y., Kaovech F., Jeddi R., Moussa-Chamari J., Wis-Loff U., Endurance training and testing with the ball in young elite soccer players, Brit J Sport Med, 39, pp. 24-28, (2005); Aziz A.R., Chia M., Teh K.C., The relationship between maximal oxy-gen uptake and repeated sprint performance indices in feld hockey and soccer players, J Sports Med Phys Fitness, 40, pp. 195-200, (2000)","A. Soroka; University of Natural Sciences and Humanities in Siedlce, Faculty of Natural Science, Siedlce, B. Prusa 12 St., 08-110, Poland; email: wachmistrz_soroka@o2.pl","","Edizioni Minerva Medica","00224707","","JMPFA","25323478","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-85048247843" "Filben T.M.; Pritchard N.S.; Miller L.E.; Miles C.M.; Urban J.E.; Stitzel J.D.","Filben, Tanner M. (57209830121); Pritchard, N. Stewart (57219384344); Miller, Logan E. (55955121600); Miles, Christopher M. (56723593400); Urban, Jillian E. (36119491100); Stitzel, Joel D. (7003389866)","57209830121; 57219384344; 55955121600; 56723593400; 36119491100; 7003389866","Header biomechanics in youth and collegiate female soccer","2021","Journal of Biomechanics","128","","110782","","","","5","10.1016/j.jbiomech.2021.110782","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116868474&doi=10.1016%2fj.jbiomech.2021.110782&partnerID=40&md5=fb74bafe5fe3eadb4ee69b6d55d39791","Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States; School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, Winston-Salem, NC, United States; Department of Family and Community Medicine, Wake Forest School of Medicine, Winston-Salem, NC, United States","Filben T.M., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, Winston-Salem, NC, United States; Pritchard N.S., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, Winston-Salem, NC, United States; Miller L.E., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, Winston-Salem, NC, United States; Miles C.M., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, Department of Family and Community Medicine, Wake Forest School of Medicine, Winston-Salem, NC, United States; Urban J.E., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, Winston-Salem, NC, United States; Stitzel J.D., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech – Wake Forest University, Winston-Salem, NC, United States","Concerns about the effects of intentional heading in soccer have led to regulatory restrictions on headers for youth players. However, there is limited data describing how header exposure varies across age levels, and few studies have attempted to compare head impact exposure across different levels of play with the same sensor. Additionally, little is known about the biomechanical response of the brain to header impacts. The objective of this study was to evaluate head kinematics and the resulting tissue-level brain strain associated with intentional headers among youth and collegiate female soccer players. Six youth and 13 collegiate participants were instrumented with custom mouthpiece-based sensors measuring six-degree-of-freedom head kinematics of headers during practices and games. Kinematics of film-verified headers were used to drive impact simulations with a detailed brain finite element model to estimate tissue-level strain. Linear and rotational head kinematics and strain metrics, specifically 95th percentile maximum principal strain (ε1,95) and the area under the cumulative strain damage measure curve (VSM1), were compared across levels of play (i.e., youth vs. collegiate) while adjusting for session type and ball delivery method. A total of 483 headers (n = 227 youth, n = 256 collegiate) were analyzed. Level of play was significantly associated with linear acceleration, rotational acceleration, rotational velocity, ε1,95, and VSM1. Headers performed by collegiate players had significantly greater mean head kinematics and strain metrics compared to those performed by youth players (all p < .001). Targeted interventions aiming to reduce head impact magnitude in soccer should consider factors associated with the level of play. © 2021 Elsevier Ltd","Finite element modeling; Head impact; Mouthpiece; Subconcussion; Wearable sensor","Acceleration; Adolescent; Biomechanical Phenomena; Brain Concussion; Female; Head; Humans; Soccer; Universities; Biomechanics; Damage detection; Degrees of freedom (mechanics); Digital storage; Kinematics; Sports; Tissue; Wearable sensors; Biomechanical response; Brain strains; Head impact; Limited data; Mouthpiece; Soccer player; Subconcussion; Tissue levels; TO header; Wearable sensor; acceleration; adolescent; adult; Article; biomechanics; controlled study; female; finite element analysis; header biomechanics; human; kinematics; linear acceleration; linear kinematics; physiological stress; rotational acceleration; rotational head kinematics; rotational velocity; simulation; soccer; soccer player; tissue level brain strain; velocity; young adult; biomechanics; brain concussion; head; university; Finite element method","Allison W., (2019); Auger J., Markel J., Pecoski D.D., Leiva-Molano Id N., Talavage T.M., Leverenz L., Shen F., Naumanid E.A., Factors affecting peak impact force during soccer headers and implications for the mitigation of head injuries, PLoS One, pp. 1-15, (2020); Beckwith J.G., Zhao W., Ji S., Ajamil A.G., Bolander R.P., Chu J.J., McAllister T.W., Crisco J.J., Duma S.M., Rowson S., Broglio S.P., Guskiewicz K.M., Mihalik J.P., Anderson S., Schnebel B., Gunnar Brolinson P., Collins M.W., Greenwald R.M., Estimated brain tissue response following impacts associated with and without diagnosed concussion, Ann. 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Sport Med., 29, 1, (2019); Dezman Z.D.W., Ledet E.H., Kerr H.A., Neck strength imbalance correlates with increased head acceleration in soccer heading, Sports Health, 5, 4, pp. 320-326, (2013); Dick R.W., Is there a gender difference in concussion incidence and outcomes?, Br. J. 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Practice, 40, pp. 53-57, (2019); Hassan M.H.A., Taha Z., Finite element analysis of soccer heading, Procedia Eng., 112, pp. 46-51, (2015); Hildenbrand K.J., Vasavada A.N., Collegiate and high school athlete neck strength in neutral and rotated postures, J. Strength Conditioning Res., 27, 11, pp. 3173-3182, (2013); Kerr Z.Y., Chandran A., Nedimyer A.K., Arakkal A., Pierpoint L.A., Zuckerman S.L., Concussion incidence and trends in 20 high school sports, Pediatrics, 144, 5, (2019); Knowles B.M., Dennison C.R., Predicting cumulative and maximum brain strain measures from hybridiii head kinematics: a combined laboratory study and post-hoc regression analysis, Ann. Biomed. Eng., 45, 9, pp. 2146-2158, (2017); Koerte I.K., Lin A.P., Muehlmann M., Merugumala S., Liao H., Starr T., Kaufmann D., Mayinger M., Steffinger D., Fisch B., Karch S., Heinen F., Ertl-Wagner B., Reiser M., Stern R.A., Zafonte R., Shenton M.E., Altered neurochemistry in former professional soccer players without a history of concussion, J. Neurotrauma, 32, 17, pp. 1287-1293, (2015); Kuo C., Wu L.C., Ye P.P., Laksari K., Camarillo D.B., Kuhl E., Pilot findings of brain displacements and deformations during roller coaster rides, J. Neurotrauma, 34, 22, pp. 3198-3205, (2017); Kuo C., Wu L., Loza J., Senif D., Anderson S.C., Camarillo D.B., Janigro D., Comparison of video-based and sensor-based head impact exposure, PLoS One, 13, 6, (2018); Lamond L.C., Caccese J.B., Buckley T.A., Glutting J., Kaminski T.W., Linear acceleration in direct head contact across impact type, player position, and playing scenario in collegiate women's soccer players, J. Athletic Training, 53, 2, pp. 115-121, (2018); Lincoln A.E., Caswell S.V., Almquist J.L., Dunn R.E., Norris J.B., Hinton R.Y., Trends in concussion incidence in high school sports: a prospective 11-year study, Am. J. Sports Med., 39, 5, pp. 958-963, (2011); McCuen E., Svaldi D., Breedlove K., Kraz N., Cummiskey B., Breedlove E.L., Traver J., Desmond K.F., Hannemann R.E., Zanath E., Guerra A., Leverenz L., Talavage T.M., Nauman E.A., Collegiate women's soccer players suffer greater cumulative head impacts than their high school counterparts, J. Biomech., 48, 13, pp. 3720-3723, (2015); Miller L.E., Pinkerton E.K., Fabian K.C., Wu L.C., Espeland M.A., Lamond L.C., Miles C.M., Camarillo D.B., Stitzel J.D., Urban J.E., Characterizing head impact exposure in youth female soccer with a custom-instrumented mouthpiece, Res. Sports Med., 28, 1, pp. 55-71, (2020); Miller L.E., Urban J.E., Davenport E.M., Powers A.K., Whitlow C.T., Maldjian J.A., Stitzel J.D., Brain strain: computational model-based metrics for head impact exposure and injury correlation, Ann. Biomed. Eng., 49, 3, pp. 1083-1096, (2021); Miller L.E., Urban J.E., Kelley M.E., Powers A.K., Whitlow C.T., Maldjian J.A., Rowson S., Stitzel J.D., Evaluation of brain response during head impact in youth athletes using an anatomically accurate finite element model, J. Neurotrauma, 36, 10, pp. 1561-1570, (2019); Miller L.E., Urban J.E., Stitzel J.D., Development and validation of an atlas-based finite element brain model, Biomech. Modeling Mechanobiol., 15, 5, pp. 1201-1214, (2016); Miller L.E., Urban J.E., Stitzel J.D., Validation performance comparison for finite element models of the human brain, Comput. Methods Biomech. Biomed. 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Graphics Appl., 34, 5, pp. 8-13, (2014); Press J.N., Rowson S., Quantifying head impact exposure in collegiate women's soccer, Clin. J. Sport Med., 27, 2, pp. 104-110, (2017); Reynolds B.B., Patrie J., Henry E.J., Goodkin H.P., Broshek D.K., Wintermark M., Druzgal T.J., Effects of sex and event type on head impact in collegiate soccer, Orthop. J. Sports Med., 5, 4, pp. 1-10, (2017); Rich A.M., Filben T.M., Miller L.E., Tomblin B.T., Van Gorkom A.R., Hurst M.A., Barnard R.T., Kohn D.S., Urban J.E., Stitzel J.D., Development, validation and pilot field deployment of a custom mouthpiece for head impact measurement, Ann. Biomed. Eng., 47, 10, pp. 2109-2121, (2019); Rowson S., Duma S.M., Brain injury prediction: assessing the combined probability of concussion using linear and rotational head acceleration, Ann. Biomed. Eng., 41, 5, pp. 873-882, (2013); Saunders T.D., Le R.K., Breedlove K.M., Bradney D.A., Bowman T.G., Sex differences in mechanisms of head impacts in collegiate soccer athletes, Clin. Biomech., 74, pp. 14-20, (2020); Stewart W.F., Kim N., Ifrah C., Sliwinski M., Zimmerman M.E., Kim M., Lipton R.B., Lipton M.L., Heading frequency is more strongly related to cognitive performance than unintentional head impacts in amateur soccer players, Front. Neurol., 9, (2018); Takhounts E.G., Eppinger R.H., Campbell J.Q., Tannous R.E., Power E.D., Shook L.S., pp. 107-133, (2003); (2020); Wu L.C., Nangia V., Bui K., Hammoor B., Kurt M., Hernandez F., Kuo C., Camarillo D.B., In vivo evaluation of wearable head impact sensors, Ann. Biomed. Eng., 44, 4, pp. 1234-1245, (2016)","N.S. Pritchard; Winston-Salem, 575 N Patterson Avenue, Suite 530, 27101, United States; email: npritcha@wakehealth.edu","","Elsevier Ltd","00219290","","JBMCB","34656012","English","J. Biomech.","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85116868474" "Kawaguchi K.; Taketomi S.; Mizutani Y.; Inui H.; Yamagami R.; Kono K.; Kage T.; Takei S.; Fujiwara S.; Ogata T.; Tanaka S.","Kawaguchi, Kohei (57201548419); Taketomi, Shuji (37000367800); Mizutani, Yuri (57219010051); Inui, Hiroshi (55248120400); Yamagami, Ryota (56075885300); Kono, Kenichi (57200231149); Kage, Tomofumi (57212526837); Takei, Seira (55248367500); Fujiwara, Sayaka (7401827218); Ogata, Toru (7402000738); Tanaka, Sakae (55555616600)","57201548419; 37000367800; 57219010051; 55248120400; 56075885300; 57200231149; 57212526837; 55248367500; 7401827218; 7402000738; 55555616600","Dynamic Postural Stability Is Decreased During the Single-Leg Drop Landing Task in Male Collegiate Soccer Players With Chronic Ankle Instability","2022","Orthopaedic Journal of Sports Medicine","10","7","","","","","5","10.1177/23259671221107343","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85134925832&doi=10.1177%2f23259671221107343&partnerID=40&md5=e2b8a4af2d1635ec42d9d30810c85df3","The University of Tokyo Sports Science Institute, Tokyo, Japan; Department of Orthopaedic Surgery Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Department of Rehabilitation Medicine, The University of Tokyo, Tokyo, Japan","Kawaguchi K., The University of Tokyo Sports Science Institute, Tokyo, Japan, Department of Orthopaedic Surgery Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Taketomi S., The University of Tokyo Sports Science Institute, Tokyo, Japan, Department of Orthopaedic Surgery Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Mizutani Y., The University of Tokyo Sports Science Institute, Tokyo, Japan; Inui H., Department of Orthopaedic Surgery Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Yamagami R., Department of Orthopaedic Surgery Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Kono K., Department of Orthopaedic Surgery Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Kage T., Department of Orthopaedic Surgery Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Takei S., Department of Orthopaedic Surgery Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Fujiwara S., Department of Rehabilitation Medicine, The University of Tokyo, Tokyo, Japan; Ogata T., Department of Rehabilitation Medicine, The University of Tokyo, Tokyo, Japan; Tanaka S., Department of Orthopaedic Surgery Faculty of Medicine, The University of Tokyo, Tokyo, Japan","Background: Chronic ankle instability (CAI) is commonly encountered in soccer players. The feelings of instability and anxiety caused by CAI can lead to poor performance, such as difficulty in sharp change of direction during soccer play. The single-leg drop landing (SLDL) task is often used to evaluate dynamic postural stability. Purpose/Hypothesis: The purpose of this study was to clarify whether dynamic stability measured during SLDL is altered in male collegiate soccer players with CAI. The hypothesis was that athletes with CAI would show poor dynamic postural stability. Study Design: Controlled laboratory study. Methods: A total of 103 male collegiate soccer players were recruited, and their limbs were classified based on the new international CAI criteria. All players performed three 5-second SLDL trials on a force plate. The main outcome measures included time to stabilization of the horizontal ground-reaction force (GRF); peak GRF in the vertical, horizontal, and sagittal directions; and trajectory length of the center of pressure during SLDL. Results: Data from 59 CAI limbs and 147 non-CAI limbs were collected in this study. Time to stabilization of horizontal GRF was significantly longer in the CAI limbs (P <.001), and the peak GRFs in all directions were significantly lower in the CAI limbs (vertical, P <.001; horizontal, P <.001; sagittal, P =.001). Additionally, the trajectory length of the center of pressure was significantly greater in the CAI limbs (P =.004). Conclusion: Soccer players with CAI had decreased dynamic postural stability that led them to land softly when performing the SLDL task. Measurement of dynamic postural stability may be useful in the evaluation of CAI. Clinical Relevance: Our findings may be useful for strategies of daily training or as an evaluation tool. © The Author(s) 2022.","chronic ankle instability; dynamic postural stability; force plate; single-leg drop landing; soccer","growth hormone releasing factor; adult; ankle instability; ankle sprain; anterior cruciate ligament injury; anterior cruciate ligament reconstruction; Article; biomechanics; ground reaction force; human; kinematics; knee function; knee instability; knee radiography; lower limb; major clinical study; male; medical assessment; muscle strength; outcome assessment; physical activity; range of motion; soccer player; sport injury; standing; training; young adult","Anandacoomarasamy A., Barnsley L., Long term outcomes of inversion ankle injuries, Br J Sports Med, 39, 3, (2005); Brown C., Bowser B., Simpson K.J., Movement variability during single leg jump landings in individuals with and without chronic ankle instability, Clin Biomech (Bristol, Avon), 27, 1, pp. 52-63, (2012); Brown C., Padua D., Marshall S.W., Guskiewicz K., Individuals with mechanical ankle instability exhibit different motion patterns than those with functional ankle instability and ankle sprain copers, Clin Biomech (Bristol, Avon), 23, 6, pp. 822-831, (2008); Caulfield B., Garrett M., Changes in ground reaction force during jump landing in subjects with functional instability of the ankle joint, Clin Biomech (Bristol, Avon), 19, 6, pp. 617-621, (2004); Chan K.W., Ding B.C., Mroczek K.J., Acute and chronic lateral ankle instability in the athlete, Bull NYU Hosp Jt Dis, 69, 1, pp. 17-26, (2011); de Noronha M., Refshauge K.M., Crosbie J., Kilbreath S.L., Relationship between functional ankle instability and postural control, J Orthop Sports Phys Ther, 38, 12, pp. 782-789, (2008); De Ridder R., Willems T., Vanrenterghem J., Robinsonet M.A., Palmans T., Roosen P., Multi-segment foot landing kinematics in subjects with chronic ankle instability, Clin Biomech (Bristol, Avon), 30, 6, pp. 585-592, (2015); De Ridder R., Willems T., Vanrenterghem J., Robinson M.A., Roosen P., Lower limb landing biomechanics in subjects with chronic ankle instability, Med Sci Sports Exerc, 47, 6, pp. 1225-1231, (2015); Delahunt E., Monaghan K., Caulfield B., Changes in lower limb kinematics, kinetics, and muscle activity in subjects with functional instability of the ankle joint during a single leg drop jump, J Orthop Res, 24, 10, pp. 1991-2000, (2006); Doherty C., Bleakley C., Hertel J., Caulfield B., Ryan J., Deahunt E., Recovery from a first-time lateral ankle sprain and the predictors of chronic ankle instability: a prospective cohort analysis, Am J Sports Med, 44, 4, pp. 995-1003, (2016); Doherty C., Delahunt E., Caulfield B., Hertel J.R., Bleakley C., The incidence and prevalence of ankle sprain injury: a systematic review and meta-analysis of prospective epidemiological studies, Sport Med, 44, 1, pp. 123-140, (2014); Finch C.F., Cook J., Categorising sports injuries in epidemiological studies: the subsequent injury categorisation (SIC) model to address multiple, recurrent and exacerbation of injuries, Br J Sports Med, 48, 17, pp. 1276-1280, (2014); 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Taketomi S., Kawaguchi K., Mizutani Y., Et al., Anthropometric and musculoskeletal gender differences in young soccer players, J Sports Med Phys Fitness, 61, 9, pp. 1212-1218, (2021); Terada M., Gribble P.A., Jump landing biomechanics during a laboratory recorded recurrent ankle sprain, Foot Ankle Int, 36, 7, pp. 842-848, (2015); van Rijn R.M., van Os A.G., Bernsen R.M., Luijsterburg P.A., Koes B.W., Bierma-Zeinstra S.M., What is the clinical course of acute ankle sprains? A systematic literature review, Am J Sports Med, 121, 4, pp. 324-331, (2008); Wikstrom E.A., Tillman M.D., Chmielewski T.L., Cauraugh J.H., Naugle K.E., Borsa P.A., Dynamic postural control but not mechanical stability differs among those with and without chronic ankle instability, Scand J Med Sci Sports, 20, 1, pp. e137-e144, (2010); Woods C., Hawkins R., Hulse M., Hodson A., The Football Association Medical Research Programme: an audit of injuries in professional football. An analysis of ankle sprains, Br J Sports Med, 37, 3, pp. 233-238, (2003); Wright C.J., Arnold B.L., Ross S.E., Altered kinematics and time to stabilization during drop-jump landings in individuals with or without functional ankle instability, J Athl Train, 51, 1, pp. 5-15, (2016)","S. Taketomi; The University of Tokyo Sports Science Institute, Tokyo, Japan; email: takeos-tky@umin.ac.jp","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85134925832" "Hagen M.; Abraham C.; Ficklscherer A.; Lahner M.","Hagen, Marco (15821784900); Abraham, Christoph (58299104300); Ficklscherer, Andreas (23134657800); Lahner, Matthias (36088565000)","15821784900; 58299104300; 23134657800; 36088565000","Biomechanical study of plantar pressures during walking in male soccer players with increased vs. normal hip alpha angles","2015","Technology and Health Care","23","1","","93","100","7","5","10.3233/THC-140877","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84922615261&doi=10.3233%2fTHC-140877&partnerID=40&md5=6acc2ae71e5787f5c181a20b27d0f4ce","Biomechanics Laboratory, Department of Sport and Movement Sciences, University of Duisburg-Essen, Gladbecker Str. 182, Essen, 45141, Germany; Department of Orthopaedic Surgery, Physical Medicine and Rehabilitation, University Hospital of Munich, Munich, Germany; Department of Orthopaedic Surgery, Ruhr-University Bochum, St. Josef-Hospital, Bochum, Germany","Hagen M., Biomechanics Laboratory, Department of Sport and Movement Sciences, University of Duisburg-Essen, Gladbecker Str. 182, Essen, 45141, Germany; Abraham C., Biomechanics Laboratory, Department of Sport and Movement Sciences, University of Duisburg-Essen, Gladbecker Str. 182, Essen, 45141, Germany; Ficklscherer A., Department of Orthopaedic Surgery, Physical Medicine and Rehabilitation, University Hospital of Munich, Munich, Germany; Lahner M., Department of Orthopaedic Surgery, Ruhr-University Bochum, St. Josef-Hospital, Bochum, Germany","BACKGROUND: Femoroacetabular impingement (FAI) is accompanied by increased hip alpha angles, in particular in athletes with high impact sports. OBJECTIVE: The aim of our study was to investigate the dynamic function of the foot during walking in male soccer players with increased versus normal alpha angles. METHODS: Plantar pressures of 20 injury-free male soccer players were recorded during barefoot walking at 1.6 m/s. Ten subjects had bilaterally increased (>55°) (IA) and ten subjects normal (<50°) hip alpha angles (NA). Both standing and kicking leg were analyzed. RESULTS: Compared to NA, IA showed lower force-time-integrals (-23%; p< 0.01), pressure-time-integrals (-29%; p< 0.001) and relative loads (p< 0.05) under the heel. In IA contact area of the hallux is about 13% (p< 0.05) reduced. In IA relative loads are increased under the lateral midfoot (p< 0.05) and the second toe (p< 0.05). Higher loading of the lateral midfoot is also reflected in the increased force-time integral (+33%; p< 0.001). No differences between legs and no interactions, indicating a specifity in kicking or standing leg, are found. CONCLUSIONS: Compared to NA, soccer players with IA show a forward shifting of the center of pressure which indicates a compensatory mechanism of the foot during walking. © 2015-IOS Press and the authors.","Increased hip alpha angle; kicking leg; plantar pressures; soccer players; standing leg; walking","Adult; Athletes; Biomechanical Phenomena; Case-Control Studies; Electromyography; Femoracetabular Impingement; Foot; Hip Joint; Humans; Male; Pressure; Range of Motion, Articular; Reference Values; Soccer; Stress, Mechanical; Walking; adult; athlete; biomechanics; case control study; comparative study; electromyography; femoroacetabular impingement; foot; hip; human; joint characteristics and functions; male; mechanical stress; pathophysiology; physiology; pressure; procedures; reference value; soccer; walking","Beck M., Kalhor M., Leunig M., Ganz R., Hip morphology influences the pattern of damage to the acetabular cartilage: Femoroacetabular impingement as a cause of early osteoarthritits of the hip, J Bone Joint Surg Br., 87, 7, pp. 1012-1018, (2005); 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Clohisy J.C., Nunley R.M., Otto R.J., Schoenecker P.L., The frog-leg lateral radiographic accurately visualized hip cam impingement abnormalities, Clin Orthop Relat Res, 462, pp. 115-121, (2007); Johnson A.C., Sharman M.A., Ryan T.G., Femoroacetabular impingement in former high-level youth soccer players, Am J Sports Med, 40, 6, pp. 1342-1346, (2012); Naal F.D., Miozzari H.H., Wyss T.F., Notzli H.P., Surgical hip dislocation for the treatment of femoroacetabular impingement in high-level athletes, Am J Sports Med, 39, 3, pp. 544-550, (2011); Philippon M., Schenker M., Briggs K., Kuppersmith D., Femoroacetabular impingement in 45 professional athletes: Associated pathologies and return to sport following arthroscopic decompression, Knee Surg Sports Traumatol Arthrosc, 15, 7, pp. 908-914, (2007); Philippon M.J., Weiss D.R., Kuppersmith D.A., Briggs K.K., Hay C.J., Arthroscopic labral repair and treatment of femoroacetabular impingement in professional hockey players, Am J Sports Med, 38, 1, pp. 99-104, (2010); Lahner M., Walter P.A., Von Schulze P.C., Hagen M., Von Engelhardt L.V., Lukas C., Comparative study of femoroacetabular impingement (FAI) prevalence in male semiprofessional and amateur soccer players, Arch Orthop Trauma Surg, 134, 8, pp. 1135-1141, (2014); Lamontagne M., Kennedy M.J., Beaule P.E., The effect of cam FAI on hip and pelvic motion during maximum squat, Clin Orthop Relat Res, 467, pp. 645-650, (2009); Kennedy M.J., Lamontagne M., Beaule P.E., Femoracetabular impingement alters hip and pelvic biomechanics during gait walking biomechanics of FAI, Gait Posture, 30, pp. 41-44, (2009); Lahner M., Von Schulze P.C., Walter P.A., Lukas C., Falarzik A., Daniildis K., Von Engelhardt L.V., Abraham C., Hennig E.M., Hagen M., Biomechanical and functional indicators in male semiprofessional soccer players with increased hip alpha angles vs. Amateur soccer players, BMC Musculoskelet Disord, 15, (2014); Beaule P.E., Leduff M.J., Zaragoza E., Quality of life following femoral head-neck osteochondroplasty for femoroacetabular impingement, J Bone Joint Surg Am., 89, pp. 773-779, (2007); Knutzen K., Price A., Lower extremity static and dynamic relationships with rearfoot motion in gait, J Am Pod Med Assoc, 84, pp. 171-180, (1994); Snyder K.R., Earl J.E., O'connor K.M., Ebersole K.T., Resistance training is accompanied by increases in hip strength and changes in lower extremity biomechanics during running, Clin Biomech, 24, pp. 26-34, (2009); Brody D., Techniques in the evaluation and treatment of the injured runner, Orthop Clin North Am., 13, pp. 541-558, (1982); Menz H., Alternative techniques for the clinical assessment of foot pronation, J Am Pod Med Assoc, 88, pp. 119-129, (1998); Mueller M., Host J., Norton B., Navicular drop as a composite measure of excessive pronation, J Am Pod Med Assoc, 83, pp. 198-202, (1993); Hennig E.M., Rosenbaum D., Pressure distribution patterns under the feet of children in comparison to adults, Foot Ankle, 11, pp. 306-311, (1991); Cavanagh P.R., Ulbrecht J.S., Clinical plantar pressure measurement in diabetes: Rationale and methodology, Foot, 4, pp. 123-135, (1994); Lafortune M.A., Hennig E.M., Cushioning properties of footwear during walking: Accelerometer and force platform measurements, Clin Biomech, 7, 3, pp. 181-184, (1992); Lieberman D.E., Venkadesan M., Werbel W.A., Daoud A.I., D'andrea S., Davis I.S., Mang'eni R.O., Pitsiladis Y., Foot strike patterns and collision forces in habitually barefoot versus shod runners, Nature, 463, pp. 531-535, (2010); Nigg B.M., The role of impact forces and foot pronation: A new paradigm, Clin J Sport Med, 11, pp. 2-9, (2001); Lahner M., Jahnke N.L., Zirke S., Teske W., Vetter G., Von Schulze Pellengahr C., Daniilidis K., Hagen M., Von Engelhardt L.V., The deviation of the mechanical leg axis correlates with an increased hip alpha angle and could be a predictor of femoroacetabular impingement, Int Orthop, 38, pp. 19-25, (2014)","","","IOS Press","09287329","","THCAE","25391528","English","Technol. Health Care","Article","Final","","Scopus","2-s2.0-84922615261" "Kato Daiichiro; Yamada Mitsuho; Abe Kazuo; Ishikawa Akio; Obata Masayoshi","Kato, Daiichiro (7005526147); Yamada, Mitsuho (7405745700); Abe, Kazuo (55464416800); Ishikawa, Akio (57205017568); Obata, Masayoshi (7103335143)","7005526147; 7405745700; 55464416800; 57205017568; 7103335143","Analysis of the camera work of television cameramen while tracking subjects","1996","Terebijon Gakkaishi (Journal of the Institute of Television Engineers of Japan)","50","12","","1941","1948","7","5","10.3169/itej1978.50.1941","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0030362643&doi=10.3169%2fitej1978.50.1941&partnerID=40&md5=98786623a331dae61701ddf2608655d2","NHK Science and Technical Research, Lab, Tokyo, Japan","Kato Daiichiro, NHK Science and Technical Research, Lab, Tokyo, Japan; Yamada Mitsuho, NHK Science and Technical Research, Lab, Tokyo, Japan; Abe Kazuo, NHK Science and Technical Research, Lab, Tokyo, Japan; Ishikawa Akio, NHK Science and Technical Research, Lab, Tokyo, Japan; Obata Masayoshi, NHK Science and Technical Research, Lab, Tokyo, Japan","We analyzed the shooting technique of cameramen in relayed soccer telecast which is difficult to predict subjects'movement. We tested how cameramen confirm the subjects and how control the camera, by detecting their eye movement and velocity of the camera. Outcomes therefrom: Cameramen shoot by repeatedly paying attention of approximately 50 msec at a time to thesurroundings. They always leave space in front of a moving subject, and the quantity of the space depends on the subject's size in the image and its velocity At an abrupt change in the subject's movement, sense it and perform the optimal correction in a very short time of about 300 msec. The maximum acceleration produced during panning was some 200 deg/sec2 while on air and 300 deg/sec2 while searching.","","Acceleration; Biomechanics; Velocity; Video cameras; Television cameramen; Eye movements","","","","Inst of Television Engineers of Japan","03866831","","TEGAD","","Japanese","Terebijon Gakkaishi","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-0030362643" "Della Villa F.; Buckthorpe M.; Grassi A.; Nabiuzzi A.; Tosarelli F.; Zaffagnini S.; Virgile A.; Della Villa S.","Della Villa, Francesco (55780654000); Buckthorpe, Matthew (54783962800); Grassi, Alberto (57205264407); Nabiuzzi, Alberto (57217393167); Tosarelli, Filippo (57217386930); Zaffagnini, Stefano (7003438311); Virgile, Adam (57210345579); Della Villa, Stefano (8306317600)","55780654000; 54783962800; 57205264407; 57217393167; 57217386930; 7003438311; 57210345579; 8306317600","Infographic. Systematic video analysis of ACL injuries in professional male football (soccer): Injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases","2021","British Journal of Sports Medicine","55","7","","405","406","1","6","10.1136/bjsports-2020-103241","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85094923514&doi=10.1136%2fbjsports-2020-103241&partnerID=40&md5=63c7d4adceae8a84fa41e2a7df2ef5e5","Education and Research Department, Isokinetic Fifa Medical Centre of Excellence, Bologna, Italy; Faculty of Sport, Health and Applied Science, St Mary's University, Twickenham, London, United Kingdom; IIa Clinica Ortopedica e Traumatologica, Istituto Ortopedico Rizzoli Istituto di Ricovero e Cura A Carattere Scientifico, Bologna, Italy; College of Nursing and Health Sciences, University of Vermont, Burlington, VT, United States","Della Villa F., Education and Research Department, Isokinetic Fifa Medical Centre of Excellence, Bologna, Italy; Buckthorpe M., Education and Research Department, Isokinetic Fifa Medical Centre of Excellence, Bologna, Italy, Faculty of Sport, Health and Applied Science, St Mary's University, Twickenham, London, United Kingdom; Grassi A., IIa Clinica Ortopedica e Traumatologica, Istituto Ortopedico Rizzoli Istituto di Ricovero e Cura A Carattere Scientifico, Bologna, Italy; Nabiuzzi A., Education and Research Department, Isokinetic Fifa Medical Centre of Excellence, Bologna, Italy; Tosarelli F., Education and Research Department, Isokinetic Fifa Medical Centre of Excellence, Bologna, Italy; Zaffagnini S., IIa Clinica Ortopedica e Traumatologica, Istituto Ortopedico Rizzoli Istituto di Ricovero e Cura A Carattere Scientifico, Bologna, Italy; Virgile A., College of Nursing and Health Sciences, University of Vermont, Burlington, VT, United States; Della Villa S., Education and Research Department, Isokinetic Fifa Medical Centre of Excellence, Bologna, Italy","[No abstract available]","injury prevention; knee ACL; knee injuries","","Walden M., Hagglund M., Magnusson H., Et al., ACL injuries in men?s professional football: A 15-year prospective study on time trends and return-To-play rates reveals only 65% of players still play at the top level 3 years after ACL rupture, Br J Sports Med, 50, pp. 744-750, (2016); Grassi A., MacChiarola L., Filippini M., Et al., Epidemiology of anterior cruciate ligament injury in Italian first division soccer players, Sports Health, 2020, 12, pp. 279-288; Della Villa F., Buckthorpe M., Grassi A., Et al., Systematic video analysis of ACL injuries in professional male football (soccer): Injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, Br J Sports Med, 2020, 54, pp. 1423-1432; Walden M., Krosshaug T., Bjorneboe J., Et al., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: A systematic video analysis of 39 cases, Br J Sports Med, 49, pp. 1452-1460, (2015); Johnston J.T., Mandelbaum B.R., Schub D., Et al., Video analysis of anterior cruciate ligament tears in professional American football athletes, Am J Sports Med, 2018, 46, pp. 862-868; Koga H., Nakamae A., Shima Y., Et al., Mechanisms for noncontact anterior cruciate ligament injuries: Knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, pp. 2218-2225, (2010)","F. Della Villa; Education and Research Department, Isokinetic Fifa Medical Centre of Excellence, Bologna, Italy; email: f.dellavilla@isokinetic.com","","BMJ Publishing Group","03063674","","BJSMD","","English","Br. J. Sports Med.","Note","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85094923514" "Sandrey M.A.; Zebas C.J.; Bast J.D.","Sandrey, Michelle A. (6603301600); Zebas, Carole J. (6602658966); Bast, Joseph D. (55950287900)","6603301600; 6602658966; 55950287900","Rear-foot motion in soccer players with excessive pronation under 4 experimental conditions","2001","Journal of Sport Rehabilitation","10","2","","143","154","11","5","10.1123/jsr.10.2.143","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035000462&doi=10.1123%2fjsr.10.2.143&partnerID=40&md5=250eecb31d92778dd4abead01a6032e3","School of Physical Education, West Virginia University, Morgantown, WV 26506-6116, United States; Dept. of Health, Sport and Exercise Science, University of Kansas, Lawrence, KS 66045, United States; Dept. of Cell and Tissue Biology, Graduate School, University of Kansas Medical Center, Kansas City, KS 66160, United States","Sandrey M.A., School of Physical Education, West Virginia University, Morgantown, WV 26506-6116, United States; Zebas C.J., Dept. of Health, Sport and Exercise Science, University of Kansas, Lawrence, KS 66045, United States; Bast J.D., Dept. of Cell and Tissue Biology, Graduate School, University of Kansas Medical Center, Kansas City, KS 66160, United States","Context: Soccer is a sport that includes running in several different directions. For this reason, it is important for the shoe to control the motion of the foot. Objective: This study was undertaken to compare rear-foot motion in high school soccer players with excessive pronation under the experimental conditions of barefoot (BF), experimental shoe (ESS), experimental shoe with arch support (ESSAS), and the experimental shoe with pronated lacing technique (ESSPLT). Design: 1 × 4 factorial. Setting: Biomechanics laboratory. Patients or Other Participants: 20 male and female subjects with excessive pronation in both feet (N = 40) as determined by navicular height and arch index. Interventions: The subjects were filmed with a 2D Peak Performance video system as they ran a specified course. Rear-foot motion was determined by rear-foot angle measurements from the point of foot-flat to heel off. Main Outcomes Measures: There would be a difference with rear-foot motion between the three experimental conditions. Results: Results of the study indicated significant (P ± .05) differences between the conditions of BF and ESS, BF and ESSAS, BF and ESSPLT, and ESS and ESSPLT. Conclusions: In the experimental conditions, the shoe with the pronated lacing technique was superior in its effectiveness to control rear-foot motion.","Arch support; Eversion; Pronated shoelacing technique","article; athlete; biomechanics; clinical article; female; foot; human; leg movement; male; orthosis; shoe; sport; videorecording","Nigg B.M., Segesser B., Biomechanical and orthopedic concepts in sport shoe construction, Med Sci Sports Exerc, 24, pp. 593-602, (1992); Stacoff A., Denoth J., Kalin X., Stussi E., Running injuries and shoe construction: Some possible relationships, Int J Sport Biomech, 4, pp. 342-357, (1988); Stacoff A., Kalin X., Stussi E., The effects of shoes on the torsion and rearfoot motion in running, Med Sci Sports Exerc, 23, pp. 482-490, (1991); Janisse D.J., The art and science of fitting shoes, Foot Ankle, 13, pp. 257-262, (1992); McPoil T.G., Footwear, Phys Ther, 68, pp. 1857-1865, (1988); Brunick T., Solo shoes, Athlete's Footwear Rep, pp. 2-3, (1996); Clarke T.E., Frederick E.C., Hamill C.L., The effect of shoe design parameters on the rearfoot control in running, Med Sci Sports Exerc, 15, pp. 376-381, (1983); Nawoczenski D.A., Cook T.M., Saltzman C.L., The effect of foot orthotics on three-dimensional kinematics of the leg and rearfoot during running, J Orthop Sports Phys Ther, 21, pp. 317-327, (1995); Brown G.P., Donatelli R., Catlin P.A., Wooden M.J., The effect of two types of foot orthoses on rearfoot mechanics, J Orthop Sports Phys Ther, 21, pp. 258-267, (1995); Nigg B.M., Kahn A., Fisher V., Stefanyshyn D.J., Effect of shoe insert construction on foot and leg movement, Med Sci Sports Exerc, 30, pp. 550-555, (1998); Nigg B.M., Nurse M.A., Stefanyshyn D.J., Shoe inserts and orthotics for sports and physical activities, Med Sci Sports Exerc, 31, (1999); Brunick T., Lacing tricks for a better fit, Athlete's Footwear Rep, (1994); Ellis J., Lacing lessons, Runner's World, 22, (1986); Lobb W., Tying the knot, Runner's World, 26, 10, pp. 48-52, (1991); Lacing patterns make a difference, Running Fitness, 15, 6, (1997); Nigg B.M., Bahlsen A.H., Denoth J., Leuthi S.M., Stacoff A., Factors influencing kinetic and kinematic variables in running, Biomechanics of Running Shoes, pp. 139-159, (1986); McCulloch M.U., Brunt D., Vander Linden D., The effect of foot orthotics and gait velocity on lower limb kinematics and temporal events of stance, J Orthop Sports Phys Ther, 17, pp. 2-10, (1993); Smith L.S., Clarke T.E., Hamill C.L., Santopietro F., The effect of soft and semi-rigid orthoses upon rearfoot movement in running, J Am Podiatr Med Assoc, 76, pp. 227-233, (1986); Schulthies S.S., Draper D.O., A modified low-dye taping technique to support the medial longitudinal arch and reduce excessive pronation, J Athletic Train, 30, pp. 266-268, (1995); Sandrey M.A., Zebas C.J., Adeyanju M., Prevention of injuries in excessive pronators through proper soccer shoe fitting, J Athletic Train, 31, pp. 231-234, (1996); Finestone A., Shlamkovitch N., Eldad A., Karp A., Milgrom C., A prospective study of the effect of the appropriateness of foot-shoe fit and training shoe type on the incidence of overuse injuries among infantry recruits, Milit Med, 157, pp. 489-490, (1992); Sandrey M.A., The Effect of the Quality of Fit of Soccer Shoes on Rearfoot Motion in Players with Excessive Pronation [Doctoral Dissertation], (1995); Mueller M.J., Host J.V., Norton B.J., Navicular drop as a composite measure of excessive pronation, J Am Podiatr Med Assoc, 83, pp. 198-202, (1993); Cavanagh P.R., Rodgers M.M., The arch index: A useful measurement from footprints, J Biomech, 20, pp. 547-551, (1987); Hawes M.R., Nachbauer W., Sovak D., Nigg B.M., Footprint parameters as a measure of arch height, Foot Ankle, 13, pp. 22-26, (1992); Wen D.Y., Puffer J.C., Schmalzreid T.P., Lower extremity alignment and risk of overuse injuries in runners, Med Sci Sports Exerc, 29, pp. 1291-1298, (1997); Reinschmidt C., Stacoff A., Stussi E., Heel movement within a court shoe, Med Sci Sports Exerc, 24, pp. 1390-1395, (1992); Cornwall M.W., McPoil T.G., Reducing two-dimensional rearfoot motion variability during walking, J Am Podiatr Med Assoc, 83, pp. 394-397, (1993); McPoil T.G., Brocato R.S., The foot and ankle: Biomechanical evaluation and treatment, Orthopaedic and Sports Physical Therapy, 2, (1985); Stewart D.J., The Effects of Prolonged Running on Ground Reaction Force Patterns Wearing Shoes of Different Midsole Durometers [Doctoral Dissertation], (1985); Johanson M.A., Donatelli R., Wooden M.J., Andrew P.D., Cummings G.S., Effects of three different posting methods on controlling abnormal subtalar pronation, Phys Ther, 74, pp. 149-161, (1994); Novick A., Kelley D.L., Position and movement changes of the foot with orthotic intervention during the loading response of gait, J Orthop Sports Phys Ther, 11, pp. 301-312, (1990); Burkett L.N., Kohrt W.M., Buchbinder R., Effects of shoes and foot orthotics on VO2 and selected frontal plane knee kinematics, Med Sci Sports Exerc, 17, pp. 158-163, (1985)","","","Human Kinetics Publishers Inc.","10566716","","JSRHE","","English","J. Sport Rehabil.","Article","Final","","Scopus","2-s2.0-0035000462" "Lewis G.; Towlson C.; Roversi P.; Domogalla C.; Herrington L.; Barrett S.","Lewis, Glyn (57438646600); Towlson, Christopher (23996181100); Roversi, Pietro (57438646700); Domogalla, Chris (57438544300); Herrington, Lee (7004230643); Barrett, Steve (55390945900)","57438646600; 23996181100; 57438646700; 57438544300; 7004230643; 55390945900","Quantifying volume and high-speed technical actions of professional soccer players using foot-mounted inertial measurement units","2022","PLoS ONE","17","2 February","e0263518","","","","6","10.1371/journal.pone.0263518","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123972603&doi=10.1371%2fjournal.pone.0263518&partnerID=40&md5=b68eb39c7c781b520757fa90046ec8ce","Performance and Medicine Department, Norwich City F.C., Norwich, United Kingdom; Sport Science Department, University of Salford, Norwich, United Kingdom; Department of Sport Health and Exercise Science, University of Hull, Kingston upon Hull, United Kingdom; Sport Science Performance Analysis Research and Coaching (SPARC), PlayerMaker, London, United Kingdom","Lewis G., Performance and Medicine Department, Norwich City F.C., Norwich, United Kingdom, Sport Science Department, University of Salford, Norwich, United Kingdom; Towlson C., Department of Sport Health and Exercise Science, University of Hull, Kingston upon Hull, United Kingdom; Roversi P., Performance and Medicine Department, Norwich City F.C., Norwich, United Kingdom; Domogalla C., Performance and Medicine Department, Norwich City F.C., Norwich, United Kingdom; Herrington L., Sport Science Department, University of Salford, Norwich, United Kingdom; Barrett S., Sport Science Performance Analysis Research and Coaching (SPARC), PlayerMaker, London, United Kingdom","Aims The aims of the study were two-fold: I) examine the validity and reliability of high-speed kicking actions using foot-mounted inertial measurement unit's (IMU), ii) quantify soccer players within-microcycle and inter-positional differences in both the frequency and speed of technical actions. Methods During the in-season phase (25 weeks) of the UK domestic season, 21 professional soccer player ball releases, high-speed ball releases and ball release index were analysed. Pearson product-moment correlation coefficient and confidence intervals were used to determine the validity between the systems, whilst a general linear mixed model analysis approach was used to establish estimated marginal mean values for total ball releases, high-speed ball releases and ball release index. Results Good concurrent validity was observed for ball release velocity and high-speed kicks against a high-speed camera (r2- 0.96, CI 0.93-0.98). Ball releases, high-speed ball releases and ball release index all showed main effects for fixture proximity (p>0.001), playing positions (p>0.001) and across different training categories (p>0.001). The greatest high-speed ball releases were observed on a match-day (MD)+1 (17.6 ± 11.9; CI- 16.2 to 19) and MD-2 (16.8 ± 15; CI- 14.9 to 18.7), with MD+1 exhibiting the highest number of ball releases (161.1 ± 51.2; CI- 155.0 to 167.2) and ball release index (145.5 ± 45.2; CI- 140.1 to 150.9) across all fixture proximities. Possessions (0.3 ± 0.9; CI- 0.3 to 0.4) and small-sided games (1.4 ± 1.6; CI- 1.4 to 1.5), had the lowest values for high-speed ball releases with technical (6.1 ± 7.2; CI- 5.7 to 6.6) and tactical (10.0 ± 10.5; CI- 6.9 to 13.1) drills showing the largest high-speed ball releases. Conclusions The present study provides novel information regarding the quantification of technical actions of professional soccer players. Insights into absolute and relative frequency and intensity of releases in different drill types, provide practitioners with valuable information on technical outputs that can be manipulated during the process of planning training programmes to produce desired outcomes. Both volume and speed of ball release actions should be measured, when monitoring the technical actions in training according to fixture proximity, drill type and player position to permit enhanced training prescription. © 2022 Lewis et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.","","Adult; Athletes; Athletic Performance; Biomechanical Phenomena; Foot; Humans; Leg; Male; Movement; Muscle, Skeletal; Reproducibility of Results; Running; Soccer; adult; Article; confidence interval; correlation coefficient; foot; frequency; human; human experiment; male; normal human; physical activity; position; reliability; soccer player; training; United Kingdom; velocity; volume; athlete; athletic performance; biomechanics; foot; leg; movement (physiology); physiology; reproducibility; running; skeletal muscle; soccer","Akenhead R, Nassis GP., Training Load and Player Monitoring in High-Level Football: Current Practice and Perceptions, Int J Sports Physiol Perform, 11, 5, pp. 587-593, (2016); Barrett S, Varley MC, Hills SP, Russell M, Reeves M, Hearn A, Et al., Understanding the Influence of the Head Coach on Soccer Training Drills-An 8 Season Analysis, Applied Sciences, 10, 22, (2020); 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Owen AL, Djaoui L, Newton M, Malone S, Mendes B., A contemporary multi-modal mechanical approach to training monitoring in elite professional soccer, Science and Medicine in Football, 1, 3, pp. 216-221, (2017); Ade JD, Drust B, Morgan OJ, Bradley PS., Physiological characteristics and acute fatigue associated with position-specific speed endurance soccer drills: Production vs maintenance training, Science and Medicine in Football, 5, 1, pp. 6-17, (2021); Roberts SJ, Rudd JR, Reeves MJ., Efficacy of using non-linear pedagogy to support attacking players' individual learning objectives in elite-youth football: A randomised cross-over trial, J Sports Sci, 38, 11-12, pp. 1454-1464, (2020); Opar DA, Williams MD, Shield AJ., Hamstring Strain Injuries, Sports Medicine, 42, 3, pp. 209-226, (2012); Ueblacker P, Muller-Wohlfahrt HW, Hinterwimmer S, Imhoff AB, Feucht MJ., Suture anchor repair of proximal rectus femoris avulsions in elite football players, Knee Surg Sports Traumatol Arthrosc, 23, 9, pp. 2590-2594, (2015); Navandar A, Veiga S, Torres G, Chorro D, Navarro E., A previous hamstring injury affects kicking mechanics in soccer players, J Sports Med Phys Fitness, 58, 12, pp. 1815-1822, (2018); Hill-Haas SV, Dawson B, Impellizzeri FM, Coutts AJ., Physiology of small-sided games training in football: A systematic review, Sports Med, 41, 3, pp. 199-220, (2011); Towlson C, MacMaster C, Goncalves B, Sampaio J, Toner J, MacFarlane N, Et al., The effect of biobanding on physical and psychological indicators of talent identification in academy soccer players, Science and Medicine in Football, pp. 1-13, (2020)","C. Towlson; Department of Sport Health and Exercise Science, University of Hull, Kingston upon Hull, United Kingdom; email: c.towlson@hull.ac.uk","","Public Library of Science","19326203","","POLNC","35113962","English","PLoS ONE","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85123972603" "Merino-Muñoz P.; Pérez-Contreras J.; Aedo-Muñoz E.; Bustamante-Garrido A.","Merino-Muñoz, Pablo (57221328367); Pérez-Contreras, Jorge (57221334278); Aedo-Muñoz, Esteban (57202025612); Bustamante-Garrido, Alejandro (57193238400)","57221328367; 57221334278; 57202025612; 57193238400","Relationship between jump height and rate of braking force development in professional soccer players.","2020","Journal of Physical Education and Sport","20","6","487","3614","3621","7","6","10.7752/jpes.2020.06487","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85098892442&doi=10.7752%2fjpes.2020.06487&partnerID=40&md5=cb44ea36783ed20e9962976906d8b981","Audax Club Sportivo italiano, rama femenina, Chile; Laboratorio de Ciencias de la Actividad Física, el Deporte y la Salud, Facultad de Ciencias Médicas, Universidad de Santiago de Chile (USACH), Chile; Selecciones Nacionales Juveniles ANFP, Chile; Departamento de Educación Física, Deportes y Recreación, Universidad Metropolitana de Ciencias de la Educación (UMCE), Chile; Laboratorio de Biomecánica, Unidad de Ciencias Aplicadas al Deporte, Instituto Nacional de Deportes (IND), Chile; Departamento de Kinesiología, Universidad de CHILE, Chile","Merino-Muñoz P., Audax Club Sportivo italiano, rama femenina, Chile, Laboratorio de Ciencias de la Actividad Física, el Deporte y la Salud, Facultad de Ciencias Médicas, Universidad de Santiago de Chile (USACH), Chile; Pérez-Contreras J., Selecciones Nacionales Juveniles ANFP, Chile, Departamento de Educación Física, Deportes y Recreación, Universidad Metropolitana de Ciencias de la Educación (UMCE), Chile; Aedo-Muñoz E., Laboratorio de Ciencias de la Actividad Física, el Deporte y la Salud, Facultad de Ciencias Médicas, Universidad de Santiago de Chile (USACH), Chile, Selecciones Nacionales Juveniles ANFP, Chile, Laboratorio de Biomecánica, Unidad de Ciencias Aplicadas al Deporte, Instituto Nacional de Deportes (IND), Chile; Bustamante-Garrido A., Departamento de Educación Física, Deportes y Recreación, Universidad Metropolitana de Ciencias de la Educación (UMCE), Chile, Laboratorio de Biomecánica, Unidad de Ciencias Aplicadas al Deporte, Instituto Nacional de Deportes (IND), Chile, Departamento de Kinesiología, Universidad de CHILE, Chile","Explosive force is the ability to increase force or torque as rapidly as possible during a voluntary contraction from a low level or at rest and is primarily quantified as the rate of force development (RFD). A high RFD is considered a determinant of sports performance. Vertical jump has been shown to be dependent on RFD, and this test is widely used to evaluate the explosive strength capability of the lower limbs, as it has been associated with other skills that are determinants in sport such as strength, power, speed, agility and changes of direction.Objective: To know the relationship between jump height (JH) and JH normalized to height subject (JHn) calculated through flight time (FT) and the rate of force development (RFD) of the eccentric braking phase. Method: The sample was of a total of 21 male professional soccer players, from to a first division B team in Chile (age = 24.4 ± 4.0 years; body mass = 76.4 ± 7.1 kg.; height = 1.77 ± 0.08 meters; experience = 7.0 ± 4.5 years). Vertical jump (CMJ) was evaluated using two PASCO PS-2142 force platforms. Statistical tests of association (Pearson's r) and prediction (linear regression) were performed. Results: No significant relationships were found between JH and JHnwith the variables for the RFD of the eccentric braking. Conclusion: From the results found in this study, it is possible to conclude that the jump height calculated through the flight time and normalized to the height of the subject, does not present a significant association with the rate of development of eccentric braking force and normalized to body weight, which allows recognizing that the jump height is not a direct indicator of explosive force of the lower limb. © 2020, Editura Universitatii din Pitesti. All rights reserved.","Biomechanics; Sport; Task performance and analysis; Vertical jump","","Aagaard P., Simonsen E. B., Andersen J. 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D., Rate of Force Development, Muscle Architecture, and Performance in Young Competitive Track and Field Throwers, Journal of Strength and Conditioning Research, 30, 1, pp. 81-92, (2016)","J. Pérez-Contreras; Selecciones Nacionales Juveniles ANFP, Chile; email: jorge.perez_c@umce.cl; J. Pérez-Contreras; Departamento de Educación Física, Deportes y Recreación, Universidad Metropolitana de Ciencias de la Educación (UMCE), Chile; email: jorge.perez_c@umce.cl","","Editura Universitatii din Pitesti","22478051","","","","English","J. Phys. Educ. Sport","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85098892442" "Hart J.M.; Garrison J.C.; Palmieri-Smith R.; Kerrigan D.C.; Ingersoll C.D.","Hart, Joseph M. (9037161300); Garrison, J. Craig (25223272400); Palmieri-Smith, Riann (15846505300); Kerrigan, D. Casey (35547273200); Ingersoll, Christopher D. (7005436083)","9037161300; 25223272400; 15846505300; 35547273200; 7005436083","Lower extremity joint moments of collegiate soccer players differ between genders during a forward jump","2008","Journal of Sport Rehabilitation","17","2","","137","147","10","6","10.1123/jsr.17.2.137","https://www.scopus.com/inward/record.uri?eid=2-s2.0-52149112741&doi=10.1123%2fjsr.17.2.137&partnerID=40&md5=f76b63cf90c33608deb54badd484ebdb","Orthopedic Surgery Department, University of Virginia, Charlottesville, United States; Steadman Hawkins Clinic of the Carolinas; Division of Kinesiology, University of Michigan, Ann Arbor, United States; Physical Medicine and Rehabilitation Department, University of Virginia; Human Services, University of Virginia","Hart J.M., Orthopedic Surgery Department, University of Virginia, Charlottesville, United States; Garrison J.C., Steadman Hawkins Clinic of the Carolinas; Palmieri-Smith R., Division of Kinesiology, University of Michigan, Ann Arbor, United States; Kerrigan D.C., Physical Medicine and Rehabilitation Department, University of Virginia; Ingersoll C.D., Human Services, University of Virginia","Context: Lower extremity kinetics while performing a single-leg forward jump landing may help explain gender biased risk for noncontact anterior cruciate ligament injury. Objective: Gender comparison of lower extremity joint angles and moments. Design: Static groups comparison. Setting: Motion analysis laboratory. Patients or Other Participants: 8 male and 8 female varsity, collegiate soccer athletes. Intervention: 5 single-leg landings from a 100cm forward jump. Main Outcome Measures: Peak and initial contact external joint moments and joint angles of the ankle, knee, and hip. Results: At initial heel contact, males exhibited a adduction moment whereas females exhibited a abduction moment at the hip. Females also had significantly less peak hip extension moment and significantly less peak hip internal rotation moment than males had. Females exhibited greater knee adduction and hip internal rotation angles than men did. Conclusions: When decelerating from a forward jump, gender differences exist in forces acting at the hip. © 2008 Human Kinetics, Inc.","","Adolescent; Adult; Biomechanics; Female; Humans; Joints; Locomotion; Lower Extremity; Male; Risk Assessment; Sex Factors; Soccer; Videotape Recording; adolescent; adult; article; biomechanics; female; human; joint; leg; locomotion; male; physiology; risk assessment; sex difference; sport; videorecording","Arendt E.A., Agel J., Dick R., Anterior cruciate ligament injury patterns among collegiate men and women, J Athl Train, 34, 2, pp. 86-92, (1999); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes. 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M. Hart; Orthopedic Surgery Department, University of Virginia, Charlottesville, United States; email: jmh3zf@Virginia.edu","","Human Kinetics Publishers Inc.","10566716","","JSRHE","18515913","English","J. Sport Rehabil.","Article","Final","","Scopus","2-s2.0-52149112741" "Thompson J.W.; Plastow R.; Kayani B.; Moriarty P.; Asokan A.; Haddad F.S.","Thompson, Joshua W. (57222559910); Plastow, Ricci (55969676000); Kayani, Babar (53979939900); Moriarty, Peter (57215064201); Asokan, Ajay (57222549251); Haddad, Fares S. (7203033976)","57222559910; 55969676000; 53979939900; 57215064201; 57222549251; 7203033976","Surgical Repair of Distal Biceps Femoris Avulsion Injuries in Professional Athletes","2021","Orthopaedic Journal of Sports Medicine","9","3","","","","","6","10.1177/2325967121999643","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85103226058&doi=10.1177%2f2325967121999643&partnerID=40&md5=9c90c65373ab0b7b5b65e1c4adcd7e66","Department of Orthopaedic Surgery, The Princess Grace Hospital, London, United Kingdom; Department of Trauma Orthopaedic Surgery, University College London Hospitals NHS Foundation Trust, London, United Kingdom","Thompson J.W., Department of Orthopaedic Surgery, The Princess Grace Hospital, London, United Kingdom, Department of Trauma Orthopaedic Surgery, University College London Hospitals NHS Foundation Trust, London, United Kingdom; Plastow R., Department of Orthopaedic Surgery, The Princess Grace Hospital, London, United Kingdom, Department of Trauma Orthopaedic Surgery, University College London Hospitals NHS Foundation Trust, London, United Kingdom; Kayani B., Department of Orthopaedic Surgery, The Princess Grace Hospital, London, United Kingdom, Department of Trauma Orthopaedic Surgery, University College London Hospitals NHS Foundation Trust, London, United Kingdom; Moriarty P., Department of Orthopaedic Surgery, The Princess Grace Hospital, London, United Kingdom, Department of Trauma Orthopaedic Surgery, University College London Hospitals NHS Foundation Trust, London, United Kingdom; Asokan A., Department of Orthopaedic Surgery, The Princess Grace Hospital, London, United Kingdom, Department of Trauma Orthopaedic Surgery, University College London Hospitals NHS Foundation Trust, London, United Kingdom; Haddad F.S., Department of Orthopaedic Surgery, The Princess Grace Hospital, London, United Kingdom, Department of Trauma Orthopaedic Surgery, University College London Hospitals NHS Foundation Trust, London, United Kingdom","Background: Understanding the optimal management of distal biceps femoris avulsion injuries is critical for restoring preinjury function, restoring hamstring muscle strength, increasing range of motion, and minimizing risk of complications and recurrence. Due to the rarity of these injuries, prognosis and outcomes within the literature are limited to case reports and small case series. Purpose: To assess the effect of surgical repair for acute distal avulsion injuries of the biceps femoris tendon on (1) return to preinjury level of sporting function and (2) time to return to preinjury level of sporting function, patient satisfaction, and complications. Study Design: Case series; Level of evidence, 4. Methods: This prospective single-surgeon study included 22 elite athletes (18 men [82%], 4 women [18%]; mean age, 26 years; age range, 17-35 years; mean body mass index, 25.3 ± 4.1 kg/m2) undergoing primary suture anchor repair of avulsion injuries of the distal biceps femoris confirmed on preoperative magnetic resonance imaging. Predefined outcomes relating to time for return to sporting activity, patient satisfaction, complications, and injury recurrence were recorded at regular intervals after surgery. Minimum follow-up time was 12 months (range, 12.0-26.0 months) from the date of surgery. Results: The mean time from injury to surgical intervention was 12 days (range, 2-28 days). All study patients returned to their preinjury level of sporting activity, predominately professional soccer or rugby. Mean time from surgical intervention to return to full sporting activity was 16.7 ± 8.7 weeks. At 1- and 2-year follow-up, all study patients were still participating at their preinjury level of sporting activity. There was no incidence of primary injury recurrence, and no patients required further operation to the biceps origin. Conclusion: Surgical repair of acute avulsion injuries of the distal biceps femoris facilitated early return to preinjury level of function with low risk of recurrence, low complication rate, and high patient satisfaction in elite athletes. Suture anchor repair of these injuries should be considered a reliable treatment option in athletes with high functional demands to permit an early return to sport with restoration of hamstring strength. © The Author(s) 2021.","avulsion; biceps femoris; hamstrings; recurrence; return to sport; surgical treatment","abscess; adult; Article; avulsion injury; biceps femoris muscle; biomechanics; body mass; bone radiography; clinical article; elite athlete; female; hamstring muscle; hamstring tendon; human; hypertrophic scar; male; nuclear magnetic resonance imaging; patient satisfaction; physiotherapy; postoperative complication; prospective study; range of motion; return to sport; surgical technique","Ahearn N., Wood D.G., Distal avulsion of reconstituted hamstring tendons. Knee Surg Sports Traumatol Arthrosc. 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Sallay P.I., Ballard G., Hamersly S., Schrader M., Subjective and functional outcomes following surgical repair of complete ruptures of the proximal hamstring complex, Orthopedics, 31, 11, (2008); Sebastianelli W.J., Hanks G.A., Kalenak A., Isolated avulsion of the biceps femoris insertion: a case report, Clin Orthop Relat Res, 259, pp. 200-203, (1990); Takami H., Takahashi S., Ando M., Late sciatic nerve palsy following avulsion of the biceps femoris muscle from the ischial tuberosity, Arch Orthop Trauma Surg, 120, 5-6, pp. 352-354, (2000); Terry G.C., LaPrade R.F., The biceps femoris muscle complex at the knee: its anatomy and injury patterns associated with acute anterolateral-anteromedial rotatory instability, Am J Sports Med, 24, 1, pp. 2-8, (1996); Tubbs R.S., Caycedo F.J., Oakes W.J., Salter E.G., Descriptive anatomy of the insertion of the biceps femoris muscle, Clin Anat, 19, 6, pp. 517-521, (2006); Valente M., Mancuso F., Alecci V., Isolated rupture of biceps femoris tendon, Musculoskelet Surg, 97, 3, pp. 263-266, (2013); 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Thompson; Department of Orthopaedic Surgery, The Princess Grace Hospital, London, United Kingdom; email: joshua.thompson@doctors.org.uk; J.W. Thompson; Department of Trauma Orthopaedic Surgery, University College London Hospitals NHS Foundation Trust, London, United Kingdom; email: joshua.thompson@doctors.org.uk","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85103226058" "Field A.; Corr L.D.; Haines M.; Lui S.; Naughton R.; Page R.M.; Harper L.D.","Field, Adam (57212506999); Corr, Liam David (57214750098); Haines, Matthew (57203962379); Lui, Steve (24344656400); Naughton, Robert (56520033900); Page, Richard Michael (56888317900); Harper, Liam David (56400407900)","57212506999; 57214750098; 57203962379; 24344656400; 56520033900; 56888317900; 56400407900","Biomechanical and Physiological Responses to 120 Min. of Soccer-Specific Exercise","2020","Research Quarterly for Exercise and Sport","91","4","","692","704","12","6","10.1080/02701367.2019.1698698","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85079037148&doi=10.1080%2f02701367.2019.1698698&partnerID=40&md5=05c40e2dad138a16c66f0500363b5e2d","University of Huddersfield, United Kingdom; Edge Hill University, United Kingdom","Field A., University of Huddersfield, United Kingdom; Corr L.D., University of Huddersfield, United Kingdom; Haines M., University of Huddersfield, United Kingdom; Lui S., University of Huddersfield, United Kingdom; Naughton R., University of Huddersfield, United Kingdom; Page R.M., Edge Hill University, United Kingdom; Harper L.D., University of Huddersfield, United Kingdom","Purpose: The purpose of the study is to investigate biomechanical and physiological responses to soccer-specific exercise incorporating an extra-time period (ET) and assess the test–retest reliability of these responses. Methods: Twelve soccer players performed 120 min of soccer-specific exercise. Tri-axial (PLTotal) and uni-axial PlayerLoad™ in the vertical (PLV), anterior–posterior (PLA–P), and medial–lateral (PLM–L) planes were monitored using a portable accelerometer. Likewise, respiratory exchange ratio (RER) was recorded throughout exercise. At the end of each 15-min period, players provided differential ratings of perceived exertion for legs (RPE-L), breathlessness (RPE-B) and overall (RPE-O), and capillary samples were taken to measure blood lactate (BLa) concentrations. The soccer-specific exercise was completed twice within 7 days to assess reliability. Results: A main effect for time was identified for PLTotal (p = 0.045), PLV (p = 0.002), PLA–P (p = 0.011), RER (p = 0.001), RPE-L (p = 0.001), RPE-O (p = 0.003), and CMJ (p = 0.020). A significant increase in PLTotal (234 ± 34 au) and decrease in RER (0.87 ± 0.03) was evident during 105–120 versus 0–15 min (215 ± 25 au; p = 0.002 and 0.92 ± 0.02; p = 0.001). Coefficients of variations were <10% and Pearson’s correlation coefficient demonstrated moderate-to-very strong (0.33–0.99) reliability for all PL variables, RPE-B, BLa, and RER. Conclusions: These results suggest that mechanical efficiency is compromised and an increased rate of lipolysis is observed as a function of exercise duration, particularly during ET. These data have implications for practitioners interested in fatigue-induced changes during ET. © 2020 SHAPE America.","fatigue; Football; oxygen consumption; perceived exertion; PlayerLoad™; reliability","Biomechanical Phenomena; Humans; Lactic Acid; Leg; Lipolysis; Muscle Fatigue; Perception; Physical Endurance; Physical Exertion; Pulmonary Gas Exchange; Soccer; Time Factors; lactic acid; biomechanics; blood; endurance; exercise; human; leg; lipolysis; lung gas exchange; muscle fatigue; perception; physiology; soccer; time factor","Abbott W., Brownlee T.E., Harper L.D., Naughton R.J., Clifford T., The independent effects of match location, match result and the quality of opposition on subjective wellbeing in under 23 soccer players: A case study, Research in Sports Medicine, 26, 3, pp. 262-275, (2018); Anderson L., Orme P., Di Michele R., Close G.L., Morgans R., Drust B., Morton J.P., Quantification of training load during one-, two-and three-game week schedules in professional soccer players from the English Premier League: Implications for carbohydrate periodisation, Journal of Sports Sciences, 34, 13, pp. 1250-1259, (2016); 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Borg E., Borg G., Larsson K., Letzter M., Sundblad B.M., An index for breathlessness and leg fatigue, Scandinavian Journal of Medicine & Science in Sports, 20, 4, pp. 644-650, (2010); Borg G., Borg’s perceived exertion and pain scales, (1998); Bradley P.S., Sheldon W., Wooster B., Olsen P., Boanas P., Krustrup P., High-intensity running in English FA Premier League soccer matches, Journal of Sports Sciences, 27, 2, pp. 159-168, (2009); Buchheit M., Gray A., Morin J.B., Assessing stride variables and vertical stiffness with GPS-embedded accelerometers: Preliminary insights for the monitoring of neuromuscular fatigue on the field, Journal of Sports Science & Medicine, 14, 4, (2015); Butler R.J., Crowell H.P., Davis I.M., Lower extremity stiffness: Implications for performance and injury, Clinical Biomechanics, 18, 6, pp. 511-517, (2003); Carling C., Bradley P., McCall A., Dupont G., Match-to-match variability in high-speed running activity in a professional soccer team, Journal of Sports Sciences, 34, 24, pp. 2215-2223, (2016); 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Goedecke J.H., Gibson A.S.C., Grobler L., Collins M., Noakes T.D., Lambert E.V., Determinants of the variability in respiratory exchange ratio at rest and during exercise in trained athletes, American Journal of Physiology-Endocrinology and Metabolism, 279, 6, pp. E1325-E1334, (2000); Goodall S., Thomas K., Harper L.D., Hunter R., Parker P., Stevenson E., Howatson G., The assessment of neuromuscular fatigue during 120 min of simulated soccer exercise, European Journal of Applied Physiology, 117, 4, pp. 687-697, (2017); Gribok A., Leger J.L., Stevens M., Hoyt R., Buller M., Rumpler W., Measuring the short‐term substrate utilization response to high‐carbohydrate and high‐fat meals in the whole‐body indirect calorimeter, Physiological Reports, 4, 12, (2016); Harper L.D., Fothergill M., West D.J., Stevenson E., Russell M., Practitioners’ perceptions of the soccer extra-time period: Implications for future research, Plos One, 11, 7, (2016); Harper L.D., Hunter R., Parker P., Goodall S., Thomas K., Howatson G., Russell M., Test-retest reliability of physiological and performance responses to 120 minutes of simulated soccer match play, Journal of Strength and Conditioning Research, 30, 11, pp. 3178-3186, (2016); Harper L.D., West D.J., Stevenson E., Russell M., Technical performance reduces during the extra-time period of professional soccer match-play, PloS One, 9, 10, (2014); Hillman A.R., Turner M.C., Peart D.J., Bray J.W., Taylor L., McNaughton L.R., Siegler J.C., A comparison of hyperhydration versus ad libitum fluid intake strategies on measures of oxidative stress, thermoregulation, and performance, Research in Sports Medicine, 21, 4, pp. 305-317, (2013); Hobara H., Inoue K., Gomi K., Sakamoto M., Muraoka T., Iso S., Kanosue K., Continuous change in spring-mass characteristics during a 400 m sprint, Journal of Science and Medicine in Sport, 13, 2, pp. 256-261, (2010); Hopkins W.G., Measures of reliability in sports medicine and science, Sports Medicine, 30, 1, pp. 1-15, (2000); Hughes G., Watkins J., Lower limb coordination and stiffness during landing from volleyball block jumps, Research in Sports Medicine, 16, 2, pp. 138-154, (2008); Macpherson T.W., McLaren S.J., Gregson W., Lolli L., Drust B., Weston M., Using differential ratings of perceived exertion to assess agreement between coach and player perceptions of soccer training intensity: An exploratory investigation, Journal of Sports Sciences, pp. 1-6, (2019); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, Journal of Sports Sciences, 21, 7, pp. 519-528, (2003); Mohr M., Krustrup P., Bangsbo J., Fatigue in soccer: A brief review, Journal of Sports Sciences, 23, 6, pp. 593-599, (2005); Needham R.A., Morse C.I., Degens H., The acute effect of different warm-up protocols on anaerobic performance in elite youth soccer players, The Journal of Strength & Conditioning Research, 23, 9, pp. 2614-2620, (2009); Nicolella D.P., Torres-Ronda L., Saylor K.J., Schelling X., Validity and reliability of an accelerometer-based player tracking device, PLoS One, 13, 2, (2018); Oliver J.L., Croix M.B.D.S., Lloyd R.S., Williams C.A., Altered neuromuscular control of leg stiffness following soccer-specific exercise, European Journal of Applied Physiology, 114, 11, pp. 2241-2249, (2014); Page R.M., Marrin K., Brogden C.M., Greig M., Biomechanical and physiological response to a contemporary soccer match-play simulation, The Journal of Strength & Conditioning Research, 29, 10, pp. 2860-2866, (2015); Penas C.L., Dellal A., Owen A.L., Gomez-Ruano M.A., The influence of the extra-time period on physical performance in elite soccer, International Journal of Performance Analysis in Sport, 15, 3, pp. 830-839, (2015); Russell M., Kingsley M., Influence of exercise on skill proficiency in soccer, Sports Medicine, 41, 7, pp. 523-539, (2011); Russell M., Rees G., Benton D., Kingsley M., An exercise protocol that replicates soccer match-play, International Journal of Sports Medicine, 32, 7, pp. 511-518, (2011); Russell M., Sparkes W., Northeast J., Kilduff L.P., Responses to a 120 min reserve team soccer match: A case study focusing on the demands of extra time, Journal of Sports Sciences, 33, 20, pp. 2133-2139, (2015); Silva J.R., Rumpf M.C., Hertzog M., Castagna C., Farooq A., Girard O., Hader K., Acute and residual soccer match-related fatigue: A systematic review and meta-analysis, Sports Medicine, 48, 3, pp. 539-583, (2018); Stevenson E.J., Watson A., Theis S., Holz A., Harper L.D., Russell M., A comparison of isomaltulose versus maltodextrin ingestion during soccer-specific exercise, European Journal of Applied Physiology, 117, 11, pp. 2321-2333, (2017); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer, Sports Medicine, 35, 6, pp. 501-536, (2005); van Loon L.J., Greenhaff P.L., Constantin-Teodosiu D., Saris W.H., Wagenmakers A.J., The effects of increasing exercise intensity on muscle fuel utilisation in humans, The Journal of Physiology, 536, 1, pp. 295-304, (2001); Wasserman K., Hansen J.E., Sue D.L., Whipp B.J., Casaburi R., Principles of exercise testing and interpretation, (1987); Weston M., Siegler J., Bahnert A., McBrien J., Lovell R., The application of differential ratings of perceived exertion to Australian Football League matches, Journal of Science and Medicine in Sport, 18, 6, pp. 704-708, (2015); Wilk B.R., Nau S., Valero B., Physical therapy management of running injuries using an evidenced based functional approach, AMAA Journal, 22, 1, pp. 5-7, (2009); Winder N., Russell M., Naughton R., Harper L., The impact of 120 minutes of match-play on recovery and subsequent match performance: A case report in professional soccer players, Sports, 6, 1, (2018)","A. Field; School of Human and Health Sciences, University of Huddersfield, Huddersfield, HD1 3DH, United Kingdom; email: Adam.field@hud.ac.uk","","Routledge","02701367","","RQESD","32023187","English","Res. Q. Exerc. Sport","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85079037148" "Sonesson S.; Hägglund M.; Kvist J.; Torvaldsson K.; Lindblom H.; Fältström A.","Sonesson, Sofi (56736234300); Hägglund, Martin (6602402288); Kvist, Joanna (6701797719); Torvaldsson, Kalle (57646463100); Lindblom, Hanna (54791269900); Fältström, Anne (55949393300)","56736234300; 6602402288; 6701797719; 57646463100; 54791269900; 55949393300","Neuromuscular control and hop performance in youth and adult male and female football players","2022","Physical Therapy in Sport","55","","","189","195","6","4","10.1016/j.ptsp.2022.04.004","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85128942000&doi=10.1016%2fj.ptsp.2022.04.004&partnerID=40&md5=f365d93d7698d0a2835372c7b1cd3eb4","Unit of Physiotherapy, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden; Sport Without Injury ProgrammE (SWIPE), Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden; Stockholm Sports Trauma Research Center, Dept of Molecular Medicine & Surgery, Karolinska Institute, Sweden; Region Jönköping County, Rehabilitation Centre, Ryhov County Hospital, Jönköping, 551 85, Sweden","Sonesson S., Unit of Physiotherapy, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden, Sport Without Injury ProgrammE (SWIPE), Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden; Hägglund M., Unit of Physiotherapy, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden, Sport Without Injury ProgrammE (SWIPE), Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden; Kvist J., Unit of Physiotherapy, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden, Stockholm Sports Trauma Research Center, Dept of Molecular Medicine & Surgery, Karolinska Institute, Sweden; Torvaldsson K., Unit of Physiotherapy, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden, Sport Without Injury ProgrammE (SWIPE), Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden; Lindblom H., Unit of Physiotherapy, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden, Sport Without Injury ProgrammE (SWIPE), Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden; Fältström A., Unit of Physiotherapy, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden, Region Jönköping County, Rehabilitation Centre, Ryhov County Hospital, Jönköping, 551 85, Sweden","Objectives: To compare neuromuscular control and hop performance between youth and adult male and female football players. Design: Cross-sectional study. Participants: 119 youth players (13–16 years; 68 males) and 88 adult players (17–26 years; 44 males). Main outcome measures: Neuromuscular control assessed with drop vertical jump (DVJ) and tuck jump assessment (TJA). Hop performance assessed with single-leg hop for distance and side hop. Results: Adult females had smaller normalized knee separation distances (NKSD) during DVJ at initial contact (77.9 ± 18.5 vs. 86.1 ± 11.0, p = 0.010) and at maximum knee flexion (59.7 ± 23.4 vs.74.1 ± 18.1, p = 0.001) compared to youth females. TJA revealed more technique errors in youths compared to adults (males 10 (8–11) vs. 8 (7–10); females 11 (9–12) vs. 9 (8–11), p < 0.05). Youths demonstrated inferior hop performance (males single-leg hop 142 ± 18 vs. 163 ± 17, side hop 41 ± 12 vs. 52 ± 12, p < 0.001; females side hop 32 ± 10 vs. 38 ± 14, p < 0.05). Conclusions: Youth players demonstrated reduced neuromuscular control during TJA and inferior hop performance compared to adult players. Adult female players demonstrated greater knee valgus during DVJ compared to youth female players. © 2022 The Authors","Drop vertical jump; Soccer; Tuck jump","Adolescent; Adult; Biomechanical Phenomena; Cross-Sectional Studies; Female; Football; Humans; Knee Injuries; Male; Soccer; adolescent; adult; article; controlled study; cross-sectional study; female; football player; human; juvenile; knee function; major clinical study; male; neuromuscular function; outcome assessment; soccer; biomechanics; football; knee injury","Arundale A.J.H., Kvist J., Hagglund M., Faltstrom A., Jump performance in male and female football players, Knee Surgery, Sports Traumatology, Arthroscopy, 28, 2, pp. 606-613, (2020); Arundale A.J.H., Kvist J., Hagglund M., Faltstrom A., Tuck jump score is not related to hopping performance or patient-reported outcome measures in female soccer players, International Journal of Sports Physical Therapy, 15, 3, pp. 395-406, (2020); Barendrecht M., Lezeman H.C., Duysens J., Smits-Engelsman B.C., Neuromuscular training improves knee kinematics, in particular in valgus aligned adolescent team handball players of both sexes, The Journal of Strength & Conditioning Research, 25, 3, pp. 575-584, (2011); Buckthorpe M., Optimising the late-stage rehabilitation and return-to-sport training and testing process after ACL reconstruction, Sports Medicine, 49, 7, pp. 1043-1058, (2019); Chia L., Myer G.D., Hewett T.E., McKay M.J., Sullivan J., Ford K.R., Pappas E., When puberty strikes: Longitudinal changes in cutting kinematics in 172 high-school female athletes, Journal of Science and Medicine in Sport, 24, 12, pp. 1290-1295, (2021); Collings T.J., Bourne M.N., Barrett R.S., du Moulin W., Hickey J.T., Diamond L.E., Risk factors for lower limb injury in female team field and court sports: A systematic review, meta-analysis, and best evidence synthesis, Sports Medicine, 51, 4, pp. 759-776, (2021); Cronstrom A., Creaby M.W., Ageberg E., Do knee abduction kinematics and kinetics predict future anterior cruciate ligament injury risk? A systematic review and meta-analysis of prospective studies, BMC Musculoskeletetal Disorders, 21, 1, (2020); Dix C., Arundale A., Silvers-Granelli H., Marmon A., Zarzycki R., Snyder-Mackler L., Biomechanical changes during a 90° cut in collegiate female soccer players with participation in the 11+, International Journal of Sports Physical Therapy, 16, 3, pp. 671-680, (2021); Faltstrom A., Hagglund M., Hedevik H., Kvist J., Poor validity of functional performance tests to predict knee injury in female soccer players with or without anterior cruciate ligament reconstruction, The American Journal of Sports Medicine, 49, 6, pp. 1441-1450, (2021); Ford K.R., Myer G.D., Smith R.L., Byrnes R.N., Dopirak S.E., Hewett T.E., Use of an overhead goal alters vertical jump performance and biomechanics, The Journal of Strength & Conditioning Research, 19, 2, pp. 394-399, (2005); Fort-Vanmeerhaeghe A., Benet A., Mirada S., Montalvo A.M., Myer G.D., Sex and maturation differences in performance of functional jumping and landing deficits in youth athletes, Journal of Sport Rehabilitation, pp. 1-8, (2019); Fort-Vanmeerhaeghe A., Montalvo A.M., Lloyd R.S., Read P., Myer G.D., Intra- and inter-rater reliability of the modified tuck jump assessment, Journal of Sports Science and Medicine, 16, 1, pp. 117-124, (2017); Gustavsson A., Neeter C., Thomee P., Silbernagel K.G., Augustsson J., Thomee R., Karlsson J., A test battery for evaluating hop performance in patients with an ACL injury and patients who have undergone ACL reconstruction, Knee Surgery, Sports Traumatology, Arthroscopy, 14, 8, pp. 778-788, (2006); Hagglund M., Walden M., Risk factors for acute knee injury in female youth football, Knee Surgery, Sports Traumatology, Arthroscopy, 24, 3, pp. 737-746, (2016); Hewett T.E., Ford K.R., Hoogenboom B.J., Myer G.D., Understanding and preventing acl injuries: Current biomechanical and epidemiologic considerations - update 2010, North American Journal of Sports Physical Therapy, 5, 4, pp. 234-251, (2010); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., van den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, The American Journal of Sports Medicine, 33, 4, pp. 492-501, (2005); Hewett T.E., Myer G.D., Ford K.R., Paterno M.V., Quatman C.E., Mechanisms, prediction, and prevention of ACL injuries: Cut risk with three sharpened and validated tools, Journal of Orthopaedic Research, 34, 11, pp. 1843-1855, (2016); Hewett T.E., Myer G.D., Kiefer A.W., Ford K.R., Longitudinal increases in knee abduction moments in females during adolescent growth, Medicine & Science in Sports & Exercise, 47, 12, pp. 2579-2585, (2015); Krosshaug T., Steffen K., Kristianslund E., Nilstad A., Mok K.M., Myklebust G., Andersen T.E., Holme I., Engebretsen L., Bahr R., The vertical drop jump is a poor screening test for ACL injuries in female elite soccer and handball players: A prospective cohort study of 710 athletes, The American Journal of Sports Medicine, 44, 4, pp. 874-883, (2016); Larwa J., Stoy C., Chafetz R.S., Boniello M., Franklin C., Stiff landings, core stability, and dynamic knee valgus: A systematic review on documented anterior cruciate ligament ruptures in male and female athletes, International Journal of Environmental Research and Public Health, 18, 7, (2021); Lindblom H., Hagglund M., Sonesson S., Intra- and interrater reliability of subjective assessment of the drop vertical jump and tuck jump in youth athletes, Physical Therapy in Sport, 47, pp. 156-164, (2021); Lindblom H., Walden M., Carlfjord S., Hagglund M., Limited positive effects on jump-landing technique in girls but not in boys after 8 weeks of injury prevention exercise training in youth football, Knee Surgery, Sports Traumatology, Arthroscopy, 28, 2, pp. 528-537, (2020); Lininger M.R., Smith C.A., Chimera N.J., Hoog P., Warren M., Tuck jump assessment: An exploratory factor Analysis in a college age population, The Journal of Strength & Conditioning Research, 31, 3, pp. 653-659, (2017); Myer G.D., Brent J.L., Ford K.R., Hewett T.E., Real-time assessment and neuromuscular training feedback techniques to prevent ACL injury in female athletes, Strength and Conditioning Journal, 33, 3, pp. 21-35, (2011); Myer G.D., Ford K.R., Brent J.L., Hewett T.E., Differential neuromuscular training effects on ACL injury risk factors in""high-risk"" versus “low-risk” athletes, BMC Musculoskeletal Disorders, 8, (2007); Myer G.D., Ford K.R., Hewett T.E., Tuck jump assessment for reducing anterior cruciate ligament injury risk, Athletic Therapy Today, 13, 5, pp. 39-44, (2008); Nilstad A., Andersen T.E., Kristianslund E., Bahr R., Myklebust G., Steffen K., Krosshaug T., Physiotherapists can identify female football players with high knee valgus angles during vertical drop jumps using real-time observational screening, Journal of Orthopaedic & Sports Physical Therapy, 44, 5, pp. 358-365, (2014); Noyes F.R., Barber-Westin S.D., Fleckenstein C., Walsh C., West J., The drop-jump screening test: Difference in lower limb control by gender and effect of neuromuscular training in female athletes, The American Journal of Sports Medicine, 33, 2, pp. 197-207, (2005); Noyes F.R., Barber-Westin S.D., Smith S.T., Campbell T., A training program to improve neuromuscular indices in female high school volleyball players, The Journal of Strength & Conditioning Research, 25, 8, pp. 2151-2160, (2011); Noyes F.R., Barber-Westin S.D., Smith S.T., Campbell T., Garrison T.T., A training program to improve neuromuscular and performance indices in female high school basketball players, The Journal of Strength & Conditioning Research, 26, 3, pp. 709-719, (2012); Numata H., Nakase J., Kitaoka K., Shima Y., Oshima T., Takata Y., Shimozaki K., Tsuchiya H., Two-dimensional motion analysis of dynamic knee valgus identifies female high school athletes at risk of non-contact anterior cruciate ligament injury, Knee Surgery, Sports Traumatology, Arthroscopy, 26, 2, pp. 442-447, (2018); O'Kane J.W., Tencer A., Neradilek M., Polissar N., Sabado L., Schiff M.A., Is knee separation during a drop jump associated with lower extremity injury in adolescent female soccer players?, The American Journal of Sports Medicine, 44, 2, pp. 318-323, (2016); Otsuki R., Benoit D., Hirose N., Fukubayashi T., Effects of an injury prevention program on anterior cruciate ligament injury risk factors in adolescent females at different stages of maturation, Journal of Sports Science and Medicine, 20, 2, pp. 365-372, (2021); Petushek E., Nilstad A., Bahr R., Krosshaug T., Drop jump? Single-leg squat? Not if you aim to predict anterior cruciate ligament injury from real-time clinical assessment: A prospective cohort study involving 880 elite female athletes, Journal of Orthopaedic & Sports Physical Therapy, 51, 7, pp. 372-378, (2021); Read P.J., Oliver J.L., De Ste Croix M.B.A., Myer G.D., Lloyd R.S., Landing kinematics in elite male youth soccer players of different chronologic ages and stages of maturation, Journal of Athletic Training, 53, 4, pp. 372-378, (2018); Read P.J., Oliver J.L., De Ste Croix M.B.A., Myer G.D., Lloyd R.S., A review of field-based assessments of neuromuscular control and their utility in male youth soccer players, The Journal of Strength & Conditioning Research, 33, 1, pp. 283-299, (2019); Romero-Franco N., Ortego-Mate M.D.C., Molina-Mula J., Knee kinematics during landing: Is it really a predictor of acute noncontact knee injuries in athletes? A systematic review and meta-analysis, Orthopaedic Journal of Sports Medicine, 8, 12, (2020); Sonesson S., Lindblom H., Hagglund M., Performance on sprint, agility and jump tests have moderate to strong correlations in youth football players but performance tests are weakly correlated to neuromuscular control tests, Knee Surgery, Sports Traumatology, (2020); Stensrud S., Myklebust G., Kristianslund E., Bahr R., Krosshaug T., Correlation between two-dimensional video analysis and subjective assessment in evaluating knee control among elite female team handball players, British Journal of Sports Medicine, 45, 7, pp. 589-595, (2011); Westbrook A.E., Taylor J.B., Nguyen A.D., Paterno M.V., Ford K.R., Effects of maturation on knee biomechanics during cutting and landing in young female soccer players, PLoS One, 15, 5, (2020); Zazulak B.T., Hewett T.E., Reeves N.P., Goldberg B., Cholewicki J., Deficits in neuromuscular control of the trunk predict knee injury risk: A prospective biomechanical-epidemiologic study, The American Journal of Sports Medicine, 35, 7, pp. 1123-1130, (2007)","S. Sonesson; Unit of Physiotherapy, Department of Health, Medicine and Caring Sciences, Linköping University, Campus US, Linköping, Entrance 78, Level 15, S-581 83, Sweden; email: sofi.sonesson@liu.se","","Churchill Livingstone","1466853X","","PTSHB","35468362","English","Phys. Ther. Sport","Article","Final","All Open Access; Green Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85128942000" "Grooms D.R.; Diekfuss J.A.; Slutsky-Ganesh A.B.; DiCesare C.A.; Bonnette S.; Riley M.A.; Kiefer A.W.; Wohl T.R.; Criss C.R.; Lamplot J.; Thomas S.M.; Foss K.D.B.; Faigenbaum A.D.; Wong P.; Simon J.E.; Myer G.D.","Grooms, Dustin R. (55616564700); Diekfuss, Jed A. (56784267000); Slutsky-Ganesh, Alexis B. (57219537139); DiCesare, Christopher A. (55620685100); Bonnette, Scott (55004035700); Riley, Michael A. (7203009785); Kiefer, Adam W. (35316086800); Wohl, Timothy R. (57216837980); Criss, Cody R. (57214774972); Lamplot, Joseph (57203176430); Thomas, Staci M. (55772425700); Foss, Kim D. Barber (6507308390); Faigenbaum, Avery D. (7004336792); Wong, Phil (57824977300); Simon, Janet E. (55449179200); Myer, Gregory D. (6701852696)","55616564700; 56784267000; 57219537139; 55620685100; 55004035700; 7203009785; 35316086800; 57216837980; 57214774972; 57203176430; 55772425700; 6507308390; 7004336792; 57824977300; 55449179200; 6701852696","Preliminary Report on the Train the Brain Project, Part II: Neuroplasticity of Augmented Neuromuscular Training and Improved Injury-Risk Biomechanics","2022","Journal of Athletic Training","57","9-10","","911","920","9","6","10.4085/1062-6050-0548.21","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85142623314&doi=10.4085%2f1062-6050-0548.21&partnerID=40&md5=ee2c12d2943d2c7aea6a981c5bf6a749","Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, GA, United States; Division of Physical Therapy, School of Rehabilitation and Communication Sciences, College of Health Sciences and Professions, Ohio University, Athens, GA, United States; Division of Athletic Training, School of Applied Health Sciences and Wellness, College of Health Sciences and Professions, Ohio University, Athens, GA, United States; Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, United States; Emory Sports Medicine Center, Atlanta, GA, United States; Department of Orthopaedics, Division of Musculoskeletal Imaging, Emory University, School of Medicine, Atlanta, GA, United States; Department of Diagnostic Radiology and Imaging Sciences, Division of Musculoskeletal Imaging, Emory University, School of Medicine, Atlanta, GA, United States; Department of Kinesiology, University of North Carolina Greensboro, United States; Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, OH, United States; Department of Rehabilitation Exercise and Nutrition Sciences, University of Cincinnati, OH, United States; Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, United States; Department of Health and Exercise Science, The College of New Jersey, Ewing, United States; The Micheli Center for Sports Injury Prevention, Waltham, MA, United States","Grooms D.R., Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, GA, United States, Division of Physical Therapy, School of Rehabilitation and Communication Sciences, College of Health Sciences and Professions, Ohio University, Athens, GA, United States, Division of Athletic Training, School of Applied Health Sciences and Wellness, College of Health Sciences and Professions, Ohio University, Athens, GA, United States; Diekfuss J.A., Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, United States, Emory Sports Medicine Center, Atlanta, GA, United States, Department of Orthopaedics, Division of Musculoskeletal Imaging, Emory University, School of Medicine, Atlanta, GA, United States; Slutsky-Ganesh A.B., Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, United States, Emory Sports Medicine Center, Atlanta, GA, United States, Department of Orthopaedics, Division of Musculoskeletal Imaging, Emory University, School of Medicine, Atlanta, GA, United States, Department of Kinesiology, University of North Carolina Greensboro, United States; DiCesare C.A., Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, OH, United States; Bonnette S., Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, OH, United States; Riley M.A., Department of Rehabilitation Exercise and Nutrition Sciences, University of Cincinnati, OH, United States; Kiefer A.W., Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, United States; Wohl T.R., Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, GA, United States; Criss C.R., Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, GA, United States; Lamplot J., Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, United States, Emory Sports Medicine Center, Atlanta, GA, United States, Department of Orthopaedics, Division of Musculoskeletal Imaging, Emory University, School of Medicine, Atlanta, GA, United States; Thomas S.M., Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, OH, United States; Foss K.D.B., Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, United States, Emory Sports Medicine Center, Atlanta, GA, United States, Department of Orthopaedics, Division of Musculoskeletal Imaging, Emory University, School of Medicine, Atlanta, GA, United States; Faigenbaum A.D., Department of Health and Exercise Science, The College of New Jersey, Ewing, United States; Wong P., Department of Diagnostic Radiology and Imaging Sciences, Division of Musculoskeletal Imaging, Emory University, School of Medicine, Atlanta, GA, United States; Simon J.E., Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, GA, United States, Division of Athletic Training, School of Applied Health Sciences and Wellness, College of Health Sciences and Professions, Ohio University, Athens, GA, United States; Myer G.D., Emory Sports Performance And Research Center (SPARC), Flowery Branch, GA, United States, Emory Sports Medicine Center, Atlanta, GA, United States, Department of Orthopaedics, Division of Musculoskeletal Imaging, Emory University, School of Medicine, Atlanta, GA, United States, The Micheli Center for Sports Injury Prevention, Waltham, MA, United States","Context: Neuromuscular training (NMT) facilitates the acquisition of new movement patterns that reduce the anterior cruciate ligament injury risk. However, the neural mechanisms underlying these changes are unknown. Objective: To determine the relationship between brain activation and biomechanical changes after NMT with biofeedback. Design: Cohort study. Setting: Research laboratory. Patients or Other Participants: Twenty female high school soccer athletes, with 10 in an augmented NMT group and 10 in a control (no training) group. Main Outcome Measure(s): Ten participants completed 6 weeks of NMT augmented with real-time biofeedback to reduce knee injury-risk movements, and 10 participants pursued no training. Augmented neuromuscular training (aNMT) was implemented with visual biofeedback that responded in real time to injury-risk biomechanical variables. A drop vertical jump with 3- dimensional motion capture was used to assess injury-risk neuromuscular changes before and after the 6-week intervention. Brain-activation changes were measured using functional magnetic resonance imaging during unilateral knee and multijoint motor tasks. Results: After aNMT, sensory (precuneus), visual-spatial (lingual gyrus), and motor-planning (premotor) brain activity increased for knee-specific movement; sensorimotor cortex activity for multijoint movement decreased. The knee-abduction moment during landing also decreased (4.66 6 5.45 newton meters; P=.02; Hedges g=0.82) in the aNMT group but did not change in the control group (P > .05). The training-induced increased brain activity with isolated knee movement was associated with decreases in knee-abduction moment (r = 0.67; P = .036) and sensorimotor cortex activity for multijoint movement (r = 0.87; P = .001). No change in brain activity was observed in the control group (P > .05). Conclusions: The relationship between neural changes observed across tasks and reduced knee abduction suggests that aNMT facilitated recruitment of sensory integration centers to support reduced injury-risk mechanics and improve sensorimotor neural efficiency for multijoint control. Further research is warranted to determine if this training-related multimodal neuroplasticity enhances neuromuscular control during more complex sport-specific activities. © 2022 National Athletic Trainers' Association, Inc.","functional magnetic resonance imaging; injury prevention; landing neuromuscular control; motion capture; neuroimaging; sensorimotor control","Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Brain; Cohort Studies; Female; Humans; Knee Joint; Movement; Neuronal Plasticity; anterior cruciate ligament injury; biomechanics; brain; cohort analysis; female; human; knee; movement (physiology); nerve cell plasticity; physiology","Krosshaug T, Nakamae A, Boden BP, Et al., Mechanisms of anterior cruciate ligament injury in basketball: video analysis of 39 cases, Am J Sports Med, 35, 3, pp. 359-367, (2007); Swanik CB., Brains and sprains: the brain's role in noncontact anterior cruciate ligament injuries, J Athl Train, 50, 10, pp. 1100-1102, (2015); Swanik CB, Covassin T, Stearne DJ, Schatz P., The relationship between neurocognitive function and noncontact anterior cruciate ligament injuries, Am J Sports Med, 35, 6, pp. 943-948, (2007); Diekfuss JA, Grooms DR, Yuan W, Et al., Does brain functional connectivity contribute to musculoskeletal injury?. 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Grooms DR, Kiefer AW, Riley MA, Et al., Brain-behavior mechanisms for the transfer of neuromuscular training adaptions to simulated sport: initial findings from the Train the Brain project, J Sport Rehabil, 27, 5, pp. 1-5, (2018); Krosshaug T, Steffen K, Kristianslund E, Et al., The vertical drop jump is a poor screening test for ACL injuries in female elite soccer and handball players: a prospective cohort study of 710 athletes, Am J Sports Med, 44, 4, pp. 874-883, (2016)","D.R. Grooms; Ohio Musculoskeletal and Neurological Institute, W283 Grover Center, Ohio University, Athens, 45701, United States; email: groomsd@ohio.edu","","National Athletic Trainers' Association Inc.","10626050","","JATTE","35271709","English","J. Athl. Train.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85142623314" "Dupré T.; Potthast W.","Dupré, Thomas (57194794521); Potthast, Wolfgang (23035844800)","57194794521; 23035844800","Groin injury risk of pubertal soccer players increases during peak height velocity due to changes in movement techniques","2020","Journal of Sports Sciences","","","","2661","2669","8","6","10.1080/02640414.2020.1794769","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85088398195&doi=10.1080%2f02640414.2020.1794769&partnerID=40&md5=d31f368af9555f5c07c28eb2dbb7d224","Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, Germany","Dupré T., Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, Germany; Potthast W., Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, Germany","Adolescent athletes experience an increase in injury incidence when they undergo peak height velocity (PHV). To find the reason behind this increase, the present study investigated if PHV influences hip joint kinematics, kinetics and adductor muscle forces in two groups of adolescent soccer players performing 90°-cutting manoeuvres and inside passing. One group was estimated to be more than half a year before PHV (PRE, N = 12). The second group was estimated to be less than half a year before or after PHV (MID, N = 10). Maximum static gripping and adductor forces were measured. Motion capturing and inverse dynamics were used to calculate kinematics and kinetics. The MID group was significantly taller and heavier compared to PRE while the force measurements showed no differences. Statistics showed a higher hip abduction moment for MID during the cutting manoeuvre. Results from the anthropometrics and force measurements suggest that the moments of inertia of the participants’ extremities increase faster than the muscles can adapt. A higher abduction moment of MID likely increases the load on the adductor muscles through a change of technique. Combining both findings, it is likely that the risk of suffering a groin injury is increased in the MID group. © 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group.","biomechanical phenomena (MeSH); football; growth and development (MeSH); Sports (MeSH); sprains and strains (MeSH); wounds and injuries (MeSH)","Adolescent; Anthropometry; Biomechanical Phenomena; Body Height; Cross-Sectional Studies; Groin; Hip Joint; Humans; Kinetics; Male; Movement; Muscle, Skeletal; Puberty; Risk Factors; Soccer; adolescent; anthropometry; biomechanics; body height; cross-sectional study; hip; human; inguinal region; injury; kinetics; male; movement (physiology); physiology; puberty; risk factor; skeletal muscle; soccer","Backous D.D., Farrow J.A., Friedl K.E., Assessment of pubertal maturity in boys, using height and grip strength, Journal of Adolescent Health Care: Official Publication of the Society for Adolescent Medicine, 11, 6, pp. 497-500, (1990); Backous D.D., Friedl K.E., Smith N.J., Parr T.J., Carpine W.D., Soccer injuries and their relation to physical maturity, American Journal of Diseases of Children (1960), 142, 8, pp. 839-842, (1988); Beunen G., Malina R.M., Growth and physical performance relative to the timing of the adolescent spurt, Exercise and Sport Sciences Reviews, 161, pp. 503-540, (1988); Bult H.J., Barendrecht M., Tak I.J.R., Injury risk and injury burden are related to age group and peak height velocity among talented male youth soccer players, Orthopaedic Journal of Sports Medicine, 6, 12, pp. 1-10, (2018); Charnock B.L., Lewis C.L., Garrett W.E., Queen R.M., Adductor longus mechanics during the maximal effort soccer kick, Sports Biomechanics, 8, 3, pp. 223-234, (2009); Chaudhari A.M.W., Jamison S.T., McNally M.P., Pan X., Schmitt L.C., Hip adductor activations during run-to-cut manoeuvres in compression shorts: Implications for return to sport after groin injury, Journal of Sports Sciences, 32, 14, pp. 1333-1340, (2014); David S., Komnik I., Peters M., Funken J., Potthast W., Identification and risk estimation of movement strategies during cutting maneuvers, Journal of Science and Medicine in Sport, 20, 12, pp. 1075-1080, (2017); David S., Mundt M., Komnik I., Potthast W., Understanding cutting maneuvers - the mechanical consequence of preparatory strategies and foot strike pattern, Human Movement Science, 62, pp. 202-210, (2018); Dupre T., Dietzsch M., Komnik I., Potthast W., David S., Agreement of measured and calculated muscle activity during highly dynamic movements modelled with a spherical knee joint, Journal of Biomechanics, 84, pp. 73-80, (2019); Dupre T., Funken J., Muller R., Mortensen K.R.L., Lysdal F.G., Braun M., Krahl H., Potthast W., Does inside passing contribute to the high incidence of groin injuries in soccer? a biomechanical analysis, Journal of Sports Sciences, 36, 16, pp. 1827-1835, (2018); Dupre T., Lysdal F.G., Funken J., Mortensen K.R.L., Muller R., Mayer J., Krahl H., Potthast W., Groin injuries in soccer: Investigating the effect of age on adductor muscle forces, Medicine and Science in Sports and Exercise, 52, 6, pp. 1330-1337, (2020); Durlak J.A., How to select, calculate, and interpret effect sizes, Journal of Pediatric Psychology, 34, 9, pp. 917-928, (2009); Edwards S., Brooke H.C., Cook J.L., Distinct cut task strategy in australian football players with a history of groin pain, Physical Therapy in Sport: Official Journal of the Association of Chartered Physiotherapists in Sports Medicine, 23, pp. 58-66, (2017); Ekstrand J., Hagglund M., Walden M., Epidemiology of muscle injuries in professional football (soccer), The American Journal of Sports Medicine, 39, 6, pp. 1226-1232, (2011); Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: The UEFA injury study, British Journal of Sports Medicine, 45, 7, pp. 553-558, (2011); Franklyn-Miller A., Richter C., King E., Gore S., Moran K., Strike S., Falvey E.C., Athletic groin pain (part 2): A prospective cohort study on the biomechanical evaluation of change of direction identifies three clusters of movement patterns, British Journal of Sports Medicine, 51, 5, pp. 460-468, (2017); Friston K.J., Statistical parametric mapping: The analysis of functional brain images, (2007); Hagglund M., Walden M., Magnusson H., Kristenson K., Bengtsson H., Ekstrand J., Injuries affect team performance negatively in professional football: An 11-year follow-up of the UEFA champions league injury study, British Journal of Sports Medicine, 47, 12, pp. 738-742, (2013); Haroy J., Clarsen B., Thorborg K., Holmich P., Bahr R., Andersen T.E., Groin problems in male soccer players are more common than previously reported, The American Journal of Sports Medicine, 45, 6, pp. 1304-1308, (2017); Jensen R.K., Changes in segment inertia proportions between 4 and 20 years, Journal of Biomechanics, 22, 6-7, pp. 529-536, (1989); Klein Horsman M.D., Koopman H.F.J.M., van der Helm F.C.T., Poliacu Prose L., Veeger H.E.J., Morphological muscle and joint parameters for musculoskeletal modelling of the lower extremity, Clinical Biomechanics, 22, 2, pp. 239-247, (2007); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, 6, pp. 917-927, (1998); Lund M.E., Andersen M.S., de Zee M., Rasmussen J., Scaling of musculoskeletal models from static and dynamic trials, International Biomechanics, 2, 1, pp. 1-11, (2015); Mirwald R.L., Baxter-Jones A.D.G., Bailey D.A., Beunen G.P., An assessment of maturity from anthropometric measurements, Medicine and Science in Sports and Exercise, 34, 4, pp. 689-694, (2002); Nichols T.E., Holmes A.P., Nonparametric permutation tests for functional neuroimaging: A primer with examples, Human Brain Mapping, 15, 1, pp. 1-25, (2002); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of sidefoot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, 12, pp. 2028-2036, (2002); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 24, 5, pp. 529-541, (2006); Pataky T.C., Vanrenterghem J., Robinson M.A., Zero- vs. one-dimensional, parametric vs. non-parametric, and confidence interval vs. hypothesis testing procedures in one- dimensional biomechanical trajectory analysis, Journal of Biomechanics, 48, 7, pp. 1277-1285, (2015); Philippaerts R.M., Vaeyens R., Janssens M., Van Renterghem B., Matthys D., Craen R., Bourgois J., Vrijens J., Beunen G., Malina R.M., The relationship between peak height velocity and physical performance in youth soccer players, Journal of Sports Sciences, 24, 3, pp. 221-230, (2006); Raya-Gonzalez J., Suarez-Arrones L., Navandar A., Balsalobre-Fernandez C., Saez de Villar- Real E., Injury profile of elite male young soccer players in a spanish professional soccer club: A prospective study during 4 consecutive seasons, Journal of Sport Rehabilitation, (2019); Rommers N., Rossler R., Goossens L., Vaeyens R., Lenoir M., Witvrouw E., D'Hondt E., Risk of acute and overuse injuries in youth elite soccer players: Body size and growth matter, Journal of Science and Medicine in Sport, 23, 3, pp. 246-251, (2020); Ryan J., DeBurca N., Mc Creesh K., Risk factors for groin/hip injuries in field- based sports: A systematic review, British Journal of Sports Medicine, 48, 14, pp. 1089-1096, (2014); Schache A.G., Kim H.-J., Morgan D.L., Pandy M.G., Hamstring muscle forces prior to and immediately following an acute sprinting-related muscle strain injury, Gait & Posture, 32, 1, pp. 136-140, (2010); Serner A., Mosler A.B., Tol J.L., Bahr R., Weir A., Mechanisms of acute adductor longus injuries in male football players: A systematic visual video analysis, British Journal of Sports Medicine, 53, 3, pp. 158-164, (2019); Volpi P., Pozzoni R., Galli M., The major traumas in youth football, Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA, 11, 6, pp. 399-402, (2003); Walden M., Hagglund M., Ekstrand J., The epidemiology of groin injury in senior football: A systematic review of prospective studies, British Journal of Sports Medicine, 49, 12, pp. 792-797, (2015); Werner J., Hagglund M., Walden M., Ekstrand J., Uefa injury study: A prospective study of hip and groin injuries in professional football over seven consecutive seasons, British Journal of Sports Medicine, 43, 13, pp. 1036-1040, (2009); Whittaker J.L., Small C., Maffey L., Emery C.A., Risk factors for groin injury in sport: An updated systematic review, British Journal of Sports Medicine, 49, 12, pp. 803-809, (2015)","T. Dupré; Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, Am Sportpark Müngersdorf 6, 50933, Germany; email: t.dupre@dshs-koeln.de","","Routledge","02640414","","JSSCE","32691676","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-85088398195" "Jokela A.; Valle X.; Kosola J.; Rodas G.; Til L.; Burova M.; Pleshkov P.; Andersson H.; Pasta G.; Manetti P.; Lupón G.; Pruna R.; García-Romero-Pérez A.; Lempainen L.","Jokela, Aleksi (57331171000); Valle, Xavier (37862078100); Kosola, Jussi (37110858100); Rodas, Gil (6602977666); Til, Lluís (25632847200); Burova, Maria (57740250300); Pleshkov, Pavel (57540696900); Andersson, Håkan (58115678100); Pasta, Giulio (55999863000); Manetti, Paolo (58412754700); Lupón, Gabriel (58236274900); Pruna, Ricard (26432827600); García-Romero-Pérez, Alvaro (57226346870); Lempainen, Lasse (16175245500)","57331171000; 37862078100; 37110858100; 6602977666; 25632847200; 57740250300; 57540696900; 58115678100; 55999863000; 58412754700; 58236274900; 26432827600; 57226346870; 16175245500","Mechanisms of Hamstring Injury in Professional Soccer Players: Video Analysis and Magnetic Resonance Imaging Findings","2023","Clinical Journal of Sport Medicine","33","3","","217","224","7","4","10.1097/JSM.0000000000001109","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85157972688&doi=10.1097%2fJSM.0000000000001109&partnerID=40&md5=8411bd2eab42f9a28fbe361666d6e428","Faculty of Medicine, University of Turku, Turku, Finland; Department of Orthopaedics and Traumatology, Turku University Hospital, Turku, Finland; Fc Barcelona, Medical Department, Barcelona, Spain; Department de Cirurgia de la Facultat de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain; Department of Physical Activity and Health, Paavo Nurmi Centre, University of Turku, Turku, Finland; Human Performance Department Sl Benfica, Lisbon, Portugal; Fc Zenit, Saint Petersburg, Russian Federation; High Performance Center, Växjö, Sweden; Parma Calcio, Parma, Italy; Girona Fc, Medical Services, Barcelona, Spain; Watford Fc, Injury Prevention and Rehabilitation Department, Watford, United Kingdom; Physiotherapy Department, Universidad Camilo José Cela, Madrid, Spain; FinnOrthopaedics/Hospital Pihlajalinna, Turku, Finland","Jokela A., Faculty of Medicine, University of Turku, Turku, Finland, Department of Orthopaedics and Traumatology, Turku University Hospital, Turku, Finland; Valle X., Fc Barcelona, Medical Department, Barcelona, Spain, Department de Cirurgia de la Facultat de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain; Kosola J., Department of Physical Activity and Health, Paavo Nurmi Centre, University of Turku, Turku, Finland; Rodas G., Fc Barcelona, Medical Department, Barcelona, Spain; Til L., Human Performance Department Sl Benfica, Lisbon, Portugal; Burova M., Fc Zenit, Saint Petersburg, Russian Federation; Pleshkov P., Fc Zenit, Saint Petersburg, Russian Federation; Andersson H., High Performance Center, Växjö, Sweden; Pasta G., Parma Calcio, Parma, Italy; Manetti P., Parma Calcio, Parma, Italy; Lupón G., Girona Fc, Medical Services, Barcelona, Spain; Pruna R., Department of Orthopaedics and Traumatology, Turku University Hospital, Turku, Finland; García-Romero-Pérez A., Department of Physical Activity and Health, Paavo Nurmi Centre, University of Turku, Turku, Finland, Watford Fc, Injury Prevention and Rehabilitation Department, Watford, United Kingdom, Physiotherapy Department, Universidad Camilo José Cela, Madrid, Spain, FinnOrthopaedics/Hospital Pihlajalinna, Turku, Finland; Lempainen L., Department of Physical Activity and Health, Paavo Nurmi Centre, University of Turku, Turku, Finland","Objective:To describe the injury mechanisms and magnetic resonance imaging (MRI) findings in acute hamstring injuries of male soccer players using a systematic video analysis.Design:Descriptive case series study of consecutive acute hamstring injuries from September 2017 to January 2022.Setting:Two specialized sports medicine hospitals.Participants:Professional male soccer players aged between 18 and 40 years, referred for injury assessment within 7 days after an acute hamstring injury, with an available video footage of the injury and positive finding on MRI.Independent Variables:Hamstring injury mechanisms (specific scoring based on standardized models) in relation to hamstring muscle injury MRI findings.Main Outcome Measures:Hamstring injury mechanism (playing situation, player/opponent behavior, movement, and biomechanical body positions) and MRI injury location.Results:Fourteen videos of acute hamstring injuries in 13 professional male soccer players were analyzed. Three different injury mechanisms were seen: mixed-type (both sprint-related and stretch-related, 43%), stretch-type (36%), and sprint-type (21%). Most common actions during injury moments were change of direction (29%), kicking (29%), and running (21%). Most injuries occurred at high or very high horizontal speed (71%) and affected isolated proximal biceps femoris (BF) (36%). Most frequent body positions at defined injury moments were neutral trunk (43%), hip flexion 45-90 degrees (57%), and knee flexion <45 degrees (93%). Magnetic resonance imaging findings showed that 79% were isolated single-tendon injuries.Conclusions:According to a video analysis, most hamstring injuries in soccer occur during high-speed movements. Physicians should suspect proximal and isolated single-tendon - most often BF - hamstring injury, if represented injury mechanisms are seen during game play. In addition to sprinting and stretching, also mixed-type injury mechanisms occur. © 2023 Lippincott Williams and Wilkins. All rights reserved.","hamstring; injury mechanism; magnetic resonance imaging; muscle injuries; single-tendon; video analysis","Athletic Injuries; Hamstring Muscles; Humans; Infant, Newborn; Leg Injuries; Magnetic Resonance Imaging; Male; Soccer; Soft Tissue Injuries; Tendon Injuries; adult; Article; avulsion injury; biceps femoris muscle; biomechanics; body position; clinical article; clinical assessment; female; hamstring muscle; hamstring muscle injury; hip; human; knee function; male; muscle injury; nuclear magnetic resonance imaging; outcome assessment; running; soccer player; sport injury; sports medicine; standardization; statistically significant result; stretching; tendon injury; trunk; videorecording; young adult; diagnostic imaging; leg injury; newborn; nuclear magnetic resonance imaging; soccer; soft tissue injury; tendon injury","Dalton S.L., Kerr Z.Y., Dompier T.P., Epidemiology of hamstring strains in 25 NCAA sports in the 2009-2010 to 2013-2014 academic years, Am J Sports Med., 43, pp. 2671-2679, (2015); Ekstrand J., Hagglund M., Walden M., Epidemiology of muscle injuries in professional football (soccer), Am J Sports Med., 39, pp. 1226-1232, (2011); Vidoni A., Gillett M., Botchu R., Et al., Lower limb muscle injuries: the good, the bad and the ugly, Eur J Radiol., 104, pp. 101-107, (2018); Askling C., Saartok T., Thorstensson A., Type of acute hamstring strain affects flexibility, strength, and time to return to pre-injury level, Br J Sports Med., 40, pp. 40-44, (2006); Opar D.A., Drezner J., Shield A., Et al., Acute hamstring strain injury in track-and-field athletes: a 3-year observational study at the Penn Relay Carnival, Scand J Med Sci Sports, 24, pp. e254-e259, (2013); Askling C.M., Tengvar M., Thorstensson A., Acute hamstring injuries in Swedish elite football: a prospective randomised controlled clinical trial comparing two rehabilitation protocols, Br J Sports Med., 47, pp. 953-959, (2013); Gronwald T., Klein C., Hoenig T., Et al., Hamstring injury patterns in professional male football (soccer): a systematic video analysis of 52 cases, Br J Sports Med., 56, pp. 165-171, (2021); Askling C.M., Tengvar M., Saartok T., Et al., Acute first-time hamstring strains during slow-speed stretching: clinical, magnetic resonance imaging, and recovery characteristics, Am J Sports Med., 35, pp. 1716-1724, (2007); Askling C.M., Tengvar M., Tarassova O., Et al., Acute hamstring injuries in Swedish elite sprinters and jumpers: a prospective randomised controlled clinical trial comparing two rehabilitation protocols, Br J Sports Med., 48, pp. 532-539, (2014); Lempainen L., Banke I.J., Johansson K., Et al., Clinical principles in the management of hamstring injuries, Knee Surg Sports Traumatol Arthrosc., 23, pp. 2449-2456, (2014); Worth D.R., The hamstring injury in Australian rules football, Aust J Physiother., 15, pp. 111-113, (1969); Kerin F., Farrell G., Tierney P., Et al., Its not all about sprinting: mechanisms of acute hamstring strain injuries in professional male rugby union-a systematic visual video analysis, Br J Sports Med., 56, pp. 608-615, (2022); Andersen T.E., Floerenes T.W., Arnason A., Et al., Video analysis of the mechanisms for ankle injuries in football, Am J Sports Med., 32, pp. 69-79, (2004); Della Villa F., Buckthorpe M., Grassi A., Et al., Systematic video analysis of ACL injuries in professional male football (soccer): injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, Br J Sports Med., 54, pp. 1423-1432, (2020); Walden M., Krosshaug T., Bjorneboe J., Et al., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: a systematic video analysis of 39 cases, Br J Sports Med., 49, pp. 1452-1460, (2015); Klein C., Luig P., Henke T., Et al., Nine typical injury patterns in German professional male football (soccer): a systematic visual video analysis of 345 match injuries, Br J Sports Med., 55, pp. 390-396, (2020); Serner A., Mosler A.B., Tol J.L., Et al., Mechanisms of acute adductor longus injuries in male football players: a systematic visual video analysis, Br J Sports Med., 53, pp. 158-164, (2019); Kerkhoffs G., Van Es N., Wieldraaijer T., Et al., Diagnosis and prognosis of acute hamstring injuries in athletes, Knee Surg Sports Traumatol Arthrosc., 21, pp. 500-509, (2012); Bahr R., Understanding injury mechanisms: a key component of preventing injuries in sport, Br J Sports Med., 39, pp. 324-329, (2005); Isern-Kebschull J., Mecho S., Pruna R., Et al., Sports-related lower limb muscle injuries: pattern recognition approach and MRI review, Insights Imaging, 11, (2020); Flores D.V., Mejia Gomez C., Estrada-Castrillon M., Et al., MR imaging of muscle trauma: anatomy, biomechanics, pathophysiology, and imaging appearance, Radiographics: a review publication of the Radiological Society of North America, Inc, 38, pp. 124-148, (2018); Guermazi A., Roemer F.W., Robinson P., Et al., Imaging of muscle injuries in sports medicine: sports imaging series, Radiology, 282, pp. 646-663, (2017); Lee J.C., Mitchell A.W.M., Healy J.C., Imaging of muscle injury in the elite athlete, Br J Radiol., 85, pp. 1173-1185, (2012); Lempainen L., Kosola J., Pruna R., Et al., Tears of biceps femoris, semimembranosus, and semitendinosus are not equal - a new individual muscle-tendon concept in athletes, Scand J Surg., 110, pp. 483-491, (2021); Van Beijsterveldt A.M.C., Van De Port I.G.L., Vereijken A.J., Et al., Risk factors for hamstring injuries in male soccer players: a systematic review of prospective studies, Scand J Med Sci Sports, 23, pp. 253-262, (2013); Kenneally-Dabrowski C.J.B., Brown N.A.T., Lai A.K.M., Et al., Late swing or early stance? A narrative review of hamstring injury mechanisms during high-speed running, Scand J Med Sci Sports, 29, pp. 1083-1091, (2019); Askling C.M., Tengvar M., Saartok T., Et al., Proximal hamstring strains of stretching type in different sports: injury situations, clinical and magnetic resonance imaging characteristics, and return to sport, Am J Sports Med., 36, pp. 1799-1804, (2008); Sallay P.I., Friedman R.L., Coogan P.G., Et al., Hamstring muscle injuries among water skiers. Functional outcome and prevention, Am J Sports Med., 24, pp. 130-136, (1996); Chakravarthy J., Ramisetty N., Pimpalnerkar A., Et al., Surgical repair of complete proximal hamstring tendon ruptures in water skiers and bull riders: a report of four cases and review of the literature, Br J Sports Med., 39, pp. 569-572, (2005); Kurosawa H., Nakasita K., Nakasita H., Et al., Complete avulsion of the hamstring tendons from the ischial tuberosity. A report of two cases sustained in judo, Br J Sports Med., 30, pp. 72-74, (1996); Subbu R., Benjamin-Laing H., Haddad F., Timing of surgery for complete proximal hamstring avulsion injuries, Am J Sports Med., 43, pp. 385-391, (2014); Danielsson A., Horvath A., Senorski C., Et al., The mechanism of hamstring injuries - a systematic review, BMC Musculoskelet Disord., 21, (2020); Green B., Bourne M.N., Van Dyk N., Et al., Recalibrating the risk of hamstring strain injury (HSI): a 2020 systematic review and meta-analysis of risk factors for index and recurrent hamstring strain injury in sport, Br J Sports Med., 54, pp. 1081-1088, (2020)","L. Lempainen; Hospital Pihlajalinna, Turku, Joukahaisenkatu 9, 20520, Finland; email: lasse.lempainen@utu.fi","","Lippincott Williams and Wilkins","1050642X","","CJSME","36730099","English","Clin. J. Sport Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85157972688" "Gouveia J.N.; França C.; Martins F.; Henriques R.; Nascimento M.D.M.; Ihle A.; Sarmento H.; Przednowek K.; Martinho D.; Gouveia É.R.","Gouveia, João Nuno (58099616800); França, Cíntia (57221792709); Martins, Francisco (57877201300); Henriques, Ricardo (57469121700); Nascimento, Marcelo de Maio (57193956749); Ihle, Andreas (12143668800); Sarmento, Hugo (57199845464); Przednowek, Krzysztof (56416391600); Martinho, Diogo (56997309800); Gouveia, Élvio Rúbio (36637395800)","58099616800; 57221792709; 57877201300; 57469121700; 57193956749; 12143668800; 57199845464; 56416391600; 56997309800; 36637395800","Characterization of Static Strength, Vertical Jumping, and Isokinetic Strength in Soccer Players According to Age, Competitive Level, and Field Position","2023","International Journal of Environmental Research and Public Health","20","3","1799","","","","4","10.3390/ijerph20031799","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85147888985&doi=10.3390%2fijerph20031799&partnerID=40&md5=af152f2e19ca9a176d4e2f9313fb5717","Department of Physical Education and Sport, University of Madeira, Funchal, 9020-105, Portugal; Marítimo da Madeira—Futebol, SAD, Funchal, 9020-208, Portugal; LARSYS, Interactive Technologies Institute, Funchal, 9020-105, Portugal; Research Center in Sports Sciences, Health Sciences, and Human Development, CIDESD, Vila Real, 5000-801, Portugal; Department of Physical Education, Federal University of Vale do São Francisco, Petrolina, 56304-917, Brazil; Department of Psychology, University of Geneva, Geneva, 1205, Switzerland; Center for the Interdisciplinary Study of Gerontology and Vulnerability, University of Geneva, Geneva, 1205, Switzerland; Swiss National Centre of Competence in Research LIVES—Overcoming Vulnerability: Life Course Perspectives, Lausanne, 1015, Switzerland; University of Coimbra, Research Unit for Sport and Physical Education (CIDAF), Faculty of Sport Sciences and Physical Education, Coimbra, 3004-504, Portugal; Institute of Physical Culture Sciences, Medical College, University of Rzeszów, Rzeszów, 35-959, Poland","Gouveia J.N., Department of Physical Education and Sport, University of Madeira, Funchal, 9020-105, Portugal, Marítimo da Madeira—Futebol, SAD, Funchal, 9020-208, Portugal; França C., Department of Physical Education and Sport, University of Madeira, Funchal, 9020-105, Portugal, LARSYS, Interactive Technologies Institute, Funchal, 9020-105, Portugal, Research Center in Sports Sciences, Health Sciences, and Human Development, CIDESD, Vila Real, 5000-801, Portugal; Martins F., Department of Physical Education and Sport, University of Madeira, Funchal, 9020-105, Portugal, LARSYS, Interactive Technologies Institute, Funchal, 9020-105, Portugal; Henriques R., Marítimo da Madeira—Futebol, SAD, Funchal, 9020-208, Portugal; Nascimento M.D.M., Department of Physical Education, Federal University of Vale do São Francisco, Petrolina, 56304-917, Brazil; Ihle A., Department of Psychology, University of Geneva, Geneva, 1205, Switzerland, Center for the Interdisciplinary Study of Gerontology and Vulnerability, University of Geneva, Geneva, 1205, Switzerland, Swiss National Centre of Competence in Research LIVES—Overcoming Vulnerability: Life Course Perspectives, Lausanne, 1015, Switzerland; Sarmento H., University of Coimbra, Research Unit for Sport and Physical Education (CIDAF), Faculty of Sport Sciences and Physical Education, Coimbra, 3004-504, Portugal; Przednowek K., Institute of Physical Culture Sciences, Medical College, University of Rzeszów, Rzeszów, 35-959, Poland; Martinho D., University of Coimbra, Research Unit for Sport and Physical Education (CIDAF), Faculty of Sport Sciences and Physical Education, Coimbra, 3004-504, Portugal; Gouveia É.R., Department of Physical Education and Sport, University of Madeira, Funchal, 9020-105, Portugal, LARSYS, Interactive Technologies Institute, Funchal, 9020-105, Portugal, Department of Psychology, University of Geneva, Geneva, 1205, Switzerland","Muscular strength is strongly related to speed and agility tasks, which have been described as the most decisive actions preceding goals in the soccer game. This study aimed to characterize the players’ strength indicators and to analyze the variation associated with age, competition level, and positional role. Eighty-three male soccer players from A team (n = 22), B team (n = 17), U-23 (n = 19), and U-19 (n = 25) participated in this study. Handgrip strength was assessed using a hand dynamometer (Jamar Plus+), countermovement jump (CMJ) and the squat jump (SJ) were evaluated using Optojump Next, and a Biodex System 4 Pro Dynamometer was used to assess the isokinetic strength of knee extension/flexion. Team A players showed increased lower-body strength compared to their peers, mainly through their increased vertical jumping capacity (i.e., CMJ and SJ; ps < 0.019), and superior performance in isokinetic assessments (i.e., peak torque, total work, and average power). Overall, older players outperformed their younger peers regarding vertical jumping, static strength, and average power in isokinetic strength (ps < 0.005). This study emphasizes the superior strength levels of professional soccer players compared with their lower-division peers, even after controlling by age. This information is of great value to sports agents and coaches, underlining the need to design and include strength-specific content during soccer training. © 2023 by the authors.","average power; countermovement jump; football; muscle strength; peak torque; squat jump; total work","Football; Hand Strength; Humans; Knee; Lower Extremity; Male; Muscle Strength; Soccer; age structure; biomechanics; muscle; sport; adult; age; age distribution; Article; competition; competitive level; controlled study; field position; grip strength; human; human experiment; isokinetic strength; jumping; knee function; male; muscle strength; normal human; peer group; physical performance; professional athlete; soccer player; sports and sport related phenomena; static strength; strength; torque; training; vertical jumping; football; hand strength; knee; lower limb; soccer","Faude O., Koch T., Meyer T., Straight sprinting is the most frequent action in goal situations in professional football, J. Sport. 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Med, 12, pp. 143-150, (2004); Trosclair D., Bellar D., Judge L., Smith J., Mazerat N., Brignac A., Hand-grip strength as a predictor of muscular strength and endurance, J. Strength Cond. Res, 25, (2011); Cronin J., Lawton T., Harris N., Kilding A., McMaster D.T., A brief review of handgrip strength and sport performance, J. Strength Cond. Res, 31, pp. 3187-3217, (2017); Silva J.R.L.C., Detanico D., Pupo J.D., Freitas C., Bilateral asymmetry of knee and ankle isokinetic torque in soccer players u20 category, Rev. Bras. Cineantropometria Desempenho Hum, 17, pp. 195-204, (2015); Ruas C.V., Minozzo F., Pinto M.D., Brown L.E., Pinto R.S., Lower-extremity strength ratios of professional soccer players according to field position, J. Strength Cond. Res, 29, pp. 1220-1226, (2015); Tourny-Chollet C., Leroy D., Leger H., Beuret-Blanquart F., Isokinetic knee muscle strength of soccer players according to their position, Isokinet. Exerc. Sci, 8, pp. 187-193, (2000); Gerodimos V., Reliability of handgrip strength test in basketball players, J. Hum. Kinet, 31, (2012); Bosco C., Luhtanen P., Komi P.V., A simple method for measurement of mechanical power in jumping, Eur. J. Appl. Physiol. Occup. Physiol, 50, pp. 273-282, (1983); Petrigna L., Karsten B., Marcolin G., Paoli A., D'Antona G., Palma A., Bianco A., A review of countermovement and squat jump testing methods in the context of public health examination in adolescence: Reliability and feasibility of current testing procedures, Front. Physiol, 10, (2019); Wu P.P.-Y., Sterkenburg N., Everett K., Chapman D.W., White N., Mengersen K., Predicting fatigue using countermovement jump force-time signatures: PCA can distinguish neuromuscular versus metabolic fatigue, PLoS ONE, 14, (2019); Ishak A., Wong F.Y., Seurot A., Cocking S., Pullinger S.A., The influence of recovery period following a pre-load stimulus on physical performance measures in handball players, PLoS ONE, 17, (2022); Markovic S., Mirkov D.M., Nedeljkovic A., Jaric S., Body size and countermovement depth confound relationship between muscle power output and jumping performance, Hum. Mov. Sci, 33, pp. 203-210, (2014); Correia P., Mil-Homens P., Mendonca G., Avaliação, planeamento e aplicações, Treino da Força (Volume 2), (2017); Osternig L.R., Isokinetic dynamometry: Implications for muscle testing and rehabilitation, Exerc. Sport Sci. Rev, 14, pp. 45-80, (1986); Baltzopoulos V., Williams J.G., Brodie D.A., Sources of error in isokinetic dynamometry: Effects of visual feedback on maximum torque measurements, J. Orthop. Sport. Phys. Ther, 13, pp. 138-142, (1991); Croix M.D.S., ElNagar Y.O., Iga J., Ayala F., James D., The impact of joint angle and movement velocity on sex differences in the functional hamstring/quadriceps ratio, Knee, 24, pp. 745-750, (2017); Biodex System 4 (Advantage BX Software 5.3X): Instructions for Use, (2021); Keiner M., Kapsecker A., Stefer T., Kadlubowski B., Wirth K., Differences in Squat Jump, Linear Sprint, and Change-of-Direction Performance among Youth Soccer Players According to Competitive Level, Sports, 9, (2021); Gissis I., Papadopoulos C., Kalapotharakos V.I., Sotiropoulos A., Komsis G., Manolopoulos E., Strength and speed characteristics of elite, subelite, and recreational young soccer players, Res. Sport. Med, 14, pp. 205-214, (2006); Parpa K., Michaelides M., Peak isokinetic Torques of football players participating in different levels in cyprus and lower limb asymmetries, J. Sport. Sci, 5, pp. 250-255, (2017); Beato M., Young D., Stiff A., Coratella G., Lower-limb muscle strength, anterior-posterior and inter-limb asymmetry in professional, elite academy and amateur soccer players, J. Hum. Kinet, 77, pp. 135-146, (2021); Nikolaidis P., Age-related differences in countermovement vertical jump in soccer players 8-31 years old: The role of fat-free mass, Am. J. Sport. Sci. Med, 2, pp. 60-64, (2014); Aagaard P., Simonsen E.B., Andersen J.L., Magnusson P., Dyhre-Poulsen P., Increased rate of force development and neural drive of human skeletal muscle following resistance training, J. Appl. Physiol, 93, pp. 1318-1326, (2002); Stone M.H., Sands W.A., Pierce K.C., Carlock J., Cardinale M., Newton R.U., Relationship of maximum strength to weightlifting performance, Med. Sci. Sport. Exerc, 37, pp. 1037-1043, (2005); Sliwowski R., Grygorowicz M., Hojszyk R., Jadczak L., The isokinetic strength profile of elite soccer players according to playing position, PLoS ONE, 12, (2017); Sporis G., Jukic I., Ostojic S.M., Milanovic D., Fitness profiling in soccer: Physical and physiologic characteristics of elite players, J. Strength Cond Res, 23, pp. 1947-1953, (2009); Aagaard P., Simonsen E.B., Magnusson S.P., Larsson B., Dyhre-Poulsen P., A new concept for isokinetic hamstring: Quadriceps muscle strength ratio, Am. J. Sport. Med, 26, pp. 231-237, (1998); Sapega A., Muscle performance evaluation in orthopaedic practice, JBJS, 72, pp. 1562-1574, (1990)","É.R. Gouveia; Department of Physical Education and Sport, University of Madeira, Funchal, 9020-105, Portugal; email: erubiog@staff.uma.pt","","MDPI","16617827","","","36767166","English","Int. J. Environ. Res. Public Health","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85147888985" "Minafra P.; Bortolotto C.; Rampinini E.; Calliada F.; Monetti G.","Minafra, Paolo (57224974178); Bortolotto, Chandra (36898193500); Rampinini, Ermanno (14631120500); Calliada, Fabrizio (7003951576); Monetti, Giuseppe (57204983869)","57224974178; 36898193500; 14631120500; 7003951576; 57204983869","Quantitative elastosonography of the myotendinous junction normal behavior and correlation with a standard measurement system during functional tests","2017","Journal of Ultrasound in Medicine","36","1","","141","147","6","6","10.7863/ultra.15.11023","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85010604473&doi=10.7863%2fultra.15.11023&partnerID=40&md5=d2ae5ee28d7e8b78d8f624cdd6046e93","Istituto di Radiologia, Fondazione Istituto di Ricovero e Cura A Carattere Scientifico Policlinico San Matteo, Piazzale Golgi, Pavia, 27100, Italy; Mapei Sport Research Center, Olgiate Olona, Italy; Nigrisoli Hospital, Bologna, Italy","Minafra P., Istituto di Radiologia, Fondazione Istituto di Ricovero e Cura A Carattere Scientifico Policlinico San Matteo, Piazzale Golgi, Pavia, 27100, Italy; Bortolotto C., Istituto di Radiologia, Fondazione Istituto di Ricovero e Cura A Carattere Scientifico Policlinico San Matteo, Piazzale Golgi, Pavia, 27100, Italy; Rampinini E., Mapei Sport Research Center, Olgiate Olona, Italy; Calliada F., Istituto di Radiologia, Fondazione Istituto di Ricovero e Cura A Carattere Scientifico Policlinico San Matteo, Piazzale Golgi, Pavia, 27100, Italy; Monetti G., Nigrisoli Hospital, Bologna, Italy","Objectives-In recent years, an increasing need to use imaging to assess normal and adaptive muscle function, in addition to its anatomy and structure, has emerged. We evaluated the myotendinous junction's elastosonographic behavior in light of the most recent literature on its physiologic behavior. The elastosonographic studies were compared with the results obtained from a standard measurement system to ensure a correlation with maximal muscle contraction. Methods-Nineteen male professional soccer players were assessed during functional tests. The participants performed 5 repetitions at 608/s to assess muscle strength and 3 repetitions at 308/s to assess the maximum force peak of thigh muscles. The participants were monitored by a strength-power measurement system and an ultrasound machine equipped with multifrequency (18-6-MHz) linear array transducers. Results-The 19 soccer players were aged between 19 and 34 years (mean age, 28 years). For the right rectus femoris, the results of the elastosonographic studies showed a mean elasticity value 6 SD of 30.75% 6 10.05% with the muscle relaxed and a value of 13.75% 6 8.44% during contraction (mean decrease, 17.00% 6 11.71%). Elasticity values were 36.48% 6 8.39% before contraction and 8.77% 6 6.55% during contraction of the left rectus femoris muscle (mean decrease, 27.71% 6 11.95%). For 308 eccentric contraction of the left leg, correlation with the standard measurement system showed Pearson r values of 20.53 and 20.51 when comparing force peak and mean work, respectively, with elasticity values. Conclusions-Our study shows that strain elastosonographic quantification of muscle elasticity seems to match the expected physiologic and biomechanical behavior of the myotendinous junction. © 2016 by the American Institute of Ultrasound in Medicine.","Elasticity; Elasticity imaging techniques; Isokinetic test; Muscles; Musculoskeletal ultrasound; Strain elastosonography","Adult; Athletes; Elasticity Imaging Techniques; Evaluation Studies as Topic; Humans; Knee Joint; Male; Muscle Contraction; Muscle Strength; Muscle, Skeletal; Soccer; Young Adult; Abrasive cutting; Elasticity; Imaging techniques; Physiology; Sports; Biomechanical behavior; Eccentric contraction; Elasticity imaging; Linear array transducers; Muscle contractions; Myotendinous junctions; Standard measurement system; Ultrasound machines; adult; anatomy and histology; athlete; elastography; evaluation study; human; knee; male; muscle contraction; muscle strength; physiology; procedures; skeletal muscle; soccer; young adult; Muscle","Segal R.L., Using imaging to assess normal and adaptive muscle func-tion, Phys Ther, 87, pp. 704-718, (2007); Slavotinek J.P., Muscle injury: The role of imaging in prognostic assignment and monitoring of muscle repair, Semin Musculoskelet Radiol, 14, pp. 194-200, (2010); Ophir J., Cespedes I., Ponnekanti H., Yazdi Y., Li X.A., Quantitative method for imaging the elasticity of biological tissues, Ultrason Imaging, 13, pp. 111-134, (1991); Charvet B., Ruggiero F., Le Guellec D., The development of the myotendinous junction: A review, Muscles Ligaments Tendons J, 2, pp. 53-63, (2012); Liu K.H., Bhatia K., Chu W., He L.T., Leung S.F., Ahuja A.T., Shear wave elastography: A new quantitative assessment of post-irradiation neck fibrosis, Ultraschall Med, 36, pp. 348-354, (2015); Lee S.U., Joo S.Y., Kim S.K., Lee S.H., Park S.R., Jeong C., Real-time sonoe-lastography in the diagnosis of rotator cuff tendinopathy, J Shoulder Elbow Surg, 25, pp. 723-729, (2016); Drakonaki E.E., Allen G.M., Wilson D.J., Ultrasound elastography for musculoskeletal applications, Br J Radiol, 85, pp. 1435-1445, (2012); Duclay J., Martin A., Duclay A., Cometti G., Pousson M., Behavior of fascicles and the myotendinous junction of human medial gastrocne-mius following eccentric strength training, Muscle Nerve, 39, pp. 819-827, (2009); Musaka M.M., A guide to appropriate use of correlation coefficient in medical research, Malawi Med J, 24, pp. 69-71, (2012); Muraki T., Ishikawa H., Morise S., Et al., Ultrasound elastography-based assessment of the elasticity of the supraspinatus muscle and tendon during muscle contraction, J Shoulder Elbow Surg, 24, pp. 120-126, (2015); Pesavento A., Lorenz A., Siebers S., Ermert H., New real-time strain imaging concept using diagnostic ultrasound, Phys Med Biol, 45, pp. 1423-1435, (2000); Shina T., Yamakawa M., Nitta N., Ueno E., Real-time tissue elasticity imaging using combined autocorrelation method, J Med Ultrasound, 26, pp. 57-66, (1999); Fukashiro S., Itoh M., Ichinose Y., Kawakami Y., Fukunaga T., Ultraso-nography gives directly but noninvasively elastic characteristic of human tendon in vivo, Eur J Appl Physiol Occup Physiol, 71, pp. 555-557, (1995); Akagi R., Takahashi H., Effect of a 5-week static stretching program on hardness of the gastrocnemius muscle, Scand J Med Sci Sports, 24, pp. 950-957, (2014); Akagi R., Tanaka J., Shikiba T., Takahashi H., Muscle hardness of the triceps brachii before and after a resistance exercise session: A shear wave ultrasound elastography study, Acta Radiol, 56, pp. 1487-1493, (2015); Weseka M., A 1-year prospective study of soccer injuries in the 1992-1993 Kenyan national team, Afr J Health Sci, 2, pp. 392-394, (1995)","C. Bortolotto; Istituto di Radiologia, Fondazione Istituto di Ricovero e Cura A Carattere Scientifico Policlinico San Matteo, Pavia, Piazzale Golgi, 27100, Italy; email: chandra.bortolotto@gmail.com","","American Institute of Ultrasound in Medicine","02784297","","JUMED","27925702","English","J. Ultrasound Med.","Article","Final","","Scopus","2-s2.0-85010604473" "Ledune J.A.; Nesser T.W.; Finch A.; Zakrajsek R.A.","Ledune, Jason A. (55509648800); Nesser, Thomas W. (6507118705); Finch, Alfred (59063082800); Zakrajsek, Rebecca A. (52365453400)","55509648800; 6507118705; 59063082800; 52365453400","Biomechanical analysis of two standing sprint start techniques","2012","Journal of Strength and Conditioning Research","26","12","","3449","3453","4","5","10.1519/JSC.0b013e318248d8f5","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870415309&doi=10.1519%2fJSC.0b013e318248d8f5&partnerID=40&md5=b5689d4ffa3717039c7eff77548f7a19","Department of Kinesiology, Recreation and Sport, Indiana State University, Terre Haute, IN, United States; Department of Kinesiology, Recreation and Sport Studies, University of Tennessee Knoxville, Knoxville, TN, United States","Ledune J.A., Department of Kinesiology, Recreation and Sport, Indiana State University, Terre Haute, IN, United States; Nesser T.W., Department of Kinesiology, Recreation and Sport, Indiana State University, Terre Haute, IN, United States; Finch A., Department of Kinesiology, Recreation and Sport Studies, University of Tennessee Knoxville, Knoxville, TN, United States; Zakrajsek R.A., Department of Kinesiology, Recreation and Sport Studies, University of Tennessee Knoxville, Knoxville, TN, United States","Biomechanical analysis of two standing sprint start techniques. J Strength Cond Res 26(12): 3449-3453, 2012-The purpose of this study was to examine any differences between the false step standing sprint start and a traditional forward step standing sprint start. Ten DI collegiate female soccer players performed 2 standing sprint starts (Forward step and False step). Each player was videotaped for the first 3 steps of each sprint start. Velocity, acceleration, and displacement were calculated at each of the 3 steps for both standing sprint start techniques. Velocity was significantly faster with the forward step for steps 1 and 2 but not with step 3. Displacement was significantly greater with the forward step for each of the 3 steps. Acceleration was greater with the false step for each step though differences were not significant. The results indicate the forward step outperforms the false step in both velocity and displacement. Even though the false step generates greater acceleration, the backward step drastically undercuts displacement nullifying acceleration. Controversy exists between these 2 standing sprint starts with proponents arguing for their favorite with no evidence to suggest one or the other. The results from this study suggest that the forward step is superior to the false step when the concern for an individual is to get from 1 point to the next as fast as possible. © 2012 National Strength and Conditioning Association.","Acceleration; Displacement; False step; Forward step; Velocity","Acceleration; Analysis of Variance; Athletic Performance; Biomechanics; Female; Humans; Running; Soccer; Task Performance and Analysis; Videotape Recording; Young Adult; acceleration; adult; analysis of variance; article; athletic performance; biomechanics; female; human; physiology; running; soccer; task performance; videorecording","Bresnahan G.T., Tuttle W.W., Cretzmeyer F.X., Track And Field Athletics, (1964); Brown T.D., Vescovi J.D., Is stepping backward really counterproductive?, Strength Cond J, 26, pp. 42-44, (2004); Coh M., Stuhec S., Tomazin K., The biomechanical model of the sprint start and block acceleration, Phys Educ Sport, 4, pp. 103-114, (2006); Cronin J.B., Green J.P., Levin G.T., Bruchelli M.E., Frost D.M., Effect of starting stance on initial sprint performance, J Strength Cond Res, 21, pp. 990-992, (2007); Frost D.M., Cronin J.B., Levin G., Stepping backward can improve sprint performance over short distances, J Strength Cond Res, 22, pp. 918-922, (2008); Kraan G.A., Van Veen J., Snijders C.J., Storm J., Starting from standing; why step backwards?, J Biomech, 34, pp. 211-215, (2001); Johnson T.M., Brown L.E., Coburn J.W., Judelson D.A., Khamoui A.V., Tran T.T., Uribe B.P., Effect of four different starting stances on sprint time in collegiate volleyball players, J Strength Cond Res, 24, pp. 2641-2646, (2010)","T.W. Nesser; Department of Kinesiology, Recreation and Sport, Indiana State University, Terre Haute, IN, United States; email: tom.nesser@indstate.edu","","","10648011","","","22266644","English","J. Strength Cond. Res.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-84870415309" "Jensen J.; Bandholm T.; Hölmich P.; Thorborg K.","Jensen, Jesper (57220837566); Bandholm, Thomas (15047587300); Hölmich, Per (55961966200); Thorborg, Kristian (36146306900)","57220837566; 15047587300; 55961966200; 36146306900","Acute and sub-acute effects of repetitive kicking on hip adduction torque in injury-free elite youth soccer players","2014","Journal of Sports Sciences","32","14","","1357","1364","7","6","10.1080/02640414.2013.879673","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84906091752&doi=10.1080%2f02640414.2013.879673&partnerID=40&md5=fbafa39b30d14744c3d80045fce55f85","Sports Orthopedic Research Center - Copenhagen, Arthroscopic Centre Amager, Copenhagen University Hospital, Amager-Hvidovre, Copenhagen, Denmark; Physical Medicine and Rehabilitation Research - Copenhagen (PMR-C), Department of Physical Therapy, Copenhagen University Hospital, Hvidovre, Copenhagen, Denmark; Clinical Research Center, Copenhagen University Hospital, Hvidovre, Copenhagen, Denmark; Department of Orthopaedic Surgery, Copenhagen University Hospital, Hvidovre, Copenhagen, Denmark","Jensen J., Sports Orthopedic Research Center - Copenhagen, Arthroscopic Centre Amager, Copenhagen University Hospital, Amager-Hvidovre, Copenhagen, Denmark; Bandholm T., Physical Medicine and Rehabilitation Research - Copenhagen (PMR-C), Department of Physical Therapy, Copenhagen University Hospital, Hvidovre, Copenhagen, Denmark, Clinical Research Center, Copenhagen University Hospital, Hvidovre, Copenhagen, Denmark, Department of Orthopaedic Surgery, Copenhagen University Hospital, Hvidovre, Copenhagen, Denmark; Hölmich P., Sports Orthopedic Research Center - Copenhagen, Arthroscopic Centre Amager, Copenhagen University Hospital, Amager-Hvidovre, Copenhagen, Denmark; Thorborg K., Sports Orthopedic Research Center - Copenhagen, Arthroscopic Centre Amager, Copenhagen University Hospital, Amager-Hvidovre, Copenhagen, Denmark, Physical Medicine and Rehabilitation Research - Copenhagen (PMR-C), Department of Physical Therapy, Copenhagen University Hospital, Hvidovre, Copenhagen, Denmark","Hip adduction strength is important for kicking and acceleration in soccer players. Changes in hip adduction strength may therefore have an effect on soccer players' athletic performance. The purpose of this study was to investigate the acute and sub-acute effects of a kicking drill session on hip strength, concerning isometric hip adduction, abduction and flexion torque of the kicking leg and the supporting leg. Ten injury-free male elite soccer players, mean ± s age of 15.8 ± 0.4 years participated. All players underwent a specific 20 min kicking drill session, comprising 45 kicks. The players were tested the day before, 15 min after and 24 h after the kicking drill session by a blinded tester using a reliable test procedure. The isometric hip-action and leg-order were randomized. For the kicking leg, hip adduction torque increased from 2.45 (2.19-2.65) Nm {bullet operator} kg-1, median (25th-75th percentiles), at pre-kicking to 2.65 (2.55-2.81) Nm {bullet operator} kg-1 (P = 0.024) 24 h post-kicking. This may have implications for the soccer player's ability to maximally activate the hip adductors during kicking and acceleration, and thereby improve performance the day after a kicking drill session. © 2014 © 2014 Taylor & Francis.","adductor; football; groin; hip; kick","Adolescent; Athletes; Athletic Performance; Biomechanical Phenomena; Exercise; Hip; Hip Joint; Humans; Leg; Male; Movement; Muscle Strength; Muscle, Skeletal; Soccer; Torque; adolescent; athlete; athletic performance; biomechanics; exercise; hip; human; leg; male; movement (physiology); muscle strength; physiology; skeletal muscle; soccer; torque","Aagaard P., Simonsen E.B., Trolle M., Bangsbo J., Klausen K., Specificity of training velocity and training load on gains in isokinetic knee joint strength, Acta Physiologica Scandinavica, 156, pp. 123-129, (1996); Baczkowski K., Marks P., Silberstein M., Schneider-Kolsky M.E., A new look into kicking a football: An investigation of muscle activity using MRI, Australasian Radiology, 50, pp. 324-329, (2006); Bohannon R.W., Make tests and break tests of elbow flexor muscle strength, Physical Therapy, 68, pp. 193-194, (1988); Bohannon R.W., Hand-held compared with isokinetic dynamometry for measurement of static knee extension torque (parallel reliability of dynamometers), Clinical Physics and Physiological Measurement, 11, pp. 217-222, (1990); Bohannon R.W., Andrews A.W., Accuracy of spring and strain gauge hand-held dynamometers, Journal of Orthopaedic and Sports Physical Therapy, 10, pp. 323-325, (1989); Brophy R.H., Backus S.I., Pansy B.S., Lyman S., Williams R.J., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, Journal of Orthopaedic & Sports Physical Therapy, 37, pp. 260-268, (2007); Charnock B.L., Lewis C.L., Garrett W.E., Queen R.M., Adductor longus mechanics during the maximal effort soccer kick, Sports Biomechanics, 8, pp. 223-234, (2009); Couppe C., Kongsgaard M., Aagaard P., Hansen P., Bojsen-Moller J., Kjaer M., Magnusson S.P., Habitual loading results in tendon hypertrophy and increased stiffness of the human patellar tendon, Journal of Applied Physiology, 105, pp. 805-810, (2008); De Witt J.K., Hinrichs R.N., Mechanical factors associated with the development of high ball velocity during an instep soccer kick, Sports Biomechanics, 11, pp. 382-390, (2012); Delecluse C., Influence of strength training on sprint running performance. Current findings and implications for training, Sports Medicine, 24, pp. 147-156, (1997); Dimitrakopoulou A., Schilders E.M., Talbot J.C., Bismil Q., Acute avulsion of the fibrocartilage origin of the adductor longus in professional soccer players: A report of two cases, Clinical Journal of Sport Medicine, 18, pp. 167-169, (2008); Dutta P., Subramanium S., Effect of six weeks of isokinetic strength training combined with skill training on soccer kicking performance, Science and soccer IV, pp. 334-340, (2002); Enoka R.M., Neuromechanics of human movement, (2002); Evaggelos M., Athanasios K., Konstantinos M., Vasileios K., Eleftherios K., Effects of a 10-week resistance exercise program on soccer kick biomechanics and muscle strength, Journal of Strength and Conditioning Research, (2013); FIFA Big Count 2006: 270 million people active in football, (2007); Ford P.R., Yates I., Williams A.M., An analysis of practice activities and instructional behaviours used by youth soccer coaches during practice: Exploring the link between science and application, Journal of Sports Sciences, 28, pp. 483-495, (2010); Friden J., Sfakianos P.N., Hargens A.R., Muscle soreness and intramuscular fluid pressure: Comparison between eccentric and concentric load, Journal of Applied Physiology, 61, pp. 2175-2179, (1986); Friden J., Sjostrom M., Ekblom B., Myofibrillar damage following intense eccentric exercise in man, International Journal of Sports Medicine, 4, pp. 170-176, (1983); Hides J.A., Fan T., Stanton W.R., Stanton P., McMahon K., Wilson S., Psoas and quadratus lumborum muscle asymmetry among elite Australian football league players, British Journal of Sports Medicine, 44, pp. 563-567, (2008); Holmich P., Long-standing groin pain in sportspeople falls into three primary patterns, a ""clinical entity"" approach: A prospective study of 207 patients, British Journal of Sports Medicine, 41, pp. 247-252, (2007); Jelusic V., Jaric S., Kukolj M., Effects of the stretch-shortening strength training on kicking performance in soccer players, Journal of Human Movement Studies, 22, pp. 231-238, (1992); Kawamoto R., Miyagi O., Ohashi J., Fukashiro S., Kinetic comparison of a side-foot soccer kick between experienced and inexperienced players, Sports Biomechanics, 6, pp. 187-198, (2007); Lee T.D., Swanson L.R., Hall A.L., What is repeated in a repetition? Effects of practice conditions on motor skill acquisition, Physical Therapy, 71, pp. 150-156, (1991); Magalhaes J., Oliveira J., Ascensao A., Soares J., Concentric quadriceps and hamstrings isokinetic strength in volleyball and soccer players, Journal of Sports Medicine and Physical Fitness, 44, pp. 119-125, (2004); Manolopoulos E., Papadopoulos C., Kellis E., Effects of combined strength and kick coordination training on soccer kick biomechanics in amateur players, Scandinavian Journal of Medicine & Science in Sports, 16, pp. 102-110, (2006); Masuda K., Kikuhara N., Demura S., Katsuta S., Yamanaka K., Relationship between muscle strength in various isokinetic movements and kick performance among soccer players, Journal of Sports Medicine and Physical Fitness, 45, pp. 44-52, (2005); Neptune R.R., Wright I.C., van den Bogert A.J., Muscle coordination and function during cutting movements, Medicine & Science in Sports & Exercise, 31, pp. 294-302, (1999); Nikolaou P.K., Macdonald B.L., Glisson R.R., Seaber A.V., Garrett Jr. W.E., Biomechanical and histological evaluation of muscle after controlled strain injury, American Journal of Sports Medicine, 15, pp. 9-14, (1987); Oatis C.A., Kinesiology: The mechanics and pathomechanics of human movement, (2004); Rahnama N., Lees A., Bambaecichi E., Comparison of muscle strength and flexibility between the preferred and non-preferred leg in English soccer players, Ergonomics, 48, pp. 1568-1575, (2005); Sedano C.S., Vaeyens R., Philippaerts R.M., Redondo J.C., de Benito A.M., Cuadrado G., Effects of lower-limb plyometric training on body composition, explosive strength, and kicking speed in female soccer players, Journal of Strength & Conditioning Research, 23, pp. 1714-1722, (2009); Stratford P.W., Balsor B.E., A comparison of make and break tests using a hand-held dynamometer and the Kin-Com, Journal of Orthopaedic and Sports Physical Therapy, 19, pp. 28-32, (1994); Thorborg K., Couppe C., Petersen J., Magnusson P., Holmich P., Eccentric hip adduction and abduction strength in elite soccer players and matched controls: A cross-sectional study, British Journal of Sports Medicine, 45, pp. 10-13, (2011); Thorborg K., Petersen J., Magnusson S.P., Holmich P., Clinical assessment of hip strength using a hand-held dynamometer is reliable, Scandinavian Journal of Medicine & Science in Sports, 20, pp. 493-501, (2010); Thorborg K., Serner A., Petersen J., Moller Madsen T., Magnussonn P., Holmich P., Hip adduction and adduction strength profiles in elite soccer players: Implications for clinical evaluation of hip adductor muscle recovery after injury, American Journal of Sports Medicine, 39, pp. 121-126, (2011); Thorlund J.B., Aagaard P., Madsen K., Rapid muscle force capacity changes after soccer match play, International Journal of Sports Medicine, 30, pp. 273-278, (2009); Young W.B., Rath D.A., Enhancing foot velocity in football kicking: The role of strength training, Journal of Strength & Conditioning Research, 25, pp. 561-566, (2011); Zakas A., Bilateral isokinetic peak torque of quadriceps and hamstring muscles in professional soccer players with dominance on one or both two sides, Journal of Sports Medicine and Physical Fitness, 46, pp. 28-35, (2006)","J. Jensen; Arthroscopic Centre Amager, Copenhagen University Hospital, Amager-Hvidovre, Copenhagen, Denmark; email: hbk274@alumni.ku.dk","","Routledge","02640414","","JSSCE","24669834","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-84906091752" "Wilmes E.; Bastiaansen B.J.C.; de Ruiter C.J.; Vegter R.J.K.; Brink M.S.; Weersma H.; Goedhart E.A.; Lemmink K.A.P.M.; Savelsbergh G.J.P.","Wilmes, Erik (57216648924); Bastiaansen, Bram J C (57216645857); de Ruiter, Cornelis J. (7006550668); Vegter, Riemer J K (55345744400); Brink, Michel S. (24469949200); Weersma, Hidde (58037186500); Goedhart, Edwin A. (55311915500); Lemmink, Koen A P M (6603663944); Savelsbergh, Geert J P (56250040000)","57216648924; 57216645857; 7006550668; 55345744400; 24469949200; 58037186500; 55311915500; 6603663944; 56250040000","Construct Validity and Test-Retest Reliability of Hip Load Compared With Playerload During Football-Specific Running, Kicking, and Jumping Tasks","2023","International journal of sports physiology and performance","18","1","","3","10","7","5","10.1123/ijspp.2022-0194","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85145242397&doi=10.1123%2fijspp.2022-0194&partnerID=40&md5=c5a1a26046f4277975dab78e6ab1461e","Amsterdam Movement Sciences, Department of Human Movement Sciences, Faculty of Behavioral and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands; Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, Groningen, Netherlands; FIFA Medical Centre of Excellence, Royal Netherlands Football Association, Zeist, Netherlands","Wilmes E., Amsterdam Movement Sciences, Department of Human Movement Sciences, Faculty of Behavioral and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands; Bastiaansen B.J.C., Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, Groningen, Netherlands; de Ruiter C.J., Amsterdam Movement Sciences, Department of Human Movement Sciences, Faculty of Behavioral and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands; Vegter R.J.K., Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, Groningen, Netherlands; Brink M.S., Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, Groningen, Netherlands; Weersma H., Amsterdam Movement Sciences, Department of Human Movement Sciences, Faculty of Behavioral and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands; Goedhart E.A., FIFA Medical Centre of Excellence, Royal Netherlands Football Association, Zeist, Netherlands; Lemmink K.A.P.M., Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, Groningen, Netherlands; Savelsbergh G.J.P., Amsterdam Movement Sciences, Department of Human Movement Sciences, Faculty of Behavioral and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands","PURPOSE: To determine the test-retest reliability of the recently developed Hip Load metric, evaluate its construct validity, and assess the differences with Playerload during football-specific short-distance shuttle runs. METHODS: Eleven amateur football players participated in 2 identical experimental sessions. Each session included 3 different shuttle runs that were performed at 2 pace-controlled running intensities. The runs consisted of only running, running combined with kicks, and running combined with jumps. Cumulative Playerload and Hip Loads of the preferred and nonpreferred kicking leg were collected for each shuttle run. Test-retest reliability was determined using intraclass correlations, coefficients of variation, and Bland-Altman analyses. To compare the load metrics with each other, they were normalized to their respective values obtained during a 54-m run at 9 km/h. Sensitivity of each load metric to running intensity, kicks, and jumps was assessed using separate linear mixed models. RESULTS: Intraclass correlations were high for the Hip Loads of the preferred kicking leg (.91) and the nonpreferred kicking leg (.96) and moderate for the Playerload (.87). The effects (95% CIs) of intensity and kicks on the normalized Hip Load of the kicking leg (intensity: 0.95 to 1.50, kicks: 0.36 to 1.59) and nonkicking leg (intensity: 0.96 to 1.53, kicks: 0.06 to 1.34) were larger than on the normalized Playerload (intensity: 0.12 to 0.25, kicks: 0.22 to 0.53). CONCLUSIONS: The inclusion of Hip Load in training load quantification may help sport practitioners to better balance load and recovery.","biomechanical load; inertial measurement units; shuttle runs; soccer; training load","Football; Humans; Reproducibility of Results; Running; Soccer; football; human; reproducibility; running; soccer","","","","NLM (Medline)","15550273","","","36455553","English","Int J Sports Physiol Perform","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-85145242397" "Kawaguchi K.; Taketomi S.; Mizutani Y.; Uchiyama E.; Ikegami Y.; Tanaka S.; Haga N.; Nakamura Y.","Kawaguchi, Kohei (57201548419); Taketomi, Shuji (37000367800); Mizutani, Yuri (57219010051); Uchiyama, Emiko (57193081164); Ikegami, Yosuke (55325254800); Tanaka, Sakae (55555616600); Haga, Nobuhiko (7006948591); Nakamura, Yoshihiko (7406394118)","57201548419; 37000367800; 57219010051; 57193081164; 55325254800; 55555616600; 7006948591; 7406394118","Sex-Based Differences in the Drop Vertical Jump as Revealed by Video Motion Capture Analysis Using Artificial Intelligence","2021","Orthopaedic Journal of Sports Medicine","9","11","","","","","6","10.1177/23259671211048188","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118587770&doi=10.1177%2f23259671211048188&partnerID=40&md5=ed5a299407c211206924a9baaec15d8b","University of Tokyo Sports Science Initiative (UTSSI), Tokyo, Japan; Department of Orthopaedic Surgery Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan; Department of Rehabilitation Medicine, The University of Tokyo, Tokyo, Japan","Kawaguchi K., University of Tokyo Sports Science Initiative (UTSSI), Tokyo, Japan, Department of Orthopaedic Surgery Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Taketomi S., University of Tokyo Sports Science Initiative (UTSSI), Tokyo, Japan, Department of Orthopaedic Surgery Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Mizutani Y., University of Tokyo Sports Science Initiative (UTSSI), Tokyo, Japan; Uchiyama E., Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan; Ikegami Y., Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan; Tanaka S., Department of Orthopaedic Surgery Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Haga N., University of Tokyo Sports Science Initiative (UTSSI), Tokyo, Japan, Department of Rehabilitation Medicine, The University of Tokyo, Tokyo, Japan; Nakamura Y., University of Tokyo Sports Science Initiative (UTSSI), Tokyo, Japan, Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan","Background: Sex-based biomechanical differences during a drop vertical jump (DVJ) may explain the increased risk of anterior cruciate ligament injury in females. Video motion capture using artificial intelligence (VMocap) is a new method for accurate motion analysis. Purpose: To use VMocap to identify sex-based differences in biomechanics during a DVJ in Asian athletes. Study Design: Controlled laboratory study. Methods: A total of 63 female and 61 male Asian soccer players volunteered for this study in 2018. Participants performed a bilateral DVJ using VMocap, and the knee valgus angle (KVA), knee flexion angle (KFA), hip flexion angle (HFA), and lower leg anterior inclination angle (LAIA) were calculated from the motion capture data. These joint angles and inclination angles were evaluated at the time of highest point of the first jump (H1), initial contact (IC), maximum knee flexion (MKF), toe-off (TO), and highest point of the second jump (H2). The unpaired t test was used to compare sex-based differences. Results: At H1, the KVA in females showed more valgus (−2.9° vs −5.4°) and the LAIA in females was greater (29.1° vs 25.7°) versus males (P <.01 for both). At IC, the KVA in females showed more valgus (−1.3° vs −3.0°) and females had a greater KFA (20.8° vs 14.3°) and LAIA (5.1° vs 0.0°) compared with males (P <.01 for all). At MKF, female KVA showed more valgus (6.2° vs −9.5°), and females had greater LAIA (36.6° vs 34.6°), smaller KFA (77.5° vs 87.5°), and smaller HFA (55.8° vs 82.0°) compared with males (P <.01 for all). At TO, female KVA showed more valgus (−0.7° vs −3.1°) and female KFA, HFA, and LAIA were greater (31.7° vs 19.2°; 19.9° vs 16.4°; and 18.2° vs 11.5°, respectively) than males (P <.01 for all). At H2, females had a greater KFA (18.6° vs 14.6°) and LAIA (13.3° vs 9.9°) than males (P <.04 for both). Conclusion: Asian female soccer players showed increased KVA and LAIA, decreased KFA and HFA at MKF, and increased KFA at IC and TO compared with their male counterparts in this analysis of the DVJ. Clinical Relevance: Elucidation of kinematic differences between the sexes can aid in predicting injuries. © The Author(s) 2021.","artificial intelligence; motion analysis; sex difference; vertical drop jump","adolescent; adult; anterior cruciate ligament reconstruction; Article; artificial intelligence; athlete; biomechanics; comparative study; controlled study; female; hip flexion angle; human; jumping; kinematics; knee function; knee injury; knee valgus angle; leg anterior inclination angle; lower leg; major clinical study; male; motion; questionnaire; risk factor; sex difference; soccer; soccer player; sport injury; videorecording; visual field","Bates N.A., Myer G.D., Hale R.F., Schilaty N.D., Hewett T.E., Prospective frontal plane angles used to predict ACL strain and identify those at high risk for sports-related ACL injury, Orthop J Sports Med, 8, 10, (2020); Brophy R.H., Schmitz L., Wright R.W., Et al., Return to play and future ACL injury risk after ACL reconstruction in soccer athletes from the multicenter orthopaedic outcomes network (MOON) group, Am J Sports Med, 40, 11, pp. 2517-2522, (2012); Cao Z., Simon T., Wei S.-E., Sheikh Y., Realtime multi-person 2D pose estimation using part affinity fields, Comput Vis Pattern Recognit, pp. 7291-7299, (2017); Decker M.J., Torry M.R., Wyland D.J., Sterett W.I., Richard Steadman J., Gender differences in lower extremity kinematics, kinetics and energy absorption during landing, Clin Biomech (Bristol, Avon), 18, 7, pp. 662-669, (2003); Dufec J., Bates B., Biomechanical factors associated with injury during landing in jump sports, Sports Med, 12, 5, pp. 326-337, (1991); Fagenbaum R., Darling W.G., Jump landing strategies in male and female college athletes and the implications of such strategies for anterior cruciate ligament injury, Am J Sports Med, 31, 2, pp. 233-240, (2003); Ford K.R., DiCresare C.A., Myer G.D., Hewett T.E., Real-time biofeedback to target risk of anterior cruciate ligament injury: a technical report for injury prevention and rehabilitation, J Sport Rehabil, 24, 2, pp. 2013-2019, (2015); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Med Sci Sports Exerc, 35, 10, pp. 1745-1750, (2003); Hewett T., Ford K., Myer G., Wanstrath K., Scheper M., Gender differences in hip adduction motion and torque during a single-leg agility maneuver, J Orthop Res, 24, 3, pp. 416-421, (2006); Hewett T.E., Ford K.R., Xu Y.Y., Khoury J., Myer G.D., Effectiveness of neuromuscular training based on the neuromuscular risk profile, Am J Sports Med, 45, 9, pp. 2142-2147, (2017); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J Bone Joint Surg Am, 86, 8, pp. 1601-1608, (2004); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Hewett T.E., Myer G.D., Kiefer A.W., Ford K.R., Longitudinal increases in knee abduction moments in females during adolescent growth, Med Sci Sports Exerc, 47, 12, pp. 2579-2585, (2015); Holden S., Doherty C., Boreham C., Delahunt E., Sex differences in sagittal plane control emerge during adolescent growth: a prospective investigation, Knee Surg Sports Traumatol Arthrosc, 27, 2, pp. 419-426, (2019); Huston L.J., Vibert B., Ashton-Miller J.A., Wojtys E.M., Gender differences in knee angle when landing from a drop-jump, Am J Knee Surg, 14, 4, pp. 215-219, (2001); Kernozek T., Torry M., Van Hoof H., Cowley H., Tanner S., Gender differences in frontal and sagittal plane biomechanics during drop landings, Med Sci Sports Exerc, 37, 6, pp. 1003-1012, (2005); Koga H., Nakamae A., Shima Y., Bahr R., Krosshaug T., Hip and ankle kinematics in noncontact anterior cruciate ligament injury situations: video analysis using model-based image matching, Am J Sports Med, 46, 2, pp. 333-340, (2018); Krosshaug T., Steffen K., Kristianslund E., Et al., The vertical drop jump is a poor screening test for ACL injuries in female elite soccer and handball players: a prospective cohort study of 710 athletes, Am J Sports Med, 44, 4, pp. 874-883, (2016); Ohashi T., Ikegami Y., Yamamoto K., Takano W., Nakamura Y., Video motion capture from the part confidence maps of multi-camera images by spatiotemporal filtering using the human skeletal model; Orishimo K.F., Kremenic I.J., Pappas E., Hagins M., Liederbach M., Comparison of landing biomechanics between male and female professional dancers, Am J Sports Med, 37, 11, pp. 2187-2193, (2009); Orishimo K.F., Liederbach M., Kremenic I.J., Hagins M., Pappas E., Comparison of landing biomechanics between male and female dancers and athletes, part 1: influence of sex on risk of anterior cruciate ligament injury, Am J Sports Med, 42, 5, pp. 1082-1088, (2014); Padua D.A., DiStefano L.J., Beutler A.I., de la Motte S.J., DiStefano M.J., Marshall S.W., The landing error scoring system as a screening tool for an anterior cruciate ligament injury-prevention program in elite-youth soccer athletes, J Athl Train, 50, 6, pp. 589-595, (2015); Pappas E., Hagins M., Sheikhzadeh A., Nordin M., Rose D., Biomechanical differences between unilateral and bilateral landings from a jump: gender differences, Clin J Sport Med, 17, 4, pp. 263-268, (2007); Paterno M.V., Rauh M.J., Schmitt L.C., Ford K.R., Hewett T.E., Incidence of contralateral and ipsilateral anterior cruciate ligament (ACL) injury after primary ACL reconstruction and return to sport, Clin J Sport Med, 22, 2, pp. 116-121, (2012); Prodromos C.C., Han Y., Rogowski J., Joyce B., Shi K., A meta-analysis of the Incidence of anterior cruciate ligament tears as a function of gender, sport, and a knee injury-reduction regimen, Arthroscopy, 23, 12, pp. 1320-1325, (2007); Russell K.A., Palmieri R.M., Zinder S.M., Ingersoll C.D., Sex differences in valgus knee angle during a single-leg drop jump, J Athl Train, 41, 2, pp. 166-171, (2006); Smith H.C., Johnson R.J., Shultz S.J., Et al., A prospective evaluation of the Landing Error Scoring System (LESS) as a screening tool for anterior cruciate ligament injury risk, Am J Sports Med, 40, 3, pp. 521-526, (2012); Stanley L.E., Kerr Z.Y., Dompier T.P., Padua D.A., Sex differences in the incidence of anterior cruciate ligament, medial collateral ligament, and meniscal injuries in collegiate and high school sports: 2009-2010 through 2013-2014, Am J Sports Med, 44, 6, pp. 1565-1572, (2016); Swanik C.B., Covassin T., Stearne D.J., Schatz P., The relationship between neurocognitive function and noncontact anterior cruciate ligament injuries, Am J Sports Med, 35, 6, pp. 943-948, (2007); Trigsted S.M., Post E.G., Bell D.R., Landing mechanics during single hop for distance in females following anterior cruciate ligament reconstruction compared to healthy controls, Knee Surg Sports Traumatol Arthrosc, 25, 5, pp. 1395-1402, (2017); Wei S., Ramakrishna V., Kanade T., Sheikh Y., Convolutional pose machines, Comput Vis Pattern Recognit, pp. 4724-4731, (2016); Zebis M.K., Andersen L.L., Bencke J., Kjaer M., Aagaard P., Identification of athletes at future risk of anterior cruciate ligament ruptures by neuromuscular screening, Am J Sports Med, 37, 10, pp. 1967-1973, (2009)","S. Taketomi; University of Tokyo Sports Science Initiative (UTSSI), Tokyo, Japan; email: takeos-tky@umin.ac.jp","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85118587770" "Di Paolo S.; Zaffagnini S.; Tosarelli F.; Grassi A.; Della Villa F.","Di Paolo, Stefano (57209464265); Zaffagnini, Stefano (7003438311); Tosarelli, Filippo (57217386930); Grassi, Alberto (57205264407); Della Villa, Francesco (55780654000)","57209464265; 7003438311; 57217386930; 57205264407; 55780654000","Beyond Distance: A Simple Qualitative Assessment of the Single-Leg Hop Test in Return-to-Play Testing","2022","Sports Health","14","6","","906","911","5","4","10.1177/19417381211063450","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85124085153&doi=10.1177%2f19417381211063450&partnerID=40&md5=e4dbc3be7cfa7c791aaa674f99b18ab1","Department for Life Quality Studies, University of Bologna, Bologna, Italy; 2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy; Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy; Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy","Di Paolo S., Department for Life Quality Studies, University of Bologna, Bologna, Italy; Zaffagnini S., 2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy; Tosarelli F., Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy; Grassi A., 2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy; Della Villa F., Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy","Background: Limb symmetry index in the single-leg hop (SLH) test has been questioned for its low predictive value in identifying secondary anterior cruciate ligament (ACL) injury. The purpose of this study was to describe a qualitative 2-dimensional (2D) scoring system for the assessment of the SLH test and associate it with the vertical ground-reaction forces (vGRF) and sagittal plane biomechanics evaluated through gold standard 3D motion analysis. Hypothesis: Stiff landings would be associated with low 2D scores. Study Design: Descriptive laboratory study. Level of Evidence: Level 4. Methods: Thirty-four competitive football (soccer) players (age 22.8 ± 4.1 years, 16 women) were enrolled. Each athlete performed a series of SLH tests. Three-dimensional motion analysis was recorded using 10 stereophotogrammetric cameras, a force platform, and 3 high-speed cameras. The 2D qualitative assessment was performed through a scoring system based on the video-analysis of sagittal plane joint kinematics. A score of 0/2 (inadequate), 1/2 (partially adequate), or 2/2 (adequate) was attributed to the movement, based on objective measurements. The vGRF was extracted from the force platform and grouped according to the results of the 2D evaluation. Results: Significantly higher vGRF (stiffer landing) was found for athletes obtaining a 0/2 score compared with those obtaining a 2/2 score (up to 0.8 body weight higher, P < 0.01). A significant negative rank correlation was found between the vGRF and the total score (ρ = −0.17, P = 0.03). Conclusion: The qualitative scoring system effectively identified stiff landings in the SLH for distance test. Clinical Relevance: The qualitative scoring system could be a user-friendly standardized method to assess athletes’ movement quality in return to sport clearance decision after ACL injury. © 2022 The Author(s).","2D video analysis; anterior cruciate ligament (ACL); injury prevention; return to sport; single-leg hop test","Adolescent; Adult; Anterior Cruciate Ligament Injuries; Anterior Cruciate Ligament Reconstruction; Biomechanical Phenomena; Female; Humans; Knee Joint; Leg; Return to Sport; Young Adult; adolescent; adult; anterior cruciate ligament injury; anterior cruciate ligament reconstruction; biomechanics; female; human; knee; leg; return to sport; young adult","Abrams G.D., Harris J.D., Gupta A.K., Et al., Functional performance testing after anterior cruciate ligament reconstruction: a systematic review, Orthop J Sports Med, 2, (2014); Buckthorpe M., Optimising the late-stage rehabilitation and return-to-sport training and testing process after ACL reconstruction, Sports Med, 49, pp. 1043-1058, (2019); Buckthorpe M., Della Villa F., Della Villa S., Roi G.S., On-field rehabilitation part 1: 4 pillars of high-quality on-field rehabilitation are restoring movement quality, physical conditioning, restoring sport-specific skills, and progressively developing chronic training load, J Orthop Sports Phys Ther, 49, pp. 565-569, (2019); Buckthorpe M., Tamisari A., Villa F.D., A ten task-based progression in rehabilitation after ACL reconstruction: from post-surgery to return to play—a clinical commentary, Int J Sports Phys Ther, 15, pp. 611-623, (2020); Della Villa F., Buckthorpe M., Grassi A., Et al., Systematic video analysis of ACL injuries in professional male football (soccer): injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, Br J Sports Med, (2020); Dingenen B., Malfait B., Vanrenterghem J., Robinson M.A., Verschueren S.M.P., Staes F.F., Can two-dimensional measured peak sagittal plane excursions during drop vertical jumps help identify three-dimensional measured joint moments?, Knee, 22, pp. 73-79, (2015); Gokeler A., Welling W., Benjaminse A., Lemmink K., Seil R., Zaffagnini S., A critical analysis of limb symmetry indices of hop tests in athletes after anterior cruciate ligament reconstruction: a case control study, Orthop Traumatol Surg Res, 103, pp. 947-951, (2017); Gokeler A., Welling W., Zaffagnini S., Seil R., Padua D., Development of a test battery to enhance safe return to sports after anterior cruciate ligament reconstruction, Knee Surg Sports Traumatol Arthrosc, 25, pp. 192-199, (2017); Hanzlikova I., Athens J., Hebert-Losier K., Clinical implications of Landing Error Scoring System calculation methods, Phys Ther Sport, 44, pp. 61-66, (2020); Hewett T.E., Bates N.A., Preventive biomechanics: a paradigm shift with a translational approach to injury prevention, Am J Sports Med, 45, pp. 2654-2664, (2017); Ithurburn M.P., Longfellow M.A., Thomas S., Paterno M.V., Schmitt L.C., Knee function, strength, and resumption of preinjury sports participation in young athletes following anterior cruciate ligament reconstruction, J Orthop Sports Phys Ther, 49, pp. 145-153, (2019); Johnston P.T., McClelland J.A., Webster K.E., Lower limb biomechanics during single-leg landings following anterior cruciate ligament reconstruction: a systematic review and meta-analysis, Sports Med, 48, pp. 2103-2126, (2018); Kotsifaki A., Korakakis V., Whiteley R., Van Rossom S., Jonkers I., Measuring only hop distance during single leg hop testing is insufficient to detect deficits in knee function after ACL reconstruction: a systematic review and meta-analysis, Br J Sports Med, 54, pp. 139-153, (2020); Krosshaug T., Steffen K., Kristianslund E., Et al., The vertical drop jump is a poor screening test for ACL injuries in female elite soccer and handball players: a prospective cohort study of 710 athletes, Am J Sports Med, 44, pp. 874-883, (2016); Leppanen M., Pasanen K., Krosshaug T., Et al., Sagittal plane hip, knee, and ankle biomechanics and the risk of anterior cruciate ligament injury: a prospective study, Orthop J Sports Med, 5, (2017); Leppanen M., Pasanen K., Kujala U.M., Et al., Stiff landings are associated with increased ACL injury risk in young female basketball and floorball players, Am J Sports Med, 45, pp. 386-393, (2017); Levine J.W., Kiapour A.M., Quatman C.E., Et al., Clinically relevant injury patterns after an anterior cruciate ligament injury provide insight into injury mechanisms, Am J Sports Med, 41, pp. 385-395, (2013); Lindblom H., Hagglund M., Sonesson S., Intra- and interrater reliability of subjective assessment of the drop vertical jump and tuck jump in youth athletes, Phys Ther Sport, 47, pp. 156-164, (2021); van Melick N., van Cingel R.E.H., Brooijmans F., Et al., Evidence-based clinical practice update: practice guidelines for anterior cruciate ligament rehabilitation based on a systematic review and multidisciplinary consensus, Br J Sports Med, 50, pp. 1506-1515, (2016); Nae J., Creaby M.W., Nilsson G., Crossley K.M., Ageberg E., Measurement properties of a test battery to assess postural orientation during functional tasks in patients undergoing anterior cruciate ligament injury rehabilitation, J Orthop Sports Phys Ther, 47, pp. 863-873, (2017); Nagelli C.V., Wordeman S.C., Di Stasi S., Hoffman J., Marulli T., Hewett T.E., Neuromuscular training improves biomechanical deficits at the knee in anterior cruciate ligament-reconstructed athletes, Clin J Sport Med, 31, pp. 113-119, (2021); Noehren B., Snyder-Mackler L., Who’s afraid of the big bad wolf? Open-chain exercises after anterior cruciate ligament reconstruction, J Orthop Sports Phys Ther, 50, pp. 473-475, (2020); Padua D.A., DiStefano L.J., Beutler A.I., de L., Motte S.J., DiStefano M.J., Marshall S.W., The Landing Error Scoring System as a screening tool for an anterior cruciate ligament injury-prevention program in elite-youth soccer athletes, J Athl Train, 50, pp. 589-595, (2015); Poston G.R., Schmitt L.C., Ithurburn M.P., Hugentobler J.A., Thomas S., Paterno M.V., Reduced 2-D frontal plane motion during single-limb landing is associated with risk of future anterior cruciate ligament graft rupture after anterior cruciate ligament reconstruction and return to sport: a pilot study, J Orthop Sports Phys Ther, 51, pp. 82-87, (2021); Ward S.H., Blackburn J.T., Padua D.A., Et al., Quadriceps neuromuscular function and jump-landing sagittal-plane knee biomechanics after anterior cruciate ligament reconstruction, J Athl Train, 53, pp. 135-143, (2018); Welling W., Benjaminse A., Lemmink K., Gokeler A., Passing return to sports tests after ACL reconstruction is associated with greater likelihood for return to sport but fail to identify second injury risk, Knee, 27, pp. 949-957, (2020); Welling W., Benjaminse A., Seil R., Lemmink K., Gokeler A., Altered movement during single leg hop test after ACL reconstruction: implications to incorporate 2-D video movement analysis for hop tests, Knee Surg Sports Traumatol Arthrosc, 26, pp. 3012-3019, (2018); Wren T.A.L., Mueske N.M., Brophy C.H., Et al., Hop distance symmetry does not indicate normal landing biomechanics in adolescent athletes with recent anterior cruciate ligament reconstruction, J Orthop Sports Phys Ther, 48, pp. 622-629, (2018)","S. Di Paolo; Department for Life Quality Studies, University of Bologna, Bologna, Italy; email: stefano.dipaolo@ior.it","","SAGE Publications Inc.","19417381","","","35081839","English","Sports Health","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85124085153" "Della Villa F.; Buckthorpe M.; Tosarelli F.; Zago M.; Zaffagnini S.; Grassi A.","Della Villa, Francesco (55780654000); Buckthorpe, Matthew (54783962800); Tosarelli, Fillippo (57217386930); Zago, Matteo (57220045130); Zaffagnini, Stefano (7003438311); Grassi, Alberto (57205264407)","55780654000; 54783962800; 57217386930; 57220045130; 7003438311; 57205264407","Video analysis of Achilles tendon rupture in male professional football (soccer) players: injury mechanisms, patterns and biomechanics","2022","BMJ Open Sport and Exercise Medicine","8","3","e001419","","","","4","10.1136/bmjsem-2022-001419","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85142114661&doi=10.1136%2fbmjsem-2022-001419&partnerID=40&md5=c427f7543884a3f97fe6525b91765d10","Education and Research Department, Isokinetic Medical Group, Fifa Medical Centre of Excellence, Bologna, Italy; Allied Health and Performance Science, St Mary's University, Twickenham, London, United Kingdom; Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milano, Italy; IIa Clinica Ortopedica e Traumatologica, Istituto Ortopedico Rizzoli Irccs, Bologna, Italy","Della Villa F., Education and Research Department, Isokinetic Medical Group, Fifa Medical Centre of Excellence, Bologna, Italy; Buckthorpe M., Education and Research Department, Isokinetic Medical Group, Fifa Medical Centre of Excellence, Bologna, Italy, Allied Health and Performance Science, St Mary's University, Twickenham, London, United Kingdom; Tosarelli F., Education and Research Department, Isokinetic Medical Group, Fifa Medical Centre of Excellence, Bologna, Italy; Zago M., Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milano, Italy; Zaffagnini S., IIa Clinica Ortopedica e Traumatologica, Istituto Ortopedico Rizzoli Irccs, Bologna, Italy; Grassi A., IIa Clinica Ortopedica e Traumatologica, Istituto Ortopedico Rizzoli Irccs, Bologna, Italy","Background Achilles tendon rupture (ATR), while rare in football, is a severe career-threatening injury associated with long-layoff times. To date, no study has documented ATR's mechanism in professional football players. Aim To describe the mechanisms, situational patterns and gross biomechanics (kinematics) of ATR injuries in professional male football players. Methods Eighty-six (n=86) consecutive ATR injuries in professional football players during official matches were identified. Sixty (70%) injury videos were identified for mechanism and situational pattern, with biomechanical analysis feasible in 42 cases. Three independent reviewers evaluated the injury videos. Distribution of ATR during the season, the match play and on the field were also reported. Results Fifty (n=50, 83%) injuries were classified as non-contact and 10 (17%) as indirect contact. ATRs are injuries occurring during accelerations; three main situational patterns were identified: (1) forward acceleration from standing (n=25, 42%); (2) cross-over cutting (n=15, 25%) and (3) vertical jumping (n=11, 18%). Biomechanically, ATR injuries were consistent with a multiplanar loading at the injury frame consisting of a slightly flexed trunk (15.5°), extended hip (-19.5°), early flexed knee (22.5°) and end-range dorsiflexed (40°) ankle in the sagittal plane and foot pronation; 27 (45%) ATRs occurred in the first 30 min of effective match time. Conclusions All ATRs in professional football were either non-contact (83%) or indirect contact (17%) injuries. The most common situational patterns were forward acceleration from standing, cross-over cutting and vertical jumping. Biomechanics was consistent and probably triggered by a multiplanar, although predominantly sagittal, loading of the injured Achilles tendon. © 2022 BMJ Publishing Group. All rights reserved.","Achilles; biomechanics; football; injury","acceleration; achilles tendon; achilles tendon rupture; adult; ankle; Article; biomechanics; foot; football player; gastrocnemius muscle; hip; hip flexion angle; human; injury; jumping; kinematics; knee; knee flexion angle; major clinical study; male; medial collateral ligament; movement (physiology); professional athlete; sports medicine; trunk flexion angle; videorecording","Grassi A., Rossi G., D'Hooghe P., Et al., Eighty-Two per cent of male professional football (soccer) players return to play at the previous level two seasons after Achilles tendon rupture treated with surgical repair, Br J Sports Med, 54, pp. 480-486, (2020); Gajhede-Knudsen M., Ekstrand J., Magnusson H., Et al., Recurrence of Achilles tendon injuries in elite male football players is more common after early return to play: An 11-year follow-up of the UEFA champions League injury study, Br J Sports Med, 47, pp. 763-768, (2013); Grassi A., Caravelli S., Fuiano M., Et al., Epidemiology of Achilles tendon rupture in Italian first division football (soccer) players and their performance after return to play, Clin J Sport Med, 32, pp. e90-e95, (2022); Lantto I., Heikkinen J., Flinkkila T., Et al., Epidemiology of Achilles tendon ruptures: Increasing incidence over a 33-year period, Scand J Med Sci Sports, 25, pp. e133-e138, (2015); Bahr R., Krosshaug T., Understanding injury mechanisms: A key component of preventing injuries in sport, Br J Sports Med, 39, pp. 324-329, (2005); Della Villa F., Buckthorpe M., Grassi A., Et al., Systematic video analysis of ACL injuries in professional male football (soccer): Injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, Br J Sports Med, 54, pp. 1423-1432, (2020); Olsen O.-E., Myklebust G., Engebretsen L., Et al., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med, 32, pp. 1002-1012, (2004); Della Villa F., Tosarelli F., Ferrari R., Et al., Systematic video analysis of anterior cruciate ligament injuries in professional male rugby players: Pattern, injury mechanism, and biomechanics in 57 consecutive cases, Orthop J Sports Med, 9, (2021); 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Leventer L., Eek F., Hofstetter S., Et al., Injury patterns among elite football players: A media-based analysis over 6 seasons with emphasis on playing position, J Sports Med, 37, pp. 898-908, (2016); Locks R., Utsunomiya H., Briggs K.K., Et al., Return to play after hip arthroscopic surgery for femoroacetabular impingement in professional soccer players, Am J Sports Med, 46, pp. 273-279, (2018); Hoenig T., Edouard P., Krause M., Et al., Analysis of more than 20,000 injuries in European professional football by using a citizen science-based approach: An opportunity for epidemiological research?, J Sci Med Sport, 25, pp. 300-305, (2022); Lucarno S., Zago M., Buckthorpe M., Et al., Systematic video analysis of anterior cruciate ligament injuries in professional female soccer players, Am J Sports Med, 49, pp. 1794-1802, (2021); Walden M., Krosshaug T., Bjorneboe J., Et al., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: A systematic video analysis of 39 cases, Br J Sports Med, 49, pp. 1452-1460, (2015); DeLang M.D., Salamh P.A., Farooq A., Et al., The dominant leg is more likely to get injured in soccer players: Systematic review and meta-analysis, Biol Sport, 38, pp. 397-435, (2021); Cook J.L., Rio E., Purdam C.R., Et al., Revisiting the continuum model of tendon pathology: What is its merit in clinical practice and research?, Br J Sports Med, 50, pp. 1187-1191, (2016); Dos'Santos T., McBurnie A., Thomas C., Et al., Biomechanical comparison of cutting techniques: A review and practical applications, Strength Cond J, 41, pp. 40-54, (2019); Koga H., Nakamae A., Shima Y., Et al., Mechanisms for noncontact anterior cruciate ligament injuries: Knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, pp. 2218-2225, (2010); Montgomery C., Blackburn J., Withers D., Et al., Mechanisms of ACL injury in professional rugby Union: A systematic video analysis of 36 cases, Br J Sports Med, 52, pp. 994-1001, (2018); Della Villa F., Esposito F., Busa M., Et al., The three-dimensional reconstruction of an Achilles tendon rupture in a professional football player reveals a multiplanar injury mechanism, Knee Surg Sports Traumatol Arthrosc, 116, (2022); Nagelli C.V., Hooke A., Quirk N., Et al., Mechanical and strain behaviour of human Achilles tendon during in vitro testing to failure, Eur Cell Mater, 43, pp. 153-161, (2022); Pandy M.G., Lai A.K.M., Schache A.G., Et al., How muscles maximize performance in accelerated sprinting, Scand J Med Sci Sports, 31, pp. 1882-1896, (2021); Baggett B.D., Young G., Ankle joint dorsiflexion establishment of a normal range, J Am Podiatr Med Assoc, 83, pp. 251-254, (1993); Jozsa L., Kannus P., Human tendons: anatomy, physiology, and pathology, (1997); Maffulli N., Rupture of the achilles tendon, J Bone Joint Surg, 81 A, pp. 1019-1036, (1999); Jielile J., Bai J.P., Sabirhazi G., Et al., Factors influencing the tensile strength of repaired Achilles tendon: A biomechanical experiment study, Clin Biomech, 25, pp. 789-795, (2010); Donoghue O.A., Harrison A.J., Laxton P., Et al., Orthotic control of rear foot and lower limb motion during running in participants with chronic Achilles tendon injury, Sports Biomech, 7, pp. 194-205, (2008); Donoghue O.A., Harrison A.J., Laxton P., Et al., Lower limb kinematics of subjects with chronic Achilles tendon injury during running, Res Sports Med, 16, pp. 23-38, (2008); Ryan M., Grau S., Krauss I., Et al., Kinematic analysis of runners with Achilles mid-portion tendinopathy, Foot Ankle Int, 30, pp. 1190-1195, (2009); Woods C., Hawkins R., Hulse M., Et al., The football association medical research programme: An audit of injuries in professional football-analysis of preseason injuries, Br J Sports Med, 36, pp. 436-441, (2002); Buckthorpe M., Optimising the late-stage rehabilitation and return-to- sport training and testing process after ACL reconstruction, Sports Med, 49, pp. 1043-1058, (2019); Akenhead R., Hayes P.R., Thompson K.G., Et al., Diminutions of acceleration and deceleration output during professional football match play, J Sci Med Sport, 16, pp. 556-561, (2013); Russell M., Sparkes W., Northeast J., Et al., Changes in acceleration and deceleration capacity throughout professional soccer match-play, J Strength Cond Res, 30, pp. 2839-2844, (2016); Walden M., Hagglund M., Magnusson H., Et al., ACL injuries in men's professional football: A 15-year prospective study on time trends and return-to- play rates reveals only 65% of players still play at the top level 3 years after ACL rupture, Br J Sports Med, 50, pp. 744-750, (2016)","F. Della Villa; Education and Research Department, Isokinetic Medical Group, Fifa Medical Centre of Excellence, Bologna, Italy; email: f.dellavilla@isokinetic.com","","BMJ Publishing Group","20557647","","","","English","BMJ Open Sport Exerc. Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85142114661" "Caccese J.B.; Santos F.V.; Yamaguchi F.; Jeka J.J.","Caccese, Jaclyn B. (57189060030); Santos, Fernando V. (57218423870); Yamaguchi, Felipe (57218423423); Jeka, John J. (6603740007)","57189060030; 57218423870; 57218423423; 6603740007","Age of First Exposure to Soccer Heading and Sensory Reweighting for Upright Stance","2020","International Journal of Sports Medicine","41","9","","616","627","11","5","10.1055/a-1141-3553","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85089163236&doi=10.1055%2fa-1141-3553&partnerID=40&md5=0cb651d4781a5d2cf57cc4544614d255","Ohio State University, School of Health and Rehabilitation Sciences, College of Medicine, 453 W 10th Ave 43210, Columbus, 570-417-4780, United States; Bertec Corporation, Columbus, United States; College of Health Sciences, Kinesiology and Applied Physiology, University of Delaware, Newark, United States","Caccese J.B., Ohio State University, School of Health and Rehabilitation Sciences, College of Medicine, 453 W 10th Ave 43210, Columbus, 570-417-4780, United States; Santos F.V., Bertec Corporation, Columbus, United States; Yamaguchi F., College of Health Sciences, Kinesiology and Applied Physiology, University of Delaware, Newark, United States; Jeka J.J., College of Health Sciences, Kinesiology and Applied Physiology, University of Delaware, Newark, United States","US Soccer eliminated soccer heading for youth players ages 10 years and younger and limited soccer heading for children ages 11-13 years. Limited empirical evidence associates soccer heading during early adolescence with medium-to-long-term behavioral deficits. The purpose of this study was to compare sensory reweighting for upright stance between college-aged soccer players who began soccer heading ages 10 years and younger (AFE ≤ 10) and those who began soccer heading after age 10 (AFE > 10). Thirty soccer players self-reported age of first exposure (AFE) to soccer heading. Sensory reweighting was compared between AFE ≤ 10 and AFE > 10. To evaluate sensory reweighting, we simultaneously perturbed upright stance with visual, vestibular, and proprioceptive stimulation. The visual stimulus was presented at two different amplitudes to measure the change in gain to vision, an intra-modal effect; and change in gain to galvanic vestibular stimulus (GVS) and vibration, both inter-modal effects. There were no differences in gain to vision (p=0.857, η2=0.001), GVS (p=0.971, η2=0.000), or vibration (p=0.974, η2=0.000) between groups. There were no differences in sensory reweighting for upright stance between AFE ≤ 10 and AFE > 10, suggesting that soccer heading during early adolescence is not associated with balance deficits in college-aged soccer players, notwithstanding potential deficits in other markers of neurological function. © 2020 Royal Society of Chemistry. All rights reserved.","balance; concussion; neurodevelopment; postural control; subconcussion","Adolescent; Adult; Age Factors; Auditory Perception; Biomechanical Phenomena; Brain Concussion; Child; Head; Humans; Motor Skills; Postural Balance; Soccer; Vestibule, Labyrinth; Vibration; Visual Perception; Young Adult; adolescent; adult; age; biomechanics; body equilibrium; brain concussion; child; head; hearing; human; motor performance; physiology; soccer; vestibular labyrinth; vibration; vision; young adult","Yang Y.T., Baugh C.M., US youth soccer concussion policy: Heading in the right direction, JAMA Pediatr, 170, pp. 413-414, (2016); Kerr Z.Y., Campbell K.R., Fraser M.A., Head impact locations in US high school boys' and girls' soccer concussions, 2012/13-2015/16, J Neurotrauma, 36, pp. 2073-2082, (2019); Kontos A.P., Braithwaite R., Chrisman S.P., Systematic review and meta-analysis of the effects of football heading, Br J Sports Med, 51, pp. 1118-1124, (2017); Maher M.E., Hutchison M., Cusimano M., Concussions and heading in soccer: A review of the evidence of incidence, mechanisms, biomarkers and neurocognitive outcomes, Brain Inj, 28, pp. 271-285, (2014); Stamm J.M., Koerte I.K., Muehlmann M., Age at first exposure to football is associated with altered corpus callosum white matter microstructure in former professional football players, J Neurotrauma, 32, pp. 1768-1776, (2015); Schultz V., Stern R.A., Tripodis Y., Age at first exposure to repetitive head impacts is associated with smaller thalamic volumes in former professional American football players, J Neurotrauma, 35, pp. 278-285, (2018); Alosco M.L., Kasimis A.B., Stamm J.M., Age of first exposure to American football and long-term neuropsychiatric and cognitive outcomes, Transl Psychiatry, 7, (2017); Stamm J.M., Bourlas A.P., Baugh C.M., Age of first exposure to football and later-life cognitive impairment in former NFL players, Neurology, 84, pp. 1114-1120, (2015); Alosco M.L., Mez J., Tripodis Y., Age of first exposure to tackle football and chronic traumatic encephalopathy, Ann Neurol, 83, pp. 886-901, (2018); Caccese J.B., Iverson G.L., Cameron K.L., Estimated age of first exposure to contact sports is not associated with greater symptoms or worse cognitive functioning in U.S. Service Academy Athletes, J Neurotrauma, 37, pp. 334-339, (2020); Caccese J.B., Dewolf R.M., Kaminski T.W., Estimated age of first exposure to american football and neurocognitive performance amongst NCAA male student-athletes: A cohort study, Sports Med, 49, pp. 477-487, (2019); Brett B.L., Huber D.L., Wild A., Age of first exposure to american football and behavioral, cognitive, psychological, and physical outcomes in high school and collegiate football players, Sports Health, 11, pp. 332-342, (2019); Caccese J.B., Lamond L.C., Buckley T.A., Reducing purposeful headers from goal kicks and punts may reduce cumulative exposure to head acceleration, Res Sports Med, 24, pp. 407-415, (2016); Lamond L.C., Caccese J.B., Buckley T.A., Linear acceleration in direct head contact across impact type, player position, and playing scenario in collegiate women's soccer players, J Athl Train, 53, pp. 115-121, (2018); Mackay D.F., Russell E.R., Stewart K., Neurodegenerative disease mortality among former professional soccer players, N Engl J Med, 381, pp. 1801-1808, (2019); Lipton M.L., Kim N., Zimmerman M.E., Soccer heading is associated with white matter microstructural and cognitive abnormalities, Radiology, 268, pp. 850-857, (2013); Downs D.S., Abwender D., Neuropsychological impairment in soccer athletes, J Sport Med Phys Fitness, 42, pp. 103-107, (2002); Straume-Naesheim T.M., Andersen T.E., Dvorak J., Effects of heading exposure and previous concussions on neuropsychological performance among Norwegian elite footballers, Br J Sports Med, 39, pp. i70-i77, (2005); Tysvaer A.T., Lochen E.A., Soccer injuries to the brain: A neuropsychologic study of former soccer players, Am J Sports Med, 19, pp. 56-60, (1991); Sortland O., Tysvaer A.T., Brain damage in former association football players, Neuroradiology, 31, pp. 44-48, (1989); O'Kane J.W., Is heading in youth soccer dangerous play?, Phys Sportsmed, 44, pp. 190-194, (2016); Putukian M., Heading in soccer: Is it safe?, Curr Sports Med Rep, 3, pp. 9-14, (2004); Broglio S.P., McCrea M., McAllister T., A national study on the effects of concussion in collegiate athletes and US military service academy members: The NCAA-DoD concussion assessment, research and education (CARE) consortium structure and methods, Sports Med, 47, pp. 1437-1451, (2017); Broglio S.P., Kontos A.P., Levin H., The National Institute of Neurological Disorders and Stroke and Department of Defense sport-related concussion common data elements version 1.0 recommendations, J Neurotrauma, 35, pp. 2776-2783, (2018); Hwang S., Agada P., Kiemel T., Dynamic reweighting of three modalities for sensor fusion, PLoS One, 9, (2014); Alosco M.L., Stern R.A., Youth exposure to repetitive head impacts from tackle football and long-term neurologic outcomes: A review of the literature, knowledge gaps and future directions, and societal and clinical implications, Semin Pediatr Neurol, 30, pp. 107-116, (2019); Foster E.C., Sveistrup H., Woollacott M.H., Transitions in visual proprioception: A cross-sectional developmental study of the effect of visual flow on postural control, J Mot Behav, 28, pp. 101-112, (1996); Barela J., Jeka J.J., Clark J.E., The use of somatosensory information during the acquisition of independent upright stance, Infant Behav Dev, 22, pp. 87-102, (1999); Barela J.A., Jeka J.J., Clark J.E., Postural control in children, Exp Brain Res, 150, pp. 434-442, (2003); Bair W., Kiemel T., Jeka J.J., Development of multisensory reweighting for posture control in children, Exp Brain Res, 183, pp. 435-446, (2007); Forssberg H., Nashner L.M., Ontogenetic development of postural control in man: Adaptation to altered support and visual conditions during stance, J Neurosci, 2, pp. 545-552, (1982); Harriss D.J., Macsween A., Atkinson G., Ethical standards in sport and exercise science research: 2020 update, Int J Sports Med, 40, pp. 813-817, (2019); Prieto T.E., Myklebust J.B., Hoffmann R.G., Measures of postural steadiness: Differences between healthy young and elderly adults, IEEE Trans Biomed Eng, 43, pp. 956-966, (1996); Echemendia R.J., Meeuwisse W., McCrory P., The sport concussion assessment tool 5th edition (SCAT5): Background and rationale, Br J Sports Med, 51, pp. 848-850, (2017); Solomon G.S., Kuhn A.W., Zuckerman S.L., Participation in Pre-High school football and neurological, neuroradiological, and neuropsychological findings in later life: A study of 45 retired National Football League players, Am J Sports Med, 44, pp. 1106-1115, (2016); Caccese J.B., Kaminski T.W., Minimizing head acceleration in soccer: A review of the literature, Sports Med, 46, pp. 1591-1604, (2016); Caccese J.B., Buckley T.A., Tierney R.T., Sex and age differences in head acceleration during purposeful soccer heading, Res Sports Med, 26, pp. 64-74, (2018); Caccese J.B., Buckley T.A., Tierney R.T., Head and neck size and neck strength predict linear and rotational acceleration during purposeful soccer heading, Sports Biomech, 17, pp. 462-476, (2018); Schmidt J.D., Rizzone K., Hoffman N.L., Age at first concussion influences the number of subsequent concussions, Pediatr Neurol, 81, pp. 19-24, (2018); Buckley T.A., Oldham J.R., Caccese J.B., Postural control deficits identify lingering post-concussion neurological deficits, J Sport Health Sci, 5, pp. 61-69, (2016)","J.B. Caccese; Ohio State University, School of Health and Rehabilitation Sciences, College of Medicine, Columbus, 453 W 10th Ave 43210, 570-417-4780, United States; email: jaclyn.caccese@osumc.edu","","Georg Thieme Verlag","01724622","","IJSMD","32365387","English","Int. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85089163236" "Waxman J.P.; Ford K.R.; Nguyen A.-D.; Taylor J.B.","Waxman, Justin P. (55829605000); Ford, Kevin R. (7102539333); Nguyen, Anh-Dung (12805987900); Taylor, Jeffrey B. (55829673200)","55829605000; 7102539333; 12805987900; 55829673200","Female athletes with varying levels of vertical stiffness display kinematic and kinetic differences during single-leg hopping","2018","Journal of Applied Biomechanics","34","1","","65","75","10","6","10.1123/jab.2017-0144","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042674042&doi=10.1123%2fjab.2017-0144&partnerID=40&md5=78afc168afc137beba3925be65fbe33b","Department of Physical Therapy, High Point University, High Point, NC, United States; Department of Athletic Training, High Point University, High Point, NC, United States","Waxman J.P., Department of Physical Therapy, High Point University, High Point, NC, United States; Ford K.R., Department of Physical Therapy, High Point University, High Point, NC, United States; Nguyen A.-D., Department of Athletic Training, High Point University, High Point, NC, United States; Taylor J.B., Department of Physical Therapy, High Point University, High Point, NC, United States","Vertical stiffness may contribute to lower-extremity injury risk; however, it is unknown whether athletes with different stiffness levels display differences in biomechanics. This study compared differences in biomechanics between female athletes (n = 99) with varying stiffness levels during a repetitive, single-leg, vertical hopping task. Vertical stiffness was calculated as the ratio of peak vertical ground-reaction force to maximum center-of-mass displacement. Tertiles were established using stiffness values, and separate 1-way ANOVAs were used to evaluate between-group differences. Stance times decreased, and flight times, ground-reaction force, and stiffness increased, from the low- to high-stiffness group (P < .050). The high-stiffness group displayed: (1) greater lateral trunk flexion (P = .009) and lesser hip adduction (P = .022) at initial ground contact compared to the low- and moderate-stiffness groups, respectively; (2) lesser peak hip adduction compared to the low-stiffness group (P = .040); (3) lesser lateral trunk-flexion (P = .046) and knee-flexion (P = .010) excursion compared to the moderate- and low-stiffness groups, respectively; and (4) greater peak hip-flexion (P = .001), ankle-dorsiflexion (P = .002), and ankle-eversion (P = .038) moments compared to the low-stiffness group. A wide range of variability in stiffness exists within a relatively homogenous population. Athletes with varying stiffness levels display biomechanical differences that may help identify the potential mechanism(s) by which stiffness contributes to injury risk. © 2018 Human Kinetics, Inc.","Biomechanics; Female athlete; Leg spring; Spring-mass model","Adolescent; Athletes; Basketball; Biomechanical Phenomena; Female; Humans; Lower Extremity; Movement; Range of Motion, Articular; Soccer; Biomechanics; Biophysics; Gait analysis; Physiological models; Female athlete; Ground reaction forces; Group differences; Leg springs; Lower extremity injuries; Potential mechanism; Spring mass models; Vertical stiffness; accident prevention; adduction; adolescent; analysis of variance; Article; athlete; biomechanics; comparative study; controlled study; female; ground reaction force; hip; human; human experiment; jumping; kinematics; kinetic parameters; randomized controlled trial; range of motion; rigidity; single leg hopping; vertical stiffness; athlete; basketball; joint characteristics and functions; lower limb; movement (physiology); physiology; soccer; Stiffness","Serpell B.G., Ball N.B., Scarvell J.M., Smith P.N., A review of models of vertical, leg, and knee stiffness in adults for running, jumping or hopping tasks, J Sports Sci, 30, 13, pp. 1347-1363, (2012); Butler R.J., Crowell H.P., Davis I.M., Lower extremity stiffness: Implications for performance and injury, Clin Biomech, 18, 6, pp. 511-517, (2003); Korff T., Horne S.L., Cullen S.J., Blazevich A.J., Development of lower limb stiffness and its contribution to maximum vertical jumping power during adolescence, J Exp Biol, 212, pp. 3737-3742, (2009); Bret C., Rahmani A., Dufour A.B., Messonnier L., Lacour J.R., Leg strength and stiffness as ability factors in 100 m sprint running, J Sports Med Phys Fitness, 42, 3, pp. 274-281, (2002); Chelly S.M., Denis C., Leg power and hopping stiffness: Relationship with sprint running performance, Med Sci Sports Exerc, 33, 2, pp. 326-333, (2001); Hobara H., Inoue K., Gomi K., Et al., Continuous change in spring-mass characteristics during a 400 m sprint, J Sci Med Sport, 13, 2, pp. 256-261, (2010); Hobara H., Tominaga S., Umezawa S., Et al., Leg stiffness and sprint ability in amputee sprinters, Prosthet Orthot Int, 36, 3, pp. 312-317, (2012); Dalleau G., Belli A., Bourdin M., Lacour J.R., The spring-mass model and the energy cost of treadmill running, Eur J Appl Physiol Occup Physiol, 77, 3, pp. 257-263, (1998); Barnes K.R., Hopkins W.G., McGuigan M.R., Kilding A.E., Warm-up with a weighted vest improves running performance via leg stiffness and running economy, J Sci Med Sport, 18, 1, pp. 103-108, (2015); Bryant A.L., Kelly J., Hohmann E., Neuromuscular adaptations and correlates of knee functionality following acl reconstruction, J Orthop Res, 26, 1, pp. 126-135, (2008); Eiling E., Bryant A.L., Petersen W., Murphy A., Hohmann E., Effects of menstrual-cycle hormone fluctuations on musculotendinous stiffness and knee joint laxity, Knee Surg Sports Traumatol Arthrosc, 15, 2, pp. 126-132, (2007); Granata K.P., Padua D.A., Wilson S.E., Gender differences in active musculoskeletal stiffness. Part II. Quantification of leg stiffness during functional hopping tasks, J Electromyogr Kinesiol, 12, 2, pp. 127-135, (2002); Padua D.A., Carcia C.R., Arnold B.L., Granata K.P., Gender differences in leg stiffness and stiffness recruitment strategy during two-legged hopping, J Mot Behav, 37, 2, pp. 111-126, (2005); Williams D.S., Davis I.M., Scholz J.P., Hamill J., Buchanan T.S., Higharched runners exhibit increased leg stiffness compared to low-arched runners, Gait Posture, 19, 3, pp. 263-269, (2004); Williams D.S., McClay I.S., Hamill J., Arch structure and injury patterns in runners, Clin Biomech, 16, 4, pp. 341-347, (2001); Blickhan R., The spring-mass model for running and hopping, J Biomech, 22, 11-12, pp. 1217-1227, (1989); McMahon T.A., Cheng G.C., The mechanics of running: How does stiffness couple with speed?, J Biomech, 23, pp. 65-78, (1990); Cavagna G.A., Force platforms as ergometers, J Appl Physiol, 39, 1, pp. 174-179, (1975); Latash M.L., Zatsiorsky V.M., Joint stiffness: Myth or reality?, Hum Mov Sci, 12, 6, pp. 653-692, (1993); Lloyd R.S., Oliver J.L., Hughes M.G., Williams C.A., Reliability and validity of field-based measures of leg stiffness and reactive strength index in youths, J Sports Sci, 27, 14, pp. 1565-1573, (2009); Dalleau G., Belli A., Viale F., Lacour J.R., Bourdin M., A simple method for field measurements of leg stiffness in hopping, Int J Sports Med, 25, 3, pp. 170-176, (2004); Waxman J.P., Schmitz R.J., Shultz S.J., The interday measurement consistency of and relationships between hamstring and leg musculoarticular stiffness, J Appl Biomech, 31, 5, pp. 340-348, (2015); Dupeyron A., Hertzog M., Micallef J.P., Perrey S., Does an abdominal strengthening program influence leg stiffness during hopping tasks?, J Strength Cond Res, 27, 8, pp. 2129-2133, (2013); Hobara H., Muraoka T., Omuro K., Et al., Knee stiffness is a major determinant of leg stiffness during maximal hopping, J Biomech, 42, 11, pp. 1768-1771, (2009); Hobara H., Inoue K., Omuro K., Muraoka T., Kanosue K., Determinant of leg stiffness during hopping is frequency-dependent, Eur J Appl Physiol, 111, 9, pp. 2195-2201, (2011); Hobara H., Kimura K., Omuro K., Et al., Determinants of difference in leg stiffness between endurance- and power-trained athletes, J Biomech, 41, 3, pp. 506-514, (2008); Hobara H., Kato E., Kobayashi Y., Ogata T., Sex differences in relationship between passive ankle stiffness and leg stiffness during hopping, J Biomech, 45, 16, pp. 2750-2754, (2012); Lorimer A.V., Hume P.A., Stiffness as a risk factor for achilles tendon injury in running athletes, Sports Med, 46, 12, pp. 1921-1938, (2016); Pruyn E.C., Watsford M.L., Murphy A.J., Et al., Relationship between leg stiffness and lower body injuries in professional Australian football, J Sports Sci, 30, 1, pp. 71-78, (2012); Serpell B.G., Scarvell J.M., Ball N.B., Smith P.N., Vertical stiffness and muscle strain in professional australian football, J Sports Sci, 32, 20, pp. 1924-1930, (2014); Serpell B.G., Scarvell J.M., Pickering M.R., Et al., Vertical stiffness is not related to anterior cruciate ligament elongation in professional rugby union players, BMJ Open Sport Exerc Med, 2, (2016); Watsford M.L., Murphy A.J., McLachlan K.A., Et al., A prospective study of the relationship between lower body stiffness and hamstring injury in professional australian rules footballers, Am J Sports Med, 38, 10, pp. 2058-2064, (2010); Taylor J.B., Ford K.R., Nguyen A.D., Shultz S.J., Biomechanical comparison of single-and double-leg jump landings in the sagittal and frontal plane, Orthop J Sports Med, 4, 6, (2016); Joseph C.W., Bradshaw E.J., Kemp J., Clark R.A., The interday reliability of ankle, knee, leg, and vertical musculoskeletal stiffness during hopping and overground running, J Appl Biomech, 29, 4, pp. 386-394, (2013); Farley C.T., Blickhan R., Saito J., Taylor C.R., Hopping frequency in humans: A test of how springs set stride frequency in bouncing gaits, J Appl Physiol, 71, 6, pp. 2127-2132, (1991); Arampatzis A., Schade F., Walsh M., Bruggemann G.P., Influence of leg stiffness and its effect on myodynamic jumping performance, J Electromyogr Kinesiol, 11, 5, pp. 355-364, (2001); Bell A.L., Brand R.A., Pedersen D.R., Prediction of hip-joint center location from external landmarks, Hum Mov Sci, 8, 1, pp. 3-16, (1989); Winter D.A., Biomechanics and Motor Control of Human Movement, pp. 86-117, (2005); Bishop M., Fiolkowski P., Conrad B., Brunt D., Horodyski M., Athletic footwear, leg stiffness, and running kinematics, J Athl Train, 41, 4, pp. 387-392, (2006); Hobara H., Inoue K., Kanosue K., Effect of hopping frequency on bilateral differences in leg stiffness, J Appl Biomech, 29, 1, pp. 55-60, (2013); Brauner T., Sterzing T., Wulf M., Horstmann T., Leg stiffness: Comparison between unilateral and bilateral hopping tasks, Hum Mov Sci, 33, pp. 263-272, (2014); Ford K.R., Myer G.D., Hewett T.E., Longitudinal effects of maturation on lower extremity joint stiffness in adolescent athletes, Am J Sports Med, 38, 9, pp. 1829-1837, (2010); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Devita P., Skelly W.A., Effect of landing stiffness on joint kinetics and energetics in the lower extremity, Med Sci Sports Exerc, 24, 1, pp. 108-115, (1992); Dierks T.A., Manal K.T., Hamill J., Davis I.S., Proximal and distal influences on hip and knee kinematics in runners with patellofemoral pain during a prolonged run, J Orthop Sports Phys Ther, 38, 8, pp. 448-456, (2008); Souza R.B., Powers C.M., Differences in hip kinematics, muscle strength, and muscle activation between subjects with and without patellofemoral pain, J Orthop Sports Phys Ther, 39, 1, pp. 12-19, (2009); Hewett T.E., Torg J.S., Boden B.P., Video analysis of trunk and knee motion during non-contact anterior cruciate ligament injury in female athletes: Lateral trunk and knee abduction motion are combined components of the injury mechanism, Br J Sports Med, 43, 6, pp. 417-422, (2009); Hunt M.A., Birmingham T.B., Bryant D., Et al., Lateral trunk lean explains variation in dynamic knee joint load in patients with medial compartment knee osteoarthritis, Osteoarthritis Cartilage, 16, 5, pp. 591-599, (2008); Myer G.D., Ford K.R., Barber Foss K.D., Et al., The incidence and potential pathomechanics of patellofemoral pain in female athletes, Clin Biomech, 25, 7, pp. 700-707, (2010)","J.P. Waxman; Department of Physical Therapy, High Point University, High Point, United States; email: jwaxman@highpoint.edu","","Human Kinetics Publishers Inc.","10658483","","JABOE","28952871","English","J. Appl. Biomech.","Article","Final","","Scopus","2-s2.0-85042674042" "Jeras N.M.J.; Bovend’Eerdt T.J.H.; McCrum C.","Jeras, Nathalie M. J. (57211461325); Bovend’Eerdt, Thamar J. H. (35933300200); McCrum, Christopher (41762142000)","57211461325; 35933300200; 41762142000","Biomechanical mechanisms of jumping performance in youth elite female soccer players","2020","Journal of Sports Sciences","38","11-12","","1335","1341","6","7","10.1080/02640414.2019.1674526","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85074021466&doi=10.1080%2f02640414.2019.1674526&partnerID=40&md5=23cb9f3c93b90d404ea794ef6749e539","Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands; Strength and Conditioning TeamNL, NOC*NSF, Arnhem, Netherlands; Institute of Movement and Sport Gerontology, German Sport University Cologne, Cologne, Germany","Jeras N.M.J., Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands, Strength and Conditioning TeamNL, NOC*NSF, Arnhem, Netherlands; Bovend’Eerdt T.J.H., Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands; McCrum C., Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands, Institute of Movement and Sport Gerontology, German Sport University Cologne, Cologne, Germany","We aimed to determine key biomechanical parameters explaining age-related jumping performance differences in youth elite female soccer players. Multiple biomechanical parameters from countermovement (CMJ) squat (SJ) and drop (DJ) jump testing of elite female soccer players (n = 60) within the same national training centre were analysed across ages 9-11y, 12-14y and 15-19y. Effects of age group and jump type on jump height were found, with the older jumping higher than the younger groups in all jumps (P < 0.05). For DJ, higher reactive strength index was found for older, compared to each younger group (P < 0.001). For CMJ and SJ, peak power was the most decisive characteristic, with significant differences between each group for absolute peak power (P < 0.0001) and body-weight-normalised peak power in CMJ (57 ± 7W/kg, 50 ± 7W/kg, 44.7 ± 5.5W/kg; P < 0.05) and between the older and each younger group in SJ (56.7 ± 7.1W/kg, 48.9 ± 7.1W/kg, 44.6 ± 6W/kg; P < 0.01). Age-related differences in jumping performance in youth elite female soccer players appear to be due to power production during standing jumps and by the ability to jump with shorter ground contact times during reactive jumps. © 2019, © 2019 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.","Countermovement jump; football; plyometric exercise; sports performance; squat jump","Adolescent; Age Factors; Athletic Performance; Biomechanical Phenomena; Child; Exercise Test; Female; Humans; Motor Skills; Muscle Strength; Plyometric Exercise; Retrospective Studies; Soccer; Young Adult; adolescent; article; athletic performance; body weight; child; contact time; controlled study; female; football; human; jumping; juvenile; major clinical study; plyometrics; school child; soccer player; age; athletic performance; biomechanics; exercise test; motor performance; muscle strength; physiology; plyometrics; procedures; psychology; retrospective study; soccer; young adult","Castagna C., Castellini E., Vertical jump performance in Italian male and female national team soccer players, Journal of Strength and Conditioning Research, 27, 4, pp. 1156-1161, (2013); Cometti G., Maffiuletti N.A., Pousson M., Chatard J.C., Maffulli N., Isokinetic strength and anaerobic power of elite, subelite and amateur French soccer players, International Journal of Sports Medicine, 22, 1, pp. 45-51, (2001); Gissis I., Papadopoulos C., Kalapotharakos V.I., Sotiropoulos A., Komsis G., Manolopoulos E., Strength and speed characteristics of elite, subelite, and recreational young soccer players, Research in Sports Medicine, 14, 3, pp. 205-214, (2006); Hannah R., Minshull C., Buckthorpe M.W., Folland J.P., Explosive neuromuscular performance of males versus females, Experimental Physiology, 97, 5, pp. 618-629, (2012); Haugen T.A., Tonnessen E., Seiler S., Speed and countermovement-jump characteristics of elite female soccer players, 1995–2010, International Journal of Sports Physiology and Performance, 7, 4, pp. 340-349, (2012); Helgerud J., Hoff J., Wisloff U., Gender differences in strength and endurance of elite soccer players, Science and football IV, (2002); Hoare D.G., Warr C.R., Talent identification and women’s soccer: An Australian experience, Journal of Sports Sciences, 18, 9, pp. 751-758, (2000); Jeffreys I., Warm-up revisited: The ramp method of optimizing warm-ups, Professional Strength and Conditioning, 6, pp. 15-19, (2007); Manson S.A., Brughelli M., Harris N.K., Physiological characteristics of international female soccer players, Journal of Strength and Conditioning Research, 28, 2, pp. 308-318, (2014); Moir G.L., Three different methods of calculating vertical jump height from force platform data in men and women, Measurement in Physical Education and Exercise Science, 12, 4, pp. 207-218, (2008); Mujika I., Santisteban J., Impellizzeri F.M., Castagna C., Fitness determinants of success in men’s and women’s football, Journal of Sports Sciences, 27, 2, pp. 107-114, (2009); Ramos-Campo D.J., Rubio-Arias J.A., Carrasco-Poyatos M., Alcaraz P.E., Physical performance of elite and subelite Spanish female futsal players, Biology of Sport, 33, 3, pp. 297-304, (2016); Reilly T., Williams A.M., Nevill A., Franks A., A multidisciplinary approach to talent identification in soccer, Journal of Sports Sciences, 18, 9, pp. 695-702, (2000); Sheppard J.M., Chapman D.W., Gough C., McGuigan M.R., Newton R.U., Twelve-month training-induced changes in elite international volleyball players, Journal of Strength and Conditioning Research, 23, 7, pp. 2096-2101, (2009); Sheppard J.M., Cronin J.B., Gabbett T.J., McGuigan M.R., Etxebarria N., Newton R.U., Relative importance of strength, power, and anthropometric measures to jump performance of elite volleyball players, Journal of Strength and Conditioning Research, 22, 3, pp. 758-765, (2008); Sheppard J.M., Nolan E., Newton R.U., Changes in strength and power qualities over two years in volleyball players transitioning from junior to senior national team, Journal of Strength and Conditioning Research, 26, 1, pp. 152-157, (2012); Silva J.R., Nassis G.P., Rebelo A., Strength training in soccer with a specific focus on highly trained players, Sports Medicine - Open, 1, 1, (2015); Smith R., Ford K.R., Myer G.D., Holleran A., Treadway E., Hewett T.E., Biomechanical and performance differences between female soccer athletes in national collegiate athletic association divisions I and III, Journal of Athletic Training, 42, 4, pp. 470-476, (2007); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer: An update, Sports Medicine, 35, 6, pp. 501-536, (2005); Svensson M., Drust B., Testing soccer players, Journal of Sports Sciences, 23, 6, pp. 601-618, (2005); Van Hooren B., Zolotarjova J., The difference between countermovement and squat jump performances: A review of underlying mechanisms with practical applications, Journal of Strength and Conditioning Research, 31, 7, pp. 2011-2020, (2017); Van Praagh E., Dore E., Short-term muscle power during growth and maturation, Sports Medicine, 32, 11, pp. 701-728, (2002); Vescovi J.D., McGuigan M.R., Relationships between sprinting, agility, and jump ability in female athletes, Journal of Sports Sciences, 26, 1, pp. 97-107, (2008); Vescovi J.D., Rupf R., Brown T.D., Marques M.C., Physical performance characteristics of high-level female soccer players 12–21 years of age, Scandinavian Journal of Medicine and Science in Sports, 21, 5, pp. 670-678, (2011); Vincent J., Glamser F.D., Gender differences in the relative age effect among US olympic development program youth soccer players, Journal of Sports Sciences, 24, 4, pp. 405-413, (2006); Wang Y.C., Zhang N., Effects of plyometric training on soccer players, Experimental and Therapeutic Medicine, 12, 2, pp. 550-554, (2016)","C. McCrum; Department of Nutrition and Movement Sciences, Maastricht University, Maastricht, PO Box 616, 6200 MD, Netherlands; email: chris.mccrum@maastrichtuniversity.nl","","Routledge","02640414","","JSSCE","31575323","English","J. Sports Sci.","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85074021466" "Blair S.; Robertson S.; Duthie G.; Ball K.","Blair, Stephanie (55798362900); Robertson, Sam (55015323500); Duthie, Grant (12779255100); Ball, Kevin (7101771783)","55798362900; 55015323500; 12779255100; 7101771783","Biomechanics of accurate and inaccurate goal-kicking in Australian football: Group-based analysis","2020","PLoS ONE","15","11 November","e0241969","","","","5","10.1371/journal.pone.0241969","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096083114&doi=10.1371%2fjournal.pone.0241969&partnerID=40&md5=0e6fad040df22f37038a737d9d46c0ad","Institute for Health and Sport (IHES), Victoria University, Melbourne, Australia; English Institute of Sport, Manchester, United Kingdom; School of Exercise Science, Australian Catholic University, Sydney, Australia","Blair S., Institute for Health and Sport (IHES), Victoria University, Melbourne, Australia, English Institute of Sport, Manchester, United Kingdom; Robertson S., Institute for Health and Sport (IHES), Victoria University, Melbourne, Australia; Duthie G., Institute for Health and Sport (IHES), Victoria University, Melbourne, Australia, School of Exercise Science, Australian Catholic University, Sydney, Australia; Ball K., Institute for Health and Sport (IHES), Victoria University, Melbourne, Australia","Goal-kicking is an important skill in Australian Football (AF). This study examined whether kinematic differences exist between accurate and inaccurate goal-kicks and determined the relationships between technical factors and accuracy. Eighteen elite to sub-elite AF players performed 15 x 30 m goal-kicks on an AF training ground, with three-dimensional kinematics collected using the Xsens inertial measurement system (Xsens Technologies B.V., Enschede, the Netherlands). A general linear mixed modelling approach and regression-based statistics were employed to quantify differences between accurate and inaccurate goal kicks and the relationships between technical factors and accuracy. Accurate goal-kicks were characterised by a straighter approach line, with less kick-leg joint range of motion (knee and hip), lower linear velocity (centre of mass, foot speed), angular velocity (knee and shank), and less support-leg knee flexion during the kicking phase compared to inaccurate goal-kicks. At the end of the follow through, players produced greater ankle plantarflexion and a straighter-leg line in accurate goal-kicks. Findings in this research indicated that many factors interact with goal-kicking accuracy in AF, ranging from the players’ approach line path, their support-leg mechanics, the kick-leg swing motion, to the final position of the kicker during their follow through. Copyright: © 2020 Blair et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.","","Adolescent; Ankle; Ankle Joint; Athletic Performance; Australia; Biomechanical Phenomena; Foot; Football; Humans; Knee; Knee Joint; Leg; Lower Extremity; Male; Movement; Range of Motion, Articular; Soccer; ankle; article; biomechanics; controlled study; foot; football player; hip; human; kinematics; knee function; Netherlands; quantitative analysis; range of motion; velocity; adolescent; athletic performance; Australia; biomechanics; football; joint characteristics and functions; knee; leg; lower limb; male; movement (physiology); physiology; soccer","Anderson D, Breed R, Spittle M, Larkin P., Factors affecting set-shot goal-kicking performance in the Australian Football League, Perc and Motor Skills, 125, pp. 817-833, (2018); Robertson S, Back N, Bartlett JD., Explaining match outcome in elite Australian rules football using team performance indicators, J Sport Sci, 34, pp. 637-664, (2016); Baker J, Ball K., Biomechanical considerations of the drop punt, Technical report for the Australian Institute of Sport AFL Football Development Squad, (1996); Hosford G, Meikle D., The science of kicking, pp. 22-45, (2007); Ball K, McLaughlin P, Seagrave C, Marchant D., Biomechanical aspects of set shot accuracy in AFL football, J of Sci Med Sport, 5, (2002); Ball K., Biomechanical considerations of distance kicking in Australian Rules Football, Sport Biomech, 7, pp. 10-237, (2008); Ball K., Loading and performance of the support leg in kicking, J Sci Med Sport, 16, pp. 455-459, (2013); Peacock J, Ball K., The relationship between foot-ball impact flight characteristics in punt kicking, Sports Eng, 20, pp. 221-230, (2017); Blair S, Duthie G, Robertson S, Ball K., Biomechanics of goal-kicking accuracy in Australian Football using an inertial measurement system, 35th International Society on Biomechanics in Sports Conference, (2017); Dichiera A, Webster KE, Kuilboer L, Morris ME, Bach TM, Feller JA., Kinematic patterns associated with accuracy of the drop punt kick in Australian Football, J Sci Med Sport, 9, pp. 292-298, (2006); Peacock J, Ball K, Taylor S., The impact phase of drop punt kicking for maximal distance and accuracy, J Sport Sci, pp. 1-8, (2017); Bezodis N, Atack A, Willmott AP, Callard JEB, Trewartha G., Kicking foot swing planes and support leg kinematics in rugby place kicking: Differences between accurate and inaccurate kickers, Euro J Sport Sci, 15, pp. 1-10, (2018); Blair S, Duthie G, Robertson S, Hopkins W, Ball K., Concurrent validation of an inertial measurement system to quantify kicking biomechanics in four football codes, Journal of Biomechanics, 17, pp. 24-32, (2018); Roetenberg D, Luinge H, Slycke P., Xsens MVN: Full 6DOF human motion tracking using miniature inertial sensors (Technical paper), (2013); Numone H, Inoue K, Watanabe K, Iga T, Akima H., Dynamics of submaximal effort soccer instep kicking, J Sports Sci, 1, pp. 1-8, (2018); Lees A, Nolan L., Three-dimensional kinematic analysis of the instep kick under speed and accuracy conditions, Science and Football IV, pp. 16-21, (2002); Sinclair J, Taylor PJ, Smith A, Bullen J, Bentley I, Hobbs SJ., Three-dimensional kinematic differences between accurate and high velocity kicks in rugby union place kicking, International J Sports Sci Coaching, 12, pp. 371-380, (2017); Izovska J, Maly T, Zahalka F., Relationship between speed and accuracy of instep of soccer kick, J Phy Edu Sport, 16, pp. 459-464, (2016); Ball K, Blair S., Shot success and kinematic differences with altering kicking angle on goal-kicking technique in Australian football, 36th International Society on Biomechanics in Sports Conference, (2018); Knudson D, Bahamonde R., Effect of endpoint conditions on position and velocity near impact in tennis, J Sports Sci, 19, pp. 839-884, (2001); Blair S., Biomechanical considerations in goal-kicking accuracy: application of an inertial measurement system, (2019); Cohen J., Statistical power analysis for the behavioral sciences, (1988); Hayes GJ., Numerical approximation to functions and data, (1970); Jaeger BC, Edwards LJ, Das K, Sen PK., An R2 statistic for fixed effects in the generalised linear mixed model, J Appl Stat, 44, pp. 1086-1105, (2017); Tabachnick B G, Fidell LS., Using multivariate statistics, (2007); Alcock AM, Gilleard W, Hunter AB, Baker J, Brown N., Curve and instep kick kinematics in elite female footballers, J Sports Sci, 30, pp. 387-394, (2012); Holmes CE., Advanced modelling of ovoid balls, (2008); Asai T, Carre M, Akatsuka T, Haake S., The curve kick of a football, Sports Eng, 5, pp. 183-192, (2002); Gheidi N, Sadeghi H., Kinematic comparison of successful and unsuccessful instep kick in indoor soccer, Amer J of Appl Sci, 7, pp. 1334-1340, (2010); Fitts P. 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Blair; Institute for Health and Sport (IHES), Victoria University, Melbourne, Australia; email: Stephanie.blair@eis2win.co.uk","","Public Library of Science","19326203","","POLNC","33175905","English","PLoS ONE","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85096083114" "Wdowski M.M.; Gittoes M.J.R.","Wdowski, Maximilian M. (56008553700); Gittoes, Marianne J.R. (13205404600)","56008553700; 13205404600","First-stance phase force contributions to acceleration sprint performance in semi-professional soccer players","2020","European Journal of Sport Science","20","3","","366","374","8","5","10.1080/17461391.2019.1629178","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85068182236&doi=10.1080%2f17461391.2019.1629178&partnerID=40&md5=549a39572357ab9b57b97d4b31335d3a","Faculty of Health and Life Sciences, Coventry University, Coventry, United Kingdom; Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom","Wdowski M.M., Faculty of Health and Life Sciences, Coventry University, Coventry, United Kingdom; Gittoes M.J.R., Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom","Background: Sprint running is a key determinant of player performance in soccer that is typically assessed and monitored using temporal methods. Purpose: The aim of this study was to examine the relationship between ground reaction force kinetics at the first step and sprint running performance in soccer players in order to enhance the development of training and assessment methods. Methods: Nineteen semi-professional soccer players participated (mean ± s: age 21.1 ± 1.9 years, body mass 79.4 ± 7.3 kg and stature 1.79 ± 0.06 m). The participants completed 20 m acceleration sprint runs as timing gates recorded split times between 0–5, 5–10, 10–15, 15–20 and 0–20 m. A force plate captured vertical, anteroposterior and mediolateral ground reaction force data (1000 Hz) of the first right foot strike stance phase. Results: Ground reaction force metrics, including peak anteroposterior propulsive force (r = 0.66 to 0.751; P =.000 to.002), peak vertical ground reaction force (r = 0.456 to 0.464; P =.045 to.05), average medial-lateral/anteroposterior orientation angle (r = −0.463; P =.023), and average anteroposterior/vertical orientation angle (r = −0.44; P =.03) were correlated with one or all split times between 0–5 m, 5–10 m, 10–15 m, 15–20 m and 0–20 m. Conclusions: Acceleration sprint running in soccer requires minimised mediolateral and increased anteroposterior loading in the stance phase. Multi-component ground reaction force measures of the first step in acceleration sprint runs are important for developing performance assessments, and understanding force application techniques employed by soccer players. . © 2019, © 2019 European College of Sport Science.","biomechanics; field sport; Kinetics; running; training","Acceleration; Athletic Performance; Biomechanical Phenomena; Humans; Kinetics; Running; Soccer; Young Adult; acceleration; adult; article; biomechanics; body height; controlled study; foot; ground reaction force; human; running; soccer player; standing; young adult; athletic performance; biomechanics; kinetics; physiology; running; soccer","Andrzejewski M., Chmura J., Pluta B., Strzelczyk R., Kasprzak A., Analysis of sprinting activities of professional soccer players, Journal of Strength and Conditioning Research, 27, 8, pp. 2134-2140, (2013); Arellano C.J., Kram R., The effects of step width and arm swing on energetic cost and lateral balance during running, Journal of Biomechanics, 44, 7, pp. 1291-1295, (2011); Bezodis N.E., North J.S., Razavet J.L., Alterations to the orientation of the ground reaction force vector affect sprint acceleration performance in team sports athletes, Journal of Sports Sciences, 35, 18, pp. 1817-1824, (2017); Bezodis N.E., Salo A.I.T., Trewartha G., Choice of sprint start performance measure affects the performance-based ranking within a group of sprinters: Which is the most appropriate measure?, Sports Biomechanics, 9, 4, pp. 258-269, (2010); Buchheit M., Simpson B.M., Peltola E., Mendez-Villanueva A., Assessing maximal sprinting speed in highly trained young soccer players, International Journal of Sports Physiology and Performance, 7, 1, pp. 76-78, (2012); Colyer S.L., Nagahara R., Salo A.I.T., Kinetic demands of sprinting shift across the acceleration phase: Novel analysis of entire force waveforms, Scandinavian Journal of Medicine and Science in Sports, 28, pp. 1784-1792, (2018); Cometti G., Maffiuletti N.A., Pousson M., Chatard J.C., Maffulli N., Isokinetic strength and Anaerobic Power of Elite, Subelite and Amateur French soccer players, International Journal of Sports Medicine, 22, pp. 45-51, (2001); Di Salvo V., Baron R., Gonzalez-Haro C., Gormasz C., Pigozzi F., Bachl N., Sprinting analysis of elite soccer players during European Champions League and UEFA Cup matches, Journal of Sports Sciences, 28, 14, pp. 1489-1494, (2010); Di Salvo V., Gregson W., Atkinson G., Tordoff P., Drust B., Analysis of high intensity activity in Premier League soccer, International Journal of Sports Medicine, 30, pp. 205-212, (2009); Hunter J.P., Marshall R.N., McNair P.J., Relationships between ground reaction force impulse and kinematics of sprint-running acceleration, Journal of Applied Biomechanics, 21, pp. 31-43, (2005); Kawamori N., Nosaka K., Newton R.U., Relationships between ground reaction impulse and sprint acceleration performance in Team sport athletes, Journal of Strength and Conditioning Research, 27, pp. 568-573, (2013); Kugler F., Janshen L., Body position determines propulsive forces in accelerated running, Journal of Biomechanics, 43, 2, pp. 343-348, (2010); Lockie R.G., Murphy A.J., Schultz A.B., Jeffriess M.D., Callaghan S.J., Influence of sprint acceleration stance kinetics on velocity and step kinematics in field sport athletes, Journal of Strength and Conditioning Research, 27, pp. 2494-2503, (2013); McKenna M., Riches P.E., A comparison of sprinting kinematics on two types of treadmill and over-ground, Scandinavian Journal of Medicine & Science in Sports, 17, pp. 649-655, (2007); Mendez-Villanueva A., Buchheit M., Simpson B., Peltola E., Bourdon P., Does on-field sprinting performance in young soccer players depend on how fast they can run or how fast they do run?, Journal of Strength and Conditioning Research, 25, 9, pp. 2634-2638, (2011); Mero A., Komi P.V., Force-, EMG-, and elasticity-velocity relationships at submaximal, maximal and supramaximal running speeds in sprinters, European Journal of Applied Physiology and Occupational Physiology, 55, pp. 553-561, (1986); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, Journal of Sports Sciences, 21, pp. 519-528, (2003); Moir G., Sanders R., Button C., Glaister M., The effect of periodized resistance training on accelerative sprint performance, Sports Biomechanics, 6, 3, pp. 285-300, (2007); Morin J.B., Edouard P., Samozino P., Technical ability of force application as a determinant factor of sprint performance, Medicine & Science in Sports & Exercise, 43, pp. 1680-1688, (2011); Morin J.-B., Gimenez P., Edouard P., Arnal P., Jimenez-Reyes P., Samozino P., Mendiguchia J., Sprint acceleration mechanics: The Major Role of Hamstrings in Horizontal force production, Frontiers in Physiology, 6, (2015); Nagahara R., Mizutani M., Matsuo A., Kanehisa H., Fukunaga T., Association of sprint performance With ground reaction forces during acceleration and maximal Speed phases in a Single sprint, Journal of Applied Biomechanics, 34, 2, pp. 104-110, (2018); Nagahara R., Mizutani M., Matsuo A., Kanehisa H., Fukunaga T., Step-to-step spatiotemporal variables and ground reaction forces of intra-individual fastest sprinting in a single session, Journal of Sports Sciences, 36, 12, pp. 1392-1401, (2018); Nagahara R., Naito H., Morin J.B., Zushi K., Association of acceleration with spatiotemporal variables in maximal sprinting, International Journal of Sports Medicine, 35, 9, pp. 755-761, (2014); Rabita G., Dorel S., Slawinski J., De Villarreal E.S., Couturier A., Samozino P., Morin J.B., Sprint mechanics in world-class athletes: A new insight into the limits of human locomotion, Scandinavian Journal of Medicine and Science in Sports, 25, pp. 583-594, (2015); Scanlan A., Humphries B., Tucker P.S., Dalbo V., The influence of physical and cognitive factors on reactive agility performance in men basketball players, Journal of Sports Sciences, 32, 4, pp. 367-374, (2013); Standing R.J., Maulder P.S., The biomechanics of standing start and initial acceleration: Reliability of the key determining kinematics, Journal of Sports Science and Medicine, 16, 1, pp. 154-162, (2017); Yu J., Sun Y., Yang C., Wang D., Yin K., Herzog W., Liu Y., Biomechanical insights into differences between the mid-acceleration and maximum velocity phases of sprinting, Journal of Strength and Conditioning Research, 30, 7, pp. 1906-1916, (2016)","M.M. Wdowski; Faculty and Health and Life Sciences, Coventry University, Coventry, Level 2, Science and Health Building, CV1 5FB, United Kingdom; email: ac6071@coventry.ac.uk","","Taylor and Francis Ltd.","17461391","","","31167614","English","Eur. J. Sport Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85068182236" "Cerrah A.O.; Şimsek D.; Soylu A.R.; Nunome H.; Ertan H.","Cerrah, Ali Onur (48361040700); Şimsek, Deniz (57188819479); Soylu, Abdullah Ruhi (35512827500); Nunome, Hiroyuki (6507093692); Ertan, Hayri (57207562311)","48361040700; 57188819479; 35512827500; 6507093692; 57207562311","Developmental differences of kinematic and muscular activation patterns in instep soccer kick","2024","Sports Biomechanics","23","1","","28","43","15","3","10.1080/14763141.2020.1815827","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091025928&doi=10.1080%2f14763141.2020.1815827&partnerID=40&md5=e205c983696517e85ebdd9f819688ca1","Faculty of Sport Sciences, Department of Coaching Education, Eskişehir Technical University, Eskisehir, Turkey; Faculty of Sport Sciences, Department of Physical Education and Sport Teaching, Eskişehir Technical University, Eskisehir, Turkey; Faculty of Medicine, Biophysics Department, Hacettepe University, Ankara, Turkey; Faculty of Sports & Health Science, Fukuoka University, Fukuoka, Japan","Cerrah A.O., Faculty of Sport Sciences, Department of Coaching Education, Eskişehir Technical University, Eskisehir, Turkey; Şimsek D., Faculty of Sport Sciences, Department of Physical Education and Sport Teaching, Eskişehir Technical University, Eskisehir, Turkey; Soylu A.R., Faculty of Medicine, Biophysics Department, Hacettepe University, Ankara, Turkey; Nunome H., Faculty of Sports & Health Science, Fukuoka University, Fukuoka, Japan; Ertan H., Faculty of Sport Sciences, Department of Coaching Education, Eskişehir Technical University, Eskisehir, Turkey","Kinematic and neuromuscular activity differences amongst soccer players in different age groups were examined in this study. Thirty male soccer players evenly divided into three age groups (Group 1: age 12–13; Group 2: age 14–15; Group 3: age 16–17) were asked to perform instep kicks towards a target 11 m away. Their anthropometrics, instep kick kinematics, resultant ball velocities, both legs isokinetic strength, and electromyography (EMG) during kicking were compared amongst the three age groups. There were significant differences in height, body mass, body mass index, ball velocities, and isokinetic strength values amongst three age groups. Also, kicking kinematics including angular and linear velocities of hip, knee, ankle, and toe were significantly different (p < 0.05) amongst groups in several kicking phases. Furthermore, the activities of m. rectus femoris, m. vastus medialis, m. biceps femoris were significantly different amongst groups (p < 0.05). The ball velocities and leg strength parameters increased with age, neuromuscular activations, and kinematic parameters differed especially in leg-coking and forward swing phase of instep soccer kick. It should be concluded that an increase of resultant ball velocity of the instep kick is closely associated with chronical age, the development of leg muscle strength, and the neuromuscular activity of the kicking leg. © 2020 Informa UK Limited, trading as Taylor & Francis Group.","biomechanics; electromyography; instep kick; kinematics; Soccer","Adolescent; Biomechanical Phenomena; Child; Foot; Humans; Leg; Lower Extremity; Male; Soccer; adult; ankle; anthropometry; article; biceps femoris muscle; biomechanics; body mass; controlled study; electromyography; groups by age; hip; human; kinematics; knee; male; muscle contraction; muscle strength; neuromuscular function; rectus femoris muscle; soccer player; toe; vastus medialis muscle; adolescent; biomechanics; child; foot; leg; lower limb; physiology; soccer","Abdel-Aziz Y.I., Karara H.M., Direct linear transformation from comparator coordinates into object space coordinates, American society of photogrammetry symposium on close-range photogrammetry, pp. 1-18, (1971); Amiri-Khorasani M., Abu Osman N.A., Yusof A., Biomechanical responses of instep kick between different positions in professional soccer players, Journal of Human Kinetics, 22, pp. 21-28, (2009); Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, Journal of Sports Sciences, 24, pp. 951-960, (2006); Asai T., Carre M., Akatsuka T., Haake S., The curve kick of a football I: Impact with the foot, Sports Engineering, 5, pp. 183-192, (2002); Ball N.B., Scurr J.C., Electromyography normalization methods for high-velocity muscle actions: Review and recommendations, Journal of Applied Biomechanics, 29, pp. 600-800, (2013); Barfield B., The biomechanics of kicking in soccer, Clinical Journal of Sport Medicine, 17, pp. 711-728, (1998); Bing C.Y., Parasuraman S., Ahmed Khan M.K.A., Electromyography (EMG) and human locomotion, Procedia Engineering, 41, pp. 486-492, (2012); Bollens E., De Proft E., Clarys J., The accuracy and muscle monitoring in soccer kicking, Biomechanics X-A, pp. 283-288, (1987); Brophy R.H., Backus S.I., Pansy B.S., Lyman S., Williams R.J., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, The Journal Of Orthopaedic and Sports Physical Therapy, 37, pp. 260-268, (2007); Brophy R.H., Backus S., Kraszewski A.P., Steele B.C., Ma Y., Osei D., Williams R.J., Differences between sexes in lower extremity alignment and muscle activation during soccer kick, 92, pp. 2050-2058, (2010); Bull-Andersen T., Dorge H., Thomsen F., Collisions in soccer kicking, Sports Engineering, 2, pp. 121-125, (1999); Burden A., How should we normalize electromyograms obtained from healthy participants? What we have learned from over 25 years of research, Journal of Electromyography and Kinesiology, 20, pp. 1023-1035, (2010); Capranica L., Cama G., Fanton F., Tessitore A., Figura F., Force and power of preferred and non-preferred leg in young soccer players, The Journal of Sports Medicine and Physical Fitness, 32, pp. 358-363, (1992); Cerrah A.O., Onarici Gungor E., Soylu A.R., Ertan H., Lees A., Bayrak C., Muscular activation patterns during the Soccer In-Step Kick, Isokinetic and Exercise Science, 19, pp. 181-190, (2011); Cerrah A.O., Soylu A.R., Ertan H., Lees A., The effect of kick type on the relationship between kicking leg muscle activation and ball velocity, Montenegrin Journal of Sports Science and Medicine, 7, pp. 39-44, (2018); Charnock B.L., Lewis C.L., Garrett W.E., Queen R.M., Adductor longus mechanics during the maximal effort soccer kick, Sports Biomechanics, 8, pp. 223-234, (2009); Clarys J.P., Dufour W., Pynaert M., Electromyography of three soccer kick movements, Geneeskunde En Sport, 17, pp. 17-21, (1984); De Luca C.J., Gilmore L.D., Kuznetsov M., Roy S.H., Filtering the surface EMG signal: Movement artifact and baseline noise contamination, Journal of Biomechanics, 43, pp. 1573-1579, (2010); De Proft E., Clarys J., Bollens E., Cabri J., Dufour W., Muscle activity in the soccer kick, Science and football, pp. 434-440, (1988); Degache F., Richard R., Edouard P., Oullion R., Calmels P., The relationship between muscle strength and physiological age: A cross-sectional study in boys aged from 11 to 15, Annals of Physical and Rehabilitation Medicine, 53, pp. 180-188, (2010); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Aagaard H., Dyhre- Poulsen P., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scandinavian Journal of Medicine & Science in Sports, 9, pp. 195-200, (1999); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, pp. 293-299, (2002); Forbes H., Bullers A., Lovell A., Mc Naughton L.R., Polman R.C., Siegler J.C., Relative torque profiles of elite male youth soccer: Effects of age and pubertal development, International Journal of Sports Medicine, 30, pp. 592-597, (2009); Hermens H., Freriks J., Disselhorst-Klug C., Rau R., Development of recommendations for SEMG sensors and sensor placement procedures, Journal of Electromyography and Kinesiology, 10, pp. 361-374, (2000); Huang T., Roberts E., Youm Y., Biomechanics of kicking, Human body dynamics: Impact, occupational, and athletic aspects, pp. 407-443, (1982); Katis A., Kellis E., Three-dimensional kinematics and ground reaction forces during the instep and outstep soccer kicks in pubertal players, Journal of Sports Sciences, 28, pp. 1233-1241, (2010); Katis A., Kellis E., Is soccer kick performance better after a “faking” (cutting) maneuver task?, Sport Biomechanics, 10, pp. 35-45, (2011); Katis A., Giannadakis E., Kannas T., Amiridis I., Kellis E., Lees A., Mechanisms that influence accuracy of the soccer kick, Journal of Electromyography and Kinesiology, 23, pp. 125-131, (2013); Kellis E., Baltzopoulos V., Muscle activation differences between eccentric and concentric isokinetic exercise, Medicine and Science in Sports and Exercise, 30, pp. 16-23, (1988); Kellis E., Gerodimos V., Kellis S., Manou V., Bilateral isokinetic concentric and eccentric strength profiles of the knee extensors and flexors in young soccer players, Isokinetic and Exercise Science, 9, pp. 31-38, (2001); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Medicine and Science in Sports and Exercise, 36, pp. 1017-1028, (2004); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Science & Medicine, 6, pp. 154-165, (2007); Kellis E., Katis A., The relationship between isokinetic knee extension and flexion strength with soccer kick kinematics: An electromyographic evaluation, Journal of Sports Medicine and Physical Fitness, 47, pp. 385-394, (2007); Konrad P., The ABC of EMG, (2005); Lees A., Nolan K., Three-Dimensional kinematic analysis of the instep kick under speed and accuracy conditions, Science and football lV, pp. 16-21, (1998); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, pp. 211-234, (2002); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 309, pp. 917-927, (1998); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and football, pp. 441-448, (1988); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine & Science in Sports & Exercise, 34, pp. 2028-2036, (2002); Orchard J., Walt S., McIntosh A., Garlick D., Muscle activity during the drop punt kick, Journal of Sports Sciences, 17, pp. 837-838, (1999); Ozaki H., Aoki K., Kinematic and electromyographic analysis of infront curve soccer kick, Football Science, 5, pp. 26-36, (2008); Pearson D.T., Naughton G.A., Torode M., Predictability of physiological testing and the role of maturation in talent identification for adolescent team sports, Journal of Science and Medicine in Sport, 9, pp. 277-287, (2006); Rodano R., Tavana R., Three dimensional analysis of the instep kick in professional soccer players, Science and football II, pp. 357-363, (1993); Rodriguez-Lorenzo L., Fernandez-del-Olmo M., Martin-Acero R., pp. 719-728, (2019); Scurr J.C., Abbott V., Ball N., Quadriceps EMG muscle activation during accurate soccer instep kicking, Journal of Sports Sciences, 29, pp. 247-251, (2011); Shan G., Westerhoff W., Full-body kinematic characteristics of the maximal instep kick by male soccer players and parameters related to kick quality, Sports Biomechanics, 4, pp. 59-72, (2005); Soylu A.R., Arpinar-Avsar P., Detection of surface electromyography recording time interval without muscle fatigue effect for biceps brachii muscle during maximum voluntary contraction, Journal of Electromyography and Kinesiology, 20, pp. 773-776, (2010); Sterzing T., Hennig E.M., The influence of soccer shoes on kicking velocity in full-instep kicks, Exercise and Sport Sciences Reviews, 36, pp. 91-97, (2008); Van den Tillaar R., Ulvik A., Influence of instruction on velocity and accuracy in soccer kicking of experienced soccer players, Journal of Motor Behavior, 46, pp. 287-291, (2014); Vieira L.H.P., Cunha S.A., Moraes R., Barbieri F.A., Aquino R., Oliveria L.P., Navarro M., Bedo B.L.S., Paulo R.P.S., Kicking performance in young U9 to U20 soccer players: Assessment of velocity and accuracy simultaneously, Research Quarterly for Exercise and Sport, 89, (2018); Watanabe K., Nunome H., Inoue K., Iga T., Akima H., Electromyographic analysis of hip adductor muscles in soccer instep and side-foot kicking, Sports Biomechanics, 1, (2018)","A.O. Cerrah; Faculty of Sport Sciences, Department of Coaching Education, Eskişehir Technical University, Eskisehir, Turkey; email: aocerrah@eskisehir.edu.tr","","Routledge","14763141","","","32930059","English","Sports Biomech.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-85091025928" "Waring K.M.; Smith E.R.; Austin G.P.; Bowman T.G.","Waring, Katelyn M. (57919484400); Smith, Edward R. (57920528700); Austin, Gary P. (7102681083); Bowman, Thomas G. (16444284500)","57919484400; 57920528700; 7102681083; 16444284500","Exploring the Effects of a Neck Strengthening Program on Purposeful Soccer Heading Biomechanics and Neurocognition","2022","International Journal of Sports Physical Therapy","17","6","","1043","1052","9","3","10.26603/001c.38327","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85139510932&doi=10.26603%2f001c.38327&partnerID=40&md5=07ea305f933a20076e43a90a989c7a3b","1501 Lakeside Drive, Lynchburg, 24501, VA, United States","Waring K.M., 1501 Lakeside Drive, Lynchburg, 24501, VA, United States; Smith E.R., 1501 Lakeside Drive, Lynchburg, 24501, VA, United States; Austin G.P., 1501 Lakeside Drive, Lynchburg, 24501, VA, United States; Bowman T.G., 1501 Lakeside Drive, Lynchburg, 24501, VA, United States","Background Cervical (neck) strengthening has been proposed as an important factor in concussion prevention. The purpose of the study was to determine if a six-week cervical strengthening program affected neurocognition and purposeful soccer heading biomechanics. The hypothesis was that the neck strengthening program would improve strength, maintain neurocognition, and alter purposeful soccer heading biomechanics. Study Design Randomized controlled trial. Methods Twenty collegiate soccer athletes (8 males, 12 females, age=20.15±1.35 years, height=171.67±9.01 cm, mass=70.56±11.03 kg) volunteered to participate. Time (pre, post) and group (experimental, control) served as the independent variables. Four composite scores from the CNS Vital Signs computer based neurocognitive test (CNSVS; verbal memory, visual memory, executive function, reaction time) and aspects of heading biomechanics from inertial measurement units (xPatch; peak linear acceleration, peak rotational acceleration, duration, Gadd Severity Index [GSI]) served as the dependent variables. Each athlete completed a baseline measure of neck strength (anterior neck flexors, bilateral anterolateral neck flexors, bilateral cervical rotators) and CNSVS after heading 10 soccer balls at two speeds (11.18 and 17.88 m/s) while wearing the xPatch. The experimental group completed specific cervical neck strengthening exercises twice a week for six weeks using a Shingo Imara™ cervical neck resistance apparatus while the control group did not. After six weeks, the participants completed the same heading protocol followed by measurement of the same outcome variables. The alpha value was set to p<0.05 a priori. Results The interaction between time and group was significant for visual memory (F1,17=5.16, p=0.04, η2=0.23). Interestingly, post hoc results revealed visual memory decreased for the control group from pretest (46.90±4.46) compared to posttest (43.00±4.03; mean difference=3.90, 95% CI=0.77-7.03, p=0.02). Interactions for all other dependent variables were not statistically significant (p>0.05). Conclusions The cervical neck strengthening protocol allowed maintenance of visual memory scores but did not alter other neurocognitive measures or heading biomechanics. The link between cervical neck strengthening and concussion predisposition should continue to be explored. Level of Evidence Level 1b. © 2022, North American Sports Medicine Institute. All rights reserved.","cervical strength; CNS vital signs; concussion prevention","","Bretzin AC, Mansell JL, Tierney RT, McDevitt JK., Sex differences in anthropometrics and heading kinematics among division i soccer athletes: a pilot study, Sports Health, 9, 2, pp. 168-173, (2017); Baugh CM, Meehan WP, Kroshus E, McGuire TG, Hatfield LA., College football players less likely to report concussions and other injuries with increased injury accumulation, J Neurotrauma, 36, 13, pp. 2065-2072, (2019); Chrisman SP, Quitiquit C, Rivara FP., Qualitative study of barriers to concussive symptom reporting in high school athletics, J Adolesc Health, 52, 3, pp. 330-335, (2013); McCrea M, Hammeke T, Olsen G, Leo P, Guskiewicz K., Unreported concussion in high school football players: implications for prevention, Clin J Sport Med, 14, 1, pp. 13-17, (2004); Register-Mihalik JK, Guskiewicz KM, McLeod TCV, Linnan LA, Mueller FO, Marshall SW., Knowledge, attitude, and concussion-reporting behaviors among high school athletes: a preliminary study, J Athl Train, 48, 5, pp. 645-653, (2013); Rivara FP, Schiff MA, Chrisman SP, Chung SK, Ellenbogen RG, Herring SA., The effect of coach education on reporting of concussions among high school athletes after passage of a concussion law, Am J Sports Med, 42, 5, pp. 1197-1203, (2014); Koerte IK, Ertl-Wagner B, Reiser M, Zafonte R, Shenton ME., White matter integrity in the brains of professional soccer players without a symptomatic concussion, JAMA, 308, 18, (2012); Koerte IK, Lin AP, Muehlmann M, Et al., Altered neurochemistry in former professional soccer players without a history of concussion, J Neurotrauma, 32, 17, pp. 1287-1293, (2015); Koerte IK, Mayinger M, Muehlmann M, Et al., Cortical thinning in former professional soccer players, Brain Imaging Behav, 10, 3, pp. 792-798, (2016); Lipton ML, Kim N, Zimmerman ME, Et al., Soccer heading is associated with white matter microstructural and cognitive abnormalities, Radiology, 268, 3, pp. 850-857, (2013); Matser EJT., Neuropsychological impairment in amateur soccer players, JAMA, 282, 10, (1999); Svaldi DO, McCuen EC, Joshi C, Et al., Cerebrovascular reactivity changes in asymptomatic female athletes attributable to high school soccer participation, Brain Imaging Behav, 11, 1, pp. 98-112, (2017); Zhang MR, Red SD, Lin AH, Patel SS, Sereno AB., Evidence of cognitive dysfunction after soccer playing with ball heading using a novel tablet-based approach, PLOS ONE, 8, 2, (2013); Spiotta AM, Bartsch AJ, Benzel EC., Heading in soccer: dangerous play?, Neurosurgery, 70, 1, pp. 1-11, (2012); Levitch CF, Zimmerman ME, Lubin N, Et al., Recent and long-term soccer heading exposure is differentially associated with neuropsychological function in amateur players, J Int Neuropsychol Soc, 24, 2, pp. 147-155, (2018); Caccese J, Kaminski TW., Neurocognitive changes in men’s and women’s soccer players across a collegiate career, International Research in Science and Soccer II, (2015); Kaminski TW, Cousino ES, Glutting JJ., Examining the relationship between purposeful heading in soccer and computerized neuropsychological test performance, Res Q Exerc Sport, 79, 2, pp. 235-244, (2008); Kaminski TW, Wikstrom AM, Gutierrez GM, Glutting JJ., Purposeful heading during a season does not influence cognitive function or balance in female soccer players, J Clin Exp Neuropsychol, 29, 7, pp. 742-751, (2007); Rowson S, Duma SM., Brain injury prediction: assessing the combined probability of concussion using linear and rotational head acceleration, Ann Biomed Eng, 41, 5, pp. 873-882, (2013); Collins CL, Fletcher EN, Fields SK, Et al., Neck strength: a protective factor reducing risk for concussion in high school sports, J Prim Prev, 35, 5, pp. 309-319, (2014); Eckner JT, Oh YK, Joshi MS, Richardson JK, Ashton-Miller JA., Effect of neck muscle strength and anticipatory cervical muscle activation on the kinematic response of the head to impulsive loads, Am J Sports Med, 42, 3, pp. 566-576, (2014); Streifer M, Brown AM, Porfido T, Anderson EZ, Buckman JF, Esopenko C., The potential role of the cervical spine in sports-related concussion: clinical perspectives and considerations for risk reduction, J Orthop Sports Phys Ther, 49, 3, pp. 202-208, (2019); Tierney RT, Sitler MR, Swanik CB, Swanik KA, Higgins M, Torg J., Gender differences in head-neck segment dynamic stabilization during head acceleration, Med Sci Sports Exerc, 37, 2, pp. 272-279, (2005); Plagenhoef S, Evans FG, Abdelnour T., Anatomical data for analyzing human motion, Res Q Exerc Sport, 54, 2, pp. 169-178, (1983); Kendall F, McCreary E, Provance P., Muscles, Testing and Function, (1993); Kubas C, Chen YW, Echeverri S, Et al., Reliability and validity of cervical range of motion and muscle strength testing, J Strength Cond Res, 31, 4, pp. 1087-1096, (2017); Gadd CW., Use of a Weighted-Impulse Criterion for Estimating Injury Hazard, SAE International, (1966); Wu LC, Nangia V, Bui K, Et al., In vivo evaluation of wearable head impact sensors, Ann Biomed Eng, 44, 4, pp. 1234-1245, (2016); Cummiskey B, Schiffmiller D, Talavage TM, Et al., Reliability and accuracy of helmet-mounted and head-mounted devices used to measure head accelerations, Proc Inst Mech Eng Part P J Sports Eng Technol, 231, 2, pp. 144-153, (2017); Gualtieri CT, Johnson LG., Reliability and validity of a computerized neurocognitive test battery, CNS Vital Signs, Arch Clin Neuropsychol, 21, 7, pp. 623-643, (2006); Littleton AC, Register-Mihalik JK, Guskiewicz KM., Test-retest reliability of a computerized concussion test: cns vital signs, Sports Health, 7, 5, pp. 443-447, (2015); Lakens D., Calculating and reporting effect sizes to facilitate cumulative science: a practical primer for t-tests and ANOVAs, Front Psychol, 4, (2013); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (1988); Mihalik JP, Guskiewicz KM, Marshall SW, Greenwald RM, Blackburn JT, Cantu RC., Does cervical muscle strength in youth ice hockey players affect head impact biomechanics?, Clin J Sport Med, 21, 5, pp. 416-421, (2011); Lamond LC, Caccese JB, Buckley TA, Glutting J, Kaminski TW., Linear acceleration in direct head contact across impact type, player position, and playing scenario in collegiate women’s soccer players, J Athl Train, 53, 2, pp. 115-121, (2018); Ashton J, Coyles G, Malone JJ, Roberts JW., Immediate effects of an acute bout of repeated soccer heading on cognitive performance, Sci Med Footb, pp. 1-7, (2020); McCrory P, Meeuwisse W, Dvorak J, Et al., Consensus statement on concussion in sport—the 5 th international conference on concussion in sport held in Berlin, October 2016, Br J Sports Med","T.G. Bowman; Lynchburg, 1501 Lakeside Drive, 24501, United States; email: Bowman.t@lynchburg.edu","","North American Sports Medicine Institute","21592896","","","","English","Int. J. Sport. Phys. Ther.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85139510932" "Dewitz H.; Yildirim B.; Klein P.","Dewitz, H. (56563137200); Yildirim, B. (57201670382); Klein, P. (57209850712)","56563137200; 57201670382; 57209850712","Biomechanical screening for injury prevention: The importance of 3D-motion analysis in high performance sports; [Biomechanisches Screening zur Verletzungsprävention: Die Bedeutung der 3D-Bewegungsanalyse im Hochleistungssport]","2018","Unfallchirurg","121","6","","455","462","7","4","10.1007/s00113-018-0498-3","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85045656714&doi=10.1007%2fs00113-018-0498-3&partnerID=40&md5=f29f85aa743315e36ae9bf7062c3890f","Institut für Funktionelle Diagnostik (IFD Cologne), Im MediaPark 2, Köln, 50670, Germany","Dewitz H., Institut für Funktionelle Diagnostik (IFD Cologne), Im MediaPark 2, Köln, 50670, Germany; Yildirim B., Institut für Funktionelle Diagnostik (IFD Cologne), Im MediaPark 2, Köln, 50670, Germany; Klein P., Institut für Funktionelle Diagnostik (IFD Cologne), Im MediaPark 2, Köln, 50670, Germany","Standardized clinical diagnostic procedures cannot assess the functionality of the anatomical structures in sport-specific movement. Biomechanical screening is able to detect deficits but is not sufficiently and objectively precise with the current clinical examination tools including conventional imaging techniques. The fields of use of functional testing methods are versatile and range from injury prevention analysis, screening during rehabilitation phases up to the return-to-play decision. Using simple musculoskeletal function analysis it is difficult to assess the risk of injuries. The main advantage of instrumented 3D-motion analysis is its potential to generate objective, reliable and reproducible data with exact joint angles, muscle activity, as well as loading inside the joints during movement. These marker-based motion analysis procedures are more time-consuming and more cost intensive and necessitate in particular biomechanical and medical knowledge to assess the analytical data in terms of clinical relevance. In the absence of scientific studies on biomechanical analyses in professional sports, this study shows preliminary approaches to this topic. © 2018, Springer Medizin Verlag GmbH, ein Teil von Springer Nature.","Movement screening; Prevention; Professional soccer; Return to sport; Sports injury","Athletic Injuries; Biomechanical Phenomena; Humans; Knee Injuries; Movement; Sports; biomechanics; human; knee injury; movement (physiology); sport; sport injury","Arliani G.G., Lara P.H.S., Astur D.C., Et al., Orthopaedics injuries in male professional football players in Brazil, Muscles Ligaments Tendons J, 7, 3, pp. 524-531, (2017); Beese M.E., Joy E., Switzler C.L., Et al., Landing error scoring system differences between single-sport and multi-sport female high school-aged athletes, J Athl Train, 50, 8, pp. 806-811, (2015); Bird S.P., Markwick W.J., Musculoskeletal screening and functional testing: considerations for basketball athletes, Int J Sports Phys Ther, 11, 5, pp. 784-802, (2016); Bonazza N.A., Smuin D., Onks C.A., Et al., Reliability, validity, and injury predictive value of the functional movement screen: a systematic review and meta-analysis, Am J Sports Med, 45, 3, pp. 725-732, (2017); Bond C.W., Dorman J.C., Odney T.O., Et al., Evaluation of the functional movement screen and a novel basketball mobility test as an injury prediction tool for collegiate basketball players, J Strength Cond Res, (2017); Chaouachi A., Chtara M., Hammami R., Chtara H., Turki O., Castagna C., Multidirectional sprints and small-sided games training effect on agility and change of direction abilities in youth soccer, J Strength Cond Res, 28, 11, pp. 3121-3127, (2014); Chimera N.J., Warren M., Use of clinical movement screening tests to predict injury in sport, World J Orthop, 7, 4, pp. 202-217, (2016); Cook G., Burton L., Hoogenboom B.J., Et al., Functional movement screening: the use of fundamental movements as an assessment of function - part 1, Int J Sports Phys Ther, 9, 3, pp. 396-409, (2014); Dallinga J.M., Benjaminse A., Lemmink K.A.P.M., Which screening tools can predict injury to the lower extremities in team sports? A systematic review, Sports Med, 42, 9, pp. 791-815, (2012); Doyscher R., Kraus K., Hinterwimmer S., Et al., Evidenz-basierte Return-to-Sport-Testung nach Gelenkeingriffen, Arthroskopie, 29, 1, pp. 38-44, (2016); van Dyk N., Bahr R., Burnett A.F., Et al., A comprehensive strength testing protocol offers no clinical value in predicting risk of hamstring injury, Br J Sports Med, 51, 23, pp. 1695-1702, (2017); Ekstrand J., Hagglund M., Walden M., Epidemiology of muscle injuries in professional football (soccer), Am J Sports Med, 39, 6, pp. 1226-1232, (2011); Ekstrand J., Healy J.C., Walden M., Et al., Hamstring muscle injuries in professional football, Br J Sports Med, 46, 2, pp. 112-117, (2012); Ekstrand J., Walden M., Hagglund M., Hamstring injuries have increased by 4 % annually in men’s professional football, since 2001: a 13-year longitudinal analysis of the UEFA Elite Club injury study, Br J Sports Med, 50, pp. 731-737, (2016); Ford K.R., Myer G.D., Hewett T.E., Reliability of landing 3D motion analysis, Med Sci Sports Exerc, 39, 11, pp. 2021-2028, (2007); Gribble P.A., Hertel J., Plisky P., Using the star excursion balance test to assess dynamic postural-control deficits and outcomes in lower extremity injury: a literature and systematic review, J Athl Train, 47, 3, pp. 339-357, (2012); Hallen A., Ekstrand J., Return to play following muscle injuries in professional footballers, J Sports Sci, 32, 13, pp. 1229-1236, (2014); Junge A., Dvorak J., Football injuries during the 2014 FIFA World Cup, Br J Sports Med, 49, 9, pp. 599-602, (2015); Klopfer-Kramer I., Augat P., Instrumentelle Ganganalyse, Trauma Berufskr, 17, S1, pp. 10-14, (2015); Luckerath C., Rehnitz C., Muskelverletzungen des Sportlers: Stellenwert der MRT-Bildgebung, Radiologe, 57, 12, pp. 1012-1018, (2017); McCall A., Carling C., Nedelec M., Et al., Risk factors, testing and preventative strategies for non-contact injuries in professional football: current perceptions and practices of 44 teams from various premier leagues, Br J Sports Med, 48, 18, pp. 1352-1357, (2014); Meldrum D., Shouldice C., Conroy R., Et al., Test-retest reliability of three dimensional gait analysis, Gait Posture, 39, 1, pp. 265-271, (2014); Moran R.W., Schneiders A.G., Mason J., Et al., Do Functional Movement Screen (FMS) composite scores predict subsequent injury? A systematic review with meta-analysis, Br J Sports Med, 51, 23, pp. 1661-1669, (2017); Noyes F.R., Barber-Westin S.D., Fleckenstein C., Et al., The drop-jump screening test: difference in lower limb control by gender and effect of neuromuscular training in female athletes, Am J Sports Med, 33, 2, pp. 197-207, (2005); Paul D.J., Nassis G.P., Testing strength and power in soccer players: the application of conventional and traditional methods of assessment, J Strength Cond Res, 29, 6, pp. 1748-1758, (2017); Riepenhof H., McAleer S., Bloch H., Et al., Kreuzbandruptur: Von der Reha in den Wettkampf, Trauma Berufskr, 18, S5, pp. 511-514, (2016); Stubbe J.H., van Beijsterveldt A.-M.M.C., van der Knaap S., Et al., Injuries in professional male soccer players in the Netherlands, J Athl Train, 50, 2, pp. 211-216, (2015); Warren M., Smith C.A., Chimera N.J., Association of the Functional Movement Screen with injuries in division I athletes, J Sport Rehabil, 24, 2, pp. 163-170, (2015); Whatman C., Hume P., Hing W., Kinematics during lower extremity functional screening tests in young athletes – are they reliable and valid?, Phys Ther Sport, 14, 2, pp. 87-93, (2013); Wong P., Hong Y., Soccer injury in the lower extremities, Br J Sports Med, 39, 8, pp. 473-482, (2005); Wong S., Ning A., Lee C., Et al., Return to sport after muscle injury, Curr Rev Musculoskelet Med, 8, 2, pp. 168-175, (2015)","H. Dewitz; Institut für Funktionelle Diagnostik (IFD Cologne), Köln, Im MediaPark 2, 50670, Germany; email: dewitz@ifd-cologne.com","","Springer Verlag","01775537","","UNFAE","29671010","German","Unfallchirurg","Note","Final","","Scopus","2-s2.0-85045656714" "Ponce E.; Ponce D.; Andresen M.","Ponce, Ernesto (23397848600); Ponce, Daniel (23398127100); Andresen, Max (57226228584)","23397848600; 23398127100; 57226228584","Modeling heading in adult soccer players","2014","IEEE Computer Graphics and Applications","34","5","6898691","8","13","5","4","10.1109/MCG.2014.96","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84907451723&doi=10.1109%2fMCG.2014.96&partnerID=40&md5=c70780da0b20d448a716ed24f82afeae","Universidad de Tarapacá, Chile; Universidade Federal de Santa Catarina, Brazil; Pontificia Universidad Católica de Chile, Chile","Ponce E., Universidad de Tarapacá, Chile; Ponce D., Universidade Federal de Santa Catarina, Brazil; Andresen M., Pontificia Universidad Católica de Chile, Chile","Heading soccer balls can generate mild brain injuries and in the long run can lead to difficulty in solving problems, memory deficits, and language difficulties. Researchers evaluated the effects on the head for both correct and incorrect heading techniques. They based the head's geometry on medical images. They determined the injury's magnitude by comparing the neurological tissue's resistance with predictions of the generated stresses. The evaluation examined fast playing conditions in adult soccer, taking into account the ball's speed and the type of impact. Mathematical simulations using the finite element method indicated that correctly heading balls arriving at moderate speed presents a low risk of brain injury. However, damage can happen around the third cervical vertebra. These results coincide with medical studies. Incorrect heading greatly increases the brain injury risk and can alter the parietal area. © 1981-2012 IEEE.","Brain injury; Computational neuroscience; Computer graphics; Finite element method; Graphics; Heading the soccer ball; Medical simulations; Modeling","Adult; Biomechanical Phenomena; Brain; Cervical Vertebrae; Finite Element Analysis; Head; Head Injuries, Closed; Humans; Models, Biological; Skull; Soccer; Finite element method; Models; Brain injury; Computational neuroscience; Graphics; Medical simulations; Soccer balls; adult; biological model; biomechanics; brain; cervical spine; finite element analysis; head; head injury; human; pathophysiology; physiology; skull; soccer; Computer graphics","Bowden B., Kirkendall D., Garret W., Concussion incidence in elite college soccer players, Am. J. Sports Medicine, 26, pp. 238-241, (1998); Shewchenko N., Et al., Heading in football. Part 1: Development of biomechanics methods to investigate head response, British J. Sports Medicine, 39, pp. i10-i25, (2005); Kunz M., 265 million playing football, FIFA Magazine, pp. 10-15, (2007); Meyer F., Roth S., Willinger R., Three years old child head-neck finite element modeling: Simulation of the interaction with airbag in frontal and side impact, Int'l J. Vehicle Safety, 4, 4, pp. 285-299, (2010); Belingardi G., Chiandussi G., Gaviglio I., Development and validation of a new finite element model of human head, Proc. 19th Int'l Tech. Conf. Enhanced Safety of Vehicles (ESV 05), (2005); Mehnert M.J., Agesen T., Malanga G.A., Heading' and neck injuries in soccer: A review of biomechanics and potential long-term effects, Pain Physician, 8, 4, pp. 391-397, (2005); Sortland O., Tysvaer A.T., Storli O.V., Changes in the cervical spine in association football players, British J. Sports Medicine, 16, 2, pp. 80-84, (1982)","","","IEEE Computer Society","02721716","","ICGAD","25248195","English","IEEE Comput Graphics Appl","Article","Final","","Scopus","2-s2.0-84907451723" "Uthoff A.; Zois J.; Van Den Tillaar R.; Nagahara R.","Uthoff, Aaron (57201496330); Zois, James (25223974100); Van Den Tillaar, Roland (6602938090); Nagahara, Ryu (56047877300)","57201496330; 25223974100; 6602938090; 56047877300","Acceleration mechanics during forward and backward running: A comparison of step kinematics and kinetics over the first 20 m","2021","Journal of Sports Sciences","39","16","","1816","1821","5","3","10.1080/02640414.2021.1898193","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102705672&doi=10.1080%2f02640414.2021.1898193&partnerID=40&md5=767ef7a3722db418108b012b5d78008b","Sports Performance Research Institute New Zealand, Auckland University of Technology, Auckland, New Zealand; Institute for Health and Sport, Victoria University, Melbourne, Australia; Department of Sport Sciences and Physical Education, Nord University, Levanger, Norway; National Institute of Fitness and Sports in Kanoya, Kanoya, Japan","Uthoff A., Sports Performance Research Institute New Zealand, Auckland University of Technology, Auckland, New Zealand; Zois J., Institute for Health and Sport, Victoria University, Melbourne, Australia; Van Den Tillaar R., Department of Sport Sciences and Physical Education, Nord University, Levanger, Norway; Nagahara R., National Institute of Fitness and Sports in Kanoya, Kanoya, Japan","Backward running (BR) and forward running (FR) are unique movements utilized by athletes in many sports. Importantly, this investigation provides further insights on BR and benchmarking against more commonly researched FR capacity. Twenty-one collegiate soccer players (age 20.0 ± 0.8 years, body mass 65.6 ± 7.7 kg, body height 1.70 ± 0.07 m) performed maximal effort BR and FR along 20 m of in-ground force platforms. Step kinematics and kinetics were compared between BR and FR over four relative acceleration phases (BR = steps 1–6, 7–12, 13–18 and 19–23; FR = steps 1–4, 5–8, 9–12, 13–15). The primary findings of this study were that BR speeds were 29% slower than FR (p < 0.001), all step kinematics differed between BR and FR (p < 0.01), except contact time from the second to fourth step phases (p > 0.05), and most step kinetics were lower during BR (p < 0.05), with the exceptions of peak vertical force (p > 0.05). These findings indicate that lower running speeds over the acceleration phases of BR appear to be primarily due to lower horizontal ground reaction force application, resulting in shorter stride lengths and decreased flight times compared to FR. © 2021 Informa UK Limited, trading as Taylor & Francis Group.","ground reaction force; Retro-running; sprinting; step characteristics","Acceleration; Athletic Performance; Biomechanical Phenomena; Humans; Kinetics; Male; Running; Soccer; Weight-Bearing; Young Adult; acceleration; article; contact time; controlled study; ground reaction force; human; kinematics; running; stride length; acceleration; athletic performance; biomechanics; comparative study; kinetics; male; physiology; running; soccer; weight bearing; young adult","Angelino D., McCabe T.J.G., Earp J.E., 35, 1, pp. 47-55, (2021); Arata A., Kinematic and kinetic evaluations of high speed backward running (Dissertation), (1999); Arellano C.J., Kram R., The effects of step width and arm swing on energetic cost and lateral balance during running, Journal of Biomechanics, 44, 7, pp. 1291-1295, (2011); Buchheit M., Samozino P., Glynn J.A., Michael B.S., Haddad H.A., Mendez-Villanueva A., Morin J.B., Mechanical determinants of acceleration and maximal sprinting speed in highly trained young soccer players, Journal of Sports Sciences, 32, 20, pp. 1906-1913, (2014); Cavagna G.A., Legramandi M.A., La Torre A., Running backwards: Soft landing-hard takeoff, a less efficient rebound, Proceedings of Biological Sciences, 278, 1704, pp. 339-346, (2011); Cavagna G.A., Legramandi M.A., La Torre A., An analysis of the rebound of the body in backward human running, Journal of Experimental Biology, 215, pp. 75-84, (2012); Cavanagh P.R., The biomechanics of lower extremity action in distance running, Foot & Ankle, 74, pp. 197-217, (1987); Cohen J., Statistical power analysis for the behavioral sciences, (1988); Colyer S.L., Nagahara R., Salo A.I.T., Kinetic demands of sprinting shift across the acceleration phase: Novel analysis of the entire waveforms, Scandinavian Journal of Medicine and Science in Sports, 28, 7, pp. 1784-1792, (2018); Debaere S., Jonkers L., Delecluse C., The contribution of step characteristics to sprint running performance in high-level male and female athletes, Journal of Strength and Conditioning Research, 27, 1, pp. 116-124, (2013); DeVita P., Stribling J., Lower extremity joint kinetics and energetics during backward running, Medicine and Science in Sports and Exercise, 23, 5, pp. 602-610, (1991); Flynn T.W., Connery S.M., Smutok M.A., Zeballos R.J., Weisman I.M., Comparison of cardiopulmonary responses to forward and backward walking and running, Medicine and Science in Sports and Exercise, 26, 1, pp. 89-94, (1994); Flynn T.W., Soutas-Little R.W., Patellofemoral joint compressive forces in forward and backward running, Journal of Orthopaedic and Sports Physical Therapy, 21, 5, pp. 277-282, (1995); Girard O., Brocherie F., Morin J.B., Degache F., Millet G.P., Comparison of four sections for analyzing running mechanics alterations during repeated treadmill sprints, Journal of Applied Biomechanics, 31, 5, pp. 389-395, (2015); Haugen T., Seller S., Sandbakk O., Tonnessen E., The training and development of elite sprint performance: An integration of scientific and best practice literature, Sports Medicine - Open, 5, (2019); Hunter J.P., Marcshall R.N., McNair P.J., Interaction of step length and step rate during sprint running, Medicine & Science in Sports & Exercise, 362, pp. 261-271, (2004); Karcher C., Buchheit M., On-court demands of elite handball, with special reference to playing position, Sports Medicine, 44, 6, pp. 797-814, (2014); Lockie R.G., Murphy A.J., Schultz A.B., Knight T.J., Janse De Jonge X.A.K., The effects of different speed training protocols on sprint acceleration kinematics and muscle strength and power in field sport athletes, Journal of Strength and Conditioning Research, 26, 6, pp. 1539-1550, (2012); Macadam P., Nuell S., Cronin J.B., Nagahara R., Uthoff A.M., Graham S.P., Neville J., Kinematic and kinetic differences in block and split-stance standing starts during 30 m sprint-running, European Journal of Sport Science, 19, 8, pp. 1024-1031, (2018); Miyashiro K., Nagahara R., Yamamoto K., Nishijima T., Kinematics of maximal speed sprinting with different running speed, leg length, and step characteristics, Frontiers in Sports and Active Living, 1, 37, (2019); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, Journal of Sports Science, 217, pp. 519-528, (2003); Murata M., Takai Y., Kanehisa H., Fukubayashi T., Nagahara R., Spatiotemporal and kinetic determinants of sprint acceleration performance in soccer players, Sports, 6, 4, (2018); Nagahara R., Haramura M., Takai Y., Oliver J., Wichitaksorn N., Sommerfield L.M., Cronin J.B., Age-related differences in kinematics and kinetics of sprinting in young female, Scandinavian Journal of Medical Sciences, 29, 6, pp. 800-807, (2019); Nagahara R., Matsubayashi T., Masuo A., Zushi K., Kinematics of transition during human accelerated sprinting, Biology Open, 3, 8, pp. 689-699, (2014); Nagahara R., Mizutani M., Matsuo A., Kanehisa H., Fukunaga T., Association of sprint performance with ground reaction forces during acceleration and maximal speed phases in a single sprint, Journal of Applied Biomechanics, 34, 2, pp. 104-110, (2017); Nagahara R., Mizutani M., Matsuo A., Kanehisa H., Fukunaga T., Association of step width with accelerated sprinting performance and ground reaction force, International Journal of Sports Medicine, 387, pp. 534-540, (2017); Nagahara R., Takai Y., Harmura M., Mizutani M., Matsuo A., Kanehisa H., Fukunaga T., Age-related differences in spatiotemporal variables and ground reaction forces during sprinting in boys, Pediatric Exercise Science, 30, 3, pp. 335-344, (2018); Roos P.E., Barton N., Van Deursen R.W.M., Patellofemoral joint compression forces in backward and forward running, Journal of Biomechanics, 459, pp. 1656-1660, (2012); Sussman D.H., Alrowayeh H., Walker M.L., Patellofemoral joint compressive forces during backward and foward running at the same speed, Journal of Musculoskeletal Research, 4, 2, pp. 107-118, (2000); Terblanche E., Page C., Kroff J., Venter R.E., The effect of backward locomotion training on the body composition and cardiorespiratory fitness of young women, International Journal of Sports Medicine, 26, 3, pp. 214-219, (2005); Threlkeld A.J., Horn T.S., Wojtowicz G., Rooney J.G., Shapiro R., Kinematics, ground reaction force, and muscle balance produced by backward running, Journal of Orthopaedic and Sports Physical Therapy, 11, 2, pp. 56-63, (1989); Uthoff A., Oliver J., Cronin J., Harrison C., Winwood P., A new direction to athletic performance: Understanding the acute and longitudinal responses to backward running, Sports Medicine, 48, 5, pp. 1083-1096, (2018); Uthoff A., Oliver J., Cronin J., Harrison C., Winwood P., Sprint-specific training in youth: Backward running vs forward running training on speed and power measures in adolescent male athletes, Journal of Strength & Conditioning Research, 34, 4, pp. 1113-1122, (2020); Uthoff A., Oliver J., Cronin J., Winwood P., Harrison C., Prescribing target running intensities for high-school athletes: An forward and backward running performance be autoregulated?, Sports, 6, 3, (2018); Uthoff A., Oliver J., Cronin J., Winwood P., Harrison C., Backward running: The why and how to program for better athleticism, Strength & Conditioning Journal, 41, 5, pp. 48-56, (2019); Weyand P.G., Sandell R.F., Prime D.N., Bundle M.W., The biological limits to running speed are imposed from the ground up, Journal of Applied Physiology, 108, 4, pp. 950-961, (2010); Weyand P.G., Sternlight D.B., Bellizzi M.J., Wright S., Faster top running speeds are achieved with greater ground forces not more rapid leg movements, Journal of Applied Physiology, 8, pp. 1991-1999, (2000)","J. Zois; Institute for Health and Sport, Victoria University, Melbourne, Australia; email: james.zois@vu.edu.au","","Routledge","02640414","","JSSCE","33711913","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-85102705672" "Farmer B.; Anderson D.; Katsavelis D.; Bagwell J.J.; Turman K.A.; Grindstaff T.L.","Farmer, Brooke (57219028770); Anderson, Dillon (57215131570); Katsavelis, Dimitrios (24330026400); Bagwell, Jennifer J. (56035931900); Turman, Kimberly A. (23135734000); Grindstaff, Terry L. (14053874400)","57219028770; 57215131570; 24330026400; 56035931900; 23135734000; 14053874400","Limb preference impacts single-leg forward hop limb symmetry index values following ACL reconstruction","2022","Journal of Orthopaedic Research","40","1","","200","207","7","2","10.1002/jor.25073","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105636167&doi=10.1002%2fjor.25073&partnerID=40&md5=e2434dccc6191d164725cf6d1c2e97a1","Department of Physical Therapy, Creighton University, Omaha, NE, United States; 21st Century Rehab, Webster City, IA, United States; Department of Exercise Science and Pre-Health Professions, Creighton University, Omaha, NE, United States; Department of Physical Therapy, California State University Long Beach, Long Beach, CA, United States; MD West One, Omaha, NE, United States","Farmer B., Department of Physical Therapy, Creighton University, Omaha, NE, United States; Anderson D., 21st Century Rehab, Webster City, IA, United States; Katsavelis D., Department of Exercise Science and Pre-Health Professions, Creighton University, Omaha, NE, United States; Bagwell J.J., Department of Physical Therapy, California State University Long Beach, Long Beach, CA, United States; Turman K.A., MD West One, Omaha, NE, United States; Grindstaff T.L., Department of Physical Therapy, Creighton University, Omaha, NE, United States","Following anterior cruciate ligament (ACL) reconstruction limb dominance for performing tasks is not considered when making rehabilitation progression decisions. The purpose of this study was to determine if strength and functional outcomes differ between individuals who injured their preferred or nonpreferred jumping limb and to determine if these same outcomes differ between individuals who injured their preferred or nonpreferred limb used to kick a ball. A secondary purpose was to determine the association of quadriceps strength and single-leg forward hop performance with patient self-reported function. Forty individuals with ACL reconstruction (age = 20.0 ± 4.6 years, height = 174.2 ± 12.7 cm, mass = 71.2 ± 12.7 kg, time since surgery = 5.3 ± 0.8 months) were included in the study. Primary outcome measures included, International Knee Documentation Committee Subjective Knee Form (IKDC) scores, quadriceps limb symmetry index (LSI) values, and single-leg forward hop LSI values. Limb preference was defined two ways, kicking a ball and performing a unilateral jump. There were no significant differences between groups based on injury to the preferred limb to kick a ball for any of the outcome variables. Individuals who injured their nonpreferred jumping limb demonstrated significantly (p = 0.05, d = 0.77) lower single-leg forward hop LSI values (81.1% ± 19.5%) compared to individuals who injured their preferred jumping limb (94.1% ± 12.6%), but demonstrated no differences in IKDC scores or quadriceps LSI values. Quadriceps LSI and single-leg forward hop LSI explained 73% of the variance in IKDC scores, but quadriceps LSI had the strongest association (r = 0.790). These findings suggests that limb preference influences single forward hop LSI values and should be considered following ACL reconstruction. © 2021 Orthopaedic Research Society. Published by Wiley Periodicals LLC","","Adolescent; Adult; Anterior Cruciate Ligament Injuries; Anterior Cruciate Ligament Reconstruction; Humans; Leg; Muscle Strength; Quadriceps Muscle; Return to Sport; Young Adult; adult; ankle sprain; anterior cruciate ligament reconstruction; arthroscopy; Article; athlete; autograft; basketball player; biomechanics; body mass; clinical article; female; follow up; gait; grip strength; hamstring tendon; human; interrater reliability; jumping; knee function; knee injury; leg injury; limb; male; muscle strength; physical activity; quadriceps femoris muscle; quality of life; range of motion; secondary prevention; shoulder injury; soccer player; task performance; Tegner activity score; tendon graft; torque; visual analog scale; visual feedback; adolescent; anterior cruciate ligament injury; leg; rehabilitation; return to sport; young adult","Grindem H., Snyder-Mackler L., Moksnes H., Engebretsen L., Risberg M.A., Simple decision rules can reduce reinjury risk by 84% after ACL reconstruction: the Delaware-Oslo ACL cohort study, Br J Sports Med, 50, 13, pp. 804-808, (2016); Gokeler A., Welling W., Zaffagnini S., Seil R., Padua D., Development of a test battery to enhance safe return to sports after anterior cruciate ligament reconstruction, Knee Surg Sports Traumatol Arthrosc, 25, 1, pp. 192-199, (2017); Kyritsis P., Bahr R., Landreau P., Miladi R., Witvrouw E., Likelihood of ACL graft rupture: not meeting six clinical discharge criteria before return to sport is associated with a four times greater risk of rupture, Br J Sports Med, 50, 15, pp. 946-951, (2016); Myer G.D., Paterno M.V., Ford K.R., Quatman C.E., Hewett T.E., Rehabilitation after anterior cruciate ligament reconstruction: criteria-based progression through the return-to-sport phase, J Orthop Sports Phys Ther, 36, 6, pp. 385-402, (2006); Dingenen B., Gokeler A., Optimization of the return-to-sport paradigm after anterior cruciate ligament reconstruction: a critical step back to move forward, Sports Med, 47, 8, pp. 1487-1500, (2017); Wright R.W., Haas A.K., Anderson J., Et al., Anterior cruciate ligament reconstruction rehabilitation: MOON guidelines, Sports Health, 7, 3, pp. 239-243, (2015); Adams D., Logerstedt D.S., Hunter-Giordano A., Axe M.J., Snyder-Mackler L., Current concepts for anterior cruciate ligament reconstruction: a criterion-based rehabilitation progression, J Orthop Sports Phys Ther, 42, 7, pp. 601-614, (2012); Hartigan E.H., Zeni J.J., Di Stasi S., Axe M.J., Snyder-Mackler L., Preoperative predictors for noncopers to pass return to sports criteria after ACL reconstruction, J Appl Biomech, 28, 4, pp. 366-373, (2012); Logerstedt D., Grindem H., Lynch A., Et al., Single-legged hop tests as predictors of self-reported knee function after anterior cruciate ligament reconstruction: the Delaware-Oslo ACL cohort study, Am J Sports Med, 40, 10, pp. 2348-2356, (2012); Beischer S., Hamrin Senorski E., Thomee C., Samuelsson K., Thomee R., Knee strength, hop performance and self-efficacy at 4 months are associated with symmetrical knee muscle function in young athletes 1 year after an anterior cruciate ligament reconstruction, BMJ Open Sport Exerc Med, 5, 1, (2019); Schmitt L.C., Paterno M.V., Hewett T.E., The impact of quadriceps femoris strength asymmetry on functional performance at return to sport following anterior cruciate ligament reconstruction, J Ortho Sports Phys Ther, 42, 9, pp. 750-759, (2012); Zwolski C., Schmitt L.C., Quatman-Yates C., Thomas S., Hewett T.E., Paterno M.V., The influence of quadriceps strength asymmetry on patient-reported function at time of return to sport after anterior cruciate ligament reconstruction, Am J Sports Med, 43, 9, pp. 2242-2249, (2015); Menzer H., Slater L.V., Diduch D., Et al., The utility of objective strength and functional performance to predict subjective outcomes after anterior cruciate ligament reconstruction, Orthop J Sports Med, 5, 12, (2017); Nawasreh Z., Logerstedt D., Cummer K., Axe M.J., Risberg M.A., Snyder-Mackler L., Do patients failing return-to-activity criteria at 6 months after anterior cruciate ligament reconstruction continue demonstrating deficits at 2 years?, Am J Sports Med, 45, 5, pp. 1037-1048, (2017); Chaput M., Palimenio M., Farmer B., Et al., Quadriceps strength influences patient function more than single leg forward hop during late-stage ACL rehabilitation, Int J Sports Phys Ther, 16, 1, pp. 145-155, (2021); Smith A.H., Capin J.J., Zarzycki R., Snyder-Mackler L., Athletes with bone-patellar tendon-bone autograft for anterior cruciate ligament reconstruction were slower to meet rehabilitation milestones and return-to-sport criteria than athletes with hamstring tendon autograft or soft tissue allograft: secondary analysis from the ACL-sports trial, J Orthop Sports Phys Ther, 50, 5, pp. 259-266, (2020); Czuppon S., Racette B.A., Klein S.E., Harris-Hayes M., Variables associated with return to sport following anterior cruciate ligament reconstruction: a systematic review, Br J Sports Med, 48, 5, pp. 356-364, (2014); Logerstedt D.S., Scalzitti D., Risberg M.A., Et al., Knee stability and movement coordination impairments: Knee ligament sprain revision 2017, J Orthop Sports Phys Ther, 47, 11, pp. A1-A47, (2017); Ardern C.L., Taylor N.F., Feller J.A., Webster K.E., A systematic review of the psychological factors associated with returning to sport following injury, Br J Sports Med, 47, 17, pp. 1120-1126, (2013); Boo H., Howe T., Koh J.S., Effect of leg dominance on early functional outcomes and return to sports after anterior cruciate ligament reconstruction, J Orthop Surg, 28, 1, (2020); Souissi S., Chaouachi A., Burnett A., Et al., Leg asymmetry and muscle function recovery after anterior cruciate ligament reconstruction in elite athletes: a pilot study on slower recovery of the dominant leg, Biol Sport, 37, 2, pp. 175-184, (2020); Mokhtarzadeh H., Ewing K., Janssen I., Yeow C.H., Brown N., Lee P.V.S., The effect of leg dominance and landing height on ACL loading among female athletes, J Biomech, 60, pp. 181-187, (2017); Arundale A., Silvers H., Logerstedt D., Rojas J., Snyder-Mackler L., An interval kicking progression for return to soccer following lower extremity injury, Int J Sports Phys Ther, 10, 1, pp. 114-127, (2015); Carcia C.R., Cacolice P.A., McGeary S., Defining lower extremity dominance: The relationship between preferred lower extremity and two functional tasks, Int J Sports Phys Ther, 14, 2, pp. 188-191, (2019); van Melick N., van Cingel R.E., Brooijmans F., Et al., Evidence-based clinical practice update: practice guidelines for anterior cruciate ligament rehabilitation based on a systematic review and multidisciplinary consensus, Br J Sports Med, 50, 24, pp. 1506-1515, (2016); Grindstaff T.L., Palimenio M.R., Franco M., Anderson D., Bagwell J.J., Katsavelis D., Optimizing between-session reliability for quadriceps peak torque and rate of torque development measures, J Strength Cond Res, 33, 7, pp. 1840-1847, (2019); Grindstaff T.L., Threlkeld A.J., Optimal stimulation parameters to detect deficits in quadriceps voluntary activation, J Strength Cond Res, 28, 2, pp. 381-389, (2014); Hansen E.M., McCartney C.N., Sweeney R.S., Palimenio M.R., Grindstaff T.L., Hand-held dynamometer positioning impacts discomfort during quadriceps strength testing: a validity and reliability study, Int J Sports Phys Ther, 10, 1, pp. 62-68, (2015); Lesnak J., Anderson D., Farmer B., Katsavelis D., Grindstaff T.L., Validity of hand-held dynamometry in measuring quadriceps strength and rate of torque development, Int J Sports Phys Ther, 14, 2, pp. 180-187, (2019); Luc B.A., Harkey M.H., Arguelles G.D., Blackburn J.T., Ryan E.D., Pietrosimone B., Measuring voluntary quadriceps activation: effect of visual feedback and stimulus delivery, J Electromyog Kinesiol, 26, pp. 73-81, (2016); Reid A., Birmingham T.B., Stratford P.W., Alcock G.K., Giffin J.R., Hop testing provides a reliable and valid outcome measure during rehabilitation after anterior cruciate ligament reconstruction, Phys Ther, 87, 3, pp. 337-349, (2007); Augustsson J., Thomee R., Linden C., Folkesson M., Tranberg R., Karlsson J., Single-leg hop testing following fatiguing exercise: reliability and biomechanical analysis, Scand J Med Sci Sports, 16, 2, pp. 111-120, (2006); Thomas C., Dos'Santos T., Comfort P., Jones P.A., Between-session reliability of common strength- and power-related measures in adolescent athletes, Sports, 5, 1, (2017); Portney L.G., Watkins M.P., Foundations of Clinical Research: Applications to Practice, (2009); Elias L.J., Bryden M.P., Bulman-Fleming M.B., Footedness is a better predictor than is handedness of emotional lateralization, Neuropsychologia, 36, 1, pp. 37-43, (1998); Velotta J.W.J., Ramirez A., Winstead J., Bahamonde R., Relationship between leg dominance tests and type of task, Port J Sports Sci, 11, 2, pp. 1035-1038, (2011); Zvijac J.E., Toriscelli T.A., Merrick W.S., Papp D.F., Kiebzak G.M., Isokinetic concentric quadriceps and hamstring normative data for elite collegiate american football players participating in the nfl scouting combine, J Strength Cond Res, 28, 4, pp. 875-883, (2014); Trzaskoma Z., Ilnicka L., Wiszomirska I., Wit A., Wychowanski M., Laterality versus jumping performance in men and women, Acta Bioeng Biomech, 17, 1, pp. 103-110, (2015); Ashby B.M., Heegaard J.H., Role of arm motion in the standing long jump, J Biomech, 35, 12, pp. 1631-1637, (2002); McGrath T.M., Waddington G., Scarvell J.M., Et al., The effect of limb dominance on lower limb functional performance—a systematic review, J Sports Sci, 34, 4, pp. 289-302, (2016); Muller U., Kruger-Franke M., Schmidt M., Rosemeyer B., Predictive parameters for return to pre-injury level of sport 6 months following anterior cruciate ligament reconstruction surgery, Knee Surg Sports Traumatol Arthrosc, 23, 12, pp. 3623-3631, (2015); Pottkotter K.A., Di Stasi S.L., Schmitt L.C., Et al., Timeline of gains in quadriceps strength symmetry and patient-reported function early after ACL reconstruction, Int J Sports Phys Ther, 15, 6, pp. 995-1005, (2020); Christensen J.C., Goldfine L.R., Barker T., Collingridge D.S., What can the first 2 months tell us about outcomes after anterior cruciate ligament reconstruction?, J Athl Train, 50, 5, pp. 508-515, (2015); Wellsandt E., Failla M.J., Snyder-Mackler L., Limb symmetry indexes can overestimate knee function after anterior cruciate ligament injury, J Ortho Sports Phys Ther, 47, 5, pp. 334-338, (2017); Ithurburn M.P., Paterno M.V., Ford K.R., Hewett T.E., Schmitt L.C., Young athletes after anterior cruciate ligament reconstruction with single-leg landing asymmetries at the time of return to sport demonstrate decreased knee function 2 years later, Am J Sports Med, 45, 11, pp. 2604-2613, (2017); Flosadottir V., Roos E.M., Ageberg E., Muscle function is associated with future patient-reported outcomes in young adults with ACL injury, BMJ Open Sport Exerc Med, 2, 1, (2016); Lee D.W., Yang S.J., Cho S.I., Lee J.H., Kim J.G., Single-leg vertical jump test as a functional test after anterior cruciate ligament reconstruction, Knee, 25, 6, pp. 1016-1026, (2018); Davies W.T., Myer G.D., Read P.J., Is it time we better understood the tests we are using for return to sport decision making following ACL econstruction? A critical review of the hop tests, Sports Med, 50, 3, pp. 485-495, (2020); Fischer F., Fink C., Herbst E., Et al., Higher hamstring-to-quadriceps isokinetic strength ratio during the first post-operative months in patients with quadriceps tendon compared to hamstring tendon graft following ACL reconstruction, Knee Surg Sports Traumatol Arthrosc, 26, 2, pp. 418-425, (2018); Myers B.A., Jenkins W.L., Killian C., Rundquist P., Normative data for hop tests in high school and collegiate basketball and soccer players, Int J Sports Phys Ther, 9, 5, pp. 596-603, (2014)","T.L. Grindstaff; Department of Physical Therapy, Creighton University, Omaha, United States; email: GrindstaffTL@gmail.com","","John Wiley and Sons Inc","07360266","","JORED","33934379","English","J. Orthop. Res.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-85105636167" "Iga T.; Nunome H.; Sano S.; Sato N.; Ikegami Y.","Iga, Takahito (55707999300); Nunome, Hiroyuki (6507093692); Sano, Shinya (36784956700); Sato, Nahoko (56369885600); Ikegami, Yasuo (7103189958)","55707999300; 6507093692; 36784956700; 56369885600; 7103189958","Novel mathematical model to estimate ball impact force in soccer","2018","Sports Biomechanics","17","4","","477","493","16","3","10.1080/14763141.2017.1364415","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85034735014&doi=10.1080%2f14763141.2017.1364415&partnerID=40&md5=9b8dccd0ecd5cd215eb71eaf01806aa6","Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan; Department of Cross Cultural Studies, Gifu City Women’s College, Gifu, Japan; Faculty of Rehabilitation Science, Department of Physical Therapy, Nagoya Gakuin University, Seto, Japan; Faculty of Health and Medical Sciences, Aichi Shukutoku University, Nagakute, Japan","Iga T., Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan; Nunome H., Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan; Sano S., Department of Cross Cultural Studies, Gifu City Women’s College, Gifu, Japan; Sato N., Faculty of Rehabilitation Science, Department of Physical Therapy, Nagoya Gakuin University, Seto, Japan; Ikegami Y., Faculty of Health and Medical Sciences, Aichi Shukutoku University, Nagakute, Japan","To assess ball impact force during soccer kicking is important to quantify from both performance and chronic injury prevention perspectives. We aimed to verify the appropriateness of previous models used to estimate ball impact force and to propose an improved model to better capture the time history of ball impact force. A soccer ball was fired directly onto a force platform (10 kHz) at five realistic kicking ball velocities and ball behaviour was captured by a high-speed camera (5,000 Hz). The time history of ball impact force was estimated using three existing models and two new models. A new mathematical model that took into account a rapid change in ball surface area and heterogeneous ball deformation showed a distinctive advantage to estimate the peak forces and its occurrence times and to reproduce time history of ball impact forces more precisely, thereby reinforcing the possible mechanics of ‘footballer’s ankle’. Ball impact time was also systematically shortened when ball velocity increases in contrast to practical understanding for producing faster ball velocity, however, the aspect of ball contact time must be considered carefully from practical point of view. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.","ball reaction force; collision; Football; kicking; validation check","Ankle; Biomechanical Phenomena; Foot; Humans; Kinetics; Models, Statistical; Soccer; Sports Equipment; Time and Motion Studies; Video Recording; ankle; biomechanics; foot; human; kinetics; physiology; soccer; sports equipment; statistical model; task performance; videorecording","Asai T., Carre M.J., Akatsuka T., Haake S.J., The curve kick of a football I: Impact with the foot, Sports Engineering, 5, pp. 183-192, (2002); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Bull Andersen T., Dorge H.C., Thomsen F.I., Collisions in soccer kicking, Sports Engineering, 2, pp. 121-125, (1999); Ishii H., Maruyama T., Influence of foot angle and impact point on ball behavior in side-foot soccer kicking, The Impact of Technology on Sport, 2, pp. 403-408, (2007); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sport Science and Medicine, 6, pp. 154-165, (2007); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, Journal of Sports Sciences, 24, pp. 11-22, (2006); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 24, pp. 529-541, (2006); Nunome H., Shinkai H., Ikegami Y., Ball impact kinematics and dynamics in soccer kicking, Proceedings of the 30th international conference on biomechanics in sports, pp. 35-42, (2012); Putnam C.A., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Medicine and Science in Sports and Exercise, 23, pp. 130-144, (1991); Shinkai H., Nunome H., Isokawa M., Ikegami Y., Ball impact dynamics of instep soccer kicking, Medicine and Science in Sports Exercise, 41, pp. 889-897, (2009); Shinkai H., Nunome H., Suito H., Inoue K., Ikegami Y., Cross-sectional change of ball impact in instep kicks from junior to professional footballers, Science and football VII, pp. 27-32, (2013); Smith G., Padding point extrapolation techniques for the butterworth digital filter, Journal of Biomechanics, 22, pp. 967-971, (1989); Tol J.L., Slim E., Soest A.J., Dijk C.N., The relationship of the kicking action in soccer and anterior ankle impingement syndrome: A biomechanical analysis, American Journal of Sports Medicine, 30, pp. 45-50, (2002); Tsaousidis N., Zatsiorsky V., Two types of ball-effector interaction and their relative contribution to soccer kicking, Human Movement Science, 15, pp. 861-876, (1996); Winter D.A., Biomechanics and motor control of human movement, pp. 45-81, (2009)","T. Iga; Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan; email: iga@fukuoka-u.ac.jp","","Routledge","14763141","","","29166851","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-85034735014" "Azevedo R.R.; Nery S.B.; Stefanyshyn D.J.; Carpes F.P.","Azevedo, Renato R (57192553742); Nery, Suellen B (57217178650); Stefanyshyn, Darren J (6701771084); Carpes, Felipe P (16238221400)","57192553742; 57217178650; 6701771084; 16238221400","Plantar loading in the youth soccer player during common soccer movements and risk for foot injury","2020","Injury","51","8","","1905","1909","4","3","10.1016/j.injury.2020.06.009","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086656378&doi=10.1016%2fj.injury.2020.06.009&partnerID=40&md5=2f869cff951fd1b860379c7d62e42562","Applied Neuromechanics Research Group, Federal University of Pampa - Laboratory of Neuromechanics, 97500-970, Uruguaiana, RS, Brazil; Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada","Azevedo R.R., Applied Neuromechanics Research Group, Federal University of Pampa - Laboratory of Neuromechanics, 97500-970, Uruguaiana, RS, Brazil; Nery S.B., Applied Neuromechanics Research Group, Federal University of Pampa - Laboratory of Neuromechanics, 97500-970, Uruguaiana, RS, Brazil; Stefanyshyn D.J., Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada; Carpes F.P., Applied Neuromechanics Research Group, Federal University of Pampa - Laboratory of Neuromechanics, 97500-970, Uruguaiana, RS, Brazil","Introduction: Soccer players are at high risk of stress injuries in the foot. While most research addresses this issue in professional athletes, there is little information concerning young athletes. As soccer is practiced around the world since early infancy, we set out to determine whether young soccer athletes are susceptible to increased foot loading that increase risk factors for foot injuries in a similar manner as reported by the literature to the adult athlete. Methods: twenty-six male adolescents (mean age 16 years old) were organized into two groups: soccer players (n = 13) and controls (n = 13). Groups were compared regarding foot sensitivity, ankle range of motion, Q-angle, and plantar pressure determined during running and cutting movements performed at maximal speed and using different shoes. Results: Foot sensitivity, ankle range of motion and Q-angle did not differ between the groups. During performance of soccer actions, young players showed higher peak pressure in the lateral region of the foot including the fifth metatarsal region. These higher peaks were minimized by manipulation of the footwear. Conclusion: In summary, young soccer athletes show dynamic plantar pressure patterns that are related to foot injury in the adult athlete, and this condition can be minimized by the manipulation of the footwear. Additional attention should be paid to the young athlete in soccer aiming to minimize long-term risk for stress injuries in the foot. © 2020 Elsevier Ltd","Fifth metatarsal; Foot; Injury; Plantar pressure","Adolescent; Adult; Foot; Foot Injuries; Humans; Male; Pressure; Shoes; Soccer; adolescent; ankle; anthropometry; Article; athlete; attention; biomechanics; body mass; child; clinical article; clinical assessment; exercise; foot injury; gait; human; injury; kinematics; lunge test; male; obesity; physiological stress; plantaris muscle; Q angle; range of motion; risk factor; running; sensitivity analysis; soccer; soccer player; stretching exercise; threshold limit value; tibial tuberosity; training; velocity; visual feedback; walking; adult; foot; pressure; shoe","Zwitser E.W., Breederveld R.S., Fractures of the fifth metatarsal; diagnosis and treatment, Injury, 41, 6, pp. 555-562, (2010); Herrera-Soto J.A., Scherb M., Duffy M.F., Albright J.C., Fractures of the fifth metatarsal in children and adolescents, J Pediatr Orthop, 27, 4, pp. 427-431, (2007); Ekstrand J., van Dijk C.N., Fifth metatarsal fractures among male professional footballers: a potential career-ending disease, Br J Sports Med, 47, 12, pp. 754-758, (2013); Fujitaka K., Taniguchi A., Isomoto S., Et al., Pathogenesis of fifth metatarsal fractures in college soccer players, Orthop J Sports Med, 3, 9, (2015); Orendurff M.S., Rohr E.S., Segal A.D., Medley J.W., Green J.R., Kadel N.J., Biomechanical analysis of stresses to the fifth metatarsal bone during sports maneuvers: implications for fifth metatarsal fractures, Phys Sportsmed, 37, 2, pp. 87-92, (2009); Sims E.L., Hardaker W.M., Queen R.M., Gender differences in plantar loading during three soccer-specific tasks, Br J Sports Med, 42, 4, pp. 272-277, (2008); Gross T.S., Bunch R.P., A mechanical model of metatarsal stress fracture during distance running, Am J Sports Med., 17, 5, pp. 669-674, (1989); Bentley J.A., Ramanathan A.K., Arnold G.P., Wang W., Abboud R.J., Harmful cleats of football boots: a biomechanical evaluation, Foot Ankle Surg, 17, 3, pp. 140-144, (2011); Petrisor B.A., Ekrol I., Court-Brown C., The epidemiology of metatarsal fractures, Foot Ankle Int, 27, 3, pp. 172-174, (2006); Carl H.D., Pauser J., Swoboda B., Jendrissek A., Brem M., Soccer boots elevate plantar pressures in elite male soccer professionals, Clin J Sport Med, 24, 1, pp. 58-61, (2014); Azevedo R.R., da Rocha E.S., Franco P.S., Carpes F.P., Plantar pressure asymmetry and risk of stress injuries in the foot of young soccer players, Phys Therapy Sport, 24, pp. 39-43, (2017); Patel M., Foam posturography: standing on foam is not equivalent to standing with decreased rapidly adapting mechanoreceptive sensation, Exp Brain Res, 208, 4, (2011); Perry S.D., Evaluation of age-related plantar-surface insensitivity and onset age of advanced insensitivity in older adults using vibratory and touch sensation tests, Neuroscience letters., 392, 1-2, pp. 62-67, (2006); Holewski J.J., Stess R.M., Graf P.M., Grunfeld C., Aesthesiometry: quantification of cutaneous pressure sensation in diabetic peripheral neuropathy, J Rehabil Res Dev, 25, 2, pp. 1-10, (1988); Breger D., Correlating Semmes-Weinstein monofilament mappings with sensory nerve conduction parameters in Hansen's disease patients: an update, J Hand Therapy, 1, 1, pp. 33-37, (1987); Schlee G., Sterzing T., Milani T.L., Foot sole skin temperature affects plantar foot sensitivity, Clin Neurophysiol, 120, 8, pp. 1548-1551, (2009); Hoch M.C., McKeon P.O., Normative range of weight-bearing lunge test performance asymmetry in healthy adults, Man Ther, 16, 5, pp. 516-519, (2011); Cavanagh P., Biomechanics of Distance Running, Human Kinetics, (1990); Sartor C.D., Watari R., Passaro A.C., Picon A.P., Hasue R.H., Sacco I.C., Effects of a combined strengthening, stretching and functional training program versus usual-care on gait biomechanics and foot function for diabetic neuropathy: a randomized controlled trial, BMC Musculoskelet Disord., 13, (2012); Zhang S., Li L., The differential effects of foot sole sensory on plantar pressure distribution between balance and gait, Gait Posture, 37, 4, pp. 532-535, (2013); Queen R.M., Haynes B.B., Hardaker W.M., Garrett W.E., Forefoot loading during 3 athletic tasks, Am J Sports Med, 35, 4, pp. 630-636, (2007); Blanchard S., Palestri J., Guerr J.L., Behr M., Current Soccer Footwear, Its Role in Injuries and Potential for Improvement, Sports Med Int Open, 2, 2, pp. E52-E61, (2018); Lees A., Nolan L., The biomechanics of soccer: a review, J Sports Sci, 16, 3, pp. 211-234, (1998); Hennig E M., The influence of soccer shoe design on player performance and injuries, Res Sports Med, 19, pp. 186-201, (2011)","F.P. Carpes; Applied Neuromechanics Research Group, Federal University of Pampa - Laboratory of Neuromechanics, 97500-970, Uruguaiana, Brazil; email: carpes@unipampa.edu.br","","Elsevier Ltd","00201383","","INJUB","32564963","English","Injury","Article","Final","","Scopus","2-s2.0-85086656378" "Eagles A.N.; Sayers M.G.; Lovell D.I.","Eagles, Alexander N. (54388351000); Sayers, Mark G. (36128060500); Lovell, Dale I. (33068156300)","54388351000; 36128060500; 33068156300","Factors that influence ground reaction force profiles during counter movement jumping","2017","Journal of Sports Medicine and Physical Fitness","57","5","","514","520","6","2","10.23736/S0022-4707.16.06281-2","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85017552485&doi=10.23736%2fS0022-4707.16.06281-2&partnerID=40&md5=efc3a7a042a97905f365c940f82098f6","Health, Education, and Engineering, Faculty of Science, University of Sunshine Coast, Maroochydore, QLD, Australia","Eagles A.N., Health, Education, and Engineering, Faculty of Science, University of Sunshine Coast, Maroochydore, QLD, Australia; Sayers M.G., Health, Education, and Engineering, Faculty of Science, University of Sunshine Coast, Maroochydore, QLD, Australia; Lovell D.I., Health, Education, and Engineering, Faculty of Science, University of Sunshine Coast, Maroochydore, QLD, Australia","BAKGROUND: The purpose of this study was to examine how hip, knee and ankle kinetics and kinematics influence effective impulse production during countermovement jumps. METHODS: Eighteen semi-professional soccer players (22.8±2.2 years) volunteered to participate in the study. Participants completed three maximal countermovement jumps on two force platforms (1000 Hz) that were linked to a nine camera infrared motion capture system (500 Hz). RESULTS: Kinetic and kinematic data revealed jumpers who fail to achieve uniform ground reaction force curves that result in optimal impulse production during their jump always display hip adduction and or hip internal rotation during the concentric phase of the countermovement jump. The variation of hip adduction and or internal rotation likely represents failed joint transition during the concentric phase of the countermovement jump and appears to account for a non-uniform force trace seen in these jumpers. CONCLUSIONS: The findings suggest rehabilitation and conditioning exercises for injury prevention and performance may benefit from targeting frontal and transverse plane movement. © 2016 Edizioni Minerva Medica.","Analysis; Biomechanical phenomena; Kinetics","Ankle; Ankle Joint; Biomechanical Phenomena; Humans; Kinetics; Knee Joint; Muscle Contraction; Plyometric Exercise; Soccer; Sports; Task Performance and Analysis; accident prevention; adduction; ankle; biomechanics; exercise; ground reaction force; hip; human; human experiment; infrared radiation; jumping; kinematics; knee; rehabilitation; rotation; soccer player; biomechanics; controlled clinical trial; controlled study; kinetics; muscle contraction; physiology; plyometrics; procedures; soccer; sport; task performance","Singh H., Kim D., Kim E., Bemben M.G., Anderson M., Seo D.I., Et al., Jump test performance and sarcopenia status in men and women, 55 to 75 years of age, Journal of Geriatric Physical Therapy, 37, pp. 76-82, (2014); Clanton T.O., Matheny L.M., Jarvis H.C., Jeronimus A.B., Return to play in athletes following ankle injuries, Sports Health, 4, pp. 471-474, (2012); Hudgins B., Scharfenberg J., Triplett N.T., Mcbride J.M., Relationship between jumping ability and running performance in events of varying distance, J Strength Cond Res, 27, pp. 563-567, (2013); Stone M.H., Sands W.A., Carlock J., Callan S., Dickie D., Daigle K., Et al., The importance of isometric maximum strength and peak rate-of-force development in sprint cycling, J Strength Cond Res, 18, pp. 878-884, (2004); West D.J., Owen N.J., Cunningham D.J., Cook C.J., Kilduff L.P., Strength and power predictors of swimming starts in international sprint swimmers, J Strength Cond Res, 25, pp. 950-955, (2011); Cronin J., Sleivert G., Challenges in understanding the influence of maximal power training on improving athletic performance, Sports Medicine, 35, pp. 213-234, (2005); Dugan E.L., La D.T., Humphries B., Hasson C.J., Newton R.U., Determining the optimal load for jump squats: A review of methods and calculations, J Strength Cond Res, 18, pp. 668-674, (2004); Owen N.J., Watkins J., Kilduff L.P., Bevan H.R., Bennett M., Development of a criterion method to determine peak mechanical power output in a countermovement jump, J Strength Cond Res, 28, pp. 1552-1558, (2014); Bobbert M.F., Van Ingen Schenau G.J., Coordination in vertical jumping, Journal of Biomechanics, 21, pp. 249-262, (1988); Mclean S.G., Huang X., Van Den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clinical Biomechanics, 20, pp. 863-870, (2005); Pappas E., Sheikhzadeh A., Hagins M., Nordin M., The effect of gender and fatigue on the biomechanics of bilateral landings from a jump: Peak values, Journal of Sports Science & Medicine, 6, (2007); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., Mclean S.G., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in, female athletes a prospective study, The American Journal of Sports Medicine, 33, pp. 492-501, (2005); Powers C.M., The influence of abnormal hip mechanics on knee injury: A biomechanical perspective, Journal of Orthopaedic & Sports Physical Therapy, 40, pp. 42-51, (2010); Claiborne T.L., Armstrong C.W., Gandhi V., Pincivero D.M., Relationship between hip and knee strength and knee valgus during a single leg squat, Journal of Applied Biomechanics, 22, (2006); Dowling J.J., Vamos L., Identification of kinetic and temporal factors related to vertical jump performance, J Appl Biomech, 9, pp. 95-110, (1993); Garhammer J., Gregor R., Propulsion forces as a function of intensity for weightlifting and vertical jumping, J Strength Cond Res, 6, pp. 129-134, (1992); McCann M.R., Flanagan S.P., The effects of exercise selection and rest interval on postactivation potentiation of vertical jump performance, J Strength Cond Res, 24, pp. 1285-1291, (2010); Riggs M.P., Sheppard J.M., The relative importance of strength and power qualities to vertical jump height of elite beach volleyball players during the counter-movement and squat jump, Journal of Human Sport, and Exercise, 3, pp. 221-236, (2009); McLellan C.P., Lovell D.I., Gass G.C., The role of rate of force development on vertical jump performance, J Strength Cond Res, 25, pp. 379-385, (2011); Young W.B., Bilby G.E., The effect of voluntary effort to influence speed of contraction on strength, muscular power, and hypertrophy development, J Strength Cond Res, 7, pp. 172-178, (1993); Vanezis A., Lees A., A biomechanical analysis of good and poor performers of the vertical jump, Ergonomics, 48, pp. 1594-1603, (2005); Lees A., Vanrenterghem J., Clercq D.D., Understanding how an arm swing enhances performance in the vertical jump, Journal of Biomechanics, 37, pp. 1929-1940, (2004); Gard S.A., Miff S.C., Kuo A.D., Comparison of kinematic and kinetic methods for computing the vertical motion of the body center of mass during walking, Human Movement Science, 22, pp. 597-610, (2004); Yang F., Pai Y.-C., Can sacral marker approximate center of mass during gait and slip-fall recovery among community-dwelling older adults?, J Biomech, 47, pp. 3807-3812, (2014); Winter D.A., Biomechanics and Motor Control of Human Movement, (2005); Wu G., Siegler S., Allard P., Kirtley C., Leardini A., Rosenbaum D., Et al., ISB recommendation on definitions of joint coordinate system of various joints for the reporting of human joint motion-part I: Ankle, hip, and spine, Journal of Biomechanics, 35, pp. 543-548, (2002); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (1988); Hollman J.H., Ginos B.E., Kozuchowski J., Vaughn A.S., Krause D.A., Youdas J.W., Relationships between knee valgus, hip-muscle strength, and hip-muscle recruitment during a single-limb step-down, Journal of Sport, rehabilitation, 18, (2009); Jacobs C.A., Uhl T.L., Mattacola C.G., Shapiro R., Rayens W.S., Hip abductor function and lower extremity landing kinematics: Sex differences, Journal of Athletic Training, 42, (2007); Willson J.D., Ireland M.L., Davis I., Core strength and lower extremity alignment during single leg squats, Medicine and Science in Sports and Exercise, 38, (2006); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000)","A.N. Eagles; Health, Education, and Engineering, Faculty of Science, University of Sunshine Coast, Maroochydore, Australia; email: a.n.eagles23@gmail.com","","Edizioni Minerva Medica","00224707","","JMPFA","26959873","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-85017552485" "Sun D.; Gu Y.; Fekete G.; Fernandez J.","Sun, Dong (56443080100); Gu, Yaodong (26321078600); Fekete, Gusztáv (41761338200); Fernandez, Justin (55257959900)","56443080100; 26321078600; 41761338200; 55257959900","Effects of different soccer boots on biomechanical characteristics of cutting movement on artificial turf","2016","Journal of Biomimetics, Biomaterials and Biomedical Engineering","27","","","24","35","11","2","10.4028/www.scientific.net/JBBBE.27.24","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84969972364&doi=10.4028%2fwww.scientific.net%2fJBBBE.27.24&partnerID=40&md5=7dcede61960b1a05fff9c5cadb1e7275","Faculty of Sports Science, Ningbo University, China; Research Academy of Grand Health Interdisciplinary, Ningbo University, China; Department of Mechanical Engineering, University of West Hungary, Hungary; Department of Engineering Science, University of Auckland, New Zealand; Auckland Bioengineering Institute, University of Auckland, New Zealand","Sun D., Faculty of Sports Science, Ningbo University, China, Research Academy of Grand Health Interdisciplinary, Ningbo University, China; Gu Y., Faculty of Sports Science, Ningbo University, China, Research Academy of Grand Health Interdisciplinary, Ningbo University, China; Fekete G., Department of Mechanical Engineering, University of West Hungary, Hungary; Fernandez J., Department of Engineering Science, University of Auckland, New Zealand, Auckland Bioengineering Institute, University of Auckland, New Zealand","The purpose of this study was to testing for difference in performance and injury risks between three different outsole configuration soccer boots on artificial turf. Fourteen experienced soccer players performed 45° cut test. They selected soccer boots with artificial ground design (AG), turf cleats boots (TF) and indoor boots (IN) randomly. A Vicon three dimension motion analysis system was used to capture kinematic data and Kistler force platform was used to record the ground reaction force. Novel Pedar-X insole plantar pressure measurement system was utilized to collect the plantar pressure synchronized. During 45° cut, artificial ground design (AG) showed significantly smaller peak knee flexion (p<0.001) and greater abduction angles (p<0.001) than indoor boots (IN). AG showed significantly greater vertical average loading rate (VALR) compared with TF (p=0.005) and IN (p=0.003). The results of plantar pressure found that AG showed the highest peak pressure and force-time integral in the heel (H) and medial forefoot (MFF). Artificial ground design (AG) and turf cleats (TF) may offer a performance benefit on artificial turf compared to IN. In summary, AG may enhance athletic performance on artificial turf, but also may undertake higher risks of non-contact injuries compared with TF and IN. © 2016 Trans Tech Publications, Switzerland.","Artificial turf; Biomechanics; Cutting; Soccer boots","Biomechanics; Biophysics; Cutting; Gait analysis; Physiological models; Artificial turfs; Athletic performance; Biomechanical characteristics; Ground reaction forces; Motion analysis system; Performance benefits; Plantar pressure measurement; Soccer boots; Sports","Schrier N.M., Wannop J.W., Lewinson R.T., Worobets J., Stefanyshyn D., Shoe traction and surface compliance affect performance of soccer-related movements, Footwear Science, 6, 2, pp. 69-80, (2014); Gains G.L., Swedenhjelm A.N., Mayhew J.L., Bird H.M., Houser J.J., Comparison of speed and agility performance of college football players on field turf and natural grass, Journal of Strength & Conditioning Research, 24, 10, pp. 2613-2617, (2010); Muller C., Sterzing T., Lange J., Milani T.L., Comprehensive evaluation of player-surface interaction on artificial soccer turf, Sports Biomechanics, 9, 9, pp. 193-205, (2010); Potthast W., Verhelst R., Hughes M., Stone K., Clercq D.D., Football-specific evaluation of player-surface interaction on different football turf system, Sports Technology, 3, 1, pp. 5-12, (2010); Bramwell S.T., Requa R.K., Garrick J.G., High school football injuries: A pilot comparison of playing surfaces, Medicine & Science in Sports, 4, 4, pp. 166-179, (1972); Skovron M.L., Levy I.M., Agel J., Living with artificial grass: A knowledge update. Part 2: Epidemiology, American Journal of Sports Medicine, 18, 5, pp. 510-523, (1990); Soligard T., Bahr R., Andersen T.E., Injury risk on artificial turf and grass in youth tournament football, Scandinavian Journal of Medicine & Science in Sports, 22, 3, pp. 356-361, (2012); Dowling A.V., Stefano C., Chaudhari A.M.W., Andriacchi T.P., Shoe-surface friction influences movement strategies during a side-step cutting task: Implications for anterior cruciate ligament injury risk, American Journal of Sports Medicine, 38, 3, pp. 478-485, (2010); Joseph S.T., Theodore Q., Effect of shoe type and cleat length on incidence and severity of knee injuries among high school football players, Research Quarterly, 42, 2, pp. 203-211, (1971); Luo G., Stefanyshyn D., Identification of critical traction values for maximum athletic performance, Footwear Science, 3, 3, pp. 127-138, (2011); Krahenbuhl G.S., Speed of movement with varying footwear conditions on synthetic turf and natural grass, Research Quarterly, 45, 1, (1974); Sterzing T., Muller C., Ewald H.M., Thomas L.M., Actual and perceived running performance in soccer shoes: A series of eight studies, Footwear Science, 1, 1, pp. 5-17, (2009); Bonstingl R.W., Morehouse C.A., Niebel B.W., Torques developed by different types of shoes on various playing surfaces, Medicine & Science in Sports, 7, 2, pp. 127-131, (1975); Smith N., Dyson R., Janaway L., Ground reaction force measures when running in soccer boots and soccer training shoes on a natural turf surface, Sports Engineering, 7, 3, pp. 159-167, (2004); Grund T., Senner V., Traction behavior of soccer shoe stud designs under different game-relevant loading conditions, Procedia Engineering, 2, 2, pp. 2783-2788, (2010); Zarins B., Rowe C.R., Harris B.A., Watkins M.P., Rotational motion of the knee, Archives of Physical Medicine & Rehabilitation, 11, 3, pp. 152-156, (1983); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Medicine & Science in Sports & Exercise, 33, 7, pp. 1168-1175, (2001); Mclean S.G., Su A., Bogert A.J.V.D., Development and validation of a 3-d model to predict knee joint loading during dynamic movement, Journal of Biomechanical Engineering, 125, 6, pp. 864-874, (2003); Mcghie D., Ettema G., Biomechanical analysis of surface-athlete impacts on third-generation artificial turf, American Journal of Sports Medicine, 41, 1, pp. 177-185, (2013); Balazs G., Pavey G., Brelin A., Pickett A., Keblish D., Rue J., Risk of anterior cruciate ligament injury in athletes on synthetic playing surfaces: A systematic review, American Journal of Sports Medicine, 43, 7, pp. 1798-1804, (2014); Cochrane J.L., Lloyd D.G., Buttfield A., Seward H., Mcgivern J., Characteristics of anterior cruciate ligament injuries in Australian football, Journal of Science & Medicine in Sport, 10, 2, pp. 96-104, (2007); Odd O.E., Grethe M., Lars E., Roald B., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, American Journal of Sports Medicine, 32, 4, pp. 1002-1012, (2004); Chaudhari A., Andriacchi T., The mechanical consequences of dynamic frontal plane limb alignment for non-contact ACL injury, Journal of Biomechanics, 39, 2, pp. 330-338, (2006); Mclean S., Huang X., Bogert D.A., Investigating isolated neuromuscular control contributions to non-contact anterior cruciate ligament injury risk via computer simulation methods, Clinical Biomechanics, 23, 7, pp. 926-936, (2008); Morio C., Lake M.J., Gueguen N., Rao G., Baly L., The influence of footwear on foot motion during walking and running, Journal of Biomechanics, 42, 13, pp. 2081-2088, (2009); Ford K.R., Manson N.A., Evans B.J., Myer G.D., Gwin R.C., Heidt R.S., Comparison of in-shoe foot loading patterns on natural grass and synthetic turf, Journal of Science & Medicine in Sport, 9, 6, pp. 433-440, (2007); Wong P.L., Chamari K., Chaouachi A., Mao D.W., Wisloff U., Hong Y., Difference in plantar pressure between the preferred and non-preferred feet in four soccer-related movements, British Journal of Sports Medicine, 41, 2, pp. 84-92, (2007); Clercq D.D., Debuyck G., Gerlo J., Rambour S., Segers V., Caekenberghe I.V., Cutting performance wearing different studded soccer shoes on dry and wet artificial turf, Footwear Science, 6, 6, pp. 81-87, (2014); Griffin L., Agel J.M., Arendt E., Dick R., Garrett W., Garrick J., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, Journal of the American Academy of Orthopaedic Surgeons, 8, 3, pp. 141-150, (2000); Muller C., Sterzing T., Milani T., Stud length and stud geometry of soccer boots influence running performance on third generation artificial turf, ISBS-conference Proceedings Archive, 1, 1, (2009); Keijsers N., Stolwijk N., Louwerens J., Duysens J., Classification of forefoot pain based on plantar pressure measurements, Clinical Biomechanics, 28, 3, pp. 350-356, (2013); D'Ambrosia R.D., Orthotic devices in running injuries, Clinics in Sports Medicine, 4, 4, pp. 611-618, (1985); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Mclean S.G., Huang X., Su A., Sagittal plane biomechanics cannot injure the ACL during sidestep cutting, Clinical Biomechanics, 19, 8, pp. 828-838, (2004); Bentley J., Ramanathan A., Arnold G., Wang W., Abboud R., Harmful cleats of football boots: A biomechanical evaluation, Foot and Ankle Surgery, 17, 3, pp. 140-144, (2011); Malliaras P., Cook J.L., Kent P., Reduced ankle dorsiflexion range may increase the risk of patellar tendon injury among volleyball players, Journal of Science and Medicine in Sport, 9, 4, pp. 304-309, (2006); Sacco I.C., Takahasi H.Y., Suda E.Y., Battistella L.R., Kavamoto C.A., Lopes, Ground reaction force in basketball cutting maneuvers with and without ankle bracing and taping, Sao Paulo Medical Journal, 124, 5, pp. 245-252, (2006); Mei Q., Fernandez J., Fu W., Feng N., Gu Y., A comparative biomechanical analysis of habitually unshod and shod runners based on a foot morphological difference, Human Movement Science, 42, pp. 38-53, (2015); Lieberman D., Venkade M., Werbel W., Daoud A., Andrea S., Davis I., Eni R., Pitsiladis Y., Foot strike patterns and collision forces in habitually barefoot versus shod runners, Nature, 463, 7280, (2010); Grouios G., Corns and calluses in athletes' feet: A cause for concern, The Foot, 14, 4, pp. 175-184, (2004); Barry B., Milburn P., Tribology, friction and traction: Understanding shoe-surface interaction, Footwear Science, 5, 3, pp. 137-145, (2013); Alex J.Y.L., Chou J.H., Liu Y.F., Lin W.H., Shiang T.Y., Correlation between treadmill acceleration, Plantar Pressure, and Ground Reaction Force During Running, (2008)","Y. Gu; Research Academy of Grand Health Interdisciplinary, Ningbo University, China; email: guyaodongnb@aliyun.com","","Trans Tech Publications Ltd","22969837","","","","English","J. Biomimetics Biomat. Biomed. Eng.","Article","Final","","Scopus","2-s2.0-84969972364" "Montgomery M.M.; Tritsch A.J.; Cone J.R.; Schmitz R.J.; Henson R.A.; Shultz S.J.","Montgomery, Melissa M. (36608680700); Tritsch, Amanda J. (15833551400); Cone, John R. (23388237500); Schmitz, Randy J. (7102530016); Henson, Robert A. (14622483200); Shultz, Sandra J. (57206316430)","36608680700; 15833551400; 23388237500; 7102530016; 14622483200; 57206316430","The influence of lower extremity lean mass on landing biomechanics during prolonged exercise","2017","Journal of Athletic Training","52","8","","738","746","8","4","10.4085/1062-6050-52.5.03","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85027558741&doi=10.4085%2f1062-6050-52.5.03&partnerID=40&md5=f6e6f6734fb24deb3c5c5506b9a62c1c","Center for Sport Performance, Department of Kinesiology, California State University, 800 North State College Boulevard, Fullerton, 92831, CA, United States; University of South Florida, Tampa, FL, United States; Athletes Research Institute Inc, Chapel Hill, NC, United States; Departments of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, United States; Departments of Educational Research Methodology, University of North Carolina at Greensboro, Greensboro, NC, United States","Montgomery M.M., Center for Sport Performance, Department of Kinesiology, California State University, 800 North State College Boulevard, Fullerton, 92831, CA, United States; Tritsch A.J., University of South Florida, Tampa, FL, United States; Cone J.R., Athletes Research Institute Inc, Chapel Hill, NC, United States; Schmitz R.J., Departments of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, United States; Henson R.A., Departments of Educational Research Methodology, University of North Carolina at Greensboro, Greensboro, NC, United States; Shultz S.J., Departments of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, United States","Context: The extent to which lower extremity lean mass (LELM) relative to total body mass influences one's ability to maintain safe landing biomechanics during prolonged exercise when injury incidence increases is unknown. Objectives: To examine the influence of LELM on (1) preexercise lower extremity biomechanics and (2) changes in biomechanics during an intermittent exercise protocol (IEP) and (3) determine whether these relationships differ by sex. We hypothesized that less LELM would predict higher-risk baseline biomechanics and greater changes toward higher-risk biomechanics during the IEP. Design: Cohort study. Setting: Controlled laboratory. Patients or Other Participants: A total of 59 athletes (30 men: Age = 20.3 ± 2.0 years, height = 1.79 ± 0.05 m, mass = 75.2 ± 7.2 kg; 29 women: Age=20.6 ± 2.3 years, height=1.67 ± 0.08 m, mass = 61.8 ± 9.0 kg) participated. Intervention(s): Before completing an individualized 90- minute IEP designed to mimic a soccer match, participants underwent dual-energy x-ray absorptiometry testing for LELM. Main Outcome Measure(s): Three-dimensional lower extremity biomechanics were measured during drop-jump landings before the IEP and every 15 minutes thereafter. A previously reported principal components analysis reduced 40 biomechanical variables to 11 factors. Hierarchical linear modeling analysis then determined the extent to which sex and LELM predicted the baseline score and the change in each factor over time. Results: Lower extremity lean mass did not influence baseline biomechanics or the changes over time. Sex influenced the biomechanical factor representing knee loading at baseline (P = .04) and the changes in the anterior cruciate ligament-loading factor over time (P = .03). The LELM had an additional influence only on women who possessed less LELM (P = .03 and .02, respectively). Conclusions: Lower extremity lean mass influenced knee loading during landing in women but not in men. The effect appeared to be stronger in women with less LELM. Continually decreasing knee loading over time may reflect a strategy chosen to avoid injury. A minimal threshold of LELM may be needed to safely perform landing maneuvers, especially during prolonged exercise when the injury risk increases. © 2017 by the National Athletic Trainers' Association, Inc.","Anterior cruciate ligament; Body composition; Soccer","Absorptiometry, Photon; Anterior Cruciate Ligament; Athletes; Biomechanical Phenomena; Body Weights and Measures; Cohort Studies; Exercise; Female; Humans; Knee Joint; Lower Extremity; Male; Sex Factors; Soccer; Young Adult; anterior cruciate ligament; athlete; biomechanics; cohort analysis; exercise; female; human; knee; lower limb; male; morphometry; pathology; photon absorptiometry; physiology; procedures; sex factor; soccer; young adult","Uhorchak J.M., Scoville C.R., Williams G.N., Arciero R.A., St Pierre P., Taylor D.C., Risk factors associated with noncontact injury of the anterior cruciate ligament: A prospective four-year evaluation of 859 West Point cadets, Am J Sports Med, 31, 6, pp. 831-842, (2003); Loomba-Albrecht L.A., Styne D.M., Effect of puberty on body composition, Curr Opin Endocrinol Diabetes Obes, 16, 1, pp. 10-15, (2009); Montgomery M.M., Shultz S.J., Schmitz R.J., The effect of equalizing landing task demands on sex differences in lower extremity energy absorption, Clin Biomech (Bristol, Avon), 29, 7, pp. 760-766, (2014); Krosshaug T., Nakamae A., Boden B.P., Et al., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, Am J Sports Med, 35, 3, pp. 359-367, (2007); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med, 32, 4, pp. 1002-1012, (2004); Montgomery M.M., Shultz S.J., Schmitz R.J., Wideman L., Henson R.A., Influence of lean body mass and strength on landing energetics, Med Sci Sports Exerc, 44, 12, pp. 2376-2383, (2012); Fukunaga T., Miyatani M., Tachi M., Kouzaki M., Kawakami Y., Kanehisa H., Muscle volume is a major determinant of joint torque in humans, Acta Physiol Scand, 172, 4, pp. 249-255, (2001); Pollard C.D., Sigward S.M., Powers C.M., Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments, Clin Biomech (Bristol, Avon), 25, 2, pp. 142-146, (2010); Shultz S.J., Pye M.L., Montgomery M.M., Schmitz R.J., Associations between lower extremity muscle mass and multiplanar knee laxity and stiffness: A potential explanation for sex differences in frontal and transverse plane knee laxity, Am J Sports Med, 40, 12, pp. 2836-2844, (2012); Shultz S.J., Schmitz R.J., Effects of transverse and frontal plane knee laxity on hip and knee neuromechanics during drop landings, Am J Sports Med, 37, 9, pp. 1821-1830, (2009); Hawkins R.D., Hulse M.A., Wilkinson C., Hodson A., Gibson M., The association football medical research programme: An audit of injuries in professional football, Br J Sports Med, 35, 1, pp. 43-47, (2001); Junge A., Dvorak J., Graf-Baumann T., Football injuries during the World Cup 2002, Am J Sports Med, 32, pp. S23-S27, (2004); Kofotolis N.D., Kellis E., Vlachopoulos S.P., Ankle sprain injuries and risk factors in amateur soccer players during a 2-year period, Am J Sports Med, 35, 3, pp. 458-466, (2007); Silvestre R., West C., Maresh C.M., Kraemer W.J., Body composition and physical performance in men's soccer: A study of a National Collegiate Athletic Association Division i team, J Strength Cond Res, 20, 1, pp. 177-183, (2006); Bangsbo J., Iaia F.M., Krustrup P., The Yo-Yo Intermittent Recovery Test: A useful tool for evaluation of physical performance in intermittent sports, Sports Med, 38, 1, pp. 37-51, (2008); Bangsbo J., The physiology of soccer-with special reference to intense intermittent exercise, Acta Physiol Scand Suppl, 619, pp. 1-155, (1994); Bangsbo J., Norregaard L., Thorso F., Activity profile of competition soccer, Can J Sport Sci, 16, 2, pp. 110-116, (1991); Schmitz R.J., Cone J.C., Tritsch A.J., Et al., Changes in drop-jump landing biomechanics during prolonged intermittent exercise, Sports Health, 6, 2, pp. 128-135, (2014); Shultz S.J., Schmitz R.J., Cone J.R., Et al., Changes in fatigue, multiplanar knee laxity, and landing biomechanics during intermittent exercise, J Athl Train, 50, 5, pp. 486-497, (2015); Cone J.R., Berry N.T., Goldfarb A.H., Et al., Effects of an individualized soccer match simulation on vertical stiffness and impedance, J Strength Cond Res, 26, 8, pp. 2027-2036, (2012); Shultz S.J., Schmitz R.J., Cone J.R., Et al., Multiplanar knee laxity increases during a 90-min intermittent exercise protocol, Med Sci Sports Exerc, 45, 8, pp. 1553-1561, (2013); Tritsch A.J., Montgomery M.M., Cone J.C., Schmitz R.J., Shultz S.J., Effect of body composition on changes in biomechanics and performance during an exercise challenge [abstract], J Athl Train, 48, pp. S161-S162, (2013); Kipp K., McLean S.G., Palmieri-Smith R.M., Patterns of hip flexion motion predict frontal and transverse plane knee torques during a single-leg land-and-cut maneuver, Clin Biomech (Bristol, Avon), 26, 5, pp. 504-508, (2011); Decker M.J., Torry M.R., Wyland D.J., Sterett W.I., Richard Steadman J., Gender differences in lower extremity kinematics, kinetics and energy absorption during landing, Clin Biomech (Bristol, Avon), 18, 7, pp. 662-669, (2003); Schmitz R.J., Kulas A.S., Perrin D.H., Riemann B.L., Shultz S.J., Sex differences in lower extremity biomechanics during single leg landings, Clin Biomech (Bristol, Avon), 22, 6, pp. 681-688, (2007); Schmitz R.J., Shultz S.J., Contribution of knee flexor and extensor strength on sex-specific energy absorption and torsional joint stiffness during drop jumping, J Athl Train, 45, 5, pp. 445-452, (2010); Moran K.A., Wallace E.S., Eccentric loading and range of knee joint motion effects on performance enhancement in vertical jumping, Hum Mov Sci, 26, 6, pp. 824-840, (2007); Lloyd D.G., Buchanan T.S., Strategies of muscular support of varus and valgus isometric loads at the human knee, J Biomech, 34, 10, pp. 1257-1267, (2001); Greig M., Siegler J.C., Soccer-specific fatigue and eccentric hamstrings muscle strength, J Athl Train, 44, 2, pp. 180-184, (2009)","M.M. Montgomery; Center for Sport Performance, Department of Kinesiology, California State University, Fullerton, 800 North State College Boulevard, 92831, United States; email: memontgomery@fullerton.edu","","National Athletic Trainers' Association Inc.","10626050","","JATTE","28722467","English","J. Athl. Train.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-85027558741" "Gerber L.D.; Papa E.V.; Kendall E.A.","Gerber, L. Derek (57201332074); Papa, Evan V. (26433753000); Kendall, Eydie A. (57200277887)","57201332074; 26433753000; 57200277887","Biomechanical differences in knee valgus angles in collegiate female athletes participating in different sports","2019","International Journal of Kinesiology and Sports Science","7","2","","8","14","6","2","10.7575/aiac.ijkss.v.7n.2p.8","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091210699&doi=10.7575%2faiac.ijkss.v.7n.2p.8&partnerID=40&md5=1e2a0368d34b90398c601ae62386a7fb","Doctor of Physical Therapy Program, Idaho State University, 921 S. 8th Avenue Stop 8045, Pocatello, 83209, ID, United States; Doctor of Physical Therapy Program, Idaho State University-Meridian, 1311 E. Central Drive, Meridian, 83642, ID, United States; Doctor of Physical Therapy Program, Plymouth State University, 17 High Street, Plymouth, 03264, NH, United States","Gerber L.D., Doctor of Physical Therapy Program, Idaho State University, 921 S. 8th Avenue Stop 8045, Pocatello, 83209, ID, United States; Papa E.V., Doctor of Physical Therapy Program, Idaho State University-Meridian, 1311 E. Central Drive, Meridian, 83642, ID, United States; Kendall E.A., Doctor of Physical Therapy Program, Plymouth State University, 17 High Street, Plymouth, 03264, NH, United States","Background: Dynamic knee valgum is a major risk factor in ligamentous injuries of the knee. Different sports have higher rates of knee ligament injury than others and females experience knee non-contact ligament injuries at higher rates than their male counterparts. Objectives: The purpose of this study was to investigate the lower extremity biomechanics of genu valgum in female collegiate athletes of various sports while performing a drop jump test. This information may provide those designing individualized prevention programs assistance in reducing risk of knee ligamentous injury during jumping tasks. Methods: Current members of Idaho State University’s women’s basketball, soccer, and softball teams were evaluated for this study. Thirty-seven athletes participated. Motion capture reflective markers were placed bilaterally on the lower extremities to allow for analysis of knee biomechanics during a double-leg drop jump test. The angles of knee valgum in the frontal plane were calculated and analyzed between sport groups. Results: Female athletes of different sports displayed statistically significant differences in knee angles for both right, and left knees. Post hoc analysis with a Bonferroni adjustment revealed that basketball players utilized a more valgus right knee angle compared to both soccer and softball players and a more varus left knee angle compared with softball players. Conclusions: Our study suggests that collegiate-level female basketball players have an increased risk of right leg non-contact knee ligament injury during jump landing maneuvers when compared to collegiate level softball and soccer players due to increased knee valgus movements during the drop jump test. Collegiate-level female basketball players may benefit from biomechanical exercise interventions designed to decrease right knee valgus moments in jumping and landing to decrease their risk of injury. Copyright (c) the author(s). This is an open access article under CC BY license (https://creativecommons.org/licenses/by/4.0/)","Athletes; Female; Genu Valgum; Knee; Knee Injuries; Ligaments","","Agel J., Rockwood T., Klossner D., Collegiate ACL injury rates across 15 sports: National Collegiate Athletic Association Injury Surveillance System data update (2004-2005 through 2012-2013), Clinical Journal of Sport Medicine, 26, 6, pp. 518-523, (2016); Aizawa J., Hirohata K., Ohji S., Ohmi T., Yagishita K., Limb-dominance and gender differences in the ground reaction force during single-leg lateral jump-landings, Journal of Physical Therapy Science, 30, 3, pp. 387-392, (2018); Boden B. P., Sheehan F. T., Torg J. S., Hewett T. E., Non-contact ACL injuries: Mechanisms and risk factors, Journal of the American Academy of Orthopedic Surgeons, 18, 9, pp. 520-527, (2013); Brophy R., Silvers H. J., Gonzales T., Mandelbaum B. R., Gender influences: The role of leg dominance in ACL injury among soccer players, British Journal of Sports Medicine, 44, 10, pp. 694-697, (2008); Chappell J. D., Creighton R. A., Giuliani C., Yu B., Garrett W. E., Kinematics and electromyography of landing preparation in vertical stop-jump: Risks for non-contact anterior cruciate ligament injury, The American Journal of Sports Medicine, 35, 2, pp. 235-241, (2007); Chappell J. D., Limpisvasti O., Effect of a neuromuscular training program on the kinetics and kinematics of jumping tasks, The American Journal of Sports Medicine, 36, 6, pp. 1081-1086, (2008); Distefano L. J., Blackburn J. T., Marshall S. W., Padua D. A., Gluteal muscle activation during common therapeutic exercises, The Journal of Orthopaedic and Sports Physical Therapy, 39, 7, pp. 532-540, (2009); Ford K. R., Myer G. D., Hewett T. E., Valgus knee motion during landing in high school female and male basketball players, Medicine & Science in Sports & Exercise, 35, 10, pp. 1745-1750, (2003); Ford K. R., Myer G. D., Toms H. E., Hewett T. E., Gender differences in kinematics of unanticipated cutting in young athletes, Medicine & Science in Sports & Exercise, 37, 1, pp. 124-129, (2005); Gornitzky A. L., Lott A., Yellin J. L., Fabricant P. D., Lawrence J. T., Ganley T. J., Sport-specific yearly risk and incidence of anterior cruciate ligament tears in high school athletes: A systematic review and meta-analysis, The American Journal of Sports Medicine, 44, 10, pp. 2716-2723, (2016); Herrington L., Munro A., Drop jump landing knee valgus angle; normative data in physical active population, Physical Therapy in Sport, 11, 2, pp. 56-59, (2010); Hewett T. E., Ford K. R., Hoogenboom B. J., Myer G. D., Understanding and preventing ACL injuries: Current biomechanical and epidemiologic considerations – update 2010, North American Journal of Sports Physical Therapy, 5, 4, pp. 234-251, (2010); Hewett T. E., Ford K. R., Myer G. D., Anterior cruciate ligament injuries in female athletes: Part 2, a meta-analysis of neuromuscular interventions aimed at injury prevention, The American Journal of Sports Medicine, 34, 3, pp. 490-498, (2006); Hewett T. E., Myer G. D., Ford K. R., Heidt R.S., Colosimo A. J., McLean S. G., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, The American Journal of Sports Medicine, 33, 4, pp. 492-501, (2005); Hewett T. E., Paterno M. V., Myer G. D., Strategies for enhancing proprioception and neuromuscular control of the knee, Clinical Orthopaedics and Related Research, 403, pp. 76-94, (2002); Hootman J. M., Dick R., Agel J., Epidemiology of Collegiate Injuries for 15 Sports: Summary and Recommendations for Injury Prevention Initiatives, Journal of Athletic Training, 42, 2, pp. 311-319, (2007); Hutchinson M. R., Ireland M. L., Knee injuries in female athletes, Sports Medicine, 19, 4, pp. 288-302, (1995); Jackson K. M., Beach T. A. C., Andrews D. M., The effect of an isometric hip muscle strength training protocol on valgus angle during a drop vertical jump in competitive female volleyball players, International Journal of Kinesiology and Sports Science, 5, 4, pp. 1-9, (2017); Johnson T. M., Brown L. E., Coburn J. W., Judelson D. A., Khamoui A. V., Tran T. T., Uribe B. P., Effect of four different starting stances on sprint time in collegiate volleyball players, The Journal of Strength & Conditioning Research, 24, 10, pp. 2641-2646, (2010); Joseph A. M., Collins C. L., Henke N. M., Yard E. E., Fields S. K., Comstock R. D., A multisport epidemiologic comparison of anterior cruciate ligament injuries in high school athletics, Journal of Athletic Training, 48, 6, pp. 810-817, (2013); Kay M. C., Register-Mihalik J. K., Gray A. D., Djoko A., Dompier T. P., Kerr Z. Y., The Epidemiology of Severe Injuries Sustained by National Collegiate Athletic Association Student-Athletes, 2009–2010 Through 2014–2015, Journal of Athletic Training, 52, 2, pp. 117-128, (2017); Lam K. C., McLeod V., Tamara C., The impact of sex and knee injury history on jump-landing patterns in collegiate athletes: A clinical evaluation, Clinical Journal of Sport Medicine, 24, 5, pp. 373-379, (2014); Magee D. Knee, Knee. Orthopedic Physical Assessment, pp. 765-859, (2014); Mandelbaum B. R., Silvers H. J., Watanabe D. S., Knarr J. F., Thomas S. D., Griffin L. Y., Garrett W., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes: 2-year follow-up, The American Journal of Sports Medicine, 33, pp. 1003-1010, (2005); Mizner R. L., Kawaguchi J. K., Chmielewski T. L., Muscle strength in the lower extremity does not predict postinstruction improvements in the landing patterns of female athletes, The Journal of Orthopaedic and Sports Physical Therapy, 38, 6, pp. 353-361, (2008); Mokhtarzadeh H., Ewing K., Janssen I., Yeow C. H., Brown N., Lee P. V. S., The effect of leg dominance and landing height on ACL loading among female athletes, Journal of Biomechanics, 60, pp. 181-187, (2017); Munro A., Herrington L., Comfort P., Comparison of landing knee valgus angle between female basketball and football athletes: Possible implications for anterior cruciate ligament and patellofemoral joint injury rates, Physical Therapy in Sport, 13, 4, pp. 259-264, (2012); Myer G. D., Ford K. R., Khoury J., Succop P., Hewett T. E., Development and validation of a clinic- based prediction tool to identify female athletes at high risk for anterior cruciate ligament injury, The American Journal of Sports Medicine, 38, 10, pp. 2025-2033, (2010); Nilstad A., Krosshaug T., Mok K. M., Bahr R., Andersen T. E., Association between anatomical characteristics, knee laxity, muscle strength, and peak knee valgus during vertical drop-jump landings, Journal of Orthopaedic and Sports Physical Therapy, 45, 12, pp. 998-1005, (2015); Noyes F. R., Barber-Westin S. D., Fleckenstein C., Walsh C., West J., The drop-jump screening test: Difference in lower limb control by gender and effect of neuromuscular training in female athletes, The American Journal of Sports Medicine, 33, 2, pp. 197-207, (2005); Numata H., Nakase J., Kitaoka K., Shima Y., Oshima T., Takata Y., Tsuchiya H., Two-dimensional motion analysis of dynamic knee valgus identifies female high school athletes at risk of non-contact anterior cruciate ligament injury, Knee Surgery, Sports Traumatology, Arthroscopy, 26, 2, pp. 442-447, (2018); Okazaki V. H. A., Rodacki A. L. F., Satern M. N., A review on the basketball jump shot, Sports Biomechanics, 14, 2, pp. 190-205, (2015); Padua D. A., DiStefano L. J., Hewett T. E., Garrett W. E., Marshall S. W., Golden G. M., Sigward S. M., National Athletic Trainers’ Association position statement: Prevention of anterior cruciate ligament injury, Journal of Athletic Training, 53, 1, pp. 5-19, (2018); Pollard C. D., Sigward S. M., Ota S., Langford K., Powers C. M., The influence of in-season injury prevention training on lower-extremity kinematics during landing in female soccer players, Clinical Journal of Sport Medicine, 16, 3, pp. 223-227, (2006); Pollard C. D., Sigward S. M., Powers C. M., Limited hip and knee flexion during landing is associated increased frontal plane knee motion and moments, Clinical Biomechanics (Bristol, Avon), 25, pp. 142-146, (2010); Tate J. J., Milner C. E., Fairbrother J. T., Zhang S., The effects of a home-based instructional program aimed at improving frontal plane knee biomechanics during a jump-landing task, Journal of Orthopaedic and Sports Physical Therapy, 43, 7, pp. 486-494, (2013); Taylor J. B., Ford K. R., Schmitz R. J., Ross S. E., Ackerman T. A., Shultz S. J., Biomechanical differences of multidirectional jump landings among female basketball and soccer players, The Journal of Strength & Conditioning Research, 31, 11, pp. 3034-3045, (2017)","L.D. Gerber; Doctor of Physical Therapy Program, Idaho State University, Pocatello, 921 S. 8th Avenue Stop 8045, 83209, United States; email: gerblanc@isu.edu","","Australian International Academic Centre PTY LTD","2202946X","","","","English","Int. J. Kinesiol. Sports Sci.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85091210699" "Nuccio S.; Labanca L.; Rocchi J.E.; Macaluso A.; Sbriccoli P.","Nuccio, Stefano (57202132063); Labanca, Luciana (56146778700); Rocchi, Jacopo Emanuele (57188699921); Macaluso, Andrea (7003418876); Sbriccoli, Paola (6602268033)","57202132063; 56146778700; 57188699921; 7003418876; 6602268033","Neuromechanical response to passive cyclic loading of the ACL in non-professional soccer players: A pilot study","2018","Physical Therapy in Sport","32","","","187","193","6","4","10.1016/j.ptsp.2018.05.013","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85047258322&doi=10.1016%2fj.ptsp.2018.05.013&partnerID=40&md5=5b0bb41f933a5d3f3792846d4a7f7029","Department of Movement, Human and Health Sciences University of Rome “Foro Italico”, Rome, Italy; Villa Stuart Sport Clinic-FIFA Medical Centre of Excellence, Rome, Italy","Nuccio S., Department of Movement, Human and Health Sciences University of Rome “Foro Italico”, Rome, Italy; Labanca L., Department of Movement, Human and Health Sciences University of Rome “Foro Italico”, Rome, Italy; Rocchi J.E., Department of Movement, Human and Health Sciences University of Rome “Foro Italico”, Rome, Italy, Villa Stuart Sport Clinic-FIFA Medical Centre of Excellence, Rome, Italy; Macaluso A., Department of Movement, Human and Health Sciences University of Rome “Foro Italico”, Rome, Italy, Villa Stuart Sport Clinic-FIFA Medical Centre of Excellence, Rome, Italy; Sbriccoli P., Department of Movement, Human and Health Sciences University of Rome “Foro Italico”, Rome, Italy","Objective: To investigate the effects of passive cyclic loading (CYC) on anterior tibial translation (ATT), knee extensor and flexor muscle strength and activation in soccer players. Design: Cross-sectional study. Setting: Functional Assessment Laboratory; Participants: Eight healthy competitive soccer players. Interventions: The knee of the dominant limb was subjected to 10 min of CYC at 200 N force. Main outcomes measures: ATT was measured before and after CYC. Percentage of variation was used to estimate ACL creep. Knee extension and flexion maximal voluntary contractions (MVCs) were assessed both before and after CYC. EMG amplitudes of both Biceps Femoris (BF) and Vastus Lateralis (VL) were recorded during both MVCs and CYC. Results: There was a 20.7% increase in ATT after CYC application (p<0.001). Post-CYC agonist and antagonist BF activations were 37.7% and 18.4% lower than pre-CYC ones during MVCs (p<0.05). BF EMG activity in the last 30s of CYC was 19.9% higher than in the first 30s (p<0.05). Conclusion: The increased ATT and the variations in neuromuscular activation of the BF in response to loading may expose the knee at higher injury risk by increasing joint instability. Further studies are required to thoroughly investigate these aspects in both laboratory and real-field settings. © 2018","EMG; Functional stability; Injury prevention; Knee laxity","Adult; Biomechanical Phenomena; Cross-Sectional Studies; Electromyography; Humans; Joint Instability; Knee Joint; Male; Muscle Contraction; Muscle Strength; Muscle, Skeletal; Pilot Projects; Soccer; Young Adult; adult; anterior cruciate ligament; anterior cruciate ligament injury; anterior tibial translation; Article; biceps femoris muscle; biomechanics; cross-sectional study; electromyogram; extensor muscle; flexor muscle; human; human experiment; knee; knee function; knee instability; male; maximal voluntary contraction; muscle contraction; muscle strength; musculoskeletal procedure; musculoskeletal system parameters; neuromuscular function; normal human; passive cyclic loading; pilot study; priority journal; risk factor; soccer player; vastus lateralis muscle; young adult; biomechanics; electromyography; joint instability; muscle strength; pathophysiology; physiology; skeletal muscle; soccer","Aagaard P., Simonsen E.B., Andersen J.L., Magnusson S.P., Bojsen-Moller F., Dyhre-Poulsen P., Et al., Antagonist muscle coactivation during isokinetic knee extension, Scandinavian Journal of Medicine & Science in Sports, 10, pp. 58-67, (2000); Baumgart C., Gokeler A., Donath L., Hoppe M.W., Freiwald J., Et al., Effects of static stretching and playing soccer on knee laxity, Clinical Journal of Sport Medicine, 25, 6, pp. 541-545, (2015); Chu D., LeBlanc R., D'Ambrosia P., D'Ambrosia R., Baratta R.V., Solomonow M., Et al., Neuromuscular disorder in response to anterior cruciate ligament creep, Clinical biomechanics, 18, pp. 222-230, (2003); Cohen J., Statistical power analysis for the behavioral sciences, (1988); Collette M., Courville J., Forton M., Gagniere B., Objective evaluation of anterior knee laxity; comparison of the KT-1000 and GNRB arthrometers, Knee Surgery, Sports Traumatology, Arthroscopy, 20, pp. 2233-2238, (2012); Dyhre-Poulsen P., Krogsgaard M.R., Muscular reflexes elicited by electrical stimulation of the anterior cruciate ligament in humans, Journal of Applied Physiology, 89, 6, pp. 2191-2195, (2000); Fousekis K., Tsepis E., Vagenas G., Lower limb strength in professional soccer players: Profile, asymmetry, and training age, Journal of Sports Science and Medicine, 9, 3, pp. 364-373, (2010); Griffin L.Y., Agel J., Albohm M.J., Arendt E.A., Dick R.W., Garrett W.E., Et al., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, Journal of the American Academy of Orthopaedic Surgeons, 8, pp. 141-150, (2000); Griffin L.Y., Albohm M.J., Arendt E.A., Bahr R., Beynnon B.D., Demaio M., Et al., Understanding and preventing noncontact anterior cruciate ligament injuries: A review of the hunt valley ii meeting, The American Journal of Sports Medicine, 2006, 34, pp. 1512-1532, (2006); Hermens H.J., Freriks B., Disselhorst-Klug C., Rau G., Et al., Development of recommendations for SEMG sensors and sensor placement procedures, Journal of Electromyography and Kinesiology, 10, 5, pp. 361-374, (2000); Hootman J., Dick R., Agel J., Epidemiology of collegiate injuries for 15 sports: Summary and recommendations for injury prevention initiatives, Journal of Athletic Training, 42, 2, pp. 311-319, (2007); Jenny J.Y., Puliero B., Schockmel G., Harnoist S., Clavert P., Et al., Experimental validation of the GNRB® for measuring anterior tibial translation, Orthop Traumatol Surg Res., 103, 3, pp. 363-366, (2017); Kirkley A., Mohtadi N., Ogilvie R., The effect of exercise on anterior-posterior translation of the normal knee and knees with deficient or reconstructed anterior cruciate ligaments, The American Journal of Sports Medicine, 29, 3, pp. 311-314, (2001); Krogsgaard M.R., Dyhre-Poulsen P., Fischer-Rasmussen T., Cruciate ligament reflexes, Journal of Electromyography and Kinesiology, 12, 3, pp. 177-182, (2002); Labanca L., Laudani L., Casabona A., Menotti F., Mariani P.P., Macaluso A., Early compensatory and anticipatory postural adjustments following anterior cruciate ligament reconstruction, European Journal of Applied Physiology, 115, pp. 1441-1451, (2015); Macaluso A., De Vito G., Comparison between young and older women in explosive power output and its determinants during a single leg-press action after optimisation of load, European Journal of Applied Physiology, 90, pp. 458-463, (2003); Maly T., Zahalka F., Mala L., Muscular strength and strength asymmetries in elite and sub-elite professional soccer players, Sport Science, 7, 1, pp. 26-33, (2014); Mouton C., Seil R., Meyer T., Agostinis H., Theisen D., Et al., Combined anterior and rotational laxity measurements allow characterizing personal knee laxity profiles in healthy individuals, Knee Surgery, Sports Traumatology, Arthroscopy, 23, 12, pp. 3571-3577, (2015); Myer G.D., Ford K.R., Paterno M.V., Nick T.G., Hewett T.E., The effects of generalized joint laxity on risk of anterior cruciate ligament injury in young female athletes, The American Journal of Sports Medicine, 36, pp. 1073-1080, (2008); Nawata K., Teshima R., Morio Y., Hagino H., Enokida M., Yamamoto K., Anterior-posterior knee laxity increased by exercise, Acta Orthopaedica Scandinavica, 70, 3, pp. 261-264, (1999); Needle A.R., Baumeister J., Kaminski T.W., Higginson J.S., Farquhar W.B., Swanik C.B., Et al., Neuromechanical coupling in the regulation of muscle tone and joint stiffness, Scandinavian Journal of Medicine & Science in Sports, 24, 5, pp. 737-748, (2014); Pederson H., Blunk C., Gardner E., The anatomy of lumborsacral posterior rami and meningeal branches of spinal nerves, Journal of Bone and Joint Surgery, 38A, pp. 377-391, (1956); Robert H., Nouveau S., Gageot S., Gagniere B., A new knee arthrometer, the GNRB®: Experience in ACL complete and partial tears, Orthop Traumatol Surg Res., 95, 3, pp. 171-176, (2009); Sbriccoli P., Solomonow M., Zhou B.-H., Lu Y., Sellards R., Neuromuscular response to cyclic loading of the anterior cruciate ligament, The American Journal of Sports Medicine, 33, (2005); Sell T.C., Ferris C.M., Abt J.P., Tsai Y.S., Myers J.B., Fu F.H., Et al., Predictors of proximal tibia anterior shear force during a vertical stop-jump, Journal of Orthopaedic Research, 25, 12, pp. 1589-1597, (2007); Shultz S.J., Carcia C.R., Perrin D.H., Knee joint laxity affects muscle activation patterns in the healthy knee, Journal of Electromyography and Kinesiology, 14, pp. 475-483, (2004); Shultz S.J., Schmitz R.J., Cone J.R., Henson R.A., Montgomery M.M., Pye M.L., Et al., Changes in fatigue, multiplanar knee laxity, and landing biomechanics during intermittent exercise, Journal of Athletic Training, 50, 5, pp. 486-497, (2015); Sjolander P., Johansson H., Djupsjobacka M., Spinal and supraspinal effects of activity in ligament afferents, Journal of Electromyography and Kinesiology, 12, pp. 167-176, (2002); Solomonow M., Baratta R., Zhou B.H., Shoji H., Bose W., Beck C., Et al., Ligaments: A source of work-related musculoskeletal disorder, Journal of Electromyography and Kinesiology, 14, pp. 49-60, (2004); Solomonow M., Sensory–motor control of ligaments and associated neuromuscular disorders, Journal of Electromyography and Kinesiology, 16, pp. 549-567, (2006); Solomonow M., Baratta R.V., Zhou B.H., Et al., The synergistic action of the ACL and thigh muscles in maintaining joint stability, The American Journal of Sports Medicine, 15, pp. 20-213, (1987); Solomonow M., Krogsgaard M., Sensorimotor control of knee stability. A review, Scandinavian Journal of Medicine & Science in Sports, 11, pp. 64-80, (2001); Tsuda E., Okamura Y., Otsuka H., Komatsu T., Tokuya S., Et al., Direct evidence of the anterior cruciate ligament-hamstring reflex arc in humans, The American Journal of Sports Medicine, 29, 1, pp. 83-87, (2001); Uhorchak J.M., Scoville C.R., Williams G.N., Arciero R.A., Pierre P.S., Taylor D.C., Et al., Risk factors associated with noncontact injury of the anterior cruciate ligament a prospective four-year evaluation of 859 west point cadets, The American Journal of Sports Medicine, 31, pp. 831-842, (2003); Walden M., Hagglund M., Magnusson H., Ekstrand J., Anterior cruciate ligament injury in elite football: A prospective three-cohort study, Knee Surgery, Sports Traumatology, Arthroscopy, 19, 1, pp. 11-19, (2011); Waxman J.P., Shultz S.J., The relationship between hamstring and leg musculo-articular stiffness, Journal of Athletic Training, 50, 10, pp. 1106-1107, (2015); Woo S.L., Abramowitch S.D., Kilger R., Liang R., Biomechanics of knee ligaments: Injury, healing, and repair, Journal of Biomechanics, 39, 1, pp. 1-20, (2006); Woodford-Rogers B., Cyphert L., Denegar C.R., Risk factors for anterior cruciate ligament injury in high school and college athletes, Journal of Athletic Training, 29, 4, (1994); Wren T.A., Beaupre G.S., Carter D.R., Tendon and ligament adaptation to exercise, immobilization, and remobilization, Journal of Rehabilitation Research and Development, 37, 2, (2000)","P. Sbriccoli; Department of Movement, Human and Health Sciences University of Rome “Foro Italico”, Rome, Piazza Lauro de Bosis 6, I- 00135, Italy; email: paola.sbriccoli@uniroma4.it","","Churchill Livingstone","1466853X","","PTSHB","29803125","English","Phys. Ther. Sport","Article","Final","","Scopus","2-s2.0-85047258322" "Ferrández-Laliena L.; Vicente-Pina L.; Sánchez-Rodríguez R.; Orantes-González E.; Heredia-Jimenez J.; Lucha-López M.O.; Hidalgo-García C.; Tricás-Moreno J.M.","Ferrández-Laliena, Loreto (58135892500); Vicente-Pina, Lucía (58136316700); Sánchez-Rodríguez, Rocío (58135681400); Orantes-González, Eva (56695171300); Heredia-Jimenez, José (57219387593); Lucha-López, María Orosia (23012856500); Hidalgo-García, César (22134893700); Tricás-Moreno, José Miguel (22136695800)","58135892500; 58136316700; 58135681400; 56695171300; 57219387593; 23012856500; 22134893700; 22136695800","Diagnostics Using the Change-of-Direction and Acceleration Test (CODAT) of the Biomechanical Patterns Associated with Knee Injury in Female Futsal Players: A Cross-Sectional Analytical Study","2023","Diagnostics","13","5","928","","","","2","10.3390/diagnostics13050928","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85149744971&doi=10.3390%2fdiagnostics13050928&partnerID=40&md5=bddd19d89cec42884b59fd8a37c9fefd","Unidad de Investigación en Fisioterapia, Spin off Centro Clínico OMT-E Fisioterapia SLP, Universidad de Zaragoza, Domingo Miral s/n, Zaragoza, 50009, Spain; Department of Sports and Computer Science, Faculty of Physical Education and Sports, University of Pablo de Olavide, Sevilla, 41013, Spain; Department of Physical Education and Sports, Faculty of Education, Economy & Technology, University of Granada, Ceuta, 51001, Spain","Ferrández-Laliena L., Unidad de Investigación en Fisioterapia, Spin off Centro Clínico OMT-E Fisioterapia SLP, Universidad de Zaragoza, Domingo Miral s/n, Zaragoza, 50009, Spain; Vicente-Pina L., Unidad de Investigación en Fisioterapia, Spin off Centro Clínico OMT-E Fisioterapia SLP, Universidad de Zaragoza, Domingo Miral s/n, Zaragoza, 50009, Spain; Sánchez-Rodríguez R., Unidad de Investigación en Fisioterapia, Spin off Centro Clínico OMT-E Fisioterapia SLP, Universidad de Zaragoza, Domingo Miral s/n, Zaragoza, 50009, Spain; Orantes-González E., Department of Sports and Computer Science, Faculty of Physical Education and Sports, University of Pablo de Olavide, Sevilla, 41013, Spain; Heredia-Jimenez J., Department of Physical Education and Sports, Faculty of Education, Economy & Technology, University of Granada, Ceuta, 51001, Spain; Lucha-López M.O., Unidad de Investigación en Fisioterapia, Spin off Centro Clínico OMT-E Fisioterapia SLP, Universidad de Zaragoza, Domingo Miral s/n, Zaragoza, 50009, Spain; Hidalgo-García C., Unidad de Investigación en Fisioterapia, Spin off Centro Clínico OMT-E Fisioterapia SLP, Universidad de Zaragoza, Domingo Miral s/n, Zaragoza, 50009, Spain; Tricás-Moreno J.M., Unidad de Investigación en Fisioterapia, Spin off Centro Clínico OMT-E Fisioterapia SLP, Universidad de Zaragoza, Domingo Miral s/n, Zaragoza, 50009, Spain","The primary aim of this study was to identify kinematic differences at initial contact between female futsal players with and without previous knee injury, using a functional motor pattern test. The secondary aim was to determine kinematic differences between the dominant and non-dominant limb in the whole group, using the same test. A cross-sectional study was performed in 16 female futsal players allocated into two groups: eight females with a previous knee injury, i.e., affected by the valgus collapse mechanism without surgical intervention, and eight with no previous injury. The evaluation protocol included the change-of-direction and acceleration test (CODAT). One registration was made for each lower limb, i.e., the dominant (the preferred kicking limb) and non-dominant limb. A 3D motion capture system (Qualisys AB, Göteborg, Sweden) was used to analyze the kinematics. The Cohen’s d effect sizes between the groups demonstrated a strong effect size towards more physiological positions in the non-injured group in the following kinematics in the dominant limb: hip adduction (Cohen’s d = 0.82), hip internal rotation (Cohen’s d = 0.88), and ipsilateral pelvis rotation (Cohen’s d = 1.06). The t-test for the dominant and non-dominant limb in the whole group showed the following differences in knee valgus: dominant limb (9.02 ± 7.31 degrees) and non-dominant limb (1.27 ± 9.05 degrees) (p = 0.049). Conclusions: The players with no previous history of knee injury had a more physiological position for avoiding the valgus collapse mechanism in the hip adduction and internal rotation, and in the pelvis rotation in the dominant limb. All the players showed more knee valgus in the dominant limb, which is the limb at greater risk of injury. © 2023 by the authors.","anterior cruciate ligament; CODAT; kinematics; knee injury; physiotherapy; prevention; soccer; sports","abduction; adduction; adult; Article; assessment of humans; athlete; change of direction and acceleration test; clinical article; controlled study; cross-sectional study; female; follow up; gait; hip; human; joint mobility; kinematics; knee injury; lower limb; outcome variable; pelvis; valgus knee; young adult","Ruiz-Perez I., Lopez-Valenciano A., Jimenez-Loaisa A., Elvira J.L.L., de Ste Croix M., Ayala F., Injury incidence, characteristics and burden among female sub-elite futsal players: A prospective study with three-year follow-up, PeerJ, 7, (2019); Olivares-Jabalera J., Filter-Ruger A., Dos'Santos T., Afonso J., della Villa F., Morente-Sanchez J., Soto-Hermoso V.M., Requena B., Exercise-Based Training Strategies to Reduce the Incidence or Mitigate the Risk Factors of Anterior Cruciate Ligament Injury in Adult Football (Soccer) Players: A Systematic Review, Int. 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Ther, 15, pp. 928-935, (2020); Krosshaug T., Slauterbeck J.R., Engebretsen L., Bahr R., Biomechanical analysis of anterior cruciate ligament injury mechanisms: Three-dimensional motion reconstruction from video sequences, Scand. J. Med. Sci. Sports, 17, pp. 508-519, (2007); Taylor J.B., Ford K.R., Nguyen A.-D., Shultz S.J., Biomechanical Comparison of Single- and Double-Leg Jump Landings in the Sagittal and Frontal Plane, Orthop. J. Sports Med, 4, (2016); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Russo K.A., The Effect of Technique Change on Knee Loads during Sidestep Cutting, Med. Sci. Sports Exerc, 39, pp. 1765-1773, (2007); Critchley M.L., Davis D.J., Keener M.M., Layer J.S., Wilson M.A., Zhu Q., Dai B., The effects of mid-flight whole-body and trunk rotation on landing mechanics: Implications for anterior cruciate ligament injuries, Sports Biomech, 19, pp. 421-437, (2019)","M.O. Lucha-López; Unidad de Investigación en Fisioterapia, Spin off Centro Clínico OMT-E Fisioterapia SLP, Universidad de Zaragoza, Zaragoza, Domingo Miral s/n, 50009, Spain; email: orolucha@unizar.es; C. Hidalgo-García; Unidad de Investigación en Fisioterapia, Spin off Centro Clínico OMT-E Fisioterapia SLP, Universidad de Zaragoza, Zaragoza, Domingo Miral s/n, 50009, Spain; email: hidalgo@unizar.es","","Multidisciplinary Digital Publishing Institute (MDPI)","20754418","","","","English","Diagn.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85149744971" "Larson J.; Perkins E.; Oldfather T.; Zabala M.","Larson, Jacob (57224318854); Perkins, Edmon (55389193400); Oldfather, Taylor (57223922930); Zabala, Michael (55445917700)","57224318854; 55389193400; 57223922930; 55445917700","Local dynamic stability of the lower-limb as a means of post-hoc injury classification","2021","PLoS ONE","16","6 June","e0252839","","","","3","10.1371/journal.pone.0252839","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107372035&doi=10.1371%2fjournal.pone.0252839&partnerID=40&md5=73a0052df26458e828d0fbd32502c82d","Department of Mechanical Engineering, Auburn University, Auburn, AL, United States; Department of Mechanical & Aerospace Engineering, North Carolina State University, Raleigh, NC, United States","Larson J., Department of Mechanical Engineering, Auburn University, Auburn, AL, United States; Perkins E., Department of Mechanical & Aerospace Engineering, North Carolina State University, Raleigh, NC, United States; Oldfather T., Department of Mechanical Engineering, Auburn University, Auburn, AL, United States; Zabala M., Department of Mechanical Engineering, Auburn University, Auburn, AL, United States","Since most sporting injuries occur at the lower extremity (50% to 66%) and many of those injuries occur at the knee (30% to 45%), it is important to have robust metrics to measure risk of knee injury. Dynamic measures of knee stability are not commonly used in existing metrics but could provide important context to knee health and improve injury screening effectiveness. This study used the Local Dynamic Stability (LDS) of knee kinematics during a repetitive vertical jump to perform a post-hoc previous injury classification of participants. This study analyzed the kinematics from twenty-seven female collegiate division 1 (D1) soccer, D1 basketball, and club soccer athletes from Auburn University (height = 171 ± 8.9cm, weight = 66.3 ± 8.6kg, age = 19.8 ± 1.9yr), with 7 subjects having sustained previous knee injury requiring surgery and 20 subjects with no history of injury. This study showed that LDS correctly identified 84% of previously injured and uninjured subjects using a multivariate logistic regression during a fatigue jump task. Findings showed no statistical difference in kinematic position at maximum knee flexion during all jumps between previously injured and uninjured subjects. Additionally, kinematic positioning at maximum knee flexion was not indicative of LDS values, which would indicate that future studies should look specifically at LDS with respect to injury prevention as it cannot be effectively inferred from kinematics. These points suggest that the LDS preserves information about subtle changes in movement patterns that traditional screening methods do not, and this information could allow for more effective injury screening tests in the future. Copyright: © 2021 Larson et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.","","Adult; Anterior Cruciate Ligament Injuries; Athletes; Basketball; Biomechanical Phenomena; Female; Humans; Lower Extremity; Soccer; Young Adult; adult; anterior cruciate ligament; Article; basketball; clinical article; controlled study; fatigue; female; human; incidence; kinematics; knee function; knee injury; knee instability; leg injury; lower limb; multivariate logistic regression analysis; post hoc analysis; quality of life; risk assessment; screening test; soccer; sport injury; student athlete; anterior cruciate ligament injury; athlete; biomechanics; classification; injury; lower limb; pathology; pathophysiology; young adult","Herzog MM, Marshall SW, Lund JL, Pate V, Spang JT., Cost of outpatient arthroscopic anterior cruciate ligament reconstruction among commercially insured patients in the United States, 2005-2013, Orthopaedic journal of sports medicine, 5, 1, (2017); Palsis JA, Brehmer TS, Pellegrini VD, Drew JM, Sachs BL., The cost of joint replacement: comparing two approaches to evaluating costs of total hip and knee arthroplasty, The Journal of Bone and Joint Surgery, 100, 4, pp. 326-333, (2018); Lie MM, Risberg MA, Storheim K, Engebretsen L, Oiestad BE., What’s the rate of knee osteoarthritis 10 years after anterior cruciate ligament injury? 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Larson; Department of Mechanical Engineering, Auburn University, Auburn, United States; email: jsl0043@auburn.edu","","Public Library of Science","19326203","","POLNC","34086814","English","PLoS ONE","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85107372035" "Perkins R.A.; Bakhtiarydavijani A.; Ivanoff A.E.; Jones M.; Hammi Y.; Prabhu R.K.","Perkins, Richard A. (57842070900); Bakhtiarydavijani, Amirhamed (55990456100); Ivanoff, Athena E. (57842369100); Jones, Michael (55491028600); Hammi, Youssef (6506217389); Prabhu, Raj K. (55815917500)","57842070900; 55990456100; 57842369100; 55491028600; 6506217389; 55815917500","Assessment of brain injury biomechanics in soccer heading using finite element analysis","2022","Brain Multiphysics","3","","100052","","","","3","10.1016/j.brain.2022.100052","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85135848859&doi=10.1016%2fj.brain.2022.100052&partnerID=40&md5=2ea06db5600e1e4ce08034af6c944860","Universities Space Research Association, Cleveland, OH, United States; Center for Advanced Vehicular Systems, Mississippi State University, Starkville, MS, United States; Department of Mechanical Engineering, Mississippi State University, Starkville, MS, United States; Institute of Medical Engineering & Medical Physics, Cardiff University, Wales, Cardiff, United Kingdom","Perkins R.A., Universities Space Research Association, Cleveland, OH, United States; Bakhtiarydavijani A., Center for Advanced Vehicular Systems, Mississippi State University, Starkville, MS, United States; Ivanoff A.E., Universities Space Research Association, Cleveland, OH, United States; Jones M., Institute of Medical Engineering & Medical Physics, Cardiff University, Wales, Cardiff, United Kingdom; Hammi Y., Center for Advanced Vehicular Systems, Mississippi State University, Starkville, MS, United States, Department of Mechanical Engineering, Mississippi State University, Starkville, MS, United States; Prabhu R.K., Universities Space Research Association, Cleveland, OH, United States","This study presents an in silico finite element (FE) model-based biomechanical analysis of brain injury metrics and associated risks of a soccer ball impact to the head for aware and unaware athletes, considering ball impact velocity and direction. The analysis presented herein implements a validated soccer ball and 50th percentile human head computational FE model for quantifying traumatic brain injury (TBI) metrics. The brain's mechanical properties are designated using a viscoelastic-viscoplastic constitutive material model for the white and gray matter within the human head FE model. FE results show a dynamic human head-soccer ball peak contact area of approximately seven times greater than those documented for helmet-to-helmet hits in American Football. Due to the deformable nature of the soccer ball, the impact dynamics are unique depending on the location and velocity of impact. TBI injury risks also depend on the location of impact and the impact velocity. Impacts to the rear (BrIC:0.48, HIC15:180.7), side (BrIC:0.52, HIC15:176.5), and front (BrIC:0.37, HIC15:129.0) are associated with the highest injury risks. Furthermore, the FE results indicate when an athlete is aware of an incoming ball, HIC15-based Abbreviated Injury Scale 1 (AIS 1) injury risks for the front, side, and rear impacts decrease from 10.5%, 18.5%, and 19.3%, respectively, to approximately 1% in front and side impacts and under 6% in a rear impact. Lastly, the unique contact area between the head and soccer ball produces pressure gradients in the ball that translate into distinguishable stress waves in the skull and the cerebral cortex. © 2022","Biomechanical analysis; Finite element; Injury mechanics; Mild traumatic brain injury; Soccer headings","","Hubertus V., Marklund N., Vajkoczy P., Management of concussion in soccer, Acta Neurochir., 161, 3, pp. 425-433, (2019); Deprez D., Fransen J., Boone J., Lenoir M., Philippaerts R., Vaeyens R., Characteristics of high-level youth soccer players: variation by playing position, J. 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Bakhtiarydavijani; Research Engineer II, Center for Advanced Vehicular Systems, 200 Research.; email: hamed@cavs.msstate.edu","","Elsevier B.V.","26665220","","","","English","Brain Multiphysics","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85135848859" "Cigoja S.; Vienneau J.; Nigg S.R.; Nigg B.M.","Cigoja, Sasa (57204950675); Vienneau, Jordyn (55233829900); Nigg, Sandro R. (55233556900); Nigg, Benno M. (7004977485)","57204950675; 55233829900; 55233556900; 7004977485","The effects of midsole bending stiffness on ball speed during maximum effort soccer kicks","2019","Footwear Science","11","3","","153","160","7","2","10.1080/19424280.2018.1538263","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85058072709&doi=10.1080%2f19424280.2018.1538263&partnerID=40&md5=59d4ba641c747a4c9514d079f28253f2","Human Performance Laboratory Faculty of Kinesiology, University of Calgary, Calgary, Canada","Cigoja S., Human Performance Laboratory Faculty of Kinesiology, University of Calgary, Calgary, Canada; Vienneau J., Human Performance Laboratory Faculty of Kinesiology, University of Calgary, Calgary, Canada; Nigg S.R., Human Performance Laboratory Faculty of Kinesiology, University of Calgary, Calgary, Canada; Nigg B.M., Human Performance Laboratory Faculty of Kinesiology, University of Calgary, Calgary, Canada","The soccer kick is the most prominent movement in soccer. Kicking performance depends on two major factors: kicking accuracy and ball speed. During the soccer kick, momentum is transferred from the foot/cleat to the ball. This interplay between the foot/cleat and the ball can be modelled as a mixture of ‘impulse-like’ and ‘throwing-like’ components. While kicking the ball, the metatarsophalangeal (MTP) joint and the cleat experience deformation. This deformation can be reduced by increasing the bending stiffness of the cleat’s midsole. Therefore, the purpose of this study was to investigate experimentally the influence of midsole bending stiffness on ball speed during maximum effort soccer kicks. Twenty male subjects (mean ± SD; age: 29.5 ± 5.6 years, height: 175.5 ± 6.4 cm, mass: 74.3 ± 8.4 kg) performed six maximum effort soccer kicks in five stiffness conditions. Kinematic data were collected using an optical motion capture system consisting of eight high-speed cameras, and ball speed was recorded using a radar gun. There was no significant difference in the average ball speed between the five stiffness conditions when all subjects were pooled. Further, there was no significant difference in the change of the MTP joint angle from before ball contact to after ball contact between the stiffness configurations. Thirteen (of the 20) subjects showed the highest ball speed in the two stiffest cleats. The differences between the best and the worst performing stiffness configurations across all subjects ranged from 2.2 km/h to 9.2 km/h. The optimal stiffness condition that resulted in highest ball speed was subject specific, and therefore soccer cleats need to be tuned to individual players. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.","biomechanics; cleats; footwear; performance; soccer","Bending (deformation); Biomechanics; High speed cameras; Speed; Stiffness; Bending stiffness; cleats; footwear; Kinematic data; Optical motion capture; performance; Stiffness conditions; Subject-specific; Football","Barfield W.R., The biomechanics of kicking in soccer, Clinics in Sports Medicine, 17, 4, pp. 711-728, (1998); Hennig E.M., Sterzing T., The influence of soccer shoe design on playing performance : A series of biomechanical studies, Footwear Science, 2, pp. 3-11, (2010); Hennig E.M., Zulbeck O., (1999); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, 3, pp. 211-234, (1998); Lupescu I., Turner G., (2016); MacKenzie S.J., Sprigings E.J., Understanding the role of shaft stiffness in the golf swing, Sports Engineering, 12, 1, pp. 13-19, (2009); Madden R., Sakaguchi M., Wannop J., Stefanyshyn D., Forefoot bending stiffness, running economy and kinematics during overground running, Footwear Science, 7, 1, pp. S11-S13, (2015); Milne R.D., Davis J.P., The role of the shaft in the golf swing, Journal of Biomechanics, 25, 9, pp. 975-983, (1992); Nigg B.M., Stefanyshyn D.J., Denoth J., Work and energy - mechanical considerations, Biomechanics and Biology of Human Movement, pp. 5-18, (2000); Oh K., Park S., The bending stiffness of shoes is beneficial to running energetics if it does not disturb the natural MTP joint flexion, Journal of Biomechanics, 53, pp. 127-135, (2017); Pearsall D.J., Montgomery R., Turcotte R., The influence of stick stiffness on the performance of ice hockey slap shots, Sports Engineering, 2, 1, pp. 3-11, (1999); Roy J.-P.R., Stefanyshyn D.J., Shoe midsole longitudinal bending stiffness and running economy, joint energy, and EMG, Medicine and Science in Sports and Exercise, 38, 3, pp. 562-569, (2006); Shinkai H., Nunome H., Isokawa M., Ikegami Y., Ball impact dynamics of instep soccer kicking, Medicine and Science in Sports and Exercise, 41, 4, pp. 889-897, (2009); Stefanyshyn D., Fusco C., Athletics: increased shoe bending stiffness increases sprint performance, Sports Biomechanics, 3, 1, pp. 55-66, (2004); Stefanyshyn D.J., Nigg B.M., Influence of midsole bending stiffness on joint energy and jump height performance, Medicine and Science in Sports and Exercise, 32, 2, pp. 471-476, (2000); Stefanyshyn D.J., Wannop J.W., The influence of forefoot bending stiffness of footwear on athletic injury and performance, Footwear Science, 8, 2, pp. 51-63, (2016); Sterzing T., Hennig E.M., The influence of soccer shoes on kicking velocity in full-instep kicks, Exercise and Sport Sciences Reviews, 36, 2, pp. 91-97, (2008); Sterzing T., Kroiher J., Hennig E.M., Kicking velocity: barefoot kicking superior to shod kicking?, Proceedings of the 6th World Congress on Science and Football, pp. 50-56, (2007); Tsaousidis N., Zatsiorsky V., Two types of ball-effector interaction and their relative contribution to soccer kicking, Human Movement Science, 15, 6, pp. 861-876, (1996); Vienneau J., Nigg S.R., Tomaras E.K., Enders H., Nigg B.M., Soccer shoe bending stiffness significantly alters game-specific physiology in a 25-minute continuous field-based protocol, Footwear Science, 8, 2, pp. 83-90, (2016); Winter D.A., Biomechanics and Motor Control of Human Movement. Motor Control, 2, (2009)","S. Cigoja; Human Performance Laboratory Faculty of Kinesiology, University of Calgary, Calgary, Canada; email: sasa.cigoja1@ucalgary.ca","","Taylor and Francis Ltd.","19424280","","","","English","Footwear Sci.","Article","Final","","Scopus","2-s2.0-85058072709" "Prasarn M.L.; Lorich D.G.","Prasarn, Mark L. (26665698200); Lorich, Dean G. (6602350631)","26665698200; 6602350631","Posterior Malleolus Fractures in Athletes","2017","Operative Techniques in Sports Medicine","25","2","","82","86","4","3","10.1053/j.otsm.2017.03.007","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019071603&doi=10.1053%2fj.otsm.2017.03.007&partnerID=40&md5=a137066d443b932e1326bc2bd6c13f16","Department of Orthopaedic surgery, University of Texas, Houston, TX, United States; Department of Orthopaedic surgery, Hospital for Special Surgery, New York, NY, United States","Prasarn M.L., Department of Orthopaedic surgery, University of Texas, Houston, TX, United States; Lorich D.G., Department of Orthopaedic surgery, Hospital for Special Surgery, New York, NY, United States","Ankle injuries are the most common sports-related injuries in athletes, the most of which are sprains or partial ligament tears. They most often occur in basketball and soccer, but essentially no sports are immune to ankle injuries. Ankle fractures occur less commonly than sprains, and are typically because of higher energy mechanisms. When dealing specifically with fractures of the posterior malleolus, these occur most often from a rotational injury, and are typically associated with fractures of one or both the other malleoli. The anatomy of the posterior ligaments, their osseous attachments, the weight bearing surface, and buttress effect of the posterior malleolus, make this a critical area of the ankle. There has been considerable debate as to the appropriate treatment of posterior malleolar fractures in the literature. In general, treatment has evolved from simple closed reduction and casting, to open reduction and internal fixation in most cases for reliable healing, restoration of anatomy, and expeditious return to play. © 2017 Elsevier Inc.","ankle fracture; athlete; outcome; posterior malleolus; sports; treatment","ankle radiography; Article; biomechanics; closed fracture reduction; human; incision; malleolus fracture; open fracture reduction; osteosynthesis; outcome assessment; pathological anatomy; priority journal; sport injury; x-ray computed tomography","Jaskulka R.A., Ittner G., Schedl R., Fractures of the posterior tibial margin: Their role in the prognosis of malleolar fractures, J Trauma, 29, 11, pp. 1565-1570, (1989); Boraiah S., Gardner M.J., Helfet D.L., Et al., High association of posterior malleolus fractures with spiral distal tibial fractures, Clin Orthop Relat Res, 466, 7, pp. 1692-1698, (2008); Warner S.J., Schottel P.C., Garner M.R., Et al., Ankle injuries in distal tibial spiral shaft fractures: Results from an institutional change in imaging protocol, Arch Orthop Trauma Surg, 134, 12, pp. 1661-1666, (2014); Miller J.M., Svoboda S.J., Gerber J.P., Diagnosis of an isolated posterior malleolar fracture in a young female military cadet: A resident case report, Int J Sports Phys Ther, 7, 2, pp. 167-172, (2012); Serbest S., Tiftikci U., Tosun H.B., Et al., Isolated posterior malleolus fracture: A rare injury mechanism, Pan Afr Med J, 20, (2015); Gardner M.J., Brodsky A., Briggs S.M., Et al., Fixation of posterior malleolar fractures provides greater syndesmotic stability, Clin Orthop Relat Res, 447, pp. 165-171, (2006); Gardner M.J., Streubel P.N., McCormick J.J., Et al., Surgeon practices regarding operative treatment of posterior malleolus fractures, Foot Ankle Int, 32, 4, pp. 385-393, (2011); Odak S., Ahluwalia R., Unnikrishnan P., Et al., Management of posterior malleolar fractures: A systematic review, J Foot Ankle Surg, 55, 1, pp. 140-145, (2016); Prasarn M.L., Werner C.M.L., Lorich D.G., Et al., pp. 170-188, (2012); Irwin T.A., Lien J., Kadakia A.R., Posterior malleolus fracture, J Am Acad Orthop Surg, 21, 1, pp. 32-40, (2013); Bauer M., Bergstrom B., Hemborg A., Sandegard J., Malleolar fractures: Nonoperative versus operative treatment. A controlled study, Clin Orthop Relat Res, 199, pp. 17-27, (1985); Bauer M., Jonsson K., Nilsson B., Thirty-year follow-up of ankle fractures, Acta Orthop Scand, 56, 2, pp. 103-106, (1985); Phillips W.A., Schwartz H.S., Keller C.S., Et al., A prospective, randomized study of the management of severe ankle fractures, J Bone Joint Surg Am, 67, 1, pp. 67-78, (1985); Yde J., Kristensen K.D., Ankle fractures: Supination-eversion fractures of stage IV. Primary and late results of operative and non-operative treatment, Acta Orthop Scand, 51, 6, pp. 981-990, (1980); Yde J., Kristensen K.D., Ankle fractures. Supination-eversion fractures stage II. Primary and late results of operative and non-operative treatment, Acta Orthop Scand, 51, 4, pp. 695-702, (1980); Hartford J.M., Gorczyca J.T., McNamara J.L., Et al., Tibiotalar contact area. Contribution of posterior malleolus and deltoid ligament, Clin Orthop Relat Res, (320, pp. 182-187, (1995); Macko V.W., Matthews L.S., Zwirkoski P., Et al., The joint-contact area of the ankle. The contribution of the posterior malleolus, J Bone Joint Surg Am, 73, 3, pp. 347-351, (1991); Raasch W.G., Larkin J.J., Draganich L.F., Assessment of the posterior malleolus as a restraint to posterior subluxation of the ankle, J Bone Joint Surg Am, 74, 8, pp. 1201-1206, (1992); Weening B., Bhandari M., Predictors of functional outcome following transsyndesmotic screw fixation of ankle fractures, J Orthop Trauma, 19, 2, pp. 102-108, (2005); Gardner M.J., Demetrakopoulos D., Briggs S.M., Et al., Malreduction of the tibiofibular syndesmosis in ankle fractures, Foot Ankle Int, 27, 10, pp. 788-792, (2006); Manjoo A., Sanders D.W., Tieszer C., Et al., Functional and radiographic results of patients with syndesmotic screw fixation: Implications for screw removal, J Orthop Trauma, 24, 1, pp. 2-6, (2010); Miller A.N., Carroll E.A., Parker R.J., Et al., Direct visualization for syndesmotic stabilization of ankle fractures, Foot Ankle Int, 30, 5, pp. 419-426, (2009); Ferries J.S., DeCoster T.A., Firoozbakhsh K.K., Et al., Plain radiographic interpretation in trimalleolar ankle fractures poorly assesses posterior fragment size, J Orthop Trauma, 8, 4, pp. 328-331, (1994); Donken C.C., Goorden A.J., Verhofstad M.H., Et al., The outcome at 20 years of conservatively treated “isolated” posterior malleolar fractures of the ankle: A case series, J Bone Joint Surg Br, 93, 12, pp. 1621-1625, (2011); De Vries J.S., Wijgman A.J., Sierevelt I.N., Et al., Long-term results of ankle fractures with a posterior malleolar fragment, J Foot Ankle Surg, 44, 3, pp. 211-217, (2005); McDaniel W.J., Wilson F.C., Trimalleolar fractures of the ankle. An end result study, Clin Orthop Relat Res, (122, pp. 37-45, (1977); Miller A.N., Paul O., Boraiah S., Et al., Functional outcomes after syndesmotic screw fixation and removal, J Orthop Trauma, 24, 1, pp. 12-16, (2010); van den Bekerom M.P., Haverkamp D., Kloen P., Biomechanical and clinical evaluation of posterior malleolar fractures. A systematic review of the literature, J Trauma, 66, 1, pp. 279-284, (2009); Tejwani N.C., Pahk B., Egol K.A., Effect of posterior malleolus fracture on outcome after unstable ankle fracture, J Trauma, 69, 3, pp. 666-669, (2010)","M.L. Prasarn; University of Texas, Houston, 6400 Fannin Suite 1700, 77030, United States; email: markprasarn@yahoo.com","","W.B. Saunders","10601872","","OTSMA","","English","Oper. Tech. Sports Med.","Article","Final","","Scopus","2-s2.0-85019071603" "Hearn D.W.; Kerr Z.Y.; Wikstrom E.A.; Goss D.L.; Cameron K.L.; Marshall S.W.; Padua D.A.","Hearn, Darren W. (57195249879); Kerr, Zachary Y. (36175812100); Wikstrom, Erik A. (6603871240); Goss, Donald L. (7004949560); Cameron, Kenneth L. (7102930668); Marshall, Stephen W. (7401823263); Padua, Darin A. (7005626883)","57195249879; 36175812100; 6603871240; 7004949560; 7102930668; 7401823263; 7005626883","Lower Extremity Musculoskeletal Injury in US Military Academy Cadet Basic Training: A Survival Analysis Evaluating Sex, History of Injury, and Body Mass Index","2021","Orthopaedic Journal of Sports Medicine","9","10","","","","","3","10.1177/23259671211039841","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116883788&doi=10.1177%2f23259671211039841&partnerID=40&md5=6caee8f3e3c00b30ac26cab9f1309aa6","South College, Knoxville, TN, United States; Human Movement Science Curriculum, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; United States Army, Fort Bragg, NC, United States; Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Department of Physical Therapy, High Point University, High Point, NC, United States; John Feagin Jr Sports Medicine Fellowship, Keller Army Hospital, United States Military Academy, West Point, NY, United States; Injury Prevention Research Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States","Hearn D.W., South College, Knoxville, TN, United States, Human Movement Science Curriculum, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States, United States Army, Fort Bragg, NC, United States; Kerr Z.Y., Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Wikstrom E.A., Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Goss D.L., Department of Physical Therapy, High Point University, High Point, NC, United States; Cameron K.L., John Feagin Jr Sports Medicine Fellowship, Keller Army Hospital, United States Military Academy, West Point, NY, United States; Marshall S.W., Injury Prevention Research Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Padua D.A., Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States","Background: Injury incidence for physically active populations with a high volume of physical load can exceed 79%. There is little existing research focused on timing of injury and how that timing differs based on certain risk factors. Purpose/Hypothesis: The purpose of this study was to report both the incidence and timing of lower extremity injuries during cadet basic training. We hypothesized that women, those with a history of injury, and those in underweight and obese body mass index (BMI) categories would sustain lower extremity musculoskeletal injury earlier in the training period than men, those without injury history, and those in the normal-weight BMI category. Study Design: Cohort study; Level of evidence, 2. Methods: Cadets from the class of 2022, arriving in 2018, served as the study population. Baseline information on sex and injury history was collected via questionnaire, and BMI was calculated from height and weight taken during week 1 at the United States Military Academy. Categories were underweight (BMI <20), middleweight (20-29.99), and obese (≥30). Injury surveillance was performed over the first 60 days of training via electronic medical record review and monitoring. Kaplan-Meier survival curves were used to estimate group differences in time to the first musculoskeletal injury. Cox proportional hazard regression was used to estimate hazard ratios (HRs). Results: A total of 595 cadets participated. The cohort was 76.8% male, with 29.9% reporting previous injury history and 93.3% having a BMI between 20 and 30. Overall, 16.3% of cadets (12.3% of male cadets and 29.7% of female cadets) experienced an injury during the follow-up period. Women experienced significantly greater incident injury than did men (P <.001). Separation of survival curves comparing the sexes and injury history occurred at weeks 3 and 4, respectively. Hazards for first musculoskeletal injury were significantly greater for women versus men (HR, 2.63; 95% CI, 1.76-3.94) and for those who reported a history of injury versus no injury history (HR, 1.76; 95% CI, 1.18-2.64). No differences were observed between BMI categories. Conclusion: Female cadets and those reporting previous musculoskeletal injury demonstrated a greater hazard of musculoskeletal injury during cadet basic training. This study did not observe an association between BMI and injury. © The Author(s) 2021.","basic training; injury; injury history; military","aerobic exercise; anterior cruciate ligament injury; anterior cruciate ligament reconstruction; Article; athlete; athletics; biomechanics; body mass; bone radiography; cohort analysis; electronic medical record; female; follow up; health care personnel; human; knee function; knee radiography; leg injury; lower limb; major clinical study; male; muscle mass; musculoskeletal injury; obesity; physical activity; physical performance; questionnaire; range of motion; retrospective study; return to sport; risk factor; shoulder injury; soccer player; soft tissue injury; sport injury; stress fracture; survival analysis; training; treadmill exercise; United States","Bell N.S., Mangione T.W., Hemenway D., Amoroso P.J., Jones B.H., High injury rates among female Army trainees: a function of gender?, Am J Prev Med, 18, pp. 141-146, (2000); Billaut F., Bishop D., Muscle fatigue in males and females during multiple-sprint exercise, Sports Med, 39, 4, pp. 257-278, (2009); Brannen S., Injuries During Marine Corps Officer Basic Training, 165, (2000); Drew M.K., Finch C.F., The relationship between training load and injury, illness and soreness: a systematic and literature review, Sports Med, 46, 6, pp. 861-883, (2016); Dye S.F., The pathophysiology of patellofemoral pain a tissue homeostasis perspective, Clin Orthop Relat Res, 436, pp. 100-110, (2005); Eckard T.G., Padua D.A., Hearn D.W., Pexa B.S., Frank B.S., The relationship between training load and injury in athletes: a systematic review, Sports Med, 48, pp. 1929-1961, (2018); Edwards W.B., Modeling overuse injuries in sport as a mechanical fatigue phenomenon, Exerc Sport Sci Rev, 46, 4, pp. 224-231, (2018); Epstein Y., Yanovich R., Moran D.S., Heled Y., Physiological employment standards IV: integration of women in combat units physiological and medical considerations, Eur J Appl Physiol, 113, 11, pp. 2673-2690, (2013); Gabbett T.J., The training-injury prevention paradox: should athletes be training smarter and harder?, Br J Sports Med, 50, 5, pp. 273-280, (2016); Grier T.L., Morrison S., Knapik J.J., Canham-Chervak M., Jones B.H., Risk factors for injuries in the U.S. Army Ordnance School, Mil Med, 176, 11, pp. 1292-1299, (2011); Haughom B., Schairer W., Souza R.B., Carpenter D., Ma C.B., Li X., Abnormal tibiofemoral kinematics following ACL reconstruction are associated with early cartilage matrix degeneration measured by MRI T1rho, Knee, 19, 4, pp. 482-487, (2012); Hauret K.G., Bedno S., Loringer K., Kao T.-C., Mallon T., Jones B.H., Epidemiology of exercise- and sports-related injuries in a population of young, physically active adults: a survey of military servicemembers, Am J Sports Med, 43, 11, pp. 2645-2653, (2015); Hauschild V.D., Lee T., Barnes S., Forrest L., Hauret K., Jones B.H., The etiology of injuries in US Army initial entry training, US Army Med Dep J, 2-18, pp. 22-29, (2018); Henderson N.E., Knapik J.J., Shaffer S.W., McKenzie T.H., Schneider G.M., Injuries and injury risk factors among men and women in U.S. Army combat medic advanced individual training, Mil Med, 165, 9, pp. 647-652, (2000); Jones B.H., Bovee M.W., Harris J.M., Cowan D.N., Intrinsic risk factors for exercise-related injuries among male and female army trainees, Am J Sports Med, 21, 5, pp. 705-710, (1993); Jones B.H., Hauret K.G., Dye S.K., Et al., Impact of physical fitness and body composition on injury risk among active young adults: a study of Army trainees, J Sci Med Sport, 20, pp. S17-S22, (2017); Kaufman K.R., Brodine S., Shaffer R., Military training-related injuries: surveillance, research, and prevention, Am J Prev Med, 18, pp. 54-63, (2000); Knapik J.J., Graham B., Cobbs J., Thompson D., Steelman R., Jones B.H., A prospective investigation of injury incidence and risk factors among army recruits in combat engineer training, J Occup Med Toxicol, 8, 1, (2013); Krauss M.R., Garvin N.U., Boivin M.R., Cowan D.N., Excess stress fractures, musculoskeletal injuries, and health care utilization among unfit and overweight female Army trainees, Am J Sports Med, 45, 2, pp. 311-316, (2017); Kucera K.L., Marshall S.W., Wolf S.H., Padua D.A., Cameron K.L., Beutler A.I., Association of injury history and incident injury in cadet basic military training, Med Sci Sports Exerc, 48, 6, pp. 1053-1061, (2016); Li G., Li J.S., Torriani M., Hosseini A., Short-term contact kinematic changes and longer-term biochemical changes in the cartilage after ACL reconstruction: a pilot study, Ann Biomed Eng, 46, 11, pp. 1797-1805, (2018); Lopes A.D., Hespanhol L.C., Yeung S.S., Costa L.O.P., What are the main running-related musculoskeletal injuries?, Sports Med, 42, 10, pp. 891-905, (2012); Mansournia M.A., Nielsen R.O., Bertelsen M.L., Et al., Time-to-event analysis for sports injury research part 2: time-varying outcomes, Br J Sports Med, 53, 1, pp. 70-78, (2019); Meier R., Stratton R, e-SPEN, 2008, pp. e167-e170, (2008); Minagawa Y., Saito Y., The role of underweight in active life expectancy among older adults in Japan, J Gerontol B Psychol Sci Soc Sci, 76, 4, pp. 756-765, (2021); Molloy J.M., Factors influencing running-related musculoskeletal injury risk among U.S. military recruits, Mil Med, 181, 6, pp. 512-523, (2016); Molloy J.M., Pendergrass T.L., Lee I.E., Chervak M.C., Hauret K.G., Rhon D.I., Musculoskeletal injuries and United States Army readiness part I: overview of injuries and their strategic impact, Mil Med, 185, 9-10, pp. e1461-e1471, (2020); Murphy D.F., Connolly D.A.J., Beynnon B.D., Risk factors for lower extremity injury: a review of the literature, Br J Sports Med, 37, 1, pp. 13-29, (2003); Myers N.L., Mexicano G., Aguilar K.V., The association between non-contact injuries and the acute: chronic workload ratio in elite level athletes: a critically appraised topic, J Sport Rehabil, 29, 1, pp. 127-130, (2020); Nielsen R.O., Bertelsen M.L., Ramskov D., Et al., Time-to-event analysis for sports injury research part 1: time-varying exposures, Br J Sports Med, 53, 1, pp. 61-68, (2019); Nye N.S., Pawlak M.T., Webber B.J., Tchandja J.N., Milner M.R., Description and rate of musculoskeletal injuries in Air Force basic military trainees, 2012−2014, J Athl Train, 51, 11, pp. 858-865, (2016); O'Leary T.J., Wardle S.L., Rawcliffe A.J., Chapman S., Mole J., Greeves J.P., Understanding the musculoskeletal injury risk of women in combat: the effect of infantry training and sex on musculoskeletal injury incidence during British Army basic training, BMJ Mil Heal, (2020); Popovich R.M., Gardner J.W., Potter R., Knapik J.J., Jones B.H., Effect of rest from running on overuse injuries in army basic training, Am J Prev Med, 18, pp. 147-155, (2000); Psaila M., Ranson C., Risk factors for lower leg, ankle and foot injuries during basic military training in the Maltese Armed Forces, Phys Ther Sport, 24, pp. 7-12, (2017); Reese M., Underweight: a heavy concern, Today’s Dietitian, 10, 1, (2008); Saragiotto B.T., Yamato T.P., Hespanhol L.C., Rainbow M.J., Davis I.S., Lopes A.D., What are the main risk factors for running-related injuries?, Sports Med, 44, 8, pp. 1153-1163, (2014); Soligard T., Schwellnus M., Alonso J.-M., Et al., How much is too much? (Part 1) International Olympic Committee consensus statement on load in sport and risk of injury, Br J Sports Med, 50, 17, pp. 1030-1041, (2016); Sulsky S.I., Bulzacchelli M.T., Zhu L., Et al., Risk factors for training-related injuries during U.S. Army basic combat training, Mil Med, 183, pp. 55-65, (2018); Terry A.C., Thelen M.D., Crowell M., Goss D.L., The Musculoskeletal Readiness Screening Tool---athlete concern for injury & prior injury associated with future injury, Int J Sports Phys Ther, 13, 4, pp. 595-604, (2018); Army Regulation 600-9: The Army Body Composition Program; Department of Physical Education. How to physically prepare for cadet basic training; Public Affairs Office. News release: class of 2022 to enter West Point. West Point; 2018, (2021); Van derWorp M.P., Ten Haaf D.S.M., Van Cingel R., De Wijer A., Nijhuis-Van der Sanden M.W.G., Staal J.B., Injuries in runners; a systematic review on risk factors and sex differences, PLoS One, 10, 2, (2015); Van Mechelen W., Hlobil H., Kemper H.C.G., Incidence, severity, aetiology and prevention of sports injuries: a review of concepts, Sports Med, 14, 2, pp. 82-99, (1992); Videbaek S., Bueno A.M., Nielsen R.O., Rasmussen S., Incidence of running-related injuries per 1000 h of running in different types of runners: a systematic review and meta-analysis, Sports Med, 45, 7, pp. 1017-1026, (2015); Viester L., Verhagen E.A., Hengel K.M.O., Koppes L.L., Van Der Beek A.J., Bongers P.M., The relation between body mass index and musculoskeletal symptoms in the working population, BMC Musculoskelet Disord, 14, (2013); Vittinghoff E., Glidden D.V., Shiboski S.C., McCulloch C.E., Survival analysis, Regression Methods in Biostatistics: Linear, Logistic, Survival, and Repeated Measures Models, pp. 203-259, (2012)","D.W. Hearn; South College, Knoxville, United States; email: dwhearn@gmail.com","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85116883788" "Truppa L.; Guaitolini M.; Garofalo P.; Castagna C.; Mannini A.","Truppa, Luigi (57218416943); Guaitolini, Michelangelo (57204361323); Garofalo, Pietro (35101926100); Castagna, Carlo (7003810227); Mannini, Andrea (55971103000)","57218416943; 57204361323; 35101926100; 7003810227; 55971103000","Assessment of biomechanical response to fatigue through wearable sensors in semi-professional football referees","2021","Sensors (Switzerland)","21","1","66","1","15","14","4","10.3390/s21010066","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85098760945&doi=10.3390%2fs21010066&partnerID=40&md5=5ace502831b6a5b2a2b08ec31cee81d9","The BioRobotics Institute, Scuola Superiore Sant’Anna, Pisa, 56127, Italy; Department of Excellence in Robotics & AI, Scuola Superiore Sant’Anna, Pisa, 56127, Italy; TuringSense EU Lab s.r.l., Forlì, 47121, Italy; School of Sport and Exercise Sciences, Università di Tor Vergata, Rome, 00118, Italy; Italian Football Federation (FIGC) Technical Department, Football Training and Biomechanics Laboratory, Firenze (Coverciano), 50135, Italy; IRCCS Fondazione don Carlo Gnocchi, Firenze, 50143, Italy","Truppa L., The BioRobotics Institute, Scuola Superiore Sant’Anna, Pisa, 56127, Italy, Department of Excellence in Robotics & AI, Scuola Superiore Sant’Anna, Pisa, 56127, Italy; Guaitolini M., The BioRobotics Institute, Scuola Superiore Sant’Anna, Pisa, 56127, Italy, Department of Excellence in Robotics & AI, Scuola Superiore Sant’Anna, Pisa, 56127, Italy; Garofalo P., TuringSense EU Lab s.r.l., Forlì, 47121, Italy; Castagna C., School of Sport and Exercise Sciences, Università di Tor Vergata, Rome, 00118, Italy, Italian Football Federation (FIGC) Technical Department, Football Training and Biomechanics Laboratory, Firenze (Coverciano), 50135, Italy; Mannini A., The BioRobotics Institute, Scuola Superiore Sant’Anna, Pisa, 56127, Italy, Department of Excellence in Robotics & AI, Scuola Superiore Sant’Anna, Pisa, 56127, Italy, IRCCS Fondazione don Carlo Gnocchi, Firenze, 50143, Italy","Quantifying muscle fatigue is a key aspect of everyday sport practice. A reliable and objective solution that can fulfil this task would be deeply important for two main reasons: (i) it would grant an objective indicator to adjust the daily training load for each player and (ii) it would provide an innovative tool to reduce the risk of fatigue-related injuries. Available solutions for objectively quantifying the fatigue level of fatigue can be invasive for the athlete; they could alter the performance or they are not compatible with daily practice on the playground. Building on previous findings that identified fatigue-related parameters in the kinematic of the counter-movement jump (CMJ), this study evaluates the physical response to a fatigue protocol (i.e., Yo-Yo Intermittent Recovery Test Level 1) in 16 football referees, by monitoring CMJ performance with wearable magneto-inertial measurement units (MIMU). Nineteen kinematic parameters were selected as suitable indicators for fatigue detection. The analysis of their variations allowed us to distinguish two opposites but coherent responses to the fatigue protocol. Indeed, eight out of sixteen athletes showed reduced performance (e.g., an effective fatigue condition), while the other eight athletes experienced an improvement of the execution likely due to the so-called Post-Activation Potentiation. In both cases, the above parameters were significantly influenced by the fatigue protocol (p < 0.05), confirming their validity for fatigue monitoring. Interesting correlations between several kinematic parameters and muscular mass were highlighted in the fatigued group. Finally, a “fatigue approximation index” was proposed and validated as fatigue quantifier. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.","Biomechanics; Counter-movement jump; Fatigue detection; Football; Wearable inertial sensors","Athletes; Athletic Performance; Football; Humans; Muscle Fatigue; Soccer; Wearable Electronic Devices; Football; Kinematics; Approximation index; Biomechanical response; Fatigue detection; Fatigue monitoring; Inertial measurement unit; Kinematic parameters; Physical response; Related injuries; athlete; athletic performance; electronic device; football; human; muscle fatigue; soccer; Wearable sensors","Fluck M., Functional, structural and molecular plasticity of mammalian skeletal muscle in response to exercise stimuli, J. Exp. Biol, 209, pp. 2239-2248, (2006); Kilduff L.P., Kingsley M.I.C., Owen N., Postactivation potentiation in professional rugby players: Optimal recovery, J. Strength Cond. Res, 21, pp. 1134-1138, (2007); Wilson J.M., Duncan N., Marin P., Brown L., Loenneke J.P., Wilson S.M.C, Jo E., Lowery R., Ugrinowitsch C., Meta-analysis of postactivation potentiation and power: Effects of conditioning activity, volume, gender, rest periods, and training status, J. Strength Cond. Res, 27, pp. 854-859, (2013); Sale D.G., Postactivation potentiation: Role in human performance, Exerc. Sport Sci. Rev, 30, pp. 138-143, (2002); Claudino J.G., Cronin J., Mezencio B., McMaster D.T., McGuigan M., Tricoli V., Amadio A.C., Serrao J.C., The countermovement jump to monitor neuromuscular status: A meta-analysis, J. Sci. Med. Sport, 20, pp. 397-402, (2017); Gibson H., Edwards R.H.T., Muscular Exercise and Fatigue, Sport. Med, 2, pp. 120-132, (1985); Jan E., Hagglund M., Walden M., Epidemiology of muscle injuries in professional football (soccer), Am. J Sports Med, 39, pp. 1226-1232, (2011); Greig M., Walker-Johnson C., The influence of soccer-specific fatigue on functional stability, Phys. Ther. Sport, 8, pp. 185-190, (2007); Borresen J., Lambert M.I., The quantification of training load, the training response and the effect on performance, Sports Med, 39, pp. 779-795, (2009); Crewe H., Tucker R., Noakes T.D., The rate of increase in rating of perceived exertion predicts the duration of exercise to fatigue at a fixed power output in different environmental conditions, Eur. J. Appl. Physiol, 103, (2008); Rodacki A.L.F., Fowler N.E., Bennett S.J., Vertical jump coordination: Fatigue effects, Med. Sci. Sports Exerc, 34, pp. 105-116, (2002); Singh V.P., Kumar D.K., Polus B., Fraser S., Strategies to identify changes in SEMG due to muscle fatigue during cycling, J. Med. Eng. Technol, 31, pp. 144-151, (2007); Mujika I., Quantification of training and competition loads in endurance sports: Methods and applications, Int. J. Sports Physiol. Perform, 12, pp. S2-S9, (2017); Picerno P., Camomilla V., Capranica L., Countermovement jump performance assessment using a wearable 3D inertial measurement unit, J. Sports Sci, 29, pp. 139-146, (2011); McHugh M.P., Clifford T., Abbott W., Kwiecien S.Y., Kremenic I.J., DeVita J.J., Howatson G., Countermovement jump recovery in professional soccer players using an inertial sensor, Int. J. Sports Physiol. Perform, 14, pp. 9-15, (2019); Milosevic B., Farella E., Wearable inertial sensor for jump performance analysis, Proceedings of the 2015 Workshop on Wearable Systems and Applications, pp. 15-20, (2015); Gathercole R.J., Stellingwerff T., Sporer B.C., Effect of acute fatigue and training adaptation on countermovement jump performance in elite snowboard cross athletes, J. Strength Cond. Res, 29, pp. 37-46, (2015); Bosco C., Ito A., Komi P.V., Luhtanen P., Rahkila P., Rusko H., Viitasalo J.T., Neuromuscular function and mechanical efficiency of human leg extensor muscles during jumping exercises, Acta Physiol. Scand, 114, pp. 543-550, (1982); Truppa L., Guaitolini M., Castagna C., Mannini A., The Eccentric Phase of Countermovement Jump: Comparing Motion Capture and Inertial Sensors, Seventh National Congress of Bioengineering Proceedings, Gruppo Nazionale di Bioingegneria, pp. 10-13, (2020); Bangsbo J., Iaia F.M., Krustrup P., The Yo-Yo intermittent recovery test, Sport. Med, 38, pp. 37-51, (2008); Ligorio G., Bergamini E., Truppa L., Guaitolini M., Raggi M., Mannini A., Sabatini A.M., Vannozzi G., Garofalo P., A wearable magnetometer-free motion capture system: Innovative solutions for real-world applications, IEEE Sens. J, 20, pp. 8844-8857, (2020); Mancini M., Horak F.B., Zampieri C., Carlson-Kuhta P., Nutt J.G., Chiari L., Trunk accelerometry reveals postural instability in untreated Parkinson’s disease, Parkinsonism Relat. Disord, 17, pp. 557-562, (2011); James W.P.T., Waterlow J.C., Research on Obesity: A Report of the DHSS/MRC Group, (1976); Gathercole R., Sporer B., Stellingwerff T., Sleivert G., Alternative Countermovement–Jump Analysis to Quantify Acute Neuromuscular Fatigue Pilot study investigating the effects of a short-term low Fodmap diet in healthy runners with persistent exercise-associated GI symptoms View project, Int J. Sport. Physiol Perform, 10, pp. 84-92, (2015); Appell H.-J., Soares J.M.C., Duarte J.A.R., Exercise, muscle damage and fatigue, Sport. Med, 13, pp. 108-115, (1992); Blanco J.-L., A tutorial on se (3) transformation parameterizations and on-manifold optimization, Univ. Malaga Tech. Rep, 3, (2010); Sanchez-Medina L., Gonzalez-Badillo J.J., Velocity loss as an indicator of neuromuscular fatigue during resistance training, Med. Sci. Sports Exerc, 43, pp. 1725-1734, (2011); Chan V.C.H., Beaudette C.M., Smale K.B., Beange K.H.E., Graham R.B., A Subject-Specific Approach to Detect Fatigue-Related Changes in Spine Motion Using Wearable Sensors, Sensors, 20, (2020); Rahnama N., Lees A., Reilly T., Electromyography of selected lower-limb muscles fatigued by exercise at the intensity of soccer match-play, J. Electromyogr. Kinesiol, 16, pp. 257-263, (2006); Castellini C., Artemiadis P., Wininger M., Ajoudani A., Alimusaj M., Bicchi A., Caputo B., Craelius W., Dosen S., Englehart K., Proceedings of the first workshop on peripheral machine interfaces: Going beyond traditional surface electromyography, Front. Neurorobot, 8, (2014); Thorlund J.B., Aagaard P., Madsen K., Rapid muscle force capacity changes after soccer match play, Int. J. Sports Med, 30, pp. 273-278, (2009); Djaoui L., Haddad M., Chamari K., Dellal A., Physiology & Behavior Monitoring training load and fatigue in soccer players with physiological markers, Physiol. Behav, 181, pp. 86-94, (2017); Castagna C., Impellizzeri F.M., Rampinini E., D'Ottavio S., Manzi V., The Yo–Yo intermittent recovery test in basketball players, J. Sci. Med. Sport, 11, pp. 202-208, (2008); Halson S.L., Monitoring training load to understand fatigue in athletes, Sport. Med, 44, pp. 139-147, (2014); Polito L.F.T., Polito L. F. T., Figueira A. J., Miranda M. L. J., Chtourou H., Miranda J. M., Brandao M. R. F., Psychophysiological indicators of fatigue in soccer players: A systematic review, Sci. Sports, 32, pp. 1-13, (2017)","L. Truppa; The BioRobotics Institute, Scuola Superiore Sant’Anna, Pisa, 56127, Italy; email: luigi.truppa@santannapisa.it; L. Truppa; Department of Excellence in Robotics & AI, Scuola Superiore Sant’Anna, Pisa, 56127, Italy; email: luigi.truppa@santannapisa.it","","MDPI AG","14248220","","","33374324","English","Sensors","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85098760945" "Patton D.A.; Huber C.M.; Margulies S.S.; Master C.L.; Arbogast K.B.","Patton, Declan A. (58566335700); Huber, Colin M. (57214871873); Margulies, Susan S. (7005871060); Master, Christina L. (8685818700); Arbogast, Kristy B. (7003855079)","58566335700; 57214871873; 7005871060; 8685818700; 7003855079","Non-header impact exposure and kinematics of male youth soccer players","2021","Biomedical Sciences Instrumentation","57","2","","106","113","7","3","10.34107/YHPN9422.04106","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118332187&doi=10.34107%2fYHPN9422.04106&partnerID=40&md5=d4e521a3b98ad14b8bda55515379c5a6","Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, Philadelphia, PA, United States; Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, United States; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, United States; Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States; Sports Medicine and Performance Center, Children’s Hospital of Philadelphia, Philadelphia, PA, United States","Patton D.A., Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, Philadelphia, PA, United States; Huber C.M., Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, Philadelphia, PA, United States, Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, United States; Margulies S.S., Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, United States; Master C.L., Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, Philadelphia, PA, United States, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States, Sports Medicine and Performance Center, Children’s Hospital of Philadelphia, Philadelphia, PA, United States; Arbogast K.B., Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, Philadelphia, PA, United States, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States","Previous studies have investigated the head impact kinematics of purposeful heading in youth soccer; however, less than a third of all head injuries in youth soccer have been found to involve ball contact. The aim of the current study was to identify the head impact kinematics and exposure not associated with purposeful heading of the ball in male youth soccer. Headband-mounted sensors were used to monitor the head kinematics of male junior varsity and middle school teams during games. Video analysis of sensor-recorded events was used to code impact mechanism, surface and site. Junior varsity players had non-header impact rates of 0.28 per athlete-exposure (AE) and 0.37 per player-hour (PH), whereas middle school players had relatively lower non-header impact rates of 0.16 per AE and 0.25 per PH. Such impact rates fell within the large range of values reported by previous studies, which is likely affected by sensor type and recording trigger threshold. The most common non-header impact mechanism in junior varsity soccer was player contact, whereas ball-to-head was the most common non-header impact mechanism in middle school soccer. Non-header impacts for junior varsity players had median peak kinematics of 31.0 g and 17.4 rad/s. Non-header impacts for middle school players had median peak kinematics of 40.6 g and 16.2 rad/s. For non-header impacts, ball impacts to the rear of the head the highest peak kinematics recorded by the sensor. Such data provide targets for future efforts in injury prevention, such as officiating efforts to control player-to-player contact. © 2021 IAE All rights reserved.","Biomechanics; Concussion; Head impact sensor; Injury prevention; Soccer","Kinematics; neoprene; Concussion; Head impact; Head impact sensor; Head injuries; Impact kinematics; Impact mechanism; Impact sensors; Injury prevention; Middle school; Soccer player; acceleration; accident prevention; adolescent; Article; biomechanics; child; controlled study; female; human; human experiment; kinematics; limit of quantitation; male; middle school; multiple linear regression analysis; normal human; observational study; prospective study; soccer; soccer player; surface property; Sports","Patton D.A., A Review of Instrumented Equipment to Investigate Head Impacts in Sport, Applied Bionics and Biomechanics, 2016, (2016); Patton D.A., Huber C.M., Jain D., Et al., Head Impact Sensor Studies in Sports: A Systematic Review of Exposure Confirmation Methods, Annals of Biomedical Engineering, 48, 11, pp. 2497-2507, (2020); Hanlon E.M., Bir C.A., Real-Time Head Acceleration Measurement in Girls’ Youth Soccer, Medicine & Science in Sport & Exercise, 44, 6, pp. 1102-1108, (2012); Caccese J.B., Buckley T.A., Tierney R.T., Et al., Sex and Age Differences in Head Acceleration During Purposeful Soccer Heading, Research in Sports Medicine, 26, 1, pp. 64-74, (2018); Harriss A., Johnson A.M., Walton D.M., Dickey J.P., Head Impact Magnitudes That Occur from Purposeful Soccer Heading Depend on the Game Scenario and Head Impact Location, Musculoskeletal Science & Practice, 40, pp. 53-57, (2019); Sandmo S.B., McIntosh A.S., Andersen T.E., Koerte I.K., Bahr R., Evaluation of an In-Ear Sensor for Quantifying Head Impacts in Youth Soccer, American Journal of Sports Medicine, 47, 4, pp. 974-981, (2019); Tomblin B.T., Pritchard N.S., Filben T.M., Et al., Characterization of On-Field Head Impact Exposure in Youth Soccer, Journal of Applied Biomechanics, 37, 1, pp. 36-42, (2020); American Youth Soccer Organization, US Club Soccer, and California Youth Soccer Association, Joint Statement regarding Concussion Lawsuit Resolution, (2015); ""U.S. Soccer Provides Additional Information about Upcoming Player Safety Campaign, (2015); Pickett W., Streight S., Simpson K., Brison R.J., Head injuries in Youth Soccer Players Presenting to the Emergency Department, British Journal of Sports Medicine, 39, 4, pp. 226-231, (2004); Giannotti M., Al-Sahab B., McFaull S., Tamim H., Epidemiology of Acute Head Injuries in Canadian Children and Youth Soccer Players, Injury, 41, 9, pp. 907-912, (2010); O'Kane J.W., Spieker A., Levy M.R., Et al., Concussion Among Female Middle-School Soccer Players, Journal of the American Medical Association Pediatrics, 168, 3, pp. 258-264, (2014); Faude O., Rossler R., Junge A., Et al., Head Injuries in Children’s Football-Results from Two Prospective Cohort Studies in Four European Countries, Journal of Medicine Sci Sports, 27, 12, pp. 1986-1992, (2017); Chrisman S.P.D., Macdonald C.L., Friedman S., Et al., Head Impact Exposure During a Weekend Youth Soccer Tournament, Journal of Child Neurology, 31, 8, pp. 971-978, (2016); Chrisman S.P.D., Ebel B.E., Stein E., Lowry S.J., Rivara F.P., Head Impact Exposure in Youth Soccer and Variation by Age and Sex, Clinical Journal of Sport Medicine, 29, 1, pp. 3-10, (2019); Rich A.M., Filben T.M., Miller L.E., Et al., Development, Validation and Pilot Field Deployment of a Custom Mouthpiece for Head Impact Measurement, Annals of Biomedical Engineering, 47, 10, pp. 2109-2121, (2019); Miller L.E., Pinkerton E.K., Fabian K.C., Et al., Characterizing Head Impact Exposure in Youth Female Soccer with a Custom-Instrumented Mouthpiece, Research in Sports Medicine, 28, 1, pp. 55-71, (2020); Patton D.A., Huber C.M., McDonald C.C., Et al., Video Confirmation of Head Impact Sensor Data from High School Soccer Players, American Journal of Sports Medicine, 48, 5, pp. 1246-1253, (2020); Sport and Gender Differences in Head Impact Exposure and Mechanism in High School Sports, (2020); Withnall C., Shewchenko N., Gittens R., Dvorak J., Biomechanical Investigation of Head Impacts in Football, British Journal of Sports Medicine, 39, pp. i49-i57, (2005); Mihalik J.P., Blackburn J.T., Greenwald R.M., Et al., Collision Type and Player Anticipation Affect Head Impact Severity Among Youth Ice Hockey Players, Pediatrics, 125, 6, pp. e1394-e1401, (2010); McIntosh A.S., Patton D.A., Frechede B., Et al., The Biomechanics of Concussion in Unhelmeted Football Players in Australia: A Case-Control Study, British Medical Journal Open, 4, 5, (2014); Campolettano E., Gellner R.A., Smith E.P., Et al., Development of a Concussion Risk Function for a Youth Population Using Head Linear and Rotational Acceleration, Annals of Biomedical Engineering, 48, 1, pp. 92-103, (2020); Rowson S., Duma S.M., Beckwith J.G., Et al., Rotational Head Kinematics in Football Impacts: An Injury Risk Function for Concussion, Annals of Biomedical Engineering, 40, 1, pp. 1-13, (2012); Rowson S., Duma S.M., Stemper B.D., Et al., Correlation of Concussion Symptom Profile with Head Impact Biomechanics: A Case for Individual-Specific Injury Tolerance, Journal of Neurotrauma, 35, 4, pp. 681-690, (2018); Rowson S., Campolettano E.T., Duma S.M., Et al., Accounting for Variance in Concussion Tolerance Between Individuals: Comparing Head Accelerations Between Concussed and Physically Matched Control Subjects, Annals of Biomedical Engineering, 47, 10, pp. 2048-2056, (2019); Broglio S.P., Lapointe A., O'Connor K., McCrea M., Head Impact Density: A Model to Explain the Elusive Concussion Threshold, Journal of Neurotrauma, 34, 19, pp. 2675-2683, (2017); Wu L.C., Nangia V., Bui K., Et al., In vivo Evaluation of Wearable Head Impact Sensors, Annals of Biomedical Engineering, 44, 4, pp. 1234-1245, (2016)","D.A. Patton; Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, Philadelphia, United States; email: PATTONDA@chop.edu","","International Academic Express","00678856","","BMSIA","","English","Biomed. Sci. Instrum.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-85118332187" "Ferrario V.F.; Sforza C.; Dugnani S.; Michielon G.; Mauro F.","Ferrario, Virgilio F. (7103275852); Sforza, Chiarella (7005225305); Dugnani, Sergio (13807950100); Michielon, Giovanni (14625403000); Mauro, Franco (7005890648)","7103275852; 7005225305; 13807950100; 14625403000; 7005890648","Morphological variation analysis of the repeatability of soccer offensive schemes","1999","Journal of Sports Sciences","17","2","","89","95","6","4","10.1080/026404199366181","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0032894097&doi=10.1080%2f026404199366181&partnerID=40&md5=353af2902bf950f17672371236d2027a","Lab. Anat. Funzionale D., Ist. Superiore Educ. Fis. Della L., Univ.́ degli Studi di Milano, Milan, Italy; Istituto di Anatomia Umana Normale, 20133 Milan, via Mangiagalli 31, Italy","Ferrario V.F., Lab. Anat. Funzionale D., Ist. Superiore Educ. Fis. Della L., Univ.́ degli Studi di Milano, Milan, Italy, Istituto di Anatomia Umana Normale, 20133 Milan, via Mangiagalli 31, Italy; Sforza C., Lab. Anat. Funzionale D., Ist. Superiore Educ. Fis. Della L., Univ.́ degli Studi di Milano, Milan, Italy; Dugnani S., Lab. Anat. Funzionale D., Ist. Superiore Educ. Fis. Della L., Univ.́ degli Studi di Milano, Milan, Italy; Michielon G., Lab. Anat. Funzionale D., Ist. Superiore Educ. Fis. Della L., Univ.́ degli Studi di Milano, Milan, Italy; Mauro F., Lab. Anat. Funzionale D., Ist. Superiore Educ. Fis. Della L., Univ.́ degli Studi di Milano, Milan, Italy","A landmark-based statistical method, morphological variation analysis, for the quantification of the repeatability in the arrangement of body segments during the execution of sport actions has recently been developed. A two-dimensional shape is produced and its morphology is studied. The method was used to measure the within-team variability of the relative positions of players during the execution of offensive schemes in soccer. Two junior soccer teams of different technical abilities (semi-professional vs amateur), each playing two standardized offensive schemes of different difficulty (easier: throw-in; more difficult: wing attack) were filmed. Each scheme was repeated 25 (semi-professionals) or 10 (amateurs) times. For each repetition, the position of the players in a single significant frame was analysed using morphological variation analysis. The reproducibility of both schemes was higher among the semi-professionals than among the amateurs (two-way analysis of variance, P < 0.005). The repeatability of the players' relative positions was related to the difficulty of the scheme and the technical level of the team. Among the amateurs, the throw-in was more reproducible than the wing attack (Student's t-test, P < 0.005). The method not only allows the quantification of collective (team) coordination, but also the separation of the influence of individual players.","Morphometry; Repeatability; Soccer; Statistics","Adolescent; Analysis of Variance; Biomechanics; Data Interpretation, Statistical; Humans; Male; Reproducibility of Results; Soccer; article; human; normal human; reproducibility; sport; statistical analysis; teamwork; videorecording","Anderson D.I., Sidaway B., Coordination changes associated with practice of a soccer kick, Research Quarterly for Exercise and Sport, 65, pp. 93-99, (1994); Cooke M.S., Wei S.H.Y., Cephalometric errors: A comparison between repeat measurements and retaken radiographs, Australian Dental Journal, 36, pp. 38-43, (1991); Eom H.J., Schutz R.W., Statistical analyses of Volleyball team performance, Research Quarterly for Exercise and Sport, 63, pp. 11-18, (1992); Eom H.J., Schutz R.W., Transition play in team performance of volleyball: A log-linear analysis, Research Quarterly for Exercise and Sport, 63, pp. 261-269, (1992); Ferrario V.F., Sforza C., Alberti G., Mauro F., Quantitative assessment of body shape during the standing long jump test: Proposal of a new method, Journal of Biomechanics, 27, (1994); Ferrario V.F., Sforza C., Bazan E., Mauro L., Michielon G., The repeatability of the defensive formation in the volleyball evaluated by the morphological variation analysis, Proceedings of an International Congress on Applied Research in Sports, (1994); Ferrario V.F., Sforza C., Michielon G., Mauro F., Miani A., Morphological variation analysis: A new method to quantify the repeatability of sport actions, Coaching and Sport Science Journal, 1, pp. 29-36, (1995); Franks I.M., McGarry T., The science of match analysis, Science and Soccer, pp. 363-375, (1996); Lele S., Some comments on coordinate-free and scale invariant methods in morphometry, American Journal of Physical Anthropology, 85, pp. 407-417, (1991); Pedotti A., Rodano R., Frigo C., Optimization of motor coordination in sport: An analytical and experimental approach, Biomechanics and Performance in Sport, pp. 145-160, (1983); Rodano R., Expectation of muscular force in training exercises: An analysis through the video vectograms, Hungarian Review of Sports Medicine, 26, pp. 3-14, (1985); Sanders R.H., Owens P.C., Hub movement during the swing of elite and novice golfers, International Journal of Sport Biomechanics, 8, pp. 320-330, (1992); Sforza C., Dugnani S., Mauro K., Torri L., Ferrario V.F., Repeatability of the football penalty: A statistical evaluation by the morphological variation analysis, Science and Football III, pp. 240-245, (1997); Sforza C., Michielon G., Grassi G., Alberti G., Ferrario V.F., Bivariate analysis of the repeatability of football offensive schemes, Science and Football III, pp. 233-239, (1997); Snedecor G.W., Cochran W.G., Statistical Methods, 6th Edn., (1972); Takei Y., Nohara H., Kamimura M., Techniques used by elite gymnasts in the 1992 Olympic compulsory dismount from the horizontal bar, International Journal of Sport Biomechanics, 8, pp. 207-232, (1992); Virmavirta M., Komi P.V., Takeoff analysis of a champion ski jumper, Coaching and Sport Science Journal, 1, pp. 23-27, (1994)","","","","02640414","","JSSCE","10069265","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-0032894097" "Robles-Palazón F.J.; Ruiz-Pérez I.; Oliver J.L.; Ayala F.; Sainz de Baranda P.","Robles-Palazón, Francisco Javier (57193313142); Ruiz-Pérez, Iñaki (57204536262); Oliver, Jon L. (7401628051); Ayala, Francisco (7101603256); Sainz de Baranda, Pilar (24391595400)","57193313142; 57204536262; 7401628051; 7101603256; 24391595400","Reliability, validity, and maturation-related differences of frontal and sagittal plane landing kinematic measures during drop jump and tuck jump screening tests in male youth soccer players","2021","Physical Therapy in Sport","50","","","206","216","10","4","10.1016/j.ptsp.2021.05.009","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107672799&doi=10.1016%2fj.ptsp.2021.05.009&partnerID=40&md5=bfe9e7123ee3365c613d59ccb36f5321","Department of Physical Activity and Sport, Faculty of Sport Sciences, Campus of Excellence Mare Nostrum, University of Murcia, Murcia, Spain; Sports and Musculoskeletal System Research Group (RAQUIS), University of Murcia, Murcia, Spain; Youth Physical Development Centre, School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom; Sport Performance Research Institute New Zealand (SPRINZ), Auckland University of Technology, Auckland, New Zealand","Robles-Palazón F.J., Department of Physical Activity and Sport, Faculty of Sport Sciences, Campus of Excellence Mare Nostrum, University of Murcia, Murcia, Spain, Sports and Musculoskeletal System Research Group (RAQUIS), University of Murcia, Murcia, Spain; Ruiz-Pérez I., Sports and Musculoskeletal System Research Group (RAQUIS), University of Murcia, Murcia, Spain; Oliver J.L., Youth Physical Development Centre, School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom, Sport Performance Research Institute New Zealand (SPRINZ), Auckland University of Technology, Auckland, New Zealand; Ayala F., Department of Physical Activity and Sport, Faculty of Sport Sciences, Campus of Excellence Mare Nostrum, University of Murcia, Murcia, Spain, Sports and Musculoskeletal System Research Group (RAQUIS), University of Murcia, Murcia, Spain; Sainz de Baranda P., Department of Physical Activity and Sport, Faculty of Sport Sciences, Campus of Excellence Mare Nostrum, University of Murcia, Murcia, Spain, Sports and Musculoskeletal System Research Group (RAQUIS), University of Murcia, Murcia, Spain","Objectives: To determine the inter-rater and intra-rater reliability of frontal and sagittal plane landing kinematic measures during drop jump (DVJ) and tuck jump (TJA) tasks in male youth soccer players, to assess the concurrent validity between DVJ and TJA tests, and to evaluate the ability of both tasks to detect differences between players’ stage of maturation. Design: Cross-sectional study. Participants: 223 male youth soccer players. Main outcome measures: Frontal plane knee projection angles (FPPA), and hip (HF), knee (KF) and ankle (AF) flexion angles at initial contact (IC) and peak flexion (PF) (i.e., the deepest landing position) in the sagittal plane were assessed. Results: Good-to-excellent inter- and intra-rater reliability (ICC > 0.75; TEMST < 0.3; CVTE < 5%) for the FPPA, HF and KF during DVJ and TJA tasks were found. A low concurrent validity between DVJ and TJA measures was reported. Differences by maturity status (BF10 > 10; error < 10; δ > 0.6) were only identified for the TJA. Pre-PHV group reported higher FPPA, HF-IC, HF-PF, and KF-IC values, as well as lower AF-IC than post-PHV. Pre-PHV also displayed greater HF-IC and KF-IC than circa-PHV group. Conclusions: Although both tests are reliable, the TJA might be viewed as a more informative tool given it shows greater FPPA and can also detect differences by maturity status. © 2021 The Authors","Adolescent; Knee injury; Maturity; Valgus","Adolescent; Ankle; Biomechanical Phenomena; Cross-Sectional Studies; Exercise Test; Hip; Humans; Knee; Lower Extremity; Male; Range of Motion, Articular; Reproducibility of Results; Sexual Maturation; Soccer; adolescent; analysis of variance; ankle flexion angle; Article; body height; body mass; calculation; child; concurrent validity; controlled study; cross-sectional study; descriptive research; drop jump; effect size; frontal plane knee projection angle; frontal plane landing kinematic; hip angle; hip flexion angle; human; human experiment; interrater reliability; intrarater reliability; jumping; kinematics; leg length; male; musculoskeletal system parameters; probability; reliability; sagittal plane landing kinematic; scoring system; soccer player; task performance; tuck jump; validity; ankle; biomechanics; exercise test; hip; joint characteristics and functions; knee; lower limb; physiology; procedures; reproducibility; sexual maturation; soccer","Batterham A.M., Hopkins W.G., Making meaningful inferences about magnitudes, International Journal of Sports Physiology and Performance, 1, 1, pp. 50-57, (2006); Brophy R., Silvers H.J., Gonzales T., Mandelbaum B.R., Gender influences: The role of leg dominance in ACL injury among soccer players, British Journal of Sports Medicine, 44, 10, pp. 694-697, (2010); Calo M.M., Anania T., Bello J.D., Et al., Reliability of using a handheld tablet to analyze lower extremity landing mechanics during drop vertical jumps, International Journal of Athletic Therapy & Training, 24, 2, pp. 70-77, (2019); Croce R.V., Russell P.J., Swartz E.E., Decoster L.C., Knee muscular response strategies differ by developmental level but not gender during jump landing, Electromyography & Clinical Neurophysiology, 44, 6, pp. 339-348, (2004); De Ste Croix M., Hughes J., Ayala F., Taylor L., Datson N., Efficacy of injury prevention training is greater for high-risk vs low-risk elite female youth soccer players, The American Journal of Sports Medicine, 46, 13, pp. 3271-3280, (2018); Dingenen B., Malfait B., Vanrenterghem J., Robinson M.A., Verschueren S.M.P., Staes F.F., Can two-dimensional measured peak sagittal plane excursions during drop vertical jumps help identify three-dimensional measured joint moments?, The Knee, 22, 2, pp. 73-79, (2015); Earl J.E., Monteiro S.K., Snyder K.R., Differences in lower extremity kinematics between a bilateral drop-vertical jump and a single-leg step-down, Journal of Orthopaedic & Sports Physical Therapy, 37, 5, pp. 245-252, (2007); Fort-Vanmeerhaeghe A., Romero-Rodriguez D., Montalvo A.M., Kiefer A.W., Lloyd R.S., Myer G.D., Integrative neuromuscular training in youth athletes. 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Pedley J.S., Lloyd R.S., Read P.J., Et al., Utility of kinetic and kinematic jumping and landing variables as predictors of injury risk: A systematic review, Journal of Science in Sport and Exercise, 2, 4, pp. 287-304, (2020); Pollard C.D., Sigward S.M., Powers C.M., Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments, Clinical biomechanics, 25, 2, pp. 142-146, (2010); Portney L.G., Foundations of clinical research: Applications to evidence-based practice, (2020); Quatman-Yates C.C., Quatman C.E., Meszaros A.J., Paterno M.V., Hewett T.E., A systematic review of sensorimotor function during adolescence: A developmental stage of increased motor awkwardness?, British Journal of Sports Medicine, 46, 9, pp. 649-655, (2012); Racine K., Warren M., Smith C., Lininger M.R., Reliability of the tuck jump assessment using standardized rater training, International Journal of Sports Physical Therapy, 16, 1, pp. 162-168, (2021); Raisanen A.M., Kulmala T., Parkkari J., Et al., There is no relationship between lower extremity alignment during unilateral and bilateral drop jumps and the risk of knee or ankle injury: A prospective study, Journal of Orthopaedic & Sports Physical Therapy, 50, 5, pp. 267-274, (2020); Read P.J., Oliver J.L., De Ste Croix M.B.A., Myer G.D., Lloyd R.S., Neuromuscular risk factors for knee and ankle ligament injuries in male youth soccer players, Sports Medicine, 46, 8, pp. 1059-1066, (2016); Read P.J., Oliver J.L., De Ste Croix M.B.A., Myer G.D., Lloyd R.S., Reliability of the tuck jump injury risk screening assessment in elite male youth soccer players, The Journal of Strength & Conditioning Research, 30, 6, pp. 1510-1516, (2016); Read P.J., Oliver J.L., De Ste Croix M.B.A., Myer G.D., Lloyd R.S., Landing kinematics in elite male youth soccer players of different chronologic ages and stages of maturation, Journal of Athletic Training, 53, 4, pp. 372-378, (2018); Read P.J., Oliver J.L., De Ste Croix M.B.A., Myer G.D., Lloyd R.S., A prospective investigation to evaluate risk factors for lower extremity injury risk in male youth soccer players, Scandinavian Journal of Medicine & Science in Sports, 28, 3, pp. 1244-1251, (2018); Read P.J., Oliver J.L., Myer G.D., Lloyd R.S., Reducing injury risk in young athletes, Strength and conditioning for young athletes, (2019); Rouder J.N., Morey R.D., Speckman P.L., Province J.M., Default Bayes factors for ANOVA designs, Journal of Mathematical Psychology, 56, 5, pp. 356-374, (2012); Russell P.J., Croce R.V., Swartz E.E., Decoster L.C., Knee-muscle activation during landings: Developmental and gender comparisons, Medicine & Science in Sports & Exercise, 39, 1, pp. 159-169, (2007); Shimokochi Y., Ambegaonkar J.P., Meyer E.G., Lee S.Y., Shultz S.J., Changing sagittal plane body position during single-leg landings influences the risk of non-contact anterior cruciate ligament injury, Knee Surgery, Sports Traumatology, Arthroscopy, 21, 4, pp. 888-897, (2013); Smith T.B., Hopkins W.G., Variability and predictability of finals times of elite rowers, Medicine & Science in Sports & Exercise, 43, 11, pp. 2155-2160, (2011); Sugimoto D., Myer G.D., Barber Foss K.D., Pepin M.J., Micheli L.J., Hewett T.E., Critical components of neuromuscular training to reduce ACL injury risk in female athletes: meta-regression analysis, British Journal of Sports Medicine, 50, 20, pp. 1259-1266, (2016); Takahashi S., Okuwaki T., Epidemiological survey of anterior cruciate ligament injury in Japanese junior high school and high school athletes: Cross-sectional study, Research in Sports Medicine, 25, 3, pp. 266-276, (2017); Taylor J.B., Ford K.R., Nguyen A.D., Shultz S.J., Biomechanical comparison of single- and double-leg jump landings in the sagittal and frontal plane, Orthopaedic Journal of Sports Medicine, 4, 6, pp. 1-9, (2016); Taylor K.L., Sheppard J.M., Lee H., Plummer N., Negative effect of static stretching restored when combined with a sport specific warm-up component, Journal of Science and Medicine in Sport, 12, 6, pp. 657-661, (2009); Weir J.P., Vincent W.J., Statistics in kinesiology, (2020); Westfall P.H., Johnson W.O., Utts J.M., A Bayesian perspective on the Bonferroni adjustment, Biometrika, 84, 2, pp. 419-427, (1997); Yu B., Garrett W.E., Mechanisms of non-contact ACL injuries, British Journal of Sports Medicine, 41, pp. 47-51, (2007); Yu B., McClure S.B., Onate J.A., Guskiewicz K.M., Kirkendall D.T., Garrett W.E., Age and gender effects on lower extremity kinematics of youth soccer players in a stop-jump task, The American Journal of Sports Medicine, 33, 9, pp. 1356-1364, (2005)","F. Ayala; Department of Physical Activity and Sport, University of Murcia. Faculty of Sport Sciences, Murcia, C/Argentina s/n, Santiago de la Ribera-San Javier, 30720, Spain; email: franciscoayalarodriguez@gmail.com","","Churchill Livingstone","1466853X","","PTSHB","34116405","English","Phys. Ther. Sport","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85107672799" "Rabello R.; Bertozzi F.; Galli M.; Zago M.; Sforza C.","Rabello, Rodrigo (57209451962); Bertozzi, Filippo (57197758376); Galli, Manuela (7202606196); Zago, Matteo (57220045130); Sforza, Chiarella (7005225305)","57209451962; 57197758376; 7202606196; 57220045130; 7005225305","Lower limbs muscle activation during instep kick in soccer: effects of dominance and ball condition","2022","Science and Medicine in Football","6","1","","40","48","8","3","10.1080/24733938.2021.1884283","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102463766&doi=10.1080%2f24733938.2021.1884283&partnerID=40&md5=53a295d920e5fa47110a327976a12934","Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Milano, Italy; Politecnico di Milano, Milano, Italy; E4Sport Lab, Politecnico di Milano, Milano, Italy","Rabello R., Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Milano, Italy; Bertozzi F., Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Milano, Italy; Galli M., Politecnico di Milano, Milano, Italy; Zago M., Politecnico di Milano, Milano, Italy, E4Sport Lab, Politecnico di Milano, Milano, Italy; Sforza C., Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Milano, Italy","Muscle activation has been studied in soccer players kicking stationary balls with the dominant foot. This study evaluated swinging and support limb muscle activation during the instep kick using different feet and ball approach conditions.Vastus medialis (VM), biceps femoris (BF), gastrocnemius medialis (GM) and tibialis anterior (TA) activations were evaluated during maximal instep kicks with both feet and the ball in five conditions (n = 18): stationary (STAT), approaching anteriorly (ANT), posteriorly (POST), laterally (LAT) and medially (MED). A repeated-measures two-way ANOVA compared activations between feet and ball conditions throughout the kicking (0–100%) and follow-through phases (101–200%). Close to ball contact (81–124%), non-dominant support GM had greater activation than the dominant one. The LAT and MED conditions differed within the cycle in the swinging VM (0–21%; 191–200%), BF (13–70%; 121–161%), GM (22–82%; 121–143%) and TA (0–32%; 55–97%; 186–200%) and in support VM (0–81%), BF (6–24%; 121–161%) and GM (24–87%). Players require greater support GM activation to stabilize the ankle during non-dominant kicks. Muscle activation differences between LAT and MED indicate that the kicking strategies are altered when kicking balls approaching from different directions. © 2021 Informa UK Limited, trading as Taylor & Francis Group.","EMG; Kicking; moving ball; sports motion","Biomechanical Phenomena; Foot; Lower Extremity; Muscle, Skeletal; Soccer; biomechanics; foot; lower limb; physiology; skeletal muscle; soccer","Brophy R.H., Backus S., Kraszewski A.P., Steele B.C., Ma Y., Osei D., Williams R.J., Differences between sexes in lower extremity alignment and muscle activation during soccer kick, J Bone Jt Surg - Ser A, 92, 11, pp. 2050-2058, (2010); Brophy R.H., Backus S.I., Pansy B.S., Lyman S., Williams R.J., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, J Orthop Sports Phys Ther, 37, 5, pp. 260-268, (2007); Carey D.P., Smith G., Smith D.T., Shepherd J.W., Skriver J., Ord L., Rutland A., Footedness in world soccer: an analysis of France ’98, J Sports Sci, 19, 11, pp. 855-864, (2001); 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Sforza; Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Milano, Via Mangiagalli 31, MI, 20133, Italy; email: chiarella.sforza@unimi.it","","Taylor and Francis Ltd.","24733938","","","35236218","English","Sci. Med. Footb.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85102463766" "Karamanoukian A.; Boucher J.-P.; Labbé R.; Vignais N.","Karamanoukian, Alexandre (57678549700); Boucher, Jean-Philippe (55630216000); Labbé, Romain (57194414028); Vignais, Nicolas (35225578400)","57678549700; 55630216000; 57194414028; 35225578400","Validation of Instrumented Football Shoes to Measure On-Field Ground Reaction Forces","2022","Sensors","22","10","3673","","","","2","10.3390/s22103673","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85129792534&doi=10.3390%2fs22103673&partnerID=40&md5=be5d419c6487254aa2df8ecdac4c9849","CIAMS, Université Paris Saclay, Orsay, 91405, France; CIAMS, Université d’Orléans, Orléans, 45067, France; Phyling, Palaiseau, 91120, France","Karamanoukian A., CIAMS, Université Paris Saclay, Orsay, 91405, France, CIAMS, Université d’Orléans, Orléans, 45067, France, Phyling, Palaiseau, 91120, France; Boucher J.-P., Phyling, Palaiseau, 91120, France; Labbé R., Phyling, Palaiseau, 91120, France; Vignais N., CIAMS, Université Paris Saclay, Orsay, 91405, France, CIAMS, Université d’Orléans, Orléans, 45067, France","Ground reaction forces (GRF) have been widely studied in football to prevent injury. However, ambulatory tools are missing, posing methodological limitations. The purpose of this study was to assess the validity of an innovative football shoe measuring normal GRF (nGRF) directly on the field through instrumented studs. A laboratory-based experiment was first conducted to compare nGRF obtained with the instrumented shoe (IS) to vertical GRF (vGRF) obtained with force platform (FP) data, the gold standard to measure vGRF. To this aim, three subjects performed 50 steps and 18 counter-movement jumps (CMJs). Secondly, eleven subjects completed running sprints at different velocities on a football field, as well as CMJs, while wearing the IS. Good to excellent agreement was found between the vGRF parameters measured with the FP and the nGRF measured by the IS (ICC > 0.75 for 9 out of 11 parameters). Moreover, on-field nGRF patterns demonstrated a progressive and significant increase in relation with the running velocity (p < 0.001). This study demonstrated that the IS is a highly valid tool to assess vGRF patterns on a football field. This innovative way to measure vGRF in situ could give new insights to quantify training load and detect neuromuscular fatigue. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.","embedded sensors; football; force platform; ground reaction forces; stud","Biomechanical Phenomena; Football; Humans; Mechanical Phenomena; Shoes; Soccer; Sports; Studs (fasteners); Studs (structural members); Embedded sensors; Field ground; Force platform; Force platform data; Gold standards; Ground reaction forces; Neuromuscular fatigue; biomechanics; football; human; mechanics; shoe; soccer; Biophysics","FIFA Survey: Approximately 250 Million Footballers Worldwide, (2001); Professional Football Report 2019, (2019); Beachy G., Akau C.K., Martinson M., Olderr T.F., High school sports injuries: A longitudinal study at Punahou School: 1988 to 1996, Am. J. 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Karamanoukian; CIAMS, Université Paris Saclay, Orsay, 91405, France; email: alexandre.karamanoukian@universite-paris-saclay.fr","","MDPI","14248220","","","35632081","English","Sensors","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85129792534" "Hearn D.W.; Frank B.S.; Padua D.A.","Hearn, Darren W. (57195249879); Frank, Barnett S. (55744023600); Padua, Darin A. (7005626883)","57195249879; 55744023600; 7005626883","Use of double leg injury screening to assess single leg biomechanical risk variables","2021","Physical Therapy in Sport","47","","","40","45","5","4","10.1016/j.ptsp.2020.10.006","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85094862109&doi=10.1016%2fj.ptsp.2020.10.006&partnerID=40&md5=cd45bec56d6c4c6f54ec46ebfd5586ea","Department of Exercise and Sport Science, MOTION Science Institute, University of North Carolina, Chapel Hill, NC, United States","Hearn D.W., Department of Exercise and Sport Science, MOTION Science Institute, University of North Carolina, Chapel Hill, NC, United States; Frank B.S., Department of Exercise and Sport Science, MOTION Science Institute, University of North Carolina, Chapel Hill, NC, United States; Padua D.A., Department of Exercise and Sport Science, MOTION Science Institute, University of North Carolina, Chapel Hill, NC, United States","Objectives: The purpose of this article was to determine if differences in kinematic and kinetic variables observed in a double-leg screen carried over to a single-leg task. Design: We used a case-control design with grouping based on performance during a double-leg jump landing. Setting: All participants were selected from a large university setting and testing was performed in a biomechanics laboratory. Participants: Participants were females between 18 and 25 years of age with at least high school varsity experience in one or more of the following sports: soccer, lacrosse, field hockey, rugby, basketball, or team handball. Main outcome measures: Primary outcome measures were knee angles in the frontal and sagittal planes as well as vertical ground reaction force (vGRF). Results: There were significant between group differences in peak knee flexion and knee flexion displacement during both the double and single-leg tasks, however between group differences for peak knee valgus and knee valgus displacement noted in the double-leg task were not observed in the single-leg task. vGRF was significantly different in the single-leg task but not the double-leg task. Conclusion: A double leg screening may not provide complete identification of risk of injury during sports requiring single leg tasks. © 2020","Double-leg; Injury; Screening; Single-leg","Adolescent; Adult; Anterior Cruciate Ligament Injuries; Athletic Injuries; Basketball; Biomechanical Phenomena; Case-Control Studies; Exercise Test; Female; Hockey; Humans; Kinetics; Knee Joint; Leg; Leg Injuries; Mass Screening; Racquet Sports; Soccer; Young Adult; adult; Article; athlete; basketball; biomechanics; case control study; controlled study; female; ground reaction force; hockey; human; kinematics; kinetics; knee dislocation; knee function; leg injury; mass screening; outcome assessment; personal experience; physical performance; priority journal; risk factor; rugby; soccer; task performance; valgus knee; adolescent; anterior cruciate ligament injury; biomechanics; exercise test; knee; leg; leg injury; mass screening; pathophysiology; procedures; racquet sport; sport injury; young adult","Agel J., Arendt E.A., Bershadsky B., Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: A 13-year review, The American Journal of Sports Medicine, 33, 4, pp. 524-530, (2005); 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Chan Z.Y.S., Zhang J.H., Au I.P.H., An W.W., Shum G.L.K., Ng G.Y.F., Cheung R.T.H., Gait retraining for the reduction of injury occurrence in novice distance runners: 1-Year follow-up of a randomized controlled trial, The American Journal of Sports Medicine, 46, 2, pp. 388-395, (2018); Conn J.M., Annest J.L., Gilchrist J., Sports and recreation related injury episodes in the US population, 1997-99, Injury Prevention; London, 9, 2, (2003); Crowell H.P., Davis I.S., Gait retraining to reduce lower extremity loading in runners, Clinical Biomechanics, 26, 1, pp. 78-83, (2011); Davis I.S., Bowser B.J., Mullineaux D.R., Greater vertical impact loading in female runners with medically diagnosed injuries: A prospective investigation, British Journal of Sports Medicine, 50, 14, pp. 887-892, (2016); Donohue M.R., Ellis S.M., Heinbaugh E.M., Stephenson M.L., Zhu Q., Dai B., Differences and correlations in knee and hip mechanics during single-leg landing, single-leg squat, double-leg landing, and double-leg squat tasks, Research in Sports Medicine, 23, 4, pp. 394-411, (2015); 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Hearn D., Rhon D., Goss D., Thelen M., Evaluation of a novel field expedient musculoskeletal readiness screening tool in an Army basic training population, Military Medicine, 182, 7, pp. e1862-e1868, (2017); Hewett T.E., Bates N.A., Preventive biomechanics: A paradigm shift with a translational approach to injury prevention, The American Journal of Sports Medicine, 45, 11, pp. 2654-2664, (2017); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes, the effect of neuromuscular training on the incidence of knee injury in female athletes, The American Journal of Sports Medicine, 27, 6, pp. 699-706, (1999); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., van den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, The American Journal of Sports Medicine, 33, 4, pp. 492-501, (2005); Huston L., Greenfield M., Wojtys E., Anterior cruciate ligament injuries in the female athlete. Potential risk factors, Clinical Orthopaedics and Related Research, 372, Mar, pp. 50-63, (2000); Jacobs J.M., Cameron K.L., Bojescul J.A., Lower extremity stress fractures in the military, Clinics in Sports Medicine, 33, 4, pp. 591-613, (2014); Johnston P.T., McClelland J.A., Webster K.E., Lower limb biomechanics during single-leg landings following anterior cruciate ligament reconstruction: A systematic review and meta-analysis, Sports Medicine, 48, 9, pp. 2103-2126, (2018); Lin C.Y., Casey E., Herman D.C., Katz N., Tenforde A.S., Sex differences in common sports injuries, PM & R: The Journal of Injury, Function, and Rehabilitation, 10, 10, pp. 1073-1082, (2018); Mauntel T.C., Padua D.A., Stanley L.E., Frank B.S., DiStefano L.J., Peck K.Y., Cameron K.L., Marshall S.W., Automated quantification of the landing error scoring system with a markerless motion-capture system, Journal of Athletic Training, 52, 11, pp. 1002-1009, (2017); Misra A., Common sports injuries: Incidence and average charges, (2014); Montalvo A.M., Schneider D.K., Webster K.E., Yut L., Galloway M.T., Heidt R.S., Kaeding C.C., Kremcheck T.E., Magnussen R.A., Parikh S.N., Stanfield D.T., Wall E.J., Myer G.D., Anterior cruciate ligament injury risk in sport: A systematic review and meta-analysis of injury incidence by sex and sport classification, Journal of Athletic Training, 54, 5, pp. 472-482, (2019); Montalvo A.M., Schneider D.K., Yut L., Webster K.E., Beynnon B., Kocher M.S., Myer G.D., “What's my risk of sustaining an ACL injury while playing sports?” A systematic review with meta-analysis, British Journal of Sports Medicine, 53, 16, pp. 1003-1012, (2019); de la Motte S.J., Clifton D.R., Gribbin T.C., Beutler A.I., Deuster P.A., Functional movement assessments are not associated with risk of injury during military basic training, Military Medicine, (2019); Napier C., Cochrane C.K., Taunton J.E., Hunt M.A., Gait modifications to change lower extremity gait biomechanics in runners: A systematic review, British Journal of Sports Medicine, 49, 21, pp. 1382-1388, (2015); (2016); Numata H., Nakase J., Kitaoka K., Shima Y., Oshima T., Takata Y., Shimozaki K., Tsuchiya H., Two-dimensional motion analysis of dynamic knee valgus identifies female high school athletes at risk of non-contact anterior cruciate ligament injury, Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA, 26, 2, pp. 442-447, (2018); Padua D.A., DiStefano L.J., Beutler A.I., de la Motte S.J., DiStefano M.J., Marshall S.W., The landing error scoring system as a screening tool for an anterior cruciate ligament injury-prevention program in elite-youth soccer athletes, Journal of Athletic Training, 50, 6, pp. 589-595, (2015); Padua D.A., Marshall S.W., Boling M.C., Thigpen C.A., William E., Garrett J., Beutler A.I., The landing error scoring system (LESS) is a valid and reliable clinical assessment tool of jump-landing biomechanics, The American Journal of Sports Medicine, (2009); Paterno M.V., Schmitt L.C., Ford K.R., Rauh M.J., Myer G.D., Huang B., Hewett T.E., Biomechanical measures during landing and postural stability predict second anterior cruciate ligament injury after anterior cruciate ligament reconstruction and return to sport, The American Journal of Sports Medicine, 38, 10, pp. 1968-1978, (2010); Pohl M.B., Mullineaux D.R., Milner C.E., Hamill J., Davis I.S., Biomechanical predictors of retrospective tibial stress fractures in runners, Journal of Biomechanics, 41, 6, pp. 1160-1165, (2008); Popp K.L., McDermott W., Hughes J.M., Baxter S.A., Stovitz S.D., Petit M.A., Bone strength estimates relative to vertical ground reaction force discriminates women runners with stress fracture history, Bone, 94, pp. 22-28, (2017); Popp K.L., McDermott W., Hughes J.M., Baxter S.A., Stovitz S.D., Petit M.A., Bone strength estimates relative to vertical ground reaction force discriminates women runners with stress fracture history, Bone, 94, pp. 22-28, (2017); Sasaki S., Koga H., Krosshaug T., Kaneko S., Fukubayashi T., Kinematic analysis of pressing situations in female collegiate football games: New insight into anterior cruciate ligament injury causation, Scandinavian Journal of Medicine & Science in Sports, 28, 3, pp. 1263-1271, (2018); Sheu Y., Chen L.-H., Ardinger H., Sports- and recreation-related injury Episodes in the United States, 2011-2014 (No. 99; national health Statistics report, (2016); Siupsinskas L., Garbenyte-Apolinskiene T., Salatkaite S., Gudas R., Trumpickas V., Association of pre-season musculoskeletal screening and functional testing with sports injuries in elite female basketball players, Scientific Reports, 9, 1, (2019); Smith H.C., Johnson R.J., Shultz S.J., Tourville T., Holterman L.A., Slauterbeck J., Vacek P.M., Beynnon B.D., A prospective evaluation of the Landing Error Scoring System (LESS) as a screening tool for anterior cruciate ligament injury risk, The American Journal of Sports Medicine, 40, 3, pp. 521-526, (2012); Whittaker J.L., Booysen N., de la Motte S., Dennett L., Lewis C.L., Wilson D., McKay C., Warner M., Padua D., Emery C.A., Stokes M., Predicting sport and occupational lower extremity injury risk through movement quality screening: A systematic review, British Journal of Sports Medicine, 51, 7, pp. 580-585, (2017); Wikstrom E.A., Tillman M.D., Schenker S., Borsa P.A., Failed jump landing trials: Deficits in neuromuscular control, Scandinavian Journal of Medicine & Science in Sports, 18, 1, pp. 55-61, (2008); van der Worp M.P., ten Haaf D.S.M., van Cingel R., de Wijer A., Nijhuis-van der Sanden M.W.G., Staal J.B., Injuries in runners; a systematic review on risk factors and sex differences, PloS One, 10, 2, (2015); Zadpoor A.A., Nikooyan A.A., The relationship between lower-extremity stress fractures and the ground reaction force: A systematic review, Clinical Biomechanics, 26, 1, pp. 23-28, (2011); Zifchock R.A., Davis I., Hamill J., Kinetic asymmetry in female runners with and without retrospective tibial stress fractures, Journal of Biomechanics, 39, 15, pp. 2792-2797, (2006)","D.W. Hearn; Siler City, 4755, Pleasant Hill Church Road, 27344, United States; email: hearnd@live.unc.edu","","Churchill Livingstone","1466853X","","PTSHB","33152587","English","Phys. Ther. Sport","Article","Final","","Scopus","2-s2.0-85094862109" "McGhie D.; Ettema G.","McGhie, David (37665498900); Ettema, Gertjan (55928778800)","37665498900; 55928778800","On the 'trench effect' theory: A biomechanical analysis of the relationship between traction and shoe orientation on third-generation artificial turf","2014","Footwear Science","6","1","","41","50","9","3","10.1080/19424280.2013.841771","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893776041&doi=10.1080%2f19424280.2013.841771&partnerID=40&md5=52f44e9306280ebe4ecd961cd18d8bd9","Centre for Sport Facilities and Technology, Norwegian University of Science and Technology, Department of Civil and Transport Engineering, Trondheim, Norway; Norwegian University of Science and Technology, Department of Human Movement Science, Trondheim, Norway","McGhie D., Centre for Sport Facilities and Technology, Norwegian University of Science and Technology, Department of Civil and Transport Engineering, Trondheim, Norway, Norwegian University of Science and Technology, Department of Human Movement Science, Trondheim, Norway; Ettema G., Norwegian University of Science and Technology, Department of Human Movement Science, Trondheim, Norway","Background: Based on mechanical device testing on third-generation artificial turf (3G turf) it has been theorised that when cleated shoes are rotated at an angle to the direction of sliding in the transverse plane, the number of separate cleats forced to carve unique paths through the infill increases, thus increasing translational traction (termed 'trench effect'). The aim of the study was to investigate whether the magnitude of this angle (shoe trench angle) affected traction across cleat configurations and 3G turf systems during a standardised in vivo change of direction movement.Methods: Twenty-two male soccer players (mean ± SD: age, 23.1 ± 2.8 years; height, 1.81 ± 0.06 m; body mass, 77.5 ± 6.0 kg) performed five short sprints with a 90° cut over a turf covered force plate for each combination of three turf systems and three cleat configurations. The traction coefficient - shoe trench angle relationship across cleat configurations and turf systems was determined with an analysis of covariance (ANCOVA) and shoe displacement was assessed with a linear mixed model.Results: There was a significant positive slope of the traction coefficient - shoe trench angle relationship, with a predicted increase in traction coefficient of 0.0017 for every degree of medial shoe rotation. The relationship did not differ between cleat configurations or turf systems. Across all shoe-surface combinations, mean ± SD shoe displacement was 1.33 ± 0.60 cm.Conclusion: During a standardised in vivo change of direction movement, an increase in shoe trench angle was accompanied by an increase in traction coefficient. The order of occurrence of these variables in such a movement makes it reasonable to assume that the increase in shoe trench angle causes the increase in traction coefficient. However, the magnitude of shoe displacement makes it difficult to support the 'trench effect' theory for controlled human movement. © 2013 © 2013 Taylor & Francis.","artificial turf; biomechanics; cleats; shoe orientation; shoe-surface interaction; traction","Biomechanics; Electric traction; Regression analysis; Analysis of covariances; Artificial turfs; Biomechanical analysis; cleats; Mechanical device; Surface interactions; Traction coefficient; Transverse planes; Traction (friction)","Frederick E.C., Optimal frictional properties for sport shoes and sport surfaces, Biomechanics in Sports XI. Proceedings of the XIth Symposium of the International Society of Biomechanics in Sports, 11, pp. 15-22, (1993); Kirk R.F., Et al., High-speed observations of football-boot-surface interactions of players in their natural environment, Sports Engineering, 10, pp. 129-144, (2007); Kuhlman S., Et al., Effect of loading condition on the traction coefficient between shoes and artificial turf surfaces, Journal of Sports Engineering and Technology, 224, pp. 155-165, (2009); Lambson R.B., Barnhill B.S., Higgins R.W., Football cleat design and its effect on anterior cruciate ligament injuries: A three year prospective study, The American Journal of Sports Medicine, 24, pp. 155-159, (1996); Lloyd D.G., Stevenson M.G., Dynamic friction measurements on artificial sports turf, The Journal of the Sports Turf Research Institute, 66, pp. 149-159, (1990); McGhie D., Ettema G., Biomechanical analysis of surface-athlete impacts on third-generation artificial turf, The American Journal of Sports Medicine, 41, 1, pp. 177-185, (2013); McGhie D., Ettema G., Biomechanical analysis of traction at the shoe-surface interface on third-generation artificial turf, Sports Engineering, 16, pp. 71-80, (2013); Sabick M., Et al., Balancing risks, rewards of athletic shoe traction, Lower Extremity Review, (2009); Severn A.K., Et al., Science of synthetic turf surfaces: Investigating traction behavior, Journal of Sports Engineering and Technology, 225, pp. 147-158, (2011); Taylor L., Steve Bruce demands inquiry into modern boots as cause of injury spate, The Guardian, (2010); Villwock M.R., Et al., The effect of various infills, fibre structures, and shoe designs on generating rotational traction on an artificial surface, Journal of Sports Engineering and Technology, 223, 1, pp. 11-19, (2009); Wannop J.W., Luo G., Stefanyshyn D.J., Footwear traction at different areas on artificial and natural grass fields, Sports Engineering, 15, pp. 111-116, (2012)","D. McGhie; Centre for Sport Facilities and Technology, Norwegian University of Science and Technology, Department of Civil and Transport Engineering, Trondheim, Norway; email: david.mcghie@svt.ntnu.no","","Taylor and Francis Ltd.","19424280","","","","English","Footwear Sci.","Article","Final","","Scopus","2-s2.0-84893776041" "Abaïdia A.-E.; Cosyns S.; Dupont G.","Abaïdia, Abd-Elbasset (56412012400); Cosyns, Sébastien (57208682057); Dupont, Grégory (7004422583)","56412012400; 57208682057; 7004422583","Muscle oxygenation induced by cycling exercise does not accelerate recovery kinetics following exercise-induced muscle damage in humans: A randomized cross-over study","2019","Respiratory Physiology and Neurobiology","266","","","82","88","6","2","10.1016/j.resp.2019.05.005","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85065515383&doi=10.1016%2fj.resp.2019.05.005&partnerID=40&md5=e973b666fe927eb230db0eebfa25eac2","Université de Lille, EA 7369 - URePSSS - Unité de Recherche Pluridisciplinaires Sport Santé Société, Lille, F-59000, France; Research Institute for Sport and Exercise Sciences Liverpool John Moores University, Liverpool, Liverpool, L3 3AF, United Kingdom","Abaïdia A.-E., Université de Lille, EA 7369 - URePSSS - Unité de Recherche Pluridisciplinaires Sport Santé Société, Lille, F-59000, France; Cosyns S., Université de Lille, EA 7369 - URePSSS - Unité de Recherche Pluridisciplinaires Sport Santé Société, Lille, F-59000, France; Dupont G., Research Institute for Sport and Exercise Sciences Liverpool John Moores University, Liverpool, Liverpool, L3 3AF, United Kingdom"," The aim of this study was to analyze the effects of inducing muscle oxygenation using an intermittent cycling exercise on recovery kinetics after exercise-induced muscle damage. Ten soccer players performed single-leg knee flexors exercise: 75 eccentric contractions. The day after, subjects performed an intermittent cycling exercise of 12 min (15 s work - 15 s rest)or recovered passively in a balanced and randomized cross-over design. Force, single and double-leg countermovement jumps, muscle soreness, perceived recovery and creatine kinase concentrations were assessed through a 72 h period. Oxygenation during cycling was assessed using Near Infrared Spectroscopy. Results showed an increase in knee flexors oxygenation using intermittent cycling (ΔHbO 2 = 70.2 ± 19.8%; ΔHHb = 68.2 ± 14.1%). Possibly small detrimental effect of cycling on eccentric force was found (ES = -0.58, 90% CI: -1.33 to 0.17). Small detrimental effects of cycling were found for soreness and perceived recovery. Implementing intermittent cycling exercise the day after muscle damage may be detrimental for recovery. © 2019 Elsevier B.V.","Eccentric; Fatigue; Football; Hamstring","Adult; Bicycling; Biomechanical Phenomena; Cross-Over Studies; Exercise; Humans; Lower Extremity; Male; Muscle, Skeletal; Oxygen Consumption; Spectroscopy, Near-Infrared; Young Adult; adult; Article; controlled study; convalescence; crossover procedure; cycling; eccentric muscle contraction; exercise; human; human experiment; knee; male; muscle injury; muscle oxygenation; near infrared spectroscopy; oxygenation; priority journal; randomized controlled trial; soccer player; biomechanics; cycling; exercise; lower limb; oxygen consumption; physiology; skeletal muscle; young adult","Abaidia A.E., Lamblin J., Delecroix B., Leduc C., McCall A., Nedelec M., Dawson B., Baquet G., Dupont G., Recovery from exercise-induced muscle damage: cold water immersion versus whole body cryotherapy, Int. J. Sports Physiol. Perform., 12, pp. 402-409, (2017); Abaidia A.E., Delecroix B., Leduc C., Lamblin J., McCall A., Baquet G., Dupont G., Effects of a strength training session after an exercise inducing muscle damage on recovery kinetics, J. Strength Cond. Res., 31, pp. 115-125, (2017); Andersson H., Raastad T., Nilsson J., Paulsen G., Garthe I., Kadi F., Neuromuscular fatigue and recovery in elite female soccer: effects of active recovery, Med. Sci. Sports Exerc., 40, pp. 372-380, (2008); Batterham A.M., Hopkins W.G., Making meaningful inferences about magnitudes, Int. J. Sports Physiol. Perform., 1, pp. 50-57, (2006); Belfry G.R., Paterson D.H., Murias J.M., Thomas S.G., The effects of short recovery duration on VO2 and muscle deoxygenation during intermittent exercise, Eur. J. Appl. Physiol., 112, pp. 1907-1915, (2012); Borg G., Perceived exertion as an indicator of somatic stress, Scand. J. Rehabil. Med., 2, pp. 92-98, (1970); Chaillou T., Lanner J.T., Regulation of myogenesis and skeletal muscle regeneration: effects of oxygen levels on satellite cell activity, FASEB J., 30, pp. 3929-3941, (2016); Charge S.B., Rudnicki M.A., Cellular and molecular regulation of muscle regeneration, Physiol. Rev., 84, 1, pp. 209-238, (2004); Clarkson P.M., Hubal M.J., Exercise-induced muscle damage in humans, Am. J. Phys. Med. Rehabil., 81, pp. S52-69, (2002); Dupont G., Nedelec M., McCall A., McCormack D., Berthoin S., Wisloff U., Effect of 2 soccer matches in a week on physical performance and injury rate, Am. J. Sports Med., 38, pp. 1752-1758, (2010); Foster C., Monitoring training in athletes with reference to overtraining syndrome, Med. Sci. Sports Exerc., 30, pp. 1164-1168, (1998); Harrison B.C., Robinson D., Davison B.J., Foley B., Seda E., Byrnes W.C., Treatment of exercise-induced muscle injury via hyperbaric oxygen therapy, Med. Sci. Sports Exerc., 33, pp. 36-42, (2001); Hawke T.J., Garry D.J., Myogenic satellite cells: physiology to molecular biology, J. Appl. Physiol., 91, pp. 534-551, (2001); Horder M., Jorgensen P.J., Hafkenscheid J.C., Carstensen C.A., Bachmann C., Bauer K., Neuwald C., Rosalki S.B., Foo A.Y., Vogt W., Creatine kinase determination: a European evaluation of the creatine kinase determination in serum, plasma and whole blood with the Reflotron system, Eur. J. Clin. Chem. Clin. Biochem., 29, pp. 691-696, (1991); Hopkins W.G., Precision of measurement, A New View of Statistics, (2002); Hopkins W.G., A scale of magnitudes for effect statistics, A New View of Statistics, (2002); Hug F., Dorel S., Electromyographic analysis of pedaling: a review, J. Electromyogr. Kinesiol., 19, pp. 182-198, (2009); Knicker A.J., Renshaw I., Oldham A.R., Cairns S.P., Interactive processes link the multiple symptoms of fatigue in sport competition, Sports Med., 41, pp. 307-328, (2011); Laurent C.M., Green J.M., Bishop P.A., Sjokvist J., Schumacker R.E., Richardson M.T., Curtner-Smith M., A practical approach to monitoring recovery: development of a perceived recovery status scale, J. Strength Cond. Res., 25, pp. 620-628, (2011); Lutjemeier B.J., Miura A., Scheuermann B.W., Koga S., Townsend D.K., Barstow T.J., Muscle contraction-blood flow interactions during upright knee extension exercise in humans, J. Appl. Physiol., 98, pp. 1575-1583, (2005); Mancinelli R., Pietrangelo T., La Rovere R., Toniolo L., Fano G., Reggiani C., Fulle S., Cellular and molecular responses of human skeletal muscle exposed to hypoxic environment, J. Biol. Regul. Homeost. Agents, 25, 4, pp. 635-645, (2011); McKeon M.D., Albert W.J., Neary J.P., Assessment of neuromuscular and haemodynamic activity in individuals with and without chronic low back pain, Dyn. Med., 31, pp. 5-6, (2006); Nedelec M., McCall A., Carling C., Legall F., Berthoin S., Dupont G., Recovery in soccer: part II-recovery strategies, Sports Med., 43, pp. 9-22, (2013); Ohya T., Aramaki Y., Kitagawa K., Effect of duration of active or passive recovery on performance and muscle oxygenation during intermittent sprint cycling exercise, Int. J. Sports Med., 34, pp. 616-622, (2013); Osgnach C., Poser S., Bernardini R., Rinaldo R., di Prampero P.E., Energy cost and metabolic power in elite soccer: a new match analysis approach, Med. Sci. Sports Exerc., 42, 1, pp. 170-178, (2010); Paulsen G., Mikkelsen U.R., Raastad T., Peake J.M., Leucocytes, cytokines and satellite cells: what role do they play in muscle damage and regeneration following eccentric exercise?, Exerc. Immunol. Rev., 18, pp. 42-97, (2012); Peake J.M., Neubauer O., Della Gatta P.A., Nosaka K., Muscle damage and inflammation during recovery from exercise, J. Appl. Physiol., 122, pp. 559-570, (2017); Sadamoto T., Bonde-Petersen F., Suzuki Y., Skeletal muscle tension, flow, pressure, and EMG during sustained isometric contractions in humans, Eur. J. Appl. Physiol. Occup. Physiol., 51, pp. 395-408, (1983); Silva J.R., Rumpf M.C., Hertzog M., Castagna C., Farooq A., Girard O., Hader K., Acute and residual soccer match-related fatigue: a systematic review and meta-analysis, Sports Med., 48, 3, pp. 539-583, (2018); Staples J.R., Clement D.B., Taunton J.E., McKenzie D.C., Effects of hyperbaric oxygen on a human model of injury, Am. J. Sports Med., 27, pp. 600-605, (1999); Stults-Kolehmainen M.A., Bartholomew J.B., Sinha R., Chronic psychological stress impairs recovery of muscular function and somatic sensations over a 96-hour period, J. Strength Cond. Res., 28, pp. 2007-2017, (2014); Thompson D., Nicholas C.W., Williams C., Muscular soreness following prolonged intermittent high-intensity shuttle running, J. Sports Sci., 17, pp. 387-395, (1999); Venter R.E., Perceptions of team athletes on the importance of recovery modalities, Eur. J. Sport Sci., 14, pp. S69-76, (2014); Warren G.L., Lowe D.A., Armstrong R.B., Measurement tools used in the study of eccentric contraction-induced injury, Sports Med., 27, pp. 43-59, (1999)","A.-E. Abaïdia; Faculté des Sciences du Sport et de l'Education Physique, Ronchin, EA 7369 9, rue de l'Université, 59790, France; email: abdel.aba@hotmail.fr","","Elsevier B.V.","15699048","","RPNEA","31077799","English","Respir. Physiol. Neurobiol.","Article","Final","","Scopus","2-s2.0-85065515383" "Colombo N.; Vignaga F.; Solari E.; Merlo M.; Manelli A.; Negrini D.; Moriondo A.","Colombo, Nicolò (57209587184); Vignaga, Francesca (57209571061); Solari, Eleonora (55871169900); Merlo, Mattia (57209586257); Manelli, Alessandro (8613592700); Negrini, Daniela (7004191936); Moriondo, Andrea (6603201860)","57209587184; 57209571061; 55871169900; 57209586257; 8613592700; 7004191936; 6603201860","Gait screening of a population of young, healthy athletes by means of a portable, low-cost device unveils hidden left-right asymmetries in both quadriceps and anterior cruciate ligament forces","2019","BMC Research Notes","12","1","366","","","","2","10.1186/s13104-019-4406-x","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85068119353&doi=10.1186%2fs13104-019-4406-x&partnerID=40&md5=4c087f114f215b9138618ee0b7efeb71","Department of Medicine and Surgery, School of Medicine, University of Insubria, Via Monte Generoso, 71, Varese, 21100, Italy; Physiatric Division, ASL 1 Imperiese, Bussana di Sanremo, Italy; School of Medicine, University of Insubria, Varese, Italy; University of Genoa, Genoa, Italy","Colombo N., Department of Medicine and Surgery, School of Medicine, University of Insubria, Via Monte Generoso, 71, Varese, 21100, Italy, School of Medicine, University of Insubria, Varese, Italy; Vignaga F., School of Medicine, University of Insubria, Varese, Italy; Solari E., Department of Medicine and Surgery, School of Medicine, University of Insubria, Via Monte Generoso, 71, Varese, 21100, Italy; Merlo M., University of Genoa, Genoa, Italy; Manelli A., Physiatric Division, ASL 1 Imperiese, Bussana di Sanremo, Italy; Negrini D., Department of Medicine and Surgery, School of Medicine, University of Insubria, Via Monte Generoso, 71, Varese, 21100, Italy; Moriondo A., Department of Medicine and Surgery, School of Medicine, University of Insubria, Via Monte Generoso, 71, Varese, 21100, Italy","Objective: The present study reports the on-field screening of a population of young soccer players in the pursuit of alterations in gait using a portable and low-cost gait analysis system composed of a Wii Balance Board and a webcam. Results: Recordings of motion of the lower extremities along with vertical ground reaction force (GRF) were used to quantify coefficients of symmetry for the overall GRF and the forces exerted by the quadriceps femori and acting on the anterior cruciate ligament (ACL). Data show that, in face of a quite homogeneous symmetry of GRF during left and right stance phases of gait, quadriceps and ACL exert and are subjected to left-right asymmetrical forces that might prelude, especially in young athletes, later alterations of gait. © 2019 The Author(s).","Gait analysis; On-field data acquisition; Population screening; Wii balance board","Adolescent; Adult; Anterior Cruciate Ligament; Athletes; Biomechanical Phenomena; Costs and Cost Analysis; Female; Functional Laterality; Gait; Humans; Male; Physiology; Quadriceps Muscle; Young Adult; adolescent; adult; anterior cruciate ligament; athlete; biomechanics; cost; devices; economics; female; gait; hemispheric dominance; human; male; physiology; quadriceps femoris muscle; young adult","Clark R.A., Mentiplay B.F., Pua Y.-H., Bower K.J., Reliability and validity of the Wii balance board for assessment of standing balance: A systematic review, Gait Posture., 61, pp. 40-54, (2018); Handzic I., Reed K.B., Analysis of human stepping dynamics using a wii balance board with a webcam, Proceedings of the 8th ACM International Conference on Pervasive Technologies Related to Assistive environments-PETRA'15, pp. 1-4, (2015); Tsaopoulos D.E., Baltzopoulos V., Maganaris C.N., Human patellar tendon moment arm length: Measurement considerations and clinical implications for joint loading assessment, Clin Biomech, 21, pp. 657-667, (2006); Masouros S.D., Bull A.M.J., Amis A.A., Biomechanics of the knee joint, Orthop Trauma., 24, pp. 84-91, (2010); Ferrario V.F., Sforza C., Colombo A., Ciusa V., An electromyographic investigation of masticatory muscles symmetry in normo-occlusion subjects, J Oral Rehabil, 27, 1, pp. 33-40, (2000); Sadeghi H., Local or global asymmetry in gait of people without impairments, Gait Posture., 17, pp. 197-204, (2003); Sadeghi H., Allard P., Prince F., Labelle H., Symmetry and limb dominance in able-bodied gait: A review, Gait Posture., 12, pp. 34-45, (2000); Radzak K.N., Putnam A.M., Tamura K., Hetzler R.K., Stickley C.D., Asymmetry between lower limbs during rested and fatigued state running gait in healthy individuals, Gait Posture., 51, pp. 268-274, (2017); Manning J.T., Pickup L.J., Symmetry and performance in middle distance runners, Int J Sports Med, 19, pp. 205-209, (1998); Knapik J.J., Bauman C.L., Jones B.H., Harris J.M., Vaughan L., Preseason strength and flexibility imbalances associated with athletic injuries in female collegiate athletes, Am J Sports Med, 76, (1991)","A. Moriondo; Department of Medicine and Surgery, School of Medicine, University of Insubria, Varese, Via Monte Generoso, 71, 21100, Italy; email: andrea.moriondo@uninsubria.it","","BioMed Central Ltd.","17560500","","","31253181","English","BMC Res. Notes","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85068119353" "Mendonça L.D.M.; Ocarino J.M.; Bittencourt N.F.N.; Santos T.R.T.; Barreto R.A.; Fonseca S.T.","Mendonça, Luciana De Michelis (36069252900); Ocarino, Juliana Melo (23480457400); Bittencourt, Natália Franco Netto (13409617500); Santos, Thiago Ribeiro Teles (56206795000); Barreto, Rafael Almeida (56454929700); Fonseca, Sérgio Teixeira (7005476583)","36069252900; 23480457400; 13409617500; 56206795000; 56454929700; 7005476583","Normative data of frontal plane patellar alignment in athletes","2015","Physical Therapy in Sport","16","2","","148e153","153","-148000","4","10.1016/j.ptsp.2014.09.003","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928582191&doi=10.1016%2fj.ptsp.2014.09.003&partnerID=40&md5=639d85fb574a9abe2eb17fd692605211","Laboratory of Sports Injuries Rehabilitation and Prevention (LAPREV), Universidade Federal de Minas Gerais, Belo Horizonte, MG CEP 31270-901, Brazil; Instituto Superior de Ciências da Saúde, Belo Horizonte, MG CEP 30494-270, Brazil; Departamento de Fisioterapia, Escola de Educação Física, Fisioterapia e Terapia Ocupacional, Universidade Federal de Minas Gerais, Belo Horizonte, MG CEP 31270-901, Brazil; Minas Tenis Clube, Belo Horizonte, MG CEP 30112-011, Brazil","Mendonça L.D.M., Laboratory of Sports Injuries Rehabilitation and Prevention (LAPREV), Universidade Federal de Minas Gerais, Belo Horizonte, MG CEP 31270-901, Brazil, Instituto Superior de Ciências da Saúde, Belo Horizonte, MG CEP 30494-270, Brazil; Ocarino J.M., Laboratory of Sports Injuries Rehabilitation and Prevention (LAPREV), Universidade Federal de Minas Gerais, Belo Horizonte, MG CEP 31270-901, Brazil, Departamento de Fisioterapia, Escola de Educação Física, Fisioterapia e Terapia Ocupacional, Universidade Federal de Minas Gerais, Belo Horizonte, MG CEP 31270-901, Brazil; Bittencourt N.F.N., Laboratory of Sports Injuries Rehabilitation and Prevention (LAPREV), Universidade Federal de Minas Gerais, Belo Horizonte, MG CEP 31270-901, Brazil, Minas Tenis Clube, Belo Horizonte, MG CEP 30112-011, Brazil; Santos T.R.T., Laboratory of Sports Injuries Rehabilitation and Prevention (LAPREV), Universidade Federal de Minas Gerais, Belo Horizonte, MG CEP 31270-901, Brazil; Barreto R.A., Laboratory of Sports Injuries Rehabilitation and Prevention (LAPREV), Universidade Federal de Minas Gerais, Belo Horizonte, MG CEP 31270-901, Brazil; Fonseca S.T., Laboratory of Sports Injuries Rehabilitation and Prevention (LAPREV), Universidade Federal de Minas Gerais, Belo Horizonte, MG CEP 31270-901, Brazil, Departamento de Fisioterapia, Escola de Educação Física, Fisioterapia e Terapia Ocupacional, Universidade Federal de Minas Gerais, Belo Horizonte, MG CEP 31270-901, Brazil","Objective: The objective of this study was to provide normative data of frontal plane patellar alignment according to McConnell and Arno angles, verify the association between theses angles and identify the presence of patellar rotation in different sports. Design: Cross-sectional. Participants: Nine participants (18 knees) were assessed in a preliminary study to verify the intra and inter-examiner reliabilities of the patellar alignment measures. In the main study, 230 volleyball, basketball, gymnastics and soccer athletes (460 knees) were evaluated in order to obtain normative data of patellar alignment. Main outcome measures: Frontal plane patellar alignment (McConnell and Arno angles) measured in standing position by means of photogrammetry. Results: The standardized method demonstrated intra and inter-examiner reliability coefficients varying from .85 to .98. The mean McConnell and Arno angles were 2.05° (±5.9) and 2.89° (±7.57), respectively. A low association was observed (r=189, p<.0001) between these angles. There was a difference in distribution of medial and lateral rotations, according to the McConnell angle, between different sports (p<.014). Conclusions: The proposed procedure for measuring patellar alignment according to McConnell and Arno angles proved to be highly reliable. This made possible the establishment of normative data in a large sample of healthy athletes. © 2014 Elsevier Ltd.","Alignment; Assessment; Patella; Reliability","Athletes; Biomechanical Phenomena; Female; Healthy Volunteers; Humans; Male; Patella; Photogrammetry; Reference Values; Reproducibility of Results; Rotation; Young Adult; adolescent; adult; Article; athlete; basketball; cross-sectional study; data analysis; female; frontal plane patellar alignment; human; interrater reliability; intrarater reliability; male; McConnell and Arno angle; musculoskeletal system parameters; normal human; photography; physical education; priority journal; soccer; standing; volleyball; anatomy and histology; biomechanics; patella; physiology; reference value; reproducibility; rotation; young adult","Arno S., The A angle: a quantitative measurement of patella alignment and realignment, Journal of Orthopaedic and Sports Physical Therapy, 12, 6, (1990); Barton C.J., Bonanno D., Levinger P., Menz H.B., Foot and ankle characteristics in patellofemoral pain syndrome: a case control and reliability study, Journal of Orthopaedic and Sports Physical Therapy, 40, 5, (2010); Diederichs G., Kohlitz T., Kornaropoulos E., Heller M.O., Vollnberg B., Scheffler S., Magnetic resonance imaging analysis of rotational alignment in patients with patellar dislocations, The American Journal of Sports Medicine, 41, 1, pp. 51-57, (2013); Diveta I.A., Vogelbach W.D., The clinical efficacy of the a-angle in measuring patellar alignment, Journal of Orthopaedic and Sports Physical Therapy, 16, 3, pp. 136-139, (1992); Draper C.E., Besier T.F., Fredericson M., Santos J.M., Beaupre G.S., Delp S.L., Et al., Differences in patellofemoral kinematics between weight-bearing and non-weight-bearing conditions in patients with patellofemoral pain, Journal of Orthopaedic Research, 29, 3, pp. 312-317, (2010); Ehrat M., Reliability of assessing patellar alignment: the A angle, Journal of Orthopaedic and Sports Physical Therapy, 19, 1, pp. 22-27, (1994); Elvin N., Elvin A., Scheffer C., Arnoczky S., Dillon E., Erasmus P.J., Apreliminary study of patellar tendon torques during jumping, Journal of Applied Biomechanics, 25, pp. 360-368, (2009); Lin F., Wilson N.A., Makhsous M., Press J.M., Koh J.L., Nuber G.W., Et al., Invivo patellar tracking induced by individual quadriceps components in individuals with patellofemoral pain, Journal of Biomechanics, 43, 2, pp. 235-241, (2010); MacIntyre N.J., McKnight E.K.B., Day A., Wilson D.R., Consistency of patellar spin, tilt and lateral translation side-to-side and over a 1 year period in healthy young males, Journal of Biomechanics, 41, 14, pp. 3094-3096, (2008); Mendonca L.D., Macedo L.G., Silva A.A., Fonseca S.T., Comparação do alinhamento anatÔmico de membros inferiores entre indivíduos saudáveis e indivíduos com Tendinose Patelar, Revista Brasileira de Fisioterapia, 9, 1, pp. 101-107, (2005); Merican A.M., Amis A.A., Iliotibial band tension affects patellofemoral and tibiofemoral kinematics, Journal of Biomechanics, 42, pp. 1539-1546, (2009); Powers C., The influence of altered lower-extremity kinematics on patellofemoral joint dysfunction: a theoretical perspective, Journal of Orthopaedic and Sports Physical Therapy, 33, pp. 639-646, (2003); Powers C.M., The influence of abnormal hip mechanics on knee injury: a biomechanical perspective, Journal of Orthopaedic and Sports Physical Therapy, 40, 2, pp. 42-51, (2010); Reiman M.P., Bolgla L.A., Lorenz D., Hip Function's influence on knee dysfunction: a proximal link to a distal problem, Journal of Sport Rehabilitation, 18, pp. 33-46, (2009); Souza R.B., Draper C.E., Fredericson M., Powers C.M., Femur rotation and patellofemoral joint kinematics: a weight-bearing magnetic resonance imaging analysis, Journal of Orthopaedic and Sports Physical Therapy, 40, 5, pp. 277-285, (2010); Tomsich D., Nitz A.J., Threlkeld A.J., Shapiro R., Patellofemoral alignment: reliability, Journal of Orthopaedic and Sports Physical Therapy, 23, 3, pp. 200-208, (1996); Watson C., Propps M., Galt W., Redding A., Dobbs D., Reliability of McConnell's classification of patellar orientation in symptomatic and asymptomatic subjects, Journal of Orthopaedic and Sports Physical Therapy, 29, 7, pp. 378-393, (1999); Wen D.Y., Risk factors for overuse injuries in runners, Current Medicine Reports, 6, pp. 307-313, (2007); Wilson T., The measurement of patellar alignment in patellofemoral pain syndrome: are we confusing assumptions with evidence?, Journal of Orthopaedic and Sports Physical Therapy, 37, 6, pp. 330-341, (2007); Wilson N.A., Mazahery B.T., Koh J., Zhang L., Effect of bracing on dynamic patellofemoral contact mechanics, Journal of Rehabilitation Research and Development, 47, 6, pp. 531-541, (2010); Wilson N.A., Press J.M., Koh J.L., Hendrix R.W., Zhang L., Invivo noninvasive evaluation of abnormal patellar tracking during squatting in patients with patellofemoral pain, Journal of Bone and Joint Surgery, 91, pp. 558-566, (2009); Zachazewski J.E., Magee D.J., Quillen W.S., Athletic injuries and rehabilitation, (1996)","","","Churchill Livingstone","1466853X","","PTSHB","25534038","English","Phys. Ther. Sport","Article","Final","","Scopus","2-s2.0-84928582191" "Lozano-Berges G.; Clansey A.C.; Casajús J.A.; Lake M.J.","Lozano-Berges, Gabriel (56335804100); Clansey, Adam C. (55364177300); Casajús, José A. (6506387083); Lake, Mark J. (57213492724)","56335804100; 55364177300; 6506387083; 57213492724","Lack of impact moderating movement adaptation when soccer players perform game specific tasks on a third-generation artificial surface without a cushioning underlay","2021","Sports Biomechanics","20","6","","665","679","14","3","10.1080/14763141.2019.1579365","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063191765&doi=10.1080%2f14763141.2019.1579365&partnerID=40&md5=833377785ab189da166a1ccd38675308","Growth, Exercise, Nutrition and Development Research Group, University of Zaragoza, Zaragoza, Spain; Faculty of Health and Sport Sciences, Department of Physiatry and Nursing, University of Zaragoza, Zaragoza, Spain; AgriFood Institute of Aragon, University of Zaragoza-CITA, Zaragoza, Spain; Spaulding Rehabilitation Hospital, Harvard Medical School, Boston, MA, United States; Faculty of Health Sciences, Department of Physiatry and Nursing, University of Zaragoza, Zaragoza, Spain; Centro de Investigación Biomédica en Red Obesity and Nutrition Physiopathology, Madrid, Spain; Research Institute of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom","Lozano-Berges G., Growth, Exercise, Nutrition and Development Research Group, University of Zaragoza, Zaragoza, Spain, Faculty of Health and Sport Sciences, Department of Physiatry and Nursing, University of Zaragoza, Zaragoza, Spain, AgriFood Institute of Aragon, University of Zaragoza-CITA, Zaragoza, Spain; Clansey A.C., Spaulding Rehabilitation Hospital, Harvard Medical School, Boston, MA, United States; Casajús J.A., Growth, Exercise, Nutrition and Development Research Group, University of Zaragoza, Zaragoza, Spain, AgriFood Institute of Aragon, University of Zaragoza-CITA, Zaragoza, Spain, Faculty of Health Sciences, Department of Physiatry and Nursing, University of Zaragoza, Zaragoza, Spain, Centro de Investigación Biomédica en Red Obesity and Nutrition Physiopathology, Madrid, Spain; Lake M.J., Research Institute of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom","The objective of this study was to investigate how the inclusion of a cushioning underlay in a third-generation artificial turf (3G) affects player biomechanics during soccer-specific tasks. Twelve soccer players (9 males/3 females; 22.6 ± 2.3 y) participated in this study. Mechanical impact testing of each 3G surface; without (3G-NCU) and with cushioning underlay (3G-CU) were conducted. Impact force characteristics, joint kinematics and joint kinetics variables were calculated on each surface condition during a sprint 90° cut (90CUT), a sprint 180° cut (180CUT), a drop jump (DROP) and a sprint with quick deceleration (STOP). For all tasks, greater peak resultant force, peak knee extensor moment and peak ankle dorsi-flexion moment were found in 3G-NCU than 3G-CU (p < 0.05). During 90CUT and STOP, loading rates were higher in 3G-NCU than 3G-CU (p < 0.05). During 180CUT, higher hip, knee and ankle ranges of motion were found in 3G-NCU (p < 0.05). These findings showed that the inclusion of cushioning underlay in 3G reduces impact loading forces and lower limb joint loading in soccer players across game-specific tasks. Overall, players were not attempting to reduce higher lower limb impact loading associated with a lack of surface cushioning underlay. © 2019 International Society of Biomechanics in Sports.","3G Surface; force measurements; kinematics; kinetic; soccer","Adult; Athletic Performance; Biomechanical Phenomena; Environment Design; Female; Humans; Kinetics; Lower Extremity; Male; Movement; Soccer; Surface Properties; Weight-Bearing; Young Adult; adult; ankle; article; biomechanics; clinical article; controlled study; deceleration; female; hip; human; kinematics; knee; male; range of motion; soccer player; athletic performance; environmental planning; kinetics; lower limb; movement (physiology); physiology; soccer; surface property; weight bearing; young adult","F1976-13, Standard test method for impact attenuation of athletic shoe cushioning systems and materials, (2013); Bell A.L., Pedersen D.R., Brand R.A., A comparison of the accuracy of several hip center location prediction methods, Journal of Biomechanics, 23, pp. 617-621, (1990); Burillo P., Gallardo L., Felipe J.L., Gallardo A.M., Mechanical assessment of artificial turf football pitches: The consequences of no quality certification, Scientific Research and Essays, 7, pp. 2457-2465, (2012); Clansey A.C., Hanlon M., Wallace E.S., Lake M.J., Effects of fatigue on running mechanics associated with tibial stress fracture risk, Medicine and Science in Sports and Exercise, 44, pp. 1917-1923, (2012); Cole G.K., Nigg B.M., Ronsky J.L., Yeadon M.R., Application of the joint coordinate system to three-dimensional joint attitude and movement representation: A standardization proposal, Journal of Biomechanical Engineering, 115, pp. 344-349, (1993); Damm L., Low D., Richardson A., Clarke J., Carre M., Dixon S., The effects of surface traction characteristics on frictional demand and kinematics in tennis, Sports Biomechanics, 12, pp. 389-402, (2013); Dempster W.T., Space requirements of the seated operator: Geometrical, kinematic, and mechanical aspects of the body with special reference to the limbs, (1955); Dixon S.J., Batt M.E., Collop A.C., Artificial playing surfaces research: A review of medical, engineering and biomechanical aspects, International Journal of Sports Medicine, 20, pp. 209-218, (1999); Dixon S.J., Collop A.C., Batt M.E., Surface effects on ground reaction forces and lower extremity kinematics in running, Medicine and Science in Sports and Exercise, 32, pp. 1919-1926, (2000); Dixon S.J., Collop A.C., Batt M.E., Compensatory adjustments in lower extremity kinematics in response to a reduced cushioning of the impact interface in heel–Toe running, Sports Biomechanics, 8, pp. 47-55, (2005); Dixon S.J., Stiles V.H., Impact absorption of tennis shoe-surface combinations, Sports Engineering, 6, pp. 1-9, (2003); Dufek J.S., Bates B.T., Biomechanical factors associated with injury during landing in jump sports, Sports Medicine, 12, pp. 326-337, (1991); FIFA Quality programme for football turf. Handbook of requirements, (2015); Ferber R., McClay-Davis I., Hamill J., Pollard C.D., McKeown K.A., Kinetic variables in subjects with previous lower extremity stress fractures, Medicine and Science in Sports and Exercise, 334, (2002); Fleming P., Artificial turf systems for sport surfaces: Current knowledge and research needs, Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 225, pp. 43-63, (2011); Gecha S.R., Torg E., Knee injuries in tennis, Clinics in Sports Medicine, 7, pp. 435-452, (1988); Gerritsen K.G., van den Bogert A.J., Nigg B.M., Direct dynamics simulation of the impact phase in heel-toe running, Journal of Biomechanics, 28, pp. 661-668, (1995); Hanavan E.P., A mathematical model of the human body, (1964); Hopkins W.G., Marshall S.W., Batterham A.M., Hanin J., Progressive statistics for studies in sports medicine and exercise science, Medicine & Exercise in Sports & Exercise, 41, pp. 3-13, (2009); Hreljac A., Impact and overuse injuries in runners, Medicine and Science in Sports and Exercise, 36, pp. 845-849, (2004); Hreljac A., Marshall R.N., Hume P.A., Evaluation of lower extremity overuse injury potential in runners, Medicine and Science in Sports and Exercise, 32, pp. 1635-1641, (2000); Karamanidis K., Arampatzis A., Bruggemann G.P., Adaptational phenomena and mechanical responses during running: Effect of surface, aging and task experience, European Journal of Applied Physiology, 98, pp. 284-298, (2006); Kristianslund E., Krosshaug T., van den Bogert A.J., Effect of low pass filtering on joint moments from inverse dynamics: Implications for injury prevention, Journal of Biomechanics, 45, pp. 666-671, (2012); Lafortune M.A., Lake M.J., Human pendulum approach to simulate and quantify locomotor impact loading, Journal of Biomechanics, 28, pp. 1111-1114, (1995); Leppanen M., Pasanen K., Krosshaug T., Kannus P., Vasankari T., Kujala U.M., Parkkari J., Sagittal plane hip, knee, and ankle biomechanics and the risk of anterior cruciate ligament injury: A prospective study, Orthopaedic Journal of Sports Medicine, 5, (2017); Livesay G.A., Reda D.R., Nauman E.A., Peak torque and rotational stiffness developed at the shoe-surface interface: The effect of shoe type and playing surface, American Journal of Sports Medicine, 34, pp. 415-422, (2006); Low D.C., Dixon S.J., The influence of shock-pad density and footwear cushioning on heel impact and forefoot loading during running and turning movements, International Journal of Surface Science and Engineering, 10, pp. 86-98, (2016); Martinez A., Dura J.V., Gamez J., Zamora R.T., Alcantara E., Artificial and natural turf: Biomechanical differences between surfaces. Communications to the Fifth World Congress on Science and Football, Journal of Sports Sciences, 22, pp. 485-593, (2004); McGhie D., Ettema G., Biomechanical analysis of surface-athlete impacts on third-generation artificial turf, American Journal of Sports Medicine, 41, pp. 177-185, (2013); McNitt-Gray J.L., Kinetics of the lower extremities during drop landings from three heights, Journal of Biomechanics, 26, pp. 1037-1046, (1993); Meijer K., Dethmers J., Savelberg H., Willems P., Wijers B., Biomechanical analysis of running on third generation artificial soccer turf, The engineering of sport 6, 1, pp. 29-34, (2006); Milner C.E., Ferber R., Pollard C.D., Hamill J., Davis I.S., Biomechanical factors associated with tibial stress fracture in female runners, Medicine and Science in Sports and Exercise, 38, pp. 323-328, (2006); Nigg B.M., The validity and relevance of tests used for the assessment of sports surfaces, Medicine and Science in Sports and Exercise, 22, pp. 131-139, (1990); Nigg B.M., Cole G.K., Bruggemann C.P., Impact forces during heel-toe running, Journal of Applied Biomechanics, 11, pp. 407-432, (1995); Paavola M., Achilles tendon overuse injuries, (2001); Sanchez-Sanchez J., Felipe J.L., Burillo P., Del Corral J., Gallardo L., Effect of the structural components of support on the mechanical behavior and the sport functionality of football fields of artificial turf, Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 228, pp. 155-164, (2014); Sanchez-Sanchez J., Haxaire P., Garcia Unanue J., Felipe J.L., Gallardo L., Determination of mechanical properties of artificial turf football pitches according to structural components, Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 232, pp. 131-139, (2017); Stiles V.H., Dixon S.J., The influence of different playing surfaces on the biomechanics of a tennis running forehand foot plant, Journal of Applied Biomechanics, 22, pp. 14-24, (2006); Stiles V.H., Dixon S.J., Biomechanical response to systematic changes in impact interface cushioning properties while performing a tennis-specific movement, Journal of Sports Sciences, 25, pp. 1229-1239, (2007); Stiles V.H., Guisasola I.N., James I.T., Dixon S.J., Biomechanical response to changes in natural turf during running and turning, Journal of Applied Biomechanics, 27, pp. 54-63, (2011); Villwock M.R., Meyer E.G., Powell J.W., Fouty A.J., Haut R.C., Football playing surface and shoe design affect rotational traction, American Journal of Sports Medicine, 37, pp. 518-525, (2009); Woods C., Hawkins R., Hulse M., Hodson A., The Football Association Medical Research Programme: An audit of injuries in professional football-analysis of preseason injuries, British Journal of Sports Medicine, 36, pp. 436-441, (2002); Zadpoor A.A., Nikooyan A.A., The relationship between lower-extremity stress fractures and the ground reaction force: A systematic review, Clinical Biomechanics, 26, pp. 23-28, (2011)","G. Lozano-Berges; Growth, Exercise, Nutrition and Development Research Group, University of Zaragoza, Zaragoza, Spain; email: glozano@unizar.es","","Routledge","14763141","","","30896294","English","Sports Biomech.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85063191765" "Kuo C.; Sganga J.; Fanton M.; Camarillo D.B.","Kuo, Calvin (7404480701); Sganga, Jake (6505818593); Fanton, Michael (57190184259); Camarillo, David B. (6506423628)","7404480701; 6505818593; 57190184259; 6506423628","Head Impact Kinematics Estimation with Network of Inertial Measurement Units","2018","Journal of Biomechanical Engineering","140","9","091006","","","","3","10.1115/1.4039987","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85047937300&doi=10.1115%2f1.4039987&partnerID=40&md5=8d37864687713abd3b05055212bbe07d","Department of Mechanical Engineering, Stanford University, Stanford, 94305, CA, United States; Department of Bioengineering, Stanford University, Stanford, 94305, CA, United States","Kuo C., Department of Mechanical Engineering, Stanford University, Stanford, 94305, CA, United States; Sganga J., Department of Bioengineering, Stanford University, Stanford, 94305, CA, United States; Fanton M., Department of Mechanical Engineering, Stanford University, Stanford, 94305, CA, United States; Camarillo D.B., Department of Mechanical Engineering, Stanford University, Stanford, 94305, CA, United States","Wearable sensors embedded with inertial measurement units have become commonplace for the measurement of head impact biomechanics, but individual systems often suffer from a lack of measurement fidelity. While some researchers have focused on developing highly accurate, single sensor systems, we have taken a parallel approach in investigating optimal estimation techniques with multiple noisy sensors. In this work, we present a sensor network methodology that utilizes multiple skin patch sensors arranged on the head and combines their data to obtain a more accurate estimate than any individual sensor in the network. Our methodology visually localizes subject-specific sensor transformations, and based on rigid body assumptions, applies estimation algorithms to obtain a minimum mean squared error estimate. During mild soccer headers, individual skin patch sensors had over 100% error in peak angular velocity magnitude, angular acceleration magnitude, and linear acceleration magnitude. However, when properly networked using our visual localization and estimation methodology, we obtained kinematic estimates with median errors below 20%. While we demonstrate this methodology with skin patch sensors in mild soccer head impacts, the formulation can be generally applied to any dynamic scenario, such as measurement of cadaver head impact dynamics using arbitrarily placed sensors. © 2018 by ASME.","","Acceleration; Adult; Biomechanical Phenomena; Head; Humans; Male; Mechanical Phenomena; Monitoring, Physiologic; Soccer; Embedded systems; Errors; Kinematics; Mean square error; Sensor networks; Sports; Angular acceleration; Estimation algorithm; Estimation methodologies; Inertial measurement unit; Linear accelerations; Minimum mean squared error; Network methodologies; Single sensor systems; acceleration; adult; algorithm; Article; biomechanics; head; human; human experiment; kinematics; male; mathematical model; measurement accuracy; measurement error; methodology; soccer; velocity; devices; mechanics; physiologic monitoring; Wearable sensors","Moeslund T.B., Granum E., A survey of computer vision-based human motion capture, Comput. Vision Image Understanding, 81, 3, pp. 231-268, (2001); Moeslund T.B., Hilton A., Kru V., A survey of advances in vision-based human motion capture and analysis, Comput. Vision Image Understanding, 104, 2-3, pp. 90-126, (2006); Harvey P.S., Gavin H., Assessing the accuracy of vision-based accelerometry, Exp. Mech., 54, 2, pp. 273-277, (2014); Leifer J., Weems B., Kienle S.C., Sims A.M., Three-dimensional acceleration measurement using videogrammetry tracking data, Exp. Mech., 51, 2, pp. 199-217, (2011); Gabler L.F., Crandall J.R., Panzer M.B., Assessment of kinematic brain injury metrics for predicting strain responses in diverse automotive impact conditions, Ann. Biomed. Eng., 44, 12, pp. 3705-3718, (2016); Ji S., Zhao W., Li Z., McAllister T.W., Head impact accelerations for brain strain-related responses in contact sports: A model-based investigation, Biomech. Model. Mechanobiol., 13, 5, pp. 1121-1136, (2014); Takhounts E.G., Ridella S.A., Rowson S., Duma S.M., Kinematic Rotational Brain Injury Criterion (Bric 22nd International Technical Conference On the Enhanced Safety of Vehicles, pp. 1-10, (2010); Kleiven S., Evaluation of head injury criteria using a finite element model validated against experiments on localized brain motion, intracerebral acceleration, intracranial pressure, Int. J. Crashworthines, 11, 1, pp. 65-79, (2006); Hernandez F., Wu L.C., Yip M.C., Laksari K., Hoffman A.R., Lopez J.R., Grant G., Kleiven S., Camarillo D.B., Six degree-of-freedom measurements of human mild traumatic brain injury, Ann. Biomed. Eng., 43, 8, pp. 1918-1934, (2015); Naunheim R.S., Standeven J., Richter C., Lewis L.M., Comparison of impact data in hockey, football, soccer, J. 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Biomech., 49, 9, pp. 1845-1853, (2016); Camarillo D.B., Shull P.B., Mattson J., Shultz R., Garza D., An instrumented mouthguard for measuring linear and angular head impact kinematics in American football, Ann. Biomed. Eng., 41, 9, pp. 1939-1949, (2013); Jadischke R., Viano D.C., Dau N., King A.I., McCarthy J., On the accuracy of the head impact telemetry (hit) system used in football helmets, J. Biomech., 46, 13, pp. 2310-2315, (2013); Foxlin E., Inertial head-tracker sensor fusion by a complimentary separate-bias kalman filter, IEEE Virtual Reality Annual International Symposium, Santa Clara, CA, 3, (1996); Khaleghi B., Khamis A., Karray F.O., Razavi S.N., Multisensor data fusion: A review of the state-of-the-art, Inf. Fusion, 14, 1, pp. 28-44, (2013); Sabatini A.M., Quaternion-based extended kalman filter for determining orientation by inertial and magnetic sensing, IEEE Trans. Biomed. 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Neurotrauma, 33, 20, pp. 1834-1847, (2016); Wan E.A., Nelson A.T., Dual extended kalman filter methods, Kalman Filtering Neural Networks, pp. 123-173, (2001)","C. Kuo; Department of Mechanical Engineering, Stanford University, Stanford, 94305, United States; email: calvink@stanford.edu","","American Society of Mechanical Engineers (ASME)","01480731","","JBEND","29801166","English","J. Biomech. Eng.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-85047937300" "Marieswaran M.; Sikidar A.; Rana A.; Singh D.; Mansoori N.; Lalwani S.; Kalyanasundaram D.","Marieswaran, M. (57201312749); Sikidar, Arnab (57190949861); Rana, Abhishek (57205158138); Singh, Dilpreet (57225948356); Mansoori, Nasim (56368445900); Lalwani, Sanjeev (7003448881); Kalyanasundaram, Dinesh (24447714500)","57201312749; 57190949861; 57205158138; 57225948356; 56368445900; 7003448881; 24447714500","A cadaveric study on the rate of strain dependent behaviour of human anterior cruciate ligament","2021","Acta of Bioengineering and Biomechanics","23","1","","45","57","12","3","10.37190/ABB-01672-2020-05","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105076689&doi=10.37190%2fABB-01672-2020-05&partnerID=40&md5=14066692a70a73d6a095239df214f5ed","Indian Institute of Technology Delhi, New Delhi, India; CSIR-Central Mechanical Engineering Research Institute, Durgapur, India; All India Institute of Medical Sciences, New Delhi, India","Marieswaran M., Indian Institute of Technology Delhi, New Delhi, India; Sikidar A., Indian Institute of Technology Delhi, New Delhi, India; Rana A., Indian Institute of Technology Delhi, New Delhi, India; Singh D., Indian Institute of Technology Delhi, New Delhi, India, CSIR-Central Mechanical Engineering Research Institute, Durgapur, India; Mansoori N., All India Institute of Medical Sciences, New Delhi, India; Lalwani S., All India Institute of Medical Sciences, New Delhi, India; Kalyanasundaram D., Indian Institute of Technology Delhi, New Delhi, India","Purpose: Failure of anterior cruciate ligament often occurs in young sports personnel hampering their career. Such ACL ruptures are quite prevalent in sports such as soccer during dynamic loading which occurs at more than one rate of loading. In this work, a structural constitutive equation has been used to predict the forces acting on ACL for different rates of loading. Methods: Ligaments with distal femur and proximal tibia were subjected to tensile loading to avoid crushing of tissue ends and slipping at higher rates of strain. Custom designed cylindrical grippers were fabricated to clamp the distal femur and proximal tibial bony sections. To estimate parameters for the model, eighteen fresh cadaveric femur-ACL-tibia complex (FATC) samples were experimented by pure tensile loading at three orders of rates of strain viz., 0.003, 0.03, and 0.3 s-1. The experimental force-elongation data was used to obtain parameters for De-Vita and Slaughter’s equation. The model was validated with additional tensile experiments. Results: Statistical analysis demonstrated failure stress, Young’s modulus and volumetric strain energy to vary significantly as a function of rate of strain. Midsection failure was observed only in samples tested at 0.03 s-1. Femoral or tibial insertion failure were observed in all other experiments irrespective of rate of strain. Conclusion: Human FATC samples were tensile tested to failure at three rates of strain using custom-designed cylindrical grippers. A structural model was used to model the data for the ACL behaviour in the linear region of loading to predict ligament behaviour during dynamic activities in live subjects. © 2021, Institute of Machine Design and Operation. All rights reserved.","Dynamic loading; Femur-anterior cruciate ligament-tibia complex (FATC); Force-length behaviour; Rate of strain; Structural model; Tensile properties","Anterior Cruciate Ligament; Biomechanical Phenomena; Cadaver; Femur; Humans; Knee Joint; Tibia; anterior cruciate ligament; biomechanics; cadaver; femur; human; knee; tibia","Ahsanizadeh S., Li L., Visco-hyperelastic constitutive modeling of soft tissues based on short and long-term internal variables, Biomed. Eng. Online, 14, (2015); Arendt E.A., Agel J., Dick R., Anterior cruciate ligament injury patterns among collegiate men and women, J. Athl. Train, 34, pp. 86-92, (1999); Arnoux P.J., Cavallero C., Chabrand P., Brunet C., Knee ligament failure under dynamic loadings, Int. J. Crashworthiness, 7, pp. 255-268, (2002); Bonner T.J., Newell N., Karunaratne A., Pullen A.D., Amis A.A., Bull A. M.J., Masouros S.D., Strain-rate sensitivity of the lateral collateral ligament of the knee, J. Mech. Behav. Biomed. Mater, 41, pp. 261-270, (2015); Chandrashekar N., Mansouri H., Slauterbeck J., Hashemi J., Sex-based differences in the tensile properties of the human anterior cruciate ligament, J. Biomech, 39, pp. 2943-2950, (2006); Corder G.W., Foreman D.I., Nonparametric Statistics for Non-Statisticians: A Step-by-Step Approach, (2011); Crowninshield R.D., Pope M.H., The strength and failure characteristics of rat medial collateral ligaments, J. Trauma, 16, pp. 99-105, (1976); Danto M.I., Woo S.L.Y., The mechanical properties of skeletally mature rabbit anterior cruciate ligament and patellar tendon over a range of strain rates, J. Orthop. Res, 11, pp. 58-67, (1993); Fung Y.C., Biomechanics, (1981); Holzapfel G., Nonlinear solid mechanics: A continuum approach for engineering, Work. First Edit, (2000); Kennedy J.C., Hawkins R.J., Willis R.B., Danylchuck K.D., Tension studies of human knee ligaments. Yield point, ultimate failure, and disruption of the cruciate and tibial collateral ligaments, J. Bone Joint Surg. Am, 58, pp. 350-355, (1976); Kiapour A.M., Kiapour A., Goel V.K., Quatman C.E., Wordeman S.C., Hewett T.E., Demetropoulos C.K., Uni-directional coupling between tibiofemoral frontal and axial plane rotation supports valgus collapse mechanism of ACL injury, J. Biomech, 48, pp. 1745-1751, (2015); Levine J.W., Kiapour A.M., Quatman C.E., Wordeman S.C., Goel V.K., Hewett T.E., Demetropoulos C.K., Clinically relevant injury patterns after an anterior cruciate ligament injury provide insight into injury mechanisms, Am. J. Sports Med, 41, pp. 385-395, (2014); Limbert G., Middleton J., A transversely isotropic viscohyperelastic material Application to the modeling of biological soft connective tissues, Int. J. Solids Struct, 41, pp. 4237-4260, (2004); Marieswaran M., Jain I., Garg B., Sharma V., Kalyanasundaram D., A Review on Biomechanics of Anterior Cruciate Ligament and Materials for Reconstruction, Appl. Bionics Biomech, 2018, pp. 1-14, (2018); McLean S.G., Mallett K.F., Arruda E.M., Deconstructing the anterior cruciate ligament: what we know and do not know about function, material properties, and injury mechanics, J. Biomech. Eng, 137, (2015); Mo F., Arnoux P.J., Cesari D., Masson C., The failure modelling of knee ligaments in the finite element model, Int. J. Crashworthiness, 17, pp. 630-636, (2012); Mo F., Arnoux P.J., Cesari D., Masson C., Investigation of the injury threshold of knee ligaments by the parametric study of car-pedestrian impact conditions, Saf. Sci, 62, pp. 58-67, (2014); Mo F., Masson C., Cesari D., Arnoux P.J., Coupling Lateral Bending and Shearing Mechanisms to Define Knee Injury Criteria for Pedestrian Safety, Traffic Inj. Prev, 14, pp. 378-386, (2013); Noyes F.R., DeLucas J.L., Torvik P.J., Biomechanics of anterior cruciate ligament failure: an analysis of strain-rate sensitivity and mechanisms of failure in primates, J. Bone Joint Surg. Am, 56, pp. 236-253, (1974); Noyes F.R., Grood E.S., The strength of the anterior cruciate ligament in humans and Rhesus monkeys, J. Bone Joint Surg. Am, 58, pp. 1074-1082, (1976); Pioletti D.P., Rakotomanana L.R., Benvenuti J.F., Leyvraz P.F., Viscoelastic constitutive law in large deformations: Application to human knee ligaments and tendons, J. Biomech, 31, pp. 753-757, (1998); Pioletti D.P., Rakotomanana L.R., Leyvraz P.F., Strain rate effect on the mechanical behavior of the anterior cruciate ligament-bone complex, Med. Eng. Phys, 21, pp. 95-100, (1999); Schumacher T.C., Tushtev K., Wagner U., Becker C., grosse Holthaus M., Hein S.B., Haack J., Heiss C., Engelhardt M., El Khassawna T., Rezwan K., A novel, hydroxyapatite-based screw-like device for anterior cruciate ligament (ACL) reconstructions, Knee, (2017); Shelburne K.B., Kim H.J., Sterett W.I., Pandy M.G., Effect of posterior tibial slope on knee biomechanics during functional activity, J. Orthop. Res, 29, pp. 223-231, (2011); Subramanium, Law inrelation to medical men, Med. Jurisprud. Toxicol, (1999); Taylor D.C., Dalton J.D., Seaber A. V, Garrett W.E., Viscoelastic properties of muscle-tendon units, Am. J. Sports Med, 18, pp. 300-309, (1990); Trent P.S., Walker P.S., Wolf B., Ligament length patterns, strength, and rotational axes of the knee joint, Clin. Orthop. Relat. Res, pp. 263-270, (1976); De Vita R., Slaughter W.S., A structural constitutive model for the strain rate-dependent behavior of anterior cruciate ligaments, Int. J. Solids Struct, 43, pp. 1561-1570, (2006); Woo S.L.Y., Hollis J.M., Adams D.J., Lyon R.M., Takai S., Tensile properties of the human femur-anterior cruciate ligament-tibia complex the effects of specimen age and orientation, Am J Sport. Med, 19, pp. 217-225, (1991)","D. Kalyanasundaram; Indian Institute of Technology Delhi, IIT Delhi, New Delhi, 298, Block 2, Hauz Khas, 110016, India; email: dineshk.iitdelhi@gmail.com","","Institute of Machine Design and Operation","1509409X","","","34846012","English","Acta Bioeng. Biomech.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-85105076689" "Jain N.; Murray D.; Kemp S.; Calder J.","Jain, Neil (56152231800); Murray, David (57196912600); Kemp, Steve (56222102500); Calder, James (57219236573)","56152231800; 57196912600; 56222102500; 57219236573","High-Speed Video Analysis of Syndesmosis Injuries in Soccer—Can It Predict Injury Mechanism and Return to Play? A Pilot Study","2018","Foot and Ankle Orthopaedics","3","3","","","","","4","10.1177/2473011418780429","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85055923903&doi=10.1177%2f2473011418780429&partnerID=40&md5=64da3bc2fa4418b0aa3fbff62faa6cce","Manchester Institute of Health Performance, Manchester, United Kingdom; The Football Association, Burton-upon-Trent, United Kingdom; Department of Bioengineering, Imperial College, Fortius Clinic, London, United Kingdom","Jain N., Manchester Institute of Health Performance, Manchester, United Kingdom; Murray D., Manchester Institute of Health Performance, Manchester, United Kingdom; Kemp S., The Football Association, Burton-upon-Trent, United Kingdom; Calder J., Department of Bioengineering, Imperial College, Fortius Clinic, London, United Kingdom","Background: Ankle syndesmosis injuries in professional soccer may lead to an unpredictable and prolonged recovery. This injury has been investigated in anatomical and radiologic studies but the precise mechanism leading to syndesmosis injury is not well understood and remains debated. The 2 goals of this study were to (1) evaluate the relationship between the mechanism of syndesmosis injury as determined by high-speed video analysis and the injured structures identified by clinical and radiologic examination and to (2) investigate the relationship between mechanism of injury and time of return to play. Methods: This pilot study prospectively reviewed high-speed video analysis of 12 professional soccer players who sustained syndesmosis injuries. The mechanism of injury was compared with the clinical and MRI evaluation and the time taken to return to play. Results: Higher-grade syndesmosis injuries occurred during ankle external rotation with dorsiflexion. Supination-inversion injuries with a standard lateral ankle sprain (rupture of the anterior talofibular ligament) may extend proximally, causing a lower-grade syndesmosis injury. These may present with signs of a high ankle sprain but have a quicker return to sport than those following a dorsiflexion-external rotation injury (mean 26 days vs 91 days). Conclusions: Video analysis confirmed that at least 2 mechanisms may result in injury to the ankle syndesmosis. Those “simple” ankle sprains with signs of syndesmosis injury had a quicker return to play. This new finding may be used by club medical teams during their initial assessment and help predict the expected time away from soccer in players with suspected high ankle sprains. Level of Evidence: Level IV, retrospective cohort study. © The Author(s) 2018.","Ankle injury; biomechanics; soccer injuries; syndesmosis injury; video analysis","","Beumer A., van Hemert W.L., Niesing R., Radiographic measurement of the distal tibiofibular syndesmosis has limited use, Clin Orthop Relat Res, 423, pp. 227-234, (2004); Boytim M.J., Fischer D.A., Neumann L., Syndesmotic ankle sprains, Am J Sports Med, 19, 3, pp. 294-298, (1991); Brown K.W., Morrison W.E., Schwetzer M.E., Parellada A., Nothnagel H., MRI findings associated with distal tibiofibular syndesmosis injuries, AJR Am J Roentgenol, 182, 1, pp. 131-136, (2004); Calder J.D., Bamford R., Petrie A., McCollum G., Stable versus unstable grade II high ankle sprains: a prospective study predicting the need for surgical stabilization and time to return to sports, Arthroscopy, 32, 4, pp. 634-642, (2016); Dattani R., Patnaik S., Kantak A., Srikanth B., Selvan T.P., Injuries to the tibiofibular syndesmosis, J Bone Joint Surg Br, 90, 4, pp. 405-410, (2008); Edwards G.S., DeLee J.C., Ankle diastasis without fracture, Foot Ankle, 4, 6, pp. 305-312, (1984); Fong D.T., Hong Y., Chan L.K., Yung P.S., Chan K.M., A systematic review on ankle injury and ankle sprain in sports, Sports Med, 37, 1, pp. 73-94, (2007); Fritschy D., An unusual ankle injury in top skiers, Am J Sports Med, 17, 2, pp. 282-286, (1989); Gerber J.P., Williams G.N., Scoville C.R., Arciero R.A., Taylor D.C., Persistent disability associated with ankle sprains: A prospective examination of an athletic population, Foot Ankle, 19, 10, pp. 653-660, (1998); Golano P., Vega J., de Leeuw P.A., Et al., Anatomy of the ankle ligaments: a pictorial essay, Knee Surg Sports Traumatol Arthrosc, 24, 4, pp. 944-956, (2016); Hawkins R.D., Fuller C.W., A prospective epidemiological study of injuries in four English professional football clubs, Br J Sports Med, 33, 3, pp. 196-203, (1999); Hermans J.J., Beumer A., de Jong T.A., Kleinrensink G.J., Anatomy of the distal tibiofibular syndesmosis in adults: a pictorial essay with a multimodality approach, J Anat, 217, 6, pp. 633-645, (2010); Hopkinson W.J., St Pierre P., Ryan J.B., Wheeler J.H., Syndesmosis sprains of the ankle, Foot Ankle, 10, 6, pp. 325-330, (1990); Jones M.H., Amendola A., Syndesmosis sprains of the ankle: a systematic review, Clin Orthop Relat Res, 455, pp. 173-175, (2007); Kannus P., Renstrom P., Treatment for acute tears of the lateral ligaments of the ankle: operation, cast, or early controlled mobilization, J Bone Joint Surg Am, 73, 2, pp. 305-312, (1991); MacAuley D., Ankle injuries: same joint, different sports, Med Sci Sports Exerc, 31, 7 suppl, pp. S409-S411, (1993); McCollum G.A., van den Bekerom M.P., Kerkhoffs G.M., Calder J.D., van Dijk C.N., Syndesmosis and deltoid ligament injuries in the athlete, Knee Surg Sports Traumatol Arthrosc, 21, 6, pp. 1328-1337, (2013); Milz P., Milz S., Steinborn M., Mittlmeier T., Putz R., Reiser M., Lateral ankle ligaments and tibiofibular syndesmosis. 13-MHz high-frequency sonography and MRI compared in 20 patients, Acta Orthop Scand, 69, 1, pp. 51-55, (1998); Rammelt S., Zwipp H., Grass R., Injuries to the distal tibio-fibular syndesmosis: an evidence-based approach to acute and chronic lesions, Foot Ankle Clin, 13, pp. 611-633, (2008); Uys H.D., Rijke A.M., Clinical association of acute lateral ankle sprain with syndesmotic involvement: a stress radiography and magnetic resonance imaging study, Am J Sports Med, 30, 6, pp. 816-822, (2002); van Dijk C.N., Mol B.W., Lim L.S., Marti R.K., Bossuyt P.M., Diagnosis of ligament rupture of the ankle joint. Physical examination, arthrography, stress radiography and sonography compared in 160 patients after inversion trauma, Acta Orthop Scand, 67, 6, pp. 566-570, (1996); Woods C., Hawkins R., Hulse M., Hodson A., The Football Association Medical Research Programme: an audit of injuries in professional football: an analysis of ankle sprains, Br J Sports Med, 37, 3, pp. 233-238, (2003); Wright R.W., Barlie J., Surprenant D.A., Matava M.J., Ankle syndesmosis sprains in national hockey league players, Am J Sports Med, 32, 8, pp. 1941-1945, (2004); Xenos J.S., Hopkinson W.J., Mulligan M.E., Olson E.J., Popovic N.A., The tibiofibular syndesmosis: evaluation of the ligamentous structures, methods of fixation, and radiographic assessment, J Bone Joint Surg Am, 77, 6, pp. 847-856, (1995)","J. Calder; Department of Bioengineering, Imperial College, London, Fortius Clinic, United Kingdom; email: james.calder@fortiusclinic.com","","SAGE Publications Inc.","24730114","","","","English","Foot. Ankle. Orthop.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85055923903" "Mieda T.; Kokubu M.","Mieda, Takumi (57212025186); Kokubu, Masahiro (55863363300)","57212025186; 55863363300","Blind footballers direct their head towards an approaching ball during ball trapping","2020","Scientific Reports","10","1","20246","","","","2","10.1038/s41598-020-77049-3","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096308015&doi=10.1038%2fs41598-020-77049-3&partnerID=40&md5=b538b082882ceee073f6b4d096b6c58b","Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8574, Ibaraki, Japan; Faculty of Health and Sport Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8574, Ibaraki, Japan","Mieda T., Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8574, Ibaraki, Japan; Kokubu M., Faculty of Health and Sport Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8574, Ibaraki, Japan","In blind football, players predict the sound location of a ball to underpin the success of ball trapping. It is currently unknown whether blind footballers use head movements as a strategy for trapping a moving ball. This study investigated characteristics of head rotations in blind footballers during ball trapping compared to sighted nonathletes. Participants performed trapping an approaching ball using their right foot. Head and trunk rotation angles in the sagittal plane, and head rotation angles in the horizontal plane were measured during ball trapping. The blind footballers showed a larger downward head rotation angle, as well as higher performance at the time of ball trapping than did the sighted nonathletes. However, no significant differences between the groups were found with regards to the horizontal head rotation angle and the downward trunk rotation angle. The blind footballers consistently showed a larger relative angle of downward head rotation from an early time point after ball launching to the moment of ball trapping. These results suggest that blind footballers couple downward head rotation with the movement of an approaching ball, to ensure that the ball is kept in a consistent egocentric direction relative to the head throughout ball trapping. © 2020, The Author(s).","","Adult; Biomechanical Phenomena; Blindness; Case-Control Studies; Head Movements; Humans; Male; Soccer; Young Adult; adult; article; female; foot; football player; head movement; human; human experiment; male; trunk; biomechanics; blindness; case control study; head movement; soccer; young adult","Magno Silva M.P., Morato M.P., Bilzon J.L., Duarte E., Sports injuries in Brazilian blind footballers, Int. J. Sports Med., 34, pp. 239-243, (2013); Doucet M.E., Et al., Blind subjects process auditory spectral cues more efficiently than sighted individuals, Exp. Brain Res., 160, pp. 194-202, (2005); Velten M.C., Blasing B., Portes L., Hermann T., Schack T., Cognitive representation of auditory space in blind football experts, Psychol. Sport Exerc., 15, pp. 441-445, (2014); Velten M.C., Ugrinowitsch H., Portes L.L., Hermann T., Blasing B., Auditory spatial concepts in blind football experts, Psychol. Sport Exerc., 22, pp. 218-228, (2016); Middlebrooks J.C., Green D.M., Sound localization by human listeners, Annu. Rev. Psychol., 42, pp. 135-159, (1991); Grothe B., Pecka M., McAlpine D., Mechanisms of sound localization in mammals, Physiol. Rev., 90, pp. 983-1012, (2010); Letowski T.R., Letowski S.T., Auditory spatial perception: Auditory localization, Army Research Laboratory Aberdeen Proving Ground MD Human Research and Engineering Directorate, (2012); Mieda T., Kokubu M., Saito M., Rapid identification of sound direction in blind footballers, Exp. Brain Res., 237, pp. 3221-3231, (2019); Perrett S., Noble W., The contribution of head motion cues to localization of low-pass noise, Percept. 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Neurosci., 8, (2014); Lentz J.J., Psychoacoustics: Perception of Normal and Impaired Hearing with Audiology Applications, pp. 183-184, (2018); Stevens S.S., Newman E.B., The localization of actual sources of sound, Am. J. Psychol., 48, pp. 297-306, (1936); Mills A.W., On the minimum audible angle, J. Acoust. Soc. Am., 30, pp. 237-246, (1958); Makous J.C., Middlebrooks J.C., Two-dimensional sound localization by human listeners, J. Acoust. Soc. Am., 87, pp. 2188-2200, (1990); Aggius-Vella E., Campus C., Finocchietti S., Gori M., Audio spatial representation around the body, Front. Psychol., 8, (2017); Boyer E.O., Et al., From ear to hand: The role of the auditory-motor loop in pointing to an auditory source, Front. Comput. Neurosci., 7, (2013); Mann D.L., Spratford W., Abernethy B., The head tracks and gaze predicts: How the world’s best batters hit a ball, PLoS ONE, 8, (2013); Fogt N.F., Zimmerman A.B., A method to monitor eye and head tracking movements in college baseball players, Optom. Vis. Sci., 91, pp. 200-211, (2014); Kishita Y., Ueda H., Kashino M., Eye and head movements of elite baseball players in real batting, Front. Sports Act. Living., 2, (2020); Kishita Y., Ueda H., Kashino M., Temporally coupled coordination of eye and body movements in baseball batting for a wide range of ball speeds, Front. Sports Act. Living, 2, (2020); Altmann C.F., Wilczek E., Kaiser J., Processing of auditory location changes after horizontal head rotation, J. 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Neurosci., 18, pp. 149-157, (2006); Arnaud L., Gracco V., Menard L., Enhanced perception of pitch changes in speech and music in early blind adults, Neuropsychologia., 117, pp. 261-270, (2018); Gougoux F., Et al., Pitch discrimination in the early blind: People blinded in infancy have sharper listening skills than those who lost their sight later, Nature, 430, (2004); Wan C.Y., Wood A.G., Reutens D.C., Wilson S.J., Early but not late-blindness leads to enhanced auditory perception, Neuropsychologia., 48, pp. 344-348, (2010); Lewald J., Exceptional ability of blind humans to hear sound motion: implications for the emergence of auditory space, Neuropsychologia., 51, pp. 181-186, (2013); Vercillo T., Tonelli A., Gori M., Intercepting a sound without vision, PLoS ONE, 12, (2017); Vercillo T., Tonelli A., Gori M., Early visual deprivation prompts the use of body-centered frames of reference for auditory localization, Cognition, 170, pp. 263-269, (2018)","T. Mieda; Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, 1-1-1 Tennodai, 305-8574, Japan; email: taku.mie48@gmail.com","","Nature Research","20452322","","","33219244","English","Sci. Rep.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85096308015" "Nelson K.M.; Daidone E.H.K.; Breedlove K.M.; Bradney D.A.; Bowman T.G.","Nelson, Katelyn M. (57210154475); Daidone, Elizabeth H. K. (57222635835); Breedlove, Katherine M. (56338287000); Bradney, Debbie A. (16444215400); Bowman, Thomas G. (16444284500)","57210154475; 57222635835; 56338287000; 16444215400; 16444284500","Head impact characteristics based on player position in collegiate soccer athletes","2021","International Journal of Athletic Therapy and Training","26","2","","111","115","4","2","10.1123/ijatt.2019-0095","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85103590037&doi=10.1123%2fijatt.2019-0095&partnerID=40&md5=00cca869cdec7ff2bed744c9427912cb","Department of Athletic Training, University of Lynchburg, Lynchburg, VA, United States; Center for Clinical Spectroscopy, Brigham and Women’s Hospital, Boston, MA, United States; Harvard Medical School, Boston, MA, United States","Nelson K.M., Department of Athletic Training, University of Lynchburg, Lynchburg, VA, United States; Daidone E.H.K., Department of Athletic Training, University of Lynchburg, Lynchburg, VA, United States; Breedlove K.M., Center for Clinical Spectroscopy, Brigham and Women’s Hospital, Boston, MA, United States, Harvard Medical School, Boston, MA, United States; Bradney D.A., Department of Athletic Training, University of Lynchburg, Lynchburg, VA, United States; Bowman T.G., Department of Athletic Training, University of Lynchburg, Lynchburg, VA, United States","The study objective was to determine the magnitude and frequency of head impacts in NCAA Division III soccer athletes based on player position and type of play (offense, defense, transition). Across player position, male and female soccer defenders sustained the most head impacts (males IR = 18.89, 95% CI = 16.89–20.89; females IR = 8.45, 95% CI = 7.25–9.64; IRR = 2.23, 95% CI = 1.87–2.67). The study revealed a nonstatistically significant interaction between sex, player position, and type of play for both linear (p = .42) and rotational accelerations (p = .16). Defenders sustained the majority of the head impacts in the study sample, suggesting preventative initiatives should be focused on back row players. © 2021 Human Kinetics, Inc.","Futbol; Head impact biomechanics; Impact sensor; XPatch","","Mueller FO., Catastrophic head injuries in high school and collegiate sports, J Athl Train, 36, 3, (2001); O'Kane JW, Spieker A, Levy MR, Neradilek M, Polissar NL, Schiff MA., Concussion among female middle-school soccer players, JAMA Pediatr, 168, 3, pp. 258-264, (2014); McCrory P, Meeuwisse W, Dvorak J, Et al., Consensus statement on concussion in sport—the 5th international conference on concussion in sport held in Berlin, October 2016, Br J Sports Med, 51, 11, pp. 838-847, (2017); Zhang MR, Red SD, Lin AH, Patel SS, Sereno AB., Evidence of cognitive dysfunction after soccer playing with ball heading using a novel tablet-based approach, PLoS One, 8, 2, (2013); Witol AD, Webbe FM., Soccer heading frequency predicts neuropsy-chological deficits, Arch Clin Neuropsychol, 18, 4, pp. 397-417, (2003); Lipton ML, Kim N, Zimmerman ME, Et al., Soccer heading is associated with white matter microstructural and cognitive abnormali-ties, Radiology, 268, 3, pp. 850-857, (2013); Naunheim RS, Standeven J, Richter C, Lewis LM., Comparison of impact data in hockey, football, and soccer, J Trauma Acute Care, 48, 5, pp. 938-941, (2000); Reynolds BB, Patrie J, Henry EJ, Et al., Effects of sex and event type on head impact in collegiate soccer, Orthop J Sports Med, 5, 4, pp. 1-10, (2017); Lamond LC, Caccese JB, Buckley TA, Glutting J, Kaminski TW., Linear acceleration in direct head contact across impact type, player position, and playing scenario in collegiate women’s soccer players, J Athl Train, 53, 2, pp. 115-121, (2018); Press JN, Rowson S., Quantifying head impact exposure in collegiate women’s soccer, Clin J Sport Med, 27, 2, pp. 104-110, (2017); Lynall RC, Clark MD, Grand EE, Et al., Head impact biomechanics in women’s college soccer, Med Sci Sports Exerc, 48, 9, pp. 1772-1778, (2016); McCuen E, Svaldi D, Breedlove K, Et al., Collegiate women’s soccer players suffer greater cumulative head impacts than their high school counterparts, J Biomech, 48, 13, pp. 3720-3723, (2015); Sport sponsorship, par-ticipation, and demographics search, (2016); Dvorak J, McCrory P, Kirkendall DT., Head injuries in the female football player: incidence, mechanisms, risk factors and management, Br J Sports Med, 41, pp. i44-i46, (2007); Ng TP, Bussone WR, Duma SM., The effect of gender and body size on linear accelerations of the head observed during daily activities, Biomed Sci Instrum, 42, pp. 25-30, (2006); Cummiskey B, Schiffmiller D, Talavage TM, Et al., Reliability and accuracy of helmet-mounted and head-mounted devices used to measure head accelerations, Proc Inst Mech Eng P, 231, 2, pp. 144-153, (2017); Wu LC, Nangia V, Bui K, Et al., In vivo evaluation of wearable head impact sensors, Ann Biomed Eng, 44, 4, pp. 1234-1245, (2016); Cortes N, Lincoln AE, Myer GD, Et al., Video analysis verification of head impact events measured by wearable sensors, Am J Sports Med, 45, 10, pp. 2379-2387, (2017); Knowles SB, Marshall SW, Guskiewicz KM., Issues in estimating risks and rates in sports injury research, J Athl Train, 41, 2, (2006); Garstecki MA, Latin RW, Cuppett MM., Comparison of selected physical fitness and performance variables between NCAA Division I and II football players, J Strength Cond Res, 18, 2, pp. 292-297, (2004); Sawyer DT, Ostarello JZ, Suess EA, Dempsey M., Relationship between football playing ability and selected performance measures, J Strength Cond Res, 16, 4, pp. 611-616, (2002); Stuempfle KJ, Katch FI, Petrie DF., Body composition relates poorly to performance tests in NCAA Division III football players, J Strength Cond Res, 17, 2, pp. 238-244, (2003)","T.G. Bowman; Department of Athletic Training, University of Lynchburg, Lynchburg, United States; email: Bowman.t@lynchburg.edu","","Human Kinetics Publishers Inc.","21577277","","","","English","Inter. J","Article","Final","","Scopus","2-s2.0-85103590037" "Satkunskiene D.; da Silva T.M.; Kamandulis S.; Leite N.M.C.; Domeika A.; Mickevicius M.; Snieckus A.","Satkunskiene, Danguole (8447824200); da Silva, Tiago M. (57220049839); Kamandulis, Sigitas (16245038000); Leite, Nuno M. C. (35224978400); Domeika, Aurelijus (26430904300); Mickevicius, Mantas (56976391200); Snieckus, Audrius (36835854600)","8447824200; 57220049839; 16245038000; 35224978400; 26430904300; 56976391200; 36835854600","Effect of training and match loads on hamstring passive stiffness in professional soccer players","2020","Journal of Musculoskeletal Neuronal Interactions","20","4","","488","497","9","3","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096664529&partnerID=40&md5=dbef52704b21aa6b4383bf5a2f9bde0d","Institute of Sports Science and Innovation, Lithuanian Sports University, Kaunas, Lithuania; University of Trás-os-Montes and Alto Douro, Vila Real, Portugal; Research Center in Sports Sciences, Health Sciences and Human Development, CIDESD, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal; Kaunas University of Technology, Kaunas, Lithuania","Satkunskiene D., Institute of Sports Science and Innovation, Lithuanian Sports University, Kaunas, Lithuania; da Silva T.M., University of Trás-os-Montes and Alto Douro, Vila Real, Portugal; Kamandulis S., Institute of Sports Science and Innovation, Lithuanian Sports University, Kaunas, Lithuania; Leite N.M.C., Research Center in Sports Sciences, Health Sciences and Human Development, CIDESD, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal; Domeika A., Kaunas University of Technology, Kaunas, Lithuania; Mickevicius M., Institute of Sports Science and Innovation, Lithuanian Sports University, Kaunas, Lithuania; Snieckus A., Institute of Sports Science and Innovation, Lithuanian Sports University, Kaunas, Lithuania","Objective: the purpose of this study was to identify differences in hamstring passive stiffness between the pre-season and in-season periods. Methods: Hamstring strength and passive stiffness were measured in professional male soccer players before and after the pre-season (4 weeks), and after the in-season (6 weeks) periods using an isokinetic dynamometer. Muscle passive stiffness was determined from the slope of the passive torque–angle relationship. External loads (acceleration and jumps) were monitored by GPS and internal loads by questionnaire. Results: Hamstring passive stiffness increased after 10 weeks of training and matches, without changes in passive peak torque and range of motion. The hamstring passive stiffness modifications were associated with the volume and intensity of accelerations and jumps. The individual data analysis also provided some support for the suppression of the biomechanical adaptation in the subjects with relatively large external load. Conclusions: Regular training and match workouts increase hamstring passive stiffness in professional soccer players but the adaptation of muscle-tendon unit passive elements might not occur if players experience excessive mechanical stress. © 2020, International Society of Musculoskeletal and Neuronal Interactions. All rights reserved.","Adaptation Effect; Jump; Running; Serial Elastic; Strength","Adaptation, Physiological; Adult; Athletes; Exercise; Hamstring Muscles; Humans; Male; Muscle Strength; Muscle Tonus; Soccer; acceleration; adaptation; adult; Article; biomechanics; hamstring muscle; human; human experiment; jumping; male; mechanical stress; muscle rigidity; muscle strength; normal human; passive movement; range of motion; running; soccer player; torque; training; athlete; exercise; hamstring muscle; muscle tone; physiology; soccer","Ekstrand J, Healy JC, Walden M, Lee JC, English B, Hagglund M., Hamstring muscle injuries in professional football: the correlation of MRI findings with return to play, British Journal of Sports Medicine, 46, 2, pp. 112-117, (2012); Impellizzeri FM, Marcora SM, Coutts AJ., Internal and external training load: 15 years on, International journal of sports physiology and performance, 14, 2, pp. 270-273, (2019); Bengtsson H, Ekstrand J, Hagglund M., Muscle injury rates in professional football increase with fixture congestion: an 11-year follow-up of the UEFA Champions League injury study, Br J Sports Med, 47, 12, pp. 743-747, (2013); 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Brown SH, Carr JA, Ward SR, Lieber RL., Passive mechanical properties of rat abdominal wall muscles suggest an important role of the extracellular connective tissue matrix, Journal of Orthopaedic Research, 30, 8, pp. 1321-1326, (2012); Bojsen-Moller J, Magnusson SP, Rasmussen LR, Kjaer M, Aagaard P., Muscle performance during maximal isometric and dynamic contractions is influenced by the stiffness of the tendinous structures, Journal of Applied Physiology, 99, 3, pp. 986-994, (2005); Guilhem G, Doguet V, Hauraix H, Lacourpaille L, Jubeau M, Nordez A, Dorel S., Muscle force loss and soreness subsequent to maximal eccentric contractions depend on the amount of fascicle strain in vivo, Acta Physiologica, 217, 2, pp. 152-163, (2016); Konow N, Roberts TJ., The series elastic shock absorber: tendon elasticity modulates energy dissipation by muscle during burst deceleration, Proceedings of the Royal Society of London B: Biological Sciences, 282, 1804, (2015); Fletcher JR, Esau SP, MacIntosh BR., Changes in tendon stiffness and running economy in highly trained distance runners, European journal of applied physiology, 110, 5, pp. 1037-1046, (2010); 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Gerodimos V, Mandou V, Zafeiridis A, Ioakimidis P, Stavropoulos N, Kellis S., Isokinetic peak torque and hamstring/quadriceps ratios in young basketball players. 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Haddad M, Stylianides G, Djaoui L, Dellal A, Chamari K., Session-RPE method for training load monitoring: validity, ecological usefulness, and influencing factors, Frontiers in neuroscience, 11, (2017); Bohm S, Mersmann F, Arampatzis A., Human tendon adaptation in response to mechanical loading: a systematic review and meta-analysis of exercise intervention studies on healthy adults, Sports medicine-open, 1, 1, (2015); Morin J-B, Gimenez P, Edouard P, Arnal P, Jimenez-Reyes P, Samozino P, Brughelli M, Mendiguchia J., Sprint acceleration mechanics: the major role of hamstrings in horizontal force production, Frontiers in physiology, 6, (2015); Higashihara A, Nagano Y, Ono T, Fukubayashi T., Differences in activation properties of the hamstring muscles during overground sprinting, Gait & posture, 42, 3, pp. 360-364, (2015); Chappell JD, Creighton RA, Giuliani C, Yu B, Garrett WE., Kinematics and electromyography of landing preparation in vertical stop-jump: risks for noncontact anterior cruciate ligament injury, The American journal of sports medicine, 35, 2, pp. 235-241, (2007); Bartlett JL, Sumner B, Ellis RG, Kram R., Activity and functions of the human gluteal muscles in walking, running, sprinting, and climbing, American journal of physical anthropology, 153, 1, pp. 124-131, (2014); Janecki D, Jarocka E, Jaskolska A, Marusiak J, Jaskolski A., Muscle passive stiffness increases less after the second bout of eccentric exercise compared to the first bout, Journal of science and medicine in sport, 14, 4, pp. 338-343, (2011); Kjaer M., Role of extracellular matrix in adaptation of tendon and skeletal muscle to mechanical loading, Physiological reviews, 84, 2, pp. 649-698, (2004); Tardieu C, Tabary J, Tabary C, Tardieu G., Adaptation of connective tissue length to immobilization in the lengthened and shortened positions in cat soleus muscle, Journal de physiologie, 78, 2, pp. 214-220, (1982); Kjaer M, Langberg H, Heinemeier K, Bayer M, Hansen M, Holm L, Doessing S, Kongsgaard M, Krogsgaard M, Magnusson S., From mechanical loading to collagen synthesis, structural changes and function in human tendon, Scandinavian journal of medicine & science in sports, 19, 4, pp. 500-510, (2009); Miller BF, Olesen JL, Hansen M, Dossing S, Crameri RM, Welling RJ, Langberg H, Flyvbjerg A, Kjaer M, Babraj JA., Coordinated collagen and muscle protein synthesis in human patella tendon and quadriceps muscle after exercise, The Journal of physiology, 567, 3, pp. 1021-1033, (2005); Williams P, Goldspink G., Connective tissue changes in immobilised muscle, Journal of Anatomy, 138, (1984); Ahtikoski A, Koskinen S, Virtanen P, Kovanen V, Takala T., Regulation of synthesis of fibrillar collagens in rat skeletal muscle during immobilization in shortened and lengthened positions, Acta physiologica scandinavica, 172, 2, pp. 131-140, (2001); Akeson W, Amiel D, Mechanic G, Woo SL, Harwood F, Hamer M., Collagen cross-linking alterations in joint contractures: changes in the reducible cross-links in periarticular connective tissue collagen after nine weeks of immobilization, Connective tissue research, 5, 1, pp. 15-19, (1977); Sleboda DA, Roberts TJ., Incompressible fluid plays a mechanical role in the development of passive muscle tension, Biology letters, 13, 1, (2017); Magnusson SP, Langberg H, Kjaer M., The pathogenesis of tendinopathy: balancing the response to loading, Nature Reviews Rheumatology, 6, 5, (2010); Spiesz EM, Thorpe CT, Chaudhry S, Riley GP, Birch HL, Clegg PD, Screen HR., Tendon extracellular matrix damage, degradation and inflammation in response to in vitro overload exercise, Journal of Orthopaedic Research, 33, 6, pp. 889-897, (2015); Kjaer M, Magnusson P, Krogsgaard M, Moller JB, Olesen J, Heinemeier K, Hansen M, Haraldsson B, Koskinen S, Esmarck B., Extracellular matrix adaptation of tendon and skeletal muscle to exercise, Journal of anatomy, 208, 4, pp. 445-450, (2006); Muanjai P, Jones DA, Mickevicius M, Satkunskiene D, Snieckus A, Rutkauskaite R, Mickeviciene D, Kamandulis S., The effects of 4 weeks stretching training to the point of pain on flexibility and muscle tendon unit properties, European journal of applied physiology, 117, 8, pp. 1713-1725, (2017); Kubo K, Ikebukuro T, Maki A, Yata H, Tsunoda N., Time course of changes in the human Achilles tendon properties and metabolism during training and detraining in vivo, European journal of applied physiology, 112, 7, pp. 2679-2691, (2012); Kubo K, Ikebukuro T, Yata H, Tsunoda N, Kanehisa H., Time course of changes in muscle and tendon properties during strength training and detraining, The Journal of Strength & Conditioning Research, 24, 2, pp. 322-331, (2010); Kubo K, Morimoto M, Komuro T, Yata H, Tsunoda N, Kanehisa H, Fukunaga T., Effects of plyometric and weight training on muscle-tendon complex and jump performance, Medicine and science in sports and exercise, 39, 10, pp. 1801-1810, (2007)","M. Mickevicius; Institute of Sports Science and Innovation, Lithuanian Sports University, Kaunas, Sporto g. 6, LT-44221, Lithuania; email: mantas.mickevicius@lsu.lt","","International Society of Musculoskeletal and Neuronal Interactions","11087161","","JMNIB","33265076","English","J. Musculoskelet. Neuronal Interact.","Article","Final","","Scopus","2-s2.0-85096664529" "Bijman M.P.; Fisher J.J.; Vallis L.A.","Bijman, M.P. (56593077200); Fisher, J.J. (56784895400); Vallis, L.A. (6603307813)","56593077200; 56784895400; 6603307813","How does visual manipulation affect obstacle avoidance strategies used by athletes?","2016","Journal of Sports Sciences","34","10","","915","922","7","3","10.1080/02640414.2015.1078486","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84958179118&doi=10.1080%2f02640414.2015.1078486&partnerID=40&md5=83ffd6622e51c280e23253f5c62574b0","Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Canada","Bijman M.P., Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Canada; Fisher J.J., Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Canada; Vallis L.A., Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Canada","Research examining our ability to avoid obstacles in our path has stressed the importance of visual input. The aim of this study was to determine if athletes playing varsity-level field sports, who rely on visual input to guide motor behaviour, are more able to guide their foot over obstacles compared to recreational individuals. While wearing kinematic markers, eight varsity athletes and eight age-matched controls (aged 18–25) walked along a walkway and stepped over stationary obstacles (180° motion arc). Visual input was manipulated using PLATO visual goggles three or two steps pre-obstacle crossing and compared to trials where vision was given throughout. A main effect between groups for peak trail toe elevation was shown with greater values generated by the controls for all crossing conditions during full vision trials only. This may be interpreted as athletes not perceiving this obstacle as an increased threat to their postural stability. Collectively, findings suggest the athletic group is able to transfer their abilities to non-specific conditions during full vision trials; however, varsity-level athletes were equally reliant on visual cues for these visually guided stepping tasks as their performance was similar to the controls when vision is removed. © 2015 Taylor & Francis.","athletes; locomotion; navigation; obstacle; Vision","Adult; Athletes; Biomechanical Phenomena; Case-Control Studies; Foot; Humans; Locomotion; Male; Psychomotor Performance; Soccer; Space Perception; Vision, Ocular; Young Adult; adult; athlete; biomechanics; case control study; depth perception; foot; human; locomotion; male; psychomotor performance; soccer; vision; young adult","Berard J.R., Vallis L.A., Characteristics of single and double obstacle avoidance strategies: A comparison between adults and children, Experimental Brain Research, 175, 1, pp. 21-31, (2006); Chen H.-C., Ashton-Miller J.A., Alexander N.B., Schultz A.B., Stepping over obstacles: Gait patterns of healthy young and old adults, Journal of Gerontology, 46, pp. 196-203, (1991); Chen H.-C., Ashton-Miller J.A., Alexander N.B., Schultz A.B., Age effects on strategies used to avoid obstacles, Gait & Posture, 2, pp. 139-146, (1994); Chen H.-C., Schultz A.B., Ashton-Miller J.A., Giordani B., Alexander N., Guire K.E., Stepping over obstacles: Dividing attention impairs performance of old more than young adults, TheJournals of Gerontology Series A: Biological Sciences and Medical Sciences, 51A, pp. 116-122, (1996); Elias L.J., Bryden M.P., Bulman-Fleming M.B., Footedness is a better predictor than is handedness of emotional lateralization, Neuropsychologia, 36, pp. 37-43, (1998); Faubert J., Professional athletes have extraordinary skills for rapidly learning complex and neutral dynamic visual scenes, Scientific Reports, 3, (2013); Gibson J.J., The ecological approach to visual perception, (1986); Heijnen M.J., Muir B.C., Rietdyk S., Factors leading to obstacle contact during adaptive locomotion, Experimental Brain Research, 223, pp. 219-231, (2012); Heijnen M.J., Romine N.L., Stumpf D.M., Rietdyk S., Memory-guided obstacle crossing: More failures were observed for the trail limb versus lead limb, Experimental Brain Research, 232, pp. 2131-2142, (2014); Kuyk T., Elliott J.L., Biehl J., Fuhr P.S., Environmental variables and mobility performance in adults with low vision, Optometry-Journal of the American Optometric Association, 67, 7, pp. 403-409, (1996); Memmert D., Simons D.J., Grimme T., The relationship between visual attention and expertise in sports, Psychology of Sport and Exercise, 10, pp. 146-151, (2009); Mohagheghi A.A., Moraes R., Patla A.E., The effects of distant and on-line visual information on the control of approach phase and step over an obstacle during locomotion, Experimental Brain Research, 155, pp. 459-468, (2004); Patla A.E., Greig M., Any way you look at it, successful obstacle negotiation needs visually guided on-line foot placement regulation during the approach phase, Neuroscience Letters, 397, pp. 110-114, (2006); Patla A.E., Vickers J.N., Where and when do we look as we approach and step over an obstacle in the travel path?, NeuroReport, 8, pp. 3661-3665, (1997); Patla A.E., Vickers J.N., How far ahead do we look when required to step on specific locations in the travel path during locomotion?, Experimental Brain Research, 148, pp. 133-138, (2003); Perrin P., Schneider D., Deviterne D., Perrot C., Constantinescu L., Training improves the adaptation to changing visual conditions in maintaining human posture control in a test of sinusoidal oscillation of the support, Neuroscience Letters, 245, pp. 155-158, (1998); Potter M.C., Wyble B., Hagmann C.E., McCourt E.S., Detecting meaning in RSVP at 13 ms per picture, Attention, Perception, & Psychophysics, 76, 2, pp. 270-279, (2014); Preatoni E., Ferrario M., Dona G., Hamill J., Rodano R., Motor variability in sports: A non-linear analysis of race walking, Journal of Sports Sciences, 28, 12, pp. 1327-1336, (2010); Rhea C.K., Rietdyk S., Influence of an unexpected perturbation on adaptive gait behavior, Gait & Posture, 34, pp. 439-441, (2011); Rietdyk S., Rhea C.K., The effect of the visual characteristics of obstacles on risk of tripping and gait parameters during locomotion, Ophthalmic & Physiological Optics: The Journal of the British College of Ophthalmic Opticians (Optometrists), 31, pp. 302-310, (2011); Weerdesteyn V., Nienhuis B., Duysens J., Advancing age progressively affects obstacle avoidance skills in the elderly, Human Movement Science, 24, pp. 865-880, (2005); Weerdesteyn V., Nienhuis B., Mulder T., Duysens J., Older women strongly prefer stride lengthening to shortening in avoiding obstacles, Experimental Brain Research, 161, pp. 39-46, (2005); Winter D.A., Patla A.E., Prince F., Ishac M., Gielo-Perczak K., Stiffness control of balance in quiet standing, Journal of Neurophysiology, 80, pp. 1211-1221, (1998)","L.A. Vallis; Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, 50 Stone Road East, N1G 2W1, Canada; email: lvallis@uoguelph.ca","","Routledge","02640414","","JSSCE","26291383","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-84958179118" "Carvalho D.D.S.; Ocarino J.M.; Cruz A.D.C.; Barsante L.D.; Teixeira B.G.; Resende R.A.; Fonseca S.T.; Souza T.R.","Carvalho, Diego da Silva (57221436662); Ocarino, Juliana Melo (23480457400); Cruz, Aline de Castro (57193651290); Barsante, Leonardo Drumond (57211426681); Teixeira, Breno Gonçalves (57222987877); Resende, Renan Alves (53264832000); Fonseca, Sérgio Teixeira (7005476583); Souza, Thales Rezende (6603712223)","57221436662; 23480457400; 57193651290; 57211426681; 57222987877; 53264832000; 7005476583; 6603712223","The trunk is exploited for energy transfers of maximal instep soccer kick: A power flow study","2021","Journal of Biomechanics","121","","110425","","","","4","10.1016/j.jbiomech.2021.110425","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104360036&doi=10.1016%2fj.jbiomech.2021.110425&partnerID=40&md5=4cb3c41ecfa0c1eef90b07326a31ba35","Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil; Movement Analysis Laboratory, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil; Department of Physical Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil","Carvalho D.D.S., Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil, Movement Analysis Laboratory, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil; Ocarino J.M., Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil, Movement Analysis Laboratory, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil, Department of Physical Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil; Cruz A.D.C., Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil, Movement Analysis Laboratory, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil; Barsante L.D., Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil, Movement Analysis Laboratory, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil; Teixeira B.G., Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil, Movement Analysis Laboratory, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil; Resende R.A., Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil, Movement Analysis Laboratory, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil, Department of Physical Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil; Fonseca S.T., Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil, Movement Analysis Laboratory, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil, Department of Physical Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil; Souza T.R., Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil, Movement Analysis Laboratory, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil, Department of Physical Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil","The purpose of this study was to investigate the angular kinetic energy transfers and expenditure among the trunk (bisegmented), the pelvis and the kick limb during maximal soccer instep kicking, and to characterize kicking kinetics and kinematics. Eighteen adult male amateur soccer players (24.0 ± 4.1 years old) were assessed. Three-dimensional kinematics and ground reaction force were measured. A 6-degrees-of-freedom model was assumed, comprising the upper trunk, lower trunk, pelvis, thigh, shank and foot, and the thoraco-lumbar, lumbo-pelvic, hip, knee, and ankle joints. Angular kinematics and joint moments were computed. Power flow analysis was done by calculating the joint powers (to describe joint-to-segments energy transfers) and the proximal and distal segment powers (to describe segment-to-segment transfers). Power, kinematic and kinetic time series were presented to describe the energy flows’ directions. The total mechanical energy expenditure (TMEE) at each joint was also calculated. The TMEEs pointed to substantial energy expenditure at the trunk (27% of the summed work produced by the analyzed joints). In the initial phases of kicking, the trunk generates downward energy flows from the upper to the lower trunk and from the lower trunk to the pelvis, and then to the lower limb, sequentially, which favors angular motions for ball contact. There is a formation and release of a tension arc only at the hip joint, and deceleration of the segments slightly sooner than ball contact, differently from theoretical accounts. There are energy flows, hitherto unknown, among the trunk, pelvis and kick limb, revealing mechanical strategies of kicking. © 2021 Elsevier Ltd","Biomechanics; Kinetic chain; Mechanical energy; Power flow; Soccer kicking","Adult; Biomechanical Phenomena; Foot; Humans; Knee Joint; Lower Extremity; Male; Soccer; Young Adult; Biomechanics; Biophysics; Electric load flow; Energy transfer; Joints (anatomy); Kinematics; Kinetic energy; Sports; Energy expenditure; Energy flow; Energy-transfer; Hip joints; Kinetic chain; Mechanical energies; Power; Power flow studies; Power flows; Soccer kicking; adult; ankle; article; biomechanics; deceleration; degree of freedom; energy expenditure; energy transfer; flow measurement; foot; ground reaction force; hip; human; kinematics; knee; male; motion; pelvis; soccer player; tension; theoretical study; thigh; time series analysis; trunk; biomechanics; lower limb; soccer; young adult; Kinetics","Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, J. Sports Sci., 24, 9, pp. 951-960, (2006); Augustus S., Mundy P., Smith N., Support leg action can contribute to maximal instep soccer kick performance: an intervention study, J. Sports Sci., 5, 1, pp. 89-98, (2017); Brophy R.H., Backus S.I., Pansy B.S., Lyman S., Williams R.J., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, J. Orthop. Sports Phys. Ther., 37, 5, pp. 260-368, (2007); Cappozzo A., Della Croce U., Leardini A., Chiari L., Human movement analysis using stereophotogrammetry. Part 1: theoretical background, Gait Post., 21, 2, pp. 226-237, (2005); Cross K.M., Gurka K.K., Saliba S., Conaway M., Hertel J., Comparison of hamstring strain injury rates between male and female intercollegiate soccer athletes, American J. Sports Med., 41, 4, pp. 742-748, (2013); De Leva P., Adjustments to Zatsiorsky–Seluyanov's segment inertia parameters, J. 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Biomech., 31, 5, pp. 370-376, (2015); Graci V., Van Dillen L.R., Salsich G.B., Gender differences in trunk, pelvis, and lower limb kinematics during a single leg squat, Gait Post., 36, 3, pp. 461-466, (2012); Hanavan E.P., A Mathematical Model of the Human Body (AMRL-TR-64-102), pp. 1-149, (1964); Iino Y., Kojima T., Validity of the top-down approach of inverse dynamics analysis in fast and large rotational trunk movements, J. Appl. Biomech., 28, pp. 420-430, (2012); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J. Sports Sci. Med., 6, pp. 154-165, (2007); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, J. Sports Sci., 28, 8, pp. 805-817, (2010); Lees A., Barton G., Robinson M., The influence of Cardan rotation sequence on angular orientation data for the lower limb in the soccer kick, J. Sports Sci., 28, 4, pp. 445-450, (2010); Lees A., Rahnama N., Variability and typical error in the kinematics and kinetics of the maximal instep kick in soccer, Sports Biomech., 12, 3, pp. 283-292, (2013); McGibbon C.A., Krebs D.E., Age-related changes in lower trunk coordination and energy transfer during gait, J. Neurophysiol., 85, 5, pp. 1923-1931, (2001); McGibbon C.A., Krebs D.E., Puniello M.S., Mechanical energy analysis identifies compensatory strategies in disabled elders’ gait, J. Biomech., 34, 4, pp. 481-490, (2001); Novak A.C., Li Q., Yang S., Brouwer B., Mechanical energy transfers across lower limb segments during stair ascent and descent in young and healthy older adults, Gait Post., 34, 3, pp. 384-390, (2011); Novak A.C., Li Q., Yang S., Brouwer B., Energy flow analysis of the lower extremity during gait in persons with chronic stroke, Gait Post., 41, 2, pp. 580-585, (2015); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med. Sci. Sports Exerc., 34, 12, pp. 2028-2036, (2002); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, J. Sports Sci., 24, 1, pp. 11-22, (2006); Prieske O., Muehlbauer T., Borde R., Gube M., Bruhn S., Et al., Neuromuscular and athletic performance following core strength training in elite youth soccer: role of instability, Scand. J. Med. Sci. Sports, 26, 1, pp. 48-56, (2016); Putnam C.A., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Med. Sci. Sports Exerc., 23, 1, pp. 130-141, (1991); Rahnama N., Reilly T., Lees A., Injury risk associated with playing actions during competitive soccer, Br. J. Sports Med., pp. 354-359, (2002); Robertson D.G.E., Mosher R.E., Work and power of the leg muscles in soccer kicking, Biomechanics IX-B, pp. 533-538, (1985); Robertson D.G., Caldwell G.E., Hamill J., Kamen G., Whittlesey S.N., Research Methods in Biomechanics, pp. 1-440, (2014); Robertson D.G., Winter D.A., Mechanical energy generation, absorption and transfer amongst segments during walking, J. Biomech., 13, 10, pp. 845-854, (1980); Serner A., Tol J.L., Jomaah N., Weir A., Whiteley R., Thorborg K., Et al., Diagnosis of Acute Groin Injuries: A Prospective Study of 110 Athletes, American J. Sports Med., 43, 8, pp. 1857-1864, (2015); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomech., 4, 1, pp. 59-72, (2005); Sinclair J., Fewtrell D., Taylor P.J., Bottoms L., Atkins S., Hobbs S.J., Three-dimensional kinematic correlates of ball velocity during maximal instep soccer kicking in males, European J. Sport Sci., 14, 8, pp. 799-805, (2014); Tojima M., Torii S., Difference in kick motion of adolescent soccer players in presence and absence of low back pain, Gait Post., 59, pp. 89-92, (2018); (2016); van der Krug E., van der Helm F.C.T., Veeger H.E.J., Schwab A.L., Power in sports: A literature review on the application, assumptions, and terminology of mechanical power in sport research, J. Biomech., 79, pp. 1-14, (2018); Winter D.A., Biomechanics and Motor Control of Human Movement, pp. 1-325, (2009); Zajac F.E., Neptune R.R., Kautz S.A., Biomechanics and muscle coordination of human walking. Part I: introduction to concepts, power transfer, dynamics and simulations, Gait Post., 16, 3, pp. 215-232, (2002)","T.R. Souza; Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; email: thalesrs@ufmg.br","","Elsevier Ltd","00219290","","JBMCB","33873107","English","J. Biomech.","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85104360036" "Zabala M.; García Artero E.; Lozano L.; Lozano J.; Soto V.M.","Zabala, Mikel (56653682500); García Artero, Enrique (22978435300); Lozano, Luis (57198272648); Lozano, Javier (57198337637); Soto, Victor M. (7004654583)","56653682500; 22978435300; 57198272648; 57198337637; 7004654583","Analysis of instep and toe kicks in indoor soccer elite players; [Análisis de los golpeos de empeine y puntera en jugadores de elite de fútbol-sala]","2006","Archivos de Medicina del Deporte","23","114","","274","282","8","4","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-33748661998&partnerID=40&md5=8eca4ccd59f52b8efb187126d075e742","Facultad de Ciencias de la Actividad Física y el Deporte, Universidad de Granada, Granada, Spain; Real Federación Española de Fútbol; Facultad de Ciencias de la Actividad Física y del Deporte, Universidad de Granada, 18011, Granada, Carretera de Alfacar, s/n, Spain","Zabala M., Facultad de Ciencias de la Actividad Física y el Deporte, Universidad de Granada, Granada, Spain, Facultad de Ciencias de la Actividad Física y del Deporte, Universidad de Granada, 18011, Granada, Carretera de Alfacar, s/n, Spain; García Artero E., Facultad de Ciencias de la Actividad Física y el Deporte, Universidad de Granada, Granada, Spain; Lozano L., Facultad de Ciencias de la Actividad Física y el Deporte, Universidad de Granada, Granada, Spain; Lozano J., Real Federación Española de Fútbol; Soto V.M., Facultad de Ciencias de la Actividad Física y el Deporte, Universidad de Granada, Granada, Spain","Double penalty kick is a determinant skill in Indoor Soccer which can determine the final result of a march and that is usually may be performed with instep or punt toe according to the purpose of the player (looking for the predominance of accuracy or velocity of the ball, respectively). A three dimensional analysis of the movement, in pre-competitive elite situation -what secure the superior quality of the motions executions-, filmed through high velocity camera and analyzed with Cyborg 3.0 software, let us affirm that instep kick is characterized by a longer last step and slower ball start velocity of the ball than the toe kick, but provide a greater accuracy of the kick. To obtain high velocities of the ball in the instep kick, the backward movement of the kicking leg is greater, and the centre of gravity is located higher. In the other side, toe kick produces greater ball start velocity of the ball, probably due to a better transmission of force from the latest limb -foot- to the ball (coefficient of restitution or ""stiffness""). Undoubtedly, the final limb of kinetic chain, the foot, determines the discriminatory characteristics between one and other kick. Knowing deeply similar and different elements of these two styles of kicking will let us design a more effective training methodology to our athletes according to the pretended objective.","Biomechanics; Double penalty; Indoor soccer; Instep; Kick; Toe","accuracy; adult; article; athlete; biomechanics; camera; computer program; controlled study; football; gravity; human; human experiment; kinetics; leg movement; male; muscle force; normal human; toe; training; velocity","Zabala M., Lozano L., Análisis del lanzamiento de Doble Penalty en Futbol-Sala. Extrapolación al deporte base, Innovaciones y Nuevas Perspectivas en la Didáctica-entrenamiento de los Deportes Colectivos y la Formación del Jugador Base, pp. 189-205, (1999); Rodano R., Tavana R., Three dimensional analysis of instep kick in professional soccer players, Science and Football II, pp. 357-361, (1993); Zabala M., Lozano L., Perspectiva biomecánica del golpeo en fútbol: Una revisión a modo de recorrido histórico, Lecturas: Revista Digital Efdeportes, 45, (2002); Phillips S.J., Invariance of elite kicking performance, Biomechanics IX-B, Human Kinetics, pp. 539-542, (1985); Opavsky P., An investigation of linear and angular kinematics of the leg during two types of soccer kick, Science and Football, pp. 456-459, (1988); Isokawa M., Lees A., A biomechanical analysis of the instep kick motion in soccer, Science and Football, pp. 449-455, (1988); Basumatary S., Begg R.K., Diamond N.T., Biomechanical analysis of the instep-kick in soccer, Journal of Sports Sciences, 17, (1999); Olson K.R., Leg Length and Distance of Approach Steps for the Optimal Soccer Style Placekick, (1992); Roberts E.M., Zernicke R.F., Youm Y., Huang T.C., Kinetic parameters of kicking, Biomechanics IV, pp. 157-162, (1974); Putnam C.A., Interaction between segments during a kicking motion, Biomechanics XIII-B, Human Kinetics, pp. 688-694, (1983); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Aagaard H., Dyhre-Poulsen P., Klausen K., EMG activity of the illiopsoas muscle and leg kinetics during the soccer place kick, Scandinavian Journal of Medicine and Science in Sports, 9, 4, pp. 195-200, (1999); Asami T., Analysis of powerful ball kicking, Biomechanics XIII-B, Human Kinetics, pp. 695-700, (1983); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 441-448, (1988); Andersen T.B., Dorge H.C., Thomsen F.I., Collisions in soccer kicking, Sports Engineering, 2, 2, pp. 121-125, (1999); Lees A., Nolan L., Three-dimensional kinematic analysis of the instep kick under speed and accuracy conditions, Journal of Sports Sciences, 17, (1999); Patritti B.L., Lees A., Nevill A.M., Kinematic model of kicking performance for the preferred and non-preferred leg in male soccer players, Journal of Sports Sciences, 17, (1999); Sato H., Asai T., Miyashita S., Mouri M., Oomori Y., Ooshima Y., Comparison of curve kick with instep kick by 3-D motion analysis, Journal of Sports Sciences, 17, (1999); Garcia-Artero E., Zabala M., La importancia del rango de movimiento de cadera y rodilla en el golpeo de empeine total en fútbol. Aplicaciones para el alto rendimiento y para la enseñanza del gesto en fútbol base, Lecturas: Revista Digital Efdeportes, 75, (2004); Gutierrez-Davila M., Raya A., Efecto de la superficie de contacto sobre los factores biomecánicos en el golpeo de fútbol, Archivas de Medicina del Deporte, 20, 95, pp. 229-236, (2003); Gutierrez M., Soto V.M., Análisis biomecánico de la cadena cinética implicada en el golpeo en el fútbol con el empeine del pie, Archivas de Medicina del Deporte, 19, 34, pp. 165-171, (1992); Hagiwara T., Amano K., An electromyographic study on outside kicking, Bulleting of Institute of Health and Sport Sciences, University of Tsukuba, 16, pp. 51-61, (1993); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med Sci Sport Exerc, 30, 6, pp. 917-927, (1998); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med Sci Span Exerc, 34, 12, pp. 2028-2036, (2002); Davids K., Lees A., Burwitz L., Understanding and measuring coordination and control in kicking skills in soccer: Implications for talent identification and skill acquisition, Journal of Sport Sciences, 18, 9, pp. 703-714, (2000); Dos Anjos L.A., Adrian M.J., Forcas de reacao do solo na perna de sustentacao de jogadores habilidosos e nao habilidosos durante chutes numa bola de futebol, Revista Brasileira de Ciendas do Esporte (Sao Paulo), 8, 1, pp. 129-133, (1986); Mognoni P., Narici M.V., Sirtori M.D., Lorenzelli F., Isokinetic torques and kicking maximal ball velocity in young soccer players, Journal of Sports Medicine and Physical Fitness, 34, pp. 357-361, (1994)","M. Zabala; Facultad de Ciencias de la Actividad Física y del Deporte, Universidad de Granada, 18011, Granada, Carretera de Alfacar, s/n, Spain; email: mikelz@ugr.es","","","02128799","","AMDEF","","Spanish","Arch. Med. Deporte","Article","Final","","Scopus","2-s2.0-33748661998" "Bisesti B.A.; Lawrence M.A.; Koch A.J.; Carlson L.A.","Bisesti, Brianna A. (56943416900); Lawrence, Michael A. (55754822100); Koch, Alexander J. (36061026100); Carlson, Lara A. (24830524900)","56943416900; 55754822100; 36061026100; 24830524900","Comparison of knee moments and landing patterns during a lateral cutting maneuver: Shod Vs. Barefoot","2015","Journal of Strength and Conditioning Research","29","11","","3075","3078","3","4","10.1519/JSC.0000000000001134","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946224830&doi=10.1519%2fJSC.0000000000001134&partnerID=40&md5=e758c6390c6e6c995a84f15b62a483f3","Westbrook College of Health Professions, University of New England, Biddeford, ME, United States; Department of Physical Therapy, University of New England, Portland, ME, United States; Lenoir-Rhyne University, Hickory, NC, United States; Center for Excellence in the Neurosciences, University of New England, Biddeford, ME, United States","Bisesti B.A., Westbrook College of Health Professions, University of New England, Biddeford, ME, United States; Lawrence M.A., Department of Physical Therapy, University of New England, Portland, ME, United States; Koch A.J., Lenoir-Rhyne University, Hickory, NC, United States; Carlson L.A., Westbrook College of Health Professions, University of New England, Biddeford, ME, United States, Center for Excellence in the Neurosciences, University of New England, Biddeford, ME, United States","Noncontact anterior cruciate ligament (ACL) injuries often occur during lateral cutting maneuvers, in which extension, adduction, and external rotation create high loads on the ACL. The aim of this study was to examine knee moments and foot strike patterns during lateral cutting when shod (SD) and barefoot (BF). Fifteen NCAA Division III athletes (7 female and 8 male; age 20.2 ± 1.5 years; mass 71.5 ± 11.3 kg; height, 1.7 ± 0.06 m) without lower limb pathologies were analyzed during 5 trials of 45° lateral cutting maneuvers for each limb in both BF and SD conditions with the approach speed of 4.3 m·s -1. Kinetic and kinematic data were collected using an 8-camera motion capture system and a force plate with collection rates at 240 Hz and 2400 Hz, respectively. Paired t-tests were used to determine differences conditions. The SD condition produced a significantly (p ≤ 0.05) greater peak adduction moment and cutting, whereas BF caused more anterior foot strike. Lateral cutting when BF places no more stress on the ACL than when SD. Our findings suggest that lateral cutting maneuvers when BF will not increase stress on the ACL. © 2015 National Strength and Conditioning Association.","ACL; barefoot; lateral cutting; shod","Anterior Cruciate Ligament; Biomechanical Phenomena; Female; Humans; Knee Joint; Male; Movement; Shoes; Soccer; Young Adult; anterior cruciate ligament; biomechanics; comparative study; female; human; injuries; knee; male; movement (physiology); physiology; shoe; soccer; young adult","Bell A., Pederson D., Brand R., Prediction of hip joint center location from external landmarks, Hum Mov Sci, 8, pp. 3-16, (1989); Bencke J., Zebis M.K., The influence of gender on neuromuscular pre-Activity during side-cutting, J Electromyogr Kinesiol, 21, pp. 371-375, (2011); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running, and cutting maneuvers, Med Sci Sports Exerc, 35, pp. 119-127, (2003); Bishop M., Fiolkowski P., Conrad B., Brunt D., Horodyski M., Athletic footwear, leg stiffness, and running kinematics, J Athl Train, 41, pp. 387-392, (2006); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, pp. 573-578, (2000); Boshoff G.B.E., Barefoot"" administrators: Laying the foundation for sports development in South Africa, J Sports Management, 11, (1997); Chappell J.D., Yu B., Kirkendall D.T., Garrett W.E., A comparison of knee kinetics between male, and female recreational athletes in stop-jump tasks, Am J Sports Med, 30, pp. 261-267, (2002); Cochrum R.G., Connors R.T., Coons J.M., Fuller D.K., Morgan D.W., Caputo J.L., Comparison of running economy values while wearing no shoes, minimal shoes, or normal running shoes, J Strength Cond Res, (2015); Davis R., Ounpuu S., Tyburski D., Gage J., A gait analysis data collection, and recution technique, Hum Mov Sci, 10, pp. 575-587, (1991); Divert C., Mornieux G., Baur H., Mayer F., Belli A., Mechanical comparison of barefoot, and shod running, Int J Sports Med, 26, pp. 593-598, (2005); Griffin L.Y., Agel J., Albohm M.J., Arendt E.A., Dick R.W., Garrett W.E., Garrick J.G., Hewett T.E., Huston L., Ireland M.L., Johnson R.J., Kibler W.B., Lephart S., Lewis J.L., Lindenfeld T.N., Mandelbaum B.R., Marchak P., Teitz C.C., Wojtys E.M., Noncontact anterior cruciate ligament injuries: Risk factors, and prevention strategies, J Am Acad Orthop Surg, 8, pp. 141-150, (2000); Hughes G., A review of recent perspectives on biomechanical risk factors associated with anterior cruciate ligament injury, Res Sports Med, 22, pp. 193-212, (2014); Li G., Rudy T.W., Sakane M., Kanamori A., Ma C.B., Woo S.L., The importance of quadriceps, and hamstring muscle loading on knee kinematics, and in-situ forces in the ACL, J Biomech, 32, pp. 395-400, (1999); Lieberman D.E., Venkadesan M., Werbel W.A., Daoud A.I., D'Andrea S., Davis I.S., Mangeni R.O., Pitsiladis Y., Foot strike patterns, and collision forces in habitually barefoot versus shod runners, Nature, 463, pp. 531-535, (2010); Mihata L.C., Beutler A.I., Boden B.P., Comparing the incidence of anterior cruciate ligament injury in collegiate lacrosse, soccer, and basketball players: Implications for anterior cruciate ligament mechanism, and prevention, Am J Sports Med, 34, pp. 899-904, (2006); O'Connor K.M., Monteiro S.K., Hoelker I.A., Comparison of selected lateral cutting activities used to assess ACL injury risk, J Appl Biomech, 25, pp. 9-21, (2009); Olin E.D., Gutierrez G.M., EMG, and tibial shock upon the first attempt at barefoot running, Hum Mov Sci, 32, pp. 343-352, (2013); Paquette M.Z.S., Baumgartner L., Acute effects of barefoot, minimal shoes, and running shoes on lower limb mechanics in rear, and forefoot strike runners, Footwear Sci, 5, pp. 9-18, (2012); Salci Y., Kentel B.B., Heycan C., Akin S., Korkusuz F., Comparison of landing maneuvers between male, and female college volleyball players, Clin Biomech (Bristol Avon, 19, pp. 622-628, (2004); Sinclair J., Effects of barefoot, and barefoot inspired footwear on knee, and ankle loading during running, Clin Biomech (Bristol Avon, 29, pp. 395-399, (2014); Yu B., Lin C.F., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clin Biomech (Bristol Avon, 21, pp. 297-305, (2006)","L.A. Carlson; Westbrook College of Health Professions, University of New England, Biddeford, United States; email: lcarlson@une.edu","","NSCA National Strength and Conditioning Association","10648011","","","26506061","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-84946224830" "Scaramussa K.; de Castro J.V.; Ellera Gomes J.L.","Scaramussa, Kelly (55795819500); de Castro, Jacqueline Vieira (24605146300); Ellera Gomes, João Luiz (7203011004)","55795819500; 24605146300; 7203011004","Does decrease in hip range of motion interfere in frontal plane leg alignment in teenage soccer players?","2018","European Journal of Orthopaedic Surgery and Traumatology","28","3","","477","483","6","2","10.1007/s00590-017-2066-x","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85032508840&doi=10.1007%2fs00590-017-2066-x&partnerID=40&md5=3cd277518ee9f009fe450abead8eff50","Universidade Federal do Rio Grande do Sul/UFRGS, Av. Ramiro Barcelos, 2400, 2 andar, Porto Alegre, 90035-003, CEP, Brazil","Scaramussa K., Universidade Federal do Rio Grande do Sul/UFRGS, Av. Ramiro Barcelos, 2400, 2 andar, Porto Alegre, 90035-003, CEP, Brazil; de Castro J.V., Universidade Federal do Rio Grande do Sul/UFRGS, Av. Ramiro Barcelos, 2400, 2 andar, Porto Alegre, 90035-003, CEP, Brazil; Ellera Gomes J.L., Universidade Federal do Rio Grande do Sul/UFRGS, Av. Ramiro Barcelos, 2400, 2 andar, Porto Alegre, 90035-003, CEP, Brazil","Introduction: This study determines cross-sectional changes in transverse plane hip range of motion (ROM) in teenager soccer athletes and non-athletes and correlates these measures with changes in frontal plane leg alignment (varus–valgus alignment). Evidence acquisition: This was a comparative cross-sectional study with non-random convenience sampling. Evidence synthesis: Participants were recruited from a major professional soccer club and two local state-run schools in southern Brazil. A total of 396 male participants aged 9–18 years were assessed, 183 soccer players (athlete group; mean age, 13.3 ± 2.7 years) and 213 students (non-athlete group; mean age 14.4 ± 2.5 years). Hip internal rotation (IR) and external rotation (ER) and frontal plane leg alignment were measured in all participants. Changes in transverse plane hip ROM and frontal plane leg alignment were determined. Mean IR was 20.7° ± 5.8° in athletes versus 32.8° ± 2.9° in non-athletes, and mean ER was 36.5° ± 7.4° in athletes versus 46.7° ± 4.8° in non-athletes. Overall, IR was decreased in the athlete group compared to the non-athlete group (P < 0.001). Mean IR and ER were significantly lower in older athletes (P < 0.001), while only ER was significantly lower in older non-athletes (P < 0.001). Varus leg alignment was prevalent at all ages in the athlete group (71.0%, P = 0.153). In the non-athlete group, the occurrence of varus leg alignment was higher in older participants (P = 0.001). Lower mean IR was correlated with more severe varus leg alignment in the athlete group (rs = 0.19; P = 0.009). Conclusions: We found a lower hip ROM, particularly in IR, in teenager soccer players according to the enhancement age group from the sample. But varus alignment of the leg was also prevalent in this group and comes before hip abnormalities started to be detected. © 2017, Springer-Verlag France SAS.","Anterior cruciate ligament; Hip; Knee; Range of motion","Adolescent; Analysis of Variance; Bone Malalignment; Brazil; Child; Cross-Sectional Studies; Hip Joint; Humans; Leg; Male; Range of Motion, Articular; Soccer; adolescent; adult; age distribution; Article; biomechanics; Brazil; child; comparative study; controlled study; convenience sample; correlational study; cross-sectional study; disease severity; frontal plane leg alignment; hip external rotation; hip internal rotation; human; joint mobility; leg length; male; musculoskeletal system parameters; prevalence; priority journal; range of motion; school child; soccer player; transverse plane hip range of motion; valgus leg alignment; varus leg alignment; young adult; adolescent; analysis of variance; bone malformation; clinical trial; ethnology; hip; joint characteristics and functions; leg; multicenter study; pathophysiology; physiology; soccer","Engebretsen A.H., Myklebust G., Holme I., Engebretsen L., Bahr R., Prevention of injuries among male soccer players: a prospective, randomized intervention study targeting players with previous injuries or reduced function, Am J Sports Med, 36, pp. 1052-1060, (2008); Junge A., Dvorak J., Chomiak J., Peterson L., Graf-Baumann T., Medical history and physical findings in football players of different ages and skill levels, Am J Sports Med, 28, pp. S16-S21, (2000); Gomes J.L., de Castro J.V., Becker R., Decreased hip range of motion and noncontact injuries of the anterior cruciate ligament, Arthroscopy, 24, pp. 1034-1037, (2008); Ellera Gomes J.L., Palma H.M., Becker R., Radiographic findings in restrained hip joints associated with ACL rupture, Knee Surg Sports Traumatol Arthrosc, 18, pp. 1562-1567, (2010); Tainaka K., Takizawa T., Kobayashi H., Umimura M., Limited hip rotation and non-contact anterior cruciate ligament injury: a case-control study, Knee, 21, pp. 86-90, (2014); de Castro J.V., Machado K.C., Scaramussa K., Gomes J.L., Incidence of decreased hip range of motion in youth soccer players and response to a stretching program: a randomized clinical trial, J Sport Rehabil, 22, pp. 100-107, (2013); Gomes J.L.E., Palma H., Ruthner R., Influence of hip restriction on noncontact ACL rerupture, Knee Surg Sports Traumatol Arthrosc, 22, pp. 188-191, (2014); Philippon M., Dewing C., Briggs K., Steadman J.R., Decreased femoral head-neck offset: a possible risk factor for ACL injury, Knee Surg Sports Traumatol Arthrosc, 20, pp. 2585-2589, (2012); Reiman M.P., Bolgla L.A., Lorenz D., Hip functions influence on knee dysfunction: a proximal link to a distal problem, J Sport Rehabil, 18, pp. 33-46, (2009); Yaniv M., Becker T., Goldwirt M., Khamis S., Steinberg D.M., Weintroub S., Prevalence of bowlegs among child and adolescent soccer players, Clin J Sport Med, 16, pp. 392-396, (2006); Witvrouw E., Danneels L., Thijs Y., Cambier D., Bellemans J., Does soccer participation lead to genu varum?, Knee Surg Sports Traumatol Arthrosc, 17, pp. 422-427, (2009); Griffin L.Y., Albohm M.J., Arendt E.A., Bahr R., Beynnon B.D., Demaio M., Dick R.W., Engebretsen L., Garrett W.E., Hannafin J.A., Hewett T.E., Huston L.J., Ireland M.L., Johnson R.J., Lephart S., Mandelbaum B.R., Mann B.J., Marks P.H., Marshall S.W., Myklebust G., Noyes F.R., Powers C., Shields C., Shultz S.J., Silvers H., Slauterbeck J., Taylor D.C., Teitz C.C., Wojtys E.M., Yu B., Understanding and preventing noncontact anterior cruciate ligament injuries: a review of the Hunt Valley II meeting, January 2005, Am J Sports Med, 34, pp. 1512-1532, (2006); Zhang L.Q., Xu D., Wang G., Hendrix R.W., Muscle strength in knee varus and valgus, Med Sci Sports Exerc, 33, pp. 1194-1199, (2001); Brenner J.S., Overuse injuries, overtraining, and burnout in child and adolescent athletes, Pediatrics, 119, pp. 1242-1245, (2007); Reilly T., Bangsbo J., Franks A., Anthropometric and physiological predispositions for elite soccer, J Sports Sci, 18, pp. 669-683, (2000); World Health Organization; Verrall G.M., Slavotinek J.P., Barnes P.G., Esterman A., Oakeshott R.D., Spriggins A.J., Hip joint range of motion restriction precedes athletic chronic groin injury, J Sci Med Sport, 10, pp. 463-466, (2007); Morley A.J., Knock-knee in children, Br Med J, 2, pp. 976-979, (1957); Navali A.M., Bahari L.A., Nazari B., A comparative assessment of alternatives to the full-leg radiograph for determining knee joint alignment, Sports Med Arthrosc Rehabil Ther Technol, 4, (2012); Sabharwal S., Kumar A., Methods for assessing leg length discrepancy, Clin Orthop Relat Res, 466, pp. 2910-2922, (2008); Sankar W.N., Laird C.T., Baldwin K.D., Hip range of motion in children: What is the norm?, J Pediatr Orthop, 32, pp. 399-405, (2012); Travers P.R., Evans P.G., Annotation limitation of mobility in major joints of 231 sportsmen, Br J Sports Med, 10, pp. 35-36, (1976); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J Sports Sci Med, 6, pp. 154-165, (2007); Verrall G.M., Hamilton I.A., Slavotinek J.P., Oakeshott R.D., Spriggins A.J., Barnes P.G., Fon G.T., Hip joint range of motion reduction in sports-related chronic groin injury diagnosed as pubic bone stress injury, J Sci Med Sport, 8, pp. 77-84, (2005); Arokoski M.H., Haara M., Helminen H.J., Arokoski J.P., Physical function in men with and without hip osteoarthritis, Arch Phys Med Rehabil, 85, pp. 574-581, (2004); Manning C., Hudson Z., Comparison of hip joint range of motion in professional youth and senior team footballers with age-matched controls: An indication of early degenerative change?, Phys Ther Sport, 10, pp. 25-29, (2009); Powers C.M., The influence of abnormal hip mechanics on knee injury: a biomechanical perspective, J Orthop Sports Phys Ther, 40, pp. 42-51, (2010); Heath C.H., Staheli L.T., Normal limits of knee angle in white children–genu varum and genu valgum, J Pediatr Orthop, 13, pp. 259-262, (1993); MacMahon E.B., Carmines D.V., Irani R.N., Physiologic bowing in children: an analysis of the pendulum mechanism, J Pediatr Orthop B, 4, pp. 100-105, (1995)","K. Scaramussa; Universidade Federal do Rio Grande do Sul/UFRGS, Porto Alegre, Av. Ramiro Barcelos, 2400, 2 andar, 90035-003, Brazil; email: kellyscaramussa@yahoo.com.br","","Springer-Verlag France","16338065","","EJOTF","29080049","English","Eur. J. Orthop. Surg. Traumatol.","Article","Final","","Scopus","2-s2.0-85032508840" "Peikenkamp Klaus","Peikenkamp, Klaus (6507720221)","6507720221","Modelling of processes of impact in sports","1989","Journal of Biomechanics","22","10","","1069","","","3","10.1016/0021-9290(89)90418-1","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0024939951&doi=10.1016%2f0021-9290%2889%2990418-1&partnerID=40&md5=8159a2c3f60ada60cdbc1a12dc1ce80e","Univ of Muenster, Germany","Peikenkamp Klaus, Univ of Muenster, Germany","The elementary equations of impact are expanded so that the qualitative influence of the attributes of elasticity and friction are considered in the equations too. A computer program was developed which represents a module within the general model of sports movements. The program determines if merely sliding friction, merely adhesive friction, or the combination of both with sliding coming first occurs within a given problem of impact. The program calculates velocity, angle of reflection and angular velocity after impact. Among others the following results are gained. (a) As long as only sliding friction occurs the output parameters listed above are linearly dependent on the coefficient of friction; (b) as soon as adhesive friction occurs the outputs are independent on the coefficient of friction. (c) During the transmition period between sliding friction and adhesive friction the velocity and the angle of reflection decrease considerabely while the angular velocity increases greatly. (d) The occurrence of adhesive friction is almost parabolically dependent on the angle of incidence. (e) In soccer the angular velocity and the velocity of the ball are linearly dependent on the velocity of the kicking leg but the angle of reflection is constant. (f) Furthermore, the velocity of the ball is parabolically dependent on the eccentric distance; the angular velocity and the angle of reflection are almost linearly dependent on the excentric distance until a critical rate is reached. If this limit is exceeded both outputs decrease largely.","","Biological materials; Biomedical Engineering - Mathematical Models; Friction; Adhesive Friction; Impact Equations; Sliding Friction; Biomechanics","","","","","00219290","","JBMCB","","English","J Biomech","Article","Final","","Scopus","2-s2.0-0024939951" "Augustus S.; Hudson P.E.; Smith N.","Augustus, Simon (57185741400); Hudson, Penny E. (57224834909); Smith, Neal (26427089000)","57185741400; 57224834909; 26427089000","The effect of approach velocity on pelvis and kick leg angular momentum conversion strategies during football instep kicking","2021","Journal of Sports Sciences","39","20","","2279","2288","9","4","10.1080/02640414.2021.1929008","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85106525467&doi=10.1080%2f02640414.2021.1929008&partnerID=40&md5=e2fa1f7c32c363b2009b725a21e1a70d","Chichester Institute of Sport, University of Chichester, Chichester, United Kingdom","Augustus S., Chichester Institute of Sport, University of Chichester, Chichester, United Kingdom; Hudson P.E., Chichester Institute of Sport, University of Chichester, Chichester, United Kingdom; Smith N., Chichester Institute of Sport, University of Chichester, Chichester, United Kingdom","During football instep kicking, whole-body deceleration during the final stride has been associated with greater kick leg angular momentum and enhanced foot and ball velocities, but the influence of approach velocity on these mechanisms is unknown. This study assessed how approach velocity affects momentum conversion strategies of experienced players performing fast and accurate kicks. Eleven semi-professional footballers performed instep kicks from self-selected (3.34 ± 0.43 m/s), fast (3.71 ± 0.33 m/s) and slow (2.77 ± 0.32 m/s) approaches. Kicking motions and ground reaction forces under the support leg were captured using 3D motion analysis (1000 Hz). The players responded to perturbations in approach velocity by using the support leg to regulate whole-body deceleration and create ideal conditions for co-ordinated pelvic and kick leg momentums during the downswing. Further, the pelvis was key for generating transverse momentum at the kick leg, but the participants displayed distinctly different pelvis transverse rotation strategies. Identification of these inter-individual strategies may provide a basis for technical and strength training practices to be tailored for individual players. Future research might investigate if training practices that expose footballers to varying approach velocities of between 2.5 and 4.0 m/s promotes development of movement strategies that are robust to perturbations in approach conditions. © 2021 Informa UK Limited, trading as Taylor & Francis Group.","biomechanics; centre of mass; pelvis; Soccer; support leg","Adult; Biomechanical Phenomena; Deceleration; Humans; Leg; Male; Motor Skills; Pelvis; Soccer; Time and Motion Studies; Young Adult; adult; article; biomechanics; deceleration; football player; ground reaction force; human; leg; pelvis; resistance training; rotation; soccer; biomechanics; leg; male; motor performance; pelvis; physiology; soccer; task performance; young adult","Abt G., Boreham C., Davison G., Jackson R., Nevill A., Wallace E., Williams M., Power, precision, and sample size estimation in sport and exercise science research, Journal of Sports Sciences, 38, 17, pp. 1933-1935, (2020); Andersen T.B., Dorge H.C., The influence of speed of approach and accuracy constraint on the maximal speed of the ball in soccer kicking, Scandinavian Journal of Medicine & Science in Sports, 21, 1, pp. 79-84, (2011); Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football. Journal of Sports Sciences, 24, 951–960, 10, (2006); Augustus S., Amca A.M., Hudson P.E., Smith N., Improved accuracy of biomechanical motion data obtained during impacts using a time-frequency low-pass filter, Journal of Biomechanics, 101, (2020); Augustus S., Amca A.M., Hudson P.E., Smith N., Choice of low-pass filter influences practical interpretation of ball kicking motions: The effect of a time-frequency filter method, Sports Biomechanics, pp. 1-18, (2020); Augustus S., Mundy P., Smith N., Support leg action can contribute to maximal instep soccer kick performance: An intervention study, Journal of Sports Sciences, 35, 1, pp. 89-98, (2017); Bahamonde R.E., Changes in angular momentum during the tennis serve, Journal of Sports Sciences, 18, 8, pp. 579-592, (2000); Ball K., Biomechanical considerations of distance kicking in Australian Rules football, Sports Biomechanics, 7, 1, pp. 10-23, (2008); Ball K., Centre of mass motion during the punt kick, Portuguese Journal of Sport Sciences, 11, pp. 45-48, (2011); Ball K., Loading and performance of the support leg in kicking, Journal of Science and Medicine in Sport, 16, 5, pp. 455-459, (2013); Bates B.T., James C.R., Dufek J.S., Single-subject analysis, Innovative analyses of human movement: Analytical tools for human movement research, pp. 3-28, (2004); Bezodis N., Trewartha G., Wilson C., Irwin G., Contributions of the non-kicking-side arm to rugby place-kicking technique, Sports Biomechanics, 6, 2, pp. 171-186, (2007); Cappozzo A., Catani F., Della Croce U., Leardini A., Position and orientation in space of bones during movement: Anatomical frame definition and determination, Clinical Biomechanics (Bristol, Avon), 10, 4, pp. 171-178, (1995); Cohen J., Statistical power analysis for the behavioral sciences, (1988); Dapena J., method to determine the angular momentum of a human body about three orthogonal axes passing through its center of gravity, Journal of Biomechanics, 11, pp. 251-256, (1978); De Leva P., Adjustments to Zatsiorky-Seluyanov’s Segment Inertia Parameters, Journal of Biomechanics, 29, 9, pp. 1223-1230, (1996); Dorge H.C., Anderson T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, 4, pp. 293-299, (2002); Egan C.D., Verheul M.H., Savelsbergh G.J., Effects of experience on the coordination of internally and externally timed soccer kicks, Journal of Motor Behaviour, 39, 5, pp. 423-432, (2007); Fleiss J.L., The design and analysis of clinical experiments, (1986); Glazier P.S., Mehdizadeh S., Challenging Conventional paradigms in applied sports biomechanics research, Sports Medicine, 49, 2, pp. 176-181, (2018); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, Journal of Biomechanical Engineering, 105, 2, pp. 136-144, (1983); Hanavan E.P., A mathematical model of the human body, 18, (1964); Inoue K., Nunome H., Sterzing T., Shinkai H., Ikegami Y., Dynamics of the support leg in soccer instep kicking, Journal of Sports Sciences, 32, 11, pp. 1023-1032, (2014); Katis A., Kellis E., Is soccer kick performance better after a “faking” (cutting) maneuver task?, Sports Biomechanics, 10, 1, pp. 35-45, (2011); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Science & Medicine, 6, 2, pp. 154-165, (2007); Langhout R., Weber M., Tak I., Lenssen T., Timing characteristics of body segments during the maximal instep kick in experienced players, The Journal of Sports Medicine and Physical Fitness, 7, 1, pp. 849-856, (2015); Lees A., Barton G., Robinson M., The influence of Cardan rotation sequence on angular orientation data for the lower limb in the soccer kick, Journal of Sports Sciences, 28, 4, pp. 445-450, (2010); Lees A., Steward I., Rahnama N., Barton G., Lower limb function in the maximal instep kick in soccer, Contemporary Sport, Leisure and Ergonomics, 1, pp. 149-160, (2009); Lees A.N., Nolan L., Three-dimensional kinematic analysis of the instep kick under speed and accuracy conditions, Science and football, (2002); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, 6, pp. 917-927, (1998); McGinley J.L., Baker R., Wolfe R., Morris M.E., The reliability of three-dimensional kinematic gait measurements: A systematic review, Gait & Posture, 29, 3, pp. 360-369, (2009); Naito K., Fukui Y., Maruyama T., Energy redistribution analysis of dynamic mechanisms of muti-body, multi-joint kinetic chain movement during soccer instep kicks, Human Movement Science, 31, 1, pp. 161-181, (2012); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, 12, pp. 2028-2036, (2002); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 24, 5, pp. 529-541, (2006); Orloff H., Sumida B., Chow J.Y., Habibi L., Fujino A., Kramer B., Ground reaction forces and kinematics of plant leg position during instep kicking in male and female collegiate soccer players, Sports Biomechanics, 7, 2, pp. 237-247, (2008); Pataky T., Vanrenterghem J., Robinson M., Zero- vs. one-dimensional, parametric vs. non-parametric, and confidence interval vs. hypothesis testing procedures in one-dimensional biomechanical trajectory analysis, Journal of Biomechanics, 48, 7, pp. 1277-1285, (2015); Pataky T.C., One-dimensional statistical parametric mapping in Python, Computer Methods in Biomechanical and Biomedical Engineering, 15, 3, pp. 295-301, (2012); Pearsall D.J., Reid J.G., Livingston A.L., Segmental inertial parameters of the human trunk as determined from computed tomography, Annals of Biomedical Engineering, 24, 2, pp. 198-210, (1996); Potthast W., Heinrich K., Schneider J., Brueggemann G.P., The success of a soccer kick depends on run up deceleration, Paper Presented at International Symposium of Biomechanics in Sport, (2010); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomechanics, 4, 1, pp. 59-72, (2005); Toothaker L.E., Multiple comparison procedures, (1993); Turner B.J., Sayers M.G.L., pp. 207-220, (2010)","S. Augustus; Chichester Institute of Sport, University of Chichester, Chichester, College Lane, PO19 6PE, United Kingdom; email: s.augustus@chi.ac.uk","","Routledge","02640414","","JSSCE","34034623","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85106525467" "Zago M.; Codari M.; Grilli M.; Bellistri G.; Lovecchio N.; Sforza C.","Zago, Matteo (57220045130); Codari, Marina (55882760200); Grilli, Massimo (57188987533); Bellistri, Giuseppe (55501863500); Lovecchio, Nicola (56547541800); Sforza, Chiarella (7005225305)","57220045130; 55882760200; 57188987533; 55501863500; 56547541800; 7005225305","Determinants of the half-turn with the ball in sub-elite youth soccer players","2016","Sports Biomechanics","15","2","","234","244","10","3","10.1080/14763141.2016.1162841","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84964461203&doi=10.1080%2f14763141.2016.1162841&partnerID=40&md5=0c99d33f6a679ac8e92ff66213559edf","Department of Biomedical Sciences for Health, University of Milan, Milan, Italy","Zago M., Department of Biomedical Sciences for Health, University of Milan, Milan, Italy; Codari M., Department of Biomedical Sciences for Health, University of Milan, Milan, Italy; Grilli M., Department of Biomedical Sciences for Health, University of Milan, Milan, Italy; Bellistri G., Department of Biomedical Sciences for Health, University of Milan, Milan, Italy; Lovecchio N., Department of Biomedical Sciences for Health, University of Milan, Milan, Italy; Sforza C., Department of Biomedical Sciences for Health, University of Milan, Milan, Italy","Abstract: We explored the biomechanics of the 180° change-of-direction with the ball (half-turn) in soccer. We aimed at identifying movement strategies which enhance the players’ half-turning performance, by characterising technique kinematics and understanding the structure of biomechanical and anthropometrics variables. Ten Under-13 sub-elite male players were recorded with an optoelectronic motion analyser while performing a 5-m straight dribbling followed by a half-turn with the sole. Joints kinematics differences between faster and slower trials were found in support-side hip rotation, driving-side hip adduction, trunk flexion and rotation, and arms abduction. To unveil the data-set structure, a principal component (PC) analysis and a stepwise linear discriminant analysis were performed using 30 biomechanical parameters and four anthropometric variables for each trial. Seven retained PCs explained 79% of the overall variability, featuring combinations of original variables that help in understanding the factors facilitating fast half-turns: keeping short steps, minimising lateral and forward body movements, and centre-of-mass lowering, even with ample lower limbs ranges of motion (RoM); abducting the upper limbs while limiting trunk flexion and pelvic inclination RoM. Balance and task-constrained exercises may be proposed to improve this technique. Moreover, a quantitative knowledge of the movement structure could give coaches objective insights to better instruct young players. © 2016 Informa UK Limited, trading as Taylor & Francis Group.","coordination; kinematics; methods; Motion analysis; movement; soccer; sport topics; sports; techniques","Anthropometry; Biomechanical Phenomena; Child; Humans; Linear Models; Male; Motor Skills; Principal Component Analysis; Soccer; Time and Motion Studies; anthropometry; biomechanics; child; human; male; motor performance; physiology; principal component analysis; soccer; statistical model; task performance","Bangsbo J., Iaia F.M., Principles of fitness training, Science and Soccer, pp. 24-42, (2013); Chaouachi A., Manzi V., Chaalali A., Wong D.P., Chamari K., Castagna C., Determinants analysis of change-of-direction ability in elite soccer players, Journal of Strength and Conditioning Research, 26, pp. 38-40, (2012); Deluzio K.J., Astephen J.L., Biomechanical features of gait waveform data associated with knee osteoarthritis. An application of principal component analysis, Gait and Posture, 25, pp. 86-93, (2007); Dunteman G.H., Principal component analysis, pp. 15-44, (1989); Elias L., Bryden M., Bulman-Fleming M., Footedness is a better predictor than is handedness of emotional lateralization, Neuropsychologia, 36, pp. 37-43, (1998); Federolf P., Reid R., Gilgien M., Haugen P., Smith G., The application of principal component analysis to quantify technique in sports, Scandinavian Journal of Medicine and Science in Sports, 24, pp. 491-499, (2014); Technical guide for soccer schools, pp. 77-79, (2003); Huijgen B.C.H., Elferink-Gemser M.T., Post W., Visscher C., Development of dribbling in talented youth soccer players aged 12–19 years: A longitudinal study, Journal of Sports Sciences, 28, pp. 689-698, (2010); Jolliffe I.T., Principal component analysis, pp. 93-99, (2002); Knapp B., Skill in sport: The attainment of proficiency, pp. 3-4, (1963); Lees A., Biomechanics applied to soccer skills, Science and Soccer, pp. 109-119, (2013); Malina R.M., Cumming S.P., Kontos A.P., Eisenmann J.C., Ribeiro B., Aroso J., Maturity-associated variation in sport-specific skills of youth soccer players aged 13–15 years, Journal of Sports Sciences, 23, pp. 515-522, (2005); Mapelli A., Zago M., Fusini L., Galante D., Colombo A., Sforza C., Validation of a protocol for the estimation of three-dimensional body center of mass kinematics in sport, Gait & Posture, 39, pp. 460-465, (2014); McCollum G., Leen T.K., Form and exploration of mechanical stability limits in erect stance, Journal of Motor Behavior, 21, pp. 225-244, (1989); Moore J.K., Kooijman J.D.G., Schwab A.L., Hubbard M., Rider motion identification during normal bicycling by means of principal component analysis, Multibody System Dynamics, 25, pp. 225-244, (2011); Reilly T., Williams A.M., Nevill A., Franks A., A multidisciplinary approach to talent identification in soccer, Journal of Sports Sciences, 18, pp. 695-702, (2000); Russell M., Kingsley M., Influence of exercise on skill proficiency in soccer, Sports Medicine, 41, pp. 523-539, (2011); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomechanics, 4, pp. 59-72, (2005); Sheppard J.M., Young W.B., Agility literature review: Classifications, training and testing, Journal of Sports Sciences, 24, pp. 919-932, (2006); Teixeira L.A., de Oliveira D.L., Romano R.G., Correa S.C., Leg preference and interlateral asymmetry of balance stability in soccer players, Research Quarterly for Exercise and Sport, 82, pp. 21-27, (2011); Troje N.F., Decomposing biological motion: A framework for analysis and synthesis of human gait patterns, Journal of Vision, 2, pp. 371-387, (2002); Vaeyens R., Malina R.M., Janssens M., Van Renterghem B., Bourgois J., Vrijens J., Philippaerts R.M., A multidisciplinary selection model for youth soccer: The Ghent Youth Soccer Project, British Journal of Sports Medicine, 40, pp. 928-934, (2006); Waldron M., Murphy A., A comparison of physical abilities and match performance characteristics among elite and subelite under-14 soccer players, Pediatric Exercise Science, 25, pp. 423-434, (2013); Young C., Reinkensmeyer D.J., Judging complex movement performances for excellence: A principal components analysis-based technique applied to competitive diving, Human Movement Science, 36, pp. 107-122, (2014); Zago M., Motta A.F., Mapelli A., Annoni I., Galvani C., Sforza C., Effect of leg dominance on the center-of-mass kinematics during an inside-of-the-foot kick in amateur soccer players, Journal of Human Kinetics, 42, pp. 51-61, (2014); Zago M., Piovan A.G., Annoni I., Ciprandi D., Iaia F.M., Sforza C., Dribbling determinants in sub-elite youth soccer players, Journal of Sports Sciences, 34, pp. 411-419, (2016)","C. Sforza; Department of Biomedical Sciences for Health, University of Milan, Milan, Italy; email: chiarella.sforza@unimi.it","","Routledge","14763141","","","27111261","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-84964461203" "Brinkmann D.J.; Koerger H.; Gollhofer A.; Gehring D.","Brinkmann, Daniel J. (57216970552); Koerger, Harald (36617467100); Gollhofer, Albert (55851165900); Gehring, Dominic (36763456900)","57216970552; 36617467100; 55851165900; 36763456900","Effect of forefoot and midfoot bending stiffness on agility performance and foot biomechanics in soccer","2020","Journal of Applied Biomechanics","36","2","","96","102","6","2","10.1123/JAB.2019-0115","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85085552973&doi=10.1123%2fJAB.2019-0115&partnerID=40&md5=57f89f9095188dd45d3d8927dbede4f8","Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany; Advanced Creation – Testing, adidas AG, Herzogenaurach, Germany","Brinkmann D.J., Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany; Koerger H., Advanced Creation – Testing, adidas AG, Herzogenaurach, Germany; Gollhofer A., Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany; Gehring D., Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany","Footwear bending stiffness is known to positively affect performance in agility maneuvers due to improved energy storage and propulsion based on a stiffer foot–shoe complex. However, the functional properties of the forefoot and midfoot differ. Therefore, the present study investigates the effect of the interface of longitudinal bending stiffness and the ratio of forefoot to midfoot bending stiffness on agility performance and foot biomechanics. A total of 18 male soccer players performed 2 agility tasks in footwear conditions that were systematically modified in forefoot and midfoot bending stiffness. Results revealed that higher longitudinal bending stiffness caused more foot exorotation at the initial ground contact (P < .05), less torsion (P < .001), and an anterior shift in the point of force application during push off (P = .01). In addition, the authors observed decreased forefoot bending (P < .05) and increased torsion (P < .01) in footwear with a higher forefoot–midfoot ratio. Finally, the agility performance was significantly impaired by 1.3% in the condition with the highest forefoot–midfoot ratio (P < .01). The high forefoot–midfoot ratio, that is, a stiff forefoot in combination with a soft midfoot, seemed to shift the flex line from anterior to posterior that may explain the performance impairment. © 2020 Human Kinetics, Inc.","Change of direction; Footwear; Motion analysis; Outsole bending stiffness","Biomechanics; Football; Torsional stress; Bending stiffness; Foot biomechanics; Force application; Functional properties; Ground contacts; Mid-foot; Push offs; Soccer player; adult; agility; Article; athletic performance; biomechanics; foot; forefoot; human; human experiment; male; mechanical torsion; midfoot; motor performance; normal human; rigidity; running; soccer; task performance; young adult; Stiffness","Sheppard J., Young W., Agility literature review: Classifications, training and testing, J Sports Sci, 24, 9, pp. 919-932, (2006); Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in FA premier league soccer, J Sports Sci Med, 6, 1, pp. 63-72, (2007); Brughelli M., Cronin J., Levin G., Chaouachi A., Understanding change of direction in sport: A review of resistance training studies, Sports Med, 38, 12, pp. 1045-1063, (2008); Dos'santos T., Thomas C., Comfort P., Jones P.A., The effect of angle and velocity on change of direction biomechanics: An angle-velocity trade-off, Sports Med, 48, 10, pp. 2235-2253, (2018); Stefanyshyn D.J., Fusco C., Increased shoe bending stiffness increases sprint performance, Sports Biomech, 3, 1, pp. 55-66, (2004); Tinoco N., Bourgit D., Morin J.B., Influence of midsole metatarsophalangeal stiffness on jumping and cutting movement abilities, Proc Inst Mech Eng Part P J Sport Eng Technol, 224, 3, pp. 209-217, (2010); Worobets J., Wannop J.W., Influence of basketball shoe mass, outsole traction, and forefoot bending stiffness on three athletic movements, Sports Biomech, 14, 3, pp. 351-360, (2015); Roy J.-P.R., Stefanyshyn D.J., Shoe midsole longitudinal bending stiffness and running economy, joint energy, and EMG, Med Sci Sports Exerc, 38, 3, pp. 562-569, (2006); Hoogkamer W., Kipp S., Frank J.H., Farina E.M., Luo G., Kram R., A comparison of the energetic cost of running in marathon racing shoes, Sports Med, 48, 4, pp. 1009-1019, (2018); Nigg B.M., Stefanyshyn D.J., Denoth J., Mechanical considerations of work and energy, Biomechanics and Biology of Movement, pp. 5-18, (2000); Park S.-K., Lam W.-K., Yoon S., Lee K.-K., Ryu J., Effects of forefoot bending stiffness of badminton shoes on agility, comfort perception and lower leg kinematics during typical badminton movements, Sports Biomech, 16, 3, pp. 374-386, (2017); Stefanyshyn D.J., Nigg B.M., Influence of midsole bending stiffness on joint energy and jump height performance, Med Sci Sports Exerc, 32, 2, pp. 471-476, (2000); Willwacher S., Konig M., Potthast W., Bruggemann G.-P., Does specific footwear facilitate energy storage and return at the metatarsophalangeal joint in running?, J Appl Biomech, 29, 5, pp. 583-592, (2013); Holowka N.B., Lieberman D.E., Rethinking the evolution of the human foot: Insights from experimental research, J Exp Biol, 221, 17, (2018); Hicks J.H., The mechanics of the foot. 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The plantar aponeurosis and the arch, J Anat, 88, pp. 25-31, (1954); Kelly L.A., Cresswell A.G., Racinais S., Whiteley R., Lichtwark G., Intrinsic foot muscles have the capacity to control deformation of the longitudinal arch, J R Soc Interface, 11, 93, (2014); Hoogkamer W., Kram R., Arellano C.J., How biomechanical improvements in running economy could break the 2-hour marathon barrier, Sports Med, 47, 9, pp. 1739-1750, (2017); Moore I.S., Jones A.M., Dixon S.J., Reduced oxygen cost of running is related to alignment of the resultant GRF and leg axis vector: A pilot study, Scand J Med Sci Sports, 26, 7, pp. 809-815, (2016); Oleson M., Adler D., Goldsmith P., A comparison of forefoot stiffness in running and running shoe bending stiffness, J Biomech, 38, 9, pp. 1886-1894, (2005); Flores N., Delattre N., Berton E., Rao G., Effects of shoe energy return and bending stiffness on running economy and kinetics, Footwear Sci, 9, pp. S11-S13, (2017); Carrier D.R., Heglund N.C., Earls K.D., Variable gearing during locomotion in the human musculoskeletal system, Science, 265, 5172, pp. 651-653, (1994); Willwacher S., Konig M., Braunstein B., Goldmann J.P., Bruggemann G.P., The gearing function of running shoe longitudinal bending stiffness, Gait Posture, 40, 3, pp. 386-390, (2014); Noghondar F.A., Bressel E., Effect of shoe insole density on impact characteristics and performance during a jump-landing task, Footwear Sci, 9, 2, pp. 95-101, (2017); Wannop J.W., Killick A., Madden R., Stefanyshyn D.J., The influence of gearing footwear on running biomechanics, Footwear Sci, 9, 2, pp. 111-119, (2017); Oh K., Park S., The bending stiffness of shoes is beneficial to running energetics if it does not disturb the natural MTP joint flexion, J Biomech, 53, pp. 127-135, (2017); Oh K., Park S., An optimal bending stiffness of running shoes to improve running efficiency, Footwear Sci, 9, pp. S139-S141, (2017); Smith G., Lake M., Sterzing T., Milani T., The influence of sprint spike bending stiffness on sprinting performance and metatarsophalangeal joint function, Footwear Sci, 8, 2, pp. 109-118, (2016); Ford K.R., Taylor J.B., Baellow A.L., Arpante A.K., Wright K.E., Nguyen A.-D., Effects of plate stiffness on first metatarsophalangeal joint motion during unanticipated cutting and resisted sled pushing in football players, Footwear Sci, 8, 2, pp. 75-82, (2016); Willwacher S., Kurz M., Menne C., Schrodter E., Bruggemann G.-P., Biomechanical response to altered footwear longitudinal bending stiffness in the early acceleration phase of sprinting, Footwear Sci, 8, 2, pp. 99-108, (2016); Menne C., Bruggemann G.-P., Willwacher S., The influence of sole longitudinal bending stiffness on push off biomechanics in full effort linear acceleration, 34th International Conference of Biomechanics in Sport, pp. 438-441, (2016); Takahashi K.Z., Gross M.T., van Werkhoven H., Piazza S.J., Sawicki G.S., Adding stiffness to the foot modulates soleus force-velocity behaviour during human walking, Sci Rep, 6, (2016); Leardini A., Benedetti M.G., Berti L., Bettinelli D., Nativo R., Giannini S., Rear-foot, mid-foot and fore-foot motion during the stance phase of gait, Gait Posture, 25, 3, pp. 453-462, (2007); Nester C.J., Liu A.M., Ward E., Et al., In vitro study of foot kinematics using a dynamic walking cadaver model, J Biomech, 40, 9, pp. 1927-1937, (2007); Vienneau J., Nigg S.R., Tomaras E.K., Enders H., Nigg B.M., Soccer shoe bending stiffness significantly alters game-specific physiology in a 25-minute continuous field-based protocol, Footwear Sci, 8, 2, pp. 83-90, (2016); Chen C.H., Tu K.H., Liu C., Shiang T.Y., Effects of forefoot bending elasticity of running shoes on gait and running performance, Hum Mov Sci, 38, pp. 163-172, (2014); Stefanyshyn D.J., Wannop J.W., The influence of forefoot bending stiffness of footwear on athletic injury and performance, Footwear Sci, 8, 2, pp. 51-63, (2016); Fraser S., Harland A., Smith P., Lucas T., A study of football footwear bending stiffness, Procedia Eng, 72, pp. 315-320, (2014); David S., Muller R., Komnik I., Potthast W., Rotation and braking strategies to perform a successful cutting maneuver, 35th International Conference of Biomechanics in Sport, pp. 85-88, (2017); Fleischmann J., Gehring D., Mornieux G., Gollhofer A., Load-dependent movement regulation of lateral stretch shortening cycle jumps, Eur J Appl Physiol, 110, pp. 177-187, (2010); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (1988); Willwacher S., Schuck F., Fischer K., Bruggemann G.-P., Is it all about the shoe? Biomechanical response to minimalistic and conventional footwear in habitually shod and unshod runners using different running techniques, Footwear Sci, 7, pp. S121-S122, (2015); Graf E., Wannop J.W., Schlarb H., Stefanyshyn D.J., Effect of torsional stiffness on biomechanical variables of the lower extremity during running, Footwear Sci, 9, 1, pp. 1-8, (2017); Graf E.S., Stefanyshyn D.J., The effect of footwear torsional stiffness on lower extremity kinematics and kinetics during lateral cutting movements, Footwear Sci, 5, 2, pp. 101-109, (2013); Kelly L.A., Cresswell A.G., Farris D.J., The energetic behaviour of the human foot across a range of running speeds, Sci Rep, 8, (2018); Fernandez P.J., Holowka N.B., Demes B., Jungers W.L., Form and function of the human and chimpanzee forefoot: Implications for early hominin bipedalism, Sci Rep, 6, (2016); McDonald K.A., Stearne S.M., Alderson J.A., North I., Pires N.J., Rubenson J., The role of arch compression and metatarsophalangeal joint dynamics in modulating plantar fascia strain in running, PLoS One, 11, 4, (2016); Stearne S.M., McDonald K.A., Alderson J.A., North I., Oxnard C.E., Rubenson J., The foot’s arch and the energetics of human locomotion, Sci Rep, 6, (2016); Forrester S.E., Selecting the number of trials in experimental biomechanics studies, Int Biomech, 2, 1, pp. 62-72, (2015); Arnold J.B., Bishop C., Quantifying foot kinematics inside athletic footwear: A review, Footwear Sci, 5, 1, pp. 55-62, (2013); Sinclair J., Taylor P., Hebron J., Chockalingam N., Differences in multisegment foot kinematics measured using skin and shoe mounted markers, Foot Ankle Online J, 7, 2, (2014)","D.J. Brinkmann; Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany; email: daniel.brinkmann@sport.uni-freiburg.de","","Human Kinetics Publishers Inc.","10658483","","JABOE","32101791","English","J. Appl. Biomech.","Article","Final","","Scopus","2-s2.0-85085552973" "WDOWSKI M.M.; GITTOES M.J.R.","WDOWSKI, MAXIMILIAN M. (56008553700); GITTOES, MARIANNE J.R. (13205404600)","56008553700; 13205404600","Inter-limb step asymmetry in closed and open skill sprint accelerations in soccer players","2021","Human Movement","22","1","","1","8","7","2","10.5114/hm.2021.98458","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85099986631&doi=10.5114%2fhm.2021.98458&partnerID=40&md5=155d0b56073dbfb0f292ae8c5ef894e3","Faculty of Health and Life Sciences, Coventry University, Coventry, United Kingdom; Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom","WDOWSKI M.M., Faculty of Health and Life Sciences, Coventry University, Coventry, United Kingdom; GITTOES M.J.R., Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom","Purpose. Inter-limb differences may decrease sports performance. There is a need to understand the comparison of asymmetries between open and closed skill tasks. The study investigated inter-limb step asymmetry responses to closed and open skill acceleration sprint running tasks. Methods. 3D motion analysis kinematic data of step characteristics were collected from 20 male soccer players (mean ± SD: 21 ± 1.9 years, 78.7 ± 7.7 kg, 1.78 ± 0.06 m) for bilaterally located lower-limb markers during the initial 20 m of closed and open skill acceleration sprint running trials. Step velocity, step length, step frequency, flight time, contact time, and flight distance were calculated. In the closed skill conditions, players knew the final sprint distance before initiation. In the open skill conditions, players were informed of the final sprint distance (20 or 40 m) immediately after run initiation. Results. Significant asymmetries (0.10-10.3%, p < 0.05) in step characteristics were observed during closed skill acceleration sprint performances. Positive correlations (r: 0.51-0.77, p < 0.05) were evidenced between asymmetry scores in the closed skill and in the open skill 20-m and 40-m conditions. Asymmetry scores were not associated with sprint performance (r: From -0.13 to 0.30, p > 0.05), suggesting that asymmetry may be functional or dysfunctional. Conclusions. Skilled soccer players can regulate step characteristic asymmetries across closed and open skill tasks. Symmetry should not be assumed when assessing open and closed skill acceleration sprint performance in soccer players. Practitioners should be aware of these asymmetries when implementing programmes. © 2021 University School of Physical Education in Wroclaw. All rights reserved.","Biomechanics; Coaching; Deterministic models; Gait; Soccer training; Step characteristics","acceleration; adult; article; biomechanics; contact time; controlled study; gait; human; lower limb; male; motion; physician; running; skill; soccer player; step length","Keeley DW, Plummer HA, Oliver GD., Predicting asymmetrical lower extremity strength deficits in collegeaged men and women using common horizontal and vertical power field tests: A possible screening mechanism, J Strength Cond Res, 25, 6, pp. 1632-1637, (2011); Bishop C, Turner A, Read P., Effects of inter-limb asymmetries on physical and sports performance: A systematic review, J Sports Sci, 36, 10, pp. 1135-1144, (2018); Barber SD, Noyes FR, Mangine RE, McCloskey JW, Hartman W., Quantitative assessment of functional limitations in normal and anterior cruciate ligamentdeficient knees, Clin Orthop Relat Res, 255, pp. 204-214, (1990); Grindem H, Logerstedt D, Eitzen I, Moksnes H, Axe MJ, Snyder-Mackler L, Et al., Single-legged hop tests as predictors of self-reported knee function in nonoperatively treated individuals with anterior cruciate ligament injury, Am J Sports Med, 39, 11, pp. 2347-2354, (2011); Impellizzeri FM, Rampinini E, Maffiuletti N, Marcora SM., A vertical jump force test for assessing bilateral strength asymmetry in athletes, Med Sci Sports Exerc, 39, 11, pp. 2044-2050, (2007); Kyritsis P, Bahr R, Landreau P, Miladi R, Witvrouw E., Likelihood of ACL graft rupture: not meeting six clinical discharge criteria before return to sport is associated with a four times greater risk of rupture, Br J Sports Med, 50, 15, pp. 946-951, (2016); Hamill J, Bates BT, Knutzen KM., Ground reaction force symmetry during walking and running, Res Q Exercise Sport, 55, 3, pp. 289-293, (1984); Vagenas G, Hoshizaki B., Functional asymmetries and lateral dominance in the lower limbs of distance runners, Int J Sport Biomech, 7, 4, pp. 311-329, (1991); Zifchock RA, Davis I, Hamill J., Kinetic asymmetry in female runners with and without retrospective tibial stress fractures, J Biomech, 39, 15, pp. 2792-2797, (2006); Laroche DP, Cook SB, Mackala K., Strength asymmetry increases gait asymmetry and variability in older women, Med Sci Sports Exerc, 44, 11, pp. 2172-2181, (2012); Lockie RG, Murphy AJ, Schultz AB, Jefferiess MD, Callaghan SJ., Influence of sprint acceleration stance kinetics on velocity and step kinematics in field sport athletes, J Strength Cond Res, 27, 9, pp. 2494-2503, (2013); Moir G, Sanders R, Button C, Glaister M., The effect of periodized resistance training on accelerative sprint performance, Sports Biomech, 6, 3, pp. 285-300, (2007); Di Salvo V, Baron R, Gonzalez-Haro C, Gormasz C, Pigozzi F, Bachl N., Sprinting analysis of elite soccer players during European Champions League and UEFA Cup matches, J Sports Sci, 28, 14, pp. 1489-1494, (2010); Di Salvo V, Gregson W, Atkinson G, Tordoff P, Drust B., Analysis of high intensity activity in Premier League soccer, Int J Sports Med, 30, 3, pp. 205-212, (2009); Hunter JP, Marshall RN, McNair PJ., Interaction of step length and step rate during sprint running, Med Sci Sports Exerc, 36, 2, pp. 261-271, (2004); Meyers RW, Oliver JL, Hughes MG, Lloyd RS, Cronin JB., Asymmetry during maximal sprint performance in 11- to 16-year-old boys, Pediatr Exerc Sci, 29, 1, pp. 94-102, (2017); Exell T, Irwin G, Gittoes M, Kerwin D., Strength and performance asymmetry during maximal velocity sprint running, Scand J Med Sci Sports, 27, 11, pp. 1273-1282, (2017); Sanders R, Li S, Hamill J., Adjustment to change in familiar and unfamiliar task constraints, J Sports Sci, 27, 6, pp. 651-659, (2009); Sheppard JM, Young WB., Agility literature review: Classifications, training and testing, J Sports Sci, 24, 9, pp. 919-932, (2006); Araujo D, Davids K, Bennett SJ, Button C, Chapman G., Emergence of sport skills under constraints, Skill acquisition in sport: Research, theory and practice, pp. 409-433, (2004); Bezodis I, Thomson A, Gittoes M, Kerwin D., Identification of instants of touchdown and take-off in sprint running using an automatic motion analysis system, Proceedings of the 25th International Symposium on Biomechanics in Sports, pp. 501-504, (2007); Salo AIT, Bezodis IN, Batterham AM, Kerwin DG., Elite sprinting: Are athletes individually step-frequency or step-length reliant?, Med Sci Sports Exerc, 43, 6, pp. 1055-1062, (2011); Zifchock RA, Davis I, Higginson J, Royer T., The symmetry angle: A novel, robust method of quantifying asymmetry, Gait Posture, 27, 4, pp. 622-627, (2008); Zuzgina O, Wdowski MM., Asymmetry of dominant and non-dominant shoulders in university level men and women volleyball players, Hum Mov, 20, 4, pp. 19-27, (2019); Kugler PN, Turvey MT., Self-organization, flow fields, and information, Hum Mov Sci, 7, 2-4, pp. 97-129, (1988); Sheppard JM, Young WB, Doyle TLA, Sheppard TA, Newton RU., An evaluation of a new test of reactive agility and its relationship to sprint speed and change of direction speed, J Sci Med Sport, 9, 4, pp. 342-349, (2006); Bellon CR, DeWeese BH, Sato K, Clark KP, Stone MH., Defining the early, mid, and late subsections of sprint acceleration in Division I men's soccer players, J Strength Cond Res, 33, 4, pp. 1001-1006, (2019)","M.M. WDOWSKI; Science and Health Building, Faculty of Health and Life Sciences, Coventry University, Coventry, CV1 5FB, United Kingdom; email: ac6071@coventry.ac.uk","","University School of Physical Education in Wroclaw","17323991","","","","English","Hum. Mov.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85099986631" "Mathieu T.; Gielen J.; Vyncke G.; Stassijns G.","Mathieu, Thomas (57189239174); Gielen, Jan (55136734200); Vyncke, Guido (57218890858); Stassijns, Gaëtane (12796406700)","57189239174; 55136734200; 57218890858; 12796406700","Arcuate Pubic Ligament Injury—An Unknown Cause of Athletic Pubalgia","2020","Clinical Journal of Sport Medicine","30","5","","E175","E177","2","2","10.1097/JSM.0000000000000771","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85090613944&doi=10.1097%2fJSM.0000000000000771&partnerID=40&md5=508c5399b89f7706f4268a61f3237d7a","Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium; Department of Physical Medicine and Rehabilitation, Antwerp University Hospital, Edegem, Belgium; Department of Radiology, Antwerp University Hospital, Edegem, Belgium","Mathieu T., Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium, Department of Physical Medicine and Rehabilitation, Antwerp University Hospital, Edegem, Belgium; Gielen J., Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium, Department of Radiology, Antwerp University Hospital, Edegem, Belgium; Vyncke G., Department of Physical Medicine and Rehabilitation, Antwerp University Hospital, Edegem, Belgium; Stassijns G., Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium, Department of Physical Medicine and Rehabilitation, Antwerp University Hospital, Edegem, Belgium","A case report is presented that gives new insight into a very rare cause of athletic pubalgia. Up till now, no case has been published in literature about the relevance of an arcuate pubic ligament (APL) injury in athletic pubalgia. The APL or inferior pubic ligament is a thick triangular arch of ligamentous fibers connecting the 2 pubic bones below. The main function of the APL is to stabilize the symphysis pubis. The rupture of this ligament can lead to groin pain due to lack of stabilization of the symphysis pubis. Despite the importance of the anatomical and clinical function of the APL, very limited research is available about injuries of this ligament. This report describes a case of a traumatic left APL rupture, confirmed by magnetic resonance imaging, causing longstanding left groin pain in an amateur athlete. Copyright © 2019 Wolters Kluwer Health, Inc. All rights reserved.","Arcuate pubic ligament; Groin pain; Inferior pubic ligament; Pubalgia; Pubic symphysis","Adult; Gracilis Muscle; Groin; Humans; Ligaments, Articular; Magnetic Resonance Imaging; Male; Pain, Referred; Pelvic Girdle Pain; Platelet-Rich Plasma; Pubic Symphysis; Rupture; Soccer; antiinflammatory agent; corticosteroid; local anesthetic agent; adult; anamnesis; anatomy; arcuate pubic ligament injury; Article; athlete; athletic pubalgia; biomechanics; case report; clinical article; clinical feature; clinical outcome; conservative treatment; disease association; disease exacerbation; echography; human; image analysis; inguinal pain; interventional ultrasonography; joint injury; joint instability; ligament injury; ligament rupture; male; mesotherapy; nuclear magnetic resonance imaging; physical activity; physiotherapy; priority journal; pubis symphysis; radiography; rare disease; soccer player; stretching exercise; T2 weighted imaging; tendon; thrombocyte rich plasma; complication; diagnostic imaging; gracilis muscle; inguinal region; injury; joint ligament; pelvic girdle pain; referred pain; rupture; soccer","Tyler TF, Silvers HJ, Gerhardt MB, Et al., Groin injuries in sports medicine, Sports Health, 2, pp. 231-236, (2010); LeBlanc KE, LeBlanc KA., Groin pain in athletes, Hernia, 7, pp. 68-71, (2003); Kapandji AI., The Physiology of the Joints, Volume 3: The Spinal Column, Pelvic Girdle and Head, (2008); Hochschild J., Strukturen und Funktionen begreifen 02. Funktionelle Anatomie, (2012); Williams PL., Gray’s Anatomy, (1995); Brennan D, O'Connell MJ, Ryan M, Et al., Secondary cleft sign as a marker of injury in athletes with groin pain: MR image appearance and interpretation, Radiology, 235, pp. 162-167, (2005)","T. Mathieu; Physical Medicine and Rehabilitation, University Hospital of Antwerp, Antwerp, Wilrijkstraat 10, 2650 Edegem, Belgium; email: Thomasmathieu.5@hotmail.com","","Lippincott Williams and Wilkins","1050642X","","CJSME","31453817","English","Clin. J. Sport Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85090613944" "Paolo S.D.; Grassi A.; Tosarelli F.; Crepaldi M.; Bragonzoni L.; Zaffagnini S.; Villa F.D.","Paolo, Stefano Di (58520280300); Grassi, Alberto (57205264407); Tosarelli, Filippo (57217386930); Crepaldi, Matteo (58523595900); Bragonzoni, Laura (7801511871); Zaffagnini, Stefano (7003438311); Villa, Francesco Della (55780654000)","58520280300; 57205264407; 57217386930; 58523595900; 7801511871; 7003438311; 55780654000","Two-Dimensional and Three-Dimensional Biomechanical Factors During 90° Change of Direction are Associated to Non-Contact ACL injury in Female Soccer Players","2023","International Journal of Sports Physical Therapy","18","4","","887","897","10","2","10.26603/001c.84308","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85166773613&doi=10.26603%2f001c.84308&partnerID=40&md5=6a433cdee6521722805335dd299c9331","Life Quality Studies, University of Bologna, Italy; 2nd Orthopaedic and Traumatologic Clinic, Istituto Ortopedico Rizzoli, Italy; Education and Research Department, Isokinetic Medical Group, Italy","Paolo S.D., Life Quality Studies, University of Bologna, Italy; Grassi A., 2nd Orthopaedic and Traumatologic Clinic, Istituto Ortopedico Rizzoli, Italy; Tosarelli F., Education and Research Department, Isokinetic Medical Group, Italy; Crepaldi M., Education and Research Department, Isokinetic Medical Group, Italy; Bragonzoni L., Life Quality Studies, University of Bologna, Italy; Zaffagnini S., 2nd Orthopaedic and Traumatologic Clinic, Istituto Ortopedico Rizzoli, Italy; Villa F.D., Education and Research Department, Isokinetic Medical Group, Italy","Background The two-dimensional (2D) video-analysis of the change of direction (COD) technique has never been used to attempt to predict the risk of ACL injury in female football players. Hypothesis/Purpose The purpose of the present pilot study was to prospectively investigate the biomechanical predictors of ACL injury during a COD task in female football players using both gold standard 3D motion capture and a qualitative scoring system based on 2D video-analysis. Study Design Prospective cohort study Methods Sixteen competitive female football (soccer) players (age 21.4 ± 4.3) performed a series of pre-planned 90° COD tasks. 3D motion data was recorded through 10 stereophotogrammetric cameras and a force platform. 2D frontal and transverse plane joint kinematics were computed through video-analysis from three high-speed cameras. A scoring system based on five criteria was adopted: limb stability, pelvis stability, trunk stability, shock absorption, and movement strategy. The players were prospectively followed for the next two consecutive football seasons and the occurrence of severe knee injuries was registered. Results Four players (25%) experienced an ACL injury. In 3D analysis, ACL-injured players showed greater knee valgus, knee internal rotation, and lower knee flexion (p= 0.017 – 0.029). Lower hip flexion coupled with greater external rotation (p= 0.003 – 0.042), ankle eversion, and contralateral pelvic drop (p<0.001) were also noted. In 2D analysis, ACL-injured players showed greater internal foot rotation, contralateral pelvic drop, lower knee flexion, and contralateral trunk tilt (moderate-to-large effect size). Pelvis stability and trunk stability showed the highest predictive value towards ACL injury. Total score was significantly lower in ACL-injured players with a moderate effect size (d=0.45). Conclusions Both 3D and 2D methodologies depicted biomechanical risk factors and offered predictive insights towards the ACL injury risk. Awareness should rise in women’s football regarding the high risk of ACL injury and the strategies to assess and mitigate it. © The Author(s).","2D video-analysis; ACL; biomechanics; change of direction; female football; injury prevention","adult; anterior cruciate ligament injury; anthropometry; Article; biomechanics; cohort analysis; female; hip flexion angle; human; joint injury; kinematics; knee function; motion capture; muscle injury; physiotherapy; pilot study; predictive value; prospective study; range of motion; scoring system; soccer player; valgus knee; videorecording","Geertsema C, Geertsema L, Farooq A, Et al., Injury prevention knowledge, beliefs and strategies in elite female footballers at the FIFA Women’s World Cup France 2019, Br J Sports Med, 55, 14, pp. 801-806, (2021); Peters CM, Hendry DT, Hodges NJ., A scoping review on developmental activities of girls’ and women’s sports, Front Sports Act Living, 4, (2022); Allen MM, Pareek A, Krych AJ, Et al., Are female soccer players at an increased risk of second anterior cruciate ligament injury compared with their athletic peers?, Am J Sports Med, 44, 10, pp. 2492-2498, (2016); Xiao M, Lemos JL, Hwang CE, Sherman SL, Safran MR, Abrams GD., Increased risk of ACL injury for female but not male soccer players on artificial turf versus natural grass: a systematic review and meta-analysis, Orthop J Sports Med, 10, 8, (2022); Akbari H, Sahebozamani M, Daneshjoo A, Amiri-Khorasani M, Shimokochi Y., Effect of the FIFA 11+ on landing patterns and baseline movement errors in elite male youth soccer players, J Sport Rehabil, 29, 6, pp. 730-737, (2020); Silvers-Granelli HJ, Bizzini M, Arundale A, Mandelbaum BR, Snyder-Mackler L., Does the FIFA 11+ injury prevention program reduce the incidence of ACL injury in male soccer players?, Clin Orthop Relat Res, 475, 10, pp. 2447-2455, (2017); Hewett TE, Bates NA., Preventive biomechanics: a paradigm shift with a translational approach to injury prevention, Am J Sports Med, 45, 11, pp. 2654-2664, (2017); Jones PA, Herrington LC, Graham-Smith P., Technique determinants of knee abduction moments during pivoting in female soccer players, Clin Biomech, 31, pp. 107-112, (2016); Bates NA, Myer GD, Hale RF, Schilaty ND, Hewett TE., Prospective frontal plane angles used to predict ACL strain and identify those at high risk for sports-related ACL injury, Orthop J Sports Med, 8, 10, (2020); Della Villa F, Di Paolo S, Santagati D, Et al., A 2D video-analysis scoring system of 90° change of direction technique identifies football players with high knee abduction moment, Knee Surg Sports Traumatol Arthrosc, 30, 11, pp. 3616-3625, (2021); Di Paolo S, Zaffagnini S, Tosarelli F, Et al., A 2D qualitative movement assessment of a deceleration task detects football players with high knee joint loading, Knee Surg Sports Traumatol Arthrosc, 29, 12, pp. 4032-4040, (2021); Dos'Santos T, McBurnie A, Donelon T, Thomas C, Comfort P, Jones PA., A qualitative screening tool to identify athletes with ‘high-risk’ movement mechanics during cutting: The cutting movement assessment score (CMAS), Phys Ther Sport, 38, pp. 152-161, (2019); Straub RK, Powers CM., Utility of 2D video analysis for assessing frontal plane trunk and pelvis motion during stepping, landing, and change in direction tasks: a validity study, Int J Sports Phys Ther, 17, 2, pp. 139-147, (2022); Weir G, Alderson J, Smailes N, Elliott B, Donnelly C., A reliable video-based ACL injury screening tool for female team sport athletes, Int J Sports Med, 40, 3, pp. 191-199, (2019); Di Paolo S, Lopomo NF, Della Villa F, Et al., Rehabilitation and return to sport assessment after anterior cruciate ligament injury: quantifying joint kinematics during complex high-speed tasks through wearable sensors, Sensors, 21, 7, (2021); Buckthorpe M, Della Villa F, Della Villa S, Roi GS., On-field rehabilitation part 1: 4 pillars of high-quality on-field rehabilitation are restoring movement quality, physical conditioning, restoring sport-specific skills, and progressively developing chronic training load, J Orthop Sports Phys Ther, 49, 8, pp. 565-569, (2019); Hewett TE, Myer GD, Ford KR, Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Pataky TC, Vanrenterghem J, Robinson MA., Zero-vs. one-dimensional, parametric vs. non-parametric, and confidence interval vs. hypothesis testing procedures in one-dimensional biomechanical trajectory analysis, J Biomech, 48, 7, pp. 1277-1285, (2015); Ameer MA, Muaidi QI., Relation between peak knee flexion angle and knee ankle kinetics in single-leg jump landing from running: a pilot study on male handball players to prevent ACL injury, Phys Sportsmed, 45, 3, pp. 337-343, (2017); Nguyen AD, Zuk EF, Baellow AL, Pfile KR, DiStefano LJ, Boling MC., Longitudinal Changes in hip strength and range of motion in female youth soccer players: implications for ACL injury, a pilot study, J Sport Rehabil, 26, 5, pp. 358-364, (2017); Dix C, Arundale A, Silvers-Granelli H, Marmon A, Zarzycki R, Snyder-Mackler L., Biomechanical changes during a 90o cut in collegiate female soccer players with participation in the 11, Int J Sports Phys Ther, 16, 3, pp. 671-680, (2021); Donelon TA, Dos'Santos T, Pitchers G, Brown M, Jones PA., Biomechanical Determinants of knee joint loads associated with increased anterior cruciate ligament loading during cutting: a systematic review and technical framework, Sports Med Open, 6, 1, (2020); Lucarno S, Zago M, Buckthorpe M, Et al., Systematic Video analysis of anterior cruciate ligament injuries in professional female soccer players, Am J Sports Med, 49, 7, pp. 1794-1802, (2021); Sigurdsson HB, Karlsson J, Snyder-Mackler L, Briem K., Kinematics observed during ACL injury are associated with large early peak knee abduction moments during a change of direction task in healthy adolescents, J Orthop Res, 39, 10, pp. 2281-2290, (2020); Della Villa F, Buckthorpe M, Grassi A, Et al., Systematic video analysis of ACL injuries in professional male football (soccer): injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, Br J Sports Med, 54, 23, pp. 1423-1432, (2020); Hewett TE, Myer GD, Kiefer AW, Ford KR., Longitudinal Increases in knee abduction moments in females during adolescent growth, Med Sci Sports Exerc, 47, 12, pp. 2579-2585, (2015); Navacchia A, Bates NA, Schilaty ND, Krych AJ, Hewett TE., Knee Abduction and internal rotation moments increase ACL force during landing through the posterior slope of the tibia, J Orthop Res, 37, 8, pp. 1730-1742, (2019); Krosshaug T, Steffen K, Kristianslund E, Et al., The Vertical drop jump is a poor screening test for ACL injuries in female elite soccer and handball players: a prospective cohort study of 710 athletes, Am J Sports Med, 44, 4, pp. 874-883, (2016); Petushek E, Nilstad A, Bahr R, Krosshaug T., Drop jump? Single-leg squat? Not if you aim to predict anterior cruciate ligament injury from real-time clinical assessment: a prospective cohort study involving 880 elite female athletes, J Orthop Sports Phys Ther, 51, 7, pp. 372-378, (2021); Leppanen M, Pasanen K, Kujala UM, Et al., Stiff Landings are associated with increased ACL injury risk in young female basketball and floorball players, Am J Sports Med, 45, 2, pp. 386-393, (2017); Pollard CD, Sigward SM, Powers CM., Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments, Clinical Biomechanics, 25, 2, pp. 142-146, (2010); Dos'Santos T, Thomas C, McBurnie A, Comfort P, Jones PA., Biomechanical determinants of performance and injury risk during cutting: a performance-injury conflict?, Sports Med, 51, 9, pp. 1983-1998, (2021); Dingenen B, Malfait B, Vanrenterghem J, Robinson MA, Verschueren SMP, Staes FF., Can two-dimensional measured peak sagittal plane excursions during drop vertical jumps help identify three-dimensional measured joint moments?, Knee, 22, 2, pp. 73-79, (2015); Di Paolo S, Bragonzoni L, Della Villa F, Grassi A, Zaffagnini S., Do healthy athletes exhibit at-risk biomechanics for anterior cruciate ligament injury during pivoting movements?, Sports Biomechanics, pp. 1-14, (2022); Dix C, Arundale A, Silvers-Granelli H, Marmon A, Zarzycki R, Snyder-Mackler L., Biomechanical measures during two sport-specific tasks differentiate between soccer players who go on to anterior cruciate ligament injury and those who do not: a prospective cohort analysis, Int J Sports Phys Ther, 15, 6, pp. 928-935, (2020); Faltstrom A, Hagglund M, Hedevik H, Kvist J., Poor validity of functional performance tests to predict knee injury in female soccer players with or without anterior cruciate ligament reconstruction, Am J Sports Med, 49, 6, pp. 1441-1450, (2021); Beck NA, Lawrence JTR, Nordin JD, DeFor TA, Tompkins M., ACL Tears in school-aged children and adolescents over 20 years, Pediatrics, 139, 3, (2017); Weir G, van Emmerik R, Jewell C, Hamill J., Coordination and variability during anticipated and unanticipated sidestepping, Gait Posture, 67, pp. 1-8, (2019); Silvers-Granelli H., Why do female athletes injure their ACLs more frequently? What can we do to mitigate their risk?, Int J Sports Phys Ther, 16, 4, pp. 971-977, (2021)","","","North American Sports Medicine Institute","21592896","","","","English","Int. J. Sport. Phys. Ther.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85166773613" "Alizadeh S.; Sarvestan J.; Svoboda Z.; Alaei F.; Linduška P.; Ataabadi P.A.","Alizadeh, Shahab (57214103114); Sarvestan, Javad (57201477828); Svoboda, Zdeněk (56276850900); Alaei, Fatemeh (57201795354); Linduška, Petr (57202812111); Ataabadi, Peyman Aghaie (57218418714)","57214103114; 57201477828; 56276850900; 57201795354; 57202812111; 57218418714","Hamstring and ACL injuries impacts on hamstring-to-quadriceps ratio of the elite soccer players: A retrospective study","2022","Physical Therapy in Sport","53","","","97","104","7","3","10.1016/j.ptsp.2021.12.001","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85120867829&doi=10.1016%2fj.ptsp.2021.12.001&partnerID=40&md5=34a3394be7481fd0a2993be490c55f71","School of Human Kinetics and Recreation, Memorial University of Newfoundland, St. John's, NL, Canada; Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, Palacky University Olomouc, Olomouc, Czech Republic; Department of Biomechanics and Sports Injuries, Faculty of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran","Alizadeh S., School of Human Kinetics and Recreation, Memorial University of Newfoundland, St. John's, NL, Canada; Sarvestan J., Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, Palacky University Olomouc, Olomouc, Czech Republic; Svoboda Z., Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, Palacky University Olomouc, Olomouc, Czech Republic; Alaei F., Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, Palacky University Olomouc, Olomouc, Czech Republic; Linduška P., Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, Palacky University Olomouc, Olomouc, Czech Republic; Ataabadi P.A., Department of Biomechanics and Sports Injuries, Faculty of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran","This study aimed to compare the angle-specific (AS) and non-angle-specific (NAS) hamstring to quadriceps conventional and functional ratios between healthy, hamstring- and ACL-injured elite soccer players. One hundred and eleven players (27.42 ± 8.01 years, 182.11 ± 6.79 cm, 75.93 ± 7.25 kg) completed a series of concentric knee flexor and extensor strength in addition to eccentric knee flexor strength was measured at an angular velocity of 60°.s−1. Normalized and raw peak torque values, and the torque-angle profiles were extracted for analysis. Conventional and functional NAS (peak values) and AS (waveform ratios) hamstring to quadriceps ratios were calculated and compared between the groups. Healthy players produced greater functional and conventional ratios compared to players with either ACL or hamstring injury. Players with hamstring injury produced a lower AS functional ratios between 46° and 54° of knee flexion. Players suffering from ACL injury depicted a lower value for the AS functional ratio between 33° and 56° of knee flexion. Although NAS can identify soccer players with previous hamstring or ACL injury, the range where there is a strength deficiency is eluded. With the use of AS the range where the deficiency is present can be identified, and clinicians can benefit from this analysis to design robust rehabilitation protocols. © 2021","Biomechanics; Knee injury; Statistical parametric mapping; Strength","Anterior Cruciate Ligament Injuries; Hamstring Muscles; Humans; Muscle Strength; Quadriceps Muscle; Retrospective Studies; Soccer; Torque; adult; anterior cruciate ligament injury; Article; biomechanics; comparative study; controlled study; conventional angle specific hamstring to quadriceps ratio; conventional non angle specific hamstring to quadriceps ratio; cross-sectional study; elite athlete; extensor muscle; flexor muscle; functional angle specific hamstring to quadriceps ratio; functional non angle specific hamstring to quadriceps ratio; hamstring injury; hamstring muscle; human; knee function; major clinical study; male; muscle injury; muscle strength; musculoskeletal system parameters; professional athlete; quadriceps femoris muscle; retrospective study; soccer player; sport injury; torque; velocity; waveform; hamstring muscle; soccer","Alentorn-Geli E., Myer G.D., Silvers H.J., Samitier G., Romero D., Lazaro-Haro C., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players. 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A narrative review of hamstring injury mechanisms during high-speed running, Scandinavian Journal of Medicine & Science in Sports, 29, 8, pp. 1083-1091, (2019); Kovacikova Z., Sarvestan J., Gonosova Z., Linduska P., Zemkova E., Janura M., The association between anthropometric, lower limb strength, and balance variables with 5-repetition sit-to-stand test performance in physically active elderly women, Isokinetics And Exercise Science, pp. 1-6, (2020); Lee J.W., Mok K.-M., Chan H.C., Yung P.S., Chan K.-M., Eccentric hamstring strength deficit and poor hamstring-to-quadriceps ratio are risk factors for hamstring strain injury in football: A prospective study of 146 professional players, Journal of Science and Medicine in Sport, 21, 8, pp. 789-793, (2018); Lehance C., Binet J., Bury T., Croisier J.-L., Muscular strength, functional performances and injury risk in professional and junior elite soccer players, Scandinavian Journal of Medicine & Science in Sports, 19, 2, pp. 243-251, (2009); 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Pieters D., Witvrouw E., Wezenbeek E., Schuermans J., Value of isokinetic strength testing for hamstring injury risk assessment: Should the ‘strongest'mates stay ashore?, European Journal of Sport Science, pp. 1-12, (2020); von Porat A., Roos E.M., Roos H., High prevalence of osteoarthritis 14 years after an anterior cruciate ligament tear in male soccer players: A study of radiographic and patient relevant outcomes, Annals of the Rheumatic Diseases, 63, 3, pp. 269-273, (2004); Roth R., Donath L., Kurz E., Zahner L., Faude O., Absolute and relative reliability of isokinetic and isometric trunk strength testing using the IsoMed-2000 dynamometer, Physical Therapy in Sport, 24, pp. 26-31, (2017); Ruas C.V., Pinto R.S., Haff G.G., Lima C.D., Pinto M.D., Brown L.E., Alternative methods of determining hamstrings-to-quadriceps ratios: A comprehensive review, Sports Medicine - Open, 5, 1, (2019); Sarvestan J., Kovacikova Z., Linduska P., Gonosova Z., Svoboda Z., Contribution of lower limb muscle strength to walking, postural sway and functional performance in elderly women, Isokinetics And Exercise Science, 29, 1, pp. 49-57, (2020); Shimokochi Y., Shultz S.J., Mechanisms of noncontact anterior cruciate ligament injury, Journal of Athletic Training, 43, 4, pp. 396-408, (2008); Silder A., Reeder S.B., Thelen D.G., The influence of prior hamstring injury on lengthening muscle tissue mechanics, Journal of Biomechanics, 43, 12, pp. 2254-2260, (2010); Smith H.C., Vacek P., Johnson R.J., Slauterbeck J.R., Hashemi J., Shultz S., Et al., Risk factors for anterior cruciate ligament injury: A review of the literature—Part 2: Hormonal, genetic, cognitive function, previous injury, and extrinsic risk factors, Sport Health, 4, 2, pp. 155-161, (2011); Smith H.C., Vacek P., Johnson R.J., Slauterbeck J.R., Hashemi J., Shultz S., Et al., Risk factors for anterior cruciate ligament injury: A review of the literature — Part 1: Neuromuscular and anatomic risk, Sport Health, 4, 1, pp. 69-78, (2011); Soderman K., Alfredson H., Pietila T., Werner S., Risk factors for leg injuries in female soccer players: A prospective investigation during one out-door season, Knee Surgery, Sports Traumatology, Arthroscopy, 9, 5, pp. 313-321, (2001); 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Wangensteen A., Tol J.L., Witvrouw E., Van Linschoten R., Almusa E., Hamilton B., Et al., Hamstring reinjuries occur at the same location and early after return to sport: A descriptive study of MRI-confirmed reinjuries, The American Journal of Sports Medicine, 44, 8, pp. 2112-2121, (2016); Withrow T.J., Huston L.J., Wojtys E.M., Ashton-Miller J.A., Effect of varying hamstring tension on anterior cruciate ligament strain during in vitro impulsive knee flexion and compression loading, The Journal of Bone and Joint Surgery, 90, 4, (2008); Yu B., Garrett W.E., Mechanisms of non-contact ACL injuries, British Journal of Sports Medicine, 41, pp. i47-i51, (2007); Yu B., Queen R.M., Abbey A.N., Liu Y., Moorman C.T., Garrett W.E., Hamstring muscle kinematics and activation during overground sprinting, Journal of Biomechanics, 41, 15, pp. 3121-3126, (2008)","J. Sarvestan; Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, Palacky University Olomouc, Olomouc, Czech Republic; email: javadsarvestan@gmail.com","","Churchill Livingstone","1466853X","","PTSHB","34894617","English","Phys. Ther. Sport","Article","Final","","Scopus","2-s2.0-85120867829" "Burnie J.; Brodie D.A.","Burnie, J. (7005878911); Brodie, D.A. (16486249400)","7005878911; 16486249400","Isokinetics in the assessment of rehabilitation: a case report","1986","Clinical Biomechanics","1","3","","140","146","6","4","10.1016/0268-0033(86)90004-5","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0022768250&doi=10.1016%2f0268-0033%2886%2990004-5&partnerID=40&md5=67a0c95db040a39a97f6444b6b2b3876","School of Physical Education and Recreation, University of Liverpool, Liverpool, L69 3BX, United Kingdom","Burnie J., School of Physical Education and Recreation, University of Liverpool, Liverpool, L69 3BX, United Kingdom; Brodie D.A., School of Physical Education and Recreation, University of Liverpool, Liverpool, L69 3BX, United Kingdom","The purpose of this study was to quantify the rehabilitation of an English First Division soccer player by using the Cybex II Isokinetic system. The subject had received extensive injuries to the right knee during play. Isokinetic measurement permitted the objective assessment of the initial injury and the subsequent quantification of the effectiveness of the rehabilitation programme. The subject was required to repeat the same test protocol on three occasions 12, 20, and 27 weeks post-operatively. At the initial assessment bilateral comparative data provided the physiotherapist with objective rehabilitation targets based on the subject's own muscle function profile. Comparative data was also made available by testing an uninjured 'control' subject. In addition to conventional physiotherapeutic techniques, two different isokinetic devices were used in the subject's daily rehabilitative regime. On the final assessment, 27 weeks post-operatively, the subject showed a 344% increase in the peak torque of the quadriceps, and a 302% increase in the peak torque of the hamstrings. Range of movement increased from 40° to 106° and the bilateral deficit was reduced from 70% to 26% in the quadriceps, and from 52% to 16% in the hamstrings. © 1986.","Isokinetics; Knee-joint; Rehabilitation; Sports injury","BIOLOGICAL MATERIALS - Muscle; BIOMECHANICS - Testing; JOINTS; KINETICS - Measurements; adult; anterior cruciate ligament rupture; case report; education; hamstring; human; injury; isokinetic exercise; joint; joint mobility; knee cruciate ligament injury; knee ligament injury; ligament; muscle; muscle strength; quadriceps femoris muscle; therapy; ISOKINETICS; KNEE-JOINT; SPORTS INJURY; HUMAN REHABILITATION ENGINEERING","Hubbard, Comments on isokinetics, The Res. Quart., 50, pp. 528-530, (1979); Hinson, Smith, Funk, Isokinetics: a clarification, The Res. Quart., 50, pp. 30-35, (1979); Hislop, Perrine, The isokinetic concept of exercise, Phys Ther, 47, pp. 114-117, (1967); Thistle, Hislop, Moffroid, Lowman, Isokinetic contraction: a new concept of resistive exercise, Arch Phys Med Rehabil, 48, pp. 279-282, (1966); Wyatt, Patten, Edwards, Comparison of quadriceps and hamstring torque values during isokinetic exercise, Journal of Orthopaedic & Sports Physical Therapy, 3, pp. 48-56, (1981); Perrine, Isokinetic exercise and the mechanical energy potential of muscle, J Health Phys Ed Rec, 39, pp. 40-44, (1968); Moffroid, Whipple, Hofkosh, Lowman, Thistle, A study of isokinetic exercise, Phys Ther, 49, 7, pp. 735-747, (1969); Perrine, Isokinetic exercise process and apparatus, 3, (1969); Perrine, Isokinetic exercise process and apparatus, 3, (1969); Hill, The maximum work and mechanical efficiency of human muscles and their most economical speed, J Physiol, 56, pp. 19-41, (1922); Burnic, Brodie, Isokinetic measurement in preadolescent males, Int J Sports Med, 7, (1986); Perrine, Edgerton, Muscle force-velocity and power-velocity relationships under isokinetic loading, Med Sri Sports, 10, pp. 159-166, (1978); Caiozzo, Perrine, Edgerton, Training-induced alterations of the in vivo force-velocity relationship of human muscle, J Appl Physiol, 51, pp. 750-754, (1981); Sjogaard, Force-velocity curve for bicycle work, Biomechanics, 6 A, pp. 93-98, (1978); Ingemann-Hansen, Halkjaer-Kristensen, Force-velocity relationships in the human quadriceps muscles, Scand J Rehabil Med, 11, pp. 85-89, (1979); Parker, Ruhling, Bolen, Edge, Edwards, Aerobic training and the force-velocity relationship of the human quadriceps femoris muscle, J Sports Med, 23, pp. 136-147, (1983); Adeyanju, Crews, Meadores, Effects of two speeds of isokinetic training on muscular strength, power and endurance, J Sports Med, 23, pp. 352-356, (1983); Moffroid, Whipple, Specificity of speed of exercise, Phys Ther, 50, (1970); Oberg, Moller, Gillquist, Ekstrand, Isokinetic torque levels for knee extensors and knee flexors in soccer players, Int J Sports Med, 7, pp. 50-53, (1986); Cybex manual—a handbook for using Cybex 11 and the UBXT, (1982); Grace, Sweetser, Nelson, Ydens, Skipper, Isokinetic muscle imbalance and knee-joint injuries, J Bone Joint Surg, 66, 5, pp. 734-740, (1984); Stafford, Grana, Hamstring/quadriceps ratios in college football players: a high velocity evaluation, Am J Sports Med, 12, 3, pp. 209-211, (1984); Parker, Ruhling, Holt, Bauman, Drayna, Descriptive analysis of quadriceps and hamstring muscle torque in high school players, Journal of Orthopaedic & Sports Physical Therapy, pp. 2-6, (1983); Osternig, Sawhill, Bates, Hamill, Function of limb speed on torque patterns of antogonist muscle, Med Sci Sports, 13, pp. 251-257, (1981); Holmes, Alderink, Isokinetic strength characteristics of the quadriceps femoris and hamstring muscles in high school students, Phys Ther, 64, pp. 914-918, (1984); Burnie, Factors affecting selected reciprocal muscle group ratios in pre-adolescents, Int J Sports Med, (1986); Sharp, Costill, Force. work and power: what they mean to the competitive swimmer, Swimming World, pp. 42-43, (1982); Davies, Compendium of isokinetics in clinical usage and rehabilitation techniques, (1985); Sherman, Isokinetic rehabilitation after surgery, Am J Sports Med, 10, pp. 155-161, (1982)","","","","02680033","","CLBIE","","English","Clin. Biomech.","Article","Final","","Scopus","2-s2.0-0022768250" "Low D.C.; Dixon S.J.","Low, Daniel C. (56046523800); Dixon, Sharon J. (57203056377)","56046523800; 57203056377","Understanding the effect of changes to natural turf hardness on lower extremity loading","2014","Measurement and Control (United Kingdom)","47","7","","212","218","6","3","10.1177/0020294014546942","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84908611336&doi=10.1177%2f0020294014546942&partnerID=40&md5=5767a57716d87e418a2778c722fbb0e2","Sport and Exercise Science, Aberystwyth University, Aberystwyth, United Kingdom; Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom","Low D.C., Sport and Exercise Science, Aberystwyth University, Aberystwyth, United Kingdom; Dixon S.J., Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom","This investigation measures the biomechanical response of four soccer players (age 24 (standard deviation: 0.82) years, weight 74.6 (standard deviation: 6.9) kg, footwear size 10) to the seasonal changes that occur to a natural turf playing surface. The surface was tested on two occasions where participants wore a pair of soccer boots with six screw-in studs (metal cleat) and a pair with 15 rubber moulded studs (moulded cleat) in a 2 × 2 surface-footwear design. While running (3.0?m/s ± 5%) and performing a 180° turn (consistent self-selected ± 5%), data were collected using Footscan pressure insoles (500?Hz, (RSscan, Belgium)). These data included peak impact force, peak impact force loading rate and the peak pressures and peak pressure loading rate at the medial and lateral heel and first and fifth metatarsals. Multiple two-way repeated measures analyses of variance were conducted on the data and p-values, effect size and confidence intervals determined. Intraclass correlation coefficients were also used to determine the reliability of data during the turning movement. Study findings demonstrate that greater pressure magnitudes were experienced on the harder turf surfaces when running (p < 0.05) which may contribute to the greater risk of injury seen in the literature. The study results also show that the reliability of selected data collected during the 180° turning motion was good to excellent. For some measures of loading, particularly during turning, a larger confirmatory investigation is needed with sufficient statistical power to support these findings. © The Institute of Measurement and Control 2014.","","Football; Statistics; Biomechanical response; Confidence interval; Intraclass correlation coefficients; Peak impact forces; Repeated measures; Seasonal changes; Standard deviation; Statistical power; Studs (structural members)","Rao V.B., Hada K., Characteristics of rainfall over Brazil: Annual variations and connections with the southern oscillation, Theoretical and Applied Climatology, 42, pp. 81-91, (1990); Woods C., Hawkins R., Hulse M., Hodson A., The Football Association medical research programme: An audit of injuries in professional football - Analysis of preseason injuries, British Journal of Sports Medicine, 36, pp. 436-441, (2002); Stiles V.H., James I.T., Dixon S.J., Guisasola I.N., Natural turf surfaces: The case for continued research, Sports Medicine (Auckland, N.Z.), 39, 1, pp. 65-84, (2009); Ford K.R., Manson N.A., Evans B.J., Myer G.D., Gwin R.C., Comparison of in-shoe loading patterns on natural grass and synthetic turf, Journal of Science and Medicine in Sport, 9, pp. 433-440, (2006); Stiles V.H., James I.T., Dixon S.J., Guisasola I.N., Biomechanical response to changes in natural turf during running and turning, Journal of Applied Biomechanics, 27, 1, pp. 54-63, (2011); Dixon S.J., James I.T., Blackburn K., Pettican N., Low D., Influence of footwear and soil density on loading within the shoe and soil surface during running, Journal of Sports Engineering and Technology, 222, pp. 1-10, (2008); Orendurff M., Commentary 1 on 'A comparison of cleat types during two football-specific tasks on FieldTurf, British Journal of Sports Medicine, 42, (2008); Bates B.T., Osternig L.R., Sawhill J.A., James S.L., An assessment of subject variability, subject-shoe interaction, and the evaluation of running shoes using ground reaction force data, Journal of Biomechanics, 16, 3, pp. 181-191, (1983); Low D.C., Dixon S.J., Footscan pressure insoles: Accuracy and reliability of force and pressure measurements in running, Gait & Posture, 32, 4, pp. 664-666, (2010); Met Office. Climate Period: 1981-2010; Hopkins G.W., How to interpret changes in an athletic performance test, Sportscience, 8, pp. 1-7, (2004); Eils E., Streyl M., Linnenbecker S., Thorwesten L., Volker K., Characteristic plantar pressure distribution patterns during soccer-specific movements, The American Journal of Sports Medicine, 32, 1, pp. 140-145, (2004); Clinghan R., Arnold G.P., Drew T.S., Cochrane L.A., Abboud R.J., Do you get value for money when you buy an expensive pair of running shoes?, British Journal of Sports Medicine, 42, pp. 189-193, (2008); Nihal A., Trepman E., Nag D., First ray disorders in athletes, Sports Medicine and Arthroscopy Review, 17, 3, pp. 160-166, (2009); Wong P., Chamari K., Mao D.W., Wisloff U., Hong Y., Higher plantar pressure on the medial side in four soccer-related movements, British Journal of Sports Medicine, 41, pp. 93-100, (2007); Gardener M.J., Altman D.G., Confidence intervals rather than p values: Estimation rather than hypothesis testing, British Medical Journal, 292, 6522, pp. 746-750, (1986); Kraemer H.C., Mintz J., Noda A., Tinklenberg J., Yesavage J.A., Caution regarding the use of pilot studies to guide power calculations for study proposals, Archives of General Psychiatry, 63, pp. 484-489, (2006); Cohen J., Statistical Power Analysis for Behavioral Sciences, (1988); Nigg B.M., Cole C.K., Bruggerman G.-P., Impact forces during heel-toe running, Journal of Applied Biomechanics, 11, pp. 407-432, (1995); Stefanyshyn D.J., Stergiou P., Vmy L., Meeuwissse W.H., Dynamic variables and injuries in running, Proceedings of the Fifth Symposium on Footwear Biomechanics; Luethi S.M., Frederick E.C., Hawes M.R., Nigg B.M., Influence of shoe construction on lower extremity kinematics and load during lateral movements in tennis, Journal of Applied Biomechanics, 2, pp. 166-174, (1986); Dixon S.J., Stiles V.H., Impact absorption of tennis shoe-surface compositions, Sports Engineering, 6, pp. 1-10, (2003); Challis J., The variability in running gait caused by force plate targeting, Journal of Applied Biomechanics, 17, pp. 77-83, (2001)","","","SAGE Publications Ltd","00202940","","MEACB","","English","Meas. Control","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-84908611336" "Schall D.M.; Ishee J.H.; Titlow L.W.","Schall, David M. (57517879000); Ishee, Jimmy H. (6603241884); Titlow, Larry W. (6507797531)","57517879000; 6603241884; 6507797531","Effect of magnetic therapy on selected physical performances","2003","Journal of Strength and Conditioning Research","17","2","","299","302","3","3","10.1519/1533-4287(2003)017<0299:EOMTOS>2.0.CO;2","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0037527905&doi=10.1519%2f1533-4287%282003%29017%3c0299%3aEOMTOS%3e2.0.CO%3b2&partnerID=40&md5=796794bbf97c68ad85afc8d632277dfd","Human Performance Laboratory, Dept. of Kinesiology/Phys. Education, University of Central Arkansas, Conway, AR 72035, United States","Schall D.M., Human Performance Laboratory, Dept. of Kinesiology/Phys. Education, University of Central Arkansas, Conway, AR 72035, United States; Ishee J.H., Human Performance Laboratory, Dept. of Kinesiology/Phys. Education, University of Central Arkansas, Conway, AR 72035, United States; Titlow L.W., Human Performance Laboratory, Dept. of Kinesiology/Phys. Education, University of Central Arkansas, Conway, AR 72035, United States","The purpose of this study was to investigate the effects of magnetic therapy in the form of shoe insoles on vertical jump, bench squat, 40-yd dash, and a soccer-specific fitness test performance. Subjects were 14 collegiate male soccer players who were pretested, retested 3 weeks later, and then placed into a double-blind control or treatment group using a matching procedure. The control group received magnetic shoe insoles with a rating of 125 gauss, and the treatment group received insoles with a rating of 600 gauss. Subjects wore the insoles during practice and games for 7 weeks and were then retested. Results indicated significant differences among test scores during the 3 time periods but not between the treatment and control groups. There was a decline in 40-yd dash performance from the initial evaluation (5.10 seconds) to the final evaluation (5.08 seconds). There were no other significant differences. Within the limitations of the study, magnetic therapy did not improve physical performance.","Collegiate soccer players; Ergogenic aids","Adolescent; Adult; Analysis of Variance; Biomechanics; Double-Blind Method; Exertion; Humans; Magnetics; Male; Multivariate Analysis; Muscle Fatigue; Muscle, Skeletal; Physical Education and Training; Physical Endurance; Reference Values; Sensitivity and Specificity; Soccer; adult; article; controlled study; follow up; human; human experiment; jumping; magnetism; male; normal human; physical performance; scoring system; shoe; sport; statistical significance; task performance","Andrews E.L., A Magnetic Therapy for Arthritis Pain, (1993); Baker-Price L.A., Persinger M.A., Weak but complex pulsed magnetic fields may reduce depression following traumatic brain surgery, Percept. Mot. Skills, 83, pp. 491-498, (1996); Ball T.E., Dynamic-low repetition strength tests, Kirby's Guide to Fitness and Motor Performance Tests, pp. 407-409, (1991); Burton L., The vertical jump test, A Reference Manual for Human Performance Measurement in the Field of Physical Education and Sports Sciences, (1996); Campbell D., New Technology Relieves Chronic Pain With Magnets, (1997); Carney S., 50 Yard dash test, A Reference Manual for Human Performance Measurement in the Field of Physical Education and Sports Sciences, pp. 173-174, (1996); George M.S., Wasserman E.M., Kimbrell T.A., Little J.T., Williams W.E., Danielson A.L., Greenburg B.D., Hallert M., Post R.M., Mood improvement following prefrontal magnetic stimulation in patients with depression: A placebo controlled crossover trial, Am. J. Psychiatry, 154, pp. 1752-1756, (1997); Goldberg I.B., Magnetic field therapy, The Definitive Guide to Alternative Medicine, pp. 330-336, (1994); Jones D., Command performance: The use of pulsed magnetic fields in psychotherapy, Nature, 388, (1997); Kirkcaldie M.T.K., Pridmore S.A., Pascual-Leone A., Transcranial magnetic stimulation as therapy for depression and other disorders, Aust. N.Z. J. Psychiatry, 31, pp. 264-272, (1997); Magnet Therapy; Potteiger J.A., Aerobic exercise training, Essentials of Strength and Conditioning, pp. 495-509, (2000); Ramey D.W., Magnetic and electromagnetic therapy, Sci. Rev. Altern. Med., 1, pp. 1-16, (1998); Robinson R., Magnetic Field Therapy; Stone M.H., Nutritional factors in performance and health, Essentials of Strength and Training Conditioning, pp. 210-230, (1994); Szor J.K., Use of magnetic therapy on an abdominal wound: A case study, Ostomy Wound Manage., 44, pp. 24-29, (1998); Theramagnets; Valbona C., Hazelwood C.F., Gabor J., Response of pain to static magnetic fields in postpolio patients: A double-blind pilot study, Arch. Phys. Med. Rehabil., 78, pp. 1200-1203, (1997); Williams M.H., Nutrition for Health, Fitness, and Sport, (1999)","J.H. Ishee; Human Performance Laboratory, Dept. of Kinesiology/Phys. Education, University of Central Arkansas, Conway, AR 72035, United States; email: jishee@gcsu.edu","","","10648011","","","12741866","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-0037527905" "Brustio P.R.; Casale R.; Buttacchio G.; Calabrese M.; Bruzzone M.; Rainoldi A.; Boccia G.","Brustio, Paolo Riccardo (56578462300); Casale, Roberto (7006330550); Buttacchio, Giampiero (57193319171); Calabrese, Marzia (57206197005); Bruzzone, Marco (57206209899); Rainoldi, Alberto (6701835821); Boccia, Gennaro (55933534800)","56578462300; 7006330550; 57193319171; 57206197005; 57206209899; 6701835821; 55933534800","Relevance of evaluating the rate of torque development in ballistic contractions of submaximal amplitude","2019","Physiological Measurement","40","2","025002","","","","4","10.1088/1361-6579/aaff24","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85061616011&doi=10.1088%2f1361-6579%2faaff24&partnerID=40&md5=2ae8b50d980fa0898a04698ad1e09567","Department of Medical Sciences, NeuroMuscularFunction Research Group, School of Exercise and Sport Sciences, University of Turin, Turin, Italy; Habilita Care and Research Rehabilitation Unit, Zingonia Bergamo, Italy; Medical Staff, Atalanta BC, Bergamo, Italy","Brustio P.R., Department of Medical Sciences, NeuroMuscularFunction Research Group, School of Exercise and Sport Sciences, University of Turin, Turin, Italy; Casale R., Habilita Care and Research Rehabilitation Unit, Zingonia Bergamo, Italy; Buttacchio G., Habilita Care and Research Rehabilitation Unit, Zingonia Bergamo, Italy; Calabrese M., Habilita Care and Research Rehabilitation Unit, Zingonia Bergamo, Italy; Bruzzone M., Medical Staff, Atalanta BC, Bergamo, Italy; Rainoldi A., Department of Medical Sciences, NeuroMuscularFunction Research Group, School of Exercise and Sport Sciences, University of Turin, Turin, Italy; Boccia G., Department of Medical Sciences, NeuroMuscularFunction Research Group, School of Exercise and Sport Sciences, University of Turin, Turin, Italy","Objective: The neuromuscular quickness capacity can be assessed by calculating the rate of torque development (RTD) during ballistic contractions of maximal (RTDmaximal) or submaximal (RTDsubmaximal) amplitudes. In a series of ballistic contractions of submaximal amplitudes, the RTD scaling factor (RTD-SF) represents the slope of the linear regression between achieved peak torques and the corresponding RTD. First we investigated whether the RTD-SF contributes to the prediction, together with maximal voluntary torques (MVT), of the RTDmaximal. Then, we evaluated the agreement between the z-scores of RTDmaximal and RTDsubmaximal. Approach: The MVT was obtained for the quadriceps and hamstrings muscles of 22 elite young soccer players. RTD-SF was quantified in a series of ballistic contractions of submaximal and maximal amplitudes. RTDsubmaximal was estimated from the regression relationship between the peak torques and the corresponding RTD. Main results: MVT, RTD-SF and y-intercept in total accounted for 76.9 and 61.2% of the variance in RTDmaximal in quadriceps and hamstrings, respectively. Specifically, RTD-SF accounted for 13.7% and 18.7% of the variance in RTDmaximal, respectively. Generally, the agreement between the z-scores of RTDmaximal and RTDsubmaximal was poor both in quadriceps and hamstrings. Significance: These results suggest that RTD-SF may have a functional relevance in the relationship between MVT and RTDmaximal and influence the amount of torque that can be achieved in a quick muscle contraction. Moreover, evaluating the RTDsubmaximal does not provide results that are interchangeable with RTDmaximal. Thus, evaluating the RTD across the whole range of torque could provide additional meaningful information about neuromuscular quickness. © 2019 Institute of Physics and Engineering in Medicine.","","Adolescent; Biomechanical Phenomena; Female; Humans; Male; Muscle Contraction; Quadriceps Muscle; Torque; Ballistics; Muscle; Functional relevance; Muscle contractions; Regression relationship; Scaling factors; Soccer player; Z-scores; adolescent; biomechanics; female; human; male; muscle contraction; physiology; quadriceps femoris muscle; torque; Torque","Aagaard P., Simonsen E.B., Andersen J.L., Magnusson P., Dyhre-Poulsen P., Increased rate of force development and neural drive of human skeletal muscle following resistance training, J. Appl. Physiol., 93, pp. 1318-1326, (2002); Aalund P.K., Larsen K., Hansen T.B., Bandholm T., Normalized knee-extension strength or leg-press power after fast-track total knee arthroplasty: Which measure is most closely associated with performance-based and self-reported function?, Arch. Phys. Med. Rehabil., 94, pp. 384-390, (2013); Andersen L.L., Aagaard P., Influence of maximal muscle strength and intrinsic muscle contractile properties on contractile rate of force development, Eur. J. Appl. Physiol., 96, pp. 46-52, (2006); Angelozzi M., Madama M., Corsica C., Calvisi V., Properzi G., McCaw S.T., Cacchio A., Rate of force development as an adjunctive outcome measure for return-to-sport decisions after anterior cruciate ligament reconstruction, J. Orthop. Sports Phys. Ther., 42, pp. 772-780, (2012); Bellumori M., Jaric S., Knight C.A., The rate of force development scaling factor (RFD-SF): Protocol, reliability, and muscle comparisons, Exp. Brain Res., 212, pp. 359-369, (2011); Bellumori M., Jaric S., Knight C.A., Age-related decline in the rate of force development scaling factor, Motor Control, 17, pp. 370-381, (2013); Bellumori M., Uygur M., Knight C.A., High-speed cycling intervention improves rate-dependent mobility in older adults, Med. Sci. Sports Exerc., 49, pp. 106-114, (2017); Bland J.M., Altman D.G., Statistical methods for assessing agreement between two methods of clinical measurement, Lancet, 1, pp. 307-310, (1986); Boccia G., Brustio P.R., Buttacchio G., Calabrese M., Bruzzone M., Casale R., Rainoldi A., Interlimb asymmetries identified using the rate of torque development in ballistic contraction targeting submaximal torques, Frontiers Physiol., 9, (2018); Boccia G., Dardanello D., Brustio P.R., Tarperi C., Festa L., Zoppirolli C., Pellegrini B., Schena F., Rainoldi A., Neuromuscular fatigue does not impair the rate of force development in ballistic contractions of submaximal amplitudes, Frontiers Physiol., 9, (2018); Bozic P.R., Celik O., Uygur M., Knight C.A., Jaric S., Evaluation of novel tests of neuromuscular function based on brief muscle actions, J. Strength Cond. Res., 27, pp. 1568-1578, (2013); Buckthorpe M., Roi G.S., The time has come to incorporate a greater focus on rate of force development training in the sports injury rehabilitation process, Muscles Ligaments Tendons J., 7, pp. 435-441, (2017); Casartelli N.C., Lepers R., Maffiuletti N.A., Assessment of the rate of force development scaling factor for the hip muscles, Muscle Nerve, 50, pp. 932-938, (2014); Chang E., Norcross M.F., Johnson S.T., Kitagawa T., Hoffman M., Relationships between explosive and maximal triple extensor muscle performance and vertical jump height, J. Strength Cond. Res., 29, pp. 545-551, (2015); Chou L.W., Palmer J.A., Binder-Macleod S., Knight C.A., Motor unit rate coding is severely impaired during forceful and fast muscular contractions in individuals post stroke, J. Neurophysiol., 109, pp. 2947-2954, (2013); Cook R.D., Detection of influential observation in linear regression, Technometrics, 42, pp. 65-68, (2000); Djordjevic D., Uygur M., Methodological considerations in the calculation of the rate of force development scaling factor, Physiol. Meas., 39, (2017); Folland J.P., Buckthorpe M.W., Hannah R., Human capacity for explosive force production: Neural and contractile determinants, Scand. J. Med. Sci. Sports, 24, pp. 894-906, (2014); Freund H.J., Budingen H.J., The relationship between speed and amplitude of the fastest voluntary contractions of human arm muscles, Exp. Brain Res., 31, pp. 1-12, (1978); Gordon J., Ghez C., Trajectory control in targeted force impulses. II. Pulse height control, Exp. Brain Res., 67, pp. 241-252, (1987); Haberland K., Uygur M., Simultaneous assessment of hand function and neuromuscular quickness through a static object manipulation task in healthy adults, Exp. Brain Res., 235, pp. 321-329, (2017); Jenkins N.D., Housh T.J., Traylor D.A., Cochrane K.C., Bergstrom H.C., Lewis R.W., Schmidt R.J., Johnson G.O., Cramer J.T., The rate of torque development: A unique, non-invasive indicator of eccentric-induced muscle damage?, Int. J. Sports Med., 35, pp. 1190-1195, (2014); Klass M., Baudry S., Duchateau J., Age-related decline in rate of torque development is accompanied by lower maximal motor unit discharge frequency during fast contractions, J. Appl. Physiol., 104, pp. 739-746, (2008); Linden A., Conducting interrupted time-series analysis for single- and multiple-group comparisons, Stata J., 15, pp. 480-500, (2015); Maffiuletti N.A., Aagaard P., Blazevich A.J., Folland J., Tillin N., Duchateau J., Rate of force development: Physiological and methodological considerations, Eur. J. Appl. Physiol., 116, pp. 1091-1116, (2016); Maffiuletti N.A., Bizzini M., Desbrosses K., Babault N., Munzinger U., Reliability of knee extension and flexion measurements using the Con-Trex isokinetic dynamometer, Clin. Physiol. Funct. Imaging, 27, pp. 346-353, (2007); Maloney S.J., The relationship between asymmetry and athletic performance: A critical review, J. Strength Cond. Res., (2018); Mathern R.M., Anhorn M., Uygur M., A novel method to assess rate of force relaxation: Reliability and comparisons with rate of force development across various muscles, Eur. J. Appl. Physiol., 119, pp. 291-300, (2019); McGuigan M.R., Newton M.J., Winchester J.B., Nelson A.G., Relationship between isometric and dynamic strength in recreationally trained men, J. Strength Cond. Res., 24, pp. 2570-2573, (2010); Mirkov D.M., Knezevic O.M., Maffiuletti N.A., Kadija M., Nedeljkovic A., Jaric S., Contralateral limb deficit after ACL-reconstruction: An analysis of early and late phase of rate of force development, J. Sports Sci., 35, pp. 435-440, (2017); Mirkov D.M., Nedeljkovic A., Milanovic S., Jaric S., Muscle strength testing: Evaluation of tests of explosive force production, Eur. J. Appl. Physiol., 91, pp. 147-154, (2004); Opar D.A., Williams M.D., Shield A.J., Hamstring strain injuries: Factors that lead to injury and re-injury, Sports Med., 42, pp. 209-226, (2012); Park J.H., Stelmach G.E., Force development during target-directed isometric force production in Parkinson's disease, Neurosci. Lett., 412, pp. 173-178, (2007); Peltonen H., Walker S., Hackney A.C., Avela J., Hakkinen K., Increased rate of force development during periodized maximum strength and power training is highly individual, Eur. J. Appl. Physiol., 118, pp. 1033-1042, (2018); Penailillo L., Blazevich A., Numazawa H., Nosaka K., Rate of force development as a measure of muscle damage, Scand. J. Med. Sci. Sports, 25, pp. 417-427, (2015); Prebeg G., Cuk I., Suzovic D., Stojiljkovic S., Mitic D., Jaric S., Relationships among the muscle strength properties as assessed through various tests and variables, J. Electromyogr. Kinesiol., 23, pp. 455-461, (2013); Rodriguez-Rosell D., Pareja-Blanco F., Aagaard P., Gonzalez-Badillo J.J., Physiological and methodological aspects of rate of force development assessment in human skeletal muscle, Clin. Physiol. Funct. Imaging, 38, pp. 743-762, (2017); Rona R.J., Sundin J., Wood P., Fear N.T., Agreement between body mass index, waist circumference and skin-fold thickness in the United Kingdom Army, Ann. Hum. Biol., 38, pp. 257-264, (2011); Sahaly R., Vandewalle H., Driss T., Monod H., Maximal voluntary force and rate of force development in humans - Importance of instruction, Eur. J. Appl. Physiol., 85, pp. 345-350, (2001); Tillin N.A., Jimenez-Reyes P., Pain M.T., Folland J.P., Neuromuscular performance of explosive power athletes versus untrained individuals, Med. Sci. Sports Exerc., 42, pp. 781-790, (2010); Wierzbicka M.M., Wiegner A.W., Logigian E.L., Young R.R., Abnormal most-rapid isometric contractions in patients with Parkinson's disease, J. Neurol. Neurosurg. Psychiatry, 54, pp. 210-216, (1991); Wilson G.J., Murphy A.J., The use of isometric tests of muscular function in athletic assessment, Sports Med., 22, pp. 19-37, (1996)","G. Boccia; Department of Medical Sciences, NeuroMuscularFunction Research Group, School of Exercise and Sport Sciences, University of Turin, Turin, Italy; email: gennaro.boccia@unito.it","","IOP Publishing Ltd","09673334","","PMEAE","30650396","English","Physiol. Meas.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85061616011" "Boraczyński M.; Sozański H.","Boraczyński, Michał (56048039300); Sozański, Henryk (55487397200)","56048039300; 55487397200","RATE OF PHYSICAL DEVELOPMENT IN BOYS AGED 10-11 YEARS AND THE EFFECTS OF TRAINING LOADS DURING A 12-MONTH SOCCER PROGRAM; [DYNAMIKA ROZWOJU SOMATYCZNEGO CHŁOPCÓW W WIEKU 10-11 LAT A OBCIAZENIA TRENINGOWE ZREALIZOWANE W TOKU 12-MIESIECZNEGO PROGRAMU SZKOLENIA W PIŁCE NOZNEJ]","2015","Developmental period medicine","19","3","","367","374","7","2","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84965086664&partnerID=40&md5=3004d16087f8573de2d2023ecff211c5","","","AIM: The aim of the study was to evaluate the rate of physical development in prepubertal boys in response to training at different loads.; MATERIAL AND METHODS: The study involved two groups of soccer players, experimental groups E1 (n = 26, age 10.4 ± 0.6 years) and E2 (n = 27, age 10.3 ± 0.8 years) who were involved in a 12-month soccer training program, and a control group (C) of age-matched untrained boys (n = 22). The training protocol of E1 involved a greater share of coordination-based exercises, in E2 more focus was placed on conditioning fitness and strength. Body height, mass, fat percentage, and body mass index were measured pre-, peri-, and post-training. Chronological and developmental age were used to calculate a Biological State Maturity Index (BSMI).; RESULTS: Between-group differences were observed in body fat percentage, which was higher in the control group by 6.8% at post-training compared with E1 (p < 0.05). E1 showed the most congruence between chronological and developmental age. Developmental age was most retarded in E2 by an average of 4.3 months. Greatest between-group differences were observed in E1 and the control group for the BSMI of body height (49.9%) at pre-training. BSMI of height and mass in the control group were different (p < 0.01) from both experimental groups at pre-, peri-, and post-training.; CONCLUSIONS: 1. The experimental soccer training programs were conducive to the physical development of boys aged 10-11 years as evidenced by the absence of disturbances in the range of observed variables characterizing the body built and biological development. 2. Body mass index did not accurately reflect changes in body composition. A more detailed analysis of body composition is required in the recruitment and selection of young soccer players in order to better control the effects of training and diet. 3. The adopted BSMI measure indicated a delay in growth according to developmental age norms in the entire sample. However, the accelerated physical development in E1 during the study duration may be indicative of the stimulative effect of this group's training program and the adopted training load on physical development.","","Biomechanical Phenomena; Body Height; Body Mass Index; Child; Child Development; Energy Intake; Energy Metabolism; Exercise; Humans; Male; Physical Education and Training; Soccer; biomechanics; body height; body mass; caloric intake; child; child development; comparative study; energy metabolism; exercise; human; male; physical education; physiology; procedures; soccer","","","","","1428345X","","","26958683","Polish","Dev Period Med","Article","Final","","Scopus","2-s2.0-84965086664" "Bertozzi F.; Rabello R.; Zago M.; Esposito F.; Sforza C.","Bertozzi, Filippo (57197758376); Rabello, Rodrigo (57209451962); Zago, Matteo (57220045130); Esposito, Fabio (7102220772); Sforza, Chiarella (7005225305)","57197758376; 57209451962; 57220045130; 7102220772; 7005225305","Foot dominance and ball approach angle affect whole-body instep kick kinematics in soccer players","2022","Sports Biomechanics","","","","","","","2","10.1080/14763141.2022.2110514","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85136458514&doi=10.1080%2f14763141.2022.2110514&partnerID=40&md5=302bc892c38e4414f2cec5debd491af6","Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy; Department of Mechanical Engineering, Politecnico di Milano, Milan, Italy; E4Sport Lab, Politecnico di Milano, Milan, Italy","Bertozzi F., Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy, Department of Mechanical Engineering, Politecnico di Milano, Milan, Italy, E4Sport Lab, Politecnico di Milano, Milan, Italy; Rabello R., Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy; Zago M., Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy; Esposito F., Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy; Sforza C., Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy","Past investigations provided limited information regarding instep kicking kinematics in soccer. It is unclear how foot dominance and ball approach angle impact whole-body kinematics and consequently the ball velocity. We aimed to analyse the effects of the ball approach angle and the foot used on the whole-body kinematics of soccer players performing an instep kick. Twenty-four soccer players performed maximal instep kicks, using the dominant and non-dominant feet, with the ball stationary or rolling from four different directions. Whole-body motion was recorded during the kicking action and kinematic time-series were extracted and resampled to 200 points equally divided into kicking and follow-through phases. 1-D statistical parametric mapping two-way ANOVA tested for the effect of ball condition and foot dominance. Ball approach angle affected most of the swinging and support limb variables and some upper body variables. Performance-related variables such as CoM, foot, and shank velocities were reduced when the ball approached posteriorly. The linear and angular velocities of the swinging limb, and CoM vertical position, were higher when kicking with dominant foot. Based on these findings, as a practical implication, coaches should vary ball approach angles and the foot used during kicking drills to improve technical effectiveness in various situations. © 2022 International Society of Biomechanics in Sports.","Kicking; kinematics; soccer; SPM; sports biomechanics","","Alcock A.M., Gilleard W., Hunter A.B., Baker J., Brown N., Curve and instep kick kinematics in elite female footballers, Journal of Sports Sciences, 30, 4, pp. 387-394, (2012); Augustus S., Mundy P., Smith N., Support leg action can contribute to maximal instep soccer kick performance: An intervention study, Journal of Sports Sciences, 35, 1, pp. 89-98, (2017); Ball K., Loading and performance of the support leg in kicking, Journal of Science and Medicine in Sport, 16, 5, pp. 455-459, (2013); Barbieri F.A., Gobbi L.T.B., Santiago P.R.P., Cunha S.A., Performance comparisons of the kicking of stationary and rolling balls in a futsal context, Sports Biomechanics, 9, 1, pp. 1-15, (2010); Barbieri F.A., Gobbi L.T.B., Santiago P.R.P., Cunha S.A., Dominant–non-Dominant asymmetry of kicking a stationary and rolling ball in a futsal context, Journal of Sports Sciences, 33, 13, pp. 1411-1419, (2015); Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, Journal of Sports Science & Medicine, 1, 3, pp. 72-79, (2002); Barone R., Macaluso F., Traina M., Leonardi V., Farina F., DiFelice V., Soccer players have a better standing balance in nondominant one-legged stance, Open Access Journal of Sports Medicine, 2, pp. 1-6, (2010); Bertozzi F., Porcelli S., Marzorati M., Pilotto A.M., Galli M., Sforza C., Zago M., Whole-body kinematics during a simulated sprint in flat-water kayakers, European Journal of Sport Science, (2021); Cappozzo A., Cappello A., Croce U.D., Pensalfini F., Surface-marker cluster design criteria for 3-d bone movement reconstruction, IEEE Transactions on Biomedical Engineering, 44, 12, pp. 1165-1174, (1997); Carey D.P., Smith G., Smith D.T., Shepherd J.W., Skriver J., Ord L., Rutland A., Footedness in world soccer: An analysis of France ’98, Journal of Sports Sciences, 19, 11, pp. 855-864, (2001); de Witt J.K., Hinrichs R.N., Mechanical factors associated with the development of high ball velocity during an instep soccer kick, Sports Biomechanics, 11, 3, pp. 382-390, (2012); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, 4, pp. 293-299, (2002); Egan C.D., Verheul M.H.G., Savelsbergh G.J.P., Effects of experience on the coordination of internally and externally timed soccer kicks, Journal of Motor Behavior, 39, 5, pp. 423-432, (2007); Elias L.J., Bryden M.P., Bulman-Fleming M.B., Footedness is a better predictor than is handedness of emotional lateralization, Neuropsychologia, 36, 1, pp. 37-43, (1998); Faul F., Erdfelder E., Buchner A., Lang A.-G., Statistical power analyses using G*Power 3.1: Tests for correlation and regression analyses, Behavior Research Methods, 41, 4, pp. 1149-1160, (2009); Fullenkamp A.M., Campbell B.M., Laurent C.M., Lane A.P., The contribution of trunk axial kinematics to poststrike ball velocity during maximal instep soccer kicking, Journal of Applied Biomechanics, 31, 5, pp. 370-376, (2015); Glazier P.S., Beyond animated skeletons: How can biomechanical feedback be used to enhance sports performance?, Journal of Biomechanics, 129, (2021); Hughes-Oliver C.N., Harrison K.A., Williams D.S.B., Queen R.M., Statistical parametric mapping as a measure of differences between limbs: Applications to clinical populations, Journal of Applied Biomechanics, 35, 6, pp. 377-387, (2019); Inoue K., Nunome H., Sterzing T., Shinkai H., Ikegami Y., Dynamics of the support leg in soccer instep kicking, Journal of Sports Sciences, 32, 11, pp. 1023-1032, (2014); Juarez D., Mallo J., De Subijana C.L., Navarro E., Kinematic analysis of kicking in young top-class soccer players, The Journal of Sports Medicine and Physical Fitness, 51, 3, pp. 366-373, (2011); Kapidzic A., Huremovic T., Biberovic A., Kinematic analysis of the instep kick in youth soccer players, Journal of Human Kinetics, 42, 1, pp. 81-90, (2014); Katis A., Giannadakis E., Kannas T., Amiridis I., Kellis E., Lees A., Mechanisms that influence accuracy of the soccer kick, Journal of Electromyography and Kinesiology, 23, 1, pp. 125-131, (2013); Katis A., Kellis E., Lees A., Age and gender differences in kinematics of powerful instep kicks in soccer, Sports Biomechanics, 14, 3, pp. 287-299, (2015); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Science & Medicine, 6, 2, pp. 154-165, (2007); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Medicine and Science in Sports and Exercise, 36, 6, pp. 1017-1028, (2004); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, 8, pp. 805-817, (2010); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, 3, pp. 211-234, (1998); Lees A., Rahnama N., Variability and typical error in the kinematics and kinetics of the maximal instep kick in soccer, Sports Biomechanics, 12, 3, pp. 283-292, (2013); 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Peacock J.C.A., Ball K., Strategies to improve impact efficiency in football kicking, Sports Biomechanics, 18, 6, pp. 608-621, (2019); Rabello R., Bertozzi F., Galli M., Zago M., Sforza C., Lower limbs muscle activation during instep kick in soccer: Effects of dominance and ball condition, Science and Medicine in Football, 6, 1, pp. 40-48, (2022); Robinson M.A., Vanrenterghem J., Pataky T.C., Statistical Parametric Mapping (SPM) for alpha-based statistical analyses of multi-muscle EMG time-series, Journal of Electromyography and Kinesiology, 25, 1, pp. 14-19, (2015); Ruscello B., Esposito M., Siligato G., Lunetta L., Marcelli L., Tanella L.P., Gabrielli P.R., D'Ottavio S., Gender differences in instep soccer kicking biomechanics, investigated through a 3D human motion tracker system, The Journal of Sports Medicine and Physical Fitness, 60, 8, pp. 1072-1080, (2020); Shan G., Westerhoff P., Soccer: Full‐body kinematic characteristics of the maximal instep Soccer kick by male soccer players and parameters related to kick quality, Sports Biomechanics, 4, 1, pp. 59-72, (2005); Shan G., Zhang X., From 2D leg kinematics to 3D full-body biomechanics-the past, present and future of scientific analysis of maximal instep kick in soccer, Sports Medicine, Arthroscopy, Rehabilitation, Therapy & Technology, 3, 1, (2011); Sinclair J., Fewtrell D., Taylor P.J., Atkins S., Bottoms L., Hobbs S.J., Three-dimensional kinematic differences between the preferred and non-preferred limbs during maximal instep soccer kicking, Journal of Sports Sciences, 32, 20, pp. 1914-1923, (2014); Sinclair J., Fewtrell D., Taylor P.J., Bottoms L., Atkins S., Hobbs S.J., Three-dimensional kinematic correlates of ball velocity during maximal instep soccer kicking in males, European Journal of Sport Science, 14, 8, pp. 799-805, (2014); Smith T., Gilleard W., Three-dimensional analysis of a lofted instep kick by male and female footballers, European Journal of Sport Science, 16, 1, pp. 57-64, (2016); Starosta W., Murphy W., Symmetry and asymmetry in shooting demonstrated by elite soccer players, Science and football: The proceedings of the first world congress on science and football, pp. 346-355, (1988); van den Tillaar R., Fuglstad P., Effect of instructions prioritizing speed or accuracy on kinematics and kicking performance in football players, Journal of Motor Behavior, 49, 4, pp. 414-421, (2017); Zago M., David S., Bertozzi F., Brunetti C., Gatti A., Salaorni F., Tarabini M., Galvani C., Sforza C., Galli M., Fatigue induced by repeated changes of direction in élite female football (soccer) players: Impact on lower limb biomechanics and implications for ACL injury prevention, Frontiers in Bioengineering and Biotechnology, 9, July, pp. 1-11, (2021); Zago M., Motta A.F., Mapelli A., Annoni I., Galvani C., Sforza C., Effect of leg dominance on the center-of-mass kinematics during an inside-of-the-foot kick in amateur soccer players, Journal of Human Kinetics, 42, 1, pp. 51-61, (2014)","F. Bertozzi; Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy; email: filippo.bertozzi@polimi.it","","Routledge","14763141","","","","English","Sports Biomech.","Article","Article in press","","Scopus","2-s2.0-85136458514" "Kunugi S.; Koumura T.; Myotsuzono R.; Masunari A.; Yoshida N.; Miyakawa S.; Mukai N.","Kunugi, Shun (57125778100); Koumura, Takashi (57203856093); Myotsuzono, Ryota (57217166647); Masunari, Akihiko (56262106000); Yoshida, Naruto (57125387000); Miyakawa, Shumpei (15769772200); Mukai, Naoki (7005409455)","57125778100; 57203856093; 57217166647; 56262106000; 57125387000; 15769772200; 7005409455","Ankle laxity affects ankle kinematics during a side-cutting task in male collegiate soccer athletes without perceived ankle instability","2020","Physical Therapy in Sport","46","","","89","96","7","3","10.1016/j.ptsp.2020.08.012","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85089999476&doi=10.1016%2fj.ptsp.2020.08.012&partnerID=40&md5=614c28becc5b1f74f76626efce6da637","Faculty of Liberal Arts and Sciences, Chukyo University, 101-2 Yagoto Honmachi, Showa-ku, Nagoya-shi, 466-8666, Aichi, Japan; Department of Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Ibaraki, Japan; Faculty of Sports Science, Kyushu Kyoritsu University, 1-8 Jiyugaoka, Kitakyushu Yahatanishi-ku, Fukuoka, 807-8585, Japan; Tokyo Verdy, Inc., 4051-1 Yanokuchi, Inagi-shi, 206-0812, Tokyo, Japan; Faculty of Health Care, Department of Acupuncture and Moxibusion, Teikyo Heisei University, 2-51-4 Higashi-ikebukuro, Toshima-ku, 170-8445, Tokyo, Japan; Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Ibaraki, Japan; Faculty of Health and Sport Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Ibaraki, Japan","Kunugi S., Faculty of Liberal Arts and Sciences, Chukyo University, 101-2 Yagoto Honmachi, Showa-ku, Nagoya-shi, 466-8666, Aichi, Japan; Koumura T., Department of Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Ibaraki, Japan; Myotsuzono R., Faculty of Sports Science, Kyushu Kyoritsu University, 1-8 Jiyugaoka, Kitakyushu Yahatanishi-ku, Fukuoka, 807-8585, Japan; Masunari A., Tokyo Verdy, Inc., 4051-1 Yanokuchi, Inagi-shi, 206-0812, Tokyo, Japan; Yoshida N., Faculty of Health Care, Department of Acupuncture and Moxibusion, Teikyo Heisei University, 2-51-4 Higashi-ikebukuro, Toshima-ku, 170-8445, Tokyo, Japan; Miyakawa S., Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Ibaraki, Japan; Mukai N., Faculty of Health and Sport Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Ibaraki, Japan","Objectives: To investigate whether ankle joint laxity alone influences lower limb kinematics during a side-cutting task. Design: A cross-sectional study. Setting: Sports medicine research laboratory. Participants: In total, 66 male collegiate soccer players with history of ankle sprains with no perceived ankle instability were categorised into three groups: no-laxity copers (n = 26), laxity copers (n = 23), and severe-laxity copers (n = 17). Main outcome measures: The hip, knee, ankle, rearfoot, midfoot, and forefoot kinematic data during the stance phase (0%–100% indicated initial contact to take-off) of a 45° side-cutting task were analysed using one-dimensional statistical parametric mapping. Results: The horizontal plane kinematics of the rearfoot differed significantly among the three groups during 30%–91% of the stance phase (P <.05). Severe-laxity copers exhibited a greater external rotation angle than no-laxity copers during 6%–14% and 32%–92% of the stance phase (P <.05). Conclusion: Our data suggest that severe ankle joint laxity affects rearfoot horizontal plane kinematics in individuals without perceived ankle instability performing a 45° side-cutting task. These findings could be used by clinicians in developing rehabilitation programs to prevent further ankle sprains in patients with severe ankle joint laxity. © 2020 Elsevier Ltd","Ankle sprains; Joint instability; Kinematics; Lateral ligament","Adult; Ankle; Ankle Injuries; Ankle Joint; Athletes; Biomechanical Phenomena; Cross-Sectional Studies; Foot; Humans; Joint Instability; Knee Joint; Lower Extremity; Male; Rotation; Soccer; Task Performance and Analysis; adult; ankle; ankle instability; ankle lateral ligament; ankle sprain; Article; athlete; controlled study; cross-sectional study; foot; hip; human; joint laxity; joint mobility; kinematics; knee; limb movement; male; medical history; priority journal; soccer; sports medicine; standing; young adult; ankle; ankle injury; biomechanics; injury; joint instability; lower limb; pathophysiology; rotation; task performance","Abdeen R., Comfort P., Starbuck C., Nester C., Ultrasound characteristics of foot and ankle structures in healthy, coper, and chronically unstable ankles, Journal of Ultrasound in Medicine, 38, pp. 917-926, (2019); Brown C.N., Ko J., Rosen A.B., Hsieh K., Individuals with both perceived ankle instability and mechanical laxity demonstrate dynamic postural stability deficits, Clinical biomechanics, 30, pp. 1170-1174, (2015); Brown C., Padua D., Marshall S.W., Guskiewicz K., Individuals with mechanical ankle instability exhibit different motion patterns than those with functional ankle instability and ankle sprain copers, Clinical biomechanics, 23, pp. 822-831, (2008); Brown C.N., Rosen A.B., Ko J., Ankle ligament laxity and stiffness in chronic ankle instability, Foot & Ankle International, 36, pp. 565-572, (2015); Croy T., Saliba S.A., Saliba E., Anderson M.W., Hertel J., Differences in lateral ankle laxity measured via stress ultrasonography in individuals with chronic ankle instability, ankle sprain copers, and healthy individuals, Journal of Orthopaedic & Sports Physical Therapy, 42, pp. 593-600, (2012); Faul F., Erdfelder E., Lang A.G., Buchner A., G∗Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences, Behavior Research Methods, 39, pp. 175-191, (2007); Fong D.T., Ha S.C., Mok K.M., Chan C.W., Chan K.M., Kinematics analysis of ankle inversion ligamentous sprain injuries in sports: Five cases from televised tennis competitions, The American Journal of Sports Medicine, 40, pp. 2627-2632, (2012); Fraser J.J., Hart J.M., Saliba S.F., Park J.S., Tumperi M., Hertel J., Multisegmented ankle-foot kinematics during gait initiation in ankle sprains and chronic ankle instability, Clinical biomechanics, 68, pp. 80-88, (2019); Gribble P.A., Delahunt E., Bleakley C., Caulfield B., Docherty C.L., Fong D.T.P., Et al., Selection criteria for patients with chronic ankle instability in controlled research: A position statement of the International ankle Consortium, Journal of Athletic Training, 49, pp. 121-127, (2014); Gulbrandsen M., Hartigan D.E., Patel K.A., Makovicka J.L., Tummala S.V., Chhabra A., Ten-year epidemiology of ankle injuries in men's and women's collegiate soccer players, Journal of Athletic Training, 54, pp. 881-888, (2019); Hertel J., Corbett R.O., An updated model of chronic ankle instability, Journal of Athletic Training, 54, pp. 572-588, (2019); Hiller C.E., Kilbreath S.L., Refshauge K.M., Chronic ankle instability: Evolution of the model, Journal of Athletic Training, 46, pp. 133-141, (2011); Hunt K.J., Hurwit D., Robell K., Gatewood C., Botser I.B., Matheson G., Incidence and epidemiology of foot and ankle injuries in elite collegiate athletes, The American Journal of Sports Medicine, 45, pp. 426-433, (2017); Karlsson J., Lansinger O., Lateral instability of the ankle joint, Clinical Orthopaedics and Related Research, pp. 253-261, (1992); Kim H., Son S.J., Seeley M.K., Hopkins J.T., Altered movement biomechanics in chronic ankle instability, coper, and control groups: Energy absorption and distribution implications, Journal of Athletic Training, 54, pp. 708-717, (2019); Koshino Y., Ishida T., Yamanaka M., Ezawa Y., Okunuki T., Kobayashi T., Et al., Kinematics and muscle activities of the lower limb during a side-cutting task in subjects with chronic ankle instability, Knee Surgery, Sports Traumatology, Arthroscopy, 24, pp. 1071-1080, (2016); Koshino Y., Ishida T., Yamanaka M., Samukawa M., Kobayashi T., Tohyama H., Toe-in landing increases the ankle inversion angle and moment during single-leg landing: Implications in the prevention of lateral ankle sprains, Journal of Sport Rehabilitation, 26, pp. 530-535, (2017); Kunugi S., Masunari A., Noh B., Mori T., Yoshida N., Miyakawa S., Cross-cultural adaptation, reliability, and validity of the Japanese version of the Cumberland ankle instability tool, Disability & Rehabilitation, 39, pp. 50-58, (2017); Leardini A., Benedetti M.G., Berti L., Bettinelli D., Nativo R., Giannini S., Rear-foot, mid-foot and fore-foot motion during the stance phase of gait, Gait & Posture, 25, pp. 453-462, (2007); Liu K., Gustavsen G., Royer T., Wikstrom E.A., Glutting J., Kaminski T.W., Increased ligament thickness in previously sprained ankle as measured by musculoskeletal ultrasound, Journal of Athletic Training, 50, pp. 193-198, (2015); Lohrer H., Nauck T., Arentz S., Scholl J., Observer reliability in ankle and calcaneocuboid stress radiography, The American Journal of Sports Medicine, 36, pp. 1143-1149, (2008); Panagiotakis E., Mok K.M., Fong D.T., Bull A.M.J., Biomechanical analysis of ankle ligamentous sprain injury cases from televised basketball games: Understanding when, how and why ligament failure occurs, Journal of Science and Medicine in Sport, 20, pp. 1057-1061, (2017); Pataky T.C., Generalized n-dimensional biomechanical field analysis using statistical parametric mapping, Journal of Biomechanics, 43, pp. 1976-1982, (2010); Rosen A.B., Ko J., Brown C.N., Diagnostic accuracy of instrumented and manual talar tilt tests in chronic ankle instability populations, Scandinavian Journal of Medicine & Science in Sports, 25, pp. e214-e221, (2015); Simpson J.D., Stewart E.M., Turner A.J., Macias D.M., Chander H., Knight A.C., Lower limb joint kinetics during a side-cutting task in participants with or without chronic ankle instability, Journal of Athletic Training, 55, pp. 169-175, (2020); Sjolander P., Johansson H., Djupsjobacka M., Spinal and supraspinal effects of activity in ligament afferents, Journal of Electromyography and Kinesiology, 12, pp. 167-176, (2002); Son S.J., Kim H., Seeley M.K., Hopkins J.T., Movement strategies among groups of chronic ankle instability, coper, and control, Medicine & Science in Sports & Exercise, 49, pp. 1649-1661, (2017); Van Rijn R.M., van Os A.G., Bernsen R.M., Luijsterburg P.A., Koes B.W., Bierma-Zeinstra S.M., What is the clinical course of acute ankle sprains? A systematic literature review, Americas Journal of Medicine, 121, pp. 324-331, (2008); Wikstrom E.A., Brown C.N., Minimum reporting standards for copers in chronic ankle instability research, Sports Medicine, 44, pp. 251-268, (2014); Yamamoto H., Yagishita K., Ogiuchi T., Sakai H., Shinomiya K., Muneta T., Subtalar instability following lateral ligament injuries of the ankle, Injury, 29, pp. 265-268, (1998)","S. Kunugi; Faculty of Liberal Arts and Sciences, Chukyo University, Nagoya-shi, 101-2 Yagoto Honmachi, Showa-ku, 466-8666, Japan; email: shun-kunugi@hotmail.com","","Churchill Livingstone","1466853X","","PTSHB","32890810","English","Phys. Ther. Sport","Article","Final","","Scopus","2-s2.0-85089999476" "Fábrica G.; López F.; Souto A.","Fábrica, G. (55654842400); López, F. (57212894921); Souto, A. (57188677830)","55654842400; 57212894921; 57188677830","Effects of power training in mechanical stiffness of the lower limbs in soccer players","2015","Revista Andaluza de Medicina del Deporte","8","4","","145","149","4","3","10.1016/j.ramd.2015.05.003","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84962265742&doi=10.1016%2fj.ramd.2015.05.003&partnerID=40&md5=d3e06a622dd86c765467ab78cc6a6c7c","Departamento de Biofísica, Unidad de Investigación en Biomecánica de la Locomoción Humana, Facultad de Medicina, Universidad de la República, General Flores 2125, Montevideo, Uruguay; Instituto Universitario Asociación Cristiana de Jóvenes, Colonia 1870, Montevideo, Uruguay","Fábrica G., Departamento de Biofísica, Unidad de Investigación en Biomecánica de la Locomoción Humana, Facultad de Medicina, Universidad de la República, General Flores 2125, Montevideo, Uruguay; López F., Departamento de Biofísica, Unidad de Investigación en Biomecánica de la Locomoción Humana, Facultad de Medicina, Universidad de la República, General Flores 2125, Montevideo, Uruguay; Souto A., Instituto Universitario Asociación Cristiana de Jóvenes, Colonia 1870, Montevideo, Uruguay","Objective The aim of this study was evaluate whether leg stiffness (Kleg) changes after power training. Methods Forty professional soccer players were divided into 2 groups (20 were assigned to the trained group and 20 to the control group). A quasi-experimental study with pre-post intervention was conducted to estimate Kleg before (period 1) and after a six-week period of power training (period 2). Leg stiffness was measured using a three-dimensional filming method while soccer players ran on a treadmill at 13 km/h. The heights of squat jumps (SJ) and countermovement jumps (CMJ) were measured and the pre-stretch augmentation (PSA) was calculated before and after the training period in both groups. Results We found a significant increase in Kleg after the power training program. Significant positive linear relationships between Kleg and SJ height were found in both periods and groups, while CMJ height was not correlated with Kleg in the trained group during period 2. No significant relationships were found between Kleg and PSA in either case. Conclusions We concluded that Kleg can change significantly after a short power training program. Based on our results and previous studies, we suggest that these changes could be mainly associated with adaptions at muscle control level. © 2015 Consejería de Educación, Cultura y Deporte de la Junta de Andalucía.","Biomechanics; Physiology; Power; Soccer; Sports","","Cavagna G.A., Franzetti P., Heglund N.C., Willems P., The determinants of the step frequency in running, trotting and hopping in man and other vertebrates, J Physiol, 399, pp. 81-92, (1988); Blickhan R., The spring-mass model for running and hopping, J Biomech, 22, pp. 1217-1227, (1989); McMahon T.A., Cheng G.C., The mechanics of running: How does stiffness couple with speed, J Biomech, 23, pp. 65-78, (1990); Kerdok A.E., Biewener A.A., McMahon T.A., Weyand P.G., Herr H.M., Energetics and mechanics of human running on surfaces of different stiffnesses, J Appl Physiol, 92, pp. 469-478, (2002); Farley C.T., Blickhan R., Saito J., Taylor C.R., Hopping frequency in humans: A test of how springs set stride frequency in bouncing gaits, J Appl Physiol, 71, pp. 2127-2132, (1991); Brughelli M., Cronin J., A review of research on the mechanical stiffness in running and jumping: Methodology and implications, Scand J Med Sci Sports, 18, pp. 417-426, (2008); Bobbert M.F., Cassius L.J.R., Spring-like leg behaviour, musculoskeletal mechanics and control in maximum and submaximum height human hopping, Philos Trans R Soc Lond B: Biol Sci, 366, pp. 1516-1529, (2011); Hobara H., Kanosue K., Suzuki S., Changes in muscle activity with increase in leg stiffness during hopping, Neurosci Lett, 418, pp. 55-59, (2007); O'Donoghue P.G., Time-motion analysis of work-rate in English FA Premier League soccer, Int J Perform Anal Sport, 2, pp. 36-43, (2002); Hobara H., Kimura K., Omuroc K., Gomi K., Muraoka T., Isob S., Et al., Determinants of difference in leg stiffness between endurance and power-trained athletes, J Biomech, 41, pp. 506-514, (2008); Clark R.A., The effect of training status on inter-limb joint stiffness regulation during repeated maximal sprints, J Sci Med Sport, 12, pp. 406-410, (2009); Rabita G., Couturier A., Lambertz D., Influence of training background on the relationships between plantarflexor intrinsic stiffness and overall musculoskeletal stiffness during hopping, Eur J Appl Physiol, 103, pp. 163-171, (2008); Chelly S.M., Denis C., Leg power and hopping stiffness: Relationship with sprint running performance, Med Sci Sports Exerc, 33, pp. 326-333, (2001); Butler R., Crowell I., Davis I., Lower extremity stiffness: Implications for performance and injury, Clin Biomech, 18, pp. 511-517, (2003); Laffaye G., Bardy B.G., Durey A., Leg stiffness and expertise in men jumping, Med Sci Sports Exerc, 37, pp. 536-543, (2005); Verkhoshansky Y., Todo Sobre El Método Pliométrico, (1999); Walshe A.D., Wilson G.J., Murphy A.J., The validity and reliability of a test of lower body musculotendinous stiffness, Eur J Appl Physiol Occup Physiol, 73, pp. 332-339, (1996); Hobara H., Inoue K., Omuro K., Muraoka T., Kanosue K., Determinant of leg stiffness during hopping.is frequency-dependent, Eur J Appl Physiol, 111, pp. 2195-2201, (2011); Hobara H., Kato E., Obayashi Y., Ogata T., Sex differences in relationship between passive ankle stiffness and leg stiffness during hopping, J Biomech, 45, pp. 2750-2754, (2012); Morin J.B., Dalleau G., Kyrolainen H., Jeannin T., Belli A., A simple method for measuring stiffness during running, J Appl Biomech, 21, pp. 167-180, (2005); Komi P.V., Stretch-shortening cycle: A powerful model to study normal and fatigued muscle, J Biomech, 33, pp. 1197-1206, (2000); Gaudino P., Gaudino G., Alberti G., Minetti A.E., Biomechanics and predicted energetics of sprinting on sand: Hints for soccer training, J Sci Med Sport, 16, pp. 271-275, (2013); Ferris D.P., Farley C.T., Interaction of leg stiffness and surfaces stiffness during human hopping, J Appl Physiol, 82, pp. 15-22, (1997); Herzog W., Skeletal Muscle Mechanics: From Mechanisms to Function, (2000); Petit J., Filippi G.M., Emonet-Denand F., Hunt C.C., Laporte Y., Changes in muscle stiffness produced by motor units of different types in peroneus longus muscle of cat, J Neurophysiol, 63, pp. 190-197, (1990)","G. Fábrica; Departamento de Biofísica, Unidad de Investigación en Biomecánica de la Locomoción Humana, Facultad de Medicina, Universidad de la República, Montevideo, General Flores 2125, Uruguay; email: cgfabrica@gmail.com","","Elsevier Doyma","18887546","","","","English","Rev. Andaluza Med. Deporte","Article","Final","All Open Access; Green Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-84962265742" "Farvardin F.; Almonroeder T.G.; Letafatkar A.; Thomas A.C.; Ataabadi P.A.","Farvardin, Flora (57372450500); Almonroeder, Thomas Gus (55668374500); Letafatkar, Amir (54407242300); Thomas, Abbey C. (57001033200); Ataabadi, Peyman Aghaie (57218418714)","57372450500; 55668374500; 54407242300; 57001033200; 57218418714","The Effects of Increasing Cognitive Load on Support Limb Kicking Mechanics in Male Futsal Players","2022","Journal of Motor Behavior","54","4","","438","446","8","2","10.1080/00222895.2021.2010639","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121116637&doi=10.1080%2f00222895.2021.2010639&partnerID=40&md5=ac53b57295b577e2a2979116a8e12e25","Department of Sport Injury and Corrective Exercise, Kharazmi University, Tehran, Iran; Health Professions, University of Wisconsin–La Crosse, La Crosse, WI, United States; Kinesiology, University of North Carolina at Charlotte, Charlotte, NC, United States","Farvardin F., Department of Sport Injury and Corrective Exercise, Kharazmi University, Tehran, Iran; Almonroeder T.G., Health Professions, University of Wisconsin–La Crosse, La Crosse, WI, United States; Letafatkar A., Department of Sport Injury and Corrective Exercise, Kharazmi University, Tehran, Iran; Thomas A.C., Kinesiology, University of North Carolina at Charlotte, Charlotte, NC, United States; Ataabadi P.A., Department of Sport Injury and Corrective Exercise, Kharazmi University, Tehran, Iran","Our objective was to examine the effects of cognitive load on support limb mechanics during a futsal kicking task. Twenty-one male futsal players completed kicks of a stationary ball without a secondary task (baseline), as well as kicks where cognitive load was increased by including a secondary cognitive task (dual-task) and requiring tracking of ball movement before the kick (pass). The athletes demonstrated less hip and knee flexion, higher loading rates, greater frontal and sagittal plane knee loading, and greater knee abduction for the dual-task condition, vs. baseline. They also demonstrated less knee flexion, higher loading rates, greater sagittal plane knee loading, and greater knee abduction for the pass condition, vs. baseline. It appears that cognitive load influences kicking mechanics. © 2021 Taylor & Francis Group, LLC.","attention; biomechanics; dual-task; motor control","Biomechanical Phenomena; Cognition; Humans; Knee Joint; Lower Extremity; Male; Soccer; Sports; biomechanics; cognition; human; knee; lower limb; male; soccer; sport","Ajuied A., Wong F., Smith C., Norris M., Earnshaw P., Back D., Davies A., Anterior cruciate ligament injury and radiologic progression of knee osteoarthritis: A systematic review and meta-analysis, The American Journal of Sports Medicine, 42, 9, pp. 2242-2252, (2014); Almonroeder T.G., Kernozek T., Cobb S., Slavens B., Wang J., Huddleston W., Divided attention during cutting influences lower extremity mechanics in female athletes, Sports Biomechanics, 18, 3, pp. 264-276, (2019); Almonroeder T.G., Kernozek T., Cobb S., Slavens B., Wang J., Huddleston W., Cognitive demands influence lower extremity mechanics during a drop vertical jump task in female athletes, Journal of Orthopaedic & Sports Physical Therapy, 48, 5, pp. 381-387, (2018); Angoorani H., Haratian Z., Mazaherinezhad A., Younespour S., Injuries in Iran futsal national teams: A comparison study of incidence and characteristics, Asian Journal of Sports Medicine, 5, 3, (2014); Barbieri F.A., Gobbi L.T.B., Santiago P.R.P., Cunha S.A., Performance comparisons of the kicking of stationary and rolling balls in a futsal context, Sports Biomechanics, 9, 1, pp. 1-15, (2010); Barbieri F.A., Gobbi L.T.B., Santiago P.R.P., Cunha S.A., Dominant–non-dominant asymmetry of kicking a stationary and rolling ball in a futsal context, Journal of Sports Sciences, 33, 13, pp. 1411-1419, (2015); Bell A.L., Brand R.A., Pedersen D.R., Prediction of hip joint centre location from external landmarks, Human Movement Science, 8, 1, pp. 3-16, (1989); Clagg S.E., Warnock A., Thomas J.S., Kinetic analyses of maximal effort soccer kicks in female collegiate athletes, Sports Biomechanics, 8, 2, pp. 141-153, (2009); Cohen J., A power primer, Psychological Bulletin, 112, 1, pp. 155-159, (1992); Collins T.D., Ghoussayni S.N., Ewins D.J., Kent J.A., A six degrees-of-freedom marker set for gait analysis: Repeatability and comparison with a modified Helen Hayes set, Gait & Posture, 30, 2, pp. 173-180, (2009); Dai B., Cook R.F., Meyer E.A., Sciascia Y., Hinshaw T.J., Wang C., Zhu Q., The effect of a secondary cognitive task on landing mechanics and jump performance, Sports Biomechanics, 17, 2, pp. 192-205, (2018); Daneshjoo A., Osman N.A.A., Sahebozamani M., Yusof A., Analysis of jumping-landing manoeuvers after different speed performances in soccer players, PLoS One, 10, 11, (2015); Della Villa F., Buckthorpe M., Grassi A., Nabiuzzi A., Tosarelli F., Zaffagnini S., Della Villa S., Systematic video analysis of ACL injuries in professional male football (soccer): Injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, British Journal of Sports Medicine, 54, 23, pp. 1423-1432, (2020); Dempster W.T., Space requirements of the seated operator: Geometrical, kinematic, and mechanical aspects of the body with special reference to the limbs, pp. 55-159, (1955); Faul F., Erdfelder E., Lang A.-G., Buchner A., G*Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences, Behavior Research Methods, 39, 2, pp. 175-191, (2007); Fedie R., Carlstedt K., Willson J.D., Kernozek T.W., Effect of attending to a ball during a side-cut maneuver on lower extremity biomechanics in male and female athletes, Sports Biomechanics, 9, 3, pp. 165-177, (2010); Fleddermann M.-T., Zentgraf K., Tapping the full potential? 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Puddle D.L., Maulder P.S., Ground reaction forces and loading rates associated with Parkour and traditional drop landing techniques, Journal of Sports Science & Medicine, 12, 1, pp. 122-129, (2013); Ruiz-Perez I., Lopez-Valenciano A., Elvira J.L., Garcia-Gomez A., De Ste Croix M., Ayala F., Epidemiology of injuries in elite male and female futsal: A systematic review and meta-analysis, Science and Medicine in Football, 5, 1, pp. 59-71, (2021); Scharfen H.-E., Memmert D., The relationship between cognitive functions and sport-specific motor skills in elite youth soccer players, Frontiers in Psychology, 10, (2019); Sepulveda F., Sanchez L., Amy E., Micheo W., Anterior cruciate ligament injury: Return to play, function and long-term considerations, Current Sports Medicine Reports, 16, 3, pp. 172-178, (2017); Shultz S.J., Schmitz R.J., Cameron K.L., Ford K.R., Grooms D.R., Lepley L.K., Myer G.D., Pietrosimone B., Anterior cruciate ligament research retreat VIII summary statement: An update on injury risk identification and prevention across the anterior cruciate ligament injury continuum, Journal of Athletic Training, 54, 9, pp. 970-984, (2019); Stephenson M.L., Hinshaw T.J., Wadley H.A., Zhu Q., Wilson M.A., Byra M., Dai B., Effects of timing of signal indicating jump directions on knee biomechanics in jump-landing-jump tasks, Sports Biomechanics, 17, 1, pp. 67-82, (2018); Walden M., Krosshaug T., Bjorneboe J., Andersen T.E., Faul O., Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: A systematic video analysis of 39 cases, British Journal of Sports Medicine, 49, 22, pp. 1452-1460, (2015); Walker J.M., Brunst C.L., Chaput M., Wohl T.R., Grooms D.R., Integrating neurocognitive challenges into injury prevention training: A clinical commentary, Physical Therapy in Sport: Official Journal of the Association of Chartered Physiotherapists in Sports Medicine, 51, pp. 8-16, (2021); Wickens C.D., Multiple resources and performance prediction, Theoretical Issues in Ergonomics Science, 3, 2, pp. 159-177, (2002); Widenhoefer T.L., Miller T.M., Weigand M.S., Watkins E.A., Almonroeder T.G., Training rugby athletes with an external attentional focus promotes more automatic adaptions in landing forces, Sports Biomechanics, 18, 2, pp. 163-173, (2019); Yu B., Lin C.-F., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clinical Biomechanics, 21, 3, pp. 297-305, (2006)","T.G. Almonroeder; Department of Health Professions, Physical Therapy Program, University of Wisconsin – La Crosse, La Crosse, 1300 Badger St., 54601, United States; email: almonroeder.thomas@gmail.com","","Routledge","00222895","","JMTBA","34866551","English","J. Mot. Behav.","Article","Final","","Scopus","2-s2.0-85121116637" "Mancini S.; Dickin D.C.; Hankemeier D.; Ashton C.; Welch J.; Wang H.","Mancini, Sophia (57823749100); Dickin, D. Clark (57195039981); Hankemeier, Dorice (54795182900); Ashton, Caroline (57823885400); Welch, Jordan (57824152000); Wang, Henry (56323990900)","57823749100; 57195039981; 54795182900; 57823885400; 57824152000; 56323990900","Effects of a soccer-specific vertical jump on lower extremity landing kinematics","2022","Sports Medicine and Health Science","4","3","","209","214","5","2","10.1016/j.smhs.2022.07.003","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85135199069&doi=10.1016%2fj.smhs.2022.07.003&partnerID=40&md5=292cb359618f9824d89bb402297d9f29","Biomechanics Laboratory, Ball State University, 47306, United States; School of Kinesiology, Ball State University, 2000 W University Avenue, Muncie, 47306, IN, United States","Mancini S., Biomechanics Laboratory, Ball State University, 47306, United States, School of Kinesiology, Ball State University, 2000 W University Avenue, Muncie, 47306, IN, United States; Dickin D.C., Biomechanics Laboratory, Ball State University, 47306, United States, School of Kinesiology, Ball State University, 2000 W University Avenue, Muncie, 47306, IN, United States; Hankemeier D., School of Kinesiology, Ball State University, 2000 W University Avenue, Muncie, 47306, IN, United States; Ashton C., Biomechanics Laboratory, Ball State University, 47306, United States, School of Kinesiology, Ball State University, 2000 W University Avenue, Muncie, 47306, IN, United States; Welch J., School of Kinesiology, Ball State University, 2000 W University Avenue, Muncie, 47306, IN, United States; Wang H., Biomechanics Laboratory, Ball State University, 47306, United States, School of Kinesiology, Ball State University, 2000 W University Avenue, Muncie, 47306, IN, United States","Anterior cruciate ligament (ACL) injury frequently occurs in female soccer athletes during deceleration movements such as landings. In soccer, landings mostly occur following jumping headers. Little research has been done to determine the mechanics that follow and how they compare to standard drop vertical jumps (DVJ). The purpose of this study was to analyze differences in kinematics between the DVJ and the soccer-specific vertical jump (SSVJ) in female soccer athletes to better assess the sport-specific risk for ACL injury. A secondary aim was to compare second landings (L2) to first landings (L1). Eight female recreational soccer athletes performed DVJs and SSVJs initiated from a 31 ​cm height. Motion capture was performed during landings and data were analyzed using repeated-measures ANOVA. SSVJs produced less peak hip flexion (p ​= ​0.03) and less peak knee flexion (p ​= ​0.002) than DVJs. SSVJs also demonstrated increased ankle plantarflexion at initial contact (IC) than DVJs (p ​= ​0.005). L2s produced less peak hip (p ​= ​0.007) and knee flexion (p ​= ​0.002) than L1s. SSVJs and L2s displayed a more erect landing posture than the DVJs and L1s at the hip and knee, a known ACL risk factor. The significant results between jump styles show that the SSVJ displays mechanics that are different from the DVJ. The SSVJ may be a better sport-specific screening tool for ACL injury mechanisms than the DVJ in soccer athletes as it has a more direct translation to the sport. © 2022 Chengdu Sport University","ACL; Female soccer athletes; Injury mechanisms; Jump landing; Kinematics","adult; analysis of variance; ankle plantarflexion angle; anterior cruciate ligament injury; Article; biomechanics; body position; controlled study; data analysis; drop vertical jump; female; hip; human; human experiment; jumping; kinematics; knee function; landing kinematics; leg movement; lower limb; normal human; risk assessment; risk factor; soccer; soccer player; soccer specific vertical jump; young adult","Mihata L.C.S., Beutler A.I., Boden B.P., Comparing the incidence of anterior cruciate ligament injury in collegiate lacrosse, soccer, and basketball players: implications for anterior cruciate ligament mechanism and prevention, Am J Sports Med, 34, 6, pp. 899-904, (2006); Nagelli C.V., Hewett T.E., Should return to sport be delayed until 2 years after anterior cruciate ligament reconstruction? biological and functional considerations, Sports Med, 47, 2, pp. 221-232, (2017); Lohmander L.S., Englund P.M., Dahl L.L., Roos E.M., The long-term consequence of anterior cruciate ligament and meniscus injuries: Osteoarthritis, Am J Sports Med, 35, 10, pp. 1756-1770, (2007); Boden B.P., Sheehan F.T., Torg J.S., Hewett T.E., Non-contact ACL Injuries: Mechanisms and Risk Factors, J Am Acad Orthop Surg, 18, 9, pp. 520-527, (2010); Hewett T.E., Myer G.D., Ford K.R., Anterior cruciate ligament injuries in female athletes: Part 1, mechanisms and risk factors, Am J Sports Med, 34, 2, pp. 299-311, (2006); Renstrom P., Ljungqvist A., Arendt E., Et al., Non-contact ACL injuries in female athletes: an International Olympic Committee current concepts statement, Br J Sports Med, 42, 6, pp. 394-412, (2008); Yu B., Garrett W.E., Mechanisms of non-contact ACL injuries, Br J Sports Med, 41, pp. i47-i51, (2007); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Wong P., Hong Y., Soccer injury in the lower extremities, Br J Sports Med, 39, 8, pp. 473-482, (2005); Bakker R., Tomescu S., Brenneman E., Hangalur G., Laing A., Chandrashekar N., Effect of sagittal plane mechanics on ACL strain during jump landing, J Orthop Res, 34, 9, pp. 1636-1644, (2016); Chappell J.D., Creighton R.A., Giuliani C., Et al., Kinematics and electromyography of landing preparation in vertical stop-jump: risks for noncontact anterior cruciate ligament injury, Am J Sports Med, 35, 2, pp. 235-241, (2007); Joseph A.M., Collins C.L., Henke N.M., Et al., A multisport epidemiologic comparison of anterior cruciate ligament injuries in high school athletics, J Athl Train, 48, 6, pp. 810-817, (2013); Malfait B., Dingenen B., Smeets A., Et al., Knee and hip joint kinematics predict quadriceps and hamstrings neuromuscular activation patterns in drop jump landings, PLoS ONE, 11, 4, (2016); Pollard C.D., Sigward S.M., Powers C.M., Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments, Clin Biomech (Bristol, Avon), 25, 2, pp. 142-146, (2010); Shultz S.J., Nguyen A.-D., Leonard M.D., Schmitz R.J., Thigh strength and activation as predictors of knee biomechanics during a drop jump task, Med Sci Sports Exerc, 41, 4, pp. 857-866, (2009); Taylor K.A., Terry M.E., Utturkar G.M., Et al., Measurement of in vivo anterior cruciate ligament strain during dynamic jump landing, J Biomech, 44, 3, pp. 365-371, (2011); Yeow C.H., Lee P.V., Goh J.C., An investigation of lower extremity energy dissipation strategies during single-leg and double-leg landing based on sagittal and frontal plane biomechanics, Hum Mov Sci, 30, 3, pp. 624-635, (2011); Decker M.J., Torry M.R., Wyland D.J., Sterett W.I., Steadman J.R., Gender differences in lower extremity kinematics, kinetics and energy absorption during landing, Clin Biomech (Bristol, Avon), 18, 7, pp. 662-669, (2003); Leppanen M., Pasanen K., Krosshaug T., Et al., Sagittal Plane Hip, Knee, and Ankle Biomechanics and the Risk of Anterior Cruciate Ligament Injury: A Prospective Study, Orthop J Sports Med, 5, 12, pp. 105-138, (2017); Malinzak R.A., Colby S.M., Kirkendall D.T., Et al., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech (Bristol, Avon), 16, 5, pp. 438-445, (2001); Chappell J.D., Yu B., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks, Am J Sports Med, 30, 2, pp. 261-267, (2002); Hewett T.E., Myer G.D., The mechanistic connection between the trunk, knee, and anterior cruciate ligament injury, Exerc Sport Sci Rev, 39, 4, pp. 161-166, (2011); Joseph M.F., Rahl M., Sheehan J., Et al., Timing of lower extremity frontal plane motion differs between female and male athletes during a landing task, Am J Sports Med, 39, 7, pp. 1517-1521, (2011); Sigward S.M., Pollard C.D., Powers C.M., The influence of sex and maturation on landing biomechanics: implications for anterior cruciate ligament injury, Scand J Med Sci Sports, 22, 4, pp. 502-509, (2012); Dai B., Mao D., Garrett W.E., Et al., Anterior cruciate ligament injuries in soccer: Loading mechanisms, risk factors, and prevention programs, J Sport Health Sci, 3, 4, pp. 299-306, (2014); DeMorat G., Weinhold P., Blackburn T., Chudik S., Garrett W., Aggressive quadriceps loading can induce noncontact anterior cruciate ligament injury, Am J Sports Med, 32, 2, pp. 477-483, (2004); Bencke J., Aagaard P., Zebis M.K., Muscle activation during ACL injury risk movements in young female athletes: a narrative review, Front Physiol, 9, (2018); Babbs C.F., Biomechanics of heading a soccer ball: implications for player safety, Sci. World J., 1, pp. 281-322, (2001); Hashemi J., Breighner R., Chandrashekar N., Et al., Hip extension, knee flexion paradox: a new mechanism for non-contact ACL injury, J Biomech, 44, 4, pp. 577-585, (2011); Tsai L.-C., Ko Y.-A., Hammond K.E., Xerogeanes J.W., Warren G.L., Powers C.M., Increasing hip and knee flexion during a drop-jump task reduces tibiofemoral shear and compressive forces: implications for ACL injury prevention training, J Sports Sci, 35, 24, pp. 2405-2411, (2017); Fox A.S., Bonacci J., McLean S.G., Spittle M., Saunders N., What is normal? female lower limb kinematic profiles during athletic tasks used to examine anterior cruciate ligament injury risk: a systematic review, Sports Med, 44, 6, pp. 815-832, (2014); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Bates N.A., Ford K.R., Myer G.D., Hewett T.E., Impact differences in ground reaction force and center of mass between the first and second landing phases of a drop vertical jump and their implications for injury risk assessment, J Biomech, 46, pp. 1237-1241, (2013); Bates N.A., Ford K.R., Myer G.D., Hewett T.E., Kinetic and kinematic differences between first and second landings of a drop vertical jump task: Implications for injury risk assessments, Clin Biomech (Bristol, Avon), 28, 4, pp. 459-466, (2013); Butler R., Willson J., Fowler D., Queen R.M., Gender Differences in Landing Mechanics Vary Depending on the Type of Landing, Clin J Sport Med, 23, 1, pp. 52-57, (2013); Avedesian J.M., Judge L.W., Wang H., Dickin D.C., Kinetic analysis of unilateral landings in female volleyball players after a dynamic and combined dynamic-static warm-up, J Strength Cond Res, 33, 6, pp. 1524-1533, (2019); Leppanen M., Pasanen K., Kujala U.M., Et al., Stiff landings are associated with increased ACL injury risk in young female basketball and floorball players, Am J Sports Med, 45, 2, pp. 386-393, (2017); Whyte E.F., Kennelly P., Milton O., Richter C., O'Connor S., Moran K.A., The effects of limb dominance and a short term, high intensity exercise protocol on both landings of the vertical drop jump: implications for the vertical drop jump as a screening tool, Sports Biomech, 17, 4, pp. 541-553, (2018); Dai B., Stephenson M.L., Ellis S.M., Donohue M.R., Ning X., Zhu Q., Concurrent tactile feedback provided by a simple device increased knee flexion and decreased impact ground reaction forces during landing, J Appl Biomech, 32, 3, pp. 248-253, (2016); Larwa J., Stoy C., Chafetz R.S., Boniello M., Franklin C., Stiff landings, core stability, and dynamic knee valgus: a systematic review on documented anterior cruciate ligament ruptures in male and female athletes, Int J Environ Res Public Health, 18, 7, (2021); Blackburn J.T., Padua D.A., Influence of trunk flexion on hip and knee joint kinematics during a controlled drop landing, Clin Biomech (Bristol, Avon), 23, 3, pp. 313-319, (2008); Blackburn J.T., Padua D.A., Sagittal-plane trunk position, landing forces, and quadriceps electromyographic activity, J Athl Train, 44, 2, pp. 174-179, (2009); Lin C.-F., Liu H., Gros M.T., Weinhold P., Garrett W.E., Yu B., Biomechanical risk factors of non-contact ACL injuries: A stochastic biomechanical modeling study, J Sport Health Sci, 1, 1, pp. 36-42, (2012); Sell T.C., Ferris C.M., Abt J.P., Et al., Predictors of proximal tibia anterior shear force during a vertical stop-jump, J Orthop Res, 25, 12, pp. 1589-1597, (2007); Quatman C.E., Quatman-Yates C.C., Hewett T.E., A “plane” explanation of anterior cruciate ligament injury mechanisms: a systematic review, Sports Med, 40, 9, pp. 729-746, (2010); Koga H., Nakamae A., Shima Y., Bahr R., Krosshaug T., Hip and ankle kinematics in noncontact anterior cruciate ligament injury situations: video analysis using model-based image matching, Am J Sports Med, 46, 2, pp. 333-340, (2018); Walden M., Krosshaug T., Bjorneboe J., Andersen T.E., Faul O., Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: a systematic video analysis of 39 cases, Br J Sports Med, 49, 22, pp. 1452-1460, (2015)","H. Wang; Muncie, 2000 W University Avenue, 47306, United States; email: hwang2@bsu.edu","","KeAi Communications Co.","26663376","","","","English","Sports Med. Health Sci.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85135199069" "Jones A.; Page R.; Brogden C.; Langley B.; Greig M.","Jones, Adam (57219941107); Page, Richard (56888317900); Brogden, Chris (56888703200); Langley, Ben (56684862500); Greig, Matt (23034263700)","57219941107; 56888317900; 56888703200; 56684862500; 23034263700","The influence of playing surface on the loading response to soccer-specific activity","2020","Journal of Sport Rehabilitation","29","8","","1166","1170","4","3","10.1123/JSR.2019-0327","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091186720&doi=10.1123%2fJSR.2019-0327&partnerID=40&md5=f2a1807fb599e471c5d43dcee30993ce","Sports Injuries Research Group, Department of Sport and Physical Activity, Edge Hill University, St. Helens Road, Ormskirk, United Kingdom","Jones A., Sports Injuries Research Group, Department of Sport and Physical Activity, Edge Hill University, St. Helens Road, Ormskirk, United Kingdom; Page R., Sports Injuries Research Group, Department of Sport and Physical Activity, Edge Hill University, St. Helens Road, Ormskirk, United Kingdom; Brogden C., Sports Injuries Research Group, Department of Sport and Physical Activity, Edge Hill University, St. Helens Road, Ormskirk, United Kingdom; Langley B., Sports Injuries Research Group, Department of Sport and Physical Activity, Edge Hill University, St. Helens Road, Ormskirk, United Kingdom; Greig M., Sports Injuries Research Group, Department of Sport and Physical Activity, Edge Hill University, St. Helens Road, Ormskirk, United Kingdom","Context: The influence of playing surface on injury risk in soccer is contentious, and contemporary technologies permit an in vivo assessment of mechanical loading on the player. Objective: To quantify the influence of playing surface on the PlayerLoad elicited during soccer-specific activity. Design: Repeated measures, field-based design. Setting: Regulation soccer pitches. Participants: Fifteen amateur soccer players (22.1 [2.4] y), injury free with ≥6 years competitive experience. Interventions: Each player completed randomized order trials of a soccer-specific field test on natural turf, astroturf, and third-generation artificial turf. GPS units were located at C7 and the mid-tibia of each leg to measure triaxial acceleration (100 Hz). Main Outcome Measures: Total accumulated PlayerLoad in each movement plane was calculated for each trial. Ratings of perceived exertion and visual analog scales assessing lower-limb muscle soreness were measured as markers of fatigue. Results: Analysis of variance revealed no significant main effect for playing surface on total PlayerLoad (P =.55), distance covered (P =.75), or postexercise measures of ratings of perceived exertion (P =.98) and visual analog scales (P =.61). There was a significant main effect for GPS location (P <.001), with lower total loading elicited at C7 than mid-tibia (P <.001), but with no difference between limbs (P =.70). There was no unit placement × surface interaction (P =.98). There was also a significant main effect for GPS location on the relative planar contributions to loading (P <.001). Relative planar contributions to loading in the anterioposterior: mediolateral:vertical planes was 25:27:48 at C7 and 34:32:34 at mid-tibia. Conclusions: PlayerLoad metrics suggest that playing surface does not influence mechanical loading during soccer-specific activity (not including tackling). Clinical reasoning should consider that PlayerLoad magnitude and axial contributions were sensitive to unit placement, highlighting opportunities in the objective monitoring of load during rehabilitation. © 2020 Human Kinetics, Inc.","Accelerometry; Ankle injury; PlayerLoad; Soccer pitch characteristics","Adult; Athletic Performance; Biomechanical Phenomena; Geographic Information Systems; Humans; Male; Physical Exertion; Poaceae; Soccer; Surface Properties; Young Adult; adult; athletic performance; biomechanics; exercise; geographic information system; human; male; physiology; Poaceae; soccer; surface property; young adult","Strutzenberger G, Cao HM, Koussev J, Potthast W, Irwin G., Effect of turf on the cutting movement of female football players, J Sport Health Sci, 3, pp. 314-319, (2014); Rennie DJ, Vanrenterghem J, Littlewood M, Drust B., Can the natural turf pitch be viewed as a risk factor for injury within Association Football?, J Sci Med Sport, 19, 7, pp. 547-552, (2016); Dragoo JL, Braun HJ., The effect of playing surface on injury rate: a review of the current literature, Sports Med, 40, 11, pp. 981-990, (2010); Encarnacion-Martinez A, Garcia-Gallart A, Gallardo AM, Sanchez-Saez JA, Sanchez-Sanchez J., Effects of structural components of artificial turf on the transmission of impacts in football players, Sports Biomech, 17, 2, pp. 251-260, (2018); Ataabadi YA, Sadeghi H, Alizadeh MH., The effects of artificial turf on the performance of soccer players and evaluating the risk factors compared to natural grass, Neurologic Res Therapy, 2, 2, pp. 1-16, (2017); Williams S, Hume PA, Kara S., A review of football injuries on third and fourth generation artificial turfs compared with natural turf, Sports Med, 41, 11, pp. 903-923, (2011); Ekstrand J, Hagglund M, Fuller CW., Comparison of injuries sustained on artificial turf and grass by male and female elite football players, Scand J Med Sci Sports, 21, 6, pp. 824-832, (2011); Steffen K, Andersen TE, Bahr R., Risk of injury on artificial turf and natural grass in young female football players, Br J Sports Med, 41, pp. i33-i37, (2007); Bjorneboe J, Bahr R, Andersen TE., Risk of injury on third generation artificial turf in Norwegian professional football, Br J Sports Med, 44, 11, pp. 794-798, (2010); Fuller CW, Dick RW, Corlette J, Schmalz R., Comparison of the incidence, nature and cause of injuries sustained on grass and new generation artificial turf by male and female football players. Part 1: match injuries, Br J Sports Med, 41, pp. i20-i26, (2007); Ekstrand J, Timpka T, Hagglund M., Risk of injury in elite football played on artificial turf versus natural grass: a prospective two-cohort study, Br J Sports Med, 40, 12, pp. 975-980, (2006); Fuller CW, Dick RW, Corlette J, Schmalz R., Comparison of the incidence, nature and cause of injuries sustained on grass and new generation artificial turf by male and female football players. Part 2: training injuries, Br J Sports Med, 41, pp. i27-i32, (2007); Barron DJ, Atkins S, Edmundson C, Fewtrell D., Accelerometer derived load according to playing position in competitive youth soccer, Int J Perf Analysis Sport, 14, pp. 734-743, (2014); Nedergaard NJ, Kersting U, Lake M., Using accelerometry to quantify deceleration during a high-intensity soccer turning manoeuvre, J Sports Sci, 32, 20, pp. 1897-1905, (2014); Brown W, Greig M., Tri-axial accelerometry as an injury predictor tool in elite soccer, Int J Athl Therapy Train, 22, 5, pp. 44-48, (2017); Bowen L, Gross AS, Gimpel M, Li FX., Accumulated workloads and the acute:chronic workload ratio relate to injury risk in elite youth football players, Br J Sports Med, 51, pp. 452-459, (2017); Wilkerson GB, Gupta A, Allen JR, Keith CM, Colston MA., Utilization of practice session average inertial load to quantify college football injury risk, J Strength Cond Res, 30, 9, pp. 2369-2374, (2016); Greig M, Nagy P., Lumbar and cervico-thoracic spine loading during a fast bowling spell, J Sport Rehabil, 26, 4, pp. 257-262, (2017); Greig M, Emmerson H, McCreadie J., Is there a role for GPS in determining functional ankle rehabilitation progression criteria? A preliminary study, J Sport Rehabil, 28, 7, pp. 729-734, (2019); Bangsbo J, Lindquist F., Comparison of various exercise tests with endurance performance during soccer in professional players, Int J Sports Med, 13, 2, pp. 125-132, (1992); Page RM, Marrin K, Brogden CM, Greig M., Biomechanical and physiology response to a contemporary soccer match-play simulation, J Strength Cond Res, 29, 10, pp. 2860-2866, (2015); Di Mechele R, Di Renzo AM, Ammazzalorso S, Merni F., Comparison of physiological responses to an incremental running test on treadmill, natural grass, and synthetic turf in young soccer players, J Strength Cond Res, 23, pp. 939-945, (2009); Boyd LJ, Ball K, Aughey RJ., The reliability of MinimaxX accelerometers for measuring physical activity in Australian football, Int J Sports Physiol Perform, 6, pp. 311-321, (2011); Andersson H, Ekblom B, Krustrup P., Elite football on artificial turf versus natural grass: movement patterns, technical standards, and player impressions, J Sports Sci, 26, pp. 113-122, (2008); Poulos CCN, Gallucci J, Gage WH, Baker J, Buitrago S, Macpherson AK., The perceptions of professional soccer players on the risk of injury from competition and training on natural grass and 3rd generation artificial turf, BMC Sports Sci Med Rehab, 6, 1, (2014); Akkurt S, Sucan S, Gumus A, Karakus M, Yilmaz A, Saka T., Comparison of muscle damage in Turkish collegian soccer players after playing matches on artificial and natural turf fields, Anthropol, 20, 3, pp. 423-429, (2015); Zhang S, Derrick TR, Evans W, Yu YJ., Shock and impact reduction in moderate and strenuous landing activities, Sports Biomech, 7, 2, pp. 296-309, (2008); Fish K, Greig M., The influence of playing position on the biomechanical demands of netball match-play, J Athl Enhanc, 3, (2015); Fujitaka K, Taniguchi A, Kumai T, Otuki S, Okubo M, Tanaka Y., Effect of changes in artificial turf on sports injuries in male university soccer players, Ortop J Sports Med, 5, 8, pp. 1-9, (2017); Kristenson K, Bjorneboe J, Walden M, Andersen TE, Ekstrand J, Hagglund M., The Nordic football injury audit: higher injury rates for professional football clubs with third-generation artificial turf at their home venue, Br J Sports Med, 47, pp. 775-781, (2013)","M. Greig; Sports Injuries Research Group, Department of Sport and Physical Activity, Edge Hill University, Ormskirk, St. Helens Road, United Kingdom; email: matt.greig@edgehill.ac.uk","","Human Kinetics Publishers Inc.","10566716","","JSRHE","32028255","English","J. Sport Rehabil.","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-85091186720" "Alanazi A.D.; Mitchell K.; Roddey T.; Alenazi A.M.; Alzhrani M.M.; Almansour A.M.; Ortiz-Rodriguez A.","Alanazi, Ahmad Dhahawi (57218652732); Mitchell, Katy (56372727200); Roddey, Toni (6602741290); Alenazi, Aqeel M. (56345932000); Alzhrani, Msaad M. (57194049552); Almansour, Ahmed M. (57222763108); Ortiz-Rodriguez, Alexis (57222763468)","57218652732; 56372727200; 6602741290; 56345932000; 57194049552; 57222763108; 57222763468","The effects of a high-intensity exercise bout on landing biomechanics post anterior cruciate ligament reconstruction: a quasi-experimental study","2021","BMC Sports Science, Medicine and Rehabilitation","13","1","36","","","","3","10.1186/s13102-021-00263-7","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104003383&doi=10.1186%2fs13102-021-00263-7&partnerID=40&md5=ed2a1cb4a41e58b55794f8272a6d69f8","Department of Physical Therapy, College of Applied Medical Sciences, Majmaah University, Al-Majmaah, 11952, Saudi Arabia; Texas Woman’s University, School of Physical Therapy, Houston, TX, United States; Department of Rehabilitation Sciences, Prince Sattam Bin Abdulaziz University, Alkharj, Saudi Arabia; School of Physical Therapy. University of the Incarnate Word, San Antonio, TX, United States","Alanazi A.D., Department of Physical Therapy, College of Applied Medical Sciences, Majmaah University, Al-Majmaah, 11952, Saudi Arabia; Mitchell K., Texas Woman’s University, School of Physical Therapy, Houston, TX, United States; Roddey T., Texas Woman’s University, School of Physical Therapy, Houston, TX, United States; Alenazi A.M., Department of Rehabilitation Sciences, Prince Sattam Bin Abdulaziz University, Alkharj, Saudi Arabia; Alzhrani M.M., Department of Physical Therapy, College of Applied Medical Sciences, Majmaah University, Al-Majmaah, 11952, Saudi Arabia; Almansour A.M., Department of Physical Therapy, College of Applied Medical Sciences, Majmaah University, Al-Majmaah, 11952, Saudi Arabia; Ortiz-Rodriguez A., School of Physical Therapy. University of the Incarnate Word, San Antonio, TX, United States","Background: We aimed to examine the effect of a high-intensity exercise bout on landing biomechanics in soccer players who underwent anterior cruciate ligament reconstruction (ACLR) and non-injured soccer players during a soccer-specific landing maneuver. Methods: Eighteen soccer players who underwent ACLR and 18 normal soccer players were enrolled in this investigation (ACLR group; age, 26.11 ± 3.95 years; body mass index, 23.52 ± 2.69 kg/m2; surgery time, 5 ± 3.30 years: control group; age, 25.83 ± 3.51 years; body mass index, 24.09 ± 3.73 kg/m2, respectively). Participants were evaluated during the landing maneuver before and after carrying out the high-intensity exercise bout using the Wingate test. The intensity of the exercise was defined as a blood lactate accumulation of at least 4 mmol/L. The dependent variables included sagittal-plane kinematics and kinetics of the ankle, knee and hip joints, and electromyography activity of the gastrocnemius, hamstrings, quadriceps, and gluteus maximus. Results: On 2 × 2 analysis of variance, none of the dependent variable showed significant exercise×group interactions. Regardless of group, significant main effects of exercise were found. Post-exercise landing was characterized by increased flexion of hip (p = 0.01), knee (p = 0.001), and ankle joints (p = 0.002); increased extension moments of hip (p = 0.009), knee (p = 0.012), and ankle joints (p = 0.003), as well as decreased quadriceps activity (p = 0.007). Conclusion: At 1 year or more post-ACLR, the effect of the high-intensity exercise bout on landing biomechanics is not expected to differ from that experienced by healthy soccer players. © 2021, The Author(s).","ACL reconstruction; Fatigue; High-intensity exercise; Landing biomechanics; Soccer","lactic acid; adult; ankle dorsiflexion; anterior cruciate ligament reconstruction; Article; biomechanics; body mass; controlled study; electromyography; exercise intensity; female; gastrocnemius muscle; gluteus maximus muscle; hamstring muscle; high intensity exercise; human; human experiment; joint function; kinematics; knee function; lactate blood level; male; muscle contraction; operation duration; quadriceps femoris muscle; quasi experimental study; soccer player","Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, J Sports Sci, 21, 7, pp. 519-528, (2003); Robineau J., Jouaux T., Lacroix M., Babault N., Neuromuscular fatigue induced by a 90-minute soccer game modeling, J Strength Cond Res, 26, 2, pp. 555-562, (2012); Magalhaes J., Rebelo A., Oliveira E., Silva J.R., Marques F., Ascensao A., Impact of Loughborough intermittent shuttle test versus soccer match on physiological, biochemical and neuromuscular parameters, Eur J Appl Physiol, 108, 1, pp. 39-48, (2010); Krustrup P., Zebis M., Jensen J.M., Mohr M., Game-induced fatigue patterns in elite female soccer, J Strength Cond Res, 24, 2, pp. 437-441, (2010); Borotikar B.S., Newcomer R., Koppes R., McLean S.G., Combined effects of fatigue and decision making on female lower limb landing postures: central and peripheral contributions to ACL injury risk, Clin Biomech (Bristol, Avon), 23, 1, pp. 81-92, (2008); Benjaminse A., Habu A., Sell T.C., Abt J.P., Fu F.H., Myers J.B., Lephart S.M., Fatigue alters lower extremity kinematics during a single-leg stop-jump task, Knee Surg Sports Traumatol Arthrosc, 16, 4, pp. 400-407, (2008); Ageberg E., Consequences of a ligament injury on neuromuscular function and relevance to rehabilitation - using the anterior cruciate ligament-injured knee as model, J Electromyogr Kinesiol, 12, 3, pp. 205-212, (2002); Ristanis S., Stergiou N., Patras K., Tsepis E., Moraiti C., Georgoulis A.D., Follow-up evaluation 2 years after ACL reconstruction with bone-patellar tendon-bone graft shows that excessive tibial rotation persists, Clin J Sport Med, 16, 2, pp. 111-116, (2006); Webster K.E., Santamaria L.J., McClelland J.A., Feller J.A., Effect of fatigue on landing biomechanics after anterior cruciate ligament reconstruction surgery, Med Sci Sports Exerc, 44, 5, pp. 910-916, (2012); Dalton E.C., Pfile K.R., Weniger G.R., Ingersoll C.D., Herman D., Hart J.M., Neuromuscular changes after aerobic exercise in people with anterior cruciate ligament-reconstructed knees, J Athl Train, 46, 5, pp. 476-483, (2011); DeMorat G., Weinhold P., Blackburn T., Chudik S., Garrett W., Aggressive quadriceps loading can induce noncontact anterior cruciate ligament injury, Am J Sports Med, 32, 2, pp. 477-483, (2004); Koga H., Bahr R., Myklebust G., Engebretsen L., Grund T., Krosshaug T., Estimating anterior tibial translation from model-based image-matching of a noncontact anterior cruciate ligament injury in professional football: a case report, Clin J Sport Med, 21, 3, pp. 271-274, (2011); Meyer E.G., Haut R.C., Anterior cruciate ligament injury induced by internal tibial torsion or tibiofemoral compression, J Biomech, 41, 16, pp. 3377-3383, (2008); Speer K.P., Spritzer C.E., Bassett F.H., Feagin J.A., Garrett W.E., Osseous injury associated with acute tears of the anterior cruciate ligament, Am J Sports Med, 20, 4, pp. 382-389, (1992); Weinhandl J.T., Earl-Boehm J.E., Ebersole K.T., Huddleston W.E., Armstrong B.S., O'Connor K.M., Reduced hamstring strength increases anterior cruciate ligament loading during anticipated sidestep cutting, Clin Biomech (Bristol, Avon), 29, 7, pp. 752-759, (2014); Alentorn-Geli E., Myer G.D., Silvers H.J., Samitier G., Romero D., Lazaro-Haro C., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: mechanisms of injury and underlying risk factors, Knee Surg Sports Traumatol Arthrosc, 17, 7, pp. 705-729, (2009); Pollard C.D., Sigward S.M., Powers C.M., Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments, Clin Biomech (Bristol, Avon), 25, 2, pp. 142-146, (2010); Leppanen M., Pasanen K., Krosshaug T., Kannus P., Vasankari T., Kujala U.M., Et al., Sagittal plane hip, knee, and ankle biomechanics and the risk of anterior cruciate ligament injury: a prospective study, Orthop J Sports Med, 5, 12, (2017); Alanazi A., Mitchell K., Roddey T., Alenazi A., Alzhrani M., Ortiz A., Landing evaluation in soccer players with or without anterior cruciate ligament reconstruction, Int J Sports Med, 41, 13, pp. 962-971, (2020); Yu B., Lin C.F., Garrett W.E., Lower extremity biomechanics during the landing of a stop-jump task, Clin Biomech (Bristol, Avon), 21, 3, pp. 297-305, (2006); Chappell J.D., Creighton R.A., Giuliani C., Yu B., Garrett W.E., Kinematics and electromyography of landing preparation in vertical stop-jump: risks for noncontact anterior cruciate ligament injury, Am J Sports Med, 35, 2, pp. 235-241, (2007); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin Biomech (Bristol, Avon), 16, 5, pp. 438-445, (2001); Criswell E., Cram's introduction to surface electromyography, (2011); Kindermann W., Simon G., Keul J., The significance of the aerobic-anaerobic transition for the determination of work load intensities during endurance training, Eur J Appl Physiol Occup Physiol, 42, 1, pp. 25-34, (1979); Kulandaivelan S., Verma S.K., Mukhopadhyay S., Vignesh N., Test retest reproducibility of a hand-held lactate analyzer in healthy men, J Exerc Sci Physiothera, 5, 1, pp. 30-33, (2009); Hart S., Drevets K., Alford M., Salacinski A., Hunt B.E., A method-comparison study regarding the validity and reliability of the lactate plus analyzer, BMJ Open, 3, 2, (2013); Leard J.S., Cirillo M.A., Katsnelson E., Kimiatek D.A., Miller T.W., Trebincevic K., Garbalosa J.C., Validity of two alternative systems for measuring vertical jump height, J Strength Cond Res, 21, 4, pp. 1296-1299, (2007); Moir G., Shastri P., Connaboy C., Intersession reliability of vertical jump height in women and men, J Strength Cond Res, 22, 6, pp. 1779-1784, (2008); Daniel D.M., Malcom L.L., Losse G., Stone M.L., Sachs R., Burks R., Instrumented measurement of anterior laxity of the knee, J Bone Joint Surg Am, 67, 5, pp. 720-726, (1985); Wroble R.R., Van Ginkel L.A., Grood E.S., Noyes F.R., Shaffer B.L., Repeatability of the KT-1000 arthrometer in a normal population, Am J Sports Med, 18, 4, pp. 396-399, (1990); Hanten W.P., Pace M.B., Reliability of measuring anterior laxity of the knee joint using a knee ligament arthrometer, Phys Ther, 67, 3, pp. 357-359, (1987); Bach B.R., Warren R.F., Flynn W.M., Kroll M., Wickiewiecz T.L., Arthrometric evaluation of knees that have a torn anterior cruciate ligament, J Bone Joint Surg Am, 72, 9, pp. 1299-1306, (1990); Ortiz A., Olson S.L., Roddey T.S., Morales J., Reliability of selected physical performance tests in young adult women, J Strength Cond Res., 19, 1, pp. 39-44, (2005); Inbar O., Bar-Or O., Skinner J.S., The Wingate Anaerobic Test. Champaign, (1996); Rodacki A.L., Fowler N.E., Bennett S.J., Vertical jump coordination: fatigue effects, Med Sci Sports Exerc, 34, 1, pp. 105-116, (2002); Besier T.F., Lloyd D.G., Ackland T.R., Muscle activation strategies at the knee during running and cutting maneuvers, Med Sci Sports Exerc, 35, 1, pp. 119-127, (2003); Croce R.V., Russell P.J., Swartz E.E., Decoster L.C., Knee muscular response strategies differ by developmental level but not gender during jump landing, Electromyogr Clin Neurophysiol, 44, 6, pp. 339-348, (2004); Field AP. Discovering Statistics Using IBM SPSS Statistics, (2018); Coventry E., O'Connor K.M., Hart B.A., Earl J.E., Ebersole K.T., The effect of lower extremity fatigue on shock attenuation during single-leg landing, Clin Biomech (Bristol, Avon), 21, 10, pp. 1090-1097, (2006); Madigan M.L., Pidcoe P.E., Changes in landing biomechanics during a fatiguing landing activity, J Electromyogr Kinesiol, 13, 5, pp. 491-498, (2003); Augustsson J., Thomee R., Linden C., Folkesson M., Tranberg R., Karlsson J., Single-leg hop testing following fatiguing exercise: reliability and biomechanical analysis, Scand J Med Sci Sports, 16, 2, pp. 111-120, (2006); Decker M.J., Torry M.R., Wyland D.J., Sterett W.I., Richard S.J., Gender differences in lower extremity kinematics, kinetics and energy absorption during landing, Clin Biomech (Bristol, Avon), 18, 7, pp. 662-669, (2003); Myer G.D., Ford K.R., Brent J.L., Hewett T.E., The effects of plyometric vs. dynamic stabilization and balance training on power, balance, and landing force in female athletes, J Strength Cond Res, 20, 2, pp. 345-353, (2006); Walsh M., Boling M.C., McGrath M., Blackburn J.T., Padua D.A., Lower extremity muscle activation and knee flexion during a jump-landing task, J Athl Train, 47, 4, pp. 406-413, (2012); Levangie P.K., Norkin C.C., Levangie P.K., Joint structure and function: a comprehensive analysis, (2011)","A.D. Alanazi; Department of Physical Therapy, College of Applied Medical Sciences, Majmaah University, Al-Majmaah, 11952, Saudi Arabia; email: aalanazi@mu.edu.sa","","BioMed Central Ltd","20521847","","","","English","BMC Sports Sci. Med. Rehabil.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85104003383" "Kellis E.; Galanis N.; Chrysanthou C.; Kofotolis N.","Kellis, Eleftherios (6603815400); Galanis, Nikiforos (35332008800); Chrysanthou, Chrysanthos (57214486481); Kofotolis, Nikolaos (15923211000)","6603815400; 35332008800; 57214486481; 15923211000","Use of ultrasound to monitor biceps femoris mechanical adaptations after injury in a professional soccer player","2016","Journal of Sports Science and Medicine","15","1","","75","79","4","3","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959016887&partnerID=40&md5=7abee9cbaa314d209473274e21ca5e26","Laboratory of Neuromechanics, Department of Physical Education and Sport Sciences, Serres, Greece; Division of Sports Medicine, Department of Orthopaedics, Papageorgiou General Hospital, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece; European Interbalkan Medical Center, Thessaloniki, Greece","Kellis E., Laboratory of Neuromechanics, Department of Physical Education and Sport Sciences, Serres, Greece; Galanis N., Division of Sports Medicine, Department of Orthopaedics, Papageorgiou General Hospital, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece; Chrysanthou C., European Interbalkan Medical Center, Thessaloniki, Greece; Kofotolis N., Laboratory of Neuromechanics, Department of Physical Education and Sport Sciences, Serres, Greece","This study examined the use of ultrasound to monitor changes in the long head of the biceps femoris (BF) architecture of aprofes-sional soccer player with acute first-time hamstring strain. The player followed a 14 session physiotherapy treatment until return to sport. The pennation angle and aponeurosis strain of the long head of the biceps femoris (BF) were monitored at 6 occasions (up until 1 year) after injury. The size of the scar / hematoma was reduced by 63.56% (length) and 67.9% (width) after the intervention and it was almost non-traceable one year after injury. The pennation angle of the fascicles underneath the scar showed a decline of 51.4% at the end of the intervention while an increase of 109.2% of the fascicles which were closer to deep aponeurosis was observed. In contrast, pennation angle of fascicles located away from the injury site were relatively unaffected. The treatment intervention resulted in a 57.9% to 77.3% decline of maximum strain per unit of MVC moment and remained similar one year after the intervention. This study provided an example of the potential use of ultrasound-based parameters to link the mechanical adaptations of the injured muscle to specific therapeutic intervention. © Journal of Sports Science and Medicine.","Biomechanics/lower extremity; EMG; Muscle physiology / performance; Therapeutic exercise; Tissue mechanics; Ultrasound imaging","","Albracht K., Arampatzis A., Exercise-induced changes in triceps surae tendon stiffness and muscle strength affect running economy in humans, European Journal of Applied Physiology, 113, pp. 1605-1615, (2013); Askling C.M., Tengvar M., Saartok T., Thorstensson A., Acute first-time hamstring strains during high-speed running: A longitudinal study including clinical and magnetic resonance imaging findings, American Journal of Sports Medicine, 35, pp. 197-206, (2007); Biewener A.A., Roberts T.J., Muscle and tendon contributions to force, work, and elastic energy savings: A comparative perspective, Exercise and Sport Science Reviews, 28, pp. 99-107, (2000); De Smet A.A., Best T.M., MR imaging of the distribution and location of acute hamstring injuries in athletes, American Journal of Roentgenol Ogy, 174, pp. 393-399, (2000); Farup J., Kjolhede T., Sorensen H., Dalgas U., Moller A.B., Vestergaard P.F., Ringgaard S., Bojsen-Moller J., Vissing K., Muscle morphological and strength adaptations to endurance vs. Resistance training, Journal of Strength and Conditioning Research, 26, pp. 398-407, (2012); Fletcher J.R., Esau S.P., Macintosh B.R., Changes in tendon stiffness and running economy in highly trained distance runners, European Journal of Applied Physiology, 110, pp. 1037-1046, (2010); Heiderscheit B.C., Sherry M.A., Silder A., Chumanov E.S., Thelen D.G., Hamstring strain injuries: Recommendations for diagnosis, rehabilitation, and injury prevention, Journal of Orthopaedics and Sports Physical Therapy, 40, pp. 67-81, (2010); Huijing P.A., Muscular force transmission necessitates a multilevel integrative approach to the analysis of function of skeletal muscle, Exercise and Sport Science Reviews, 31, pp. 167-175, (2003); Kellis E., Galanis N., Natsis K., Kapetanos G., Validity of architectural properties of the hamstring muscles: Correlation of ultrasound findings with cadaveric dissection, Journal of Biomechechanics, 42, pp. 2549-2554, (2009); Klinge K., Magnusson S.P., Simonsen E.B., Aagaard P., Klausen K., Kjaer M., The effect of strength and flexibility training on skeletal muscle electromyographic activity, stiffness, and viscoelastic stress relaxation response, American Journal of Sports Medicine, 25, pp. 710-716, (1997); Koulouris G., Connell D., Evaluation of the hamstring muscle complex following acute injury, Skeletal Radiology, 32, pp. 582-589, (2003); Lieber R.L., Friden J., Functional and clinical significance of skeletal muscle architecture, Muscle and Nerve, 23, pp. 1647-1666, (2000); Magnusson S.P., Narici M.V., Maganaris C.N., Kjaer M., Human tendon behaviour and adaptation, in vivo, Journal of Physiology, 586, pp. 71-81, (2008); Malliaropoulos N., Papacostas E., Kiritsi O., Papalada A., Gougoulias N., Maffulli N., Posterior thigh muscle injuries in elite track and field athletes, American Journal of Sports Medicine, 38, pp. 1813-1819, (2010); Mueller-Wohlfahrt H.W., Haensel L., Mithoefer K., Ekstrand J., English B., McNally S., Orchard J., Van Dijk C.N., Kerkhoffs G.M., Schamasch P., Blottner D., Swaerd L., Goedhart E., Ueblacker P., Terminology and classification of muscle injuries in sport: The Munich consensus statement, British Journal of Sports Medicine, 47, pp. 342-350, (2013); Opar D.A., Williams M.D., Shield A.J., Hamstring strain injuries: Factors that lead to injury and re-injury, Sports Medicine, 42, pp. 209-226, (2012); Potier T.G., Alexander C.M., Seynnes O.R., Effects of eccentric strength training on biceps femoris muscle architecture and knee joint range of movement, European Journal of Applied Physiology, 105, pp. 939-944, (2009); Purslow P.P., The structure and functional significance of variations in the connective tissue within muscle, Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 133, pp. 947-966, (2002); Silder A., Heiderscheit B.C., Thelen D.G., Enright T., Tuite M.J., MR observations of long-term musculotendon remodeling following a hamstring strain injury, Skeletal Radiology, 37, pp. 1101-1109, (2008); Silder A., Reeder S.B., Thelen D.G., The influence of prior hamstring injury on lengthening muscle tissue mechanics, Journal of Biomechanics, 43, pp. 2254-2260, (2010)","E. Kellis; TEFAA Serres, AgiosIoannis, Serres, 62110, Greece; email: ekellis@phed-sr.auth.gr","","Journal of Sport Science and Medicine","13032968","","","","English","J. Sports Sci. Med.","Article","Final","","Scopus","2-s2.0-84959016887" "Tamura A.; Shimura K.; Inoue Y.","Tamura, Akihiro (57190306586); Shimura, Keita (15221005600); Inoue, Yuri (57867434500)","57190306586; 15221005600; 57867434500","Biomechanical Characteristics of the Support Leg During Side-Foot Kicking in Soccer Players With Chronic Ankle Instability","2022","Orthopaedic Journal of Sports Medicine","10","7","","","","","2","10.1177/23259671221112966","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85137009009&doi=10.1177%2f23259671221112966&partnerID=40&md5=3cdb232e9e7c9411df8b0bb2cba99fcc","Department of Physical Therapy, School of Health Sciences at Narita, International University of Health and Welfare, Narita, Chiba, Japan; School of Health Sciences, Tokyo International University, Saitama, Kawagoe, Japan; Department of Rehabilitation, Nakabayashi Orthopaedic Clinic, Nada, Kobe, Hyogo, Japan","Tamura A., Department of Physical Therapy, School of Health Sciences at Narita, International University of Health and Welfare, Narita, Chiba, Japan; Shimura K., School of Health Sciences, Tokyo International University, Saitama, Kawagoe, Japan; Inoue Y., Department of Rehabilitation, Nakabayashi Orthopaedic Clinic, Nada, Kobe, Hyogo, Japan","Background: Chronic ankle instability (CAI) in soccer players can increase the risk of recurrent ankle varus sprains and damage the articular surface of the ankle joint, thus increasing the risk of osteoarthritis. It is important to understand the biomechanical characteristics of the support leg during kicking in soccer players with CAI. Purpose/Hypothesis: The purpose of this study was to clarify the kinematics of the kicking motion of soccer players with CAI. It was hypothesized that at the point before ball contact when the support leg makes flat-foot contact with the ground, soccer players with CAI will land with ankle inversion in the support leg during a side-foot kick compared with players without CAI. Study Design: Controlled laboratory study. Methods: The study cohort included 19 male college soccer players (mean age, 20.5 ± 0.9 years) with greater than 8 years of soccer experience who were recruited from August 2019 to March 2020. Of these athletes, 10 had CAI and 9 had no CAI in the support leg, as diagnosed according to the Cumberland Ankle Instability Tool. Kinematic data for the trunk, hip, knee, and foot of the support leg during a side-foot kick were obtained using a 3-dimensional, motion-analysis system. The Mann-Whitney U test or Student t test was selected to identify differences in variables between the CAI and non-CAI groups. Results: There were no significant differences in physical characteristics between the CAI and non-CAI groups. At the point when the support leg made flat-foot contact with the ground, the players with CAI had more eversion of the hindfoot with respect to the tibia (-28.3° ± 12.1° vs -13.9° ± 14.2°; P =.03), a more varus alignment of the knee (26.0° ± 10.7° vs 13.7° ± 10.5°; P =.03), and a lower arch height index (0.210 ± 0.161 vs 0.233 ± 0.214; P =.046) compared with non-CAI players. Conclusion: Significant differences between players with and without CAI were seen in the support leg kinematics at flat-foot contact with the ground during the kicking cycle. Clinical Relevance: The biomechanical alignment of the support leg during a side-foot kick in players with CAI may reflect a subconscious attempt to avoid inversion of the foot and further ankle sprains. © The Author(s) 2022.","ankle injury; biomechanics; joint instability","acceleration; acromion; adult; ankle brachial index; ankle instability; anterior cruciate ligament reconstruction; Article; biomechanics; body mass; clinical article; cohort analysis; controlled study; distal phalanx; electromyography; goniometry; ground reaction force; human; joint instability; kinematics; knee function; knee radiography; kyphosis; lower limb; male; muscle strength; questionnaire; range of motion; rank sum test; risk factor; soccer player; Student t test; tibial tuberosity; training; young adult","Augustus S., Mundy P., Smith N., Support leg action can contribute to maximal instep soccer kick performance: an intervention study, J Sports Sci, 35, 1, pp. 89-98, (2017); Baker R., Robb J., Foot models for clinical gait analysis, Gait Posture, 23, 4, pp. 399-400, (2006); 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Tropp H., Commentary: functional ankle instability revisited, J Athl Train, 37, 4, pp. 512-515, (2002); Walden M., Hagglund M., Ekstrand J., Time-trends and circumstances surrounding ankle injuries in men’s professional football: an 11-year follow-up of the UEFA Champions League injury study, Br J Sports Med, 47, 12, pp. 748-753, (2013); Woods C., Hawkins R., Hulse M., Et al., The Football Association Medical Research Programme: an audit of injuries in professional football: an analysis of ankle sprains, Br J Sports Med, 37, 3, pp. 233-238, (2003); Zhang X., Xia R., Dai B., Et al., Effects of exercise-induced fatigue on lower extremity joint mechanics, stiffness, and energy absorption during landings, J Sports Sci Med, 17, 4, pp. 640-649, (2018)","","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85137009009" "Thomas C.; Dos'santos T.; Warmenhoven J.; Jones P.A.","Thomas, Christopher (56754565800); Dos'santos, Thomas (57170712800); Warmenhoven, John (56958579900); Jones, Paul Anthony (55308526600)","56754565800; 57170712800; 56958579900; 55308526600","Between-Limb Differences During 180° Turns in Female Soccer Players: Application of Statistical Parametric Mapping","2022","Journal of Strength and Conditioning Research","36","11","","3136","3142","6","2","10.1519/JSC.0000000000004022","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85110824782&doi=10.1519%2fJSC.0000000000004022&partnerID=40&md5=3f9399433168fd4e3d9a9242af1ba4fd","Sport Exercise and Physiotherapy, University of Salford, GM, Salford, United Kingdom; Department of Sport and Exercise Sciences, Musculoskeletal Science and Sports Medicine Research Center, Manchester Metropolitan University, Manchester, United Kingdom; Australian Institute of Sport, Canberra, ACT, Australia; Exercise and Sport Science, Faculty of Health Sciences, University of Sydney, Sydney, NSW, Australia","Thomas C., Sport Exercise and Physiotherapy, University of Salford, GM, Salford, United Kingdom; Dos'santos T., Department of Sport and Exercise Sciences, Musculoskeletal Science and Sports Medicine Research Center, Manchester Metropolitan University, Manchester, United Kingdom; Warmenhoven J., Australian Institute of Sport, Canberra, ACT, Australia, Exercise and Sport Science, Faculty of Health Sciences, University of Sydney, Sydney, NSW, Australia; Jones P.A., Sport Exercise and Physiotherapy, University of Salford, GM, Salford, United Kingdom","Thomas, C, Dos'Santos, T, Warmenhoven, J, and Jones, PA. Between-limb differences during 180° turns in female soccer players: Application of statistical parametric mapping. J Strength Cond Res 36(11): 3136-3142, 2022 - This study was exploratory in nature and investigated the ability of statistical parametric mapping (SPM) to assess between-limb differences in lower-extremity movement change of direction. Fourteen female soccer players (mean ± SD; age = 20.6 ± 0.6 years; height = 1.65 ± 0.07 m; and body mass = 56.04 ± 6.20 kg). For comparisons between preferred and nonpreferred limbs, vertical (Fz) and horizontal (Fx) ground reaction force were determined along with hip, knee, and ankle angles and moments in the sagittal plane during weight acceptance during the final contact. In addition, frontal plane knee abduction angles and moments were calculated during the final contact. Statistical parametric mapping software was then used to assess for differences between the entire weight acceptance phase of preferred and nonpreferred limbs. There were no differences between limbs in all variables using SPM. These results demonstrate that female soccer players exhibit little side-to-side differences in certain lower-limb biomechanics when performing a turn maneuver. These findings can be utilized by practitioners and clinicians when developing injury prevention and rehabilitation programs. © 2022 NSCA National Strength and Conditioning Association. All rights reserved.","change of direction ability; deceleration; knee abduction moment; side-to-side differences","Adult; Biomechanical Phenomena; Female; Humans; Knee Joint; Lower Extremity; Movement; Soccer; Young Adult; adult; biomechanics; female; human; injury; knee; lower limb; movement (physiology); soccer; young adult","Ball K.A., Kinematic comparison of the preferred and non-preferred foot punt kick, J Sports Sci, 29, pp. 1545-1552, (2011); Bell A.L., Brand R.A., Pedersen D.R., Prediction of hip joint centre location from external landmarks, Hum Mov Sci, 8, pp. 3-16, (1989); Bencke J., Curtis D., Krogshede C., Et al., Biomechanical evaluation of the side-cutting manoeuvre associated with ACL injury in young female handball players, Knee Surg Sports Traumatol Arthrosc, 21, pp. 1876-1881, (2013); Besier T.F., Lloyd D.G., Ackland T.R., Cochrane J.L., Anticipatory effects on knee joint loading during running and cutting maneuvers, Med Sci Sports Exerc, 33, pp. 1176-1181, (2001); Brophy R., Silvers H.J., Gonzales T., Mandelbaum B.R., Gender influences: The role of leg dominance in ACL injury among soccer players, Br J Sports Med, 44, pp. 694-697, (2010); Brown S., Wang H., Dickin D.C., Weiss K.J., The relationship between leg preference and knee mechanics during sidestepping in collegiate female footballers, Sports Biomech, 13, pp. 351-361, (2014); Brown S.R., Brughelli M., Griffiths P.C., Cronin J.B., Lower-extremity isokinetic strength profiling in professional rugby league and rugby union, Int J Sports Physiol Perform, 9, pp. 358-361, (2014); Brown S.R., Hume P.A., Lorimer A.V., Brughelli M., Besier T.F., An individualised approach to assess the sidestep manoeuvre in male rugby union athletes, J Sci Med Sport, 23, pp. 1086-1092, (2020); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Changing sidestep cutting technique reduces knee valgus loading, Am J Sports Med, 37, pp. 2194-2200, (2009); Dempsey A.R., Lloyd D.G., Elliott B.C., Et al., The effect of technique change on knee loads during sidestep cutting, Med Sci Sports Exerc, 39, pp. 1765-1773, (2007); Dempster W.T., Space Requirements of the Seated Operator: Geometrical, Kinematic, and Mechanical Aspects of the Body, with Special Reference to the Limbs, (1955); Dos'Santos T., Bishop C., Thomas C., Comfort P., Jones P.A., The effect of limb dominance on change of direction biomechanics: A systematic review of its importance for injury risk, Phys Ther Sport, 37, pp. 179-189, (2019); Dos'Santos T., Thomas C., Comfort P., Jones P.A., Comparison of change of direction speed performance and asymmetries between team-sport athletes: Application of change of direction deficit, Sports, 6, (2018); Greig M., The influence of soccer-specific activity on the kinematics of an agility sprint, Eur J Sport Sci, 9, pp. 23-33, (2009); Greska E.K., Cortes N., Ringleb S.I., Onate J.A., Van Lunen B.L., Biomechanical differences related to leg dominance were not found during a cutting task, Scand J Med Sci Sports, 27, pp. 1328-1336, (2016); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, J Biomech Eng, 105, pp. 136-144, (1983); Hart N.H., Nimphius S., Spiteri T., Newton R.U., Leg strength and lean mass symmetry influences kicking performance in Australian Football, J Sports Sci Med, 13, pp. 157-165, (2014); Havens K.L., Sigward S.M., Whole body mechanics differ among running and cutting maneuvers in skilled athletes, Gait Posture, 42, pp. 240-245, (2015); Hughes-Oliver C.N., Harrison K.A., Williams D.B., Queen R.M., Statistical parametric mapping as a measure of differences between limbs: Applications to clinical populations, J Appl Biomech, 35, pp. 377-387, (2019); Jones P.A., Herrington L., Graham-Smith P., Braking characteristics during cutting and pivoting in female soccer players, J Electromyogr Kinesiol, 30, pp. 46-54, (2016); Jones P.A., Herrington L.C., Graham-Smith P., Technique determinants of knee joint loads during cutting in female soccer players, Hum Mov Sci, 42, pp. 203-211, (2015); King E., Richter C., Franklyn-Miller A., Et al., Biomechanical but not timed performance asymmetries persist between limbs 9 months after ACL reconstruction during planned and unplanned change of direction, J Biomech, 81, pp. 93-103, (2018); King E., Richter C., Franklyn-Miller A., Et al., Whole-body biomechanical differences between limbs exist 9 months after ACL reconstruction across jump/landing tasks, Scand J Med Sci Sports, 28, pp. 2567-2578, (2018); Kristianslund E., Faul O., Bahr R., Myklebust G., Krosshaug T., Sidestep cutting technique and knee abduction loading: Implications for ACL prevention exercises, Br J Sports Med, 48, pp. 779-783, (2014); Krosshaug T., Nakamae A., Boden B.P., Et al., Mechanisms of anterior cruciate ligament injury in basketball: Video analysis of 39 cases, Am J Sports Med, 35, pp. 359-367, (2007); Maloney S.J., The relationship between asymmetry and athletic performance: A critical review, J Strength Cond Res, 33, pp. 2579-2593, (2019); Marshall B., Franklyn-Miller A., Moran K., Et al., Biomechanical symmetry in elite rugby union players during dynamic tasks: An investigation using discrete and continuous data analysis techniques, Bmc Sports Sci Med Rehabil, 7, (2015); Mok K.-M., Bahr R., Krosshaug T., Reliability of lower limb biomechanics in two sport-specific sidestep cutting tasks, Sports Biomech, 17, pp. 157-167, (2018); Newton R.U., Gerber A., Nimphius S., Et al., Determination of functional strength imbalance of the lower extremities, J Strength Cond Res, 20, pp. 971-977, (2006); Pataky T.C., One-dimensional statistical parametric mapping in Python, Comput Methods Biomech Biomed Eng, 15, pp. 295-301, (2012); Pataky T.C., Robinson M.A., Vanrenterghem J., Vector field statistical analysis of kinematic and force trajectories, J Biomech, 46, pp. 2394-2401, (2013); Pollard C.D., Norcross M.F., Johnson S.T., Et al., A biomechanical comparison of dominant and non-dominant limbs during a side-step cutting task, Sports Biomech, 19, pp. 271-279, (2020); Robinson M.A., Donnelly C.J., Tsao J., Vanrenterghem J., Impact of knee modeling approach on indicators and classification of anterior cruciate ligament injury risk, Med Sci Sports Exerc, 46, pp. 1269-1276, (2014); Sankey S.P., Raja Azidin R.M., Robinson M.A., Et al., How reliable are knee kinematics and kinetics during side-cutting manoeuvres?, Gait Posture, 41, pp. 905-911, (2015); Schlumberger A., Laube W., Bruhn S., Et al., Muscle imbalances-fact or fiction?, Isokinet Exerc Sci, 14, pp. 3-11, (2006); Vanrenterghem J., Venables E., Pataky T., Robinson M.A., The effect of running speed on knee mechanical loading in females during side cutting, J Biomech, 45, pp. 2444-2449, (2012); Winter D.A., Biomechanics and Motor Control of Human Movement, (2009)","C. Thomas; Sport Exercise and Physiotherapy, University of Salford, Salford, GM, United Kingdom; email: c.thomas2@edu.salford.ac.uk","","NSCA National Strength and Conditioning Association","10648011","","","33795602","English","J. Strength Cond. Res.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85110824782" "Snodgrass S.J.; Ryan K.E.; Miller A.; James D.; Callister R.","Snodgrass, Suzanne J. (56903901600); Ryan, Kathleen E. (57198041722); Miller, Andrew (14047281300); James, Daphne (54418739800); Callister, Robin (8519687500)","56903901600; 57198041722; 14047281300; 54418739800; 8519687500","Relationship between posture and non-contact lower limb injury in young male amateur football players: A prospective cohort study","2021","International Journal of Environmental Research and Public Health","18","12","6424","","","","4","10.3390/ijerph18126424","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107723491&doi=10.3390%2fijerph18126424&partnerID=40&md5=18ce89c3bb56818b3f6150a98984e79d","School of Health Sciences, The University of Newcastle, Callaghan, 2308, NSW, Australia; Priority Research Centre for Physical Activity and Nutrition, The University of Newcastle, Callaghan, 2308, NSW, Australia; School of Education, The University of Newcastle, Callaghan, 2308, NSW, Australia; School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, 2308, NSW, Australia","Snodgrass S.J., School of Health Sciences, The University of Newcastle, Callaghan, 2308, NSW, Australia, Priority Research Centre for Physical Activity and Nutrition, The University of Newcastle, Callaghan, 2308, NSW, Australia; Ryan K.E., School of Health Sciences, The University of Newcastle, Callaghan, 2308, NSW, Australia, Priority Research Centre for Physical Activity and Nutrition, The University of Newcastle, Callaghan, 2308, NSW, Australia; Miller A., School of Education, The University of Newcastle, Callaghan, 2308, NSW, Australia; James D., School of Health Sciences, The University of Newcastle, Callaghan, 2308, NSW, Australia; Callister R., Priority Research Centre for Physical Activity and Nutrition, The University of Newcastle, Callaghan, 2308, NSW, Australia, School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, 2308, NSW, Australia","Posture, a potentially modifiable injury risk factor, is considered important in injury screening/prevention in athletes, yet few studies investigate relationships between posture and injury. This prospective cohort study investigated whether static posture is associated with lower limb injury risk in male football players (n = 263). Nine aspects of static standing posture (left and right rearfoot, knee interspace, lateral knee, lumbar lordosis, thoracic kyphosis, scoliosis S and C, forward head) were assessed from photographs during the pre-season using the modified Watson and Mac Donncha scale, which was dichotomised for analysis (deviated or normal). Player characteristics (age, height, mass, body mass index, competition level), match/training exposure, and previous and in-season non-contact lower limb injuries were recorded. Binary logistic regression investigated relationships between posture and injury (previous and in-season). Eighty previous and 24 in-season lower limb injuries were recorded. Previous injury was not associated with any postural variable. In-season injury was associated with previous injury (OR = 3.04, 95% CI 1.20–7.68, p = 0.02) and having a normal thoracic curve compared to kyphosis (OR = 0.38, 95% CI 0.15–1.00, p = 0.05) but no other postural variables. Static postural deviations observed in male football players in the pre-season are not typically associated with non-contact lower limb injury risk; thus, they are unlikely to add value to pre-season screening programs. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).","Postures; Soccer; Sports injury","Athletic Injuries; Football; Humans; Incidence; Knee; Male; Posture; Prospective Studies; Soccer; cohort analysis; injury; physical activity; posture; risk assessment; risk factor; sport; young population; adolescent; adult; ankle; ankle sprain; Article; biomechanics; cohort analysis; concussion; data analysis; female; hip; human; human experiment; human tissue; knee injury; major clinical study; male; shoulder injury; body position; football; incidence; knee; prospective study; soccer; sport injury","Sadigursky D., Braid J.A., De Lira D.N., Machado B.A., Carneiro R.J., Colavolpe P.O., The FIFA 11+ injury prevention program for soccer players: A systematic review, BMC Sports Sci. Med. 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Fitness, 35, pp. 289-294, (1995); Bugg W.G., Lewis M., Juette A., Cahir J.G., Toms A.P., Lumbar lordosis and pars interarticularis fractures: A case-control study, Skeletal Radiol, 41, pp. 817-822, (2012); Sorensen C.J., Norton B.J., Callaghan J.P., Hwang C.T., Van Dillen L.R., Is lumbar lordosis related to low back pain development during prolonged standing?, Man. Ther, 20, pp. 553-557, (2015); Nielsen R.O., Buist I., Parner E.T., Nohr E.A., Sorensen H., Lind M., Rasmussen S., Foot pronation is not associated with increased injury risk in novice runner wearing a neutral shoe: A 1-year prospective cohort study, Br. J. Sports Med, 48, pp. 440-447, (2014); Ramskov D., Jensen M.L., Obling K., Nielsen R.O., Parner E.T., Rasmussen S., No association between q-angle and foot posture with running-related injuries: A 10 week prospective follow-up study, Int. J. Sports Phys. 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Ther, 13, pp. 205-209, (2009); Van Blommestein A.S., MaCrae S., Lewis J.S., Morrissey M.C., Reliability of measuring thoracic kyphosis angle, lumbar lordosis angle and straight leg raise with an inclinometer, Spine J, 4, pp. 10-15, (2012); D'Amico M., Kinel E., Roncoletta P., Normative 3D opto-electronic stereo-photogrammetric posture and spine morphology data in young healthy adult population, PLoS ONE, 12, (2017); Koo T.K., Kwok W.E., A non-ionizing technique for three-dimensional measurement of the lumbar spine, J. Biomech, 49, pp. 4073-4079, (2016); Trimble M.H., Bishop M.D., Buckley B.D., Fields L.C., Rozea G.D., The relationship between clinical measurements of lower extremity posture and tibial translation, Clin. Biomech, 17, pp. 286-290, (2002); Marfell-Jones M., International Standards for Anthropometric Assessment, (2006); Neter J., Kutner M.H., Nachtsheim C.J., Wasserman W., Applied Linear Regression Models, (1996); Lotfian S., Moghadam N., Hassnamirzaie B., Soltani S.K., Are lower extremity injuries related to spinal form abnormalities in professional football players? A prospective cohort study, Asian J. Sports Med, 8, (2017); de Loes M., Exposure data. Why are they needed?, Sports Med. (Auckland NZ), 24, pp. 172-175, (1997); Rahnama N., Reilly T., Lees A., Injury risk associated with playing actions during competitive soccer, Br. J. Sports Med, 36, pp. 354-359, (2002); Harrison D.E., Cailliet R., Harrison D.D., Janik T.J., Holland B., Reliability of Centroid, Cobb, and Harrison posterior tangent methods: Which to choose for analysis of thoracic kyphosis, Spine, 26, pp. e227-e234, (2001); Fortin C., Van Schaik P., Aubin-Fournier J.F., Bettany-Saltikov J., Bernard J.C., Feldman D.E., The acceptance of the clinical photographic posture assessment tool (CPPAT), BMC Musculoskelet Disord, 19, pp. 1-9, (2018)","S.J. Snodgrass; School of Health Sciences, The University of Newcastle, Callaghan, 2308, Australia; email: Suzanne.Snodgrass@newcastle.edu.au","","MDPI","16617827","","","34198516","English","Int. J. Environ. Res. Public Health","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85107723491" "Ismail A.R.; Mansor M.R.A.; Ali M.F.M.; Jaafar S.; Johar M.S.N.M.","Ismail, A.R. (24502854700); Mansor, M.R.A. (57202263764); Ali, M.F.M. (23109979400); Jaafar, S. (57195320455); Johar, M.S.N.M. (55939184600)","24502854700; 57202263764; 23109979400; 57195320455; 55939184600","Biomechanics analysis for right leg instep kick","2010","Journal of Applied Sciences","10","13","","1286","1292","6","4","10.3923/jas.2010.1286.1292","https://www.scopus.com/inward/record.uri?eid=2-s2.0-77953739899&doi=10.3923%2fjas.2010.1286.1292&partnerID=40&md5=2af7049cfac6b078e3c55d33c3e20d44","Faculty of Mechanical Engineering, Universiti Malaysia Pahang, 22600 Pekan, Pahang, Malaysia; Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Selangor, 43600 UKM Bangi, Malaysia; Biomechanics Center, National Sports Institute of Malaysia, National Sports Complex, 57000 Kuala Lumpur, Bukit Jalil, Seri Petaling, Malaysia","Ismail A.R., Faculty of Mechanical Engineering, Universiti Malaysia Pahang, 22600 Pekan, Pahang, Malaysia; Mansor M.R.A., Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Selangor, 43600 UKM Bangi, Malaysia; Ali M.F.M., Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Selangor, 43600 UKM Bangi, Malaysia; Jaafar S., Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Selangor, 43600 UKM Bangi, Malaysia; Johar M.S.N.M., Biomechanics Center, National Sports Institute of Malaysia, National Sports Complex, 57000 Kuala Lumpur, Bukit Jalil, Seri Petaling, Malaysia","High quality kicking technique is the most important aspect of the soccer player. The good kicking technique will increase quality of the games. The study will focus on the biomechanics analysis of the national soccer players as well as identifying to their kicking action and technique using the instep kicking. The subject making the instep kicking by using the right leg. Data management and analysis were performed using Silicon Pro Coach and the statistical analysis carried out by using Minitab software. Image of instep kicking was captured during the study to obtain a visual of the kicking activity so that it can be analyzed. From that, the data for velocity, acceleration, angle of ankle and distance involved in kicking activity can be identified. Furthermore, the equation that relates with the variables were obtained through the ANOVA and regression model for each variable. Based on the findings, the velocity and distance was identified as significant to the force model. This study has shown that the highest average forces produced in force model analysis which using three step run. The highest average force is 5879.60 N, the highest average velocity is 8.2 m sec-1 ec with distance kick as much as 47.85 m and the multi linear model equation is y = - 18.1+711x1+0.146 x2+396x3. © 2010 Asian Network for Scientific Information.","Angle; Distance; Force; In-step; Kick; Velocity","Biomechanics; Information management; Regression analysis; Sports; Angle; Average velocity; Distance; Force; Kick; Linear model equations; Regression model; Soccer player; Velocity","Anderson D., Sidaway B., Coordination changes associated with practice of a soccer kick, Res. Q. Exerc. Sport, 65, pp. 93-99, (1994); Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, J. Sports Sci, 24, pp. 951-960, (2006); Asami T., Nolte V., Analysis of Powerful Ball Kicking, Biomechanics VIII-B, pp. 695-700, (1983); Elliott B., Biomechanics of Sport, Better Coaching: Advanced Coaches Manual, pp. 171-180, (2001); Farber E., A Guide to Mmitab/Book and Disk, (1995); Isokawa M., Lees A., A Biomechanical Analysis of the Instep Kick Motion in Soccer, Science and Football, pp. 449-455, (1988); Kellis E., Gissis A., Katis A., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Med. Sci. Sports Exerc, 36, pp. 1017-1028, (2004); Kellis E., Katis A., Vrabas I.S., Effects of an intermittent exercise fatigue protocol on biomechanics of soccer kick performance, Scand. J. Med. Sci. Sports, 16, pp. 334-344, (2006); Lees A., Biomechanics Applied to Soccer Skills, Science and Soccer, pp. 123-133, (1996); Lees A., Nolan L., The biomechanics of soccer: A review, J. Sport. Sci, 16, pp. 211-234, (1998); Lees A., Biomechanics Applied to Soccer Skills, Science and Soccer, pp. 123-134, (2002); Luhtanen P., Kinematics and Kinetics of Maximal Instep Kicking in Junior Soccer Players, Science and Football, pp. 441-448, (1988); Morrison J., Siliconcoach, (1997); Neilson P.J., Jones R., Dynamic Soccer Ball Performance Measurement, Science and Football, 1, pp. 21-27, (2005); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, J. Sports Sci, 24, pp. 11-22, (2006); Opavsky P., An Investigation of Linear and Angular Kinematics of the Leg During two Types of Soccer Kick, Science and Football, pp. 456-459, (1988); Plagenhoef S., Patterns of Human Motion, MC Graw-Hill, Englewood Cliffs, NJ., (1971)","","","Asian Network for Scientific Information","18125654","","","","English","J. Appl. Sci.","Article","Final","","Scopus","2-s2.0-77953739899" "Schneider K.","Schneider, K. (57198322435)","57198322435","The risk of brain-injuries in soccer-header; [DAS RISIKO EINER HIRNVERLETZUNG BEIM FUSSBALL-KOPFSTOSS]","1984","Unfallheilkunde/Traumatology","87","1","","40","42","2","4","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0021336985&partnerID=40&md5=54bdc420a01f31078c25d35319932f17","Germany","Schneider K., Germany","[No abstract available]","","Athletic Injuries; Biomechanics; Brain Injuries; English Abstract; Human; Risk; Soccer; Sports; adult; brain injury; central nervous system; clinical article; diagnosis; head injury; human; injury; sport; sport injury","","","","","","","UNFAD","6710674","German","UNFALLHEILKUNDE TRAUMATOL.","Article","Final","","Scopus","2-s2.0-0021336985" "von Lueder T.G.; Hodt A.; Gjerdalen G.F.; Steine K.","von Lueder, T.G. (16176815600); Hodt, A. (14031413800); Gjerdalen, G.F. (55603922300); Steine, K. (6603661906)","16176815600; 14031413800; 55603922300; 6603661906","Left ventricular biomechanics in professional football players","2018","Scandinavian Journal of Medicine and Science in Sports","28","1","","187","195","8","2","10.1111/sms.12893","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018293457&doi=10.1111%2fsms.12893&partnerID=40&md5=ac9555d22386b885ef5165e6cf3fe15b","Department of Cardiology, Akershus University Hospital, Lørenskog/Oslo, Norway; Center for Heart Failure Research, University of Oslo, Oslo, Norway; Section of Vascular Investigations, Oslo University Hospital Aker, Oslo, Norway","von Lueder T.G., Department of Cardiology, Akershus University Hospital, Lørenskog/Oslo, Norway, Center for Heart Failure Research, University of Oslo, Oslo, Norway; Hodt A., Center for Heart Failure Research, University of Oslo, Oslo, Norway, Section of Vascular Investigations, Oslo University Hospital Aker, Oslo, Norway; Gjerdalen G.F., Section of Vascular Investigations, Oslo University Hospital Aker, Oslo, Norway; Steine K., Department of Cardiology, Akershus University Hospital, Lørenskog/Oslo, Norway, Center for Heart Failure Research, University of Oslo, Oslo, Norway","Chronic exercise induces adaptive changes of left ventricular (LV) ejection and filling capacities which may be detected by novel speckle-tracking echocardiography (STE) and tissue Doppler imaging (TDI)-based techniques. A total of 103 consecutive male elite Norwegian soccer players and 46 age-matched healthy controls underwent echocardiography at rest. STE was used to assess LV torsional mechanics and LV systolic longitudinal strain (LS). Diastolic function was evaluated by trans-mitral blood flow, mitral annular velocities by TDI, and LV inflow propagation velocity by color M-mode. Despite similar global LS, players displayed lower basal wall and higher apical wall LS values vs controls, resulting in an incremental base-to-apex gradient of LS. Color M-mode and TDI-derived data were similar in both groups. Peak systolic twist rate (TWR) was significantly lower in players (86.4±2.8 vs controls 101.9±5.2 deg/s, P<.01). Diastolic untwisting rate (UTWR) was higher in players (−124.5±4.2 vs −106.9±6.7 deg/s) and peaked earlier during the cardiac cycle (112.7±0.8 vs 117.4±2.4% of systole duration, both P<.05). Untwisting/twisting ratio (−1.48±0.05 vs −1.11±0.08; P<.001) and untwisting performance (=UTR/TW; −9.25±0.34 vs −7.38±0.40 s−1, P<.01) were increased in players. Augmented diastolic wall strain (DWS), a novel measure of LV compliance in players, was associated with improved myocardial mechanical efficiency. The described myocardial biomechanics may underlie augmented exertional cardiac function in athletes and may have a potential role to characterize athlete′s heart by itself or to distinguish it from hypertensive or hypertrophic cardiomyopathy. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd","athlete; diastolic function; left ventricular function; speckle-tracking; strain; tissue Doppler; torsion","Adult; Athletes; Biomechanical Phenomena; Case-Control Studies; Echocardiography, Doppler; Heart Ventricles; Humans; Male; Soccer; Ventricular Function, Left; adult; athlete; biomechanics; case control study; diagnostic imaging; Doppler echocardiography; heart left ventricle function; heart ventricle; human; male; soccer","Gjerdalen G.F., Hisdal J., Solberg E.E., Andersen T.E., Radunovic Z., Steine K., The Scandinavian athlete's heart; echocardiographic characteristics of male professional football players, Scand J Med Sci Sports, 24, pp. e372-e380, (2014); Gjerdalen G.F., Hisdal J., Solberg E.E., Andersen T.E., Radunovic Z., Steine K., Atrial Size and Function in Athletes, Int J Sports Med, 36, pp. 1170-1176, (2015); Mitchell J.H., Haskell W., Snell P., Van Camp S.P., Task Force 8: classification of sports, J Am Coll Cardiol, 45, pp. 1364-1367, (2005); Pelliccia A., Maron B.J., Spataro A., Proschan M.A., Spirito P., The upper limit of physiologic cardiac hypertrophy in highly trained elite athletes, N Engl J Med, 324, pp. 295-301, (1991); Prior D.L., La Gerche A., The athlete's heart, Heart, 98, pp. 947-955, (2012); Sharma S., Maron B.J., Whyte G., Firoozi S., Elliott P.M., McKenna W.J., Physiologic limits of left ventricular hypertrophy in elite junior athletes: relevance to differential diagnosis of athlete's heart and hypertrophic cardiomyopathy, J Am Coll Cardiol, 40, pp. 1431-1436, (2002); Amundsen B.H., Helle-Valle T., Edvardsen T., Et al., Noninvasive myocardial strain measurement by speckle tracking echocardiography: validation against sonomicrometry and tagged magnetic resonance imaging, J Am Coll Cardiol, 47, pp. 789-793, (2006); Helle-Valle T., Crosby J., Edvardsen T., Et al., New noninvasive method for assessment of left ventricular rotation: speckle tracking echocardiography, Circulation, 112, pp. 3149-3156, (2005); Notomi Y., Lysyansky P., Setser R.M., Et al., Measurement of ventricular torsion by two-dimensional ultrasound speckle tracking imaging, J Am Coll Cardiol, 45, pp. 2034-2041, (2005); Notomi Y., Setser R.M., Shiota T., Et al., Assessment of left ventricular torsional deformation by Doppler tissue imaging: validation study with tagged magnetic resonance imaging, Circulation, 111, pp. 1141-1147, (2005); Burns A.T., La Gerche A., Prior D.L., Macisaac A.I., Left ventricular torsion parameters are affected by acute changes in load, Echocardiography, 27, pp. 407-414, (2010); Hodt A., Hisdal J., Stugaard M., Stranden E., Atar D., Steine K., Reduced preload elicits increased LV twist in healthy humans: an echocardiographic speckle-tracking study during lower body negative pressure, Clin Physiol Funct Imaging, 31, pp. 382-389, (2011); Notomi Y., Martin-Miklovic M.G., Oryszak S.J., Et al., Enhanced ventricular untwisting during exercise: a mechanistic manifestation of elastic recoil described by Doppler tissue imaging, Circulation, 113, pp. 2524-2533, (2006); Notomi Y., Srinath G., Shiota T., Et al., Maturational and adaptive modulation of left ventricular torsional biomechanics: Doppler tissue imaging observation from infancy to adulthood, Circulation, 113, pp. 2534-2541, (2006); Greenberg N.L., Vandervoort P.M., Firstenberg M.S., Garcia M.J., Thomas J.D., Estimation of diastolic intraventricular pressure gradients by Doppler M-mode echocardiography, Am J Physiol Heart Circ Physiol, 280, pp. H2507-H2515, (2001); Hodt A., Hisdal J., Stugaard M., Stranden E., Atar D., Steine K., Increased LV apical untwist during preload reduction in healthy humans: an echocardiographic speckle tracking study during lower body negative pressure, Physiol Rep, 3, pp. 1-12, (2015); Notomi Y., Popovic Z.B., Yamada H., Et al., Ventricular untwisting: a temporal link between left ventricular relaxation and suction, Am J Physiol Heart Circ Physiol, 294, pp. H505-H513, (2008); Doucende G., Schuster I., Rupp T., Et al., Kinetics of left ventricular strains and torsion during incremental exercise in healthy subjects: the key role of torsional mechanics for systolic-diastolic coupling, Circ Cardiovasc Imaging, 3, pp. 586-594, (2010); Neilan T.G., Ton-Nu T.T., Jassal D.S., Et al., Myocardial adaptation to short-term high-intensity exercise in highly trained athletes, J Am Soc Echocardiogr, 19, pp. 1280-1285, (2006); Nottin S., Doucende G., Schuster-Beck I., Dauzat M., Obert P., Alteration in left ventricular normal and shear strains evaluated by 2D-strain echocardiography in the athlete's heart, J Physiol, 586, pp. 4721-4733, (2008); Nottin S., Doucende G., Schuster I., Tanguy S., Dauzat M., Obert P., Alteration in left ventricular strains and torsional mechanics after ultralong duration exercise in athletes, Circ Cardiovasc Imaging, 2, pp. 323-330, (2009); De Luca A., Stefani L., Pedrizzetti G., Pedri S., Galanti G., The effect of exercise training on left ventricular function in young elite athletes, Cardiovasc Ultrasound, 9, (2011); Zocalo Y., Guevara E., Bia D., Et al., A reduction in the magnitude and velocity of left ventricular torsion may be associated with increased left ventricular efficiency: evaluation by speckle-tracking echocardiography, Rev Esp Cardiol, 61, pp. 705-713, (2008); D'Andrea A., Cocchia R., Riegler L., Et al., Left ventricular myocardial velocities and deformation indexes in top-level athletes, J Am Soc Echocardiogr, 23, pp. 1281-1288, (2010); D'Ascenzi F., Pelliccia A., Alvino F., Et al., Effects of training on LV strain in competitive athletes, Heart, 101, pp. 1834-1839, (2015); Tumuklu M.M., Etikan I., Cinar C.S., Left ventricular function in professional football players evaluated by tissue Doppler imaging and strain imaging, Int J Cardiovasc Imaging, 24, pp. 25-35, (2008); Ohtani T., Mohammed S.F., Yamamoto K., Et al., Diastolic stiffness as assessed by diastolic wall strain is associated with adverse remodelling and poor outcomes in heart failure with preserved ejection fraction, Eur Heart J, 33, pp. 1742-1749, (2012); Berge H.M., Gjerdalen G.F., Andersen T.E., Solberg E.E., Steine K., Blood pressure in professional male football players in Norway, J Hypertens, 31, pp. 672-679, (2013); Gobel F.L., Norstrom L.A., Nelson R.R., Jorgensen C.R., Wang Y., The rate-pressure product as an index of myocardial oxygen consumption during exercise in patients with angina pectoris, Circulation, 57, pp. 549-556, (1978); de Simone G., Chinali M., Galderisi M., Et al., Myocardial mechano-energetic efficiency in hypertensive adults, J Hypertens, 27, pp. 650-655, (2009); Lang R.M., Bierig M., Devereux R.B., Et al., Recommendations for chamber quantification: a report from the American Society of Echocardiography's Guidelines and Standards Committee and the Chamber Quantification Writing Group, developed in conjunction with the European Association of Echocardiography, a branch of the European Society of Cardiology, J Am Soc Echocardiogr, 18, pp. 1440-1463, (2005); Burns A.T., McDonald I.G., Thomas J.D., Macisaac A., Prior D., Doin’ the twist: new tools for an old concept of myocardial function, Heart, 94, pp. 978-983, (2008); Steine K., Stugaard M., Smiseth O.A., Mechanisms of retarded apical filling in acute ischemic left ventricular failure, Circulation, 99, pp. 2048-2054, (1999); Nagueh S.F., Appleton C.P., Gillebert T.C., Et al., Recommendations for the evaluation of left ventricular diastolic function by echocardiography, J Am Soc Echocardiogr, 22, pp. 107-133, (2009); Galderisi M., Lomoriello V.S., Santoro A., Et al., Differences of myocardial systolic deformation and correlates of diastolic function in competitive rowers and young hypertensives: a speckle-tracking echocardiography study, J Am Soc Echocardiogr, 23, pp. 1190-1198, (2010); Butz T., van Buuren F., Mellwig K.P., Et al., Two-dimensional strain analysis of the global and regional myocardial function for the differentiation of pathologic and physiologic left ventricular hypertrophy: a study in athletes and in patients with hypertrophic cardiomyopathy, Int J Cardiovasc Imaging, 27, pp. 91-100, (2011); Cappelli F., Toncelli L., Cappelli B., Et al., Adaptative or maladaptative hypertrophy, different spatial distribution of myocardial contraction, Clin Physiol Funct Imaging, 30, pp. 6-12, (2010); Opdahl A., Helle-Valle T., Remme E.W., Et al., Apical rotation by speckle tracking echocardiography: a simplified bedside index of left ventricular twist, J Am Soc Echocardiogr, 21, pp. 1121-1128, (2008); Wang J., Buergler J.M., Veerasamy K., Ashton Y.P., Nagueh S.F., Delayed untwisting: the mechanistic link between dynamic obstruction and exercise tolerance in patients with hypertrophic obstructive cardiomyopathy, J Am Coll Cardiol, 54, pp. 1326-1334, (2009); Wang J., Khoury D.S., Kurrelmeyer K., Torre-Amione G., Nagueh S.F., Assessment of left ventricular relaxation by untwisting rate based on different algorithms, J Am Soc Echocardiogr, 22, pp. 1040-1046, (2009); Vitarelli A., Capotosto L., Placanica G., Et al., Comprehensive assessment of biventricular function and aortic stiffness in athletes with different forms of training by three-dimensional echocardiography and strain imaging, Eur Heart J Cardiovasc Imaging, 14, pp. 1010-1020, (2013); Weiner R.B., Hutter A.M., Wang F., Et al., The impact of endurance exercise training on left ventricular torsion, JACC Cardiovasc Imaging, 3, pp. 1001-1009, (2010); Borg A.N., Harrison J.L., Argyle R.A., Ray S.G., Left ventricular torsion in primary chronic mitral regurgitation, Heart, 94, pp. 597-603, (2008); Lam W., Leano R., Haluska B., Marwick T.H., Effects of myocardial ischaemia on left ventricular untwist and filling pressure, Heart, 97, pp. 757-761, (2011); Takeuchi M., Borden W.B., Nakai H., Et al., Reduced and delayed untwisting of the left ventricle in patients with hypertension and left ventricular hypertrophy: a study using two-dimensional speckle tracking imaging, Eur Heart J, 28, pp. 2756-2762, (2007); Nottin S., Menetrier A., Rupp T., Boussuges A., Tordi N., Role of left ventricular untwisting in diastolic dysfunction after long duration exercise, Eur J Appl Physiol, 112, pp. 525-533, (2012); Wasfy M.M., Weiner R.B., Differentiating the athlete's heart from hypertrophic cardiomyopathy, Curr Opin Cardiol, 30, pp. 500-505, (2015); Wang J., Khoury D.S., Yue Y., Torre-Amione G., Nagueh S.F., Left ventricular untwisting rate by speckle tracking echocardiography, Circulation, 116, pp. 2580-2586, (2007); D'Ascenzi F., Cameli M., Zaca V., Et al., Supernormal diastolic function and role of left atrial myocardial deformation analysis by 2D speckle tracking echocardiography in elite soccer players, Echocardiography, 28, pp. 320-326, (2011)","T.G. von Lueder; Department of Cardiology, Akershus University Hospital, Lørenskog/Oslo, Norway; email: tomvonoslo@yahoo.com","","Blackwell Munksgaard","09057188","","SMSSE","28378431","English","Scand. J. Med. Sci. Sports","Article","Final","","Scopus","2-s2.0-85018293457" "Lo T.-Y.; Yo C.; Wu-Ye C.; Huang C.; Chang J.-H.","Lo, Tang-Yun (57208056805); Yo, Chen (57208058059); Wu-Ye, Chang (57208052919); Huang, Chien (57208052562); Chang, Jia-Hao (8072971800)","57208056805; 57208058059; 57208052919; 57208052562; 8072971800","Kinematics analysis of cutting with dribbling during different approach speeds and cutting directions in soccer","2019","International Journal of Performance Analysis in Sport","19","2","","216","226","10","2","10.1080/24748668.2019.1586504","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063677169&doi=10.1080%2f24748668.2019.1586504&partnerID=40&md5=25f0b0c14885de492620efc460a00157","Department of Physical Education, National Taiwan Normal University, Taipei, Taiwan; School of Physical Education and Health, Hangzhou Normal University, Hangzhou, China; Department of Ball Sports, University of Taipei, Taipei, Taiwan","Lo T.-Y., Department of Physical Education, National Taiwan Normal University, Taipei, Taiwan; Yo C., Department of Physical Education, National Taiwan Normal University, Taipei, Taiwan, School of Physical Education and Health, Hangzhou Normal University, Hangzhou, China; Wu-Ye C., Department of Ball Sports, University of Taipei, Taipei, Taiwan; Huang C., Department of Physical Education, National Taiwan Normal University, Taipei, Taiwan; Chang J.-H., Department of Physical Education, National Taiwan Normal University, Taipei, Taiwan","We evaluated whether knees and hips are the key regions to anticipate an opponent’s cutting directions by using the kinematics method during different cutting tasks. Eighteen male university division 1 soccer players were the subjects of this study. Each participant was asked to cut with dribbling in four situations (2 speeds × 2 directions). The motion system and force platform were used synchronously to collect movements and ground reaction force during cutting with dribbling. The two-way repeated-measures analysis of variance was used for statistical analysis (α = .05). The knee external rotation angle of the non-pivot leg was greater when cutting to the non-dominant side at the event of the non-pivot leg toe-off and pivot leg landing. The hip extension/flexion angle of the non-pivot leg was different between directions and speeds at both events. The height difference between the anterior-superior iliac spines was greater at the pivot leg landing when cutting to the non-dominant side. This study might provide the evidence to support the visual search strategies for observing the regions of hip and knee to predict cutting direction. Therefore, defenders could focus on the motion of the pelvis, hip, and knee to anticipate the cutting motion in the match. © 2019, © 2019 Cardiff Metropolitan University.","Biomechanics; football; joint angle; lower limb; motion analysis","","Amiri-Khorasani M., Osman N., Yusof A., Kinematics analysis: Number of trials necessary to achieve performance stability during soccer instep kicking, 23, 1, pp. 15-19, (2010); Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, Journal of Sports Science & Medicine, 1, 3, pp. 72-79, (2002); Chang J., Hsu Y., Hsu A., Chang G., Kinematic analysis of soccer high kicking, Sports and Excersice Research, 11, 1, pp. 71-82, (2009); Chang J., Lo T., Chang W., Chen Y., ISBS 2017, Proceedings of the 35th International Conference on Biomechanics in Sports, (2017); Davies J.L., Button K., Sparkes V., van Deursen R.W., Frontal plane movement of the pelvis and thorax during dynamic activities in individuals with and without anterior cruciate ligament injury, Knee, (2018); Hargreaves A., Bate R., Skills and strategies for coaching soccer: Champaign, IL: Human kinetics, (2010); Hulsdunker T., Struder H.K., Mierau A., Visual motion processing subserves faster visuomotor reaction in badminton players, Medicine and Science in Sports and Exercise, 49, 6, pp. 1097-1110, (2017); Irwin G., Exell T.A., Manning M.L., Kerwin D.G., Functional phases and angular momentum characteristics of Tkatchev and Kovacs, Journal of Sports Sciences, 35, 6, pp. 610-616, (2017); Ismail A.R., Mansor M.R.A., Mahamad Ali M.F.S.J., Makhtar N., Biomechanical analysis of ankle force: A case study for instep kicking, (2010); Leardini A., Berti L., Begon M., Allard P., Effect of trunk sagittal attitude on shoulder, thorax and pelvis three-dimensional kinematics in able-bodied subjects during gait, PloS one, 8, 10, (2013); Matkovich M.J., Davis J., Elite soccer drills, (2009); Mok K.M., Bahr R., Krosshaug T., Reliability of lower limb biomechanics in two sport-specific sidestep cutting tasks, Sports Biomechanics / International Society of Biomechanics in Sports, pp. 1-11, (2017); Nagano T., Kato T., Fukuda T., Visual search strategies of soccer players in one-on-one defensive situations on the field, Perceptual and Motor Skills, 99, 3, pp. 968-974, (2004); Rosa R.G.D., Gomenuka N.A., Oliveira H.B., Peyre-Tartaruga L.A., Inclined weight-loaded walking at different speeds: Pelvis-shoulder coordination, trunk movements and cost of transport, Journal of Motor Behavior, 50, 1, pp. 73-79, (2018); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomechanics / International Society of Biomechanics in Sports, 4, 1, pp. 59-72, (2005); Sim T., Yoo H., Choi A., Lee K.Y., Choi M.T., Lee S., Mun J.H., Analysis of pelvis-thorax coordination patterns of professional and amateur golfers during golf swing, Journal of Motor Behavior, 49, 6, pp. 668-674, (2017); Smith C., Gilleard W., Hammond J., Brooks L., The application of an exploratory factor analysis to investigate the inter-relationships amongst joint movement during performance of a football skill, Journal of Sports Science & Medicine, 5, 4, pp. 417-524, (2006)","J.-H. Chang; Department of Physical education, National Taiwan Normal University, Taipei City, No.88, Sec. 4, Tingzhou Rd., Wenshan Dist. 116, Taiwan; email: jhchang@ntnu.edu.tw","","Routledge","14748185","","","","English","Int. J. Perform. Anal. Sport","Article","Final","","Scopus","2-s2.0-85063677169" "Baumgart C.; Grim C.; Heiss R.; Ehrenstein P.; Freiwald J.; Hoppe M.W.","Baumgart, Christian (15021681900); Grim, Casper (24554006700); Heiss, Rafael (57193811179); Ehrenstein, Philipp (57226795678); Freiwald, Jürgen (6701468045); Hoppe, Matthias Wilhelm (37561282400)","15021681900; 24554006700; 57193811179; 57226795678; 6701468045; 37561282400","Rehabilitation after a complete avulsion of the proximal rectus femoris muscle: Considerations from a case report","2021","International Journal of Environmental Research and Public Health","18","16","8727","","","","2","10.3390/ijerph18168727","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85112695335&doi=10.3390%2fijerph18168727&partnerID=40&md5=35b96a5e83c2c73900b74c96bd7d53e1","Department of Movement and Training Science, University of Wuppertal, Fuhlrottstraße 10, Wuppertal, 42119, Germany; Department of Orthopedic and Trauma Surgery, Klinikum Osnabrück, Am Finkenhuegel 1, Osnabrueck, 49076, Germany; Department of Human Science, University of Osnabrueck, Barbarastrasse 22c, Osnabrueck, 49076, Germany; Institute of Radiology, University Hospital Erlangen, Maximiliansplatz 3, Erlangen, 91054, Germany; Practice OrthoPro Duesseldorf, Breitestr 69, Duesseldorf, 40213, Germany; Institute of Movement and Training Science, University of Leipzig, Jahnallee 59, Leipzig, 04109, Germany","Baumgart C., Department of Movement and Training Science, University of Wuppertal, Fuhlrottstraße 10, Wuppertal, 42119, Germany; Grim C., Department of Orthopedic and Trauma Surgery, Klinikum Osnabrück, Am Finkenhuegel 1, Osnabrueck, 49076, Germany, Department of Human Science, University of Osnabrueck, Barbarastrasse 22c, Osnabrueck, 49076, Germany; Heiss R., Institute of Radiology, University Hospital Erlangen, Maximiliansplatz 3, Erlangen, 91054, Germany; Ehrenstein P., Practice OrthoPro Duesseldorf, Breitestr 69, Duesseldorf, 40213, Germany; Freiwald J., Department of Movement and Training Science, University of Wuppertal, Fuhlrottstraße 10, Wuppertal, 42119, Germany; Hoppe M.W., Institute of Movement and Training Science, University of Leipzig, Jahnallee 59, Leipzig, 04109, Germany","Background: A complete avulsion of the proximal rectus femoris muscle is a rare but se-verity injury. There is a lack of substantial information for its operative treatment and rehabilitation; in particular there is a lack of biomechanical data to evaluate long-term outcomes. Case presenta-tion: The case report presents the injury mechanism and surgical treatment of a complete avulsion of the proximal rectus femoris muscle in a 41-year-old recreational endurance athlete. Moreover, within a one-year follow-up period, different biomechanical tests were performed to get more functional insights into changes in neuromuscular control, structural muscle characteristics, and endurance performance. Within the first month post-surgery, an almost total neuromuscular inhibition of the rectus femoris muscle was present. A stepwise reduction in inter-limb compensations was ob-servable (e.g., in crank torque during cycling) during the rehabilitation. Muscular intra-limb compensations were shown at six months post-surgery and even one year after surgery, which were also represented in the long-term adaption of the muscle characteristics and leg volumes. A changed motor control strategy was shown by asymmetric muscle activation patterns during ergometer cy-cling, while the power output was almost symmetric. During rehabilitation, there might be a benefit to normalizing neuromuscular muscle activation in ergometer cycling using higher loads. Conclu-sions: While the endurance performance recovered after six months, asymmetries in neuromuscular control and structural muscle characteristics indicate the long-term presence of inter-and intra-limb compensation strategies. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.","Electromyography; Isokinetic; Muscle injury; Quadriceps; Rehabilitation; Strength; Surgery; Tendon rupture","Adult; Athletes; Ergometry; Humans; Quadriceps Muscle; Torque; analgesic agent; anticoagulant agent; apixaban; elequis; enoxaparin; narcotic analgesic agent; nonsteroid antiinflammatory agent; proton pump inhibitor; avulsion; biomechanics; inhibition; muscle; adult; anterior cruciate ligament reconstruction; Article; avulsion injury; biomechanics; case report; clinical article; cycling; echography; electromyography; endurance athlete; hip pain; human; knee meniscus rupture; male; manual lymphatic drainage; motor control; muscle injury; muscle mass; muscle strength; neuromuscular function; nuclear magnetic resonance imaging; rectus femoris muscle; running; soccer; swelling; tendon rupture; torque; vein thrombosis; weight bearing; athlete; ergometry; quadriceps femoris muscle; surgery","Bordalo-Rodrigues M., Rosenberg Z.S., MR imaging of the proximal rectus femoris musculotendinous unit, Magn. 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Arthrosc, 25, pp. 1385-1394, (2017); Grooms D., Appelbaum G., Onate J., Neuroplasticity following anterior cruciate ligament injury: A framework for visual-motor training approaches in rehabilitation, J. Orthop. Sports Phys. Ther, 45, pp. 381-393, (2015); Gokeler A., Verhagen E., Hirschmann M.T., Let us rethink research for ACL injuries: A call for a more complex scientific approach, Knee Surg. Sports Traumatol. Arthrosc, 26, pp. 1303-1304, (2018); Loureiro A., Constantinou M., Diamond L.E., Beck B., Barrett R., Individuals with mild-to-moderate hip osteoarthritis have lower limb muscle strength and volume deficits, BMC Musculoskelet. Disord, 19, (2018)","C. Baumgart; Department of Movement and Training Science, University of Wuppertal, Wuppertal, Fuhlrottstraße 10, 42119, Germany; email: baumgart@uni-wuppertal.de","","MDPI","16617827","","","34444475","English","Int. J. Environ. Res. Public Health","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85112695335" "Sánchez-Sánchez J.; Gallardo-Guerrero A.M.; García-Gallart A.; Sánchez-Sáez J.A.; Felipe J.L.; Encarnación-Martínez A.","Sánchez-Sánchez, Javier (57202375975); Gallardo-Guerrero, Ana M. (55340452800); García-Gallart, Antonio (57193419046); Sánchez-Sáez, Juan Antonio (57193416113); Felipe, José L. (55340056400); Encarnación-Martínez, Alberto (54585194700)","57202375975; 55340452800; 57193419046; 57193416113; 55340056400; 54585194700","Influence of the structural components of artificial turf systems on impact attenuation in amateur football players","2019","Scientific Reports","9","1","7774","","","","3","10.1038/s41598-019-44270-8","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85066142770&doi=10.1038%2fs41598-019-44270-8&partnerID=40&md5=ecb2d976fa7af93ab6a00acd9ca7c6a3","Universidad Europea de Madrid, School of Sport Sciences, Villaviciosa de Odón-Madrid, 28670, Spain; Universidad Católica de Murcia, Faculty of Sports, Guadalupe-Murcia, 30107, Spain; Department of Physical Education and Sports, University of Valencia, Gascó Oliag St., 3, Valencia, 46010, Spain","Sánchez-Sánchez J., Universidad Europea de Madrid, School of Sport Sciences, Villaviciosa de Odón-Madrid, 28670, Spain; Gallardo-Guerrero A.M., Universidad Católica de Murcia, Faculty of Sports, Guadalupe-Murcia, 30107, Spain; García-Gallart A., Universidad Católica de Murcia, Faculty of Sports, Guadalupe-Murcia, 30107, Spain; Sánchez-Sáez J.A., Universidad Católica de Murcia, Faculty of Sports, Guadalupe-Murcia, 30107, Spain; Felipe J.L., Universidad Europea de Madrid, School of Sport Sciences, Villaviciosa de Odón-Madrid, 28670, Spain; Encarnación-Martínez A., Department of Physical Education and Sports, University of Valencia, Gascó Oliag St., 3, Valencia, 46010, Spain","The purpose of this research was to evaluate the influence of the structural components of different 3rd generation artificial turf football field systems on the biomechanical response of impact attenuation in amateur football players. A total of 12 amateur football players (24.3 ± 3.7 years, 73.5 ± 5.5 kg, 178.3 ± 4.1 cm and 13.7 ± 4.3 years of sport experience) were evaluated on three third generation artificial turf systems (ATS) with different structural components. ATS were composed of asphalt sub-base and 45 mm of fibre height with (ATS1) and without (ATS2) elastic layer or compacted granular sub-base, 60 mm of fibre height without elastic layer (ATS3). Two triaxial accelerometers were firmly taped to the forehead and the distal end of the right tibia of each individual. The results reveal a higher force reduction on ATS3 in comparison to ATS1 (+6.24%, CI95%: 1.67 to 10.92, ES: 1.07; p < 0.05) and ATS2 (+21.08%, CI95%: 16.51 to 25.66, ES: 2.98; p < 0.05) elastic layer. Tibia acceleration rate was lower on ATS3 than ATS1 (−0.32, CI95%: −0.60 to −0.03, ES: 4.23; p < 0.05) and ATS2 (−0.35, CI95%: −0.64 to −0.06; ES: 4.69; p < 0.05) at 3.3 m/s. A very large correlation (r = 0.7 to 0.9; p < 0.05) was found between energy restitution and fibre height in both head and tibial peak acceleration and stride time. In conclusion, structural components (fibre height, infill, sub-base and elastic layer) determine the mechanical properties of artificial turf fields. A higher force reduction and lower energy restitution diminished the impact received by the player which could protect against injuries associated with impacts compared to harder artificial turf surfaces. © 2019, The Author(s).","","Acceleration; Adult; Athletes; Biomechanical Phenomena; Floors and Floorcoverings; Humans; Male; Running; Soccer; Young Adult; acceleration; adult; athlete; biomechanics; building; human; male; physiology; running; soccer; young adult","Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in FA premier league soccer, J Sports Sci Med., 6, pp. 63-70, (2007); Aughey R., Applications of GPS technologies to field sports, J Hum Kinet., 6, pp. 295-310, (2011); Andersson H., Ekblom B., Krustrup P., Elite football on artificial turf versus natural grass: Movement patterns, technical standards, and player impressions, J Sports Sci., 26, pp. 113-122, (2008); Brito J., Krustrup P., Rebelo A., The influence of the playing surface on the exercise intensity of small-sided recreational soccer games, Hum Mov Sci., 31, pp. 656-946, (2012); Hughes M.G., Et al., Effects of playing surface on physiological responses and performance variables in a controlled football simulation, J Sports Sci., 31, pp. 878-886, (2013); Nedelec M., Et al., Physical performance and subjective ratings after a soccer-specific exercise simulation: Comparison of natural grass versus artificial turf, J. 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Anthropometric and physiological correlates of 20 m sprint performance in male soccer players, Res Sports Med., 24, pp. 341-351, (2016); Derrick T.R., Dereu D., McLean S.P., Impacts and kinematic adjustments during an exhaustive run, Med Sci Sports Exerc., 34, pp. 998-1002, (2002); Mizrahi J., Verbitsky O., Isakov E., Daily D., Effect of fatigue on leg kinematics and impact acceleration in long distance running, Hum Mov Sci., 19, pp. 139-151, (2000); Hamill J., Derrick T.R., Holt K.G., Shock attenuation and stride frequency during running, Hum Mov Sci., 14, pp. 45-60, (1995); Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football-the UEFA injury study, Br J Sports Med., 45, pp. 553-558, (2009); Millet G., Perrey S., Foissac M., The role of engineering in fatigue reduction, The Engineering of Sport., 6, pp. 381-386, (2006); Williams S., Trewartha G., Kemp S.P.T., Michell R., Stokes K.A., The influence of an artificial playing surface on injury risk and perceptions of muscle soreness in elite Rugby Union, Scand J Med Sci Sports., 26, pp. 101-108, (2016); Poulos C.C., Et al., The perceptions of professional soccer players on the risk of injury from competition and training on natural grass and 3rd generation artificial turf, BMC Sports Sci Med Rehabil., 6, (2014); Ranson C., George J., Rafferty J., Miles J., Moore I., Playing surface and UK professional rugby union injury risk, J Sports Sci., 36, pp. 2393-2398, (2018); Lanzetti R.M., Et al., The influence of playing surface on injury risk in italian elite rugby players, Muscles Ligaments Tendons J., 7, pp. 180-185, (2017); Hardin E.C., van den Bogert A.J., Hamill J., Kinematic adaptations during running: Effects of footwear, surface, and duration, Med Sci Sports Exerc., 36, pp. 838-844, (2004); Meyers M.C., Barnhill B.S., Incidence, causes and severity of high school football injuries on FieldTurf versus natural grass: A 5-years prospective study, Am J Sports Med., 32, pp. 1626-1638, (2004); Encarnacion-Martinez A., Perez-Soriano P., Llana-Belloch S., Differences in ground reaction forces and shock impacts between Nordic walking and walking, Res Q Exerc Sport., 86, pp. 94-99, (2015); Carroll T.J., Taylor J.L., Gandevia S.C., Recovery of central and peripheral neuromuscular fatigue after exercise, J Appl Physiol., 122, pp. 1068-1076, (2017); Lucas-Cuevas A.G., Encarnacion-Martinez A., Camacho-Garcia A., Llana-Belloch S., Perez-Soriano P., The location of the tibial accelerometer does influence impact acceleration parameters during running, J Sports Sci., 35, pp. 1734-1738, (2016); The Method and Requirements Manual for the FIFA Quality Concept, (2015); Cohen J., Quantitative methods in phychology: A power primer, Physchol Bull., 112, pp. 155-159, (1992); Hopkins W., Marshall S., Batterham A., Hanin J., Progressive statics for studies in sport medicine and exercise science, Med Sci Sports Exerc., 41, pp. 3-12, (2009)","J. Sánchez-Sánchez; Universidad Europea de Madrid, School of Sport Sciences, Villaviciosa de Odón-Madrid, 28670, Spain; email: javier.sanchez2@universidadeuropea.es","","Nature Publishing Group","20452322","","","31123289","English","Sci. Rep.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85066142770" "Sinclair J.; Hobbs S.J.","Sinclair, J. (36544295100); Hobbs, S.J. (57192912686)","36544295100; 57192912686","Bilateral differences in knee and ankle loading of the support limb during maximal instep soccer kicking; [Contraintes appliquées au niveau du genou et de la cheville lors de tirs au but avec le membre dominant, ou non dominant]","2016","Science and Sports","31","4","","e73","e78","5","4","10.1016/j.scispo.2016.01.009","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84963938667&doi=10.1016%2fj.scispo.2016.01.009&partnerID=40&md5=2ba9ef3941bab1f49a53ce002e0e97a1","University of Central Lancashire, Division of Sport, Exercise and Nutritional Sciences, Preston, PR1 2HE, United Kingdom","Sinclair J., University of Central Lancashire, Division of Sport, Exercise and Nutritional Sciences, Preston, PR1 2HE, United Kingdom; Hobbs S.J., University of Central Lancashire, Division of Sport, Exercise and Nutritional Sciences, Preston, PR1 2HE, United Kingdom","Objective Kicking actions have been implicated in the aetiology of soccer injuries and the unilateral nature of kicking may influence this. The biomechanics of the support limb are distinct between the dominant and non-dominant during instep kicking, although little is known about how these alterations in mechanics may be associated with the risk of injury. This study aimed to examine vertical ground reaction forces as well as knee/ankle loads when performing maximal kicks with the dominant and non-dominant limbs. Material and methods Twenty male academy soccer players performed maximal kicks with their dominant and non-dominant limbs striking a force platform with their support limb. Vertical ground reaction forces and knee/ankle joint kinetics were obtained from each limb and then contrasted using paired t-tests. Results Significant increases in knee extensor and abduction moment were found when using the non-dominant limb. It was also shown that patellofemoral contact force was significantly higher in the non-dominant kicking condition. Conclusions The findings from the current investigation have clinical significance and support the notion that kicking with the non-dominant limb may be associated with and increased injury aetiology. © 2016 Elsevier Masson SAS","Ankle; Biomechanics; Injury; Knee; Soccer","abduction; adult; ankle; ankle loading; Article; biomechanics; controlled study; force; human; instep soccer kicking; kinematics; kinetics; knee; knee extensor; knee function; knee loading; limb; male; patellofemoral contact force; priority journal; soccer; Student t test; support limb; vertical ground reaction force","Lees A., Nolan L., The biomechanics of soccer: a review, J Sports Sci, 16, pp. 211-234, (1998); De Witt J.K., Hinrichs R.N., Mechanical factors associated with the development of high ball velocity during an instep soccer kick, Sports Biomech, 11, pp. 382-390, (2012); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J Sport Sci Med, 6, pp. 154-165, (2007); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med Sci Sports Exerc, 30, pp. 917-927, (1998); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kick with the preferred and non-preferred leg, J Sports Sci, 24, pp. 529-541, (2006); Agel J., Evans T.A., Dick R., Et al., Descriptive epidemiology of collegiate men's soccer injuries: National Collegiate Athletic Association Injury Surveillance System, 1988–1989 through 2002–2003, J Athl Train, 42, pp. 270-277, (2007); Dick R., Putukian M., Agel J., Et al., Descriptive epidemiology of collegiate women's soccer injuries: National Collegiate Athletic Association Injury Surveillance System, 1988–1989 through 2002–2003, J Athl Train, 42, pp. 278-285, (2007); Ekstrand J., Gillquist J., Soccer injuries and their mechanism: a prospective study, Med Sci Sports Exerc, 15, pp. 267-270, (1983); Fried T., Loyd G.J., An overview of common soccer injuries: management and prevention, Sports Med, 14, pp. 262-275, (1992); Besier T., Lloyd D., Ackland T., Muscle activation strategies at the knee during running and cutting manoeuvres, Med Sci Sports Exerc, 35, pp. 119-127, (2003); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Med Sci Sports Exerc, 36, pp. 1017-1028, (2004); Rahnama N., Reilly T., Lees A., Injury risk associated with playing actions during competitive soccer, B J Sports Med, 36, pp. 354-359, (2002); Withers R., Maricic Z., Wasilewski Z., Et al., Match analysis of Australian professional soccer players, J Hum Mov Stud, 8, pp. 159-176, (1982); Dorge H.C., Anderson T.B., Sorensen H., Et al., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, J Sports Sci, 20, pp. 293-299, (2002); Gstottner M., Neher A., Scholtz A., Et al., Balance ability and muscle response of the preferred and non-preferred leg in soccer players, Motor Control, 13, pp. 218-231, (2009); Clagg S.E., Warnock A., Thomas J.S., Kinetic analyses of maximal effort soccer kicks in female collegiate athletes, Sports Biomech, 8, pp. 141-153, (2009); Brophy R., Silvers H.J., Gonzales T., Et al., Gender influences: the role of leg dominance in ACL injury among soccer players, Br J Sports Med, 44, pp. 694-697, (2010); Isokawa M., Lees A.A., Biomechanical analysis of the instep kick motion in soccer, Proceedings of oral sessions, science and football, pp. 449-455, (1988); Cappozzo A., Catani F., Leardini A., Et al., Position and orientation in space of bones during movement: anatomical frame definition and determination, Clin Biomech, 10, pp. 171-178, (1995); Selbie S.W., Hamill J., Kepple T.M., Three-dimensional kinetics, Research methods in biomechanics, pp. 162-170, (2013); Sinclair J., Greenhalgh A., Edmundson C.J., Et al., The efficacy of barefoot and shod running and shoes designed to mimic barefoot running, Footwear Sci, 5, pp. 45-53, (2013); Ho K.Y., Blanchette M.G., Powers C.M., The influence of heel height on patellofemoral joint kinetics during walking, Gait Posture, 36, pp. 271-275, (2012); van Eijden T.M., Kouwenhoven E., Verburg J., Et al., A mathematical model of the patellofemoral joint, J Biomech, 19, pp. 219-229, (1986); Powers C.M., Lilley J.C., Lee T.Q., The effects of axial and multiplane loading of the extensor mechanism on the patellofemoral joint, Clin Biomechnics, 13, pp. 616-624, (1998); Self B.P., Paine D., Ankle biomechanics during four landing techniques, Med Sci Sports Exerc, 33, pp. 1338-1344, (2001); Zhao D., Banks S.A., Mitchell K.H., Et al., Correlation between the knee adduction torque and medial contact force for a variety of gait patterns, J Orthop Res, 25, pp. 789-797, (2007); Miyazaki T., Wada M., Kawahara H., Et al., Dynamic load at baseline can predict radiographic disease progression in medial compartment knee osteoarthritis, Ann Rheum Dis, 61, pp. 617-622, (2002); Sigward S.M., Pollard C.D., Powers C.M., The influence of sex and maturation on landing biomechanics: implications for anterior cruciate ligament injury, Scand J Med Sci Sport, 22, pp. 502-509, (2012); Barfield W.R., Kirkendall D., Yu B., Kinematic instep kicking differences between elite female and male soccer players, J Sport Sci Med, 3, pp. 72-79, (2002); Robinson R.L., Nee R.J., Analysis of hip strength in females seeking physical therapy treatment for unilateral patellofemoral pain syndrome, J Orthop Sports Phys Ther, 37, pp. 232-238, (2007)","J. Sinclair; University of Central Lancashire, Division of Sport, Exercise and Nutritional Sciences, Preston, PR1 2HE, United Kingdom; email: JKSinclair@uclan.ac.uk","","Elsevier Masson SAS","07651597","","SCSPE","","English","Sci. Sports","Article","Final","","Scopus","2-s2.0-84963938667" "Bernard P.-L.; Amato M.","Bernard, P.-L. (55419297500); Amato, M. (57196562184)","55419297500; 57196562184","Influence of sport discipline and age on balance of the knee joint muscles; [Influence de la pratique sportive et de l'âge sur les adaptations musculaires du genou : application au football et à la gymnastique]","2009","Science and Sports","24","3-4","","173","177","4","4","10.1016/j.scispo.2008.03.007","https://www.scopus.com/inward/record.uri?eid=2-s2.0-67651124830&doi=10.1016%2fj.scispo.2008.03.007&partnerID=40&md5=8992447e5ce3a68d55a2f7325330e3b3","UFR APS, EA 2991, laboratoire efficience et déficience motrice, 34090 Montpellier, 700, avenue du Pic-Saint-Loup, France; UFR APS, 06200 Nice, 261, route de Grenoble, France","Bernard P.-L., UFR APS, EA 2991, laboratoire efficience et déficience motrice, 34090 Montpellier, 700, avenue du Pic-Saint-Loup, France; Amato M., UFR APS, 06200 Nice, 261, route de Grenoble, France","Introduction: The aim of this study was to assess the influence of sport discipline and age on maximal torque, mean power output and balance of the knee joint muscles. Isokinetic data was evaluated for 58 athletic males, separated into two groups of 38 soccer and 20 gymnasts players. Results: They demonstrated the influence of soccer activity on muscle capacities and the specific development of the flexors when body mass was taken into account. Our study showed the different adaptations in the three age sub-groups of the soccer and gymnast groups. Conclusion: Values were significantly higher in the soccer players for flexor muscles, but no significant differences were demonstrated between the two groups of athletes for the extensor muscles. Analysis also showed the different adaptations in the three age sub-groups of the soccer and gymnast groups. The analysis of peak torque and power demonstrated that gymnastic activity led to a specific development of extensor muscles with age. In a future study, longitudinal analysis will be used to assess the changes in isokinetic characteristics of knee muscles. © 2009 Elsevier Masson SAS. All rights reserved.","Isokinetic; Knee; Sport","adaptation; age; article; athlete; athletic performance; biomechanics; body equilibrium; controlled study; flexor muscle; human; human experiment; isokinetic exercise; knee function; male; muscle strength; normal human; priority journal; torque","Isocinétisme et médecine sportive, (1998); Croisier J.L., Ganteaume S., Binet J., Et al., Strength imbalances and prevention of hamstring in professional soccer players: A prospective study, Am J Sports Med, 36, pp. 1469-1475, (2008); Gur H., Akova B., Punduk Z., Et al., Effects of age on the reciprocal peak torque ratios during knee muscle contractions in elite soccer players, Scand J Med Sc Sports, 9, pp. 81-87, (1999); Jonhagen S., Nemeth G., Eriksson E., Hamstring injuries in sprinters: The role of concentric and eccentric hamstring muscle strength and flexibility, Am J Sports Med, 22, pp. 262-266, (1994); Lehance C., Binet J., Bury T., Et al., Muscular strength, functional performances and injury risk in professional and junior elite soccer players, Scand J Med Sci Sports, (2008); Russel K.W., Quinney H.A., Hazlett C.B., Et al., Knee muscle strength in elite male gymnasts, J Orthop Sports Phys Ther, 22, pp. 10-17, (1995); Zakas A., Madroukas K., Vamvakoudis E., Et al., Peak torque of quadriceps and hamstring muscle in basketball and soccer divisions, J Sports Med Phys Fitness, 35, pp. 199-205, (1995)","P.-L. Bernard; UFR APS, EA 2991, laboratoire efficience et déficience motrice, 34090 Montpellier, 700, avenue du Pic-Saint-Loup, France; email: pierrick.bernard@univ-montp1.fr","","","07651597","","SCSPE","","French","Sci. Sports","Article","Final","","Scopus","2-s2.0-67651124830" "Street S.B.; Kaminski T.","Street, Scott Benson (57221414956); Kaminski, Thomas (7005758157)","57221414956; 7005758157","Does the FIFA 11+ program prevent hamstring injuries in college-aged male soccer players? A critically appraised topic","2021","Journal of Sport Rehabilitation","30","1","","158","160","2","2","10.1123/jsr.2019-0390","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85099096486&doi=10.1123%2fjsr.2019-0390&partnerID=40&md5=87884badd1d8903c3d850b92750874c0","West Virginia Wesleyan College, Buckhannon, WV, United States; University of Delaware, Newark, DE, United States","Street S.B., West Virginia Wesleyan College, Buckhannon, WV, United States; Kaminski T., University of Delaware, Newark, DE, United States","Clinical Scenario: Hamstring injuries are the most prevalent lower-extremity injury among soccer players. The Fédération Internationale de Football Association (FIFA) has addressed this issue by developing the FIFA 11+ program, which is focused on improving strength and decreasing the incidence of lower-extremity injuries in the sport. This critically appraised topic focuses on this program as well as one of its components, the Nordic hamstring exercise, in the prevention of hamstring injuries. Clinical Question: Does the FIFA 11+ program prevent hamstring injuries in college-aged male soccer players? Summary of Key Findings: Four studies were selected to be critically appraised. The PEDro checklist was used to score the articles on methodology and consistency. All 4 articles demonstrated support for the clinical question. Clinical Bottom Line: There is moderate evidence to support the use of the FIFA 11+ program and Nordic hamstring exercise as part of a college soccer team’s warm-up routine. Strength of Recommendation: Grade B evidence exists in support of incorporating the FIFA 11+ program to reduce the incidence of hamstring injuries in male college soccer players. © 2021 Human Kinetics, Inc.","Biomechanics; Intercollegiate; Lower extremity; Nordic hamstring exercise; Thigh","Athletic Injuries; Exercise Therapy; Hamstring Muscles; Humans; Male; Soccer; Universities; Warm-Up Exercise; hamstring muscle; human; injury; kinesiotherapy; male; procedures; soccer; sport injury; university; warm up","van der Horst N, Wouter Smits D, Petersen J, Goedhart E, Backx F., The preventive effect of the Nordic hamstring exercise on hamstring injuries in amateur soccer players: a randomized controlled trial, Br J Sports Med, 48, 7, pp. 609-610, (2014); Silvers-Granelli H, Mandelbaum B, Adeniji O, Et al., Efficacy of the FIFA 11+ injury prevention program in the collegiate male soccer player, Am J Sports Med, 43, 11, pp. 2628-2637, (2015); Petersen J, Thorborg K, Nielsen MB, Budtz-Jorgensen E, Holmich P., Preventive effect of eccentric training on acute hamstring injuries in men’s soccer: a cluster-randomized controlled trial, Am J Sports Med, 39, 11, pp. 2296-2303, (2011); Mjolsnes R, Arnason A, Osthagen T, Raastad T, Bahr R., A 10-week randomized trial comparing eccentric vs. concentric hamstring strength training in well-trained soccer players, Scand J Med Sci Sports, 14, 5, pp. 311-317, (2004); Grooms DR, Palmer T, Onate JA, Myer GD, Grindstaff T., Soccer-specific warm-up and lower extremity injury rates in collegiate male soccer players, J Athl Train, 48, 6, pp. 782-789, (2013)","S.B. Street; West Virginia Wesleyan College, Buckhannon, United States; email: street_s@wvwc.edu","","Human Kinetics Publishers Inc.","10566716","","JSRHE","32404534","English","J. Sport Rehabil.","Article","Final","","Scopus","2-s2.0-85099096486" "Wrona H.L.; Zerega R.; King V.G.; Reiter C.R.; Odum S.; Manifold D.; Latorre K.; Sell T.C.","Wrona, Hailey L. (57847569900); Zerega, Ryan (57220599116); King, Victoria G. (58199652400); Reiter, Charles R. (57848251000); Odum, Susan (6603225457); Manifold, Devon (58198570400); Latorre, Karyn (58199109300); Sell, Timothy C. (57140170900)","57847569900; 57220599116; 58199652400; 57848251000; 6603225457; 58198570400; 58199109300; 57140170900","Ability of Countermovement Jumps to Detect Bilateral Asymmetry in Hip and Knee Strength in Elite Youth Soccer Players","2023","Sports","11","4","77","","","","3","10.3390/sports11040077","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85153779192&doi=10.3390%2fsports11040077&partnerID=40&md5=135d7d0b1f755f0fd501ef3c0d9c64ab","Department of Biomedical Engineering, University of North Carolina Chapel Hill, Chapel Hill, 27514, NC, United States; Atrium Health Musculoskeletal Institute, Charlotte, 28207, NC, United States; Physical Therapy Division, Duke University School of Medicine, Durham, 27710, NC, United States; Charlotte Football Club, Charlotte, 28202, NC, United States","Wrona H.L., Department of Biomedical Engineering, University of North Carolina Chapel Hill, Chapel Hill, 27514, NC, United States; Zerega R., Atrium Health Musculoskeletal Institute, Charlotte, 28207, NC, United States; King V.G., Physical Therapy Division, Duke University School of Medicine, Durham, 27710, NC, United States; Reiter C.R., Atrium Health Musculoskeletal Institute, Charlotte, 28207, NC, United States; Odum S., Atrium Health Musculoskeletal Institute, Charlotte, 28207, NC, United States; Manifold D., Charlotte Football Club, Charlotte, 28202, NC, United States; Latorre K., Charlotte Football Club, Charlotte, 28202, NC, United States; Sell T.C., Atrium Health Musculoskeletal Institute, Charlotte, 28207, NC, United States","Clinicians frequently assess asymmetry in strength, flexibility, and performance characteristics as a method of screening for potential musculoskeletal injury. The identification of asymmetry in countermovement jumps may be an ideal method to reveal asymmetry in other lower extremity characteristics such as strength that otherwise may require additional testing, potentially reducing the time and burden on both the athlete and clinicians. The present study aims to examine the ability of asymmetry in both the single-leg and two-leg countermovement jump tests to accurately detect hip abduction, hip adduction, and eccentric hamstring strength asymmetry. Fifty-eight young male elite soccer players from the same professional academy performed a full battery of functional performance tests which included an assessment of hip adductor and abductor strength profiles, eccentric hamstring strength profiles, and neuromuscular performance and asymmetries during countermovement jumps. Bilateral variables attained from both the single-leg and two-leg countermovement jump tests included concentric impulse (Ns), eccentric mean force (N), and concentric mean force (N) computed by the VALD ForceDecks software. Average maximal force (N) was calculated bilaterally for the strength assessments. Asymmetry was calculated for each variable using 100 × |(right leg − left leg)/(right leg)| and grouped into three categories: 0 to <10%, 10% to <20%, and 20% or greater. Analyses were performed for the two higher asymmetry groups. The accuracy to detect strength asymmetry was assessed as the sensitivity, specificity, and predictive values for positive and negative tests. The outcomes from the accuracy assessments suggest that the single-leg countermovement jump concentric impulse variable at the 20% threshold is indicative of a youth male soccer player having hip adduction strength asymmetry while also demonstrating more accuracy and applicability than the two-leg countermovement jump concentric impulse variable. © 2023 by the authors.","biomechanics; football; injury prevention; risk factor; team sport","","Watson A., Mjaanes J.M., LaBella C.R., Brooks M.A., Canty G., Diamond A.B., Hennrikus W., Logan K., Moffatt K., Nemeth B.A., Et al., Soccer Injuries in Children and Adolescents, Pediatrics, 144, (2019); Metzl J.D., Micheli L.J., Youth soccer: An epidemiologic perspective, Clin. Sports Med, 17, pp. 663-673, (1998); Darrow C.J., Collins C.L., Yard E.E., Comstock R.D., Epidemiology of Severe Injuries among United States High School Athletes, Am. J. Sports Med, 37, pp. 1798-1805, (2009); Tirabassi J., Brou L., Khodaee M., Lefort R., Fields S.K., Comstock R.D., Epidemiology of High School Sports-Related Injuries Resulting in Medical Disqualification: 2005–2006 Through 2013–2014 Academic Years, Am. J. Sports Med, 44, pp. 2925-2932, (2016); Pfirrmann D., Herbst M., Ingelfinger P., Simon P., Tug S., Analysis of Injury Incidences in Male Professional Adult and Elite Youth Soccer Players: A Systematic Review, J. Athl. Train, 51, pp. 410-424, (2016); Le Gall F., Carling C., Reilly T., Vandewalle H., Church J., Rochcongar P., Incidence of Injuries in Elite French Youth Soccer Players, Am. J. Sports Med, 34, pp. 928-938, (2006); McMahon J.J., Rej S.J.E., Comfort P., Sex Differences in Countermovement Jump Phase Characteristics, Sports, 5, (2017); Donahue P.T., Wilson S.J., Williams C.C., Hill C.M., Garner J.C., Comparison of Countermovement and Squat Jumps Performance in Recreationally Trained Males, Int. J. Exerc. Sci, 14, pp. 462-472, (2021); Raya-Gonzalez J., Clemente F.M., Castillo D., Analyzing the Magnitude of Interlimb Asymmetries in Young Female Soccer Players: A Preliminary Study, Int. J. Environ. Res. Public Health, 18, (2021); Markovic G., Sarabon N., Pausic J., Hadzic V., Adductor Muscles Strength and Strength Asymmetry as Risk Factors for Groin Injuries among Professional Soccer Players: A Prospective Study, Int. J. Environ. Res. Public Health, 17, (2020); Kawaguchi K., Taketomi S., Mizutani Y., Inui H., Yamagami R., Kono K., Takagi K., Kage T., Sameshima S., Tanaka S., Et al., Hip Abductor Muscle Strength Deficit as a Risk Factor for Inversion Ankle Sprain in Male College Soccer Players: A Prospective Cohort Study, Orthop. J. Sports Med, 9, (2021); Dallinga J.M., Benjaminse A., Lemmink K.A.P.M., Which Screening Tools Can Predict Injury to the Lower Extremities in Team Sports?, Sports Med, 42, pp. 791-815, (2012); Dauty M., Prediction of hamstring injury in professional soccer players by isokinetic measurements, Muscle Ligaments Tendons J, 6, pp. 116-123, (2016); Teixeira R.M., Dellagrana R.A., Priego-Quesada J.I., Machado J.C.B., Da Silva J.F., Dos Reis T.M.P., Rossato M., Muscular Strength Imbalances Are Not Associated with Skin Temperature Asymmetries in Soccer Players, Life, 10, (2020); Madruga-Parera M., Bishop C., Beato M., Fort-Vanmeerhaeghe A., Gonzalo-Skok O., Romero-Rodriguez D., Relationship Between Interlimb Asymmetries and Speed and Change of Direction Speed in Youth Handball Players, J. Strength Cond. Res, 35, pp. 3482-3490, (2021); Fort-Vanmeerhaeghe A., Bishop C., Busca B., Aguilera-Castells J., Vicens-Bordas J., Gonzalo-Skok O., Inter-limb asymmetries are associated with decrements in physical performance in youth elite team sports athletes, PLoS ONE, 15, (2020); Madruga-Parera M., Bishop C., Fort-Vanmeerhaeghe A., Beltran-Valls M.R., Skok O.G., Romero-Rodriguez D., Interlimb Asymmetries in Youth Tennis Players: Relationships with Performance, J. Strength Cond. Res, 34, pp. 2815-2823, (2020); Bishop C., Read P., McCubbine J., Turner A., Vertical and Horizontal Asymmetries Are Related to Slower Sprinting and Jump Performance in Elite Youth Female Soccer Players, J. Strength Cond. Res, 35, pp. 56-63, (2021); Fort-Vanmeerhaeghe A., Mila-Villarroel R., Pujol-Marzo M., Arboix-Alio J., Bishop C., Higher Vertical Jumping Asymmetries and Lower Physical Performance are Indicators of Increased Injury Incidence in Youth Team-Sport Athletes, J. Strength Cond. 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Otolaryngol, 41, (2020); Haims A.H., Wang A., Yoo B.J., Porrino J., Negative predictive value of CT for occult fractures of the hip and pelvis with imaging follow-up, Emerg. Radiol, 28, pp. 259-264, (2020); Fort-Vanmeerhaeghe A., Bishop C., Busca B., Vicens-Bordas J., Arboix-Alio J., Seasonal variation of inter-limb jumping asymmetries in youth team-sport athletes, J. Sports Sci, 39, pp. 2850-2858, (2021); Bishop C., Read P., Chavda S., Jarvis P., Brazier J., Bromley T., Turner A., Magnitude or Direction? Seasonal Variation of Interlimb Asymmetry in Elite Academy Soccer Players, J. Strength Cond. Res, 36, pp. 1031-1037, (2020); Garcia-Garcia O., Molina-Cardenas A., Alvarez-Yates T., Iglesias-Caamano M., Serrano-Gomez V., Individualized Analysis of Lateral Asymmetry Using Hip-Knee Angular Measures in Soccer Players: A New Methodological Perspective of Assessment for Lower Limb Asymmetry, Int. J. Environ. Res. Public Health, 19, (2022)","H.L. Wrona; Department of Biomedical Engineering, University of North Carolina Chapel Hill, Chapel Hill, 27514, United States; email: haileywrona00@gmail.com","","MDPI","20754663","","","","English","Sports","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85153779192" "Li X.; Li C.; Cui Y.; Wong D.P.","Li, Xueliang (57217236041); Li, Chunman (57217232328); Cui, Yixiong (57200855663); Wong, Del P. (35115670400)","57217236041; 57217232328; 57200855663; 35115670400","Acute kinematics and kinetics changes to wearable resistance during change of direction among soccer players","2021","Research in Sports Medicine","29","2","","155","169","14","3","10.1080/15438627.2020.1770761","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086868288&doi=10.1080%2f15438627.2020.1770761&partnerID=40&md5=1761938ab627035aa59a43cd12b6433e","China Football College, Beijing Sport University, Beijing, China; AI Sports Engineering Lab, School of Sports Engineering, Beijing Sport University, Beijing, China; Titi Sport Technology, Shenzhen, China; School of Nursing & Health Studies, Open University of Hong Kong, Hong Kong","Li X., China Football College, Beijing Sport University, Beijing, China; Li C., China Football College, Beijing Sport University, Beijing, China; Cui Y., AI Sports Engineering Lab, School of Sports Engineering, Beijing Sport University, Beijing, China; Wong D.P., Titi Sport Technology, Shenzhen, China, School of Nursing & Health Studies, Open University of Hong Kong, Hong Kong","This study determined the acute changes in kinematics and kinetics when an additional load equivalent to 5% body mass was attached to the torso during change of direction (COD). In this within-subject repeated measures study, 14 male soccer players (age: 18.29 ± 0.32 years) volunteered to participate. Subjects performed COD under two conditions in randomized order: (1) no WR, and (2) with WR. No significant differences between the loaded and unloaded conditions in actual COD angle, approach speed, braking time, propulsive time, contact time, COD completion time (all p > 0.05, ES = 0.05–0.11), and all measured kinematic parameters (all p > 0.05, ES = 0–0.18). Nonetheless, ankle plantar/dorsi flexion ROM had possibly small increase in the loaded condition (ES = 0.24). Kinetics analysis has shown that the loaded condition was likely to have small increase in relative peak vertical propulsive ground reaction force (GRF, p = 0.11, ES = 0.41), and possible small increases in relative peak braking GRF (vertical: p = 0.21, ES = 0.42; total: p = 0.22, ES = 0.38), relative peak total propulsive GRF (p = 0.24, ES = 0.26), and relative braking impulse (horizontal, vertical, and total; p = 0.27–0.41, ES = 0.26–0.28). WR did not significantly change the acute movement techniques, meanwhile induced small increases in important kinetic stimuli for potential adaptation in COD. © 2020 Informa UK Limited, trading as Taylor & Francis Group.","biomechanics; football; motion analysis; turning; Weighted vest","Adolescent; Ankle; Athletic Performance; Biomechanical Phenomena; Humans; Kinetics; Male; Motor Skills; Range of Motion, Articular; Resistance Training; Soccer; Time and Motion Studies; Weight-Bearing; adult; ankle; article; biomechanics; contact time; controlled study; football; ground reaction force; human; human experiment; kinematics; kinetics; male; motion; randomized controlled trial; soccer player; trunk; young adult; adolescent; athletic performance; biomechanics; devices; joint characteristics and functions; motor performance; physiology; procedures; resistance training; soccer; task performance; weight bearing","Alcaraz P., Palao J., Elvira J., Linthorne N., Effects of three types of resisted sprint training devices on the kinematics of sprinting at maximum velocity, Journal of Strength and Conditioning Research, 22, 3, pp. 890-897, (2008); 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Wong; Titi Sport Technology, Shenzhen, Shenzhen, China; email: delwong@alumni.cuhk.net","","Bellwether Publishing, Ltd.","15438627","","RSMEC","32491924","English","Res. Sports Med.","Article","Final","","Scopus","2-s2.0-85086868288" "Chia L.; Myer G.D.; Hewett T.E.; Mckay M.J.; Sullivan J.; Ford K.R.; Pappas E.","Chia, Lionel (57218718421); Myer, Gregory D. (6701852696); Hewett, Timothy E. (7005201943); Mckay, Marnee J. (56529028000); Sullivan, Justin (56468533800); Ford, Kevin R. (7102539333); Pappas, Evangelos (11140568100)","57218718421; 6701852696; 7005201943; 56529028000; 56468533800; 7102539333; 11140568100","Do Cutting Kinematics Change as Boys Mature? A Longitudinal Cohort Study of High-School Athletes","2023","Clinical Journal of Sport Medicine","33","2","","E8","E13","5","3","10.1097/JSM.0000000000001095","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85149841003&doi=10.1097%2fJSM.0000000000001095&partnerID=40&md5=fe7060ea8ebf27c00802840a0bda84cc","Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia; Cleveland Guardians Baseball Company, Cleveland, OH, United States; Emory Sport Performance and Research Center, Flowery Branch, GA, United States; Emory Sports Medicine Center, Atlanta, GA, United States; Department of Orthopaedics, Emory University, School of Medicine, Atlanta, GA, United States; The Micheli Center for Sports Injury Prevention, Waltham, MA, United States; Hewett Global Consulting Minneapolis, Rochester, MN, United States; The Rocky Mountain Consortium for Sports Research, Edwards, CO, United States; Department of Physical Therapy, Congdon School of Health Sciences, High Point University, High Point, NC, United States; The University of Wollongong, School of Medicine, Illawarra Health and Medical Research Institute, NSW, Australia","Chia L., Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia, Cleveland Guardians Baseball Company, Cleveland, OH, United States; Myer G.D., Emory Sport Performance and Research Center, Flowery Branch, GA, United States, Emory Sports Medicine Center, Atlanta, GA, United States, Department of Orthopaedics, Emory University, School of Medicine, Atlanta, GA, United States, The Micheli Center for Sports Injury Prevention, Waltham, MA, United States; Hewett T.E., Hewett Global Consulting Minneapolis, Rochester, MN, United States, The Rocky Mountain Consortium for Sports Research, Edwards, CO, United States; Mckay M.J., Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia; Sullivan J., Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia; Ford K.R., Department of Physical Therapy, Congdon School of Health Sciences, High Point University, High Point, NC, United States; Pappas E., Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia, The University of Wollongong, School of Medicine, Illawarra Health and Medical Research Institute, NSW, Australia","Objective:Examine longitudinal changes in trunk, hip, and knee kinematics in maturing boys during an unanticipated cutting task.Design:Prospective cohort study.Setting:Biomechanical laboratory.Participants:Forty-two high-school male basketball, volleyball, and soccer athletes.Assessment of Risk Factors:Trunk, hip, and knee range-of-motion (RoM), peak angles, and angles at initial contact during an unanticipated 45 degrees sidestep cutting task were estimated using laboratory-based three-dimensional optoelectronic motion capture. Maturation was classified using a modified Pubertal Maturational Observational Scale (PMOS) into prepubertal, midpubertal, or postpubertal stages.Main Outcome Measures:Trunk total RoM in frontal, sagittal, and transverse planes; peak trunk flexion, right lateral flexion and right rotation angles; hip total RoM in frontal, sagittal, and transverse planes; hip flexion angle at initial contact; peak hip flexion and adduction angles; knee total RoM in frontal, sagittal, and transverse planes; knee flexion angle at initial contact; peak knee flexion and abduction angles.Results:As boys matured, there was a decrease in hip sagittal-plane RoM (49.02 degrees to 43.45 degrees, Benjamini-Hochberg adjusted P = 0.027), hip flexion at initial contact (29.33 degrees to 23.08 degrees, P = 0.018), and peak hip flexion (38.66 degrees to 32.71 degrees, P = 0.046), and an increase in trunk contralateral rotation (17.47 degrees to 25.05 degrees, P = 0.027).Conclusions:Maturing male athletes adopted a more erect cutting strategy that is associated with greater knee joint loading. Knee kinematic changes that increase knee joint loading were not observed in this cohort. © 2022 Wolters Kluwer Health, Inc.","biomechanics; change of direction; knee injuries; puberty; sport","Anterior Cruciate Ligament Injuries; Athletes; Biomechanical Phenomena; Cohort Studies; Hip Joint; Humans; Knee Joint; Longitudinal Studies; Male; Prospective Studies; Range of Motion, Articular; abduction; adduction; adolescent; adulthood; angle of trunk rotation; Article; athlete; basketball; biomechanics; child; clinical assessment; cohort analysis; controlled study; high school; hip; hip flexion angle; human; human experiment; kinematics; knee; knee flexion angle; knee function; longitudinal study; male; maturation; motion capture; outcome assessment; prepuberty; prospective study; pubertal maturational observational scale; puberty; range of motion; risk assessment; risk factor; rotation; school child; soccer; trunk; volleyball; anterior cruciate ligament injury; athlete; joint characteristics and functions; knee","Sanders T.L., Maradit Kremers H., Bryan A.J., Et al., Incidence of anterior cruciate ligament tears and reconstruction: A 21-year population-based study, Am J Sports Med, 44, pp. 1502-1507, (2016); Quatman C.E., Ford K.R., Myer G.D., Et al., Maturation leads to gender differences in landing force and vertical jump performance: A longitudinal study, Am J Sports Med, 34, pp. 806-813, (2006); Hewett T.E., Myer G.D., Ford K.R., Decrease in neuromuscular control about the knee with maturation in female athletes, J Bone Joint Surg Am, 86, pp. 1601-1608, (2004); Della Villa F., Buckthorpe M., Grassi A., Et al., Systematic video analysis of ACL injuries in professional male football (soccer): Injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, Br J Sports Med, 54, pp. 1423-1432, (2020); Carlson V.R., Sheehan F.T., Boden B.P., Video analysis of anterior cruciate ligament (ACL) injuries: A systematic review, Jbjs Rev, 4, (2016); Poulsen E., Goncalves G.H., Bricca A., Et al., Knee osteoarthritis risk is increased 4-6 fold after knee injury - A systematic review and meta-analysis, Br J Sports Med, 53, pp. 1454-1463, (2019); Eggerding V., Reijman M., Meuffels D.E., Et al., ACL reconstruction for all is not cost-effective after acute ACL rupture, Br J Sports Med, 56, pp. 24-28, (2022); Ford K.R., Shapiro R., Myer G.D., Et al., Longitudinal sex differences during landing in knee abduction in young athletes, Med Sci Sports Exerc, 42, pp. 1923-1931, (2010); Holden S., Boreham C., Delahunt E., Sex differences in landing biomechanics and postural stability during adolescence: A systematic review with meta-analyses, Sports Med, 46, pp. 241-253, (2016); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Chia L., Myer G.D., Hewett T.E., Et al., When puberty strikes: Longitudinal changes in cutting kinematics in 172 high-school female athletes, J Sci Med Sport, 24, pp. 1290-1295, (2021); Pappas E., Shiyko M.P., Ford K.R., Et al., Biomechanical deficit profiles associated with ACL injury risk in female athletes, Med Sci Sports Exerc, 48, pp. 107-113, (2016); Ford K.R., Myer G.D., Hewett T.E., Reliability of landing 3D motion analysis: Implications for longitudinal analyses, Med Sci Sports Exerc, 39, pp. 2021-2028, (2007); Taylor J.B., Nguyen A.-D., Shultz S.J., Et al., Hip biomechanics differ in responders and non-responders to an ACL injury prevention program, Knee Surg Sports Traumatol Arthrosc, 28, pp. 1236-1245, (2020); Davies P.L., Rose J.D., Assessment of cognitive development in adolescents by means of neuropsychological tasks, Developmental Neuropsychol, 15, pp. 227-248, (1999); Schlossberger N.M., Turner R.A., Irwin C.E., Validity of self-report of pubertal maturation in early adolescents, J Adolesc Health, 13, pp. 109-113, (1992); Davies P.L., Rose J.D., Motor skills of typically developing adolescents: Awkwardness or improvement?, Phys Occup Ther Pediatr, 20, pp. 19-42, (2000); Ford K.R., Myer G.D., Toms H.E., Et al., Gender differences in the kinematics of unanticipated cutting in young athletes, Med Sci Sports Exerc, 37, pp. 124-129, (2005); Dos'Santos T., Bishop C., Thomas C., Et al., The effect of limb dominance on change of direction biomechanics: A systematic review of its importance for injury risk, Phys Ther Sport, 37, pp. 179-189, (2019); Fox A.S., Change-of-direction biomechanics: Is what's best for anterior cruciate ligament injury prevention also best for performance?, Sports Med, 48, pp. 1799-1807, (2018); Chia L., De Oliveira Silva D., McKay M.J., Et al., Limited support for trunk and hip deficits as risk factors for athletic knee injuries: A systematic review with meta-analysis and best-evidence synthesis, J Ortho Sports Phys Ther, 50, pp. 476-489, (2020); Beunckens C., Molenberghs G., Kenward M.G., Direct likelihood analysis versus simple forms of imputation for missing data in randomized clinical trials, Clin Trials, 2, pp. 379-386, (2005); Verbeke G., Verbeke G., Molenberghs G., Linear mixed models for longitudinal data, Linear Mixed Models in Practice, pp. 63-153, (1997); Ng L., Rosalie S.M., Sherry D., Et al., A biomechanical comparison in the lower limb and lumbar spine between a hit and drag flick in field hockey, J Sports Sci, 36, pp. 2210-2216, (2018); Benjamini Y., Hochberg Y., Controlling the false discovery rate: A practical and powerful approach to multiple testing, J R Stat Soc ser B (Methodol), 57, pp. 289-300, (1995); Dempsey A.R., Lloyd D.G., Elliott B.C., Et al., Changing sidestep cutting technique reduces knee valgus loading, Am J Sports Med, 37, pp. 2194-2200, (2009); Dos'Santos T., Thomas C., McBurnie A., Et al., Biomechanical determinants of performance and injury risk during cutting: A performance-injury conflict?, Sports Med, 51, pp. 1983-1998, (2021); Brault S., Bideau B., Craig C., Et al., Balancing deceit and disguise: How to successfully fool the defender in a 1 vs. 1 situation in rugby, Hum Movement Sci, 29, pp. 412-425, (2010); Kristianslund E., Faul O., Bahr R., Et al., Sidestep cutting technique and knee abduction loading: Implications for ACL prevention exercises, Br J Sports Med, 48, pp. 779-783, (2014); Mizuno K., Andrish J.T., Van Den Bogert A.J., Et al., Gender dimorphic ACL strain in response to combined dynamic 3D knee joint loading: Implications for ACL injury risk, The Knee, 16, pp. 432-440, (2009); Taylor K.A., Terry M.E., Utturkar G.M., Spritzer C.E., Queen R.M., Irribarra L.A., Garrett W.E., DeFrate L.E., Measurement of in vivo anterior cruciate ligament strain during dynamic jump landing, J Biomech, 44, pp. 365-371, (2011); Dempsey A.R., Lloyd D.G., Elliott B.C., Et al., The effect of technique change on knee loads during sidestep cutting, Med Sci Sports Exerc, 39, pp. 1765-1773, (2007); Stuelcken M.C., Mellifont D.B., Gorman A.D., Et al., Mechanisms of anterior cruciate ligament injuries in elite women's netball: A systematic video analysis, J Sports Sci, 34, pp. 1516-1522, (2016); Song Y., Li L., Hughes G., Et al., Trunk motion and anterior cruciate ligament injuries: A narrative review of injury videos and controlled jump-landing and cutting tasks, Sports Biomech, pp. 1-19, (2021); Wild C.Y., Steele J.R., Munro B.J., Why do girls sustain more anterior cruciate ligament injuries than boys?, Sports Med, 42, pp. 733-749, (2012); Almonroeder T.G., Garcia E., Kurt M., The effects of anticipation on the mechanics of the knee during single-leg cutting tasks: A systematic review, Int J Sports Phys Ther, 10, pp. 918-928, (2015); Chia L., Andersen J.T., McKay M.J., Et al., Evaluating the validity and reliability of inertial measurement units for determining knee and trunk kinematics during athletic landing and cutting movements, J Electromyogr Kinesiol, 60, (2021)","L. Chia; D18-Susan Wakil Health Building, The University of Sydney, Sydney, Western Ave, 2006, Australia; email: lclionelchia@gmail.com","","Lippincott Williams and Wilkins","1050642X","","CJSME","36367778","English","Clin. J. Sport Med.","Article","Final","","Scopus","2-s2.0-85149841003" "Zhang L.; Li H.; Garrett W.E.; Liu H.; Yu B.","Zhang, Liwen (57205669807); Li, Hanjun (55578356300); Garrett, William E (7102162248); Liu, Hui (27171795500); Yu, Bing (35301366400)","57205669807; 55578356300; 7102162248; 27171795500; 35301366400","Hamstring muscle-tendon unit lengthening and activation in instep and cut-off kicking","2020","Journal of Biomechanics","99","","109482","","","","3","10.1016/j.jbiomech.2019.109482","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85075375799&doi=10.1016%2fj.jbiomech.2019.109482&partnerID=40&md5=be8501f6466f77f143e7788727ce07ed","Biomechanics Laboratory, School of Sport Science, Beijing Sport University, Beijing, China; Duke University Sports Medicine Center, Durham, NC, United States; China Institute of Sport and Health Science, Beijing Sport University, Beijing, China; Center for Human Movement Science, Division of Physical Therapy, School of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States","Zhang L., Biomechanics Laboratory, School of Sport Science, Beijing Sport University, Beijing, China; Li H., Biomechanics Laboratory, School of Sport Science, Beijing Sport University, Beijing, China; Garrett W.E., Duke University Sports Medicine Center, Durham, NC, United States; Liu H., China Institute of Sport and Health Science, Beijing Sport University, Beijing, China; Yu B., Center for Human Movement Science, Division of Physical Therapy, School of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States","Hamstring muscle strain injury is one of the most common injuries in sports involving sprinting and kicking. Studies examining hamstring kinematics and activations are rich for sprinting but lacking for kicking. The purpose of this study was to examine kinematics and activations of hamstring muscles in instep and cut-off kicking tasks frequently performed in soccer. Videographic and electromyographic (EMG) data were collected for 11 male soccer-majored college students performing the two kicking tasks. Peak hamstring muscle-tendon unit lengths, elongation velocities, and maximum linear envelop EMG data were identified and compared among hamstring muscles and between kicking tasks. Hamstring muscles exhibited activated elongations before and after the contact of the kicking foot with the ball. The muscle-tendon unit lengths peaked in the follow-through phase. The peak elongation velocity of the semimembranosus was significantly greater than that of the semitendinosus and biceps femoris (p = 0.001). The maximum linear envelop EMG of the biceps femoris was significantly greater than that of the semimembranosus (p = 0.026). The potential for hamstring injury exists in the follow-through phase of each kicking task. The increased hamstring muscle-tendon unit elongation velocities in kicking tasks may explain the more severe hamstring injuries in kicking compared to sprinting. © 2019","Hamstring injury; Injury mechanism; Kicking; Muscle strain injury; Risk factors","Adult; Biomechanical Phenomena; Hamstring Muscles; Hamstring Tendons; Humans; Male; Mechanical Phenomena; Movement; Soccer; Young Adult; Chemical activation; Elongation; Health risks; Kinematics; Muscle; Sports; Students; Hamstring injury; Injury mechanisms; Kicking; Muscle strain; Risk factors; adult; Article; biceps brachii muscle; biceps femoris muscle; college student; controlled study; cut off kicking; electromyography; follow up; hamstring tendon; human; human experiment; instep kicking; kinematics; male; muscle contraction; muscle length; muscle strain; physical activity; priority journal; semimembranosus muscle; semitendinous muscle; soccer player; tendon injury; young adult; biomechanics; hamstring muscle; hamstring tendon; injury; mechanics; movement (physiology); physiology; soccer; Tendons","Askling C.M., Tengvar M., Saartok T., Thorstensson A., Acute first-time hamstring strains during high-speed running a longitudinal study including clinical and magnetic resonance imaging findings, Am. J. Sports Med., 35, pp. 197-206, (2007); Barfield W.R., The biomechanics of kicking in soccer, Clin. Sports Med., 17, (1998); Bell A.L., Pedersen D.R., Brand R.A., A comparison of the accuracy of several hip center location prediction methods, J. Biomech., 23, pp. 617-621, (1990); Brooks S.V., Faulkner J.A., Severity of contraction-induced injury is affected by velocity only during stretches of large strain, J. Appl. Physiol., 91, pp. 661-666, (2001); Brooks J.H.M., Fuller C.W., Kemp S.P.T., Reddin D.B., Incidence, risk, and prevention of hamstring muscle injuries in professional rugby union, Am. J. Sports Med., 34, pp. 1297-1306, (2006); Ekstrand J., Hagglund M., Walden M., Epidemiology of muscle injuries in professional football (soccer), Am. J. Sports Med., 39, pp. 1226-1232, (2011); Feeley B.T., Kennelly S., Barnes R.P., Muller M.S., Kelly B.T., Rodeo S.A., Warren R.F., Epidemiology of National Football League training camp injuries from 1998 to 2007, Am. J. Sports Med., 36, pp. 1597-1603, (2008); Gabbe B.J., Finch C.F., Bennell K.L., Wajswelner H., Risk factors for hamstring injuries in community level Australian football, Br. J. Sports Med., 39, pp. 106-110, (2005); Garrett W.E., Safran M.R., Seaber A.V., Glisson R.R., Ribbeck B.M., Biomechanical comparison of stimulated and nonstimulated skeletal muscle pulled to failure, Am. J. Sports Med., 15, pp. 448-454, (1987); Hasselman C.T., Best T.M., Seaber A.V., Garrett W.E., A threshold and continuum of injury during active stretch of rabbit skeletal muscle, Am. J. Sports Med., 23, pp. 65-73, (1995); Henderson G., Barnes C.A., Portas M.D., Factors associated with increased propensity for hamstring injury in English Premier League soccer players, J. Sci. Med. Sport, 13, pp. 397-402, (2010); Hermens H.J., Freriks B., DisselhorstKlug C., Rau G., Development of recommendations for SEMG sensors and sensor placement procedures, J. Electromyogr. 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Sports Med., 36, pp. 163-168, (2015); Opar D.A., Williams M.D., Shield A.J., Hamstring strain injuries: factors that lead to injury and re-injury, Sports Medicine, 42, pp. 209-226, (2012); Orchard J.W., Intrinsic and extrinsic risk factors for muscle strains in Australian football, Am. J. Sports Med., 29, pp. 300-303, (2001); Pierynowski M.R., Analytic representation of muscle line of action and geometry, Three-Dimensional Analysis of Human Movement, (1995); Proske U., Morgan D.L., Brockett C.L., Percival P., Identifying athletes at risk of hamstring strains and how to protect them, Clin. Exp. Pharmacol. Physiol., 31, pp. 546-550, (2004); Schache A.G., Dorn T.W., Blanch P.D., Brown N.A.T., Pandy M.G., Mechanics of the human hamstring muscles during sprinting, Med. Sci. Sports Exerc., 44, pp. 647-658, (2012); Sharifnezhad A., Marzilger R., Arampatzis A., Effects of load magnitude, muscle length and velocity during eccentric chronic loading on the longitudinal growth of the vastus lateralis muscle, J. Exp. Biol., 217, pp. 2726-2733, (2014); Sinclair J., Side to side differences in hamstring muscle kinematics during maximal instep soccer kicking, Move. Sport Sci.-Sci. Motricité, pp. 85-92, (2016); Thelen D.G., Chumanov E.S., Hoerth D.M., Best T.M., Swanson S.C., Li L., Young M., Heiderscheit B.C., Hamstring muscle kinematics during treadmill sprinting, Med. Sci. Sports Exerc., 37, pp. 108-114, (2005); Valle X., Tol J.L., Hamilton B., Rodas G., Malliaras P., Malliaropoulos N., Rizo V., Moreno M., Jardi J., Hamstring muscle injuries, a rehabilitation protocol purpose, Asian J. Sports Med., 6, (2015); Verrall G.M., Kalairajah Y., Slavotinek J.P., Spriggins A.J., Assessment of player performance following return to sport after hamstring muscle strain injury, J. Sci. Med. Sport, 9, pp. 87-90, (2006); Wan X., Qu F., Garrett W.E., Liu H., Yu B., The effect of hamstring flexibility on peak hamstring muscle strain in sprinting, J. Sport Health Sci., 6, pp. 283-289, (2017); Wan X., Qu F., Garrett W.E., Liu H., Yu B., Relationships among hamstring muscle optimal length and hamstring flexibility and strength, J. Sport Health Sci., 6, pp. 275-282, (2017); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., The football association medical research programme: an audit of injuries in professional football–analysis of hamstring injuries, Br. J. Sports Med., 38, pp. 36-41, (2004); Wu G., Siegler S., Allard P., Kirtley C., Leardini A., Rosenbaum D., Whittle M., D'Lima D.D., Cristofolini L., Witte H., Schmid O., Stokes I., pp. 543-548; Yu B., Gabriel D., Noble L., An K.-N., Estimate of the optimum cutoff frequency for the butterworth low-pass digital filter, J. Appl. Biomech., 15, pp. 318-329, (1999); Yu B., Queen R.M., Abbey A.N., Liu Y., Moorman C.T., Garrett W.E., Hamstring muscle kinematics and activation during overground sprinting, J. Biomech., 41, pp. 3121-3126, (2008); Zajac F.E., Muscle and tendon: properties, models, scaling, and application to biomechanics and motor control, Crit. Rev. Biomed. Eng., 17, pp. 359-411, (1989)","H. Liu; China Institute of Sport and Health Science, Beijing Sport University, Beijing, 100084, China; email: liuhuibupe@163.com","","Elsevier Ltd","00219290","","JBMCB","31733820","English","J. Biomech.","Article","Final","","Scopus","2-s2.0-85075375799" "Ghasemi M.; Sigurðsson H.B.; Sveinsson Þ.; Briem K.","Ghasemi, Mohammadhossein (59075544600); Sigurðsson, Haraldur Björn (57526782600); Sveinsson, Þórarinn (55612339400); Briem, Kristín (16051954700)","59075544600; 57526782600; 55612339400; 16051954700","Boys demonstrate greater knee frontal moments than girls during the impact phase of cutting maneuvers, despite age-related increases in girls","2023","Knee Surgery, Sports Traumatology, Arthroscopy","31","5","","1833","1839","6","2","10.1007/s00167-023-07340-z","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85149260796&doi=10.1007%2fs00167-023-07340-z&partnerID=40&md5=b86e4d1da58b65736c3baec7f12eaef9","Department of Physical Therapy, University of Iceland, Reykjavík, Iceland; Research Centre of Movement Science, University of Iceland, Reykjavík, Iceland","Ghasemi M., Department of Physical Therapy, University of Iceland, Reykjavík, Iceland; Sigurðsson H.B., Department of Physical Therapy, University of Iceland, Reykjavík, Iceland, Research Centre of Movement Science, University of Iceland, Reykjavík, Iceland; Sveinsson Þ., Department of Physical Therapy, University of Iceland, Reykjavík, Iceland, Research Centre of Movement Science, University of Iceland, Reykjavík, Iceland; Briem K., Department of Physical Therapy, University of Iceland, Reykjavík, Iceland, Research Centre of Movement Science, University of Iceland, Reykjavík, Iceland","Purpose: Anterior cruciate ligament (ACL) injury rate is low among children, but increases during adolescence, especially in girls. Increases in the knee valgus moment within 70 ms of contact with the ground (KFM0-70) may explain the sex-specific increase in the risk of ACL injury. The purpose of the study was to investigate sex-dependent changes in the KFM0-70 from pre-adolescence to adolescence during a cutting maneuver (CM). Methods: Kinematic and kinetic data during the CM task, performed before and after physical exertion, were recorded using a motion capture system and a force plate. A total of 293 team handball and soccer players, aged 9–12 years, were recruited. A number of those who continued sports participation (n = 103) returned five years later to repeat the test procedure. Three mixed-model analysis of variance (ANOVA) for repeated measures tests were used to determine the effects of sex and age period on the KFM0-70 (1: with no adjustment, 2: adjusted for repeated measurements, and 3: additionally adjusted with hip and knee joint frontal plane kinematics). Results: Boys had significantly higher KFM0-70 than girls at both age periods (p < 0.01 for all models). Girls, not boys, demonstrated significantly increased KFM0-70 from pre-adolescence to adolescence. Importantly, this was fully explained by kinematic variables. Conclusion: Although the marked increase in KFM0-70 seen in girls may play a role in their risk of ACL rupture, the higher values demonstrated by boys during CM reflect the complexity of multifactorial biomechanical risk factor analysis. The role of kinematics in mediating the KFM0-70 provides means for modification of this risk factor, but as boys had higher joint moments, continued investigation into sex-dependent biomechanical risk factors is warranted. Level of evidence: II. © 2023, The Author(s).","Anterior cruciate ligament (ACL); Biomechanics; Maturity; Risk-factor; Sports tasks","Adolescent; Anterior Cruciate Ligament Injuries; Child; Female; Humans; Knee; Knee Injuries; Knee Joint; Lower Extremity; Male; adolescent; anterior cruciate ligament injury; child; complication; female; human; knee; knee injury; lower limb; male","Barber-Westin S.D., Noyes F.R., Galloway M., Jump-land characteristics and muscle strength development in young athletes: a gender comparison of 1140 athletes 9 to 17 years of age, Am J Sports Med, 34, pp. 375-384, (2006); Bates N.A., Myer G.D., Hale R.F., Schilaty N.D., Hewett T.E., Prospective frontal plane angles used to predict ACL strain and identify those at high risk for sports-related ACL injury, Orthop J Sport Med, 8, pp. 1-10, (2020); Bates N.A., Schilaty N.D., Nagelli C.V., Krych A.J., Hewett T.E., Validation of noncontact anterior cruciate ligament tears produced by a mechanical impact simulator against the clinical presentation of injury, Am J Sports Med, 46, pp. 2113-2121, (2018); Briem K., Jonsdottir K.V., Arnason A., Sveinsson Th., Effects of sex and fatigue on biomechanical measures during the drop-jump task in children, Orthop J Sport Med, 5, pp. 1-7, (2017); Camomilla V., Cereatti A., Cutti A.G., Fantozzi S., Stagni R., Vannozzi G., Methodological factors affecting joint moments estimation in clinical gait analysis: a systematic review, Biomed Eng Online, 16, pp. 1-27, (2017); Chandrashekar N., Mansouri H., Slauterbeck J., Hashemi J., Sex-based differences in the tensile properties of the human anterior cruciate ligament, J Biomech, 39, pp. 2943-2950, (2006); Chia L., Myer G.D., Hewett T.E., McKay M.J., Sullivan J., Ford K.R., Pappas E., When puberty strikes: longitudinal changes in cutting kinematics in 172 high-school female athletes, J Sci Med Sport, 24, pp. 1290-1295, (2021); Chia L., De Oliveira S.D., Whalan M., McKay M.J., Sullivan J., Fuller C.W., Pappas E., Non-contact anterior cruciate ligament injury epidemiology in team-ball sports: a systematic review with meta-analysis by sex, age, sport, participation level, and exposure type, Sport Med, 52, pp. 2447-2467, (2022); Cronstrom A., Creaby M.W., Ageberg E., Do knee abduction kinematics and kinetics predict future anterior cruciate ligament injury risk? A systematic review and meta-analysis of prospective studies, BMC Musculoskelet Disord, 21, pp. 1-11, (2020); DiCesare C.A., Montalvo A., Barber Foss K.D., Thomas S.M., Ford K.R., Hewett T.E., Jayanthi N.A., Stracciolini A., Bell D.R., Myer G.D., Lower extremity biomechanics are altered across maturation in sport-specialized female adolescent athletes, Front Pediatr, 7, pp. 1-11, (2019); Dix C., Arundale A., Silvers-Granelli H., Marmon A., Zarzycki R., Snyder-Mackler L., Biomechanical measures during two sport-specific tasks differentiate between soccer players who go on to anterior cruciate ligament injury and those who do not: a prospective cohort analysis, Int J Sports Phys Ther, 15, pp. 928-935, (2020); Ford K.R., Shapiro R., Myer G.D., Van Den Bogert A.J., Hewett T.E., Longitudinal sex differences during landing in knee abduction in young athletes, Med Sci Sports Exerc, 42, pp. 1923-1931, (2010); Gallucci M., (2023); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., Van den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Hewett T.E., Myer G.D., Kiefer A.W., Ford K.R., Longitudinal increases in knee abduction moments in females during adolescent growth, Med Sci Sports Exerc, 47, pp. 2579-2585, (2015); Hewett T.E., Torg J.S., Boden B.P., Video analysis of trunk and knee motion during non-contact anterior cruciate ligament injury in female athletes: lateral trunk and knee abduction motion are combined components of the injury mechanism, Br J Sports Med, 43, pp. 417-422, (2009); Hosseinzadeh S., Kiapour A.M., Sex differences in anatomic features linked to anterior cruciate ligament injuries during skeletal growth and maturation, Am J Sports Med, 48, pp. 2205-2212, (2020); Khayambashi K., Ghoddosi N., Straub R.K., Powers C.M., Hip muscle strength predicts noncontact anterior cruciate ligament injury in male and female athletes: a prospective study, Am J Sports Med, 44, pp. 355-361, (2016); Koga H., Muneta T., Bahr R., Engebretsen L., Krosshaug T., Video analysis of ACL injury mechanisms using a model-based image-matching technique, Sport Inj Prev, (2015); Koga H., Nakamae A., Shima Y., Iwasa J., Myklebust G., Engebretsen L., Bahr R., Krosshaug T., Mechanisms for noncontact anterior cruciate ligament injuries: knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, pp. 2218-2225, (2010); Kristianslund E., Faul O., Bahr R., Myklebust G., Krosshaug T., Sidestep cutting technique and knee abduction loading: implications for ACL prevention exercises, Br J Sports Med, 48, pp. 779-783, (2014); Krosshaug T., Steffen K., Kristianslund E., Nilstad A., Mok K.-M., Myklebust G., Andersen T.E., Holme I., Engebretsen L., Bahr R., The vertical drop jump is a poor screening test for ACL injuries in female elite soccer and handball players: a prospective cohort study of 710 athletes, Am J Sports Med, 44, pp. 874-883, (2016); Landry S.C., McKean K.A., Hubley-Kozey C.L., Stanish W.D., Deluzio K.J., Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated side-cut maneuver, Am J Sports Med, 35, pp. 1888-1900, (2007); Leppanen M., Pasanen K., Kujala U.M., Vasankari T., Kannus P., Ayramo S., Krosshaug T., Bahr R., Avela J., Perttunen J., Stiff landings are associated with increased ACL injury risk in young female basketball and floorball players, Am J Sports Med, 45, pp. 386-393, (2017); Myer G.D., Ford K.R., Divine J.G., Wall E.J., Kahanov L., Hewett T.E., Longitudinal assessment of noncontact anterior cruciate ligament injury risk factors during maturation in a female athlete: a case report, J Athl Train, 44, pp. 101-109, (2009); Nicholls M., Aspelund T., Ingvarsson T., Briem K., Nationwide study highlights a second peak in ACL tears for women in their early forties, Knee Surg Sport Traumatol Arthrosc, 26, pp. 648-654, (2018); Petrovic M., Sigurdsson H.B., Sigurdsson H.J., Sveinsson T., Briem K., Effect of sex on anterior cruciate ligament injury-related biomechanics during the cutting maneuver in preadolescent athletes, Orthop J Sport Med, 8, pp. 1-7, (2020); Quatman C.E., Ford K.R., Myer G.D., Hewett T.E., Maturation leads to gender differences in landing force and vertical jump performance: a longitudinal study, Am J Sports Med, 34, pp. 806-813, (2006); Sankey S.P., Azidin R.M.F.R., Robinson M.A., Malfait B., Deschamps K., Verschueren S., Staes F., Vanrenterghem J., How reliable are knee kinematics and kinetics during side-cutting manoeuvres?, Gait Posture, 41, pp. 905-911, (2015); Sheehan F.T., Sipprell W.H., Boden B.P., Dynamic sagittal plane trunk control during anterior cruciate ligament injury, Am J Sports Med, 40, pp. 1068-1074, (2012); Sigurdsson H.B., Karlsson J., Snyder-Mackler L., Briem K., Kinematics observed during ACL injury are associated with large early peak knee abduction moments during a change of direction task in healthy adolescents, J Orthop Res, 39, pp. 2281-2290, (2021); Sigurdsson H.B., Sveinsson Th., Briem K., Timing, not magnitude, of force may explain sex-dependent risk of ACL injury, Knee Surg Sport Traumatol Arthrosc, 26, pp. 2424-2429, (2018); Tranberg R., Saari T., Zugner R., Karrholm J., Simultaneous measurements of knee motion using an optical tracking system and radiostereometric analysis (RSA), Acta Orthop, 82, pp. 171-176, (2011); Webster K.E., Hewett T.E., Anterior cruciate ligament injury and knee osteoarthritis: an umbrella systematic review and meta-analysis, Clin J Sport Med, 32, pp. 145-152, (2022); Wiggins A.J., Grandhi R.K., Schneider D.K., Stanfield D., Webster K.E., Myer G.D., Risk of secondary injury in younger athletes after anterior cruciate ligament reconstruction: a systematic review and meta-analysis, Am J Sports Med, 44, pp. 1861-1876, (2016); Zebis M.K., Aagaard P., Andersen L.L., Holmich P., Clausen M.B., Brandt M., Husted R.S., Lauridsen H.B., Curtis D.J., Bencke J., First-time anterior cruciate ligament injury in adolescent female elite athletes: a prospective cohort study to identify modifiable risk factors, Knee Surg Sport Traumatol Arthrosc, 30, pp. 1341-1351, (2022)","K. Briem; Department of Physical Therapy, University of Iceland, Reykjavík, Iceland; email: kbriem@hi.is","","Springer Science and Business Media Deutschland GmbH","09422056","","","36810949","English","Knee Surg. Sports Traumatol. Arthroscopy","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85149260796" "Pritchard N.S.; Filben T.M.; Haja S.J.; Miller L.E.; Espeland M.A.; Stitzel J.D.; Urban J.E.","Pritchard, Nicholas Stewart (57219384344); Filben, Tanner M (57209830121); Haja, Sebastian J (58154492200); Miller, Logan E (55955121600); Espeland, Mark A (35236499700); Stitzel, Joel D (7003389866); Urban, Jillian E (36119491100)","57219384344; 57209830121; 58154492200; 55955121600; 35236499700; 7003389866; 36119491100","Head Impact Exposure in Youth Soccer: Comparing across Activity Types","2023","Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","","","","","","","2","10.1177/17543371231158669","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85150720993&doi=10.1177%2f17543371231158669&partnerID=40&md5=4c643715a5fa3ac4c960001140666aaf","Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States; School of Biomedical Engineering and Sciences, Virginia Tech, Wake Forest University, Winston-Salem, NC, United States; Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, NC, United States","Pritchard N.S., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech, Wake Forest University, Winston-Salem, NC, United States; Filben T.M., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech, Wake Forest University, Winston-Salem, NC, United States; Haja S.J., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States; Miller L.E., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States; Espeland M.A., Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, NC, United States; Stitzel J.D., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech, Wake Forest University, Winston-Salem, NC, United States; Urban J.E., Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States, School of Biomedical Engineering and Sciences, Virginia Tech, Wake Forest University, Winston-Salem, NC, United States","Soccer is a popular youth sport in the United States, but the effect of repetitive head impacts experienced during training on neurocognitive outcomes is not well understood. Modifying practice structure may be an avenue for reducing head impact exposure and concussion risk in soccer, but research has yet to characterize head impact exposure across common soccer activities. The objective of this study was to compare head impact exposure across common training activities in soccer. Eight female soccer players practicing on an age 15 and under (U15) club team participated in this study for two soccer seasons. Players wore an instrumented mouthpiece sensor during all practice and game sessions. Research personnel recorded duration of all activities performed by each player to characterize player-specific exposure time. Film review was performed to identify head contact events during each session and classify events according to the activity and drill the player was performing. Head impact exposure for each athlete was quantified in terms of peak kinematics and impact rate. Mixed effects models were used to compare peak kinematics and generalized linear models were used to compare impact rates across drills and activity type. Drill and activity type were associated with peak kinematics and impact rate. Technical training activities accounted for the second-highest exposure time and were associated with higher impact rates and lower mean kinematics than other activity types. Team interaction activities and game play were associated with the highest rotational kinematics but the lowest impact rates. Head impact exposure in female youth soccer is influenced by the type of activity in which the athlete is engaged. Interventions designed to reduce head impact frequency in female youth soccer can benefit from targeting technical training activities; whereas, interventions designed to reduce head impact magnitude should target team interaction and game activities. © IMechE 2023.","biomechanics; concussion; football; girls’ soccer; Head impact exposure; mouthpiece; practice structure; soccer; wearable sensors","Drills; Infill drilling; Kinematics; Sports; Concussion; Exposure-time; Girl’ soccer; Head impact; Head impact exposure; Mouthpiece; Practice structure; Team interaction; Technical training; Training activities; Wearable sensors","Langhorst P., Youth sports participation statistics and trends: EngageSports, (2016); Lincoln A.E., Caswell S.V., Almquist J.L., Et al., Trends in concussion incidence in high school sports: a prospective 11-year study, Am J Sports Med, 39, 5, pp. 958-963, (2011); Buzas D., Jacobson N.A., Morawa L.G., Concussions from 9 youth organized sports: results from NEISS hospitals over an 11-year time frame, 2002-2012, Orthop J Sports Med, 2, 4, (2014); O'Kane J.W., Spieker A., Levy M.R., Et al., Concussion among female middle-school soccer players, JAMA Pediatr, 168, 3, pp. 258-264, (2014); Kerr Z.Y., Chandran A., Nedimyer A.K., Et al., Concussion incidence and trends in 20 high school sports, Pediatrics, 144, 5, (2019); Bretzin A.C., Covassin T., Fox M.E., Et al., Sex differences in the clinical incidence of concussions, missed school days, and time loss in high school student-athletes: part 1, Am J Sports Med, 46, 9, pp. 2263-2269, (2018); Koerte I.K., Lin A.P., Muehlmann M., Et al., Altered neurochemistry in former professional soccer players without a history of concussion, J Neurotrauma, 32, 17, pp. 1287-1293, (2015); Talavage T.M., Nauman E.A., Breedlove E.L., Et al., Functionally-detected cognitive impairment in high school football players without clinically-diagnosed concussion, J Neurotrauma, 31, 4, pp. 327-338, (2014); Levitch C.F., Zimmerman M.E., Lubin N., Et al., Recent and long-term soccer heading exposure is differentially associated with neuropsychological function in amateur players, J Int Neuropsychol Soc, 24, 2, pp. 147-155, (2018); Levitch C.F., McConathey E., Aghvinian M., Et al., The impact of sleep on the relationship between soccer heading exposure and neuropsychological function in college-age soccer players, J Int Neuropsychol Soc, 26, pp. 633-644, (2020); Nowak M.K., Bevilacqua Z.W., Ejima K., Et al., Neuro-ophthalmologic response to repetitive subconcussive head impacts: a randomized clinical trial, JAMA Ophthalmol, 138, 4, pp. 350-357, (2020); Koerte I.K., Nichols E., Tripodis Y., Et al., Impaired cognitive performance in youth athletes exposed to repetitive head impacts, J Neurotrauma, 34, 16, pp. 2389-2395, (2017); Myer G.D., Barber Foss K., Thomas S., Et al., Altered brain microstructure in association with repetitive subconcussive head impacts and the potential protective effect of jugular vein compression: a longitudinal study of female soccer athletes, Br J Sports Med, 53, 24, pp. 1539-1551, (2019); (2020); Catenaccio E., Caccese J., Wakschlag N., Et al., Validation and calibration of HeadCount, a self-report measure for quantifying heading exposure in soccer players, Res Sports Med, 24, 4, pp. 416-425, (2016); Lipton M.L., Kim N., Zimmerman M.E., Et al., Soccer heading is associated with white matter microstructural and cognitive abnormalities, Radiology, 268, 3, pp. 850-857, (2013); Stewart W.F., Kim N., Ifrah C., Et al., Heading frequency is more strongly related to cognitive performance than unintentional head impacts in amateur soccer players, Front Neurol, 9, APR, (2018); Harriss A., Walton D.M., Dickey J.P., Direct player observation is needed to accurately quantify heading frequency in youth soccer, Res Sports Med, 26, 2, pp. 191-198, (2018); Miller L.E., Pinkerton E.K., Fabian K.C., Et al., Characterizing head impact exposure in youth female soccer with a custom-instrumented mouthpiece, Res Sports Med, 28, 1, pp. 55-71, (2020); Chrisman S.P.D., Ebel B.E., Stein E., Et al., Head impact exposure in youth soccer and variation by age and sex, Clin J Sport Med, 29, 1, pp. 3-10, (2019); Reynolds B.B., Patrie J., Henry E.J., Et al., Effects of sex and event type on head impact in collegiate soccer, Orthop J Sports Med, 5, 4, pp. 1-10, (2017); Lamond L.C., Caccese J.B., Buckley T.A., Et al., Linear acceleration in direct head contact across impact type, player position, and playing scenario in collegiate women’s soccer players, J Athl Train, 53, 2, pp. 115-121, (2018); McCuen E., Svaldi D., Breedlove K., Et al., Collegiate women’s soccer players suffer greater cumulative head impacts than their high school counterparts, J Biomech, 48, 13, pp. 3720-3723, (2015); Nevins D., Hildenbrand K., Vasavada A., Et al., In-game head impact exposure of male and female high school soccer players, Athl Train Sports Health Care, 11, 4, pp. 174-182, (2019); Beaudouin F., Gioftsidou A., Larsen M.N., Et al., The UEFA heading study: heading incidence in children’s and youth’ football (soccer) in eight European countries, Scand J Med Sci Sports, 30, 8, pp. 1506-1517, (2020); Kelley M.E., Kane J.M., Espeland M.A., Et al., Head impact exposure measured in a single youth football team during practice drills, J Neurosurg Pediatr, 20, 5, pp. 489-497, (2017); Kelley M.E., Espeland M.A., Flood W.C., Et al., Comparison of head impact exposure in practice drills among multiple youth football teams, J Neurosurg Pediatr, 23, 3, pp. 381-389, (2019); Rich A.M., Filben T.M., Miller L.E., Et al., Development, validation and pilot field deployment of a custom mouthpiece for head impact measurement, Ann Biomed Eng, 47, 10, pp. 2109-2121, (2019); Miller L.E., Kuo C., Wu L.C., Et al., Validation of a custom instrumented retainer form factor for measuring linear and angular head impact kinematics, J Biomech Eng, 140, 5, pp. 1-6, (2018); Tomblin B.T., Pritchard N.S., Filben T.M., Et al., Characterization of on-field head impact exposure in youth soccer, J Appl Biomech, 37, 1, pp. 36-42, (2021); Miller L.E., Urban J.E., Whelan V.M., Et al., An envelope of linear and rotational head motion during everyday activities, Biomech Model Mechanobiol, 19, 3, pp. 1003-1014, (2020); Miller L.E., Urban J.E., Kelley M.E., Et al., Evaluation of brain response during head impact in youth athletes using an anatomically accurate finite element model, J Neurotrauma, 36, pp. 1561-1570, (2019); 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Wang T., Kenny R., Wu L.C., Head impact sensor triggering bias introduced by linear acceleration thresholding, Ann Biomed Eng, 49, 12, pp. 3189-3199, (2021); Huber C.M., Patton D.A., Jain D., Et al., Variations in head impact rates in male and female high school soccer, Med Sci Sports Exerc, 53, 6, pp. 1245-1251, (2021); Kuo C., Wu L., Loza J., Et al., Comparison of video-based and sensor-based head impact exposure, PLoS One, 13, (2018); Saunders T.D., Le R.K., Breedlove K.M., Et al., Sex differences in mechanisms of head impacts in collegiate soccer athletes, Clin Biomech, 74, pp. 14-20, (2020); Caccese J.B., Buckley T.A., Tierney R.T., Et al., Sex and age differences in head acceleration during purposeful soccer heading, Res Sports Med, 26, 1, pp. 64-74, (2018); Huber C.M., Patton D.A., McDonald C.C., Et al., Sport- and gender-based differences in head impact exposure and mechanism in high school sports, Orthop J Sports Med, 9, 3, (2021)","N.S. Pritchard; Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, United States; email: npritcha@wakehealth.edu","","SAGE Publications Ltd","17543371","","","","English","Proc. Inst. Mech. Eng. Part P J. Sports Eng. Technol.","Article","Article in press","","Scopus","2-s2.0-85150720993" "Gioldasis A.; Theodorou A.; Bekris E.; Katis A.; Smirniotou A.","Gioldasis, Aristotelis (55547310600); Theodorou, Apostolos (7004348687); Bekris, Evangelos (57189907387); Katis, Athanasios (23135001400); Smirniotou, Athanasia (8699650600)","55547310600; 7004348687; 57189907387; 23135001400; 8699650600","Sprinting and dribbling differences in young soccer players: a kinematic approach","2022","Research in Sports Medicine","30","6","","603","615","12","3","10.1080/15438627.2021.1929220","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85106209199&doi=10.1080%2f15438627.2021.1929220&partnerID=40&md5=dd83c502e805315f96bda3db122db07d","School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece; Department of Games and Sports, Faculty of Physical Education and Sport Science, University of Athens, Athens, Greece; School of Physical Education and Sport Sciences of Serres, Aristotle University of Thessaloniki, Serres, Greece","Gioldasis A., School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece; Theodorou A., School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece; Bekris E., Department of Games and Sports, Faculty of Physical Education and Sport Science, University of Athens, Athens, Greece; Katis A., School of Physical Education and Sport Sciences of Serres, Aristotle University of Thessaloniki, Serres, Greece; Smirniotou A., School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece","Sprinting and dribbling a ball are considered essential for success in team sports, such as soccer. The purpose of the present study was to examine straight line (SL) and changes of direction (COD) sprinting and dribbling abilities after a standing and a flying starting position. Twelve amateur U12 male soccer players participated in the study. The participants were tested in four different sprinting conditions. The first consisted of 15 m SL sprinting and dribbling test by standing position; the second consisted of 15 m SL sprinting and dribbling test by flying start. The third condition consisted of 15 m COD sprinting and dribbling test by standing position, and the fourth condition consisted of 15 m COD sprinting and dribbling test by flying start. T-tests analysis indicated significant differences between SL sprinting and dribbling sprinting tests (P < 0.05) and between standing and flying start positions (P < 0.05). Step frequency was higher for sprinting tests (P < 0.05). Moreover, the results showed that step length was longer when players had a standing position (P < 0.05). 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Williams A.M., Ericsson K.A., Perceptual-cognitive expertise in sport: Some considerations when applying the expert performance approach, Human Movement Science, 24, 3, pp. 283-307, (2005); Yanci J., Reina R., Los Arcos A., Camara J., Effects of different contextual interference training programs on straight sprinting and agility performance of primary school students, Journal of Sports Science & Medicine, 12, 3, pp. 601-607, (2013); Zago M., Piovan A.G., Annoni I., Ciprandi D., Iaia F.M., Sforza C., Dribbling determinants in sub-elite youth soccer players, Journal of Sports Sciences, 34, 5, pp. 411-419, (2016)","A. Katis; Florina, Monastiriou Av. 114, P.C.: 53100, Greece; email: akatis@phed-sr.auth.gr","","Routledge","15438627","","RSMEC","33993825","English","Res. Sports Med.","Article","Final","","Scopus","2-s2.0-85106209199" "Becker S.; Berger J.; Ludwig O.; Günther D.; Kelm J.; Fröhlich M.","Becker, Stephan (57209469974); Berger, Joshua (57202190484); Ludwig, Oliver (23967098400); Günther, Daniel (57222065035); Kelm, Jens (7006747095); Fröhlich, Michael (7006415804)","57209469974; 57202190484; 23967098400; 57222065035; 7006747095; 7006415804","Heading in Soccer: Does Kinematics of the Head-Neck-Torso Alignment Influence Head Acceleration?","2021","Journal of Human Kinetics","77","1","","71","80","9","4","10.2478/hukin-2021-0012","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101277693&doi=10.2478%2fhukin-2021-0012&partnerID=40&md5=623d56535de222768c322d0141e5ed45","Department of Sport Science, Technische Universität Kaiserslautern, Kaiserslautern, Germany; Chirurgisch-Orthopädisches Zentrum, Illingen, Germany; Department of Sport Science, Technische Universität Kaiserslautern, Kaiserslautern, Germany","Becker S., Department of Sport Science, Technische Universität Kaiserslautern, Kaiserslautern, Germany; Berger J., Department of Sport Science, Technische Universität Kaiserslautern, Kaiserslautern, Germany; Ludwig O., Department of Sport Science, Technische Universität Kaiserslautern, Kaiserslautern, Germany; Günther D., Department of Sport Science, Technische Universität Kaiserslautern, Kaiserslautern, Germany; Kelm J., Chirurgisch-Orthopädisches Zentrum, Illingen, Germany; Fröhlich M., Department of Sport Science, Technische Universität Kaiserslautern, Kaiserslautern, Germany","There is little scientific evidence regarding the cumulative effect of purposeful heading. The head-neck-torso alignment is considered to be of great importance when it comes to minimizing potential risks when heading. Therefore, this study determined the relationship between head-neck-torso alignment (cervical spine, head, thoracic spine) and the acceleration of the head, the relationship between head acceleration and maximum ball speed after head impact and differences between head accelerations throughout different heading approaches (standing, jumping, running). A total of 60 male soccer players (18.9 ± 4.0 years, 177.6 ± 14.9 cm, 73.1 ± 8.6 kg) participated in the study. Head accelerations were measured by a telemetric Noraxon DTS 3D Sensor, whereas angles for the head-neck-torso alignment and ball speed were analyzed with a Qualisys Track Manager program. No relationship at all was found for the standing, jumping and running approaches. Concerning the relationship between head acceleration and maximum ball speed after head impact only for the standing header a significant result was calculated (p = 0.024, R2 =.085). A significant difference in head acceleration (p <.001) was identified between standing, jumping and running headers. To sum up, the relationship between head acceleration and head-neck-torso alignment is more complex than initially assumed and could not be proven in this study. Furthermore first data were generated to check whether the acceleration of the head is a predictor for the resulting maximum ball speed after head impact, but further investigations have to follow. Lastly, we confirmed the results that the head acceleration differs with the approach. © 2021 Stephan Becker, Joshua Berger, Oliver Ludwig, Daniel Günther, Jens Kelm, Michael Fröhlich, published by Sciendo 2021.","concussion; heading approaches; impact; injury biomechanics; kinetics","","Babbs C., Biomechanis of heading a soccer ball: Implications for players safety, The Scientific World Journal, 1, pp. 281-322, (2001); Bauer J.A., Thomas T.S., Caraugh J.H., Kaminski T.W., Hass C.J., Impact forces and neck muscle activity by collegiate female soccer players, J. Sports Sci, 19, pp. 171-179, (2001); Beaudouin F., Aus D.F.K., Tro T., Reinsberger C., Meyer T., Match situations leading to head injuries in professional male football (soccer)- A video-based analysis over 12 years, Clin. J. Sport Med, (2018); Beaudouin F., Aus D.F.K., Tro T., Reinsberger C., Meyer T., Time trends of head injuries over multiple seasons in professional male football (soccer), Sports Med. Int. Open, 3, pp. E6-E11, (2018); Becker S., Frohlich M., Kelm J., Ludwig O., Change of muscle activity as well as kinematic and kinetic parameters during headers after core muscle fatigue, Sports, 5, pp. 1-7, (2017); Becker S., Frohlich M., Kelm J., Ludwig O., The influence of fatigued core muscles on head acceleration during headers in soccer, Sports, 6, pp. 1-11, (2018); Boden B.P., Kirkendall D.T., Garrett W.E., Concussion incidence in elite college soccer players, Am. J. Sport Med, 26, pp. 331-338, (1998); Caccese J.B., Buckley T.A., Tierney R.T., Arbogast K.B., Rose W.C., Glutting J.J., Kaminski T.W., Head and neck size and strength predict linear and rotational acceleration during purposeful soccer heading, Sports Biomech, (2017); Caccese J.B., Kaminski T.W., Minimizing head acceleration in soccer: A review of the literature, Sports Med, 46, pp. 1591-1604, (2016); Caccese J.B., Lamond L.C., Buckley T.A., Kaminski T.W., Reducing purposeful headers from goal kicks and punts may reduce cumulative exposure to head acceleration, Research in Sports Medicine, 24, pp. 407-415, (2016); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (1988); Dorminy M.A., Hoogeveen R.T., Tierney M., Higgins J.K., McDevitt J.K., Kretzschmar J., Effect of soccer heading ball speed on S100B, sideline concussion assessments and head impact kinematics, Brain Inj, 29, pp. 1158-1164, (2015); Funk J.R., Cormier J.M., Bain C.E., Guzman H., Bonugli E., Manoogian S.J., Head and neck loading in everyday and vigorous activities, Ann Biomed Eng, 39, pp. 766-776, (2011); Hanlon E.M., Bir C.A., Real-time head acceleration measurement in girls' youth soccer, Med Sci Sports Exerc, 44, pp. 1102-1108, (2012); Kerr H., Riches P., Distributions of peak head accelerations during soccer heading vary between novice and skilled females, Br. J. Sports Med, 38, pp. 650-653, (2004); Kirkendall D.T., Jordan S.E., Garrett W.E., Heading and head injuries in soccer, Sports Med, 31, pp. 328-386, (2001); Lamond L.C., Caccese J.B., Buckley T.A., Glutting J., Kaminski T.W., Linear acceleration in direct head contact across impact type, player position, and playing scenario in collegiate women's soccer players, J. Athl. Train, 53, pp. 115-121, (2018); Levine T.R., Hullett C.R., Eta squared, partial eta squared, and misreporting of effect size in communication research, Hum. Commun. Res, 28, pp. 612-625, (2002); Levitch C.F., Zimmerman M.E., Lubin N., Kim N., Lipton R.B., Stewart W.F., Kim M., Lipton M.L., Recent and longterm soccer heading exposure is differentially associated with neuropsychological function in amateur players, J. Int. Neurpsychol. Soc, 24, pp. 147-155, (2018); Lynch J.M., Bauer J.A., The U.S. Soccer Sports Medicine Book, pp. 81-85, (1996); McCrory P., Zazryn T., Cameron P., The evidence for chronic traumatic encephalopathy in boxing, Sports Med, 37, pp. 467-476, (2007); Mehnert M.J., Agesen T., Malanga G.A., heading"" and neck injuries in soccer: A review of biomechanics and potential long-term effects, Pain Physician, 8, pp. 391-397, (2005); Naunheim R.S., Ryden A., Standeven J., Genin G., Lewis L., Thompson P., Bayly P., Does soccer headgear attentuate the impact when heading a soccer ball?, Acad. Emerg. Med, 10, pp. 85-90, (2003); Naunheim R.S., Bayly P.V., Standeven J., Neubauer J.S., Lewis L.M., Genin G.M., Linear and angular head accelerations during heading of a soccer ball, Med. Sci. Sports Exerc, 35, pp. 1406-1412, (2003); Omalu B.I., Bailes J., Hammers J.K., Fitzsimmons R.P., Chronic traumatic encephalopathy, suicides and parasuicides in professional Amercan athletes: The role of forensic pathologist, Am. J. Forensic Med. Pathol, 31, pp. 130-132, (2010); Shewchenko N., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football, Part 2: Biomechanics of Ball Heading and Head Response. Br. J. Sports Med, 39, pp. i26-i32, (2005); Shewchenko N., Withnall C., Koewn M., Gittens R., Dvorak J., Heading in football, Part 1: Development of Biomechanical Methods to Investigate Head Response. Br. J. Sports Med, 39, pp. i10-i25, (2005); Spiotta A.M., Adam J.B., Benzel E.C., Heading in soccer: Dangerours play?, Neurosurgery, 70, pp. 1-11, (2012); Sunami S., Maruyama T., Motion and EMG analysis of soccer-ball heading for the lateral direction, Football Science, 5, pp. 7-17, (2008); World medical association declaration of Helsinki: Ethical principles for medical research involving human subjects, Jama, 310, pp. 2191-2194, (2013)","S. Becker; Department of Sport Science, Technische Universität Kaiserslautern, Kaiserslautern, Germany; email: stephan.becker@sowi.uni-kl.de","","Sciendo","16405544","","","","English","J. Hum. Kinet.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85101277693" "Lehnert M.; Psotta R.; Botek Z.","Lehnert, M. (56525447100); Psotta, R. (6505984468); Botek, Z. (55542104900)","56525447100; 6505984468; 55542104900","The effects of high-resistance and plyometric training on adolescent soccer players: A comparative study","2012","Gazzetta Medica Italiana Archivio per le Scienze Mediche","171","5","","567","576","9","4","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84871790040&partnerID=40&md5=3bfc608dccff0978e886c3dca7c971f3","Department of Sports, Faculty of Physical Culture, Palacky University, Olomouc, Czech Republic; Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, Palacky University, Olomouc, Czech Republic","Lehnert M., Department of Sports, Faculty of Physical Culture, Palacky University, Olomouc, Czech Republic; Psotta R., Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, Palacky University, Olomouc, Czech Republic; Botek Z., Department of Sports, Faculty of Physical Culture, Palacky University, Olomouc, Czech Republic","Aim. The aim of this study was to compare the training effects of high-resistance versus plyometric training of the lower extremities in adolescent soccer players used in a preseason period. Methods. Elite soccer (football) players (N.=16, age 17.8±1.7 years) were randomly assigned to a high-resistance training group (HRG) and a plyometric training group (PG). The strength training in the HRG consisted of half-squats on a multipress with 85-90% 1 RM, while in the PG various types of jump exercises were used. Within a five-week program, strength training was included in 13 of the 35 training units. The following preand post-measurements were completed: unilateral concentric strength of knee flexors and extensors on an isokinetic dynamometer, 10-m and 30-m running sprint tests, counter-movement jump with arms and arms fixed at shoulders on a dynamometric platform. Results. Significant positive changes after the intervention were only observed in the average work produced during a knee flexion by the dominant leg (150.3±25 J versus 180.0±26.6 J; P<0.05) and the ratio of dominant/non-dominant-leg peak torque during knee extensions in the PG (0.93±0.18 vs. 1.02±0.20; P<0.05). Some training-induced changes in mechanical work during isokinetic flexion and extension in the PG were not accompanied by significant improvement of counter movement jumps and sprint performance. Conclusion. Both high resistance and plyometric exercises applied in adolescent soc cer players 2 to 3 times a week during the 5-week training did not induce significant improvement in isokinetic leg strength, jump and sprint performance.","Muscle strength; Soccer; Training","adolescent; arm movement; article; athlete; biomechanics; controlled study; dynamic muscle strength; dynamometer; dynamometry; endurance training; football; high resistance training; human; human experiment; isokinetic exercise; knee function; leg; measurement; muscle strength; normal human; plyometrics; resistance training; running; running sprint test; shoulder; sport; task performance; therapy effect","Cometti G., Maffiuletti N.A., Pousson M., Chatard J.C., Maffulli N., Isokinetic strength and anaerobic power of elite, sub elite and amateur French soccer players, Int J Sports Med, 22, pp. 45-51, (2001); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer, Sports Med, 35, pp. 501-536, (2005); Wisloff U., Castagna C., Helgerud J., Jones R., Hoff J., Strong correlation of maximal squat strength with sprint performance and vertical jump height in elite soccer players, Brit J Sports Med, 38, pp. 285-288, (2004); Gissis I., Papadopoulos C., Kalapotharakos V.I., Sotiropoulos A., Komsis G., Manolopoulos E., Strength and speed characteristics of elite, sub-elite, and recreational young soccer players, Res Sports Med, 14, pp. 205-214, (2006); Peterson M., Alvar B., Rhea M., The contribution of maximal force production to explosive movement among young collegiate athletes, J Strength Cond Res, 20, pp. 867-873, (2006); Wirth K., Schmidtbleicher D., Periodization of speed training. Part 1: Psychological essentials of speed training, Leistungssport, 37, pp. 35-40, (2007); Wilmore J.H., Costill D.L., Kenney W.L., Physiology of Sport and Exercise, (2008); Psotta R., Bunc V., Mahrova A., Netscher J., Novakova H., Soccer: Fitness Training, (2006); Behm D.G., Sale D.G., Intended rather than actual movement velocity determines velocity-specific training response, Eur J App Physiol, 74, pp. 359-368, (1993); Almasbakk B., Hoff J., Coordination, the determinant of velocity specificity, J Appl Physiol, 80, pp. 46-52, (1996); Schmidtbleicher D., Training for power events, Strength and Power in Sport, pp. 381-395, (1992); Stone M.H., Stone Me., Sands W.A., Principles and Practice of Resistance Training, (2007); Zatsiorskij V.M., Kraemer W.J., Science and Practice of Strength Training, (2006); Hoff J., Training and testing physical capacities for elite soccer players, J Sports Sci, 23, pp. 573-582, (2005); Bompa T., Carrera M., Periodization Training for Sports, (2005); Wathen D., Baechle T.R., Earle R.W., Periodization, Essentials of Strength Training and Conditioning, pp. 507-522; Chu D.A., Jumping into Plyometrics, (1998); Gamble P., Strength and Conditioning for Team Sports: Sport Specific Physical Preparation for High Performance, (2010); Potach D.H., Chu D.A., Plyometric training, Essentials of Strength Training and Conditioning, pp. 413-456, (2008); Newton R.U., Kramer W.J., Developing explosive muscular power: Implications for a mixed methods training strategy, Strength & Conditioning, 16, pp. 20-31, (1994); Boyle M., Functional Training for Sports, (2004); Matavulj D., Kukolj M., Ugarkovic D., Tihanyi J., Jaric S., Effects of plyometric training on jumping performance in junior basketball players, J Sports Med Phys Fit, 41, pp. 159-164, (2001); Thomas K., French D., Gates P.R., The effect of two plyometric training techniques on muscular power and agility in youth soccer players, J Strength Cond Res, 23, pp. 332-335, (2009); Impellizzeri F.M., Rampinini E., Castagna C., Martino F., Fiorini S., Wisloff U., Effect of plyometric training on sand versus grass on muscle soreness and jumping and sprinting ability in soccer players, Br J Sports Med, 42, pp. 42-46, (2008); Diallo O., Dore E., Duche P., VanPraagh E., Effects of plyometric training followed by a reduced training programme on physical performance in prepubescent soccer players, J Sports Med Phys Fit, 41, pp. 342-348, (2001); Campo S.S., Vaeyens R., Philippaerts R.M., Redondo J.C., De Benito A.M., Cuadrado G., Effects of lower-limb plyometric training on body composition, explosive strength, and kicking speed in female soccer players, J Strength Cond Res, 23, pp. 1714-1722, (2009); Baechle T.R., Earle R.W., Essentials of Strength Training and Conditioning, (2008); Helgerud J., Engen L.C., Wisloff U., Hoff J., Aerobic endurance training improves soccer performance, Med Sci Sports Exerc, 33, pp. 1925-1931, (2001); Hoff J., Helgerud J., Maximal strength training enhances running economy and aerobic endurance performance, Football (Soccer): New Developments in Physical Training Research, pp. 39-55, (2002); Helgerud J., Kemi O.J., Hoff J., Pre-season concurrent strength and endurance development in elite soccer players. In, Football (Soccer): New Developments in Physical Training Research, pp. 55-66, (2002); Leatt P., Shepard R.J., Plyley M.J., Specific muscular development in under-18 soccer players, J Sports Sci, 5, pp. 165-175, (1987); McMillan K., Helgerud J., MacDonald R., Hoff J., Physiological adaptations to soccer specific endurance training in professional youth soccer players, Br J Sports Med, 39, pp. 273-277, (2005); Impellizzeri F.M., Rampinini E., Maffiuletti N., Marcora S.M., A vertical jump force test for assessing bilateral strength asymmetry in athletes, Med Sci Sports Exerc, 39, pp. 2044-2050, (2007); Kraemer W.J., Hakinen K., Strength Training for Sport, (2002); Brown L.E., Isokinetics in Human Performance, (2000); Murphy A.J., Wilson G.J., The ability of tests of muscular function to reflex training-induced changes in performance, J Sports Sci, 15, pp. 191-200, (1997); Baker D., Wilson G., Carylon R., Generality vs. specificity: A comparison of dynamic and isometric measures of strength and speed strength, Eur J Appl Physiol, 68, pp. 350-355, (1994); Fry A.C., The role of resistance exercise intensity on muscle fibre adaptations, Sports Med, 34, pp. 663-679, (2004); Fatouros I.G., Jamurtas A.Z., Leontsindi D.T., Aggelousis N., Kostopoulos N., Buckenmeyer P., Evaluation of plyometric exercise training, weight training, and their combination on vertical jumping performance and leg strength, J Strength Cond Res, 14, pp. 470-476, (2000); Rahimi P., Arshadi P., Behpur N., Boroujerdi S.S., Rahimi M., Evaluation of plyometrics, weight training and their combination on angular velocity, Phys Educ Sport, 4, pp. 1-8, (2006); Perez-Gomez J., Olmedillas H., Delgado-Guerra S., Royo I.A., Vincente-Rodrigues G., Ortiz R.A., Et al., Effects of weight lifting training combined with plyometric exercises on physical fitness, body composition, and knee extension velocity during kicking in football, Appl Physiol Nutr Me, 33, pp. 501-510, (2008)","R. Psotta; Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, Palacky University, Olomouc, Czech Republic; email: rudolf.psotta@upol.cz","","","03933660","","GMIME","","English","Gazz. Med. Ital. Arch. Sci. Med.","Article","Final","","Scopus","2-s2.0-84871790040" "Santos F.J.; Valido A.J.; Malcata I.S.; Ferreira C.C.; Pessôa Filho D.M.; Verardi C.E.L.; Espada M.C.","Santos, Fernando J. (57214922126); Valido, Aníbal J. (6603724623); Malcata, Inês S. (57280544700); Ferreira, Cátia C. (57217385586); Pessôa Filho, Dalton M. (55216600500); Verardi, Carlos E. L. (55547304000); Espada, Mário C. (56888568200)","57214922126; 6603724623; 57280544700; 57217385586; 55216600500; 55547304000; 56888568200","The relationship between preseason common screening tests to identify inter-limb asymmetries in high-level senior and professional soccer players","2021","Symmetry","13","10","1805","","","","3","10.3390/sym13101805","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116132724&doi=10.3390%2fsym13101805&partnerID=40&md5=8f0301be8b4f0b14b8cb80f74a41d25a","Polytechnic Institute of Setúbal, School of Education, Setúbal, 2914-504, Portugal; Faculty of Human Kinetics, University of Lisbon, Cruz Quebrada, 1499-002, Portugal; Life Quality Research Centre, Complexo Andaluz, Apartado, Rio Maior, 2040-413, Portugal; Polytechnic Institute of Setúbal, School of Technology (ESTSetúbal, CDP2T), Setúbal, 2914-508, Portugal; Centre for Marine Technology and Ocean Engineering (CENTEC), Instituto Superior Técnico, Universidade de Lisboa, Lisbon, 1049-001, Portugal; Research Group in Optimization of Training and Sport Performance (GOERD), Faculty of Sports Sciences, University of Extremadura, Caceres, 10003, Spain; Department of Physical Education, São Paulo State University (UNESP), Bauru, 17033-360, Brazil; Faculty of Science, São Paulo State University (UNESP), Bauru, 17033-360, Brazil; São Paulo State University (UNESP), Rio Claro, 13506-900, Brazil","Santos F.J., Polytechnic Institute of Setúbal, School of Education, Setúbal, 2914-504, Portugal, Faculty of Human Kinetics, University of Lisbon, Cruz Quebrada, 1499-002, Portugal, Life Quality Research Centre, Complexo Andaluz, Apartado, Rio Maior, 2040-413, Portugal; Valido A.J., Polytechnic Institute of Setúbal, School of Technology (ESTSetúbal, CDP2T), Setúbal, 2914-508, Portugal, Centre for Marine Technology and Ocean Engineering (CENTEC), Instituto Superior Técnico, Universidade de Lisboa, Lisbon, 1049-001, Portugal; Malcata I.S., Polytechnic Institute of Setúbal, School of Technology (ESTSetúbal, CDP2T), Setúbal, 2914-508, Portugal; Ferreira C.C., Polytechnic Institute of Setúbal, School of Education, Setúbal, 2914-504, Portugal, Research Group in Optimization of Training and Sport Performance (GOERD), Faculty of Sports Sciences, University of Extremadura, Caceres, 10003, Spain; Pessôa Filho D.M., Department of Physical Education, São Paulo State University (UNESP), Bauru, 17033-360, Brazil, Faculty of Science, São Paulo State University (UNESP), Bauru, 17033-360, Brazil; Verardi C.E.L., Faculty of Science, São Paulo State University (UNESP), Bauru, 17033-360, Brazil, São Paulo State University (UNESP), Rio Claro, 13506-900, Brazil; Espada M.C., Polytechnic Institute of Setúbal, School of Education, Setúbal, 2914-504, Portugal, Life Quality Research Centre, Complexo Andaluz, Apartado, Rio Maior, 2040-413, Portugal, Polytechnic Institute of Setúbal, School of Technology (ESTSetúbal, CDP2T), Setúbal, 2914-508, Portugal","This study sought to examine inter-limb asymmetries in common screening tests performed during preseason and to analyze the relationship between the performance in the different tests. Nineteen high-level senior and professional soccer players (age: 23.2 ± 3.1 years; height: 181 ± 0.06 cm; body mass: 75.2 ± 4.8 kg) performed several common screening tests during pre-season: Dorsiflexion lunge test (DLT); bent knee fall out test (BKFO); y-balance anterior test (YBT A); y-balance posterolateral test (YBT PL); Y-balance posteromedial test (YBT PM); Heel-rise test (HRT) and single leg hamstring bridge test (SLHBT). High levels of reliability (ICC > 0.88 and <0.94) were observed in all the studied variables. Inter-limb significant differences were observed in DLT and YBT PM test (p < 0.01) but YBT A, HRT and SLHBT presented trivial effect size (ES) (0.03; 0.07 and 0.13, respectively), contrary to DLT, BKFO and YBT PL, all with small ES (0.20; −0.23 and −0.22) and YBT PM, which revealed very large ES (2.91). Considering all data, high-level senior and professional soccer players present fairly good mean values of lower limb symmetry. Performance considering all tests was different, a fact associated with different biomechanical dynamics (e.g., YBT), nonetheless, the correlations between tests underline the relationship between these, which could represent important evidence to consider for injury prevention and performance enhancement programs. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.","Biomechanical; Injury risk; Inter-limb; Performance; Soccer; Symmetry","","Santos F.J., Verardi C.E.L., de Moraes M.G., Filho D.M.P., Macedo A.G., Figueiredo T.P., Ferreira C.C., Borba R.P., Espada M.C., Effects of Pitch Size and Goalkeeper Participation on Physical Load Measures during Small-Sided Games in Sub-Elite Professional Soccer Players, Appl. Sci, 11, (2021); Aurelio J., Dias E., Soares T., Espada M., Jorge G., Pessoa Filho D., Pereira A., Figueiredo T., Relationship between body composition, anthropometry and physical fitness in under-12 soccer players of different positions, Int. J. Sports Sci, 6, pp. 25-30, (2016); Santos F., Figueiredo T., Filho D., Verardi C., Macedo A., Ferreira C., Espada M., Training Load in Different Age Category Soccer Players and Relationship to Different Pitch Size Small-Sided Games, Sensors, 21, (2021); Suarez-Arrones L., Torreno N., Requena B., De Villarreal E.S., Casamichana D., Barbero-Alvarez J.C., Munguia-Izquierdo D., Match-play activity profile in professional soccer players during official games and the relationship between external and internal load, J. Sports Med. Phys. Fit, 55, pp. 1417-1422, (2015); Hagglund M., Walden M., Magnusson H., Kristenson K., Bengtsson H., Ekstrand J., Injuries affect team performance negatively in professional football: An 11-year follow-up of the UEFA Champions League injury study, Br. J. Sports Med, 47, pp. 738-742, (2013); Hulme A., Finch C.F., From monocausality to systems thinking: A complementary and alternative conceptual approach for better understanding the development and prevention of sports injury, Inj. Epidemiol, 2, pp. 1-12, (2015); Bittencourt N., Meeuwisse W.H., Mendonca L., Nettel-Aguirre A., Ocarino J., Fonseca S., Complex systems approach for sports injuries: Moving from risk factor identification to injury pattern recognition—narrative review and new concept, Br. J. Sports Med, 50, pp. 1309-1314, (2016); Read P.J., Oliver J.L., Croix M.B.A.D.S., Myer G.D., Lloyd R.S., An audit of injuries in six english professional soccer academies, J. Sports Sci, 36, pp. 1542-1548, (2018); Renshaw A., Goodwin P.C., Injury incidence in a Premier League youth soccer academy using the consensus statement: A prospective cohort study, BMJ Open Sport Exerc. 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Train, 51, pp. 410-424, (2016); Hagglund M., Walden M., Ekstrand J., Risk Factors for Lower Extremity Muscle Injury in Professional Soccer, Am. J. Sports Med, 41, pp. 327-335, (2012); Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: The UEFA injury study, Br. J. Sports Med, 45, pp. 553-558, (2009); Faigenbaum A.D., Bush J.A., McLoone R.P., Kreckel M.C., Farrell A., Ratamess N.A., Kang J., Benefits of Strength and Skill-based Training During Primary School Physical Education, J. Strength Cond. Res, 29, pp. 1255-1262, (2015); Plisky P.J., Gorman P.P., Butler R.J., Kiesel K.B., Underwood F.B., Elkins B., The Reliability of an Instrumented Device for Measuring Components of the Star Excursion Balance Test, N. Am. J. Sports Phys. Ther. NAJSPT, 4, pp. 92-99, (2009); Plisky P.J., Rauh M.J., Kaminski T.W., Underwood F.B., Star Excursion Balance Test as a Predictor of Lower Extremity Injury in High School Basketball Players, J. Orthop. 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On the methodology for recording overuse symptoms in sports, Br. J. Sports Med, 43, pp. 966-972, (2009); Henderson G., Barnes C.A., Portas M.D., Factors associated with increased propensity for hamstring injury in English Premier League soccer players, J. Sci. Med. Sport, 13, pp. 397-402, (2010); Silder A., Reeder S., Thelen D.G., The influence of prior hamstring injury on lengthening muscle tissue mechanics, J. Biomech, 43, pp. 2254-2260, (2010); Macdonald B., O'Neill J., Pollock N., Van Hooren B., Single-Leg Roman Chair Hold Is More Effective Than the Nordic Hamstring Curl in Improving Hamstring Strength-Endurance in Gaelic Footballers With Previous Hamstring Injury, J. Strength Cond. Res, 33, pp. 3302-3308, (2019); Smith C.A., Chimera N.J., Warren M., Association of Y Balance Test Reach Asymmetry and Injury in Division I Athletes, Med. Sci. Sports Exerc, 47, pp. 136-141, (2015); Faigenbaum A.D., Lloyd R.S., Macdonald J., Myer G.D., Citius, Altius, Fortius: Beneficial effects of resistance training for young athletes: Narrative review, Br. J. Sports Med, 50, pp. 3-7, (2015); Palomares B.R.A., Palomares E.M.D.G., Uchoa F.N.M., Andrade R.D.A., Deana N.F., Alves N., Effectiveness of the conju-gate influence method in improving static and dynamic balance in rhythmic gymnastics gymnasts, J. Phys. Educ. Sport, 19, pp. 1407-1417, (2019); De Hoyo M., Sanudo B., Carrasco L., Mateo-Cortes J., Dominguez-Cobo S., Fernandes O.D.J., Del Ojo J.J., Gonzalo-Skok O., Effects of 10-week eccentric overload training on kinetic parameters during change of direction in football players, J. Sports Sci, 34, pp. 1-8, (2015); Eirale C., Hamstring injuries are increasing in men’s professional football: Every cloud has a silver lining?, Br. J. Sports Med, 52, (2018); Hagglund M., Walden M., Ekstrand J., Previous injury as a risk factor for injury in elite football: A prospective study over two consecutive seasons, Br. J. Sports Med, 40, pp. 767-772, (2006); Rodrigues J., Rodrigues F., Resende R., Espada M., Santos F., Mixed Method Research on Football Coaches’ Competitive Behavior, Front. Psychol, 12, (2021)","M.C. Espada; Polytechnic Institute of Setúbal, School of Education, Setúbal, 2914-504, Portugal; email: mario.espada@ese.ips.pt","","MDPI","20738994","","","","English","Symmetry","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85116132724" "Rodríguez-Sanz D.; García-Sánchez A.; Becerro-de-Bengoa-Vallejo R.; Martínez-Jiménez E.M.; Calvo-Lobo C.; Fernández-Carnero J.; Losa-Iglesias M.E.; López-López D.","Rodríguez-Sanz, David (57215085593); García-Sánchez, Antonio (57223115550); Becerro-de-Bengoa-Vallejo, Ricardo (35208020500); Martínez-Jiménez, Eva María (57203685911); Calvo-Lobo, César (57192819213); Fernández-Carnero, Josué (59157664400); Losa-Iglesias, Marta Elena (26635501900); López-López, Daniel (56076727700)","57215085593; 57223115550; 35208020500; 57203685911; 57192819213; 59157664400; 26635501900; 56076727700","Eyes-Open Versus Eyes-Closed Somatosensory Motor Balance in Professional Soccer Players With Chronic Ankle Instability: A Case-Control Study","2021","Orthopaedic Journal of Sports Medicine","9","3","","","","","4","10.1177/2325967120983606","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104899955&doi=10.1177%2f2325967120983606&partnerID=40&md5=6dc8ababaedc62e4f72c20d5f08de475","Facultad de enfermería Fisioterapia y Podología, Universidad Complutense de Madrid, Madrid, Spain; Faculty of Sports, Universidad Europea de Madrid, Spain; Faculty of Health Sciences, Universidad Rey Juan Carlos, Alcorcon, Spain; Nursing and Stomatology Department, Faculty of Health Sciences, Universidad Rey Juan Carlos, Madrid, Spain; Research, Health and Podiatry Group, Department of Health Sciences, Faculty of Nursing and Podiatry, Universidade da Coruña, Ferrol, Spain","Rodríguez-Sanz D., Facultad de enfermería Fisioterapia y Podología, Universidad Complutense de Madrid, Madrid, Spain; García-Sánchez A., Faculty of Sports, Universidad Europea de Madrid, Spain; Becerro-de-Bengoa-Vallejo R., Facultad de enfermería Fisioterapia y Podología, Universidad Complutense de Madrid, Madrid, Spain; Martínez-Jiménez E.M.; Calvo-Lobo C., Facultad de enfermería Fisioterapia y Podología, Universidad Complutense de Madrid, Madrid, Spain; Fernández-Carnero J., Faculty of Health Sciences, Universidad Rey Juan Carlos, Alcorcon, Spain; Losa-Iglesias M.E., Nursing and Stomatology Department, Faculty of Health Sciences, Universidad Rey Juan Carlos, Madrid, Spain; López-López D., Research, Health and Podiatry Group, Department of Health Sciences, Faculty of Nursing and Podiatry, Universidade da Coruña, Ferrol, Spain","Background: Chronic ankle instability (CAI) is a condition defined by certain structural and functional deficits in the ankle joint complex after acute ankle injury. These deficits include pathological joint laxity, impaired postural control, and decreased strength and neuromuscular control. Purpose: To compare an eyes-open versus an eyes-closed balance training protocol in professional soccer players with CAI. Study Design: Cohort study; Level of evidence, 2. Methods: For this study, we evaluated 19 players from 2 professional soccer teams in Madrid, Spain, all of whom had CAI. Participants from both teams were randomly assigned to an eyes-open group (n = 9) or eyes-closed group (n = 10). All participants completed 4 weeks of a supervised exercise protocol consisting of 3 sessions per week. Members of both the eyes-open and eyes-closed groups performed the same exercise protocol in the same order of execution. At the end of the protocol, the participants were assessed for pain (visual analog scale), ankle dorsiflexion range of motion (weightbearing lunge test), dynamic stability (Star Excursion Balance Test), and fear of movement and reinjury (Tampa Scale for Kinesiophobia). We compared results both before and after balance training and between the eyes-open and eyes-closed balance training groups. Results: Statistically significant differences were found for all of the assessed variables before and after balance training. No statistically significant differences were found between the eyes-closed and eyes-open groups on any variable. Conclusion: In the current study, eyes-closed balance training was not more effective than eyes-open balance training for CAI in professional soccer players. © The Author(s) 2021.","biomechanics; exercise; motor control; rehabilitation","adult; ankle instability; ankle sprain; Article; biomechanics; body mass; case control study; cohort analysis; controlled study; exercise; exercise test; eyes closed balance training; eyes opened balance training; human; male; muscle strength; neuromuscular function; range of motion; scoring system; soccer player; somatosensory system; Star Excursion Balance Test; Tampa Scale for Kinesiophobia; visual analog scale; Weightbearing lunge test; young adult","Attenborough A.S., Hiller C.E., Smith R.M., Stuelcken M., Greene A., Sinclair P.J., Chronic ankle instability in sporting populations, Sports Med, 44, 11, pp. 1545-1556, (2014); Ayala Rodriguez F., Puerta Callejon J.M., Flores Gallego M.J., Et al., A Bayesian analysis of the main risk factors for hamstrings injuries [in Spanish], Kronos, 15, 1, (2016); 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Plisky P.J., Rauh M.J., Kaminski T.W., Underwood F.B., Star Excursion Balance Test as a predictor of lower extremity injury in high school basketball players, J Orthop Sports Phys Ther, 36, 12, pp. 911-919, (2006); Pourkazemi F., Hiller C.E., Raymond J., Nightingale E.J., Refshauge K.M., Predictors of chronic ankle instability after an index lateral ankle sprain: a systematic review, J Sci Med Sport, 17, 6, pp. 568-573, (2014); Ridder R., Willems T., Vanrenterghem J., Roosen P., Influence of balance surface on ankle stabilizing muscle activity in subjects with chronic ankle instability, J Rehabil Med, 47, 7, pp. 632-638, (2015); Rodriguez-Sanz D., Losa-Iglesias M.E., Lopez-Lopez D., Calvo-Lobo C., Palomo-Lopez P., Becerro-de-Bengoa-Vallejo R., Infrared thermography applied to lower limb muscles in elite soccer players with functional ankle equinus and non-equinus condition, PeerJ, 5, (2017); Sefton J.M., Yarar C., Hicks-Little C.A., Berry J.W., Cordova M.L., Six weeks of balance training improves sensorimotor function in individuals with chronic ankle instability, J Orthop Sports Phys Ther, 41, 2, pp. 81-89, (2011); Song K., Burcal C.J., Hertel J., Wikstrom E.A., Increased visual use in chronic ankle instability: a meta-analysis, Med Sci Sports Exerc, 48, 10, pp. 2046-2056, (2016); Swenson D.M., Yard E.E., Fields S.K., Comstock R.D., Patterns of recurrent injuries among US high school athletes, 2005-2008, Am J Sports Med, 37, 8, pp. 1586-1593, (2009); Wikstrom E.A., Naik S., Lodha N., Cauraugh J.H., Balance capabilities after lateral ankle trauma and intervention: a meta-analysis, Med Sci Sports Exerc, 41, 6, pp. 1287-1295, (2009)","E.M. Martínez-Jiménez; email: evamam03@ucm.es","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85104899955" "Kuntze G.; Nettel-Aguirre A.; Lorenzen K.N.; Küpper J.; Ronsky J.L.; Whittaker J.L.; Emery C.A.","Kuntze, Gregor (26425117900); Nettel-Aguirre, Alberto (16042942100); Lorenzen, Kristin N. (57196469296); Küpper, Jessica (15725653800); Ronsky, Janet L. (35570023800); Whittaker, Jackie L. (18635652000); Emery, Carolyn A. (34769706400)","26425117900; 16042942100; 57196469296; 15725653800; 35570023800; 18635652000; 34769706400","Vertical Drop Jump Biomechanics of Patients With a 3- to 10-Year History of Youth Sport–Related Anterior Cruciate Ligament Reconstruction","2021","Orthopaedic Journal of Sports Medicine","9","12","","","","","2","10.1177/23259671211058105","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121012129&doi=10.1177%2f23259671211058105&partnerID=40&md5=1fc548274fd84f957bc140ac3c414626","Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada; Alberta Children’s Hospital Research Institute, University of Calgary, Calgary, AB, Canada; McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada; Centre for Health and Social Analytics, National Institute for Applied Statistics Research Australia, School of Mathematics and Applied Statistics, University of Wollongong, Wollongong, NSW, Australia; Department of Mechanical and Manufacturing Engineering, University of Calgary, Calgary, AB, Canada; Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada; Arthritis Research Canada, Vancouver, BC, Canada","Kuntze G., Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada, Alberta Children’s Hospital Research Institute, University of Calgary, Calgary, AB, Canada, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada; Nettel-Aguirre A., Centre for Health and Social Analytics, National Institute for Applied Statistics Research Australia, School of Mathematics and Applied Statistics, University of Wollongong, Wollongong, NSW, Australia; Lorenzen K.N., Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada; Küpper J., Department of Mechanical and Manufacturing Engineering, University of Calgary, Calgary, AB, Canada; Ronsky J.L., McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada, Department of Mechanical and Manufacturing Engineering, University of Calgary, Calgary, AB, Canada; Whittaker J.L., Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada, Arthritis Research Canada, Vancouver, BC, Canada; Emery C.A., Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada, Alberta Children’s Hospital Research Institute, University of Calgary, Calgary, AB, Canada, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada","Background: A better understanding of movement biomechanics after anterior cruciate ligament reconstruction (ACLR) could inform injury prevention, knee injury rehabilitation, and osteoarthritis prevention strategies. Purpose: To investigate differences in vertical drop jump (VDJ) biomechanics between patients with a 3- to 10-year history of youth sport–related ACLR and uninjured peers of a similar age, sex, and sport. Study Design: Cross-sectional study. Level of evidence III. Methods: Lower limb kinematics and bilateral ground-reaction forces (GRFs) were recorded for participants performing 10 VDJs. Joint angles and GRF data were analyzed, and statistical analysis was performed using 2 multivariate models. Dependent variables included sagittal (ankle, knee, and hip) and coronal (knee and hip) angles at initial contact and maximum knee flexion, the rate of change of coronal knee angles (35%-90% of the support phase; ie, slopes of linear regression lines), and vertical and mediolateral GRFs (normalized to body weight [BW]). Fixed effects included group, sex, and time since injury. Participant clusters, defined by sex and sport, were considered as random effects. Results: Participants included 48 patients with a history of ACLR and 48 uninjured age-, sex-, and sport-matched controls (median age, 22 years [range, 18-26 years]; 67% female). Patients with ACLR demonstrated steeper negative coronal knee angle slopes (β = –0.04 deg/% [95% CI, –0.07 to –0.00 deg/%]; P =.025). A longer time since injury was associated with reduced knee flexion (β = –0.2° [95% CI, –0.3° to –0.0°]; P =.014) and hip flexion (β = –0.1° [95% CI, –0.2° to –0.0°]; P =.018). Regardless of ACLR history, women displayed greater knee valgus at initial contact (β = 2.1° [95% CI, 0.4° to 3.8°]; P =.017), greater coronal knee angle slopes (β = 0.05 deg/% [95% CI, 0.02 to 0.09 deg/%]; P =.004), and larger vertical GRFs (landing: β = –0.34 BW [95% CI, –0.61 to –0.07 BW]; P =.014) (pushoff: β = –0.20 BW [95% CI, –0.32 to –0.08 BW]; P =.001). Conclusion: Women and patients with a 3- to 10-year history of ACLR demonstrated VDJ biomechanics that may be associated with knee motion control challenges. Clinical Relevance: It is important to consider knee motion control during activities such as VDJs when developing injury prevention and rehabilitation interventions aimed at improving joint health after youth sport–related ACLR. © The Author(s) 2021.","anterior cruciate ligament; injury; knee joint; ligament tear; movement biomechanics; youth sport","growth hormone releasing factor; acceleration; ankle; ankle injury; ankle sprain; anterior cruciate ligament injury; anterior cruciate ligament reconstruction; Article; athlete; biomechanics; body weight; chronic pain; cross-sectional study; dependent variable; follow up; ground reaction force; hip muscle; human; knee function; knee injury; knee osteoarthritis; ligament surgery; linear regression analysis; motion; muscle strength; neuromuscular function; osteoarthritis; prevalence; range of motion; risk factor; shoulder injury; soccer player; varus knee; velocity; youth sport","Anderst W.J., Tashman S., The association between velocity of the center of closest proximity on subchondral bones and osteoarthritis progression, J Orthop Res, 27, 1, pp. 71-77, (2009); 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Kuntze; Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Canada; email: gkuntze@ucalgary.ca","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85121012129" "Silva D.C.F.; Macedo R.; Montes A.M.; Santos R.; Vilas-Boas J.P.; Sousa A.S.P.","Silva, Diogo C.F. (57191495445); Macedo, Rui (37026663200); Montes, António Mesquita (57219001144); Santos, Rubim (43861816800); Vilas-Boas, João Paulo (26424846800); Sousa, Andreia S.P. (55505517200)","57191495445; 37026663200; 57219001144; 43861816800; 26424846800; 55505517200","Does the cleat model interfere with ankle sprain risk factors in artificial grass?","2019","Clinical Biomechanics","63","","","119","126","7","2","10.1016/j.clinbiomech.2019.03.004","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062908603&doi=10.1016%2fj.clinbiomech.2019.03.004&partnerID=40&md5=cd49d9a6058916773560888b4ad9cd85","Functional Sciences Department, School of Health, Polytechnic Institute of Porto, Center for Rehabilitation Research (CIR) - Center of Studies of Human Movement and Activity, R. Dr. António Bernardino de Almeida, 400, Porto, 4200-072, Portugal; Physiotherapy Department, School of Health, Polytechnic Institute of Porto, Center for Rehabilitation Research (CIR) - Center of Studies of Human Movement and Activity, Rua Dr. António Bernardino de Almeida, 400, Porto, 4200-072, Portugal; Physics Department, School of Health, Polytechnic Institute of Porto, Center for Rehabilitation Research (CIR) - Center of Studies of Human Movement and Activity, R. Dr. António Bernardino de Almeida, 400, Porto, 4200-072, Portugal; Faculty of Sport, CIFI2D, Porto Biomechanics Laboratory (LABIOMEP), University of Porto, R. Dr. Plácido Costa, 91, Porto, 4200-450, Portugal","Silva D.C.F., Functional Sciences Department, School of Health, Polytechnic Institute of Porto, Center for Rehabilitation Research (CIR) - Center of Studies of Human Movement and Activity, R. Dr. António Bernardino de Almeida, 400, Porto, 4200-072, Portugal; Macedo R., Physiotherapy Department, School of Health, Polytechnic Institute of Porto, Center for Rehabilitation Research (CIR) - Center of Studies of Human Movement and Activity, Rua Dr. António Bernardino de Almeida, 400, Porto, 4200-072, Portugal; Montes A.M., Physiotherapy Department, School of Health, Polytechnic Institute of Porto, Center for Rehabilitation Research (CIR) - Center of Studies of Human Movement and Activity, Rua Dr. António Bernardino de Almeida, 400, Porto, 4200-072, Portugal; Santos R., Physics Department, School of Health, Polytechnic Institute of Porto, Center for Rehabilitation Research (CIR) - Center of Studies of Human Movement and Activity, R. Dr. António Bernardino de Almeida, 400, Porto, 4200-072, Portugal; Vilas-Boas J.P., Faculty of Sport, CIFI2D, Porto Biomechanics Laboratory (LABIOMEP), University of Porto, R. Dr. Plácido Costa, 91, Porto, 4200-450, Portugal; Sousa A.S.P., Physiotherapy Department, School of Health, Polytechnic Institute of Porto, Center for Rehabilitation Research (CIR) - Center of Studies of Human Movement and Activity, Rua Dr. António Bernardino de Almeida, 400, Porto, 4200-072, Portugal","Background: The cleats-surface interaction has been described as a possible risk factor for lateral ankle sprain. However, their interaction is still unknown in individuals with chronic ankle instability. The purpose of this study was to determine the influence of different soccer cleats on kinematic, kinetic and neuromuscular ankle variables on artificial grass in soccer players with and without chronic ankle instability. Methods: Eighty-two amateur athletes divided in two groups: 40 with chronic ankle instability and 42 without chronic ankle instability. All subjects performed 2 series of 6 consecutive crossover jumps with dominant foot, each one with one of the four models of cleats (Turf, Artificial grass, Hard and Firm ground). Cleat and group main effect and interactions of kinematic, kinetic and neuromuscular variables were analyzed according to factorial repeated measures ANOVA. Findings: No statistically significant cleat and group main effect and interactions were identified in kinematic, kinetic and electromyographic magnitude of the peroneal muscles. A main effect of the group was observed for peroneus longus activation time for TF model (p = 0.010). Interpretation: In soccer players, the contributor variables for ankle sprain were not influenced by the kind of soccer cleat used in a functional jump test on artificial grass. However, players with chronic ankle instability present delayed postural adjustments in peroneus longus with the TF model compared to players without chronic ankle instability. © 2019 Elsevier Ltd","Chronic ankle instability; Electromyography; Kinematic; Kinetic; Synthetic ground","Adolescent; Adult; Ankle; Ankle Injuries; Ankle Joint; Anthropometry; Athletes; Athletic Injuries; Biomechanical Phenomena; Cross-Over Studies; Humans; Joint Instability; Male; Muscle, Skeletal; Poaceae; Risk Factors; Shoes; Soccer; Sprains and Strains; Young Adult; Electromyography; Kinematics; Kinetics; Sports; Activation time; Chronic ankle instability; Electromyographic; Lateral ankle sprains; Repeated measures; Soccer player; Surface interactions; Synthetic ground; adult; ankle instability; ankle sprain; Article; electric resistance; electromyography; foot; grass; ground reaction force; human; joint stability; kinematics; major clinical study; male; muscle contraction; patella; peroneus muscle; priority journal; range of motion; risk factor; soccer player; stretching exercise; adolescent; ankle; ankle injury; anthropometry; athlete; biomechanics; crossover procedure; injury; joint instability; pathophysiology; Poaceae; shoe; skeletal muscle; soccer; sport injury; young adult; Stability","Akhbari B., Ebrahimi T.E., Salavati M., Farahini H., Sanjari M., Reliability of timing of muscle activity measurements of ankle musculature in reaction to various angles of sudden external oblique perturbation, RJMS., 13, pp. 15-22, (2007); Arnold B.L., Linens S.W., SJdl M., Ross S.E., Concentric evertor strength differences and functional ankle instability: a meta-analysis, J. 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Biomech.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85062908603" "Reza M.; Amir L.; Andrew F.-M.; Mehdi K.-T.; Julien B.S.","Reza, Mansourizadeh (57213838611); Amir, Letafatkar (54407242300); Andrew, Franklyn-Miller (57213825620); Mehdi, Khaleghi-Tazji (57208491971); Julien, Baker S. (57213823330)","57213838611; 54407242300; 57213825620; 57208491971; 57213823330","Segmental coordination and variability of change in direction in long-standing groin pain","2020","Gait and Posture","77","","","36","42","6","3","10.1016/j.gaitpost.2020.01.013","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85078071441&doi=10.1016%2fj.gaitpost.2020.01.013&partnerID=40&md5=b770032ddec20d0043f89208864f61f5","Faculty of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran; Centre for Health, Exercise and Sports Medicine, University of Melbourne, Melbourne, Victoria, Australia; Sports Surgery Clinic, Dublin, Ireland; Institute of Exercise Science, Hong Kong Baptist University, Hong Kong","Reza M., Faculty of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran; Amir L., Faculty of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran; Andrew F.-M., Centre for Health, Exercise and Sports Medicine, University of Melbourne, Melbourne, Victoria, Australia, Sports Surgery Clinic, Dublin, Ireland; Mehdi K.-T., Centre for Health, Exercise and Sports Medicine, University of Melbourne, Melbourne, Victoria, Australia; Julien B.S., Institute of Exercise Science, Hong Kong Baptist University, Hong Kong","Background: : Long-standing groin pain (LSGP) is a chronic painful condition resulting in both impaired performance and time loss from participation in multidirectional field sport. Research question: : What are the differences in intersegmental coordination strategy and variability of trunk-pelvic and thigh coupling during change of direction in subjects with athletic LSGP and asymptomatic control subjects? Methods: : A motion analysis system was used to collect 3-D kinematic data of the continuous relative phase and the variability of the right and left leg hip. Thoracic-thigh segment data were also collected during multiple ipsilateral turns at a self-selected pace from 16 males with LSGP and 16 asymptomatic controls. It is worth mentioning that, for a more detailed analysis, we divided each cycle diagram into four phases. Independent T-tests were used to compare the two groups. Results: : Subjects with LSGP demonstrate except in phase 2 of the left foot, more out-of-phase movement with both increased variabilities in right/ left thigh - pelvic coupling, right/ left thigh-thoracic, and pelvic- thoracic in every 4 phases and in the decoupling of segmental coordination. Significance: : Decrease in coordination with higher variability is apparent in subjects with LSGP and this aberrant coordination may lead to unexpected compensatory strategies and control impairments. © 2020 Elsevier B.V.","Change of direction; Continuous relative phase; Long-standing groin pain; Segmental coordination; Turning; Variability","Adult; Ataxia; Athletic Injuries; Biomechanical Phenomena; Case-Control Studies; Chronic Pain; Cross-Sectional Studies; Football; Groin; Hip; Humans; Imaging, Three-Dimensional; Male; Orientation; Posture; Psychomotor Performance; Soccer; Torso; Article; clinical article; controlled study; cross-sectional study; hip; human; inguinal pain; kinematics; leg; male; pelvis; priority journal; spinous process; thigh; thorax; trunk; adult; ataxia; biomechanics; body position; case control study; chronic pain; football; inguinal region; injury; orientation; pathophysiology; physiology; psychomotor performance; soccer; sport injury; three-dimensional imaging","Walden M., Hagglund M., Ekstrand J., The epidemiology of groin injury in senior football: a systematic review of prospective studies, Br. 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Amir; Faculty of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran; email: amir.letafatkar@khu.ac.ir","","Elsevier B.V.","09666362","","GAPOF","31972473","English","Gait Posture","Article","Final","","Scopus","2-s2.0-85078071441" "Ibrahim R.; de Boode V.; Kingma I.; van  Dieën J.H.","Ibrahim, Rony (57811031800); de Boode, Vosse (56578823200); Kingma, Idsart (7006133287); van  Dieën, Jaap H. (7005065606)","57811031800; 56578823200; 7006133287; 7005065606","Data-driven strength and conditioning, and technical training programs for goalkeeper’s diving save in football","2022","Sports Biomechanics","","","","","","","3","10.1080/14763141.2022.2099966","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85135116610&doi=10.1080%2f14763141.2022.2099966&partnerID=40&md5=774c734047d527f2af26149ddf9c806b","Department of Physical Education, College of Education, Qatar University, Doha, Qatar; Adidas miCoach Performance Centre, AFC Ajax, Amsterdam, Netherlands; Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Science, Amsterdam, Netherlands","Ibrahim R., Department of Physical Education, College of Education, Qatar University, Doha, Qatar; de Boode V., Adidas miCoach Performance Centre, AFC Ajax, Amsterdam, Netherlands; Kingma I., Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Science, Amsterdam, Netherlands; van  Dieën J.H., Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Science, Amsterdam, Netherlands","The goal of this study was to evaluate the technical and physical adaptations to a data-driven 12-weeks training programs that incorporated recent findings from biomechanical studies on the diving save. Three-dimensional kinematics and kinetics were collected and analysed from 11 goalkeepers diving to save high (190 cm) and low (30 cm) balls at three occasions: twice pre-training and once post-training. Intraclass correlation coefficients were found to be excellent (>.7) between the pre-training tests, and there were no learning effects between them. Three-way repeated measures ANOVAs were used to evaluate the effect of dive side, dive height and training programme (pre- vs post-training) on normalised dive time [s·m−1], average centre of mass (CoM) horizontal velocity [m·s−1] and total power [W] generated at contralateral and ipsilateral push-offs. Compared to pre-training, the post-training results revealed greater average CoM horizontal velocity (+.82 m·s−1, 95% CI = [.62, 1.02]) and power (+523 W, 95% CI = [313, 732]) at contralateral push-off. These adaptations caused a reduction in normalised dive time (-.008 s·m−1, 95% CI = [-.014, -.002]) at post-training compared to pre-training. This translates to 42 cm more goal area coverage in a penalty situation. © 2022 International Society of Biomechanics in Sports.","Biomechanics; elite athlete; inverse dynamics; kinematics; kinetics; soccer","article; biomechanics; correlation coefficient; diving; elite athlete; football; human; kinematics; kinetics; learning; punishment; soccer; training","Acar M., Keles C., Balyan M., Ozkol Z., Karamizrak O., Comparison of jumping and anaerobic performance in Turkish and Cypriot professional soccer goalkeepers, Journal of Sports Sciences, 22, (2004); Beattie K., Kenny I., Lyons M., Carson B., The effect of strength training on performance in endurance athletes, Sports Medicine, 44, 6, pp. 845-865, (2014); Boone J., Vaeyens R., Steyaert A., Bossche L., Bourgois J., Physical fitness of elite Belgian soccer players by player position, The Journal of Strength & Conditioning Research, 26, 8, pp. 2051-2057, (2012); Dicks M., Pocock C., Thelwell R., Van Der Kamp J., A novel on-field training intervention improves Novice goalkeeper penalty kick performance, The Sport Psychologist, 31, 2, pp. 129-133, (2017); Englund T., Pascarella J., Soccer goalkeeper training: The comprehensive guide, (2017); Faber G., Kingma I., Van Dieen J., Effect of initial horizontal object position on peak L5/S1 moments in manual lifting is dependent on task type and familiarity with alternative lifting strategies, Ergonomics, 54, 1, pp. 72-81, (2011); Faber G., Chang C., Kingma I., Dennerlein J., Lifting style and participant’s sex do not affect optimal inertial sensor location for ambulatory assessment of trunk inclination, Journal of Biomechanics, 46, 5, pp. 1027-1030, (2013); Gamble P., Strength and conditioning for team sports: Sport-specific physical preparation for high performance, (2013); Haff G., Triplett N., Essentials of strength training and conditioning, (2015); Ibrahim R., Faber G., Kingma I., Van Dieen J., Kinematic analysis of the drag flick in field hockey, Sports Biomechanics, 16, 1, pp. 45-57, (2017); Ibrahim R., Kingma I., De Boode V., Faber G., Van Dieen J., The effect of preparatory posture on goalkeeper’s diving save performance in football, Frontiers in Sports and Active Living, 1, (2019); Ibrahim R., Kingma I., De Boode V., Faber G., Van Dieen J., Kinematic and kinetic analysis of the goalkeeper’s diving save in football, Journal of Sports Sciences, 37, 3, pp. 313-321, (2019); Ibrahim R., Kingma I., De Boode V., Faber G., Van Dieen J., Angular velocity, moment, and power analysis of the ankle, knee, Frontiers in Sports and Active Living, 2, (2020); Kingma I., De Looze M., Toussaint H., Klijnsma H., Bruijnen T., Validation of a full body 3-D dynamic linked segment model, Human Movement Science, 15, 6, pp. 833-860, (1996); Kuhn W., Penalty-Kick strategies for shooters and goalkeepers, (1988); Luxbacher J.A., Soccer goalkeeper. 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Ibrahim; Department of Physical Education, College of Education, Qatar University, Doha, Qatar; email: rony.ibrahim@qu.edu.qa","","Routledge","14763141","","","","English","Sports Biomech.","Article","Article in press","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85135116610" "Greig M.","Greig, Matt (23034263700)","23034263700","Intermittent treadmill running induces kinematic compensations to maintain soccer kick foot speed despite no change in knee extensor strength","2018","Journal of Applied Biomechanics","34","4","","278","283","5","2","10.1123/jab.2017-0017","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85051537437&doi=10.1123%2fjab.2017-0017&partnerID=40&md5=1428dc76d75d51aedcf19ee8889f5dd1","Sports Injuries Research Group, Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom","Greig M., Sports Injuries Research Group, Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom","Kicking is a fundamental skill and a primary noncontact mechanism of injury in soccer, with injury incidence increasing during the latter stages of match-play. Ten male professional soccer players completed a 90-minute treadmill protocol based on the velocity profile of soccer match-play. Preexercise, and at 15-minute intervals, players completed a maximal velocity kick subjected to kinematic analysis at 200 Hz. Preexercise, and at the end of each half, players also completed isokinetic concentric knee extensor repetitions at 180°·s-1, 300°·s-1, and 60°·s-1. Kicking foot speed was maintained at ~19 m·s-1, with no main effect for exercise duration. In relation to proximal–distal sequencing during the kicking action, there was a significant increase in the duration (but not magnitude) of thigh rotation, with a compensatory decrease in the duration (but not magnitude) of shank rotation during the latter stages of the exercise protocol. In relation to long-axis rotation, pelvic orientation at ball contact was maintained at ~6°, representing a total pelvic rotation in the order of ~15° during the kicking action. Peak knee extensor torque at all speeds was also maintained throughout the protocol, such that kinematic modifications are not attributable to a decline in knee extensor strength. © 2018 Human Kinetics, Inc.","Injury; Isokinetic strength; Kicking technique","Adult; Biomechanical Phenomena; Exercise Test; Foot; Humans; Knee; Male; Muscle Strength; Muscle, Skeletal; Running; Soccer; Thigh; Torque; Kinematics; Rotation; Sporting goods; Sports; Injury; Isokinetic strength; Kicking technique; Kinematic Analysis; Kinematic compensations; Maximal velocity; Non-contact mechanisms; Velocity profiles; adult; Article; circadian rhythm; human; human experiment; kicking; kinematics; knee; locomotion; male; normal human; pelvis; rotation; soccer; soccer player; torque; treadmill exercise; velocity; young adult; biomechanics; exercise test; foot; injuries; knee; muscle strength; physiology; running; skeletal muscle; thigh; Physiological models","Russell M., Benton D., Kingsley M., The effects of fatigue on soccer skills performed during a soccer match simulation, Int J Sports Physiol Perform, 6, pp. 221-233, (2011); 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Bahamonde R.E., Changes in angular momentum during the tennis serve, J Sports Sci, 18, pp. 579-592, (2000); Hirashima M., Kadota H., Sakurai S., Kudo K., Ohtsuki T., Sequential muscle activity and its functional role in the upper extremity and trunk during overarm throwing, J Sports Sci, 20, pp. 301-310, (2002); Rodriguez C., Echegoyen S., Miguel A., Lima H., Soccer injuries: Study in three seasons, J Athl Train, 33, (1998); Hawkins R.D., Hulse M.A., Wilkinson C., Hodson A., Gibson M., The association football medical research programme: An audit of injuries in professional football, Br J Sports Med, 35, pp. 43-47, (2001)","M. Greig; Sports Injuries Research Group, Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom; email: matt.greig@edgehill.ac.uk","","Human Kinetics Publishers Inc.","10658483","","JABOE","29485335","English","J. Appl. Biomech.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85051537437" "Huber C.M.; Patton D.A.; Maheshwari J.; Zhou Z.; Kleiven S.; Arbogast K.B.","Huber, Colin M. (57214871873); Patton, Declan A. (58547446800); Maheshwari, Jalaj (57207566077); Zhou, Zhou (56074607900); Kleiven, Svein (6603462174); Arbogast, Kristy B. (7003855079)","57214871873; 58547446800; 57207566077; 56074607900; 6603462174; 7003855079","Finite element brain deformation in adolescent soccer heading","2023","Computer Methods in Biomechanics and Biomedical Engineering","","","","","","","2","10.1080/10255842.2023.2236746","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85165259595&doi=10.1080%2f10255842.2023.2236746&partnerID=40&md5=a519acc3a34e7663118b8e03626e0d2e","Department of Bioengineeing, University of Pennsylvania, Philadelphia, PA, United States; Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, Philadelphia, PA, United States; Neuronic Engineering, KTH Royal Institute of Technology, Stockholm, Sweden; Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States","Huber C.M., Department of Bioengineeing, University of Pennsylvania, Philadelphia, PA, United States, Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, Philadelphia, PA, United States; Patton D.A., Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, Philadelphia, PA, United States; Maheshwari J., Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, Philadelphia, PA, United States; Zhou Z., Neuronic Engineering, KTH Royal Institute of Technology, Stockholm, Sweden; Kleiven S., Neuronic Engineering, KTH Royal Institute of Technology, Stockholm, Sweden; Arbogast K.B., Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, Philadelphia, PA, United States, Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States","Finite element (FE) modeling provides a means to examine how global kinematics of repetitive head loading in sports influences tissue level injury metrics. FE simulations of controlled soccer headers in two directions were completed using a human head FE model to estimate biomechanical loading on the brain by direction. Overall, headers were associated with 95th percentile peak maximum principal strains up to 0.07 and von Mises stresses up to 1450 Pa, and oblique headers trended toward higher values than frontal headers but below typical injury levels. These quantitative data provide insight into repetitive loading effects on the brain. © 2023 Informa UK Limited, trading as Taylor & Francis Group.","finite element modeling; head impact kinematics; injury biomechanics; Pediatrics","Biomechanics; Elasticity; Kinematics; Loading; Pediatrics; Sports; Structural design; Brain deformations; Element models; Finite element modeling; Finite elements simulation; Head impact; Head impact kinematic; Head loading; Impact kinematics; Injury biomechanics; Tissue levels; Finite element method","Alshareef A., Giudice J.S., Forman J., Shedd D.F., Reynier K.A., Wu T., Sochor S., Sochor M.R., Salzar R.S., Panzer M.B., Biomechanics of the human brain during dynamic rotation of the head, J Neurotrauma, 37, 13, pp. 1546-1555, (2020); Alvarez V.S., Halldin P., Kleiven S., The influence of neck muscle tonus and posture on brain tissue strain in Pedestrian Head Impacts, SAE Tech. 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Viano D.C., Pellman E.J., Concussion in professional football: biomechanics of the striking player–part 8, Neurosurgery, 56, 2, pp. 266-278, (2005); Weaver A.A., Danelson K.A., Stitzel J.D., Modeling brain injury response for rotational velocities of varying directions and magnitudes, Ann Biomed Eng, 40, 9, pp. 2005-2018, (2012); Yap Y.C., King A.E., Guijt R.M., Jiang T., Blizzard C., Breadmore M.C., Dickson T.C., Mild and repetitive very mild axonal stretch injury triggers cystoskeletal mislocalization and growth cone collapse, PLoS One, 12, 5, (2017); Zhang L., Yang K.H., King A.I., A proposed injury threshold for mild traumatic brain injury, J Biomech Eng, 126, 2, pp. 226-236, (2004)","K.B. Arbogast; Center for Injury Research and Prevention, Children’s Hospital of Philadelphia, Philadelphia, United States; email: arbogast@chop.edu","","Taylor and Francis Ltd.","10255842","","","","English","Comput. Methods Biomech. Biomed. Eng.","Article","Article in press","","Scopus","2-s2.0-85165259595" "Peker A.T.; Böge V.; Bailey G.S.; Wagman J.B.; Stoffregen T.A.","Peker, Alper Tunga (57206255267); Böge, Veysel (57219002814); Bailey, George S. (57218996985); Wagman, Jeffrey B. (6604071781); Stoffregen, Thomas A. (7004273351)","57206255267; 57219002814; 57218996985; 6604071781; 7004273351","Perception of Higher-Order Affordances for Kicking in Soccer","2023","Journal of Experimental Psychology: Human Perception and Performance","49","5","","623","634","11","2","10.1037/xhp0001108","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85160969980&doi=10.1037%2fxhp0001108&partnerID=40&md5=5ec7bb9696e5d6a37c29065554d4280b","School of Physical Education and Sport, Gumushane University, Turkey; Faculty of Sport Science, Selçuk University, Turkey; School of Kinesiology, University of Minnesota, United States; Department of Psychology, Illinois State University, United States","Peker A.T., School of Physical Education and Sport, Gumushane University, Turkey; Böge V., Faculty of Sport Science, Selçuk University, Turkey; Bailey G.S., School of Kinesiology, University of Minnesota, United States; Wagman J.B., Department of Psychology, Illinois State University, United States; Stoffregen T.A., School of Kinesiology, University of Minnesota, United States","We investigated the perception of higher-order interpersonal affordances for kicking that emerged from lower-order personal and interpersonal affordances in the context of soccer. Youth soccer players reported the minimum gap width between two confederates through which they could kick a ball. In Experiment 1,we independently manipulated the egocentric distance of gaps from participants, and the nominal role of the confederates, either as teammates or opponents. In Experiment 2, we additionally varied the direction in which the confederates were facing, either together (i.e., into the gap) or away (i.e., away from the gap). Perceived minimum kickable gap width was larger for farther egocentric distances, when confederates were identified as opponents rather than as teammates, and (in Experiment 2) when confederates faced toward, rather than away from the gap. In both experiments, these main effects were subsumed in statistically significant interactions. We argue that these interactions reveal perception of higher-order interpersonal affordances for kicking that emerged from the simultaneous influence of lower-order affordances. The results are compatible with the hypothesis that these higher-order affordances were perceived, as such, and were not additively combined from independent perception of underlying, lower-order affordances. © 2023 American Psychological Association","affordances; perception; soccer","Adolescent; Biomechanical Phenomena; Humans; Perception; Soccer; adolescent; biomechanics; human; perception; soccer","Adolph K. E., Hoch J. E., Motor development: Embodied, embedded, enculturated, and enabling, Annual Review of Psychology, 70, 1, pp. 141-164, (2019); Adolph K. E., Young J. W., Learning to move in the real world, (2021); Science, 373, 6555, pp. 620-621; Baggs E., All affordances are social: Foundations of a Gibsonian social ontology, Ecological Psychology, 33, 3-4, pp. 257-278, (2021); Bruineberg J., Chemero A., Rietveld E., General ecological information supports engagement with affordances for ‘higher’ cognition, Synthese, 196, 12, pp. 5231-5251, (2019); Carello C. S., Anderson K. 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A., Shockley K., Cummins-Sebree S., Perceiving affordances for joint actions, Perception, 39, 12, pp. 1624-1644, (2010); Delucia P. R., Jones K. S., Gibson and Crooks (1938): Vision and validation, TheAmerican Journal ofPsychology, 130, 4, pp. 413-429, (2017); Fajen B. R., Affordance-based control of visually guided action, Ecological Psychology, 19, 4, pp. 383-410, (2007); Faul F., Erdfelder E., Lang A. G., Buchner A., G*Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences, Behavior Research Methods, 39, 2, pp. 175-191, (2007); Gibson J. J., The ecological approach to visual perception, (1986); Gibson J. J., Crooks L. E., A theoretical field-analysis of automobile-driving, The American Journal of Psychology, 51, 3, (1938); Heft H., A methodological note on overestimates of reaching distance: Distinguishing between perceptual and analytical judgments, Ecological Psychology, 5, 3, pp. 255-271, (1993); Heft H., Ecological psychology as social psychology?, Theory & Psychology, 30, 6, pp. 813-836, (2020); Higuchi T., Murai G., Kijima A., Seya Y., Wagman J. B., Imanaka K., Athletic experience influences shoulder rotations when running through apertures, Human Movement Science, 30, 3, pp. 534-549, (2011); Hove P., Riley M. A., Shockley K., Perceiving affordances of hockey sticks by dynamic touch, Ecological Psychology, 18, 3, (2006); Kalenine S., Wamain Y., Decroix J., Coello Y., Conflict between object structural and functional affordances in peripersonal space, Cognition, 155, pp. 1-7, (2016); Kazak A. E., Editorial: Journal article reporting standards, American Psychologist, 73, 1, pp. 1-2, (2018); Kimmel M., Rogler C. R., Affordances in interaction: The case of Aikido, Ecological Psychology, 30, 3, pp. 195-223, (2018); Lee D. N., Young D. S., McLaughlin C. M., A roadside simulation of road crossing for children, Ergonomics, 27, 12, pp. 1271-1281, (1984); Mantel B., Stoffregen T. A., Campbell A., Bardy B. G., Exploratory movement generates higher-order information that is sufficient for accurate perception of scaled egocentric distance, PLoS One, 10, 4, (2015); Mark L. S., Eyeheight-scaled information about affordances: A study of sitting and stair climbing, Journal of Experimental Psychology: Human Perception and Performance, 13, 3, pp. 361-370, (1987); Marsh K. L., Johnston L., Richardson M. J., Schmidt R. C., Toward a radically embodied, embedded social psychology, European Journal of Social Psychology, 39, 7, pp. 1217-1225, (2009); Marti G., Morice A. P. H., Montagne G., Drivers’ decisionmaking when attempting to cross an intersection results from choice between affordances, Frontiers in Human Neuroscience, 8, (2015); Natraj N., Poole V., Mizelle J. C., Flumini A., Borghi A. M., Wheaton L. A., Context and hand posture modulate the neural dynamics of tool-object perception, Neuropsychologia, 51, 3, pp. 506-519, (2013); Passos P., Araujo D., Volossovitch A., Performance analysis in team sports, (2016); Passos P., Cordovil R., Fernandes O., Barreiros J., Perceiving affordances in rugby union, Journal of Sport Sciences, 30, 11, (2012); Peker A. T., Boge V., Bailey G., Wagman J. B., Stoffregen T. A., Perception of affordances in soccer: Kicking for power versus kicking for precision, Research Quarterly for Exercise and Sport, 93, 1, pp. 144-152, (2020); Peker A. T., Boge V., Bailey G., Wagman J. B., Stoffregen T. A., APAUKonya higher order affordances in soccer 2020-22, (2023); Peker A. T., Erkmen N., Kocaoglu Y., Bayraktar Y., Arguz A., Wagman J. B., Stoffregen T. A., Perception of affordances for vertical and horizontal jumping in children: Gymnasts versus non-athletes, Research Quarterly for Exercise and Sport, 92, 4, pp. 770-778, (2020); Ramenzoni V. C., Davis T. J., Riley M. A., Shockley K., Perceiving action boundaries: Learning effects in perceiving maximum jumping-reach affordances, Attention, Perception & Psychophysics, 72, 4, pp. 1110-1119, (2010); Richardson M. J., Marsh K. L., Baron R. M., Judging and actualizing intrapersonal and interpersonal affordances, Journal of Experimental Psychology: Human Perception and Performance, 33, 4, pp. 845-859, (2007); Shockley K., Grocki M., Carello C., Turvey M. T., Somatosensory attunement to the rigid body laws, Experimental Brain Research, 136, 1, pp. 133-137, (2001); Stoffregen T. A., Affordances and events, Ecological Psychology, 12, 1, pp. 1-28, (2000); Stoffregen T. A., Affordances as properties of the animalenvironment system, Ecological Psychology, 15, 2, pp. 115-134, (2003); Thomas B. J., Hawkins M. M., Nalepka P., Perceiver as polar planimeter: Direct perception of jumping, reaching, and jump-reaching affordances for the self and others, Psychological Research, 82, 4, pp. 665-674, (2018); Thomas B. J., Riley M. A., Remembered affordances reflect the fundamentally action-relevant, context-specific nature of visual perception, Journal of Experimental Psychology: Human Perception and Performance, 40, 6, pp. 2361-2371, (2014); Thomas B. J., Riley M. A., The selection and usage of information for perceiving and remembering intended and unintended object properties, Journal of Experimental Psychology: Human Perception and Performance, 41, 3, pp. 807-815, (2015); Tomono T., Makino R., Furuyama N., Mishima H., How does a walker pass between two people standing in different configurations? Influence of personal space on aperture passing methods, Frontiers in Psychology, 10, (2019); Turvey M. T., Lectures on perception: An ecological perspective, Cognition, 73, 2, pp. B17-B26, (2019); Van Acker R., Valenti S. S., Perception of social affordances by children with mild handicapping conditions: Implications for social skills research and training, Ecological Psychology, 1, 4, pp. 383-405, (1989); Wagman J. B., Bai J., Smith P. J. K., Nesting in perception of affordances for stepping and leaping, Attention, Perception, & Psychophysics, 78, 6, pp. 1771-1780, (2016); Wagman J. B., Caputo S. E., Stoffregen T. A., Hierarchical nesting of affordances in a tool use task, Journal of Experimental Psychology: HumanPerception & Performance, 42, 10, pp. 1627-1642, (2016); Wagman J. B., Caputo S. E., Stoffregen T. A., Sensitivity to hierarchical relations among affordances in the assembly of asymmetric tools, Experimental Brain Research, 234, 10, pp. 2923-2933, (2016); Wagman J. B., Carello C., Affordances and inertial constraints on tool use, EcologicalPsychology, 13, 3, pp. 173-195, (2010); Wagman J. B., Cialdella V. T., Stoffregen T. A., Higher order affordances for reaching: Perception and performance, Quarterly Journal of Experimental Psychology, 72, 5, pp. 1200-1211, (2019); Wagman J. B., Stoffregen T. A., It doesn’t add up: Nested affordances for reaching are perceived as a complex particular, Attention, Perception, & Psychophysics, 82, 8, pp. 3832-3841, (2020); Wagman J. B., Stoffregen T. A., Bai J., Schloesser D. S., Perceiving nested affordances for another person’s actions, Quarterly Journal of Experimental Psychology, 71, 3, pp. 790-799, (2017); Wagman J. B., Thomas B. J., McBride D. M., Perceiving and remembering affordances for others are continuous processes, Experimental Psychology, 65, 6, pp. 385-392, (2019); Walter H. J., Li R., Wagman J. B., Stoffregen T. A., Adaptive perception of changes in affordances for walking on a ship at sea, Human Movement Science, 64, pp. 28-37, (2019); Warren W. H., Perceiving affordances: Visual guidance of stair climbing, Journal of Experimental Psychology: Human Perception and Performance, 10, 5, pp. 683-703, (1984); Warren W. H., Whang S., Visual guidance of walking through apertures: Body-scaled information for affordances, Journal of Experimental Psychology: Human Perception and Performance, 13, 3, pp. 371-383, (1987); Yonas A., Hartman B., Perceiving the affordance of contact in 4-and 5-month-old infants, Child Development, 64, 1, pp. 298-308, (1993); Zheng R., van der Kamp J., Song X., Savelsbergh G., Affordance-based control in deceptive and non-deceptive penalties in soccer goalkeeping: Gender matters!, Psychology of Sport & Exercise, 58, (2022)","T.A. Stoffregen; School of Kinesiology, University of Minnesota, Minneapolis, 1900 University Ave SE, 55455, United States; email: tas@umn.edu","","American Psychological Association","00961523","","JPHPD","37261770","English","J. Exp. Psychol. Hum. Percept. Perform.","Article","Final","","Scopus","2-s2.0-85160969980" "Romero V.; Lahti J.; Castaño Zambudio A.; Mendiguchia J.; Jiménez Reyes P.; Morin J.-B.","Romero, Valentin (57220806423); Lahti, Johan (57201520450); Castaño Zambudio, Adrián (57191843964); Mendiguchia, Jurdan (16239420700); Jiménez Reyes, Pedro (36696240200); Morin, Jean-Benoît (55917329600)","57220806423; 57201520450; 57191843964; 16239420700; 36696240200; 55917329600","Effects of Fatigue Induced by Repeated Sprints on Sprint Biomechanics in Football Players: Should We Look at the Group or the Individual?","2022","International Journal of Environmental Research and Public Health","19","22","14643","","","","2","10.3390/ijerph192214643","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85142494974&doi=10.3390%2fijerph192214643&partnerID=40&md5=c687471b0ad7039b833fa88f08227c5d","Centre for Sport Studies, Rey Juan Carlos University, Madrid, 28942, Spain; Laboratory of Human Motricity, Education Sport and Health (LAMHESS), Université Côte d’Azur, Nice, F-06200, France; Department of Physical Therapy, ZENTRUM Rehab and Performance Center, Barañain, 31010, Spain; Inter-University Laboratory of Human Movement Biology (LIBM EA 7424), University of Lyon, University Jean Monnet, Saint Etienne, F-42023, France","Romero V., Centre for Sport Studies, Rey Juan Carlos University, Madrid, 28942, Spain; Lahti J., Laboratory of Human Motricity, Education Sport and Health (LAMHESS), Université Côte d’Azur, Nice, F-06200, France; Castaño Zambudio A., Centre for Sport Studies, Rey Juan Carlos University, Madrid, 28942, Spain; Mendiguchia J., Department of Physical Therapy, ZENTRUM Rehab and Performance Center, Barañain, 31010, Spain; Jiménez Reyes P., Centre for Sport Studies, Rey Juan Carlos University, Madrid, 28942, Spain; Morin J.-B., Inter-University Laboratory of Human Movement Biology (LIBM EA 7424), University of Lyon, University Jean Monnet, Saint Etienne, F-42023, France","The aim of this study was to analyse the influence of fatigue on sprint biomechanics. Fifty-one football players performed twelve maximal 30 m sprints with 20 s recovery between each sprint. Sprint kinetics were computed from running speed data and a high-frequency camera (240 Hz) was used to study kinematic data. A cluster analysis (K-mean clustering) was conducted to classify individual kinematic adaptations. A large decrease in maximal power output and less efficiency in horizontally orienting the ground reaction force were observed in fatigued participants. In addition, individual changes in kinematic components were observed, and, according to the cluster analysis, five clusters were identified. Changes in trunk, knee, and hip angles led to an overall theoretical increase in hamstring strain for some players (Cluster 5, 20/51) but to an overall decrease for some others (Cluster 1, 11/51). This study showed that the repeated sprint ability (RSA) protocol had an impact on both kinetics and kinematics. Moreover, fatigue affected the kinematics in a different way for each player, and these individual changes were associated with either higher or lower hamstring length and thus strain. © 2022 by the authors.","biomechanics; fatigue; football; hamstrings; injuries","Athletic Performance; Biomechanical Phenomena; Football; Humans; Muscle Fatigue; Soccer; biomechanics; cluster analysis; fatigue; kinematics; kinetics; physical activity; sport; adult; Article; biomechanics; body mass; cluster analysis; fatigue; football player; ground reaction force; hamstring muscle; hip angle; human; human experiment; injury; kinematics; kinetics; male; muscle strength; running; software; statistical analysis; velocity; athletic performance; biomechanics; football; muscle fatigue; soccer","Dellal A., Chamari K., Wong D.P., Ahmaidi S., Keller D., Barros R., Bisciotti G.N., Carling C., Comparison of Physical and Technical Performance in European Soccer Match-Play: FA Premier League and La Liga, Eur. J. 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Am, 27, pp. 217-236, (2016); Simoni L., Pancani S., Vannetti F., Macchi C., Pasquini G., Relationship between Lower Limb Kinematics and Upper Trunk Acceleration in Recreational Runners, J. Healthc. Eng, 2020, (2020); Sado N., Yoshioka S., Fukashiro S., The Three-Dimensional Kinetic Behaviour of the Pelvic Rotation in Maximal Sprint Running, Sports Biomech, 16, pp. 258-271, (2017); Chumanov E.S., Heiderscheit B.C., Thelen D.G., The Effect of Speed and Influence of Individual Muscles on Hamstring Mechanics during the Swing Phase of Sprinting, J. Biomech, 40, pp. 3555-3562, (2007); Wilmes E., de Ruiter C.J., Bastiaansen B.J.C., Goedhart E.A., Brink M.S., van der Helm F.C.T., Savelsbergh G.J.P., Associations between Hamstring Fatigue and Sprint Kinematics during a Simulated Football (Soccer) Match, Med. Sci. Sports Exerc, 53, pp. 2586-2595, (2021); Baumert P., Temple S., Stanley J.M., Cocks M., Strauss J.A., Shepherd S.O., Drust B., Lake M.J., Stewart C.E., Erskine R.M., Neuromuscular Fatigue and Recovery after Strenuous Exercise Depends on Skeletal Muscle Size and Stem Cell Characteristics, Sci. Rep, 11, (2021)","V. Romero; Centre for Sport Studies, Rey Juan Carlos University, Madrid, 28942, Spain; email: valentinromero1923@gmail.com","","MDPI","16617827","","","36429363","English","Int. J. Environ. Res. Public Health","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85142494974" "Abdelraouf O.R.; Abdel-aziem A.A.","Abdelraouf, Osama Ragaa (56019515400); Abdel-aziem, Amr Almaz (53881053500)","56019515400; 53881053500","Ankle and foot mechanics in individuals with chronic ankle instability during shod walking and barefoot walking: A cross-sectional study","2021","Chinese Journal of Traumatology - English Edition","24","3","","174","179","5","2","10.1016/j.cjtee.2021.02.010","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102737878&doi=10.1016%2fj.cjtee.2021.02.010&partnerID=40&md5=7337c50050ae60a859342dfe394861dc","Department of Biomechanics, Faculty of Physical Therapy, Cairo University, Egypt; Department of Physical Therapy, College of Applied Medical Science, Taif University, Saudi Arabia","Abdelraouf O.R., Department of Biomechanics, Faculty of Physical Therapy, Cairo University, Egypt; Abdel-aziem A.A., Department of Physical Therapy, College of Applied Medical Science, Taif University, Saudi Arabia","Purpose: This study evaluated the angular kinematic and moment of the ankle and foot during shod walking and barefoot walking in individuals with unilateral chronic ankle instability (CAI). Methods: Recreational soccer players with unilateral CAI were recruited for this cross sectional study conducted between January and August 2019. A total of 40 participants were screened for eligibility but only 31 met the inclusion criteria based on the methods of Delahunt et al and Gribble et al. Except for 3 participants not attending the evaluation session, 28 participants were finally included. A three dimensional motion analysis system made up of ProReflex motion capture unit and an AMTIb Kistler force plate, embedded in the middle of nine meter walkway, were used to assess the ankle and foot angles and moment during shod walking and barefoot walking conditions. A Statistical Package for Social Sciences (version 20.0) was used to analyze data. Results: During shod walking, the ankle joint plantar-flexion range of motion (ROM) at 10% of the gait cycle (GC) and dorsiflexion ROM at 30% of the GC were significantly higher than those during barefoot walking for both feet (p = 0.001, 0.001, 0.027, and 0.036 respectively). The inversion ROM during shod walking was significantly higher than that during barefoot walking for both feet at 10% and 30% of the GC (p = 0.001. 0.001, 0.001, and 0.042 respectively). At 10% of the GC, the eversion moment was significantly higher between barefoot and shod walking for both feet (both p = 0.001). At 30% of the GC, there was no significant difference between shod and barefoot walking plantar-flexion moment of both feet (p = 0.975 and 0.763 respectively), and the eversion moment of both feet (p = 0.116 and 0.101 respectively). Conclusion: At the early stance, shod walking increases the ankle plantar-flexion and foot inversion ROM, and decreases the eversion moment for both feet in subjects with unilateral CAI. Therefore, the foot wearing condition should be considered during evaluation of ankle and foot kinematics and kinetics. © 2021 Chinese Medical Association","Barefoot walking; Foot; Gait; Recurrent ankle sprain; Shod walking","Ankle; Ankle Joint; Biomechanical Phenomena; Cross-Sectional Studies; Humans; Shoes; Walking; adult; ankle; ankle injury; ankle instability; ankle sprain; Article; barefoot walking; chronic ankle instability; clinical article; clinical assessment; clinical evaluation; controlled study; cross-sectional study; foot; force; gait; human; kinematics; male; outcome assessment; range of motion; recreational game; shod walking; soccer player; standing; walking; ankle; biomechanics; shoe","Lythgo N., Wilson C., Galea M., Basic gait and symmetry measures for primary school-aged children and young adults whilst walking barefoot and with shoes, Gait Posture, 30, pp. 502-506, (2009); Dames K.D., Smith J.D., Effects of load carriage and footwear on spatiotemporal parameters, kinematics, and metabolic cost of walking, Gait Posture, 42, pp. 122-126, (2015); Zhang X., Paquette M.R., Zhang S., A comparison of gait biomechanics of flipflops, sandals, barefoot and shoes, J Foot Ankle Res, 6, (2013); Majumdar D., Banerjee P.K., Majumdar D., Et al., Temporal spatial parameters of gait with barefoot, bathroom slippers, and military boots, Indian J Physiol Pharmacol, 50, pp. 33-40, (2006); Keenan G.S., Franz J.R., Dicharry J., Et al., Lower limb joint kinetics in walking: the role of industry recommended footwear, Gait Posture, 33, pp. 350-355, (2011); van Schie C.H., A review of the biomechanics of the diabetic foot, Int J Low Extrem Wounds, 4, pp. 160-170, (2005); Sacco I.C., Hamamoto A.N., Gomes A.A., Et al., Role of ankle mobility in foot rollover during gait in individuals with diabetic neuropathy, Clin Biomech, 24, pp. 687-692, (2009); Robbins S.E., Gouw G.J., Hanna A.M., Running-related injury prevention through innate impact-moderating behavior, Med Sci Sports Exerc, 21, pp. 130-139, (1989); Robbins S.E., Hanna A.M., Running-related injury prevention through barefoot adaptations, Med Sci Sports Exerc, 19, pp. 148-156, (1987); van Gent R.N., Siem D., van Middelkoop M., Et al., Incidence and determinants of lower extremity running injuries in long distance runners: a systematic review, Br J Sports Med, 41, pp. 469-480, (2007); van Rijn R.M., van Os A.G., Bernsen R.M., Et al., What is the clinical course of acute ankle sprains? A systematic literature review, Am J Med, 121, pp. 324-331, (2008); Gribble P.A., Bleakley C.M., Caulfield B.M., Et al., 2016 consensus statement of the International Ankle Consortium: prevalence, impact and long-term consequences of lateral ankle sprains, Br J Sports Med, 24, pp. 1493-1495, (2016); Moisan G., Descarreaux M., Cantin V., Effects of chronic ankle instability on kinetics, kinematics and muscle activity during walking and running: a systematic review, Gait Posture, 52, pp. 381-399, (2017); Dingenen B., Deschamps K., Delchambre F., Et al., Effect of taping on multi-segmental foot kinematic patterns during walking in persons with chronic ankle instability, J Sci Med Sport, 20, pp. 835-840, (2017); Abdelraouf O.R., Elhafez S.M., Abdel-aziem A.A., Alterations in trunk and lower extremity joints mechanics during shod walking in individuals with chronic ankle instability, Int J Heal Rehabil Sci, 1, pp. 44-57, (2012); Wisthoff B., Matheny S., Struminger A., Et al., Ankle strength deficits in a cohort of collegiate athletes with chronic ankle instability, J Sport Rehabil, 17, pp. 1-22, (2018); Abdel-aziem A.A., Draz A.H., Chronic ankle instability alters eccentric eversion/inversion and dorsiflexion/plantarflexion ratio, J Back Musculoskelet Rehabil, 27, pp. 47-53, (2014); Hopkins J.T., Coglianese M., Glasgow P., Et al., Alterations in evertor/invertor muscle activation and center of pressure trajectory in participants with functional ankle instability, J Electromyogr Kinesiol, 22, pp. 280-285, (2012); Koldenhoven R.M., Feger M.A., Fraser J.J., Et al., Surface electromyography and plantar pressure during walking in young adults with chronic ankle instability, Knee Surg Sports Traumatol Arthrosc, 24, pp. 1060-1070, (2016); Delahunt E., Monaghan K., Caulfield B., Altered neuromuscular control and ankle joint kinematics during walking in subjects with functional instability of the ankle joint, Am J Sports Med, 34, pp. 1970-1976, (2006); Santilli V., Frascarelli M.A., Paoloni M., Et al., Peroneus longus muscle activation pattern during gait cycle in athletes affected by functional ankle instability: a surface electromyographic study, Am J Sports Med, 33, pp. 1183-1187, (2005); Delahunt E., Coughlan G.F., Caulfield B., Et al., Inclusion criteria when investigating insufficiencies in chronic ankle instability, Med Sci Sports Exerc, 42, pp. 2106-2121, (2010); Gribble P.A., Delahunt E., Bleakley C.M., Et al., Selection criteria for patients with chronic ankle instability in controlled research: a position statement of the international ankle consortium, J Athl Train, 49, pp. 121-127, (2014); Sheth P., Yu B., Laskowski E.R., Et al., Ankle disk training influences reaction times of selected muscles in a simulated ankle sprain, Am J Sports Med, 25, pp. 538-543, (1997); Oberg T., Karsznia A., Oberg K., Basic gait parameters: reference data for normal subjects, 10-79 years of age, J Rehabil Res Dev, 30, pp. 210-223, (1993); Bishop C., Thewlis D., Uden H., Et al., A radiological method to determine the accuracy of motion capture marker placement on palpable anatomical landmarks through a shoe, Footwear Sci, 3, pp. 169-177, (2011); Monaghan K., Delahunt E., Caulfield B., Ankle function during gait in patients with chronic ankle instability compared to controls, Clin Biomech, 21, pp. 168-174, (2006); Kung S.M., Fink P.W., Hume P., Et al., Kinematic and kinetic differences between barefoot and shod walking in children, Footwear Sci, 7, pp. 95-105, (2015); Sousa A., Leite J., Costa B., Et al., Bilateral proprioceptive evaluation in individuals with unilateral chronic ankle instability, J Athl Train, 52, pp. 360-367, (2017); Forkin D.M., Koczur C., Battle R., Et al., Evaluation of kinesthetic deficits indicative of balance control in gymnasts with unilateral chronic ankle sprains, J Orthop Sports Phys Ther, 23, pp. 245-250, (1996); Campbell K.J., Wilson K.J., LaPrade R.F., Et al., Normative rearfoot motion during barefoot and shod walking using biplane fluoroscopy, Knee Surg Sports Traumatol Arthrosc, 24, pp. 1402-1408, (2016); Drewes L.K., McKeon P.O., Paolini G., Et al., Altered ankle kinematics and shank-rear-foot coupling in those with chronic ankle instability, J Sport Rehabil, 18, pp. 375-388, (2009); De Ridder R., Willems T., Vanrenterghem J., Et al., Gait kinematics of subjects with ankle instability using a multisegmented foot model, Med Sci Sports Exerc, 45, pp. 2129-2136, (2013); Nordin M., Frankel V., Basic Biomechanics of the Musculoskeletal System, (2001); Wright I.C., Neptune R.R., van den Bogert A.J., Et al., The influence of foot positioning on ankle sprains, J Biomech, 33, pp. 513-519, (2000); Karlsson J., Eriksson B.I., Renstrom P.A., Subtalar ankle instability. A review, Sport. Med., 24, pp. 337-346, (1997); Tropp H., Commentary: functional ankle instability revisited, J Athl Train, 37, pp. 512-515, (2002); Riemann B.L., Is there a link between chronic ankle instability and postural instability?, J Athl Train, 37, pp. 386-393, (2002); Hiller C.E., Nightingale E.J., Lin C.W., Et al., Characteristics of people with recurrent ankle sprains: a systematic review with meta-analysis, Br J Sports Med, 45, pp. 660-672, (2011); Yen S.C., Chui K.K., Corkery M.B., Et al., Hip-ankle coordination during gait in individuals with chronic ankle instability, Gait Posture, 53, pp. 193-200, (2017)","A.A. Abdel-aziem; Department of Physical Therapy, College of Applied Medical Science, Taif University, Saudi Arabia; email: amralmaz@tu.edu.sa","","Elsevier B.V.","10081275","","CJTRF","33757697","English","Chin. J. Traumatol. Eng. Ed.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85102737878" "Monteiro R.L.M.; Bedo B.L.S.; Monteiro P.H.M.; de Andrade F.S.P.; Moura F.A.; Cunha S.A.; Torres R.S.; Memmert D.; Santiago P.R.P.","Monteiro, Rafael Luiz Martins (57771172600); Bedo, Bruno Luiz Souza (56790057800); Monteiro, Pedro Henrique Martins (57211106969); de Andrade, Felipe dos Santos Pinto (57214191371); Moura, Felipe Arruda (16417087000); Cunha, Sergio Augusto (16416879600); Torres, Ricardo da Silva (56385629000); Memmert, Daniel (16039986900); Santiago, Paulo Roberto Pereira (36098423400)","57771172600; 56790057800; 57211106969; 57214191371; 16417087000; 16416879600; 56385629000; 16039986900; 36098423400","Penalty feet positioning rule modification and laterality effect on soccer goalkeepers’ diving kinematics","2022","Scientific Reports","12","1","18493","","","","2","10.1038/s41598-022-21508-6","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85141163082&doi=10.1038%2fs41598-022-21508-6&partnerID=40&md5=0aba21395c849ab33eaa8f820c3b7cbc","Biomechanics and Motor Control Laboratory, School of Physical Education and Sport of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, 14040-907, Brazil; Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, 14049-900, Brazil; School of Physical Education and Sport, University of São Paulo (USP), São Paulo, 05508-030, Brazil; Laboratory of Applied Biomechanics, Department of Sport Sciences, Centre of Physical Education and Sport, State University of Londrina, Londrina, 86057‑970, Brazil; Department of Sport Sciences, University of Campinas, Campinas, Brazil; Department of ICT and Natural Sciences, NTNU – Norwegian University of Science and Technology, Aalesund, Norway; Institute of Exercise Training and Sport Informatics, German Sport University Cologne, Am Sportpark Müngersdorf 6, Cologne, 50933, Germany","Monteiro R.L.M., Biomechanics and Motor Control Laboratory, School of Physical Education and Sport of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, 14040-907, Brazil, Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, 14049-900, Brazil; Bedo B.L.S., School of Physical Education and Sport, University of São Paulo (USP), São Paulo, 05508-030, Brazil; Monteiro P.H.M., School of Physical Education and Sport, University of São Paulo (USP), São Paulo, 05508-030, Brazil; de Andrade F.S.P., Biomechanics and Motor Control Laboratory, School of Physical Education and Sport of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, 14040-907, Brazil; Moura F.A., Laboratory of Applied Biomechanics, Department of Sport Sciences, Centre of Physical Education and Sport, State University of Londrina, Londrina, 86057‑970, Brazil; Cunha S.A., Department of Sport Sciences, University of Campinas, Campinas, Brazil; Torres R.S., Department of ICT and Natural Sciences, NTNU – Norwegian University of Science and Technology, Aalesund, Norway; Memmert D., Institute of Exercise Training and Sport Informatics, German Sport University Cologne, Am Sportpark Müngersdorf 6, Cologne, 50933, Germany; Santiago P.R.P., Biomechanics and Motor Control Laboratory, School of Physical Education and Sport of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, 14040-907, Brazil, Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, 14049-900, Brazil","In 2019, a new rule was applied in soccer. It allows the goalkeeper to have only one foot or part of it on the goal line when the kicker hits the ball, unlike the previous rule that determined the goalkeeper should have both feet on the line. The purpose of the present study was to analyze how the change in the rule and the lower limbs laterality influences on the diving save kinematic performance in penalties. Six goalkeepers, two professionals and four amateurs, performed a total of 20 dives in the laboratory and had their force and impulse exerted by the lower limb and displacement/velocity data from the center of body mass collected through force plates and kinematic analysis. The side preference was collected through an inventory. The results showed that goalkeepers dive further (p < 0.001) and faster (p < 0.001) when diving according to the new rule. Dives for the non-dominant side presented higher values than the trials for the dominant side in mediolateral (p = 0.02) and resultant (p = 0.03) displacements. Concluding, the goalkeepers performed better with the new rule in the analyzed variables and the lower limb preference has influenced only the mediolateral and resultant displacement. © 2022, The Author(s).","","Biomechanical Phenomena; Diving; Functional Laterality; Soccer; article; diving; foot; hemispheric dominance; human; kinematics; lower limb; punishment; soccer; biomechanics; hemispheric dominance","Simiyu W.W.N., Analysis of goals scored in the 2010 world cup soccer tournament held in south africa, J. Phys. Educ. Sport, 13, 1, pp. 6-13, (2013); Armatas V., Yiannakos A., Analysis and evaluation of goals scored in 2006 world cup, J. Sport Heal. Res., 2, pp. 119-128, (2010); Kubayi A., Analysis of goal scoring patterns in the 2018 fifa world cup, J. Hum. Kinetics, 71, pp. 205-210, (2020); Kubayi A., Toriola A., Trends of goal scoring patterns in soccer: A retrospective analysis of five successive fifa world cup tournaments, J. Hum. 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Sport Exerc., 43, pp. 137-143, (2019); Ruas C., Brown L., Pinto R., Lower-extremity side-to-side strength asymmetry of professional soccer players according to playing position, Kinesiology, 47, pp. 188-192, (2015); Magalhaes J., Oliveira J., Ascensao A., Soares J., Isokinetic strength assessment in athletes of different sports, ages, gender and positional roles, Rev. Port Cienc. Desporto, 1, pp. 13-21, (2001); Lees A., Nolan L., The biomechanics of soccer: A review, J. Sports Sci., 16, pp. 211-234, (1998); Clemente F.M., Et al., Leg dominance and performance in change of directions tests in young soccer players, Sci. Rep., 12, pp. 1-9, (2022); Cao Z., Hidalgo Martinez G., Simon T., Wei S., Sheikh Y.A., Openpose: Realtime multi-person 2d pose estimation using part affinity fields, IEEE Trans. Pattern Anal. Mach. Intell., (2019); Simon T., Joo H., Matthews I., Sheikh Y., Hand keypoint detection in single images using multiview bootstrapping, In CVPR, (2017); Cao Z., Simon T., Wei S.-E., Sheikh Y., Realtime multi-person 2d pose estimation using part affinity fields, In CVPR, (2017); Wei S.-E., Ramakrishna V., Kanade T., Sheikh Y., Convolutional pose machines, In CVPR, (2016); Vieira L.H.P., Et al., Kicking performance and muscular strength parameters with dominant and nondominant lower limbs in brazilian elite professional futsal players, J. Appl. Biomech., 32, pp. 578-585, (2016); Monteiro R., Datadivinggoalkeepers, (2022)","P.R.P. Santiago; Biomechanics and Motor Control Laboratory, School of Physical Education and Sport of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, 14040-907, Brazil; email: paulosantiago@usp.br","","Nature Research","20452322","","","36323704","English","Sci. Rep.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85141163082" "Fattah O.A.; Atiyat K.; Mazahreh J.; Jarrad M.","Fattah, Osama Abdel (57204933041); Atiyat, Khaled (57204928057); Mazahreh, Jad (59019870100); Jarrad, Maha (58749215000)","57204933041; 57204928057; 59019870100; 58749215000","The supporting foot as a kinematic indicator of penalty kick direction in soccer","2023","Journal of Physical Education and Sport","23","11","358","3142","3146","4","3","10.7752/jpes.2023.11358","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85178917660&doi=10.7752%2fjpes.2023.11358&partnerID=40&md5=4564631df115f67850638d6f3ed23f65","School of sports science, the University of Jordan, Amman, Jordan; Faculty of Physical Education and Sports Sciences, Palestine Technical University – Kadoorie, Jordan","Fattah O.A., School of sports science, the University of Jordan, Amman, Jordan; Atiyat K., School of sports science, the University of Jordan, Amman, Jordan; Mazahreh J., School of sports science, the University of Jordan, Amman, Jordan; Jarrad M., Faculty of Physical Education and Sports Sciences, Palestine Technical University – Kadoorie, Jordan","The objective of this study was to discern the direction of the supporting foot, contact time, and patterns involved in penalty kicks in soccer. The researchers employed a descriptive analytical approach, utilizing videos from the World Cup spanning the years 2002 to 2022, downloaded from the official website of the International Federation of Association Football (FIFA). The analysis of 160 penalty kicks was conducted using sports analysis software, Kinovea (version 0.9.5-x64.exe). The study's goals were accomplished through the application of means, frequencies, and percentages, using SPSS version 24, with a confidence level of 95%. The study results revealed that the supporting foot direction in (83.75) % of the analyzed penalty kicks was in the same direction as the ball's trajectory, while (16.25) % were not in the same direction. The researchers also found that (82.83) % of the penalty kicks where the supporting foot direction matched the ball's direction resulted in goals, while (17.17) % were unsuccessful attempts. In addition, the contact time means (0.122) seconds. Also, the pattern of penalty kick placement in the World Cup indicated that (36.25) % were directed to the left, (55) % to the right, and (8.75) % toward the central. Based on the study's findings, it can be concluded that the direction of the supporting foot, contact time, and analysis of the penalty kick pattern in the FIFA World Cup can serve as additional indicators for goalkeepers. Hence, these indicators can be utilized to develop goalkeeper strategies for predicting the motion trajectory of a penalty kick. Therefore, the coaches should focus more on drills that enhance goalkeepers' reactions and further studies could also be conducted on different samples, such as youth players and female athletes. © JPES.","Analysis; Biomechanics; Football; Penalty kicks; World Cup","","Alcock A., Analysis of Direct Shots at Goal from Free Kicks in Elite Women’s Football, (2010); Bar-Eli M., Azar O., Ritov I., Keidar-Levin Y., Schein G., Action bias among elite soccer goalkeepers: The case of penalty kicks, Journal of Economic Psychology, 28, pp. 606-621, (2007); Castellanos S., Farhadi A., Suarez D., Motion Analysis and Biomechanics of the Side-Foot Soccer Kick, Aquila: The FGCU Student Journal, 1, pp. 1-9, (2014); Dicks M., Button C., Davids K., Availability of advance visual information constrains association-football goalkeeping performance during penalty kicks, Perception, 39, pp. 1111-1124, (2010); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, pp. 293-299, (2002); Farina A. R., Fabrica G., Tambusso P. S., Alonso R., Taking the goalkeeper’s side in association football penalty kicks, Int. J. Perform. Anal. Sport, 13, pp. 96-109, (2013); Finnoff J. T., Newcomer K., Laskowski E. R., A valid and reliable method for measuring the kicking accuracy of soccer players, Journal of Science and Medicine in Sport Journal of Science and Medicine in Sport, 5, 4, pp. 348-353, (2002); Furley P., Noel B., Memmert D., Attention towards the goalkeeper and distraction during penalty shootouts in association football: A retrospective analysis of penalty shootouts from 1984-2012, Journal of Sports Sciences, 35, 9, pp. 873-879, (2017); Gaetano A., Analysis and comparison of the goalkeeper's role in past and modern soccer: a pilot study. Journal of Physical Education and Sport, 23(3), 564-568, (2023); Gilbourne D., Sports participation, sports injury and altered images of self: An autobiographical narrative of a lifelong legacy, Reflective Practice, 3, pp. 71-88, (2002); Hun L. J., Science hidden in penalty kicks Sport, The Sport Kyunghyang Shinmun, (2014); Katis A., Kellis E., Three-dimensional kinematics and ground reaction forces during the instep and outstep soccer kicks in pubertal players, Journal of Sports Sciences, 28, 11, pp. 1233-1241, (2010); Kubayi A., Toriola A., Trends of goal scoring patterns in soccer: A retrospective analysis of five successive fifa World Cup Tournaments, J. Hum. Kinetics, 69, pp. 231-238, (2019); Kubayi A., Analysis of goal scoring patterns in the 2018 FFA world Cup, J. Hum. Kinetics, 71, pp. 205-210, (2020); Lees A., Asai T., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, 8, pp. 805-817, (2010); Lees A., Owens L., Early visual cues associated with a directional place kick in soccer, Sports Biomechanics, 10, pp. 125-134, (2011); Marco O., Pavol P., Martin M., Matej B., Technical–tactical profile of an elite soccer goalkeeper, Journal of Physical Education and Sport, 22, 1, pp. 38-46, (2022); Memmert D., Huttermann S., Hagemann N., Loffing F., Strauss B., Dueling in the penalty box: Evidence-based recommendations on how shooters and goalkeepers can win penalty shootouts in soccer, Int Rev Sport Exerc Psychol, 6, 1, pp. 209-229, (2013); Mu S. J., Jeong K. J., Rim P. H., Seon K. S., Kinematic analysis of lower extremity segments according to changes in goals during soccer inside penalty kick motions, Korean Journal of Sport Biomechanics, 23, 2, pp. 117-123, (2013); Noel B., Furley P., van der Kamp J., Dicks M., Memmert D., The development of a method for identifying penalty kick strategies in association football, J. Sports Sci, 33, pp. 1-10, (2015); Paterson G., van der Kamp J., Savelsbergh G., Moving advertisements systematically affect gaze behavior and performance in the soccer penalty kick, Front. Sports Act. Living, 1, (2020); Piras A., Vickers J.N., The effect of fixation transitions on quiet eye duration and performance in the soccer penalty kick: Instep versus inside kicks, Cogn. Process, 12, pp. 245-255, (2011); Scurr J., Hall B., The effects of approach angle on penalty kick accuracy and kick kinematics with recreational soccer players, Journal of Sports Science and Medicine, 8, pp. 230-234, (2009)","O.A. Fattah; School of sports science, the University of Jordan, Amman, Jordan; email: o.abdelfattah@ju.edu.jo","","Editura Universitatii din Pitesti","22478051","","","","English","J. Phys. Educ. Sport","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85178917660" "Di Paolo S.; Santillozzi F.; Zinno R.; Barone G.; Bragonzoni L.","Di Paolo, Stefano (57209464265); Santillozzi, Francesco (57930403500); Zinno, Raffaele (57214139758); Barone, Giuseppe (57208835247); Bragonzoni, Laura (7801511871)","57209464265; 57930403500; 57214139758; 57208835247; 7801511871","On-Field Biomechanical Assessment of High and Low Dive in Competitive 16-Year-Old Goalkeepers through Wearable Sensors and Principal Component Analysis","2022","Sensors","22","19","7519","","","","3","10.3390/s22197519","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85139953319&doi=10.3390%2fs22197519&partnerID=40&md5=81bd130974454e2a305aaca7822c3b27","Department for Life Quality Studies, University of Bologna, Via di Barbiano 1/10, Bologna, 40136, Italy","Di Paolo S., Department for Life Quality Studies, University of Bologna, Via di Barbiano 1/10, Bologna, 40136, Italy; Santillozzi F., Department for Life Quality Studies, University of Bologna, Via di Barbiano 1/10, Bologna, 40136, Italy; Zinno R., Department for Life Quality Studies, University of Bologna, Via di Barbiano 1/10, Bologna, 40136, Italy; Barone G., Department for Life Quality Studies, University of Bologna, Via di Barbiano 1/10, Bologna, 40136, Italy; Bragonzoni L., Department for Life Quality Studies, University of Bologna, Via di Barbiano 1/10, Bologna, 40136, Italy","Diving saves are the main duty of football goalkeepers. Few biomechanical investigations of dive techniques have been conducted, none in a sport-specific environment. The present study investigated the characteristics of goalkeepers’ dive in preferred (PS) and non-preferred (nPS) side through an innovative wearables-plus-principal-component analysis (PCA) approach. Nineteen competitive academy goalkeepers (16.5 ± 3.0 years) performed a series of high and low dives on their PS and nPS. Dives were performed in a regular football goal on the pitch. Full-body kinematics were collected through 17 wearable inertial sensors (MTw Awinda, Xsens). PCA was conducted to reduce data dimensionality (input matrix 310,878 datapoints). PCA scores were extracted for each kinematic variable and compared between PS and nPS if their explained variability was >5%. In high dive, participants exhibited greater hip internal rotation and less trunk lateral tilt (p < 0.047, ES > 0.39) in PS than nPS. In low dives, players exhibited greater ipsilateral hip abduction dominance and lower trunk rotation (p < 0.037, ES > 0.40) in PS than nPS. When diving on their nPS, goalkeepers adopted sub-optimal patterns with less trunk coordination and limited explosiveness. An ecological testing through wearables and PCA might help coaches to inspect relevant diving characteristics and improve training effectiveness. © 2022 by the authors.","dive biomechanics; ecological dynamics; football; goalkeeper; principal component analysis; wearable sensors","Adolescent; Biomechanical Phenomena; Diving; Humans; Principal Component Analysis; Soccer; Wearable Electronic Devices; Biomechanics; Ecology; Kinematics; Sports; Wearable sensors; Analysis approach; Biomechanical assessment; Body kinematics; Dive biomechanic; Ecological dynamics; Full body; Goalkeeper; Inertial sensor; Principal-component analysis; Sensor components; adolescent; biomechanics; diving; electronic device; human; principal component analysis; soccer; Principal component analysis","Sorensen H., Thomassen M., Zacho M., Biomechanical Profile of Danish Elite and Sub-Elite Soccer Goalkeepers, Footb. Sci, 5, pp. 37-44, (2008); Spratford W., Mellifont R., Burkett B., The Influence of Dive Direction on the Movement Characteristics for Elite Football Goalkeepers, Sports Biomech, 8, pp. 235-244, (2009); Ibrahim R., Kingma I., de Boode V., Faber G.S., van Dieen J.H., Angular Velocity, Moment, and Power Analysis of the Ankle, Knee, and Hip Joints in the Goalkeeper’s Diving Save in Football, Front. Sports Act. Living, 2, (2020); Otte F.W., Millar S.-K., Klatt S., How Does the Modern Football Goalkeeper Train?—An Exploration of Expert Goalkeeper Coaches’ Skill Training Approaches, J. Sports Sci, 38, pp. 1465-1473, (2020); Ibrahim R., Kingma I., de Boode V.A., Faber G.S., van Dieen J.H., Kinematic and Kinetic Analysis of the Goalkeeper’s Diving Save in Football, J. Sports Sci, 37, pp. 313-321, (2019); Zheng R., de Reus C., van der Kamp J., Goalkeeping in the Soccer Penalty Kick: The Dive Is Coordinated to the Kicker’s Non-Kicking Leg Placement, Irrespective of Time Constraints, Hum. Mov. Sci, 76, (2021); Matsukura K., Asai T., Sakamoto K., Characteristics of Movement and Force Exerted by Soccer Goalkeepers During Diving Motion, Procedia Eng, 72, pp. 44-49, (2014); Ibrahim R., Kingma I., de Boode V., Faber G.S., van Dieen J.H., The Effect of Preparatory Posture on Goalkeeper’s Diving Save Performance in Football, Front. Sports Act. Living, 1, (2019); Chau T., A Review of Analytical Techniques for Gait Data. Part 1: Fuzzy, Statistical and Fractal Methods, Gait Posture, 13, pp. 49-66, (2001); Deluzio K.J., Astephen J.L., Biomechanical Features of Gait Waveform Data Associated with Knee Osteoarthritis: An Application of Principal Component Analysis, Gait Posture, 25, pp. 86-93, (2007); Federolf P.A., Boyer K.A., Andriacchi T.P., Application of Principal Component Analysis in Clinical Gait Research: Identification of Systematic Differences between Healthy and Medial Knee-Osteoarthritic Gait, J. Biomech, 46, pp. 2173-2178, (2013); Kobayashi Y., Hobara H., Heldoorn T.A., Kouchi M., Mochimaru M., Age-Independent and Age-Dependent Sex Differences in Gait Pattern Determined by Principal Component Analysis, Gait Posture, 46, pp. 11-17, (2016); Bastiaansen B.J.C., Vegter R.J.K., Wilmes E., de Ruiter C.J., Lemmink K.A.P.M., Brink M.S., Biomechanical Load Quantification Using a Lower Extremity Inertial Sensor Setup During Football Specific Activities, Sports Biomech, pp. 1-16, (2022); Di Paolo S., Nijmeijer E., Bragonzoni L., Dingshoff E., Gokeler A., Benjaminse A., Comparing Lab and Field Agility Kinematics in Young Talented Female Football Players: Implications for ACL Injury Prevention, Eur. J. Sport Sci, pp. 1-10, (2022); Di Paolo S., Zaffagnini S., Pizza N., Grassi A., Bragonzoni L., Poor Motor Coordination Elicits Altered Lower Limb Biomechanics in Young Football (Soccer) Players: Implications for Injury Prevention through Wearable Sensors, Sensors, 21, (2021); Wilmes E., de Ruiter C.J., Bastiaansen B.J.C., van Zon J.F.J.A., Vegter R.J.K., Brink M.S., Goedhart E.A., Lemmink K.A.P.M., Savelsbergh G.J.P., Inertial Sensor-Based Motion Tracking in Football with Movement Intensity Quantification, Sensors, 20, (2020); Di Paolo S., Lopomo N.F., Della Villa F., Paolini G., Figari G., Bragonzoni L., Grassi A., Zaffagnini S., Rehabilitation and Return to Sport Assessment after Anterior Cruciate Ligament Injury: Quantifying Joint Kinematics during Complex High-Speed Tasks through Wearable Sensors, Sensors, 21, (2021); van der Kruk E., Reijne M.M., Accuracy of Human Motion Capture Systems for Sport Applications; State-of-the-Art Review, Eur. J. Sport Sci, 18, pp. 806-819, (2018); Quan W., Zhou H., Xu D., Li S., Baker J.S., Gu Y., Competitive and Recreational Running Kinematics Examined Using Principal Components Analysis, Healthcare, 9, (2021); Chiu L.Z.F., Bryanton M.A., Moolyk A.N., Proximal-to-Distal Sequencing in Vertical Jumping with and without Arm Swing, J. Strength Cond. Res, 28, pp. 1195-1202, (2014); Suzuki S., Togari H., Isokawa M., Ohashi J., Ohgushi T., Analysis of the Goalkeeper’s Diving Motion, Science and Football (Routledge Revivals), pp. 468-475, (1988); Ibrahim R., de Boode V., Kingma I., van Dieen J.H., Data-Driven Strength and Conditioning, and Technical Training Programs for Goalkeeper’s Diving Save in Football, Sports Biomech, pp. 1-13, (2022); Pratt K.A., Sigward S.M., Inertial Sensor Angular Velocities Reflect Dynamic Knee Loading during Single Limb Loading in Individuals Following Anterior Cruciate Ligament Reconstruction, Sensors, 18, (2018); Dicesare C.A., Minai A.A., Riley M.A., Ford K.R., Hewett T.E., Myer G.D., Distinct Coordination Strategies Associated with the Drop Vertical Jump Task, Med. Sci. Sports Exerc, 52, pp. 1088-1098, (2020)","R. Zinno; Department for Life Quality Studies, University of Bologna, Bologna, Via di Barbiano 1/10, 40136, Italy; email: raffaele.zinno2@unibo.it","","MDPI","14248220","","","36236618","English","Sensors","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85139953319" "Pereira Santiago P.R.; Palucci Vieira L.H.; Barbieri F.A.; Moura F.A.; Exel Santana J.; de Andrade V.L.; de Souza Bedo B.L.; Cunha S.A.","Pereira Santiago, Paulo Roberto (36098423400); Palucci Vieira, Luiz Henrique (56789595600); Barbieri, Fabio Augusto (35798078800); Moura, Felipe Arruda (16417087000); Exel Santana, Juliana (57202136827); de Andrade, Vitor Luiz (55675892700); de Souza Bedo, Bruno Luiz (56790057800); Cunha, Sergio Augusto (16416879600)","36098423400; 56789595600; 35798078800; 16417087000; 57202136827; 55675892700; 56790057800; 16416879600","Comparison of the kinematic patterns of kick between Brazilian and Japanese young soccer players","2016","Asian Journal of Sports Medicine","7","2","e33645","","","10","4","10.5812/asjsm.33645","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978737088&doi=10.5812%2fasjsm.33645&partnerID=40&md5=67791880afb31f848ec4a6b113a55d3d","Laboratory of Biomechanics and Motor Control, School of Physical Education and Sport of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil; Faculty of Medicine at Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil; Laboratory of Information, Vision and Action, Sao Paulo State University, Bauru, SP, Brazil; Laboratory of Applied Biomechanics, State University of Londrina, Brazil; Laboratory of Instrumentation for Biomechanics, State University of Campinas, SP, Brazil","Pereira Santiago P.R., Laboratory of Biomechanics and Motor Control, School of Physical Education and Sport of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil, Faculty of Medicine at Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil; Palucci Vieira L.H., Laboratory of Biomechanics and Motor Control, School of Physical Education and Sport of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil, Faculty of Medicine at Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil; Barbieri F.A., Laboratory of Information, Vision and Action, Sao Paulo State University, Bauru, SP, Brazil; Moura F.A., Laboratory of Applied Biomechanics, State University of Londrina, Brazil; Exel Santana J., Laboratory of Instrumentation for Biomechanics, State University of Campinas, SP, Brazil; de Andrade V.L., Laboratory of Biomechanics and Motor Control, School of Physical Education and Sport of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil, Faculty of Medicine at Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil; de Souza Bedo B.L., Laboratory of Biomechanics and Motor Control, School of Physical Education and Sport of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil, Faculty of Medicine at Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil; Cunha S.A., Laboratory of Instrumentation for Biomechanics, State University of Campinas, SP, Brazil","Background: Kicking performance is the most studied technical action in soccer and lower limbs kinematics is closely related to success in kicking, mainly because they are essential in imparting high velocity to the ball. Previous studies demonstrated that soccer leagues in different countries exhibit different physical demands and technical requirements during the matches. However, evidencewhether nationality has any influence in the kinematics of soccer-related skills has not yet been reported. The nationality of the players is an aspect that might be also relevant to the performance in kicking. Objectives: The aim of this study was to compare the lower limbs kinematic patterns during kicking, between Brazilian and Japanese young top soccer players. Patients and Methods: Seven Brazilian (GA) and seven Japanese (GB) U-17 players performed 15 side-foot kicks each, with a distance of 20 m away from the goal, aiming a target of 1 × 1 m in upper corner, constrained by a defensive wall (1.8 × 2 m). Four digital video cameras (120 Hz) recorded the performance for further 3D reconstruction of thigh, shank and foot segments of both kicking and support limbs. The selected kicking cycle was characterized by the toe-off of the kicking limb to the end of the kicking foot when it came in contact with the ball. Stereographical projection of each segment was applied to obtain the representative curves of kicking as function of time for each participant in each trial. Cluster analysis was performed to identify the mean GA and GB curves for each segment. Silhouette coefficient (SC) was calculated, in order to determine the degree of separation between the two groups’ curves. Results: Comparison between the median confidence intervals of the SC showed no differences between groups as regards lower limb patterns of movements. Task accuracy was determined by the relative frequency that the ball reached the target for all attempts and no differences were found (GA: 10.48 ± 14.33%; GB: 9.52 ± 6.51%; P = 0.88). Conclusions: We conclude that lower limb kinematic patterns, in support and ball contact phases, are similar in young Brazilian and Japanese soccer players during free kicks when adopting the side-foot kick style. © 2016, Sports Medicine Research Center.","Biomechanics; Cluster analysis; Kicking; Nationality; Soccer","biomechanics; cluster analysis; confidence interval; human; Japanese (citizen); soccer player; thigh; toe; videorecording","Lees A., Asai T., Ersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, J Sports Sci, 28, 8, pp. 805-817, (2010); Lopes J.E., Araujo D., Davids K., Investigative trends in understanding penalty-kick performance in association football: An ecological dynamics perspective, Sports Med, 44, 1, pp. 1-7, (2014); Moura F.A., Martins L.E., Cunha S.A., Analysis of football game-related statistics using multivariate techniques, J Sports Sci, 32, 20, (2014); Dorge H.C., Erson T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, J Sports Sci, 20, 4, pp. 293-299, (2002); Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, J Sports Sci Med, 1, 3, pp. 72-79, (2002); Katis A., Amiridis I., Kellis E., Lees A., Recovery of powerful kick biomechanics after intense running fatigue in male and female soccer players, Asian J Sports Med, 5, 4, (2014); Sterzing T., Hennig E.M., The influence of soccer shoes on kicking velocity in full-instep kicks, Exerc Sport Sci Rev, 36, 2, pp. 91-97, (2008); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med Sci Sports Exerc, 30, 6, pp. 917-927, (1998); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med Sci Sports Exerc, 34, 12, pp. 2028-2036, (2002); Kawamoto R., Miyagi O., Ohashi J., Fukashiro S., Kinetic comparison of a side-foot soccer kick between experienced and inexperienced players, Sports Biomech, 6, 2, pp. 187-198, (2007); Luhtanen P., Kinematics and kinetics of maximal instep kicking in junior soccer players, Science and Football, pp. 441-448, (1988); Brown E.W., Wilson D.J., Mason B., Baker J., Three Dimensional Kinematics of the Direct Free Kick in Soccer When Opposed by a Defensive Wall, (1991); Dessing J.C., Craig C.M., Bending It Like Beckham: How to Visually Fool the Goalkeeper, Plos ONE, 5, 10, (2010); Acar M., Yapicioglu B., Arikan N., Yalcin S., Ates N., Ergun M., Analysis of goals scored in the 2006 World Cup, Science and Football VI, pp. 235-242, (2009); (2013); Santiago P., Moura F.A., Barbieri F.A., Lima Junior R.S., Cunha S.A., Relationship between kinematic pattern of movement and free kick performance in soccer, Braz J Biomech, 8, 15, pp. 54-60, (2008); Alcock A., Analysis of direct free kicks in the women’s football World Cup 2007, Eur J Sport Sci, 10, 4, pp. 279-284, (2010); Craig C.M., Bastin J., Montagne G., How information guides movement: Intercepting curved free kicks in soccer, Hum Mov Sci, 30, 5, (2011); De Witt J.K., Hinrichs R.N., Mechanical factors associated with the development of high ball velocity during an instep soccer kick, Sports Biomech, 11, 3, pp. 382-390, (2012); Sinclair J., Fewtrell D., Taylor P.J., Bottoms L., Atkins S., Hobbs S.J., Three-dimensional kinematic correlates of ball velocity during maximal instep soccer kicking in males, Eur J Sport Sci, 14, 8, pp. 799-805, (2014); Lees A.H., Kershaw L., Moura F., The three-dimensional nature of the maximal instep kick in soccer, Science and Football V, pp. 65-70, (2005); Kapidzic A., Huremovic T., Biberovic A., Kinematic analysis of the instep kick in youth soccer players, J Hum Kinet, 42, pp. 81-90, (2014); Dellal A., Chamari K., Wong D.P., Ahmaidi S., Keller D., Barros R., Et al., Comparison of physical and technical performance in European soccer match-play: FA Premier League and La Liga, Eur J Sport Sci, 11, 1, (2011); Hong S., Chung C., Sakamoto K., Asai T., Analysis of the swing motion on knuckling shot in soccer, Procedia Engin, 13, pp. 176-181, (2011); Barbieri F.A., Gobbi L.T., Santiago P.R., Cunha S.A., Dominant-non-dominant asymmetry of kicking a stationary and rolling ball in a futsal context, J Sports Sci, 33, 13, pp. 1411-1419, (2015); 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Wong P.L., Chamari K., Dellal A., Wisloff U., Relationship between anthropometric and physiological characteristics in youth soccer players, J Strength Cond Res, 23, 4, pp. 1204-1210, (2009); Williams A.M., Reilly T., Talent identification and development in soccer, J Sports Sci, 18, 9, pp. 657-667, (2000)","P.R. Pereira Santiago; Laboratory of Biomechanics and Motor Control, School of Physical Education and Sport of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Brazil; email: paulosantiago@usp.br","","Kowsar Medical Institute","2008000X","","","","English","Asian J. Sports Med.","Article","Final","All Open Access; Green Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-84978737088" "Wang D.; Chiaia T.; Cavanaugh J.T.; Rodeo S.A.","Wang, Dean (56123393800); Chiaia, Theresa (8062647900); Cavanaugh, John T. (7103381872); Rodeo, Scott A. (7004406525)","56123393800; 8062647900; 7103381872; 7004406525","Team Approach: Return to Play After Anterior Cruciate Ligament Reconstruction","2019","JBJS Reviews","7","1","","E1","","","4","10.2106/JBJS.RVW.18.00003","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85060934601&doi=10.2106%2fJBJS.RVW.18.00003&partnerID=40&md5=481fa6d18f18768f8f23bdba5742bdf0","Sports Medicine and Shoulder Service, Hospital for Special Surgery, New York, NY, United States; Sports Rehabilitation and Performance Center, Hospital for Special Surgery, New York, NY, United States","Wang D., Sports Medicine and Shoulder Service, Hospital for Special Surgery, New York, NY, United States; Chiaia T., Sports Rehabilitation and Performance Center, Hospital for Special Surgery, New York, NY, United States; Cavanaugh J.T., Sports Rehabilitation and Performance Center, Hospital for Special Surgery, New York, NY, United States; Rodeo S.A., Sports Medicine and Shoulder Service, Hospital for Special Surgery, New York, NY, United States","» Current surgical and rehabilitation techniques have allowed for a relatively high rate of return to sports after anterior cruciate ligament (ACL) reconstruction. Although some patients may be expected to return to sporting activities by as early as 8 months after the surgical procedure, most patients will have not achieved the appropriate rehabilitation benchmarks by this time point and can require as long as 2 years to reach their full preoperative level. » In addition to the diagnosis and surgical treatment of the ACL injury, the surgeon has to educate the patient about the injury, treatment, and rehabilitation process. » The physical therapist commonly spends the most time with the patient and therefore must foster a relationship of trust early on with the patient-athlete. Through biomechanical evaluations, factors that contributed to the ACL injury and ongoing deficits during the rehabilitation process are identified and are addressed. » Assessment of movement quality complements the traditional quantitative measures of performance and informs the medical and rehabilitation team, as well as the patient, of the presence of potentially faulty movement patterns associated with an ACL injury. » Throughout the course of rehabilitation, the certified athletic trainer works closely with the physical therapist to ensure athlete compliance with the prescribed exercises. Communication between the physical therapist and the certified athletic trainer therefore plays an integral role in the patient's rehabilitation. During the return-to-play phase of rehabilitation, the certified athletic trainer serves as the liaison between the patient, surgeon, physical therapist, and coaching staff. » This team approach to managing the athlete's injury, rehabilitation, and expectations is key to a successful outcome. Copyright © 2018 By the Journal of Bone and joint Surgery, Incorporated.","","Adolescent; Anterior Cruciate Ligament Injuries; Female; Humans; Patient Care Team; Return to Sport; adolescent; anterior cruciate ligament reconstruction; Article; athlete; biomechanics; bone graft; case report; clinical article; female; femoral condyle; gait; human; interpersonal communication; isokinetic exercise; knee extension angle; knee flexion angle; lateral meniscus; meniscal repair; nuclear magnetic resonance imaging; patient compliance; physical examination; physiotherapist; physiotherapy; postoperative complication; quadriceps femoris muscle; return to sport; soccer; squatting (exercise); anterior cruciate ligament injury; patient care","Mohtadi NG, Chan DS., Return to sportspecific performance after primary anterior cruciate ligament reconstruction: a systematic review, Am J Sports Med, (2017); Ardern CL, Webster KE, Taylor NF, Feller JA., Return to the preinjury level of competitive sport after anterior cruciate ligament reconstruction surgery: two-thirds of patients have not returned by 12 months after surgery, Am J Sports Med, 39, 3, pp. 538-543, (2011); Ardern CL, Taylor NF, Feller JA, Whitehead TS, Webster KE., Sports participation 2 years after anterior cruciate ligament reconstruction in athleteswhohad not returned to sport at 1 year: a prospective follow-up of physical function and psychological factors in 122 athletes, Am J Sports Med, 43, 4, pp. 848-856, (2015); Nwachukwu BU, Chang B, Voleti PB, Berkanish P, Cohn MR, Altchek DW, Allen AA, Williams RJ., Preoperative Short Form Health Survey score is predictive of return to play and minimal clinically important difference at aminimum 2-year follow-up after anterior cruciate ligament reconstruction, Am J Sports Med, 45, 12, pp. 2784-2790, (2017); Shelbourne KD, Foulk DA., Timing of surgery in acute anterior cruciate ligament tears on the return of quadriceps muscle strength after reconstruction using an autogenous patellar tendon graft, Am J Sports Med, 23, 6, pp. 686-689, (1995); Almekinders LC, Moore T, Freedman D, Taft TN., Post-operative problems following anterior cruciate ligament reconstruction, Knee Surg Sports Traumatol Arthrosc, 3, 2, pp. 78-82, (1995); McHugh MP, Tyler TF, Gleim GW, Nicholas SJ., Preoperative indicators of motion loss and weakness following anterior cruciate ligament reconstruction, JOrthop Sports Phys Ther, 27, 6, pp. 407-411, (1998); Mayr HO, Weig TG, Plitz W., Arthrofibrosis following ACL reconstruction-reasons and outcome, Arch Orthop Trauma Surg, 124, 8, pp. 518-522, (2004); Beynnon BD, Johnson RJ, Naud S, Fleming BC, Abate JA, Brattbakk B, Nichols CE., Accelerated versus nonaccelerated rehabilitation after anterior cruciate ligament reconstruction: a prospective, randomized, double-blind investigation evaluating knee joint laxity using Roentgen stereophotogrammetric analysis, Am J Sports Med, 39, 12, pp. 2536-2548, (2011); Wilk KE, Arrigo CA., Rehabilitation principles of the anterior cruciate ligament reconstructed knee: twelve steps for successful progression and return to play, Clin Sports Med, 36, 1, pp. 189-232, (2017); Beynnon BD, Uh BS, Johnson RJ, Abate JA, Nichols CE, Fleming BC, Poole AR, Roos H., Rehabilitation after anterior cruciate ligament reconstruction: a prospective, randomized, double-blind comparison of programs administered over 2 different time intervals, Am J Sports Med, 33, 3, pp. 347-359, (2005); Shelbourne KD, Nitz P., Accelerated rehabilitation after anterior cruciate ligament reconstruction, Am J Sports Med, 18, 3, pp. 292-299, (1990); Camp CL, Lebaschi A, Cong GT, Album Z, Carballo C, Deng XH, Rodeo SA., Timing of postoperative mechanical loading affects healing following anterior cruciate ligament reconstruction: analysis in a murine model, J Bone Joint Surg Am, 99, 16, pp. 1382-1391, (2017); Deandrade JR, Grant C, Dixon AS., Joint distension and reflex muscle inhibition in the knee, J Bone Joint Surg Am, 47, pp. 313-322, (1965); Shakespeare DT, Stokes M, Sherman KP, Young A., Reflex inhibition of the quadriceps after meniscectomy: lack of association with pain, Clin Physiol, 5, 2, pp. 137-144, (1985); Griffin LY, Albohm MJ, Arendt EA, Bahr R, Beynnon BD, Demaio M, Dick RW, Engebretsen L, Garrett WE, Hannafin JA, Hewett TE, Huston LJ, Ireland ML, Johnson RJ, Lephart S, Mandelbaum BR, Mann BJ, Marks PH, Marshall SW, Myklebust G, Noyes FR, Powers C, Shields C, Shultz SJ, Silvers H, Slauterbeck J, Taylor DC, Teitz CC, Wojtys EM, Yu B., Understanding and preventing noncontact anterior cruciate ligament injuries: a review of the Hunt Valley II meeting, January 2005, Am J Sports Med, 34, 9, pp. 1512-1532, (2006); Graziano J, Chiaia T, de Mille P, Nawabi DH, Green DW, Cordasco FA., Return to sport for skeletally immature athletes after ACL reconstruction: preventing a second injury using a quality ofmovement assessment and quantitativemeasures to addressmodifiable risk factors, Orthop J Sports Med, 5, 4, (2017); Di Stasi S, Myer GD, Hewett TE., Neuromuscular training to target deficits associated with second anterior cruciate ligament injury, J Orthop Sports Phys Ther, 43, 11, pp. 777-792, (2013); Escamilla RF, Macleod TD, Wilk KE, Paulos L, Andrews JR., Anterior cruciate ligament strain and tensile forces for weight-bearing and non-weight-bearing exercises: a guide to exercise selection, J Orthop Sports Phys Ther, 42, 3, pp. 208-220, (2012)","S.A. Rodeo; Sports Medicine and Shoulder Service, Hospital for Special Surgery, New York, United States; email: rodeos@hss.edu","","Journal of Bone and Joint Surgery Inc.","23299185","","","30601201","English","JBJS Rev.","Article","Final","","Scopus","2-s2.0-85060934601" "de Assis M.A.; Santos T.R.T.; Fonseca S.T.; de Andrade A.G.P.; Araújo P.A.; de Souza T.R.; Resende R.A.; Ocarino J.M.","de Assis, Miguel Arcanjo (58516079100); Santos, Thiago Ribeiro Teles (56206795000); Fonseca, Sergio Teixeira (7005476583); de Andrade, André Gustavo Pereira (58033576000); Araújo, Priscila Albuquerque (57471318500); de Souza, Thales Rezende (57220134402); Resende, Renan Alves (53264832000); Ocarino, Juliana Melo (23480457400)","58516079100; 56206795000; 7005476583; 58033576000; 57471318500; 57220134402; 53264832000; 23480457400","Effects of Resistance Training of Upper Limb and Trunk Muscles on Soccer Instep Kick Kinematics","2023","Journal of Applied Biomechanics","39","4","","254","263","9","1","10.1123/jab.2022-0323","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85166389173&doi=10.1123%2fjab.2022-0323&partnerID=40&md5=58eb8993ca9facb64522a73e0f989c58","Graduate Program in Rehabilitation Sciences, Physical Therapy Department, School of Physical Education Physical Therapy and Occupational Therapy, Universidade Federal de Minas Gerais, MG, Belo Horizonte, Brazil; Faculty of Physical Education and Physical Therapy, Universidade Federal de Uberlândia, MG, Uberlândia, Brazil; Graduate Program in Sports Sciences, School of Physical Education Physical Therapy and Occupational Therapy, Universidade Federal de Minas Gerais, MG, Belo Horizonte, Brazil","de Assis M.A., Graduate Program in Rehabilitation Sciences, Physical Therapy Department, School of Physical Education Physical Therapy and Occupational Therapy, Universidade Federal de Minas Gerais, MG, Belo Horizonte, Brazil; Santos T.R.T., Faculty of Physical Education and Physical Therapy, Universidade Federal de Uberlândia, MG, Uberlândia, Brazil; Fonseca S.T., Graduate Program in Rehabilitation Sciences, Physical Therapy Department, School of Physical Education Physical Therapy and Occupational Therapy, Universidade Federal de Minas Gerais, MG, Belo Horizonte, Brazil; de Andrade A.G.P., Graduate Program in Sports Sciences, School of Physical Education Physical Therapy and Occupational Therapy, Universidade Federal de Minas Gerais, MG, Belo Horizonte, Brazil; Araújo P.A., Graduate Program in Rehabilitation Sciences, Physical Therapy Department, School of Physical Education Physical Therapy and Occupational Therapy, Universidade Federal de Minas Gerais, MG, Belo Horizonte, Brazil; de Souza T.R., Graduate Program in Rehabilitation Sciences, Physical Therapy Department, School of Physical Education Physical Therapy and Occupational Therapy, Universidade Federal de Minas Gerais, MG, Belo Horizonte, Brazil; Resende R.A., Graduate Program in Rehabilitation Sciences, Physical Therapy Department, School of Physical Education Physical Therapy and Occupational Therapy, Universidade Federal de Minas Gerais, MG, Belo Horizonte, Brazil; Ocarino J.M., Graduate Program in Rehabilitation Sciences, Physical Therapy Department, School of Physical Education Physical Therapy and Occupational Therapy, Universidade Federal de Minas Gerais, MG, Belo Horizonte, Brazil","The upper body and trunk muscles are crucial to perform soccer kicks. Resistance training targeting these muscles may modify the pattern adopted during kicking. This study aimed to investigate the effect of resistance training of the arm and anterior trunk muscles on instep kicking kinematics. Twenty-six male participants were randomly allocated into a training group or control group. The training group underwent resistance training of arm and trunk muscles and practiced the instep kick for 8 weeks. The control group only practiced kicking during the same period. The trunk, hip, and knee kinematics were assessed during the instep kick before and after the intervention. Kinematics were analyzed according to their data distribution with statistical parametric or nonparametric mapping. The effect of the training on the 1-repetition maximum test was analyzed using a repeated-measures multivariate analysis of variance. The training group showed greater hip extension after the training during the backswing phase (Hedge g effect size of 0.316-0.321) and increased 1-repetitionmaximum for all exercises. Therewere no other differences. The present study documented the nonlocal effect of strengthening training in which arm and trunk muscle training resulted in changes in hip kinematics during the backswing phase of the instep kick. © 2023 Human Kinetics, Inc.","athlete; kicking; sports; strengthening","Biomechanical Phenomena; Humans; Male; Muscle, Skeletal; Resistance Training; Soccer; Upper Extremity; Kinematics; Mapping; Multivariant analysis; Muscle; Physiological models; Athlete; Control groups; Hip and knees; Kicking; Knee kinematics; Strengthening; Trunk kinematics; Trunk muscle; Upper bodies; Upper limbs; adult; article; athlete; clinical article; controlled study; effect size; exercise; hip; human; human experiment; kinematics; knee; male; multivariate analysis of variance; muscle training; randomized controlled trial; resistance training; soccer; trunk; upper limb; biomechanics; physiology; skeletal muscle; upper limb; Sports","FIFA Big Count 2006, (2007); Nunome H, Asai T, Ikegami Y, Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med Sci Sports Exerc, 34, 12, pp. 2028-2036, (2002); 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Stecco C, Hammer W, Vleeming A, De Caro R., Fasciae of the thorax and abdomen, Functional Atlas of the Human Fascial System, pp. 141-184, (2015)","J.M. Ocarino; Graduate Program in Rehabilitation Sciences, Physical Therapy Department, School of Physical Education Physical Therapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; email: jocarino@ufmg.br","","Human Kinetics Publishers Inc.","10658483","","JABOE","37487581","English","J. Appl. Biomech.","Article","Final","","Scopus","2-s2.0-85166389173" "Iitake T.; Hioki M.; Takahashi H.; Nunome H.","Iitake, Tsuyoshi (57950721300); Hioki, Maya (24553920200); Takahashi, Hitoshi (57950224900); Nunome, Hiroyuki (6507093692)","57950721300; 24553920200; 57950224900; 6507093692","Sex difference in soccer instep kicking","2022","Journal of Sports Sciences","40","20","","2217","2224","7","1","10.1080/02640414.2022.2139881","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85150239354&doi=10.1080%2f02640414.2022.2139881&partnerID=40&md5=01a526e2462d05d14f8d93d6cc5d4c7b","Graduate School of Sports and Health Science, Fukuoka University, Fukuoka, Japan; Faculty of Health Care and Medical Sports, Department of Rehabilitation, Teikyo Heisei University, Ichihara, Japan; Department of Medical Sports Faculty of Health Care, Medical Sports Teikyo Heisei University, Chiba, Ichihara, Japan; Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan","Iitake T., Graduate School of Sports and Health Science, Fukuoka University, Fukuoka, Japan; Hioki M., Faculty of Health Care and Medical Sports, Department of Rehabilitation, Teikyo Heisei University, Ichihara, Japan; Takahashi H., Department of Medical Sports Faculty of Health Care, Medical Sports Teikyo Heisei University, Chiba, Ichihara, Japan; Nunome H., Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan","We aimed to clarify the differences in soccer instep kicking dynamics between sex groups. The instep kicking of seven female (height: 160.3 ± 6.1 cm; mass: 54.3 ± 5.2 kg) and seven male (height: 173.0 ± 5.9 cm; mass: 70.0 ± 9.0 kg) players were recorded by a motion capture system (500 Hz). Joint moments of the kicking leg were computed and normalized by the body mass and height. Statistical parametric mapping was used to compare the entire kicking motion between the two groups. Significantly slower resultant ball velocity seen in female players was most likely explained by their significantly slower run-up velocity, shorter leg length and lower foot–ball velocity ratio. Female players exhibited significantly smaller knee joint moment in the latter part (80–86%) of kicking. Also, significantly smaller positive work done by knee extension moment and the ratio of work (knee extension/hip flexion) were found in female players. These results suggested that the suppressed knee extension moment action was identified as a key kinetic characteristic in the instep kicking of female players, and to compensate for this action, they more rely on the work due to hip flexion moment to execute the instep kicking. © 2022 Informa UK Limited, trading as Taylor & Francis Group.","angular velocity; female players; Kicking mechanics; muscle moment","Biomechanical Phenomena; Female; Foot; Humans; Knee; Lower Extremity; Male; Sex Characteristics; Soccer; biomechanics; female; foot; human; knee; lower limb; male; sexual characteristics; soccer","Adler R., Taylor J., Random fields and geometry, (2009); (1992); Althoff K., Kroiher J., Hennig E.M., A soccer game analysis of two world cups: Playing behavior between elite female and male soccer players, Footwear Science, 2, 1, pp. 51-56, (2010); Andrade M.D.S., De Lira C.A.B., Koffes F.D.C., Mascarin N.C., Benedito-Silva A.A., Da Silva A.C., Isokinetic hamstrings-to-quadriceps peak torque ratio: The influence of sport modality, gender, and angular velocity, Journal of Sports Sciences, 30, 6, pp. 547-553, (2012); Asami T., Nolte V., Analysis of powerful ball kicking, Biomechanics VIII-B, pp. 695-700, (1983); Augustus S., Mundy P., Smith N., Support leg action can contribute to maximal instep soccer kick performance: An intervention study, Journal of Sports Sciences, 35, 1, pp. 89-98, (2017); Barfield W.R., Effects of selected kinematic and kinetic variables on instep kicking with dominant and nondominant limbs, Journal of Human Movement Studies, 29, pp. 251-272, (1995); Barfield W., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, Journal of Sports Science and Medicine, 1, 3, pp. 72-79, (2002); Decker M.J., Torry M.R., Wyland D.J., Sterett W.I., Steadman J.R., Gender differences in lower extremity kinematics, kinetics and energy absorption during landing, Clinical Biomechanics, 18, 7, pp. 662-669, (2003); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, 4, pp. 293-299, (2002); Dorgo S., Edupuganti P., Smith D.R., Ortiz M., Comparison of lower body specific resistance training on the hamstring to quadriceps strength ratios in men and women, Research Quarterly for Exercise and Sport, (2013); Faul F., Erdfelder E., Lang A.G., Buchner A., G*Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences, Behavior Research Methods, 39, 2, pp. 175-191, (2007); Women’s Football Survey. 2014, (2014); Women’s football member associations survey report, 1–113, (2019); Hara R., McGinley J., Briggs C., Baker R., Sangeux M., Predicting the location of the hip joint centres, impact of age group and sex, Scientific Reports, 6, 1, pp. 1-9, (2016); Inoue K., Nunome H., Sterzing T., Shinkai H., Ikegami Y., Dynamics of the support leg in soccer instep kicking, Journal of Sports Sciences, 32, 11, pp. 1023-1032, (2014); Katis A., Kellis E., Lees A., Age and gender differences in kinematics of powerful instep kicks in soccer, Sports Biomechanics, 14, 3, pp. 287-299, (2015); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, 8, pp. 805-817, (2010); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, 3, pp. 211-234, (1998); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine & Science in Sports & Exercise, 30, pp. 917-927, (1998); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine & Science in Sports & Exercise, 33, 12, pp. 2028-2036, (2002); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 24, 5, pp. 529-541, (2006); Nunome H., Inoue K., Watanabe K., Iga T., Akima H., Dynamics of submaximal effort soccer instep kicking, Journal of Sports Sciences, 36, 22, pp. 2588-2595, (2018); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, Journal of Sports Sciences, 24, 1, pp. 11-22, (2006); Pataky T.C., Generalized n-dimensional biomechanical field analysis using statistical parametric mapping, Journal of Biomechanics, 43, 10, pp. 1976-1982, (2010); Ruscello B., Esposite M., Iligato G., Lunetta L., Marcelli L., Pantanella L., Gabrielli P.R., D'ottavio S., Gender differences in instep soccer kicking biomechanics, investigated through a 3D human motion tracker system, The Journal of Sports Medicine and Physical Fitness, 60, 8, pp. 1072-1080, (2020); Sakamoto K., Numazu N., Hong S., Asai T., Kinetic analysis of instep and side-foot kick in female and male soccer players, Procedia Engineering, 147, pp. 214-219, (2016); Sakamoto K., Sasaki R., Hong S., Matsukura K., Asai T., Comparison of kicking speed between female and male soccer players, Procedia Engineering, 72, pp. 50-55, (2014); Shinkai H., Nunome H., Isokawa M., Ikegami Y., Ball impact dynamics of instep soccer kicking, Medicine & Science in Sports & Exercise, 41, 4, pp. 889-897, (2009); Shinkai H., Nunome H., Suito H., Inoue K., Ikegam Y., Cross-sectional change of ball impact in instep kicks from junior to professional footballers, Science and football VII, pp. 27-32, (2013); Simoneau J.A., Bouchard C., Human variation in skeletal muscle fiber-type proportion and enzyme activities, American Journal of Physiology - Endocrinology and Metabolism, 257, 4, pp. E567-E572, (1989); Thorstensson A., Grimby G., Karlsson J., Force velocity relations and fiber composition in human knee extensor muscles, Journal of Applied Physiology, 40, 1, pp. 12-16, (1976); Biomechanics and Motor Control of Human Movement: Fourth Edition, Biomechanics and Motor Control of Human Movement: Fourth Edition, (2009)","H. Nunome; Faculty of Sports and Health Science, Fukuoka University, Fukuoka, 8-19-1 Nanakuma, Jonan-ku, 814-0180, Japan; email: nunome@fukuoka-u.ac.jp","","Routledge","02640414","","JSSCE","36919566","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-85150239354" "Calderón-Díaz M.; Silvestre Aguirre R.; Vásconez J.P.; Yáñez R.; Roby M.; Querales M.; Salas R.","Calderón-Díaz, Mailyn (57221463433); Silvestre Aguirre, Rony (57205349178); Vásconez, Juan P. (57203006271); Yáñez, Roberto (57214562238); Roby, Matías (57715331200); Querales, Marvin (24475409000); Salas, Rodrigo (8875435300)","57221463433; 57205349178; 57203006271; 57214562238; 57715331200; 24475409000; 8875435300","Explainable Machine Learning Techniques to Predict Muscle Injuries in Professional Soccer Players through Biomechanical Analysis","2024","Sensors","24","1","119","","","","0","10.3390/s24010119","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85181934488&doi=10.3390%2fs24010119&partnerID=40&md5=9c47e2870116e624bf197f20aeac80ef","Faculty of Engineering, Universidad Andres Bello, Santiago, 7550196, Chile; Ph.D. Program in Health Sciences and Engineering, Universidad de Valparaiso, Valparaiso, 2362735, Chile; Millennium Institute for Intelligent Healthcare Engineering (iHealth), Valparaiso, 2362735, Chile; Laboratorio de Biomecánica, Centro de Innovación Clínica MEDS, Santiago, 7691236, Chile; School of Medical Technology, Universidad de Valparaiso, Valparaiso, 2362735, Chile; School of Biomedical Engineering, Universidad de Valparaiso, Valparaiso, 2362735, Chile","Calderón-Díaz M., Faculty of Engineering, Universidad Andres Bello, Santiago, 7550196, Chile, Ph.D. Program in Health Sciences and Engineering, Universidad de Valparaiso, Valparaiso, 2362735, Chile, Millennium Institute for Intelligent Healthcare Engineering (iHealth), Valparaiso, 2362735, Chile; Silvestre Aguirre R., Laboratorio de Biomecánica, Centro de Innovación Clínica MEDS, Santiago, 7691236, Chile; Vásconez J.P., Faculty of Engineering, Universidad Andres Bello, Santiago, 7550196, Chile; Yáñez R., Laboratorio de Biomecánica, Centro de Innovación Clínica MEDS, Santiago, 7691236, Chile; Roby M., Laboratorio de Biomecánica, Centro de Innovación Clínica MEDS, Santiago, 7691236, Chile; Querales M., School of Medical Technology, Universidad de Valparaiso, Valparaiso, 2362735, Chile; Salas R., Ph.D. Program in Health Sciences and Engineering, Universidad de Valparaiso, Valparaiso, 2362735, Chile, Millennium Institute for Intelligent Healthcare Engineering (iHealth), Valparaiso, 2362735, Chile, School of Biomedical Engineering, Universidad de Valparaiso, Valparaiso, 2362735, Chile","There is a significant risk of injury in sports and intense competition due to the demanding physical and psychological requirements. Hamstring strain injuries (HSIs) are the most prevalent type of injury among professional soccer players and are the leading cause of missed days in the sport. These injuries stem from a combination of factors, making it challenging to pinpoint the most crucial risk factors and their interactions, let alone find effective prevention strategies. Recently, there has been growing recognition of the potential of tools provided by artificial intelligence (AI). However, current studies primarily concentrate on enhancing the performance of complex machine learning models, often overlooking their explanatory capabilities. Consequently, medical teams have difficulty interpreting these models and are hesitant to trust them fully. In light of this, there is an increasing need for advanced injury detection and prediction models that can aid doctors in diagnosing or detecting injuries earlier and with greater accuracy. Accordingly, this study aims to identify the biomarkers of muscle injuries in professional soccer players through biomechanical analysis, employing several ML algorithms such as decision tree (DT) methods, discriminant methods, logistic regression, naive Bayes, support vector machine (SVM), K-nearest neighbor (KNN), ensemble methods, boosted and bagged trees, artificial neural networks (ANNs), and XGBoost. In particular, XGBoost is also used to obtain the most important features. The findings highlight that the variables that most effectively differentiate the groups and could serve as reliable predictors for injury prevention are the maximum muscle strength of the hamstrings and the stiffness of the same muscle. With regard to the 35 techniques employed, a precision of up to 78% was achieved with XGBoost, indicating that by considering scientific evidence, suggestions based on various data sources, and expert opinions, it is possible to attain good precision, thus enhancing the reliability of the results for doctors and trainers. Furthermore, the obtained results strongly align with the existing literature, although further specific studies about this sport are necessary to draw a definitive conclusion. © 2023 by the authors.","hamstring injuries; machine learning explainability; soccer player; sport medicine; XGBoost","Artificial Intelligence; Bayes Theorem; Humans; Machine Learning; Muscles; Reproducibility of Results; Soccer; Biomechanics; Decision trees; Diagnosis; Learning systems; Logistic regression; Muscle; Nearest neighbor search; Neural networks; Professional aspects; Support vector machines; biological marker; Biomechanical analysis; Hamstring injury; Machine learning explainability; Machine learning techniques; Machine-learning; Muscle injuries; Risk factors; Soccer player; Strain injuries; Xgboost; accident prevention; algorithm; article; artificial intelligence; artificial neural network; Bayesian learning; decision tree; diagnosis; hamstring muscle; human; k nearest neighbor; logistic regression analysis; machine learning; muscle injury; muscle strength; prediction; prevention; reliability; rigidity; risk factor; soccer player; sports medicine; support vector machine; Sports","Baroni B.M., Ruas C.V., Ribeiro-Alvares J.B., Pinto R.S., Hamstring-to-quadriceps torque ratios of professional male soccer players: A systematic review, J. 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Appl, 130, pp. 157-171, (2019); Das D., Ito J., Kadowaki T., Tsuda K., An interpretable machine learning model for diagnosis of Alzheimer’s disease, PeerJ, 7, (2019); Khan I.U., Aslam N., AlShedayed R., AlFrayan D., AlEssa R., AlShuail N.A., Al Safwan A., A proactive attack detection for heating, ventilation, and air conditioning (HVAC) system using explainable extreme gradient boosting model (XGBoost), Sensors, 22, (2022); Calderon-Diaz M., Serey-Castillo L.J., Vallejos-Cuevas E.A., Espinoza A., Salas R., Macias-Jimenez M.A., Detection of variables for the diagnosis of overweight and obesity in young Chileans using machine learning techniques, Procedia Comput. Sci, 220, pp. 978-983, (2023)","M. Calderón-Díaz; Faculty of Engineering, Universidad Andres Bello, Santiago, 7550196, Chile; email: mailyn.calderon@unab.cl; R. Salas; Ph.D. Program in Health Sciences and Engineering, Universidad de Valparaiso, Valparaiso, 2362735, Chile; email: rodrigo.salas@uv.cl","","Multidisciplinary Digital Publishing Institute (MDPI)","14248220","","","38202981","English","Sensors","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85181934488" "Sun W.; Chan E.C.H.; Fong D.T.P.","Sun, Wei (56085436300); Chan, Edwin C. H. (57221234286); Fong, Daniel T. P. (8274063100)","56085436300; 57221234286; 8274063100","Delayed peroneal muscle reaction time in male amateur footballers during a simulated prolonged football protocol","2021","Research in Sports Medicine","29","4","","364","372","8","1","10.1080/15438627.2020.1868467","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85098548127&doi=10.1080%2f15438627.2020.1868467&partnerID=40&md5=968987d2b96b8e1d6c75e718919a822b","College of Sports and Health, Shandong Sport University, Jinan, Shandong, China; National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom","Sun W., College of Sports and Health, Shandong Sport University, Jinan, Shandong, China; Chan E.C.H., National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom; Fong D.T.P., National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom","Peroneal muscle fatigue could result in ankle inversion sprain injuries. This study investigated the peroneal muscle reaction time during a simulated prolonged football protocol. Nine male footballers completed a 105-minute simulated prolonged football protocol. The peroneal muscle reaction time to an ankle inversion perturbation was measured every 15 minutes by a surface electromyography system sampling at 1000 Hz. One-way repeated ANOVA with post-hoc paired t-test showed a steady upward trend starting from 48.9 ms at baseline to 57.1 ms at the end of the first half, followed by a recovery back to 50.9 ms at the start of the second half and a further delay in the last 30 minutes to 60.2 ms at the end of the protocol. Delayed peroneal muscle reaction was found after 30 minutes of the first half and 15 minutes of the second half of a football match. The risk of ankle sprain could increase in the latter minutes in each half protocol. Thus, prevention injury training strategies should focus on these specific durations in football matches. © 2020 Informa UK Limited, trading as Taylor & Francis Group.","ankle injuries; Ankle sprain; biomechanics; ligamentous injuries; neuromuscular control; soccer; sports medicine; syndesmotic injuries","Ankle Injuries; Ankle Joint; Electromyography; Humans; Male; Muscle Fatigue; Muscle, Skeletal; Reaction Time; Soccer; Young Adult; ankle; ankle injury; electromyography; human; male; muscle fatigue; physiology; reaction time; skeletal muscle; soccer; young adult","Almonroeder T.G., Tighe S.M., Miller T.M., Lanning C.R., The influence of fatigue on decision-making in athletes: A systematic review, Sports Biomechanics, 19, 1, pp. 76-89, (2020); Beynnon B.D., Murphy D.F., Alosa D.M., Predictive factors for lateral ankle sprains: A literature review, Journal of Athletic Training, 37, 4, pp. 376-380, (2002); Cohen J., Statistical power analysis for the behavioral sciences, (2013); De Noronha M., Lay E.K., McPhee M.R., Mnatzaganian G., Nunes G.S., Ankle sprain has higher occurrence during the latter parts of matches: Systematic review with meta-analysis, Journal of Sport Rehabilitation, 28, 4, pp. 373-380, (2019); Delvaux F., Schwartz C., Rodriguez C., Forthomme B., Kaux J.F., Croisier J.L., Preseason assessment of anaerobic performance in elite soccer players: Comparison of isokinetic and functional test, Sports Biomechanics, (2020); Doherty C., Delahunt E., Caulfield B., Hertel J., Ryan J., Bleakley C., The incidence and prevalence of ankle sprain injury: A systematic review and meta-analysis of prospective epidemiological studies, Sports Medicine, 44, 1, pp. 123-140, (2014); Farquharson C., Greig M., Kinesiology tape mediates soccer- simulated and local peroneal fatigue in soccer players, Research in Sports Medicine, 25, 3, pp. 313-321, (2017); Fong D.T.P., Chan Y.Y., Mok K.M., Yung P.S.H., Chan K.M., Understanding acute ankle ligamentous sprain injury in sports, Sports Medicine, Arthroscopy, Rehabilitation, Therapy and Technology, 1, (2009); Fong D.T.P., Hong Y., Chan L.K., Yung P.S.H., Chan K.M., A systematic review on ankle injury and ankle sprain in sports, Sports Medicine, 37, 1, pp. 73-94, (2007); Fong D.T.P., Leung W.C., Mok K.M., Yung P.S.H., Delayed ankle muscle reaction time in female amateur footballers after the first 15 min of a simulated prolonged football protocol, Journal of Experimental Orthopaedics, 7, 1, pp. 54-62, (2020); Fong D.T.P., Wang D., Chu V.W.S., Chan K.M., Myoelectric stimulation on peroneal muscles with electrodes of the muscle belly size attached to the upper shand gives the best effect in resisting simulated ankle sprain motion, Journal of Biomechanics, 4, 6, pp. 1088-1091, (2013); Gribble P.A., Bleakley C.M., Caulfield B.M., Docherty C.L., Fourchet F., Fong D.T.P., Hertel J., Hiller C.E., Kaminski T.W., McKeon P.O., Refshauge K.M., Verhagen E.A., Vicenzino B.T., Wikstrom E.A., Delahunt E., Evidence review for the 2016 International Ankle Consortium consensus statement on the prevalence, impact and long-term consequences of lateral ankle sprains, British Journal of Sports Medicine, 50, 24, pp. 1496-1505, (2016); Gribble P.A., Hertel J., Denegar C.R., Chronic ankle instability and fatigue create proximal joint alterations during performance of the star excursion balance test, International Journal of Sports Medicine, 28, 3, pp. 236-242, (2007); Gullett J.C., Tillman M.D., Gutierrez G.M., Chow J.W., A biomechanical comparison of back and front squats in healthy trained individuals, Journal of Strength and Conditioning Research, 23, 1, pp. 284-292, (2009); Hakkinen K., Neuromuscular fatigue and recovery in male and female athletes during heavy resistance exercise, International Journal of Sports Medicine, 14, 2, pp. 53-59, (1993); Henry B., McLoda T., Docherty C.L., Schrader J., The effect of plyometric training on peroneal latency, Journal of Sport Rehabilitation, 19, 3, pp. 288-300, (2010); Hertel J., Functional anatomy, pathomechanics, and pathophysiology of lateral ankle instability, Journal of Athletic Training, 37, 4, pp. 364-375, (2002); Hoch M.C., McKeon P.O., Peroneal reaction time after ankle sprain: A systematic review and meta-analysis, Medicine and Science in Sports and Exercise, 46, 3, pp. 546-556, (2014); Jackson N.D., Gutierrez G.M., Kaminski T., The effect of fatigue and habituation on the stretch reflex of the ankle musculature, Journal of Electromyography and Kinesiology, 19, 1, pp. 75-84, (2009); Knight A.C., Weimar W.H., Difference in response latency of the peroneus longus between the dominant and nondominant legs, Journal of Sport Rehabilitation, 20, 3, pp. 321-332, (2011); Konrad P., The ABC of EMG: A practical introduction to kinesiological electromyography, (2006); Konradsen L., Ravn J.B., Prolonged peroneal reaction time in ankle instability, International Journal of Sports Medicine, 12, 3, pp. 290-292, (1991); Lamb S.E., March J.L., Hutton J.L., Nakash R., Cooke M.W., Mechanical supports for acute, severe ankle sprain: A pragmatic, multicentre, randomised controlled trial, Lancet, 373, 9663, pp. 575-581, (2009); Merletti R., Torino P.D., Standards for reporting EMG data, Journal of Electromyography and Kinesiology, 9, 1, (1999); Nicholas C.W., Nuttall F.E., Williams C., The Loughborough intermittent shuttle test: A field test that simulates the activity pattern of soccer, Journal of Sports Sciences, 18, 2, pp. 97-104, (2000); Pavin L.N., Leicht A.S., Gimenes S.V., Da Silva V.C., De Moura Simim M.A., Marocolo M., Da Moto G.R., Can compression stockings reduce the degree of soccer match-induced fatigue in females?, Research in Sports Medicine, 27, 3, pp. 351-364, (2019); Perotto A.O., Anatomical guide for the electromyographer: The limb and trunk, (2005); Pierce C.A., Block R.A., Aguinis H., Cautionary note on reporting eta-squared values from multifactor ANOVA designs, Educational and Psychological Measurement, 64, 6, pp. 916-924, (2004); Rahnama N., Lees A., Reilly T., Electromyography of selected lower-limb muscles fatigued by exercise at the intensity of soccer match-play, Journal of Electromyography and Kinesiology, 16, 3, pp. 257-263, (2006); Reilly T., Drust B., Clarke N., Muscle fatigue during football match-play, Sports Medicine, 38, 5, pp. 357-367, (2008); Sun W., Song Q., Yu B., Zhang C., Mao D., Test-retest reliability of a new device for assessing ankle joint threshold to detect passive movement in healthy adults, Journal of Sports Sciences, 33, 16, pp. 1667-1674, (2015); Sun W., Zhang C., Song Q., Li W., Cong Y., Chang W., Mao D., Hong Y., Effect of 1-year regular Tai Chi on neuromuscular reaction in elderly women: A randomized controlled study, Research in Sports Medicine, 24, 2, pp. 145-156, (2016); Valldecabres R., Richards J., De Benito A.M., The effect of match fatigue in elite badminton players using plantar pressure measurements and the implications to injury mechanisms, Sports Biomechanics, (2020); Xu D.Q., Li J.X., Hong Y., Effect of regular Tai Chi and jogging exercise on neuromuscular reaction in older people, Age and Ageing, 34, 5, pp. 439-444, (2005); Yeung M.S., Chan K.M., So C.H., Yuan W.Y., An epidemiological survey on ankle sprain, British Journal of Sports Medicine, 28, 2, pp. 112-116, (1994)","D.T.P. Fong; National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom; email: d.t.fong@lboro.ac.uk","","Bellwether Publishing, Ltd.","15438627","","RSMEC","33371739","English","Res. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85098548127" "Baida S.; King E.; Gore S.; Richter C.; Franklyn-Miller A.; Moran K.","Baida, Samuel (57201151038); King, Enda (56468730900); Gore, Shane (57190134125); Richter, Chris (7202686489); Franklyn-Miller, Andrew (22234102200); Moran, Kieran (16245608800)","57201151038; 56468730900; 57190134125; 7202686489; 22234102200; 16245608800","Movement Variability and Loading Characteristics in Athletes With Athletic Groin Pain: Changes After Successful Return to Play and Compared With Uninjured Athletes","2022","Orthopaedic Journal of Sports Medicine","10","10","","","","","1","10.1177/23259671221125159","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85141747300&doi=10.1177%2f23259671221125159&partnerID=40&md5=e567dd798dfc1713bf4fe211559fc1d3","Sports Medicine Department, Sports Surgery Clinic, Santry Demesne, Dublin, Ireland; School of Health and Human Performance, Dublin City University, Dublin, Ireland; Insight Centre for Data Analytics, Dublin City University, Dublin, Ireland; Department of Life Sciences, Roehampton University, London, United Kingdom; Centre for Health, Exercise and Sports Medicine, University of Melbourne, Melbourne, Australia","Baida S., Sports Medicine Department, Sports Surgery Clinic, Santry Demesne, Dublin, Ireland, School of Health and Human Performance, Dublin City University, Dublin, Ireland, Insight Centre for Data Analytics, Dublin City University, Dublin, Ireland; King E., Sports Medicine Department, Sports Surgery Clinic, Santry Demesne, Dublin, Ireland, Department of Life Sciences, Roehampton University, London, United Kingdom; Gore S., School of Health and Human Performance, Dublin City University, Dublin, Ireland, Insight Centre for Data Analytics, Dublin City University, Dublin, Ireland; Richter C., Sports Medicine Department, Sports Surgery Clinic, Santry Demesne, Dublin, Ireland; Franklyn-Miller A., Sports Medicine Department, Sports Surgery Clinic, Santry Demesne, Dublin, Ireland, Centre for Health, Exercise and Sports Medicine, University of Melbourne, Melbourne, Australia; Moran K., School of Health and Human Performance, Dublin City University, Dublin, Ireland, Insight Centre for Data Analytics, Dublin City University, Dublin, Ireland","Background: Athletic groin pain (AGP) can lead to altered movement patterns during rapid deceleration and acceleration. However, the effect of AGP on movement variability and loading patterns during such actions remains less clear. Purpose: To investigate, using a continuous lateral hurdle hop task, how movement variability and magnitude measures of 3-dimensional (3D) kinematic, kinetic, and vertical ground-reaction force (vGRF) variables are (1) affected by AGP (AGP vs uninjured controls [CON]) and (2) changed after successful rehabilitation (AGP prerehabilitation vs AGP postrehabilitation vs CON). Study Design: Controlled laboratory study. Methods: A total of 36 athletes diagnosed with AGP and 36 uninjured CON athletes matched on age (18-35 years), level (subelite), and type of sports played (multidirectional field sport) performed a continuous lateral hurdle hop test that involved 10 side-to-side hops over a 15-cm hurdle. The 3D joint kinematic, kinetic, and vGRF variables (total, eccentric, and concentric; ground contact time, peak force, and impulse; and eccentric rate of force development) were examined. The AGP and CON groups were tested at baseline, and the AGP group was retested after participants successfully completed a standardized, exercise-based rehabilitation program targeting intersegmental control. Results: There were no differences in baseline characteristics between the AGP (mean ± SD: age, 27.5 ± 4.8 years; height, 179.8 ± 6.3 cm; mass, 80.3 ± 7.1 kg) and CON (mean ± SD: age, 24.1 ± 4.5 years; height, 181.0 ± 5.8 cm; mass, 80.4 ± 8.2 kg) groups. At baseline, athletes with AGP demonstrated altered loading patterns in the vGRF (longer ground contact times, reduced peak force, and reduced rate of force development) compared with CON athletes, while no significant difference in any movement variability variables was evident. After rehabilitation, the athletes with AGP demonstrated significant changes in transverse and coronal plane hip and trunk kinematics, with no significant differences in vGRF variables compared with the CON group. Conclusion: The differences in baseline vGRF measures between the AGP and CON groups were no longer evident after athletes with AGP underwent rehabilitation. No differences in movement variability were evident between the AGP and CON groups, either before or after rehabilitation. Clinical Relevance: Rehabilitation programs should consider targeting intersegmental hip and trunk movement patterns to positively influence loading patterns in athletes with AGP. © The Author(s) 2022.","biomechanics; groin pain; hip pain; rehabilitation","acceleration; adult; anterior cruciate ligament reconstruction; aponeurosis; Article; athlete; biomechanics; body mass; clinical article; contact time; controlled study; deceleration; exercise; female; ground reaction force; hip; hip pain; hops; human; inguinal pain; inguinal region; kinematics; knee function; male; muscle strength; physiotherapy; provocation; range of motion; rehabilitation care; return to sport; risk factor; soccer; stretching exercise; three-dimensional imaging; training; warm up; young adult","Arampatzis A., Schade F., Walsh M., Bruggemann G.P., Influence of leg stiffness and its effect on myodynamic jumping performance, J Electromyogr Kinesiol, 11, 5, pp. 355-364, (2001); Baida S.R., Gore S.J., Franklyn-Miller A.D., Moran K.A., Does the amount of lower extremity movement variability differ between injured and uninjured populations? 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Drew M.K., Lovell G., Palsson T.S., Chiarelli P.E., Osmotherly P.G., Australian football players experiencing groin pain exhibit reduced subscale scores of Activities of Daily Living and Sport and Recreation on the HAGOS questionnaire: a case-control study, Phys Ther Sport, 26, pp. 7-12, (2017); Duffey M.J., Martin D.F., Cannon D.W., Craven T., Messier S.P., Etiologic factors associated with anterior knee pain in distance runners, Med Sci Sports Exerc, 32, 11, pp. 1825-1832, (2000); Earl J.E., Gluteus medius activity during 3 variations of isometric single-leg stance, J Sport Rehabil, 14, 1, pp. 1-11, (2005); Edwards S., Brooke H.C., Cook J.L., Distinct cut task strategy in Australian football players with a history of groin pain, Phys Ther Sport, 23, pp. 58-66, (2017); Falvey C., King E., Kinsella S., Et al., Athletic groin pain (part 1): a prospective anatomical diagnosis of 382 patients—clinical findings, MRI findings and patient-reported outcome measures at baseline, Br J Sports Med, 50, 7, pp. 1-9, (2015); Falvey E.C., Franklyn-Miller A., McCrory P.R., The groin triangle: a patho-anatomical approach to the diagnosis of chronic groin pain in athletes, Br J Sports Med, 43, 3, pp. 213-220, (2009); Flanagan E., The Reactive Strength Index Revisited; Flanagan E.P., Comyns T.M., The use of contact time and the reactive strength index to optimize fast stretch-shortening cycle training, Strength Cond J, 30, 5, pp. 32-38, (2008); Franklyn-Miller A., Richter C., King E., Et al., Athletic groin pain (part 2): a prospective cohort study on the biomechanical evaluation of change of direction identifies three clusters of movement patterns, Br J Sport Med, 51, 13, pp. 460-468, (2017); Gore S., Franklyn-Miller A., Richter C., Falvey E., Biomechanical complexity: a measure to delineate between athletic groin pain patients and uninjured controls; Gore S.J., Franklyn-Miller A., Richter C., Et al., Is stiffness related to athletic groin pain?, Scand J Med Sci Sports, 28, 6, pp. 1681-1690, (2018); Gore S.J., Franklyn-Miller A., Richter C., King E., Falvey E.C., Moran K., The effects of rehabilitation on the biomechanics of patients with athletic groin pain, J Biomech, 99, (2020); 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Marshall B., Franklyn-Miller A., Moran K., Et al., Biomechanical symmetry in elite rugby union players during dynamic tasks: an investigation using discrete and continuous data analysis techniques, BMC Sports Sci Med Rehabil, 7, 1, (2015); Marshall B.M., Moran K.A., Biomechanical factors associated with jump height: a comparison of cross-sectional and pre-to-posttraining change findings, J Strength Cond Res, 29, 12, pp. 3292-3299, (2015); Morrissey D., Graham J., Screen H., Et al., Coronal plane hip muscle activation in football code athletes with chronic adductor groin strain injury during standing hip flexion, Man Ther, 17, 2, pp. 145-149, (2012); Murphy J.C., O'Malley E., Gissane C., Blake C., Incidence of injury in Gaelic football, Am J Sports Med, 40, 9, pp. 2113-2120, (2012); Neumann D.A., Kinesiology of the hip: a focus on muscular actions, J Orthop Sport Phys Ther, 40, 2, pp. 82-94, (2010); O'Connor D.M., Groin injuries in professional rugby league players: a prospective study, J Sports Sci, 22, 7, pp. 629-636, (2004); 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Van Der Worp H., Vrielink J.W., Bredeweg S.W., Do runners who suffer injuries have higher vertical ground reaction forces than those who remain injury-free? A systematic review and meta-analysis, Br J Sports Med, 50, 8, pp. 1-8, (2016); Winter D.A., Kinematic and kinetic patterns in human gait: variability and compensating effects, Hum Mov Sci, 3, 1-2, pp. 51-76, (1984); Zadpoor A.A., Nikooyan A.A., The relationship between lower-extremity stress fractures and the ground reaction force: a systematic review, Clin Biomech, 26, 1, pp. 23-28, (2011); Zoga A.C., Mullens F.E., Meyers W.C., The spectrum of MR imaging in athletic pubalgia, Radiol Clin North Am, 48, 6, pp. 1179-1197, (2010)","S. Baida; Sports Medicine Department, Sports Surgery Clinic, Dublin, Santry Demesne, Ireland; email: baida.sam@gmail.com","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85141747300" "Faria A.; Gabriel R.; Abrantes J.; Wood P.; Moreira H.","Faria, Aurélio (33067743000); Gabriel, Ronaldo (7103316051); Abrantes, João (56529200800); Wood, Paola (35794031800); Moreira, Helena (35237578400)","33067743000; 7103316051; 56529200800; 35794031800; 35237578400","Mechanical properties of the triceps surae: Differences between football and non-football players","2013","Journal of Sports Sciences","31","14","","1559","1567","8","2","10.1080/02640414.2013.789919","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84885078942&doi=10.1080%2f02640414.2013.789919&partnerID=40&md5=05235379839832a625f95805e9951d57","University of Beira Interior, Sport Science, Rua Marquês DÁvila e Bolama, Covilhã, 6201-001, Portugal; University of Trás-os-Montes and Alto Douro, Sport Sciences, Exercise and Health, Vila Real, Portugal; Universidade Lusófona de Humanidades e Tecnologias, MovLab, Lisbon, Portugal; Department of Biokinetics, Sport and Leisure Sciences, University of Pretoria, Pretoria, South Africa","Faria A., University of Beira Interior, Sport Science, Rua Marquês DÁvila e Bolama, Covilhã, 6201-001, Portugal; Gabriel R., University of Trás-os-Montes and Alto Douro, Sport Sciences, Exercise and Health, Vila Real, Portugal; Abrantes J., Universidade Lusófona de Humanidades e Tecnologias, MovLab, Lisbon, Portugal; Wood P., Department of Biokinetics, Sport and Leisure Sciences, University of Pretoria, Pretoria, South Africa; Moreira H., University of Trás-os-Montes and Alto Douro, Sport Sciences, Exercise and Health, Vila Real, Portugal","We investigated the mechanical properties of the triceps surae between professional, junior, and non-football players. Fifty-nine men participated in this study. The mechanical properties of the right legs' triceps surae were measured in vivo using a free oscillation technique; no significant differences existed between the groups. The mean results for musculo-articular stiffness, damping coefficient, and damping ratio were as follows: professional football players (21523 N· m-1, 330.8 N · s · m-1, and 0.201); junior football players (21063 N · m-1, 274.4 N · s · m-1, and 0.173); and non-players (19457 N · m-1, 281.5 N · s · m-1, and 0.184). When analysed according to position, the results were as follows: defender (21447 N · m-1, 308.6 N · s · m-1, and 0.189); midfielder (20762 N · m-1, 250.7 N · s · m-1, and 0.157); winger (21322 N · m-1, 335.1 N · s · m-1, and 0.212); forward (22085 N · m-1, 416.2 N · s · m-1, and 0.254); and non-players (19457 N · m-1, 281.5 N · s · m-1, and 0.184). Thus, football training, football games, and the position played had no effect on triceps surae mechanical properties. These results may be attributed to opposing adaptations between different types of training that are usually implemented in football. Alternatively, the minimum strain amplitude and/or frequency threshold of the triceps surae required to trigger adaptations of mechanical properties might not be achieved by football players with football training and matches. © 2013 Copyright © 2013 Taylor & Francis.","ankle stiffness; biomechanics; musculo-articular stiffness; soccer","Adolescent; Adult; Ankle Joint; Athletes; Biomechanical Phenomena; Football; Humans; Leg; Male; Muscle, Skeletal; Physical Education and Training; Range of Motion, Articular; Running; Soccer; Young Adult; adolescent; adult; ankle; athlete; biomechanics; comparative study; football; human; joint characteristics and functions; leg; male; physical education; running; skeletal muscle; soccer; young adult; article","Abboud R.J., (i) Relevant foot biomechanics, Current Orthopaedics, 16, 3, pp. 165-179, (2002); Almeida-Silveira M.I., Perot C., Pousson M., Goubel F., Effects of stretch-shortening cycle training on mechanical properties and fibre type transition in the rat soleus muscle, Pflugers Archiv (European Journal of Physiology), 427, 3-4, pp. 289-294, (1994); Arampatzis A., Karamanidis K., Morey-Klapsing G., De Monte G., Stafilidis S., Mechanical properties of the triceps surae tendon and aponeurosis in relation to intensity of sport activity, Journal of Biomechanics, 40, 9, pp. 1946-1952, (2007); Atkinson G., Nevill A.M., Statistical methods for assessing measurement error (reliability) in variables relevant to sports medicine, Sports Medicine, 26, 4, pp. 217-238, (1998); Bland J.M., Altman D.G., Measuring agreement in method comparison studies, Statistical Methods in Medical Research, 8, 2, pp. 135-160, (1999); Bosco C., Tihanyi J., Komi P.V., Fekete G., Apor P., Store and recoil of elastic energy in slow and fast types of human skeletal muscles, Acta Physiologica Scandinavica, 116, 4, pp. 343-349, (1982); Buchanan C.I., Marsh R.L., Effects of long-term exercise on the biomechanical properties of the Achilles tendon of guinea fowl, Journal of Applied Physiology, 90, 1, pp. 164-171, (2001); Butler R.J., Crowell 3rd H.P., Davis I.M., Lower extremity stiffness: Implications for performance and injury, Clinical Biomechanics, 18, 6, pp. 511-517, (2003); Chamari K., Hachana Y., Ahmed Y.B., Galy O., Sghaier F., Chatard J.-C., Wisloff U., Field and laboratory testing in young elite soccer players, British Journal of Sports Medicine, 38, 2, pp. 191-196, (2004); Cornu C., Almeida Silveira M.I., Goubel F., Influence of plyometric training on the mechanical impedance of the human ankle joint, European Journal of Applied Physiology and Occupational Physiology, 76, 3, pp. 282-288, (1997); Ditroilo M., Watsford M., Murphy A., De Vito G., Assessing musculo-articular stiffness using free oscillations theory, measurement and analysis, Sports Medicine, 41, 12, pp. 1019-1032, (2011); Dumke C.L., Pfaffenroth C.M., McBride J.M., McCauley G.O., Relationship between muscle strength, power and stiffness and running economy in trained male runners, International Journal of Sports Physiology and Performance, 5, 2, pp. 249-261, (2010); Dunbar G.M.J., Power K., Fitness profiles of English professional and semi-professional soccer players using a battery of field tests, Science and football III, 3, pp. 27-30, (1996); Faria A., Gabriel R., Abrantes J., Bras R., Moreira H., Triceps-surae musculotendinous stiffness: Relative differences between obese and non-obese postmenopausal women, Clinical Biomechanics, 24, 10, pp. 866-871, (2009); Faria A., Gabriel R., Abrantes J., Bras R., Moreira H., The relationship of body mass index, age and triceps-surae musculotendinous stiffness with the foot arch structure of postmenopausal women, Clinical Biomechanics, 25, 6, pp. 588-593, (2010); Faria A., Gabriel R., Abrantes J., Bras R., Moreira H., Biomechanical properties of the triceps surae muscle-tendon unit in young and postmenopausal women, Clinical Biomechanics, 26, 5, pp. 523-528, (2011); Faria A., Gabriel R., Abrantes J., Bras R., Sousa M., Moreira H., Ankle stiffness in postmenopausal women: Influence of hormone therapy and menopause nature, Climacteric, 13, 3, pp. 265-270, (2009); Fukashiro S., Noda M., Shibayama A., In vivo determination of muscle viscoelasticity in the human leg, Acta Physiologica Scandinavica, 172, 4, pp. 241-248, (2001); Goubel F., Marini J.F., Fibre type transition and stiffness modification of soleus muscle of trained rats, Pflügers Archiv European Journal of Physiology, 410, 3, pp. 321-325, (1987); Granata K.P., Wilson S.E., Massimini A.K., Gabriel R., Active stiffness of the ankle in response to inertial and elastic loads, Journal of Electromyography and Kinesiology, 14, 5, pp. 599-609, (2004); Grosset J.F., Piscione J., Lambertz D., Perot C., Paired changes in electromechanical delay and musculo-tendinous stiffness after endurance or plyometric training, European Journal of Applied Physiology, 105, 1, pp. 131-139, (2009); Hobara H., Kimura K., Omuro K., Gomi K., Muraoka T., Sakamoto M., Kanosue K., Differences in lower extremity stiffness between endurance-trained athletes and untrained subjects, Journal of Science and Medicine in Sport, 13, 1, pp. 106-111, (2010); Hoff J., Training and testing physical capacities for elite soccer players, Journal of Sports Sciences, 23, 6, pp. 573-582, (2005); Houk J.C., Regulation of stiffness by skeletomotor reflexes, Annual Review of Physiology, 41, pp. 99-114, (1979); Hunter D.G., Coveney V., Spriggs J., Investigation into the effect of static stretching on the active stiffness and damping characteristics of the ankle joint plantar flexors, Physical Therapy in Sport, 2, 1, pp. 15-22, (2001); Hunter D.G., Spriggs J., Investigation into the relationship between the passive flexibility and active stiffness of the ankle plantar-flexor muscles, Clinical Biomechanics, 15, 8, pp. 600-606, (2000); Kubo K., Kanehisa H., Fukunaga T., Effects of resistance and stretching training programmes on the viscoelastic properties of human tendon structures in vivo, Journal of Physiology, 538, 1, pp. 219-226, (2002); Kubo K., Kanehisa H., Ito M., Fukunaga T., Effects of isometric training on the elasticity of human tendon structures in vivo, Journal of Applied Physiology, 91, 1, pp. 26-32, (2001); Kubo K., Kanehisa H., Kawakami Y., Fukunaga T., Elastic properties of muscle-tendon complex in long-distance runners, European Journal of Applied Physiology, 81, 3, pp. 181-187, (2000); Kunz M., 265 million playing football, FIFA Magazine, pp. 10-15, (2007); Mueller M.J., The ankle and foot complex, Joint structure and function: A comprehensive analysis, pp. 437-477, (2005); Murphy A.J., Watsford M.L., Coutts A.J., Pine M.J., Reliability of a test of musculotendinous stiffness for the triceps-surae, Physical Therapy in Sport, 4, 4, pp. 175-181, (2003); Narici M.V., Hoppeler H., Kayser B., Landoni L., Claassen H., Gavardi C., Cerretelli P., Human quadriceps cross-sectional area, torque and neural activation during 6 months strength training, Acta Physiologica Scandinavica, 157, 2, pp. 175-186, (1996); Pousson M., Perot C., Goubel F., Stiffness changes and fibre type transitions in rat soleus muscle produced by jumping training, Pflügers Archiv European Journal of Physiology, 419, 2, pp. 127-130, (1991); Reeves N.D., Maganaris C.N., Narici M.V., Effect of strength training on human patella tendon mechanical properties of older individuals, The Journal of Physiology, 548, 3, pp. 971-981, (2003); Rosenbaum D., Becker H.P., Plantar pressure distribution measurements. Technical background and clinical applications, Foot and Ankle Surgery, 3, 1, pp. 1-14, (1997); Shorten M.R., Muscle elasticity and human performance, Medicine and Sport Science, 25, pp. 1-18, (1987); Shorten M.R., Kerwin D.G., In-vivo elasticity of the human soleus muscle, Biomechanics: Basic and Applied research, pp. 619-624, (1987); Spurrs R.W., Murphy A.J., Watsford M.L., The effect of plyometric training on distance running performance, European Journal of Applied Physiology, 89, 1, pp. 1-7, (2003); Electronic statistics textbook, (2011); Walshe A.D., Wilson G.J., Murphy A.J., The validity and reliability of a test of lower body musculotendinous stiffness, European Journal of Applied Physiology and Occupational Physiology, 73, 3-4, pp. 332-339, (1996); Wilson G.J., Murphy A.J., The use of isometric tests of muscular function in athletic assessment, Sports Medicine, 22, 1, pp. 19-37, (1996); Wilson G.J., Murphy A.J., Pryor J.F., Musculotendinous stiffness: Its relationship to eccentric, isometric, and concentric performance, Journal of Applied Physiology, 76, 6, pp. 14-19, (1994); Woo S.L.-Y., Ritter M.A., Amiel D., Sanders T.M., Gomez M.A., Kuei S.C., Akeson W.H., The biomechanical and biochemical properties of swine tendons - long term effects of exercise on the digital extensors, Connective Tissue Research, 7, 3, pp. 177-183, (1980); Yildirim A., Emre A.K., Korkusuz F., Cicek S., Physiological profiles of soccer players with respect to playing positions, Science and football VI - The proceedings of the sixth world congress on science and football, pp. 371-373, (2008)","A. Faria; University of Beira Interior, Sport Science, Rua Marquês DÁvila e Bolama, Covilhã, 6201-001, Portugal; email: afaria@ubi.pt","","","1466447X","","JSSCE","23672576","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-84885078942" "Mildenberger C.; Aragona A.; Guissani C.; Panci N.; Delgado-García G.","Mildenberger, Clarisa (57219727908); Aragona, Alfio (58919079900); Guissani, Carlos (58919743800); Panci, Nahuel (58919517900); Delgado-García, Gabriel (57208244251)","57219727908; 58919079900; 58919743800; 58919517900; 57208244251","Sprint biomechanics assessment with low-cost systems: a reliability study","2024","Sport Sciences for Health","","","","","","","0","10.1007/s11332-024-01209-5","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85192393584&doi=10.1007%2fs11332-024-01209-5&partnerID=40&md5=e16c54ec418e73d0b9d32141f308ba0a","Department of Biomechanics, Faculty of Physical Activity and Faculty of Physiotherapy, University of Gran Rosario, Rosario, Argentina; Department of Training, Faculty of Physical Activity, University of Gran Rosario, Rosario, Argentina; Department of Physical Therapy and Sports Medicine, Club Atlético Rosario Central, Rosario, Argentina; SER Research Group, Department of Physical Activity and Sport Sciences, Center of Higher Education Alberta Giménez, Affiliated to Pontifical University of Comillas, Palma, Spain","Mildenberger C., Department of Biomechanics, Faculty of Physical Activity and Faculty of Physiotherapy, University of Gran Rosario, Rosario, Argentina; Aragona A., Department of Training, Faculty of Physical Activity, University of Gran Rosario, Rosario, Argentina, Department of Physical Therapy and Sports Medicine, Club Atlético Rosario Central, Rosario, Argentina; Guissani C., Department of Training, Faculty of Physical Activity, University of Gran Rosario, Rosario, Argentina; Panci N., Department of Physical Therapy and Sports Medicine, Club Atlético Rosario Central, Rosario, Argentina; Delgado-García G., SER Research Group, Department of Physical Activity and Sport Sciences, Center of Higher Education Alberta Giménez, Affiliated to Pontifical University of Comillas, Palma, Spain","The individual determination of force-velocity and power-velocity profiles during sprint is of great interest to coaches and sports physiotherapists. As a very short action, sprint evaluation requires a sufficiently accurate and reliable system. The aim of this study was to analyze the reliability of the free software Kinovea®, compared to the MySprint App (Apple Inc, USA). Thirty-one soccer players were evaluated and a comparative study was carried out, where 62 sprints of 30-m were analyzed by two rates: experienced and non-experienced. Vertical poles were placed at 2.5, 5, 7.5, 10, 15, 20, 25 and 30 m. All the sprints were recorded in slow motion and HD image quality. Comparisons of partial and total times were made, in addition to force, velocity and power outputs. No differences were shown between the two measurement methods for the different sprint times (ICC = 0.676–0.941, P < 0.001). The intra-rater reliability of total time in the experienced rater was almost perfect: ICC = 0.993 for Kinovea and 0.984 for the MySprint app; the intra-rater reliability for non-experienced one was 0.833 for Kinovea and 0.862 for the MySprint app. Comparing both methods, the ICC was 0.896. There were no significant differences between the variables force, velocity and power (P > 0.05). This study shows that Kinovea + Excel spreadsheet is a reliable method, also an accessible and low-cost option for sport professionals. However, experience using the software is required, but not for the use of the MySprint app, which is an advantage for non-experienced testers. © The Author(s), under exclusive licence to Springer-Verlag Italia S.r.l., part of Springer Nature 2024.","2D; Kinovea; MySprint app; Sport performance; Sprint mechanics","","Romero-Franco N., Jimenez-Reyes P., Castano-Zambudio A., Capelo-Ramirez F., Rodriguez-Juan J.J., Gonzalez-Hernandez J., Et al., Sprint performance and mechanical outputs computed with an iPhone app: Comparison with existing reference methods, Eur J Sport Sci, 17, 4, pp. 386-392, (2017); Samozino P., Rabita G., Dorel S., Slawinski J., Peyrot N., Saez de Villarreal E., A simple method for measuring power, force, velocity properties, and mechanical effectiveness in sprint running, Scand J Med Sci Sports, (2016); Delgado-Garcia G., Rueda Boza J., Moreno Vecino B., Benito Colio B., Precisión de dos apps móviles (Lapstrack y Videography) para medir el tiempo del esprint de ida y vuelta. En: Viaje didáctico por el cuerpo y la mente: experiencia desde la abstracción científico matemática a la educación física, (2022); Morin J.B., Samozino P., Murata M., Cross M., Nagahara R., A simple method for computing sprint acceleration kinetics from running velocity data: Replication study with improved design, J Biomech, (2019); Stenroth L., Vartiainen P., Karjalainen P.A., Force-velocity profiling in ice hockey skating: reliability and validity of a simple, low-cost field method, Sports Biomech, (2020); Landis J.R., Koch G.G., The measurement of observer agreement for categorical data, Biometrics, 33, 1, pp. 159-174, (1977); Jimenez-Reyes P., Garcia-Ramos A., Parraga-Montilla J.A., Morcillo-Losa J.A., Cuadrado-Penafiel V., Castano-Zambudio A., Et al., Seasonal changes in the sprint acceleration force-velocity profile of elite male soccer players, J Strength Cond Res, 36, 1, pp. 70-74, (2022); Edouard P., Lahti J., Nagahara R., Samozino P., Navarro L., Guex K., Et al., Low horizontal force production capacity during sprinting as a potential risk factor of hamstring injury in football, Int J Environ Res Public Health, 18, 15, (2021); Fernandez-Galvan L.M., Jimenez-Reyes P., Cuadrado-Penafiel V., Casado A., Sprint performance and mechanical force-velocity profile among different maturational stages in young soccer players, Int J Environ Res Public Health, 19, 3, (2022); Larson D.P., Noonan B.C., A simple video-based timing system for on-ice team testing in ice hockey: a technical report, J Strength Cond Res, 28, 9, pp. 2697-2703, (2014); Bond C.W., Willaert E.M., Noonan B.C., Comparison of three timing systems: reliability and best practice recommendations in timing short-duration sprints, J Strength Cond Res, 31, 4, pp. 1062-1071, (2017); Damsted C., Nielsen R.O., Larsen L.H., Reliability of video-based quantification of the knee- and hip angle at foot strike during running, Int J Sports Phys Ther, 10, 2, pp. 147-154, (2015); Balsalobre-Fernandez C., Tejero-Gonzalez C.M., del Campo-Vecino J., Bavaresco N., The concurrent validity and reliability of a low-cost, high-speed camera-based method for measuring the flight time of vertical jumps, J Strength Cond Res, 28, 2, pp. 528-533, (2014); Dingenen B., Barton C., Janssen T., Benoit A., Malliaras P., Test-retest reliability of two-dimensional video analysis during running, Phys Ther Sport, 33, 40, (2018); Grigg J., Haakonssen E., Rathbone E., Orr R., Keogh J., The validity and intra-tester reliability of markerless motion capture to analyse kinematics of the BMX Supercross gate start, Sports Biomech, 17, 3, pp. 383-401, (2018); Haugen T.A., Tonnessen E., Seiler S.K., The difference is in the start: impact of timing and start procedure on sprint running performance, J Strength Cond Res, 26, 2, pp. 473-479, (2012); Mildenberger C., Utilidades del software Kinovea Una revisión narrativa, Rev Asoc Kinesiol Deporte, 24, 86, pp. 10-25, (2021); Busca B., Quintana M., Padulles J., High-speed cameras in sport and exercise: practical applications in sports training and performance analysis, Aloma Rev Psicol Ciènc Educ Esport, 34, pp. 13-23, (2016); Pueo B., High speed cameras for motion analysis in sports science, J Hum Sport Exerc, 11, pp. 53-73, (2016); Lee Y., Min K.E., Park J., Correlation and reliability of two field tests for vertical jump height, Asian J Kinesiol, 22, 1, pp. 9-14, (2020); Jimenez-Reyes P., Samozino P., Garcia-Ramos A., Cuadrado-Penafiel V., Brughelli M., Morin J.B., Relationship between vertical and horizontal force-velocity-power profiles in various sports and levels of practice, PeerJ, 6, (2018)","C. Mildenberger; Department of Biomechanics, Faculty of Physical Activity and Faculty of Physiotherapy, University of Gran Rosario, Rosario, Argentina; email: cmildenberger@ugr.edu.ar","","Springer-Verlag Italia s.r.l.","18247490","","","","English","Sport Sci. Health","Article","Article in press","All Open Access; Green Open Access","Scopus","2-s2.0-85192393584" "Bessenouci H.; Haceini A.","Bessenouci, Hai (57216924570); Haceini, A. (57216917371)","57216924570; 57216917371","Analysis of some biomechanical variables influencing the accuracy of direct free kicks in soccer","2019","Computer Methods in Biomechanics and Biomedical Engineering","22","sup1","","S340","S342","2","1","10.1080/10255842.2020.1714936","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85085335284&doi=10.1080%2f10255842.2020.1714936&partnerID=40&md5=75366bf56b457f56750e57cea34ddd6a","University of Chlef/Laboratory APSSES, Algeria; University of Setif 2/Laboratory SPAPSA, Algeria","Bessenouci H., University of Chlef/Laboratory APSSES, Algeria; Haceini A., University of Setif 2/Laboratory SPAPSA, Algeria","[No abstract available]","accuracy; biomechanical variables; direct free kick; Soccer","accuracy; adult; ball flight time; ball momentum; biomechanics; body fat; body mass; human; human experiment; kinetics; leg speed; lower leg; normal human; Note; priority journal; soccer; soccer player; sports and sport related phenomena; sports science; thigh speed; velocity; young adult","Alcock A., Analysis of direct free kicks in the women’s football World Cup 2007, Eur J Sport Sci, 10, 4, pp. 279-284, (2010); Alcock A., Gilleard W., Brown N.A.T., Baker J., Hunter A., Initial ball flight characteristics of curve and instep kicks in elite women’s football, J Appl Biomech, 28, 1, pp. 70-77, (2012); Andersen T.B., Collisions in soccer kicking, Sports Eng, 2, 2, pp. 121-125, (1999); Barfield W.R., The biomechanics of kicking in soccer, Clin Sports Med, 17, 4, pp. 711-728, (1998); Bray K., Kerwin D., Modelling the flight of a soccer ball in a direct free kick, J Sports Sci, 21, 2, pp. 75-85, (2003); De Luca R., Faella O., Halliday D., An ideal freekick, Eur J Phys, 38, 1, (2017); Haceini A., L’impact de l’activité perceptive sur la motricité d’un athlète d’arts martiaux lors d’un combat Kung Fu Wushu (Sanda): Approche thermodynamique, Sien Prat Activit Phys Sport Artist, 8, 2, pp. 35-42, (2015); Hong S., Kazama Y., Nakayama M., Asai T., Ball impact dynamics of knuckling shot in soccer, Proc Eng, 34, pp. 200-205, (2012); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: a review, J Sports Sci, 28, 8, pp. 805-817, (2010); Shinkai H., Nunome H., Isokawa M., Ikegami Y., Ball impact dynamics of instep soccer kicking, MedSci Sports Exerc, 41, 4, pp. 889-897, (2009); Tsaousidis N., Zatsiorsky V., Two types of ball-effector interaction and their relative contribution to soccer kicking, Human Movement Science, 15, 6, pp. 861-876, (1996)","A. Haceini; University of Setif 2/Laboratory SPAPSA, Algeria; email: ayoub.haceini.mhs@hotmail.fr","","Taylor and Francis Ltd.","10255842","","","","English","Comput. Methods Biomech. Biomed. Eng.","Note","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85085335284" "Shan G.; Liu Y.; Gorges T.; Zhang X.; Witte K.","Shan, Gongbing (7005942347); Liu, Yufeng (57222255263); Gorges, Tom (59074991200); Zhang, Xiang (54381067000); Witte, Kerstin (23487565200)","7005942347; 57222255263; 59074991200; 54381067000; 23487565200","Pilot Study on the Biomechanical Quantification of Effective Offensive Range and Ball Speed Enhancement of the Diving Header in Soccer: Insights for Skill Advancement and Application Strategy","2024","Applied Sciences (Switzerland)","14","2","946","","","","1","10.3390/app14020946","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85192479298&doi=10.3390%2fapp14020946&partnerID=40&md5=7ea5524c9969e2fbbcef9b04d20e134b","Biomechanics Laboratory, Faculty of Arts & Science, University of Lethbridge, Lethbridge, T1K 3M4, AB, Canada; Department of Physical Education, Xinzhou Teachers’ University, Xinzhou, 034000, China; Bereich für Sportwissenschaft, Otto-von-Guericke-Universität Magdeburg, Magdeburg, 39104, Germany","Shan G., Biomechanics Laboratory, Faculty of Arts & Science, University of Lethbridge, Lethbridge, T1K 3M4, AB, Canada, Department of Physical Education, Xinzhou Teachers’ University, Xinzhou, 034000, China; Liu Y., Department of Physical Education, Xinzhou Teachers’ University, Xinzhou, 034000, China; Gorges T., Bereich für Sportwissenschaft, Otto-von-Guericke-Universität Magdeburg, Magdeburg, 39104, Germany; Zhang X., Department of Physical Education, Xinzhou Teachers’ University, Xinzhou, 034000, China; Witte K., Bereich für Sportwissenschaft, Otto-von-Guericke-Universität Magdeburg, Magdeburg, 39104, Germany","This pioneering study presents an in-depth biomechanical examinations of soccer’s diving header, aiming to quantify its impact on ball speed enhancement (BSE) and effective offensive range (EOR). Despite the diving header’s widespread acclaim and historical significance, there remains a dearth of scientific scrutiny into its biomechanical intricacies. Employing an innovative research design featuring a static hanging ball at varied offensive distances and heights, this study replicates diverse header scenarios. The results of 3D motion quantification have shown that a physically excellent player (identified through the maximal standing long jump test) could reach an EOR around 2.64 times his body height. Furthermore, this study unveils that proficient players could attain BSE surpassing 9 m/s, signifying the diving header’s heightened efficacy compared to traditional heading techniques, which could only result in 4.5 m/s. Correlation analyses unveil noteworthy relationships, highlighting the pivotal role of head speed at impact and the influence of minimizing speed drop and temporal disparities for amplified effectiveness. Considerations for optimizing diving header execution are introduced, emphasizing the necessity for targeted training programs. Despite acknowledged limitations inherent to its pilot nature, this exploration furnishes foundational knowledge to guide subsequent research and practical applications, providing valuable insights into soccer training and skill development through a biomechanical lens. © 2024 by the authors.","3D motion capture; biomechanical modeling; speed drop; time offset","","FIFA Big Count 2006: 270 Million People Active in Football, (2007); Sawe B.E., The Most Popular Sports in the World, (2018); Zhang X., Shan G., Liu F., Yu Y., Jumping side volley in soccer—A biomechanical preliminary study on the flying kick and its coaching know-how for practitioners, Appl. Sci, 10, (2020); Lees A., Nolan L., The biomechanics of soccer: A review, J. Sports Sci, 16, pp. 211-234, (1998); Shan G., Visentin P., Zhang X., Hao W., Yu D., Bicycle kick in soccer: Is the virtuosity systematically entrainable?, Sci. Bull, 60, pp. 819-821, (2015); Harris D., Golden Goal: Keith Houchen for Coventry City v Tottenham (1987), (2016); TOP 10 GOALS|2014 FIFA World Cup Brazil, (2015); FIFA Puskás Award: Ten Best Goals of the Year Announced, (2014); Shan G., Soccer Scoring Techniques: How Much Do We Know Them Biomechanically?—A State-of-the-Art Review, Appl. Sci, 12, (2022); Fluffsta, Keith Houchen 1987 FA Cup Diving Header, (2009); Robin van Persie Header—FIFA Puskas Award 2014 FINALIST, (2014); Shan G., Zhang X., Soccer Scoring Techniques—A Biomechanical Re-Conception of Time and Space for Innovations in Soccer Research and Coaching, Bioengineering, 9, (2022); Shan G., The Practicality and Effectiveness of Soccer Scoring Techniques Revealed by Top Elite Soccer Scorers, Phys. Act. Rev, 11, pp. 99-111, (2023); Mielke D., Soccer Fundamentals, (2003); Zhang X., Shan G., Liu F., Yong S., Meng M., Diversity of Scoring, Ingenuity of Striking, Art of Flying—Conceptual and Systematical Identification of Soccer Scoring Techniques, Phys. Act. Rev, 9, pp. 86-99, (2021); Luxbacher J.A., Soccer: Steps to Success, (2013); Wesson J., The Science of Soccer, (2002); Mourao L., de Jesus K., Roesler H., Machado L.J., Fernandes R.J., Vilas-Boas J.P., Vaz M.A., Effective swimmer’s action during the grab start technique, PLoS ONE, 10, (2015); Blanksby B., Nicholson L., Elliott B., Swimming: Biomechanical analysis of the grab, track and handle swimming starts: An intervention study, Sports Biomech, 1, pp. 11-24, (2002); Monteiro R.L.M., Bedo B.L.S., Monteiro P.H.M., de Andrade F., Moura F.A., Cunha S.A., Torres R., Memmert D., Santiago P.R.P., Penalty feet positioning rule modification and laterality effect on soccer goalkeepers’ diving kinematics, Sci. Rep, 12, (2022); Ibrahim R., Kingma I., de Boode V., Faber G., van Dieen J., Kinematic and kinetic analysis of the goalkeeper’s diving save in football, J. Sports Sci, 37, pp. 313-321, (2019); Wood R., Standing Long Jump Test (Broad Jump), (2008); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomech, 4, pp. 59-72, (2005); Hamel J., Dufour S., Fortin D., Case Study Methods, (1993); Bennett A., Case study methods: Design, use, and comparative advantages, Models, Numbers, and Cases: Methods for Studying International Relations, pp. 19-55, (2004); Reilly T., Williams A.M., Science and Soccer, (2003); Erdmann W., Application of biomechanics in soccer training, Routledge Handbook of Biomechanics and Human Movement Science, pp. 525-537, (2008); Bekris E., Gioldasis A., Bekris V., Gissis I., Komsis S., Mitrousis I., The relationship of kicking ball velocity with anthropometric and physiological factors in soccer, Sport Sci. Rev, 24, pp. 71-87, (2015); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, J. Sports Sci, 28, pp. 805-817, (2010); Bailey C.A., Quantitative Analysis in Exercise and Sport Science, (2021); Shan G., Bohn C., Anthropometrical data and coefficients of regression related to gender and race, Appl. Ergon, 34, pp. 327-337, (2003); Crowinshield R.D., Brand R.A., The effects of walking velocity and age on hip kinematics and kinetics, Clin. Orthop. Relat. Res, 132, pp. 140-144, (1978); Chehab E., Andriacchi T., Favre J., Speed, age, sex, and body mass index provide a rigorous basis for comparing the kinematic and kinetic profiles of the lower extremity during walking, J. Biomech, 58, pp. 11-20, (2017); Ohji S., Aizawa J., Hirohata K., Ohmi T., Mitomo S., Jinno T., Koga H., Yagishita K., Single-leg hop distance normalized to body height is associated with the return to sports after anterior cruciate ligament reconstruction, J. Exp. Orthop, 8, (2021); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med. Sci. Sports Exerc, 30, pp. 917-927, (1998); Chi K.-J., Schmitt D., Mechanical energy and effective foot mass during impact loading of walking and running, J. Biomech, 38, pp. 1387-1395, (2005); Lenetsky S., Nates R., Brughelli M., Harris N., Is effective mass in combat sports punching above its weight?, Hum. Mov. Sci, 40, pp. 89-97, (2015); Neto O.P., Magini M., Saba M.M., The role of effective mass and hand speed in the performance of kung fu athletes compared with nonpractitioners, J. Appl. Biomech, 23, pp. 139-148, (2007); Adamec J., Mai V., Graw M., Schneider K., Hempel J.-M., Schopfer J., Biomechanics and injury risk of a headbutt, Int. J. Leg. Med, 127, pp. 103-110, (2013); Babbs C.F., Biomechanics of heading a soccer ball: Implications for player safety, Sci. World J, 1, pp. 281-322, (2001); Shewchenko N., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football. Part 1: Development of biomechanical methods to investigate head response, Br. J. Sports Med, 39, pp. i10-i25, (2005); Caccese J.B., Kaminski T.W., Minimizing head acceleration in soccer: A review of the literature, Sports Med, 46, pp. 1591-1604, (2016); Shewchenko N., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football. Part 2: Biomechanics of ball heading and head response, Br. J. Sports Med, 39, (2005); Spiotta A.M., Bartsch A.J., Benzel E.C., Heading in soccer: Dangerous play?, Neurosurgery, 70, pp. 1-11, (2012); Magill R., Anderson D.I., Motor Learning and Control, (2010); Dowling B., Fleisig G.S., Kinematic comparison of baseball batting off of a tee among various competition levels, Sports Biomech, 15, pp. 255-269, (2016); McCue M., Wattie N., To Tee, Or Not to Tee: Exploring the Relationship between Representative Practice and Performance in Highly Skilled Baseball Hitters, J. Expert, 4, pp. 19-32, (2021)","G. Shan; Biomechanics Laboratory, Faculty of Arts & Science, University of Lethbridge, Lethbridge, T1K 3M4, Canada; email: g.shan@uleth.ca","","Multidisciplinary Digital Publishing Institute (MDPI)","20763417","","","","English","Appl. Sci.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85192479298" "Wahlquist V.E.; Glutting J.J.; Kaminski T.W.","Wahlquist, Victoria E. (57209139561); Glutting, Joseph J. (7004435281); Kaminski, Thomas W. (7005758157)","57209139561; 7004435281; 7005758157","Examining the influence of the Get aHEAD Safely in Soccer™ program on head impact kinematics and neck strength in female youth soccer players","2024","Research in Sports Medicine","32","1","","17","27","10","1","10.1080/15438627.2022.2079982","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85131047182&doi=10.1080%2f15438627.2022.2079982&partnerID=40&md5=0775ebef57b48e2e9c03c07e59332bd9","Athletic Training Research Laboratory, University of Delaware, Newark, DE, United States; School of Education, University of Delaware, Newark, DE, United States","Wahlquist V.E., Athletic Training Research Laboratory, University of Delaware, Newark, DE, United States; Glutting J.J., School of Education, University of Delaware, Newark, DE, United States; Kaminski T.W., Athletic Training Research Laboratory, University of Delaware, Newark, DE, United States","The objective was to examine the efficacy of the Get aHEAD Safely in Soccer™ intervention on head impact kinematics and neck strength in female youth soccer players. The control group (CG) consisted of 13 players (age: 11.0 ± 0.4 yrs), while the experimental group (EG) consisted of 14 players (age: 10.6 ± 0.5 yrs). Head impact kinematics included peak linear acceleration (PLA), peak rotational acceleration (PRA), and peak rotational velocity (PRV). Pre- and post-season measures included strength measures of neck/torso flexion (NF/TF) and extension (NE/TE). Data were analysed using a multilevel linear model and ANOVA techniques. No differences in PLA, PRA, or PRV were observed between groups. The EG showed significant improvement in NF strength while the CG showed significant improvement in NE strength. Both groups significantly improved in TF pre- to post-season. The foundational strength components of the Get aHEAD Safely in Soccer program appear to show a benefit in youth soccer players beginning to learn the skill of purposeful heading. © 2022 Informa UK Limited, trading as Taylor & Francis Group.","concussion; Football; muscle strength; repetitive head impacts; wearable sensors","Acceleration; Adolescent; Biomechanical Phenomena; Brain Concussion; Child; Female; Head; Humans; Neck; Polyesters; Soccer; polyester; acceleration; adolescent; biomechanics; brain concussion; child; female; head; human; neck; soccer","Beaudouin F., Gioftsidou A., Larsen M.N., Lemmink K., Drust B., Modena R., Espinola J.R., Meiu M., Vouillamoz M., Meyer T., The UEFA heading study: Heading incidence in children’s and youth’ football (soccer) in eight European countries, Scandinavian Journal of Medicine & Science in Sports, 30, 8, pp. 1506-1517, (2020); Caccese J.B., Kaminski T.W., Minimizing head acceleration in soccer: A review of the literature, Sports Medicine, 46, 11, pp. 1591-1604, (2016); Caccese J.B., Lamond L.C., Buckley T.A., Kaminski T.W., Reducing purposeful headers from goal kicks and punts may reduce cumulative exposure to head acceleration, Research in Sports Medicine, 24, 4, pp. 407-415, (2016); Caccese J.B., Buckley T.A., Tierney R.T., Rose W.C., Glutting J.J., Kaminski T.W., Sex and age differences in head acceleration during purposeful soccer heading, Research in Sports Medicine (Print), 26, 1, pp. 64-74, (2018); Caccese J.B., Buckley T.A., Tierney R.T., Arbogast K.B., Rose W.C., Glutting J.J., Kaminski T.W., Head and neck size and neck strength predict linear and rotational acceleration during purposeful soccer heading, Sports Biomechanics, 17, 4, pp. 462-476, (2018); Chrisman S.P.D., Donald C.L.M., Friedman S., Andre J., Rowhani-Rahbar A., Drescher S., Stein E., Holm M., Evans N., Poliakov A.V., Ching R.P., Schwien C.C., Vavilala M.S., Rivara F.P., Head impact exposure during a weekend youth soccer tournament, Journal of Child Neurology, 31, 8, pp. 971-978, (2016); Chrisman S.P.D., Ebel B.E., Stein E., Lowry S.J., Rivara F.P., Head impact exposure in youth soccer and variation by age and sex, Clinical Journal of Sport Medicine, 29, 1, pp. 3-10, (2019); Collins C.L., Fletcher E.N., Fields S.K., Kluchurosky L., Rohrkemper M.K., Comstock R.D., Cantu R.C., Neck strength: A protective factor reducing risk for concussion in high school sports, Journal of Primary Prevention, 35, 5, pp. 309-319, (2014); Cummiskey B.R., Characterization and evaluation of head impact sensors and varsity football helmets, (2015); Eckner J.T., Goshtasbi A., Curtis K., Kapshai A., Myyra E., Franco L.M., Favre M., Jacobson J.A., Ashton-Miller J.A., Feasibility and effect of cervical resistance training on head kinematics in youth athletes: A pilot study, American Journal of Physical Medicine & Rehabilitation, 97, 4, pp. 292-297, (2018); English football introduces new guidance for heading ahead of 2021–22 season, (2021); Gutierrez G.M., Conte C., Lightbourne K., The relationship between impact force, neck strength, and neurocognitive performance in soccer heading in adolescent females, Pediatric Exercise Science, 26, 1, pp. 33-40, (2014); Harriss A., Johnson A.M., Walton D.M., Dickey J.P., Head impact magnitudes that occur from purposeful soccer heading depend on the game scenario and head impact location, Musculoskeletal Science and Practice, 40, pp. 53-57, (2019); Huber C.M., Patton D.A., McDonald C.C., Jain D., Simms K., Lallo V.A., Margulies S.S., Master C.L., Arbogast K.B., Sport- and gender-based differences in head impact exposure and mechanism in high school sports, Orthopaedic Journal of Sports Medicine, 9, 3, (2021); Kalichova M., Lukasek M., Soccer heading evaluation during learning process using an accelerometer, Journal of Physical Education and Sport, 19, 2, pp. 335-343, (2019); Kaminski T.W., Weinstein S., Wahlquist V.E., A comprehensive prospective examination of purposeful heading in American interscholastic and collegiate soccer players, Science and Medicine in Football, 4, 2, pp. 101-110, (2020); Kumahara R., Sasaki S., Sasaki E., Kimura Y., Yamamoto Y., Tsuda E., Ishibashi Y., Effect of a simple core muscle training program on trunk muscle strength and neuromuscular control among pediatric soccer players, Journal of Experimental Orthopaedics, 8, 1, (2021); Kuo C., Sheffels J., Fanton M., Yu I.B., Hamalainen R., Camarillo D., Passive cervical spine ligaments provide stability during head impacts, Journal of the Royal Society Interface, 16, 154, (2019); Lamond L.C., Caccesse J.B., Buckley T.A., Glutting J., Kaminski T.W., Linear acceleration in direct head contact across impact type, player position, and playing scenario in collegiate women’s soccer, Journal of Athletic Training, 53, 2, pp. 115-121, (2018); Mihalik J.P., Guskiewicz K.M., Marshall S.W., Greenwald R.M., Blackburn J.T., Cantu R.C., Does cervical muscle strength in youth ice hockey players affect head impact biomechanics?, Clinical Journal of Sport Medicine, 21, 5, pp. 416-421, (2011); Miller L.E., Pinkerton E.K., Fabian K.C., Wu L.C., Espeland M.A., Lamond L.C., Miles C.M., Camarillo D.B., Stitzel J.D., Urban J.E., Characterizing head impact exposure in youth female soccer with a custom-instrumented mouthpiece, Research in Sports Medicine, 28, 1, pp. 55-71, (2020); Muller C., Zentgraf K., Neck and trunk strength training to mitigate head acceleration in youth soccer players, Journal of Strength and Conditioning Research, 34, 1, pp. 1-9, (2020); Peek K., Elliott J.M., Orr R., Higher neck strength is associated with lower head acceleration during purposeful heading in soccer: A systematic review, Journal of Science and Medicine in Sport, 23, 5, pp. 453-462, (2020); Queen R.M., Weinhold P.S., Kirkendall D.T., Yu B., Theoretical study of the effect of ball properties on impact force in soccer heading, Medicine and Science in Sports and Exercise, 35, 12, pp. 2069-2076, (2003); Sandmo S.B., Andersen T.E., Koerte I.K., Bahr R., Head impact exposure in youth football—Are current interventions hitting the target?, Scandinavian Journal of Medicine & Science in Sports, 30, 1, pp. 193-198, (2020); Tiernan S., Sullivan D.O., Byrne G., Repeatability and reliability evaluation of a wireless head-band sensor, The Asian Journal of Kinesiology, 20, 4, pp. 70-75, (2018); Get aHEAD Safely in Soccer; Concussions and head injuries, (2015); Who is US Youth Soccer?, (2020); Wahlquist V.E., Kaminski T.W., Analysis of head impact biomechanics in youth female soccer players following the Get aHEAD Safely in Soccer TM heading intervention, Sensors, 21, 11, (2021)","T.W. Kaminski; Human Performance Laboratory, University of Delaware, Newark, Room 159 Fred Rust Ice Arena, 547 South College Avenue, 19716, United States; email: kaminski@udel.edu","","Routledge","15438627","","RSMEC","35611394","English","Res. Sports Med.","Article","Final","","Scopus","2-s2.0-85131047182" "Pisani L.; Pilot N.; Lüscher S.; Mackler L.; Nocciolino L.M.; Ferretti J.L.; Cointry G.R.; Capozza R.F.","Pisani, Leandro (57204559688); Pilot, Nicolás (57204558191); Lüscher, Sergio (57189351783); Mackler, Leandro (57210121407); Nocciolino, Laura Marcela (25633225500); Ferretti, José Luis (7102140041); Cointry, Gustavo Roberto (6602581718); Capozza, Ricardo Francisco (6701420013)","57204559688; 57204558191; 57189351783; 57210121407; 25633225500; 7102140041; 6602581718; 6701420013","Original demonstration of the interference of the expansive cortical modeling effects of one training on those of another further training (Modeling ‘sets limits’ for remodeling); [Demostración original de la interferencia de los efectos modeladores corticales expansivos de un entrenamiento sobre los de otro ulterior (La modelación ‘marca el terreno’ para la remodelación)]","2020","Actualizaciones en Osteologia","16","1","","26","34","8","1","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091469490&partnerID=40&md5=dc3ce569ec7b248ef3e484b344f3695a","Unidad de Estudios Biomecánicos Osteo-Musculares (UDEBOM), Centro Universitario de Asistencia, Docencia e Investigación (CUADI), Universidad Gran Rosario (UGR), Argentina; Centro de Estudios de Metabolismo Fosfo-cálcico (CEMFoC), Facultad de Ciencias Médicas, UNR, Rosario, Argentina","Pisani L., Unidad de Estudios Biomecánicos Osteo-Musculares (UDEBOM), Centro Universitario de Asistencia, Docencia e Investigación (CUADI), Universidad Gran Rosario (UGR), Argentina; Pilot N., Unidad de Estudios Biomecánicos Osteo-Musculares (UDEBOM), Centro Universitario de Asistencia, Docencia e Investigación (CUADI), Universidad Gran Rosario (UGR), Argentina; Lüscher S., Centro de Estudios de Metabolismo Fosfo-cálcico (CEMFoC), Facultad de Ciencias Médicas, UNR, Rosario, Argentina; Mackler L., Centro de Estudios de Metabolismo Fosfo-cálcico (CEMFoC), Facultad de Ciencias Médicas, UNR, Rosario, Argentina; Nocciolino L.M., Unidad de Estudios Biomecánicos Osteo-Musculares (UDEBOM), Centro Universitario de Asistencia, Docencia e Investigación (CUADI), Universidad Gran Rosario (UGR), Argentina, Centro de Estudios de Metabolismo Fosfo-cálcico (CEMFoC), Facultad de Ciencias Médicas, UNR, Rosario, Argentina; Ferretti J.L., Centro de Estudios de Metabolismo Fosfo-cálcico (CEMFoC), Facultad de Ciencias Médicas, UNR, Rosario, Argentina; Cointry G.R., Centro de Estudios de Metabolismo Fosfo-cálcico (CEMFoC), Facultad de Ciencias Médicas, UNR, Rosario, Argentina; Capozza R.F., Centro de Estudios de Metabolismo Fosfo-cálcico (CEMFoC), Facultad de Ciencias Médicas, UNR, Rosario, Argentina","The modeling-dependent, geometrical expansion of cortical bone induced by the mechanical environment could be hard to modify by subsequent stimulations with a different directionality. The current study aimed to demonstrate that in young, untrained individuals, training in soccer or rugby enhances the geometric properties of the fibula cortical shell in such a way that the geometrical changes could interfere on the effects of a second training in which the loads are induced in a different direction, e.g. long-distance running. The original findings reported herein confirm our hypothesis and support 1) The relevance of the use of the foot (external rotation and eversion produced by peroneus muscles) to determine fibula geometry (improved development of indicators of bone mass and design) as evidenced by the increasing nature of the effects induced by running < soccer < rugby trainings; 2) The predominance of those effects on the ability of the fibula to resist lateral bending in the central-proximal region (insertion of peroneus muscles), and to resist buckling in the distal region (the main cause and site of the most frequent bone fractures), and 3) The interaction of the effects of a previous training with those of a subsequent training with a different orientation of the loads when the former induced a modeling-dependent expansion of the cortex. Our results support the proposed hypothesis with original arguments by showing that a first, expansive effect induced on cortical bone modeling would set the stage the manifestation of any subsequent effect derived from mechanical stimuli. © 2020, Asociacion Argentina de Osteologia y Metabolismo Mineral. All rights reserved.","Bone biomechanics; Bone mechanostat; Bone structure; Bone-muscle interactions; Fibula","Article; bone mass; cortical bone; fracture; human; rugby; soccer; training","Hart NH, Nimphius S, Rantalainen T, Ireland A, Siafarikas A, Newton RU., Mechanical basis of bone strength: influence of bone material, bone structure and muscle action, J Musculoskelet Neuronal Interact, 17, pp. 114-139, (2017); Fritz J, Duckham RL, Rantalainen T, Rosengren BE, Karlsson MK, Daly RM., Influence of a school-based physical activity intervention on cortical bone mass distribution: A 7-year intervention study, Calcif Tissue Int, 99, pp. 443-453, (2016); Feldman S, Capozza RF, Mortartino PA, Reina PS, Ferretti JL, Rittweger J, Cointry GR., Site and sex effects on tibia structure in distance runners and untrained people, Med Sci Sport Exerc, 44, pp. 1580-1588, (2012); Frost HM., Bone’s mechanostat: a 2003 update, Anat Rec A Discov Mol Cell Evol Biol, 275, pp. 1081-1101, (2003); Rittweger J, Ireland A, Luscher S, Et al., Fibula: The forgotten bone – May it provide some insight on a wider scope for bone mechanostat control?, Curr Osteoporos Rep, 16, pp. 775-778, (2018); Marchi D, Shaw CN., Variation of fibular robusticity reflects variation in mobility patterns, J Hum Evol, 61, pp. 609-616, (2011); Luscher SH, Nocciolino KM, Pilot N, Et al., Differences in the cortical structure of the whole fibula and tibia between long-distance runners and untrained controls. Toward a wider conception of the biomechanical regulation of bone structure, Front Endorinol, 10, (2019); Cointry GR, Nocciolino LM, Ireland A, Et al., Structural differences in cortical shell properties between upper and lower human fibula as described by pQCT serial scans. A biomechanical interpretation, Bone, 90, pp. 185-194, (2016); Marchi D., Relative strength of the tibia and fibula and locomotor behavior in hominoids, J Hum Evol, 53, pp. 647-655, (2007); Barnett CH, Napier JR., The rotatory motility of the fibula in eutherian mammals, J Anat, 87, pp. 11-21, (1953); Bramble DM, Lieberman DE., Endurance running and the evolution of Homo, Nature, 432, pp. 345-352, (2004); Capozza RF, Feldman S, Mortarino P, Et al., Structural analysis of the human tibia by tomographic (pQCT) serial scans, J Anat, 216, pp. 470-481, (2010); Sherbondy PS, Sebastianelli WJ., Stress fractures of the medial malleolus and distal fibula, Clin Sports Med, 25, pp. 129-137, (2006); Huiskes R., If bone is the answer, then what is que question?, J Anat, 197, pp. 145-156, (2000); Ferretti JL., Biomechanical properties of bones, pp. 143-162, (1998); Frost HM, Ferretti JL, Jee WSS., Some roles of mechanical usage, muscle strength and the mechanostat in skeletal physiology, disease, and research, Calcif Tissue Int, 62, pp. 1-7, (1997); Bertram JE, Biewener AA., Bone curvature sacrificing strength for load predictability?, J Theor Biol, 131, pp. 75-92, (1988); Pearson OM, Lieberman DE., The aging of Wolff’s “Law”: ontogeny and responses to mechanical loading in cortical bone, Yearb Phys Anthropol, 47, pp. 63-69, (2004); Schaffler MB, Burr DB, Jungers WL, Ruff CB., Structural and mechanical indicators of limb specialization in primates, Folia Primatol, 45, pp. 61-75, (1985)","G.R. Cointry; Centro de Estudios de Metabolismo Fosfo-cálcico (CEMFoC), Facultad de Ciencias Médicas, UNR, Rosario, Argentina; email: gcointry@gmail.com","","Asociacion Argentina de Osteologia y Metabolismo Mineral","16698975","","","","Spanish","Actual. Osteologia","Article","Final","","Scopus","2-s2.0-85091469490" "Maciel D.G.; Dantas G.A.F.; Cerqueira M.S.; Barboza J.A.M.; Caldas V.V.A.; de Barros A.C.M.; Varela R.R.; Magalhães D.H.; de Brito Vieira W.H.","Maciel, Daniel Germano (57210947526); Dantas, Glauko André Figueiredo (57210981167); Cerqueira, Mikhail Santos (57070398100); Barboza, Jean Artur Mendonça (57210948916); Caldas, Vinícius Vieira De Alencar (57218168661); de Barros, Alef Cavalcanti Matias (57188640663); Varela, Ronan Romeno (57218169922); Magalhães, Diego Helps (57218160392); de Brito Vieira, Wouber Hérickson (55292886100)","57210947526; 57210981167; 57070398100; 57210948916; 57218168661; 57188640663; 57218169922; 57218160392; 55292886100","Peak torque angle, acceleration time and time to peak torque as additional parameters extracted from isokinetic test in professional soccer players: a cross-sectional study","2023","Sports biomechanics","22","9","","1108","1119","11","1","10.1080/14763141.2020.1784260","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85174641706&doi=10.1080%2f14763141.2020.1784260&partnerID=40&md5=6416bc2fa7c66eadddedfe0696c445e0","Department of Physical Therapy, Federal University of Rio Grande Do Norte, Natal, Brazil","Maciel D.G., Department of Physical Therapy, Federal University of Rio Grande Do Norte, Natal, Brazil; Dantas G.A.F., Department of Physical Therapy, Federal University of Rio Grande Do Norte, Natal, Brazil; Cerqueira M.S., Department of Physical Therapy, Federal University of Rio Grande Do Norte, Natal, Brazil; Barboza J.A.M., Department of Physical Therapy, Federal University of Rio Grande Do Norte, Natal, Brazil; Caldas V.V.A., Department of Physical Therapy, Federal University of Rio Grande Do Norte, Natal, Brazil; de Barros A.C.M., Department of Physical Therapy, Federal University of Rio Grande Do Norte, Natal, Brazil; Varela R.R., Department of Physical Therapy, Federal University of Rio Grande Do Norte, Natal, Brazil; Magalhães D.H., Department of Physical Therapy, Federal University of Rio Grande Do Norte, Natal, Brazil; de Brito Vieira W.H., Department of Physical Therapy, Federal University of Rio Grande Do Norte, Natal, Brazil","This study investigated additional and traditional variables from isokinetic test of thigh muscles in soccer players across different field positions. One hundred and eighty-nine athletes performed maximal concentric isokinetic knee contractions on dominant (DL) and non-dominant limb (NDL) at 60º/s and 240º/s. The additional outcomes peak torque angle (AngPT), acceleration time (AcT) and time to peak torque (TPT) and traditional outcomes Peak torque (PT), total work (TW) and power (Pw) were extracted from the exam. Goalkeepers (GK), side backs (SB), central backs (CB), central defender midfielders (CDM), central attacking midfielders (CAM) and forwards (FW) were considered. Comparisons between limbs and positions demonstrated that SB extensors of the DL presented TPT lower (p = 0.006) and AngPT higher (p = 0.011) than NDL at 60°/s. CDM extensors of the DL showed lower TPT at 60°/s (p = 0.003) and 240°/s (p = 0.024). CAM flexors of the DL showed lower TPT (p = 0.026) and AcT (p = 0.021) at 240°/s than NDL. CB, CDM and CAM extensors of the NDL showed higher PT, TW and Pw than DL (p < 0.05). In conclusion, there are muscle imbalances between limbs in SB, CDM and CAM and across different field positions.","asymmetry; injury prevention; performance; risk of injury; Strength","Acceleration; Biomechanical Phenomena; Cross-Sectional Studies; Humans; Muscle Strength; Muscle, Skeletal; Soccer; Torque; acceleration; biomechanics; cross-sectional study; human; muscle strength; physiology; skeletal muscle; soccer; torque","","","","","17526116","","","32673150","English","Sports Biomech","Article","Final","","Scopus","2-s2.0-85174641706" "Pfile K.; Boling M.; Baellow A.; Zuk E.; Nguyen A.-D.","Pfile, Kate (54403652700); Boling, Michelle (14055392700); Baellow, Andrea (56685758300); Zuk, Emma (57196195645); Nguyen, Anh-Dung (12805987900)","54403652700; 14055392700; 56685758300; 57196195645; 12805987900","Greater Core Endurance Identifies Improved Mechanics During Jump Landing in Female Youth Soccer Athletes","2024","Women in Sport and Physical Activity Journal","32","1","","","","","0","10.1123/wspaj.2022-0039","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85183927722&doi=10.1123%2fwspaj.2022-0039&partnerID=40&md5=4cc9eecced686b5208fa1279822cbed0","College of Charleston, Charleston, SC, United States; University of North Florida, Jacksonville, FL, United States; Smith & Nephew, New York, NY, United States; University of Connecticut, Storrs, CT, United States; West Virginia University, Morgantown, WV, United States","Pfile K., College of Charleston, Charleston, SC, United States; Boling M., University of North Florida, Jacksonville, FL, United States; Baellow A., Smith & Nephew, New York, NY, United States; Zuk E., University of Connecticut, Storrs, CT, United States; Nguyen A.-D., West Virginia University, Morgantown, WV, United States","Female soccer athletes are at greater risk for anterior cruciate ligament injury compared with males. Risk factors include altered landing biomechanics and diminished core neuromuscular control, measured using advanced laboratory equipment. There is a need for a clinical measure of core muscle function to better understand kinesiological factors within a female, youth athlete population. The purpose was to determine whether sagittal and frontal plane kinematics during a jump landing task differ based on levels of core endurance in female youth soccer athletes. Participants included healthy, female soccer athletes ages 8–17 years (M = 12.3 years, SD = 2.4 years), height (M =1.52 m,SD =0.16m),andbodymass(M =46.0 kg, SD = 13.7 kg). A quantitative data descriptive laboratory study in a field-based setting was conducted. Sixty-six participants performed the side plank test for time to failure. Three-dimensional biomechanics were collected, and initial contact and peak trunk, hip, and knee joint angles were identified during the deceleration phase of a double-leg jump-landing task. The group with the lowest side plank time displayed decreased knee flexion at initial contact (p =.02) and peak knee flexion (p =.03) and decreased peak hip flexion angles (p =.01). There were no additional statistically significant differences among groups (p >.05). Female youth soccer athletes who have reduced core endurance also display decreased hip and knee flexion, which may place them at risk for anterior cruciate ligament injury. © 2024 University of North Carolina at Greensboro (UNCG).","ACL injury; core stability; lower extremity biomechanics","","Alentorn-Geli E., Myer G.D., Silvers H.J., Samitier G., Romero D., Lazaro-Haro C., Cugat R., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 2: A review of prevention programs aimed to modify risk factors and to reduce injury rates, Knee Surgery Sports Traumatology Arthroscopy, 17, 8, pp. 859-879, (2009); Arundale A.J.H., Silvers-Granelli H.J., Marmon A., Zarzycki R., Dix C., Snyder-Mackler L., Changes in biomechanical knee injury risk factors across two collegiate soccer seasons using the 11+ prevention program, Scandinavian Journal of Medicine Science and Sports, 28, 12, pp. 2592-2603, (2018); Bell A.L., Pedersen D.R., Brand R.A., A comparison of the accuracy of several hip center location prediction methods, Journal of Biomechanics, 23, 6, pp. 617-621, (1990); Blackburn J.T., Padua D.A., Influence of trunk flexion on hip and knee joint kinematics during a controlled drop landing, Clinical Biomechanics, 23, 3, pp. 313-319, (2008); Blackburn J.T., Padua D.A., Sagittal-plane trunk position, landing forces, and quadriceps electromyographic activity, Journal of Athletic Training, 44, 2, pp. 174-179, (2009); Burns R.D., Hannon J.C., Saint-Maurice P.F., Welk G., Concurrent and criterion-referenced validity of trunk muscular fitness tests in school-aged children, Advances in Physical Education, 4, 2, pp. 41-50, (2014); Davies P.L., Rose J.D., Motor skills of typically developing adolescents: Awkwardness or improvement?, Physical & Occupa-tional Therapy in Pediatrics, 20, 1, pp. 19-42, (2000); De Blasier C., De Ridder R., Willems T., Vanden Bossche L., Danneels L., Roosen P., Impaired core stability as a risk factor for the development of lower extremity overuse injuries: A prospective cohort study, American Journal of Sports Medicine, 47, 7, pp. 1713-1721, (2019); de Lava P., Adjustments to Zatsiorsky-Seluyanov’s segment inertia parameters, Journal of Biomechanics, 29, 9, pp. 1223-1230, (1996); Escamilla R.F., Lewis C., Pecson A., Imamura R., Andrews J.R., Muscle activation among supine, prone, and side position exercises with and without a Swiss ball, Sports Health, 8, 4, pp. 372-379, (2016); Faul F., Erdfelder E., Lang A.G., Buchner A., G*Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences, Behavioral Research Methods, 39, 2, pp. 175-191, (2007); The “11+” manual: A complete warm-up program to prevent injuries, (2021); Gornitzky A.L., Lott A., Yellin J.L., Fabricant P.D., Lawrence J.T., Ganley T.J., Sport specific yearly risk and incidence of anterior cruciate ligament tears in high school athletes: A systematic review and meta-analysis, American Journal of Sports Medicine, 44, 10, pp. 2716-2723, (2017); Haddas R., Hooper T., James C.R., Sizer P.S., Volitional spine stabilization during a drop vertical jump from different landing heights: Implications for anterior cruciate ligament injury, Journal of Athletic Training, 51, 12, pp. 1003-1012, (2016); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes. A prospective study, American Journal of Sports Medicine, 27, 6, pp. 699-706, (1999); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., van den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, American Journal of Sports Medicine, 33, 4, pp. 492-501, (2005); Kibler W.B., Press J., Sciascia A., The role of core stability in athletic function, Sports Medicine, 36, 3, pp. 189-198, (2006); Larwa J., Stoy C., Chafetz R.S., Boniello M., Franklin C., Stiff landings, core stability, and dynamic knee valgus: A systematic review on documented anterior cruciate lgiament ruptures in male and female athletes, International Journal of Environmental Research and Public Health, 18, 7, pp. 3826-3839, (2021); Leppanen M., Pasanen K., Krosshaug T., Kannus P., Vasankari T., Kujala U.M., Bahr R., Pettunen J., Parkkari J., Sagittal plane hip, knee, and ankle biomechanics and the risk of anterior cruciate ligament injury: A prospective study, Orthopedic Journal of Sports Medicine, 5, 12, pp. 1-6, (2017); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Knarr J.F., Thomas S.D., Griffin L.Y., Kirkendall D.T., Garrett W., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes: 2-year follow-up, American Journal of Sports Medicine, 33, 7, pp. 1003-1010, (2005); Maniar N., Cole M.H., Bryant A.L., Opar D.A., Muscle force contributions to anterior cruciate ligament loading, Sports Medicine, 52, pp. 1737-1750, (2022); Martinez-Romero M.T., Ayala F., Aparicio-Sarmiento A., De Ste Croix M., Sainz De Baranda P., Reliability of five trunk flexion and extension endurance field-based tests in high school-aged adolescents: ISQUIOS programme, Journal of Sports Sciences, 39, 16, pp. 1860-1872, (2021); Padua D.A., DiStefano L.J., Beutler A.I., de la Motte S.J., DiStefano M.J., Marshall S.W., The landing error scoring system as a screening tool for an anterior cruciate ligament injury-prevention program in elite-youth soccer athletes, Journal of Athletic Training, 50, 6, pp. 589-595, (2015); Pedley J.S., DiCasare C.A., Lloyd R.S., Oliver J.L., Ford K.R., Hewett T.E., Myer G.D., Maturity alters drop vertical jump landing force-time profiles but not performance outcomes in adolescent females, Scandinavian Journal of Medicine & Science in Sports, 31, 11, pp. 2055-2063, (2021); Pfile K.R., Gribble P.A., Buskirk G.E., Meserth S.M., Pietrosimone B.G., Sustained improvements in dynamic balance and landing mechanics after a 6-week neuromuscular training program in college women’s basketball players, Journal of Sport Rehabilitation, 25, 3, pp. 233-240, (2016); Pollard C.D., Sigward S.M., Powers C.M., Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments, Clinical Biomechanics, 25, 2, pp. 42-146, (2010); Root H., Marshall A.N., Thatcher A., Snyder Valier A.R., Valovich McLeod T.C., Bay R.C., Sport specialization and fitness and functional task performance among youth competitive gynmasts, Journal of Athletic Training, 54, 10, pp. 1095-1104, (2019); Saeterbakken A.H., Fimland M.S., Navarsete J., Kroken T., van den Tillaar R., Muscle activity and the association between core strength, core endurance and core stability, Journal of Novel Physiotherapy and Physical Rehabilitation, 2, 3, pp. 55-61, (2015); Santos M.S., Behm D.G., Barbado D., DeSantano J.M., Da Silva-Grigoletto M.E., Core endurance relationships with athletic and functional performance in inactive people, Frontiers in Physiology, 10, 1490, pp. 1-8, (2019); Sheehan F.T., Sipprell W.H., Boden B.P., Dynamic sagittal plane trunk control during anterior cruciate ligament injury, American Journal of Sports Medicine, 40, 5, pp. 1068-1074, (2012); Shultz S.J., Cruz M.R., Casey E., Dompier T.P., Ford K.R., Pietrosimone B.P., Schmitz R.J., Taylor J.B., Sex-specific changes in physical risk factors for anterior cruciate ligament injury by chronological age and stages of growth and maturation from 8 to 18 years of age, Journal of Athletic Training, 57, pp. 830-876, (2022); Shultz S.J., Schmitz R.J., Benjaminse A., Collins M., Ford K., Kulas A.S., ACL research retreat VII: An update on anterior cruciate ligament injury risk factor identification, screening, and prevention, Journal of Athletic Training, 50, 10, pp. 1076-1093, (2015); Sinclair J.K., Taylor P.J., Hobbs S.J., Alpha level adjustments for multiple dependent variable analyses and their applicability—A review, International Journal of Sports Sciences and Engineering, 7, 1, pp. 17-20, (2014); Soligard T., Myklebust G., Steffen K., Holme I., Silvers H., Bizzini M., Junge A., Dvorak J., Bahr R., Andersen T.E., Comprehensive warm-up programme to prevent injuries in young female footballers: Cluster randomised controlled trial, BMJ, 337, (2008); van der Weyden M.S., Toczko M., Fyock-Martin M., Martin J., Relationship between a maximum plank assessment and fitness, health behaviors, and moods in tactical athletes: An exploratory study, International Journal of Environmental Research and Public Health, 19, 12832, pp. 1-14, (2022); Waitman M.C., Chia L., Ducatti M.H.M., Bazett-Jones D.M., Pappas E., de Azevedo F.M, Briani R.V., Trunk biomechanics in individuals with knee disorders: A systematic review with evidence gap map and meta-analysis, Sports Medicine—Open, 8, pp. 145-165, (2022); Waldhelm A., Li L., Endurance tests are the most reliable core stability related measurements, Journal of Sport and Health Science, 1, 2, pp. 121-128, (2012); Werner B.C., Yang S., Looney A.M., Gwathmey F.W., Trends in pediatric and adolescent anterior cruciate ligament injury and reconstruction, Journal of Pediatric Orthopedics, 36, 5, pp. 447-452, (2016); Withrow T.J., Huston L.J., Wojtys E.M., Ashton-Miller J.A., The relationship between quadriceps muscle force, knee flexion, and anterior cruciate ligament strain in an in vitro simulated jump landing, American Journal of Sports Medicine, 34, 2, pp. 269-274, (2006); Zazulak B.T., Cholewicki J., Reeves N.P., Neuromuscular control of trunk stability: Clinical implications for sports injury prevention, Journal of American Academy of Orthopedic Surgeons, 16, 9, pp. 497-505, (2008); Zazulak B.T., Hewett T.E., Reeves N.P., Goldberg B., Cholewicki J., Deficits in neuromuscular control of the trunk predict knee injury risk: A prospective biomechanical-epidemiologic study, American Journal of Sports Medicine, 35, 7, pp. 1123-1130, (2007)","K. Pfile; College of Charleston, Charleston, United States; email: pfilekr@cofc.edu","","Human Kinetics Publishers Inc.","10636161","","","","English","Women Sport Phys. Act. J.","Article","Final","","Scopus","2-s2.0-85183927722" "Alves B.M.O.; Scoz R.D.; Burigo R.L.; Ferreira I.C.; Ramos A.P.S.; Mendes J.J.B.; Ferreira L.M.A.; Amorim C.F.","Alves, Bruno Mazziotti Oliveira (57202754615); Scoz, Robson Dias (57189907286); Burigo, Ricardo Lima (57202757595); Ferreira, Isabella Christina (57209102134); Ramos, Ana Paula Silveira (57477634000); Mendes, Jose Joao Baltazar (57194835015); Ferreira, Luciano Maia Alves (7202856789); Amorim, Cesar Ferreira (23024072100)","57202754615; 57189907286; 57202757595; 57209102134; 57477634000; 57194835015; 7202856789; 23024072100","Association between Concentric and Eccentric Isokinetic Torque and Unilateral Countermovement Jump Variables in Professional Soccer Players","2022","Journal of Functional Morphology and Kinesiology","7","1","25","","","","1","10.3390/jfmk7010025","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85125763682&doi=10.3390%2fjfmk7010025&partnerID=40&md5=fcd4ad641146be3d1315d47bc2e07ec5","Masters and Doctoral Program in Physiotherapy, University City of Sao Paulo (Unicid), Sao Paulo, 03071-000, Brazil; Department of Physical Therapy and Biomechanics, Arsenal Football Club, London, N7-7AJ, United Kingdom; Physiotherapy Department, University of South of Santa Catarina (Unisul), Sao Jose, 88137-270, Brazil; Laboratory of Physical and Functional Assessment (LAFF), Interdisciplinary Center of Investigation Egas Monis (CiiEM), Caparica, Setubal, 2829-511, Portugal; Lab Corinthians R9, Sport Club Corinthians Paulista, Sao Paulo, 03828-000, Brazil; Laboratoire de Recherche BioNR, Université du Quebec, Saguenay, G7H-2B1, QC, Canada","Alves B.M.O., Masters and Doctoral Program in Physiotherapy, University City of Sao Paulo (Unicid), Sao Paulo, 03071-000, Brazil, Department of Physical Therapy and Biomechanics, Arsenal Football Club, London, N7-7AJ, United Kingdom; Scoz R.D., Masters and Doctoral Program in Physiotherapy, University City of Sao Paulo (Unicid), Sao Paulo, 03071-000, Brazil; Burigo R.L., Masters and Doctoral Program in Physiotherapy, University City of Sao Paulo (Unicid), Sao Paulo, 03071-000, Brazil; Ferreira I.C., Masters and Doctoral Program in Physiotherapy, University City of Sao Paulo (Unicid), Sao Paulo, 03071-000, Brazil; Ramos A.P.S., Physiotherapy Department, University of South of Santa Catarina (Unisul), Sao Jose, 88137-270, Brazil; Mendes J.J.B., Laboratory of Physical and Functional Assessment (LAFF), Interdisciplinary Center of Investigation Egas Monis (CiiEM), Caparica, Setubal, 2829-511, Portugal; Ferreira L.M.A., Laboratory of Physical and Functional Assessment (LAFF), Interdisciplinary Center of Investigation Egas Monis (CiiEM), Caparica, Setubal, 2829-511, Portugal; Amorim C.F., Masters and Doctoral Program in Physiotherapy, University City of Sao Paulo (Unicid), Sao Paulo, 03071-000, Brazil, Laboratory of Physical and Functional Assessment (LAFF), Interdisciplinary Center of Investigation Egas Monis (CiiEM), Caparica, Setubal, 2829-511, Portugal, Lab Corinthians R9, Sport Club Corinthians Paulista, Sao Paulo, 03828-000, Brazil, Laboratoire de Recherche BioNR, Université du Quebec, Saguenay, G7H-2B1, QC, Canada","Isokinetic tests have been highly valuable to athletic analysis, but their cost and technical operation turn them inaccessible. The purpose of this study was to verify the correlation between unilateral countermovement jump variables and isokinetic data. Thirty-two male professional soccer players were subjected to the isokinetic testing of both knee extensors and flexors in concentric and eccentric muscle contractions. They also executed unilateral countermovement vertical jumps (UCMJ) to compare maximum height, ground reaction force, and impulse power with isokinetic peak torque. Data analysis was conducted through Pearson correlation and linear regression. A high correlation was found between dominant unilateral extensor concentric peak torque and the UCMJ maximum height of the dominant leg. The non-dominant leg jump showed a moderate correlation. No other variable showed statistical significance. Linear regression allowed the generation of two formulae to estimate the peak torque from UCMJ for dominant and non-dominant legs. Although few studies were found to compare our results, leading to more studies being needed, a better understanding of the unilateral countermovement jump may be used in the future as a substitute to the expensive and technically demanding isokinetic testing when it is unavailable, allowing the assessment of lower limb physical asymmetries in athletic or rehabilitation environments. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.","Biomechanics; Performance analysis; Vertical jump","","Turner A., Stewart P., Strength and Conditioning for Soccer Players, Strength Cond. J, 36, pp. 1-13, (2014); Santos C.S., Pinto J.R., Scoz R.D., Alves B.M., Oliveira P.R., Soares W.J., DA Silva R.A., Vieira E.R., Amorim C.F., What Is the Traditional Method of Resistance Training: A Systematic Review, J. Sports Med. Phys. Fit, 2, pp. 9-15, (2021); Burigo R.L., Scoz R.D., Alves B.M.D.O., Da Silva R.A., Melo-Silva C.A., Vieira E.R., Hirata R.P., Amorim C.F., Concentric and Eccentric Isokinetic Hamstring Injury Risk among 582 Professional Elite Soccer Players: A 10-Years Retrospective Cohort Study, BMJ Open Sport Exerc. Med, 6, (2020); Scoz R.D., Alves B.M.O., Burigo R.L., Vieira E.R., Ferreira L.M.A., da Silva R.A., Hirata R.P., Amorim C.F., Strength Development According with Age and Position: A 10-Year Study of 570 Soccer Players, BMJ Open Sport Exerc. Med, 7, (2021); Scoz R.D., Amorim C.F., Mazziotti B.O.A., Silva R.A.D., Vieira E.R., Lopes A.D., Gabriel R.E.C.D., Diagnostic Validity of an Isokinetic Testing to Identify Partial Anterior Cruciate Ligament Injuries, J. Sport Rehabil, 1, pp. 1086-1092, (2019); Ja C., Seasonal Variation in Fitness Variables in Professional Soccer Players, J. Sports Med. Phys. Fit, 41, pp. 463-469, (2001); Haugen T., Soccer Seasonal Variations in Sprint Mechanical Properties and Vertical Jump Performance, Kinesiology, 50, pp. 102-108, (2017); Nedelec M., McCall A., Carling C., Legall F., Berthoin S., Dupont G., The Influence of Soccer Playing Actions on the Recovery Kinetics after a Soccer Match, J. Strength Cond. Res, 28, pp. 1517-1523, (2014); Bishop C., Brashill C., Abbott W., Read P., Lake J., Turner A., Jumping Asymmetries Are Associated With Speed, Change of Direction Speed, and Jump Performance in Elite Academy Soccer Players, J. Strength Cond. Res, 35, pp. 1841-1847, (2021); Bishop C., Read P., Bromley T., Brazier J., Jarvis P., Chavda S., Turner A., The Association Between Interlimb Asymmetry and Athletic Performance Tasks: A Season-Long Study in Elite Academy Soccer Players, J. Strength Cond. Res, 36, pp. 787-795, (2020); Weinhandl J.T., Irmischer B.S., Sievert Z.A., Fontenot K.C., Influence of Sex and Limb Dominance on Lower Extremity Joint Mechanics during Unilateral Land-and-Cut Manoeuvres, J. Sports Sci, 35, pp. 166-174, (2017); Mani K., Brechue W.F., Friesenbichler B., Maffiuletti N.A., Validity and Reliability of a Novel Instrumented One-Legged Hop Test in Patients with Knee Injuries, Knee, 24, pp. 237-242, (2017); Fousekis K., Tsepis E., Vagenas G., Lower Limb Strength in Professional Soccer Players: Profile, Asymmetry, and Training Age, J. Sports Sci. Med, 9, pp. 364-373, (2010); Von Elm E., Altman D.G., Egger M., Pocock S.J., Gotzsche P.C., Vandenbroucke J.P., The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) Statement: Guidelines for Reporting Observational Studies, Lancet, 370, pp. 1453-1457, (2007); Motheral B., Brooks J., Clark M.A., Crown W.H., Davey P., Hutchins D., Martin B.C., Stang P., A Checklist for Retrospective Database Studies—Report of the ISPOR Task Force on Retrospective Databases, Value Health, 6, pp. 90-97, (2003); Harriss D.J., MacSween A., Atkinson G., Ethical Standards in Sport and Exercise Science Research: 2020 Update, Int. J. Sports Med, 40, pp. 813-817, (2019); Sliwowski R., Grygorowicz M., Wieczorek A., Jadczak L., The Relationship between Jumping Performance, Isokinetic Strength and Dynamic Postural Control in Elite Youth Soccer Players, J. Sports Med. Phys. Fit, 58, pp. 1226-1233, (2018); Pincivero D.M., Coelho A.J., Campy R.M., Gender Differences in Perceived Exertion during Fatiguing Knee Extensions, Med. Sci. Sports Exerc, 36, pp. 109-117, (2004); Robertson R.J., Goss F.L., Metz K.F., Perception of Physical Exertion during Dynamic Exercise: A Tribute to Professor Gunnar A. V, Borg. Percept. Mot. Ski, 86, pp. 183-191, (1998); Kannus P., Isokinetic Evaluation of Muscular Performance: Implications for Muscle Testing and Rehabilitation, Int. J. Sports Med, 15, pp. S11-S18, (1994); Logerstedt D.S., Snyder-Mackler L., Ritter R.C., Axe M.J., Orthopedic Section of the American Physical Therapy Association. Knee Pain and Mobility Impairments: Meniscal and Articular Cartilage Lesions, J. Orthop. Sports Phys. Ther, 40, pp. A1-A35, (2010); Menzel H.-J., Chagas M.H., Szmuchrowski L.A., Araujo S.R.S., de Andrade A.G.P., de Jesus-Moraleida F.R., Analysis of Lower Limb Asymmetries by Isokinetic and Vertical Jump Tests in Soccer Players, J. Strength Cond. Res, 27, pp. 1370-1377, (2013); O'Malley E., Richter C., King E., Strike S., Moran K., Franklyn-Miller A., Moran R., Countermovement Jump and Isokinetic Dynamometry as Measures of Rehabilitation Status After Anterior Cruciate Ligament Reconstruction, J. Athl. Train, 53, pp. 687-695, (2018); Paasuke M., Ereline J., Gapeyeva H., Knee Extension Strength and Vertical Jumping Performance in Nordic Combined Athletes, J. Sports Med. Phys. Fit, 41, pp. 354-361, (2001); VanZile A.W., Reineke D.M., Snyder M.J., Jones D.D., Dade R.L., Almonroeder T.G., Establishing Normative Values for Inter-Limb Kinetic Symmetry During Landing in Uninjured Adolescent Athletes, Int. J. Sports Phys. Ther, 16, pp. 1067-1075, (2021)","R.D. Scoz; Masters and Doctoral Program in Physiotherapy, University City of Sao Paulo (Unicid), Sao Paulo, 03071-000, Brazil; email: robsonscoz@hotmail.com; C.F. Amorim; Masters and Doctoral Program in Physiotherapy, University City of Sao Paulo (Unicid), Sao Paulo, 03071-000, Brazil; email: cfaemg@gmail.com","","MDPI","24115142","","","","English","J. Funct. Morphol. Kinesiol.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85125763682" "Amiri-Khorasani M.; Ferdinands R.E.D.; AmiriKhorasani A.","Amiri-Khorasani, Mohammadtaghi (36090950300); Ferdinands, René E. D. (23472673700); AmiriKhorasani, Ali (58750255200)","36090950300; 23472673700; 58750255200","Effect of eccentric and concentric overload bouts as post-activation performance enhancement on knee biomechanics of soccer heading","2024","Sport Sciences for Health","20","2","","585","592","7","0","10.1007/s11332-023-01120-5","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85178952660&doi=10.1007%2fs11332-023-01120-5&partnerID=40&md5=a0cb341e5d796312bc1aa26954c609d2","Department of Sports Biomechanics, Faculty of Physical Education and Sports Science, Shahid Bahonar University of Kerman, Kerman, Iran; Discipline of Exercise and Sport Science, Faculty of Medicine and Health, University of Sydney, Sydney, Australia","Amiri-Khorasani M., Department of Sports Biomechanics, Faculty of Physical Education and Sports Science, Shahid Bahonar University of Kerman, Kerman, Iran; Ferdinands R.E.D., Discipline of Exercise and Sport Science, Faculty of Medicine and Health, University of Sydney, Sydney, Australia; AmiriKhorasani A., Department of Sports Biomechanics, Faculty of Physical Education and Sports Science, Shahid Bahonar University of Kerman, Kerman, Iran","Purpose: The purpose of the present study is to examine the effect of different post-activation performance enhancement (PAPE) methods during warm-up on the kinematics and kinetics of the knee joint during headings motion in male soccer players. Methods: Twenty-eight semi-professional soccer players (height: mean 180.56, ± 7.23 cm; mass: mean 71.35, ± 7.82 kg; age: mean 23.45, ± 2.64 years) were tested as part of their athletic training program. Subjects were divided into four sub-groups during the familiarization session, engaging them in four different PAPE (with concentric (PAPE-C), with eccentric (PAPE-E), and with both phases (PAPE-EC)) protocols in four non-continuous days. Results: Findings showed that PAPE as compared to PAPE-C and PAPE-E, caused significant increases in knee angular velocity, knee extension power, and jump height during take-off phases of soccer heading motion. On the other hand, PAPE-E caused significant increases in time duration and deepest knee flexion during landing phase of soccer heading motion as compared to PAPE-EC and PAPE-C. Conclusion: In conclusion, different PAP protocols were associated with different positive effects for the heading motion. © The Author(s), under exclusive licence to Springer-Verlag Italia S.r.l., part of Springer Nature 2023.","ACL; Heading; Knee; PAPE; Power; Soccer; Warm-up","","Pajerska K., Zajac T., Mostowik A., Mrzyglod S., Golas A., Post activation potentiation (PAP) and its application in the development of speed and explosive strength in female soccer players: A review, J Hum Sport Exe, 16, 1, pp. 122-135, (2021); Villalon-Gasch L., Penichet-Tomas A., Sebastia-Amat S., Pueo B., Jimenez-Olmedo J.M., Postactivation performance enhancement (PAPE) increases vertical jump in elite female volleyball players, Int J Env Res Pub Health, 19, 1, (2022); Tamura A., Akasaka K., Otsudo T., Shiozawa J., Toda Y., Yamada K., Fatigue influences lower extremity angular velocities during a single-leg drop vertical jump, J Phys Ther Sci, 29, 3, pp. 498-504, (2017); Dg B., Newton R., Effect of kinetically altering a repetitionvia the use of chain resistance on velocity during the bench press, J Strength Cond Res, 23, 7, pp. 1941-1946, (2009); Robbins D., Post activation potentiation and its practical applicability: a brief review, J Strength Cond Res, 19, 2, pp. 453-458, (2005); Tillin N.A., Bishop D., Factors modulating post-activation potentiation and its effect on performance of subsequent explosive activities, Sport Med, 39, pp. 147-166, (2009); Herzog W., Schappacher G., DuVall M., Herzog J.A., Residual force enhancement following eccentric contractions: a new mechanism involving titin, Physiology (Bethesda), 31, 4, pp. 300-312, (2016); Blazevich A.J., Babault N., Post-activation potentiation versus post-activation performance enhancement in humans: historical perspective, underlying mechanisms, and current issues, Front Physiol, 10, (2019); Prieske O., Behrens M., Chaabene H., Et al., Time to differentiate postactivation “Potentiation” from “Performance enhancement” in the strength and conditioning community, Sports Med, 50, pp. 1559-1565, (2020); Finlay M.J., Bridge C.A., Greig M., Et al., Upper-body post-activation performance enhancement for athletic performance: a systematic review with meta-analysis and recommendations for future research, Sports Med, 52, pp. 847-871, (2022); Ciocca G., Tschan H., Tessitore A., Effects of Post-Activation Performance Enhancement (PAPE) induced by a plyometric protocol on deceleration performance, J Hum Kinet, 31, 80, pp. 5-16, (2021); Durovic M., Stojanovic N., Stojiljkovic N., The effects of post-activation performance enhancement and different warm-up protocols on swim start performance, Sci Rep, 12, (2022); Fu K., Chen L., Poon E.T.-C., Wang R., Li Q., Liu H., Ho I.M.K., Post-activation performance enhancement of flywheel training on lower limb explosive power performance, Front Physiol, 14, (2023); Downey R.J., Deprez D.A., Chilibeck P.D., Effects of postactivation potentiation on maximal vertical jump performance after a conditioning contraction in upper-body and lower-body muscle groups, J Strength Cond Res, 36, 1, pp. 259-261, (2022); Chen Z.R., Lo S.L., Wang M.H., Yu C.F., Peng H.T., Can different complex training improve the individual phenomenon of post-activation potentiation?, J Hum Kin, 12, 56, pp. 167-175, (2017); Gago P., Arndt A., Ekblom M., Post activation potentation of the plantarflexors: implications of knee angle variation, J Hum Kin, 57, pp. 29-38, (2017); Golas A., Wilk M., Stastny P., Maszczyk A., Pajerska K., Zajac A., Optimizing half squat post activation potential load in squat jump training for eliciting relative maximal power in ski jumpers, J Strength Cond Res, 31, pp. 3010-3017, (2017); Tsimachidis C., Patikas D., Galazoulas C., Bassa E., Kotzamandis C., The post-activation potentation effect on sprint performance after combined resistant/sprint training in junior basketball players, J Sports Sci, 31, 10, pp. 1117-1124, (2013); Feros S., Young W., Talpey S., The effects of an isometric potentiation protocol in the warm-up of elite rowers, J Aus Strength Cond Res, 19, 1, pp. 76-86, (2010); Petisco C., Ramirez-Campillo R., Hernandez D., Gonzalo-Skok O., Nakamura F.Y., Sanchez-Sanchez J., Post-activation potentiation: effects of different conditioning intensities on measures of physical fitness in male young professional soccer players, Front Psychol, 6, 10, (2019); Titton A., Franchini E., Postactivation potentiation in elite young soccer players, J Exerc Rehabil, 13, 2, pp. 153-159, (2017); Alves J.M., Rebelo A.N., Abrantes C., Sampaio J., Short-term effects of complex and contrast training in soccer players vertical jump, sprint and agility abilities, J Strength Cond Res, 24, 4, pp. 936-994, (2010); Requena V., Gapeyeva E., Garcia P., Relationship between post activation potentiation of knee extensor muscles, sprinting and vertical jumping performance in professional soccer players, J Strength Cond Res, 25, 2, pp. 367-373, (2011); Rhibi F., Ghram A., Pagaduan J., Selami M., Abderrahmann A.B., Short-term maximal performance depends on post-activation potentiation stimuli type and recovery period, J Sport Sci Health, (2017); Masel S., Maciejczyk M., Effects of post-activation performance enhancement on jump performance in elite volleyball players, Appl Sci, 12, 18, (2022); Vargas-Molina S., Salgado-Ramirez U., Chulvi-Medrano I., Carbone L., Maroto-Izquierdo S., Benitez-Porres J., Comparison of post-activation performance enhancement (PAPE) after isometric and isotonic exercise on vertical jump performance, PLoS ONE, 16, 12, (2021); Paoli A., Bianco A., Palma A., Marcolin G., Training the vertical jump to head the ball in soccer, Strength Cond J, 34, pp. 80-85, (2012); Kristensen L.B., Andersen T.B., Sorensen H., Optimizing segmental movement in the jumping header in soccer, Sports biomech, 3, 2, pp. 195-208, (2004); Noh B., Youm C.H., Lee M., Hwayoung P., Minji S., Jinhee K., Effect of knee extensor fatigue level and sex on bilateral jump-landing, BMJ Open Sport Exe Med, 6, pp. 1-7, (2020); Sinsurin K., Vachalathiti R., Jalayondeja W., Limroongreungrat W., Knee muscular control during jump landing in multidirections, Asian J Sports Med, 7, 2, (2016); Gheller R.G., Pupo J.D., Lima L.A., Moura B.M., Santos S.G., Effect of squat depth on performance and biomechanical parameters of countermovement vertical jump, Revista Brasileira de Cineantropometria e Desempenho Humano, 16, pp. 658-668, (2014); Chen L., Jiang Z., Yang C., Cheng R., Zheng S., Qian J., Effect of different landing actions on knee joint biomechanics of female college athletes: Based on opensim simulation, Front Bioeng Biotechnol, 10, (2022); Dai B., Garrett W.E., Gross M.T., Padua D.A., Queen R.M., Yu B., The effect of performance demands on lower extremity biomechanics during landing and cutting tasks, J Sport Health Sci, 8, 3, pp. 228-234, (2019); Kim S.Y., Spritzer C.E., Utturkar G.M., Toth A.P., Garrett W.E., DeFrate L.E., Knee kinematics during noncontact anterior cruciate ligament injury as determined from bone bruise location, Am J Sports Med, 43, pp. 2515-2521, (2015); Dai B., Mao D., Garrett W.E., Yu B., Anterior cruciate ligament injuries in soccer: loading mechanisms, risk factors, and prevention programs, J Sport Health Sci, 3, pp. 299-306, (2014); Amiri-Khorasani M., Calleja-Gonzalez J., Mogharabi-Manzari M., Acute effect of different combined stretching methods on acceleration and speed in soccer players, J Hum Kinet, 13, 50, pp. 179-186, (2016); Amiri-Khorasani M., Kellis E., Acute effects of different agonist and antagonist stretching arrangements on static and dynamic range of motion, Asian J Sports Med, 6, 4, pp. 1-6, (2015); Amiri-Khorasani M., Sotoodeh V., The acute effects of combined static and dynamic stretch protocols on fitness performances in soccer players, J Sports Med Phy Fit, 53, 5, pp. 559-565, (2013); Butler R.J., Russell M.E., Queen R., Effect of soccer footwear on landing mechanics, Scand J Med Sci Sports, 24, 1, pp. 129-135, (2014); Butler R.J., Willson J.D., Fowler D., Queen R.M., Gender differences in landing mechanics vary depending on the type of landing, Clin J Sport Med, 23, 1, pp. 52-57, (2013); Robertson D., Caldwell G., (2013); Robertson D.G.E., Caldwell G.E., Hamill J., Kamen G., Whittlesey S.N., Research Methods in Biomechanics, (2014); Lawton T.W., Cronin J.B., Lindsell R.P., Effect of interrepetition rest intervals on weight training repetition power output, J Strength Cond Res, 20, 1, pp. 172-176, (2006); Winter D.A., Biomechanics and motor control of human movement, (2009); Nealer A.L., Dunnick D.D., Malyszek K.K., Wong M.A., Costa P.B., Coburn J.W., Brown L.E., Influence of rest intervals after assisted sprinting on bodyweight sprint times in female collegiate soccer players, J Strength Cond Res, 31, 1, pp. 88-94, (2017); Bazett N., Jjones D.A., Neither stretching nor post activation potentiation affect maximal force and rate of force production during seven one-minute trials, J Strength Cond Res, 52, 4, pp. 168-176, (2004); Miamoto K., Fukunaga K., Effect of postactivation potentiation on the maximal voluntry isokinetic concentric torque in humans, J Strength Cond Res, 25, 1, pp. 186-192, (2011); Lees A., Nolan L., The biomechanics of soccer: A review, J Sports Sci, 16, pp. 211-234, (1988); Della Villa F., Buckthorpe M., Grassi A., Et al., Systematic video analysis of ACL injuries in professional male football (soccer): injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, British J Sports Med, 54, pp. 1423-1432, (2020); Olivares-Jabalera J., Filter-Ruger A., Dos'Santos T., Afonso J., della Villa F., Morente-Sanchez J., Soto-Hermoso V.M., Requena B., Exercise-based training strategies to reduce the incidence or mitigate the risk factors of anterior cruciate ligament injury in adult football (Soccer) Players: A systematic review, Int J Environ Res Public Health, 18, pp. 133-151, (2021)","M. Amiri-Khorasani; Department of Sports Biomechanics, Faculty of Physical Education and Sports Science, Shahid Bahonar University of Kerman, Kerman, Iran; email: amirikhorasani@uk.ac.ir","","Springer-Verlag Italia s.r.l.","18247490","","","","English","Sport Sci. Health","Article","Final","","Scopus","2-s2.0-85178952660" "Bastiaansen B.J.C.; Vegter R.J.K.; Wilmes E.; de Ruiter C.J.; Goedhart E.A.; Lemmink K.A.P.M.; Brink M.S.","Bastiaansen, Bram J. C. (57216645857); Vegter, Riemer J. K. (55345744400); Wilmes, Erik (57216648924); de Ruiter, Cornelis J. (7006550668); Goedhart, Edwin A. (55311915500); Lemmink, Koen A. P. M. (6603663944); Brink, Michel S. (24469949200)","57216645857; 55345744400; 57216648924; 7006550668; 55311915500; 6603663944; 24469949200","Biomechanical load quantification of national and regional soccer players with an inertial sensor setup during a jump, kick, and sprint task: assessment of discriminative validity","2024","Sports Engineering","27","1","17","","","","0","10.1007/s12283-024-00458-4","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85190795269&doi=10.1007%2fs12283-024-00458-4&partnerID=40&md5=2bce3e93f4952cfb109f29e7f6c2e079","Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, Antonius Deusinglaan 1 – FA23, Groningen, 3719AV, Netherlands; Amsterdam Movement Sciences, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, 1081BT, Netherlands; FIFA Medical Centre of Excellence, Royal Netherlands Football Association, Zeist, 3707HX, Netherlands","Bastiaansen B.J.C., Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, Antonius Deusinglaan 1 – FA23, Groningen, 3719AV, Netherlands; Vegter R.J.K., Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, Antonius Deusinglaan 1 – FA23, Groningen, 3719AV, Netherlands; Wilmes E., Amsterdam Movement Sciences, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, 1081BT, Netherlands; de Ruiter C.J., Amsterdam Movement Sciences, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, 1081BT, Netherlands; Goedhart E.A., FIFA Medical Centre of Excellence, Royal Netherlands Football Association, Zeist, 3707HX, Netherlands; Lemmink K.A.P.M., Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, Antonius Deusinglaan 1 – FA23, Groningen, 3719AV, Netherlands; Brink M.S., Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, Antonius Deusinglaan 1 – FA23, Groningen, 3719AV, Netherlands","Training load quantification methods may help optimize soccer performance. However, whole-body indicators potentially underestimate biomechanical load. A new inertial sensor setup allows joint-specific biomechanical load quantification. Good discriminative validity further supports the use of this method, and therefore the purpose of this study is to assess the discriminative validity of this method during soccer-specific activities. Twelve national and sixteen regional soccer players wore an inertial sensor setup and performed countermovement jumps, soccer kicks, and 30 m sprints. Between-group differences in angular acceleration-based biomechanical load indicators Knee Load, Hip Load, and performance were assessed using MANOVAs and Cohen’s effect sizes. Furthermore, relationships with performance were explored. National players showed higher Knee Load during jumping (mean difference: 0.11 A.U., ES = 0.93, p = 0.02), kicking (mean difference: 1.94 A.U., ES = 0.94; p = 0.02), and almost during sprinting (mean difference: 12.85, ES = 0.77; p = 0.05). Hip Load did not differ between groups across all tasks, although national players outperformed regional players on all tests. Significant relationships between Knee Load (rjump = 0.41, rkick = 0.65), Hip Load (rjump = 0.42), and performance were observed with 95% confidence intervals ranging from trivial to large. The results confirm discriminative validity of Knee Load for jumping and kicking, but not for sprinting and Hip Load in general. The confidence intervals of the established relationships suggest that the biomechanical loads might not entirely explain between-group differences in performance. The results can be used as reference values for biomechanical load quantification in the field. © The Author(s) 2024.","Construct validity; Field testing; Football; IMU; Kinematics; Wearable electronic devices","Biomechanics; Inertial navigation systems; Sports; Wearable sensors; Biomechanical loads; Construct validity; Electronics devices; Field testing; Hip-load; IMU; Inertial sensor; Knee loads; Performance; Wearable electronic device; Acceleration","Smith D.J., A framework for understanding the training process leading to elite performance, Sports Med, 33, 15, pp. 1103-1126, (2003); Vanrenterghem J., Et al., Training load monitoring in team sports: a novel framework separating physiological and biomechanical load-adaptation pathways, Sports Med, 47, 11, pp. 2135-2142, (2017); Akenhead R., Nassis G.P., training load and player monitoring in high-level football: current practice and perceptions, Int J Sports Physiol Perform, 11, 5, pp. 587-593, (2016); Stevens T.G.A., Et al., Measuring acceleration and deceleration in soccer-specific movements using a local position measurement (LPM) system, Int J Sports Physiol Perform, 9, 3, pp. 446-456, (2014); Boyd L.J., Ball K., Aughey R.J., The reliability of MinimaxX accelerometers for measuring physical activity in Australian football, Int J Sports Physiol Perform, 6, 3, pp. 311-321, (2011); Naito K., Fukui Y., Maruyama T., Multijoint kinetic chain analysis of knee extension during the soccer instep kick, Hum Mov Sci, 29, 2, pp. 259-276, (2010); Verheul J., Et al., Measuring biomechanical loads in team sports – from lab to field, Sci Med Football, 4, 3, pp. 246-252, (2020); Kalkhoven J.T., Et al., Training Load and Injury: causal pathways and future directions, Sports Med, 51, 6, pp. 1137-1150, (2021); Bastiaansen B.J.C., Et al., An inertial measurement unit based method to estimate Hip and Knee Joint Kinematics in Team Sport Athletes on the Field, J Visual Exp, (2020); Wilmes E., Et al., inertial sensor-based motion tracking in football with movement intensity quantification, Sensors (Basel), (2020); Zajac F.E., Gordon M.E., Determining muscle's force and action in multi-articular movement, Exerc Sport Sci Rev, 17, pp. 187-230, (1989); Pandy M.G., Zajac F.E., Optimal muscular coordination strategies for jumping, J Biomech, 24, 1, pp. 1-10, (1991); Huang L., Et al., Segment-interaction and its relevance to the control of movement during sprinting, J Biomech, 46, 12, pp. 2018-2023, (2013); Bastiaansen B.J.C., Et al., Biomechanical load quantification using a lower extremity inertial sensor setup during football specific activities, Sports Biomech, (2022); Impellizzeri F.M., Et al., The ‘training load’ construct: why it is appropriate and scientific, J Sci Med Sport, 25, 5, pp. 445-448, (2022); Wilmes E., Bastiaansen B.J., de Ruiter C.J., Vegter R.J., Brink M.S., Weersma H., Goedhart E.A., Lemmink K.A., Savelsbergh G.J., Construct Validity and Test–Retest Reliability of Hip Load Compared With Playerload During Football-Specific Running, Kicking, and Jumping Tasks, Int J Sports Physiol Perform, 18, 1, pp. 3-10, (2023); Haugen T.A., Tonnessen E., Seiler S., Anaerobic performance testing of professional soccer players 1995–2010, Int J Sports Physiol Perform, 8, 2, pp. 148-156, (2013); Boyne M., Et al., 2021 It's not all about power: a systematic review and meta-analysis comparing sex-based differences in kicking biomechanics in soccer, Spor Biomech, (2021); Altmann S., Et al., Validity and reliability of speed tests used in soccer: a systematic review, PLoS ONE, 14, 8, (2019); Impellizzeri F.M., Marcora S.M., Test validation in sport physiology: lessons learned from clinimetrics, Int J Sports Physiol Perform, 4, 2, pp. 269-277, (2009); de Ruiter C.J., van Dieen J.H., Stride and step length obtained with inertial measurement units during maximal sprint acceleration, Sports, 7, 9, (2019); Frencken W.G., Lemmink K.A., Delleman N.J., Soccer-specific accuracy and validity of the local position measurement (LPM) system, J Sci Med Sport, 13, 6, pp. 641-645, (2010); Markovic G., Et al., Reliability and factorial validity of squat and countermovement jump tests, J Strength Cond Res, 18, 3, pp. 551-555, (2004); Vanezis A., Lees A., A biomechanical analysis of good and poor performers of the vertical jump, Ergonomics, 48, 11-14, pp. 1594-1603, (2005); Markovic G., Dizdar D., Jaric S., Evaluation of tests of maximum kicking performance, J Sports Med Phys Fitness, 46, 2, pp. 215-220, (2006); Sinclair J., Et al., Three-dimensional kinematic correlates of ball velocity during maximal instep soccer kicking in males, Eur J Sport Sci, 14, 8, pp. 799-805, (2014); Madgwick S.O.H., Harrison A.J.L., Vaidyanathan R., Estimation of IMU and MARG orientation using a gradient descent algorithm, IEEE International Conference on Rehabilitation Robotics, Zurich, Switzerland, pp. 1-7, (2011); Bosco C., Luhtanen P., Komi P.V., A simple method for measurement of mechanical power in jumping, Eur J Appl Physiol, 50, 2, pp. 273-282, (1983); Rantalainen T., Finni T., Walker S., Jump height from inertial recordings: a tutorial for a sports scientist, Scand J Med Sci Sports, 30, 1, pp. 38-45, (2020); Hopkins W.G., Et al., Progressive statistics for studies in sports medicine and exercise science, Med Sci Sports Exerc, 41, 1, pp. 3-13, (2009); Dowling J.J., Vamos L., Identification of kinetic and temporal factors related to vertical jump performance, J Appl Biomech, 9, 2, pp. 95-110, (1993); Lees A., Vanrenterghem J., De Clercq D., The maximal and submaximal vertical jump: implications for strength and conditioning, J Strength Cond Res, 18, 4, pp. 787-791, (2004); Bobbert M.F., van Soest A.J., Why do people jump the way they do?, Exerc Sport Sci Rev, 29, 3, pp. 95-102, (2001); Dorge H.C., Et al., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, J Sports Sci, 20, 4, pp. 293-299, (2002); Morin J.B., Et al., Mechanical determinants of 100-m sprint running performance, Eur J Appl Physiol, 112, 11, pp. 3921-3930, (2012); Dorn T.W., Schache A.G., Pandy M.G., Muscular strategy shift in human running: dependence of running speed on hip and ankle muscle performance, J Exp Biol, 215, pp. 1944-1956, (2012); Steijlen A., Et al., Smart sensor tights: movement tracking of the lower limbs in football, Wear Technol, 2, (2021)","B.J.C. Bastiaansen; Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, Groningen, Antonius Deusinglaan 1 – FA23, 3719AV, Netherlands; email: b.j.c.bastiaansen@umcg.nl","","Springer Science and Business Media Deutschland GmbH","13697072","","","","English","Sports Eng.","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85190795269" "Ericksen H.M.; Vogelpohl R.E.","Ericksen, Hayley M. (55164889700); Vogelpohl, Rachele E. (36244960300)","55164889700; 36244960300","Lower extremity biomechanical differences between female dancers and soccer players","2020","International Journal of Athletic Therapy and Training","25","5","","254","257","3","1","10.1123/ijatt.2019-0087","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091073677&doi=10.1123%2fijatt.2019-0087&partnerID=40&md5=0a1cb7da84c8257ab60de1c96fa4408d","University of Wisconsin-Milwaukee, Milwaukee, WI, United States; Northern Kentucky University, Highland Heights, KY, United States","Ericksen H.M., University of Wisconsin-Milwaukee, Milwaukee, WI, United States; Vogelpohl R.E., Northern Kentucky University, Highland Heights, KY, United States","Anterior cruciate ligament (ACL) injury in female athletes is common. Team sport athletes experience more ACL injuries than ballet and modern dancers. Examining biomechanical differences between these two groups may help to explain the discrepancy in ACL injury rates. The purpose of this study was to examine lower extremity kinematic differences between collegiate dancers and National Collegiate Athletic Association Division I soccer athletes during a rebound jump-landing task. Peak hip, knee, and ankle kinematics were collected during a jump-landing task. Results showed more knee flexion and less ankle eversion in the dancers compared to the soccer athletes. Differences in training and strategies used during landing may explain the kinematic differences between groups. © 2020 Human Kinetics, Inc.","Biomechanics; Clinical evaluation; Sports medicine","","Hootman JM, Dick R, Agel J., Epidemiology of collegiate injuries for 15 sports: summary and recommendations for injury prevention initiatives, J Athl Train, 42, 2, pp. 311-319, (2007); Boden B, Sheehan F, Torg J, Hewett T., Non-contact ACL Injuries: mechanisms and risk factors, J Am Acad Orthop Surg, 18, 9, pp. 520-527, (2010); Renstrom P, Ljungqvist A, Arendt E, Et al., Non-contact ACL injuries in female athletes: an International Olympic Committee current concepts statement, Br J Sports Med, 42, 6, pp. 394-412, (2008); Hewett TE, Ford KR, Myer GD., Anterior cruciate ligament injuries in female athletes: part 2, a meta-analysis of neuromuscular inter-ventions aimed at injury prevention, Am J Sports Med, 34, 3, pp. 490-498, (2006); Boden BP, Dean GS, Feagin JA, Garrett WE, Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Agel J, Rockwood T, Klossner D., Collegiate ACL injury rates across 15 sports: National Collegiate Athletic Association injury surveil-lance system data update (2004-2005 through 2012-2013), Clin J Sports Med, 26, 6, pp. 518-523, (2016); Hewett TE, Myer GD, Ford KR, Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Orishimo K, Kremenic I, Pappas E, Hagins M, Liederbach M., Comparison of landing biomechanics between male and female professional dancers, Am J Sports Med, 37, 11, pp. 2187-2193, (2009); Orishimo K, Liederbach M, Kremenic I, Hagins M, Pappas E., Comparison of landing biomechanics between male and female dancers and athletes, part 1: influence of sex on risk of anterior cruciate ligament injury, Am J Sports Med, 42, 5, pp. 1082-1088, (2014); Liederbach M, Dilgen F, Rose D., Incidence of anterior cruciate ligament injuries among elite ballet and modern dancers: a 5-year prospective study, Am J Sports Med, 36, 9, pp. 1779-1788, (2008); Li S, Chow D., Multi-objective analysis for assessing simultaneous changes in regional spinal curvatures under backpack carriage in young adults, Ergonomics, 59, 11, pp. 1494-1504, (2016); Padua D, Marshall S, Boling M, Thigpen C, Garrett WJ, Beutler A., The Landing Error Scoring System (LESS) is a valid and reliable clinical assessment tool of jump-landing biomechanics: THE JUMP-ACL study, Am J Sports Med, 37, 10, pp. 1996-2002, (2009); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (1988); Hansberger B, Acocelle S, Slater L, Hart J, Ambegaonkar J., Peak lower extremity landing kinematics in dancers and nondancers, J Athl Train, 53, 4, pp. 379-385, (2018); Ford K, Myer G, Smith R, Vianello R, Seiwert S, Hewett T., A comparison of dynamic coronal plane excursion between matched male and female athletes when performing single leg landings, Clin Biomech, 21, 1, pp. 33-40, (2006); Turner C, Crow S, Crowther T, Et al., Preventing non-contact ACL injuries in female athletes: what can we learn from dancers?, Phys Ther Sport, 31, pp. 1-8, (2017); Dunning J., But First a School: The First 50 Years of the School of American Ballet, (1985)","H.M. Ericksen; University of Wisconsin-Milwaukee, Milwaukee, United States; email: erickseh@uwm.edu","","Human Kinetics Publishers Inc.","21577285","","","","English","Inter. J","Article","Final","","Scopus","2-s2.0-85091073677" "De la Fuente C.; Silvestre R.; Yañez R.; Roby M.; Soldán M.; Ferrada W.; Carpes F.P.","De la Fuente, Carlos (56289782900); Silvestre, Rony (51664173500); Yañez, Roberto (57214562238); Roby, Matias (57715331200); Soldán, Macarena (57716366500); Ferrada, Wilson (57205353984); Carpes, Felipe P. (16238221400)","56289782900; 51664173500; 57214562238; 57715331200; 57716366500; 57205353984; 16238221400","Preseason multiple biomechanics testing and dimension reduction for injury risk surveillance in elite female soccer athletes: short-communication","2023","Science and Medicine in Football","7","2","","183","188","5","1","10.1080/24733938.2022.2075558","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130906100&doi=10.1080%2f24733938.2022.2075558&partnerID=40&md5=12bfdd951b890bb6ab2a1071204d9028","Unidad de Biomecánica, Centro de Innovación, Clínica MEDS, Santiago, Chile; Applied Neuromechanics Research Group, Universidade Federal Do Pampa, Uruguaiana, Brazil; Carrera de Kinesiología, Departamento de Cs. de la Salud, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Clínica MEDS, Santiago, Traumatología, Chile; Medical Department, Club Social y Deportivo Colo-Colo, Santiago, Chile","De la Fuente C., Unidad de Biomecánica, Centro de Innovación, Clínica MEDS, Santiago, Chile, Applied Neuromechanics Research Group, Universidade Federal Do Pampa, Uruguaiana, Brazil, Carrera de Kinesiología, Departamento de Cs. de la Salud, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Silvestre R., Unidad de Biomecánica, Centro de Innovación, Clínica MEDS, Santiago, Chile; Yañez R., Unidad de Biomecánica, Centro de Innovación, Clínica MEDS, Santiago, Chile, Clínica MEDS, Santiago, Traumatología, Chile, Medical Department, Club Social y Deportivo Colo-Colo, Santiago, Chile; Roby M., Unidad de Biomecánica, Centro de Innovación, Clínica MEDS, Santiago, Chile, Clínica MEDS, Santiago, Traumatología, Chile; Soldán M., Unidad de Biomecánica, Centro de Innovación, Clínica MEDS, Santiago, Chile; Ferrada W., Medical Department, Club Social y Deportivo Colo-Colo, Santiago, Chile; Carpes F.P., Applied Neuromechanics Research Group, Universidade Federal Do Pampa, Uruguaiana, Brazil","Background: Injury risk is regularly assessed during the preseason in susceptible populations like female soccer players. However, multiple outcomes (high-dimensional dataset) derived from multiple testing may make pattern recognition difficult. Thus, dimension reduction and clustering may be useful for improving injury surveillance when results of multiple assessment tools are available. Aim: To determine the influence of dimension reduction for pattern recognition followed by clustering on multiple biomechanical injury markers in elite female soccer players during preseason. Methdology: We introduced the use of dimension reduction through linear principal component analysis (PCA), non-linear kernel principal component analysis (k-PCA), t-distributed stochastic neighbor embedding (t-sne), and uniform manifold approximation and projection (umap) for injury markers via grid search. Muscle strength, muscle function, jump technique and power, balance, muscle stiffness, exercise tolerance, and running performance were assessed in an elite female soccer team (n = 21) prior to the competitive season. Results: As a result, umap facilitated the injury pattern recognition compared to PCA, k-PCA, and t-sne. One of the three patterns was related to a team subgroup with acceptable muscle conditions. In contrast, the other two patterns showed higher injury risk profiles. For our dataset, umap improved injury surveillance through multiple testing characteristics. Conclusion: Dimension reduction and clustering techniques present as useful strategies to analyze subgroups of female soccer players who have different risk profiles for injury. © 2022 Informa UK Limited, trading as Taylor & Francis Group.","biomechanics; football; machine learning; non-linear reduction; Sports","Athletes; Athletic Injuries; Biomechanical Phenomena; Female; Humans; Muscle Strength; Soccer; athlete; biomechanics; female; human; injury; muscle strength; physiology; soccer; sport injury","Ambegaonkar J.P., Cortes N., Caswell S.V., Ambegaonkar G.P., Wyon M., Lower extremity hypermobility, but not core muscle endurance influences balance in female collegiate dancers, Int J Sports Phys Ther, 11, pp. 220-229, (2016); Carey D.L., Crow J., Ong K.-L., Blanch P., Morris M.E., Dascombe B.J., Crossley K.M., Optimizing preseason training loads in Australian football, Int J Sports Physiol Perform, 13, pp. 194-199, (2018); Crossley K.M., Patterson B.E., Culvenor A.G., Bruder A.M., Mosler A.B., Mentiplay B.F., Making football safer for women: a systematic review and meta-analysis of injury prevention programmes in 11 773 female football (soccer) players, Br J Sports Med, 54, pp. 1089-1098, (2020); Dewitz H., Yildirim B., Klein P., Biomechanical screening for injury prevention : the importance of 3D-motion analysis in high performance sports, Unfallchirurg, 121, pp. 455-462, (2018); Ekstrand J., Spreco A., Windt J., Khan K.M., Are elite soccer teams’ preseason training sessions associated with fewer in-season injuries? A 15-year analysis from the union of European Football Associations (UEFA) elite club injury study, Am J Sports Med, 48, 3, pp. 723-729, (2020); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.G., van den Bogert A.J., Paterno M.V., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Johnstone I.M., Titterington D.M., Statistical challenges of high-dimensional data, Philos Trans A Math Phys Eng Sci, 367, pp. 4237-4253, (2009); Jolliffe I.T., Cadima J., Principal component analysis: a review and recent developments, Philos Trans A Math Phys Eng Sci, 374, (2016); Manzi V., Bovenzi A., Franco Impellizzeri M., Carminati I., Castagna C., Individual training-load and aerobic-fitness variables in premiership soccer players during the precompetitive season, J Strength Cond Res, 27, pp. 631-636, (2013); McInnes L., Healy J., Melville J., UMAP: uniform manifold approximation and projection for dimension reduction, arXiv, 1802, (2018); Meerits T., Be A., Paasuke M., Ereline J., Cicchella A., Gapeyeva H., Acute effect of static and dynamic stretching on tone and elasticity of hamstring muscle and on vertical jump performance in track-and-field athletes, Acta Kinesiologiae Universitatis Tartuensis, 20, pp. 48-59, (2014); Mugele H., Plummer A., Steffen K., Stoll J., Mayer F., Muller J., General versus sports-specific injury prevention programs in athletes: a systematic review on the effect on injury rates, PLoS One, 13, (2018); Opar D.A., Williams M.D., Shield A.J., Hamstring strain injuries: factors that lead to injury and re-injury, Sports Med, 42, pp. 209-226, (2012); Padua D.A., Marshall S.W., Boling M.C., Thigpen C.A., Garrett W.E., Beutler A.I., The landing error scoring system (LESS) is a valid and reliable clinical assessment tool of jump-landing biomechanics: the JUMP-ACL study, Am J Sports Med, 37, 10, pp. 1996-2002, (2009); Ruddy J.D., Cormack S.J., Whiteley R., Williams M.D., Timmins R.G., Opar D.A., Modeling the risk of team sport injuries: a narrative review of different statistical approaches, Front Physiol, 10, (2019); Sivarajah S., Dimensionality reduction for data visualization: PCA vs TSNE vs UMAP vs LDA, Medium, (2020); Wikstrom E.A., Tillman M.D., Smith A.N., Borsa P.A., A new force-plate technology measure of dynamic postural stability: the dynamic postural stability index, J Athl Train, 40, pp. 305-309, (2005); Yang J., Jin Z., Yang J., Non-linear techniques for dimension reduction, Encyclopedia of biometrics, pp. 1003-1007, (2009)","F.P. Carpes; Applied Neuromechanics Research Group, Universidade Federal do Pampa, Uruguaiana, 97508000, Brazil; email: carpes@unipampa.edu.br","","Taylor and Francis Ltd.","24733938","","","35522903","English","Sci. Med. Footb.","Article","Final","","Scopus","2-s2.0-85130906100" "Arundale A.J.H.","Arundale, Amelia J.H. (56529660500)","56529660500","Keeping athletes on the field: Preventing primary and secondary ACL injuries","2018","British Journal of Sports Medicine","52","9","","618","619","1","1","10.1136/bjsports-2017-098214","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046371695&doi=10.1136%2fbjsports-2017-098214&partnerID=40&md5=1da3bfe88221e6e1a79c32d2b898a82f","Biomechanics and Movement Science Program, University of Delaware, Newark, 19711, DE, United States","Arundale A.J.H., Biomechanics and Movement Science Program, University of Delaware, Newark, 19711, DE, United States","[No abstract available]","injury prevention; knee ACL; soccer; sport","Anterior Cruciate Ligament Injuries; Athletes; Athletic Injuries; Biomechanical Phenomena; Female; Humans; Soccer; anterior cruciate ligament injury; athlete; biomechanics; female; human; injuries; soccer; sport injury","Griffin L.Y., Albohm M.J., Arendt E.A., Et al., Understanding and preventing noncontact anterior cruciate ligament injuries: A review of the hunt valley II meeting, January 2005, Am J Sports Med, 34, pp. 1512-1532, (2006); Bizzini M., Dvorak J., FIFA 11+: An effective programme to prevent football injuries in various player groups worldwide-a narrative review, Br J Sports Med, 49, pp. 577-579, (2015); White K., Di Stasi S.L., Smith A.H., Et al., Anterior cruciate ligament-specialized postoperative return-to-sports (ACL-SPORTS) training: A randomized control trial, BMC Musculoskelet Disord, 14, (2013); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Ardern C.L., Glasgow P., Schneiders A., Et al., 2016 consensus statement on return to sport from the first world congress in sports physical therapy, bern, Br J Sports Med, 2016, pp. 853-864, (2016); Grindem H., Snyder-Mackler L., Moksnes H., Et al., Simple decision rules can reduce reinjury risk by 84% after ACL reconstruction: The Delaware-Oslo ACL cohort study, Br J Sports Med, 50, pp. 804-808, (2016)","A.J.H. Arundale; Biomechanics and Movement Science Program, University of Delaware, Newark, 19711, United States; email: arundale@udel.edu","","BMJ Publishing Group","03063674","","BJSMD","29618458","English","Br. J. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85046371695" "Le Flao E.; Pichardo A.W.; Ganpatt S.; Oranchuk D.J.","Le Flao, Enora (56258451300); Pichardo, Andrew W. (57202867221); Ganpatt, Sherwin (57404350200); Oranchuk, Dustin J. (57203127249)","56258451300; 57202867221; 57404350200; 57203127249","An Accessible, 16-Week Neck Strength Training Program Improves Head Kinematics Following Chest Perturbation in Young Soccer Athletes","2021","Journal of sport rehabilitation","30","8","","1158","1165","7","1","10.1123/jsr.2020-0537","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122487992&doi=10.1123%2fjsr.2020-0537&partnerID=40&md5=efb681024d227e2e1ebaeafc5e8142aa","","","CONTEXT: Neck size and strength may be associated with head kinematics and concussion risks. However, there is a paucity of research examining neck strengthening and head kinematics in youths. In addition, neck training is likely lacking in youth sport due to a perceived inadequacy of equipment or time. OBJECTIVE: Examine neck training effects with minimal equipment on neck strength and head kinematics following chest perturbations in youth athletes. DESIGN: Single-group, pretest-posttest case series. SETTING: Athlete training center. PARTICIPANTS: Twenty-five (14 men and 11 women) youth soccer athletes (9.8 [1.5] y). INTERVENTION: Sixteen weeks of twice-weekly neck-focused resistance training utilizing bands, body weight, and manual resistance. MAIN OUTCOME MEASURES: Head kinematics (angular range of motion, peak anterior-posterior linear acceleration, and peak resultant linear acceleration) were measured by an inertial motion unit fixed to the apex of the head during torso perturbations. Neck-flexion and extension strength were assessed using weights placed on the forehead and a plate-loaded neck harness, respectively. Neck length and circumference were measured via measuring tape. RESULTS: Neck extension (increase in median values for all: +4.5 kg, +100%, P < .001; females: +4.5 kg, +100%, P = .002; males: +2.2 kg, +36%, P = .003) and flexion (all: +3.6 kg, +114%, P < .001; females: +3.6 kg, +114%, P = .004; males: +3.6 kg, +114%, P = .001) strength increased following the intervention. Men and women both experienced reduced perturbation-induced head pitch (all: -84%, P < .001). However, peak resultant linear acceleration decreased in the female (-53%, P = .004), but not male (-31%, P = 1.0) subgroup. Preintervention peak resultant linear acceleration and extension strength (R2 = .21, P = .033) were the closest-to-significance associations between head kinematics and strength. CONCLUSIONS: Young athletes can improve neck strength and reduce perturbation-induced head kinematics following a 16-week neck strengthening program. However, further research is needed to determine the effect of improved strength and head stabilization on concussion injury rates.","concussion; quasi-isometric; resistance training; youth","Adolescent; Athletes; Biomechanical Phenomena; Female; Head; Humans; Male; Muscle Strength; Neck Muscles; Resistance Training; Soccer; adolescent; athlete; biomechanics; female; head; human; male; muscle strength; neck muscle; resistance training; soccer","","","","NLM (Medline)","15433072","","","34330102","English","J Sport Rehabil","Article","Final","","Scopus","2-s2.0-85122487992" "Grisales M.P.; Espinosa K.; Alzate N.O.","Grisales, Maria P. (57921615000); Espinosa, Katalina (57921476400); Alzate, Nestor O. (57921640000)","57921615000; 57921476400; 57921640000","Prosthetic rehabilitation in a bilateral lower limb pediatric amputee: Case report","2022","Journal of Pediatric Rehabilitation Medicine","15","3","","539","543","4","1","10.3233/PRM-210005","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85139571007&doi=10.3233%2fPRM-210005&partnerID=40&md5=b641849c43a878694755d36d0e4f58b6","Physical Medicine and Rehabilitation Department, Universidad Del Valle, Valle del Cauca, Cali, Colombia","Grisales M.P., Physical Medicine and Rehabilitation Department, Universidad Del Valle, Valle del Cauca, Cali, Colombia; Espinosa K., Physical Medicine and Rehabilitation Department, Universidad Del Valle, Valle del Cauca, Cali, Colombia; Alzate N.O., Physical Medicine and Rehabilitation Department, Universidad Del Valle, Valle del Cauca, Cali, Colombia","CASE DESCRIPTION: A 2-month-old child required a bilateral limb amputation, right transtibial, and left transfemoral after a deep burn compromising one-third of the body surface area. Traumatic amputations of lower limbs at such an early age are uncommon and underreported in the literature, especially in middle-income countries. OBJECTIVE: To describe the long-term follow-up of the prosthetization process after traumatic bilateral amputation of a 2-month-old patient. TREATMENT: The process started with compensatory prostheses for independent sitting, followed by exoskeletal devices with SACH feet, and finally introduced dynamic feet and knee to achieve progressively independent gait. OUTCOMES: The patient achieved functionality, autonomy, and social interaction for his age. The habilitation process continues to improve his independent gait and support upcoming life changes. CONCLUSION: Through a multidisciplinary approach, family support, and timely changes of device components according to the child's development, this patient has been able to achieve a normal life. © 2022-IOS Press. All rights reserved.","Amputees; artificial limbs; case report; disabled children; lower limb prosthesis","Amputation; Amputation, Traumatic; Amputees; Artificial Limbs; Biomechanical Phenomena; Child; Gait; Humans; Infant; Lower Extremity; neoprene; silicone; amputee; Article; authorization; body surface; burn; case report; child; child hospitalization; clinical article; daily life activity; disease course; family; follow up; gait; health care access; human; integration; leg amputation; legal guardian; male; multidisciplinary team; occupational therapy; orthotist; outpatient; patient autonomy; pediatric patient; pediatric rehabilitation; physiological adaptation; physiotherapy; play; prosthetic procedure; prosthetist; range of motion; school child; sensation; sitting; skin flap; skin graft; skin scar; soccer; social interaction; support group; traumatic amputation; treatment outcome; amputation; biomechanics; infant; limb prosthesis; lower limb; rehabilitation; surgery; traumatic amputation","Mc Larney M., Pezzin L.E., McGinley E.L., Prosser L., Dilling-Ham T.R., The prevalence of lower limb loss in children and associated costs of prosthetic devices: A national study of commercial insurance claims, Prosthet Orthot Int., 45, 2, pp. 115-122, (2021); Borne A., Porter A., Recicar J., Maxson T., Montgomery C., Pediatric traumatic amputations in the united states: A 5-year review, J Pediatr Orthop., 37, 2, pp. e104-e107, (2017); Yigiter K., Ulger O., Sener G., Akdogan S., Erbahceci F., Bayar K., Demography and function of children with limb loss, Prosthet Orthot Int., 29, 2, pp. 131-138, (2005); Griffet J., Amputation and prosthesis fitting in paedi-atric patients, Orthop Traumatol Surg Res., 102, 1, pp. S161-S175, (2016); Boonstra A.M., Rijnders L.J.M., Groothoff J.W., Eisma W.H., Children with congenital deficiencies or acquired amputations of the lower limbs, Prosthet Orthot Int., 24, 1, pp. 19-27, (2000); Le J.T., Scott-Wyard P.R., Pediatric limb differences and amputations, Phys Med Rehabil Clin N Am., 26, 1, pp. 95-108, (2015); Bowen R.E., Otsuka N.Y., The Child withalimb deficiency, Lovell and Winter's Pedi-atric Orthopaedics, pp. 1526-1595, (2014); Li Q., Wang L.-F., Chen Q., Wang S.-J., Li F., Ba T., Amputations in the burn unit: A retrospective analysis of 82 patients across 12 years, Burns., 43, 7, pp. 1449-1454, (2017); Bartley C.N., Atwell K., Purcell L., Cairns B., Charles A., Amputation following burn injury, J Burn Care Res., 40, 4, pp. 430-436, (2019); Kennedy P.J., Young W.M., Deva A.K., Haertsch P.A., Burns and amputations: A 24-Year experience, J Burn Care Res., 27, 2, pp. 183-188, (2006); Wilk B., Karol L., Halliday S., Cummings D., Haideri N., Stephenson J., Transistion to an articulating knee prosthesis in pediatric amputees, JPO Journal of Prosthetics and Orthotics., 11, 3, pp. 69-74, (1999); Geil M.D., Coulter-O'Berry C., Temporal and spatial parameters of crawling in children with limb loss: Implications on prosthetic knee prescription, JPO Journal of Prosthetics and Orthotics., 22, 1, pp. 21-25, (2010); Geil M., Coulter C., Analysis of locomotor adaptations in young children with limb loss in an early prosthetic knee prescription protocol, Prosthet Orthot Int., 38, 1, pp. 54-61, (2014); Geil M.D., Safaeepour Z., Giavedoni B., Coulter C.P., Walking kinematics in young children with limb loss using early versus traditional prosthetic knee prescription protocols, PLo S One., 15, 4, (2020); Burns-Fact Sheet; Del Rosario Aldana M.C., Castellanos L.F., Osorio L.Q., Navar-Rete N., Las quemaduras en la población pediátrica colom-biana: Del desconocimiento hacia la prevención, Pediatŕia., 49, 4, pp. 128-137, (2016); Bogotá: Minsiterio de Salud y Protección Social, (2020); La Discapacidad Y La Inclusión Social: Una Prioridad Para Todos Los Gobernantes Locales Colombianos, Bogotá: Fundación Saldarriaga Concha, (2019)","M.P. Grisales; Calle 5 #36-08 Hospital Universitario Del Valle, Depto Medicina Física y Rehabilitación, Cali, Colombia; email: grisales.maria@correounivalle.edu.co","","IOS Press BV","18745393","","","35912758","English","J. Pediatr. Rehabit. Med.","Article","Final","","Scopus","2-s2.0-85139571007" "Sigurðsson H.B.; Briem K.; Silbernagel K.G.; Snyder-Mackler L.","Sigurðsson, Haraldur B. (57526782600); Briem, Kristín (16051954700); Silbernagel, Karin Grävare (8103125200); Snyder-Mackler, Lynn (7006751957)","57526782600; 16051954700; 8103125200; 7006751957","Don’t Peak Too Early: Evidence for an ACL Injury Prevention Mechanism of the 11+ Program","2022","International Journal of Sports Physical Therapy","17","5","","823","831","8","1","10.26603/001c.36524","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85135556555&doi=10.26603%2f001c.36524&partnerID=40&md5=b7ed62089b4c4f689ae25e23c94d8727","Physical Therapy, University of Iceland, Iceland; Physical Therapy, University of Delaware, United States","Sigurðsson H.B., Physical Therapy, University of Iceland, Iceland; Briem K., Physical Therapy, University of Iceland, Iceland; Silbernagel K.G., Physical Therapy, University of Delaware, United States; Snyder-Mackler L., Physical Therapy, University of Delaware, United States","Background The 11+ program prevents anterior cruciate ligament (ACL) injuries in athletes through unknown mechanisms. Purpose The aim of the current study was to evaluate the effects of The 11+ intervention program, performed by female soccer players during a single season, on the frequency of Early Peaks during athletic tasks. Methods Three teams (69 players) of collegiate female soccer athletes (Divisions I and II) were recruited. Two teams (49 players) volunteered to perform The 11+ three times per week for one season (~22 weeks plus three weeks pre-season), and one team (20 players) served as controls. The athletes performed three repetitions of a cutting maneuver, side shuffle direction change, and forwards to backwards running direction change before and after the competitive season and were recorded using marker-based 3D motion capture. Knee valgus moment time series were calculated for each repetition with inverse kinematics and classified as either “Very Early Peak”, “Early Peak” or “other” using cluster analysis. The classification was based timing of the peak relative to the timing of ACL injuries. The effect of the intervention on the frequency of Very Early Peaks and Early Peaks was evaluated with a mixed Poisson regression controlling for the movement task and pre-season frequency. Results The 11+ intervention reduced the frequency of Early Peak knee valgus moment in one intervention team (coefficient =-1.16, p = 0.004), but not the other (coefficient =-0.01, p = 0.977). No effect was observed on the frequency of Very Early Peak knee valgus moment. Conclusions Reduced frequency of knee valgus moment Early Peak during athletic tasks may explain the mechanism by which The 11+ program decreases risk of ACL injury. Prospective studies with a much larger sample size are required to establish a link between Early Peak knee valgus moments and risk of ACL injury. Level of evidence 2b. © 2022, North American Sports Medicine Institute. All rights reserved.","biomechanics; Cluster analysis; injury prevention; knee; soccer","","Kester BS, Behery OA, Minhas SV, Hsu WK., Athletic performance and career longevity following anterior cruciate ligament reconstruction in the National Basketball Association, Knee Surg Sports Traumatol Arthrosc, 25, 10, pp. 3031-3037, (2017); Xie X, Xiao Z, Li Q, Et al., Increased incidence of osteoarthritis of knee joint after ACL reconstruction with bone–patellar tendon–bone autografts than hamstring autografts: a meta-analysis of 1,443 patients at a minimum of 5 years, Eur J Orthop Surg Traumatol, 25, 1, pp. 149-159, (2015); Mather RC, Koenig L, Kocher MS, Et al., Societal and economic impact of anterior cruciate ligament tears, J Bone Jt Surg Am, 95, 19, pp. 1751-1759, (2013); Webster KE, Hewett TE., A meta-analysis of meta-analyses of anterior cruciate ligament injury reduction training programs, J Orthop Res, (2018); Arundale AJH, Bizzini M, Giordano A, Et al., Exercise-based knee and anterior cruciate ligament injury prevention, J Orthop Sports Phys Ther, 48, 9, pp. A1-A25, (2018); Silvers-Granelli HJ, Bizzini M, Arundale A, Mandelbaum BR, Snyder-Mackler L., Does the fifa 11+ injury prevention program reduce the incidence of acl injury in male soccer players?, Clin Orthop, 475, 10, pp. 2447-2455, (2017); Dix C, Logerstedt D, Arundale A, Snyder-Mackler L., Perceived barriers to implementation of injury prevention programs among collegiate women’s soccer coaches, J Sci Med Sport, 24, 4, pp. 352-356, (2021); Donaldson A, Callaghan A, Bizzini M, Jowett A, Keyzer P, Nicholson M., A concept mapping approach to identifying the barriers to implementing an evidence-based sports injury prevention programme, Inj Prev, 25, 4, pp. 244-251, (2019); Judge LW, Petersen JC, Hoover DL, Et al., A fraction of recommended practices: Implementation of the fifa 11+ in ncaa soccer programs, Med Lith, 56, 9, pp. 1-9, (2020); Bates NA, Schilaty ND, Nagelli CV, Krych AJ, Hewett TE., Novel mechanical impact simulator designed to generate clinically relevant anterior cruciate ligament ruptures, Clin Biomech, 44, pp. 36-44, (2017); Koga H, Nakamae A, Shima Y, Et al., Mechanisms for noncontact anterior cruciate ligament injuries: Knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, 11, pp. 2218-2225, (2010); Koga H, Nakamae A, Shima Y, Bahr R, Krosshaug T., Hip and ankle kinematics in noncontact anterior cruciate ligament injury situations: video analysis using model-based image matching, Am J Sports Med, 46, 2, pp. 333-340, (2018); Krosshaug T, Slauterbeck JR, Engebretsen L, Bahr R., Biomechanical analysis of anterior cruciate ligament injury mechanisms: three-dimensional motion reconstruction from video sequences, Scand J Med Sci Sports, 17, 5, pp. 508-519, (2007); Della Villa F, Buckthorpe M, Grassi A, Et al., Systematic video analysis of ACL injuries in professional male football (soccer): injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, Br J Sports Med, 54, 23, pp. 1423-1432, (2020); Lucarno S, Zago M, Buckthorpe M, Et al., Systematic video analysis of anterior cruciate ligament injuries in professional female soccer players, Am J Sports Med, 49, 7, pp. 1794-1802, (2021); Hewett TE, Myer GD, Ford KR, Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Leppanen M, Pasanen K, Kujala UM, Et al., Stiff landings are associated with increased acl injury risk in young female basketball and floorball players, Am J Sports Med, 45, 2, pp. 386-393, (2017); Krosshaug T, Steffen K, Kristianslund E, Et al., The vertical drop jump is a poor screening test for acl injuries in female elite soccer and handball players: a prospective cohort study of 710 athletes, Am J Sports Med, 44, 4, pp. 874-883, (2016); Nilstad A, Petushek E, Mok KM, Bahr R, Krosshaug T., Kiss goodbye to the “kissing knees”: no association between frontal plane inward knee motion and risk of future non-contact ACL injury in elite female athletes, Sports Biomech, pp. 1-15, (2021); Bates NA, Schilaty ND, Nagelli CV, Krych AJ, Hewett TE., Validation of noncontact anterior cruciate ligament tears produced by a mechanical impact simulator against the clinical presentation of injury, Am J Sports Med, (2018); Sigurdsson HB, Briem K., Cluster analysis successfully identifies clinically meaningful knee valgus moment patterns: frequency of early peaks reflects sex-specific ACL injury incidence, J Exp Orthop, 6, 1, (2019); Sigurdsson HB, Karlsson J, Snyder-Mackler L, Briem K., Kinematics observed during ACL injury are associated with large early peak knee abduction moments during a change of direction task in healthy adolescents, J Orthop Res, (2020); Montalvo AM, Schneider DK, Silva PL, Et al., What’s my risk of sustaining an ACL injury while playing football (soccer)?” A systematic review with meta-analysis, Br J Sports Med, (2018); Soligard T, Myklebust G, Steffen K, Et al., Comprehensive warm-up programme to prevent injuries in young female footballers: cluster randomised controlled trial, BMJ, 337, (2008); Dix C, Arundale A, Silvers-Granelli H, Marmon A, Zarzycki R, Snyder-Mackler L., Biomechanical measures during two sport-specific tasks differentiate between soccer players who go on to anterior cruciate ligament injury and those who do not: a prospective cohort analysis, Int J Sports Phys Ther, 15, 6, pp. 928-935, (2020); Kristianslund E, Faul O, Bahr R, Myklebust G, Krosshaug T., Sidestep cutting technique and knee abduction loading: Implications for ACL prevention exercises, Br J Sports Med, 48, 9, pp. 779-783, (2014); Murtagh F, Legendre P., Ward’s hierarchical agglomerative clustering method: which algorithms implement Ward’s criterion?, J Classif, 31, 3, pp. 274-295, (2014); Hubert LJ, Levin JR., A general statistical framework for assessing categorical clustering in free recall, Psychol Bull, 83, 6, pp. 1072-1080, (1976); Bates D, Machler M, Bolker BM, Walker SC., Fitting linear mixed-effects models using lme4, J Stat Softw, 67, 1, (2015); Kamil B., MuMIn: multi-model inference, R package version, 1, 6, pp. 1-15, (2016); Kuznetsova A, Brockhoff PB, Christensen RHB., lmerTest package: tests in linear mixed effects models, J Stat Softw, 82, 13, (2017); Dix C, Arundale A, Silvers-Granelli H, Marmon A, Zarzycki R, Snyder-Mackler L., Biomechanical changes during a 90o cut in collegiate female soccer players with participation in The 11+, Int J Sports Phys Ther, (2021); Sigurdsson HBB, Sveinsson Th, Briem K., Timing, not magnitude, of force may explain sex-dependent risk of ACL injury, Knee Surg Sports Traumatol Arthrosc, 26, 8, (2018); Zaslow TL, Pace JL, Mueske NM, Et al., Comparison of lateral shuffle and side-step cutting in young recreational athletes, Gait Posture, 44, pp. 189-193, (2016); Maniar N, Schache AG, Sritharan P, Opar DA., Non-knee-spanning muscles contribute to tibiofemoral shear as well as valgus and rotational joint reaction moments during unanticipated sidestep cutting, Sci Rep, 8, 1, (2018); Akbari H, Sahebozamani M, Daneshjoo A, Amiri-Khorasani M, Shimokochi Y., Effect of the FIFA 11+ on landing patterns and baseline movement errors in elite male youth soccer players, J Sport Rehabil, 29, 6, pp. 730-737, (2020)","H.B. Sigurðsson; Physical Therapy, University of Iceland, Iceland; email: harbs@hi.is","","North American Sports Medicine Institute","21592896","","","","English","Int. J. Sport. Phys. Ther.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85135556555" "Uday H.","Uday, H. (57213354123)","57213354123","Predicting the distance of the soccer throw-in by means of some kinematic variables","2019","Series on Biomechanics","33","4","","34","39","5","1","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85077768956&partnerID=40&md5=7d9c609f86083772b7a4d6973f598099","Department of Physical Education and Sports Sciences, Al-Kitab University Altun Kupri, Kirkuk, 36015, Iraq","Uday H., Department of Physical Education and Sports Sciences, Al-Kitab University Altun Kupri, Kirkuk, 36015, Iraq","Throw-in skill plays an important role to identify the outcome of soccer game if it`s invested in the best way. The purpose of the study is to analyse this skill and to find the most important kinematic variables that contribute to achieving a greater throw distance to reach the level of ideal technical performance. The participants are 12 players from the team Al-Kitab University soccer. There were three attempts for throw-in at the position of movement with the making one leg in front of other for each player, the best attempt was analysed. It was noticed the variable velocity of the ball's flight is the most contribution kinematic variable of throwing distance 96.7%. This contribution is greater 98.1% when this variable is matched with the variable of flying ball angle. Two regression prediction equations has been concluded for the distance of the ball throw with the skill of the soccer throw-in. It is precisely reached the first flight velocity of the ball is: Throwing distance =-10.881 + 1.775 (ball flight speed), and the second in terms of speed and angle of ball flight: Throwing distance =-7.720 + 1.395 (ball flight speed) + 0.149 (ball flight angle). © 2019, Bulgarian Academy of Sciences. All rights reserved.","Biomechanics; Football; Throwing","adult; article; biomechanics; flying; football; human; leg; prediction; skill; soccer; velocity","Uday H., Biomechanics Evaluation at Football School. Cairo: Arabic Alqalam Voice, (2010); Hall S., Basic Biomechanics, (1999); Lotfalian M., Lenjannejadian S., Mojtahedi H., Biomechanical Differences between two types of Soccer throw-in Techniques, Paper Presented At: International Conference of the Polish Society of Biomechanics; 16Th-19Th September; Poland, (2012); Lees A., The Biomechanics of Football Skills, pp. 37-43, (2008); Lees A., Nolan L., The biomechanics of soccer: A review, J Sports Sciences, 16, 3, pp. 211-234, (1998); Linthorne N., Thomas J., The effect of ball spin rate on distance achieved in a long soccer throw-in, Procedia Engineering, 147, pp. 677-682, (2016); Linthorne N., Everett D., Soccer: Release angle for attaining maximum distance in the soccer throw-in, Sports Biomechanics, 5, 2, pp. 243-260, (2006); Erak M., The contribution of some physical measurements at a distance throw for football players applicants, J Physical Education Sciences, 4, 2, pp. 193-219, (2011); Lees A., Kemp M., Moura F., A Biomechanical Analysis of the Soccer Throw-In with a Particular Focus on the Upper Limb Motion, pp. 92-98, (2005); Hinz L., Leichtathletik: Wurf Und Stoss. Analysen Und Empfehlungen Fueer Die Disziplinen Kugelstossen, Diskuswerfen, Speerwerfen Und Hammerwerfen, (1991); Menzel H., Zur Biomechanik von Schlagwurfbewegungen: Empirische Untersuchungen am, Beispiel Des Speerwurfs. Frankfurt: Deutsch., (1988)","H. Uday; Department of Physical Education and Sports Sciences, Al-Kitab University Altun Kupri, Kirkuk, 36015, Iraq; email: dr_udayhusan@uoalkitab.edu.iq","","Bulgarian Academy of Sciences","13132458","","","","English","Ser. Biomech.","Article","Final","","Scopus","2-s2.0-85077768956" "Villa Vicente J.G.; Garcia-Lopez J.; Morante Rabago J.C.; Pascual C.M.","Villa Vicente, J.G. (7005142099); Garcia-Lopez, J. (7006349111); Morante Rabago, J.C. (6507162096); Pascual, C.M. (56681362500)","7005142099; 7006349111; 6507162096; 56681362500","Explosive force profile and speed in soccer players professional and amateurs; [Perfil de fuerza explosiva y velocidad en futbolistas profesionales y amateurs]","1999","Archivos de Medicina del Deporte","16","72","","315","324","9","2","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0032875595&partnerID=40&md5=4900795d12649e6f17eecb187cc40152","INCAFD, Campus Universitario Vegazana, Universidad de Leon, 24071 Leon, Spain","Villa Vicente J.G., INCAFD, Campus Universitario Vegazana, Universidad de Leon, 24071 Leon, Spain; Garcia-Lopez J., INCAFD, Campus Universitario Vegazana, Universidad de Leon, 24071 Leon, Spain; Morante Rabago J.C., INCAFD, Campus Universitario Vegazana, Universidad de Leon, 24071 Leon, Spain; Pascual C.M., INCAFD, Campus Universitario Vegazana, Universidad de Leon, 24071 Leon, Spain","In order to evaluate the explosive force and speed of the inferior extremity, 38 soccer players belonging to the first and second equipment of a Professional Club accomplished in an optimum moment of the season the following sequence of test: on contact platform the Bosco test (S J, CMJ, DJ40, RJ15) and the Abalakov test; using photoelectric cells a career of 50m fractioned in partial. The analysis of the two equipment does not show meaningful differences in the platform test, in the hosiery speeds of the partial neither in the VMax; so only the I.E. it is greater in the amateurs. The analysis of the differences attending to the position in the field (Groups 2, 3 and 4) only reflects greater values in the RJ15 of the Grupo4 of professionals. The V0-20 was significantly inferior to the speeds rest hosieries; the V20-50 greater than the V0-50 and this less than the V20-30, V30-40 and V40-50. The results of both equipment show a great variability, being emphasized differences between the maximum and minimum values of the first equipment (professional) of up to 19.8 cms. in the CMJ and of 1.1 seg. in the T0-50. Also they have been observed increased and meaningful relationships between the vertical jump test and the speeds in the 50 m. Test. In conclusion, in spite of the importance given to the explosive force and speed in the professional soccer players, this shows intermediate values between power disciplines and of resistance. The high relationships between explosive force and speed, as well as the nonexistence of differences between professional and amateurs soccer players, suggest that if the explosive force and speed is considered important in the yield in soccer, it must be cared the introduction and adequate contents sequence about training that develop it.","Anaerobic power; Competition level; Explosive force; Position in the field; Soccer player; Speed","anaerobic capacity; article; biomechanics; competition; fitness; functional assessment; human; sport; velocity","","J.G. Villa Vicente; INCAFD, Campus Universitario Vegazana, Universidad de Leon, 24071 Leon, Spain; email: dmpjvv@unileon.es","","","02128799","","AMDEF","","Spanish","Arch. Med. Deporte","Article","Final","","Scopus","2-s2.0-0032875595" "Brandenburg S.R.; Matelic T.M.","Brandenburg, Shawn R. (57202940324); Matelic, Thomas M. (6508290282)","57202940324; 6508290282","Loss of internal tibial rotation after anterior cruciate ligament reconstruction","2018","Orthopedics","41","1","","e22","e26","4","1","10.3928/01477447-20171106-03","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85049893024&doi=10.3928%2f01477447-20171106-03&partnerID=40&md5=7bbde8bd450c8756f8b60a1d1dd117f8","Orthopaedic Surgery Residency, Metro Health University of Michigan Health, 5900 Byron Center Ave SW, Wyoming, 49519, MI, United States","Brandenburg S.R., Orthopaedic Surgery Residency, Metro Health University of Michigan Health, 5900 Byron Center Ave SW, Wyoming, 49519, MI, United States; Matelic T.M., Orthopaedic Surgery Residency, Metro Health University of Michigan Health, 5900 Byron Center Ave SW, Wyoming, 49519, MI, United States","The flexion angle of the knee and the position of the tibia need to be considered during tensioning of the anterior cruciate ligament (ACL) graft to avoid overconstraining the knee. The purpose of this report was to describe 2 cases of loss of tibial internal rotation after single-bundle anatomic ACL reconstruction with graft tensioning in flexion. Retrospective review of each patient's operative chart revealed that the graft was tensioned in flexion and placed in an anatomic position in the femoral tunnel at the time of the index operation. Primary outcome was ACL revision surgery. Secondary outcome data included Lysholm scores and Lachman and pivot shift tests. Two patients underwent revision ACL reconstruction with a more vertical tunnel placed through a transtibial technique. The graft was tensioned in full knee extension and neutral rotation of the tibia. This resulted in restoration of normal tibial internal rotation to 10°. Lysholm scores improved from 35 to 90 in patient 1 and from 12 to 61 in patient 2. Patient 1 returned to college soccer at 6 months postoperatively. Her knee was stable to Lachman and pivot shift tests. Patient 2 has been followed for 12 months and has returned to all normal activities without pain or dysfunction. Anatomic femoral placement of the ACL with improper positioning of the knee during tensioning of the graft may capture the knee and lead to loss of the normal internal rotation. The surgeon should be aware of this complication during primary ACL reconstruction. © 2018 Slack Incorporated. All rights reserved.","","Adolescent; Adult; Anterior Cruciate Ligament Injuries; Anterior Cruciate Ligament Reconstruction; Biomechanical Phenomena; Female; Humans; Knee Joint; Postoperative Period; Range of Motion, Articular; Rotation; Tibia; adult; anterior cruciate ligament reconstruction; Article; autograft; bone graft; case report; clinical article; disease severity; female; femoral condyle; follow up; human; joint instability; joint mobility; joint stability; knee arthroscopy; knee meniscus rupture; knee pain; Lysholm score; medical record review; meniscectomy; nuclear magnetic resonance imaging; physiotherapy; postoperative period; range of motion; retrospective study; return to sport; sitting; soccer; surgical technique; swelling; synovitis; tibia; walking; weight bearing; young adult; adolescent; anterior cruciate ligament injury; biomechanics; joint characteristics and functions; knee; pathophysiology; rotation; tibia","Driscoll M.D., Isabell G.P., Conditt M.A., Et al., Comparison of 2 femoral tunnel locations in anatomic single-bundle anterior cruciate ligament reconstruction: A biomechanical study, Arthroscopy, 28, 10, pp. 1481-1489, (2012); Musahl V., Plakseychuk A., VanScyoc A., Et al., Varying femoral tunnels between the anatomical footprint and isometric positions: Effect on kinematics of the anterior cruciate ligament-reconstructed knee, Am J Sports Med, 33, 5, pp. 712-718, (2005); Girgis F.G., Marshall J.L., Monajem A., The cruciate ligaments of the knee joint: Anatomical, functional and experimental analysis, Clin Orthop Relat Res, 106, pp. 216-231, (1975); Palmer I., On the injuries to the ligaments of the knee joint: A clinical study, Acta Chir Scand Suppl, 53, pp. 1-282, (1938); Sherman S.L., Chalmers P.N., Yanke A.B., Et al., Graft tensioning during knee ligament reconstruction: Principles and practice, J Am Acad Orthop Surg, 20, 10, pp. 633-645, (2012); Loh J.C., Fukuda Y., Tsuda E., Steadman R.J., Fu F.H., Woo S.L., Knee stability and graft function following anterior cruciate ligament reconstruction: Comparison between 11 o'clock and 10 o'clock femoral tunnel placement. 2002 Richard O'Connor Award paper, Arthroscopy, 19, 3, pp. 297-304, (2003); Hefzy M.S., Grood E.S., Noyes F.R., Factors affecting the region of most isometric femoral attachments: Part II. The anterior cruciate ligament, Am J Sports Med, 17, 2, pp. 208-216, (1989); Zavras T.D., Race A., Amis A.A., The effect of femoral attachment location on anterior cruciate ligament reconstruction: Graft tension patterns and restoration of normal anterior-posterior laxity patterns, Knee Surg Sports Traumatol Arthrosc, 13, 2, pp. 92-100, (2005); Ristanis S., Stergiou N., Siarava E., Ntoulia A., Mitsionis G., Georgoulis A.D., Effect of femoral tunnel placement for reconstruction of the anterior cruciate ligament on tibial rotation, J Bone Joint Surg Am, 91, 9, pp. 2151-2158, (2009); Nawabi D.H., Tucker S., Schafer K.A., Et al., ACL fibers near the lateral intercondylar ridge are the most load bearing during stability examinations and isometric through passive flexion, Am J Sports Med, 44, 10, pp. 2563-2571, (2016); Arneja S., McConkey M.O., Mulpuri K., Et al., Graft tensioning in anterior cruciate ligament reconstruction: A systematic review of randomized controlled trials, Arthroscopy, 25, 2, pp. 200-207, (2009); Nabors E.D., Richmond J.C., Vannah W.M., Mc-Conville O.R., Anterior cruciate ligament graft tensioning in full extension, Am J Sports Med, 23, 4, pp. 488-492, (1995); Bylski-Austrow D.I., Grood E.S., Hefzy M.S., Holden J.P., Butler D.L., Anterior-cruciate ligament replacements: A mechanical study of femoral attachment location, flexion angle at tensioning, and initial tension, J Orthop Res, 8, 4, pp. 522-531, (1990); Melby A., Noble J.S., Askew M.J., Boom A.A., Hurst F.W., The effects of graft tensioning on the laxity and kinematics of the anterior cruciate ligament reconstructed knee, Arthroscopy, 7, 3, pp. 257-266, (1991); Hoser C., Tecklenburg K., Kuenzel K.H., Fink C., Postoperative evaluation of femoral tunnel position in ACL reconstruction: Plain radiography versus computed tomography, Knee Surg Sports Traumatol Arthrosc, 13, 4, pp. 256-262, (2005)","S.R. Brandenburg; Orthopaedic Surgery Residency, Metro Health University of Michigan Health, Wyoming, 5900 Byron Center Ave SW, 49519, United States; email: shawn.brandenburg@gmail.com","","Slack Incorporated","01477447","","ORTHD","29136255","English","Orthopedics","Article","Final","","Scopus","2-s2.0-85049893024" "Matteo F.; Severin S.; Heiner B.; Lorenz R.; Slavko R.","Matteo, Ferraro (56576363500); Severin, Stalder (56576055100); Heiner, Baur (56576265600); Lorenz, Radlinger (56575922900); Slavko, Rogan (54417910400)","56576363500; 56576055100; 56576265600; 56575922900; 54417910400","Evaluation of a foot switch system for the maximal instep kick in soccer – Results from a single-case study","2015","Journal of Physical Education and Sport","15","1","10","57","63","6","2","10.7752/jpes.2015.01010","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925959561&doi=10.7752%2fjpes.2015.01010&partnerID=40&md5=d7a6264b967fb443a1343c1c8a5c6ec5","Bern University of Applied Science, Health, Bern, Switzerland; AfiPT, Akademie für integrative Physiotherapie und Trainingslehre, Grenzach-Wyhlen, Germany","Matteo F., Bern University of Applied Science, Health, Bern, Switzerland; Severin S., Bern University of Applied Science, Health, Bern, Switzerland; Heiner B., Bern University of Applied Science, Health, Bern, Switzerland; Lorenz R., Bern University of Applied Science, Health, Bern, Switzerland; Slavko R., Bern University of Applied Science, Health, Bern, Switzerland, AfiPT, Akademie für integrative Physiotherapie und Trainingslehre, Grenzach-Wyhlen, Germany","Aim of this single-case study was to investigate the feasibility and the validity of the use of Footswitch System (FS) during maximal instep kick (MIK). One participant conducted 25 MIK’s simultaneously recorded by both systems. The MIK was divided into three time phases and total phase and were measured in milliseconds. Feasibility outcome was the time schedule. Validity was examined with ICC and the Bland-Altman method. Total measuring time was 3 hours and 10 minutes. 27% of 25 MIK’s were usable for evaluation. Systematic biases are determined for all phases. Negative bias for phase 1 (-7.1 ms), phase 3 (- 3.6 ms) and MIK (- 4.9 ms) and positive bias for phase 3 (5.9 ms) are presented. The authors conclude that the actual investigation protocol is not feasible for measuring the MIK and should be modified. © 2015, Editura Universitatea din Pitesti. All rights reserved.","Biomechanics; Electrogoniometer; Three dimensional movement analysis system","","Bland J.M., Altman D.G., Statistical methods for assessing agreement between two methods of clinical measurement, Lancet, 1, 8476, pp. 307-310, (1986); Bronner S., Agraharasamakulam S., Ojofeitimi S., Reliability and validity of electrogoniometry measurement of lower extremity movement, Journal of Medical Engineering & Technology, 34, 3, pp. 232-242, (2010); Budgell B., Guidelines to the writing of case studies, J Can Chiropr Assoc, 52, 4, pp. 199-204, (2008); Charnock B.L., Lewis C.L., Garrett W.E., Queen R.M., Adductor longus mechanics during the maximal effort soccer kick, Sports Biomechanics, 8, 3, pp. 223-234, (2009); Green B.N., Johnson C.D., How to write a case report for publication, J Chiropr Med, 5, 2, pp. 72-82, (2006); Grouven U., Bender R., Ziegler A., Lange S., Comparing methods of measurement, Deutsche Medizinische Wochenschrift, 132, pp. e69-e73, (2007); Hausdorff J.M., Ladin Z., Wei J.Y., Footswitch system for measurement of the temporal parameters of gait, Journal of Biomechanics, 28, 3, pp. 347-351, (1995); Heidt R.S., Sweeterman L.M., Carlonas R.L., Traub J.A., Tekulve F.X., Avoidance of soccer injuries with preseason conditioning, American Journal of Sports Medicine, 28, 5, pp. 659-662, (2000); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J Sports Sci Med, 6, 2, pp. 154-165, (2007); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, 8, pp. 805-817, (2010); Manolopoulos E., Papadopoulos C., Kellis E., Effects of combined strength and kick coordination training on soccer kick biomechanics in amateur players, Scandinavian Journal of Medicine & Science in Sports, 16, 2, pp. 102-110, (2006); McDermott A., Bolger C., Keating L., McEvoy L., Meldrum D., Reliability of three-dimensional gait analysis in cervical spondylotic myelopathy, Gait & Posture, 32, 4, pp. 552-558, (2010); Mills P.M., Barrett R.S., Morrison S., Agreement between footswitch and ground reaction force techniques for identifying gait events: Inter-session repeatability and the effect of walking speed, Gait & Posture, 26, 2, pp. 323-326, (2007); Pinfield L.T., A field evaluation of perspectives on organizational decision making, Administrative Science Quarterly, 31, 3, pp. 365-388, (1986); Rogan S., Nach dem training ist vor dem training, Physiopraxis, 6, pp. 24-28, (2008); Scurr J.C., Abbott V., Ball N., Quadriceps emg muscle activation during accurate soccer instep kicking, Journal of Sports Sciences, 29, 3, pp. 247-251, (2011); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomechanics / International Society of Biomechanics in Sports, 4, 1, pp. 59-72, (2005); Shan G., Zhang X., From 2d leg kinematics to 3d full-body biomechanics-the past, present and future of scientific analysis of maximal instep kick in soccer, Sports Medicine, Arthroscopy, Rehabilitation, Therapy & Technology : SMARTT, 3, 1, (2011); Shan G.B., Influence of gender and experience on the maximal instep soccer kick, European Journal of Sport Science, 9, 2, pp. 107-114, (2009); Thabane L., Ma J., Chu R., Cheng J., Ismaila A., Rios L.P., Goldsmith C.H., A tutorial on pilot studies: The what, why and how, BMC Medical Research Methodology, 10, (2010); Westhoff B., Hirsch M.A., Hefter H., Wild A., Krauspe R., How reliable are data from 3d-gait analysis, Sportverletzung Sportschaden : Organ Der Gesellschaft Fur Orthopadisch-Traumatologische Sportmedizin, 18, 2, pp. 76-79, (2004); Windolf M., Gotzen N., Morlock M., Systematic accuracy and precision analysis of video motion capturing systems--exemplified on the vicon-460 system, J Biomech, 41, 12, pp. 2776-2780, (2008)","R. Slavko; Bern University of Applied Science, Health, Bern, Switzerland; email: slavko.rogan@bfh.ch","","Editura Universitatii din Pitesti","22478051","","","","English","J. Phys. Educ. Sport","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-84925959561" "Tsutsumi S.; Sasadai J.; Maeda N.; Shimizu R.; Suzuki A.; Fukui K.; Arima S.; Tashiro T.; Kaneda K.; Yoshimi M.; Mizuta R.; Ishihara H.; Esaki H.; Tsuchida K.; Terada T.; Komiya M.; Urabe Y.","Tsutsumi, Shogo (57189349667); Sasadai, Junpei (55552049800); Maeda, Noriaki (55324041300); Shimizu, Reia (57205202119); Suzuki, Akira (57866614600); Fukui, Kazuki (57201014622); Arima, Satoshi (57337861100); Tashiro, Tsubasa (57205194025); Kaneda, Kazuki (57223025123); Yoshimi, Mitsuhiro (57338160200); Mizuta, Rami (57221652849); Ishihara, Honoka (57715954900); Esaki, Hinata (57866411700); Tsuchida, Koki (58539695000); Terada, Tomoki (57865794200); Komiya, Makoto (57203224361); Urabe, Yukio (7006603067)","57189349667; 55552049800; 55324041300; 57205202119; 57866614600; 57201014622; 57337861100; 57205194025; 57223025123; 57338160200; 57221652849; 57715954900; 57866411700; 58539695000; 57865794200; 57203224361; 7006603067","Head Impact in Blind Football During the Tokyo Paralympics: Video-Based Observational Study","2023","American Journal of Physical Medicine and Rehabilitation","102","9","","836","839","3","1","10.1097/PHM.0000000000002187","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85168255678&doi=10.1097%2fPHM.0000000000002187&partnerID=40&md5=89ba5c9cdcd818cba2f017629b54c2b6","Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Sports Medical Center, Japan Institute of Sports Sciences (JISS), Tokyo, Japan","Tsutsumi S., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Sasadai J., Sports Medical Center, Japan Institute of Sports Sciences (JISS), Tokyo, Japan; Maeda N., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Shimizu R., Sports Medical Center, Japan Institute of Sports Sciences (JISS), Tokyo, Japan; Suzuki A., Sports Medical Center, Japan Institute of Sports Sciences (JISS), Tokyo, Japan; Fukui K., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Arima S., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Tashiro T., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Kaneda K., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Yoshimi M., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Mizuta R., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Ishihara H., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Esaki H., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Tsuchida K., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Terada T., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Komiya M., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Urabe Y., Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan","Head impacts during blind football are common and have high injury rates; however, their characteristics and impact are still underreported. We compared head impact characteristics in blind football players with and without falls on all 18 official blind football match videos from the Tokyo 2020 Paralympic games. The rate of head impacts with falls was significantly higher in the preliminary phase, offense phase, and during dribbling. Significant differences in the region of the head impacted were also observed among the impact subjects/objects. The findings in this study would contribute to the development of injury prevention measures to minimize head injuries from head impact in blind football. © Wolters Kluwer Health, Inc. All rights reserved.","Blind Football; Concussion; Head Impact; Paralympics; Video Analysis","Biomechanical Phenomena; Craniocerebral Trauma; Humans; Soccer; Tokyo; Video Recording; biomechanics; head injury; human; Japan; soccer; videorecording","Derman W., Runciman P., Schwellnus M., High precompetition injury rate dominates the injury profile at the Rio 2016 Summer Paralympic Games: A prospective cohort study of 51 198 athlete days, Br J Sports Med, 52, pp. 24-31, (2018); Willick S.E., Webborn N., Emery C., The epidemiology of injuries at the London 2012 Paralympic Games, Br J Sports Med, 47, pp. 426-432, (2013); Webborn N., Cushman D., Blauwet C.A., The epidemiology of injuries in football at the London 2012 Paralympic Games, Pm&r, 8, pp. 545-552, (2016); Weiler R., Blauwet C., Clarke D., Concussion in para sport: The first position statement of the Concussion in Para Sport (CIPS) Group, Br J Sports Med, 55, pp. 1187-1195, (2021); Webborn N., Blauwet C.A., Derman W., Heads up on concussion in para-sport, Br J Sports Med, 52, pp. 1157-1158, (2018); Weiler R., Van Mechelen W., Fuller C., Do neurocognitive SCAT3 baseline test scores differ between footballers (soccer) living with and without disability? A cross-sectional study, Clin J Sport Med, 28, pp. 43-50, (2018); Hutchison M.G., Comper P., Meeuwisse W.H., A systematic video analysis of National Hockey League (NHL) concussions, part I: Who, when, where and what?, Br J Sports Med, 49, pp. 547-551, (2015); Olsen O.E., Myklebust G., Engebretsen L., Injury mechanisms for anterior cruciate ligament injuries in team handball: A systematic video analysis, Am J Sports Med, 32, pp. 1002-1012, (2004); Sasadai J., Maeda N., Shimizu R., Analysis of team-sport wheelchair falls during the Rio 2016 Summer Paralympic Games: A video-based cross-sectional observational study, Bmj Open, 10, (2020); Fitzpatrick D., Thompson P., Kipps C., Head impact forces in blind football are greater in competition than training and increased cervical strength may reduce impact magnitude, Int J Inj Contr Saf Promot, 28, pp. 194-200, (2021); Kenny R., Elez M., Clancy A., Head impact exposure and biomechanics in university varsity women's soccer, Ann Biomed Eng, 18, pp. 1-12, (2022); Emery C.A., Black A.M., Kolstad A., What strategies can be used to effectively reduce the risk of concussion in sports? A systematic review, Br J Sports Med, 51, pp. 978-984, (2017); McGuine T., Post E., Pfaller A.Y., Does soccer headgear reduce the incidence of sport-related concussion? A cluster, randomised controlled trial of adolescent athletes, Br J Sports Med, 54, pp. 408-413, (2020); Schneider D.K., Grandhi R.K., Bansal P., Current state of concussion prevention strategies: A systematic review and meta-Analysis of prospective, controlled studies, Br J Sports Med, 51, pp. 1473-1482, (2017); Huber C.M., Patton D.A., Jain D., Variations in head impact rates in male and female high school soccer, Med Sci Sports Exerc, 53, pp. 1245-1251, (2021); Football Five-A-side Rules, (2021); Hirad A.A., Bazarian J.J., Merchant-Borna K., A common neural signature of brain injury in concussion and subconcussion, Sci Adv, 5, (2019); Mieda T., Kokubu M., Blind footballers direct their head towards an approaching ball during ball trapping, Sci Rep, 10, (2020); Brennan J.H., Mitra B., Synnot A., Accelerometers for the assessment of concussion in male athletes: A systematic review and meta-Analysis, Sports Med, 47, pp. 469-478, (2017); Bailes J.E., Petraglia A.L., Omalu B.I., Role of subconcussion in repetitive mild traumatic brain injury, J Neurosurg, 119, pp. 1235-1245, (2013); Mainwaring L., Ferdinand Pennock K.M., Mylabathula S., Subconcussive head impacts in sport: A systematic review of the evidence, Int J Psychophysiol, 132, pp. 39-54, (2018)","Y. Urabe; Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, 1-2-3 Kasumi, Minami-ku, 734-8553, Japan; email: yurabe@hiroshima-u.ac.jp","","Lippincott Williams and Wilkins","08949115","","AJPRE","36757853","English","Am. J. Phys. Med. Rehabil.","Article","Final","","Scopus","2-s2.0-85168255678" "Lauck B.J.; Sinnott A.M.; Kiefer A.W.; Padua D.A.; Powell J.R.; Sledge H.R.; Mihalik J.P.","Lauck, Bradley J. (57850228500); Sinnott, Aaron M. (57201902362); Kiefer, Adam W. (35316086800); Padua, Darin A. (7005626883); Powell, Jacob R. (58088914600); Sledge, Haley R. (57850710500); Mihalik, Jason P. (8428192600)","57850228500; 57201902362; 35316086800; 7005626883; 58088914600; 57850710500; 8428192600","Association Between Head Impact Biomechanics and Physical Load in College Football","2022","Annals of Biomedical Engineering","50","11","","1437","1443","6","1","10.1007/s10439-022-03042-8","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85136181135&doi=10.1007%2fs10439-022-03042-8&partnerID=40&md5=a0e0be5346d84919ec8d257b29e5f452","Matthew Gfeller Center, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill, 2207 Stallings-Evans Sports Medicine Center, Campus, Box 8700, Chapel Hill, 27599-8700, NC, United States; STAR Heel Performance Laboratory, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill, G406 Fetzer Hall, Chapel Hill, NC, United States; MOTION Science Institute, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill, 032 Fetzer Hall, Chapel Hill, NC, United States; Human Movement Science, Department of Health Sciences, The University of North Carolina at Chapel Hill, 209 Fetzer Hall, Chapel Hill, NC, United States","Lauck B.J., Matthew Gfeller Center, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill, 2207 Stallings-Evans Sports Medicine Center, Campus, Box 8700, Chapel Hill, 27599-8700, NC, United States; Sinnott A.M., Matthew Gfeller Center, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill, 2207 Stallings-Evans Sports Medicine Center, Campus, Box 8700, Chapel Hill, 27599-8700, NC, United States; Kiefer A.W., Matthew Gfeller Center, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill, 2207 Stallings-Evans Sports Medicine Center, Campus, Box 8700, Chapel Hill, 27599-8700, NC, United States, STAR Heel Performance Laboratory, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill, G406 Fetzer Hall, Chapel Hill, NC, United States, Human Movement Science, Department of Health Sciences, The University of North Carolina at Chapel Hill, 209 Fetzer Hall, Chapel Hill, NC, United States; Padua D.A., MOTION Science Institute, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill, 032 Fetzer Hall, Chapel Hill, NC, United States, Human Movement Science, Department of Health Sciences, The University of North Carolina at Chapel Hill, 209 Fetzer Hall, Chapel Hill, NC, United States; Powell J.R., Matthew Gfeller Center, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill, 2207 Stallings-Evans Sports Medicine Center, Campus, Box 8700, Chapel Hill, 27599-8700, NC, United States, Human Movement Science, Department of Health Sciences, The University of North Carolina at Chapel Hill, 209 Fetzer Hall, Chapel Hill, NC, United States; Sledge H.R., Matthew Gfeller Center, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill, 2207 Stallings-Evans Sports Medicine Center, Campus, Box 8700, Chapel Hill, 27599-8700, NC, United States; Mihalik J.P., Matthew Gfeller Center, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill, 2207 Stallings-Evans Sports Medicine Center, Campus, Box 8700, Chapel Hill, 27599-8700, NC, United States, Human Movement Science, Department of Health Sciences, The University of North Carolina at Chapel Hill, 209 Fetzer Hall, Chapel Hill, NC, United States","Head impacts and physical exertion are ubiquitous in American football, but the relationship between these factors is poorly understood across a competitive season or even within an individual session. Gameplay characteristics, including player position and session type, may contribute to these relationships but have not been prospectively examined. The current study aimed to determine if an association exists between head impact biomechanics and physical load metrics. We prospectively studied college football players during the 2017–2021 football seasons across representative playing positions (15 offensive and defensive linemen, 11 linebackers and tight ends, and 15 defensive backs, running backs, and receivers). Participants wore halters embedded with Catapult Vector GPS monitoring systems to quantify player load and participant helmets were equipped with the Head Impact Telemetry System to quantify head impact biomechanics and repetitive head impact exposure (RHIE). Generalized linear models and linear regression models were employed to analyze in-session and season-long outcomes, while addressing factors such as player position and session type on our data. Player load was associated with RHIE (p < 0.001). Season-long player load predicted season-long RHIE (R2 = 0.31; p < 0.001). Position group affected in-session player load (p = 0.025). Both player load and RHIE were greater in games than in practices (p < 0.001), and position group did not affect RHIE (p = 0.343). Physical load burden was associated with RHIE within sessions and across an entire season. Session type affected both RHIE and player load, while position group only affected player load. Our data point to tracking physical load burden as a potential proxy for monitoring anticipated RHIE during the season. © 2022, The Author(s) under exclusive licence to Biomedical Engineering Society.","Concussion; Mechanics; Mild traumatic brain injury; Performance; Physical stress; Wearable sensors","Biomechanical Phenomena; Football; Head Protective Devices; Humans; Running; Soccer; Biomechanics; Biophysics; Brain; Embedded systems; Regression analysis; Sports; American footballs; Concussion; Gameplay; Head impact; Impact biomechanics; Mild traumatic brain injuries; Performance; Physical loads; Physical stress; Session types; Article; athlete; biomechanics; concussion; exercise; football player; head impact telemetry; helmet; human; human experiment; male; physical stress; prospective study; running; telemetry; traumatic brain injury; biomechanics; football; running; soccer; Wearable sensors","Baugh C.M., Kiernan P.T., Kroshus E., Daneshvar D.H., Montenigro P.H., McKee A.C., Stern R.A., Frequency of head-impact related outcomes by position in NCAA division I collegiate football players, J. Neurotrauma., 32, pp. 314-326, (2014); (2017); Broglio S.P., Williams R.M., O'Connor K.L., Goldstick J., Football players' head-impact exposure after limiting of full-contact practices, J. Athl. Train., 51, pp. 511-518, (2016); Campbell K.R., Marshall S.W., Luck J.F., Pinton G.F., Stitzel J.D., Boone J.S., Guskiewicz K.M., Mihalik J.P., Head impact telemetry system's video-based impact detection and location accuracy, Med. Sci. Sports. Exerc., 52, pp. 2198-2206, (2020); Campolettano E.T., Rowson S., Duma S.M., Drill-specific head impact exposure in youth football practice, J. Neurosurg. Pediatr., 18, pp. 536-541, (2016); Caplar N.S., Tacchellabirrer S., Quantitative evaluation of gender bias in astronomical publications from citation counts, Nat. Astron., 1, pp. 1-5, (2017); Crisco J.J., Fiore R., Beckwith J.G., Chu J.J., Brolinson P.G., Duma S., McAllister T.W., Duhaime A.-C., Greenwald R.M., Frequency and location of head impact exposures in individual collegiate football players, J. Athl. Train., 45, pp. 549-559, (2010); Crisco J.J., Wilcox B.J., Beckwith J.G., Chu J.J., Duhaime A.-C., Rowson S., Duma S.M., Maerlender A.C., McAllister T.W., Greenwald R.M., Head impact exposure in collegiate football players, J. Biomech., 44, pp. 2673-2678, (2011); Daniel R.W., Rowson S., Duma S.M., Head impact exposure in youth football, Ann. Biomed. Eng., 40, pp. 976-981, (2012); DeMartini J.K., Martschinske J.L., Casa D.J., Lopez R.M., Ganio M.S., Walz S.M., Coris E.E., Physical demands of national collegiate athletic association division I football players during preseason training in the heat, J. Strength Cond. Res., 25, pp. 2935-2943, (2011); Dion M.L., Sumner J.L., Mitchell S.M., Gendered citation patterns across political science and social science methodology fields, Polit. Anal., 26, pp. 312-327, (2018); Dworkin J.D., Linn K.A., Teich E.G., Zurn P., Shinohara R.T., Bassett D.S., The extent and drivers of gender imbalance in neuroscience reference lists, Nat. Neurosci., 23, pp. 918-926, (2020); Edwards T., Spiteri T., Piggott B., Haff G.G., Joyce C., A narrative review of the physical demands and injury incidence in American football: application of current knowledge and practices in workload management, Sports Med., 48, pp. 45-55, (2018); Fino P.C., Becker L.N., Fino N.F., Griesemer B., Goforth M., Brolinson P.G., Effects of recent concussion and injury history on instantaneous relative risk of lower extremity injury in division I collegiate athletes, Clin. J. Sport. Med., 29, pp. 218-223, (2019); Ford J.M., Campbell K.R., Ford C.B., Boyd K.E., Padua D.A., Mihalik J.P., Can functional movement assessment predict football head impact biomechanics?, Med. Sci. Sports. Exerc., 50, pp. 1233-1240, (2018); Funk J.R., Rowson S., Daniel R.W., Duma S.M., Validation of concussion risk curves for collegiate football players derived from HITS data, Ann. Biomed. Eng., 40, pp. 79-89, (2012); Gilbert F.C., Burdette G.T., Joyner A.B., Llewellyn T.A., Buckley T.A., Association between concussion and lower extremity injuries in collegiate athletes, Sports Health., 8, pp. 561-567, (2016); Halstead M.E., Walter K.D., Moffatt K., Sport-related concussion in children and adolescents, Pediatrics., 142, (2018); Higham D.G., Pyne D.B., Anson J.M., Hopkins W.G., Eddy A., Comparison of activity profiles and physiological demands between international rugby Sevens matches and training, J. Strength Cond. Res., 30, pp. 1287-1294, (2016); Hoppe M.W., Baumgart C., Polglaze T., Freiwald J., Validity and reliability of GPS and LPS for measuring distances covered and sprint mechanical properties in team sports, PLoS ONE., 13, (2018); Houck Z., Asken B., Bauer R., Pothast J., Michaudet C., Clugston J., Epidemiology of sport-related concussion in an NCAA division I football bowl subdivision sample, Am. J. Sports. Med., 44, pp. 2269-2275, (2016); Lynall R.C., Mauntel T.C., Padua D.A., Mihalik J.P., Acute lower extremity injury rates increase after concussion in college athletes, Med. Sci. Sports. Exerc., 47, pp. 2487-2492, (2015); Lynall R.C., Mauntel T.C., Pohlig R.T., Kerr Z.Y., Dompier T.P., Hall E.E., Buckley T.A., Lower extremity musculoskeletal injury risk after concussion recovery in high school athletes, J. Athl. Train., 52, pp. 1028-1034, (2017); Maliniak D., Powers R., Walter B.F., The gender citation gap in international relations, Int. Organ., 67, pp. 889-922, (2013); McPherson A.L., Nagai T., Webster K.E., Hewett T.E., Musculoskeletal injury risk after sport-related concussion: a systematic review and meta-analysis, Am. J. Sports Med., 47, pp. 1754-1762, (2019); Mez J., Daneshvar D.H., Kiernan P.T., Abdolmohammadi B., Alvarez V.E., Huber B.R., Alosco M.L., Solomon T.M., Nowinski C.J., McHale L., Cormier K.A., Kubilus C.A., Martin B.M., Murphy L., Baugh C.M., Montenigro P.H., Chaisson C.E., Tripodis Y., Kowall N.W., Weuve J., McClean M.D., Cantu R.C., Goldstein L.E., Katz D.I., Stern R.A., Stein T.D., McKee A.C., Clinicopathological evaluation of chronic traumatic encephalopathy in players of American football, JAMA., 318, pp. 360-370, (2017); Mihalik J., Chandran A., Powell J., Roby P., Guskiewicz K., Stemper B., Shah A., Rowson S., Duma S., Harezlak J., Riggen L., Broglio S., McAllister T., McCrea M., Do head injury biomechanics predict concussion clinical recovery in college American football players?, Ann. Biomed. Eng., 48, pp. 2555-2565, (2020); Mihalik J.P., Bell D.R., Marshall S.W., Guskiewicz K.M., Measurement of head impacts in collegiate football players: an investigation of positional and event-type differences, Neurosurgery., 61, pp. 1229-1235, (2007); Mitchell S.M., Lange S., Brus H., Gendered citation patterns in international relations journals, Int. Stud. Perspect., 14, pp. 485-492, (2013); Nicolella D.P., Torres-Ronda L., Saylor K.J., Schelling X., Validity and reliability of an accelerometer-based player tracking device, PLoS One., 13, (2018); O'Connor K.L., Rowson S., Duma S.M., Broglio S.P., Head-impact measurement devices: a systematic review, J. Athl. Train., 52, pp. 206-227, (2017); Ritchie D., Hopkins W.G., Buchheit M., Cordy J., Bartlett J.D., Quantification of training and competition load across a season in an elite Australian football club, Int. J. Sports. Physiol. Perform., 11, pp. 474-479, (2016); Sampson J.A., Murray A., Williams S., Halseth T., Hanisch J., Golden G., Fullagar H.H.K., Injury risk-workload associations in NCAA American college football, J. Sci. Med. Sport., 21, pp. 1215-1220, (2018); (2019); Stemper B.D., Shah A.S., Mihalik J.P., Harezlak J., Rowson S., Duma S., Riggen L.D., Brooks A., Cameron K.L., Giza C.C., Goldman J., Houston M.N., Jackson J., McGinty G., Broglio S.P., McAllister T.W., McCrea M., Head impact exposure in college football after a reduction in preseason practices, Med. Sci. Sports. Exerc., 52, pp. 1629-1638, (2020); Wellman A.D., Coad S.C., Goulet G.C., McLellan C.P., Quantification of competitive game demands of NCAA division I college football players using global positioning systems, J. Strength Cond. Res., 30, pp. 11-19, (2016)","J.P. Mihalik; Matthew Gfeller Center, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill, Chapel Hill, 2207 Stallings-Evans Sports Medicine Center, Campus, Box 8700, 27599-8700, United States; email: jmihalik@email.unc.edu","","Springer","00906964","","ABMEC","35972602","English","Ann Biomed Eng","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-85136181135" "Navandar A.; Kipp K.; Navarro E.","Navandar, Archit (56167078800); Kipp, Kristof (36835336600); Navarro, Enrique (24449528700)","56167078800; 36835336600; 24449528700","Hip and knee joint angle patterns and kicking velocity in female and male professional soccer players: A principal component analysis of waveforms approach","2022","Journal of Sports Sciences","40","17","","1919","1930","11","1","10.1080/02640414.2022.2121022","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85138313763&doi=10.1080%2f02640414.2022.2121022&partnerID=40&md5=881ef7f78c4648a8a5bf08c6102521f4","Universidad Europea de Madrid, Madrid, Spain; Universidad Politécnica de Madrid, Madrid, Spain; Marquette University, Milwaukee, WI, United States","Navandar A., Universidad Europea de Madrid, Madrid, Spain, Universidad Politécnica de Madrid, Madrid, Spain; Kipp K., Marquette University, Milwaukee, WI, United States; Navarro E., Universidad Politécnica de Madrid, Madrid, Spain","This study used principal component analysis (PCA) of waveforms to extract movement patterns from hip and knee angle time-series data; and determined if the extracted movement patterns were predictors of ball velocity during a soccer kick. Twenty-three female and nineteen male professional soccer players performed maximal effort instep kicks while motion capture and post-impact ball velocities data were recorded. Three-dimensional hip and knee joint angle time-series data were calculated from the beginning of the kicking leg’s backswing phase until the end of the follow-through phase and entered into separate PCAs for females and males. Three principal components (PC) (i.e., movement patterns) were extracted and PC scores were calculated. Pearson correlation coefficients were calculated to establish correlations between hip and knee PC scores and kicking velocity. Results showed better kicking performance in male players was associated with a greater difference between the hip extension at the end of the backswing/beginning of the leg cocking phases and hip flexion at the end of the follow-through phase (r = −0.519, p = 0.023) and a delayed internal rotation of the hip (r = 0.475, p = 0.040). No significant correlations between ball velocity and hip and knee kinematics were found for female players. © 2022 Informa UK Limited, trading as Taylor & Francis Group.","Biomechanics; continuous analysis; football; kicking cues; movement pattern","Biomechanical Phenomena; Female; Hip; Humans; Knee Joint; Male; Principal Component Analysis; Soccer; adult; article; biomechanics; controlled study; correlation coefficient; female; football; hip; human; kinematics; knee angle; male; principal component analysis; rotation; soccer; soccer player; time series analysis; velocity; waveform; biomechanics; hip; knee; principal component analysis; soccer","Ball K., Biomechanical considerations of distance kicking in Australian Rules football, Sports Biomechanics, 7, 1, pp. 10-23, (2008); Barbieri F.A., Bucken Gobbi L.T., Pereira Santiago P.R., Augusto Cunha S., Dominant–non-dominant asymmetry of kicking a stationary and rolling ball in a futsal context, Journal of Sports Sciences, 33, 13, pp. 1411-1419, (2015); Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, Journal of Sports Science & Medicine, 1, pp. 72-79, (2002); Boyne M., Simms C., van Dyk N., Farrell G., Farrell E., McHugh C., Wall J., Mockler D., Wilson F., It’s not all about power: A systematic review and meta-analysis comparing sex-based differences in kicking biomechanics in soccer, Sports Biomechanics, pp. 1-44, (2021); Brandon S.C.E., Graham R.B., Almosnino S., Sadler E.M., Stevenson J.M., Deluzio K.J., Interpreting principal components in biomechanics: Representative extremes and single component reconstruction, Journal of Electromyography and Kinesiology, 23, 6, pp. 1304-1310, (2013); Brophy R.H., Backus S., Kraszewski A.P., Steele B.C., Ma Y., Osei D., Williams R.J., Differences between sexes in lower extremity alignment and muscle activation during soccer kick, JBJS, 92, 11, pp. 2050-2058, (2010); Brophy R.H., Backus S.I., Pansy B.S., Lyman S., Williams R.J., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, Journal of Orthopaedic and Sports Physical Therapy, 37, 5, pp. 260-268, (2007); Charnock B.L., Lewis C.L., Garrett J.W.E., Queen R.M.J.S.B., Adductor longus mechanics during the maximal effort soccer kick, Sports Biomechanics, 8, 3, pp. 223-234, (2009); Deluzio K.J., Astephen J.L., Biomechanical features of gait waveform data associated with knee osteoarthritis: An application of principal component analysis, Gait & Posture, 25, 1, pp. 86-93, (2007); Dorge H.C., Bull-Andersen T., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, Journal of Sports Sciences, 20, 8, pp. 293-299, (2002); Duhig S.J., Williams M.D., Minett G.M., Opar D., Shield A.J., Drop punt kicking induces eccentric knee flexor weakness associated with reductions in hamstring electromyographic activity, Journal of Science and Medicine in Sport, 20, 6, pp. 595-599, (2017); Escamilla R.F., Andrews J.R., Shoulder muscle recruitment patterns and related biomechanics during upper extremity sports, Sports Medicine, 39, 7, pp. 569-590, (2009); Floria P., Sanchez-Sixto A., Harrison A.J., Application of the principal component waveform analysis to identify improvements in vertical jump performance, Journal of Sports Sciences, 37, 4, pp. 370-377, (2019); Gloersen O., Myklebust H., Hallen J., Federolf P., Technique analysis in elite athletes using principal component analysis, Journal of Sports Sciences, 36, 2, pp. 229-237, (2018); Juarez D., Lopez D.S., Mallo C., Navarro E., Acute effects of endurance exercise on jumping and kicking performance in top-class young soccer players, European Journal of Sport Sciences, 11, 3, pp. 191-196, (2011); Katis A., Kellis E., Lees A., Age and gender differences in kinematics of powerful instep kicks in soccer, Sports Biomechanics, 14, 3, pp. 287-299, (2015); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Science & Medicine, 6, pp. 154-165, (2007); Kipp K., Harris C., Patterns of barbell acceleration during the snatch in weightlifting competition, Journal of Sports Sciences, 33, 14, pp. 1467-1471, (2015); Knudson D.V., Fundamentals of biomechanics, (2007); Kubayi A., Toriola A., Trends of goal scoring patterns in soccer: A retrospective analysis of five successive FIFA World Cup tournaments, Journal of Human Kinetics, 69, 1, (2019); Lees A., Biomechanics applied to soccer skills, Science and Soccer, pp. 218-223, (2013); Lees A., Asai T., Bull-Andersen T., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, 8, pp. 805-817, (2010); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, 3, pp. 211-234, (1998); Lees A., Nolan L., Three Dimensional kinetic analysis of the instep kick under speed and accuracy conditions, Science and football IV, pp. 16-21, (2002); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, 6, pp. 917-927, (1998); Lyle M.A., Sigward S.M., Tsai L.C., Pollard C.D., Powers C.M., Influence of maturation on instep kick biomechanics in female soccer athletes, Medicine and Science in Sports and Exercise, 43, 10, pp. 1948-1954, (2011); Navandar A., Veiga S., Garcia C., Rueda J., Torres G., Chorro D., Navarro E., Gender effects on limb dominance in kicking biomechanics in elite soccer players, 34th International Conference on the Biomechanics of Sport, (2016); Navandar A., Veiga S., Torres G., Chorro D., Navarro E., A previous hamstring injury affects kicking mechanics in soccer players, Journal of Sports Medicine and Physical Finess, 58, 12, (2018); Neumann D.A., Kinesiology of the Hip: A focus on muscular actions, Journal of Orthopaedic and Sports Physical Therapy, 40, 2, pp. 82-94, (2010); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, 12, pp. 2028-2036, (2002); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 24, 5, pp. 529-541, (2006); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of the instep kick in soccer, Journal of Sports Sciences, 24, 1, pp. 11-22, (2006); O'Connor K.M., Bottum M.C., Differences in cutting knee mechanics based on principal components analysis, Medicine and Science in Sports and Exercise, 41, 4, pp. 867-878, (2009); Reid M., Elliott B., Alderson J., Shoulder joint loading in the high performance flat and kick tennis serves, British Journal of Sports Medicine, 41, 12, pp. 884-889, (2007); Ruscello B., Esposito M., Siligato G., Lunetta L., Marcelli L., Pantanella L., Gabrielli P.R., D'Ottavio S., Gender differences in instep soccer kicking biomechanics, investigated through a 3D human motion tracker system, The Journal of Sports Medicine and Physical Fitness, 60, 8, pp. 1072-1080, (2020); Sakamoto K., Asai T., Comparison of kicking motion characteristics at ball impact between female and male soccer players, International Journal of Sports Science & Coaching, 8, 1, pp. 63-76, (2013); Sakamoto K., Geisler G., Nakayama M., Asai T., Kinematics of the foot joint in female soccer players during the ball impact phase of kicking, Procedia Engineering, 2, 2, pp. 2549-2554, (2010); Shan G., Influence of gender and experience on the maximal instep soccer kick, European Journal of Sport Science, 9, 2, pp. 107-114, (2009); Shan G., Westerhoff P., Full-body Kinematic Characteristics of the Maximal Instep Soccer Kick by Male Soccer Players and Parameters Related to Kick Quality, Sports Biomechanics, 4, 1, pp. 59-72, (2005); Sinclair J., Fewtrell D., Taylor P.J., Atkins S., Bottoms L., Hobbs S.J., Three-dimensional kinematic differences between the preferred and non-preferred limbs during maximal instep soccer kicking, Journal of Sports Sciences, 32, 20, pp. 1914-1923, (2014); Smith T., Gilleard W., Three-dimensional analysis of a lofted instep kick by male and female footballers, European Journal of Sport Science, 16, 1, pp. 57-64, (2016); van den Tillaar R., Ulvik A., Influence of instruction on velocity and accuracy in soccer kicking of experienced soccer players, Journal of Motor Behavior, 46, 5, pp. 287-291, (2014); Warmenhoven J., Bargary N., Liebl D., Harrison A., Robinson M.A., Gunning E., Hooker G., PCA of waveforms and functional PCA: A primer for biomechanics, Journal of Biomechanics, 116, (2021); Warmenhoven J., Cobley S., Draper C., Harrison A., Bargary N., Smith R., Considerations for the use of functional principal components analysis in sports biomechanics: Examples from on-water rowing, Sports Biomechanics, 18, 3, pp. 317-341, (2019); Woltring H., On optimal smoothing and derivate estimation from noisy displacement data in biomechanics, Human Movement Science, 4, 3, pp. 229-245, (1985)","A. Navandar; Universidad Europea de Madrid, Madrid, Spain; email: archit89@gmail.com","","Routledge","02640414","","JSSCE","36074936","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85138313763" "Dalvandpour N.; Zareei M.; Abbasi H.; Abdoli B.; Mohammadian M.A.; Rommers N.; Rössler R.","Dalvandpour, Nazanin (58079608200); Zareei, Mostafa (57200677685); Abbasi, Hamed (57201521775); Abdoli, Behrouz (26653953900); Mohammadian, Mohammad A. (57219197076); Rommers, Nikki (56989900500); Rössler, Roland (55840185200)","58079608200; 57200677685; 57201521775; 26653953900; 57219197076; 56989900500; 55840185200","Focus of Attention During ACL Injury Prevention Exercises Affects Improvements in Jump-Landing Kinematics in Soccer Players: A Randomized Controlled Trial","2023","Journal of Strength and Conditioning Research","37","2","","337","342","5","1","10.1519/JSC.0000000000004201","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146916057&doi=10.1519%2fJSC.0000000000004201&partnerID=40&md5=8decf0228d2efb843128fa00be9bbc27","Department of Sport Rehabilitation and Health, Faculty of Sport Sciences and Health, Shahid Beheshti University, Tehran, Iran; Department of Sport Injuries and Corrective Exercises, Sport Sciences Research Institute, Tehran, Iran; Department of Behavioral and Cognitive Sciences in Sport, Faculty of Sport Sciences and Health, Shahid Beheshti University, Tehran, Iran; School of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran; Department of Movement and Sport Sciences, Vrije Universiteit Brussel, Brussels, Belgium; Department of Clinical Research, Clinical Trial Unit, University Hospital Basel, Basel, Switzerland; Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland","Dalvandpour N., Department of Sport Rehabilitation and Health, Faculty of Sport Sciences and Health, Shahid Beheshti University, Tehran, Iran; Zareei M., Department of Sport Rehabilitation and Health, Faculty of Sport Sciences and Health, Shahid Beheshti University, Tehran, Iran; Abbasi H., Department of Sport Injuries and Corrective Exercises, Sport Sciences Research Institute, Tehran, Iran; Abdoli B., Department of Behavioral and Cognitive Sciences in Sport, Faculty of Sport Sciences and Health, Shahid Beheshti University, Tehran, Iran; Mohammadian M.A., School of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran; Rommers N., Department of Movement and Sport Sciences, Vrije Universiteit Brussel, Brussels, Belgium, Department of Clinical Research, Clinical Trial Unit, University Hospital Basel, Basel, Switzerland; Rössler R., Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland","Anterior cruciate ligament tears are severe and complex knee injuries that commonly occur in soccer. Prevent injuries enhance performance (PEP) is an exercise-based prevention program to effectively reduce anterior cruciate ligament injuries. It is, however, unclear how the delivery of the program contributes to its effectiveness. Therefore, we aimed to investigate the effect of the focus of attention that was emphasized during the delivery of the PEP program on jump-landing kinematics in male, elite-level, U21 soccer players. Forty-two players participated in this randomized controlled trial and were allocated to (a) the internal focus of attention (IF) group, receiving instructions focusing on the execution of the exercise (b), the external focus of attention (EF) group, receiving instructions focusing on the outcome of the exercise, or (c) the control group. Before and after the 8-week intervention, players performed a jump-landing task during which we measured hip and knee angles at the initial contact, peak knee flexion, and peak vertical ground reaction force using a 3-dimensional motion analyzer. A repeated-measures analysis of variance was used to compare groups over time. Significant time-by-group interaction effects with large effect sizes were found for hip flexion at all moments (p < 0.032; η2> 0.15) and for the knee flexion angle at initial contact and maximum knee flexion (p < 0.001; η2> 0.35), all in favor of the EF group. This shows that EF during PEP improves hip and knee joint kinematics in the sagittal plane more than IF. Therefore, EF during PEP instructions is preferred to increase the effectiveness of this injury prevention program. © 2023 NSCA National Strength and Conditioning Association. All rights reserved.","anterior cruciate ligament; biomechanics; effectiveness; football; intervention; knee injury; youth","Anterior Cruciate Ligament Injuries; Attention; Biomechanical Phenomena; Humans; Knee Joint; Male; Soccer; anterior cruciate ligament injury; attention; biomechanics; controlled study; human; injury; knee; male; randomized controlled trial; soccer","Alentorn-Geli E., Mendiguchia J., Samuelsson K., Et al., Prevention of non-contact anterior cruciate ligament injuries in sports. Part II: Systematic review of the effectiveness of prevention programmes in male athletes, Knee Surg Sports Traumatol Arthrosc, 22, pp. 16-25, (2014); Alentorn-Geli E., Myer G.D., Silvers H.J., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: Mechanisms of injury and underlying risk factors, Knee Surg Sports Traumatol Arthrosc, 17, pp. 705-729, (2009); Alentorn-Geli E., Myer G.D., Silvers H.J., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 2: A review of prevention programs aimed to modify risk factors and to reduce injury rates, Knee Surg Sports Traumatol Arthrosc, 17, pp. 859-879, (2009); Ali N., Robertson D.G., Rouhi G., Sagittal plane body kinematics and kinetics during single-leg landing from increasing vertical heights and horizontal distances: Implications for risk of non-contact ACL injury, Knee, 21, pp. 38-46, (2014); Benjaminse A., Gokeler A., Dowling A.V., Et al., Optimization of the anterior cruciate ligament injury prevention paradigm: Novel feedback techniques to enhance motor learning and reduce injury risk, J Orthop Sports Phys Ther, 45, pp. 170-182, (2015); Benjaminse A., Otten E., ACL injury prevention, more effective with a different way of motor learning?, Knee Surg Sports Traumatol Arthrosc, 19, pp. 622-627, (2011); Benjaminse A., Welling W., Otten B., Gokeler A., Novel methods of instruction in ACL injury prevention programs, a systematic review, Phys Ther Sport, 16, pp. 176-186, (2015); Chaudhari A.M., Andriacchi T.P., The mechanical consequences of dynamic frontal plane limb alignment for non-contact ACL injury, J Biomech, 39, pp. 330-338, (2006); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (1988); Davis R.B., Ounpuu S., Tyburski D., Gage J.R., A gait analysis data collection and reduction technique, Human Mov Sci, 10, pp. 575-587, (1991); Donnelly C.J., Elliott B.C., Ackland T.R., Et al., An anterior cruciate ligament injury prevention framework: Incorporating the recent evidence, Res Sports Med, 20, pp. 239-262, (2012); Ericksen H.M., Gribble P.A., Pfile K.R., Pietrosimone B.G., Different modes of feedback and peak vertical ground reaction force during jump landing: A systematic review, J Athl Train, 48, pp. 685-695, (2013); Frank B.S., Register-Mihalik J., Padua D.A., High levels of coach intent to integrate a ACL injury prevention program into training does not translate to effective implementation, J Sci Med Sport, 18, pp. 400-406, (2015); Fransz D.P., Huurnink A., De Boode V.A., Kingma I., Van Dieen J.H., Time series of ground reaction forces following a single leg drop jump landing in elite youth soccer players consist of four distinct phases, Gait Posture, 50, pp. 137-144, (2016); Gagnier J.J., Morgenstern H., Chess L., Interventions designed to prevent anterior cruciate ligament injuries in adolescents and adults: A systematic review and meta-analysis, Am J Sports Med, 41, pp. 1952-1962, (2013); Gilchrist J., Mandelbaum B.R., Melancon H., Et al., A randomized controlled trial to prevent noncontact anterior cruciate ligament injury in female collegiate soccer players, Am J Sports Med, 36, pp. 1476-1483, (2008); Gokeler A., Benjaminse A., Welling W., Et al., The effects of attentional focus on jump performance and knee joint kinematics in patients after ACL reconstruction, Phys Ther Sport, 16, pp. 114-120, (2015); Griffin L.Y., Agel J., Albohm M.J., Et al., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, J Am Acad Orthop Surg, 8, pp. 141-150, (2000); Hargrave M.D., Carcia C.R., Gansneder B.M., Shultz S.J., Subtalar pronation does not influence impact forces or rate of loading during a single-leg landing, J Athl Train, 38, pp. 18-23, (2003); Hootman J.M., MacEra C.A., Ainsworth B.E., Et al., Epidemiology of musculoskeletal injuries among sedentary and physically active adults, Med Sci Sports Exerc, 34, pp. 838-844, (2002); Lephart S.M., Ferris C.M., Riemann B.L., Myers J.B., Fu F.H., Gender differences in strength and lower extremity kinematics during landing, Clin Orthop Relat Res, 401, pp. 162-169, (2002); Mandelbaum B.R., Silvers H.J., Watanabe D.S., Et al., Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes: 2-year follow-up, Am J Sports Med, 33, pp. 1003-1010, (2005); Moore I.S., Phillips D.J., Ashford K.J., Et al., An interdisciplinary examination of attentional focus strategies used during running gait retraining, Scand J Med Sci Sports, 29, pp. 1572-1582, (2019); Myer G.D., Ford K.R., Brent J.L., Hewett T.E., The effects of plyometric vs. dynamic stabilization and balance training on power, balance, and landing force in female athletes, J Strength Cond Res, 20, pp. 345-353, (2006); Myer G.D., Ford K.R., Brent J.L., Hewett T.E., An integrated approach to change the outcome part II: Targeted neuromuscular training techniques to reduce identified ACL injury risk factors, J Strength Cond Res, 26, pp. 2272-2292, (2012); Padua D.A., DiStefano L.J., Hewett T.E., Et al., National Athletic Trainers' Association position statement: Prevention of anterior cruciate ligament injury, J Athl Train, 53, pp. 5-19, (2018); Pollard C.D., Sigward S.M., Ota S., Langford K., Powers C.M., The influence of in-season injury prevention training on lower-extremity kinematics during landing in female soccer players, Clin J Sport Med, 16, pp. 223-227, (2006); Powers C.M., The influence of abnormal hip mechanics on knee injury: A biomechanical perspective, J Orthop Sports Phys Ther, 40, pp. 42-51, (2010); Robertson G.E., Caldwell G.E., Hamill J., Kamen G., Whittlesey S., Research Methods in Biomechanics, (2013); Sugimoto D., Alentorn-Geli E., Mendiguchia J., Et al., Biomechanical and neuromuscular characteristics of male athletes: Implications for the development of anterior cruciate ligament injury prevention programs, Sports Med, 45, pp. 809-822, (2015); Wulf G., McNevin N., Shea C.H., The automaticity of complex motor skill learning as a function of attentional focus, Q J Exp Psychol A, 54, pp. 1143-1154, (2001); Wulf G., Prinz W., Directing attention to movement effects enhances learning: A review, Psychon Bull Rev, 8, pp. 648-660, (2001)","M. Zareei; Department of Sport Rehabilitation and Health, Faculty of Sport Sciences and Health, Shahid Beheshti University, Tehran, Iran; email: M_zareei@sbu.ac.ir","","NSCA National Strength and Conditioning Association","10648011","","","36696258","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-85146916057" "Ponce E.; Pérez J.; Ponce D.; Andresen M.","Ponce, Ernesto (23397848600); Pérez, Jesús (57219333553); Ponce, Daniel (23398127100); Andresen, Max (7006666435)","23397848600; 57219333553; 23398127100; 7006666435","Mathematical simulation of mild brain injury in children heading soccer balls; [Traumas cerebrales en niños secundarios a cabeceo de balones en fútbol. Modelo de simulación matemática]","2011","Revista Medica de Chile","139","8","","1089","1096","7","1","10.4067/S0034-98872011000800017","https://www.scopus.com/inward/record.uri?eid=2-s2.0-80055087099&doi=10.4067%2fS0034-98872011000800017&partnerID=40&md5=f087a436f2006a9da74176c92f1587f7","Escuela Ingeniería Mecánica, Universidad de Tarapacá, Chile; Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, Spain; Departamento Engenharia Mecanica, Universidade Federal de Santa Catarina, Florianópolis SC, Brazil; Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile","Ponce E., Escuela Ingeniería Mecánica, Universidad de Tarapacá, Chile; Pérez J., Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, Spain; Ponce D., Departamento Engenharia Mecanica, Universidade Federal de Santa Catarina, Florianópolis SC, Brazil; Andresen M., Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile","Background: Heading professional soccer balls can generate mild traumatic brain injury in children. The long-term consequences could include difficulty in solving problems and deficits in memory and language. Aim: To assess the impact of a professional adult soccer ball on a child's head, using the finite element method and dynamic effects to predict brain damage. Material and Methods: The minimum conditions of an adult game were considered: the ball speed was 6 m/s and the diffuse blow was 345 and 369 Newtons (N), on the forehead and top of the head, respectively. A head was modeled in order to know the stresses, strains and displacements generated by the impacts. The extent of the alteration was determined by comparing the strength of brain tissue, with predictions of computed stresses. The geometric characteristics of the head were transferred from medical images. The input data of the materials of a child's head was obtained from the literature. Results: In the case of heading with the forehead, mathematical simulation showed frontal lobe alterations, with brain stresses between 0.064 and 0.059 N/mm 2. When the heading was with the upper head zone, the brain alterations were in the parietal lobe, with stresses between 0.089 and 0.067 N/mm 2. In the cerebral spinal f uid the pressure was 3.61 to 3.24 N/mm 2. Conclusions: The mathematical simulations reveal evidence of brain alterations caused by a child heading adult soccer balls. The model presented is an economical and quick tool that can help predict brain damage. It demonstrates the ability of the cerebral spinal fluid (CSF) to absorb shock loads.","Brain injuries; Models; Soccer; Theoretical","Biomechanics; Brain Injuries; Child, Preschool; Finite Element Analysis; Head Injuries, Closed; Humans; Medical Illustration; Models, Neurological; Play and Playthings; Soccer; article; biological model; biomechanics; brain injury; classification; finite element analysis; head injury; human; injury; medical illustration; physiology; preschool child; recreation; sport","Heading the Ball in Soccer: What's the Risk of Brain Injury?, The Physician and Sports Medicine, 26, (1998); The Human Brain, (2005); Meyer F., Roth S., Willinger R., Three years old child head-neck finite element modeling: Simulation of the interaction with airbag in frontal and side impact, Int J of Vehicle Safety, 4, 4, pp. 285-299, (2010); Withnall C., Schewchenko N., Gittens R., Dvorak J., Bio-mechanics investigation of head impacts in football, Br J Sports Med, 39, (2005); McClory P., Brain injury and heading in soccer, BMJ, 327, pp. 351-352, (2003); Matzer E., Kessels A., Lezak M., Jordan B., Troot J., Neuro-psychological Impairments in Amateurs Soccer Players, JAMA, 282, pp. 971-973, (1999); Tysvaer A., Storli O., Bachen N., Soccer injuries to the brain. A neurological and electroencephalographic study of former players, Acta Neurol, 80, pp. 151-156, (1989); Anderson S., Griesemet B., Johnson M., Thomas J., Martin T., McLain L., Et al., Injuries in youth soccer: A subject review, Pediatrics, 105, pp. 659-661, (2000); Janda D., Bir C., Cheney A., An evaluation of the cumulative effect of soccer heading in the youth population, Inj Control Saf Promot, 9, pp. 25-31, (2002); Willinger R., Kang H.-S., Diaw B., Tree-Dimensional Human Head Finite-Element Model Validation Against Two Experimental Impacts, Annals of Biomedical Engineering, 27, pp. 403-410, (1999); Raul J., Deck C., Willinger R., Finite-element models of the human head and their applications in forensic practice, Int J Legal Med, 122, pp. 359-366, (2008); Voo L., Kumaresan S., Pintar F., Yoganandan N., Sances A., Finite-element models of the human head, Med & Biol Eng & Comput, 34, pp. 375-381, (1996); Belingardi G., Chiandussi G., Gaviglio I., Development and Validation of a New Finite Element Model of Human Head, Proceedings 19th ESV (Enhanced Safety On Vehicles), (2005); Horgan T., Gilchrist M., The creation of three-dimensional fi nite element models for simulating head impacts biomechanics, IJ Crash, 8, 4, pp. 353-365, (2003); Kleiven S., Hardy W., Correlation of an FE model of human head with local brain motion-consequences for injury predictions. In: SAE paper, Proceedings 46th Stapp Crash Conference, pp. 123-144, (2002); Yue X., Wang L., Viscoelastic finite element analysis of human skull-dura mater system as intercranial pressure changing, African J of Biotech Academic Journals, 7, 6, pp. 689-695, (2008); Cazon A., Suescun A., A head-neck biomechanical model of 6 years old child for frontal crash studies, Int J of Vehicle Safety, 4, pp. 257-270, (2009); Roth S., Vappou J., Raul J., Willinger R., Child head injury criteria investigation though numerical simulation of real world trauma, Computers Methods and Programs In Biomedicine, 9, 1, pp. 32-45, (2008); Gurdjian E.S., Lissner H.R., Evans F.G., Patrick L.M., Hardy W.G., Intracranial pressure and accelerations accompanying heads impacts in human cadavers, Sur Gynecol Obstret, 113, pp. 185-190, (1961); Keatures C., Gregory A., Injuries in youth soccers, Pediatrics, 125, pp. 410-414, (2010); Yong F., Tianzi J., Volumetric Segmentation of Brain Images Using Parallel Genetic Algorithms, IEEE Transactions On Medical Imaging, 21, 8, pp. 904-909, (2002); Pitiot A., Bardinet E., Thompson P., Malandain G., Piecewise Affine Registration of Biological Images for Volume Reconstruction, Medical Image Analysis, 3, 3, pp. 465-483, (2006); Actual Human Brain Dissection Images; Khalil T., Hubbard P., Parametric study of head response by finite element modeling, J of Biomechanics, 10, pp. 119-132, (1977); Miller K., Chinzei K., Constitutive modeling of brain tissue, Experiment and Theory, 11, 12, pp. 1115-1121, (1997); Sklar F., Elashvili I., The pressure-volume function of brain elasticity. Physiological consideration and clinical applications, Journal of Neurosurg, 47, 5, pp. 670-679, (1977); Antich P., Anderson J., Ashman R., Dowley J., Gonzalez J., Et al., Measurements of mechanical properties of bone material in vitro by ultrasound reflection: Methodology and comparison with ultrasound transmission, Journal of Bone Miner Res, 3, pp. 417-426, (1991); Torres H., Zamorano M., SAR Simulation of Chiral Waves in a Head model, Rev Facing, 1, 9, pp. 3-19, (2001); Chen Y., Ostoja-Starzewsky M., MRI-Based Finite Element Modelling of Head Trauma: Spherically Focusing Shear Waves, Act Mech, (2010); Finite Element Analysis in Practice, Instructor Manual, (2005); Shewchenko N., Withnall C., Keown M., Gittens R., Dvorak J., Heading in football: Part 1: Development of biomechanics methods to investigate head response, Br J Sports Med, 39, (2005); Ponce E., Ponce D., FEM 2D Analysis of Mild Traumatic Brain Injury on a Child, Pattern Recognition and Machine Intelligence, 4815, pp. 186-191, (2007); The Human Brain (2005)","E. Ponce; Universidad de Tarapacá, 2222 Arica, 18 de Septiembre, Chile; email: eponce@uta.cl","","","07176163","","","22215342","English","Rev. Med. Chile","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-80055087099" "Liu S.; Yan H.; Wang Z.; Zhang Y.; Johnson R.S.; Wei S.; Pan J.","Liu, Shuangen (58608600900); Yan, Hui (57786343200); Wang, Zhikang (57216657439); Zhang, Yifang (58609106900); Johnson, Rachel S. (57209180992); Wei, Shutao (44062008500); Pan, Jiahao (56735022700)","58608600900; 57786343200; 57216657439; 58609106900; 57209180992; 44062008500; 56735022700","Effects of shoe collar types on ankle and knee biomechanics characteristics when performing the side-step cutting task","2023","Sports Biomechanics","","","","","","","1","10.1080/14763141.2023.2249860","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85171763131&doi=10.1080%2f14763141.2023.2249860&partnerID=40&md5=22dd7687e7c6b91b6cefa81896695a73","College of Physical Education, Jinzhong University, Jinzhong, China; Center for Research & Innovation, 316º(CHINA) CO. LTD, Xiamen, China; Center for Orthopaedic & Biomechanics Research, Boise State University, Boise, ID, United States","Liu S., College of Physical Education, Jinzhong University, Jinzhong, China; Yan H., College of Physical Education, Jinzhong University, Jinzhong, China; Wang Z., Center for Research & Innovation, 316º(CHINA) CO. LTD, Xiamen, China; Zhang Y., Center for Research & Innovation, 316º(CHINA) CO. LTD, Xiamen, China; Johnson R.S., Center for Orthopaedic & Biomechanics Research, Boise State University, Boise, ID, United States; Wei S., Center for Research & Innovation, 316º(CHINA) CO. LTD, Xiamen, China; Pan J., Center for Orthopaedic & Biomechanics Research, Boise State University, Boise, ID, United States","This study aimed to examine the effect of football shoes with different collar types on ankle and knee kinematic and kinetics features during 45° and 135° side-step cutting tasks. Fifteen healthy college football players volunteered for the study. Each participant was instructed to perform side-step cutting tasks with high, low, and no collar football shoes. The kinematic and ground reaction force data were measured using a Vicon motion capture system and a Kistler force plate, respectively. Two-way MANOVAs with repeated measures were used to examine the effect of shoe collar type and task conditions. There were no interaction effects. The high collar football shoe showed decreased ankle range of motion in the sagittal plane (p = 0.010) and peak ankle external rotation moment (p = 0.009) compared to the no collar football shoe. The high (p = 0.025) and low (p = 0.029) collar football shoes presented greater peak ankle external rotation angles than the no collar football shoe. These results imply that football shoes with high collars made of high intensity knitted fabric could be used to restrict ankle joint movement, with potential implications for decreasing the risk of ankle sprain injuries in football players. © 2023 International Society of Biomechanics in Sports.","football; High-top; kinematics; kinetics; soccer","","Andrews J.R., Mcleod W.D., Ward T., Howard K., The cutting mechanism, The American Journal of Sports Medicine, 5, 3, pp. 111-121, (1977); Anne M., Nigg B.M., Humble R.N., Stefanyshyn D.J., Foot orthotics affect lower extremity kinematics and kinetics during running, Clinical Biomechanics, 18, 3, pp. 254-262, (2003); FIFA big count 2006: 270 million people active in football, (2007); Beijsterveldt A.M.C.V., Krist M.R., Risk factors for injuries in football, American Journal of Sports Medicine, 32, 1, pp. 5S-16, (2004); Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in FA premier league soccer, Journal of Sports Science & Medicine, 6, 1, (2007); 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Dempsey A.R., Elliott B.C., Munro B.J., Steele J.R., Lloyd D.G., Can technique modification training reduce knee moments in a landing task?, Journal of Applied Biomechanics, 30, 2, pp. 231-236, (2014); Dos'santos T., McBurnie A., Thomas C., Comfort P., Jones P.A., Biomechanical comparison of cutting techniques: A review and practical applications, Strength & Conditioning Journal, 41, 4, pp. 40-54, (2019); Fong D.T., Chan Y.-Y., Mok K.-M., Yung P.S., Chan K.-M., Understanding acute ankle ligamentous sprain injury in sports, BMC Sports Science, Medicine and Rehabilitation, 1, 1, pp. 1-14, (2009); Fong T.P., Hong Y., Chan L.K., Yung S.H., Chan K.M., A systematic review on ankle injury and ankle sprain in Sports, Sports Medicine, 37, 1, pp. 73-94, (2007); Fong D.T.P., Hong Y., Shima Y., Krosshaug T., Yung P.S.H., Chan K.-M., Biomechanics of supination ankle sprain: A case report of an accidental injury event in the laboratory, The American Journal of Sports Medicine, 37, 4, pp. 822-827, (2009); 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Wetters N., Weber A.E., Wuerz T.H., Schub D.L., Mandelbaum B.R., Mechanism of injury and risk factors for anterior cruciate ligament injury, Operative Techniques in Sports Medicine, 24, 1, pp. 2-6, (2016); Wikstrom E.A., Naik S., Lodha N., Cauraugh J.H., Bilateral balance impairments after lateral ankle trauma: A systematic review and meta-analysis, Gait & Posture, 31, 4, pp. 407-414, (2010); Wright I., Neptune R.R., van den Bogert A.J., Nigg B., The influence of foot positioning on ankle sprains, Journal of Biomechanics, 33, 5, pp. 513-519, (2000); Yang Z., Cui C., Wan X., Zheng Z., Yan S., Liu H., Qu F., Zhang K., Design feature combinations effects of running shoe on plantar pressure during heel landing: A finite element analysis with Taguchi optimization approach, Frontiers in Bioengineering and Biotechnology, 10, (2022); Yang Y., Fang Y., Zhang X., He J., Fu W., Does shoe collar height influence ankle joint kinematics and kinetics in sagittal plane maneuvers?, Journal of Sports Science & Medicine, 16, 4, (2017); Zhang S., Pan J., Li L., Non-linear changes of lower extremity kinetics prior to gait transition, Journal of Biomechanics, 77, pp. 48-54, (2018)","J. Pan; Center for Orthopaedic & Biomechanics Research, Boise State University, Boise, United States; email: jiahaopan@u.boisestate.edu","","Routledge","14763141","","","","English","Sports Biomech.","Article","Article in press","","Scopus","2-s2.0-85171763131" "Marotti F.; Polacco A.","Marotti, F. (57210619087); Polacco, A. (35132544100)","57210619087; 35132544100","Upper limb's chronic lesions of the goal-keeper; [LESIONS CHRONIQUES DU MEMBRE SUPERIEUR CHEZ LE GARDIEN DE BUT DE FOOTBALL]","1983","Acta Orthopaedica Belgica","49","1-2","","203","212","9","1","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0020690093&partnerID=40&md5=7c85585517a089a6bb2d3dd36a1c311a","Switzerland","Marotti F., Switzerland; Polacco A., Switzerland","[No abstract available]","","Adolescent; Adult; Athletic Injuries; Biomechanics; English Abstract; Forearm Injuries; Human; Male; Middle Age; Soccer; Sports; arm injury; diagnosis; elbow injury; human; injury; joint; ligament; major clinical study; musculoskeletal system; sport; sport injury; adolescent; adult; arm injury; article; biomechanics; male; pathophysiology; sport injury","","","","","00016462","","AOBEA","6868981","French","ACTA ORTHOP. BELG.","Article","Final","","Scopus","2-s2.0-0020690093" "Rites A.A.; Merino-Muñoz P.; Ribeiro F.; Miarka B.; Salermo V.; Gomes D.V.; Brito C.J.; Aedo-Muñoz E.","Rites, Alex Ambrosio (57218565525); Merino-Muñoz, Pablo (57221328367); Ribeiro, Fabiano (58812358500); Miarka, Bianca (37081636300); Salermo, Veronica (58812078000); Gomes, Diego Viana (57194653362); Brito, Ciro José (37058458300); Aedo-Muñoz, Esteban (57202025612)","57218565525; 57221328367; 58812358500; 37081636300; 58812078000; 57194653362; 37058458300; 57202025612","Effects of peppermint oil inhalation on vertical jump performance in elite young professional soccer players: A double-blinded randomized crossover study","2024","Heliyon","10","2","e24360","","","","0","10.1016/j.heliyon.2024.e24360","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85182370483&doi=10.1016%2fj.heliyon.2024.e24360&partnerID=40&md5=092199509f08e26ca65324d8277ad220","Postgraduate Program in Physical Education. Federal University of Rio de Janeiro, Brazil; Fluminense Football Club, Brazil; Núcleo de investigación en ciencias de la motricidad humana, Universidad Adventista de Chile, Chile; Escuela de Ciencias de la Actividad Física, el Deporte y la Salud, Facultad de Ciencias Médicas, Universidad de Santiago de Chile, Chile","Rites A.A., Postgraduate Program in Physical Education. Federal University of Rio de Janeiro, Brazil, Fluminense Football Club, Brazil; Merino-Muñoz P., Núcleo de investigación en ciencias de la motricidad humana, Universidad Adventista de Chile, Chile, Escuela de Ciencias de la Actividad Física, el Deporte y la Salud, Facultad de Ciencias Médicas, Universidad de Santiago de Chile, Chile; Ribeiro F., Fluminense Football Club, Brazil; Miarka B., Postgraduate Program in Physical Education. Federal University of Rio de Janeiro, Brazil; Salermo V., Postgraduate Program in Physical Education. Federal University of Rio de Janeiro, Brazil; Gomes D.V., Postgraduate Program in Physical Education. Federal University of Rio de Janeiro, Brazil; Brito C.J., Escuela de Ciencias de la Actividad Física, el Deporte y la Salud, Facultad de Ciencias Médicas, Universidad de Santiago de Chile, Chile; Aedo-Muñoz E., Escuela de Ciencias de la Actividad Física, el Deporte y la Salud, Facultad de Ciencias Médicas, Universidad de Santiago de Chile, Chile","Aims: To evaluate peppermint essential oil (PEO) inhalation's effect on young soccer athletes' motor performance. Methods: A randomized crossover design was used to test the effect of the PEO. Eleven U-17 soccer players were evaluated into two conditions (PEO and Placebo – PLA). The players were tested in squat jump and countermovement jump and inhaled PEO or PLA and 10 min later performed the physical tests again. A mixed ANOVA was performed to test the hypotheses. Results: Main effects were found for the time in jumping height in the CMJ (p = 0.037). No main and interaction effects were found in the SJ variables. Conclusion: From the results, decrease CMJ performance acutely, both conditions presented decrease in JH, but based in effect size, PLA decrease is higher (more sample size for corroborate this) possibly due to improvements in the eccentric yielding sub-phase, where mentioned phase could be reflecting neural changes (required experimental verification). The PEO could be the interest in trainers for use before of match or in the half-time for minimize the decreased of physical performance by the rest. © 2024","Aromatherapy; Biomechanics; Football; Kinetics; Nutrition; Physical performance; Physiology","","Dolci F., Hart N.H., Kilding A.E., Chivers P., Piggott B., Spiteri T., Physical and energetic demand of soccer: a brief review, Strength Cond J, 42, pp. 70-77, (2020); Rites A., Viana D., Merino-Munoz P., Miarka B., Aedomunoz E., Perez-contreras J., Salerno V.P., Do contextual factors, tournament level, and location affect external match load in elite Brazilian youth soccer players?, J Phys Ed Sport, 22, pp. 2898-2903, (2022); Bengtsson H., Ekstrand J., Walden M., Hagglund M., Muscle injury rate in professional football is higher in matches played within 5 days since the previous match: a 14-year prospective study with more than 130 000 match observations, Br. J. 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A Biochemical Indicator Test in Rats, Evid Based Complement Alternat Med 2017, (2017); Gobel H., Schmidt G., Soyka D., Effect of peppermint and eucalyptus oil preparations on neurophysiological and experimental algesimetric headache parameters, Cephalalgia, 14, pp. 228-234, (1994); Bartolomei S., Nigro F., Gubellini L., Semprini G., Ciacci S., Hoffman J.R., Merni F., Acute effects of ammonia inhalants on strength and power performance in trained men, J Strength Cond Res, 32, pp. 244-247, (2018); Malecek J., Tufano J.J., Effects of ammonia inhalants in humans: a review of the current literature regarding the benefits, risks, and efficacy, Strength Cond J, 43, pp. 76-86, (2021); Perry B.G., Pritchard H.J., Barnes M.J., Cerebrovascular, cardiovascular and strength responses to acute ammonia inhalation, Eur. J. Appl. Physiol., 116, pp. 583-592, (2016); Zhao H., Ren S., Yang H., Tang S., Guo C., Liu M., Tao Q., Ming T., Xu H., Peppermint essential oil: its phytochemistry, biological activity, pharmacological effect and application, Biomed. Pharmacother., 154, (2022); Meamarbashi A., Instant effects of peppermint essential oil on the physiological parameters and exercise performance, Avicenna J Phytomed, 4, (2014); Moss M., Hewitt S., Moss L., Wesnes K., Modulation of cognitive performance and mood by aromas of peppermint and ylang-ylang, Int. J. Neurosci., 118, pp. 59-77, (2008); Meamarbashi A., Rajabi A., The effects of peppermint on exercise performance, J Int Soc Sports Nut, 10, pp. 1-6, (2013); Harper D.J., Cohen D.D., Carling C., Kiely J., Can countermovement jump neuromuscular performance qualities differentiate maximal horizontal deceleration ability in team sport athletes?, Sports, 8, (2020); Merino-Munoz P., Vidal-Maturana F., Aedo-Munoz E., Villaseca-Vicuna R., Perez-Contreras J., Relationship between vertical jump, linear sprint and change of direction in Chilean female soccer players, J Phys Ed Sport, 21, pp. 2737-2744, (2021); Smajla D., Kozinc Z., Sarabon N., Associations between lower limb eccentric muscle capability and change of direction speed in basketball and tennis players, PeerJ, 10, (2022); Villaseca-Vicuna R., Molina-Sotomayor E., Zabaloy S., Gonzalez-Jurado J.A., Anthropometric profile and physical fitness performance comparison by game position in the Chile women's senior national football team, Appl. 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Sport Sci., 21, pp. 647-655, (2021); Barker L.A., Harry J.R., Mercer J.A., Relationships between countermovement jump ground reaction forces and jump height, reactive strength index, and jump time, J Strength Cond Res, 32, pp. 248-254, (2018); Cohen D.D., Restrepo A., Richter C., Harry J.R., Franchi M.V., Restrepo C., Poletto R., Taberner M., Detraining of specific neuromuscular qualities in elite footballers during COVID-19 quarantine, Sci Med Footb, 5, pp. 26-31, (2021); Lake J., Mundy P., Comfort P., McMahon J.J., Suchomel T.J., Carden P., Concurrent validity of a portable force plate using vertical jump force–time characteristics, J Applied Biomech, 34, pp. 410-413, (2018); Merino-Munoz P., Perez-Contreras J., Aedo-Munoz E., Bustamante-Garrido A., Relationship between jump height and rate of braking force development in professional soccer players, J Phys Ed Sport, 20, pp. 3614-3621, (2020); Barillas S.R., Oliver J.L., Lloyd R.S., Pedley J.S., Cueing the youth athlete during strength and conditioning: a review and practical application, Strength Cond J, 43, pp. 29-42, (2021); Harry J.R., Barker L.A., Paquette M.R., A joint power approach to define countermovement jump phases using force platforms, Med. Sci. Sports Exerc., 52, pp. 993-1000, (2020); Pupo J.D., Detanico D., Santos S.G.D., Kinetic parameters as determinants of vertical jump performance, Bras J Kinantrop, 14, pp. 41-51, (2012); Lakens D., Calculating and reporting effect sizes to facilitate cumulative science: a practical primer for t-tests and ANOVAs, Front. Psychol., 4, (2013); Hopkins W., Marshall S., Batterham A., Hanin J., Progressive statistics for studies in sports medicine and exercise science, Med. Sci. Sports Exerc., 41, (2009); Turner A., Brazier J., Bishop C., Chavda S., Cree J., Read P., Data analysis for strength and conditioning coaches: using excel to analyze reliability, differences, and relationships, Strength Cond J, 37, pp. 76-83, (2015); Trevethan R., Intraclass correlation coefficients: clearing the air, extending some cautions, and making some requests, Health Serv Outcomes Res Methodol, 17, pp. 127-143, (2017); Koo T.K., Li M.Y., A guideline of selecting and reporting intraclass correlation coefficients for reliability research, J Chiropr Med, 15, pp. 155-163, (2016); Shepherd K., Peart D.J., Aerobic capacity is not improved following 10-day supplementation with peppermint essential oil, Appl Physiol Nutr Metab, 42, pp. 558-561, (2017); Chiu L.Z., Daehlin T.E., Comparing numerical methods to estimate vertical jump height using a force platform, Meas Phy Ed Exerc Sci, 24, pp. 25-32, (2020); Rambo K., Boles E., Brent E., Silvers W.M., Effects of peppermint oil inhalation on vertical jump performance in ncaa division iii swimmers, Int. J. Exerc. Sci., 8, (2020); Kennedy D., Okello E., Chazot P., Howes M.-J., Ohiomokhare S., Jackson P., Haskell-Ramsay C., Khan J., Forster J., Et al., Volatile terpenes and brain function: investigation of the cognitive and mood effects of Mentha× Piperita L. essential oil with in vitro properties relevant to central nervous system function, Nutrients, 10, (2018); Soares G.A.B.E., Bhattacharya T., Chakrabarti T., Tagde P., Cavalu S., Exploring pharmacological mechanisms of essential oils on the central nervous system, Plants, 11, (2021); Van Hooren B., Zolotarjova J., The difference between countermovement and squat jump performances: a review of underlying mechanisms with practical applications, J Strength Cond Res, 31, pp. 2011-2020, (2017); Krzyszkowski J., Chowning L.D., Harry J.R., Phase-specific predictors of countermovement jump performance that distinguish good from poor jumpers, J Strength Cond Res, 36, pp. 1257-1263, (2022); Mittleman M.A., Mostofsky E., Exchangeability in the case-crossover design, Int. J. Epidemiol., 43, pp. 1645-1655, (2014); Behrens M., Gube M., Chaabene H., Prieske O., Zenon A., Broscheid K.-C., Schega L., Husmann F., Weippert M., Fatigue and human performance: an updated framework, Sports Med., 53, pp. 7-31, (2023)","C.J. Brito; Universidad de Santiago de Chile, Santiago, Avenida Libertador Bernardo O'Higgins nº 3363, Estación Central, Chile; email: ciro.brito@usach.cl","","Elsevier Ltd","24058440","","","","English","Heliyon","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85182370483" "Jacob M.; Chapuis D.","Jacob, M. (57197084999); Chapuis, D. (58428404200)","57197084999; 58428404200","Stress fracture of the patella; [Fracture de fatigue de la rotule]","2005","Journal de Traumatologie du Sport","22","1","","70","73","3","1","10.1016/s0762-915x(05)83191-2","https://www.scopus.com/inward/record.uri?eid=2-s2.0-17044375094&doi=10.1016%2fs0762-915x%2805%2983191-2&partnerID=40&md5=2ce82982de88d2cbc428ddc0082a5e0d","Football Club de Metz Ligue 1, 57006 Metz Cedex 1, 3 Allée Saint Symphorien, France","Jacob M., Football Club de Metz Ligue 1, 57006 Metz Cedex 1, 3 Allée Saint Symphorien, France; Chapuis D., Football Club de Metz Ligue 1, 57006 Metz Cedex 1, 3 Allée Saint Symphorien, France","Stress fracture of the patella is exceptional. We report an exceptional case observed in a professional soccer player in France. High-level athletes dedicated to high performance, constantly operate close to the upper limit of resistance. The risk is to exceed limits and reach the point of ""break down"", possibly lowered by aggravating or predisposing mechanical factors. These mechanical factors, which are usually unapparent or negligible in non-athletes, may, sooner or later, block progression of the champion's mechanical precision. In particular, excessive force training of the extensor system can cause an impressive level of patellar compression on the femur. The weak point can be the patella, the patellar ligament or both. Injury to the lower part of the patella (fracture) and of the upper part of the patellar ligament (tendontitis or tear): the weak point can be the patella, the patellar-ligament or the both. This can create a difficult situation where the appropriate surgical treatment is not clear. The frequency of this type of ""junction"" pathology can be expected to increase due to the increasing demands on modern soccer players. There is a real risk that this new pathology will have a serious impact on high-level athletes. (G. Saillant, E. Rolland - CHU La Pitié Salpêtrière - Paris). © Masson, Paris 2005.","Patella; Patellar-ligament; Sports activities; Stress fracture","article; athlete; biomechanics; case report; disease predisposition; extensor muscle; France; human; motor performance; muscle force; muscle training; patella fracture; patella ligament; risk factor; stress fracture","Devas M.B., Stress fractures of the patella, J. Bone Joint Surg., 42 B, pp. 71-74, (1960); Chaouat D., Les fractures de fatigue du sportif, Rev. Rhum., 65, (1998); Husson J.L., Certain J.L., Blouet J.M., Masse A., Fracture de stress de localisation exceptionnelle lors de la Pratique intensive du ski de fond. Pathogénie et déduction Thérapeutiques, Médecine Du Sport, 2, pp. 82-86, (1985); Doury P., Les fractures de fatigue on maladie de Pauzat, Rev. Prat., 36, pp. 2017-2026, (1986); Commandre F.A., Delarbre-Billard M., Aboulker C., Fournaris E., Les Fractures De Contrainte (ou « Stress Fracture »); Garcia Mata S., Hidalgo Ovejero A., Martinez Grande M., Transverse stress fracture of the patella in a child, J. Pediatr. Orthop., 8, pp. 208-211, (1999); Mata S.G., Grande M.M., Ovejero A.H., Transverse stress fracture of the patella: A case report, Clin. J. Sport Med., 6, pp. 259-261, (1996); Bernard J., Pathologie d'adaptation de l'os à l'effort: Douleurs osseuses d'effort et fractures de fatigue, Encycl. Med. Chir.; Rosenthal R.K., Levine D.B., Fragmentation of the distal pole of the patella in spastic cerebral palsy, J. Bone Joint Surg., 59 A, pp. 934-939, (1977); Orava S., Taimela S., Kvist M., Karpakka J., Hulk-Ko A., Kujula A., Diagnosis and treatment of stress fracture of the patella in athletes, Knee Surg. Sports Traumatol., 4, pp. 206-211, (1996); Teitz C.C., Harrington R.M., Patellar stress fracture, Am. J. Sports Med., 20, pp. 761-765, (1992); Hanel D.P., Burdge R.E., Consecutive indirect patella fractures in an adolescent basketball player a case report, Am. J. Sports Med., 9, pp. 327-329, (1981); Brogle P.J., Eswar S., Denton J.R., Propagation of a patellar stress fracture in a basketball player, Am. J. Orthop., 26, pp. 782-784, (1997); Manson R.W., Moore T.E., Walker C.W., Kathol M.H., Patellar fatigue fractures, Skeletal Radiol., 25, pp. 329-332, (1996); Jerosh J.G., Castro W.H.M., Jantea C., Stress fracture of the patella, Am. J. Sports Med., 17, pp. 579-580, (1989); Huberti R.H., Hayes W.C., Patellofemoral contact pressures the influence of Q-angle and tendofemoral contact, J. Bone Joint Surg., 66 A, pp. 715-724, (1984); Pietu G., Hauet P., Stress fracture of the patella, Acta Orthop. Scand., 66, pp. 481-482, (1995); Vesselle B., Etienne J.C., Schernberg F., Fracture de fatigue rotulienne, J. Traumatol. Sport, 19, pp. 45-50, (2002); Segal P., Jacob M., (1985)","M. Jacob; Football Club de Metz Ligue 1, 57006 Metz Cedex 1, 3 Allée Saint Symphorien, France; email: fcmetz@fcmetz.com","","Elsevier Masson SAS","0762915X","","JTSOA","","French","J. Traumatol. Sport","Article","Final","","Scopus","2-s2.0-17044375094" "Hunter A.H.; Pavlic T.P.; Angilletta M.J.; Wilson R.S.","Hunter, Andrew H. (56035848000); Pavlic, Theodore P. (6504516761); Angilletta, Michael J. (30267459000); Wilson, Robbie S. (7501532445)","56035848000; 6504516761; 30267459000; 7501532445","Identifying the best strategy for soccer penalty success: A predictive model for optimising behavioural and biomechanical trade-offs","2022","Journal of Biomechanics","141","","111208","","","","1","10.1016/j.jbiomech.2022.111208","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85133224701&doi=10.1016%2fj.jbiomech.2022.111208&partnerID=40&md5=eced990d2971f6eb3617ae5384bb6b95","School of Biological Sciences, The University of Queensland, St Lucia, 4072, QLD, Australia; School of Computing, Informatics and Augmented Intelligence, Arizona State University, United States; School of Sustainability, Arizona State University, United States; School of Complex Adaptive Systems, Arizona State University, United States; School of Life Sciences, Arizona State University, United States","Hunter A.H., School of Biological Sciences, The University of Queensland, St Lucia, 4072, QLD, Australia; Pavlic T.P., School of Computing, Informatics and Augmented Intelligence, Arizona State University, United States, School of Sustainability, Arizona State University, United States, School of Complex Adaptive Systems, Arizona State University, United States, School of Life Sciences, Arizona State University, United States; Angilletta M.J., School of Life Sciences, Arizona State University, United States; Wilson R.S., School of Biological Sciences, The University of Queensland, St Lucia, 4072, QLD, Australia","Success in a soccer penalty can be the difference between winning and losing matches. The outcome is determined by a complex interaction between the shooter and goalkeeper, whose performances are constrained by biomechanical trade-offs. To overcome these performance constraints, each player has a range of available strategies. Shooters can kick at different speeds, affecting accuracy, while goalkeepers can move at various times (leave-times), affecting the time available to move and the probability they move in the correct direction. Previous models of penalty success ignore such trade-offs and how they interact to influence the outcome. Here, we present a model that accounts for shooting inaccuracy to predict the probability of success for all shooting strategies, defined as any combination of: shot speed, position where the shooter aims, shooter footedness, and kicking technique (side-foot or instep). To estimate the probability of success each shooting strategy is matched against all possible goalkeeper leave-times, considering the probability each leave-time is chosen. We test the model against an average goalkeeper and a goalkeeper who tends to move later. Against the average goalkeeper, aiming on the ground toward the centre of the goal is optimal; however, against a late moving goalkeeper, aiming on the ground to the extremities of the goal is effective, with the optimal target in the horizontal dimension dependent on shot speed, kick technique, and footedness. Coaches could use this model to identify their best penalty takers and each players’ optimal shooting strategy against either the average goalkeeper or a specific goalkeeper. © 2022 Elsevier Ltd","Football; Performance; Predictive; Probability; Shooting","Athletic Performance; Extremities; Foot; Probability; Psychomotor Performance; Soccer; Commerce; Economic and social effects; Sports; Different speed; Optimal target; Performance; Performance constraints; Predictive; Predictive models; Probability of success; Shooting; Trade off; article; foot; football; human; predictive model; probability; punishment; soccer; velocity; athletic performance; limb; probability; psychomotor performance; Probability","Azar O.H., Bar-Eli M., Do soccer players play the mixed-strategy Nash equilibrium?, Appl. Econ., 43, 25, pp. 3591-3601, (2011); Bar-Eli M., Azar O.H., Penalty kicks in soccer: An empirical analysis of shooting strategies and goalkeepers’ preferences, Soccer Soc., 10, 2, pp. 183-191, (2009); Bar-Eli M., Azar O.H., Ritov I., Keidar-Levin Y., Schein G., Action bias among elite soccer goalkeepers: The case of penalty kicks, J. Econ. Psychol., 28, 5, pp. 606-621, (2007); Botwell M., King M., Pain M., Analysis of the keeper-dependent strategy in the soccer penalty kick, Int. J. Sports Sci. Eng., 3, 2, pp. 93-102, (2009); Chiappori P.A., Levitt S., Groseclose T., pp. 1138-1151, (2002); Dicks M., Button C., Davids K., Availability of advance visual information constrains association-football goalkeeping performance during penalty kicks, Perception, 39, 8, pp. 1111-1124, (2010); Dicks M., Davids K., Button C., Individual differences in the visual control of intercepting a penalty kick in association football, Hum. Mov. Sci., 29, 3, pp. 401-411, (2010); Fitts P.M., (1954); Hunter A.H., Angilletta M.J., Pavlic T., Lichtwark G., Wilson R.S., Modeling the two-dimensional accuracy of soccer kicks, J. Biomech., 72, pp. 159-166, (2018); Hunter A.H., Angilletta M.J., Wilson R.S., Behaviors of shooter and goalkeeper interact to determine the outcome of soccer penalties, Scand. J. Med. Sci. Sports, 28, 12, pp. 2751-2759, (2018); Hunter A.H., Murphy S.C., Angilletta M.J., Wilson R.S., Anticipating the Direction of Soccer Penalty Shots Depends on the Speed and Technique of the Kick, Sports, 6, 3, (2018); Kuhn W., pp. 489-492, (1988); Leela J.K., Comissiong D.M., Modelling football penalty kicks, Latin-Am. J. Phys. Ed., 3, 2, pp. 259-269, (2009); Savelsbergh G.J.P., Van der Kamp J., Williams A.M., Ward P., (2005); Smeeton N.J., Williams A.M., The role of movement exaggeration in the anticipation of deceptive soccer penalty kicks, Br. J. Psychol., 103, pp. 539-555, (2012); Weigelt M., Memmert D., Schack T., Kick it like Ballack: The effects of goalkeeping gestures on goal-side selection in experienced soccer players and soccer novices, J. Cognit. Psychol., 24, 8, pp. 942-956, (2012)","R.S. Wilson; School of Biological Sciences, The University of Queensland, St Lucia, 4072, Australia; email: r.wilson@uq.edu.au","","Elsevier Ltd","00219290","","JBMCB","35780697","English","J. Biomech.","Article","Final","","Scopus","2-s2.0-85133224701" "Bentham S.H.; Hatcher J.; Horsley I.; Mc Naughton L.R.","Bentham, S.H. (6504083502); Hatcher, J. (9037396500); Horsley, I. (24067055000); Mc Naughton, L.R. (9740729900)","6504083502; 9037396500; 24067055000; 9740729900","The influence of an aircast sports stirrup ankle brace on the ankle joint proprioception of professional soccer players","2001","Sports Medicine, Training and Rehabilitation","10","4","","223","234","11","2","10.1080/10578310127605","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035740771&doi=10.1080%2f10578310127605&partnerID=40&md5=05b05c2f2348435ee2d68af86f38fbbe","Department of Sport, University of Bath, Bath BA2 7AY, Claverton Down, United Kingdom","Bentham S.H., Department of Sport, University of Bath, Bath BA2 7AY, Claverton Down, United Kingdom; Hatcher J., Department of Sport, University of Bath, Bath BA2 7AY, Claverton Down, United Kingdom; Horsley I., Department of Sport, University of Bath, Bath BA2 7AY, Claverton Down, United Kingdom; Mc Naughton L.R., Department of Sport, University of Bath, Bath BA2 7AY, Claverton Down, United Kingdom","To date studies have indicated that an ankle brace not only provides mechanical support, but also has a positive influence on ankle joint proprioception. However, it is still unclear whether this finding is correct, especially in professional soccer players. The aim of this work therefore, was to determine whether an Aircast Sports Stirrup ankle brace would influence ankle joint proprioception of the professional soccer player. Twelve male professional soccer players with no history of recent ankle injury participated in this study. A Biodex Stability System was used to test a players' balance on their dominant leg with and without a brace attached. Each subject was tested three times for each condition in a random fashion, so that a mean Stability Index (SI) could be electronically generated. The more difficulty a subject had in balancing the Biodex tilt platform the larger was the numerical score on the index. The results revealed that bracing had no significant effect (p > 0.05) on ankle joint proprioception indicated by the mean balance index, of the professional soccer player. This result casts doubt on previous literature on this topic and indicates that further study of the effect of bracing is needed.","Ankle brace; Balance; Proprioception; Stability","adult; ankle; article; athlete; biomechanics; body position; brace; human; human experiment; instrument; joint stability; male; normal human; proprioception; sport","Alves J.W., Alday R.W., Katcham D.L., Lentell G.L., A comparison of the passive support provided by various ankle brace, Journal of Orthopaedic and Sports Physical Therapy, 15, 1, pp. 10-18, (1992); Begbie G.H., The effects of alcohol and of varying amounts of visual information on a balancing test, Ergonomics, 9, pp. 325-333, (1966); Bot S.D.M., Mechelen W., The effect of ankle bracing on athletic performance, Sports Medicine, 27, 3, pp. 171-178, (1999); Booher J.M., Thibodeau G.A., Athletic Injury Assessment. 3rd ed., pp. 112-134, (1995); Callaghan M.J., Role of ankle taping and bracing in the athlete, British Journal of Sports Medicine, 31, pp. 102-108, (1997); Carroll J.P., Freedman W., Nonstationary properties of postural sway, Journal of Biomechanics, 26, pp. 409-416, (1993); Donatelli R., Cole S.P., Greenfoeld B., Wooden M., Wilkes J.S., Lackey C., Open and closed kinetic chain strength training verse functional exercises to improve performance in patients with acl reconstructed knees: A prospective study, Isokinetics and Exercise Sciences, 6, 1, pp. 7-13, (1996); Ekstrand J., Tropp H., The incidence of ankle sprains in soccer, Foot and Ankle, 11, pp. 41-44, (1990); Engstrom B., Johansson C., Tornkvist H., Soccer injuries amongst elite female players, American Journal of Sports Medicine, 19, 4, pp. 372-375, (1991); Green T.A., Hillman S.K., Comparison of support provided by a semirigid orthosis and adhesive ankle taping before, during and after exercise, The American Journal of Sports Medicine, 18, 5, pp. 498-506, (1990); Green T.A., Wright C.R., A comparative support evaluation of three ankle orthosis before, during and after exercise, Journal of Orthopaedic and Sports Physical Therapy, 11, pp. 453-466, (1990); Gross M.T., Bradshaw M.K., Ventry L.C., Weller K.H., Comparison of support provided by ankle taping and semirigid orthoses, The Journal of Orthopaedic and Sports Physical Therapy, 9, 1, pp. 33-39, (1987); Guskiewicz K.M., Perrin D.H., Research and clinical applications of assessing balance, Journal of Sports Rehabilitation, 5, pp. 45-63, (1996); Hamer P.W., Munt A.M., Harris C.D., James N.C., The influence of ankle strapping on wobbleboard performance, before, and after exercise, Australian Journal of Physiotherapy, 38, 2, pp. 85-92, (1992); Janda D., Bir C., Wild B., Goal post injuries in soccer, American Journal of Sports Medicine, 23, 3, pp. 340-344, (1995); Jerosch J., Hoffstetter I., Bork H., Bischof M., The influence of orthoses on the proprioception of the ankle joint, Knee Surg, Sports Traumatol, Arthroscopy, 3, pp. 39-46, (1995); Keller C.S., Noyes F.R., Bucher C.R., The Medical aspects of soccer injury epidemiology, American Journal of Sports Medicine, 15, pp. 230-237, (1987); Kimura I.F., Nawoczenski D.A., Epler M., Owen M.G., Effect of the airstirrup in controlling ankle inversion stress, The Journal of Orthopaedic and Sports Physical Therapy, 9, 5, pp. 190-193, (1987); Kinzey S.J., Knight K.L., The effects of ankle bracing on postural sway, Journal of Athletic Training, 29, 2, pp. 170-171, (1994); Lewin G., The incidence of injury on an english professional soccer club during one competitive season, Physiotherapy, 75, pp. 601-605, (1989); Loos T., Boelens P., The effect of ankle tape on lower limb muscle activity, International Journal of Sports Medicine, 5, pp. 45-46, (1984); Mackean L.C., Bell G., Burnham R.S., Prophylactic ankle bracing vs taping: Effect on functional performance in female basketball players, Journal of Orthopaedic and Sports Physical Therapy, 22, pp. 77-81, (1995); Mattacola C.G., Lebsack D.A., Perrin D.H., Intertester reliability of assessing postural Wway using the chattex balance system, Journal of Athletic Training, 29, pp. 170-171, (1994); Nie N.H., Hull C.H., Jenkins J.G., Steinbrenner K., Bent D.H., SPSS: Statistical Package for the Social Sciences. 2nd ed., pp. 36-48, (1975); Nielsen A.B., Yde J., Epidemiology and traumatology of injuries in soccer, American Journal of Sports Medicine, 17, pp. 803-807, (1989); Nilsson S., Roassa A., Soccer injuries in adolescents, American Journal of Sports Medicine, 6, pp. 358-361, (1978); Nishikawa T., Grabiner M.D., Peroneal motoneuron excitability increases immediately following application of a semirigid ankle brace, Journal of Orthopaedic and Sports Physical Therapy, 29, 3, pp. 108-176, (1999); Phillips N., The medical aspect of professional association football, Journal Coll General Practitioner, 19, pp. 349-352, (1970); Pincivero D., Lephart S.M., Henry T., Learning effects and reliability of the biodex stability system, Journal of Athletic Training, 30, (1995); Renstrom P.A., Konradsen L., Benyonnon B.D., Influence of knee and ankle support on proprioception and neuromuscular control, Proprioception and Neuromuscular Control in Joint Stability, pp. 301-309, (2000); Rose A., Lee R.J., Williams R.M., Thomas L.C., Forsyth A., Functional instability in non-contact ankle ligament injuries, British Journal of Sports Medicine, 34, pp. 352-358, (2000); Rovere G.D., Clarke T.J., Yates C.S., Burley K., Retrospective comparison of taping and ankle stabilisers in preventing ankle injuries, The American Journal of Sports Medicine, 16, 3, pp. 228-233, (1988); Schmitz R., Arnold B., Intertester and intratester reliability of a dynamic balance protocol using the biodex stability system, Journal of Sports Rehabilitation, 7, 2, pp. 95-101, (1998); Seligson D., Gassman J., Pope M., Ankle instability evaluation in the lateral ligaments, American Journal of Sports Medicine, 8, pp. 39-42, (1980); Stuessi E., Tiegermann V., Gerber H., Raemy H., Stacoff A., A biomechanical study of the stabilisation effect of the aircast ankle brace, Biomechanics X-A International Series on Biomechanics, 6, A, pp. 159-164, (1987); Sullivan J., Gross R., Grana W., Evaluation of injuries in youth soccer, American Journal of Sports Medicine, 8, pp. 325-327, (1980); Surve I., Schwellnus M.P., Noakes T., Lombard C., A fivefold reduction in the incidence of recurrent ankle sprains in soccer players using the sports stirrup orthosis, The American Journal of Sports Medicine, 22, 5, pp. 601-606, (1994); Tropp H., Askling C., Gillquist J., Prevention of ankle sprains, American Journal of Sports Medicine, 13, pp. 259-262, (1985); Verbrugge J.D., The effects of semirigid air-stirrup bracing vs adhesive ankle taping on motor performance, Journal of Orthopaedic and Sports Physical Therapy, 23, 5, pp. 320-325, (1996); Walgenback A.W., The ankle joint: The elevation and treatment of sprains, Nurse Practitioner Forum, 7, 3, pp. 120-124, (1996); Wilkerson G.B., Behan E., The Advantages of a Dynamic Stability System Compared to a Static Force Plate System for Orthopaedic and Musculoskeletal Rehabilitation, (1994)","L.R. Mc Naughton; Department of Sport, University of Bath, Bath BA2 7AY, Claverton Down, United Kingdom; email: l.mcnaughton@bath.ac.uk","","Taylor and Francis Ltd.","10578315","","SMTJE","","English","Sports Med. Train. Rehabil.","Article","Final","","Scopus","2-s2.0-0035740771" "Scholes M.J.; Mentiplay B.F.; Kemp J.L.; King M.G.; Schache A.G.; Heerey J.J.; Sritharan P.; Semciw A.I.; Agricola R.; Crossley K.M.","Scholes, Mark J. (57196080819); Mentiplay, Benjamin F. (55675788700); Kemp, Joanne L. (54890686600); King, Matthew G. (55636112000); Schache, Anthony G. (6602235911); Heerey, Joshua J. (57200082291); Sritharan, Prasanna (55151572300); Semciw, Adam I. (55022720000); Agricola, Rintje (55042139700); Crossley, Kay M. (7004850146)","57196080819; 55675788700; 54890686600; 55636112000; 6602235911; 57200082291; 55151572300; 55022720000; 55042139700; 7004850146","Are hip biomechanics during running associated with symptom severity or cam morphology size in male football players with FAI syndrome?","2023","Gait and Posture","105","","","17","26","9","1","10.1016/j.gaitpost.2023.06.021","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85164439886&doi=10.1016%2fj.gaitpost.2023.06.021&partnerID=40&md5=cac51ecbde6ea8b386849015f72676d4","La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia; Department of Orthopaedics, Erasmus University Medical Center, Rotterdam, Netherlands","Scholes M.J., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia; Mentiplay B.F., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia; Kemp J.L., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia; King M.G., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia; Schache A.G., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia; Heerey J.J., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia; Sritharan P., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia; Semciw A.I., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia; Agricola R., Department of Orthopaedics, Erasmus University Medical Center, Rotterdam, Netherlands; Crossley K.M., La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia","Background: Femoroacetabular impingement (FAI) syndrome is considered a motion-related condition. Little is known about the influence of symptom severity and cam morphology on hip biomechanics for individuals with FAI syndrome. Research question: Are hip biomechanics during running associated with symptom severity or cam morphology size in male football players with FAI syndrome? Methods: Forty-nine male, sub-elite football (soccer or Australian football) players (mean age= 26 years) with FAI syndrome completed the International Hip Outcome Tool-33 (iHOT-33) and Copenhagen Hip and Groin Outcome Score (HAGOS) and underwent radiographic evaluation. Biomechanical data were collected during overground running (3–3.5 m∙s−1) using three-dimensional motion capture technology and an embedded force plate. Various discrete hip angles and impulses of joint moments were analysed during the stance phase. Linear regression models investigated associations between running biomechanics data (dependent variables) and iHOT-33 and HAGOS scores and cam morphology size (independent variables). Results: Hip joint angles during running were not associated with symptom severity in football players with FAI syndrome. A positive association was found between the impulse of the hip external rotation moment and HAGOS-Sport scores, such that a smaller impulse magnitude occurred with a lower HAGOS-Sport score (0.026 *10−2 [95%CI <0.001 *10−2 to 0.051 *10−2], P = 0.048). Larger cam morphology was associated with a greater peak hip adduction angle at midstance (0.073 [95%CI 0.002–0.145], P = 0.045). Significance: Hip biomechanics during running did not display strong associations with symptom severity or cam morphology size in male football players with FAI syndrome who were still participating in training and match play. Future studies might consider investigating associations during tasks that utilise end range hip joint motion or require greater muscle forces. © 2023 The Authors","Femoroacetabular impingement; Gait analysis; Hip joint; Kinematics; Rehabilitation","Adult; Australia; Biomechanical Phenomena; Femoracetabular Impingement; Hip Joint; Humans; Male; Range of Motion, Articular; Running; Soccer; adduction; adult; Article; biomechanics; clinical article; clinical assessment; cohort analysis; disease severity; femoroacetabular impingement; football player; gait; hip angle; hip radiography; human; inguinal region; joint function; male; motion capture; muscle strength; outcome assessment; prospective study; rotation; running; Australia; biomechanics; hip; physiology; range of motion; soccer","Rankin A.T., Bleakley C.M., Cullen M., Hip joint pathology as a leading cause of groin pain in the sporting population, Am. J. Sports Med., 43, 7, pp. 1698-1703, (2015); Griffin D.R., Dickenson E.J., O'Donnell J., Agricola R., Awan T., Beck M., Et al., The Warwick agreement on femoroacetabular impingement syndrome (FAI syndrome): an international consensus statement, Br. J. Sports Med., 50, 19, pp. 1169-1176, (2016); King M.G., Lawrenson P.R., Semciw A.I., Middleton K.J., Crossley K.M., Lower limb biomechanics in femoroacetabular impingement syndrome: a systematic review and meta-analysis, Br. J. Sports Med., 52, 9, pp. 566-580, (2018); Ng K.C., Mantovani G., Modenese L., Beaule P.E., Lamontagne M., Altered walking and muscle patterns reduce hip contact forces in individuals with symptomatic cam femoroacetabular impingement, Am. J. Sports Med., 46, 11, pp. 2615-2623, (2018); Lewis C.L., Loverro K.L., Khuu A., Kinematic differences during single-leg step-down between individuals with femoroacetabular impingement syndrome and individuals without hip pain, J. Orthop. Sports Phys. 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Biomech., 31, pp. 87-92, (2016); Farkas G.J., Cvetanovich G.L., Rajan K.B., Espinoza Orias A.A., Nho S.J., Impact of femoroacetabular impingement morphology on gait assessment in symptomatic patients, Sports Health, 7, 5, (2015); King M.G., Heerey J.J., Schache A.G., Semciw A.I., Middleton K.J., Sritharan P., Et al., Lower limb biomechanics during low- and high-impact functional tasks differ between men and women with hip-related groin pain, Clin. Biomech., 68, pp. 96-103, (2019); King M.G., Schache A.G., Semciw A.I., Middleton K.J., Heerey J.J., Kemp J.L., Et al., Lower-limb work during high- and low-impact activities in hip-related pain: associations with sex and symptom severity, Gait Posture, 83, pp. 1-8, (2021); Herzog W., Clark A., Wu J., Resultant and local loading in models of joint disease, Arthritis Rheum., 49, 2, (2003)","M.J. Scholes; La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Bundoora, 3806, Australia; email: m.scholes@latrobe.edu.au","","Elsevier B.V.","09666362","","GAPOF","37453338","English","Gait Posture","Article","Final","All Open Access; Green Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85164439886" "Akbari H.; Kuwano S.; Shimokochi Y.","Akbari, Hadi (57204285239); Kuwano, Satoshi (58188785900); Shimokochi, Yohei (12806432000)","57204285239; 58188785900; 12806432000","Effect of Heading a Soccer Ball as an External Focus During a Drop Vertical Jump Task","2023","Orthopaedic Journal of Sports Medicine","11","4","","","","","1","10.1177/23259671231164706","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85152956039&doi=10.1177%2f23259671231164706&partnerID=40&md5=76c0c1d9f7a47e6777acfc436889b64b","Department of Sport Sciences, Faculty of Literature and Humanities, University of Zabol, Zabol, Iran; Faculty of Business Information Science, Jobu University, Gunma, Japan; Department of Health and Sport Management, School of Health and Sport Sciences, Osaka University of Health and Sport Sciences, Osaka, Japan","Akbari H., Department of Sport Sciences, Faculty of Literature and Humanities, University of Zabol, Zabol, Iran; Kuwano S., Faculty of Business Information Science, Jobu University, Gunma, Japan; Shimokochi Y., Department of Health and Sport Management, School of Health and Sport Sciences, Osaka University of Health and Sport Sciences, Osaka, Japan","Background: Research has demonstrated that performing a secondary task during a drop vertical jump (DVJ) may affect landing kinetics and kinematics. Purpose: To examine the differences in the trunk and lower extremity biomechanics associated with anterior cruciate ligament (ACL) injury risk factors between a standard DVJ and a DVJ while heading a soccer ball (header DVJ). Study Design: Descriptive laboratory study. Methods: Participants comprised 24 college-level soccer players (18 female and 6 male; mean ± SD age, 20.04 ± 1.12 years; height, 165.75 ± 7.25 cm; weight, 60.95 ± 8.47 kg). Each participant completed a standard DVJ and a header DVJ, and biomechanics were recorded using an electromagnetic tracking system and force plate. The difference (Δ) in 3-dimensional trunk, hip, knee, and ankle biomechanics between the tasks was analyzed. In addition, for each biomechanical variable, the correlation between the data from the 2 tasks was calculated. Results: Compared to the standard DVJ, performing the header DVJ led to significantly reduced peak knee flexion angle (Δ = 5.35°; P =.002), knee flexion displacement (Δ = 3.89°; P =.015), hip flexion angle at initial contact (Δ = −2.84°; P =.001), peak trunk flexion angle (Δ = 13.11°; P =.006), and center of mass vertical displacement (Δ = −0.02m; P =.010), and increased peak anterior tibial shear force (Δ = −0.72 N/kg; P =.020), trunk lateral flexion angle at initial contact (Δ = 1.55°; P <.0001), peak trunk lateral flexion angle (Δ = 1.34°; P =.003), knee joint stiffness (Δ = 0.002 N*m/kg/deg; P =.017), and leg stiffness (Δ = 8.46 N/kg/m; P =.046) compared to those in standard DVJs. In addition, individuals' data for these variables were highly and positively correlated between conditions (r = 0.632-0.908; P <.001). Conclusion: The header DVJ task showed kinetic and kinematic parameters that suggested increased risk of ACL injury as compared with the standard DVJ task. Clinical Relevance: Athletes may benefit from acquiring the ability to safely perform header DVJs to prevent ACL injury. To simulate real-time competition situations, coaches and athletic trainers should incorporate such dual tasks in ACL injury prevention programs. © The Author(s) 2023.","ACL injury; dual-task performance; football (soccer); landing biomechanics","accident prevention; adult; ankle brachial index; anterior cruciate ligament injury; anterior cruciate ligament reconstruction; Article; athletic trainer; biomechanics; Drop Vertical Jump Task; dual-task performance (test); electromagnetism; experimental test; female; ground reaction force; header Drop Vertical Jump Task; hip flexion angle; human; kinematics; knee function; male; range of motion; risk factor; soccer player; trunk flexion angle; young adult","Ali N., Rouhi G., Robertson G., Gender, vertical height and horizontal distance effects on single-leg landing kinematics: implications for risk of non-contact ACL injury, J Hum Kinet, 37, pp. 27-38, (2013); Almonroeder T.G., Kernozek T., Cobb S., Slavens B., Wang J., Huddleston W., Cognitive demands influence lower extremity mechanics during a drop vertical jump task in female athletes, J Orthop Sports Phys Ther, 48, 5, pp. 381-387, (2018); 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Sigward S.M., Havens K.L., Powers C.M., Knee separation distance and lower extremity kinematics during a drop land: implications for clinical screening, J Athl Train, 46, 5, pp. 471-475, (2011); Smith H.C., Johnson R.J., Shultz S.J., Et al., A prospective evaluation of the Landing Error Scoring System (LESS) as a screening tool for anterior cruciate ligament injury risk, Am J Sports Med, 40, 3, pp. 521-526, (2012); Sun R., Shea J.B., Probing attention prioritization during dual-task step initiation: a novel method, Exp Brain Res, 234, 4, pp. 1047-1056, (2016); Walden M., Hagglund M., Magnusson H., Ekstrand J., ACL injuries in men’s professional football: a 15-year prospective study on time trends and return-to-play rates reveals only 65% of players still play at the top level 3 years after ACL rupture, Br J Sports Med, 50, 12, pp. 744-750, (2016); Walden M., Krosshaug T., Bjorneboe J., Andersen T.E., Faul O., Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: a systematic video analysis of 39 cases, Br J Sports Med, 49, 22, pp. 1452-1460, (2015); Winter D.A., Biomechanics and Motor Control of Human Movement, (2009); Woo S.L., Fox R.J., Sakane M., Livesay G.A., Rudy T.W., Fu F.H., Biomechanics of the ACL: measurements of in situ force in the ACL and knee kinematics, Knee, 5, 4, pp. 267-288, (1998); Yom J.P., Simpson K.J., Arnett S.W., Brown C.N., The effects of a lateral in-flight perturbation on lower extremity biomechanics during drop landings, J Appl Biomech, 30, 5, pp. 655-662, (2014)","H. Akbari; Department of Sport Sciences, Faculty of Literature and Humanities, University of Zabol, Zabol, Iran; email: h.akbari@uoz.ac.ir","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85152956039" "Carlsson M.; Isberg J.; Nilsson J.; Carlsson T.","Carlsson, Magnus (11042570600); Isberg, Jenny (57200947346); Nilsson, Johnny (7401808764); Carlsson, Tomas (11041732800)","11042570600; 57200947346; 7401808764; 11041732800","The acute effects of a short technique-intense training period on side-foot kick performance among elite female soccer players","2019","Journal of Sports Medicine and Physical Fitness","59","9","","1442","1449","7","1","10.23736/S0022-4707.19.09449-0","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85073175864&doi=10.23736%2fS0022-4707.19.09449-0&partnerID=40&md5=724d5e54bc7167598890f785628c6e3f","Sport and Medicine, School of education, health and Social Studies, dalarna university, falun, Sweden; högskolegatan 2, falun, 79188, Sweden","Carlsson M., Sport and Medicine, School of education, health and Social Studies, dalarna university, falun, Sweden; Isberg J., Sport and Medicine, School of education, health and Social Studies, dalarna university, falun, Sweden; Nilsson J., Sport and Medicine, School of education, health and Social Studies, dalarna university, falun, Sweden; Carlsson T., Sport and Medicine, School of education, health and Social Studies, dalarna university, falun, Sweden, högskolegatan 2, falun, 79188, Sweden","BACKGROUND: Previously, it was shown that elite soccer teams were 24% more likely to win matches if their passing effectiveness were increased by 1%. However, research interventions aiming to improve passing performance are scarce. The current study aimed to investigate the effect of a short technique-intense training period on side-foot kick performance among elite female soccer players. METHODS: four side-foot kick tests were completed before and after a training period: kicking a stationary ball using match-relevant (SBRS) and maximal ball speed (SBMS), passing the ball on the move using match-relevant ball speed (RBRS), and repeated side-foot kicks onto a rebound-box with continuously increasing passing distance (RRB). The players were assigned to either the intervention group or the control group. The training intervention consisted of six 55-min training sessions with five side-foot kick exercises. Within-group and between-group differences were investigated using paired-samples t-test and Mann-Whitney U test, respectively. RESULTS: The intervention group improved the performance in the RBRS and RRB tests (both P<0.05), but no differences were found for the SBRS and SBMS tests (both P>0.05). No improvements were found for the control group independent of test condition (all P>0.05). Significant between-group differences were found for the RBRS and RRB tests (both P<0.05), whereas no differences were found for the SBRS and SBMS tests (both P>0.05). CONCLUSIONS: The fundamental soccer skill of passing a moving ball was improved in elite female soccer players by a short technique-intense training period. © 2019 EDIZIONI MINERVA MEDICA","Athletes; Exercise test; Football","Adult; Athletic Performance; Biomechanical Phenomena; Female; High-Intensity Interval Training; Humans; Soccer; Young Adult; adult; athletic performance; biomechanics; female; high intensity interval training; human; physiology; procedures; soccer; young adult","Hughes M., Franks I., Analysis of passing sequences, shots and goals in soccer, J Sports Sci, 23, pp. 509-514, (2005); Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in fA Premier League soccer, J Sports Sci Med, 6, pp. 63-70, (2007); Carling C., Analysis of physical activity profiles when running with the ball in a professional soccer team, J Sports Sci, 28, pp. 319-326, (2010); Mitschke C., Milani T.L., Soccer: Detailed analysis of played passes in the UEFA Euro 2012, Int J Sports Sci Coaching, 9, pp. 1019-1031, (2014); 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Russell M., Benton D., Kingsley M., Reliability and construct validity of soccer skills tests that measure passing, shooting, and dribbling, J Sports Sci, 28, pp. 1399-1408, (2010); Rosch D., Hodgson R., Peterson T.L., Graf-Baumann T., Junge A., Chomiak J., Et al., Assessment and evaluation of football performance, Am J Sports Med, 28, pp. S29-S39, (2000); Ali A., Foskett A., Gant N., Validation of a soccer skill test for use with females, Int J Sports Med, 29, pp. 917-921, (2008); Ali A., Williams C., Hulse M., Strudwick A., Reddin J., Howarth L., Et al., Reliability and validity of two tests of soccer skill, J Sports Sci, 25, pp. 1461-1470, (2007); Ali A., Gardiner R., Foskett A., Gant N., Fluid balance, thermoregulation and sprint and passing skill performance in female soccer players, Scand J Med Sci Sports, 21, pp. 437-445, (2011); Wen D., Robertson S., Hu G., Song B., Chen H., Measurement properties and feasibility of the Loughborough soccer passing test: A systematic review, J Sports Sci, 36, pp. 1682-1694, (2018); Bradley P.S., Dellal A., Mohr M., Castellano J., Wilkie A., Gender differences in match performance characteristics of soccer players competing in the UEfA Champions League, Hum Mov Sci, 33, pp. 159-171, (2014); Haaland E., Hoff J., Non-dominant leg training improves the bilateral motor performance of soccer players, Scand J Med Sci Sports, 13, pp. 179-184, (2003); Rowat O., Fenner J., Unnithan V., Technical and physical determinants of soccer match-play performance in elite youth soccer players, J Sports Med Phys Fitness, 57, pp. 369-379, (2017); Carlsson T., Isberg J., Nilsson J., Carlsson M., The influence of task conditions on side foot-kick accuracy among Swedish first league women’s soccer players, J Sports Sci Med, 17, pp. 74-81, (2018); Radman I., Wessner B., Bachl N., Ruzic L., Hackl M., Prpic T., Et al., The acute effects of graded physiological strain on soccer kicking performance: A randomized, controlled cross-over study, Eur J Appl Physiol, 116, pp. 373-382, (2016); Scurr J., Hall B., The effects of approach angle on penalty kicking accuracy and kick kinematics with recreational soccer players, J Sports Sci Med, 8, pp. 230-234, (2009); 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Arpinar-Avsar P., Soylu A.R., Consistency in acceleration patterns of football players with different skill levels, J Sports Sci Med, 9, pp. 382-387, (2010); Barbieri A., Gobbi L.T., Santiago P.R., Cunha S.A., Dominant-non-dominant asymmetry of kicking a stationary and rolling ball in a futsal context, J Sports Sci, 33, pp. 1411-1419, (2015); Egan C.D., Verheul M.H., Savelsbergh G.J., Effects of experience on the coordination of internally and externally timed soccer kicks, J Mot Behav, 39, pp. 423-432, (2007); Anderson D.I., Sidaway B., Coordination changes associated with practice of a soccer kick, Res Q Exerc Sport, 65, pp. 93-99, (1994); Konefal M., Chmura P., Kowalczuk E., Figueiredo A.J., Sarmento H., Rokita A., Et al., Modeling of relationships between physical and technical activities and match outcome in elite German soccer players, J Sports Med Phys Fitness, 59, pp. 752-759, (2019); Kirkendall D.T., Issues in training the female player, Br J Sports Med, 41, pp. i64-i67, (2007)","T. Carlsson; Sport and Medicine, School of education, health and Social Studies, dalarna university, falun, Sweden; email: tca@du.se","","Edizioni Minerva Medica","00224707","","JMPFA","30761813","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-85073175864" "Gholipour Aghdam G.M.; Alizadeh M.H.; Minoonejad H.; Shirzad E.; Wilke J.","Gholipour Aghdam, Ghazal Mohammad (58910179000); Alizadeh, Mohammad Hossein (57203044400); Minoonejad, Hooman (55357860100); Shirzad, Elham (36560343500); Wilke, Jan (55917364000)","58910179000; 57203044400; 55357860100; 36560343500; 55917364000","Knee Biomechanics During Neurocognitively Challenged Drop Landings in Male Elite Soccer Players with Anterior Cruciate Ligament Reconstruction","2024","Sports Medicine - Open","10","1","19","","","","0","10.1186/s40798-024-00685-w","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85186225076&doi=10.1186%2fs40798-024-00685-w&partnerID=40&md5=ded78573ea045bef7595dba40d89fd2b","Department of Sports Injury and Biomechanics, Faculty of Sport Sciences and Health, University of Tehran, Tehran, Iran; Department of Movement Sciences, University of Klagenfurt, Universitätsstraße 65-67, Klagenfurt, 9020, Austria","Gholipour Aghdam G.M., Department of Sports Injury and Biomechanics, Faculty of Sport Sciences and Health, University of Tehran, Tehran, Iran, Department of Movement Sciences, University of Klagenfurt, Universitätsstraße 65-67, Klagenfurt, 9020, Austria; Alizadeh M.H., Department of Sports Injury and Biomechanics, Faculty of Sport Sciences and Health, University of Tehran, Tehran, Iran; Minoonejad H., Department of Sports Injury and Biomechanics, Faculty of Sport Sciences and Health, University of Tehran, Tehran, Iran; Shirzad E., Department of Sports Injury and Biomechanics, Faculty of Sport Sciences and Health, University of Tehran, Tehran, Iran; Wilke J., Department of Movement Sciences, University of Klagenfurt, Universitätsstraße 65-67, Klagenfurt, 9020, Austria","Background: Reactive decision-making during athletic movement has been demonstrated to evoke unfavorable biomechanics associated with anterior cruciate ligament (ACL) rupture. However, the current evidence is based on assessments of healthy individuals. We aimed to investigate unplanned jump landing kinetics and knee kinematics in ACL-reconstructed (ACLR) and non-injured athletes. Methods: A total of 30 male professional soccer players (n = 15 ACLR after return to play, n = 15 matched controls) performed six drop landings onto a force plate. As a neurocognitive challenge requiring decision-making, a diode flashing in randomly selected colors indicated the requested landing location. Knee joint kinematics (flexion, valgus and tibial rotation angles) assessed with a 10-camera motion capture system, vertical ground reaction force (vGRF), time to stabilization (TTS) and length of the center of pressure (COP) trace (all analyzed from force plate data) were calculated. Cognitive function was assessed using the CNS Vital Signs battery. Results: The ACLR group produced lower knee flexion angles than the control group (median [interquartile range] 50.00° [6.60] vs. 55.20° [4.45], p =.02). In addition, path length of the center of pressure (379 mm [56.20] vs. 344 mm [37.00], p =.04) and ground reaction force (3.21 N/kg [0.66] vs. 2.87 N/kg [0.48], p =.01) were higher for the ACLR group. No differences were found for knee valgus (p =.96), tibial rotation (p =.83) and TTS (p =.82). ACLR participants scored lower for reaction time (p =.02) and processing speed (p =.01). Unfavorable knee biomechanics were more often related to cognitive function in the ACLR group than in the control group (p <.05). Conclusions: Impaired reactive decision-making during athletic movement may contribute to the high re-injury risk in individuals with ACLR. Prospective studies confirming potential cause-effect relationships are warranted. © The Author(s) 2024.","Anterior cruciate ligament reconstruction; Athletes; Decision making; Injury; Neurocognition","acceleration; adult; anterior cruciate ligament; anterior cruciate ligament reconstruction; anxiety; Article; athlete; Beck Depression Inventory; biomechanics; body mass; clinical outcome; cognition; controlled study; decision making; human; human experiment; jumping; kinematics; kinetics; knee; knee function; knee injury; knee joint; male; neurocognition; normal human; numeric rating scale; processing speed; questionnaire; reaction time; return to sport; soccer; soccer player; task performance; valgus knee; verbal memory; visual memory; vital sign; young adult","Dingenen B., Gokeler A., Optimization of the return-to-sport paradigm after anterior cruciate ligament reconstruction: a critical step back to move forward, Sports Med, 47, pp. 1487-1500, (2017); Ardern C.L., Taylor N.F., Feller J.A., Webster K.E., Fifty-five per cent return to competitive sport following anterior cruciate ligament reconstruction surgery: an updated systematic review and meta-analysis including aspects of physical functioning and contextual factors, Br J Sports Med, 48, (2014); Wiggins A.J., Grandhi R.K., Schneider D.K., Stanfield D., Webster K.E., Myer G.D., Risk of secondary injury in younger athletes after anterior cruciate ligament reconstruction: a systematic review and meta-analysis, Am J Sports Med, 44, pp. 1861-1876, (2016); Wilke J., Vogel O., Ungricht S., Can we measure perceptual-cognitive function during athletic movement? 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Wilke; Department of Movement Sciences, University of Klagenfurt, Klagenfurt, Universitätsstraße 65-67, 9020, Austria; email: jan.wilke@aau.at","","Springer Science and Business Media Deutschland GmbH","21991170","","","","English","Sports Med. - Open","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85186225076" "Kolodziej M.; Willwacher S.; Nolte K.; Schmidt M.; Jaitner T.","Kolodziej, Mathias (57203686274); Willwacher, Steffen (36709076600); Nolte, Kevin (56416032200); Schmidt, Marcus (58722150900); Jaitner, Thomas (22834949800)","57203686274; 36709076600; 56416032200; 58722150900; 22834949800","Biomechanical Risk Factors of Injury-Related Single-Leg Movements in Male Elite Youth Soccer Players","2022","Biomechanics (Switzerland)","2","2","","281","300","19","1","10.3390/biomechanics2020022","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85159001516&doi=10.3390%2fbiomechanics2020022&partnerID=40&md5=1f70029bf4e42c7fd9c200c614fe8247","Department of Strength and Conditioning and Performance, Borussia Dortmund, Dortmund, 44309, Germany; Institute for Sport and Sport Science, TU Dortmund University, Dortmund, 44227, Germany; Department of Mechanical and Process Engineering, Offenburg University of Applied Sciences, Offenburg, 77652, Germany","Kolodziej M., Department of Strength and Conditioning and Performance, Borussia Dortmund, Dortmund, 44309, Germany, Institute for Sport and Sport Science, TU Dortmund University, Dortmund, 44227, Germany; Willwacher S., Department of Mechanical and Process Engineering, Offenburg University of Applied Sciences, Offenburg, 77652, Germany; Nolte K., Institute for Sport and Sport Science, TU Dortmund University, Dortmund, 44227, Germany; Schmidt M., Institute for Sport and Sport Science, TU Dortmund University, Dortmund, 44227, Germany; Jaitner T., Institute for Sport and Sport Science, TU Dortmund University, Dortmund, 44227, Germany","Altered movement patterns during single-leg movements in soccer increase the risk of lower-extremity non-contact injuries. The identification of biomechanical parameters associated with lower-extremity injuries can enrich knowledge of injury risks and facilitate injury prevention. Fifty-six elite youth soccer players performed a single-leg drop landing task and an unanticipated side-step cutting task. Three-dimensional ankle, knee and hip kinematic and kinetic data were obtained, and non-contact lower-extremity injuries were documented throughout the season. Risk profiling was assessed using a multivariate approach utilising a decision tree model (classification and regression tree method). The decision tree model indicated peak knee frontal plane angle, peak vertical ground reaction force, ankle frontal plane moment and knee transverse plane angle at initial contact (in this hierarchical order) for the single-leg landing task as important biomechanical parameters to discriminate between injured and non-injured players. Hip sagittal plane angle at initial contact, peak ankle transverse plane angle and hip sagittal plane moment (in this hierarchical order) were indicated as risk factors for the unanticipated cutting task. Ankle, knee and hip kinematics, as well as ankle and hip kinetics, during single-leg high-risk movements can provide a good indication of injury risk in elite youth soccer players. © 2022 by the authors.","biomechanical screening; decision tree; injury prevention; risk factor; youth soccer","","Pfirrmann D., Herbst M., Ingelfinger P., Simon P., Tug S., Analysis of injury incidences in male professional adult and elite youth soccer players: A systematic review, J. Athlet. Train, 51, pp. 410-424, (2016); Price R., Hawkins R., Hulse M., Hodson A., The football association medical research programme: An audit of injuries in academy youth football, Br. J. 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Physiol, 8, (2017); Owoeye O.B., VanderWey M.J., Pike I., Reducing injuries in soccer (football): An umbrella review of best evidence across the epidemiological framework for prevention, Sports Med.-Open, 6, (2020); Besier T.F., Lloyd D.G., Cochrane J.L., Ackland T.R., External loading of the knee joint during running and cutting maneuvers, Med. Sci. Sports Exerc, 33, pp. 1168-1175, (2001); Sigward S.M., Cesar G.M., Havens K.L., Predictors of frontal plane knee moments during side-step cutting to 45 and 110 degrees in men and women: Implications for anterior cruciate ligament injury, Clin. J. Sport Med, 25, pp. 529-534, (2015); Dai B., Garrett W.E., Gross M.T., Padua D.A., Queen R.M., Yu B., The effect of performance demands on lower extremity biomechanics during landing and cutting tasks, J. Sport Health Sci, 8, pp. 228-234, (2019); Meeuwisse W.H., Tyreman H., Hagel B., Emery C., A dynamic model of etiology in sport injury: The recursive nature of risk and causation, Clin. J. Sport Med, 17, pp. 215-219, (2007); Emery C.A., Meeuwisse W.H., Hartmann S.E., Evaluation of risk factors for injury in adolescent soccer: Implementation and validation of an injury surveillance system, Am. J. Sports Med, 33, pp. 1882-1891, (2005); Read P.J., Oliver J.L., De Ste Croix M., Myer G.D., Lloyd R.S., A prospective investigation to evaluate risk factors for lower extremity injury risk in male youth soccer players, Scand. J. Med. Sci. Sports, 28, pp. 1244-1251, (2018); Soderkvist I., Wedin P.-A., Determining the movements of the skeleton using well-configured markers, J. Biomech, 26, pp. 1473-1477, (1993); Lucke-Wold B., Nolan R., Nwafor D., Nguyen L., Cheyuo C., Turner R., Rosen C., Marsh R., Post-traumatic stress disorder delineating the progression and underlying mechanisms following blast traumatic brain injury, J. Neurosci. Neuropharmacol, 4, (2018)","M. Kolodziej; Department of Strength and Conditioning and Performance, Borussia Dortmund, Dortmund, 44309, Germany; email: mathias.kolodziej@bvb.de","","Multidisciplinary Digital Publishing Institute (MDPI)","26737078","","","","English","Biomechanics","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85159001516" "Van Den Eijnde W.; Meijer K.; Lamers E.; Peppelman M.; Van Erp P.","Van Den Eijnde, Wilbert (6504281510); Meijer, Kenneth (55345573800); Lamers, Edwin (36128531700); Peppelman, Malou (53364139700); Van Erp, Piet (7006300470)","6504281510; 55345573800; 36128531700; 53364139700; 7006300470","Exploring the biomechanical load of a sliding on the skin: Understanding the acute skin injury mechanism of player-surface interaction","2017","Journal of Sports Medicine and Physical Fitness","57","9","","1205","1210","5","1","10.23736/S0022-4707.16.06404-5","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85025440740&doi=10.23736%2fS0022-4707.16.06404-5&partnerID=40&md5=70df82a0bdb9294225f73368c1ebd3a3","Department of Dermatology, Radboud University Nijmegen Medical Centre, PO Box 9101, Nijmegen, 6500, HB, Netherlands; NUTRIM, Faculty of Health Medicine and Life Sciences, Maastricht University Medical Centre, Maastricht, Netherlands; Reden B.V., Hengelo, Netherlands","Van Den Eijnde W., Department of Dermatology, Radboud University Nijmegen Medical Centre, PO Box 9101, Nijmegen, 6500, HB, Netherlands; Meijer K., NUTRIM, Faculty of Health Medicine and Life Sciences, Maastricht University Medical Centre, Maastricht, Netherlands; Lamers E., Reden B.V., Hengelo, Netherlands; Peppelman M., Department of Dermatology, Radboud University Nijmegen Medical Centre, PO Box 9101, Nijmegen, 6500, HB, Netherlands; Van Erp P., Department of Dermatology, Radboud University Nijmegen Medical Centre, PO Box 9101, Nijmegen, 6500, HB, Netherlands","Background: Currently, there is a shortage of biomechanical data regarding acute skin injury mechanisms that are involved in playersurface contact in soccer on artificial turf. It is hypothesized that peak loads on the skin during the landing phase are an important factor in causing an acute skin injury. Methods: Simultaneously, video analysis and load measurements using an in-ground force plate of the landing phase of a sliding tackle were recorded and correlated with observed clinical skin lesions. Results: Video analysis revealed two sliding techniques: a horizontal jump and a sliding-in technique. The first technique resulted in both significantly higher vertical and horizontal peak forces during impact on the knee (2.3±0.4 kN and 1.4±0.5 kN) and thigh (4.9±0.9 kN and 1.8±0.5 kN). In combination with the observed skin lesion areas, a combined normal-shear stress of at least 24 and 14 N.cm-2 induce abrasion injuries on dry artificial turf. Conclusions: The findings of this study confirm that high peak stresses during the landing phase of a sliding is critical for inducing skin injuries on the knee and thigh. Reducing these peak shear stresses could be an important first step towards preventive measures. © 2016 Edizioni Minerva Medica.","Skin; Soccer; Turf; Wounds and injuries","Adult; Analysis of Variance; Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Humans; Male; Skin; Soccer; Stress, Mechanical; Video Recording; adult; analysis of variance; anterior cruciate ligament injury; biomechanics; human; injuries; male; mechanical stress; pathology; skin; soccer; videorecording","Nahum A., Melvin J., Accidental Injury: Biomechanics and Prevention Chapter 1 in the Application of Biomechanics to the Understanding of Injury and Healing, (1993); Van Den Eijnde W.A.J., Peppelman M., Lamers E.A.D., Van De Kerkhof P.C.M., Van Erp P.E.J., Acute skin injury mechanism caused by playersurface contact during soccer: A survey and systematic review, Orthopaedic J Sport Med, 2, (2014); Junge A., Dvorak J., Influence of definition and data collection on the incidence of injuries in football, Am J Sports Med, 28, 5, pp. 40-46, (2000); Yamaner F., Gumus M., Guler D., Gullu E., Kartal A., Evaluation of injuries in professional Turkish football players, Eur J Gen Med, 8, pp. 98-104, (2011); Zanetti E.M., Amateur football game on artificial turf: Players' perceptions, Appl Ergon, 40, pp. 485-490, (2009); Andersson H., Ekblom B., Krustrup P., Elite football on artificial turf versus natural grass: Movement patterns, technical standards, and player impressions, J Sports Sci, 26, pp. 113-122, (2008); Determination of skin/surface friction and skin abrasion (FIFA test method 08), FIFA. Quality Concept for Football Turf - Handbook of Test Methods, pp. 37-40, (2012); Sanchis M., Rosa D., Gamez J., Alcantara E., Gimeno C., Such M.J., Et al., Development of a new technique to evaluate abrasiveness artificial turf, The Engineering of Sport (P168) 7, 2, pp. 149-156, (2008); Immers I., Kunstgras. Wat Vindt U Ervan (Dutch). Bachelor Project, (2012); Bahr R., Krosshaug T., Understanding injury mechanisms: A key component of preventing injuries in sport, Br J Sports Med, 39, pp. 324-329, (2005); Fuller C.W., Smith G.L., Junge A., Dvorak J., The influence of tackle parameters on the propensity for injury in international football, Am J Sports Med, 32, 1, pp. 43-53, (2004); Corzatt R.D., Groppel J.L., Pfautsch E., Boscardin J., The biomechanics of head-first versus feet-first sliding, Am J Sports Med, 12, pp. 229-232, (1984); Groen B.E., Weerdesteyn V., Duysens J., Martial arts fall techniques decrease the impact forces at the hip during sideways falling, J Biomech, 40, pp. 458-462, (2007); Nankaku M., Kanzaki H., Tsuboyama T., Nakamura T., Evaluation of hip fracture risk in relation to fall direction, Osteoporos Int, 16, pp. 1315-1320, (2005); Schmitt K.U., Schlittler M., Boesiger P., Biomechanical loading of the hip during side jumps by soccer goalkeepers, J Sports Sci, 28, pp. 53-59, (2010); Basler R.S., Hunzeker C.M., Garcia M.A., Athletic skin injuries: Combating pressure and friction, Phys Sportsmed, 32, pp. 33-40, (2004); Determination of shock absorption (FIFA test method 04), FIFA. Quality Concept for Football Turf - Handbook of Test Methods, pp. 15-22, (2012); Van Den Eijnde W., Peppelman M., Weghuis M.O., Van Erp P.E., Psychosensorial assessment of skin damage caused by a sliding on artificial turf: The development and validation of a skin damage area and severity index, J Sci Med Sport, 17, pp. 18-22, (2014); Goldstein B., Sanders J., Skin response to repetitive mechanical stress: A new experimental model in pig, Arch Phys Med Rehabil, 79, pp. 265-272, (1998)","W. Van Den Eijnde; Department of Dermatology, Radboud University Nijmegen Medical Centre, Nijmegen, PO Box 9101, 6500, Netherlands; email: wilbert.vandeneijnde@radboudumc.nl","","Edizioni Minerva Medica","00224707","","JMPFA","27385545","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-85025440740" "Monteiro R.L.M.; dos Santos C.C.A.; Blauberger P.; Link D.; Russomanno T.G.; Tahara A.K.; Chinaglia A.G.; Santiago P.R.P.","Monteiro, Rafael Luiz Martins (57771172600); dos Santos, Carlos Cesar Arruda (58197639900); Blauberger, Patrick (57222008436); Link, Daniel (55647868500); Russomanno, Tiago Guedes (36864320900); Tahara, Ariany Klein (57209099335); Chinaglia, Abel Gonçalves (58176226000); Santiago, Paulo Roberto Pereira (36098423400)","57771172600; 58197639900; 57222008436; 55647868500; 36864320900; 57209099335; 58176226000; 36098423400","Enhancing soccer goalkeepers penalty dive kinematics with instructional video and laterality insights in field conditions","2024","Scientific Reports","14","1","10225","","","","0","10.1038/s41598-024-60074-x","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85192088900&doi=10.1038%2fs41598-024-60074-x&partnerID=40&md5=d7f6e3a44b1f2b430dd73236aab1924b","Biomechanics and Motor Control Laboratory, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre, SP, Ribeirão Preto, 14049-900, Brazil; School of Physical Education and Sports of Ribeirão Preto, University of São Paulo, Ribeirão Preto, 14040-907, Brazil; Chair of Performance Analysis and Sports Informatics, Technical University of Munich, Munich, 80992, Germany","Monteiro R.L.M., Biomechanics and Motor Control Laboratory, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre, SP, Ribeirão Preto, 14049-900, Brazil; dos Santos C.C.A., School of Physical Education and Sports of Ribeirão Preto, University of São Paulo, Ribeirão Preto, 14040-907, Brazil; Blauberger P., Chair of Performance Analysis and Sports Informatics, Technical University of Munich, Munich, 80992, Germany; Link D., Chair of Performance Analysis and Sports Informatics, Technical University of Munich, Munich, 80992, Germany; Russomanno T.G., Chair of Performance Analysis and Sports Informatics, Technical University of Munich, Munich, 80992, Germany; Tahara A.K., Biomechanics and Motor Control Laboratory, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre, SP, Ribeirão Preto, 14049-900, Brazil; Chinaglia A.G., Biomechanics and Motor Control Laboratory, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre, SP, Ribeirão Preto, 14049-900, Brazil; Santiago P.R.P., Biomechanics and Motor Control Laboratory, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre, SP, Ribeirão Preto, 14049-900, Brazil, School of Physical Education and Sports of Ribeirão Preto, University of São Paulo, Ribeirão Preto, 14040-907, Brazil","This study aimed to analyze the effect of laterality and instructional video on the soccer goalkeepers’ dive kinematics in penalty. Eight goalkeepers from youth categories (U15, U17, U20) were randomly divided into control (CG) and video instruction groups (VG). The latter performed 20 penalty defense trials on the field with balls launched by a machine, ten before and after watching a video instruction to improve the diving kinematics. The CG only performed the dives. Three cameras recorded the collections. A markerless motion capture technique (OpenPose) was used for identification and tracking of joints and anatomical references on video. The pose data were used for 3D reconstruction. In the post-instruction situation, the VG presented differences in comparison to the CG in the: knee flexion/extension angle, time to reach peak resultant velocity, frontal step distance, and frontal departure angle, which generated greater acceleration during the dive. Non-dominant leg side dives had higher resultant velocity during 88.4 – 100% of the diving cycle, different knee flexion/extension angle, and higher values ​​in the frontal step distance. The instructional video generated an acute change in the diving movement pattern of young goalkeepers when comparing the control and the video instruction group in the post condition. © The Author(s) 2024.","3D reconstruction; Biomechanics; Football; Markerless; OpenPose","Adolescent; Athletic Performance; Biomechanical Phenomena; Functional Laterality; Humans; Male; Soccer; Video Recording; adolescent; athletic performance; biomechanics; hemispheric dominance; human; male; physiology; soccer; videorecording","Dalton K., Guillon M., Naroo S.A., An analysis of penalty kicks in elite football post 1997, Int. J. Sports Sci. Coach, 10, pp. 815-827, (2015); Hughes M., Wells J., Analysis of penalties taken in shoot-outs, Int. J. Perform Anal. Sport, 2, pp. 55-72, (2002); Memmert D., Huttermann S., Hagemann N., Loffing F., Strauss B., Dueling in the penalty box: Evidence-based recommendations on how shooters and goalkeepers can win penalty shootouts in soccer, Int. Rev. Sport Exerc. Psychol, 6, pp. 209-229, (2013); Muller F., Best J.F., Canal-Bruland R., Goalkeepers’ reputations bias shot placement in soccer penalties, J. Sport Exerc. Psychol, 40, pp. 128-134, (2018); Noel B., Van Der Kamp J., Memmert D., Implicit goalkeeper influences on goal side selection in representative penalty kicking tasks, PLoS One, 10, pp. 1-8, (2015); Noel B., van der Kamp J., Masters R., Memmert D., Scan direction influences explicit but not implicit perception of a goalkeeper’s position, Atten. Percept. Psychophys, 78, pp. 2494-2499, (2016); Greenlees I., Et al., Soccer penalty takers ’ uniform colour and pre- penalty kick gaze affect the impressions formed of them by opposing goalkeepers the impressions formed of them by opposing goalkeepers, J. Sports Sci, 26, pp. 569-576, (2008); Greenlees I.A., Eynon M., Thelwell R.C., Color of soccer goalkeepers’ uniforms influences the outcome of penalty kicks 1, Percept. Motor Skills Exerc. Sport, 117, pp. 1-10, (2013); Bar-Eli M., Azar O.H., Penalty kicks in soccer : An empirical analysis of shooting strategies and goalkeepers ’ preferences, Soccer Soc, 10, pp. 183-191, (2009); Furley P., Noel B., Memmert D., Attention towards the goalkeeper and distraction during penalty shootouts in association football: a retrospective analysis of penalty shootouts from 1984 to 2012, J. Sports Sci, 35, pp. 873-879, (2016); Wood G., Wilson M.R., A moving goalkeeper distracts penalty takers and impairs shooting accuracy, J. Sports Sci, 28, pp. 937-946, (2010); Navarro M., van der Kamp J., Ranvaud R., Savelsbergh G.J.P., The mere presence of a goalkeeper affects the accuracy of penalty kicks, J. Sports Sci, 31, pp. 921-929, (2013); Augustus S., Mundy P., Smith N., Support leg action can contribute to maximal instep soccer kick performance: an intervention study, J. Sports Sci, 35, pp. 89-98, (2017); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Med. Sci. Sports Exerc, 36, pp. 1017-1028, (2004); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J. Sports Sci. Med, 6, pp. 154-165, (2007); Shan G., Westerhoff P., Soccer: Full-body kinematic characteristics of the maximal instep Soccer kick by male soccer players and parameters related to kick quality, Sports Biomech, 4, pp. 59-72, (2005); Scurr J., Hall B., The effects of approach angle on penalty kicking accuracy and kick kinematics with recreational soccer players, J. Sports Sci. Med, 8, pp. 230-234, (2009); Vieira L.H.P., Et al., Kicking performance in young U9 to U20 soccer players: Assessment of velocity and accuracy simultaneously, Res. Q Exerc. Sport, 89, pp. 210-220, (2018); Lees A., Nolan L., The biomechanics of soccer: A review, J. Sports Sci, 16, pp. 211-234, (1998); Ibrahim R., Kingma I., de Boode V.A., Faber G.S., van Dieen J.H., Kinematic and kinetic analysis of the goalkeeper’s diving save in football, J. Sports Sci, 37, pp. 313-321, (2019); Ibrahim R., Kingma I., de Boode V., Faber G.S., van Dieen J.H., Angular velocity, moment, and power analysis of the ankle, knee, and hip joints in the goalkeeper’s diving save in football, Front Sports Act Living, 2, pp. 1-9, (2020); Ibrahim R., de Boode V., Kingma I., van Dieen J.H., Data-driven strength and conditioning, and technical training programs for goalkeeper’s diving save in football, Sports Biomech, (2022); Spratford W., Mellifont R., Burkett B., The influence of dive direction on the movement characteristics for elite football goalkeepers, Sports Biomech, 8, pp. 235-244, (2009); Monteiro R.L.M., Et al., Penalty feet positioning rule modification and laterality effect on soccer goalkeepers’ diving kinematics, Sci. 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Mot. Behav, 33, pp. 295-305, (2001); Guadagnoli M., Holcomb W., Davis M., The efficacy of video feedback for learning the golf swing, J. Sports Sci, 20, pp. 615-622, (2002); Maryam C., Yaghoob M., Darush N., Mojtaba I., The comparison of effect of video-modeling and verbal instruction on the performance in throwing the discus and hammer, Procedia Soc. Behav. Sci, 1, pp. 2782-2785, (2009); Razali R., Suwarganda E., Zawaki I., The effect of direct video feedback on performance of tennis serve, 30Th Annual Conference of Biomechanics in Sports, pp. 241-244, (2012); Benjaminse A., Welling W., Otten B., Gokeler A., Transfer of improved movement technique after receiving verbal external focus and video instruction, Knee Surg. Sports Traumatol. Arthrosc, 26, pp. 955-962, (2018); de Marim E.A., Lafasse R., Okazaki V.H.A., Inventário de preferência lateral global (IPLAG), Brazi. J. Mot. Behav, 6, pp. 14-23, (2011); Macari R., Análise cinemática Do Salto Do Goleiro De Futebol Em cobranças De pênaltis: relação Entre preferência Lateral E Desempenho, (2015); Futebol C., Brasileira de, Regras De Futebol 2020/2021, 1, (2020); Lam W.K., Maxwell J.P., Masters R.S.W., Analogy versus explicit learning of a modified basketball shooting task: Performance and kinematic outcomes, J Sports Sci, 27, pp. 179-191, (2009); Meier C., Frank C., Groben B., Schack T., Verbal instructions and motor learning: How analogy and explicit instructions influence the development of mental representations and tennis serve performance, Front. Psychol, 11, pp. 1-12, (2020); Wulf G., Hoss M., Prinz W., Wulf G., Hot M., Instructions for motor learning : Differential instructions for motor learning : Differential effects of internal versus external focus of attention, J. Mot. Behav, 30, pp. 169-179, (1998); Aboodarda S.J., Yusof A., Osman N.A.A., Thompson M.W., Mokhtar A.H., Enhanced performance with elastic resistance during the eccentric phase of a countermovement jump, Int. J. Sports. Physiol. Perform, 8, pp. 181-187, (2013); Bobbert M.F., Gerritsen K.G.M., Litjens M.C.A., Van Soest A.J., Why is countermovement jump height greater than squat jump height?, Med. Sci. Sports Exerc, 28, pp. 1402-1412, (1996); Ibrahim R., Kingma I., de Boode V., Faber G.S., van Dieen J.H., The effect of preparatory posture on goalkeeper’s diving save performance in football, Front. Sports Act.Liv, 1, pp. 1-10, (2019); Carlos G.A., Futebol - Treinamento Desportivo De Alto Rendimento, 1, (2008); Palucci Vieira L.H., Et al., Automatic markerless motion detector method against traditional digitisation for 3-dimensional movement kinematic analysis of ball kicking in soccer field context, Int. J. Environ. Res. Public Health, 19, 3, (2022); Winter D.A., Biomechanics and Motor Control of Human Movement: Fourth Edition, Biomechanics and Motor Control of Human Movement: Fourth Edition, (2009); Zatsiorsky V., Seluyanov V., Vivo body segment inertial parameters determination using a gamma-scanner method, Biomechanics of Human Movement, pp. 186-202, (1990); de Leva P., Adjustments to zatsiorsky-seluyanov’s segment inertia parameters, J. Biomechanics, 29, pp. 1223-1230, (1996); Zatsiorsky V., Kinetics of Human Motion, (2002); Koga H., Et al., Mechanisms for noncontact anterior cruciate ligament injuries: Knee joint kinematics in 10 injury situations from female team handball and basketball, Am. J. Sports Med, 38, pp. 2218-2225, (2010); Bedo B.L.S., Et al., Influence of side uncertainty on knee kinematics of female handball athletes during sidestep cutting maneuvers, J Appl Biomech, (2021); Pataky T.C., Generalized n-dimensional biomechanical field analysis using statistical parametric mapping, J. Biomech, 43, pp. 1976-1982, (2010); Suzuki S., Togari H., Isokawa M., Ohashi J., Ohgushi T., Analysis ofthe goalkeeper’s diving motion, First World Congress of Science and Football, pp. 468-475, (1987); Savelsbergh G.J.P., Williams A.M., Van Der Kamp J., Ward P., Visual search, anticipation and expertise in soccer goalkeepers, J. Sports Sci, 20, pp. 279-287, (2002); Savelsbergh G.J.P., Van der Kamp J., Williams A.M., Ward P., Anticipation and visual search behaviour in expert soccer goalkeepers, Ergonomics, 48, pp. 1686-1697, (2005); van der Kamp J., Dicks M., Navia J.A., Noel B., Goalkeeping in the soccer penalty kick: It is time we take affordance-based control seriously!, German J. Exerc. Sport Res, 48, pp. 169-175, (2018); Wang Y., Ji Q., Zhou C., Effect of prior cues on action anticipation in soccer goalkeepers, Psychol. Sport Exerc, 43, pp. 137-143, (2019); Diaz G.J., Fajen B.R., Phillips F., Anticipation from biological motion: The goalkeeper problem, J. Exp. Psychol. Hum. Percept. Perform, 38, pp. 848-864, (2012)","R.L.M. Monteiro; Biomechanics and Motor Control Laboratory, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Av. Bandeirantes, 3900, Monte Alegre, SP, 14049-900, Brazil; email: rafaell_mmonteiro@usp.br","","Nature Research","20452322","","","38702374","English","Sci. Rep.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85192088900" "Schmidt C.; Perroulaz M.; Perez Y.; Rosset J.; Wüthrich G.; Malatesta D.; Samozino P.","Schmidt, Christian (58868867300); Perroulaz, Mike (58868804700); Perez, Yago (58868775300); Rosset, Jérémie (58868932900); Wüthrich, Gabriel (58868962700); Malatesta, Davide (6507403362); Samozino, Pierre (14024773800)","58868867300; 58868804700; 58868775300; 58868932900; 58868962700; 6507403362; 14024773800","A New Way to Restrict Free Leg Movement During Unilateral Vertical Jump Test","2024","Journal of Applied Biomechanics","40","1","","21","28","7","0","10.1123/jab.2022-0296","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85184345061&doi=10.1123%2fjab.2022-0296&partnerID=40&md5=c0c4f2a042963172bdfb398b7b183d21","Performance Laboratory, Football Club FC Luzern, Luzern, Switzerland; Institute of Sport Sciences of the University of Lausanne (ISSUL), University of Lausanne, Lausanne, Switzerland; Sports and Health Center, Sports Service UNIL/EPFL, Lausanne, Switzerland; Univ Savoie Mont Blanc, Inter-university Laboratory of Motricity Biology, Chambéry, France","Schmidt C., Performance Laboratory, Football Club FC Luzern, Luzern, Switzerland; Perroulaz M., Institute of Sport Sciences of the University of Lausanne (ISSUL), University of Lausanne, Lausanne, Switzerland; Perez Y., Institute of Sport Sciences of the University of Lausanne (ISSUL), University of Lausanne, Lausanne, Switzerland; Rosset J., Sports and Health Center, Sports Service UNIL/EPFL, Lausanne, Switzerland; Wüthrich G., Performance Laboratory, Football Club FC Luzern, Luzern, Switzerland; Malatesta D., Institute of Sport Sciences of the University of Lausanne (ISSUL), University of Lausanne, Lausanne, Switzerland; Samozino P., Univ Savoie Mont Blanc, Inter-university Laboratory of Motricity Biology, Chambéry, France","The purpose of this investigation was (1) to test the effect of movement restriction of the free leg during unilateral vertical jump on performance and power output comparing 2 different jump techniques: flexed (Classic technique) and straight (FC Luzern technique) free leg, and (2) to test the correlation between performance and power output obtained using these 2 techniques. Twenty elite soccer players performed squat (SJ) and countermovement (CMJ) jumps on each leg. The jump height and peak power output were compared between the 2 techniques for both legs. The jump height and peak power were significantly higher for the classic test for SJ and CMJ (P < .001) with no side effects or interactions. The angular range of motion of the free leg was higher for the Classic test than for the FC Lucerne test (P < .001), with no difference in the angular range of motion of the trunk. A moderate correlation was found between the 2 techniques on peak power (SJ: r = .626; CMJ: r = .649) and jump height (SJ: r = .742; CMJ: r = .891). Consequently, FC Lucerne technique, limiting the contribution of the free leg, is more appropriate to assess lower limb strength capacities during unilateral jump test. © 2024 Human Kinetics, Inc.","jump height; jumping; lower limb strength; mechanical power; one leg","Athletic Performance; Biomechanical Phenomena; Humans; Leg; Movement; Muscle Strength; Muscle, Skeletal; Soccer; Jump height; Jump tests; Jumping; Low limb strength; Lower limb; Mechanical power; One leg; Peak power; Performance; Power output; acceleration; adult; Article; body mass; body weight; child; controlled study; countermovement jumping; elite athlete; extensor muscle; force; ground reaction force; height; human; human experiment; jumping; knee; knee flexion angle; knee function; leg movement; leg muscle; lower limb; male; muscle function; muscle strength; range of motion; soccer player; squatting (exercise); trunk; velocity; videorecording; young adult; athletic performance; biomechanics; leg; movement (physiology); muscle strength; skeletal muscle; soccer; Thermoelectric power","Cronin JB, Hansen KT., Strength and power predictors of sports speed, J Strength Cond Res, 19, pp. 349-357, (2005); Ronnestad BR, Kvamme NH, Sunde A, Raastad T., Short-term effects of strength and plyometric training on sprint and jump performance in professional soccer players, J Strength Cond Res, 22, 3, pp. 773-780, (2008); Hedrick A, Anderson JC., The vertical jump: a review of the literature and a team case study, J Strength Cond Res, 18, 1, pp. 7-12, (1996); Miller BP., The effects of plyometric training on the vertical jump performance of adult female subjects, Br J Sports Med, 16, 2, (1982); Bobbert MF, Gerritsen KG, Litjens MC, Van Soest AJ., Why is countermovement jump height greater than squat jump height?, Med Sci Sports Exerc, 28, 11, pp. 1402-1412, (1996); Klavora P., Vertical-jump tests: a critical review, J Strength Cond Res, 22, pp. 70-75, (2000); Hunter JP, Marshall RN., Effects of power and flexibility training on vertical jump technique, Med Sci Sports Exerc, 34, 3, pp. 478-486, (2010); Meylan C, Nosaka K, Green J, Cronin JB., Temporal and kinetic analysis of unilateral jumping in the vertical, horizontal, and lateral directions, J Sports Sci, 28, 5, pp. 545-554, (2010); Young WB, Behm DG., Effects of running, static stretching and practice jumps on explosive force production and jumping performance, J Sports Med Phys Fitness, 43, pp. 21-27, (2003); Young W, McLean B, Ardagna J., Relationship between strength qualities and sprinting performance, J Sports Med Phys Fitness, 35, pp. 13-19, (1995); Bracic M, Supej M, Peharec S, Bacic P, Coh M., An investigation of the influence of bilateral deficit on the counter-movement jump performance in elite sprinters, Kinesiology, 42, 1, pp. 73-81, (2010); Saez de Villarreal E, Requena B, Cronin JB., The effects of plyometric training on sprint performance: a meta-analysis, J Strength Cond Res, 26, pp. 575-584, (2012); Clark NC., Functional performance testing following knee ligament injury, Phys Ther Sport, 2, 2, pp. 91-105, (2001); Hopper DM, Strauss GR, Boyle JJ, Bell J., Functional recovery after anterior cruciate ligament reconstruction: a longitudinal perspective, Arch Phys Med Rehabil, 89, 8, pp. 1535-1541, (2008); Kotsifaki R, Sideris V, King E, Et al., Performance and symmetry measures during vertical jump testing at return to sport after ACL reconstruction, Br J Sports Med, 56, pp. 490-498, (2022); Ae M, Shibikawa K, Tada S, Hashihara Y., A bio-mechanical analysis of the segmental contribution to the take-off of the one-leg running jump for height, Biomechanics VIII A. Human Kinetics, pp. 737-745, (1983); Dapena J, McDonald C, Cappaert J., A regression analysis of high jumping technique, Int J Sport Biomech, 6, 3, pp. 246-261, (1990); Taylor JB, Ford KR, Nguyen AD, Shultz SJ., Biomechanical comparison of single- and double-leg jump landings in the sagittal and frontal plane, Orthop J Sports Med, 4, 6, (2016); Bobbert MF, De Graf WW, Jonk JN, Casius RLJ., Explanation of the bilateral deficit in human vertical squat jumping, J Appl Physiol, 100, 2, pp. 493-499, (2006); Challis JH., An investigation of the influence of bi-lateral deficit on human jumping, Hum Mov Sci, 17, 3, pp. 307-325, (1988); Van Soest AJ, Roebroeck ME, Bobbert MF, Huijing PA, Van Ingen Schenau GJ., A comparison of one-legged and two-legged countermovement jumps, Med Sci Sports Exerc, 17, 6, pp. 635-639, (1985); Vint PF, Hinrichs RN., Differences between one foot and two-foot vertical jump performances, J Appl Biomech, 12, 3, pp. 338-358, (1996); Ascenzi G, Ruscello B, Filetti C, Et al., Bilateral deficit and bilateral performance: relationship with sprinting and change of direction in elite youth soccer players, Sports, 8, 6, (2020); Fort-Vanmeerhaeghe A, Gual G, Romero-Rodriguez D, Unnitha V., Lower limb neuromuscular asymmetry in volleyball and basketball players, J Hum Kinet, 50, 1, pp. 135-143, (2016); Warren BY, Macdonald C, Flowers MA., Validity of double- and single-leg vertical jumps as tests of leg extensor muscle function, J Strength Cond Res, 15, 1, pp. 6-11, (2001); Sado N, Yoshioka S, Fukashiro S., Free-leg side elevation of pelvis in single-leg jump is a substantial advantage over double-leg jump for jumping height generation, J Biomech, 104, (2020); Lees A, Vanrenterghem J, Clercq DD., Understanding how an arm swing enhances performance in the vertical jump, J Biomech, 37, 12, pp. 1929-1940, (2004); Hinkle DE, Wiersma W, Jurs SG., Applied Statistics for the Behavioral Sciences, (2003); Hopkins WG., Spreadsheets for analysis of validity and reliability, Sportsci, 19, pp. 36-42, (2015); Luhtanen P, Komi PV., Segmental contribution to forces in vertical jump, Eur J Appl Physiol, 38, 3, pp. 181-188, (1978); Hara M, Shibayama A, Takeshita D, Fukashiro S., A comparison of the mechanical effect of arm swing and countermovement on the lower extremities in vertical jumping human, Hum Mov Sci, 27, 4, pp. 636-648, (2008); Morin JB, Jimenez-Reyes P, Brughelli M, Samozino P., When jump height is not a good indicator of lower limb maximal power output: theoretical demonstration, experimental evidence and practical solutions, Med Sci Sports, 49, 7, pp. 999-1006, (2019); Kotsifaki A, Rossom SV, Whiteley R, Et al., Single leg vertical jump performance identifies knee function deficits at return to sport after ACL reconstruction in male athletes, Br J Sport Med, 56, 9, pp. 490-498, (2022); Bardy B., Le paradigme de la double tâche. Intérêts pour le champ des habilités motrices complexes, Sci et motricité, 15, pp. 31-39, (1991); Hegner J., Physis, Bases théoriques, (2011)","C. Schmidt; Performance Laboratory, Football Club FC Luzern, Luzern, Switzerland; email: schmidtpatricia13@orange.fr","","Human Kinetics Publishers Inc.","10658483","","JABOE","37875253","English","J. Appl. Biomech.","Article","Final","","Scopus","2-s2.0-85184345061" "Cosendey J.L.; Merino-Muñoz P.; De Figueiredo P.R.C.; Cerda-Kohler H.; Brito C.J.; Aedo-Muñoz E.; Soto D.A.S.; Miarka B.","Cosendey, Jonatas Lopes (57996715600); Merino-Muñoz, Pablo (57221328367); De Figueiredo, Paulo Roberto Campos (57995807800); Cerda-Kohler, Hugo (56532510400); Brito, Ciro José (37058458300); Aedo-Muñoz, Esteban (57202025612); Soto, Dany Alexis Sobarzo (57216391319); Miarka, Bianca (37081636300)","57996715600; 57221328367; 57995807800; 56532510400; 37058458300; 57202025612; 57216391319; 37081636300","Effects of positions in the isokinetic assessment of knee flexors and extensors of professional soccer players","2022","Journal of Physical Education and Sport","22","11","357","2818","2825","7","1","10.7752/jpes.2022.11357","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143515109&doi=10.7752%2fjpes.2022.11357&partnerID=40&md5=42d5d94ed533874f02782518c246f34c","School of Physical Education and Sports, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; Núcleo de investigación en ciencias de la motricidad humana, Universidad Adventista de Chile, Chile; SAFERJ – Sindicato dos Atletas de Futebol do Estado do Rio de Janeiro, Brazil; Escuela de Ciencias del Deporte y Actividad Física, Facultad de Salud, Universidad Santo Tomás, Santiago, Chile; Unidad de Fisiología del Ejercicio, Centro de Innovación, Clínica MEDS, Santiago, Chile; Physical Education Department, Federal University of Juiz de Fora, Governador Valadares campus, Brazil; Universidad Metropolitana de Ciencias de La Educación, Chile; Escuela de Kinesiología, Facultad de Salud, Universidad Santo Tomás, Puerto Montt, Chile","Cosendey J.L., School of Physical Education and Sports, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; Merino-Muñoz P., School of Physical Education and Sports, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil, Núcleo de investigación en ciencias de la motricidad humana, Universidad Adventista de Chile, Chile; De Figueiredo P.R.C., School of Physical Education and Sports, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil, SAFERJ – Sindicato dos Atletas de Futebol do Estado do Rio de Janeiro, Brazil; Cerda-Kohler H., School of Physical Education and Sports, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil, Escuela de Ciencias del Deporte y Actividad Física, Facultad de Salud, Universidad Santo Tomás, Santiago, Chile, Unidad de Fisiología del Ejercicio, Centro de Innovación, Clínica MEDS, Santiago, Chile; Brito C.J., Physical Education Department, Federal University of Juiz de Fora, Governador Valadares campus, Brazil; Aedo-Muñoz E., School of Physical Education and Sports, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil, Universidad Metropolitana de Ciencias de La Educación, Chile; Soto D.A.S., Escuela de Kinesiología, Facultad de Salud, Universidad Santo Tomás, Puerto Montt, Chile; Miarka B., School of Physical Education and Sports, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil","The present study aims to verify the isokinetic assessment of knee extension and flexion in soccer players, comparing the performance between soccer positions. The sample comprised 136 professional soccer players from five cities belonging to Brazil's first division during the competitive season. Participants separated by player positions – Strikers (S=29, height: 178.9±6.3cm, weight: 78.2±11.1kg) Wingers (W=10, height: 173.7±4.7cm, weight: 71.3±7.4kg), Midfield (M=50, height: 177±5.9cm, weight: 74.5±8.8kg), Goalkeeper (G=14, height: 189.9±4.9cm, weight: 88.4±5.8kg), and Defenders (D=21, height: 186.8±3.5cm, weight: 83.1±6.8kg). The following variables were determined: left anterior peak torque (quadriceps) (LQPT); right anterior peak torque (quadriceps) (RQPT); left posterior peak torque (hamstrings) (LPPT); right posterior peak torque (hamstrings) (RPPT); right quadricep/ right hamstring ratio (RQUADS/RHAMS, using percentage) and left quadricep/ left hamstring ratio (RQUADS/RHAMS, using percentage) and the respective side-to-side comparisons (Deficit = Right – Left peak torque). The equipment used to perform isokinetic tests was a dynamometer by Biodex System 4®. Peak torque, maximum repetitions, the energy used during this work, energy used in total isokinetic assessment work, and anaerobic work capacity (W) used in total isokinetic evaluation work were compared by ANOVA One-way and Bonferroni; comparisons considered p ≤0.05. The results showed a significant difference between goalkeepers and defenders > wingers and midfield in peak torque, maximal repetition, total work, and anaerobic work capacity of left anterior peak torque, left posterior peak torque, and right posterior peak torque. Such information may be valuable for more efficient monitoring of muscle strength profiles, improving the application of athletes' training, and identifying risk factors for injury. © JPES.","biomechanics; kinetics; motor control; muscle strength; sports injury; training","","Ayala F., De Ste Croix M., Sainz de Baranda P., Santonja F., Absolute reliability of hamstring to quadriceps strength imbalance ratios calculated using peak torque, joint angle-specific torque and joint ROM-specific torque values, International journal of sports medicine, 33, 11, pp. 909-916, (2012); Bengtsson H., Ekstrand J., Walden M., Hagglund M., Muscle injury rate in professional football is higher in matches played within 5 days since the previous match: A 14-year prospective study with more than 130 000 match observations, British Journal of Sports Medicine, 52, 17, pp. 1116-1122, (2018); Manual, Biodex Multjoint Dynamometer, (1998); Byrd M. Travis, Wallace Brian J., Clasey Jody L., Bergstrom Haley C., Contributions of Lower-Body Strength Parameters to Critical Power and Anaerobic Work Capacity, The Journal of Strength & Conditioning Research, 35, 1, pp. 97-101, (2021); Chaouachi A., Haddad M., Castagna C., Wong D. P., Kaouech F., Chamari K., Behm D. G., Potentiation and recovery following lowand high-speed isokinetic contractions in boys, Pediatric Exercise Science, 23, 1, pp. 136-150, (2011); Cheung R., Smith A., Wong D., H:Q ratios and bilateral leg strength in college field and court sports players, Journal of Human Kinetics, 33, 1, pp. 63-71, (2012); Clemente F. M., Nikolaidis P. T., Rosemann T., Knechtle B., Dose-response relationship between external load variables, body composition, and fitness variables in professional soccer players, Frontiers in Physiology, 10, APR, pp. 1-9, (2019); de Mendonca D. L. C., Alonso A. C., D'Andrea Greve J. M., Garcez-Leme L. E., Assessment of the quality of life, muscle strength, and dynamic balance of elderly kendo players, Clinics, 72, 11, pp. 661-666, (2017); de Paula Lima P. O., Pinto Camelo P. R., Mascarenhas Ferreira V. M. L., do Nascimento P. J. S., Almeida Bezerra M., Almeida G. P. L., de Oliveira R. R., Evaluation of the isokinetic muscle function, postural control and plantar pressure distribution in capoeira players: a cross-sectional study, Muscle Ligaments and Tendons Journal, (2019); dos Santos Andrade M., de Lira C. A. B., de Carvalho Koffes F., Mascarin N. C., Benedito-Silva A. A., da Silva A. C., Isokinetic hamstrings-to-quadriceps peak torque ratio: The influence of sport modality, gender, and angular velocity, Journal of Sports Sciences, 30, 6, pp. 547-553, (2012); Elliott M. C. C. W., Zarins B., Powell J. W., Kenyon C. D., Hamstring muscle strains in professional football players: A 10-year review, American Journal of Sports Medicine, 39, 4, pp. 843-850, (2011); Esteves N.S., Brito M.A., Muller V.T., Brito C.J., Perez D.I.V., Slimani M., Bragazzi N.L., Miarka B., COVID-19 Pandemic Impacts on the Mental Health of Professional Soccer: Comparison of Anxiety Between Genders, Frontiers in Psychology, 12, (2021); Esteves N.S., Brito M.A., Soto D.A.S, Muller V.T., Brito C.J., Miarka B., Effects of the COVID-19 pandemic on the mental health of professional soccer teams: epidemiological factors associated with state and trait anxiety, Journal of Physical Education and Sport, 20, pp. 3038-3045, (2020); Freire L.A., Aedo-Munoz E., Soto D.A.S., Brito C.J., Miarka B., Soccer pacing strategy: chronological intra-comparison of the same soccer athletes, disputing with the same opponent during the same year, Journal of Physical Education and Sport, 22, pp. 1333-1339, (2022); Freire L.A., Brito M.A., Esteves N.S., Tannure M., Slimani M., Znazen H., Bragazzi N.L., Brito C.J., Soto D.A.S, Goncalves D., Miarka B., Running Performance of High-Level Soccer Player Positions Induces Significant Muscle Damage and Fatigue Up to 24 h Postgame, Frontiers in Psychology, 12, (2021); Freire L.A., Brito M.A., Munoz P.M., Perez D.I.V., Kohler H.C., Aedo-Munoz E., Slimani M., Brito C.J., Bragazzi N.L., Brito C.J., Znazen H., Miarka B., Match Running Performance of Brazilian Professional Soccer Players according to Tournament Types, Montenegrin Journal Of Sports Science And Medicine, 11, pp. 53-58, (2022); Freire L.A., Tannure M., Goncalves D., Aedo-Munoz E., Perez D.I.V., Brito C.J., Miarka B., Correlation between creatine kinase and match load in soccer: a case report, Journal of Physical Education and Sport, 20, pp. 1279-1283, (2020); Freire L.A., Tannure M., Sampaio M., Slimani M., Znazen H., Bragazzi N.L., Brito C.J., Soto D.A.S, Goncalves D., Miarka B., COVID-19-Related Restrictions and Quarantine COVID-19: Effects on Cardiovascular and Yo-Yo Test Performance in Professional Soccer Players, Frontiers in Psychology, 11, (2020); Fort-Vanmeerhaeghe A., Mila-Villarroel R., Pujol-Marzo M., Arboix-Alio J., Bishop C., Higher Vertical Jumping Asymmetries and Lower Physical Performance are Indicators of Increased Injury Incidence in Youth Team-Sport Athletes, Journal of Strength and Conditioning Research, 36, 8, pp. 2204-2211, (2022); Goncalves L. G. C., Clemente F. M., Vieira L. H. P., Bedo B., Puggina E. F., Moura F., Mesquita F., Santiago P. R. P., Almeida R., Aquino R., Effects of match location, quality of opposition, match outcome, and playing position on load parameters and players’ prominence during official matches in professional soccer players, Human Movement, 22, 3, pp. 35-44, (2021); Hannon J. P., Wang-Price S., Garrison J. C., Goto S., Bothwell J. M., Bush C. A., Normalized Hip and Knee Strength in Two Age Groups of Adolescent Female Soccer Players, Journal of Strength and Conditioning Research, 36, 1, pp. 207-211, (2022); Ibis S., Aktug Z. B., Iri R., Does individual-specific strength training have an effect upon knee muscle strength balances? Knee muscle strength balances, Journal of Musculoskeletal Neuronal Interactions, 18, 2, pp. 183-190, (2018); Kim C.-G., Jeoung B. J., Assessment of isokinetic muscle function in Korea male volleyball athletes, Journal of Exercise Rehabilitation, 12, 5, pp. 429-437, (2016); Ko K. J., Ha G. C., Kim D. W., Kang S. J., Effects of lower extremity injuries on aerobic exercise capacity, anaerobic power, and knee isokinetic muscular function in high school soccer players, Journal of Physical Therapy Science, 29, 10, pp. 1715-1719, (2017); Konrad A., Tilp M., Muscle and tendon tissue properties of competitive soccer goalkeepers and midfielders, German Journal of Exercise and Sport Research, 48, 2, pp. 245-251, (2018); Lee J. W. Y., Mok K. M., Chan H. C. K., Yung P. S. H., Chan K. M., Eccentric hamstring strength deficit and poor hamstring-to-quadriceps ratio are risk factors for hamstring strain injury in football: A prospective study of 146 professional players, Journal of Science and Medicine in Sport, 21, 8, pp. 789-793, (2018); Martin-Garcia A., Castellano J., Mendez Villanueva A., Gomez-Diaz A., Cos F., Casamichana D., Physical demands of ball possession games in relation to the most demanding passages of a competitive match, Journal of Sports Science and Medicine, 19, 1, pp. 1-9, (2020); Oliveira M. A. C., Dambroz F., Santos R., Moniz F., VAR implementation and soccer team performance: a comparison between the 2014 and 2018 World Cups, Journal of Physical Education and Sport, 21, pp. 3208-3213, (2021); Ramos S., Corso M., Brown A., Simao R., Dias I., Asymmetries of Isokinetic Strength and Flexibility in Young Soccer Players: a Systematic Review, Human Movement, 23, 4, pp. 21-33, (2022); Ruas C. V., Minozzo F., Pinto M. D., Brown L. E., Pinto R. S., Lower-extremity strength ratios of professional soccer players according to field position, Journal of Strength and Conditioning Research, 29, 5, pp. 1220-1226, (2015); Slimani M., Znazen H., Miarka B., Bragazzi N.L., Maximum Oxygen Uptake of Male Soccer Players According to their Competitive Level, Playing Position and Age Group: Implication from a Network Meta-Analysis, Journal of Human Kinetics, 66, pp. 233-245, (2019); Sliwowski R., Grygorowicz M., Hojszyk R., Jadczak L., The isokinetic strength profile of elite soccer players according to playing position, PLoS ONE, 12, 7, pp. 1-13, (2017); Struzik A., Siemienski A., Bober T., Pietraszewski B., Ratios of torques of antagonist muscle groups in female soccer players, Acta of Bioengineering and Biomechanics, 20, 1, pp. 153-158, (2018); Szulc A. M., Busko K., Sandurska E., Kolodziejczyk M., The biomechanical characteristics of elite deaf and hearing female soccer players: Comparative analysis, Acta of Bioengineering and Biomechanics, 19, 4, pp. 127-133, (2017); Tourny-Chollet C., Leroy D., Leger H., Beuret-Blanquart F., Isokinetic knee muscle strength of soccer players according to their position, Isokinetics and Exercise Science, 8, 4, pp. 187-193, (2000); Van Dyk N., Wangensteen A., Vermeulen R., Whiteley R. O. D., Bahr R., Tol J. L., Witvrouw E., Similar Isokinetic Strength Preinjury and at Return to Sport after Hamstring Injury, Medicine and Science in Sports and Exercise, 51, 6, pp. 1091-1098, (2019); Wakeling J. M., Lee S. S. M., Arnold A. S., Miara M. D. B., Biewener A. A., A muscle’s force depends on the recruitment patterns of its fibers, Annals of Biomedical Engineering, 40, 8, pp. 1708-1720, (2012); Yapici A., Findikoglu G., Dundar U., Do isokinetic angular velocity and contraction types affect the predictors of different anaerobic power tests?, Journal of Sports Medicine and Physical Fitness, 56, 4, pp. 383-391, (2016); Yilmaz A. K., Kabadayi M., Bostanci O., Ozdal M., Mayda M. H., Analysis of isokinetic knee strength in soccer players in terms of selected parameters, Physical Education of Students, 23, 4, pp. 209-216, (2018)","B. Miarka; School of Physical Education and Sports, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; email: miarkasport@hotmail.com","","Editura Universitatii din Pitesti","22478051","","","","English","J. Phys. Educ. Sport","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85143515109" "Alonso-Callejo A.; García-Unanue J.; Guitart-Trench M.; Majano C.; Gallardo L.; Felipe J.L.","Alonso-Callejo, Antonio (57801933800); García-Unanue, Jorge (55340222400); Guitart-Trench, Marc (57196374477); Majano, Carlos (57220543166); Gallardo, Leonor (25936144300); Felipe, Jose Luis (55340056400)","57801933800; 55340222400; 57196374477; 57220543166; 25936144300; 55340056400","Validity and Reliability of the Acceleration-Speed Profile for Assessing Running Kinematics' Variables Derived from the Force-Velocity Profile in Professional Soccer Players","2024","Journal of Strength and Conditioning Research","38","3","","563","570","7","0","10.1519/JSC.0000000000004637","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85186505879&doi=10.1519%2fJSC.0000000000004637&partnerID=40&md5=0ac4fc3fbd394338ae56134b6e0b3622","IGOID Research Group, Department of Physical Activity and Sport Sciences, University of Castilla-La Mancha, Toledo, Spain; Medical and Performance Department, Barça Innovation Hub, Futbol Club Barcelona, Barcelona, Spain; Performance Analysis Department, UD Las Palmas, Las Palmas de Gran Canaria, Spain","Alonso-Callejo A., IGOID Research Group, Department of Physical Activity and Sport Sciences, University of Castilla-La Mancha, Toledo, Spain; García-Unanue J., IGOID Research Group, Department of Physical Activity and Sport Sciences, University of Castilla-La Mancha, Toledo, Spain; Guitart-Trench M., Medical and Performance Department, Barça Innovation Hub, Futbol Club Barcelona, Barcelona, Spain; Majano C., IGOID Research Group, Department of Physical Activity and Sport Sciences, University of Castilla-La Mancha, Toledo, Spain; Gallardo L., IGOID Research Group, Department of Physical Activity and Sport Sciences, University of Castilla-La Mancha, Toledo, Spain; Felipe J.L., IGOID Research Group, Department of Physical Activity and Sport Sciences, University of Castilla-La Mancha, Toledo, Spain, Performance Analysis Department, UD Las Palmas, Las Palmas de Gran Canaria, Spain","Alonso-Callejo, A, García-Unanue, J, Guitart-Trench, M, Majano, C, Gallardo, L, and Felipe, J. Validity and reliability of the acceleration-speed profile for assessing running kinematics' variables derived from the force-velocity profile in professional soccer players. J Strength Cond Res 38(3): 563-570, 2024 - The aim of this research is to assess the validity and reliability of the acceleration-speed profile (ASP) for measuring the mechanical variables of running kinematics when compared with the force-velocity profile (FVP) obtained by reference systems. The ASP and FVP of 14 male players of an elite football club were assessed during a competitive microcycle. Three ASPs were tested according to the number and type of sessions included in its plotting (ASP1: 5 training sessions and competitive match; ASP2: 5 training sessions; ASP3: competitive match). Force-velocity profile was tested 4 days before match (MD-4) with a 30-m linear sprint using 3 previously validated devices (encoder, mobile App, and global positioning system). Level of significance was p < 0.05. Acceptable reliability (intraclass correlation coefficient > 0.5) was found between the ASP1 and the encoder for all variables (F0-A0, V0-S0, and Vmax). The more reliable ASP method was the ASP1 showing a lower bias than the ASP2 and ASP3 methods for almost all variables and reference systems. For ASP1, lower mean absolute error (MAE: 0.3-0.5) and higher correlation (P-M corr: 0.57-0.92) were found on variables related to the velocity in comparison with variables related to the early acceleration phase (F0-A0; MAE: 0.49-0.63; P-M corr: 0.13-0.41). Acceleration-speed profile, when computed with data from a complete competitive week, is a reliable method for analyzing variables derived from velocity and acceleration kinematics. From these results, practitioners could implement ASP and the applications of the FVP previously studied, such as resistance training prescription, performance assessment, and return-to-play management. © 2024 NSCA National Strength and Conditioning Association. All rights reserved.","evaluation; football; GPS; linear encoder; performance; sprint","Acceleration; Athletic Performance; Biomechanical Phenomena; Geographic Information Systems; Humans; Male; Reproducibility of Results; Running; Soccer; acceleration; athletic performance; biomechanics; geographic information system; human; male; reproducibility; running; soccer","Allen T., Taberner M., Zhilkin M., Rhodes D., Running more than before? the evolution of running load demands in the English Premier League, Int J Sports Sci Coach, (2023); Alonso-Callejo A., Garcia-Unanue J., Perez-Guerra A., Et al., Effect of playing position and microcycle days on the acceleration speed profile of elite football players, Sci Rep, 12, (2022); Baena-Raya A., Garcia-Mateo P., Garcia-Ramos A., Rodriguez-Perez M.A., Soriano-Maldonado A., Delineating the potential of the vertical and horizontal force-velocity profile for optimizing sport performance: A systematic review, J Sports Sci, 40, pp. 331-344, (2022); Bastida Castillo A., Gomez Carmona C.D., De La Cruz Sanchez E., Pino Ortega J., Accuracy, intra-and inter-unit reliability, and comparison between GPS and UWB-based position-tracking systems used for time-motion analyses in soccer, Eur J Sport Sci, 18, pp. 450-457, (2018); Bowen L., Gross A.S., Gimpel M., Bruce-Low S., Li F.X., Spikes in acute:chronic workload ratio (ACWR) associated with a 5-7 times greater injury rate in English Premier League football players: A comprehensive 3-year study, Br J Sports Med, 54, pp. 731-739, (2020); Buchheit M., Allen A., Poon T.K., Et al., Integrating different tracking systems in football: Multiple camera semi-automatic system, local position measurement and GPS technologies, J Sports Sci, 32, pp. 1844-1857, (2014); Chambers R., Gabbett T.J., Cole M.H., Beard A., The use of wearable microsensors to quantify sport-specific movements, Sports Med, 45, pp. 1065-1081, (2015); Clavel P., Leduc C., Morin J.-B., Et al., Concurrent validity and reliability of sprinting force-velocity profile assessed with GPS devices in elite athletes, Int J Sports Physiol Perform, 17, pp. 1527-1531, (2022); De Hoyo M., Sanudo B., Suarez-Arrones L., Et al., Analysis of the acceleration profile according to initial speed and positional role in elite professional male soccer players, J Sports Med Phys Fitness, 58, pp. 1774-1780, (2017); Di Salvo V., Baron R., Gonzalez-Haro C., Et al., Sprinting analysis of elite soccer players during European Champions League and UEFA Cup matches, J Sports Sci, 28, pp. 1489-1494, (2010); Faude O., Koch T., Meyer T., Straight sprinting is the most frequent action in goal situations in professional football, J Sports Sci, 30, pp. 625-631, (2012); Fernandez-Galvan L.M., Boullosa D., Jimenez-Reyes P., Cuadrado-Penafiel V., Casado A., Examination of the sprinting and jumping force-velocity profiles in young soccer players at different maturational stages, Int J Environ Res Public Health, 18, (2021); Fornasier-Santos C., Arnould A., Jusseaume J., Et al., Sprint acceleration mechanical outputs derived from position-or velocity-time data: A multi-system comparison study, Sensors, 22, (2022); Guitart M., Casals M., Casamichana D., Et al., Use of GPS to measure external load and estimate the incidence of muscle injuries in men's football: A novel descriptive study, PLoS One, 17, (2022); Haugen T.A., Soccer seasonal variations in sprint mechanical properties and vertical jump performance, Kinesiology, 50, pp. 102-108, (2018); Jimenez-Reyes P., Garcia-Ramos A., Parraga-Montilla J.A., Et al., Seasonal changes in the sprint acceleration force-velocity profile of elite male soccer players, J Strength Cond Res, 36, pp. 70-74, (2020); Jimenez-Reyes P., Samozino P., Garcia-Ramos A., Et al., Relationship between vertical and horizontal force-velocity-power profiles in various sports and levels of practice, PeerJ, 6, (2018); Johnston R.J., Watsford M.L., Kelly S.J., Pine M.J., Spurrs R.W., Validity and interunit reliability of 10 Hz and 15 Hz GPS units for assessing athlete movement demands, J Strength Cond Res, 28, pp. 1649-1655, (2014); Lacome M., Peeters A., Mathieu B., Et al., Can we use GPS for assessing sprinting performance in rugby sevens? A concurrent validity and between-device reliability study, Biol Sport, 36, pp. 25-29, (2019); Lahti J., Jimenez-Reyes P., Cross M.R., Et al., Individual sprint force-velocity profile adaptations to in-season assisted and resisted velocity-based training in professional rugby, Sports, 8, (2020); Mendiguchia J., Edouard P., Samozino P., Et al., Field monitoring of sprinting power-force-velocity profile before, during and after hamstring injury: Two case reports, J Sports Sci, 34, pp. 535-541, (2016); Morin J.-B., Le Mat Y., Osgnach C., Et al., Individual acceleration-speed profile in-situ: A proof of concept in professional football players, J Biomech, 123, (2021); Morin J.-B., Samozino P., Murata M., Cross M.R., Nagahara R., A simple method for computing sprint acceleration kinetics from running velocity data: Replication study with improved design, J Biomech, 94, pp. 82-87, (2019); Morin J., Samozino P., Bonnefoy R., Edouard P., Belli A., Direct measurement of power during one single sprint on treadmill, J Biomech, 43, pp. 1970-1975, (2010); Rabita G., Dorel S., Slawinski J., Et al., Sprint mechanics in world-class athletes: A new insight into the limits of human locomotion, Scand J Med Sci Sports, 25, pp. 583-594, (2015); Robles-Ruiz J., Baena-Raya A., Jimenez-Reyes P., Soriano-Maldonado A., Rodriguez-Perez M.A., Horizontal versus vertical force application: Association with the change of direction performance in soccer players, Eur J Sport Sci, 23, pp. 28-35, (2022); Romero-Franco N., Jimenez-Reyes P., Castano-Zambudio A., Et al., Sprint performance and mechanical outputs computed with an iPhone app: Comparison with existing reference methods, Eur J Sport Sci, 17, pp. 386-392, (2017); Samozino P., Edouard P., Sangnier S., Et al., Force-velocity profile: Imbalance determination and effect on lower limb ballistic performance, Int J Sports Med, 35, pp. 505-510, (2013); Samozino P., Rabita G., Dorel S., Et al., A simple method for measuring power, force, velocity properties, and mechanical effectiveness in sprint running, Scand J Med Sci Sports, 26, pp. 648-658, (2016)","A. Alonso-Callejo; IGOID Research Group, Department of Physical Activity and Sport Sciences, University of Castilla-La Mancha, Toledo, Spain; email: antonio.alonso.callejo@gmail.com","","NSCA National Strength and Conditioning Association","10648011","","","37831781","English","J. Strength Cond. Res.","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85186505879" "Nocciolino L.M.; Lüscher S.H.; Pilot N.; Pisani L.; Mackler L.; Cointry G.R.; Ireland A.; Rittweger J.; Ferretti J.L.; Capozza R.F.","Nocciolino, Laura M. (25633225500); Lüscher, Sergio H. (57189351783); Pilot, Nicolás (57204558191); Pisani, Leandro (57204559688); Mackler, Leandro (57210121407); Cointry, Gustavo R. (6602581718); Ireland, Alex (54684130000); Rittweger, Jörn (7004313911); Ferretti, José L. (7102140041); Capozza, Ricardo F. (6701420013)","25633225500; 57189351783; 57204558191; 57204559688; 57210121407; 6602581718; 54684130000; 7004313911; 7102140041; 6701420013","Original dynamometric and tomographic evidence of site-specific muscle effects on bone structure. towards a wider scope on the bone mechanostat concept; [Evidencia original directa (dinamométrico-tomográfica) de la influencia sitio-específica de la musculatura sobre la estructura ósea. hacia una concepción más amplia del mecanostato]","2018","Actualizaciones en Osteologia","14","3","","178","183","5","1","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85069506473&partnerID=40&md5=5182194bea5ccfd551e43485f122dbda","Centro de Estudios de Metabolismo Fosfocálcico (CEMFoC), Hospital Provincial del Centenario y Facultad de Ciencias Médicas, UNR, Rosario, Argentina; Unidad de Estudios Biomecánicos Osteo-Musculares (UDEBOM), Centro Universitario de Asistencia, Docencia e Investigación (CUADI), Universidad Gran Rosario (UGR), Rosario, Argentina; School of Healthcare Science, Manchester Metropolitan University (MMU), Manchester, United Kingdom; Division of Space Physiology, German Space Agency (DLR), Institute of Aerospace Medicine, Colonia, Germany","Nocciolino L.M., Centro de Estudios de Metabolismo Fosfocálcico (CEMFoC), Hospital Provincial del Centenario y Facultad de Ciencias Médicas, UNR, Rosario, Argentina, Unidad de Estudios Biomecánicos Osteo-Musculares (UDEBOM), Centro Universitario de Asistencia, Docencia e Investigación (CUADI), Universidad Gran Rosario (UGR), Rosario, Argentina; Lüscher S.H., Centro de Estudios de Metabolismo Fosfocálcico (CEMFoC), Hospital Provincial del Centenario y Facultad de Ciencias Médicas, UNR, Rosario, Argentina; Pilot N., Unidad de Estudios Biomecánicos Osteo-Musculares (UDEBOM), Centro Universitario de Asistencia, Docencia e Investigación (CUADI), Universidad Gran Rosario (UGR), Rosario, Argentina; Pisani L., Unidad de Estudios Biomecánicos Osteo-Musculares (UDEBOM), Centro Universitario de Asistencia, Docencia e Investigación (CUADI), Universidad Gran Rosario (UGR), Rosario, Argentina; Mackler L., Centro de Estudios de Metabolismo Fosfocálcico (CEMFoC), Hospital Provincial del Centenario y Facultad de Ciencias Médicas, UNR, Rosario, Argentina; Cointry G.R., School of Healthcare Science, Manchester Metropolitan University (MMU), Manchester, United Kingdom; Ireland A., Division of Space Physiology, German Space Agency (DLR), Institute of Aerospace Medicine, Colonia, Germany; Rittweger J., Division of Space Physiology, German Space Agency (DLR), Institute of Aerospace Medicine, Colonia, Germany; Ferretti J.L., Centro de Estudios de Metabolismo Fosfocálcico (CEMFoC), Hospital Provincial del Centenario y Facultad de Ciencias Médicas, UNR, Rosario, Argentina, Unidad de Estudios Biomecánicos Osteo-Musculares (UDEBOM), Centro Universitario de Asistencia, Docencia e Investigación (CUADI), Universidad Gran Rosario (UGR), Rosario, Argentina; Capozza R.F., Centro de Estudios de Metabolismo Fosfocálcico (CEMFoC), Hospital Provincial del Centenario y Facultad de Ciencias Médicas, UNR, Rosario, Argentina, Unidad de Estudios Biomecánicos Osteo-Musculares (UDEBOM), Centro Universitario de Asistencia, Docencia e Investigación (CUADI), Universidad Gran Rosario (UGR), Rosario, Argentina","To analyze the direct impact of muscle contractions on the structure of bones, we determined the cortical cross-sectional area (CtA), volumetric mineral density (vBMDc) and the CtA-adjusted moments of inertia for anterior- posterior and lateral bending (MIap, MIlat), and the .distribution/quality’ (d/c) relationships between MIs and vBMDc (which describe the efficiency of the biomechanical optimization of cortical design by bone mechanostat) in 18 serial scans taken throughout the fibula of the dominant side (pQCT), and the jump and the foot-lateral-rotation forces (computed dynamometry) of 22 healthy men aged 18-33 years, who had been trained in competitive soccer for more than 4 years, and of 9 untrained, agematched controls. Trained individuals showed higher MI values as a function of the rotative force of the foot (not the jumping force). The adjustment of these relationships was homogeneous for MIap throughout the bone, but variable (poorer distally and higher proximally, at the insertion area of peroneus muscles) for MIlat, this latter being paralleled by poor adjustments of the corresponding, d/c relationships (architectural effect independent of tissue stiffness). These findings,1. Show the direct influence of the traction force of peroneal muscles on proximal fibula structure close to the insertion area, and 2. Suggest that, in the studied conditions, the bone mechanostat would proceed beyond its known conception as a regulatory mechanism of structural bone strength. © 2018, Asociacion Argentina de Osteologia y Metabolismo Mineral. All rights reserved.","Bone mechanostat; Dynamometry; Fibula; Muscle-bone interactions; pQCT","adult; Article; biomechanics; bone density; bone radiography; bone scintiscanning; bone strength; bone structure; clinical article; computer assisted tomography; cross-sectional study; dynamometry; fibula; follow up; human; normal human","Capozza R.F., Feldman S., Mortarino P., Et al., Structural analysis of the human tibia by tomographic (pQCT) serial scans, J Anat, 216, 4, pp. 470-481, (2010); Feldman S., Capozza R.F., Mortarino P.A., Et al., Site and sex effects on tibia structure in distance runners and untrained people, Med Sci Sports Exerc, 44, 8, pp. 1580-1588, (2012); Ireland A., Capozza R.F., Cointry G.R., Nocciolino L., Ferretti J.L., Rittweger J., Meagre effects of disuse on the human fibula are not explained by bone size or geometry, Osteoporos Int, 28, 2, pp. 633-641, (2017); Cointry G.R., Nocciolino L., Ireland A., Et al., Structural differences in cortical shell properties between upper and lower human fibula as described by pQCT serial scans. A biomechanical interpretation, Bone, 90, 1, pp. 185-194, (2016); Capozza R.F., Rittweger J., Reina P.S., Et al., Pqctassessed relationships between diaphyseal design and cortical bone mass and density in the tibiae of healthy sedentary and trained men and women. Hylonome Publications, J Musculoskeletal & Neuronal Interactions, 2, pp. 195-205, (2013); Frost H.M., The Utah Paradigm of skeletal physiology, (2005); Huiskes R., If bone is the answer, then what is the question?, J Anat, 197, pp. 145-156, (2000); Marchi D., Relative strength of the tibia and fibula and locomotor behavior in hominoids, J Hum Evol, 53, 6, pp. 647-655, (2007); Pearson O.M., Lieberman D.E., The aging of Wolff’s “law”: Ontogeny and responses to mechanical loading in cortical bone, Am J Phys Anthropol, 39, pp. 63-99, (2004)","J.L. Ferretti; Centro de Estudios de Metabolismo Fosfocálcico (CEMFoC), Hospital Provincial del Centenario y Facultad de Ciencias Médicas, UNR, Rosario, Argentina; email: joselferreti@gmail.com","","Asociacion Argentina de Osteologia y Metabolismo Mineral","16698975","","","","Spanish","Actual. Osteologia","Article","Final","","Scopus","2-s2.0-85069506473" "Silvers H.J.; Mandelbaum B.R.; Adeniji O.; Insler S.; Bizzini M.; Dvorak J.","Silvers, Holly J. (6602624274); Mandelbaum, Bert R. (7004262150); Adeniji, Ola (56940531700); Insler, Stephanie (56940562400); Bizzini, Mario (11141540200); Dvorak, Jiri (7202106693)","6602624274; 7004262150; 56940531700; 56940562400; 11141540200; 7202106693","The Efficacy Of The Fifa 11+ Injury Prevention Program In The Collegiate Male Soccer Player","2014","Orthopaedic Journal of Sports Medicine","2","","","","","","1","10.1177/2325967114S00082","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978937992&doi=10.1177%2f2325967114S00082&partnerID=40&md5=2fddd1a56ac882273f42cfa9e334fff4","Santa Monica Sports Medicine Foundation, Santa Monica, CA, United States; Santa Monica Orthopaedic and Sports Medicine, Santa Monica, CA, United States; Schulthess Clinic, Zurich, Switzerland; Schulthess KlinikSpine Unit, Zurich, Switzerland","Silvers H.J., Santa Monica Sports Medicine Foundation, Santa Monica, CA, United States; Mandelbaum B.R., Santa Monica Orthopaedic and Sports Medicine, Santa Monica, CA, United States; Adeniji O., Santa Monica Sports Medicine Foundation, Santa Monica, CA, United States; Insler S., Santa Monica Sports Medicine Foundation, Santa Monica, CA, United States; Bizzini M., Schulthess Clinic, Zurich, Switzerland; Dvorak J., Schulthess KlinikSpine Unit, Zurich, Switzerland","Objectives: To examine the efficacy of the FIFA 11+ injury prevention program in Men’s NCAA collegiate soccer. Methods: A prospective randomized controlled trial was conducted in Division I and Division II NCAA men’s soccer teams during the Fall, 2012 season. Every athletic director, head soccer coach and head athletic trainer from each Divion I and Division II member institution with a men’s collegiate soccer program (N=411) was contacted via a formal letter, email and phone call. Sixty-one member institutions consented to participate. Human ethics review board approval was obtained through Quorum IRB, Seattle, WA, USA. After randomization was completed, the intervention group received an instructional DVD, teaching manual and exercise placards thoroughly describing the FIFA 11+ intervention. An injury surveillance database was utilized (HealtheAthleteTM, Overland Park, Kansas). Every athletic exposure, injury incurred, utilization of the 11+ program and compliance data was entered weekly. Sixty-one institutions completed the study: 34 control institutions (N=850 athletes) and 27 intervention institutions (N=675 athletes). The FIFA 11+ program served as the intervention program over the course of one collegiate season. The warm-up was utilized two to three times per week for the duration of the season. Results: In the intervention Group (IG), 285 Injuries were reported (mean=10.56 injuries/team+/-3.64) compared to 665 Injuries (mean=20.15 injuries +/- 11.01) in the control group (CG). The number of athletic exposures was 35,226 (Games: 10,935 AE, Practice: 24,291 AE) for the IG and 44,212 (Games: 13,624 AE, Practice: 30,588 AE) in the CG). The incidence rate (IR) was 8.09/1,000 AE (95% CI) in the IG compared to 15.04/1000 AE (CI=95%) in the CG (p=0.00117). Total days missed due to injury was 2824 (mean=9.94) in the IG compared to 8776 days (mean =13.20) in the CG. Conclusion: The FIFA 11+ was shown to significantly reduce injury rates and time loss in the competitive male collegiate soccer player in a statistically significant manner. There was a significant reduction in ACL injuries, hamstring injuries and ankle sprains in the intervention group compared to the control group. A biomechanical analysis has been planned in order to fully understand the neuromuscular changes imparted onto the participating athlete by the FIFA 11+ program. © 2014, © The Author(s) 2014.","","absenteeism; Article; athlete; biomechanics; college student; controlled study; disease surveillance; human; intervention study; major clinical study; male; morbidity; multicenter study; priority journal; program efficacy; prospective study; protocol compliance; soccer; sport injury","","","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-84978937992" "Dupré T.; Potthast W.","Dupré, Thomas (57194794521); Potthast, Wolfgang (23035844800)","57194794521; 23035844800","Are sprint accelerations related to groin injuries? A biomechanical analysis of adolescent soccer players","2022","Sports Biomechanics","","","","","","","1","10.1080/14763141.2022.2133740","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85140106902&doi=10.1080%2f14763141.2022.2133740&partnerID=40&md5=24a5b5c94aca2eb0f65916edf1a2021a","Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, Germany; Department of Exercise Science, Olympic Training Centre Rhineland-Palatinate/Saarland, Mainz, Germany","Dupré T., Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, Germany, Department of Exercise Science, Olympic Training Centre Rhineland-Palatinate/Saarland, Mainz, Germany; Potthast W., Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, Germany","Groin injuries have one of the highest incidences in soccer and can be career threatening, especially for adolescents, due to their high recurrence rate. Quick accelerations have been connected to groin injuries along with kicking and change of directions. Purpose of this study was to examine the hip joint kinematics, kinetics and the muscle forces of adductor longus and gracilis during first ground contact of a linear sprint acceleration performed by adolescent soccer players. Twenty-two male participants were investigated with 3D motion capture and two force plates. Inverse dynamics were used to calculate the kinematics, kinetics and muscle forces. The kinematics show a constant extension during the stance phase and a quick transition from an abduction to an adduction movement at 90% stance, which coincides with the highest forces in adductor longus and gracilis. This indicates a high load on the adductor muscles due to eccentric contractions combined with high muscle forces in the adductors. Compared to previously investigated inside passing and change of direction movements, adductor muscle forces and angular velocities are higher in this study. Therefore, it is suggested that sprint accelerations are likely to be connected to the development of groin injuries in adolescent soccer players. © 2022 International Society of Biomechanics in Sports.","adductors; adolescents; Groin injuries; injury risk; soccer","","Bezodis N.E., Willwacher S., Salo A.I.T., The biomechanics of the track and field sprint start: A narrative review, Sports Medicine, 49, 9, pp. 1345-1364, (2019); Brazil A., Exell T., Wilson C., Willwacher S., Bezodis I., Irwin G., Lower limb joint kinetics in the starting blocks and first stance in athletic sprinting, Journal of Sports Sciences, pp. 1-7, (2016); Brophy R.H., Backus S.I., Pansy B.S., Lyman S., Williams R.J., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, The Journal of Orthopaedic and Sports Physical Therapy, 37, 5, pp. 260-268, (2007); Bult H.J., Barendrecht M., Tak I.J.R., Injury risk and injury burden are related to age group and peak height velocity among talented male youth soccer players, Orthopaedic Journal of Sports Medicine, 6, 12, pp. 1-10, (2018); Charnock B.L., Lewis C.L., Garrett W.E., Queen R.M., Adductor longus mechanics during the maximal effort soccer kick, Sports Biomechanics, 8, 3, pp. 223-234, (2009); Chaudhari A.M.W., Jamison S.T., McNally M.P., Pan X., Schmitt L.C., Hip adductor activations during run-to-cut manoeuvres in compression shorts: Implications for return to sport after groin injury, Journal of Sports Sciences, 32, 14, pp. 1333-1340, (2014); Colyer S., Miles J.J., Crump F.J., Hall-Martinez J.P., Little G.S., Mallabone J., Cumming S.P., Association between biological maturation and anterior cruciate ligament injury risk factors during cutting, The Journal of Sports Medicine and Physical Fitness, 62, 8, (2021); Colyer S., Nagahara R., Takai Y., Salo A., The effect of biological maturity status on ground reaction force production during sprinting, Scandinavian Journal of Medicine & Science in Sports, 30, 8, pp. 1387-1397, (2020); Dupre T., Dietzsch M., Komnik I., Potthast W., David S., Agreement of measured and calculated muscle activity during highly dynamic movements modelled with a spherical knee joint, Journal of Biomechanics, 84, pp. 73-80, (2019); Dupre T., Funken J., Muller R., Mortensen K.R.L., Lysdal F.G., Braun M., Potthast W., Does inside passing contribute to the high incidence of groin injuries in soccer? a biomechanical analysis, Journal of Sports Sciences, 36, 16, pp. 1827-1835, (2018); Dupre T., Lysdal F.G., Funken J., Mortensen K.R.L., Muller R., Mayer J., Potthast W., Groin injuries in soccer: Investigating the effect of age on adductor muscle forces, Medicine and Science in Sports and Exercise, 52, 6, pp. 1330-1337, (2020); Dupre T., Potthast W., Groin injury risk of pubertal soccer players increases during peak height velocity due to changes in movement techniques, Journal of Sports Sciences, 38, 23, pp. 2661-2669, (2020); Dupre T., Tryba J., Potthast W., Muscle activity of cutting manoeuvres and soccer inside passing suggests an increased groin injury risk during these movements, Scientific Reports, 11, 1, (2021); Edwards S., Brooke H.C., Cook J.L., Distinct cut task strategy in Australian football players with a history of groin pain, Physical Therapy in Sport: Official Journal of the Association of Chartered Physiotherapists in Sports Medicine, 23, pp. 58-66, (2017); Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: The UEFA injury study, British Journal of Sports Medicine, 45, 7, pp. 553-558, (2011); Ekstrand J., Hilding J., The incidence and differential diagnosis of acute groin injuries in male soccer players, Scandinavian Journal of Medicine & Science in Sports, 9, 2, pp. 98-103, (1999); Emery C.A., Meeuwisse W.H., Risk factors for groin injuries in hockey, Medicine & Science in Sports & Exercise, 33, 9, pp. 1423-1433, (2001); Franklyn-Miller A., Richter C., King E., Gore S., Moran K., Strike S., Falvey E.C., Athletic groin pain (part 2): A prospective cohort study on the biomechanical evaluation of change of direction identifies three clusters of movement patterns, British Journal of Sports Medicine, 51, 5, pp. 460-468, (2017); Garrett W.E., Muscle strain injuries: Clinical and basic aspects, Medicine and Science in Sports and Exercise, 22, 4, pp. 436-443, (1990); Hagglund M., Walden M., Ekstrand J., Risk factors for lower extremity muscle injury in professional soccer: The UEFA injury study, The American Journal of Sports Medicine, 41, 2, pp. 327-335, (2013); 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Dupré; Institute of Biomechanics and Orthopedics, German Sport University Cologne, Cologne, Germany; email: thomasdupre02@gmail.com","","Routledge","14763141","","","","English","Sports Biomech.","Article","Article in press","","Scopus","2-s2.0-85140106902" "Barnes-Wood M.; McCloskey H.; Connelly S.; Gilchrist M.D.; Annaidh A.N.; Theobald P.S.","Barnes-Wood, M. (58819299400); McCloskey, H. (58819547500); Connelly, S. (58821029000); Gilchrist, M.D. (7005789718); Annaidh, A. Ni (57212381147); Theobald, P.S. (26653838800)","58819299400; 58819547500; 58821029000; 7005789718; 57212381147; 26653838800","Investigation of Head Kinematics and Brain Strain Response During Soccer Heading Using a Custom-Fit Instrumented Mouthguard","2024","Annals of Biomedical Engineering","52","4","","934","945","11","0","10.1007/s10439-023-03430-8","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85182688579&doi=10.1007%2fs10439-023-03430-8&partnerID=40&md5=93a7ee289beb1e3b9d2816631fc2e4ce","Cardiff School of Engineering, Cardiff University, The Parade, Cardiff, CF24 3AA, United Kingdom; Charles Owen & amp; Co, Croesfoel Industrial Park, Wrexham, LL14 4BJ, United Kingdom; Football Association of Wales (FIFA Medical Centre of Excellence), Hensol, Pontyclun, CF72 8JY, United Kingdom; School of Mechanical and Materials Engineering, University College Dublin, Belfield, Dublin 4, Ireland","Barnes-Wood M., Cardiff School of Engineering, Cardiff University, The Parade, Cardiff, CF24 3AA, United Kingdom, Charles Owen & amp; Co, Croesfoel Industrial Park, Wrexham, LL14 4BJ, United Kingdom; McCloskey H., Cardiff School of Engineering, Cardiff University, The Parade, Cardiff, CF24 3AA, United Kingdom, Charles Owen & amp; Co, Croesfoel Industrial Park, Wrexham, LL14 4BJ, United Kingdom; Connelly S., Football Association of Wales (FIFA Medical Centre of Excellence), Hensol, Pontyclun, CF72 8JY, United Kingdom; Gilchrist M.D., School of Mechanical and Materials Engineering, University College Dublin, Belfield, Dublin 4, Ireland; Annaidh A.N., School of Mechanical and Materials Engineering, University College Dublin, Belfield, Dublin 4, Ireland; Theobald P.S., Cardiff School of Engineering, Cardiff University, The Parade, Cardiff, CF24 3AA, United Kingdom","Association football, also known as soccer in some regions, is unique in encouraging its participants to intentionally use their head to gain a competitive advantage, including scoring a goal. Repetitive head impacts are now being increasingly linked to an inflated risk of developing long-term neurodegenerative disease. This study investigated the effect of heading passes from different distances, using head acceleration data and finite element modelling to estimate brain injury risk. Seven university-level participants wore a custom-fitted instrumented mouthguard to capture linear and angular acceleration-time data. They performed 10 headers within a laboratory environment, from a combination of short, medium, and long passes. Kinematic data was then used to calculate peak linear acceleration, peak angular velocity, and peak angular acceleration as well as two brain injury metrics: head injury criterion and rotational injury criterion. Six degrees of freedom acceleration-time data were also inputted into a widely accepted finite element brain model to estimate strain-response using mean peak strain and cumulative strain damage measure values. Five headers were considered to have a 25% concussion risk. Mean peak linear acceleration equalled 26 ± 7.9 g, mean peak angular velocity 7.20 ± 2.18 rad/s, mean peak angular acceleration 1730 ± 611 rad/s2, and 95th percentile mean peak strain 0.0962 ± 0.252. Some of these data were similar to brain injury metrics reported from American football, which supports the need for further investigation into soccer heading. © The Author(s) 2024.","Finite element model; Head impact sensor; Head kinematics; Strain response; Sub-concussive head impacts","Acceleration; Biomechanical Phenomena; Brain; Brain Concussion; Brain Injuries; Head; Humans; Neurodegenerative Diseases; Soccer; Acceleration; Angular velocity; Competition; Damage detection; Degrees of freedom (mechanics); Finite element method; Neurodegenerative diseases; Risk assessment; Risk perception; Sports; Brain injury; Finite element modelling (FEM); Head impact; Head impact sensor; Head kinematic; Impact sensors; Linear accelerations; Strain response; Sub-concussive head impact; acceleration; adult; Article; brain concussion; brain injury; clinical laboratory; electroencephalogram; finite element analysis; football; head injury; head movement; human; kinematics; male; peak angular acceleration; peak angular velocity; peak linear acceleration; risk factor; rotational injury; soccer; sport injury; young adult; biomechanics; brain; brain concussion; brain injury; degenerative disease; head; Kinematics","FIFA Big Count 2006. 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(56488843100); Barnes, Jeremy Thomas (7402287732)","56032152900; 56488843100; 7402287732","The effects of a four week primary and secondary speed training protocol on 40 yard sprint times in female college soccer players","2014","Journal of Human Sport and Exercise","9","3","","713","726","13","1","10.14198/jhse.2014.93.04","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84924715863&doi=10.14198%2fjhse.2014.93.04&partnerID=40&md5=7f8ec896bc858e45a9d9754b6b556f93","Southeast Missouri State University, United States; Texas State University, United States","Wagganer J.D., Southeast Missouri State University, United States; Williams R.D., Texas State University, United States; Barnes J.T., Southeast Missouri State University, United States","Improvements in running speed have been attributed to both primary and secondary speed training techniques. Primary techniques involve attention to running mechanics and form, and secondary techniques involve resisted or assisted sprinting. The purpose of this study was to assess the effect of combining both primary and secondary speed training techniques on 40 yard sprint speed in young soccer players. To compare the effects of pre- and post- four week speed training protocol on 40-yard sprint times in female collegiate soccer players. Twelve (19.5+1.5y) normal weight (BMI: 22.7+3.4 kg·m-2) and body composition (BF: 27.75+3.8%) active white female collegiate soccer players participated in a four week training protocol which implemented primary and secondary speed training methods. A standard running mechanics program was implemented two times per week and was immediately followed by resisted or assisted sprinting. Sled towing was chosen for resisted sprinting, while elastic towing devices were chosen for assisted sprinting. Forty yard sprint times were assessed pre and post protocol. Statistical analysis was conducted using SPSS. A paired samples t-test showed the four week speed training protocol elicited statistically significant reductions in 40 yard sprint times (p<0.001). The average sprint time decreased by 0.248 seconds (pre=5.463+0.066 vs post=5.215+0.053). A four week speed training protocol of primary and secondary techniques may play a significant role in reducing 40 yard sprint times in college female soccer athletes. 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Zafeiridis A., Saraslanidis P., Manou V., Dipla K., Kellis S., The effects of resisted sled-pulling sprint training on acceleration and maximum speed performance, J Sports Med Phys Fitness, 45, pp. 284-290, (2005)","","","University of Alicante","19885202","","","","English","J. Hum. Sport Exerc.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-84924715863" "Tak I.J.R.; Weir A.; Langhout R.F.H.","Tak, I.J.R. (55889523500); Weir, A. (14061518400); Langhout, R.F.H. (55311330400)","55889523500; 14061518400; 55311330400","Clinical biomechanics of the soccer instep kick in relation to groin pain: A literature review; [Klinische biomechanica van de wreeftrap in voetbal in relatie tot liespijn een literatuuroverzicht]","2012","Sport en Geneeskunde","45","1","","18","26","8","1","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863742973&partnerID=40&md5=e47f8e472877110f13d2ad9f37aab232","Fysiotherapie Utrecht Oost, Nederlands Paramedisch Instituut, Netherlands; Medisch Centrum Haaglanden, SMA Haarlem - Kennemer Gasthuis, UMC Utrecht, Netherlands; BVO NEC Nijmegen, Stichting Opleiding Muskuloskeletale, Therapie Nederlands Paramedisch Instituut, Netherlands","Tak I.J.R., Fysiotherapie Utrecht Oost, Nederlands Paramedisch Instituut, Netherlands; Weir A., Medisch Centrum Haaglanden, SMA Haarlem - Kennemer Gasthuis, UMC Utrecht, Netherlands; Langhout R.F.H., BVO NEC Nijmegen, Stichting Opleiding Muskuloskeletale, Therapie Nederlands Paramedisch Instituut, Netherlands","A sport specific movement like the soccer instep kick is a complex skill. High speed and precision are necessary. This article describes the biomechanics of the soccer instep kick. Insight into force transfer and biomechanical specifications of this task help to understand these demands. Adequate range of motion in the kinetic chain seems essential to achieve a perfect soccer kick. This range of motion is specified. With this information a relationship between range of motion and injury may be elucidated. The relationship between sport specific range of motion and injury in soccer like adductor related groin pain has not been investigated previously.","Biomechanics; Groin pain; Kick; Range of motion; Soccer","","Shan G., Westerhoff P., Full-body Kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sport Biomech, 4, pp. 59-72, (2005); Lees A., Asai T., Andersen T., Nunome H., The biomechanics of kicking in soccer: A review, J Sport Sci, 28, pp. 805-817, (2010); Charnock B., Lewis C., Garrett J., William E., Queen R., Adductor longus mechanics during the maximal effort soccer kick, Sport Biomech, 8, pp. 223-234, (2009); Naito K., Fukui Y., Maruyama T., Multijoint kinetic chain analysis of knee extension during the soccer instep kick, Hum Mov Sci, 29, pp. 259-276, (2010); Egan C.D., Verheul M.H.G., Savelsbergh G.J.P., Effects of experience on the coordination of internally and externally timed soccer kicks, Journal of Motor Behavior, 39, 5, pp. 423-432, (2007); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, 12, pp. 2028-2036, (2002); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, Journal of Sports Sciences, 24, 1, pp. 11-22, (2006); Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, Journal of Sports Sciences, 24, 9, pp. 951-960, (2006); Zheng N., Barrentine S.W., Fleisig C.S., Andrews J.R., Kinematic analysis of swing in pro and amateur golfers, International Journal of Sports Medicine, 29, 6, pp. 487-493, (2008); Carling C., Bloomfield J., Nelsen L., Reilly T., The role of motion analysis in elite soccer: Contemporary performance measurement techniques and work rate data, Sports Med, 38, pp. 839-862, (2008); Robb A., Fleisig G., Wilk K., Macrina L., Bolt B., Pajaczkowski J., Passive ranges of motion of the hips and their relationship with pitching biomechanics and ball velocity in professional baseball pitchers, Am J Sports Med, 38, pp. 2487-2493, (2010); 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Tak; Fysiotherapie Utrecht Oost, Nederlands Paramedisch Instituut, Netherlands; email: igor.tak@gmail.com","","","18746659","","","","Dutch","Sport Geneeskd.","Article","Final","","Scopus","2-s2.0-84863742973" "Sasaki S.; Koga H.; Krosshaug T.; Sakurai T.; Fukubayashi T.","Sasaki, S. (37015495700); Koga, H. (12763750800); Krosshaug, T. (55888189500); Sakurai, T. (37015791000); Fukubayashi, T. (7003671492)","37015495700; 12763750800; 55888189500; 37015791000; 7003671492","A biomechanical approach to evaluating field sports performance using a model-based image-matching technique: A case report of 4 defensive football game situations","2013","Gazzetta Medica Italiana Archivio per le Scienze Mediche","172","10","","799","805","6","2","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84890248006&partnerID=40&md5=e5e04dcfd7ba877f9c1121eb9ba8e709","Department of Judotherapy, Faculty of Health Sciences, Tokyo Ariake University of Medical and Health Sciences, Koto-ku, 135-0063, Tokyo, 2-9-1 Ariake, Japan; Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University, Tokyo, Japan; Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Faculty of Sport Sciences, Waseda University, Saitama, Japan","Sasaki S., Department of Judotherapy, Faculty of Health Sciences, Tokyo Ariake University of Medical and Health Sciences, Koto-ku, 135-0063, Tokyo, 2-9-1 Ariake, Japan; Koga H., Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University, Tokyo, Japan; Krosshaug T., Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway; Sakurai T., Department of Judotherapy, Faculty of Health Sciences, Tokyo Ariake University of Medical and Health Sciences, Koto-ku, 135-0063, Tokyo, 2-9-1 Ariake, Japan; Fukubayashi T., Faculty of Sport Sciences, Waseda University, Saitama, Japan","Defensive actions are considered to be of major importance for success in football games, yet the biomechanical aspects of defensive actions remain unknown. Providing information on movements from real game situations is crucial, as players can learn how to improve their performance. The main purpose of this case study was to evaluate the feasibility of a Model-based Image-matching (MBIM) technique to quantitatively analyse one-on-one defensive movement in real football game situations. Two of the 4 defenders studied performed side-step manoeuvres (side-1, -2) whereas the other 2 used cross-over-step manoeuvres (crossover-1, -2). Side-1 and crossover-1 were considered successful because the players were able to stop the attacker during the dribble. On the other hand, the side-2 and crossover-2 cases were considered unsuccessful because the players were not able to stop the dribble attack. Model-matching was successful in all situations and revealed that compared with the unsuccessful defenders, the 2 successful defenders performed cutting manoeuvres with shorter ground contact time, smaller centre of mass displacement, and lesser knee and hip flexion. It therefore seems feasible to use this technique in further studies with a larger number of players to study defensive performance in football. Moreover, we propose that the MBIM method and lab studies on field sports assessment should be combined to produce much better results as compared with the visual inspection approach.","Athletic performance; Biomechanics; Soccer","article; athletic performance; biomechanics; controlled study; football; hip; human; image analysis; kinematics; knee function; model based image matching technique; movement (physiology); sport; trunk; videorecording","FIFA: South Africa 2010 in Numbers [Internet]; Carling C., Reilly T., Williams A.M., Performance Assessment for Field Sports, (2009); Barros R.M.L., Misuta M.S., Menezes R.P., Figueroa P.J., Moura F.A., Cunha S.A., Et al., Analysis of the distance covered by first division Brazilian soccer players obtained with an automatic tracking method, J Sports Sci Med, 6, pp. 233-242, (2007); Pereira S.N., Kirkendall D.T., Leite D.N.T., Movement patterns in elite Brazilian youth soccer, J Sports Med Phys Fitness, 47, pp. 270-275, (2007); Bangsbo J., Fitness Training in Football -A Scientific Approach, (1994); Reilly T., Motion analysis and physiological demands, Science and Soccer, pp. 59-72, (2003); Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in FA Premier League soccer, J Sports Sci Med, 6, pp. 63-70, (2007); Krosshaug T., Nakamae A., Boden B., Engebretsen L., Smith G., Slauterbeck J., Hewett T.E., Bahr R., Estimating 3D joint kinematics from video sequences of running and cutting maneuvers-assessing the accuracy of simple visual inspection, Gait and Posture, 26, 3, pp. 378-385, (2007); Franks I.M., The need for feedback, National Analysis of Sport:System for Better Coaching and Performance, pp. 17-40, (2004); Krosshaug T., Bahr R., A model-based image-matching technique for three-dimensional reconstruction of human motion from uncalibrated video sequences, Journal of Biomechanics, 38, 4, pp. 919-929, (2005); Koga H., Nakamae A., Shima Y., Iwase J., Myklebust G., Engebretsen L., Et al., Mechanisms of noncontact anterior cruciate ligament injuries: Knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, pp. 2218-2225, (2010); Koga H., Bahr R., Myklebust G., Engebretsen L., Grund T., Krosshaug T., Estimating anterior tibial translation from model-based image-matching of a noncontact anterior cruciate ligament injury in professional football:A case report, Clin J Sport Med, 21, pp. 271-274, (2011); Krosshaug T., Slauterbeck J.R., Engebretsen L., Bahr R., Biomechanical analysis of anterior cruciate ligament injury mechanisms: Three-dimensional motion reconstruction from video sequences, Scand J Med Sci Sports, 17, pp. 508-519, (2007); Fong D.T., Hong Y., Shima Y., Krosshaug T., Yung P.S., Chan K.M., Biomechanics of supination ankle sprain:A case report of an accidental injury event in the laboratory, Am J Sports Med, 37, pp. 822-827, (2009); Mok K.M., Fong D.T., Krosshaug T., Hung A.S., Yung P.S., Chan K.M., An ankle joint model-based image-matching motion analysis technique, Gait Posture, 34, pp. 71-75, (2011); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, Journal of Biomechanical Engineering, 105, 2, pp. 136-144, (1983); Woltring H.G., A fortran package for generalized, cross-validatory spline smoothing and differentiation, Adv Eng Software, 8, pp. 104-113, (1986); Green B.S., Blake C., Caulfield B.M., A comparison of cutting technique performance in rugby union players, J Strength Cond Res, 25, pp. 2668-2680, (2011); Sasaki S., Nagano Y., Kaneko S., Sakurai T., Fukubayashi T., The relationship between performance and trunk movement during change of direction, J Sports Sci Med, 10, pp. 112-118, (2011); Young W.B., James R., Montgomery I., Is muscle power related to running speed with change of direction?, J Sports Med Phys Fitness, 42, pp. 282-288, (2002); Saunders J.B., Inman V.T., Eberhart H.D., The major determinants in normal and pathological gait, J Bone Joint Surg, 35, pp. 543-558, (1953); Tsuchie H., Development of running techniques making approach of Olympic game in Athens, Sport Sci Res, 1, pp. 10-17, (2004); Bradshaw R.J., Young W.B., Russell A., Burge P., Comparison of offensive agility technique in Australian Rules football, J Sci Med Sport, 14, pp. 65-69, (2011); Sheppard J.M., Young W.B., Agility literature review: Classifications, training and testing, J Sports Sci, 24, pp. 919-932, (2006); Moreno E., Developing quickness, part 2, Strength Cond, 17, pp. 38-39, (1995)","S. Sasaki; Department of Judotherapy, Faculty of Health Sciences, Tokyo Ariake University of Medical and Health Sciences, Koto-ku, 135-0063, Tokyo, 2-9-1 Ariake, Japan; email: sasaki@tau.ac.jp","","","03933660","","GMIME","","English","Gazz. Med. Ital. Arch. Sci. Med.","Article","Final","","Scopus","2-s2.0-84890248006" "Knudsen N.S.; Andersen T.B.","Knudsen, Nikolas Sten (57104865000); Andersen, Thomas Bull (7201524099)","57104865000; 7201524099","Morphology of possible regions in elite soccer players","2023","Sports Biomechanics","22","10","","1334","1347","13","1","10.1080/14763141.2020.1797862","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091090667&doi=10.1080%2f14763141.2020.1797862&partnerID=40&md5=0c34a1dba88b096dcef3810542e9328b","Department of Public Health - Sport Science, Aarhus University, Aarhus, Denmark","Knudsen N.S., Department of Public Health - Sport Science, Aarhus University, Aarhus, Denmark; Andersen T.B., Department of Public Health - Sport Science, Aarhus University, Aarhus, Denmark","The popularity of spatio-temporal analyses in soccer is increasing. As many of these analyses depend on the regions a player can occupy in a certain amount of time (the possible regions), the understanding of this concepts is important for analyses to produce usable results. This study investigated how possible regions of soccer morph with varying times and running speeds. Twenty-four players from the Danish Superliga participated, and 13 players were analysed. The possible regions were analysed with times from 0.5 to 4 s (0.5 s increments) and initial velocities from 1 to 7 m/s (1 m/s increments). In this study, we showed that the possible regions can be described by ellipses (eccentricity of 0.5348 ± 0.1912). When comparing the possible region ellipses at every time and velocity pair, 1.95 % of the ellipses were not significantly different from the others. In conclusion, possible regions are unique in shape and size depending on player running speed and time available. However, as only few strikers participated, the results for this group should be interpreted with caution. Coaches can predict possible regions based on these parameters increasing precision of post-game analyses. © 2020 Informa UK Limited, trading as Taylor & Francis Group.","athlete profiling; possible regions; soccer; Spatio-temporal analysis","Athletic Performance; Biomechanical Phenomena; Humans; Running; Soccer; Spatio-Temporal Analysis; article; human; protein fingerprinting; running; soccer player; spatiotemporal analysis; velocity; athletic performance; biomechanics; running; soccer; spatiotemporal analysis","Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in FA Premier League soccer, Journal of Sports Science & Medicine, 6, pp. 63-70, (2007); Bradley P., Sheldon W., Wooster B., Olsen P., Boanas P., Krustrup P., High-intensity running in the English FA Premier League soccer matches, Journal of Sports Sciences, 27, pp. 159-168, (2009); Bueno M., Caetano F., Yonezawa M., Grella A., Cunha S., Moura A., How do futsal players of different categories play during official matches? A tactical approach to players’ organization on the court from positional data, PLoS ONE, 13, (2018); Chaouachi A., Manzi V., Chaalali A., Wong D., Chamari K., Castagna C., Determinants analysis of chance-of-direction ability in elite soccer players, Journal of Strength and Conditioning Research, 26, pp. 2667-2676, (2012); Ferro A., Villacieros J., Floria P., Graupera J., Analysis of speed performance in soccer by playing position and a sports level using a laser system, Journal of Human Kinetics, 44, pp. 143-153, (2014); Fonseca S., Milho J., Travassos B., Araujo D., Lopes A., Measuring spatial interaction behaviour in team sports using superimposed Voronoi diagrams, International Journal of Performance Analysis in Sport, 13, pp. 179-189, (2013); Fujimura A., Sugihara K., Geometric analysis and quantitative evaluation of sport teamwork, Systems and Computers in Japan, 36, pp. 49-58, (2005); Grehaigne J., Bouthier D., David B., A method to analyse attacking moves in soccer, Science and football iii, pp. 258-264, (1997); Gudmundsson J., Wolle T., Football analysis using spatio-temporal tools, Computers, Environment and Urban Systems, 47, pp. 16-27, (2014); Gudmundsson J., Horton M., Spatio-temporal analysis of team sports, ACM Computing Surveys, (2017); Hader K., Palazzi D., Buchheit M., Change of direction speed in soccer: How much braking is enough?, Kinesiology, 47, pp. 67-74, (2015); Kang C., Hwang J., Li K., Trajectory analysis for soccer players, Sixth Institute of Electrical and Electronics Engineers International Conference on Data Mining - Workshops, (2006); Knudsen N., Andersen T., Methodology to detect gaps in a soccer defence, International Journal of Computer Science in Sport, 14, pp. 18-24, (2015); Knudsen N., Andersen T., Detection of spatiotemporal asymmetry in pro level soccer players, Journal of Strength and Conditioning Research, 32, pp. 798-804, (2018); Linke D., Link D., Lames M., Football-specific validity of TRACAB’s optical video tracking systems, Plos One, 15, (2020); Maheswaran R., Chang Y., Su J., Kwok S., Leby T., Wexler A., Hollingsworth N., The three dimensions of rebounding, 8th annual MIT SLOAN Sports Analytics Conference, (2014); Mitchell S., Improving invasion game performance, Journal of Physical Education, Recreation and Dance, 67, pp. 30-33, (1996); Taki T., Hasegawa J., Fukumura T., Development of motion analysis system for quantitative evaluation of teamwork in soccer games, Proceedings of 3rd Institute of Electrical and Electronics Engineers International Conference on Image Processing, pp. 815-818, (1996); Taki T., Hasegawa J., Visualization of dominant region in team games and its application to teamwork analysis, Proceedings Computer Graphics International, (2000); Taskin H., Evaluating sprinting ability, density of acceleration, and speed dribbling ability of professional soccer players with respect to their positions, Journal of Strength and Conditioning Research, 22, pp. 1481-1486, (2008)","T.B. Andersen; Department of Public Health - Sport Science, Aarhus University, Aarhus, Denmark; email: tbull@ph.au.dk","","Routledge","14763141","","","32935633","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-85091090667" "Ramang D.S.","Ramang, Didi Saputra (57195942455)","57195942455","The landing error scoring system as a tool for assessing anterior cruciate ligament injury","2017","Advanced Science Letters","23","7","","6694","6696","2","1","10.1166/asl.2017.9374","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85030246502&doi=10.1166%2fasl.2017.9374&partnerID=40&md5=e9ffc9eac2e3587892f2f6151e1ef30e","Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia","Ramang D.S., Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia","Introduction: One of the most common knee injury is anterior cruciate ligament (ACL) sprain or tear. Athletes who participate in high demand sports like soccer, football, and basketball are more likely to injure their anterior cruciate ligaments. Identifying risk factors for ACL injury is a critical step and effective in ACL injury-prevention programs. The Landing Error Scoring System (LESS) is a valid and reliable clinical assessment to identify athletes at increased risk of suffering non-contact ACL injury through evaluation of jump-landing biomechanics. Method: A literature search was conducted through Pubmed and Cochrane databases using various keywords, such as ‘ACL injury,’ ‘score,’ and ‘assessment.’ A number of articles were then selected by title/abstract. After screening the titles/abstracts and full-text reading, one full-text article was obtained. The article was a cohort study and applied in field-based functional movement screening performed at soccer practice facilities. For the selected article, the three critical appraisal were performed by using the criteria of the Oxford Centre for Evidence-Based Medicine, which include assessing validity, importance, and applicability. Result: The article (Padua, et al.) conclude that the LESS as a tool for assessment ACL injury has high a sensitivity of 86% and a specificity of 68%. Conclusion: The LESS can be used as a tool for assessment ACL injury especially for athletes. © 2017 American Scientific Publishers All rights reserved.","Anterior cruciate ligament; Assessment; Athlete; Biomechanics; Injury risk","","Salter A., Et al., Textbook of Disorders and Injuries of the Musculoskeletal Systems; Hurley R., Et al., Manual of Orthopaedics; Reksoprodjo S., Kumpulan Kuliah Ilmu Bedah, pp. 501-530, (2010); Sjamsuhidajat R., De Jong W., Buku Ajar Ilmu Bedah, pp. 910-923, (2004); Olsen O.E., Myklebust G., Engebretsen L., Bahr R., Am. J. Sports Med, 32, (2004); Padua D.A., Marshall S.W., Boling M.C., Thigpen C.A., Garrett W.E., Beutler A.I., Am. J. Sports Med, 37, (2009); Distefano L.J., Padua D.A., Distefano M.J., Marshall S.W., Med. Sci. Sports Exerc, 41, 5, (2009)","","","American Scientific Publishers","19366612","","","","English","Adv. Sci. Lett.","Article","Final","","Scopus","2-s2.0-85030246502" "Álvarez-Zafra M.; Yanci J.; García-Tabar I.; Bikandi E.; Etxaleku S.; Izquierdo M.; Krosshaug T.; Fernandez-Lasa U.; Setuain I.","Álvarez-Zafra, Marta (57290367300); Yanci, Javier (55755789700); García-Tabar, Ibai (55878454900); Bikandi, Eder (57198890695); Etxaleku, Saioa (57218647846); Izquierdo, Mikel (7103111881); Krosshaug, Tron (55888189500); Fernandez-Lasa, Uxue (56586182700); Setuain, Igor (44061926500)","57290367300; 55755789700; 55878454900; 57198890695; 57218647846; 7103111881; 55888189500; 56586182700; 44061926500","Functional and anthropometrical screening test among high performance female football players: A descriptive study with injury incidence analysis, the basque female football cohort (bffc) study","2021","International Journal of Environmental Research and Public Health","18","20","10658","","","","1","10.3390/ijerph182010658","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116810083&doi=10.3390%2fijerph182010658&partnerID=40&md5=1d69c744b19617ebf2fec9ffd7ff7f1f","Faculty of Education and Sport, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, 01007, Spain; Society, Sports and Physical Exercise Research Group (GIKAFIT), Department of Physical Education and Sport, Faculty of Education and Sport, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, 01007, Spain; Navarrabiomed, Complejo Hospitalario de Navarra (CHN)-Public, University of Navarra (UPNA), Navarra Institute for Health Research (IdiSNA), Pamplona, 31006, Spain; Clinical Research Department, TDN, Advanced Rehabilitation Center, Pamplona, 31006, Spain; Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, 0806, Norway","Álvarez-Zafra M., Faculty of Education and Sport, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, 01007, Spain; Yanci J., Society, Sports and Physical Exercise Research Group (GIKAFIT), Department of Physical Education and Sport, Faculty of Education and Sport, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, 01007, Spain; García-Tabar I., Society, Sports and Physical Exercise Research Group (GIKAFIT), Department of Physical Education and Sport, Faculty of Education and Sport, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, 01007, Spain; Bikandi E., Navarrabiomed, Complejo Hospitalario de Navarra (CHN)-Public, University of Navarra (UPNA), Navarra Institute for Health Research (IdiSNA), Pamplona, 31006, Spain; Etxaleku S., Clinical Research Department, TDN, Advanced Rehabilitation Center, Pamplona, 31006, Spain; Izquierdo M., Navarrabiomed, Complejo Hospitalario de Navarra (CHN)-Public, University of Navarra (UPNA), Navarra Institute for Health Research (IdiSNA), Pamplona, 31006, Spain; Krosshaug T., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, 0806, Norway; Fernandez-Lasa U., Society, Sports and Physical Exercise Research Group (GIKAFIT), Department of Physical Education and Sport, Faculty of Education and Sport, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, 01007, Spain; Setuain I., Navarrabiomed, Complejo Hospitalario de Navarra (CHN)-Public, University of Navarra (UPNA), Navarra Institute for Health Research (IdiSNA), Pamplona, 31006, Spain, Clinical Research Department, TDN, Advanced Rehabilitation Center, Pamplona, 31006, Spain","The main objectives of the present study were to describe the injury incidence and to analyze the anthropometric and physical characteristics of players from three high-level women’s football teams. The present study involved 54 female football players (21.9 ± 4.9 years old) from three different teams competing in the Spanish Reto Iberdrola-Segunda División PRO league. A battery of tests was carried out to determine the anthropometric and physical performance characteristics of the players along with an injury incidence record during a full competitive season. The obtained results showed that there was a high incidence of injury, as 38% of the players suffered some type of injury during the season (range 1–5; 1.75 ± 1.02 injuries per player). Injuries occurred in both matches and during training at a similar percentage (48.6 vs. 51.4%), and the majority of the registered episodes were graded as moderate or severe injury types (60%). Players suffering from an injury accumulated a total of 1587 chronological days off work due to injury during the season, with a recurrence rate of 55%. Considering the high incidence of injury, and the injury burden and the reinjure rate observed in this research, it seems necessary to apply the most efficient prevention and recovery measures possible in these female football teams. These descriptive data could serve athletic trainers and medical staff of female football teams to better understand their own screening procedure-derived data. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.","Elite; Injury; Performance; Soccer; Team sports; Women","Adolescent; Adult; Athletic Injuries; Female; Football; Humans; Incidence; Soccer; Spain; Young Adult; Spain; injury; performance assessment; sport; training; womens status; adolescent; adult; anthropometry; Article; biomechanics; cohort analysis; disease severity; disease surveillance; dynamometry; female; football; football player; function test; human; lower limb; morbidity; physical performance; range of motion; recurrence risk; football; incidence; soccer; Spain; sport injury; young adult","Alahmad T.A., Kearney P., Cahalan R., Injury in elite women’s soccer: A systematic review, Phys. Sportsmed, 48, pp. 259-265, (2020); Mercieca F., Cumbo R.K., Seychell D., An Overview of Injuries in Senior Women’s Football in Malta, MCAST J. Appl. Res. 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Fit, 61, pp. 218-232, (2021); Nilstad A., Andersen T.E., Bahr R., Holme I., Steffen K., Risk factors for lower extremity injuries in elite female soccer players, Am. J. Sports Med, 42, pp. 940-948, (2014); Ostenberg A., Roos H., Injury risk factors in female European football. A prospective study of 123 players during one season, Scand. J. Med. Sci. Sports, 10, pp. 279-285, (2000); Soderman K., Alfredson H., Pietila T., Werner S., Risk factors for leg injuries in female soccer players: A prospective investigation during one out-door season, Knee Surg. Sports Traumatol. Arthrosc, 9, pp. 313-321, (2001); Nilstad A., Krosshaug T., Mok K.M., Bahr R., Andersen T.E., Association between anatomical characteristics, knee laxity, muscle strength, and peak knee valgus during vertical drop-jump landings, J. Orthop. Sports Phys. Ther, 45, pp. 998-1005, (2015); Ekstrand J., Epidemiology of football injuries, Sci. Sports, 23, pp. 73-77, (2008); Pedersen A.V., Aksdal I.M., Stalsberg R., Scaling demands of soccer according to anthropometric and physiological sex differences: A fairer comparison of men’s and women’s soccer, Front. Psychol, 10, (2019); Kammoun M.M., Trabelsi O., Gharbi A., Masmoudi L., Ghorbel S., Tabka Z., Chamari K., Anthropometric and physical fitness profiles of tunisian female soccer players: Associations with field position, Acta Gymnica, 50, pp. 130-137, (2020); Steffen K., Nilstad A., Krosshaug T., Pasanen K., Killingmo A., Bahr R., No association between static and dynamic postural control and ACL injury risk among female elite handball and football players: A prospective study of 838 players, Br. J. Sports Med, 51, pp. 253-259, (2017); Villaseca-Vicuna R., Molina-Sotomayor E., Zabaloy S., Gonzalez-Jurado J.A., Anthropometric profile and physical fitness performance comparison by game position in the Chile women’s senior national football team, Appl. 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Public Health, 18, (2021); Farley J.B., Keogh J.W.L., Woods C.T., Milne N., Physical fitness profiles of female Australian football players across five competition levels, Sci. Med. Football, (2021); Mentiplay B.F., Mosler A.B., Crossley K.M., Carey D.L., Sakadjian K., Bodger R., Shipperd B., Bruder A.M., Lower limb musculoskeletal screening in elite female Australian football players, Phys. Ther. Sport, 40, pp. 33-43, (2019); Paul D.J., Nassis G.P., Whiteley R., Marques J.B., Kenneally D., Chalabi H., Actue responses of soccer match play on hip stregth and flexibility measures: Potential measure of injury risk, J. Sports Sci, 32, pp. 1318-1323, (2014); Andrade M.D.S., Mascarin N.C., Foster R., di Bella Z.I.d., Vancini R.L., de Lira C.A.B., Is muscular strength balance influenced by menstrual cycle in female soccer players?, J. Sports Med. Phys. 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Sports Sci, 27, pp. 107-114, (2009); Mok K.M., Petushek E., Krosshaug T., Reliability of knee biomechanics during a vertical drop jump in elite female athletes, Gait Posture, 46, pp. 173-178, (2016); Arcos A.L., Yanci J., Mendiguchia J., Salinero J.J., Brughelli M., Castagna C., Short-term training effects of vertically and horizontally oriented exercises on neuromuscular performance in professional soccer players, Int. J. Sports Physiol. Perform, 9, pp. 480-488, (2014); Read P.J., McAuliffe S., Bishop C., Oliver J.L., Graham-Smith P., Farooq M.A., Asymmetry thresholds for common screening tests and their effects on jump performance in professional soccer players, J. Athl. Train, 56, pp. 46-53, (2021); Bishop C., Read P., McCubbine J., Turner A., Vertical and Horizontal Asymmetries Are Related to Slower Sprinting and Jump Performance in Elite Youth Female Soccer Players, J. Strength Cond. Res, 35, pp. 56-63, (2021); Sprouse B., Alty J., Kemp S., Cowie C., Mehta R., Tang A., Morris J., Cooper S., Varley I., The Football Association Injury and Illness Surveillance Study: The Incidence, Burden and Severity of Injuries and Illness in Men’s and Women’s International Football, Sports Med, pp. 1-20, (2020); Finch C.F., Twomey D.M., Fortington L.V., Doyle T.L.A., Elliott B.C., Akram M., Lloyd D.G., Preventing australian football injuries with a targeted neuromuscular control exercise programme: Comparative injury rates from a training intervention delivered in a clustered randomised controlled trial, Inj. Prev, 22, pp. 123-128, (2016); Milanovic Z., Sporis G., James N., Trajkovic N., Ignjatovic A., Sarmento H., Trecroci A., Mendes B.M.B., Physiological Demands, Morphological Characteristics, Physical Abilities and Injuries of Female Soccer Players, J. Hum. Kinet, 60, pp. 77-83, (2017); Mayhew L., Johnson M.I., Francis P., Lutter C., Alali A., Jones G., Incidence of injury in adult elite women’s football: A systematic review and meta-analysis, BMJ Open Sport Exerc. Med, 13, (2021)","J. Yanci; Society, Sports and Physical Exercise Research Group (GIKAFIT), Department of Physical Education and Sport, Faculty of Education and Sport, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, 01007, Spain; email: javier.yanci@ehu.eus","","MDPI","16617827","","","34682404","English","Int. J. Environ. Res. Public Health","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85116810083" "Sujae I.H.; Abdul Jabbar K.; Ong C.Y.; Hamill J.","Sujae, Ian Harris (57215717118); Abdul Jabbar, Khalid (59019517700); Ong, Chin Yong (57215715215); Hamill, Joseph (19734120100)","57215717118; 59019517700; 57215715215; 19734120100","Differences in joint loading during a side-step cutting manoeuvre on different artificial turf infill depths","2022","Sports Biomechanics","21","9","","981","992","11","1","10.1080/14763141.2020.1713206","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85081740777&doi=10.1080%2f14763141.2020.1713206&partnerID=40&md5=82972644e606dae838388e2f995da751","School of Health Sports Leisure, Republic Polytechnic, Singapore, Singapore; Geriatric Education and Research Institute, Khoo Teck Puat Hospital, Singapore, Singapore; Department of Kinesiology, University of Massachusetts Amherst, Amherst, MA, United States","Sujae I.H., School of Health Sports Leisure, Republic Polytechnic, Singapore, Singapore; Abdul Jabbar K., Geriatric Education and Research Institute, Khoo Teck Puat Hospital, Singapore, Singapore; Ong C.Y., School of Health Sports Leisure, Republic Polytechnic, Singapore, Singapore; Hamill J., School of Health Sports Leisure, Republic Polytechnic, Singapore, Singapore, Department of Kinesiology, University of Massachusetts Amherst, Amherst, MA, United States","This study investigated differences in joint loading during a side-step manoeuvre on artificial grass turfs with different infill depths. The kinematics and kinetics of 17 trained male inter-college soccer players performing the manoeuvre were captured using 10 high-speed optical cameras synchronised to a force-platform at sampling frequencies of 250 Hz and 1000 Hz respectively. Significantly larger lateral forces (GRFxpeak) (p = 0.036), larger anterior/posterior forces (GRFypeak) (p = 0.062) and larger vertical forces (GRFzpeak) (p = 0.390) suggests that turf with greater infill depths may be firmer. This could elicit greater stresses on the lower extremity, thereby increasing the risk of knee ligament injuries. Significant differences were reported only for ankle inversion angle (p = 0.001; ES = 0.74), inversion/eversion ankle moment (p = 0.039; ES = 0.52) and abduction-adduction ankle moment (p = 0.022; ES = 0.79) at GRFzpeak. Lower extremity adaptations to execute the manoeuvre on turf with greater infill depths may have taken place at the ankle rather than the knee. While this change in technique may implicate injuries, greater infill depths can be counter-intuitive where a certain level of hardness in the artificial turf might be necessary which otherwise could affect the athletes’ performance and potentially reduce injury risk. © 2020 Informa UK Limited, trading as Taylor & Francis Group.","artificial grass turf; biomechanics; infill; locomotion; Side-step","","External loading of the knee joint during running and cutting maneuvers, Medicine in Science in Sports and Exercise, 33, pp. 1168-1175, (2001); Blackmore T., Willy R.W., Creaby M.W., The high frequency component of the vertical ground reaction force is a valid surrogate measure of the impact peak, Journal of Biomechanics, 49, pp. 479-483, (2016); Boden B.P., Torg J.S., Knowles S.B., Hewett T.E., Video analysis of anterior cruciate ligament injury: Abnormalities in hip and ankle kinematics, American Journal of Sports Medicine, 37, pp. 232-259, (2009); Brosnan J.T., McNitt A.S., Surface conditions of highly maintained baseball fields in the northeastern United States–Part 1–Non-turfed basepaths, Applied Turfgrass Science, (2008); Brosnan J.T., McNitt A.S., Surface conditions of highly maintained baseball fields in the northeastern United States–Part 2–Synthetic versus natural turf grass, Applied Turfgrass Science, (2008); Brosnan J.T., McNitt A.S., Serensits T.J., Effects of varying surface characteristics on the hardness and traction of baseball field playing surfaces, International Turfgrass Society Research Journal, 11, (2009); Caplan N., Kader D.F., Stiffness and laxity of the knee: The contributions of the supporting structures: A quantitative in vitro study, Classic papers in orthopedics, (2014); Chow J.Y., Davids K., Button C., Koh M., Organization of motor system degrees of freedom during the soccer chip: An analysis of skilled performance. Organization of motor system degrees of freedom during the soccer chip: An analysis of skilled performance, International Journal of Sport Psychology, 37, pp. 207-229, (2006); Cohen J., Statistical power analysis for the behavioral sciences, (1988); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Changing sidestep cutting technique reduces knee valgus loading, The American Journal of Sports Medicine, 37, pp. 2194-2200, (2009); Ficanha E.M., Rastgaar M., Kenton R., Kaufman K.R., Ankle mechanics during sidestep cutting implicates need for 2-degrees of freedom powered ankle-foot prostheses, Journal of Rehabilitation Research and Development, 52, pp. 97-112, (2015); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, Journal of Biomechanical Engineering, 105, pp. 136-144, (1983); Houck J.R., Duncan A., De Haven K.E., Comparison of frontal plane trunk kinematics and hip and knee moments during anticipated and unanticipated walking and side step cutting tasks, Gait & Posture, 24, pp. 314-322, (2006); Hughes G., Watkins J., A risk-factor model for anterior cruciate ligament injury, Sports Medicine, 36, pp. 411-428, (2006); Inaba Y., Yoshioka S., Iida Y., Hay D.C., Fukashiro S., A biomechanical study of side steps at different distances, Journal of Applied Biomechanics, 29, pp. 336-345, (2013); Kirstianslud E., Krosshaug T., Mok K.M., McLean S., van den Bogert A.J., Expressing the joint moments of drop jumps and sidestep cutting in different reference frames–Does it matter?, Journal of Biomechanics, 47, pp. 193-199, (2013); Koga H., Makamae A., Shima Y., Iwasa J., Myklebust G., Engebresten L., Krosshaug T., Mechanisms for noncontact anterior cruciate ligament injuries: Knee joint kinematics in 10 injury situations from female team handball and basketball, American Journal of Sports Medicine, 38, pp. 2218-2225, (2010); McLean S.G., Huang X., van den Bogert A.J., Association between lower extremity posture at contact and peak knee valgus moment during sidestepping: Implications for ACL injury, Clinical Biomechanics, 20, pp. 863-870, (2005); McLean S.G., Su A., van den Bogert A.J., Development and validation of a 3D model to predict knee joint loading during dynamic movement, Journal of Biomechanical Engineering, 31, pp. 864-874, (2003); McLeod A., (2008); McNitt A.S., Synthetic turf in the USA–Trends and issues, International Turfgrass Society Research Journal, 10, pp. 27-33, (2005); Orchard L., Is there a relationship between ground and climatic conditions and injuries in football?, Sports Medicine, 32, pp. 419-432, (2002); Patla A.E., Prentice S.D., Robinson C., Visual control of locomotion: Strategies for changing direction and for going over obstacles, Journal of Experimental and Psychology: Human Perception and Performance, 173, pp. 603-634, (1991); Podraza J.F., White S.C., Effect of knee flexion angle on ground reaction forces, knee moments and muscle co-contraction during an impact-like deceleration landing: Implications for the non-contact mechanism of ACL injury, The Knee, 17, 4, (2010); Pollard C.D., Davis I.M., Hamill J., Influence of gender on hip and knee mechanics during a randomly cued cutting maneuver, Clinical Biomechanics, 19, pp. 1022-1031, (2004); Robertson G., Caldwell G., Hamill J., Kamen G., Whittlesey S., Research methods in biomechanics, (2014); Simon R., Review of the impacts of crumb rubber in artificial turf applications, (2010); Taylor S.A., Fabricant P.D., Khair M.M., Haleem A.M., Drakos M.C., A review of synthetic playing surfaces, the shoe-surface interface, and lower extremity injuries in athletes, The Physician and Sportsmedicine, 40, pp. 66-72, (2012); Williams S., Hume P.A., Kara S., A review of football injuries on third and fourth generation artificial turfs compared with natural turf, Sports Medicine, 41, pp. 903-923, (2011); Woo S.L., Hollis J.M., Adams D.J., Lyon R.M., Takai S., Tensile properties of the human femur-anterior cruciate ligament-tibia complex. The effects of specimen age and orientation, The American Journal of Sports Medicine, 19, pp. 217-225, (1991)","I.H. Sujae; School of Health Sports Leisure, Republic Polytechnic, Singapore, Singapore; email: ian_harris_sujae@rp.edu.sg","","Routledge","14763141","","","32160819","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-85081740777" "Coyne L.M.; Newell M.; Hoozemans M.J.M.; Morrison A.; Brown S.J.","Coyne, Lara M. (59011388400); Newell, Micheál (23498793000); Hoozemans, Marco J.M. (6603575989); Morrison, Andrew (56246883400); Brown, Susan J. (55712912700)","59011388400; 23498793000; 6603575989; 56246883400; 55712912700","Marker location and knee joint constraint affect the reporting of overhead squat kinematics in elite youth football players","2024","Sports Biomechanics","23","6","","740","757","17","0","10.1080/14763141.2021.1890197","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85191930518&doi=10.1080%2f14763141.2021.1890197&partnerID=40&md5=d1ad989b32c2f595782cb10af0762809","School of Medicine, National University of Ireland, Galway, Ireland; Arsenal Performance & Research Team, Arsenal Football Club, London, United Kingdom; Insight, Centre for Data Analytics, National University of Ireland, Galway, Ireland; Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Amsterdam Movement Sciences, Vrije University Amsterdam, Amsterdam, Netherlands; Cambridge Centre for Sports and Exercise Sciences, Anglia Ruskin University, Cambridge, United Kingdom; School of Applied Sciences Edinburgh, Edinburgh Napier University, Scotland, United Kingdom","Coyne L.M., School of Medicine, National University of Ireland, Galway, Ireland, Arsenal Performance & Research Team, Arsenal Football Club, London, United Kingdom, Insight, Centre for Data Analytics, National University of Ireland, Galway, Ireland; Newell M., School of Medicine, National University of Ireland, Galway, Ireland; Hoozemans M.J.M., Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Amsterdam Movement Sciences, Vrije University Amsterdam, Amsterdam, Netherlands; Morrison A., Cambridge Centre for Sports and Exercise Sciences, Anglia Ruskin University, Cambridge, United Kingdom; Brown S.J., School of Applied Sciences Edinburgh, Edinburgh Napier University, Scotland, United Kingdom","Motion capture systems are used in the analysis and interpretation of athlete movement patterns for a variety of reasons, but data integrity remains critical regardless. The extent to which marker location or constraining degrees of freedom (DOF) in the biomechanical model impacts on this integrity lacks consensus. Ten elite academy footballers performed bilateral overhead squats using a marker-based motion capture system. Kinematic data were calculated using four different marker sets with 3DOF and 6DOF configurations for the three joint rotations of the right knee. Root mean squared error differences between marker sets ranged in the sagittal plane between 1.02 and 4.19 degrees to larger values in the frontal (1.30–6.39 degrees) and transverse planes (1.33 and 7.97 degrees). The cross-correlation function of the knee kinematic time series for all eight marker-sets ranged from excellent for sagittal plane motion (>0.99) but reduced for both coronal and transverse planes (<0.9). Two-way ANOVA repeated measures calculated at peak knee flexion revealed significant differences between marker sets for frontal and transverse planes (p < 0.05). Pairwise comparisons showed significant differences between some marker sets. Marker location and constraining DOF while measuring relatively large ranges of motion in this population are important considerations for data integrity. © 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.","constrained; elite youth football; knee kinematics; marker location; Marker-based motion capture; overhead squat; unconstrained kinematic model","Adolescent; Biomechanical Phenomena; Humans; Knee Joint; Male; Movement; Range of Motion, Articular; Soccer; Time and Motion Studies; analysis of variance; article; controlled study; cross correlation; data integrity; degree of freedom; football player; human; juvenile; kinematics; knee function; range of motion; rotation; time series analysis; adolescent; biomechanics; knee; male; movement (physiology); physiology; range of motion; soccer; task performance","Akbarshahi M., Schache A.G., Fernandez J.W., Baker R., Banks S., Pandy M.G., Non-invasive assessment of soft-tissue artifact and its effect on knee joint kinematics during functional activity, Journal of Biomechanics, 43, 7, pp. 1292-1301, (2010); Andersen M.S., Benoit D.L., Damsgaard M., Ramsey D.K., Rasmussen J., Do kinematic models reduce the effects of soft tissue artefacts in skin marker-based motion analysis? 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Brown; School of Applied Sciences Edinburgh, Edinburgh Napier University, Scotland, United Kingdom; email: Su.Brown@napier.ac.uk","","Routledge","14763141","","","33666149","English","Sports Biomech.","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85191930518" "Vial S.; Cochrane Wilkie J.; Turner M.; Blazevich A.J.","Vial, Shayne (57205153677); Cochrane Wilkie, Jodie (57702975600); Turner, Mitchell (57218626759); Blazevich, Anthony J. (6602804724)","57205153677; 57702975600; 57218626759; 6602804724","Fatigue does not increase limb asymmetry or induce proximal joint power shift in habitual, multi-speed runners","2023","Journal of Sports Sciences","41","12","","1250","1260","10","1","10.1080/02640414.2023.2268374","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85174192182&doi=10.1080%2f02640414.2023.2268374&partnerID=40&md5=eda9a5c2358376a49a1d067fd53d6152","Centre for Human Performance, School of Medical and Health Science, Edith Cowan University, Joondalup, Australia; Centre for Precision Health, School of Medical and Health Science, Edith Cowan University, Joondalup, Australia; Physical Activity, Sport and Exercise Research Theme, Faculty of Health, Southern Cross University, QLD, Australia","Vial S., Centre for Human Performance, School of Medical and Health Science, Edith Cowan University, Joondalup, Australia, Centre for Precision Health, School of Medical and Health Science, Edith Cowan University, Joondalup, Australia; Cochrane Wilkie J., Centre for Human Performance, School of Medical and Health Science, Edith Cowan University, Joondalup, Australia, Physical Activity, Sport and Exercise Research Theme, Faculty of Health, Southern Cross University, QLD, Australia; Turner M., Centre for Precision Health, School of Medical and Health Science, Edith Cowan University, Joondalup, Australia; Blazevich A.J., Centre for Human Performance, School of Medical and Health Science, Edith Cowan University, Joondalup, Australia","During prolonged jogging, joint moment and work tend to decrease in the distal (ankle) joint but increase at proximal (hip/knee) joints as performance fatigue manifests, and such adaptations might be expected to occur in sprinting. Fatigue is also thought to increase inter-limb asymmetries, which is speculated to influence injury risk. However, the effects of fatigue on sprint running gait have been incompletely studied, so these hypotheses remain untested. Using statistical parametric mapping, we compared 3-D kinematics and ground reaction force production between the dominant (DL) and non-dominant (NDL) legs of 13 soccer players during both non-fatigued and fatigued sprint running. Contrary to the tested hypotheses, relative between-leg differences were greater in non-fatigued than fatigued sprinting. DL generated higher propulsive impulse due to increased ankle work, while NDL exhibited greater vertical impulse, potentially due to greater hip flexion prior to downward foot acceleration. Whilst few changes were detected in DL once fatigued, NDL shifted towards greater horizontal force production, largely resulting from an increase in plantar flexion (distal-joint) moments and power. After fatiguing running, inter-limb asymmetry was reduced and no distal-to-proximal shift in joint work was detected. These adaptations may attenuate decreases in running speed whilst minimising injury risk. © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.","asymmetry; biomechanics; fatigue; gait; Sprint","Ankle Joint; Biomechanical Phenomena; Fatigue; Humans; Knee; Knee Joint; Leg; Lower Extremity; ankle; biomechanics; fatigue; human; knee; leg; lower limb","Bagesteiro L.B., Sainburg R.L., Handedness: Dominant arm advantages in control of limb dynamics, Journal of Neurophysiology, 88, 5, pp. 2408-2421, (2002); Bezodis N.E., Salo A.I., Trewartha G., Lower limb joint kinetics during the first stance phase in athletics sprinting: Three elite athlete case studies, Journal of Sports Sciences, 32, 8, pp. 738-746, (2014); Bezodis N.E., Trewartha G., Ilkka Tapio Salo A., Understanding the Effect of touchdown distance and ankle joint kinematics on sprint acceleration performance through computer simulation, Sports Biomechanics, 14, 2, pp. 232-245, (2015); Bishop C., Turner A., Read P., Effects of inter-limb asymmetries on physical and Sports performance: A systematic review, Journal of Sports Sciences, 36, 10, pp. 1135-1144, (2018); 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Vial; Centre for Human Performance, School of Medical and Health Science, Edith Cowan University, Joondalup, 6027, Australia; email: vial@ecu.edu.au","","Routledge","02640414","","JSSCE","37837327","English","J. Sports Sci.","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85174192182" "Astrella A.; Iordanov D.; De Caro D.; Jiménez-Reyes P.; Mendiguchia J.","Astrella, Andrea (59126331900); Iordanov, Daniel (57216342537); De Caro, Dario (59125816300); Jiménez-Reyes, Pedro (36696240200); Mendiguchia, Jurdan (16239420700)","59126331900; 57216342537; 59125816300; 36696240200; 16239420700","Biceps femoris muscle-tendon strain during an entire overground sprint acceleration: a biomechanical explanation for hamstring injuries in the acceleration phase","2024","Sports Biomechanics","","","","","","","0","10.1080/14763141.2024.2353233","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85192964350&doi=10.1080%2f14763141.2024.2353233&partnerID=40&md5=dfe73945ee7499b9795518e8e7816fe6","International Doctoral School, Rey Juan Carlos University, Madrid, Spain; Department of Muscle Science, RX2 Sports & Health, Madrid, Spain; Sports Department, Universidad Politecnica de Madrid, Madrid, Spain; Centre for Sport Studies, Rey Juan Carlos University, Madrid, Spain; Department of Physical Therapy, ZENTRUM Rehab and Performance Center, Barañain, Spain","Astrella A., International Doctoral School, Rey Juan Carlos University, Madrid, Spain, Department of Muscle Science, RX2 Sports & Health, Madrid, Spain; Iordanov D., Sports Department, Universidad Politecnica de Madrid, Madrid, Spain; De Caro D., Department of Muscle Science, RX2 Sports & Health, Madrid, Spain; Jiménez-Reyes P., Centre for Sport Studies, Rey Juan Carlos University, Madrid, Spain; Mendiguchia J., Department of Muscle Science, RX2 Sports & Health, Madrid, Spain, Department of Physical Therapy, ZENTRUM Rehab and Performance Center, Barañain, Spain","The objectives of this study were to analyse the peak muscle-tendon (MT) strain of the hamstring during an entire acceleration sprint overground and examine their relationship with relative joint angles and segment orientation in the sagittal plane, which are the direct causes of MT strain. Kinematic data were recorded using a 3D inertial motion capture system in 21 male semi-professional soccer players during 40-metre overground sprint. Scaled musculoskeletal models were used to estimate peak MT strain in the hamstring over 16 steps. Biceps femoris long head (BFLH) exhibited the largest peaks in MT strain compared to semitendinosus (ST) and semimembranosus (SM) muscles across all the steps, with its overall strain decreased as the number of steps and maximum speed increased. Hip flexion angle was found to be a strong predictor (p < 0.001) of joint angles, being the orientation of the pelvis in the sagittal plane of the segment with the greatest influence (p < 0.001) on the peak MT strain of BFLH during sprinting. The current study provides a biomechanical explanation for the high proportion of hamstring injuries in the acceleration phase of sprinting. © 2024 International Society of Biomechanics in Sports.","hamstring injury; motion analysis; muscle injury; musculoskeletal modelling; Running biomechanics","","Blair S., Duthie G., Robertson S., Hopkins W., Ball K., Concurrent validation of an inertial measurement system to quantify kicking biomechanics in four football codes, Journal of Biomechanics, 73, pp. 24-32, (2018); Chumanov E.S., Heiderscheit B.C., Thelen D.G., The effect of speed and influence of individual muscles on hamstring mechanics during the swing phase of sprinting, Journal of Biomechanics, 40, 16, pp. 3555-3562, (2007); Chumanov E.S., Heiderscheit B.C., Thelen D.G., Hamstring musculotendon dynamics during stance and swing phases of high-speed running, Medicine and Science in Sports and Exercise, 43, 3, pp. 525-532, (2011); Chumanov E.S., Schache A.G., Heiderscheit B.C., Thelen D.G., Hamstrings are most susceptible to injury during the late swing phase of sprinting, British Journal of Sports Medicine, 46, 2, (2012); Clark K.P., Ryan L.J., Weyand P.G., A general relationship links gait mechanics and running ground reaction forces, The Journal of Experimental Biology, 220, pp. 247-258, (2017); Clark K.P., Weyand P.G., Are running speeds maximized with simple-spring stance mechanics?, Journal of Applied Physiology, 117, 6, pp. 604-615, (2014); Daly C., Persson U.M., Twycross-Lewis R., Woledge R.C., Morrissey D., The biomechanics of running in athletes with previous hamstring injury: A case-control study, Scandinavian Journal of Medicine & Science in Sports, 26, 4, pp. 413-420, (2016); Delp S.L., Anderson F.C., Arnold A.S., Loan P., Habib A., John C.T., Guendelman E., Thelen D.G., OpenSim: Open-source software to create and analyze dynamic simulations of movement, IEEE Transactions on Biomedical Engineering, 54, 11, pp. 1940-1950, (2007); Di Paolo S., Lopomo N.F., Della Villa F., Rehabilitation and return to sport assessment after anterior cruciate ligament injury: Quantifying joint kinematics during complex high-speed tasks through wearable sensors, Sensors (Basel), 21, 7, (2021); Di Raimondo G., Vanwanseele B., van der Have A., Emmerzaal J., Willems M., Killen B.A., Jonkers I., Inertial sensor-to-segment calibration for accurate 3D joint angle calculation for use in OpenSim, Sensors (Basel), 22, 9, (2022); Ekstrand J., Bengtsson H., Walden M., Davison M., Khan K.M., Hagglund M., Hamstring injury rates have increased during recent seasons and now constitute 24% of all injuries in men’s professional football: The UEFA Elite Club injury study from 2001/02 to 2021/22, British Journal of Sports Medicine, 57, 5, pp. 292-298, (2022); Faude O., Koch T., Meyer T., Straight sprinting is the most frequent action in goal situations in professional football, Journal of Sports Sciences, 30, 7, pp. 625-631, (2012); Franz J.R., Paylo K.W., Dicharry J., Riley P.O., Kerrigan D.C., Changes in the coordination of hip and pelvis kinematics with mode of locomotion, Gait & Posture, 29, 3, pp. 494-498, (2009); Garrett W.E., Muscle strain injuries: Clinical and basic aspects, Medicine and Science in Sports and Exercise, 22, 4, pp. 436-443, (1990); Gronwald T., Klein C., Hoenig T., Hamstring injury patterns in professional male football (soccer): A systematic video analysis of 52 cases, British Journal of Sports Medicine, 56, 3, pp. 165-171, (2022); Guilhem G., Doguet V., Hauraix H., Lacourpaille L., Jubeau M., Nordez A., Dorel S., Muscle force loss and soreness subsequent to maximal eccentric contractions depend on the amount of fascicle strain in vivo, Acta Physiologica, 217, 2, pp. 152-163, (2016); Heiderscheit B.C., Hoerth D.M., Chumanov E.S., Swanson S.C., Thelen B.J., Thelen D.G., Identifying the time of occurrence of a hamstring strain injury during treadmill running: A case study, Clin Biomech (Bristol, Avon), 20, 10, pp. 1072-1078, (2005); Higashihara A., Nagano Y., Ono T., Fukubayashi T., Differences in hamstring activation characteristics between the acceleration and maximum-speed phases of sprinting, Journal of Sports Sciences, 36, 12, pp. 1313-1318, (2018); Higashihara A., Nagano Y., Takahashi K., Fukubayashi T., Effects of forward trunk lean on hamstring muscle kinematics during sprinting, Journal of Sports Sciences, 33, 13, pp. 1366-1375, (2015); Jacobs R., van Ingen Schenau G.J., Intermuscular coordination in a sprint push-off, Journal of Biomechanics, 25, 9, pp. 953-965, (1992); Kenneally-Dabrowski C.J.B., Brown N.A.T., Lai A.K.M., Perriman D., Spratford W., Serpell B.G., Late swing or early stance? A narrative review of hamstring injury mechanisms during high-speed running, Scandinavian Journal of Medicine & Science in Sports, 29, 8, pp. 1083-1091, (2019); Lahti J., Mendiguchia J., Ahtiainen J., Anula L., Kononen T., Kujala M., Matinlauri A., Peltonen V., Thibault M., Toivonen R.-M., Edouard P., Morin J.B., Multifactorial individualised programme for hamstring muscle injury risk reduction in professional football: Protocol for a prospective cohort study, BMJ Open Sport and Exercise Medicine, 6, 1, (2020); Lai A.K.M., Arnold A.S., Wakeling J.M., Why are antagonist muscles co-activated in my simulation? a musculoskeletal model for analysing human locomotor tasks, Annals of Biomedical Engineering, 45, 12, pp. 2762-2774, (2017); Lieber R.L., Friden J., Muscle damage is not a function of muscle force but active muscle strain, Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology, 74, 2, pp. 520-526, (1993); Mendiguchia J., Aranzazu Garrues M., Schilders E., Myer G.D., Dalmau-Pastor M., Anterior pelvic tilt increases hamstring strain and is a key factor to target for injury prevention and rehabilitation, Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA, 32, 3, pp. 573-582, (2024); Mendiguchia J., Castano-Zambudio A., Jimenez-Reyes P., Morin J., Edouard P., Conceicao F., Tawiah-Dodoo J., Colyer S.L., Can we modify maximal speed running posture? Implications for performance and hamstring injury management, International Journal of Sports Physiology and Performance, 17, 3, pp. 374-383, (2022); Mendiguchia J., Edouard P., Samozino P., Brughelli M., Cross M., Ross A., Gill N., Morin J.B., Field monitoring of sprinting power–force–velocity profile before, during and after hamstring injury: Two case reports, Journal of Sports Sciences, 34, 6, pp. 535-541, (2016); Mendiguchia J., Samozino P., Martinez-Ruiz E., Brughelli M., Schmikli S., Morin J.-B., Mendez-Villanueva A., Progression of mechanical properties during on-field sprint running after returning to sports from a hamstring muscle injury in soccer players, International Journal of Sports Medicine, 35, 8, pp. 690-695, (2014); Morin J.B., Edouard P., Samozino P., Technical ability of force application as a determinant factor of sprint performance, Medicine and Science in Sports and Exercise, 43, 9, pp. 1680-1688, (2011); Morin J.B., Gimenez P., Edouard P., Arnal P., Jimenez-Reyes P., Samozino P., Brughelli M., Mendiguchia J., Sprint acceleration mechanics: The major role of hamstrings in horizontal force production, Frontiers in Physiology, 6, (2015); Nagahara R., Matsubayashi T., Matsuo A., Zushi K., Kinematics of the thorax and pelvis during accelerated sprinting, The Journal of Sports Medicine and Physical Fitness, 58, 9, pp. 1253-1263, (2018); Nagano Y., Higashihara A., Takahashi K., Fukubayashi T., Mechanics of the muscles crossing the hip joint during sprint running, Journal of Sports Sciences, 32, 18, pp. 1722-1728, (2014); Nijmeijer E.M., Heuvelmans P., Bolt R., Gokeler A., Otten E., Benjaminse A., Concurrent validation of the xsens IMU system of lower-body kinematics in jump-landing and change-of-direction tasks, Journal of Biomechanics, 154, (2023); Pons E., Ponce-Bordon J.C., Diaz-Garcia J., Lopez Del Campo R., Resta R., Peirau X., Garcia-Calvo T., A longitudinal exploration of match running performance during a football match in the Spanish La Liga: A four-season study, International Journal of Environmental Research and Public Health, 18, 3, (2021); Rajagopal A., Dembia C.L., Ms D., Delp D.D., Hicks J.L., Delp S.L., Full-body musculoskeletal model for muscle-driven simulation of human gait, IEEE Transactions on Bio-Medical Engineering, 63, 10, pp. 2068-2079, (2016); Schache A.G., Dorn T.W., Blanch P.D., Brown N.A., Pandy M.G., Mechanics of the human hamstring muscles during sprinting, Medicine and Science in Sports and Exercise, 44, 4, pp. 647-658, (2012); Schache A.G., Kim H.J., Morgan D.L., Pandy M.G., Hamstring muscle forces prior to and immediately following an acute sprinting-related muscle strain injury, Gait & Posture, 32, 1, pp. 136-140, (2010); Schache A.G., Wrigley T.V., Baker R., Pandy M.G., Biomechanical response to hamstring muscle strain injury, Gait & Posture, 29, 2, pp. 332-338, (2009); Schepers M., Giuberti M., Bellusci G., Xsens MVN: Consistent tracking of human motion using inertial sensing, Xsens Technol, pp. 1-8, (2018); Schuermans J., Van Tiggelen D., Palmans T., Danneels L., Witvrouw E., Deviating running kinematics and hamstring injury susceptibility in male soccer players: Cause or consequence?, Gait & Posture, 57, pp. 270-277, (2017); Thelen D.G., Chumanov E.S., Hoerth D.M., Best T.M., Swanson S.C., Li L.I., Young M., Heiderscheit B.C., Hamstring muscle kinematics during treadmill sprinting, Medicine and Science in Sports and Exercise, 37, 1, pp. 108-114, (2005); Visser J.J., Hoogkamer J.E., Bobbert M.F., Huijing P.A., Length and moment arm of human leg muscles as a function of knee and hip-joint angles, European Journal of Applied Physiology and Occupational Physiology, 61, 5-6, pp. 453-460, (1990); Woods C., Hawkins R.D., Maltby S., Hulse M., Thomas A., Hodson A., The Football Association Medical Research Programme: An audit of injuries in professional football–analysis of hamstring injuries, British Journal of Sports Medicine, 38, 1, pp. 36-41, (2004)","A. Astrella; International Doctoral School, Rey Juan Carlos University, Madrid, Spain; email: Astre92@hotmail.it","","Routledge","14763141","","","","English","Sports Biomech.","Article","Article in press","","Scopus","2-s2.0-85192964350" "Moretti L.; Bortone I.; Delmedico M.; Cassano D.G.; Caringella N.; Bizzoca D.; Moretti B.","Moretti, Lorenzo (8302956300); Bortone, Ilaria (56347065600); Delmedico, Michelangelo (57214991072); Cassano, Danilo Giuseppe (57223345825); Caringella, Nuccio (57220152089); Bizzoca, Davide (56743348700); Moretti, Biagio (7003833156)","8302956300; 56347065600; 57214991072; 57223345825; 57220152089; 56743348700; 7003833156","Clinical, Biomechanical, and Self-reported Health Status After ACL Reconstruction With Meniscal Repair in Soccer Players: Results at Minimum 1-Year Follow-up","2023","Orthopaedic Journal of Sports Medicine","11","7","","","","","1","10.1177/23259671231177309","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85166524470&doi=10.1177%2f23259671231177309&partnerID=40&md5=50daa79a7625ddfb5ba1863d6cdc16b2","Orthopaedic and Trauma Unit, Department of Translational Biomedicine and Neuroscience “DiBraiN,”, University of Bari “Aldo Moro,”, Bari, Italy","Moretti L., Orthopaedic and Trauma Unit, Department of Translational Biomedicine and Neuroscience “DiBraiN,”, University of Bari “Aldo Moro,”, Bari, Italy; Bortone I., Orthopaedic and Trauma Unit, Department of Translational Biomedicine and Neuroscience “DiBraiN,”, University of Bari “Aldo Moro,”, Bari, Italy; Delmedico M., Orthopaedic and Trauma Unit, Department of Translational Biomedicine and Neuroscience “DiBraiN,”, University of Bari “Aldo Moro,”, Bari, Italy; Cassano D.G., Orthopaedic and Trauma Unit, Department of Translational Biomedicine and Neuroscience “DiBraiN,”, University of Bari “Aldo Moro,”, Bari, Italy; Caringella N., Orthopaedic and Trauma Unit, Department of Translational Biomedicine and Neuroscience “DiBraiN,”, University of Bari “Aldo Moro,”, Bari, Italy; Bizzoca D., Orthopaedic and Trauma Unit, Department of Translational Biomedicine and Neuroscience “DiBraiN,”, University of Bari “Aldo Moro,”, Bari, Italy; Moretti B., Orthopaedic and Trauma Unit, Department of Translational Biomedicine and Neuroscience “DiBraiN,”, University of Bari “Aldo Moro,”, Bari, Italy","Background: Performing meniscal repair with anterior cruciate ligament reconstruction (ACLR) has been shown to contribute to the long-term preservation of knee health and gait biomechanics. Purpose: To evaluate the role of meniscal repair in the performance of semiprofessional soccer players who returned to sport after ACLR. Study Design: Case series; Level of evidence, 4. Methods: This study included 51 male soccer players (mean ± SD age, 28.82 ± 5.33 years) who underwent ACLR at a single institution between July 2018 and July 2019. The players were divided into 3 groups according to surgery type: ACLR only (n = 30), ACLR with lateral meniscal repair (n = 9), and ACLR with medial meniscal repair (n = 12). Outcomes were evaluated through clinical examination, self-reported health questionnaires (Cincinnati Knee Rating System, Tegner activity score, Tegner Lysholm Knee Scoring Scale, Tampa Scale of Kinesiophobia, and ACL–Return to Sport After Injury), and biomechanical performance evaluations (balance, strength, coordination, and symmetry tests). Parametric and nonparametric tests were carried out for multiple comparisons. Results: The mean ± SD follow-up time was 20.75 ± 9.38 months. Although no significant differences emerged in clinical and self-reported health status, almost all the physical parameters tested resulted in lower performance in players treated with ACLR and meniscal repair. Moreover, patients with ACLR with lateral meniscal repair reported higher pain and fear of reinjury, with lower outcomes in terms of strength, symmetry, and coordination as compared with the other 2 groups. Balance abilities were significantly affected in players who underwent meniscal repair as compared with those who underwent ACLR only. Conclusion: The findings showed that biomechanical performance measures and fear of reinjury were significantly worse in soccer players with associated meniscal repair at a minimum 1-year follow-up, especially in those with a lateral meniscal tear. © The Author(s) 2023.","ACL injury; motion analysis; return to sport; sports performance; wearable sensors","adult; anterior cruciate ligament injury; anterior cruciate ligament reconstruction; Article; assessment of humans; athletic performance; balance ability; biomechanics; cincinnati knee rating system; clinical examination; exercise test; fear; fear of reinjury; follow up; health status; higher pain; human; jumping; lateral meniscal repair; leg stability test; male; medial meniscal repair; meniscal repair; motion; pain intensity; parkour test; questionnaire; quick feet test; return to sport; self report; semiprofessional soccer player; soccer player; static balance test; Tampa scale for kinesiophobia; Tegner activity score; tegner lysholm knee scoring scale","Basar B., Basar G., Aybar A., Kurtan A., Basar H., The effects of partial meniscectomy and meniscal repair on the knee proprioception and function, J Orthop Surg, 28, 1, (2020); Beaufils P., Becker R., Kopf S., Et al., Surgical management of degenerative meniscus lesions: the 2016 ESSKA meniscus consensus, Joints, 5, 2, pp. 59-69, (2017); Bortone I., Moretti L., Bizzoca D., Et al., The importance of biomechanical assessment after return to play in athletes with ACL-reconstruction, Gait Posture, 88, pp. 240-246, (2021); Briggs K.K., Lysholm J., Tegner Y., Rodkey W.G., Kocher M.S., Richard Steadman J., The reliability, validity, and responsiveness of the Lysholm score and Tegner Activity Scale for anterior cruciate ligament injuries of the knee, Am J Sports Med, 37, 5, pp. 890-897, (2009); Capin J.J., Khandha A., Buchanan T.S., Snyder-Mackler L., Partial medial meniscectomy leads to altered walking mechanics two years after anterior cruciate ligament reconstruction: meniscal repair does not, Gait Posture, 74, pp. 87-93, (2019); Cristiani R., Ronnblad E., Engstrom B., Forssblad M., Stalman A., Medial meniscus resection increases and medial meniscus repair preserves anterior knee laxity: a cohort study of 4497 patients with primary anterior cruciate ligament reconstruction, Am J Sports Med, 46, 2, pp. 357-362, (2018); Dan M.J., Lun K.K., Dan L., Et al., Wearable inertial sensors and pressure MAT detect risk factors associated with ACL graft failure that are not possible with traditional return to sport assessments, BMJ Open Sport Exerc Med, 5, 1, (2019); Falese L., Della Valle P., Federico B., Epidemiology of football (soccer) injuries in the 2012/2013 and 2013/2014 seasons of the Italian Serie A, Res Sports Med, 24, 4, pp. 426-432, (2016); Gupta R., Kapoor A., Mittal N., Soni A., Khatri S., Masih G.D., The role of meniscal tears and meniscectomy in the mechanical stability of the anterior cruciate ligament deficient knee, Knee, 25, 6, pp. 1051-1056, (2018); Hayes C.W., Brigido M.K., Jamadar D.A., Propeck T., Mechanism-based pattern approach to classification of complex injuries of the knee depicted at MR imaging, Radiographics, pp. S121-S134, (2000); Herbst E., Hoser C., Hildebrandt C., Et al., Functional assessments for decision-making regarding return to sports following ACL reconstruction. Part II: clinical application of a new test battery, Knee Surg Sports Traumatol Arthrosc, 23, 5, pp. 1283-1291, (2015); Hildebrandt C., Muller L., Zisch B., Huber R., Fink C., Raschner C., Functional assessments for decision-making regarding return to sports following ACL reconstruction. Part I: development of a new test battery, Knee Surg Sports Traumatol Arthrosc, 23, 5, pp. 1273-1281, (2015); Huang H., Nagao M., Arita H., Et al., Reproducibility, responsiveness and validation of the Tampa Scale for Kinesiophobia in patients with ACL injuries, Health Qual Life Outcomes, 17, 1, (2019); Ithurburn M.P., Paterno M.V., Thomas S., Et al., Clinical measures associated with knee function over two years in young athletes after ACL reconstruction, Knee, 26, 2, pp. 355-363, (2019); LaPrade C.M., Dornan G.J., Granan L.P., LaPrade R.F., Engebretsen L., Outcomes after anterior cruciate ligament reconstruction using the Norwegian Knee Ligament Registry of 4691 patients: how does meniscal repair or resection affect short-term outcomes?, Am J Sports Med, 43, 7, pp. 1591-1597, (2015); LaPrade C.M., Ellman M.B., Rasmussen M.T., Et al., Anatomy of the anterior root attachments of the medial and lateral menisci: a quantitative analysis, Am J Sports Med, 42, 10, pp. 2386-2392, (2014); Lubowitz J.H., Ahmad C.S., Anderson K., All-inside anterior cruciate ligament graft-link technique: second-generation, no-incision anterior cruciate ligament reconstruction, Arthroscopy, 27, 5, pp. 717-727, (2011); Wright R.W., Huston L.J., Et al., Meniscal repair in the setting of revision anterior cruciate ligament reconstruction: results from the MARS cohort, Am J Sports Med, 48, 12, pp. 2978-2985, (2020); Nicolini A.P., de Carvalho R.T., Matsuda M.M., Sayum J.F., Cohen M., Common injuries in athletes’ knee: experience of a specialized center, Acta Ortop Bras, 22, 3, pp. 127-131, (2014); Persson F., Turkiewicz A., Bergkvist D., Neuman P., Englund M., The risk of symptomatic knee osteoarthritis after arthroscopic meniscus repair vs partial meniscectomy vs the general population, Osteoarthritis Cartilage, 26, 2, pp. 195-201, (2018); Phillips M., Ronnblad E., Lopez-Rengstig L., Et al., Meniscus repair with simultaneous ACL reconstruction demonstrated similar clinical outcomes as isolated ACL repair: a result not seen with meniscus resection, Knee Surg Sports Traumatol Arthrosc, 26, 8, pp. 2270-2277, (2018); Pujol N., Beaufils P., Save the meniscus again!, Knee Surg Sports Traumatol Arthrosc, 27, 2, pp. 341-342, (2019); Rodriguez-Roiz J.M., Sastre-Solsona S., Popescu D., Montanana-Burillo J., Combalia-Aleu A., The relationship between ACL reconstruction and meniscal repair: quality of life, sports return, and meniscal failure rate-2- to 12-year follow-up, J Orthop Surg Res, 15, 1, (2020); Sadeqi M., Klouche S., Bohu Y., Herman S., Lefevre N., Gerometta A., Progression of the psychological ACL-RSI score and return to sport after anterior cruciate ligament reconstruction: a prospective 2-year follow-up study from the French Prospective Anterior Cruciate Ligament Reconstruction Cohort Study (FAST), Orthop J Sports Med, 6, 12, (2018); Saka T., Principles of postoperative anterior cruciate ligament rehabilitation, World J Orthop, 5, 4, pp. 450-459, (2014); Sarraj M., Coughlin R.P., Solow M., Et al., Anterior cruciate ligament reconstruction with concomitant meniscal surgery: a systematic review and meta-analysis of outcomes, Knee Surg Sports Traumatol Arthrosc, 27, 11, pp. 3441-3452, (2019); Senorski E.H., Svantesson E., Beischer S., Et al., Concomitant injuries may not reduce the likelihood of achieving symmetrical muscle function one year after anterior cruciate ligament reconstruction: a prospective observational study based on 263 patients, Knee Surg Sports Traumatol Arthrosc, 26, 10, pp. 2966-2977, (2018); Shelbourne K.D., Donald Shelbourne K., Barnes A.F., Gray T., Correlation of a Single Assessment Numeric Evaluation (SANE) rating with modified Cincinnati Knee Rating System and IKDC subjective total scores for patients after ACL reconstruction or knee arthroscopy, Am J Sports Med, 40, 11, pp. 2487-2491, (2012); Singh N., International epidemiology of anterior cruciate ligament injuries, Orthopedic Res Online J, 1, 5, pp. 94-96, (2018); Svantesson E., Cristiani R., Hamrin Senorski E., Forssblad M., Samuelsson K., Stalman A., Meniscal repair results in inferior short-term outcomes compared with meniscal resection: a cohort study of 6398 patients with primary anterior cruciate ligament reconstruction, Knee Surg Sports Traumatol Arthrosc, 26, 8, pp. 2251-2258, (2018); Webster K.E., Feller J.A., Kimp A., Devitt B.M., Medial meniscal and chondral pathology at the time of revision anterior cruciate ligament reconstruction results in inferior mid-term patient-reported outcomes, Knee Surg Sports Traumatol Arthrosc, 26, 4, pp. 1059-1064, (2018)","I. Bortone; Orthopaedic and Trauma Unit, Department of Translational Biomedicine and Neuroscience “DiBraiN,”, University of Bari “Aldo Moro,”, Bari, Italy; email: ilaria.bortone@uniba.it","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85166524470" "Parolini F.; Bertolini G.; Santos R.; Abreu M.; Nogueira A.L.; Bertoncello D.","Parolini, Franciele (58668650800); Bertolini, Gladson (24502792100); Santos, Rubim (43861816800); Abreu, Manoela (58846336100); Nogueira, Ana Laura (58846409100); Bertoncello, Dernival (37092418000)","58668650800; 24502792100; 43861816800; 58846336100; 58846409100; 37092418000","Unlocking the Potential: Increasing Muscle Strength in Lower Limbs of Youth Soccer Players over Five Weeks through Mat Pilates Training—A Pilot Study","2024","Sensors","24","2","473","","","","0","10.3390/s24020473","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85183287465&doi=10.3390%2fs24020473&partnerID=40&md5=978432a43a3201d55e31b934708e4e6a","Human Movement Analysis Laboratory (LAHM), Federal University of Triângulo Mineiro (UFTM), Av. Getúlio Guaritá, 159, Nossa Sra. da Abadia, MG, Uberaba, 38025-440, Brazil; Center for Rehabilitation Research (CIR), School of Health, Polytechnic Institute of Porto, Rua Dr. António Bernardino de Almeida, 400, Porto, 4200-072, Portugal; Center of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, Porto, 4200-450, Portugal; Porto Biomechanics Laboratory (LABIOMEP), University of Porto, Porto, 4200-450, Portugal; Department of Physiotherapy, State University of Western Paraná (UNIOESTE), PR, Cascavel, 85819-110, Brazil","Parolini F., Human Movement Analysis Laboratory (LAHM), Federal University of Triângulo Mineiro (UFTM), Av. Getúlio Guaritá, 159, Nossa Sra. da Abadia, MG, Uberaba, 38025-440, Brazil, Center for Rehabilitation Research (CIR), School of Health, Polytechnic Institute of Porto, Rua Dr. António Bernardino de Almeida, 400, Porto, 4200-072, Portugal, Center of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, Porto, 4200-450, Portugal, Porto Biomechanics Laboratory (LABIOMEP), University of Porto, Porto, 4200-450, Portugal; Bertolini G., Department of Physiotherapy, State University of Western Paraná (UNIOESTE), PR, Cascavel, 85819-110, Brazil; Santos R., Center for Rehabilitation Research (CIR), School of Health, Polytechnic Institute of Porto, Rua Dr. António Bernardino de Almeida, 400, Porto, 4200-072, Portugal; Abreu M., Human Movement Analysis Laboratory (LAHM), Federal University of Triângulo Mineiro (UFTM), Av. Getúlio Guaritá, 159, Nossa Sra. da Abadia, MG, Uberaba, 38025-440, Brazil; Nogueira A.L., Human Movement Analysis Laboratory (LAHM), Federal University of Triângulo Mineiro (UFTM), Av. Getúlio Guaritá, 159, Nossa Sra. da Abadia, MG, Uberaba, 38025-440, Brazil; Bertoncello D., Human Movement Analysis Laboratory (LAHM), Federal University of Triângulo Mineiro (UFTM), Av. Getúlio Guaritá, 159, Nossa Sra. da Abadia, MG, Uberaba, 38025-440, Brazil","The interest in soccer generally starts during childhood, with children and young people often looking for opportunities in sports. New exercise techniques can be effective in improving training. The aim of this study was to compare the effects on the strength and physical posture of a group practicing Pilates with another not practicing Pilates, both undergoing continuous football training. In this controlled randomized clinical trial, the participants were 15 soccer club members, who had a training frequency of least three times weekly. The sample was divided into a control group (n = 7) of players who did not undergo any therapeutic intervention (only the usual training) and a Pilates group (n = 8) of players who participated in the mat Pilates program. The intervention consisted of fifteen sessions. Postural evaluations were performed using biophotogrammetry and force analysis. Significant improvements were obtained in terms of increased muscle strength (p = 0.001) for the Pilates group, but there were no significant postural alterations when comparing the two groups. Five weeks of mat Pilates was sufficient to increase lower limb muscle strength in young football players. This pilot study indicates that Mat Pilates as a method that could be planned to be included in training. © 2024 by the authors.","biomechanics; instrumentation; mat Pilates; sports; training; youth soccer players","Adolescent; Child; Exercise Movement Techniques; Humans; Lower Extremity; Muscle Strength; Pilot Projects; Soccer; Muscle; Personnel training; Control groups; Instrumentation; Lower limb; Mat pilate; Muscle strength; Pilot studies; Randomized clinical trials; Soccer player; Young peoples; Youth soccer player; adolescent; child; controlled study; human; kinesiotherapy; lower limb; muscle strength; pilot study; randomized controlled trial; soccer; Sports","Uehara L., Falcous M., Button C., Davids K., Araujo D., de Paula A.R., Saunders J., The Poor “Wealth” of Brazilian Football: How Poverty May Shape Skill and Expertise of Players, Front. Sports Act. 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Dev, 11, (2022); Cibinello F.U., de Jesus Neves J.C., Carvalho M.Y.L., Valenciano P.J., Fujisawa D.S., Effect of Pilates Matwork exercises on posterior chain flexibility and trunk mobility in school children: A randomized clinical trial, J. Bodyw. Mov. Ther, 24, pp. 176-181, (2020); Hornsby E., Johnston L.M., Effect of Pilates Intervention on Physical Function of Children and Youth: A Systematic Review, Arch. Phys. Med. Rehabil, 101, pp. 317-328, (2020); Campos de Oliveira L., Goncalves de Oliveira R., Pires-Oliveira D.A., Effects of Pilates on muscle strength, postural balance and quality of life of older adults: A randomized, controlled, clinical trial, J. Phys. Ther. Sci, 27, pp. 871-876, (2015); Bueno de Souza R.O., Marcon L.F., Arruda A.S.F., Pontes Junior F.L., Melo R.C., Effects of Mat Pilates on Physical Functional Performance of Older Adults: A Meta-analysis of Randomized Controlled Trials, Am. J. Phys. Med. 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Disord, 23, (2022); Cruz-Ferreira A., Fernandes J., Laranjo L., Bernardo L.M., Silva A., A systematic review of the effects of pilates method of exercise in healthy people, Arch. Phys. Med. Rehabil, 92, pp. 2071-2081, (2011); Dptsc E., Larsen D.P.T., Ozawa D.P.T., Wilson M.P.T., Kennedy M.P.T., The effects of Pilates-based exercise on dynamic balance in healthy adults, J. Bodyw. Mov. Ther, 11, pp. 238-242, (2007); Rossi D.M., Morcelli M.H., Marques N.R., Hallal C.Z., Goncalves M., Laroche D.P., Navega M.T., Antagonist coactivation of trunk stabilizer muscles during Pilates exercises, J. Bodyw. Mov. Ther, 18, pp. 34-41, (2014); Sayenko D.G., Rath M., Ferguson A.R., Burdick J.W., Havton L.A., Edgerton V.R., Gerasimenko Y.P., Self-Assisted Standing Enabled by Non-Invasive Spinal Stimulation after Spinal Cord Injury, J. Neurotrauma, 36, pp. 1435-1450, (2019); Queiroz L., Bertolini S., Bennemann R., Silva E., The effect Mat Pilates practice on muscle mass in elderly women, Rev. Rede Enferm. Nordeste, 17, pp. 618-625, (2016); Conceicao J.S., Mergener C.R., Eficácia do método Pilates no solo em pacientes com lombalgia crônica: Relato de casos, Rev. Dor, 13, pp. 385-388, (2012); Coutinho J.M., Zuurbier S.M., Aramideh M., Stam J., The incidence of cerebral venous thrombosis: A cross-sectional study, Stroke, 43, pp. 3375-3377, (2012); Rago V., Rebelo A., Krustrup P., Mohr M., Contextual Variables and Training Load throughout a Competitive Period in a Top-Level Male Soccer Team, J. Strength. Cond. Res, 35, pp. 3177-3183, (2021)","R. Santos; Center for Rehabilitation Research (CIR), School of Health, Polytechnic Institute of Porto, Porto, Rua Dr. António Bernardino de Almeida, 400, 4200-072, Portugal; email: rss@ess.ipp.pt","","Multidisciplinary Digital Publishing Institute (MDPI)","14248220","","","38257568","English","Sensors","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85183287465" "Jokela A.; Mechó S.; Pasta G.; Pleshkov P.; García-Romero-Pérez A.; Mazzoni S.; Kosola J.; Vittadini F.; Yanguas J.; Pruna R.; Valle X.; Lempainen L.","Jokela, Aleksi (57331171000); Mechó, Sandra (23994157800); Pasta, Giulio (55999863000); Pleshkov, Pavel (57540696900); García-Romero-Pérez, Alvaro (57226346870); Mazzoni, Stefano (57208242388); Kosola, Jussi (37110858100); Vittadini, Filippo (57105762300); Yanguas, Javier (55400199000); Pruna, Ricard (26432827600); Valle, Xavier (37862078100); Lempainen, Lasse (16175245500)","57331171000; 23994157800; 55999863000; 57540696900; 57226346870; 57208242388; 37110858100; 57105762300; 55400199000; 26432827600; 37862078100; 16175245500","Indirect Rectus Femoris Injury Mechanisms in Professional Soccer Players: Video Analysis and Magnetic Resonance Imaging Findings","2023","Clinical Journal of Sport Medicine","33","5","","475","482","7","1","10.1097/JSM.0000000000001131","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85169624981&doi=10.1097%2fJSM.0000000000001131&partnerID=40&md5=b8e1a535afc5f53a7a2b26d155d7f0cf","Faculty of Medicine, University of Turku, Turku, Finland; Department of Orthopaedics and Traumatology, Turku University Hospital, Turku, Finland; FCBarcelona, Medical Department, Barcelona, Spain; MedicalDepartment, ParmaCalcio, Parma, Italy; FC Zenit, St. Petersburg, Russian Federation; Watford FC, Injury Prevention and Rehabilitation Department, Watford, United Kingdom; Physiotherapy Department, Universidad Camilo José Cela, Madrid, Spain; Football Club AC Milan, Milan, Italy; Department of Physical Activity andHealth, PaavoNurmi Centre,University of Turku, Turku, Finland; Department ofOrthopaedics and Traumatology, Kanta-HämeCentralHospital, Hämeenlinna, Finland; Venezia Football Club, Venice, Italy; FinnOrthopaedics/Hospital Pihlajalinna, Turku, Finland; Ripoll y De Prado, FIFA Medical Centre of Excellence, Madrid, Spain","Jokela A., Faculty of Medicine, University of Turku, Turku, Finland, Department of Orthopaedics and Traumatology, Turku University Hospital, Turku, Finland; Mechó S., FCBarcelona, Medical Department, Barcelona, Spain; Pasta G., MedicalDepartment, ParmaCalcio, Parma, Italy; Pleshkov P., FC Zenit, St. Petersburg, Russian Federation; García-Romero-Pérez A., Watford FC, Injury Prevention and Rehabilitation Department, Watford, United Kingdom, Physiotherapy Department, Universidad Camilo José Cela, Madrid, Spain; Mazzoni S., Football Club AC Milan, Milan, Italy; Kosola J., Department of Physical Activity andHealth, PaavoNurmi Centre,University of Turku, Turku, Finland, Department ofOrthopaedics and Traumatology, Kanta-HämeCentralHospital, Hämeenlinna, Finland; Vittadini F., Venezia Football Club, Venice, Italy; Yanguas J., FCBarcelona, Medical Department, Barcelona, Spain; Pruna R., FCBarcelona, Medical Department, Barcelona, Spain; Valle X., FCBarcelona, Medical Department, Barcelona, Spain; Lempainen L., Department of Physical Activity andHealth, PaavoNurmi Centre,University of Turku, Turku, Finland, FinnOrthopaedics/Hospital Pihlajalinna, Turku, Finland, Ripoll y De Prado, FIFA Medical Centre of Excellence, Madrid, Spain","Objective: To describe injury mechanisms and magnetic resonance imaging (MRI) findings in acute rectus femoris (RF) injuries of soccer players using a systematic video analysis. Design: Descriptive case series study of consecutive RF injuries from November 2017 to July 2022.Setting:Two specialized sports medicine hospitals. Participants: Professional male soccer players aged between 18 and 40 years, referred for injury assessment within 7 days after a RF injury, with an available video footage of the injury and a positive finding on an MRI. Independent Variables: Rectus femoris injury mechanisms (specific scoring based on standardized models) in relation to RF muscle injury MRI findings. Main Outcome Measures: Rectus femoris injury mechanism (playing situation, player/opponent behavior, movement, and biomechanics), location of injury in MRI. Results: Twenty videos of RF injuries in 19 professional male soccer players were analyzed. Three different injury mechanisms were seen: kicking (80%), sprinting (10%), and change of direction (10%). Isolated single-tendon injuries were found in 60% of the injuries. Of the kicking injuries, 62.5% included complete tendon ruptures, whereas both running injuries and none of the change of direction injuries were complete ruptures. The direct tendon was involved in 33% of the isolated injuries, and the common tendon was affected in all combined injuries. Conclusions: Rectus femoris injuries typically occur during kicking among football players. Most of the RF injuries involve a complete rupture of at least one tendon. Kicking injuries can also affect the supporting leg, and sprinting can cause a complete tendon rupture, whereas change of direction seems not to lead to complete ruptures. © 2023 Authors. All rights reserved.","injury mechanism; magnetic resonance imaging; muscle injuries; rectus femoris; single tendon; video analysis","Athletic Injuries; Humans; Infant, Newborn; Magnetic Resonance Imaging; Male; Quadriceps Muscle; Rupture; Soccer; Tendon Injuries; adult; Article; biomechanics; football player; human; independent variable; male; muscle injury; nuclear magnetic resonance imaging; outcome assessment; rectus femoris muscle; running; soccer player; sports medicine; tendon injury; tendon rupture; videorecording; complication; diagnostic imaging; newborn; nuclear magnetic resonance imaging; quadriceps femoris muscle; rupture; soccer; sport injury","Brophy R.H., Wright R.W., Powell J.W., Et al., Injuries to kickers in American football: The National football league experience, Am J Sports Med, 38, pp. 1166-1173, (2010); Orchard J., Seward H., Epidemiology of injuries in the Australian football league, seasons 1997-2000, Br J Sports Med, 36, pp. 39-44, (2002); Eckard T.G., Kerr Z.Y., Padua D.A., Et al., Epidemiology of quadriceps strains in National collegiate athletic association athletes, 2009-2010 through 2014-2015, J Athletic Train, 52, pp. 474-481, (2017); 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Bahr R., Krosshaug T., Understanding injury mechanisms: A key component of preventing injuries in sport, Br J Sports Med, 39, pp. 324-329, (2005); Krosshaug T., Andersen T.E., Olsen O.-E., Et al., Research approaches to describe the mechanisms of injuries in sport: Limitations and possibilities, Br J Sports Med, 39, pp. 330-339, (2005); Klein C., Luig P., Henke T., Et al., Nine typical injury patterns in German professional male football (soccer): A systematic visual video analysis of 345 match injuries, Br J Sports Med, 55, pp. 390-396, (2020); Andersen T.E., Tenga A., Engebretsen L., Et al., Video analysis of injuries and incidents in Norwegian professional football, Br J Sports Med, 38, pp. 626-631, (2004); Della Villa F., Buckthorpe M., Grassi A., Et al., Systematic video analysis of ACL injuries in professional male football (soccer): Injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, Br J Sports Med, 54, pp. 1423-1432, (2020); Serner A., Mosler A.B., Tol J.L., Et al., Mechanisms of acute adductor longus injuries in male football players: A systematic visual video analysis, Br J Sports Med, 53, pp. 158-164, (2019); Isern-Kebschull J., Mecho S., Pruna R., Et al., Sports-related lower limb muscle injuries: Pattern recognition approach and MRI review, Insights into Imaging, 11, (2020); Flores D.V., Mejia Gomez C., Estrada-Castrillon M., Et al., MR imaging of muscle trauma: Anatomy, biomechanics, pathophysiology, and imaging appearance, Radiographics, 38, pp. 124-148, (2018); Guermazi A., Roemer F.W., Robinson P., Et al., Imaging of muscle injuries in sports medicine: Sports imaging series, Radiology, 282, pp. 646-663, (2017); Lee J.C., Mitchell A.W.M., Healy J.C., Imaging of muscle injury in the elite athlete, Br J Radiol, 85, pp. 1173-1185, (2012); Valle X., Alentorn-Geli E., Tol J.L., Et al., Muscle injuries in sports: A new evidence-informed and expert consensus-based classification with clinical application, Sports Med, 47, pp. 1241-1253, (2017); Nunome H., Ikegami Y., Kozakai R., Et al., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, J Sports Sci, 24, pp. 529-541, (2006); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med Sci Sports Exerc, 30, pp. 917-927, (1998); Lees A., Nolan L., The biomechanics of soccer: A review, J Sports Sci, 16, pp. 211-234, (1998); Riley P.O., Franz J., Dicharry J., Et al., Changes in hip joint muscle-Tendon lengths with mode of locomotion, Gait & Posture, 31, pp. 279-283, (2010); Hewit J., Cronin J., Button C., Hume P., Understanding deceleration in sport, Strength Conditioning J, 33, pp. 47-52, (2011)","L. Lempainen; Department of Orthopaedic Sports Medicine,FinnOrthopaedics, Hospital Pihlajalinna, Turku, Joukahaisenkatu 9, 20520, Finland; email: lasse.lempainen@utu.fi","","Lippincott Williams and Wilkins","1050642X","","CJSME","36853900","English","Clin. J. Sport Med.","Article","Final","All Open Access; Green Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85169624981" "Olivares-Jabalera J.; Fílter A.; Dos´Santos T.; Ortega-Domínguez J.; Soto Hermoso V.M.; Requena B.","Olivares-Jabalera, Jesús (57219375591); Fílter, Alberto (57211533760); Dos´Santos, Thomas (57966084800); Ortega-Domínguez, José (57734660200); Soto Hermoso, Víctor M. (25960408800); Requena, Bernardo (8268059700)","57219375591; 57211533760; 57966084800; 57734660200; 25960408800; 8268059700","The Safe Landing warm up technique modification programme: An effective anterior cruciate ligament injury mitigation strategy to improve cutting and jump-movement quality in soccer players","2022","Journal of Sports Sciences","40","24","","2784","2794","10","1","10.1080/02640414.2023.2193451","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85152059962&doi=10.1080%2f02640414.2023.2193451&partnerID=40&md5=3f44e91af2386f29190e38c41046bfce","HUMAN Lab, Sport and Health University Research Institute (iMUDS), Granada, Spain; HUMAN Lab, Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain; FSI Sport Research Lab, FSI Lab, Granada, Spain; Centro de Estudios, Desarrollo e Investigación del Fútbol Extremeño (CEDIFEX), Federación Extremeña de Fútbol, Spain; Department of Sport and Exercise Sciences, Musculoskeletal Science and Sports Medicine Research Centre, Manchester Metropolitan University, Manchester, United Kingdom","Olivares-Jabalera J., HUMAN Lab, Sport and Health University Research Institute (iMUDS), Granada, Spain, HUMAN Lab, Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain, FSI Sport Research Lab, FSI Lab, Granada, Spain, Centro de Estudios, Desarrollo e Investigación del Fútbol Extremeño (CEDIFEX), Federación Extremeña de Fútbol, Spain; Fílter A., FSI Sport Research Lab, FSI Lab, Granada, Spain, Department of Sport and Exercise Sciences, Musculoskeletal Science and Sports Medicine Research Centre, Manchester Metropolitan University, Manchester, United Kingdom; Dos´Santos T., FSI Sport Research Lab, FSI Lab, Granada, Spain, Department of Sport and Exercise Sciences, Musculoskeletal Science and Sports Medicine Research Centre, Manchester Metropolitan University, Manchester, United Kingdom; Ortega-Domínguez J., Centro de Estudios, Desarrollo e Investigación del Fútbol Extremeño (CEDIFEX), Federación Extremeña de Fútbol, Spain; Soto Hermoso V.M., HUMAN Lab, Sport and Health University Research Institute (iMUDS), Granada, Spain, HUMAN Lab, Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain; Requena B., HUMAN Lab, Sport and Health University Research Institute (iMUDS), Granada, Spain, HUMAN Lab, Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain, FSI Sport Research Lab, FSI Lab, Granada, Spain","The objective of the study was to evaluate the effectiveness of the Safe Landing (SL), a 6-week technique-modification (TM) programme, on cutting and jump-landing movement quality in football players. In a non-randomized design, 32 male semi-professional football players from two Spanish clubs participated in the study: one served as the control group (CG, n = 11), while the other performed the SL (n = 15). Performance and movement quality of drop vertical jump and 70º change of direction (COD70) were evaluated through 2D video footage pre- and post-intervention. In such tasks, the Landing Error Scoring System for first (LESS1) and second (LESS2) landings, and the Cutting Movement Assessment Score (CMAS) were used for assessing movement quality. Pre-to-post changes and baseline-adjusted ANCOVA were used. Medium-to-large differences between groups at post-test were shown in CMAS, LESS1 and LESS2 (p < 0.082, ղ2 = 0.137–0.272), with small-to-large improvements in SL (p < 0.046, ES=0.546–1.307), and CG remaining unchanged (p > 0.05) pre-to-post. In COD70 performance, large differences were found between groups (p < 0.047, ղ2 = 0.160–0.253), with SL maintaining performance (p > 0.05, ES=0.039–0.420), while CG moderately decreasing performance (p = 0.024, ES=0.753) pre-to-post. The SL is a feasible and effective TM program to improve movement quality and thus potential injury risk in cutting and landing, while not negatively affecting performance. © 2023 Informa UK Limited, trading as Taylor & Francis Group.","ACL injury mechanisms; change of direction; Injury risk reduction; landing","Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Football; Humans; Male; Movement; Soccer; anterior cruciate ligament injury; biomechanics; football; human; injury; male; movement (physiology); soccer","Arundale A.J.H., Silvers-Granelli H.J., Myklebust G., ACL injury prevention: Where have we come from and where are we going?, Journal of Orthopaedic Research, 40, 1, pp. 43-54, (2022); Bates N.A., Ford K.R., Myer G.D., Hewett T.E., Kinetic and kinematic differences between first and second landings of a drop vertical jump task: Implications for injury risk assessments?, Clinical Biomechanics, 28, 4, pp. 459-466, (2013); Baumgartner T.A., Chung H., Measurement in physical education and exercise science confidence limits for intraclass reliability coefficients, 2009, pp. 37-41, (2014); Benjaminse A., Gokeler A., Dowling A.V., Faigenbaum A., Ford K.R., Hewett T.E., Onate J.A., Otten B., Myer G.D., Optimization of the anterior cruciate ligament injury prevention paradigm: Novel feedback techniques to enhance motor learning and reduce injury risk, Journal of Orthopaedic & Sports Physical Therapy, 45, 3, pp. 170-182, (2015); Benjaminse A., Welling W., Otten B., Gokeler A., Novel methods of instruction in ACL injury prevention programs, a systematic review, Physical Therapy in Sport, 16, 2, pp. 176-186, (2015); Bishop C., Read P., Lake J., Chavda S., Turner A., Interlimb asymmetries: Understanding how to calculate differences from bilateral and unilateral tests, Strength & Conditioning Journal, 40, 4, pp. 1-6, (2018); Bosco C., Luhtanen P., Komi P., Simple Method for Measurement of Mechanical Power in Jumping, European Journal of Applied Physiology and Occupational Physiology, 50, 2, pp. 273-282, (1983); Chijimatsu M., Ishida T., Yamanaka M., Taniguchi S., Ueno R., Ikuta R., Samukawa M., Ino T., Kasahara S., Tohyama H., Landing instructions focused on pelvic and trunk lateral tilt decrease the knee abduction moment during a single-leg drop vertical jump, Physical Therapy in Sport, 46, pp. 226-233, (2020); Cohen J., Statistical power analysis for the behavioral sciences, (1988); Della Villa F., Buckthorpe M., Grassi A., Nabiuzzi A., Tosarelli F., Zaffagnini S., Della Villa S., Systematic video analysis of ACL injuries in professional male football (soccer): Injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, British Journal of Sports Medicine, 54, 23, pp. 1-10, (2020); Della Villa F., Hagglund M., Della Villa S., Ekstrand J., Walden M., High rate of second ACL injury following ACL reconstruction in male professional footballers: An updated longitudinal analysis from 118 players in the UEFA Elite Club Injury Study, British Journal of Sports Medicine, 55, 23, pp. 1350-1357, (2021); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Changing sidestep cutting technique reduces knee valgus loading, The American Journal of Sports Medicine, 37, 11, pp. 2194-2200, (2009); Dempsey A.R., Lloyd D.G., Elliott B.C., Steele J.R., Munro B.J., Russo K.A., The effect of technique change on knee loads during sidestep cutting, Medicine & Science in Sports & Exercise, 39, 10, pp. 1765-1773, (2007); Dischiavi S.L., Wright A.A., Heller R.A., Love C.E., Salzman A.J., Harris C.A., Bleakley C.M., Do ACL injury risk reduction exercises reflect common injury mechanisms? A scoping review of injury prevention programs, Sports Health, 20, 4, pp. 1-9, (2021); Donelon T.A., Dos'santos T., Pitchers G., Brown M., Jones P.A., Biomechanical determinants of knee joint loads associated with increased anterior cruciate ligament loading during cutting: A systematic review and technical framework, Sports Medicine - Open, 6, 1, (2020); Dos'santos T., McBurnie A., Comfort P., Jones P.A., The effects of six-weeks change of direction speed and technique modification training on cutting performance and movement quality in male youth soccer players, Sports, 7, 9, (2019); Dos'santos T., McBurnie A., Donelon T., Thomas C., Comfort P., Jones P.A., A qualitative screening tool to identify athletes with ‘high-risk’ movement mechanics during cutting: The cutting movement assessment score (CMAS), Physical Therapy in Sport, 38, pp. 152-161, (2019); Dos'santos T., McBurnie A., Thomas C., Comfort P., Jones P.A., Biomechanical comparison of cutting techniques: a review and practical applications, Strength & Conditioning Journal, 41, 4, pp. 40-54, (2019); Dos'santos T., Thomas C., Comfort P., Jones P.A., The effect of training interventions on change of direction biomechanics associated with increased anterior cruciate ligament loading: a scoping review, Sports Medicine, 49, 12, pp. 1837-1859, (2019); Dos'santos T., Thomas C., Comfort P., Jones P.A., Biomechanical effects of a 6-week change-of-direction technique modification intervention on anterior cruciate ligament injury risk, Journal of Strength and Conditioning Research, 35, 8, pp. 2133-2144, (2021); Dos'santos T., Thomas C., McBurnie A., Comfort P., Jones P.A., Biomechanical determinants of performance and injury risk during cutting: A performance-injury conflict?, Sports Medicine, 51, 9, pp. 1983-1998, (2021); Dos'santos T., Thomas C., McBurnie A., Donelon T., Herrington L., Jones P.A., The Cutting movement assessment score (CMAs) qualitative screening tool: Application to mitigate anterior cruciate ligament injury risk during cutting, Biomechanics, 1, 1, pp. 83-101, (2021); Ekstrand J., Spreco A., Bengtsson H., Bahr R., Injury rates decreased in men’s professional football: An 18-year prospective cohort study of almost 12 000 injuries sustained during 1.8 million hours of play, British Journal of Sports Medicine, 55, table 1, pp. 1084-1092, (2021); Fox A.S., Change-of-direction biomechanics: Is what’s best for anterior cruciate ligament injury prevention also best for performance?, Sports Medicine, 48, 8, pp. 1799-1807, (2018); Gokeler A., Benjaminse A., Della Villa F., Tosarelli F., Verhagen E., Baumeister J., Anterior cruciate ligament injury mechanisms through a neurocognition lens: Implications for injury screening, BMJ Open Sport & Exercise Medicine, 7, 2, pp. 1-4, (2021); Gokeler A., Benjaminse A., Welling W., Alferink M., Eppinga P., Otten B., The effects of attentional focus on jump performance and knee joint kinematics in patients after ACL reconstruction, Physical Therapy in Sport, 16, 2, pp. 114-120, (2015); Hagglund M., Walden M., Magnusson H., Kristenson K., Bengtsson H., Ekstrand J., Injuries affect team performance negatively in professional football: An 11-year follow-up of the UEFA Champions League injury study, British Journal of Sports Medicine, 47, 12, pp. 738-742, (2013); Healy R., Kenny I.C., Harrison A.J., Reactive strength index: A poor indicator of reactive strength?, International Journal of Sports Physiology and Performance, 13, 6, pp. 802-809, (2018); Hedges L.V., For M-A O.I.S., Front Matter, San Diego, (1985); Hopkins W.G., A scale of magnitudes for effect statistics, New View Stat, 502, 411, (2002); Koo T.K., Li M.Y., A guideline of selecting and reporting intraclass correlation coefficients for reliability research, Journal of Chiropractic Medicine, 15, 2, pp. 155-163, (2016); Neilson V., Ward S., Hume P., Lewis G., McDaid A., Effects of augmented feedback on training jump landing tasks for ACL injury prevention: A systematic review and meta-analysis, Physical Therapy in Sport, 39, pp. 126-135, (2019); O'connell N.S., Dai L., Jiang Y., Speiser J.L., Ward R., Wei W., Carroll R., Gebregziabher M., Methods for analysis of pre-post data in clinical research: A comparison of five common methods, Journal of Biometrics & Biostatistics, 8, 1, pp. 1-8, (2017); Oiestad B.E., Holm I., Aune A.K., Gunderson R., Myklebust G., Engebretsen L., Risberg M.A., Knee function and prevalence of knee osteoarthritis after anterior cruciate ligament reconstruction: A prospective study with 10 to 15 years of follow-up, The American Journal of Sports Medicine, 38, 11, pp. 2201-2210, (2010); Olivares-Jabalera J., Filter-Ruger A., Dossantos T., Ortega-Dominguez J., Sanchez-Martinez R.R., Soto H.V., Requena B., Is there association between cutting and jump-landing movement quality in semi-professional football players? Implications for ACL injury risk screening, Physical Therapy in Sport, 56, pp. 15-23, (2022); Olivares-Jabalera J., Filter-Ruger A., Dos'santos T., Afonso J., Della V.F., Morente-Sanchez J., Soto-Hermoso V.M., Requena B., Exercise-based training strategies to reduce the incidence or mitigate the risk factors of anterior cruciate ligament injury in adult football (Soccer) players: A systematic review, International Journal of Environmental Research and Public Health, 18, 24, (2021); Padua D.A., Marshall S.W., Boling M.C., Thigpen C.A., Garrett W.E., Beutler A.I., The Landing Error Scoring System (LESS) is a valid and reliable clinical assessment tool of jump-landing biomechanics: The jump-ACL Study, The American Journal of Sports Medicine, 37, 10, pp. 1996-2002, (2009); Petushek E.J., Sugimoto D., Stoolmiller M., Smith G., Myer G.D., Evidence-based best-practice guidelines for preventing anterior cruciate ligament injuries in young female athletes: a systematic review and meta-analysis, The American Journal of Sports Medicine, 47, 7, pp. 1744-1753, (2019); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer, Sports Medicine, 35, 6, pp. 501-536, (2005); Walden M., Hagglund M., Magnusson H., Ekstrand J., ACL injuries in men’s professional football: A 15-year prospective study on time trends and return-to-play rates reveals only 65% of players still play at the top level 3 years after ACL rupture, British Journal of Sports Medicine, 50, 12, pp. 744-750, (2016); Walden M., Krosshaug T., Bjorneboe J., Andersen T.E., Faul O., Hagglund M., Three distinct mechanisms predominate in noncontact anterior cruciate ligament injuries in male professional football players: A systematic video analysis of 39 cases, British Journal of Sports Medicine, 49, 22, pp. 1452-1460, (2015)","J. Olivares-Jabalera; HUMAN Lab, Sport and Health University Research Institute (iMUDS), Granada, C/Menéndez Pelayo, 32, 18016, Spain; email: jesusyolivares@gmail.com","","Routledge","02640414","","JSSCE","36958805","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85152059962" "Ulman S.; Erdman A.L.; Loewen A.; Worrall H.M.; Tulchin-Francis K.; Jones J.C.; Chung J.S.; Ellis H.B.; Cullum C.M.; Miller S.M.","Ulman, Sophia (57200819126); Erdman, Ashley L. (57190945382); Loewen, Alex (57219627297); Worrall, Hannah M. (57219457423); Tulchin-Francis, Kirsten (57615465300); Jones, Jacob C. (57219893147); Chung, Jane S. (57208576666); Ellis, Henry B. (7201499316); Cullum, C. Munro (7005142314); Miller, Shane M. (57207308223)","57200819126; 57190945382; 57219627297; 57219457423; 57615465300; 57219893147; 57208576666; 7201499316; 7005142314; 57207308223","Improvement in balance from diagnosis to return-to-play initiation following a sport-related concussion: BESS scores vs center-of-pressure measures","2022","Brain Injury","36","8","","921","930","9","1","10.1080/02699052.2022.2109736","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85135884696&doi=10.1080%2f02699052.2022.2109736&partnerID=40&md5=1d9e9fd3c52d5e318775fdcb8df1f99f","Scottish Rite for Children, Division Director of Movement Science Lab, Frisco, TX, United States; University of Texas Southwestern Medical Center, Dallas, TX, United States","Ulman S., Scottish Rite for Children, Division Director of Movement Science Lab, Frisco, TX, United States, University of Texas Southwestern Medical Center, Dallas, TX, United States; Erdman A.L., Scottish Rite for Children, Division Director of Movement Science Lab, Frisco, TX, United States; Loewen A., Scottish Rite for Children, Division Director of Movement Science Lab, Frisco, TX, United States; Worrall H.M., Scottish Rite for Children, Division Director of Movement Science Lab, Frisco, TX, United States; Tulchin-Francis K., Scottish Rite for Children, Division Director of Movement Science Lab, Frisco, TX, United States, University of Texas Southwestern Medical Center, Dallas, TX, United States; Jones J.C., Scottish Rite for Children, Division Director of Movement Science Lab, Frisco, TX, United States, University of Texas Southwestern Medical Center, Dallas, TX, United States; Chung J.S., Scottish Rite for Children, Division Director of Movement Science Lab, Frisco, TX, United States, University of Texas Southwestern Medical Center, Dallas, TX, United States; Ellis H.B., Scottish Rite for Children, Division Director of Movement Science Lab, Frisco, TX, United States, University of Texas Southwestern Medical Center, Dallas, TX, United States; Cullum C.M., University of Texas Southwestern Medical Center, Dallas, TX, United States; Miller S.M., Scottish Rite for Children, Division Director of Movement Science Lab, Frisco, TX, United States, University of Texas Southwestern Medical Center, Dallas, TX, United States","Objective: Accurate assessment of balance recovery throughout treatment of a sport-related concussion is imperative. This study examined differences in balance from diagnosis to return-to-play initiation in adolescent patients post-concussion. Second, this study investigated the extent to which the Balance Error Scoring System (BESS) correlated with center-of-pressure (COP) measures. Methods: Forty participants performed the BESS while standing on a force platform such that COP data were obtained simultaneously. Spatial and velocity COP-based measures were computed for the double-stance conditions. Results: BESS scores and COP-based measures indicated improved balance performance between visits. Specifically, 62.5/65.0% of participants exhibited improved firm/foam BESS final scores, respectively, and 56.4–71.8% exhibited improved COP-based measures. However, once normative ranges were referenced to identify maintained performance, the percentage of participants who substantially improved differed from initial findings (BESS: 2.5/7.5%, COP: 48.7–69.2%). Additionally, positive correlations between balance measures were primarily found at diagnosis (r=0.33–0.53), while only three correlations were maintained at return-to-play initiation (r=0.34–0.39). Conclusions: BESS scores successfully identified poor balance performance at diagnosis when symptoms were most pronounced, but failed to accurately depict performance once balance impairment, indicated by COP-based measures, became less apparent. Further work is needed to implement more advanced balance assessments into clinical environments. © 2022 Taylor & Francis Group, LLC.","Adolescent; balance assessment; recovery; sport-related concussion","Adolescent; Athletic Injuries; Brain Concussion; Humans; Postural Balance; Return to Sport; Sports; adolescent; Article; Balance Error Scoring System; balance impairment; biomechanics; body mass; body position; brain concussion; center of pressure; clinical article; comparative study; controlled study; exercise; female; football; ground reaction force; home care; human; male; musculoskeletal disease assessment; neurorehabilitation; return to sport; scoring system; soccer; sport injury; sports medicine; stabilography; standing; traumatic brain injury; treatment duration; videorecording; body equilibrium; brain concussion; return to sport; sport; sport injury","Lempke L.B., Schmidt J.D., Lynall R.C., Athletic trainers’ concussion-assessment and concussion-management practices: an update, J Athl Train, 55, 1, pp. 17-26, (2020); 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Lin D., Seol H., Nussbaum M.A., Madigan M.L., Reliability of COP-based postural sway measures and age-related differences, Gait Posture, 28, 2, pp. 337-342, (2008); Dorneles P.P., Pranke G.I., Mota C.B., Comparison of postural balance between female and male adolescents, Fisioterapia E Pesquisa, 20, pp. 210-214, (2013); Campolettano E.T., Brolinson G., Rowson S., Postural control and head impact exposure in youth football players: comparison of the balance error scoring system and a force plate protocol, J Appl Biomech, 34, 2, pp. 127-133, (2017); Sember V., Groselj J., Pajek M., Balance tests in pre-adolescent children: retest reliability, construct validity, and relative ability, Int J Environ Res Public Health, 17, 15, (2020); Hrysomallis C., Relationship between balance ability, training and sports injury risk, Sports Med, 37, 6, pp. 547-556, (2007); DaCosta A., Crane A., Webbe F., LoGalbo A., Change in balance performance predicts neurocognitive dysfunction and symptom endorsement in concussed college athletes, Arch Clin Neuropsychol, 35, 7, pp. 1123-1130, (2020); Johnston W., O'Reilly M., Liston M., McLoughlin R., Coughlan G.F., Caulfield B., Capturing concussion related changes in dynamic balance using the Quantified Y Balance Test–a case series of six elite rugby union players, 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), (2019); Halstead M., Walter K., Moffatt K., Council on Sports Medicine and Fitness. Sport-related concussion in children and adolescents, Pediatrics, 142, 6, (2018); Finnoff J.T., Peterson V.J., Hollman J.H., Smith J., Intrarater and interrater reliability of the Balance Error Scoring System (BESS), Pm&r, 1, 1, pp. 50-54, (2009); Khanna N.K., Baumgartner K., LaBella C.R., Balance Error Scoring System performance in children and adolescents with no history of concussion, Sports Health, 7, 4, pp. 341-345, (2015); Buckley T.A., Munkasy B.A., Clouse B.P., Sensitivity and specificity of the modified balance error scoring system in concussed collegiate student athletes, Clin j sport med, 28, 2, pp. 174-176, (2018); Hunt T.N., Ferrara M.S., Bornstein R.A., Baumgartner T.A., The reliability of the modified balance error scoring system, Clin J Sport Med, 19, 6, pp. 471-475, (2009); Zemek R., Barrowman N., Freedman S., Gravel J., Gagnon I., McGahern C., Aglipay M., Sangha G., Boutis K., Beer D., Et al., Pediatric emergency research canada concussion, T clinical risk score for persistent postconcussion symptoms among children with acute concussion in the ED, JAMA, 315, 10, pp. 1014-1025, (2016); Howell D.R., Zemek R., Brilliant A.N., Mannix R.C., Master C.L., Meehan W.P., Identifying persistent postconcussion symptom risk in a pediatric sports medicine clinic, Am J Sports Med, 46, 13, pp. 3254-3261, (2018); Riemann B.L., Guskiewicz K.M., Shields E.W., Relationship between clinical and forceplate measures of postural stability, J Sport Rehabil, 8, 2, pp. 71-82, (1999); Lal A., Kolakowsky-Hayner S.A., Ghajar J., Balamane M., The effect of physical exercise after a concussion: a systematic review and meta-analysis, Am J Sports Med, 46, 3, pp. 743-752, (2018)","S. Ulman; Scottish Rite for Children, Assistant Director of Movement Science Lab, Frisco, 5700 Dallas Parkway, 75034, United States; email: sophia.ulman@tsrh.org","","Taylor and Francis Ltd.","02699052","","BRAIE","35957571","English","Brain Inj.","Article","Final","","Scopus","2-s2.0-85135884696" "Sugi S.; Nunome H.; Tamura Y.; Iga T.; Lake M.","Sugi, Shusei (57211945332); Nunome, Hiroyuki (6507093692); Tamura, Yuji (57211941519); Iga, Takahito (55707999300); Lake, Mark (57213492724)","57211945332; 6507093692; 57211941519; 55707999300; 57213492724","Contribution of lower body segment rotations in various height soccer volley kicking","2022","Sports Biomechanics","21","6","","669","684","15","1","10.1080/14763141.2019.1667422","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85075415369&doi=10.1080%2f14763141.2019.1667422&partnerID=40&md5=f4393eee82058001e67c6e3981fb2265","Graduate School of Sports and Health Science, Fukuoka University, Fukuoka, Japan; Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan; School of Sports and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom","Sugi S., Graduate School of Sports and Health Science, Fukuoka University, Fukuoka, Japan; Nunome H., Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan; Tamura Y., Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan; Iga T., Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan; Lake M., School of Sports and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom","We aimed to quantify the contribution of lower body segment rotations in producing foot velocity during the soccer volley kick. Fifteen male experienced university players kicked a soccer ball placed at four height conditions (0, 25, 50 and 75 cm). Their kicking motion was captured at 500 Hz. The effectiveness of lower body segment rotations in producing forward (Ffv) and upward (Fuv) foot velocity were computed and time integrated. Major contributors for Ffv were a) left hip linear velocity, b) knee extension and c) pelvis retroflexion (the pitch rotation). The contribution of a) become smaller as the ball height increased while those of b) and c) did not change significantly. Moreover, the pelvis clockwise rotation (the yaw rotation) showed apparent contribution only for volley kicking (except 0 cm height). Major contributors for Fuv were 1) knee flexion, 2) hip internal rotation, 3) pelvis clockwise rotation (the roll rotation) and 4) hip flexion. The contributions of 1) and 4) become consistently smaller as the ball height increased, while those of 2) and 3) become larger systematically. Soccer volley kicking was found to have unique adaptations of segmental contributions to achieve higher foot position while maintain foot forward velocity. © 2019 Informa UK Limited, trading as Taylor & Francis Group.","coaching cues; foot centre of mass velocity; joint angular motion; kicking leg; Word","Biomechanical Phenomena; Hip; Humans; Knee; Lower Extremity; Male; Soccer; adult; article; foot; hip; human; knee function; male; pelvis; pitch; rotation; soccer; biomechanics; hip; knee; lower limb","Ae M., Tang H., Yokoi T., Estimation of inertial properties on the body segments in Japanese athletes, Biomechanisms 11: Form, motion, and function in humans, pp. 23-33, (1992); Davis R., Ounpuu S., Tyburski D., Gage J., A gait analysis data collection and reduction technique, Human Movement Science, 10, pp. 575-587, (1991); Inoue K., Nunome H., Sterzing T., Shinkai H., Ikegami Y., Dynamics of the support leg in soccer instep kicking, Journal of Sports Sciences, 32, pp. 1023-1032, (2014); Ishihara T., Nunome H., Yamamoto H., Three dimensional kinematics of soccer instep kicking - How players change the motion to different height of balls- [in Japanese], Medicine and Science in Soccer, 20, pp. 57-60, (2000); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, pp. 805-817, (2010); Levanon J., Dapena J., Comparison of the kinematics of the full instep kick and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, pp. 917-927, (1998); Miyanishi T., Fujii N., Ae M., Kunugi Y., Okada M., A three-dimensional study on contribution of torso and throwing arm segments to ball velocity in baseball throwing motion, Journal of Physical Education, 41, pp. 23-37, (1996); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine & Science in Sports & Exercise, 34, pp. 2028-2036, (2002); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, Journal of Sports Sciences, 24, pp. 11-22, (2006); Rodano R., Tavana R., Three-dimensional analysis of instep kick in professional soccer players, Science & football II, pp. 441-448, (1993); Shinkai H., Isokawa M., Analysis of soccer volley kicking - How players change the motion to different height of balls - [in Japanese], Journal of Fitness & Sports Medicine, 53, (2004); Shinkai H., Nunome H., Isokawa M., Ikegami Y., Ball impact dynamics of instep soccer kicking, Medicine & Science in Sports & Exercise, 41, pp. 889-897, (2009); Sprigings E., Marshall R., Elliot B., Jennings L., A three-dimensional kinematic method for determining the effective of arm segment rotations in producing racquet-head speed, Journal of Biomechanics, 27, pp. 245-254, (1994); Sugi S., Nunome H., Tamura Y., Iga T., Kinematics of low, middle and high volley kicking in soccer, Proceedings of 34th International Conference on Biomechanics in Sports, pp. 1008-1011, (2016); Suito H., Ikegami Y., Nunome H., Sano S., Shinkai H., Tujimoto N., The effect of fatigue on the underwater arm stroke motion in the 100-m front crawl, Journal of Applied Biomechanics, 24, pp. 316-324, (2008)","S. Sugi; Graduate School of Sports and Health Science, Fukuoka University, Fukuoka, Japan; email: gd160502@cis.fukuoka-u.ac.jp","","Routledge","14763141","","","31762385","English","Sports Biomech.","Article","Final","","Scopus","2-s2.0-85075415369" "Schulc A.; Leite C.B.G.; Csákvári M.; Lattermann L.; Zgoda M.F.; Farina E.M.; Lattermann C.; Tősér Z.; Merkely G.","Schulc, Attila (57210358704); Leite, Chilan B.G. (57197866071); Csákvári, Máté (57197709542); Lattermann, Luke (58945361100); Zgoda, Molly F. (57221774614); Farina, Evan M. (56892862300); Lattermann, Christian (8604768700); Tősér, Zoltán (56298422000); Merkely, Gergo (56304026800)","57210358704; 57197866071; 57197709542; 58945361100; 57221774614; 56892862300; 8604768700; 56298422000; 56304026800","Identifying Anterior Cruciate Ligament Injuries Through Automated Video Analysis of In-Game Motion Patterns","2024","Orthopaedic Journal of Sports Medicine","12","3","","","","","0","10.1177/23259671231221579","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85188141195&doi=10.1177%2f23259671231221579&partnerID=40&md5=1d6c9f5a694a19dcdc4f490e096bcd86","Argus Cognitive Hungary Kft, Budapest, Hungary; Department of Orthopaedic Surgery, Division of Sports Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States; Instituto de Ortopedia e Traumatologia, Hospital das Clinicas, HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, São Paulo, Brazil; Argus Cognitive, Inc, Lebanon, NH, United States","Schulc A., Argus Cognitive Hungary Kft, Budapest, Hungary; Leite C.B.G., Department of Orthopaedic Surgery, Division of Sports Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States, Instituto de Ortopedia e Traumatologia, Hospital das Clinicas, HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, São Paulo, Brazil; Csákvári M., Argus Cognitive Hungary Kft, Budapest, Hungary; Lattermann L., Department of Orthopaedic Surgery, Division of Sports Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States; Zgoda M.F., Department of Orthopaedic Surgery, Division of Sports Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States; Farina E.M., Department of Orthopaedic Surgery, Division of Sports Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States; Lattermann C., Department of Orthopaedic Surgery, Division of Sports Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States; Tősér Z., Argus Cognitive, Inc, Lebanon, NH, United States; Merkely G., Department of Orthopaedic Surgery, Division of Sports Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States","Background: Failure to diagnose anterior cruciate ligament (ACL) injury during a game can delay adequate treatment and increase the risk of further injuries. Artificial intelligence (AI) has the potential to be an accurate, cost-efficient, and readily available diagnostic tool for ACL injury in in-game situations. Purpose: To develop an automated video analysis system that uses AI to identify biomechanical patterns associated with ACL injury and to evaluate whether the system can enhance the ability of orthopaedic and sports medicine specialists to identify ACL injuries on video. Study Design: Descriptive laboratory study. Methods: A total of 91 ACL injury and 38 control movement scenes from online available match recordings were analyzed. The videos were processed to identify and track athletes and to estimate their 3-dimensional (3D) poses. Geometric features, including knee flexion, knee and hip abduction, and foot and hip rotation, were extracted from the athletes’ 3D poses. A recurrent neural network algorithm was trained to classify ACL injury, using these engineered features as its input. Analysis by 2 orthopaedic surgeons examined whether providing clinical experts with the reconstructed 3D poses and their derived signals could increase their diagnostic accuracy. Results: All AI models performed significantly better than chance. The best model, which used the long short-term memory network with engineered features, demonstrated decision interpretability and good performance (F1 score = 0.63 ± 0.01, area under the receiver operating characteristic curve = 0.88 ± 0.01). The analysis by the 2 orthopaedic surgeons demonstrated improved diagnostic accuracy for ACL injury recognition when provided with system data, resulting in a 0.08 increase in combined F1 scores. Conclusion: Our approach successfully reconstructed the 3D motion of athletes from a single-camera view and derived geometry-based biomechanical features from pose sequences. Our trained AI model was able to automatically detect ACL injuries with relatively good performance and prelabel and highlight regions of interest in video footage. Clinical Relevance: This study demonstrated the feasibility of using AI to automatically evaluate in-game video footage and identify dangerous motion patterns. Further research can explore the full potential of the biomechanical markers and use of the system by nonspecialists, potentially diminishing the rate of missed diagnosis and the detrimental outcomes that follow. © The Author(s) 2024.","anterior cruciate ligament injury; artificial intelligence; biomechanics; motion analysis; video analysis","anterior cruciate ligament injury; Article; artificial intelligence; artificial neural network; athlete; basketball; biomechanics; controlled study; diagnostic accuracy; diagnostic test accuracy study; female; follow up; football; game; human; kinematics; knee function; long short term memory network; major clinical study; male; motion; orthopedic surgeon; receiver operating characteristic; rotation; rugby; soccer; sports medicine; tennis; training; volleyball","Allott N.E., Banger M.S., McGregor A.H., Evaluating the diagnostic pathway for acute ACL injuries in trauma centres: a systematic review, BMC Musculoskelet Disord, 23, 1, (2022); Anstey D.E., Heyworth B.E., Price M.D., Gill T.J., Effect of timing of ACL reconstruction in surgery and development of meniscal and chondral lesions, Phys Sportsmed, 40, 1, pp. 36-40, (2012); Arastu M., Grange S., Twyman R., Prevalence and consequences of delayed diagnosis of anterior cruciate ligament ruptures, Knee Surg Sports Traumatol Arthrosc, 23, 4, pp. 1201-1205, (2015); Ardern C.L., Webster K.E., Taylor N.F., Feller J.A., Return to the preinjury level of competitive sport after anterior cruciate ligament reconstruction surgery: two-thirds of patients have not returned by 12 months after surgery, Am J Sports Med, 39, 3, pp. 538-543, (2011); Boden B.P., Sheehan F.T., Torg J.S., Hewett T.E., Non-contact ACL injuries: mechanisms and risk factors, J Am Acad Orthop Surg, 18, 9, pp. 520-527, (2010); Borjali A., Chen A.F., Muratoglu O.K., Morid M.A., Varadarajan K.M., Deep learning in orthopedics: how do we build trust in the machine?, Healthc Transform; Brady M.P., Weiss W., Clinical diagnostic tests versus MRI diagnosis of ACL tears, J Sport Rehabil, 27, 6, pp. 596-600, (2018); Costa G.G., Perelli S., Grassi A., Russo A., Zaffagnini S., Monllau J.C., Minimizing the risk of graft failure after anterior cruciate ligament reconstruction in athletes. A narrative review of the current evidence, J Exp Orthop, 9, 1, (2022); Della Villa F., Buckthorpe M., Grassi A., Et al., Systematic video analysis of ACL injuries in professional male football (soccer): injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, Br J Sports Med, 54, 23, pp. 1423-1432, (2020); Ekegren C.L., Miller W.C., Celebrini R.G., Eng J.J., Macintyre D.L., Reliability and validity of observational risk screening in evaluating dynamic knee valgus, J Orthop Sports Phys Ther, 39, 9, pp. 665-674, (2009); Gordon B., Raab S., Azov G., Giryes R., Cohen-Or D., FLEX: extrinsic parameters-free multi-view 3D human motion reconstruction, European Conference on Computer Vision (ECCV), Vol 13693, pp. 176-196, (2022); Heard W.M.R., VanSice W.C., Savoie F.H., Anterior cruciate ligament tears for the primary care sports physician: what to know on the field and in the office, Phys Sportsmed, 43, 4, pp. 432-439, (2015); Hewett T.E., Bates N.A., Preventive biomechanics: a paradigm shift with a translational approach to injury prevention, Am J Sports Med, 45, 11, pp. 2654-2664, (2017); Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Kristianslund E., Faul O., Bahr R., Myklebust G., Krosshaug T., Sidestep cutting technique and knee abduction loading: implications for ACL prevention exercises, Br J Sports Med, 48, 9, pp. 779-783, (2014); Krosshaug T., Nakamae A., Boden B.P., Et al., Mechanisms of anterior cruciate ligament injury in basketball: video analysis of 39 cases, Am J Sports Med, 35, 3, pp. 359-367, (2007); Kurmis A.P., Ianunzio J.R., Artificial intelligence in orthopedic surgery: evolution, current state and future directions, Arthroplasty, 4, 1, (2022); Li C., Wang P., Wang S., Hou Y., Li W., Skeleton-based action recognition using LSTM and CNN, pp. 585-590, (2017); Lucarno S., Zago M., Buckthorpe M., Et al., Systematic video analysis of anterior cruciate ligament injuries in professional female soccer players, Am J Sports Med, 49, 7, pp. 1794-1802, (2021); Merkely G., Borjali A., Zgoda M., Et al., Improved diagnosis of tibiofemoral cartilage defects on MRI images using deep learning, J Cartilage Joint Preserv, 1, 2, (2021); Moro M., Marchesi G., Hesse F., Odone F., Casadio M., Markerless V., marker-based gait analysis: a proof of concept study, Sensors, 22, 5, (2022); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Development and validation of a clinic-based prediction tool to identify female athletes at high risk for anterior cruciate ligament injury, Am J Sports Med, 38, 10, pp. 2025-2033, (2010); Nakano N., Sakura T., Ueda K., Et al., Evaluation of 3D markerless motion capture accuracy using OpenPose with multiple video cameras, Front Sports Act Living, 2, (2020); Paterno M.V., Rauh M.J., Schmitt L.C., Ford K.R., Hewett T.E., Incidence of second ACL injuries 2 years after primary ACL reconstruction and return to sport, Am J Sports Med, 42, 7, pp. 1567-1573, (2014); Ramkumar P.N., Kunze K.N., Haeberle H.S., Et al., Clinical and research medical applications of artificial intelligence, Arthroscopy, 37, 5, pp. 1694-1697, (2021); Ramkumar P.N., Luu B.C., Haeberle H.S., Karnuta J.M., Nwachukwu B.U., Williams R.J., Sports medicine and artificial intelligence: a primer, Am J Sports Med, 50, 4, pp. 1166-1174, (2022); Redmon J., Farhadi A., YOLOv3: an incremental improvement, ArXiv; Sarandi I., Linder T., Arras K.O., Leibe B., MeTRAbs: metric-scale truncation-robust heatmaps for absolute 3D human pose estimation, IEEE Trans Biometrics Behav Identity Sci, 3, 1, pp. 16-30, (2021); Shuai H., Wu L., Liu Q., Adaptive multi-view and temporal fusing transformer for 3D human pose estimation, IEEE Trans Pattern Anal Machine Intelligence, 45, 4, pp. 4122-4135, (2022); Sommerfeldt M., Raheem A., Whittaker J., Hui C., Otto D., Recurrent instability episodes and meniscal or cartilage damage after anterior cruciate ligament injury: a systematic review, Orthop J Sports Med, 6, 7, (2018); Stensrud S., Myklebust G., Kristianslund E., Bahr R., Krosshaug T., Correlation between two-dimensional video analysis and subjective assessment in evaluating knee control among elite female team handball players, Br J Sports Med, 45, 7, pp. 589-595, (2011); Stone A.V., Marx S., Conley C.W., Management of partial tears of the anterior cruciate ligament: a review of the anatomy, diagnosis, and treatment, J Am Acad Orthop Surg, 29, 2, pp. 60-70, (2021); Veges M., Lorincz A., Temporal smoothing for 3D human pose estimation and localization for occluded people, pp. 557-568, (2020); Webster K.E., Feller J.A., Leigh W.B., Richmond A.K., Younger patients are at increased risk for graft rupture and contralateral injury after anterior cruciate ligament reconstruction, Am J Sports Med, 42, 3, pp. 641-647, (2014); Yu W., Xianmin L., Liangbi X., Chunbao L., Risk factors of young males with physically demanding occupations having accumulated damage of anterior cruciate ligament, Orthop Surg, 14, 6, pp. 1109-1114, (2022); Zhang S., Liu X., Xiao J., On geometric features for skeleton-based action recognition using multilayer LSTM networks, pp. 148-157, (2017); Zhang Y., Sun P., Jiang Y., Et al., Bytetrack: multi-object tracking by associating every detection box, pp. 1-21, (2022); Zhao M., Zhou Y., Chang J., Et al., The accuracy of MRI in the diagnosis of anterior cruciate ligament injury, Ann Transl Med, 8, 24, (2020)","G. Merkely; Department of Orthopaedic Surgery, Division of Sports Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, United States; email: gmerkely@bwh.harvard.edu","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85188141195" "Robbins S.M.; Lima Y.L.; Brown H.; Morelli M.; Pearsall D.J.; Bühler M.; Lamontagne A.","Robbins, Shawn M. (19934389400); Lima, Yuri Lopes (57221111421); Brown, Harry (57677631600); Morelli, Moreno (7103166471); Pearsall, David J. (7003649347); Bühler, Marco (57197733306); Lamontagne, Anouk (7005939483)","19934389400; 57221111421; 57677631600; 7103166471; 7003649347; 57197733306; 7005939483","The Association of Age and Sex With Joint Angles and Coordination During Unanticipated Cutting in Soccer Players","2023","Motor Control","27","4","","800","817","17","1","10.1123/mc.2022-0130","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85172813938&doi=10.1123%2fmc.2022-0130&partnerID=40&md5=18bb5d1b9e8b9a4d1b61972913360d7a","Center for Interdisciplinary Research in Rehabilitation, Lethbridge-Layton-MacKay Rehabilitation Center, the School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada; Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Australia; Department of Kinesiology and Physical Education, McGill Research Center for Physical Activity and Health, McGill University, Montreal, QC, Canada; Division of Orthopaedic Surgery, Department of Surgery, Faculty of Medicine, St. Mary’s Hospital, McGill University, Montreal, QC, Canada; Center for Interdisciplinary Research in Rehabilitation, Feil & Oberfeld Research Center, Jewish Rehabilitation Hospital, Laval, QC, Canada; School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada","Robbins S.M., Center for Interdisciplinary Research in Rehabilitation, Lethbridge-Layton-MacKay Rehabilitation Center, the School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada; Lima Y.L., Center for Interdisciplinary Research in Rehabilitation, Lethbridge-Layton-MacKay Rehabilitation Center, the School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada, Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Australia; Brown H., Department of Kinesiology and Physical Education, McGill Research Center for Physical Activity and Health, McGill University, Montreal, QC, Canada; Morelli M., Division of Orthopaedic Surgery, Department of Surgery, Faculty of Medicine, St. Mary’s Hospital, McGill University, Montreal, QC, Canada; Pearsall D.J., Department of Kinesiology and Physical Education, McGill Research Center for Physical Activity and Health, McGill University, Montreal, QC, Canada; Bühler M., Center for Interdisciplinary Research in Rehabilitation, Feil & Oberfeld Research Center, Jewish Rehabilitation Hospital, Laval, QC, Canada, School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada; Lamontagne A., Center for Interdisciplinary Research in Rehabilitation, Feil & Oberfeld Research Center, Jewish Rehabilitation Hospital, Laval, QC, Canada, School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada","Deficits in movement patterns during cutting while running might place soccer players at risk of injury. The objective was to compare joint angles and intersegment coordination between sexes and ages during an unanticipated side-step cutting task in soccer players. This cross-sectional study recruited 11 male (four adolescents and seven adults) and 10 female (six adolescents and four adults) soccer players. Three-dimensional motion capture was used to measure lower-extremity joint and segment angles as participants performed an unanticipated cutting task. Hierarchical linear models examined relationships between joint angle characteristics with age and sex. Continuous relative phase was used to quantify intersegment coordination amplitude and variability. These values were compared between age and sex groups using analysis of covariance. Adult males had greater hip flexion angle excursions than adolescent males, while adult females had smaller excursions than adolescent females (p = .011). Females had smaller changes in hip flexion angles (p = .045), greater hip adduction angles (p = .043), and greater ankle eversion angles (p = .009) than males. Adolescents had greater hip internal rotation (p = .044) and knee flexion (p = .033) angles than adults, but smaller changes in knee flexion angles at precontact compared with stance/foot off (p < .001). For intersegment coordination, females were more out-of-phase than males in the foot/shank segment in the sagittal plane. There were no differences in intersegment coordination variability between groups. Differences in joint motion during an unanticipated cutting task were present between age groups and sexes. Injury prevention programs or training programs may be able target specific deficits to lower injury risk and improve performance. © 2023 Human Kinetics, Inc.","adolescent; biomechanics; continuous relative phase; kinematics; motion analysis","Adolescent; Adult; Biomechanical Phenomena; Cross-Sectional Studies; Female; Humans; Knee Joint; Lower Extremity; Male; Range of Motion, Articular; Soccer; accident prevention; adduction; adolescent; adult; age; analysis of covariance; ankle; article; biomechanics; clinical article; controlled study; cross-sectional study; female; foot; groups by age; hip flexion angle; human; joint function; kinematics; knee flexion angle; lower limb; male; motion capture; rotation; soccer player; standing; training; biomechanics; knee; range of motion; soccer","Agel J., Rockwood T., Klossner D., Collegiate ACL injury rates across 15 sports: National collegiate athletic association injury surveillance system data update (2004–2005 through 2012–2013), Clinical Journal of Sport Medicine, 26, 6, pp. 518-523, (2016); 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International society of biomechanics, Journal of Biomechanics, 35, 4, pp. 543-548, (2002)","S.M. Robbins; Center for Interdisciplinary Research in Rehabilitation, Lethbridge-Layton-MacKay Rehabilitation Center, the School of Physical and Occupational Therapy, McGill University, Montreal, Canada; email: shawn.robbins@mcgill.ca","","Human Kinetics Publishers Inc.","10871640","","","37290769","English","Mot. Control","Article","Final","","Scopus","2-s2.0-85172813938" "Aparicio-Sarmiento A.; Hernández-García R.; Cejudo A.; Palao J.M.; de Baranda P.S.","Aparicio-Sarmiento, Alba (57211351528); Hernández-García, Raquel (35093901300); Cejudo, Antonio (55365928900); Palao, José Manuel (13004065900); de Baranda, Pilar Sainz (24170811900)","57211351528; 35093901300; 55365928900; 13004065900; 24170811900","Reliability of a Qualitative Instrument to Assess High-Risk Mechanisms during a 90◦ Change of Direction in Female Football Players","2022","International Journal of Environmental Research and Public Health","19","7","4143","","","","1","10.3390/ijerph19074143","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127136860&doi=10.3390%2fijerph19074143&partnerID=40&md5=9c5685fa313ed2d2b04e5ab25344c2f9","Research Group “Raquis Aparato Locomotor y Deporte”, Department of Physical Activity and Sport, Faculty of Sport Sciences, Campus de Excelencia Internacional Mare Nostrum, University of Murcia, Murcia, 30720, Spain; Scientific Association of Research Groups “Sport Performance Analysis Association”, Murcia, 30720, Spain; Department of Health, Exercise Science & Sport Management, University of Wisconsin-Parkside, Kenosha, 53144, WI, United States","Aparicio-Sarmiento A., Research Group “Raquis Aparato Locomotor y Deporte”, Department of Physical Activity and Sport, Faculty of Sport Sciences, Campus de Excelencia Internacional Mare Nostrum, University of Murcia, Murcia, 30720, Spain; Hernández-García R., Research Group “Raquis Aparato Locomotor y Deporte”, Department of Physical Activity and Sport, Faculty of Sport Sciences, Campus de Excelencia Internacional Mare Nostrum, University of Murcia, Murcia, 30720, Spain; Cejudo A., Research Group “Raquis Aparato Locomotor y Deporte”, Department of Physical Activity and Sport, Faculty of Sport Sciences, Campus de Excelencia Internacional Mare Nostrum, University of Murcia, Murcia, 30720, Spain; Palao J.M., Scientific Association of Research Groups “Sport Performance Analysis Association”, Murcia, 30720, Spain, Department of Health, Exercise Science & Sport Management, University of Wisconsin-Parkside, Kenosha, 53144, WI, United States; de Baranda P.S., Research Group “Raquis Aparato Locomotor y Deporte”, Department of Physical Activity and Sport, Faculty of Sport Sciences, Campus de Excelencia Internacional Mare Nostrum, University of Murcia, Murcia, 30720, Spain","Sidestep cuts between 60◦ and 180◦ and one-leg landings have been identified as the main mechanisms of ACL injuries in several sports. This study sought to determine intra-and interrater reliability of a qualitative tool to assess high-risk movements in a 90◦ change of direction when the test is applied in a real framework of sport practice. Female footballers from two teams (n = 38) participated in this study and were asked to perform 90◦ cutting trials to each side, which were simultaneously filmed from a frontal and a sagittal view. A total of 61 cases were selected for 2D qualitative observational analysis by three raters. Poor reliability was found among each pair of raters as well as moderate reliability when the Cutting Movement Assessment Score (CMAS) was given by the same rater at different moments, but with too high a minimum detectable change. On the other hand, raters presented a significant, as well as moderate-to-good intrarater reliability for most items of the CMAS tool. There was, however, non-significant reliability between observers in rating most check-points of the tool. For these reasons, more objective guidelines and clearer definitions for each criterion within the CMAS, as well as a longer, standardised training period for novel observers, would be highly recommended to improve the reliability of this tool in an applied context with female footballers. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.","cutting task; injury risk; knee load; ligament injuries; movement quality; sidestep; soccer","Anterior Cruciate Ligament Injuries; Female; Football; Humans; Knee Joint; Reproducibility of Results; Soccer; female; injury; risk assessment; sport; adolescent; adult; anterior cruciate ligament; Article; biomechanics; chemical oxygen demand; clinical article; controlled study; Cutting Movement Assessment Score; female; football player; high risk movement; human; interrater reliability; intrarater reliability; knee function; knee ligament; limb movement; loading test; movement time; observational study; qualitative analysis; range of motion; reproducibility; scoring system; two-dimensional imaging; young adult; anterior cruciate ligament injury; football; injury; knee; soccer","Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in fa premier league soccer, J. Sports Sci. 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Ther, 14, pp. 424-435, (2019); Carlson V.R., Sheehan F.T., Boden B.P., Video analysis of anterior cruciate ligament (ACL) injuries: A systematic review, JBJS Rev, 4, (2016); Altman A.R., Davis I.S., A kinematic method for footstrike pattern detection in barefoot and shod runners, Gait Posture, 35, pp. 298-300, (2012); Dos'Santos T., Thomas C., McBurnie A., Donelon T., Herrington L., Jones P.A., The cutting movement assessment score (CMAS) qualitative screening tool: Application to mitigate anterior cruciate ligament injury risk during cutting, Biomechanics, 1, pp. 83-101, (2021); Roldan A., Sarabia J.M., Gomez-Marcos G., Reina R., An observational tool to assess activity limitation in ambulatory people with cerebral palsy when performing motor skills, Int. J. Environ. Res. Public Health, 17, (2020); Jara D., Gomez-Ruano M.A., Ortega E., Sainz de Baranda P., Design, validation, and reliability of an observational instrument for the defensive and offensive technical-tactical actions of the goalkeeper, Kinesiology, 52, pp. 250-257, (2020); Torres-Luque G., Fernandez-Garcia A.I., Cabello-Manrique D., Gimenez-Egido J.M., Ortega-Toro E., Design and validation of an observational instrument for the technical-tactical actions in singles tennis, Front. Psychol, 9, (2018); McBurnie A.J., Dos'Santos T., Jones P.A., Biomechanical associates of performance and knee joint loads during a 70–90 cutting maneuver in subelite soccer players, J. Strength Cond. Res, 35, pp. 3190-3198, (2021); Almangoush A., A preliminary reliability study of a qualitative scoring system of limb alignment during single leg squat, Int. J. Phys. Med. Rehabil, 1, (2014); Teyhen D.S., Shaffer S.W., Lorenson C.L., Halfpap J.P., Donofry D.F., Walker M.J., Dugan J.L., Childs J.D., The functional movement screen: A reliability study, J. Orthop. Sports Phys. Ther, 42, pp. 530-540, (2012); Torres-Luque G., Blanca-Torres J.C., Gimenez-Egido J.M., Cabello-Manrique D., Ortega-Toro E., Design, validation, and reliability of an observational instrument for technical and tactical actions in singles badminton, Front. Psychol, 11, (2020); McLean S.G., Neal R.J., Myers P.T., Walters M.R., Knee joint kinematics during the sidestep cutting maneuver: Potential for injury in women, Med. Sci. Sports Exerc, 31, pp. 959-968, (1999); Pollard C.D., Stearns K.M., Hayes A.T., Heiderscheit B.C., Altered lower extremity movement variability in female soccer players during side-step cutting after anterior cruciate ligament reconstruction, Am. J. Sports Med, 43, pp. 460-465, (2015); Hopkins W.G., Measures of reliability in sports medicine and science, Sports Med, 30, pp. 1-15, (2000)","A. Aparicio-Sarmiento; Research Group “Raquis Aparato Locomotor y Deporte”, Department of Physical Activity and Sport, Faculty of Sport Sciences, Campus de Excelencia Internacional Mare Nostrum, University of Murcia, Murcia, 30720, Spain; email: alba.aparicio@um.es; A. Cejudo; Research Group “Raquis Aparato Locomotor y Deporte”, Department of Physical Activity and Sport, Faculty of Sport Sciences, Campus de Excelencia Internacional Mare Nostrum, University of Murcia, Murcia, 30720, Spain; email: antonio.cejudo@um.es","","MDPI","16617827","","","35409830","English","Int. J. Environ. Res. Public Health","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85127136860" "Ma B.; Zhang T.-T.; Jia Y.-D.; Wang H.; Zhu X.-Y.; Zhang W.-J.; Li X.-M.; Liu H.-B.; Xie D.","Ma, B. (57221648464); Zhang, T.-T. (57406618500); Jia, Y.-D. (57406787500); Wang, H. (57221645117); Zhu, X.-Y. (57949758600); Zhang, W.-J. (57949758700); Li, X.-M. (57221645177); Liu, H.-B. (57195054758); Xie, D. (51462238500)","57221648464; 57406618500; 57406787500; 57221645117; 57949758600; 57949758700; 57221645177; 57195054758; 51462238500","Characteristics of vertical drop jump to screen the anterior cruciate ligament injury","2022","European Review for Medical and Pharmacological Sciences","26","20","","7395","7403","8","1","10.26355/eurrev_202210_30008","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85141004757&doi=10.26355%2feurrev_202210_30008&partnerID=40&md5=a17c600e3f04f18b1b680e006f51385d","School of Sports Medicine and Rehabilitation, Shandong First Medical University, Shandong Academy of Medical Sciences, Shandong Province, Taian City, China; Department of Rehabilitation, Liaocheng People's Hospital, Shandong Province, Liaocheng City, China","Ma B., School of Sports Medicine and Rehabilitation, Shandong First Medical University, Shandong Academy of Medical Sciences, Shandong Province, Taian City, China, Department of Rehabilitation, Liaocheng People's Hospital, Shandong Province, Liaocheng City, China; Zhang T.-T., School of Sports Medicine and Rehabilitation, Shandong First Medical University, Shandong Academy of Medical Sciences, Shandong Province, Taian City, China; Jia Y.-D., School of Sports Medicine and Rehabilitation, Shandong First Medical University, Shandong Academy of Medical Sciences, Shandong Province, Taian City, China; Wang H., School of Sports Medicine and Rehabilitation, Shandong First Medical University, Shandong Academy of Medical Sciences, Shandong Province, Taian City, China; Zhu X.-Y., School of Sports Medicine and Rehabilitation, Shandong First Medical University, Shandong Academy of Medical Sciences, Shandong Province, Taian City, China; Zhang W.-J., School of Sports Medicine and Rehabilitation, Shandong First Medical University, Shandong Academy of Medical Sciences, Shandong Province, Taian City, China; Li X.-M., School of Sports Medicine and Rehabilitation, Shandong First Medical University, Shandong Academy of Medical Sciences, Shandong Province, Taian City, China; Liu H.-B., School of Sports Medicine and Rehabilitation, Shandong First Medical University, Shandong Academy of Medical Sciences, Shandong Province, Taian City, China; Xie D., School of Sports Medicine and Rehabilitation, Shandong First Medical University, Shandong Academy of Medical Sciences, Shandong Province, Taian City, China","OBJECTIVE: To clarify the characteristics of vertical drop jump (VDJ) for screening athletes at high risk of ACL injury by comparing the kinematic, kinetic and electromyographic variables of different VDJ. SUBJECTS AND METHODS: Thirty male soccer players were recruited to measure parameters of knee kinematics, kinetics, and surface electromyograph during VDJ in four kinds of movements measured (the distance between the take-off feet is 5 cm or 30 cm, and the distance between the landing feet is 5 cm or 30 cm) using the Vicon motion capture system, Kistler3-D dynamometer, and Noraxon surface electromyograph test system. RESULTS: The peak knee abduction moment was significantly greater for landing feet distance of 30 cm compared to landing feet distance of 5 cm, regardless of whether the distance between take-off feet was 5 cm (0.58 vs. 0.44) or 30 cm (0.61 vs. 0.40); regardless of whether the distance between landing feet was 5 cm (22.78 vs. 20.45) or 30 cm (24.32 vs. 21.87), the peak vertical Ground Reaction Force was significantly increased for the take-off feet distance was 5 cm compared to take-off feet of 30 cm. CONCLUSIONS: In the test of VDJ, athletes will adopt different landing strategies for different movement instructions, and the VDJ with the distance of 5 cm between the take-off feet and the distance of 30 cm between the landing feet may be the better maneuver to screen for risk of ACL injury. © 2022 Verduci Editore s.r.l. All rights reserved.","Anterior cruciate ligament injury; Knee; Screen risk; Vertical drop jump","Anterior Cruciate Ligament Injuries; Athletes; Biomechanical Phenomena; Humans; Kinetics; Knee Joint; Male; abduction; anterior cruciate ligament injury; Article; athletics; child; controlled study; electromyography; exercise; football player; human; human experiment; kinematics; kinetics; knee; male; muscle contraction; vertical drop jump; anterior cruciate ligament injury; athlete; biomechanics","Bisciotti GN, Chamari K, Cena E, Bisciotti A, Corsini A, Volpi P., Anterior cruciate ligament injury risk factors in football, J Sports Med Phys Fitness, 59, pp. 1724-1738, (2019); Cheung EC, DiLallo M, Feeley BT, Lansdown DA., Osteoarthritis and ACL Reconstruction-Myths and Risks, Curr Rev Musculoskelet Med, 13, pp. 115-122, (2020); Krosshaug T, Steffen K, Kristianslund E, Nilstad A, Mok KM, Myklebust G, Andersen TE, Holme I, Engebretsen L, Bahr R., The Vertical Drop Jump Is a Poor Screening Test for ACL Injuries in Female Elite Soccer and Handball Players: A Prospective Cohort Study of 710 Athletes, Am J Sports Med, 44, pp. 874-883, (2016); Takahashi S, Nagano Y, Ito W, Kido Y, Okuwaki T., A retrospective study of mechanisms of anterior cruciate ligament injuries in high school basketball, handball, judo, soccer, and volleyball, Medicine, 98, (2019); Dargo L, Robinson KJ, Games KE., Prevention of Knee and Anterior Cruciate Ligament Injuries Through the Use of Neuromuscular and Proprioceptive Training: An Evidence-Based Review, J Athl Train, 52, pp. 1171-1172, (2017); Mehl J, Diermeier T, Herbst E, Imhoff AB, Stoffels T, Zantop T, Petersen w, Achtnich A., Evidence-based concepts for prevention of knee and ACL injuries. 2017 guidelines of the ligament committee of the German Knee Society (DKG), Arch Orthop Trauma Surg, 138, pp. 51-61, (2018); Petushek EJ, Sugimoto D, Stoolmiller M, Smith G, Myer GD., Evidence-Based Best-Practice Guidelines for Preventing Anterior Cruciate Ligament Injuries in Young Female Athletes: A Systematic Review and Meta-analysis, Am J Sports Med, 47, pp. 1744-1753, (2019); Paulson W, Slattengren AH., Effectiveness of ACL Injury Prevention Programs, Am Fam Physician, 97, (2018); Hewett TE, Myer GD, Ford KR, Heidt RS, Colosimo AJ, Mclean SG, Van DEN, Bogert AJ, Paterno MV, Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, pp. 492-501, (2005); Leppanen M, Pasanen K, Kujala UM, Vasankari T, Kannus P, AyramO S, Krosshuag T, Bahr R, Avela J, Perttunen J, Parkkari J., Stiff Landings Are Associated With Increased ACL Injury Risk in Young Female Basketball and Floorball Players, Am J Sports Med, 45, pp. 386-393, (2017); Augustsson SR, Tranberg R, Zugner R, Augustsson J., Vertical drop jump landing depth influences knee kinematics in female recreational athletes, Phys Ther Sport, 33, pp. 133-138, (2018); Laughlin WA, Weinhandl JT, Kernozek TW, Cobb SC, Keenan KG, O'Connor KM., The effects of single-leg landing technique on ACL loading, J Biomech, 44, pp. 1845-1851, (2011); Myers CA, Torry MR, Peterson DS, Shelburne KB, Giphart JE, Krong JP, Woo SL, Steadman JR., Measurements of tibiofemoral kinematics during soft and stiff drop landings using biplane fluoros-copy, Am J Sports Med, 39, pp. 1714-1722, (2011); Greenfield ML, Kuhn JE, Wojtys EM., A statistics primer. Power analysis and sample size determination, Am J Sports Med, 25, pp. 138-140, (1997); Almonroeder TG, Kernozek T, Cobb S, Slavens B, Wang J, Huddleston W., Cognitive Demands Influence Lower Extremity Mechanics During a Drop Vertical Jump Task in Female Athletes, J Orthop Sports Phys Ther, 48, pp. 381-387, (2018); Wilder JN, Riggins ER, Noble RA, Lelito CM, Widenhoefer TL, Almonroeder TG., The effects of drop vertical jump technique on landing and jumping kinetics and jump performance, J Electromyogr Kinesiol, 56, (2021); Bouillon LE, Hofener M, O'Donnel A, Milligan A, Obrock C., Comparison of Muscle Activity Using Unstable Devices During a Forward Lunge, J Sport Rehabil, 29, pp. 394-399, (2020); Dedinsky R, Baker L, Imbus S, Bowman M, Murray L., Exercises That Facilitate Optimal Hamstring and Quadriceps Co-Activation to Help Decrease ACL Injury Risk in Healthy Females: A Systematic Review of the Literature, Int J Sports Phys Ther, 12, pp. 3-15, (2017); Myer GD, Ford KR, Khoury J, Succop P, Hewett TE., Development and validation of a clinic-based prediction tool to identify female athletes at high risk for anterior cruciate ligament injury, Am J Sports Med, 38, pp. 2025-2033, (2010); Cesar GM, Tomasevicz CL, Burnfield JM., Frontal plane comparison between drop jump and vertical jump: implications for the assessment of ACL risk of injury, Sports Biomech, 15, pp. 440-449, (2016); Donohue MR, Ellis SM, Heinbaugh EM, Stephenson ML, Zhu Q, Dai B., Differences and correlations in knee and hip mechanics during single-leg landing, single-leg squat, double-leg landing, and double-leg squat tasks, Res Sports Med, 23, pp. 394-411, (2015); Ishida T, Koshino Y, Yamanaka M, Ueno R, Taniguchi S, Samukawa M, Saito H, Matsumoto H, Aoki Y, Tohyama H., The effects of a subsequent jump on the knee abduction angle during the early landing phase, BMC Musculoskelet Disord, 19, pp. 379-392, (2018); Bates NA, Mejia Jaramillo MC, Vargas M, Mcpherson AL, Schilaty ND, Nagelli CV, Krych AJ, Hewett TE., External loads associated with anterior cruciate ligament injuries increase the correlation between tibial slope and ligament strain during in vitro simulations of in vivo landings, Clin Biomech, 61, pp. 84-94, (2019); Myer GD, Ford KR, Foss KD, Rauh MJ, Paterno MV, Hewett TE., A predictive model to estimate knee-abduction moment: implications for development of a clinically applicable patellofemoral pain screening tool in female athletes, J Athl Train, 49, pp. 389-398, (2014); Navacchia A, Ueno R, Ford KR, DiCesare CA, Myer GD, Hewett TE., EMG-Informed Musculoskeletal Modeling to Estimate Realistic Knee Anterior Shear Force During Drop Vertical Jump in Female Athletes, Ann Biomed Eng, 47, pp. 2416-2430, (2019); Herb CC, Grossman K, Feger MA, Donovan L, Hertel J., Lower Extremity Biomechanics During a Drop-Vertical Jump in Participants With or Without Chronic Ankle Instability, J Athl Train, 53, pp. 364-371, (2018); Ericksen HM, Lefevre C, Luc-Harkey BA, Thomas AC, Gribble PA, Pietrosimone B., Females Decrease Vertical Ground Reaction Forces Following 4-Week Jump-Landing Feedback Intervention Without Negative Affect on Vertical Jump Performance, J Sport Rehabil, 28, pp. 866-870, (2019); Padua DA, DiStefano LJ, Beutler AI, de la Motte SJ, DiStefano MJ, Marshall SW., The Landing Error Scoring System as a Screening Tool for an Anterior Cruciate Ligament Injury-Prevention Program in Elite-Youth Soccer Athletes, J Athl Train, 50, pp. 589-595, (2015); Norcross MF, Blackburn JT, Goerger BM, Padua DA., The association between lower extremity energy absorption and biomechanical factors related to anterior cruciate ligament injury, Clin Biomech, 25, pp. 1031-1036, (2010); Koga H, Nakamae A, Shima Y, Iwasa J, Myklebust G, Engebretsen L, Bahr R, Krosshaug T., Mechanisms for noncontact anterior cruciate ligament injuries: knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, pp. 2218-2225, (2010); Leppanen M, Pasanen K, Krosshaug T, Kannus P, Vasankari T, Kujala UM, Bahr R, Perttunen J, Parkkari J., Sagittal Plane Hip, Knee, and Ankle Biomechanics and the Risk of Anterior Cruciate Ligament Injury: A Prospective Study, Orthop J Sports Med, 5, (2017); Hearn DW, Frank BS, Padua DA., Use of double leg injury screening to assess single leg biomechanical risk variables, Phys Ther Sport, 47, pp. 40-45, (2021); Ueno R, Navacchia A, DiCesare CA, Ford KR, Myer GD, Ishida T., Knee abduction moment is predicted by lower gluteus medius force and larger vertical and lateral ground reaction forces during drop vertical jump in female athletes, J Biomech, 103, (2020)","D. Xie; School of Sports Medicine and Rehabilitation, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian City, Shandong Province, China; email: dxie@sdfmu.edu.cn","","Verduci Editore s.r.l","11283602","","RESFD","36314309","English","Eur. Rev. Med. Pharmacol. Sci.","Article","Final","","Scopus","2-s2.0-85141004757" "Gijon-Nogueron G.; Diaz-Miguel S.; Lopezosa-Reca E.; Cervera-Marin J.A.","Gijon-Nogueron, Gabriel (55826750200); Diaz-Miguel, Salvador (57194639168); Lopezosa-Reca, Eva (56099948200); Cervera-Marin, Jose Antonio (55843302200)","55826750200; 57194639168; 56099948200; 55843302200","Structural changes in the lower extremities in boys aged 7 to 12 years who engage in moderate physical activity: An observational longitudinal study","2017","Journal of the American Podiatric Medical Association","107","3","","215","222","7","1","10.7547/15-193","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85021342349&doi=10.7547%2f15-193&partnerID=40&md5=c6be0122f3a78a87c2aed615fb2f5a72","Department of Nursing and Podiatry, University of Malaga, Malaga, Spain; Private clinic of podiatric medicine, Malaga, Spain","Gijon-Nogueron G., Department of Nursing and Podiatry, University of Malaga, Malaga, Spain; Diaz-Miguel S., Private clinic of podiatric medicine, Malaga, Spain; Lopezosa-Reca E., Department of Nursing and Podiatry, University of Malaga, Malaga, Spain; Cervera-Marin J.A., Department of Nursing and Podiatry, University of Malaga, Malaga, Spain","Background: Physical activity in children may provide health benefits. We sought to consider the practice of soccer as a possible major factor in the development of the lower limb. The study is based on 3-year data for a group of children who practice this sport. Methods: For 3 years we monitored 53 children who practiced soccer 3 times a week and had engaged in 2 years of continuous sports activity. Their mean ± SD age was 8.49 ± 2.01 years in the first year. Each year, Foot Posture Index, valgus index, subtalar joint axis, and Q angle for the knee were analyzed. Results: The mean ± SD Foot Posture Index scores ranged from 5.38 ± 1.79 in the right foot and 4.49 ± 1.67 in the left foot in the first year to 4.64 ± 2.51 and 4.34 ± 2.26, respectively, in the third year. The valgus index for the same period ranged from 14.05° ± 1.51° (right) and 13.88° ± 1.46° (left) to 13.09° ± 1.28° and 13.07° ± 1.07°, respectively. In the knee, the Q angle ranged from 12.83° ± 1.98° (right) and 12.74° ± 1.68° (left) to 13.17° ± 1.45° and 13.26° ± 1.46°, respectively. In the subtalar joint, the changes were 37.73% right and 30.19% left between the first and third years toward a neutral subtalar joint axis. Conclusions: These results show that although playing soccer might cause structural changes in the lower limb, these alterations should not be considered harmful because they may be influenced by age as well. © 2017, American Podiatric Medical Association. All rights reserved.","","Biomechanical Phenomena; Bone Malalignment; Child; Exercise; Humans; Longitudinal Studies; Lower Extremity; Male; Posture; Prospective Studies; Soccer; body position; child; foot; human; longitudinal study; major clinical study; male; physical activity; Q angle; school child; soccer; subtalar joint; biomechanics; bone malformation; exercise; longitudinal study; lower limb; pathophysiology; physiology; prospective study","Janssen I., Leblanc A., Systematic review of the health benefits of physical activity and fitness in school-aged children and youth, Int J Behav Nutr Phys Act, 7, (2010); Sothern M., Loftin M., Suskind R., Et al., The health benefits of physical activity in children and adolescents: Implications for chronic disease prevention, Eur J Pediatr, 158, (1999); Fehily A., Coles R., Evans W., Factors affecting bone density in young adults, Am J Clin Nutr, 56, (1992); Loprinzi P., Cardinal B., Loprinzi K., Et al., Benefits and environmental determinants of physical activity in children and adolescents, Obes Facts, 5, (2012); Froholdt A., Olsen O., Bahr R., Low risk of injuries among children playing organized soccer: A prospective cohort study, Am J Sports Med, 37, (2009); Bizzini M., Dvorak J., FIFA 11þ: An effective programme to prevent soccer injuries in various player groups worldwide: A narrative review, Br J Sports Med, 49, (2015); Bastos F., Vanderlei F., Vanderlei L., Et al., Investigation of characteristics and risk factors of sports injuries in young soccer players: A retrospective study, Int Arch Med, 6, (2013); Walters B., Wolf M., Hanson C., Et al., Soccer injuries in children requiring trauma center admission, J Emerg Med, 46, (2014); Faude O., Rossler R., Junge A., Soccer injuries in children and adolescent players: Are there clues for prevention?, Sports Med, 43, (2013); Schneider A., Mayer H., Geissler U., Injuries in male and female adolescent soccer players [in German], Sportverletz Sportschaden, 27, (2013); Cheema J., Grissom L., Harcke H., Radiographic characteristics of lower-extremity bowing in children, Radiographics, 23, (2003); Storvold G., Aarethun K., Bratberg G., Age for onset of walking and prewalking strategies, Early Hum Dev, 89, (2013); Arazi M., Memik R., Normal development of the tibiofemoral angle in children: A clinical study of 590 normal subjects from 3 to 17 years of age, J Pediatr Orthop, 21, (2001); Greene W., Genu varum and genu valgum in children, Instr Course Lect, 43, (1994); Espandar R., Mortazavi S., Baghdadi T., Angular deformities of the lower limb in children, Asian J Sports Med, 1, (2010); Asadi K., Mirbolook A., Heidarzadeh A., Association of soccer and genu varum in adolescents, Trauma Mon, 20, (2015); Thijs Y., Bellemans J., Rombaut L., Et al., Is high-impact sports participation associated with bowlegs in adolescent boys?, Med Sci Sports Exerc, 44, (2012); Cooney A., Kazi Z., Caplan N., Et al., The relationship between quadriceps angle and tibial tuberosity-trochle-ar groove distance in patients with patellar instability, Knee Surg Sports Traumatol Arthrosc, 20, (2012); Bayraktar B., Yucesir I., Ozturk A., Change of quadriceps angle values with age and activity, Saudi Med J, 25, (2004); Sendur O., Gurer G., Yildirim T., Et al., Relationship of Q angle and joint hypermobility and Q angle values in different positions, Clin Rheumatol, 3, (2006); Luque-Suarez A., Gijon-Nogueron G., Baron-Lopez F., Effects of kinesio-taping on foot posture in participants with pronated foot, Physiotherapy, 100, (2014); Redmond A., Crane Y., Menz H., Normative values for the Foot Posture Index, J Foot Ankle Res, 1, 6, (2008); Keenan A., Redmond A., Horton M., Et al., The Foot Posture Index: Rasch analysis of a novel, foot-specific outcome measure, Arch Phys Med Rehabil, 88, (2007); Cornwall M., McPoil T., Lebec M., Et al., Reliability of the modified Foot Posture Index, JAPMA, 98, (2008); Sanchez H., Sanchez E., Barauna M., Et al., Evaluation of Q angle in different static postures, Acta Ortop Bras, 22, (2014); Kirby K., Subtalar joint axis location and rotational equilibrium theory of foot function, JAPMA, 91, (2001); Thomson C., An investigation into the reliability of the valgus index and its validity as a clinical measurement, Foot, 4, (1994); Staheli L., El Pie, in Staheli Ortopedia Pediátrica, (2003); Cain L., Nicholson L., Adams R., Et al., Foot morphology and foot/ankle injury in indoor football, J Sci Med Sport, 10, (2007); Ortqvist M., Mostrom E., Roos E., Et al., Reliability and reference values of two clinical measurements of dynamic and static knee position in healthy children, Knee Surg Sports Traumatol Arthrosc, 19, (2011)","G. Gijon-Nogueron; Department of Nursing and Podiatry, University of Malaga, Facultad de Ciencias de la Salud C/ Arquitecto Francisco Peñalosa 3 (Ampliación Campus Teatinos), Malaga, 29071, Spain; email: gagijon@uma.es","","American Podiatric Medical Association","87507315","","","28650754","English","J. Am. Podiatr. Med. Assoc.","Article","Final","","Scopus","2-s2.0-85021342349" "Huang Z.; Shan W.; Ding J.; Sun W.; Fong D.T.P.","Huang, Zhanyu (57220584238); Shan, Wei (57220583303); Ding, Junyuan (57220572877); Sun, Wei (56085436300); Fong, Daniel T. P. (8274063100)","57220584238; 57220583303; 57220572877; 56085436300; 8274063100","Peroneal reaction time delayed but dynamic single-legged stability retained in collegiate footballers during a simulated prolonged football protocol","2021","Research in Sports Medicine","29","6","","557","570","13","1","10.1080/15438627.2020.1857251","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097410137&doi=10.1080%2f15438627.2020.1857251&partnerID=40&md5=582760c138fbff9b64c2daeca2510ff4","National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom; China Institute of Sport and Health Science, Beijing Sport University, Beijing, China; College of Sports and Health, Shandong Sport University, Jinan, China","Huang Z., National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom; Shan W., National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom, China Institute of Sport and Health Science, Beijing Sport University, Beijing, China; Ding J., National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom; Sun W., College of Sports and Health, Shandong Sport University, Jinan, China; Fong D.T.P., National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom","Delayed peroneal reaction time and impaired single-legged dynamic stability were risk factors of lateral ankle sprain (LAS), yet no study explored the change of them during a football match. The aim is to explore the change of peroneal reaction time and single-legged dynamic stability during a football simulation protocol. Twelve collegiate football players voluntarily completed a 105-min football match simulation protocol in which peroneal reaction time, root-mean-square of mediolateral ground reaction force in first 0.4 s (RMS ML 0.4), and the mean mediolateral ground reaction force in the late stage (late dynamic MLGRF), were measured for both legs at 15-min intervals during the protocol. Peroneal reaction time was tested using an electromyography (EMG) system. The ground reaction force variables were measured from GRF data after a single-legged drop-jump landing. Repeated measures one-way MANOVA was conducted to evaluate variables over time and leg dominance. Statistical significance was set at p < 0.05 level. Peroneal reaction time significantly increased for both legs at 45 minutes and after 60 minutes. RMS ML 0.4 of both legs and late dynamic MLGRF for dominant leg remained unchanged throughout the protocol and late dynamic MLGRF for non-dominant leg significantly reduced at the 90th minute. © 2020 Informa UK Limited, trading as Taylor & Francis Group.","ankle injuries; Ankle sprain; biomechanics; ligamentous sprain; sensorimotor control; soccer; sports medicine","Ankle Injuries; Athletic Injuries; Electromyography; Female; Humans; Lower Extremity; Male; Muscle, Skeletal; Postural Balance; Reaction Time; Soccer; Young Adult; ankle injury; body equilibrium; electromyography; female; human; lower limb; male; pathophysiology; physiology; reaction time; skeletal muscle; soccer; sport injury; young adult","Anandacoomarasamy A., Barnsley L., Long term outcomes of inversion ankle injuries, British Journal of Sports Medicine, 39, 3, (2005); Andersen T.E., Floerenes T.W., Arnason A., Bahr R., Video analysis of the mechanisms for ankle injuries in football, American Journal of Sports Medicine, 32, 1 Supp, (2004); Ashton-Miller J.A., Ottaviani R.A., Hutchinson C., Wojtys E.M., What best protects the inverted weightbearing ankle against further inversion? 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Silva B.A.R.S., Martinez F.G., Pacheco A.M., Pacheco I., Efeitos da fadiga muscular induzida por exercícios no tempo de reação muscular dos fibulares em indivíduos sadios, Revista Brasileira De Medicina Do Esporte, 12, 2, pp. 85-89, (2006); Stegeman D., Hermens H., Standards for surface electromyography: The European project Surface EMG for non-invasive assessment of muscles (SENIAM), (2007); Tamura A., Akasaka K., Otsudo T., Sawada Y., Okubo Y., Shiozawa J., Toda Y., Yamada K., Fatigue alters landing shock attenuation during a single-leg vertical drop jump, Orthopaedic Journal of Sports Medicine, 4, 1, (2016); Thain P.K., Hughes G.T.G., Mitchell A.C.S., The effect of repetitive ankle perturbations on muscle reaction time and muscle activity, Journal of Electromyography and Kinesiology, 30, pp. 184-190, (2016); Walden M., Hagglund M., Ekstrand J., Time-trends and circumstances surrounding ankle injuries in men’s professional football: An 11-year follow-up of the UEFA Champions League injury study, British Journal of Sports Medicine, 47, 12, pp. 748-753, (2013); 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Fong; National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, LE11 3TU, United Kingdom; email: d.t.fong@lboro.ac.uk","","Routledge","15438627","","RSMEC","33297786","English","Res. Sports Med.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85097410137" "Di Paolo S.; Grassi A.; Bragonzoni L.; Zaffagnini S.; Della Villa F.","Di Paolo, Stefano (57209464265); Grassi, Alberto (57205264407); Bragonzoni, Laura (7801511871); Zaffagnini, Stefano (7003438311); Della Villa, Francesco (55780654000)","57209464265; 57205264407; 7801511871; 7003438311; 55780654000","Foot rotation and pelvic angle correlate with knee abduction moment during 180° lateral cut in football players","2023","Knee","43","","","81","88","7","1","10.1016/j.knee.2023.05.008","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85161289002&doi=10.1016%2fj.knee.2023.05.008&partnerID=40&md5=eac983bf17a88cb06e06d69d2121afd4","Department for Life Quality Studies, University of Bologna, Bologna, Italy; 2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy; Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy; Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy","Di Paolo S., Department for Life Quality Studies, University of Bologna, Bologna, Italy; Grassi A., 2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy; Bragonzoni L., Department for Life Quality Studies, University of Bologna, Bologna, Italy; Zaffagnini S., 2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy; Della Villa F., Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy","Background: Lateral movements are challenging for 2D video-analysis and are therefore often omitted in functional tests for Anterior Cruciate Ligament (ACL) injury risk assessment. The purpose of the present study was to investigate the association between frontal and transverse plane angles obtained from 2D video-analysis and knee abduction moment (KAM) from gold standard 3D motion capture in a 180° lateral cut task. The hypothesis was that 2D angles other than the knee joint effectively explain variations in KAM. Methods: Thirty-four healthy football players (age 22.8 ± 4.1 years) performed a series of 180° lateral cut (lateral shuffles) tasks. The peak KAM was collected through a 3D motion capture system. A 2D video-analysis movement assessment identified frontal and transverse plane joint kinematics: foot projection angle (FPA), Frontal Plane Knee Projection Angle (FPKPA), Pelvis tilt angle (PA), and Trunk tilt angle (TA). A forward stepwise regression model was used to assess significant 2D predictors of KAM (p < 0.05). Results: FPA and PA were the only significant predictors (R2-ajdusted = 9.2%, p < 0.001), with external foot rotation and contralateral pelvic drop associated with higher KAM. Based on the regression model, the “High FPA & PA group” was defined and showed higher KAM than the rest of the cohort (p = 0.012, ES = 0.71). Conclusions: The external foot rotation and the contralateral pelvic drop from 2D video-analysis were associated with higher peak KAM during the 180° lateral cut. A qualitative assessment of the 180° lateral cut could offer precious insights on ACL injury risk mitigation. Level of Evidence: Descriptive Laboratory Study. © 2023 Elsevier B.V.","2D video-analysis; ACL injury prevention; Lateral shuffle; Qualitative assessment; Soccer","Adolescent; Adult; Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Football; Humans; Knee; Knee Joint; Pelvis; Rotation; Young Adult; adult; anterior cruciate ligament injury; anthropometric parameters; Article; biomechanics; body mass; controlled study; effect size; female; foot projection angle; foot rotation; football player; frontal plane knee projection angle; human; human experiment; kinematics; knee abduction moment; lateral cut task; male; motion capture; normal human; pelvic angle; pelvic tilt; task performance; three-dimensional imaging; adolescent; anterior cruciate ligament injury; football; knee; pelvis; rotation; young adult","Abrams G.D., Harris J.D., Gupta A.K., McCormick F.M., Bush-Joseph C.A., Verma N.N., Et al., Functional performance testing after anterior cruciate ligament reconstruction: a systematic review, Orthop J Sports Med, 2, (2014); King E., Richter C., Daniels K.A.J., Franklyn-Miller A., Falvey E., Myer G.D., Et al., Biomechanical but not strength or performance measures differentiate male athletes who experience ACL reinjury on return to level 1 sports, Am J Sports Med, (2021); Hewett T.E., Bates N.A., Preventive biomechanics: a paradigm shift with a translational approach to injury prevention, Am J Sports Med, 45, pp. 2654-2664, (2017); Myer G.D., Ford K.R., Di Stasi S.L., Foss K.D.B., Micheli L.J., Hewett T.E., High knee abduction moments are common risk factors for patellofemoral pain (PFP) and anterior cruciate ligament (ACL) injury in girls: is PFP itself a predictor for subsequent ACL injury?, Br J Sports Med, 49, pp. 118-122, (2015); Hewett T.E., Myer G.D., Kiefer A.W., Ford K.R., Longitudinal increases in knee abduction moments in females during adolescent growth, Med Sci Sports Exerc, 47, pp. 2579-2585, (2015); Sigurdsson H.B., Karlsson J., Snyder-Mackler L., Briem K., Kinematics observed during ACL injury are associated with large early peak knee abduction moments during a change of direction task in healthy adolescents, J Orthop Res, (2020); Bates N.A., Schilaty N.D., Nagelli C.V., Krych A.J., Hewett T.E., Multiplanar loading of the knee and its influence on anterior cruciate ligament and medial collateral ligament strain during simulated landings and noncontact tears, Am J Sports Med, 47, pp. 1844-1853, (2019); Donelon T.A., Dos'Santos T., Pitchers G., Brown M., Jones P.A., Biomechanical determinants of knee joint loads associated with increased anterior cruciate ligament loading during cutting: a systematic review and technical framework, Sports Med Open, 6, (2020); Gokeler A., Welling W., Zaffagnini S., Seil R., Padua D., Development of a test battery to enhance safe return to sports after anterior cruciate ligament reconstruction, Knee Surg Sports Traumatol Arthrosc, 25, pp. 192-199, (2017); Dos'Santos T., McBurnie A., Donelon T., Thomas C., Comfort P., Jones P.A., A qualitative screening tool to identify athletes with “high-risk” movement mechanics during cutting: The cutting movement assessment score (CMAS), Phys Ther Sport, 38, pp. 152-161, (2019); Zaslow T.L., Pace J.L., Mueske N.M., Chua M.C., Katzel M.J., Dennis S.W., Et al., Comparison of lateral shuffle and side-step cutting in young recreational athletes, Gait Posture, 44, pp. 189-193, (2016); Martinez-Hernandez D., Quinn M., Jones P., Linear advancing actions followed by deceleration and turn are the most common movements preceding goals in male professional soccer, Sci Med Footb, pp. 1-9, (2022); Della Villa F., Di Paolo S., Santagati D., Della Croce E., Lopomo N.F., Grassi A., Et al., A 2D video-analysis scoring system of 90° change of direction technique identifies football players with high knee abduction moment, Knee Surg Sports Traumatol Arthrosc, (2021); Di Paolo S., Zaffagnini S., Tosarelli F., Grassi A., Della Villa F., Beyond distance: a simple qualitative assessment of the single-leg hop test in return-to-play testing, Sports Health, (2022); Hewett T.E., Torg J.S., Boden B.P., Video analysis of trunk and knee motion during non-contact anterior cruciate ligament injury in female athletes: lateral trunk and knee abduction motion are combined components of the injury mechanism, Br J Sports Med, 43, pp. 417-422, (2009); Di Paolo S., Zaffagnini S., Tosarelli F., Aggio F., Bragonzoni L., Grassi A., Et al., A 2D qualitative movement assessment of a deceleration task detects football players with high knee joint loading, Knee Surg Sports Traumatol Arthrosc, (2021); Baumgart C., Schubert M., Hoppe M.W., Gokeler A., Freiwald J., Do ground reaction forces during unilateral and bilateral movements exhibit compensation strategies following ACL reconstruction?, Knee Surg Sports Traumatol Arthrosc, 25, pp. 1385-1394, (2017); Maurus P., Asmussen M.J., Cigoja S., Nigg S.R., Nigg B.M., The submaximal lateral shuffle test: a reliability and sensitivity analysis, J Sports Sci, 37, pp. 2066-2074, (2019); Straub R.K., Powers C.M., Utility of 2D video analysis for assessing frontal plane trunk and pelvis motion during stepping, landing, and change in direction tasks: a validity study, Int J Sports Phys Ther, 17, pp. 139-147, (2022); Della Villa F., Buckthorpe M., Grassi A., Nabiuzzi A., Tosarelli F., Zaffagnini S., Et al., Systematic video analysis of ACL injuries in professional male football (soccer): injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, Br J Sports Med, (2020); Lucarno S., Zago M., Buckthorpe M., Grassi A., Tosarelli F., Smith R., Et al., Systematic video analysis of anterior cruciate ligament injuries in professional female soccer players, Am J Sports Med, (2021); van der Kruk E., Reijne M.M., Accuracy of human motion capture systems for sport applications; state-of-the-art review, Eur J Sport Sci, 18, pp. 806-819, (2018); Peel S.A., Schroeder L.E., Sievert Z.A., Weinhandl J.T., Comparing anterior cruciate ligament injury risk variables between unanticipated cutting and decelerating tasks, J Appl Biomech, 35, pp. 101-106, (2019); Bloomfield J., Polman R., O'Donoghue P., Physical demands of different positions in FA premier league soccer, J Sports Sci Med, 6, pp. 63-70, (2007); Kotsifaki A., Korakakis V., Whiteley R., Van Rossom S., Jonkers I., Measuring only hop distance during single leg hop testing is insufficient to detect deficits in knee function after ACL reconstruction: a systematic review and meta-analysis, Br J Sports Med, 54, pp. 139-153, (2020); Olivares-Jabalera J., Filter-Ruger A., Dos'Santos T., Ortega-Dominguez J., Sanchez-Martinez R.R., Soto Hermoso V.M., Et al., Is there association between cutting and jump-landing movement quality in semi-professional football players? Implications for ACL injury risk screening, Phys Ther Sport, 56, pp. 15-23, (2022); Padua D.A., DiStefano L.J., Beutler A.I., de la Motte S.J., DiStefano M.J., Marshall S.W., The landing error scoring system as a screening tool for an anterior cruciate ligament injury-prevention program in elite-youth soccer athletes, J Athl Train, 50, pp. 589-595, (2015); Della Villa F., Tosarelli F., Ferrari R., Grassi A., Ciampone L., Nanni G., Et al., Systematic video analysis of anterior cruciate ligament injuries in professional male rugby players: pattern, injury mechanism, and biomechanics in 57 consecutive cases, Orthop J Sports Med, 9, (2021); Hewett T.E., Ford K.R., Xu Y.Y., Khoury J., Myer G.D., Effectiveness of neuromuscular training based on the neuromuscular risk profile, Am J Sports Med, 45, pp. 2142-2147, (2017); Sabet S., Letafatkar A., Eftekhari F., Khosrokiani Z., Gokeler A., Trunk and hip control neuromuscular training to target inter limb asymmetry deficits associated with anterior cruciate ligament injury, Phys Ther Sport, 38, pp. 71-79, (2019); Buckthorpe M., Della V.F., Optimising the “Mid-Stage” training and testing process after ACL reconstruction, Sports Med, 50, pp. 657-678, (2020); Afonso J., da Costa I.T., Camoes M., Silva A., Lima R.F., Milheiro A., Et al., The effects of agility ladders on performance: a systematic review, Int J Sports Med, 41, pp. 720-728, (2020); Loughran G.J., Vulpis C.T., Murphy J.P., Weiner D.A., Svoboda S.J., Hinton R.Y., Et al., Incidence of knee injuries on artificial turf versus natural grass in national collegiate athletic Association American football: 2004–2005 through 2013–2014 seasons, Am J Sports Med, 47, pp. 1294-1301, (2019); Xiao M., Lemos J.L., Hwang C.E., Sherman S.L., Safran M.R., Abrams G.D., Increased risk of ACL injury for female but not male soccer players on artificial turf versus natural grass: a systematic review and meta-analysis, Orthop J Sports Med, 10, (2022)","S. Di Paolo; Department for Life Quality Studies QUVI, Università di Bologna, Bologna, Via Giulio Cesare Pupilli, 1, BO, 40136, Italy; email: stefano.dipaolo@ior.it","","Elsevier B.V.","09680160","","KNEEF","37295045","English","Knee","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85161289002" "Zago M.; Esposito F.; Stillavato S.; Zaffagnini S.; Frigo C.A.; Della Villa F.","Zago, Matteo (57220045130); Esposito, Fabio (7102220772); Stillavato, Susanna (57827809600); Zaffagnini, Stefano (7003438311); Frigo, Carlo Albino (7004033326); Della Villa, Francesco (55780654000)","57220045130; 7102220772; 57827809600; 7003438311; 7004033326; 55780654000","3-Dimensional Biomechanics of Noncontact Anterior Cruciate Ligament Injuries in Male Professional Soccer Players","2024","American Journal of Sports Medicine","52","7","","1794","1803","9","0","10.1177/03635465241248071","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85193076702&doi=10.1177%2f03635465241248071&partnerID=40&md5=6ea0c2f4148e77386d7ca791a7871c62","Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, Italy; Clinica Ortopedica e Traumatologica II, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy; Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milano, Italy; Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy","Zago M., Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, Italy; Esposito F., Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, Italy; Stillavato S., Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, Italy; Zaffagnini S., Clinica Ortopedica e Traumatologica II, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy; Frigo C.A., Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milano, Italy; Della Villa F., Education and Research Department, Isokinetic Medical Group, FIFA Medical Centre of Excellence, Bologna, Italy","Background: The understanding of noncontact anterior cruciate ligament (ACL) injury causation in soccer has improved over the past decades. Bidimensional video analyses have significantly augmented our awareness, representing to date the only practical method to describe injury biomechanics. However, the extent of the problem continues to raise serious concerns. Purpose: To advance our understanding of the causal pathways leading to ACL injury with a large-scale reconstruction of 3-dimensional (3D) whole-body joint kinematics of injuries that occurred to male elite soccer players, as well as to compare the joint angle time course among situational patterns. Study Design: Descriptive laboratory study. Methods: A total of 33 consecutive noncontact and indirect contact ACL injuries that occurred in 6 national and 2 international professional leagues (seasons 2020-2021 to 2022-2023 until December 2022) were analyzed: (1) multiview noncoaxial television images were inspected; (2) multiple camera views were taken from 400 ms before the initial ground contact to 200 ms after the injury frame; (3) a size-matched pitch was modeled and used to calibrate cameras; (4) a 3D skeletal model was adjusted to fit the player's pose in each frame/view; and (5) poses were interpolated, and Euler joint angles were extracted. Results: The authors reconstructed the 3D lower limb joint kinematic curves preceding and during ACL injuries in 33 cases; notably, a sudden external (up to 5°) and then internal knee rotation was observed after the initial contact and before the injury frame. The overall kinematics at injury were knee moderately flexed (45.9°± 21.7°), abducted (4.3°± 5.1°), and externally rotated (3.0°± 6.4°); trunk shallowly flexed (17.4°± 12.5°) and rotated and tilted toward the injured side; and hip flexed (32.0°± 18.7°), abducted (31.1°± 12.0°), and slightly internally rotated (6.6°± 12.2°). Variable behaviors were observed at the ankle level. Conclusion: Via reconstruction of the sequence of whole-body joint motion leading to injury, we confirmed the accepted gross biomechanics (dynamic valgus trend). This study significantly enriches the current knowledge on multiplanar kinematic features (transverse and coronal plane rotations). Furthermore, it was shown that ACL injuries in male professional soccer players manifest through distinct biomechanical footprints related to the concurrent game situation. Clinical Relevance: Interventions aimed at reducing ACL injuries in soccer should consider that environmental features (ie, situational patterns) affect injury mechanics. © 2024 The Author(s).","ACL; biomechanics; injury prevention; kinematics; soccer medicine","Adult; Anterior Cruciate Ligament Injuries; Athletic Injuries; Biomechanical Phenomena; Humans; Imaging, Three-Dimensional; Knee Joint; Male; Soccer; Video Recording; Young Adult; adult; anterior cruciate ligament injury; biomechanics; human; injury; knee joint; male; pathophysiology; physiology; soccer; sport injury; three-dimensional imaging; videorecording; young adult","Beaulieu M.L., Ashton-Miller J.A., Wojtys E.M., Loading mechanisms of the anterior cruciate ligament, Sports Biomech, 22, 1, pp. 1-29, (2023); Bertozzi F., Fischer P.D., Hutchison K.A., Zago M., Sforza C., Monfort S.M., Associations between cognitive function and ACL injury-related biomechanics: a systematic review, Sports Health, 15, 6, pp. 855-866, (2023); Bittencourt N.F.N., Meeuwisse W.H., Mendonca L.D., Nettel-Aguirre A., Ocarino J.M., Fonseca S.T., Complex systems approach for sports injuries: moving from risk factor identification to injury pattern recognition—narrative review and new concept, Br J Sports Med, 50, 21, pp. 1309-1314, (2016); Boden B.P., Torg J.S., Knowles S.B., Hewett T.E., Video analysis of anterior cruciate ligament injury, Am J Sports Med, 37, 2, pp. 252-259, (2009); David S., Komnik I., Peters M., Funken J., Potthast W., Identification and risk estimation of movement strategies during cutting maneuvers, J Sci Med Sport, 20, 12, pp. 1075-1080, (2017); David S., Mundt M., Komnik I., Potthast W., Understanding cutting maneuvers—the mechanical consequence of preparatory strategies and foot strike pattern, Hum Mov Sci, 62, pp. 202-210, (2018); Davids K., Principles of motor learning in ecological dynamics: a comment on functions of learning and the acquisition of motor skills (with reference to sport), Open Sports Sci J, 5, 1, pp. 113-117, (2012); Della Villa F., Buckthorpe M., Grassi A., Et al., Systematic video analysis of ACL injuries in professional male football (soccer): injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, Br J Sports Med, 54, pp. 1423-1432, (2020); Della Villa F., Esposito F., Busa M., Stillavato S., Zago M., The three-dimensional reconstruction of an Achilles tendon rupture in a professional football player reveals a multiplanar injury mechanism, Knee Surg Sports Traumatol Arthrosc, 30, 12, pp. 4198-4202, (2022); Ekstrand J., Spreco A., Bengtsson H., Bahr R., Injury rates decreased in men's professional football: an 18-year prospective cohort study of almost 12 000 injuries sustained during 1.8 million hours of play, Br J Sports Med, 55, 19, pp. 1084-1092, (2021); Gokeler A., Benjaminse A., Della Villa F., Tosarelli F., Verhagen E., Baumeister J., Anterior cruciate ligament injury mechanisms through a neurocognition lens: implications for injury screening, BMJ Open Sport Exerc Med, 7, 2, (2021); Grassi A., Smiley S.P., Roberti D., Sarsina T., Et al., Mechanisms and situations of anterior cruciate ligament injuries in professional male soccer players: a YouTube-based video analysis, Eur J Orthop Surg Traumatol, 27, 7, pp. 967-981, (2017); Hewett T.E., Myer G.D., Ford K.R., Anterior cruciate ligament injuries in female athletes, part 1: mechanisms and risk factors, Am J Sports Med, 34, 2, pp. 299-311, (2006); Hewett T.E., Myer G.D., Ford K.R., Paterno M.V., Quatman C.E., Mechanisms, prediction, and prevention of ACL injuries: cut risk with three sharpened and validated tools, J Orthop Res, 34, 11, pp. 1843-1855, (2016); Johnston J.T., Mandelbaum B.R., Schub D., Et al., Video analysis of anterior cruciate ligament tears in professional American football athletes, Am J Sports Med, 46, 4, pp. 862-868, (2018); Kingston B., Murray A., Norte G.E., Glaviano N.R., Validity and reliability of 2-dimensional trunk, hip, and knee frontal plane kinematics during single-leg squat, drop jump, and single-leg hop in females with patellofemoral pain, Phys Ther Sport, 45, pp. 181-187, (2020); Koga H., Bahr R., Myklebust G., Engebretsen L., Grund T., Krosshaug T., Estimating anterior tibial translation from model-based image-matching of a noncontact anterior cruciate ligament injury in professional football: a case report, Clin J Sport Med, 21, 3, pp. 271-274, (2011); Koga H., Muneta T., Bahr R., Engebretsen L., Krosshaug T., Video analysis of ACL injury mechanisms using a model-based image-matching technique, Sports Injuries and Prevention, 2015, pp. 109-120; Koga H., Nakamae A., Shima Y., Et al., Mechanisms for noncontact anterior cruciate ligament injuries, Am J Sports Med, 38, 11, pp. 2218-2225, (2010); Koga H., Nakamae A., Shima Y., Bahr R., Krosshaug T., Hip and ankle kinematics in noncontact anterior cruciate ligament injury situations: video analysis using model-based image matching, Am J Sports Med, 46, 2, pp. 333-340, (2018); Krosshaug T., Bahr R., A model-based image-matching technique for three-dimensional reconstruction of human motion from uncalibrated video sequences, J Biomech, 38, 4, pp. 919-929, (2005); Kwan M.K., Lin T.H.C., Woo S.L.Y., On the viscoelastic properties of the anteromedial bundle of the anterior cruciate ligament, J Biomech, 26, 4-5, pp. 447-452, (1993); Lemme N.J., Li N.Y., Kleiner J.E., Tan S., DeFroda S.F., Owens B.D., Epidemiology and video analysis of Achilles tendon ruptures in the National Basketball Association, Am J Sports Med, 47, 10, pp. 2360-2366, (2019); Lucarno S., Zago M., Buckthorpe M., Et al., Systematic video analysis of ACL injuries in professional women soccer players, Am J Sports Med, 49, 7, pp. 1794-1802, (2021); Manolopoulos E., Papadopoulos C., Kellis E., Effects of combined strength and kick coordination training on soccer kick biomechanics in amateur players, Scand J Med Sci Sports, 16, 2, pp. 102-110, (2006); Markolf K.L., O'Neill G., Jackson S.R., McAllister D.R., Effects of applied quadriceps and hamstrings muscle loads on forces in the anterior and posterior cruciate ligaments, Am J Sports Med, 32, 5, pp. 1144-1149, (2004); Montgomery C., Blackburn J., Withers D., Tierney G., Moran C., Simms C., Mechanisms of ACL injury in professional rugby union: a systematic video analysis of 36 cases, Br J Sports Med, 52, 15, pp. 994-1001, (2018); Pataky T.C., Robinson M.A., Varenterghem J., Vector field statistical analysis of kinematic and force trajectories, J Biomech, 46, 14, pp. 2394-2401, (2013); Pol R., Hristovski R., Medina D., Balague N., From microscopic to macroscopic sports injuries: applying the complex dynamic systems approach to sports medicine: a narrative review, Br J Sports Med, 53, 19, pp. 1214-1220, (2019); Pulici L., Certa D., Zago M., Volpi P., Esposito F., Injury burden in professional European football (soccer): systematic review, meta-analysis, and economic considerations, Clin J Sport Med, 33, 4, pp. 450-457, (2023); Quatman C.E., Quatman-Yates C.C., Hewett T.E., A “plane” explanation of anterior cruciate ligament injury mechanisms: a systematic review, Sports Med, 40, pp. 729-746, (2010); Rafeeuddin R., Sharir R., Staes F., Et al., Mapping current research trends on neuromuscular risk factors of non-contact ACL injury, Phys Ther Sport, 22, pp. 101-113, (2016); Santos C.F., Bastos R., Andrade R., Et al., Revisiting the role of knee external rotation in non-contact ACL mechanism of injury, Applied Sci (Switzerland), 13, 6, (2023); Song Y., Li L., Hughes G., Dai B., Trunk motion and anterior cruciate ligament injuries: a narrative review of injury videos and controlled jump-landing and cutting tasks, Sports Biomech, 22, 1, pp. 46-64, (2023); Voskanian N., ACL injury prevention in female athletes: review of the literature and practical considerations in implementing an ACL prevention program, Curr Rev Musculoskelet Med, 6, 2, pp. 158-163, (2013); Webster K.E., Hewett T.E., Meta-analysis of meta-analyses of anterior cruciate ligament injury reduction training programs, J Orthop Res, 36, 10, pp. 2696-2708, (2018); Weir G., Anterior cruciate ligament injury prevention in sport: biomechanically informed approaches, Sports Biomech; Wojtys E.M., Beaulieu M.L., Ashton-Miller J.A., New perspectives on ACL injury: on the role of repetitive sub-maximal knee loading in causing ACL fatigue failure, J Orthop Res, 34, 12, pp. 2059-2068, (2016); Wu G., Cavanagh P.R., ISB recommendations in the reporting for standardization of kinematic data, J Biomech, 28, 10, pp. 1257-1261, (1995); Yona T., Kamel N., Cohen-Eick G., Ovadia I., Fischer A., One-dimension statistical parametric mapping in lower limb biomechanical analysis: a systematic scoping review, Gait Posture, 109, (2024); Zago M., David S., Bertozzi F., Et al., Fatigue induced by repeated changes of direction in élite female football (soccer) players: impact on lower limb biomechanics and implications for ACL injury prevention, Front Bioeng Biotechnol, 9, (2021)","M. Zago; Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, Italy; email: matteo.zago@unimi.it","","SAGE Publications Inc.","03635465","","AJSMD","38742580","English","Am. J. Sports Med.","Article","Final","","Scopus","2-s2.0-85193076702" "Jenner B.; Nottle C.; Walters J.L.; Saunders S.W.; Leicht A.S.; Crowther R.G.","Jenner, Brooke (58066927300); Nottle, Carmel (58653975500); Walters, Julie L. (25923158600); Saunders, Steven W. (8653774100); Leicht, Anthony S. (6507370714); Crowther, Robert G. (15756955200)","58066927300; 58653975500; 25923158600; 8653774100; 6507370714; 15756955200","Reliability of the running vertical jump test in female team sport athletes","2023","Physical Therapy in Sport","60","","","47","53","6","1","10.1016/j.ptsp.2023.01.005","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146342267&doi=10.1016%2fj.ptsp.2023.01.005&partnerID=40&md5=d78da4e23232ef16104d3fb354c0cb16","UniSA: Allied Health and Human Performance, University of South Australia, Adelaide, 5001, Australia; Alliance for Research in Exercise, Nutrition & Activity (ARENA), University of South Australia, Adelaide, 5001, Australia; Saunders Physiotherapy, Adelaide, 5000, Australia; Sport and Exercise Science, James Cook University, 4811, QLD, Australia","Jenner B., UniSA: Allied Health and Human Performance, University of South Australia, Adelaide, 5001, Australia, Alliance for Research in Exercise, Nutrition & Activity (ARENA), University of South Australia, Adelaide, 5001, Australia; Nottle C., UniSA: Allied Health and Human Performance, University of South Australia, Adelaide, 5001, Australia, Alliance for Research in Exercise, Nutrition & Activity (ARENA), University of South Australia, Adelaide, 5001, Australia; Walters J.L., UniSA: Allied Health and Human Performance, University of South Australia, Adelaide, 5001, Australia, Alliance for Research in Exercise, Nutrition & Activity (ARENA), University of South Australia, Adelaide, 5001, Australia; Saunders S.W., Saunders Physiotherapy, Adelaide, 5000, Australia; Leicht A.S., Sport and Exercise Science, James Cook University, 4811, QLD, Australia; Crowther R.G., UniSA: Allied Health and Human Performance, University of South Australia, Adelaide, 5001, Australia, Alliance for Research in Exercise, Nutrition & Activity (ARENA), University of South Australia, Adelaide, 5001, Australia","Injury rates to the lower limb have increased over the past 40 years, coinciding with increases in female sport participation rates. Sport specific tests such as the running vertical jump (RVJ) are utilised for injury risk profiling, however the test-retest reliability is unknown. Objectives: The aim of this study was to investigate the test-retest reliability of the thorax, pelvis and lower limb joint angular kinematics and kinetics for the RVJ test in female team sport athletes. Design: Three-dimensional motion capture with force plate integration was utilised as participants performed five trials on each limb on three separate days. Setting: Testing occurred in a biomechanics laboratory. Participants: Thirty-four females (Australian Rules Football = 15, Netball = 12, Soccer = 7) participated in this study. Main Outcome Measures: Intraclass correlation coefficients (ICC), effect sizes and typical errors (TE) of segment and joint angular kinematics and kinetics were calculated. Results: Poor to excellent reliability (ICC = −0.12 – 0.92), small to large effect sizes (0.00–0.90) and TE (0.02–289.24) were observed across segment and joint angular kinematics and kinetics. Conclusions: The RVJ test is recommended when analysing ground reaction forces and joint angular kinematics in female team sport athletes. © 2023 Elsevier Ltd","Female; Landing; Reliability","Athletes; Australia; Basketball; Biomechanical Phenomena; Female; Humans; Knee Joint; Lower Extremity; Reproducibility of Results; Team Sports; adult; article; athlete; biomechanics; clinical article; correlation coefficient; effect size; female; football; ground reaction force; human; joint; kinematics; kinetics; lower limb; motion; outcome assessment; pelvis; reliability; running; soccer; team sport; test retest reliability; thorax; athlete; Australia; basketball; knee; reproducibility","Alentorn-Geli E., Myer G., Silvers H., Samitier G., Romero D., Lazaro-Haro C., Cugat R., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 1: Mechanisms of injury and underlying risk factors, Knee Surgery, Sports Traumatology, Arthroscopy, 17, 7, pp. 705-729, (2009); Arundale A., Silvers-Granelli H., Snyder-Mackler L., Career length and injury incidence after anterior cruciate ligament reconstruction in major league soccer players, Orthopaedic Journal of Sports Medicine, 6, 1, pp. 1-8, (2018); Beardt B., McCollum M., Hinshaw T., Layer J., Wilson M., Zhu Q., Dai B., Lower-extremity kinematics differed between a controlled drop-jump and volleyball-takeoffs, Journal of Applied Biomechanics, 34, 4, pp. 327-335, (2018); C-Motion, Functional joints, C-motion wiki documentation, (2020); Cappozzo A., Cappello A., Croce U., Pensalfini F., Surface-marker cluster design criteria for 3-D bone movement reconstruction, IEEE Transactions on Biomedical Engineering, 44, 12, pp. 1165-1174, (1997); Cappozzo A., Catani F., Della Croce U., Leardini A., Position and orientation in space of bones during movement: Anatomical frame definition and determination, Clinical Biomechanics, 10, 4, pp. 171-178, (1995); Carreiro J., Lower L., Pediatric manual medicine, pp. 273-327, (2009); Chinnasee C., Weir G., Sasimontonkul S., Alderson J., Donnelly C., A biomechanical comparison of single-leg landing and unplanned sidestepping, International Journal of Sports Medicine, 39, 8, pp. 636-645, (2018); Collings T., Gorman A., Stuelcken M., Mellifont D., Sayers M., Exploring the justifications for selecting a drop landing task to assess injury biomechanics: A narrative review and analysis of landings performed by female netball players, Sports Medicine, 49, 3, pp. 389-395, (2019); Dempsey A., Elliott B., Munro B., Steele J., Lloyd D., Whole body kinematics and knee moments that occur during an overhead catch and landing task in sport, Clinical Biomechanics, 27, 5, pp. 466-474, (2012); Adult pre-exercise screening system (APSS), Exercise and sports science Australia, (2019); Ford K.R., Myer G.D., Hewett T.E., Valgus knee motion during landing in high school female and male basketball players, Medicine & Science in Sports & Exercise, 35, 10, pp. 1745-1750, (2003); Fox A., Bonacci J., Hoffmann S., Nimphius S., Saunders N., Anterior cruciate ligament injuries in Australian football: Should women and girls be playing? You're asking the wrong question, BMJ Open Sport & Exercise Medicine, 6, 1, pp. 1-3, (2020); Fox A., Bonacci J., McLean S., Saunders N., Efficacy of ACL injury risk screening methods in identifying high-risk landing patterns during a sport-specific task, Scandinavian Journal of Medicine & Science in Sports, 27, 5, pp. 525-534, (2017); Fox A., Bonacci J., Saunders N., The relationship between performance of a single-leg squat and leap landing task: Moving towards a netball-specific anterior cruciate ligament (ACL) injury risk screening method, Sports Biomechanics, 19, 4, pp. 493-509, (2020); Gorton G., Hebert D., Gannotti M., Assessment of the kinematic variability among 12 motion analysis laboratories, Gait & Posture, 29, 3, pp. 398-402, (2009); Hecht S., Arendt E., Training the female athlete, Handbook of sports medicine and science: The female athlete, pp. 1-8, (2014); Hewett T., Myer G., Ford K., Heidt R., Colosimo A., McLean S., van Den Bogert A., Paterno M., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes a prospective study, The American Journal of Sports Medicine, 33, 4, pp. 492-501, (2005); Hopkins W., Spreadsheets for analysis of validity and reliability, Sportscience, 19, (2015); Hopkins W., Schabort E., Hawley J., Reliability of power in physical performance tests, Sports Medicine, 31, 3, pp. 211-234, (2001); Hume P., Keogh J., Reid D., The role of biomechanics in maximising distance and accuracy of golf shots, Sports Medicine, 35, 5, pp. 429-449, (2005); Kristianslund E., Krosshaug T., Comparison of drop jumps and sport-specific sidestep cutting implications for anterior cruciate ligament injury risk screening, The American Journal of Sports Medicine, 41, 3, pp. 684-688, (2013); Krosshaug T., Steffen K., Kristianslund E., Nilstad A., Mok K., Myklebust G., Andersen T., Holme I., Engebretsen L., Bahr R., The vertical drop jump is a poor screening test for ACL injuries in female elite soccer and handball players: A prospective cohort study of 710 athletes, The American Journal of Sports Medicine, 44, 4, pp. 874-883, (2016); Leardini A., Biagi F., Merlo A., Belvedere C., Benedetti M., Multi-segment trunk kinematics during locomotion and elementary exercises, Clinical Biomechanics, 26, 6, pp. 562-571, (2011); Manson S., Brughelli M., Harris N., Physiological characteristics of international female soccer players, The Journal of Strength & Conditioning Research, 28, 2, pp. 308-318, (2014); Mok K., Petushek E., Krosshaug T., Reliability of knee biomechanics during a vertical drop jump in elite female athletes, Gait & Posture, 46, pp. 173-178, (2016); Morgan K., Donnelly C., Reinbolt J., Elevated gastrocnemius forces compensate for decreased hamstrings forces during the weight-acceptance phase of single-leg jump landing: Implications for anterior cruciate ligament injury risk, Journal of Biomechanics, 47, 13, pp. 3295-3302, (2014); Norcross M., Lewek M., Padua D., Shultz S., Weinhold P., Blackburn T., Lower extremity energy absorption and biomechanics during landing, part I: Sagittal-plane energy absorption analyses, Journal of Athletic Training, 48, 6, pp. 748-756, (2013); Portney L., Watkins M., Foundations of clinical research: Applications to practice, (2009); Sankey S., Robinson M., Vanrenterghem J., Whole-body dynamic stability in side cutting: Implications for markers of lower limb injury risk and change of direction performance, Journal of Biomechanics, 104, pp. 1-9, (2020); Smith T., Hopkins W., Variability and predictability of finals times of elite rowers, Medicine & Science in Sports & Exercise, 43, 11, pp. 2155-2160, (2011); Tai W., Wang L., Peng H., Biomechanical comparisons of one-legged and two-legged running vertical jumps, Journal of Human Kinetics, 64, 1, pp. 71-76, (2018); Vicon Nexus user guide, (2020); Walsh M., Boling M., McGrath M., Blackburn T., Padua D., Lower extremity muscle activation and knee flexion during a jump-landing task, Journal of Athletic Training, 47, 4, pp. 406-413, (2012)","B. Jenner; UniSA: Allied Health and Human Performance, University of South Australia, Adelaide, 5001, Australia; email: Brooke.Jenner@mymail.unisa.edu.au","","Churchill Livingstone","1466853X","","PTSHB","36646025","English","Phys. Ther. Sport","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85146342267" "Uslu S.; Özdoǧan E.Ç.","Uslu, Serkan (57188874643); Özdoǧan, Emel Çetin (57200978805)","57188874643; 57200978805","External Focus Reduces Accuracy and Increases Antagonist Muscle Activation in Novice Adolescent Soccer Players","2023","Motor Control","27","2","","228","241","13","1","10.1123/mc.2022-0018","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85151574936&doi=10.1123%2fmc.2022-0018&partnerID=40&md5=57ee91823655438ff066dfe127d7c1fd","Department of Biophysics, Faculty of Medicine, Akdeniz University, Antalya, Turkey; Faculty of Sports Science, Akdeniz University, Antalya, Turkey","Uslu S., Department of Biophysics, Faculty of Medicine, Akdeniz University, Antalya, Turkey; Özdoǧan E.Ç., Faculty of Sports Science, Akdeniz University, Antalya, Turkey","Instep kick is one of the most effective kicking techniques in soccer. Lower extremity muscles and joints play a crucial role during instep kick. However, external (EF) and internal focus and their effect on the muscles are still ambiguous. In this study, 13 male adolescent soccer players were included and aimed to hit the targets in internal and EF conditions. Lower extremity muscle activations were measured with surface electromyography, and kinematics were measured with a high-speed video camera. Muscle activations and movement latencies were analyzed in four different phases (backswing, leg cocking, acceleration, and followthrough) of kicking. While 10 out of 13 participants kicked accurately in internal focus, only five out of 13 in EF kicked accurately.Gastrocnemiusmuscle activations increased significantly in EF in all phases except acceleration. Movement latencies were found 0.07 ± 0.002 s for accurate and 0.05 ± 0.004 s for inaccurate kicks in EF. A correlation has been found between accuracy and movement latency in EF (R = .67). Our results suggest that novices cannot yet coordinate their muscles in EF, cocontraction ratio increases. Therefore, training strategies that aim to reduce the cocontraction ratio can help the athlete increase performance through better motor coordination. Moreover, better motor coordination may be beneficial in preventing injuries (joint stiffness, etc.) caused by increased cocontraction ratio. © 2023 Human Kinetics, Inc.","athletic performance; Electromyography; youth sports","Adolescent; Athletic Performance; Biomechanical Phenomena; Electromyography; Humans; Lower Extremity; Male; Muscle, Skeletal; Soccer; acceleration; accuracy; adolescent; Article; attention; biomechanics; electrophysiological procedures; gastrocnemius muscle; human; human experiment; kinematics; latent period; leg muscle; male; motor coordination; movement (physiology); muscle contraction; soccer player; surface electromyography; athletic performance; electromyography; injury; lower limb; physiology; skeletal muscle; soccer","Barfield W., Zeltzer D., Sheridan T., Slater M., Presence and performance within virtual environments, Virtual environments and advanced interface design, pp. 473-513, (1995); Beilock S.L., Carr T.H., MacMahon C., Starkes J.L., When paying attention becomes counterproductive: Impact of divided versus skill-focused attention on novice and experienced performance of sensorimotor skills, Journal of Experimental Psychology: Applied, 8, 1, pp. 6-16, (2002); 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Uehara L.A., Button C., Davids K., The effects of focus of attention instructions on novices learning soccer chip, Brazilian Journal of Biomotricity, 2, 1, pp. 63-77, (2008); Uslu S., Gurbuz M., Kizilay F., Ozkaynak S., Nuzket T., Uysal H., Amplitude and velocity dependence of patellar pendulum triggered by T reflex in Parkinson's rigidity, Neurological Sciences, 42, 8, pp. 3257-3266, (2021); Uslu S., Nuzket T., Uysal H., Modified motor unit number index (MUNIX) algorithm for assessing excitability of alpha motor neuron in spasticity, Clinical Neurophysiology Practice, 3, pp. 127-133, (2018); Watanabe K., Nunome H., Inoue K., Iga T., Akima H., Electromyographic analysis of hip adductor muscles in soccer instep and side-foot kicking, Sports Biomechanics, 19, 3, pp. 295-306, (2020); Wickstrom R.L., Developmental kinesiology: Maturation of basic motor patterns, Exercise and Sport Sciences Reviews, 3, 1, pp. 163-192, (1975); Williams L., Coincidence timing of a soccer pass: Effects of stimulus velocity and movement distance, Perceptual and Motor Skills, 91, 1, pp. 39-52, (2000); Wulf G., Attentional focus and motor learning: A review of 15 years, International Review of Sport and Exercise Psychology, 6, 1, pp. 77-104, (2013); Wulf G., Dufek J.S., Lozano L., Pettigrew C., Increased jump height and reduced EMG activity with an external focus, Human Movement Science, 29, 3, pp. 440-448, (2010); Wulf G., McConnel N., Gartner M., Schwarz A., Enhancing the learning of sport skills through external-focus feedback, Journal of Motor Behavior, 34, 2, pp. 171-182, (2002); Wulf G., McNevin N., Shea C.H., The automaticity of complex motor skill learning as a function of attentional focus, The Quarterly Journal of Experimental Psychology Section A, 54, 4, pp. 1143-1154, (2001); Wulf G., Su J., External focus of attention enhances golf shot accuracy in beginners and experts, Research Quarterly for Exercise and Sport, 78, 4, pp. 384-389, (2007); Zachry T., Wulf G., Mercer J., Bezodis N., Increased movement accuracy and reduced EMG activity as the result of adopting an external focus of attention, Brain Research Bulletin, 67, 4, pp. 304-309, (2005); Zheng L., Wang H., The effect of different attentional focus on the penalty kicking performance of adolescent male soccer players in different levels, Annals of Applied Sport Science, 8, 4, (2020)","E.Ç. Özdoǧan; Faculty of Sports Science, Akdeniz University, Antalya, Turkey; email: emelcetin@akdeniz.edu.tr","","Human Kinetics Publishers Inc.","10871640","","","36288790","English","Mot. Control","Article","Final","","Scopus","2-s2.0-85151574936" "Śliwowski R.; Paillard T.; Bojkowski Ł.; Dudziński W.; Patek M.; Marynowicz J.","Śliwowski, Robert (37125271100); Paillard, Thierry (6602085082); Bojkowski, Łukasz (57210142718); Dudziński, Witold (7007109971); Patek, Mikołaj (59006751900); Marynowicz, Jakub (57215716683)","37125271100; 6602085082; 57210142718; 7007109971; 59006751900; 57215716683","Intra- and inter-limb strength imbalance and asymmetry in soccer: A comparison of elite senior and junior players","2024","PLoS ONE","19","4","e0302474","","","","0","10.1371/journal.pone.0302474","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85191640289&doi=10.1371%2fjournal.pone.0302474&partnerID=40&md5=7f8e80aaa4fafca32b0dd8398130f7ce","Department of Theory and Methodology of Team Sport Games, Poznan University of Physical Education, Poznan, Poland; Department of Sport Sciences, University of Pau et des Pays de l’Adour, E2S UPPA, MEPS Laboratory, Tarbes, France; Department of Psychology, Poznan University of Physical Education, Poznan, Poland; Rehasport Clinic, FIFA Medical Centre of Excellence, Poznan, Poland","Śliwowski R., Department of Theory and Methodology of Team Sport Games, Poznan University of Physical Education, Poznan, Poland; Paillard T., Department of Sport Sciences, University of Pau et des Pays de l’Adour, E2S UPPA, MEPS Laboratory, Tarbes, France; Bojkowski Ł., Department of Psychology, Poznan University of Physical Education, Poznan, Poland; Dudziński W., Rehasport Clinic, FIFA Medical Centre of Excellence, Poznan, Poland; Patek M., Department of Theory and Methodology of Team Sport Games, Poznan University of Physical Education, Poznan, Poland; Marynowicz J., Department of Theory and Methodology of Team Sport Games, Poznan University of Physical Education, Poznan, Poland","Evaluation of muscle strength imbalance can be an important element in optimizing the training process of soccer players. The purpose of the study was to examine isokinetic peak torque (PT) and total work (TW) exerted by both knee extensors (quadriceps or Q) and flexors (hamstrings or H), intra-limb imbalance and the magnitude and direction of inter-limb asymmetry in top elite senior (n = 109) and junior (n = 74) soccer players. An isokinetic dynamometry was used to measure maximum peak torque of quadriceps (PT-Q) and hamstrings (PT-H) at an angular velocity of 60̊ .s-1, as well as the total work for extensors (TWQ) and flexors (TW-H) at an angular velocity of 240̊ .s-1 in the dominant (DL) and non-dominant leg (NDL) during concentric muscle contraction. Intra-limb imbalance and inter-limb asymmetries were calculated using a standard equation. Statistical analysis using t-test and Mann-Whitney U-test revealed: (a) no differences (p > 0.05) between groups for PT-Q and PT-H, (b) greater strength levels (p < 0.05) for TW-Q and TW-H of senior players than juniors, and (c) no differences (p > 0.05) between groups for intra-limb imbalance and inter-limb asymmetry. Additionally, Pearson’s chi-kwadrat (χ2) analysis showed no differences (p > 0.05) between groups for intra-limb imbalance and inter-limb asymmetry in relation to the’normative’ values accepted in the literature that indicate an increase in the risk of knee injury. This study shows that isokinetic assessment can be an important tool to identify imbalances/asymmetries and to develop strategies to reduce the risk of muscle injury. © 2024 Śliwowski et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.","","Adolescent; Adult; Athletes; Hamstring Muscles; Humans; Male; Muscle Contraction; Muscle Strength; Muscle Strength Dynamometer; Muscle, Skeletal; Quadriceps Muscle; Soccer; Torque; Young Adult; anterior cruciate ligament; Article; biomechanics; body mass; confidence interval; dynamometry; hamstring muscle; human; information processing; knee injury; leg fracture; limb; muscle contraction; muscle injury; muscle strength; rank sum test; soccer; strength; Student t test; torque; adolescent; adult; athlete; comparative study; male; physiology; quadriceps femoris muscle; skeletal muscle; torque; young adult","Stolen T, Chamari K, Castagna C, Wisloff U., Physiology of Soccer, Sports Med Auckl NZ, 35, 6, pp. 501-536, (2005); DeLang MD, Rouissi M, Bragazzi NL, Chamari K, Salamh PA., Soccer Footedness and Between-Limbs Muscle Strength: Systematic Review and Meta-Analysis, Int J Sports Physiol Perform, 14, pp. 551-562, (2019); Coratella G, Beato M, Schena F., Correlation between quadriceps and hamstrings inter-limb strength asymmetry with change of direction and sprint in U21 elite soccer-players, Hum Mov Sci, 59, pp. 81-87, (2018); Maly T, Ford KR, Sugimoto D, Izovska J, Bujnovsky D, Hank M, Et al., Isokinetic Strength, Bilateral and Unilateral Strength Differences: Variation by Age and Laterality in Elite Youth Football Players, Int J Morphol, 39, pp. 260-267, (2021); Maly T, Zahalka F, Mala L., Muscular Strength and Strength Asymmetries in Elite and Sub-Elite Professional Soccer Players, Sport Sci, 7, 1, pp. 26-33, (2014); Coratella G, Beato M, Schena F., The specificity of the Loughborough Intermittent Shuttle Test for recreational soccer players is independent of their intermittent running ability, Res Sports Med, 24, 4, pp. 363-374, (2016); Lord C, Blazevich AJ, Abbiss CR, Drinkwater EJ, Ma'ayah F., Comparing Maximal Mean and Critical Speed and Metabolic Powers in Elite and Sub-elite Soccer, Int J Sports Med, 41, pp. 219-226, (2020); Allen T, Taberner M, Zhilkin M, Rhodes D., Running more than before? 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Sports Sci Med, 9, pp. 364-373, (2010); Pardos-Mainer E, Bishop C, Gonzalo-Skok O, Nobari H, Perez-Gomez J, Lozano D., Associations between Inter-Limb Asymmetries in Jump and Change of Direction Speed Tests and Physical Performance in Adolescent Female Soccer Players, Int J Environ Res Public Health, 18, (2021); Kyritsis P, Bahr R, Landreau P, Miladi R, Witvrouw E., Likelihood of ACL graft rupture: not meeting six clinical discharge criteria before return to sport is associated with a four times greater risk of rupture, Br J Sports Med, 50, pp. 946-951, (2016); Hart NH, Nimphius S, Weber J, Spiteri T, Rantalainen T, Dobbin M, Et al., Musculoskeletal Asymmetry in Football Athletes: A Product of Limb Function over Time, Med Sci Sports Exerc, 48, (2016); Parpa K, Michaelides M., Anterior-Posterior and Inter-Limb Lower Body Strength Asymmetry in Soccer, Basketball, Futsal, and Volleyball Players, Medicina, 58, (2022); Kalata M, Hank M, Bujnovsky D, Michalek J, Varjan M, Kunzmann E, Et al., Bilateral Strength Asymmetry in Elite Youth Soccer Players: Differences between Age Categories, Symmetry, 13, (2021); Read PJ, Oliver JL, De Ste Croix MBA, Myer GD, Lloyd RS., A prospective investigation to evaluate risk factors for lower extremity injury risk in male youth soccer players, Scand J Med Sci Sports, 28, pp. 1244-1251, (2018); Philippaerts RM, Vaeyens R, Janssens M, Van Renterghem B, Matthys D, Craen R, Et al., The relationship between peak height velocity and physical performance in youth soccer players, J Sports Sci, 24, pp. 221-230, (2006); Kellis S, Gerodimos V, Kellis E, Manou V., Bilateral isokinetic concentric and eccentric strength profiles of the knee extensors and flexors in young soccer players, Isokinet Exerc Sci, 9, pp. 31-39, (2001); Beato M, Fleming A, Coates A, Dello Iacono A., Validity and reliability of a flywheel squat test in sport, J Sports Sci, 39, 5, pp. 482-488, (2021); Daneshjoo A, Rahnama N, Mokhtar AH, Yusof A., Bilateral and unilateral asymmetries of isokinetic strength and flexibility in male young professional soccer players, J Hum Kinet, 36, 1, pp. 45-53, (2013); Denadai BS, De Oliveira FBD, Camarda SRDA, Ribeiro L, Greco CC., Hamstrings-to-quadriceps strength and size ratios of male professional soccer players with muscle imbalance, Clin Physiol Funct I, 36, 2, pp. 159-164, (2016); Rahnama N, Lees A, Bambaecichi E., A comparison of muscle strength and flexibility between the preferred and non-preferred leg in English soccer players, Ergonomics, 48, pp. 1568-1575, (2005); Minozzo F, Lopez P, Machado CLF, Wilhelm EN, Grazioli R, Pinto RS., Alternative assessment of knee joint muscle balance of soccer players through total work-based hamstring: quadriceps ratios, Eur J Sport Sci, 18, pp. 1398-1404, (2018); Dauty M, Potiron-Josse M, Rochcongar P., Identification of previous hamstring muscle injury by isokinetic concentric and eccentric torque measurement in elite soccer player, Isokinet Exerc Sci, 11, pp. 139-144, (2003); Ribeiro-Alvares JB, Dornelles MP, Fritsch CG, Lima-e-Silva FX, Medeiros TM, Severo-Silveira L, Et al., Prevalence of Hamstring Strain Injury Risk Factors in Professional and Under-20 Male Football (Soccer) Players, J Sport Rehabil, 29, pp. 339-345, (2020); Peek K, Gatherer D, Bennett KJM, Fransen J, Watsford M., Muscle strength characteristics of the hamstrings and quadriceps in players from a high-level youth football (soccer) Academy, Res Sports Med, 26, pp. 276-288, (2018); Lakens D., Calculating and reporting effect sizes to facilitate cumulative science: a practical primer for t-tests and ANOVAs, Front Psychol, 4, (2013); Eustace SJ, Page RM, Greig M., Angle-Specific Isokinetic Metrics Highlight Strength Training Needs of Elite Youth Soccer Players, J Strength Cond Res, 34, pp. 3258-3265, (2020); Beato M, Young D, Stiff A, Coratella G., Lower-Limb Muscle Strength, Anterior-Posterior and Inter-Limb Asymmetry in Professional, Elite Academy and Amateur Soccer Players, J Hum Kinet, 77, pp. 135-146, (2021); Torres-Banduc MA, Jerez-Mayorga D, Ojeda AH, Bishop C, Ramirez-Campillo R., Age-dependent Knee Joint Isokinetic Profile in Professional Male Soccer Players, Int J Kinesiol Sports Sci, 10, pp. 16-24, (2022); Coppalle S, Rave G, Moran J, Salhi I, Abderrahman AB, Zouita S, Et al., Internal and External Training Load in Under-19 versus Professional Soccer Players during the In-Season Period, Int J Environ Res Public Health, 18, (2021); Hannon MP, Coleman NM, Parker LJF, McKeown J, Unnithan VB, Close GL, Et al., Seasonal training and match load and micro-cycle periodization in male Premier League academy soccer players, J Sports Sci, 39, pp. 1838-1849, (2021); Herdy C, Costa P, Simao R, Selfe J., Physiological Profile of Brazilian Elite Soccer Players: Comparison between U-17, U-20 and professionals, J Anthr Sport Phis Educ, 2, pp. 43-47, (2018)","R. Śliwowski; Department of Theory and Methodology of Team Sport Games, Poznan University of Physical Education, Poznan, Poland; email: sliwowski@awf.poznan.pl","","Public Library of Science","19326203","","POLNC","38669272","English","PLoS ONE","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85191640289" "Mausehund L.; Krosshaug T.","Mausehund, Lasse (57209978230); Krosshaug, Tron (55888189500)","57209978230; 55888189500","Knee Biomechanics During Cutting Maneuvers and Secondary ACL Injury Risk: A Prospective Cohort Study of Knee Biomechanics in 756 Female Elite Handball and Soccer Players","2024","American Journal of Sports Medicine","52","5","","1209","1219","10","1","10.1177/03635465241234255","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85186935052&doi=10.1177%2f03635465241234255&partnerID=40&md5=f6263be32ca61a927a2eb0d227e6d354","Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway","Mausehund L., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway; Krosshaug T., Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway","Background: An athlete who returns to sport after an anterior cruciate ligament (ACL) injury has a substantially high risk of sustaining a new secondary ACL injury. Because ACL injuries most frequently occur during cutting maneuvers, such movements should be at the center of research attention. Purpose: To investigate whether knee biomechanical parameters during side-step cutting maneuvers differ between female elite athletes with and without a history of ACL injury and to evaluate whether such parameters are associated with future secondary ACL injury. Study Design: Cohort study; Level of evidence, 2. Methods: A total of 756 female elite handball and soccer players, of whom 76 had a history of ACL injury, performed a sport-specific cutting task while 3-dimensional kinematics and kinetics were measured. ACL injuries were registered prospectively over an 8-year follow-up period. Seven knee-specific biomechanical variables were the basis for all analyses. Two-way analyses of variance were applied to assess group differences, whereas logistic regression models served to evaluate associations between the knee-specific variables and future secondary ACL injury. Results: When players with a previous ACL injury performed the cutting maneuver with their ipsilateral leg, they exhibited lower knee abduction angles (mean difference [MD], 1.4°-1.5°; 95% CI, 0.2°-2.9°), lower peak knee flexion moments (MD, 0.33 N·m/kg-1; 95% CI, 0.18-0.48 N·m/kg-1), lower peak knee abduction moments (MD, 0.27 N·m/kg-1; 95% CI, 0.12-0.41 N·m/kg-1), and lower peak knee internal rotation moments (MD, 0.06 N·m/kg-1; 95% CI, 0.01-0.12 N·m/kg-1) compared with injury-free players. When players performed the cut with their contralateral leg, no differences were evident (P <.05). None of the 7 knee-specific biomechanical variables was associated with future secondary ACL injury in players with an ACL injury history (P <.05). Conclusion: Approximately 4 years after ACL injury, female elite team-ball athletes still unloaded their ipsilateral knee during cutting maneuvers, yet contralateral knee loading was similar to that of injury-free players. Knee biomechanical characteristics were not associated with future secondary ACL injury. © 2024 The Author(s).","anterior cruciate ligament; football; kinematics; kinetics; reconstruction; reinjury; return to sport","Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Cohort Studies; Female; Humans; Knee Joint; Prospective Studies; Soccer; anterior cruciate ligament injury; biomechanics; cohort analysis; female; human; knee; prospective study; soccer","Alentorn-Geli E., Myer G.D., Silvers H.J., Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players, part 1: mechanisms of injury and underlying risk factors, Knee Surg Sports Traumatol Arthrosc, 17, 7, pp. 705-729, (2009); Bahr R., Krosshaug T., Understanding injury mechanisms: a key component of preventing injuries in sport, Br J Sports Med, 39, 6, (2005); Bell A.L., Pedersen D.R., Brand R.A., A comparison of the accuracy of several hip center location prediction methods, J Biomech, 23, 6, pp. 617-621, (1990); Bush-Joseph C.A., Hurwitz D.E., Patel R.R., Et al., Dynamic function after anterior cruciate ligament reconstruction with autologous patellar tendon, Am J Sports Med, 29, 1, pp. 36-41, (2001); Cronstrom A., Tengman E., Hager C.K., Return to sports: a risky business? 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Biological and functional considerations, Sports Med, 47, 2, pp. 221-232, (2017); Nilstad A., Petushek E., Mok K.M., Bahr R., Krosshaug T., Kiss goodbye to the “kissing knees”: no association between frontal plane inward knee motion and risk of future non-contact ACL injury in elite female athletes, Sports Biomech, 22, 1, pp. 65-79, (2023); Oberlander K.D., Bruggemann G.P., Hoher J., Karamanidis K., Altered landing mechanics in ACL-reconstructed patients, Med Sci Sports Exerc, 45, 3, pp. 506-513, (2013); Pairot-de-Fontenay B., Willy R.W., Elias A.R.C., Mizner R.L., Dube M.O., Roy J.S., Running biomechanics in individuals with anterior cruciate ligament reconstruction: a systematic review, Sports Med, 49, 9, pp. 1411-1424, (2019); Patel A.D., Bullock G.S., Wrigley J., Paterno M.V., Sell T.C., Losciale J.M., Does sex affect second ACL injury risk? A systematic review with meta-analysis, Br J Sports Med, 55, 15, (2021); Paterno M.V., Ford K.R., Myer G.D., Heyl R., Hewett T.E., Limb asymmetries in landing and jumping 2 years following anterior cruciate ligament reconstruction, Clin J Sport Med, 17, 4, pp. 258-262, (2007); Paterno M.V., Rauh M.J., Schmitt L.C., Ford K.R., Hewett T.E., Incidence of second ACL injuries 2 years after primary ACL reconstruction and return to sport, Am J Sports Med, 42, 7, pp. 1567-1573, (2014); Paterno M.V., Schmitt L.C., Ford K.R., Et al., Biomechanical measures during landing and postural stability predict second anterior cruciate ligament injury after anterior cruciate ligament reconstruction and return to sport, Am J Sports Med, 38, 10, pp. 1968-1978, (2010); Petushek E., Nilstad A., Bahr R., Krosshaug T., Drop jump? Single-leg squat? Not if you aim to predict anterior cruciate ligament injury from real-time clinical assessment: a prospective cohort study involving 880 elite female athletes, J Orthop Sports Phys Ther, 51, 7, pp. 372-378, (2021); Pollard C.D., Stearns K.M., Hayes A.T., Heiderscheit B.C., Altered lower extremity movement variability in female soccer players during side-step cutting after anterior cruciate ligament reconstruction, Am J Sports Med, 43, 2, pp. 460-465, (2015); Poston G.R., Schmitt L.C., Ithurburn M.P., Hugentobler J.A., Thomas S., Paterno M.V., Reduced 2-D frontal plane motion during single-limb landing is associated with risk of future anterior cruciate ligament graft rupture after anterior cruciate ligament reconstruction and return to sport: a pilot study, J Orthop Sports Phys Ther, 51, 2, pp. 82-87, (2021); Ranganathan P., Pramesh C.S., Aggarwal R., Common pitfalls in statistical analysis: logistic regression, Perspect Clin Res, 8, 3, pp. 148-151, (2017); Schmitt L.C., Paterno M.V., Ford K.R., Myer G.D., Hewett T.E., Strength asymmetry and landing mechanics at return to sport after anterior cruciate ligament reconstruction, Med Sci Sports Exerc, 47, 7, pp. 1426-1434, (2015); Stearns K.M., Pollard C.D., Abnormal frontal plane knee mechanics during sidestep cutting in female soccer athletes after anterior cruciate ligament reconstruction and return to sport, Am J Sports Med, 41, 4, pp. 918-923, (2013); Steffen K., Nilstad A., Kristianslund E.K., Myklebust G., Bahr R., Krosshaug T., Association between lower extremity muscle strength and noncontact ACL injuries, Med Sci Sports Exerc, 48, 11, pp. 2082-2089, (2016); Wiggins A.J., Grandhi R.K., Schneider D.K., Stanfield D., Webster K.E., Myer G.D., Risk of secondary injury in younger athletes after anterior cruciate ligament reconstruction: a systematic review and meta-analysis, Am J Sports Med, 44, 7, pp. 1861-1876, (2016)","L. Mausehund; Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway; email: lasse.mausehund@gmail.com","","SAGE Publications Inc.","03635465","","AJSMD","38459717","English","Am. J. Sports Med.","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85186935052" "Ferraro S.L.; Batty M.; Heyworth B.E.; Cook D.L.; Miller P.E.; Novais E.N.","Ferraro, Samantha L. (57776246400); Batty, Miles (57208203777); Heyworth, Benton E. (6603567526); Cook, Danielle L. (57222038229); Miller, Patricia E. (55656975700); Novais, Eduardo N. (13004149000)","57776246400; 57208203777; 6603567526; 57222038229; 55656975700; 13004149000","Acute Pelvic and Hip Apophyseal Avulsion Fractures in Adolescents: A Summary of 719 Cases","2023","Journal of Pediatric Orthopaedics","43","4","","204","210","6","1","10.1097/BPO.0000000000002355","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85149795256&doi=10.1097%2fBPO.0000000000002355&partnerID=40&md5=c7432775aedff0c194f832dbeec99d08","Department of Orthopaedic Surgery, Boston Children's Hospital, Boston, MA, United States","Ferraro S.L., Department of Orthopaedic Surgery, Boston Children's Hospital, Boston, MA, United States; Batty M., Department of Orthopaedic Surgery, Boston Children's Hospital, Boston, MA, United States; Heyworth B.E., Department of Orthopaedic Surgery, Boston Children's Hospital, Boston, MA, United States; Cook D.L., Department of Orthopaedic Surgery, Boston Children's Hospital, Boston, MA, United States; Miller P.E., Department of Orthopaedic Surgery, Boston Children's Hospital, Boston, MA, United States; Novais E.N., Department of Orthopaedic Surgery, Boston Children's Hospital, Boston, MA, United States","Background: Apophyseal avulsion fractures of the pelvis and hip are common injuries in adolescent athletes. However, high volume comparative studies elucidating the spectrum of injuries are largely absent from the literature. The current study provides a comprehensive analysis of demographic, anatomic, pathophysiological, clinical, and athletic-related variables associated with such injuries in an extensive population of affected adolescents. Methods: A retrospective review was performed of records of patients presenting to a single tertiary care pediatric hospital between January 1, 2005, and July 31, 2020, collecting variables including patient sex, age, body mass index, fracture location, injury mechanism, sport at the time of injury, and duration of prodromal symptoms. Results: Seven hundred nineteen fractures were identified in 709 patients. The average patient age was 14.6, and 78% of the fractures occurred in male patients. The anterior inferior iliac spine (33.4%), anterior superior iliac spine (30.5%), and ischial tuberosity (19.4%) were the most common fracture sites. The most common injury mechanisms were running (27.8%), kicking (26.7%), and falls (8.8%). The most common sports at the time of injury were soccer (38.1%), football (11.2%), and baseball (10.5%). Fracture site was significantly associated with patient sex, age, body mass index, laterality, mechanism, sport, time from injury, and presence of prodromal symptoms. The annual volume of pelvic avulsion fractures treated at the institution increased significantly from n=17 in 2005 to n=75 in 2019. Conclusions: Adolescent pelvic and hip avulsion fractures occur during a narrow window of age and skeletal maturation and are frequently sustained during sporting activities. Each fracture location is associated with certain demographic, mechanistic, and patient-specific characteristics. The associations between fracture site and patient-specific or injury-specific variables offer insights into the pathophysiology and possible underlying biomechanical risk factors that contribute to these injuries. © 2023 Wolters Kluwer Health, Inc. All rights reserved.","adolescent; apophysitis; avulsion fracture; hip; pelvis","Adolescent; Athletic Injuries; Child; Fractures, Avulsion; Fractures, Bone; Hip Fractures; Humans; Ischium; Male; Pelvis; Prodromal Symptoms; Retrospective Studies; adolescent; age; anatomical concepts; Article; biomechanics; body mass; clinical feature; cohort analysis; controlled study; disease association; disease duration; female; hip apophyseal avulsion fracture; hip fracture; human; ilium fracture; incidence; major clinical study; male; medical record review; pathophysiology; pelvis fracture; prodromal symptom; retrospective study; risk factor; sex; sport; avulsion fracture; child; complication; fracture; injury; ischium; pelvis; sport injury","Yeager K.C., Silva S.R., Richter D.L., Pelvic Avulsion Injuries in the Adolescent Athlete, Clin Sports Med., 40, pp. 375-384, (2021); 2018-19 High School Athletics Participation Survey, (2022); Fernbach S.K., Wilkinson R.H., Avulsion injuries of the pelvis and proximal femur, AJR Am J Roentgenol., 137, pp. 581-584, (1981); Metzmaker J.N., Pappas A.M., Avulsion fractures of the pelvis, Am J Sports Med., 13, pp. 349-1e23, (1985); Sundar M., Carty H., Avulsion fractures of the pelvis in children: A report of 32 fractures and their outcome, Skeletal Radiol., 23, pp. 85-90, (1994); Moeller J.L., Galasso L., Pelvic region avulsion fractures in adolescent athletes: A series of 242 cases, Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine., 32, pp. e23-e29, (2020); Rossi F., Dragoni S., Acute avulsion fractures of the pelvis in adolescent competitive athletes: prevalence, location and sports distribution of 203 cases collected, Skeletal Radiol., 30, pp. 127-131, (2001); Schuett D.J., Bomar J.D., Pennock A.T., Pelvic apophyseal avulsion fractures: A retrospective review of 228 cases, J Pediatr Orthop., 35, pp. 617-623, (2015); Malina R.M., Pena Reyes M.E., Eisenmann J.C., Et al., Height, mass and skeletal maturity of elite Portuguese soccer players aged 11-16 years, J Sports Sci., 18, pp. 685-693, (2000); Parvaresh K.C., Upasani V.V., Bomar J.D., Et al., Secondary ossification center appearance and closure in the pelvis and proximal femur, J Pediatr Orthop., 38, pp. 418-423, (2018); McCoy J.S., Nelson R., Avulsion Fractures [Updated 2021 Nov 13] In: StatPearls [Internet], (2022); Bell D.R., Post E.G., Trigsted S.M., Et al., Prevalence of sport specialization in high school athletics: A 1-year observational study, Am J Sports Med., 44, pp. 1469-1474, (2016); Buckley P.S., Bishop M., Kane P., Et al., Early single-sport specialization: A survey of 3090 high school, collegiate, and professional athletes, Orthop J Sports Med., 5, (2017); Fabricant P.D., Lakomkin N., Sugimoto D., Et al., Youth sports specialization and musculoskeletal injury: A systematic review of the literature, Phys Sportsmed., 44, pp. 257-262, (2016); Jones S.J., Lyons R.A., Sibert J., Et al., Changes in sports injuries to children between 1983 and 1998: comparison of case series, J Public Health Med., 23, pp. 268-271, (2001); Cook P.C., Leit M.E., Issues in the pediatric athlete, Orthop Clin North Am., 26, pp. 453-464, (1995); Ahlquist S., Cash B.M., Hame S.L., Associations of early sport specialization and high training volume with injury rates in National Collegiate Athletic Association Division I Athletes, Orthop J Sports Med., 8, (2020); Watson A., Mjaanes J.M., COUNCIL ON SPORTS MEDICINE AND FITNESS. Soccer Injuries in Children and Adolescents, Pediatrics., 144, (2019); Smith N.A., Chounthirath T., Xiang H., Soccer-related injuries treated in Emergency Departments: 1990-2014, Pediatrics., 138, (2016); Sanyaolu A., Okorie C., Qi X., Et al., Childhood and Adolescent Obesity in the United States: A Public Health Concern, Glob Pediatr Health., 6, (2019); Packheiser J., Schmitz J., Berretz G., Et al., Four meta-analyses across 164 studies on atypical footedness prevalence and its relation to handedness, Sci Rep., 10, (2020); Haber D.B., Tepolt F.A., McClincy M.P., Et al., Tibial tubercle fractures in children and adolescents: A large retrospective case series, J Pediatr Orthop B., 30, pp. 13-18, (2021); Sheppard E.D., Ramamurti P., Stake S., Et al., Posterior tibial slope is increased in patients with tibial tubercle fractures and Osgood-Schlatter disease, J Pediatr Orthop., 41, pp. e411-e416, (2021); Larson C.M., Kelly B.T., Stone R.M., Making a case for anterior inferior iliac spine/subspine hip impingement: Three representative case reports and proposed concept, Arthroscopy., 27, pp. 1732-1737, (2011); Novais E.N., Riederer M.F., Provance A.J., Anterior inferior iliac spine deformity as a cause for extra-articular hip impingement in young athletes after an avulsion fracture: A case report, Sports Health., 10, pp. 272-276, (2018); Matsuda D.K., Calipusan C.P., Adolescent femoroacetabular impingement from malunion of the anteroinferior iliac spine apophysis treated with arthroscopic spinoplasty, Orthopedics., 35, pp. e460-e463, (2012)","E.N. Novais; Boston Children's Hospital, Boston, 300 Longwood Ave, 02115, United States; email: eduardo.novais@childrens.harvard.edu","","Lippincott Williams and Wilkins","02716798","","JPORD","36727766","English","J. Pediatr. Orthop.","Article","Final","","Scopus","2-s2.0-85149795256" "Steiger C.N.; Ceroni D.","Steiger, Christina N. (57194692973); Ceroni, Dimitri (6701540047)","57194692973; 6701540047","Mechanism and predisposing factors for proximal tibial epiphysiolysis in adolescents during sports activities","2019","International Orthopaedics","43","6","","1395","1403","8","1","10.1007/s00264-018-4168-4","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054101934&doi=10.1007%2fs00264-018-4168-4&partnerID=40&md5=d3915d04633a5770cbaa63185abddec7","Département de l’enfant et de l’adolescent, Service d’orthopédie pédiatrique, Hôpitaux Universitaires de Genève, Rue Willy Donzé 6, Genève, 1205, Switzerland","Steiger C.N., Département de l’enfant et de l’adolescent, Service d’orthopédie pédiatrique, Hôpitaux Universitaires de Genève, Rue Willy Donzé 6, Genève, 1205, Switzerland; Ceroni D., Département de l’enfant et de l’adolescent, Service d’orthopédie pédiatrique, Hôpitaux Universitaires de Genève, Rue Willy Donzé 6, Genève, 1205, Switzerland","Background: Proximal tibial epiphysiolysis (PTE) can have debilitating consequences for young athletes. The mechanism and predisposing factors for this lesion have yet to be determined. To find a common denominator and a biomechanical explanation for PTE, we were using a retrospective analysis of 15 cases in combination with a systematic review of literature. Methods: A retrospective review of medical charts was performed to identify all PTE between 2003 and 2012. Records were screened for patient age and gender, sports activity, mechanism of injury, and treatment protocols. Additionally, a literature review (MEDLINE/PubMed database, the Cochrane Library, online search engines) was conducted. Results: Medical charts of 14 adolescents (15 Salter-Harris I and II fractures) were analyzed. The literature review revealed additional 75 fractures. The predominant mechanisms were landing from a jump, takeoff for a jump, stop and go movements, and eccentric muscle contraction with the knee in flexion. The main sports-activities implicated in these injuries were basketball. Conclusions: Landing from a jump with a decreased knee and hip flexion movement increases tensile forces on the proximal tibia epiphysis. During physiological epiphysiodesis, the growth plate displays an increased vulnerability and such increased tensile forces can lead to a growth plate failure. Neuromuscular fatigue can alter coordination and proprioceptive accuracy during landing from a vertical jump and thus perturbs sagittal shock absorption. In our opinion, trainers should instruct young athletes in techniques that help avoiding uncontrolled high impact landings. Level of evidence: Level IV. © 2018, SICOT aisbl.","Adolescent; Atypical physeal fracture; Growth fracture; Low-energy fracture; Physeal sports injury; Proximal tibial epiphysiolysis","Adolescent; Anterior Cruciate Ligament Injuries; Athletes; Athletic Injuries; Biomechanical Phenomena; Epiphyses, Slipped; Female; Humans; Knee; Knee Joint; Male; Movement; Retrospective Studies; Tibia; adolescent; adolescent disease; Article; basketball; biomechanics; child; clinical article; Cochrane Library; disease predisposition; eccentric muscle contraction; epiphysiolysis; football; human; jumping; knee function; male; medical record review; Medline; muscle contracture; priority journal; proximal tibial epiphysiolysis; retrospective study; search engine; soccer; sport; sport injury; anterior cruciate ligament injury; athlete; female; knee; movement (physiology); physiology; sport injury; tibia","Kraus R., Ploss C., Staub L., Lieber J., Alt V., Weinberg A., Worel A., Schneidmuller D., Roder C., Fractures of long bones in children and adolescents, Osteosynthesis Trauma Care, 14, pp. 39-44, (2006); Hertel P., Results of surgical treatment of eminentia tears of the knee joint in childhood. 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Proposed mechanism of injury and classification, Acta Orthop Scand, 74, 6, pp. 764-765, (2003); Fung B.K.K., Avulsion fracture of the tibial tubercle and proximal tibial physis, Hong Kong J Orthop Surg, 5, 1, pp. 70-73, (2001); Omar M., Petri M., Ettinger M., Decker S., Krettek C., Gaulke R., Simultaneous bilateral transitional fractures of the proximal tibia after minor sports trauma, Case Rep Orthop, 2013, (2013); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Sell T.C., Ferris C.M., Abt J.P., Tsai Y.S., Myers J.B., Fu F.H., Lephart S.M., Predictors of proximal tibia anterior shear force during a vertical stop-jump, J Orthop Res, 25, 12, pp. 1589-1597, (2007); Yu B., Herman D., Preston J., Lu W., Kirkendall D.T., Garrett W.E., Immediate effects of a knee brace with a constraint to knee extension on knee kinematics and ground reaction forces in a stop-jump task, Am J Sports Med, 32, 5, pp. 1136-1143, (2004); Lees A., Methods of impact absorption when landing from a jump, Eng Med, 10, pp. 207-211, (1981); Prentice W., Voight M., Impaired muscle performance: regaining muscular strength and endurance, Techniques in Muscoloskeletal Rehabilitation, (2001); Devita P., Skelly W.A., Effect of landing stiffness on joint kinetics and energetics in the lower extremity, Med Sci Sports Exerc, 24, 1, pp. 108-115, (1992); Hewett T.E., Stroupe A.L., Nance T.A., Noyes F.R., Plyometric training in female athletes. 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Steiger; Département de l’enfant et de l’adolescent, Service d’orthopédie pédiatrique, Hôpitaux Universitaires de Genève, Genève, Rue Willy Donzé 6, 1205, Switzerland; email: steiger_christina@yahoo.de","","Springer Verlag","03412695","","IORTD","30267244","English","Int. Orthop.","Article","Final","","Scopus","2-s2.0-85054101934" "Dos'Santos T.; Evans D.T.; Read D.B.","Dos'Santos, Thomas (57170712800); Evans, Daniel T. (59143011000); Read, Dale B. (57095473900)","57170712800; 59143011000; 57095473900","Validity of the Hawkin Dynamics Wireless Dual Force Platform System Against a Piezoelectric Laboratory Grade System for Vertical Countermovement Jump Variables","2024","Journal of Strength and Conditioning Research","38","6","","1144","1148","4","0","10.1519/JSC.0000000000004785","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85194127435&doi=10.1519%2fJSC.0000000000004785&partnerID=40&md5=d3db6b27e28fb47af400284cc51a34ce","Department of Sport and Exercise Sciences, Manchester Institute of Sport, Manchester Metropolitan University, Manchester, United Kingdom","Dos'Santos T., Department of Sport and Exercise Sciences, Manchester Institute of Sport, Manchester Metropolitan University, Manchester, United Kingdom; Evans D.T., Department of Sport and Exercise Sciences, Manchester Institute of Sport, Manchester Metropolitan University, Manchester, United Kingdom; Read D.B., Department of Sport and Exercise Sciences, Manchester Institute of Sport, Manchester Metropolitan University, Manchester, United Kingdom","Dos'Santos, T, Evans, DT, and Read, DB. Validity of the Hawkin dynamics wireless dual force platform system against a piezoelectric laboratory grade system for vertical countermovement jump variables. J Strength Cond Res 38(6): 1144-1148, 2024 - The aim of this study was to determine the criterion validity of the Hawkin Dynamics (HD) wireless dual force platform system for assessing vertical countermovement jump (CMJ) variables, compared with those derived from a Kistler piezoelectric laboratory grade force platform system. During a single testing session, HD force platforms were placed directly on top of 2 adjacent Kistler force platforms to simultaneously collect vertical ground reaction forces produced by 2 male recreational soccer players (age: 29.0 ± 2.8 years, height: 1.79 ± 0.01 m, mass: 85.6 ± 4.7 kg) that performed 25 vertical CMJs each. Sixteen vertical CMJ variables pertaining to jump height (JH), flight time (FT), time-to-take off (TTT), countermovement depth, body weight (BW), propulsive and braking mean, and peak powers, forces, and impulses were compared between systems. Fixed bias was observed for 6 of 16 variables (peak and mean braking power, mean propulsion force, TTT, FT, and BW), while proportional bias was present for 10 of 16 variables (peak and mean propulsive and braking force, TTT, FT, peak and mean braking power, mean propulsive power, and BW). For all variables regardless of fixed or proportional bias, percentage differences were ≤3.4% between force platform systems, with near perfect to perfect correlations (r or ρ = 0.977-1.000) observed for 15 of 16 variables. The HD dual wireless force platform system can be considered a valid alternative to a piezoelectric laboratory grade force platform system for the collection of vertical CMJ variables, particularly outcome (i.e., JH, reactive strength index modified) and strategy variables (countermovement depth). © 2024 NSCA National Strength and Conditioning Association. All rights reserved.","agreement; force-time; kinematic; kinetic","Adult; Athletic Performance; Biomechanical Phenomena; Exercise Test; Humans; Male; Muscle Strength; Plyometric Exercise; Reproducibility of Results; Soccer; Wireless Technology; adult; article; body weight; controlled study; criterion related validity; device comparison; dynamics; force; ground reaction force; human; human experiment; kinetics; male; normal human; soccer player; validity; athletic performance; biomechanics; devices; exercise test; muscle strength; physiology; plyometrics; reproducibility; soccer; wireless communication","Badby A.J., Mundy P.D., Comfort P., Lake J.P., McMahon J.J., The validity of Hawkin Dynamics wireless dual force plates for measuring countermovement jump and drop jump variables, Sensors, 23, (2023); Bansal D., Potential of piezoelectric sensors in bio-signal acquisition, Sensors & Transducers, 136, (2012); Bishop C., Jordan M., Torres-Ronda L., Et al., Selecting metrics that matter: Comparing the use of the countermovement jump for performance profiling, neuromuscular fatigue monitoring, and injury rehabilitation testing, Strength Cond J, 45, pp. 545-553, (2023); Bland J.M., Altman D., Statistical methods for assessing agreement between two methods of clinical measurement, Lancet (London, Engl, 1, pp. 307-310, (1986); Chavda S., Bromley T., Jarvis P., Et al., Force-time characteristics of the countermovement jump: Analyzing the curve in Excel, Strength Cond J, 40, pp. 67-77, (2018); Cole T.J., Altman D.G., Statistics Notes: What is a percentage difference?, BMJ, 358, (2017); Crowder G.E., Pexa B., Ford K., Waxman J., The Validation of A Portable Dual-force Plate System for Assessing Countermovement Jump Performance, (2020); Hopkins W.G., A Scale of Magnitudes for Effect Statistics. A New View of Statistics, (2002); Jidovtseff B., Quievre J., Harris N.K., Cronin J., Influence of jumping strategy on kinetic and kinematic variables, J Sports Med Phys Fitness, 54, pp. 129-138, (2014); Ludbrook J., Comparing methods of measurements, Clin Experimental Pharmacology Physiology, 24, pp. 193-203, (1997); McGuigan M., Monitoring Training and Performance in Athletes, (2017); McMahon J.J., Suchomel T.J., Lake J.P., Comfort P., Understanding the key phases of the countermovement jump force-time curve, Strength Cond J, 40, pp. 96-106, (2018); Owen N.J., Watkins J., Kilduff L.P., Bevan H.R., Bennett M.A., Development of a criterion method to determine peak mechanical power output in a countermovement jump, J Strength Cond Res, 28, pp. 1552-1558, (2014); Spencer R., Sindall P., Hammond K.M., Atkins S.J., Quinn M., McMahon J.J., Changes in body mass and movement strategy maintain jump height immediately after soccer match, Appl Sci, 13, (2023); Stratford C., Dos'Santos T., McMahon J.J., The 10/5 repeated jumps test: Are 10 repetitions and three trials necessary?, Biomechanics, 1, pp. 1-14, (2020); Werner J.M., Engelmann M., Schmidt M., Titsch C., Dix M., Drossel W.-G., Comparison of structural integrated piezoceramics, piezoelectric patches and strain gauges for condition monitoring, Sensors, 22, (2022)","T. Dos'santos; Department of Sport and Exercise Sciences, Manchester Institute of Sport, Manchester Metropolitan University, Manchester, United Kingdom; email: t.dossantos@mmu.ac.uk","","NSCA National Strength and Conditioning Association","10648011","","","38781471","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-85194127435" "Wong C.-C.; Cheng C.-T.; Huang K.-H.; Yang Y.-T.; Hu Y.-Y.; Chan H.-M.; Chen H.-C.","Wong, Ching-Chang (7404953618); Cheng, Chi-Tai (7404796792); Huang, Kai-Hsiang (24721117800); Yang, Yu-Ting (36705522600); Hu, Yueh-Yang (25925794600); Chan, Hsiang-Min (24721314200); Chen, Hao-Che (35279425200)","7404953618; 7404796792; 24721117800; 36705522600; 25925794600; 24721314200; 35279425200","Humanoid soccer robot: TWNHR-IV","2008","Journal of Harbin Institute of Technology (New Series)","15","SUPPL. 2","","27","30","3","1","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-57749104091&partnerID=40&md5=652699d4c0d2391f9d1cb9d782a0b82b","Department of Electrical Engineering, Tamkang University Tamsui, Taipei 25137, Taiwan","Wong C.-C., Department of Electrical Engineering, Tamkang University Tamsui, Taipei 25137, Taiwan; Cheng C.-T., Department of Electrical Engineering, Tamkang University Tamsui, Taipei 25137, Taiwan; Huang K.-H., Department of Electrical Engineering, Tamkang University Tamsui, Taipei 25137, Taiwan; Yang Y.-T., Department of Electrical Engineering, Tamkang University Tamsui, Taipei 25137, Taiwan; Hu Y.-Y., Department of Electrical Engineering, Tamkang University Tamsui, Taipei 25137, Taiwan; Chan H.-M., Department of Electrical Engineering, Tamkang University Tamsui, Taipei 25137, Taiwan; Chen H.-C., Department of Electrical Engineering, Tamkang University Tamsui, Taipei 25137, Taiwan","A humanoid soccer robot named TWNHR-IV and designed by the TKU team to attend the HuroSot League of FIRA RoboWorld Cup is presented. A platform for the study of biped walking control is designed and implemented. A system architecture for TWNHR-IV is presented, where a CMOS sensor, a digital compass, an accelerometer, and eight pressure sensors are used to obtain the information of the environment. In order to design the robot locomotion control, a human-machine interface is implemented to study and design the locomotion control of biped robot. Two practical experiment results are presented to illustrate that TWNHR-IV can be a soccer robot to autonomously decide some actions to stand up from a fall, find a ball, walk to an appropriate position, and kick a ball.","Humanoid robot; Soccer robt; System architecture","Biomechanics; Biped locomotion; Intelligent robots; Man machine systems; Robot applications; Robotics; Robots; Sensors; Biped robots; Biped walkings; CMOS sensors; Digital compasses; Human-machine interfaces; Humanoid robot; Humanoid soccer robots; Locomotion controls; Robot locomotion controls; Soccer robots; Soccer robt; System architecture; Machine design","Huang Q., Li K., Nakamura Y., Humanoid walk control with feedforward dynamic pattern and feedback sensory reflection, IEEE International Symposium on Computational intelligence in Robotics and Automation, pp. 29-34, (2001); Miyazaki F., Arimoto S., A control theoretic study on dynamical biped locomotion, ASME J. Dyna. Syst. Meas. Contr., 102, pp. 233-239, (1980); Pauk J.H., Chung H., ZMP compensation by on-line trajectory generation for biped robots, IEEE International Conference on Systems, Man, and Cybernetics, 4, pp. 960-965, (1999); Sugihara T., Nakamura Y., Inoue H., Real time humanoid motion generation through ZMP manipulation based on inverted pendulum control, IEEE International Conference on Robotics and Automation, 2, pp. 1404-1409, (2002); Wong C.C., Cheng C.T., Wang H.Y., Li S.A., Huang K.H., Wan S.C., Yang Y.T., Hsu C.L., Wang Y.T., Jhou S.D., Chan H.M., Huang J.C., Hu Y.Y., Description of TKU-PaPaGo team for humanoid league of RoboCup 2005, RoboCup International Symposium 2005; Zhou C., Jagannathan K., Adaptive network based fuzzy of a dynamic biped walking control robot, IEEE Int. Conf. on Robotics and Automation, 4, pp. 3829-3834, (2000); Wong C.C., Cheng C.T., Huang K.X., Wu H.C., Hsu C.L., Yang Y.T., Wan S.C., Chen L.C., Hu Y.Y., Design and implementation of humanoid robot for obstacle avoidance, FIRA Robot World Congress, (2007); Zhou C., Jagannathan K., Adaptive network based fuzzy of a dynamic biped walking control robot, IEEE Int. Conf. on Robotics and Automation, 4, pp. 3829-3834, (2000)","C.-C. Wong; Department of Electrical Engineering, Tamkang University Tamsui, Taipei 25137, Taiwan; email: wong@ee.tku.edu.tw","","","10059113","","JHITE","","English","J. Harbin Inst. Technol.","Article","Final","","Scopus","2-s2.0-57749104091" "Beron-Vera F.; Lemus S.A.; Mahmoud A.O.; Beron-Vera P.; Ezzy A.; Chen C.-B.; Mann B.J.; Travascio F.","Beron-Vera, Francisco (59165781500); Lemus, Sergio A. (58035099000); Mahmoud, Ahmed O. (59165835600); Beron-Vera, Pedro (59165791900); Ezzy, Alexander (59165825000); Chen, Cheng-Bang (57189443173); Mann, Bryan J. (59165771100); Travascio, Francesco (21834837100)","59165781500; 58035099000; 59165835600; 59165791900; 59165825000; 57189443173; 59165771100; 21834837100","Asymmetry in kinematics of dominant/nondominant lower limbs in central and lateral positioned college and sub-elite soccer players","2024","PLoS ONE","19","6 June","e0304511","","","","0","10.1371/journal.pone.0304511","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85195533988&doi=10.1371%2fjournal.pone.0304511&partnerID=40&md5=f7bc54101593be9badcbdbccceb3152d","Department of Mechanical and Aerospace Engineering, University of Miami, Coral Gables, FL, United States; Department of Physics, University of Miami, Coral Gables, FL, United States; Department of Industrial Engineering, University of Miami, Coral Gables, FL, United States; Department of Kinesiology and Sport Management, Texas A&M University, College Station, TX, United States; Department of Orthopaedics, University of Miami, Miami, FL, United States; Max Biedermann Institute for Biomechanics, Mount Sinai Medical Center, Miami Beach, FL, United States","Beron-Vera F., Department of Mechanical and Aerospace Engineering, University of Miami, Coral Gables, FL, United States; Lemus S.A., Department of Mechanical and Aerospace Engineering, University of Miami, Coral Gables, FL, United States; Mahmoud A.O., Department of Mechanical and Aerospace Engineering, University of Miami, Coral Gables, FL, United States; Beron-Vera P., Department of Physics, University of Miami, Coral Gables, FL, United States; Ezzy A., Department of Mechanical and Aerospace Engineering, University of Miami, Coral Gables, FL, United States; Chen C.-B., Department of Industrial Engineering, University of Miami, Coral Gables, FL, United States; Mann B.J., Department of Kinesiology and Sport Management, Texas A&M University, College Station, TX, United States; Travascio F., Department of Mechanical and Aerospace Engineering, University of Miami, Coral Gables, FL, United States, Department of Orthopaedics, University of Miami, Miami, FL, United States, Max Biedermann Institute for Biomechanics, Mount Sinai Medical Center, Miami Beach, FL, United States","Change of direction, stops, and pivots are among the most common non-contact movements associated with anterior cruciate ligament (ACL) injuries in soccer. By observing these dynamic movements, clinicians recognize abnormal kinematic patterns that contribute to ACL tears such as increased knee valgus or reduced knee flexion. Different motions and physical demands are observed across playing positions, which may result in varied lower limb kinematic patterns. In the present study, 28 college and sub-elite soccer players performed four dynamic motions (change of direction with and without ball, header, and instep kick) with the goal of examining the effect of on-field positioning, leg dominance, and gender in lower body kinematics. Motion capture software monitored joint angles in the knee, hip, and ankle. A three-way ANOVA showed significant differences in each category. Remarkably, centrally positioned players displayed significantly greater knee adduction (5º difference, p = 0.013), hip flexion (9º difference, p = 0.034), hip adduction (7º difference, p = 0.016), and dorsiflexion (12º difference, p = 0.022) when performing the instep kick in comparison to their laterally positioned counterparts. These findings suggest that central players tend to exhibit a greater range of motion when performing an instep kicking task compared to laterally positioned players. At a competitive level, this discrepancy could potentially lead to differences in lower limb muscle development among on-field positions. Accordingly, it is suggested to implement position-specific prevention programs to address these asymmetries in lower limb kinematics, which can help mitigate dangerous kinematic patterns and consequently reduce the risk of ACL injury in soccer players. Copyright: © 2024 Beron-Vera et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.","","Adolescent; Adult; Ankle Joint; Anterior Cruciate Ligament Injuries; Athletes; Biomechanical Phenomena; Female; Hip Joint; Humans; Knee Joint; Lower Extremity; Male; Range of Motion, Articular; Soccer; Young Adult; adolescent; adult; ankle joint; anterior cruciate ligament injury; athlete; biomechanics; female; hip joint; human; knee joint; lower limb; male; pathophysiology; physiology; range of motion; soccer; young adult","Dvorak J, Junge A., Football injuries and physical symptoms. A review of the literature, Am J Sports Med, 28, 5, pp. S3-S9, (2000); The FIFA World Cup Qatar 2022™ in numbers 2023; Inklaar H., Soccer Injuries, Sports Medicine, 18, 1, pp. 55-73, (1994); Ekstrand J, Hagglund M, Walden M., Epidemiology of muscle injuries in professional football (soccer), Am J Sports Med, 39, 6, pp. 1226-1232, (2011); Walden M, Hagglund M, Ekstrand J., Time-trends and circumstances surrounding ankle injuries in men's professional football: an 11-year follow-up of the UEFA Champions League injury study, Br J Sports Med, 47, 12, pp. 748-753, (2013); Hootman JM, Dick R, Agel J., Epidemiology of collegiate injuries for 15 sports: summary and recommendations for injury prevention initiatives, J Athl Train, 42, 2, pp. 311-319, (2007); Sepulveda F, Sanchez L, Amy E, Micheo W., Anterior Cruciate Ligament Injury: Return to Play, Function and Long-Term Considerations, Curr Sports Med Rep, 16, 3, pp. 172-178, (2017); Myer GD, Sugimoto D, Thomas S, Hewett TE., The influence of age on the effectiveness of neuromuscular training to reduce anterior cruciate ligament injury in female athletes: a meta-analysis, Am J Sports Med, 41, 1, pp. 203-215, (2013); Sugimoto D, Myer GD, Foss KD, Hewett TE., Specific exercise effects of preventive neuromuscular training intervention on anterior cruciate ligament injury risk reduction in young females: meta-analysis and subgroup analysis, Br J Sports Med, 49, 5, pp. 282-289, (2015); Padua DA, Marshall SW, Boling MC, Thigpen CA, Garrett WE, Beutler AI., The Landing Error Scoring System (LESS) is a valid and reliable clinical assessment tool of jump-landing biomechanics: the JUMP-ACL study, The American journal of sports medicine, 37, 10, pp. 1996-2002, (2009); Quatman CE, Quatman-Yates CC, Hewett TE., A'plane' explanation of anterior cruciate ligament injury mechanisms: a systematic review, Sports Med, 40, 9, pp. 729-746, (2010); Alentorn-Geli E, Myer GD, Silvers HJ, Samitier G, Romero D, Lazaro-Haro C, Et al., Prevention of noncontact anterior cruciate ligament injuries in soccer players. Part 1: Mechanisms of injury and underlying risk factors, Knee Surgery, Sports Traumatology, Arthroscopy, 17, 7, pp. 705-729, (2009); Hewett TE, Myer GD, Ford KR, Heidt RS, Colosimo AJ, McLean SG, Et al., Biomechanical Measures of Neuromuscular Control and Valgus Loading of the Knee Predict Anterior Cruciate Ligament Injury Risk in Female Athletes: A Prospective Study, The American Journal of Sports Medicine, 33, 4, pp. 492-501, (2005); Hewett TE, Bates NA., Preventive Biomechanics: A Paradigm Shift With a Translational Approach to Injury Prevention, Am J Sports Med, 45, 11, pp. 2654-2664, (2017); Boden BP, Dean GS, Feagin JA, Garrett WE., Mechanisms of Anterior Cruciate Ligament Injury, Orthopedics, 23, 6, pp. 573-578, (2000); Fauno P, Wulff Jakobsen B., Mechanism of Anterior Cruciate Ligament Injuries in Soccer, International Journal of Sports Medicine, 27, 1, pp. 75-79, (2006); Weiss K, Whatman C., Biomechanics Associated with Patellofemoral Pain and ACL Injuries in Sports, Sports Medicine, 45, 9, pp. 1325-1337, (2015); Villa FD, Buckthorpe M, Grassi A, Nabiuzzi A, Tosarelli F, Zaffagnini S, Et al., Systematic video analysis of ACL injuries in professional male football (soccer): injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, British Journal of Sports Medicine, 54, 23, pp. 1423-1432, (2020); McLean SG, Walker KB, van den Bogert AJ., Effect of gender on lower extremity kinematics during rapid direction changes: An integrated analysis of three sports movements, Journal of Science and Medicine in Sport, 8, 4, pp. 411-422, (2005); Olsen O-E, Myklebust G, Engebretsen L, Bahr R., Injury Mechanisms for Anterior Cruciate Ligament Injuries in Team Handball:A Systematic Video Analysis, The American Journal of Sports Medicine, 32, 4, pp. 1002-1012, (2004); Pollard CD, Sigward SM, Powers CM., Gender Differences in Hip Joint Kinematics and Kinetics During Side-Step Cutting Maneuver, Clinical Journal of Sport Medicine, 17, 1, pp. 38-42, (2007); Griffin LY, Agel J, Albohm MJ, Arendt EA, Dick RW, Garrett WE, Et al., Noncontact Anterior Cruciate Ligament Injuries: Risk Factors and Prevention Strategies, JAAOS - Journal of the American Academy of Orthopaedic Surgeons, 8, 3, pp. 141-150, (2000); Arendt E, Dick R., Knee Injury Patterns Among Men and Women in Collegiate Basketball and Soccer: NCAA Data and Review of Literature, The American Journal of Sports Medicine, 23, 6, pp. 694-701, (1995); Ireland ML., The female ACL: why is it more prone to injury?, Orthopedic Clinics, 33, 4, pp. 637-651, (2002); Hewett TE, Shultz SJ, Griffin LY, Understanding and preventing noncontact ACL injuries, (2007); Rahnama N, Lees A, Bambaecichi E., Comparison of muscle strength and flexibility between the preferred and non-preferred leg in English soccer players, Ergonomics, 48, 11-14, pp. 1568-1575, (2005); Hewett TE, Di Stasi SL, Myer GD., Current Concepts for Injury Prevention in Athletes After Anterior Cruciate Ligament Reconstruction, The American Journal of Sports Medicine, 41, 1, pp. 216-224, (2013); Mokhtarzadeh H, Ewing K, Janssen I, Yeow C-H, Brown N, Lee PVS., The effect of leg dominance and landing height on ACL loading among female athletes, Journal of Biomechanics, 60, pp. 181-187, (2017); Gao Z., The Effect of Application of Asymmetry Evaluation in Competitive Sports: A Systematic Review, Physical Activity and Health, 6, pp. 257-272, (2022); Brophy R, Silvers HJ, Gonzales T, Mandelbaum BR., Gender influences: the role of leg dominance in ACL injury among soccer players, British Journal of Sports Medicine, 44, 10, pp. 694-697, (2010); Montalvo AM, Schneider DK, Webster KE, Yut L, Galloway MT, Heidt RS, Et al., Anterior Cruciate Ligament Injury Risk in Sport: A Systematic Review and Meta-Analysis of Injury Incidence by Sex and Sport Classification, Journal of Athletic Training, 54, 5, pp. 472-482, (2019); Di Salvo V, Baron R, Tschan H, Calderon Montero FJ, Bachl N, Pigozzi F., Performance characteristics according to playing position in elite soccer, Int J Sports Med, 28, 3, pp. 222-227, (2007); Dellal A, Chamari K, Wong DP, Ahmaidi S, Keller D, Barros R, Et al., Comparison of physical and technical performance in European soccer match-play: FA Premier League and La Liga, European Journal of Sport Science, 11, 1, pp. 51-59, (2011); Granero-Gil P, Gomez-Carmona CD, Bastida-Castillo A, Rojas-Valverde D, de la Cruz E, Pino-Ortega J., Influence of playing position and laterality in centripetal force and changes of direction in elite soccer players, PLOS ONE, 15, 4, (2020); Bloomfield J, Polman R, O'Donoghue P., Physical Demands of Different Positions in FA Premier League Soccer, J Sports Sci Med, 6, 1, pp. 63-70, (2007); Ingebrigtsen J, Dalen T, Hjelde GH, Drust B, Wisloff U., Acceleration and sprint profiles of a professional elite football team in match play, European Journal of Sport Science, 15, 2, pp. 101-110, (2015); Warren C, Agyemang KJ., Soccer in the United States, Routledge handbook of football business and management, pp. 590-600, (2018); Curtis RM, Huggins RA, Looney DP, West CA, Fortunati A, Fontaine GJ, Et al., Match Demands of National Collegiate Athletic Association Division I Men's Soccer, The Journal of Strength & Conditioning Research, 32, 10, pp. 2907-2917, (2018); Uhlrich SD, Falisse A, Kidzinski L, Muccini J, Ko M, Chaudhari AS, Et al., OpenCap: Human movement dynamics from smartphone videos, PLOS Computational Biology, 19, 10, (2023); Uhlrich SD, Falisse A, Kidzinski L, Muccini J, Ko M, Chaudhari AS, Et al., OpenCap: 3D human movement dynamics from smartphone videos, (2022); Lima Y, Collings T, Hall M, Bourne M, Diamond L., Assessing lower-limb kinematics via OpenCap during dynamic tasks relevant to anterior cruciate ligament injury: a validity study, Journal of Science and Medicine in Sport, 26, (2023); Horsak B, Eichmann A, Lauer K, Prock K, Krondorfer P, Siragy T, Et al., Concurrent validity of smartphone-based markerless motion capturing to quantify lower-limb joint kinematics in healthy and pathological gait, Journal of Biomechanics, 159, (2023); Delp SL, Anderson FC, Arnold AS, Loan P, Habib A, John CT, Et al., OpenSim: Open-Source Software to Create and Analyze Dynamic Simulations of Movement, IEEE Transactions on Biomedical Engineering, 54, 11, pp. 1940-1950, (2007); Lai AKM, Arnold AS, Wakeling JM., Why are Antagonist Muscles Co-activated in My Simulation? A Musculoskeletal Model for Analysing Human Locomotor Tasks, Annals of Biomedical Engineering, 45, 12, pp. 2762-2774, (2017); Rajagopal A, Dembia CL, Demers MS, Delp DD, Hicks JL, Delp SL., Full-Body Musculoskeletal Model for Muscle-Driven Simulation of Human Gait, IEEE Transactions on Biomedical Engineering, 63, 10, pp. 2068-2079, (2016); Faul F, Erdfelder E, Lang A-G, Buchner A., G*Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences, Behavior Research Methods, 39, 2, pp. 175-191, (2007); DeLang MD, Kondratek M, DiPace LJ, Hew-Butler T., COLLEGIATE MALE SOCCER PLAYERS EXHIBIT BETWEEN-LIMB SYMMETRY IN BODY COMPOSITION, MUSCLE STRENGTH, AND RANGE OF MOTION, Int J Sports Phys Ther, 12, 7, pp. 1087-1094, (2017); Butler RJ, Willson JD, Fowler D, Queen RM., Gender Differences in Landing Mechanics Vary Depending on the Type of Landing, Clinical Journal of Sport Medicine, 23, 1, pp. 52-57, (2013); Wang J, Fu W., Asymmetry between the dominant and non-dominant legs in the lower limb biomechanics during single-leg landings in females, Advances in Mechanical Engineering, 11, 5, (2019); Brophy RH, Backus S, Kraszewski AP, Steele BC, Ma Y, Osei D, Et al., Differences Between Sexes in Lower Extremity Alignment and Muscle Activation During Soccer Kick, JBJS, 92, 11, pp. 2050-2058, (2010)","F. Travascio; Department of Mechanical and Aerospace Engineering, University of Miami, Coral Gables, United States; email: f.travascio@miami.edu","","Public Library of Science","19326203","","POLNC","38848409","English","PLoS ONE","Article","Final","","Scopus","2-s2.0-85195533988" "Cortes N.; Porter L.D.; Ambegaonkar J.P.; Caswell S.V.","Cortes, Nelson (23033673100); Porter, Larissa D. (56435530500); Ambegaonkar, Jatin P. (12805539400); Caswell, Shane V. (7004094560)","23033673100; 56435530500; 12805539400; 7004094560","Postural stability does not differ among female sports with high risk of anterior cruciate ligament injury","2014","Medical Problems of Performing Artists","29","4","","216","220","4","2","10.21091/mppa.2014.4043","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84914144609&doi=10.21091%2fmppa.2014.4043&partnerID=40&md5=f99125b396a0d33fe6fef0c36443b987","Sports Medicine Assessment Research and Testing (SMART) Laboratory, United States; SMART Laboratory, Athletic Training Education Program, George Mason University, Manassas, United States; SMART Laboratory, Division of Health and Human Performance, George Mason University, 10900 University Blvd. MS 4E5, Manassas, 20110, VA, United States","Cortes N., Sports Medicine Assessment Research and Testing (SMART) Laboratory, United States, SMART Laboratory, Division of Health and Human Performance, George Mason University, 10900 University Blvd. MS 4E5, Manassas, 20110, VA, United States; Porter L.D., Sports Medicine Assessment Research and Testing (SMART) Laboratory, United States; Ambegaonkar J.P., Sports Medicine Assessment Research and Testing (SMART) Laboratory, United States; Caswell S.V., SMART Laboratory, Athletic Training Education Program, George Mason University, Manassas, United States","Dancers have a lower incidence of anterior cruciate ligament (ACL) injury compared to athletes in sports that involve cutting and landing motions. Balance can impact ACL injury risk and is related to neuromuscular control during movement. The purpose of this study was to investigate whether balance differences exist among female dancers and female soccer and basketball athletes. Fifty-eight female dancers, soccer, and basketball athletes (16.5 ± 1.6 yrs, 1.6 ± 0.2 m, 60.2 ± 14.1 kg) completed the Stability Evaluation Test (SET) on the NeuroCom VSR Sport (NeuroCom International, Clackamas, OR) to measure sway velocity. Video records of the SET test were used for Balance Error Scoring System (BESS) test scoring. A oneway ANCOVA compared composite sway velocity and BESS scores among sports. There was no statistically significant difference for sway velocity or BESS among sports (sway velocity soccer 2.3 ± 0.4, dance 2.2 ± 0.4, and basketball 2.4 ± 0.4; BESS soccer 13.6 ± 5.0, dance 11.9 ± 5.5, and basketball 14.9 ± 5.1, p>0.05). Balance was similar among athletes participating in different sports (dance, basketball, and soccer). Quasi-static balance may not play a significant role in neuromuscular control during movement and not be a significant risk factor to explain the disparity in ACL injury incidence among sports. Future research should examine the effects of dynamic balance and limb asymmetries among sports to elucidate on the existing differences on ACL injury incidence rates. © 2014 Science & Medicine.","","Adolescent; Anterior Cruciate Ligament; Athletes; Athletic Injuries; Basketball; Biomechanical Phenomena; Dancing; Female; Humans; Kinesthesis; Postural Balance; Soccer; adolescent; anterior cruciate ligament; athlete; Athletic Injuries; basketball; biomechanics; body equilibrium; comparative study; dancing; female; human; kinesthesia; physiology; soccer","Griffin L.Y., Albohm M.J., Arendt E.A., Et al., Understanding and preventing noncontact anterior cruciate ligament injuries: A review of the Hunt Valley II meeting, January 2005, Am J Sports Med, 34, 9, pp. 1512-1532, (2006); Silvers H.J., Mandelbaum B.R., ACL injury prevention in the athlete, Sport-orthop Sport-traumatol Sports Orthop Traumatol, 27, 1, pp. 18-26, (2011); Hewett T.E., Lindenfeld T.N., Riccobene J.V., Noyes F.R., The effect of neuromuscular training on the incidence of knee injury in female athletes: A prospective study, Am J Sports Med, 27, 6, pp. 699-706, (1999); Boden B.P., Dean G.S., Feagin J.A., Garrett W.E., Mechanisms of anterior cruciate ligament injury, Orthopedics, 23, 6, pp. 573-578, (2000); Hewett T.E., Myer G.D., Ford K.R., Reducing knee and anterior cruciate ligament injuries among female athletes: A systematic review of neuromuscular training interventions, J Knee Surg, 18, 1, pp. 82-88, (2005); Noyes F.R., Barber-Westin S.D., Neuromuscular retraining intervention programs: Do they reduce noncontact anterior cruciate ligament injury rates in adolescent female athletes?, Arthroscopy, 30, 2, pp. 245-255, (2014); Mihata L.C.S., Beutler A.I., Boden B.P., Comparing the incidence of anterior cruciate ligament injury in collegiate lacrosse, soccer, and basketball players: Implications for anterior cruciate ligament mechanism and prevention, Am J Sports Med, 34, 6, pp. 899-904, (2006); Lohmander L.S., Ostenberg A., Englund M., Roos H., High prevalence of knee osteoarthritis, pain, and functional limitations in female soccer players 12 years after anterior cruciate ligament injury, Arthritis Rheum, 50, 10, pp. 3145-3152, (2004); Alentorn-geli E., Myer G.D., Silvers H.J., Et al., Prevention of noncontact anterior cruciate ligament injuries in soccer players: Pt 1. 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Influence of sex on risk of anterior cruciate ligament injury, Am J Sports Med, 42, 5, pp. 1082-1088, (2014); Watson A.W., Mac Donncha C., A reliable technique for the assessment of posture: Assessment criteria for aspects of posture, J Sports Med Phys Fitness, 40, 3, pp. 260-270, (2000); Arendt E.A., Agel J., Dick R., Anterior cruciate ligament injury patterns among collegiate men and women, J Athl Train, 34, 2, pp. 86-92, (1999); Shea K.G., Grimm N.L., Ewing C.K., Aoki S.K., Youth sports anterior cruciate ligament and knee injury epidemiology: Who is getting injured? In what sports? When?, Clin Sports Med, 30, 4, pp. 691-706, (2011); Batson G., Validating a dance-specific screening test for balance, Med Probl Perform Art, 25, pp. 110-115, (2010); Ferber-Viart C., Ionescu E., Morlet T., Et al., Balance in healthy individuals assessed with Equitest: Maturation and normative data for children and young adults, Int J Pediatr Otorhinolaryngol, 71, 7, pp. 1041-1046, (2007); Hegeman J., Shapkova E.Y., Honegger F., Allum J.H.J., Effect of age and height on trunk sway during stance and gait, J Vestib Res Equilib Orient, 17, 2-3, pp. 75-87, (2007)","","","Science and Medicine Inc.","08851158","","MPPAE","25433258","English","Med. Probl. Perform. Artists","Article","Final","","Scopus","2-s2.0-84914144609" "Tamura A.; Shimura K.; Inoue Y.","Tamura, Akihiro (57190306586); Shimura, Keita (15221005600); Inoue, Yuri (57867434500)","57190306586; 15221005600; 57867434500","Lower-Extremity Kinematics of Soccer Players with Chronic Ankle Instability during Running: A Case-Control Study","2023","Biomechanics (Switzerland)","3","1","","93","102","9","1","10.3390/biomechanics3010009","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85176610924&doi=10.3390%2fbiomechanics3010009&partnerID=40&md5=438f4764f39774b4868a0b6e0b280ae1","Department of Physical Therapy, School of Health Sciences at Narita, International University of Health and Welfare, Narita, 286-8686, Japan; School of Health Sciences, Tokyo International University, Kawagoe, 350-1197, Japan; Department of Physical Therapy, Faculty of Nursing and Rehabilitation, Konan Women’s University, Kobe, 658-0001, Japan","Tamura A., Department of Physical Therapy, School of Health Sciences at Narita, International University of Health and Welfare, Narita, 286-8686, Japan; Shimura K., School of Health Sciences, Tokyo International University, Kawagoe, 350-1197, Japan; Inoue Y., Department of Physical Therapy, Faculty of Nursing and Rehabilitation, Konan Women’s University, Kobe, 658-0001, Japan","The purpose of this study was to clarify the characteristics of lower-extremity kinematics during the running of soccer players with chronic ankle instability (CAI) in comparison to those without CAI. Twenty-two male college soccer players participated in this study. Twelve players were assigned to the CAI group and ten players to the non-CAI group, and players were diagnosed according to the Cumberland Ankle Instability Tool. Kinematic data of the hip, knee, ankle, foot, and ground reaction force components during the stance phase of running were obtained using a three-dimensional motion analysis system. The results revealed that soccer players with CAI who landed with ankle inversion and other characteristic kinematics in their lower extremity during the stance phase of running were similar to those without CAI. These results show that running kinematics in soccer players are not affected by the presence or absence of CAI. Future studies based on the results of this study may contribute to the analysis of the risk of developing CAI during soccer and may also help prevent lateral ankle sprains. © 2023 by the authors.","ankle sprain; biomechanics; joint instability; motion analysis","","Woods C., Hawkins R., Hulse M., The Football Association Medical Research Programme: An audit of injuries in professional football: An analysis of ankle sprains, Br. J. Sports Med, 37, pp. 233-238, (2003); Fong D.T.P., Hong Y., Chan L.K., Yung P.S.H., Chan K.M., A systematic review on ankle injury and ankle sprain in sports, Sports Med, 37, pp. 73-94, (2007); Dvorak J., Junge A., Derman W., Schwellnus M., Injuries and illnesses of football players during the 2010 FIFA World Cup, Br. J. 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Eng, 6, pp. 118-128, (2012); Sakaguchi M., Ogawa H., Shimizu N., Kanehisa H., Yanai T., Kawakami Y., Gender differences in hip and ankle joint kinematics on knee abduction during running, Eur. J. Sport Sci, 14, pp. S302-S309, (2014); Taylor J.B., Wright A.A., Dischiavi S.L., Townsend M.A., Marmon A.R., Activity Demands During Multi-Directional Team Sports: A Systematic Review, Sports Med, 47, pp. 2533-2551, (2017); Baker R., Robb J., Foot models for clinical gait analysis, Gait Posture, 23, pp. 399-400, (2006); Bruening D.A., Cooney K.M., Buczek F.L., Analysis of a kinetic multi-segment foot model part II: Kinetics and clinical implications, Gait Posture, 35, pp. 535-540, (2012)","A. Tamura; Department of Physical Therapy, School of Health Sciences at Narita, International University of Health and Welfare, Narita, 286-8686, Japan; email: a.tamura.dp@gmail.com","","Multidisciplinary Digital Publishing Institute (MDPI)","26737078","","","","English","Biomechanics","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85176610924" "Nascimento N.; Sideris V.; Read P.J.","Nascimento, Nuno (57895402900); Sideris, Vasileios (55604679200); Read, Paul J. (55764420600)","57895402900; 55604679200; 55764420600","Biomechanical Analysis of the Tuck Jump Assessment","2022","Journal of Strength and Conditioning Research","36","10","","2946","2949","3","1","10.1519/JSC.0000000000003947","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85138319275&doi=10.1519%2fJSC.0000000000003947&partnerID=40&md5=c597b32c1735b41fca264e46b78f8c8d","Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; School of Sport and Exercise, University of Gloucestershire, Gloucester, United Kingdom; Institute of Sport, Exercise and Health, University College London, London, United Kingdom","Nascimento N., Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; Sideris V., Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; Read P.J., Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar, School of Sport and Exercise, University of Gloucestershire, Gloucester, United Kingdom, Institute of Sport, Exercise and Health, University College London, London, United Kingdom","Nascimento, N, Sideris, V, and Read, PJ. Biomechanical analysis of the tuck jump assessment. J Strength Cond Res 36(10): 2946-2949, 2022 - The tuck jump assessment (TJA) examines plyometric technique flaws associated with the increased risk of anterior cruciate ligament injury. Biomechanical data to investigate the mechanics used during the TJA are limited and assessing each jump individually across the entire test period is time inefficient. This study examined performance characteristics and movement mechanics in 16 professional soccer players during a standardized TJA protocol (10 jumps) to determine if sensitive periods exist within the test period (first 5 vs. last 5). Jump height, average power (PW) reactive strength index (RSI), frontal plane projection angle (FPPA), knee angular velocity (AV), and peak knee flexion angle (PKA) were analyzed using an optoelectrical and inertial measurement unit device. Jump height and PW increased in the past 5 jumps displaying a medium effect size (d = > 0.5). A trend was observed of increased AV, FPPA, and PKA during the past 5 jumps; however, no meaningful differences were observed between respective jump phases, and effect sizes were small (d ≤ 0.2). This study indicates that performance metrics increase during the past 5 jumps of a standardized TJA 10-jump protocol; thus, analyzing the entire test period may not be required, providing a time-efficient approach. Caution should be applied if using this protocol as an injury risk screening tool or to identify fatigue related alterations in male professional soccer players as no obvious movement abnormalities were apparent and minimal differences were present between jump phases in a range of kinematic variables across the recorded test duration. © 2022 NSCA National Strength and Conditioning Association. All rights reserved.","biomechanics; injury risk, landing mechanics","Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Humans; Knee Joint; Male; Movement; Soccer; anterior cruciate ligament injury; biomechanics; human; injury; knee; male; movement (physiology); soccer","Artur S., Grzegorz K., Mateusz S., Relationship between lower limb angular kinematic variables and the effectiveness of sprinting during the acceleration phase, Appl Bionics Biomech, 18, pp. 1-3, (2016); Browne D., Flanagan E., Reactive strength endurance: Part 1. 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Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Development and validation of a clinic-based prediction tool to identify female athletes at high risk for anterior cruciate ligament injury, Am J Sports Med, 38, pp. 2025-2033, (2010); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Biomechanics laboratory-based prediction algorithm to identify female athletes with high knee loads that increase risk of ACL injury, Br J Sports Med, 45, pp. 245-252, (2011); Clinical IMU | Noraxon USA, (2015); Pratt K.A., Sigward S.M., Detection of knee power deficits following anterior cruciate ligament reconstruction using wearable sensors, J Orthop Sports Phys Ther, 48, pp. 895-902, (2018); Read P., Oliver J., De Ste Croix M., Myer G., Lloyd R.S., The effects of chronological age and stage of maturation on landing kinematics in elite male youth soccer players, J Athl Train, 53, pp. 372-378, (2018); Read P., Oliver J.L., Croix M., Myer G.D., Lloyd R.S., Reliability of the Tuck Jump injury risk screening assessment in elite male youth soccer players, J Strength Cond Res, 30, pp. 1510-1516, (2016); Read P.J., Oliver J.L., Croix M., Myer G.D., Lloyd R.S., A review of field-based assessments of neuromuscular control and their utility in male youth soccer players, J Strength Cond Res, 33, pp. 283-299, (2019); Tamura A., Akasaka K., Otsudo T., Fatigue influences lower extremity angular velocities during a single-leg drop vertical jump, J Phys Ther Sci, 29, pp. 498-504, (2017); Volpi P., Pozzoni R., Galli M., The major traumas in youth football, Knee Surg Sports Traumatol Arthrosc, 11, pp. 399-402, (2003)","P.J. Read; Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; email: paul.read@aspetar.com","","NSCA National Strength and Conditioning Association","10648011","","","36135038","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-85138319275" "Römer C.; Zessin E.; Czupajllo J.; Fischer T.; Wolfarth B.; Lerchbaumer M.H.","Römer, Claudia (57213022725); Zessin, Enrico (57195988288); Czupajllo, Julia (57800800000); Fischer, Thomas (56714799300); Wolfarth, Bernd (6602363183); Lerchbaumer, Markus Herbert (57201381943)","57213022725; 57195988288; 57800800000; 56714799300; 6602363183; 57201381943","Effect of Physical Parameters and Training Load on Patellar Tendon Stiffness in Professional Athletes","2023","Diagnostics","13","15","2541","","","","1","10.3390/diagnostics13152541","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85167696805&doi=10.3390%2fdiagnostics13152541&partnerID=40&md5=615b411e426d73edacde1c57da36c598","Department of Sports Medicine, Charité Universitätsmedizin Berlin, Berlin, 10115, Germany; Department of Radiology, Charité Universitätsmedizin Berlin, Berlin, 10117, Germany","Römer C., Department of Sports Medicine, Charité Universitätsmedizin Berlin, Berlin, 10115, Germany; Zessin E., Department of Sports Medicine, Charité Universitätsmedizin Berlin, Berlin, 10115, Germany; Czupajllo J., Department of Sports Medicine, Charité Universitätsmedizin Berlin, Berlin, 10115, Germany; Fischer T., Department of Radiology, Charité Universitätsmedizin Berlin, Berlin, 10117, Germany; Wolfarth B., Department of Sports Medicine, Charité Universitätsmedizin Berlin, Berlin, 10115, Germany; Lerchbaumer M.H., Department of Radiology, Charité Universitätsmedizin Berlin, Berlin, 10117, Germany","Background: Injuries of the patellar tendon commonly occur as a result of mechanical loading of the tendon during physical activity. Shear wave elastography (SWE) is an established technique for assessing tendon stiffness, and has good interindividual reliability. The aim of this study was to investigate the impacts of physical parameters and different sports on patellar tendon stiffness in professional athletes using SWE. Methods: Standardized patellar tendon SWE was performed in a relaxed supine position with a small roll under the knee (20° flexion) in 60 healthy professional athletes (30 female, 30 male). Multiple linear regression was performed for patellar tendon stiffness including gender, age, body mass index (BMI), and type of sport. Results: Patellar tendon stiffness showed no significant difference between female (3.320 m/s) and male (3.416 m/s) professional athletes. Mean age (female: 20.53 years; male: 19.80 years) and BMI (female: 23.24 kg/m2; male: 23.52 kg/m2) were comparable. Female professional athletes with oral contraceptive (OC) intake showed higher patellar tendon stiffness than athletes without OC intake (3.723 versus 3.017; p = 0.053), but not significantly. Conclusion: In professional athletes, there are no significant differences in patellar tendon stiffness according to gender, age, BMI and type of sport (handball, volleyball, soccer, sprint, hammer throw). Oral contraceptives may not have an impact on patellar tendon stiffness in female athletes. Further studies are necessary. © 2023 by the authors.","elastography; muscle; shear wave elastography; SWE; tendon; ultrasound","desogestrel; ethinylestradiol; adult; age; Article; biomechanics; body mass; female; gender; hammer throw; handball sport; human; knee function; major clinical study; male; multiple linear regression analysis; normal human; oral contraception; patellar ligament; patellar tendon stiffness; professional athlete; prospective study; resistance training; shear wave elastography; soccer; sport; supine position; tendinitis; volleyball","Coombes B.K., Tucker K., Vicenzino B., Vuvan V., Mellor R., Heales L., Nordez A., Hug F., Achilles and patellar tendinopathy display opposite changes in elastic properties: A shear wave elastography study, Scand. J. Med. Sci. 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Sports Med, 38, pp. 206-209, (2004)","C. Römer; Department of Sports Medicine, Charité Universitätsmedizin Berlin, Berlin, 10115, Germany; email: claudia.roemer@charite.de","","Multidisciplinary Digital Publishing Institute (MDPI)","20754418","","","","English","Diagn.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85167696805" "Taberner M.; O'keefe J.; Dunn A.; Cohen D.D.","Taberner, M. (57189594560); O'keefe, J. (57189597669); Dunn, A. (36757615600); Cohen, D.D. (35483406300)","57189594560; 57189597669; 36757615600; 35483406300","Return to sport and beyond following intramuscular tendon hamstring injury: A case report of an English Premier League football player","2022","Physical Therapy in Sport","56","","","38","47","9","1","10.1016/j.ptsp.2022.05.013","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85132722025&doi=10.1016%2fj.ptsp.2022.05.013&partnerID=40&md5=7f020675582fd7efc50f0ade8c862f38","School of Sport and Exercise Sciences, Liverpool John Moore's University, Liverpool, United Kingdom; Academy Sports Science Department, Everton Football Club, Liverpool, United Kingdom; Royal Liverpool and Broadgreen University Hospitals NHS Trust, Liverpool, United Kingdom; The OrthTeam, Spire Healthcare Ltd, Manchester, United Kingdom; Masira Research Institute, University of Santander (UDES), Bucaramanga, Colombia; Sports Science Center (CCD), Colombian Ministry of Sport (Mindeporte), Colombia","Taberner M., School of Sport and Exercise Sciences, Liverpool John Moore's University, Liverpool, United Kingdom; O'keefe J., Academy Sports Science Department, Everton Football Club, Liverpool, United Kingdom; Dunn A., Royal Liverpool and Broadgreen University Hospitals NHS Trust, Liverpool, United Kingdom, The OrthTeam, Spire Healthcare Ltd, Manchester, United Kingdom; Cohen D.D., Masira Research Institute, University of Santander (UDES), Bucaramanga, Colombia, Sports Science Center (CCD), Colombian Ministry of Sport (Mindeporte), Colombia","Background: Hamstring strain injuries are the most common type of injury in elite football and are associated with a high risk of reinjury, particularly those involving the intramuscular tendon (IMT). Limited information is available regarding the rehabilitation and return to sport (RTS) processes following such injuries. This case study describes the clinical presentation of an elite football player following IMT hamstring injury, their on- and off-pitch rehabilitation alongside performance monitoring throughout RTS and beyond. Case scenario: An elite football player suffered a grade 2c hamstring injury during an English Premier League (EPL) match. The player underwent early post-injury management, alongside progressive off-pitch physical preparation. The ‘control-chaos continuum’ was used as a framework for on-pitch rehabilitation to prepare the player for a return to full team training and competition. Objective and subjective markers of the player's response to progressive on- and off-pitch loading were monitored throughout RTS and beyond. Outcomes: The player returned to on-pitch rehabilitation after 11 days, to full team training having achieved weekly pre-injury chronic running load outputs after 35 days and played in the EPL 40 days post-injury. The player did not suffer reinjury for the rest of the EPL season. Conclusion: An understanding the unique structural and mechanical properties of the IMT, alongside expected RTS timeframes are important to inform rehabilitation and decision-making processes post-injury. Performance and frequent load-response monitoring throughout RTS and beyond, in conjunction with practitioner experience and effective communication are critical in facilitating effective RTS and reduce risk of reinjury following IMT injury. © 2022 Elsevier Ltd","Elite football; Hamstring injury; Intramuscular tendon; Load response; Performance monitoring; Rehabilitation","Athletic Injuries; Football; Hamstring Muscles; Humans; Leg Injuries; Reinjuries; Return to Sport; Soccer; Soft Tissue Injuries; Tendon Injuries; Tendons; adult; Article; athlete; athletic performance; biceps femoris muscle; biomechanics; case report; clinical article; competition; follow up; football player; global positioning system; hamstring muscle; human; male; nuclear magnetic resonance imaging; numeric rating scale; physiotherapy; pitch; return to sport; sport; sport injury; tendon injury; ultrasound; young adult; football; injury; leg injury; soccer; soft tissue injury; sport injury; tendon; tendon injury","Allen T., Wilson S., Cohen D.D., Taberner M., Drill design using the 'control-chaos continuum': Blending science and art during return to sport following knee injury in elite football, Physical Therapy in Sport, 50, pp. 22-35, (2021); Ardern C.L., Glasgow P., Schneiders A., Witvrouw E., Clarsen B., Cools A., Gojanovic B., Griffin S., Khan K.M., Moksnes H., Mutch S.A., Phillips N., Reurink G., Sadler R., Silbernagel K.G., Thorborg K., Wangensteen A., Wilk K.E., Bizzini M., 2016 consensus statement on return to sport from the first world congress in sports physical therapy, bern, British Journal of Sports Medicine, 50, 14, pp. 853-864, (2016); Baldock J., Wright S., McNally E., Et al., Intratendinous hamstring injuries: Sequential MRIs as a tool to reduce the risk of reinjury in elite sport, BMJ Case Reports, 14, (2021); Bleakley C.M., Glasgow P., MacAuley D.C., PRICE needs updating, should we call the POLICE?, British Journal of Sports Medicine, 46, pp. 220-221, (2012); Bohm S., Mersmann F., Arampatzis A., Human tendon adaptation in response to mechanical loading: A systematic review and meta-analysis of exercise intervention studies on healthy adults, Sports Med Open, 1, 1, (2015); Bohm S., Mersmann F., Arampatzis A., Functional adaptation of connective tissue by training, Deutsche Zeitschrift für Sportmedizin, 70, pp. 105-110, (2019); Brukner P., Connell D., ’Serious thigh muscle strains': Beware the intramuscular tendon which plays an important role in difficult hamstring and quadriceps muscle strains, British Journal of Sports Medicine, 50, pp. 205-208, (2016); Brukner P., Cook J.L., Purdam C.R., Does the intramuscular tendon act like a free tendon?, British Journal of Sports Medicine, 52, 19, pp. 1227-1228, (2018); Constantine E., Taberner M., Richter C., Willett M., Cohen D.D., Isometric posterior chain peak force recovery response following match-play in elite youth soccer players: Associations with relative posterior chain strength, Sports (Basel), 7, 10, (2019); Cuthbert M., Comfort P., Ripley N., McMahon J.J., Evans M., Bishop C., Unilateral vs. bilateral hamstring strength assessments: Comparing reliability and inter-limb asymmetries in female soccer players, Journal of Sports Science, 39, 13, pp. 1481-1488, (2021); Dunlop G., Ardern C.L., Andersen T.E., Lewin C., Dupont G., Ashworth B., O'Driscoll G., Rolls A., Brown S., McCall A., Return-to-Play practices following hamstring injury: A worldwide survey of 131 premier League football teams, Sports Medicine, 50, 4, pp. 829-840, (2020); Ekstrand J., Walden M., Hagglund M., Hamstring injuries have increased by 4% annually in men's professional football, since 2001: A 13-year longitudinal analysis of the UEFA elite club injury study, British Journal of Sports Medicine, 50, pp. 731-737, (2016); Glasgow P., Phillips N., Bleakley C., Optimal loading: Key variables and mechanisms, British Journal of Sports Medicine, 49, 5, pp. 278-279, (2015); van der Horst N., Backx F., Goedhart E.A., Huisstede B.M., Return to play after hamstring injuries in football (soccer): A worldwide delphi procedure regarding definition, medical criteria and decision-making, British Journal of Sports Medicine, 51, 22, pp. 1583-1591, (2017); James R., Kesturu G., Balian G., Et al., Tendon: Biology, biomechanics, repair, growth factors, and evolving treatment options, The Journal of Hand Surgery., 33, pp. 102-112, (2008); Kvist J., Silbernagel K.G., Fear of movement and reinjury in sports medicine: Relevance for rehabilitation and return to sport, Physical Therapy, 102, 2, (2022); Lee J.C., Mitchell A.W., Healy J.C., Imaging of muscle injury in the elite athlete, British Journal of Radiology, 85, 1016, pp. 1173-1185, (2012); Liu S.H., Yang R.S., al-Shaikh R., Et al., Collagen in tendon, ligament, and bone healing. A current review, Clinical Orthopaedics and Related Research, 318, pp. 265-278, (1995); Macdonald B., McAleer S., Kelly S., Chakraverty R., Johnston M., Pollock N., Hamstring rehabilitation in elite track and field athletes: Applying the British athletics muscle injury classification in clinical practice, British Journal of Sports Medicine, 53, 23, pp. 1464-1473, (2019); Macdonald B., O'Neill J., Pollock N., Et al., The single-leg Roman chair hold is more effective than the Nordic hamstring curl in improving hamstring strength-endurance in Gaelic footballers with previous hamstring injury, The Journal of Strength & Conditioning Research, 33, pp. 3302-3308, (2018); van der Made A.D., Almusa E., Reurink G., Et al., Intramuscular tendon injury is not associated with an increased hamstring reinjury rate within 12 months after return to play, British Journal of Sports Medicine, 52, pp. 1261-1266, (2018); van der Made A.D., Almusa E., Whiteley R., Et al., Intramuscular tendon involvement on MRI has limited value for predicting time to return to play following acute hamstring injury, British Journal of Sports Medicine, 52, pp. 83-88, (2018); Matinlauri A., Alcaraz P.E., Freitas T.T., Mendiguchia J., Abedin-Maghanaki A., Castillo A., Martinez-Ruiz E., Carlos-Vivas J., Cohen D.D., A comparison of the isometric force fatigue-recovery profile in two posterior chain lower limb tests following simulated soccer competition, PLoS One, 14, 5, (2019); McAuley S., Dobbin N., Morgan C., Goodwin P.C., Predictors of time to return to play and re-injury following hamstring injury with and without intramuscular tendon involvement in adult professional footballers: A retrospective cohort study, Journal of Science and Medicine in Sport, 25, 3, pp. 216-221, (2022); McCall A., Nedelec M., Carling C., Et al., Reliability and sensitivity of a simple isometric posterior lower limb muscle test in professional football players, Journal of Sports Science, 33, pp. 1298-1304, (2015); Nedelec M., McCall A., Carling C., Legall F., Berthoin S., Dupont G., The influence of soccer playing actions on the recovery kinetics after a soccer match, The Journal of Strength & Conditioning Research, 28, 6, pp. 1517-1523, (2014); Paul D.J., Bradley P.S., Nassis G.P., Factors affecting match running performance of elite soccer players: Shedding some light on the complexity, International Journal of Sports Physiology and Performance, 10, 4, pp. 516-519, (2015); Pollock N., James S.L., Lee J.C., Chakraverty R., British athletics muscle injury classification: A new grading system, British Journal of Sports Medicine, 48, 18, pp. 1347-1351, (2014); Pollock N., Patel A., Chakraverty J., Et al., Time to return to full training is delayed and recurrence rate is higher in intratendinous ('c') acute hamstring injury in elite track and field athletes: Clinical application of the British athletics muscle injury classification, British Journal of Sports Medicine, 50, pp. 305-310, (2016); Schache A.G., Dorn T.W., Blanch P.D., Brown N.A., Pandy M.G., Mechanics of the human hamstring muscles during sprinting, Medicine & Science in Sports & Exercise, 44, 4, pp. 647-658, (2012); Schaefer L.V., Bittmann F.N., Are there two forms of isometric muscle action? Results of the experimental study support a distinction between a holding and a pushing isometric muscle function, BMC Sports Science, Medicine and Rehabilitation., 9, (2017); Schaefer L.V., Bittmann F.N., Coherent behaviour of neuromuscular oscillations between isometrically interacting subjects: Experimental study utilizing wavelet coherence analysis of mechanomyographic and mechanotendographic signals, Scientific Reports, 8, 15456, pp. 1-10, (2018); Screen H.R.C., Bader D.L., Lee D.A., Shelton J.C., Local strain measurement within tendon, Strain, 40, pp. 157-163, (2014); Shamji R., James S.L.J., Botchu R., Et al., Association of the British Athletic Muscle Injury Classification and anatomic location with return to full training and reinjury following hamstring injury in elite football, BMJ Open Sport & Exercise Medicine, 7, (2021); Stares J.J., Dawson B., Peeling P., Heasman J., Rogalski B., Fahey-Gilmour J., Dupont G., Drew M.K., Welvaert M., Toohey L., Subsequent injury risk is elevated above baseline after return to play: A 5-year prospective study in elite Australian football, The American Journal of Sports Medicine, 47, 9, pp. 2225-2231, (2019); Taberner M., Allen T., Cohen D.D., Progressing rehabilitation after injury: Consider the 'control-chaos continuum, British Journal of Sports Medicine, 53, 18, pp. 1132-1136, (2019); Taberner M., Allen T., Cohen D.D., Adapting the high chaos phase of the ‘control-chaos continuum’: A bridge to team training, Sports Performance and Scientific Reports, 109, pp. 1-6, (2020); Taberner M., Allen T., O'keefe J., Cohen D.D., Contextual considerations using the 'control-chaos continuum' for return to sport in elite football - Part 1: Load planning, Physical Therapy in Sport, 53, pp. 67-74, (2022); Taberner M., Cohen D.D., Physical preparation of the football player with an intramuscular hamstring tendon tear: Clinical perspective with video demonstrations, British Journal of Sports Medicine, 52, 19, pp. 1275-1278, (2018); Taberner M., Cohen D.D., Carter A., Windt J.; Taberner M., Distin S., Chance O., Cohen D.D., Ardern C.L., Clinical pearls on how practitioners can best support elite soccer players to return to peak performance after injury, JOSPT Cases, 1, 3, pp. 126-128, (2021); Taberner M., Haddad F.S., Dunn A., Newall A., Parker L., Betancur E., Cohen D.D., Managing the return to sport of the elite footballer following semimembranosus reconstruction, BMJ Open Sport & Exercise Medicine, 26, 1, (2020); Taberner M., O'keefe J., Cohen D.D., The sliding leg curl, Strength and Conditioning Journal, 38, 3, pp. 117-121, (2016); Taberner M., O'Keefe J., Flower D., Phillips J., Close G., Cohen D.D., Richter C., Carling C., Interchangeability of position tracking technologies; can we merge the data?, Science and Medicine in Football, 4, 1, pp. 76-81, (2020); Taberner M., O'keefe J., Richter C., Clarke N., Cohen D.D., Influence of training load upon isometric posterior chain strength in elite football players: A seasonal observation, Book of abstracts of the 23rd annual congress of the European college of sports science - 4th-7th july 2018, Dublin - Ireland, (2018); Wang J.H.C., Mechanobiology of tendon, Journal of Biomechanics, 39, (2006); Whiteley R., Massey A., Gabbett T., Blanch P., Cameron M., Conlan G., Ford M., Williams M., Match high-speed running distances are often suppressed after return from hamstring strain injury in professional footballers, Sport Health, 13, 3, pp. 290-295, (2021)","M. Taberner; 5 Pear Tree Farm Barns, Chelford Road, Marthall, Knutsford, WA16 8SU, United Kingdom; email: matthewtaberner@btinternet.com","","Churchill Livingstone","1466853X","","PTSHB","35752044","English","Phys. Ther. Sport","Article","Final","","Scopus","2-s2.0-85132722025" "Martínez T.C.; Lluch E.; Torres-Cueco R.; Pecos-Martín D.; McConnell J.","Martínez, Tomás Coloma (57206258648); Lluch, Enrique (55768021700); Torres-Cueco, Rafael (55319483200); Pecos-Martín, Daniel (35778722800); McConnell, Jenny (7203041025)","57206258648; 55768021700; 55319483200; 35778722800; 7203041025","Concurrent Criterion-related Validity, Reliability, and Responsiveness to Treatment of the Figure-of-Four Position for Measurement of Anterior Hip Joint Structures Tightness","2018","Journal of Manipulative and Physiological Therapeutics","41","9","","780","788","8","1","10.1016/j.jmpt.2018.04.004","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85061640277&doi=10.1016%2fj.jmpt.2018.04.004&partnerID=40&md5=0ea5163b95ff79a1afaa7985e4221367","Levante U.D., Valencia, Spain; Department of Physical Therapy, University of Valencia, Valencia, Spain; Department of Physical Therapy, Universidad de Alcalá, Alcalá de Henares, Spain; Centre for Sports Medicine, University of Melbourne, Melbourne, Victoria, Australia","Martínez T.C., Levante U.D., Valencia, Spain; Lluch E., Department of Physical Therapy, University of Valencia, Valencia, Spain; Torres-Cueco R., Department of Physical Therapy, University of Valencia, Valencia, Spain; Pecos-Martín D., Department of Physical Therapy, Universidad de Alcalá, Alcalá de Henares, Spain; McConnell J., Centre for Sports Medicine, University of Melbourne, Melbourne, Victoria, Australia","Objective: The objective of this study was to examine the intra- and intertester reliability, concurrent criterion-related validity, and responsiveness to treatment of the “figure-of-four” position. Methods: A total of 52 asymptomatic male soccer players participated in this study. The intraclass correlation coefficient (2, 1) was used to determine intra- and intertester reliability of the figure-of-four position. Pearson product moment correlation coefficients examining the association between the figure-of-four position and goniometric measurements of hip extension and external rotation were used to establish concurrent validity. To evaluate responsiveness to treatment, the figure-of-four position was assessed by a blinded examiner before and immediately after the application of a stretching technique or control intervention. Results: Excellent reliability (intraclass correlation coefficient > 0.75) was obtained for both intra- and intertester reliability of the figure-of-four position. Overall, the figure-of-four position and goniometric measurements of both hip extension and external rotation were significantly correlated. However, no significant treatment effects were observed for the figure-of-four position. Conclusion: The results of this study demonstrated that the figure-of-four position is a reliable and valid way to obtain information on tightness of anterior hip joint structures in male soccer players. However, responsiveness to treatment of the figure-of-four position should be questioned. © 2018","Hip Joint; Muscle Stretching Exercises; Range of Motion, Articular; Reproducibility of Results","Adult; Biomechanical Phenomena; Female; Hip Joint; Humans; Male; Muscle, Skeletal; Range of Motion, Articular; Reproducibility of Results; Rotation; Soccer; adult; article; concurrent validity; correlation coefficient; criterion related validity; hip; human; male; range of motion; reliability; reproducibility; rotation; soccer player; stretching exercise; biomechanics; female; hip; joint characteristics and functions; physiology; reproducibility; skeletal muscle; soccer; validation study","McConnell J., Recalcitrant chronic low back and leg pain–a new theory and different approach to management, Man Ther, 7, 4, pp. 183-192, (2002); Harris-Hayes M., Sahrmann S.A., Norton B.J., Salsich G.B., Diagnosis and management of a patient with knee pain using the movement system impairment classification system, J Orthop Sports Phys Ther, 38, 4, pp. 203-213, (2008); 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Myers J.B., Laudner K.G., Pasquale M.R., Bradley J.P., Lephart S.M., Glenohumeral range of motion deficits and posterior shoulder tightness in throwers with pathologic internal impingement, Am J Sports Med, 34, 3, pp. 385-391, (2006); Muraki T., Yamamoto N., Zhao K.D., Et al., Effect of posteroinferior capsule tightness on contact pressure and area beneath the coracoacromial arch during pitching motion, Am J Sports Med, 38, 3, pp. 600-607, (2010); Izumi T., Aoki M., Muraki T., Hidaka E., Miyamoto S., Stretching positions for the posterior capsule of the glenohumeral joint: strain measurement using cadaver specimens, Am J Sports Med, 36, 10, pp. 2014-2022, (2008); Borstad J.D., Dashottar A., Quantifying strain on posterior shoulder tissues during 5 simulated clinical tests: a cadaver study, J Orthop Sports Phys Ther, 41, 2, pp. 90-99, (2011); Ryan E.D., Beck T.W., Herda T.J., Et al., The time course of musculotendinous stiffness responses following different durations of passive stretching, J Orthop Sports Phys Ther, 38, 10, pp. 632-639, (2008); Light K.E., Nuzik S., Personius W., Barstrom A., Low-load prolonged stretch vs. high-load brief stretch in treating knee contractures, Phys Ther, 64, 3, pp. 330-333, (1984); Usuba M., Akai M., Shirasaki Y., Miyakawa S., Experimental joint contracture correction with low torque–long duration repeated stretching, Clin Orthop Relat Res, 456, pp. 70-78, (2007); Weppler C.H., Magnusson S.P., Increasing muscle extensibility: a matter of increasing length or modifying sensation?, Phys Ther, 90, 3, pp. 438-449, (2010); Konrad A., Tilp M., Increased range of motion after static stretching is not due to changes in muscle and tendon structures, Clin Biomech (Bristol, Avon), 29, 6, pp. 636-642, (2014); Magnusson S.P., Passive properties of human skeletal muscle during stretch maneuvers. A review, Scand J Med Sci Sports, 8, 2, pp. 65-77, (1998); Harvey L., Herbert R., Crosbie J., Does stretching induce lasting increases in joint ROM? A systematic review, Physiother Res Int, 7, 1, pp. 1-13, (2002)","E. Lluch; Department of Physical Therapy, University of Valencia, Gascó Oliag 5, 46010, Spain; email: enrique.lluch@uv.es","","Mosby Inc.","01614754","","JMPTD","30791995","English","J. Manip. Physiol. Ther.","Article","Final","","Scopus","2-s2.0-85061640277" "Alanen A.-M.; Barrons Z.; Jordan M.J.; Ferber R.; Pasanen K.","Alanen, Aki-Matti (57222658165); Barrons, Zachary (57210153804); Jordan, Matthew J (24773067800); Ferber, Reed (56212171400); Pasanen, Kati (23568423600)","57222658165; 57210153804; 24773067800; 56212171400; 23568423600","Between-day reliability of inertial measurement unit parameters during soccer-specific change of direction test","2024","International Journal of Sports Science and Coaching","19","3","","1050","1057","7","0","10.1177/17479541231196733","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85169661542&doi=10.1177%2f17479541231196733&partnerID=40&md5=5d108d7695778d25f17bdc3dc9ec10a9","Integrative Neuromuscular Sport Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Canada; Sport Injury Prevention Research Center, Faculty of Kinesiology, University of Calgary, Calgary, Canada; Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Canada; Faculty of Kinesiology, University of Calgary, Calgary, Canada; Running Injury Clinic, University of Calgary, Calgary, Canada; Faculty of Nursing, Cumming School of Medicine, University of Calgary, Calgary, Canada; Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Canada; McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, Canada; Tampere Research Center of Sports Medicine, UKK Institute, Tampere, Finland","Alanen A.-M., Integrative Neuromuscular Sport Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Canada, Sport Injury Prevention Research Center, Faculty of Kinesiology, University of Calgary, Calgary, Canada; Barrons Z., Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Canada; Jordan M.J., Integrative Neuromuscular Sport Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Canada, Faculty of Kinesiology, University of Calgary, Calgary, Canada; Ferber R., Faculty of Kinesiology, University of Calgary, Calgary, Canada, Running Injury Clinic, University of Calgary, Calgary, Canada, Faculty of Nursing, Cumming School of Medicine, University of Calgary, Calgary, Canada; Pasanen K., Integrative Neuromuscular Sport Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Canada, Sport Injury Prevention Research Center, Faculty of Kinesiology, University of Calgary, Calgary, Canada, Faculty of Kinesiology, University of Calgary, Calgary, Canada, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Canada, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, Canada, Tampere Research Center of Sports Medicine, UKK Institute, Tampere, Finland","This study assessed the between-day reliability of change of direction (COD) biomechanics and speed in youth soccer players using inertial measurement units (IMUs) and high-speed video. A soccer-specific COD test including a 180° pivot turn was performed in both directions by 15 elite female (age: 15.3 ± 0.6 years; height 162.6 ± 5.5 cm; body mass: 56.7 ± 7.1 kg) and 22 elite male (age: 15.4 ± 0.5 years; height 169 ± 5.9 cm; body mass: 58.5 ± 8.5 kg) youth soccer players in two consecutive days. The reliability of the variables was quantified by using intra-class correlation coefficient (ICC) analysis with limits of agreement (LoA) and Bland–Altman plots. Based on the results, neither peak resultant acceleration (PRA) nor peak angular velocity (PAV) during final foot contact was sufficiently reliable for 180° pivot turn biomechanics (poor reliability, < 0.5), but the reliability of players’ running time to turn and total time was between acceptable to good (0.9>; > 0.7). However, when analyzing females and males separately, the PRA and angular velocity ICC's for females had poor to acceptable reliability, when turning left, and were statistically different from males (Z-score > 1.96). Acceptable to good reliability with reasonable (max 15% difference) LoA implies that speed measures in different phases of COD could reliably reproduce individual differences in 180° pivot turn COD speed. Sex-related differences in repeatability of acceleration and angular velocity call for more comprehensive research in the future. PAV and PRA would not be recommended for the purpose of analyzing individual repeatability of specific steps of COD movement. © The Author(s) 2023.","Acceleration; angular velocity; association football; biomechanics; pivot turn; youth sport","","Kadlubowski B., Keiner M., Hartmann H., Et al., The relationship between change of direction tests in elite youth soccer players, Sports, 7; Nimphius S., Callaghan S., Bezodis N., Et al., Change of direction and agility tests: challenging our current measures of performance, Strength Cond J, 40, (2018); Sheppard J.M., Young W.B., Agility literature review: classifications, training and testing, J Sports Sci, 24, pp. 919-932; Young W.B., Dawson B., Henry G.J., Agility and change-of-direction speed are independent skills: implications for training for agility in invasion sports, Int J Sports Sci Coach, 10, pp. 159-169; Reilly T., Williams A.M., Nevill A., Et al., A multidisciplinary approach to talent identification in soccer, J Sports Sci, 18, pp. 695-702, (2000); Lyle M.A., Valero-Cuevas F.J., Gregor R.J., Et al., Lower extremity dexterity is associated with agility in adolescent soccer athletes: dexterity predicts agility in soccer athletes, Scand J Med Sci Sports, 25, pp. 81-88; Pojskic H., Aslin E., Krolo A., Et al., Importance of reactive agility and change of direction speed in differentiating performance levels in junior soccer players: reliability and validity of newly developed soccer-specific tests, Front Physiol, 9; Sariati D., Hammami R., Chtara M., Et al., Change-of-direction performance in elite soccer players: preliminary analysis according to their playing positions, Int J Environ Res Public Health, 17; Paul D.J., Gabbett T.J., Nassis G.P., Agility in team sports: testing, training and factors affecting performance, Sports Med, 46, pp. 421-442; Loturco I., Jeffreys I., Abad C.C.C., Et al., Change-of-direction, speed and jump performance in soccer players: a comparison across different age-categories, J Sports Sci; Forsman H., Grasten A., Blomqvist M., Et al., Development of perceived competence, tactical skills, motivation, technical skills, and speed and agility in young soccer players, J Sports Sci, 34, pp. 1311-1318; Young W., Rayner R., Talpey S., It’s time to change direction on agility research: a call to action, Sports Med - Open, 7; Altmann S., Ringhof S., Neumann R., Et al., Validity and reliability of speed tests used in soccer: a systematic review, PLoS One, 14; Dugdale J.H., Sanders D., Hunter A.M., Reliability of change of direction and agility assessments in youth soccer players, Sports, 8; Sporis G., Jukic I., Milanovic L., Et al., Reliability and factorial validity of agility tests for soccer players, J Strength Cond Res, 24, pp. 679-686; Nimphius S., Callaghan S.J., Spiteri T., Et al., Change of direction deficit: a more isolated measure of change of direction performance than total 505 time, J Strength Cond Res, 30, pp. 3024-3032; King E., Richter C., Franklyn-Miller A., Et al., Biomechanical but not timed performance asymmetries persist between limbs 9 months after ACL reconstruction during planned and unplanned change of direction, J Biomech, 81, pp. 93-103; Condello G., Kernozek T.W., Tessitore A., Et al., Biomechanical analysis of a change-of-direction task in college soccer players, Int J Sports Physiol Perform, 11, pp. 96-101; Dos'Santos T., Thomas C., Jones P.A., The effect of angle on change of direction biomechanics: comparison and inter-task relationships, J Sports Sci, 39, pp. 2618-2631; Chambers R., Gabbett T.J., Cole M.H., Et al., The use of wearable microsensors to quantify sport-specific movements, Sports Med, 45, pp. 1065-1081; Hughes T., Jones R.K., Starbuck C., Et al., The value of tibial mounted inertial measurement units to quantify running kinetics in elite football (soccer) players. A reliability and agreement study using a research orientated and a clinically orientated system, J Electromyogr Kinesiol, 44, pp. 156-164; Chia L., Andersen J.T., McKay M.J., Et al., Evaluating the validity and reliability of inertial measurement units for determining knee and trunk kinematics during athletic landing and cutting movements, J Electromyogr Kinesiol, 60; Zeng Z., Liu Y., Hu X., Et al., Validity and reliability of inertial measurement units on lower extremity kinematics during running: a systematic review and meta-analysis, Sports Med - Open, 8; Nobari H., Goncalves L.G., Aquino R., Et al., Wearable inertial measurement unit to measure external load: a full-season study in professional soccer players, Appl Sci, 12; Burland J.P., Outerleys J.B., Lattermann C., Et al., Reliability of wearable sensors to assess impact metrics during sport-specific tasks, J Sports Sci, 39, pp. 406-411; Armitage M., Beato M., McErlain-Naylor S.A., Inter-unit reliability of IMU Step metrics using IMeasureU Blue Trident inertial measurement units for running-based team sport tasks, J Sports Sci, 39, pp. 1512-1518; Marris J., Barrett S., Abt G., Et al., Quantifying technical actions in professional soccer using foot-mounted inertial measurement units, Sci Med Footb, 6, pp. 203-214; Balloch A.S., Meghji M., Newton R.U., Et al., Assessment of a novel algorithm to determine change-of-direction angles while running using inertial sensors, J Strength Cond Res, 34, pp. 134-144; Nedergaard N.J., Kersting U., Lake M., Using accelerometry to quantify deceleration during a high-intensity soccer turning manoeuvre, J Sports Sci, 32, pp. 1897-1905, (2014); Wundersitz D.W.T., Gastin P.B., Robertson S., Et al., Validation of a trunk-mounted accelerometer to measure peak impacts during team sport movements, Int J Sports Med, 36, pp. 742-746, (2015); Alanen A., Raisanen A., Benson L., Et al., The use of inertial measurement units for analyzing change of direction movement in sports: a scoping review, Int J Sports Sci Coach; Sheerin K.R., Reid D., Besier T.F., The measurement of tibial acceleration in runners—a review of the factors that can affect tibial acceleration during running and evidence-based guidelines for its use, Gait Posture, 67, pp. 12-24; Benson L.C., Ahamed N.U., Kobsar D., Et al., New considerations for collecting biomechanical data using wearable sensors: number of level runs to define a stable running pattern with a single IMU, J Biomech, (2019); Abdollahi M., Kuber P.M., Shiraishi M., Et al., Kinematic analysis of 360° turning in stroke survivors using wearable motion sensors, Sensors, 22; Khobkhun F., Hollands M.A., Richards J., Et al., Can we accurately measure axial segment coordination during turning using inertial measurement units (IMUs)?, Sensors, 20; Pasanen K., Rossi M.T., Parkkari J., Et al., Predictors of lower extremity injuries in team sports (PROFITS-study): a study protocol, BMJ Open Sport Exerc Med, 1; Atkinson G., Nevill A.M., Statistical methods for assessing measurement error (reliability) in variables relevant to sports medicine, Sports Med, 26, pp. 217-238, (1998); Benson L.C., Raisanen A.M., Clermont C.A., Et al., Is this the real life, or is this just laboratory? A scoping review of IMU-based running gait analysis, Sensors, 22; Ahamed N.U., Benson L.C., Clermont C.A., Et al., New considerations for collecting biomechanical data using wearable sensors: how does inclination influence the number of runs needed to determine a stable running gait pattern?, Sensors, 19; Bishop C., Abbott W., Brashill C., Et al., Bilateral vs. unilateral countermovement jumps: comparing the magnitude and direction of asymmetry in elite academy soccer players, J Strength Cond Res; Bishop C., Lake J., Loturco I., Et al., Interlimb asymmetries: the need for an individual approach to data analysis, J Strength Cond Res, 35, pp. 695-701; Simons C., Bradshaw E.J., Reliability of accelerometry to assess impact loads of jumping and landing tasks, Sports Biomech, 15, pp. 1-10; Ryan C., Uthoff A., McKenzie C., Et al., Traditional and modified 5-0-5 change of direction test: normative and reliability analysis, Strength Cond J, 44, pp. 22-37; Malina R.M., Cumming S.P., Rogol A.D., Et al., Bio-banding in youth sports: background, concept, and application, Sports Med, 49, pp. 1671-1685","A.-M. Alanen; Integrative Neuromuscular Sport Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Canada; email: akimatti.alanen@ucalgary.ca","","SAGE Publications Inc.","17479541","","","","English","Int. J. Sports. Sci. Coaching","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85169661542" "Talia A.J.; Brown R.","Talia, Adrian J. (56471758300); Brown, Rick (57197193746)","56471758300; 57197193746","Foot and ankle injuries in women's soccer: epidemiology and risk factors","2024","Orthopaedics and Trauma","38","3","","162","168","6","0","10.1016/j.mporth.2024.03.008","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85192102218&doi=10.1016%2fj.mporth.2024.03.008&partnerID=40&md5=acf125d267432808edd39833b502796d","Department of Foot & Ankle Surgery, Nuffield Orthopaedic Centre, Oxford University Hospitals NHS Trust, United Kingdom; Department of Foot & Ankle Surgery, Nuffield Orthopaedic Centre, Oxford University Hospitals NHS Trust, United Kingdom","Talia A.J., Department of Foot & Ankle Surgery, Nuffield Orthopaedic Centre, Oxford University Hospitals NHS Trust, United Kingdom, Department of Foot & Ankle Surgery, Nuffield Orthopaedic Centre, Oxford University Hospitals NHS Trust, United Kingdom; Brown R., Department of Foot & Ankle Surgery, Nuffield Orthopaedic Centre, Oxford University Hospitals NHS Trust, United Kingdom, Department of Foot & Ankle Surgery, Nuffield Orthopaedic Centre, Oxford University Hospitals NHS Trust, United Kingdom","This article provides a narrative summary of current understanding of football injuries in female athletes. We summarize the epidemiological data and compare differences between levels of competition, from amateur through professional. Underlying intrinsic risk factors such as anatomic, biomechanics and endocrine factors are outlined. Extrinsic risk factors such as football boot design and playing surface are detailed. We briefly report on the outcomes of women's injury prevention programmes and their success in reducing ankle injuries. © 2024 Elsevier Ltd","Ankle; female; foot; football; sports injuries","hormone; accident prevention; anatomical location; ankle injury; ankle plantarflexion angle; Article; biomechanics; bone density; comparative study; disease predisposition; endocrine system; epidemiological data; foot injury; forefoot; human; kinematics; ligament laxity; musculoskeletal system parameters; professional athlete; risk factor; sex difference; soccer; sport injury; sports medicine","Federation Internationale de Football Association (FIFA), Women's football strategy, (2018); Union of European Football Associations (UEFA), Women's football across the national associations 2016/17, (2017); Union of European Football Associations (UEFA), The business case for women's football, (2022); Federation Internationale de Football Association (FIFA), Setting the pace: FIFA benchmarking report women's football, (2023); 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Part 2: training injuries, Br J Sports Med, 41, pp. i27-i32, (2007); McKay C.D., Steffen K., Romiti M., Et al., The effect of coach and player injury knowledge, attitudes and beliefs on adherence to the FIFA 11+ programme in female youth soccer, Br J Sports Med, 48, pp. 1281-1286, (2014); Crossley K.M., Patterson B.E., Culvenor A.G., Et al., Making football safer for women: a systematic review and meta-analysis of injury prevention programmes in 11 773 female football (soccer) players, Br J Sports Med, 54, pp. 1089-1098, (2020); Magoshi H., Hoshiba T., Tohyama M., Et al., Effect of the FIFA 11+ injury prevention program in collegiate female football players over three consecutive seasons, Scandinavian Med Sci Sports, 33, pp. 1494-1508, (2023); Soligard T., Nilstad A., Steffen K., Et al., Compliance with a comprehensive warm-up programme to prevent injuries in youth football, Br J Sports Med, 44, pp. 787-793, (2010); Dalen-Lorentsen T., Bjorneboe J., Clarsen B., Et al., Does load management using the acute:chronic workload ratio prevent health problems? A cluster randomised trial of 482 elite youth footballers of both sexes, Br J Sports Med, 55, pp. 108-114, (2021)","","","Churchill Livingstone","18771327","","","","English","Orthop. Trauma","Article","Final","","Scopus","2-s2.0-85192102218" "Chen Y.; Lo T.-Y.; Xu F.; Chang J.-H.","Chen, Yo (59074871900); Lo, Tang-Yun (57208056805); Xu, Fei (57225984952); Chang, Jia-Hao (8072971800)","59074871900; 57208056805; 57225984952; 8072971800","Biomechanical characteristics for identifying the cutting direction of professional soccer players","2021","Applied Sciences (Switzerland)","11","16","7193","","","","1","10.3390/app11167193","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85112471535&doi=10.3390%2fapp11167193&partnerID=40&md5=fb8090a1974e04eabee540646af80202","Department of Physical Education, Pingtung University, No. 1, Linsen Rd., Pingtung, 900393, Taiwan; Office of Physical Education, Tamkang University, No. 151, Yingzhuan Rd., Tamsui Dist., New Taipei, 251301, Taiwan; School of Physical Education and Health, Hangzhou Normal University, No. 2318, Yuhangtang Rd., Yuhang District, Hangzhou, 311121, China; Department of Physical Education and Sport Sciences, National Taiwan Normal University, No. 88, Sec. 4, Tingzhou Rd., Wenshan Dist., Taipei, 116, Taiwan","Chen Y., Department of Physical Education, Pingtung University, No. 1, Linsen Rd., Pingtung, 900393, Taiwan; Lo T.-Y., Office of Physical Education, Tamkang University, No. 151, Yingzhuan Rd., Tamsui Dist., New Taipei, 251301, Taiwan; Xu F., School of Physical Education and Health, Hangzhou Normal University, No. 2318, Yuhangtang Rd., Yuhang District, Hangzhou, 311121, China; Chang J.-H., Department of Physical Education and Sport Sciences, National Taiwan Normal University, No. 88, Sec. 4, Tingzhou Rd., Wenshan Dist., Taipei, 116, Taiwan","(1) Background: To understand the movement characteristics of soccer players when cutting in two directions (45◦ for the right and left cutting movements) through biomechanical analysis of the lower limbs to identify the cutting direction of the attacker; (2) Methods: A motion analysis system was used to capture the movements of 12 male professional soccer players dribbling to the left and right. Kinematics of the players’ cutting were analyzed, and the paired t-test was used for statistics, with a significant level of α = 0.05; (3) Results: When cutting towards the right, the height of the hip joint during the run-up was low (effect size, ES = 0.41, p = 0.031) at 91.8 ± 7.0 cm. When cutting towards the left, the value was 94.6 ± 6.7 cm. While cutting, the front foot was abducted by 4.3 ± 4.0◦ at landing when cutting towards the right and adducted by 2.7 ± 5.1◦ when cutting towards the left (ES = 0.38, p = 0.003); (4) Conclusions: When the attacker carries out the cutting action while approaching the defender, the cutting direction may be predicted by observing the attacker’s hip and foot movements. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.","Attack; Defense; Football","","Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, J. Sports Sci. Med, 1, pp. 72-79, (2002); Scurr J.C., Abbott V., Ball N., Quadriceps EMG muscle activation during accurate soccer instep kicking, J. Sports Sci, 29, pp. 247-251, (2011); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med. Sci. Sports Exer, 34, pp. 2028-2036, (2003); Lees A., Nolan L., The biomechanics of soccer: A review, J. Sports Sci, 16, pp. 211-234, (1998); Szwarc A., The efficiency model of soccer player’s actions in cooperation with other team players at the FIFA world cup, Hum. Mov. Sci, 9, pp. 56-61, (2008); Lebed F., A dolphin only looks like a fish: Players’ behaviour analysis is not enough for game understanding in the light of the systems approach—A response to the reply by Mcgarry and Franks, Eur. J. Sport Sci, 7, pp. 55-62, (2007); Rojas F.J., Cepero M., Ona A., Gutierrez M., Kinematic adjustments in the basketball jump shot against an opponent, Ergonomics, 43, pp. 1651-1660, (2000); Davids K.W., Button C., Bennett S.J., Dynamics of Skill Acquisition: A Constraints-Led Approach, (2008); Cowley H.R., Ford K.R., Myer G.D., Kernozek T.W., Hewett T.E., Differences in neuromuscular strategies between landing and cutting tasks in female basketball and soccer athletes, J. Athl. Train, 41, pp. 67-73, (2006); Malinzak R.A., Colby S.M., Kirkendall D.T., Yu B., Garrett W.E., A comparison of knee joint motion patterns between men and women in selected athletic tasks, Clin. Biomech, 16, pp. 438-445, (2001); Nagano T., Kato T., Fukuda T., Visual search strategies of soccer players in one-on-one defensive situations on the field, Percept. Motor Skill, 99, pp. 968-974, (2004); Estevan I., Alvarez O., Falco C., Molinagarcia J., Castillo I., Impact force and time analysis influenced by execution distance in a roundhouse kick to the head in taekwondo, J. Strength Cond. Res, 25, pp. 2851-2856, (2011); Ge W., Cavanagh P.R., ISB recommendations for standardization in the reporting of kinematic data, J. Biomech, 28, pp. 1257-1261, (1995); Mackinnon C.D., Winter D.A., Control of whole body balance in the frontal plane during human walking, J. Biomech, 26, pp. 633-644, (1993); Houck J.R., Duncan A., De Haven K.E., Comparison of frontal plane trunk kinematics and hip and knee moments during anticipated and unanticipated walking and side step cutting tasks, Gait Posture, 24, pp. 314-322, (2006); Huges C.H., The Football Association Book of Soccer—Tactics and Skills, (1998); Gibson J.J., The ecological approach to the visual perception of pictures, Leonardo, 11, pp. 227-235, (1978); Wade M.G., Whiting H.T.A., Motor Development in Children: Aspects of Coordination and Control, (1986); Rasool J., George K., The impact of single-leg dynamic balance training on dynamic stability, Phys. Ther. Sport, 8, pp. 177-184, (2007); Kim J.H., Lee K.K., Kong S.J., An K.O., Jeong J.H., Lee Y.S., Effect of anticipation on lower extremity biomechanics during side-and cross-cutting maneuvers in young soccer players, Am. J. Sport Med, 42, pp. 1985-1992, (2014); Lopes J.E., Araujo D., Davids K., Investigative trends in understanding penalty-kick performance in association football: An ecological dynamics perspective, Sports Med, 44, pp. 1-7, (2014); Navia J.A., Kamp J.V.D., Ruiz L.M., On the use of situation and body information in goalkeeper actions; during a soccer penalty kick, Int. J. Sport Psychol, 44, pp. 234-251, (2013)","J.-H. Chang; Department of Physical Education and Sport Sciences, National Taiwan Normal University, Taipei, No. 88, Sec. 4, Tingzhou Rd., Wenshan Dist., 116, Taiwan; email: jhchang@ntnu.edu.tw","","MDPI AG","20763417","","","","English","Appl. Sci.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85112471535" "Ford K.R.; Nguyen A.-D.; Westbrook A.E.; Mulrey C.R.; Taylor J.B.","Ford, Kevin Ray (7102539333); Nguyen, Anh-Dung (12805987900); Westbrook, Audrey E. (57194184121); Mulrey, Colleen R. (57194193458); Taylor, Jeffrey B. (55829673200)","7102539333; 12805987900; 57194184121; 57194193458; 55829673200","Footwear-induced changes in ankle biomechanics during unanticipated side-step cutting in female soccer players","2017","Footwear Science","9","","","S68","S70","2","1","10.1080/19424280.2017.1314343","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019101025&doi=10.1080%2f19424280.2017.1314343&partnerID=40&md5=6fcd34aff69484f75bccd951831e9593","Department of Physical Therapy, High Point University, High Point, NC, United States; Department of Athletic Training, High Point University, High Point, NC, United States; Department of Exercise Science, High Point University, High Point, NC, United States","Ford K.R., Department of Physical Therapy, High Point University, High Point, NC, United States; Nguyen A.-D., Department of Athletic Training, High Point University, High Point, NC, United States; Westbrook A.E., Department of Physical Therapy, High Point University, High Point, NC, United States; Mulrey C.R., Department of Exercise Science, High Point University, High Point, NC, United States; Taylor J.B., Department of Physical Therapy, High Point University, High Point, NC, United States","[No abstract available]","cleats; lower extremity biomechanics; sex-specific cleat; side-step cut; soccer","Biomechanics; Ankle biomechanics; cleats; Lower extremity; sex-specific cleat; side-step cut; Soccer player; Football","Althoff K., Hennig E.M., Criteria for gender-specific soccer shoe development, Footwear Science, 6, 2, pp. 89-96, (2014); Ferran N.A., Maffulli N., Epidemiology of sprains of the lateral ankle ligament complex, Foot and Ankle Clinics, 11, 3, pp. 659-662, (2006); Fong D.T., Hong Y., Chan L.-K., Yung P.S.H., Chan K.M., A systematic review on ankle injury and ankle sprain in sports, Sports Medicine, 37, 1, pp. 73-94, (2007); Henning E.M., Sterzing T., The influence of soccer shoe design on playing performance: a series of biomechanical studies, Footwear Science, 1, pp. 3-11, (2010); Hewett T.E., Myer G.D., Ford K.R., Heidt R.S., Colosimo A.J., McLean S.J., Succop P., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes, American Journal of Sports Medicine, 33, 4, pp. 492-501, (2005); Krauss I., Grau S., Maiwald C., Horstmann T., Sex-related differences in foot shape, Ergonomics, 51, 11, pp. 1693-1709, (2008); Kulessa D.J., Footwear Science, (2017)","K.R. Ford; Department of Physical Therapy, High Point University, High Point, United States; email: kford@highpoint.edu","","Taylor and Francis Ltd.","19424280","","","","English","Footwear Sci.","Article","Final","","Scopus","2-s2.0-85019101025" "Palucci Vieira L.H.; Carling C.; Kalva-Filho C.A.; Santinelli F.B.; Velluto L.A.G.; da Silva J.P.; Clemente F.M.; Kellis E.; Barbieri F.A.","Palucci Vieira, Luiz H. (56789595600); Carling, Christopher (23468547100); Kalva-Filho, Carlos A. (55155469800); Santinelli, Felipe B. (57203973419); Velluto, Lorenzo A. G. (57609565900); da Silva, João Pedro (57224179526); Clemente, Filipe M (57209913336); Kellis, Eleftherios (6603815400); Barbieri, Fabio A (35798078800)","56789595600; 23468547100; 55155469800; 57203973419; 57609565900; 57224179526; 57209913336; 6603815400; 35798078800","Recovery of kicking kinematics and performance following repeated high-intensity running bouts in the heat: Can a rapid local cooling intervention help young soccer players?","2023","Journal of Sports Sciences","41","5","","430","440","10","1","10.1080/02640414.2023.2220194","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85161610340&doi=10.1080%2f02640414.2023.2220194&partnerID=40&md5=54d3ee816eb0e763d035160d6cd8b8ad","Human Movement Research Laboratory (MOVI-LAB), Faculty of Sciences, Graduate Program in Movement Sciences, Physical Education Dept, São Paulo State University (Unesp), Bauru, Brazil; FFF Research Centre, French Football Federation, Clairefontaine National Football Centre, Clairefontaine-En-Yvelines, France; Laboratory Sport, Expertise and Performance (EA 7370), French Institute of Sport (INSEP), Paris, France; REVAL Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Hasselt, Belgium; Escola Superior Desporto E Lazer, Instituto Politécnico de Viana Do Castelo, Rua Escola Industrial E Comercial de Nun’álvares, Viana Do Castelo, Portugal; Laboratory of Neuromechanics, Department of Physical Education and Sports Sciences of Serres, Aristotle University of Thessaloniki, Serres, Greece","Palucci Vieira L.H., Human Movement Research Laboratory (MOVI-LAB), Faculty of Sciences, Graduate Program in Movement Sciences, Physical Education Dept, São Paulo State University (Unesp), Bauru, Brazil; Carling C., FFF Research Centre, French Football Federation, Clairefontaine National Football Centre, Clairefontaine-En-Yvelines, France, Laboratory Sport, Expertise and Performance (EA 7370), French Institute of Sport (INSEP), Paris, France; Kalva-Filho C.A., Human Movement Research Laboratory (MOVI-LAB), Faculty of Sciences, Graduate Program in Movement Sciences, Physical Education Dept, São Paulo State University (Unesp), Bauru, Brazil; Santinelli F.B., Human Movement Research Laboratory (MOVI-LAB), Faculty of Sciences, Graduate Program in Movement Sciences, Physical Education Dept, São Paulo State University (Unesp), Bauru, Brazil, REVAL Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Hasselt, Belgium; Velluto L.A.G., Human Movement Research Laboratory (MOVI-LAB), Faculty of Sciences, Graduate Program in Movement Sciences, Physical Education Dept, São Paulo State University (Unesp), Bauru, Brazil; da Silva J.P., Human Movement Research Laboratory (MOVI-LAB), Faculty of Sciences, Graduate Program in Movement Sciences, Physical Education Dept, São Paulo State University (Unesp), Bauru, Brazil; Clemente F.M., Escola Superior Desporto E Lazer, Instituto Politécnico de Viana Do Castelo, Rua Escola Industrial E Comercial de Nun’álvares, Viana Do Castelo, Portugal; Kellis E., Laboratory of Neuromechanics, Department of Physical Education and Sports Sciences of Serres, Aristotle University of Thessaloniki, Serres, Greece; Barbieri F.A., Human Movement Research Laboratory (MOVI-LAB), Faculty of Sciences, Graduate Program in Movement Sciences, Physical Education Dept, São Paulo State University (Unesp), Bauru, Brazil","The effects of a cooling strategy following repeated high-intensity running (RHIR) on soccer kicking performance in a hot environment (>30ºC) were investigated in youth soccer players. Fifteen academy under-17 players participated. In Experiment 1, players completed an all-out RHIR protocol (10×30 m, with 30s intervals). In Experiment 2 (cross-over design), participants performed this running protocol under two conditions: (1) following RHIR 5 minutes of cooling where ice packs were applied to the quadriceps/hamstrings, (2) a control condition involving passive resting. Perceptual measures [ratings of perceived exertion (RPE), pain and recovery], thigh temperature and kick-derived video three-dimensional kinematics (lower limb) and performance (ball speed and two-dimensional placement indices) were collected at baseline, post-exercise and intervention. In Experiment 1, RHIR led to small-to-large impairments (p < 0.03;d = −0.42–-1.83) across perceptual, kinematic and performance measures. In experiment 2, RPE (p < 0.01; Kendall’s W = 0.30) and mean radial error (p = 0.057; η2 = 0.234) increased only post-control. Significant small declines in ball speed were also observed post-control (p < 0.05; d = 0.35). Post-intervention foot centre-of-mass velocity was moderately faster in the cooling compared to control condition (p = 0.04; d = 0.60). In youth soccer players, a short cooling period was beneficial in counteracting declines in kicking performance, in particular ball placement, following intense running activity in the heat. © 2023 Informa UK Limited, trading as Taylor & Francis Group.","accuracy; Cryotherapy; football; heat environment; technique; three-dimensional kinematics","Adolescent; Athletic Performance; Biomechanical Phenomena; Hot Temperature; Humans; Running; Soccer; adolescent; athletic performance; biomechanics; high temperature; human; running; soccer","Algafly A.A., George K.P., Herrington L., The effect of cryotherapy on nerve conduction velocity, pain threshold and pain tolerance, British Journal of Sports Medicine, 41, 6, pp. 365-369, (2007); Aslan A., Acikada C., Guvenc A., Goren H., Hazir T., Ozkara A., Metabolic demands of match performance in young soccer players, Journal of Sports Science and Medicine, 11, 1, pp. 170-179, (2012); Baumeister J., Reinecke K., Schubert M., Schade J., Weiss M., Effects of induced fatigue on brain activity during sensorimotor control, European Journal of Applied Physiology, 112, 7, pp. 2475-2482, (2012); Billaut F., Basset F.A., Effect of different recovery patterns on repeated-sprint ability and neuromuscular responses, Journal of Sports Sciences, 25, 8, pp. 905-913, (2007); Bleakley C.M., Costello J.T., Glasgow P.D., Should athletes return to sport after applying ice? A systematic review of the effect of local cooling on functional performance, Sports Medicine, 42, 1, pp. 69-87, (2012); Bongers C.C., Thijssen D.H., Veltmeijer M.T., Hopman M.T., Eijsvogels T.M., Precooling and percooling (cooling during exercise) both improve performance in the heat: A meta-analytical review, British Journal of Sports Medicine, 49, 6, pp. 377-384, (2015); Brocherie F., Millet G.P., Girard O., Neuro-mechanical and metabolic adjustments to the repeated anaerobic sprint test in professional football players, European Journal of Applied Physiology, 115, 5, pp. 891-903, (2015); Buchheit M., Horobeanu C., Mendez-Villanueva A., Simpson B.M., Bourdon P.C., Effects of age and spa treatment on match running performance over two consecutive games in highly trained young soccer players, Journal of Sports Sciences, 29, 6, pp. 591-598, (2011); Buchheit M., Mendez-Villanueva A., Reliability and stability of anthropometric and performance measures in highly-trained young soccer players: Effect of age and maturation, Journal of Sports Sciences, 31, 12, pp. 1332-1343, (2013); Buchheit M., Mendez-Villanueva A., Changes in repeated-sprint performance in relation to change in locomotor profile in highly-trained young soccer players, Journal of Sports Sciences, 32, 13, pp. 1309-1317, (2014); Buchheit M., Mendez-Villanueva A., Simpson B.M., Bourdon P.C., Match running performance and fitness in youth soccer, International Journal of Sports Medicine, 31, 11, pp. 818-825, (2010); Buchheit M., Mendez-Villanueva A., Simpson B.M., Bourdon P.C., Repeated-sprint sequences during youth soccer matches, International Journal of Sports Medicine, 31, 10, pp. 709-716, (2010); Buono M.J., Jechort A., Marques R., Smith C., Welch J., Comparison of infrared versus contact thermometry for measuring skin temperature during exercise in the heat, Physiological Measurement, 28, 8, pp. 855-859, (2007); Castle P.C., Macdonald A.L., Philp A., Webborn A., Watt P.W., Maxwell N.S., Precooling leg muscle improves intermittent sprint exercise performance in hot, humid conditions, Journal of Applied Physiology, 100, 4, pp. 1377-1384, (2006); Duffield R., Coutts A., McCall A., Burgess D., Pre-cooling for football training and competition in hot and humid conditions, European Journal of Sport Science, 13, 1, pp. 58-67, (2013); Egana M., Jordan L., Moriarty T., A 2.5 min cold water immersion improves prolonged intermittent sprint performance, Journal of Science & Medicine in Sport, 22, 12, pp. 1349-1354, (2019); Fischer J., Van Lunen B.L., Branch J.D., Pirone J.L., Functional performance following an ice bag application to the hamstrings, The Journal of Strength & Conditioning Research, 23, 1, pp. 44-50, (2009); Foster C., Monitoring training in athletes with reference to overtraining syndrome, Medicine & Science in Sports and Exercise, 30, 7, pp. 1164-1168, (1998); Gharbi A., Masmoudi L., Chtourou H., Chaari N., Tabka Z., Effects of recovery mode on physiological and psychological responses and performance of specific skills in young soccer players, The Journal of Sports Medicine and Physical Fitness, 57, 12, pp. 1590-1596, (2017); 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Monks M.R., Compton C.T., Yetman J.D., Power K.E., Button D.C., Repeated sprint ability but not neuromuscular fatigue is dependent on short versus long duration recovery time between sprints in healthy males, Journal of Science & Medicine in Sport, 20, 6, pp. 600-605, (2017); Murray A., Cardinale M., Cold applications for recovery in adolescent athletes: A systematic review and meta analysis, Extreme Physiology and Medicine, 4, 1, (2015); Myrer J.W., Measom G., Durrant E., Fellingham G.W., Cold- and hot-pack contrast therapy: Subcutaneous and intramuscular temperature change, Journal of Athletic Training, 32, 3, pp. 238-241, (1997); Nemet D., Meckel Y., Bar-Sela S., Zaldivar F., Cooper D.M., Eliakim A., Effect of local cold-pack application on systemic anabolic and inflammatory response to sprint-interval training: A prospective comparative trial, European Journal of Applied Physiology, 107, 4, (2009); Nunome H., Ikegami Y., Kozakai R., Apriantono T., Sano S., Segmental dynamics of soccer instep kicking with the preferred and non-preferred leg, Journal of Sports Sciences, 24, 5, pp. 529-541, (2006); Palucci Vieira L.H., Barbieri F.A., Kellis E., Oliveira L., Aquino R., Cunha S., Bedo B., Manechini J., Santiago P., Organisation of instep kicking in young U11 to U20 soccer players, Science and Medicine in Football, 5, 2, pp. 111-120, (2021); Palucci Vieira L.H., Carling C., da Silva J.P., Santinelli F.B., Polastri P.F., Santiago P.R.P., Barbieri F.A., Modelling the relationships between EEG signals, movement kinematics and outcome in soccer kicking, Cognitive Neurodynamics, 16, 6, pp. 1303-1321, (2022); Palucci Vieira L.H., Lastella M., da Silva J.P., Cesario T.A.I., Santinelli F.B., Moretto G.F., Santiago P.R., Barbieri F.A., Low sleep quality and morningness-eveningness scale score may impair ball placement but not kicking velocity in youth academy soccer players, Science and Medicine in Football, 6, 4, pp. 528-538, (2022); Palucci Vieira L.H., Santiago P.R.P., Pinto A., Aquino R., Torres R.D.S., Barbieri F.A., Automatic markerless motion detector method against traditional digitisation for 3-dimensional movement kinematic analysis of ball kicking in soccer field context, International Journal of Environmental Research and Public Health, 19, 3, (2022); Palucci Vieira L.H., Santinelli F.B., Carling C., Kellis E., Santiago P.R.P., Barbieri F.A., Acute effects of warm-up, exercise and recovery-related strategies on assessments of soccer kicking performance: A critical and systematic review, Sports Medicine, 51, 4, pp. 661-705, (2021); Palucci Vieira L.H., Zagatto A., Kalva-Filho C., Moreno V., Santinelli F., Silva J., Santiago P.R.P., Rodrigues S.T., Barbieri F., Post-drop jumps kick potentiation in youth trained soccer players: temporal changes in EMG, kinematics and performance components, SportRxiv, (2022); Paul D.J., Nassis G.P., Physical fitness testing in youth soccer: issues and considerations regarding reliability, validity, and sensitivity, Pediatric Exercise Science, 27, 3, pp. 301-313, (2015); Paul D.J., Tomazoli G., Nassis G.P., Match-related time course of perceived recovery in youth football players, International Journal of Sports Physiology & Performance, 14, 3, pp. 339-342, (2019); Peiffer J.J., Abbiss C.R., Watson G., Nosaka K., Laursen P.B., Effect of cold-water immersion duration on body temperature and muscle function, Journal of Sports Sciences, 27, 10, pp. 987-993, (2009); Peiffer J.J., Abbiss C.R., Watson G., Nosaka K., Laursen P.B., Effect of a 5-min cold-water immersion recovery on exercise performance in the heat, British Journal of Sports Medicine, 44, 6, pp. 461-465, (2010); Perrey S., Racinais S., Saimouaa K., Girard O., Neural and muscular adjustments following repeated running sprints, European Journal of Applied Physiology, 109, 6, pp. 1027-1036, (2010); Pointon M., Duffield R., Cannon J., Marino F.E., Cold application for neuromuscular recovery following intense lower-body exercise, European Journal of Applied Physiology, 111, 12, pp. 2977-2986, (2011); Rampinini E., Impellizzeri F.M., Castagna C., Azzalin A., Ferrari Bravo D., Wisloff U., Effect of match-related fatigue on short-passing ability in young soccer players, Medicine & Science in Sports and Exercise, 40, 5, pp. 934-942, (2008); Rossi M.M., Silvatti A.P., Dias F.A., Barros R.M., Improved accuracy in 3D analysis using DLT after lens distortion correction, Computer Methods in Biomechanics and Biomedical Engineering, 18, 9, pp. 993-1002, (2015); Russell M., Benton D., Kingsley M., The effects of fatigue on soccer skills performed during a soccer match simulation, International Journal of Sports Physiology & Performance, 6, 2, pp. 221-233, (2011); Sanchez-Sanchez J., Garcia-Unanue J., Jimenez-Reyes P., Gallardo A., Burillo P., Felipe J.L., Gallardo L., Lucia A., Influence of the mechanical properties of third-generation artificial turf systems on soccer players’ physiological and physical performance and their perceptions, PLoS One, 9, 10, (2014); Selmi M.A., Sassi R.H., Yahmed M.H., Giannini S., Perroni F., Elloumi M., Normative data and physical determinants of multiple sprint sets in young soccer players aged 11–18 years: effect of maturity status, The Journal of Strength & Conditioning Research, 34, 2, pp. 506-515, (2020); Thorsson O., Lilja B., Ahlgren L., Hemdal B., Westlin N., The effect of local cold application on intramuscular blood flow at rest and after running, Medicine & Science in Sports and Exercise, 17, 6, pp. 710-713, (1985); Timmins R.G., Opar D.A., Williams M.D., Schache A.G., Dear N.M., Shield A.J., Reduced biceps femoris myoelectrical activity influences eccentric knee flexor weakness after repeat sprint running, Scandinavian Journal of Medicine & Science in Sports, 24, 4, pp. e299-e305, (2014); Tyler C.J., Sunderland C., Cheung S.S., The effect of cooling prior to and during exercise on exercise performance and capacity in the heat: A meta-analysis, British Journal of Sports Medicine, 49, 1, pp. 7-13, (2015); Vieira L.H.P., Cunha S.A., Moraes R., Barbieri F.A., Aquino R., Oliveira L.D.P., Navarro M., Bedo B.L.S., Santiago P.R.P., Kicking performance in young U9 to U20 soccer players: assessment of velocity and accuracy simultaneously, Research Quarterly for Exercise & Sport, 89, 2, pp. 210-220, (2018); Wassinger C.A., Myers J.B., Gatti J.M., Conley K.M., Lephart S.M., Proprioception and throwing accuracy in the dominant shoulder after cryotherapy, Journal of Athletic Training, 42, 1, pp. 84-89, (2007); Wiewelhove T., Conradt F., Rawlins S., Deacon J., Meyer T., Kellmann M., Pfeiffer M., Ferrauti A., Effects of in-play cooling during simulated tennis match play in the heat on performance, physiological, and perceptual measures, The Journal of Sports Medicine and Physical Fitness, 61, 3, (2020); Zarrouk N., Chtourou H., Rebai H., Hammouda O., Souissi N., Dogui M., Hug F., Time of day effects on repeated sprint ability, International Journal of Sports Medicine, 33, 12, pp. 975-980, (2012); Zemke J.E., Andersen J.C., Guion W.K., McMillan J., Joyner A.B., Intramuscular temperature responses in the human leg to two forms of cryotherapy: Ice massage and ice bag, Journal of Orthopaedic & Sports Physical Therapy, 27, 4, pp. 301-307, (1998)","L.H. Palucci Vieira; Human Movement Research Laboratory (MOVI-LAB), Faculty of Sciences, Graduate Program in Movement Sciences, Physical Education Dept, São Paulo State University (Unesp), Bauru, Av. Eng. Luís Edmundo Carrijo Coube, 2085 - Nucleo Res. Pres. Geisel, SP, 17033-360, Brazil; email: luiz.palucci@unesp.br","","Routledge","02640414","","JSSCE","37279300","English","J. Sports Sci.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85161610340" "Fujii K.; Takeishi N.; Kawahara Y.; Takeda K.","Fujii, Keisuke (55628534697); Takeishi, Naoya (56119115100); Kawahara, Yoshinobu (9744960500); Takeda, Kazuya (7404334995)","55628534697; 56119115100; 9744960500; 7404334995","Decentralized policy learning with partial observation and mechanical constraints for multiperson modeling","2024","Neural Networks","171","","","40","52","12","0","10.1016/j.neunet.2023.11.068","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85179891815&doi=10.1016%2fj.neunet.2023.11.068&partnerID=40&md5=b1b9432bceeb5075f2022adc10cc5b39","Graduate School of Informatics, Nagoya University, Nagoya, Aichi, Japan; Center for Advanced Intelligence Project, RIKEN, Osaka, Japan; PRESTO, Japan Science and Technology Agency, Tokyo, Japan; Graduate School of Engineering, The University of Tokyo, Tokyo, Japan; Graduate School of Information Science and Technology, Osaka University, Osaka, Japan","Fujii K., Graduate School of Informatics, Nagoya University, Nagoya, Aichi, Japan, Center for Advanced Intelligence Project, RIKEN, Osaka, Japan, PRESTO, Japan Science and Technology Agency, Tokyo, Japan; Takeishi N., Center for Advanced Intelligence Project, RIKEN, Osaka, Japan, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan; Kawahara Y., Center for Advanced Intelligence Project, RIKEN, Osaka, Japan, Graduate School of Information Science and Technology, Osaka University, Osaka, Japan; Takeda K., Graduate School of Informatics, Nagoya University, Nagoya, Aichi, Japan","Extracting the rules of real-world multi-agent behaviors is a current challenge in various scientific and engineering fields. Biological agents independently have limited observation and mechanical constraints; however, most of the conventional data-driven models ignore such assumptions, resulting in lack of biological plausibility and model interpretability for behavioral analyses. Here we propose sequential generative models with partial observation and mechanical constraints in a decentralized manner, which can model agents’ cognition and body dynamics, and predict biologically plausible behaviors. We formulate this as a decentralized multi-agent imitation-learning problem, leveraging binary partial observation and decentralized policy models based on hierarchical variational recurrent neural networks with physical and biomechanical penalties. Using real-world basketball and soccer datasets, we show the effectiveness of our method in terms of the constraint violations, long-term trajectory prediction, and partial observation. Our approach can be used as a multi-agent simulator to generate realistic trajectories using real-world data. © 2023 Elsevier Ltd","Behavioral analysis; Multi-agent imitation learning; Neural networks; Sports","Cognition; Learning; Neural Networks, Computer; Behavioral research; Learning systems; Multi agent systems; Recurrent neural networks; Behavioral analysis; Decentralized policies; Imitation learning; Mechanical constraints; Multi agent; Multi-agent imitation learning; Neural-networks; Observation constraints; Partial observation; Real-world; Article; artificial neural network; basketball; biomechanics; cognition; decentralization; human; mathematical model; prediction; recurrent neural network; simulation; soccer; learning; Sports","Alahi A., Goel K., Ramanathan V., Robicquet A., Fei-Fei L., (2016); Amato C., Konidaris G., Kaelbling L.P., How J.P., Modeling and planning with macro-actions in decentralized POMDPs, Journal of Artificial Intelligence Research, 64, pp. 817-859, (2019); 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Fujii K., Takeishi N., Tsutsui K., Fujioka E., Nishiumi N., Tanaka R., Et al., Learning interaction rules from multi-animal trajectories via augmented behavioral models, Advances in Neural Information Processing Systems, 34, pp. 11108-11122, (2021); Fujii K., Takeuchi K., Kuribayashi A., Takeishi N., Kawahara Y., Takeda K., Estimating counterfactual treatment outcomes over time in complex multi-agent scenarios, (2022); Fujii K., Yokoyama K., Koyama T., Rikukawa A., Yamada H., Yamamoto Y., Resilient help to switch and overlap hierarchical subsystems in a small human group, Scientific Reports, 6, 1, pp. 1-10, (2016); Fujii K., Yoshioka S., Isaka T., Kouzaki M., The preparatory state of ground reaction forces in defending against a dribbler in a basketball 1-on-1 dribble subphase, Sports Biomechanics, 14, 1, pp. 28-44, (2015); Goyal A.G.A.P., Sordoni A., Cote M.-A., Ke N.R., Bengio Y., Z-forcing: Training stochastic recurrent networks, Advances in neural information processing systems 30, pp. 6713-6723, (2017); 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P., (2015); Kingma D. P., (2014); Kipf T., Fetaya E., Wang K.-C., Welling M., (2018); Le H. M., Yue Y., Carr P., 70, (2017); Leurent E., Mercat J., Social attention for autonomous decision-making in dense traffic, (2019); Liu A. T., Hsu P., (2019); Liu Y., Wang W., Hu Y., Hao J., Chen X., 34, (2020); Lowe S., Madras D., Zemel R., Welling M., Amortized causal discovery: Learning to infer causal graphs from time-series data, (2020); Maddison C. J., Mnih A., Teh Y., (2017); Mao H., Zhang Z., Xiao Z., (2019); Papadimitriou C.H., Steiglitz K., Combinatorial optimization, vol. 24, (1982); Pham Q.-C., Hicheur H., Arechavaleta G., Laumond J.-P., Berthoz A., The formation of trajectories during goal-oriented locomotion in humans. II. A maximum smoothness model, European Journal of Neuroscience, 26, 8, pp. 2391-2403, (2007); Rainforth T., Kosiorek A., Le T. A., Maddison C., Igl M., Wood F., Et al., 80, pp. 4277-4285, (2018); Rhinehart N., McAllister R., Kitani K., (2019); Ross S., Gordon G., (2011); Rupprecht C., Laina I., DiPietro R., Baust M., Tombari F., Navab N., Et al., (2017); Schaal S., Learning from demonstration, Advances in Neural Information Processing Systems, 9, pp. 1040-1046, (1996); Sun C., Karlsson P., Wu J., Tenenbaum J. B., (2019); Tang C., Salakhutdinov R.R., Multiple futures prediction, Advances in neural information processing systems 32, pp. 15398-15408, (2019); Tank A., Covert I., Foti N., Shojaie A., Fox E., Neural granger causality for nonlinear time series, (2018); Teranishi M., Fujii K., Takeda K., Trajectory prediction with imitation learning reflecting defensive evaluation in team sports, 2020 IEEE 9th global conference on consumer electronics, pp. 124-125, (2020); Teranishi M., Tsutsui K., Takeda K., Fujii K., Evaluation of creating scoring opportunities for teammates in soccer via trajectory prediction, (2022); Tsutsui K., Fujii K., Kudo K., Takeda K., Flexible prediction of opponent motion with internal representation in interception behavior, Biological Cybernetics, 115, 5, pp. 473-485, (2021); Uno Y., Kawato M., Suzuki R., Formation and control of optimal trajectory in human multijoint arm movement, Biological Cybernetics, 61, 2, pp. 89-101, (1989); Wang X., Girshick R., Gupta A., (2018); Williams R.J., Zipser D., A learning algorithm for continually running fully recurrent neural networks, Neural Computation, 1, 2, pp. 270-280, (1989); Yeh R. A., Schwing A. G., Huang J., (2019); Yoshihara Y., Morales Y., Akai N., Takeuchi E., Ninomiya Y., Autonomous predictive driving for blind intersections, 2017 IEEE/RSJ international conference on intelligent robots and systems, pp. 3452-3459, (2017); Zhan E., Zheng S., Yue Y., Sha L., (2019); Zheng S., Yue Y., Hobbs J., Generating long-term trajectories using deep hierarchical networks, Advances in neural information processing systems 29, pp. 1543-1551, (2016)","K. Fujii; Graduate School of Informatics, Nagoya University, Nagoya, Aichi, Japan; email: fujii@i.nagoya-u.ac.jp","","Elsevier Ltd","08936080","","NNETE","38091763","English","Neural Netw.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85179891815" "Dowell L.J.; Krebs G.","Dowell, Linus J. (6603757104); Krebs, Gary (7005687804)","6603757104; 7005687804","A formula for comparison of selected sport ball compressibility","1991","British Journal of Sports Medicine","25","1","","34","37","3","1","10.1136/bjsm.25.1.34","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0025783199&doi=10.1136%2fbjsm.25.1.34&partnerID=40&md5=281c949234328904b3d6314c9f142ac2","Department of Health and Physical Education, Texas A and M University, TX, United States","Dowell L.J., Department of Health and Physical Education, Texas A and M University, TX, United States; Krebs G., Department of Health and Physical Education, Texas A and M University, TX, United States","The purpose of this study was to develop a formula to determine and compare the compressibility of selected sport balls. Six balls (basketball, Volleyball, soccer ball, baseball, handball, golf ball) were dropped ten times from each of four different heights onto a smooth solid surface overlaid with a white sheet of typing paper, overlaid with a sheet of carbon paper. The diameter of the area of contact of each ball imprinted onto the typing paper was measured in millimetres with calipers. From the data, the distance (d) that each ball compressed for each velocity (v) was calculated. It was found that a linear relationship existed between velocity at impact and the distance for each ball studied. The compressibility coefficient (c) for each ball was calculated and a formula was developed to determine the distance each ball would compress at a given velocity. When velocity is measured in metres per second and the distance a ball compresses is measured in millimetres, the formula to determine d for selected balls, in order of compressibility is: basketball d = 3.07v, volleyball d = 2.90v, soccer ball d = 2.80v, baseball d = 0.77v, handball d = 0.53v, and golf ball d = 0.17v. © 1991.","balls; Biomechanics; compressibility; formula; velocity","article; biomechanics; sport","Luttgens K., Wells K., Kinesiology: Scientific Basis of Human Motion, (1982); Piscopo J., Kinesiology Baley J.A., The Science of Movement, (1981); Northrip J.W., Logan G.A., McKinney W.C., Analysis of Sport Motion, (1983); Bunn J.W., Scientific Principles of Coaching, (1972); Broer M.R., Efficiency of Human Movement, (1967); Jensen C.R., Schultz G.W., Applied Kinesiology, (1970); Scott G.M., Analysis of Human Motion, (1963); Hay J.G., Reid J.C., The Anatomical and Mechanical Bases of Human Motion, (1982); Schneider K., The risk of brain-injuries in soccer-header, Unfallheikunde, 87, (1984); Smodlaka V.N., Medical aspects of heading the ball in soccer, Physic Sportsmed, 12, (1984); Tysvaer A, Association football injuries to the brain: a preliminary report, Br J Sports Med, 15, (1981); Verdaguer J., Juvenile retinal detachment, Am J Ophthalmol, 93, (1982); Sandyk R., Footballer's migraine: a report of two cases, S Afr Med J, 63, (1983); Kross R., Ohler K., Barolin G.S., Cerebral trauma due to heading: computerized EEG-analysis of football players, EEG EMG, 14, (1983); Tysvaer A., Case report: cervical disc herniation in a football player, Br J Sports Med, 19, (1985); Levendusky T.A., Armstrong C.W., Eck J.S., Jezioroski J., Kugler L., Impact characteristics of two types of soccer balls, (1988); Townend M.S., Is heading the ball a dangerous activity?, (1988); Bishop P.J., Briard B.D., Impact performance of bicyde helmets, Can J Appl Sport Sci, 9, (1984); Bishop P.J., Norman R.W., Kozey J.W., Evaluation of football helmets under impact conditions, Am J Sports Med, 12, (1984); Smith P.K., Hamill J., Karate and boxing glove impact characteristics as functions of velocity and repeated impact; Hodgson V.R., Thomas L.M., Boxing gloves compared using dummy head acceleration response. Report to the New York State Athletic Commissioner, (1981)","","","","03063674","","BJSMD","1913029","English","Br. J. Sports Med.","Article","Final","All Open Access; Bronze Open Access; Green Open Access","Scopus","2-s2.0-0025783199" "Vianna M.; Metsavaht L.; Guadagnin E.; Franciozi C.E.; Luzo M.; Tannure M.; Leporace G.","Vianna, Matheus (58868818800); Metsavaht, Leonardo (6507801398); Guadagnin, Eliane (55806980800); Franciozi, Carlos Eduardo (25922123000); Luzo, Marcus (6508336881); Tannure, Marcio (57202919252); Leporace, Gustavo (36185833500)","58868818800; 6507801398; 55806980800; 25922123000; 6508336881; 57202919252; 36185833500","Variables Associated With Knee Valgus in Male Professional Soccer Players During a Single-Leg Vertical Landing Task","2024","Journal of Applied Biomechanics","40","1","","9","13","4","0","10.1123/jab.2023-0067","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85184345259&doi=10.1123%2fjab.2023-0067&partnerID=40&md5=3ac437dcd98a1f05b8e62f62b6ca4cc1","Departamento de Diagnóstico por Imagem, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil; Instituto Brasil de Tecnologias da Saúde (IBTS), Rio de Janeiro, Brazil; Clube de Regatas do Flamengo, Rio de Janeiro, Brazil","Vianna M., Departamento de Diagnóstico por Imagem, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil; Metsavaht L., Departamento de Diagnóstico por Imagem, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil, Instituto Brasil de Tecnologias da Saúde (IBTS), Rio de Janeiro, Brazil; Guadagnin E., Instituto Brasil de Tecnologias da Saúde (IBTS), Rio de Janeiro, Brazil; Franciozi C.E., Departamento de Diagnóstico por Imagem, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil; Luzo M., Departamento de Diagnóstico por Imagem, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil; Tannure M., Clube de Regatas do Flamengo, Rio de Janeiro, Brazil; Leporace G., Departamento de Diagnóstico por Imagem, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil, Instituto Brasil de Tecnologias da Saúde (IBTS), Rio de Janeiro, Brazil","Prior studies have explored the relationship between knee valgus and musculoskeletal variables to formulate injury prevention programs, primarily for females. Nonetheless, there is insufficient evidence pertaining to professional male soccer players. Here, the aim was to test the correlation of lateral trunk inclination, hip adduction, hip internal rotation, ankle dorsiflexion range of motion, and hip isometric strength with knee valgus during the single-leg vertical jump test. Twenty-four professional male soccer players performed a single-leg vertical hop test, hip strength assessments, and an ankle dorsiflexion range of motion test. A motion analysis system was employed for kinematic analysis. Maximal isometric hip strength and ankle dorsiflexion range of motion were tested using a handheld dynamometer and a digital inclinometer, respectively. The correlation of peak knee valgus with peak lateral trunk inclination was .43 during the landing phase (P = .04) and with peak hip internal rotation was -.68 (P < .001). For knee valgus angular displacement, only peak lateral trunk inclination presented a moderate positive correlation (r = .40, P = .05). This study showed that trunk and hip kinematics are associated with knee valgus, which could consequently lead to increased knee overload in male professional soccer players following a unilateral vertical landing test. © 2024 Human Kinetics, Inc.","anterior cruciate ligament; knee injury; unilateral landing","Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Female; Humans; Knee; Knee Joint; Leg; Male; Soccer; Landing; Physiological models; Professional aspects; Sports; Anterior cruciate ligament; Dorsiflexions; Internal rotations; Knee injury; Knee valgus; Range-of-motion; Soccer player; Trunk inclination; Unilateral landing; Vertical landing; adduction; adult; ankle; ankle dorsiflexion angle; anterior cruciate ligament; Article; cohort analysis; correlation analysis; hip; human; human experiment; isometric hip strength; joint mobility; jumping; kinematics; knee injury; male; range of motion; single leg vertical landing; soccer player; task performance; trunk; trunk inclination angle; valgus knee; young adult; anterior cruciate ligament injury; biomechanics; female; knee; leg; soccer; Kinematics","Brophy RH, Stepan JG, Silvers HJ, Mandelbaum BR., Defending puts the anterior cruciate ligament at risk during soccer: a gender-based analysis, Sports Health, 7, 3, pp. 244-249, (2015); von Porat A, Roos EM, Roos H., High prevalence of osteoarthritis 14 years after an anterior cruciate ligament tear in male soccer players: a study of radiographic and patient relevant outcomes, Ann Rheum Dis, 63, 3, pp. 269-273, (2004); Walden M, Hagglund M, Magnusson H, Ekstrand J., ACL injuries in men's professional football: a 15-year prospective study on time trends and return-to-play rates reveals only 65% of players still play at the top level 3 years after ACL rupture, Br J Sports Med, 50, 12, pp. 744-750, (2016); Hewett TE, Myer GD, Ford KR, Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study, Am J Sports Med, 33, 4, pp. 492-501, (2005); Della Villa F, Buckthorpe M, Grassi A, Et al., Systematic video analysis of ACL injuries in professional male football (soccer): injury mechanisms, situational patterns and biomechanics study on 134 consecutive cases, Br J Sports Med, 54, 23, pp. 1423-1432, (2020); Walden M, Krosshaug T, Bjorneboe J, Andersen TE, Faul O, Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: a systematic video analysis of 39 cases, Br J Sports Med, 49, 22, pp. 1452-1460, (2015); Koga H, Nakamae A, Shima Y, Et al., Mechanisms for noncontact anterior cruciate ligament injuries: knee joint kinematics in 10 injury situations from female team handball and basketball, Am J Sports Med, 38, 11, pp. 2218-2225, (2010); Fong CM, Blackburn JT, Norcross MF, McGrath M, Padua DA., Ankle-dorsiflexion range of motion and landing biomechanics, J Athl Train, 46, 1, pp. 5-10, (2011); Zazulak BT, Hewett TE, Reeves NP, Goldberg B, Cholewicki J., Deficits in neuromuscular control of the trunk predict knee injury risk: a prospective biomechanical-epidemiologic study, Am J Sports Med, 35, 7, pp. 1123-1130, (2007); Myer GD, Chu DA, Brent JL, Hewett TE., Trunk and hip control neuromuscular training for the prevention of knee joint injury, Clin Sports Med, 27, 3, pp. 425-448, (2008); Alentorn-Geli E, Myer GD, Silvers HJ, Et al., Prevention of noncontact anterior cruciate ligament injuries in soccer players. Part 2: a review of prevention programs aimed to modify risk factors and to reduce injury rates, Knee Surg Sports Traumatol Arthrosc, 17, 8, pp. 859-879, (2009); Bisciotti GN, Chamari K, Cena E, Bisciotti A, Corsini A, Volpi P., Anterior cruciate ligament injury risk factors in football, J Sports Med Phys Fitness, 59, 10, pp. 1724-1738, (2019); Dix J, Marsh S, Dingenen B, Malliaras P., The relationship between hip muscle strength and dynamic knee valgus in asymptomatic females: a systematic review, Phys Ther Sport, 37, pp. 197-209, (2019); Lima YL, Ferreira VMLM, de Paula Lima PO, Bezerra MA, de Oliveira RR, Almeida GPL., The association of ankle dorsiflexion and dynamic knee valgus: a systematic review and meta-analysis, Phys Ther Sport, 29, pp. 61-69, (2018); Leporace G, Praxedes J, Pereira GR, Et al., Influence of a preventive training program on lower limb kinematics and vertical jump height of male volleyball athletes, Phys Ther Sport, 14, 1, pp. 35-43, (2013); Leporace G, Tannure M, Zeitoune G, Metsavaht L, Marocolo M, Souto Maior A., Association between knee-to-hip flexion ratio during single-leg vertical landings, and strength and range of motion in professional soccer players, Sports Biomech, 19, 3, pp. 411-420, (2020); Olivares-Jabalera J, Filter-Ruger A, Dos'Santos T, Et al., Is there association between cutting and jump-landing movement quality in semi-professional football players?. Implications for ACL injury risk screening, Phys Ther Sport, 56, pp. 15-23, (2022); Dischiavi SL, Wright AA, Heller RA, Et al., Do ACL injury risk reduction exercises reflect common injury mechanisms?. A scoping review of injury prevention programs, Sports Health, 14, 4, pp. 592-600, (2022); Malloy PJ, Morgan AM, Meinerz CM, Geiser CF, Kipp K., Hip external rotator strength is associated with better dynamic control of the lower extremity during landing tasks, J Strength Cond Res, 30, 1, pp. 282-291, (2016); Hickey KC, Quatman CE, Myer GD, Ford KR, Brosky JA, Hewett TE., Methodological report: dynamic field tests used in an NFL combine setting to identify lower-extremity functional asymmetries, J Strength Cond Res, 23, 9, pp. 2500-2506, (2009); Sugimoto D, Myer GD, Foss KD, Hewett TE., Specific exercise effects of preventive neuromuscular training intervention on anterior cruciate ligament injury risk reduction in young females: metaanalysis and subgroup analysis, Br J Sports Med, 49, 5, pp. 282-289, (2015); Kainz H, Modenese L, Lloyd DG, Maine S, Walsh HPJ, Carty CP., Joint kinematic calculation based on clinical direct kinematic versus inverse kinematic gait models, J Biomech, 49, 9, pp. 1658-1669, (2016); Kadaba MP, Ramakrishnan HK, Wootten ME., Measurement of lower extremity kinematics during level walking, J Orthop Res, 8, 3, pp. 383-392, (1990); Grood ES, Suntay WJ., A joint coordinate system for the clinical description of three-dimensional motions: application to the knee, J Biomech Eng, 105, 2, pp. 136-144, (1983); Stratford PW, Balsor BE., A comparison of make and break tests using a hand-held dynamometer and the Kin-Com, J Orthop Sports Phys Ther, 19, 1, pp. 28-32, (1994); Ieiri A, Tushima E, Ishida K, Inoue M, Kanno T, Masuda T., Reliability of measurements of hip abduction strength obtained with a hand-held dynamometer, Physiother Theory Pract, 31, 2, pp. 146-152, (2015); Kim SG, Lee YS., The intra- and inter-rater reliabilities of lower extremity muscle strength assessment of healthy adults using a hand held dynamometer, J Phys Ther Sci, 27, 6, pp. 1799-1801, (2015); Thorborg K, Bandholm T, Holmich P., Hip- and knee-strength assessments using a hand-held dynamometer with external beltfixation are inter-tester reliable, Knee Surg Sports Traumatol Arthrosc, 21, 3, pp. 550-555, (2013); Schober P, Boer C, Schwarte LA., Correlation coefficients: appropriate use and interpretation, Anesth Analg, 126, 5, pp. 1763-1768, (2018); Song Y, Li L, Hughes G, Dai B., Trunk motion and anterior cruciate ligament injuries: a narrative review of injury videos and controlled jump-landing and cutting tasks, Sports Biomech, 22, 1, pp. 46-64, (2023); Saito A, Okada K, Sasaki M, Wakasa M., Influence of the trunk position on knee kinematics during the single-leg landing: implications for injury prevention, Sports Biomech, 21, 7, pp. 810-823, (2022); Claiborne TL, Armstrong CW, Gandhi V, Pincivero DM., Relationship between hip and knee strength and knee valgus during a single leg squat, J Appl Biomech, 22, 1, pp. 41-50, (2006); Pletcher ER, Dekker TJ, Lephart SM, Sell TC., Sex and age comparisons in neuromuscular and biomechanical characteristics of the knee in young athletes, Int J Sports Phys Ther, 16, 2, pp. 438-449, (2021); Bedi A, Warren RF, Wojtys EM, Et al., Restriction in hip internal rotation is associated with an increased risk of ACL injury, Knee Surg Sports Traumatol Arthrosc, 24, 6, pp. 2024-2031, (2016); Beaulieu ML, Wojtys EM, Ashton-Miller JA., Risk of anterior cruciate ligament fatigue failure is increased by limited internal femoral rotation during in vitro repeated pivot landings, Am J Sports Med, 43, 9, pp. 2233-2241, (2015); Ishida T, Koshino Y, Yamanaka M, Et al., Larger hip external rotation motion is associated with larger knee abduction and internal rotation motions during a drop vertical jump, Sports Biomech, (2021)","G. Leporace; Departamento de Diagnóstico por Imagem, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil; email: gustavo@biocinetica.com.br","","Human Kinetics Publishers Inc.","10658483","","JABOE","37775099","English","J. Appl. Biomech.","Article","Final","","Scopus","2-s2.0-85184345259" "Bramah C.; Tawiah-Dodoo J.; Rhodes S.; Elliott J.D.; Dos’Santos T.","Bramah, Christopher (56578535100); Tawiah-Dodoo, Jonas (57475989900); Rhodes, Samantha (58962123600); Elliott, Joshua D. (58961829600); Dos’Santos, Thomas (57966084800)","56578535100; 57475989900; 58962123600; 58961829600; 57966084800","The Sprint Mechanics Assessment Score: A Qualitative Screening Tool for the In-field Assessment of Sprint Running Mechanics","2024","American Journal of Sports Medicine","52","6","","1608","1616","8","1","10.1177/03635465241235525","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85189026375&doi=10.1177%2f03635465241235525&partnerID=40&md5=5ddf260e773c41a47d295f1ee2a0cc11","School of Health & Society, University of Salford, Salford, Manchester, United Kingdom; Manchester Institute of Health & Performance, Manchester, United Kingdom; Speedworks Training, Stamford, United Kingdom; Nuffield Health, Manchester Institute of Health & Performance, United Kingdom; Research Institute for Sport and Exercise, University of Canberra, Canberra, Australia; Department of Sport & Exercise Sciences, Manchester Metropolitan University, Manchester, United Kingdom; Manchester Institute of Sport, Metropolitan University, Manchester, United Kingdom","Bramah C., School of Health & Society, University of Salford, Salford, Manchester, United Kingdom, Manchester Institute of Health & Performance, Manchester, United Kingdom; Tawiah-Dodoo J., Speedworks Training, Stamford, United Kingdom; Rhodes S., School of Health & Society, University of Salford, Salford, Manchester, United Kingdom, Manchester Institute of Health & Performance, Manchester, United Kingdom, Nuffield Health, Manchester Institute of Health & Performance, United Kingdom; Elliott J.D., Manchester Institute of Health & Performance, Manchester, United Kingdom, Nuffield Health, Manchester Institute of Health & Performance, United Kingdom, Research Institute for Sport and Exercise, University of Canberra, Canberra, Australia; Dos’Santos T., Department of Sport & Exercise Sciences, Manchester Metropolitan University, Manchester, United Kingdom, Manchester Institute of Sport, Metropolitan University, Manchester, United Kingdom","Background: Qualitative movement screening tools provide a practical method of assessing mechanical patterns associated with potential injury development. Biomechanics play a role in hamstring strain injury and are recommended as a consideration within injury screening and rehabilitation programs. However, no methods are available for the in-field assessment of sprint running mechanics associated with hamstring strain injuries. Purpose: To investigate the intra- and interrater reliability of a novel screening tool assessing in-field sprint running mechanics titled the Sprint Mechanics Assessment Score (S-MAS) and present normative S-MAS data to facilitate the interpretation of performance standards for future assessment uses. Study Design: Cohort study (diagnosis); Level of evidence, 3. Methods: Maximal sprint running trials (35 m) were recorded from 136 elite soccer players using a slow-motion camera. All videos were scored using the S-MAS by a single assessor. Videos from 36 players (18 men and 18 women) were rated by 2 independent assessors blinded to each other's results to establish interrater reliability. One assessor scored all videos in a randomized order 1 week later to establish intrarater reliability. Intraclass correlation coefficients (ICCs) based on single measures using a 2-way mixed-effects model, with absolute agreement with 95% CI and kappa coefficients with percentage agreements, were used to assess the reliability of the overall score and individual score items, respectively. T-scores were calculated from the means and standard deviations of the male and female groups to present normative data values. The Mann-Whitney U test and the Wilcoxon signed-rank test were used to assess between-sex differences and between-limb differences, respectively. Results: The S-MAS showed good intrarater (ICC, 0.828 [95% CI, 0.688-0.908]) and interrater (ICC, 0.799 [95% CI, 0.642-0.892]) reliability, with a standard error of measurement of 1 point. Kappa coefficients for individual score items demonstrated moderate to substantial intra- and interrater agreement for most parameters, with percentage agreements ranging from 75% to 88.8% for intrarater and 66.6% to 88.8% for interrater reliability. No significant sex differences were observed for overall scores, with mean values of 4.2 and 3.8 for men and women, respectively (P =.27). Conclusion: The S-MAS is a new tool developed for assessing sprint running mechanics associated with lower limb injuries in male and female soccer players. The reliable and easy-to-use nature of the S-MAS means that this method can be integrated into practice, potentially aiding future injury screening and research looking to identify athletes who may demonstrate mechanical patterns potentially associated with hamstring strain injuries. © 2024 The Author(s).","biomechanics; hamstring; movement quality; qualitative screening; rehabilitation; screening; soccer","Adolescent; Adult; Athletic Injuries; Biomechanical Phenomena; Cohort Studies; Female; Hamstring Muscles; Humans; Male; Observer Variation; Reproducibility of Results; Running; Soccer; Sprains and Strains; Video Recording; Young Adult; adolescent; adult; biomechanics; cohort analysis; female; hamstring muscle; human; injury; male; observer variation; pathophysiology; physiology; reproducibility; running; soccer; sport injury; videorecording; young adult","Bonett D.G., Sample size requirements for estimating intraclass correlations with desired precision, Stat Med, 21, 9, pp. 1331-1335, (2002); 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Daly C., Persson U.M., Twycross-Lewis R., Woledge R.C., Morrissey D., The biomechanics of running in athletes with previous hamstring injury: a case-control study, Scand J Med Sci Sports, 26, 4, pp. 413-420, (2016); Dos'Santos T., McBurnie A., Comfort P., Jones P.A., The effects of six-weeks change of direction speed and technique modification training on cutting performance and movement quality in male youth soccer players, Sports (Basel), 7, 9, (2019); Dos'Santos T., McBurnie A., Donelon T., Thomas C., Comfort P., Jones P.A., A qualitative screening tool to identify athletes with “high-risk” movement mechanics during cutting: the cutting movement assessment score (CMAS), Phys Ther Sport, 38, pp. 152-161, (2019); Edouard P., Mendiguchia J., Guex K., Et al., Sprinting: a key piece of the hamstring injury risk management puzzle, Br J Sports Med, 57, 1, pp. 4-6, (2023); Ekstrand J., Bengtsson H., Walden M., Davison M., Khan K.M., Hagglund M., Hamstring injury rates have increased during recent seasons and now constitute 24% of all injuries in men’s professional football: the UEFA Elite Club Injury Study from 2001/02 to 2021/22, Br J Sports Med, 57, 5, pp. 292-298, (2022); 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Implications for performance and hamstring injury management, Int J Sports Physiol Perform, 17, 3, pp. 374-383, (2022); Mendiguchia J., Gonzalez De la Flor A., Mendez-Villanueva A., Morin J.B., Edouard P., Garrues M.A., Training-induced changes in anterior pelvic tilt: potential implications for hamstring strain injuries management, J Sports Sci, 39, 7, pp. 760-767, (2021); Nagahara R., Matsubayashi T., Matsuo A., Zushi K., Kinematics of transition during human accelerated sprinting, Biol Open, 3, 8, pp. 689-699, (2014); Onate J., Cortes N., Welch C., Van Lunen B.L., Expert versus novice interrater reliability and criterion validity of the Landing Error Scoring System, J Sport Rehabil, 19, 1, pp. 41-56, (2010); Padua D.A., DiStefano L.J., Beutler A.I., de la Motte S.J., DiStefano M.J., Marshall S.W., The Landing Error Scoring System as a screening tool for an anterior cruciate ligament injury-prevention program in elite-youth soccer athletes, J Athl Train, 50, 6, pp. 589-595, (2015); Padua D.A., Marshall S.W., Boling M.C., Thigpen C.A., Garrett W.E., Beutler A.I., The Landing Error Scoring System (LESS) is a valid and reliable clinical assessment tool of jump-landing biomechanics: the JUMP-ACL study, Am J Sports Med, 37, 10, pp. 1996-2002, (2009); Piovesana A., Senior G., How small is big: sample size and skewness, Assessment, 25, 6, pp. 793-800, (2018); Pipkin A., Kotecki K., Hetzel S., Heiderscheit B., Reliability of a qualitative video analysis for running, J Orthop Sports Phys Ther, 46, 7, pp. 556-561, (2016); Schache A.G., Wrigley T.V., Baker R., Pandy M.G., Biomechanical response to hamstring muscle strain injury, Gait Posture, 29, 2, pp. 332-338, (2009); Schuermans J., Danneels L., Van Tiggelen D., Palmans T., Witvrouw E., Proximal neuromuscular control protects against hamstring injuries in male soccer players: a prospective study with electromyography time-series analysis during maximal sprinting, Am J Sports Med, 45, 6, (2017); Schuermans J., Van Tiggelen D., Palmans T., Danneels L., Witvrouw E., Deviating running kinematics and hamstring injury susceptibility in male soccer players: cause or consequence?, Gait Posture, 57, pp. 270-277, (2017); Sides D.L., Kinematics and Kinetics of Maximal Velocity Sprinting and Specificity of Training in Elite Athletes, (2015); Turner A.N., Jones B., Stewart P., Et al., Total score of athleticism: holistic athlete profiling to enhance decision-making, Strength Conditioning J, 41, 6, pp. 91-101, (2019); Weeks B.K., Carty C.P., Horan S.A., Kinematic predictors of single-leg squat performance: a comparison of experienced physiotherapists and student physiotherapists, BMC Musculoskelet Disord, 13, (2012); Whatman C., Hing W., Hume P., Physiotherapist agreement when visually rating movement quality during lower extremity functional screening tests, Phys Ther Sport, 13, 2, pp. 87-96, (2012); Whatman C., Hume P., Hing W., The reliability and validity of physiotherapist visual rating of dynamic pelvis and knee alignment in young athletes, Phys Ther Sport, 14, 3, pp. 168-174, (2013)","C. Bramah; School of Health & Society, University of Salford, Salford, Manchester, United Kingdom; email: c.a.bramah@salford.ac.uk","","SAGE Publications Inc.","03635465","","AJSMD","38544464","English","Am. J. Sports Med.","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85189026375" "Ioannou G.; Kanioris E.; Nikolaidou M.-E.","Ioannou, George (59143584400); Kanioris, Evangelos (59143426900); Nikolaidou, Maria-Elissavet (57194042339)","59143584400; 59143426900; 57194042339","Effect of a Short-Term Combined Balance and Multidirectional Plyometric Training on Postural Balance and Explosive Performance in U-13 Male and Female Soccer Athletes","2024","Applied Sciences (Switzerland)","14","10","4141","","","","0","10.3390/app14104141","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85194136785&doi=10.3390%2fapp14104141&partnerID=40&md5=d43c6bb22440710fee591b089abb32a7","School of Physical Education and Sports Science, National and Kapodistrian University of Athens, Athens, 17237, Greece; Division of Sport Medicine and Biology of Exercise, School of Physical Education and Sports Science, National and Kapodistrian University of Athens, Athens, 17237, Greece","Ioannou G., School of Physical Education and Sports Science, National and Kapodistrian University of Athens, Athens, 17237, Greece; Kanioris E., School of Physical Education and Sports Science, National and Kapodistrian University of Athens, Athens, 17237, Greece; Nikolaidou M.-E., Division of Sport Medicine and Biology of Exercise, School of Physical Education and Sports Science, National and Kapodistrian University of Athens, Athens, 17237, Greece","This study’s aim is to examine the effect of a combined balance and multidirectional plyometric training intervention on postural balance ability and lower limb explosive performance in U-13 male and female soccer athletes. Twenty pre-adolescent (age: 12.6 ± 1.6 years) soccer athletes followed a 6-week training intervention combining balance exercises, dynamic stabilization tasks and multidirectional plyometric exercises at a frequency of twice/week for 20–25 min, based on a progressive increase in exercise difficulty from phase A (week 1–3) to phase B (week 4–6). Pre- and post-training measurements were carried out to assess the following: (a) static balance performance in single (left, right)-legged and two-legged quiet stance trials with eyes open and eyes closed (two trials per stance and vision condition of 30 s duration) and (b) lower limb explosive performance in countermovement and squat jumps without arm swing (three trials/jump). The vertical GRF was recorded by a customized force plate (Wii, 1.000 Hz, Biovision) and offline, CoP and explosive performance parameters were calculated. The overall results showed that the static balance ability of athletes remained unaffected, while restricting their vision deteriorated their postural control. The lower limb explosive performance showed a trend for improvement; however, inter-individual variations in athletes’ responses might have obscured any effect. © 2024 by the authors.","biomechanical analysis; jumping performance; plyometrics; preadolescence; soccer; static balance","","Hulteen R.M., Smith J.J., Morgan P.J., Barnett L.M., Hallal P.C., Colyvas K., Lubans D.R., Global Participation in Sport and Leisure-Time Physical Activities: A Systematic Review and Meta-Analysis, Prev. Med, 95, pp. 14-25, (2017); Altmann S., Kuberczyk M., Ringhof S., Neumann R., Woll A., Relationships between Performance Test and Match-Related Physical Performance Parameters, Ger. J. Exerc. 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Res, 32, pp. 100-106, (2010); Moran J., Ramirez-Campillo R., Liew B., Chaabene H., Behm D.G., Garcia-Hermoso A., Izquierdo M., Granacher U., Effects of Vertically and Horizontally Orientated Plyometric Training on Physical Performance: A Meta-Analytical Comparison, Sports Med, 51, pp. 65-79, (2020); Jlid M.C., Racil G., Coquart J., Paillard T., Bisciotti G.N., Chamari K., Multidirectional Plyometric Training: Very Efficient Way to Improve Vertical Jump Performance, Change of Direction Performance and Dynamic Postural Control in Young Soccer Players, Front. Physiol, 10, (2019); Jlid M.C., Coquart J., Maffulli N., Paillard T., Bisciotti G.N., Chamari K., Effects of in Season Multi-Directional Plyometric Training on Vertical Jump Performance, Change of Direction Speed and Dynamic Postural Control in U-21 Soccer Players, Front. 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Sports, 27, pp. 54-56, (2012); Taube W., Gruber M., Gollhofer A., Spinal and Supraspinal Adaptations Associated with Balance Training and Their Functional Relevance, Acta Physiol, 193, pp. 101-116, (2008); Maffiuletti N.A., Dugnani S., Folz M., Di Pierno E., Mauro F., Effect of Combined Electrostimulation and Plyometric Training on Vertical Jump Height, Med. Sci. Sports Exerc, 34, pp. 1638-1644, (2002); Ramachandran A.K., Singh U., Ramirez-Campillo R., Clemente F.M., Afonso J., Granacher U., Effects of Plyometric Jump Training on Balance Performance in Healthy Participants: A Systematic Review with Meta-Analysis, Front. Physiol, 12, (2021); Moran J., Clark C.C.T., Ramirez-Campillo R., Davies M.J., Drury B., A Meta-Analysis of Plyometric Training in Female Youth, J. Strength Cond. Res, 33, pp. 1996-2008, (2019); Jadczak L., Grygorowicz M., Wieczorek A., Sliwowski R., Analysis of Static Balance Performance and Dynamic Postural Priority according to Playing Position in Elite Soccer Players, Gait Posture, 74, pp. 148-153, (2019); Pau M., Ibba G., Leban B., Scorcu M., Characterization of Static Balance Abilities in Elite Soccer Players by Playing Position and Age, Res. Sports Med, 22, pp. 355-367, (2014)","M.-E. Nikolaidou; Division of Sport Medicine and Biology of Exercise, School of Physical Education and Sports Science, National and Kapodistrian University of Athens, Athens, 17237, Greece; email: mnikola@phed.uoa.gr","","Multidisciplinary Digital Publishing Institute (MDPI)","20763417","","","","English","Appl. Sci.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85194136785" "Hasan U.; Clemente F.M.","Hasan, Uday (57213354123); Clemente, Filipe Manuel (57209913336)","57213354123; 57209913336","Relationship between passing and ball control in soccer: Analysis of variations of kinematic measures","2021","Polish Journal of Sport and Tourism","28","1","","3","7","4","0","10.2478/pjst-2021-0001","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107841432&doi=10.2478%2fpjst-2021-0001&partnerID=40&md5=0838e16b550958465a82c0aa8cc07eff","Al-Kitab University, Department of Physical Education and Sports Sciences, Kirkuk, Iraq; Instituto Politécnico de Viana do Castelo, Escola Superior Desporto e Lazer, Rua Escola Industrial e Comercial de Nun'Álvares, Viana do Castelo, Portugal","Hasan U., Al-Kitab University, Department of Physical Education and Sports Sciences, Kirkuk, Iraq; Clemente F.M., Instituto Politécnico de Viana do Castelo, Escola Superior Desporto e Lazer, Rua Escola Industrial e Comercial de Nun'Álvares, Viana do Castelo, Portugal","Introduction. a soccer player with good ball control is the one who is able to perform complex coordinated situational motor actions in a certain space and in as short time period as possible. The analysis included variations in the angle of the knee joint of the leg receiving a ball (AKLR), angle of the knee joint of the supporting leg (AKLS), angle between thighs (ABT), trunk bending angle (TBA), hip joint point height (HPH), and ball distance after controlling the ball (BDAC) between effective and ineffective passing in soccer. Material and Methods. a total of 12 university soccer players (age: 20.8 ±.83 years old, experience: 4.7 ±.78 years) voluntarily participated in the study. The players made five attempts to control the ball with the inside foot. The best attempt was analysed for each case (effective and ineffective). Results. The degrees of AKLR, AKLS, ABT, TBA and HPH were significantly greater in effective passing than those in ineffective passing; the observed effect sizes were 4.87, 2.53, 1.77, 3.98, and 3.40, respectively. BDAC was meaningfully greater at ineffective passing (effect size: 2.03). Conclusions. There were significant differences in the values of kinematic variables used to test ball control by effective and ineffective passes (p < 0.05). The research sample, in terms of the values of kinematic variables, achieved noticeable progress during the performance of ball control for effective passing, which showed its effectiveness in reducing the distance after controlling the ball. Copyright © 2021 by the Józef Piłsudski University of Physical Education in Warsaw, Faculty of Physical Education and Health in Biała Podlaska","Ball control; Biomechanics; Football; Motion analysis; Performance","","Ali A., Measuring soccer skill performance: A review, Scandinavian Journal of Medicine & Science in Sports, 21, 2, pp. 170-183, (2011); Corluka M., Bjelica D., Vasiljevic I., Bubanja M., Georgiev G., Zeljko I., Differences in the morphological characteristics and body composition of football players of HSC Zrinjski Mostar and FC Siroki Brijeg in Bosnia and Herzegovina, Sport Mont, 16, 2, pp. 77-81, (2018); Baca A., Perl J., Modelling and Simulation in Sport and Exercise, (2018); Griffin L.L., Mitchell S.A., Oslin J.L., Teaching Sports Concepts and Skills: A Tactical Games Approach, (1997); Naghibi M., Madialagan S., Differential contributions to the ball control among the adolescent elite boy players playing in different positions, Afro Asian Journal of Anthropology and Social Policy, 3, 1, pp. 27-38, (2012); Gardasevic J., Bjelica D., Preparation period and its impact on the ball control with U16 soccer players, Kinesiologia Slovenica, 24, 3, pp. 31-36, (2018); Murr D., Feichtinger P., Larkin P., O'Connor D., Honer O., Psychological talent predictors in youth soccer: A systematic review of the prognostic relevance of psychomotor, perceptual-cognitive and personality-related factors, PLOS ONE, 13, 10, (2018); Schreiner P., Soccer: Perfect Ball Control, (2009); Malina R.M., Cumming S., Kontos A., Eisenmann J.C., Maturity-associated variation in sport-specific skills of youth soccer players aged 13-15 years, Journal of Sports Sciences, 23, 5, pp. 515-522, (2005); Singh B., Anthropometric, Physical Fitness, Psychological Parameters and Football Skills According to Playing Positions of Inter-Varsity Male Soccer Players, (2013); Scharfen H.E., Memmert D., The relationship between cognitive functions and sport-specific motor skills in elite youth soccer players, Frontiers in Psychology, 10, (2019); Morgans R., Orme P., Anderson L., Drust B., Principles and practices of training for soccer, Journal of Sport and Health Science, 3, 4, pp. 251-257, (2014); Singh K.M., Singh K., Kumar S., Relationship of physical fitness parameters with performance among the college level football players, International Journal of Current Research and Review, 9, 20, pp. 30-34, (2017); Stolen T., Chamari K., Castagna C., Wisloff U., Physiology of soccer: An update, Sports Medicine, 35, 6, pp. 501-536, (2005); Augustus S., Mundy P., Smith N., Support leg action can contribute to maximal instep soccer kick performance: An intervention study, Journal of Sports Sciences, 35, 1, pp. 89-98, (2017); Marques-Bruna P., Lees A., Grimshaw P., Structural principal components analysis of the kinematics of the soccer kick using different types of rating scales, International Journal of Sports Science & Coaching, 3, 1, pp. 73-85, (2008); Scurr J., Hall B., The effects of approach angle on penalty kicking accuracy and kick kinematics with recreational soccer players, Journal of Sports Science and Medicine, 8, 2, pp. 230-234, (2009); Davids K., Lees A., Burwitz L., Understanding and measuring coordination and control in kicking skills in soccer: Implications for talent identification and skill acquisition, Journal of Sports Sciences, 18, 9, pp. 703-714, (2000); Lees A., Nolan L., Three-dimensional kinematic analysis of the instep kick under speed and accuracy conditions, Science and Football IV, pp. 16-21, (2002); Kellis E., Katis A., Vrabas I.S., Effects of an intermittent exercise fatigue protocol on biomechanics of soccer kick performance, Scandinavian Journal of Medicine & Science in Sports, 16, 5, pp. 334-344, (2006); Ferraz R., van Den Tillaar R., Marques M.C., The effect of fatigue on kicking velocity in soccer players, Journal of Human Kinetics, 35, 1, pp. 97-107, (2012); Marques M.C., Pereira F., Marinho D.A., Reis M., Cretu M., van Den Tillaar R., A comparison of ball velocity in different kicking positions with dominant and non-dominant leg in junior soccer players, Journal of Physical Education and Sport, 11, 2, pp. 49-56, (2011); Sinclair J., Fewtrell D., Taylor P.J., Bottoms L., Atkins S., Hobbs S.J., Three-dimensional kinematic correlates of ball velocity during maximal instep soccer kicking in males, European Journal of Sport Science, 14, 8, pp. 799-805, (2014); Tant C.L., Browder K.D., Wilkerson J.D., A three-dimensional kinematic comparison of kicking techniques between Male and female soccer players, 9 International Symposium on Biomechanics in Sports, pp. 101-105, (1991); Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and Male soccer players, Journal of Sports Science and Medicine, 1, 3, pp. 72-79, (2002); Ben-Sira D., A Comparison of the Mechanical Characteristics of the Instep Kick between Skilled Soccer Players and Novices, (1980); Egan C.D., Verheul M.H.G., Savelsbergh G.J.P., Effects of experience on the coordination of internally and externally timed soccer kicks, Journal of Motor Behavior, 39, 5, pp. 423-432, (2007); Barbieri F.A., Gobbi L.T., Santiago P.R., Cunha S.A., Dominant-non-dominant asymmetry of kicking a stationary and rolling ball in a futsal context, Journal of Sports Sciences, 33, 13, pp. 1411-1419, (2015); Barbieri F.A., Gobbi L.T., Santiago P.R., Cunha S.A., Performance comparisons of the kicking of stationary and rolling balls in a futsal context, Sports Biomechanics, 9, 1, pp. 1-15, (2010); Davids K., Araujo D., Shuttleworth R., Applications of Dynamical Systems Theory to Football, Science and Football V: The Proceedings of the Fifth World Congress on Science and Football, (2005); Al-Khashab Z.Q., Al-Hayani M.K., Football, (1999); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (2013); Batterham A.M., Hopkins W.G., Making meaningful inferences about magnitudes, International Journal of Sports Physiology and Performance, 1, 1, pp. 50-57, (2006); Dave C., Seven steps to perfect ball control, Ball Control and Footwork, Tips and Advice; Iwanska D., Karczewska M., Madej A., Cz U., Symmetry of proprioceptive sense in female soccer players, Acta of Bioengineering and Biomechanics, 17, 2, pp. 155-163, (2015); Greve J., Alonso A., Bordini A.C., Camanho G.L., Correlation between body mass index and postural balance, Clinics, 62, 6, pp. 717-720, (2007); Teixeira L.A., Oliveira D.L., Romano R.G., Correa S.C., Leg preference and interlateral asymmetry of balance stability in soccer players, Research Quarterly for Exercise and Sport, 82, 1, pp. 21-27, (2011); Promsri A., Haid T., Federolf P., How does lower limb dominance influence postural control movements during single leg stance?, Human Movement Science, 58, pp. 165-174, (2018)","U. Hasan; Al-Kitab University, Department of Physical Education and Sports Sciences, Kirkuk, Altun Kupri, 36015, Iraq; email: dr_udayhusan@yahoo.com","","Sciendo","18991998","","","","English","Pol. J. Sport Tour.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85107841432" "Sánchez J.W.J.; Álvarez E.L.E.; Salazar J.A.A.; Alava D.J.H.; Cruz M.G.","Sánchez, Jorge Washington Jordán (57212008440); Álvarez, Edlita Lvonne Espinoza (57212002312); Salazar, Juan Alejandro Aguilar (57212006419); Alava, Dennis José Hidalgo (57212005560); Cruz, Manuel Gutiérrez (57201647441)","57212008440; 57212002312; 57212006419; 57212005560; 57201647441","Biomechanical study of penal shot: Comparison in youth and initiation soccer; [Estudio biomecánico del tiro penal: Comparación en futbolistas juveniles y de iniciación]","2018","Revista Cubana de Investigaciones Biomedicas","37","4","","","","","0","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85075647641&partnerID=40&md5=8a57cb0958b013ab070767275f3f566c","Universidad Técnica de Ambato, Ecuador; Universidad de Guayaquil, Ecuador","Sánchez J.W.J., Universidad Técnica de Ambato, Ecuador; Álvarez E.L.E., Universidad Técnica de Ambato, Ecuador; Salazar J.A.A., Universidad Técnica de Ambato, Ecuador; Alava D.J.H., Universidad Técnica de Ambato, Ecuador; Cruz M.G., Universidad de Guayaquil, Ecuador","Introduction: The criminal shot is decisive in the success of football, the effective execution of the sports technique involves biomechanical factors that determine motor success in terms of optimizing sports preparation. Objective: Biomechanically analyze the speed and acceleration with which the ball is hit. Methods: Under a non-probabilistic intentional sampling, the aforementioned variables were studied through professional videos to 19 athletes (Sub-12: 10 subjects; Sub-17: 9 subjects) executing the penalty shot under controlled conditions. Results: The average values at the angles of body inclination with respect to the ground were 127.7° (Sub-12) and 126.22° (Sub-17) respectively, the coordinates of the center of gravity on the X axis of 91.78 (U-12) and 132.15 (U-17) and on the Y axis of 66.26 (U-12) and 94.41 (U-17), knee flexion angles prior to impact with the 78.2° (Sub-12) and 79.22° (Sub-17) ball, and the impact with the 128.4° (Sub-12) and 134.88° (Sub-17) ball, the speed of 8.76 m/s (Sub-12) and 11.66 m/s (Sub-17), the acceleration of 69.46 m/s2 (Sub-12) and 82.14 m/s2 (Sub-17). The study was completed with an average effectiveness in shooting at goal of 80 % (U-12) and 67 % (U-17) respectively. Conclusions: Significant differences are demonstrated in general in terms of the technical level presented in the independent groups studied, indicating that the motor movement can vary depending on the age range investigated. © 2018, Editorial Ciencias Medicas. All rights reserved.","Biomechanics; Football; Penalty shot; Technique","","Ackland T.R., Elliott B., Bloomfield J., Applied Anatomy and Biomechanics in Sport, (2009); Hong Y., International Research in Sports Biomechanics, (2012); Leon S., Calero S., Chavez E., Morfología Funcional Y biomecánica Deportiva, (2016); Andrade J.B., Villarroya-Aparicio A., Morales S.C., Biomecánica de la marcha atlética: Análisis cinemático de su desarrollo y comparación con la marcha normal, Revista Cubana De Investigaciones Biomédicas, 36, 2, pp. 53-69, (2017); Gonzalez Catala S.A., Calero Morales S., Fundamentos psicológicos, biomecánicos E Higiene Y profiláxis De La Lucha Deportiva Quito: Universidad De Las Fuerzas Armadas ESPE, (2017); Ortega J.P., Camacho G.J., Medrano F.S., Análisis cinemático del penalty en fútbol, Apunts: Educación física Y Deportes, 4, 62, pp. 34-40, (2000); Benedek E., Fútbol Infantil Barcelona: Editorial Paidotribo, (2006); Lopes J.E., Araujo D., Duarte R., Davids K., Fernandes O., Instructional constraints on movement and performance of players in thepenalty kick, International Journal of Performance Analysis in Sport, 12, 2, pp. 311-345, (2012); Navia J.A., Ruiz L.M., Análisis de la complejidad perceptivo-motriz y psicológica del penalti en el fútbol, RICYDE. Revista Internacional De Ciencias Del Deporte; Asami T., Analysis of powerful ball kicking. Biomechanics, Biomechanics 6-B, 8, B, pp. 695-700, (1983); Guzman E.F., Técnica para detener tiros penales en el futbol, Revista Mexicana De Investigación En Cultura Física Y Deporte, 2, 2, pp. 150-160, (2016); Dicks M., Davids K., Button C., Individual differences in the visual control of intercepting a penalty kick in association football, Human Movement Science, 29, 3, pp. 401-411, (2010); Furley P., Dicks M., Stendtke F., Memmert D., Get it out the way. The wait's killing me."" hastening and hiding during soccer penalty kicks, Psychology of Sport and Exercise, 13, 4, pp. 454-465, (2012); Nunez Sanchez F.J., Sicilia A.O., Guerrero A., Pugnaire A.R., Anticipation in soccer goalkeepers during penalty kicking, International Journal of Sport Psychology, 36, 4, pp. 284-298, (2005); Goktepe A., Karabork H., Ak E., Cicek S., Korkusuz F., Kinematic analysis of penalty kick in soccer, J. Fac. Eng. Arch. Selcuk Univ., 23, 3, pp. 45-49, (2008); Jordet G., Hartman E., Visscher C., Lemmink K.A., Kicks from the penalty mark in soccer: The roles of stress, skill, and fatigue for kick outcomes, Journal of Sports Sciences, 25, 2, pp. 121-129, (2007); Palao J.M., Lopez Botella M., Relación entre eficacia, lateralidad y zona de lanzamiento del penalti en función del nivel de competición en fútbol, RICYDE. Revista Internacional De Ciencias Del Deporte; de la Osa S.R., Cordova B.S., Concepcion B.O., Madrigal A.L., Andre Y.V., Estudio de patrones de lateralidad en el equipo nacional de tenis de mesa de Cuba, Lecturas: Educación Física Y Deportes, 23, 247, pp. 40-49, (2018); Jonsson G.K., Anguera M., Sanchez Algarra P., Olivera C., Campanico J., Castaner M., Et al., Application of T-pattern detection and analysis in sports research, Open Sports Sciences Journal, 3, pp. 95-104, (2010); Teixeira M.C., Teixeira L.A., Leg preference and interlateral performance asymmetry in soccer player children, Developmental Psychobiology: The Journal of The International Society for Developmental Psychobiology, 50, 8, pp. 799-806, (2008); Lopez A.M., Gonzalez-Jurado J.A., Diferencias cinemáticas del golpeo de fútbol entre futbolistas expertos, Retos: Nuevas Tendencias En educación física, Deporte Y recreación, 21, pp. 63-66, (2012); Gonzalez-Jurado J.A., Sotomayor E.M., Icassatti D.C., Fundamentos biomecánicos de la técnica del chut en fútbol: Análisis de parámetros cinemáticos básicos, Educación Física Chile, 266, pp. 29-34, (2007); Juarez Santos-Garcia D., Navarro Valdivieso F., Análisis de la velocidad del balón en el golpeo en jugadores de fútbol sala en función del sistema de medición, la intención en la precisión del tiro, y su relación con otras acciones explosivas. Motricidad, European Journal of Human Movement, 15, pp. 1-6, (2010); Sanchez W.G., Alzate S.J., Gomez D.A., Quiceno B.H., Gesto técnico del pateo a balón detenido en fútbol: Estudio de caso, un análisis comparativo en 3d, VIREF Revista De Educación Física, 7, 2, pp. 15-35, (2018); Garcia E., Zabala M., La importancia del rango de movimiento de cadera y rodilla en el golpeo de empeine total en fútbol, Aplicaciones Para El Alto Rendimiento Y Para La enseñanza Del Gesto En fútbol-base. Lecturas: educación física Y Deportes., 10, 75, pp. 1-10, (2004); Juarez Santos-Garcia D., Lopez de Subijana Hernan C., Navarro Cabello E., Análisis del golpeo de balón y su relación con el salto vertical en futbolistas juveniles de alto nivel. RICYDE, Revista Internacional De Ciencias Del Deporte, 6, 19, pp. 29-41, (2010); Calero S., Fundamentos del entrenamiento deportivo optimizado, Curso De Postgrado De La Maestría En Entrenamiento Deportivo. XII Promoción. Quito: Universidad De Las Fuerzas Armadas ESPE, pp. 2-76, (2018); Linan A.S., El método comparativo: Fundamentos y desarrollos recientes, Política Comparada. Informe De Investigación. Pittsburgh: Universidad De Pittsburgh, Departamento De Ciencia Política, (2008); Prentice H., Métodos De Investigación, (1999); (2016); Azcona N., Kinovea: Software Libre Para Analizar Entrenamientos.; Correa J.E., Determinación del perfil antropométrico y cualidades físicas de niños futbolistas de Bogotá, Revista Ciencias De La Salud, 6, 2, pp. 74-84, (2008); Portella D.L., de Arruda M., Cossio-Bolanos M.A., Valoración del rendimiento físico de jóvenes futbolistas en función de la edad cronológica, Apunts Educación Física Y Deportes, 106, pp. 42-49, (2011); Verdugo M., El proceso de maduración biológica y el rendimiento deportivo, Revista Chilena De pediatría, 86, 6, pp. 383-385, (2015)","J.W.J. Sánchez; Universidad Técnica de Ambato, Ecuador; email: jw@uta.edu.ec","","Editorial Ciencias Medicas","08640300","","RCIBE","","Spanish","Rev. Cuba. Invest. Biomed.","Article","Final","","Scopus","2-s2.0-85075647641" "Herbst K.; Foss K.D.B.; Hewett T.E.; Stanfield D.T.; Myer G.D.","Herbst, Kristen (55762139300); Foss, Kim D. Barber (6507308390); Hewett, Timothy E (7005201943); Stanfield, Denver T. (55986434900); Myer, Gregory D (6701852696)","55762139300; 6507308390; 7005201943; 55986434900; 6701852696","Prospective Hip and Knee Strength Measures Associated with Increased Risk for Patellofemoral Pain Incidence","2014","Orthopaedic Journal of Sports Medicine","2","","","","","","0","10.1177/2325967114S00073","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978971661&doi=10.1177%2f2325967114S00073&partnerID=40&md5=d84814af6c2a32c3a013a2448fcde07c","Mercy Hospital Anderson, University of Cincinnati College of Medicine Program, Cincinnati, OH, United States; Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; The Ohio State U. Sports Health & Performance Inst., Columbus, OH, United States; Wellington Orthopedic and Spts Med., Cincinnati, OH, United States; Cincinnati Children's Hospital Medical Ctr, Cincinnati, OH, United States","Herbst K., Mercy Hospital Anderson, University of Cincinnati College of Medicine Program, Cincinnati, OH, United States; Foss K.D.B., Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Hewett T.E., The Ohio State U. Sports Health & Performance Inst., Columbus, OH, United States; Stanfield D.T., Wellington Orthopedic and Spts Med., Cincinnati, OH, United States; Myer G.D., Cincinnati Children's Hospital Medical Ctr, Cincinnati, OH, United States","Objectives: Hip and knee strength abnormalities have been implicated in patellofemoral pain (PFP) in multiple studies in the recent literature. However, many authors have noted that hip muscle weakness has not yet been defined as having a causal relationship to PFP due to the fact that many studies used subjects already diagnosed with PFP. The purpose of this study was to compare prospective hip and knee isokinetic strength measures in young females who subsequently went on to develop PFP relative to their uninjured healthy peers. Methods: Middle and high school female athletes (n=255) were evaluated by a physician for PFP prevalence. Isokinetic strength measurements of the knee (flexion and extension at 300°/sec) and hip (abduction at 120°/sec) were obtained prior to the start of their basketball and soccer seasons. Isokinetic torque measures (newton*meters) were normalized to leg length by mass and are described as a normalized torque (NT). Those diagnosed with PFP at pre-season were excluded and the remaining athletes were monitored by certified athletic trainers for PFP incidence during their competitive seasons. A one-way ANOVA was used to determine significant differences in knee and hip strength measures between the incident PFP and the control groups. Results: Young females who developed PFP were not different in age 12.6 ± 0.9 yrs., mass 51.4 ± 13.2 kg, height 158.8 ± 7.3 cm, or leg length 83.8 ± 4.2 cm compared to the referent control group (P0.05). Females who developed PFP demonstrated increased normalized hip strength 0.013 ± 0.003 NT relative to the referent control group 0.011 ± 0.003 NT (P0.05). Normalized knee extension and knee flexion strength were not different between the females with incident PFP compared to the referent control group (P0.05). Conclusion: The findings in this study indicate that young females with greater hip abduction strength may be at an increased risk for the development of PFP. Previous studies that have looked at landing biomechanics indicated that those with PFP have increased knee abduction and increased hip adduction during landing. Combining our current data and previous literature, we theorize that greater hip abduction strength may be a resultant symptom of increased eccentric loading of the hip abductors associated with increased dynamic valgus biomechanics demonstrated to underlie increased PFP incidence. Future research is warranted to dissect the relative contributions of hip strength and recruitment and dynamic valgus alignments during landing to the pathomechanics of PFP. © 2014, © The Author(s) 2014.","","abduction; adduction; Article; athlete; biomechanics; child; controlled study; female; high school student; hip; human; knee; knee function; leg length; middle school student; morbidity; muscle strength; muscle weakness; musculoskeletal system parameters; patellofemoral pain syndrome; priority journal; risk factor; torque","","","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-84978971661" "Ayalath L.R.; Bini R.; Wundersitz D.W.T.; Weerakkody N.; de Noronha M.","Ayalath, Lakshmi R. (57768838300); Bini, Rodrigo (24330525600); Wundersitz, Daniel W. T. (55804207800); Weerakkody, Nivan (6508354516); de Noronha, Marcos (14830244300)","57768838300; 24330525600; 55804207800; 6508354516; 14830244300","Effects of an intermittent exercise protocol on ankle control during a single-legged landing","2023","Sport Sciences for Health","19","3","","819","828","9","0","10.1007/s11332-022-00967-4","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85133003532&doi=10.1007%2fs11332-022-00967-4&partnerID=40&md5=fefcfa3f4a858f65a1f00199fdd46460","Department of Rural Allied Health, La Trobe Rural Health School, La Trobe University, Edwards Rd, Flora Hill, Bendigo, 3552, VIC, Australia; Department of Allied Health Science, Faculty of Medicine, University of Colombo, 25 Kynsey Rd, Colombo 8, Sri Lanka","Ayalath L.R., Department of Rural Allied Health, La Trobe Rural Health School, La Trobe University, Edwards Rd, Flora Hill, Bendigo, 3552, VIC, Australia, Department of Allied Health Science, Faculty of Medicine, University of Colombo, 25 Kynsey Rd, Colombo 8, Sri Lanka; Bini R., Department of Rural Allied Health, La Trobe Rural Health School, La Trobe University, Edwards Rd, Flora Hill, Bendigo, 3552, VIC, Australia; Wundersitz D.W.T., Department of Rural Allied Health, La Trobe Rural Health School, La Trobe University, Edwards Rd, Flora Hill, Bendigo, 3552, VIC, Australia; Weerakkody N., Department of Rural Allied Health, La Trobe Rural Health School, La Trobe University, Edwards Rd, Flora Hill, Bendigo, 3552, VIC, Australia; de Noronha M., Department of Rural Allied Health, La Trobe Rural Health School, La Trobe University, Edwards Rd, Flora Hill, Bendigo, 3552, VIC, Australia","Purpose: To identify the effects of fatigue from an exercise protocol (similar to a soccer match) on ankle motion and forces during single-legged drop landing. Methods: Seventeen males aged (mean ± SD) 22.2 ± 2.0 years participated in this repeated measures study. A 90-min intermittent exercise protocol with a 15-min rest at halftime was performed. Before, at halftime and after the exercise, participants were tested via a single-legged drop landing task onto a force platform whilst wearing a three-dimensional inertial measurement system (Xsens). Ankle angles (plantarflexion/dorsiflexion and inversion/eversion) were analysed before landing and at peak ground reaction force after landing, and center of pressure was analysed at peak ground reaction force. Results: No significant differences were found for the outcomes between pre-, halftime and post-exercise (p > 0.05). Conclusions: Findings suggest that exercises simulating a soccer match (regarding exertion) do not necessarily lead to significant changes in ankle motion or forces around the ankle. © 2022, The Author(s).","Biomechanics; Kinematics; Kinetics; Team sports","","Fong D.T.-P., Hong Y., Chan L.-K., Et al., A systematic review on ankle injury and ankle sprain in sports, Sports Med Auckl NZ, 37, pp. 73-94, (2007); Doherty C., Delahunt E., Caulfield B., Et al., The incidence and prevalence of ankle sprain injury: a systematic review and meta-analysis of prospective epidemiological studies, Sports Med, 44, pp. 123-140, (2014); de Noronha M., Lay E.K., Mcphee M.R., Et al., Ankle sprain has higher occurrence during the latter parts of matches: systematic review with meta-analysis, J Sport Rehabil, 28, pp. 373-380, (2019); Ekstrand J., Hagglund M., Walden M., Injury incidence and injury patterns in professional football: the UEFA injury study, Br J Sports Med, 45, pp. 553-558, (2011); Russell M., Rees G., Benton D., Kingsley M., An exercise protocol that replicates soccer match-play, Int J Sports Med, 32, pp. 511-518, (2011); Rampinini E., Impellizzeri F.M., Castagna C., Et al., Technical performance during soccer matches of the Italian Serie A league: effect of fatigue and competitive level, J Sci Med Sport, 12, pp. 227-233, (2009); Boyas S., Hajj M., Bilodeau M., Influence of ankle plantarflexor fatigue on postural sway, lower limb articular angles, and postural strategies during unipedal quiet standing, Gait Posture, 37, pp. 547-551, (2013); Dickin D.C., Johann E., Wang H., Popp J.K., Combined effects of drop height and fatigue on landing mechanics in active females, J Appl Biomech, 31, pp. 237-243, (2015); Schmitz R.J., Cone J.C., Tritsch A.J., Et al., Changes in drop-jump landing biomechanics during prolonged intermittent exercise, Sports Health, 6, pp. 128-135, (2014); McNeal J.R., Sands W.A., Stone M.H., Effects of fatigue on kinetic and kinematic variables during a 60-second repeated jumps test, Int J Sports Physiol Perform, 5, pp. 218-229, (2010); Augustsson J., Thomee R., Linden C., Et al., Single-leg hop testing following fatiguing exercise: reliability and biomechanical analysis, Scand J Med Sci Sports, 16, pp. 111-120, (2006); Pau M., Ibba G., Attene G., Fatigue-induced balance impairment in young soccer players, J Athl Train, 49, pp. 454-461, (2014); Cone J.R., Berry N.T., Goldfarb A.H., Et al., Effects of an individualized soccer match simulation on vertical stiffness and impedance, J Strength Cond Res, 26, pp. 2027-2036, (2012); Kipp K., Acute and delayed effects of an exhaustive bout of exercise on landing biomechanics in women and men, (2009); Madigan M.L., Pidcoe P.E., Changes in landing biomechanics during a fatiguing landing activity, J Electromyogr Kinesiol, 13, pp. 491-498, (2003); Nicholas C.W., Nuttall F.E., Williams C., The Loughborough Intermittent Shuttle Test: a field test that simulates the activity pattern of soccer, J Sports Sci, 18, pp. 97-104, (2000); Kingsley M.I., Wadsworth D., Kilduff L.P., Et al., Effects of phosphatidylserine on oxidative stress following intermittent running, Med Sci Sports Exerc, 37, pp. 1300-1306, (2005); Ramsbottom R., Brewer J., Williams C., A progressive shuttle run test to estimate maximal oxygen uptake, Br J Sports Med, 22, pp. 141-144, (1988); Pre-Exercise Screening Systems; Hiller C.E., Refshauge K.M., Bundy A.C., Et al., The Cumberland ankle instability tool: a report of validity and reliability testing, Arch Phys Med Rehabil, 87, pp. 1235-1241, (2006); Leger L.A., Lambert J., A maximal multistage 20-m shuttle run test to predict VO2 max, Eur J Appl Physiol, 49, pp. 1-12, (1982); Markovic S., Mirkov D.M., Nedeljkovic A., Jaric S., Body size and countermovement depth confound relationship between muscle power output and jumping performance, Hum Mov Sci, 33, pp. 203-210, (2014); Borg G.A., Psychophysical bases of perceived exertion, Med Sci Sports Exerc, (1982); Brazen D.M., Todd M.K., Ambegaonkar J.P., Et al., The effect of fatigue on landing biomechanics in single-leg drop landings, Clin J Sport Med, 20, pp. 286-292, (2010); Delahunt E., Monaghan K., Caulfield B., Changes in lower limb kinematics, kinetics, and muscle activity in subjects with functional instability of the ankle joint during a single leg drop jump, J Orthop Res, 24, pp. 1991-2000, (2006); Duarte M., Freitas S.M., Revision of posturography based on force plate for balance evaluation, Braz J Phys Ther, 14, pp. 183-192, (2010); Linthorne N.P., Analysis of standing vertical jumps using a force platform, Am J Phys, 69, pp. 1198-1204, (2001); Rosner B., Fundamentals of biostatistics, (1995); Orishimo K.F., Kremenic I.J., Effect of fatigue on single-leg hop landing biomechanics, J Appl Biomech, 22, pp. 245-254, (2006); Greig M., Walker-Johnson C., The influence of soccer-specific fatigue on functional stability, Phys Ther Sport, 8, pp. 185-190, (2007); Rodacki A.L.F., Fowler N.E., Bennett S.J., Vertical jump coordination: fatigue effects, Med Sci Sports Exerc, 34, pp. 105-116, (2002); Garcia-Pinillos F., Molina-Molina A., Latorre-Roman P.A., Impact of an incremental running test on jumping kinematics in endurance runners: can jumping kinematic explain the post-activation potentiation phenomenon?, Sports Biomech, 15, pp. 103-115, (2016)","M. de Noronha; Department of Rural Allied Health, La Trobe Rural Health School, La Trobe University, Bendigo, Edwards Rd, Flora Hill, 3552, Australia; email: m.denoronha@latrobe.edu.au","","Springer-Verlag Italia s.r.l.","18247490","","","","English","Sport Sci. Health","Article","Final","All Open Access; Green Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85133003532" "Ali M.F.B.M.; Kamaruddin M.K.A.B.; Azidin R.M.F.B.R.","Ali, Mohd Firdaus Bin Mahamad (23109979400); Kamaruddin, Mohd Khairul Amri Bin (36546065200); Azidin, Raja Mohammed Firhad Bin Raja (42862343900)","23109979400; 36546065200; 42862343900","Modelling equation of soccer shoes design among Malaysia soccer players","2022","Journal of Physical Education and Sport","22","11","","2694","2699","5","0","10.7752/jpes.2022.11343","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143538761&doi=10.7752%2fjpes.2022.11343&partnerID=40&md5=57f8f8ae7f3b981d84043d3481f5d9f8","East Coast Environmental Research Institute (ESERI), Universiti Sultan Zainal Abidin, Gong Badak Campus, Kuala Nerus, Terengganu, 21300, Malaysia; Faculty of Creative Technology & Herittage, Universiti Malaysia Kelantan, Bachok, Kelantan, 16300, Malaysia; Faculty of Applied Social Science, Universiti Sultan Zainal Abidin, Gong Badak Campus, Kuala Nerus, Terengganu, 21300, Malaysia; Faculty of Sports Science & Recreation, Universiti Teknologi MARA, Selangor, Shah Alam, 40450, Malaysia","Ali M.F.B.M., East Coast Environmental Research Institute (ESERI), Universiti Sultan Zainal Abidin, Gong Badak Campus, Kuala Nerus, Terengganu, 21300, Malaysia, Faculty of Creative Technology & Herittage, Universiti Malaysia Kelantan, Bachok, Kelantan, 16300, Malaysia; Kamaruddin M.K.A.B., Faculty of Creative Technology & Herittage, Universiti Malaysia Kelantan, Bachok, Kelantan, 16300, Malaysia, Faculty of Applied Social Science, Universiti Sultan Zainal Abidin, Gong Badak Campus, Kuala Nerus, Terengganu, 21300, Malaysia; Azidin R.M.F.B.R., Faculty of Sports Science & Recreation, Universiti Teknologi MARA, Selangor, Shah Alam, 40450, Malaysia","Sports knowledge contribution that focuses on product design and performance enhancement is still limited, particularly in Malaysia as compared to other countries. This includes mechanical features of footwear based on biomechanics, morphological features based on anatomy and anthropometry, physical features based on environmental factors, which determined foot and body disorders. Soccer shoes, an important component of soccer equipment, may play a role in over exposure to injury. Soccer shoes evolution is all the more challenging, because the design and mechanical structure differ in various aspects compared to other modern shoes developed for sport. The objective of this study is to identify the factors affecting soccer shoes design of Malaysian soccer players. A total of 398 Malaysian male soccer players from various ages and game categories were selected for this study. This study used the quantitative method, whereby questionnaires were applied to obtain information from respondents. The three selected independent variables, namely anatomy, anthropometry and biomechanics have been chosen to identify the significant contribution to the design of soccer shoes. Statistical analysis was carried out using the Statistical Package for the Social Sciences (SPSS) software version 26.0. The related equation for each variable was obtained through the analysis of variance (ANOVA) and regression model. The value of R squared (R2 = 0.633) showed the overall contribution of the three variables in the design of soccer shoes amongst Malaysian soccer players. Based on the findings, the multiple linear regression equation was Y = 0.697 + 0.417X1 + 0.007X2 + 0.375X3. This study revealed that the dominant variables contribution was anatomy followed by biomechanics and anthropometry in the soccer shoes design. © 2022, Editura Universitatii din Pitesti. All rights reserved.","Anatomy; Anthropometry; Biomechanics; Design; Soccer shoes","","Best J. W., Kahn J. V., Research in Education, (2006); Blanchard S., Palestri J., Guer J.L, BEHR M., Current Soccer Footwear, Its Role in Injuries and Potential for Improvement, Sports Med Int Open, 2, 2, (2018); Bond T. G., Fox C. M., Applying The Rasch Model Fundamental Measurement in the Human Sciences, (2016); Chaiwanichsiri D., Tantisiriwat N., Janchai S., Proper shoe size for Thai elderly, The Foot, 18, pp. 186-191, (2008); Cohen L., Marrion L., Marrison K., Research Methods Education, British Journal of Educational, (2001); Frederick E.C., Kinematically mediated effects of sport shoe design: A review, Journal of Sports Sciences, 4, 3, pp. 169-184, (1986); Hafizoglu O.O, A Research on Footwear and Foot Interaction Through Anatomy and Human Engineering, (2005); Hennig E. M., Sterzing T., The influence of soccer shoe design on playing performance: a series of biomechanical studies, Footwear Science, 2, pp. 3-11, (2010); Kinchington M, Ball K, Naughton G., Monitoring of lower limb comfort and injury in elite football, J Sports Sci Med, 9, pp. 652-663, (2010); Kinchington M, Ball K, Naughton G., Relation between lower limb comfort and performance in elite footballers, Phys Ther Sport, 13, pp. 27-34, (2012); Kouchi M., Foot dimensions and foot shape: Differences due to growth, generation and ethnic origin, Antropological Science, 106, pp. 161-188, (1998); Kunz H., Big count-265 million playing football, FIFA Magazine, pp. 10-15, (2007); Lees A, Nolan L., The biomechanics of soccer: A review, J Sports Sci, 16, pp. 211-234, (1998); Lees A., Kewley P., The demands on the soccer boot, Science and Football, 2, pp. 335-340, (1993); Logan B. M., Bowden D. J, Hutchings R. T., McMinn's Color Atlas of Lower Limb Anatomy, (2017); Luximon A., Goonetilleke R.S., Zhang M., 3D foot shape generation from 2D Information, Ergonomics, 48, 6, pp. 625-641, (2005); Mauch M., Mickle K.J., Munro B.J., Dowling A.B., Grau S., Steele J.R., Do the feet of German and Australian children differ in structure? Impication for children’s shoe design, Ergonomics, 51, pp. 527-539, (2008); McPoil T. G., Athletic footwear: design, performance and selection issues, Journal of Science and Medicine in Sport, 3, 3, pp. 260-267, (2000); Naimah M.S., Mumtazah O., Shamsul Azahari Z.B., Nurizan Y., Sharizal B., Development of clothing sizing system among children in Peninsula Malaysia, Jurnal of Malaysian Consumer, 9, pp. 44-53, (2007); Nigg B.M, Cole G.K, Nachbauer W., Effects of arch height of the foot on angular motion of the lower extremities in running, J Biomech, 26, pp. 909-916, (1999); O'Connor A.M., James I.T., Association of lower limb injury with boot cleat design and playing surface in elite soccer, Foot Ankle Clin, 18, pp. 369-380, (2013); Razeghi M., Batt M., Foot type classification: A critical review of current methods, Gait & Posture, 15, pp. 282-291, (2002); Regmi P. R., Waithaka E., Paudyal A., Simkhada P., Teijlingen E. V., Guide to the design and applicatio of online questionnaire surveys, Nepal J Epidemiol, 6, 4, pp. 640-644, (2016); Rossi W.A., Children’s Footwear: Launching Site for Adult Foot Ills, pp. 83-100, (2002); Sebo P, Herrmann F.R, Haller D. M, Accuracy of anthropometric measurements by general practitioners in overweight and obese patients, BMC Obes, 4, (2017); Sekaran U., Bougie R., Research Methods for Business, In Research methods for business, (2002); Sterzing T., Soccer boots and playing surfaces in Soccer science, pp. 179-202, (2016); Trochim W.M., Nonprobability sampling, (2006); Ujevic D., Drenovac M., Pezelj D., Hrastinski M., Narancic N.S., Mimica Z., Hrzenjak R., Croatian anthropometric system meeting the European Union, International Journal of Clothing Science and Technology, 18, pp. 200-218, (2006); Unlucan D., Jersey sponsors in football/soccer: the industry classification of main jersey sponsors of football/soccer clubs in top leagues of 79 countries, Soccer & Society, 16, 1, pp. 42-62, (2014); Vass L., Molnar M., Handmade shoes for men, (1999); Waterson P., Sell R., Recurrent themes and developments in the history of the ergonomics society, Ergonomics, 49, 8, pp. 743-799, (2006); Watkins J., Fundamental Biomechanics of Sport and Exercise, (2014)","M.F.B.M. Ali; East Coast Environmental Research Institute (ESERI), Universiti Sultan Zainal Abidin, Gong Badak Campus, Kuala Nerus, Terengganu, 21300, Malaysia; email: mfirdaus.ma@umk.edu.my","","Editura Universitatii din Pitesti","22478051","","","","English","J. Phys. Educ. Sport","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85143538761" "Secco Faquin B.; Teixeira L.A.; Coelho Candido C.R.; Boari Coelho D.; Bayeux Dascal J.; Alves Okazaki V.H.","Secco Faquin, Bruno (55788503600); Teixeira, Luis Augusto (35612842600); Coelho Candido, Cristiane Regina (57191409783); Boari Coelho, Daniel (56215583600); Bayeux Dascal, Juliana (58482403800); Alves Okazaki, Victor Hugo (53871879800)","55788503600; 35612842600; 57191409783; 56215583600; 58482403800; 53871879800","Prediction of ball direction in soccer penalty through kinematic analysis of the kicker","2023","Journal of Sports Sciences","41","7","","668","676","8","0","10.1080/02640414.2023.2232679","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85164496200&doi=10.1080%2f02640414.2023.2232679&partnerID=40&md5=4fe34d81e2bbd9d87b488fd769eaccde","Department of Physical Education, State University of Londrina, Londrina, Brazil; Physical Education and Sport Center, Federal Institute of São Paulo, Sertãozinho, Brazil; School of Physical Education and Sports, University of São Paulo, São Paulo, Brazil; Biomedical Engineering, Federal University of ABC, São Paulo, Brazil","Secco Faquin B., Department of Physical Education, State University of Londrina, Londrina, Brazil, Physical Education and Sport Center, Federal Institute of São Paulo, Sertãozinho, Brazil; Teixeira L.A., School of Physical Education and Sports, University of São Paulo, São Paulo, Brazil; Coelho Candido C.R., Department of Physical Education, State University of Londrina, Londrina, Brazil; Boari Coelho D., Biomedical Engineering, Federal University of ABC, São Paulo, Brazil; Bayeux Dascal J., Department of Physical Education, State University of Londrina, Londrina, Brazil; Alves Okazaki V.H., Department of Physical Education, State University of Londrina, Londrina, Brazil","The penalty kick is a crucial opportunity to score and determine the outcome of a soccer match or championship. Anticipating the direction of the ball is key for goalkeepers to enhance their defensive capabilities, considering the ball's swift travel time. However, it remains unclear which kinematic cues from the kicker can predict the ball's direction. This study aimed to identify the variables that predict the ball's direction during a soccer penalty kick. Twenty U19 soccer players executed penalty kicks towards four targets positioned in the goal, while kinematic analysis was conducted using a 3D motion analysis system. Logistic regression analysis revealed that trunk rotation in the transverse plane (towards the goal–left; or slightly to the right–right) served as the primary predictor of the ball's horizontal direction at 250 and 150 ms before the kicking foot made contact. Additionally, the height of the kicking foot in the sagittal plane solely predicted the vertical direction at the moment of contact. This information, encompassing trunk rotation and kicking foot height, can be employed in perceptual training to enhance decision-making and the implementation of feints during penalty kicks. © 2023 Informa UK Limited, trading as Taylor & Francis Group.","anticipation; Biomechanics; decision-making; penalty soccer; prediction","Biomechanical Phenomena; Cues; Foot; Humans; Lower Extremity; Soccer; association; biomechanics; foot; human; lower limb; soccer","Abernethy B., Expert–novice differences in perception: How expert does the expert have to be?, Canadian Journal of Applied Sport Sciences, 14, 1, pp. 27-30, (1989); Abernethy B., Anticipation in squash: Differences in advance cue utilization between expert and novice players, Journal of Sports Sciences, 8, 1, pp. 17-34, (1990); Araujo D., Davids K., Hristovski R., The ecological dynamics of decision making in sport, Psychology of Sport and Exercise, 7, 6, pp. 653-676, (2006); Asai T., Nunome H., Maeda A., Matsubara S., Lake M., Computer simulation of ball kicking using the finite element skeletal foot model, Science and Football V: The Proceedings of the Fifth World Congress on Sports Science and Football, pp. 77-82, (2005); Augustus S., Hudson P.E., Smith N., Defining movement strategies in soccer instep kicking using the relationship between pelvis and kick leg rotations, Sports Biomechanics, pp. 1-12, (2022); Bazo N.S., Marcori A.J., Monteiro P.H.M., Okazaki V.H.A., Cultural and environmental aspects influence lateral preferences, International Journal of Psychology, 57, 6, pp. 753-759, (2022); Busca B., Hileno R., Nadal B., Serna J., Prediction of the penalty kick direction in men’s soccer, International Journal of Performance Analysis in Sport, 22, 4, pp. 571-582, (2022); Causer J., Smeeton N.J., Williams A.M., Sampaio J., Expertise differences in anticipatory judgements during a temporally and spatially occluded task, PLoS ONE, 12, 2, pp. 1-12, (2017); Diaz G.J., Fajen B.R., Phillips F., Anticipation from biological motion: The goalkeeper problem, Journal of Experimental Psychology: Human Perception and Performance, 38, 4, pp. 848-864, (2012); Dicks M., Davids K., Button C., Individual differences in the visual control of intercepting a penalty kick in association football, Human Movement Science, 29, 3, pp. 401-411, (2010); Farrow D., Abernethy B., Jackson R.C., Probing expert anticipation with the temporal occlusion paradigm: experimental investigations of some methodological issues, Motor Control, 9, 3, pp. 330-349, (2005); Field A., Descobrindo a Estatística usando o SPSS, (2009); Franks I.M., Harvey T., Cues for goalkeepers: High-tech methods used to measure penalty shot response, Soccer Journal, 42, 3, pp. 30-33, (1997); Gibson J.J., The ecological approach to visual perception, (1979); Hair J., Black W., Babin B., Anderson R., Tatham R., Análise multivariada de dados, (2009); Hay J.G., The biomechanics of sports techniques, (1985); Laws of the game 20/21, 1, (2020); Jackson R.C., Mogan P., Advance visual information, awareness, and anticipation skill, Journal of Motor Behavior, 39, 5, pp. 341-351, (2007); Jackson R.C., Warren S., Abernethy B., Anticipation skill and susceptibility to deceptive movement, Acta Psychologica, 123, 3, pp. 355-371, (2006); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, Journal of Sports Science and Medicine, 6, 2, pp. 154-165, (2007); Kuhn W., Penalty-kick strategies for shooters and goalkeepers, Science and football, pp. 489-492, (1988); Langhout R., Weber M., Tak I., Lenssen T., Timing characteristics of body segments during the maximal instep kick in experienced football players, The Journal of Sports Medicine and Physical Fitness, 56, 7-8, pp. 849-856, (2015); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: A review, Journal of Sports Sciences, 28, 8, pp. 805-817, (2010); Lees A., Nolan L., The biomechanics of soccer: A review, Journal of Sports Sciences, 16, 3, pp. 211-234, (1998); Lees A., Owens L., Early visual cues associated with a directional place kick in soccer, Sports Biomechanics, 10, 2, pp. 125-134, (2011); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Medicine and Science in Sports and Exercise, 30, 6, pp. 917-927, (1998); Li Y., Alexander M.J.L., Glazebrook C.M., Leiter J., Prediction of kick direction from kinematics during the soccer penalty kick, International Journal of Kinesiology and Sports Science, 3, 4, (2015); Lopes J.E.J.E., Araujo D., Duarte R., Davids K., Fernandes O., Araujo D., Duarte R., Davids K., Fernandes O., Instructional constraints on movement and performance of players in the penalty kick, International Journal of Performance Analysis in Sport, 12, 2, pp. 331-345, (2012); Lopes J.E., Jacobs D.M., Travieso D., Araujo D., Predicting the lateral direction of deceptive and non-deceptive penalty kicks in football from the kinematics of the kicker, Human Movement Science, 36, pp. 199-216, (2014); Maroco J., Análise Estatística - Com Utilização do SPSS, (2007); McMorris T., Colenso S., Anticipation of professional soccer goalkeepers when facing right- and left-footed penalty kicks, Perceptual and Motor Skills, 82, 3, pp. 931-934, (1996); McMorris T., Copeman R., Corcoran D., Saunders G., Potter S., Anticipation of soccer goalkeepers facing penaltykicks, Science and Football, 2, pp. 250-253, (1992); Morya E., Bigatao H., Evolving penalty kick strategies: World cup and club matches 2000–2002, Science and Football V: The Proceedings of the Fifth World Congress on Sports Science and Football, pp. 241-247, (2005); Njororai W.W.S., Analysis of goals scored in the 2010 world cup soccer tournament held in South Africa, Journal of Physical Education and Sport, 13, 1, pp. 6-13, (2013); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Medicine and Science in Sports and Exercise, 34, 12, pp. 2028-2036, (2002); Okazaki V.H.A., Monteiro P.H.M., Técnicas adequadas marcam pontos, decisões corretas ganham jogos: treinamento perceptivo aplicado ao tênis, Tênis com Ciência, pp. 279-294, (2021); Okazaki V.H.A., Teixeira L.A., Rodacki A.L.F., Eficácia da análise residual para determinar a intensidade do filtro na cinemática, XII Congresso Brasileiro de Biomecânica, 12, 1, pp. 1-5, (2007); Okazaki V.H.A., Teixeira L.A., Rodacki A.L.F., Frequência de amostragem e filtragem na cinemática, XII Congresso Brasileiro de Biomecânica, 12, 1, pp. 2-6, (2007); Prassas S.G., Terauds J.G., Nathan T.A., Three-dimensional kinehatic analysis of high and low trajectory kicks in soccer, ISBS-Conference Proceedings Archive, 1, pp. 145-149, (1990); Savelsbergh G.J.P., van der Kamp J., Williams A.M., Ward P., Anticipation and visual search behaviour in expert soccer goalkeepers, Ergonomics, 48, 11-14, pp. 1686-1697, (2005); Savelsbergh G.J.P.P., Williams A.M., van der Kamp J., Ward P., Visual search, anticipation and expertise in soccer goalkeepers, Journal of Sports Sciences, 20, 3, pp. 279-287, (2002); Shan G., Westerhoff P., Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomechanics, 4, 1, pp. 59-72, (2005); Shan G., Zhang X., From 2D leg kinematics to 3D full-body biomechanics-the past, present and future of scientific analysis of maximal instep kick in soccer, Sports Medicine, Arthroscopy, Rehabilitation, Therapy & Technology: SMARTT, 3, 1, (2011); Shim J., Carlton L.G., Chow J.W., Chae W.-S., The use of anticipatory visual cues by highly skilled tennis players, Journal of Motor Behavior, 37, 2, pp. 164-175, (2005); Shim J., Miller G., Lutz R., Visual cues and information used to anticipate tennis ball shot and placement, Journal of Sport Behavior, 28, 2, pp. 186-200, (2005); Starkes J.L., Edwards P., Dissanayake P., Dunn T., A new technology and field test of advance cue usage in volleyball, Research Quarterly for Exercise and Sport, 66, 2, pp. 162-167, (1995); Wang Y., Ji Q., Zhou C., Effect of prior cues on action anticipation in soccer goalkeepers, Psychology of Sport and Exercise, 43, 399, pp. 137-143, (2019); Williams A.M., Davids K., Burwitz L., Williams J.G., Visual search strategies in experienced and inexperienced soccer players, Research Quarterly for Exercise and Sport, 65, 2, pp. 127-135, (1994); Williams A.M., Ericsson K.A., Perceptual-cognitive expertise in sport: Some considerations when applying the expert performance approach, Human Movement Science, 24, 3, pp. 283-307, (2005); Williams A.M., Ward P., Anticipation and decision making: exploring new horizons, Handbook of sport psychology, 3, pp. 203-223, (2012); Winter D., Biomechanics and motor control of human movement, (1990)","B. Secco Faquin; Department of Physical Education, State University of Londrina, Londrina, Brazil; email: brunopoti@hotmail.com","","Routledge","02640414","","JSSCE","37409691","English","J. Sports Sci.","Article","Final","","Scopus","2-s2.0-85164496200" "Du X.","Du, Xufeng (57359750200)","57359750200","FUNCTIONAL TRAINING ON ANKLE SPRAIN REHABILITATION IN SOCCER PLAYERS; [TREINAMENTO FUNCIONAL SOBRE A REABILITAÇÃO DA ENTORSE DE TORNOZELO NOS JOGADORES DE FUTEBOL]; [ENTRENAMIENTO FUNCIONAL EN LA REHABILITACIÓN DEL ESGUINCE DE TOBILLO EN LOS JUGADORES DE FÚTBOL]","2022","Revista Brasileira de Medicina do Esporte","28","6","","709","712","3","0","10.1590/1517-8692202228062022_0085","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85131840363&doi=10.1590%2f1517-8692202228062022_0085&partnerID=40&md5=c9a8bc511c82e958f283e2a3c4e97f2d","Shanxi Medical University, Physical Education Department, Taiyuan, 030001, China","Du X., Shanxi Medical University, Physical Education Department, Taiyuan, 030001, China","Introduction: An ankle sprain is a common soccer injury. Functional training is used to rehabilitate muscle strength with undiscovered benefits on soccer players’ recovery. Objective: Explore the functional training effects on ankle injury recovery in soccer players. Methods: 29 amateur soccer players were randomly assigned to control (n=15) and experimental (n=14) groups with no statistical difference in age or sex (P>0.05). The experimental group used functional rehabilitation training, while the control group was treated with traditional rehabilitation methods. Both groups practiced 30 to 40 minutes of rehabilitation, three times a week, for two months. Mathematical statistics were used to analyze the effects of different injury rehabilitation on the two groups, estimating the ankle joint continuous motion angle by the tibialis anterior muscle electromyogram responses. Results: The ankle instability assessment questionnaires were statistically different between the two groups of patients after rehabilitation training (P<0.05). There was a statistical difference in the agility test after the intervention. The ankle capacity score and agility test score were better in the experimental group (P<0.05). Conclusion: Functional rehabilitation training can improve ankle performance after a sprain. This training can also help athletes avoid future sprains and is recommended as preventive training. © 2022, Redprint Editora Ltda. All rights reserved.","Ankle Joint; Exercise Therapy; Resistance Training; Soccer","adult; agility; agility test score; ankle capacity score; ankle injury; ankle instability; ankle sprain; Article; athlete; biomechanics; clinical article; controlled study; disease assessment; electromyogram; exercise; female; functional training; gastrocnemius muscle; human; joint instability; jumping; male; mathematical analysis; muscle contraction; muscle strength; physiotherapy; questionnaire; range of motion; resistance training; scoring system; skeletal muscle; soccer; soccer player; sprain; squatting (exercise); statistical analysis; stretching exercise; tibialis anterior muscle; training; unconsciousness; walking; weight bearing; young adult","Mack CD, Hershman EB, Anderson RB, Coughlin MJ, McNitt AS, Sendor RR, Et al., Higher rates of lower extremity injury on synthetic turf compared with natural turf among National Football League athletes: epidemiologic confirmation of a biomechanical hypothesis, The American journal of sports medicine, 47, 1, pp. 189-196, (2019); D'Hooghe P, Grassi A, Alkhelaifi K, Calder J, Baltes TP, Zaffagnini S, Et al., Return to play after surgery for isolated unstable syndesmotic ankle injuries (West Point grade IIB and III) in 110 male professional football players: a retrospective cohort study, British journal of sports medicine, 54, 19, pp. 1168-1173, (2020); Song K, Wikstrom EA, Tennant JN, Guskiewicz KM, Marshall SW, Kerr ZY., Osteoarthritis prevalence in retired National football League players with a history of ankle injuries and surgery, Journal of athletic training, 54, 11, pp. 1165-1170, (2019); Moreno-Perez V, Soler A, Ansa A, Lopez-Samanes A, Madruga-Parera M, Beato M, Et al., Acute and chronic effects of competition on ankle dorsiflexion ROM in professional football players, European journal of sport science, 20, 1, pp. 51-60, (2020); Fong DT, Leung WC, Mok KM, Yung PS., Delayed ankle muscle reaction time in female amateur footballers after the first 15 min of a simulated prolonged football protocol, Journal of Experimental Orthopaedics, 7, 1, pp. 1-8, (2020); Owoeye OB, VanderWey MJ, Pike I., Reducing injuries in soccer (football): an umbrella review of best evidence across the epidemiological framework for prevention, Sports medicine-open, 6, 1, pp. 1-8, (2020); Ginting S, Kumaat NA., Analysis of The Causes of Factors and Types of Injuries in Football Game and Its Impact on The Psychic Condition of Athletes, STRADA Jurnal Ilmiah Kesehatan, 10, 1, pp. 1000-1008, (2021); Crossley KM, Patterson BE, Culvenor AG, Bruder AM, Mosler AB, Mentiplay BF., Making football safer for women: a systematic review and meta-analysis of injury prevention programmes in 11 773 female football (soccer) players, British journal of sports medicine, 54, 18, pp. 1089-1098, (2020); Whalan M, Lovell R, McCunn R, Sampson JA., The incidence and burden of time loss injury in Australian men’s sub-elite football (soccer): a single season prospective cohort study, Journal of science and medicine in sport, 22, 1, pp. 42-47, (2019); Hassan I, Musa RM, Azmi MNL, Abdullah MR, Abdullah ATH., News Reporting of Injury Prevalence in Football: A Study of Selected Nigerian Online Newspapers, Media Watch, 11, 2, pp. 323-336, (2020); Herzog MM, Kerr ZY, Marshall SW, Wikstrom EA., Epidemiology of ankle sprains and chronic ankle instability, Journal of athletic training, 54, 6, pp. 603-610, (2019)","X. Du; Shanxi Medical University, Physical Education Department, Taiyuan, 030001, China; email: dxf0808@126.com","","Redprint Editora Ltda","15178692","","RBMEB","","English","Rev. Bras. Med. Esporte","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85131840363" "Ou Y.-C.; Lei M.K.; Cheng K.B.","Ou, Yu-Cheng (57552126300); Lei, Man Kit (57220043058); Cheng, Kuangyou B. (8565494700)","57552126300; 57220043058; 8565494700","Effect of support foot placement on football instep kick performance","2023","Science and Medicine in Football","7","1","","34","40","6","0","10.1080/24733938.2022.2055781","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127132637&doi=10.1080%2f24733938.2022.2055781&partnerID=40&md5=37814167279111a03fb5ba2921efdeb3","Institute of Physical Education, Health and Leisure Studies, National Cheng Kung University, Tainan, Taiwan","Ou Y.-C., Institute of Physical Education, Health and Leisure Studies, National Cheng Kung University, Tainan, Taiwan; Lei M.K., Institute of Physical Education, Health and Leisure Studies, National Cheng Kung University, Tainan, Taiwan; Cheng K.B., Institute of Physical Education, Health and Leisure Studies, National Cheng Kung University, Tainan, Taiwan","Although the support foot plays an important role in kicking a football, there has been a paucity of research exploring the effect of the placement of the support foot on kicking performance. To investigate the kick performance under different support foot positions, ten male footballers were recruited to participate in two experiments: one determining the maximum ball speed and the second determining accuracy. The participants were instructed to plant their support foot on one of nine different spots marked in the form of a 3 × 3 shape on a piece of artificial grass and asked to kick the ball. In the first (maximum speed) test, the participants tried their best to kick the ball at the maximum ball speed from nine different support foot positions. In the second (accuracy) test, the participants kicked the ball toward the target area without restricting the support foot position. The ball speed, as well as the success rate, were recorded from each support foot position. Significantly higher ball speed and accuracy were obtained at medial positions than was the case at lateral positions from the nine spots. It was concluded that although footballers may choose different positions for support foot placement, the maximum ball speed and better accuracy could be expected when the support foot was next to or slightly in front of the ball centre without too much side-by-side separation (27–37 cm). © 2022 Informa UK Limited, trading as Taylor & Francis Group.","accuracy; foot position; maximum ball speed; Soccer; support leg","Biomechanical Phenomena; Foot; Football; Humans; Lower Extremity; Soccer; biomechanics; foot; football; human; lower limb; soccer","Alcock A.M., Gilleard W., Hunter A.B., Baker J., Brown N., Curve and instep kick kinematics in elite female footballers, J Sports Sci, 30, 4, pp. 387-394, (2012); Andersen T.B., Collisions in soccer kicking, Sports Eng, 2, 2, pp. 121-125, (1999); Asai T., Carre M.J., Akatsuka T., Haake S.J., The curve kick of a football I: impact with the foot, Sports Eng, 5, 4, pp. 183-192, (2002); Asami T., Analysis of powerful ball kicking, Biomechanics, 8, pp. 695-700, (1983); Augustus S., Mundy P., Smith N., Support leg action can contribute to maximal instep soccer kick performance: an intervention study, J Sports Sci, 35, 1, pp. 89-98, (2017); Ball K., Kick impact characteristics for different rugby league kicks, Kick impact characteristics for different rugby league kicks. In: Proceedings of 28th International Conference on Biomechanics in Sports., (2010); Ball K., Application of biomechanical kicking research, In: Proceedings of 30th International Conference on Biomechanics in Sports, (2012); Barfield W.R., The biomechanics of kicking in soccer, Clin Sports Med, 17, 4, pp. 711-728, (1998); Barfield W.R., Kirkendall D.T., Yu B., Kinematic instep kicking differences between elite female and male soccer players, J Sports Sci Med, 1, 3, (2002); Cerrah A.O., Simsek D., Soylu A.R., Nunome H., Ertan H., Developmental differences of kinematic and muscular activation patterns in instep soccer kick, Sports Biomech, pp. 1-16, (2020); Cobanoglu H.O., Analysis of goal scored on Russia world cup 2018, J Educ Training Stud, 7, 2, pp. 184-191, (2019); Cockcroft J., Van Den Heever D., A descriptive study of step alignment and foot positioning relative to the tee by professional rugby union goal-kickers, J Sports Sci, 34, 4, pp. 321-329, (2016); de Leva P., Adjustments to Zatsiorsky-Seluyanov’s segment inertia parameters, J Biomech, 29, 9, pp. 1223-1230, (1996); DiCarlo J.J., Zoccolan D., Rust N.C., How does the brain solve visual object recognition?, Neuron, 73, 3, pp. 415-434, (2012); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Biomechanical differences in soccer kicking with the preferred and the non-preferred leg, J Sports Sci, 20, 4, pp. 293-299, (2002); Harrison A.J., Mannering A., A biomechanical analysis of the instep kick in soccer with preferred and non-preferred foot, In: Proceedings of the 24th International Symposium on Biomechanics in Sports, (2006); Hennig E.M., Althoff K., Hoemme A., Soccer footwear and ball kicking accuracy, Footwear Science, 1, sup1, pp. 85-87, (2009); Inoue S.I., Ito T., Sueyoshi Y., O'Donoghue R.K., Mochinaga M., The effect of lifting the rotational axis on swing speed of the instep kick in soccer, In: Proceedings of the 18th International Symposium on Biomechanics in Sports, (2000); Inoue K., Nunome H., Sterzing T., Shinkai H., Ikegami Y., Dynamics of the support leg in soccer instep kicking, J Sports Sci, 32, 11, pp. 1023-1032, (2014); Isokawa M., A biomechanical analysis of the instep kick motion in soccer, Science and football, pp. 449-455, (1988); Kapidzic A., Huremovic T., Biberovic A., Kinematic analysis of the instep kick in youth soccer players, J Hum Kinet, 42, 1, pp. 81-90, (2014); Katis A., Kellis E., Three-dimensional kinematics and ground reaction forces during the instep and outstep soccer kicks in pubertal players, J Sports Sci, 28, 11, pp. 1233-1241, (2010); Katis A., Kellis E., Lees A., Age and gender differences in kinematics of powerful instep kicks in soccer, Sports Biomech, 14, 3, pp. 287-299, (2015); Kellis E., Katis A., Biomechanical characteristics and determinants of instep soccer kick, J Sports Sci Med, 6, 2, (2007); Kellis E., Katis A., Gissis I., Knee biomechanics of the support leg in soccer kicks from three angles of approach, Med Sci Sports Exerc, 36, 6, pp. 1017-1028, (2004); Lees A., Asai T., Andersen T.B., Nunome H., Sterzing T., The biomechanics of kicking in soccer: a review, J Sports Sci, 28, 8, pp. 805-817, (2010); Lees A., Nolan L., The biomechanics of soccer: a review, J Sports Sci, 16, 3, pp. 211-234, (1998); Lees A., Steward I., Rahnama N., Barton G., Lower limb function in the maximal instep kick in soccer, Contemporary sport, leisure and ergonomics, pp. 149-159, (2009); Li Y., Alexander M.J., Glazebrook C.M., Leiter J., Prediction of kick direction from kinematics during the soccer penalty kick, Int J Kinesiol Sports Sci, 3, 4, pp. 1-7, (2015); McLean B., Tumilty D., Left-right asymmetry in two types of soccer kick, Br J Sports Med, 27, 4, pp. 260-262, (1993); Mulazimoglu O., Afyon Y.A., Hazar K., Yanar S., Dalli M., Isikdemir E., The analysis of the goals scored in round of 16 in FIFA 2014 world cup, J Educ Sociol, 6, 2, (2015); Njororai W., Analysis of goals scored in the 2010 world cup soccer tournament held in South Africa, J Phys Educ Sport, 13, 1, (2013); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med Sci Sports Exerc, 34, 12, pp. 2028-2036, (2002); Nunome H., Ikegami Y., The effect of hip linear motion on lower leg angular velocity during soccer instep kicking, In: Proceedings of the 23rd Symposium on Biomechanics in Sports, (2005); Nunome H., Lake M., Georgakis A., Stergioulas L.K., Impact phase kinematics of instep kicking in soccer, J Sports Sci, 24, 1, pp. 11-22, (2006); Okholm Kryger K., Mitchell S., Forrester S., Assessment of the accuracy of different systems for measuring football velocity and spin rate in the field, Proc Inst Mech Eng Part P: J Sports Eng Technol, 233, 2, pp. 324-330, (2019); Orloff H., Sumida B., Chow J., Habibi L., Fujino A., Kramer B., Ground reaction forces and kinematics of plant leg position during instep kicking in male and female collegiate soccer players, Sports Biomech, 7, 2, pp. 238-247, (2008); Rabello R., Bertozzi F., Galli M., Zago M., Sforza C., Lower limbs muscle activation during instep kick in soccer: effects of dominance and ball condition, Sci Med Football, 6, 1, pp. 40-48, (2022); Savelsbergh G.J., Williams A.M., Kamp J.V.D., Ward P., Visual search, anticipation and expertise in soccer goalkeepers, J Sports Sci, 20, 3, pp. 279-287, (2002); Scurr J., Hall B., The effects of approach angle on penalty kicking accuracy and kick kinematics with recreational soccer players, J Sports Sci Med, 8, 2, (2009); Sterzing T., Hennig E.M., The Influence of Soccer Shoes on Kicking Velocity in Full-Instep Kicks, Exercise and Sport Sciences Reviews, 36, 2, pp. 91-97, (2008); Sterzing T., Lange J.S., Wachtler T., Muller C., Milani T.L., Velocity and accuracy as performance criteria for three different soccer kicking techniques, In: Proceedings of the 27th International Society of Biomechanics in Sports Conference, (2009); Teixeira L.A., Kinematics of kicking as a function of different sources of constraint on accuracy, Percept Mot Skills, 88, 3, pp. 785-789, (1999)","K.B. Cheng; Institute of Physical Education, Health and Leisure Studies, National Cheng Kung University, Tainan, Taiwan; email: kybcheng@mail.ncku.edu.tw","","Taylor and Francis Ltd.","24733938","","","35300563","English","Sci. Med. Footb.","Article","Final","","Scopus","2-s2.0-85127132637" "Liu L.; Wang W.; Luo Y.","Liu, Luoxi (57210574477); Wang, Wenjun (57211096203); Luo, Yaping (55801053100)","57210574477; 57211096203; 55801053100","Foreign object held in recessed areas of shoe outsole as an acquired characteristic in footwear examination: A preliminary study","2019","Forensic Science International","304","","109949","","","","0","10.1016/j.forsciint.2019.109949","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85072640220&doi=10.1016%2fj.forsciint.2019.109949&partnerID=40&md5=d381b2a874deb1484d97c01c630f50c2","School of Forensic Science, People's Public Security University of China, No. 1, Muxidi South Street, Xicheng District, Beijing, 100038, China; Graduate School, People's Public Security University of China, No. 1, Muxidi South Street, Xicheng District, Beijing, 100038, China","Liu L., School of Forensic Science, People's Public Security University of China, No. 1, Muxidi South Street, Xicheng District, Beijing, 100038, China; Wang W., School of Forensic Science, People's Public Security University of China, No. 1, Muxidi South Street, Xicheng District, Beijing, 100038, China; Luo Y., Graduate School, People's Public Security University of China, No. 1, Muxidi South Street, Xicheng District, Beijing, 100038, China","Foreign objects as acquired characteristics in footwear examination have a great value in declaring a proposed identification. However, they do not have the same significance in excluding any footwear because they may disappear for many reasons as time passes by. The aim of this study was to establish the value of foreign object held (FOH) in the recessed area of the outsole, based on its reproducibility and specificity. To investigate the reproducibility of FOH, we asked 37 volunteers to wear Chinese police uniform shoes and to walk and run on both PVC soft glass and blacktop. Before each progression, there was an exposure of shoe outsoles on a soccer field full of rubber and quartz particles to allow access of FOHs to the shoe outsole. The numbers of FOHs in each shoe outsole were recorded both at the beginning and end of each progression. The variation rate of FOH number in each outsole was then calculated. To evaluate the specificity of FOH, we first invited 160 volunteers to wear their uniform shoes and to walk and jump on the soccer field. FOHs in two recessed lines of their outsoles were observed. Next, 25 of the subjects were invited to record their plantar pressure distribution using Novel's EMED system. We also collected 113 shoes with FOHs in their outsoles, from all over China. The FOHs in different sub-areas of each outsole were observed and counted, followed by the calculation of their density in each sub-area. FOH reproducibility analysis showed that there were more losses of FOH after running than walking on both substrates; walking on blacktop tended to lead more losses of FOH than on soft glass. Thus, both the substrate condition and progression pattern affect the reproducibility of FOH. FOH specificity analysis showed that the FOH tended to be concentrated in the middle of the recessed line at heel part and in the middle and lateral half of the recessed line at arch part. The pressures where FOHs presented tended to be concentrated in 61.2%–88.2% (interquartile range) of corresponding maximum pressures. At the same time, FOHs tended to be found in areas with moderate wear and rarely in areas that seldom contacted the ground. All these results indicated that FOHs were not acquired randomly. Rather, they were related to the distribution of pressure. © 2019","Acquired characteristic; Footwear examination; Foreign object held; Reproducibility; Specificity","Female; Forensic Sciences; Humans; Male; Pressure; Reproducibility of Results; Shoes; Statistics as Topic; Walking; Article; biomechanics; equipment design; foreign object held; forensic medicine; human; mathematical computing; priority journal; reproducibility; running; walking; female; forensic science; male; pressure; procedures; shoe; statistics","National Research Council, Strengthening Forensic Science in the United States: A Path Forward, (2009); Executive Office of the President President's Council of Advisors on Science and Technology, Forensic Science in Criminal Courts: Ensuring Scientific Validity of Feature-Comparison Methods, (2016); Toso B., Evaluation of Accidental Characteristics (Cut) on the Shoe Soles, As a Function of Time and Usage, (1997); Reymond J., Study of Acquired Characteristics on Two General Patterns of Soles, (2010); Damary N.K., Et al., Dependence among randomly acquired characteristics on shoeprints and their features, Forensic Sci. Int., 283, pp. 173-179, (2018); Tart M.S., Downey A.J., Goodyear J.G., Adams J., The Appearance and Duration of Feathering as a Feature of Wear. FSS Report No. RR 786, pp. 1-11, (1996); Davis R.J., Keeley A., Feathering of footwear, Sci. Justice, 40, 4, pp. 273-276, (2000); Fruchtenicht T.L., Herzig W.P., Blackledge R.D., The discrimination of two-dimensional military boot impressions based on wear patterns, Sci. Justice, 42, 2, pp. 97-104, (2002); Stoney D.A., Bowen A.M., Stoney P.L., Loss and replacement of small particles on the contact surfaces of footwear during successive exposures, Forensic Sci. Int., 269, pp. 78-88, (2016); Stoney D.A., Bowen A.M., Ausdemore M., Stoney P.L., Neumann C., Stoney F.P., Rates of loss and replacement of very small particles (VSP) on the contact surfaces of footwear during successive exposures, Forensic Sci. Int., 296, pp. 39-47, (2019); Roux C., Kirk R., Benson S., Haren T.V., Petterd C.I., Glass particles in footwear of members of the public in south-eastern Australia–a survey, Forensic Sci. Int., 116, 2, pp. 149-156, (2001); Davis R.J., DeHaan J.D., A survey of men's footwear, J. Forensic Sci. Soc., 17, 4, pp. 271-285, (1977); Bodziak W.J., Forensic Footwear Evidence, (2015); Shi L., Footprint, (2007); Inman K., Rudin N., Principles and Practice of Criminalistics: The Profession of Forensic Science, (2001); Zhang Q., Zhou X., Ni Z., Distribution of foot pressure of healthy people: influence factors and current studies, Chin. J. Rehabil., 26, 6, pp. 443-445, (2011); Segal A.D., Rohr E.S., Orendurff M.S., Sangeorzan B., The effect of walking speed on peak plantar pressure, Foot Ankle Int./Am. Orthopaedic Foot Ankle Soc. Swiss Foot Ankle Soc., 25, 12, pp. 926-933, (2004); Orendurff M.S., Rohr E.S., Segal A.D., Medley J.W., Green J.R., Kadel N.J., Regional foot pressure during running, cutting, jumping, and landing, Am. J. Sports Med., 36, 3, pp. 566-571, (2007); Fang T., Analysis of Shoe Outsole Pressure for Design of Sports Shoes (Master's Degree), (2009)","Y. Luo; Graduate School, People's Public Security University of China, Beijing, No. 1, Muxidi South Street, Xicheng District, 100038, China; email: lyp6698@163.com","","Elsevier Ireland Ltd","03790738","","FSIND","31568950","English","Forensic Sci. Int.","Article","Final","","Scopus","2-s2.0-85072640220" "Kunugi S.; Koumura T.; Myotsuzono R.; Masunari A.; Yoshida N.; Miyakawa S.; Mukai N.","Kunugi, Shun (57125778100); Koumura, Takashi (57203856093); Myotsuzono, Ryota (57217166647); Masunari, Akihiko (56262106000); Yoshida, Naruto (57125387000); Miyakawa, Shumpei (15769772200); Mukai, Naoki (7005409455)","57125778100; 57203856093; 57217166647; 56262106000; 57125387000; 15769772200; 7005409455","Male collegiate soccer athletes with severe ankle laxity display increased knee abduction during side-cutting tasks compared to those with only perceived ankle instability","2021","Research in Sports Medicine","29","6","","547","556","9","0","10.1080/15438627.2021.1917407","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104809675&doi=10.1080%2f15438627.2021.1917407&partnerID=40&md5=55e7a58eb1fc98b9c4bd41a6031bf21e","Faculty of Liberal Arts and Sciences, Chukyo University, Nagoya-shi, Aichi, Japan; Department of Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan; Faculty of Sports Science, Kyushu Kyoritsu University, Fukuoka, Japan; Tokyo Verdy, Inc, Inagi-shi, Tokyo, Japan; Faculty of Health Care, Department of Acupuncture and Moxibusion, Teikyo Heisei University, Toshima-ku, Tokyo, Japan; Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan; Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan","Kunugi S., Faculty of Liberal Arts and Sciences, Chukyo University, Nagoya-shi, Aichi, Japan; Koumura T., Department of Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan; Myotsuzono R., Faculty of Sports Science, Kyushu Kyoritsu University, Fukuoka, Japan; Masunari A., Tokyo Verdy, Inc, Inagi-shi, Tokyo, Japan; Yoshida N., Faculty of Health Care, Department of Acupuncture and Moxibusion, Teikyo Heisei University, Toshima-ku, Tokyo, Japan; Miyakawa S., Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan; Mukai N., Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan","This study aimed to examine lower limb kinematics during a side-cutting task in male collegiate soccer athletes with severe ankle laxity. Forty-seven participants with a history of ankle sprains and perceived ankle instability were categorized into non-laxity (n = 17), laxity (n = 19), and severe laxity (n = 11) groups using stress radiography tests. Three-dimensional kinematic data during the stance phase of a 45° side-cutting task were analysed. The frontal plane kinematics of the knee significantly differed between the three groups (p < 0.05). The severe laxity group exhibited a greater abduction angle than the non-laxity group (p < 0.05). The horizontal and sagittal plane kinematics of the rearfoot differed between the three groups during the end of the stance phase (p < 0.05). Our data suggest that collegiate soccer athletes with both perceived ankle instability and severe ankle laxity exhibit greater knee abduction movement during a 45° side-cutting task compared to those with only perceived ankle instability. © 2021 Informa UK Limited, trading as Taylor & Francis Group.","Ankle laxity; ankle sprains; joint instability; kinematics; lateral ligament","Adolescent; Adult; Ankle Injuries; Biomechanical Phenomena; Case-Control Studies; Cross-Sectional Studies; Humans; Joint Instability; Knee Joint; Male; Movement; Soccer; Young Adult; adolescent; adult; ankle injury; biomechanics; case control study; comparative study; cross-sectional study; human; joint instability; knee; male; movement (physiology); pathophysiology; physiology; soccer; young adult","Benoit D., Ramsey D., Lamontagne M., Xu L., Wretenberg P., Effect of skin movement artefact on knee kinematics during gait and cutting motions measured in vivo, Gait & Posture, 24, 2, pp. 152-164, (2006); Bisciotti G.N., Chamari K., Cena E., Bisciotti A., Corsini A., Volpi P., Anterior cruciate ligament injury risk factors in football, The Journal of Sports Medicine and Physical Fitness, 59, 10, pp. 1724-1738, (2019); Brown C.N., Ko J., Rosen A.B., Hsieh K., Individuals with both perceived ankle instability and mechanical laxity demonstrate dynamic postural stability deficits, Clinical Biomechanics, 30, 10, pp. 1170-1174, (2015); Delahunt E., Monaghan K., Caulfield B., Changes in lower limb kinematics, kinetics, and muscle activity in subjects with functional instability of the ankle joint during a single leg drop jump, Journal of Orthopaedic Research, 24, 10, pp. 1991-2000, (2006); Flieg N.G., Gatti C.J., Doro L.C., Langenderfer J.E., Carpenter J.E., Hughes R.E., Individuals with mechanical ankle instability exhibit different motion patterns than those with functional ankle instability and ankle sprain copers, Clinical Biomechanics, 23, 5, pp. 554-561, (2008); Gribble P.A., Delahunt E., Bleakley C., Caulfield B., Docherty C., Fourchet F., Fourchet F., Hertel J., Hiller C.E., Kaminski T.W., McKeon P.O., Refshauge K.M., Van Der Wees P., Vicenzino W., Wikstrom E., Selection criteria for patients with chronic ankle instability in controlled research: A position statement of the International Ankle Consortium, Journal of Athletic Training, 49, 1, pp. 121-127, (2014); Gulbrandsen M., Hartigan D.E., Patel K.A., Makovicka J.L., Tummala S.V., Chhabra A., Ten-year epidemiology of ankle injuries in men’s and women’s collegiate soccer players, Journal of Athletic Training, 54, 8, pp. 881-888, (2019); Hertel J., Corbett R.O., An updated model of chronic ankle instability, Journal of Athletic Training, 54, 6, pp. 572-588, (2019); Hiller C.E., Kilbreath S.L., Refshauge K.M., Chronic ankle instability: Evolution of the model, Journal of Athletic Training, 46, 2, pp. 133-141, (2011); Hiller C.E., Refshauge K.M., Bundy A.C., Herbert R.D., Kilbreath S.L., The Cumberland Ankle Instability Tool: A report of validity and reliability testing, Archives of Physical Medicine and Rehabilitation, 87, 9, pp. 1235-1241, (2006); Hintermann B., Boss A., Schafer D., Arthroscopic findings in patients with chronic ankle instability, The American Journal of Sports Medicine, 30, 3, pp. 402-409, (2002); Hopkins J.T., Son S.J., Kim H., Page G., Seeley M.K., Characterization of multiple movement strategies in participants with chronic ankle instability, Journal of Athletic Training, 54, 6, pp. 698-707, (2019); Hunt K.J., Hurwit D., Robell K., Gatewood C., Botser I.B., Matheson G., Incidence and epidemiology of foot and ankle injuries in elite collegiate athletes, The American Journal of Sports Medicine, 45, 2, pp. 426-433, (2017); Karlsson J., Lansinger O., Lateral instability of the ankle joint, Clinical Orthopaedics and Related Research, 276, pp. 253-261, (1992); Kay M.C., Register-Mihalik J.K., Gray A.D., Djoko A., Dompier T.P., Kerr Z.Y., The epidemiology of severe injuries sustained by national collegiate athletic association student-athletes, 2009–2010 through 2014–2015, Journal of Athletic Training, 52, 2, pp. 117-128, (2017); Kim H., Son S.J., Seeley M.K., Hopkins J.T., Altered movement biomechanics in chronic ankle instability, coper, and control groups: Energy absorption and distribution implications, Journal of Athletic Training, 54, 6, pp. 708-717, (2019); Konradsen L., Bech L., Ehrenbjerg M., Nickelsen T., Seven years follow-up after ankle inversion trauma, Scandinavian Journal of Medicine & Science in Sports, 12, 3, pp. 129-135, (2002); Kunugi S., Koumura T., Myotsuzono R., Masunari A., Yoshida N., Miyakawa S., Mukai N., Ankle laxity affects ankle kinematics during a side-cutting task in male collegiate soccer athletes without perceived ankle instability, Physical Therapy in Sport, 46, pp. 89-96, (2020); Kunugi S., Masunari A., Noh B., Mori T., Yoshida N., Miyakawa S., Cross-cultural adaptation, reliability, and validity of the Japanese version of the Cumberland ankle instability tool, Disability and Rehabilitation, 39, 1, pp. 50-58, (2017); Leardini A., Benedetti M.G., Berti L., Bettinelli D., Nativo R., Giannini S., Rear-foot, mid-foot and fore-foot motion during the stance phase of gait, Gait & Posture, 25, 3, pp. 453-462, (2007); Lohrer H., Nauck T., Arentz S., Scholl J., Observer reliability in ankle and calcaneocuboid stress radiography, The American Journal of Sports Medicine, 36, 6, pp. 1143-1149, (2008); Monfort S.M., Pradarelli J.J., Grooms D.R., Hutchison K.A., Onate J.A., Chaudhari A.M., Visual-spatial memory deficits are related to increased knee valgus angle during a sport-specific sidestep cut, The American Journal of Sports Medicine, 47, 6, pp. 1488-1495, (2019); Pataky T.C., Generalized n-dimensional biomechanical field analysis using statistical parametric mapping, Journal of Biomechanics, 43, 10, pp. 1976-1982, (2010); Sankey S.P., Azidin R.M.F.R., Robinson M.A., Malfait B., Deschamps K., Verschueren S., Staes F., Vanrenterghem J., How reliable are knee kinematics and kinetics during side-cutting manoeuvres?, Gait & Posture, 41, 4, pp. 905-911, (2015); Sigward S.M., Powers C.M., The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting, Clinical Biomechanics (Bristol, Avon), 21, 1, pp. 41-48, (2006); Sjolander P., Johansson H., Djupsjobacka M., Spinal and supraspinal effects of activity in ligament afferents, Journal of Electromyography and Kinesiology, 12, 3, pp. 167-176, (2002); Son S.J., Kim H., Seeley M.K., Hopkins J.T., Movement strategies among groups of chronic ankle instability, coper, and control, Medicine and Science in Sports and Exercise, 49, 8, (2017); Van Rijn R.M., Van Os A.G., Bernsen R.M., Luijsterburg P.A., Koes B.W., Bierma-Zeinstra S.M., What is the clinical course of acute ankle sprains? A systematic literature review, The American Journal of Medicine, 121, 4, pp. 324-331, (2008); Walden M., Krosshaug T., Bjorneboe J., Andersen T.E., Faul O., Hagglund M., Three distinct mechanisms predominate in non-contact anterior cruciate ligament injuries in male professional football players: A systematics video analysis of 39 cases, British Journal of Sports Medicine, 49, 22, pp. 1452-1460, (2015); Yamamoto H., Yagishita K., Ogiuchi T., Sakai H., Shinomiya K., Muneta T., Subtalar instability following lateral ligament injuries of the ankle, Injury, 29, 4, pp. 265-268, (1998)","S. Kunugi; Faculty of Liberal Arts and Sciences, Chukyo University, Aichi, 101-2 Yagoto Honmachi, Showa-ku, Nagoya-shi, 466-8666, Japan; email: shun-kunugi@hotmail.com","","Routledge","15438627","","RSMEC","33879004","English","Res. Sports Med.","Article","Final","","Scopus","2-s2.0-85104809675" "Camacaro M.; Colina A.; Zissu M.","Camacaro, Marelvy (57240102100); Colina, Alberto (59103369800); Zissu, Mihai (57239459700)","57240102100; 59103369800; 57239459700","Analysis of kinematic variables in soccer kicking technique from biomechanical efficiency criteria; [Análisis de las variables cinemáticas en la técnica del pateo en el fútbol a partir de criterios de eficiencia biomecánicos]","2021","Sport TK","10","2","","25","45","20","0","10.6018/SPORTK.429211","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85113916945&doi=10.6018%2fSPORTK.429211&partnerID=40&md5=978de6d9351ca57d957f8314446e0e35","UPEL-IPC, Venezuela; Laboratorio Nacional de Biomecánica Del Instituto Nacional de Deportes, Venezuela; La Actividad Física, Deporte y Recreación (Convenio Universidad de León-UPEL), Spain","Camacaro M., UPEL-IPC, Venezuela; Colina A., UPEL-IPC, Venezuela, Laboratorio Nacional de Biomecánica Del Instituto Nacional de Deportes, Venezuela; Zissu M., UPEL-IPC, Venezuela, Laboratorio Nacional de Biomecánica Del Instituto Nacional de Deportes, Venezuela, La Actividad Física, Deporte y Recreación (Convenio Universidad de León-UPEL), Spain","The present investigation was carried out with the objective of analyzing the kinematic variables that are manifested in the kicking technique in soccer based on biomechanical efficiency criteria. It was a descriptive level investigation, with a field design, based on a case study with a 15-year-old athlete. The three-dimensional (3D) videographic method was used with the approaches: quantitative (""Human v 5.0""program) and qualitative (Likert scale). Kinematic variables were quantified by pre and posttest. Efficiency criteria were established to optimize biomechanical variables in the phases: Preparatory and Kicking. Thus, the adolescent's training was oriented according to the strengths and weaknesses identified from the biomechanical perspective, which allowed optimizing the technique of the dominant and non-dominant lower limbs. Among other results, the increase in synchronization and consequent improvement in the temporal pattern of movement stood out, which facilitated the coordination of partial impulse, and therefore the transfer of energy from the body to the ball, positively influencing the resulting speed, trajectory and precision of the ball which increased the frequency of the goal, a fact that affected the performance and profile of the young woman, standing out in the lateral position with an efficient handling of the ball by both profile. © Copyright 2021: Publication Service of the University of Murcia, Murcia, Spain.","Biomechanics; Efficiency Criteria; Kicking; Kinematics; Soccer; Technique","","Andersen T, Dorge H., The Influence of Speed of Approach and Accuracy Constraint on the Maximal Speed of the Ball in Soccer Kicking, Scandinavian Journal of Medicine & Science in Sports, 21, 1, pp. 79-84, (2011); Colina A., Orientaciones epistémicas para la optimización de las destrezas motoras básicas desde la perspectiva biomecánica en educación primaria, (2017); Duck T., HU-M-AN (Movement Analysis): Handbook Versión 5.0, (2005); Echevarria M, Galvis J., Exploración Biomecánica de la Carrera en Fútbolistas Profesionales Colombianos, Revista Iberoamericana de ciencias de la actividad física y el deporte, 9, 1, pp. 53-63, (2020); Grosser M., Neumaier A., Entrenamiento de la técnica, (1986); Gutierrez M., Biomecánicos Deportiva, (1994); Li Y., Alexander M., Glazebrook C., Leiter J., Prediction of Kick Direction from Kinematics during the Soccer Penalty Kick, International Journal of Kinesiology & Sports Science, 3, 4, pp. 1-7, (2015); Gomez L., Jaramillo A, Ruiz M., Velasquez S., Paramo C., Silva G. Y., Alexander M., Glazebrook C., Leiter J., Human motion capture and analysis systems: a systematic review, Prospective, 16, 2, pp. 24-34, (2015); Nitsch J., Neumaier A., Horst de M., Mester J., Entrenamiento de la técnica. Editorial Paidotribo, (2017); Padron L., Análisis correlativo de las variables que se manifiestan en los apoyos (análisis podológico) del paso de carrera en la primera y segunda recta en los 400 metros planos con la velocidad, (2016); Rada A., Kuvacic G., De Giorgio A., Sellami M., Ardigo L., Bragazzi N., Padulo J., The ball kicking speed: A new, efficient performance indicator in youth soccer, Plos One, 14, 5, (2019); Sanabria Y., Agudelo C., Análisis cinemático y dinámico en el pateo en el fútbol sala, Revista Actividad Física y Desarrollo Humano, 7, 1, pp. 1-9, (2015); Zissu M., Biomecánica del arranque en el levantamiento de pesas, (2009); Zissu M., Modelo Biomecánico del Pateo del Balón desde el Área Grande, (2017)","M. Camacaro; UPEL-IPC, Venezuela; email: marelvycamacaro20@gmail.com","","Universidad de Murcia","22544070","","","","Spanish","Sport TK","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85113916945" "Elvidge T.; Brown S.; Valenzuela K.; Sorochan J.; Weinhandl J.T.; Zhang S.","Elvidge, Thomas (57718450000); Brown, Sean (57200538084); Valenzuela, Kevin (56495188500); Sorochan, John (8551356900); Weinhandl, Joshua T. (36017907300); Zhang, Songning (15125208500)","57718450000; 57200538084; 56495188500; 8551356900; 36017907300; 15125208500","Knee and ankle biomechanics in 90° side cutting on synthetic turf with shock pad","2022","Footwear Science","14","3","","173","183","10","0","10.1080/19424280.2022.2077842","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130994122&doi=10.1080%2f19424280.2022.2077842&partnerID=40&md5=9bd499a532a5fb81100bb4f628aed1e9","Biomechanics/Sports Medicine Lab, Department of Kinesiology, Recreation and Sport Studies, The University of Tennessee, Knoxville, TN, United States; Department of Kinesiology, California State University Long Beach, Long Beach, CA, United States; Department of Plant Sciences, The University of Tennessee, Knoxville, TN, United States","Elvidge T., Biomechanics/Sports Medicine Lab, Department of Kinesiology, Recreation and Sport Studies, The University of Tennessee, Knoxville, TN, United States; Brown S., Biomechanics/Sports Medicine Lab, Department of Kinesiology, Recreation and Sport Studies, The University of Tennessee, Knoxville, TN, United States; Valenzuela K., Department of Kinesiology, California State University Long Beach, Long Beach, CA, United States; Sorochan J., Department of Plant Sciences, The University of Tennessee, Knoxville, TN, United States; Weinhandl J.T., Biomechanics/Sports Medicine Lab, Department of Kinesiology, Recreation and Sport Studies, The University of Tennessee, Knoxville, TN, United States; Zhang S., Biomechanics/Sports Medicine Lab, Department of Kinesiology, Recreation and Sport Studies, The University of Tennessee, Knoxville, TN, United States","The purpose of this study was to examine differences in knee and ankle biomechanics on synthetic turf with and without a shock pad in two approach velocities during a 90° cutting movement. Twelve recreational male American football or soccer players performed five trials of 90° side cutting in each of four conditions: turf only and turf with shock pad at approach velocity of 3.0 and 4.0 m/s. A two-way (surface × approach velocity) ANOVA was used to analyse selected variables. Knee and ankle variables were generally similar across surface conditions. However, peak knee frontal-plane loading eccentric power was greater (p = 0.013) while peak knee frontal-plane push-off eccentric power was reduced on the shock pad (p = 0.020). A surface × approach velocity interaction was detected for peak knee sagittal-plane eccentric power (p = 0.018), and a post-hoc analysis found a significant increase of peak knee sagittal-plane eccentric power at a faster approach speed on the turf only condition compared to the turf with the shock pad. There were increases in the knee extension moments (p = 0.004), peak push-off medial ground reaction force (GRF, p = 0.025), peak ankle eversion moment (p < 0.001), and ankle inversion ROM (p = 0.001) as approach velocity increased while peak push-off vertical GRF decreased (p = 0.011). The effects of the inclusion of a shock pad on lower extremity loading during a 90° cutting movement are limited. The results indicate that the turf with the shock pad absorbs more kinetic energy as speed increases than the turf alone. © 2022 Informa UK Limited, trading as Taylor & Francis Group.","Artificial turf; biomechanics; cutting; injury; joint moment; shock pad","Biomechanics; Kinetic energy; Kinetics; Sports; Velocity; Ankle biomechanics; Approach velocities; Artificial turfs; Injury; Joint moment; Knee biomechanics; Power; Push offs; Shock pad; Side-cutting; Biophysics","(2016); Bennett H.J., Brock E., Brosnan J.T., Sorochan J.C., Zhang S., Effects of two football stud types on knee and ankle kinetics of single-leg land-cut and 180 degrees cut movements on infilled synthetic turf, Journal of Applied Biomechanics, 31, 5, pp. 309-317, (2015); Bjorneboe J., Bahr R., Andersen T.E., Risk of injury on third-generation artificial turf in Norwegian professional football, British Journal of Sports Medicine, 44, 11, pp. 794-798, (2010); Brock E., Zhang S., Milner C., Liu X., Brosnan J.T., Sorochan J.C., Effects of two football stud configurations on biomechanical characteristics of single-leg landing and cutting movements on infilled synthetic turf, Sports Biomechanics, 13, 4, pp. 362-379, (2014); Brughelli M., Cronin J., Chaouachi A., Effects of running velocity on running kinetics and kinematics, Journal of Strength and Conditioning Research, 25, 4, pp. 933-939, (2011); Cortes N., Onate J., Van Lunen B., Pivot task increases knee frontal plane loading compared with sidestep and drop-jump, Journal of Sports Sciences, 29, 1, pp. 83-92, (2011); Ekstrand J., Timpka T., Hagglund M., Risk of injury in elite football played on artificial turf versus natural grass: A prospective two-cohort study, British Journal of Sports Medicine, 40, 12, pp. 975-980, (2006); Faul F., Erdfelder E., Lang A.G., Buchner A., G*Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences, Behavior Research Methods, 39, 2, pp. 175-191, (2007); Ford K.R., Manson N.A., Evans B.J., Myer G.D., Gwin R.C., Heidt R.S., Hewett T.E., Comparison of in-shoe foot loading patterns on natural grass and synthetic turf, Journal of Science and Medicine in Sport, 9, 6, pp. 433-440, (2006); Fuller C.W., Dick R.W., Corlette J., Schmalz R., Comparison of the incidence, nature and cause of injuries sustained on grass and new generation artificial turf by male and female football players. Part 1: Match injuries, British Journal of Sports Medicine, 41, pp. I20-I26, (2007); Gould H.P., Lostetter S.J., Samuelson E.R., Guyton G.P., Lower extremity injury rates on artificial turf and natural grass playing surfaces: A systematic review, Foot & Ankle Orthopaedics, 7, 1, (2022); Hershman E.B., Anderson R., Bergfeld J.A., Bradley J.P., Coughlin M.J., Johnson R.J., Spindler K.P., Wojtys E., Powell J.W., Collins J.T., Casolaro M.A., Mayer T., Pellman E., Tessendorf W., Tucker A., An analysis of specific lower extremity injury rates on grass and FieldTurf playing surfaces in National Football League Games: 2000-2009 seasons, The American Journal of Sports Medicine, 40, 10, pp. 2200-2205, (2012); Landry S.C., McKean K.A., Hubley-Kozey C.L., Stanish W.D., Deluzio K.J., Neuromuscular and lower limb biomechanical differences exist between male and female elite adolescent soccer players during an unanticipated side-cut maneuver, The American Journal of Sports Medicine, 35, 11, pp. 1888-1900, (2007); Lanzetti R.M., Ciompi A., Lupariello D., Guzzini M., De Carli A., Ferretti A., Safety of third-generation artificial turf in male elite professional soccer players in Italian major league, Scandinavian Journal of Medicine & Science in Sports, 27, 4, pp. 435-439, (2017); Loughran G.J., Vulpis C.T., Murphy J.P., Weiner D.A., Svoboda S.J., Hinton R.Y., Milzman D.P., Incidence of knee injuries on artificial turf versus natural grass in national collegiate athletic association American Football: 2004-2005 through 2013-2014 seasons, The American Journal of Sports Medicine, 47, 6, pp. 1294-1301, (2019); Mack C.D., Hershman E.B., Anderson R.B., Coughlin M.J., McNitt A.S., Sendor R.R., Kent R.W., Higher rates of lower extremity injury on synthetic turf compared with natural turf among national football league athletes: Epidemiologic confirmation of a biomechanical hypothesis, The American Journal of Sports Medicine, 47, 1, pp. 189-196, (2019); McGhie D., Ettema G., Biomechanical analysis of surface-athlete impacts on third-generation artificial turf, The American Journal of Sports Medicine, 41, 1, pp. 177-185, (2013); Meyers M.C., Surface-related high school football game injuries on pad and no-pad fields, The American Journal of Sports Medicine, 49, 9, pp. 2489-2497, (2021); Ranson C., George J., Rafferty J., Miles J., Moore I., Playing surface and UK professional rugby union injury risk, Journal of Sports Sciences, 36, 21, pp. 2393-2398, (2018); Shorten M., Himmelsbach J., Shock attenuation of sports surfaces, The engineering of sport., 4, pp. 152-159), (2002); Sigward S.M., Powers C.M., Loading characteristics of females exhibiting excessive valgus moments during cutting, Clin Biomech, 22, 7, pp. 827-833, (2007); (2020); Stefanyshyn D.J., Lee J.-S., Park S.-K., The influence of soccer cleat design on resultant joint moments, Footwear Science, 2, 1, pp. 13-19, (2010); Stiles V., Dixon S., Biomechanical response to systematic changes in impact interface cushioning properties while performing a tennis-specific movement, Journal of Sports Sciences, 25, 11, pp. 1229-1239, (2007); Stiles V.H., Dixon S.J., The influence of different playing surfaces on the biomechanics of a tennis running forehand foot plant, Journal of Applied Biomechanics, 22, 1, pp. 14-24, (2006); Vanrenterghem J., Venables E., Pataky T., Robinson M.A., The effect of running speed on knee mechanical loading in females during side cutting, Journal of Biomechanics, 45, 14, pp. 2444-2449, (2012); Wang X., Fleming P.R., Forrester S., Advanced measurement of sports surface system behaviour under player loading, Procedia Engineering, 72, pp. 865-870, (2014)","S. Zhang; Biomechanics/Sports Medicine Lab, Department of Kinesiology, Recreation and Sport Studies, The University of Tennessee, Knoxville, 1914 Andy Holt Ave, 37996, United States; email: szhang@utk.edu","","Taylor and Francis Ltd.","19424280","","","","English","Footwear Sci.","Article","Final","","Scopus","2-s2.0-85130994122" "Ali M.F.M.; Deros B.M.; Ismail A.R.","Ali, Mohd Firdaus Mahamad (23109979400); Deros, Baba Md. (14044878900); Ismail, Ahmad Rasdan (24502854700)","23109979400; 14044878900; 24502854700","Biomechanics analysis for dominant leg during instep kicking","2012","Jurnal Teknologi (Sciences and Engineering)","59","SUPPL.2","","37","40","3","0","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84872726560&partnerID=40&md5=0cd88bb7738efd6c6b3004e2978bcfe0","Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia; Faculty of Mechanical Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia","Ali M.F.M., Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia; Deros B.M., Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia; Ismail A.R., Faculty of Mechanical Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia","This paper presents the 3D biomechanics analysis on a soccer player during performing instep kick. This study was conducted to investigate the significant correlation within variables, such as: approach angle, distance of supporting leg from the ball and ball internal pressure with respect to knee angular velocity of the ball on the kicking leg. Six subjects from different categories were selected to take part in this study. Subjects selected are using dominant right leg and free from any injury. Subjects were asked to perform one step instep kick according to the setting for the variables with different parameter. Data analysis was performed using 3 Dimensional ""Qualisys Track Manager"". Statistical analysis was conducted by using Microsoft Excel 2007 software. Taguchi statistical analysis method was used to determine the composition of L9 Orthogonal and larger noise to signal ratio (S/N). It was found the results of ANOVA analysis of P-values for all three parameters were lower than 0.05. It means that the approach angle, distance of supporting leg from the ball and the ball internal pressure have significant correlation with knee angular velocity. © 2012 Penerbit UTM Press.","Angle; Biomechanics; Distance; Pressure; Soccer","","Hatze H., The Meaning of Term Biomechanics, Journal of Biomechanics, 7, pp. 189-190, (1974); Luhtanen P., Kinematics and Kinetics of Maximal Instep Kicking In Junior Soccer Players, Science and football, pp. 441-448, (1988); Neilson P.J., Jones R., Dynamic Soccer Ball Performance Measurement, Science and Football V., pp. 21-27, (2005); Barfield W.R., The Biomechanics of Kicking in Soccer, Clinics in Sport Medicine, 17, 4, pp. 711-728, (1998); Kellis E., Katis A., Gissis I., Knee Biomechanics of the Support Leg in Soccer Kicks from Three Angles of Approach, Medicine and Science in Sports and Exercise, 36, pp. 1017-1028, (2004); Andersen B.T., Dorge H., Thomsen F., Collisions in Soccer Kicking, Sports Engineering, 2, pp. 121-125, (1999); Kellis E., Katis A., Biomechanical Characteristics and Determinants of Instep Soccer Kick, Journal of Sports Science and Medicine, 6, pp. 154-165, (2007); Hay J., The Biomechanics of Sports Techniques, (1993); McLean B.D., Tumilty D.M., Left-Right Asymmetry in Two Types of Soccer Kick, British Journal of Sports Medicine, 27, pp. 260-262, (1993); Phadke S.M., Quality Engineering Using Robust Design, (1989); Unal R., Dean E.B., Taguchi Approach to Design Optimization for Quality and Cost: An Overview, (1999); Lees A., Biomechanics Applied to Soccer Skills, Science and Soccer, pp. 123-134, (2002); Scurr J., Hall B., The Effects of Approach Angle on Penalty Kicking Accuracy and Kick Kinematics with Recreational Soccer Players, Journal of Sports Science and Medicine, 8, pp. 230-234, (2009); Isokawa M., Lees A., A Biomechanical Analysis of the Instep Kick Motion in Soccer, Science and Football, pp. 449-455, (1988); Barfield W.R., Kirkendall D., Yu B., Kinematic Instep Kicking Differences Between Elite Female and Male Soccer Players, Journal of Sports Science and Medicine, 3, pp. 72-79, (2002); Zebis M.K., Bencke J., Andersen L.L., Dossing S., Alkjaer T., Magnusson S.P., Et al., The Effects of Neuromuscular Training on Knee Joint Motor Control During Sidecutting In Female Elite Soccer And Handball Players, Clinical Journal of Sport Medicine, 18, pp. 329-337, (2008); Opavsky P., An Investigation of Linear and Angular Kinematics of the Leg During Two Types of Soccer Kick, Science and Football, pp. 456-459, (1988)","M. F. M. Ali; Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia; email: mohdfirdaus1982@gmail.com","","","21803722","","","","English","J. Teknol.","Article","Final","","Scopus","2-s2.0-84872726560" "Siegel S.D.; Mason J.; Hamacher D.; Rahlf A.L.; Zech A.","Siegel, Stanislav Dimitri (58496615100); Mason, Joel (57222759147); Hamacher, Daniel (35317494800); Rahlf, Anna Lina (56261900100); Zech, Astrid (23487588500)","58496615100; 57222759147; 35317494800; 56261900100; 23487588500","Asymmetries of foot strike patterns during running in high-level female and male soccer players","2023","BMC Sports Science, Medicine and Rehabilitation","15","1","86","","","","0","10.1186/s13102-023-00696-2","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85165294411&doi=10.1186%2fs13102-023-00696-2&partnerID=40&md5=cda79a8745427c2d578c378f7f1c83ff","Department of Human Movement Science and Exercise Physiology, Institute of Sport Science, Friedrich Schiller University Jena, Seidelstraße 20, Jena, 07749, Germany; Methods and Statistics in Sports, Institute of Sport Science, Friedrich Schiller University Jena, Seidelstraße 20, Jena, 07749, Germany; Department of Sports Science, Institute of Health, Nutrition and Sport Science, Europa-Universität Flensburg, Campusallee 2, Flensburg, 24943, Germany","Siegel S.D., Department of Human Movement Science and Exercise Physiology, Institute of Sport Science, Friedrich Schiller University Jena, Seidelstraße 20, Jena, 07749, Germany; Mason J., Department of Human Movement Science and Exercise Physiology, Institute of Sport Science, Friedrich Schiller University Jena, Seidelstraße 20, Jena, 07749, Germany; Hamacher D., Methods and Statistics in Sports, Institute of Sport Science, Friedrich Schiller University Jena, Seidelstraße 20, Jena, 07749, Germany; Rahlf A.L., Department of Sports Science, Institute of Health, Nutrition and Sport Science, Europa-Universität Flensburg, Campusallee 2, Flensburg, 24943, Germany; Zech A., Department of Human Movement Science and Exercise Physiology, Institute of Sport Science, Friedrich Schiller University Jena, Seidelstraße 20, Jena, 07749, Germany","Backround: Foot strike pattern (FSP) is defined by the way the foot makes initial ground contact and is influenced by intrinsic and extrinsic factors. This study investigated the effect of running speed on asymmetries of FSP. Methods: Seventeen female and nineteen male soccer players performed an incremental running test on an instrumented treadmill starting at 2.0 m/s until complete exhaustion. Force plate data were used to categorize foot strikes into rearfoot (RFS) and non-rearfoot strikes. Additionally, peak vertical ground reaction force (peakGRF) and stride time were calculated. The symmetry index (SI) was used to quantify lateral asymmetries between legs. Results: The SI indicated asymmetries of the rate of RFS (%RFS) of approximately 30% at slow running speed which decreased to 4.4% during faster running speed (p = 0.001). There were minor asymmetries in peakGRF and stride time at each running stage. Running speed influenced %RFS (p < 0.001), peakGRF (p < 0.001) and stride time (p < 0.001). Significant interaction effects between running speed and sex were shown for %RFS (p = 0.033), peakGRF (p < 0.001) and stride time (p = 0.041). Conclusion: FSP of soccer players are asymmetric at slower running speed, but symmetry increases with increasing speed. Future studies should consider that FSP are non-stationary and influenced by running speed but also differ between legs. © 2023, The Author(s).","Asymmetry; Foot strike pattern; Running; Sex; Soccer","adult; Article; biomechanics; blood sampling; body mass; comparative study; controlled study; cross-sectional study; female; foot strike pattern; ground reaction force; human; human experiment; kinematics; male; musculoskeletal system parameters; normal human; observational study; peak vertical ground reaction force; practice guideline; running; sex difference; soccer player; stride time; treadmill exercise; young adult","Hollander K., Liebl D., Meining S., Mattes K., Willwacher S., Zech A., Adaptation of running biomechanics to repeated barefoot running: Response, Am J Sports Medic, 48, pp. NP6-NP7, (2020); Novacheck T.F., The biomechanics of running, Gait Posture, 7, pp. 77-95, (1998); Ahn A., Brayton C., Bhatia T., Martin P., Muscle activity and kinematics of forefoot and rearfoot strike runners, J Sport Health Sci, 3, pp. 102-112, (2014); Knorz S., Kluge F., Gelse K., Schulz-Drost S., Hotfiel T., Lochmann M., Eskofier B., Krinner S., Three-dimensional biomechanical analysis of rearfoot and forefoot running, Orthop J Sports Med, 5, (2017); Valenzuela K.A., Lynn S.K., Mikelson L.R., Noffal G.J., Judelson D.A., Effect of acute alterations in foot strike patterns during running on sagittal plane lower limb kinematics and kinetics, J Sports Sci Med, 14, (2015); Lieberman D.E., Venkadesan M., Werbel W.A., Daoud A.I., D'andrea S., Davis I.S., Mang'Eni R.O., Pitsiladis Y., Foot strike patterns and collision forces in habitually barefoot versus shod runners, Nature, 463, pp. 531-535, (2010); Li S., Zhang Y., Gu Y., Ren J., Stress distribution of metatarsals during forefoot strike versus rearfoot strike: A finite element study, Comput Biol Med, 91, pp. 38-46, (2017); Kulmala J.-P., Avela J., Pasanen K., Parkkari J., Forefoot strikers exhibit lower running-induced knee loading than rearfoot strikers, Med Sci Sports Exerc, 45, pp. 2306-2313, (2013); Hamill J., Gruber A.H., Derrick T.R., Lower extremity joint stiffness characteristics during running with different footfall patterns, Eur J Sport Sci, 14, pp. 130-136, (2014); Larson P., Higgins E., Kaminski J., Decker T., Preble J., Lyons D., McIntyre K., Normile A., Foot strike patterns of recreational and sub-elite runners in a long-distance road race, J Sports Sci, 29, pp. 1665-1673, (2011); Breine B., Malcolm P., Frederick E.C., De Clercq D., Relationship between running speed and initial foot contact patterns, Med Sci Sports Exerc, 46, pp. 1595-1603, (2014); Lieberman D.E., Castillo E.R., Otarola-Castillo E., Sang M.K., Sigei T.K., Ojiambo R., Okutoyi P., Pitsiladis Y., Variation in foot strike patterns among habitually barefoot and shod runners in Kenya, PLoS ONE, 10, (2015); Keller T.S., Weisberger A., Ray J., Hasan S., Shiavi R., Spengler D., Relationship between vertical ground reaction force and speed during walking, slow jogging, and running, Clin Biomech, 11, pp. 253-259, (1996); Nigg B., Bahlsen H., Luethi S., Stokes S., The influence of running velocity and midsole hardness on external impact forces in heel-toe running, J Biomech, 20, pp. 951-959, (1987); Ekizos A., Santuz A., Arampatzis A., Runners Employ Different Strategies to Cope With Increased Speeds Based on Their Initial Strike Patterns, Frontiers in Physiology, 12, (2021); Forrester S., Townend J., The effect of running velocity on footstrike angle–A curve-clustering approach, Gait Posture, 41, pp. 26-32, (2015); Sadeghi H., Allard P., Prince F., Labelle H., Symmetry and limb dominance in able-bodied gait: a review, Gait Posture, 12, pp. 34-45, (2000); Stiffler-Joachim M.R., Lukes D.H., Kliethermes S.A., Heiderscheit B.C., Lower extremity kinematic and kinetic asymmetries during running, Med Sci Sports Exerc, 53, pp. 945-950, (2021); Cheung R.T., Davis I.S., Landing pattern modification to improve patellofemoral pain in runners: a case series, J Orthop Sports Phys Ther, 41, pp. 914-919, (2011); Gabbett T.J., Mulvey M.J., Time-motion analysis of small-sided training games and competition in elite women soccer players, J Strength Cond Res, 22, pp. 543-552, (2008); Ferber R., Davis I.M., Williams Iii D.S., Gender differences in lower extremity mechanics during running, Clin Biomech, 18, pp. 350-357, (2003); Vannatta C.N., Heinert B.L., Kernozek T.W., Biomechanical risk factors for running-related injury differ by sample population: A systematic review and meta-analysis, Clin Biomech, 75, (2020); Mason J., Kniewasser C., Hollander K., Zech A., Intrinsic risk factors for ankle sprain differ between male and female athletes: a systematic review and meta-analysis, Sports Medic-Open, 8, (2022); Hollander K., Rahlf A.L., Wilke J., Edler C., Steib S., Junge A., Zech A., Sex-specific differences in running injuries: a systematic review with meta-analysis and meta-regression, Sports Med, 51, pp. 1011-1039, (2021); Elliott-Sale K.J., Minahan C.L., de Jonge X.A.J., Ackerman K.E., Sipila S., Constantini N.W., Lebrun C.M., Hackney A.C., Methodological considerations for studies in sport and exercise science with women as participants: a working guide for standards of practice for research on women, Sports Med, 51, pp. 843-861, (2021); Hagstrom A.D., Yuwono N., Warton K., Ford C.E., Sex bias in cohorts included in sports medicine research, Sports Medic, pp. 1-6, (2021); Von Elm E., Altman D.G., Egger M., Pocock S.J., Gotzsche P.C., Vandenbroucke J.P., The strengthening the reporting of observational studies in epidemiology (STROBE) statement: guidelines for reporting observational studies, Bull World Health Organ, 85, pp. 867-872, (2007); Coren S., Porac C., The validity and reliability of self-report items for the measurement of lateral preference, Br J Psychol, 69, pp. 207-211, (1978); Bentley D.J., Newell J., Bishop D., Incremental exercise test design and analysis, Sports Med, 37, pp. 575-586, (2007); Fellin R.E., Rose W.C., Royer T.D., Davis I.S., Comparison of methods for kinematic identification of footstrike and toe-off during overground and treadmill running, J Sci Med Sport, 13, pp. 646-650, (2010); Gruber A.H., Boyer K., Silvernail J.F., Hamill J., Comparison of classification methods to determine footfall pattern, Footwear Sci, 5, pp. S103-S104, (2013); Robinson R., Herzog W., Nigg B.M., Use of force platform variables to quantify the effects of chiropractic manipulation on gait symmetry, J Manipulative Physiol Ther, 10, pp. 172-176, (1987); Hanley B., Bissas A., Merlino S., Gruber A.H., Most marathon runners at the 2017 IAAF World Championships were rearfoot strikers, and most did not change footstrike pattern, J Biomech, 92, pp. 54-60, (2019); Vallortigara G., Rogers L.J., Survival with an asymmetrical brain: Advantages and disadvantages of cerebral lateralization, Behav Brain Sci, 28, 4, pp. 575-589, (2005); Maly T., Zahalka F., Mala L., Muscular strength and strength asymmetries in elite and sub-elite professional soccer players, Sport Science, 7, pp. 26-33, (2014); Daneshjoo A., Rahnama N., Mokhtar A.H., Yusof A., Bilateral and unilateral asymmetries of isokinetic strength and flexibility in male young professional soccer players, J Hum Kinet, 36, (2013); Maloney S.J., The relationship between asymmetry and athletic performance: A critical review, The Journal of Strength & Conditioning Research, 33, pp. 2579-2593, (2019); Neumann R., Bos K.B.; Hanley B., Tucker C.B., Gait variability and symmetry remain consistent during high-intensity 10,000 m treadmill running, J Biomech, 79, pp. 129-134, (2018); Bishop C., Read P., McCubbine J., Turner A., Vertical and horizontal asymmetries are related to slower sprinting and jump performance in elite youth female soccer players, The Journal of Strength & Conditioning Research, 35, pp. 56-63, (2021); Beck O.N., Azua E.N., Grabowski A.M., Step time asymmetry increases metabolic energy expenditure during running, Eur J Appl Physiol, 118, pp. 2147-2154, (2018); Radzak K.N., Putnam A.M., Tamura K., Hetzler R.K., Stickley C.D., Asymmetry between lower limbs during rested and fatigued state running gait in healthy individuals, Gait Posture, 51, pp. 268-274, (2017); Gao Z., Mei Q., Fekete G., Baker J.S., Gu Y., The effect of prolonged running on the symmetry of biomechanical variables of the lower limb joints, Symmetry, 12, (2020); Cavagna G., The landing–take-off asymmetry in human running, J Exp Biol, 209, pp. 4051-4060, (2006); Mo S., Lau F.O., Lok A.K., Chan Z.Y., Zhang J.H., Shum G., Cheung R.T., Bilateral asymmetry of running gait in competitive, recreational and novice runners at different speeds, Hum Mov Sci, 71, (2020); Girard O., Morin J.-B., Ryu J., Read P., Townsend N., Running velocity does not influence lower limb mechanical asymmetry, Frontiers in sports and active living, 1, (2019); Di Michele R., Merni F., The concurrent effects of strike pattern and ground-contact time on running economy, J Sci Med Sport, 17, pp. 414-418, (2014); Ekizos A., Santuz A., Arampatzis A.; Nelson R.C., Brooks C.M., Pike N.L., Biomechanical comparison of male and female distance runners, Ann N Y Acad Sci, 301, pp. 793-807, (1977); Schubert A.G., Kempf J., Heiderscheit B.C., Influence of stride frequency and length on running mechanics: a systematic review, Sports health, 6, pp. 210-217, (2014); Van Hooren B., Fuller J.T., Buckley J.D., Miller J.R., Sewell K., Rao G., Barton C., Bishop C., Willy R.W., Is motorized treadmill running biomechanically comparable to overground running? A systematic review and meta-analysis of cross-over studies, Sports Med, 50, pp. 785-813, (2020); Robadey J., Staudenmann D., Schween R., Gehring D., Gollhofer A., Taube W., Lower between-limb asymmetry during running on treadmill compared to overground in subjects with laterally pronounced knee osteoarthritis, PLoS ONE, 13, (2018); Kluitenberg B., Bredeweg S.W., Zijlstra S., Zijlstra W., Buist I., Comparison of vertical ground reaction forces during overground and treadmill running, A validation study BMC musculoskeletal disorders, 13, pp. 1-8, (2012); Gabbett T., Mulvey M., Time-Motion Analysis of Small-Sided Training Games and Competition in Elite Women Soccer Players, J strength cond res National Strength Cond Association, 22, pp. 543-552, (2008)","S.D. Siegel; Department of Human Movement Science and Exercise Physiology, Institute of Sport Science, Friedrich Schiller University Jena, Jena, Seidelstraße 20, 07749, Germany; email: stanislaw.siegel@uni-jena.de","","BioMed Central Ltd","20521847","","","","English","BMC Sports Sci. Med. Rehabil.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85165294411" "Sudds K.J.; Maurus P.; Nigg S.R.; Wyon M.A.; Kolokythas N.","Sudds, Karen J. (58522210400); Maurus, Philipp (57209262454); Nigg, Sandro R. (55233556900); Wyon, Matthew A. (57207587908); Kolokythas, Nico (57205753660)","58522210400; 57209262454; 55233556900; 57207587908; 57205753660","The Effects of the 11+ Dance Neuromuscular Program on Jump Height and Lower Extremity Biomechanics in Female Adolescent Dancers: A Non-Randomized Controlled Pilot Trial","2023","Journal of Dance Medicine and Science","27","3","","139","152","13","0","10.1177/1089313X231178096","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85166635062&doi=10.1177%2f1089313X231178096&partnerID=40&md5=1501984432877628b79b83aabeb34a9b","Institute of Human Sciences, University of Wolverhampton, Walsall, United Kingdom; Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada; National Institute of Dance Medicine and Science, Birmingham, United Kingdom; Elmhurst Ballet School, Birmingham, United Kingdom","Sudds K.J., Institute of Human Sciences, University of Wolverhampton, Walsall, United Kingdom, Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada; Maurus P., Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada; Nigg S.R., Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada; Wyon M.A., Institute of Human Sciences, University of Wolverhampton, Walsall, United Kingdom, National Institute of Dance Medicine and Science, Birmingham, United Kingdom; Kolokythas N., Institute of Human Sciences, University of Wolverhampton, Walsall, United Kingdom, Elmhurst Ballet School, Birmingham, United Kingdom","Introduction: Neuromuscular warm-up programs, such as FIFA 11+ were developed as early as 2006. These programs have been effective in reducing the risk of injury in female athletes by decreasing the moments surrounding the knee and improving neuromuscular control during static and dynamic movements such as jumping and landing. In addition, they have been effective for improving jump height in soccer, volleyball, and basketball. Methods: The effects of the 11+ Dance, a dance-specific neuromuscular warm-up program, was examined on jump height and lower extremity biomechanics during bilateral and single leg countermovement jumps in recreational dancers. Twenty female adolescents from 2 dance schools participated in this 2-centered 8-week controlled non-randomized trial. The intervention group (IG) performed the 11+ Dance program 3×/week for 8-weeks during the first 30-minute of their regularly scheduled dance classes. The control group (CG) continued with their regular dance classes routine. Ground reaction force and motion capture data were used to assess jump height and lower extremity biomechanics pre and post intervention. Results: Both groups statistically increased their jump height (CG: Z = 1.89-2.45, P ≤.0167; IG: Z = 2.18-2.76, P ≤.0167). However, no statistical between group differences were observed (Z = 0.38-1.22, P >.05). During takeoff, the IG statistically reduced peak knee extension moments (t(18) = -3.04 to -3.77, P ≤.0167) while increasing peak hip extension moments (t(18) = 2.16-2.79, P ≤.05) and peak hip flexion angles (t(18) = 2.68-3.72, P ≤.0167) compared to the CG. The IG also increased the hip flexion angles compared to the CG during landing (t(18) = 2.78-5.13, P ≤.0167) while no systematic differences were observed in all other variables of lower extremity biomechanics. Conclusion: The reduced joint load at the knee observed during takeoff needs further investigation. Neuromuscular training, such as the 11+ Dance, is supported by numerous quality research. Due to its simplicity, the 11+ Dance may be feasible and beneficial to complement regular warm-ups in recreational dance practice. © The Author(s) 2023.","ballet; lower extremity; warm-up","","Macintyre J., Joy E., Foot and ankle injuries in dance, Clin Sports Med, 19, 2, pp. 351-368, (2000); Emery C.A., Meeuwisse W.H., McAllister J.R., Survey of sport participation and sport injury in Calgary and area high schools, Clin J Sport Med, 16, 1, pp. 20-26, (2006); Caine D.G., Goodwin B.J., Caine C., Bergeron G., Epidemiological review of injury in pre-professional ballet dancers, J Dance Med Sci, 19, 4, pp. 140-148, (2015); Roberts K.J., Nelson N.G., McKenzie L., Dance-related injuries in children and adolescents treated in US emergency departments in 1991–2007, J Phys Act Health, 10, pp. 143-150, (2013); Black A.M., Meeuwisse D.W., Eliason P.H., Hagel B.E., Emery C.A., Sport participation and injury rates in high school students: a Canadian survey of 2029 adolescents, J Safety Res, 78, pp. 314-321, (2021); Ekegren C.L., Quested R., Brodrick A., Injuries in pre-professional ballet dancers: incidence, characteristics and consequences, J Sci Med Sport, 17, 3, pp. 271-275, (2014); Gamboa J.M., Roberts L.A., Maring J., Fergus A., Injury patterns in elite preprofessional ballet dancers and the utility of screening programs to identify risk characteristics, J Orthop Sports Phys Ther, 38, 3, pp. 126-136, (2008); Kolokythas N., Metsios G.S., Galloway S.M., Allen N., Wyon M.A., The relationship of year group and sex on injury incidence and countermovement jump in adolescent ballet dancers: a cross-sectional analysis, J Dance Med Sci, 26, pp. 155-164, (2022); Liederbach M., Richardson M., Rodriguez M., Compagno J., Dilgen F., Rose D., Jump exposures in the dance training environment: a measure of ergonomic demand, J Athl Train, 41, 2, (2006); Simpson K.J., Kanter L., Jump distance of dance landings influencing internal joint forces: I. 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Chappell J.D., Limpisvasti O., Effect of a neuromuscular training program on the kinetics and kinematics of jumping tasks, Am J Sports Med, 36, 6, pp. 1081-1086, (2008); Rossler R., Donath L., Bizzini M., Faude O., A new injury prevention programme for children’s football–FIFA 11+ Kids–can improve motor performance: a cluster-randomised controlled trial, J Sports Sci, 34, 6, pp. 549-556, (2016); Noyes F., Barber-Westin S., Neuromuscular retraining in female adolescent athletes: effect on athletic performance indices and noncontact anterior cruciate ligament injury rates, Sports, 3, 2, pp. 56-76, (2015); Grindstaff T.L., Hammill R.R., Tuzson A.E., Hertel J., Neuromuscular control training programs and noncontact anterior cruciate ligament injury rates in female athletes: a numbers-needed-to-treat analysis, J Athl Train, 41, 4, (2006); Sadigursky D., Braid J.A., De Lira D.N.L., Et al., The FIFA 11+ injury prevention program for soccer players: a systematic review, BMC Sports Sci Med Rehabil, 9, 1, (2017); 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Cumming G., Calin-Jageman R., Introduction to the New Statistics: Estimation, Open Science, and Beyond, (2016); Zarei M., Abbasi H., Daneshjoo A., Et al., Long-term effects of the 11+ warm-up injury prevention programme on physical performance in adolescent male football players: a cluster-randomised controlled trial, J Sports Sci, 36, pp. 2447-2454, (2018); Chimera N.J., Swanik K.A., Swanik C.B., Straub S.J., Effects of plyometric training on muscle-activation strategies and performance in female athletes, J Athl Train, 39, 1, (2004); Lees A., Vanrenterghem J., De Clercq D., The maximal and submaximal vertical jump: implications for strength and conditioning, J Strength Cond Res, 18, 4, pp. 787-791, (2004); Ireland M.L., Willson J.D., Ballantyne B.T., Davis I.M., Hip strength in females with and without patellofemoral pain, J Orthop Sports Phys Ther, 33, 11, pp. 671-676, (2003); Powers C.M., The influence of abnormal hip mechanics on knee injury: a biomechanical perspective, J Orthop Sports Phys Ther, 40, 2, pp. 42-51, (2010); Faude O., Rossler R., Petushek E.J., Roth R., Zahner L., Donath L., Neuromuscular adaptations to multimodal injury prevention programs in youth sports: a systematic review with meta-analysis of randomized controlled trials, Front Physiol, 8, (2017); Zhang S.-N., Bates B.T., Dufek J.S., Contributions of lower extremity joints to energy dissipation during landings, Med Sci Sports Exerc, 32, 4, pp. 812-819, (2000); Myer G., Brent J., Ford K., Hewett T., A pilot study to determine the effect of trunk and hip focused neuromuscular training on hip and knee isokinetic strength, Br J Sports Med, 42, 7, pp. 614-619, (2008); Orishimo K.F., Kremenic I.J., Pappas E., Hagins M., Liederbach M., Comparison of landing biomechanics between male and female professional dancers, Am J Sports Med, 37, 11, pp. 2187-2193, (2009); Sinsurin K., Vachalathiti R., Jalayondeja W., Limroongreungrat W., Different sagittal angles and moments of lower extremity joints during single-leg jump landing among various directions in basketball and volleyball athletes, J Phys Ther Sci, 25, 9, pp. 1109-1113, (2013)","K.J. Sudds; Institute of Human Sciences, University of Wolverhampton, Walsall, United Kingdom; email: karensudds@gmail.com","","SAGE Publications Ltd","1089313X","","","","English","J Dance Med Sci","Article","Final","All Open Access; Bronze Open Access","Scopus","2-s2.0-85166635062" "Ludwig O.; Schneider G.; Kelm J.","Ludwig, Oliver (23967098400); Schneider, Günther (57205684954); Kelm, Jens (7006747095)","23967098400; 57205684954; 7006747095","Improvement of Groin Pain in a Football Player with Femoroacetabular Impingement via a Correction of the Pelvic Position—A Case Report","2023","Journal of Clinical Medicine","12","23","7443","","","","0","10.3390/jcm12237443","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85179329373&doi=10.3390%2fjcm12237443&partnerID=40&md5=e136beab30c44bb11494ef5c66ff2e43","Department of Sport Science, Rheinland-Pfälzische Technische Universität Kaiserslautern, Kaiserslautern, 67663, Germany; Clinic for Diagnostic and Interventional Radiology, Saarland University Medical Center Homburg, Homburg, 66421, Germany; Chirurgisch-Orthopädisches Zentrum Illingen, Illingen, 66557, Germany","Ludwig O., Department of Sport Science, Rheinland-Pfälzische Technische Universität Kaiserslautern, Kaiserslautern, 67663, Germany; Schneider G., Clinic for Diagnostic and Interventional Radiology, Saarland University Medical Center Homburg, Homburg, 66421, Germany; Kelm J., Chirurgisch-Orthopädisches Zentrum Illingen, Illingen, 66557, Germany","Background: Femoroacetabular impingement is one possible cause for groin pain and can lead to long periods of absence for football players. In cam impingement, the end-grade position of the leg at kicking makes the hip particularly prone to faulty contact between the acetabulum and the femoral head. Studies suggest that the resting position of the pelvis in the sagittal plane may have an important role in the biomechanics of movement in the presence of cam impingement. Methods: A 19-year-old male competitive footballer complained of sudden groin pain during a period of low athletic load. Biomechanical tests (3D posture and isometric strength analyses) showed that unbalanced individual strength training had resulted in an increased forward tilt of the pelvis. At the same time, cam impingement was confirmed radiologically, which obviously contributed to the sudden onset of the symptoms. The kicking technique of the athlete showed increased hip and trunk flexion, which also indicated a muscular imbalance. Targeted strength and stretching exercises three times a week improved the pelvic position in terms of reduced anteversion. At the same time, the patient performed strength exercises to improve his kicking technique. Results: After 8 weeks, improvements in his pelvic position and global posture and increased muscle strength could be verified. At the same time, the athlete was free of complaints again. Conclusions: When groin pain occurs in football players with cam impingement, special attention should be paid to the resting position of the pelvis in the sagittal plane. Correcting increased pelvic anteversion can prevent unfavourable end-grade collisions of the acetabulum and femoral head during kicking with strong hip flexion and adduction. Possible changes in the pelvic position due to adverse individual strength training performed by young athletes should always be kept in mind. © 2023 by the authors.","cam impingement; femoroacetabular impingement; football; groin pain; hyperlordosis; kicking technique; muscular imbalance; pelvic posture; pelvic tilt; soccer","abdominal wall musculature; acetabulum; adduction; adult; Article; athlete; balance impairment; biceps brachii muscle; biceps femoris muscle; biomechanics; body position; case report; clinical article; consensus; cortical bone; echography; epiphysis; femoral head; femoral neck; femoroacetabular impingement; football player; gluteus muscle; hallux; hamstring muscle; hip; hip extension; hip flexion; human; inguinal pain; isometrics; joint mobility; knee extension; lumbar spine; male; medical examination; mobilization; muscle mass; muscle strength; muscle training; nuclear magnetic resonance imaging; pain assessment; pectoral muscle; pectoralis major muscle; pelvic incidence; pelvic inclination; pelvic inclination angle; pelvic tilt; pelvis; quadriceps femoris muscle; range of motion; rectus abdominis muscle; resistance training; stereophotogrammetry; stretching exercise; supine position; thorax muscle; triceps brachii muscle; trunk; trunk flexion; young adult","Weir A., Brukner P., Delahunt E., Ekstrand J., Griffin D., Khan K.M., Lovell G., Meyers W.C., Muschaweck U., Orchard J., Et al., Doha agreement meeting on terminology and definitions in groin pain in athletes, Br. 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Biomech, 29, pp. 607-613, (2014); Peters S., Laing A., Emerson C., Mutchler K., Joyce T., Thorborg K., Holmich P., Reiman M., Surgical criteria for femoroacetabular impingement syndrome: A scoping review, Br. J. Sports Med, 51, pp. 1605-1610, (2017); Nguyen A.-D., Shultz S.J., Identifying relationships among lower extremity alignment characteristics, J. Athl. Train, 44, pp. 511-518, (2009); Lamontagne M., Kennedy M.J., Beaule P.E., The effect of cam FAI on hip and pelvic motion during maximum squat, Clin. Orthop. Relat. Res, 467, pp. 645-650, (2009); Ross J.R., Nepple J.J., Philippon M.J., Kelly B.T., Larson C.M., Bedi A., Effect of changes in pelvic tilt on range of motion to impingement and radiographic parameters of acetabular morphologic characteristics, Am. J. Sports Med, 42, pp. 2402-2409, (2014); Stella A.B., Galimi A., Martini M., Di Lenarda L., Murena L., Deodato M., Muscle asymmetries in the lower limbs of male soccer players: Preliminary findings on the association between countermovement jump and tensiomyography, Sports, 10, (2022); Ludwig O., Kelm J., Hopp S., Impact of Quadriceps/Hamstrings Torque Ratio on Three-Dimensional Pelvic Posture and Clinical Pubic Symphysis Pain-Preliminary Results in Healthy Young Male Athletes, Appl. Sci, 10, (2020); Ludwig O., Kelm J., Groin pain and muscular imbalance of quadriceps and hamstrings in an elite soccer player—A case study, Sportverletz. Sportschaden, 30, pp. 163-167, (2016); Teixeira J., Carvalho P., Moreira C., Santos R., Isokinetic assessment of muscle imbalances and bilateral differences between knee extensores and flexores’ strength in basketball, footbal, handball and volleyball athletes, Int. J. Sports Sci, 4, pp. 1-6, (2014)","O. Ludwig; Department of Sport Science, Rheinland-Pfälzische Technische Universität Kaiserslautern, Kaiserslautern, 67663, Germany; email: oliver.ludwig@rptu.de","","Multidisciplinary Digital Publishing Institute (MDPI)","20770383","","","","English","J. Clin. Med.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85179329373" "Zhang Z.","Zhang, Zhijian (56514390700)","56514390700","Robot soccer target tracking algorithm research and analogue simulation","2014","BioTechnology: An Indian Journal","10","5","","1120","1125","5","0","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84922756137&partnerID=40&md5=bc215ab8e017444430e9a2f1a340fdaa","Department of Physical Education, Qingdao Hotel Management College, Qingdao, Shandong, China","Zhang Z., Department of Physical Education, Qingdao Hotel Management College, Qingdao, Shandong, China","Robot soccer system is proposed by Canadian, the purpose is to provide a kind of standard line service by using each kind of techniques so that to improve the field development. The paper based on the same purpose, it makes dynamics, kinematics and other correlation researches by using wheel mobile soccer robot and presents mechanical analysis, finally it verifies the model conforms to practice by applying analogue simulation way, so that build foundation for soccer robot undertakings development. © 2014 Trade Science Inc. - INDIA.","Analogue simulation; Biomechanics; Soccer robot; Target tracking","Algorithms; Biomechanics; Clutter (information theory); Robot applications; Robots; Sports; Analogue simulation; Field development; Mechanical analysis; Robot soccer; Robot Soccer system; Soccer robot; Target tracking algorithm; Target tracking","Tehrani A.F., Doosthosseini A.M., Moballegh H.R., Amini P., DaneshPanah M.M., A New Odometry System to Reduce Asymmetric Errors for Omnidirectional Mobile Robots[J], RoboCup, pp. 600-610, (2003); Kalman R.E., A New Approach to Linear Filtering and Prediction Problems [J], Transaction of the ASME-Journal of Basic Engineering, 82, pp. 35-45, (1960); Marques C.F., Lima P.U., A Localization Method for a Soccer Robot Using a Vision-Based Omni-Directional Sensor [J], RoboCup, pp. 96-107, (2000); Thrun S., Fox D., Burgard W., Dellaert F., Robust Monte Carlo localization for mobile robots [J], Artificial Intelligence Journal, 128, (2001); Li-Ping K., Evaluation on Technical data of Free Kick in Impose Fine Region in Football Game[J], Bulletin of Sport Science & Technology, 19, 3, pp. 19-20, (2011); Wei Z., On the Training of Football Shooting[J], Sport Science and Technology, 3, pp. 23-26+33, (2000); Jilin Y., Et al., Research on shooting in the 17th World Cup football semi-finals[J], Journal of Shandong Physical Education Institute, 18, 3, pp. 51-53, (2002); Xin W., Analysis on the best region of shoot [J], Journal of Nanjing Institute of Physical Education, 16, 5, pp. 96-97, (2002); Ji Z., Xiang, A Study on Effect of Application of the Skills of Side-to-middle Court Passing of Chinese Football Team[J], Journal of Hubei Sports Science, 21, 1, pp. 74-75+79, (2002); Ning L., Jiandong Z., Statistical Analysis of Goals at 19th FIFA World Cup [J], Journal of Jilin Institute of Physical Education, 27, 3, pp. 45-47, (2011)","","","Trade Science Inc","09747435","","","","English","Biotechnol. An Indian J.","Article","Final","","Scopus","2-s2.0-84922756137" "Ono K.; Yoshida T.; Ota K.; Tanigawa S.","Ono, Kyoya (58775105200); Yoshida, Takuya (55700678200); Ota, Kazuki (57226183394); Tanigawa, Satoru (57190946618)","58775105200; 55700678200; 57226183394; 57190946618","Compensatory Kinetics During the Side-Hop Test in Individuals With Chronic Ankle Instability","2023","Journal of Athletic Training","58","11-12","","920","926","6","0","10.4085/1062-6050-0592.22","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85180367143&doi=10.4085%2f1062-6050-0592.22&partnerID=40&md5=c585c36936724f5c1ca1589a13fd567d","Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, Japan; Japan Institute of Sports Sciences, Nishigaoka, Kita-ku, Tokyo, Japan; Faculty of Health and Sport Science, University of Tsukuba, Ibaraki, Japan","Ono K., Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, Japan; Yoshida T., Japan Institute of Sports Sciences, Nishigaoka, Kita-ku, Tokyo, Japan; Ota K., Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, Japan; Tanigawa S., Faculty of Health and Sport Science, University of Tsukuba, Ibaraki, Japan","Context: Individuals with chronic ankle instability (CAI) exhibit altered movement strategies during side-cutting tasks. However, no researchers have assessed how altered movement strategies affect cutting performance. Objective: To investigate compensatory strategies in the side-hop test (SHT), with a focus on the entire lower extremity, among individuals with CAI. Design: Cross-sectional study. Setting: Laboratory. Patients or Other Participants: A total of 40 male soccer players comprising a CAI group (n ¼ 20; age ¼ 20.35 6 1.15 years, height ¼ 173.95 6 6.07 cm, mass ¼ 68.09 6 6.73 kg) and a control group (n ¼ 20; age ¼ 20.45 6 1.50 years, height ¼ 172.39 6 4.39 cm, mass ¼ 67.16 6 4.87 kg). Intervention(s): Participants performed 3 successful SHT trials. Main Outcome Measure(s): We calculated SHT time, torque, and torque power in the ankle, knee, and hip joints during the SHT using motion-capture cameras and force plates. Confidence intervals for each group that did not overlap by .3 points consecutively in the time series data indicated a difference between groups. Results: Compared with the control group, the CAI group showed (1) no delayed SHT time; (2) lower ankle-inversion torque (range ¼ 0.11–0.13 N·m/kg) and higher hip-extension (range ¼ 0.18–0.72 N·m/kg) and -abduction torque (0.26 N·m/kg); (3) less concentric power in ankle dorsiflexion-plantar flexion (0.18 W/kg) and inversion-eversion (0.40 W/kg), more concentric power in hip flexion-extension (0.73 W/kg), and more eccentric power in knee varus-valgus (0.27 W/kg). Conclusions: Individuals with CAI were likely to rely on hip-joint function to compensate for ankle instability and demonstrated no differences in SHT time compared with the control group. Therefore, the movement strategies of individuals with CAI could differ from those of individuals without CAI, even if SHT time is not different. © 2023 National Athletic Trainers' Association Inc.. All rights reserved.","ankle sprains; functional performance test; injury prevention; return to sport","Adolescent; Adult; Ankle; Ankle Injuries; Ankle Joint; Biomechanical Phenomena; Chronic Disease; Cross-Sectional Studies; Humans; Joint Instability; Lower Extremity; Male; Young Adult; adolescent; adult; ankle; ankle injury; biomechanics; chronic disease; cross-sectional study; human; joint instability; lower limb; male; young adult","Dvorak J, Junge A, Grimm K, Kirkendall D., Medical report from the 2006 FIFA World Cup Germany, Br J Sports Med, 41, 9, pp. 578-581, (2007); Hootman JM, Dick R, Agel J., Epidemiology of collegiate injuries for 15 sports: summary and recommendations for injury prevention initiatives, J Athl Train, 42, 2, pp. 311-319, (2007); Anandacoomarasamy A, Barnsley L., Long term outcomes of inversion ankle injuries, Br J Sports Med, 39, 3, (2005); Gribble PA, Delahunt E, Bleakley CM, Et al., Selection criteria for patients with chronic ankle instability in controlled research: a position statement of the International Ankle Consortium, J Athl Train, 49, 1, pp. 121-127, (2014); Attenborough AS, Hiller CE, Smith RM, Stuelcken M, Greene A, Sinclair PJ., Chronic ankle instability in sporting populations, Sports Med, 44, 11, pp. 1545-1556, (2014); Hertel J, Corbett RO., An updated model of chronic ankle instability, J Athl Train, 54, 6, pp. 572-588, (2019); McKay GD, Goldie PA, Payne WR, Oakes BW., Ankle injuries in basketball: injury rate and risk factors, Br J Sports Med, 35, 2, pp. 103-108, (2001); Bloomfield J, Polman R, O'Donoghue P., Physical demands of different positions in FA Premier League soccer, J Sports Sci Med, 6, 1, pp. 63-70, (2007); Simpson JD, Stewart EM, Turner AJ, Macias DM, Chander H, Knight AC., Lower limb joint kinetics during a side-cutting task in participants with or without chronic ankle instability, J Athl Train, 55, 2, pp. 169-175, (2020); Kim H, Son SJ, Seeley MK, Hopkins JT., Altered movement biomechanics in chronic ankle instability, coper, and control groups: energy absorption and distribution implications, J Athl Train, 54, 6, pp. 708-717, (2019); Kim H, Son SJ, Seeley MK, Hopkins JT., Kinetic compensations due to chronic ankle instability during landing and jumping, Med Sci Sports Exerc, 50, 2, pp. 308-317, (2018); Fox AS., Change-of-direction biomechanics: is what’s best for anterior cruciate ligament injury prevention also best for performance?, Sports Med, 48, 8, pp. 1799-1807, (2018); Rosen AB, Needle AR, Ko J., Ability of functional performance tests to identify individuals with chronic ankle instability: a systematic review with meta-analysis, Clin J Sport Med, 29, 6, pp. 509-522, (2019); Docherty CL, Arnoldt BL, Gansneder BM, Hurwitz S, Gieck J., Functional-performance deficits in volunteers with functional ankle instability, J Athl Train, 40, 1, pp. 30-34, (2005); Delahunt E, Monaghan K, Caufield B., Ankle function during hopping in subjects with functional instability of the ankle joint, Scand J Med Sci Sports, 17, 6, pp. 641-648, (2007); Yoshida M, Aoki N, Taniguchi K, Yoshida M, Katayose M., Kinematic analysis of the ankle joint on the side-hop test in subjects with ankle sprains, Transl Sports Med, 1, 6, pp. 265-272, (2018); Yoshida M, Taniguchi K, Katayose M., Analysis of muscle activity and ankle joint movement during the side-hop test, J Strength Cond Res, 25, 8, pp. 2255-2264, (2011); Li Y, Ko J, Zhang S, Brown CN, Simpson KJ., Biomechanics of ankle giving way: a case report of accidental ankle giving way during the drop landing test, J Sport Health Sci, 8, 5, pp. 494-502, (2019); Delahunt E, Monaghan K, Caulfield B., Changes in lower limb kinematics, kinetics, and muscle activity in subjects with functional instability of the ankle joint during a single leg drop jump, J Orthop Res, 24, 10, pp. 1991-2000, (2006); Marshall AN, Hertel J, Hart JM, Russell S, Saliba SA., Visual biofeedback and changes in lower extremity kinematics in individuals with medial knee displacement, J Athl Train, 55, 3, pp. 255-264, (2020); Cohen J., Statistical Power Analysis for the Behavioral Sciences, (1988); Kotsifaki A, Whiteley R, Van Rossom S, Et al., Single leg hop for distance symmetry masks lower limb biomechanics: time to discuss hop distance as decision criterion for return to sport after ACL reconstruction?, Br J Sports Med, 56, 5, pp. 249-256, (2022); Ko J, Rosen AB, Brown CN., Comparison between single and combined clinical postural stability tests in individuals with and without chronic ankle instability, Clin J Sport Med, 27, 4, pp. 394-399, (2017); Linens SW, Ross SE, Arnold BL, Gayle R, Pidcoe P., Postural-stability tests that identify individuals with chronic ankle instability, J Athl Train, 49, 1, pp. 15-23, (2014); Sharma N, Sharma A, Singh Sandhu J., Functional performance testing in athletes with functional ankle instability, Asian J Sports Med, 2, 4, pp. 249-258, (2011); Wikstrom EA, Tillman MD, Chmielewski TL, Cauraugh JH, Naugle KE, Borsa PA., Self-assessed disability and functional performance in individuals with and without ankle instability: a case control study, J Orthop Sports Phys Ther, 39, 6, pp. 458-467, (2009); Yamaguchi GT, Sawa AG-U, Moran MJ, Fessler MJ, Winters JM., A survey of human musculotendon actuator parameters, Multiple Muscle Systems: Biomechanics and Movement Organization, pp. 717-773, (1990); Alexander RM, Ker RF., The architecture of leg muscles, Multiple Muscle Systems: Biomechanics and Movement Organization, pp. 568-577, (1990); Marshall BM, Franklyn-Miller AD, King EA, Moran KA, Strike SC, Falvey EC., Biomechanical factors associated with time to complete a change of direction cutting maneuver, J Strength Cond Res, 28, 10, pp. 2845-2851, (2014); Welch N, Richter C, Franklyn-Miller A, Moran K., Principal component analysis of the biomechanical factors associated with performance during cutting, J Strength Cond Res, 35, 6, pp. 1715-1723, (2021); Havens KL, Sigward SM., Cutting mechanics: relation to performance and anterior cruciate ligament injury risk, Med Sci Sports Exerc, 47, 4, pp. 818-824, (2015)","K. Ono; University of Tsukuba, Graduate School of Comprehensive Human Sciences, Tsukuba, Tennodai 1-1-1, Ibaraki, 305-8574, Japan; email: kokoandkyouya@gmail.com","","National Athletic Trainers' Association Inc.","10626050","","JATTE","37071526","English","J. Athl. Train.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85180367143" "Alhammad A.; Herrington L.; Jones P.; Althomali O.W.; Jones R.","Alhammad, Ayman (58082774800); Herrington, Lee (7004230643); Jones, Paul (55308526600); Althomali, Omar W. (57219142308); Jones, Richard (8972539000)","58082774800; 7004230643; 55308526600; 57219142308; 8972539000","The reliability of lower limb 3D gait analysis variables during a change of direction to 90- A nd 135-degree manoeuvres in recreational soccer players","2023","Journal of Back and Musculoskeletal Rehabilitation","36","1","","173","180","7","0","10.3233/BMR-210351","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85147046124&doi=10.3233%2fBMR-210351&partnerID=40&md5=b334bd3397727f45642a5bccac7f8827","Medical Rehabilitation Hospital, Ministry of Health, Madinah, Saudi Arabia; School of Health and Society, University of Salford, Salford, United Kingdom; Department of Physiotherapy, College of Applied Medical Sciences, University of Ha'il, Hail, Saudi Arabia","Alhammad A., Medical Rehabilitation Hospital, Ministry of Health, Madinah, Saudi Arabia; Herrington L., School of Health and Society, University of Salford, Salford, United Kingdom; Jones P., School of Health and Society, University of Salford, Salford, United Kingdom; Althomali O.W., Department of Physiotherapy, College of Applied Medical Sciences, University of Ha'il, Hail, Saudi Arabia; Jones R., School of Health and Society, University of Salford, Salford, United Kingdom","BACKGROUND: Several biomechanical outcomes are being used to monitor the risk of injuries; therefore, their reliability and measurement errors need to be known. OBJECTIVE: To measure the reliability and measurement error in lower limb 3D gait analysis outcomes during a 90? and 135? change of direction (COD) manoeuvre. METHODS: A test re-test reliability study for ten healthy recreational players was conducted at seven-day intervals. Kinematics (Hip flexion, adduction, internal rotation angles and knee flexion abduction angles) and kinetics (Knee abduction moment and vertical ground reaction force) data during cutting 90? and 135? were collected using 3D gait analysis and force platform. Five trials for each task and leg were collected. Standard error of measurement (SEM) and the intraclass correlation coefficient (ICC) were calculated from the randomised leg. RESULT: The ICC values of the kinematics, kinetics, and vertical ground reaction force (VGRF) outcomes (90? and 135?) ranged from 0.85 to 0.95, showing good to excellent reliability. The SEM for joint angles was less than 1.69?. The VGRV showed a higher ICC value than the other outcomes. CONCLUSION: The current study results support the use of kinematics, kinetics, and VGRF outcomes for the assessment of knee ACL risk in clinic or research. However, the hip internal rotation angle should be treated with caution since the standard measurement error exceeded 10% compared to the mean value. The measurement errors provided in the current study are valuable for future studies. © 2023-IOS Press. All rights reserved.","3-dimansional video analysis; Biomechanics; change of direction (cod); cutting manoeuvers; kinematics; kinetics; measurement reliability; risk","Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Gait Analysis; Humans; Knee; Knee Joint; Lower Extremity; Reproducibility of Results; Soccer; abduction; adduction; article; biomechanics; clinical article; controlled study; correlation coefficient; gait; ground reaction force; hip; human; joint angle; kinematics; kinetics; knee function; lower limb; measurement error; outcome assessment; randomized controlled trial (topic); reliability; risk assessment; rotation; soccer player; test retest reliability; videorecording; anterior cruciate ligament injury; biomechanics; gait; injury; knee; lower limb; reproducibility; soccer","Kim K.T., Kim H.J., Lee H.I., Park Y.J., Kang D.G., Yoo J.I., Et al., A comparison of results after anterior cruciate ligament reconstruction in over 40 and under 40 years of age: A metaanalysis, Knee Surg Relat Res, 30, 2, pp. 95-106, (2018); Moses B., Orchard J., Orchard J., Systematic Review Annual Incidence of ACL Injury and Surgery in Various Populations, Res Sports Med., 1, 20, pp. 157-179, (2012); Montalvo A.M., Schneider D.K., Yut LWebster K.E., Beynnon B., Kocher M.S., Et al., What's my risk of sustaining an ACL injury while playing sports""? 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Jones P.A., Herrington L.C., Graham-Smith P., Ardern C.L., Taylor N.F., Feller J.A., Et al., Technique determinants of knee joint loads during cutting in female soccer players., Hum Mov Sci. 2015 Jun, 1, 42, pp. 203-211; Havens K.L., Sigward S.M., Cutting mechanics: Relation to performance and anterior cruciate ligament injury risk, Med Sci Sports Exerc., 47, 4, pp. 818-824, (2015); Imwalle L., Myer G., Ford K., Hewett T., Relationship between Hip and Knee Kinematics in Athletic Women during Cutting Maneuvers: A Possible Link to Noncontact Anterior Cruciate Ligament Injury and Prevention, J Strength Cond Res, 23, 8, pp. 2223-2230, (2009); Sigward S.M., Powers C.M., Loading characteristics of females exhibiting excessive valgus moments during cutting, Clin Biomech (Bristol, Avon), 22, 7, pp. 827-833, (2007); Leppanen M., Pasanen K., Kujala U.M., Vasankari T., Kannus P., Ayramo S., Et al., Stiff Landings Are Associated with Increased ACL Injury Risk in Young Female Basketball and Floorball Players, Am J Sports Med. 2017 Feb, 45, 2, pp. 386-393; Benis R., Torre A., Bonato M., Anterior cruciate ligament injury profile in female elite Italian basketball league, J Sports Med Phys Fitness. 2018 Mar, 58, 3, pp. 280-286; Montgomery C., Blackburn J., Withers D., Tierney G., Moran C., Simms C., Mechanisms of ACL injury in professional rugby union: A systematic video analysis of 36 cases, Br J Sports Med., 52, 15, pp. 994-1001, (2018); Fox A.S., Change-of-Direction Biomechanics Is What's Best for Anterior Cruciate Ligament Injury Prevention Also Best for Performance?, Sports Med., 48, 8, pp. 1799-1807, (2018); Tribolet R., Bennett K., Watsford M., Fransen J., A multidimensional approach to talent identification and selection in highlevel youth Australian Football players, J Sports Sci., 26, 36, pp. 1-7, (2018); Lopes T.J.A., Simic M., Myer G.D., Ford K.R., Hewett T.E., Pappas E., The Effects of Injury Prevention Programs on the Biomechanics of Landing Tasks: A Systematic Review with Metaanalysis, Am J Sports Med. 2018 May, 46, 6, pp. 1492-1499; Dix C., Arundale A., Silvers-Granelli H., Marmon A., Zarzycki R., Snyder-Mackler L., Biomechanical Changes during a 90 Cut in Collegiate Female Soccer Players with Participation in the 11, Int J Sports Phys Ther. 2021 Jun, 16, 3, pp. 671-680; Alenezi F., Herrington L., Jones P., Jones R., How reliable are lower limb biomechanical variables during running and cutting tasks, J Electromyogr Kinesiol, 30, pp. 137-142, (2016); Galna B., Barry G., Jackson D., Mhiripiri D., Olivier P., Rochester L., Accuracy of the Microsoft Kinect sensor for measuring movement in people with Parkinson's disease, Gait Posture, 39, 4, pp. 1062-1068, (2014); Meldrum D., Shouldice C., Conroy R., Jones K., Forward M., Test-retest reliability of three dimensional gait analysis: Including a novel approach to visualising agreement of gait cycle waveforms with Bland and Altman plots, Gait Posture, 39, 1, pp. 265-271, (2014); Rankin G., Stokes M., Reliability of assessment tools in rehabilitation: An illustration of appropriate statistical analyses, Clin Rehabil, 12, 3, pp. 187-199, (1998); Mok K.M., Bahr R., Krosshaug T., Reliability of lower limb biomechanics in two sport-specific sidestep cutting tasks, Sport Biomech, 17, 2, pp. 157-167, (2018); Sankey S.P., Raja Azidin R.M.F., Ma R., Malfait B., Deschamps K., Verschueren S., Et al., How reliable are knee kinematics and kinetics during side-cutting manoeuvres?, Gait Posture., 41, 4, pp. 905-911, (2015); Schreurs M.J., Benjaminse A., Lemmink K.A.P.M., Sharper angle, higher risk? the effect of cutting angle on knee mechanics in invasion sport athletes, J Biomech., 63, pp. 144-150, (2017); Malfait B., Sankey S., Rmfr A., Deschamps K., Vanrenterghem J., Ma R., Et al., How reliable are lower-limb kinematics and kinetics during a drop vertical jump?, Med Sci Sports Exerc., 46, 4, pp. 678-685, (2014); Alenezi F., Herrington L., Jones P., Jones R., The reliability of biomechanical variables collected during single leg squat and landing tasks, J Electromyogr Kinesiol, 24, 5, pp. 718-721, (2014); Griffin L.Y., Agel J., Albohm M.J., Arendt E.A., Dick R.W., Garrett W.E., Et al., Noncontact anterior cruciate ligament injuries: Risk factors and prevention strategies, J Am Acad Orthop Surg, 8, 3, pp. 141-150, (2000); Ng S., Tse M., Kwong P., Fong I., Chan S., Cheung T., Et al., Reliability of the Maximal Step Length Test and Its Correlation with Motor Function in Chronic Stroke Survivors, Biomed Res Int., 20, pp. 1-8, (2018); Cappozzo A., Catani F., Croce Della U., Leardini A., Position and orientation in space of bones during movement: Anatomical frame definition and determination, Clin Biomech, 10, 4, pp. 171-178, (1995); Collins T.D., Ghoussayni S.N., Ewins D.J., Kent J.A., A six degreesof-freedom marker set for gait analysis: Repeatability and comparison with a modified Helen Hayes set, Gait Posture, 30, 2, pp. 173-180, (2009); Jones R.K., Zhang M., Laxton P., Findlow A.H., Liu A., The biomechanical effects of a new design of lateral wedge insole on the knee and ankle during walking, Hum Mov Sci, 32, 4, pp. 596-604, (2013); Jones R.K., Chapman G.J., Parkes M.J., Forsythe L., Felson D.T., The effect of different types of insoles or shoe modifications on medial loading of the knee in persons with medial knee osteoarthritis: A randomised trial, J Orthop Res., 33, 11, pp. 1646-1654, (2015); Woods K., Bishop P., Jones E., Warm-up and stretching in the prevention of muscular injury, Sports Med, 37, 12, pp. 1089-1099, (2007); Bell D.R., Oates D.C., Ma C., Padua D.A., Two-A nd 3-dimensional knee valgus are reduced after an exercise intervention in young adults with demonstrable valgus during squatting, J Athl Train, 48, 4, pp. 442-449, (2013); Myer G.D., Ford K.R., Khoury J., Succop P., Hewett T.E., Development and validation of a clinic-based prediction tool to identify female athletes at high risk for anterior cruciate ligament injury, Am J Sports Med., 38, 10, pp. 2025-2033, (2010); Winter D.A., Biomechanics and motor control of human gait, Motor Control, (2009); Roewer B.D., Ford K.R., Myer G.D., Hewett T.E., The impact"" of force filtering cut-off frequency on the peak knee abduction moment during landing: Artefact or ""artifiction, Br J Sports Med., 48, 6, pp. 464-468, (2012); Grood E.S., Suntay W.J., A joint coordinate system for the clinical description of three-dimensional motions: Application to the knee, J Biomech Eng, 105, 2, pp. 136-144, (1983); Arifin W.N., A Web-based Sample Size Calculator for Reliability Studies, Educ Med J., 10, 3, pp. 67-76, (2018); Koo T.K., Li M.Y., A Guideline of Selecting and Reporting Intraclass Correlation Coefficients for Reliability Research, J Chiropr Med., 15, 2, pp. 155-163, (2016); Coppieters M., Stappaerts K., Janssens K., Jull G., Reliability of detecting onset of pain"" and ""submaximal pain"" during neural provocation testing of the upper quadrant, Physiother Res Int, 7, 3, pp. 146-156, (2002); Denegar C.R., Ball D.W., Assessing Reliability and Precision of Measurement: An Introduction to Intraclass Correlation and Standard Error of Measurement, J Sport Rehabil, 2, 1, pp. 35-42, (1993); Noehren B., Manal K., Davis I., Improving between-day kinematic reliability using a marker placement device, J Orthop Res, 28, 11, pp. 1405-1410, (2010); Irawan D.S., Huoth C., Sinsurin K., Kiratisin P., Vachalathiti R., Richards J., Concurrent Validity and Reliability of Twodimensional Frontal Plane Knee Measurements during Multidirectional Cutting Maneuvers, Int J Sports Phys Ther., 17, 2, pp. 148-155, (2022); Ford K.R., Myer G.D., Hewett T.E., Reliability of landing 3D motion analysis: Implications for longitudinal analyses, Med Sci Sports Exerc, 39, 11, pp. 2021-2028, (2007); Ferber R., McClay Davis I., Williams D.S., Laughton C., A comparison of within-A nd between-day reliability of discrete 3D lower extremity variables in runners, J Orthop Res, 20, 6, pp. 1139-1145, (2002); Kadaba M.P., Ramakrishnan H.K., Wootten M.E., Gainey J., Gorton G., Cochran G.V., Repeatability of kinematic, kinetic, and electromyographic data in normal adult gait, J Orthop Res, 7, 6, pp. 849-860, (1989); Munro A., Herrington L., Carolan M., Reliability of 2-dimensional video assessment of frontal-plane dynamic knee valgus during common athletic screening tasks, J Sport Rehabil., 21, 1, pp. 7-11, (2012); McGinley J.L., Baker R., Wolfe R., Morris M.E., The reliability of three-dimensional kinematic gait measurements: A systematic review, Gait Posture, 29, 3, pp. 360-369, (2009); Bell A.L., Pedersen D.R., Brand R.A., A comparison of the accuracy of several hip center location prediction methods, J Biomech, 23, 6, pp. 617-621, (1990)","A. Alhammad; Medical Rehabilitation Hospital, Ministry of Health, Madinah, Saudi Arabia; email: dr_an1@hotmail.com","","IOS Press BV","10538127","","JBMRF","35964167","English","J. Back Musculoskelet. Rehabil.","Article","Final","All Open Access; Green Open Access","Scopus","2-s2.0-85147046124" "Wang H.; Bao D.-Q.; Fang B.-F.; Li L.","Wang, Hao (55881854300); Bao, Dun-Qiao (23018153700); Fang, Bao-Fu (7102405867); Li, Long (57196178065)","55881854300; 23018153700; 7102405867; 57196178065","Research on locomotion control based on humanoid soccer robot","2008","Journal of Harbin Institute of Technology (New Series)","15","SUPPL. 2","","133","136","3","0","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-57749112017&partnerID=40&md5=4a32d9ea68b232173a190809bfd18a96","School of Computer and Information, Hefei University of Technology, Hefei 230000, China","Wang H., School of Computer and Information, Hefei University of Technology, Hefei 230000, China; Bao D.-Q., School of Computer and Information, Hefei University of Technology, Hefei 230000, China; Fang B.-F., School of Computer and Information, Hefei University of Technology, Hefei 230000, China; Li L., School of Computer and Information, Hefei University of Technology, Hefei 230000, China","In order to control a humanoid soccer robot with a high degree of freedom to get faster and more stable movement, locomotion control should be designed well which includes gait planning, motor planning and state detection. The gait planning plans accelerated and decelerate walking period and offset angle in each cycle. Motor planning tries to get current stance by programming smooth joint motion. The state detection is taken as events trigger which driving the gait planning or handling abnormal state just like falling down, joint mistake etc. The humanoid robot system simulation RoboCup 3D league is a novel experiment platform for researchers of humanoid robot behavior. It is very cheap and easy to optimize the humanoid algorithms and apply results in real humanoid robot. The proposed control has been tested in RoboCup 3D server platform. The result on RoboCup simulation team-HfutEngine3D shows this control method's validity.","Gait planning; Humanoid soccer robot; Locomotion control; Simulation","Biomechanics; Biped locomotion; Motors; Robot applications; Robotics; Robots; Abnormal states; Control methods; Gait planning; High Degree of freedoms; Humanoid robots; Humanoid soccer robot; Joint motions; Locomotion control; Motor planning; Offset angles; RoboCup; Robocup simulations; Server platforms; Simulation; State detections; Intelligent robots","Kajita S., Tani K., Experimental study of biped dynamic walking, IEEE Control Systems, 16, 1, pp. 13-19, (1996); Kajita S., Humanoid Robots, pp. 20-67, (2007); Tedrake R., Zhang T.W., Seung H.S., Stochastic policy gradient reinforcement learning on a simple 3D biped, Proceedings of 2004 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS2004), pp. 2849-2854; Guestrin C., Venkataraman S., Koller D., Context-specific multiagent coordination and planning with factored MDPs, Proc. 8th Nation. Conf. on Artificial Intelligence, (2002); Kok J.R., Spaan M.T.J., Vlassis N., Non-communicative multi-robot coordination in dynamic environments, Robotics and Autonomous Systems, 50, pp. 99-114, (2005); An Z.-L., Yu J.-J., Wang H., Robocup simulation league goalie design, Proceedings of 1st Austria Open of RoboCup, pp. 77-87, (2003); Fang B.-F., Wang H., Liu J., Su C.-W., Team strategy of HfutAgent, Proceedings of 2003 Master China RoboCup, pp. 1-5, (2003)","H. Wang; School of Computer and Information, Hefei University of Technology, Hefei 230000, China; email: jsjxwangh@hfut.edu.cn","","","10059113","","JHITE","","English","J. Harbin Inst. Technol.","Article","Final","","Scopus","2-s2.0-57749112017" "Merino-Muñoz P.; Villaseca-Vicuña R.; Hermosilla-Palma F.; Teixeira F.G.; Miarka B.; Brito C.; Bustamante-Garrido A.; Cerda-Kohler H.; Arriagada-Tarifeño D.; Pérez-Contreras J.; Aedo-Muñoz E.","Merino-Muñoz, Pablo (57221328367); Villaseca-Vicuña, Rodrigo (57222061212); Hermosilla-Palma, Felipe (57214092793); Teixeira, Felipe Guimarães (55516341800); Miarka, Bianca (37081636300); Brito, Ciro (37058458300); Bustamante-Garrido, Alejandro (57193238400); Cerda-Kohler, Hugo (56532510400); Arriagada-Tarifeño, David (57266544400); Pérez-Contreras, Jorge (57221334278); Aedo-Muñoz, Esteban (57202025612)","57221328367; 57222061212; 57214092793; 55516341800; 37081636300; 37058458300; 57193238400; 56532510400; 57266544400; 57221334278; 57202025612","Proposal of a biomechanical model of the chest technique in soccer volleyball; [Propuesta de un modelo biomecánico de la técnica de pecho en futvoley]","2024","Retos","51","","","741","748","7","0","10.47197/RETOS.V51.98876","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85178158049&doi=10.47197%2fRETOS.V51.98876&partnerID=40&md5=7bdba042d18f618f43428b52b7822698","Universidade Federal do Rio de Janeiro, Brazil; Universidad Adventista de Chile, Chile; Universidad Católica Silva Henríquez, Chile; Universidad Autónoma de Chile, Chile; Universidade Estácio de Sá, Brazil; Universidad Federal de Juiz de Fora, Brazil; Universidad de Santiago de Chile, Chile; Universidad Metropolitana de Ciencias de la Educación, Chile; Universidad Santo Tomás, Chile; Instituto Nacional del Deporte de Chile, Chile; Clínica MEDS, Chile","Merino-Muñoz P., Universidade Federal do Rio de Janeiro, Brazil, Universidad Adventista de Chile, Chile, Universidad de Santiago de Chile, Chile; Villaseca-Vicuña R., Universidad Católica Silva Henríquez, Chile; Hermosilla-Palma F., Universidad Autónoma de Chile, Chile; Teixeira F.G., Universidade Estácio de Sá, Brazil; Miarka B., Universidade Federal do Rio de Janeiro, Brazil; Brito C., Universidad Federal de Juiz de Fora, Brazil, Universidad de Santiago de Chile, Chile; Bustamante-Garrido A., Universidad Santo Tomás, Chile, Instituto Nacional del Deporte de Chile, Chile; Cerda-Kohler H., Universidade Federal do Rio de Janeiro, Brazil, Universidad Metropolitana de Ciencias de la Educación, Chile, Clínica MEDS, Chile; Arriagada-Tarifeño D., Universidad de Santiago de Chile, Chile; Pérez-Contreras J., Universidad Santo Tomás, Chile; Aedo-Muñoz E., Universidade Federal do Rio de Janeiro, Brazil, Universidad de Santiago de Chile, Chile, Universidad Metropolitana de Ciencias de la Educación, Chile, Instituto Nacional del Deporte de Chile, Chile","Context: The biomechanical analysis of sports techniques facilitates performance optimization, promotes proper technical execution, and helps to identify injury risk factors. Objective: To propose a biomechanical model of the chest technique in footvolley, indicating kinematic indicators for its evaluation. Methods: A case study with a descriptive scope was conducted through a participant with 20 years of experience in footvolley. The chest technique in footvolley was captured through video-photogrammetry using a high-speed camera (240 Hz). The analysis was carried out using the Kinovea® sports analysis software. The phases of the sports technique were determined through a previously used proposal: a) The general performance objective of the technique (GPO); b) The mechanical purposes (MP) of each phase, which refers to the main mechanical characteristic to be achieved in each phase; c) Biomechanical objec-tives (BO), corresponding to the kinematic (KI) and kinetic indicators (KnI) derived from the MP. Results: The technique was divided into the phases of Approach, Preparation, Impulse, and Follow-up. In each phase, the GPO of the technique and the MPs and BOs were described. Practical applications: The biomechanical proposal based on GPO, MP, and KI allows for the understanding of this sports technique, facilitating its analysis, teaching, and performance optimization. © 2024 Federacion Espanola de Docentes de Educacion Fisica. All rights reserved.","Biomechanics; Footvolley; Kinematics","","Aedo-Munoz E., Análisis de movimiento en videofotogrametría, Rehabilitación deportiva basada en el trabajo multidisciplinar, (2018); Aedo-Munoz E., Abarca-Reyes V., Torres-Moreno M.-J., Bascunan-Mosqueira R., Brito C., Miarka B., Juan J. C.-S., Sanchez-Ramirez C., Poblete-Galvez C., Proposal of a Technical Model of Soccer Kicking: A systematic review of kinematic and kinetic variables, MHSalud: Revista en Ciencias del Movimiento Humano y Salud, 17, 2, (2020); Aedo-Munoz E. A., Bustamante-Garrido A. F., Conceptualización de la biomecánica deportiva y biomecánica de la educación física, Revista Educación Física Chile, 270, pp. 63-68, (2022); Aedo-Munoz E., Guarda A. R., Gamboa I. R., Zarate N. R., Reyes C. R., Aedo-Munoz N., Perez D. V., Tarifeno D. A., Argothy R., Salazar J. S., Miarka B., Brito C. J., Kinematic variations of uphill in mountain bikers, Retos, 40, pp. 257-263, (2020); Aedo-Munoz E., Martinez-Catalan R., Miarka B., Merino-Munoz P., Brito C., Hermosilla Palma F., Perez Contreras J., Cinemática de pateo con empeine en jugadores profesionales varones de futsal chilenos: Propuesta de un modelo cinemático, Retos, 47, pp. 933-940, (2023); Alves A. T., Oliveira D. M., Valenca J. G. S., Macedo O. G. De, Matheus J. P. C., Lesions in footvolley athletes, Revista Brasileira de Ciencias Do Esporte, 37, 2, pp. 185-190, (2015); Barillas S. R., Oliver J. L., Lloyd R. S., Pedley J. S., Cueing the youth athlete during strength and conditioning: A review and practical application, Strength & Conditioning Journal, 43, 3, pp. 29-42, (2021); Barrios J., Ranzola A., Manual para el deporte de iniciación y desarrollo, (1999); Bermejo J., Revisión del concepto de técnica deportiva desde la perspectiva biomecánica del movimiento, Revista Digital de Educación Física, 25, pp. 45-59, (2013); Borges Carvalho L., Validação de um instrumento observacional de padrões táticos no futevôlei [Universidade de Brasília], (2021); Burgos-Jara C., Cerda-Kohler H., Aedo-Munoz E., Miarka B., Eccentric Resistance Training: A Methodological Proposal of Eccentric Muscle Exercise Classification Based on Exercise Complexity, Training Objectives, Methods, and Intensity, Applied Sciences (Switzerland), 13, 13, (2023); Castro V. H., Moraes R. S. B., Matheus J. P. C., Garcia P. A., Leal J. C., Macedo O. G., Footvolley athletes may have an imbalance in the muscles that move the knee: preliminary findings, Retos, 46, pp. 826-832, (2022); Cerda-Kohler H., Aedo-Munoz E., Solar I., Ponce A., Ponce J. C., Haichelis D., Bueno-Buker D., Tejo J., Lineamientos Unidad de Ciencias Aplicadas al Deporte 2022-2028: El qué, el cómo y el por qué hacemos lo que hacemos (Primera), (2022); Diener-Gonzalez L., Aedo-Munoz E., Indicadores cinemáticos del salto en extensión, Arrancada, 17, 30, pp. 75-83, (2017); Fuentes A., Martinez L., Aedo-Munoz E., Brito C., Miarka B., Arriagada-Tarifeno D., Is there any relation between the position of cycling and the appearance of lower pain? A systematized review, Retos, 43, pp. 651-659, (2022); Giatsis G., Panoutsakopoulos V., Kollias I. A., Biomechanical differences of arm swing countermovement jumps on sand and rigid surface performed by elite beach volleyball players, Journal of Sports Sciences, 36, 9, pp. 997-1008, (2018); Grazioli R., Inacio M., Nunes N., Villeroy L., Brazilian footvolley: A displacement screening study of a professional national match, International Journal of Sports Science, 8, 2, pp. 63-66, (2018); Ibanez J., Martin E., Zamarro J., Capitulo II - Cinemática, Física, (1989); Morante J. C., Izquierdo M., Tecnica deportiva, modelos tecnicos y estilo personal, Biomecánica y bases neuromusculares de la actividad física y el deporte, (2008); Moreno de la Fuente J., Rojas-Briceno L., Escalona-Riquelme J., Merino-Munoz P., Cerda-Kohler H., Miarka B., Brito C., Arriagada-Tarifeno D., Aedo-Munoz E., Modelo técnico del push de empuje en el hockey sobre césped. Una propuesta de análisis, Retos, 45, pp. 318-325, (2022); Soares W. D., Antunes T. P. E., Moraes Junior W. P., Almeida J. L. S., Aspectos cinético-funcionais associados a dor lombar em praticantes de futevôlei, Revista Brasileira De Futsal E Futebol, 13, 52, pp. 185-192, (2021); Schollhorn W. I., Rizzi N., Slapsinskaite-Dackeviciene A., Leite N., Always Pay Attention to Which Model of Motor Learning You Are Using, International Journal of Environmental Research and Public Health, 19, 2, (2022); Taylor J. A., Ivry R. B., The role of strategies in motor learning, Annals of the New York Academy of Sciences, 1251, 1, pp. 1-12, (2012); Winkelman N. C., Clark K. P., Ryan L. J., Experience level influences the effect of attentional focus on sprint performance, Human Movement Science, 52, pp. 84-95, (2017)","E. Aedo-Muñoz; Universidade Federal do Rio de Janeiro, Brazil; email: esteban.aedo@usach.cl","","Federacion Espanola de Docentes de Educacion Fisica","15791726","","","","Spanish","Retos","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85178158049" "Reisi J.; Lenjannejadian S.; Clemente F.; Clark C.C.T.","Reisi, Jalil (56904213800); Lenjannejadian, Shahram (57210706161); Clemente, Filipe (57209913336); Clark, Cain Craig Truman (57190167735)","56904213800; 57210706161; 57209913336; 57190167735","Introducing an activity-based balance index for soccer players: A validity and reliability study","2021","Asian Journal of Sports Medicine","12","2","e108903","","","","0","10.5812/asjsm.108903","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85108554289&doi=10.5812%2fasjsm.108903&partnerID=40&md5=aeaca866c88805d3f9cd60b64e87cc57","Department of Exercise Physiology, Faculty of Sport Sciences, University of Isfahan, Isfahan, Iran; Department of Biomechanics, Faculty of Sport Sciences, University of Isfahan, Isfahan, Iran; Escola Superior Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Rua Escola Industrial e Comercial de Nun’Alvares, Covilha, Portugal; Faculty of Health and Life Sciences, Coventry University, Coventry, United Kingdom","Reisi J., Department of Exercise Physiology, Faculty of Sport Sciences, University of Isfahan, Isfahan, Iran; Lenjannejadian S., Department of Biomechanics, Faculty of Sport Sciences, University of Isfahan, Isfahan, Iran; Clemente F., Escola Superior Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Rua Escola Industrial e Comercial de Nun’Alvares, Covilha, Portugal; Clark C.C.T., Faculty of Health and Life Sciences, Coventry University, Coventry, United Kingdom","Objectives: The aim of this study was to evaluate the validity and reliability of introducing a new activity-based balance index using a triaxial accelerometer during activity. Methods: Twenty seven soccer players (age: 14.5 ± 0.4 years old, body mass: 58.3 ± 9.3 kg, height: 172 ± 8 cm) who participated in the national premier league were recruited. The participants were tested for their balance, activity, and skill in four tests: (I) one leg stance; (II) dynamic Y balance; (III) running; and (IV) dribbling slalom. The acceleration of the body was recorded using an accelerometer during those tests. By processing acceleration data, a new activity-based balance index (ABI) was calculated based on the velocity, acceleration, and position index of soccer players. Using intra-class correlation coefficients (ICC), reliability was calculated. Results: Reliability was high (ICC = 0.87-0.89; 95% CI = 0.77-0.93) in calculating ABI for the three activities performed in the tests. A significant positive correlation between ABI and both static and dynamic balance scores (r = 0.62, P = 0.002) was observed. Further-more, negative correlation was found significantly between ABI and dribbling scores (r =-0.61, P = 0.026) and Y Balance test (r = 0.6, P = 0.002). Conclusions: In conclusion, the introduced ABI demonstrates great potential to determine balance and skill scores based on accelerometer-based measures. © 2020, Author(s).","Acceleration; Biomechanical Phenomena; Football; Performance; Postural Balance","","Meriam JL, Kraige LG., Engineering mechanics: dynamics, (2012); LeVeau BF., Biomechanics of human motion: basics and beyond for the health professions, (2010); Lenjannejadian S, Reisi J, Salimi M, Introducing a New Activity-Based Balance Index Using Accelerometer Data and Evaluat-ing It as a Predictor of Skill Level among Elite Junior Soccer Players, The 13th Conference of the International Sports Engineering Association, (2020); Seimetz C, Tan D, Katayama R, Lockhart T., A comparison between methods of measuring postrual stability: force plates ver-sus accelerometers, Biomed Sci Instrum, 48, pp. 386-392, (2012); Bressel E, Yonker JC, Kras J, Heath EM., Comparison of static and dynamic balance in female collegiate soccer, basketball, and gym-nastics athletes, J Athl Train, 42, 1, pp. 42-46, (2007); Hilbun AL., Strategies of Balancing: Regulation of Posture as a Complex Phenomenon, Electronic Theses and Dissertations, (2016); Matsuda S, Demura S, Demura T., Examining differences between center of pressure sway in one-legged and two-legged stances for soccer players and typical adults, Percept Mot Skills, 110, 3, pp. 751-760, (2010); Thompson LA, Badache M, Cale S, Behera L, Zhang N., Balance Performance as Observed by Center-of-Pressure Parameter Characteristics in Male Soccer Athletes and Non-Athletes, Sports (Basel), 5, 4, (2017); Winter DA., Human balance and posture control during stand-ing and walking, Gait Posture, 3, 4, pp. 193-214, (1995); Huurnink A, Fransz DP, Kingma I, van Dieen JH., Comparison of a laboratory grade force platform with a Nintendo Wii Balance Board on measurement of postural control in single-leg stance balance tasks, J Biomech, 46, 7, pp. 1392-1395, (2013); Noamani A, Nazarahari M, Lewicke J, Vette AH, Rouhani H., Validity of using wearable inertial sensors for assessing the dynamics of standing balance, Med Eng Phys, 77, pp. 53-59, (2020); Dewan BM, Roger James C, Kumar NA, Sawyer SF., Kinematic Validation of Postural Sway Measured by Biodex Biosway (Force Plate) and SWAY Balance (Accelerometer) Technology, Biomed Res Int, 2019, (2019); Mayagoitia RE, Nene AV, Veltink PH., Accelerometer and rate gyro-scope measurement of kinematics: an inexpensive alternative to optical motion analysis systems, J Biomech, 35, 4, pp. 537-542, (2002); Howell D, Osternig L, Chou LS., Monitoring recovery of gait balance control following concussion using an accelerometer, J Biomech, 48, 12, pp. 3364-3368, (2015); Bourke AK, van de Ven P, Gamble M, O'Connor R, Murphy K, Bo-gan E, Et al., Evaluation of waist-mounted tri-axial accelerom-eter based fall-detection algorithms during scripted and con-tinuous unscripted activities, J Biomech, 43, 15, pp. 3051-3057, (2010); Clark CC, Barnes CM, Holton M, Summers HD, Stratton G., SlamTracker Accuracy under Static and Controlled Movement Conditions, Sport Sci Rev, 25, 5-6, pp. 374-383, (2016); Castagna C, D'Ottavio S, Abt G., Activity profile of young soccer players during actual match play, J Strength Cond Res, 17, 4, pp. 775-780, (2003); Kinugasa T, Kilding AE., A comparison of post-match recovery strategies in youth soccer players, J Strength Cond Res, 23, 5, pp. 1402-1407, (2009); Soderman K, Alfredson H, Pietila T, Werner S., Risk factors for leg injuries in female soccer players: a prospective investigation during one out-door season, Knee Surg Sports Traumatol Arthrosc, 9, 5, pp. 313-321, (2001); Alentorn-Geli E, Myer GD, Silvers HJ, Samitier G, Romero D, Lazaro-Haro C, Et al., Prevention of non-contact anterior cruciate ligament injuries in soccer players. Part 2: a review of prevention programs aimed to modify risk factors and to reduce injury rates, Knee Surg Sports Traumatol Arthrosc, 17, 8, pp. 859-879, (2009); Murphy DF, Connolly DA, Beynnon BD., Risk factors for lower extremity injury: a review of the literature, Br J Sports Med, 37, 1, pp. 13-29, (2003); Ricotti L, Ravaschio A., Break dance significantly increases static balance in 9 years-old soccer players, Gait Posture, 33, 3, pp. 462-465, (2011); Sinclair J, Hobbs SJ, Taylor PJ, Currigan G, Greenhalgh A., The influ-ence of different force and pressure measuring transducers on lower extremity kinematics measured during running, J Appl Biomech, 30, 1, pp. 166-172, (2014); Butler RJ, Southers C, Gorman PP, Kiesel KB, Plisky PJ., Differences in soccer players’ dynamic balance across levels of competition, J Athl Train, 47, 6, pp. 616-620, (2012); Gelen E., Acute effects of different warm-up methods on sprint, slalom dribbling, and penalty kick performance in soccer players, J Strength Cond Res, 24, 4, pp. 950-956, (2010); Rabbani A, Kargarfard M, Twist C., Reliability and Validity of a Sub-maximal Warm-up Test for Monitoring Training Status in Profes-sional Soccer Players, J Strength Cond Res, 32, 2, pp. 326-333, (2018); Dolan K., Reactive agility, core strength, balance, and soccer performance, (2013); Reilly T, Williams AM, Nevill A, Franks A., A multidisciplinary approach to talent identification in soccer, J Sports Sci, 18, 9, pp. 695-702, (2000); Re AH, Correa UC, Bohme MT., Anthropometric characteristics and motor skills in talent selection and development in indoor soccer, Per-cept Mot Skills, 110, 3, pp. 916-930, (2010); Oliver GD, Di Brezzo R., Functional balance training in collegiate women athletes, J Strength Cond Res, 23, 7, pp. 2124-2129, (2009); Gabbett T, Benton D., Reactive agility of rugby league players, J Sci Med Sport, 12, 1, pp. 212-214, (2009); Paillard T, Noe F, Riviere T, Marion V, Montoya R, Dupui P., Postural performance and strategy in the unipedal stance of soccer players at different levels of competition, J Athl Train, 41, 2, pp. 172-176, (2006); Matsuda S, Demura S, Nagasawa Y., Static one-legged balance in soccer players during use of a lifted leg, Percept Mot Skills, 111, 1, pp. 167-177, (2010); Clark CC, Barnes CM, Stratton G, McNarry MA, Mackintosh KA, Summers HD., A Review of Emerging Analytical Techniques for Objective Physical Activity Measurement in Humans, Sports Med, 47, 3, pp. 439-447, (2017)","J. Reisi; Department of Exercise Physiology, Faculty of Sport Sciences, University of Isfahan, Isfahan, Iran; email: jalil_reisi@yahoo.com","","Kowsar Medical Institute","2008000X","","","","English","Asian J. Sports Med.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85108554289" "Hewett T.E.; Ford K.R.; Xu Y.; Khoury J.; Myer G.D.","Hewett, Timothy E. (7005201943); Ford, Kevin R. (7102539333); Xu, Yingying (35332961800); Khoury, Jane (35427121300); Myer, Gregory D. (6701852696)","7005201943; 7102539333; 35332961800; 35427121300; 6701852696","Utilization of ACL injury biomechanical and neuromuscular risk profile analysis to determine the effectiveness of neuromuscular training: A prospective cohort double blind randomized controlled trial","2015","Orthopaedic Journal of Sports Medicine","3","7","","1","","","0","10.1177/2325967115S00030","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85000454223&doi=10.1177%2f2325967115S00030&partnerID=40&md5=eaf14b8f7e2b2a0115557021a96f6e1a","The Ohio State University Sports Health and Performance Institute, Columbus, OH, United States; High Point University, High Point, NC, United States; Cincinnati Children’s Hospital, Cincinnati, OH, United States; Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States","Hewett T.E., The Ohio State University Sports Health and Performance Institute, Columbus, OH, United States; Ford K.R., High Point University, High Point, NC, United States; Xu Y., Cincinnati Children’s Hospital, Cincinnati, OH, United States; Khoury J., Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States; Myer G.D., Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States","Objectives: Over 125,000 anterior cruciate ligament (ACL) injuries occur each year in the United States. External loads on the knee in the frontal plane, specifically the knee abduction moment (KAM), predict future ACL injury with high sensitivity and specificity. The purpose of this randomized controlled trial (RCT) was to determine if biomechanical and neuromuscular factors could be used to characterize athletes by distinct factor profiles, to examine if neuromuscular training (NMT) would decrease the potential risk factors, and if NMT would preferentially benefit athletes that exhibited specific risk profiles. The hypotheses tested were: 1) a priori chosen biomechanical and neuromuscular factors would characterize subjects into distinct at-risk profiles, 2) NMT would decrease biomechanical and neuromuscular factors related to increased injury risk and 3) the decrease in these biomechanical and neuromuscular factors would be greater in those athletes characterized by the overall higher risk profiles. Methods: A total of 624 female athletes from 52 basketball, soccer and volleyball teams participated and were screened prior to their competitive season. During the pre-season testing, the athletes performed 3 different types of tasks for which biomechanical measures were taken: 1) drop vertical jump (DVJ), 2) single leg drop (SLD), and 3) single leg cross drop (SCD) landings. Using data from these tasks a latent profile analysis (LPA) was conducted to identify distinct profiles based on pre-intervention biomechanical and neuromuscular measures. As a validation, we examined whether the profile membership was significant predictor of KAM. Analysis of Co-Variance (ANCOVA) was used to examine treatment effects of NMT on biomechanical and neuromuscular measures in the 375 athletes who completed both pre- and post-intervention tasks. Differences were considered statistically significant at p<0.05. Results: LPA using six pre-intervention biomechanical measures selected a priori resulted in three distinct profiles. Athletes in profiles II and III had significant higher KAM, compared to Profile I. The Core/Trunk-based NMT significantly increased hip external rotation moments and moment impulse and increased peak trunk flexion and decreased extension. In addition, the treatment effect of NMT varied by pre-intervention risk profile. Athletes with pre-intervention risk Profile II and III (higher risk) had a more significant treatment effect of NMT than Profile I. Conclusion: This is the first study to use LPA analysis of biomechanical landing data to create KAM and potentially ACL injury risk profiles. The LPA of multiple biomechanical and neuromuscular measures identified three distinct risk groups; associated with differences in peak KAM Analysis of the RCT showed that NMT significantly increased hip external rotation moments and moment impulse and increased peak trunk flexion and decreased extension, and that alterations in risk factors are different across risk profile group, with higher risk groups showing an overall significant improvement in KAM. These findings show the existence of discernable groups of athletes that are more appropriate for NMT intervention; further study is needed in even larger cohorts to investigate ACL injury as our primary outcome variable. © The Author(s) 2015.","","anterior cruciate ligament injury; athlete; athletic performance; basketball; biomechanics; cohort analysis; controlled study; double blind procedure; drop vertical jump; female; human; neuromuscular function; Note; priority journal; prospective study; randomized controlled trial; risk factor; single leg cross drop; single leg drop; soccer; volleyball","","","","SAGE Publications Ltd","23259671","","","","English","Orthop. J. Sports Med.","Note","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85000454223" "Damavandi M.; Mahendrarajah L.; Dixon P.C.; DeMont R.","Damavandi, Mohsen (26534090400); Mahendrarajah, Lishani (57215184331); Dixon, Philippe C. (35784144900); DeMont, Richard (6602112639)","26534090400; 57215184331; 35784144900; 6602112639","Knee joint kinematics and neuromuscular responses in female athletes during and after multi-directional perturbations","2020","Human Movement Science","70","","102596","","","","0","10.1016/j.humov.2020.102596","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85080022925&doi=10.1016%2fj.humov.2020.102596&partnerID=40&md5=fe68c8a1bcfd1da1c977b9125afb3fe3","Department of Health, Kinesiology and Applied Physiology, Concordia University, Montreal, QC, Canada; Faculty of Sport Sciences, Hakim Sabzevari University, Sabzevar, Iran; Department of Environmental Health, T.H. Chan School of Public Health, Harvard University, Boston, MA, United States","Damavandi M., Department of Health, Kinesiology and Applied Physiology, Concordia University, Montreal, QC, Canada, Faculty of Sport Sciences, Hakim Sabzevari University, Sabzevar, Iran; Mahendrarajah L., Department of Health, Kinesiology and Applied Physiology, Concordia University, Montreal, QC, Canada; Dixon P.C., Department of Environmental Health, T.H. Chan School of Public Health, Harvard University, Boston, MA, United States; DeMont R., Department of Health, Kinesiology and Applied Physiology, Concordia University, Montreal, QC, Canada","The purpose of this study was to investigate weight-bearing knee joint kinematic and neuromuscular responses during lateral, posterior, rotational, and combination (simultaneous lateral, posterior, and rotational motions) perturbations and post-perturbations phases in 30° flexed-knee and straight-knee conditions. Thirteen healthy female athletes participated. Knee joint angles and muscle activity of vastus lateralis (VL), vastus medialis (VM), biceps femoris (BF), semitendinosus (ST), lateral gastrocnemius (LG), and medial gastrocnemius (MD) muscles were computed. Knee abducted during lateral perturbations, whereas it adducted during the other perturbations. It was internally rotated during flexed-knee and externally rotated during straight-knee perturbations and post-perturbations. VL and VM's mean and maximum activities during flexed-knee perturbations were greater than those of straight-knee condition. BF's mean activities were greater during flexed-knee perturbations compared with straight-knee condition, while its maximum activities observed during combination perturbations. ST's maximum activities during combination perturbations were greatest compared with the other perturbations. LG and MG's activities were greater during straight-knee conditions. Compared with the perturbation phase, the mean and maximum muscles' activities were significantly greater during post-perturbations. The time of onset of maximum muscle activity showed a distinctive pattern among the perturbations and phases. The perturbation direction is an important variable which induces individualized knee kinematic and neuromuscular response. © 2020 Elsevier B.V.","Anterior cruciate ligament (ACL); EMG; Joint stability; Kinematics; Lower limb","Adolescent; Athletes; Basketball; Biomechanical Phenomena; Electromyography; Female; Humans; Knee Joint; Muscle Contraction; Muscle, Skeletal; Range of Motion, Articular; Rotation; Soccer; Young Adult; adult; anterior cruciate ligament; article; athlete; biceps femoris muscle; clinical article; female; gastrocnemius muscle; human; joint stability; kinematics; motion; muscle function; semitendinous muscle; vastus lateralis muscle; vastus medialis muscle; weight bearing; adolescent; basketball; biomechanics; electromyography; joint characteristics and functions; knee; muscle contraction; physiology; rotation; skeletal muscle; soccer; young adult","Allum J.H.J., Huwiler M., Honegger F., Prior intention to mimic a balance disorder: Does central set influence normal balance-correcting responses, Gait & Posture, 4, pp. 39-51, (1996); Andrews J., Mcleod W.D., Ward T., Howard K., The cutting mechanism, American Orthopaedic Society for Sports Medicine, 5, 3, pp. 111-121, (1977); Benedetti M.G., Beghi E., De Tanti A., Cappozzo A., Basaglia N., Cutti A.G., Ferrarin M., SIAMOC position paper on gait analysis in clinical practice: General requirements, methods and appropriateness. 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Damavandi; Department of Health, Kinesiology and Applied Physiology, Concordia University, Montreal, Canada; email: mohsen.damavandi@concordia.ca","","Elsevier B.V.","01679457","","HMSCD","32217214","English","Hum. Mov. Sci.","Article","Final","","Scopus","2-s2.0-85080022925" "Wang B.; Zhang Y.","Wang, Bihan (57814040900); Zhang, Yu (57219707021)","57814040900; 57219707021","APPLICATION OF FUNCTIONAL TRAINING IN SOCCER FITNESS; [APLICAÇÃO DO TREINAMENTO FUNCIONAL NA APTIDÃO FÍSICA DO FUTEBOL]; [APLICACIÓN DEL ENTRENAMIENTO FUNCIONAL EN LA PREPARACIÓN FÍSICA DEL FÚTBOL]","2023","Revista Brasileira de Medicina do Esporte","29","","e2022_0259","","","","0","10.1590/1517-8692202329012022_0259","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85134655534&doi=10.1590%2f1517-8692202329012022_0259&partnerID=40&md5=5325966c72a2fd10a4f918218a3d6b64","Hunan Normal University, College of Physical Education, Hunan, Changsha, China","Wang B., Hunan Normal University, College of Physical Education, Hunan, Changsha, China; Zhang Y., Hunan Normal University, College of Physical Education, Hunan, Changsha, China","Introduction: Although Chinese soccer has experienced many updates in its methods, there is still a large gap in players’ physical endurance compared to the world powers. Therefore, strengthening soccer players’ physical endurance through specific training methods is important in optimizing current performance. Objective: Study the application of functional training in soccer players’ physical conditioning. Methods: 20 junior soccer physical education student-athletes in colleges and universities were selected as the research object. The global functional training was divided into three stages: practice, adaptation, and promotion. Data were compared, integrated, and analyzed before and after the intervention. Results: Conducting targeted functional training for soccer players can effectively increase athletes’ physical endurance, reducing sports injuries and improving overall fitness scores at the technical and stability level. Conclusion: From the research of this article, it can be seen that there is a lack of physical fitness and technical strength in Chinese soccer today. The performance of targeted functional training is relevant and should be applied to soccer training. Level of evidence II; Therapeutic studies-investigation of treatment outcomes. © 2023, Redprint Editora Ltda. All rights reserved.","Endurance Training; Physical Education and Training; Soccer","adaptation; adult; Article; athlete; biomechanics; endurance; endurance training; exercise; exercise intensity; female; fitness; functional training; human; male; outcome assessment; physical activity; physical education; resistance training; shoulder flexibility; soccer player; sport injury; student athlete; symbiosis; training; young adult","Ivarsson A, Stenling A, Fallby J, Johnson U., The predictive ability of the talent development environment on youth elite football players’ well-being: A person-centered approach, JSEP, 16, pp. 15-23, (2014); Sparks M, Coetzee B, Gabbett JT., Variations in high-intensity running and fatigue during semi-professional soccer matches, International Int. J Perform Anal Sport, 16, 1, pp. 122-132, (2016); Lockie RG, Jalilvand F, Moreno MR, Orjalo AJ, Risso FG, Nimphius S., Yo-yo intermittent recovery test level 2 and its relationship with other typical soccer field tests in female collegiate soccer players, J Strength Cond Res, 31, 10, pp. 2667-2677, (2017); Hogarth LW, Burkett BJ, McKean MR., Activity profiles and physiological responses of representative tag football players in relation to playing position and physical fitness, PLoS One, 10, 12, (2015); De Hoyo M, Sanudo B, Carrasco L, Mateo-Cortes J, Dominguez-Cobo S, Fernandes O, Et al., Effects of 10-week eccentric overload training on kinetic parameters during change of direction in football players, J Sports Sci, 34, 14, pp. 1380-1387, (2016); Muscella A, Vetrugno C, Spedicato M, Stefano E, Marsigliante S., The effects of training on hormonal concentrations in young soccer players, J Cell Physiol, 62, 4, pp. 1-9, (2019)","Y. Zhang; Hunan Normal University, College of Physical Education, Changsha, Hunan, China; email: zhangyu1978@hunnu.edu.cn","","Redprint Editora Ltda","15178692","","RBMEB","","English","Rev. Bras. Med. Esporte","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85134655534" "Dos Santos L.D.; Pereira C.A.M.; Neto R.B.; Alonso A.C.; Greve J.M.D.","Dos Santos, Leandro Dias (58120190400); Pereira, César Augusto Martins (23395308100); Neto, Raul Bolligner (59104682700); Alonso, Angélica Castilho (23476429900); Greve, Júlia Maria D’Andrea (7103127263)","58120190400; 23395308100; 59104682700; 23476429900; 7103127263","EVALUATION OF ANKLE MOVEMENTS ON A SUDDEN INVERSION PLATFORM; [AVALIAÇÃO DOS MOVIMENTOS DO TORNOZELO NA PLATAFORMA DE INVERSÃO SÚBITA]; [EVALUACIÓN DE LOS MOVIMIENTOS DEL TOBILLO EN LA PLATAFORMA DE INVERSIÓN SÚBITA]","2023","Revista Brasileira de Medicina do Esporte","29","","e2022_0139","","","","0","10.1590/1517-8692202329022022_0139i","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85149028058&doi=10.1590%2f1517-8692202329022022_0139i&partnerID=40&md5=a1669f01f9f76c8315daa7c3144d3747","Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, SP, São Paulo, Brazil; Physical Therapy Department of the São Bernardo Futebol Clube, SP, São Bernardo do Campo, Brazil","Dos Santos L.D., Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, SP, São Paulo, Brazil, Physical Therapy Department of the São Bernardo Futebol Clube, SP, São Bernardo do Campo, Brazil; Pereira C.A.M., Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, SP, São Paulo, Brazil; Neto R.B., Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, SP, São Paulo, Brazil; Alonso A.C., Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, SP, São Paulo, Brazil; Greve J.M.D., Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, SP, São Paulo, Brazil","Introduction: Ankle sprains are frequent in sports activities and can lead to joint instability with clinical and performance consequences. Sudden ankle inversion platforms have been used to study the mechanism of ankle sprain. Objectives: To test a static platform that simulates the movement of ankle sprain (sudden inversion) in soccer players. Methods: A platform was developed to perform the sudden movement of an ankle sprain dissociated in three axes: inversion, plantar flexion, and medial rotation. A computer program was also created to read the angular velocity and the time to reach the maximum amplitude of the three axes of movement, synchronized with the platform movements. Thirty soccer players without ankle sprains were evaluated on the sudden inversion platform. Each athlete performed 10 randomly initiated tests, with five per leg. Results: There was no statistical difference in angular velocity or time to reach maximum range of motion of plantar flexion and medial rotation between the tests. During the tests, the angular velocity of the inversion increased. Conclusion: The sudden static platform evaluated the movements performed by the ankle during the sprain reliably in the 10 tests with no difference in the mechanical behavior. Level of evidence I; Therapeutic studies-Investigation of treatment outcomes. © 2023, Redprint Editora Ltda. All rights reserved.","Ankle; Athletes; Soccer; Supplies; Youth","adolescent; adult; ankle; ankle angle; ankle movement; ankle plantarflexion angle; ankle sprain; Article; athlete; biomechanics; control system; human; human experiment; juvenile; male; musculoskeletal function; musculoskeletal system parameters; outcome assessment; physical activity; physiotherapy; range of motion; soccer player; software; treatment outcome; young adult","Feger M, Donavan L, Hart J, Hertel J., Lower Extremity Muscle Activation in Patients with or Without Chronic Ankle Instability During Walking, J Athl Train, 50, pp. 350-357, (2015); Lin CW, Delahunt E, King E., Neuromuscular Training for Chronic Ankle Instability, Phys Ther, 92, 27, pp. 987-991, (2012); Kondo H, Someya F., Effects of ankle eversion taping using kinesiology tape in a patient with ankle inversion sprain, J. Phys. Ther. Sci, 28, pp. 708-710, (2016); Forestier N, Terrier R., Peroneous reaction time measurement in unipodal stance for two different destabilization axes, Clin Biomech, 26, pp. 766-771, (2011); Lee S, Lee J., Effects of ankle eversion taping using kinesiology tape in a patient with ankle inversion sprain, J. Phys. Ther. Sci, 28, pp. 708-710, (2016); Thain P, Bleakley C, Mitchel A., Muscle Reaction Time During a Simulated Lateral Ankle Sprain After Wet-Ice Application or Cold-Water Immersion, J Athl Train, 50, 7, pp. 697-703, (2015); Freyler K, Golhofer A, Bruderlin U, Ritzmann R., Reactive Balance Control in Response to Perturbation in Unilateral Stance: Interaction Effects of Direction, Displacement and Velocity on Compensatory Neuromuscular and Kinematic Responses, PLoS One, 12, (2015); Keles J, Sekir U, Gur H, Akova B., Eccentric/concentric training of ankle evertor and dorsiflexors in recreational athletes: Muscle latency and strength, Scand J Med Sci Sports, 24, pp. 29-38, (2014); Kerr R, Arnold G, Drew T, Cochrane L, Abboud R., Shoes influence lower limb muscle activity and may predispose the wearer to lateral ankle ligament injury, J Orthop Res, 27, pp. 318-324, (2009); Akhbari B, Takamjani E, Salavati M., Ankle musculature latency measurement to varing angles of sudden external oblique perturbation in normal functionally unstable ankles, Med J Islam Repub Iran, 20, pp. 166-174, (2007); Jain T, Wauneka C, Liu W., Unloading Reaction during Sudden Ankle Inversion in Healthy Adults, Gait Posture, 39, 1, pp. 529-533, (2014); Hagen M, Lescher S, Gerhardt A, Lahner M, Felber S, Hennig E., Shank Muscle Strength Training Changes Foot Behaviour during a Sudden Ankle Supination, PLoS One, 10, 6, (2015); Chan Y, Fong D, Yung P, Fung K, Chan K., A mechanical supination sprain simulator for studying ankle supination sprain kinematics, J Biomech, 41, pp. 2571-2574, (2008); Hoch M, Mckeon P., Peroneal Reaction Time after Ankle Sprain: A Systematic Review and Meta-analysis, Med Sci Sports Exerc, 46, 3, pp. 546-556, (2014); Konradesn L, Peura G, Beynnon B, Renstrom P., Ankle eversion torque response to sudden ankle inversion Torque response in unbraced, braced, and pre-activated situations, J. Orthop. Res, 23, pp. 315-321, (2005); Pacheco A, Vaz M, Pacheco I., Avaliação do tempo de resposta eletromiográfica em atletas de voleibol e não atletas que sofreram entorse de tornozelo, Rev Bras Med Esporte, 11, 6, pp. 297e-301e, (2005); Ritzmann R, Freyler K, Werkhausen A, Gollhofer A., Changes in Balance Strategy and Neuromuscular Control during a Fatiguing Balance Task—A Study in Perturbed Unilateral Stance, Front. Hum. Neurosci, 289, 10, (2016); Nieuwenhuijzen P, Gruneberg C, Duysens J., Mechanically induced ankle inversion during human wlaking and jumping, J Neurocis Methods, 117, pp. 133-140, (2002); ackson N, Gutierrez G, Kaminski T., The effect of fatigue and habituation on the stretch reflex of the ankle musculature, J Electromyogr Kinesiol, 19, pp. 75-84, (2009); Denyer J, Hewitt N, Mitchel A., Foot structure and muscle reaction time to a simulated ankle sprain, J Athl Train, 48, 3, pp. 326-330, (2013); Agres A, Chrysanthou M, Raffalt P., The effect of ankle bracing on kinematics in simulated sprain and drop landings, Am J Sports Med, 4, 6, pp. 1480-1487, (2019); Eechaute C, Vaes P, Duquet P, Gheluwe B., Reliability and disscriminative validity of sudden ankle inversion measurements in patients with chronic ankle instability, Gait Posture, 30, pp. 82-86, (2009); Palmieri-Smith R, Hopkins T, Brown T., Peroneal activation déficits em pessoas com instabilidade funcional do tornozelo, Am J Sport Med, 37, 5, pp. 982-988, (2009); Fong D, Ha S, Mok K, Chan C, Chan K., Kinematics analysis of ankle inversion ligamentous sprain injuries in sports, Am J Sports Med, 40, 11, pp. 2627-2632, (2012); Fu W, Fang Y, Liu Y, Hou J., The effect of high-top and low-stop shoes on ankle inversion kinematics and muscle activation in landing on a tilted surface, J Foot Ankle Res, 7, (2014); Simpson J, Stewart E, Turner A, Macias D, Wilson S, Chander H, Et al., Neuromuscular control in individuals with chronic ankle instability: A comparison of unexpected and expected ankle inversion perturbations during a single leg drop-landing, Human Movement Science, 64, pp. 133-141, (2019)","L.D. Dos Santos; São Bernardo do Campo, Rua Lucidalva da Silva, 148, Jd. Das Orquídeas, São Paulo, 09854-520, Brazil; email: le.tribo@gmail.com","","Redprint Editora Ltda","15178692","","RBMEB","","English","Rev. Bras. Med. Esporte","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85149028058" "Biernat R.; Czaprowski D.","Biernat, Ryszard (16315129400); Czaprowski, Dariusz (35738631900)","16315129400; 35738631900","Rehabilitation protocol of ""runner's knee"" (Iliotibial Band Syndrome - ITBS) - A case study; [Protokół rehabilitacyjny w przypadku ""kolana biegacz""a (ześpoł pasma biodrowo-piszczeglowego) - Studium przypadku]","2012","Postepy Rehabilitacji","26","3","","35","40","5","0","10.2478/rehab-2013-0044","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879284596&doi=10.2478%2frehab-2013-0044&partnerID=40&md5=9fdcc40a9f61edd6f755cb8d137e86f9","Olsztyńska Szkoła Wyzsza Im. J. Rusieckiego W Olsztynie, Wydział Fizjoterapii, Poland","Biernat R., Olsztyńska Szkoła Wyzsza Im. J. Rusieckiego W Olsztynie, Wydział Fizjoterapii, Poland; Czaprowski D., Olsztyńska Szkoła Wyzsza Im. J. Rusieckiego W Olsztynie, Wydział Fizjoterapii, Poland","Introduction: ""Runner's knee"", in other words Iliotibial Band Syndrome (ITBS) is the second, after PFPS, in terms of incidence frequency overuse injury amongst runners - 8.5%. It is the most common cause of lateral knee pain. It mainly occurs in middle aged athletes, in the second decade of life. Cyclists, skiers, weight lifters, soccer and tennis players are next groups, where this clinical entity occurs. ITBS is typical overuse injury which results from cyclic friction (or compression) of iliotibial band on lateral epicondyle of femur. Training errors are main risk factors. Biomechanical disorders leading to this entity are: weakness of gluteus medius, lack of functional hip mobility, weakness of knee flexors and extensors, shortness of hip adductors, limited hip internal rotation. Improper saddle height, frame size or incorrect pedal position can cause ITBS among cyclists. Case study: Professional cyclist was referred to Rehabilitation Centre, complaining about severe pain located at lateral side of the right knee, lasting from 4 months. The pain was described as burning, sharp, increasing during biking, finally disabling him to continue sports activity. After biomechanical analysis we introduced functional re-education training correcting disbalances, the causes of injury. The role of tri-planar, eccentric exercises rotating the pelvis is underlined. After 7 weeks of aggressive, functional rehabilitation resumed sports activity without pain and functional limitations. Conclusions: An early diagnosis of ITBS allows for shorter rehabilitation time. It's necessary to precisely determine biomechanical disorders leading to ITBS. 7-week rehabilitation, with functional, three dimensional exercises is effective mean of ITBS treatment. We recommend to continue this kind of exercises for 6-12 months to prevent injury recurrence.","Gluteus medius; Iliotibial band; Overuse injury; Triplanar eccentric training","article; biomechanics; case report; clinical feature; cycling; disease severity; human; iliotibial band friction syndrome; kinesiotherapy; knee pain; rehabilitation care; rehabilitation center","Barber F.A., Sutker A.N., Iliotibial band syndrome, Sports Med, 14, 2, pp. 144-148, (1992); Clement D.B., Taunton J.E., Smart G.W., McNicol K.L., A survey of overuse running injuries, Physician and Sportsmedicine, 9, 5, pp. 47-58, (1981); Linderburg G., Pinshaw R., Noakes T.D., Iliotibial band syndrome in runners, Phys Sportsmed, 12, 5, pp. 118-130, (1984); Noble C.A., Iliotibial band friction syndrome in runners, American Journal of Sports Medicine, 8, 4, pp. 232-234, (1980); Fredericson M., Weir A., Practical management of iliotibial band syndrome in runners, Clin J Sports Med, 16, 3, pp. 261-268, (2006); Taunton J.E., Ryan M.B., Clement D.B., McKenzie D.C., Lloyd-Smith D.R., Zumbo B.D., A retrospective case-control analysis of 2002 running injuries, British Journal of Sports Medicine, 36, 2, pp. 95-101, (2002); Noble C.A., The treatment of iliotibial band friction syndrome, Br J Sports Med, 13, pp. 51-54, (1979); Lucas C.A., Iliotibial Band Friction Syndrome as Exhibited in Athletes, Journal of Athletic Training, 27, 3, pp. 250-252, (1992); Kirk K.L., Kuklo T., Klemme W., Iliotibial band friction syndrome, Orthopedics, 23, 11, pp. 1209-1214, (2000); Evans P., The postural function of the iliotibial tract, Annals of the Royal College of Surgeons of England, 61, 4, pp. 271-280, (1979); Paluska S.A., An overview of hip injuries in running, Sports Medicine, 35, 11, pp. 991-1014, (2005); Terry G.C., Hughston J.C., Norwood L.A., The anatomy of the iliopatellar band and iliotibial tract, American Journal of Sports Medicine, 14, 1, pp. 39-45, (1986); Martens M., Libbrecht P., Burssens A., Surgical treatment of the iliotibial band friction syndrome, American Journal of Sports Medicine, 17, 5, pp. 651-654, (1989); Fredericson M., Wolf C., Iliotibial band syndrome in runners: Innovations in treatment, Sports Medicine, 35, 5, pp. 451-459, (2005); Gottschalk F., Kourosh S., Leveau B., The functional anatomy of tensor fasciae latae and gluteus medius and minimus, Journal of Anatomy, 166, pp. 179-189, (1989); Orchard J.W., Fricker P.A., Abud A.T., Mason B.R., Biomechanics of iliotibial band friction syndrome in runners, American Journal of Sports Medicine, 24, 3, pp. 375-379, (1996); Pettitt R., Dolski A., Corrective Neuromuscular Approach to the Treatment of Iliotibial Band Friction Syndrome: A Case Report, Journal of Athletic Training, 35, 1, pp. 96-99, (2000); Noehren B., Davis I., Hamill J., ASB Clinical Biomechanics Award Winner 2006. Prospective study of the biomechanical factors associated with iliotibial band syndrome, Clinical Biomechanics, 22, 9, pp. 951-956, (2007); Cosca D.D., Navazio F., Common Problems in Endurance Athletes, American Family Physician, 15, pp. 237-246, (2007); Harvey D., Assessment of the flexibility of elite athletes using the modified Thomas test, British Journal of Sports Medicine, 32, 1, pp. 68-70, (1998); Ellis R., Hing W., Reid D., Iliotibial Band Friction Syndrome - A Systematic Review, 12, 3, pp. 200-208, (2007); Pedowitz R.N., Use of osteopathic manipulative treatment for iliotibial band friction syndrome, Journal of the American Osteopathic Association, 105, 12, pp. 563-567, (2005); Gunter P., Schwellnus M.P., Local corticosteroid injection in iliotibial band friction syndrome in runners: A randomised controlled trial, British Journal of Sports Medicine, 38, 3, pp. 269-272, (2004); Fredericson M., Guillet M., DeBenedictis L., Quick Solution for Iliotibial Band Syndrome, The Physician and Sports Medicine, 28, 2, pp. 53-68, (2000); Oatis C.A., Kinesiology. The Mechanics and Pathomechanics of Human Movement, pp. 688-689, (2004)","","","Przeglad Geofizyczny","08606161","","","","Polish","Postepy Rehabilitacji","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-84879284596" "Pantović M.; Madić D.; Popović B.; Batez M.; Obradović J.","Pantović, Milan (55082383500); Madić, Dejan (30067727300); Popović, Boris (56915438500); Batez, Maja (56707376500); Obradović, Jelena (36114705800)","55082383500; 30067727300; 56915438500; 56707376500; 36114705800","The effect of whole-body vibration and resistance training on muscle strength in a 13-year-old boy with m. biceps femoris lesion and posttraumatic calcification; [Efekti primene vibracionog treninga i treninga sa dodatnim spoljašnjim opterećenjem na razvoj snage kod 13-godišnjeg dečaka nakon lezije m. biceps femoris i posttraumatske kalcifikacije]","2015","Vojnosanitetski Pregled","72","7","","646","650","4","0","10.2298/VSP140228040P","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84934756702&doi=10.2298%2fVSP140228040P&partnerID=40&md5=c58f568cd70bd0db0aed894e0b4e55cd","University of Novi Sad, Novi Sad, Serbia","Pantović M., University of Novi Sad, Novi Sad, Serbia; Madić D., University of Novi Sad, Novi Sad, Serbia; Popović B., University of Novi Sad, Novi Sad, Serbia; Batez M., University of Novi Sad, Novi Sad, Serbia; Obradović J., University of Novi Sad, Novi Sad, Serbia","Introduction. Skeletal muscle atrophy is a common adaptation after major muscle lesion of m. biceps femoris that results in numerous health-sport related complications. Resistance strength training and whole-body vibration (WBV) have been recognized as an effective tool, which attenuates atrophy and evokes hypertrophy. Case report. We presented a 13-year-old boy with a lesion of m. biceps femoris and posttraumatic calcification sustained in soccer training session 6 month prior participation in this study. The patient underwent training 3 times a week for 7 weeks, including unilateral progressive WBV + resistance training (RT) of the right hamstrings muscle group using WBV and weights. Hamstrings muscle strength was measured using a Cybex isokinetic dynamometer. At the end of week 4, the patient peak torque value of the involved leg increased from 39% body weight (BW) to 72% BW and bilateral deficit decreased from -64% to -35%; at the end of week 7 the participant’s peak torque value of the involved leg increased from 72% BW to 98% BW and bilateral deficit decreased from -35% to -3%, respectively. Conclusion. Unilateral WBV + RT protocol evokes strength increase in the hamstrings muscle group. This case study suggests that adding WBV, as well as the RT program have to be considered in the total management of strength disbalance. Further studies are needed to verify the efficiency of WBV + RT protocol over the classic physical therapy exercise program. © 2015, Institut za Vojnomedicinske Naucne Informacije/Documentaciju. All rights reserved.","Athletic injuries; Femur; Muscular atrophy; Physical therapy modalities; Young adult","Adolescent; Arm Injuries; Biomechanical Phenomena; Calcinosis; Humans; Male; Muscle Contraction; Muscle Strength; Muscle, Skeletal; Muscular Atrophy; Recovery of Function; Resistance Training; Soccer; Time Factors; Torque; Treatment Outcome; Vibration; adolescent; Article; average power; biceps femoris muscle; body weight; calcification; case report; dynamometer; eccentric hamstring curl; endurance ratio; flexor muscle; human; isokinetic exercise; male; muscle injury; muscle strength; nordic hamstring exercise; peak torque; posttraumatic complication; range of motion; resistance training; total work; whole body vibration; Arm Injuries; biomechanics; calcinosis; convalescence; injuries; muscle contraction; Muscular Atrophy; pathology; pathophysiology; skeletal muscle; soccer; therapeutic use; time; torque; treatment outcome; vibration","Agre J.C., Hamstring injuries. Proposed aetiological factors, prevention, and treatment, Sports Med, 2, 1, pp. 21-33, (1985); Kujala U.M., Orava S., Jarvinen M., Hamstring injuries. Current trends in treatment and prevention, Sports Med, 23, 6, pp. 397-404, (1997); Petersen J., Holmich P., Evidence based prevention of hamstring injuries in sport, Br J Sports Med, 39, 6, pp. 319-323, (2005); Croisier J., Ganteaume S., Binet J., Genty M., Ferret J., Strength imbalances and prevention of hamstring injury in professional soccer players: A prospective study, Am J Sports Med, 36, 8, pp. 1469-1475, (2008); Worrell T.W., Perrin D.H., Gansneder B.M., Gieck J.H., Comparison of isokinetic strength and flexibility measures between hamstring injured and noninjured athletes, Clin J Sports Med, 1, 3, pp. 118-125, (1991); Lloyd R., Faigenbaum A., Myer A., Oliver J., Stone M., Jeffreys I., Et al., United Kingdom Strength and Conditioning Association Position Statement on youth resistance training, Prof Strength Cond J, 26, pp. 26-39, (2012); Fyfe J.J., Opar D.A., Williams M.D., Shield A.J., The role of neuromuscular inhibition in hamstring strain injury recurrence, J Electromyogr Kinesiol, 23, 3, pp. 523-530, (2013); Chanou K., Gerodimos V., Karatrantou K., Jamurtas A., Whole-body vibration and rehabilitation of chronic diseases: A review of the literature, J Sports Sci Med, 11, 2, pp. 187-200, (2012); Fagnani F., Giombini A., Di Cesare A., Pigozzi F., di Salvo V., The Effects of a Whole-Body Vibration Program on Muscle Performance and Flexibility in Female Athletes, Am J Phys Med Rehabil, 85, 12, pp. 956-962, (2006); Moezy A., Olyaei G., Hadian M., Razi M., Faghihzadeh S., A comparative study of whole body vibration training and conventional training on knee proprioception and postural stability after anterior cruciate ligament reconstruction, Br J Sports Med, 42, 5, pp. 373-378, (2008); Sanudo B., Feria A., Carrasco L., de Hoyo M., Santos R., Gamboa H., Gender Differences in Knee Stability in Response to Whole- Body Vibration, J Strength Cond Res, 26, 8, pp. 2156-2165, (2012); Delecluse C., Roelants M., Verschueren S., Strength increase after whole-body vibration compared with resistance training, Med Sci Sports Exerc, 35, 6, pp. 1033-1041, (2003); Mjolsnes R., Arnason A., Osthagen T., Raastad T., Bahr R., A 10-week randomized trial comparing eccentric vs. concentric hamstring strength training in well-trained soccer players, Scand J Med Sci Sports, 14, 5, pp. 311-317, (2004); de Ruiter C.J., Van R.S., Schilperoort J.V., Hollander A.P., de Haan A., The effects of 11 weeks whole body vibration training on jump height, contractile properties and activation of human knee extensors, Eur J Appl Physiol, 90, 5-6, pp. 595-600, (2003); Isokinetic testing and data interpretation., (2013); Stark C., Nikopoulou-Smyrni P., Stabrey A., Semler O., Schoenau E., Effect of a new physiotherapy concept on bone mineral density, muscle force and gross motor function in children with bilateral cerebral palsy, J Musculoskelet Neuronal Interact, 10, 2, pp. 151-158, (2010); Mahieu N., Witvrouw E., van de Voorde D., Arbyn V., van den Broecke W., Improving Strength and Postural Control in Young Skiers: Whole-Body Vibration versus Equivalent Resistance Training, J Athl Train, 41, 3, pp. 286-293, (2006); Clark R., Bryant A., Culgan J.P., Hartley B., The effects of eccentric hamstring strength training on dynamic jumping performance and isokinetic strength parameters: A pilot study on the implications for the prevention of hamstring injuries, Phys Ther Sport, 6, 2, pp. 67-73, (2005); Rauch F., Vibration therapy, Dev Med Child Neurol, 51, pp. 166-168, (2009); Moawd S., Abdelhalem N., Samhan A., Mahmoud W., Effects of Whole-Body Vibration and Resistance Training on Muscular Performance in Young Adults, J Am Sci, 10, 1, pp. 67-73, (2014); Karatrantou K., Gerodimos V., Dipla K., Zafeiridis A., Whole-body vibration training improves flexibility, strength profile of knee flexors, and hamstrings-to-quadriceps strength ratio in females, J Sci Med Sport, 16, 5, pp. 477-481, (2013); Melnyk M., Kofler B., Faist M., Hodapp M., Gollhofer A., Effect of a whole-body vibration session on knee stability, Int J Sports Med, 29, 10, pp. 839-844, (2008); Semler O., Fricke O., Vezyroglou K., Stark C., Schoenau E., Preliminary results on the mobility after whole body vibration in immobilized children and adolescents, J Musculoskelet Neuronal Interact, 7, 1, pp. 77-81, (2007); Davis R., Sanborn C., Nichols D., Bazett-Jones D.M., Dugan E.L., The effects of whole body vibration on bone mineral density for a person with a spinal cord injury: A case study, Adapt Phys Activ Q, 27, 1, pp. 60-72, (2010); Bressel E., Smith G., Branscomb J., Transmission of whole body vibration in children while standing, Clin Biomech (Bristol, Avon), 25, 2, pp. 181-186, (2010); Cardinale M., Bosco C., The use of vibration as an exercise intervention, Exerc Sport Sci Rev, 31, 1, pp. 3-7, (2003); Pollock R.D., Woledge R.C., Martin F.C., di Newham J., Effects of whole body vibration on motor unit recruitment and threshold, J Appl Physiol, 112, 3, pp. 388-395, (2012); Holcomb W.R., Rubley M.D., Lee H.J., Guadagnoli M.A., Effect of hamstring-emphasized resistance training on hamstring: Quadriceps strength ratios, J Strength Cond Res, 21, 1, pp. 41-47, (2007); Aaboe J., Henriksen M., Christensen R., Bliddal H., Lund H., Effect of whole body vibration exercise on muscle strength and proprioception in females with knee osteoarthritis, Knee, 16, 4, pp. 256-261, (2009); Askling C., Saartok T., Thorstensson A., Type of acute hamstring strain affects flexibility, strength, and time to return to preinjury level, Br J Sports Med, 40, 1, pp. 40-44, (2006); Sole G., Milosavljevic S., Nicholson H.D., Sullivan S.J., Selective strength loss and decreased muscle activity in hamstring injury, J Orthop Sports Phys Ther, 41, 5, pp. 354-363, (2011)","M. Pantović; Novi Sad, 21 000, Serbia; email: milan.pantovic@yahoo.com","","Inst. Sci. inf., Univ. Defence in Belgrade","00428450","","VSPRA","26364461","English","Vojnosanit. Pregl.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-84934756702" "Miralles-Iborra A.; Elvira J.L.L.; Del Coso J.; Hernandez-Sanchez S.; Pino-Ortega J.; Moreno-Pérez V.","Miralles-Iborra, Aaron (57401915800); Elvira, Jose L. L. (23481856500); Del Coso, Juan (14053970400); Hernandez-Sanchez, Sergio (35096143300); Pino-Ortega, Jose (36343991000); Moreno-Pérez, Victor (35096622700)","57401915800; 23481856500; 14053970400; 35096143300; 36343991000; 35096622700","Influence of a football match on landing biomechanics and jump performance in female football players","2024","Scandinavian Journal of Medicine and Science in Sports","34","1","e14518","","","","0","10.1111/sms.14518","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85174009999&doi=10.1111%2fsms.14518&partnerID=40&md5=90dc45f24866d0fcccca498479019ce2","Sports Research Centre (Department of Sport Sciences), Miguel Hernandez University of Elche, Alicante, Spain; Sport Sciences Research Centre, Rey Juan Carlos University, Fuenlabrada, Spain; Traslational Research Centre of Physiotherapy, Department of Pathology and Surgery, Faculty of Medicine, Miguel Hernandez University, Alicante, Spain; Physical Activity and Sports Department, Faculty of Sports Science, University of Murcia, International Excellence Campus “Mare Nostrum”, Murcia, Spain","Miralles-Iborra A., Sports Research Centre (Department of Sport Sciences), Miguel Hernandez University of Elche, Alicante, Spain; Elvira J.L.L., Sports Research Centre (Department of Sport Sciences), Miguel Hernandez University of Elche, Alicante, Spain; Del Coso J., Sport Sciences Research Centre, Rey Juan Carlos University, Fuenlabrada, Spain; Hernandez-Sanchez S., Traslational Research Centre of Physiotherapy, Department of Pathology and Surgery, Faculty of Medicine, Miguel Hernandez University, Alicante, Spain; Pino-Ortega J., Physical Activity and Sports Department, Faculty of Sports Science, University of Murcia, International Excellence Campus “Mare Nostrum”, Murcia, Spain; Moreno-Pérez V., Sports Research Centre (Department of Sport Sciences), Miguel Hernandez University of Elche, Alicante, Spain, Traslational Research Centre of Physiotherapy, Department of Pathology and Surgery, Faculty of Medicine, Miguel Hernandez University, Alicante, Spain","This study aimed to assess the acute effect of a competitive football match on jump performance and kinematic parameters during jump landing in semiprofessional female football players. Twenty-two semiprofessional players (20 ± 3 years) underwent a drop jump task for a posterior video analysis of the landing phase. These measurements were obtained at (1) baseline, (2) after, and (3) 48 h after a competitive football match. A one-way ANOVA with repeated measures was employed to detect differences over the time. There was a main effect of time for maximal knee flexion angle during drop landing (p = 0.001). In comparison with baseline, maximal knee flexion angle was reduced immediately post-match and was still reduced 48 h after the match (63.4 ± 8.6 vs 57.0 ± 11.7 vs 48.9 ± 19.1, p ≤ 0.038). There was also a main effect of time for drop jump height (p < 0.001). Drop jump height was reduced immediately post-match and remained low 48 h after the match in comparison with baseline (27.3 ± 3.6 vs 24.5 ± 2.8 ~ 25.5 ± 3.0 cm, p ≤ 0.002). There was a main effect of time on hip flexion angle during landing (p = 0.001), but the pairwise comparison revealed that this variable was not affected immediately post-match but was lower 48 h after the match than at baseline (50.1 ± 10.1 ~ 50.8 ± 13.2 vs 38.1 ± 17.8 °, p ≤ 0.005). A competitive football match worsened jump performance and several landing biomechanical parameters in female football players, which were still decreased in comparison with baseline even 48 h after the match. © 2023 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.","fatigue; knee injury; landing; match competition; soccer","Anterior Cruciate Ligament Injuries; Biomechanical Phenomena; Female; Football; Humans; Knee Joint; anterior cruciate ligament injury; biomechanics; female; football; human; knee","Federation Internationale de Football Association (FIFA). 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A systematic review, Sports Health, 12, 2, pp. 181-188, (2020); Ruiz-Perez I., Elvira J.L.L., Myer G.D., De Ste C.M., Ayala F., Criterion-related validity of 2-Dimensional measures of hip, knee and ankle kinematics during bilateral drop-jump landings, Eur J Hum Mov, 47, pp. 100-120, (2021); Ulman S., Erdman A., Loewen A., Et al., Concurrent validity of movement screening criteria designed to identify injury risk factors in adolescent female volleyball players, Front Sports Act Living, 4, (2022); Peebles A.T., Arena S.L., Queen R.M., A new method for assessing landing kinematics in non-laboratory settings, Phys Ther Sport, 49, pp. 21-30, (2021); Nilstad A., Andersen T.E., Kristianslund E., Et al., Physiotherapists can identify female football players with high knee valgus angles during vertical drop jumps using real-time observational screening, J Orthop Sports Phys Ther, 44, 5, pp. 358-365, (2014); Bosco C., Luhtanen P., Komi P.V., A simple method for measurement of mechanical power in jumping, Eur J Appl Physiol Occup Physiol, 50, 2, pp. 273-282, (1983); Gallardo-Fuentes F., Gallardo-Fuentes J., Ramirez-Campillo R., Et al., Intersession and intrasession reliability and validity of the my jump app for measuring different jump actions in trained male and female athletes, J Strength Cond Res, 30, 7, pp. 2049-2056, (2016); Bishop C., Jarvis P., Turner A., Balsalobre-Fernandez C., Validity and reliability of strategy metrics to assess countermovement jump performance using the newly developed my jump lab smartphone application, J Hum Kinet, 83, 1, pp. 185-195, (2022); Morin J.B., Dalleau G., Kyrolainen H., Jeannin T., Belli A., A simple method for measuring stiffness during running, J Appl Biomech, 21, 2, pp. 167-180, (2005); Hernandez-Belmonte A., Bastida-Castillo A., Gomez-Carmona C.D., Pino-Ortega J., Validity and reliability of an inertial device (WIMU PROTM) to quantify physical activity level through steps measurement, J Sports Med Phys Fitness, 59, 4, pp. 587-592, (2019); Harper D.J., Carling C., Kiely J., High-intensity acceleration and deceleration demands in elite team sports competitive match play: a systematic review and meta-analysis of observational studies, Sports Med, 49, 12, pp. 1923-1947, (2019); Foster C., Florhaug J.A., Franklin J., Et al., A new approach to monitoring exercise training, J Strength Cond Res, 15, 1, pp. 109-115, (2001); Impellizzeri F.M., Rampinini E., Coutts A.J., Sassi A., Marcora S.M., Use of RPE-based training load in soccer, Med Sci Sports Exerc, 36, 6, pp. 1042-1047, (2004); Hopkins W.G., Marshall S.W., Batterham A.M., Hanin J., Progressive statistics for studies in sports medicine and exercise science, Med Sci Sports Exerc, 41, 1, pp. 3-12, (2009); Vallat R., Pingouin: statistics in Python, J Open Source Softw, 3, 31, (2018); Dingenen B., Malfait B., Vanrenterghem J., Robinson M.A., Verschueren S.M.P., Staes F.F., Can two-dimensional measured peak sagittal plane excursions during drop vertical jumps help identify three-dimensional measured joint moments?, Knee, 22, 2, pp. 73-79, (2015); Nilstad A., Petushek E., Mok K.M., Bahr R., Krosshaug T., Kiss goodbye to the “kissing knees”: no association between frontal plane inward knee motion and risk of future non-contact ACL injury in elite female athletes, Sports Biomech, 22, 1, pp. 65-79, (2023); Larwa J., Stoy C., Chafetz R.S., Boniello M., Franklin C., Stiff Landings, Core stability, and dynamic knee valgus: a systematic review on documented anterior cruciate ligament ruptures in male and female athletes, Int J Environ Res Public Health, 18, 7, (2021); Lisman P., Wilder J.N., Berenbach J., Jiao E., Hansberger B., The relationship between landing error scoring system performance and injury in female collegiate athletes, Int J Sports Phys Ther, 16, 6, pp. 1415-1425, (2021); Andersson H., Raastad T., Nilsson J., Paulsen G., Garthe I., Kadi F., Neuromuscular fatigue and recovery in elite female soccer: effects of active recovery, Med Sci Sports Exerc, 40, 2, pp. 372-380, (2008); Thorlund J.B., Michalsik L.B., Madsen K., Aagaard P., Acute fatigue-induced changes in muscle mechanical properties and neuromuscular activity in elite handball players following a handball match, Scand J Med Sci Sports, 18, 4, pp. 462-472, (2008)","J.L.L. Elvira; Sports Research Centre (Department of Sport Sciences), Miguel Hernandez University of Elche, Alicante, Avda. de la Universidad s/n., P.C., 03202, Spain; email: jose.lopeze@umh.es","","John Wiley and Sons Inc","09057188","","SMSSE","37828778","English","Scand. J. Med. Sci. Sports","Article","Final","","Scopus","2-s2.0-85174009999" "Messina G.; Pomara F.; Petrigna L.; Piccione M.C.; Caserta S.; Petrucci M.; Palma A.; Bianco A.","Messina, Giuseppe (57192481360); Pomara, Francesco (6602771918); Petrigna, Luca (57190685171); Piccione, Maria C. (57208740354); Caserta, Silvia (57986794900); Petrucci, Marco (37087575900); Palma, Antonio (7102805719); Bianco, Antonino (57208242105)","57192481360; 6602771918; 57190685171; 57208740354; 57986794900; 37087575900; 7102805719; 57208242105","The influence of soccer shoes on plantar distribution in young players in a static condition: a pilot study","2022","Journal of Sports Medicine and Physical Fitness","62","12","","1702","1706","4","0","10.23736/S0022-4707.22.13644-3","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85142939603&doi=10.23736%2fS0022-4707.22.13644-3&partnerID=40&md5=445967be82f88b814314ee66e3e6362b","Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo, Italy; Medeor Research Institute, Palermo, Italy","Messina G., Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo, Italy; Pomara F., Medeor Research Institute, Palermo, Italy; Petrigna L., Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo, Italy; Piccione M.C., Medeor Research Institute, Palermo, Italy; Caserta S., Medeor Research Institute, Palermo, Italy; Petrucci M., Medeor Research Institute, Palermo, Italy; Palma A., Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo, Italy; Bianco A., Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo, Italy","BACKGROUND: Injuries are a serious problem in soccer for the player but also for the society. It has been noted most of the injuries occurs during non-contact situations and, the soccer shoes have an important role. Unfortunately, few studies investigated the plantar distribution, argument that could help to deeply understand the causes behind the injuries. The objective was to evaluate the influence of the soccer shoes on plantar distribution in young players in a static condition. METHODS: Young soccer players (range 11-18) were recruited and performed two tests on a baropodometric platform, one barefoot and one with technical soccer shoes. A student’s t-test was performed to evaluate the differences between the conditions. RESULTS: Significative results were between the left plantar surface (P<0.05) and in the total surface anterior (P<0.05) with and without the soccer shoe. Related to the pressure values, soccer shoes resulted higher than barefoot condition. Statistical significance has been found also between the forefoot and the rearfoot in the left foot, in barefoot condition (P<0.05). CONCLUSIONS: Soccer shoes generally produce a reduction in the contact plantar surface, especially in the anterior zone and the foot load is higher in the forefoot zone. © 2022 EDIZIONI MINERVA MEDICA.","Adolescent; Athletic performance; Prevention and control; Soccer","Biomechanical Phenomena; Foot; Humans; Pilot Projects; Pressure; Shoes; Soccer; biomechanics; foot; human; injury; pilot study; pressure; shoe; soccer","Fauno P, Wulff Jakobsen B., Mechanism of anterior cruciate ligament injuries in soccer, Int J Sports Med, 27, pp. 75-79, (2006); Wong P, Hong Y., Soccer injury in the lower extremities, Br J Sports Med, 39, pp. 473-482, (2005); Hawkins RD, Hulse MA, Wilkinson C, Hodson A, Gibson M., The association football medical research programme: an audit of injuries in professional football, Br J Sports Med, 35, pp. 43-47, (2001); Yde J, Nielsen AB., Sports injuries in adolescents’ ball games: soccer, handball and basketball, Br J Sports Med, 24, pp. 51-54, (1990); Woods C, Hawkins R, Hulse M, Hodson A., The Football Association Medical Research Programme: an audit of injuries in professional football-analysis of preseason injuries, Br J Sports Med, 36, pp. 436-441, (2002); Sims EL, Hardaker WM, Queen RM., Gender differences in plantar loading during three soccer-specific tasks, Br J Sports Med, 42, pp. 272-277, (2008); Che H, Nigg BM, de Koning J., Relationship between plantar pressure distribution under the foot and insole comfort, Clin Biomech (Bristol, Avon), 9, pp. 335-341, (1994); Hennig EM., Plantar pressure measurements for the evaluation of shoe comfort, overuse injuries and performance in soccer, Journal Footwear Science, 6, pp. 119-127, (2014); Ekstrand J, van Dijk CN., Fifth metatarsal fractures among male professional footballers: a potential career-ending disease, Br J Sports Med, 47, pp. 754-758, (2013); Warden SJ, Creaby MW, Bryant AL, Crossley KM., Stress fracture risk factors in female football players and their clinical implications, Br J Sports Med, 41, pp. i38-i43, (2007); Hennig EM, Milani TL., In-Shoe Pressure Distribution for Running in Various Types of Footwear, J Appl Biomech, 11, pp. 299-310, (1995); Hennig EM., The influence of soccer shoe design on player performance and injuries, Res Sports Med, 19, pp. 186-201, (2011); Okholm Kryger K, Jarratt V, Mitchell S, Forrester S., Can subjective comfort be used as a measure of plantar pressure in football boots?, J Sports Sci, 35, pp. 953-959, (2017); Eils E, Streyl M, Linnenbecker S, Thorwesten L, Volker K, Rosenbaum D., Characteristic plantar pressure distribution patterns during soccer-specific movements, Am J Sports Med, 32, pp. 140-145, (2004); Hennig EM, Sterzing T., The influence of soccer shoe design on playing performance: a series of biomechanical studies, Journal Footwear Science, 2, pp. 3-11, (2010); Lambson RB, Barnhill BS, Higgins RW., Football cleat design and its effect on anterior cruciate ligament injuries. A three-year prospective study, Am J Sports Med, 24, pp. 155-159, (1996); Dowling AV, Corazza S, Chaudhari AM, Andriacchi TP., Shoe-surface friction influences movement strategies during a sidestep cutting task: implications for anterior cruciate ligament injury risk, Am J Sports Med, 38, pp. 478-485, (2010); Stefanyshyn DJ. J.S., Park S.K., The influence of soccer cleat design on resultant joint moments, Footwear Sci, 2, pp. 13-19, (2010); Thomson A, Whiteley R, Bleakley C., Higher shoe-surface interaction is associated with doubling of lower extremity injury risk in football codes: a systematic review and meta-analysis, Br J Sports Med, 49, pp. 1245-1252, (2015); Smith ND, Janaway L., Ground reaction force measures when running in soccer boots and soccer training shoes on a natural turf surface, Sports Eng, 7, pp. 159-167, (2004); Santos DC, Flynn L, Pitman D, Feeney D, Patterson C, Westland E., Distribution of in-shoe dynamic plantar foot pressures in professional football players, Foot, 11, pp. 10-14, (2001); Carl HD, Pauser J, Swoboda B, Jendrissek A, Brem M., Soccer boots elevate plantar pressures in elite male soccer professionals, Clin J Sport Med, 24, pp. 58-61, (2014); Debiasio JC, Russell ME, Butler RJ, Nunley JA, Queen RM., Changes in plantar loading based on shoe type and sex during a jump-landing task, J Athl Train, 48, pp. 601-609, (2013); Wong PL, Chamari K, Mao DW, Wisloff U, Hong Y., Higher plantar pressure on the medial side in four soccer-related movements, Br J Sports Med, 41, pp. 93-100, (2007); Torg JS, Quedenfeld T., Effect of shoe type and cleat length on incidence and severity of knee injuries among high school football players, Res Q, 42, pp. 203-211, (1971); Oztekin HH, Boya H, Ozcan O, Zeren B, Pinar P., Foot and ankle injuries and time lost from play in professional soccer players, Foot, 19, pp. 22-28, (2009); Queen RM, Haynes BB, Hardaker WM, Garrett WE, Forefoot loading during 3 athletic tasks, Am J Sports Med, 35, pp. 630-636, (2007); Gravante G, Russo G, Pomara F, Rubino G, Ridola CG., Influence of physical activity on plantar pressures and on ground projection of the body barycentre, Med Sport (Roma), 55, pp. 269-278, (2002); Bentley JA, Ramanathan AK, Arnold GP, Wang W, Abboud RJ., Harmful cleats of football boots: a biomechanical evaluation, Foot Ankle Surg, 17, pp. 140-144, (2011); Azevedo RR, da Rocha ES, Franco PS, Carpes FP., Plantar pressure asymmetry and risk of stress injuries in the foot of young soccer players, Phys Ther Sport, 24, pp. 39-43, (2017); Notarnicola A, Maccagnano G, Pesce V, Tafuri S, Mercadante M, Fiore A, Et al., Effect of different types of shoes on balance among soccer players, Muscles Ligaments Tendons J, 5, pp. 208-213, (2015); Wannop JW, Stefanyshyn DJ., The effect of translational and rotational traction on lower extremity joint loading, J Sports Sci, 34, pp. 613-620, (2016); Wong PL, Chamari K, Chaouachi A, Mao DW, Wisloff U, Hong Y., Difference in plantar pressure between the preferred and non-preferred feet in four soccer-related movements, Br J Sports Med, 41, pp. 84-92, (2007); Kearns CF, Isokawa M, Abe T., Architectural characteristics of dominant leg muscles in junior soccer players, Eur J Appl Physiol, 85, pp. 240-243, (2001); Marencakova J, Maly T, Sugimoto D, Gryc T, Zahalka F., Foot typology, body weight distribution, and postural stability of adolescent elite soccer players: A 3-year longitudinal study, PLoS One, 13, (2018); Tropp H, Ekstrand J, Gillquist J., Stabilometry in functional instability of the ankle and its value in predicting injury, Med Sci Sports Exerc, 16, pp. 64-66, (1984); Majid F, Bader DL., A biomechanical analysis of the plantar surface of soccer shoes, Proc Inst Mech Eng H, 207, pp. 93-101, (1993); Petrigna L, Gentile A, Mani D, Pajaujiene S, Zanotto T, Thomas E, Et al., Dual-Task Conditions on Static Postural Control in Older Adults: A Systematic Review and Meta-Analysis, J Aging Phys Act, 29, pp. 162-177, (2020)","L. Petrigna; Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo, Via Giovanni Pascoli 6, 90144, Italy; email: luca.petrigna@unipa.it","","Edizioni Minerva Medica","00224707","","JMPFA","35230071","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-85142939603" "Yagin F.H.; Hasan U.C.H.; Clemente F.M.; Eken O.; Badicu G.; Gulu M.","Yagin, Fatma Hilal (57211715604); Hasan, Uday CH (58577824100); Clemente, Filipe Manuel (57209913336); Eken, Ozgur (56416374000); Badicu, Georgian (57191271492); Gulu, Mehmet (57217245448)","57211715604; 58577824100; 57209913336; 56416374000; 57191271492; 57217245448","Using machine learning to determine the positions of professional soccer players in terms of biomechanical variables","2023","Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","","","","","","","0","10.1177/17543371231199814","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85171267817&doi=10.1177%2f17543371231199814&partnerID=40&md5=b4ccc1e4c642f928ce0217791384d322","Department of Biostatistics and Medical Informatics, Faculty of Medicine, Inonu University, Malatya, Turkey; Department of Physical Education and Sports Sciences, Al-Kitab University, Kirkuk, Iraq; Faculty of Physical Education and Sports Sciences, University of Kirkuk, Kirkuk, Iraq; Escola Superior Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal; Instituto de Telecomunicações, Delegação da Covilhã, Lisboa, Portugal; Physical Education and Sports Teaching, Faculty of Sport Science, Inonu University, Malatya, Turkey; Department of Physical Education and Special Motricity, Faculty of Physical Education and Mountain Sports, Transilvania University of Braşov, Braşov, Romania; Department of Coaching Education, Faculty of Sport Sciences, Kirikkale University, Kirikkale, Turkey","Yagin F.H., Department of Biostatistics and Medical Informatics, Faculty of Medicine, Inonu University, Malatya, Turkey; Hasan U.C.H., Department of Physical Education and Sports Sciences, Al-Kitab University, Kirkuk, Iraq, Faculty of Physical Education and Sports Sciences, University of Kirkuk, Kirkuk, Iraq; Clemente F.M., Escola Superior Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal, Instituto de Telecomunicações, Delegação da Covilhã, Lisboa, Portugal; Eken O., Physical Education and Sports Teaching, Faculty of Sport Science, Inonu University, Malatya, Turkey; Badicu G., Department of Physical Education and Special Motricity, Faculty of Physical Education and Mountain Sports, Transilvania University of Braşov, Braşov, Romania; Gulu M., Department of Coaching Education, Faculty of Sport Sciences, Kirikkale University, Kirikkale, Turkey","This study aimed to predict professional soccer players’ positions with machine learning according to certain locomotor demands. Data from 20 male professional soccer players (five defenders, eight midfielders, and seven attackers) from the same team were tracked daily with a global navigation satellite system. A total of 1910 individual training sessions were recorded. The 10-fold cross-validation method was used. Soccer player positions were predicted using predictive models created with random forest (RF), gradient boosting tree, bagging classification, and regression trees algorithms, and the results were evaluated with comprehensive performance measures. Ratios and an importance plot were used to analyze the importance of the variables according to their contributions to the estimation. The findings show that the RF model achieved 100% accuracy, which means that RF can predict all player positions (100%). Running distance (26.5%), total distance (17.2%), and player load (15.8%) were the three variables that contributed the most to the estimation of the RF model and were the most important factor in distinguishing player positions. Consequently, our proposed machine learning approach (RF model) can reduce false alarms and player mispositioning. © IMechE 2023.","bagging classification; Biomechanics; First Portuguese League; global positioning system; gradient boosting tree; machine learning; modeling; random forest; regression trees algorithms; soccer","Adaptive boosting; Forestry; Professional aspects; Sports; Bagging classification; Boosting trees; First portuguese league; Gradient boosting; Gradient boosting tree; Machine-learning; Modeling; Random forests; Regression tree algorithms; Soccer player; Machine learning","Barnes C., Archer D.T., Hogg B., Et al., The evolution of physical and technical performance parameters in the English Premier League, Int J Sports Med, 35, pp. 1095-1100, (2014); Bush M.D., Archer D.T., Hogg R., Et al., Factors influencing physical and technical variability in the English Premier League, Int J Sports Physiol Perform, 10, pp. 865-872, (2015); Bush M., Barnes C., Archer D.T., Et al., Evolution of match performance parameters for various playing positions in the English Premier League, Hum Mov Sci, 39, pp. 1-11, (2015); Bradley P.S., Di Mascio M., Peart D., Et al., High-intensity activity profiles of elite soccer players at different performance levels, J Strength Cond Res, 24, pp. 2343-2351, (2010); Stolen T., Chamari K., Castagna C., Et al., Physiology of soccer: an update, Sports Med, 35, pp. 501-536, (2005); Goncalves L.G.C., Clemente F., Palucci Vieira L.H., Et al., Effects of match location, quality of opposition, match outcome, and playing position on load parameters and players’ prominence during official matches in professional soccer players, Hum Mov, 22, pp. 35-44, (2021); Praca G., Diniz L., Clemente F., Et al., The influence of playing position on the physical, technical, and network variables of sub-elite professional soccer athletes, Hum Mov, 22, pp. 22-31, (2021); Trewin J., Meylan C., Varley M.C., Et al., The influence of situational and environmental factors on match-running in soccer: a systematic review, Sci Med Football, 1, pp. 183-194, (2017); Asian-Clemente J., Suarez-Arrones L., Requena B., Et al., Influence of tactical behaviour on running performance in the three most successful soccer teams during the competitive season of the Spanish First Division, J Hum Kinet, 82, pp. 135-144, (2022); Aquino R., Carling C., Palucci Vieira L.H., Et al., Influence of situational variables, team formation, and playing position on match running performance and social network analysis in Brazilian professional soccer players, J Strength Cond Res, 34, pp. 808-817, (2020); Hasan U.C., Silva R., Clemente F., Weekly variations of biomechanical load variables in professional soccer players: comparisons between playing positions, Hum Mov, 22, pp. 19-34, (2021); Martin-Garcia A., Gomez Diaz A., Bradley P.S., Et al., Quantification of a professional football team’s external load using a microcycle structure, J Strength Cond Res, 32, pp. 3511-3518, (2018); Duggan J.D., Moody J.A., Byrne P.J., Et al., Training load monitoring considerations for female Gaelic team sports: from theory to practice, Sports, 9, (2021); Jaspers A., De Beeck T.O., Brink M.S., Et al., Relationships between the external and internal training load in professional soccer: what can we learn from machine learning?, Int J Sports Physiol Perform, 13, pp. 625-630, (2018); Vallance E., Sutton-Charani N., Imoussaten A., Et al., Combining internal- and external-training-loads to predict non-contact injuries in soccer, Appl Sci, 10, (2020); Rico-Gonzalez M., Pino-Ortega J., Mendez A., Et al., Machine learning application in soccer: a systematic review, Biol Sport, 40, pp. 249-263, (2023); Rossi A., Pappalardo L., Cintia P., A narrative review for a machine learning application in sports: an example based on injury forecasting in soccer, Sports, 10, (2022); de Leeuw A.-W., van der Zwaard S., van Baar R., Et al., Personalized machine learning approach to injury monitoring in elite volleyball players, Eur J Sport Sci, 22, pp. 511-520, (2022); Bartlett J.D., O'Connor F., Pitchford N., Et al., Relationships between internal and external training load in team-sport athletes: evidence for an individualized approach, Int J Sports Physiol Perform, 12, pp. 230-234, (2017); Bredt S.D.G.T., Chagas M.H., Peixoto G.H., Et al., Understanding player load: meanings and limitations, J Hum Kinet, 71, pp. 5-9, (2020); Alarfaj F.K., Khan N.A., Enhancing the performance of SQL injection attack detection through probabilistic neural networks, Appl Sci, 13, (2023); Awotunde J.B., Folorunso S.O., Imoize A.L., Et al., An ensemble tree-based model for intrusion detection in Industrial Internet of Things Networks, Appl Sci, 13, (2023); Ong A.K.S., Zulvia F.E., Prasetyo Y.T., The Big One” earthquake preparedness assessment among younger Filipinos using a random forest classifier and an artificial neural network, Sustainability, 15, (2023); Das S., Imtiaz M.S., Neom N.H., Et al., A hybrid approach for Bangla sign language recognition using deep transfer learning model with random forest classifier, Expert Syst Appl, 213, (2023); Akbulut S., Yagin F.H., Colak C., Prediction of COVID-19 based on genomic biomarkers of metagenomic next, Biomed Eng, 14, pp. 4-15, (2020); Omurlu I.K., Cantas F., Ture M., Et al., An empirical study on performances of multilayer perceptron, logistic regression, ANFIS, KNN and bagging CART, J Stat Manag Syst, 23, pp. 827-841, (2020); Gocheva-Ilieva S., Ivanov A., Stoimenova-Minova M., Prediction of daily mean pm10 concentrations using random forest, cart ensemble and bagging stacked by mars, Sustainability, 14, (2022); Percin I., Yagin F.H., Arslan A.K., Et al., An interactive web tool for classification problems based on machine learning algorithms using java programming language: data classification software, pp. 1-7, (2019); Indumathi V., Megala S.S., Enhanced multi-label classification model for bully text using supervised learning techniques, (2023); Jeong T.-S., Reilly T., Morton J., Et al., Quantification of the physiological loading of one week of “pre-season” and one week of “in-season” training in professional soccer players, J Sports Sci, 29, pp. 1161-1166, (2011); Clemente F., Rabbani A., Ferreira R., Et al., Drops in physical performance during intermittent small-sided and conditioned games in professional soccer players, Hum Mov, 21, pp. 7-14, (2020); Clemente F., Sarmento H., The effects of small-sided soccer games on technical actions and skills: a systematic review, Hum Mov, 21, pp. 100-119, (2020); Di Salvo V., Gregson W., Atkinson G., Et al., Analysis of high intensity activity in Premier League soccer, Int J Sports Med, 30, pp. 205-212, (2009); Oliva-Lozano J.M., Fortes V., Muyor J.M., The first, second, and third most demanding passages of play in professional soccer: a longitudinal study, Biol Sport, 38, pp. 165-174, (2021); Oliva-Lozano J.M., Fortes V., Krustrup P., Et al., Acceleration and sprint profiles of professional male football players in relation to playing position, PLoS One, 15, (2020); Modric T., Versic S., Sekulic D., Et al., Analysis of the association between running performance and game performance indicators in professional soccer players, Int J Environ Res Public Health, 16, (2019); Akenhead R., Harley J.A., Tweddle S.P., Examining the external training load of an English Premier League football team with special reference to acceleration, J Strength Cond Res, 30, pp. 2424-2432, (2016); Ade J.D., Drust B., Morgan O.J., Et al., Physiological characteristics and acute fatigue associated with position-specific speed endurance soccer drills: production vs maintenance training, Sci Med Football, 5, pp. 6-17, (2021); Gil S.M., Gil J., Irazusta A., Et al., Anthropometrical characteristics and somatotype of young soccer players and their comparison with the general population, Biol Sport, 27, pp. 17-24, (2010); Mohr M., Krustrup P., Bangsbo J., Match performance of high-standard soccer players with special reference to development of fatigue, J Sports Sci, 21, pp. 519-528, (2003); Sariati D., Hammami R., Chtara M., Et al., Change-of-direction performance in elite soccer players: preliminary analysis according to their playing positions, Int J Environ Res Public Health, 17, (2020)","F.H. Yagin; Department of Biostatistics and Medical Informatics, Faculty of Medicine, Inonu University, Malatya, Turkey; email: hilal.yagin@inonu.edu.tr","","SAGE Publications Ltd","17543371","","","","English","Proc. Inst. Mech. Eng. Part P J. Sports Eng. Technol.","Article","Article in press","","Scopus","2-s2.0-85171267817" "Fujimoto M.; Sato M.; Nagano A.; Rogers M.W.; Isaka T.","Fujimoto, Masahiro (36607880500); Sato, Masaomi (58181553000); Nagano, Akinori (7006344989); Rogers, Mark W. (15747886700); Isaka, Tadao (7004297959)","36607880500; 58181553000; 7006344989; 15747886700; 7004297959","Preparatory knee flexion movement facilitates faster sideways jumping execution in male collegiate soccer goalkeepers","2023","Sports Biomechanics","","","","","","","0","10.1080/14763141.2023.2197876","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85152446583&doi=10.1080%2f14763141.2023.2197876&partnerID=40&md5=9088d78482534baff007b6de51ed80de","Human Augmentation Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Chiba, Kashiwa, Japan; College of Sport and Health Science, Ritsumeikan University, Shiga, Kusatsu, Japan; Department of Physical Therapy and Rehabilitation Science, University of Maryland School of Medicine, Baltimore, MD, United States","Fujimoto M., Human Augmentation Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Chiba, Kashiwa, Japan; Sato M., College of Sport and Health Science, Ritsumeikan University, Shiga, Kusatsu, Japan; Nagano A., College of Sport and Health Science, Ritsumeikan University, Shiga, Kusatsu, Japan; Rogers M.W., Department of Physical Therapy and Rehabilitation Science, University of Maryland School of Medicine, Baltimore, MD, United States; Isaka T., College of Sport and Health Science, Ritsumeikan University, Shiga, Kusatsu, Japan","Preparatory lower-limb loading conditions may affect the jump-to-reach performance of soccer goalkeepers. This study investigated the effect of pre-jump lower-limb loading/unloading during bilateral knee flexion–extension movements on sideways jump-to-reach performance in 18 male collegiate soccer goalkeepers. Participants performed the two-choice (high and low targets) reaction-time single-leg jump-to-reach task under two conditions: without preparatory movements (no-prep) and with continuous alternating knee extension and flexion movements (prep). The ‘go’ cue was provided with different preparatory loading conditions during the pre-jump knee extension and flexion phases. Performance was assessed using three-dimensional kinematic data and ground reaction forces. A significant main effect of the preparatory condition was observed for the jump take-off time. Pairwise comparisons revealed that the jump take-off time was 3.4–4.4% faster when initiated during the knee flexion phase than the no-prep condition and the extension phase (p ≤.028). Increasing lower-limb loading and downward body movement with knee flexion appeared to facilitate effective loading to take-off to reach the high target and faster downward-directed take-off to reach the low target, respectively. Pre-jump knee flexion movement could be utilised by soccer goalkeepers to facilitate faster take-off to maximise their chances of saving shots within the reach of single-leg side-jumping. © 2023 International Society of Biomechanics in Sports.","Biomechanics; football; ground reaction force; lower-limb loading; preparatory movement","adult; article; biomechanics; body movement; controlled study; football; ground reaction force; human; human experiment; jumping; knee function; lower limb; male; reaction time; soccer","Afschrift M., van Deursen R., De Groote F., Jonkers I., Increased use of stepping strategy in response to medio-lateral perturbations in the elderly relates to altered reactive tibialis anterior activity, Gait & Posture, 68, pp. 575-582, (2019); Bar-Eli M., Azar O.H., Penalty kicks in soccer: An empirical analysis of shooting strategies and goalkeepers’ preferences, Soccer and Society, 10, 2, pp. 183-191, (2009); Bell A.L., Brand R.A., Pedersen D.R., Prediction of hip-joint center location from external landmarks, Journal of Biomechanics, 20, 9, (1987); 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Winter D.A., Biomechanics and motor control of human movement, (1990)","M. Fujimoto; Human Augmentation Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Kashiwa, Chiba, Japan; email: masahiro-fujimoto@aist.go.jp","","Routledge","14763141","","","","English","Sports Biomech.","Article","Article in press","","Scopus","2-s2.0-85152446583" "Frontani F.; Prenassi M.; Paolini V.; Formicola G.; Marceglia S.; Policastro F.","Frontani, Francesco (57503038600); Prenassi, Marco (57203982215); Paolini, Viviana (57506759300); Formicola, Giovanni (58170404000); Marceglia, Sara (22035883100); Policastro, Francesca (57221107900)","57503038600; 57203982215; 57506759300; 58170404000; 22035883100; 57221107900","Dominant and Nondominant Leg Kinematics During Kicking in Young Soccer Players: A Cross-Sectional Study","2023","Motor Control","27","2","","327","337","10","0","10.1123/mc.2022-0017","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85151575187&doi=10.1123%2fmc.2022-0017&partnerID=40&md5=f50b68d90befedfcfe62bfaec859f79e","Saint Camillus International University of Health Sciences, Rome, Italy; Department of Engineering and Architecture, University of Trieste, Trieste, Italy; Department of Medical and Health Sciences, University of Trieste, Trieste, Italy","Frontani F., Saint Camillus International University of Health Sciences, Rome, Italy; Prenassi M., Department of Engineering and Architecture, University of Trieste, Trieste, Italy; Paolini V., Department of Engineering and Architecture, University of Trieste, Trieste, Italy; Formicola G., Department of Medical and Health Sciences, University of Trieste, Trieste, Italy; Marceglia S., Department of Engineering and Architecture, University of Trieste, Trieste, Italy; Policastro F., Department of Medical and Health Sciences, University of Trieste, Trieste, Italy","The goal of the study is to analyze the kinematics and provide an EMG analysis of the support limb during an instep kick in adolescent players. We set a video camera, two torque transducers on the knee, and EMG sensors. A sample of 16 adolescent soccer players between 10 and 12 years old performed kicks. The kinematics shows a p = .039 on frontal plane (dominant 15.4 ± 1.8, nondominant 18.8 ± 1.7); the EMG analysis shows a p = .04 on muscular activation timing for the vastus medialis. A difference between the legs on the frontal plane emerges. Moreover, a huge difference on sagittal plane between the adolescent pattern and adult pattern exists (15° in adolescent population, 40° in adult population). The result shows a greater activation of the vastus medialis in the nondominant leg; probably, in this immature pattern, the adolescents use this muscle more than necessary. © 2023 Human Kinetics, Inc.","adolescents; EMG analysis; instep kick; kinematic; sport","Adolescent; Adult; Biomechanical Phenomena; Child; Cross-Sectional Studies; Humans; Leg; Lower Extremity; Soccer; adolescent; adult; article; clinical article; cross-sectional study; female; human; kinematics; male; muscle contraction; school child; soccer player; sport; vastus medialis muscle; biomechanics; child; cross-sectional study; leg; lower limb; physiology; soccer","Bigoni M., Turati M., Gandolla M., Augusti C.A., Pedrocchi A., La Torre A., Gaddi D., Balance in young male soccer players: Dominant versus non-dominant leg, Sport Sciences for Health, 13, 2, pp. 253-258, (2017); Bozkurt S., Coban M., Demircan U., The effect of football basic technical training using unilateral leg on bilateral leg transfer in male children, Journal of Physical Education, 31, 1, (2020); 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Read P.J., Oliver J.L., Croix M.B.D.S., Myer G.D., Lloyd R.S., Neuromuscular risk factors for knee and ankle ligament injuries in male youth soccer players, Sports Medicine, 46, 8, pp. 1059-1066, (2016); Scurr J.C., Abbott V., Ball N., Quadriceps EMG muscle activation during accurate soccer instep kicking, Journal of Sports Sciences, 29, 3, pp. 247-251, (2011); Shan G., Westerhoff P., Soccer: Full-body kinematic characteristics of the maximal instep soccer kick by male soccer players and parameters related to kick quality, Sports Biomechanics, 4, 1, pp. 59-72, (2005); Sinclair J., Fewtrell D., Taylor P.J., Bottoms L., Atkins S., Hobbs S.J., Threedimensional kinematic correlates of ball velocity during maximal instep soccer kicking in males, European Journal of Sport Science, 14, 8, pp. 799-805, (2014); Smith T., Gilleard W., Three-dimensional analysis of a lofted instep kick by male and female footballers, European Journal of Sport Science, 16, 1, pp. 57-64, (2016); Vieira L.H., Cunha S.A., Moraes R., Barbieri F.A., Aquino R., Oliveira L.D.P., Santiago P.R., Kicking performance in young U9 to U20 soccer players: Assessment of velocity and accuracy simultaneously, Research Quarterly for Exercise and Sport, 89, 2, pp. 210-220, (2018)","F. Frontani; Saint Camillus International University of Health Sciences, Rome, Italy; email: Francesco.frontani@unicamillus.org","","Human Kinetics Publishers Inc.","10871640","","","36448488","English","Mot. Control","Article","Final","","Scopus","2-s2.0-85151575187" "Corso M.; Liang C.; Tran S.; Howitt S.; Srbely J.; Mior S.A.","Corso, Melissa (57200602723); Liang, Carmen (57190217594); Tran, Steve (37032131700); Howitt, Scott (54585369500); Srbely, John (17136184000); Mior, Silvano A. (6602994863)","57200602723; 57190217594; 37032131700; 54585369500; 17136184000; 6602994863","The Immediate Effect of Spinal Manipulation on Ball Velocity and Neuromuscular Function during an Instep Kick in Former Varsity Soccer Players: A Feasibility Study","2022","Journal of Strength and Conditioning Research","36","9","","2558","2565","7","0","10.1519/JSC.0000000000003720","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85136636044&doi=10.1519%2fJSC.0000000000003720&partnerID=40&md5=51b085af34a421db9e5a401d06262a53","Department of Graduate Studies, Canadian Memorial Chiropractic College, North York, ON, Canada; Department of Health Sciences, University of Ontario Institute of Technology, Oshawa, ON, Canada; Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada","Corso M., Department of Graduate Studies, Canadian Memorial Chiropractic College, North York, ON, Canada; Liang C., Department of Graduate Studies, Canadian Memorial Chiropractic College, North York, ON, Canada, Department of Health Sciences, University of Ontario Institute of Technology, Oshawa, ON, Canada; Tran S., Department of Graduate Studies, Canadian Memorial Chiropractic College, North York, ON, Canada; Howitt S., Department of Graduate Studies, Canadian Memorial Chiropractic College, North York, ON, Canada; Srbely J., Department of Graduate Studies, Canadian Memorial Chiropractic College, North York, ON, Canada, Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada; Mior S.A., Department of Graduate Studies, Canadian Memorial Chiropractic College, North York, ON, Canada, Department of Health Sciences, University of Ontario Institute of Technology, Oshawa, ON, Canada","Corso, M, Liang, L, Tran, S, Howitt, S, Srbely, J, and Mior, SA. The immediate effect of spinal manipulation on ball velocity and neuromuscular function during an instep kick in former Varsity soccer players: A feasibility study. J Strength Cond Res 36(9): 2558-2565, 2022-Spinal manipulation (SM) has been shown to increase ball velocity (BV) in soccer players. Evidence suggests that SM modulates responses at spinal or cortical levels to enhance force production in asymptomatic populations. No studies have explored the underlying neuromuscular mechanisms contributing to changes in BV post-SM in soccer players. We assessed the feasibility of measuring change in BV and neuromuscular function after SM in former Varsity level soccer players with a pre-post study design. Three to 5 maximal instep kicks were performed before and after SM at the L3-5 level. Ball velocity was measured using high-speed camera. Activation of lower limb and trunk musculature was recorded with electromyography. Outcomes included ease of recruitment, scheduling and data capture, as well as expectation and perception of SM effect and adverse events (AE). Fifteen potential subjects were recruited over 1.5 months. Eleven were scheduled (24-31 years; 8 females, 3 males). Two subjects reported mild AE after maximal voluntary isometric contraction testing. A significant increase in BV (mean change: 1.75 m·s-1[95% confidence interval: 0.5-3.0]) and a trend to increased peak-Activation of knee extensors (90.7%) were observed post-SM. Findings suggest that our recruitment strategy and methodology are feasible in a larger trial with some modifications. Our preliminary findings support previous research by suggesting that increased BV may be mediated through increased activation of knee extensors during the kick. Our findings may offer additional insight into the underlying neuromuscular mechanisms contributing to immediate change in BV post-SM. © 2022 NSCA National Strength and Conditioning Association. All rights reserved.","asymptomatic; ball speed; healthy; manual therapy; muscle activation","Biomechanical Phenomena; Feasibility Studies; Female; Foot; Humans; Male; Manipulation, Spinal; Soccer; biomechanics; feasibility study; female; foot; human; male; physiology; soccer; spine manipulation","Amiri-Khorasani M., Osman N.A.A., Yusof A., Biomechanical responses of thigh and lower leg during 10 consecutive soccer instep kicks, J Strength Cond Res, 25, pp. 1177-1181, (2011); Andersen T.B., Dorge H.C., The influence of speed of approach and accuracy constraint on the maximal speed of the ball in soccer kicking, Scand J Med Sci Sports, 21, pp. 79-84, (2011); Apriantono T., Nunome H., Ikegami Y., Sano S., The effect of muscle fatigue on instep kicking kinetics and kinematics in association football, J Sports Sci, 24, pp. 951-960, (2006); Bialoski J.E., Bishop M.D., Robinson M.E., The relationship of the audible pop to hypoalgesia associated with high velocity, low amplitude thrust manipulation: A secondary analysis of an experimental study in pain free participants, J Manipulative Physiol Ther, 33, pp. 117-124, (2010); Blazevich A.J., Babault N., Post-Activation potentiation versus post-Activation performance enhancement in humans: Historical perspective, underlying mechanisms, and current issues, Front Physiol, 10, (2019); Botelho M.B., Andrade B.B., Effect of cervical spine manipulative therapy on judo athletes' grip strength, J Manipulative Physiol Ther, 35, pp. 38-44, (2012); Botelho M.B., Alvarenga B.A.P., Molina N., Ribas M., Baptista A.F., Spinal manipulative therapy and sports performance enhancement: A systematic review, J Manipulative Physiol Ther, 40, pp. 535-543, (2017); Cerqueira M.S., Sales R.M., High-velocity low-Amplitude manipulation (thrust) and athletic performance: A systematic review, Fisioter em Mov, 30, pp. 413-422, (2017); Christiansen T.L., Niazi I.K., Holt K., The effects of a single session of spinal manipulation on strength and cortical drive in athletes, Eur J Appl Physiol, 118, pp. 737-749, (2018); Corso M., Mior S.A., Batley S., The effects of spinal manipulation on performance-related outcomes in healthy asymptomatic adult population: A systematic review of best evidence, Chiropr Man Ther, 27, (2019); 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Tillin N., Bishop D., Factors modulating post-Activation potentiation and its effect on performance of subsequent explosive activities, Sports Med, 39, pp. 147-166, (2009); Yu X., Wang X., Zhang J., Wang Y., Changes in pressure pain thresholds and basal electromyographic activity after instrument-Assisted spinal manipulative therapy in asymptomatic participants: A randomized, controlled trial, J Manipulative Physiol Ther, 35, pp. 437-445, (2012)","M. Corso; Department of Graduate Studies, Canadian Memorial Chiropractic College, North York, Canada; email: mcorso.dc@gmail.com","","NSCA National Strength and Conditioning Association","10648011","","","32826833","English","J. Strength Cond. Res.","Article","Final","","Scopus","2-s2.0-85136636044" "Wakahara T.; Chiba M.","Wakahara, Taku (16647524600); Chiba, Manabu (57202150214)","16647524600; 57202150214","Relation between Iliopsoas Cross-sectional Area and Kicked Ball Speed in Soccer Players","2018","International Journal of Sports Medicine","39","6","","468","472","4","0","10.1055/a-0592-7370","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85047310175&doi=10.1055%2fa-0592-7370&partnerID=40&md5=5a1a18e74df53abd9bb9899b94639181","Faculty of Health and Sports Science, Doshisha University, 1-3 Tatara Miyakodani, Kyotanabe, Japan","Wakahara T., Faculty of Health and Sports Science, Doshisha University, 1-3 Tatara Miyakodani, Kyotanabe, Japan; Chiba M., Faculty of Health and Sports Science, Doshisha University, 1-3 Tatara Miyakodani, Kyotanabe, Japan","This study aimed to investigate the relationship between the maximal anatomical cross-sectional area (ACSA) of the iliopsoas muscle and ball speed in side-foot and instep kicks. The ACSA of the psoas major and iliacus was measured in 29 male collegiate soccer players by using magnetic resonance imaging. They performed maximal side-foot and instep kicks to a stationary ball. The kicked ball speed was measured with a high-speed camera. Ball speed in the side-foot and instep kicks was significantly correlated with body height (side-foot kick: r=0.650, P<0.001; instep kick: r=0.583, P<0.001). After adjustment for body height, the maximal ACSA of the psoas major was significantly correlated with ball speed in the side-foot kick (r=0.441, P=0.017), but not in the instep kick. The maximal ACSA of the iliacus was not correlated with ball speed in side-foot or instep kicks, even after adjustment for body height. Our results suggest that: 1) body height is a significant determinant of the ball speed in side-foot and instep kicks, and 2) for a given body height, the maximal ACSA of the dominant psoas major is a factor that affects the ball speed in side-foot kick. © 2018 Georg Thieme Verlag. All rights reserved.","body height; hip joint; magnetic resonance imaging","Acceleration; Biomechanical Phenomena; Body Height; Hip; Humans; Magnetic Resonance Imaging; Muscle, Skeletal; Soccer; Sports Equipment; Young Adult; acceleration; biomechanics; body height; diagnostic imaging; hip; human; nuclear magnetic resonance imaging; physiology; skeletal muscle; soccer; sports equipment; young adult","Andersen T.B., Dorge H.C., Thomsen F.I., Collisions in soccer kicking, Sports Eng, 2, pp. 121-125, (1999); Blemker S.S., Delp S.L., Three-dimensional representation of complex muscle architectures and geometries, Ann Biomed Eng, 33, pp. 661-673, (2005); Brophy R.H., Backus S., Kraszewski A.P., Steele B.C., Ma Y., Osei D., Williams R.J., Differences between sexes in lower extremity alignment and muscle activation during soccer kick, J Bone Joint Surg Am, 92, pp. 2050-2058, (2010); Brophy R.H., Backus S.I., Pansy B.S., Lyman S., Williams R.J., Lower extremity muscle activation and alignment during the soccer instep and side-foot kicks, J Orthop Sports Phys Ther, 37, pp. 260-268, (2007); Cometti G., Maffiuletti N.A., Pousson M., Chatard J.C., Maffulli N., Isokinetic strength and anaerobic power of elite, subelite and amateur French soccer players, Int J Sports Med, 22, pp. 45-51, (2001); Dorge H.C., Andersen T.B., Sorensen H., Simonsen E.B., Aagaard H., Dyhre-Poulsen P., Klausen K., EMG activity of the iliopsoas muscle and leg kinetics during the soccer place kick, Scand J Med Sci Sports, 9, pp. 195-200, (1999); Harriss D.J., Macsween A., Atkinson G., Standards for ethics in sport and exercise science research: 2018 Update, Int J Sports Med, 38, pp. 1126-1131, (2017); Hides J., Fan T., Stanton W., Stanton P., McMahon K., Wilson S., Psoas and quadratus lumborum muscle asymmetry among elite Australian Football League players, Br J Sports Med, 44, pp. 563-567, (2010); Hoshikawa Y., Iida T., Ii N., Muramatsu M., Nakajima Y., Chumank K., Kanehisa H., Cross-sectional area of psoas major muscle and hip flexion strength in youth soccer players, Eur J Appl Physiol, 112, pp. 3487-3494, (2012); Juker D., McGill S., Kropf P., Steffen T., Quantitative intramuscular myoelectric activity of lumbar portions of psoas and the abdominal wall during a wide variety of tasks, Med Sci Sports Exerc, 30, pp. 301-310, (1998); Kawamoto R., Miyagi O., Ohashi J., Fukashiro S., Biomechanical study of mechanism of speed-accuracy trade-off in a side-foot soccer kick, Jpn J Biomech Sports Exerc, 10, pp. 235-244, (2006); Kawamoto R., Miyagi O., Ohashi J., Fukashiro S., Kinetic comparison of a side-foot soccer kick between experienced and inexperienced players, Sports Biomech, 6, pp. 187-198, (2007); Kubo T., Muramatsu M., Hoshikawa Y., Kanehisa H., Profiles of trunk and thigh muscularity in youth and professional soccer players, J Strength Cond Res, 24, pp. 1472-1479, (2010); Levanon J., Dapena J., Comparison of the kinematics of the full-instep and pass kicks in soccer, Med Sci Sports Exerc, 30, pp. 917-927, (1998); Luhtanen P., Reilly T., Lees A., Davids K., Murphy W.J., Kinematics and Kinetics of Maximal Instep Kicking in Junior Soccer Players, pp. 441-448, (1988); Markovic G., Jaric S., Movement performance and body size: The relationship for different groups of tests, Eur J Appl Physiol, 92, pp. 139-149, (2004); Masuda K., Kikuhara N., Demura S., Katsuta S., Yamanaka K., Relationship between muscle strength in various isokinetic movements and kick performance among soccer players, J Sports Med Phys Fitness, 45, pp. 44-52, (2005); Masuda K., Kikuhara N., Takahashi H., Yamanaka K., The relationship between muscle cross-sectional area and strength in various isokinetic movements among soccer players, J Sports Sci, 21, pp. 851-858, (2003); McLean B.D., Tumilty D.M., Left-right asymmetry in two types of soccer kick, Br J Sports Med, 27, pp. 260-262, (1993); Mognoni P., Narici M.V., Sirtori M.D., Lorenzelli F., Isokinetic torques and kicking maximal ball velocity in young soccer players, J Sports Med Phys Fitness, 34, pp. 357-361, (1994); Nunome H., Asai T., Ikegami Y., Sakurai S., Three-dimensional kinetic analysis of side-foot and instep soccer kicks, Med Sci Sports Exerc, 34, pp. 2028-2036, (2002); Putnam C.A., A segment interaction analysis of proximal-to-distal sequential segment motion patterns, Med Sci Sports Exerc, 23, pp. 130-144, (1991); Sanchis-Moysi J., Idoate F., Izquierdo M., Calbet J.A., Dorado C., Iliopsoas and gluteal muscles are asymmetric in tennis players but not in soccer players, PLoS One, 6, (2011); Stewart S., Stanton W., Wilson S., Hides J., Consistency in size and asymmetry of the psoas major muscle among elite footballers, Br J Sports Med, 44, pp. 1173-1177, (2010)","T. Wakahara; Faculty of Health and Sports Science, Doshisha University, Kyotanabe, 1-3 Tatara Miyakodani, Japan; email: twakahar@mail.doshisha.ac.jp","","Georg Thieme Verlag","01724622","","IJSMD","29758569","English","Int. J. Sports Med.","Article","Final","","Scopus","2-s2.0-85047310175" "Schrier N.; Wannop J.W.; Worobets J.T.; Stefanyshyn D.J.","Schrier, Nicole (55798544100); Wannop, John William (36105346700); Worobets, Jay T. (15062076800); Stefanyshyn, Darren J. (6701771084)","55798544100; 36105346700; 15062076800; 6701771084","Influence of Compliance and Aging of Artificial Turf Surfaces on Lower Extremity Joint Loading","2022","Biomechanics (Switzerland)","2","1","","66","75","9","0","10.3390/biomechanics2010007","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85176592896&doi=10.3390%2fbiomechanics2010007&partnerID=40&md5=3ead6a8774722f33f6ab7e57614563ce","Human Performance Lab, Faculty of Kinesiology, University of Calgary, Calgary, T2N 1N4, AB, Canada","Schrier N., Human Performance Lab, Faculty of Kinesiology, University of Calgary, Calgary, T2N 1N4, AB, Canada; Wannop J.W., Human Performance Lab, Faculty of Kinesiology, University of Calgary, Calgary, T2N 1N4, AB, Canada; Worobets J.T., Human Performance Lab, Faculty of Kinesiology, University of Calgary, Calgary, T2N 1N4, AB, Canada; Stefanyshyn D.J., Human Performance Lab, Faculty of Kinesiology, University of Calgary, Calgary, T2N 1N4, AB, Canada","Background: Artificial turf (AT) has been related to increased injury rates when compared to natural grass (NG). One potential reason for the differences in injury rates is the difference in mechanical characteristics of the surfaces. Over the course of a season on artificial turf, due to heavy use and environmental factors, properties of the surface (such as compliance) may be altered. The purpose was to compare the effects of newly installed versus aged AT on injury risks at the metatarsophalangeal, ankle, and knee joint during soccer-specific movements. Methods: Eleven male soccer players performed three movements on newly installed and ‘aged’ AT. Kinematics and kinetics were collected for the different surfaces. Results: Knee adduction moments were increased during the v-cut (119 Nm vs. 164 Nm, p = 0.02), and knee external rotation joint moments were increased during the circle run (23 Nm vs. 28 Nm, p = 0.04) with the aged surface. No surface effects were seen during the jog-sprint transition. Conclusions: For movements associated with a high risk for non-contact injuries, the age of the AT resulted in greater risk factors for injury potential at the knee joint. Further research comparing injury rates associated with AT should consider mechanical features, specifically surface compliance. © 2022 by the authors.","artificial turf; biomechanics; compliance; sports science; stiffness; surfaces","","Adkinson J.W., Requa R.K., Garrick J.G., Injury rates in high school football, Clin. Orthop. Relat. R, 99, pp. 131-136, (1974); Bowers K.D., Martin R.B., Turf-toe: A shoe-surface related football injury, Med. Sci. Sports, 8, pp. 81-83, (1976); James S.L., Bates B.T., Osternig L.R., Injuries to runners, Am. J. Sport Med, 6, pp. 40-50, (1978); Cavanagh P.R., Lafortune M.A., Ground reaction forces in distance running, J. 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Sport Med, 41, pp. i27-i32, (2007); Steffen K., Andersen T.E., Bahr R., Risk of injury on artificial turf and natural grass in young female football players, Br. J. Sport Med, 41, pp. i33-i37, (2007); Aoki H., Kohno T., Fujiya H., Kato H., Yatabe K., Morikawa T., Seki J., Incidence of injury among adolescent soccer players: A comparative study of artificial and natural grass turfs, Clin. J. Sport Med, 20, pp. 1-7, (2010); Bjorneboe J., Bahr R., Andersen T.E., Risk of injury on third-generation artificial turf in Norwegian professional football, Br. J. Sport Med, 44, pp. 794-798, (2010); Ekstrand J., Hagglund M., Fuller C.W., Comparison of injuries sustained on artificial turf and grass by male and female elite football players, Scand. J. Med. Sci. Sport, 21, pp. 824-832, (2011); Wannop J.W., Luo G., Stefanyshyn D.J., Footwear traction and lower extremity noncontact injury, Med. Sci. Sport Exer, 45, pp. 2137-2143, (2013); Mack C.D., Kent R.W., Coughlin M.J., Shiue K.Y., Weiss L.J., Jastifer J.R., Wojtys E.M., Anderson R.B., Incidence of lower extremity injury in the National Football League: 2015 to 2018, Am. J. Sport Med, 48, pp. 2287-2294, (2020); Sanchez-Sanchez J., Felipe J.L., Burillo P., del Corral J., Gallardo L., Effect of the structural components of support on the loss of mechanical properties of football fields of artificial turf, PI Mech. Eng. PJ Sport, 228, pp. 155-164, (2014); Wannop J.W., Luo G., Stefanyshyn D.J., Footwear traction at different areas on artificial turf and natural grass surfaces, Sports Eng, 15, pp. 111-116, (2012); Luo G., Stefanyshyn D., Identification of critical traction values for maximum athletic performance, Footwear Sci, 3, pp. 127-138, (2011); Schrier N.M., Wannop J.W., Lewinson R.T., Worobets J.T., Stefanyshyn D., Shoe traction and surface compliance affect performance of soccer-related movements, Footwear Sci, 6, pp. 69-80, (2014); Worobets J., Wannop J.W., Influence of basketball shoe mass, outsole traction, and forefoot bending stiffness on three athletic movements, Sport Biomech, 14, pp. 351-360, (2015); Lambson R.B., Barnhill B.S., Higgins R.W., Football cleat design and its effect on anterior cruciate ligament injuries: A three-year prospective study, Am. J. 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Sport Med, 34, pp. 1844-1851, (2006); Shin C.S., Chaudhari A.M., Andriacchi T.P., The effect of isolated valgus moments on ACL strain during single-leg landing: A simulation study, J. Biomech, 42, pp. 280-285, (2008); Hurwitz D.E., Sumner D.R., Andriacchi T.P., Sugar D.A., Dynamic knee loads during gait predict proximal tibial bone distribution, J. Biomech, 31, pp. 423-430, (1998); Thorp L.E., Sumner D.R., Block J.A., Moisio K.C., Shott S., Wimmer M.A., Knee joint loading differs in individuals with mild compared with moderate medial knee osteoartritis, Arthritis Rheumatol, 54, pp. 3842-3849, (2006); ASTM F355 Standard Test Method for Impact Attenuation of Playing Surface Systems and Materials 2010, (2010); Rodeo S.A., O'Brien S., Warren R.F., Barnes R., Wickiewicz T.L., Dillingham M.F., Turf-toe: An analysis of metatarsophalangeal joint sprains in professional football players, Am. J. Sport Med, 18, pp. 280-285, (1990); Cohen J., A power primer, Psychol. Bull, 112, pp. 155-159, (1992); Dunlap W.P., Crtina J.M., Vaslow J.B., Burke M.J., Meta-analysis of experiments with matched groups or repeated measures designs, Psychol. Methods, 1, pp. 170-177, (1996)","J.W. Wannop; Human Performance Lab, Faculty of Kinesiology, University of Calgary, Calgary, T2N 1N4, Canada; email: b.wannop@ucalgary.ca","","Multidisciplinary Digital Publishing Institute (MDPI)","26737078","","","","English","Biomechanics","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85176592896" "Ren Y.; Wang G.; Zhang L.; Lu A.; Wang C.","Ren, Yuanyuan (57362819200); Wang, Guodong (55738729900); Zhang, Lei (57196130765); Lu, Aming (37073044600); Wang, Cenyi (57224205897)","57362819200; 55738729900; 57196130765; 37073044600; 57224205897","Perceptual-Cognitive Tasks Affect Landing Performance of Soccer Players at Different Levels of Fatigue","2022","Applied Bionics and Biomechanics","2022","","4282648","","","","0","10.1155/2022/4282648","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85133058265&doi=10.1155%2f2022%2f4282648&partnerID=40&md5=6170c2dc7461b4b5afc21ca7cc9c1b47","Physical Education and Sport Science, Soochow University, China","Ren Y., Physical Education and Sport Science, Soochow University, China; Wang G., Physical Education and Sport Science, Soochow University, China; Zhang L., Physical Education and Sport Science, Soochow University, China; Lu A., Physical Education and Sport Science, Soochow University, China; Wang C., Physical Education and Sport Science, Soochow University, China","Background. There is a possible interaction between the underlying mechanisms of perceptual-cognitive tasks and motor control. For example, landing biomechanics changed during perceptual-cognitive tasks undertaken at different levels of fatigue of the athlete. Thus, this study explored the effect of perception-cognitive tasks interventions on male soccer players' landing mechanisms at different levels of fatigue. Methods. Perceptual-cognitive tasks during games were simulated using classic multiple object tracking (MOT) paradigms, and 15 male soccer players completed MOT tasks under nonfatigue (NF), moderate fatigue (MF), and severe fatigue (SF). Landing-associated indicators were collected and calculated using a Vicon and force measuring platform. Results. Level of fatigue and MOT task significantly affected hip and knee flexion angles, hip and knee extension moments, and vertical ground reaction force. Specifically, hip and knee flexion angles were significantly higher in MOT than non-MOT tasks at all levels of fatigue. In NF state, hip and knee extension moments were significantly smaller during MOT than non-MOT tasks. In SF state, the hip extension moment was larger during MOT than non-MOT tasks. In both MF and SF states, vertical ground reaction force was significantly higher in MOT than non-MOT tasks. Conclusion. Although soccer players landed cautiously when not fatigued, they were significantly less able to do this and handle challenging perceptual-cognitive task movements when fatigued. Thus, landing performance is affected by perceptual-cognitive task interference in fatigue conditions. © 2022 Yuanyuan Ren et al.","","Landing; Physiological models; Sports; Ground reaction forces; Hip and knee extensions; Hip and knees; Hip flexion; Knee flexion angle; Multiple object tracking; Perceptual-cognitive task; Performance; Soccer player; Task control; adult; Article; biomechanics; controlled study; fatigue; force; ground reaction force; hip; human; human experiment; knee function; male; motor control; normal human; perception; simulation; soccer; soccer player; student athlete; Biophysics","Alvarez G.A., Cavanagh P., Independent resources for attentional tracking in the left and right visual hemifields, Psychological Science, 16, 8, pp. 637-643, (2005); Romeas T., Guldner A., Faubert J., 3D-multiple object tracking training task improves passing decision-making accuracy in soccer players, Psychology of Sport and Exercise, 22, pp. 1-9, (2016); Pothier K., Benguigui N., Kulpa R., Chavoix C., Multiple object tracking while walking: Similarities and differences between young, young-old, and old-old adults, The Journals of Gerontology Series B: Psychological Sciences and Social Sciences, 70, 6, pp. 840-849, (2015); Ehmann P., Beavan A., Spielmann J., Ruf L., Mayer J., Rohrmann S., Nuss C., Englert C., 360 degrees-multiple object tracking in team sport athletes: Reliability and relationship to visuospatial cognitive functions, Psychology of Sport & Exercise, 55, (2021); Mejane J., Faubert J., Romeas T., Labbe D.R., The combined impact of a perceptual-cognitive task and neuromuscular fatigue on knee biomechanics during landing, The Knee, 26, 1, pp. 52-60, (2019); Lacour M., Bernard-Demanze L., Dumitrescu M., Posture control, aging, and attention resources: Models and posture-analysis methods[J], Neurophysiologie Clinique, 38, 6, pp. 411-421, (2008); Huxhold O., Li S.C., Schmiedek F., Lindenberger U., Dual-tasking postural control: Aging and the effects of cognitive demand in conjunction with focus of attention[J], Brain Research Bulletin, 69, 3, pp. 294-305, (2006); Bourke M., Hilland T.A., Craike M., Variance in the valenced response during moderate-to-vigorous physical activity: A review of cognitive and contextual mechanisms, International Review of Sport and Exercise Psychology, 14, 1, pp. 154-185, (2021); 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Wilke J., Giesche F., Niederer D., Engeroff T., Barabas S., Troller S., Vogt L., Banzer W., Increased visual distraction can impair landing biomechanics, Biology of Sport, 38, 1, pp. 110-127, (2021); Hughes G., Gender Differences in Intra-Limb Coordination during Single Limb Landings on Dominant and Non-dominant Legs, Journal of Human Sport and Exercise, 15, 1, pp. 14-22, (2020); Jacobs C.A., Uhl T.L., Mattacola C.G., Shapiro R., Rayens W.S., Hip abductor function and lower extremity landing kinematics, Sex Differences, 42, 1, pp. 76-83, (2007); Jenkins W.L., Williams D.S.B., Williams K., Hefner J., Welch H., Sex differences in total frontal plane knee movement and velocity during a functional single-leg landing, Physical Therapy in Sport, 24, pp. 1-6, (2017); Ren Y., Wang C., Zhang L., Lu A., The effects of visual cognitive tasks on landing stability and lower extremity injury risk in high-level soccer players, Gait & Posture, 92, pp. 230-235, (2022); Shan X.H., Ding M., Theoretical discussion and experimental evaluation of the vertical jump height and time to vacate calculation method, Chinese Clinical Rehabilitation, 8, 24, pp. 5103-5111, (2004); Cortes N., Greska E., Kollock R., Ambegaonkar J., Onate J.A., Changes in lower extremity biomechanics due to a short-term fatigue protocol, Journal of Athletic Training, 48, 3, pp. 306-313, (2013); Cerulli G., Benoit D.L., Lamontagne M., Caraffa A., Liti A., In vivo anterior cruciate ligament strain behaviour during a rapid deceleration movement: Case report, Knee Surgery, Sports Traumatology, Arthroscopy, 11, 5, pp. 307-311, (2003); Yom J.P., Owens T., Arnett S., Beebe J., Son V., The effects of an unanticipated side-cut on lower extremity kinematics and ground reaction forces during a drop landing, Sports Biomechanics, 18, 4, pp. 414-425, (2019); Sinsurin K., Vachalathiti R., Srisangboriboon S., Richards J., Knee joint coordination during single-leg landing in different directions, Sports Biomechanics, 19, 5, pp. 652-664, (2020); Wang J.Q., Fu W.J., Asymmetry between the dominant and non-dominant legs in the lower limb biomechanics during single-leg landings in females, Advances in Mechanical Engineering, 11, 5, (2019); Van Der Harst J.J., Gokeler A., Hof A.L., Leg kinematics and kinetics in landing from a single-leg hop for distance, A Comparison between Dominant and Non-Dominant Leg, 22, 6, pp. 674-680, (2007); Rahnama N., Reilly T., Lees A., Injury risk associated with playing actions during competitive soccer, British Journal of Sports Medicine, 36, 5, pp. 354-359, (2002); Dai B., Garrett W.E., Gross M.T., Padua D.A., Queen R.M., Yu B., The effect of performance demands on lower extremity biomechanics during landing and cutting tasks, Journal of Sport and Health Science, 8, 3, pp. 228-234, (2019); Olson M.W., Static loading of the knee joint results in modified single leg landing biomechanics, PLoS One, 15, 2, pp. 1-16, (2020); Chappell J.D., Herman D.C., Knight B.S., Kirkendall D.T., Garrett W.E., Yu B., Effect of fatigue on knee kinetics and kinematics in stop-jump tasks, The American Journal of Sports Medicine, 33, 7, pp. 1022-1029, (2005); Shimokochi Y., Ambegaonkar J.P., Meyer E.G., Changing sagittal-plane landing styles to modulate impact and tibiofemoral force magnitude and directions relative to the tibia, Journal of Athletic Training, 51, 9, pp. 669-681, (2016); Pashler H., Dual-task interference in simple tasks: Data and theory, Psychological Bulletin, 116, 2, pp. 220-244, (1994); Li Y., Song Q., Li L., Sun W., Zhang C., Tai chi practitioners have lower fall risks under dual-task conditions during stair descending, PLoS One, 16, 2, pp. 1-11, (2021); Nirit S.D., Eli S., Trapped in a daydream: Daily elevations in maladaptive daydreaming are associated with daily psychopathological symptoms, Frontiers in Psychiatry, 9, 194, pp. 1-14, (2018); Zenon A., Sidibe M., Olivier E., Disrupting the supplementary motor area makes physical effort appear less effortful, Journal of Neuroscience, 35, 23, pp. 8737-8744, (2015); McMorris T., Ba Rwood M., Corbett J., Central fatigue theory and endurance exercise: Toward an interoceptive model, Neuroscience & Biobehavioral Reviews, 93, pp. 93-107, (2018); Park S., Klotzbier T.J., Schott N., The effects of the combination of high-intensity interval training with 3D-multiple object tracking task on perceptual-cognitive performance: A randomized controlled intervention trial, International Journal of Environmental Research and Public Health, 18, 9, (2021)","A. Lu; Physical Education and Sport Science, Soochow University, China; email: luamingsu@126.com; C. Wang; Physical Education and Sport Science, Soochow University, China; email: cenyiwang@126.com","","Hindawi Limited","11762322","","","","English","Appl. Bionics Biomech.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85133058265" "Moura F.A.","Moura, Felipe Arruda (16417087000)","16417087000","THE VIDEO ASSISTANT REFEREE (VAR) IN SOCCER: WHERE IS THE BIOMECHANICS?; [ÁRBITRO ASSISTENTE DE VÍDEO (VAR) NO FUTEBOL: ONDE ESTÁ A BIOMECÂNICA?]","2023","Journal of Physical Education (Maringa)","34","1","e3435","","","","0","10.4025/jphyseduc.v34i1.3435","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85188504878&doi=10.4025%2fjphyseduc.v34i1.3435&partnerID=40&md5=d2a2a5523113eedf379f2c89084f76b5","State University of Londrina, PR, Londrina, Brazil","Moura F.A., State University of Londrina, PR, Londrina, Brazil","The aim of this article is to explore the basic principles of Biomechanics in relation to the objective measurements carried out by the Video Assistant Referee (VAR) operators and systems in soccer. It was presented an overall framework about the determination of kinematical variables, the definition and the sources of error, the understanding of factors contributing to errors in VAR decisions, and prospects for future solutions. To exemplify these concepts, the offside rule was chosen as it offers numerous instances of tools aiding for accurate measurements. Based on consolidated procedures of literature, a discussion about the actual challenges and an suggestions for a fully comprehension and improvement of VAR were provided. © 2023 Universidade Estadual de Maringa. All rights reserved.","Kinematics; Measurement error; Refereeing; Video technology","","Collins H, Evans R., You cannot be serious! Public understanding of technology with special reference to “Hawk-Eye”, Public Underst Sci, 17, 3, pp. 283-308, (2008); Robertson DGE, Caldwell GE, Hamill J, Kamen G, Whittlesey SN., Research methods in biomechanics, xii, (2014); Cappozzo A, Della Croce U, Leardini A, Chiari L., Human movement analysis using stereophotogrammetry. Part 1: theoretical background, Gait Posture, 21, 2, pp. 186-196, (2005); Chiari L, Della Croce U, Leardini A, Cappozzo A., Human movement analysis using stereophotogrammetry. Part 2: instrumental errors, Gait Posture, 21, 2, pp. 197-211, (2005); Burton K., Biomechanics of human movement: applications in rehabilitation, sports and ergonomics, Clin Biomech, 7, 4, (1992); Figueroa PJ, Leite NJ, Barros RML., Tracking soccer players aiming their kinematical motion analysis, Comput Vis Image Underst, 101, 2, pp. 122-135, (2006); Palucci Vieira LH, Santiago PRP, Pinto A, Aquino R, Torres RDS, Barbieri FA., Automatic Markerless Motion Detector Method against Traditional Digitisation for 3-Dimensional Movement Kinematic Analysis of Ball Kicking in Soccer Field Context, Int J Environ Res Public Health, 19, 3, (2022); Barros RML, Misuta MS, Menezes RP, Figueroa PJ, Moura FA, Cunha SA, Et al., Analysis of the distances covered by first division Brazilian soccer players obtained with an automatic tracking method, J Sports Sci Med, 6, (2007); Lara JPR, Vieira CLR, Misuta MS, Moura FA, RMLd Barros, Validation of a video-based system for automatic tracking of tennis players, Int J Perform Anal Sport, 18, 1, pp. 137-150, (2018); Vieira LHP, Pagnoca EA, Milioni F, Barbieri RA, Menezes RP, Alvarez L, Et al., Tracking futsal players with a wide-angle lens camera: accuracy analysis of the radial distortion correction based on an improved Hough transform algorithm, Comput Methods Biomech Biomed Eng: Imaging Vis, 5, 3, pp. 221-231, (2017); Rico-Gonzalez M, Pino-Ortega J, Nakamura FY, Arruda Moura F, Rojas-Valverde D, Los Arcos A., Past, present, and future of the technological tracking methods to assess tactical variables in team sports: A systematic review, Proc Inst Mech Eng P: J Sports Eng Technol, 234, 4, pp. 281-290, (2020); (2021); (2023); (2022); Lahkar BK, Muller A, Dumas R, Reveret L, Robert T., Accuracy of a markerless motion capture system in estimating upper extremity kinematics during boxing, Front Sports Act Living, 4, (2022); Buraimo B, Forrest D, Simmons R., The 12th man?: refereeing bias in English and German soccer, J R Stat Soc, A: Stat Soc, 173, 2, pp. 431-449, (2010); Buraimo B, Simmons ROB, Maciaszczyk M., Favoritism and referee bias in European soccer: evidence from the Spanish League and the UEFA Champions League, Contemp Econ Policy, 30, 3, pp. 329-343, (2012); Dawson P, Dobson S., The influence of social pressure and nationality on individual decisions: Evidence from the behaviour of referees, J Econ Psychol, 31, 2, pp. 181-191, (2010); Kranjec A, Lehet M, Bromberger B, Chatterjee A., A sinister bias for calling fouls in soccer, PLoS One, 5, 7, (2010); Nevill AM, Newell SM, Gale S., Factors associated with home advantage in English and Scottish soccer matches, J Sports Sci, 14, 2, pp. 181-186, (1996); Unkelbach C, Memmert D., Crowd noise as a cue in referee decisions contributes to the home advantage, J Sport Exerc Psychol; Spitz J, Wagemans J, Memmert D, Williams AM, Helsen WF., Video assistant referees (VAR): The impact of technology on decision making in association football referees, J Sports Sci, 39, 2, pp. 147-153, (2021); Albanese A, Baert S, Verstraeten O., Twelve eyes see more than eight. Referee bias and the introduction of additional assistant referees in soccer, PLoS One, 15, 2, (2020)","F.A. Moura; Londrina, Rodovia Celso Garcia Cid , PR 445 Km 380 , Campus Universitário Cx. Postal 10.011 , PR, CEP 86.057-970, Brazil; email: felipemoura@uel.br","","Universidade Estadual de Maringa","24482455","","","","English","J. Phys. Edu.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85188504878" "Papadakis Z.; Panoutsakopoulos V.; Kollias I.A.","Papadakis, Zacharias (56436671600); Panoutsakopoulos, Vassilios (6507381440); Kollias, Iraklis A. (6602722384)","56436671600; 6507381440; 6602722384","Predictive Value of Repeated Jump Testing on Nomination Status in Professional and under 19 Soccer Players","2022","International Journal of Environmental Research and Public Health","19","20","13077","","","","0","10.3390/ijerph192013077","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85140782669&doi=10.3390%2fijerph192013077&partnerID=40&md5=1c51eaccdae4a10709d88841f97c3bc8","Human Performance Laboratory, Department of Health Promotion and Clinical Practice, College of Health and Wellness, Barry University, Miami Shores, 33161, FL, United States; Biomechanics Laboratory, School of Physical Education and Sports Sciences at Thessaloniki, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece","Papadakis Z., Human Performance Laboratory, Department of Health Promotion and Clinical Practice, College of Health and Wellness, Barry University, Miami Shores, 33161, FL, United States; Panoutsakopoulos V., Biomechanics Laboratory, School of Physical Education and Sports Sciences at Thessaloniki, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece; Kollias I.A., Biomechanics Laboratory, School of Physical Education and Sports Sciences at Thessaloniki, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece","Soccer clubs invest time and money in multidimensional identification practices, but the field implementation is still problematic. The repeated vertical jump test (RVJ), as an alternative to the monodimensional vertical jump, may offer similar prognostic value. Therefore, the prognostic validity of 15 RVJ within professional (PRO, n = 24) and under 19 years old (U19, n = 20) Greek male soccer players was examined. T-test, binomial logistic regression, and receiver operating characteristic for prognostic validity of anthropometric and performance values in predicting PRO status were applied using Jamovi version 2.3.3.0. Significant group differences presented in body height and mass, body mass index (BMI), maximum and average jump height, and relative jump power. The predicting model was significant (x2(2) = 17.12, p < 0.001). Height and BMI were positive predictors of the PRO status (b = 21.66, p = 0.008 and b = 0.94, p = 0.014, respectively). The model was 73% accurate, 75% specific, and 71% sensitive, with excellent area under the curve. The RVJ test demonstrated outstanding discriminating prognostic validity. Until the applicability of the multidimensional models in predicting future player status is further established, field practitioners may use the simplistic RVJ testing to predict future status among male soccer players. © 2022 by the authors.","anaerobic jumping power; biomechanical analysis; performance; reactive strength index; talent identification; vertical jump; young players","Adult; Anthropometry; Athletic Performance; Body Height; Exercise Test; Humans; Male; Soccer; Young Adult; biomechanics; future prospect; identification key; movement; physical activity; prediction; sport; adult; area under the curve; article; body height; body mass; clinical article; controlled study; Greek (citizen); human; jumping; male; physician; predictive value; receiver operating characteristic; soccer player; validity; anthropometry; athletic performance; exercise test; procedures; soccer; young adult","Bradley P.S., Sheldon W., Wooster B., Olsen P., Boanas P., Krustrup P., High-intensity running in English FA Premier League soccer matches, J. 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Sports Sci, 30, pp. 1719-1726, (2012); Gil S.M., Gil J., Ruiz F., Irazusta A., Irazusta J., Physiological and anthropometric characteristics of young soccer players according to their playing position: Relevance for the selection process, J. Strength Cond. Res, 21, pp. 438-445, (2007); Gil S., Ruiz F., Irazusta A., Gil J., Irazusta J., Selection of young soccer players in terms of anthropometric and physiological factors, J. Sports Med. Phys. Fit, 47, pp. 25-32, (2007); Lago-Penas C., Rey E., Casais L., Gomez-Lopez M., Relationship between performance characteristics and the selection process in youth soccer players, J. Hum. Kinet, 40, pp. 189-199, (2014); Castagna C., Castellini E., Vertical jump performance in Italian male and female national team soccer players, J. Strength Cond. 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Sport Exerc, 43, pp. 27-33, (2019); Ramirez H.E., Seasonal Variation in Anthropometric and Performance Variables in American Professional Soccer Players, Master’s Thesis, (2022); Clemente F.M., Ramirez-Campillo R., Sarmento H., Detrimental Effects of the Off-Season in Soccer Players: A Systematic Review and Meta-analysis, Sports Med, 51, pp. 795-814, (2021); Silva J.R., Magalhaes J.F., Ascensao A.A., Oliveira E.M., Seabra A.F., Rebelo A.N., Individual match playing time during the season affects fitness-related parameters of male professional soccer players, J. Strength Cond. Res, 25, pp. 2729-2739, (2011); Craig T.P., Swinton P., Anthropometric and physical performance profiling does not predict professional contracts awarded in an elite Scottish soccer academy over a 10-year period, Eur. J. Sport Sci, 21, pp. 1101-1110, (2021); Arnason A., Sigurdsson S.B., Gudmundsson A., Holme I., Engebretsen L., Bahr R., Physical fitness, injuries, and team performance in soccer, Med. Sci. 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Sci, 31, pp. 344-359, (2012); Bergkamp T.L.G., Niessen A.S.M., den Hartigh R.J.R., Frencken W.G.P., Meijer R.R., Methodological Issues in Soccer Talent Identification Research, Sports Med, 49, pp. 1317-1335, (2019); Ackerman P.L., Nonsense, common sense, and science of expert performance: Talent and individual differences, Intelligence, 45, pp. 6-17, (2014); Austin P.C., Merlo J., Intermediate and advanced topics in multilevel logistic regression analysis, Stat. Med, 36, pp. 3257-3277, (2017); Phillips E., Davids K., Renshaw I., Portus M., Expert performance in sport and the dynamics of talent development, Sports Med, 40, pp. 271-283, (2010); Chalitsios C., Nikodelis T., Panoutsakopoulos V., Chassanidis C., Kollias I., Classification of Soccer and Basketball Players’ Jumping Performance Characteristics: A Logistic Regression Approach, Sports, 7, (2019); DeLong E.R., DeLong D.M., Clarke-Pearson D.L., Comparing the areas under two or more correlated receiver operating characteristic curves: A nonparametric approach, Biometrics, 44, pp. 837-845, (1988); Zou K.H., O'Malley A.J., Mauri L., Receiver-operating characteristic analysis for evaluating diagnostic tests and predictive models, Circulation, 115, pp. 654-657, (2007); Mann D.L., Dehghansai N., Baker J., Searching for the elusive gift: Advances in talent identification in sport, Curr. Opin. Psychol, 16, pp. 128-133, (2017); Hazra A., Gogtay N., Biostatistics Series Module 7: The Statistics of Diagnostic Tests, Indian J. Dermatol, 62, pp. 18-24, (2017); Bergkamp T.L.G., Frencken W.G.P., Niessen A.S.M., Meijer R.R., den Hartigh R.J.R., How soccer scouts identify talented players, Eur. J. Sport Sci, 22, pp. 994-1004, (2022); Cumming S.P., Brown D.J., Mitchell S., Bunce J., Hunt D., Hedges C., Crane G., Gross A., Scott S., Franklin E., Et al., Premier League academy soccer players’ experiences of competing in a tournament bio-banded for biological maturation, J. Sports Sci, 36, pp. 757-765, (2018); Egorova E.S., Borisova A.V., Mustafina L.J., Arkhipova A.A., Gabbasov R.T., Druzhevskaya A.M., Astratenkova I.V., Ahmetov I.I., The polygenic profile of Russian football players, J. Sports Sci, 32, pp. 1286-1293, (2014); McEvoy B.P., Visscher P.M., Genetics of human height, Econ. Hum. Biol, 7, pp. 294-306, (2009); Ackerman P.L., Beier M.E., 13 Methods for Studying the Structure of Expertise: Psychometric Approaches, The Cambridge Handbook of Expertise and Expert Performance, (2018)","Z. Papadakis; Human Performance Laboratory, Department of Health Promotion and Clinical Practice, College of Health and Wellness, Barry University, Miami Shores, 33161, United States; email: zpapadakis@barry.edu","","MDPI","16617827","","","36293658","English","Int. J. Environ. Res. Public Health","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85140782669" "Armstrong Charles W.; Kwiatkowski Bruce; Levendusky Timothy A.; Kugler Leon","Armstrong, Charles W. (7202654010); Kwiatkowski, Bruce (36807429600); Levendusky, Timothy A. (6602414054); Kugler, Leon (6507091645)","7202654010; 36807429600; 6602414054; 6507091645","Impact characteristics of soccer balls varying in size and design","1989","Journal of Biomechanics","22","10","","1042","","","0","10.1016/0021-9290(89)90336-9","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0024915763&doi=10.1016%2f0021-9290%2889%2990336-9&partnerID=40&md5=011d1df256059acd730e51c19d023f2e","Univ of Toledo, , OH, United States","Armstrong Charles W., Univ of Toledo, , OH, United States; Kwiatkowski Bruce, Univ of Toledo, , OH, United States; Levendusky Timothy A., Univ of Toledo, , OH, United States; Kugler Leon, Univ of Toledo, , OH, United States","Fifty-eight soccer balls, varying in size (size 5, 4, 3) and design (outdoor, indoor, lightweight) were examined to determine the influence of these factors on specific characteristics of impact. Each was dropped repeatedly from a height of 18 meters onto a force platform. Impact data were sampled at 6 KHz and processed to provide measures of peak force, rise time, impact duration, and total impulse. A one-way ANOVA revealed that ball size and design significantly influenced selected impact characteristics. Of specific note, both peak force and total impulse increased as ball size increased. Rise time (adjusted for differences in peak force) was longest in the indoor balls and shortest in the #3 and lightweight balls. These results provide a basis for differentiating the effects of size and design on soccer ball impact, and may provide some insight into the mechanism of head injury in soccer.","","Materials Testing - Impact; Occupational diseases; Sporting Goods - Testing; Head Injury; Soccer Balls; Biomechanics","","","","","00219290","","JBMCB","","English","J Biomech","Article","Final","","Scopus","2-s2.0-0024915763" "Mino T.; Matsumoto K.; Jwa S.","Mino, T. (57206310532); Matsumoto, K. (7601610615); Jwa, S. (6506587659)","57206310532; 7601610615; 6506587659","A new method of measurement on the shock absorbability after the vertical jump","1984","Journal of the Wakayama Medical Society","35","2","","263","271","8","0","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-0021611325&partnerID=40&md5=e85ba92d50d977b1f4cce56dc039dadf","Japan","Mino T., Japan; Matsumoto K., Japan; Jwa S., Japan","A method of measurement was devised to examine the shock absorbability in case of involuntary landing after the vertical jump of touching by both hands a soccer-ball suspended from the ceiling over the head. The use of this method made it possible to measure the shock absorbability for 60 boy and 58 girl junior high school students. The results of measurement were as follows: (1) The students who showed better shock absorbability were those who took squat motion quickly and smoothly upon the heels after the landing (foot contacted in force plate). The action was made possible if the ankle joints were extended through range of motion of ankle plantar flexion preceding the landing (toes contact). (2) It was reproducible in each individual that the maximum vertical component was measured by the force plate. As the coefficient of variation from the maximum vertical component was higher than that from the ability of the vertical jump, it was suggested that there was some remarkable individual difference in the shock absorbability after the landing. (3) The maximum vertical component, which was correlated not highly with physical measurements, physical fitness and motor ability, was found to be an independent component of any items in principal component analysis. (4) A chart was worked out to evaluate the shock absorbability based on both the distance of vertical jump and the maximum vertical component per body weight. The said evaluation shows that about three quarters of the injured students while in school were dotted with low scores in the evaluation-square. Consequently, it was recognized that those who were inferior to others in the shock absorbability were apt to get injured.","","athlete; biomechanics; human; jumping; methodology; musculoskeletal system; normal human; sport","","","","","00430013","","WKMIA","","Japanese","J. WAKAYAMA MED. SOC.","Article","Final","","Scopus","2-s2.0-0021611325" "Sayre H.D.; Bowman T.G.","Sayre, Hallie D. (58481493300); Bowman, Tom G. (16444284500)","58481493300; 16444284500","Concussive Biomechanics in a Women’s Soccer Player: A Validation Clinical Case Report","2023","International Journal of Athletic Therapy and Training","28","4","","184","187","3","0","10.1123/ijatt.2021-0073","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85164448419&doi=10.1123%2fijatt.2021-0073&partnerID=40&md5=419bda0f09d4b43850b9a7debf2690ca","Pitt County Schools, Greenville, NC, United States; University of Lynchburg, Lynchburg, VA, United States","Sayre H.D., Pitt County Schools, Greenville, NC, United States; Bowman T.G., University of Lynchburg, Lynchburg, VA, United States","A concussed 19-year-old female midfielder on an National Collegiate Athletic Association (NCAA) Division III soccer team reported to the athletic training clinic complaining of a headache that began 4 days previously during a game where she headed several long punts. Despite delayed reporting, the patient returned to full participation without complication 13 days after her injury. The biomechanical data for the impacts she received on the day of injury were much lower than those presented in the literature as causing concussion for male athletes. Therefore, impact magnitude should not be used as an indicator for injury, as smaller, seemingly insignificant impacts can cause concussion. © 2023 Human Kinetics, Inc.","biomechanics; concussion; gender; head impact","","McCrea M, Hammeke T, Olsen G, Leo P, Guskiewicz K., Unreported concussion in high school football players, Clin J Sport Med, 14, 1, pp. 13-17, (2004); Broglio SP, Cantu RC, Guskiewicz KM, Kutcher J, Palm M, McLeod TC., National athletic trainers’ association position statement: management of sport concussion, J Athl Train, 49, 2, pp. 245-265, (2014); Practice parameter: the management of concussion in sports (summary statement). Report of the Quality Standards Subcommittee, Neurology, 48, 3, pp. 581-585, (1997); Guskiewicz KM, Mihalik JP., Biomechanics of sports concussion: quest for the elusive injury threshold, Exerc Sport Sci Rev, 39, 1, pp. 4-11, (2011); Zhang L, Yang KH, King AI., A proposed injury threshold for mild traumatic brain injury, J Biomech Eng, 126, 2, pp. 226-236, (2004); Mihalik JP, Lynall RC, Wasserman EB, Guskiewicz KM, Marshall SW., Evaluating the “threshold theory”: can head impact indicators help?, Med Sci Sports Exerc, 49, 2, pp. 247-253, (2017); Sayre HD, Bradney DB, Breedlove KM, Bowman TG., Concussive head impact biomechanics in women’s soccer and lacrosse athletes: a case series, Athl Train Sports Health Care, 11, 3, pp. 143-146, (2019); Cortes N, Lincoln AE, Myer GD, Et al., Video analysis verification of head impact events measured by wearable sensors, Am J Sports Med, 45, 10, pp. 2379-2387, (2017); Brainard LL, Beckwish JG, Chu JJ, Et al., Gender differences in head impacts sustained by collegiate ice hockey players, Med Sci Sports Exerc, 44, 2, pp. 297-304, (2011); Wilcox BJ, Beckwith JG, Greenwald RM, Et al., Biomechanics of head impacts associated with diagnosed concussion in female collegiate ice hockey players, J Biomech, 48, 10, pp. 2201-2204, (2015); Asken BM, McCrea MA, Clugston JR, Snyder AR, Houck ZM, Bauer RM., “Playing through it”: delayed reporting and removal from athletic activity after concussion predicts prolonged recovery, J Athl Train, 51, 4, pp. 329-335, (2016); Asken BM, Bauer RM, Guskiewicz KM, Et al., Immediate removal from activity after sport-related associated with shorter clinical recover and less severe symptoms in collegiate student-athletes, Am J Sports Med, 46, 6, pp. 1465-1474, (2018); Chrisman SP, Quitiquit C, Rivara FP., Qualitative study of barriers to concussive symptom reporting in high school athletics, J Adolesc Health, 52, 3, pp. 330-335, (2013); Bowman TG, Singe SM, Lacy AMP, Register-Mihalik JK., Chal-lenges faced by collegiate athletic trainers, part II: treating concussed student-athletes, J Athl Train, 55, 3, pp. 312-318, (2020); Kneavel ME, Ernest W, McCarthy KS., Randomized controlled trial of a novel peer concussion-education program for collegiate ath-letes, J Athl Train, 55, 5, pp. 456-468, (2020); Lininger MR, Wayment HA, Craig DI, Huffman AH., Improving Concussion-reporting behavior in national collegiate athletic association division I football players: evidence for the applicability of the socioecological model for athletic trainers, J Athl Train, 54, 1, pp. 21-29, (2019); Wallace J, Covassin T, Nogle S, Gould D, Kovan J., Knowledge of concussion and reporting behaviors in high school athletes with or without access to an athletic trainer, J Athl Train, 52, 3, pp. 228-235, (2017); McGuine TA, Pfaller AY, Post EG, Hetzel SJ, Brooks A, Broglio SP., The influence of athletic trainers on the incidence and management of concussions in high school athletes, J Athl Train, 53, 11, pp. 1017-1024, (2018); Tiernan S, Byrne G, O'Sullivan DM., Evaluation of skin-mounted sensor for head impact measurement, Proc Inst Mech Eng H, 233, 7, pp. 735-744, (2019); Wu LC, Nangia V, Bui K, Et al., In vivo evaluation of wearable head impact sensors, Ann Biomed Eng, 44, 4, pp. 1234-1245, (2016); Cummiskey B, Schiffmiller D, Talavage TM, Et al., Reliability and accuracy of helmet-mounted and head-mounted devices used to measure head accelerations, Proc Inst Mech Eng P, 231, 2, pp. 144-153, (2017)","H.D. Sayre; Pitt County Schools, Greenville, United States; email: halliesayre@gmail.com","","Human Kinetics Publishers Inc.","21577277","","","","English","Inter. J","Article","Final","","Scopus","2-s2.0-85164448419" "Attaallah M.; Bassiouni S.; Hassan A.M.R.; Sunderland C.; Soliman W.; Amin M.; Tschan H.","Attaallah, Mansour (59021089800); Bassiouni, Sami (57428815900); Hassan, A.M.R. (56499849000); Sunderland, Caroline (13606498500); Soliman, Walid (57428994200); Amin, Maha (57429881400); Tschan, Harald (6603475852)","59021089800; 57428815900; 56499849000; 13606498500; 57428994200; 57429881400; 6603475852","The penalty kick accuracy in soccer: A new biomechanical approach","2021","Journal of Human Sport and Exercise","16","Proc4","","S1552","S1562","10","0","10.14198/jhse.2021.16.Proc4.01","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123602582&doi=10.14198%2fjhse.2021.16.Proc4.01&partnerID=40&md5=128abe0b1c4b62560cc1c97874a5593b","Faculty of Physical Education for Men, Alexandria University, Alexandria, Egypt; Department of Sports Training and Movement Sciences, Faculty of Physical Education for Girls, Alexandria University, Egypt; Department of Sports Training, Faculty of Sports Education, Mansoura University, Mansoura, Egypt; Department of Sport Science, Sport, Health and Performance Enhancement Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom; Centre for Sport Science and University Sports, University of Vienna, Vienna, Austria","Attaallah M., Faculty of Physical Education for Men, Alexandria University, Alexandria, Egypt; Bassiouni S., Department of Sports Training and Movement Sciences, Faculty of Physical Education for Girls, Alexandria University, Egypt; Hassan A.M.R., Department of Sports Training, Faculty of Sports Education, Mansoura University, Mansoura, Egypt; Sunderland C., Department of Sport Science, Sport, Health and Performance Enhancement Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom; Soliman W., Faculty of Physical Education for Men, Alexandria University, Alexandria, Egypt; Amin M., Department of Sports Training and Movement Sciences, Faculty of Physical Education for Girls, Alexandria University, Egypt; Tschan H., Centre for Sport Science and University Sports, University of Vienna, Vienna, Austria","The purpose of this study was to present a practical novel method to calculate the penalty kick accuracy in football. The mathematical advantage considered the ratio of the rectangle goal dimension (1:3) and equalized between horizontal axis as it longer 3 times than the vertical axis. Twelve male soccer players 16 (3) years)), height 174.7 (4.5) cm)), body mass 67.6 (5.5) kg)) volunteered to participate in this study. The players were asked to do penalty kicks where the ball is aimed at the farthest point from the centre of the target portion for shooting. The soccer goal was split into quarters at three different velocities (low, medium, and high) the calculation was conducted two times by height to width ratio (HWR) and the most common method radial error. Kinovea Software 0.8.27. were used for digitizing. The ICC demonstrated high reliability (r = .99) for digitization at the moment the ball crossed the goal line for the inter and intra-ratter reliability. There was a significant relationship between some kinematics variables of the ball and the accuracy outcome of the HWR method in the four sections of the goal (p < .05). © Faculty of Education. University of Alicante.","Height to width ratio (hwr); Kicking accuracy; Perspective grid; Var","","Alcock A., Gilleard W., Brown N. A. T., Baker J., Hunter A., Initial ball flight characteristics of curve and instep kicks in elite women's football, J. Appl. Biomech. Journal of Applied Biomechanics, 28, 1, pp. 70-77, (2012); Ali A., Williams C., Hulse M., Strudwick A., Reddin J., Howarth L., McGregor S., Reliability and validity of two tests of soccer skill, Journal of sports sciences, 25, 13, pp. 1461-1470, (2007); Bacvarevic B. B., Pazin N., Bozic P. R., Mirkov D., Kukolj M., Jaric S., Evaluation of a Composite Test of Kicking Performance, Journal of Strength and Conditioning Research Journal of Strength and Conditioning Research, 26, 7, pp. 1945-1952, (2012); Bland J. M., Altman D. G., Measuring agreement in method comparison studies, Statistical Methods in Medical Research, 8, 2, (1999); Bland J. M., Altman D. G., Applying the right statistics: analyses of measurement studies Measurement studies, Ultrasound Obstet Gynecol Ultrasound in Obstetrics and Gynecology, 22, 1, pp. 85-93, (2003); Charmant J., Kinovea (Version 0.8.27) [Computer software], (2018); Chhapola V., Kanwal S. K., Brar R., Reporting standards for Bland-Altman agreement analysis in laboratory research: a cross-sectional survey of current practice, Ann Clin Biochem, 52, pp. 382-386, (2015); Ferraz R. M. P., van den Tillaar R., Pereira A., Marques M. C., The effect of fatigue and duration knowledge of exercise on kicking performance in soccer players, JSHS Journal of Sport and Health Science, (2017); Finnoff J. T., Newcomer K., Laskowski E. R., A valid and reliable method for measuring the kicking accuracy of soccer players, Journal of Science and Medicine in Sport Journal of Science and Medicine in Sport, 5, 4, pp. 348-353, (2002); Giavarina D., Understanding Bland Altman analysis, Biochemia medica, 25, 2, pp. 141-151, (2015); Hancock G. R., Butler M. S., Fischman M. G., On the Problem of Two-Dimensional Error Scores: Measures and Analyses of Accuracy, Bias, and Consistency, Journal of Motor Behavior Journal of Motor Behavior, 27, 3, pp. 241-250, (1995); Kottner J., Audige L., Brorson S., Donner A., Gajewski B. J., Hrobjartsson A., Streiner D. L., Guidelines for Reporting Reliability and Agreement Studies (GRRAS) were proposed, NS International Journal of Nursing Studies, 48, 6, pp. 661-671, (2011); Lees A., Nolan L., The biomechanics of soccer: a review, Journal of sports sciences, 16, 3, pp. 211-234, (1998); Markovic G., Dizdar D., Jaric S., Evaluation of tests of maximum kicking performance, The Journal of sports medicine and physical fitness, 46, 2, pp. 215-220, (2006); McLean B., Tumilty D. J. B. J. o. S. M., Left-right asymmetry in two types of soccer kick, 27, 4, pp. 260-262, (1993); Mirkov D., Nedeljkovic A., Kukolj M., Ugarkovic D., Jaric S., Evaluation of the reliability of soccer-specific field tests, J Strength Cond Res, 22, 4, pp. 1046-1050, (2008); Nagasawa Y., Demura S., Demura T., Matsuda S., Uchida Y., Effect of differences in kicking legs, kick directions, and kick skill on kicking accuracy in soccer players, J. Quant. Anal. Sports Journal of Quantitative Analysis in Sports, 7, 4, (2011); Puig-Divi A., Padulles-Riu J. M., Busquets-Faciaben A., Padulles-Chando X., Escalona-Marfil C., Marcos-Ruiz D., Validity and Reliability of the Kinovea Program in Obtaining Angular and Distance Dimensions, (2017); Radman I., Wessner B., Bachl N., Ruzic L., Hackl M., Baca A., Markovic G., Reliability and discriminative ability of a new method for soccer kicking evaluation, (2016); Scurr J., Hall B., The effects of approach angle on penalty kicking accuracy and kick kinematics with recreational soccer players, Journal of sports science & medicine, 8, 2, pp. 230-234, (2009); Sterzing T., Lange J. S., Wachtler T., Muller C., Milani T. L., Velocity and Accuracy as Performance Criteria for Three Different Soccer Kicking Techniques, the International Conference on Biomechanics in Sports, (2009); Ugur F., Mehmet Y., Reliability and Validity of the New Shooting Accuracy Measurement (SAM) System Software, JSS Journal of Sports Science, 5, 3, (2017); van den Tillaar R., Ulvik A., Influence of Instruction on Velocity and Accuracy in Soccer Kicking of Experienced Soccer Players, Journal of motor behavior, 46, 5, pp. 287-291, (2014); Vieira L. H. P., Cunha S. A., Moraes R., Barbieri F. A., Aquino R., Oliveira L. d. P., Santiago P. R. P., Kicking Performance in Young U9 to U20 Soccer Players: Assessment of Velocity and Accuracy Simultaneously, Research Quarterly for Exercise and Sport, 89, 2, pp. 210-220, (2018)","A.M.R. Hassan; Department of Sports Training, Faculty of Sports Education, Mansoura University, Mansoura, Egypt; email: amrahh@mans.edu.eg","","Universidad de Alicante","19885202","","","","English","J. Hum. Sport Exerc.","Article","Final","All Open Access; Hybrid Gold Open Access","Scopus","2-s2.0-85123602582" "Jain N.; Murray D.; Kemp S.; Calder J.","Jain, Neil (56152231800); Murray, David (57196912600); Kemp, Steve (56222102500); Calder, James (57219236573)","56152231800; 57196912600; 56222102500; 57219236573","Republication of “High-Speed Video Analysis of Syndesmosis Injuries in Soccer—Can It Predict Injury Mechanism and Return to Play? A Pilot Study”","2023","Foot and Ankle Orthopaedics","8","3","","","","","0","10.1177/24730114231195048","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85167841520&doi=10.1177%2f24730114231195048&partnerID=40&md5=f7f9601c2618612987bdd288a9ceda8c","Manchester Institute of Health & Performance, Manchester, United Kingdom; The Football Association, Burton-upon-Trent, United Kingdom; Department of Bioengineering, Imperial College, Fortius Clinic, London, United Kingdom","Jain N., Manchester Institute of Health & Performance, Manchester, United Kingdom; Murray D., Manchester Institute of Health & Performance, Manchester, United Kingdom; Kemp S., The Football Association, Burton-upon-Trent, United Kingdom; Calder J., Department of Bioengineering, Imperial College, Fortius Clinic, London, United Kingdom","Background: Ankle syndesmosis injuries in professional soccer may lead to an unpredictable and prolonged recovery. This injury has been investigated in anatomical and radiologic studies but the precise mechanism leading to syndesmosis injury is not well understood and remains debated. The 2 goals of this study were to (1) evaluate the relationship between the mechanism of syndesmosis injury as determined by high-speed video analysis and the injured structures identified by clinical and radiologic examination and to (2) investigate the relationship between mechanism of injury and time of return to play. Methods: This pilot study prospectively reviewed high-speed video analysis of 12 professional soccer players who sustained syndesmosis injuries. The mechanism of injury was compared with the clinical and MRI evaluation and the time taken to return to play. Results: Higher-grade syndesmosis injuries occurred during ankle external rotation with dorsiflexion. Supination-inversion injuries with a standard lateral ankle sprain (rupture of the anterior talofibular ligament) may extend proximally, causing a lower-grade syndesmosis injury. These may present with signs of a high ankle sprain but have a quicker return to sport than those following a dorsiflexion-external rotation injury (mean 26 days vs 91 days). Conclusions: Video analysis confirmed that at least 2 mechanisms may result in injury to the ankle syndesmosis. Those “simple” ankle sprains with signs of syndesmosis injury had a quicker return to play. This new finding may be used by club medical teams during their initial assessment and help predict the expected time away from soccer in players with suspected high ankle sprains. Level of Evidence: Level IV, retrospective cohort study. © The Author(s) 2023.","Ankle injury; biomechanics; soccer injuries; syndesmosis injury; video analysis","adult; ankle arthroscopy; ankle injury; ankle radiography; ankle sprain; ankle surgery; Article; clinical article; controlled study; high speed video analysis; human; injury severity; nuclear magnetic resonance imaging; occupational exposure; occupational safety; pilot study; predictive value; prospective study; return to sport; soccer player; sport injury; suture technique; video surveillance; videorecording; young adult","Beumer A., van Hemert W.L., Niesing R., Radiographic measurement of the distal tibiofibular syndesmosis has limited use, Clin Orthop Relat Res, 423, pp. 227-234, (2004); Boytim M.J., Fischer D.A., Neumann L., Syndesmotic ankle sprains, Am J Sports Med, 19, 3, pp. 294-298, (1991); Brown K.W., Morrison W.E., Schwetzer M.E., Parellada A., Nothnagel H., MRI findings associated with distal tibiofibular syndesmosis injuries, AJR Am J Roentgenol, 182, 1, pp. 131-136, (2004); Calder J.D., Bamford R., Petrie A., McCollum G., Stable versus unstable grade II high ankle sprains: a prospective study predicting the need for surgical stabilization and time to return to sports, Arthroscopy, 32, 4, pp. 634-642, (2016); Dattani R., Patnaik S., Kantak A., Srikanth B., Selvan T.P., Injuries to the tibiofibular syndesmosis, J Bone Joint Surg Br, 90, 4, pp. 405-410, (2008); Edwards G.S., DeLee J.C., Ankle diastasis without fracture, Foot Ankle, 4, 6, pp. 305-312, (1984); Fong D.T., Hong Y., Chan L.K., Yung P.S., Chan K.M., A systematic review on ankle injury and ankle sprain in sports, Sports Med, 37, 1, pp. 73-94, (2007); Fritschy D., An unusual ankle injury in top skiers, Am J Sports Med, 17, 2, pp. 282-286, (1989); Gerber J.P., Williams G.N., Scoville C.R., Arciero R.A., Taylor D.C., Persistent disability associated with ankle sprains: A prospective examination of an athletic population, Foot Ankle, 19, 10, pp. 653-660, (1998); Golano P., Vega J., de Leeuw P.A., Et al., Anatomy of the ankle ligaments: a pictorial essay, Knee Surg Sports Traumatol Arthrosc, 24, 4, pp. 944-956, (2016); Hawkins R.D., Fuller C.W., A prospective epidemiological study of injuries in four English professional football clubs, Br J Sports Med, 33, 3, pp. 196-203, (1999); Hermans J.J., Beumer A., de Jong T.A., Kleinrensink G.J., Anatomy of the distal tibiofibular syndesmosis in adults: a pictorial essay with a multimodality approach, J Anat, 217, 6, pp. 633-645, (2010); Hopkinson W.J., St Pierre P., Ryan J.B., Wheeler J.H., Syndesmosis sprains of the ankle, Foot Ankle, 10, 6, pp. 325-330, (1990); Jones M.H., Amendola A., Syndesmosis sprains of the ankle: a systematic review, Clin Orthop Relat Res, 455, pp. 173-175, (2007); Kannus P., Renstrom P., Treatment for acute tears of the lateral ligaments of the ankle: operation, cast, or early controlled mobilization, J Bone Joint Surg Am, 73, 2, pp. 305-312, (1991); MacAuley D., Ankle injuries: same joint, different sports, Med Sci Sports Exerc, 31, 7 suppl, pp. S409-S411, (1993); McCollum G.A., van den Bekerom M.P., Kerkhoffs G.M., Calder J.D., van Dijk C.N., Syndesmosis and deltoid ligament injuries in the athlete, Knee Surg Sports Traumatol Arthrosc, 21, 6, pp. 1328-1337, (2013); Milz P., Milz S., Steinborn M., Mittlmeier T., Putz R., Reiser M., Lateral ankle ligaments and tibiofibular syndesmosis. 13-MHz high-frequency sonography and MRI compared in 20 patients, Acta Orthop Scand, 69, 1, pp. 51-55, (1998); Rammelt S., Zwipp H., Grass R., Injuries to the distal tibio-fibular syndesmosis: an evidence-based approach to acute and chronic lesions, Foot Ankle Clin, 13, pp. 611-633, (2008); Uys H.D., Rijke A.M., Clinical association of acute lateral ankle sprain with syndesmotic involvement: a stress radiography and magnetic resonance imaging study, Am J Sports Med, 30, 6, pp. 816-822, (2002); van Dijk C.N., Mol B.W., Lim L.S., Marti R.K., Bossuyt P.M., Diagnosis of ligament rupture of the ankle joint. Physical examination, arthrography, stress radiography and sonography compared in 160 patients after inversion trauma, Acta Orthop Scand, 67, 6, pp. 566-570, (1996); Woods C., Hawkins R., Hulse M., Hodson A., The Football Association Medical Research Programme: an audit of injuries in professional football: an analysis of ankle sprains, Br J Sports Med, 37, 3, pp. 233-238, (2003); Wright R.W., Barlie J., Surprenant D.A., Matava M.J., Ankle syndesmosis sprains in national hockey league players, Am J Sports Med, 32, 8, pp. 1941-1945, (2004); Xenos J.S., Hopkinson W.J., Mulligan M.E., Olson E.J., Popovic N.A., The tibiofibular syndesmosis: evaluation of the ligamentous structures, methods of fixation, and radiographic assessment, J Bone Joint Surg Am, 77, 6, pp. 847-856, (1995)","","","SAGE Publications Inc.","24730114","","","","English","Foot. Ankle. Orthop.","Article","Final","All Open Access; Gold Open Access; Green Open Access","Scopus","2-s2.0-85167841520" "Hasan U.C.; Clemente F.M.","Hasan, Uday Ch (57213354123); Clemente, Filipe Manuel (57209913336)","57213354123; 57209913336","Cluster analysis of selected biomechanical variables related to backwards running in soccer","2021","Trends in Sport Sciences","28","1","","29","35","6","0","10.23829/TSS.2021.28.1-4","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85103583177&doi=10.23829%2fTSS.2021.28.1-4&partnerID=40&md5=a395d8d6f5f00cf0f6c64665e0b5c045","Al-Kitab University, Department of Physical Education and Sports Sciences, Kirkuk, Iraq; Escola Superior Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal; Instituto de Telecomunicações, Delegação da Covilhã, Lisboa, Portugal","Hasan U.C., Al-Kitab University, Department of Physical Education and Sports Sciences, Kirkuk, Iraq; Clemente F.M., Escola Superior Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal, Instituto de Telecomunicações, Delegação da Covilhã, Lisboa, Portugal","Introduction. Running, of which backwards running (BR) is one type, is a basic skill that has to be maintained at a high level by athletes. Aim of Study. Use cluster analysis to evaluate some kinematic variables for BR. This analysis is applied to classify players and identify differences in their classification to determine relevant dynamic solutions to raise players’ performance levels. Material and Methods. Twelve volunteer university soccer players (age: 20.8 ± 0.83 years old; experience: 4.7 ± 0.78 years; height: 175.6 ± 6.01 cm; body mass: 68.63 ± ± 5.06 kg) participated in the present study. The participants tried two 10-m BR, in which the best attempt based on the shortest time was analysed. Results. The study showed that cluster analysis may be used to classify and divide participants into two groups via evaluations of selected biomechanical variables. The first group, which consisted of 7 participants, represents the indistinctive performance level, while the second group, which consisted of 5 participants, represents the distinctive performance level. Statistically significant differences were found between the classifications of the participants. The second group excelled regarding certain biomechanical variables, including average stride length, average speed, angular velocity of the arms, peripheral velocity of the arms, angular velocity of the legs, peripheral velocity of the legs, instantaneous force and time of achievement. Conclusions. This classification ensures the correct selection and full consideration of practical training to achieve the ideal biomechanical characteristics for BR in soccer. © 2021, University School of Physical Education. All rights reserved.","Backwards running; Biomechanics; Football; Motion analysis; Performance","","Ademovic A., Differences in the quantity and intensity of playing in elite soccer players of different position in the game, Homo Sport, 18, 1, pp. 26-31, (2016); Arabi SM, Rahimi S., Typology as a theory building tool in management, Rev Gestão Tecnol, 20, pp. 203-222, (2020); Arata AW., Kinematic comparison of high speed backward and forward running, Air Force Acad, (2000); Babic V, Coh M, Dizdar D., Differences in kinematic parameters of athletes of different running quality, Biol Sport, 28, 2, pp. 115-121, (2011); Barnes KR, Mcguigan MR, Kilding AE., Lower-body determinants of running economy in male and female distance runners, J Strength Cond Res, 28, 5, pp. 1289-1297, (2014); Batterham AM, Hopkins WG., Making meaningful inferences about magnitudes, Int J Sports Physiol Perform, 1, 1, pp. 50-57, (2006); Borysiuk Z, Waskiewicz Z, Piechota K, Pakosz P, Konieczny M, Blaszczyszyn M, Et al., Coordination aspects of an effective sprint start, Front Physiol, (2018); Buchheit M, Mendez-Villanueva A, Simpson BM, Bourdon PC., Match running performance and fitness in youth soccer, Int J Sports Med, 31, 11, (2010); Cavagna GA, Willems PA, Franzetti P, Detrembleur C., The two power limits conditioning step frequency in human running, J Physiol, 437, 1, pp. 95-108, (1991); Cohen J., Statistical power analysis for the behavioral sciences, (2013); Corluka M, Bjelica D, Vasiljevic I, Bubanja M, Georgiev G, Zeljko I., Differences in the morphological characteristics and body composition of football players of HSC Zrinjski Mostar and FC Siroki Brijeg in Bosnia and Herzegovina, Sport Mont, 16, 2, pp. 77-81, (2018); Cunha L., The relation between different phases of sprint run and specific strength parameters of lower limbs, ISBS-Conference Proceedings Archive, pp. 183-185, (2005); Debaere S, Jonkers I, Delecluse C., The Contribution of step characteristics to sprint running performance in high-level male and female athletes, J Strength Cond Res, 27, 1, pp. 116-124, (2013); 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Hasan U., Biomechanics evaluation at football school, (2010); Hunter JP, Marshall RN, McNair PJ., Relationships between ground reaction force impulse and kinematics of sprint-running acceleration, J Appl Biomech, 21, 1, pp. 31-43, (2005); Kubayi A., Evaluation of match-running distances covered by soccer players during the UEFA EURO 2016, South African J Sport Med, 31, 1, pp. 1-4, (2019); Lupo C, Ungureanu AN, Varalda M, Brustio PR., Running technique is more effective than soccer-specific training for improving the sprint and agility performances with ball possession of prepubescent soccer players, Biol Sport, 36, 3, pp. 249-255, (2019); Macadam P, Cronin JB, Uthoff AM, Johnston M, Knicker AJ., Role of arm mechanics during sprint running, Strength Cond J, 40, 5, pp. 14-23, (2018); Mackala K, Fostiak M, Kowalski K., Selected determinants of acceleration in the 100 m sprint, J Hum Kinet, 45, 1, pp. 135-148, (2015); Misjuk M, Viru M., Running velocity dynamics in 100 m sprint: comparative analysis of the world top and Estonian top male sprinters, Acta Kinesiol Univ Tartu, 17, (2012); Murata M, Takai Y, Kanehisa H, Fukunaga T, Nagahara R., Spatiotemporal and kinetic determinants of sprint acceleration performance in soccer players, Sports, 6, 4, (2018); Murphy A, Lockie R, Coutts A., Kinematic determinants of early acceleration in field sport athletes, J Sport Sci Med, 2, 4, pp. 144-150, (2003); Nagahara R, Takai Y, Kanehisa H, Fukunaga T., Vertical impulse as a determinant of combination of step length and frequency during sprinting, Int J Sports Med, 39, pp. 282-290, (2018); Olsen O-E, Myklebust G, Engebretsen L, Holme I, Bahr R., Exercises to prevent lower limb injuries in youth sports: cluster randomised controlled trial, BMJ, 330, 7489, (2005); Pontzer H, Holloway JH, Raichlen DA, Lieberman DE., Control and function of arm swing in human walking and running, J Exp Biol, 212, 4, pp. 523-534, (2009); Rebelo A, Brito J, Seabra A, Oliveira J, Krustrup P., Physical match performance of youth football players in relation to physical capacity, Eur J Sport Sci, 14, pp. S148-S156, (2014); Ryan S, Coutts AJ, Hocking J, Kempton T., Factors affecting match running performance in professional Australian football, Int J Sports Physiol Perform, 12, 9, pp. 1199-1204, (2017); Slawinski J, Bonnefoy A, Ontanon G, Leveque JM, Miller C, Riquet A, Et al., Segment-interaction in sprint start: analysis of 3D angular velocity and kinetic energy in elite sprinters, J Biomech, 43, 8, (2010); Soligard T, Myklebust G, Steffen K, Holme I, Silvers H, Bizzini M, Et al., Comprehensive warm-up programme to prevent injuries in young female footballers: cluster randomised controlled trial, BMJ, 337, (2008); Uthoff A, Oliver J, Cronin J, Harrison C, Winwood P., A new direction to athletic performance: understanding the acute and longitudinal responses to backward running, Sport Med, 48, 5, pp. 1083-1096, (2018); Uthoff A, Oliver J, Cronin J, Harrison C, Winwood P., Sprint-specific training in youth: backward running vs. forward running training on speed and power measures in adolescent male athletes, J Strength Cond Res, 34, 4, pp. 1113-1122, (2020); Weyand PG, Sandell RF, Prime DNL, Bundle MW., The biological limits to running speed are imposed from the ground up, J Appl Physiol, 108, 4, (2010); Wild JJ, Bezodis IN, North JS, Bezodis NE., Differences in step characteristics and linear kinematics between rugby players and sprinters during initial sprint acceleration, Eur J Sport Sci, 18, 10, (2018)","U.C. Hasan; Al-Kitab University, Department of Physical Education and Sports Sciences, Kirkuk, Iraq; email: dr_udayhasan@yahoo.com","","University School of Physical Education","22999590","","","","English","Trends Sport Sci.","Article","Final","","Scopus","2-s2.0-85103583177" "Yaserifar M.; Fallah Mohammadi Z.; Hosseininejad S.E.; Paeen Afrakoti I.E.; Meijer K.; Boonstra T.W.","Yaserifar, Morteza (57222068411); Fallah Mohammadi, Ziya (57216792275); Hosseininejad, Sayed E. (57222063209); Paeen Afrakoti, Iman E. (57222057382); Meijer, Kenneth (55345573800); Boonstra, Tjeerd W. (8975028000)","57222068411; 57216792275; 57222063209; 57222057382; 55345573800; 8975028000","Coordination variability reduced for soccer players compared to non-athletes during the stance phase of gait","2023","Journal of Sports Medicine and Physical Fitness","63","5","","630","638","8","0","10.23736/S0022-4707.22.13964-2","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85162861220&doi=10.23736%2fS0022-4707.22.13964-2&partnerID=40&md5=40464ba1514946464284430663dac6ba","Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, University of Maastricht, Maastricht, Netherlands; Department of Exercise Physiology, Faculty of Physical Education and Sport Science, University of Mazandaran, Babolsar, Iran; Department of Sports Biomechanics, Faculty of Physical Education and Sport Science, University of Mazandaran, Babolsar, Iran; Department of Electrical Engineering, Faculty of Technology and Engineering, University of Mazandaran, Babolsar, Iran; Department of Nutrition and Movement Sciences, NUTRIM, School of Nutrition and Translational Research in Metabolism, Faculty of Health, Medicine and Life Sciences, University of Maastricht, Maastricht, Netherlands; School of Psychiatry, UNSW Medicine, Sydney, Australia","Yaserifar M., Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, University of Maastricht, Maastricht, Netherlands, Department of Exercise Physiology, Faculty of Physical Education and Sport Science, University of Mazandaran, Babolsar, Iran; Fallah Mohammadi Z., Department of Exercise Physiology, Faculty of Physical Education and Sport Science, University of Mazandaran, Babolsar, Iran; Hosseininejad S.E., Department of Sports Biomechanics, Faculty of Physical Education and Sport Science, University of Mazandaran, Babolsar, Iran; Paeen Afrakoti I.E., Department of Electrical Engineering, Faculty of Technology and Engineering, University of Mazandaran, Babolsar, Iran; Meijer K., Department of Nutrition and Movement Sciences, NUTRIM, School of Nutrition and Translational Research in Metabolism, Faculty of Health, Medicine and Life Sciences, University of Maastricht, Maastricht, Netherlands; Boonstra T.W., Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, University of Maastricht, Maastricht, Netherlands, School of Psychiatry, UNSW Medicine, Sydney, Australia","BACKGROUND: Soccer is a unilateral sports activity that may alter the spatiotemporal characteristics of gait. This may alter motor control of gait in the dominant leg in soccer players and lead to a sport-specific gait pattern, which has not yet been considered. We aimed to determine whether soccer players exhibit differences in the lower extremity coupling variability during gait compared to healthy non-athletes. METHODS: Hip, knee, and ankle joint angles from fourteen soccer players and sixteen controls were acquired during treadmill walking. Hip-knee coupling, knee-ankle coupling and coupling angle variability (CAV) of the right leg in the sagittal plane were assessed using a vector coding technique. RESULTS: Soccer players showed reduced hip-knee CAV during the mid-stance and terminal-stance phases of gait compared to the control group (Padj =0.04 and Padj <0.001, respectively). In addition, soccer players less often used an ankle coordination pattern, in which only the ankle joint but not the knee joint rotates (Padj =0.01). CONCLUSIONS: In summary, soccer players show altered gait dynamics during normal walking, possibly due to intense soccer training. These changes provide evidence of adaptive strategies of the motor control system to sports activities that can be used for gait rehabilitation. Clinicians should note that some sport, such as soccer, may result in sport-specific gait patterns However, further works are needed to confirm this finding. © 2022 EDIZIONI MINERVA MEDICA Online version at https://www.minervamedica.it.","Biomechanical phenomena; Gait; Soccer","","DeLeo AT, Dierks TA, Ferber R, Davis IS., Lower extremity joint coupling during running: a current update, Clin Biomech (Bristol, Avon), 19, pp. 983-991, (2004); Leroy D, Polin D, Tourny-Chollet C, Weber J., Spatial and temporal gait variable differences between basketball, swimming and soccer players, Int J Sports Med, 21, pp. 158-162, (2000); Pascual-Leone A, Nguyet D, Cohen LG, Brasil-Neto JP, Cammarota A, Hallett M., Modulation of muscle responses evoked by transcranial magnetic stimulation during the acquisition of new fine motor skills, J Neurophysiol, 74, pp. 1037-1045, (1995); Adkins DL, Boychuk J, Remple MS, Kleim JA., Motor training induces experience-specific patterns of plasticity across motor cortex and spinal cord, J Appl Physiol, 101, pp. 1776-1782, (2006); 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Kim HK, Mirjalili SA, Zhang Y, Xiang L, Gu Y, Fernandez J., Effect of gender and running experience on lower limb biomechanics following 5 km barefoot running, Sports Biomech, pp. 1-14, (2021); Clermont CA, Benson LC, Osis ST, Kobsar D, Ferber R., Running patterns for male and female competitive and recreational runners based on accelerometer data, J Sports Sci, 37, pp. 204-211, (2019); Pollard CD, Stearns KM, Hayes AT, Heiderscheit BC., Altered lower extremity movement variability in female soccer players during side-step cutting after anterior cruciate ligament reconstruction, Am J Sports Med, 43, pp. 460-465, (2015); Hawrylak A, Brzezna A, Chromik K., Distribution of Plantar Pressure in Soccer Players, Int J Environ Res Public Health, 18, (2021)","M. Yaserifar; Department of Exercise Physiology, Faculty of Physical Education and Sport Science, University of Mazandaran, Babolsar, Pasdaran St., 47416, Iran; email: morteza7717@yahoo.com","","Edizioni Minerva Medica","00224707","","JMPFA","","English","J. Sports Med. Phys. Fitness","Article","Final","","Scopus","2-s2.0-85162861220" "De la Fuente C.; Silvestre R.; Botello J.; Neira A.; Soldan M.; Carpes F.P.","De la Fuente, Carlos (56289782900); Silvestre, Rony (51664173500); Botello, Julio (58805616700); Neira, Alejandro (56559892500); Soldan, Macarena (57716366500); Carpes, Felipe P. (16238221400)","56289782900; 51664173500; 58805616700; 56559892500; 57716366500; 16238221400","Unique case study: Impact of single-session neuromuscular biofeedback on motor unit properties following 12 days of Achilles tendon surgical repair","2024","Physiological Reports","12","1","e15868","","","","0","10.14814/phy2.15868","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85181922153&doi=10.14814%2fphy2.15868&partnerID=40&md5=9b7a510b35b7d823331547d0c3764e45","Exercise and Rehabilitation Sciences Institute, Postgraduate, Faculty of Rehabilitation Sciences, Universidad Andres Bello, Universidad Andres Bello, Santiago de Chile, Chile; Unidad de Biomecánica, Centro de Innovación, Clínica MEDS, Santiago, Chile; Foot and Ankle Surgery Department, Clinica MEDS, Santiago, Chile; Carrera de Kinesiología, Departamento de Ciencias de la Salud, Facultad de Medicina, Pontificia Universidad Catolica de Chile, Santiago, Chile; Escuela de Kinesiología, Facultad de Medicina y Ciencias de la Salud, Universidad Mayor, Santiago, Chile; Escuela de Kinesiologia, Universidad de los Andes, Santiago, Chile; Laboratory of Neuromechanics, Federal University of Pampa, RS, Uruguaiana, Brazil","De la Fuente C., Exercise and Rehabilitation Sciences Institute, Postgraduate, Faculty of Rehabilitation Sciences, Universidad Andres Bello, Universidad Andres Bello, Santiago de Chile, Chile; Silvestre R., Unidad de Biomecánica, Centro de Innovación, Clínica MEDS, Santiago, Chile, Foot and Ankle Surgery Department, Clinica MEDS, Santiago, Chile; Botello J., Carrera de Kinesiología, Departamento de Ciencias de la Salud, Facultad de Medicina, Pontificia Universidad Catolica de Chile, Santiago, Chile; Neira A., Escuela de Kinesiología, Facultad de Medicina y Ciencias de la Salud, Universidad Mayor, Santiago, Chile; Soldan M., Unidad de Biomecánica, Centro de Innovación, Clínica MEDS, Santiago, Chile, Escuela de Kinesiología, Facultad de Medicina y Ciencias de la Salud, Universidad Mayor, Santiago, Chile, Escuela de Kinesiologia, Universidad de los Andes, Santiago, Chile; Carpes F.P., Laboratory of Neuromechanics, Federal University of Pampa, RS, Uruguaiana, Brazil","We explored the first evidence of a single-session neuromuscular biofeedback effect on motor unit properties, neuromuscular activation, and the Achilles tendon (AT) length 12 days after undergoing AT surgical repair. We hypothesized that immediate neuromuscular biofeedback enhances motor unit properties and activation without causing AT lengthening. After 12 days AT surgical repair, Medial Gastrocnemius (MG) motor unit decomposition was performed on a 58-year-old male before and after a neuromuscular biofeedback intervention (surface electromyography (sEMG) and ultrasonography), involving unressited plantar flexion. The analysis included motor unit population properties, sEMG amplitude, force paradigm, and AT length. There were increased MG motor unit recruitment, peak and average firing rate, coefficient of variation, and sEMG amplitude, and decreased recruitment and derecruitment threshold in the repaired AT limb. The non-injured limb increased the motor unit recruitment, and decreased the coefficient of variation, peak and average firing rate, inter-pulse interval, derecruitment threshold and sEMG amplitude. The AT length experienced −0.4 and 0.3 cm changes in the repaired AT and non-injured limb, respectively. This single-session neuromuscular biofeedback 12 days after AT surgery shows evidence of enhanced motor unit properties and activation without signs of AT lengthening when unresisted plantar flexion is performed in the repaired AT limb. © 2024 The Authors. Physiological Reports published by Wiley Periodicals LLC on behalf of The Physiological Society and the American Physiological Society.","case-report; decomposition; neuromechanical adaptation; rehabilitation; surface electromyography","Achilles Tendon; Biofeedback, Psychology; Correlation of Data; Electromyography; Extremities; Humans; Male; Middle Aged; achilles tendon; adult; Article; biofeedback; biomechanics; body mass; case report; clinical article; echography; gastrocnemius muscle; human; knee function; male; middle aged; motoneuron; motor unit; muscle strength; nerve potential; neuromuscular function; range of motion; soccer player; surface electromyography; biofeedback; data correlation; electromyography; limb; surgery","Carmont M.R., Gravare Silbernagel K., Brorsson A., Olsson N., Maffulli N., Karlsson J., The Achilles tendon resting angle as an indirect measure of Achilles tendon length following rupture, repair, and rehabilitation, Asia Pacific Journal of Sports Medicine Arthroscopy Rehabilitation and Technology, 2, pp. 49-55, (2015); Cho K.H., Lee H.J., Lee W.H., Reliability of rehabilitative ultrasound imaging for the medial gastrocnemius muscle in poststroke patients, Clinical Physiology and Functional Imaging, 34, pp. 26-31, (2014); De la Fuente C., Carreno G., Soto M., Marambio H., Henriquez H., Clinical failure after Dresden repair of mid-substance Achilles tendon rupture: Human cadaveric testing, Knee Surgery, Sports Traumatology, Arthroscopy, 25, pp. 1849-1856, (2017); De la Fuente C., Carreno-Zillmann G., Marambio H., Henriquez H., Is the Dresden technique a mechanical design of choice suitable for the repair of middle third Achilles tendon ruptures? A biomechanical study, Revista Espanola Cirugia Ortopedica y Traumatologia, 60, pp. 279-285, (2016); De la Fuente C., Martinez-Valdes E., da Rocha E.S., Geremia J.M., Vaz M.A., Carpes F.P., Distal overactivation of gastrocnemius medialis in persistent plantarflexion weakness following Achilles tendon repair, Journal of Biomechanics, 148, (2023); De la Fuente C., Pena y Lillo R., Carreno G., Marambio H., Prospective randomized clinical trial of aggressive rehabilitation after acute Achilles tendon ruptures repaired with Dresden technique, Foot, 26, pp. 15-22, (2016); De la Fuente C.D., Cruz-Montecinos C., Schimidt H.L., Henriquez H., Ruidiaz S., Carpes F.P., Biomechanical properties of different techniques used in vitro for suturing mid-substance Achilles tendon ruptures, Clinical Biomechanics (Bristol, Avon), 50, pp. 78-83, (2017); De Luca C.J., Adam A., Wotiz R., Gilmore L.D., Nawab S.H., Decomposition of surface EMG signals, Journal of Neurophysiology, 96, pp. 1646-1657, (2006); De-la-Cruz-Torres B., Barrera-Garcia-Martin I., De la Cueva-Reguera M., Bravo-Aguilar M., Blanco-Morales M., Navarro-Flores E., Romero-Morales C., Abuin-Porras V., Does function determine the structure? Changes in flexor hallucis longus muscle and the associated performance related to dance modality: A cross-sectional study, Medicina (Kaunas, Lithuania), 56, (2020); Enoka R.M., Duchateau J., Rate coding and the control of muscle force, Cold Spring Harbor Perspectives in Medicine, 7, (2017); Flament D., Ebner T., The cerebellum as comparator: Increases in cerebellar activity during motor learning may reflect its role as part of an error detection/correction mechanism, Behavioral and Brain Sciences, 19, pp. 447-448, (1996); Freedman B.R., Salka N.S., Morris T.R., Bhatt P.R., Pardes A.M., Gordon J.A., Nuss C.A., Riggin C.N., Fryhofer G.W., Farber D.C., Soslowsky L., Temporal healing of Achilles tendons after injury in rodents depends on surgical treatment and activity, The Journal of the American Academy of Orthopaedic Surgeons, 25, pp. 635-647, (2017); Heckman C.J., Johnson M., Mottram C., Schuster J., Persistent inward currents in spinal motoneurons and their influence on human motoneuron firing patterns, The Neuroscientist, 14, pp. 264-275, (2008); Hennig M.H., Theoretical models of synaptic short term plasticity, Frontiers in Computational Neuroscience, 7, (2013); Hermens H.J., Freriks B., Disselhorst-Klug C., Rau G., Development of recommendations for SEMG sensors and sensor placement procedures, Journal of Electromyography and Kinesiology, 10, pp. 361-374, (2000); Jeon S., Miller W.M., Ye X., A comparison of motor unit control strategies between two different isometric tasks, International Journal of Environmental Research and Public Health, 17, (2020); LeFever R.S., De Luca C.J., A procedure for decomposing the myoelectric signal into its constituent action potentials - part I: Technique, theory, and implementation, IEEE Transactions on Biomedical Engineering, 29, pp. 149-157, (1982); Mickle K.J., Nester C.J., Crofts G., Steele J.R., Reliability of ultrasound to measure morphology of the toe flexor muscles, Journal Foot and Ankle Research, 6, (2013); Perez M.A., Lungholt B.K.S., Nielsen J.B., Presynaptic control of group Ia afferents in relation to acquisition of a visuo-motor skill in healthy humans, The Journal of Physiology, 568, pp. 343-354, (2005); Proske U., Gandevia S.C., The proprioceptive senses: Their roles in signaling body shape, body position and movement, and muscle force, Physiological Reviews, 92, pp. 1651-1697, (2012); Richardson M.S., Cramer J.T., Bemben D.A., Shehab R.L., Glover J., Bemben M.G., Effects of age and ACL reconstruction on quadriceps gamma loop function, Journal of Geriatric Physical Therapy (2001), 29, pp. 28-34, (2006); Saxena A., Giai Via A., Gravare Silbernagel K., Walther M., Anderson R., Gerdesmeyer L., Maffulli N., Current consensus for rehabilitation protocols of the surgically repaired acute mid-substance Achilles rupture: A systematic review and recommendations from the “GAIT” study group, The Journal of Foot and Ankle Surgery, 61, pp. 855-861, (2022); Semmler J.G., Motor unit synchronization and neuromuscular performance, Exercise and Sport Sciences Reviews, 30, pp. 8-14, (2002); Stein R.B., Brucker B.S., Ayyar D.R., Motor units in incomplete spinal cord injury: Electrical activity, contractile properties and the effects of biofeedback, Journal of Neurology, Neurosurgery, and Psychiatry, 53, pp. 880-885, (1990); Unell A., Eisenstat Z.M., Braun A., Gandhi A., Gilad-Gutnick S., Ben-Ami S., Sinha P., Influence of visual feedback persistence on visuo-motor skill improvement, Scientific Reports, 11, (2021)","F.P. Carpes; Applied Neuromechanics Research Group, Universidade Federal do Pampa, Uruguaiana, RS, Brazil; email: carpes@unipampa.edu.br","","American Physiological Society","2051817X","","","38195250","English","Physiol. Rep.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85181922153" "Sheikhi B.; Letafatkar A.; Thomas A.C.","Sheikhi, Bahram (57220054960); Letafatkar, Amir (54407242300); Thomas, Abbey C. (57001033200)","57220054960; 54407242300; 57001033200","Comparing myofascial meridian activation during single leg vertical drop jump in patients with anterior cruciate ligament reconstruction and healthy participants","2021","Gait and Posture","88","","","66","71","5","0","10.1016/j.gaitpost.2021.05.006","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105777344&doi=10.1016%2fj.gaitpost.2021.05.006&partnerID=40&md5=e21581c3dabe42770fb4f48132c6274a","Faculty of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran; Sport Injury and Corrective Exercises, Kharazmi University, Tehran, Iran; Department of Kinesiology, University of North Carolina at Charlotte Charlotte, NC, United States","Sheikhi B., Faculty of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran; Letafatkar A., Sport Injury and Corrective Exercises, Kharazmi University, Tehran, Iran; Thomas A.C., Department of Kinesiology, University of North Carolina at Charlotte Charlotte, NC, United States","Background: Muscles work synergistically to support the body during landing. Myofascial meridians have been described to classify muscles into functional synergies. The role that these functional lines plays in positioning the trunk and lower extremity of patients with anterior cruciate ligament reconstruction (ACLR) and healthy athletes during drop landing tasks remains unclear. Research question: The purpose of this study was to compare the front and back functional lines (FFL and BFL) muscle activation in patients with ACLR and healthy participants during single leg vertical drop jump (SLVDJ). Methods: Thirty-two male athletes (post-ACLR = 16, healthy = 16) participated (age = 23.3 ± 2.3 years). Superficial electromyography of FFL (adductor longus [AL], rectus abdominis [RA], pectoralis major) and BFL (vastus lateralis [VL], gluteus maximus [GMax], latissimus dorsi [LD]) was collected during the SLVDJ and compared at initial contact and maximum knee flexion between groups using t-tests and limbs using paired-samples t-tests. Results: In the FFL, the AL (p < 0.05) and RA (p < 0.05) muscles were more active in the healthy group compared to the ACLR group at initial contact and maximum knee flexion. PM demonstrated greater activation in the healthy group only at maximum knee flexion (p < 0.05). In the BFL, the VL (p < 0.05) and GMax (p < 0.05) muscles were more active in the ACLR group, whereas the LD (p < 0.05) muscles demonstrated greater activation in the healthy group at initial contact and maximum knee flexion. There were no healthy group inter-limb differences in FFL and BFL activation. ACLR participants demonstrated greater non-injured limb VL, AL, GMax and LD activation (p < 0.05) and greater injured limb PM and RA activation (p < 0.05). Significance: Based on the present data, patients after ACLR may present with an alteration in BFL and FFL muscles activation during a drop jump task. Functional line muscles during dynamic activities may change lower extremity positioning and lead to increase ACL injury risk. © 2021 Elsevier B.V.","ACL; Electromyography; Functional lines; Landing","Adult; Anterior Cruciate Ligament Injuries; Anterior Cruciate Ligament Reconstruction; Biomechanical Phenomena; Buttocks; Healthy Volunteers; Humans; Knee Joint; Leg; Male; Meridians; Young Adult; adductor longus; adult; age; analytical parameters; anterior cruciate ligament reconstruction; Article; athlete; back functional line; basketball player; body height; body mass; body meridian; body position; clinical article; comparative study; controlled study; electromyography; front functional line; gluteus maximus muscle; human; knee function; latissimus dorsi muscle; male; movement (physiology); myofascial meridian; pectoralis major muscle; plyometrics; priority journal; rectus abdominis muscle; risk factor; single leg vertical drop jump; soccer player; stretching; superficial electromyography; thigh muscle; vastus lateralis muscle; warm up; young adult; anterior cruciate ligament injury; biomechanics; buttock; knee; leg; normal human","Koga H., Nakamae A., Shima Y., Iwasa J., Myklebust G., Engebretsen L., Et al., Mechanisms for noncontact anterior cruciate ligament injuries: knee joint kinematics in 10 injury situations from female team handball and basketball, Am. 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Ther., 49, 8, pp. 601-610, (2019); Haddas R., Hooper T., James C.R., Sizer P.S., Volitional spine stabilization during a drop vertical jump from different landing heights: implications for anterior cruciate ligament injury, J. Athl. Train., 51, 12, pp. 1003-1012, (2016); Lessi G.C., Serrao F.V., Effects of fatigue on lower limb, pelvis and trunk kinematics and lower limb muscle activity during single-leg landing after anterior cruciate ligament reconstruction, Knee Surg. Sports Traumatol. Arthrosc., 25, 8, pp. 2550-2558, (2017); Cannon J., Cambridge E.D.J., McGill S.M., Increased core stability is associated with reduced knee valgus during single-leg landing tasks: investigating lumbar spine and hip joint rotational stiffness, J. Biomech., 116, (2021); Dingenen B., Janssens L., Claes S., Bellemans J., Staes F.F., Lower extremity muscle activation onset times during the transition from double-leg stance to single-leg stance in anterior cruciate ligament reconstructed subjects, Clin Biomech, 35, pp. 116-123, (2016); Shirey M., Hurlbutt M., Johansen N., King G.W., Wilkinson S.G., Hoover D.L., The influence of core musculature engagement on hip and knee kinematics in women during a single leg squat, Int. J. Sports Phys. Ther., 7, 1, (2012); Rosario J.L., Understanding muscular chains – a review for clinical application of chain stretching exercises aimed to correct posture, EC Orthopaedics, 5, 6, pp. 209-234, (2017); Dischiavi S.L., Wright A.A., Hegedus E.J., Bleakley C.M., Biotensegrity and myofascial chains: a global approach to an integrated kinetic chain, Med. Hypotheses, 110, pp. 90-96, (2018); Wilke J., Krause F., Vogt L., Banzer W., What is evidence-based about myofascial chains: a systematic review, Arch. 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Sport, 13, 3, pp. 134-140, (2012); Lomax M., Tasker L., Bostanci O., Inspiratory muscle fatigue affects latissimus dorsi but not pectoralis major activity during arms only front crawl sprinting, J. Strength Cond. Res., 28, 8, pp. 2262-2269, (2014); Contreras B., Vigotsky A.D., Schoenfeld B.J., Beardsley C., Cronin J., A comparison of gluteus maximus, biceps femoris, and vastus lateralis electromyographic activity in the back squat and barbell hip thrust exercises, J. Appl. Biomech., 31, 6, pp. 452-458, (2015); Du W., Li H., Omisore O.M., Wang L., Chen W., Sun X., Co-contraction characteristics of lumbar muscles in patients with lumbar disc herniation during different types of movement, Biomed. Eng. Online, 17, 1, (2018); Stensrud S., Myklebust G., Kristianslund E., Bahr R., Krosshaug T., Correlation between two-dimensional video analysis and subjective assessment in evaluating knee control among elite female team handball players, Br. J. Sports Med., 45, 7, pp. 589-595, (2011); Okubo Y., Kaneoka K., Shiina I., Tatsumura M., Miyakawa S., Abdominal muscle activity during a standing long jump, J. Orthop. Sports Phys. Ther., 43, 8, pp. 577-582, (2013); Zazulak B.T., Ponce P.L., Straub S.J., Medvecky M.J., Avedisian L., Hewett T.E., Gender comparison of hip muscle activity during single-leg landing, J. Orthop. Sports Phys. Ther., 35, 5, pp. 292-299, (2005); Huxel Bliven K.C., Anderson B.E., Core stability training for injury prevention, Sports Health, 5, 6, pp. 514-522, (2013); McLean S.G., Fellin R.E., Suedekum N., Calabrese G., Passerallo A., Joy S., Impact of fatigue on gender-based high-risk landing strategies, Med. Sci. Sports Exerc., 39, 3, pp. 502-514, (2007); Chappell J.D., Herman D.C., Knight B.S., Kirkendall D.T., Garrett W.E., Yu B., Effect of fatigue on knee kinetics and kinematics in stop-jump tasks, Am. J. Sports Med., 33, 7, pp. 1022-1029, (2005); Carvalhais V.O., Ocarino Jde M., Araujo V.L., Souza T.R., Silva P.L., Fonseca S.T., Myofascial force transmission between the latissimus dorsi and gluteus maximus muscles: an in vivo experiment, J. Biomech., 46, 5, pp. 1003-1007, (2013); Marinho H.V.R., Amaral G.M., Moreira B.S., Santos T.R.T., Magalhaes F.A., Souza T.R., Et al., Myofascial force transmission in the lower limb: an in vivo experiment, J. Biomech., 63, pp. 55-60, (2017); Krause F., Wilke J., Vogt L., Banzer W., Intermuscular force transmission along myofascial chains: a systematic review, J. Anat., 228, 6, pp. 910-918, (2016); Bryant A.L., Newton R.U., Steele J., Successful feed-forward strategies following ACL injury and reconstruction, J. Electromyogr. Kinesiol., 19, 5, pp. 988-997, (2009); Homan K.J., Norcross M.F., Goerger B.M., Prentice W.E., Blackburn J.T., The influence of hip strength on gluteal activity and lower extremity kinematics, J. Electromyogr. Kinesiol., 23, 2, pp. 411-415, (2013); Borghuis J., Hof A.L., Lemmink K.A., The importance of sensory-motor control in providing core stability: implications for measurement and training, Sports Med., 38, 11, pp. 893-916, (2008); Chuter V.H., Janse de Jonge X.A., Proximal and distal contributions to lower extremity injury: a review of the literature, Gait Posture, 36, 1, pp. 7-15, (2012)","A. Letafatkar; Sport Injury and Corrective Exercises, Kharazmi University, Tehran, Iran; email: letafatkaramir@yahoo.com","","Elsevier B.V.","09666362","","GAPOF","34004589","English","Gait Posture","Article","Final","","Scopus","2-s2.0-85105777344" "Lee I.; Ha S.; Lee S.Y.","Lee, Inje (57218142666); Ha, Sunghe (57220483473); Lee, Sae Yong (57217310681)","57218142666; 57220483473; 57217310681","Altered Running Biomechanics in Youth Soccer Players with a Lateral Ankle Sprain History","2022","Korean Journal of Sport Science","33","4","","535","542","7","0","10.24985/kjss.2022.33.4.535","https://www.scopus.com/inward/record.uri?eid=2-s2.0-85170364425&doi=10.24985%2fkjss.2022.33.4.535&partnerID=40&md5=b7239b1abb7b80f930fe0fcf09bc08b4","Kyungil University, South Korea; International Olympic Committee Research Centre KOREA, South Korea; Namseoul University, South Korea; Yonsei University, South Korea; Institute of Convergence Science, South Korea","Lee I., Kyungil University, South Korea, International Olympic Committee Research Centre KOREA, South Korea; Ha S., International Olympic Committee Research Centre KOREA, South Korea, Namseoul University, South Korea; Lee S.Y., International Olympic Committee Research Centre KOREA, South Korea, Yonsei University, South Korea, Institute of Convergence Science, South Korea","PURPOSE This study aimed to identify movement pattern differences in the running of youth soccer players with and without lateral ankle sprain (LAS) histories. METHODS A total of 12 participants were recruited and assigned to the LAS group or the control group. All participants were assessed for anthropometric data, and they filled in the subjective ankle function questionnaires. Then, reflective markers were attached to their bodies, and they were instructed to run at the preferred speed on the 9-m runway thrice. 3D joint angles for ankle, knee, and hip joints were exported, and their mean values and 95% confidence intervals were calculated. Ensemble curve analysis was conducted to compare running kinematics between the groups. RESULTS The LAS group exhibited fewer dorsiflexion angles and more inversion angles compared to the control group. Excluding the dorsiflexion deficits and more inverted ankles, there were no significant differences between the groups. CONCLUSIONS Although the ankle kinematic patterns found in this paper are not considered LAS risk factors, it will be able to identify precise LAS risk factors with prospective design (e.g., lower extremity movement patterns) as well as intrinsic risk factors. © Korea Institute of Sport Science.","Adolescent; Football; Gait; Injury prevention; Movement pattern","","Bahr R., Krosshaug T., Understanding injury mechanisms: A key component of preventing injuries in sport, British Journal of Sports Medicine, 39, 6, pp. 324-329, (2005); Chinn L., Dicharry J., Hertel J., Ankle kinematics of individuals with chronic ankle instability while walking and jogging on a treadmill in shoes, Physical Therapy in Sport, 14, 4, pp. 232-239, (2013); Dejong A. F., Koldenhoven R. M., Hertel J., Proximal adaptations in chronic ankle instability: Systematic review and meta-analysis, Medicine & Science in Sports & Exercise, 52, 7, pp. 1563-1575, (2020); Delahunt E., Monaghan K., Caulfield B., Altered neuromuscular control and ankle joint kinematics during walking in subjects with functional instability of the ankle joint, The American Journal of Sports Medicine, 34, 12, pp. 1970-1976, (2006); Drewes L. K., McKeon P. O., Kerrigan D. C., Hertel J., Dorsiflexion deficit during jogging with chronic ankle instability, Journal of Science and Medicine in Sport, 12, 6, pp. 685-687, (2009); Drewes L. K., McKeon P. O., Paolini G., Riley P., Kerrigan D., Ingersoll C. D., Hertel J., Altered ankle kinematics and shank-rear-foot coupling in those with chronic ankle instability, Journal of Sport Rehabilitation, 18, 3, pp. 375-388, (2009); Finch C., A new framework for research leading to sports injury prevention, Journal of Science and Medicine in Sport, 9, 1-2, pp. 3-9, (2006); Gribble P. 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Sci.","Article","Final","All Open Access; Gold Open Access","Scopus","2-s2.0-85170364425" "Wick J.Y.","Wick, Jeannette Y. (7004861393)","7004861393","Sports injuries: Are women more at risk?","2014","Pharmacy Times","80","6","","","","","0","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902784643&partnerID=40&md5=1497b341187651b088e63322e8eac2d1","University of Connecticut School of Pharmacy, United States","Wick J.Y., University of Connecticut School of Pharmacy, United States","[No abstract available]","","analgesic agent; nonsteroid antiinflammatory agent; anterior cruciate ligament injury; basketball; biomechanics; bone mass; brace; compression therapy; concussion; diet; exercise; female athlete triad; gastrointestinal symptom; human; immobilization; knee pain; liniment; muscle training; note; orthotics; patella dislocation; patellofemoral joint; patellofemoral pain syndrome; physical activity; physiotherapy; Q angle; resistance training; rest; risk; sex difference; shoulder injury; soccer; sport; sport injury; stress fracture; tibia torsion; weight bearing","Landmark moments for women's sports. 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Encyclopedia of Sports Medline website; Knee pain, anterior/patellofemoral malalignment syndrome; Hewett T.E., Myer G.D., Ford K.R., Et al., Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study, Am J Sports Med., 33, pp. 492-501, (2005); Hewett T.E., Zazulak B.T., Myer G.D., Effects of the menstrual cycle on anterior cruciate ligament injury risk: A systematic review, Am J Sports Med., 35, pp. 659-668, (2007); Tilp M., Rindler M., Landing techniques in beach volleyball, J Sports Sci Med., 12, pp. 447-453, (2013); Melin A., Tornberg A.B., Skouby S., Et al., The LEAF questionnaire: A screening tool for the identification of female athletes at risk for the female athlete triad, Br J Sports Med., (2014); Bennell K., Matheson G., Meeuwisse W., Brukner P., Risk factors for stress fractures, Sports Med., 28, pp. 91-122, (1999)","","","Intellisphere LLC","00030627","","","","English","Pharm. Times","Note","Final","","Scopus","2-s2.0-84902784643" "Quan S.","Quan, Shimin (56516220200)","56516220200","The study on factors and technology characteristics influencing soccer free kick motion trajectory","2014","BioTechnology: An Indian Journal","10","4","","756","763","7","0","","https://www.scopus.com/inward/record.uri?eid=2-s2.0-84922779265&partnerID=40&md5=bb169de42650ac326b7ba6a7bdfd9db2","Public Physical Education Department, Zhengzhou Chenggong University of Finance and Economics, Zhengzhou, Henan, 451200, China","Quan S., Public Physical Education Department, Zhengzhou Chenggong University of Finance and Economics, Zhengzhou, Henan, 451200, China","Chinese soccer has been in low level all the time, so, in order to promote the development of football, this paper combines the rapidly-developing computer simulation technology in recent years with 3D simulation for the motion trajectory of Soccer place-kick in air to better reveal the laws of soccer motion in the air. First, analyze Soccer place-kick to obtain two ways of Soccer place-kick, and then combine the kinematics with the mechanics to study on the two kicking styles, and establish the differential equation model, afterwards, solve the differential equation models with MATLAB software, thus, the trace image of football in the three dimensional space can be worked out. This study provides theoretical basis for the soccer motion in air, aimed at making contributions to the progress of soccer teaching and training. © 2014 Trade Science Inc. - INDIA.","Biomechanics; Differential equationmodel; MATLAB; Soccer place-kick; Three dimension emulation","Biomechanics; Differential equations; MATLAB; Computer simulation technology; Differential equationmodel; Matlab- software; Motion trajectories; Soccer place-kick; Technology characteristics; Three dimensional space; Three dimensions; Sports","Zhen-Qiang D., Heyuan Vocational Technical College, Heyuan Guangdong. 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An Indian J.","Article","Final","","Scopus","2-s2.0-84922779265"